1/*
2 * Copyright (c) 2015, Intel Corporation
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * * Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Intel Corporation nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 */
28
29/** \file
30 * \brief Build code for Haig SOM DFA.
31 */
32
33#ifndef NG_HAIG_H
34#define NG_HAIG_H
35
36#include "ue2common.h"
37#include "som/som.h"
38
39#include <memory>
40#include <vector>
41
42namespace ue2 {
43
44class CharReach;
45class NGHolder;
46struct Grey;
47struct raw_som_dfa;
48
49#define HAIG_FINAL_DFA_STATE_LIMIT 16383
50#define HAIG_HARD_DFA_STATE_LIMIT 8192
51
52/* unordered_som_triggers being true indicates that a live haig may be subjected
53 * to later tops arriving with earlier soms (without the haig going dead in
54 * between)
55 */
56
57std::unique_ptr<raw_som_dfa>
58attemptToBuildHaig(const NGHolder &g, som_type som, u32 somPrecision,
59 const std::vector<std::vector<CharReach>> &triggers,
60 const Grey &grey, bool unordered_som_triggers = false);
61
62std::unique_ptr<raw_som_dfa>
63attemptToMergeHaig(const std::vector<const raw_som_dfa *> &dfas,
64 u32 limit = HAIG_HARD_DFA_STATE_LIMIT);
65
66} // namespace ue2
67
68#endif
69