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/*
* Copyright (c) 2016-2017, 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 Tamarama: container engine for exclusive engines, compiler code.
*/
#ifndef NFA_TAMARAMACOMPILE_H
#define NFA_TAMARAMACOMPILE_H
#include "ue2common.h"
#include "util/bytecode_ptr.h"
#include <map>
#include <set>
#include <vector>
struct NFA;
namespace ue2 {
/**
* \brief A TamaProto that contains top remapping and reports info.
*/
struct TamaProto {
void add(const NFA *n, const u32 id, const u32 top,
const std::map<std::pair<const NFA *, u32>, u32> &out_top_remap);
/** Top remapping between <vertex id, top value> and
** remapped top value. */
std::map<std::pair<u32, u32>, u32> top_remap;
/** All the reports in subengines */
std::set<ReportID> reports;
};
/**
* \brief Construction info for a Tamarama engine:
* contains at least two subengines.
*
* A TamaInfo is converted into a single NFA, with each top triggering a
* subengine. A TamaInfo can contain at most TamaInfo::max_occupancy
* subengines.
*/
struct TamaInfo {
static constexpr size_t max_occupancy = 65536; // arbitrary limit
/** \brief Add a new subengine. */
void add(NFA *sub, const std::set<u32> &top);
/** \brief All the subengines */
std::vector<NFA *> subengines;
/** \brief Tops of subengines */
std::vector<std::set<u32>> tops;
};
std::set<ReportID> all_reports(const TamaProto &proto);
/**
* Take in a collection of exclusive subengines and produces a tamarama, also
* returns via out_top_remap, a mapping indicating how tops in the subengines in
* relate to the tamarama's tops.
*/
bytecode_ptr<NFA>
buildTamarama(const TamaInfo &tamaInfo, const u32 queue,
std::map<std::pair<const NFA *, u32>, u32> &out_top_remap);
} // namespace ue2
#endif // NFA_TAMARAMACOMPILE_H
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