parser/html/nsHtml5Speculation.h

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #ifndef nsHtml5Speculation_h
   6 #define nsHtml5Speculation_h
   7
   8 #include "nsHtml5OwningUTF16Buffer.h"
   9 #include "nsAHtml5TreeBuilderState.h"
  10 #include "nsHtml5TreeOperation.h"
  11 #include "nsAHtml5TreeOpSink.h"
  12 #include "nsTArray.h"
  13 #include "mozilla/Attributes.h"
  14 #include "mozilla/UniquePtr.h"
  15
  16 class nsHtml5Speculation final : public nsAHtml5TreeOpSink {
  17  public:
  18   nsHtml5Speculation(nsHtml5OwningUTF16Buffer* aBuffer, int32_t aStart,
  19                      int32_t aStartLineNumber, int32_t aStartColumnNumber,
  20                      nsAHtml5TreeBuilderState* aSnapshot);
  21
  22   ~nsHtml5Speculation();
  23
  24   nsHtml5OwningUTF16Buffer* GetBuffer() { return mBuffer; }
  25
  26   int32_t GetStart() { return mStart; }
  27
  28   int32_t GetStartLineNumber() { return mStartLineNumber; }
  29
  30   int32_t GetStartColumnNumber() { return mStartColumnNumber; }
  31
  32   nsAHtml5TreeBuilderState* GetSnapshot() { return mSnapshot.get(); }
  33
  34   /**
  35    * Flush the operations from the tree operations from the argument
  36    * queue unconditionally.
  37    */
  38   [[nodiscard]] virtual bool MoveOpsFrom(
  39       nsTArray<nsHtml5TreeOperation>& aOpQueue) override;
  40
  41   [[nodiscard]] bool FlushToSink(nsAHtml5TreeOpSink* aSink);
  42
  43  private:
  44   /**
  45    * The first buffer in the pending UTF-16 buffer queue
  46    */
  47   RefPtr<nsHtml5OwningUTF16Buffer> mBuffer;
  48
  49   /**
  50    * The start index of this speculation in the first buffer
  51    */
  52   int32_t mStart;
  53
  54   /**
  55    * The current line number at the start of the speculation
  56    */
  57   int32_t mStartLineNumber;
  58
  59   /**
  60    * The current line number at the start of the speculation.
  61    */
  62   int32_t mStartColumnNumber;
  63
  64   mozilla::UniquePtr<nsAHtml5TreeBuilderState> mSnapshot;
  65
  66   nsTArray<nsHtml5TreeOperation> mOpQueue;
  67 };
  68
  69 #endif  // nsHtml5Speculation_h