d2ca522cca
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@1115 7ec92016-0320-0410-acc4-a06ded1c099a
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
// The Loki Library
|
|
// Copyright (c) 2006 Richard Sposato
|
|
// Copyright (c) 2006 Peter Kümmel
|
|
// Code covered by the MIT License
|
|
//
|
|
// 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 LOKI_REFTOVALUE_INC_
|
|
#define LOKI_REFTOVALUE_INC_
|
|
|
|
// $Id$
|
|
|
|
|
|
namespace Loki
|
|
{
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// \class RefToValue
|
|
///
|
|
/// \ingroup SmartPointerGroup
|
|
/// Transports a reference as a value
|
|
/// Serves to implement the Colvin/Gibbons trick for SmartPtr/ScopeGuard
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
template <class T>
|
|
class RefToValue
|
|
{
|
|
public:
|
|
|
|
RefToValue(T& ref) : ref_(ref)
|
|
{}
|
|
|
|
RefToValue(const RefToValue& rhs) : ref_(rhs.ref_)
|
|
{}
|
|
|
|
operator T& () const
|
|
{
|
|
return ref_;
|
|
}
|
|
|
|
private:
|
|
// Disable - not implemented
|
|
RefToValue();
|
|
RefToValue& operator=(const RefToValue&);
|
|
|
|
T& ref_;
|
|
};
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// \ingroup ExceptionGroup
|
|
/// RefToValue creator.
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
template <class T>
|
|
inline RefToValue<T> ByRef(T& t)
|
|
{
|
|
return RefToValue<T>(t);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
#endif // end file guardian
|
|
|