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/*
Copyright (C) 2009 Ricardo Pescuma Domenecci
This is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this file; see the file license.txt. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __SCOPE_H__
# define __SCOPE_H__
#define DEFINE_SCOPED_TYPE(_NAME_, _DELETE_) \
template<class T> \
class _NAME_ \
{ \
_NAME_(_NAME_ &); \
_NAME_ & operator=(_NAME_ &); \
\
public: \
_NAME_(T *t = NULL) : p(t) {} \
\
~_NAME_() \
{ \
release(); \
} \
\
T * operator=(T *t) \
{ \
release(); \
p = t; \
return t; \
} \
\
operator T*() const \
{ \
return p; \
} \
\
bool operator==(T *t) const \
{ \
return p == t; \
} \
\
bool operator!=(T *t) const \
{ \
return p != t; \
} \
\
T *get() const \
{ \
return p; \
} \
\
void release() \
{ \
if (p != NULL) \
dealoc(p); \
p = NULL; \
} \
\
T* detach() \
{ \
T *ret = p; \
p = NULL; \
return ret; \
} \
\
protected: \
T *p; \
\
void dealoc(T *ptr) \
{ \
_DELETE_; \
} \
}; \
\
template<typename T> \
inline bool operator==(T* p, const _NAME_<T> &b) { \
return p == b.get(); \
} \
\
template<typename T> \
inline bool operator!=(T* p, const _NAME_<T> &b) { \
return p != b.get(); \
}
DEFINE_SCOPED_TYPE(scoped_ptr, delete ptr)
DEFINE_SCOPED_TYPE(scoped_array, delete[] ptr)
DEFINE_SCOPED_TYPE(scoped_free, free(ptr))
DEFINE_SCOPED_TYPE(scoped_mir_free, mir_free(ptr))
#endif // __SCOPE_H__
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