mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
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125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* Copyright (c) 2021 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 ECMASCRIPT_JSSYMBOL_H
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#define ECMASCRIPT_JSSYMBOL_H
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#include "ecmascript/ecma_string.h"
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#include "ecmascript/js_object.h"
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namespace panda {
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namespace ecmascript {
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class JSSymbol : public TaggedObject {
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public:
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static constexpr uint32_t IS_PRIVATE = 1U << 0U;
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static constexpr uint32_t IS_WELL_KNOWN_SYMBOL = 1U << 1U;
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static constexpr uint32_t IS_IN_PUBLIC_SYMBOL_TABLE = 1U << 2U;
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static constexpr uint32_t IS_INTERESTING_SYMBOL = 1U << 3U;
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static constexpr uint32_t IS_PRIVATE_NAME = 1U << 4U;
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static constexpr uint32_t IS_PRIVATE_BRAND = 1U << 5U;
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static constexpr int SYMBOL_HAS_INSTANCE_TYPE = 0;
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static constexpr int SYMBOL_TO_PRIMITIVE_TYPE = 1;
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static constexpr int SYMBOL_DEFAULT_TYPE = 2;
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static constexpr const uint32_t LINEAR_X = 1103515245U;
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static constexpr const uint32_t LINEAR_Y = 12345U;
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static constexpr const uint32_t LINEAR_SEED = 987654321U;
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public:
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CAST_CHECK(JSSymbol, IsSymbol);
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static inline uint32_t ComputeHash()
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{
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uint32_t hashSeed = LINEAR_SEED + std::time(nullptr);
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uint32_t hash = hashSeed * LINEAR_X + LINEAR_Y;
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return hash;
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}
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bool IsPrivate() const
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{
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return (GetFlags() & IS_PRIVATE) != 0U;
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}
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void SetPrivate(const JSThread *thread)
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{
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SetFlags(GetFlags() | IS_PRIVATE);
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}
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bool IsWellKnownSymbol() const
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{
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return (GetFlags() & IS_WELL_KNOWN_SYMBOL) != 0U;
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}
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void SetWellKnownSymbol(const JSThread *thread)
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{
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SetFlags(GetFlags() | IS_WELL_KNOWN_SYMBOL);
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}
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bool IsInPublicSymbolTable() const
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{
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return (GetFlags() & IS_IN_PUBLIC_SYMBOL_TABLE) != 0U;
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}
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void SetInPublicSymbolTable(const JSThread *thread)
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{
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SetFlags(GetFlags() | IS_IN_PUBLIC_SYMBOL_TABLE);
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}
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bool IsInterestingSymbol() const
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{
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return (GetFlags() & IS_INTERESTING_SYMBOL) != 0U;
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}
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void SetInterestingSymbol(const JSThread *thread)
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{
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SetFlags(GetFlags() | IS_INTERESTING_SYMBOL);
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}
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bool IsPrivateNameSymbol() const
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{
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return (GetFlags() & IS_PRIVATE_NAME) != 0U;
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}
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void SetPrivateNameSymbol(const JSThread *thread)
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{
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SetFlags(GetFlags() | IS_PRIVATE_NAME);
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}
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static bool Equal(const JSSymbol &src, const JSSymbol &dst)
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{
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if (src.GetFlags() != dst.GetFlags()) {
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return false;
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}
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EcmaString *srcString = EcmaString::Cast(src.GetDescription().GetTaggedObject());
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EcmaString *dstString = EcmaString::Cast(dst.GetDescription().GetTaggedObject());
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return EcmaString::StringsAreEqual(srcString, dstString);
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}
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public:
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static constexpr size_t DESCRIPTION_OFFSET = TaggedObjectSize();
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ACCESSORS(Description, DESCRIPTION_OFFSET, HASHFIELD_OFFSET)
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ACCESSORS_PRIMITIVE_FIELD(HashField, uint32_t, HASHFIELD_OFFSET, FLAGS_OFFSET)
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ACCESSORS_PRIMITIVE_FIELD(Flags, uint32_t, FLAGS_OFFSET, LAST_OFFSET)
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DEFINE_ALIGN_SIZE(LAST_OFFSET);
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DECL_DUMP()
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DECL_VISIT_OBJECT(DESCRIPTION_OFFSET, HASHFIELD_OFFSET)
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};
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} // namespace ecmascript
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} // namespace panda
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#endif // ECMASCRIPT_NAME_H
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