3eb9473ea9
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2832 6f19259b-4bc3-4df7-8a09-765794883524
120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
/* Abstract syntax tree
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*
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* SOFTWARE RIGHTS
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*
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* We reserve no LEGAL rights to the Purdue Compiler Construction Tool
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* Set (PCCTS) -- PCCTS is in the public domain. An individual or
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* company may do whatever they wish with source code distributed with
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* PCCTS or the code generated by PCCTS, including the incorporation of
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* PCCTS, or its output, into commerical software.
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*
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* We encourage users to develop software with PCCTS. However, we do ask
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* that credit is given to us for developing PCCTS. By "credit",
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* we mean that if you incorporate our source code into one of your
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* programs (commercial product, research project, or otherwise) that you
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* acknowledge this fact somewhere in the documentation, research report,
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* etc... If you like PCCTS and have developed a nice tool with the
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* output, please mention that you developed it using PCCTS. In
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* addition, we ask that this header remain intact in our source code.
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* As long as these guidelines are kept, we expect to continue enhancing
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* this system and expect to make other tools available as they are
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* completed.
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*
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* ANTLR 1.33
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* Terence Parr
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* Parr Research Corporation
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* with Purdue University and AHPCRC, University of Minnesota
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* 1989-1998
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*/
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#ifndef ASTBase_H
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#define ASTBase_H
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#include "pcctscfg.h"
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#include "pccts_stdio.h"
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#include "pccts_stdlib.h"
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PCCTS_NAMESPACE_STD
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#ifndef PCCTS_NOT_USING_SOR
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#include "PCCTSAST.h"
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#endif
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/*
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* Notes:
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*
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* To specify a copy constructor, subclass one of these classes and
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* give the copy constructor. To use dup(), you must define shallowCopy().
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* shallowCopy() can use either a copy constructor or just copy the node
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* itself.
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*/
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#ifdef PCCTS_NOT_USING_SOR
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class DllExportPCCTS ASTBase {
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#else
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class DllExportPCCTS ASTBase : public PCCTS_AST {
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#endif
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protected:
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ASTBase *_right, *_down;
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public:
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#ifdef PCCTS_NOT_USING_SOR
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ASTBase *right() { return _right; }
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ASTBase *down() { return _down; }
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void setRight(ASTBase *t) { _right = (ASTBase *)t; }
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void setDown(ASTBase *t) { _down = (ASTBase *)t; }
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#else
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PCCTS_AST *right() { return _right; } // define the SORCERER interface
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PCCTS_AST *down() { return _down; }
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void setRight(PCCTS_AST *t) { _right = (ASTBase *)t; }
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void setDown(PCCTS_AST *t) { _down = (ASTBase *)t; }
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#endif
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ASTBase() { _right = _down = NULL; }
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virtual ~ASTBase() { ; }
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#ifndef PCCTS_NOT_USING_SOR
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virtual ASTBase *dup();
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#endif
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void destroy();
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void preorder();
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static ASTBase *tmake(ASTBase *, ...);
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static void link(ASTBase **, ASTBase **, ASTBase **);
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void subchild(ASTBase **, ASTBase **, ASTBase **);
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void subroot(ASTBase **, ASTBase **, ASTBase **);
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virtual void preorder_action() { ; }
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virtual void preorder_before_action() { printf(" ("); }
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virtual void preorder_after_action() { printf(" )"); }
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virtual void panic(const char *msg); /* MR21 */
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virtual void reportOverwriteOfDownPointer(); /* MR21 */
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};
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class DllExportPCCTS ASTDoublyLinkedBase : public ASTBase {
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protected:
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ASTDoublyLinkedBase *_left, *_up;
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public:
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void double_link(ASTBase *left, ASTBase *up);
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#ifndef PCCTS_NOT_USING_SOR
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virtual ASTBase *dup();
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#endif
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#ifdef PCCTS_NOT_USING_SOR
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ASTBase *left() { return _left; }
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ASTBase *up() { return _up; }
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void setLeft(ASTBase *t) { _left = (ASTDoublyLinkedBase *)t; } // MR6
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void setUp(ASTBase *t) { _up = (ASTDoublyLinkedBase *)t; } // MR6
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#else
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PCCTS_AST *left() { return _left; }
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PCCTS_AST *up() { return _up; }
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void setLeft(PCCTS_AST *t) { _left = (ASTDoublyLinkedBase *)t; } // MR6
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void setUp(PCCTS_AST *t) { _up = (ASTDoublyLinkedBase *)t; } // MR6
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#endif
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};
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class AST; // announce that this class will be coming along shortly
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#endif
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