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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004-2022 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 "CSSValue.h"
#include <array>
#include <unicode/umachine.h>
#include <wtf/MallocSpan.h>
namespace WebCore {
static constexpr size_t CSSValueListBuilderInlineCapacity = 4;
using CSSValueListBuilder = Vector<Ref<CSSValue>, CSSValueListBuilderInlineCapacity>;
class CSSValueContainingVector : public CSSValue {
public:
unsigned size() const { return m_size; }
const CSSValue& operator[](unsigned index) const;
struct iterator {
using iterator_category = std::forward_iterator_tag;
using value_type = const CSSValue&;
using difference_type = ptrdiff_t;
using pointer = const CSSValue*;
using reference = const CSSValue&;
const CSSValue& operator*() const { return vector[index]; }
iterator& operator++() { ++index; return *this; }
constexpr bool operator==(const iterator& other) const { return index == other.index; }
const CSSValueContainingVector& vector;
unsigned index { 0 };
};
using const_iterator = iterator;
iterator begin() const { return { *this, 0 }; }
iterator end() const { return { *this, size() }; }
bool hasValue(CSSValue&) const;
bool hasValue(CSSValueID) const;
void serializeItems(StringBuilder&, const CSS::SerializationContext&) const;
String serializeItems(const CSS::SerializationContext&) const;
bool itemsEqual(const CSSValueContainingVector&) const;
bool containsSingleEqualItem(const CSSValue&) const;
using CSSValue::separator;
using CSSValue::separatorCSSText;
bool customTraverseSubresources(NOESCAPE const Function<bool(const CachedResource&)>&) const;
CSSValueListBuilder copyValues() const;
// Consider removing these functions and having callers use size() and operator[] instead.
unsigned length() const { return size(); }
const CSSValue* item(unsigned index) const { return index < size() ? &(*this)[index] : nullptr; }
RefPtr<const CSSValue> protectedItem(unsigned index) const { return item(index); }
const CSSValue* itemWithoutBoundsCheck(unsigned index) const { return &(*this)[index]; }
IterationStatus customVisitChildren(NOESCAPE const Function<IterationStatus(CSSValue&)>&) const;
protected:
friend bool CSSValue::addHash(Hasher&) const;
CSSValueContainingVector(ClassType, ValueSeparator);
CSSValueContainingVector(ClassType, ValueSeparator, CSSValueListBuilder);
CSSValueContainingVector(ClassType, ValueSeparator, Ref<CSSValue>);
CSSValueContainingVector(ClassType, ValueSeparator, Ref<CSSValue>, Ref<CSSValue>);
CSSValueContainingVector(ClassType, ValueSeparator, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
CSSValueContainingVector(ClassType, ValueSeparator, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
~CSSValueContainingVector();
bool addDerivedHash(Hasher&) const;
private:
unsigned m_size { 0 };
std::array<const CSSValue*, 4> m_inlineStorage;
MallocSpan<const CSSValue*> m_additionalStorage;
};
class CSSValueList final : public CSSValueContainingVector {
public:
static Ref<CSSValueList> create(UChar separator, CSSValueListBuilder);
static Ref<CSSValueList> createCommaSeparated(CSSValueListBuilder);
static Ref<CSSValueList> createCommaSeparated(Ref<CSSValue>); // FIXME: Upgrade callers to not use a list at all.
static Ref<CSSValueList> createSpaceSeparated(CSSValueListBuilder);
static Ref<CSSValueList> createSpaceSeparated(); // FIXME: Get rid of the caller that needs to create an empty list.
static Ref<CSSValueList> createSpaceSeparated(Ref<CSSValue>); // FIXME: Upgrade callers to not use a list at all.
static Ref<CSSValueList> createSpaceSeparated(Ref<CSSValue>, Ref<CSSValue>);
static Ref<CSSValueList> createSpaceSeparated(Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
static Ref<CSSValueList> createSpaceSeparated(Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
static Ref<CSSValueList> createSlashSeparated(CSSValueListBuilder);
static Ref<CSSValueList> createSlashSeparated(Ref<CSSValue>); // FIXME: Upgrade callers to not use a list at all.
static Ref<CSSValueList> createSlashSeparated(Ref<CSSValue>, Ref<CSSValue>);
String customCSSText(const CSS::SerializationContext&) const;
bool equals(const CSSValueList&) const;
private:
friend void add(Hasher&, const CSSValueList&);
explicit CSSValueList(ValueSeparator);
CSSValueList(ValueSeparator, CSSValueListBuilder);
CSSValueList(ValueSeparator, Ref<CSSValue>);
CSSValueList(ValueSeparator, Ref<CSSValue>, Ref<CSSValue>);
CSSValueList(ValueSeparator, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
CSSValueList(ValueSeparator, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>, Ref<CSSValue>);
};
inline CSSValueContainingVector::~CSSValueContainingVector()
{
for (auto& value : *this)
value.deref();
}
inline const CSSValue& CSSValueContainingVector::operator[](unsigned index) const
{
unsigned maxInlineSize = m_inlineStorage.size();
if (index < maxInlineSize) {
ASSERT(index < m_size);
return *m_inlineStorage[index];
}
ASSERT(index < m_size);
return *m_additionalStorage[index - maxInlineSize];
}
void add(Hasher&, const CSSValueContainingVector&);
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSValueContainingVector, containsVector())
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSValueList, isValueList())
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