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/*
* Copyright (c) 2015-2016, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/** \file
* \brief Compile-time error utils.
*/
#include "allocator.h"
#include "error.h"
#include "ue2common.h"
#include "hs_compile.h"
#include "util/compile_error.h"
#include <cstring>
#include <string>
using std::string;
static const char failureNoMemory[] = "Unable to allocate memory.";
static const char failureInternal[] = "Internal error.";
static const char failureBadAlloc[] = "Allocator returned misaligned memory.";
extern const hs_compile_error_t hs_enomem = {
const_cast<char *>(failureNoMemory), 0
};
extern const hs_compile_error_t hs_einternal = {
const_cast<char *>(failureInternal), 0
};
extern const hs_compile_error_t hs_badalloc = {
const_cast<char *>(failureBadAlloc), 0
};
namespace ue2 {
hs_compile_error_t *generateCompileError(const string &err, int expression) {
hs_compile_error_t *ret =
(struct hs_compile_error *)hs_misc_alloc(sizeof(hs_compile_error_t));
if (ret) {
hs_error_t e = hs_check_alloc(ret);
if (e != HS_SUCCESS) {
hs_misc_free(ret);
return const_cast<hs_compile_error_t *>(&hs_badalloc);
}
char *msg = (char *)hs_misc_alloc(err.size() + 1);
if (msg) {
e = hs_check_alloc(msg);
if (e != HS_SUCCESS) {
hs_misc_free(msg);
return const_cast<hs_compile_error_t *>(&hs_badalloc);
}
memcpy(msg, err.c_str(), err.size() + 1);
ret->message = msg;
} else {
hs_misc_free(ret);
ret = nullptr;
}
}
if (!ret || !ret->message) {
return const_cast<hs_compile_error_t *>(&hs_enomem);
}
ret->expression = expression;
return ret;
}
hs_compile_error_t *generateCompileError(const CompileError &e) {
return generateCompileError(e.reason, e.hasIndex ? (int)e.index : -1);
}
void freeCompileError(hs_compile_error_t *error) {
if (!error) {
return;
}
if (error == &hs_enomem || error == &hs_einternal ||
error == &hs_badalloc) {
// These are not allocated.
return;
}
hs_misc_free(error->message);
hs_misc_free(error);
}
} // namespace ue2
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