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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
* 1989-2000
*/
#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)
ANTLRTokenPtr& operator = (const ANTLRTokenPtr & lhs); // MR1
ANTLRTokenPtr& 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
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