2 * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
21 #ifndef CSSParserValues_h
22 #define CSSParserValues_h
24 #include "core/CSSValueKeywords.h"
25 #include "core/css/CSSPrimitiveValue.h"
26 #include "core/css/CSSSelector.h"
27 #include "core/css/CSSValueList.h"
28 #include "wtf/text/AtomicString.h"
29 #include "wtf/text/WTFString.h"
35 struct CSSParserString {
36 void init(const LChar* characters, unsigned length)
38 m_data.characters8 = characters;
43 void init(const UChar* characters, unsigned length)
45 m_data.characters16 = characters;
50 void init(const String& string)
52 init(string, 0, string.length());
55 void init(const String& string, unsigned startOffset, unsigned length)
59 m_data.characters8 = 0;
63 if (string.is8Bit()) {
64 m_data.characters8 = const_cast<LChar*>(string.characters8()) + startOffset;
67 m_data.characters16 = const_cast<UChar*>(string.characters16()) + startOffset;
74 m_data.characters8 = 0;
79 bool is8Bit() const { return m_is8Bit; }
80 const LChar* characters8() const { ASSERT(is8Bit()); return m_data.characters8; }
81 const UChar* characters16() const { ASSERT(!is8Bit()); return m_data.characters16; }
82 template <typename CharacterType>
83 const CharacterType* characters() const;
85 unsigned length() const { return m_length; }
86 void setLength(unsigned length) { m_length = length; }
88 UChar operator[](unsigned i) const
90 ASSERT_WITH_SECURITY_IMPLICATION(i < m_length);
92 return m_data.characters8[i];
93 return m_data.characters16[i];
96 bool equalIgnoringCase(const char* str) const
98 bool match = is8Bit() ? WTF::equalIgnoringCase(str, characters8(), length()) : WTF::equalIgnoringCase(str, characters16(), length());
101 ASSERT(strlen(str) >= length());
102 return str[length()] == '\0';
105 template <size_t strLength>
106 bool startsWithIgnoringCase(const char (&str)[strLength]) const
108 return startsWithIgnoringCase(str, strLength - 1);
111 bool startsWithIgnoringCase(const char* str, size_t strLength) const
113 if (length() < strLength)
115 return is8Bit() ? WTF::equalIgnoringCase(str, characters8(), strLength) : WTF::equalIgnoringCase(str, characters16(), strLength);
118 operator String() const { return is8Bit() ? String(m_data.characters8, m_length) : StringImpl::create8BitIfPossible(m_data.characters16, m_length); }
119 operator AtomicString() const { return is8Bit() ? AtomicString(m_data.characters8, m_length) : AtomicString(m_data.characters16, m_length); }
121 bool isFunction() const { return length() > 0 && (*this)[length() - 1] == '('; }
124 const LChar* characters8;
125 const UChar* characters16;
132 inline const LChar* CSSParserString::characters<LChar>() const { return characters8(); }
135 inline const UChar* CSSParserString::characters<UChar>() const { return characters16(); }
137 struct CSSParserFunction;
138 class CSSParserValueList;
140 struct CSSParserValue {
146 CSSParserString string;
147 CSSParserFunction* function;
148 CSSParserValueList* valueList;
153 ValueList = 0x100002,
158 inline void setFromNumber(double value, int unit = CSSPrimitiveValue::CSS_NUMBER);
159 inline void setFromFunction(CSSParserFunction*);
160 inline void setFromValueList(PassOwnPtr<CSSParserValueList>);
163 class CSSParserValueList {
164 WTF_MAKE_FAST_ALLOCATED;
170 ~CSSParserValueList();
172 void addValue(const CSSParserValue&);
173 void insertValueAt(unsigned, const CSSParserValue&);
174 void stealValues(CSSParserValueList&);
176 unsigned size() const { return m_values.size(); }
177 unsigned currentIndex() { return m_current; }
178 CSSParserValue* current() { return m_current < m_values.size() ? &m_values[m_current] : 0; }
179 CSSParserValue* next() { ++m_current; return current(); }
180 CSSParserValue* previous()
187 void setCurrentIndex(unsigned index)
189 ASSERT(index < m_values.size());
190 if (index < m_values.size())
194 CSSParserValue* valueAt(unsigned i) { return i < m_values.size() ? &m_values[i] : 0; }
196 void clearAndLeakValues() { m_values.clear(); m_current = 0;}
197 void destroyAndClear();
201 Vector<CSSParserValue, 4> m_values;
204 struct CSSParserFunction {
205 WTF_MAKE_FAST_ALLOCATED;
208 OwnPtr<CSSParserValueList> args;
211 class CSSParserSelector {
212 WTF_MAKE_NONCOPYABLE(CSSParserSelector); WTF_MAKE_FAST_ALLOCATED;
215 explicit CSSParserSelector(const QualifiedName&);
216 ~CSSParserSelector();
218 PassOwnPtr<CSSSelector> releaseSelector() { return m_selector.release(); }
220 CSSSelector::Relation relation() const { return m_selector->relation(); }
221 void setValue(const AtomicString& value) { m_selector->setValue(value); }
222 void setAttribute(const QualifiedName& value, CSSSelector::AttributeMatchType matchType) { m_selector->setAttribute(value, matchType); }
223 void setArgument(const AtomicString& value) { m_selector->setArgument(value); }
224 void setMatch(CSSSelector::Match value) { m_selector->setMatch(value); }
225 void setRelation(CSSSelector::Relation value) { m_selector->setRelation(value); }
226 void setForPage() { m_selector->setForPage(); }
227 void setRelationIsAffectedByPseudoContent() { m_selector->setRelationIsAffectedByPseudoContent(); }
228 bool relationIsAffectedByPseudoContent() const { return m_selector->relationIsAffectedByPseudoContent(); }
230 void adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector);
232 bool hasHostPseudoSelector() const;
233 bool isContentPseudoElement() const { return m_selector->isContentPseudoElement(); }
235 CSSSelector::PseudoType pseudoType() const { return m_selector->pseudoType(); }
236 bool isCustomPseudoElement() const { return m_selector->isCustomPseudoElement(); }
237 bool crossesTreeScopes() const { return isCustomPseudoElement() || pseudoType() == CSSSelector::PseudoCue || pseudoType() == CSSSelector::PseudoShadow; }
239 bool isSimple() const;
240 bool hasShadowPseudo() const;
242 CSSParserSelector* tagHistory() const { return m_tagHistory.get(); }
243 void setTagHistory(PassOwnPtr<CSSParserSelector> selector) { m_tagHistory = selector; }
244 void clearTagHistory() { m_tagHistory.clear(); }
245 void insertTagHistory(CSSSelector::Relation before, PassOwnPtr<CSSParserSelector>, CSSSelector::Relation after);
246 void appendTagHistory(CSSSelector::Relation, PassOwnPtr<CSSParserSelector>);
247 void prependTagSelector(const QualifiedName&, bool tagIsForNamespaceRule = false);
250 OwnPtr<CSSSelector> m_selector;
251 OwnPtr<CSSParserSelector> m_tagHistory;
254 inline bool CSSParserSelector::hasShadowPseudo() const
256 return m_selector->relation() == CSSSelector::ShadowPseudo;
259 inline void CSSParserValue::setFromNumber(double value, int unit)
261 id = CSSValueInvalid;
263 if (std::isfinite(value))
270 inline void CSSParserValue::setFromFunction(CSSParserFunction* function)
272 id = CSSValueInvalid;
273 this->function = function;
278 inline void CSSParserValue::setFromValueList(PassOwnPtr<CSSParserValueList> valueList)
280 id = CSSValueInvalid;
281 this->valueList = valueList.leakPtr();