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604371b98d
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1676 6f19259b-4bc3-4df7-8a09-765794883524
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* ATokPtrImpl.h (formerly ATokPtr.cpp)
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*
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* This is #included in ATokBuffer.cpp for historical reasons.
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* It has been renamed because of problems with the .cpp extension
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* when used with IDE.
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*
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*
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* ANTLRToken MUST be defined before entry to this file.
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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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* Written by Russell Quong June 30, 1995
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* Adapted by Terence Parr to ANTLR stuff
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* Parr Research Corporation
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* with Purdue University and AHPCRC, University of Minnesota
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* 1989-2000
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*/
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#include "pcctscfg.h"
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PCCTS_NAMESPACE_STD
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#include "ATokPtr.h"
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void ANTLRTokenPtr::ref() const
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{
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if (ptr_ != NULL) {
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ptr_->ref();
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}
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}
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void ANTLRTokenPtr::deref()
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{
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if (ptr_ != NULL)
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{
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ptr_->deref();
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if ( ptr_->nref()==0 )
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{
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delete ptr_;
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ptr_ = NULL;
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}
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}
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}
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ANTLRTokenPtr::~ANTLRTokenPtr()
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{
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deref();
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}
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//
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// 8-Apr-97 MR1 Make operator -> a const member function
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// as weall as some other member functions
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//
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void ANTLRTokenPtr::operator = (const ANTLRTokenPtr & lhs) // MR1
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{
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lhs.ref(); // protect against "xp = xp"; ie same underlying object
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deref();
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ptr_ = lhs.ptr_;
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}
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void ANTLRTokenPtr::operator = (ANTLRAbstractToken *addr)
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{
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if (addr != NULL) {
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addr->ref();
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}
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deref();
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ptr_ = addr;
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}
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