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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1676 6f19259b-4bc3-4df7-8a09-765794883524
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lhauch
2006-10-05 23:24:16 +00:00
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325
Tools/CCode/Source/Pccts/h/AToken.h Normal file
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/* ANTLRToken.h
*
* SOFTWARE RIGHTS
*
* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
* Set (PCCTS) -- PCCTS is in the public domain. An individual or
* company may do whatever they wish with source code distributed with
* PCCTS or the code generated by PCCTS, including the incorporation of
* PCCTS, or its output, into commerical software.
*
* We encourage users to develop software with PCCTS. However, we do ask
* that credit is given to us for developing PCCTS. By "credit",
* we mean that if you incorporate our source code into one of your
* programs (commercial product, research project, or otherwise) that you
* acknowledge this fact somewhere in the documentation, research report,
* etc... If you like PCCTS and have developed a nice tool with the
* output, please mention that you developed it using PCCTS. In
* addition, we ask that this header remain intact in our source code.
* As long as these guidelines are kept, we expect to continue enhancing
* this system and expect to make other tools available as they are
* completed.
*
* ANTLR 1.33
* Terence Parr
* Parr Research Corporation
* with Purdue University and AHPCRC, University of Minnesota
* 1989-2000
*/
#ifndef ATOKEN_H_GATE
#define ATOKEN_H_GATE
#include "pcctscfg.h"
#include "pccts_string.h"
#include "pccts_stdio.h"
#include "pccts_stdlib.h"
#include "pccts_stdarg.h" // MR23
PCCTS_NAMESPACE_STD
// MR9 RJV (JVincent@novell.com) Not needed for variable length strings
//// MR9 #ifndef ANTLRCommonTokenTEXTSIZE
//// MR9 #define ANTLRCommonTokenTEXTSIZE 100
//// MR9 #endif
/* must define what a char looks like; can make this a class too */
typedef char ANTLRChar;
/* D E F I N E S M A R T P O I N T E R S */
//#include ATOKPTR_H not tested yet, leave out
class ANTLRAbstractToken;
typedef ANTLRAbstractToken *_ANTLRTokenPtr;
class ANTLRAbstractToken {
public:
virtual ~ANTLRAbstractToken() {;}
virtual ANTLRTokenType getType() const = 0;
virtual void setType(ANTLRTokenType t) = 0;
virtual int getLine() const = 0;
virtual void setLine(int line) = 0;
virtual ANTLRChar *getText() const = 0;
virtual void setText(const ANTLRChar *) = 0;
/* This function will disappear when I can use templates */
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *text,
int line) = 0;
/* define to satisfy ANTLRTokenBuffer's need to determine whether or
not a token object can be destroyed. If nref()==0, no one has
a reference, and the object may be destroyed. This function defaults
to 1, hence, if you use deleteTokens() message with a token object
not derived from ANTLRCommonRefCountToken, the parser will compile
but will not delete objects after they leave the token buffer.
*/
virtual unsigned nref() const { return 1; } // MR11
virtual void ref() {;}
virtual void deref() {;}
virtual void panic(const char *msg) // MR20 const
{
/* MR23 */ printMessage(stderr, "ANTLRAbstractToken panic: %s\n", msg);
exit(PCCTS_EXIT_FAILURE);
}
virtual int printMessage(FILE* pFile, const char* pFormat, ...) // MR23
{
va_list marker;
va_start( marker, pFormat );
int iRet = vfprintf(pFile, pFormat, marker);
va_end( marker );
return iRet;
}
};
/* This class should be subclassed. It cannot store token type or text */
class ANTLRRefCountToken : public ANTLRAbstractToken {
public:
#ifdef DBG_REFCOUNTTOKEN
static int ctor;
static int dtor;
#endif
protected:
unsigned refcnt_;
#ifdef DBG_REFCOUNTTOKEN
char object[200];
#endif
public:
// MR23 - No matter what you do, you're hammered.
// Don't give names to formals something breaks.
// Give names to formals and don't use them it breaks.
#ifndef DBG_REFCOUNTTOKEN
ANTLRRefCountToken(ANTLRTokenType /* t MR23 */, const ANTLRChar * /* s MR23 */)
#else
ANTLRRefCountToken(ANTLRTokenType t, const ANTLRChar * s)
#endif
#ifndef DBG_REFCOUNTTOKEN
{
refcnt_ = 0;
}
#else
{
ctor++;
refcnt_ = 0;
if ( t==1 ) sprintf(object,"tok_EOF");
else sprintf(object,"tok_%s",s);
/* MR23 */ printMessage(stderr, "ctor %s #%d\n",object,ctor);
}
#endif
ANTLRRefCountToken()
#ifndef DBG_REFCOUNTTOKEN
{ refcnt_ = 0; }
#else
{
ctor++;
refcnt_ = 0;
sprintf(object,"tok_blank");
/* MR23 */ printMessage(stderr, "ctor %s #%d\n",object,ctor);
}
virtual ~ANTLRRefCountToken()
{
dtor++;
if ( dtor>ctor ) /* MR23 */ printMessage(stderr, "WARNING: dtor>ctor\n");
/* MR23 */ printMessage(stderr, "dtor %s #%d\n", object, dtor);
object[0]='\0';
}
#endif
// reference counting stuff needed by ANTLRTokenPtr.
// User should not access these; for C++ language reasons, we had
// to make these public. Yuck.
void ref() { refcnt_++; }
void deref() { refcnt_--; }
unsigned nref() const { return refcnt_; } // MR11
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType /*tt MR23*/,
ANTLRChar * /*txt MR23*/,
int /*line MR23*/)
{
panic("call to ANTLRRefCountToken::makeToken()\n");
return NULL;
}
};
class ANTLRCommonNoRefCountToken : public ANTLRAbstractToken {
protected:
ANTLRTokenType _type;
int _line;
ANTLRChar *_text; // MR9 RJV
public:
ANTLRCommonNoRefCountToken(ANTLRTokenType t, const ANTLRChar *s)
{ setType(t); _line = 0; _text = NULL; setText(s); }
ANTLRCommonNoRefCountToken()
{ setType((ANTLRTokenType)0); _line = 0; _text = NULL; setText(""); }
~ANTLRCommonNoRefCountToken() { if (_text) delete [] _text; } // MR9 RJV: Added Destructor to remove string
ANTLRTokenType getType() const { return _type; }
void setType(ANTLRTokenType t) { _type = t; }
virtual int getLine() const { return _line; }
void setLine(int line) { _line = line; }
ANTLRChar *getText() const { return _text; }
int getLength() const { return strlen(getText()); } // MR11
// MR9 RJV: Added code for variable length strings to setText()
void setText(const ANTLRChar *s)
{ if (s != _text) {
if (_text) delete [] _text;
if (s != NULL) {
_text = new ANTLRChar[strlen(s)+1];
if (_text == NULL) panic("ANTLRCommonNoRefCountToken::setText new failed");
strcpy(_text,s);
} else {
_text = new ANTLRChar[1];
if (_text == NULL) panic("ANTLRCommonNoRefCountToken::setText new failed");
strcpy(_text,"");
};
};
}
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *txt,
int line)
{
ANTLRAbstractToken *t = new ANTLRCommonNoRefCountToken;
t->setType(tt); t->setText(txt); t->setLine(line);
return t;
}
// MR9 THM Copy constructor required when heap allocated string is used with copy semantics
ANTLRCommonNoRefCountToken (const ANTLRCommonNoRefCountToken& from) :
ANTLRAbstractToken(from) {
setType(from._type);
setLine(from._line);
_text=NULL;
setText(from._text);
};
// MR9 THM operator =() required when heap allocated string is used with copy semantics
virtual ANTLRCommonNoRefCountToken& operator =(const ANTLRCommonNoRefCountToken& rhs) {
////// MR15 WatCom can't hack use of operator =()
////// Use this: *( (ANTRLAbstractToken *) this)=rhs;
*( (ANTLRAbstractToken *) this ) = rhs;
setType(rhs._type);
setLine(rhs._line);
setText(rhs._text);
return *this;
};
};
class ANTLRCommonToken : public ANTLRRefCountToken {
protected:
ANTLRTokenType _type;
int _line;
ANTLRChar *_text; // MR9 RJV:Added
public:
ANTLRCommonToken(ANTLRTokenType t, const ANTLRChar *s) : ANTLRRefCountToken(t,s)
{ setType(t); _line = 0; _text = NULL; setText(s); } // MR9
ANTLRCommonToken()
{ setType((ANTLRTokenType)0); _line = 0; _text = NULL; setText(""); } // MR9
virtual ~ANTLRCommonToken() { if (_text) delete [] _text; } // MR9 RJV: Added Destructor to remove string
ANTLRTokenType getType() const { return _type; }
void setType(ANTLRTokenType t) { _type = t; }
virtual int getLine() const { return _line; }
void setLine(int line) { _line = line; }
ANTLRChar *getText() const { return _text; }
int getLength() const { return strlen(getText()); } // MR11
// MR9 RJV: Added code for variable length strings to setText()
void setText(const ANTLRChar *s)
{ if (s != _text) {
if (_text) delete [] _text;
if (s != NULL) {
_text = new ANTLRChar[strlen(s)+1];
if (_text == NULL) panic("ANTLRCommonToken::setText new failed");
strcpy(_text,s);
} else {
_text = new ANTLRChar[1];
if (_text == NULL) panic("ANTLRCommonToken::setText new failed");
strcpy(_text,"");
};
};
}
virtual ANTLRAbstractToken *makeToken(ANTLRTokenType tt,
ANTLRChar *txt,
int line)
{
ANTLRAbstractToken *t = new ANTLRCommonToken(tt,txt);
t->setLine(line);
return t;
}
// MR9 THM Copy constructor required when heap allocated string is used with copy semantics
ANTLRCommonToken (const ANTLRCommonToken& from) :
ANTLRRefCountToken(from) {
setType(from._type);
setLine(from._line);
_text=NULL;
setText(from._text);
};
// MR9 THM operator =() required when heap allocated string is used with copy semantics
virtual ANTLRCommonToken& operator =(const ANTLRCommonToken& rhs) {
////// MR15 WatCom can't hack use of operator =()
////// Use this instead: *( (ANTRLRRefCountToken *) this)=rhs;
*( (ANTLRRefCountToken *) this) = rhs;
setType(rhs._type);
setLine(rhs._line);
setText(rhs._text);
return *this;
};
};
// used for backward compatibility
typedef ANTLRCommonToken ANTLRCommonBacktrackingToken;
#endif