Add scoped_ptr.h

Originally committed to SVN as r4902.
This commit is contained in:
Thomas Goyne 2010-12-07 19:09:37 +00:00
parent 6d2b941e76
commit 0e6d8631fd
2 changed files with 58 additions and 0 deletions

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@ -449,6 +449,10 @@
RelativePath="..\..\libaegisub\include\libaegisub\path.h"
>
</File>
<File
RelativePath="..\..\libaegisub\include\libaegisub\scoped_ptr.h"
>
</File>
<File
RelativePath="..\..\libaegisub\include\libaegisub\signals.h"
>

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@ -0,0 +1,54 @@
// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// $Id$
/// @file scoped_ptr.h
/// @brief
/// @ingroup libaegisub
#pragma once
namespace agi {
/// @class scoped_ptr
/// @brief auto_ptr without the transfer of ownership semantics
template<class T>
class scoped_ptr {
T* ptr;
scoped_ptr(scoped_ptr const&);
scoped_ptr& operator=(scoped_ptr const&);
public:
typedef T element_type;
T& operator*() const {return *ptr; }
T* operator->() const { return ptr; }
T* get() const { return ptr; }
void reset(T *p = NULL) {
delete ptr;
ptr = p;
}
void swap(scoped_ptr &b) { using std::swap; swap(ptr, b.ptr); }
scoped_ptr(T *ptr = NULL) : ptr(ptr){ }
~scoped_ptr() { delete ptr; }
};
template<class T>
inline void swap(scoped_ptr<T> &a, scoped_ptr<T> &b) {
a.swap(b);
}
}