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/*
* Created by Phil on 02/05/2012.
* Copyright 2012 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_PTR_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_PTR_HPP_INCLUDED
#include "catch_common.h"
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wpadded"
#endif
namespace Catch {
// An intrusive reference counting smart pointer.
// T must implement addRef() and release() methods
// typically implementing the IShared interface
template<typename T>
class Ptr {
public:
Ptr() : m_p( CATCH_NULL ){}
Ptr( T* p ) : m_p( p ){
if( m_p )
m_p->addRef();
}
Ptr( Ptr const& other ) : m_p( other.m_p ){
if( m_p )
m_p->addRef();
}
~Ptr(){
if( m_p )
m_p->release();
}
void reset() {
if( m_p )
m_p->release();
m_p = CATCH_NULL;
}
Ptr& operator = ( T* p ){
Ptr temp( p );
swap( temp );
return *this;
}
Ptr& operator = ( Ptr const& other ){
Ptr temp( other );
swap( temp );
return *this;
}
void swap( Ptr& other ) { std::swap( m_p, other.m_p ); }
T* get() const{ return m_p; }
T& operator*() const { return *m_p; }
T* operator->() const { return m_p; }
bool operator !() const { return m_p == CATCH_NULL; }
operator SafeBool::type() const { return SafeBool::makeSafe( m_p != CATCH_NULL ); }
private:
T* m_p;
};
struct IShared : NonCopyable {
virtual ~IShared();
virtual void addRef() const = 0;
virtual void release() const = 0;
};
template<typename T = IShared>
struct SharedImpl : T {
SharedImpl() : m_rc( 0 ){}
virtual void addRef() const {
++m_rc;
}
virtual void release() const {
if( --m_rc == 0 )
delete this;
}
mutable unsigned int m_rc;
};
} // end namespace Catch
#ifdef __clang__
#pragma clang diagnostic pop
#endif
#endif // TWOBLUECUBES_CATCH_PTR_HPP_INCLUDED
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