/*

 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

 * All rights reserved.

 *

 * This source code is licensed under both the BSD-style license (found in the

 * LICENSE file in the root directory of this source tree) and the GPLv2 (found

 * in the COPYING file in the root directory of this source tree).

 * You may select, at your option, one of the above-listed licenses.

 */

/* Note : this module is expected to remain private, do not expose it */

#ifndef ERROR_H_MODULE

#define ERROR_H_MODULE

#if defined (__cplusplus)

extern "C" {

#endif

/* ****************************************

*  Dependencies

******************************************/

#include <stddef.h>        /* size_t */

#include "zstd_errors.h"  /* enum list */

/* ****************************************

*  Compiler-specific

******************************************/

#if defined(__GNUC__)

#  define ERR_STATIC static __attribute__((unused))

#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)

#  define ERR_STATIC static inline

#elif defined(_MSC_VER)

#  define ERR_STATIC static __inline

#else

#  define ERR_STATIC static  /* this version may generate warnings for unused static functions; disable the relevant warning */

#endif

/*-****************************************

*  Customization (error_public.h)

******************************************/

typedef ZSTD_ErrorCode ERR_enum;

#define PREFIX(name) ZSTD_error_##name

/*-****************************************

*  Error codes handling

******************************************/

#undef ERROR   /* reported already defined on VS 2015 (Rich Geldreich) */

#define ERROR(name) ZSTD_ERROR(name)

#define ZSTD_ERROR(name) ((size_t)-PREFIX(name))

ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); }

ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) { if (!ERR_isError(code)) return (ERR_enum)0; return (ERR_enum) (0-code); }

/*-****************************************

*  Error Strings

******************************************/

const char* ERR_getErrorString(ERR_enum code);   /* error_private.c */

ERR_STATIC const char* ERR_getErrorName(size_t code)

{

    return ERR_getErrorString(ERR_getErrorCode(code));

}

#if defined (__cplusplus)

}

#endif

#endif /* ERROR_H_MODULE */