Use WebScopedRunV8Script in converted C++ functions

atom/common/api/event_emitter_caller.h

@@ -0,0 +1,53 @@
+// Copyright (c) 2015 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#ifndef ATOM_COMMON_API_EVENT_EMITTER_CALLER_H_
+#define ATOM_COMMON_API_EVENT_EMITTER_CALLER_H_
+
+#include <vector>
+
+#include "native_mate/converter.h"
+
+namespace mate {
+
+namespace internal {
+
+using ValueVector = std::vector<v8::Local<v8::Value>>;
+
+v8::Local<v8::Value> CallEmitWithArgs(v8::Isolate* isolate,
+                                      v8::Local<v8::Object> obj,
+                                      ValueVector* args);
+
+}  // namespace internal
+
+// obj.emit.apply(obj, name, args...);
+// The caller is responsible of allocating a HandleScope.
+template<typename StringType, typename... Args>
+v8::Local<v8::Value> EmitEvent(v8::Isolate* isolate,
+                               v8::Local<v8::Object> obj,
+                               const StringType& name,
+                               const internal::ValueVector& args) {
+  internal::ValueVector concatenated_args = { StringToV8(isolate, name) };
+  concatenated_args.reserve(1 + args.size());
+  concatenated_args.insert(concatenated_args.end(), args.begin(), args.end());
+  return internal::CallEmitWithArgs(isolate, obj, &concatenated_args);
+}
+
+// obj.emit(name, args...);
+// The caller is responsible of allocating a HandleScope.
+template<typename StringType, typename... Args>
+v8::Local<v8::Value> EmitEvent(v8::Isolate* isolate,
+                               v8::Local<v8::Object> obj,
+                               const StringType& name,
+                               const Args&... args) {
+  internal::ValueVector converted_args = {
+      StringToV8(isolate, name),
+      ConvertToV8(isolate, args)...,
+  };
+  return internal::CallEmitWithArgs(isolate, obj, &converted_args);
+}
+
+}  // namespace mate
+
+#endif  // ATOM_COMMON_API_EVENT_EMITTER_CALLER_H_