LiteLoaderBDS-1.16.40/Tools/ScriptX/backend/WebAssembly/WasmNative.hpp
2023-03-03 10:18:21 -08:00

54 lines
1.7 KiB
C++

/*
* Tencent is pleased to support the open source community by making ScriptX available.
* Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "../../src/Native.h"
#include "WasmEngine.h"
#include "WasmHelper.h"
namespace script {
template <typename T>
ScriptClass::ScriptClass(const ScriptClass::ConstructFromCpp<T>) : internalState_() {
auto engine = &wasm_backend::currentEngine();
// Because we only has Weak<Object> hold to obj
// to prevent obj from GCed, we relay on obj be the local ref.
Local<Value> out;
static_assert(sizeof(int32_t) == sizeof(void*), "32-bit wasm assert");
{
StackFrameScope scope;
auto mark =
wasm_backend::WasmEngine::make<Local<Value>>(wasm_backend::NativeHelper::pushCppNewMark());
Local<Number> ins = Number::newNumber(reinterpret_cast<int32_t>(this));
auto obj = engine->newNativeClass<T>(mark, ins);
out = scope.returnValue(obj);
}
internalState_.scriptEngine_ = engine;
internalState_.weakRef_ = out.asObject();
}
template <typename T>
T* Arguments::engineAs() const {
return script::internal::scriptDynamicCast<T*>(callbackInfo_.engine_);
}
} // namespace script