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/*
* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
* Copyright (C) 2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/text/SymbolRegistry.h>
#include <wtf/text/SymbolImpl.h>
namespace WTF {
SymbolRegistry::SymbolRegistry(Type type)
: m_symbolType(type)
{
}
SymbolRegistry::~SymbolRegistry()
{
for (auto& key : m_table) {
ASSERT(key->isSymbol());
static_cast<SymbolImpl*>(key.get())->asRegisteredSymbolImpl()->clearSymbolRegistry();
}
}
Ref<RegisteredSymbolImpl> SymbolRegistry::symbolForKey(const String& rep)
{
auto addResult = m_table.add(rep.impl());
if (!addResult.isNewEntry) {
ASSERT(addResult.iterator->get()->isSymbol());
return *static_cast<SymbolImpl*>(addResult.iterator->get())->asRegisteredSymbolImpl();
}
RefPtr<RegisteredSymbolImpl> symbol;
if (m_symbolType == Type::PrivateSymbol)
symbol = RegisteredSymbolImpl::createPrivate(*rep.impl(), *this);
else
symbol = RegisteredSymbolImpl::create(*rep.impl(), *this);
*addResult.iterator = symbol;
return symbol.releaseNonNull();
}
// When removing a registered symbol from the table, we know it's already the one in the table, so no need for a string equality check.
struct SymbolRegistryTableRemovalHashTranslator {
static unsigned hash(const RegisteredSymbolImpl* key) { return key->hash(); }
static bool equal(const RefPtr<StringImpl>& a, const RegisteredSymbolImpl* b) { return a.get() == b; }
};
void SymbolRegistry::remove(RegisteredSymbolImpl& uid)
{
ASSERT(uid.symbolRegistry() == this);
auto iterator = m_table.find<SymbolRegistryTableRemovalHashTranslator>(&uid);
ASSERT_WITH_MESSAGE(iterator != m_table.end(), "The string being removed is registered in the string table of another thread!");
m_table.remove(iterator);
}
}
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