1/*
2 * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
3 * Copyright (C) 2006, 2009, 2013 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include "XPathExpressionNode.h"
30
31namespace WebCore {
32 namespace XPath {
33
34 class Step;
35
36 class Filter final : public Expression {
37 public:
38 Filter(std::unique_ptr<Expression>, Vector<std::unique_ptr<Expression>> predicates);
39
40 private:
41 Value evaluate() const override;
42 Value::Type resultType() const override { return Value::NodeSetValue; }
43
44 std::unique_ptr<Expression> m_expression;
45 Vector<std::unique_ptr<Expression>> m_predicates;
46 };
47
48 class LocationPath final : public Expression {
49 public:
50 LocationPath();
51
52 void setAbsolute() { m_isAbsolute = true; setIsContextNodeSensitive(false); }
53
54 void evaluate(NodeSet& nodes) const; // nodes is an input/output parameter
55
56 void appendStep(std::unique_ptr<Step>);
57 void prependStep(std::unique_ptr<Step>);
58
59 private:
60 Value evaluate() const override;
61 Value::Type resultType() const override { return Value::NodeSetValue; }
62
63 Vector<std::unique_ptr<Step>> m_steps;
64 bool m_isAbsolute;
65 };
66
67 class Path final : public Expression {
68 public:
69 Path(std::unique_ptr<Expression> filter, std::unique_ptr<LocationPath>);
70
71 private:
72 Value evaluate() const override;
73 Value::Type resultType() const override { return Value::NodeSetValue; }
74
75 std::unique_ptr<Expression> m_filter;
76 std::unique_ptr<LocationPath> m_path;
77 };
78
79 } // namespace XPath
80} // namespace WebCore
81