60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
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// 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 SHELL_COMMON_GIN_CONVERTERS_CALLBACK_CONVERTER_H_
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#define SHELL_COMMON_GIN_CONVERTERS_CALLBACK_CONVERTER_H_
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#include <utility>
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#include "base/callback_helpers.h"
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#include "shell/common/gin_helper/callback.h"
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namespace gin {
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template <typename Sig>
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struct Converter<base::RepeatingCallback<Sig>> {
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static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
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const base::RepeatingCallback<Sig>& val) {
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// We don't use CreateFunctionTemplate here because it creates a new
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// FunctionTemplate everytime, which is cached by V8 and causes leaks.
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auto translater =
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base::Bind(&gin_helper::NativeFunctionInvoker<Sig>::Go, val);
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// To avoid memory leak, we ensure that the callback can only be called
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// for once.
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return gin_helper::CreateFunctionFromTranslater(isolate, translater, true);
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}
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static bool FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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base::RepeatingCallback<Sig>* out) {
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if (!val->IsFunction())
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return false;
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*out = base::BindRepeating(&gin_helper::V8FunctionInvoker<Sig>::Go, isolate,
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gin_helper::SafeV8Function(isolate, val));
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return true;
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}
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};
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template <typename Sig>
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struct Converter<base::OnceCallback<Sig>> {
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static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
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base::OnceCallback<Sig> in) {
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return gin::ConvertToV8(isolate,
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base::AdaptCallbackForRepeating(std::move(in)));
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}
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static bool FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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base::OnceCallback<Sig>* out) {
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if (!val->IsFunction())
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return false;
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*out = base::BindOnce(&gin_helper::V8FunctionInvoker<Sig>::Go, isolate,
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gin_helper::SafeV8Function(isolate, val));
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return true;
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}
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};
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} // namespace gin
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#endif // SHELL_COMMON_GIN_CONVERTERS_CALLBACK_CONVERTER_H_
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