X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ffg_callback_macros.h;h=a5fa7b58a1ee9f876f34d24bb24adf9ac2190434;hb=6fb95d62db737e13993561fe07f68bd8645409c2;hp=1c70587f9e3fc4ec008540a22d0967493393b851;hpb=753583368738a67f00d8f27adb1c8b6cff4bdfd3;p=freeglut diff --git a/src/fg_callback_macros.h b/src/fg_callback_macros.h index 1c70587..a5fa7b5 100644 --- a/src/fg_callback_macros.h +++ b/src/fg_callback_macros.h @@ -32,50 +32,6 @@ #error "fg_internal.h needs to be included before this header" #endif -#if 0 /* old. Remove once other testing is complete */ -/* - * EXPAND_WCB() is used as: - * - * EXPAND_WCB arg_list - * - * ... where {(arg_list)} is the parameter list. - * - * This will take the arg_list and extend it by one argument, adding - * the argument "userData" to the end of the list. - * - * All additional args are to get around trailing ',', argument counts, - * and not needing a GCC extension to make this work. - * - * Minor modification of: - * http://stackoverflow.com/questions/5355241/generating-function-declaration-using-a-macro-iteration/5355946#5355946 - * - * Supports up to five arguments - */ - -/* GCC-specific design that doesn't require per-callback defines */ - -#define PP_HAS_ARGS_IMPL2(_0, _1, _2, _3, _4, _5, N, ...) N -#define PP_HAS_ARGS_SOURCE() \ - ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ONE_OR_MORE, ZERO - -#define PP_HAS_ARGS_IMPL(...) \ - PP_HAS_ARGS_IMPL2(__VA_ARGS__) -#define PP_HAS_ARGS(...) \ - PP_HAS_ARGS_IMPL(NOT_EXIST, ##__VA_ARGS__, PP_HAS_ARGS_SOURCE()) - -#define EXPAND_WCB_ZERO(x) \ - (userData) -#define EXPAND_WCB_ONE_OR_MORE(...) \ - (__VA_ARGS__, userData) - -#define EXPAND_WCB_DISAMBIGUATE2(has_args, ...) \ - EXPAND_WCB_ ## has_args (__VA_ARGS__) -#define EXPAND_WCB_DISAMBIGUATE(has_args, ...) \ - EXPAND_WCB_DISAMBIGUATE2(has_args, __VA_ARGS__) -#define EXPAND_WCB(...) \ - EXPAND_WCB_DISAMBIGUATE(PP_HAS_ARGS(__VA_ARGS__), __VA_ARGS__) -#endif - /* * Compiler defines: * FG_COMPILER_SUPPORTS_GCC_VA_ARGS_HACK: if the compiler supports GCC's varadic macro implementation (AKA, ##__VA_ARGS__) @@ -125,7 +81,8 @@ #define EXPAND_WCB_ZERO(args, userData) ( userData ) #define EXPAND_WCB_ONE_OR_MORE(args, userData) ( EXPAND_WCB_UNPARAN args, userData ) -#define EXPAND_WCB_DISAMBIGUATE(has_args, args, userData) EXPAND_WCB_ ## has_args ( args, userData ) +#define EXPAND_WCB_DISAMBIGUATE2(has_args, args, userData) EXPAND_WCB_ ## has_args ( args, userData ) +#define EXPAND_WCB_DISAMBIGUATE(has_args, args, userData) EXPAND_WCB_DISAMBIGUATE2( has_args, args, userData ) #define EXPAND_WCB_UNWRAP_ARGS2(args, userData) EXPAND_WCB_DISAMBIGUATE( PP_HAS_ARGS args, args, userData ) #define EXPAND_WCB_UNWRAP_ARGS(args) EXPAND_WCB_UNWRAP_ARGS2 args