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86 Commits

Author SHA1 Message Date
f40dc199c2 Merge pull request #6 from system76/boot-uefi-only
Skip volumes that do not have an EFI volume
2020-01-27 15:47:07 -07:00
3f54e8f57a Skip volumes that do not have an EFI volume 2020-01-27 15:32:04 -07:00
55849a4a46 IntelFrameworkModulePkg/BdsDxe: Ensure forms have unique IDs 2020-01-24 19:13:51 -07:00
74f2015276 Expand HD paths when checking for invalid options 2020-01-24 19:13:51 -07:00
6dff36c9b2 Add PlatformBdsPreBoot to allow hooks immediately before booting an option 2020-01-24 18:50:48 -07:00
814c0fa862 Load firmware-smmstore driver 2020-01-24 18:50:48 -07:00
a05aa4aff0 Also ignore keysizes of 0 2020-01-24 18:50:48 -07:00
30c84e8277 Update numbering 2020-01-24 18:50:48 -07:00
2ba9869baa Prioritize Udf and ElTorito partition types over Mbr to fix ISO boots 2020-01-24 18:50:48 -07:00
826b9d30cf Add firmware version to front page 2020-01-24 18:50:48 -07:00
b0e7e3919f Add SPACE for recovery message 2020-01-24 18:50:48 -07:00
976842130a Revise key handling in boot phase
Add escape key handler as early as possible, and set timeout immediately
upon displaying splash.
2020-01-24 18:50:48 -07:00
52d5d1b2c5 Improve error output when boot option fails to load 2020-01-24 18:50:48 -07:00
7050fc3a26 Make it possible to delete SMMSTORE variable by appending it with size 0 2020-01-24 18:50:48 -07:00
0eca9e3c1a Replace Front Page with computer name 2020-01-24 18:43:52 -07:00
19304f2144 Edit strings 2020-01-24 18:43:52 -07:00
b062ed0c86 Make Change Boot Order the primary boot maintenance manager page 2020-01-24 18:32:19 -07:00
d9cf95c6a2 Remove cruft from boot options 2020-01-24 18:10:15 -07:00
75a5161506 Ignore DEBUG interrupt (happens on gaze14) 2020-01-24 18:10:09 -07:00
d193b18023 Increase size of buffer for DMI information 2020-01-24 18:10:04 -07:00
061df3962f Update serial port to use 2020-01-24 18:09:54 -07:00
f6e7c15556 Add Intel GOP driver 2020-01-24 18:09:45 -07:00
95fb70f34d Update logo 2020-01-24 18:09:37 -07:00
900debdeec Add System76 Setup menu 2020-01-24 18:09:31 -07:00
33006e4f4e Order NVMe devices first 2020-01-24 18:09:23 -07:00
b8fbf69c16 Frontpage: add entries for some more KBL Chromebooks
Add entries for ATLAS, BARD, EKKO, EVE, NAUTILUS, NOCTURNE,
RAMMUS, SONA, SYNDRA

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-12-01 10:43:24 -06:00
ba13872223 Frontpage: fix max size used for GetDeviceNameFromProduct()
Fixes some device name strings not being copied due to
exceeding max size (but not size of buffer passed in)

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
eb1e7a0284 MdeModulePkg/NvmExpressDxe: Simplify NvmExpress name
Signed-off-by: Jeremy Soller <jeremy@system76.com>
2019-11-25 00:27:53 -06:00
eba6c7c6ce BdsBoot: use better device descriptions
Query boot devices and obtain make/model info if
available. Prefix description with device type
for better identification.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
a5f556c37b GenericBdsLib: add BmBootDescription from UefiBootManagerLib
Copy BmBootDescription from MdeModulePkg/UefiBootManagerLib,
removing appending of serial # since it makes descriptions
unweildy.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
e9023ae655 IntelFrameworkModulePkg: rework Frontpage layout
- center device name; left-justify other info
- remove Language and Device Manager options
- rename 'Continue' to 'Default Boot'

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
cdd43b2533 IntelFrameworkModulePkg: rename/rework Boot Maintenance Manager
With Boot Manager now renamed, rename BMM as well.
Also clean up and simplify menu to eliminate unused/non-
functional items.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
d1a6917813 IntelFrameworkModulePkg: rename Boot Manager to Boot Menu
'Boot Menu' is much more intuitive for users

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-11-25 00:27:53 -06:00
81e096bda1 Boot Maintenance Mrg: add missing 'save changes' option 2019-11-25 00:27:53 -06:00
42f99de779 MdeModulePkg: fix UninstallMultipleProtocolInterfaces() calls
Unlike the InstallMultipleProtocolInterfaces() boot service, which takes
an (EFI_HANDLE*) as first parameter, the
UninstallMultipleProtocolInterfaces() boot service takes an EFI_HANDLE as
first parameter.

These are actual bugs. They must have remained hidden until now because
they are on error paths. Fix the UninstallMultipleProtocolInterfaces()
calls.

Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
2019-11-25 00:27:53 -06:00
a03327088a MdeModulePkg/UsbBusDxe: Return error when the device is not present
Until now, during the USB device enumeration when its PortState
USB_PORT_STAT_CONNECTION bit was not set, the stack was not informed
that the device is not present. Fix that by returning appropriate
error code.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
2019-11-25 00:27:53 -06:00
4ba839c5c8 MdeModulePkg/XhciPei: Fix Aligned Page Allocation
Add support for allocating aligned pages at an alignment higher
than 4K. The new function allocated memory taking into account
the padding required and then frees up unused pages before mapping
it.

Signed-off-by: Ashish Singhal <ashishsingha@nvidia.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
2019-11-25 00:27:53 -06:00
6bd9d60b41 MdeModulePkg/XhciDxe: Fix Aligned Page Allocation
While allocating pages aligned at an alignment higher than
4K, allocate memory taking into consideration the padding
required for that alignment. The calls to free pages takes
care of this already.

Signed-off-by: Ashish Singhal <ashishsingha@nvidia.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
2019-11-25 00:27:53 -06:00
964f80253a Revert "UsbMassBoot: treat all USB drives as removable"
This reverts commit de4592d59e16f91b1cf480478572533be6cc5f1b.
2019-11-25 00:27:53 -06:00
47794944e6 IntelFrameworkModulePkg/Universal/BdsDxe: Fix assertion
Fix an assertion that prevented the boot menu to show up when the coreboot
string is very long.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
2019-11-22 14:08:20 -06:00
8f008298cc Frontpage: add entry for AMD Chromebooks (grunt)
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-06-23 18:18:19 -05:00
783f22ecc3 Frontpage: add entries for NAMI variants and SORAKA
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-06-23 18:18:19 -05:00
81a93fb3a9 UefiCpuPkg/CpuCommonFeaturesLib: Aesni.c uses BIT0 and BIT1 reversedly
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1621

According to Intel SDM as below, the BIT0 should be treated as
lock bit, and BIT1 should be treated as disable(1)/enable(0) bit.

"11b: AES instructions are not available until next
RESET.
Otherwise, AES instructions are available.
If the configuration is not 01b, AES
instructions can be mis-configured if a privileged agent
unintentionally writes 11b"

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Chandana Kumar <chandana.c.kumar@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2019-06-23 18:18:19 -05:00
30dc65997f AddBGRT: match BGRT with boot logo postition
Don't hard-code the logo size, and use the Microsoft-recommended logo position.

Signed-off-by: James Ye <jye836@gmail.com>
2019-05-13 11:54:26 +10:00
93f8c4a6d5 BdsConsole: use recommended boot logo position
Microsoft user experience specifications recommend the boot logo is drawn 38.2%
from the top of the screen. This is also where operating systems like Fedora
expect the logo to be drawn.

Signed-off-by: James Ye <jye836@gmail.com>
2019-05-13 11:40:56 +10:00
51be9d0425 BdsConsole: fix up boot logo positioning
No reason to hardcode the image size into the
positon calculations. Keep shift to upper 2/3
of screen.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-21 20:21:18 -06:00
31a4e13c19 BmpSupportLib: fix BMP validation
BMP files by tools other than MS paint can have a
variable number of padding bytes, which results in
the DataSize being less than (ImageSize - HeaderSize).
Fix the check to be less stringent.

Test: use BMP created by/saved by Photoshop

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-21 20:19:21 -06:00
9d32ca34d2 MemoryTest: remove unused variable StrTotalMemory
fixes compiler warning->error

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-21 20:19:21 -06:00
0f9b597012 Logo: use slightly larger logo
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
19e12d66fe BdsPlatform: increase timeout to 2s
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
9332332724 MemoryTest: replace test result with boot menu prompt
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
239e19e391 BdsBoot: add boot menu text for eMMC/SD, NVMe devices
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
c8a3cdb675 CorebootModulePkg: remove unused/deprecated SATA driver
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
40147bbf14 CorebootPayloadPkg: switch to MdeModulePkg SATA driver
CorebootModulePkg version is buggy and unmaintained, switching
to MdeModulePkg version fixes channel count / drive detection
issue on some KBL Chromeboxes

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
cf2bde63a1 Revert "MdeModulePkg/SdMmcPciHcDxe: Execute card detect only for RemovableSlot"
This reverts commit 4cd9d7fc6f.

card detect causes hangs on many devices with a directly-attached SD card reader
2019-02-20 17:29:26 -06:00
f6f2ff4904 WIP: hook into emuvariable to sync data with coreboot smm store
changed: buffer size from 64k to 256k

Change-Id: I7f443b9f36612f79787e1b4b1075176a91107686
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
a26aad44d1 Frontpage: add device name for Lars, Cave, Fizz, others
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:26 -06:00
3596140a69 CorebootPayloadPkg: Add SafeIntLib and BmpSupportLib to DSC files
Commit 2460ec2a8f added the new libraries
to DuetPkg to fix building. Do the same for CorebootPayloadPkg.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Prince Agyeman <prince.agyeman@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Alex James <theracermaster@gmail.com>
2019-02-20 17:29:26 -06:00
9b7ce3b9a1 Frontpage: use SMBIOS data directly for non-Google devices
Since board names match the device, just print manufacturer
and device name without translation.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:25 -06:00
147c02d66e Disable Page Table Protection.
Effectively disables the PT protection created by: 2ac1730bf2, 147fd35c3e, and 41b4600c30.

This fixes macOS boot issues.
2019-02-20 17:29:25 -06:00
768fe7365f EmmcDevice: fix detection on some models
From stepan:
"This enables eMMC booting when starting edk2
from depthcharge. Previously the driver would
bail out with an error while setting the eMMC
frequency, because depthcharge has already set
up the controller."

Also fixed detection on google/lars w/Core-i5
with upstream coreboot + Tianocore payload
2019-02-20 17:29:25 -06:00
0f6978e314 CbSupportPei: prevent lower coreboot table from being overwritten
Exclude the bottom 4kb from being included in System Memory HoB

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-20 17:29:25 -06:00
0a8abc3c4d FSDrivers: update drivers from rEFInd 0.11.2 2019-02-20 17:29:25 -06:00
54b26ae48f CorebootPayloadPkg: add NVMe support 2019-02-14 15:44:32 -06:00
9d72e4b922 MdeModulePkg/GraphicsConsole: don't draw cursor at 0,0
Prevents cursor from flashing on screen when
changing modes or clearing the screen.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-14 15:44:32 -06:00
7f094cdf45 Frontpage: gut unnecessary mode changes
minimize flicker between splash screen and BGRT
2019-02-14 15:44:32 -06:00
b0f8ea3c9c BdsPlatform: cleanup and use coreboot logo
- remove 'start boot option' text
- use boot logo splash for 1s, align to BGRT
- rework frontpage usage
2019-02-14 15:44:20 -06:00
731869826b MemoryTest: Remove upper left display, status bar
Since the memory test is essentially instantanous,
remove unnecessry duplication of memory count and
static status bar for cleaner display with coreboot logo
2019-02-14 15:41:27 -06:00
a49a99ef5e Use coreboot logo for CorebootPayloadPkg 2019-02-14 15:41:27 -06:00
d06545cd3d IntelFrameworkModulePkg: add BGRT table
Add support for adding a BGRT table for Windows 8/8.1/10 bootlogo.
2019-02-14 15:41:27 -06:00
575764deeb UsbMassBoot: treat all USB drives as removable 2019-02-14 15:41:27 -06:00
ed1cf61e3e Frontpage: Use a larger SimpleText console mode 2019-02-14 15:41:27 -06:00
091f5d689f CorebootPayloadPkg: Add DataHubDxe for OS X 2019-02-14 15:41:27 -06:00
d944c24078 Frontpage: remove leading spaces from CPU string 2019-02-14 15:41:27 -06:00
bdd22050f6 Frontpage: get SMBIOS Data from table directly
rather than getting it from the EFI SMBIOS protocol
2019-02-14 15:41:27 -06:00
0286bfae44 Frontpage: add device names, FW info to setup screen
Signed-off-by: Matt Devo <matt.devillier@gmail.com>
2019-02-14 15:41:27 -06:00
735fae0452 CorebootPayloadPkg: Use additional FS Drivers 2019-02-14 15:41:27 -06:00
8de2a8523d Add NTFS/ext4 filesystem drivers 2019-02-14 15:41:27 -06:00
e4fc0fbacb CorebootPayloadPkg: Remove OHCI and UHCI drivers 2019-02-14 15:41:26 -06:00
fceee0d621 CorebootPayloadPkg: Add PS/2 keyboard drivers. 2019-02-14 15:41:26 -06:00
d67d692ee2 CorebootModulePkg: Don't mask off legacy 8259 sources.
With the legacy sources masked, closing laptop lid results
in hard shutdown vs graceful transition to S3/suspend
(per coolstar)
2019-02-14 15:41:26 -06:00
927fc0e4b5 CorebootBdsLib: Call End of DXE event to allow booting 3rd party efi binaries. 2019-02-14 15:41:26 -06:00
04515ff368 CorebootPayloadPkg: Use BDS stage from DUET 2019-02-14 15:41:26 -06:00
439e7d2556 Frontpage: Set/Use native display resolution
set the mSetupH/V resolution based on GraphicsOutput mode,
not SimpleTextOut mode
2019-02-14 15:41:26 -06:00
0554ac9dd0 MdeModulePkg/GraphicsConsole: Don't re-set video output mode
Fixes display resolution issues with booting OS X
2019-02-14 15:41:26 -06:00
0a679652e8 PCI: copy/use Duet's PciNoEnumeration
Tianocore's PCI enumeration goes into an infinite loop, and
isn't necessary since coreboot has already handled it.
Copy and use DuetPkg's PciNoEnumeration package (which has
since been removed).

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
2019-02-14 15:34:48 -06:00
14969 changed files with 2631903 additions and 218542 deletions

3
.gitmodules vendored
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@ -1,6 +1,3 @@
[submodule "CryptoPkg/Library/OpensslLib/openssl"]
path = CryptoPkg/Library/OpensslLib/openssl
url = https://github.com/openssl/openssl
[submodule "SoftFloat"]
path = ArmPkg/Library/ArmSoftFloatLib/berkeley-softfloat-3
url = https://github.com/ucb-bar/berkeley-softfloat-3.git

36
AppPkg/AppPkg.dec Normal file
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@ -0,0 +1,36 @@
## @file
# Declarations for the UDK Standard Libraries.
#
# Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials are licensed and made available under
# the terms and conditions of the BSD License which accompanies this distribution.
# The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
##
[Defines]
DEC_SPECIFICATION = 0x00010005
PACKAGE_NAME = AppPkg
PACKAGE_GUID = B3E3D3D5-D62B-4497-A175-264F489D127E
PACKAGE_VERSION = 0.01
[Guids]
gAppPkgTokenSpaceGuid = { 0xe7e1efa6, 0x7607, 0x4a78, { 0xa7, 0xdd, 0x43, 0xe4, 0xbd, 0x72, 0xc0, 0x99 }}
[PcdsFixedAtBuild]
gAppPkgTokenSpaceGuid.DataSource_Port|1234|UINT16|0
gAppPkgTokenSpaceGuid.Tftp_AckLogBase|4|UINT32|1
gAppPkgTokenSpaceGuid.Tftp_AckMultiplier|4|UINT32|2
gAppPkgTokenSpaceGuid.Tftp_Bandwidth|0|BOOLEAN|3
gAppPkgTokenSpaceGuid.Tftp_HighSpeed|0|BOOLEAN|4
gAppPkgTokenSpaceGuid.Tftp_MaxRetry|10|UINT32|5
gAppPkgTokenSpaceGuid.Tftp_MaxTimeoutInSec|3|UINT32|6
gAppPkgTokenSpaceGuid.WebServer_HttpPort|80|UINT16|7

150
AppPkg/AppPkg.dsc Normal file
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@ -0,0 +1,150 @@
## @file
# Intel(r) UEFI Application Development Kit for EDK II.
# This package contains applications which depend upon Standard Libraries
# from the StdLib package.
#
# See the comments in the [LibraryClasses.IA32] and [BuildOptions] sections
# for important information about configuring this package for your
# environment.
#
# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
##
[Defines]
PLATFORM_NAME = AppPkg
PLATFORM_GUID = 0458dade-8b6e-4e45-b773-1b27cbda3e06
PLATFORM_VERSION = 0.01
DSC_SPECIFICATION = 0x00010006
OUTPUT_DIRECTORY = Build/AppPkg
SUPPORTED_ARCHITECTURES = IA32|X64|ARM|AARCH64
BUILD_TARGETS = DEBUG|RELEASE|NOOPT
SKUID_IDENTIFIER = DEFAULT
#
# Debug output control
#
DEFINE DEBUG_ENABLE_OUTPUT = FALSE # Set to TRUE to enable debug output
DEFINE DEBUG_PRINT_ERROR_LEVEL = 0x80000040 # Flags to control amount of debug output
DEFINE DEBUG_PROPERTY_MASK = 0
[PcdsFeatureFlag]
[PcdsFixedAtBuild]
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|$(DEBUG_PROPERTY_MASK)
gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|$(DEBUG_PRINT_ERROR_LEVEL)
[LibraryClasses]
#
# Entry Point Libraries
#
UefiApplicationEntryPoint|MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf
ShellCEntryLib|ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.inf
UefiDriverEntryPoint|MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf
#
# Common Libraries
#
BaseLib|MdePkg/Library/BaseLib/BaseLib.inf
BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
UefiLib|MdePkg/Library/UefiLib/UefiLib.inf
PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
UefiBootServicesTableLib|MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf
UefiRuntimeServicesTableLib|MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
!if $(DEBUG_ENABLE_OUTPUT)
DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
!else ## DEBUG_ENABLE_OUTPUT
DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
!endif ## DEBUG_ENABLE_OUTPUT
DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
PciLib|MdePkg/Library/BasePciLibCf8/BasePciLibCf8.inf
PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
SynchronizationLib|MdePkg/Library/BaseSynchronizationLib/BaseSynchronizationLib.inf
UefiRuntimeLib|MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
HiiLib|MdeModulePkg/Library/UefiHiiLib/UefiHiiLib.inf
UefiHiiServicesLib|MdeModulePkg/Library/UefiHiiServicesLib/UefiHiiServicesLib.inf
PerformanceLib|MdeModulePkg/Library/DxePerformanceLib/DxePerformanceLib.inf
HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf
FileHandleLib|MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf
SortLib|MdeModulePkg/Library/UefiSortLib/UefiSortLib.inf
ShellLib|ShellPkg/Library/UefiShellLib/UefiShellLib.inf
CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
###################################################################################################
#
# Components Section - list of the modules and components that will be processed by compilation
# tools and the EDK II tools to generate PE32/PE32+/Coff image files.
#
# Note: The EDK II DSC file is not used to specify how compiled binary images get placed
# into firmware volume images. This section is just a list of modules to compile from
# source into UEFI-compliant binaries.
# It is the FDF file that contains information on combining binary files into firmware
# volume images, whose concept is beyond UEFI and is described in PI specification.
# Binary modules do not need to be listed in this section, as they should be
# specified in the FDF file. For example: Shell binary (Shell_Full.efi), FAT binary (Fat.efi),
# Logo (Logo.bmp), and etc.
# There may also be modules listed in this section that are not required in the FDF file,
# When a module listed here is excluded from FDF file, then UEFI-compliant binary will be
# generated for it, but the binary will not be put into any firmware volume.
#
###################################################################################################
[Components]
#### Sample Applications.
AppPkg/Applications/Hello/Hello.inf # No LibC includes or functions.
AppPkg/Applications/Main/Main.inf # Simple invocation. No other LibC functions.
AppPkg/Applications/Enquire/Enquire.inf #
AppPkg/Applications/ArithChk/ArithChk.inf #
#### A simple fuzzer for OrderedCollectionLib, in particular for
#### BaseOrderedCollectionRedBlackTreeLib.
AppPkg/Applications/OrderedCollectionTest/OrderedCollectionTest.inf {
<LibraryClasses>
OrderedCollectionLib|MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.inf
DebugLib|MdePkg/Library/UefiDebugLibConOut/UefiDebugLibConOut.inf
DebugPrintErrorLevelLib|MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
<PcdsFeatureFlag>
gEfiMdePkgTokenSpaceGuid.PcdValidateOrderedCollection|TRUE
<PcdsFixedAtBuild>
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask|0x2F
gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0x80400040
}
#### Un-comment the following line to build Python 2.7.2.
# AppPkg/Applications/Python/PythonCore.inf
#### Un-comment the following line to build Python 2.7.10.
# AppPkg/Applications/Python/Python-2.7.10/Python2710.inf
#### Un-comment the following line to build Lua.
# AppPkg/Applications/Lua/Lua.inf
##############################################################################
#
# Specify whether we are running in an emulation environment, or not.
# Define EMULATE if we are, else keep the DEFINE commented out.
#
# DEFINE EMULATE = 1
##############################################################################
#
# Include Boilerplate text required for building with the Standard Libraries.
#
##############################################################################
!include StdLib/StdLib.inc
!include AppPkg/Applications/Sockets/Sockets.inc

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@ -0,0 +1,41 @@
## @file
# Program to generate an arith.h for use with the gdtoa binary to decimal and decimal to binary
# conversion library.
#
# Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = ArithChk
FILE_GUID = B6C0DCB6-434E-4BEC-BDAC-8EE7ED8A4EC8
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
arithchk.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
[LibraryClasses]
UefiLib
LibC
LibStdio
LibGdtoa
[BuildOptions]
GCC:*_*_*_CC_FLAGS = -Wno-format-security

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@ -0,0 +1,197 @@
/** @file
Program to generate an arith.h for use with the gdtoa binary to decimal and decimal to binary
conversion library.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Copyright (C) 1997, 1998 Lucent Technologies
All Rights Reserved
Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
NetBSD: arithchk.c,v 1.2 2006/01/25 15:27:42 kleink Exp
****************************************************************/
#include <sys/EfiCdefs.h>
/* Try to deduce arith.h from arithmetic properties. */
#include <stdio.h>
static int dalign;
typedef struct Akind {
char *name;
int kind;
} Akind;
static Akind IEEE_LITTLE_ENDIAN = { "IEEE_LITTLE_ENDIAN", 1 };
static Akind IEEE_BIG_ENDIAN = { "IEEE_BIG_ENDIAN", 2 };
static Akind IBM = { "IBM", 3 };
static Akind VAX = { "VAX", 4 };
static Akind CRAY = { "CRAY", 5};
static Akind *
Lcheck()
{
union {
double d;
long L[2];
} u;
struct {
double d;
long L;
} x[2];
if (sizeof(x) > 2*(sizeof(double) + sizeof(long)))
dalign = 1;
u.L[0] = u.L[1] = 0;
u.d = 1e13;
if (u.L[0] == 1117925532 && u.L[1] == -448790528)
return &IEEE_BIG_ENDIAN;
if (u.L[1] == 1117925532 && u.L[0] == -448790528)
return &IEEE_LITTLE_ENDIAN;
if (u.L[0] == -2065213935 && u.L[1] == 10752)
return &VAX;
if (u.L[0] == 1267827943 && u.L[1] == 704643072)
return &IBM;
return 0;
}
static Akind *
icheck()
{
union {
double d;
int L[2];
} u;
struct {
double d;
int L;
} x[2];
if (sizeof(x) > 2*(sizeof(double) + sizeof(int)))
dalign = 1;
u.L[0] = u.L[1] = 0;
u.d = 1e13;
if (u.L[0] == 1117925532 && u.L[1] == -448790528)
return &IEEE_BIG_ENDIAN;
if (u.L[1] == 1117925532 && u.L[0] == -448790528)
return &IEEE_LITTLE_ENDIAN;
if (u.L[0] == -2065213935 && u.L[1] == 10752)
return &VAX;
if (u.L[0] == 1267827943 && u.L[1] == 704643072)
return &IBM;
return 0;
}
char *emptyfmt = ""; /* avoid possible warning message with printf("") */
static Akind *
ccheck()
{
union {
double d;
long L;
} u;
long Cray1;
/* Cray1 = 4617762693716115456 -- without overflow on non-Crays */
Cray1 = printf(emptyfmt) < 0 ? 0 : 4617762;
if (printf(emptyfmt, Cray1) >= 0)
Cray1 = 1000000*Cray1 + 693716;
if (printf(emptyfmt, Cray1) >= 0)
Cray1 = 1000000*Cray1 + 115456;
u.d = 1e13;
if (u.L == Cray1)
return &CRAY;
return 0;
}
static int
fzcheck()
{
double a, b;
int i;
a = 1.;
b = .1;
for(i = 155;; b *= b, i >>= 1) {
if (i & 1) {
a *= b;
if (i == 1)
break;
}
}
b = a * a;
return b == 0.;
}
int
main()
{
Akind *a = 0;
int Ldef = 0;
FILE *f;
#ifdef WRITE_ARITH_H /* for Symantec's buggy "make" */
f = fopen("arith.h", "w");
if (!f) {
printf("Cannot open arith.h\n");
return 1;
}
#else
f = stdout;
#endif
if (sizeof(double) == 2*sizeof(long))
a = Lcheck();
else if (sizeof(double) == 2*sizeof(int)) {
Ldef = 1;
a = icheck();
}
else if (sizeof(double) == sizeof(long))
a = ccheck();
if (a) {
fprintf(f, "#define %s\n#define Arith_Kind_ASL %d\n",
a->name, a->kind);
if (Ldef)
fprintf(f, "#define Long int\n#define Intcast (int)(long)\n");
if (dalign)
fprintf(f, "#define Double_Align\n");
if (sizeof(char*) == 8)
fprintf(f, "#define X64_bit_pointers\n");
#ifndef NO_LONG_LONG
if (sizeof(long long) < 8)
#endif
fprintf(f, "#define NO_LONG_LONG\n");
if (a->kind <= 2 && fzcheck())
fprintf(f, "#define Sudden_Underflow\n");
return 0;
}
fprintf(f, "/* Unknown arithmetic */\n");
return 1;
}

File diff suppressed because it is too large Load Diff

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@ -0,0 +1,53 @@
## @file
# Enquire application for system integer and floating point characteristics
# enquiry.
#
# Due to the level of hardware introspection, this application MUST be built
# with optimizations disabled.
#
# COPYRIGHT(c) 1993-9 Steven Pemberton, CWI. All rights reserved.
# NOTE: Improvements gratefully received. Please mention the version.
# "http://www.cwi.nl/~steven/enquire.html"
#
# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = Enquire
FILE_GUID = 42f58b27-5dc3-4fa7-844d-5a7dbff06432
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
Enquire.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
[LibraryClasses]
UefiLib
LibC
LibString
LibStdio
LibGdtoa
LibWchar
[BuildOptions]
INTEL:*_*_*_CC_FLAGS = /Qdiag-disable:181,186
MSFT:*_*_*_CC_FLAGS = /Od
GCC:*_*_*_CC_FLAGS = -O0 -Wno-unused-variable

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@ -0,0 +1,37 @@
/** @file
A simple, basic, EDK II native, "hello" application to verify that
we can build applications without LibC.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/ShellCEntryLib.h>
/***
Print a welcoming message.
Establishes the main structure of the application.
@retval 0 The application exited normally.
@retval Other An error occurred.
***/
INTN
EFIAPI
ShellAppMain (
IN UINTN Argc,
IN CHAR16 **Argv
)
{
Print(L"Hello there fellow Programmer.\n");
Print(L"Welcome to the world of EDK II.\n");
return(0);
}

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@ -0,0 +1,36 @@
## @file
# A simple, basic, EDK II native, "hello" application.
#
# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = Hello
FILE_GUID = a912f198-7f0e-4803-b908-b757b806ec83
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
Hello.c
[Packages]
MdePkg/MdePkg.dec
ShellPkg/ShellPkg.dec
[LibraryClasses]
UefiLib
ShellCEntryLib

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@ -0,0 +1,69 @@
Lua is designed, implemented, and maintained by a team at PUC-Rio, the
Pontifical Catholic University of Rio de Janeiro in Brazil. Lua was born and
raised in Tecgraf, formerly the Computer Graphics Technology Group of PUC-Rio.
Lua is now housed at LabLua, a laboratory of the Department of Computer Science
of PUC-Rio.
The initial work to provide the UEFI implementation of Lua was done at
Emulex Corporation.
Some final packaging and build file "beautification" was done at
Intel Corporation.
Copyright notices, applying to this package and its contents, follow below.
These notices will be updated as necessitated by ongoing maintenance and
enhancement.
--------
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
--------
Copyright (c) 2014, Emulex Corporation 3333 Susan Street, Costa Mesa, CA 92626
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
--------
Copyright (C) 1994-2013 Lua.org, PUC-Rio.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------

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@ -0,0 +1,54 @@
## @file
# Lua.inf
#
# UEFI port of the Lua scripting language, Lua 5.2.3, released on 11 Nov 2013
#
# Copyright (c) 2014, Emulex Corporation 3333 Susan Street, Costa Mesa, CA 92626
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = Lua
FILE_GUID = d6a9a1b9-4bfd-d61e-f037-3fa4ca06e046
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
[Sources]
./src/lua.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
ShellPkg/ShellPkg.dec
[LibraryClasses]
LibC
LibStdio
LibStdLib
LibSignal
LibString
LibMath
LibTime
DevShell
UefiLib
ShellCEntryLib
LuaLib

View File

@ -0,0 +1,72 @@
## @file
# LuaLib.inf
#
# Copyright (c) 2014, Emulex Corporation 3333 Susan Street, Costa Mesa, CA 92626
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = LuaLib
FILE_GUID = 4e38555c-4f92-20c5-a563-fe907585662d
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
LIBRARY_CLASS = LuaLib
[Sources]
src/lapi.c
src/lauxlib.c
src/lbaselib.c
src/lbitlib.c
src/lcode.c
src/lcorolib.c
src/lctype.c
src/ldblib.c
src/ldebug.c
src/ldo.c
src/ldump.c
src/lfunc.c
src/lgc.c
src/linit.c
src/liolib.c
src/llex.c
src/lmathlib.c
src/lmem.c
src/loadlib.c
src/lobject.c
src/lopcodes.c
src/loslib.c
src/lparser.c
src/lstate.c
src/lstring.c
src/lstrlib.c
src/ltable.c
src/ltablib.c
src/ltm.c
src/lundump.c
src/lvm.c
src/lzio.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
[BuildOptions]
MSFT:*_*_*_CC_FLAGS = /Oi- /wd4702

View File

@ -0,0 +1,35 @@
This is Lua 5.2.3, released on 11 Nov 2013.
For installation instructions, license details, and
further information about Lua, see doc/readme.html.
=================================================
Embedding Lua
-------------
The Lua library instance, LuaLib, is defined by StdLib.inc. Since, currently, all applications which
embed Lua are also StdLib applications, StdLib.inc will be included by your package's .DSC file.
The header files required to use LuaLib are in the standard include path at StdLib\Include\Lua.
They may be referenced as:
#include <Lua/lua.h>
#include <Lua/lualib.h>
#include <Lua/lauxlib>
#include <Lua/luaconf.h>
Lua/luaconf.h is the Lua configuration file. If you wish to build Lua with custom characteristics,
this is the file to modify. Modify the file in StdLib\Include\Lua since the file in the Lua
source tree is just a stub which references the file in StdLib.
Installation on UEFI
--------------------
Install the Lua.efi file into \Efi\Tools. This is the standalone Lua interpreter.
Create a directory, \Efi\StdLib\lib\Lua. This is the default location for Lua scripts.
If desired, copy the files from AppPkg\Applications\Lua\scripts, in the source tree, into
\Efi\StdLib\lib\Lua.
Bugs and Other Issues
---------------------
EOF characters, ^D or ^Z, are not properly recognized by the console and can't be used to
terminate an application. Use os.exit() to exit Lua.

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@ -0,0 +1,533 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<TITLE>Lua 5.2 Reference Manual - contents</TITLE>
<LINK REL="stylesheet" TYPE="text/css" HREF="lua.css">
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1">
<STYLE TYPE="text/css">
ul {
list-style-type: none ;
list-style-position: outside ;
}
</STYLE>
</HEAD>
<BODY>
<HR>
<H1>
<A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="" BORDER=0></A>
Lua 5.2 Reference Manual
</H1>
<P>
The reference manual is the official definition of the Lua language.
For a complete introduction to Lua programming, see the book
<A HREF="http://www.lua.org/pil/">Programming in Lua</A>.
<P>
<A HREF="manual.html">start</A>
&middot;
<A HREF="#contents">contents</A>
&middot;
<A HREF="#index">index</A>
<HR>
<SMALL>
Copyright &copy; 2011&ndash;2013 Lua.org, PUC-Rio.
Freely available under the terms of the
<A HREF="http://www.lua.org/license.html">Lua license</A>.
</SMALL>
<H2><A NAME="contents">Contents</A></H2>
<UL style="padding: 0">
<LI><A HREF="manual.html">1 &ndash; Introduction</A>
<P>
<LI><A HREF="manual.html#2">2 &ndash; Basic Concepts</A>
<UL>
<LI><A HREF="manual.html#2.1">2.1 &ndash; Values and Types</A>
<LI><A HREF="manual.html#2.2">2.2 &ndash; Environments and the Global Environment</A>
<LI><A HREF="manual.html#2.3">2.3 &ndash; Error Handling</A>
<LI><A HREF="manual.html#2.4">2.4 &ndash; Metatables and Metamethods</A>
<LI><A HREF="manual.html#2.5">2.5 &ndash; Garbage Collection</A>
<UL>
<LI><A HREF="manual.html#2.5.1">2.5.1 &ndash; Garbage-Collection Metamethods</A>
<LI><A HREF="manual.html#2.5.2">2.5.2 &ndash; Weak Tables</A>
</UL>
<LI><A HREF="manual.html#2.6">2.6 &ndash; Coroutines</A>
</UL>
<P>
<LI><A HREF="manual.html#3">3 &ndash; The Language</A>
<UL>
<LI><A HREF="manual.html#3.1">3.1 &ndash; Lexical Conventions</A>
<LI><A HREF="manual.html#3.2">3.2 &ndash; Variables</A>
<LI><A HREF="manual.html#3.3">3.3 &ndash; Statements</A>
<UL>
<LI><A HREF="manual.html#3.3.1">3.3.1 &ndash; Blocks</A>
<LI><A HREF="manual.html#3.3.2">3.3.2 &ndash; Chunks</A>
<LI><A HREF="manual.html#3.3.3">3.3.3 &ndash; Assignment</A>
<LI><A HREF="manual.html#3.3.4">3.3.4 &ndash; Control Structures</A>
<LI><A HREF="manual.html#3.3.5">3.3.5 &ndash; For Statement</A>
<LI><A HREF="manual.html#3.3.6">3.3.6 &ndash; Function Calls as Statements</A>
<LI><A HREF="manual.html#3.3.7">3.3.7 &ndash; Local Declarations</A>
</UL>
<LI><A HREF="manual.html#3.4">3.4 &ndash; Expressions</A>
<UL>
<LI><A HREF="manual.html#3.4.1">3.4.1 &ndash; Arithmetic Operators</A>
<LI><A HREF="manual.html#3.4.2">3.4.2 &ndash; Coercion</A>
<LI><A HREF="manual.html#3.4.3">3.4.3 &ndash; Relational Operators</A>
<LI><A HREF="manual.html#3.4.4">3.4.4 &ndash; Logical Operators</A>
<LI><A HREF="manual.html#3.4.5">3.4.5 &ndash; Concatenation</A>
<LI><A HREF="manual.html#3.4.6">3.4.6 &ndash; The Length Operator</A>
<LI><A HREF="manual.html#3.4.7">3.4.7 &ndash; Precedence</A>
<LI><A HREF="manual.html#3.4.8">3.4.8 &ndash; Table Constructors</A>
<LI><A HREF="manual.html#3.4.9">3.4.9 &ndash; Function Calls</A>
<LI><A HREF="manual.html#3.4.10">3.4.10 &ndash; Function Definitions</A>
</UL>
<LI><A HREF="manual.html#3.5">3.5 &ndash; Visibility Rules</A>
</UL>
<P>
<LI><A HREF="manual.html#4">4 &ndash; The Application Program Interface</A>
<UL>
<LI><A HREF="manual.html#4.1">4.1 &ndash; The Stack</A>
<LI><A HREF="manual.html#4.2">4.2 &ndash; Stack Size</A>
<LI><A HREF="manual.html#4.3">4.3 &ndash; Valid and Acceptable Indices</A>
<LI><A HREF="manual.html#4.4">4.4 &ndash; C Closures</A>
<LI><A HREF="manual.html#4.5">4.5 &ndash; Registry</A>
<LI><A HREF="manual.html#4.6">4.6 &ndash; Error Handling in C</A>
<LI><A HREF="manual.html#4.7">4.7 &ndash; Handling Yields in C</A>
<LI><A HREF="manual.html#4.8">4.8 &ndash; Functions and Types</A>
<LI><A HREF="manual.html#4.9">4.9 &ndash; The Debug Interface</A>
</UL>
<P>
<LI><A HREF="manual.html#5">5 &ndash; The Auxiliary Library</A>
<UL>
<LI><A HREF="manual.html#5.1">5.1 &ndash; Functions and Types</A>
</UL>
<P>
<LI><A HREF="manual.html#6">6 &ndash; Standard Libraries</A>
<UL>
<LI><A HREF="manual.html#6.1">6.1 &ndash; Basic Functions</A>
<LI><A HREF="manual.html#6.2">6.2 &ndash; Coroutine Manipulation</A>
<LI><A HREF="manual.html#6.3">6.3 &ndash; Modules</A>
<LI><A HREF="manual.html#6.4">6.4 &ndash; String Manipulation</A>
<UL>
<LI><A HREF="manual.html#6.4.1">6.4.1 &ndash; Patterns</A>
</UL>
<LI><A HREF="manual.html#6.5">6.5 &ndash; Table Manipulation</A>
<LI><A HREF="manual.html#6.6">6.6 &ndash; Mathematical Functions</A>
<LI><A HREF="manual.html#6.7">6.7 &ndash; Bitwise Operations</A>
<LI><A HREF="manual.html#6.8">6.8 &ndash; Input and Output Facilities</A>
<LI><A HREF="manual.html#6.9">6.9 &ndash; Operating System Facilities</A>
<LI><A HREF="manual.html#6.10">6.10 &ndash; The Debug Library</A>
</UL>
<P>
<LI><A HREF="manual.html#7">7 &ndash; Lua Standalone</A>
<P>
<LI><A HREF="manual.html#8">8 &ndash; Incompatibilities with the Previous Version</A>
<UL>
<LI><A HREF="manual.html#8.1">8.1 &ndash; Changes in the Language</A>
<LI><A HREF="manual.html#8.2">8.2 &ndash; Changes in the Libraries</A>
<LI><A HREF="manual.html#8.3">8.3 &ndash; Changes in the API</A>
</UL>
<P>
<LI><A HREF="manual.html#9">9 &ndash; The Complete Syntax of Lua</A>
</UL>
<H2><A NAME="index">Index</A></H2>
<TABLE WIDTH="100%">
<TR VALIGN="top">
<TD>
<H3><A NAME="functions">Lua functions</A></H3>
<P>
<A HREF="manual.html#pdf-_G">_G</A><BR>
<A HREF="manual.html#pdf-_VERSION">_VERSION</A><BR>
<P>
<A HREF="manual.html#pdf-assert">assert</A><BR>
<A HREF="manual.html#pdf-collectgarbage">collectgarbage</A><BR>
<A HREF="manual.html#pdf-dofile">dofile</A><BR>
<A HREF="manual.html#pdf-error">error</A><BR>
<A HREF="manual.html#pdf-getmetatable">getmetatable</A><BR>
<A HREF="manual.html#pdf-ipairs">ipairs</A><BR>
<A HREF="manual.html#pdf-load">load</A><BR>
<A HREF="manual.html#pdf-loadfile">loadfile</A><BR>
<A HREF="manual.html#pdf-next">next</A><BR>
<A HREF="manual.html#pdf-pairs">pairs</A><BR>
<A HREF="manual.html#pdf-pcall">pcall</A><BR>
<A HREF="manual.html#pdf-print">print</A><BR>
<A HREF="manual.html#pdf-rawequal">rawequal</A><BR>
<A HREF="manual.html#pdf-rawget">rawget</A><BR>
<A HREF="manual.html#pdf-rawlen">rawlen</A><BR>
<A HREF="manual.html#pdf-rawset">rawset</A><BR>
<A HREF="manual.html#pdf-require">require</A><BR>
<A HREF="manual.html#pdf-select">select</A><BR>
<A HREF="manual.html#pdf-setmetatable">setmetatable</A><BR>
<A HREF="manual.html#pdf-tonumber">tonumber</A><BR>
<A HREF="manual.html#pdf-tostring">tostring</A><BR>
<A HREF="manual.html#pdf-type">type</A><BR>
<A HREF="manual.html#pdf-xpcall">xpcall</A><BR>
<P>
<A HREF="manual.html#pdf-bit32.arshift">bit32.arshift</A><BR>
<A HREF="manual.html#pdf-bit32.band">bit32.band</A><BR>
<A HREF="manual.html#pdf-bit32.bnot">bit32.bnot</A><BR>
<A HREF="manual.html#pdf-bit32.bor">bit32.bor</A><BR>
<A HREF="manual.html#pdf-bit32.btest">bit32.btest</A><BR>
<A HREF="manual.html#pdf-bit32.bxor">bit32.bxor</A><BR>
<A HREF="manual.html#pdf-bit32.extract">bit32.extract</A><BR>
<A HREF="manual.html#pdf-bit32.lrotate">bit32.lrotate</A><BR>
<A HREF="manual.html#pdf-bit32.lshift">bit32.lshift</A><BR>
<A HREF="manual.html#pdf-bit32.replace">bit32.replace</A><BR>
<A HREF="manual.html#pdf-bit32.rrotate">bit32.rrotate</A><BR>
<A HREF="manual.html#pdf-bit32.rshift">bit32.rshift</A><BR>
<P>
<A HREF="manual.html#pdf-coroutine.create">coroutine.create</A><BR>
<A HREF="manual.html#pdf-coroutine.resume">coroutine.resume</A><BR>
<A HREF="manual.html#pdf-coroutine.running">coroutine.running</A><BR>
<A HREF="manual.html#pdf-coroutine.status">coroutine.status</A><BR>
<A HREF="manual.html#pdf-coroutine.wrap">coroutine.wrap</A><BR>
<A HREF="manual.html#pdf-coroutine.yield">coroutine.yield</A><BR>
<P>
<A HREF="manual.html#pdf-debug.debug">debug.debug</A><BR>
<A HREF="manual.html#pdf-debug.getuservalue">debug.getuservalue</A><BR>
<A HREF="manual.html#pdf-debug.gethook">debug.gethook</A><BR>
<A HREF="manual.html#pdf-debug.getinfo">debug.getinfo</A><BR>
<A HREF="manual.html#pdf-debug.getlocal">debug.getlocal</A><BR>
<A HREF="manual.html#pdf-debug.getmetatable">debug.getmetatable</A><BR>
<A HREF="manual.html#pdf-debug.getregistry">debug.getregistry</A><BR>
<A HREF="manual.html#pdf-debug.getupvalue">debug.getupvalue</A><BR>
<A HREF="manual.html#pdf-debug.setuservalue">debug.setuservalue</A><BR>
<A HREF="manual.html#pdf-debug.sethook">debug.sethook</A><BR>
<A HREF="manual.html#pdf-debug.setlocal">debug.setlocal</A><BR>
<A HREF="manual.html#pdf-debug.setmetatable">debug.setmetatable</A><BR>
<A HREF="manual.html#pdf-debug.setupvalue">debug.setupvalue</A><BR>
<A HREF="manual.html#pdf-debug.traceback">debug.traceback</A><BR>
<A HREF="manual.html#pdf-debug.upvalueid">debug.upvalueid</A><BR>
<A HREF="manual.html#pdf-debug.upvaluejoin">debug.upvaluejoin</A><BR>
<P>
<A HREF="manual.html#pdf-file:close">file:close</A><BR>
<A HREF="manual.html#pdf-file:flush">file:flush</A><BR>
<A HREF="manual.html#pdf-file:lines">file:lines</A><BR>
<A HREF="manual.html#pdf-file:read">file:read</A><BR>
<A HREF="manual.html#pdf-file:seek">file:seek</A><BR>
<A HREF="manual.html#pdf-file:setvbuf">file:setvbuf</A><BR>
<A HREF="manual.html#pdf-file:write">file:write</A><BR>
<P>
<A HREF="manual.html#pdf-io.close">io.close</A><BR>
<A HREF="manual.html#pdf-io.flush">io.flush</A><BR>
<A HREF="manual.html#pdf-io.input">io.input</A><BR>
<A HREF="manual.html#pdf-io.lines">io.lines</A><BR>
<A HREF="manual.html#pdf-io.open">io.open</A><BR>
<A HREF="manual.html#pdf-io.output">io.output</A><BR>
<A HREF="manual.html#pdf-io.popen">io.popen</A><BR>
<A HREF="manual.html#pdf-io.read">io.read</A><BR>
<A HREF="manual.html#pdf-io.stderr">io.stderr</A><BR>
<A HREF="manual.html#pdf-io.stdin">io.stdin</A><BR>
<A HREF="manual.html#pdf-io.stdout">io.stdout</A><BR>
<A HREF="manual.html#pdf-io.tmpfile">io.tmpfile</A><BR>
<A HREF="manual.html#pdf-io.type">io.type</A><BR>
<A HREF="manual.html#pdf-io.write">io.write</A><BR>
</TD>
<TD>
<H3>&nbsp;</H3>
<P>
<A HREF="manual.html#pdf-math.abs">math.abs</A><BR>
<A HREF="manual.html#pdf-math.acos">math.acos</A><BR>
<A HREF="manual.html#pdf-math.asin">math.asin</A><BR>
<A HREF="manual.html#pdf-math.atan">math.atan</A><BR>
<A HREF="manual.html#pdf-math.atan2">math.atan2</A><BR>
<A HREF="manual.html#pdf-math.ceil">math.ceil</A><BR>
<A HREF="manual.html#pdf-math.cos">math.cos</A><BR>
<A HREF="manual.html#pdf-math.cosh">math.cosh</A><BR>
<A HREF="manual.html#pdf-math.deg">math.deg</A><BR>
<A HREF="manual.html#pdf-math.exp">math.exp</A><BR>
<A HREF="manual.html#pdf-math.floor">math.floor</A><BR>
<A HREF="manual.html#pdf-math.fmod">math.fmod</A><BR>
<A HREF="manual.html#pdf-math.frexp">math.frexp</A><BR>
<A HREF="manual.html#pdf-math.huge">math.huge</A><BR>
<A HREF="manual.html#pdf-math.ldexp">math.ldexp</A><BR>
<A HREF="manual.html#pdf-math.log">math.log</A><BR>
<A HREF="manual.html#pdf-math.max">math.max</A><BR>
<A HREF="manual.html#pdf-math.min">math.min</A><BR>
<A HREF="manual.html#pdf-math.modf">math.modf</A><BR>
<A HREF="manual.html#pdf-math.pi">math.pi</A><BR>
<A HREF="manual.html#pdf-math.pow">math.pow</A><BR>
<A HREF="manual.html#pdf-math.rad">math.rad</A><BR>
<A HREF="manual.html#pdf-math.random">math.random</A><BR>
<A HREF="manual.html#pdf-math.randomseed">math.randomseed</A><BR>
<A HREF="manual.html#pdf-math.sin">math.sin</A><BR>
<A HREF="manual.html#pdf-math.sinh">math.sinh</A><BR>
<A HREF="manual.html#pdf-math.sqrt">math.sqrt</A><BR>
<A HREF="manual.html#pdf-math.tan">math.tan</A><BR>
<A HREF="manual.html#pdf-math.tanh">math.tanh</A><BR>
<P>
<A HREF="manual.html#pdf-os.clock">os.clock</A><BR>
<A HREF="manual.html#pdf-os.date">os.date</A><BR>
<A HREF="manual.html#pdf-os.difftime">os.difftime</A><BR>
<A HREF="manual.html#pdf-os.execute">os.execute</A><BR>
<A HREF="manual.html#pdf-os.exit">os.exit</A><BR>
<A HREF="manual.html#pdf-os.getenv">os.getenv</A><BR>
<A HREF="manual.html#pdf-os.remove">os.remove</A><BR>
<A HREF="manual.html#pdf-os.rename">os.rename</A><BR>
<A HREF="manual.html#pdf-os.setlocale">os.setlocale</A><BR>
<A HREF="manual.html#pdf-os.time">os.time</A><BR>
<A HREF="manual.html#pdf-os.tmpname">os.tmpname</A><BR>
<P>
<A HREF="manual.html#pdf-package.config">package.config</A><BR>
<A HREF="manual.html#pdf-package.cpath">package.cpath</A><BR>
<A HREF="manual.html#pdf-package.loaded">package.loaded</A><BR>
<A HREF="manual.html#pdf-package.loadlib">package.loadlib</A><BR>
<A HREF="manual.html#pdf-package.path">package.path</A><BR>
<A HREF="manual.html#pdf-package.preload">package.preload</A><BR>
<A HREF="manual.html#pdf-package.searchers">package.searchers</A><BR>
<A HREF="manual.html#pdf-package.searchpath">package.searchpath</A><BR>
<P>
<A HREF="manual.html#pdf-string.byte">string.byte</A><BR>
<A HREF="manual.html#pdf-string.char">string.char</A><BR>
<A HREF="manual.html#pdf-string.dump">string.dump</A><BR>
<A HREF="manual.html#pdf-string.find">string.find</A><BR>
<A HREF="manual.html#pdf-string.format">string.format</A><BR>
<A HREF="manual.html#pdf-string.gmatch">string.gmatch</A><BR>
<A HREF="manual.html#pdf-string.gsub">string.gsub</A><BR>
<A HREF="manual.html#pdf-string.len">string.len</A><BR>
<A HREF="manual.html#pdf-string.lower">string.lower</A><BR>
<A HREF="manual.html#pdf-string.match">string.match</A><BR>
<A HREF="manual.html#pdf-string.rep">string.rep</A><BR>
<A HREF="manual.html#pdf-string.reverse">string.reverse</A><BR>
<A HREF="manual.html#pdf-string.sub">string.sub</A><BR>
<A HREF="manual.html#pdf-string.upper">string.upper</A><BR>
<P>
<A HREF="manual.html#pdf-table.concat">table.concat</A><BR>
<A HREF="manual.html#pdf-table.insert">table.insert</A><BR>
<A HREF="manual.html#pdf-table.pack">table.pack</A><BR>
<A HREF="manual.html#pdf-table.remove">table.remove</A><BR>
<A HREF="manual.html#pdf-table.sort">table.sort</A><BR>
<A HREF="manual.html#pdf-table.unpack">table.unpack</A><BR>
</TD>
<TD>
<H3>C API</H3>
<P>
<A HREF="manual.html#lua_Alloc">lua_Alloc</A><BR>
<A HREF="manual.html#lua_CFunction">lua_CFunction</A><BR>
<A HREF="manual.html#lua_Debug">lua_Debug</A><BR>
<A HREF="manual.html#lua_Hook">lua_Hook</A><BR>
<A HREF="manual.html#lua_Integer">lua_Integer</A><BR>
<A HREF="manual.html#lua_Number">lua_Number</A><BR>
<A HREF="manual.html#lua_Reader">lua_Reader</A><BR>
<A HREF="manual.html#lua_State">lua_State</A><BR>
<A HREF="manual.html#lua_Unsigned">lua_Unsigned</A><BR>
<A HREF="manual.html#lua_Writer">lua_Writer</A><BR>
<P>
<A HREF="manual.html#lua_absindex">lua_absindex</A><BR>
<A HREF="manual.html#lua_arith">lua_arith</A><BR>
<A HREF="manual.html#lua_atpanic">lua_atpanic</A><BR>
<A HREF="manual.html#lua_call">lua_call</A><BR>
<A HREF="manual.html#lua_callk">lua_callk</A><BR>
<A HREF="manual.html#lua_checkstack">lua_checkstack</A><BR>
<A HREF="manual.html#lua_close">lua_close</A><BR>
<A HREF="manual.html#lua_compare">lua_compare</A><BR>
<A HREF="manual.html#lua_concat">lua_concat</A><BR>
<A HREF="manual.html#lua_copy">lua_copy</A><BR>
<A HREF="manual.html#lua_createtable">lua_createtable</A><BR>
<A HREF="manual.html#lua_dump">lua_dump</A><BR>
<A HREF="manual.html#lua_error">lua_error</A><BR>
<A HREF="manual.html#lua_gc">lua_gc</A><BR>
<A HREF="manual.html#lua_getallocf">lua_getallocf</A><BR>
<A HREF="manual.html#lua_getctx">lua_getctx</A><BR>
<A HREF="manual.html#lua_getfield">lua_getfield</A><BR>
<A HREF="manual.html#lua_getglobal">lua_getglobal</A><BR>
<A HREF="manual.html#lua_gethook">lua_gethook</A><BR>
<A HREF="manual.html#lua_gethookcount">lua_gethookcount</A><BR>
<A HREF="manual.html#lua_gethookmask">lua_gethookmask</A><BR>
<A HREF="manual.html#lua_getinfo">lua_getinfo</A><BR>
<A HREF="manual.html#lua_getlocal">lua_getlocal</A><BR>
<A HREF="manual.html#lua_getmetatable">lua_getmetatable</A><BR>
<A HREF="manual.html#lua_getstack">lua_getstack</A><BR>
<A HREF="manual.html#lua_gettable">lua_gettable</A><BR>
<A HREF="manual.html#lua_gettop">lua_gettop</A><BR>
<A HREF="manual.html#lua_getupvalue">lua_getupvalue</A><BR>
<A HREF="manual.html#lua_getuservalue">lua_getuservalue</A><BR>
<A HREF="manual.html#lua_insert">lua_insert</A><BR>
<A HREF="manual.html#lua_isboolean">lua_isboolean</A><BR>
<A HREF="manual.html#lua_iscfunction">lua_iscfunction</A><BR>
<A HREF="manual.html#lua_isfunction">lua_isfunction</A><BR>
<A HREF="manual.html#lua_islightuserdata">lua_islightuserdata</A><BR>
<A HREF="manual.html#lua_isnil">lua_isnil</A><BR>
<A HREF="manual.html#lua_isnone">lua_isnone</A><BR>
<A HREF="manual.html#lua_isnoneornil">lua_isnoneornil</A><BR>
<A HREF="manual.html#lua_isnumber">lua_isnumber</A><BR>
<A HREF="manual.html#lua_isstring">lua_isstring</A><BR>
<A HREF="manual.html#lua_istable">lua_istable</A><BR>
<A HREF="manual.html#lua_isthread">lua_isthread</A><BR>
<A HREF="manual.html#lua_isuserdata">lua_isuserdata</A><BR>
<A HREF="manual.html#lua_len">lua_len</A><BR>
<A HREF="manual.html#lua_load">lua_load</A><BR>
<A HREF="manual.html#lua_newstate">lua_newstate</A><BR>
<A HREF="manual.html#lua_newtable">lua_newtable</A><BR>
<A HREF="manual.html#lua_newthread">lua_newthread</A><BR>
<A HREF="manual.html#lua_newuserdata">lua_newuserdata</A><BR>
<A HREF="manual.html#lua_next">lua_next</A><BR>
<A HREF="manual.html#lua_pcall">lua_pcall</A><BR>
<A HREF="manual.html#lua_pcallk">lua_pcallk</A><BR>
<A HREF="manual.html#lua_pop">lua_pop</A><BR>
<A HREF="manual.html#lua_pushboolean">lua_pushboolean</A><BR>
<A HREF="manual.html#lua_pushcclosure">lua_pushcclosure</A><BR>
<A HREF="manual.html#lua_pushcfunction">lua_pushcfunction</A><BR>
<A HREF="manual.html#lua_pushfstring">lua_pushfstring</A><BR>
<A HREF="manual.html#lua_pushglobaltable">lua_pushglobaltable</A><BR>
<A HREF="manual.html#lua_pushinteger">lua_pushinteger</A><BR>
<A HREF="manual.html#lua_pushlightuserdata">lua_pushlightuserdata</A><BR>
<A HREF="manual.html#lua_pushliteral">lua_pushliteral</A><BR>
<A HREF="manual.html#lua_pushlstring">lua_pushlstring</A><BR>
<A HREF="manual.html#lua_pushnil">lua_pushnil</A><BR>
<A HREF="manual.html#lua_pushnumber">lua_pushnumber</A><BR>
<A HREF="manual.html#lua_pushstring">lua_pushstring</A><BR>
<A HREF="manual.html#lua_pushthread">lua_pushthread</A><BR>
<A HREF="manual.html#lua_pushunsigned">lua_pushunsigned</A><BR>
<A HREF="manual.html#lua_pushvalue">lua_pushvalue</A><BR>
<A HREF="manual.html#lua_pushvfstring">lua_pushvfstring</A><BR>
<A HREF="manual.html#lua_rawequal">lua_rawequal</A><BR>
<A HREF="manual.html#lua_rawget">lua_rawget</A><BR>
<A HREF="manual.html#lua_rawgeti">lua_rawgeti</A><BR>
<A HREF="manual.html#lua_rawgetp">lua_rawgetp</A><BR>
<A HREF="manual.html#lua_rawlen">lua_rawlen</A><BR>
<A HREF="manual.html#lua_rawset">lua_rawset</A><BR>
<A HREF="manual.html#lua_rawseti">lua_rawseti</A><BR>
<A HREF="manual.html#lua_rawsetp">lua_rawsetp</A><BR>
<A HREF="manual.html#lua_register">lua_register</A><BR>
<A HREF="manual.html#lua_remove">lua_remove</A><BR>
<A HREF="manual.html#lua_replace">lua_replace</A><BR>
<A HREF="manual.html#lua_resume">lua_resume</A><BR>
<A HREF="manual.html#lua_setallocf">lua_setallocf</A><BR>
<A HREF="manual.html#lua_setfield">lua_setfield</A><BR>
<A HREF="manual.html#lua_setglobal">lua_setglobal</A><BR>
<A HREF="manual.html#lua_sethook">lua_sethook</A><BR>
<A HREF="manual.html#lua_setlocal">lua_setlocal</A><BR>
<A HREF="manual.html#lua_setmetatable">lua_setmetatable</A><BR>
<A HREF="manual.html#lua_settable">lua_settable</A><BR>
<A HREF="manual.html#lua_settop">lua_settop</A><BR>
<A HREF="manual.html#lua_setupvalue">lua_setupvalue</A><BR>
<A HREF="manual.html#lua_setuservalue">lua_setuservalue</A><BR>
<A HREF="manual.html#lua_status">lua_status</A><BR>
<A HREF="manual.html#lua_toboolean">lua_toboolean</A><BR>
<A HREF="manual.html#lua_tocfunction">lua_tocfunction</A><BR>
<A HREF="manual.html#lua_tointeger">lua_tointeger</A><BR>
<A HREF="manual.html#lua_tointegerx">lua_tointegerx</A><BR>
<A HREF="manual.html#lua_tolstring">lua_tolstring</A><BR>
<A HREF="manual.html#lua_tonumber">lua_tonumber</A><BR>
<A HREF="manual.html#lua_tonumberx">lua_tonumberx</A><BR>
<A HREF="manual.html#lua_topointer">lua_topointer</A><BR>
<A HREF="manual.html#lua_tostring">lua_tostring</A><BR>
<A HREF="manual.html#lua_tothread">lua_tothread</A><BR>
<A HREF="manual.html#lua_tounsigned">lua_tounsigned</A><BR>
<A HREF="manual.html#lua_tounsignedx">lua_tounsignedx</A><BR>
<A HREF="manual.html#lua_touserdata">lua_touserdata</A><BR>
<A HREF="manual.html#lua_type">lua_type</A><BR>
<A HREF="manual.html#lua_typename">lua_typename</A><BR>
<A HREF="manual.html#lua_upvalueid">lua_upvalueid</A><BR>
<A HREF="manual.html#lua_upvalueindex">lua_upvalueindex</A><BR>
<A HREF="manual.html#lua_upvaluejoin">lua_upvaluejoin</A><BR>
<A HREF="manual.html#lua_version">lua_version</A><BR>
<A HREF="manual.html#lua_xmove">lua_xmove</A><BR>
<A HREF="manual.html#lua_yield">lua_yield</A><BR>
<A HREF="manual.html#lua_yieldk">lua_yieldk</A><BR>
</TD>
<TD>
<H3>auxiliary library</H3>
<P>
<A HREF="manual.html#luaL_Buffer">luaL_Buffer</A><BR>
<A HREF="manual.html#luaL_Reg">luaL_Reg</A><BR>
<P>
<A HREF="manual.html#luaL_addchar">luaL_addchar</A><BR>
<A HREF="manual.html#luaL_addlstring">luaL_addlstring</A><BR>
<A HREF="manual.html#luaL_addsize">luaL_addsize</A><BR>
<A HREF="manual.html#luaL_addstring">luaL_addstring</A><BR>
<A HREF="manual.html#luaL_addvalue">luaL_addvalue</A><BR>
<A HREF="manual.html#luaL_argcheck">luaL_argcheck</A><BR>
<A HREF="manual.html#luaL_argerror">luaL_argerror</A><BR>
<A HREF="manual.html#luaL_buffinit">luaL_buffinit</A><BR>
<A HREF="manual.html#luaL_buffinitsize">luaL_buffinitsize</A><BR>
<A HREF="manual.html#luaL_callmeta">luaL_callmeta</A><BR>
<A HREF="manual.html#luaL_checkany">luaL_checkany</A><BR>
<A HREF="manual.html#luaL_checkint">luaL_checkint</A><BR>
<A HREF="manual.html#luaL_checkinteger">luaL_checkinteger</A><BR>
<A HREF="manual.html#luaL_checklong">luaL_checklong</A><BR>
<A HREF="manual.html#luaL_checklstring">luaL_checklstring</A><BR>
<A HREF="manual.html#luaL_checknumber">luaL_checknumber</A><BR>
<A HREF="manual.html#luaL_checkoption">luaL_checkoption</A><BR>
<A HREF="manual.html#luaL_checkstack">luaL_checkstack</A><BR>
<A HREF="manual.html#luaL_checkstring">luaL_checkstring</A><BR>
<A HREF="manual.html#luaL_checktype">luaL_checktype</A><BR>
<A HREF="manual.html#luaL_checkudata">luaL_checkudata</A><BR>
<A HREF="manual.html#luaL_checkunsigned">luaL_checkunsigned</A><BR>
<A HREF="manual.html#luaL_checkversion">luaL_checkversion</A><BR>
<A HREF="manual.html#luaL_dofile">luaL_dofile</A><BR>
<A HREF="manual.html#luaL_dostring">luaL_dostring</A><BR>
<A HREF="manual.html#luaL_error">luaL_error</A><BR>
<A HREF="manual.html#luaL_execresult">luaL_execresult</A><BR>
<A HREF="manual.html#luaL_fileresult">luaL_fileresult</A><BR>
<A HREF="manual.html#luaL_getmetafield">luaL_getmetafield</A><BR>
<A HREF="manual.html#luaL_getmetatable">luaL_getmetatable</A><BR>
<A HREF="manual.html#luaL_getsubtable">luaL_getsubtable</A><BR>
<A HREF="manual.html#luaL_gsub">luaL_gsub</A><BR>
<A HREF="manual.html#luaL_len">luaL_len</A><BR>
<A HREF="manual.html#luaL_loadbuffer">luaL_loadbuffer</A><BR>
<A HREF="manual.html#luaL_loadbufferx">luaL_loadbufferx</A><BR>
<A HREF="manual.html#luaL_loadfile">luaL_loadfile</A><BR>
<A HREF="manual.html#luaL_loadfilex">luaL_loadfilex</A><BR>
<A HREF="manual.html#luaL_loadstring">luaL_loadstring</A><BR>
<A HREF="manual.html#luaL_newlib">luaL_newlib</A><BR>
<A HREF="manual.html#luaL_newlibtable">luaL_newlibtable</A><BR>
<A HREF="manual.html#luaL_newmetatable">luaL_newmetatable</A><BR>
<A HREF="manual.html#luaL_newstate">luaL_newstate</A><BR>
<A HREF="manual.html#luaL_openlibs">luaL_openlibs</A><BR>
<A HREF="manual.html#luaL_optint">luaL_optint</A><BR>
<A HREF="manual.html#luaL_optinteger">luaL_optinteger</A><BR>
<A HREF="manual.html#luaL_optlong">luaL_optlong</A><BR>
<A HREF="manual.html#luaL_optlstring">luaL_optlstring</A><BR>
<A HREF="manual.html#luaL_optnumber">luaL_optnumber</A><BR>
<A HREF="manual.html#luaL_optstring">luaL_optstring</A><BR>
<A HREF="manual.html#luaL_optunsigned">luaL_optunsigned</A><BR>
<A HREF="manual.html#luaL_prepbuffer">luaL_prepbuffer</A><BR>
<A HREF="manual.html#luaL_prepbuffsize">luaL_prepbuffsize</A><BR>
<A HREF="manual.html#luaL_pushresult">luaL_pushresult</A><BR>
<A HREF="manual.html#luaL_pushresultsize">luaL_pushresultsize</A><BR>
<A HREF="manual.html#luaL_ref">luaL_ref</A><BR>
<A HREF="manual.html#luaL_requiref">luaL_requiref</A><BR>
<A HREF="manual.html#luaL_setfuncs">luaL_setfuncs</A><BR>
<A HREF="manual.html#luaL_setmetatable">luaL_setmetatable</A><BR>
<A HREF="manual.html#luaL_testudata">luaL_testudata</A><BR>
<A HREF="manual.html#luaL_tolstring">luaL_tolstring</A><BR>
<A HREF="manual.html#luaL_traceback">luaL_traceback</A><BR>
<A HREF="manual.html#luaL_typename">luaL_typename</A><BR>
<A HREF="manual.html#luaL_unref">luaL_unref</A><BR>
<A HREF="manual.html#luaL_where">luaL_where</A><BR>
</TD>
</TR>
</TABLE>
<HR>
<SMALL CLASS="footer">
Last update:
Tue Mar 12 11:22:18 BRT 2013
</SMALL>
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Last change: revised for Lua 5.2.2
-->
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.\" $Id: lua.man,v 1.13 2011/11/16 17:16:53 lhf Exp $
.TH LUA 1 "$Date: 2011/11/16 17:16:53 $"
.SH NAME
lua \- Lua interpreter
.SH SYNOPSIS
.B lua
[
.I options
]
[
.I script
[
.I args
]
]
.SH DESCRIPTION
.B lua
is the standalone Lua interpreter.
It loads and executes Lua programs,
either in textual source form or
in precompiled binary form.
(Precompiled binaries are output by
.BR luac ,
the Lua compiler.)
.B lua
can be used as a batch interpreter and also interactively.
.LP
The given
.I options
are handled in order and then
the Lua program in file
.I script
is loaded and executed.
The given
.I args
are available to
.I script
as strings in a global table named
.BR arg .
If no options or arguments are given,
then
.B "\-v \-i"
is assumed when the standard input is a terminal;
otherwise,
.B "\-"
is assumed.
.LP
In interactive mode,
.B lua
prompts the user,
reads lines from the standard input,
and executes them as they are read.
If a line does not contain a complete statement,
then a secondary prompt is displayed and
lines are read until a complete statement is formed or
a syntax error is found.
If a line starts with
.BR '=' ,
then
.B lua
evaluates and displays
the values of the expressions in the remainder of the line.
.LP
At the very start,
before even handling the command line,
.B lua
checks the contents of the environment variables
.B LUA_INIT_5_2
or
.BR LUA_INIT ,
in that order.
If the contents is of the form
.RI '@ filename ',
then
.I filename
is executed.
Otherwise, the string is assumed to be a Lua statement and is executed.
.SH OPTIONS
.TP
.BI \-e " stat"
execute statement
.IR stat .
.TP
.B \-i
enter interactive mode after executing
.IR script .
.TP
.BI \-l " name"
execute the equivalent of
.IB name =require(' name ')
before executing
.IR script .
.TP
.B \-v
show version information.
.TP
.B \-E
ignore environment variables.
.TP
.B \-\-
stop handling options.
.TP
.B \-
stop handling options and execute the standard input as a file.
.SH "SEE ALSO"
.BR luac (1)
.br
The documentation at lua.org,
especially section 7 of the reference manual.
.SH DIAGNOSTICS
Error messages should be self explanatory.
.SH AUTHORS
R. Ierusalimschy,
L. H. de Figueiredo,
W. Celes
.\" EOF

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.\" $Id: luac.man,v 1.29 2011/11/16 13:53:40 lhf Exp $
.TH LUAC 1 "$Date: 2011/11/16 13:53:40 $"
.SH NAME
luac \- Lua compiler
.SH SYNOPSIS
.B luac
[
.I options
] [
.I filenames
]
.SH DESCRIPTION
.B luac
is the Lua compiler.
It translates programs written in the Lua programming language
into binary files containing precompiled chunks
that can be later loaded and executed.
.LP
The main advantages of precompiling chunks are:
faster loading,
protecting source code from accidental user changes,
and
off-line syntax checking.
Precompiling does not imply faster execution
because in Lua chunks are always compiled into bytecodes before being executed.
.B luac
simply allows those bytecodes to be saved in a file for later execution.
Precompiled chunks are not necessarily smaller than the corresponding source.
The main goal in precompiling is faster loading.
.LP
In the command line,
you can mix
text files containing Lua source and
binary files containing precompiled chunks.
.B luac
produces a single output file containing the combined bytecodes
for all files given.
Executing the combined file is equivalent to executing the given files.
By default,
the output file is named
.BR luac.out ,
but you can change this with the
.B \-o
option.
.LP
Precompiled chunks are
.I not
portable across different architectures.
Moreover,
the internal format of precompiled chunks
is likely to change when a new version of Lua is released.
Make sure you save the source files of all Lua programs that you precompile.
.LP
.SH OPTIONS
.TP
.B \-l
produce a listing of the compiled bytecode for Lua's virtual machine.
Listing bytecodes is useful to learn about Lua's virtual machine.
If no files are given, then
.B luac
loads
.B luac.out
and lists its contents.
Use
.B \-l \-l
for a full listing.
.TP
.BI \-o " file"
output to
.IR file ,
instead of the default
.BR luac.out .
(You can use
.B "'\-'"
for standard output,
but not on platforms that open standard output in text mode.)
The output file may be one of the given files because
all files are loaded before the output file is written.
Be careful not to overwrite precious files.
.TP
.B \-p
load files but do not generate any output file.
Used mainly for syntax checking and for testing precompiled chunks:
corrupted files will probably generate errors when loaded.
If no files are given, then
.B luac
loads
.B luac.out
and tests its contents.
No messages are displayed if the file loads without errors.
.TP
.B \-s
strip debug information before writing the output file.
This saves some space in very large chunks,
but if errors occur when running a stripped chunk,
then the error messages may not contain the full information they usually do.
In particular,
line numbers and names of local variables are lost.
.TP
.B \-v
show version information.
.TP
.B \-\-
stop handling options.
.TP
.B \-
stop handling options and process standard input.
.SH "SEE ALSO"
.BR lua (1)
.br
The documentation at lua.org.
.SH DIAGNOSTICS
Error messages should be self explanatory.
.SH AUTHORS
R. Ierusalimschy,
L. H. de Figueiredo,
W. Celes
.\" EOF

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<TITLE>Lua 5.2 readme</TITLE>
<LINK REL="stylesheet" TYPE="text/css" HREF="lua.css">
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1">
<STYLE TYPE="text/css">
blockquote, .display {
border: solid #a0a0a0 2px ;
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.display {
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}
dl.display dd {
padding-bottom: 0.2em ;
}
tt, kbd, code {
font-size: 12pt ;
}
</STYLE>
</HEAD>
<BODY>
<HR>
<H1>
<A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="Lua" BORDER=0></A>
Welcome to Lua 5.2
</H1>
<P>
<A HREF="#about">about</A>
&middot;
<A HREF="#install">installation</A>
&middot;
<A HREF="#changes">changes</A>
&middot;
<A HREF="#license">license</A>
&middot;
<A HREF="contents.html">reference manual</A>
<H2><A NAME="about">About Lua</A></H2>
<P>
Lua is a powerful, fast, lightweight, embeddable scripting language
developed by a
<A HREF="http://www.lua.org/authors.html">team</A>
at
<A HREF="http://www.puc-rio.br/">PUC-Rio</A>,
the Pontifical Catholic University of Rio de Janeiro in Brazil.
Lua is
<A HREF="#license">free software</A>
used in many products and projects around the world.
<P>
Lua's
<A HREF="http://www.lua.org/">official web site</A>
provides complete information
about Lua,
including
an
<A HREF="http://www.lua.org/about.html">executive summary</A>
and
updated
<A HREF="http://www.lua.org/docs.html">documentation</A>,
especially the
<A HREF="http://www.lua.org/manual/5.2/">reference manual</A>,
which may differ slightly from the
<A HREF="contents.html">local copy</A>
distributed in this package.
<H2><A NAME="install">Installing Lua</A></H2>
<P>
Lua is distributed in
<A HREF="http://www.lua.org/ftp/">source</A>
form.
You need to build it before using it.
Building Lua should be straightforward
because
Lua is implemented in pure ANSI C and compiles unmodified in all known
platforms that have an ANSI C compiler.
Lua also compiles unmodified as C++.
The instructions given below for building Lua are for Unix-like platforms.
See also
<A HREF="#other">instructions for other systems</A>
and
<A HREF="#customization">customization options</A>.
<P>
If you don't have the time or the inclination to compile Lua yourself,
get a binary from
<A HREF="http://lua-users.org/wiki/LuaBinaries">LuaBinaries</A>.
Try also
<A HREF="http://luaforwindows.luaforge.net/">Lua for Windows</A>,
an easy-to-use distribution of Lua that includes many useful libraries.
<H3>Building Lua</H3>
<P>
In most Unix-like platforms, simply do "<KBD>make</KBD>" with a suitable target.
Here are the details.
<OL>
<LI>
Open a terminal window and move to
the top-level directory, which is named <TT>lua-5.2.3</TT>.
The Makefile there controls both the build process and the installation process.
<P>
<LI>
Do "<KBD>make</KBD>" and see if your platform is listed.
The platforms currently supported are:
<P>
<P CLASS="display">
aix ansi bsd freebsd generic linux macosx mingw posix solaris
</P>
<P>
If your platform is listed, just do "<KBD>make xxx</KBD>", where xxx
is your platform name.
<P>
If your platform is not listed, try the closest one or posix, generic,
ansi, in this order.
<P>
<LI>
The compilation takes only a few moments
and produces three files in the <TT>src</TT> directory:
lua (the interpreter),
luac (the compiler),
and liblua.a (the library).
<P>
<LI>
To check that Lua has been built correctly, do "<KBD>make test</KBD>"
after building Lua. This will run the interpreter and print its version string.
</OL>
<P>
If you're running Linux and get compilation errors,
make sure you have installed the <TT>readline</TT> development package.
If you get link errors after that,
then try "<KBD>make linux MYLIBS=-ltermcap</KBD>".
<H3>Installing Lua</H3>
<P>
Once you have built Lua, you may want to install it in an official
place in your system. In this case, do "<KBD>make install</KBD>". The official
place and the way to install files are defined in the Makefile. You'll
probably need the right permissions to install files.
<P>
To build and install Lua in one step, do "<KBD>make xxx install</KBD>",
where xxx is your platform name.
<P>
To install Lua locally, do "<KBD>make local</KBD>".
This will create a directory <TT>install</TT> with subdirectories
<TT>bin</TT>, <TT>include</TT>, <TT>lib</TT>, <TT>man</TT>,
and install Lua as listed below.
To install Lua locally, but in some other directory, do
"<KBD>make install INSTALL_TOP=xxx</KBD>", where xxx is your chosen directory.
<DL CLASS="display">
<DT>
bin:
<DD>
lua luac
<DT>
include:
<DD>
lua.h luaconf.h lualib.h lauxlib.h lua.hpp
<DT>
lib:
<DD>
liblua.a
<DT>
man/man1:
<DD>
lua.1 luac.1
</DL>
<P>
These are the only directories you need for development.
If you only want to run Lua programs,
you only need the files in bin and man.
The files in include and lib are needed for
embedding Lua in C or C++ programs.
<H3><A NAME="customization">Customization</A></H3>
<P>
Three kinds of things can be customized by editing a file:
<UL>
<LI> Where and how to install Lua &mdash; edit <TT>Makefile</TT>.
<LI> How to build Lua &mdash; edit <TT>src/Makefile</TT>.
<LI> Lua features &mdash; edit <TT>src/luaconf.h</TT>.
</UL>
<P>
You don't actually need to edit the Makefiles because you may set the
relevant variables in the command line when invoking make.
Nevertheless, it's probably best to edit and save the Makefiles to
record the changes you need.
<P>
On the other hand, if you need to customize some Lua features, you'll need
to edit <TT>src/luaconf.h</TT> before building and installing Lua.
The edited file will be the one installed, and
it will be used by any Lua clients that you build, to ensure consistency.
Further customization is available to experts by editing the Lua sources.
<P>
We strongly recommend that you enable dynamic loading in <TT>src/luaconf.h</TT>.
This is done automatically for all platforms listed above that have
this feature and also for Windows.
<H3><A NAME="other">Building Lua on other systems</A></H3>
<P>
If you're not using the usual Unix tools, then the instructions for
building Lua depend on the compiler you use. You'll need to create
projects (or whatever your compiler uses) for building the library,
the interpreter, and the compiler, as follows:
<DL CLASS="display">
<DT>
library:
<DD>
lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c
lmem.c lobject.c lopcodes.c lparser.c lstate.c lstring.c ltable.c
ltm.c lundump.c lvm.c lzio.c
lauxlib.c lbaselib.c lbitlib.c lcorolib.c ldblib.c liolib.c
lmathlib.c loslib.c lstrlib.c ltablib.c loadlib.c linit.c
<DT>
interpreter:
<DD>
library, lua.c
<DT>
compiler:
<DD>
library, luac.c
</DL>
<P>
To use Lua as a library in your own programs you'll need to know how to
create and use libraries with your compiler. Moreover, to dynamically load
C libraries for Lua you'll need to know how to create dynamic libraries
and you'll need to make sure that the Lua API functions are accessible to
those dynamic libraries &mdash; but <EM>don't</EM> link the Lua library
into each dynamic library. For Unix, we recommend that the Lua library
be linked statically into the host program and its symbols exported for
dynamic linking; <TT>src/Makefile</TT> does this for the Lua interpreter.
For Windows, we recommend that the Lua library be a DLL.
<P>
As mentioned above, you may edit <TT>src/luaconf.h</TT> to customize
some features before building Lua.
<H2><A NAME="changes">Changes since Lua 5.1</A></H2>
<P>
Here are the main changes introduced in Lua 5.2.
The
<A HREF="contents.html">reference manual</A>
lists the
<A HREF="manual.html#8">incompatibilities</A> that had to be introduced.
<H3>Main changes</H3>
<UL>
<LI> yieldable pcall and metamethods
<LI> new lexical scheme for globals
<LI> ephemeron tables
<LI> new library for bitwise operations
<LI> light C functions
<LI> emergency garbage collector
<LI> <CODE>goto</CODE> statement
<LI> finalizers for tables
</UL>
Here are the other changes introduced in Lua 5.2:
<H3>Language</H3>
<UL>
<LI> no more fenv for threads or functions
<LI> tables honor the <CODE>__len</CODE> metamethod
<LI> hex and <CODE>\z</CODE> escapes in strings
<LI> support for hexadecimal floats
<LI> order metamethods work for different types
<LI> no more verification of opcode consistency
<LI> hook event "tail return" replaced by "tail call"
<LI> empty statement
<LI> <CODE>break</CODE> statement may appear in the middle of a block
</UL>
<H3>Libraries</H3>
<UL>
<LI> arguments for function called through <CODE>xpcall</CODE>
<LI> optional 'mode' argument to load and loadfile (to control binary x text)
<LI> optional 'env' argument to load and loadfile (environment for loaded chunk)
<LI> <CODE>loadlib</CODE> may load libraries with global names (RTLD_GLOBAL)
<LI> new function <CODE>package.searchpath</CODE>
<LI> modules receive their paths when loaded
<LI> optional base in <CODE>math.log</CODE>
<LI> optional separator in <CODE>string.rep</CODE>
<LI> <CODE>file:write</CODE> returns <CODE>file</CODE>
<LI> closing a pipe returns exit status
<LI> <CODE>os.exit</CODE> may close state
<LI> new metamethods <CODE>__pairs</CODE> and <CODE>__ipairs</CODE>
<LI> new option 'isrunning' for <CODE>collectgarbage</CODE> and <CODE>lua_gc</CODE>
<LI> frontier patterns
<LI> <CODE>\0</CODE> in patterns
<LI> new option <CODE>*L</CODE> for <CODE>io.read</CODE>
<LI> options for <CODE>io.lines</CODE>
<LI> <CODE>debug.getlocal</CODE> can access function varargs
</UL>
<H3>C API</H3>
<UL>
<LI> main thread predefined in the registry
<LI> new functions
<CODE>lua_absindex</CODE>,
<CODE>lua_arith</CODE>,
<CODE>lua_compare</CODE>,
<CODE>lua_copy</CODE>,
<CODE>lua_len</CODE>,
<CODE>lua_rawgetp</CODE>,
<CODE>lua_rawsetp</CODE>,
<CODE>lua_upvalueid</CODE>,
<CODE>lua_upvaluejoin</CODE>,
<CODE>lua_version</CODE>.
<LI> new functions
<CODE>luaL_checkversion</CODE>,
<CODE>luaL_setmetatable</CODE>,
<CODE>luaL_testudata</CODE>,
<CODE>luaL_tolstring</CODE>.
<LI> <CODE>lua_pushstring</CODE> and <CODE>pushlstring</CODE> return string
<LI> <CODE>nparams</CODE> and <CODE>isvararg</CODE> available in debug API
<LI> new <CODE>lua_Unsigned</CODE>
</UL>
<H3>Implementation</H3>
<UL>
<LI> max constants per function raised to 2<SUP>26</SUP>
<LI> generational mode for garbage collection (experimental)
<LI> NaN trick (experimental)
<LI> internal (immutable) version of ctypes
<LI> simpler implementation for string buffers
<LI> parser uses much less C-stack space (no more auto arrays)
</UL>
<H3>Lua standalone interpreter</H3>
<UL>
<LI> new <CODE>-E</CODE> option to avoid environment variables
<LI> handling of non-string error messages
</UL>
<H2><A NAME="license">License</A></H2>
<A HREF="http://www.opensource.org/docs/definition.php">
<IMG SRC="osi-certified-72x60.png" ALIGN="right" BORDER="0" ALT="[osi certified]" STYLE="padding-left: 30px ;">
</A>
<P>
Lua is free software distributed under the terms of the
<A HREF="http://www.opensource.org/licenses/mit-license.html">MIT license</A>
reproduced below;
it may be used for any purpose, including commercial purposes,
at absolutely no cost without having to ask us.
The only requirement is that if you do use Lua,
then you should give us credit by including the appropriate copyright notice somewhere in your product or its documentation.
For details, see
<A HREF="http://www.lua.org/license.html">this</A>.
<BLOCKQUOTE STYLE="padding-bottom: 0em">
Copyright &copy; 1994&ndash;2013 Lua.org, PUC-Rio.
<P>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
<P>
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
<P>
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
</BLOCKQUOTE>
<P>
<HR>
<SMALL CLASS="footer">
Last update:
Sat Nov 9 22:39:16 BRST 2013
</SMALL>
<!--
Last change: revised for Lua 5.2.3
-->
</BODY>
</HTML>

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@ -0,0 +1,12 @@
-- defines a factorial function
function fact (n)
if n == 0 then
return 1
else
return n * fact(n-1)
end
end
print("enter a number:")
a = io.read("*number") -- read a number
print(fact(a))

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print("Hello UEFI World")

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# Makefile for building Lua
# See ../doc/readme.html for installation and customization instructions.
# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
# Your platform. See PLATS for possible values.
PLAT= none
CC= gcc
CFLAGS= -O2 -Wall -DLUA_COMPAT_ALL $(SYSCFLAGS) $(MYCFLAGS)
LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
LIBS= -lm $(SYSLIBS) $(MYLIBS)
AR= ar rcu
RANLIB= ranlib
RM= rm -f
SYSCFLAGS=
SYSLDFLAGS=
SYSLIBS=
MYCFLAGS=
MYLDFLAGS=
MYLIBS=
MYOBJS=
# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
PLATS= aix ansi bsd freebsd generic linux macosx mingw posix solaris
LUA_A= liblua.a
CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \
ltm.o lundump.o lvm.o lzio.o
LIB_O= lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \
lmathlib.o loslib.o lstrlib.o ltablib.o loadlib.o linit.o
BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS)
LUA_T= lua
LUA_O= lua.o
LUAC_T= luac
LUAC_O= luac.o
ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O)
ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
ALL_A= $(LUA_A)
# Targets start here.
default: $(PLAT)
all: $(ALL_T)
o: $(ALL_O)
a: $(ALL_A)
$(LUA_A): $(BASE_O)
$(AR) $@ $(BASE_O)
$(RANLIB) $@
$(LUA_T): $(LUA_O) $(LUA_A)
$(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
$(LUAC_T): $(LUAC_O) $(LUA_A)
$(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS)
clean:
$(RM) $(ALL_T) $(ALL_O)
depend:
@$(CC) $(CFLAGS) -MM l*.c
echo:
@echo "PLAT= $(PLAT)"
@echo "CC= $(CC)"
@echo "CFLAGS= $(CFLAGS)"
@echo "LDFLAGS= $(SYSLDFLAGS)"
@echo "LIBS= $(LIBS)"
@echo "AR= $(AR)"
@echo "RANLIB= $(RANLIB)"
@echo "RM= $(RM)"
# Convenience targets for popular platforms
ALL= all
none:
@echo "Please do 'make PLATFORM' where PLATFORM is one of these:"
@echo " $(PLATS)"
aix:
$(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall"
ansi:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_ANSI"
bsd:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-Wl,-E"
freebsd:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -lreadline"
generic: $(ALL)
linux:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"
macosx:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline" CC=cc
mingw:
$(MAKE) "LUA_A=lua52.dll" "LUA_T=lua.exe" \
"AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \
"SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe
$(MAKE) "LUAC_T=luac.exe" luac.exe
posix:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX"
solaris:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl"
# list targets that do not create files (but not all makes understand .PHONY)
.PHONY: all $(PLATS) default o a clean depend echo none
# DO NOT DELETE
lapi.o: lapi.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h ltm.h \
lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h ltable.h lundump.h \
lvm.h
lauxlib.o: lauxlib.c lua.h luaconf.h lauxlib.h
lbaselib.o: lbaselib.c lua.h luaconf.h lauxlib.h lualib.h
lbitlib.o: lbitlib.c lua.h luaconf.h lauxlib.h lualib.h
lcode.o: lcode.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h ldo.h lgc.h \
lstring.h ltable.h lvm.h
lcorolib.o: lcorolib.c lua.h luaconf.h lauxlib.h lualib.h
lctype.o: lctype.c lctype.h lua.h luaconf.h llimits.h
ldblib.o: ldblib.c lua.h luaconf.h lauxlib.h lualib.h
ldebug.o: ldebug.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h \
ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h ldebug.h ldo.h \
lfunc.h lstring.h lgc.h ltable.h lvm.h
ldo.o: ldo.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h ltm.h \
lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h lparser.h \
lstring.h ltable.h lundump.h lvm.h
ldump.o: ldump.c lua.h luaconf.h lobject.h llimits.h lstate.h ltm.h \
lzio.h lmem.h lundump.h
lfunc.o: lfunc.c lua.h luaconf.h lfunc.h lobject.h llimits.h lgc.h \
lstate.h ltm.h lzio.h lmem.h
lgc.o: lgc.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
linit.o: linit.c lua.h luaconf.h lualib.h lauxlib.h
liolib.o: liolib.c lua.h luaconf.h lauxlib.h lualib.h
llex.o: llex.c lua.h luaconf.h lctype.h llimits.h ldo.h lobject.h \
lstate.h ltm.h lzio.h lmem.h llex.h lparser.h lstring.h lgc.h ltable.h
lmathlib.o: lmathlib.c lua.h luaconf.h lauxlib.h lualib.h
lmem.o: lmem.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
ltm.h lzio.h lmem.h ldo.h lgc.h
loadlib.o: loadlib.c lua.h luaconf.h lauxlib.h lualib.h
lobject.o: lobject.c lua.h luaconf.h lctype.h llimits.h ldebug.h lstate.h \
lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h lvm.h
lopcodes.o: lopcodes.c lopcodes.h llimits.h lua.h luaconf.h
loslib.o: loslib.c lua.h luaconf.h lauxlib.h lualib.h
lparser.o: lparser.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h ldo.h lfunc.h \
lstring.h lgc.h ltable.h
lstate.o: lstate.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h \
ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h lstring.h \
ltable.h
lstring.o: lstring.c lua.h luaconf.h lmem.h llimits.h lobject.h lstate.h \
ltm.h lzio.h lstring.h lgc.h
lstrlib.o: lstrlib.c lua.h luaconf.h lauxlib.h lualib.h
ltable.o: ltable.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
ltablib.o: ltablib.c lua.h luaconf.h lauxlib.h lualib.h
ltm.o: ltm.c lua.h luaconf.h lobject.h llimits.h lstate.h ltm.h lzio.h \
lmem.h lstring.h lgc.h ltable.h
lua.o: lua.c lua.h luaconf.h lauxlib.h lualib.h
luac.o: luac.c lua.h luaconf.h lauxlib.h lobject.h llimits.h lstate.h \
ltm.h lzio.h lmem.h lundump.h ldebug.h lopcodes.h
lundump.o: lundump.c lua.h luaconf.h ldebug.h lstate.h lobject.h \
llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h lundump.h
lvm.o: lvm.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h ltable.h lvm.h
lzio.o: lzio.c lua.h luaconf.h llimits.h lmem.h lstate.h lobject.h ltm.h \
lzio.h

File diff suppressed because it is too large Load Diff

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@ -0,0 +1,24 @@
/*
** $Id: lapi.h,v 2.7.1.1 2013/04/12 18:48:47 roberto Exp $
** Auxiliary functions from Lua API
** See Copyright Notice in lua.h
*/
#ifndef lapi_h
#define lapi_h
#include "llimits.h"
#include "lstate.h"
#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \
"stack overflow");}
#define adjustresults(L,nres) \
{ if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \
"not enough elements in the stack")
#endif

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@ -0,0 +1,959 @@
/*
** $Id: lauxlib.c,v 1.248.1.1 2013/04/12 18:48:47 roberto Exp $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* This file uses only the official API of Lua.
** Any function declared here could be written as an application function.
*/
#define lauxlib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
/*
** {======================================================
** Traceback
** =======================================================
*/
#define LEVELS1 12 /* size of the first part of the stack */
#define LEVELS2 10 /* size of the second part of the stack */
/*
** search for 'objidx' in table at index -1.
** return 1 + string at top if find a good name.
*/
static int findfield (lua_State *L, int objidx, int level) {
if (level == 0 || !lua_istable(L, -1))
return 0; /* not found */
lua_pushnil(L); /* start 'next' loop */
while (lua_next(L, -2)) { /* for each pair in table */
if (lua_type(L, -2) == LUA_TSTRING) { /* ignore non-string keys */
if (lua_rawequal(L, objidx, -1)) { /* found object? */
lua_pop(L, 1); /* remove value (but keep name) */
return 1;
}
else if (findfield(L, objidx, level - 1)) { /* try recursively */
lua_remove(L, -2); /* remove table (but keep name) */
lua_pushliteral(L, ".");
lua_insert(L, -2); /* place '.' between the two names */
lua_concat(L, 3);
return 1;
}
}
lua_pop(L, 1); /* remove value */
}
return 0; /* not found */
}
static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
int top = lua_gettop(L);
lua_getinfo(L, "f", ar); /* push function */
lua_pushglobaltable(L);
if (findfield(L, top + 1, 2)) {
lua_copy(L, -1, top + 1); /* move name to proper place */
lua_pop(L, 2); /* remove pushed values */
return 1;
}
else {
lua_settop(L, top); /* remove function and global table */
return 0;
}
}
static void pushfuncname (lua_State *L, lua_Debug *ar) {
if (*ar->namewhat != '\0') /* is there a name? */
lua_pushfstring(L, "function " LUA_QS, ar->name);
else if (*ar->what == 'm') /* main? */
lua_pushliteral(L, "main chunk");
else if (*ar->what == 'C') {
if (pushglobalfuncname(L, ar)) {
lua_pushfstring(L, "function " LUA_QS, lua_tostring(L, -1));
lua_remove(L, -2); /* remove name */
}
else
lua_pushliteral(L, "?");
}
else
lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
}
static int countlevels (lua_State *L) {
lua_Debug ar;
int li = 1, le = 1;
/* find an upper bound */
while (lua_getstack(L, le, &ar)) { li = le; le *= 2; }
/* do a binary search */
while (li < le) {
int m = (li + le)/2;
if (lua_getstack(L, m, &ar)) li = m + 1;
else le = m;
}
return le - 1;
}
LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
const char *msg, int level) {
lua_Debug ar;
int top = lua_gettop(L);
int numlevels = countlevels(L1);
int mark = (numlevels > LEVELS1 + LEVELS2) ? LEVELS1 : 0;
if (msg) lua_pushfstring(L, "%s\n", msg);
lua_pushliteral(L, "stack traceback:");
while (lua_getstack(L1, level++, &ar)) {
if (level == mark) { /* too many levels? */
lua_pushliteral(L, "\n\t..."); /* add a '...' */
level = numlevels - LEVELS2; /* and skip to last ones */
}
else {
lua_getinfo(L1, "Slnt", &ar);
lua_pushfstring(L, "\n\t%s:", ar.short_src);
if (ar.currentline > 0)
lua_pushfstring(L, "%d:", ar.currentline);
lua_pushliteral(L, " in ");
pushfuncname(L, &ar);
if (ar.istailcall)
lua_pushliteral(L, "\n\t(...tail calls...)");
lua_concat(L, lua_gettop(L) - top);
}
}
lua_concat(L, lua_gettop(L) - top);
}
/* }====================================================== */
/*
** {======================================================
** Error-report functions
** =======================================================
*/
LUALIB_API int luaL_argerror (lua_State *L, int narg, const char *extramsg) {
lua_Debug ar;
if (!lua_getstack(L, 0, &ar)) /* no stack frame? */
return luaL_error(L, "bad argument #%d (%s)", narg, extramsg);
lua_getinfo(L, "n", &ar);
if (strcmp(ar.namewhat, "method") == 0) {
narg--; /* do not count `self' */
if (narg == 0) /* error is in the self argument itself? */
return luaL_error(L, "calling " LUA_QS " on bad self (%s)",
ar.name, extramsg);
}
if (ar.name == NULL)
ar.name = (pushglobalfuncname(L, &ar)) ? lua_tostring(L, -1) : "?";
return luaL_error(L, "bad argument #%d to " LUA_QS " (%s)",
narg, ar.name, extramsg);
}
static int typeerror (lua_State *L, int narg, const char *tname) {
const char *msg = lua_pushfstring(L, "%s expected, got %s",
tname, luaL_typename(L, narg));
return luaL_argerror(L, narg, msg);
}
static void tag_error (lua_State *L, int narg, int tag) {
typeerror(L, narg, lua_typename(L, tag));
}
LUALIB_API void luaL_where (lua_State *L, int level) {
lua_Debug ar;
if (lua_getstack(L, level, &ar)) { /* check function at level */
lua_getinfo(L, "Sl", &ar); /* get info about it */
if (ar.currentline > 0) { /* is there info? */
lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline);
return;
}
}
lua_pushliteral(L, ""); /* else, no information available... */
}
LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
va_list argp;
va_start(argp, fmt);
luaL_where(L, 1);
lua_pushvfstring(L, fmt, argp);
va_end(argp);
lua_concat(L, 2);
return lua_error(L);
}
LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) {
int en = errno; /* calls to Lua API may change this value */
if (stat) {
lua_pushboolean(L, 1);
return 1;
}
else {
lua_pushnil(L);
if (fname)
lua_pushfstring(L, "%s: %s", fname, strerror(en));
else
lua_pushstring(L, strerror(en));
lua_pushinteger(L, en);
return 3;
}
}
#if !defined(inspectstat) /* { */
#if defined(LUA_USE_POSIX)
#include <sys/wait.h>
/*
** use appropriate macros to interpret 'pclose' return status
*/
#define inspectstat(stat,what) \
if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \
else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; }
#else
#define inspectstat(stat,what) /* no op */
#endif
#endif /* } */
LUALIB_API int luaL_execresult (lua_State *L, int stat) {
const char *what = "exit"; /* type of termination */
if (stat == -1) /* error? */
return luaL_fileresult(L, 0, NULL);
else {
inspectstat(stat, what); /* interpret result */
if (*what == 'e' && stat == 0) /* successful termination? */
lua_pushboolean(L, 1);
else
lua_pushnil(L);
lua_pushstring(L, what);
lua_pushinteger(L, stat);
return 3; /* return true/nil,what,code */
}
}
/* }====================================================== */
/*
** {======================================================
** Userdata's metatable manipulation
** =======================================================
*/
LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) {
luaL_getmetatable(L, tname); /* try to get metatable */
if (!lua_isnil(L, -1)) /* name already in use? */
return 0; /* leave previous value on top, but return 0 */
lua_pop(L, 1);
lua_newtable(L); /* create metatable */
lua_pushvalue(L, -1);
lua_setfield(L, LUA_REGISTRYINDEX, tname); /* registry.name = metatable */
return 1;
}
LUALIB_API void luaL_setmetatable (lua_State *L, const char *tname) {
luaL_getmetatable(L, tname);
lua_setmetatable(L, -2);
}
LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) {
void *p = lua_touserdata(L, ud);
if (p != NULL) { /* value is a userdata? */
if (lua_getmetatable(L, ud)) { /* does it have a metatable? */
luaL_getmetatable(L, tname); /* get correct metatable */
if (!lua_rawequal(L, -1, -2)) /* not the same? */
p = NULL; /* value is a userdata with wrong metatable */
lua_pop(L, 2); /* remove both metatables */
return p;
}
}
return NULL; /* value is not a userdata with a metatable */
}
LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) {
void *p = luaL_testudata(L, ud, tname);
if (p == NULL) typeerror(L, ud, tname);
return p;
}
/* }====================================================== */
/*
** {======================================================
** Argument check functions
** =======================================================
*/
LUALIB_API int luaL_checkoption (lua_State *L, int narg, const char *def,
const char *const lst[]) {
const char *name = (def) ? luaL_optstring(L, narg, def) :
luaL_checkstring(L, narg);
int i;
for (i=0; lst[i]; i++)
if (strcmp(lst[i], name) == 0)
return i;
return luaL_argerror(L, narg,
lua_pushfstring(L, "invalid option " LUA_QS, name));
}
LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) {
/* keep some extra space to run error routines, if needed */
const int extra = LUA_MINSTACK;
if (!lua_checkstack(L, space + extra)) {
if (msg)
luaL_error(L, "stack overflow (%s)", msg);
else
luaL_error(L, "stack overflow");
}
}
LUALIB_API void luaL_checktype (lua_State *L, int narg, int t) {
if (lua_type(L, narg) != t)
tag_error(L, narg, t);
}
LUALIB_API void luaL_checkany (lua_State *L, int narg) {
if (lua_type(L, narg) == LUA_TNONE)
luaL_argerror(L, narg, "value expected");
}
LUALIB_API const char *luaL_checklstring (lua_State *L, int narg, size_t *len) {
const char *s = lua_tolstring(L, narg, len);
if (!s) tag_error(L, narg, LUA_TSTRING);
return s;
}
LUALIB_API const char *luaL_optlstring (lua_State *L, int narg,
const char *def, size_t *len) {
if (lua_isnoneornil(L, narg)) {
if (len)
*len = (def ? strlen(def) : 0);
return def;
}
else return luaL_checklstring(L, narg, len);
}
LUALIB_API lua_Number luaL_checknumber (lua_State *L, int narg) {
int isnum;
lua_Number d = lua_tonumberx(L, narg, &isnum);
if (!isnum)
tag_error(L, narg, LUA_TNUMBER);
return d;
}
LUALIB_API lua_Number luaL_optnumber (lua_State *L, int narg, lua_Number def) {
return luaL_opt(L, luaL_checknumber, narg, def);
}
LUALIB_API lua_Integer luaL_checkinteger (lua_State *L, int narg) {
int isnum;
lua_Integer d = lua_tointegerx(L, narg, &isnum);
if (!isnum)
tag_error(L, narg, LUA_TNUMBER);
return d;
}
LUALIB_API lua_Unsigned luaL_checkunsigned (lua_State *L, int narg) {
int isnum;
lua_Unsigned d = lua_tounsignedx(L, narg, &isnum);
if (!isnum)
tag_error(L, narg, LUA_TNUMBER);
return d;
}
LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int narg,
lua_Integer def) {
return luaL_opt(L, luaL_checkinteger, narg, def);
}
LUALIB_API lua_Unsigned luaL_optunsigned (lua_State *L, int narg,
lua_Unsigned def) {
return luaL_opt(L, luaL_checkunsigned, narg, def);
}
/* }====================================================== */
/*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*/
/*
** check whether buffer is using a userdata on the stack as a temporary
** buffer
*/
#define buffonstack(B) ((B)->b != (B)->initb)
/*
** returns a pointer to a free area with at least 'sz' bytes
*/
LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
lua_State *L = B->L;
if (B->size - B->n < sz) { /* not enough space? */
char *newbuff;
size_t newsize = B->size * 2; /* double buffer size */
if (newsize - B->n < sz) /* not big enough? */
newsize = B->n + sz;
if (newsize < B->n || newsize - B->n < sz)
luaL_error(L, "buffer too large");
/* create larger buffer */
newbuff = (char *)lua_newuserdata(L, newsize * sizeof(char));
/* move content to new buffer */
memcpy(newbuff, B->b, B->n * sizeof(char));
if (buffonstack(B))
lua_remove(L, -2); /* remove old buffer */
B->b = newbuff;
B->size = newsize;
}
return &B->b[B->n];
}
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
char *b = luaL_prepbuffsize(B, l);
memcpy(b, s, l * sizeof(char));
luaL_addsize(B, l);
}
LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) {
luaL_addlstring(B, s, strlen(s));
}
LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
lua_State *L = B->L;
lua_pushlstring(L, B->b, B->n);
if (buffonstack(B))
lua_remove(L, -2); /* remove old buffer */
}
LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) {
luaL_addsize(B, sz);
luaL_pushresult(B);
}
LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
lua_State *L = B->L;
size_t l;
const char *s = lua_tolstring(L, -1, &l);
if (buffonstack(B))
lua_insert(L, -2); /* put value below buffer */
luaL_addlstring(B, s, l);
lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */
}
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
B->L = L;
B->b = B->initb;
B->n = 0;
B->size = LUAL_BUFFERSIZE;
}
LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) {
luaL_buffinit(L, B);
return luaL_prepbuffsize(B, sz);
}
/* }====================================================== */
/*
** {======================================================
** Reference system
** =======================================================
*/
/* index of free-list header */
#define freelist 0
LUALIB_API int luaL_ref (lua_State *L, int t) {
int ref;
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* remove from stack */
return LUA_REFNIL; /* `nil' has a unique fixed reference */
}
t = lua_absindex(L, t);
lua_rawgeti(L, t, freelist); /* get first free element */
ref = (int)lua_tointeger(L, -1); /* ref = t[freelist] */
lua_pop(L, 1); /* remove it from stack */
if (ref != 0) { /* any free element? */
lua_rawgeti(L, t, ref); /* remove it from list */
lua_rawseti(L, t, freelist); /* (t[freelist] = t[ref]) */
}
else /* no free elements */
ref = (int)lua_rawlen(L, t) + 1; /* get a new reference */
lua_rawseti(L, t, ref);
return ref;
}
LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
if (ref >= 0) {
t = lua_absindex(L, t);
lua_rawgeti(L, t, freelist);
lua_rawseti(L, t, ref); /* t[ref] = t[freelist] */
lua_pushinteger(L, ref);
lua_rawseti(L, t, freelist); /* t[freelist] = ref */
}
}
/* }====================================================== */
/*
** {======================================================
** Load functions
** =======================================================
*/
typedef struct LoadF {
int n; /* number of pre-read characters */
FILE *f; /* file being read */
char buff[LUAL_BUFFERSIZE]; /* area for reading file */
} LoadF;
static const char *getF (lua_State *L, void *ud, size_t *size) {
LoadF *lf = (LoadF *)ud;
(void)L; /* not used */
if (lf->n > 0) { /* are there pre-read characters to be read? */
*size = lf->n; /* return them (chars already in buffer) */
lf->n = 0; /* no more pre-read characters */
}
else { /* read a block from file */
/* 'fread' can return > 0 *and* set the EOF flag. If next call to
'getF' called 'fread', it might still wait for user input.
The next check avoids this problem. */
if (feof(lf->f)) return NULL;
*size = fread(lf->buff, 1, sizeof(lf->buff), lf->f); /* read block */
}
return lf->buff;
}
static int errfile (lua_State *L, const char *what, int fnameindex) {
const char *serr = strerror(errno);
const char *filename = lua_tostring(L, fnameindex) + 1;
lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
lua_remove(L, fnameindex);
return LUA_ERRFILE;
}
static int skipBOM (LoadF *lf) {
const char *p = "\xEF\xBB\xBF"; /* Utf8 BOM mark */
int c;
lf->n = 0;
do {
c = getc(lf->f);
if (c == EOF || c != *(const unsigned char *)p++) return c;
lf->buff[lf->n++] = (char)c; /* to be read by the parser */
} while (*p != '\0');
lf->n = 0; /* prefix matched; discard it */
return getc(lf->f); /* return next character */
}
/*
** reads the first character of file 'f' and skips an optional BOM mark
** in its beginning plus its first line if it starts with '#'. Returns
** true if it skipped the first line. In any case, '*cp' has the
** first "valid" character of the file (after the optional BOM and
** a first-line comment).
*/
static int skipcomment (LoadF *lf, int *cp) {
int c = *cp = skipBOM(lf);
if (c == '#') { /* first line is a comment (Unix exec. file)? */
do { /* skip first line */
c = getc(lf->f);
} while (c != EOF && c != '\n') ;
*cp = getc(lf->f); /* skip end-of-line, if present */
return 1; /* there was a comment */
}
else return 0; /* no comment */
}
LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename,
const char *mode) {
LoadF lf;
int status, readstatus;
int c;
int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */
if (filename == NULL) {
lua_pushliteral(L, "=stdin");
lf.f = stdin;
}
else {
lua_pushfstring(L, "@%s", filename);
lf.f = fopen(filename, "r");
if (lf.f == NULL) return errfile(L, "open", fnameindex);
}
if (skipcomment(&lf, &c)) /* read initial portion */
lf.buff[lf.n++] = '\n'; /* add line to correct line numbers */
if (c == LUA_SIGNATURE[0] && filename) { /* binary file? */
lf.f = freopen(filename, "rb", lf.f); /* reopen in binary mode */
if (lf.f == NULL) return errfile(L, "reopen", fnameindex);
skipcomment(&lf, &c); /* re-read initial portion */
}
if (c != EOF)
lf.buff[lf.n++] = (char)c; /* 'c' is the first character of the stream */
status = lua_load(L, getF, &lf, lua_tostring(L, -1), mode);
readstatus = ferror(lf.f);
if (filename) fclose(lf.f); /* close file (even in case of errors) */
if (readstatus) {
lua_settop(L, fnameindex); /* ignore results from `lua_load' */
return errfile(L, "read", fnameindex);
}
lua_remove(L, fnameindex);
return status;
}
typedef struct LoadS {
const char *s;
size_t size;
} LoadS;
static const char *getS (lua_State *L, void *ud, size_t *size) {
LoadS *ls = (LoadS *)ud;
(void)L; /* not used */
if (ls->size == 0) return NULL;
*size = ls->size;
ls->size = 0;
return ls->s;
}
LUALIB_API int luaL_loadbufferx (lua_State *L, const char *buff, size_t size,
const char *name, const char *mode) {
LoadS ls;
ls.s = buff;
ls.size = size;
return lua_load(L, getS, &ls, name, mode);
}
LUALIB_API int luaL_loadstring (lua_State *L, const char *s) {
return luaL_loadbuffer(L, s, strlen(s), s);
}
/* }====================================================== */
LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) {
if (!lua_getmetatable(L, obj)) /* no metatable? */
return 0;
lua_pushstring(L, event);
lua_rawget(L, -2);
if (lua_isnil(L, -1)) {
lua_pop(L, 2); /* remove metatable and metafield */
return 0;
}
else {
lua_remove(L, -2); /* remove only metatable */
return 1;
}
}
LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
obj = lua_absindex(L, obj);
if (!luaL_getmetafield(L, obj, event)) /* no metafield? */
return 0;
lua_pushvalue(L, obj);
lua_call(L, 1, 1);
return 1;
}
LUALIB_API int luaL_len (lua_State *L, int idx) {
int l;
int isnum;
lua_len(L, idx);
l = (int)lua_tointegerx(L, -1, &isnum);
if (!isnum)
luaL_error(L, "object length is not a number");
lua_pop(L, 1); /* remove object */
return l;
}
LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
if (!luaL_callmeta(L, idx, "__tostring")) { /* no metafield? */
switch (lua_type(L, idx)) {
case LUA_TNUMBER:
case LUA_TSTRING:
lua_pushvalue(L, idx);
break;
case LUA_TBOOLEAN:
lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false"));
break;
case LUA_TNIL:
lua_pushliteral(L, "nil");
break;
default:
lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
lua_topointer(L, idx));
break;
}
}
return lua_tolstring(L, -1, len);
}
/*
** {======================================================
** Compatibility with 5.1 module functions
** =======================================================
*/
#if defined(LUA_COMPAT_MODULE)
static const char *luaL_findtable (lua_State *L, int idx,
const char *fname, int szhint) {
const char *e;
if (idx) lua_pushvalue(L, idx);
do {
e = strchr(fname, '.');
if (e == NULL) e = fname + strlen(fname);
lua_pushlstring(L, fname, e - fname);
lua_rawget(L, -2);
if (lua_isnil(L, -1)) { /* no such field? */
lua_pop(L, 1); /* remove this nil */
lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */
lua_pushlstring(L, fname, e - fname);
lua_pushvalue(L, -2);
lua_settable(L, -4); /* set new table into field */
}
else if (!lua_istable(L, -1)) { /* field has a non-table value? */
lua_pop(L, 2); /* remove table and value */
return fname; /* return problematic part of the name */
}
lua_remove(L, -2); /* remove previous table */
fname = e + 1;
} while (*e == '.');
return NULL;
}
/*
** Count number of elements in a luaL_Reg list.
*/
static int libsize (const luaL_Reg *l) {
int size = 0;
for (; l && l->name; l++) size++;
return size;
}
/*
** Find or create a module table with a given name. The function
** first looks at the _LOADED table and, if that fails, try a
** global variable with that name. In any case, leaves on the stack
** the module table.
*/
LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname,
int sizehint) {
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1); /* get _LOADED table */
lua_getfield(L, -1, modname); /* get _LOADED[modname] */
if (!lua_istable(L, -1)) { /* not found? */
lua_pop(L, 1); /* remove previous result */
/* try global variable (and create one if it does not exist) */
lua_pushglobaltable(L);
if (luaL_findtable(L, 0, modname, sizehint) != NULL)
luaL_error(L, "name conflict for module " LUA_QS, modname);
lua_pushvalue(L, -1);
lua_setfield(L, -3, modname); /* _LOADED[modname] = new table */
}
lua_remove(L, -2); /* remove _LOADED table */
}
LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
const luaL_Reg *l, int nup) {
luaL_checkversion(L);
if (libname) {
luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */
lua_insert(L, -(nup + 1)); /* move library table to below upvalues */
}
if (l)
luaL_setfuncs(L, l, nup);
else
lua_pop(L, nup); /* remove upvalues */
}
#endif
/* }====================================================== */
/*
** set functions from list 'l' into table at top - 'nup'; each
** function gets the 'nup' elements at the top as upvalues.
** Returns with only the table at the stack.
*/
LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
luaL_checkversion(L);
luaL_checkstack(L, nup, "too many upvalues");
for (; l->name != NULL; l++) { /* fill the table with given functions */
int i;
for (i = 0; i < nup; i++) /* copy upvalues to the top */
lua_pushvalue(L, -nup);
lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */
lua_setfield(L, -(nup + 2), l->name);
}
lua_pop(L, nup); /* remove upvalues */
}
/*
** ensure that stack[idx][fname] has a table and push that table
** into the stack
*/
LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) {
lua_getfield(L, idx, fname);
if (lua_istable(L, -1)) return 1; /* table already there */
else {
lua_pop(L, 1); /* remove previous result */
idx = lua_absindex(L, idx);
lua_newtable(L);
lua_pushvalue(L, -1); /* copy to be left at top */
lua_setfield(L, idx, fname); /* assign new table to field */
return 0; /* false, because did not find table there */
}
}
/*
** stripped-down 'require'. Calls 'openf' to open a module,
** registers the result in 'package.loaded' table and, if 'glb'
** is true, also registers the result in the global table.
** Leaves resulting module on the top.
*/
LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) {
lua_pushcfunction(L, openf);
lua_pushstring(L, modname); /* argument to open function */
lua_call(L, 1, 1); /* open module */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_pushvalue(L, -2); /* make copy of module (call result) */
lua_setfield(L, -2, modname); /* _LOADED[modname] = module */
lua_pop(L, 1); /* remove _LOADED table */
if (glb) {
lua_pushvalue(L, -1); /* copy of 'mod' */
lua_setglobal(L, modname); /* _G[modname] = module */
}
}
LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p,
const char *r) {
const char *wild;
size_t l = strlen(p);
luaL_Buffer b;
luaL_buffinit(L, &b);
while ((wild = strstr(s, p)) != NULL) {
luaL_addlstring(&b, s, wild - s); /* push prefix */
luaL_addstring(&b, r); /* push replacement in place of pattern */
s = wild + l; /* continue after `p' */
}
luaL_addstring(&b, s); /* push last suffix */
luaL_pushresult(&b);
return lua_tostring(L, -1);
}
static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
(void)ud; (void)osize; /* not used */
if (nsize == 0) {
free(ptr);
return NULL;
}
else
return realloc(ptr, nsize);
}
static int panic (lua_State *L) {
luai_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n",
lua_tostring(L, -1));
return 0; /* return to Lua to abort */
}
LUALIB_API lua_State *luaL_newstate (void) {
lua_State *L = lua_newstate(l_alloc, NULL);
if (L) lua_atpanic(L, &panic);
return L;
}
LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver) {
const lua_Number *v = lua_version(L);
if (v != lua_version(NULL))
luaL_error(L, "multiple Lua VMs detected");
else if (*v != ver)
luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f",
ver, *v);
/* check conversions number -> integer types */
lua_pushnumber(L, -(lua_Number)0x1234);
if (lua_tointeger(L, -1) != -0x1234 ||
lua_tounsigned(L, -1) != (lua_Unsigned)-0x1234)
luaL_error(L, "bad conversion number->int;"
" must recompile Lua with proper settings");
lua_pop(L, 1);
}

View File

@ -0,0 +1,15 @@
/** @file
Stub header to allow the "real" headers to reside in StdLib/Include/Lua
yet have the Lua sources build without having to change the include
directives in each file.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Lua/lauxlib.h>

View File

@ -0,0 +1,458 @@
/*
** $Id: lbaselib.c,v 1.276.1.1 2013/04/12 18:48:47 roberto Exp $
** Basic library
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define lbaselib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
static int luaB_print (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
lua_getglobal(L, "tostring");
for (i=1; i<=n; i++) {
const char *s;
size_t l;
lua_pushvalue(L, -1); /* function to be called */
lua_pushvalue(L, i); /* value to print */
lua_call(L, 1, 1);
s = lua_tolstring(L, -1, &l); /* get result */
if (s == NULL)
return luaL_error(L,
LUA_QL("tostring") " must return a string to " LUA_QL("print"));
if (i>1) luai_writestring("\t", 1);
luai_writestring(s, l);
lua_pop(L, 1); /* pop result */
}
luai_writeline();
return 0;
}
#define SPACECHARS " \f\n\r\t\v"
static int luaB_tonumber (lua_State *L) {
if (lua_isnoneornil(L, 2)) { /* standard conversion */
int isnum;
lua_Number n = lua_tonumberx(L, 1, &isnum);
if (isnum) {
lua_pushnumber(L, n);
return 1;
} /* else not a number; must be something */
luaL_checkany(L, 1);
}
else {
size_t l;
const char *s = luaL_checklstring(L, 1, &l);
const char *e = s + l; /* end point for 's' */
int base = luaL_checkint(L, 2);
int neg = 0;
luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
s += strspn(s, SPACECHARS); /* skip initial spaces */
if (*s == '-') { s++; neg = 1; } /* handle signal */
else if (*s == '+') s++;
if (isalnum((unsigned char)*s)) {
lua_Number n = 0;
do {
int digit = (isdigit((unsigned char)*s)) ? *s - '0'
: toupper((unsigned char)*s) - 'A' + 10;
if (digit >= base) break; /* invalid numeral; force a fail */
n = n * (lua_Number)base + (lua_Number)digit;
s++;
} while (isalnum((unsigned char)*s));
s += strspn(s, SPACECHARS); /* skip trailing spaces */
if (s == e) { /* no invalid trailing characters? */
lua_pushnumber(L, (neg) ? -n : n);
return 1;
} /* else not a number */
} /* else not a number */
}
lua_pushnil(L); /* not a number */
return 1;
}
static int luaB_error (lua_State *L) {
int level = luaL_optint(L, 2, 1);
lua_settop(L, 1);
if (lua_isstring(L, 1) && level > 0) { /* add extra information? */
luaL_where(L, level);
lua_pushvalue(L, 1);
lua_concat(L, 2);
}
return lua_error(L);
}
static int luaB_getmetatable (lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L);
return 1; /* no metatable */
}
luaL_getmetafield(L, 1, "__metatable");
return 1; /* returns either __metatable field (if present) or metatable */
}
static int luaB_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
luaL_checktype(L, 1, LUA_TTABLE);
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
"nil or table expected");
if (luaL_getmetafield(L, 1, "__metatable"))
return luaL_error(L, "cannot change a protected metatable");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1;
}
static int luaB_rawequal (lua_State *L) {
luaL_checkany(L, 1);
luaL_checkany(L, 2);
lua_pushboolean(L, lua_rawequal(L, 1, 2));
return 1;
}
static int luaB_rawlen (lua_State *L) {
int t = lua_type(L, 1);
luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
"table or string expected");
lua_pushinteger(L, lua_rawlen(L, 1));
return 1;
}
static int luaB_rawget (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
lua_settop(L, 2);
lua_rawget(L, 1);
return 1;
}
static int luaB_rawset (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
luaL_checkany(L, 2);
luaL_checkany(L, 3);
lua_settop(L, 3);
lua_rawset(L, 1);
return 1;
}
static int luaB_collectgarbage (lua_State *L) {
static const char *const opts[] = {"stop", "restart", "collect",
"count", "step", "setpause", "setstepmul",
"setmajorinc", "isrunning", "generational", "incremental", NULL};
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
LUA_GCSETMAJORINC, LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
int ex = luaL_optint(L, 2, 0);
int res = lua_gc(L, o, ex);
switch (o) {
case LUA_GCCOUNT: {
int b = lua_gc(L, LUA_GCCOUNTB, 0);
lua_pushnumber(L, res + ((lua_Number)b/1024));
lua_pushinteger(L, b);
return 2;
}
case LUA_GCSTEP: case LUA_GCISRUNNING: {
lua_pushboolean(L, res);
return 1;
}
default: {
lua_pushinteger(L, res);
return 1;
}
}
}
static int luaB_type (lua_State *L) {
luaL_checkany(L, 1);
lua_pushstring(L, luaL_typename(L, 1));
return 1;
}
static int pairsmeta (lua_State *L, const char *method, int iszero,
lua_CFunction iter) {
if (!luaL_getmetafield(L, 1, method)) { /* no metamethod? */
luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */
lua_pushcfunction(L, iter); /* will return generator, */
lua_pushvalue(L, 1); /* state, */
if (iszero) lua_pushinteger(L, 0); /* and initial value */
else lua_pushnil(L);
}
else {
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
lua_call(L, 1, 3); /* get 3 values from metamethod */
}
return 3;
}
static int luaB_next (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 2); /* create a 2nd argument if there isn't one */
if (lua_next(L, 1))
return 2;
else {
lua_pushnil(L);
return 1;
}
}
static int luaB_pairs (lua_State *L) {
return pairsmeta(L, "__pairs", 0, luaB_next);
}
static int ipairsaux (lua_State *L) {
int i = luaL_checkint(L, 2);
luaL_checktype(L, 1, LUA_TTABLE);
i++; /* next value */
lua_pushinteger(L, i);
lua_rawgeti(L, 1, i);
return (lua_isnil(L, -1)) ? 1 : 2;
}
static int luaB_ipairs (lua_State *L) {
return pairsmeta(L, "__ipairs", 1, ipairsaux);
}
static int load_aux (lua_State *L, int status, int envidx) {
if (status == LUA_OK) {
if (envidx != 0) { /* 'env' parameter? */
lua_pushvalue(L, envidx); /* environment for loaded function */
if (!lua_setupvalue(L, -2, 1)) /* set it as 1st upvalue */
lua_pop(L, 1); /* remove 'env' if not used by previous call */
}
return 1;
}
else { /* error (message is on top of the stack) */
lua_pushnil(L);
lua_insert(L, -2); /* put before error message */
return 2; /* return nil plus error message */
}
}
static int luaB_loadfile (lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
const char *mode = luaL_optstring(L, 2, NULL);
int env = (!lua_isnone(L, 3) ? 3 : 0); /* 'env' index or 0 if no 'env' */
int status = luaL_loadfilex(L, fname, mode);
return load_aux(L, status, env);
}
/*
** {======================================================
** Generic Read function
** =======================================================
*/
/*
** reserved slot, above all arguments, to hold a copy of the returned
** string to avoid it being collected while parsed. 'load' has four
** optional arguments (chunk, source name, mode, and environment).
*/
#define RESERVEDSLOT 5
/*
** Reader for generic `load' function: `lua_load' uses the
** stack for internal stuff, so the reader cannot change the
** stack top. Instead, it keeps its resulting string in a
** reserved slot inside the stack.
*/
static const char *generic_reader (lua_State *L, void *ud, size_t *size) {
(void)(ud); /* not used */
luaL_checkstack(L, 2, "too many nested functions");
lua_pushvalue(L, 1); /* get function */
lua_call(L, 0, 1); /* call it */
if (lua_isnil(L, -1)) {
lua_pop(L, 1); /* pop result */
*size = 0;
return NULL;
}
else if (!lua_isstring(L, -1))
luaL_error(L, "reader function must return a string");
lua_replace(L, RESERVEDSLOT); /* save string in reserved slot */
return lua_tolstring(L, RESERVEDSLOT, size);
}
static int luaB_load (lua_State *L) {
int status;
size_t l;
const char *s = lua_tolstring(L, 1, &l);
const char *mode = luaL_optstring(L, 3, "bt");
int env = (!lua_isnone(L, 4) ? 4 : 0); /* 'env' index or 0 if no 'env' */
if (s != NULL) { /* loading a string? */
const char *chunkname = luaL_optstring(L, 2, s);
status = luaL_loadbufferx(L, s, l, chunkname, mode);
}
else { /* loading from a reader function */
const char *chunkname = luaL_optstring(L, 2, "=(load)");
luaL_checktype(L, 1, LUA_TFUNCTION);
lua_settop(L, RESERVEDSLOT); /* create reserved slot */
status = lua_load(L, generic_reader, NULL, chunkname, mode);
}
return load_aux(L, status, env);
}
/* }====================================================== */
static int dofilecont (lua_State *L) {
return lua_gettop(L) - 1;
}
static int luaB_dofile (lua_State *L) {
const char *fname = luaL_optstring(L, 1, NULL);
lua_settop(L, 1);
if (luaL_loadfile(L, fname) != LUA_OK)
return lua_error(L);
lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
return dofilecont(L);
}
static int luaB_assert (lua_State *L) {
if (!lua_toboolean(L, 1))
return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
return lua_gettop(L);
}
static int luaB_select (lua_State *L) {
int n = lua_gettop(L);
if (lua_type(L, 1) == LUA_TSTRING && *lua_tostring(L, 1) == '#') {
lua_pushinteger(L, n-1);
return 1;
}
else {
int i = luaL_checkint(L, 1);
if (i < 0) i = n + i;
else if (i > n) i = n;
luaL_argcheck(L, 1 <= i, 1, "index out of range");
return n - i;
}
}
static int finishpcall (lua_State *L, int status) {
if (!lua_checkstack(L, 1)) { /* no space for extra boolean? */
lua_settop(L, 0); /* create space for return values */
lua_pushboolean(L, 0);
lua_pushstring(L, "stack overflow");
return 2; /* return false, msg */
}
lua_pushboolean(L, status); /* first result (status) */
lua_replace(L, 1); /* put first result in first slot */
return lua_gettop(L);
}
static int pcallcont (lua_State *L) {
int status = lua_getctx(L, NULL);
return finishpcall(L, (status == LUA_YIELD));
}
static int luaB_pcall (lua_State *L) {
int status;
luaL_checkany(L, 1);
lua_pushnil(L);
lua_insert(L, 1); /* create space for status result */
status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, pcallcont);
return finishpcall(L, (status == LUA_OK));
}
static int luaB_xpcall (lua_State *L) {
int status;
int n = lua_gettop(L);
luaL_argcheck(L, n >= 2, 2, "value expected");
lua_pushvalue(L, 1); /* exchange function... */
lua_copy(L, 2, 1); /* ...and error handler */
lua_replace(L, 2);
status = lua_pcallk(L, n - 2, LUA_MULTRET, 1, 0, pcallcont);
return finishpcall(L, (status == LUA_OK));
}
static int luaB_tostring (lua_State *L) {
luaL_checkany(L, 1);
luaL_tolstring(L, 1, NULL);
return 1;
}
static const luaL_Reg base_funcs[] = {
{"assert", luaB_assert},
{"collectgarbage", luaB_collectgarbage},
{"dofile", luaB_dofile},
{"error", luaB_error},
{"getmetatable", luaB_getmetatable},
{"ipairs", luaB_ipairs},
{"loadfile", luaB_loadfile},
{"load", luaB_load},
#if defined(LUA_COMPAT_LOADSTRING)
{"loadstring", luaB_load},
#endif
{"next", luaB_next},
{"pairs", luaB_pairs},
{"pcall", luaB_pcall},
{"print", luaB_print},
{"rawequal", luaB_rawequal},
{"rawlen", luaB_rawlen},
{"rawget", luaB_rawget},
{"rawset", luaB_rawset},
{"select", luaB_select},
{"setmetatable", luaB_setmetatable},
{"tonumber", luaB_tonumber},
{"tostring", luaB_tostring},
{"type", luaB_type},
{"xpcall", luaB_xpcall},
{NULL, NULL}
};
LUAMOD_API int luaopen_base (lua_State *L) {
/* set global _G */
lua_pushglobaltable(L);
lua_pushglobaltable(L);
lua_setfield(L, -2, "_G");
/* open lib into global table */
luaL_setfuncs(L, base_funcs, 0);
lua_pushliteral(L, LUA_VERSION);
lua_setfield(L, -2, "_VERSION"); /* set global _VERSION */
return 1;
}

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@ -0,0 +1,212 @@
/*
** $Id: lbitlib.c,v 1.18.1.2 2013/07/09 18:01:41 roberto Exp $
** Standard library for bitwise operations
** See Copyright Notice in lua.h
*/
#define lbitlib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/* number of bits to consider in a number */
#if !defined(LUA_NBITS)
#define LUA_NBITS 32
#endif
#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))
/* macro to trim extra bits */
#define trim(x) ((x) & ALLONES)
/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */
#define mask(n) (~((ALLONES << 1) << ((n) - 1)))
typedef lua_Unsigned b_uint;
static b_uint andaux (lua_State *L) {
int i, n = lua_gettop(L);
b_uint r = ~(b_uint)0;
for (i = 1; i <= n; i++)
r &= luaL_checkunsigned(L, i);
return trim(r);
}
static int b_and (lua_State *L) {
b_uint r = andaux(L);
lua_pushunsigned(L, r);
return 1;
}
static int b_test (lua_State *L) {
b_uint r = andaux(L);
lua_pushboolean(L, r != 0);
return 1;
}
static int b_or (lua_State *L) {
int i, n = lua_gettop(L);
b_uint r = 0;
for (i = 1; i <= n; i++)
r |= luaL_checkunsigned(L, i);
lua_pushunsigned(L, trim(r));
return 1;
}
static int b_xor (lua_State *L) {
int i, n = lua_gettop(L);
b_uint r = 0;
for (i = 1; i <= n; i++)
r ^= luaL_checkunsigned(L, i);
lua_pushunsigned(L, trim(r));
return 1;
}
static int b_not (lua_State *L) {
b_uint r = ~luaL_checkunsigned(L, 1);
lua_pushunsigned(L, trim(r));
return 1;
}
static int b_shift (lua_State *L, b_uint r, int i) {
if (i < 0) { /* shift right? */
i = -i;
r = trim(r);
if (i >= LUA_NBITS) r = 0;
else r >>= i;
}
else { /* shift left */
if (i >= LUA_NBITS) r = 0;
else r <<= i;
r = trim(r);
}
lua_pushunsigned(L, r);
return 1;
}
static int b_lshift (lua_State *L) {
return b_shift(L, luaL_checkunsigned(L, 1), luaL_checkint(L, 2));
}
static int b_rshift (lua_State *L) {
return b_shift(L, luaL_checkunsigned(L, 1), -luaL_checkint(L, 2));
}
static int b_arshift (lua_State *L) {
b_uint r = luaL_checkunsigned(L, 1);
int i = luaL_checkint(L, 2);
if (i < 0 || !(r & ((b_uint)1 << (LUA_NBITS - 1))))
return b_shift(L, r, -i);
else { /* arithmetic shift for 'negative' number */
if (i >= LUA_NBITS) r = ALLONES;
else
r = trim((r >> i) | ~(~(b_uint)0 >> i)); /* add signal bit */
lua_pushunsigned(L, r);
return 1;
}
}
static int b_rot (lua_State *L, int i) {
b_uint r = luaL_checkunsigned(L, 1);
i &= (LUA_NBITS - 1); /* i = i % NBITS */
r = trim(r);
if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */
r = (r << i) | (r >> (LUA_NBITS - i));
lua_pushunsigned(L, trim(r));
return 1;
}
static int b_lrot (lua_State *L) {
return b_rot(L, luaL_checkint(L, 2));
}
static int b_rrot (lua_State *L) {
return b_rot(L, -luaL_checkint(L, 2));
}
/*
** get field and width arguments for field-manipulation functions,
** checking whether they are valid.
** ('luaL_error' called without 'return' to avoid later warnings about
** 'width' being used uninitialized.)
*/
static int fieldargs (lua_State *L, int farg, int *width) {
int f = luaL_checkint(L, farg);
int w = luaL_optint(L, farg + 1, 1);
luaL_argcheck(L, 0 <= f, farg, "field cannot be negative");
luaL_argcheck(L, 0 < w, farg + 1, "width must be positive");
if (f + w > LUA_NBITS)
luaL_error(L, "trying to access non-existent bits");
*width = w;
return f;
}
static int b_extract (lua_State *L) {
int w;
b_uint r = luaL_checkunsigned(L, 1);
int f = fieldargs(L, 2, &w);
r = (r >> f) & mask(w);
lua_pushunsigned(L, r);
return 1;
}
static int b_replace (lua_State *L) {
int w;
b_uint r = luaL_checkunsigned(L, 1);
b_uint v = luaL_checkunsigned(L, 2);
int f = fieldargs(L, 3, &w);
int m = mask(w);
v &= m; /* erase bits outside given width */
r = (r & ~(m << f)) | (v << f);
lua_pushunsigned(L, r);
return 1;
}
static const luaL_Reg bitlib[] = {
{"arshift", b_arshift},
{"band", b_and},
{"bnot", b_not},
{"bor", b_or},
{"bxor", b_xor},
{"btest", b_test},
{"extract", b_extract},
{"lrotate", b_lrot},
{"lshift", b_lshift},
{"replace", b_replace},
{"rrotate", b_rrot},
{"rshift", b_rshift},
{NULL, NULL}
};
LUAMOD_API int luaopen_bit32 (lua_State *L) {
luaL_newlib(L, bitlib);
return 1;
}

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@ -0,0 +1,881 @@
/*
** $Id: lcode.c,v 2.62.1.1 2013/04/12 18:48:47 roberto Exp $
** Code generator for Lua
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#define lcode_c
#define LUA_CORE
#include "lua.h"
#include "lcode.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "llex.h"
#include "lmem.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
#include "lstring.h"
#include "ltable.h"
#include "lvm.h"
#define hasjumps(e) ((e)->t != (e)->f)
static int isnumeral(expdesc *e) {
return (e->k == VKNUM && e->t == NO_JUMP && e->f == NO_JUMP);
}
void luaK_nil (FuncState *fs, int from, int n) {
Instruction *previous;
int l = from + n - 1; /* last register to set nil */
if (fs->pc > fs->lasttarget) { /* no jumps to current position? */
previous = &fs->f->code[fs->pc-1];
if (GET_OPCODE(*previous) == OP_LOADNIL) {
int pfrom = GETARG_A(*previous);
int pl = pfrom + GETARG_B(*previous);
if ((pfrom <= from && from <= pl + 1) ||
(from <= pfrom && pfrom <= l + 1)) { /* can connect both? */
if (pfrom < from) from = pfrom; /* from = min(from, pfrom) */
if (pl > l) l = pl; /* l = max(l, pl) */
SETARG_A(*previous, from);
SETARG_B(*previous, l - from);
return;
}
} /* else go through */
}
luaK_codeABC(fs, OP_LOADNIL, from, n - 1, 0); /* else no optimization */
}
int luaK_jump (FuncState *fs) {
int jpc = fs->jpc; /* save list of jumps to here */
int j;
fs->jpc = NO_JUMP;
j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP);
luaK_concat(fs, &j, jpc); /* keep them on hold */
return j;
}
void luaK_ret (FuncState *fs, int first, int nret) {
luaK_codeABC(fs, OP_RETURN, first, nret+1, 0);
}
static int condjump (FuncState *fs, OpCode op, int A, int B, int C) {
luaK_codeABC(fs, op, A, B, C);
return luaK_jump(fs);
}
static void fixjump (FuncState *fs, int pc, int dest) {
Instruction *jmp = &fs->f->code[pc];
int offset = dest-(pc+1);
lua_assert(dest != NO_JUMP);
if (abs(offset) > MAXARG_sBx)
luaX_syntaxerror(fs->ls, "control structure too long");
SETARG_sBx(*jmp, offset);
}
/*
** returns current `pc' and marks it as a jump target (to avoid wrong
** optimizations with consecutive instructions not in the same basic block).
*/
int luaK_getlabel (FuncState *fs) {
fs->lasttarget = fs->pc;
return fs->pc;
}
static int getjump (FuncState *fs, int pc) {
int offset = GETARG_sBx(fs->f->code[pc]);
if (offset == NO_JUMP) /* point to itself represents end of list */
return NO_JUMP; /* end of list */
else
return (pc+1)+offset; /* turn offset into absolute position */
}
static Instruction *getjumpcontrol (FuncState *fs, int pc) {
Instruction *pi = &fs->f->code[pc];
if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1))))
return pi-1;
else
return pi;
}
/*
** check whether list has any jump that do not produce a value
** (or produce an inverted value)
*/
static int need_value (FuncState *fs, int list) {
for (; list != NO_JUMP; list = getjump(fs, list)) {
Instruction i = *getjumpcontrol(fs, list);
if (GET_OPCODE(i) != OP_TESTSET) return 1;
}
return 0; /* not found */
}
static int patchtestreg (FuncState *fs, int node, int reg) {
Instruction *i = getjumpcontrol(fs, node);
if (GET_OPCODE(*i) != OP_TESTSET)
return 0; /* cannot patch other instructions */
if (reg != NO_REG && reg != GETARG_B(*i))
SETARG_A(*i, reg);
else /* no register to put value or register already has the value */
*i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i));
return 1;
}
static void removevalues (FuncState *fs, int list) {
for (; list != NO_JUMP; list = getjump(fs, list))
patchtestreg(fs, list, NO_REG);
}
static void patchlistaux (FuncState *fs, int list, int vtarget, int reg,
int dtarget) {
while (list != NO_JUMP) {
int next = getjump(fs, list);
if (patchtestreg(fs, list, reg))
fixjump(fs, list, vtarget);
else
fixjump(fs, list, dtarget); /* jump to default target */
list = next;
}
}
static void dischargejpc (FuncState *fs) {
patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc);
fs->jpc = NO_JUMP;
}
void luaK_patchlist (FuncState *fs, int list, int target) {
if (target == fs->pc)
luaK_patchtohere(fs, list);
else {
lua_assert(target < fs->pc);
patchlistaux(fs, list, target, NO_REG, target);
}
}
LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level) {
level++; /* argument is +1 to reserve 0 as non-op */
while (list != NO_JUMP) {
int next = getjump(fs, list);
lua_assert(GET_OPCODE(fs->f->code[list]) == OP_JMP &&
(GETARG_A(fs->f->code[list]) == 0 ||
GETARG_A(fs->f->code[list]) >= level));
SETARG_A(fs->f->code[list], level);
list = next;
}
}
void luaK_patchtohere (FuncState *fs, int list) {
luaK_getlabel(fs);
luaK_concat(fs, &fs->jpc, list);
}
void luaK_concat (FuncState *fs, int *l1, int l2) {
if (l2 == NO_JUMP) return;
else if (*l1 == NO_JUMP)
*l1 = l2;
else {
int list = *l1;
int next;
while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */
list = next;
fixjump(fs, list, l2);
}
}
static int luaK_code (FuncState *fs, Instruction i) {
Proto *f = fs->f;
dischargejpc(fs); /* `pc' will change */
/* put new instruction in code array */
luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction,
MAX_INT, "opcodes");
f->code[fs->pc] = i;
/* save corresponding line information */
luaM_growvector(fs->ls->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
MAX_INT, "opcodes");
f->lineinfo[fs->pc] = fs->ls->lastline;
return fs->pc++;
}
int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
lua_assert(getOpMode(o) == iABC);
lua_assert(getBMode(o) != OpArgN || b == 0);
lua_assert(getCMode(o) != OpArgN || c == 0);
lua_assert(a <= MAXARG_A && b <= MAXARG_B && c <= MAXARG_C);
return luaK_code(fs, CREATE_ABC(o, a, b, c));
}
int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
lua_assert(getCMode(o) == OpArgN);
lua_assert(a <= MAXARG_A && bc <= MAXARG_Bx);
return luaK_code(fs, CREATE_ABx(o, a, bc));
}
static int codeextraarg (FuncState *fs, int a) {
lua_assert(a <= MAXARG_Ax);
return luaK_code(fs, CREATE_Ax(OP_EXTRAARG, a));
}
int luaK_codek (FuncState *fs, int reg, int k) {
if (k <= MAXARG_Bx)
return luaK_codeABx(fs, OP_LOADK, reg, k);
else {
int p = luaK_codeABx(fs, OP_LOADKX, reg, 0);
codeextraarg(fs, k);
return p;
}
}
void luaK_checkstack (FuncState *fs, int n) {
int newstack = fs->freereg + n;
if (newstack > fs->f->maxstacksize) {
if (newstack >= MAXSTACK)
luaX_syntaxerror(fs->ls, "function or expression too complex");
fs->f->maxstacksize = cast_byte(newstack);
}
}
void luaK_reserveregs (FuncState *fs, int n) {
luaK_checkstack(fs, n);
fs->freereg += (lu_byte)n;
}
static void freereg (FuncState *fs, int reg) {
if (!ISK(reg) && reg >= fs->nactvar) {
fs->freereg--;
lua_assert(reg == fs->freereg);
}
}
static void freeexp (FuncState *fs, expdesc *e) {
if (e->k == VNONRELOC)
freereg(fs, e->u.info);
}
static int addk (FuncState *fs, TValue *key, TValue *v) {
lua_State *L = fs->ls->L;
TValue *idx = luaH_set(L, fs->h, key);
Proto *f = fs->f;
int k, oldsize;
if (ttisnumber(idx)) {
lua_Number n = nvalue(idx);
lua_number2int(k, n);
if (luaV_rawequalobj(&f->k[k], v))
return k;
/* else may be a collision (e.g., between 0.0 and "\0\0\0\0\0\0\0\0");
go through and create a new entry for this value */
}
/* constant not found; create a new entry */
oldsize = f->sizek;
k = fs->nk;
/* numerical value does not need GC barrier;
table has no metatable, so it does not need to invalidate cache */
setnvalue(idx, cast_num(k));
luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Ax, "constants");
while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
setobj(L, &f->k[k], v);
fs->nk++;
luaC_barrier(L, f, v);
return k;
}
int luaK_stringK (FuncState *fs, TString *s) {
TValue o;
setsvalue(fs->ls->L, &o, s);
return addk(fs, &o, &o);
}
int luaK_numberK (FuncState *fs, lua_Number r) {
int n;
lua_State *L = fs->ls->L;
TValue o;
setnvalue(&o, r);
if (r == 0 || luai_numisnan(NULL, r)) { /* handle -0 and NaN */
/* use raw representation as key to avoid numeric problems */
setsvalue(L, L->top++, luaS_newlstr(L, (char *)&r, sizeof(r)));
n = addk(fs, L->top - 1, &o);
L->top--;
}
else
n = addk(fs, &o, &o); /* regular case */
return n;
}
static int boolK (FuncState *fs, int b) {
TValue o;
setbvalue(&o, b);
return addk(fs, &o, &o);
}
static int nilK (FuncState *fs) {
TValue k, v;
setnilvalue(&v);
/* cannot use nil as key; instead use table itself to represent nil */
sethvalue(fs->ls->L, &k, fs->h);
return addk(fs, &k, &v);
}
void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
if (e->k == VCALL) { /* expression is an open function call? */
SETARG_C(getcode(fs, e), nresults+1);
}
else if (e->k == VVARARG) {
SETARG_B(getcode(fs, e), nresults+1);
SETARG_A(getcode(fs, e), fs->freereg);
luaK_reserveregs(fs, 1);
}
}
void luaK_setoneret (FuncState *fs, expdesc *e) {
if (e->k == VCALL) { /* expression is an open function call? */
e->k = VNONRELOC;
e->u.info = GETARG_A(getcode(fs, e));
}
else if (e->k == VVARARG) {
SETARG_B(getcode(fs, e), 2);
e->k = VRELOCABLE; /* can relocate its simple result */
}
}
void luaK_dischargevars (FuncState *fs, expdesc *e) {
switch (e->k) {
case VLOCAL: {
e->k = VNONRELOC;
break;
}
case VUPVAL: {
e->u.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.info, 0);
e->k = VRELOCABLE;
break;
}
case VINDEXED: {
OpCode op = OP_GETTABUP; /* assume 't' is in an upvalue */
freereg(fs, e->u.ind.idx);
if (e->u.ind.vt == VLOCAL) { /* 't' is in a register? */
freereg(fs, e->u.ind.t);
op = OP_GETTABLE;
}
e->u.info = luaK_codeABC(fs, op, 0, e->u.ind.t, e->u.ind.idx);
e->k = VRELOCABLE;
break;
}
case VVARARG:
case VCALL: {
luaK_setoneret(fs, e);
break;
}
default: break; /* there is one value available (somewhere) */
}
}
static int code_label (FuncState *fs, int A, int b, int jump) {
luaK_getlabel(fs); /* those instructions may be jump targets */
return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump);
}
static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
luaK_dischargevars(fs, e);
switch (e->k) {
case VNIL: {
luaK_nil(fs, reg, 1);
break;
}
case VFALSE: case VTRUE: {
luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
break;
}
case VK: {
luaK_codek(fs, reg, e->u.info);
break;
}
case VKNUM: {
luaK_codek(fs, reg, luaK_numberK(fs, e->u.nval));
break;
}
case VRELOCABLE: {
Instruction *pc = &getcode(fs, e);
SETARG_A(*pc, reg);
break;
}
case VNONRELOC: {
if (reg != e->u.info)
luaK_codeABC(fs, OP_MOVE, reg, e->u.info, 0);
break;
}
default: {
lua_assert(e->k == VVOID || e->k == VJMP);
return; /* nothing to do... */
}
}
e->u.info = reg;
e->k = VNONRELOC;
}
static void discharge2anyreg (FuncState *fs, expdesc *e) {
if (e->k != VNONRELOC) {
luaK_reserveregs(fs, 1);
discharge2reg(fs, e, fs->freereg-1);
}
}
static void exp2reg (FuncState *fs, expdesc *e, int reg) {
discharge2reg(fs, e, reg);
if (e->k == VJMP)
luaK_concat(fs, &e->t, e->u.info); /* put this jump in `t' list */
if (hasjumps(e)) {
int final; /* position after whole expression */
int p_f = NO_JUMP; /* position of an eventual LOAD false */
int p_t = NO_JUMP; /* position of an eventual LOAD true */
if (need_value(fs, e->t) || need_value(fs, e->f)) {
int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs);
p_f = code_label(fs, reg, 0, 1);
p_t = code_label(fs, reg, 1, 0);
luaK_patchtohere(fs, fj);
}
final = luaK_getlabel(fs);
patchlistaux(fs, e->f, final, reg, p_f);
patchlistaux(fs, e->t, final, reg, p_t);
}
e->f = e->t = NO_JUMP;
e->u.info = reg;
e->k = VNONRELOC;
}
void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
freeexp(fs, e);
luaK_reserveregs(fs, 1);
exp2reg(fs, e, fs->freereg - 1);
}
int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
if (e->k == VNONRELOC) {
if (!hasjumps(e)) return e->u.info; /* exp is already in a register */
if (e->u.info >= fs->nactvar) { /* reg. is not a local? */
exp2reg(fs, e, e->u.info); /* put value on it */
return e->u.info;
}
}
luaK_exp2nextreg(fs, e); /* default */
return e->u.info;
}
void luaK_exp2anyregup (FuncState *fs, expdesc *e) {
if (e->k != VUPVAL || hasjumps(e))
luaK_exp2anyreg(fs, e);
}
void luaK_exp2val (FuncState *fs, expdesc *e) {
if (hasjumps(e))
luaK_exp2anyreg(fs, e);
else
luaK_dischargevars(fs, e);
}
int luaK_exp2RK (FuncState *fs, expdesc *e) {
luaK_exp2val(fs, e);
switch (e->k) {
case VTRUE:
case VFALSE:
case VNIL: {
if (fs->nk <= MAXINDEXRK) { /* constant fits in RK operand? */
e->u.info = (e->k == VNIL) ? nilK(fs) : boolK(fs, (e->k == VTRUE));
e->k = VK;
return RKASK(e->u.info);
}
else break;
}
case VKNUM: {
e->u.info = luaK_numberK(fs, e->u.nval);
e->k = VK;
/* go through */
}
case VK: {
if (e->u.info <= MAXINDEXRK) /* constant fits in argC? */
return RKASK(e->u.info);
else break;
}
default: break;
}
/* not a constant in the right range: put it in a register */
return luaK_exp2anyreg(fs, e);
}
void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) {
switch (var->k) {
case VLOCAL: {
freeexp(fs, ex);
exp2reg(fs, ex, var->u.info);
return;
}
case VUPVAL: {
int e = luaK_exp2anyreg(fs, ex);
luaK_codeABC(fs, OP_SETUPVAL, e, var->u.info, 0);
break;
}
case VINDEXED: {
OpCode op = (var->u.ind.vt == VLOCAL) ? OP_SETTABLE : OP_SETTABUP;
int e = luaK_exp2RK(fs, ex);
luaK_codeABC(fs, op, var->u.ind.t, var->u.ind.idx, e);
break;
}
default: {
lua_assert(0); /* invalid var kind to store */
break;
}
}
freeexp(fs, ex);
}
void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
int ereg;
luaK_exp2anyreg(fs, e);
ereg = e->u.info; /* register where 'e' was placed */
freeexp(fs, e);
e->u.info = fs->freereg; /* base register for op_self */
e->k = VNONRELOC;
luaK_reserveregs(fs, 2); /* function and 'self' produced by op_self */
luaK_codeABC(fs, OP_SELF, e->u.info, ereg, luaK_exp2RK(fs, key));
freeexp(fs, key);
}
static void invertjump (FuncState *fs, expdesc *e) {
Instruction *pc = getjumpcontrol(fs, e->u.info);
lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET &&
GET_OPCODE(*pc) != OP_TEST);
SETARG_A(*pc, !(GETARG_A(*pc)));
}
static int jumponcond (FuncState *fs, expdesc *e, int cond) {
if (e->k == VRELOCABLE) {
Instruction ie = getcode(fs, e);
if (GET_OPCODE(ie) == OP_NOT) {
fs->pc--; /* remove previous OP_NOT */
return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond);
}
/* else go through */
}
discharge2anyreg(fs, e);
freeexp(fs, e);
return condjump(fs, OP_TESTSET, NO_REG, e->u.info, cond);
}
void luaK_goiftrue (FuncState *fs, expdesc *e) {
int pc; /* pc of last jump */
luaK_dischargevars(fs, e);
switch (e->k) {
case VJMP: {
invertjump(fs, e);
pc = e->u.info;
break;
}
case VK: case VKNUM: case VTRUE: {
pc = NO_JUMP; /* always true; do nothing */
break;
}
default: {
pc = jumponcond(fs, e, 0);
break;
}
}
luaK_concat(fs, &e->f, pc); /* insert last jump in `f' list */
luaK_patchtohere(fs, e->t);
e->t = NO_JUMP;
}
void luaK_goiffalse (FuncState *fs, expdesc *e) {
int pc; /* pc of last jump */
luaK_dischargevars(fs, e);
switch (e->k) {
case VJMP: {
pc = e->u.info;
break;
}
case VNIL: case VFALSE: {
pc = NO_JUMP; /* always false; do nothing */
break;
}
default: {
pc = jumponcond(fs, e, 1);
break;
}
}
luaK_concat(fs, &e->t, pc); /* insert last jump in `t' list */
luaK_patchtohere(fs, e->f);
e->f = NO_JUMP;
}
static void codenot (FuncState *fs, expdesc *e) {
luaK_dischargevars(fs, e);
switch (e->k) {
case VNIL: case VFALSE: {
e->k = VTRUE;
break;
}
case VK: case VKNUM: case VTRUE: {
e->k = VFALSE;
break;
}
case VJMP: {
invertjump(fs, e);
break;
}
case VRELOCABLE:
case VNONRELOC: {
discharge2anyreg(fs, e);
freeexp(fs, e);
e->u.info = luaK_codeABC(fs, OP_NOT, 0, e->u.info, 0);
e->k = VRELOCABLE;
break;
}
default: {
lua_assert(0); /* cannot happen */
break;
}
}
/* interchange true and false lists */
{ int temp = e->f; e->f = e->t; e->t = temp; }
removevalues(fs, e->f);
removevalues(fs, e->t);
}
void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
lua_assert(!hasjumps(t));
t->u.ind.t = (lu_byte)t->u.info;
t->u.ind.idx = (short)luaK_exp2RK(fs, k);
t->u.ind.vt = (t->k == VUPVAL) ? VUPVAL
: check_exp(vkisinreg(t->k), VLOCAL);
t->k = VINDEXED;
}
static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
lua_Number r;
if (!isnumeral(e1) || !isnumeral(e2)) return 0;
if ((op == OP_DIV || op == OP_MOD) && e2->u.nval == 0)
return 0; /* do not attempt to divide by 0 */
r = luaO_arith(op - OP_ADD + LUA_OPADD, e1->u.nval, e2->u.nval);
e1->u.nval = r;
return 1;
}
static void codearith (FuncState *fs, OpCode op,
expdesc *e1, expdesc *e2, int line) {
if (constfolding(op, e1, e2))
return;
else {
int o2 = (op != OP_UNM && op != OP_LEN) ? luaK_exp2RK(fs, e2) : 0;
int o1 = luaK_exp2RK(fs, e1);
if (o1 > o2) {
freeexp(fs, e1);
freeexp(fs, e2);
}
else {
freeexp(fs, e2);
freeexp(fs, e1);
}
e1->u.info = luaK_codeABC(fs, op, 0, o1, o2);
e1->k = VRELOCABLE;
luaK_fixline(fs, line);
}
}
static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1,
expdesc *e2) {
int o1 = luaK_exp2RK(fs, e1);
int o2 = luaK_exp2RK(fs, e2);
freeexp(fs, e2);
freeexp(fs, e1);
if (cond == 0 && op != OP_EQ) {
int temp; /* exchange args to replace by `<' or `<=' */
temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */
cond = 1;
}
e1->u.info = condjump(fs, op, cond, o1, o2);
e1->k = VJMP;
}
void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) {
expdesc e2;
e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;
switch (op) {
case OPR_MINUS: {
if (isnumeral(e)) /* minus constant? */
e->u.nval = luai_numunm(NULL, e->u.nval); /* fold it */
else {
luaK_exp2anyreg(fs, e);
codearith(fs, OP_UNM, e, &e2, line);
}
break;
}
case OPR_NOT: codenot(fs, e); break;
case OPR_LEN: {
luaK_exp2anyreg(fs, e); /* cannot operate on constants */
codearith(fs, OP_LEN, e, &e2, line);
break;
}
default: lua_assert(0);
}
}
void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
switch (op) {
case OPR_AND: {
luaK_goiftrue(fs, v);
break;
}
case OPR_OR: {
luaK_goiffalse(fs, v);
break;
}
case OPR_CONCAT: {
luaK_exp2nextreg(fs, v); /* operand must be on the `stack' */
break;
}
case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV:
case OPR_MOD: case OPR_POW: {
if (!isnumeral(v)) luaK_exp2RK(fs, v);
break;
}
default: {
luaK_exp2RK(fs, v);
break;
}
}
}
void luaK_posfix (FuncState *fs, BinOpr op,
expdesc *e1, expdesc *e2, int line) {
switch (op) {
case OPR_AND: {
lua_assert(e1->t == NO_JUMP); /* list must be closed */
luaK_dischargevars(fs, e2);
luaK_concat(fs, &e2->f, e1->f);
*e1 = *e2;
break;
}
case OPR_OR: {
lua_assert(e1->f == NO_JUMP); /* list must be closed */
luaK_dischargevars(fs, e2);
luaK_concat(fs, &e2->t, e1->t);
*e1 = *e2;
break;
}
case OPR_CONCAT: {
luaK_exp2val(fs, e2);
if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
lua_assert(e1->u.info == GETARG_B(getcode(fs, e2))-1);
freeexp(fs, e1);
SETARG_B(getcode(fs, e2), e1->u.info);
e1->k = VRELOCABLE; e1->u.info = e2->u.info;
}
else {
luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */
codearith(fs, OP_CONCAT, e1, e2, line);
}
break;
}
case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV:
case OPR_MOD: case OPR_POW: {
codearith(fs, cast(OpCode, op - OPR_ADD + OP_ADD), e1, e2, line);
break;
}
case OPR_EQ: case OPR_LT: case OPR_LE: {
codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2);
break;
}
case OPR_NE: case OPR_GT: case OPR_GE: {
codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2);
break;
}
default: lua_assert(0);
}
}
void luaK_fixline (FuncState *fs, int line) {
fs->f->lineinfo[fs->pc - 1] = line;
}
void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) {
int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1;
int b = (tostore == LUA_MULTRET) ? 0 : tostore;
lua_assert(tostore != 0);
if (c <= MAXARG_C)
luaK_codeABC(fs, OP_SETLIST, base, b, c);
else if (c <= MAXARG_Ax) {
luaK_codeABC(fs, OP_SETLIST, base, b, 0);
codeextraarg(fs, c);
}
else
luaX_syntaxerror(fs->ls, "constructor too long");
fs->freereg = (lu_byte)base + 1; /* free registers with list values */
}

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@ -0,0 +1,83 @@
/*
** $Id: lcode.h,v 1.58.1.1 2013/04/12 18:48:47 roberto Exp $
** Code generator for Lua
** See Copyright Notice in lua.h
*/
#ifndef lcode_h
#define lcode_h
#include "llex.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
/*
** Marks the end of a patch list. It is an invalid value both as an absolute
** address, and as a list link (would link an element to itself).
*/
#define NO_JUMP (-1)
/*
** grep "ORDER OPR" if you change these enums (ORDER OP)
*/
typedef enum BinOpr {
OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW,
OPR_CONCAT,
OPR_EQ, OPR_LT, OPR_LE,
OPR_NE, OPR_GT, OPR_GE,
OPR_AND, OPR_OR,
OPR_NOBINOPR
} BinOpr;
typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
#define getcode(fs,e) ((fs)->f->code[(e)->u.info])
#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET)
#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t)
LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k);
LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r);
LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_jump (FuncState *fs);
LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level);
LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
LUAI_FUNC int luaK_getlabel (FuncState *fs);
LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
expdesc *v2, int line);
LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
#endif

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@ -0,0 +1,155 @@
/*
** $Id: lcorolib.c,v 1.5.1.1 2013/04/12 18:48:47 roberto Exp $
** Coroutine Library
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#define lcorolib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
static int auxresume (lua_State *L, lua_State *co, int narg) {
int status;
if (!lua_checkstack(co, narg)) {
lua_pushliteral(L, "too many arguments to resume");
return -1; /* error flag */
}
if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) {
lua_pushliteral(L, "cannot resume dead coroutine");
return -1; /* error flag */
}
lua_xmove(L, co, narg);
status = lua_resume(co, L, narg);
if (status == LUA_OK || status == LUA_YIELD) {
int nres = lua_gettop(co);
if (!lua_checkstack(L, nres + 1)) {
lua_pop(co, nres); /* remove results anyway */
lua_pushliteral(L, "too many results to resume");
return -1; /* error flag */
}
lua_xmove(co, L, nres); /* move yielded values */
return nres;
}
else {
lua_xmove(co, L, 1); /* move error message */
return -1; /* error flag */
}
}
static int luaB_coresume (lua_State *L) {
lua_State *co = lua_tothread(L, 1);
int r;
luaL_argcheck(L, co, 1, "coroutine expected");
r = auxresume(L, co, lua_gettop(L) - 1);
if (r < 0) {
lua_pushboolean(L, 0);
lua_insert(L, -2);
return 2; /* return false + error message */
}
else {
lua_pushboolean(L, 1);
lua_insert(L, -(r + 1));
return r + 1; /* return true + `resume' returns */
}
}
static int luaB_auxwrap (lua_State *L) {
lua_State *co = lua_tothread(L, lua_upvalueindex(1));
int r = auxresume(L, co, lua_gettop(L));
if (r < 0) {
if (lua_isstring(L, -1)) { /* error object is a string? */
luaL_where(L, 1); /* add extra info */
lua_insert(L, -2);
lua_concat(L, 2);
}
return lua_error(L); /* propagate error */
}
return r;
}
static int luaB_cocreate (lua_State *L) {
lua_State *NL;
luaL_checktype(L, 1, LUA_TFUNCTION);
NL = lua_newthread(L);
lua_pushvalue(L, 1); /* move function to top */
lua_xmove(L, NL, 1); /* move function from L to NL */
return 1;
}
static int luaB_cowrap (lua_State *L) {
luaB_cocreate(L);
lua_pushcclosure(L, luaB_auxwrap, 1);
return 1;
}
static int luaB_yield (lua_State *L) {
return lua_yield(L, lua_gettop(L));
}
static int luaB_costatus (lua_State *L) {
lua_State *co = lua_tothread(L, 1);
luaL_argcheck(L, co, 1, "coroutine expected");
if (L == co) lua_pushliteral(L, "running");
else {
switch (lua_status(co)) {
case LUA_YIELD:
lua_pushliteral(L, "suspended");
break;
case LUA_OK: {
lua_Debug ar;
if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */
lua_pushliteral(L, "normal"); /* it is running */
else if (lua_gettop(co) == 0)
lua_pushliteral(L, "dead");
else
lua_pushliteral(L, "suspended"); /* initial state */
break;
}
default: /* some error occurred */
lua_pushliteral(L, "dead");
break;
}
}
return 1;
}
static int luaB_corunning (lua_State *L) {
int ismain = lua_pushthread(L);
lua_pushboolean(L, ismain);
return 2;
}
static const luaL_Reg co_funcs[] = {
{"create", luaB_cocreate},
{"resume", luaB_coresume},
{"running", luaB_corunning},
{"status", luaB_costatus},
{"wrap", luaB_cowrap},
{"yield", luaB_yield},
{NULL, NULL}
};
LUAMOD_API int luaopen_coroutine (lua_State *L) {
luaL_newlib(L, co_funcs);
return 1;
}

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/*
** $Id: lctype.c,v 1.11.1.1 2013/04/12 18:48:47 roberto Exp $
** 'ctype' functions for Lua
** See Copyright Notice in lua.h
*/
#define lctype_c
#define LUA_CORE
#include "lctype.h"
#if !LUA_USE_CTYPE /* { */
#include <limits.h>
LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
0x00, /* EOZ */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */
0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0c, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, /* 2. */
0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, 0x16, /* 3. */
0x16, 0x16, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 4. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 5. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x05,
0x04, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x05, /* 6. */
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
#endif /* } */

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/*
** $Id: lctype.h,v 1.12.1.1 2013/04/12 18:48:47 roberto Exp $
** 'ctype' functions for Lua
** See Copyright Notice in lua.h
*/
#ifndef lctype_h
#define lctype_h
#include "lua.h"
/*
** WARNING: the functions defined here do not necessarily correspond
** to the similar functions in the standard C ctype.h. They are
** optimized for the specific needs of Lua
*/
#if !defined(LUA_USE_CTYPE)
#if 'A' == 65 && '0' == 48
/* ASCII case: can use its own tables; faster and fixed */
#define LUA_USE_CTYPE 0
#else
/* must use standard C ctype */
#define LUA_USE_CTYPE 1
#endif
#endif
#if !LUA_USE_CTYPE /* { */
#include <limits.h>
#include "llimits.h"
#define ALPHABIT 0
#define DIGITBIT 1
#define PRINTBIT 2
#define SPACEBIT 3
#define XDIGITBIT 4
#define MASK(B) (1 << (B))
/*
** add 1 to char to allow index -1 (EOZ)
*/
#define testprop(c,p) (luai_ctype_[(c)+1] & (p))
/*
** 'lalpha' (Lua alphabetic) and 'lalnum' (Lua alphanumeric) both include '_'
*/
#define lislalpha(c) testprop(c, MASK(ALPHABIT))
#define lislalnum(c) testprop(c, (MASK(ALPHABIT) | MASK(DIGITBIT)))
#define lisdigit(c) testprop(c, MASK(DIGITBIT))
#define lisspace(c) testprop(c, MASK(SPACEBIT))
#define lisprint(c) testprop(c, MASK(PRINTBIT))
#define lisxdigit(c) testprop(c, MASK(XDIGITBIT))
/*
** this 'ltolower' only works for alphabetic characters
*/
#define ltolower(c) ((c) | ('A' ^ 'a'))
/* two more entries for 0 and -1 (EOZ) */
LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2];
#else /* }{ */
/*
** use standard C ctypes
*/
#include <ctype.h>
#define lislalpha(c) (isalpha(c) || (c) == '_')
#define lislalnum(c) (isalnum(c) || (c) == '_')
#define lisdigit(c) (isdigit(c))
#define lisspace(c) (isspace(c))
#define lisprint(c) (isprint(c))
#define lisxdigit(c) (isxdigit(c))
#define ltolower(c) (tolower(c))
#endif /* } */
#endif

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/*
** $Id: ldblib.c,v 1.132.1.1 2013/04/12 18:48:47 roberto Exp $
** Interface from Lua to its debug API
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define ldblib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#define HOOKKEY "_HKEY"
static int db_getregistry (lua_State *L) {
lua_pushvalue(L, LUA_REGISTRYINDEX);
return 1;
}
static int db_getmetatable (lua_State *L) {
luaL_checkany(L, 1);
if (!lua_getmetatable(L, 1)) {
lua_pushnil(L); /* no metatable */
}
return 1;
}
static int db_setmetatable (lua_State *L) {
int t = lua_type(L, 2);
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
"nil or table expected");
lua_settop(L, 2);
lua_setmetatable(L, 1);
return 1; /* return 1st argument */
}
static int db_getuservalue (lua_State *L) {
if (lua_type(L, 1) != LUA_TUSERDATA)
lua_pushnil(L);
else
lua_getuservalue(L, 1);
return 1;
}
static int db_setuservalue (lua_State *L) {
if (lua_type(L, 1) == LUA_TLIGHTUSERDATA)
luaL_argerror(L, 1, "full userdata expected, got light userdata");
luaL_checktype(L, 1, LUA_TUSERDATA);
if (!lua_isnoneornil(L, 2))
luaL_checktype(L, 2, LUA_TTABLE);
lua_settop(L, 2);
lua_setuservalue(L, 1);
return 1;
}
static void settabss (lua_State *L, const char *i, const char *v) {
lua_pushstring(L, v);
lua_setfield(L, -2, i);
}
static void settabsi (lua_State *L, const char *i, int v) {
lua_pushinteger(L, v);
lua_setfield(L, -2, i);
}
static void settabsb (lua_State *L, const char *i, int v) {
lua_pushboolean(L, v);
lua_setfield(L, -2, i);
}
static lua_State *getthread (lua_State *L, int *arg) {
if (lua_isthread(L, 1)) {
*arg = 1;
return lua_tothread(L, 1);
}
else {
*arg = 0;
return L;
}
}
static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
if (L == L1) {
lua_pushvalue(L, -2);
lua_remove(L, -3);
}
else
lua_xmove(L1, L, 1);
lua_setfield(L, -2, fname);
}
static int db_getinfo (lua_State *L) {
lua_Debug ar;
int arg;
lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg+2, "flnStu");
if (lua_isnumber(L, arg+1)) {
if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
lua_pushnil(L); /* level out of range */
return 1;
}
}
else if (lua_isfunction(L, arg+1)) {
lua_pushfstring(L, ">%s", options);
options = lua_tostring(L, -1);
lua_pushvalue(L, arg+1);
lua_xmove(L, L1, 1);
}
else
return luaL_argerror(L, arg+1, "function or level expected");
if (!lua_getinfo(L1, options, &ar))
return luaL_argerror(L, arg+2, "invalid option");
lua_createtable(L, 0, 2);
if (strchr(options, 'S')) {
settabss(L, "source", ar.source);
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined);
settabss(L, "what", ar.what);
}
if (strchr(options, 'l'))
settabsi(L, "currentline", ar.currentline);
if (strchr(options, 'u')) {
settabsi(L, "nups", ar.nups);
settabsi(L, "nparams", ar.nparams);
settabsb(L, "isvararg", ar.isvararg);
}
if (strchr(options, 'n')) {
settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat);
}
if (strchr(options, 't'))
settabsb(L, "istailcall", ar.istailcall);
if (strchr(options, 'L'))
treatstackoption(L, L1, "activelines");
if (strchr(options, 'f'))
treatstackoption(L, L1, "func");
return 1; /* return table */
}
static int db_getlocal (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
const char *name;
int nvar = luaL_checkint(L, arg+2); /* local-variable index */
if (lua_isfunction(L, arg + 1)) { /* function argument? */
lua_pushvalue(L, arg + 1); /* push function */
lua_pushstring(L, lua_getlocal(L, NULL, nvar)); /* push local name */
return 1;
}
else { /* stack-level argument */
if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
name = lua_getlocal(L1, &ar, nvar);
if (name) {
lua_xmove(L1, L, 1); /* push local value */
lua_pushstring(L, name); /* push name */
lua_pushvalue(L, -2); /* re-order */
return 2;
}
else {
lua_pushnil(L); /* no name (nor value) */
return 1;
}
}
}
static int db_setlocal (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range");
luaL_checkany(L, arg+3);
lua_settop(L, arg+3);
lua_xmove(L, L1, 1);
lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
return 1;
}
static int auxupvalue (lua_State *L, int get) {
const char *name;
int n = luaL_checkint(L, 2);
luaL_checktype(L, 1, LUA_TFUNCTION);
name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
if (name == NULL) return 0;
lua_pushstring(L, name);
lua_insert(L, -(get+1));
return get + 1;
}
static int db_getupvalue (lua_State *L) {
return auxupvalue(L, 1);
}
static int db_setupvalue (lua_State *L) {
luaL_checkany(L, 3);
return auxupvalue(L, 0);
}
static int checkupval (lua_State *L, int argf, int argnup) {
lua_Debug ar;
int nup = luaL_checkint(L, argnup);
luaL_checktype(L, argf, LUA_TFUNCTION);
lua_pushvalue(L, argf);
lua_getinfo(L, ">u", &ar);
luaL_argcheck(L, 1 <= nup && nup <= ar.nups, argnup, "invalid upvalue index");
return nup;
}
static int db_upvalueid (lua_State *L) {
int n = checkupval(L, 1, 2);
lua_pushlightuserdata(L, lua_upvalueid(L, 1, n));
return 1;
}
static int db_upvaluejoin (lua_State *L) {
int n1 = checkupval(L, 1, 2);
int n2 = checkupval(L, 3, 4);
luaL_argcheck(L, !lua_iscfunction(L, 1), 1, "Lua function expected");
luaL_argcheck(L, !lua_iscfunction(L, 3), 3, "Lua function expected");
lua_upvaluejoin(L, 1, n1, 3, n2);
return 0;
}
#define gethooktable(L) luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)
static void hookf (lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] =
{"call", "return", "line", "count", "tail call"};
gethooktable(L);
lua_pushthread(L);
lua_rawget(L, -2);
if (lua_isfunction(L, -1)) {
lua_pushstring(L, hooknames[(int)ar->event]);
if (ar->currentline >= 0)
lua_pushinteger(L, ar->currentline);
else lua_pushnil(L);
lua_assert(lua_getinfo(L, "lS", ar));
lua_call(L, 2, 0);
}
}
static int makemask (const char *smask, int count) {
int mask = 0;
if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
if (strchr(smask, 'r')) mask |= LUA_MASKRET;
if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
if (count > 0) mask |= LUA_MASKCOUNT;
return mask;
}
static char *unmakemask (int mask, char *smask) {
int i = 0;
if (mask & LUA_MASKCALL) smask[i++] = 'c';
if (mask & LUA_MASKRET) smask[i++] = 'r';
if (mask & LUA_MASKLINE) smask[i++] = 'l';
smask[i] = '\0';
return smask;
}
static int db_sethook (lua_State *L) {
int arg, mask, count;
lua_Hook func;
lua_State *L1 = getthread(L, &arg);
if (lua_isnoneornil(L, arg+1)) {
lua_settop(L, arg+1);
func = NULL; mask = 0; count = 0; /* turn off hooks */
}
else {
const char *smask = luaL_checkstring(L, arg+2);
luaL_checktype(L, arg+1, LUA_TFUNCTION);
count = luaL_optint(L, arg+3, 0);
func = hookf; mask = makemask(smask, count);
}
if (gethooktable(L) == 0) { /* creating hook table? */
lua_pushstring(L, "k");
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
lua_pushvalue(L, -1);
lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */
}
lua_pushthread(L1); lua_xmove(L1, L, 1);
lua_pushvalue(L, arg+1);
lua_rawset(L, -3); /* set new hook */
lua_sethook(L1, func, mask, count); /* set hooks */
return 0;
}
static int db_gethook (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
char buff[5];
int mask = lua_gethookmask(L1);
lua_Hook hook = lua_gethook(L1);
if (hook != NULL && hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else {
gethooktable(L);
lua_pushthread(L1); lua_xmove(L1, L, 1);
lua_rawget(L, -2); /* get hook */
lua_remove(L, -2); /* remove hook table */
}
lua_pushstring(L, unmakemask(mask, buff));
lua_pushinteger(L, lua_gethookcount(L1));
return 3;
}
static int db_debug (lua_State *L) {
for (;;) {
char buffer[250];
luai_writestringerror("%s", "lua_debug> ");
if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
strcmp(buffer, "cont\n") == 0)
return 0;
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
lua_pcall(L, 0, 0, 0))
luai_writestringerror("%s\n", lua_tostring(L, -1));
lua_settop(L, 0); /* remove eventual returns */
}
}
static int db_traceback (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
const char *msg = lua_tostring(L, arg + 1);
if (msg == NULL && !lua_isnoneornil(L, arg + 1)) /* non-string 'msg'? */
lua_pushvalue(L, arg + 1); /* return it untouched */
else {
int level = luaL_optint(L, arg + 2, (L == L1) ? 1 : 0);
luaL_traceback(L, L1, msg, level);
}
return 1;
}
static const luaL_Reg dblib[] = {
{"debug", db_debug},
{"getuservalue", db_getuservalue},
{"gethook", db_gethook},
{"getinfo", db_getinfo},
{"getlocal", db_getlocal},
{"getregistry", db_getregistry},
{"getmetatable", db_getmetatable},
{"getupvalue", db_getupvalue},
{"upvaluejoin", db_upvaluejoin},
{"upvalueid", db_upvalueid},
{"setuservalue", db_setuservalue},
{"sethook", db_sethook},
{"setlocal", db_setlocal},
{"setmetatable", db_setmetatable},
{"setupvalue", db_setupvalue},
{"traceback", db_traceback},
{NULL, NULL}
};
LUAMOD_API int luaopen_debug (lua_State *L) {
luaL_newlib(L, dblib);
return 1;
}

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/*
** $Id: ldebug.c,v 2.90.1.3 2013/05/16 16:04:15 roberto Exp $
** Debug Interface
** See Copyright Notice in lua.h
*/
#include <stdarg.h>
#include <stddef.h>
#include <string.h>
#define ldebug_c
#define LUA_CORE
#include "lua.h"
#include "lapi.h"
#include "lcode.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL)
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
static int currentpc (CallInfo *ci) {
lua_assert(isLua(ci));
return pcRel(ci->u.l.savedpc, ci_func(ci)->p);
}
static int currentline (CallInfo *ci) {
return getfuncline(ci_func(ci)->p, currentpc(ci));
}
/*
** this function can be called asynchronous (e.g. during a signal)
*/
LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
if (func == NULL || mask == 0) { /* turn off hooks? */
mask = 0;
func = NULL;
}
if (isLua(L->ci))
L->oldpc = L->ci->u.l.savedpc;
L->hook = func;
L->basehookcount = count;
resethookcount(L);
L->hookmask = cast_byte(mask);
return 1;
}
LUA_API lua_Hook lua_gethook (lua_State *L) {
return L->hook;
}
LUA_API int lua_gethookmask (lua_State *L) {
return L->hookmask;
}
LUA_API int lua_gethookcount (lua_State *L) {
return L->basehookcount;
}
LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
int status;
CallInfo *ci;
if (level < 0) return 0; /* invalid (negative) level */
lua_lock(L);
for (ci = L->ci; level > 0 && ci != &L->base_ci; ci = ci->previous)
level--;
if (level == 0 && ci != &L->base_ci) { /* level found? */
status = 1;
ar->i_ci = ci;
}
else status = 0; /* no such level */
lua_unlock(L);
return status;
}
static const char *upvalname (Proto *p, int uv) {
TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name);
if (s == NULL) return "?";
else return getstr(s);
}
static const char *findvararg (CallInfo *ci, int n, StkId *pos) {
int nparams = clLvalue(ci->func)->p->numparams;
if (n >= ci->u.l.base - ci->func - nparams)
return NULL; /* no such vararg */
else {
*pos = ci->func + nparams + n;
return "(*vararg)"; /* generic name for any vararg */
}
}
static const char *findlocal (lua_State *L, CallInfo *ci, int n,
StkId *pos) {
const char *name = NULL;
StkId base;
if (isLua(ci)) {
if (n < 0) /* access to vararg values? */
return findvararg(ci, -n, pos);
else {
base = ci->u.l.base;
name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci));
}
}
else
base = ci->func + 1;
if (name == NULL) { /* no 'standard' name? */
StkId limit = (ci == L->ci) ? L->top : ci->next->func;
if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */
name = "(*temporary)"; /* generic name for any valid slot */
else
return NULL; /* no name */
}
*pos = base + (n - 1);
return name;
}
LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
const char *name;
lua_lock(L);
if (ar == NULL) { /* information about non-active function? */
if (!isLfunction(L->top - 1)) /* not a Lua function? */
name = NULL;
else /* consider live variables at function start (parameters) */
name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0);
}
else { /* active function; get information through 'ar' */
StkId pos = 0; /* to avoid warnings */
name = findlocal(L, ar->i_ci, n, &pos);
if (name) {
setobj2s(L, L->top, pos);
api_incr_top(L);
}
}
lua_unlock(L);
return name;
}
LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
StkId pos = 0; /* to avoid warnings */
const char *name = findlocal(L, ar->i_ci, n, &pos);
lua_lock(L);
if (name)
setobjs2s(L, pos, L->top - 1);
L->top--; /* pop value */
lua_unlock(L);
return name;
}
static void funcinfo (lua_Debug *ar, Closure *cl) {
if (noLuaClosure(cl)) {
ar->source = "=[C]";
ar->linedefined = -1;
ar->lastlinedefined = -1;
ar->what = "C";
}
else {
Proto *p = cl->l.p;
ar->source = p->source ? getstr(p->source) : "=?";
ar->linedefined = p->linedefined;
ar->lastlinedefined = p->lastlinedefined;
ar->what = (ar->linedefined == 0) ? "main" : "Lua";
}
luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
}
static void collectvalidlines (lua_State *L, Closure *f) {
if (noLuaClosure(f)) {
setnilvalue(L->top);
api_incr_top(L);
}
else {
int i;
TValue v;
int *lineinfo = f->l.p->lineinfo;
Table *t = luaH_new(L); /* new table to store active lines */
sethvalue(L, L->top, t); /* push it on stack */
api_incr_top(L);
setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */
for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */
luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */
}
}
static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
Closure *f, CallInfo *ci) {
int status = 1;
for (; *what; what++) {
switch (*what) {
case 'S': {
funcinfo(ar, f);
break;
}
case 'l': {
ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1;
break;
}
case 'u': {
ar->nups = (f == NULL) ? 0 : f->c.nupvalues;
if (noLuaClosure(f)) {
ar->isvararg = 1;
ar->nparams = 0;
}
else {
ar->isvararg = f->l.p->is_vararg;
ar->nparams = f->l.p->numparams;
}
break;
}
case 't': {
ar->istailcall = (ci) ? ci->callstatus & CIST_TAIL : 0;
break;
}
case 'n': {
/* calling function is a known Lua function? */
if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
ar->namewhat = getfuncname(L, ci->previous, &ar->name);
else
ar->namewhat = NULL;
if (ar->namewhat == NULL) {
ar->namewhat = ""; /* not found */
ar->name = NULL;
}
break;
}
case 'L':
case 'f': /* handled by lua_getinfo */
break;
default: status = 0; /* invalid option */
}
}
return status;
}
LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
int status;
Closure *cl;
CallInfo *ci;
StkId func;
lua_lock(L);
if (*what == '>') {
ci = NULL;
func = L->top - 1;
api_check(L, ttisfunction(func), "function expected");
what++; /* skip the '>' */
L->top--; /* pop function */
}
else {
ci = ar->i_ci;
func = ci->func;
lua_assert(ttisfunction(ci->func));
}
cl = ttisclosure(func) ? clvalue(func) : NULL;
status = auxgetinfo(L, what, ar, cl, ci);
if (strchr(what, 'f')) {
setobjs2s(L, L->top, func);
api_incr_top(L);
}
if (strchr(what, 'L'))
collectvalidlines(L, cl);
lua_unlock(L);
return status;
}
/*
** {======================================================
** Symbolic Execution
** =======================================================
*/
static const char *getobjname (Proto *p, int lastpc, int reg,
const char **name);
/*
** find a "name" for the RK value 'c'
*/
static void kname (Proto *p, int pc, int c, const char **name) {
if (ISK(c)) { /* is 'c' a constant? */
TValue *kvalue = &p->k[INDEXK(c)];
if (ttisstring(kvalue)) { /* literal constant? */
*name = svalue(kvalue); /* it is its own name */
return;
}
/* else no reasonable name found */
}
else { /* 'c' is a register */
const char *what = getobjname(p, pc, c, name); /* search for 'c' */
if (what && *what == 'c') { /* found a constant name? */
return; /* 'name' already filled */
}
/* else no reasonable name found */
}
*name = "?"; /* no reasonable name found */
}
static int filterpc (int pc, int jmptarget) {
if (pc < jmptarget) /* is code conditional (inside a jump)? */
return -1; /* cannot know who sets that register */
else return pc; /* current position sets that register */
}
/*
** try to find last instruction before 'lastpc' that modified register 'reg'
*/
static int findsetreg (Proto *p, int lastpc, int reg) {
int pc;
int setreg = -1; /* keep last instruction that changed 'reg' */
int jmptarget = 0; /* any code before this address is conditional */
for (pc = 0; pc < lastpc; pc++) {
Instruction i = p->code[pc];
OpCode op = GET_OPCODE(i);
int a = GETARG_A(i);
switch (op) {
case OP_LOADNIL: {
int b = GETARG_B(i);
if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */
setreg = filterpc(pc, jmptarget);
break;
}
case OP_TFORCALL: {
if (reg >= a + 2) /* affect all regs above its base */
setreg = filterpc(pc, jmptarget);
break;
}
case OP_CALL:
case OP_TAILCALL: {
if (reg >= a) /* affect all registers above base */
setreg = filterpc(pc, jmptarget);
break;
}
case OP_JMP: {
int b = GETARG_sBx(i);
int dest = pc + 1 + b;
/* jump is forward and do not skip `lastpc'? */
if (pc < dest && dest <= lastpc) {
if (dest > jmptarget)
jmptarget = dest; /* update 'jmptarget' */
}
break;
}
case OP_TEST: {
if (reg == a) /* jumped code can change 'a' */
setreg = filterpc(pc, jmptarget);
break;
}
default:
if (testAMode(op) && reg == a) /* any instruction that set A */
setreg = filterpc(pc, jmptarget);
break;
}
}
return setreg;
}
static const char *getobjname (Proto *p, int lastpc, int reg,
const char **name) {
int pc;
*name = luaF_getlocalname(p, reg + 1, lastpc);
if (*name) /* is a local? */
return "local";
/* else try symbolic execution */
pc = findsetreg(p, lastpc, reg);
if (pc != -1) { /* could find instruction? */
Instruction i = p->code[pc];
OpCode op = GET_OPCODE(i);
switch (op) {
case OP_MOVE: {
int b = GETARG_B(i); /* move from 'b' to 'a' */
if (b < GETARG_A(i))
return getobjname(p, pc, b, name); /* get name for 'b' */
break;
}
case OP_GETTABUP:
case OP_GETTABLE: {
int k = GETARG_C(i); /* key index */
int t = GETARG_B(i); /* table index */
const char *vn = (op == OP_GETTABLE) /* name of indexed variable */
? luaF_getlocalname(p, t + 1, pc)
: upvalname(p, t);
kname(p, pc, k, name);
return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field";
}
case OP_GETUPVAL: {
*name = upvalname(p, GETARG_B(i));
return "upvalue";
}
case OP_LOADK:
case OP_LOADKX: {
int b = (op == OP_LOADK) ? GETARG_Bx(i)
: GETARG_Ax(p->code[pc + 1]);
if (ttisstring(&p->k[b])) {
*name = svalue(&p->k[b]);
return "constant";
}
break;
}
case OP_SELF: {
int k = GETARG_C(i); /* key index */
kname(p, pc, k, name);
return "method";
}
default: break; /* go through to return NULL */
}
}
return NULL; /* could not find reasonable name */
}
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
TMS tm;
Proto *p = ci_func(ci)->p; /* calling function */
int pc = currentpc(ci); /* calling instruction index */
Instruction i = p->code[pc]; /* calling instruction */
switch (GET_OPCODE(i)) {
case OP_CALL:
case OP_TAILCALL: /* get function name */
return getobjname(p, pc, GETARG_A(i), name);
case OP_TFORCALL: { /* for iterator */
*name = "for iterator";
return "for iterator";
}
/* all other instructions can call only through metamethods */
case OP_SELF:
case OP_GETTABUP:
case OP_GETTABLE: tm = TM_INDEX; break;
case OP_SETTABUP:
case OP_SETTABLE: tm = TM_NEWINDEX; break;
case OP_EQ: tm = TM_EQ; break;
case OP_ADD: tm = TM_ADD; break;
case OP_SUB: tm = TM_SUB; break;
case OP_MUL: tm = TM_MUL; break;
case OP_DIV: tm = TM_DIV; break;
case OP_MOD: tm = TM_MOD; break;
case OP_POW: tm = TM_POW; break;
case OP_UNM: tm = TM_UNM; break;
case OP_LEN: tm = TM_LEN; break;
case OP_LT: tm = TM_LT; break;
case OP_LE: tm = TM_LE; break;
case OP_CONCAT: tm = TM_CONCAT; break;
default:
return NULL; /* else no useful name can be found */
}
*name = getstr(G(L)->tmname[tm]);
return "metamethod";
}
/* }====================================================== */
/*
** only ANSI way to check whether a pointer points to an array
** (used only for error messages, so efficiency is not a big concern)
*/
static int isinstack (CallInfo *ci, const TValue *o) {
StkId p;
for (p = ci->u.l.base; p < ci->top; p++)
if (o == p) return 1;
return 0;
}
static const char *getupvalname (CallInfo *ci, const TValue *o,
const char **name) {
LClosure *c = ci_func(ci);
int i;
for (i = 0; i < c->nupvalues; i++) {
if (c->upvals[i]->v == o) {
*name = upvalname(c->p, i);
return "upvalue";
}
}
return NULL;
}
l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
CallInfo *ci = L->ci;
const char *name = NULL;
const char *t = objtypename(o);
const char *kind = NULL;
if (isLua(ci)) {
kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */
if (!kind && isinstack(ci, o)) /* no? try a register */
kind = getobjname(ci_func(ci)->p, currentpc(ci),
cast_int(o - ci->u.l.base), &name);
}
if (kind)
luaG_runerror(L, "attempt to %s %s " LUA_QS " (a %s value)",
op, kind, name, t);
else
luaG_runerror(L, "attempt to %s a %s value", op, t);
}
l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2) {
if (ttisstring(p1) || ttisnumber(p1)) p1 = p2;
lua_assert(!ttisstring(p1) && !ttisnumber(p1));
luaG_typeerror(L, p1, "concatenate");
}
l_noret luaG_aritherror (lua_State *L, const TValue *p1, const TValue *p2) {
TValue temp;
if (luaV_tonumber(p1, &temp) == NULL)
p2 = p1; /* first operand is wrong */
luaG_typeerror(L, p2, "perform arithmetic on");
}
l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
const char *t1 = objtypename(p1);
const char *t2 = objtypename(p2);
if (t1 == t2)
luaG_runerror(L, "attempt to compare two %s values", t1);
else
luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
}
static void addinfo (lua_State *L, const char *msg) {
CallInfo *ci = L->ci;
if (isLua(ci)) { /* is Lua code? */
char buff[LUA_IDSIZE]; /* add file:line information */
int line = currentline(ci);
TString *src = ci_func(ci)->p->source;
if (src)
luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
else { /* no source available; use "?" instead */
buff[0] = '?'; buff[1] = '\0';
}
luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
}
}
l_noret luaG_errormsg (lua_State *L) {
if (L->errfunc != 0) { /* is there an error handling function? */
StkId errfunc = restorestack(L, L->errfunc);
if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
setobjs2s(L, L->top, L->top - 1); /* move argument */
setobjs2s(L, L->top - 1, errfunc); /* push function */
L->top++;
luaD_call(L, L->top - 2, 1, 0); /* call it */
}
luaD_throw(L, LUA_ERRRUN);
}
l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
va_list argp;
va_start(argp, fmt);
addinfo(L, luaO_pushvfstring(L, fmt, argp));
va_end(argp);
luaG_errormsg(L);
}

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@ -0,0 +1,34 @@
/*
** $Id: ldebug.h,v 2.7.1.1 2013/04/12 18:48:47 roberto Exp $
** Auxiliary functions from Debug Interface module
** See Copyright Notice in lua.h
*/
#ifndef ldebug_h
#define ldebug_h
#include "lstate.h"
#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1)
#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
#define resethookcount(L) (L->hookcount = L->basehookcount)
/* Active Lua function (given call info) */
#define ci_func(ci) (clLvalue((ci)->func))
LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
const char *opname);
LUAI_FUNC l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2);
LUAI_FUNC l_noret luaG_aritherror (lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1,
const TValue *p2);
LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
#endif

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@ -0,0 +1,681 @@
/*
** $Id: ldo.c,v 2.108.1.3 2013/11/08 18:22:50 roberto Exp $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
#define ldo_c
#define LUA_CORE
#include "lua.h"
#include "lapi.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lundump.h"
#include "lvm.h"
#include "lzio.h"
/*
** {======================================================
** Error-recovery functions
** =======================================================
*/
/*
** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By
** default, Lua handles errors with exceptions when compiling as
** C++ code, with _longjmp/_setjmp when asked to use them, and with
** longjmp/setjmp otherwise.
*/
#if !defined(LUAI_THROW)
#if defined(__cplusplus) && !defined(LUA_USE_LONGJMP)
/* C++ exceptions */
#define LUAI_THROW(L,c) throw(c)
#define LUAI_TRY(L,c,a) \
try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
#define luai_jmpbuf int /* dummy variable */
#elif defined(LUA_USE_ULONGJMP)
/* in Unix, try _longjmp/_setjmp (more efficient) */
#define LUAI_THROW(L,c) _longjmp((c)->b, 1)
#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a }
#define luai_jmpbuf jmp_buf
#else
/* default handling with long jumps */
#define LUAI_THROW(L,c) longjmp((c)->b, 1)
#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
#define luai_jmpbuf jmp_buf
#endif
#endif
/* chain list of long jump buffers */
struct lua_longjmp {
struct lua_longjmp *previous;
luai_jmpbuf b;
volatile int status; /* error code */
};
static void seterrorobj (lua_State *L, int errcode, StkId oldtop) {
switch (errcode) {
case LUA_ERRMEM: { /* memory error? */
setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */
break;
}
case LUA_ERRERR: {
setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling"));
break;
}
default: {
setobjs2s(L, oldtop, L->top - 1); /* error message on current top */
break;
}
}
L->top = oldtop + 1;
}
l_noret luaD_throw (lua_State *L, int errcode) {
if (L->errorJmp) { /* thread has an error handler? */
L->errorJmp->status = errcode; /* set status */
LUAI_THROW(L, L->errorJmp); /* jump to it */
}
else { /* thread has no error handler */
L->status = cast_byte(errcode); /* mark it as dead */
if (G(L)->mainthread->errorJmp) { /* main thread has a handler? */
setobjs2s(L, G(L)->mainthread->top++, L->top - 1); /* copy error obj. */
luaD_throw(G(L)->mainthread, errcode); /* re-throw in main thread */
}
else { /* no handler at all; abort */
if (G(L)->panic) { /* panic function? */
lua_unlock(L);
G(L)->panic(L); /* call it (last chance to jump out) */
}
abort();
}
}
}
int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
unsigned short oldnCcalls = L->nCcalls;
struct lua_longjmp lj;
lj.status = LUA_OK;
lj.previous = L->errorJmp; /* chain new error handler */
L->errorJmp = &lj;
LUAI_TRY(L, &lj,
(*f)(L, ud);
);
L->errorJmp = lj.previous; /* restore old error handler */
L->nCcalls = oldnCcalls;
return lj.status;
}
/* }====================================================== */
static void correctstack (lua_State *L, TValue *oldstack) {
CallInfo *ci;
GCObject *up;
L->top = (L->top - oldstack) + L->stack;
for (up = L->openupval; up != NULL; up = up->gch.next)
gco2uv(up)->v = (gco2uv(up)->v - oldstack) + L->stack;
for (ci = L->ci; ci != NULL; ci = ci->previous) {
ci->top = (ci->top - oldstack) + L->stack;
ci->func = (ci->func - oldstack) + L->stack;
if (isLua(ci))
ci->u.l.base = (ci->u.l.base - oldstack) + L->stack;
}
}
/* some space for error handling */
#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200)
void luaD_reallocstack (lua_State *L, int newsize) {
TValue *oldstack = L->stack;
int lim = L->stacksize;
lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE);
lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK);
luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue);
for (; lim < newsize; lim++)
setnilvalue(L->stack + lim); /* erase new segment */
L->stacksize = newsize;
L->stack_last = L->stack + newsize - EXTRA_STACK;
correctstack(L, oldstack);
}
void luaD_growstack (lua_State *L, int n) {
int size = L->stacksize;
if (size > LUAI_MAXSTACK) /* error after extra size? */
luaD_throw(L, LUA_ERRERR);
else {
int needed = cast_int(L->top - L->stack) + n + EXTRA_STACK;
int newsize = 2 * size;
if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK;
if (newsize < needed) newsize = needed;
if (newsize > LUAI_MAXSTACK) { /* stack overflow? */
luaD_reallocstack(L, ERRORSTACKSIZE);
luaG_runerror(L, "stack overflow");
}
else
luaD_reallocstack(L, newsize);
}
}
static int stackinuse (lua_State *L) {
CallInfo *ci;
StkId lim = L->top;
for (ci = L->ci; ci != NULL; ci = ci->previous) {
lua_assert(ci->top <= L->stack_last);
if (lim < ci->top) lim = ci->top;
}
return cast_int(lim - L->stack) + 1; /* part of stack in use */
}
void luaD_shrinkstack (lua_State *L) {
int inuse = stackinuse(L);
int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK;
if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK;
if (inuse > LUAI_MAXSTACK || /* handling stack overflow? */
goodsize >= L->stacksize) /* would grow instead of shrink? */
condmovestack(L); /* don't change stack (change only for debugging) */
else
luaD_reallocstack(L, goodsize); /* shrink it */
}
void luaD_hook (lua_State *L, int event, int line) {
lua_Hook hook = L->hook;
if (hook && L->allowhook) {
CallInfo *ci = L->ci;
ptrdiff_t top = savestack(L, L->top);
ptrdiff_t ci_top = savestack(L, ci->top);
lua_Debug ar;
ar.event = event;
ar.currentline = line;
ar.i_ci = ci;
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
ci->top = L->top + LUA_MINSTACK;
lua_assert(ci->top <= L->stack_last);
L->allowhook = 0; /* cannot call hooks inside a hook */
ci->callstatus |= CIST_HOOKED;
lua_unlock(L);
(*hook)(L, &ar);
lua_lock(L);
lua_assert(!L->allowhook);
L->allowhook = 1;
ci->top = restorestack(L, ci_top);
L->top = restorestack(L, top);
ci->callstatus &= ~CIST_HOOKED;
}
}
static void callhook (lua_State *L, CallInfo *ci) {
int hook = LUA_HOOKCALL;
ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */
if (isLua(ci->previous) &&
GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) {
ci->callstatus |= CIST_TAIL;
hook = LUA_HOOKTAILCALL;
}
luaD_hook(L, hook, -1);
ci->u.l.savedpc--; /* correct 'pc' */
}
static StkId adjust_varargs (lua_State *L, Proto *p, int actual) {
int i;
int nfixargs = p->numparams;
StkId base, fixed;
lua_assert(actual >= nfixargs);
/* move fixed parameters to final position */
luaD_checkstack(L, p->maxstacksize); /* check again for new 'base' */
fixed = L->top - actual; /* first fixed argument */
base = L->top; /* final position of first argument */
for (i=0; i<nfixargs; i++) {
setobjs2s(L, L->top++, fixed + i);
setnilvalue(fixed + i);
}
return base;
}
static StkId tryfuncTM (lua_State *L, StkId func) {
const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL);
StkId p;
ptrdiff_t funcr = savestack(L, func);
if (!ttisfunction(tm))
luaG_typeerror(L, func, "call");
/* Open a hole inside the stack at `func' */
for (p = L->top; p > func; p--) setobjs2s(L, p, p-1);
incr_top(L);
func = restorestack(L, funcr); /* previous call may change stack */
setobj2s(L, func, tm); /* tag method is the new function to be called */
return func;
}
#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L)))
/*
** returns true if function has been executed (C function)
*/
int luaD_precall (lua_State *L, StkId func, int nresults) {
lua_CFunction f;
CallInfo *ci;
int n; /* number of arguments (Lua) or returns (C) */
ptrdiff_t funcr = savestack(L, func);
switch (ttype(func)) {
case LUA_TLCF: /* light C function */
f = fvalue(func);
goto Cfunc;
case LUA_TCCL: { /* C closure */
f = clCvalue(func)->f;
Cfunc:
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
ci = next_ci(L); /* now 'enter' new function */
ci->nresults = (short)nresults;
ci->func = restorestack(L, funcr);
ci->top = L->top + LUA_MINSTACK;
lua_assert(ci->top <= L->stack_last);
ci->callstatus = 0;
luaC_checkGC(L); /* stack grow uses memory */
if (L->hookmask & LUA_MASKCALL)
luaD_hook(L, LUA_HOOKCALL, -1);
lua_unlock(L);
n = (*f)(L); /* do the actual call */
lua_lock(L);
api_checknelems(L, n);
luaD_poscall(L, L->top - n);
return 1;
}
case LUA_TLCL: { /* Lua function: prepare its call */
StkId base;
Proto *p = clLvalue(func)->p;
n = cast_int(L->top - func) - 1; /* number of real arguments */
luaD_checkstack(L, p->maxstacksize);
for (; n < p->numparams; n++)
setnilvalue(L->top++); /* complete missing arguments */
if (!p->is_vararg) {
func = restorestack(L, funcr);
base = func + 1;
}
else {
base = adjust_varargs(L, p, n);
func = restorestack(L, funcr); /* previous call can change stack */
}
ci = next_ci(L); /* now 'enter' new function */
ci->nresults = (short)nresults;
ci->func = func;
ci->u.l.base = base;
ci->top = base + p->maxstacksize;
lua_assert(ci->top <= L->stack_last);
ci->u.l.savedpc = p->code; /* starting point */
ci->callstatus = CIST_LUA;
L->top = ci->top;
luaC_checkGC(L); /* stack grow uses memory */
if (L->hookmask & LUA_MASKCALL)
callhook(L, ci);
return 0;
}
default: { /* not a function */
func = tryfuncTM(L, func); /* retry with 'function' tag method */
return luaD_precall(L, func, nresults); /* now it must be a function */
}
}
}
int luaD_poscall (lua_State *L, StkId firstResult) {
StkId res;
int wanted, i;
CallInfo *ci = L->ci;
if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) {
if (L->hookmask & LUA_MASKRET) {
ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */
luaD_hook(L, LUA_HOOKRET, -1);
firstResult = restorestack(L, fr);
}
L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */
}
res = ci->func; /* res == final position of 1st result */
wanted = ci->nresults;
L->ci = ci = ci->previous; /* back to caller */
/* move results to correct place */
for (i = wanted; i != 0 && firstResult < L->top; i--)
setobjs2s(L, res++, firstResult++);
while (i-- > 0)
setnilvalue(res++);
L->top = res;
return (wanted - LUA_MULTRET); /* 0 iff wanted == LUA_MULTRET */
}
/*
** Call a function (C or Lua). The function to be called is at *func.
** The arguments are on the stack, right after the function.
** When returns, all the results are on the stack, starting at the original
** function position.
*/
void luaD_call (lua_State *L, StkId func, int nResults, int allowyield) {
if (++L->nCcalls >= LUAI_MAXCCALLS) {
if (L->nCcalls == LUAI_MAXCCALLS)
luaG_runerror(L, "C stack overflow");
else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3)))
luaD_throw(L, LUA_ERRERR); /* error while handing stack error */
}
if (!allowyield) L->nny++;
if (!luaD_precall(L, func, nResults)) /* is a Lua function? */
luaV_execute(L); /* call it */
if (!allowyield) L->nny--;
L->nCcalls--;
}
static void finishCcall (lua_State *L) {
CallInfo *ci = L->ci;
int n;
lua_assert(ci->u.c.k != NULL); /* must have a continuation */
lua_assert(L->nny == 0);
if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */
ci->callstatus &= ~CIST_YPCALL; /* finish 'lua_pcall' */
L->errfunc = ci->u.c.old_errfunc;
}
/* finish 'lua_callk'/'lua_pcall' */
adjustresults(L, ci->nresults);
/* call continuation function */
if (!(ci->callstatus & CIST_STAT)) /* no call status? */
ci->u.c.status = LUA_YIELD; /* 'default' status */
lua_assert(ci->u.c.status != LUA_OK);
ci->callstatus = (ci->callstatus & ~(CIST_YPCALL | CIST_STAT)) | CIST_YIELDED;
lua_unlock(L);
n = (*ci->u.c.k)(L);
lua_lock(L);
api_checknelems(L, n);
/* finish 'luaD_precall' */
luaD_poscall(L, L->top - n);
}
static void unroll (lua_State *L, void *ud) {
UNUSED(ud);
for (;;) {
if (L->ci == &L->base_ci) /* stack is empty? */
return; /* coroutine finished normally */
if (!isLua(L->ci)) /* C function? */
finishCcall(L);
else { /* Lua function */
luaV_finishOp(L); /* finish interrupted instruction */
luaV_execute(L); /* execute down to higher C 'boundary' */
}
}
}
/*
** check whether thread has a suspended protected call
*/
static CallInfo *findpcall (lua_State *L) {
CallInfo *ci;
for (ci = L->ci; ci != NULL; ci = ci->previous) { /* search for a pcall */
if (ci->callstatus & CIST_YPCALL)
return ci;
}
return NULL; /* no pending pcall */
}
static int recover (lua_State *L, int status) {
StkId oldtop;
CallInfo *ci = findpcall(L);
if (ci == NULL) return 0; /* no recovery point */
/* "finish" luaD_pcall */
oldtop = restorestack(L, ci->extra);
luaF_close(L, oldtop);
seterrorobj(L, status, oldtop);
L->ci = ci;
L->allowhook = ci->u.c.old_allowhook;
L->nny = 0; /* should be zero to be yieldable */
luaD_shrinkstack(L);
L->errfunc = ci->u.c.old_errfunc;
ci->callstatus |= CIST_STAT; /* call has error status */
ci->u.c.status = (lu_byte)status; /* (here it is) */
return 1; /* continue running the coroutine */
}
/*
** signal an error in the call to 'resume', not in the execution of the
** coroutine itself. (Such errors should not be handled by any coroutine
** error handler and should not kill the coroutine.)
*/
static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
L->top = firstArg; /* remove args from the stack */
setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */
api_incr_top(L);
luaD_throw(L, -1); /* jump back to 'lua_resume' */
}
/*
** do the work for 'lua_resume' in protected mode
*/
static void resume (lua_State *L, void *ud) {
int nCcalls = L->nCcalls;
StkId firstArg = cast(StkId, ud);
CallInfo *ci = L->ci;
if (nCcalls >= LUAI_MAXCCALLS)
resume_error(L, "C stack overflow", firstArg);
if (L->status == LUA_OK) { /* may be starting a coroutine */
if (ci != &L->base_ci) /* not in base level? */
resume_error(L, "cannot resume non-suspended coroutine", firstArg);
/* coroutine is in base level; start running it */
if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */
luaV_execute(L); /* call it */
}
else if (L->status != LUA_YIELD)
resume_error(L, "cannot resume dead coroutine", firstArg);
else { /* resuming from previous yield */
L->status = LUA_OK;
ci->func = restorestack(L, ci->extra);
if (isLua(ci)) /* yielded inside a hook? */
luaV_execute(L); /* just continue running Lua code */
else { /* 'common' yield */
if (ci->u.c.k != NULL) { /* does it have a continuation? */
int n;
ci->u.c.status = LUA_YIELD; /* 'default' status */
ci->callstatus |= CIST_YIELDED;
lua_unlock(L);
n = (*ci->u.c.k)(L); /* call continuation */
lua_lock(L);
api_checknelems(L, n);
firstArg = L->top - n; /* yield results come from continuation */
}
luaD_poscall(L, firstArg); /* finish 'luaD_precall' */
}
unroll(L, NULL);
}
lua_assert(nCcalls == L->nCcalls);
}
LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
int status;
int oldnny = L->nny; /* save 'nny' */
lua_lock(L);
luai_userstateresume(L, nargs);
L->nCcalls = (from) ? from->nCcalls + 1 : 1;
L->nny = 0; /* allow yields */
api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs);
status = luaD_rawrunprotected(L, resume, L->top - nargs);
if (status == -1) /* error calling 'lua_resume'? */
status = LUA_ERRRUN;
else { /* yield or regular error */
while (status != LUA_OK && status != LUA_YIELD) { /* error? */
if (recover(L, status)) /* recover point? */
status = luaD_rawrunprotected(L, unroll, NULL); /* run continuation */
else { /* unrecoverable error */
L->status = cast_byte(status); /* mark thread as `dead' */
seterrorobj(L, status, L->top);
L->ci->top = L->top;
break;
}
}
lua_assert(status == L->status);
}
L->nny = (unsigned short)oldnny; /* restore 'nny' */
L->nCcalls--;
lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0));
lua_unlock(L);
return status;
}
LUA_API int lua_yieldk (lua_State *L, int nresults, int ctx, lua_CFunction k) {
CallInfo *ci = L->ci;
luai_userstateyield(L, nresults);
lua_lock(L);
api_checknelems(L, nresults);
if (L->nny > 0) {
if (L != G(L)->mainthread)
luaG_runerror(L, "attempt to yield across a C-call boundary");
else
luaG_runerror(L, "attempt to yield from outside a coroutine");
}
L->status = LUA_YIELD;
ci->extra = savestack(L, ci->func); /* save current 'func' */
if (isLua(ci)) { /* inside a hook? */
api_check(L, k == NULL, "hooks cannot continue after yielding");
}
else {
if ((ci->u.c.k = k) != NULL) /* is there a continuation? */
ci->u.c.ctx = ctx; /* save context */
ci->func = L->top - nresults - 1; /* protect stack below results */
luaD_throw(L, LUA_YIELD);
}
lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */
lua_unlock(L);
return 0; /* return to 'luaD_hook' */
}
int luaD_pcall (lua_State *L, Pfunc func, void *u,
ptrdiff_t old_top, ptrdiff_t ef) {
int status;
CallInfo *old_ci = L->ci;
lu_byte old_allowhooks = L->allowhook;
unsigned short old_nny = L->nny;
ptrdiff_t old_errfunc = L->errfunc;
L->errfunc = ef;
status = luaD_rawrunprotected(L, func, u);
if (status != LUA_OK) { /* an error occurred? */
StkId oldtop = restorestack(L, old_top);
luaF_close(L, oldtop); /* close possible pending closures */
seterrorobj(L, status, oldtop);
L->ci = old_ci;
L->allowhook = old_allowhooks;
L->nny = old_nny;
luaD_shrinkstack(L);
}
L->errfunc = old_errfunc;
return status;
}
/*
** Execute a protected parser.
*/
struct SParser { /* data to `f_parser' */
ZIO *z;
Mbuffer buff; /* dynamic structure used by the scanner */
Dyndata dyd; /* dynamic structures used by the parser */
const char *mode;
const char *name;
};
static void checkmode (lua_State *L, const char *mode, const char *x) {
if (mode && strchr(mode, x[0]) == NULL) {
luaO_pushfstring(L,
"attempt to load a %s chunk (mode is " LUA_QS ")", x, mode);
luaD_throw(L, LUA_ERRSYNTAX);
}
}
static void f_parser (lua_State *L, void *ud) {
int i;
Closure *cl;
struct SParser *p = cast(struct SParser *, ud);
int c = zgetc(p->z); /* read first character */
if (c == LUA_SIGNATURE[0]) {
checkmode(L, p->mode, "binary");
cl = luaU_undump(L, p->z, &p->buff, p->name);
}
else {
checkmode(L, p->mode, "text");
cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c);
}
lua_assert(cl->l.nupvalues == cl->l.p->sizeupvalues);
for (i = 0; i < cl->l.nupvalues; i++) { /* initialize upvalues */
UpVal *up = luaF_newupval(L);
cl->l.upvals[i] = up;
luaC_objbarrier(L, cl, up);
}
}
int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode) {
struct SParser p;
int status;
L->nny++; /* cannot yield during parsing */
p.z = z; p.name = name; p.mode = mode;
p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0;
p.dyd.gt.arr = NULL; p.dyd.gt.size = 0;
p.dyd.label.arr = NULL; p.dyd.label.size = 0;
luaZ_initbuffer(L, &p.buff);
status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc);
luaZ_freebuffer(L, &p.buff);
luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size);
luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size);
luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size);
L->nny--;
return status;
}

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/*
** $Id: ldo.h,v 2.20.1.1 2013/04/12 18:48:47 roberto Exp $
** Stack and Call structure of Lua
** See Copyright Notice in lua.h
*/
#ifndef ldo_h
#define ldo_h
#include "lobject.h"
#include "lstate.h"
#include "lzio.h"
#define luaD_checkstack(L,n) if (L->stack_last - L->top <= (n)) \
luaD_growstack(L, n); else condmovestack(L);
#define incr_top(L) {L->top++; luaD_checkstack(L,0);}
#define savestack(L,p) ((char *)(p) - (char *)L->stack)
#define restorestack(L,n) ((TValue *)((char *)L->stack + (n)))
/* type of protected functions, to be ran by `runprotected' */
typedef void (*Pfunc) (lua_State *L, void *ud);
LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode);
LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
int allowyield);
LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
ptrdiff_t oldtop, ptrdiff_t ef);
LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
LUAI_FUNC void luaD_growstack (lua_State *L, int n);
LUAI_FUNC void luaD_shrinkstack (lua_State *L);
LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
#endif

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/*
** $Id: ldump.c,v 2.17.1.1 2013/04/12 18:48:47 roberto Exp $
** save precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#define ldump_c
#define LUA_CORE
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lundump.h"
typedef struct {
lua_State* L;
lua_Writer writer;
void* data;
int strip;
int status;
} DumpState;
#define DumpMem(b,n,size,D) DumpBlock(b,(n)*(size),D)
#define DumpVar(x,D) DumpMem(&x,1,sizeof(x),D)
static void DumpBlock(const void* b, size_t size, DumpState* D)
{
if (D->status==0)
{
lua_unlock(D->L);
D->status=(*D->writer)(D->L,b,size,D->data);
lua_lock(D->L);
}
}
static void DumpChar(int y, DumpState* D)
{
char x=(char)y;
DumpVar(x,D);
}
static void DumpInt(int x, DumpState* D)
{
DumpVar(x,D);
}
static void DumpNumber(lua_Number x, DumpState* D)
{
DumpVar(x,D);
}
static void DumpVector(const void* b, int n, size_t size, DumpState* D)
{
DumpInt(n,D);
DumpMem(b,n,size,D);
}
static void DumpString(const TString* s, DumpState* D)
{
if (s==NULL)
{
size_t size=0;
DumpVar(size,D);
}
else
{
size_t size=s->tsv.len+1; /* include trailing '\0' */
DumpVar(size,D);
DumpBlock(getstr(s),size*sizeof(char),D);
}
}
#define DumpCode(f,D) DumpVector(f->code,f->sizecode,sizeof(Instruction),D)
static void DumpFunction(const Proto* f, DumpState* D);
static void DumpConstants(const Proto* f, DumpState* D)
{
int i,n=f->sizek;
DumpInt(n,D);
for (i=0; i<n; i++)
{
const TValue* o=&f->k[i];
DumpChar(ttypenv(o),D);
switch (ttypenv(o))
{
case LUA_TNIL:
break;
case LUA_TBOOLEAN:
DumpChar(bvalue(o),D);
break;
case LUA_TNUMBER:
DumpNumber(nvalue(o),D);
break;
case LUA_TSTRING:
DumpString(rawtsvalue(o),D);
break;
default: lua_assert(0);
}
}
n=f->sizep;
DumpInt(n,D);
for (i=0; i<n; i++) DumpFunction(f->p[i],D);
}
static void DumpUpvalues(const Proto* f, DumpState* D)
{
int i,n=f->sizeupvalues;
DumpInt(n,D);
for (i=0; i<n; i++)
{
DumpChar(f->upvalues[i].instack,D);
DumpChar(f->upvalues[i].idx,D);
}
}
static void DumpDebug(const Proto* f, DumpState* D)
{
int i,n;
DumpString((D->strip) ? NULL : f->source,D);
n= (D->strip) ? 0 : f->sizelineinfo;
DumpVector(f->lineinfo,n,sizeof(int),D);
n= (D->strip) ? 0 : f->sizelocvars;
DumpInt(n,D);
for (i=0; i<n; i++)
{
DumpString(f->locvars[i].varname,D);
DumpInt(f->locvars[i].startpc,D);
DumpInt(f->locvars[i].endpc,D);
}
n= (D->strip) ? 0 : f->sizeupvalues;
DumpInt(n,D);
for (i=0; i<n; i++) DumpString(f->upvalues[i].name,D);
}
static void DumpFunction(const Proto* f, DumpState* D)
{
DumpInt(f->linedefined,D);
DumpInt(f->lastlinedefined,D);
DumpChar(f->numparams,D);
DumpChar(f->is_vararg,D);
DumpChar(f->maxstacksize,D);
DumpCode(f,D);
DumpConstants(f,D);
DumpUpvalues(f,D);
DumpDebug(f,D);
}
static void DumpHeader(DumpState* D)
{
lu_byte h[LUAC_HEADERSIZE];
luaU_header(h);
DumpBlock(h,LUAC_HEADERSIZE,D);
}
/*
** dump Lua function as precompiled chunk
*/
int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
{
DumpState D;
D.L=L;
D.writer=w;
D.data=data;
D.strip=strip;
D.status=0;
DumpHeader(&D);
DumpFunction(f,&D);
return D.status;
}

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/*
** $Id: lfunc.c,v 2.30.1.1 2013/04/12 18:48:47 roberto Exp $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#define lfunc_c
#define LUA_CORE
#include "lua.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
Closure *luaF_newCclosure (lua_State *L, int n) {
Closure *c = &luaC_newobj(L, LUA_TCCL, sizeCclosure(n), NULL, 0)->cl;
c->c.nupvalues = cast_byte(n);
return c;
}
Closure *luaF_newLclosure (lua_State *L, int n) {
Closure *c = &luaC_newobj(L, LUA_TLCL, sizeLclosure(n), NULL, 0)->cl;
c->l.p = NULL;
c->l.nupvalues = cast_byte(n);
while (n--) c->l.upvals[n] = NULL;
return c;
}
UpVal *luaF_newupval (lua_State *L) {
UpVal *uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), NULL, 0)->uv;
uv->v = &uv->u.value;
setnilvalue(uv->v);
return uv;
}
UpVal *luaF_findupval (lua_State *L, StkId level) {
global_State *g = G(L);
GCObject **pp = &L->openupval;
UpVal *p;
UpVal *uv;
while (*pp != NULL && (p = gco2uv(*pp))->v >= level) {
GCObject *o = obj2gco(p);
lua_assert(p->v != &p->u.value);
lua_assert(!isold(o) || isold(obj2gco(L)));
if (p->v == level) { /* found a corresponding upvalue? */
if (isdead(g, o)) /* is it dead? */
changewhite(o); /* resurrect it */
return p;
}
pp = &p->next;
}
/* not found: create a new one */
uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), pp, 0)->uv;
uv->v = level; /* current value lives in the stack */
uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */
uv->u.l.next = g->uvhead.u.l.next;
uv->u.l.next->u.l.prev = uv;
g->uvhead.u.l.next = uv;
lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
return uv;
}
static void unlinkupval (UpVal *uv) {
lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
uv->u.l.next->u.l.prev = uv->u.l.prev; /* remove from `uvhead' list */
uv->u.l.prev->u.l.next = uv->u.l.next;
}
void luaF_freeupval (lua_State *L, UpVal *uv) {
if (uv->v != &uv->u.value) /* is it open? */
unlinkupval(uv); /* remove from open list */
luaM_free(L, uv); /* free upvalue */
}
void luaF_close (lua_State *L, StkId level) {
UpVal *uv;
global_State *g = G(L);
while (L->openupval != NULL && (uv = gco2uv(L->openupval))->v >= level) {
GCObject *o = obj2gco(uv);
lua_assert(!isblack(o) && uv->v != &uv->u.value);
L->openupval = uv->next; /* remove from `open' list */
if (isdead(g, o))
luaF_freeupval(L, uv); /* free upvalue */
else {
unlinkupval(uv); /* remove upvalue from 'uvhead' list */
setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */
uv->v = &uv->u.value; /* now current value lives here */
gch(o)->next = g->allgc; /* link upvalue into 'allgc' list */
g->allgc = o;
luaC_checkupvalcolor(g, uv);
}
}
}
Proto *luaF_newproto (lua_State *L) {
Proto *f = &luaC_newobj(L, LUA_TPROTO, sizeof(Proto), NULL, 0)->p;
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->cache = NULL;
f->sizecode = 0;
f->lineinfo = NULL;
f->sizelineinfo = 0;
f->upvalues = NULL;
f->sizeupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->locvars = NULL;
f->sizelocvars = 0;
f->linedefined = 0;
f->lastlinedefined = 0;
f->source = NULL;
return f;
}
void luaF_freeproto (lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode);
luaM_freearray(L, f->p, f->sizep);
luaM_freearray(L, f->k, f->sizek);
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
luaM_freearray(L, f->locvars, f->sizelocvars);
luaM_freearray(L, f->upvalues, f->sizeupvalues);
luaM_free(L, f);
}
/*
** Look for n-th local variable at line `line' in function `func'.
** Returns NULL if not found.
*/
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
}
}
return NULL; /* not found */
}

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/*
** $Id: lfunc.h,v 2.8.1.1 2013/04/12 18:48:47 roberto Exp $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#ifndef lfunc_h
#define lfunc_h
#include "lobject.h"
#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
cast(int, sizeof(TValue)*((n)-1)))
#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
cast(int, sizeof(TValue *)*((n)-1)))
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
LUAI_FUNC Closure *luaF_newCclosure (lua_State *L, int nelems);
LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems);
LUAI_FUNC UpVal *luaF_newupval (lua_State *L);
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
LUAI_FUNC void luaF_close (lua_State *L, StkId level);
LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
LUAI_FUNC void luaF_freeupval (lua_State *L, UpVal *uv);
LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
int pc);
#endif

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/*
** $Id: lgc.h,v 2.58.1.1 2013/04/12 18:48:47 roberto Exp $
** Garbage Collector
** See Copyright Notice in lua.h
*/
#ifndef lgc_h
#define lgc_h
#include "lobject.h"
#include "lstate.h"
/*
** Collectable objects may have one of three colors: white, which
** means the object is not marked; gray, which means the
** object is marked, but its references may be not marked; and
** black, which means that the object and all its references are marked.
** The main invariant of the garbage collector, while marking objects,
** is that a black object can never point to a white one. Moreover,
** any gray object must be in a "gray list" (gray, grayagain, weak,
** allweak, ephemeron) so that it can be visited again before finishing
** the collection cycle. These lists have no meaning when the invariant
** is not being enforced (e.g., sweep phase).
*/
/* how much to allocate before next GC step */
#if !defined(GCSTEPSIZE)
/* ~100 small strings */
#define GCSTEPSIZE (cast_int(100 * sizeof(TString)))
#endif
/*
** Possible states of the Garbage Collector
*/
#define GCSpropagate 0
#define GCSatomic 1
#define GCSsweepstring 2
#define GCSsweepudata 3
#define GCSsweep 4
#define GCSpause 5
#define issweepphase(g) \
(GCSsweepstring <= (g)->gcstate && (g)->gcstate <= GCSsweep)
#define isgenerational(g) ((g)->gckind == KGC_GEN)
/*
** macros to tell when main invariant (white objects cannot point to black
** ones) must be kept. During a non-generational collection, the sweep
** phase may break the invariant, as objects turned white may point to
** still-black objects. The invariant is restored when sweep ends and
** all objects are white again. During a generational collection, the
** invariant must be kept all times.
*/
#define keepinvariant(g) (isgenerational(g) || g->gcstate <= GCSatomic)
/*
** Outside the collector, the state in generational mode is kept in
** 'propagate', so 'keepinvariant' is always true.
*/
#define keepinvariantout(g) \
check_exp(g->gcstate == GCSpropagate || !isgenerational(g), \
g->gcstate <= GCSatomic)
/*
** some useful bit tricks
*/
#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m)))
#define setbits(x,m) ((x) |= (m))
#define testbits(x,m) ((x) & (m))
#define bitmask(b) (1<<(b))
#define bit2mask(b1,b2) (bitmask(b1) | bitmask(b2))
#define l_setbit(x,b) setbits(x, bitmask(b))
#define resetbit(x,b) resetbits(x, bitmask(b))
#define testbit(x,b) testbits(x, bitmask(b))
/* Layout for bit use in `marked' field: */
#define WHITE0BIT 0 /* object is white (type 0) */
#define WHITE1BIT 1 /* object is white (type 1) */
#define BLACKBIT 2 /* object is black */
#define FINALIZEDBIT 3 /* object has been separated for finalization */
#define SEPARATED 4 /* object is in 'finobj' list or in 'tobefnz' */
#define FIXEDBIT 5 /* object is fixed (should not be collected) */
#define OLDBIT 6 /* object is old (only in generational mode) */
/* bit 7 is currently used by tests (luaL_checkmemory) */
#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)
#define iswhite(x) testbits((x)->gch.marked, WHITEBITS)
#define isblack(x) testbit((x)->gch.marked, BLACKBIT)
#define isgray(x) /* neither white nor black */ \
(!testbits((x)->gch.marked, WHITEBITS | bitmask(BLACKBIT)))
#define isold(x) testbit((x)->gch.marked, OLDBIT)
/* MOVE OLD rule: whenever an object is moved to the beginning of
a GC list, its old bit must be cleared */
#define resetoldbit(o) resetbit((o)->gch.marked, OLDBIT)
#define otherwhite(g) (g->currentwhite ^ WHITEBITS)
#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow)))
#define isdead(g,v) isdeadm(otherwhite(g), (v)->gch.marked)
#define changewhite(x) ((x)->gch.marked ^= WHITEBITS)
#define gray2black(x) l_setbit((x)->gch.marked, BLACKBIT)
#define valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x)))
#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS)
#define luaC_condGC(L,c) \
{if (G(L)->GCdebt > 0) {c;}; condchangemem(L);}
#define luaC_checkGC(L) luaC_condGC(L, luaC_step(L);)
#define luaC_barrier(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p))) \
luaC_barrier_(L,obj2gco(p),gcvalue(v)); }
#define luaC_barrierback(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p))) \
luaC_barrierback_(L,p); }
#define luaC_objbarrier(L,p,o) \
{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \
luaC_barrier_(L,obj2gco(p),obj2gco(o)); }
#define luaC_objbarrierback(L,p,o) \
{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) luaC_barrierback_(L,p); }
#define luaC_barrierproto(L,p,c) \
{ if (isblack(obj2gco(p))) luaC_barrierproto_(L,p,c); }
LUAI_FUNC void luaC_freeallobjects (lua_State *L);
LUAI_FUNC void luaC_step (lua_State *L);
LUAI_FUNC void luaC_forcestep (lua_State *L);
LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask);
LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency);
LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz,
GCObject **list, int offset);
LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v);
LUAI_FUNC void luaC_barrierback_ (lua_State *L, GCObject *o);
LUAI_FUNC void luaC_barrierproto_ (lua_State *L, Proto *p, Closure *c);
LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
LUAI_FUNC void luaC_checkupvalcolor (global_State *g, UpVal *uv);
LUAI_FUNC void luaC_changemode (lua_State *L, int mode);
#endif

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/*
** $Id: linit.c,v 1.32.1.1 2013/04/12 18:48:47 roberto Exp $
** Initialization of libraries for lua.c and other clients
** See Copyright Notice in lua.h
*/
/*
** If you embed Lua in your program and need to open the standard
** libraries, call luaL_openlibs in your program. If you need a
** different set of libraries, copy this file to your project and edit
** it to suit your needs.
*/
#define linit_c
#define LUA_LIB
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
/*
** these libs are loaded by lua.c and are readily available to any Lua
** program
*/
static const luaL_Reg loadedlibs[] = {
{"_G", luaopen_base},
{LUA_LOADLIBNAME, luaopen_package},
{LUA_COLIBNAME, luaopen_coroutine},
{LUA_TABLIBNAME, luaopen_table},
{LUA_IOLIBNAME, luaopen_io},
{LUA_OSLIBNAME, luaopen_os},
{LUA_STRLIBNAME, luaopen_string},
{LUA_BITLIBNAME, luaopen_bit32},
{LUA_MATHLIBNAME, luaopen_math},
{LUA_DBLIBNAME, luaopen_debug},
{NULL, NULL}
};
/*
** these libs are preloaded and must be required before used
*/
static const luaL_Reg preloadedlibs[] = {
{NULL, NULL}
};
LUALIB_API void luaL_openlibs (lua_State *L) {
const luaL_Reg *lib;
/* call open functions from 'loadedlibs' and set results to global table */
for (lib = loadedlibs; lib->func; lib++) {
luaL_requiref(L, lib->name, lib->func, 1);
lua_pop(L, 1); /* remove lib */
}
/* add open functions from 'preloadedlibs' into 'package.preload' table */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
for (lib = preloadedlibs; lib->func; lib++) {
lua_pushcfunction(L, lib->func);
lua_setfield(L, -2, lib->name);
}
lua_pop(L, 1); /* remove _PRELOAD table */
}

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/*
** $Id: liolib.c,v 2.112.1.1 2013/04/12 18:48:47 roberto Exp $
** Standard I/O (and system) library
** See Copyright Notice in lua.h
*/
/*
** This definition must come before the inclusion of 'stdio.h'; it
** should not affect non-POSIX systems
*/
#if !defined(_FILE_OFFSET_BITS)
#define _LARGEFILE_SOURCE 1
#define _FILE_OFFSET_BITS 64
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define liolib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#if !defined(lua_checkmode)
/*
** Check whether 'mode' matches '[rwa]%+?b?'.
** Change this macro to accept other modes for 'fopen' besides
** the standard ones.
*/
#define lua_checkmode(mode) \
(*mode != '\0' && strchr("rwa", *(mode++)) != NULL && \
(*mode != '+' || ++mode) && /* skip if char is '+' */ \
(*mode != 'b' || ++mode) && /* skip if char is 'b' */ \
(*mode == '\0'))
#endif
/*
** {======================================================
** lua_popen spawns a new process connected to the current
** one through the file streams.
** =======================================================
*/
#if !defined(lua_popen) /* { */
#if defined(LUA_USE_POPEN) /* { */
#define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m))
#define lua_pclose(L,file) ((void)L, pclose(file))
#elif defined(LUA_WIN) /* }{ */
#define lua_popen(L,c,m) ((void)L, _popen(c,m))
#define lua_pclose(L,file) ((void)L, _pclose(file))
#else /* }{ */
#define lua_popen(L,c,m) ((void)((void)c, m), \
luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
#define lua_pclose(L,file) ((void)((void)L, file), -1)
#endif /* } */
#endif /* } */
/* }====================================================== */
/*
** {======================================================
** lua_fseek: configuration for longer offsets
** =======================================================
*/
#if !defined(lua_fseek) && !defined(LUA_ANSI) /* { */
#if defined(LUA_USE_POSIX) /* { */
#define l_fseek(f,o,w) fseeko(f,o,w)
#define l_ftell(f) ftello(f)
#define l_seeknum off_t
#elif defined(LUA_WIN) && !defined(_CRTIMP_TYPEINFO) \
&& defined(_MSC_VER) && (_MSC_VER >= 1400) /* }{ */
/* Windows (but not DDK) and Visual C++ 2005 or higher */
#define l_fseek(f,o,w) _fseeki64(f,o,w)
#define l_ftell(f) _ftelli64(f)
#define l_seeknum __int64
#endif /* } */
#endif /* } */
#if !defined(l_fseek) /* default definitions */
#define l_fseek(f,o,w) fseek(f,o,w)
#define l_ftell(f) ftell(f)
#define l_seeknum long
#endif
/* }====================================================== */
#define IO_PREFIX "_IO_"
#define IO_INPUT (IO_PREFIX "input")
#define IO_OUTPUT (IO_PREFIX "output")
typedef luaL_Stream LStream;
#define tolstream(L) ((LStream *)luaL_checkudata(L, 1, LUA_FILEHANDLE))
#define isclosed(p) ((p)->closef == NULL)
static int io_type (lua_State *L) {
LStream *p;
luaL_checkany(L, 1);
p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE);
if (p == NULL)
lua_pushnil(L); /* not a file */
else if (isclosed(p))
lua_pushliteral(L, "closed file");
else
lua_pushliteral(L, "file");
return 1;
}
static int f_tostring (lua_State *L) {
LStream *p = tolstream(L);
if (isclosed(p))
lua_pushliteral(L, "file (closed)");
else
lua_pushfstring(L, "file (%p)", p->f);
return 1;
}
static FILE *tofile (lua_State *L) {
LStream *p = tolstream(L);
if (isclosed(p))
luaL_error(L, "attempt to use a closed file");
lua_assert(p->f);
return p->f;
}
/*
** When creating file handles, always creates a `closed' file handle
** before opening the actual file; so, if there is a memory error, the
** file is not left opened.
*/
static LStream *newprefile (lua_State *L) {
LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream));
p->closef = NULL; /* mark file handle as 'closed' */
luaL_setmetatable(L, LUA_FILEHANDLE);
return p;
}
static int aux_close (lua_State *L) {
LStream *p = tolstream(L);
lua_CFunction cf = p->closef;
p->closef = NULL; /* mark stream as closed */
return (*cf)(L); /* close it */
}
static int io_close (lua_State *L) {
if (lua_isnone(L, 1)) /* no argument? */
lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */
tofile(L); /* make sure argument is an open stream */
return aux_close(L);
}
static int f_gc (lua_State *L) {
LStream *p = tolstream(L);
if (!isclosed(p) && p->f != NULL)
aux_close(L); /* ignore closed and incompletely open files */
return 0;
}
/*
** function to close regular files
*/
static int io_fclose (lua_State *L) {
LStream *p = tolstream(L);
int res = fclose(p->f);
return luaL_fileresult(L, (res == 0), NULL);
}
static LStream *newfile (lua_State *L) {
LStream *p = newprefile(L);
p->f = NULL;
p->closef = &io_fclose;
return p;
}
static void opencheck (lua_State *L, const char *fname, const char *mode) {
LStream *p = newfile(L);
p->f = fopen(fname, mode);
if (p->f == NULL)
luaL_error(L, "cannot open file " LUA_QS " (%s)", fname, strerror(errno));
}
static int io_open (lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
const char *mode = luaL_optstring(L, 2, "r");
LStream *p = newfile(L);
const char *md = mode; /* to traverse/check mode */
luaL_argcheck(L, lua_checkmode(md), 2, "invalid mode");
p->f = fopen(filename, mode);
return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
}
/*
** function to close 'popen' files
*/
static int io_pclose (lua_State *L) {
LStream *p = tolstream(L);
return luaL_execresult(L, lua_pclose(L, p->f));
}
static int io_popen (lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
const char *mode = luaL_optstring(L, 2, "r");
LStream *p = newprefile(L);
p->f = lua_popen(L, filename, mode);
p->closef = &io_pclose;
return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
}
static int io_tmpfile (lua_State *L) {
LStream *p = newfile(L);
p->f = tmpfile();
return (p->f == NULL) ? luaL_fileresult(L, 0, NULL) : 1;
}
static FILE *getiofile (lua_State *L, const char *findex) {
LStream *p;
lua_getfield(L, LUA_REGISTRYINDEX, findex);
p = (LStream *)lua_touserdata(L, -1);
if (isclosed(p))
luaL_error(L, "standard %s file is closed", findex + strlen(IO_PREFIX));
return p->f;
}
static int g_iofile (lua_State *L, const char *f, const char *mode) {
if (!lua_isnoneornil(L, 1)) {
const char *filename = lua_tostring(L, 1);
if (filename)
opencheck(L, filename, mode);
else {
tofile(L); /* check that it's a valid file handle */
lua_pushvalue(L, 1);
}
lua_setfield(L, LUA_REGISTRYINDEX, f);
}
/* return current value */
lua_getfield(L, LUA_REGISTRYINDEX, f);
return 1;
}
static int io_input (lua_State *L) {
return g_iofile(L, IO_INPUT, "r");
}
static int io_output (lua_State *L) {
return g_iofile(L, IO_OUTPUT, "w");
}
static int io_readline (lua_State *L);
static void aux_lines (lua_State *L, int toclose) {
int i;
int n = lua_gettop(L) - 1; /* number of arguments to read */
/* ensure that arguments will fit here and into 'io_readline' stack */
luaL_argcheck(L, n <= LUA_MINSTACK - 3, LUA_MINSTACK - 3, "too many options");
lua_pushvalue(L, 1); /* file handle */
lua_pushinteger(L, n); /* number of arguments to read */
lua_pushboolean(L, toclose); /* close/not close file when finished */
for (i = 1; i <= n; i++) lua_pushvalue(L, i + 1); /* copy arguments */
lua_pushcclosure(L, io_readline, 3 + n);
}
static int f_lines (lua_State *L) {
tofile(L); /* check that it's a valid file handle */
aux_lines(L, 0);
return 1;
}
static int io_lines (lua_State *L) {
int toclose;
if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */
if (lua_isnil(L, 1)) { /* no file name? */
lua_getfield(L, LUA_REGISTRYINDEX, IO_INPUT); /* get default input */
lua_replace(L, 1); /* put it at index 1 */
tofile(L); /* check that it's a valid file handle */
toclose = 0; /* do not close it after iteration */
}
else { /* open a new file */
const char *filename = luaL_checkstring(L, 1);
opencheck(L, filename, "r");
lua_replace(L, 1); /* put file at index 1 */
toclose = 1; /* close it after iteration */
}
aux_lines(L, toclose);
return 1;
}
/*
** {======================================================
** READ
** =======================================================
*/
static int read_number (lua_State *L, FILE *f) {
lua_Number d;
if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
lua_pushnumber(L, d);
return 1;
}
else {
lua_pushnil(L); /* "result" to be removed */
return 0; /* read fails */
}
}
static int test_eof (lua_State *L, FILE *f) {
int c = getc(f);
ungetc(c, f);
lua_pushlstring(L, NULL, 0);
return (c != EOF);
}
static int read_line (lua_State *L, FILE *f, int chop) {
luaL_Buffer b;
luaL_buffinit(L, &b);
for (;;) {
size_t l;
char *p = luaL_prepbuffer(&b);
if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) { /* eof? */
luaL_pushresult(&b); /* close buffer */
return (lua_rawlen(L, -1) > 0); /* check whether read something */
}
l = strlen(p);
if (l == 0 || p[l-1] != '\n')
luaL_addsize(&b, l);
else {
luaL_addsize(&b, l - chop); /* chop 'eol' if needed */
luaL_pushresult(&b); /* close buffer */
return 1; /* read at least an `eol' */
}
}
}
#define MAX_SIZE_T (~(size_t)0)
static void read_all (lua_State *L, FILE *f) {
size_t rlen = LUAL_BUFFERSIZE; /* how much to read in each cycle */
luaL_Buffer b;
luaL_buffinit(L, &b);
for (;;) {
char *p = luaL_prepbuffsize(&b, rlen);
size_t nr = fread(p, sizeof(char), rlen, f);
luaL_addsize(&b, nr);
if (nr < rlen) break; /* eof? */
else if (rlen <= (MAX_SIZE_T / 4)) /* avoid buffers too large */
rlen *= 2; /* double buffer size at each iteration */
}
luaL_pushresult(&b); /* close buffer */
}
static int read_chars (lua_State *L, FILE *f, size_t n) {
size_t nr; /* number of chars actually read */
char *p;
luaL_Buffer b;
luaL_buffinit(L, &b);
p = luaL_prepbuffsize(&b, n); /* prepare buffer to read whole block */
nr = fread(p, sizeof(char), n, f); /* try to read 'n' chars */
luaL_addsize(&b, nr);
luaL_pushresult(&b); /* close buffer */
return (nr > 0); /* true iff read something */
}
static int g_read (lua_State *L, FILE *f, int first) {
int nargs = lua_gettop(L) - 1;
int success;
int n;
clearerr(f);
if (nargs == 0) { /* no arguments? */
success = read_line(L, f, 1);
n = first+1; /* to return 1 result */
}
else { /* ensure stack space for all results and for auxlib's buffer */
luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
success = 1;
for (n = first; nargs-- && success; n++) {
if (lua_type(L, n) == LUA_TNUMBER) {
size_t l = (size_t)lua_tointeger(L, n);
success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
}
else {
const char *p = lua_tostring(L, n);
luaL_argcheck(L, p && p[0] == '*', n, "invalid option");
switch (p[1]) {
case 'n': /* number */
success = read_number(L, f);
break;
case 'l': /* line */
success = read_line(L, f, 1);
break;
case 'L': /* line with end-of-line */
success = read_line(L, f, 0);
break;
case 'a': /* file */
read_all(L, f); /* read entire file */
success = 1; /* always success */
break;
default:
return luaL_argerror(L, n, "invalid format");
}
}
}
}
if (ferror(f))
return luaL_fileresult(L, 0, NULL);
if (!success) {
lua_pop(L, 1); /* remove last result */
lua_pushnil(L); /* push nil instead */
}
return n - first;
}
static int io_read (lua_State *L) {
return g_read(L, getiofile(L, IO_INPUT), 1);
}
static int f_read (lua_State *L) {
return g_read(L, tofile(L), 2);
}
static int io_readline (lua_State *L) {
LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1));
int i;
int n = (int)lua_tointeger(L, lua_upvalueindex(2));
if (isclosed(p)) /* file is already closed? */
return luaL_error(L, "file is already closed");
lua_settop(L , 1);
for (i = 1; i <= n; i++) /* push arguments to 'g_read' */
lua_pushvalue(L, lua_upvalueindex(3 + i));
n = g_read(L, p->f, 2); /* 'n' is number of results */
lua_assert(n > 0); /* should return at least a nil */
if (!lua_isnil(L, -n)) /* read at least one value? */
return n; /* return them */
else { /* first result is nil: EOF or error */
if (n > 1) { /* is there error information? */
/* 2nd result is error message */
return luaL_error(L, "%s", lua_tostring(L, -n + 1));
}
if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */
lua_settop(L, 0);
lua_pushvalue(L, lua_upvalueindex(1));
aux_close(L); /* close it */
}
return 0;
}
}
/* }====================================================== */
static int g_write (lua_State *L, FILE *f, int arg) {
int nargs = lua_gettop(L) - arg;
int status = 1;
for (; nargs--; arg++) {
if (lua_type(L, arg) == LUA_TNUMBER) {
/* optimization: could be done exactly as for strings */
status = status &&
fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
}
else {
size_t l;
const char *s = luaL_checklstring(L, arg, &l);
status = status && (fwrite(s, sizeof(char), l, f) == l);
}
}
if (status) return 1; /* file handle already on stack top */
else return luaL_fileresult(L, status, NULL);
}
static int io_write (lua_State *L) {
return g_write(L, getiofile(L, IO_OUTPUT), 1);
}
static int f_write (lua_State *L) {
FILE *f = tofile(L);
lua_pushvalue(L, 1); /* push file at the stack top (to be returned) */
return g_write(L, f, 2);
}
static int f_seek (lua_State *L) {
static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
static const char *const modenames[] = {"set", "cur", "end", NULL};
FILE *f = tofile(L);
int op = luaL_checkoption(L, 2, "cur", modenames);
lua_Number p3 = luaL_optnumber(L, 3, 0);
l_seeknum offset = (l_seeknum)p3;
luaL_argcheck(L, (lua_Number)offset == p3, 3,
"not an integer in proper range");
op = l_fseek(f, offset, mode[op]);
if (op)
return luaL_fileresult(L, 0, NULL); /* error */
else {
lua_pushnumber(L, (lua_Number)l_ftell(f));
return 1;
}
}
static int f_setvbuf (lua_State *L) {
static const int mode[] = {_IONBF, _IOFBF, _IOLBF};
static const char *const modenames[] = {"no", "full", "line", NULL};
FILE *f = tofile(L);
int op = luaL_checkoption(L, 2, NULL, modenames);
lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
int res = setvbuf(f, NULL, mode[op], sz);
return luaL_fileresult(L, res == 0, NULL);
}
static int io_flush (lua_State *L) {
return luaL_fileresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL);
}
static int f_flush (lua_State *L) {
return luaL_fileresult(L, fflush(tofile(L)) == 0, NULL);
}
/*
** functions for 'io' library
*/
static const luaL_Reg iolib[] = {
{"close", io_close},
{"flush", io_flush},
{"input", io_input},
{"lines", io_lines},
{"open", io_open},
{"output", io_output},
{"popen", io_popen},
{"read", io_read},
{"tmpfile", io_tmpfile},
{"type", io_type},
{"write", io_write},
{NULL, NULL}
};
/*
** methods for file handles
*/
static const luaL_Reg flib[] = {
{"close", io_close},
{"flush", f_flush},
{"lines", f_lines},
{"read", f_read},
{"seek", f_seek},
{"setvbuf", f_setvbuf},
{"write", f_write},
{"__gc", f_gc},
{"__tostring", f_tostring},
{NULL, NULL}
};
static void createmeta (lua_State *L) {
luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */
lua_pushvalue(L, -1); /* push metatable */
lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */
luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */
lua_pop(L, 1); /* pop new metatable */
}
/*
** function to (not) close the standard files stdin, stdout, and stderr
*/
static int io_noclose (lua_State *L) {
LStream *p = tolstream(L);
p->closef = &io_noclose; /* keep file opened */
lua_pushnil(L);
lua_pushliteral(L, "cannot close standard file");
return 2;
}
static void createstdfile (lua_State *L, FILE *f, const char *k,
const char *fname) {
LStream *p = newprefile(L);
p->f = f;
p->closef = &io_noclose;
if (k != NULL) {
lua_pushvalue(L, -1);
lua_setfield(L, LUA_REGISTRYINDEX, k); /* add file to registry */
}
lua_setfield(L, -2, fname); /* add file to module */
}
LUAMOD_API int luaopen_io (lua_State *L) {
luaL_newlib(L, iolib); /* new module */
createmeta(L);
/* create (and set) default files */
createstdfile(L, stdin, IO_INPUT, "stdin");
createstdfile(L, stdout, IO_OUTPUT, "stdout");
createstdfile(L, stderr, NULL, "stderr");
return 1;
}

View File

@ -0,0 +1,530 @@
/*
** $Id: llex.c,v 2.63.1.2 2013/08/30 15:49:41 roberto Exp $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
#include <locale.h>
#include <string.h>
#define llex_c
#define LUA_CORE
#include "lua.h"
#include "lctype.h"
#include "ldo.h"
#include "llex.h"
#include "lobject.h"
#include "lparser.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "lzio.h"
#define next(ls) (ls->current = zgetc(ls->z))
#define currIsNewline(ls) (ls->current == '\n' || ls->current == '\r')
/* ORDER RESERVED */
static const char *const luaX_tokens [] = {
"and", "break", "do", "else", "elseif",
"end", "false", "for", "function", "goto", "if",
"in", "local", "nil", "not", "or", "repeat",
"return", "then", "true", "until", "while",
"..", "...", "==", ">=", "<=", "~=", "::", "<eof>",
"<number>", "<name>", "<string>"
};
#define save_and_next(ls) (save(ls, ls->current), next(ls))
static l_noret lexerror (LexState *ls, const char *msg, int token);
static void save (LexState *ls, int c) {
Mbuffer *b = ls->buff;
if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
size_t newsize;
if (luaZ_sizebuffer(b) >= MAX_SIZET/2)
lexerror(ls, "lexical element too long", 0);
newsize = luaZ_sizebuffer(b) * 2;
luaZ_resizebuffer(ls->L, b, newsize);
}
b->buffer[luaZ_bufflen(b)++] = cast(char, c);
}
void luaX_init (lua_State *L) {
int i;
for (i=0; i<NUM_RESERVED; i++) {
TString *ts = luaS_new(L, luaX_tokens[i]);
luaS_fix(ts); /* reserved words are never collected */
ts->tsv.extra = cast_byte(i+1); /* reserved word */
}
}
const char *luaX_token2str (LexState *ls, int token) {
if (token < FIRST_RESERVED) { /* single-byte symbols? */
lua_assert(token == cast(unsigned char, token));
return (lisprint(token)) ? luaO_pushfstring(ls->L, LUA_QL("%c"), token) :
luaO_pushfstring(ls->L, "char(%d)", token);
}
else {
const char *s = luaX_tokens[token - FIRST_RESERVED];
if (token < TK_EOS) /* fixed format (symbols and reserved words)? */
return luaO_pushfstring(ls->L, LUA_QS, s);
else /* names, strings, and numerals */
return s;
}
}
static const char *txtToken (LexState *ls, int token) {
switch (token) {
case TK_NAME:
case TK_STRING:
case TK_NUMBER:
save(ls, '\0');
return luaO_pushfstring(ls->L, LUA_QS, luaZ_buffer(ls->buff));
default:
return luaX_token2str(ls, token);
}
}
static l_noret lexerror (LexState *ls, const char *msg, int token) {
char buff[LUA_IDSIZE];
luaO_chunkid(buff, getstr(ls->source), LUA_IDSIZE);
msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg);
if (token)
luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
luaD_throw(ls->L, LUA_ERRSYNTAX);
}
l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
lexerror(ls, msg, ls->t.token);
}
/*
** creates a new string and anchors it in function's table so that
** it will not be collected until the end of the function's compilation
** (by that time it should be anchored in function's prototype)
*/
TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
lua_State *L = ls->L;
TValue *o; /* entry for `str' */
TString *ts = luaS_newlstr(L, str, l); /* create new string */
setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */
o = luaH_set(L, ls->fs->h, L->top - 1);
if (ttisnil(o)) { /* not in use yet? (see 'addK') */
/* boolean value does not need GC barrier;
table has no metatable, so it does not need to invalidate cache */
setbvalue(o, 1); /* t[string] = true */
luaC_checkGC(L);
}
else { /* string already present */
ts = rawtsvalue(keyfromval(o)); /* re-use value previously stored */
}
L->top--; /* remove string from stack */
return ts;
}
/*
** increment line number and skips newline sequence (any of
** \n, \r, \n\r, or \r\n)
*/
static void inclinenumber (LexState *ls) {
int old = ls->current;
lua_assert(currIsNewline(ls));
next(ls); /* skip `\n' or `\r' */
if (currIsNewline(ls) && ls->current != old)
next(ls); /* skip `\n\r' or `\r\n' */
if (++ls->linenumber >= MAX_INT)
luaX_syntaxerror(ls, "chunk has too many lines");
}
void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
int firstchar) {
ls->decpoint = '.';
ls->L = L;
ls->current = firstchar;
ls->lookahead.token = TK_EOS; /* no look-ahead token */
ls->z = z;
ls->fs = NULL;
ls->linenumber = 1;
ls->lastline = 1;
ls->source = source;
ls->envn = luaS_new(L, LUA_ENV); /* create env name */
luaS_fix(ls->envn); /* never collect this name */
luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER); /* initialize buffer */
}
/*
** =======================================================
** LEXICAL ANALYZER
** =======================================================
*/
static int check_next (LexState *ls, const char *set) {
if (ls->current == '\0' || !strchr(set, ls->current))
return 0;
save_and_next(ls);
return 1;
}
/*
** change all characters 'from' in buffer to 'to'
*/
static void buffreplace (LexState *ls, char from, char to) {
size_t n = luaZ_bufflen(ls->buff);
char *p = luaZ_buffer(ls->buff);
while (n--)
if (p[n] == from) p[n] = to;
}
#if !defined(getlocaledecpoint)
#define getlocaledecpoint() (localeconv()->decimal_point[0])
#endif
#define buff2d(b,e) luaO_str2d(luaZ_buffer(b), luaZ_bufflen(b) - 1, e)
/*
** in case of format error, try to change decimal point separator to
** the one defined in the current locale and check again
*/
static void trydecpoint (LexState *ls, SemInfo *seminfo) {
char old = ls->decpoint;
ls->decpoint = getlocaledecpoint();
buffreplace(ls, old, ls->decpoint); /* try new decimal separator */
if (!buff2d(ls->buff, &seminfo->r)) {
/* format error with correct decimal point: no more options */
buffreplace(ls, ls->decpoint, '.'); /* undo change (for error message) */
lexerror(ls, "malformed number", TK_NUMBER);
}
}
/* LUA_NUMBER */
/*
** this function is quite liberal in what it accepts, as 'luaO_str2d'
** will reject ill-formed numerals.
*/
static void read_numeral (LexState *ls, SemInfo *seminfo) {
const char *expo = "Ee";
int first = ls->current;
lua_assert(lisdigit(ls->current));
save_and_next(ls);
if (first == '0' && check_next(ls, "Xx")) /* hexadecimal? */
expo = "Pp";
for (;;) {
if (check_next(ls, expo)) /* exponent part? */
check_next(ls, "+-"); /* optional exponent sign */
if (lisxdigit(ls->current) || ls->current == '.')
save_and_next(ls);
else break;
}
save(ls, '\0');
buffreplace(ls, '.', ls->decpoint); /* follow locale for decimal point */
if (!buff2d(ls->buff, &seminfo->r)) /* format error? */
trydecpoint(ls, seminfo); /* try to update decimal point separator */
}
/*
** skip a sequence '[=*[' or ']=*]' and return its number of '='s or
** -1 if sequence is malformed
*/
static int skip_sep (LexState *ls) {
int count = 0;
int s = ls->current;
lua_assert(s == '[' || s == ']');
save_and_next(ls);
while (ls->current == '=') {
save_and_next(ls);
count++;
}
return (ls->current == s) ? count : (-count) - 1;
}
static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
save_and_next(ls); /* skip 2nd `[' */
if (currIsNewline(ls)) /* string starts with a newline? */
inclinenumber(ls); /* skip it */
for (;;) {
switch (ls->current) {
case EOZ:
lexerror(ls, (seminfo) ? "unfinished long string" :
"unfinished long comment", TK_EOS);
break; /* to avoid warnings */
case ']': {
if (skip_sep(ls) == sep) {
save_and_next(ls); /* skip 2nd `]' */
goto endloop;
}
break;
}
case '\n': case '\r': {
save(ls, '\n');
inclinenumber(ls);
if (!seminfo) luaZ_resetbuffer(ls->buff); /* avoid wasting space */
break;
}
default: {
if (seminfo) save_and_next(ls);
else next(ls);
}
}
} endloop:
if (seminfo)
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep),
luaZ_bufflen(ls->buff) - 2*(2 + sep));
}
static void escerror (LexState *ls, int *c, int n, const char *msg) {
int i;
luaZ_resetbuffer(ls->buff); /* prepare error message */
save(ls, '\\');
for (i = 0; i < n && c[i] != EOZ; i++)
save(ls, c[i]);
lexerror(ls, msg, TK_STRING);
}
static int readhexaesc (LexState *ls) {
int c[3], i; /* keep input for error message */
int r = 0; /* result accumulator */
c[0] = 'x'; /* for error message */
for (i = 1; i < 3; i++) { /* read two hexadecimal digits */
c[i] = next(ls);
if (!lisxdigit(c[i]))
escerror(ls, c, i + 1, "hexadecimal digit expected");
r = (r << 4) + luaO_hexavalue(c[i]);
}
return r;
}
static int readdecesc (LexState *ls) {
int c[3], i;
int r = 0; /* result accumulator */
for (i = 0; i < 3 && lisdigit(ls->current); i++) { /* read up to 3 digits */
c[i] = ls->current;
r = 10*r + c[i] - '0';
next(ls);
}
if (r > UCHAR_MAX)
escerror(ls, c, i, "decimal escape too large");
return r;
}
static void read_string (LexState *ls, int del, SemInfo *seminfo) {
save_and_next(ls); /* keep delimiter (for error messages) */
while (ls->current != del) {
switch (ls->current) {
case EOZ:
lexerror(ls, "unfinished string", TK_EOS);
break; /* to avoid warnings */
case '\n':
case '\r':
lexerror(ls, "unfinished string", TK_STRING);
break; /* to avoid warnings */
case '\\': { /* escape sequences */
int c; /* final character to be saved */
next(ls); /* do not save the `\' */
switch (ls->current) {
case 'a': c = '\a'; goto read_save;
case 'b': c = '\b'; goto read_save;
case 'f': c = '\f'; goto read_save;
case 'n': c = '\n'; goto read_save;
case 'r': c = '\r'; goto read_save;
case 't': c = '\t'; goto read_save;
case 'v': c = '\v'; goto read_save;
case 'x': c = readhexaesc(ls); goto read_save;
case '\n': case '\r':
inclinenumber(ls); c = '\n'; goto only_save;
case '\\': case '\"': case '\'':
c = ls->current; goto read_save;
case EOZ: goto no_save; /* will raise an error next loop */
case 'z': { /* zap following span of spaces */
next(ls); /* skip the 'z' */
while (lisspace(ls->current)) {
if (currIsNewline(ls)) inclinenumber(ls);
else next(ls);
}
goto no_save;
}
default: {
if (!lisdigit(ls->current))
escerror(ls, &ls->current, 1, "invalid escape sequence");
/* digital escape \ddd */
c = readdecesc(ls);
goto only_save;
}
}
read_save: next(ls); /* read next character */
only_save: save(ls, c); /* save 'c' */
no_save: break;
}
default:
save_and_next(ls);
}
}
save_and_next(ls); /* skip delimiter */
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + 1,
luaZ_bufflen(ls->buff) - 2);
}
static int llex (LexState *ls, SemInfo *seminfo) {
luaZ_resetbuffer(ls->buff);
for (;;) {
switch (ls->current) {
case '\n': case '\r': { /* line breaks */
inclinenumber(ls);
break;
}
case ' ': case '\f': case '\t': case '\v': { /* spaces */
next(ls);
break;
}
case '-': { /* '-' or '--' (comment) */
next(ls);
if (ls->current != '-') return '-';
/* else is a comment */
next(ls);
if (ls->current == '[') { /* long comment? */
int sep = skip_sep(ls);
luaZ_resetbuffer(ls->buff); /* `skip_sep' may dirty the buffer */
if (sep >= 0) {
read_long_string(ls, NULL, sep); /* skip long comment */
luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */
break;
}
}
/* else short comment */
while (!currIsNewline(ls) && ls->current != EOZ)
next(ls); /* skip until end of line (or end of file) */
break;
}
case '[': { /* long string or simply '[' */
int sep = skip_sep(ls);
if (sep >= 0) {
read_long_string(ls, seminfo, sep);
return TK_STRING;
}
else if (sep == -1) return '[';
else lexerror(ls, "invalid long string delimiter", TK_STRING);
}
case '=': {
next(ls);
if (ls->current != '=') return '=';
else { next(ls); return TK_EQ; }
}
case '<': {
next(ls);
if (ls->current != '=') return '<';
else { next(ls); return TK_LE; }
}
case '>': {
next(ls);
if (ls->current != '=') return '>';
else { next(ls); return TK_GE; }
}
case '~': {
next(ls);
if (ls->current != '=') return '~';
else { next(ls); return TK_NE; }
}
case ':': {
next(ls);
if (ls->current != ':') return ':';
else { next(ls); return TK_DBCOLON; }
}
case '"': case '\'': { /* short literal strings */
read_string(ls, ls->current, seminfo);
return TK_STRING;
}
case '.': { /* '.', '..', '...', or number */
save_and_next(ls);
if (check_next(ls, ".")) {
if (check_next(ls, "."))
return TK_DOTS; /* '...' */
else return TK_CONCAT; /* '..' */
}
else if (!lisdigit(ls->current)) return '.';
/* else go through */
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': {
read_numeral(ls, seminfo);
return TK_NUMBER;
}
case EOZ: {
return TK_EOS;
}
default: {
if (lislalpha(ls->current)) { /* identifier or reserved word? */
TString *ts;
do {
save_and_next(ls);
} while (lislalnum(ls->current));
ts = luaX_newstring(ls, luaZ_buffer(ls->buff),
luaZ_bufflen(ls->buff));
seminfo->ts = ts;
if (isreserved(ts)) /* reserved word? */
return ts->tsv.extra - 1 + FIRST_RESERVED;
else {
return TK_NAME;
}
}
else { /* single-char tokens (+ - / ...) */
int c = ls->current;
next(ls);
return c;
}
}
}
}
}
void luaX_next (LexState *ls) {
ls->lastline = ls->linenumber;
if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
ls->t = ls->lookahead; /* use this one */
ls->lookahead.token = TK_EOS; /* and discharge it */
}
else
ls->t.token = llex(ls, &ls->t.seminfo); /* read next token */
}
int luaX_lookahead (LexState *ls) {
lua_assert(ls->lookahead.token == TK_EOS);
ls->lookahead.token = llex(ls, &ls->lookahead.seminfo);
return ls->lookahead.token;
}

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/*
** $Id: llex.h,v 1.72.1.1 2013/04/12 18:48:47 roberto Exp $
** Lexical Analyzer
** See Copyright Notice in lua.h
*/
#ifndef llex_h
#define llex_h
#include "lobject.h"
#include "lzio.h"
#define FIRST_RESERVED 257
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER RESERVED"
*/
enum RESERVED {
/* terminal symbols denoted by reserved words */
TK_AND = FIRST_RESERVED, TK_BREAK,
TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
/* other terminal symbols */
TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_DBCOLON, TK_EOS,
TK_NUMBER, TK_NAME, TK_STRING
};
/* number of reserved words */
#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
typedef union {
lua_Number r;
TString *ts;
} SemInfo; /* semantics information */
typedef struct Token {
int token;
SemInfo seminfo;
} Token;
/* state of the lexer plus state of the parser when shared by all
functions */
typedef struct LexState {
int current; /* current character (charint) */
int linenumber; /* input line counter */
int lastline; /* line of last token `consumed' */
Token t; /* current token */
Token lookahead; /* look ahead token */
struct FuncState *fs; /* current function (parser) */
struct lua_State *L;
ZIO *z; /* input stream */
Mbuffer *buff; /* buffer for tokens */
struct Dyndata *dyd; /* dynamic structures used by the parser */
TString *source; /* current source name */
TString *envn; /* environment variable name */
char decpoint; /* locale decimal point */
} LexState;
LUAI_FUNC void luaX_init (lua_State *L);
LUAI_FUNC void luaX_setinput (lua_State *L, LexState *ls, ZIO *z,
TString *source, int firstchar);
LUAI_FUNC TString *luaX_newstring (LexState *ls, const char *str, size_t l);
LUAI_FUNC void luaX_next (LexState *ls);
LUAI_FUNC int luaX_lookahead (LexState *ls);
LUAI_FUNC l_noret luaX_syntaxerror (LexState *ls, const char *s);
LUAI_FUNC const char *luaX_token2str (LexState *ls, int token);
#endif

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/*
** $Id: llimits.h,v 1.103.1.1 2013/04/12 18:48:47 roberto Exp $
** Limits, basic types, and some other `installation-dependent' definitions
** See Copyright Notice in lua.h
*/
#ifndef llimits_h
#define llimits_h
#include <limits.h>
#include <stddef.h>
#include "lua.h"
typedef unsigned LUA_INT32 lu_int32;
typedef LUAI_UMEM lu_mem;
typedef LUAI_MEM l_mem;
/* chars used as small naturals (so that `char' is reserved for characters) */
typedef unsigned char lu_byte;
#define MAX_SIZET ((size_t)(~(size_t)0)-2)
#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)-2)
#define MAX_LMEM ((l_mem) ((MAX_LUMEM >> 1) - 2))
#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */
/*
** conversion of pointer to integer
** this is for hashing only; there is no problem if the integer
** cannot hold the whole pointer value
*/
#define IntPoint(p) ((unsigned int)(lu_mem)(p))
/* type to ensure maximum alignment */
#if !defined(LUAI_USER_ALIGNMENT_T)
#define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; }
#endif
typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
/* result of a `usual argument conversion' over lua_Number */
typedef LUAI_UACNUMBER l_uacNumber;
/* internal assertions for in-house debugging */
#if defined(lua_assert)
#define check_exp(c,e) (lua_assert(c), (e))
/* to avoid problems with conditions too long */
#define lua_longassert(c) { if (!(c)) lua_assert(0); }
#else
#define lua_assert(c) ((void)0)
#define check_exp(c,e) (e)
#define lua_longassert(c) ((void)0)
#endif
/*
** assertion for checking API calls
*/
#if !defined(luai_apicheck)
#if defined(LUA_USE_APICHECK)
#include <assert.h>
#define luai_apicheck(L,e) assert(e)
#else
#define luai_apicheck(L,e) lua_assert(e)
#endif
#endif
#define api_check(l,e,msg) luai_apicheck(l,(e) && msg)
#if !defined(UNUSED)
#define UNUSED(x) ((void)(x)) /* to avoid warnings */
#endif
#define cast(t, exp) ((t)(exp))
#define cast_byte(i) cast(lu_byte, (i))
#define cast_num(i) cast(lua_Number, (i))
#define cast_int(i) cast(int, (i))
#define cast_uchar(i) cast(unsigned char, (i))
/*
** non-return type
*/
#if defined(__GNUC__)
#define l_noret void __attribute__((noreturn))
#elif defined(_MSC_VER)
#define l_noret void __declspec(noreturn)
#else
#define l_noret void
#endif
/*
** maximum depth for nested C calls and syntactical nested non-terminals
** in a program. (Value must fit in an unsigned short int.)
*/
#if !defined(LUAI_MAXCCALLS)
#define LUAI_MAXCCALLS 200
#endif
/*
** maximum number of upvalues in a closure (both C and Lua). (Value
** must fit in an unsigned char.)
*/
#define MAXUPVAL UCHAR_MAX
/*
** type for virtual-machine instructions
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
*/
typedef lu_int32 Instruction;
/* maximum stack for a Lua function */
#define MAXSTACK 250
/* minimum size for the string table (must be power of 2) */
#if !defined(MINSTRTABSIZE)
#define MINSTRTABSIZE 32
#endif
/* minimum size for string buffer */
#if !defined(LUA_MINBUFFER)
#define LUA_MINBUFFER 32
#endif
#if !defined(lua_lock)
#define lua_lock(L) ((void) 0)
#define lua_unlock(L) ((void) 0)
#endif
#if !defined(luai_threadyield)
#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);}
#endif
/*
** these macros allow user-specific actions on threads when you defined
** LUAI_EXTRASPACE and need to do something extra when a thread is
** created/deleted/resumed/yielded.
*/
#if !defined(luai_userstateopen)
#define luai_userstateopen(L) ((void)L)
#endif
#if !defined(luai_userstateclose)
#define luai_userstateclose(L) ((void)L)
#endif
#if !defined(luai_userstatethread)
#define luai_userstatethread(L,L1) ((void)L)
#endif
#if !defined(luai_userstatefree)
#define luai_userstatefree(L,L1) ((void)L)
#endif
#if !defined(luai_userstateresume)
#define luai_userstateresume(L,n) ((void)L)
#endif
#if !defined(luai_userstateyield)
#define luai_userstateyield(L,n) ((void)L)
#endif
/*
** lua_number2int is a macro to convert lua_Number to int.
** lua_number2integer is a macro to convert lua_Number to lua_Integer.
** lua_number2unsigned is a macro to convert a lua_Number to a lua_Unsigned.
** lua_unsigned2number is a macro to convert a lua_Unsigned to a lua_Number.
** luai_hashnum is a macro to hash a lua_Number value into an integer.
** The hash must be deterministic and give reasonable values for
** both small and large values (outside the range of integers).
*/
#if defined(MS_ASMTRICK) || defined(LUA_MSASMTRICK) /* { */
/* trick with Microsoft assembler for X86 */
#define lua_number2int(i,n) __asm {__asm fld n __asm fistp i}
#define lua_number2integer(i,n) lua_number2int(i, n)
#define lua_number2unsigned(i,n) \
{__int64 l; __asm {__asm fld n __asm fistp l} i = (unsigned int)l;}
#elif defined(LUA_IEEE754TRICK) /* }{ */
/* the next trick should work on any machine using IEEE754 with
a 32-bit int type */
union luai_Cast { double l_d; LUA_INT32 l_p[2]; };
#if !defined(LUA_IEEEENDIAN) /* { */
#define LUAI_EXTRAIEEE \
static const union luai_Cast ieeeendian = {-(33.0 + 6755399441055744.0)};
#define LUA_IEEEENDIANLOC (ieeeendian.l_p[1] == 33)
#else
#define LUA_IEEEENDIANLOC LUA_IEEEENDIAN
#define LUAI_EXTRAIEEE /* empty */
#endif /* } */
#define lua_number2int32(i,n,t) \
{ LUAI_EXTRAIEEE \
volatile union luai_Cast u; u.l_d = (n) + 6755399441055744.0; \
(i) = (t)u.l_p[LUA_IEEEENDIANLOC]; }
#define luai_hashnum(i,n) \
{ volatile union luai_Cast u; u.l_d = (n) + 1.0; /* avoid -0 */ \
(i) = u.l_p[0]; (i) += u.l_p[1]; } /* add double bits for his hash */
#define lua_number2int(i,n) lua_number2int32(i, n, int)
#define lua_number2unsigned(i,n) lua_number2int32(i, n, lua_Unsigned)
/* the trick can be expanded to lua_Integer when it is a 32-bit value */
#if defined(LUA_IEEELL)
#define lua_number2integer(i,n) lua_number2int32(i, n, lua_Integer)
#endif
#endif /* } */
/* the following definitions always work, but may be slow */
#if !defined(lua_number2int)
#define lua_number2int(i,n) ((i)=(int)(n))
#endif
#if !defined(lua_number2integer)
#define lua_number2integer(i,n) ((i)=(lua_Integer)(n))
#endif
#if !defined(lua_number2unsigned) /* { */
/* the following definition assures proper modulo behavior */
#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_NUMBER_FLOAT)
#include <math.h>
#define SUPUNSIGNED ((lua_Number)(~(lua_Unsigned)0) + 1)
#define lua_number2unsigned(i,n) \
((i)=(lua_Unsigned)((n) - floor((n)/SUPUNSIGNED)*SUPUNSIGNED))
#else
#define lua_number2unsigned(i,n) ((i)=(lua_Unsigned)(n))
#endif
#endif /* } */
#if !defined(lua_unsigned2number)
/* on several machines, coercion from unsigned to double is slow,
so it may be worth to avoid */
#define lua_unsigned2number(u) \
(((u) <= (lua_Unsigned)INT_MAX) ? (lua_Number)(int)(u) : (lua_Number)(u))
#endif
#if defined(ltable_c) && !defined(luai_hashnum)
#include <float.h>
#include <math.h>
#define luai_hashnum(i,n) { int e; \
n = l_mathop(frexp)(n, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP); \
lua_number2int(i, n); i += e; }
#endif
/*
** macro to control inclusion of some hard tests on stack reallocation
*/
#if !defined(HARDSTACKTESTS)
#define condmovestack(L) ((void)0)
#else
/* realloc stack keeping its size */
#define condmovestack(L) luaD_reallocstack((L), (L)->stacksize)
#endif
#if !defined(HARDMEMTESTS)
#define condchangemem(L) condmovestack(L)
#else
#define condchangemem(L) \
((void)(!(G(L)->gcrunning) || (luaC_fullgc(L, 0), 1)))
#endif
#endif

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/*
** $Id: lmathlib.c,v 1.83.1.1 2013/04/12 18:48:47 roberto Exp $
** Standard mathematical library
** See Copyright Notice in lua.h
*/
#include <stdlib.h>
#include <math.h>
#define lmathlib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#undef PI
#define PI ((lua_Number)(3.1415926535897932384626433832795))
#define RADIANS_PER_DEGREE ((lua_Number)(PI/180.0))
static int math_abs (lua_State *L) {
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sin (lua_State *L) {
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sinh (lua_State *L) {
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_cos (lua_State *L) {
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_cosh (lua_State *L) {
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tan (lua_State *L) {
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tanh (lua_State *L) {
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_asin (lua_State *L) {
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_acos (lua_State *L) {
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_atan (lua_State *L) {
lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1)));
return 1;
}
static int math_atan2 (lua_State *L) {
lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
}
static int math_ceil (lua_State *L) {
lua_pushnumber(L, l_mathop(ceil)(luaL_checknumber(L, 1)));
return 1;
}
static int math_floor (lua_State *L) {
lua_pushnumber(L, l_mathop(floor)(luaL_checknumber(L, 1)));
return 1;
}
static int math_fmod (lua_State *L) {
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
}
static int math_modf (lua_State *L) {
lua_Number ip;
lua_Number fp = l_mathop(modf)(luaL_checknumber(L, 1), &ip);
lua_pushnumber(L, ip);
lua_pushnumber(L, fp);
return 2;
}
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
return 1;
}
static int math_pow (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number y = luaL_checknumber(L, 2);
lua_pushnumber(L, l_mathop(pow)(x, y));
return 1;
}
static int math_log (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number res;
if (lua_isnoneornil(L, 2))
res = l_mathop(log)(x);
else {
lua_Number base = luaL_checknumber(L, 2);
if (base == (lua_Number)10.0) res = l_mathop(log10)(x);
else res = l_mathop(log)(x)/l_mathop(log)(base);
}
lua_pushnumber(L, res);
return 1;
}
#if defined(LUA_COMPAT_LOG10)
static int math_log10 (lua_State *L) {
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
return 1;
}
#endif
static int math_exp (lua_State *L) {
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
return 1;
}
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE);
return 1;
}
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE);
return 1;
}
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
lua_pushinteger(L, e);
return 2;
}
static int math_ldexp (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
int ep = luaL_checkint(L, 2);
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
return 1;
}
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
lua_Number dmin = luaL_checknumber(L, 1);
int i;
for (i=2; i<=n; i++) {
lua_Number d = luaL_checknumber(L, i);
if (d < dmin)
dmin = d;
}
lua_pushnumber(L, dmin);
return 1;
}
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
lua_Number dmax = luaL_checknumber(L, 1);
int i;
for (i=2; i<=n; i++) {
lua_Number d = luaL_checknumber(L, i);
if (d > dmax)
dmax = d;
}
lua_pushnumber(L, dmax);
return 1;
}
static int math_random (lua_State *L) {
/* the `%' avoids the (rare) case of r==1, and is needed also because on
some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, r); /* Number between 0 and 1 */
break;
}
case 1: { /* only upper limit */
lua_Number u = luaL_checknumber(L, 1);
luaL_argcheck(L, (lua_Number)1.0 <= u, 1, "interval is empty");
lua_pushnumber(L, l_mathop(floor)(r*u) + (lua_Number)(1.0)); /* [1, u] */
break;
}
case 2: { /* lower and upper limits */
lua_Number l = luaL_checknumber(L, 1);
lua_Number u = luaL_checknumber(L, 2);
luaL_argcheck(L, l <= u, 2, "interval is empty");
lua_pushnumber(L, l_mathop(floor)(r*(u-l+1)) + l); /* [l, u] */
break;
}
default: return luaL_error(L, "wrong number of arguments");
}
return 1;
}
static int math_randomseed (lua_State *L) {
srand(luaL_checkunsigned(L, 1));
(void)rand(); /* discard first value to avoid undesirable correlations */
return 0;
}
static const luaL_Reg mathlib[] = {
{"abs", math_abs},
{"acos", math_acos},
{"asin", math_asin},
{"atan2", math_atan2},
{"atan", math_atan},
{"ceil", math_ceil},
{"cosh", math_cosh},
{"cos", math_cos},
{"deg", math_deg},
{"exp", math_exp},
{"floor", math_floor},
{"fmod", math_fmod},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
#if defined(LUA_COMPAT_LOG10)
{"log10", math_log10},
#endif
{"log", math_log},
{"max", math_max},
{"min", math_min},
{"modf", math_modf},
{"pow", math_pow},
{"rad", math_rad},
{"random", math_random},
{"randomseed", math_randomseed},
{"sinh", math_sinh},
{"sin", math_sin},
{"sqrt", math_sqrt},
{"tanh", math_tanh},
{"tan", math_tan},
{NULL, NULL}
};
/*
** Open math library
*/
LUAMOD_API int luaopen_math (lua_State *L) {
luaL_newlib(L, mathlib);
lua_pushnumber(L, PI);
lua_setfield(L, -2, "pi");
lua_pushnumber(L, HUGE_VAL);
lua_setfield(L, -2, "huge");
return 1;
}

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/*
** $Id: lmem.c,v 1.84.1.1 2013/04/12 18:48:47 roberto Exp $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#define lmem_c
#define LUA_CORE
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
/*
** About the realloc function:
** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
** (`osize' is the old size, `nsize' is the new size)
**
** * frealloc(ud, NULL, x, s) creates a new block of size `s' (no
** matter 'x').
**
** * frealloc(ud, p, x, 0) frees the block `p'
** (in this specific case, frealloc must return NULL);
** particularly, frealloc(ud, NULL, 0, 0) does nothing
** (which is equivalent to free(NULL) in ANSI C)
**
** frealloc returns NULL if it cannot create or reallocate the area
** (any reallocation to an equal or smaller size cannot fail!)
*/
#define MINSIZEARRAY 4
void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems,
int limit, const char *what) {
void *newblock;
int newsize;
if (*size >= limit/2) { /* cannot double it? */
if (*size >= limit) /* cannot grow even a little? */
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
newsize = limit; /* still have at least one free place */
}
else {
newsize = (*size)*2;
if (newsize < MINSIZEARRAY)
newsize = MINSIZEARRAY; /* minimum size */
}
newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
*size = newsize; /* update only when everything else is OK */
return newblock;
}
l_noret luaM_toobig (lua_State *L) {
luaG_runerror(L, "memory allocation error: block too big");
}
/*
** generic allocation routine.
*/
void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
void *newblock;
global_State *g = G(L);
size_t realosize = (block) ? osize : 0;
lua_assert((realosize == 0) == (block == NULL));
#if defined(HARDMEMTESTS)
if (nsize > realosize && g->gcrunning)
luaC_fullgc(L, 1); /* force a GC whenever possible */
#endif
newblock = (*g->frealloc)(g->ud, block, osize, nsize);
if (newblock == NULL && nsize > 0) {
api_check(L, nsize > realosize,
"realloc cannot fail when shrinking a block");
if (g->gcrunning) {
luaC_fullgc(L, 1); /* try to free some memory... */
newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */
}
if (newblock == NULL)
luaD_throw(L, LUA_ERRMEM);
}
lua_assert((nsize == 0) == (newblock == NULL));
g->GCdebt = (g->GCdebt + nsize) - realosize;
return newblock;
}

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/*
** $Id: lmem.h,v 1.40.1.1 2013/04/12 18:48:47 roberto Exp $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#ifndef lmem_h
#define lmem_h
#include <stddef.h>
#include "llimits.h"
#include "lua.h"
/*
** This macro avoids the runtime division MAX_SIZET/(e), as 'e' is
** always constant.
** The macro is somewhat complex to avoid warnings:
** +1 avoids warnings of "comparison has constant result";
** cast to 'void' avoids warnings of "value unused".
*/
#define luaM_reallocv(L,b,on,n,e) \
(cast(void, \
(cast(size_t, (n)+1) > MAX_SIZET/(e)) ? (luaM_toobig(L), 0) : 0), \
luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0)
#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0)
#define luaM_freearray(L, b, n) luaM_reallocv(L, (b), n, 0, sizeof((b)[0]))
#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s))
#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t)))
#define luaM_newvector(L,n,t) \
cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s))
#define luaM_growvector(L,v,nelems,size,t,limit,e) \
if ((nelems)+1 > (size)) \
((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
#define luaM_reallocvector(L, v,oldn,n,t) \
((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
LUAI_FUNC l_noret luaM_toobig (lua_State *L);
/* not to be called directly */
LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
size_t size_elem, int limit,
const char *what);
#endif

View File

@ -0,0 +1,725 @@
/*
** $Id: loadlib.c,v 1.111.1.1 2013/04/12 18:48:47 roberto Exp $
** Dynamic library loader for Lua
** See Copyright Notice in lua.h
**
** This module contains an implementation of loadlib for Unix systems
** that have dlfcn, an implementation for Windows, and a stub for other
** systems.
*/
/*
** if needed, includes windows header before everything else
*/
#if defined(_WIN32) && !defined(UEFI_C_SOURCE) && !defined(_DOS_WATCOM)
#include <windows.h>
#endif
#include <stdlib.h>
#include <string.h>
#define loadlib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/*
** LUA_PATH and LUA_CPATH are the names of the environment
** variables that Lua check to set its paths.
*/
#if !defined(LUA_PATH)
#define LUA_PATH "LUA_PATH"
#endif
#if !defined(LUA_CPATH)
#define LUA_CPATH "LUA_CPATH"
#endif
#define LUA_PATHSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
#define LUA_PATHVERSION LUA_PATH LUA_PATHSUFFIX
#define LUA_CPATHVERSION LUA_CPATH LUA_PATHSUFFIX
/*
** LUA_PATH_SEP is the character that separates templates in a path.
** LUA_PATH_MARK is the string that marks the substitution points in a
** template.
** LUA_EXEC_DIR in a Windows path is replaced by the executable's
** directory.
** LUA_IGMARK is a mark to ignore all before it when building the
** luaopen_ function name.
*/
#if !defined (LUA_PATH_SEP)
#define LUA_PATH_SEP ";"
#endif
#if !defined (LUA_PATH_MARK)
#define LUA_PATH_MARK "?"
#endif
#if !defined (LUA_EXEC_DIR)
#define LUA_EXEC_DIR "!"
#endif
#if !defined (LUA_IGMARK)
#define LUA_IGMARK "-"
#endif
/*
** LUA_CSUBSEP is the character that replaces dots in submodule names
** when searching for a C loader.
** LUA_LSUBSEP is the character that replaces dots in submodule names
** when searching for a Lua loader.
*/
#if !defined(LUA_CSUBSEP)
#define LUA_CSUBSEP LUA_DIRSEP
#endif
#if !defined(LUA_LSUBSEP)
#define LUA_LSUBSEP LUA_DIRSEP
#endif
/* prefix for open functions in C libraries */
#define LUA_POF "luaopen_"
/* separator for open functions in C libraries */
#define LUA_OFSEP "_"
/* table (in the registry) that keeps handles for all loaded C libraries */
#define CLIBS "_CLIBS"
#define LIB_FAIL "open"
/* error codes for ll_loadfunc */
#define ERRLIB 1
#define ERRFUNC 2
#define setprogdir(L) ((void)0)
/*
** system-dependent functions
*/
static void ll_unloadlib (void *lib);
static void *ll_load (lua_State *L, const char *path, int seeglb);
static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym);
#if defined(LUA_USE_DLOPEN)
/*
** {========================================================================
** This is an implementation of loadlib based on the dlfcn interface.
** The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD,
** NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least
** as an emulation layer on top of native functions.
** =========================================================================
*/
#include <dlfcn.h>
static void ll_unloadlib (void *lib) {
dlclose(lib);
}
static void *ll_load (lua_State *L, const char *path, int seeglb) {
void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL));
if (lib == NULL) lua_pushstring(L, dlerror());
return lib;
}
static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
lua_CFunction f = (lua_CFunction)dlsym(lib, sym);
if (f == NULL) lua_pushstring(L, dlerror());
return f;
}
/* }====================================================== */
#elif defined(LUA_DL_DLL)
/*
** {======================================================================
** This is an implementation of loadlib for Windows using native functions.
** =======================================================================
*/
#undef setprogdir
/*
** optional flags for LoadLibraryEx
*/
#if !defined(LUA_LLE_FLAGS)
#define LUA_LLE_FLAGS 0
#endif
static void setprogdir (lua_State *L) {
char buff[MAX_PATH + 1];
char *lb;
DWORD nsize = sizeof(buff)/sizeof(char);
DWORD n = GetModuleFileNameA(NULL, buff, nsize);
if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
luaL_error(L, "unable to get ModuleFileName");
else {
*lb = '\0';
luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
lua_remove(L, -2); /* remove original string */
}
}
static void pusherror (lua_State *L) {
int error = GetLastError();
char buffer[128];
if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error, 0, buffer, sizeof(buffer)/sizeof(char), NULL))
lua_pushstring(L, buffer);
else
lua_pushfstring(L, "system error %d\n", error);
}
static void ll_unloadlib (void *lib) {
FreeLibrary((HMODULE)lib);
}
static void *ll_load (lua_State *L, const char *path, int seeglb) {
HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
(void)(seeglb); /* not used: symbols are 'global' by default */
if (lib == NULL) pusherror(L);
return lib;
}
static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym);
if (f == NULL) pusherror(L);
return f;
}
/* }====================================================== */
#else
/*
** {======================================================
** Fallback for other systems
** =======================================================
*/
#undef LIB_FAIL
#define LIB_FAIL "absent"
#define DLMSG "dynamic libraries not enabled; check your Lua installation"
static void ll_unloadlib (void *lib) {
(void)(lib); /* not used */
}
static void *ll_load (lua_State *L, const char *path, int seeglb) {
(void)(path); (void)(seeglb); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
}
static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
(void)(lib); (void)(sym); /* not used */
lua_pushliteral(L, DLMSG);
return NULL;
}
/* }====================================================== */
#endif
static void *ll_checkclib (lua_State *L, const char *path) {
void *plib;
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_getfield(L, -1, path);
plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */
lua_pop(L, 2); /* pop CLIBS table and 'plib' */
return plib;
}
static void ll_addtoclib (lua_State *L, const char *path, void *plib) {
lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_pushlightuserdata(L, plib);
lua_pushvalue(L, -1);
lua_setfield(L, -3, path); /* CLIBS[path] = plib */
lua_rawseti(L, -2, luaL_len(L, -2) + 1); /* CLIBS[#CLIBS + 1] = plib */
lua_pop(L, 1); /* pop CLIBS table */
}
/*
** __gc tag method for CLIBS table: calls 'll_unloadlib' for all lib
** handles in list CLIBS
*/
static int gctm (lua_State *L) {
int n = luaL_len(L, 1);
for (; n >= 1; n--) { /* for each handle, in reverse order */
lua_rawgeti(L, 1, n); /* get handle CLIBS[n] */
ll_unloadlib(lua_touserdata(L, -1));
lua_pop(L, 1); /* pop handle */
}
return 0;
}
static int ll_loadfunc (lua_State *L, const char *path, const char *sym) {
void *reg = ll_checkclib(L, path); /* check loaded C libraries */
if (reg == NULL) { /* must load library? */
reg = ll_load(L, path, *sym == '*');
if (reg == NULL) return ERRLIB; /* unable to load library */
ll_addtoclib(L, path, reg);
}
if (*sym == '*') { /* loading only library (no function)? */
lua_pushboolean(L, 1); /* return 'true' */
return 0; /* no errors */
}
else {
lua_CFunction f = ll_sym(L, reg, sym);
if (f == NULL)
return ERRFUNC; /* unable to find function */
lua_pushcfunction(L, f); /* else create new function */
return 0; /* no errors */
}
}
static int ll_loadlib (lua_State *L) {
const char *path = luaL_checkstring(L, 1);
const char *init = luaL_checkstring(L, 2);
int stat = ll_loadfunc(L, path, init);
if (stat == 0) /* no errors? */
return 1; /* return the loaded function */
else { /* error; error message is on stack top */
lua_pushnil(L);
lua_insert(L, -2);
lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init");
return 3; /* return nil, error message, and where */
}
}
/*
** {======================================================
** 'require' function
** =======================================================
*/
static int readable (const char *filename) {
FILE *f = fopen(filename, "r"); /* try to open file */
if (f == NULL) return 0; /* open failed */
fclose(f);
return 1;
}
static const char *pushnexttemplate (lua_State *L, const char *path) {
const char *l;
while (*path == *LUA_PATH_SEP) path++; /* skip separators */
if (*path == '\0') return NULL; /* no more templates */
l = strchr(path, *LUA_PATH_SEP); /* find next separator */
if (l == NULL) l = path + strlen(path);
lua_pushlstring(L, path, l - path); /* template */
return l;
}
static const char *searchpath (lua_State *L, const char *name,
const char *path,
const char *sep,
const char *dirsep) {
luaL_Buffer msg; /* to build error message */
luaL_buffinit(L, &msg);
if (*sep != '\0') /* non-empty separator? */
name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */
while ((path = pushnexttemplate(L, path)) != NULL) {
const char *filename = luaL_gsub(L, lua_tostring(L, -1),
LUA_PATH_MARK, name);
lua_remove(L, -2); /* remove path template */
if (readable(filename)) /* does file exist and is readable? */
return filename; /* return that file name */
lua_pushfstring(L, "\n\tno file " LUA_QS, filename);
lua_remove(L, -2); /* remove file name */
luaL_addvalue(&msg); /* concatenate error msg. entry */
}
luaL_pushresult(&msg); /* create error message */
return NULL; /* not found */
}
static int ll_searchpath (lua_State *L) {
const char *f = searchpath(L, luaL_checkstring(L, 1),
luaL_checkstring(L, 2),
luaL_optstring(L, 3, "."),
luaL_optstring(L, 4, LUA_DIRSEP));
if (f != NULL) return 1;
else { /* error message is on top of the stack */
lua_pushnil(L);
lua_insert(L, -2);
return 2; /* return nil + error message */
}
}
static const char *findfile (lua_State *L, const char *name,
const char *pname,
const char *dirsep) {
const char *path;
lua_getfield(L, lua_upvalueindex(1), pname);
path = lua_tostring(L, -1);
if (path == NULL)
luaL_error(L, LUA_QL("package.%s") " must be a string", pname);
return searchpath(L, name, path, ".", dirsep);
}
static int checkload (lua_State *L, int stat, const char *filename) {
if (stat) { /* module loaded successfully? */
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2; /* return open function and file name */
}
else
return luaL_error(L, "error loading module " LUA_QS
" from file " LUA_QS ":\n\t%s",
lua_tostring(L, 1), filename, lua_tostring(L, -1));
}
static int searcher_Lua (lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
filename = findfile(L, name, "path", LUA_LSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (luaL_loadfile(L, filename) == LUA_OK), filename);
}
static int loadfunc (lua_State *L, const char *filename, const char *modname) {
const char *funcname;
const char *mark;
modname = luaL_gsub(L, modname, ".", LUA_OFSEP);
mark = strchr(modname, *LUA_IGMARK);
if (mark) {
int stat;
funcname = lua_pushlstring(L, modname, mark - modname);
funcname = lua_pushfstring(L, LUA_POF"%s", funcname);
stat = ll_loadfunc(L, filename, funcname);
if (stat != ERRFUNC) return stat;
modname = mark + 1; /* else go ahead and try old-style name */
}
funcname = lua_pushfstring(L, LUA_POF"%s", modname);
return ll_loadfunc(L, filename, funcname);
}
static int searcher_C (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
const char *filename = findfile(L, name, "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* module not found in this path */
return checkload(L, (loadfunc(L, filename, name) == 0), filename);
}
static int searcher_Croot (lua_State *L) {
const char *filename;
const char *name = luaL_checkstring(L, 1);
const char *p = strchr(name, '.');
int stat;
if (p == NULL) return 0; /* is root */
lua_pushlstring(L, name, p - name);
filename = findfile(L, lua_tostring(L, -1), "cpath", LUA_CSUBSEP);
if (filename == NULL) return 1; /* root not found */
if ((stat = loadfunc(L, filename, name)) != 0) {
if (stat != ERRFUNC)
return checkload(L, 0, filename); /* real error */
else { /* open function not found */
lua_pushfstring(L, "\n\tno module " LUA_QS " in file " LUA_QS,
name, filename);
return 1;
}
}
lua_pushstring(L, filename); /* will be 2nd argument to module */
return 2;
}
static int searcher_preload (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD");
lua_getfield(L, -1, name);
if (lua_isnil(L, -1)) /* not found? */
lua_pushfstring(L, "\n\tno field package.preload['%s']", name);
return 1;
}
static void findloader (lua_State *L, const char *name) {
int i;
luaL_Buffer msg; /* to build error message */
luaL_buffinit(L, &msg);
lua_getfield(L, lua_upvalueindex(1), "searchers"); /* will be at index 3 */
if (!lua_istable(L, 3))
luaL_error(L, LUA_QL("package.searchers") " must be a table");
/* iterate over available searchers to find a loader */
for (i = 1; ; i++) {
lua_rawgeti(L, 3, i); /* get a searcher */
if (lua_isnil(L, -1)) { /* no more searchers? */
lua_pop(L, 1); /* remove nil */
luaL_pushresult(&msg); /* create error message */
luaL_error(L, "module " LUA_QS " not found:%s",
name, lua_tostring(L, -1));
}
lua_pushstring(L, name);
lua_call(L, 1, 2); /* call it */
if (lua_isfunction(L, -2)) /* did it find a loader? */
return; /* module loader found */
else if (lua_isstring(L, -2)) { /* searcher returned error message? */
lua_pop(L, 1); /* remove extra return */
luaL_addvalue(&msg); /* concatenate error message */
}
else
lua_pop(L, 2); /* remove both returns */
}
}
static int ll_require (lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_settop(L, 1); /* _LOADED table will be at index 2 */
lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
lua_getfield(L, 2, name); /* _LOADED[name] */
if (lua_toboolean(L, -1)) /* is it there? */
return 1; /* package is already loaded */
/* else must load package */
lua_pop(L, 1); /* remove 'getfield' result */
findloader(L, name);
lua_pushstring(L, name); /* pass name as argument to module loader */
lua_insert(L, -2); /* name is 1st argument (before search data) */
lua_call(L, 2, 1); /* run loader to load module */
if (!lua_isnil(L, -1)) /* non-nil return? */
lua_setfield(L, 2, name); /* _LOADED[name] = returned value */
lua_getfield(L, 2, name);
if (lua_isnil(L, -1)) { /* module did not set a value? */
lua_pushboolean(L, 1); /* use true as result */
lua_pushvalue(L, -1); /* extra copy to be returned */
lua_setfield(L, 2, name); /* _LOADED[name] = true */
}
return 1;
}
/* }====================================================== */
/*
** {======================================================
** 'module' function
** =======================================================
*/
#if defined(LUA_COMPAT_MODULE)
/*
** changes the environment variable of calling function
*/
static void set_env (lua_State *L) {
lua_Debug ar;
if (lua_getstack(L, 1, &ar) == 0 ||
lua_getinfo(L, "f", &ar) == 0 || /* get calling function */
lua_iscfunction(L, -1))
luaL_error(L, LUA_QL("module") " not called from a Lua function");
lua_pushvalue(L, -2); /* copy new environment table to top */
lua_setupvalue(L, -2, 1);
lua_pop(L, 1); /* remove function */
}
static void dooptions (lua_State *L, int n) {
int i;
for (i = 2; i <= n; i++) {
if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */
lua_pushvalue(L, i); /* get option (a function) */
lua_pushvalue(L, -2); /* module */
lua_call(L, 1, 0);
}
}
}
static void modinit (lua_State *L, const char *modname) {
const char *dot;
lua_pushvalue(L, -1);
lua_setfield(L, -2, "_M"); /* module._M = module */
lua_pushstring(L, modname);
lua_setfield(L, -2, "_NAME");
dot = strrchr(modname, '.'); /* look for last dot in module name */
if (dot == NULL) dot = modname;
else dot++;
/* set _PACKAGE as package name (full module name minus last part) */
lua_pushlstring(L, modname, dot - modname);
lua_setfield(L, -2, "_PACKAGE");
}
static int ll_module (lua_State *L) {
const char *modname = luaL_checkstring(L, 1);
int lastarg = lua_gettop(L); /* last parameter */
luaL_pushmodule(L, modname, 1); /* get/create module table */
/* check whether table already has a _NAME field */
lua_getfield(L, -1, "_NAME");
if (!lua_isnil(L, -1)) /* is table an initialized module? */
lua_pop(L, 1);
else { /* no; initialize it */
lua_pop(L, 1);
modinit(L, modname);
}
lua_pushvalue(L, -1);
set_env(L);
dooptions(L, lastarg);
return 1;
}
static int ll_seeall (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
if (!lua_getmetatable(L, 1)) {
lua_createtable(L, 0, 1); /* create new metatable */
lua_pushvalue(L, -1);
lua_setmetatable(L, 1);
}
lua_pushglobaltable(L);
lua_setfield(L, -2, "__index"); /* mt.__index = _G */
return 0;
}
#endif
/* }====================================================== */
/* auxiliary mark (for internal use) */
#define AUXMARK "\1"
/*
** return registry.LUA_NOENV as a boolean
*/
static int noenv (lua_State *L) {
int b;
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
b = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
return b;
}
static void setpath (lua_State *L, const char *fieldname, const char *envname1,
const char *envname2, const char *def) {
const char *path = getenv(envname1);
if (path == NULL) /* no environment variable? */
path = getenv(envname2); /* try alternative name */
if (path == NULL || noenv(L)) /* no environment variable? */
lua_pushstring(L, def); /* use default */
else {
/* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
luaL_gsub(L, path, AUXMARK, def);
lua_remove(L, -2);
}
setprogdir(L);
lua_setfield(L, -2, fieldname);
}
static const luaL_Reg pk_funcs[] = {
{"loadlib", ll_loadlib},
{"searchpath", ll_searchpath},
#if defined(LUA_COMPAT_MODULE)
{"seeall", ll_seeall},
#endif
{NULL, NULL}
};
static const luaL_Reg ll_funcs[] = {
#if defined(LUA_COMPAT_MODULE)
{"module", ll_module},
#endif
{"require", ll_require},
{NULL, NULL}
};
static void createsearcherstable (lua_State *L) {
static const lua_CFunction searchers[] =
{searcher_preload, searcher_Lua, searcher_C, searcher_Croot, NULL};
int i;
/* create 'searchers' table */
lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0);
/* fill it with pre-defined searchers */
for (i=0; searchers[i] != NULL; i++) {
lua_pushvalue(L, -2); /* set 'package' as upvalue for all searchers */
lua_pushcclosure(L, searchers[i], 1);
lua_rawseti(L, -2, i+1);
}
}
LUAMOD_API int luaopen_package (lua_State *L) {
/* create table CLIBS to keep track of loaded C libraries */
luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS);
lua_createtable(L, 0, 1); /* metatable for CLIBS */
lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2);
/* create `package' table */
luaL_newlib(L, pk_funcs);
createsearcherstable(L);
#if defined(LUA_COMPAT_LOADERS)
lua_pushvalue(L, -1); /* make a copy of 'searchers' table */
lua_setfield(L, -3, "loaders"); /* put it in field `loaders' */
#endif
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
/* set field 'path' */
setpath(L, "path", LUA_PATHVERSION, LUA_PATH, LUA_PATH_DEFAULT);
/* set field 'cpath' */
setpath(L, "cpath", LUA_CPATHVERSION, LUA_CPATH, LUA_CPATH_DEFAULT);
/* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config");
/* set field `loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
lua_setfield(L, -2, "loaded");
/* set field `preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
lua_setfield(L, -2, "preload");
lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */
luaL_setfuncs(L, ll_funcs, 1); /* open lib into global table */
lua_pop(L, 1); /* pop global table */
return 1; /* return 'package' table */
}

View File

@ -0,0 +1,287 @@
/*
** $Id: lobject.c,v 2.58.1.1 2013/04/12 18:48:47 roberto Exp $
** Some generic functions over Lua objects
** See Copyright Notice in lua.h
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define lobject_c
#define LUA_CORE
#include "lua.h"
#include "lctype.h"
#include "ldebug.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "lvm.h"
LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
/*
** converts an integer to a "floating point byte", represented as
** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
** eeeee != 0 and (xxx) otherwise.
*/
int luaO_int2fb (unsigned int x) {
int e = 0; /* exponent */
if (x < 8) return x;
while (x >= 0x10) {
x = (x+1) >> 1;
e++;
}
return ((e+1) << 3) | (cast_int(x) - 8);
}
/* converts back */
int luaO_fb2int (int x) {
int e = (x >> 3) & 0x1f;
if (e == 0) return x;
else return ((x & 7) + 8) << (e - 1);
}
int luaO_ceillog2 (unsigned int x) {
static const lu_byte log_2[256] = {
0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
};
int l = 0;
x--;
while (x >= 256) { l += 8; x >>= 8; }
return l + log_2[x];
}
lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {
switch (op) {
case LUA_OPADD: return luai_numadd(NULL, v1, v2);
case LUA_OPSUB: return luai_numsub(NULL, v1, v2);
case LUA_OPMUL: return luai_nummul(NULL, v1, v2);
case LUA_OPDIV: return luai_numdiv(NULL, v1, v2);
case LUA_OPMOD: return luai_nummod(NULL, v1, v2);
case LUA_OPPOW: return luai_numpow(NULL, v1, v2);
case LUA_OPUNM: return luai_numunm(NULL, v1);
default: lua_assert(0); return 0;
}
}
int luaO_hexavalue (int c) {
if (lisdigit(c)) return c - '0';
else return ltolower(c) - 'a' + 10;
}
#if !defined(lua_strx2number)
#include <math.h>
static int isneg (const char **s) {
if (**s == '-') { (*s)++; return 1; }
else if (**s == '+') (*s)++;
return 0;
}
static lua_Number readhexa (const char **s, lua_Number r, int *count) {
for (; lisxdigit(cast_uchar(**s)); (*s)++) { /* read integer part */
r = (r * cast_num(16.0)) + cast_num(luaO_hexavalue(cast_uchar(**s)));
(*count)++;
}
return r;
}
/*
** convert an hexadecimal numeric string to a number, following
** C99 specification for 'strtod'
*/
static lua_Number lua_strx2number (const char *s, char **endptr) {
lua_Number r = 0.0;
int e = 0, i = 0;
int neg = 0; /* 1 if number is negative */
*endptr = cast(char *, s); /* nothing is valid yet */
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s); /* check signal */
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */
return 0.0; /* invalid format (no '0x') */
s += 2; /* skip '0x' */
r = readhexa(&s, r, &i); /* read integer part */
if (*s == '.') {
s++; /* skip dot */
r = readhexa(&s, r, &e); /* read fractional part */
}
if (i == 0 && e == 0)
return 0.0; /* invalid format (no digit) */
e *= -4; /* each fractional digit divides value by 2^-4 */
*endptr = cast(char *, s); /* valid up to here */
if (*s == 'p' || *s == 'P') { /* exponent part? */
int exp1 = 0;
int neg1;
s++; /* skip 'p' */
neg1 = isneg(&s); /* signal */
if (!lisdigit(cast_uchar(*s)))
goto ret; /* must have at least one digit */
while (lisdigit(cast_uchar(*s))) /* read exponent */
exp1 = exp1 * 10 + *(s++) - '0';
if (neg1) exp1 = -exp1;
e += exp1;
}
*endptr = cast(char *, s); /* valid up to here */
ret:
if (neg) r = -r;
return l_mathop(ldexp)(r, e);
}
#endif
int luaO_str2d (const char *s, size_t len, lua_Number *result) {
char *endptr;
if (strpbrk(s, "nN")) /* reject 'inf' and 'nan' */
return 0;
else if (strpbrk(s, "xX")) /* hexa? */
*result = lua_strx2number(s, &endptr);
else
*result = lua_str2number(s, &endptr);
if (endptr == s) return 0; /* nothing recognized */
while (lisspace(cast_uchar(*endptr))) endptr++;
return (endptr == s + len); /* OK if no trailing characters */
}
static void pushstr (lua_State *L, const char *str, size_t l) {
setsvalue2s(L, L->top++, luaS_newlstr(L, str, l));
}
/* this function handles only `%d', `%c', %f, %p, and `%s' formats */
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
int n = 0;
for (;;) {
const char *e = strchr(fmt, '%');
if (e == NULL) break;
luaD_checkstack(L, 2); /* fmt + item */
pushstr(L, fmt, e - fmt);
switch (*(e+1)) {
case 's': {
const char *s = va_arg(argp, char *);
if (s == NULL) s = "(null)";
pushstr(L, s, strlen(s));
break;
}
case 'c': {
char buff;
buff = cast(char, va_arg(argp, int));
pushstr(L, &buff, 1);
break;
}
case 'd': {
setnvalue(L->top++, cast_num(va_arg(argp, int)));
break;
}
case 'f': {
setnvalue(L->top++, cast_num(va_arg(argp, l_uacNumber)));
break;
}
case 'p': {
char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
int l = sprintf(buff, "%p", va_arg(argp, void *));
pushstr(L, buff, l);
break;
}
case '%': {
pushstr(L, "%", 1);
break;
}
default: {
luaG_runerror(L,
"invalid option " LUA_QL("%%%c") " to " LUA_QL("lua_pushfstring"),
*(e + 1));
}
}
n += 2;
fmt = e+2;
}
luaD_checkstack(L, 1);
pushstr(L, fmt, strlen(fmt));
if (n > 0) luaV_concat(L, n + 1);
return svalue(L->top - 1);
}
const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
const char *msg;
va_list argp;
va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp);
va_end(argp);
return msg;
}
/* number of chars of a literal string without the ending \0 */
#define LL(x) (sizeof(x)/sizeof(char) - 1)
#define RETS "..."
#define PRE "[string \""
#define POS "\"]"
#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
void luaO_chunkid (char *out, const char *source, size_t bufflen) {
size_t l = strlen(source);
if (*source == '=') { /* 'literal' source */
if (l <= bufflen) /* small enough? */
memcpy(out, source + 1, l * sizeof(char));
else { /* truncate it */
addstr(out, source + 1, bufflen - 1);
*out = '\0';
}
}
else if (*source == '@') { /* file name */
if (l <= bufflen) /* small enough? */
memcpy(out, source + 1, l * sizeof(char));
else { /* add '...' before rest of name */
addstr(out, RETS, LL(RETS));
bufflen -= LL(RETS);
memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));
}
}
else { /* string; format as [string "source"] */
const char *nl = strchr(source, '\n'); /* find first new line (if any) */
addstr(out, PRE, LL(PRE)); /* add prefix */
bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */
if (l < bufflen && nl == NULL) { /* small one-line source? */
addstr(out, source, l); /* keep it */
}
else {
if (nl != NULL) l = nl - source; /* stop at first newline */
if (l > bufflen) l = bufflen;
addstr(out, source, l);
addstr(out, RETS, LL(RETS));
}
memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
}
}

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@ -0,0 +1,607 @@
/*
** $Id: lobject.h,v 2.71.1.1 2013/04/12 18:48:47 roberto Exp $
** Type definitions for Lua objects
** See Copyright Notice in lua.h
*/
#ifndef lobject_h
#define lobject_h
#include <stdarg.h>
#include "llimits.h"
#include "lua.h"
/*
** Extra tags for non-values
*/
#define LUA_TPROTO LUA_NUMTAGS
#define LUA_TUPVAL (LUA_NUMTAGS+1)
#define LUA_TDEADKEY (LUA_NUMTAGS+2)
/*
** number of all possible tags (including LUA_TNONE but excluding DEADKEY)
*/
#define LUA_TOTALTAGS (LUA_TUPVAL+2)
/*
** tags for Tagged Values have the following use of bits:
** bits 0-3: actual tag (a LUA_T* value)
** bits 4-5: variant bits
** bit 6: whether value is collectable
*/
#define VARBITS (3 << 4)
/*
** LUA_TFUNCTION variants:
** 0 - Lua function
** 1 - light C function
** 2 - regular C function (closure)
*/
/* Variant tags for functions */
#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */
#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */
#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */
/* Variant tags for strings */
#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */
#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */
/* Bit mark for collectable types */
#define BIT_ISCOLLECTABLE (1 << 6)
/* mark a tag as collectable */
#define ctb(t) ((t) | BIT_ISCOLLECTABLE)
/*
** Union of all collectable objects
*/
typedef union GCObject GCObject;
/*
** Common Header for all collectable objects (in macro form, to be
** included in other objects)
*/
#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked
/*
** Common header in struct form
*/
typedef struct GCheader {
CommonHeader;
} GCheader;
/*
** Union of all Lua values
*/
typedef union Value Value;
#define numfield lua_Number n; /* numbers */
/*
** Tagged Values. This is the basic representation of values in Lua,
** an actual value plus a tag with its type.
*/
#define TValuefields Value value_; int tt_
typedef struct lua_TValue TValue;
/* macro defining a nil value */
#define NILCONSTANT {NULL}, LUA_TNIL
#define val_(o) ((o)->value_)
#define num_(o) (val_(o).n)
/* raw type tag of a TValue */
#define rttype(o) ((o)->tt_)
/* tag with no variants (bits 0-3) */
#define novariant(x) ((x) & 0x0F)
/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */
#define ttype(o) (rttype(o) & 0x3F)
/* type tag of a TValue with no variants (bits 0-3) */
#define ttypenv(o) (novariant(rttype(o)))
/* Macros to test type */
#define checktag(o,t) (rttype(o) == (t))
#define checktype(o,t) (ttypenv(o) == (t))
#define ttisnumber(o) checktag((o), LUA_TNUMBER)
#define ttisnil(o) checktag((o), LUA_TNIL)
#define ttisboolean(o) checktag((o), LUA_TBOOLEAN)
#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA)
#define ttisstring(o) checktype((o), LUA_TSTRING)
#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR))
#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR))
#define ttistable(o) checktag((o), ctb(LUA_TTABLE))
#define ttisfunction(o) checktype(o, LUA_TFUNCTION)
#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION)
#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL))
#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL))
#define ttislcf(o) checktag((o), LUA_TLCF)
#define ttisuserdata(o) checktag((o), ctb(LUA_TUSERDATA))
#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD))
#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY)
#define ttisequal(o1,o2) (rttype(o1) == rttype(o2))
/* Macros to access values */
#define nvalue(o) check_exp(ttisnumber(o), num_(o))
#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc)
#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p)
#define rawtsvalue(o) check_exp(ttisstring(o), &val_(o).gc->ts)
#define tsvalue(o) (&rawtsvalue(o)->tsv)
#define rawuvalue(o) check_exp(ttisuserdata(o), &val_(o).gc->u)
#define uvalue(o) (&rawuvalue(o)->uv)
#define clvalue(o) check_exp(ttisclosure(o), &val_(o).gc->cl)
#define clLvalue(o) check_exp(ttisLclosure(o), &val_(o).gc->cl.l)
#define clCvalue(o) check_exp(ttisCclosure(o), &val_(o).gc->cl.c)
#define fvalue(o) check_exp(ttislcf(o), val_(o).f)
#define hvalue(o) check_exp(ttistable(o), &val_(o).gc->h)
#define bvalue(o) check_exp(ttisboolean(o), val_(o).b)
#define thvalue(o) check_exp(ttisthread(o), &val_(o).gc->th)
/* a dead value may get the 'gc' field, but cannot access its contents */
#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc))
#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE)
/* Macros for internal tests */
#define righttt(obj) (ttype(obj) == gcvalue(obj)->gch.tt)
#define checkliveness(g,obj) \
lua_longassert(!iscollectable(obj) || \
(righttt(obj) && !isdead(g,gcvalue(obj))))
/* Macros to set values */
#define settt_(o,t) ((o)->tt_=(t))
#define setnvalue(obj,x) \
{ TValue *io=(obj); num_(io)=(x); settt_(io, LUA_TNUMBER); }
#define setnilvalue(obj) settt_(obj, LUA_TNIL)
#define setfvalue(obj,x) \
{ TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); }
#define setpvalue(obj,x) \
{ TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); }
#define setbvalue(obj,x) \
{ TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); }
#define setgcovalue(L,obj,x) \
{ TValue *io=(obj); GCObject *i_g=(x); \
val_(io).gc=i_g; settt_(io, ctb(gch(i_g)->tt)); }
#define setsvalue(L,obj,x) \
{ TValue *io=(obj); \
TString *x_ = (x); \
val_(io).gc=cast(GCObject *, x_); settt_(io, ctb(x_->tsv.tt)); \
checkliveness(G(L),io); }
#define setuvalue(L,obj,x) \
{ TValue *io=(obj); \
val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TUSERDATA)); \
checkliveness(G(L),io); }
#define setthvalue(L,obj,x) \
{ TValue *io=(obj); \
val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TTHREAD)); \
checkliveness(G(L),io); }
#define setclLvalue(L,obj,x) \
{ TValue *io=(obj); \
val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TLCL)); \
checkliveness(G(L),io); }
#define setclCvalue(L,obj,x) \
{ TValue *io=(obj); \
val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TCCL)); \
checkliveness(G(L),io); }
#define sethvalue(L,obj,x) \
{ TValue *io=(obj); \
val_(io).gc=cast(GCObject *, (x)); settt_(io, ctb(LUA_TTABLE)); \
checkliveness(G(L),io); }
#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY)
#define setobj(L,obj1,obj2) \
{ const TValue *io2=(obj2); TValue *io1=(obj1); \
io1->value_ = io2->value_; io1->tt_ = io2->tt_; \
checkliveness(G(L),io1); }
/*
** different types of assignments, according to destination
*/
/* from stack to (same) stack */
#define setobjs2s setobj
/* to stack (not from same stack) */
#define setobj2s setobj
#define setsvalue2s setsvalue
#define sethvalue2s sethvalue
#define setptvalue2s setptvalue
/* from table to same table */
#define setobjt2t setobj
/* to table */
#define setobj2t setobj
/* to new object */
#define setobj2n setobj
#define setsvalue2n setsvalue
/* check whether a number is valid (useful only for NaN trick) */
#define luai_checknum(L,o,c) { /* empty */ }
/*
** {======================================================
** NaN Trick
** =======================================================
*/
#if defined(LUA_NANTRICK)
/*
** numbers are represented in the 'd_' field. All other values have the
** value (NNMARK | tag) in 'tt__'. A number with such pattern would be
** a "signaled NaN", which is never generated by regular operations by
** the CPU (nor by 'strtod')
*/
/* allows for external implementation for part of the trick */
#if !defined(NNMARK) /* { */
#if !defined(LUA_IEEEENDIAN)
#error option 'LUA_NANTRICK' needs 'LUA_IEEEENDIAN'
#endif
#define NNMARK 0x7FF7A500
#define NNMASK 0x7FFFFF00
#undef TValuefields
#undef NILCONSTANT
#if (LUA_IEEEENDIAN == 0) /* { */
/* little endian */
#define TValuefields \
union { struct { Value v__; int tt__; } i; double d__; } u
#define NILCONSTANT {{{NULL}, tag2tt(LUA_TNIL)}}
/* field-access macros */
#define v_(o) ((o)->u.i.v__)
#define d_(o) ((o)->u.d__)
#define tt_(o) ((o)->u.i.tt__)
#else /* }{ */
/* big endian */
#define TValuefields \
union { struct { int tt__; Value v__; } i; double d__; } u
#define NILCONSTANT {{tag2tt(LUA_TNIL), {NULL}}}
/* field-access macros */
#define v_(o) ((o)->u.i.v__)
#define d_(o) ((o)->u.d__)
#define tt_(o) ((o)->u.i.tt__)
#endif /* } */
#endif /* } */
/* correspondence with standard representation */
#undef val_
#define val_(o) v_(o)
#undef num_
#define num_(o) d_(o)
#undef numfield
#define numfield /* no such field; numbers are the entire struct */
/* basic check to distinguish numbers from non-numbers */
#undef ttisnumber
#define ttisnumber(o) ((tt_(o) & NNMASK) != NNMARK)
#define tag2tt(t) (NNMARK | (t))
#undef rttype
#define rttype(o) (ttisnumber(o) ? LUA_TNUMBER : tt_(o) & 0xff)
#undef settt_
#define settt_(o,t) (tt_(o) = tag2tt(t))
#undef setnvalue
#define setnvalue(obj,x) \
{ TValue *io_=(obj); num_(io_)=(x); lua_assert(ttisnumber(io_)); }
#undef setobj
#define setobj(L,obj1,obj2) \
{ const TValue *o2_=(obj2); TValue *o1_=(obj1); \
o1_->u = o2_->u; \
checkliveness(G(L),o1_); }
/*
** these redefinitions are not mandatory, but these forms are more efficient
*/
#undef checktag
#undef checktype
#define checktag(o,t) (tt_(o) == tag2tt(t))
#define checktype(o,t) (ctb(tt_(o) | VARBITS) == ctb(tag2tt(t) | VARBITS))
#undef ttisequal
#define ttisequal(o1,o2) \
(ttisnumber(o1) ? ttisnumber(o2) : (tt_(o1) == tt_(o2)))
#undef luai_checknum
#define luai_checknum(L,o,c) { if (!ttisnumber(o)) c; }
#endif
/* }====================================================== */
/*
** {======================================================
** types and prototypes
** =======================================================
*/
union Value {
GCObject *gc; /* collectable objects */
void *p; /* light userdata */
int b; /* booleans */
lua_CFunction f; /* light C functions */
numfield /* numbers */
};
struct lua_TValue {
TValuefields;
};
typedef TValue *StkId; /* index to stack elements */
/*
** Header for string value; string bytes follow the end of this structure
*/
typedef union TString {
L_Umaxalign dummy; /* ensures maximum alignment for strings */
struct {
CommonHeader;
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
unsigned int hash;
size_t len; /* number of characters in string */
} tsv;
} TString;
/* get the actual string (array of bytes) from a TString */
#define getstr(ts) cast(const char *, (ts) + 1)
/* get the actual string (array of bytes) from a Lua value */
#define svalue(o) getstr(rawtsvalue(o))
/*
** Header for userdata; memory area follows the end of this structure
*/
typedef union Udata {
L_Umaxalign dummy; /* ensures maximum alignment for `local' udata */
struct {
CommonHeader;
struct Table *metatable;
struct Table *env;
size_t len; /* number of bytes */
} uv;
} Udata;
/*
** Description of an upvalue for function prototypes
*/
typedef struct Upvaldesc {
TString *name; /* upvalue name (for debug information) */
lu_byte instack; /* whether it is in stack */
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
} Upvaldesc;
/*
** Description of a local variable for function prototypes
** (used for debug information)
*/
typedef struct LocVar {
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
} LocVar;
/*
** Function Prototypes
*/
typedef struct Proto {
CommonHeader;
TValue *k; /* constants used by the function */
Instruction *code;
struct Proto **p; /* functions defined inside the function */
int *lineinfo; /* map from opcodes to source lines (debug information) */
LocVar *locvars; /* information about local variables (debug information) */
Upvaldesc *upvalues; /* upvalue information */
union Closure *cache; /* last created closure with this prototype */
TString *source; /* used for debug information */
int sizeupvalues; /* size of 'upvalues' */
int sizek; /* size of `k' */
int sizecode;
int sizelineinfo;
int sizep; /* size of `p' */
int sizelocvars;
int linedefined;
int lastlinedefined;
GCObject *gclist;
lu_byte numparams; /* number of fixed parameters */
lu_byte is_vararg;
lu_byte maxstacksize; /* maximum stack used by this function */
} Proto;
/*
** Lua Upvalues
*/
typedef struct UpVal {
CommonHeader;
TValue *v; /* points to stack or to its own value */
union {
TValue value; /* the value (when closed) */
struct { /* double linked list (when open) */
struct UpVal *prev;
struct UpVal *next;
} l;
} u;
} UpVal;
/*
** Closures
*/
#define ClosureHeader \
CommonHeader; lu_byte nupvalues; GCObject *gclist
typedef struct CClosure {
ClosureHeader;
lua_CFunction f;
TValue upvalue[1]; /* list of upvalues */
} CClosure;
typedef struct LClosure {
ClosureHeader;
struct Proto *p;
UpVal *upvals[1]; /* list of upvalues */
} LClosure;
typedef union Closure {
CClosure c;
LClosure l;
} Closure;
#define isLfunction(o) ttisLclosure(o)
#define getproto(o) (clLvalue(o)->p)
/*
** Tables
*/
typedef union TKey {
struct {
TValuefields;
struct Node *next; /* for chaining */
} nk;
TValue tvk;
} TKey;
typedef struct Node {
TValue i_val;
TKey i_key;
} Node;
typedef struct Table {
CommonHeader;
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of `node' array */
struct Table *metatable;
TValue *array; /* array part */
Node *node;
Node *lastfree; /* any free position is before this position */
GCObject *gclist;
int sizearray; /* size of `array' array */
} Table;
/*
** `module' operation for hashing (size is always a power of 2)
*/
#define lmod(s,size) \
(check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))
#define twoto(x) (1<<(x))
#define sizenode(t) (twoto((t)->lsizenode))
/*
** (address of) a fixed nil value
*/
#define luaO_nilobject (&luaO_nilobject_)
LUAI_DDEC const TValue luaO_nilobject_;
LUAI_FUNC int luaO_int2fb (unsigned int x);
LUAI_FUNC int luaO_fb2int (int x);
LUAI_FUNC int luaO_ceillog2 (unsigned int x);
LUAI_FUNC lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2);
LUAI_FUNC int luaO_str2d (const char *s, size_t len, lua_Number *result);
LUAI_FUNC int luaO_hexavalue (int c);
LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
va_list argp);
LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
#endif

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/*
** $Id: lopcodes.c,v 1.49.1.1 2013/04/12 18:48:47 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#define lopcodes_c
#define LUA_CORE
#include "lopcodes.h"
/* ORDER OP */
LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = {
"MOVE",
"LOADK",
"LOADKX",
"LOADBOOL",
"LOADNIL",
"GETUPVAL",
"GETTABUP",
"GETTABLE",
"SETTABUP",
"SETUPVAL",
"SETTABLE",
"NEWTABLE",
"SELF",
"ADD",
"SUB",
"MUL",
"DIV",
"MOD",
"POW",
"UNM",
"NOT",
"LEN",
"CONCAT",
"JMP",
"EQ",
"LT",
"LE",
"TEST",
"TESTSET",
"CALL",
"TAILCALL",
"RETURN",
"FORLOOP",
"FORPREP",
"TFORCALL",
"TFORLOOP",
"SETLIST",
"CLOSURE",
"VARARG",
"EXTRAARG",
NULL
};
#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* T A B C mode opcode */
opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */
,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */
,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */
,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */
,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */
,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */
,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */
,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */
,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */
,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */
,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */
,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */
};

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/*
** $Id: lopcodes.h,v 1.142.1.1 2013/04/12 18:48:47 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lopcodes_h
#define lopcodes_h
#include "llimits.h"
/*===========================================================================
We assume that instructions are unsigned numbers.
All instructions have an opcode in the first 6 bits.
Instructions can have the following fields:
`A' : 8 bits
`B' : 9 bits
`C' : 9 bits
'Ax' : 26 bits ('A', 'B', and 'C' together)
`Bx' : 18 bits (`B' and `C' together)
`sBx' : signed Bx
A signed argument is represented in excess K; that is, the number
value is the unsigned value minus K. K is exactly the maximum value
for that argument (so that -max is represented by 0, and +max is
represented by 2*max), which is half the maximum for the corresponding
unsigned argument.
===========================================================================*/
enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */
/*
** size and position of opcode arguments.
*/
#define SIZE_C 9
#define SIZE_B 9
#define SIZE_Bx (SIZE_C + SIZE_B)
#define SIZE_A 8
#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A)
#define SIZE_OP 6
#define POS_OP 0
#define POS_A (POS_OP + SIZE_OP)
#define POS_C (POS_A + SIZE_A)
#define POS_B (POS_C + SIZE_C)
#define POS_Bx POS_C
#define POS_Ax POS_A
/*
** limits for opcode arguments.
** we use (signed) int to manipulate most arguments,
** so they must fit in LUAI_BITSINT-1 bits (-1 for sign)
*/
#if SIZE_Bx < LUAI_BITSINT-1
#define MAXARG_Bx ((1<<SIZE_Bx)-1)
#define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */
#else
#define MAXARG_Bx MAX_INT
#define MAXARG_sBx MAX_INT
#endif
#if SIZE_Ax < LUAI_BITSINT-1
#define MAXARG_Ax ((1<<SIZE_Ax)-1)
#else
#define MAXARG_Ax MAX_INT
#endif
#define MAXARG_A ((1<<SIZE_A)-1)
#define MAXARG_B ((1<<SIZE_B)-1)
#define MAXARG_C ((1<<SIZE_C)-1)
/* creates a mask with `n' 1 bits at position `p' */
#define MASK1(n,p) ((~((~(Instruction)0)<<(n)))<<(p))
/* creates a mask with `n' 0 bits at position `p' */
#define MASK0(n,p) (~MASK1(n,p))
/*
** the following macros help to manipulate instructions
*/
#define GET_OPCODE(i) (cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0)))
#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
#define getarg(i,pos,size) (cast(int, ((i)>>pos) & MASK1(size,0)))
#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \
((cast(Instruction, v)<<pos)&MASK1(size,pos))))
#define GETARG_A(i) getarg(i, POS_A, SIZE_A)
#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A)
#define GETARG_B(i) getarg(i, POS_B, SIZE_B)
#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B)
#define GETARG_C(i) getarg(i, POS_C, SIZE_C)
#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C)
#define GETARG_Bx(i) getarg(i, POS_Bx, SIZE_Bx)
#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx)
#define GETARG_Ax(i) getarg(i, POS_Ax, SIZE_Ax)
#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax)
#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx)
#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
#define CREATE_ABC(o,a,b,c) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, b)<<POS_B) \
| (cast(Instruction, c)<<POS_C))
#define CREATE_ABx(o,a,bc) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, bc)<<POS_Bx))
#define CREATE_Ax(o,a) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_Ax))
/*
** Macros to operate RK indices
*/
/* this bit 1 means constant (0 means register) */
#define BITRK (1 << (SIZE_B - 1))
/* test whether value is a constant */
#define ISK(x) ((x) & BITRK)
/* gets the index of the constant */
#define INDEXK(r) ((int)(r) & ~BITRK)
#define MAXINDEXRK (BITRK - 1)
/* code a constant index as a RK value */
#define RKASK(x) ((x) | BITRK)
/*
** invalid register that fits in 8 bits
*/
#define NO_REG MAXARG_A
/*
** R(x) - register
** Kst(x) - constant (in constant table)
** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
*/
/*
** grep "ORDER OP" if you change these enums
*/
typedef enum {
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R(A) := R(B) */
OP_LOADK,/* A Bx R(A) := Kst(Bx) */
OP_LOADKX,/* A R(A) := Kst(extra arg) */
OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) pc++ */
OP_LOADNIL,/* A B R(A), R(A+1), ..., R(A+B) := nil */
OP_GETUPVAL,/* A B R(A) := UpValue[B] */
OP_GETTABUP,/* A B C R(A) := UpValue[B][RK(C)] */
OP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */
OP_SETTABUP,/* A B C UpValue[A][RK(B)] := RK(C) */
OP_SETUPVAL,/* A B UpValue[B] := R(A) */
OP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */
OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */
OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */
OP_ADD,/* A B C R(A) := RK(B) + RK(C) */
OP_SUB,/* A B C R(A) := RK(B) - RK(C) */
OP_MUL,/* A B C R(A) := RK(B) * RK(C) */
OP_DIV,/* A B C R(A) := RK(B) / RK(C) */
OP_MOD,/* A B C R(A) := RK(B) % RK(C) */
OP_POW,/* A B C R(A) := RK(B) ^ RK(C) */
OP_UNM,/* A B R(A) := -R(B) */
OP_NOT,/* A B R(A) := not R(B) */
OP_LEN,/* A B R(A) := length of R(B) */
OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */
OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A) + 1 */
OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
OP_TEST,/* A C if not (R(A) <=> C) then pc++ */
OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */
OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
OP_FORLOOP,/* A sBx R(A)+=R(A+2);
if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
OP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */
OP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
OP_TFORLOOP,/* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/
OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */
OP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx]) */
OP_VARARG,/* A B R(A), R(A+1), ..., R(A+B-2) = vararg */
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
} OpCode;
#define NUM_OPCODES (cast(int, OP_EXTRAARG) + 1)
/*===========================================================================
Notes:
(*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then `top' is
set to last_result+1, so next open instruction (OP_CALL, OP_RETURN,
OP_SETLIST) may use `top'.
(*) In OP_VARARG, if (B == 0) then use actual number of varargs and
set top (like in OP_CALL with C == 0).
(*) In OP_RETURN, if (B == 0) then return up to `top'.
(*) In OP_SETLIST, if (B == 0) then B = `top'; if (C == 0) then next
'instruction' is EXTRAARG(real C).
(*) In OP_LOADKX, the next 'instruction' is always EXTRAARG.
(*) For comparisons, A specifies what condition the test should accept
(true or false).
(*) All `skips' (pc++) assume that next instruction is a jump.
===========================================================================*/
/*
** masks for instruction properties. The format is:
** bits 0-1: op mode
** bits 2-3: C arg mode
** bits 4-5: B arg mode
** bit 6: instruction set register A
** bit 7: operator is a test (next instruction must be a jump)
*/
enum OpArgMask {
OpArgN, /* argument is not used */
OpArgU, /* argument is used */
OpArgR, /* argument is a register or a jump offset */
OpArgK /* argument is a constant or register/constant */
};
LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
#define getBMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
#define testAMode(m) (luaP_opmodes[m] & (1 << 6))
#define testTMode(m) (luaP_opmodes[m] & (1 << 7))
LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */
/* number of list items to accumulate before a SETLIST instruction */
#define LFIELDS_PER_FLUSH 50
#endif

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/*
** $Id: loslib.c,v 1.40.1.1 2013/04/12 18:48:47 roberto Exp $
** Standard Operating System library
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define loslib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
/*
** list of valid conversion specifiers for the 'strftime' function
*/
#if !defined(LUA_STRFTIMEOPTIONS)
#if !defined(LUA_USE_POSIX)
#define LUA_STRFTIMEOPTIONS { "aAbBcdHIjmMpSUwWxXyYz%", "" }
#else
#define LUA_STRFTIMEOPTIONS \
{ "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "" \
"", "E", "cCxXyY", \
"O", "deHImMSuUVwWy" }
#endif
#endif
/*
** By default, Lua uses tmpnam except when POSIX is available, where it
** uses mkstemp.
*/
#if defined(LUA_USE_MKSTEMP)
#include <unistd.h>
#define LUA_TMPNAMBUFSIZE 32
#define lua_tmpnam(b,e) { \
strcpy(b, "/tmp/lua_XXXXXX"); \
e = mkstemp(b); \
if (e != -1) close(e); \
e = (e == -1); }
#elif !defined(lua_tmpnam)
#define LUA_TMPNAMBUFSIZE L_tmpnam
#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); }
#endif
/*
** By default, Lua uses gmtime/localtime, except when POSIX is available,
** where it uses gmtime_r/localtime_r
*/
#if defined(LUA_USE_GMTIME_R)
#define l_gmtime(t,r) gmtime_r(t,r)
#define l_localtime(t,r) localtime_r(t,r)
#elif !defined(l_gmtime)
#define l_gmtime(t,r) ((void)r, gmtime(t))
#define l_localtime(t,r) ((void)r, localtime(t))
#endif
static int os_execute (lua_State *L) {
const char *cmd = luaL_optstring(L, 1, NULL);
int stat = system(cmd);
if (cmd != NULL)
return luaL_execresult(L, stat);
else {
lua_pushboolean(L, stat); /* true if there is a shell */
return 1;
}
}
static int os_remove (lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
return luaL_fileresult(L, remove(filename) == 0, filename);
}
static int os_rename (lua_State *L) {
const char *fromname = luaL_checkstring(L, 1);
const char *toname = luaL_checkstring(L, 2);
return luaL_fileresult(L, rename(fromname, toname) == 0, NULL);
}
static int os_tmpname (lua_State *L) {
char buff[LUA_TMPNAMBUFSIZE];
int err;
lua_tmpnam(buff, err);
if (err)
return luaL_error(L, "unable to generate a unique filename");
lua_pushstring(L, buff);
return 1;
}
static int os_getenv (lua_State *L) {
lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */
return 1;
}
static int os_clock (lua_State *L) {
lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
return 1;
}
/*
** {======================================================
** Time/Date operations
** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
** wday=%w+1, yday=%j, isdst=? }
** =======================================================
*/
static void setfield (lua_State *L, const char *key, int value) {
lua_pushinteger(L, value);
lua_setfield(L, -2, key);
}
static void setboolfield (lua_State *L, const char *key, int value) {
if (value < 0) /* undefined? */
return; /* does not set field */
lua_pushboolean(L, value);
lua_setfield(L, -2, key);
}
static int getboolfield (lua_State *L, const char *key) {
int res;
lua_getfield(L, -1, key);
res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
}
static int getfield (lua_State *L, const char *key, int d) {
int res, isnum;
lua_getfield(L, -1, key);
res = (int)lua_tointegerx(L, -1, &isnum);
if (!isnum) {
if (d < 0)
return luaL_error(L, "field " LUA_QS " missing in date table", key);
res = d;
}
lua_pop(L, 1);
return res;
}
static const char *checkoption (lua_State *L, const char *conv, char *buff) {
static const char *const options[] = LUA_STRFTIMEOPTIONS;
unsigned int i;
for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) {
if (*conv != '\0' && strchr(options[i], *conv) != NULL) {
buff[1] = *conv;
if (*options[i + 1] == '\0') { /* one-char conversion specifier? */
buff[2] = '\0'; /* end buffer */
return conv + 1;
}
else if (*(conv + 1) != '\0' &&
strchr(options[i + 1], *(conv + 1)) != NULL) {
buff[2] = *(conv + 1); /* valid two-char conversion specifier */
buff[3] = '\0'; /* end buffer */
return conv + 2;
}
}
}
luaL_argerror(L, 1,
lua_pushfstring(L, "invalid conversion specifier '%%%s'", conv));
return conv; /* to avoid warnings */
}
static int os_date (lua_State *L) {
const char *s = luaL_optstring(L, 1, "%c");
time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL));
struct tm tmr, *stm;
if (*s == '!') { /* UTC? */
stm = l_gmtime(&t, &tmr);
s++; /* skip `!' */
}
else
stm = l_localtime(&t, &tmr);
if (stm == NULL) /* invalid date? */
lua_pushnil(L);
else if (strcmp(s, "*t") == 0) {
lua_createtable(L, 0, 9); /* 9 = number of fields */
setfield(L, "sec", stm->tm_sec);
setfield(L, "min", stm->tm_min);
setfield(L, "hour", stm->tm_hour);
setfield(L, "day", stm->tm_mday);
setfield(L, "month", stm->tm_mon+1);
setfield(L, "year", stm->tm_year+1900);
setfield(L, "wday", stm->tm_wday+1);
setfield(L, "yday", stm->tm_yday+1);
setboolfield(L, "isdst", stm->tm_isdst);
}
else {
char cc[4];
luaL_Buffer b;
cc[0] = '%';
luaL_buffinit(L, &b);
while (*s) {
if (*s != '%') /* no conversion specifier? */
luaL_addchar(&b, *s++);
else {
size_t reslen;
char buff[200]; /* should be big enough for any conversion result */
s = checkoption(L, s + 1, cc);
reslen = strftime(buff, sizeof(buff), cc, stm);
luaL_addlstring(&b, buff, reslen);
}
}
luaL_pushresult(&b);
}
return 1;
}
static int os_time (lua_State *L) {
time_t t;
if (lua_isnoneornil(L, 1)) /* called without args? */
t = time(NULL); /* get current time */
else {
struct tm ts;
luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 1); /* make sure table is at the top */
ts.tm_sec = getfield(L, "sec", 0);
ts.tm_min = getfield(L, "min", 0);
ts.tm_hour = getfield(L, "hour", 12);
ts.tm_mday = getfield(L, "day", -1);
ts.tm_mon = getfield(L, "month", -1) - 1;
ts.tm_year = getfield(L, "year", -1) - 1900;
ts.tm_isdst = getboolfield(L, "isdst");
t = mktime(&ts);
}
if (t == (time_t)(-1))
lua_pushnil(L);
else
lua_pushnumber(L, (lua_Number)t);
return 1;
}
static int os_difftime (lua_State *L) {
lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
(time_t)(luaL_optnumber(L, 2, 0))));
return 1;
}
/* }====================================================== */
static int os_setlocale (lua_State *L) {
static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
LC_NUMERIC, LC_TIME};
static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
"numeric", "time", NULL};
const char *l = luaL_optstring(L, 1, NULL);
int op = luaL_checkoption(L, 2, "all", catnames);
lua_pushstring(L, setlocale(cat[op], l));
return 1;
}
static int os_exit (lua_State *L) {
int status;
if (lua_isboolean(L, 1))
status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE);
else
status = luaL_optint(L, 1, EXIT_SUCCESS);
if (lua_toboolean(L, 2))
lua_close(L);
if (L) exit(status); /* 'if' to avoid warnings for unreachable 'return' */
return 0;
}
static const luaL_Reg syslib[] = {
{"clock", os_clock},
{"date", os_date},
{"difftime", os_difftime},
{"execute", os_execute},
{"exit", os_exit},
{"getenv", os_getenv},
{"remove", os_remove},
{"rename", os_rename},
{"setlocale", os_setlocale},
{"time", os_time},
{"tmpname", os_tmpname},
{NULL, NULL}
};
/* }====================================================== */
LUAMOD_API int luaopen_os (lua_State *L) {
luaL_newlib(L, syslib);
return 1;
}

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/*
** $Id: lparser.h,v 1.70.1.1 2013/04/12 18:48:47 roberto Exp $
** Lua Parser
** See Copyright Notice in lua.h
*/
#ifndef lparser_h
#define lparser_h
#include "llimits.h"
#include "lobject.h"
#include "lzio.h"
/*
** Expression descriptor
*/
typedef enum {
VVOID, /* no value */
VNIL,
VTRUE,
VFALSE,
VK, /* info = index of constant in `k' */
VKNUM, /* nval = numerical value */
VNONRELOC, /* info = result register */
VLOCAL, /* info = local register */
VUPVAL, /* info = index of upvalue in 'upvalues' */
VINDEXED, /* t = table register/upvalue; idx = index R/K */
VJMP, /* info = instruction pc */
VRELOCABLE, /* info = instruction pc */
VCALL, /* info = instruction pc */
VVARARG /* info = instruction pc */
} expkind;
#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED)
#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL)
typedef struct expdesc {
expkind k;
union {
struct { /* for indexed variables (VINDEXED) */
short idx; /* index (R/K) */
lu_byte t; /* table (register or upvalue) */
lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */
} ind;
int info; /* for generic use */
lua_Number nval; /* for VKNUM */
} u;
int t; /* patch list of `exit when true' */
int f; /* patch list of `exit when false' */
} expdesc;
/* description of active local variable */
typedef struct Vardesc {
short idx; /* variable index in stack */
} Vardesc;
/* description of pending goto statements and label statements */
typedef struct Labeldesc {
TString *name; /* label identifier */
int pc; /* position in code */
int line; /* line where it appeared */
lu_byte nactvar; /* local level where it appears in current block */
} Labeldesc;
/* list of labels or gotos */
typedef struct Labellist {
Labeldesc *arr; /* array */
int n; /* number of entries in use */
int size; /* array size */
} Labellist;
/* dynamic structures used by the parser */
typedef struct Dyndata {
struct { /* list of active local variables */
Vardesc *arr;
int n;
int size;
} actvar;
Labellist gt; /* list of pending gotos */
Labellist label; /* list of active labels */
} Dyndata;
/* control of blocks */
struct BlockCnt; /* defined in lparser.c */
/* state needed to generate code for a given function */
typedef struct FuncState {
Proto *f; /* current function header */
Table *h; /* table to find (and reuse) elements in `k' */
struct FuncState *prev; /* enclosing function */
struct LexState *ls; /* lexical state */
struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to `ncode') */
int lasttarget; /* 'label' of last 'jump label' */
int jpc; /* list of pending jumps to `pc' */
int nk; /* number of elements in `k' */
int np; /* number of elements in `p' */
int firstlocal; /* index of first local var (in Dyndata array) */
short nlocvars; /* number of elements in 'f->locvars' */
lu_byte nactvar; /* number of active local variables */
lu_byte nups; /* number of upvalues */
lu_byte freereg; /* first free register */
} FuncState;
LUAI_FUNC Closure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
Dyndata *dyd, const char *name, int firstchar);
#endif

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/*
** $Id: lstate.c,v 2.99.1.2 2013/11/08 17:45:31 roberto Exp $
** Global State
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#include <string.h>
#define lstate_c
#define LUA_CORE
#include "lua.h"
#include "lapi.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "llex.h"
#include "lmem.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#if !defined(LUAI_GCPAUSE)
#define LUAI_GCPAUSE 200 /* 200% */
#endif
#if !defined(LUAI_GCMAJOR)
#define LUAI_GCMAJOR 200 /* 200% */
#endif
#if !defined(LUAI_GCMUL)
#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
#endif
#define MEMERRMSG "not enough memory"
/*
** a macro to help the creation of a unique random seed when a state is
** created; the seed is used to randomize hashes.
*/
#if !defined(luai_makeseed)
#include <time.h>
#define luai_makeseed() cast(unsigned int, time(NULL))
#endif
/*
** thread state + extra space
*/
typedef struct LX {
#if defined(LUAI_EXTRASPACE)
char buff[LUAI_EXTRASPACE];
#endif
lua_State l;
} LX;
/*
** Main thread combines a thread state and the global state
*/
typedef struct LG {
LX l;
global_State g;
} LG;
#define fromstate(L) (cast(LX *, cast(lu_byte *, (L)) - offsetof(LX, l)))
/*
** Compute an initial seed as random as possible. In ANSI, rely on
** Address Space Layout Randomization (if present) to increase
** randomness..
*/
#define addbuff(b,p,e) \
{ size_t t = cast(size_t, e); \
memcpy(buff + p, &t, sizeof(t)); p += sizeof(t); }
static unsigned int makeseed (lua_State *L) {
char buff[4 * sizeof(size_t)];
unsigned int h = luai_makeseed();
int p = 0;
addbuff(buff, p, L); /* heap variable */
addbuff(buff, p, &h); /* local variable */
addbuff(buff, p, luaO_nilobject); /* global variable */
addbuff(buff, p, &lua_newstate); /* public function */
lua_assert(p == sizeof(buff));
return luaS_hash(buff, p, h);
}
/*
** set GCdebt to a new value keeping the value (totalbytes + GCdebt)
** invariant
*/
void luaE_setdebt (global_State *g, l_mem debt) {
g->totalbytes -= (debt - g->GCdebt);
g->GCdebt = debt;
}
CallInfo *luaE_extendCI (lua_State *L) {
CallInfo *ci = luaM_new(L, CallInfo);
lua_assert(L->ci->next == NULL);
L->ci->next = ci;
ci->previous = L->ci;
ci->next = NULL;
return ci;
}
void luaE_freeCI (lua_State *L) {
CallInfo *ci = L->ci;
CallInfo *next = ci->next;
ci->next = NULL;
while ((ci = next) != NULL) {
next = ci->next;
luaM_free(L, ci);
}
}
static void stack_init (lua_State *L1, lua_State *L) {
int i; CallInfo *ci;
/* initialize stack array */
L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue);
L1->stacksize = BASIC_STACK_SIZE;
for (i = 0; i < BASIC_STACK_SIZE; i++)
setnilvalue(L1->stack + i); /* erase new stack */
L1->top = L1->stack;
L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK;
/* initialize first ci */
ci = &L1->base_ci;
ci->next = ci->previous = NULL;
ci->callstatus = 0;
ci->func = L1->top;
setnilvalue(L1->top++); /* 'function' entry for this 'ci' */
ci->top = L1->top + LUA_MINSTACK;
L1->ci = ci;
}
static void freestack (lua_State *L) {
if (L->stack == NULL)
return; /* stack not completely built yet */
L->ci = &L->base_ci; /* free the entire 'ci' list */
luaE_freeCI(L);
luaM_freearray(L, L->stack, L->stacksize); /* free stack array */
}
/*
** Create registry table and its predefined values
*/
static void init_registry (lua_State *L, global_State *g) {
TValue mt;
/* create registry */
Table *registry = luaH_new(L);
sethvalue(L, &g->l_registry, registry);
luaH_resize(L, registry, LUA_RIDX_LAST, 0);
/* registry[LUA_RIDX_MAINTHREAD] = L */
setthvalue(L, &mt, L);
luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &mt);
/* registry[LUA_RIDX_GLOBALS] = table of globals */
sethvalue(L, &mt, luaH_new(L));
luaH_setint(L, registry, LUA_RIDX_GLOBALS, &mt);
}
/*
** open parts of the state that may cause memory-allocation errors
*/
static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L);
UNUSED(ud);
stack_init(L, L); /* init stack */
init_registry(L, g);
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
luaT_init(L);
luaX_init(L);
/* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaS_fix(g->memerrmsg); /* it should never be collected */
g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL);
luai_userstateopen(L);
}
/*
** preinitialize a state with consistent values without allocating
** any memory (to avoid errors)
*/
static void preinit_state (lua_State *L, global_State *g) {
G(L) = g;
L->stack = NULL;
L->ci = NULL;
L->stacksize = 0;
L->errorJmp = NULL;
L->nCcalls = 0;
L->hook = NULL;
L->hookmask = 0;
L->basehookcount = 0;
L->allowhook = 1;
resethookcount(L);
L->openupval = NULL;
L->nny = 1;
L->status = LUA_OK;
L->errfunc = 0;
}
static void close_state (lua_State *L) {
global_State *g = G(L);
luaF_close(L, L->stack); /* close all upvalues for this thread */
luaC_freeallobjects(L); /* collect all objects */
if (g->version) /* closing a fully built state? */
luai_userstateclose(L);
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
luaZ_freebuffer(L, &g->buff);
freestack(L);
lua_assert(gettotalbytes(g) == sizeof(LG));
(*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0); /* free main block */
}
LUA_API lua_State *lua_newthread (lua_State *L) {
lua_State *L1;
lua_lock(L);
luaC_checkGC(L);
L1 = &luaC_newobj(L, LUA_TTHREAD, sizeof(LX), NULL, offsetof(LX, l))->th;
setthvalue(L, L->top, L1);
api_incr_top(L);
preinit_state(L1, G(L));
L1->hookmask = L->hookmask;
L1->basehookcount = L->basehookcount;
L1->hook = L->hook;
resethookcount(L1);
luai_userstatethread(L, L1);
stack_init(L1, L); /* init stack */
lua_unlock(L);
return L1;
}
void luaE_freethread (lua_State *L, lua_State *L1) {
LX *l = fromstate(L1);
luaF_close(L1, L1->stack); /* close all upvalues for this thread */
lua_assert(L1->openupval == NULL);
luai_userstatefree(L, L1);
freestack(L1);
luaM_free(L, l);
}
LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
int i;
lua_State *L;
global_State *g;
LG *l = cast(LG *, (*f)(ud, NULL, LUA_TTHREAD, sizeof(LG)));
if (l == NULL) return NULL;
L = &l->l.l;
g = &l->g;
L->next = NULL;
L->tt = LUA_TTHREAD;
g->currentwhite = bit2mask(WHITE0BIT, FIXEDBIT);
L->marked = luaC_white(g);
g->gckind = KGC_NORMAL;
preinit_state(L, g);
g->frealloc = f;
g->ud = ud;
g->mainthread = L;
g->seed = makeseed(L);
g->uvhead.u.l.prev = &g->uvhead;
g->uvhead.u.l.next = &g->uvhead;
g->gcrunning = 0; /* no GC while building state */
g->GCestimate = 0;
g->strt.size = 0;
g->strt.nuse = 0;
g->strt.hash = NULL;
setnilvalue(&g->l_registry);
luaZ_initbuffer(L, &g->buff);
g->panic = NULL;
g->version = NULL;
g->gcstate = GCSpause;
g->allgc = NULL;
g->finobj = NULL;
g->tobefnz = NULL;
g->sweepgc = g->sweepfin = NULL;
g->gray = g->grayagain = NULL;
g->weak = g->ephemeron = g->allweak = NULL;
g->totalbytes = sizeof(LG);
g->GCdebt = 0;
g->gcpause = LUAI_GCPAUSE;
g->gcmajorinc = LUAI_GCMAJOR;
g->gcstepmul = LUAI_GCMUL;
for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
/* memory allocation error: free partial state */
close_state(L);
L = NULL;
}
return L;
}
LUA_API void lua_close (lua_State *L) {
L = G(L)->mainthread; /* only the main thread can be closed */
lua_lock(L);
close_state(L);
}

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/*
** $Id: lstate.h,v 2.82.1.1 2013/04/12 18:48:47 roberto Exp $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lua.h"
#include "lobject.h"
#include "ltm.h"
#include "lzio.h"
/*
** Some notes about garbage-collected objects: All objects in Lua must
** be kept somehow accessible until being freed.
**
** Lua keeps most objects linked in list g->allgc. The link uses field
** 'next' of the CommonHeader.
**
** Strings are kept in several lists headed by the array g->strt.hash.
**
** Open upvalues are not subject to independent garbage collection. They
** are collected together with their respective threads. Lua keeps a
** double-linked list with all open upvalues (g->uvhead) so that it can
** mark objects referred by them. (They are always gray, so they must
** be remarked in the atomic step. Usually their contents would be marked
** when traversing the respective threads, but the thread may already be
** dead, while the upvalue is still accessible through closures.)
**
** Objects with finalizers are kept in the list g->finobj.
**
** The list g->tobefnz links all objects being finalized.
*/
struct lua_longjmp; /* defined in ldo.c */
/* extra stack space to handle TM calls and some other extras */
#define EXTRA_STACK 5
#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
/* kinds of Garbage Collection */
#define KGC_NORMAL 0
#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */
#define KGC_GEN 2 /* generational collection */
typedef struct stringtable {
GCObject **hash;
lu_int32 nuse; /* number of elements */
int size;
} stringtable;
/*
** information about a call
*/
typedef struct CallInfo {
StkId func; /* function index in the stack */
StkId top; /* top for this function */
struct CallInfo *previous, *next; /* dynamic call link */
short nresults; /* expected number of results from this function */
lu_byte callstatus;
ptrdiff_t extra;
union {
struct { /* only for Lua functions */
StkId base; /* base for this function */
const Instruction *savedpc;
} l;
struct { /* only for C functions */
int ctx; /* context info. in case of yields */
lua_CFunction k; /* continuation in case of yields */
ptrdiff_t old_errfunc;
lu_byte old_allowhook;
lu_byte status;
} c;
} u;
} CallInfo;
/*
** Bits in CallInfo status
*/
#define CIST_LUA (1<<0) /* call is running a Lua function */
#define CIST_HOOKED (1<<1) /* call is running a debug hook */
#define CIST_REENTRY (1<<2) /* call is running on same invocation of
luaV_execute of previous call */
#define CIST_YIELDED (1<<3) /* call reentered after suspension */
#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */
#define CIST_STAT (1<<5) /* call has an error status (pcall) */
#define CIST_TAIL (1<<6) /* call was tail called */
#define CIST_HOOKYIELD (1<<7) /* last hook called yielded */
#define isLua(ci) ((ci)->callstatus & CIST_LUA)
/*
** `global state', shared by all threads of this state
*/
typedef struct global_State {
lua_Alloc frealloc; /* function to reallocate memory */
void *ud; /* auxiliary data to `frealloc' */
lu_mem totalbytes; /* number of bytes currently allocated - GCdebt */
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
lu_mem GCmemtrav; /* memory traversed by the GC */
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
stringtable strt; /* hash table for strings */
TValue l_registry;
unsigned int seed; /* randomized seed for hashes */
lu_byte currentwhite;
lu_byte gcstate; /* state of garbage collector */
lu_byte gckind; /* kind of GC running */
lu_byte gcrunning; /* true if GC is running */
int sweepstrgc; /* position of sweep in `strt' */
GCObject *allgc; /* list of all collectable objects */
GCObject *finobj; /* list of collectable objects with finalizers */
GCObject **sweepgc; /* current position of sweep in list 'allgc' */
GCObject **sweepfin; /* current position of sweep in list 'finobj' */
GCObject *gray; /* list of gray objects */
GCObject *grayagain; /* list of objects to be traversed atomically */
GCObject *weak; /* list of tables with weak values */
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
GCObject *allweak; /* list of all-weak tables */
GCObject *tobefnz; /* list of userdata to be GC */
UpVal uvhead; /* head of double-linked list of all open upvalues */
Mbuffer buff; /* temporary buffer for string concatenation */
int gcpause; /* size of pause between successive GCs */
int gcmajorinc; /* pause between major collections (only in gen. mode) */
int gcstepmul; /* GC `granularity' */
lua_CFunction panic; /* to be called in unprotected errors */
struct lua_State *mainthread;
const lua_Number *version; /* pointer to version number */
TString *memerrmsg; /* memory-error message */
TString *tmname[TM_N]; /* array with tag-method names */
struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */
} global_State;
/*
** `per thread' state
*/
struct lua_State {
CommonHeader;
lu_byte status;
StkId top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
const Instruction *oldpc; /* last pc traced */
StkId stack_last; /* last free slot in the stack */
StkId stack; /* stack base */
int stacksize;
unsigned short nny; /* number of non-yieldable calls in stack */
unsigned short nCcalls; /* number of nested C calls */
lu_byte hookmask;
lu_byte allowhook;
int basehookcount;
int hookcount;
lua_Hook hook;
GCObject *openupval; /* list of open upvalues in this stack */
GCObject *gclist;
struct lua_longjmp *errorJmp; /* current error recover point */
ptrdiff_t errfunc; /* current error handling function (stack index) */
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
};
#define G(L) (L->l_G)
/*
** Union of all collectable objects
*/
union GCObject {
GCheader gch; /* common header */
union TString ts;
union Udata u;
union Closure cl;
struct Table h;
struct Proto p;
struct UpVal uv;
struct lua_State th; /* thread */
};
#define gch(o) (&(o)->gch)
/* macros to convert a GCObject into a specific value */
#define rawgco2ts(o) \
check_exp(novariant((o)->gch.tt) == LUA_TSTRING, &((o)->ts))
#define gco2ts(o) (&rawgco2ts(o)->tsv)
#define rawgco2u(o) check_exp((o)->gch.tt == LUA_TUSERDATA, &((o)->u))
#define gco2u(o) (&rawgco2u(o)->uv)
#define gco2lcl(o) check_exp((o)->gch.tt == LUA_TLCL, &((o)->cl.l))
#define gco2ccl(o) check_exp((o)->gch.tt == LUA_TCCL, &((o)->cl.c))
#define gco2cl(o) \
check_exp(novariant((o)->gch.tt) == LUA_TFUNCTION, &((o)->cl))
#define gco2t(o) check_exp((o)->gch.tt == LUA_TTABLE, &((o)->h))
#define gco2p(o) check_exp((o)->gch.tt == LUA_TPROTO, &((o)->p))
#define gco2uv(o) check_exp((o)->gch.tt == LUA_TUPVAL, &((o)->uv))
#define gco2th(o) check_exp((o)->gch.tt == LUA_TTHREAD, &((o)->th))
/* macro to convert any Lua object into a GCObject */
#define obj2gco(v) (cast(GCObject *, (v)))
/* actual number of total bytes allocated */
#define gettotalbytes(g) ((g)->totalbytes + (g)->GCdebt)
LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
LUAI_FUNC void luaE_freeCI (lua_State *L);
#endif

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/*
** $Id: lstring.c,v 2.26.1.1 2013/04/12 18:48:47 roberto Exp $
** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h
*/
#include <string.h>
#define lstring_c
#define LUA_CORE
#include "lua.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
/*
** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to
** compute its hash
*/
#if !defined(LUAI_HASHLIMIT)
#define LUAI_HASHLIMIT 5
#endif
/*
** equality for long strings
*/
int luaS_eqlngstr (TString *a, TString *b) {
size_t len = a->tsv.len;
lua_assert(a->tsv.tt == LUA_TLNGSTR && b->tsv.tt == LUA_TLNGSTR);
return (a == b) || /* same instance or... */
((len == b->tsv.len) && /* equal length and ... */
(memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */
}
/*
** equality for strings
*/
int luaS_eqstr (TString *a, TString *b) {
return (a->tsv.tt == b->tsv.tt) &&
(a->tsv.tt == LUA_TSHRSTR ? eqshrstr(a, b) : luaS_eqlngstr(a, b));
}
unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
unsigned int h = seed ^ cast(unsigned int, l);
size_t l1;
size_t step = (l >> LUAI_HASHLIMIT) + 1;
for (l1 = l; l1 >= step; l1 -= step)
h = h ^ ((h<<5) + (h>>2) + cast_byte(str[l1 - 1]));
return h;
}
/*
** resizes the string table
*/
void luaS_resize (lua_State *L, int newsize) {
int i;
stringtable *tb = &G(L)->strt;
/* cannot resize while GC is traversing strings */
luaC_runtilstate(L, ~bitmask(GCSsweepstring));
if (newsize > tb->size) {
luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
for (i = tb->size; i < newsize; i++) tb->hash[i] = NULL;
}
/* rehash */
for (i=0; i<tb->size; i++) {
GCObject *p = tb->hash[i];
tb->hash[i] = NULL;
while (p) { /* for each node in the list */
GCObject *next = gch(p)->next; /* save next */
unsigned int h = lmod(gco2ts(p)->hash, newsize); /* new position */
gch(p)->next = tb->hash[h]; /* chain it */
tb->hash[h] = p;
resetoldbit(p); /* see MOVE OLD rule */
p = next;
}
}
if (newsize < tb->size) {
/* shrinking slice must be empty */
lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
}
tb->size = newsize;
}
/*
** creates a new string object
*/
static TString *createstrobj (lua_State *L, const char *str, size_t l,
int tag, unsigned int h, GCObject **list) {
TString *ts;
size_t totalsize; /* total size of TString object */
totalsize = sizeof(TString) + ((l + 1) * sizeof(char));
ts = &luaC_newobj(L, tag, totalsize, list, 0)->ts;
ts->tsv.len = l;
ts->tsv.hash = h;
ts->tsv.extra = 0;
memcpy(ts+1, str, l*sizeof(char));
((char *)(ts+1))[l] = '\0'; /* ending 0 */
return ts;
}
/*
** creates a new short string, inserting it into string table
*/
static TString *newshrstr (lua_State *L, const char *str, size_t l,
unsigned int h) {
GCObject **list; /* (pointer to) list where it will be inserted */
stringtable *tb = &G(L)->strt;
TString *s;
if (tb->nuse >= cast(lu_int32, tb->size) && tb->size <= MAX_INT/2)
luaS_resize(L, tb->size*2); /* too crowded */
list = &tb->hash[lmod(h, tb->size)];
s = createstrobj(L, str, l, LUA_TSHRSTR, h, list);
tb->nuse++;
return s;
}
/*
** checks whether short string exists and reuses it or creates a new one
*/
static TString *internshrstr (lua_State *L, const char *str, size_t l) {
GCObject *o;
global_State *g = G(L);
unsigned int h = luaS_hash(str, l, g->seed);
for (o = g->strt.hash[lmod(h, g->strt.size)];
o != NULL;
o = gch(o)->next) {
TString *ts = rawgco2ts(o);
if (h == ts->tsv.hash &&
l == ts->tsv.len &&
(memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
if (isdead(G(L), o)) /* string is dead (but was not collected yet)? */
changewhite(o); /* resurrect it */
return ts;
}
}
return newshrstr(L, str, l, h); /* not found; create a new string */
}
/*
** new string (with explicit length)
*/
TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
if (l <= LUAI_MAXSHORTLEN) /* short string? */
return internshrstr(L, str, l);
else {
if (l + 1 > (MAX_SIZET - sizeof(TString))/sizeof(char))
luaM_toobig(L);
return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed, NULL);
}
}
/*
** new zero-terminated string
*/
TString *luaS_new (lua_State *L, const char *str) {
return luaS_newlstr(L, str, strlen(str));
}
Udata *luaS_newudata (lua_State *L, size_t s, Table *e) {
Udata *u;
if (s > MAX_SIZET - sizeof(Udata))
luaM_toobig(L);
u = &luaC_newobj(L, LUA_TUSERDATA, sizeof(Udata) + s, NULL, 0)->u;
u->uv.len = s;
u->uv.metatable = NULL;
u->uv.env = e;
return u;
}

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@ -0,0 +1,46 @@
/*
** $Id: lstring.h,v 1.49.1.1 2013/04/12 18:48:47 roberto Exp $
** String table (keep all strings handled by Lua)
** See Copyright Notice in lua.h
*/
#ifndef lstring_h
#define lstring_h
#include "lgc.h"
#include "lobject.h"
#include "lstate.h"
#define sizestring(s) (sizeof(union TString)+((s)->len+1)*sizeof(char))
#define sizeudata(u) (sizeof(union Udata)+(u)->len)
#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
(sizeof(s)/sizeof(char))-1))
#define luaS_fix(s) l_setbit((s)->tsv.marked, FIXEDBIT)
/*
** test whether a string is a reserved word
*/
#define isreserved(s) ((s)->tsv.tt == LUA_TSHRSTR && (s)->tsv.extra > 0)
/*
** equality for short strings, which are always internalized
*/
#define eqshrstr(a,b) check_exp((a)->tsv.tt == LUA_TSHRSTR, (a) == (b))
LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
LUAI_FUNC int luaS_eqstr (TString *a, TString *b);
LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
#endif

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/*
** $Id: ltable.c,v 2.72.1.1 2013/04/12 18:48:47 roberto Exp $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
/*
** Implementation of tables (aka arrays, objects, or hash tables).
** Tables keep its elements in two parts: an array part and a hash part.
** Non-negative integer keys are all candidates to be kept in the array
** part. The actual size of the array is the largest `n' such that at
** least half the slots between 0 and n are in use.
** Hash uses a mix of chained scatter table with Brent's variation.
** A main invariant of these tables is that, if an element is not
** in its main position (i.e. the `original' position that its hash gives
** to it), then the colliding element is in its own main position.
** Hence even when the load factor reaches 100%, performance remains good.
*/
#include <string.h>
#define ltable_c
#define LUA_CORE
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "lvm.h"
/*
** max size of array part is 2^MAXBITS
*/
#if LUAI_BITSINT >= 32
#define MAXBITS 30
#else
#define MAXBITS (LUAI_BITSINT-2)
#endif
#define MAXASIZE (1 << MAXBITS)
#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t))))
#define hashstr(t,str) hashpow2(t, (str)->tsv.hash)
#define hashboolean(t,p) hashpow2(t, p)
/*
** for some types, it is better to avoid modulus by power of 2, as
** they tend to have many 2 factors.
*/
#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
#define hashpointer(t,p) hashmod(t, IntPoint(p))
#define dummynode (&dummynode_)
#define isdummy(n) ((n) == dummynode)
static const Node dummynode_ = {
{NILCONSTANT}, /* value */
{{NILCONSTANT, NULL}} /* key */
};
/*
** hash for lua_Numbers
*/
static Node *hashnum (const Table *t, lua_Number n) {
int i;
luai_hashnum(i, n);
if (i < 0) {
if (cast(unsigned int, i) == 0u - i) /* use unsigned to avoid overflows */
i = 0; /* handle INT_MIN */
i = -i; /* must be a positive value */
}
return hashmod(t, i);
}
/*
** returns the `main' position of an element in a table (that is, the index
** of its hash value)
*/
static Node *mainposition (const Table *t, const TValue *key) {
switch (ttype(key)) {
case LUA_TNUMBER:
return hashnum(t, nvalue(key));
case LUA_TLNGSTR: {
TString *s = rawtsvalue(key);
if (s->tsv.extra == 0) { /* no hash? */
s->tsv.hash = luaS_hash(getstr(s), s->tsv.len, s->tsv.hash);
s->tsv.extra = 1; /* now it has its hash */
}
return hashstr(t, rawtsvalue(key));
}
case LUA_TSHRSTR:
return hashstr(t, rawtsvalue(key));
case LUA_TBOOLEAN:
return hashboolean(t, bvalue(key));
case LUA_TLIGHTUSERDATA:
return hashpointer(t, pvalue(key));
case LUA_TLCF:
return hashpointer(t, fvalue(key));
default:
return hashpointer(t, gcvalue(key));
}
}
/*
** returns the index for `key' if `key' is an appropriate key to live in
** the array part of the table, -1 otherwise.
*/
static int arrayindex (const TValue *key) {
if (ttisnumber(key)) {
lua_Number n = nvalue(key);
int k;
lua_number2int(k, n);
if (luai_numeq(cast_num(k), n))
return k;
}
return -1; /* `key' did not match some condition */
}
/*
** returns the index of a `key' for table traversals. First goes all
** elements in the array part, then elements in the hash part. The
** beginning of a traversal is signaled by -1.
*/
static int findindex (lua_State *L, Table *t, StkId key) {
int i;
if (ttisnil(key)) return -1; /* first iteration */
i = arrayindex(key);
if (0 < i && i <= t->sizearray) /* is `key' inside array part? */
return i-1; /* yes; that's the index (corrected to C) */
else {
Node *n = mainposition(t, key);
for (;;) { /* check whether `key' is somewhere in the chain */
/* key may be dead already, but it is ok to use it in `next' */
if (luaV_rawequalobj(gkey(n), key) ||
(ttisdeadkey(gkey(n)) && iscollectable(key) &&
deadvalue(gkey(n)) == gcvalue(key))) {
i = cast_int(n - gnode(t, 0)); /* key index in hash table */
/* hash elements are numbered after array ones */
return i + t->sizearray;
}
else n = gnext(n);
if (n == NULL)
luaG_runerror(L, "invalid key to " LUA_QL("next")); /* key not found */
}
}
}
int luaH_next (lua_State *L, Table *t, StkId key) {
int i = findindex(L, t, key); /* find original element */
for (i++; i < t->sizearray; i++) { /* try first array part */
if (!ttisnil(&t->array[i])) { /* a non-nil value? */
setnvalue(key, cast_num(i+1));
setobj2s(L, key+1, &t->array[i]);
return 1;
}
}
for (i -= t->sizearray; i < sizenode(t); i++) { /* then hash part */
if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */
setobj2s(L, key, gkey(gnode(t, i)));
setobj2s(L, key+1, gval(gnode(t, i)));
return 1;
}
}
return 0; /* no more elements */
}
/*
** {=============================================================
** Rehash
** ==============================================================
*/
static int computesizes (int nums[], int *narray) {
int i;
int twotoi; /* 2^i */
int a = 0; /* number of elements smaller than 2^i */
int na = 0; /* number of elements to go to array part */
int n = 0; /* optimal size for array part */
for (i = 0, twotoi = 1; twotoi/2 < *narray; i++, twotoi *= 2) {
if (nums[i] > 0) {
a += nums[i];
if (a > twotoi/2) { /* more than half elements present? */
n = twotoi; /* optimal size (till now) */
na = a; /* all elements smaller than n will go to array part */
}
}
if (a == *narray) break; /* all elements already counted */
}
*narray = n;
lua_assert(*narray/2 <= na && na <= *narray);
return na;
}
static int countint (const TValue *key, int *nums) {
int k = arrayindex(key);
if (0 < k && k <= MAXASIZE) { /* is `key' an appropriate array index? */
nums[luaO_ceillog2(k)]++; /* count as such */
return 1;
}
else
return 0;
}
static int numusearray (const Table *t, int *nums) {
int lg;
int ttlg; /* 2^lg */
int ause = 0; /* summation of `nums' */
int i = 1; /* count to traverse all array keys */
for (lg=0, ttlg=1; lg<=MAXBITS; lg++, ttlg*=2) { /* for each slice */
int lc = 0; /* counter */
int lim = ttlg;
if (lim > t->sizearray) {
lim = t->sizearray; /* adjust upper limit */
if (i > lim)
break; /* no more elements to count */
}
/* count elements in range (2^(lg-1), 2^lg] */
for (; i <= lim; i++) {
if (!ttisnil(&t->array[i-1]))
lc++;
}
nums[lg] += lc;
ause += lc;
}
return ause;
}
static int numusehash (const Table *t, int *nums, int *pnasize) {
int totaluse = 0; /* total number of elements */
int ause = 0; /* summation of `nums' */
int i = sizenode(t);
while (i--) {
Node *n = &t->node[i];
if (!ttisnil(gval(n))) {
ause += countint(gkey(n), nums);
totaluse++;
}
}
*pnasize += ause;
return totaluse;
}
static void setarrayvector (lua_State *L, Table *t, int size) {
int i;
luaM_reallocvector(L, t->array, t->sizearray, size, TValue);
for (i=t->sizearray; i<size; i++)
setnilvalue(&t->array[i]);
t->sizearray = size;
}
static void setnodevector (lua_State *L, Table *t, int size) {
int lsize;
if (size == 0) { /* no elements to hash part? */
t->node = cast(Node *, dummynode); /* use common `dummynode' */
lsize = 0;
}
else {
int i;
lsize = luaO_ceillog2(size);
if (lsize > MAXBITS)
luaG_runerror(L, "table overflow");
size = twoto(lsize);
t->node = luaM_newvector(L, size, Node);
for (i=0; i<size; i++) {
Node *n = gnode(t, i);
gnext(n) = NULL;
setnilvalue(gkey(n));
setnilvalue(gval(n));
}
}
t->lsizenode = cast_byte(lsize);
t->lastfree = gnode(t, size); /* all positions are free */
}
void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize) {
int i;
int oldasize = t->sizearray;
int oldhsize = t->lsizenode;
Node *nold = t->node; /* save old hash ... */
if (nasize > oldasize) /* array part must grow? */
setarrayvector(L, t, nasize);
/* create new hash part with appropriate size */
setnodevector(L, t, nhsize);
if (nasize < oldasize) { /* array part must shrink? */
t->sizearray = nasize;
/* re-insert elements from vanishing slice */
for (i=nasize; i<oldasize; i++) {
if (!ttisnil(&t->array[i]))
luaH_setint(L, t, i + 1, &t->array[i]);
}
/* shrink array */
luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
}
/* re-insert elements from hash part */
for (i = twoto(oldhsize) - 1; i >= 0; i--) {
Node *old = nold+i;
if (!ttisnil(gval(old))) {
/* doesn't need barrier/invalidate cache, as entry was
already present in the table */
setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old));
}
}
if (!isdummy(nold))
luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old array */
}
void luaH_resizearray (lua_State *L, Table *t, int nasize) {
int nsize = isdummy(t->node) ? 0 : sizenode(t);
luaH_resize(L, t, nasize, nsize);
}
static void rehash (lua_State *L, Table *t, const TValue *ek) {
int nasize, na;
int nums[MAXBITS+1]; /* nums[i] = number of keys with 2^(i-1) < k <= 2^i */
int i;
int totaluse;
for (i=0; i<=MAXBITS; i++) nums[i] = 0; /* reset counts */
nasize = numusearray(t, nums); /* count keys in array part */
totaluse = nasize; /* all those keys are integer keys */
totaluse += numusehash(t, nums, &nasize); /* count keys in hash part */
/* count extra key */
nasize += countint(ek, nums);
totaluse++;
/* compute new size for array part */
na = computesizes(nums, &nasize);
/* resize the table to new computed sizes */
luaH_resize(L, t, nasize, totaluse - na);
}
/*
** }=============================================================
*/
Table *luaH_new (lua_State *L) {
Table *t = &luaC_newobj(L, LUA_TTABLE, sizeof(Table), NULL, 0)->h;
t->metatable = NULL;
t->flags = cast_byte(~0);
t->array = NULL;
t->sizearray = 0;
setnodevector(L, t, 0);
return t;
}
void luaH_free (lua_State *L, Table *t) {
if (!isdummy(t->node))
luaM_freearray(L, t->node, cast(size_t, sizenode(t)));
luaM_freearray(L, t->array, t->sizearray);
luaM_free(L, t);
}
static Node *getfreepos (Table *t) {
while (t->lastfree > t->node) {
t->lastfree--;
if (ttisnil(gkey(t->lastfree)))
return t->lastfree;
}
return NULL; /* could not find a free place */
}
/*
** inserts a new key into a hash table; first, check whether key's main
** position is free. If not, check whether colliding node is in its main
** position or not: if it is not, move colliding node to an empty place and
** put new key in its main position; otherwise (colliding node is in its main
** position), new key goes to an empty position.
*/
TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
Node *mp;
if (ttisnil(key)) luaG_runerror(L, "table index is nil");
else if (ttisnumber(key) && luai_numisnan(L, nvalue(key)))
luaG_runerror(L, "table index is NaN");
mp = mainposition(t, key);
if (!ttisnil(gval(mp)) || isdummy(mp)) { /* main position is taken? */
Node *othern;
Node *n = getfreepos(t); /* get a free place */
if (n == NULL) { /* cannot find a free place? */
rehash(L, t, key); /* grow table */
/* whatever called 'newkey' take care of TM cache and GC barrier */
return luaH_set(L, t, key); /* insert key into grown table */
}
lua_assert(!isdummy(n));
othern = mainposition(t, gkey(mp));
if (othern != mp) { /* is colliding node out of its main position? */
/* yes; move colliding node into free position */
while (gnext(othern) != mp) othern = gnext(othern); /* find previous */
gnext(othern) = n; /* redo the chain with `n' in place of `mp' */
*n = *mp; /* copy colliding node into free pos. (mp->next also goes) */
gnext(mp) = NULL; /* now `mp' is free */
setnilvalue(gval(mp));
}
else { /* colliding node is in its own main position */
/* new node will go into free position */
gnext(n) = gnext(mp); /* chain new position */
gnext(mp) = n;
mp = n;
}
}
setobj2t(L, gkey(mp), key);
luaC_barrierback(L, obj2gco(t), key);
lua_assert(ttisnil(gval(mp)));
return gval(mp);
}
/*
** search function for integers
*/
const TValue *luaH_getint (Table *t, int key) {
/* (1 <= key && key <= t->sizearray) */
if (cast(unsigned int, key-1) < cast(unsigned int, t->sizearray))
return &t->array[key-1];
else {
lua_Number nk = cast_num(key);
Node *n = hashnum(t, nk);
do { /* check whether `key' is somewhere in the chain */
if (ttisnumber(gkey(n)) && luai_numeq(nvalue(gkey(n)), nk))
return gval(n); /* that's it */
else n = gnext(n);
} while (n);
return luaO_nilobject;
}
}
/*
** search function for short strings
*/
const TValue *luaH_getstr (Table *t, TString *key) {
Node *n = hashstr(t, key);
lua_assert(key->tsv.tt == LUA_TSHRSTR);
do { /* check whether `key' is somewhere in the chain */
if (ttisshrstring(gkey(n)) && eqshrstr(rawtsvalue(gkey(n)), key))
return gval(n); /* that's it */
else n = gnext(n);
} while (n);
return luaO_nilobject;
}
/*
** main search function
*/
const TValue *luaH_get (Table *t, const TValue *key) {
switch (ttype(key)) {
case LUA_TSHRSTR: return luaH_getstr(t, rawtsvalue(key));
case LUA_TNIL: return luaO_nilobject;
case LUA_TNUMBER: {
int k;
lua_Number n = nvalue(key);
lua_number2int(k, n);
if (luai_numeq(cast_num(k), n)) /* index is int? */
return luaH_getint(t, k); /* use specialized version */
/* else go through */
}
default: {
Node *n = mainposition(t, key);
do { /* check whether `key' is somewhere in the chain */
if (luaV_rawequalobj(gkey(n), key))
return gval(n); /* that's it */
else n = gnext(n);
} while (n);
return luaO_nilobject;
}
}
}
/*
** beware: when using this function you probably need to check a GC
** barrier and invalidate the TM cache.
*/
TValue *luaH_set (lua_State *L, Table *t, const TValue *key) {
const TValue *p = luaH_get(t, key);
if (p != luaO_nilobject)
return cast(TValue *, p);
else return luaH_newkey(L, t, key);
}
void luaH_setint (lua_State *L, Table *t, int key, TValue *value) {
const TValue *p = luaH_getint(t, key);
TValue *cell;
if (p != luaO_nilobject)
cell = cast(TValue *, p);
else {
TValue k;
setnvalue(&k, cast_num(key));
cell = luaH_newkey(L, t, &k);
}
setobj2t(L, cell, value);
}
static int unbound_search (Table *t, unsigned int j) {
unsigned int i = j; /* i is zero or a present index */
j++;
/* find `i' and `j' such that i is present and j is not */
while (!ttisnil(luaH_getint(t, j))) {
i = j;
j *= 2;
if (j > cast(unsigned int, MAX_INT)) { /* overflow? */
/* table was built with bad purposes: resort to linear search */
i = 1;
while (!ttisnil(luaH_getint(t, i))) i++;
return i - 1;
}
}
/* now do a binary search between them */
while (j - i > 1) {
unsigned int m = (i+j)/2;
if (ttisnil(luaH_getint(t, m))) j = m;
else i = m;
}
return i;
}
/*
** Try to find a boundary in table `t'. A `boundary' is an integer index
** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
*/
int luaH_getn (Table *t) {
unsigned int j = t->sizearray;
if (j > 0 && ttisnil(&t->array[j - 1])) {
/* there is a boundary in the array part: (binary) search for it */
unsigned int i = 0;
while (j - i > 1) {
unsigned int m = (i+j)/2;
if (ttisnil(&t->array[m - 1])) j = m;
else i = m;
}
return i;
}
/* else must find a boundary in hash part */
else if (isdummy(t->node)) /* hash part is empty? */
return j; /* that is easy... */
else return unbound_search(t, j);
}
#if defined(LUA_DEBUG)
Node *luaH_mainposition (const Table *t, const TValue *key) {
return mainposition(t, key);
}
int luaH_isdummy (Node *n) { return isdummy(n); }
#endif

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/*
** $Id: ltable.h,v 2.16.1.2 2013/08/30 15:49:41 roberto Exp $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
#ifndef ltable_h
#define ltable_h
#include "lobject.h"
#define gnode(t,i) (&(t)->node[i])
#define gkey(n) (&(n)->i_key.tvk)
#define gval(n) (&(n)->i_val)
#define gnext(n) ((n)->i_key.nk.next)
#define invalidateTMcache(t) ((t)->flags = 0)
/* returns the key, given the value of a table entry */
#define keyfromval(v) \
(gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
LUAI_FUNC const TValue *luaH_getint (Table *t, int key);
LUAI_FUNC void luaH_setint (lua_State *L, Table *t, int key, TValue *value);
LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key);
LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key);
LUAI_FUNC Table *luaH_new (lua_State *L);
LUAI_FUNC void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize);
LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, int nasize);
LUAI_FUNC void luaH_free (lua_State *L, Table *t);
LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
LUAI_FUNC int luaH_getn (Table *t);
#if defined(LUA_DEBUG)
LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
LUAI_FUNC int luaH_isdummy (Node *n);
#endif
#endif

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/*
** $Id: ltablib.c,v 1.65.1.1 2013/04/12 18:48:47 roberto Exp $
** Library for Table Manipulation
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#define ltablib_c
#define LUA_LIB
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#define aux_getn(L,n) (luaL_checktype(L, n, LUA_TTABLE), luaL_len(L, n))
#if defined(LUA_COMPAT_MAXN)
static int maxn (lua_State *L) {
lua_Number max = 0;
luaL_checktype(L, 1, LUA_TTABLE);
lua_pushnil(L); /* first key */
while (lua_next(L, 1)) {
lua_pop(L, 1); /* remove value */
if (lua_type(L, -1) == LUA_TNUMBER) {
lua_Number v = lua_tonumber(L, -1);
if (v > max) max = v;
}
}
lua_pushnumber(L, max);
return 1;
}
#endif
static int tinsert (lua_State *L) {
int e = aux_getn(L, 1) + 1; /* first empty element */
int pos; /* where to insert new element */
switch (lua_gettop(L)) {
case 2: { /* called with only 2 arguments */
pos = e; /* insert new element at the end */
break;
}
case 3: {
int i;
pos = luaL_checkint(L, 2); /* 2nd argument is the position */
luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds");
for (i = e; i > pos; i--) { /* move up elements */
lua_rawgeti(L, 1, i-1);
lua_rawseti(L, 1, i); /* t[i] = t[i-1] */
}
break;
}
default: {
return luaL_error(L, "wrong number of arguments to " LUA_QL("insert"));
}
}
lua_rawseti(L, 1, pos); /* t[pos] = v */
return 0;
}
static int tremove (lua_State *L) {
int size = aux_getn(L, 1);
int pos = luaL_optint(L, 2, size);
if (pos != size) /* validate 'pos' if given */
luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds");
lua_rawgeti(L, 1, pos); /* result = t[pos] */
for ( ; pos < size; pos++) {
lua_rawgeti(L, 1, pos+1);
lua_rawseti(L, 1, pos); /* t[pos] = t[pos+1] */
}
lua_pushnil(L);
lua_rawseti(L, 1, pos); /* t[pos] = nil */
return 1;
}
static void addfield (lua_State *L, luaL_Buffer *b, int i) {
lua_rawgeti(L, 1, i);
if (!lua_isstring(L, -1))
luaL_error(L, "invalid value (%s) at index %d in table for "
LUA_QL("concat"), luaL_typename(L, -1), i);
luaL_addvalue(b);
}
static int tconcat (lua_State *L) {
luaL_Buffer b;
size_t lsep;
int i, last;
const char *sep = luaL_optlstring(L, 2, "", &lsep);
luaL_checktype(L, 1, LUA_TTABLE);
i = luaL_optint(L, 3, 1);
last = luaL_opt(L, luaL_checkint, 4, luaL_len(L, 1));
luaL_buffinit(L, &b);
for (; i < last; i++) {
addfield(L, &b, i);
luaL_addlstring(&b, sep, lsep);
}
if (i == last) /* add last value (if interval was not empty) */
addfield(L, &b, i);
luaL_pushresult(&b);
return 1;
}
/*
** {======================================================
** Pack/unpack
** =======================================================
*/
static int pack (lua_State *L) {
int n = lua_gettop(L); /* number of elements to pack */
lua_createtable(L, n, 1); /* create result table */
lua_pushinteger(L, n);
lua_setfield(L, -2, "n"); /* t.n = number of elements */
if (n > 0) { /* at least one element? */
int i;
lua_pushvalue(L, 1);
lua_rawseti(L, -2, 1); /* insert first element */
lua_replace(L, 1); /* move table into index 1 */
for (i = n; i >= 2; i--) /* assign other elements */
lua_rawseti(L, 1, i);
}
return 1; /* return table */
}
static int unpack (lua_State *L) {
int i, e, n;
luaL_checktype(L, 1, LUA_TTABLE);
i = luaL_optint(L, 2, 1);
e = luaL_opt(L, luaL_checkint, 3, luaL_len(L, 1));
if (i > e) return 0; /* empty range */
n = e - i + 1; /* number of elements */
if (n <= 0 || !lua_checkstack(L, n)) /* n <= 0 means arith. overflow */
return luaL_error(L, "too many results to unpack");
lua_rawgeti(L, 1, i); /* push arg[i] (avoiding overflow problems) */
while (i++ < e) /* push arg[i + 1...e] */
lua_rawgeti(L, 1, i);
return n;
}
/* }====================================================== */
/*
** {======================================================
** Quicksort
** (based on `Algorithms in MODULA-3', Robert Sedgewick;
** Addison-Wesley, 1993.)
** =======================================================
*/
static void set2 (lua_State *L, int i, int j) {
lua_rawseti(L, 1, i);
lua_rawseti(L, 1, j);
}
static int sort_comp (lua_State *L, int a, int b) {
if (!lua_isnil(L, 2)) { /* function? */
int res;
lua_pushvalue(L, 2);
lua_pushvalue(L, a-1); /* -1 to compensate function */
lua_pushvalue(L, b-2); /* -2 to compensate function and `a' */
lua_call(L, 2, 1);
res = lua_toboolean(L, -1);
lua_pop(L, 1);
return res;
}
else /* a < b? */
return lua_compare(L, a, b, LUA_OPLT);
}
static void auxsort (lua_State *L, int l, int u) {
while (l < u) { /* for tail recursion */
int i, j;
/* sort elements a[l], a[(l+u)/2] and a[u] */
lua_rawgeti(L, 1, l);
lua_rawgeti(L, 1, u);
if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */
set2(L, l, u); /* swap a[l] - a[u] */
else
lua_pop(L, 2);
if (u-l == 1) break; /* only 2 elements */
i = (l+u)/2;
lua_rawgeti(L, 1, i);
lua_rawgeti(L, 1, l);
if (sort_comp(L, -2, -1)) /* a[i]<a[l]? */
set2(L, i, l);
else {
lua_pop(L, 1); /* remove a[l] */
lua_rawgeti(L, 1, u);
if (sort_comp(L, -1, -2)) /* a[u]<a[i]? */
set2(L, i, u);
else
lua_pop(L, 2);
}
if (u-l == 2) break; /* only 3 elements */
lua_rawgeti(L, 1, i); /* Pivot */
lua_pushvalue(L, -1);
lua_rawgeti(L, 1, u-1);
set2(L, i, u-1);
/* a[l] <= P == a[u-1] <= a[u], only need to sort from l+1 to u-2 */
i = l; j = u-1;
for (;;) { /* invariant: a[l..i] <= P <= a[j..u] */
/* repeat ++i until a[i] >= P */
while (lua_rawgeti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (i>=u) luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[i] */
}
/* repeat --j until a[j] <= P */
while (lua_rawgeti(L, 1, --j), sort_comp(L, -3, -1)) {
if (j<=l) luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[j] */
}
if (j<i) {
lua_pop(L, 3); /* pop pivot, a[i], a[j] */
break;
}
set2(L, i, j);
}
lua_rawgeti(L, 1, u-1);
lua_rawgeti(L, 1, i);
set2(L, u-1, i); /* swap pivot (a[u-1]) with a[i] */
/* a[l..i-1] <= a[i] == P <= a[i+1..u] */
/* adjust so that smaller half is in [j..i] and larger one in [l..u] */
if (i-l < u-i) {
j=l; i=i-1; l=i+2;
}
else {
j=i+1; i=u; u=j-2;
}
auxsort(L, j, i); /* call recursively the smaller one */
} /* repeat the routine for the larger one */
}
static int sort (lua_State *L) {
int n = aux_getn(L, 1);
luaL_checkstack(L, 40, ""); /* assume array is smaller than 2^40 */
if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
luaL_checktype(L, 2, LUA_TFUNCTION);
lua_settop(L, 2); /* make sure there is two arguments */
auxsort(L, 1, n);
return 0;
}
/* }====================================================== */
static const luaL_Reg tab_funcs[] = {
{"concat", tconcat},
#if defined(LUA_COMPAT_MAXN)
{"maxn", maxn},
#endif
{"insert", tinsert},
{"pack", pack},
{"unpack", unpack},
{"remove", tremove},
{"sort", sort},
{NULL, NULL}
};
LUAMOD_API int luaopen_table (lua_State *L) {
luaL_newlib(L, tab_funcs);
#if defined(LUA_COMPAT_UNPACK)
/* _G.unpack = table.unpack */
lua_getfield(L, -1, "unpack");
lua_setglobal(L, "unpack");
#endif
return 1;
}

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/*
** $Id: ltm.c,v 2.14.1.1 2013/04/12 18:48:47 roberto Exp $
** Tag methods
** See Copyright Notice in lua.h
*/
#include <string.h>
#define ltm_c
#define LUA_CORE
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
static const char udatatypename[] = "userdata";
LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {
"no value",
"nil", "boolean", udatatypename, "number",
"string", "table", "function", udatatypename, "thread",
"proto", "upval" /* these last two cases are used for tests only */
};
void luaT_init (lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__mode", "__len", "__eq",
"__add", "__sub", "__mul", "__div", "__mod",
"__pow", "__unm", "__lt", "__le",
"__concat", "__call"
};
int i;
for (i=0; i<TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaS_fix(G(L)->tmname[i]); /* never collect these names */
}
}
/*
** function to be used with macro "fasttm": optimized for absence of
** tag methods
*/
const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
const TValue *tm = luaH_getstr(events, ename);
lua_assert(event <= TM_EQ);
if (ttisnil(tm)) { /* no tag method? */
events->flags |= cast_byte(1u<<event); /* cache this fact */
return NULL;
}
else return tm;
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttypenv(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttypenv(o)];
}
return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
}

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/*
** $Id: ltm.h,v 2.11.1.1 2013/04/12 18:48:47 roberto Exp $
** Tag methods
** See Copyright Notice in lua.h
*/
#ifndef ltm_h
#define ltm_h
#include "lobject.h"
/*
* WARNING: if you change the order of this enumeration,
* grep "ORDER TM"
*/
typedef enum {
TM_INDEX,
TM_NEWINDEX,
TM_GC,
TM_MODE,
TM_LEN,
TM_EQ, /* last tag method with `fast' access */
TM_ADD,
TM_SUB,
TM_MUL,
TM_DIV,
TM_MOD,
TM_POW,
TM_UNM,
TM_LT,
TM_LE,
TM_CONCAT,
TM_CALL,
TM_N /* number of elements in the enum */
} TMS;
#define gfasttm(g,et,e) ((et) == NULL ? NULL : \
((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
#define fasttm(l,et,e) gfasttm(G(l), et, e)
#define ttypename(x) luaT_typenames_[(x) + 1]
#define objtypename(x) ttypename(ttypenv(x))
LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
TMS event);
LUAI_FUNC void luaT_init (lua_State *L);
#endif

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/*
** $Id: lua.c,v 1.206.1.1 2013/04/12 18:48:47 roberto Exp $
** Lua stand-alone interpreter
** See Copyright Notice in lua.h
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define lua_c
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#if !defined(LUA_PROMPT)
#define LUA_PROMPT "> "
#define LUA_PROMPT2 ">> "
#endif
#if !defined(LUA_PROGNAME)
#define LUA_PROGNAME "lua"
#endif
#if !defined(LUA_MAXINPUT)
#define LUA_MAXINPUT 512
#endif
#if !defined(LUA_INIT)
#define LUA_INIT "LUA_INIT"
#endif
#define LUA_INITVERSION \
LUA_INIT "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
/*
** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
** is, whether we're running lua interactively).
*/
#if defined(LUA_USE_ISATTY)
#include <unistd.h>
#define lua_stdin_is_tty() isatty(0)
#elif defined(LUA_WIN)
#include <io.h>
#include <stdio.h>
#define lua_stdin_is_tty() _isatty(_fileno(stdin))
#else
#define lua_stdin_is_tty() 1 /* assume stdin is a tty */
#endif
/*
** lua_readline defines how to show a prompt and then read a line from
** the standard input.
** lua_saveline defines how to "save" a read line in a "history".
** lua_freeline defines how to free a line read by lua_readline.
*/
#if defined(LUA_USE_READLINE)
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>
#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
#define lua_saveline(L,idx) \
if (lua_rawlen(L,idx) > 0) /* non-empty line? */ \
add_history(lua_tostring(L, idx)); /* add it to history */
#define lua_freeline(L,b) ((void)L, free(b))
#elif !defined(lua_readline)
#define lua_readline(L,b,p) \
((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
#define lua_saveline(L,idx) { (void)L; (void)idx; }
#define lua_freeline(L,b) { (void)L; (void)b; }
#endif
static lua_State *globalL = NULL;
static const char *progname = LUA_PROGNAME;
static void lstop (lua_State *L, lua_Debug *ar) {
(void)ar; /* unused arg. */
lua_sethook(L, NULL, 0, 0);
luaL_error(L, "interrupted!");
}
static void laction (int i) {
signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
terminate process (default action) */
lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
}
static void print_usage (const char *badoption) {
luai_writestringerror("%s: ", progname);
if (badoption[1] == 'e' || badoption[1] == 'l')
luai_writestringerror("'%s' needs argument\n", badoption);
else
luai_writestringerror("unrecognized option '%s'\n", badoption);
luai_writestringerror(
"usage: %s [options] [script [args]]\n"
"Available options are:\n"
" -e stat execute string " LUA_QL("stat") "\n"
" -i enter interactive mode after executing " LUA_QL("script") "\n"
" -l name require library " LUA_QL("name") "\n"
" -v show version information\n"
" -E ignore environment variables\n"
" -- stop handling options\n"
" - stop handling options and execute stdin\n"
,
progname);
}
static void l_message (const char *pname, const char *msg) {
if (pname) luai_writestringerror("%s: ", pname);
luai_writestringerror("%s\n", msg);
}
static int report (lua_State *L, int status) {
if (status != LUA_OK && !lua_isnil(L, -1)) {
const char *msg = lua_tostring(L, -1);
if (msg == NULL) msg = "(error object is not a string)";
l_message(progname, msg);
lua_pop(L, 1);
/* force a complete garbage collection in case of errors */
lua_gc(L, LUA_GCCOLLECT, 0);
}
return status;
}
/* the next function is called unprotected, so it must avoid errors */
static void finalreport (lua_State *L, int status) {
if (status != LUA_OK) {
const char *msg = (lua_type(L, -1) == LUA_TSTRING) ? lua_tostring(L, -1)
: NULL;
if (msg == NULL) msg = "(error object is not a string)";
l_message(progname, msg);
lua_pop(L, 1);
}
}
static int traceback (lua_State *L) {
const char *msg = lua_tostring(L, 1);
if (msg)
luaL_traceback(L, L, msg, 1);
else if (!lua_isnoneornil(L, 1)) { /* is there an error object? */
if (!luaL_callmeta(L, 1, "__tostring")) /* try its 'tostring' metamethod */
lua_pushliteral(L, "(no error message)");
}
return 1;
}
static int docall (lua_State *L, int narg, int nres) {
int status;
int base = lua_gettop(L) - narg; /* function index */
lua_pushcfunction(L, traceback); /* push traceback function */
lua_insert(L, base); /* put it under chunk and args */
globalL = L; /* to be available to 'laction' */
signal(SIGINT, laction);
status = lua_pcall(L, narg, nres, base);
signal(SIGINT, SIG_DFL);
lua_remove(L, base); /* remove traceback function */
return status;
}
static void print_version (void) {
luai_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
luai_writeline();
}
static int getargs (lua_State *L, char **argv, int n) {
int narg;
int i;
int argc = 0;
while (argv[argc]) argc++; /* count total number of arguments */
narg = argc - (n + 1); /* number of arguments to the script */
luaL_checkstack(L, narg + 3, "too many arguments to script");
for (i=n+1; i < argc; i++)
lua_pushstring(L, argv[i]);
lua_createtable(L, narg, n + 1);
for (i=0; i < argc; i++) {
lua_pushstring(L, argv[i]);
lua_rawseti(L, -2, i - n);
}
return narg;
}
static int dofile (lua_State *L, const char *name) {
int status = luaL_loadfile(L, name);
if (status == LUA_OK) status = docall(L, 0, 0);
return report(L, status);
}
static int dostring (lua_State *L, const char *s, const char *name) {
int status = luaL_loadbuffer(L, s, strlen(s), name);
if (status == LUA_OK) status = docall(L, 0, 0);
return report(L, status);
}
static int dolibrary (lua_State *L, const char *name) {
int status;
lua_getglobal(L, "require");
lua_pushstring(L, name);
status = docall(L, 1, 1); /* call 'require(name)' */
if (status == LUA_OK)
lua_setglobal(L, name); /* global[name] = require return */
return report(L, status);
}
static const char *get_prompt (lua_State *L, int firstline) {
const char *p;
lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2");
p = lua_tostring(L, -1);
if (p == NULL) p = (firstline ? LUA_PROMPT : LUA_PROMPT2);
return p;
}
/* mark in error messages for incomplete statements */
#define EOFMARK "<eof>"
#define marklen (sizeof(EOFMARK)/sizeof(char) - 1)
static int incomplete (lua_State *L, int status) {
if (status == LUA_ERRSYNTAX) {
size_t lmsg;
const char *msg = lua_tolstring(L, -1, &lmsg);
if (lmsg >= marklen && strcmp(msg + lmsg - marklen, EOFMARK) == 0) {
lua_pop(L, 1);
return 1;
}
}
return 0; /* else... */
}
static int pushline (lua_State *L, int firstline) {
char buffer[LUA_MAXINPUT];
char *b = buffer;
size_t l;
const char *prmt = get_prompt(L, firstline);
int readstatus = lua_readline(L, b, prmt);
lua_pop(L, 1); /* remove result from 'get_prompt' */
if (readstatus == 0)
return 0; /* no input */
l = strlen(b);
if (l > 0 && b[l-1] == '\n') /* line ends with newline? */
b[l-1] = '\0'; /* remove it */
if (firstline && b[0] == '=') /* first line starts with `=' ? */
lua_pushfstring(L, "return %s", b+1); /* change it to `return' */
else
lua_pushstring(L, b);
lua_freeline(L, b);
return 1;
}
static int loadline (lua_State *L) {
int status;
lua_settop(L, 0);
if (!pushline(L, 1))
return -1; /* no input */
for (;;) { /* repeat until gets a complete line */
size_t l;
const char *line = lua_tolstring(L, 1, &l);
status = luaL_loadbuffer(L, line, l, "=stdin");
if (!incomplete(L, status)) break; /* cannot try to add lines? */
if (!pushline(L, 0)) /* no more input? */
return -1;
lua_pushliteral(L, "\n"); /* add a new line... */
lua_insert(L, -2); /* ...between the two lines */
lua_concat(L, 3); /* join them */
}
lua_saveline(L, 1);
lua_remove(L, 1); /* remove line */
return status;
}
static void dotty (lua_State *L) {
int status;
const char *oldprogname = progname;
progname = NULL;
while ((status = loadline(L)) != -1) {
if (status == LUA_OK) status = docall(L, 0, LUA_MULTRET);
report(L, status);
if (status == LUA_OK && lua_gettop(L) > 0) { /* any result to print? */
luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
lua_getglobal(L, "print");
lua_insert(L, 1);
if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != LUA_OK)
l_message(progname, lua_pushfstring(L,
"error calling " LUA_QL("print") " (%s)",
lua_tostring(L, -1)));
}
}
lua_settop(L, 0); /* clear stack */
luai_writeline();
progname = oldprogname;
}
static int handle_script (lua_State *L, char **argv, int n) {
int status;
const char *fname;
int narg = getargs(L, argv, n); /* collect arguments */
lua_setglobal(L, "arg");
fname = argv[n];
if (strcmp(fname, "-") == 0 && strcmp(argv[n-1], "--") != 0)
fname = NULL; /* stdin */
status = luaL_loadfile(L, fname);
lua_insert(L, -(narg+1));
if (status == LUA_OK)
status = docall(L, narg, LUA_MULTRET);
else
lua_pop(L, narg);
return report(L, status);
}
/* check that argument has no extra characters at the end */
#define noextrachars(x) {if ((x)[2] != '\0') return -1;}
/* indices of various argument indicators in array args */
#define has_i 0 /* -i */
#define has_v 1 /* -v */
#define has_e 2 /* -e */
#define has_E 3 /* -E */
#define num_has 4 /* number of 'has_*' */
static int collectargs (char **argv, int *args) {
int i;
for (i = 1; argv[i] != NULL; i++) {
if (argv[i][0] != '-') /* not an option? */
return i;
switch (argv[i][1]) { /* option */
case '-':
noextrachars(argv[i]);
return (argv[i+1] != NULL ? i+1 : 0);
case '\0':
return i;
case 'E':
args[has_E] = 1;
break;
case 'i':
noextrachars(argv[i]);
args[has_i] = 1; /* go through */
case 'v':
noextrachars(argv[i]);
args[has_v] = 1;
break;
case 'e':
args[has_e] = 1; /* go through */
case 'l': /* both options need an argument */
if (argv[i][2] == '\0') { /* no concatenated argument? */
i++; /* try next 'argv' */
if (argv[i] == NULL || argv[i][0] == '-')
return -(i - 1); /* no next argument or it is another option */
}
break;
default: /* invalid option; return its index... */
return -i; /* ...as a negative value */
}
}
return 0;
}
static int runargs (lua_State *L, char **argv, int n) {
int i;
for (i = 1; i < n; i++) {
lua_assert(argv[i][0] == '-');
switch (argv[i][1]) { /* option */
case 'e': {
const char *chunk = argv[i] + 2;
if (*chunk == '\0') chunk = argv[++i];
lua_assert(chunk != NULL);
if (dostring(L, chunk, "=(command line)") != LUA_OK)
return 0;
break;
}
case 'l': {
const char *filename = argv[i] + 2;
if (*filename == '\0') filename = argv[++i];
lua_assert(filename != NULL);
if (dolibrary(L, filename) != LUA_OK)
return 0; /* stop if file fails */
break;
}
default: break;
}
}
return 1;
}
static int handle_luainit (lua_State *L) {
const char *name = "=" LUA_INITVERSION;
const char *init = getenv(name + 1);
if (init == NULL) {
name = "=" LUA_INIT;
init = getenv(name + 1); /* try alternative name */
}
if (init == NULL) return LUA_OK;
else if (init[0] == '@')
return dofile(L, init+1);
else
return dostring(L, init, name);
}
static int pmain (lua_State *L) {
int argc = (int)lua_tointeger(L, 1);
char **argv = (char **)lua_touserdata(L, 2);
int script;
int args[num_has];
args[has_i] = args[has_v] = args[has_e] = args[has_E] = 0;
if (argv[0] && argv[0][0]) progname = argv[0];
script = collectargs(argv, args);
if (script < 0) { /* invalid arg? */
print_usage(argv[-script]);
return 0;
}
if (args[has_v]) print_version();
if (args[has_E]) { /* option '-E'? */
lua_pushboolean(L, 1); /* signal for libraries to ignore env. vars. */
lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
}
/* open standard libraries */
luaL_checkversion(L);
lua_gc(L, LUA_GCSTOP, 0); /* stop collector during initialization */
luaL_openlibs(L); /* open libraries */
lua_gc(L, LUA_GCRESTART, 0);
if (!args[has_E] && handle_luainit(L) != LUA_OK)
return 0; /* error running LUA_INIT */
/* execute arguments -e and -l */
if (!runargs(L, argv, (script > 0) ? script : argc)) return 0;
/* execute main script (if there is one) */
if (script && handle_script(L, argv, script) != LUA_OK) return 0;
if (args[has_i]) /* -i option? */
dotty(L);
else if (script == 0 && !args[has_e] && !args[has_v]) { /* no arguments? */
if (lua_stdin_is_tty()) {
print_version();
dotty(L);
}
else dofile(L, NULL); /* executes stdin as a file */
}
lua_pushboolean(L, 1); /* signal no errors */
return 1;
}
int main (int argc, char **argv) {
int status, result;
lua_State *L = luaL_newstate(); /* create state */
if (L == NULL) {
l_message(argv[0], "cannot create state: not enough memory");
return EXIT_FAILURE;
}
/* call 'pmain' in protected mode */
lua_pushcfunction(L, &pmain);
lua_pushinteger(L, argc); /* 1st argument */
lua_pushlightuserdata(L, argv); /* 2nd argument */
status = lua_pcall(L, 2, 1, 0);
result = lua_toboolean(L, -1); /* get result */
finalreport(L, status);
lua_close(L);
return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE;
}

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/** @file
Stub header to allow the "real" headers to reside in StdLib/Include/Lua
yet have the Lua sources build without having to change the include
directives in each file.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Lua/lua.h>

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// lua.hpp
// Lua header files for C++
// <<extern "C">> not supplied automatically because Lua also compiles as C++
extern "C" {
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}

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/*
** $Id: luac.c,v 1.69 2011/11/29 17:46:33 lhf Exp $
** Lua compiler (saves bytecodes to files; also list bytecodes)
** See Copyright Notice in lua.h
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define luac_c
#define LUA_CORE
#include "lua.h"
#include "lauxlib.h"
#include "lobject.h"
#include "lstate.h"
#include "lundump.h"
static void PrintFunction(const Proto* f, int full);
#define luaU_print PrintFunction
#define PROGNAME "luac" /* default program name */
#define OUTPUT PROGNAME ".out" /* default output file */
static int listing=0; /* list bytecodes? */
static int dumping=1; /* dump bytecodes? */
static int stripping=0; /* strip debug information? */
static char Output[]={ OUTPUT }; /* default output file name */
static const char* output=Output; /* actual output file name */
static const char* progname=PROGNAME; /* actual program name */
static void fatal(const char* message)
{
fprintf(stderr,"%s: %s\n",progname,message);
exit(EXIT_FAILURE);
}
static void cannot(const char* what)
{
fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
exit(EXIT_FAILURE);
}
static void usage(const char* message)
{
if (*message=='-')
fprintf(stderr,"%s: unrecognized option " LUA_QS "\n",progname,message);
else
fprintf(stderr,"%s: %s\n",progname,message);
fprintf(stderr,
"usage: %s [options] [filenames]\n"
"Available options are:\n"
" -l list (use -l -l for full listing)\n"
" -o name output to file " LUA_QL("name") " (default is \"%s\")\n"
" -p parse only\n"
" -s strip debug information\n"
" -v show version information\n"
" -- stop handling options\n"
" - stop handling options and process stdin\n"
,progname,Output);
exit(EXIT_FAILURE);
}
#define IS(s) (strcmp(argv[i],s)==0)
static int doargs(int argc, char* argv[])
{
int i;
int version=0;
if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
for (i=1; i<argc; i++)
{
if (*argv[i]!='-') /* end of options; keep it */
break;
else if (IS("--")) /* end of options; skip it */
{
++i;
if (version) ++version;
break;
}
else if (IS("-")) /* end of options; use stdin */
break;
else if (IS("-l")) /* list */
++listing;
else if (IS("-o")) /* output file */
{
output=argv[++i];
if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
usage(LUA_QL("-o") " needs argument");
if (IS("-")) output=NULL;
}
else if (IS("-p")) /* parse only */
dumping=0;
else if (IS("-s")) /* strip debug information */
stripping=1;
else if (IS("-v")) /* show version */
++version;
else /* unknown option */
usage(argv[i]);
}
if (i==argc && (listing || !dumping))
{
dumping=0;
argv[--i]=Output;
}
if (version)
{
printf("%s\n",LUA_COPYRIGHT);
if (version==argc-1) exit(EXIT_SUCCESS);
}
return i;
}
#define FUNCTION "(function()end)();"
static const char* reader(lua_State *L, void *ud, size_t *size)
{
UNUSED(L);
if ((*(int*)ud)--)
{
*size=sizeof(FUNCTION)-1;
return FUNCTION;
}
else
{
*size=0;
return NULL;
}
}
#define toproto(L,i) getproto(L->top+(i))
static const Proto* combine(lua_State* L, int n)
{
if (n==1)
return toproto(L,-1);
else
{
Proto* f;
int i=n;
if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
f=toproto(L,-1);
for (i=0; i<n; i++)
{
f->p[i]=toproto(L,i-n-1);
if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
}
f->sizelineinfo=0;
return f;
}
}
static int writer(lua_State* L, const void* p, size_t size, void* u)
{
UNUSED(L);
return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
}
static int pmain(lua_State* L)
{
int argc=(int)lua_tointeger(L,1);
char** argv=(char**)lua_touserdata(L,2);
const Proto* f;
int i;
if (!lua_checkstack(L,argc)) fatal("too many input files");
for (i=0; i<argc; i++)
{
const char* filename=IS("-") ? NULL : argv[i];
if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
}
f=combine(L,argc);
if (listing) luaU_print(f,listing>1);
if (dumping)
{
FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
if (D==NULL) cannot("open");
lua_lock(L);
luaU_dump(L,f,writer,D,stripping);
lua_unlock(L);
if (ferror(D)) cannot("write");
if (fclose(D)) cannot("close");
}
return 0;
}
int main(int argc, char* argv[])
{
lua_State* L;
int i=doargs(argc,argv);
argc-=i; argv+=i;
if (argc<=0) usage("no input files given");
L=luaL_newstate();
if (L==NULL) fatal("cannot create state: not enough memory");
lua_pushcfunction(L,&pmain);
lua_pushinteger(L,argc);
lua_pushlightuserdata(L,argv);
if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
lua_close(L);
return EXIT_SUCCESS;
}
/*
** $Id: print.c,v 1.69 2013/07/04 01:03:46 lhf Exp $
** print bytecodes
** See Copyright Notice in lua.h
*/
#include <ctype.h>
#include <stdio.h>
#define luac_c
#define LUA_CORE
#include "ldebug.h"
#include "lobject.h"
#include "lopcodes.h"
#define VOID(p) ((const void*)(p))
static void PrintString(const TString* ts)
{
const char* s=getstr(ts);
size_t i,n=ts->tsv.len;
printf("%c",'"');
for (i=0; i<n; i++)
{
int c=(int)(unsigned char)s[i];
switch (c)
{
case '"': printf("\\\""); break;
case '\\': printf("\\\\"); break;
case '\a': printf("\\a"); break;
case '\b': printf("\\b"); break;
case '\f': printf("\\f"); break;
case '\n': printf("\\n"); break;
case '\r': printf("\\r"); break;
case '\t': printf("\\t"); break;
case '\v': printf("\\v"); break;
default: if (isprint(c))
printf("%c",c);
else
printf("\\%03d",c);
}
}
printf("%c",'"');
}
static void PrintConstant(const Proto* f, int i)
{
const TValue* o=&f->k[i];
switch (ttypenv(o))
{
case LUA_TNIL:
printf("nil");
break;
case LUA_TBOOLEAN:
printf(bvalue(o) ? "true" : "false");
break;
case LUA_TNUMBER:
printf(LUA_NUMBER_FMT,nvalue(o));
break;
case LUA_TSTRING:
PrintString(rawtsvalue(o));
break;
default: /* cannot happen */
printf("? type=%d",ttype(o));
break;
}
}
#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
#define MYK(x) (-1-(x))
static void PrintCode(const Proto* f)
{
const Instruction* code=f->code;
int pc,n=f->sizecode;
for (pc=0; pc<n; pc++)
{
Instruction i=code[pc];
OpCode o=GET_OPCODE(i);
int a=GETARG_A(i);
int b=GETARG_B(i);
int c=GETARG_C(i);
int ax=GETARG_Ax(i);
int bx=GETARG_Bx(i);
int sbx=GETARG_sBx(i);
int line=getfuncline(f,pc);
printf("\t%d\t",pc+1);
if (line>0) printf("[%d]\t",line); else printf("[-]\t");
printf("%-9s\t",luaP_opnames[o]);
switch (getOpMode(o))
{
case iABC:
printf("%d",a);
if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
break;
case iABx:
printf("%d",a);
if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
if (getBMode(o)==OpArgU) printf(" %d",bx);
break;
case iAsBx:
printf("%d %d",a,sbx);
break;
case iAx:
printf("%d",MYK(ax));
break;
}
switch (o)
{
case OP_LOADK:
printf("\t; "); PrintConstant(f,bx);
break;
case OP_GETUPVAL:
case OP_SETUPVAL:
printf("\t; %s",UPVALNAME(b));
break;
case OP_GETTABUP:
printf("\t; %s",UPVALNAME(b));
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
break;
case OP_SETTABUP:
printf("\t; %s",UPVALNAME(a));
if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
break;
case OP_GETTABLE:
case OP_SELF:
if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
break;
case OP_SETTABLE:
case OP_ADD:
case OP_SUB:
case OP_MUL:
case OP_DIV:
case OP_POW:
case OP_EQ:
case OP_LT:
case OP_LE:
if (ISK(b) || ISK(c))
{
printf("\t; ");
if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
printf(" ");
if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
}
break;
case OP_JMP:
case OP_FORLOOP:
case OP_FORPREP:
case OP_TFORLOOP:
printf("\t; to %d",sbx+pc+2);
break;
case OP_CLOSURE:
printf("\t; %p",VOID(f->p[bx]));
break;
case OP_SETLIST:
if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
break;
case OP_EXTRAARG:
printf("\t; "); PrintConstant(f,ax);
break;
default:
break;
}
printf("\n");
}
}
#define SS(x) ((x==1)?"":"s")
#define S(x) (int)(x),SS(x)
static void PrintHeader(const Proto* f)
{
const char* s=f->source ? getstr(f->source) : "=?";
if (*s=='@' || *s=='=')
s++;
else if (*s==LUA_SIGNATURE[0])
s="(bstring)";
else
s="(string)";
printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
(f->linedefined==0)?"main":"function",s,
f->linedefined,f->lastlinedefined,
S(f->sizecode),VOID(f));
printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
S(f->maxstacksize),S(f->sizeupvalues));
printf("%d local%s, %d constant%s, %d function%s\n",
S(f->sizelocvars),S(f->sizek),S(f->sizep));
}
static void PrintDebug(const Proto* f)
{
int i,n;
n=f->sizek;
printf("constants (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t",i+1);
PrintConstant(f,i);
printf("\n");
}
n=f->sizelocvars;
printf("locals (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t%s\t%d\t%d\n",
i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
}
n=f->sizeupvalues;
printf("upvalues (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++)
{
printf("\t%d\t%s\t%d\t%d\n",
i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
}
}
static void PrintFunction(const Proto* f, int full)
{
int i,n=f->sizep;
PrintHeader(f);
PrintCode(f);
if (full) PrintDebug(f);
for (i=0; i<n; i++) PrintFunction(f->p[i],full);
}

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/** @file
Stub header to allow the "real" headers to reside in StdLib/Include/Lua
yet have the Lua sources build without having to change the include
directives in each file.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Lua/luaconf.h>

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/** @file
Stub header to allow the "real" headers to reside in StdLib/Include/Lua
yet have the Lua sources build without having to change the include
directives in each file.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Lua/lualib.h>

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/*
** $Id: lundump.c,v 2.22.1.1 2013/04/12 18:48:47 roberto Exp $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#include <string.h>
#define lundump_c
#define LUA_CORE
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstring.h"
#include "lundump.h"
#include "lzio.h"
typedef struct {
lua_State* L;
ZIO* Z;
Mbuffer* b;
const char* name;
} LoadState;
static l_noret error(LoadState* S, const char* why)
{
luaO_pushfstring(S->L,"%s: %s precompiled chunk",S->name,why);
luaD_throw(S->L,LUA_ERRSYNTAX);
}
#define LoadMem(S,b,n,size) LoadBlock(S,b,(n)*(size))
#define LoadByte(S) (lu_byte)LoadChar(S)
#define LoadVar(S,x) LoadMem(S,&x,1,sizeof(x))
#define LoadVector(S,b,n,size) LoadMem(S,b,n,size)
#if !defined(luai_verifycode)
#define luai_verifycode(L,b,f) /* empty */
#endif
static void LoadBlock(LoadState* S, void* b, size_t size)
{
if (luaZ_read(S->Z,b,size)!=0) error(S,"truncated");
}
static int LoadChar(LoadState* S)
{
char x;
LoadVar(S,x);
return x;
}
static int LoadInt(LoadState* S)
{
int x;
LoadVar(S,x);
if (x<0) error(S,"corrupted");
return x;
}
static lua_Number LoadNumber(LoadState* S)
{
lua_Number x;
LoadVar(S,x);
return x;
}
static TString* LoadString(LoadState* S)
{
size_t size;
LoadVar(S,size);
if (size==0)
return NULL;
else
{
char* s=luaZ_openspace(S->L,S->b,size);
LoadBlock(S,s,size*sizeof(char));
return luaS_newlstr(S->L,s,size-1); /* remove trailing '\0' */
}
}
static void LoadCode(LoadState* S, Proto* f)
{
int n=LoadInt(S);
f->code=luaM_newvector(S->L,n,Instruction);
f->sizecode=n;
LoadVector(S,f->code,n,sizeof(Instruction));
}
static void LoadFunction(LoadState* S, Proto* f);
static void LoadConstants(LoadState* S, Proto* f)
{
int i,n;
n=LoadInt(S);
f->k=luaM_newvector(S->L,n,TValue);
f->sizek=n;
for (i=0; i<n; i++) setnilvalue(&f->k[i]);
for (i=0; i<n; i++)
{
TValue* o=&f->k[i];
int t=LoadChar(S);
switch (t)
{
case LUA_TNIL:
setnilvalue(o);
break;
case LUA_TBOOLEAN:
setbvalue(o,LoadChar(S));
break;
case LUA_TNUMBER:
setnvalue(o,LoadNumber(S));
break;
case LUA_TSTRING:
setsvalue2n(S->L,o,LoadString(S));
break;
default: lua_assert(0);
}
}
n=LoadInt(S);
f->p=luaM_newvector(S->L,n,Proto*);
f->sizep=n;
for (i=0; i<n; i++) f->p[i]=NULL;
for (i=0; i<n; i++)
{
f->p[i]=luaF_newproto(S->L);
LoadFunction(S,f->p[i]);
}
}
static void LoadUpvalues(LoadState* S, Proto* f)
{
int i,n;
n=LoadInt(S);
f->upvalues=luaM_newvector(S->L,n,Upvaldesc);
f->sizeupvalues=n;
for (i=0; i<n; i++) f->upvalues[i].name=NULL;
for (i=0; i<n; i++)
{
f->upvalues[i].instack=LoadByte(S);
f->upvalues[i].idx=LoadByte(S);
}
}
static void LoadDebug(LoadState* S, Proto* f)
{
int i,n;
f->source=LoadString(S);
n=LoadInt(S);
f->lineinfo=luaM_newvector(S->L,n,int);
f->sizelineinfo=n;
LoadVector(S,f->lineinfo,n,sizeof(int));
n=LoadInt(S);
f->locvars=luaM_newvector(S->L,n,LocVar);
f->sizelocvars=n;
for (i=0; i<n; i++) f->locvars[i].varname=NULL;
for (i=0; i<n; i++)
{
f->locvars[i].varname=LoadString(S);
f->locvars[i].startpc=LoadInt(S);
f->locvars[i].endpc=LoadInt(S);
}
n=LoadInt(S);
for (i=0; i<n; i++) f->upvalues[i].name=LoadString(S);
}
static void LoadFunction(LoadState* S, Proto* f)
{
f->linedefined=LoadInt(S);
f->lastlinedefined=LoadInt(S);
f->numparams=LoadByte(S);
f->is_vararg=LoadByte(S);
f->maxstacksize=LoadByte(S);
LoadCode(S,f);
LoadConstants(S,f);
LoadUpvalues(S,f);
LoadDebug(S,f);
}
/* the code below must be consistent with the code in luaU_header */
#define N0 LUAC_HEADERSIZE
#define N1 (sizeof(LUA_SIGNATURE)-sizeof(char))
#define N2 N1+2
#define N3 N2+6
static void LoadHeader(LoadState* S)
{
lu_byte h[LUAC_HEADERSIZE];
lu_byte s[LUAC_HEADERSIZE];
luaU_header(h);
memcpy(s,h,sizeof(char)); /* first char already read */
LoadBlock(S,s+sizeof(char),LUAC_HEADERSIZE-sizeof(char));
if (memcmp(h,s,N0)==0) return;
if (memcmp(h,s,N1)!=0) error(S,"not a");
if (memcmp(h,s,N2)!=0) error(S,"version mismatch in");
if (memcmp(h,s,N3)!=0) error(S,"incompatible"); else error(S,"corrupted");
}
/*
** load precompiled chunk
*/
Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name)
{
LoadState S;
Closure* cl;
if (*name=='@' || *name=='=')
S.name=name+1;
else if (*name==LUA_SIGNATURE[0])
S.name="binary string";
else
S.name=name;
S.L=L;
S.Z=Z;
S.b=buff;
LoadHeader(&S);
cl=luaF_newLclosure(L,1);
setclLvalue(L,L->top,cl); incr_top(L);
cl->l.p=luaF_newproto(L);
LoadFunction(&S,cl->l.p);
if (cl->l.p->sizeupvalues != 1)
{
Proto* p=cl->l.p;
cl=luaF_newLclosure(L,cl->l.p->sizeupvalues);
cl->l.p=p;
setclLvalue(L,L->top-1,cl);
}
luai_verifycode(L,buff,cl->l.p);
return cl;
}
#define MYINT(s) (s[0]-'0')
#define VERSION MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR)
#define FORMAT 0 /* this is the official format */
/*
* make header for precompiled chunks
* if you change the code below be sure to update LoadHeader and FORMAT above
* and LUAC_HEADERSIZE in lundump.h
*/
void luaU_header (lu_byte* h)
{
int x=1;
memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-sizeof(char));
h+=sizeof(LUA_SIGNATURE)-sizeof(char);
*h++=cast_byte(VERSION);
*h++=cast_byte(FORMAT);
*h++=cast_byte(*(char*)&x); /* endianness */
*h++=cast_byte(sizeof(int));
*h++=cast_byte(sizeof(size_t));
*h++=cast_byte(sizeof(Instruction));
*h++=cast_byte(sizeof(lua_Number));
*h++=cast_byte(((lua_Number)0.5)==0); /* is lua_Number integral? */
memcpy(h,LUAC_TAIL,sizeof(LUAC_TAIL)-sizeof(char));
}

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@ -0,0 +1,28 @@
/*
** $Id: lundump.h,v 1.39.1.1 2013/04/12 18:48:47 roberto Exp $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#ifndef lundump_h
#define lundump_h
#include "lobject.h"
#include "lzio.h"
/* load one chunk; from lundump.c */
LUAI_FUNC Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name);
/* make header; from lundump.c */
LUAI_FUNC void luaU_header (lu_byte* h);
/* dump one chunk; from ldump.c */
LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
/* data to catch conversion errors */
#define LUAC_TAIL "\x19\x93\r\n\x1a\n"
/* size in bytes of header of binary files */
#define LUAC_HEADERSIZE (sizeof(LUA_SIGNATURE)-sizeof(char)+2+6+sizeof(LUAC_TAIL)-sizeof(char))
#endif

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@ -0,0 +1,867 @@
/*
** $Id: lvm.c,v 2.155.1.1 2013/04/12 18:48:47 roberto Exp $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define lvm_c
#define LUA_CORE
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
/* limit for table tag-method chains (to avoid loops) */
#define MAXTAGLOOP 100
const TValue *luaV_tonumber (const TValue *obj, TValue *n) {
lua_Number num;
if (ttisnumber(obj)) return obj;
if (ttisstring(obj) && luaO_str2d(svalue(obj), tsvalue(obj)->len, &num)) {
setnvalue(n, num);
return n;
}
else
return NULL;
}
int luaV_tostring (lua_State *L, StkId obj) {
if (!ttisnumber(obj))
return 0;
else {
char s[LUAI_MAXNUMBER2STR];
lua_Number n = nvalue(obj);
int l = lua_number2str(s, n);
setsvalue2s(L, obj, luaS_newlstr(L, s, l));
return 1;
}
}
static void traceexec (lua_State *L) {
CallInfo *ci = L->ci;
lu_byte mask = L->hookmask;
int counthook = ((mask & LUA_MASKCOUNT) && L->hookcount == 0);
if (counthook)
resethookcount(L); /* reset count */
if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */
ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */
return; /* do not call hook again (VM yielded, so it did not move) */
}
if (counthook)
luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */
if (mask & LUA_MASKLINE) {
Proto *p = ci_func(ci)->p;
int npc = pcRel(ci->u.l.savedpc, p);
int newline = getfuncline(p, npc);
if (npc == 0 || /* call linehook when enter a new function, */
ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */
newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */
luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */
}
L->oldpc = ci->u.l.savedpc;
if (L->status == LUA_YIELD) { /* did hook yield? */
if (counthook)
L->hookcount = 1; /* undo decrement to zero */
ci->u.l.savedpc--; /* undo increment (resume will increment it again) */
ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */
ci->func = L->top - 1; /* protect stack below results */
luaD_throw(L, LUA_YIELD);
}
}
static void callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, TValue *p3, int hasres) {
ptrdiff_t result = savestack(L, p3);
setobj2s(L, L->top++, f); /* push function */
setobj2s(L, L->top++, p1); /* 1st argument */
setobj2s(L, L->top++, p2); /* 2nd argument */
if (!hasres) /* no result? 'p3' is third argument */
setobj2s(L, L->top++, p3); /* 3rd argument */
/* metamethod may yield only when called from Lua code */
luaD_call(L, L->top - (4 - hasres), hasres, isLua(L->ci));
if (hasres) { /* if has result, move it to its place */
p3 = restorestack(L, result);
setobjs2s(L, p3, --L->top);
}
}
void luaV_gettable (lua_State *L, const TValue *t, TValue *key, StkId val) {
int loop;
for (loop = 0; loop < MAXTAGLOOP; loop++) {
const TValue *tm;
if (ttistable(t)) { /* `t' is a table? */
Table *h = hvalue(t);
const TValue *res = luaH_get(h, key); /* do a primitive get */
if (!ttisnil(res) || /* result is not nil? */
(tm = fasttm(L, h->metatable, TM_INDEX)) == NULL) { /* or no TM? */
setobj2s(L, val, res);
return;
}
/* else will try the tag method */
}
else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_INDEX)))
luaG_typeerror(L, t, "index");
if (ttisfunction(tm)) {
callTM(L, tm, t, key, val, 1);
return;
}
t = tm; /* else repeat with 'tm' */
}
luaG_runerror(L, "loop in gettable");
}
void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) {
int loop;
for (loop = 0; loop < MAXTAGLOOP; loop++) {
const TValue *tm;
if (ttistable(t)) { /* `t' is a table? */
Table *h = hvalue(t);
TValue *oldval = cast(TValue *, luaH_get(h, key));
/* if previous value is not nil, there must be a previous entry
in the table; moreover, a metamethod has no relevance */
if (!ttisnil(oldval) ||
/* previous value is nil; must check the metamethod */
((tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL &&
/* no metamethod; is there a previous entry in the table? */
(oldval != luaO_nilobject ||
/* no previous entry; must create one. (The next test is
always true; we only need the assignment.) */
(oldval = luaH_newkey(L, h, key), 1)))) {
/* no metamethod and (now) there is an entry with given key */
setobj2t(L, oldval, val); /* assign new value to that entry */
invalidateTMcache(h);
luaC_barrierback(L, obj2gco(h), val);
return;
}
/* else will try the metamethod */
}
else /* not a table; check metamethod */
if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX)))
luaG_typeerror(L, t, "index");
/* there is a metamethod */
if (ttisfunction(tm)) {
callTM(L, tm, t, key, val, 0);
return;
}
t = tm; /* else repeat with 'tm' */
}
luaG_runerror(L, "loop in settable");
}
static int call_binTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (ttisnil(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (ttisnil(tm)) return 0;
callTM(L, tm, p1, p2, res, 1);
return 1;
}
static const TValue *get_equalTM (lua_State *L, Table *mt1, Table *mt2,
TMS event) {
const TValue *tm1 = fasttm(L, mt1, event);
const TValue *tm2;
if (tm1 == NULL) return NULL; /* no metamethod */
if (mt1 == mt2) return tm1; /* same metatables => same metamethods */
tm2 = fasttm(L, mt2, event);
if (tm2 == NULL) return NULL; /* no metamethod */
if (luaV_rawequalobj(tm1, tm2)) /* same metamethods? */
return tm1;
return NULL;
}
static int call_orderTM (lua_State *L, const TValue *p1, const TValue *p2,
TMS event) {
if (!call_binTM(L, p1, p2, L->top, event))
return -1; /* no metamethod */
else
return !l_isfalse(L->top);
}
static int l_strcmp (const TString *ls, const TString *rs) {
const char *l = getstr(ls);
size_t ll = ls->tsv.len;
const char *r = getstr(rs);
size_t lr = rs->tsv.len;
for (;;) {
int temp = strcoll(l, r);
if (temp != 0) return temp;
else { /* strings are equal up to a `\0' */
size_t len = strlen(l); /* index of first `\0' in both strings */
if (len == lr) /* r is finished? */
return (len == ll) ? 0 : 1;
else if (len == ll) /* l is finished? */
return -1; /* l is smaller than r (because r is not finished) */
/* both strings longer than `len'; go on comparing (after the `\0') */
len++;
l += len; ll -= len; r += len; lr -= len;
}
}
}
int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r) {
int res;
if (ttisnumber(l) && ttisnumber(r))
return luai_numlt(L, nvalue(l), nvalue(r));
else if (ttisstring(l) && ttisstring(r))
return l_strcmp(rawtsvalue(l), rawtsvalue(r)) < 0;
else if ((res = call_orderTM(L, l, r, TM_LT)) < 0)
luaG_ordererror(L, l, r);
return res;
}
int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r) {
int res;
if (ttisnumber(l) && ttisnumber(r))
return luai_numle(L, nvalue(l), nvalue(r));
else if (ttisstring(l) && ttisstring(r))
return l_strcmp(rawtsvalue(l), rawtsvalue(r)) <= 0;
else if ((res = call_orderTM(L, l, r, TM_LE)) >= 0) /* first try `le' */
return res;
else if ((res = call_orderTM(L, r, l, TM_LT)) < 0) /* else try `lt' */
luaG_ordererror(L, l, r);
return !res;
}
/*
** equality of Lua values. L == NULL means raw equality (no metamethods)
*/
int luaV_equalobj_ (lua_State *L, const TValue *t1, const TValue *t2) {
const TValue *tm;
lua_assert(ttisequal(t1, t2));
switch (ttype(t1)) {
case LUA_TNIL: return 1;
case LUA_TNUMBER: return luai_numeq(nvalue(t1), nvalue(t2));
case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
case LUA_TLCF: return fvalue(t1) == fvalue(t2);
case LUA_TSHRSTR: return eqshrstr(rawtsvalue(t1), rawtsvalue(t2));
case LUA_TLNGSTR: return luaS_eqlngstr(rawtsvalue(t1), rawtsvalue(t2));
case LUA_TUSERDATA: {
if (uvalue(t1) == uvalue(t2)) return 1;
else if (L == NULL) return 0;
tm = get_equalTM(L, uvalue(t1)->metatable, uvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
case LUA_TTABLE: {
if (hvalue(t1) == hvalue(t2)) return 1;
else if (L == NULL) return 0;
tm = get_equalTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
break; /* will try TM */
}
default:
lua_assert(iscollectable(t1));
return gcvalue(t1) == gcvalue(t2);
}
if (tm == NULL) return 0; /* no TM? */
callTM(L, tm, t1, t2, L->top, 1); /* call TM */
return !l_isfalse(L->top);
}
void luaV_concat (lua_State *L, int total) {
lua_assert(total >= 2);
do {
StkId top = L->top;
int n = 2; /* number of elements handled in this pass (at least 2) */
if (!(ttisstring(top-2) || ttisnumber(top-2)) || !tostring(L, top-1)) {
if (!call_binTM(L, top-2, top-1, top-2, TM_CONCAT))
luaG_concaterror(L, top-2, top-1);
}
else if (tsvalue(top-1)->len == 0) /* second operand is empty? */
(void)tostring(L, top - 2); /* result is first operand */
else if (ttisstring(top-2) && tsvalue(top-2)->len == 0) {
setobjs2s(L, top - 2, top - 1); /* result is second op. */
}
else {
/* at least two non-empty string values; get as many as possible */
size_t tl = tsvalue(top-1)->len;
char *buffer;
int i;
/* collect total length */
for (i = 1; i < total && tostring(L, top-i-1); i++) {
size_t l = tsvalue(top-i-1)->len;
if (l >= (MAX_SIZET/sizeof(char)) - tl)
luaG_runerror(L, "string length overflow");
tl += l;
}
buffer = luaZ_openspace(L, &G(L)->buff, tl);
tl = 0;
n = i;
do { /* concat all strings */
size_t l = tsvalue(top-i)->len;
memcpy(buffer+tl, svalue(top-i), l * sizeof(char));
tl += l;
} while (--i > 0);
setsvalue2s(L, top-n, luaS_newlstr(L, buffer, tl));
}
total -= n-1; /* got 'n' strings to create 1 new */
L->top -= n-1; /* popped 'n' strings and pushed one */
} while (total > 1); /* repeat until only 1 result left */
}
void luaV_objlen (lua_State *L, StkId ra, const TValue *rb) {
const TValue *tm;
switch (ttypenv(rb)) {
case LUA_TTABLE: {
Table *h = hvalue(rb);
tm = fasttm(L, h->metatable, TM_LEN);
if (tm) break; /* metamethod? break switch to call it */
setnvalue(ra, cast_num(luaH_getn(h))); /* else primitive len */
return;
}
case LUA_TSTRING: {
setnvalue(ra, cast_num(tsvalue(rb)->len));
return;
}
default: { /* try metamethod */
tm = luaT_gettmbyobj(L, rb, TM_LEN);
if (ttisnil(tm)) /* no metamethod? */
luaG_typeerror(L, rb, "get length of");
break;
}
}
callTM(L, tm, rb, rb, ra, 1);
}
void luaV_arith (lua_State *L, StkId ra, const TValue *rb,
const TValue *rc, TMS op) {
TValue tempb, tempc;
const TValue *b, *c;
if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
(c = luaV_tonumber(rc, &tempc)) != NULL) {
lua_Number res = luaO_arith(op - TM_ADD + LUA_OPADD, nvalue(b), nvalue(c));
setnvalue(ra, res);
}
else if (!call_binTM(L, rb, rc, ra, op))
luaG_aritherror(L, rb, rc);
}
/*
** check whether cached closure in prototype 'p' may be reused, that is,
** whether there is a cached closure with the same upvalues needed by
** new closure to be created.
*/
static Closure *getcached (Proto *p, UpVal **encup, StkId base) {
Closure *c = p->cache;
if (c != NULL) { /* is there a cached closure? */
int nup = p->sizeupvalues;
Upvaldesc *uv = p->upvalues;
int i;
for (i = 0; i < nup; i++) { /* check whether it has right upvalues */
TValue *v = uv[i].instack ? base + uv[i].idx : encup[uv[i].idx]->v;
if (c->l.upvals[i]->v != v)
return NULL; /* wrong upvalue; cannot reuse closure */
}
}
return c; /* return cached closure (or NULL if no cached closure) */
}
/*
** create a new Lua closure, push it in the stack, and initialize
** its upvalues. Note that the call to 'luaC_barrierproto' must come
** before the assignment to 'p->cache', as the function needs the
** original value of that field.
*/
static void pushclosure (lua_State *L, Proto *p, UpVal **encup, StkId base,
StkId ra) {
int nup = p->sizeupvalues;
Upvaldesc *uv = p->upvalues;
int i;
Closure *ncl = luaF_newLclosure(L, nup);
ncl->l.p = p;
setclLvalue(L, ra, ncl); /* anchor new closure in stack */
for (i = 0; i < nup; i++) { /* fill in its upvalues */
if (uv[i].instack) /* upvalue refers to local variable? */
ncl->l.upvals[i] = luaF_findupval(L, base + uv[i].idx);
else /* get upvalue from enclosing function */
ncl->l.upvals[i] = encup[uv[i].idx];
}
luaC_barrierproto(L, p, ncl);
p->cache = ncl; /* save it on cache for reuse */
}
/*
** finish execution of an opcode interrupted by an yield
*/
void luaV_finishOp (lua_State *L) {
CallInfo *ci = L->ci;
StkId base = ci->u.l.base;
Instruction inst = *(ci->u.l.savedpc - 1); /* interrupted instruction */
OpCode op = GET_OPCODE(inst);
switch (op) { /* finish its execution */
case OP_ADD: case OP_SUB: case OP_MUL: case OP_DIV:
case OP_MOD: case OP_POW: case OP_UNM: case OP_LEN:
case OP_GETTABUP: case OP_GETTABLE: case OP_SELF: {
setobjs2s(L, base + GETARG_A(inst), --L->top);
break;
}
case OP_LE: case OP_LT: case OP_EQ: {
int res = !l_isfalse(L->top - 1);
L->top--;
/* metamethod should not be called when operand is K */
lua_assert(!ISK(GETARG_B(inst)));
if (op == OP_LE && /* "<=" using "<" instead? */
ttisnil(luaT_gettmbyobj(L, base + GETARG_B(inst), TM_LE)))
res = !res; /* invert result */
lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_JMP);
if (res != GETARG_A(inst)) /* condition failed? */
ci->u.l.savedpc++; /* skip jump instruction */
break;
}
case OP_CONCAT: {
StkId top = L->top - 1; /* top when 'call_binTM' was called */
int b = GETARG_B(inst); /* first element to concatenate */
int total = cast_int(top - 1 - (base + b)); /* yet to concatenate */
setobj2s(L, top - 2, top); /* put TM result in proper position */
if (total > 1) { /* are there elements to concat? */
L->top = top - 1; /* top is one after last element (at top-2) */
luaV_concat(L, total); /* concat them (may yield again) */
}
/* move final result to final position */
setobj2s(L, ci->u.l.base + GETARG_A(inst), L->top - 1);
L->top = ci->top; /* restore top */
break;
}
case OP_TFORCALL: {
lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_TFORLOOP);
L->top = ci->top; /* correct top */
break;
}
case OP_CALL: {
if (GETARG_C(inst) - 1 >= 0) /* nresults >= 0? */
L->top = ci->top; /* adjust results */
break;
}
case OP_TAILCALL: case OP_SETTABUP: case OP_SETTABLE:
break;
default: lua_assert(0);
}
}
/*
** some macros for common tasks in `luaV_execute'
*/
#if !defined luai_runtimecheck
#define luai_runtimecheck(L, c) /* void */
#endif
#define RA(i) (base+GETARG_A(i))
/* to be used after possible stack reallocation */
#define RB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgR, base+GETARG_B(i))
#define RC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgR, base+GETARG_C(i))
#define RKB(i) check_exp(getBMode(GET_OPCODE(i)) == OpArgK, \
ISK(GETARG_B(i)) ? k+INDEXK(GETARG_B(i)) : base+GETARG_B(i))
#define RKC(i) check_exp(getCMode(GET_OPCODE(i)) == OpArgK, \
ISK(GETARG_C(i)) ? k+INDEXK(GETARG_C(i)) : base+GETARG_C(i))
#define KBx(i) \
(k + (GETARG_Bx(i) != 0 ? GETARG_Bx(i) - 1 : GETARG_Ax(*ci->u.l.savedpc++)))
/* execute a jump instruction */
#define dojump(ci,i,e) \
{ int a = GETARG_A(i); \
if (a > 0) luaF_close(L, ci->u.l.base + a - 1); \
ci->u.l.savedpc += GETARG_sBx(i) + e; }
/* for test instructions, execute the jump instruction that follows it */
#define donextjump(ci) { i = *ci->u.l.savedpc; dojump(ci, i, 1); }
#define Protect(x) { {x;}; base = ci->u.l.base; }
#define checkGC(L,c) \
Protect( luaC_condGC(L,{L->top = (c); /* limit of live values */ \
luaC_step(L); \
L->top = ci->top;}) /* restore top */ \
luai_threadyield(L); )
#define arith_op(op,tm) { \
TValue *rb = RKB(i); \
TValue *rc = RKC(i); \
if (ttisnumber(rb) && ttisnumber(rc)) { \
lua_Number nb = nvalue(rb), nc = nvalue(rc); \
setnvalue(ra, op(L, nb, nc)); \
} \
else { Protect(luaV_arith(L, ra, rb, rc, tm)); } }
#define vmdispatch(o) switch(o)
#define vmcase(l,b) case l: {b} break;
#define vmcasenb(l,b) case l: {b} /* nb = no break */
void luaV_execute (lua_State *L) {
CallInfo *ci = L->ci;
LClosure *cl;
TValue *k;
StkId base;
newframe: /* reentry point when frame changes (call/return) */
lua_assert(ci == L->ci);
cl = clLvalue(ci->func);
k = cl->p->k;
base = ci->u.l.base;
/* main loop of interpreter */
for (;;) {
Instruction i = *(ci->u.l.savedpc++);
StkId ra;
if ((L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) &&
(--L->hookcount == 0 || L->hookmask & LUA_MASKLINE)) {
Protect(traceexec(L));
}
/* WARNING: several calls may realloc the stack and invalidate `ra' */
ra = RA(i);
lua_assert(base == ci->u.l.base);
lua_assert(base <= L->top && L->top < L->stack + L->stacksize);
vmdispatch (GET_OPCODE(i)) {
vmcase(OP_MOVE,
setobjs2s(L, ra, RB(i));
)
vmcase(OP_LOADK,
TValue *rb = k + GETARG_Bx(i);
setobj2s(L, ra, rb);
)
vmcase(OP_LOADKX,
TValue *rb;
lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG);
rb = k + GETARG_Ax(*ci->u.l.savedpc++);
setobj2s(L, ra, rb);
)
vmcase(OP_LOADBOOL,
setbvalue(ra, GETARG_B(i));
if (GETARG_C(i)) ci->u.l.savedpc++; /* skip next instruction (if C) */
)
vmcase(OP_LOADNIL,
int b = GETARG_B(i);
do {
setnilvalue(ra++);
} while (b--);
)
vmcase(OP_GETUPVAL,
int b = GETARG_B(i);
setobj2s(L, ra, cl->upvals[b]->v);
)
vmcase(OP_GETTABUP,
int b = GETARG_B(i);
Protect(luaV_gettable(L, cl->upvals[b]->v, RKC(i), ra));
)
vmcase(OP_GETTABLE,
Protect(luaV_gettable(L, RB(i), RKC(i), ra));
)
vmcase(OP_SETTABUP,
int a = GETARG_A(i);
Protect(luaV_settable(L, cl->upvals[a]->v, RKB(i), RKC(i)));
)
vmcase(OP_SETUPVAL,
UpVal *uv = cl->upvals[GETARG_B(i)];
setobj(L, uv->v, ra);
luaC_barrier(L, uv, ra);
)
vmcase(OP_SETTABLE,
Protect(luaV_settable(L, ra, RKB(i), RKC(i)));
)
vmcase(OP_NEWTABLE,
int b = GETARG_B(i);
int c = GETARG_C(i);
Table *t = luaH_new(L);
sethvalue(L, ra, t);
if (b != 0 || c != 0)
luaH_resize(L, t, luaO_fb2int(b), luaO_fb2int(c));
checkGC(L, ra + 1);
)
vmcase(OP_SELF,
StkId rb = RB(i);
setobjs2s(L, ra+1, rb);
Protect(luaV_gettable(L, rb, RKC(i), ra));
)
vmcase(OP_ADD,
arith_op(luai_numadd, TM_ADD);
)
vmcase(OP_SUB,
arith_op(luai_numsub, TM_SUB);
)
vmcase(OP_MUL,
arith_op(luai_nummul, TM_MUL);
)
vmcase(OP_DIV,
arith_op(luai_numdiv, TM_DIV);
)
vmcase(OP_MOD,
arith_op(luai_nummod, TM_MOD);
)
vmcase(OP_POW,
arith_op(luai_numpow, TM_POW);
)
vmcase(OP_UNM,
TValue *rb = RB(i);
if (ttisnumber(rb)) {
lua_Number nb = nvalue(rb);
setnvalue(ra, luai_numunm(L, nb));
}
else {
Protect(luaV_arith(L, ra, rb, rb, TM_UNM));
}
)
vmcase(OP_NOT,
TValue *rb = RB(i);
int res = l_isfalse(rb); /* next assignment may change this value */
setbvalue(ra, res);
)
vmcase(OP_LEN,
Protect(luaV_objlen(L, ra, RB(i)));
)
vmcase(OP_CONCAT,
int b = GETARG_B(i);
int c = GETARG_C(i);
StkId rb;
L->top = base + c + 1; /* mark the end of concat operands */
Protect(luaV_concat(L, c - b + 1));
ra = RA(i); /* 'luav_concat' may invoke TMs and move the stack */
rb = b + base;
setobjs2s(L, ra, rb);
checkGC(L, (ra >= rb ? ra + 1 : rb));
L->top = ci->top; /* restore top */
)
vmcase(OP_JMP,
dojump(ci, i, 0);
)
vmcase(OP_EQ,
TValue *rb = RKB(i);
TValue *rc = RKC(i);
Protect(
if (cast_int(equalobj(L, rb, rc)) != GETARG_A(i))
ci->u.l.savedpc++;
else
donextjump(ci);
)
)
vmcase(OP_LT,
Protect(
if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i))
ci->u.l.savedpc++;
else
donextjump(ci);
)
)
vmcase(OP_LE,
Protect(
if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i))
ci->u.l.savedpc++;
else
donextjump(ci);
)
)
vmcase(OP_TEST,
if (GETARG_C(i) ? l_isfalse(ra) : !l_isfalse(ra))
ci->u.l.savedpc++;
else
donextjump(ci);
)
vmcase(OP_TESTSET,
TValue *rb = RB(i);
if (GETARG_C(i) ? l_isfalse(rb) : !l_isfalse(rb))
ci->u.l.savedpc++;
else {
setobjs2s(L, ra, rb);
donextjump(ci);
}
)
vmcase(OP_CALL,
int b = GETARG_B(i);
int nresults = GETARG_C(i) - 1;
if (b != 0) L->top = ra+b; /* else previous instruction set top */
if (luaD_precall(L, ra, nresults)) { /* C function? */
if (nresults >= 0) L->top = ci->top; /* adjust results */
base = ci->u.l.base;
}
else { /* Lua function */
ci = L->ci;
ci->callstatus |= CIST_REENTRY;
goto newframe; /* restart luaV_execute over new Lua function */
}
)
vmcase(OP_TAILCALL,
int b = GETARG_B(i);
if (b != 0) L->top = ra+b; /* else previous instruction set top */
lua_assert(GETARG_C(i) - 1 == LUA_MULTRET);
if (luaD_precall(L, ra, LUA_MULTRET)) /* C function? */
base = ci->u.l.base;
else {
/* tail call: put called frame (n) in place of caller one (o) */
CallInfo *nci = L->ci; /* called frame */
CallInfo *oci = nci->previous; /* caller frame */
StkId nfunc = nci->func; /* called function */
StkId ofunc = oci->func; /* caller function */
/* last stack slot filled by 'precall' */
StkId lim = nci->u.l.base + getproto(nfunc)->numparams;
int aux;
/* close all upvalues from previous call */
if (cl->p->sizep > 0) luaF_close(L, oci->u.l.base);
/* move new frame into old one */
for (aux = 0; nfunc + aux < lim; aux++)
setobjs2s(L, ofunc + aux, nfunc + aux);
oci->u.l.base = ofunc + (nci->u.l.base - nfunc); /* correct base */
oci->top = L->top = ofunc + (L->top - nfunc); /* correct top */
oci->u.l.savedpc = nci->u.l.savedpc;
oci->callstatus |= CIST_TAIL; /* function was tail called */
ci = L->ci = oci; /* remove new frame */
lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize);
goto newframe; /* restart luaV_execute over new Lua function */
}
)
vmcasenb(OP_RETURN,
int b = GETARG_B(i);
if (b != 0) L->top = ra+b-1;
if (cl->p->sizep > 0) luaF_close(L, base);
b = luaD_poscall(L, ra);
if (!(ci->callstatus & CIST_REENTRY)) /* 'ci' still the called one */
return; /* external invocation: return */
else { /* invocation via reentry: continue execution */
ci = L->ci;
if (b) L->top = ci->top;
lua_assert(isLua(ci));
lua_assert(GET_OPCODE(*((ci)->u.l.savedpc - 1)) == OP_CALL);
goto newframe; /* restart luaV_execute over new Lua function */
}
)
vmcase(OP_FORLOOP,
lua_Number step = nvalue(ra+2);
lua_Number idx = luai_numadd(L, nvalue(ra), step); /* increment index */
lua_Number limit = nvalue(ra+1);
if (luai_numlt(L, 0, step) ? luai_numle(L, idx, limit)
: luai_numle(L, limit, idx)) {
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
setnvalue(ra, idx); /* update internal index... */
setnvalue(ra+3, idx); /* ...and external index */
}
)
vmcase(OP_FORPREP,
const TValue *init = ra;
const TValue *plimit = ra+1;
const TValue *pstep = ra+2;
if (!tonumber(init, ra))
luaG_runerror(L, LUA_QL("for") " initial value must be a number");
else if (!tonumber(plimit, ra+1))
luaG_runerror(L, LUA_QL("for") " limit must be a number");
else if (!tonumber(pstep, ra+2))
luaG_runerror(L, LUA_QL("for") " step must be a number");
setnvalue(ra, luai_numsub(L, nvalue(ra), nvalue(pstep)));
ci->u.l.savedpc += GETARG_sBx(i);
)
vmcasenb(OP_TFORCALL,
StkId cb = ra + 3; /* call base */
setobjs2s(L, cb+2, ra+2);
setobjs2s(L, cb+1, ra+1);
setobjs2s(L, cb, ra);
L->top = cb + 3; /* func. + 2 args (state and index) */
Protect(luaD_call(L, cb, GETARG_C(i), 1));
L->top = ci->top;
i = *(ci->u.l.savedpc++); /* go to next instruction */
ra = RA(i);
lua_assert(GET_OPCODE(i) == OP_TFORLOOP);
goto l_tforloop;
)
vmcase(OP_TFORLOOP,
l_tforloop:
if (!ttisnil(ra + 1)) { /* continue loop? */
setobjs2s(L, ra, ra + 1); /* save control variable */
ci->u.l.savedpc += GETARG_sBx(i); /* jump back */
}
)
vmcase(OP_SETLIST,
int n = GETARG_B(i);
int c = GETARG_C(i);
int last;
Table *h;
if (n == 0) n = cast_int(L->top - ra) - 1;
if (c == 0) {
lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_EXTRAARG);
c = GETARG_Ax(*ci->u.l.savedpc++);
}
luai_runtimecheck(L, ttistable(ra));
h = hvalue(ra);
last = ((c-1)*LFIELDS_PER_FLUSH) + n;
if (last > h->sizearray) /* needs more space? */
luaH_resizearray(L, h, last); /* pre-allocate it at once */
for (; n > 0; n--) {
TValue *val = ra+n;
luaH_setint(L, h, last--, val);
luaC_barrierback(L, obj2gco(h), val);
}
L->top = ci->top; /* correct top (in case of previous open call) */
)
vmcase(OP_CLOSURE,
Proto *p = cl->p->p[GETARG_Bx(i)];
Closure *ncl = getcached(p, cl->upvals, base); /* cached closure */
if (ncl == NULL) /* no match? */
pushclosure(L, p, cl->upvals, base, ra); /* create a new one */
else
setclLvalue(L, ra, ncl); /* push cashed closure */
checkGC(L, ra + 1);
)
vmcase(OP_VARARG,
int b = GETARG_B(i) - 1;
int j;
int n = cast_int(base - ci->func) - cl->p->numparams - 1;
if (b < 0) { /* B == 0? */
b = n; /* get all var. arguments */
Protect(luaD_checkstack(L, n));
ra = RA(i); /* previous call may change the stack */
L->top = ra + n;
}
for (j = 0; j < b; j++) {
if (j < n) {
setobjs2s(L, ra + j, base - n + j);
}
else {
setnilvalue(ra + j);
}
}
)
vmcase(OP_EXTRAARG,
lua_assert(0);
)
}
}
}

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@ -0,0 +1,44 @@
/*
** $Id: lvm.h,v 2.18.1.1 2013/04/12 18:48:47 roberto Exp $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lvm_h
#define lvm_h
#include "ldo.h"
#include "lobject.h"
#include "ltm.h"
#define tostring(L,o) (ttisstring(o) || (luaV_tostring(L, o)))
#define tonumber(o,n) (ttisnumber(o) || (((o) = luaV_tonumber(o,n)) != NULL))
#define equalobj(L,o1,o2) (ttisequal(o1, o2) && luaV_equalobj_(L, o1, o2))
#define luaV_rawequalobj(o1,o2) equalobj(NULL,o1,o2)
/* not to called directly */
LUAI_FUNC int luaV_equalobj_ (lua_State *L, const TValue *t1, const TValue *t2);
LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC const TValue *luaV_tonumber (const TValue *obj, TValue *n);
LUAI_FUNC int luaV_tostring (lua_State *L, StkId obj);
LUAI_FUNC void luaV_gettable (lua_State *L, const TValue *t, TValue *key,
StkId val);
LUAI_FUNC void luaV_settable (lua_State *L, const TValue *t, TValue *key,
StkId val);
LUAI_FUNC void luaV_finishOp (lua_State *L);
LUAI_FUNC void luaV_execute (lua_State *L);
LUAI_FUNC void luaV_concat (lua_State *L, int total);
LUAI_FUNC void luaV_arith (lua_State *L, StkId ra, const TValue *rb,
const TValue *rc, TMS op);
LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
#endif

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@ -0,0 +1,76 @@
/*
** $Id: lzio.c,v 1.35.1.1 2013/04/12 18:48:47 roberto Exp $
** Buffered streams
** See Copyright Notice in lua.h
*/
#include <string.h>
#define lzio_c
#define LUA_CORE
#include "lua.h"
#include "llimits.h"
#include "lmem.h"
#include "lstate.h"
#include "lzio.h"
int luaZ_fill (ZIO *z) {
size_t size;
lua_State *L = z->L;
const char *buff;
lua_unlock(L);
buff = z->reader(L, z->data, &size);
lua_lock(L);
if (buff == NULL || size == 0)
return EOZ;
z->n = size - 1; /* discount char being returned */
z->p = buff;
return cast_uchar(*(z->p++));
}
void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader, void *data) {
z->L = L;
z->reader = reader;
z->data = data;
z->n = 0;
z->p = NULL;
}
/* --------------------------------------------------------------- read --- */
size_t luaZ_read (ZIO *z, void *b, size_t n) {
while (n) {
size_t m;
if (z->n == 0) { /* no bytes in buffer? */
if (luaZ_fill(z) == EOZ) /* try to read more */
return n; /* no more input; return number of missing bytes */
else {
z->n++; /* luaZ_fill consumed first byte; put it back */
z->p--;
}
}
m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
memcpy(b, z->p, m);
z->n -= m;
z->p += m;
b = (char *)b + m;
n -= m;
}
return 0;
}
/* ------------------------------------------------------------------------ */
char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) {
if (n > buff->buffsize) {
if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
luaZ_resizebuffer(L, buff, n);
}
return buff->buffer;
}

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@ -0,0 +1,65 @@
/*
** $Id: lzio.h,v 1.26.1.1 2013/04/12 18:48:47 roberto Exp $
** Buffered streams
** See Copyright Notice in lua.h
*/
#ifndef lzio_h
#define lzio_h
#include "lua.h"
#include "lmem.h"
#define EOZ (-1) /* end of stream */
typedef struct Zio ZIO;
#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z))
typedef struct Mbuffer {
char *buffer;
size_t n;
size_t buffsize;
} Mbuffer;
#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
#define luaZ_buffer(buff) ((buff)->buffer)
#define luaZ_sizebuffer(buff) ((buff)->buffsize)
#define luaZ_bufflen(buff) ((buff)->n)
#define luaZ_resetbuffer(buff) ((buff)->n = 0)
#define luaZ_resizebuffer(L, buff, size) \
(luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
(buff)->buffsize = size)
#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0)
LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n);
LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
void *data);
LUAI_FUNC size_t luaZ_read (ZIO* z, void* b, size_t n); /* read next n bytes */
/* --------- Private Part ------------------ */
struct Zio {
size_t n; /* bytes still unread */
const char *p; /* current position in buffer */
lua_Reader reader; /* reader function */
void* data; /* additional data */
lua_State *L; /* Lua state (for reader) */
};
LUAI_FUNC int luaZ_fill (ZIO *z);
#endif

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/** @file
A simple, basic, application showing how the Hello application could be
built using the "Standard C Libraries" from StdLib.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
//#include <Uefi.h>
//#include <Library/UefiLib.h>
//#include <Library/ShellCEntryLib.h>
#include <stdio.h>
/***
Demonstrates basic workings of the main() function by displaying a
welcoming message.
Note that the UEFI command line is composed of 16-bit UCS2 wide characters.
The easiest way to access the command line parameters is to cast Argv as:
wchar_t **wArgv = (wchar_t **)Argv;
@param[in] Argc Number of argument tokens pointed to by Argv.
@param[in] Argv Array of Argc pointers to command line tokens.
@retval 0 The application exited normally.
@retval Other An error occurred.
***/
int
main (
IN int Argc,
IN char **Argv
)
{
puts("Hello there fellow Programmer.");
puts("Welcome to the world of EDK II.");
return 0;
}

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@ -0,0 +1,37 @@
## @file
# A simple, basic, application showing how the Hello application could be
# built using the "Standard C Libraries" from StdLib.
#
# Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = Main
FILE_GUID = 4ea97c46-7491-4dfd-b442-747010f3ce5f
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
Main.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
ShellPkg/ShellPkg.dec
[LibraryClasses]
LibC
LibStdio

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@ -0,0 +1,655 @@
/** @file
A simple "fuzzer" application for OrderedCollectionLib, reading commands from
the standard input, and writing results to the standard output.
Make sure you configure your platform so that the console stderr device is
visible to the user (or else run the program from wherever stderr is visible
per default, eg. serial line).
Copyright (C) 2014, Red Hat, Inc.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available
under the terms and conditions of the BSD License which accompanies this
distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <assert.h> // assert()
#include <errno.h> // errno
#include <limits.h> // INT_MIN
#include <stdio.h> // fgets()
#include <stdlib.h> // EXIT_FAILURE
#include <string.h> // strerror()
#include <unistd.h> // getopt()
#include <Library/OrderedCollectionLib.h>
//
// We allow the user to select between stdin+stdout and regular input+output
// files via command line options. We don't rely on shell redirection for two
// reasons:
//
// - The "old shell" doesn't support input redirection (<a, <);
//
// - The "new shell" supports input redirection (<a, <), but those redirections
// break fgets(stdin). Both when redirecting stdin from an ASCII file (<a),
// and when redirecting stdin from a UCS-2 file (<), the very first fgets()
// spirals into an infinite loop, spewing ^@ on the serial console.
//
// Performing fopen() manually (made available to the user with the -i option),
// and reading from that stream with fgets() work under both old and new shell.
// Only ASCII encoded files are supported.
//
static FILE *Input, *Output;
//
// Define a (potentially aggregate) key type.
//
typedef struct {
int Value;
} USER_KEY;
//
// The user structure includes the key as one of its fields. (There can be
// several, optionally differently typed, keys, if we link user structures into
// several collections, with different comparators.)
//
typedef struct {
unsigned char Supplementary1[4];
USER_KEY Key;
unsigned short Supplementary2[2];
} USER_STRUCT;
/**
Compare a standalone key against a user structure containing an embedded key.
@param[in] StandaloneKey Pointer to the bare key.
@param[in] UserStruct Pointer to the user structure with the embedded
key.
@retval <0 If StandaloneKey compares less than UserStruct's key.
@retval 0 If StandaloneKey compares equal to UserStruct's key.
@retval >0 If StandaloneKey compares greater than UserStruct's key.
**/
static
INTN
EFIAPI
KeyCompare (
IN CONST VOID *StandaloneKey,
IN CONST VOID *UserStruct
)
{
const USER_KEY *CmpKey;
const USER_STRUCT *CmpStruct;
CmpKey = StandaloneKey;
CmpStruct = UserStruct;
return CmpKey->Value < CmpStruct->Key.Value ? -1 :
CmpKey->Value > CmpStruct->Key.Value ? 1 :
0;
}
/**
Comparator function type for two user structures.
@param[in] UserStruct1 Pointer to the first user structure.
@param[in] UserStruct2 Pointer to the second user structure.
@retval <0 If UserStruct1 compares less than UserStruct2.
@retval 0 If UserStruct1 compares equal to UserStruct2.
@retval >0 If UserStruct1 compares greater than UserStruct2.
**/
static
INTN
EFIAPI
UserStructCompare (
IN CONST VOID *UserStruct1,
IN CONST VOID *UserStruct2
)
{
const USER_STRUCT *CmpStruct1;
CmpStruct1 = UserStruct1;
return KeyCompare (&CmpStruct1->Key, UserStruct2);
}
/**
Empty the collection by iterating forward through its entries.
This function demonstrates that iterators different from the one being
removed remain valid.
@param[in,out] Collection The collection to empty.
**/
static void
CmdForwardEmpty (
IN OUT ORDERED_COLLECTION *Collection
)
{
ORDERED_COLLECTION_ENTRY *Entry;
Entry = OrderedCollectionMin (Collection);
while (Entry != NULL) {
ORDERED_COLLECTION_ENTRY *Next;
void *Ptr;
USER_STRUCT *UserStruct;
Next = OrderedCollectionNext (Entry);
OrderedCollectionDelete (Collection, Entry, &Ptr);
UserStruct = Ptr;
fprintf (Output, "%s: %d: removed\n", __FUNCTION__, UserStruct->Key.Value);
free (UserStruct);
Entry = Next;
}
}
/**
Empty the collection by iterating backward through its entries.
This function demonstrates that iterators different from the one being
removed remain valid.
@param[in,out] Collection The collection to empty.
**/
static void
CmdBackwardEmpty (
IN OUT ORDERED_COLLECTION *Collection
)
{
ORDERED_COLLECTION_ENTRY *Entry;
Entry = OrderedCollectionMax (Collection);
while (Entry != NULL) {
ORDERED_COLLECTION_ENTRY *Prev;
void *Ptr;
USER_STRUCT *UserStruct;
Prev = OrderedCollectionPrev (Entry);
OrderedCollectionDelete (Collection, Entry, &Ptr);
UserStruct = Ptr;
fprintf (Output, "%s: %d: removed\n", __FUNCTION__, UserStruct->Key.Value);
free (UserStruct);
Entry = Prev;
}
}
/**
List the user structures linked into the collection, in increasing order.
@param[in] Collection The collection to list.
**/
static void
CmdForwardList (
IN ORDERED_COLLECTION *Collection
)
{
ORDERED_COLLECTION_ENTRY *Entry;
for (Entry = OrderedCollectionMin (Collection); Entry != NULL;
Entry = OrderedCollectionNext (Entry)) {
USER_STRUCT *UserStruct;
UserStruct = OrderedCollectionUserStruct (Entry);
fprintf (Output, "%s: %d\n", __FUNCTION__, UserStruct->Key.Value);
}
}
/**
List the user structures linked into the collection, in decreasing order.
@param[in] Collection The collection to list.
**/
static void
CmdBackwardList (
IN ORDERED_COLLECTION *Collection
)
{
ORDERED_COLLECTION_ENTRY *Entry;
for (Entry = OrderedCollectionMax (Collection); Entry != NULL;
Entry = OrderedCollectionPrev (Entry)) {
USER_STRUCT *UserStruct;
UserStruct = OrderedCollectionUserStruct (Entry);
fprintf (Output, "%s: %d\n", __FUNCTION__, UserStruct->Key.Value);
}
}
/**
Create a new user structure and attempt to insert it into the collection.
@param[in] Value The key value of the user structure to create.
@param[in,out] Collection The collection to insert the new user structure
into.
**/
static void
CmdInsert (
IN int Value,
IN OUT ORDERED_COLLECTION *Collection
)
{
USER_STRUCT *UserStruct, *UserStruct2;
RETURN_STATUS Status;
ORDERED_COLLECTION_ENTRY *Entry;
UserStruct = calloc (1, sizeof *UserStruct);
if (UserStruct == NULL) {
fprintf (Output, "%s: %d: calloc(): out of memory\n", __FUNCTION__, Value);
return;
}
UserStruct->Key.Value = Value;
Status = OrderedCollectionInsert (Collection, &Entry, UserStruct);
switch (Status) {
case RETURN_OUT_OF_RESOURCES:
fprintf (Output, "%s: %d: OrderedCollectionInsert(): out of memory\n",
__FUNCTION__, Value);
goto ReleaseUserStruct;
case RETURN_ALREADY_STARTED:
UserStruct2 = OrderedCollectionUserStruct (Entry);
assert (UserStruct != UserStruct2);
assert (UserStruct2->Key.Value == Value);
fprintf (Output, "%s: %d: already exists\n", __FUNCTION__,
UserStruct2->Key.Value);
goto ReleaseUserStruct;
default:
assert (Status == RETURN_SUCCESS);
break;
}
assert (OrderedCollectionUserStruct (Entry) == UserStruct);
fprintf (Output, "%s: %d: inserted\n", __FUNCTION__, Value);
return;
ReleaseUserStruct:
free (UserStruct);
}
/**
Look up a user structure by key in the collection and print it.
@param[in] Value The key of the user structure to find.
@param[in] Collection The collection to search for the user structure with
the key.
**/
static void
CmdFind (
IN int Value,
IN ORDERED_COLLECTION *Collection
)
{
USER_KEY StandaloneKey;
ORDERED_COLLECTION_ENTRY *Entry;
USER_STRUCT *UserStruct;
StandaloneKey.Value = Value;
Entry = OrderedCollectionFind (Collection, &StandaloneKey);
if (Entry == NULL) {
fprintf (Output, "%s: %d: not found\n", __FUNCTION__, Value);
return;
}
UserStruct = OrderedCollectionUserStruct (Entry);
assert (UserStruct->Key.Value == StandaloneKey.Value);
fprintf (Output, "%s: %d: found\n", __FUNCTION__, UserStruct->Key.Value);
}
/**
Look up a user structure by key in the collection and delete it.
@param[in] Value The key of the user structure to find.
@param[in] Collection The collection to search for the user structure with
the key.
**/
static void
CmdDelete (
IN int Value,
IN ORDERED_COLLECTION *Collection
)
{
USER_KEY StandaloneKey;
ORDERED_COLLECTION_ENTRY *Entry;
void *Ptr;
USER_STRUCT *UserStruct;
StandaloneKey.Value = Value;
Entry = OrderedCollectionFind (Collection, &StandaloneKey);
if (Entry == NULL) {
fprintf (Output, "%s: %d: not found\n", __FUNCTION__, Value);
return;
}
OrderedCollectionDelete (Collection, Entry, &Ptr);
UserStruct = Ptr;
assert (UserStruct->Key.Value == StandaloneKey.Value);
fprintf (Output, "%s: %d: removed\n", __FUNCTION__, UserStruct->Key.Value);
free (UserStruct);
}
typedef struct {
const char *Command;
void (*Function) (ORDERED_COLLECTION *Collection);
const char *Description;
} KEYLESS_COMMAND;
typedef struct {
const char *Command;
void (*Function) (int Value, ORDERED_COLLECTION *Collection);
const char *Description;
} KEYED_COMMAND;
static const KEYLESS_COMMAND KeylessCommands[] = {
{ "forward-empty", CmdForwardEmpty,
"empty the collection iterating forward" },
{ "fe", CmdForwardEmpty,
"shorthand for forward-empty" },
{ "backward-empty", CmdBackwardEmpty,
"empty the collection iterating backward" },
{ "be", CmdBackwardEmpty,
"shorthand for backward-empty" },
{ "forward-list", CmdForwardList,
"list contents, iterating forward" },
{ "fl", CmdForwardList,
"shorthand for forward-list" },
{ "backward-list", CmdBackwardList,
"list contents, iterating backward" },
{ "bl", CmdBackwardList,
"shorthand for backward-list" },
{ NULL }
};
static const KEYED_COMMAND KeyedCommands[] = {
{ "insert ", CmdInsert, "insert value into collection" },
{ "i ", CmdInsert, "shorthand for insert" },
{ "find ", CmdFind, "find value in collection" },
{ "f ", CmdFind, "shorthand for find" },
{ "delete ", CmdDelete, "delete value from collection" },
{ "d ", CmdDelete, "shorthand for delete" },
{ NULL }
};
/**
List the supported commands on stderr.
**/
static void
ListCommands (
void
)
{
const KEYLESS_COMMAND *KeylessCmd;
const KEYED_COMMAND *KeyedCmd;
fprintf (stderr, "Supported commands:\n\n");
for (KeylessCmd = KeylessCommands; KeylessCmd->Command != NULL;
++KeylessCmd) {
fprintf (stderr, "%-14s: %s\n", KeylessCmd->Command,
KeylessCmd->Description);
}
for (KeyedCmd = KeyedCommands; KeyedCmd->Command != NULL; ++KeyedCmd) {
fprintf (stderr, "%-9s<int>: %s\n", KeyedCmd->Command,
KeyedCmd->Description);
}
}
/**
Configure stdio FILEs that we'll use for input and output.
@param[in] ArgC The number of elements in ArgV, from main(). The environment
is required to ensure ArgC >= 1 (ie. that the program name,
ArgV[0], is available).
@param[in] ArgV Command line argument list, from main().
**/
static void
SetupInputOutput (
IN int ArgC,
IN char **ArgV
)
{
char *InputName, *OutputName;
int Loop;
assert (ArgC >= 1);
InputName = NULL;
OutputName = NULL;
Loop = 1;
while (Loop) {
switch (getopt (ArgC, ArgV, ":i:o:h")) {
case 'i':
InputName = optarg;
break;
case 'o':
OutputName = optarg;
break;
case 'h':
fprintf (stderr,
"%1$s: simple OrderedCollectionLib tester\n"
"\n"
"Usage: 1. %1$s [-i InputFile] [-o OutputFile]\n"
" 2. %1$s -h\n"
"\n"
"Options:\n"
" -i InputFile : read commands from InputFile\n"
" (will read from stdin if absent)\n"
" -o OutputFile: write command responses to OutputFile\n"
" (will write to stdout if absent)\n"
" -h : print this help and exit\n"
"\n", ArgV[0]);
ListCommands ();
exit (EXIT_SUCCESS);
//
// The current "compatibility" getopt() implementation doesn't support optopt,
// but it gracefully degrades these branches to the others (one of the optarg
// ones or the excess operands one).
//
#if 0
case ':':
fprintf (stderr, "%s: option -%c requires an argument; pass -h for "
"help\n", ArgV[0], optopt);
exit (EXIT_FAILURE);
case '?':
fprintf (stderr, "%s: unknown option -%c; pass -h for help\n", ArgV[0],
optopt);
exit (EXIT_FAILURE);
#endif
case -1:
if (optind != ArgC) {
fprintf (stderr, "%s: excess operands on command line; pass -h for "
"help\n", ArgV[0]);
exit (EXIT_FAILURE);
}
Loop = 0;
break;
default:
assert (0);
}
}
if (InputName == NULL) {
Input = stdin;
} else {
Input = fopen (InputName, "r");
if (Input == NULL) {
fprintf (stderr, "%s: fopen(\"%s\", \"r\"): %s\n", ArgV[0], InputName,
strerror (errno));
exit (EXIT_FAILURE);
}
}
if (OutputName == NULL) {
Output = stdout;
} else {
Output = fopen (OutputName, "w");
if (Output == NULL) {
fprintf (stderr, "%s: fopen(\"%s\", \"w\"): %s\n", ArgV[0], OutputName,
strerror (errno));
exit (EXIT_FAILURE);
}
}
//
// When reading commands from the standard input, assume interactive mode,
// and list the supported commands. However, delay this until both streams
// are set up.
//
if (InputName == NULL) {
ListCommands ();
}
}
int
main (
IN int ArgC,
IN char **ArgV
)
{
int RetVal;
ORDERED_COLLECTION *Collection;
char Line[256];
SetupInputOutput (ArgC, ArgV);
Collection = OrderedCollectionInit (UserStructCompare, KeyCompare);
if (Collection == NULL) {
fprintf (stderr, "%s: OrderedCollectionInit(): out of memory\n",
__FUNCTION__);
return EXIT_FAILURE;
}
RetVal = EXIT_SUCCESS;
while (fgets (Line, sizeof Line, Input) != NULL) {
size_t Length;
const KEYLESS_COMMAND *KeylessCmd;
const KEYED_COMMAND *KeyedCmd;
Length = strlen (Line);
assert (Length > 0);
if (Line[Length - 1] != '\n') {
fprintf (stderr, "%s: overlong line\n", __FUNCTION__);
RetVal = EXIT_FAILURE;
break;
}
//
// Strip [\r]\n.
//
Line[Length - 1] = '\0';
if (Length >= 2 && Line[Length - 2] == '\r') {
Line[Length - 2] = '\0';
}
//
// Ignore empty lines and comments.
//
if (Line[0] == '\0' || Line[0] == '#') {
if (Input != stdin) {
//
// ... but echo them back in non-interactive mode.
//
fprintf (Output, "%s\n", Line);
}
continue;
}
//
// Ironically, this is the kind of loop that should be replaced with an
// ORDERED_COLLECTION.
//
for (KeylessCmd = KeylessCommands; KeylessCmd->Command != NULL;
++KeylessCmd) {
if (strcmp (KeylessCmd->Command, Line) == 0) {
KeylessCmd->Function (Collection);
break;
}
}
if (KeylessCmd->Command != NULL) {
continue;
}
for (KeyedCmd = KeyedCommands; KeyedCmd->Command != NULL; ++KeyedCmd) {
size_t CmdLength;
CmdLength = strlen (KeyedCmd->Command);
assert (CmdLength >= 2);
if (strncmp (KeyedCmd->Command, Line, CmdLength) == 0) {
char *CommandArg, *EndPtr;
long Value;
CommandArg = Line + CmdLength;
errno = 0;
Value = strtol (CommandArg, &EndPtr, 10);
if (EndPtr == CommandArg || // no conversion performed
errno != 0 || // not in long's range, etc
*EndPtr != '\0' || // final string not empty
Value < INT_MIN || Value > INT_MAX // parsed long not in int range
) {
fprintf (stderr, "%s: %.*s: \"%s\": not an int\n", __FUNCTION__,
(int)(CmdLength - 1), Line, CommandArg);
} else {
KeyedCmd->Function (Value, Collection);
}
break;
}
}
if (KeyedCmd->Command != NULL) {
continue;
}
fprintf (stderr, "%s: \"%s\": unknown command\n", __FUNCTION__, Line);
}
if (RetVal == EXIT_SUCCESS && ferror (Input)) {
fprintf (stderr, "%s: fgets(): %s\n", __FUNCTION__, strerror (errno));
RetVal = EXIT_FAILURE;
}
CmdForwardEmpty (Collection);
OrderedCollectionUninit (Collection);
return RetVal;
}

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## @file
# A simple "fuzzer" application for OrderedCollectionLib, reading commands
# from the standard input, and writing results to the standard output.
#
# Copyright (C) 2014, Red Hat, Inc.
# Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials are licensed and made available
# under the terms and conditions of the BSD License which accompanies this
# distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
# IMPLIED.
##
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = OrderedCollectionTest
FILE_GUID = E6C7EBB7-1604-4FCB-8F87-B3A6F48730AE
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
OrderedCollectionTest.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
ShellPkg/ShellPkg.dec
[LibraryClasses]
LibC
LibStdio
DevMedia
OrderedCollectionLib

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## @file
# Small test script generator for OrderedCollectionTest.
#
# Usage:
# - generate script: sh gentest.sh >input.txt
# - run script with tester: OrderedCollectionTest -i input.txt -o output.txt
#
# Copyright (C) 2014, Red Hat, Inc.
#
# This program and the accompanying materials are licensed and made available
# under the terms and conditions of the BSD License which accompanies this
# distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
# IMPLIED.
##
set -e -u -C
RANGE_START=0
RANGE_STOP=9999
gen_rnd_insert()
{
shuf --input-range=$RANGE_START-$RANGE_STOP | sed 's/^/insert /'
}
gen_rnd_delete()
{
shuf --input-range=$RANGE_START-$RANGE_STOP | sed 's/^/delete /'
}
gen_mon_inc_insert()
{
seq $RANGE_START $RANGE_STOP | sed 's/^/insert /'
}
gen_mon_inc_delete()
{
seq $RANGE_START $RANGE_STOP | sed 's/^/delete /'
}
gen_mon_dec_delete()
{
seq $RANGE_START $RANGE_STOP | tac | sed 's/^/delete /'
}
{
echo '# populate the tree in random order and empty it iterating forward'
gen_rnd_insert
echo forward-empty
echo
echo '# populate the tree in random order and empty it iterating backward'
gen_rnd_insert
echo backward-empty
echo
echo '# populate the tree in random order, list it in increasing and'
echo '# decreasing order, then empty it in random order'
gen_rnd_insert
echo forward-list
echo backward-list
gen_rnd_delete
echo
echo '# populate the tree in monotonically increasing order, then undo it'
echo '# piecewise in the same order'
gen_mon_inc_insert
gen_mon_inc_delete
echo
echo '# populate the tree in monotonically increasing order, then undo it'
echo '# piecewise in reverse order'
gen_mon_inc_insert
gen_mon_dec_delete
echo
echo '# populate the tree randomly, trigger a run of collisions, then exit'
echo '# and let CmdForwardEmpty() empty the tree'
gen_rnd_insert
gen_mon_inc_insert
} \
| unix2dos

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/** @file
Python Module configuration.
Copyright (c) 2011-2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
/* This file contains the table of built-in modules.
See init_builtin() in import.c. */
#include "Python.h"
extern void initarray(void);
extern void init_ast(void);
extern void initbinascii(void);
extern void init_bisect(void);
extern void initcmath(void);
extern void init_codecs(void);
extern void init_collections(void);
extern void initcPickle(void);
extern void initcStringIO(void);
extern void init_csv(void);
extern void init_ctypes(void);
extern void initdatetime(void);
extern void initedk2(void);
extern void initerrno(void);
extern void init_functools(void);
extern void initfuture_builtins(void);
extern void initgc(void);
extern void init_heapq(void);
extern void init_hotshot(void);
extern void initimp(void);
extern void init_io(void);
extern void inititertools(void);
extern void init_json(void);
extern void init_lsprof(void);
extern void initmath(void);
extern void init_md5(void);
extern void initmmap(void);
extern void initoperator(void);
extern void initparser(void);
extern void initpyexpat(void);
extern void init_random(void);
extern void initselect(void);
extern void init_sha(void);
extern void init_sha256(void);
extern void init_sha512(void);
extern void initsignal(void);
extern void init_socket(void);
extern void init_sre(void);
extern void initstrop(void);
extern void init_struct(void);
extern void init_subprocess(void);
extern void init_symtable(void);
extern void initthread(void);
extern void inittime(void);
extern void initunicodedata(void);
extern void init_weakref(void);
extern void init_winreg(void);
extern void initxxsubtype(void);
extern void initzipimport(void);
extern void initzlib(void);
extern void PyMarshal_Init(void);
extern void _PyWarnings_Init(void);
extern void init_multibytecodec(void);
extern void init_codecs_cn(void);
extern void init_codecs_hk(void);
extern void init_codecs_iso2022(void);
extern void init_codecs_jp(void);
extern void init_codecs_kr(void);
extern void init_codecs_tw(void);
struct _inittab _PyImport_Inittab[] = {
//{"_ast", init_ast},
//{"_bisect", init_bisect}, /* A fast version of bisect.py */
//{"_csv", init_csv},
//{"_heapq", init_heapq}, /* A fast version of heapq.py */
//{"_io", init_io},
//{"_json", init_json},
//{"_md5", init_md5},
//{"_sha", init_sha},
//{"_sha256", init_sha256},
//{"_sha512", init_sha512},
//{"_socket", init_socket},
//{"_symtable", init_symtable},
//{"array", initarray},
//{"cmath", initcmath},
//{"cPickle", initcPickle},
//{"datetime", initdatetime},
//{"future_builtins", initfuture_builtins},
//{"parser", initparser},
//{"pyexpat", initpyexpat},
//{"select", initselect},
//{"signal", initsignal},
//{"strop", initstrop}, /* redefines some string operations that are 100-1000 times faster */
//{"unicodedata", initunicodedata},
//{"xxsubtype", initxxsubtype},
//{"zipimport", initzipimport},
//{"zlib", initzlib},
/* CJK codecs */
//{"_multibytecodec", init_multibytecodec},
//{"_codecs_cn", init_codecs_cn},
//{"_codecs_hk", init_codecs_hk},
//{"_codecs_iso2022", init_codecs_iso2022},
//{"_codecs_jp", init_codecs_jp},
//{"_codecs_kr", init_codecs_kr},
//{"_codecs_tw", init_codecs_tw},
#ifdef WITH_THREAD
{"thread", initthread},
#endif
/* These modules are required for the full built-in help() facility provided by pydoc. */
{"_codecs", init_codecs},
{"_collections", init_collections},
{"_functools", init_functools},
{"_random", init_random},
{"_sre", init_sre},
{"_struct", init_struct}, /* Required by the logging package. */
{"_weakref", init_weakref},
{"binascii", initbinascii},
{"cStringIO", initcStringIO}, /* Required by several modules, such as logging. */
{"gc", initgc},
{"itertools", inititertools},
{"math", initmath},
{"operator", initoperator},
{"time", inittime},
/* These four modules should always be built in. */
{"edk2", initedk2},
{"errno", initerrno},
{"imp", initimp}, /* We get this for free from Python/import.c */
{"marshal", PyMarshal_Init}, /* We get this for free from Python/marshal.c */
/* These entries are here for sys.builtin_module_names */
{"__main__", NULL},
{"__builtin__", NULL},
{"sys", NULL},
{"exceptions", NULL},
{"_warnings", _PyWarnings_Init},
/* Sentinel */
{0, 0}
};

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/** @file
Return the initial module search path.
Search in specified locations for the associated Python libraries.
Py_GetPath returns module_search_path.
Py_GetPrefix returns PREFIX
Py_GetExec_Prefix returns PREFIX
Py_GetProgramFullPath returns the full path to the python executable.
These are built dynamically so that the proper volume name can be prefixed
to the paths.
For the EDK II, UEFI, implementation of Python, PREFIX and EXEC_PREFIX
are set as follows:
PREFIX = /Efi/StdLib
EXEC_PREFIX = PREFIX
The following final paths are assumed:
/Efi/Tools/Python.efi The Python executable.
/Efi/StdLib/lib/python.VERSION The platform independent Python modules.
/Efi/StdLib/lib/python.VERSION/dynalib Dynamically loadable Python extension modules.
Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Python.h>
#include <osdefs.h>
#include <ctype.h>
#ifdef __cplusplus
extern "C" {
#endif
/* VERSION must be at least two characters long. */
#ifndef VERSION
#define VERSION "27"
#endif
#ifndef VPATH
#define VPATH "."
#endif
/* Search path entry delimiter */
#ifdef DELIM
#define sDELIM ";"
#endif
#ifndef PREFIX
#define PREFIX "/Efi/StdLib"
#endif
#ifndef EXEC_PREFIX
#define EXEC_PREFIX PREFIX
#endif
#ifndef LIBPYTHON
#define LIBPYTHON "lib/python." VERSION
#endif
#ifndef PYTHONPATH
#ifdef HAVE_ENVIRONMENT_OPS
#define PYTHONPATH PREFIX LIBPYTHON sDELIM \
EXEC_PREFIX LIBPYTHON "/lib-dynload"
#else
#define PYTHONPATH LIBPYTHON
#endif
#endif
#ifndef LANDMARK
#define LANDMARK "os.py"
#endif
static char prefix[MAXPATHLEN+1];
static char exec_prefix[MAXPATHLEN+1];
static char progpath[MAXPATHLEN+1];
static char *module_search_path = NULL;
static char lib_python[] = LIBPYTHON;
static char volume_name[32] = { 0 };
/** Determine if "ch" is a separator character.
@param[in] ch The character to test.
@retval TRUE ch is a separator character.
@retval FALSE ch is NOT a separator character.
**/
static int
is_sep(char ch)
{
#ifdef ALTSEP
return ch == SEP || ch == ALTSEP;
#else
return ch == SEP;
#endif
}
/** Reduce a path by its last element.
The last element (everything to the right of the last separator character)
in the path, dir, is removed from the path. Parameter dir is modified in place.
@param[in,out] dir Pointer to the path to modify.
**/
static void
reduce(char *dir)
{
size_t i = strlen(dir);
while (i > 0 && !is_sep(dir[i]))
--i;
dir[i] = '\0';
}
#ifndef UEFI_C_SOURCE
/** Does filename point to a file and not directory?
@param[in] filename The fully qualified path to the object to test.
@retval 0 Filename was not found, or is a directory.
@retval 1 Filename refers to a regular file.
**/
static int
isfile(char *filename)
{
struct stat buf;
if (stat(filename, &buf) != 0) {
return 0;
}
//if (!S_ISREG(buf.st_mode))
if (S_ISDIR(buf.st_mode)) {
return 0;
}
return 1;
}
/** Determine if filename refers to a Python module.
A Python module is indicated if the file exists, or if the file with
'o' or 'c' appended exists.
@param[in] filename The fully qualified path to the object to test.
@retval 0
**/
static int
ismodule(char *filename)
{
if (isfile(filename)) {
//if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: file = \"%s\"\n", __func__, __LINE__, filename);
return 1;
}
/* Check for the compiled version of prefix. */
if (strlen(filename) < MAXPATHLEN) {
strcat(filename, Py_OptimizeFlag ? "o" : "c");
if (isfile(filename)) {
return 1;
}
}
return 0;
}
/** Does filename point to a directory?
@param[in] filename The fully qualified path to the object to test.
@retval 0 Filename was not found, or is not a regular file.
@retval 1 Filename refers to a directory.
**/
static int
isdir(char *filename)
{
struct stat buf;
if (stat(filename, &buf) != 0)
return 0;
if (!S_ISDIR(buf.st_mode))
return 0;
return 1;
}
#endif /* UEFI_C_SOURCE */
/** Determine if a path is absolute, or not.
An absolute path consists of a volume name, "VOL:", followed by a rooted path,
"/path/elements". If both of these components are present, the path is absolute.
Let P be a pointer to the path to test.
Let A be a pointer to the first ':' in P.
Let B be a pointer to the first '/' or '\\' in P.
If A and B are not NULL
If (A-P+1) == (B-P) then the path is absolute.
Otherwise, the path is NOT absolute.
@param[in] path The path to test.
@retval -1 Path is absolute but lacking volume name.
@retval 0 Path is NOT absolute.
@retval 1 Path is absolute.
*/
static int
is_absolute(char *path)
{
char *A;
char *B;
A = strchr(path, ':');
B = strpbrk(path, "/\\");
if(B != NULL) {
if(A == NULL) {
if(B == path) {
return -1;
}
}
else {
if(((A - path) + 1) == (B - path)) {
return 1;
}
}
}
return 0;
}
/** Add a path component, by appending stuff to buffer.
buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a
NUL-terminated string with no more than MAXPATHLEN characters (not counting
the trailing NUL). It's a fatal error if it contains a string longer than
that (callers must be careful!). If these requirements are met, it's
guaranteed that buffer will still be a NUL-terminated string with no more
than MAXPATHLEN characters at exit. If stuff is too long, only as much of
stuff as fits will be appended.
@param[in,out] buffer The path to be extended.
@param[in] stuff The stuff to join onto the path.
*/
static void
joinpath(char *buffer, char *stuff)
{
size_t n, k;
k = 0;
if (is_absolute(stuff) == 1) {
n = 0;
}
else {
n = strlen(buffer);
if(n == 0) {
strncpy(buffer, volume_name, MAXPATHLEN);
n = strlen(buffer);
}
/* We must not use an else clause here because we want to test n again.
volume_name may have been empty.
*/
if (n > 0 && n < MAXPATHLEN) {
if(!is_sep(buffer[n-1])) {
buffer[n++] = SEP;
}
if(is_sep(stuff[0])) ++stuff;
}
}
if (n > MAXPATHLEN)
Py_FatalError("buffer overflow in getpath.c's joinpath()");
k = strlen(stuff);
if (n + k > MAXPATHLEN)
k = MAXPATHLEN - n;
strncpy(buffer+n, stuff, k);
buffer[n+k] = '\0';
}
/** Is filename an executable file?
An executable file:
1) exists
2) is a file, not a directory
3) has a name ending with ".efi"
4) Only has a single '.' in the name.
If basename(filename) does not contain a '.', append ".efi" to filename
If filename ends in ".efi", it is executable, else it isn't.
This routine is used to when searching for the file named by argv[0].
As such, there is no need to search for extensions other than ".efi".
@param[in] filename The name of the file to test. It may, or may not, have an extension.
@retval 0 filename already has a path other than ".efi", or it doesn't exist, or is a directory.
@retval 1 filename refers to an executable file.
**/
static int
isxfile(char *filename)
{
struct stat buf;
char *bn;
char *newbn;
int bnlen;
bn = basename(filename); // Separate off the file name component
reduce(filename); // and isolate the path component
bnlen = strlen(bn);
newbn = strrchr(bn, '.'); // Does basename contain a period?
if(newbn == NULL) { // Does NOT contain a period.
newbn = &bn[bnlen];
strncpyX(newbn, ".efi", MAXPATHLEN - bnlen); // append ".efi" to basename
bnlen += 4;
}
else if(strcmp(newbn, ".efi") != 0) {
return 0; // File can not be executable.
}
joinpath(filename, bn); // Stitch path and file name back together
if (stat(filename, &buf) != 0) { // Now, verify that file exists
return 0;
}
if(S_ISDIR(buf.st_mode)) { // And it is not a directory.
return 0;
}
return 1;
}
/** Copy p into path, ensuring that the result is an absolute path.
copy_absolute requires that path be allocated at least
MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes.
@param[out] path Destination to receive the absolute path.
@param[in] p Path to be tested and possibly converted.
**/
static void
copy_absolute(char *path, char *p)
{
if (is_absolute(p) == 1)
strcpy(path, p);
else {
if (!getcwd(path, MAXPATHLEN)) {
/* unable to get the current directory */
if(volume_name[0] != 0) {
strcpy(path, volume_name);
joinpath(path, p);
}
else
strcpy(path, p);
return;
}
if (p[0] == '.' && is_sep(p[1]))
p += 2;
joinpath(path, p);
}
}
/** Modify path so that the result is an absolute path.
absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes.
@param[in,out] path The path to be made absolute.
*/
static void
absolutize(char *path)
{
char buffer[MAXPATHLEN + 1];
if (is_absolute(path) == 1)
return;
copy_absolute(buffer, path);
strcpy(path, buffer);
}
/** Extract the volume name from a path.
@param[out] Dest Pointer to location in which to store the extracted volume name.
@param[in] path Pointer to the path to extract the volume name from.
**/
static void
set_volume(char *Dest, char *path)
{
size_t VolLen;
if(is_absolute(path)) {
VolLen = strcspn(path, "/\\:");
if((VolLen != 0) && (path[VolLen] == ':')) {
(void) strncpyX(Dest, path, VolLen + 1);
}
}
}
/** Determine paths.
Two directories must be found, the platform independent directory
(prefix), containing the common .py and .pyc files, and the platform
dependent directory (exec_prefix), containing the shared library
modules. Note that prefix and exec_prefix are the same directory
for UEFI installations.
Separate searches are carried out for prefix and exec_prefix.
Each search tries a number of different locations until a ``landmark''
file or directory is found. If no prefix or exec_prefix is found, a
warning message is issued and the preprocessor defined PREFIX and
EXEC_PREFIX are used (even though they may not work); python carries on
as best as is possible, but some imports may fail.
Before any searches are done, the location of the executable is
determined. If argv[0] has one or more slashes in it, it is used
unchanged. Otherwise, it must have been invoked from the shell's path,
so we search %PATH% for the named executable and use that. If the
executable was not found on %PATH% (or there was no %PATH% environment
variable), the original argv[0] string is used.
Finally, argv0_path is set to the directory containing the executable
(i.e. the last component is stripped).
With argv0_path in hand, we perform a number of steps. The same steps
are performed for prefix and for exec_prefix, but with a different
landmark.
The prefix landmark will always be lib/python.VERSION/os.py and the
exec_prefix will always be lib/python.VERSION/dynaload, where VERSION
is Python's version number as defined at the beginning of this file.
First. See if the %PYTHONHOME% environment variable points to the
installed location of the Python libraries. If %PYTHONHOME% is set, then
it points to prefix and exec_prefix. %PYTHONHOME% can be a single
directory, which is used for both, or the prefix and exec_prefix
directories separated by the DELIM character.
Next. Search the directories pointed to by the preprocessor variables
PREFIX and EXEC_PREFIX. These paths are prefixed with the volume name
extracted from argv0_path. The volume names correspond to the UEFI
shell "map" names.
That's it!
Well, almost. Once we have determined prefix and exec_prefix, the
preprocessor variable PYTHONPATH is used to construct a path. Each
relative path on PYTHONPATH is prefixed with prefix. Then the directory
containing the shared library modules is appended. The environment
variable $PYTHONPATH is inserted in front of it all. Finally, the
prefix and exec_prefix globals are tweaked so they reflect the values
expected by other code, by stripping the "lib/python$VERSION/..." stuff
off. This seems to make more sense given that currently the only
known use of sys.prefix and sys.exec_prefix is for the ILU installation
process to find the installed Python tree.
The final, fully resolved, paths should look something like:
fs0:/Efi/Tools/python.efi
fs0:/Efi/StdLib/lib/python27
fs0:/Efi/StdLib/lib/python27/dynaload
**/
static void
calculate_path(void)
{
extern char *Py_GetProgramName(void);
static char delimiter[2] = {DELIM, '\0'};
static char separator[2] = {SEP, '\0'};
char *pythonpath = PYTHONPATH;
char *rtpypath = Py_GETENV("PYTHONPATH");
//char *home = Py_GetPythonHome();
char *path = getenv("PATH");
char *prog = Py_GetProgramName();
char argv0_path[MAXPATHLEN+1];
char zip_path[MAXPATHLEN+1];
char *buf;
size_t bufsz;
size_t prefixsz;
char *defpath;
/* ###########################################################################
Determine path to the Python.efi binary.
Produces progpath, argv0_path, and volume_name.
########################################################################### */
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (strchr(prog, SEP))
strncpy(progpath, prog, MAXPATHLEN);
else if (path) {
while (1) {
char *delim = strchr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN)
len = MAXPATHLEN;
strncpy(progpath, path, len);
*(progpath + len) = '\0';
}
else
strncpy(progpath, path, MAXPATHLEN);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
if ( (!is_absolute(progpath)) && (progpath[0] != '\0') )
absolutize(progpath);
strncpy(argv0_path, progpath, MAXPATHLEN);
argv0_path[MAXPATHLEN] = '\0';
set_volume(volume_name, argv0_path);
reduce(argv0_path);
/* At this point, argv0_path is guaranteed to be less than
MAXPATHLEN bytes long.
*/
/* ###########################################################################
Build the FULL prefix string, including volume name.
This is the full path to the platform independent libraries.
########################################################################### */
strncpy(prefix, volume_name, MAXPATHLEN);
joinpath(prefix, PREFIX);
joinpath(prefix, lib_python);
/* ###########################################################################
Build the FULL path to the zipped-up Python library.
########################################################################### */
strncpy(zip_path, prefix, MAXPATHLEN);
zip_path[MAXPATHLEN] = '\0';
reduce(zip_path);
joinpath(zip_path, "python00.zip");
bufsz = strlen(zip_path); /* Replace "00" with version */
zip_path[bufsz - 6] = VERSION[0];
zip_path[bufsz - 5] = VERSION[1];
/* ###########################################################################
Build the FULL path to dynamically loadable libraries.
########################################################################### */
strncpy(exec_prefix, volume_name, MAXPATHLEN);
joinpath(exec_prefix, EXEC_PREFIX);
joinpath(exec_prefix, lib_python);
joinpath(exec_prefix, "lib-dynload");
/* ###########################################################################
Build the module search path.
########################################################################### */
/* Reduce prefix and exec_prefix to their essence,
* e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
* If we're loading relative to the build directory,
* return the compiled-in defaults instead.
*/
reduce(prefix);
reduce(prefix);
/* The prefix is the root directory, but reduce() chopped
* off the "/". */
if (!prefix[0]) {
strcpy(prefix, volume_name);
}
bufsz = strlen(prefix);
if(prefix[bufsz-1] == ':') {
prefix[bufsz] = SEP;
prefix[bufsz+1] = 0;
}
/* Calculate size of return buffer.
*/
defpath = pythonpath;
bufsz = 0;
if (rtpypath)
bufsz += strlen(rtpypath) + 1;
prefixsz = strlen(prefix) + 1;
while (1) {
char *delim = strchr(defpath, DELIM);
if (is_absolute(defpath) == 0)
/* Paths are relative to prefix */
bufsz += prefixsz;
if (delim)
bufsz += delim - defpath + 1;
else {
bufsz += strlen(defpath) + 1;
break;
}
defpath = delim + 1;
}
bufsz += strlen(zip_path) + 1;
bufsz += strlen(exec_prefix) + 1;
/* This is the only malloc call in this file */
buf = (char *)PyMem_Malloc(bufsz);
if (buf == NULL) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = PYTHONPATH;
}
else {
/* Run-time value of $PYTHONPATH goes first */
if (rtpypath) {
strcpy(buf, rtpypath);
strcat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next is the default zip path */
strcat(buf, zip_path);
strcat(buf, delimiter);
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.
*/
defpath = pythonpath;
while (1) {
char *delim = strchr(defpath, DELIM);
if (is_absolute(defpath) != 1) {
strcat(buf, prefix);
strcat(buf, separator);
}
if (delim) {
size_t len = delim - defpath + 1;
size_t end = strlen(buf) + len;
strncat(buf, defpath, len);
*(buf + end) = '\0';
}
else {
strcat(buf, defpath);
break;
}
defpath = delim + 1;
}
strcat(buf, delimiter);
/* Finally, on goes the directory for dynamic-load modules */
strcat(buf, exec_prefix);
/* And publish the results */
module_search_path = buf;
}
/* At this point, exec_prefix is set to VOL:/Efi/StdLib/lib/python.27/dynalib.
We want to get back to the root value, so we have to remove the final three
segments to get VOL:/Efi/StdLib. Because we don't know what VOL is, and
EXEC_PREFIX is also indeterminate, we just remove the three final segments.
*/
reduce(exec_prefix);
reduce(exec_prefix);
reduce(exec_prefix);
if (!exec_prefix[0]) {
strcpy(exec_prefix, volume_name);
}
bufsz = strlen(exec_prefix);
if(exec_prefix[bufsz-1] == ':') {
exec_prefix[bufsz] = SEP;
exec_prefix[bufsz+1] = 0;
}
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: module_search_path = \"%s\"\n", __func__, __LINE__, module_search_path);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: prefix = \"%s\"\n", __func__, __LINE__, prefix);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: exec_prefix = \"%s\"\n", __func__, __LINE__, exec_prefix);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: progpath = \"%s\"\n", __func__, __LINE__, progpath);
}
/* External interface */
char *
Py_GetPath(void)
{
if (!module_search_path)
calculate_path();
return module_search_path;
}
char *
Py_GetPrefix(void)
{
if (!module_search_path)
calculate_path();
return prefix;
}
char *
Py_GetExecPrefix(void)
{
if (!module_search_path)
calculate_path();
return exec_prefix;
}
char *
Py_GetProgramFullPath(void)
{
if (!module_search_path)
calculate_path();
return progpath;
}
#ifdef __cplusplus
}
#endif

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/** @file
File object interface.
Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
/* File object interface */
#ifndef Py_FILEOBJECT_H
#define Py_FILEOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
PyObject_HEAD
FILE *f_fp;
PyObject *f_name;
PyObject *f_mode;
int (*f_close)(FILE *);
int f_softspace; /* Flag used by 'print' command */
int f_binary; /* Flag which indicates whether the file is
open in binary (1) or text (0) mode */
char* f_buf; /* Allocated readahead buffer */
char* f_bufend; /* Points after last occupied position */
char* f_bufptr; /* Current buffer position */
char *f_setbuf; /* Buffer for setbuf(3) and setvbuf(3) */
int f_univ_newline; /* Handle any newline convention */
int f_newlinetypes; /* Types of newlines seen */
int f_skipnextlf; /* Skip next \n */
PyObject *f_encoding;
PyObject *f_errors;
PyObject *weakreflist; /* List of weak references */
int unlocked_count; /* Num. currently running sections of code
using f_fp with the GIL released. */
int readable;
int writable;
} PyFileObject;
PyAPI_DATA(PyTypeObject) PyFile_Type;
#define PyFile_Check(op) PyObject_TypeCheck(op, &PyFile_Type)
#define PyFile_CheckExact(op) (Py_TYPE(op) == &PyFile_Type)
PyAPI_FUNC(PyObject *) PyFile_FromString(char *, char *);
PyAPI_FUNC(void) PyFile_SetBufSize(PyObject *, int);
PyAPI_FUNC(int) PyFile_SetEncoding(PyObject *, const char *);
PyAPI_FUNC(int) PyFile_SetEncodingAndErrors(PyObject *, const char *, char *errors);
PyAPI_FUNC(PyObject *) PyFile_FromFile(FILE *, char *, char *,
int (*)(FILE *));
PyAPI_FUNC(FILE *) PyFile_AsFile(PyObject *);
PyAPI_FUNC(void) PyFile_IncUseCount(PyFileObject *);
PyAPI_FUNC(void) PyFile_DecUseCount(PyFileObject *);
PyAPI_FUNC(PyObject *) PyFile_Name(PyObject *);
PyAPI_FUNC(PyObject *) PyFile_GetLine(PyObject *, int);
PyAPI_FUNC(int) PyFile_WriteObject(PyObject *, PyObject *, int);
PyAPI_FUNC(int) PyFile_SoftSpace(PyObject *, int);
PyAPI_FUNC(int) PyFile_WriteString(const char *, PyObject *);
PyAPI_FUNC(int) PyObject_AsFileDescriptor(PyObject *);
/* The default encoding used by the platform file system APIs
If non-NULL, this is different than the default encoding for strings
*/
PyAPI_DATA(const char *) Py_FileSystemDefaultEncoding;
/* Routines to replace fread() and fgets() which accept any of \r, \n
or \r\n as line terminators.
*/
#define PY_STDIOTEXTMODE "b"
char *Py_UniversalNewlineFgets(char *, int, FILE*, PyObject *);
size_t Py_UniversalNewlineFread(char *, size_t, FILE *, PyObject *);
/* A routine to do sanity checking on the file mode string. returns
non-zero on if an exception occurred
*/
int _PyFile_SanitizeMode(char *mode);
//#if defined _MSC_VER && _MSC_VER >= 1400
/* A routine to check if a file descriptor is valid on Windows. Returns 0
* and sets errno to EBADF if it isn't. This is to avoid Assertions
* from various functions in the Windows CRT beginning with
* Visual Studio 2005
*/
//int _PyVerify_fd(int fd);
//#elif defined _MSC_VER && _MSC_VER >= 1200
/* fdopen doesn't set errno EBADF and crashes for large fd on debug build */
//#define _PyVerify_fd(fd) (_get_osfhandle(fd) >= 0)
//#else
#define _PyVerify_fd(A) (1) /* dummy */
//#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_FILEOBJECT_H */

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/** @file
Operating system dependencies.
Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef Py_OSDEFS_H
#define Py_OSDEFS_H
#ifdef __cplusplus
extern "C" {
#endif
/* Mod by chrish: QNX has WATCOM, but isn't DOS */
#if !defined(__QNX__) && !defined(UEFI_C_SOURCE)
#if defined(MS_WINDOWS) || defined(__BORLANDC__) || defined(__WATCOMC__) || defined(__DJGPP__) || defined(PYOS_OS2)
#if defined(PYOS_OS2) && defined(PYCC_GCC)
#define MAXPATHLEN 260
#define SEP '/'
#define ALTSEP '\\'
#else
#define SEP '\\'
#define ALTSEP '/'
#define MAXPATHLEN 256
#endif
#define DELIM ';'
#endif
#endif
#ifdef RISCOS
#define SEP '.'
#define MAXPATHLEN 256
#define DELIM ','
#endif
/* Filename separator */
#ifndef SEP
#define SEP '/'
#define ALTSEP '\\'
#endif
/* Max pathname length */
#ifndef MAXPATHLEN
#if defined(PATH_MAX) && PATH_MAX > 1024
#define MAXPATHLEN PATH_MAX
#else
#define MAXPATHLEN 1024
#endif
#endif
/* Search path entry delimiter */
#ifndef DELIM
#ifdef UEFI_C_SOURCE
#define DELIM ';'
#define DELIM_STR ";"
#else
#define DELIM ':'
#endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_OSDEFS_H */

View File

@ -0,0 +1,918 @@
/** @file
Symbols and macros to supply platform-independent interfaces to basic
C language & library operations whose spellings vary across platforms.
Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef Py_PYPORT_H
#define Py_PYPORT_H
#include "pyconfig.h" /* include for defines */
/* Some versions of HP-UX & Solaris need inttypes.h for int32_t,
INT32_MAX, etc. */
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
/**************************************************************************
Symbols and macros to supply platform-independent interfaces to basic
C language & library operations whose spellings vary across platforms.
Please try to make documentation here as clear as possible: by definition,
the stuff here is trying to illuminate C's darkest corners.
Config #defines referenced here:
SIGNED_RIGHT_SHIFT_ZERO_FILLS
Meaning: To be defined iff i>>j does not extend the sign bit when i is a
signed integral type and i < 0.
Used in: Py_ARITHMETIC_RIGHT_SHIFT
Py_DEBUG
Meaning: Extra checks compiled in for debug mode.
Used in: Py_SAFE_DOWNCAST
HAVE_UINTPTR_T
Meaning: The C9X type uintptr_t is supported by the compiler
Used in: Py_uintptr_t
HAVE_LONG_LONG
Meaning: The compiler supports the C type "long long"
Used in: PY_LONG_LONG
**************************************************************************/
/* For backward compatibility only. Obsolete, do not use. */
#ifdef HAVE_PROTOTYPES
#define Py_PROTO(x) x
#else
#define Py_PROTO(x) ()
#endif
#ifndef Py_FPROTO
#define Py_FPROTO(x) Py_PROTO(x)
#endif
/* typedefs for some C9X-defined synonyms for integral types.
*
* The names in Python are exactly the same as the C9X names, except with a
* Py_ prefix. Until C9X is universally implemented, this is the only way
* to ensure that Python gets reliable names that don't conflict with names
* in non-Python code that are playing their own tricks to define the C9X
* names.
*
* NOTE: don't go nuts here! Python has no use for *most* of the C9X
* integral synonyms. Only define the ones we actually need.
*/
#ifdef HAVE_LONG_LONG
#ifndef PY_LONG_LONG
#define PY_LONG_LONG long long
#if defined(LLONG_MAX)
/* If LLONG_MAX is defined in limits.h, use that. */
#define PY_LLONG_MIN LLONG_MIN
#define PY_LLONG_MAX LLONG_MAX
#define PY_ULLONG_MAX ULLONG_MAX
#elif defined(__LONG_LONG_MAX__)
/* Otherwise, if GCC has a builtin define, use that. */
#define PY_LLONG_MAX __LONG_LONG_MAX__
#define PY_LLONG_MIN (-PY_LLONG_MAX-1)
#define PY_ULLONG_MAX (__LONG_LONG_MAX__*2ULL + 1ULL)
#else
/* Otherwise, rely on two's complement. */
#define PY_ULLONG_MAX (~0ULL)
#define PY_LLONG_MAX ((long long)(PY_ULLONG_MAX>>1))
#define PY_LLONG_MIN (-PY_LLONG_MAX-1)
#endif /* LLONG_MAX */
#endif
#endif /* HAVE_LONG_LONG */
/* a build with 30-bit digits for Python long integers needs an exact-width
* 32-bit unsigned integer type to store those digits. (We could just use
* type 'unsigned long', but that would be wasteful on a system where longs
* are 64-bits.) On Unix systems, the autoconf macro AC_TYPE_UINT32_T defines
* uint32_t to be such a type unless stdint.h or inttypes.h defines uint32_t.
* However, it doesn't set HAVE_UINT32_T, so we do that here.
*/
#if (defined UINT32_MAX || defined uint32_t)
#ifndef PY_UINT32_T
#define HAVE_UINT32_T 1
#define PY_UINT32_T uint32_t
#endif
#endif
/* Macros for a 64-bit unsigned integer type; used for type 'twodigits' in the
* long integer implementation, when 30-bit digits are enabled.
*/
#if (defined UINT64_MAX || defined uint64_t)
#ifndef PY_UINT64_T
#define HAVE_UINT64_T 1
#define PY_UINT64_T uint64_t
#endif
#endif
/* Signed variants of the above */
#if (defined INT32_MAX || defined int32_t)
#ifndef PY_INT32_T
#define HAVE_INT32_T 1
#define PY_INT32_T int32_t
#endif
#endif
#if (defined INT64_MAX || defined int64_t)
#ifndef PY_INT64_T
#define HAVE_INT64_T 1
#define PY_INT64_T int64_t
#endif
#endif
/* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all
the necessary integer types are available, and we're on a 64-bit platform
(as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. */
#ifndef PYLONG_BITS_IN_DIGIT
#if (defined HAVE_UINT64_T && defined HAVE_INT64_T && \
defined HAVE_UINT32_T && defined HAVE_INT32_T && SIZEOF_VOID_P >= 8)
#define PYLONG_BITS_IN_DIGIT 30
#else
#define PYLONG_BITS_IN_DIGIT 15
#endif
#endif
/* uintptr_t is the C9X name for an unsigned integral type such that a
* legitimate void* can be cast to uintptr_t and then back to void* again
* without loss of information. Similarly for intptr_t, wrt a signed
* integral type.
*/
#ifdef HAVE_UINTPTR_T
typedef uintptr_t Py_uintptr_t;
typedef intptr_t Py_intptr_t;
#elif SIZEOF_VOID_P <= SIZEOF_INT
typedef unsigned int Py_uintptr_t;
typedef int Py_intptr_t;
#elif SIZEOF_VOID_P <= SIZEOF_LONG
typedef unsigned long Py_uintptr_t;
typedef long Py_intptr_t;
#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG)
typedef unsigned PY_LONG_LONG Py_uintptr_t;
typedef PY_LONG_LONG Py_intptr_t;
#else
# error "Python needs a typedef for Py_uintptr_t in pyport.h."
#endif /* HAVE_UINTPTR_T */
/* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) ==
* sizeof(size_t). C99 doesn't define such a thing directly (size_t is an
* unsigned integral type). See PEP 353 for details.
*/
#ifdef HAVE_SSIZE_T
typedef ssize_t Py_ssize_t;
#elif SIZEOF_VOID_P == SIZEOF_SIZE_T
typedef Py_intptr_t Py_ssize_t;
#else
# error "Python needs a typedef for Py_ssize_t in pyport.h."
#endif
/* Largest possible value of size_t.
SIZE_MAX is part of C99, so it might be defined on some
platforms. If it is not defined, (size_t)-1 is a portable
definition for C89, due to the way signed->unsigned
conversion is defined. */
#ifdef SIZE_MAX
#define PY_SIZE_MAX SIZE_MAX
#else
#define PY_SIZE_MAX ((size_t)-1)
#endif
/* Largest positive value of type Py_ssize_t. */
#define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1))
/* Smallest negative value of type Py_ssize_t. */
#define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1)
#if SIZEOF_PID_T > SIZEOF_LONG
# error "Python doesn't support sizeof(pid_t) > sizeof(long)"
#endif
/* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf
* format to convert an argument with the width of a size_t or Py_ssize_t.
* C99 introduced "z" for this purpose, but not all platforms support that;
* e.g., MS compilers use "I" instead.
*
* These "high level" Python format functions interpret "z" correctly on
* all platforms (Python interprets the format string itself, and does whatever
* the platform C requires to convert a size_t/Py_ssize_t argument):
*
* PyString_FromFormat
* PyErr_Format
* PyString_FromFormatV
*
* Lower-level uses require that you interpolate the correct format modifier
* yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for
* example,
*
* Py_ssize_t index;
* fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index);
*
* That will expand to %ld, or %Id, or to something else correct for a
* Py_ssize_t on the platform.
*/
#ifndef PY_FORMAT_SIZE_T
# if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__)
# define PY_FORMAT_SIZE_T ""
# elif SIZEOF_SIZE_T == SIZEOF_LONG
# define PY_FORMAT_SIZE_T "l"
# elif defined(MS_WINDOWS)
# define PY_FORMAT_SIZE_T "I"
# else
# error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T"
# endif
#endif
/* PY_FORMAT_LONG_LONG is analogous to PY_FORMAT_SIZE_T above, but for
* the long long type instead of the size_t type. It's only available
* when HAVE_LONG_LONG is defined. The "high level" Python format
* functions listed above will interpret "lld" or "llu" correctly on
* all platforms.
*/
#ifdef HAVE_LONG_LONG
# ifndef PY_FORMAT_LONG_LONG
# if defined(MS_WIN64) || defined(MS_WINDOWS)
# define PY_FORMAT_LONG_LONG "I64"
# else
# error "This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG"
# endif
# endif
#endif
/* Py_LOCAL can be used instead of static to get the fastest possible calling
* convention for functions that are local to a given module.
*
* Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining,
* for platforms that support that.
*
* If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more
* "aggressive" inlining/optimizaion is enabled for the entire module. This
* may lead to code bloat, and may slow things down for those reasons. It may
* also lead to errors, if the code relies on pointer aliasing. Use with
* care.
*
* NOTE: You can only use this for functions that are entirely local to a
* module; functions that are exported via method tables, callbacks, etc,
* should keep using static.
*/
#undef USE_INLINE /* XXX - set via configure? */
#if defined(_MSC_VER)
#if defined(PY_LOCAL_AGGRESSIVE)
/* enable more aggressive optimization for visual studio */
//#pragma optimize("agtw", on)
#pragma optimize("gt", on) // a and w are not legal for VS2005
#endif
/* ignore warnings if the compiler decides not to inline a function */
#pragma warning(disable: 4710)
/* fastest possible local call under MSVC */
#define Py_LOCAL(type) static type __fastcall
#define Py_LOCAL_INLINE(type) static __inline type __fastcall
#elif defined(USE_INLINE)
#define Py_LOCAL(type) static type
#define Py_LOCAL_INLINE(type) static inline type
#else
#define Py_LOCAL(type) static type
#define Py_LOCAL_INLINE(type) static type
#endif
/* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks
* are often very short. While most platforms have highly optimized code for
* large transfers, the setup costs for memcpy are often quite high. MEMCPY
* solves this by doing short copies "in line".
*/
#if defined(_MSC_VER)
#define Py_MEMCPY(target, source, length) do { \
size_t i_, n_ = (length); \
char *t_ = (void*) (target); \
const char *s_ = (void*) (source); \
if (n_ >= 16) \
memcpy(t_, s_, n_); \
else \
for (i_ = 0; i_ < n_; i_++) \
t_[i_] = s_[i_]; \
} while (0)
#else
#define Py_MEMCPY memcpy
#endif
#include <stdlib.h>
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h> /* needed for 'finite' declaration on some platforms */
#endif
#include <math.h> /* Moved here from the math section, before extern "C" */
/********************************************
* WRAPPER FOR <time.h> and/or <sys/time.h> *
********************************************/
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else /* !TIME_WITH_SYS_TIME */
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else /* !HAVE_SYS_TIME_H */
#include <time.h>
#endif /* !HAVE_SYS_TIME_H */
#endif /* !TIME_WITH_SYS_TIME */
/******************************
* WRAPPER FOR <sys/select.h> *
******************************/
/* NB caller must include <sys/types.h> */
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* !HAVE_SYS_SELECT_H */
/*******************************
* stat() and fstat() fiddling *
*******************************/
/* We expect that stat and fstat exist on most systems.
* It's confirmed on Unix, Mac and Windows.
* If you don't have them, add
* #define DONT_HAVE_STAT
* and/or
* #define DONT_HAVE_FSTAT
* to your pyconfig.h. Python code beyond this should check HAVE_STAT and
* HAVE_FSTAT instead.
* Also
* #define HAVE_SYS_STAT_H
* if <sys/stat.h> exists on your platform, and
* #define HAVE_STAT_H
* if <stat.h> does.
*/
#ifndef DONT_HAVE_STAT
#define HAVE_STAT
#endif
#ifndef DONT_HAVE_FSTAT
#define HAVE_FSTAT
#endif
#ifdef RISCOS
#include <sys/types.h>
#include "unixstuff.h"
#endif
#ifdef HAVE_SYS_STAT_H
#if defined(PYOS_OS2) && defined(PYCC_GCC)
#include <sys/types.h>
#endif
#include <sys/stat.h>
#elif defined(HAVE_STAT_H)
#include <stat.h>
#endif
#if defined(PYCC_VACPP)
/* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */
#define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG)
#endif
#ifndef S_ISREG
#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
#endif
#ifndef S_ISDIR
#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
#endif
#ifdef __cplusplus
/* Move this down here since some C++ #include's don't like to be included
inside an extern "C" */
extern "C" {
#endif
/* Py_ARITHMETIC_RIGHT_SHIFT
* C doesn't define whether a right-shift of a signed integer sign-extends
* or zero-fills. Here a macro to force sign extension:
* Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J)
* Return I >> J, forcing sign extension. Arithmetically, return the
* floor of I/2**J.
* Requirements:
* I should have signed integer type. In the terminology of C99, this can
* be either one of the five standard signed integer types (signed char,
* short, int, long, long long) or an extended signed integer type.
* J is an integer >= 0 and strictly less than the number of bits in the
* type of I (because C doesn't define what happens for J outside that
* range either).
* TYPE used to specify the type of I, but is now ignored. It's been left
* in for backwards compatibility with versions <= 2.6 or 3.0.
* Caution:
* I may be evaluated more than once.
*/
#ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS
#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \
((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J))
#else
#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J))
#endif
/* Py_FORCE_EXPANSION(X)
* "Simply" returns its argument. However, macro expansions within the
* argument are evaluated. This unfortunate trickery is needed to get
* token-pasting to work as desired in some cases.
*/
#define Py_FORCE_EXPANSION(X) X
/* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW)
* Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this
* assert-fails if any information is lost.
* Caution:
* VALUE may be evaluated more than once.
*/
#ifdef Py_DEBUG
#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \
(assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE))
#else
#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE)
#endif
/* Py_SET_ERRNO_ON_MATH_ERROR(x)
* If a libm function did not set errno, but it looks like the result
* overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno
* to 0 before calling a libm function, and invoke this macro after,
* passing the function result.
* Caution:
* This isn't reliable. See Py_OVERFLOWED comments.
* X is evaluated more than once.
*/
#if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64))
#define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM;
#else
#define _Py_SET_EDOM_FOR_NAN(X) ;
#endif
#define Py_SET_ERRNO_ON_MATH_ERROR(X) \
do { \
if (errno == 0) { \
if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \
errno = ERANGE; \
else _Py_SET_EDOM_FOR_NAN(X) \
} \
} while(0)
/* Py_SET_ERANGE_ON_OVERFLOW(x)
* An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility.
*/
#define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X)
/* Py_ADJUST_ERANGE1(x)
* Py_ADJUST_ERANGE2(x, y)
* Set errno to 0 before calling a libm function, and invoke one of these
* macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful
* for functions returning complex results). This makes two kinds of
* adjustments to errno: (A) If it looks like the platform libm set
* errno=ERANGE due to underflow, clear errno. (B) If it looks like the
* platform libm overflowed but didn't set errno, force errno to ERANGE. In
* effect, we're trying to force a useful implementation of C89 errno
* behavior.
* Caution:
* This isn't reliable. See Py_OVERFLOWED comments.
* X and Y may be evaluated more than once.
*/
#define Py_ADJUST_ERANGE1(X) \
do { \
if (errno == 0) { \
if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \
errno = ERANGE; \
} \
else if (errno == ERANGE && (X) == 0.0) \
errno = 0; \
} while(0)
#define Py_ADJUST_ERANGE2(X, Y) \
do { \
if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL || \
(Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) { \
if (errno == 0) \
errno = ERANGE; \
} \
else if (errno == ERANGE) \
errno = 0; \
} while(0)
/* The functions _Py_dg_strtod and _Py_dg_dtoa in Python/dtoa.c (which are
* required to support the short float repr introduced in Python 3.1) require
* that the floating-point unit that's being used for arithmetic operations
* on C doubles is set to use 53-bit precision. It also requires that the
* FPU rounding mode is round-half-to-even, but that's less often an issue.
*
* If your FPU isn't already set to 53-bit precision/round-half-to-even, and
* you want to make use of _Py_dg_strtod and _Py_dg_dtoa, then you should
*
* #define HAVE_PY_SET_53BIT_PRECISION 1
*
* and also give appropriate definitions for the following three macros:
*
* _PY_SET_53BIT_PRECISION_START : store original FPU settings, and
* set FPU to 53-bit precision/round-half-to-even
* _PY_SET_53BIT_PRECISION_END : restore original FPU settings
* _PY_SET_53BIT_PRECISION_HEADER : any variable declarations needed to
* use the two macros above.
*
* The macros are designed to be used within a single C function: see
* Python/pystrtod.c for an example of their use.
*/
/* get and set x87 control word for gcc/x86 */
#ifdef HAVE_GCC_ASM_FOR_X87
#define HAVE_PY_SET_53BIT_PRECISION 1
/* _Py_get/set_387controlword functions are defined in Python/pymath.c */
#define _Py_SET_53BIT_PRECISION_HEADER \
unsigned short old_387controlword, new_387controlword
#define _Py_SET_53BIT_PRECISION_START \
do { \
old_387controlword = _Py_get_387controlword(); \
new_387controlword = (old_387controlword & ~0x0f00) | 0x0200; \
if (new_387controlword != old_387controlword) \
_Py_set_387controlword(new_387controlword); \
} while (0)
#define _Py_SET_53BIT_PRECISION_END \
if (new_387controlword != old_387controlword) \
_Py_set_387controlword(old_387controlword)
#endif
/* default definitions are empty */
#ifndef HAVE_PY_SET_53BIT_PRECISION
#define _Py_SET_53BIT_PRECISION_HEADER
#define _Py_SET_53BIT_PRECISION_START
#define _Py_SET_53BIT_PRECISION_END
#endif
/* If we can't guarantee 53-bit precision, don't use the code
in Python/dtoa.c, but fall back to standard code. This
means that repr of a float will be long (17 sig digits).
Realistically, there are two things that could go wrong:
(1) doubles aren't IEEE 754 doubles, or
(2) we're on x86 with the rounding precision set to 64-bits
(extended precision), and we don't know how to change
the rounding precision.
*/
#if !defined(DOUBLE_IS_LITTLE_ENDIAN_IEEE754) && \
!defined(DOUBLE_IS_BIG_ENDIAN_IEEE754) && \
!defined(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754)
#define PY_NO_SHORT_FLOAT_REPR
#endif
/* double rounding is symptomatic of use of extended precision on x86. If
we're seeing double rounding, and we don't have any mechanism available for
changing the FPU rounding precision, then don't use Python/dtoa.c. */
#if defined(X87_DOUBLE_ROUNDING) && !defined(HAVE_PY_SET_53BIT_PRECISION)
#define PY_NO_SHORT_FLOAT_REPR
#endif
/* Py_DEPRECATED(version)
* Declare a variable, type, or function deprecated.
* Usage:
* extern int old_var Py_DEPRECATED(2.3);
* typedef int T1 Py_DEPRECATED(2.4);
* extern int x() Py_DEPRECATED(2.5);
*/
#if defined(__GNUC__) && ((__GNUC__ >= 4) || \
(__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))
#define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))
#else
#define Py_DEPRECATED(VERSION_UNUSED)
#endif
/**************************************************************************
Prototypes that are missing from the standard include files on some systems
(and possibly only some versions of such systems.)
Please be conservative with adding new ones, document them and enclose them
in platform-specific #ifdefs.
**************************************************************************/
#ifdef SOLARIS
/* Unchecked */
extern int gethostname(char *, int);
#endif
#ifdef __BEOS__
/* Unchecked */
/* It's in the libs, but not the headers... - [cjh] */
int shutdown( int, int );
#endif
#ifdef HAVE__GETPTY
#include <sys/types.h> /* we need to import mode_t */
extern char * _getpty(int *, int, mode_t, int);
#endif
/* On QNX 6, struct termio must be declared by including sys/termio.h
if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must
be included before termios.h or it will generate an error. */
#ifdef HAVE_SYS_TERMIO_H
#include <sys/termio.h>
#endif
#if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY)
#if !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) && !defined(HAVE_UTIL_H)
/* BSDI does not supply a prototype for the 'openpty' and 'forkpty'
functions, even though they are included in libutil. */
#include <termios.h>
extern int openpty(int *, int *, char *, struct termios *, struct winsize *);
extern pid_t forkpty(int *, char *, struct termios *, struct winsize *);
#endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */
#endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */
/* These are pulled from various places. It isn't obvious on what platforms
they are necessary, nor what the exact prototype should look like (which
is likely to vary between platforms!) If you find you need one of these
declarations, please move them to a platform-specific block and include
proper prototypes. */
#if 0
/* From Modules/resource.c */
extern int getrusage();
extern int getpagesize();
/* From Python/sysmodule.c and Modules/posixmodule.c */
extern int fclose(FILE *);
/* From Modules/posixmodule.c */
extern int fdatasync(int);
#endif /* 0 */
/* On 4.4BSD-descendants, ctype functions serves the whole range of
* wchar_t character set rather than single byte code points only.
* This characteristic can break some operations of string object
* including str.upper() and str.split() on UTF-8 locales. This
* workaround was provided by Tim Robbins of FreeBSD project.
*/
#ifdef __FreeBSD__
#include <osreldate.h>
#if __FreeBSD_version > 500039
# define _PY_PORT_CTYPE_UTF8_ISSUE
#endif
#endif
#if defined(__APPLE__)
# define _PY_PORT_CTYPE_UTF8_ISSUE
#endif
#ifdef _PY_PORT_CTYPE_UTF8_ISSUE
#include <ctype.h>
#include <wctype.h>
#undef isalnum
#define isalnum(c) iswalnum(btowc(c))
#undef isalpha
#define isalpha(c) iswalpha(btowc(c))
#undef islower
#define islower(c) iswlower(btowc(c))
#undef isspace
#define isspace(c) iswspace(btowc(c))
#undef isupper
#define isupper(c) iswupper(btowc(c))
#undef tolower
#define tolower(c) towlower(btowc(c))
#undef toupper
#define toupper(c) towupper(btowc(c))
#endif
/* Declarations for symbol visibility.
PyAPI_FUNC(type): Declares a public Python API function and return type
PyAPI_DATA(type): Declares public Python data and its type
PyMODINIT_FUNC: A Python module init function. If these functions are
inside the Python core, they are private to the core.
If in an extension module, it may be declared with
external linkage depending on the platform.
As a number of platforms support/require "__declspec(dllimport/dllexport)",
we support a HAVE_DECLSPEC_DLL macro to save duplication.
*/
/*
All windows ports, except cygwin, are handled in PC/pyconfig.h.
BeOS and cygwin are the only other autoconf platform requiring special
linkage handling and both of these use __declspec().
*/
#if defined(__CYGWIN__) || defined(__BEOS__)
# define HAVE_DECLSPEC_DLL
#endif
/* only get special linkage if built as shared or platform is Cygwin */
#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
# if defined(HAVE_DECLSPEC_DLL)
# ifdef Py_BUILD_CORE
# define PyAPI_FUNC(RTYPE) __declspec(dllexport) RTYPE
# define PyAPI_DATA(RTYPE) extern __declspec(dllexport) RTYPE
/* module init functions inside the core need no external linkage */
/* except for Cygwin to handle embedding (FIXME: BeOS too?) */
# if defined(__CYGWIN__)
# define PyMODINIT_FUNC __declspec(dllexport) void
# else /* __CYGWIN__ */
# define PyMODINIT_FUNC void
# endif /* __CYGWIN__ */
# else /* Py_BUILD_CORE */
/* Building an extension module, or an embedded situation */
/* public Python functions and data are imported */
/* Under Cygwin, auto-import functions to prevent compilation */
/* failures similar to those described at the bottom of 4.1: */
/* http://docs.python.org/extending/windows.html#a-cookbook-approach */
# if !defined(__CYGWIN__)
# define PyAPI_FUNC(RTYPE) __declspec(dllimport) RTYPE
# endif /* !__CYGWIN__ */
# define PyAPI_DATA(RTYPE) extern __declspec(dllimport) RTYPE
/* module init functions outside the core must be exported */
# if defined(__cplusplus)
# define PyMODINIT_FUNC extern "C" __declspec(dllexport) void
# else /* __cplusplus */
# define PyMODINIT_FUNC __declspec(dllexport) void
# endif /* __cplusplus */
# endif /* Py_BUILD_CORE */
# endif /* HAVE_DECLSPEC */
#endif /* Py_ENABLE_SHARED */
/* If no external linkage macros defined by now, create defaults */
#ifndef PyAPI_FUNC
# define PyAPI_FUNC(RTYPE) RTYPE
#endif
#ifndef PyAPI_DATA
# define PyAPI_DATA(RTYPE) extern RTYPE
#endif
#ifndef PyMODINIT_FUNC
# if defined(__cplusplus)
# define PyMODINIT_FUNC extern "C" void
# else /* __cplusplus */
# define PyMODINIT_FUNC void
# endif /* __cplusplus */
#endif
/* Deprecated DL_IMPORT and DL_EXPORT macros */
#if defined(Py_ENABLE_SHARED) && defined (HAVE_DECLSPEC_DLL)
# if defined(Py_BUILD_CORE)
# define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE
# define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
# else
# define DL_IMPORT(RTYPE) __declspec(dllimport) RTYPE
# define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
# endif
#endif
#ifndef DL_EXPORT
# define DL_EXPORT(RTYPE) RTYPE
#endif
#ifndef DL_IMPORT
# define DL_IMPORT(RTYPE) RTYPE
#endif
/* End of deprecated DL_* macros */
/* If the fd manipulation macros aren't defined,
here is a set that should do the job */
#if 0 /* disabled and probably obsolete */
#ifndef FD_SETSIZE
#define FD_SETSIZE 256
#endif
#ifndef FD_SET
typedef long fd_mask;
#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif /* howmany */
typedef struct fd_set {
fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
} fd_set;
#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
#endif /* FD_SET */
#endif /* fd manipulation macros */
/* limits.h constants that may be missing */
#ifndef INT_MAX
#define INT_MAX 2147483647
#endif
#ifndef LONG_MAX
#if SIZEOF_LONG == 4
#define LONG_MAX 0X7FFFFFFFL
#elif SIZEOF_LONG == 8
#define LONG_MAX 0X7FFFFFFFFFFFFFFFL
#else
#error "could not set LONG_MAX in pyport.h"
#endif
#endif
#ifndef LONG_MIN
#define LONG_MIN (-LONG_MAX-1)
#endif
#ifndef LONG_BIT
#define LONG_BIT (8 * SIZEOF_LONG)
#endif
#if LONG_BIT != 8 * SIZEOF_LONG
/* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some recent
* 32-bit platforms using gcc. We try to catch that here at compile-time
* rather than waiting for integer multiplication to trigger bogus
* overflows.
*/
#error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
#endif
#ifdef __cplusplus
}
#endif
/*
* Hide GCC attributes from compilers that don't support them.
*/
#if (!defined(__GNUC__) || __GNUC__ < 2 || \
(__GNUC__ == 2 && __GNUC_MINOR__ < 7) ) && \
!defined(RISCOS)
#define Py_GCC_ATTRIBUTE(x)
#else
#define Py_GCC_ATTRIBUTE(x) __attribute__(x)
#endif
/*
* Add PyArg_ParseTuple format where available.
*/
#ifdef HAVE_ATTRIBUTE_FORMAT_PARSETUPLE
#define Py_FORMAT_PARSETUPLE(func,p1,p2) __attribute__((format(func,p1,p2)))
#else
#define Py_FORMAT_PARSETUPLE(func,p1,p2)
#endif
/*
* Specify alignment on compilers that support it.
*/
#if defined(__GNUC__) && __GNUC__ >= 3
#define Py_ALIGNED(x) __attribute__((aligned(x)))
#else
#define Py_ALIGNED(x)
#endif
/* Eliminate end-of-loop code not reached warnings from SunPro C
* when using do{...}while(0) macros
*/
#ifdef __SUNPRO_C
#pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED)
#endif
/*
* Older Microsoft compilers don't support the C99 long long literal suffixes,
* so these will be defined in PC/pyconfig.h for those compilers.
*/
#ifndef Py_LL
#define Py_LL(x) x##LL
#endif
#ifndef Py_ULL
#define Py_ULL(x) Py_LL(x##U)
#endif
#endif /* Py_PYPORT_H */

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@ -0,0 +1,528 @@
# Module 'ntpath' -- common operations on WinNT/Win95 pathnames
"""Common pathname manipulations, WindowsNT/95 version.
Instead of importing this module directly, import os and refer to this
module as os.path.
"""
import os
import sys
import stat
import genericpath
import warnings
from genericpath import *
__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
"basename","dirname","commonprefix","getsize","getmtime",
"getatime","getctime", "islink","exists","lexists","isdir","isfile",
"ismount","walk","expanduser","expandvars","normpath","abspath",
"splitunc","curdir","pardir","sep","pathsep","defpath","altsep",
"extsep","devnull","realpath","supports_unicode_filenames","relpath"]
# strings representing various path-related bits and pieces
curdir = '.'
pardir = '..'
extsep = '.'
sep = '\\'
pathsep = ';'
altsep = '/'
defpath = '.;C:\\bin'
if 'ce' in sys.builtin_module_names:
defpath = '\\Windows'
elif 'os2' in sys.builtin_module_names:
# OS/2 w/ VACPP
altsep = '/'
devnull = 'nul'
# Normalize the case of a pathname and map slashes to backslashes.
# Other normalizations (such as optimizing '../' away) are not done
# (this is done by normpath).
def normcase(s):
"""Normalize case of pathname.
Makes all characters lowercase and all slashes into backslashes."""
return s.replace("/", "\\").lower()
# Return whether a path is absolute.
# Trivial in Posix, harder on the Mac or MS-DOS.
# For DOS it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume letter and colon / UNC resource
# starts with a slash or backslash.
def isabs(s):
"""Test whether a path is absolute"""
s = splitdrive(s)[1]
return s != '' and s[:1] in '/\\'
# Join two (or more) paths.
def join(a, *p):
"""Join two or more pathname components, inserting "\\" as needed.
If any component is an absolute path, all previous path components
will be discarded."""
path = a
for b in p:
b_wins = 0 # set to 1 iff b makes path irrelevant
if path == "":
b_wins = 1
elif isabs(b):
# This probably wipes out path so far. However, it's more
# complicated if path begins with a drive letter:
# 1. join('c:', '/a') == 'c:/a'
# 2. join('c:/', '/a') == 'c:/a'
# But
# 3. join('c:/a', '/b') == '/b'
# 4. join('c:', 'd:/') = 'd:/'
# 5. join('c:/', 'd:/') = 'd:/'
if path[1:2] != ":" or b[1:2] == ":":
# Path doesn't start with a drive letter, or cases 4 and 5.
b_wins = 1
# Else path has a drive letter, and b doesn't but is absolute.
elif len(path) > 3 or (len(path) == 3 and
path[-1] not in "/\\"):
# case 3
b_wins = 1
if b_wins:
path = b
else:
# Join, and ensure there's a separator.
assert len(path) > 0
if path[-1] in "/\\":
if b and b[0] in "/\\":
path += b[1:]
else:
path += b
elif path[-1] == ":":
path += b
elif b:
if b[0] in "/\\":
path += b
else:
path += "\\" + b
else:
# path is not empty and does not end with a backslash,
# but b is empty; since, e.g., split('a/') produces
# ('a', ''), it's best if join() adds a backslash in
# this case.
path += '\\'
return path
# Split a path in a drive specification (a drive letter followed by a
# colon) and the path specification.
# It is always true that drivespec + pathspec == p
def splitdrive(p):
"""Split a pathname into drive and path specifiers. Returns a 2-tuple
"(drive,path)"; either part may be empty"""
pparts = p.split(':', 2)
numparts = len(pparts)
if numparts == 2:
return pparts[0] + ':', pparts[1]
else:
if numparts == 1:
return '', pparts[0]
return '', p
# Parse UNC paths
def splitunc(p):
"""Split a pathname into UNC mount point and relative path specifiers.
Return a 2-tuple (unc, rest); either part may be empty.
If unc is not empty, it has the form '//host/mount' (or similar
using backslashes). unc+rest is always the input path.
Paths containing drive letters never have an UNC part.
"""
if len(p.split(':', 2)) > 1:
return '', p # Drive letter present
firstTwo = p[0:2]
if firstTwo == '//' or firstTwo == '\\\\':
# is a UNC path:
# vvvvvvvvvvvvvvvvvvvv equivalent to drive letter
# \\machine\mountpoint\directories...
# directory ^^^^^^^^^^^^^^^
normp = normcase(p)
index = normp.find('\\', 2)
if index == -1:
##raise RuntimeError, 'illegal UNC path: "' + p + '"'
return ("", p)
index = normp.find('\\', index + 1)
if index == -1:
index = len(p)
return p[:index], p[index:]
return '', p
# Split a path in head (everything up to the last '/') and tail (the
# rest). After the trailing '/' is stripped, the invariant
# join(head, tail) == p holds.
# The resulting head won't end in '/' unless it is the root.
def split(p):
"""Split a pathname.
Return tuple (head, tail) where tail is everything after the final slash.
Either part may be empty."""
d, p = splitdrive(p)
# set i to index beyond p's last slash
i = len(p)
while i and p[i-1] not in '/\\':
i = i - 1
head, tail = p[:i], p[i:] # now tail has no slashes
# remove trailing slashes from head, unless it's all slashes
head2 = head
while head2 and head2[-1] in '/\\':
head2 = head2[:-1]
head = head2 or head
return d + head, tail
# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.
def splitext(p):
return genericpath._splitext(p, sep, altsep, extsep)
splitext.__doc__ = genericpath._splitext.__doc__
# Return the tail (basename) part of a path.
def basename(p):
"""Returns the final component of a pathname"""
return split(p)[1]
# Return the head (dirname) part of a path.
def dirname(p):
"""Returns the directory component of a pathname"""
return split(p)[0]
# Is a path a symbolic link?
# This will always return false on systems where posix.lstat doesn't exist.
def islink(path):
"""Test for symbolic link.
On WindowsNT/95 and OS/2 always returns false
"""
return False
# alias exists to lexists
lexists = exists
# Is a path a mount point? Either a root (with or without drive letter)
# or an UNC path with at most a / or \ after the mount point.
def ismount(path):
"""Test whether a path is a mount point (defined as root of drive)"""
unc, rest = splitunc(path)
if unc:
return rest in ("", "/", "\\")
p = splitdrive(path)[1]
return len(p) == 1 and p[0] in '/\\'
# Directory tree walk.
# For each directory under top (including top itself, but excluding
# '.' and '..'), func(arg, dirname, filenames) is called, where
# dirname is the name of the directory and filenames is the list
# of files (and subdirectories etc.) in the directory.
# The func may modify the filenames list, to implement a filter,
# or to impose a different order of visiting.
def walk(top, func, arg):
"""Directory tree walk with callback function.
For each directory in the directory tree rooted at top (including top
itself, but excluding '.' and '..'), call func(arg, dirname, fnames).
dirname is the name of the directory, and fnames a list of the names of
the files and subdirectories in dirname (excluding '.' and '..'). func
may modify the fnames list in-place (e.g. via del or slice assignment),
and walk will only recurse into the subdirectories whose names remain in
fnames; this can be used to implement a filter, or to impose a specific
order of visiting. No semantics are defined for, or required of, arg,
beyond that arg is always passed to func. It can be used, e.g., to pass
a filename pattern, or a mutable object designed to accumulate
statistics. Passing None for arg is common."""
warnings.warnpy3k("In 3.x, os.path.walk is removed in favor of os.walk.",
stacklevel=2)
try:
names = os.listdir(top)
except os.error:
return
func(arg, top, names)
for name in names:
name = join(top, name)
if isdir(name):
walk(name, func, arg)
# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)
def expanduser(path):
"""Expand ~ and ~user constructs.
If user or $HOME is unknown, do nothing."""
if path[:1] != '~':
return path
i, n = 1, len(path)
while i < n and path[i] not in '/\\':
i = i + 1
if 'HOME' in os.environ:
userhome = os.environ['HOME']
elif 'USERPROFILE' in os.environ:
userhome = os.environ['USERPROFILE']
elif not 'HOMEPATH' in os.environ:
return path
else:
try:
drive = os.environ['HOMEDRIVE']
except KeyError:
drive = ''
userhome = join(drive, os.environ['HOMEPATH'])
if i != 1: #~user
userhome = join(dirname(userhome), path[1:i])
return userhome + path[i:]
# Expand paths containing shell variable substitutions.
# The following rules apply:
# - no expansion within single quotes
# - '$$' is translated into '$'
# - '%%' is translated into '%' if '%%' are not seen in %var1%%var2%
# - ${varname} is accepted.
# - $varname is accepted.
# - %varname% is accepted.
# - varnames can be made out of letters, digits and the characters '_-'
# (though is not verified in the ${varname} and %varname% cases)
# XXX With COMMAND.COM you can use any characters in a variable name,
# XXX except '^|<>='.
def expandvars(path):
"""Expand shell variables of the forms $var, ${var} and %var%.
Unknown variables are left unchanged."""
if '$' not in path and '%' not in path:
return path
import string
varchars = string.ascii_letters + string.digits + '_-'
res = ''
index = 0
pathlen = len(path)
while index < pathlen:
c = path[index]
if c == '\'': # no expansion within single quotes
path = path[index + 1:]
pathlen = len(path)
try:
index = path.index('\'')
res = res + '\'' + path[:index + 1]
except ValueError:
res = res + path
index = pathlen - 1
elif c == '%': # variable or '%'
if path[index + 1:index + 2] == '%':
res = res + c
index = index + 1
else:
path = path[index+1:]
pathlen = len(path)
try:
index = path.index('%')
except ValueError:
res = res + '%' + path
index = pathlen - 1
else:
var = path[:index]
if var in os.environ:
res = res + os.environ[var]
else:
res = res + '%' + var + '%'
elif c == '$': # variable or '$$'
if path[index + 1:index + 2] == '$':
res = res + c
index = index + 1
elif path[index + 1:index + 2] == '{':
path = path[index+2:]
pathlen = len(path)
try:
index = path.index('}')
var = path[:index]
if var in os.environ:
res = res + os.environ[var]
else:
res = res + '${' + var + '}'
except ValueError:
res = res + '${' + path
index = pathlen - 1
else:
var = ''
index = index + 1
c = path[index:index + 1]
while c != '' and c in varchars:
var = var + c
index = index + 1
c = path[index:index + 1]
if var in os.environ:
res = res + os.environ[var]
else:
res = res + '$' + var
if c != '':
index = index - 1
else:
res = res + c
index = index + 1
return res
# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A\B.
# Previously, this function also truncated pathnames to 8+3 format,
# but as this module is called "ntpath", that's obviously wrong!
def normpath(path):
"""Normalize path, eliminating double slashes, etc."""
# Preserve unicode (if path is unicode)
backslash, dot = (u'\\', u'.') if isinstance(path, unicode) else ('\\', '.')
if path.startswith(('\\\\.\\', '\\\\?\\')):
# in the case of paths with these prefixes:
# \\.\ -> device names
# \\?\ -> literal paths
# do not do any normalization, but return the path unchanged
return path
path = path.replace("/", "\\")
prefix, path = splitdrive(path)
# We need to be careful here. If the prefix is empty, and the path starts
# with a backslash, it could either be an absolute path on the current
# drive (\dir1\dir2\file) or a UNC filename (\\server\mount\dir1\file). It
# is therefore imperative NOT to collapse multiple backslashes blindly in
# that case.
# The code below preserves multiple backslashes when there is no drive
# letter. This means that the invalid filename \\\a\b is preserved
# unchanged, where a\\\b is normalised to a\b. It's not clear that there
# is any better behaviour for such edge cases.
if prefix == '':
# No drive letter - preserve initial backslashes
while path[:1] == "\\":
prefix = prefix + backslash
path = path[1:]
else:
# We have a drive letter - collapse initial backslashes
if path.startswith("\\"):
prefix = prefix + backslash
path = path.lstrip("\\")
comps = path.split("\\")
i = 0
while i < len(comps):
if comps[i] in ('.', ''):
del comps[i]
elif comps[i] == '..':
if i > 0 and comps[i-1] != '..':
del comps[i-1:i+1]
i -= 1
elif i == 0 and prefix.endswith("\\"):
del comps[i]
else:
i += 1
else:
i += 1
# If the path is now empty, substitute '.'
if not prefix and not comps:
comps.append(dot)
return prefix + backslash.join(comps)
# Return an absolute path.
try:
from nt import _getfullpathname
except ImportError: # not running on Windows - mock up something sensible
def abspath(path):
"""Return the absolute version of a path."""
if not isabs(path):
if isinstance(path, unicode):
cwd = os.getcwdu()
else:
cwd = os.getcwd()
path = join(cwd, path)
return normpath(path)
else: # use native Windows method on Windows
def abspath(path):
"""Return the absolute version of a path."""
if path: # Empty path must return current working directory.
try:
path = _getfullpathname(path)
except WindowsError:
pass # Bad path - return unchanged.
elif isinstance(path, unicode):
path = os.getcwdu()
else:
path = os.getcwd()
return normpath(path)
# realpath is a no-op on systems without islink support
realpath = abspath
# Win9x family and earlier have no Unicode filename support.
supports_unicode_filenames = (hasattr(sys, "getwindowsversion") and
sys.getwindowsversion()[3] >= 2)
def _abspath_split(path):
abs = abspath(normpath(path))
prefix, rest = splitunc(abs)
is_unc = bool(prefix)
if not is_unc:
prefix, rest = splitdrive(abs)
return is_unc, prefix, [x for x in rest.split(sep) if x]
def relpath(path, start=curdir):
"""Return a relative version of a path"""
if not path:
raise ValueError("no path specified")
start_is_unc, start_prefix, start_list = _abspath_split(start)
path_is_unc, path_prefix, path_list = _abspath_split(path)
if path_is_unc ^ start_is_unc:
raise ValueError("Cannot mix UNC and non-UNC paths (%s and %s)"
% (path, start))
if path_prefix.lower() != start_prefix.lower():
if path_is_unc:
raise ValueError("path is on UNC root %s, start on UNC root %s"
% (path_prefix, start_prefix))
else:
raise ValueError("path is on drive %s, start on drive %s"
% (path_prefix, start_prefix))
# Work out how much of the filepath is shared by start and path.
i = 0
for e1, e2 in zip(start_list, path_list):
if e1.lower() != e2.lower():
break
i += 1
rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
if not rel_list:
return curdir
return join(*rel_list)

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"""OS routines for Mac, NT, Posix, or UEFI depending on what system we're on.
This exports:
- all functions from edk2, posix, nt, os2, or ce, e.g. unlink, stat, etc.
- os.path is one of the modules uefipath, posixpath, or ntpath
- os.name is 'edk2', 'posix', 'nt', 'os2', 'ce' or 'riscos'
- os.curdir is a string representing the current directory ('.' or ':')
- os.pardir is a string representing the parent directory ('..' or '::')
- os.sep is the (or a most common) pathname separator ('/' or ':' or '\\')
- os.extsep is the extension separator ('.' or '/')
- os.altsep is the alternate pathname separator (None or '/')
- os.pathsep is the component separator used in $PATH etc
- os.linesep is the line separator in text files ('\r' or '\n' or '\r\n')
- os.defpath is the default search path for executables
- os.devnull is the file path of the null device ('/dev/null', etc.)
Programs that import and use 'os' stand a better chance of being
portable between different platforms. Of course, they must then
only use functions that are defined by all platforms (e.g., unlink
and opendir), and leave all pathname manipulation to os.path
(e.g., split and join).
"""
#'
import sys, errno
_names = sys.builtin_module_names
# Note: more names are added to __all__ later.
__all__ = ["altsep", "curdir", "pardir", "sep", "extsep", "pathsep", "linesep",
"defpath", "name", "path", "devnull",
"SEEK_SET", "SEEK_CUR", "SEEK_END"]
def _get_exports_list(module):
try:
return list(module.__all__)
except AttributeError:
return [n for n in dir(module) if n[0] != '_']
if 'posix' in _names:
name = 'posix'
linesep = '\n'
from posix import *
try:
from posix import _exit
except ImportError:
pass
import posixpath as path
import posix
__all__.extend(_get_exports_list(posix))
del posix
elif 'nt' in _names:
name = 'nt'
linesep = '\r\n'
from nt import *
try:
from nt import _exit
except ImportError:
pass
import ntpath as path
import nt
__all__.extend(_get_exports_list(nt))
del nt
elif 'os2' in _names:
name = 'os2'
linesep = '\r\n'
from os2 import *
try:
from os2 import _exit
except ImportError:
pass
if sys.version.find('EMX GCC') == -1:
import ntpath as path
else:
import os2emxpath as path
from _emx_link import link
import os2
__all__.extend(_get_exports_list(os2))
del os2
elif 'ce' in _names:
name = 'ce'
linesep = '\r\n'
from ce import *
try:
from ce import _exit
except ImportError:
pass
# We can use the standard Windows path.
import ntpath as path
import ce
__all__.extend(_get_exports_list(ce))
del ce
elif 'riscos' in _names:
name = 'riscos'
linesep = '\n'
from riscos import *
try:
from riscos import _exit
except ImportError:
pass
import riscospath as path
import riscos
__all__.extend(_get_exports_list(riscos))
del riscos
elif 'edk2' in _names:
name = 'edk2'
linesep = '\n'
from edk2 import *
try:
from edk2 import _exit
except ImportError:
pass
import ntpath as path
import edk2
__all__.extend(_get_exports_list(edk2))
del edk2
else:
raise ImportError, 'no os specific module found'
sys.modules['os.path'] = path
from os.path import (curdir, pardir, sep, pathsep, defpath, extsep, altsep,
devnull)
del _names
# Python uses fixed values for the SEEK_ constants; they are mapped
# to native constants if necessary in posixmodule.c
SEEK_SET = 0
SEEK_CUR = 1
SEEK_END = 2
#'
# Super directory utilities.
# (Inspired by Eric Raymond; the doc strings are mostly his)
def makedirs(name, mode=0777):
"""makedirs(path [, mode=0777])
Super-mkdir; create a leaf directory and all intermediate ones.
Works like mkdir, except that any intermediate path segment (not
just the rightmost) will be created if it does not exist. This is
recursive.
"""
head, tail = path.split(name)
if not tail:
head, tail = path.split(head)
if head and tail and not path.exists(head):
try:
makedirs(head, mode)
except OSError, e:
# be happy if someone already created the path
if e.errno != errno.EEXIST:
raise
if tail == curdir: # xxx/newdir/. exists if xxx/newdir exists
return
mkdir(name, mode)
def removedirs(name):
"""removedirs(path)
Super-rmdir; remove a leaf directory and all empty intermediate
ones. Works like rmdir except that, if the leaf directory is
successfully removed, directories corresponding to rightmost path
segments will be pruned away until either the whole path is
consumed or an error occurs. Errors during this latter phase are
ignored -- they generally mean that a directory was not empty.
"""
rmdir(name)
head, tail = path.split(name)
if not tail:
head, tail = path.split(head)
while head and tail:
try:
rmdir(head)
except error:
break
head, tail = path.split(head)
def renames(old, new):
"""renames(old, new)
Super-rename; create directories as necessary and delete any left
empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned way until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
file.
"""
head, tail = path.split(new)
if head and tail and not path.exists(head):
makedirs(head)
rename(old, new)
head, tail = path.split(old)
if head and tail:
try:
removedirs(head)
except error:
pass
__all__.extend(["makedirs", "removedirs", "renames"])
def walk(top, topdown=True, onerror=None, followlinks=False):
"""Directory tree generator.
For each directory in the directory tree rooted at top (including top
itself, but excluding '.' and '..'), yields a 3-tuple
dirpath, dirnames, filenames
dirpath is a string, the path to the directory. dirnames is a list of
the names of the subdirectories in dirpath (excluding '.' and '..').
filenames is a list of the names of the non-directory files in dirpath.
Note that the names in the lists are just names, with no path components.
To get a full path (which begins with top) to a file or directory in
dirpath, do os.path.join(dirpath, name).
If optional arg 'topdown' is true or not specified, the triple for a
directory is generated before the triples for any of its subdirectories
(directories are generated top down). If topdown is false, the triple
for a directory is generated after the triples for all of its
subdirectories (directories are generated bottom up).
When topdown is true, the caller can modify the dirnames list in-place
(e.g., via del or slice assignment), and walk will only recurse into the
subdirectories whose names remain in dirnames; this can be used to prune
the search, or to impose a specific order of visiting. Modifying
dirnames when topdown is false is ineffective, since the directories in
dirnames have already been generated by the time dirnames itself is
generated.
By default errors from the os.listdir() call are ignored. If
optional arg 'onerror' is specified, it should be a function; it
will be called with one argument, an os.error instance. It can
report the error to continue with the walk, or raise the exception
to abort the walk. Note that the filename is available as the
filename attribute of the exception object.
By default, os.walk does not follow symbolic links to subdirectories on
systems that support them. In order to get this functionality, set the
optional argument 'followlinks' to true.
Caution: if you pass a relative pathname for top, don't change the
current working directory between resumptions of walk. walk never
changes the current directory, and assumes that the client doesn't
either.
Example:
import os
from os.path import join, getsize
for root, dirs, files in os.walk('python/Lib/email'):
print root, "consumes",
print sum([getsize(join(root, name)) for name in files]),
print "bytes in", len(files), "non-directory files"
if 'CVS' in dirs:
dirs.remove('CVS') # don't visit CVS directories
"""
islink, join, isdir = path.islink, path.join, path.isdir
# We may not have read permission for top, in which case we can't
# get a list of the files the directory contains. os.path.walk
# always suppressed the exception then, rather than blow up for a
# minor reason when (say) a thousand readable directories are still
# left to visit. That logic is copied here.
try:
# Note that listdir and error are globals in this module due
# to earlier import-*.
names = listdir(top)
except error, err:
if onerror is not None:
onerror(err)
return
dirs, nondirs = [], []
for name in names:
if isdir(join(top, name)):
dirs.append(name)
else:
nondirs.append(name)
if topdown:
yield top, dirs, nondirs
for name in dirs:
new_path = join(top, name)
if followlinks or not islink(new_path):
for x in walk(new_path, topdown, onerror, followlinks):
yield x
if not topdown:
yield top, dirs, nondirs
__all__.append("walk")
# Make sure os.environ exists, at least
try:
environ
except NameError:
environ = {}
def execl(file, *args):
"""execl(file, *args)
Execute the executable file with argument list args, replacing the
current process. """
execv(file, args)
def execle(file, *args):
"""execle(file, *args, env)
Execute the executable file with argument list args and
environment env, replacing the current process. """
env = args[-1]
execve(file, args[:-1], env)
def execlp(file, *args):
"""execlp(file, *args)
Execute the executable file (which is searched for along $PATH)
with argument list args, replacing the current process. """
execvp(file, args)
def execlpe(file, *args):
"""execlpe(file, *args, env)
Execute the executable file (which is searched for along $PATH)
with argument list args and environment env, replacing the current
process. """
env = args[-1]
execvpe(file, args[:-1], env)
def execvp(file, args):
"""execvp(file, args)
Execute the executable file (which is searched for along $PATH)
with argument list args, replacing the current process.
args may be a list or tuple of strings. """
_execvpe(file, args)
def execvpe(file, args, env):
"""execvpe(file, args, env)
Execute the executable file (which is searched for along $PATH)
with argument list args and environment env , replacing the
current process.
args may be a list or tuple of strings. """
_execvpe(file, args, env)
__all__.extend(["execl","execle","execlp","execlpe","execvp","execvpe"])
def _execvpe(file, args, env=None):
if env is not None:
func = execve
argrest = (args, env)
else:
func = execv
argrest = (args,)
env = environ
head, tail = path.split(file)
if head:
func(file, *argrest)
return
if 'PATH' in env:
envpath = env['PATH']
else:
envpath = defpath
PATH = envpath.split(pathsep)
saved_exc = None
saved_tb = None
for dir in PATH:
fullname = path.join(dir, file)
try:
func(fullname, *argrest)
except error, e:
tb = sys.exc_info()[2]
if (e.errno != errno.ENOENT and e.errno != errno.ENOTDIR
and saved_exc is None):
saved_exc = e
saved_tb = tb
if saved_exc:
raise error, saved_exc, saved_tb
raise error, e, tb
# Change environ to automatically call putenv() if it exists
try:
# This will fail if there's no putenv
putenv
except NameError:
pass
else:
import UserDict
# Fake unsetenv() for Windows
# not sure about os2 here but
# I'm guessing they are the same.
if name in ('os2', 'nt'):
def unsetenv(key):
putenv(key, "")
if name == "riscos":
# On RISC OS, all env access goes through getenv and putenv
from riscosenviron import _Environ
elif name in ('os2', 'nt'): # Where Env Var Names Must Be UPPERCASE
# But we store them as upper case
class _Environ(UserDict.IterableUserDict):
def __init__(self, environ):
UserDict.UserDict.__init__(self)
data = self.data
for k, v in environ.items():
data[k.upper()] = v
def __setitem__(self, key, item):
putenv(key, item)
self.data[key.upper()] = item
def __getitem__(self, key):
return self.data[key.upper()]
try:
unsetenv
except NameError:
def __delitem__(self, key):
del self.data[key.upper()]
else:
def __delitem__(self, key):
unsetenv(key)
del self.data[key.upper()]
def clear(self):
for key in self.data.keys():
unsetenv(key)
del self.data[key]
def pop(self, key, *args):
unsetenv(key)
return self.data.pop(key.upper(), *args)
def has_key(self, key):
return key.upper() in self.data
def __contains__(self, key):
return key.upper() in self.data
def get(self, key, failobj=None):
return self.data.get(key.upper(), failobj)
def update(self, dict=None, **kwargs):
if dict:
try:
keys = dict.keys()
except AttributeError:
# List of (key, value)
for k, v in dict:
self[k] = v
else:
# got keys
# cannot use items(), since mappings
# may not have them.
for k in keys:
self[k] = dict[k]
if kwargs:
self.update(kwargs)
def copy(self):
return dict(self)
else: # Where Env Var Names Can Be Mixed Case
class _Environ(UserDict.IterableUserDict):
def __init__(self, environ):
UserDict.UserDict.__init__(self)
self.data = environ
def __setitem__(self, key, item):
putenv(key, item)
self.data[key] = item
def update(self, dict=None, **kwargs):
if dict:
try:
keys = dict.keys()
except AttributeError:
# List of (key, value)
for k, v in dict:
self[k] = v
else:
# got keys
# cannot use items(), since mappings
# may not have them.
for k in keys:
self[k] = dict[k]
if kwargs:
self.update(kwargs)
try:
unsetenv
except NameError:
pass
else:
def __delitem__(self, key):
unsetenv(key)
del self.data[key]
def clear(self):
for key in self.data.keys():
unsetenv(key)
del self.data[key]
def pop(self, key, *args):
unsetenv(key)
return self.data.pop(key, *args)
def copy(self):
return dict(self)
environ = _Environ(environ)
def getenv(key, default=None):
"""Get an environment variable, return None if it doesn't exist.
The optional second argument can specify an alternate default."""
return environ.get(key, default)
__all__.append("getenv")
def _exists(name):
return name in globals()
# Supply spawn*() (probably only for Unix)
if _exists("fork") and not _exists("spawnv") and _exists("execv"):
P_WAIT = 0
P_NOWAIT = P_NOWAITO = 1
# XXX Should we support P_DETACH? I suppose it could fork()**2
# and close the std I/O streams. Also, P_OVERLAY is the same
# as execv*()?
def _spawnvef(mode, file, args, env, func):
# Internal helper; func is the exec*() function to use
pid = fork()
if not pid:
# Child
try:
if env is None:
func(file, args)
else:
func(file, args, env)
except:
_exit(127)
else:
# Parent
if mode == P_NOWAIT:
return pid # Caller is responsible for waiting!
while 1:
wpid, sts = waitpid(pid, 0)
if WIFSTOPPED(sts):
continue
elif WIFSIGNALED(sts):
return -WTERMSIG(sts)
elif WIFEXITED(sts):
return WEXITSTATUS(sts)
else:
raise error, "Not stopped, signaled or exited???"
def spawnv(mode, file, args):
"""spawnv(mode, file, args) -> integer
Execute file with arguments from args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return _spawnvef(mode, file, args, None, execv)
def spawnve(mode, file, args, env):
"""spawnve(mode, file, args, env) -> integer
Execute file with arguments from args in a subprocess with the
specified environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return _spawnvef(mode, file, args, env, execve)
# Note: spawnvp[e] is't currently supported on Windows
def spawnvp(mode, file, args):
"""spawnvp(mode, file, args) -> integer
Execute file (which is looked for along $PATH) with arguments from
args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return _spawnvef(mode, file, args, None, execvp)
def spawnvpe(mode, file, args, env):
"""spawnvpe(mode, file, args, env) -> integer
Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return _spawnvef(mode, file, args, env, execvpe)
if _exists("spawnv"):
# These aren't supplied by the basic Windows code
# but can be easily implemented in Python
def spawnl(mode, file, *args):
"""spawnl(mode, file, *args) -> integer
Execute file with arguments from args in a subprocess.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return spawnv(mode, file, args)
def spawnle(mode, file, *args):
"""spawnle(mode, file, *args, env) -> integer
Execute file with arguments from args in a subprocess with the
supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
env = args[-1]
return spawnve(mode, file, args[:-1], env)
__all__.extend(["spawnv", "spawnve", "spawnl", "spawnle",])
if _exists("spawnvp"):
# At the moment, Windows doesn't implement spawnvp[e],
# so it won't have spawnlp[e] either.
def spawnlp(mode, file, *args):
"""spawnlp(mode, file, *args) -> integer
Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
return spawnvp(mode, file, args)
def spawnlpe(mode, file, *args):
"""spawnlpe(mode, file, *args, env) -> integer
Execute file (which is looked for along $PATH) with arguments from
args in a subprocess with the supplied environment.
If mode == P_NOWAIT return the pid of the process.
If mode == P_WAIT return the process's exit code if it exits normally;
otherwise return -SIG, where SIG is the signal that killed it. """
env = args[-1]
return spawnvpe(mode, file, args[:-1], env)
__all__.extend(["spawnvp", "spawnvpe", "spawnlp", "spawnlpe",])
# Supply popen2 etc. (for Unix)
if _exists("fork"):
if not _exists("popen2"):
def popen2(cmd, mode="t", bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd'
may be a sequence, in which case arguments will be passed directly to
the program without shell intervention (as with os.spawnv()). If 'cmd'
is a string it will be passed to the shell (as with os.system()). If
'bufsize' is specified, it sets the buffer size for the I/O pipes. The
file objects (child_stdin, child_stdout) are returned."""
import warnings
msg = "os.popen2 is deprecated. Use the subprocess module."
warnings.warn(msg, DeprecationWarning, stacklevel=2)
import subprocess
PIPE = subprocess.PIPE
p = subprocess.Popen(cmd, shell=isinstance(cmd, basestring),
bufsize=bufsize, stdin=PIPE, stdout=PIPE,
close_fds=True)
return p.stdin, p.stdout
__all__.append("popen2")
if not _exists("popen3"):
def popen3(cmd, mode="t", bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd'
may be a sequence, in which case arguments will be passed directly to
the program without shell intervention (as with os.spawnv()). If 'cmd'
is a string it will be passed to the shell (as with os.system()). If
'bufsize' is specified, it sets the buffer size for the I/O pipes. The
file objects (child_stdin, child_stdout, child_stderr) are returned."""
import warnings
msg = "os.popen3 is deprecated. Use the subprocess module."
warnings.warn(msg, DeprecationWarning, stacklevel=2)
import subprocess
PIPE = subprocess.PIPE
p = subprocess.Popen(cmd, shell=isinstance(cmd, basestring),
bufsize=bufsize, stdin=PIPE, stdout=PIPE,
stderr=PIPE, close_fds=True)
return p.stdin, p.stdout, p.stderr
__all__.append("popen3")
if not _exists("popen4"):
def popen4(cmd, mode="t", bufsize=-1):
"""Execute the shell command 'cmd' in a sub-process. On UNIX, 'cmd'
may be a sequence, in which case arguments will be passed directly to
the program without shell intervention (as with os.spawnv()). If 'cmd'
is a string it will be passed to the shell (as with os.system()). If
'bufsize' is specified, it sets the buffer size for the I/O pipes. The
file objects (child_stdin, child_stdout_stderr) are returned."""
import warnings
msg = "os.popen4 is deprecated. Use the subprocess module."
warnings.warn(msg, DeprecationWarning, stacklevel=2)
import subprocess
PIPE = subprocess.PIPE
p = subprocess.Popen(cmd, shell=isinstance(cmd, basestring),
bufsize=bufsize, stdin=PIPE, stdout=PIPE,
stderr=subprocess.STDOUT, close_fds=True)
return p.stdin, p.stdout
__all__.append("popen4")
import copy_reg as _copy_reg
def _make_stat_result(tup, dict):
return stat_result(tup, dict)
def _pickle_stat_result(sr):
(type, args) = sr.__reduce__()
return (_make_stat_result, args)
try:
_copy_reg.pickle(stat_result, _pickle_stat_result, _make_stat_result)
except NameError: # stat_result may not exist
pass
def _make_statvfs_result(tup, dict):
return statvfs_result(tup, dict)
def _pickle_statvfs_result(sr):
(type, args) = sr.__reduce__()
return (_make_statvfs_result, args)
try:
_copy_reg.pickle(statvfs_result, _pickle_statvfs_result,
_make_statvfs_result)
except NameError: # statvfs_result may not exist
pass
if not _exists("urandom"):
def urandom(n):
"""urandom(n) -> str
Return a string of n random bytes suitable for cryptographic use.
"""
try:
_urandomfd = open("/dev/urandom", O_RDONLY)
except (OSError, IOError):
raise NotImplementedError("/dev/urandom (or equivalent) not found")
try:
bs = b""
while n > len(bs):
bs += read(_urandomfd, n - len(bs))
finally:
close(_urandomfd)
return bs

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@ -0,0 +1,537 @@
"""Append module search paths for third-party packages to sys.path.
****************************************************************
* This module is automatically imported during initialization. *
****************************************************************
This is a UEFI-specific version of site.py.
In earlier versions of Python (up to 1.5a3), scripts or modules that
needed to use site-specific modules would place ``import site''
somewhere near the top of their code. Because of the automatic
import, this is no longer necessary (but code that does it still
works).
This will append site-specific paths to the module search path. It
starts with sys.prefix and sys.exec_prefix (if different) and appends
lib/python<version>/site-packages as well as lib/site-python.
The resulting directories, if they exist, are appended to sys.path,
and also inspected for path configuration files.
A path configuration file is a file whose name has the form
<package>.pth; its contents are additional directories (one per line)
to be added to sys.path. Non-existing directories (or
non-directories) are never added to sys.path; no directory is added to
sys.path more than once. Blank lines and lines beginning with
'#' are skipped. Lines starting with 'import' are executed.
For example, suppose sys.prefix and sys.exec_prefix are set to
/Efi/StdLib and there is a directory /Efi/StdLib/lib/python2.7/site-packages
with three subdirectories, foo, bar and spam, and two path
configuration files, foo.pth and bar.pth. Assume foo.pth contains the
following:
# foo package configuration
foo
bar
bletch
and bar.pth contains:
# bar package configuration
bar
Then the following directories are added to sys.path, in this order:
/Efi/StdLib/lib/python2.7/site-packages/bar
/Efi/StdLib/lib/python2.7/site-packages/foo
Note that bletch is omitted because it doesn't exist; bar precedes foo
because bar.pth comes alphabetically before foo.pth; and spam is
omitted because it is not mentioned in either path configuration file.
After these path manipulations, an attempt is made to import a module
named sitecustomize, which can perform arbitrary additional
site-specific customizations. If this import fails with an
ImportError exception, it is silently ignored.
Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
"""
import sys
import os
import __builtin__
import traceback
# Prefixes for site-packages; add additional prefixes like /usr/local here
PREFIXES = [sys.prefix, sys.exec_prefix]
# Enable per user site-packages directory
# set it to False to disable the feature or True to force the feature
ENABLE_USER_SITE = False
# for distutils.commands.install
# These values are initialized by the getuserbase() and getusersitepackages()
# functions, through the main() function when Python starts.
USER_SITE = None
USER_BASE = None
def makepath(*paths):
dir = os.path.join(*paths)
try:
dir = os.path.abspath(dir)
except OSError:
pass
return dir, os.path.normcase(dir)
def abs__file__():
"""Set all module' __file__ attribute to an absolute path"""
for m in sys.modules.values():
if hasattr(m, '__loader__'):
continue # don't mess with a PEP 302-supplied __file__
try:
m.__file__ = os.path.abspath(m.__file__)
except (AttributeError, OSError):
pass
def removeduppaths():
""" Remove duplicate entries from sys.path along with making them
absolute"""
# This ensures that the initial path provided by the interpreter contains
# only absolute pathnames, even if we're running from the build directory.
L = []
known_paths = set()
for dir in sys.path:
# Filter out duplicate paths (on case-insensitive file systems also
# if they only differ in case); turn relative paths into absolute
# paths.
dir, dircase = makepath(dir)
if not dircase in known_paths:
L.append(dir)
known_paths.add(dircase)
sys.path[:] = L
return known_paths
def _init_pathinfo():
"""Return a set containing all existing directory entries from sys.path"""
d = set()
for dir in sys.path:
try:
if os.path.isdir(dir):
dir, dircase = makepath(dir)
d.add(dircase)
except TypeError:
continue
return d
def addpackage(sitedir, name, known_paths):
"""Process a .pth file within the site-packages directory:
For each line in the file, either combine it with sitedir to a path
and add that to known_paths, or execute it if it starts with 'import '.
"""
if known_paths is None:
_init_pathinfo()
reset = 1
else:
reset = 0
fullname = os.path.join(sitedir, name)
try:
f = open(fullname, "rU")
except IOError:
return
with f:
for n, line in enumerate(f):
if line.startswith("#"):
continue
try:
if line.startswith(("import ", "import\t")):
exec line
continue
line = line.rstrip()
dir, dircase = makepath(sitedir, line)
if not dircase in known_paths and os.path.exists(dir):
sys.path.append(dir)
known_paths.add(dircase)
except Exception as err:
print >>sys.stderr, "Error processing line {:d} of {}:\n".format(
n+1, fullname)
for record in traceback.format_exception(*sys.exc_info()):
for line in record.splitlines():
print >>sys.stderr, ' '+line
print >>sys.stderr, "\nRemainder of file ignored"
break
if reset:
known_paths = None
return known_paths
def addsitedir(sitedir, known_paths=None):
"""Add 'sitedir' argument to sys.path if missing and handle .pth files in
'sitedir'"""
if known_paths is None:
known_paths = _init_pathinfo()
reset = 1
else:
reset = 0
sitedir, sitedircase = makepath(sitedir)
if not sitedircase in known_paths:
sys.path.append(sitedir) # Add path component
try:
names = os.listdir(sitedir)
except os.error:
return
dotpth = os.extsep + "pth"
names = [name for name in names if name.endswith(dotpth)]
for name in sorted(names):
addpackage(sitedir, name, known_paths)
if reset:
known_paths = None
return known_paths
def check_enableusersite():
"""Check if user site directory is safe for inclusion
The function tests for the command line flag (including environment var),
process uid/gid equal to effective uid/gid.
None: Disabled for security reasons
False: Disabled by user (command line option)
True: Safe and enabled
"""
if sys.flags.no_user_site:
return False
if hasattr(os, "getuid") and hasattr(os, "geteuid"):
# check process uid == effective uid
if os.geteuid() != os.getuid():
return None
if hasattr(os, "getgid") and hasattr(os, "getegid"):
# check process gid == effective gid
if os.getegid() != os.getgid():
return None
return True
def getuserbase():
"""Returns the `user base` directory path.
The `user base` directory can be used to store data. If the global
variable ``USER_BASE`` is not initialized yet, this function will also set
it.
"""
global USER_BASE
if USER_BASE is not None:
return USER_BASE
from sysconfig import get_config_var
USER_BASE = get_config_var('userbase')
return USER_BASE
def getusersitepackages():
"""Returns the user-specific site-packages directory path.
If the global variable ``USER_SITE`` is not initialized yet, this
function will also set it.
"""
global USER_SITE
user_base = getuserbase() # this will also set USER_BASE
if USER_SITE is not None:
return USER_SITE
from sysconfig import get_path
import os
USER_SITE = get_path('purelib', '%s_user' % os.name)
return USER_SITE
def addusersitepackages(known_paths):
"""Add a per user site-package to sys.path
Each user has its own python directory with site-packages in the
home directory.
"""
# get the per user site-package path
# this call will also make sure USER_BASE and USER_SITE are set
user_site = getusersitepackages()
if ENABLE_USER_SITE and os.path.isdir(user_site):
addsitedir(user_site, known_paths)
return known_paths
def getsitepackages():
"""Returns a list containing all global site-packages directories
(and possibly site-python).
For each directory present in the global ``PREFIXES``, this function
will find its `site-packages` subdirectory depending on the system
environment, and will return a list of full paths.
"""
sitepackages = []
seen = set()
for prefix in PREFIXES:
if not prefix or prefix in seen:
continue
seen.add(prefix)
sitepackages.append(os.path.join(prefix, "lib",
"python." + sys.version[0] + sys.version[2],
"site-packages"))
sitepackages.append(os.path.join(prefix, "lib", "site-python"))
return sitepackages
def addsitepackages(known_paths):
"""Add site-packages (and possibly site-python) to sys.path"""
for sitedir in getsitepackages():
if os.path.isdir(sitedir):
addsitedir(sitedir, known_paths)
return known_paths
def setBEGINLIBPATH():
"""The UEFI port has optional extension modules that do double duty
as DLLs (even though they have .efi file extensions) for other extensions.
The library search path needs to be amended so these will be found
during module import. Use BEGINLIBPATH so that these are at the start
of the library search path.
"""
dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
libpath = os.environ['BEGINLIBPATH'].split(os.path.pathsep)
if libpath[-1]:
libpath.append(dllpath)
else:
libpath[-1] = dllpath
os.environ['BEGINLIBPATH'] = os.path.pathsep.join(libpath)
def setquit():
"""Define new builtins 'quit' and 'exit'.
These are objects which make the interpreter exit when called.
The repr of each object contains a hint at how it works.
"""
eof = 'Ctrl-D (i.e. EOF)'
class Quitter(object):
def __init__(self, name):
self.name = name
def __repr__(self):
return 'Use %s() or %s to exit' % (self.name, eof)
def __call__(self, code=None):
# Shells like IDLE catch the SystemExit, but listen when their
# stdin wrapper is closed.
try:
sys.stdin.close()
except:
pass
raise SystemExit(code)
__builtin__.quit = Quitter('quit')
__builtin__.exit = Quitter('exit')
class _Printer(object):
"""interactive prompt objects for printing the license text, a list of
contributors and the copyright notice."""
MAXLINES = 23
def __init__(self, name, data, files=(), dirs=()):
self.__name = name
self.__data = data
self.__files = files
self.__dirs = dirs
self.__lines = None
def __setup(self):
if self.__lines:
return
data = None
for dir in self.__dirs:
for filename in self.__files:
filename = os.path.join(dir, filename)
try:
fp = file(filename, "rU")
data = fp.read()
fp.close()
break
except IOError:
pass
if data:
break
if not data:
data = self.__data
self.__lines = data.split('\n')
self.__linecnt = len(self.__lines)
def __repr__(self):
self.__setup()
if len(self.__lines) <= self.MAXLINES:
return "\n".join(self.__lines)
else:
return "Type %s() to see the full %s text" % ((self.__name,)*2)
def __call__(self):
self.__setup()
prompt = 'Hit Return for more, or q (and Return) to quit: '
lineno = 0
while 1:
try:
for i in range(lineno, lineno + self.MAXLINES):
print self.__lines[i]
except IndexError:
break
else:
lineno += self.MAXLINES
key = None
while key is None:
key = raw_input(prompt)
if key not in ('', 'q'):
key = None
if key == 'q':
break
def setcopyright():
"""Set 'copyright' and 'credits' in __builtin__"""
__builtin__.copyright = _Printer("copyright", sys.copyright)
__builtin__.credits = _Printer("credits", """\
Thanks to CWI, CNRI, BeOpen.com, Zope Corporation and a cast of thousands
for supporting Python development. See www.python.org for more information.""")
here = os.path.dirname(os.__file__)
__builtin__.license = _Printer(
"license", "See http://www.python.org/%.3s/license.html" % sys.version,
["LICENSE.txt", "LICENSE"],
[os.path.join(here, os.pardir), here, os.curdir])
class _Helper(object):
"""Define the builtin 'help'.
This is a wrapper around pydoc.help (with a twist).
"""
def __repr__(self):
return "Type help() for interactive help, " \
"or help(object) for help about object."
def __call__(self, *args, **kwds):
import pydoc
return pydoc.help(*args, **kwds)
def sethelper():
__builtin__.help = _Helper()
####
# Keep around for future mbcs support.
####
#def aliasmbcs():
# """On Windows, some default encodings are not provided by Python,
# while they are always available as "mbcs" in each locale. Make
# them usable by aliasing to "mbcs" in such a case."""
# if sys.platform == 'win32':
# import locale, codecs
# enc = locale.getdefaultlocale()[1]
# if enc.startswith('cp'): # "cp***" ?
# try:
# codecs.lookup(enc)
# except LookupError:
# import encodings
# encodings._cache[enc] = encodings._unknown
# encodings.aliases.aliases[enc] = 'mbcs'
def setencoding():
"""Set the string encoding used by the Unicode implementation. The
default is 'ascii', but if you're willing to experiment, you can
change this."""
encoding = "ascii" # Default value set by _PyUnicode_Init()
if 0:
# Enable to support locale aware default string encodings.
import locale
loc = locale.getdefaultlocale()
if loc[1]:
encoding = loc[1]
if 0:
# Enable to switch off string to Unicode coercion and implicit
# Unicode to string conversion.
encoding = "undefined"
if encoding != "ascii":
# On Non-Unicode builds this will raise an AttributeError...
sys.setdefaultencoding(encoding) # Needs Python Unicode build !
def execsitecustomize():
"""Run custom site specific code, if available."""
try:
import sitecustomize
except ImportError:
pass
except Exception:
if sys.flags.verbose:
sys.excepthook(*sys.exc_info())
else:
print >>sys.stderr, \
"'import sitecustomize' failed; use -v for traceback"
def execusercustomize():
"""Run custom user specific code, if available."""
try:
import usercustomize
except ImportError:
pass
except Exception:
if sys.flags.verbose:
sys.excepthook(*sys.exc_info())
else:
print>>sys.stderr, \
"'import usercustomize' failed; use -v for traceback"
def main():
abs__file__()
known_paths = removeduppaths()
known_paths = addsitepackages(known_paths)
setquit()
setcopyright()
sethelper()
# aliasmbcs()
setencoding()
execsitecustomize()
# Remove sys.setdefaultencoding() so that users cannot change the
# encoding after initialization. The test for presence is needed when
# this module is run as a script, because this code is executed twice.
if hasattr(sys, "setdefaultencoding"):
del sys.setdefaultencoding
main()
def _script():
help = """\
%s
Path elements are normally separated by '%s'.
"""
print "sys.path = ["
for dir in sys.path:
print " %r," % (dir,)
print "]"
import textwrap
print textwrap.dedent(help % (sys.argv[0], os.pathsep))
sys.exit(0)
if __name__ == '__main__':
_script()

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