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| 1 /* | 1 /* | 
| 2  * This file is part of Adblock Plus <https://adblockplus.org/>, | 2  * This file is part of Adblock Plus <https://adblockplus.org/>, | 
| 3  * Copyright (C) 2006-2017 eyeo GmbH | 3  * Copyright (C) 2006-2017 eyeo GmbH | 
| 4  * | 4  * | 
| 5  * Adblock Plus is free software: you can redistribute it and/or modify | 5  * Adblock Plus is free software: you can redistribute it and/or modify | 
| 6  * it under the terms of the GNU General Public License version 3 as | 6  * it under the terms of the GNU General Public License version 3 as | 
| 7  * published by the Free Software Foundation. | 7  * published by the Free Software Foundation. | 
| 8  * | 8  * | 
| 9  * Adblock Plus is distributed in the hope that it will be useful, | 9  * Adblock Plus is distributed in the hope that it will be useful, | 
| 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10  * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 27 #include <mutex> | 27 #include <mutex> | 
| 28 #include <AdblockPlus/AppInfo.h> | 28 #include <AdblockPlus/AppInfo.h> | 
| 29 #include <AdblockPlus/LogSystem.h> | 29 #include <AdblockPlus/LogSystem.h> | 
| 30 #include <AdblockPlus/FileSystem.h> | 30 #include <AdblockPlus/FileSystem.h> | 
| 31 #include <AdblockPlus/JsValue.h> | 31 #include <AdblockPlus/JsValue.h> | 
| 32 #include <AdblockPlus/WebRequest.h> | 32 #include <AdblockPlus/WebRequest.h> | 
| 33 #include <AdblockPlus/ITimer.h> | 33 #include <AdblockPlus/ITimer.h> | 
| 34 | 34 | 
| 35 namespace v8 | 35 namespace v8 | 
| 36 { | 36 { | 
| 37   class Arguments; |  | 
| 38   class Isolate; | 37   class Isolate; | 
| 39   class Value; | 38   class Value; | 
| 40   class Context; | 39   class Context; | 
| 41   template<class T> class Handle; | 40   template<typename T> class FunctionCallbackInfo; | 
| 42   typedef Handle<Value>(*InvocationCallback)(const Arguments &args); | 41   typedef void(*FunctionCallback)(const FunctionCallbackInfo<v8::Value>& info); | 
| 43 } | 42 } | 
| 44 | 43 | 
| 45 namespace AdblockPlus | 44 namespace AdblockPlus | 
| 46 { | 45 { | 
| 47   class JsEngine; | 46   class JsEngine; | 
| 48 | 47 | 
| 49   /** | 48   /** | 
| 50    * Shared smart pointer to a `JsEngine` instance. | 49    * Shared smart pointer to a `JsEngine` instance. | 
| 51    */ | 50    */ | 
| 52   typedef std::shared_ptr<JsEngine> JsEnginePtr; | 51   typedef std::shared_ptr<JsEngine> JsEnginePtr; | 
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| 85    * JavaScript engine used by `FilterEngine`, wraps v8. | 84    * JavaScript engine used by `FilterEngine`, wraps v8. | 
| 86    */ | 85    */ | 
| 87   class JsEngine : public std::enable_shared_from_this<JsEngine> | 86   class JsEngine : public std::enable_shared_from_this<JsEngine> | 
| 88   { | 87   { | 
| 89     friend class JsValue; | 88     friend class JsValue; | 
| 90     friend class JsContext; | 89     friend class JsContext; | 
| 91 | 90 | 
| 92     struct JsWeakValuesList | 91     struct JsWeakValuesList | 
| 93     { | 92     { | 
| 94       ~JsWeakValuesList(); | 93       ~JsWeakValuesList(); | 
| 95       std::vector<std::unique_ptr<v8::Persistent<v8::Value>>> values; | 94       std::vector<v8::Global<v8::Value>> values; | 
| 96     }; | 95     }; | 
| 97     typedef std::list<JsWeakValuesList> JsWeakValuesLists; | 96     typedef std::list<JsWeakValuesList> JsWeakValuesLists; | 
| 98   public: | 97   public: | 
| 99     /** | 98     /** | 
| 100      * Event callback function. | 99      * Event callback function. | 
| 101      */ | 100      */ | 
| 102     typedef std::function<void(JsValueList&& params)> EventCallback; | 101     typedef std::function<void(JsValueList&& params)> EventCallback; | 
| 103 | 102 | 
| 104     /** | 103     /** | 
| 105      * Maps events to callback functions. | 104      * Maps events to callback functions. | 
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| 192 | 191 | 
| 193     /** | 192     /** | 
| 194      * Creates a new JavaScript object. | 193      * Creates a new JavaScript object. | 
| 195      * @return New `JsValue` instance. | 194      * @return New `JsValue` instance. | 
| 196      */ | 195      */ | 
| 197     JsValue NewObject(); | 196     JsValue NewObject(); | 
| 198 | 197 | 
| 199     /** | 198     /** | 
| 200      * Creates a JavaScript function that invokes a C++ callback. | 199      * Creates a JavaScript function that invokes a C++ callback. | 
| 201      * @param callback C++ callback to invoke. The callback receives a | 200      * @param callback C++ callback to invoke. The callback receives a | 
| 202      *        `v8::Arguments` object and can use `FromArguments()` to retrieve | 201      *        `v8::FunctionCallbackInfo` object and can use `FromArguments()` to
      retrieve | 
| 203      *        the current `JsEngine`. | 202      *        the current `JsEngine`. | 
| 204      * @return New `JsValue` instance. | 203      * @return New `JsValue` instance. | 
| 205      */ | 204      */ | 
| 206     JsValue NewCallback(const v8::InvocationCallback& callback); | 205     JsValue NewCallback(const v8::FunctionCallback& callback); | 
| 207 | 206 | 
| 208     /** | 207     /** | 
| 209      * Returns a `JsEngine` instance contained in a `v8::Arguments` object. | 208      * Returns a `JsEngine` instance contained in a `v8::FunctionCallbackInfo` o
     bject. | 
| 210      * Use this in callbacks created via `NewCallback()` to retrieve the current | 209      * Use this in callbacks created via `NewCallback()` to retrieve the current | 
| 211      * `JsEngine`. | 210      * `JsEngine`. | 
| 212      * @param arguments `v8::Arguments` object containing the `JsEngine` | 211      * @param arguments `v8::FunctionCallbackInfo` object containing the `JsEngi
     ne` | 
| 213      *        instance. | 212      *        instance. | 
| 214      * @return `JsEngine` instance from `v8::Arguments`. | 213      * @return `JsEngine` instance from `v8::FunctionCallbackInfo`. | 
| 215      */ | 214      */ | 
| 216     static JsEnginePtr FromArguments(const v8::Arguments& arguments); | 215     static JsEnginePtr FromArguments(const v8::FunctionCallbackInfo<v8::Value>& 
     arguments); | 
| 217 | 216 | 
| 218     /** | 217     /** | 
| 219      * Stores `JsValue`s in a way they don't keep a strong reference to | 218      * Stores `JsValue`s in a way they don't keep a strong reference to | 
| 220      * `JsEngine` and which are destroyed when `JsEngine` is destroyed. These | 219      * `JsEngine` and which are destroyed when `JsEngine` is destroyed. These | 
| 221      * methods should be used when one needs to carry a JsValue in a callback | 220      * methods should be used when one needs to carry a JsValue in a callback | 
| 222      * directly or indirectly passed to `JsEngine`. | 221      * directly or indirectly passed to `JsEngine`. | 
| 223      * The method is thread-safe. | 222      * The method is thread-safe. | 
| 224      * @param `JsValueList` to store. | 223      * @param `JsValueList` to store. | 
| 225      * @return `JsWeakValuesID` of stored values which allows to restore them | 224      * @return `JsWeakValuesID` of stored values which allows to restore them | 
| 226      * later. | 225      * later. | 
| 227      */ | 226      */ | 
| 228     JsWeakValuesID StoreJsValues(const JsValueList& values); | 227     JsWeakValuesID StoreJsValues(const JsValueList& values); | 
| 229 | 228 | 
| 230     /** | 229     /** | 
| 231      * Extracts and removes from `JsEngine` earlier stored `JsValue`s. | 230      * Extracts and removes from `JsEngine` earlier stored `JsValue`s. | 
| 232      * The method is thread-safe. | 231      * The method is thread-safe. | 
| 233      * @param id `JsWeakValuesID` of values. | 232      * @param id `JsWeakValuesID` of values. | 
| 234      * @return `JsValueList` of stored values. | 233      * @return `JsValueList` of stored values. | 
| 235      */ | 234      */ | 
| 236     JsValueList TakeJsValues(const JsWeakValuesID& id); | 235     JsValueList TakeJsValues(const JsWeakValuesID& id); | 
| 237 | 236 | 
| 238     /* | 237     /* | 
| 239      * Private functionality required to implement timers. | 238      * Private functionality required to implement timers. | 
| 240      * @param arguments `v8::Arguments` is the arguments received in C++ | 239      * @param arguments `v8::FunctionCallbackInfo` is the arguments received in 
     C++ | 
| 241      * callback associated for global setTimeout method. | 240      * callback associated for global setTimeout method. | 
| 242      */ | 241      */ | 
| 243     static void ScheduleTimer(const v8::Arguments& arguments); | 242     static void ScheduleTimer(const v8::FunctionCallbackInfo<v8::Value>& argumen
     ts); | 
| 244 | 243 | 
| 245     /* | 244     /* | 
| 246      * Private functionality required to implement web requests. | 245      * Private functionality required to implement web requests. | 
| 247      * @param arguments `v8::Arguments` is the arguments received in C++ | 246      * @param arguments `v8::FunctionCallbackInfo` is the arguments received in 
     C++ | 
| 248      * callback associated for global GET method. | 247      * callback associated for global GET method. | 
| 249      */ | 248      */ | 
| 250     static void ScheduleWebRequest(const v8::Arguments& arguments); | 249     static void ScheduleWebRequest(const v8::FunctionCallbackInfo<v8::Value>& ar
     guments); | 
| 251 | 250 | 
| 252     /** | 251     /** | 
| 253      * Converts v8 arguments to `JsValue` objects. | 252      * Converts v8 arguments to `JsValue` objects. | 
| 254      * @param arguments `v8::Arguments` object containing the arguments to | 253      * @param arguments `v8::FunctionCallbackInfo` object containing the argumen
     ts to | 
| 255      *        convert. | 254      *        convert. | 
| 256      * @return List of arguments converted to `const JsValue` objects. | 255      * @return List of arguments converted to `const JsValue` objects. | 
| 257      */ | 256      */ | 
| 258     JsValueList ConvertArguments(const v8::Arguments& arguments); | 257     JsValueList ConvertArguments(const v8::FunctionCallbackInfo<v8::Value>& argu
     ments); | 
| 259 | 258 | 
| 260     /** | 259     /** | 
| 261      * @see `SetFileSystem()`. | 260      * @see `SetFileSystem()`. | 
| 262      */ | 261      */ | 
| 263     FileSystemPtr GetFileSystem() const; | 262     FileSystemPtr GetFileSystem() const; | 
| 264 | 263 | 
| 265     /** | 264     /** | 
| 266      * Sets the `FileSystem` implementation used for all file I/O. | 265      * Sets the `FileSystem` implementation used for all file I/O. | 
| 267      * Setting this is optional, the engine will use a `DefaultFileSystem` | 266      * Setting this is optional, the engine will use a `DefaultFileSystem` | 
| 268      * instance by default, which might be sufficient. | 267      * instance by default, which might be sufficient. | 
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| 318     explicit JsEngine(TimerPtr timer, WebRequestPtr webRequest); | 317     explicit JsEngine(TimerPtr timer, WebRequestPtr webRequest); | 
| 319 | 318 | 
| 320     JsValue GetGlobalObject(); | 319     JsValue GetGlobalObject(); | 
| 321 | 320 | 
| 322     /// Isolate must be disposed only after disposing of all objects which are | 321     /// Isolate must be disposed only after disposing of all objects which are | 
| 323     /// using it. | 322     /// using it. | 
| 324     ScopedV8Isolate isolate; | 323     ScopedV8Isolate isolate; | 
| 325 | 324 | 
| 326     FileSystemPtr fileSystem; | 325     FileSystemPtr fileSystem; | 
| 327     LogSystemPtr logSystem; | 326     LogSystemPtr logSystem; | 
| 328     std::unique_ptr<v8::Persistent<v8::Context>> context; | 327     std::unique_ptr<v8::Global<v8::Context>> context; | 
| 329     EventMap eventCallbacks; | 328     EventMap eventCallbacks; | 
| 330     std::mutex eventCallbacksMutex; | 329     std::mutex eventCallbacksMutex; | 
| 331     JsWeakValuesLists jsWeakValuesLists; | 330     JsWeakValuesLists jsWeakValuesLists; | 
| 332     std::mutex jsWeakValuesListsMutex; | 331     std::mutex jsWeakValuesListsMutex; | 
| 333     TimerPtr timer; | 332     TimerPtr timer; | 
| 334     WebRequestPtr webRequest; | 333     WebRequestPtr webRequest; | 
| 335     WebRequestSharedPtr webRequestLegacy; | 334     WebRequestSharedPtr webRequestLegacy; | 
| 336   }; | 335   }; | 
| 337 } | 336 } | 
| 338 | 337 | 
| 339 #endif | 338 #endif | 
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