Torque2D/engine/source/memory/safeDelete.h

//-----------------------------------------------------------------------------
// Copyright (c) 2013 GarageGames, LLC
//
// 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
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------

/// @addtogroup utility_macros Utility Macros
// @{

#undef  SAFE_DELETE

//////////////////////////////////////////////////////////////////////////
/// @brief Safely delete an object and set the pointer to NULL
/// 
/// @param a Object to delete
/// @see #SAFE_DELETE_ARRAY(), #SAFE_DELETE_OBJECT(), #SAFE_FREE(), #SAFE_FREE_REFERENCE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_DELETE(a) if( (a) != NULL ) delete (a); (a) = NULL;

#undef  SAFE_DELETE_ARRAY

//////////////////////////////////////////////////////////////////////////
/// @brief Safely delete an array and set the pointer to NULL
/// 
/// @param a Array to delete
/// @see #SAFE_DELETE(), #SAFE_DELETE_OBJECT(), #SAFE_FREE(), #SAFE_FREE_REFERENCE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_DELETE_ARRAY(a) if( (a) != NULL ) delete [] (a); (a) = NULL;

#undef  SAFE_DELETE_OBJECT

//////////////////////////////////////////////////////////////////////////
/// @brief Safely delete a SimObject and set the pointer to NULL
/// 
/// @param a Object to delete
/// @see #SAFE_DELETE_ARRAY(), #SAFE_DELETE(), #SAFE_FREE(), #SAFE_FREE_REFERENCE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_DELETE_OBJECT(a) if( (a) != NULL ) (a)->deleteObject(); (a) = NULL;

#undef  SAFE_FREE

//////////////////////////////////////////////////////////////////////////
/// @brief Safely free memory and set the pointer to NULL
/// 
/// @param a Pointer to memory to free
/// @see #SAFE_DELETE_ARRAY(), #SAFE_DELETE_OBJECT(), #SAFE_DELETE(), #SAFE_FREE_REFERENCE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_FREE(a)   if( (a) != NULL ) dFree ((void *)a); (a) = NULL;

#undef  SAFE_FREE_REFERENCE

//////////////////////////////////////////////////////////////////////////
/// @brief Safely free a reference to a Message and set the pointer to NULL
/// 
/// @param a Pointer to message to free
/// @see #SAFE_DELETE_ARRAY(), #SAFE_DELETE_OBJECT(), #SAFE_FREE(), #SAFE_DELETE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_FREE_REFERENCE(a)   if((a) != NULL) (a)->freeReference(); (a) = NULL;

#undef  SAFE_DELETE_MESSAGE

//////////////////////////////////////////////////////////////////////////
/// @brief Synonym for SAFE_FREE_REFERENCE()
/// 
/// @param a Object to delete
/// @see #SAFE_DELETE(), #SAFE_DELETE_ARRAY(), #SAFE_DELETE_OBJECT(), #SAFE_FREE(), #SAFE_FREE_REFERENCE()
//////////////////////////////////////////////////////////////////////////
#define SAFE_DELETE_MESSAGE   SAFE_FREE_REFERENCE

// @}