+++ /dev/null
-#ifndef INC_TokenRefCount_hpp__
-# define INC_TokenRefCount_hpp__
-
-/* ANTLR Translator Generator
- * Project led by Terence Parr at http://www.jGuru.com
- * Software rights: http://www.antlr.org/license.html
- *
- * $Id:$
- */
-
-# include <antlr/config.hpp>
-
-#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
-namespace antlr {
-#endif
-
-class Token;
-
-struct ANTLR_API TokenRef
-{
- Token* const ptr;
- unsigned int count;
-
- TokenRef(Token* p);
- ~TokenRef();
- TokenRef* increment()
- {
- ++count;
- return this;
- }
- bool decrement()
- {
- return (--count==0);
- }
-
- static TokenRef* getRef(const Token* p);
-private:
- TokenRef( const TokenRef& );
- TokenRef& operator=( const TokenRef& );
-};
-
-template<class T>
- class ANTLR_API TokenRefCount
-{
-private:
- TokenRef* ref;
-
-public:
- TokenRefCount(const Token* p=0)
- : ref(p ? TokenRef::getRef(p) : 0)
- {
- }
- TokenRefCount(const TokenRefCount<T>& other)
- : ref(other.ref ? other.ref->increment() : 0)
- {
- }
- ~TokenRefCount()
- {
- if (ref && ref->decrement())
- delete ref;
- }
- TokenRefCount<T>& operator=(Token* other)
- {
- TokenRef* tmp = TokenRef::getRef(other);
-
- if (ref && ref->decrement())
- delete ref;
-
- ref=tmp;
-
- return *this;
- }
- TokenRefCount<T>& operator=(const TokenRefCount<T>& other)
- {
- if( other.ref != ref )
- {
- TokenRef* tmp = other.ref ? other.ref->increment() : 0;
-
- if (ref && ref->decrement())
- delete ref;
-
- ref=tmp;
- }
- return *this;
- }
-
- operator T* () const { return ref ? static_cast<T*>(ref->ptr) : 0; }
- T* operator->() const { return ref ? static_cast<T*>(ref->ptr) : 0; }
- T* get() const { return ref ? static_cast<T*>(ref->ptr) : 0; }
-};
-
-typedef TokenRefCount<Token> RefToken;
-
-#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
-}
-#endif
-
-#endif //INC_TokenRefCount_hpp__