| 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 |
* $Id$ |
| 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 |
|
