a3e28788ce* refactor: ginify Tray * lint * improve argument parsing logic * remove redundant imports from tray.js * new Tray produces an instanceof Tray * make Constructible generic * lint * clean up on exit
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
// Copyright 2020 Slack Technologies, Inc.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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#ifndef SHELL_COMMON_GIN_HELPER_FUNCTION_TEMPLATE_EXTENSIONS_H_
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#define SHELL_COMMON_GIN_HELPER_FUNCTION_TEMPLATE_EXTENSIONS_H_
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#include <utility>
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#include "gin/function_template.h"
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#include "shell/common/gin_helper/error_thrower.h"
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// This extends the functionality in //gin/function_template.h for "special"
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// arguments to gin-bound methods.
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// It's the counterpart to function_template.h, which includes these methods
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// in the gin_helper namespace.
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namespace gin {
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// Support base::Optional as an argument.
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template <typename T>
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bool GetNextArgument(Arguments* args,
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const InvokerOptions& invoker_options,
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bool is_first,
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base::Optional<T>* result) {
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T converted;
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// Use gin::Arguments::GetNext which always advances |next| counter.
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if (args->GetNext(&converted))
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result->emplace(std::move(converted));
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return true;
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}
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inline bool GetNextArgument(Arguments* args,
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const InvokerOptions& invoker_options,
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bool is_first,
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gin_helper::ErrorThrower* result) {
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*result = gin_helper::ErrorThrower(args->isolate());
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return true;
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}
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// Like gin::CreateFunctionTemplate, but doesn't remove the template's
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// prototype.
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template <typename Sig>
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v8::Local<v8::FunctionTemplate> CreateConstructorFunctionTemplate(
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v8::Isolate* isolate,
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base::RepeatingCallback<Sig> callback,
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InvokerOptions invoker_options = {}) {
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typedef internal::CallbackHolder<Sig> HolderT;
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HolderT* holder =
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new HolderT(isolate, std::move(callback), std::move(invoker_options));
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v8::Local<v8::FunctionTemplate> tmpl = v8::FunctionTemplate::New(
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isolate, &internal::Dispatcher<Sig>::DispatchToCallback,
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ConvertToV8<v8::Local<v8::External>>(isolate,
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holder->GetHandle(isolate)));
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return tmpl;
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}
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} // namespace gin
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#endif // SHELL_COMMON_GIN_HELPER_FUNCTION_TEMPLATE_EXTENSIONS_H_
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