/* * Copyright (c) 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   /* *****************************************  Dependencies******************************************/#include "zstd_deps.h"    /* size_t */#include <linux/zstd_errors.h>  /* enum list */  /* *****************************************  Compiler-specific******************************************/#define ERR_STATIC static __attribute__((unused))  /*-*****************************************  Customization (error_public.h)******************************************/typedef ZSTD_ErrorCode ERR_enum;#define PREFIX(name) ZSTD_error_##name  /*-*****************************************  Error codes handling******************************************/#undef ERROR   /* already defined on Visual Studio */#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); } /* check and forward error code */#define CHECK_V_F(e, f) size_t const e = f; if (ERR_isError(e)) return e#define CHECK_F(f)   { CHECK_V_F(_var_err__, f); }  /*-*****************************************  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));}  #endif /* ERROR_H_MODULE */