/usr/include/antlr/RefCount.hpp is in libantlr-dev 2.7.7+dfsg-9.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | #ifndef INC_RefCount_hpp__
#define INC_RefCount_hpp__
/* ANTLR Translator Generator
* Project led by Terence Parr at http://www.jGuru.com
* Software rights: http://www.antlr.org/license.html
*
* $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/RefCount.hpp#2 $
*/
#include <antlr/config.hpp>
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
template<class T>
class ANTLR_API RefCount {
private:
struct Ref {
T* const ptr;
unsigned int count;
Ref(T* p) : ptr(p), count(1) {}
~Ref() {delete ptr;}
Ref* increment() {++count;return this;}
bool decrement() {return (--count==0);}
private:
Ref(const Ref&);
Ref& operator=(const Ref&);
}* ref;
public:
explicit RefCount(T* p = 0)
: ref(p ? new Ref(p) : 0)
{
}
RefCount(const RefCount<T>& other)
: ref(other.ref ? other.ref->increment() : 0)
{
}
~RefCount()
{
if (ref && ref->decrement())
delete ref;
}
RefCount<T>& operator=(const RefCount<T>& other)
{
Ref* tmp = other.ref ? other.ref->increment() : 0;
if (ref && ref->decrement())
delete ref;
ref = tmp;
return *this;
}
operator T* () const
{
return ref ? ref->ptr : 0;
}
T* operator->() const
{
return ref ? ref->ptr : 0;
}
T* get() const
{
return ref ? ref->ptr : 0;
}
template<class newType> operator RefCount<newType>()
{
return RefCount<newType>(ref);
}
};
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
#endif //INC_RefCount_hpp__
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