1 // Copyright 2013 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 GIN_RUNNER_H_ 6 #define GIN_RUNNER_H_ 7 8 #include <string> 9 10 #include "base/memory/weak_ptr.h" 11 #include "gin/gin_export.h" 12 #include "gin/public/context_holder.h" 13 #include "v8/include/v8.h" 14 15 namespace gin { 16 17 // Runner is responsible for running code in a v8::Context. 18 class GIN_EXPORT Runner { 19 public: 20 Runner(); 21 virtual ~Runner(); 22 23 // Before running script in this context, you'll need to enter the runner's 24 // context by creating an instance of Runner::Scope on the stack. 25 virtual void Run(const std::string& source, 26 const std::string& resource_name) = 0; 27 virtual v8::Handle<v8::Value> Call(v8::Handle<v8::Function> function, 28 v8::Handle<v8::Value> receiver, 29 int argc, 30 v8::Handle<v8::Value> argv[]) = 0; 31 virtual ContextHolder* GetContextHolder() = 0; 32 33 v8::Handle<v8::Object> global() { 34 return GetContextHolder()->context()->Global(); 35 } 36 37 // Useful for running script in this context asynchronously. Rather than 38 // holding a raw pointer to the runner, consider holding a WeakPtr. 39 base::WeakPtr<Runner> GetWeakPtr() { 40 return weak_factory_.GetWeakPtr(); 41 } 42 43 class GIN_EXPORT Scope { 44 public: 45 explicit Scope(Runner* runner); 46 ~Scope(); 47 48 private: 49 v8::Isolate::Scope isolate_scope_; 50 v8::HandleScope handle_scope_; 51 v8::Context::Scope scope_; 52 53 DISALLOW_COPY_AND_ASSIGN(Scope); 54 }; 55 56 private: 57 friend class Scope; 58 59 base::WeakPtrFactory<Runner> weak_factory_; 60 61 DISALLOW_COPY_AND_ASSIGN(Runner); 62 }; 63 64 } // namespace gin 65 66 #endif // GIN_RUNNER_H_ 67
