LiteLoaderBDS-1.16.40/ScriptEngine/third-party/ScriptX/backend/JavaScriptCore/JscUtils.cc
2022-09-21 19:47:03 +08:00

92 lines
3.0 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 <JavaScriptCore/JavaScript.h>
#include "../../src/Reference.h"
#include "../../src/Utils.h"
#include "JscHelper.h"
namespace script {
namespace jsc_backend {
void initString(const jsc_backend::StringHolderData &data) {
if (!data.inited) {
data.inited = true;
if (data.jscStringRefHolder) {
if (data.length == std::string::npos) {
data.length = JSStringGetMaximumUTF8CStringSize(data.jscStringRefHolder.get());
}
data.stringContent.resize(data.length);
auto length = JSStringGetUTF8CString(data.jscStringRefHolder.get(), data.stringContent.data(),
data.length);
data.length = length;
data.stringContent.resize(length - 1);
// NOLINTNEXTLINE(cppcoreguidelines-avoid-magic-numbers)
if (data.stringContent.capacity() - length > 1024) {
// string has too much wasted space, make a smaller copy
data.stringContent = data.stringContent;
}
} else {
data.length = 0;
}
}
}
} // namespace jsc_backend
StringHolder::StringHolder(const script::Local<script::String> &string)
: internalHolder_(string.val_.getSharedStringRef(jsc_backend::currentEngineContextChecked())) {}
StringHolder::~StringHolder() = default;
size_t StringHolder::length() const {
jsc_backend::initString(internalHolder_);
return internalHolder_.length - 1;
}
const char *StringHolder::c_str() const {
jsc_backend::initString(internalHolder_);
return internalHolder_.stringContent.c_str();
}
std::string_view StringHolder::stringView() const {
jsc_backend::initString(internalHolder_);
return internalHolder_.stringContent;
}
std::string StringHolder::string() const {
jsc_backend::initString(internalHolder_);
internalHolder_.inited = false;
return std::move(internalHolder_.stringContent);
}
#if defined(__cpp_char8_t)
// NOLINTNEXTLINE(clang-analyzer-cplusplus.InnerPointer)
std::u8string StringHolder::u8string() const { return std::u8string(c_u8str(), length()); }
std::u8string_view StringHolder::u8stringView() const {
// NOLINTNEXTLINE(clang-analyzer-cplusplus.InnerPointer)
return std::u8string_view(c_u8str(), length());
}
const char8_t *StringHolder::c_u8str() const { return reinterpret_cast<const char8_t *>(c_str()); }
#endif
} // namespace script