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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ | 5 #ifndef EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ |
6 #define EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ | 6 #define EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <set> | 9 #include <set> |
10 #include <string> | 10 #include <string> |
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37 // | 37 // |
38 // Note that a ModuleSystem must be used only in conjunction with a single | 38 // Note that a ModuleSystem must be used only in conjunction with a single |
39 // v8::Context. | 39 // v8::Context. |
40 // TODO(koz): Rename this to JavaScriptModuleSystem. | 40 // TODO(koz): Rename this to JavaScriptModuleSystem. |
41 class ModuleSystem : public ObjectBackedNativeHandler, | 41 class ModuleSystem : public ObjectBackedNativeHandler, |
42 public gin::ModuleRegistryObserver { | 42 public gin::ModuleRegistryObserver { |
43 public: | 43 public: |
44 class SourceMap { | 44 class SourceMap { |
45 public: | 45 public: |
46 virtual ~SourceMap() {} | 46 virtual ~SourceMap() {} |
47 virtual v8::Handle<v8::Value> GetSource(v8::Isolate* isolate, | 47 virtual v8::Local<v8::Value> GetSource(v8::Isolate* isolate, |
48 const std::string& name) = 0; | 48 const std::string& name) = 0; |
49 virtual bool Contains(const std::string& name) = 0; | 49 virtual bool Contains(const std::string& name) = 0; |
50 }; | 50 }; |
51 | 51 |
52 class ExceptionHandler { | 52 class ExceptionHandler { |
53 public: | 53 public: |
54 virtual ~ExceptionHandler() {} | 54 virtual ~ExceptionHandler() {} |
55 virtual void HandleUncaughtException(const v8::TryCatch& try_catch) = 0; | 55 virtual void HandleUncaughtException(const v8::TryCatch& try_catch) = 0; |
56 | 56 |
57 protected: | 57 protected: |
58 // Formats |try_catch| as a nice string. | 58 // Formats |try_catch| as a nice string. |
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69 ModuleSystem* module_system_; | 69 ModuleSystem* module_system_; |
70 DISALLOW_COPY_AND_ASSIGN(NativesEnabledScope); | 70 DISALLOW_COPY_AND_ASSIGN(NativesEnabledScope); |
71 }; | 71 }; |
72 | 72 |
73 // |source_map| is a weak pointer. | 73 // |source_map| is a weak pointer. |
74 ModuleSystem(ScriptContext* context, SourceMap* source_map); | 74 ModuleSystem(ScriptContext* context, SourceMap* source_map); |
75 ~ModuleSystem() override; | 75 ~ModuleSystem() override; |
76 | 76 |
77 // Require the specified module. This is the equivalent of calling | 77 // Require the specified module. This is the equivalent of calling |
78 // require('module_name') from the loaded JS files. | 78 // require('module_name') from the loaded JS files. |
79 v8::Handle<v8::Value> Require(const std::string& module_name); | 79 v8::Local<v8::Value> Require(const std::string& module_name); |
80 void Require(const v8::FunctionCallbackInfo<v8::Value>& args); | 80 void Require(const v8::FunctionCallbackInfo<v8::Value>& args); |
81 | 81 |
82 // Run |code| in the current context with the name |name| used for stack | 82 // Run |code| in the current context with the name |name| used for stack |
83 // traces. | 83 // traces. |
84 v8::Handle<v8::Value> RunString(v8::Handle<v8::String> code, | 84 v8::Local<v8::Value> RunString(v8::Local<v8::String> code, |
85 v8::Handle<v8::String> name); | 85 v8::Local<v8::String> name); |
86 | 86 |
87 // Calls the specified method exported by the specified module. This is | 87 // Calls the specified method exported by the specified module. This is |
88 // equivalent to calling require('module_name').method_name() from JS. | 88 // equivalent to calling require('module_name').method_name() from JS. |
89 v8::Local<v8::Value> CallModuleMethod(const std::string& module_name, | 89 v8::Local<v8::Value> CallModuleMethod(const std::string& module_name, |
90 const std::string& method_name); | 90 const std::string& method_name); |
91 v8::Local<v8::Value> CallModuleMethod( | 91 v8::Local<v8::Value> CallModuleMethod( |
92 const std::string& module_name, | 92 const std::string& module_name, |
93 const std::string& method_name, | 93 const std::string& method_name, |
94 std::vector<v8::Handle<v8::Value> >* args); | 94 std::vector<v8::Local<v8::Value>>* args); |
95 v8::Local<v8::Value> CallModuleMethod(const std::string& module_name, | 95 v8::Local<v8::Value> CallModuleMethod(const std::string& module_name, |
96 const std::string& method_name, | 96 const std::string& method_name, |
97 int argc, | 97 int argc, |
98 v8::Handle<v8::Value> argv[]); | 98 v8::Local<v8::Value> argv[]); |
99 | 99 |
100 // Register |native_handler| as a potential target for requireNative(), so | 100 // Register |native_handler| as a potential target for requireNative(), so |
101 // calls to requireNative(|name|) from JS will return a new object created by | 101 // calls to requireNative(|name|) from JS will return a new object created by |
102 // |native_handler|. | 102 // |native_handler|. |
103 void RegisterNativeHandler(const std::string& name, | 103 void RegisterNativeHandler(const std::string& name, |
104 scoped_ptr<NativeHandler> native_handler); | 104 scoped_ptr<NativeHandler> native_handler); |
105 | 105 |
106 // Causes requireNative(|name|) to look for its module in |source_map_| | 106 // Causes requireNative(|name|) to look for its module in |source_map_| |
107 // instead of using a registered native handler. This can be used in unit | 107 // instead of using a registered native handler. This can be used in unit |
108 // tests to mock out native modules. | 108 // tests to mock out native modules. |
109 void OverrideNativeHandlerForTest(const std::string& name); | 109 void OverrideNativeHandlerForTest(const std::string& name); |
110 | 110 |
111 // Executes |code| in the current context with |name| as the filename. | 111 // Executes |code| in the current context with |name| as the filename. |
112 void RunString(const std::string& code, const std::string& name); | 112 void RunString(const std::string& code, const std::string& name); |
113 | 113 |
114 // Make |object|.|field| lazily evaluate to the result of | 114 // Make |object|.|field| lazily evaluate to the result of |
115 // require(|module_name|)[|module_field|]. | 115 // require(|module_name|)[|module_field|]. |
116 // | 116 // |
117 // TODO(kalman): All targets for this method are ObjectBackedNativeHandlers, | 117 // TODO(kalman): All targets for this method are ObjectBackedNativeHandlers, |
118 // move this logic into those classes (in fact, the chrome | 118 // move this logic into those classes (in fact, the chrome |
119 // object is the only client, only that needs to implement it). | 119 // object is the only client, only that needs to implement it). |
120 void SetLazyField(v8::Handle<v8::Object> object, | 120 void SetLazyField(v8::Local<v8::Object> object, |
121 const std::string& field, | 121 const std::string& field, |
122 const std::string& module_name, | 122 const std::string& module_name, |
123 const std::string& module_field); | 123 const std::string& module_field); |
124 | 124 |
125 void SetLazyField(v8::Handle<v8::Object> object, | 125 void SetLazyField(v8::Local<v8::Object> object, |
126 const std::string& field, | 126 const std::string& field, |
127 const std::string& module_name, | 127 const std::string& module_name, |
128 const std::string& module_field, | 128 const std::string& module_field, |
129 v8::AccessorGetterCallback getter); | 129 v8::AccessorGetterCallback getter); |
130 | 130 |
131 // Make |object|.|field| lazily evaluate to the result of | 131 // Make |object|.|field| lazily evaluate to the result of |
132 // requireNative(|module_name|)[|module_field|]. | 132 // requireNative(|module_name|)[|module_field|]. |
133 // TODO(kalman): Same as above. | 133 // TODO(kalman): Same as above. |
134 void SetNativeLazyField(v8::Handle<v8::Object> object, | 134 void SetNativeLazyField(v8::Local<v8::Object> object, |
135 const std::string& field, | 135 const std::string& field, |
136 const std::string& module_name, | 136 const std::string& module_name, |
137 const std::string& module_field); | 137 const std::string& module_field); |
138 | 138 |
139 // Passes exceptions to |handler| rather than console::Fatal. | 139 // Passes exceptions to |handler| rather than console::Fatal. |
140 void SetExceptionHandlerForTest(scoped_ptr<ExceptionHandler> handler) { | 140 void SetExceptionHandlerForTest(scoped_ptr<ExceptionHandler> handler) { |
141 exception_handler_ = handler.Pass(); | 141 exception_handler_ = handler.Pass(); |
142 } | 142 } |
143 | 143 |
144 protected: | 144 protected: |
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155 // Retrieves the lazily defined field specified by |property| on a native | 155 // Retrieves the lazily defined field specified by |property| on a native |
156 // object. | 156 // object. |
157 static void NativeLazyFieldGetter( | 157 static void NativeLazyFieldGetter( |
158 v8::Local<v8::String> property, | 158 v8::Local<v8::String> property, |
159 const v8::PropertyCallbackInfo<v8::Value>& info); | 159 const v8::PropertyCallbackInfo<v8::Value>& info); |
160 | 160 |
161 // Called when an exception is thrown but not caught. | 161 // Called when an exception is thrown but not caught. |
162 void HandleException(const v8::TryCatch& try_catch); | 162 void HandleException(const v8::TryCatch& try_catch); |
163 | 163 |
164 void RequireForJs(const v8::FunctionCallbackInfo<v8::Value>& args); | 164 void RequireForJs(const v8::FunctionCallbackInfo<v8::Value>& args); |
165 v8::Local<v8::Value> RequireForJsInner(v8::Handle<v8::String> module_name); | 165 v8::Local<v8::Value> RequireForJsInner(v8::Local<v8::String> module_name); |
166 | 166 |
167 typedef v8::Handle<v8::Value>(ModuleSystem::*RequireFunction)( | 167 typedef v8::Local<v8::Value>(ModuleSystem::*RequireFunction)( |
168 const std::string&); | 168 const std::string&); |
169 // Base implementation of a LazyFieldGetter which uses |require_fn| to require | 169 // Base implementation of a LazyFieldGetter which uses |require_fn| to require |
170 // modules. | 170 // modules. |
171 static void LazyFieldGetterInner( | 171 static void LazyFieldGetterInner( |
172 v8::Local<v8::String> property, | 172 v8::Local<v8::String> property, |
173 const v8::PropertyCallbackInfo<v8::Value>& info, | 173 const v8::PropertyCallbackInfo<v8::Value>& info, |
174 RequireFunction require_function); | 174 RequireFunction require_function); |
175 | 175 |
176 // Return the named source file stored in the source map. | 176 // Return the named source file stored in the source map. |
177 // |args[0]| - the name of a source file in source_map_. | 177 // |args[0]| - the name of a source file in source_map_. |
178 v8::Handle<v8::Value> GetSource(const std::string& module_name); | 178 v8::Local<v8::Value> GetSource(const std::string& module_name); |
179 | 179 |
180 // Return an object that contains the native methods defined by the named | 180 // Return an object that contains the native methods defined by the named |
181 // NativeHandler. | 181 // NativeHandler. |
182 // |args[0]| - the name of a native handler object. | 182 // |args[0]| - the name of a native handler object. |
183 v8::Handle<v8::Value> RequireNativeFromString(const std::string& native_name); | 183 v8::Local<v8::Value> RequireNativeFromString(const std::string& native_name); |
184 void RequireNative(const v8::FunctionCallbackInfo<v8::Value>& args); | 184 void RequireNative(const v8::FunctionCallbackInfo<v8::Value>& args); |
185 | 185 |
186 // Return a promise for a requested module. | 186 // Return a promise for a requested module. |
187 // |args[0]| - the name of a module. | 187 // |args[0]| - the name of a module. |
188 void RequireAsync(const v8::FunctionCallbackInfo<v8::Value>& args); | 188 void RequireAsync(const v8::FunctionCallbackInfo<v8::Value>& args); |
189 | 189 |
190 // Wraps |source| in a (function(define, require, requireNative, ...) {...}). | 190 // Wraps |source| in a (function(define, require, requireNative, ...) {...}). |
191 v8::Handle<v8::String> WrapSource(v8::Handle<v8::String> source); | 191 v8::Local<v8::String> WrapSource(v8::Local<v8::String> source); |
192 | 192 |
193 // NativeHandler implementation which returns the private area of an Object. | 193 // NativeHandler implementation which returns the private area of an Object. |
194 void Private(const v8::FunctionCallbackInfo<v8::Value>& args); | 194 void Private(const v8::FunctionCallbackInfo<v8::Value>& args); |
195 | 195 |
196 // Loads and runs a Javascript module. | 196 // Loads and runs a Javascript module. |
197 v8::Handle<v8::Value> LoadModule(const std::string& module_name); | 197 v8::Local<v8::Value> LoadModule(const std::string& module_name); |
198 | 198 |
199 // Invoked when a module is loaded in response to a requireAsync call. | 199 // Invoked when a module is loaded in response to a requireAsync call. |
200 // Resolves |resolver| with |value|. | 200 // Resolves |resolver| with |value|. |
201 void OnModuleLoaded(scoped_ptr<v8::Global<v8::Promise::Resolver>> resolver, | 201 void OnModuleLoaded(scoped_ptr<v8::Global<v8::Promise::Resolver>> resolver, |
202 v8::Handle<v8::Value> value); | 202 v8::Local<v8::Value> value); |
203 | 203 |
204 // gin::ModuleRegistryObserver overrides. | 204 // gin::ModuleRegistryObserver overrides. |
205 void OnDidAddPendingModule( | 205 void OnDidAddPendingModule( |
206 const std::string& id, | 206 const std::string& id, |
207 const std::vector<std::string>& dependencies) override; | 207 const std::vector<std::string>& dependencies) override; |
208 | 208 |
209 // Marks any existing NativeHandler named |name| as clobbered. | 209 // Marks any existing NativeHandler named |name| as clobbered. |
210 // See |clobbered_native_handlers_|. | 210 // See |clobbered_native_handlers_|. |
211 void ClobberExistingNativeHandler(const std::string& name); | 211 void ClobberExistingNativeHandler(const std::string& name); |
212 | 212 |
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238 std::vector<linked_ptr<NativeHandler>> clobbered_native_handlers_; | 238 std::vector<linked_ptr<NativeHandler>> clobbered_native_handlers_; |
239 | 239 |
240 base::WeakPtrFactory<ModuleSystem> weak_factory_; | 240 base::WeakPtrFactory<ModuleSystem> weak_factory_; |
241 | 241 |
242 DISALLOW_COPY_AND_ASSIGN(ModuleSystem); | 242 DISALLOW_COPY_AND_ASSIGN(ModuleSystem); |
243 }; | 243 }; |
244 | 244 |
245 } // namespace extensions | 245 } // namespace extensions |
246 | 246 |
247 #endif // EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ | 247 #endif // EXTENSIONS_RENDERER_MODULE_SYSTEM_H_ |
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