mirror of
https://github.com/openharmony/ark_runtime_core.git
synced 2026-07-19 13:17:49 -04:00
Ilya Trubachev
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PANDA_RUNTIME_INCLUDE_VALUE_H_
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#define PANDA_RUNTIME_INCLUDE_VALUE_H_
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#include <cstdarg>
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#include <cstdint>
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#include <type_traits>
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#include <variant>
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#include "libpandafile/file_items.h"
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namespace panda {
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class ObjectHeader;
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class Value {
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public:
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template <class T>
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explicit Value(T value)
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{
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// Disable checks due to clang-tidy bug https://bugs.llvm.org/show_bug.cgi?id=32203
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// NOLINTNEXTLINE(readability-braces-around-statements, hicpp-braces-around-statements, bugprone-branch-clone)
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if constexpr (std::is_integral_v<T>) {
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value_ = static_cast<int64_t>(value);
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// NOLINTNEXTLINE(readability-braces-around-statements, readability-misleading-indentation)
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} else if constexpr (std::is_same_v<T, double>) {
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value_ = bit_cast<int64_t>(value);
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// NOLINTNEXTLINE(readability-braces-around-statements, readability-misleading-indentation)
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} else if constexpr (std::is_same_v<T, float>) {
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value_ = bit_cast<int32_t>(value);
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} else { // NOLINTNEXTLINE(readability-misleading-indentation)
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value_ = value;
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}
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}
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Value(int64_t value, int64_t tag) : value_(DecodedTaggedValue(value, tag)) {}
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template <class T>
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T GetAs() const
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{
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static_assert(std::is_integral_v<T>, "T must be integral type");
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ASSERT(IsPrimitive());
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return static_cast<T>(std::get<0>(value_));
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}
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int64_t GetAsLong();
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DecodedTaggedValue GetDecodedTaggedValue() const
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{
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return IsDecodedTaggedValue() ? std::get<2>(value_) : DecodedTaggedValue(0, 0);
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}
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bool IsReference() const
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{
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return std::holds_alternative<ObjectHeader *>(value_);
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}
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bool IsPrimitive() const
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{
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return std::holds_alternative<int64_t>(value_);
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}
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bool IsDecodedTaggedValue() const
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{
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return std::holds_alternative<DecodedTaggedValue>(value_);
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}
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ObjectHeader **GetGCRoot()
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{
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ASSERT(IsReference());
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return &std::get<ObjectHeader *>(value_);
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}
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private:
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std::variant<int64_t, ObjectHeader *, DecodedTaggedValue> value_;
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};
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} // namespace panda
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#endif // PANDA_RUNTIME_INCLUDE_VALUE_H_
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