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// Copyright (c) 2009 libmv authors.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
#ifndef LIBMV_BASE_SCOPED_PTR_H
#define LIBMV_BASE_SCOPED_PTR_H
namespace libmv {
/**
* A handle for a heap-allocated resource that should be freed when it goes out
* of scope. This looks similar to the one found in TR1.
*/
template<typename T>
class scoped_ptr {
public:
scoped_ptr(T *resource) : resource_(resource) {}
~scoped_ptr() { reset(0); }
T *get() const { return resource_; }
T *operator->() const { return resource_; }
T &operator*() const { return *resource_; }
void reset(T *new_resource) {
if (sizeof(T)) {
delete resource_;
}
resource_ = new_resource;
}
T *release() {
T *released_resource = resource_;
resource_ = 0;
return released_resource;
}
private:
// No copying allowed.
T *resource_;
};
} // namespace libmv
#endif // LIBMV_BASE_SCOPED_PTR_H
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