1 /*
2 * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
4 *
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.
9 *
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.
14 *
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.
19 */
20
21 #include "config.h"
22 #include "core/css/CSSParserValues.h"
23
24 #include "core/css/CSSFunctionValue.h"
25 #include "core/css/CSSSelectorList.h"
26 #include "core/html/parser/HTMLParserIdioms.h"
27
28 namespace WebCore {
29
30 using namespace WTF;
31
destroy(Vector<CSSParserValue,4> & values)32 static void destroy(Vector<CSSParserValue, 4>& values)
33 {
34 size_t numValues = values.size();
35 for (size_t i = 0; i < numValues; i++) {
36 if (values[i].unit == CSSParserValue::Function)
37 delete values[i].function;
38 else if (values[i].unit == CSSParserValue::ValueList)
39 delete values[i].valueList;
40 }
41 }
42
destroyAndClear()43 void CSSParserValueList::destroyAndClear()
44 {
45 destroy(m_values);
46 clearAndLeakValues();
47 }
48
~CSSParserValueList()49 CSSParserValueList::~CSSParserValueList()
50 {
51 destroy(m_values);
52 }
53
addValue(const CSSParserValue & v)54 void CSSParserValueList::addValue(const CSSParserValue& v)
55 {
56 m_values.append(v);
57 }
58
insertValueAt(unsigned i,const CSSParserValue & v)59 void CSSParserValueList::insertValueAt(unsigned i, const CSSParserValue& v)
60 {
61 m_values.insert(i, v);
62 }
63
stealValues(CSSParserValueList & valueList)64 void CSSParserValueList::stealValues(CSSParserValueList& valueList)
65 {
66 for (unsigned i = 0; i < valueList.size(); ++i)
67 m_values.append(*(valueList.valueAt(i)));
68 valueList.clearAndLeakValues();
69 }
70
createCSSValue()71 PassRefPtrWillBeRawPtr<CSSValue> CSSParserValue::createCSSValue()
72 {
73 if (id)
74 return CSSPrimitiveValue::createIdentifier(id);
75
76 if (unit == CSSParserValue::Operator)
77 return CSSPrimitiveValue::createParserOperator(iValue);
78 if (unit == CSSParserValue::Function)
79 return CSSFunctionValue::create(function);
80 if (unit == CSSParserValue::ValueList)
81 return CSSValueList::createFromParserValueList(valueList);
82 if (unit >= CSSParserValue::Q_EMS)
83 return CSSPrimitiveValue::createAllowingMarginQuirk(fValue, CSSPrimitiveValue::CSS_EMS);
84
85 CSSPrimitiveValue::UnitType primitiveUnit = static_cast<CSSPrimitiveValue::UnitType>(unit);
86 switch (primitiveUnit) {
87 case CSSPrimitiveValue::CSS_IDENT:
88 case CSSPrimitiveValue::CSS_PROPERTY_ID:
89 case CSSPrimitiveValue::CSS_VALUE_ID:
90 return CSSPrimitiveValue::create(string, CSSPrimitiveValue::CSS_PARSER_IDENTIFIER);
91 case CSSPrimitiveValue::CSS_NUMBER:
92 return CSSPrimitiveValue::create(fValue, isInt ? CSSPrimitiveValue::CSS_PARSER_INTEGER : CSSPrimitiveValue::CSS_NUMBER);
93 case CSSPrimitiveValue::CSS_STRING:
94 case CSSPrimitiveValue::CSS_URI:
95 case CSSPrimitiveValue::CSS_PARSER_HEXCOLOR:
96 return CSSPrimitiveValue::create(string, primitiveUnit);
97 case CSSPrimitiveValue::CSS_PERCENTAGE:
98 case CSSPrimitiveValue::CSS_EMS:
99 case CSSPrimitiveValue::CSS_EXS:
100 case CSSPrimitiveValue::CSS_PX:
101 case CSSPrimitiveValue::CSS_CM:
102 case CSSPrimitiveValue::CSS_MM:
103 case CSSPrimitiveValue::CSS_IN:
104 case CSSPrimitiveValue::CSS_PT:
105 case CSSPrimitiveValue::CSS_PC:
106 case CSSPrimitiveValue::CSS_DEG:
107 case CSSPrimitiveValue::CSS_RAD:
108 case CSSPrimitiveValue::CSS_GRAD:
109 case CSSPrimitiveValue::CSS_MS:
110 case CSSPrimitiveValue::CSS_S:
111 case CSSPrimitiveValue::CSS_HZ:
112 case CSSPrimitiveValue::CSS_KHZ:
113 case CSSPrimitiveValue::CSS_VW:
114 case CSSPrimitiveValue::CSS_VH:
115 case CSSPrimitiveValue::CSS_VMIN:
116 case CSSPrimitiveValue::CSS_VMAX:
117 case CSSPrimitiveValue::CSS_TURN:
118 case CSSPrimitiveValue::CSS_REMS:
119 case CSSPrimitiveValue::CSS_CHS:
120 case CSSPrimitiveValue::CSS_FR:
121 return CSSPrimitiveValue::create(fValue, primitiveUnit);
122 case CSSPrimitiveValue::CSS_UNKNOWN:
123 case CSSPrimitiveValue::CSS_DIMENSION:
124 case CSSPrimitiveValue::CSS_ATTR:
125 case CSSPrimitiveValue::CSS_COUNTER:
126 case CSSPrimitiveValue::CSS_RECT:
127 case CSSPrimitiveValue::CSS_RGBCOLOR:
128 case CSSPrimitiveValue::CSS_DPPX:
129 case CSSPrimitiveValue::CSS_DPI:
130 case CSSPrimitiveValue::CSS_DPCM:
131 case CSSPrimitiveValue::CSS_PAIR:
132 case CSSPrimitiveValue::CSS_UNICODE_RANGE:
133 case CSSPrimitiveValue::CSS_PARSER_INTEGER:
134 case CSSPrimitiveValue::CSS_PARSER_IDENTIFIER:
135 case CSSPrimitiveValue::CSS_PARSER_OPERATOR:
136 case CSSPrimitiveValue::CSS_COUNTER_NAME:
137 case CSSPrimitiveValue::CSS_SHAPE:
138 case CSSPrimitiveValue::CSS_QUAD:
139 case CSSPrimitiveValue::CSS_CALC:
140 case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_NUMBER:
141 case CSSPrimitiveValue::CSS_CALC_PERCENTAGE_WITH_LENGTH:
142 return nullptr;
143 }
144
145 ASSERT_NOT_REACHED();
146 return nullptr;
147 }
148
CSSParserSelector()149 CSSParserSelector::CSSParserSelector()
150 : m_selector(adoptPtr(new CSSSelector()))
151 {
152 }
153
CSSParserSelector(const QualifiedName & tagQName)154 CSSParserSelector::CSSParserSelector(const QualifiedName& tagQName)
155 : m_selector(adoptPtr(new CSSSelector(tagQName)))
156 {
157 }
158
~CSSParserSelector()159 CSSParserSelector::~CSSParserSelector()
160 {
161 if (!m_tagHistory)
162 return;
163 Vector<OwnPtr<CSSParserSelector>, 16> toDelete;
164 OwnPtr<CSSParserSelector> selector = m_tagHistory.release();
165 while (true) {
166 OwnPtr<CSSParserSelector> next = selector->m_tagHistory.release();
167 toDelete.append(selector.release());
168 if (!next)
169 break;
170 selector = next.release();
171 }
172 }
173
adoptSelectorVector(Vector<OwnPtr<CSSParserSelector>> & selectorVector)174 void CSSParserSelector::adoptSelectorVector(Vector<OwnPtr<CSSParserSelector> >& selectorVector)
175 {
176 CSSSelectorList* selectorList = new CSSSelectorList();
177 selectorList->adoptSelectorVector(selectorVector);
178 m_selector->setSelectorList(adoptPtr(selectorList));
179 }
180
isSimple() const181 bool CSSParserSelector::isSimple() const
182 {
183 if (m_selector->selectorList() || m_selector->matchesPseudoElement())
184 return false;
185
186 if (!m_tagHistory)
187 return true;
188
189 if (m_selector->match() == CSSSelector::Tag) {
190 // We can't check against anyQName() here because namespace may not be nullAtom.
191 // Example:
192 // @namespace "http://www.w3.org/2000/svg";
193 // svg:not(:root) { ...
194 if (m_selector->tagQName().localName() == starAtom)
195 return m_tagHistory->isSimple();
196 }
197
198 return false;
199 }
200
insertTagHistory(CSSSelector::Relation before,PassOwnPtr<CSSParserSelector> selector,CSSSelector::Relation after)201 void CSSParserSelector::insertTagHistory(CSSSelector::Relation before, PassOwnPtr<CSSParserSelector> selector, CSSSelector::Relation after)
202 {
203 if (m_tagHistory)
204 selector->setTagHistory(m_tagHistory.release());
205 setRelation(before);
206 selector->setRelation(after);
207 m_tagHistory = selector;
208 }
209
appendTagHistory(CSSSelector::Relation relation,PassOwnPtr<CSSParserSelector> selector)210 void CSSParserSelector::appendTagHistory(CSSSelector::Relation relation, PassOwnPtr<CSSParserSelector> selector)
211 {
212 CSSParserSelector* end = this;
213 while (end->tagHistory())
214 end = end->tagHistory();
215 end->setRelation(relation);
216 end->setTagHistory(selector);
217 }
218
prependTagSelector(const QualifiedName & tagQName,bool tagIsForNamespaceRule)219 void CSSParserSelector::prependTagSelector(const QualifiedName& tagQName, bool tagIsForNamespaceRule)
220 {
221 OwnPtr<CSSParserSelector> second = adoptPtr(new CSSParserSelector);
222 second->m_selector = m_selector.release();
223 second->m_tagHistory = m_tagHistory.release();
224 m_tagHistory = second.release();
225
226 m_selector = adoptPtr(new CSSSelector(tagQName, tagIsForNamespaceRule));
227 m_selector->setRelation(CSSSelector::SubSelector);
228 }
229
hasHostPseudoSelector() const230 bool CSSParserSelector::hasHostPseudoSelector() const
231 {
232 CSSParserSelector* selector = const_cast<CSSParserSelector*>(this);
233 do {
234 if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoHostContext)
235 return true;
236 } while ((selector = selector->tagHistory()));
237 return false;
238 }
239
240 } // namespace WebCore
241