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/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/license.html
*
* $Id$
*/
#include "antlr/ASTRefCount.hpp"
#include "antlr/AST.hpp"
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
ASTRef::ASTRef(AST* p)
: ptr(p), count(1)
{
if (p && !p->ref)
p->ref = this;
}
ASTRef::~ASTRef()
{
delete ptr;
}
ASTRef* ASTRef::getRef(const AST* p)
{
if (p) {
AST* pp = const_cast<AST*>(p);
if (pp->ref)
return pp->ref->increment();
else
return new ASTRef(pp);
} else
return 0;
}
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
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