1 | /* |
2 | * Copyright (C) 2010 Google, Inc. All Rights Reserved. |
3 | * Copyright (C) 2011-2017 Apple Inc. All rights reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
8 | * 1. Redistributions of source code must retain the above copyright |
9 | * notice, this list of conditions and the following disclaimer. |
10 | * 2. Redistributions in binary form must reproduce the above copyright |
11 | * notice, this list of conditions and the following disclaimer in the |
12 | * documentation and/or other materials provided with the distribution. |
13 | * |
14 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | */ |
26 | |
27 | #pragma once |
28 | |
29 | #include "PendingScriptClient.h" |
30 | #include "Timer.h" |
31 | #include <wtf/HashSet.h> |
32 | #include <wtf/Vector.h> |
33 | |
34 | namespace WebCore { |
35 | |
36 | class Document; |
37 | class ScriptElement; |
38 | class LoadableScript; |
39 | |
40 | class ScriptRunner : private PendingScriptClient { |
41 | WTF_MAKE_NONCOPYABLE(ScriptRunner); WTF_MAKE_FAST_ALLOCATED; |
42 | public: |
43 | explicit ScriptRunner(Document&); |
44 | ~ScriptRunner(); |
45 | |
46 | enum ExecutionType { ASYNC_EXECUTION, IN_ORDER_EXECUTION }; |
47 | void queueScriptForExecution(ScriptElement&, LoadableScript&, ExecutionType); |
48 | bool hasPendingScripts() const { return !m_scriptsToExecuteSoon.isEmpty() || !m_scriptsToExecuteInOrder.isEmpty() || !m_pendingAsyncScripts.isEmpty(); } |
49 | void suspend(); |
50 | void resume(); |
51 | void notifyScriptReady(ScriptElement*, ExecutionType); |
52 | |
53 | void didBeginYieldingParser() { suspend(); } |
54 | void didEndYieldingParser() { resume(); } |
55 | |
56 | void documentFinishedParsing(); |
57 | |
58 | private: |
59 | void timerFired(); |
60 | |
61 | void notifyFinished(PendingScript&) override; |
62 | |
63 | Document& m_document; |
64 | Vector<Ref<PendingScript>> m_scriptsToExecuteInOrder; |
65 | Vector<RefPtr<PendingScript>> m_scriptsToExecuteSoon; // http://www.whatwg.org/specs/web-apps/current-work/#set-of-scripts-that-will-execute-as-soon-as-possible |
66 | HashSet<Ref<PendingScript>> m_pendingAsyncScripts; |
67 | Timer m_timer; |
68 | }; |
69 | |
70 | } |
71 | |