#ifndef CSSParserValues_h
#define CSSParserValues_h
#include "CSSValueKeywords.h"
#include "core/css/CSSPrimitiveValue.h"
#include "core/css/CSSSelector.h"
#include "core/css/CSSValueList.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
class CSSValue;
class QualifiedName;
struct CSSParserString {
void init(const LChar* characters, unsigned length)
{
m_data.characters8 = characters;
m_length = length;
m_is8Bit = true;
}
void init(const UChar* characters, unsigned length)
{
m_data.characters16 = characters;
m_length = length;
m_is8Bit = false;
}
void init(const String& string)
{
init(string, 0, string.length());
}
void init(const String& string, unsigned startOffset, unsigned length)
{
m_length = length;
if (!m_length) {
m_data.characters8 = 0;
m_is8Bit = true;
return;
}
if (string.is8Bit()) {
m_data.characters8 = const_cast<LChar*>(string.characters8()) + startOffset;
m_is8Bit = true;
} else {
m_data.characters16 = const_cast<UChar*>(string.characters16()) + startOffset;
m_is8Bit = false;
}
}
void clear()
{
m_data.characters8 = 0;
m_length = 0;
m_is8Bit = true;
}
void trimTrailingWhitespace();
bool is8Bit() const { return m_is8Bit; }
const LChar* characters8() const { ASSERT(is8Bit()); return m_data.characters8; }
const UChar* characters16() const { ASSERT(!is8Bit()); return m_data.characters16; }
template <typename CharacterType>
const CharacterType* characters() const;
unsigned length() const { return m_length; }
void setLength(unsigned length) { m_length = length; }
UChar operator[](unsigned i) const
{
ASSERT_WITH_SECURITY_IMPLICATION(i < m_length);
if (is8Bit())
return m_data.characters8[i];
return m_data.characters16[i];
}
bool equalIgnoringCase(const char* str) const
{
bool match = is8Bit() ? WTF::equalIgnoringCase(str, characters8(), length()) : WTF::equalIgnoringCase(str, characters16(), length());
if (!match)
return false;
ASSERT(strlen(str) >= length());
return str[length()] == '\0';
}
template <size_t strLength>
bool startsWithIgnoringCase(const char (&str)[strLength]) const
{
return startsWithIgnoringCase(str, strLength - 1);
}
bool startsWithIgnoringCase(const char* str, size_t strLength) const
{
if (length() < strLength)
return false;
return is8Bit() ? WTF::equalIgnoringCase(str, characters8(), strLength) : WTF::equalIgnoringCase(str, characters16(), strLength);
}
operator String() const { return is8Bit() ? String(m_data.characters8, m_length) : StringImpl::create8BitIfPossible(m_data.characters16, m_length); }
operator AtomicString() const { return is8Bit() ? AtomicString(m_data.characters8, m_length) : AtomicString(m_data.characters16, m_length); }
AtomicString atomicSubstring(unsigned position, unsigned length) const;
bool isFunction() const { return length() > 0 && (*this)[length() - 1] == '('; }
union {
const LChar* characters8;
const UChar* characters16;
} m_data;
unsigned m_length;
bool m_is8Bit;
};
template <>
inline const LChar* CSSParserString::characters<LChar>() const { return characters8(); }
template <>
inline const UChar* CSSParserString::characters<UChar>() const { return characters16(); }
struct CSSParserFunction;
struct CSSParserValue {
CSSValueID id;
bool isInt;
union {
double fValue;
int iValue;
CSSParserString string;
CSSParserFunction* function;
CSSParserValueList* valueList;
};
enum {
Operator = 0x100000,
Function = 0x100001,
ValueList = 0x100002,
Q_EMS = 0x100003,
};
int unit;
inline void setFromNumber(double value, int unit = CSSPrimitiveValue::CSS_NUMBER);
inline void setFromFunction(CSSParserFunction*);
inline void setFromValueList(PassOwnPtr<CSSParserValueList>);
PassRefPtrWillBeRawPtr<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 stealValues(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();
}
void setCurrentIndex(unsigned index)
{
ASSERT(index < m_values.size());
if (index < m_values.size())
m_current = index;
}
CSSParserValue* valueAt(unsigned i) { return i < m_values.size() ? &m_values[i] : 0; }
void clear() { m_values.clear(); m_current = 0;}
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_NONCOPYABLE(CSSParserSelector); WTF_MAKE_FAST_ALLOCATED;
public:
CSSParserSelector();
explicit CSSParserSelector(const QualifiedName&);
~CSSParserSelector();
PassOwnPtr<CSSSelector> releaseSelector() { return m_selector.release(); }
CSSSelector::Relation relation() const { return m_selector->relation(); }
void setValue(const AtomicString& value) { m_selector->setValue(value); }
void setAttribute(const QualifiedName& value) { m_selector->setAttribute(value); }
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 setRelationIsAffectedByPseudoContent() { m_selector->setRelationIsAffectedByPseudoContent(); }
bool relationIsAffectedByPseudoContent() const { return m_selector->relationIsAffectedByPseudoContent(); }
void adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector);
bool hasHostPseudoSelector() const;
bool isContentPseudoElement() const { return m_selector->isContentPseudoElement(); }
CSSSelector::PseudoType pseudoType() const { return m_selector->pseudoType(); }
bool isCustomPseudoElement() const { return m_selector->isCustomPseudoElement(); }
bool crossesTreeScopes() const { return isCustomPseudoElement() || pseudoType() == CSSSelector::PseudoCue || pseudoType() == CSSSelector::PseudoShadow; }
bool isSimple() const;
bool hasShadowPseudo() 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::hasShadowPseudo() const
{
return m_selector->relation() == CSSSelector::ShadowPseudo;
}
inline void CSSParserValue::setFromNumber(double value, int unit)
{
id = CSSValueInvalid;
isInt = false;
if (std::isfinite(value))
fValue = value;
else
fValue = 0;
this->unit = unit;
}
inline void CSSParserValue::setFromFunction(CSSParserFunction* function)
{
id = CSSValueInvalid;
this->function = function;
unit = Function;
}
inline void CSSParserValue::setFromValueList(PassOwnPtr<CSSParserValueList> valueList)
{
id = CSSValueInvalid;
this->valueList = valueList.leakPtr();
unit = ValueList;
}
}
#endif