132 lines
4.1 KiB
C++
132 lines
4.1 KiB
C++
/*
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* Copyright (C) 2007-2014 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#pragma once
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#include <wtf/MainThread.h>
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#include <wtf/text/AtomString.h>
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namespace WebCore {
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class SpaceSplitStringData {
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WTF_MAKE_NONCOPYABLE(SpaceSplitStringData);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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static RefPtr<SpaceSplitStringData> create(const AtomString&);
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bool contains(const AtomString& string)
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{
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const AtomString* data = tokenArrayStart();
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unsigned i = 0;
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do {
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if (data[i] == string)
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return true;
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++i;
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} while (i < m_size);
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return false;
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}
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bool containsAll(SpaceSplitStringData&);
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unsigned size() const { return m_size; }
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static ptrdiff_t sizeMemoryOffset() { return OBJECT_OFFSETOF(SpaceSplitStringData, m_size); }
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const AtomString& operator[](unsigned i)
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{
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RELEASE_ASSERT(i < m_size);
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return tokenArrayStart()[i];
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}
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void ref()
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{
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ASSERT(isMainThread());
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ASSERT(m_refCount);
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++m_refCount;
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}
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void deref()
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{
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ASSERT(isMainThread());
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ASSERT(m_refCount);
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unsigned tempRefCount = m_refCount - 1;
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if (!tempRefCount) {
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destroy(this);
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return;
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}
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m_refCount = tempRefCount;
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}
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static ptrdiff_t tokensMemoryOffset() { return sizeof(SpaceSplitStringData); }
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private:
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static Ref<SpaceSplitStringData> create(const AtomString&, unsigned tokenCount);
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SpaceSplitStringData(const AtomString& string, unsigned size)
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: m_keyString(string)
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, m_refCount(1)
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, m_size(size)
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{
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ASSERT(!string.isEmpty());
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ASSERT_WITH_MESSAGE(m_size, "SpaceSplitStringData should never be empty by definition. There is no difference between empty and null.");
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}
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~SpaceSplitStringData() = default;
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static void destroy(SpaceSplitStringData*);
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AtomString* tokenArrayStart() { return reinterpret_cast<AtomString*>(this + 1); }
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AtomString m_keyString;
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unsigned m_refCount;
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unsigned m_size;
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};
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class SpaceSplitString {
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public:
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SpaceSplitString() = default;
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SpaceSplitString(const AtomString& string, bool shouldFoldCase) { set(string, shouldFoldCase); }
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bool operator!=(const SpaceSplitString& other) const { return m_data != other.m_data; }
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void set(const AtomString&, bool shouldFoldCase);
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void clear() { m_data = nullptr; }
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bool contains(const AtomString& string) const { return m_data && m_data->contains(string); }
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bool containsAll(const SpaceSplitString& names) const { return !names.m_data || (m_data && m_data->containsAll(*names.m_data)); }
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unsigned size() const { return m_data ? m_data->size() : 0; }
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bool isEmpty() const { return !m_data; }
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const AtomString& operator[](unsigned i) const
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{
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ASSERT_WITH_SECURITY_IMPLICATION(m_data);
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return (*m_data)[i];
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}
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static bool spaceSplitStringContainsValue(const String& spaceSplitString, const char* value, unsigned length, bool shouldFoldCase);
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template<size_t length>
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static bool spaceSplitStringContainsValue(const String& spaceSplitString, const char (&value)[length], bool shouldFoldCase)
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{
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return spaceSplitStringContainsValue(spaceSplitString, value, length - 1, shouldFoldCase);
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}
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private:
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RefPtr<SpaceSplitStringData> m_data;
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};
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} // namespace WebCore
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