LiteLoaderBDS-1.16.40/Tools/ScriptX/backend/QuickJs/QjsValue.cc
2023-03-03 10:18:21 -08:00

190 lines
6.8 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.
*/
#include "../../src/Exception.h"
#include "../../src/Reference.h"
#include "../../src/Scope.h"
#include "../../src/Utils.h"
#include "../../src/Value.h"
#include "../../src/utils/Helper.hpp"
#include "QjsEngine.h"
#include "QjsHelper.hpp"
namespace script {
Local<Object> Object::newObject() {
auto obj = JS_NewObject(qjs_backend::currentContext());
qjs_backend::checkException(obj);
return qjs_interop::makeLocal<Object>(obj);
}
Local<Object> Object::newObjectImpl(const Local<Value>& type, size_t size,
const Local<Value>* args) {
auto& engine = qjs_backend::currentEngine();
auto context = engine.context_;
JSValue ret = JS_UNDEFINED;
internal::withNArray<JSValue>(size, [context, &type, &ret, size, args](JSValue* array) {
for (size_t i = 0; i < size; ++i) {
array[i] = qjs_interop::peekLocal(args[i]);
}
ret = JS_CallConstructor(context, qjs_interop::peekLocal(type), static_cast<int>(size), array);
qjs_backend::checkException(ret);
});
engine.scheduleTick();
return qjs_interop::makeLocal<Object>(ret);
}
Local<String> String::newString(const char* utf8) { return newString(std::string_view(utf8)); }
Local<String> String::newString(std::string_view utf8) {
auto str = JS_NewStringLen(qjs_backend::currentContext(), utf8.data(), utf8.length());
qjs_backend::checkException(str);
return qjs_interop::makeLocal<String>(str);
}
Local<String> String::newString(const std::string& utf8) {
return newString(std::string_view(utf8));
}
#if defined(__cpp_char8_t)
Local<String> String::newString(const char8_t* utf8) {
return newString(reinterpret_cast<const char*>(utf8));
}
Local<String> String::newString(std::u8string_view utf8) {
return newString(std::string_view(reinterpret_cast<const char*>(utf8.data()), utf8.length()));
}
Local<String> String::newString(const std::u8string& utf8) { return newString(utf8.c_str()); }
#endif
Local<Number> Number::newNumber(float value) { return newNumber(static_cast<double>(value)); }
Local<Number> Number::newNumber(double value) {
return qjs_interop::makeLocal<Number>(JS_NewFloat64(qjs_backend::currentContext(), value));
}
Local<Number> Number::newNumber(int32_t value) {
return qjs_interop::makeLocal<Number>(JS_NewInt32(qjs_backend::currentContext(), value));
}
Local<Number> Number::newNumber(int64_t value) {
return qjs_interop::makeLocal<Number>(JS_NewInt64(qjs_backend::currentContext(), value));
}
Local<Boolean> Boolean::newBoolean(bool value) {
return qjs_interop::makeLocal<Boolean>(JS_NewBool(qjs_backend::currentContext(), value));
}
Local<Function> Function::newFunction(script::FunctionCallback callback) {
auto ptr = std::make_unique<script::FunctionCallback>(std::move(callback));
auto& engine = qjs_backend::currentEngine();
JSContext* context = engine.context_;
auto funData = JS_NewObjectClass(context, qjs_backend::QjsEngine::kFunctionDataClassId);
qjs_backend::checkException(funData);
JS_SetOpaque(funData, ptr.release());
auto engineData = JS_NewObjectClass(context, qjs_backend::QjsEngine::kPointerClassId);
qjs_backend::checkException(engineData);
JS_SetOpaque(engineData, &engine);
JSValue arr[2] = {funData, engineData};
auto fun = JS_NewCFunctionData(
context,
[](JSContext* ctx, JSValueConst this_val, int argc, JSValueConst* argv, int /*magic*/,
JSValue* func_data) {
auto callback = static_cast<FunctionCallback*>(
JS_GetOpaque(func_data[0], qjs_backend::QjsEngine::kFunctionDataClassId));
auto engine = static_cast<qjs_backend::QjsEngine*>(
JS_GetOpaque(func_data[1], qjs_backend::QjsEngine::kPointerClassId));
Tracer trace(engine, "CppFunction");
try {
auto args = qjs_interop::makeArguments(engine, this_val, argc, argv);
auto ret = (*callback)(args);
return qjs_interop::getLocal(ret);
} catch (const Exception& e) {
return qjs_backend::throwException(e, engine);
}
},
0, 0, 2, arr);
qjs_backend::checkException(fun);
JS_FreeValue(context, funData);
JS_FreeValue(context, engineData);
return Local<Function>{fun};
}
Local<Array> Array::newArray(size_t size) {
auto& engine = qjs_backend::currentEngine();
auto array = JS_NewArray(engine.context_);
qjs_backend::checkException(array);
if (size != 0) {
auto number = JS_NewUint32(engine.context_, static_cast<uint32_t>(size));
qjs_backend::checkException(JS_SetProperty(engine.context_, array, engine.lengthAtom_, number));
}
return qjs_interop::makeLocal<Array>(array);
}
Local<Array> Array::newArrayImpl(size_t size, const Local<Value>* args) {
auto array = JS_NewArray(qjs_backend::currentContext());
qjs_backend::checkException(array);
auto context = qjs_backend::currentContext();
for (size_t i = 0; i < size; ++i) {
qjs_backend::checkException(JS_SetPropertyInt64(context, array, static_cast<int64_t>(i),
qjs_interop::getLocal(args[i])));
}
return qjs_interop::makeLocal<Array>(array);
}
Local<ByteBuffer> ByteBuffer::newByteBuffer(size_t size) { return newByteBuffer(nullptr, size); }
Local<script::ByteBuffer> ByteBuffer::newByteBuffer(void* nativeBuffer, size_t size) {
auto ab = JS_NewArrayBufferCopy(qjs_backend::currentContext(),
static_cast<uint8_t*>(nativeBuffer), size);
qjs_backend::checkException(ab);
return qjs_interop::makeLocal<ByteBuffer>(ab);
}
Local<ByteBuffer> ByteBuffer::newByteBuffer(std::shared_ptr<void> nativeBuffer, size_t size) {
auto ptr = nativeBuffer.get();
auto sharedPtrPtr = std::make_unique<std::shared_ptr<void>>(std::move(nativeBuffer));
auto opaque = sharedPtrPtr.get();
auto ab = JS_NewArrayBuffer(
qjs_backend::currentContext(), static_cast<uint8_t*>(ptr), size,
[](JSRuntime*, void* opaque, void* /*ptr*/) {
delete static_cast<std::shared_ptr<void>*>(opaque);
},
opaque, false);
qjs_backend::checkException(ab);
sharedPtrPtr.release(); // NOLINT(bugprone-unused-return-value)
return qjs_interop::makeLocal<ByteBuffer>(ab);
}
} // namespace script