1/*
2 * Copyright (C) 2013 Google, Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. 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 *
13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef HTMLTreeBuilderSimulator_h
27#define HTMLTreeBuilderSimulator_h
28
29#include "core/html/parser/HTMLParserOptions.h"
30#include "wtf/Vector.h"
31
32namespace blink {
33
34class CompactHTMLToken;
35class HTMLTokenizer;
36class HTMLTreeBuilder;
37
38class HTMLTreeBuilderSimulator {
39    WTF_MAKE_FAST_ALLOCATED;
40private:
41    enum Namespace {
42        HTML,
43        SVG,
44        MathML
45    };
46
47public:
48    typedef Vector<Namespace, 1> State;
49
50    explicit HTMLTreeBuilderSimulator(const HTMLParserOptions&);
51
52    static State stateFor(HTMLTreeBuilder*);
53
54    const State& state() const { return m_namespaceStack; }
55    void setState(const State& state) { m_namespaceStack = state; }
56
57    bool simulate(const CompactHTMLToken&, HTMLTokenizer*);
58
59private:
60    explicit HTMLTreeBuilderSimulator(HTMLTreeBuilder*);
61
62    bool inForeignContent() const { return m_namespaceStack.last() != HTML; }
63
64    HTMLParserOptions m_options;
65    State m_namespaceStack;
66};
67
68}
69
70#endif
71