/usr/include/antlr/ASTRefCount.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 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | #ifndef INC_ASTRefCount_hpp__
# define INC_ASTRefCount_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/ASTRefCount.hpp#2 $
*/
# include <antlr/config.hpp>
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
class AST;
struct ANTLR_API ASTRef
{
AST* const ptr;
unsigned int count;
ASTRef(AST* p);
~ASTRef();
ASTRef* increment()
{
++count;
return this;
}
bool decrement()
{
return (--count==0);
}
static ASTRef* getRef(const AST* p);
private:
ASTRef( const ASTRef& );
ASTRef& operator=( const ASTRef& );
};
template<class T>
class ANTLR_API ASTRefCount
{
private:
ASTRef* ref;
public:
ASTRefCount(const AST* p=0)
: ref(p ? ASTRef::getRef(p) : 0)
{
}
ASTRefCount(const ASTRefCount<T>& other)
: ref(other.ref ? other.ref->increment() : 0)
{
}
~ASTRefCount()
{
if (ref && ref->decrement())
delete ref;
}
ASTRefCount<T>& operator=(AST* other)
{
ASTRef* tmp = ASTRef::getRef(other);
if (ref && ref->decrement())
delete ref;
ref=tmp;
return *this;
}
ASTRefCount<T>& operator=(const ASTRefCount<T>& other)
{
if( other.ref != ref )
{
ASTRef* 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 ASTRefCount<AST> RefAST;
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
#endif //INC_ASTRefCount_hpp__
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