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 Back-references (/([a-f]{3}).*\\1/)
31 */
32
33#ifndef _RE_COMPONENTBACKREFERENCE_H_
34#define _RE_COMPONENTBACKREFERENCE_H_
35
36#include "Component.h"
37#include <string>
38
39namespace ue2 {
40
41class ComponentBackReference : public Component {
42 friend class DumpVisitor;
43 friend class PrintVisitor;
44 friend class ReferenceVisitor;
45public:
46 explicit ComponentBackReference(unsigned int id);
47 explicit ComponentBackReference(const std::string &s);
48 ~ComponentBackReference() override {}
49 ComponentBackReference *clone() const override;
50
51 Component *accept(ComponentVisitor &v) override {
52 Component *c = v.visit(this);
53 v.post(this);
54 return c;
55 }
56
57 void accept(ConstComponentVisitor &v) const override {
58 v.pre(*this);
59 v.during(*this);
60 v.post(*this);
61 }
62
63 unsigned int getRefID() const { return ref_id; }
64 const std::string &getRefName() const { return name; }
65
66 std::vector<PositionInfo> first() const override;
67 std::vector<PositionInfo> last() const override;
68 bool empty(void) const override;
69 void notePositions(GlushkovBuildState &bs) override;
70 void buildFollowSet(GlushkovBuildState &bs,
71 const std::vector<PositionInfo> &lastPos) override;
72
73private:
74 // Private copy ctor. Use clone instead.
75 ComponentBackReference(const ComponentBackReference &other)
76 : Component(other), name(other.name), ref_id(other.ref_id) {}
77
78 std::string name;
79 unsigned int ref_id;
80};
81
82} // namespace ue2
83
84#endif
85