Internal.h

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00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
00005 //
00006 // This software is provided 'as-is', without any express or implied warranty.
00007 // In no event will the authors be held liable for any damages arising from the use of this software.
00008 //
00009 // Permission is granted to anyone to use this software for any purpose,
00010 // including commercial applications, and to alter it and redistribute it freely,
00011 // subject to the following restrictions:
00012 //
00013 // 1. The origin of this software must not be misrepresented;
00014 //    you must not claim that you wrote the original software.
00015 //    If you use this software in a product, an acknowledgment
00016 //    in the product documentation would be appreciated but is not required.
00017 //
00018 // 2. Altered source versions must be plainly marked as such,
00019 //    and must not be misrepresented as being the original software.
00020 //
00021 // 3. This notice may not be removed or altered from any source distribution.
00022 //
00024 
00025 
00027 // Define macros to check the validity of CSFML objects
00028 // in debug run
00030 #include <stdio.h>
00031 
00032 #ifndef NDEBUG
00033 
00034     #define CSFML_CHECK(Object) \
00035                 if (Object == NULL) \
00036                 { \
00037                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00038                     return; \
00039                 }
00040 
00041     #define CSFML_CALL(Object, Function) \
00042                 if (Object) \
00043                 { \
00044                     (Object->This.Function); \
00045                 } \
00046                 else \
00047                 { \
00048                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00049                 } \
00050 
00051     #define CSFML_CALL_PTR(Object, Function) \
00052                 if (Object) \
00053                 { \
00054                     (Object->This->Function); \
00055                 } \
00056                 else \
00057                 { \
00058                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00059                 } \
00060 
00061     #define CSFML_CHECK_RETURN(Object, Default) \
00062                 if (Object == NULL) \
00063                 { \
00064                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00065                     return Default; \
00066                 }
00067 
00068     #define CSFML_CALL_RETURN(Object, Function, Default) \
00069                 if (Object) \
00070                 { \
00071                     return (Object->This.Function); \
00072                 } \
00073                 else \
00074                 { \
00075                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00076                     return Default; \
00077                 } \
00078 
00079     #define CSFML_CALL_PTR_RETURN(Object, Function, Default) \
00080                 if (Object) \
00081                 { \
00082                     return (Object->This->Function); \
00083                 } \
00084                 else \
00085                 { \
00086                     fprintf(stderr, "SFML warning : trying to use a null " #Object " object\n"); \
00087                     return Default; \
00088                 } \
00089 
00090 #else
00091 
00092     #define CSFML_CHECK(Object)
00093 
00094     #define CSFML_CALL(Object, Function) (Object->This.Function);
00095 
00096     #define CSFML_CALL_PTR(Object, Function) (Object->This->Function);
00097 
00098     #define CSFML_CHECK_RETURN(Object, Default)
00099 
00100     #define CSFML_CALL_RETURN(Object, Function, Default) return (Object->This.Function);
00101 
00102     #define CSFML_CALL_PTR_RETURN(Object, Function, Default) return (Object->This->Function);
00103 
00104 #endif