209 lines
6.7 KiB
C++
209 lines
6.7 KiB
C++
// Copyright (c) 2014 GitHub, Inc. All rights reserved.
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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 file.
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#ifndef ATOM_COMMON_NATIVE_MATE_CONVERTERS_FUNCTION_CONVERTER_H_
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#define ATOM_COMMON_NATIVE_MATE_CONVERTERS_FUNCTION_CONVERTER_H_
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#include "atom/common/browser_v8_locker.h"
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#include "base/bind.h"
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#include "base/callback.h"
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#include "native_mate/constructor.h"
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#include "native_mate/scoped_persistent.h"
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namespace mate {
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namespace internal {
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typedef scoped_refptr<RefCountedPersistent<v8::Function> > SafeV8Function;
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// Helper to convert type to V8 with storage type (const T& to T).
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template<typename T>
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v8::Handle<v8::Value> ConvertToV8(v8::Isolate* isolate, T a) {
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return Converter<typename base::internal::CallbackParamTraits<T>::StorageType>
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::ToV8(isolate, a);
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}
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// This set of templates invokes a V8::Function by converting the C++ types.
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template<typename Sig>
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struct V8FunctionInvoker;
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template<typename R>
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struct V8FunctionInvoker<R()> {
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static R Go(v8::Isolate* isolate, SafeV8Function function) {
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R ret;
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> val(holder->Call(holder, 0, NULL));
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Converter<R>::FromV8(isolate, val, &ret);
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return ret;
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}
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};
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template<>
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struct V8FunctionInvoker<void()> {
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static void Go(v8::Isolate* isolate, SafeV8Function function) {
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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holder->Call(holder, 0, NULL);
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}
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};
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template<typename R, typename P1>
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struct V8FunctionInvoker<R(P1)> {
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static R Go(v8::Isolate* isolate, SafeV8Function function, P1 a1) {
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R ret;
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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};
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v8::Handle<v8::Value> val(holder->Call(holder, arraysize(args), args));
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Converter<R>::FromV8(isolate, val, &ret);
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return ret;
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}
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};
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template<typename P1>
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struct V8FunctionInvoker<void(P1)> {
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static void Go(v8::Isolate* isolate, SafeV8Function function, P1 a1) {
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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};
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holder->Call(holder, arraysize(args), args);
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}
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};
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template<typename R, typename P1, typename P2>
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struct V8FunctionInvoker<R(P1, P2)> {
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static R Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2) {
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R ret;
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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};
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v8::Handle<v8::Value> val(holder->Call(holder, arraysize(args), args));
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Converter<R>::FromV8(isolate, val, &ret);
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return ret;
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}
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};
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template<typename P1, typename P2>
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struct V8FunctionInvoker<void(P1, P2)> {
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static void Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2) {
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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};
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holder->Call(holder, arraysize(args), args);
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}
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};
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template<typename R, typename P1, typename P2, typename P3>
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struct V8FunctionInvoker<R(P1, P2, P3)> {
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static R Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2,
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P3 a3) {
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R ret;
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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ConvertToV8(isolate, a3),
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};
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v8::Handle<v8::Value> val(holder->Call(holder, arraysize(args), args));
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Converter<R>::FromV8(isolate, val, &ret);
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return ret;
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}
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};
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template<typename P1, typename P2, typename P3>
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struct V8FunctionInvoker<void(P1, P2, P3)> {
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static void Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2,
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P3 a3) {
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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ConvertToV8(isolate, a3),
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};
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holder->Call(holder, arraysize(args), args);
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}
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};
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template<typename R, typename P1, typename P2, typename P3, typename P4>
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struct V8FunctionInvoker<R(P1, P2, P3, P4)> {
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static R Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2,
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P3 a3, P4 a4) {
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R ret;
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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ConvertToV8(isolate, a3),
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ConvertToV8(isolate, a4),
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};
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v8::Handle<v8::Value> val(holder->Call(holder, arraysize(args), args));
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Converter<R>::FromV8(isolate, val, &ret);
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return ret;
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}
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};
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template<typename P1, typename P2, typename P3, typename P4>
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struct V8FunctionInvoker<void(P1, P2, P3, P4)> {
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static void Go(v8::Isolate* isolate, SafeV8Function function, P1 a1, P2 a2,
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P3 a3, P4 a4) {
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atom::BrowserV8Locker locker(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Handle<v8::Function> holder = function->NewHandle();
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v8::Handle<v8::Value> args[] = {
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ConvertToV8(isolate, a1),
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ConvertToV8(isolate, a2),
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ConvertToV8(isolate, a3),
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ConvertToV8(isolate, a4),
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};
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holder->Call(holder, arraysize(args), args);
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}
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};
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} // namespace internal
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template<typename Sig>
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struct Converter<base::Callback<Sig> > {
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static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
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const base::Callback<Sig>& val) {
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return CreateFunctionTemplate(isolate, val)->GetFunction();
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}
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static bool FromV8(v8::Isolate* isolate,
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v8::Handle<v8::Value> val,
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base::Callback<Sig>* out) {
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if (!val->IsFunction())
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return false;
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internal::SafeV8Function function(
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new RefCountedPersistent<v8::Function>(val));
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*out = base::Bind(&internal::V8FunctionInvoker<Sig>::Go, isolate, function);
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return true;
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}
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};
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} // namespace mate
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#endif // ATOM_COMMON_NATIVE_MATE_CONVERTERS_FUNCTION_CONVERTER_H_
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