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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ModuleScriptLoader_h | |
6 #define ModuleScriptLoader_h | |
7 | |
8 #include "core/CoreExport.h" | |
9 #include "core/loader/modulescript/ModuleScriptFetchRequest.h" | |
10 #include "core/loader/resource/ScriptResource.h" | |
11 #include "platform/heap/Handle.h" | |
12 #include "platform/loader/fetch/ResourceLoaderOptions.h" | |
13 #include "platform/loader/fetch/ResourceOwner.h" | |
14 #include "platform/weborigin/KURL.h" | |
15 #include "public/platform/WebURLRequest.h" | |
16 | |
17 namespace blink { | |
18 | |
19 class Modulator; | |
20 class ModuleScript; | |
21 class ModuleScriptLoaderClient; | |
22 class ModuleScriptLoaderRegistry; | |
23 enum class ModuleGraphLevel; | |
24 | |
25 // A ModuleScriptLoader is responsible for loading a new single ModuleScript. | |
26 // | |
27 // A ModuleScriptLoader constructs and emits FetchRequest to ResourceFetcher | |
28 // (via ScriptResource::fetch). Then, it keeps track of the fetch progress by | |
29 // being a ScriptResourceClient. Finally, it returns its client a compiled | |
30 // ModuleScript. | |
31 // | |
32 // ModuleLoaders should only be used via Modulator and its ModuleMap. | |
hiroshige
2017/03/06 22:20:21
nit: s/ModuleLoaders/ModuleScriptLoader(s)/?
kouhei (in TOK)
2017/03/23 00:34:01
Done.
| |
33 class CORE_EXPORT ModuleScriptLoader final | |
34 : public GarbageCollectedFinalized<ModuleScriptLoader>, | |
35 public ResourceOwner<ScriptResource> { | |
36 WTF_MAKE_NONCOPYABLE(ModuleScriptLoader); | |
37 USING_GARBAGE_COLLECTED_MIXIN(ModuleScriptLoader); | |
38 | |
39 enum class State { | |
40 Initial, | |
41 // FetchRequest is being processed, and ModuleScriptLoader hasn't | |
42 // notifyFinished(). | |
43 Fetching, | |
44 // Finished successfully or w/ error. | |
45 Finished, | |
46 }; | |
47 | |
48 public: | |
49 static ModuleScriptLoader* create(Modulator* modulator, | |
50 ModuleScriptLoaderRegistry* registry, | |
51 ModuleScriptLoaderClient* client) { | |
52 return new ModuleScriptLoader(modulator, registry, client); | |
53 } | |
54 | |
55 ~ModuleScriptLoader() override; | |
56 | |
57 void fetch(const ModuleScriptFetchRequest&, | |
yhirano
2017/02/28 11:30:11
Please note that the client can be notified synchr
kouhei (in TOK)
2017/03/06 02:10:09
Done.
| |
58 ResourceFetcher*, | |
59 ModuleGraphLevel); | |
60 | |
61 bool isInitialState() const { return m_state == State::Initial; } | |
62 bool hasFinished() const { return m_state == State::Finished; } | |
63 | |
64 DECLARE_TRACE(); | |
65 | |
66 private: | |
67 ModuleScriptLoader(Modulator*, | |
68 ModuleScriptLoaderRegistry*, | |
69 ModuleScriptLoaderClient*); | |
70 | |
71 static ModuleScript* createModuleScript(const String& sourceText, | |
72 const KURL&, | |
73 Modulator*, | |
74 const String& nonce, | |
75 ParserDisposition, | |
76 WebURLRequest::FetchCredentialsMode); | |
77 | |
78 void advanceState(State newState); | |
79 #if DCHECK_IS_ON() | |
80 static const char* stateToString(State); | |
81 #endif | |
82 | |
83 // Implements ScriptResourceClient | |
84 void notifyFinished(Resource*) override; | |
85 String debugName() const override { return "ModuleScriptLoader"; } | |
86 | |
87 static bool wasModuleLoadSuccessful(Resource*); | |
88 | |
89 Member<Modulator> m_modulator; | |
90 State m_state = State::Initial; | |
91 String m_nonce; | |
92 ParserDisposition m_parserState; | |
93 Member<ModuleScript> m_moduleScript; | |
94 Member<ModuleScriptLoaderRegistry> m_registry; | |
95 Member<ModuleScriptLoaderClient> m_client; | |
96 #if DCHECK_IS_ON() | |
97 KURL m_url; | |
98 #endif | |
99 }; | |
100 | |
101 } // namespace blink | |
102 | |
103 #endif | |
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