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1 /* | 1 /* |
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. | 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
(...skipping 10 matching lines...) Expand all Loading... | |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef PendingScript_h | 26 #ifndef PendingScript_h |
27 #define PendingScript_h | 27 #define PendingScript_h |
28 | 28 |
29 #include "bindings/core/v8/ScriptStreamer.h" | 29 #include "bindings/core/v8/ScriptStreamer.h" |
30 #include "core/CoreExport.h" | 30 #include "core/CoreExport.h" |
31 #include "core/dom/Script.h" | |
31 #include "core/dom/ScriptElementBase.h" | 32 #include "core/dom/ScriptElementBase.h" |
32 #include "core/loader/resource/ScriptResource.h" | |
33 #include "platform/MemoryCoordinator.h" | |
34 #include "platform/heap/Handle.h" | 33 #include "platform/heap/Handle.h" |
35 #include "platform/loader/fetch/ResourceOwner.h" | 34 #include "platform/weborigin/KURL.h" |
36 #include "platform/wtf/Noncopyable.h" | 35 #include "platform/wtf/Noncopyable.h" |
37 #include "platform/wtf/text/TextPosition.h" | 36 #include "platform/wtf/text/TextPosition.h" |
38 | 37 |
39 namespace blink { | 38 namespace blink { |
40 | 39 |
40 class Document; | |
41 class PendingScript; | 41 class PendingScript; |
42 class ClassicScript; | |
43 | 42 |
44 class CORE_EXPORT PendingScriptClient : public GarbageCollectedMixin { | 43 class CORE_EXPORT PendingScriptClient : public GarbageCollectedMixin { |
45 public: | 44 public: |
46 virtual ~PendingScriptClient() {} | 45 virtual ~PendingScriptClient() {} |
47 | 46 |
48 // Invoked when the pending script has finished loading. This could be during | 47 // Invoked when the pending script has finished loading. This could be during |
49 // |watchForLoad| (if the pending script was already ready), or when the | 48 // |watchForLoad| (if the pending script was already ready), or when the |
50 // resource loads (if script streaming is not occurring), or when script | 49 // resource loads (if script streaming is not occurring), or when script |
51 // streaming finishes. | 50 // streaming finishes. |
52 virtual void PendingScriptFinished(PendingScript*) = 0; | 51 virtual void PendingScriptFinished(PendingScript*) = 0; |
53 | 52 |
54 DEFINE_INLINE_VIRTUAL_TRACE() {} | 53 DEFINE_INLINE_VIRTUAL_TRACE() {} |
55 }; | 54 }; |
56 | 55 |
57 // A container for an external script which may be loaded and executed. | 56 class CORE_EXPORT PendingScript |
haraken
2017/04/13 01:03:58
Add a class-level comment.
hiroshige
2017/04/13 17:08:31
Done.
| |
58 // | 57 : public GarbageCollectedFinalized<PendingScript> { |
59 // TODO(kochi): The comment below is from pre-oilpan age and may not be correct | |
60 // now. | |
61 // A RefPtr alone does not prevent the underlying Resource from purging its data | |
62 // buffer. This class holds a dummy client open for its lifetime in order to | |
63 // guarantee that the data buffer will not be purged. | |
64 class CORE_EXPORT PendingScript final | |
65 : public GarbageCollectedFinalized<PendingScript>, | |
66 public ResourceOwner<ScriptResource>, | |
67 public MemoryCoordinatorClient { | |
68 USING_GARBAGE_COLLECTED_MIXIN(PendingScript); | |
69 USING_PRE_FINALIZER(PendingScript, Dispose); | 58 USING_PRE_FINALIZER(PendingScript, Dispose); |
70 WTF_MAKE_NONCOPYABLE(PendingScript); | 59 WTF_MAKE_NONCOPYABLE(PendingScript); |
71 | 60 |
72 public: | 61 public: |
73 // For script from an external file. | 62 virtual ~PendingScript(); |
74 static PendingScript* Create(ScriptElementBase*, ScriptResource*); | |
75 // For inline script. | |
76 static PendingScript* Create(ScriptElementBase*, const TextPosition&); | |
77 | |
78 static PendingScript* CreateForTesting(ScriptResource*); | |
79 | |
80 ~PendingScript() override; | |
81 | 63 |
82 TextPosition StartingPosition() const { return starting_position_; } | 64 TextPosition StartingPosition() const { return starting_position_; } |
83 void MarkParserBlockingLoadStartTime(); | 65 void MarkParserBlockingLoadStartTime(); |
84 // Returns the time the load of this script started blocking the parser, or | 66 // Returns the time the load of this script started blocking the parser, or |
85 // zero if this script hasn't yet blocked the parser, in | 67 // zero if this script hasn't yet blocked the parser, in |
86 // monotonicallyIncreasingTime. | 68 // monotonicallyIncreasingTime. |
87 double ParserBlockingLoadStartTime() const { | 69 double ParserBlockingLoadStartTime() const { |
88 return parser_blocking_load_start_time_; | 70 return parser_blocking_load_start_time_; |
89 } | 71 } |
90 | 72 |
91 void WatchForLoad(PendingScriptClient*); | 73 void WatchForLoad(PendingScriptClient*); |
92 void StopWatchingForLoad(); | 74 void StopWatchingForLoad(); |
93 | 75 |
94 ScriptElementBase* GetElement() const; | 76 ScriptElementBase* GetElement() const; |
95 | 77 |
96 DECLARE_TRACE(); | 78 virtual ScriptType GetScriptType() const = 0; |
97 | 79 |
98 ClassicScript* GetSource(const KURL& document_url, | 80 DECLARE_VIRTUAL_TRACE(); |
99 bool& error_occurred) const; | |
100 | 81 |
101 void SetStreamer(ScriptStreamer*); | 82 virtual Script* GetSource(const KURL& document_url, |
102 void StreamingFinished(); | 83 bool& error_occurred) const = 0; |
103 | 84 |
104 bool IsReady() const; | 85 // https://html.spec.whatwg.org/#the-script-is-ready |
105 bool ErrorOccurred() const; | 86 virtual bool IsReady() const = 0; |
106 | 87 |
107 void StartStreamingIfPossible(Document*, ScriptStreamer::Type); | 88 virtual KURL Url() const = 0; |
89 virtual bool IsExternal() const = 0; | |
90 virtual bool ErrorOccurred() const = 0; | |
91 virtual bool WasCanceled() const = 0; | |
92 virtual void StartStreamingIfPossible(Document*, ScriptStreamer::Type) = 0; | |
93 | |
94 // Used for document.write() intervention. | |
95 // Has effects only for classic scripts. | |
96 virtual void RemoveFromMemoryCache() = 0; | |
97 | |
108 void Dispose(); | 98 void Dispose(); |
109 | 99 |
100 protected: | |
101 PendingScript(ScriptElementBase*, const TextPosition& starting_position); | |
102 | |
103 virtual void DisposeInternal() = 0; | |
104 | |
105 PendingScriptClient* Client() { return client_; } | |
106 bool IsWatchingForLoad() const { return watching_for_load_; } | |
107 | |
108 virtual void CheckState() const = 0; | |
109 | |
110 private: | 110 private: |
111 PendingScript(ScriptElementBase*, | |
112 ScriptResource*, | |
113 const TextPosition&, | |
114 bool is_for_testing = false); | |
115 PendingScript() = delete; | |
116 | |
117 void CheckState() const; | |
118 | |
119 // ScriptResourceClient | |
120 void NotifyFinished(Resource*) override; | |
121 String DebugName() const override { return "PendingScript"; } | |
122 void NotifyAppendData(ScriptResource*) override; | |
123 | |
124 // MemoryCoordinatorClient | |
125 void OnPurgeMemory() override; | |
126 | |
127 bool watching_for_load_; | 111 bool watching_for_load_; |
128 | 112 |
129 // |m_element| must points to the corresponding ScriptLoader's | 113 // |m_element| must points to the corresponding ScriptLoader's |
130 // ScriptElementBase and thus must be non-null before dispose() is called | 114 // ScriptElementBase and thus must be non-null before dispose() is called |
131 // (except for unit tests). | 115 // (except for unit tests). |
132 Member<ScriptElementBase> element_; | 116 Member<ScriptElementBase> element_; |
133 | 117 |
134 TextPosition starting_position_; // Only used for inline script tags. | 118 TextPosition starting_position_; // Only used for inline script tags. |
135 bool integrity_failure_; | |
136 double parser_blocking_load_start_time_; | 119 double parser_blocking_load_start_time_; |
137 | 120 |
138 Member<ScriptStreamer> streamer_; | |
139 Member<PendingScriptClient> client_; | 121 Member<PendingScriptClient> client_; |
140 | |
141 // This flag is used to skip non-null checks of |m_element| in unit | |
142 // tests, because |m_element| can be null in unit tests. | |
143 const bool is_for_testing_; | |
144 }; | 122 }; |
145 | 123 |
146 } // namespace blink | 124 } // namespace blink |
147 | 125 |
148 #endif // PendingScript_h | 126 #endif // PendingScript_h |
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