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