Quelle nsHtml5Speculation.h Sprache: C

/* 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 "mozilla/Attributes.h"
#include "mozilla/UniquePtr.h"

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

  ~nsHtml5Speculation();

  nsHtml5OwningUTF16Buffer* GetBuffer() { return mBuffer; }

  int32_t GetStart() { return mStart; }

  int32_t GetStartLineNumber() { return mStartLineNumber; }

  int32_t GetStartColumnNumber() { return mStartColumnNumber; }

  nsAHtml5TreeBuilderState* GetSnapshot() { return mSnapshot.get(); }

  /**
   * Flush the operations from the tree operations from the argument
   * queue unconditionally.
   */
  [[nodiscard]] virtual bool MoveOpsFrom(
      nsTArray<nsHtml5TreeOperation>& aOpQueue) override;

  [[nodiscard]] bool FlushToSink(nsAHtml5TreeOpSink* aSink);

private:
  /**
   * The first buffer in the pending UTF-16 buffer queue
   */
  RefPtr<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;

  /**
   * The current line number at the start of the speculation.
   */
  int32_t mStartColumnNumber;

  mozilla::UniquePtr<nsAHtml5TreeBuilderState> mSnapshot;

  nsTArray<nsHtml5TreeOperation> mOpQueue;
};

#endif  // nsHtml5Speculation_h

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