/* | |
* 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 weall as some other member functions | |
// | |
void ANTLRTokenPtr::operator = (const ANTLRTokenPtr & lhs) // MR1 | |
{ | |
lhs.ref(); // protect against "xp = xp"; ie same underlying object | |
deref(); | |
ptr_ = lhs.ptr_; | |
} | |
void ANTLRTokenPtr::operator = (ANTLRAbstractToken *addr) | |
{ | |
if (addr != NULL) { | |
addr->ref(); | |
} | |
deref(); | |
ptr_ = addr; | |
} |