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/*
* Copyright (c) 2015-2018, 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 NG declaration.
*/
#ifndef NG_H
#define NG_H
#include "ng_holder.h"
#include "ue2common.h"
#include "parser/position.h"
#include "som/slot_manager.h"
#include "som/som.h"
#include "util/boundary_reports.h"
#include "util/compile_context.h"
#include "util/depth.h"
#include "util/graph.h"
#include "util/noncopyable.h"
#include "util/report_manager.h"
#include <deque>
#include <map>
#include <memory>
#include <utility>
#include <vector>
namespace ue2 {
struct CompileContext;
struct ue2_literal;
class ExpressionInfo;
class RoseBuild;
class SmallWriteBuild;
class NG : noncopyable {
public:
NG(const CompileContext &in_cc, size_t num_patterns,
unsigned in_somPrecision);
~NG();
/** \brief Consumes a pattern, returns false or throws a CompileError
* exception if the graph cannot be consumed. */
bool addGraph(ExpressionInfo &expr, std::unique_ptr<NGHolder> g_ptr);
/** \brief Consumes a graph, cut-down version of addGraph for use by SOM
* processing. */
bool addHolder(NGHolder &h);
/** \brief Adds a literal to Rose, used by literal shortcut passes (instead
* of using \ref addGraph) */
bool addLiteral(const ue2_literal &lit, u32 expr_index, u32 external_report,
bool highlander, som_type som, bool quiet);
/** \brief Maximum history in bytes available for use by SOM reverse NFAs,
* a hack for pattern support (see UE-1903). This is always set to the max
* "lookbehind" length. */
const u32 maxSomRevHistoryAvailable;
/** \brief The length of the shortest corpus which can match a pattern
* contained in the NG (excluding the boundary reports used by vacuous
* patterns, which give an effective minWidth of zero). */
depth minWidth;
ReportManager rm;
SomSlotManager ssm;
BoundaryReports boundary;
const CompileContext cc;
const std::unique_ptr<SmallWriteBuild> smwr; //!< SmallWrite builder.
const std::unique_ptr<RoseBuild> rose; //!< Rose builder.
};
/** \brief Run graph reduction passes.
*
* Shared with the small write compiler.
*/
void reduceGraph(NGHolder &g, som_type som, bool utf8,
const CompileContext &cc);
} // namespace ue2
#endif
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