ASTBase.h
资源名称:pccts133.zip [点击查看]
上传用户:itx_2006
上传日期:2007-01-06
资源大小:493k
文件大小:4k
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开发平台:
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- /* Abstract syntax tree
- *
- * 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
- * 1989-1998
- */
- #ifndef ASTBase_H
- #define ASTBase_H
- #include "pcctscfg.h"
- #include PCCTS_STDIO_H
- #include PCCTS_STDLIB_H
- PCCTS_NAMESPACE_STD
- #ifndef PCCTS_NOT_USING_SOR
- #include "PCCTSAST.h"
- #endif
- /*
- * Notes:
- *
- * To specify a copy constructor, subclass one of these classes and
- * give the copy constructor. To use dup(), you must define shallowCopy().
- * shallowCopy() can use either a copy constructor or just copy the node
- * itself.
- */
- #ifdef PCCTS_NOT_USING_SOR
- class DllExportPCCTS ASTBase {
- #else
- class DllExportPCCTS ASTBase : public PCCTS_AST {
- #endif
- protected:
- ASTBase *_right, *_down;
- public:
- #ifdef PCCTS_NOT_USING_SOR
- ASTBase *right() { return _right; }
- ASTBase *down() { return _down; }
- void setRight(ASTBase *t) { _right = (ASTBase *)t; }
- void setDown(ASTBase *t) { _down = (ASTBase *)t; }
- #else
- PCCTS_AST *right() { return _right; } // define the SORCERER interface
- PCCTS_AST *down() { return _down; }
- void setRight(PCCTS_AST *t) { _right = (ASTBase *)t; }
- void setDown(PCCTS_AST *t) { _down = (ASTBase *)t; }
- #endif
- ASTBase() { _right = _down = NULL; }
- virtual ~ASTBase() { ; }
- #ifndef PCCTS_NOT_USING_SOR
- virtual ASTBase *dup();
- #endif
- void destroy();
- void preorder();
- static ASTBase *tmake(ASTBase *, ...);
- static void link(ASTBase **, ASTBase **, ASTBase **);
- void subchild(ASTBase **, ASTBase **, ASTBase **);
- void subroot(ASTBase **, ASTBase **, ASTBase **);
- virtual void preorder_action() { ; }
- virtual void preorder_before_action() { printf(" ("); }
- virtual void preorder_after_action() { printf(" )"); }
- };
- class DllExportPCCTS ASTDoublyLinkedBase : public ASTBase {
- protected:
- ASTDoublyLinkedBase *_left, *_up;
- public:
- void double_link(ASTBase *left, ASTBase *up);
- #ifndef PCCTS_NOT_USING_SOR
- virtual ASTBase *dup();
- #endif
- #ifdef PCCTS_NOT_USING_SOR
- ASTBase *left() { return _left; }
- ASTBase *up() { return _up; }
- void setLeft(ASTBase *t) { _left = (ASTDoublyLinkedBase *)t; } // MR6
- void setUp(ASTBase *t) { _up = (ASTDoublyLinkedBase *)t; } // MR6
- #else
- PCCTS_AST *left() { return _left; }
- PCCTS_AST *up() { return _up; }
- void setLeft(PCCTS_AST *t) { _left = (ASTDoublyLinkedBase *)t; } // MR6
- void setUp(PCCTS_AST *t) { _up = (ASTDoublyLinkedBase *)t; } // MR6
- #endif
- };
- class AST; // announce that this class will be coming along shortly
- #endif