ANTLR Support Libraries 2.7.1+
Loading...
Searching...
No Matches
TokenRefCount.hpp
Go to the documentation of this file.
1#ifndef INC_TokenRefCount_hpp__
2# define INC_TokenRefCount_hpp__
3
4/* ANTLR Translator Generator
5 * Project led by Terence Parr at http://www.jGuru.com
6 * Software rights: http://www.antlr.org/license.html
7 *
8 * $Id:$
9 */
10
11# include <antlr/config.hpp>
12
13#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
14namespace antlr {
15#endif
16
17class Token;
18
20{
21 Token* const ptr;
22 unsigned int count;
23
25 ~TokenRef();
27 {
28 ++count;
29 return this;
30 }
31 bool decrement()
32 {
33 return (--count==0);
34 }
35
36 static TokenRef* getRef(const Token* p);
37private:
38 TokenRef( const TokenRef& );
40};
41
42template<class T>
44{
45private:
47
48public:
50 : ref(p ? TokenRef::getRef(p) : 0)
51 {
52 }
54 : ref(other.ref ? other.ref->increment() : 0)
55 {
56 }
58 {
59 if (ref && ref->decrement())
60 delete ref;
61 }
63 {
65
66 if (ref && ref->decrement())
67 delete ref;
68
69 ref=tmp;
70
71 return *this;
72 }
74 {
75 if( other.ref != ref )
76 {
77 TokenRef* tmp = other.ref ? other.ref->increment() : 0;
78
79 if (ref && ref->decrement())
80 delete ref;
81
82 ref=tmp;
83 }
84 return *this;
85 }
86
87 operator T* () const { return ref ? static_cast<T*>(ref->ptr) : 0; }
88 T* operator->() const { return ref ? static_cast<T*>(ref->ptr) : 0; }
89 T* get() const { return ref ? static_cast<T*>(ref->ptr) : 0; }
90};
91
93
94#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
95}
96#endif
97
98#endif //INC_TokenRefCount_hpp__
TokenRefCount< Token > RefToken
Definition TokenRefCount.hpp:92
Definition RefCount.hpp:17
struct RefCount::Ref * ref
Definition TokenRefCount.hpp:44
TokenRefCount< T > & operator=(Token *other)
Definition TokenRefCount.hpp:62
TokenRef * ref
Definition TokenRefCount.hpp:46
TokenRefCount(const TokenRefCount< T > &other)
Definition TokenRefCount.hpp:53
T * operator->() const
Definition TokenRefCount.hpp:88
TokenRefCount< T > & operator=(const TokenRefCount< T > &other)
Definition TokenRefCount.hpp:73
TokenRefCount(const Token *p=0)
Definition TokenRefCount.hpp:49
~TokenRefCount()
Definition TokenRefCount.hpp:57
T * get() const
Definition TokenRefCount.hpp:89
Definition Token.hpp:25
#define ANTLR_API
Definition config.hpp:22
Definition ANTLRException.hpp:15
Definition TokenRefCount.hpp:20
static TokenRef * getRef(const Token *p)
Definition TokenRefCount.cpp:26
TokenRef & operator=(const TokenRef &)
TokenRef(const TokenRef &)
Token *const ptr
Definition TokenRefCount.hpp:21
TokenRef * increment()
Definition TokenRefCount.hpp:26
unsigned int count
Definition TokenRefCount.hpp:22
bool decrement()
Definition TokenRefCount.hpp:31