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 Extended Unicode sequences (\\X)
31 */
32
33#ifndef _RE_COMPONENTEXTENDEDUNICODESEQUENCE_H_
34#define _RE_COMPONENTEXTENDEDUNICODESEQUENCE_H_
35
36#include "Component.h"
37
38namespace ue2 {
39
40struct ParseMode;
41
42class ComponentEUS : public Component {
43 friend class DumpVisitor;
44 friend class UnsupportedVisitor;
45public:
46 ComponentEUS(u32 loc, const ParseMode &mode);
47 ~ComponentEUS() override;
48 ComponentEUS *clone() const override;
49
50 Component *accept(ComponentVisitor &v) override {
51 Component *c = v.visit(this);
52 v.post(this);
53 return c;
54 }
55
56 void accept(ConstComponentVisitor &v) const override {
57 v.pre(*this);
58 v.during(*this);
59 v.post(*this);
60 }
61
62 std::vector<PositionInfo> first() const override;
63 std::vector<PositionInfo> last() const override;
64
65 bool empty() const override { return false; }
66
67 void notePositions(GlushkovBuildState &bs) override;
68 void buildFollowSet(GlushkovBuildState &,
69 const std::vector<PositionInfo> &) override {
70 // all follow set construction is handled by firsts/lasts
71 return;
72 }
73
74private:
75 u32 loc;
76 bool utf8;
77 Position position;
78
79 ComponentEUS(const ComponentEUS &other)
80 : Component(other), loc(other.loc), utf8(other.utf8),
81 position(other.position) {}
82};
83
84} // namespace ue2
85
86#endif
87