arkcompiler_ets_runtime/ecmascript/symbol_table-inl.h
zhangyukun 7ffcc4b20f Sync js_runtime to openharmony
Signed-off-by: zhangyukun <zhangyukun8@huawei.com>
2021-09-08 09:20:53 +08:00

73 lines
2.2 KiB
C++

/*
* Copyright (c) 2021 Huawei Device Co., Ltd.
* 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.
*/
#ifndef ECMASCRIPT_SYMBOL_TABLE_INL_H
#define ECMASCRIPT_SYMBOL_TABLE_INL_H
#include "symbol_table.h"
#include "js_symbol.h"
#include "tagged_hash_table-inl.h"
#include "libpandabase/utils/hash.h"
namespace panda::ecmascript {
uint32_t SymbolTable::Hash(const JSTaggedValue &obj)
{
if (obj.IsHeapObject()) {
if (obj.IsString()) {
auto *nameString = static_cast<EcmaString *>(obj.GetTaggedObject());
return nameString->GetHashcode();
}
return JSSymbol::ComputeHash();
}
UNREACHABLE();
}
bool SymbolTable::IsMatch(const JSTaggedValue &name, const JSTaggedValue &other)
{
if (name.IsHole() || name.IsUndefined()) {
return false;
}
auto *nameString = static_cast<EcmaString *>(name.GetTaggedObject());
auto *otherString = static_cast<EcmaString *>(other.GetTaggedObject());
return EcmaString::StringsAreEqual(nameString, otherString);
}
bool SymbolTable::ContainsKey(JSThread *thread, const JSTaggedValue &key)
{
int entry = FindEntry(key);
return entry != -1;
}
JSTaggedValue SymbolTable::GetSymbol(const JSTaggedValue &key)
{
int entry = FindEntry(key);
ASSERT(entry != -1);
return GetValue(entry);
}
JSTaggedValue SymbolTable::FindSymbol(JSThread *thread, const JSTaggedValue &value)
{
JSSymbol *symbol = JSSymbol::Cast(value.GetTaggedObject());
JSTaggedValue des = symbol->GetDescription();
if (!des.IsUndefined()) {
if (ContainsKey(thread, des)) {
return des;
}
}
return JSTaggedValue::Undefined();
}
} // namespace panda::ecmascript
#endif // ECMASCRIPT_SYMBOL_TABLE_INL_H