mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
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48b044e6a5
Issue:https://gitee.com/openharmony/arkcompiler_ets_runtime/issues/I9HSO7?from=project-issue Signed-off-by: yaochaonan <yaochaonan@huawei.com> Change-Id: Ia4925ebe96d5ccc5ac8ab431db86b56143296ba5
70 lines
2.3 KiB
C++
70 lines
2.3 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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#include "ecmascript/regexp/regexp_parser_cache.h"
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namespace panda::ecmascript {
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RegExpParserCache::RegExpParserCache()
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{
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Clear();
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}
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RegExpParserCache::~RegExpParserCache()
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{
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Clear();
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}
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void RegExpParserCache::Clear()
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{
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for (ParserKey &info : info_) {
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info.pattern_ = nullptr;
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info.flags_ = UINT32_MAX; // flags cannot be UINT32_MAX, so it means invalid.
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info.codeBuffer_ = JSTaggedValue::Hole();
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info.bufferSize_ = 0;
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}
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}
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size_t RegExpParserCache::GetHash(EcmaString *pattern, const uint32_t flags)
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{
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auto hashcode = EcmaStringAccessor(pattern).GetHashcode();
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return (hashcode ^ flags) % CACHE_SIZE;
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}
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std::pair<JSTaggedValue, size_t> RegExpParserCache::GetCache(EcmaString *pattern, const uint32_t flags,
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CVector<CString> &groupName)
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{
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size_t hash = GetHash(pattern, flags);
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ParserKey &info = info_[hash];
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if (info.flags_ != flags || info.pattern_ == nullptr ||
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!EcmaStringAccessor::StringsAreEqual(info.pattern_, pattern)) {
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return std::pair<JSTaggedValue, size_t>(JSTaggedValue::Hole(), 0);
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}
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groupName = info.newGroupNames_;
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return std::pair<JSTaggedValue, size_t>(info.codeBuffer_, info.bufferSize_);
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}
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void RegExpParserCache::SetCache(EcmaString *pattern, const uint32_t flags,
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const JSTaggedValue codeBuffer, const size_t bufferSize,
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CVector<CString> groupName)
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{
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size_t hash = GetHash(pattern, flags);
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ParserKey &info = info_[hash];
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info.pattern_ = pattern;
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info.flags_ = flags;
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info.codeBuffer_ = codeBuffer;
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info.bufferSize_ = bufferSize;
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info.newGroupNames_ = groupName;
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}
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} // namespace panda::ecmascript
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