parser/html/nsHtml5Speculation.h
author Kyle Huey <khuey@kylehuey.com>
Sun, 11 Nov 2012 10:28:38 -0800
changeset 116834 658d1cf59d3817414e3549c19f0f279de750d48d
parent 108463 a16372ce30b5f6b747246b01fcd215a4bf3b6342
permissions -rw-r--r--
Bug 798491: Add an option to stick all chrome JSMs/JS components in the same compartment. r=mrbkap,philikon a=bajaj

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsHtml5Speculation_h__
#define nsHtml5Speculation_h__

#include "nsHtml5OwningUTF16Buffer.h"
#include "nsAHtml5TreeBuilderState.h"
#include "nsHtml5TreeOperation.h"
#include "nsAHtml5TreeOpSink.h"
#include "nsTArray.h"
#include "nsAutoPtr.h"
#include "mozilla/Attributes.h"

class nsHtml5Speculation MOZ_FINAL : public nsAHtml5TreeOpSink
{
  public:
    nsHtml5Speculation(nsHtml5OwningUTF16Buffer* aBuffer,
                       int32_t aStart, 
                       int32_t aStartLineNumber, 
                       nsAHtml5TreeBuilderState* aSnapshot);
    
    ~nsHtml5Speculation();

    nsHtml5OwningUTF16Buffer* GetBuffer() {
      return mBuffer;
    }
    
    int32_t GetStart() {
      return mStart;
    }

    int32_t GetStartLineNumber() {
      return mStartLineNumber;
    }
    
    nsAHtml5TreeBuilderState* GetSnapshot() {
      return mSnapshot;
    }

    /**
     * Flush the operations from the tree operations from the argument
     * queue unconditionally.
     */
    virtual void MoveOpsFrom(nsTArray<nsHtml5TreeOperation>& aOpQueue);
    
    void FlushToSink(nsAHtml5TreeOpSink* aSink);

  private:
    /**
     * The first buffer in the pending UTF-16 buffer queue
     */
    nsRefPtr<nsHtml5OwningUTF16Buffer>  mBuffer;
    
    /**
     * The start index of this speculation in the first buffer
     */
    int32_t                             mStart;

    /**
     * The current line number at the start of the speculation
     */
    int32_t                             mStartLineNumber;
    
    nsAutoPtr<nsAHtml5TreeBuilderState> mSnapshot;

    nsTArray<nsHtml5TreeOperation>      mOpQueue;
};

#endif // nsHtml5Speculation_h__