diff options
| author | 3gg <3gg@shellblade.net> | 2025-12-27 12:03:39 -0800 |
|---|---|---|
| committer | 3gg <3gg@shellblade.net> | 2025-12-27 12:03:39 -0800 |
| commit | 5a079a2d114f96d4847d1ee305d5b7c16eeec50e (patch) | |
| tree | 8926ab44f168acf787d8e19608857b3af0f82758 /contrib/SDL-3.2.8/include/SDL3/SDL_error.h | |
Initial commit
Diffstat (limited to 'contrib/SDL-3.2.8/include/SDL3/SDL_error.h')
| -rw-r--r-- | contrib/SDL-3.2.8/include/SDL3/SDL_error.h | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/contrib/SDL-3.2.8/include/SDL3/SDL_error.h b/contrib/SDL-3.2.8/include/SDL3/SDL_error.h new file mode 100644 index 0000000..934967c --- /dev/null +++ b/contrib/SDL-3.2.8/include/SDL3/SDL_error.h | |||
| @@ -0,0 +1,226 @@ | |||
| 1 | /* | ||
| 2 | Simple DirectMedia Layer | ||
| 3 | Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org> | ||
| 4 | |||
| 5 | This software is provided 'as-is', without any express or implied | ||
| 6 | warranty. In no event will the authors be held liable for any damages | ||
| 7 | arising from the use of this software. | ||
| 8 | |||
| 9 | Permission is granted to anyone to use this software for any purpose, | ||
| 10 | including commercial applications, and to alter it and redistribute it | ||
| 11 | freely, subject to the following restrictions: | ||
| 12 | |||
| 13 | 1. The origin of this software must not be misrepresented; you must not | ||
| 14 | claim that you wrote the original software. If you use this software | ||
| 15 | in a product, an acknowledgment in the product documentation would be | ||
| 16 | appreciated but is not required. | ||
| 17 | 2. Altered source versions must be plainly marked as such, and must not be | ||
| 18 | misrepresented as being the original software. | ||
| 19 | 3. This notice may not be removed or altered from any source distribution. | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * # CategoryError | ||
| 24 | * | ||
| 25 | * Simple error message routines for SDL. | ||
| 26 | * | ||
| 27 | * Most apps will interface with these APIs in exactly one function: when | ||
| 28 | * almost any SDL function call reports failure, you can get a human-readable | ||
| 29 | * string of the problem from SDL_GetError(). | ||
| 30 | * | ||
| 31 | * These strings are maintained per-thread, and apps are welcome to set their | ||
| 32 | * own errors, which is popular when building libraries on top of SDL for | ||
| 33 | * other apps to consume. These strings are set by calling SDL_SetError(). | ||
| 34 | * | ||
| 35 | * A common usage pattern is to have a function that returns true for success | ||
| 36 | * and false for failure, and do this when something fails: | ||
| 37 | * | ||
| 38 | * ```c | ||
| 39 | * if (something_went_wrong) { | ||
| 40 | * return SDL_SetError("The thing broke in this specific way: %d", errcode); | ||
| 41 | * } | ||
| 42 | * ``` | ||
| 43 | * | ||
| 44 | * It's also common to just return `false` in this case if the failing thing | ||
| 45 | * is known to call SDL_SetError(), so errors simply propagate through. | ||
| 46 | */ | ||
| 47 | |||
| 48 | #ifndef SDL_error_h_ | ||
| 49 | #define SDL_error_h_ | ||
| 50 | |||
| 51 | #include <SDL3/SDL_stdinc.h> | ||
| 52 | |||
| 53 | #include <SDL3/SDL_begin_code.h> | ||
| 54 | /* Set up for C function definitions, even when using C++ */ | ||
| 55 | #ifdef __cplusplus | ||
| 56 | extern "C" { | ||
| 57 | #endif | ||
| 58 | |||
| 59 | /* Public functions */ | ||
| 60 | |||
| 61 | |||
| 62 | /** | ||
| 63 | * Set the SDL error message for the current thread. | ||
| 64 | * | ||
| 65 | * Calling this function will replace any previous error message that was set. | ||
| 66 | * | ||
| 67 | * This function always returns false, since SDL frequently uses false to | ||
| 68 | * signify a failing result, leading to this idiom: | ||
| 69 | * | ||
| 70 | * ```c | ||
| 71 | * if (error_code) { | ||
| 72 | * return SDL_SetError("This operation has failed: %d", error_code); | ||
| 73 | * } | ||
| 74 | * ``` | ||
| 75 | * | ||
| 76 | * \param fmt a printf()-style message format string. | ||
| 77 | * \param ... additional parameters matching % tokens in the `fmt` string, if | ||
| 78 | * any. | ||
| 79 | * \returns false. | ||
| 80 | * | ||
| 81 | * \threadsafety It is safe to call this function from any thread. | ||
| 82 | * | ||
| 83 | * \since This function is available since SDL 3.2.0. | ||
| 84 | * | ||
| 85 | * \sa SDL_ClearError | ||
| 86 | * \sa SDL_GetError | ||
| 87 | * \sa SDL_SetErrorV | ||
| 88 | */ | ||
| 89 | extern SDL_DECLSPEC bool SDLCALL SDL_SetError(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) SDL_PRINTF_VARARG_FUNC(1); | ||
| 90 | |||
| 91 | /** | ||
| 92 | * Set the SDL error message for the current thread. | ||
| 93 | * | ||
| 94 | * Calling this function will replace any previous error message that was set. | ||
| 95 | * | ||
| 96 | * \param fmt a printf()-style message format string. | ||
| 97 | * \param ap a variable argument list. | ||
| 98 | * \returns false. | ||
| 99 | * | ||
| 100 | * \threadsafety It is safe to call this function from any thread. | ||
| 101 | * | ||
| 102 | * \since This function is available since SDL 3.2.0. | ||
| 103 | * | ||
| 104 | * \sa SDL_ClearError | ||
| 105 | * \sa SDL_GetError | ||
| 106 | * \sa SDL_SetError | ||
| 107 | */ | ||
| 108 | extern SDL_DECLSPEC bool SDLCALL SDL_SetErrorV(SDL_PRINTF_FORMAT_STRING const char *fmt, va_list ap) SDL_PRINTF_VARARG_FUNCV(1); | ||
| 109 | |||
| 110 | /** | ||
| 111 | * Set an error indicating that memory allocation failed. | ||
| 112 | * | ||
| 113 | * This function does not do any memory allocation. | ||
| 114 | * | ||
| 115 | * \returns false. | ||
| 116 | * | ||
| 117 | * \threadsafety It is safe to call this function from any thread. | ||
| 118 | * | ||
| 119 | * \since This function is available since SDL 3.2.0. | ||
| 120 | */ | ||
| 121 | extern SDL_DECLSPEC bool SDLCALL SDL_OutOfMemory(void); | ||
| 122 | |||
| 123 | /** | ||
| 124 | * Retrieve a message about the last error that occurred on the current | ||
| 125 | * thread. | ||
| 126 | * | ||
| 127 | * It is possible for multiple errors to occur before calling SDL_GetError(). | ||
| 128 | * Only the last error is returned. | ||
| 129 | * | ||
| 130 | * The message is only applicable when an SDL function has signaled an error. | ||
| 131 | * You must check the return values of SDL function calls to determine when to | ||
| 132 | * appropriately call SDL_GetError(). You should *not* use the results of | ||
| 133 | * SDL_GetError() to decide if an error has occurred! Sometimes SDL will set | ||
| 134 | * an error string even when reporting success. | ||
| 135 | * | ||
| 136 | * SDL will *not* clear the error string for successful API calls. You *must* | ||
| 137 | * check return values for failure cases before you can assume the error | ||
| 138 | * string applies. | ||
| 139 | * | ||
| 140 | * Error strings are set per-thread, so an error set in a different thread | ||
| 141 | * will not interfere with the current thread's operation. | ||
| 142 | * | ||
| 143 | * The returned value is a thread-local string which will remain valid until | ||
| 144 | * the current thread's error string is changed. The caller should make a copy | ||
| 145 | * if the value is needed after the next SDL API call. | ||
| 146 | * | ||
| 147 | * \returns a message with information about the specific error that occurred, | ||
| 148 | * or an empty string if there hasn't been an error message set since | ||
| 149 | * the last call to SDL_ClearError(). | ||
| 150 | * | ||
| 151 | * \threadsafety It is safe to call this function from any thread. | ||
| 152 | * | ||
| 153 | * \since This function is available since SDL 3.2.0. | ||
| 154 | * | ||
| 155 | * \sa SDL_ClearError | ||
| 156 | * \sa SDL_SetError | ||
| 157 | */ | ||
| 158 | extern SDL_DECLSPEC const char * SDLCALL SDL_GetError(void); | ||
| 159 | |||
| 160 | /** | ||
| 161 | * Clear any previous error message for this thread. | ||
| 162 | * | ||
| 163 | * \returns true. | ||
| 164 | * | ||
| 165 | * \threadsafety It is safe to call this function from any thread. | ||
| 166 | * | ||
| 167 | * \since This function is available since SDL 3.2.0. | ||
| 168 | * | ||
| 169 | * \sa SDL_GetError | ||
| 170 | * \sa SDL_SetError | ||
| 171 | */ | ||
| 172 | extern SDL_DECLSPEC bool SDLCALL SDL_ClearError(void); | ||
| 173 | |||
| 174 | /** | ||
| 175 | * \name Internal error functions | ||
| 176 | * | ||
| 177 | * \internal | ||
| 178 | * Private error reporting function - used internally. | ||
| 179 | */ | ||
| 180 | /* @{ */ | ||
| 181 | |||
| 182 | /** | ||
| 183 | * A macro to standardize error reporting on unsupported operations. | ||
| 184 | * | ||
| 185 | * This simply calls SDL_SetError() with a standardized error string, for | ||
| 186 | * convenience, consistency, and clarity. | ||
| 187 | * | ||
| 188 | * \threadsafety It is safe to call this macro from any thread. | ||
| 189 | * | ||
| 190 | * \since This macro is available since SDL 3.2.0. | ||
| 191 | */ | ||
| 192 | #define SDL_Unsupported() SDL_SetError("That operation is not supported") | ||
| 193 | |||
| 194 | /** | ||
| 195 | * A macro to standardize error reporting on unsupported operations. | ||
| 196 | * | ||
| 197 | * This simply calls SDL_SetError() with a standardized error string, for | ||
| 198 | * convenience, consistency, and clarity. | ||
| 199 | * | ||
| 200 | * A common usage pattern inside SDL is this: | ||
| 201 | * | ||
| 202 | * ```c | ||
| 203 | * bool MyFunction(const char *str) { | ||
| 204 | * if (!str) { | ||
| 205 | * return SDL_InvalidParamError("str"); // returns false. | ||
| 206 | * } | ||
| 207 | * DoSomething(str); | ||
| 208 | * return true; | ||
| 209 | * } | ||
| 210 | * ``` | ||
| 211 | * | ||
| 212 | * \threadsafety It is safe to call this macro from any thread. | ||
| 213 | * | ||
| 214 | * \since This macro is available since SDL 3.2.0. | ||
| 215 | */ | ||
| 216 | #define SDL_InvalidParamError(param) SDL_SetError("Parameter '%s' is invalid", (param)) | ||
| 217 | |||
| 218 | /* @} *//* Internal error functions */ | ||
| 219 | |||
| 220 | /* Ends C function definitions when using C++ */ | ||
| 221 | #ifdef __cplusplus | ||
| 222 | } | ||
| 223 | #endif | ||
| 224 | #include <SDL3/SDL_close_code.h> | ||
| 225 | |||
| 226 | #endif /* SDL_error_h_ */ | ||
