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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.
*/
#ifndef MCCLELLAN_COMPILE_UTIL_H
#define MCCLELLAN_COMPILE_UTIL_H
#include "rdfa.h"
#include "ue2common.h"
#include <set>
namespace ue2 {
u32 remove_leading_dots(raw_dfa &raw);
/**
* \brief Clear reports on any states that are deeper than \a max_offset from
* start of stream.
*
* Returns false if no changes are made to the DFA.
*/
bool clear_deeper_reports(raw_dfa &raw, u32 max_offset);
std::set<ReportID> all_reports(const raw_dfa &rdfa);
bool has_eod_accepts(const raw_dfa &rdfa);
bool has_non_eod_accepts(const raw_dfa &rdfa);
/** \brief Compute a simple hash of this raw_dfa. Does not include report
* information. */
size_t hash_dfa_no_reports(const raw_dfa &rdfa);
/** \brief Compute a simple hash of this raw_dfa, including its reports. */
size_t hash_dfa(const raw_dfa &rdfa);
bool can_die_early(const raw_dfa &raw, u32 age_limit);
/**
* \brief Returns true if this DFA cannot match, i.e. its start state is
* DEAD_STATE.
*/
bool is_dead(const raw_dfa &rdfa);
} // namespace ue2
#endif
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