/*
 * 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 GOOGLE 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 GOOGLE 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 HTMLTreeBuilderSimulator_h
#define HTMLTreeBuilderSimulator_h

#include "core/CoreExport.h"
#include "core/html/parser/HTMLParserOptions.h"
#include "platform/wtf/Vector.h"

namespace blink {

class CompactHTMLToken;
class HTMLTokenizer;
class HTMLTreeBuilder;

class CORE_EXPORT HTMLTreeBuilderSimulator {
  USING_FAST_MALLOC(HTMLTreeBuilderSimulator);

 private:
  enum Namespace { HTML, SVG, kMathML };

 public:
  enum SimulatedToken {
    kScriptStart,
    kScriptEnd,
    kLink,
    kStyleEnd,
    kOtherToken
  };

  typedef Vector<Namespace, 1> State;

  explicit HTMLTreeBuilderSimulator(const HTMLParserOptions&);

  static State StateFor(HTMLTreeBuilder*);

  const State& GetState() const { return namespace_stack_; }
  void SetState(const State& state) { namespace_stack_ = state; }

  SimulatedToken Simulate(const CompactHTMLToken&, HTMLTokenizer*);

 private:
  bool InForeignContent() const { return namespace_stack_.back() != HTML; }
  bool IsHTMLIntegrationPointForStartTag(const CompactHTMLToken&) const;
  bool IsHTMLIntegrationPointForEndTag(const CompactHTMLToken&) const;

  HTMLParserOptions options_;
  State namespace_stack_;
  bool in_select_insertion_mode_;
};

}  // namespace blink

#endif