1 | /* |
2 | * Copyright (c) 2016-2018, 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 | #ifndef SHENGCOMPILE_H |
30 | #define SHENGCOMPILE_H |
31 | |
32 | #include "accel_dfa_build_strat.h" |
33 | #include "rdfa.h" |
34 | #include "util/bytecode_ptr.h" |
35 | #include "util/charreach.h" |
36 | #include "util/flat_containers.h" |
37 | |
38 | #include <memory> |
39 | #include <set> |
40 | |
41 | struct NFA; |
42 | |
43 | namespace ue2 { |
44 | |
45 | class ReportManager; |
46 | struct CompileContext; |
47 | struct raw_dfa; |
48 | |
49 | class sheng_build_strat : public accel_dfa_build_strat { |
50 | public: |
51 | sheng_build_strat(raw_dfa &rdfa_in, const ReportManager &rm_in, |
52 | bool only_accel_init_in) |
53 | : accel_dfa_build_strat(rm_in, only_accel_init_in), rdfa(rdfa_in) {} |
54 | raw_dfa &get_raw() const override { return rdfa; } |
55 | std::unique_ptr<raw_report_info> gatherReports( |
56 | std::vector<u32> &reports /* out */, |
57 | std::vector<u32> &reports_eod /* out */, |
58 | u8 *isSingleReport /* out */, |
59 | ReportID *arbReport /* out */) const override; |
60 | size_t accelSize(void) const override; |
61 | u32 max_allowed_offset_accel() const override; |
62 | u32 max_stop_char() const override; |
63 | u32 max_floating_stop_char() const override; |
64 | DfaType getType() const override { return Sheng; } |
65 | |
66 | private: |
67 | raw_dfa &rdfa; |
68 | }; |
69 | |
70 | bytecode_ptr<NFA> shengCompile(raw_dfa &raw, const CompileContext &cc, |
71 | const ReportManager &rm, bool only_accel_init, |
72 | std::set<dstate_id_t> *accel_states = nullptr); |
73 | |
74 | struct sheng_escape_info { |
75 | CharReach outs; |
76 | CharReach outs2_single; |
77 | flat_set<std::pair<u8, u8>> outs2; |
78 | bool outs2_broken = false; |
79 | }; |
80 | |
81 | bool has_accel_sheng(const NFA *nfa); |
82 | |
83 | } // namespace ue2 |
84 | |
85 | #endif /* SHENGCOMPILE_H */ |
86 | |