ATokPtr.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:3k
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- /* ATokPtr.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
- * Written by Russell Quong June 30, 1995
- * Adapted by Terence Parr to ANTLR stuff
- * Parr Research Corporation
- * with Purdue University and AHPCRC, University of Minnesota
- * 1989-1998
- */
- #ifndef ATokPtr_h
- #define ATokPtr_h
- #include "pcctscfg.h"
- #include PCCTS_STDIO_H
- PCCTS_NAMESPACE_STD
- // pointer to a reference counted object
- // robust in that an unused ANTLRTokenPtr can point to NULL.
- class ANTLRAbstractToken;
- class DllExportPCCTS ANTLRTokenPtr {
- public:
- ANTLRTokenPtr(ANTLRAbstractToken *addr=NULL){ptr_ = addr; ref();}
- ANTLRTokenPtr(const ANTLRTokenPtr &lhs) {ptr_ = lhs.ptr_; lhs.ref();}
- ~ANTLRTokenPtr();
- // use ANTLRTokenPtr as a pointer to ANTLRToken
- //
- // 8-Apr-97 MR1 Make operator -> a const member function
- // as well as some other member functions
- //
- ANTLRAbstractToken *operator-> () const { return ptr_; } // MR1
- //
- // 7-Apr-97 133MR1
- // Fix suggested by Andreas Magnusson
- // (Andreas.Magnusson@mailbox.swipnet.se)
- void operator = (const ANTLRTokenPtr & lhs); // MR1
- void operator = (ANTLRAbstractToken *addr);
- int operator != (const ANTLRTokenPtr &q) const // MR1 // MR11 unsigned -> int
- { return this->ptr_ != q.ptr_; }
- int operator == (const ANTLRTokenPtr &q) const // MR1 // MR11 unsigned -> int
- { return this->ptr_ == q.ptr_; }
- int operator == (const ANTLRAbstractToken *addr) const // MR11
- { return this->ptr_ == addr; }
- int operator != (const ANTLRAbstractToken *addr) const // MR11
- { return this->ptr_ != addr; }
- void ref() const;
- void deref();
- protected:
- ANTLRAbstractToken *ptr_;
- };
- //typedef ANTLRTokenPtr _ANTLRTokenPtr;
- /*
- * Since you cannot redefine operator->() to return one of the user's
- * token object types, we must down cast. This is a drag. Here's
- * a macro that helps. template: "mytoken(a-smart-ptr)->myfield".
- */
- #define mytoken(tk) ((ANTLRToken *)(tk.operator->()))
- #endif