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 nsHtml5TreeOpStage_h
6 #define nsHtml5TreeOpStage_h
7 
8 #include "mozilla/Mutex.h"
9 #include "nsHtml5TreeOperation.h"
10 #include "nsTArray.h"
11 #include "nsAHtml5TreeOpSink.h"
12 #include "nsHtml5SpeculativeLoad.h"
13 
14 class nsHtml5TreeOpStage : public nsAHtml5TreeOpSink {
15   public:
16 
17     nsHtml5TreeOpStage();
18 
19     virtual ~nsHtml5TreeOpStage();
20 
21     /**
22      * Flush the operations from the tree operations from the argument
23      * queue unconditionally.
24      */
25     virtual void MoveOpsFrom(nsTArray<nsHtml5TreeOperation>& aOpQueue);
26 
27     /**
28      * Retrieve the staged operations and speculative loads into the arguments.
29      */
30     void MoveOpsAndSpeculativeLoadsTo(nsTArray<nsHtml5TreeOperation>& aOpQueue,
31         nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue);
32 
33     /**
34      * Move the speculative loads from the argument into the staging queue.
35      */
36     void MoveSpeculativeLoadsFrom(nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue);
37 
38     /**
39      * Retrieve the staged speculative loads into the argument.
40      */
41     void MoveSpeculativeLoadsTo(nsTArray<nsHtml5SpeculativeLoad>& aSpeculativeLoadQueue);
42 
43 #ifdef DEBUG
44     void AssertEmpty();
45 #endif
46 
47   private:
48     nsTArray<nsHtml5TreeOperation> mOpQueue;
49     nsTArray<nsHtml5SpeculativeLoad> mSpeculativeLoadQueue;
50     mozilla::Mutex mMutex;
51 
52 };
53 
54 #endif /* nsHtml5TreeOpStage_h */
55