mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
275 lines
8.2 KiB
C++
275 lines
8.2 KiB
C++
/*
|
|
* 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 "core/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 blink {
|
|
|
|
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;
|
|
}
|
|
|
|
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); }
|
|
|
|
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;
|
|
class CSSParserValueList;
|
|
|
|
struct CSSParserValue {
|
|
CSSValueID id;
|
|
bool isInt;
|
|
union {
|
|
double fValue;
|
|
int iValue;
|
|
CSSParserString string;
|
|
CSSParserFunction* function;
|
|
CSSParserValueList* valueList;
|
|
};
|
|
enum {
|
|
Operator = 0x100000,
|
|
Function = 0x100001,
|
|
ValueList = 0x100002,
|
|
};
|
|
int unit;
|
|
|
|
inline void setFromNumber(double value, int unit = CSSPrimitiveValue::CSS_NUMBER);
|
|
inline void setFromFunction(CSSParserFunction*);
|
|
inline void setFromValueList(PassOwnPtr<CSSParserValueList>);
|
|
};
|
|
|
|
class CSSParserValueList {
|
|
WTF_MAKE_FAST_ALLOCATED;
|
|
public:
|
|
CSSParserValueList()
|
|
: m_current(0)
|
|
{
|
|
}
|
|
~CSSParserValueList();
|
|
|
|
void addValue(const CSSParserValue&);
|
|
void insertValueAt(unsigned, const CSSParserValue&);
|
|
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 clearAndLeakValues() { m_values.clear(); m_current = 0;}
|
|
void destroyAndClear();
|
|
|
|
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(); }
|
|
|
|
void setValue(const AtomicString& value) { m_selector->setValue(value); }
|
|
void setAttribute(const QualifiedName& value, CSSSelector::AttributeMatchType matchType) { m_selector->setAttribute(value, matchType); }
|
|
void setArgument(const AtomicString& value) { m_selector->setArgument(value); }
|
|
void setMatch(CSSSelector::Match value) { m_selector->setMatch(value); }
|
|
|
|
void adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector);
|
|
|
|
bool hasHostPseudoSelector() const;
|
|
|
|
CSSSelector::PseudoType pseudoType() const { return m_selector->pseudoType(); }
|
|
bool isCustomPseudoElement() const { return m_selector->isCustomPseudoElement(); }
|
|
|
|
bool isSimple() const;
|
|
|
|
CSSParserSelector* tagHistory() const { return m_tagHistory.get(); }
|
|
void setTagHistory(PassOwnPtr<CSSParserSelector> selector) { m_tagHistory = selector; }
|
|
void clearTagHistory() { m_tagHistory.clear(); }
|
|
void appendTagHistory(PassOwnPtr<CSSParserSelector>);
|
|
void prependTagSelector(const QualifiedName&, bool tagIsForNamespaceRule = false);
|
|
|
|
private:
|
|
OwnPtr<CSSSelector> m_selector;
|
|
OwnPtr<CSSParserSelector> m_tagHistory;
|
|
};
|
|
|
|
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;
|
|
isInt = false;
|
|
}
|
|
|
|
inline void CSSParserValue::setFromValueList(PassOwnPtr<CSSParserValueList> valueList)
|
|
{
|
|
id = CSSValueInvalid;
|
|
this->valueList = valueList.leakPtr();
|
|
unit = ValueList;
|
|
isInt = false;
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|