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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 Execute an NFA over a given input, returning the set of states that
* are active afterwards.
*/
#ifndef NG_EXECUTE_H
#define NG_EXECUTE_H
#include "ng_holder.h"
#include "util/flat_containers.h"
#include <vector>
namespace ue2 {
class CharReach;
struct ue2_literal;
flat_set<NFAVertex> execute_graph(const NGHolder &g, const ue2_literal &input,
const flat_set<NFAVertex> &initial,
bool kill_sds = false);
flat_set<NFAVertex> execute_graph(const NGHolder &g,
const std::vector<CharReach> &input,
const flat_set<NFAVertex> &initial);
/** on exit, states contains any state which may still be enabled after
* receiving an input which corresponds to some path through the input_dag from
* start or startDs to accept. input_dag MUST be acyclic aside from self-loops.
*/
flat_set<NFAVertex> execute_graph(const NGHolder &g, const NGHolder &input_dag,
const flat_set<NFAVertex> &initial);
/* as above, but able to specify the source states for the input graph */
flat_set<NFAVertex> execute_graph(const NGHolder &g, const NGHolder &input_dag,
const flat_set<NFAVertex> &input_start_states,
const flat_set<NFAVertex> &initial);
/* returns true if it is possible for the nfa to die within age_limit bytes */
bool can_die_early(const NGHolder &g, u32 age_limit);
} // namespace ue2
#endif
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