/*
 * Copyright (c) 2016, 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
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/**
 * \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 <vector>

struct HWLM;

namespace ue2 {

struct hwlmLiteral;

/**
 * \brief Build up a vector of literals for the given table.
 *
 * If max_offset is specified (and not ROSE_BOUND_INF), then literals that can
 * only lead to a pattern match after max_offset may be excluded.
 */
std::vector<hwlmLiteral> fillHamsterLiteralList(const RoseBuildImpl &build,
                    rose_literal_table table, size_t max_len,
                    u32 max_offset = ROSE_BOUND_INF);

aligned_unique_ptr<HWLM> buildFloatingMatcher(const RoseBuildImpl &build,
                                              size_t longLitLengthThreshold,
                                              rose_group *fgroups,
                                              size_t *fsize,
                                              size_t *historyRequired);

aligned_unique_ptr<HWLM> buildSmallBlockMatcher(const RoseBuildImpl &build,
                                                size_t *sbsize);

aligned_unique_ptr<HWLM> buildEodAnchoredMatcher(const RoseBuildImpl &build,
                                                 size_t *esize);

void findMoreLiteralMasks(RoseBuildImpl &build);

} // namespace ue2

#endif // ROSE_BUILD_MATCHERS_H