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/*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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.
*/
#ifndef CSSParserValues_h
#define CSSParserValues_h
#include "CSSSelector.h"
#include "CSSValueKeywords.h"
#include "CSSValueList.h"
#include <wtf/text/AtomicString.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSValue;
class QualifiedName;
struct CSSParserString {
void init(LChar* characters, unsigned length)
{
m_data.characters8 = characters;
m_length = length;
m_is8Bit = true;
}
void init(UChar* characters, unsigned length)
{
m_data.characters16 = characters;
m_length = length;
m_is8Bit = false;
}
void init(const String& string)
{
m_length = string.length();
if (!m_length || string.is8Bit()) {
m_data.characters8 = const_cast<LChar*>(string.characters8());
m_is8Bit = true;
} else {
m_data.characters16 = const_cast<UChar*>(string.characters16());
m_is8Bit = false;
}
}
void clear()
{
m_data.characters8 = 0;
m_length = 0;
m_is8Bit = true;
}
bool is8Bit() const { return m_is8Bit; }
LChar* characters8() const { ASSERT(is8Bit()); return m_data.characters8; }
UChar* characters16() const { ASSERT(!is8Bit()); return m_data.characters16; }
template <typename CharacterType>
CharacterType* characters() const;
unsigned length() const { return m_length; }
void setLength(unsigned length) { m_length = length; }
void lower();
UChar operator[](unsigned i)
{
ASSERT_WITH_SECURITY_IMPLICATION(i < m_length);
if (is8Bit())
return m_data.characters8[i];
return m_data.characters16[i];
}
bool equalIgnoringCase(const char* str)
{
if (is8Bit())
return WTF::equalIgnoringCase(str, characters8(), length());
return WTF::equalIgnoringCase(str, characters16(), length());
}
operator String() const { return is8Bit() ? String(m_data.characters8, m_length) : String(m_data.characters16, m_length); }
operator AtomicString() const { return is8Bit() ? AtomicString(m_data.characters8, m_length) : AtomicString(m_data.characters16, m_length); }
#if ENABLE(CSS_VARIABLES)
AtomicString substring(unsigned position, unsigned length) const;
#endif
union {
LChar* characters8;
UChar* characters16;
} m_data;
unsigned m_length;
bool m_is8Bit;
};
struct CSSParserFunction;
struct CSSParserValue {
CSSValueID id;
bool isInt;
union {
double fValue;
int iValue;
CSSParserString string;
CSSParserFunction* function;
};
enum {
Operator = 0x100000,
Function = 0x100001,
Q_EMS = 0x100002
};
int unit;
PassRefPtr<CSSValue> createCSSValue();
};
class CSSParserValueList {
WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserValueList()
: m_current(0)
{
}
~CSSParserValueList();
void addValue(const CSSParserValue&);
void insertValueAt(unsigned, const CSSParserValue&);
void deleteValueAt(unsigned);
void extend(CSSParserValueList&);
unsigned size() const { return m_values.size(); }
unsigned currentIndex() { return m_current; }
CSSParserValue* current() { return m_current < m_values.size() ? &m_values[m_current] : 0; }
CSSParserValue* next() { ++m_current; return current(); }
CSSParserValue* previous()
{
if (!m_current)
return 0;
--m_current;
return current();
}
CSSParserValue* valueAt(unsigned i) { return i < m_values.size() ? &m_values[i] : 0; }
void clear() { m_values.clear(); }
private:
unsigned m_current;
Vector<CSSParserValue, 4> m_values;
};
struct CSSParserFunction {
WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserString name;
OwnPtr<CSSParserValueList> args;
};
class CSSParserSelector {
WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserSelector();
explicit CSSParserSelector(const QualifiedName&);
~CSSParserSelector();
PassOwnPtr<CSSSelector> releaseSelector() { return m_selector.release(); }
void setValue(const AtomicString& value) { m_selector->setValue(value); }
void setAttribute(const QualifiedName& value, bool isCaseInsensitive) { m_selector->setAttribute(value, isCaseInsensitive); }
void setArgument(const AtomicString& value) { m_selector->setArgument(value); }
void setMatch(CSSSelector::Match value) { m_selector->m_match = value; }
void setRelation(CSSSelector::Relation value) { m_selector->m_relation = value; }
void setForPage() { m_selector->setForPage(); }
void adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector);
CSSSelector::PseudoType pseudoType() const { return m_selector->pseudoType(); }
bool isCustomPseudoElement() const { return m_selector->isCustomPseudoElement(); }
bool isSimple() const;
bool hasShadowDescendant() const;
CSSParserSelector* tagHistory() const { return m_tagHistory.get(); }
void setTagHistory(PassOwnPtr<CSSParserSelector> selector) { m_tagHistory = selector; }
void clearTagHistory() { m_tagHistory.clear(); }
void insertTagHistory(CSSSelector::Relation before, PassOwnPtr<CSSParserSelector>, CSSSelector::Relation after);
void appendTagHistory(CSSSelector::Relation, PassOwnPtr<CSSParserSelector>);
void prependTagSelector(const QualifiedName&, bool tagIsForNamespaceRule = false);
private:
OwnPtr<CSSSelector> m_selector;
OwnPtr<CSSParserSelector> m_tagHistory;
};
inline bool CSSParserSelector::hasShadowDescendant() const
{
return m_selector->relation() == CSSSelector::ShadowDescendant;
}
}
#endif
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