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/*
* Copyright (c) 2015-2017, 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 Interface to Parser.
*/
#ifndef _RE_PARSER_H_
#define _RE_PARSER_H_
#include "ue2common.h"
#include <memory>
namespace ue2 {
class Component;
/** \brief Represents the current "mode flags" at any point in the parsing
* process.
*
* This is necessary as some modes can be changed part-way through an
* expression, such as in:
*
* /foo(?i)bar/
*/
struct ParseMode {
ParseMode() {}
explicit ParseMode(u32 hs_flags);
bool caseless = false;
bool dotall = false;
bool ignore_space = false;
bool multiline = false;
bool ucp = false;
bool utf8 = false;
};
/** \brief Parse the given regular expression into a \ref Component tree.
*
* The \a mode parameter should contain the initial mode flags, and will be
* updated by the parser if additional global flags are introduced in the
* expression (for example, via "(*UTF8)".)
*
* This call will throw a ParseError on failure.
*/
std::unique_ptr<Component> parse(const char *ptr, ParseMode &mode);
} // namespace ue2
#endif // _RE_PARSER_H_
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