text: /*
   * Copyright (C) 2013 Google, Inc. All Rights Reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef HTMLToken_h
  #define HTMLToken_h
  
  #include <stddef.h>
  
  #include <vector>
  
  #include "ios/third_party/blink/src/html_tokenizer_adapter.h"
  
  namespace WebCore {
  
  class HTMLToken {
      WTF_MAKE_NONCOPYABLE(HTMLToken);
  
  public:
      enum Type {
          Uninitialized,
          DOCTYPE,
          StartTag,
          EndTag,
          Comment,
          Character,
          EndOfFile,
      };
  
      HTMLToken();
      ~HTMLToken();
  
      void clear()
      {
          m_type = Uninitialized;
          m_data.clear();
      }
  
      Type type() const { return m_type; }
  
      void makeEndOfFile()
      {
          ASSERT(m_type == Uninitialized);
          m_type = EndOfFile;
      }
  
      void appendToName(LChar character)
      {
          ASSERT(m_type == StartTag || m_type == EndTag || m_type == DOCTYPE);
          ASSERT(character);
          m_data.push_back(character);
      }
  
      bool nameEquals(const LChar* name, size_t length)
      {
          ASSERT(m_type == StartTag || m_type == EndTag || m_type == DOCTYPE);
          if (length != m_data.size())
              return false;
  
          for (size_t index = 0; index < length; ++index) {
              if (m_data.at(index) != name[index])
                  return false;
          }
  
          return true;
      }
  
      /* DOCTYPE Tokens */
  
      void beginDOCTYPE()
      {
          ASSERT(m_type == Uninitialized);
          m_type = DOCTYPE;
      }
  
      /* Start/End Tag Tokens */
  
      void beginStartTag(LChar character)
      {
          ASSERT(character);
          ASSERT(m_type == Uninitialized);
          m_type = StartTag;
  
          m_data.push_back(character);
      }
  
      void beginEndTag(LChar character)
      {
          ASSERT(m_type == Uninitialized);
          m_type = EndTag;
  
          m_data.push_back(character);
      }
  
      /* Character Tokens */
  
      // Starting a character token works slightly differently than starting
      // other types of tokens because we want to save a per-character branch.
      void ensureIsCharacterToken()
      {
          ASSERT(m_type == Uninitialized || m_type == Character);
          m_type = Character;
      }
  
      /* Comment Tokens */
  
      void beginComment()
      {
          ASSERT(m_type == Uninitialized);
          m_type = Comment;
      }
  
  private:
      Type m_type;
      std::vector<LChar> m_data;
  };
  }
  
  #endif
  