libsecurity_codesigning/antlr2/src/ASTRefCount.cpp

   1 /* ANTLR Translator Generator
   2  * Project led by Terence Parr at http://www.jGuru.com
   3  * Software rights: http://www.antlr.org/license.html
   4  *
   5  * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/src/ASTRefCount.cpp#2 $
   6  */
   7 #include "antlr/ASTRefCount.hpp"
   8 #include "antlr/AST.hpp"
   9
  10 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
  11 namespace antlr {
  12 #endif
  13
  14 ASTRef::ASTRef(AST* p)
  15 : ptr(p), count(1)
  16 {
  17         if (p && !p->ref)
  18                 p->ref = this;
  19 }
  20
  21 ASTRef::~ASTRef()
  22 {
  23         delete ptr;
  24 }
  25
  26 ASTRef* ASTRef::getRef(const AST* p)
  27 {
  28         if (p) {
  29                 AST* pp = const_cast<AST*>(p);
  30                 if (pp->ref)
  31                         return pp->ref->increment();
  32                 else
  33                         return new ASTRef(pp);
  34         } else
  35                 return 0;
  36 }
  37
  38 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
  39 }
  40 #endif
  41