/*
 * 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 Rose build: code for constructing literal tables.
 */

#ifndef ROSE_BUILD_MATCHERS_H
#define ROSE_BUILD_MATCHERS_H

#include "rose_build_impl.h"
#include "rose_build_lit_accel.h"
#include "hwlm/hwlm_build.h"
#include "util/bytecode_ptr.h"
#include "util/ue2string.h"

#include <vector>

struct Grey;
struct HWLM;

namespace ue2 {

static constexpr u32 INVALID_FRAG_ID = ~0U;

struct LitFragment {
    LitFragment(u32 fragment_id_in, ue2_literal s_in,
                rose_group groups_in, u32 lit_id)
    : fragment_id(fragment_id_in), s(s_in), groups(groups_in),
      lit_ids({lit_id}) {}
    LitFragment(u32 fragment_id_in, ue2_literal s_in,
                rose_group groups_in, std::vector<u32> lit_ids_in)
    : fragment_id(fragment_id_in), s(s_in), groups(groups_in),
      lit_ids(std::move(lit_ids_in)) {}
    u32 fragment_id;

    /**
     * \brief literal fragment.
     */
    ue2_literal s;

    /**
     * \brief FDR confirm squash mask for included literals.
     */
    u8 squash;

    /**
     * \brief FDR confirm squash mask for included literals (Delayed
     * literals only).
     */
    u8 delay_squash;

    /**
     * \brief Fragment id of included literal.
     */
    u32 included_frag_id = INVALID_FRAG_ID;

    /**
     * \brief Fragment Id of included literal (Delayed literals only).
     */
    u32 included_delay_frag_id = INVALID_FRAG_ID;
    rose_group groups;
    std::vector<u32> lit_ids;
    u32 lit_program_offset = ROSE_INVALID_PROG_OFFSET;
    u32 delay_program_offset = ROSE_INVALID_PROG_OFFSET;
};

struct LitProto {
    LitProto(std::unique_ptr<HWLMProto> hwlmProto_in,
             std::vector<AccelString> &accel_lits_in)
    : hwlmProto(std::move(hwlmProto_in)), accel_lits(accel_lits_in) {}

    std::unique_ptr<HWLMProto> hwlmProto;
    std::vector<AccelString> accel_lits;
};

bytecode_ptr<HWLM>
buildHWLMMatcher(const RoseBuildImpl &build, LitProto *proto);

std::unique_ptr<LitProto>
buildFloatingMatcherProto(const RoseBuildImpl &build,
                          const std::vector<LitFragment> &fragments,
                          size_t longLitLengthThreshold,
                          rose_group *fgroups,
                          size_t *historyRequired);

std::unique_ptr<LitProto>
buildDelayRebuildMatcherProto(const RoseBuildImpl &build,
                              const std::vector<LitFragment> &fragments,
                              size_t longLitLengthThreshold);
std::unique_ptr<LitProto>
buildSmallBlockMatcherProto(const RoseBuildImpl &build,
                            const std::vector<LitFragment> &fragments);

std::unique_ptr<LitProto>
buildEodAnchoredMatcherProto(const RoseBuildImpl &build,
                             const std::vector<LitFragment> &fragments);

void findMoreLiteralMasks(RoseBuildImpl &build);

} // namespace ue2

#endif // ROSE_BUILD_MATCHERS_H