blob: b134247e72e56f7da016cffd65a67477027ae3fb [file] [log] [blame]
/*
* Copyright (C) 2006-2019 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include <wtf/text/UniquedStringImpl.h>
namespace WTF {
class AtomStringTable;
class AtomStringImpl final : public UniquedStringImpl {
public:
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> lookUp(const LChar*, unsigned length);
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> lookUp(const UChar*, unsigned length);
static RefPtr<AtomStringImpl> lookUp(StringImpl* string)
{
if (!string || string->isAtom())
return static_cast<AtomStringImpl*>(string);
return lookUpSlowCase(*string);
}
static void remove(AtomStringImpl*);
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(const LChar*);
ALWAYS_INLINE static RefPtr<AtomStringImpl> add(const char* s) { return add(reinterpret_cast<const LChar*>(s)); };
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(const LChar*, unsigned length);
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(const UChar*, unsigned length);
ALWAYS_INLINE static RefPtr<AtomStringImpl> add(const char* s, unsigned length) { return add(reinterpret_cast<const LChar*>(s), length); };
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(const UChar*);
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(StringImpl*, unsigned offset, unsigned length);
ALWAYS_INLINE static RefPtr<AtomStringImpl> add(StringImpl* string)
{
if (!string)
return nullptr;
return add(*string);
}
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(const StaticStringImpl*);
WTF_EXPORT_PRIVATE static Ref<AtomStringImpl> addLiteral(const char* characters, unsigned length);
// Returns null if the input data contains an invalid UTF-8 sequence.
static RefPtr<AtomStringImpl> addUTF8(const char* start, const char* end);
#if USE(CF)
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> add(CFStringRef);
#endif
template<typename StringTableProvider>
ALWAYS_INLINE static RefPtr<AtomStringImpl> addWithStringTableProvider(StringTableProvider& stringTableProvider, StringImpl* string)
{
if (!string)
return nullptr;
return add(*stringTableProvider.atomStringTable(), *string);
}
#if !ASSERT_DISABLED
WTF_EXPORT_PRIVATE static bool isInAtomStringTable(StringImpl*);
#endif
private:
AtomStringImpl() = delete;
ALWAYS_INLINE static Ref<AtomStringImpl> add(StringImpl& string)
{
if (string.isAtom()) {
ASSERT_WITH_MESSAGE(!string.length() || isInAtomStringTable(&string), "The atom string comes from an other thread!");
return static_cast<AtomStringImpl&>(string);
}
return addSlowCase(string);
}
ALWAYS_INLINE static Ref<AtomStringImpl> add(AtomStringTable& stringTable, StringImpl& string)
{
if (string.isAtom()) {
ASSERT_WITH_MESSAGE(!string.length() || isInAtomStringTable(&string), "The atom string comes from an other thread!");
return static_cast<AtomStringImpl&>(string);
}
return addSlowCase(stringTable, string);
}
WTF_EXPORT_PRIVATE static Ref<AtomStringImpl> addSlowCase(StringImpl&);
WTF_EXPORT_PRIVATE static Ref<AtomStringImpl> addSlowCase(AtomStringTable&, StringImpl&);
WTF_EXPORT_PRIVATE static RefPtr<AtomStringImpl> lookUpSlowCase(StringImpl&);
};
#if !ASSERT_DISABLED
// AtomStringImpls created from StaticStringImpl will ASSERT in the generic ValueCheck<T>::checkConsistency,
// as they are not allocated by fastMalloc. We don't currently have any way to detect that case, so we don't
// do any consistency check for AtomStringImpl*.
template<> struct ValueCheck<AtomStringImpl*> {
static void checkConsistency(const AtomStringImpl*) { }
};
template<> struct ValueCheck<const AtomStringImpl*> {
static void checkConsistency(const AtomStringImpl*) { }
};
#endif
}
using WTF::AtomStringImpl;