138 lines
3.0 KiB
C
138 lines
3.0 KiB
C
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// Copyright (C) 2007 Id Software, Inc.
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//
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#ifndef __AUTOPTR_H__
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#define __AUTOPTR_H__
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/*
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============
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A pointer template class that deletes its pointee when it is destroyed
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Not intended for use in containers
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An assignment causes the RHS to release its pointer, ie the pointee is only be owned by one sdAutoPtr at a time
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============
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*/
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#ifdef _DEBUG
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template< class T, class CleanupPolicy = sdDefaultCleanupPolicy< T >, class CheckingPolicy = sdNULLPtrCheck< T > >
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#else
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template< class T, class CleanupPolicy = sdDefaultCleanupPolicy< T >, class CheckingPolicy = sdNoPtrCheck< T > >
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#endif
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class sdAutoPtr {
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public:
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typedef CleanupPolicy cleanupPolicy;
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typedef CheckingPolicy checkingPolicy;
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explicit sdAutoPtr( T* p = NULL ) :
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Pointee ( p )
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#ifdef _DEBUG
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,size( 0 )
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#endif
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{ ; }
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~sdAutoPtr() { cleanupPolicy::Free( Pointee ); }
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sdAutoPtr( sdAutoPtr< T, CleanupPolicy, CheckingPolicy >& rhs ) {
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Pointee = rhs.Release();
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#ifdef _DEBUG
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size = rhs.size;
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#endif
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}
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sdAutoPtr< T, CleanupPolicy, CheckingPolicy >& operator=( sdAutoPtr< T, CleanupPolicy, CheckingPolicy >& rhs ) {
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if ( &rhs != this ) {
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#ifdef _DEBUG
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Reset( rhs.Release(), rhs.size );
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#else
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Reset( rhs.Release() );
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#endif
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}
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return (*this);
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}
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T& operator[]( size_t index ) {
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checkingPolicy::Check( Pointee );
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#ifdef _DEBUG
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if( size != 0 && ( index >= size ) ) {
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idLib::Error( "Index '%u' out of range '%u'", index, size );
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}
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#endif
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return Get()[ index ];
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}
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const T& operator[]( size_t index ) const {
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checkingPolicy::Check( Pointee );
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#ifdef _DEBUG
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if( size != 0 && ( index >= size ) ) {
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idLib::Error( "Index '%u' out of range '%u'", index, size );
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}
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#endif
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return Get()[ index ];
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}
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bool IsValid() const { return Pointee != NULL; }
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T* operator->() { checkingPolicy::Check( Pointee ); return Get(); }
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const T* operator->() const { checkingPolicy::Check( Pointee ); return Get(); }
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T& operator*() { checkingPolicy::Check( Pointee ); return *Get(); }
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const T& operator*() const { checkingPolicy::Check( Pointee ); return *Get(); }
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T* Get() { return Pointee; }
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const T* Get() const { return Pointee; }
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/*
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============
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Release
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============
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*/
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T* Release() {
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T* tmp = Pointee;
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Pointee = NULL;
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return tmp;
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}
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/*
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============
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Reset
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============
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*/
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#ifdef _DEBUG
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void Reset( T* p = NULL, size_t size = 0 ) {
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this->size = size;
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#else
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void Reset( T* p = NULL ) {
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#endif
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if( p != Pointee ) {
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cleanupPolicy::Free( Pointee );
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}
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Pointee = p;
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}
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/*
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============
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Reset
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============
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*/
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template< class U >
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#ifdef _DEBUG
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void Reset( U* p = NULL, size_t size = 0 ) {
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this->size = size;
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#else
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void Reset( U* p = NULL ) {
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#endif
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if( p != Pointee ) {
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cleanupPolicy::Free( Pointee );
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}
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Pointee = p;
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}
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private:
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T* Pointee;
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#ifdef _DEBUG
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size_t size;
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#endif
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};
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#endif //__AUTOPTR_H__
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