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 |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | /** \file |
30 | * \brief Build code for McClellan DFA. |
31 | */ |
32 | |
33 | #ifndef NG_MCCLELLAN_H |
34 | #define NG_MCCLELLAN_H |
35 | |
36 | #include "ue2common.h" |
37 | |
38 | #include <memory> |
39 | #include <vector> |
40 | |
41 | namespace ue2 { |
42 | |
43 | class CharReach; |
44 | class NGHolder; |
45 | class ReportManager; |
46 | struct Grey; |
47 | struct raw_dfa; |
48 | |
49 | /** |
50 | * \brief Determinises an NFA Graph into a raw_dfa. |
51 | * |
52 | * \param g |
53 | * The NGHolder. |
54 | * \param rm |
55 | * A pointer to the ReportManager, if managed reports are used (e.g. |
56 | * for outfixes/suffixes). Otherwise nullptr. |
57 | * \param single_trigger |
58 | * True if it is known that the nfa will only ever be trigger once. |
59 | * \param triggers |
60 | * Representing when tops may arrive. Only used by NFA_INFIX and |
61 | * NFA_SUFFIX, should be empty for other types. |
62 | * \param grey |
63 | * Grey box object. |
64 | * \param finalChance |
65 | * Allows us to build bigger DFAs as the only alternative is an outfix. |
66 | * |
67 | * \return A raw_dfa, or nullptr on failure (state limit blown). |
68 | */ |
69 | std::unique_ptr<raw_dfa> buildMcClellan(const NGHolder &g, |
70 | const ReportManager *rm, bool single_trigger, |
71 | const std::vector<std::vector<CharReach>> &triggers, |
72 | const Grey &grey, bool finalChance = false); |
73 | |
74 | /** Convenience wrapper for non-triggered engines */ |
75 | std::unique_ptr<raw_dfa> buildMcClellan(const NGHolder &g, |
76 | const ReportManager *rm, |
77 | const Grey &grey); |
78 | |
79 | } // namespace ue2 |
80 | |
81 | #endif // NG_MCCLELLAN_H |
82 | |