99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
/* ******************************************************************
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Error codes and messages
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Copyright (C) 2013-2015, Yann Collet
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BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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You can contact the author at :
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- Source repository : https://github.com/Cyan4973/FiniteStateEntropy
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- Public forum : https://groups.google.com/forum/#!forum/lz4c
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****************************************************************** */
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#ifndef ERROR_H_MODULE
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#define ERROR_H_MODULE
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#if defined (__cplusplus)
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extern "C" {
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#endif
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/******************************************
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* Includes
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******************************************/
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#include <stddef.h> /* size_t, ptrdiff_t */
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/******************************************
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* Compiler-specific
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******************************************/
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#if defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
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# define ERR_STATIC static inline
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#elif defined(_MSC_VER)
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# define ERR_STATIC static __inline
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#elif defined(__GNUC__)
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# define ERR_STATIC static __attribute__((unused))
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#else
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# define ERR_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */
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#endif
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/******************************************
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* Error Management
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******************************************/
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#define PREFIX(name) ZSTD_error_##name
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#define ERROR(name) (size_t)-PREFIX(name)
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#define ERROR_LIST(ITEM) \
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ITEM(PREFIX(No_Error)) ITEM(PREFIX(GENERIC)) \
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ITEM(PREFIX(memory_allocation)) \
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ITEM(PREFIX(dstSize_tooSmall)) ITEM(PREFIX(srcSize_wrong)) \
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ITEM(PREFIX(prefix_unknown)) ITEM(PREFIX(corruption_detected)) \
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ITEM(PREFIX(tableLog_tooLarge)) ITEM(PREFIX(maxSymbolValue_tooLarge)) ITEM(PREFIX(maxSymbolValue_tooSmall)) \
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ITEM(PREFIX(maxCode))
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#define ERROR_GENERATE_ENUM(ENUM) ENUM,
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typedef enum { ERROR_LIST(ERROR_GENERATE_ENUM) } ERR_codes; /* enum is exposed, to detect & handle specific errors; compare function result to -enum value */
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#define ERROR_CONVERTTOSTRING(STRING) #STRING,
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#define ERROR_GENERATE_STRING(EXPR) ERROR_CONVERTTOSTRING(EXPR)
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static const char* ERR_strings[] = { ERROR_LIST(ERROR_GENERATE_STRING) };
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ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); }
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ERR_STATIC const char* ERR_getErrorName(size_t code)
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{
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static const char* codeError = "Unspecified error code";
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if (ERR_isError(code)) return ERR_strings[-(int)(code)];
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return codeError;
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}
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#if defined (__cplusplus)
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}
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#endif
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#endif /* ERROR_H_MODULE */
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