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chore: remove native_mate (Part 2) (#20106)

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* add notice to files being removed

* add gin version of function_template.h

* rename callback.h to avoid confliction

* add gin version of callback_converter

* add gin converter for OnceCallback

* remove callback_converter_gin_adapter.h

* remove gin_util.h and gin_utils.h

* fix lint warning

* add helper for setting methods
This commit is contained in:
Cheng Zhao 2019-09-05 00:45:25 +09:00 • committed by Robo
parent 504cdb13f0
commit 81ae154714
42 changed files with 866 additions and 202 deletions
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163
shell/common/gin_helper/callback.h Normal file
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// Copyright (c) 2019 GitHub, Inc. All rights reserved.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#ifndef SHELL_COMMON_GIN_HELPER_CALLBACK_H_
#define SHELL_COMMON_GIN_HELPER_CALLBACK_H_
#include <utility>
#include <vector>
#include "base/bind.h"
#include "shell/common/api/locker.h"
#include "shell/common/gin_helper/function_template.h"
// Implements safe convertions between JS functions and base::Callback.
namespace gin {
// Make it possible to convert move-only types.
template <typename T>
v8::Local<v8::Value> ConvertToV8(v8::Isolate* isolate, T&& input) {
return Converter<typename std::remove_reference<T>::type>::ToV8(
isolate, std::move(input));
}
} // namespace gin
namespace gin_helper {
template <typename T>
class RefCountedGlobal;
// Manages the V8 function with RAII.
class SafeV8Function {
public:
SafeV8Function(v8::Isolate* isolate, v8::Local<v8::Value> value);
SafeV8Function(const SafeV8Function& other);
~SafeV8Function();
bool IsAlive() const;
v8::Local<v8::Function> NewHandle(v8::Isolate* isolate) const;
private:
scoped_refptr<RefCountedGlobal<v8::Function>> v8_function_;
};
// Helper to invoke a V8 function with C++ parameters.
template <typename Sig>
struct V8FunctionInvoker {};
template <typename... ArgTypes>
struct V8FunctionInvoker<v8::Local<v8::Value>(ArgTypes...)> {
static v8::Local<v8::Value> Go(v8::Isolate* isolate,
const SafeV8Function& function,
ArgTypes... raw) {
mate::Locker locker(isolate);
v8::EscapableHandleScope handle_scope(isolate);
if (!function.IsAlive())
return v8::Null(isolate);
v8::MicrotasksScope script_scope(isolate,
v8::MicrotasksScope::kRunMicrotasks);
v8::Local<v8::Function> holder = function.NewHandle(isolate);
v8::Local<v8::Context> context = holder->CreationContext();
v8::Context::Scope context_scope(context);
std::vector<v8::Local<v8::Value>> args{
gin::ConvertToV8(isolate, std::forward<ArgTypes>(raw))...};
v8::MaybeLocal<v8::Value> ret = holder->Call(
context, holder, args.size(), args.empty() ? nullptr : &args.front());
if (ret.IsEmpty())
return v8::Undefined(isolate);
else
return handle_scope.Escape(ret.ToLocalChecked());
}
};
template <typename... ArgTypes>
struct V8FunctionInvoker<void(ArgTypes...)> {
static void Go(v8::Isolate* isolate,
const SafeV8Function& function,
ArgTypes... raw) {
mate::Locker locker(isolate);
v8::HandleScope handle_scope(isolate);
if (!function.IsAlive())
return;
v8::MicrotasksScope script_scope(isolate,
v8::MicrotasksScope::kRunMicrotasks);
v8::Local<v8::Function> holder = function.NewHandle(isolate);
v8::Local<v8::Context> context = holder->CreationContext();
v8::Context::Scope context_scope(context);
std::vector<v8::Local<v8::Value>> args{
gin::ConvertToV8(isolate, std::forward<ArgTypes>(raw))...};
holder
->Call(context, holder, args.size(),
args.empty() ? nullptr : &args.front())
.IsEmpty();
}
};
template <typename ReturnType, typename... ArgTypes>
struct V8FunctionInvoker<ReturnType(ArgTypes...)> {
static ReturnType Go(v8::Isolate* isolate,
const SafeV8Function& function,
ArgTypes... raw) {
mate::Locker locker(isolate);
v8::HandleScope handle_scope(isolate);
ReturnType ret = ReturnType();
if (!function.IsAlive())
return ret;
v8::MicrotasksScope script_scope(isolate,
v8::MicrotasksScope::kRunMicrotasks);
v8::Local<v8::Function> holder = function.NewHandle(isolate);
v8::Local<v8::Context> context = holder->CreationContext();
v8::Context::Scope context_scope(context);
std::vector<v8::Local<v8::Value>> args{
gin::ConvertToV8(isolate, std::forward<ArgTypes>(raw))...};
v8::Local<v8::Value> result;
auto maybe_result = holder->Call(context, holder, args.size(),
args.empty() ? nullptr : &args.front());
if (maybe_result.ToLocal(&result))
gin::Converter<ReturnType>::FromV8(isolate, result, &ret);
return ret;
}
};
// Helper to pass a C++ funtion to JavaScript.
using Translater = base::Callback<void(gin::Arguments* args)>;
v8::Local<v8::Value> CreateFunctionFromTranslater(v8::Isolate* isolate,
const Translater& translater,
bool one_time);
v8::Local<v8::Value> BindFunctionWith(v8::Isolate* isolate,
v8::Local<v8::Context> context,
v8::Local<v8::Function> func,
v8::Local<v8::Value> arg1,
v8::Local<v8::Value> arg2);
// Calls callback with Arguments.
template <typename Sig>
struct NativeFunctionInvoker {};
template <typename ReturnType, typename... ArgTypes>
struct NativeFunctionInvoker<ReturnType(ArgTypes...)> {
static void Go(base::Callback<ReturnType(ArgTypes...)> val,
gin::Arguments* args) {
using Indices = typename IndicesGenerator<sizeof...(ArgTypes)>::type;
Invoker<Indices, ArgTypes...> invoker(args, 0);
if (invoker.IsOK())
invoker.DispatchToCallback(val);
}
};
// Convert a callback to V8 without the call number limitation, this can easily
// cause memory leaks so use it with caution.
template <typename Sig>
v8::Local<v8::Value> CallbackToV8Leaked(
v8::Isolate* isolate,
const base::RepeatingCallback<Sig>& val) {
Translater translater = base::Bind(&NativeFunctionInvoker<Sig>::Go, val);
return CreateFunctionFromTranslater(isolate, translater, false);
}
} // namespace gin_helper
#endif // SHELL_COMMON_GIN_HELPER_CALLBACK_H_