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- /*
- * ATokPtrImpl.h (formerly ATokPtr.cpp)
- *
- * This is #included in ATokBuffer.cpp for historical reasons.
- * It has been renamed because of problems with the .cpp extension
- * when used with IDE.
- *
- *
- * ANTLRToken MUST be defined before entry to this file.
- *
- * 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
- */
- #include "pcctscfg.h"
- PCCTS_NAMESPACE_STD
- #include "ATokPtr.h"
- void ANTLRTokenPtr::ref() const
- {
- if (ptr_ != NULL) {
- ptr_->ref();
- }
- }
- void ANTLRTokenPtr::deref()
- {
- if (ptr_ != NULL)
- {
- ptr_->deref();
- if ( ptr_->nref()==0 )
- {
- delete ptr_;
- ptr_ = NULL;
- }
- }
- }
- ANTLRTokenPtr::~ANTLRTokenPtr()
- {
- deref();
- }
- //
- // 8-Apr-97 MR1 Make operator -> a const member function
- // as well as some other member functions
- //
- ANTLRTokenPtr& ANTLRTokenPtr::operator = (const ANTLRTokenPtr & lhs) // MR1
- {
- lhs.ref(); // protect against "xp = xp"; ie same underlying object
- deref();
- ptr_ = lhs.ptr_;
- return *this;
- }
- ANTLRTokenPtr& ANTLRTokenPtr::operator = (ANTLRAbstractToken *addr)
- {
- if (addr != NULL) {
- addr->ref();
- }
- deref();
- ptr_ = addr;
- return *this;
- }
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