81 lines
3 KiB
C++
81 lines
3 KiB
C++
// Copyright (c) 2019 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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#define ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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#include <array>
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#include <utility>
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#include "base/containers/span.h"
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#include "gin/converter.h"
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#include "gin/wrappable.h"
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#include "shell/common/gin_converters/std_converter.h" // for ConvertToV8(iso, &&)
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namespace gin_helper {
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namespace internal {
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v8::Local<v8::Value> CallMethodWithArgs(v8::Isolate* isolate,
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v8::Local<v8::Object> obj,
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const char* method,
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base::span<v8::Local<v8::Value>> args);
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} // namespace internal
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// obj.emit(name, args...);
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// The caller is responsible of allocating a HandleScope.
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template <typename StringType, typename... Args>
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v8::Local<v8::Value> EmitEvent(v8::Isolate* isolate,
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v8::Local<v8::Object> obj,
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const StringType& name,
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Args&&... args) {
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v8::EscapableHandleScope scope{isolate};
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std::array<v8::Local<v8::Value>, 1U + sizeof...(args)> converted_args = {
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gin::StringToV8(isolate, name),
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gin::ConvertToV8(isolate, std::forward<Args>(args))...,
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};
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return scope.Escape(
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internal::CallMethodWithArgs(isolate, obj, "emit", converted_args));
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}
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// obj.custom_emit(args...)
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template <typename... Args>
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v8::Local<v8::Value> CustomEmit(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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const char* custom_emit,
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Args&&... args) {
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v8::EscapableHandleScope scope{isolate};
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std::array<v8::Local<v8::Value>, sizeof...(args)> converted_args = {
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gin::ConvertToV8(isolate, std::forward<Args>(args))...,
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};
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return scope.Escape(internal::CallMethodWithArgs(isolate, object, custom_emit,
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converted_args));
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}
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template <typename T, typename... Args>
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v8::Local<v8::Value> CallMethod(v8::Isolate* isolate,
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gin::Wrappable<T>* object,
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const char* method_name,
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Args&&... args) {
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v8::EscapableHandleScope scope(isolate);
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v8::Local<v8::Object> v8_object;
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if (object->GetWrapper(isolate).ToLocal(&v8_object))
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return scope.Escape(CustomEmit(isolate, v8_object, method_name,
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std::forward<Args>(args)...));
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else
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return {};
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}
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template <typename T, typename... Args>
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v8::Local<v8::Value> CallMethod(gin::Wrappable<T>* object,
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const char* method_name,
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Args&&... args) {
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v8::Isolate* isolate = v8::Isolate::GetCurrent();
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return CallMethod(isolate, object, method_name, std::forward<Args>(args)...);
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}
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} // namespace gin_helper
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#endif // ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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