ios/third_party/blink/src/html_token.h

   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 APPLE 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 APPLE 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 HTMLToken_h
  27 #define HTMLToken_h
  28
  29 #include <vector>
  30
  31 #include "ios/third_party/blink/src/html_tokenizer_adapter.h"
  32
  33 namespace WebCore {
  34
  35 class HTMLToken {
  36     WTF_MAKE_NONCOPYABLE(HTMLToken);
  37
  38 public:
  39     enum Type {
  40         Uninitialized,
  41         DOCTYPE,
  42         StartTag,
  43         EndTag,
  44         Comment,
  45         Character,
  46         EndOfFile,
  47     };
  48
  49     HTMLToken();
  50     ~HTMLToken();
  51
  52     void clear()
  53     {
  54         m_type = Uninitialized;
  55         m_data.clear();
  56     }
  57
  58     Type type() const { return m_type; }
  59
  60     void makeEndOfFile()
  61     {
  62         ASSERT(m_type == Uninitialized);
  63         m_type = EndOfFile;
  64     }
  65
  66     void appendToName(LChar character)
  67     {
  68         ASSERT(m_type == StartTag || m_type == EndTag || m_type == DOCTYPE);
  69         ASSERT(character);
  70         m_data.push_back(character);
  71     }
  72
  73     bool nameEquals(const LChar* name, size_t length)
  74     {
  75         ASSERT(m_type == StartTag || m_type == EndTag || m_type == DOCTYPE);
  76         if (length != m_data.size())
  77             return false;
  78
  79         for (size_t index = 0; index < length; ++index) {
  80             if (m_data.at(index) != name[index])
  81                 return false;
  82         }
  83
  84         return true;
  85     }
  86
  87     /* DOCTYPE Tokens */
  88
  89     void beginDOCTYPE()
  90     {
  91         ASSERT(m_type == Uninitialized);
  92         m_type = DOCTYPE;
  93     }
  94
  95     /* Start/End Tag Tokens */
  96
  97     void beginStartTag(LChar character)
  98     {
  99         ASSERT(character);
 100         ASSERT(m_type == Uninitialized);
 101         m_type = StartTag;
 102
 103         m_data.push_back(character);
 104     }
 105
 106     void beginEndTag(LChar character)
 107     {
 108         ASSERT(m_type == Uninitialized);
 109         m_type = EndTag;
 110
 111         m_data.push_back(character);
 112     }
 113
 114     /* Character Tokens */
 115
 116     // Starting a character token works slightly differently than starting
 117     // other types of tokens because we want to save a per-character branch.
 118     void ensureIsCharacterToken()
 119     {
 120         ASSERT(m_type == Uninitialized || m_type == Character);
 121         m_type = Character;
 122     }
 123
 124     /* Comment Tokens */
 125
 126     void beginComment()
 127     {
 128         ASSERT(m_type == Uninitialized);
 129         m_type = Comment;
 130     }
 131
 132 private:
 133     Type m_type;
 134     std::vector<LChar> m_data;
 135 };
 136 }
 137
 138 #endif