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Issue 100453011: Rename css/CSSParser to css/parser/BisonCSSParser. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 6 years, 11 months ago
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1 /*
2 * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
4 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
5 * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
6 * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
7 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmo bile.com/)
8 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
9 * Copyright (C) 2012 Intel Corporation. All rights reserved.
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Library General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Library General Public License for more details.
20 *
21 * You should have received a copy of the GNU Library General Public License
22 * along with this library; see the file COPYING.LIB. If not, write to
23 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 * Boston, MA 02110-1301, USA.
25 */
26
27 #include "config.h"
28 #include "core/css/CSSParser.h"
29
30 #include "CSSValueKeywords.h"
31 #include "RuntimeEnabledFeatures.h"
32 #include "StylePropertyShorthand.h"
33 #include "core/css/CSSArrayFunctionValue.h"
34 #include "core/css/CSSAspectRatioValue.h"
35 #include "core/css/CSSBasicShapes.h"
36 #include "core/css/CSSBorderImage.h"
37 #include "core/css/CSSCanvasValue.h"
38 #include "core/css/CSSCrossfadeValue.h"
39 #include "core/css/CSSCursorImageValue.h"
40 #include "core/css/CSSFontFaceSrcValue.h"
41 #include "core/css/CSSFontFeatureValue.h"
42 #include "core/css/CSSFunctionValue.h"
43 #include "core/css/CSSGradientValue.h"
44 #include "core/css/CSSGridLineNamesValue.h"
45 #include "core/css/CSSGridTemplateValue.h"
46 #include "core/css/CSSImageSetValue.h"
47 #include "core/css/CSSImageValue.h"
48 #include "core/css/CSSInheritedValue.h"
49 #include "core/css/CSSInitialValue.h"
50 #include "core/css/CSSKeyframeRule.h"
51 #include "core/css/CSSKeyframesRule.h"
52 #include "core/css/CSSLineBoxContainValue.h"
53 #include "core/css/CSSMixFunctionValue.h"
54 #include "core/css/CSSPrimitiveValue.h"
55 #include "core/css/CSSPropertySourceData.h"
56 #include "core/css/CSSReflectValue.h"
57 #include "core/css/CSSSVGDocumentValue.h"
58 #include "core/css/CSSSelector.h"
59 #include "core/css/CSSShaderValue.h"
60 #include "core/css/CSSShadowValue.h"
61 #include "core/css/CSSStyleSheet.h"
62 #include "core/css/CSSTimingFunctionValue.h"
63 #include "core/css/CSSTransformValue.h"
64 #include "core/css/CSSUnicodeRangeValue.h"
65 #include "core/css/CSSValueList.h"
66 #include "core/css/CSSValuePool.h"
67 #include "core/css/CSSVariableValue.h"
68 #include "core/css/Counter.h"
69 #include "core/css/HashTools.h"
70 #include "core/css/MediaList.h"
71 #include "core/css/MediaQueryExp.h"
72 #include "core/css/Pair.h"
73 #include "core/css/Rect.h"
74 #include "core/css/StylePropertySet.h"
75 #include "core/css/StyleRule.h"
76 #include "core/css/StyleRuleImport.h"
77 #include "core/css/StyleSheetContents.h"
78 #include "core/css/parser/CSSParserIdioms.h"
79 #include "core/dom/Document.h"
80 #include "core/frame/FrameHost.h"
81 #include "core/frame/PageConsole.h"
82 #include "core/frame/Settings.h"
83 #include "core/html/parser/HTMLParserIdioms.h"
84 #include "core/inspector/InspectorInstrumentation.h"
85 #include "core/rendering/RenderTheme.h"
86 #include "core/svg/SVGParserUtilities.h"
87 #include "platform/FloatConversion.h"
88 #include "wtf/BitArray.h"
89 #include "wtf/HexNumber.h"
90 #include "wtf/text/StringBuffer.h"
91 #include "wtf/text/StringBuilder.h"
92 #include "wtf/text/StringImpl.h"
93 #include "wtf/text/TextEncoding.h"
94 #include <limits.h>
95
96 #define YYDEBUG 0
97
98 #if YYDEBUG > 0
99 extern int cssyydebug;
100 #endif
101
102 extern int cssyyparse(WebCore::CSSParser*);
103
104 using namespace std;
105 using namespace WTF;
106
107 namespace WebCore {
108
109 static const unsigned INVALID_NUM_PARSED_PROPERTIES = UINT_MAX;
110 static const double MAX_SCALE = 1000000;
111
112 template <unsigned N>
113 static bool equal(const CSSParserString& a, const char (&b)[N])
114 {
115 unsigned length = N - 1; // Ignore the trailing null character
116 if (a.length() != length)
117 return false;
118
119 return a.is8Bit() ? WTF::equal(a.characters8(), reinterpret_cast<const LChar *>(b), length) : WTF::equal(a.characters16(), reinterpret_cast<const LChar*>(b), length);
120 }
121
122 template <unsigned N>
123 static bool equalIgnoringCase(const CSSParserString& a, const char (&b)[N])
124 {
125 unsigned length = N - 1; // Ignore the trailing null character
126 if (a.length() != length)
127 return false;
128
129 return a.is8Bit() ? WTF::equalIgnoringCase(b, a.characters8(), length) : WTF ::equalIgnoringCase(b, a.characters16(), length);
130 }
131
132 template <unsigned N>
133 static bool equalIgnoringCase(CSSParserValue* value, const char (&b)[N])
134 {
135 ASSERT(value->unit == CSSPrimitiveValue::CSS_IDENT || value->unit == CSSPrim itiveValue::CSS_STRING);
136 return equalIgnoringCase(value->string, b);
137 }
138
139 static PassRefPtr<CSSPrimitiveValue> createPrimitiveValuePair(PassRefPtr<CSSPrim itiveValue> first, PassRefPtr<CSSPrimitiveValue> second, Pair::IdenticalValuesPo licy identicalValuesPolicy = Pair::DropIdenticalValues)
140 {
141 return cssValuePool().createValue(Pair::create(first, second, identicalValue sPolicy));
142 }
143
144 class AnimationParseContext {
145 public:
146 AnimationParseContext()
147 : m_animationPropertyKeywordAllowed(true)
148 , m_firstAnimationCommitted(false)
149 , m_hasSeenAnimationPropertyKeyword(false)
150 {
151 }
152
153 void commitFirstAnimation()
154 {
155 m_firstAnimationCommitted = true;
156 }
157
158 bool hasCommittedFirstAnimation() const
159 {
160 return m_firstAnimationCommitted;
161 }
162
163 void commitAnimationPropertyKeyword()
164 {
165 m_animationPropertyKeywordAllowed = false;
166 }
167
168 bool animationPropertyKeywordAllowed() const
169 {
170 return m_animationPropertyKeywordAllowed;
171 }
172
173 bool hasSeenAnimationPropertyKeyword() const
174 {
175 return m_hasSeenAnimationPropertyKeyword;
176 }
177
178 void sawAnimationPropertyKeyword()
179 {
180 m_hasSeenAnimationPropertyKeyword = true;
181 }
182
183 private:
184 bool m_animationPropertyKeywordAllowed;
185 bool m_firstAnimationCommitted;
186 bool m_hasSeenAnimationPropertyKeyword;
187 };
188
189 CSSParser::CSSParser(const CSSParserContext& context, UseCounter* counter)
190 : m_context(context)
191 , m_important(false)
192 , m_id(CSSPropertyInvalid)
193 , m_styleSheet(0)
194 , m_supportsCondition(false)
195 , m_selectorListForParseSelector(0)
196 , m_numParsedPropertiesBeforeMarginBox(INVALID_NUM_PARSED_PROPERTIES)
197 , m_inParseShorthand(0)
198 , m_currentShorthand(CSSPropertyInvalid)
199 , m_implicitShorthand(false)
200 , m_hasFontFaceOnlyValues(false)
201 , m_hadSyntacticallyValidCSSRule(false)
202 , m_logErrors(false)
203 , m_ignoreErrors(false)
204 , m_inFilterRule(false)
205 , m_defaultNamespace(starAtom)
206 , m_observer(0)
207 , m_source(0)
208 , m_ruleHeaderType(CSSRuleSourceData::UNKNOWN_RULE)
209 , m_allowImportRules(true)
210 , m_allowNamespaceDeclarations(true)
211 , m_inViewport(false)
212 , m_useCounter(counter)
213 , m_tokenizer(*this)
214 {
215 #if YYDEBUG > 0
216 cssyydebug = 1;
217 #endif
218 CSSPropertySourceData::init();
219 }
220
221 CSSParser::~CSSParser()
222 {
223 clearProperties();
224
225 deleteAllValues(m_floatingSelectors);
226 deleteAllValues(m_floatingSelectorVectors);
227 deleteAllValues(m_floatingValueLists);
228 deleteAllValues(m_floatingFunctions);
229 }
230
231 void CSSParser::setupParser(const char* prefix, unsigned prefixLength, const Str ing& string, const char* suffix, unsigned suffixLength)
232 {
233 m_tokenizer.setupTokenizer(prefix, prefixLength, string, suffix, suffixLengt h);
234 m_ruleHasHeader = true;
235 }
236
237 void CSSParser::parseSheet(StyleSheetContents* sheet, const String& string, cons t TextPosition& startPosition, CSSParserObserver* observer, bool logErrors)
238 {
239 setStyleSheet(sheet);
240 m_defaultNamespace = starAtom; // Reset the default namespace.
241 TemporaryChange<CSSParserObserver*> scopedObsever(m_observer, observer);
242 m_logErrors = logErrors && sheet->singleOwnerDocument() && !sheet->baseURL() .isEmpty() && sheet->singleOwnerDocument()->frameHost();
243 m_ignoreErrors = false;
244 m_tokenizer.m_lineNumber = 0;
245 m_startPosition = startPosition;
246 m_source = &string;
247 m_tokenizer.m_internal = false;
248 setupParser("", string, "");
249 cssyyparse(this);
250 sheet->shrinkToFit();
251 m_source = 0;
252 m_rule = 0;
253 m_lineEndings.clear();
254 m_ignoreErrors = false;
255 m_logErrors = false;
256 m_tokenizer.m_internal = true;
257 }
258
259 PassRefPtr<StyleRuleBase> CSSParser::parseRule(StyleSheetContents* sheet, const String& string)
260 {
261 setStyleSheet(sheet);
262 m_allowNamespaceDeclarations = false;
263 setupParser("@-internal-rule ", string, "");
264 cssyyparse(this);
265 return m_rule.release();
266 }
267
268 PassRefPtr<StyleKeyframe> CSSParser::parseKeyframeRule(StyleSheetContents* sheet , const String& string)
269 {
270 setStyleSheet(sheet);
271 setupParser("@-internal-keyframe-rule ", string, "");
272 cssyyparse(this);
273 return m_keyframe.release();
274 }
275
276 PassOwnPtr<Vector<double> > CSSParser::parseKeyframeKeyList(const String& string )
277 {
278 setupParser("@-internal-keyframe-key-list ", string, "");
279 cssyyparse(this);
280 ASSERT(m_valueList);
281 return StyleKeyframe::createKeyList(m_valueList.get());
282 }
283
284 bool CSSParser::parseSupportsCondition(const String& string)
285 {
286 m_supportsCondition = false;
287 setupParser("@-internal-supports-condition ", string, "");
288 cssyyparse(this);
289 return m_supportsCondition;
290 }
291
292 static inline bool isColorPropertyID(CSSPropertyID propertyId)
293 {
294 switch (propertyId) {
295 case CSSPropertyColor:
296 case CSSPropertyBackgroundColor:
297 case CSSPropertyBorderBottomColor:
298 case CSSPropertyBorderLeftColor:
299 case CSSPropertyBorderRightColor:
300 case CSSPropertyBorderTopColor:
301 case CSSPropertyOutlineColor:
302 case CSSPropertyTextLineThroughColor:
303 case CSSPropertyTextOverlineColor:
304 case CSSPropertyTextUnderlineColor:
305 case CSSPropertyWebkitBorderAfterColor:
306 case CSSPropertyWebkitBorderBeforeColor:
307 case CSSPropertyWebkitBorderEndColor:
308 case CSSPropertyWebkitBorderStartColor:
309 case CSSPropertyWebkitColumnRuleColor:
310 case CSSPropertyWebkitTextEmphasisColor:
311 case CSSPropertyWebkitTextFillColor:
312 case CSSPropertyWebkitTextStrokeColor:
313 return true;
314 case CSSPropertyTextDecorationColor:
315 return RuntimeEnabledFeatures::css3TextDecorationsEnabled();
316 default:
317 return false;
318 }
319 }
320
321 static bool parseColorValue(MutableStylePropertySet* declaration, CSSPropertyID propertyId, const String& string, bool important, CSSParserMode cssParserMode)
322 {
323 ASSERT(!string.isEmpty());
324 bool quirksMode = isQuirksModeBehavior(cssParserMode);
325 if (!isColorPropertyID(propertyId))
326 return false;
327 CSSParserString cssString;
328 cssString.init(string);
329 CSSValueID valueID = cssValueKeywordID(cssString);
330 bool validPrimitive = false;
331 if (valueID == CSSValueWebkitText) {
332 validPrimitive = true;
333 } else if (valueID == CSSValueCurrentcolor) {
334 validPrimitive = true;
335 } else if ((valueID >= CSSValueAqua && valueID <= CSSValueWindowtext) || val ueID == CSSValueMenu
336 || (quirksMode && valueID >= CSSValueWebkitFocusRingColor && valueID < C SSValueWebkitText)) {
337 validPrimitive = true;
338 }
339
340 if (validPrimitive) {
341 RefPtr<CSSValue> value = cssValuePool().createIdentifierValue(valueID);
342 declaration->addParsedProperty(CSSProperty(propertyId, value.release(), important));
343 return true;
344 }
345 RGBA32 color;
346 if (!CSSParser::fastParseColor(color, string, !quirksMode && string[0] != '# '))
347 return false;
348 RefPtr<CSSValue> value = cssValuePool().createColorValue(color);
349 declaration->addParsedProperty(CSSProperty(propertyId, value.release(), impo rtant));
350 return true;
351 }
352
353 static inline bool isSimpleLengthPropertyID(CSSPropertyID propertyId, bool& acce ptsNegativeNumbers)
354 {
355 switch (propertyId) {
356 case CSSPropertyFontSize:
357 case CSSPropertyHeight:
358 case CSSPropertyWidth:
359 case CSSPropertyMinHeight:
360 case CSSPropertyMinWidth:
361 case CSSPropertyPaddingBottom:
362 case CSSPropertyPaddingLeft:
363 case CSSPropertyPaddingRight:
364 case CSSPropertyPaddingTop:
365 case CSSPropertyWebkitLogicalWidth:
366 case CSSPropertyWebkitLogicalHeight:
367 case CSSPropertyWebkitMinLogicalWidth:
368 case CSSPropertyWebkitMinLogicalHeight:
369 case CSSPropertyWebkitPaddingAfter:
370 case CSSPropertyWebkitPaddingBefore:
371 case CSSPropertyWebkitPaddingEnd:
372 case CSSPropertyWebkitPaddingStart:
373 acceptsNegativeNumbers = false;
374 return true;
375 case CSSPropertyShapeMargin:
376 case CSSPropertyShapePadding:
377 acceptsNegativeNumbers = false;
378 return RuntimeEnabledFeatures::cssShapesEnabled();
379 case CSSPropertyBottom:
380 case CSSPropertyLeft:
381 case CSSPropertyMarginBottom:
382 case CSSPropertyMarginLeft:
383 case CSSPropertyMarginRight:
384 case CSSPropertyMarginTop:
385 case CSSPropertyRight:
386 case CSSPropertyTop:
387 case CSSPropertyWebkitMarginAfter:
388 case CSSPropertyWebkitMarginBefore:
389 case CSSPropertyWebkitMarginEnd:
390 case CSSPropertyWebkitMarginStart:
391 acceptsNegativeNumbers = true;
392 return true;
393 default:
394 return false;
395 }
396 }
397
398 template <typename CharacterType>
399 static inline bool parseSimpleLength(const CharacterType* characters, unsigned l ength, CSSPrimitiveValue::UnitTypes& unit, double& number)
400 {
401 if (length > 2 && (characters[length - 2] | 0x20) == 'p' && (characters[leng th - 1] | 0x20) == 'x') {
402 length -= 2;
403 unit = CSSPrimitiveValue::CSS_PX;
404 } else if (length > 1 && characters[length - 1] == '%') {
405 length -= 1;
406 unit = CSSPrimitiveValue::CSS_PERCENTAGE;
407 }
408
409 // We rely on charactersToDouble for validation as well. The function
410 // will set "ok" to "false" if the entire passed-in character range does
411 // not represent a double.
412 bool ok;
413 number = charactersToDouble(characters, length, &ok);
414 return ok;
415 }
416
417 static bool parseSimpleLengthValue(MutableStylePropertySet* declaration, CSSProp ertyID propertyId, const String& string, bool important, CSSParserMode cssParser Mode)
418 {
419 ASSERT(!string.isEmpty());
420 bool acceptsNegativeNumbers;
421
422 // In @viewport, width and height are shorthands, not simple length values.
423 if (isCSSViewportParsingEnabledForMode(cssParserMode) || !isSimpleLengthProp ertyID(propertyId, acceptsNegativeNumbers))
424 return false;
425
426 unsigned length = string.length();
427 double number;
428 CSSPrimitiveValue::UnitTypes unit = CSSPrimitiveValue::CSS_NUMBER;
429
430 if (string.is8Bit()) {
431 if (!parseSimpleLength(string.characters8(), length, unit, number))
432 return false;
433 } else {
434 if (!parseSimpleLength(string.characters16(), length, unit, number))
435 return false;
436 }
437
438 if (unit == CSSPrimitiveValue::CSS_NUMBER) {
439 bool quirksMode = isQuirksModeBehavior(cssParserMode);
440 if (number && !quirksMode)
441 return false;
442 unit = CSSPrimitiveValue::CSS_PX;
443 }
444 if (number < 0 && !acceptsNegativeNumbers)
445 return false;
446
447 RefPtr<CSSValue> value = cssValuePool().createValue(number, unit);
448 declaration->addParsedProperty(CSSProperty(propertyId, value.release(), impo rtant));
449 return true;
450 }
451
452 static inline bool isValidKeywordPropertyAndValue(CSSPropertyID propertyId, int valueID, const CSSParserContext& parserContext)
453 {
454 if (!valueID)
455 return false;
456
457 switch (propertyId) {
458 case CSSPropertyBorderCollapse: // collapse | separate | inherit
459 if (valueID == CSSValueCollapse || valueID == CSSValueSeparate)
460 return true;
461 break;
462 case CSSPropertyBorderTopStyle: // <border-style> | inherit
463 case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | da shed |
464 case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inse t | outset
465 case CSSPropertyBorderLeftStyle:
466 case CSSPropertyWebkitBorderAfterStyle:
467 case CSSPropertyWebkitBorderBeforeStyle:
468 case CSSPropertyWebkitBorderEndStyle:
469 case CSSPropertyWebkitBorderStartStyle:
470 case CSSPropertyWebkitColumnRuleStyle:
471 if (valueID >= CSSValueNone && valueID <= CSSValueDouble)
472 return true;
473 break;
474 case CSSPropertyBoxSizing:
475 if (valueID == CSSValueBorderBox || valueID == CSSValueContentBox)
476 return true;
477 break;
478 case CSSPropertyCaptionSide: // top | bottom | left | right | inherit
479 if (valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CS SValueTop || valueID == CSSValueBottom)
480 return true;
481 break;
482 case CSSPropertyClear: // none | left | right | both | inherit
483 if (valueID == CSSValueNone || valueID == CSSValueLeft || valueID == CSS ValueRight || valueID == CSSValueBoth)
484 return true;
485 break;
486 case CSSPropertyDirection: // ltr | rtl | inherit
487 if (valueID == CSSValueLtr || valueID == CSSValueRtl)
488 return true;
489 break;
490 case CSSPropertyDisplay:
491 // inline | block | list-item | inline-block | table |
492 // inline-table | table-row-group | table-header-group | table-footer-gr oup | table-row |
493 // table-column-group | table-column | table-cell | table-caption | -web kit-box | -webkit-inline-box | none | inherit
494 // flex | inline-flex | -webkit-flex | -webkit-inline-flex | grid | inli ne-grid | lazy-block
495 if ((valueID >= CSSValueInline && valueID <= CSSValueInlineFlex) || valu eID == CSSValueWebkitFlex || valueID == CSSValueWebkitInlineFlex || valueID == C SSValueNone)
496 return true;
497 if (valueID == CSSValueGrid || valueID == CSSValueInlineGrid)
498 return RuntimeEnabledFeatures::cssGridLayoutEnabled();
499 break;
500
501 case CSSPropertyEmptyCells: // show | hide | inherit
502 if (valueID == CSSValueShow || valueID == CSSValueHide)
503 return true;
504 break;
505 case CSSPropertyFloat: // left | right | none | center (for buggy CSS, maps to none)
506 if (valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CS SValueNone || valueID == CSSValueCenter)
507 return true;
508 break;
509 case CSSPropertyFontStyle: // normal | italic | oblique | inherit
510 if (valueID == CSSValueNormal || valueID == CSSValueItalic || valueID == CSSValueOblique)
511 return true;
512 break;
513 case CSSPropertyImageRendering: // auto | optimizeContrast
514 if (valueID == CSSValueAuto || valueID == CSSValueWebkitOptimizeContrast )
515 return true;
516 break;
517 case CSSPropertyIsolation: // auto | isolate
518 if (valueID == CSSValueAuto || valueID == CSSValueIsolate)
519 return RuntimeEnabledFeatures::cssCompositingEnabled();
520 break;
521 case CSSPropertyListStylePosition: // inside | outside | inherit
522 if (valueID == CSSValueInside || valueID == CSSValueOutside)
523 return true;
524 break;
525 case CSSPropertyListStyleType:
526 // See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in
527 // for the list of supported list-style-types.
528 if ((valueID >= CSSValueDisc && valueID <= CSSValueKatakanaIroha) || val ueID == CSSValueNone)
529 return true;
530 break;
531 case CSSPropertyObjectFit:
532 if (RuntimeEnabledFeatures::objectFitPositionEnabled()) {
533 if (valueID == CSSValueFill || valueID == CSSValueContain || valueID == CSSValueCover || valueID == CSSValueNone || valueID == CSSValueScaleDown)
534 return true;
535 }
536 break;
537 case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto | inh erit
538 if (valueID == CSSValueAuto || valueID == CSSValueNone || (valueID >= CS SValueInset && valueID <= CSSValueDouble))
539 return true;
540 break;
541 case CSSPropertyOverflowWrap: // normal | break-word
542 case CSSPropertyWordWrap:
543 if (valueID == CSSValueNormal || valueID == CSSValueBreakWord)
544 return true;
545 break;
546 case CSSPropertyOverflowX: // visible | hidden | scroll | auto | overlay | i nherit
547 if (valueID == CSSValueVisible || valueID == CSSValueHidden || valueID = = CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay)
548 return true;
549 break;
550 case CSSPropertyOverflowY: // visible | hidden | scroll | auto | overlay | i nherit | -webkit-paged-x | -webkit-paged-y
551 if (valueID == CSSValueVisible || valueID == CSSValueHidden || valueID = = CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay || val ueID == CSSValueWebkitPagedX || valueID == CSSValueWebkitPagedY)
552 return true;
553 break;
554 case CSSPropertyPageBreakAfter: // auto | always | avoid | left | right | in herit
555 case CSSPropertyPageBreakBefore:
556 case CSSPropertyWebkitColumnBreakAfter:
557 case CSSPropertyWebkitColumnBreakBefore:
558 if (valueID == CSSValueAuto || valueID == CSSValueAlways || valueID == C SSValueAvoid || valueID == CSSValueLeft || valueID == CSSValueRight)
559 return true;
560 break;
561 case CSSPropertyPageBreakInside: // avoid | auto | inherit
562 case CSSPropertyWebkitColumnBreakInside:
563 if (valueID == CSSValueAuto || valueID == CSSValueAvoid)
564 return true;
565 break;
566 case CSSPropertyPointerEvents:
567 // none | visiblePainted | visibleFill | visibleStroke | visible |
568 // painted | fill | stroke | auto | all | bounding-box | inherit
569 if (valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAll || valueID == CSSValueAuto || (valueID >= CSSValueVisiblepainted && valueID <= CSSValueBoundingBox))
570 return true;
571 break;
572 case CSSPropertyPosition: // static | relative | absolute | fixed | sticky | inherit
573 if (valueID == CSSValueStatic || valueID == CSSValueRelative || valueID == CSSValueAbsolute || valueID == CSSValueFixed
574 || (RuntimeEnabledFeatures::cssStickyPositionEnabled() && valueID == CSSValueSticky))
575 return true;
576 break;
577 case CSSPropertyResize: // none | both | horizontal | vertical | auto
578 if (valueID == CSSValueNone || valueID == CSSValueBoth || valueID == CSS ValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueAuto)
579 return true;
580 break;
581 case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punct uation | no-punctuation | inherit
582 if (valueID == CSSValueNone || valueID == CSSValueNormal || valueID == C SSValueSpellOut || valueID == CSSValueDigits || valueID == CSSValueLiteralPunctu ation || valueID == CSSValueNoPunctuation)
583 return true;
584 break;
585 case CSSPropertyTableLayout: // auto | fixed | inherit
586 if (valueID == CSSValueAuto || valueID == CSSValueFixed)
587 return true;
588 break;
589 case CSSPropertyTextAlignLast:
590 // auto | start | end | left | right | center | justify
591 if (RuntimeEnabledFeatures::css3TextEnabled()
592 && ((valueID >= CSSValueLeft && valueID <= CSSValueJustify) || value ID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueAuto))
593 return true;
594 break;
595 case CSSPropertyTextJustify:
596 // auto | none | inter-word | distribute
597 if (RuntimeEnabledFeatures::css3TextEnabled()
598 && (valueID == CSSValueInterWord || valueID == CSSValueDistribute || valueID == CSSValueAuto || valueID == CSSValueNone))
599 return true;
600 break;
601 case CSSPropertyTextLineThroughMode:
602 case CSSPropertyTextOverlineMode:
603 case CSSPropertyTextUnderlineMode:
604 if (valueID == CSSValueContinuous || valueID == CSSValueSkipWhiteSpace)
605 return true;
606 break;
607 case CSSPropertyTextLineThroughStyle:
608 case CSSPropertyTextOverlineStyle:
609 case CSSPropertyTextUnderlineStyle:
610 if (valueID == CSSValueNone || valueID == CSSValueSolid || valueID == CS SValueDouble || valueID == CSSValueDashed || valueID == CSSValueDotDash || value ID == CSSValueDotDotDash || valueID == CSSValueWave)
611 return true;
612 break;
613 case CSSPropertyTextOverflow: // clip | ellipsis
614 if (valueID == CSSValueClip || valueID == CSSValueEllipsis)
615 return true;
616 break;
617 case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision
618 if (valueID == CSSValueAuto || valueID == CSSValueOptimizespeed || value ID == CSSValueOptimizelegibility || valueID == CSSValueGeometricprecision)
619 return true;
620 break;
621 case CSSPropertyTextTransform: // capitalize | uppercase | lowercase | none | inherit
622 if ((valueID >= CSSValueCapitalize && valueID <= CSSValueLowercase) || v alueID == CSSValueNone)
623 return true;
624 break;
625 case CSSPropertyTouchActionDelay: // none | script
626 if (RuntimeEnabledFeatures::cssTouchActionEnabled() && (valueID == CSSVa lueScript || valueID == CSSValueNone))
627 return true;
628 break;
629 case CSSPropertyVisibility: // visible | hidden | collapse | inherit
630 if (valueID == CSSValueVisible || valueID == CSSValueHidden || valueID = = CSSValueCollapse)
631 return true;
632 break;
633 case CSSPropertyWebkitAppearance:
634 if ((valueID >= CSSValueCheckbox && valueID <= CSSValueTextarea) || valu eID == CSSValueNone)
635 return true;
636 break;
637 case CSSPropertyWebkitBackfaceVisibility:
638 if (valueID == CSSValueVisible || valueID == CSSValueHidden)
639 return true;
640 break;
641 case CSSPropertyMixBlendMode:
642 if (RuntimeEnabledFeatures::cssCompositingEnabled() && (valueID == CSSVa lueNormal || valueID == CSSValueMultiply || valueID == CSSValueScreen
643 || valueID == CSSValueOverlay || valueID == CSSValueDarken || valueI D == CSSValueLighten || valueID == CSSValueColorDodge
644 || valueID == CSSValueColorBurn || valueID == CSSValueHardLight || v alueID == CSSValueSoftLight || valueID == CSSValueDifference
645 || valueID == CSSValueExclusion || valueID == CSSValueHue || valueID == CSSValueSaturation || valueID == CSSValueColor
646 || valueID == CSSValueLuminosity))
647 return true;
648 break;
649 case CSSPropertyWebkitBorderFit:
650 if (valueID == CSSValueBorder || valueID == CSSValueLines)
651 return true;
652 break;
653 case CSSPropertyWebkitBoxAlign:
654 if (valueID == CSSValueStretch || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline)
655 return true;
656 break;
657 case CSSPropertyWebkitBoxDecorationBreak:
658 if (valueID == CSSValueClone || valueID == CSSValueSlice)
659 return true;
660 break;
661 case CSSPropertyWebkitBoxDirection:
662 if (valueID == CSSValueNormal || valueID == CSSValueReverse)
663 return true;
664 break;
665 case CSSPropertyWebkitBoxLines:
666 if (valueID == CSSValueSingle || valueID == CSSValueMultiple)
667 return true;
668 break;
669 case CSSPropertyWebkitBoxOrient:
670 if (valueID == CSSValueHorizontal || valueID == CSSValueVertical || valu eID == CSSValueInlineAxis || valueID == CSSValueBlockAxis)
671 return true;
672 break;
673 case CSSPropertyWebkitBoxPack:
674 if (valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSS ValueCenter || valueID == CSSValueJustify)
675 return true;
676 break;
677 case CSSPropertyInternalCallback:
678 // This property is only injected programmatically, not parsed from styl esheets.
679 return false;
680 case CSSPropertyColumnFill:
681 if (RuntimeEnabledFeatures::regionBasedColumnsEnabled()) {
682 if (valueID == CSSValueAuto || valueID == CSSValueBalance)
683 return true;
684 }
685 break;
686 case CSSPropertyAlignContent:
687 if (valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || value ID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSp aceAround || valueID == CSSValueStretch)
688 return true;
689 break;
690 case CSSPropertyAlignItems:
691 if (valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueI D == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch )
692 return true;
693 break;
694 case CSSPropertyAlignSelf:
695 if (valueID == CSSValueAuto || valueID == CSSValueFlexStart || valueID = = CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch)
696 return true;
697 break;
698 case CSSPropertyFlexDirection:
699 if (valueID == CSSValueRow || valueID == CSSValueRowReverse || valueID = = CSSValueColumn || valueID == CSSValueColumnReverse)
700 return true;
701 break;
702 case CSSPropertyFlexWrap:
703 if (valueID == CSSValueNowrap || valueID == CSSValueWrap || valueID == C SSValueWrapReverse)
704 return true;
705 break;
706 case CSSPropertyJustifyContent:
707 if (valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueI D == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpa ceAround)
708 return true;
709 break;
710 case CSSPropertyFontKerning:
711 if (valueID == CSSValueAuto || valueID == CSSValueNormal || valueID == C SSValueNone)
712 return true;
713 break;
714 case CSSPropertyWebkitFontSmoothing:
715 if (valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSS ValueAntialiased || valueID == CSSValueSubpixelAntialiased)
716 return true;
717 break;
718 case CSSPropertyGridAutoFlow:
719 if (valueID == CSSValueNone || valueID == CSSValueRow || valueID == CSSV alueColumn)
720 return RuntimeEnabledFeatures::cssGridLayoutEnabled();
721 break;
722 case CSSPropertyWebkitLineAlign:
723 if (valueID == CSSValueNone || valueID == CSSValueEdges)
724 return true;
725 break;
726 case CSSPropertyWebkitLineBreak: // auto | loose | normal | strict | after-w hite-space
727 if (valueID == CSSValueAuto || valueID == CSSValueLoose || valueID == CS SValueNormal || valueID == CSSValueStrict || valueID == CSSValueAfterWhiteSpace)
728 return true;
729 break;
730 case CSSPropertyWebkitLineSnap:
731 if (valueID == CSSValueNone || valueID == CSSValueBaseline || valueID == CSSValueContain)
732 return true;
733 break;
734 case CSSPropertyWebkitMarginAfterCollapse:
735 case CSSPropertyWebkitMarginBeforeCollapse:
736 case CSSPropertyWebkitMarginBottomCollapse:
737 case CSSPropertyWebkitMarginTopCollapse:
738 if (valueID == CSSValueCollapse || valueID == CSSValueSeparate || valueI D == CSSValueDiscard)
739 return true;
740 break;
741 case CSSPropertyInternalMarqueeDirection:
742 if (valueID == CSSValueForwards || valueID == CSSValueBackwards || value ID == CSSValueAhead || valueID == CSSValueReverse || valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueDown
743 || valueID == CSSValueUp || valueID == CSSValueAuto)
744 return true;
745 break;
746 case CSSPropertyInternalMarqueeStyle:
747 if (valueID == CSSValueNone || valueID == CSSValueSlide || valueID == CS SValueScroll || valueID == CSSValueAlternate)
748 return true;
749 break;
750 case CSSPropertyWebkitPrintColorAdjust:
751 if (valueID == CSSValueExact || valueID == CSSValueEconomy)
752 return true;
753 break;
754 case CSSPropertyWebkitRegionBreakAfter:
755 case CSSPropertyWebkitRegionBreakBefore:
756 if (RuntimeEnabledFeatures::cssRegionsEnabled() && (valueID == CSSValueA uto || valueID == CSSValueAlways || valueID == CSSValueAvoid || valueID == CSSVa lueLeft || valueID == CSSValueRight))
757 return true;
758 break;
759 case CSSPropertyWebkitRegionBreakInside:
760 if (RuntimeEnabledFeatures::cssRegionsEnabled() && (valueID == CSSValueA uto || valueID == CSSValueAvoid))
761 return true;
762 break;
763 case CSSPropertyWebkitRegionFragment:
764 if (RuntimeEnabledFeatures::cssRegionsEnabled() && (valueID == CSSValueA uto || valueID == CSSValueBreak))
765 return true;
766 break;
767 case CSSPropertyWebkitRtlOrdering:
768 if (valueID == CSSValueLogical || valueID == CSSValueVisual)
769 return true;
770 break;
771
772 case CSSPropertyWebkitRubyPosition:
773 if (valueID == CSSValueBefore || valueID == CSSValueAfter)
774 return true;
775 break;
776
777 case CSSPropertyWebkitTextCombine:
778 if (valueID == CSSValueNone || valueID == CSSValueHorizontal)
779 return true;
780 break;
781 case CSSPropertyWebkitTextEmphasisPosition:
782 if (valueID == CSSValueOver || valueID == CSSValueUnder)
783 return true;
784 break;
785 case CSSPropertyWebkitTextSecurity:
786 // disc | circle | square | none | inherit
787 if (valueID == CSSValueDisc || valueID == CSSValueCircle || valueID == C SSValueSquare || valueID == CSSValueNone)
788 return true;
789 break;
790 case CSSPropertyWebkitTransformStyle:
791 if (valueID == CSSValueFlat || valueID == CSSValuePreserve3d)
792 return true;
793 break;
794 case CSSPropertyWebkitUserDrag: // auto | none | element
795 if (valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSS ValueElement)
796 return true;
797 break;
798 case CSSPropertyWebkitUserModify: // read-only | read-write
799 if (valueID == CSSValueReadOnly || valueID == CSSValueReadWrite || value ID == CSSValueReadWritePlaintextOnly)
800 return true;
801 break;
802 case CSSPropertyWebkitUserSelect: // auto | none | text | all
803 if (valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSS ValueText || valueID == CSSValueAll)
804 return true;
805 break;
806 case CSSPropertyWebkitWrapFlow:
807 if (!RuntimeEnabledFeatures::cssExclusionsEnabled())
808 return false;
809 if (valueID == CSSValueAuto || valueID == CSSValueBoth || valueID == CSS ValueStart || valueID == CSSValueEnd || valueID == CSSValueMaximum || valueID == CSSValueClear)
810 return true;
811 break;
812 case CSSPropertyWebkitWrapThrough:
813 if (!RuntimeEnabledFeatures::cssExclusionsEnabled())
814 return false;
815 if (valueID == CSSValueWrap || valueID == CSSValueNone)
816 return true;
817 break;
818 case CSSPropertyWebkitWritingMode:
819 if (valueID >= CSSValueHorizontalTb && valueID <= CSSValueHorizontalBt)
820 return true;
821 break;
822 case CSSPropertyWhiteSpace: // normal | pre | nowrap | inherit
823 if (valueID == CSSValueNormal || valueID == CSSValuePre || valueID == CS SValuePreWrap || valueID == CSSValuePreLine || valueID == CSSValueNowrap)
824 return true;
825 break;
826 case CSSPropertyWordBreak: // normal | break-all | break-word (this is a cus tom extension)
827 if (valueID == CSSValueNormal || valueID == CSSValueBreakAll || valueID == CSSValueBreakWord)
828 return true;
829 break;
830 default:
831 ASSERT_NOT_REACHED();
832 return false;
833 }
834 return false;
835 }
836
837 static inline bool isKeywordPropertyID(CSSPropertyID propertyId)
838 {
839 switch (propertyId) {
840 case CSSPropertyMixBlendMode:
841 case CSSPropertyIsolation:
842 case CSSPropertyBorderBottomStyle:
843 case CSSPropertyBorderCollapse:
844 case CSSPropertyBorderLeftStyle:
845 case CSSPropertyBorderRightStyle:
846 case CSSPropertyBorderTopStyle:
847 case CSSPropertyBoxSizing:
848 case CSSPropertyCaptionSide:
849 case CSSPropertyClear:
850 case CSSPropertyDirection:
851 case CSSPropertyDisplay:
852 case CSSPropertyEmptyCells:
853 case CSSPropertyFloat:
854 case CSSPropertyFontStyle:
855 case CSSPropertyImageRendering:
856 case CSSPropertyListStylePosition:
857 case CSSPropertyListStyleType:
858 case CSSPropertyObjectFit:
859 case CSSPropertyOutlineStyle:
860 case CSSPropertyOverflowWrap:
861 case CSSPropertyOverflowX:
862 case CSSPropertyOverflowY:
863 case CSSPropertyPageBreakAfter:
864 case CSSPropertyPageBreakBefore:
865 case CSSPropertyPageBreakInside:
866 case CSSPropertyPointerEvents:
867 case CSSPropertyPosition:
868 case CSSPropertyResize:
869 case CSSPropertySpeak:
870 case CSSPropertyTableLayout:
871 case CSSPropertyTextAlignLast:
872 case CSSPropertyTextJustify:
873 case CSSPropertyTextLineThroughMode:
874 case CSSPropertyTextLineThroughStyle:
875 case CSSPropertyTextOverflow:
876 case CSSPropertyTextOverlineMode:
877 case CSSPropertyTextOverlineStyle:
878 case CSSPropertyTextRendering:
879 case CSSPropertyTextTransform:
880 case CSSPropertyTextUnderlineMode:
881 case CSSPropertyTextUnderlineStyle:
882 case CSSPropertyTouchActionDelay:
883 case CSSPropertyVisibility:
884 case CSSPropertyWebkitAppearance:
885 case CSSPropertyWebkitBackfaceVisibility:
886 case CSSPropertyWebkitBorderAfterStyle:
887 case CSSPropertyWebkitBorderBeforeStyle:
888 case CSSPropertyWebkitBorderEndStyle:
889 case CSSPropertyWebkitBorderFit:
890 case CSSPropertyWebkitBorderStartStyle:
891 case CSSPropertyWebkitBoxAlign:
892 case CSSPropertyWebkitBoxDecorationBreak:
893 case CSSPropertyWebkitBoxDirection:
894 case CSSPropertyWebkitBoxLines:
895 case CSSPropertyWebkitBoxOrient:
896 case CSSPropertyWebkitBoxPack:
897 case CSSPropertyInternalCallback:
898 case CSSPropertyWebkitColumnBreakAfter:
899 case CSSPropertyWebkitColumnBreakBefore:
900 case CSSPropertyWebkitColumnBreakInside:
901 case CSSPropertyColumnFill:
902 case CSSPropertyWebkitColumnRuleStyle:
903 case CSSPropertyAlignContent:
904 case CSSPropertyAlignItems:
905 case CSSPropertyAlignSelf:
906 case CSSPropertyFlexDirection:
907 case CSSPropertyFlexWrap:
908 case CSSPropertyJustifyContent:
909 case CSSPropertyFontKerning:
910 case CSSPropertyWebkitFontSmoothing:
911 case CSSPropertyGridAutoFlow:
912 case CSSPropertyWebkitLineAlign:
913 case CSSPropertyWebkitLineBreak:
914 case CSSPropertyWebkitLineSnap:
915 case CSSPropertyWebkitMarginAfterCollapse:
916 case CSSPropertyWebkitMarginBeforeCollapse:
917 case CSSPropertyWebkitMarginBottomCollapse:
918 case CSSPropertyWebkitMarginTopCollapse:
919 case CSSPropertyInternalMarqueeDirection:
920 case CSSPropertyInternalMarqueeStyle:
921 case CSSPropertyWebkitPrintColorAdjust:
922 case CSSPropertyWebkitRegionBreakAfter:
923 case CSSPropertyWebkitRegionBreakBefore:
924 case CSSPropertyWebkitRegionBreakInside:
925 case CSSPropertyWebkitRegionFragment:
926 case CSSPropertyWebkitRtlOrdering:
927 case CSSPropertyWebkitRubyPosition:
928 case CSSPropertyWebkitTextCombine:
929 case CSSPropertyWebkitTextEmphasisPosition:
930 case CSSPropertyWebkitTextSecurity:
931 case CSSPropertyWebkitTransformStyle:
932 case CSSPropertyWebkitUserDrag:
933 case CSSPropertyWebkitUserModify:
934 case CSSPropertyWebkitUserSelect:
935 case CSSPropertyWebkitWrapFlow:
936 case CSSPropertyWebkitWrapThrough:
937 case CSSPropertyWebkitWritingMode:
938 case CSSPropertyWhiteSpace:
939 case CSSPropertyWordBreak:
940 case CSSPropertyWordWrap:
941 return true;
942 default:
943 return false;
944 }
945 }
946
947 static bool parseKeywordValue(MutableStylePropertySet* declaration, CSSPropertyI D propertyId, const String& string, bool important, const CSSParserContext& pars erContext)
948 {
949 ASSERT(!string.isEmpty());
950
951 if (!isKeywordPropertyID(propertyId)) {
952 // All properties accept the values of "initial" and "inherit".
953 String lowerCaseString = string.lower();
954 if (lowerCaseString != "initial" && lowerCaseString != "inherit")
955 return false;
956
957 // Parse initial/inherit shorthands using the CSSParser.
958 if (shorthandForProperty(propertyId).length())
959 return false;
960 }
961
962 CSSParserString cssString;
963 cssString.init(string);
964 CSSValueID valueID = cssValueKeywordID(cssString);
965
966 if (!valueID)
967 return false;
968
969 RefPtr<CSSValue> value;
970 if (valueID == CSSValueInherit)
971 value = cssValuePool().createInheritedValue();
972 else if (valueID == CSSValueInitial)
973 value = cssValuePool().createExplicitInitialValue();
974 else if (isValidKeywordPropertyAndValue(propertyId, valueID, parserContext))
975 value = cssValuePool().createIdentifierValue(valueID);
976 else
977 return false;
978
979 declaration->addParsedProperty(CSSProperty(propertyId, value.release(), impo rtant));
980 return true;
981 }
982
983 template <typename CharType>
984 static bool parseTransformTranslateArguments(CharType*& pos, CharType* end, unsi gned expectedCount, CSSTransformValue* transformValue)
985 {
986 while (expectedCount) {
987 size_t delimiter = WTF::find(pos, end - pos, expectedCount == 1 ? ')' : ',');
988 if (delimiter == kNotFound)
989 return false;
990 unsigned argumentLength = static_cast<unsigned>(delimiter);
991 CSSPrimitiveValue::UnitTypes unit = CSSPrimitiveValue::CSS_NUMBER;
992 double number;
993 if (!parseSimpleLength(pos, argumentLength, unit, number))
994 return false;
995 if (unit != CSSPrimitiveValue::CSS_PX && (number || unit != CSSPrimitive Value::CSS_NUMBER))
996 return false;
997 transformValue->append(cssValuePool().createValue(number, CSSPrimitiveVa lue::CSS_PX));
998 pos += argumentLength + 1;
999 --expectedCount;
1000 }
1001 return true;
1002 }
1003
1004 template <typename CharType>
1005 static PassRefPtr<CSSTransformValue> parseTranslateTransformValue(CharType*& pos , CharType* end)
1006 {
1007 static const int shortestValidTransformStringLength = 12;
1008
1009 if (end - pos < shortestValidTransformStringLength)
1010 return 0;
1011
1012 if ((pos[0] != 't' && pos[0] != 'T')
1013 || (pos[1] != 'r' && pos[1] != 'R')
1014 || (pos[2] != 'a' && pos[2] != 'A')
1015 || (pos[3] != 'n' && pos[3] != 'N')
1016 || (pos[4] != 's' && pos[4] != 'S')
1017 || (pos[5] != 'l' && pos[5] != 'L')
1018 || (pos[6] != 'a' && pos[6] != 'A')
1019 || (pos[7] != 't' && pos[7] != 'T')
1020 || (pos[8] != 'e' && pos[8] != 'E'))
1021 return 0;
1022
1023 CSSTransformValue::TransformOperationType transformType;
1024 unsigned expectedArgumentCount = 1;
1025 unsigned argumentStart = 11;
1026 if ((pos[9] == 'x' || pos[9] == 'X') && pos[10] == '(') {
1027 transformType = CSSTransformValue::TranslateXTransformOperation;
1028 } else if ((pos[9] == 'y' || pos[9] == 'Y') && pos[10] == '(') {
1029 transformType = CSSTransformValue::TranslateYTransformOperation;
1030 } else if ((pos[9] == 'z' || pos[9] == 'Z') && pos[10] == '(') {
1031 transformType = CSSTransformValue::TranslateZTransformOperation;
1032 } else if (pos[9] == '(') {
1033 transformType = CSSTransformValue::TranslateTransformOperation;
1034 expectedArgumentCount = 2;
1035 argumentStart = 10;
1036 } else if (pos[9] == '3' && (pos[10] == 'd' || pos[10] == 'D') && pos[11] == '(') {
1037 transformType = CSSTransformValue::Translate3DTransformOperation;
1038 expectedArgumentCount = 3;
1039 argumentStart = 12;
1040 } else {
1041 return 0;
1042 }
1043 pos += argumentStart;
1044
1045 RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(transfo rmType);
1046 if (!parseTransformTranslateArguments(pos, end, expectedArgumentCount, trans formValue.get()))
1047 return 0;
1048 return transformValue.release();
1049 }
1050
1051 template <typename CharType>
1052 static PassRefPtr<CSSValueList> parseTranslateTransformList(CharType*& pos, Char Type* end)
1053 {
1054 RefPtr<CSSValueList> transformList;
1055 while (pos < end) {
1056 while (isCSSSpace(*pos) && pos < end)
1057 ++pos;
1058 RefPtr<CSSTransformValue> transformValue = parseTranslateTransformValue( pos, end);
1059 if (!transformValue)
1060 return 0;
1061 if (!transformList)
1062 transformList = CSSValueList::createSpaceSeparated();
1063 transformList->append(transformValue.release());
1064 if (pos < end) {
1065 if (isCSSSpace(*pos))
1066 return 0;
1067 }
1068 }
1069 return transformList.release();
1070 }
1071
1072 static bool parseTranslateTransform(MutableStylePropertySet* properties, CSSProp ertyID propertyID, const String& string, bool important)
1073 {
1074 if (propertyID != CSSPropertyWebkitTransform)
1075 return false;
1076 if (string.isEmpty())
1077 return false;
1078 RefPtr<CSSValueList> transformList;
1079 if (string.is8Bit()) {
1080 const LChar* pos = string.characters8();
1081 const LChar* end = pos + string.length();
1082 transformList = parseTranslateTransformList(pos, end);
1083 if (!transformList)
1084 return false;
1085 } else {
1086 const UChar* pos = string.characters16();
1087 const UChar* end = pos + string.length();
1088 transformList = parseTranslateTransformList(pos, end);
1089 if (!transformList)
1090 return false;
1091 }
1092 properties->addParsedProperty(CSSProperty(CSSPropertyWebkitTransform, transf ormList.release(), important));
1093 return true;
1094 }
1095
1096 PassRefPtr<CSSValueList> CSSParser::parseFontFaceValue(const AtomicString& strin g)
1097 {
1098 if (string.isEmpty())
1099 return 0;
1100 RefPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create ();
1101 if (!parseValue(dummyStyle.get(), CSSPropertyFontFamily, string, false, HTML QuirksMode, 0))
1102 return 0;
1103
1104 RefPtr<CSSValue> fontFamily = dummyStyle->getPropertyCSSValue(CSSPropertyFon tFamily);
1105 if (!fontFamily->isValueList())
1106 return 0;
1107
1108 return toCSSValueList(dummyStyle->getPropertyCSSValue(CSSPropertyFontFamily) .get());
1109 }
1110
1111 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID p ropertyID, const String& string, bool important, const Document& document)
1112 {
1113 ASSERT(!string.isEmpty());
1114
1115 CSSParserContext context(document);
1116
1117 if (parseSimpleLengthValue(declaration, propertyID, string, important, conte xt.mode()))
1118 return true;
1119 if (parseColorValue(declaration, propertyID, string, important, context.mode ()))
1120 return true;
1121 if (parseKeywordValue(declaration, propertyID, string, important, context))
1122 return true;
1123
1124 CSSParser parser(context, UseCounter::getFrom(&document));
1125 return parser.parseValue(declaration, propertyID, string, important, static_ cast<StyleSheetContents*>(0));
1126 }
1127
1128 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID p ropertyID, const String& string, bool important, CSSParserMode cssParserMode, St yleSheetContents* contextStyleSheet)
1129 {
1130 ASSERT(!string.isEmpty());
1131 if (parseSimpleLengthValue(declaration, propertyID, string, important, cssPa rserMode))
1132 return true;
1133 if (parseColorValue(declaration, propertyID, string, important, cssParserMod e))
1134 return true;
1135
1136 CSSParserContext context(cssParserMode);
1137 if (contextStyleSheet) {
1138 context = contextStyleSheet->parserContext();
1139 context.setMode(cssParserMode);
1140 }
1141
1142 if (parseKeywordValue(declaration, propertyID, string, important, context))
1143 return true;
1144 if (parseTranslateTransform(declaration, propertyID, string, important))
1145 return true;
1146
1147 CSSParser parser(context);
1148 return parser.parseValue(declaration, propertyID, string, important, context StyleSheet);
1149 }
1150
1151 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID p ropertyID, const String& string, bool important, StyleSheetContents* contextStyl eSheet)
1152 {
1153 // FIXME: Check RuntimeCSSEnabled::isPropertyEnabled or isValueEnabledForPro perty.
1154
1155 if (m_useCounter)
1156 m_useCounter->count(m_context, propertyID);
1157
1158 setStyleSheet(contextStyleSheet);
1159
1160 setupParser("@-internal-value ", string, "");
1161
1162 m_id = propertyID;
1163 m_important = important;
1164
1165 {
1166 StyleDeclarationScope scope(this, declaration);
1167 cssyyparse(this);
1168 }
1169
1170 m_rule = 0;
1171 m_id = CSSPropertyInvalid;
1172
1173 bool ok = false;
1174 if (m_hasFontFaceOnlyValues)
1175 deleteFontFaceOnlyValues();
1176 if (!m_parsedProperties.isEmpty()) {
1177 ok = true;
1178 declaration->addParsedProperties(m_parsedProperties);
1179 clearProperties();
1180 }
1181
1182 return ok;
1183 }
1184
1185 // The color will only be changed when string contains a valid CSS color, so cal lers
1186 // can set it to a default color and ignore the boolean result.
1187 bool CSSParser::parseColor(RGBA32& color, const String& string, bool strict)
1188 {
1189 // First try creating a color specified by name, rgba(), rgb() or "#" syntax .
1190 if (fastParseColor(color, string, strict))
1191 return true;
1192
1193 CSSParser parser(HTMLStandardMode);
1194
1195 // In case the fast-path parser didn't understand the color, try the full pa rser.
1196 if (!parser.parseColor(string))
1197 return false;
1198
1199 CSSValue* value = parser.m_parsedProperties.first().value();
1200 if (!value->isPrimitiveValue())
1201 return false;
1202
1203 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
1204 if (!primitiveValue->isRGBColor())
1205 return false;
1206
1207 color = primitiveValue->getRGBA32Value();
1208 return true;
1209 }
1210
1211 bool CSSParser::parseColor(const String& string)
1212 {
1213 setupParser("@-internal-decls color:", string, "");
1214 cssyyparse(this);
1215 m_rule = 0;
1216
1217 return !m_parsedProperties.isEmpty() && m_parsedProperties.first().id() == C SSPropertyColor;
1218 }
1219
1220 bool CSSParser::parseSystemColor(RGBA32& color, const String& string, Document* document)
1221 {
1222 if (!document)
1223 return false;
1224
1225 CSSParserString cssColor;
1226 cssColor.init(string);
1227 CSSValueID id = cssValueKeywordID(cssColor);
1228 if (id <= 0)
1229 return false;
1230
1231 color = RenderTheme::theme().systemColor(id).rgb();
1232 return true;
1233 }
1234
1235 void CSSParser::parseSelector(const String& string, CSSSelectorList& selectorLis t)
1236 {
1237 m_selectorListForParseSelector = &selectorList;
1238
1239 setupParser("@-internal-selector ", string, "");
1240
1241 cssyyparse(this);
1242
1243 m_selectorListForParseSelector = 0;
1244 }
1245
1246 PassRefPtr<ImmutableStylePropertySet> CSSParser::parseInlineStyleDeclaration(con st String& string, Element* element)
1247 {
1248 Document& document = element->document();
1249 CSSParserContext context = document.elementSheet()->contents()->parserContex t();
1250 context.setMode((element->isHTMLElement() && !document.inQuirksMode()) ? HTM LStandardMode : HTMLQuirksMode);
1251 return CSSParser(context, UseCounter::getFrom(&document)).parseDeclaration(s tring, document.elementSheet()->contents());
1252 }
1253
1254 PassRefPtr<ImmutableStylePropertySet> CSSParser::parseDeclaration(const String& string, StyleSheetContents* contextStyleSheet)
1255 {
1256 setStyleSheet(contextStyleSheet);
1257
1258 setupParser("@-internal-decls ", string, "");
1259 cssyyparse(this);
1260 m_rule = 0;
1261
1262 if (m_hasFontFaceOnlyValues)
1263 deleteFontFaceOnlyValues();
1264
1265 RefPtr<ImmutableStylePropertySet> style = createStylePropertySet();
1266 clearProperties();
1267 return style.release();
1268 }
1269
1270
1271 bool CSSParser::parseDeclaration(MutableStylePropertySet* declaration, const Str ing& string, CSSParserObserver* observer, StyleSheetContents* contextStyleSheet)
1272 {
1273 setStyleSheet(contextStyleSheet);
1274
1275 TemporaryChange<CSSParserObserver*> scopedObsever(m_observer, observer);
1276
1277 setupParser("@-internal-decls ", string, "");
1278 if (m_observer) {
1279 m_observer->startRuleHeader(CSSRuleSourceData::STYLE_RULE, 0);
1280 m_observer->endRuleHeader(1);
1281 m_observer->startRuleBody(0);
1282 }
1283
1284 {
1285 StyleDeclarationScope scope(this, declaration);
1286 cssyyparse(this);
1287 }
1288
1289 m_rule = 0;
1290
1291 bool ok = false;
1292 if (m_hasFontFaceOnlyValues)
1293 deleteFontFaceOnlyValues();
1294 if (!m_parsedProperties.isEmpty()) {
1295 ok = true;
1296 declaration->addParsedProperties(m_parsedProperties);
1297 clearProperties();
1298 }
1299
1300 if (m_observer)
1301 m_observer->endRuleBody(string.length(), false);
1302
1303 return ok;
1304 }
1305
1306 PassRefPtr<MediaQuerySet> CSSParser::parseMediaQueryList(const String& string)
1307 {
1308 ASSERT(!m_mediaList);
1309
1310 // can't use { because tokenizer state switches from mediaquery to initial s tate when it sees { token.
1311 // instead insert one " " (which is caught by maybe_space in CSSGrammar.y)
1312 setupParser("@-internal-medialist ", string, "");
1313 cssyyparse(this);
1314
1315 ASSERT(m_mediaList);
1316 return m_mediaList.release();
1317 }
1318
1319 static inline void filterProperties(bool important, const CSSParser::ParsedPrope rtyVector& input, Vector<CSSProperty, 256>& output, size_t& unusedEntries, BitAr ray<numCSSProperties>& seenProperties, HashSet<AtomicString>& seenVariables)
1320 {
1321 // Add properties in reverse order so that highest priority definitions are reached first. Duplicate definitions can then be ignored when found.
1322 for (int i = input.size() - 1; i >= 0; --i) {
1323 const CSSProperty& property = input[i];
1324 if (property.isImportant() != important)
1325 continue;
1326 if (property.id() == CSSPropertyVariable) {
1327 const AtomicString& name = toCSSVariableValue(property.value())->nam e();
1328 if (!seenVariables.add(name).isNewEntry)
1329 continue;
1330 output[--unusedEntries] = property;
1331 continue;
1332 }
1333 const unsigned propertyIDIndex = property.id() - firstCSSProperty;
1334 if (seenProperties.get(propertyIDIndex))
1335 continue;
1336 seenProperties.set(propertyIDIndex);
1337 output[--unusedEntries] = property;
1338 }
1339 }
1340
1341 PassRefPtr<ImmutableStylePropertySet> CSSParser::createStylePropertySet()
1342 {
1343 BitArray<numCSSProperties> seenProperties;
1344 size_t unusedEntries = m_parsedProperties.size();
1345 Vector<CSSProperty, 256> results(unusedEntries);
1346
1347 // Important properties have higher priority, so add them first. Duplicate d efinitions can then be ignored when found.
1348 HashSet<AtomicString> seenVariables;
1349 filterProperties(true, m_parsedProperties, results, unusedEntries, seenPrope rties, seenVariables);
1350 filterProperties(false, m_parsedProperties, results, unusedEntries, seenProp erties, seenVariables);
1351 if (unusedEntries)
1352 results.remove(0, unusedEntries);
1353
1354 CSSParserMode mode = inViewport() ? CSSViewportRuleMode : m_context.mode();
1355
1356 return ImmutableStylePropertySet::create(results.data(), results.size(), mod e);
1357 }
1358
1359 void CSSParser::addPropertyWithPrefixingVariant(CSSPropertyID propId, PassRefPtr <CSSValue> value, bool important, bool implicit)
1360 {
1361 RefPtr<CSSValue> val = value.get();
1362 addProperty(propId, value, important, implicit);
1363
1364 CSSPropertyID prefixingVariant = prefixingVariantForPropertyId(propId);
1365 if (prefixingVariant == propId)
1366 return;
1367
1368 if (m_currentShorthand) {
1369 // We can't use ShorthandScope here as we can already be inside one (e.g we are parsing CSSTransition).
1370 m_currentShorthand = prefixingVariantForPropertyId(m_currentShorthand);
1371 addProperty(prefixingVariant, val.release(), important, implicit);
1372 m_currentShorthand = prefixingVariantForPropertyId(m_currentShorthand);
1373 } else {
1374 addProperty(prefixingVariant, val.release(), important, implicit);
1375 }
1376 }
1377
1378 void CSSParser::addProperty(CSSPropertyID propId, PassRefPtr<CSSValue> value, bo ol important, bool implicit)
1379 {
1380 CSSPrimitiveValue* primitiveValue = value->isPrimitiveValue() ? toCSSPrimiti veValue(value.get()) : 0;
1381 // This property doesn't belong to a shorthand or is a CSS variable (which w ill be resolved later).
1382 if (!m_currentShorthand || (primitiveValue && primitiveValue->isVariableName ())) {
1383 m_parsedProperties.append(CSSProperty(propId, value, important, false, C SSPropertyInvalid, m_implicitShorthand || implicit));
1384 return;
1385 }
1386
1387 Vector<StylePropertyShorthand, 4> shorthands;
1388 getMatchingShorthandsForLonghand(propId, &shorthands);
1389 // The longhand does not belong to multiple shorthands.
1390 if (shorthands.size() == 1)
1391 m_parsedProperties.append(CSSProperty(propId, value, important, true, CS SPropertyInvalid, m_implicitShorthand || implicit));
1392 else
1393 m_parsedProperties.append(CSSProperty(propId, value, important, true, in dexOfShorthandForLonghand(m_currentShorthand, shorthands), m_implicitShorthand | | implicit));
1394 }
1395
1396 void CSSParser::rollbackLastProperties(int num)
1397 {
1398 ASSERT(num >= 0);
1399 ASSERT(m_parsedProperties.size() >= static_cast<unsigned>(num));
1400 m_parsedProperties.shrink(m_parsedProperties.size() - num);
1401 }
1402
1403 void CSSParser::clearProperties()
1404 {
1405 m_parsedProperties.clear();
1406 m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
1407 m_hasFontFaceOnlyValues = false;
1408 }
1409
1410 KURL CSSParser::completeURL(const String& url) const
1411 {
1412 return m_context.completeURL(url);
1413 }
1414
1415 bool CSSParser::validCalculationUnit(CSSParserValue* value, Units unitflags, Rel easeParsedCalcValueCondition releaseCalc)
1416 {
1417 bool mustBeNonNegative = unitflags & FNonNeg;
1418
1419 if (!parseCalculation(value, mustBeNonNegative ? ValueRangeNonNegative : Val ueRangeAll))
1420 return false;
1421
1422 bool b = false;
1423 switch (m_parsedCalculation->category()) {
1424 case CalcLength:
1425 b = (unitflags & FLength);
1426 break;
1427 case CalcPercent:
1428 b = (unitflags & FPercent);
1429 if (b && mustBeNonNegative && m_parsedCalculation->isNegative())
1430 b = false;
1431 break;
1432 case CalcNumber:
1433 b = (unitflags & FNumber);
1434 if (!b && (unitflags & FInteger) && m_parsedCalculation->isInt())
1435 b = true;
1436 if (b && mustBeNonNegative && m_parsedCalculation->isNegative())
1437 b = false;
1438 break;
1439 case CalcPercentLength:
1440 b = (unitflags & FPercent) && (unitflags & FLength);
1441 break;
1442 case CalcPercentNumber:
1443 b = (unitflags & FPercent) && (unitflags & FNumber);
1444 break;
1445 case CalcVariable:
1446 b = true;
1447 break;
1448 case CalcOther:
1449 break;
1450 }
1451 if (!b || releaseCalc == ReleaseParsedCalcValue)
1452 m_parsedCalculation.release();
1453 return b;
1454 }
1455
1456 inline bool CSSParser::shouldAcceptUnitLessValues(CSSParserValue* value, Units u nitflags, CSSParserMode cssParserMode)
1457 {
1458 // Quirks mode and presentation attributes accept unit less values.
1459 return (unitflags & (FLength | FAngle | FTime)) && (!value->fValue || isUnit LessLengthParsingEnabledForMode(cssParserMode));
1460 }
1461
1462 bool CSSParser::validUnit(CSSParserValue* value, Units unitflags, CSSParserMode cssParserMode, ReleaseParsedCalcValueCondition releaseCalc)
1463 {
1464 if (isCalculation(value))
1465 return validCalculationUnit(value, unitflags, releaseCalc);
1466
1467 bool b = false;
1468 switch (value->unit) {
1469 case CSSPrimitiveValue::CSS_VARIABLE_NAME:
1470 // Variables are checked at the point they are dereferenced because unit type is not available here.
1471 b = true;
1472 break;
1473 case CSSPrimitiveValue::CSS_NUMBER:
1474 b = (unitflags & FNumber);
1475 if (!b && shouldAcceptUnitLessValues(value, unitflags, cssParserMode)) {
1476 value->unit = (unitflags & FLength) ? CSSPrimitiveValue::CSS_PX :
1477 ((unitflags & FAngle) ? CSSPrimitiveValue::CSS_DEG : C SSPrimitiveValue::CSS_MS);
1478 b = true;
1479 }
1480 if (!b && (unitflags & FInteger) && value->isInt)
1481 b = true;
1482 if (!b && (unitflags & FPositiveInteger) && value->isInt && value->fValu e > 0)
1483 b = true;
1484 break;
1485 case CSSPrimitiveValue::CSS_PERCENTAGE:
1486 b = (unitflags & FPercent);
1487 break;
1488 case CSSParserValue::Q_EMS:
1489 case CSSPrimitiveValue::CSS_EMS:
1490 case CSSPrimitiveValue::CSS_REMS:
1491 case CSSPrimitiveValue::CSS_CHS:
1492 case CSSPrimitiveValue::CSS_EXS:
1493 case CSSPrimitiveValue::CSS_PX:
1494 case CSSPrimitiveValue::CSS_CM:
1495 case CSSPrimitiveValue::CSS_MM:
1496 case CSSPrimitiveValue::CSS_IN:
1497 case CSSPrimitiveValue::CSS_PT:
1498 case CSSPrimitiveValue::CSS_PC:
1499 case CSSPrimitiveValue::CSS_VW:
1500 case CSSPrimitiveValue::CSS_VH:
1501 case CSSPrimitiveValue::CSS_VMIN:
1502 case CSSPrimitiveValue::CSS_VMAX:
1503 b = (unitflags & FLength);
1504 break;
1505 case CSSPrimitiveValue::CSS_MS:
1506 case CSSPrimitiveValue::CSS_S:
1507 b = (unitflags & FTime);
1508 break;
1509 case CSSPrimitiveValue::CSS_DEG:
1510 case CSSPrimitiveValue::CSS_RAD:
1511 case CSSPrimitiveValue::CSS_GRAD:
1512 case CSSPrimitiveValue::CSS_TURN:
1513 b = (unitflags & FAngle);
1514 break;
1515 case CSSPrimitiveValue::CSS_DPPX:
1516 case CSSPrimitiveValue::CSS_DPI:
1517 case CSSPrimitiveValue::CSS_DPCM:
1518 b = (unitflags & FResolution);
1519 break;
1520 case CSSPrimitiveValue::CSS_HZ:
1521 case CSSPrimitiveValue::CSS_KHZ:
1522 case CSSPrimitiveValue::CSS_DIMENSION:
1523 default:
1524 break;
1525 }
1526 if (b && unitflags & FNonNeg && value->fValue < 0)
1527 b = false;
1528 return b;
1529 }
1530
1531 inline PassRefPtr<CSSPrimitiveValue> CSSParser::createPrimitiveNumericValue(CSSP arserValue* value)
1532 {
1533 if (value->unit == CSSPrimitiveValue::CSS_VARIABLE_NAME)
1534 return createPrimitiveVariableNameValue(value);
1535
1536 if (m_parsedCalculation) {
1537 ASSERT(isCalculation(value));
1538 return CSSPrimitiveValue::create(m_parsedCalculation.release());
1539 }
1540
1541 ASSERT((value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPr imitiveValue::CSS_KHZ)
1542 || (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrim itiveValue::CSS_CHS)
1543 || (value->unit >= CSSPrimitiveValue::CSS_VW && value->unit <= CSSPrimit iveValue::CSS_VMAX)
1544 || (value->unit >= CSSPrimitiveValue::CSS_DPPX && value->unit <= CSSPrim itiveValue::CSS_DPCM));
1545 return cssValuePool().createValue(value->fValue, static_cast<CSSPrimitiveVal ue::UnitTypes>(value->unit));
1546 }
1547
1548 inline PassRefPtr<CSSPrimitiveValue> CSSParser::createPrimitiveStringValue(CSSPa rserValue* value)
1549 {
1550 ASSERT(value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPri mitiveValue::CSS_IDENT);
1551 return cssValuePool().createValue(value->string, CSSPrimitiveValue::CSS_STRI NG);
1552 }
1553
1554 inline PassRefPtr<CSSPrimitiveValue> CSSParser::createPrimitiveVariableNameValue (CSSParserValue* value)
1555 {
1556 ASSERT(value->unit == CSSPrimitiveValue::CSS_VARIABLE_NAME);
1557 return CSSPrimitiveValue::create(value->string, CSSPrimitiveValue::CSS_VARIA BLE_NAME);
1558 }
1559
1560 static inline bool isComma(CSSParserValue* value)
1561 {
1562 return value && value->unit == CSSParserValue::Operator && value->iValue == ',';
1563 }
1564
1565 static inline bool isForwardSlashOperator(CSSParserValue* value)
1566 {
1567 ASSERT(value);
1568 return value->unit == CSSParserValue::Operator && value->iValue == '/';
1569 }
1570
1571 static bool isGeneratedImageValue(CSSParserValue* val)
1572 {
1573 if (val->unit != CSSParserValue::Function)
1574 return false;
1575
1576 return equalIgnoringCase(val->function->name, "-webkit-gradient(")
1577 || equalIgnoringCase(val->function->name, "-webkit-linear-gradient(")
1578 || equalIgnoringCase(val->function->name, "linear-gradient(")
1579 || equalIgnoringCase(val->function->name, "-webkit-repeating-linear-grad ient(")
1580 || equalIgnoringCase(val->function->name, "repeating-linear-gradient(")
1581 || equalIgnoringCase(val->function->name, "-webkit-radial-gradient(")
1582 || equalIgnoringCase(val->function->name, "radial-gradient(")
1583 || equalIgnoringCase(val->function->name, "-webkit-repeating-radial-grad ient(")
1584 || equalIgnoringCase(val->function->name, "repeating-radial-gradient(")
1585 || equalIgnoringCase(val->function->name, "-webkit-canvas(")
1586 || equalIgnoringCase(val->function->name, "-webkit-cross-fade(");
1587 }
1588
1589 bool CSSParser::validWidthOrHeight(CSSParserValue* value)
1590 {
1591 int id = value->id;
1592 if (id == CSSValueIntrinsic || id == CSSValueMinIntrinsic || id == CSSValueW ebkitMinContent || id == CSSValueWebkitMaxContent || id == CSSValueWebkitFillAva ilable || id == CSSValueWebkitFitContent)
1593 return true;
1594 return !id && validUnit(value, FLength | FPercent | FNonNeg);
1595 }
1596
1597 inline PassRefPtr<CSSPrimitiveValue> CSSParser::parseValidPrimitive(CSSValueID i dentifier, CSSParserValue* value)
1598 {
1599 if (identifier)
1600 return cssValuePool().createIdentifierValue(identifier);
1601 if (value->unit == CSSPrimitiveValue::CSS_STRING)
1602 return createPrimitiveStringValue(value);
1603 if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimit iveValue::CSS_KHZ)
1604 return createPrimitiveNumericValue(value);
1605 if (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrimitiv eValue::CSS_CHS)
1606 return createPrimitiveNumericValue(value);
1607 if (value->unit >= CSSPrimitiveValue::CSS_VW && value->unit <= CSSPrimitiveV alue::CSS_VMAX)
1608 return createPrimitiveNumericValue(value);
1609 if (value->unit >= CSSPrimitiveValue::CSS_DPPX && value->unit <= CSSPrimitiv eValue::CSS_DPCM)
1610 return createPrimitiveNumericValue(value);
1611 if (value->unit == CSSPrimitiveValue::CSS_VARIABLE_NAME)
1612 return createPrimitiveVariableNameValue(value);
1613 if (value->unit >= CSSParserValue::Q_EMS)
1614 return CSSPrimitiveValue::createAllowingMarginQuirk(value->fValue, CSSPr imitiveValue::CSS_EMS);
1615 if (isCalculation(value))
1616 return CSSPrimitiveValue::create(m_parsedCalculation.release());
1617
1618 return 0;
1619 }
1620
1621 void CSSParser::addExpandedPropertyForValue(CSSPropertyID propId, PassRefPtr<CSS Value> prpValue, bool important)
1622 {
1623 const StylePropertyShorthand& shorthand = shorthandForProperty(propId);
1624 unsigned shorthandLength = shorthand.length();
1625 if (!shorthandLength) {
1626 addProperty(propId, prpValue, important);
1627 return;
1628 }
1629
1630 RefPtr<CSSValue> value = prpValue;
1631 ShorthandScope scope(this, propId);
1632 const CSSPropertyID* longhands = shorthand.properties();
1633 for (unsigned i = 0; i < shorthandLength; ++i)
1634 addProperty(longhands[i], value, important);
1635 }
1636
1637 void CSSParser::setCurrentProperty(CSSPropertyID propId)
1638 {
1639 m_id = propId;
1640 }
1641
1642 bool CSSParser::parseValue(CSSPropertyID propId, bool important)
1643 {
1644 if (!isInternalPropertyAndValueParsingEnabledForMode(m_context.mode()) && is InternalProperty(propId))
1645 return false;
1646
1647 // We don't count the UA style sheet in our statistics.
1648 if (m_useCounter)
1649 m_useCounter->count(m_context, propId);
1650
1651 if (!m_valueList)
1652 return false;
1653
1654 CSSParserValue* value = m_valueList->current();
1655
1656 if (!value)
1657 return false;
1658
1659 if (inViewport()) {
1660 // Allow @viewport rules from UA stylesheets even if the feature is disa bled.
1661 if (!RuntimeEnabledFeatures::cssViewportEnabled() && !isUASheetBehavior( m_context.mode()))
1662 return false;
1663
1664 return parseViewportProperty(propId, important);
1665 }
1666
1667 // Note: m_parsedCalculation is used to pass the calc value to validUnit and then cleared at the end of this function.
1668 // FIXME: This is to avoid having to pass parsedCalc to all validUnit caller s.
1669 ASSERT(!m_parsedCalculation);
1670
1671 CSSValueID id = value->id;
1672
1673 int num = inShorthand() ? 1 : m_valueList->size();
1674
1675 if (id == CSSValueInherit) {
1676 if (num != 1)
1677 return false;
1678 addExpandedPropertyForValue(propId, cssValuePool().createInheritedValue( ), important);
1679 return true;
1680 }
1681 else if (id == CSSValueInitial) {
1682 if (num != 1)
1683 return false;
1684 addExpandedPropertyForValue(propId, cssValuePool().createExplicitInitial Value(), important);
1685 return true;
1686 }
1687
1688 if (!id && value->unit == CSSPrimitiveValue::CSS_VARIABLE_NAME && num == 1) {
1689 addProperty(propId, createPrimitiveVariableNameValue(value), important);
1690 m_valueList->next();
1691 return true;
1692 }
1693 ASSERT(propId != CSSPropertyVariable);
1694
1695 if (isKeywordPropertyID(propId)) {
1696 if (!isValidKeywordPropertyAndValue(propId, id, m_context))
1697 return false;
1698 if (m_valueList->next() && !inShorthand())
1699 return false;
1700 addProperty(propId, cssValuePool().createIdentifierValue(id), important) ;
1701 return true;
1702 }
1703
1704 bool validPrimitive = false;
1705 RefPtr<CSSValue> parsedValue;
1706
1707 switch (propId) {
1708 case CSSPropertySize: // <length>{1,2} | auto | [ <page-size > || [ portrait | landscape] ]
1709 return parseSize(propId, important);
1710
1711 case CSSPropertyQuotes: // [<string> <string>]+ | none | inher it
1712 if (id)
1713 validPrimitive = true;
1714 else
1715 return parseQuotes(propId, important);
1716 break;
1717 case CSSPropertyUnicodeBidi: // normal | embed | bidi-override | isolate | i solate-override | plaintext | inherit
1718 if (id == CSSValueNormal
1719 || id == CSSValueEmbed
1720 || id == CSSValueBidiOverride
1721 || id == CSSValueWebkitIsolate
1722 || id == CSSValueWebkitIsolateOverride
1723 || id == CSSValueWebkitPlaintext)
1724 validPrimitive = true;
1725 break;
1726
1727 case CSSPropertyContent: // [ <string> | <uri> | <counter> | at tr(X) | open-quote |
1728 // close-quote | no-open-quote | no-close-quote ]+ | inherit
1729 return parseContent(propId, important);
1730
1731 case CSSPropertyClip: // <shape> | auto | inherit
1732 if (id == CSSValueAuto)
1733 validPrimitive = true;
1734 else if (value->unit == CSSParserValue::Function)
1735 return parseClipShape(propId, important);
1736 break;
1737
1738 /* Start of supported CSS properties with validation. This is needed for par seShorthand to work
1739 * correctly and allows optimization in WebCore::applyRule(..)
1740 */
1741 case CSSPropertyOverflow: {
1742 ShorthandScope scope(this, propId);
1743 if (num != 1 || !parseValue(CSSPropertyOverflowY, important))
1744 return false;
1745
1746 RefPtr<CSSValue> overflowXValue;
1747
1748 // FIXME: -webkit-paged-x or -webkit-paged-y only apply to overflow-y. I f this value has been
1749 // set using the shorthand, then for now overflow-x will default to auto , but once we implement
1750 // pagination controls, it should default to hidden. If the overflow-y v alue is anything but
1751 // paged-x or paged-y, then overflow-x and overflow-y should have the sa me value.
1752 if (id == CSSValueWebkitPagedX || id == CSSValueWebkitPagedY)
1753 overflowXValue = cssValuePool().createIdentifierValue(CSSValueAuto);
1754 else
1755 overflowXValue = m_parsedProperties.last().value();
1756 addProperty(CSSPropertyOverflowX, overflowXValue.release(), important);
1757 return true;
1758 }
1759
1760 case CSSPropertyTextAlign:
1761 // left | right | center | justify | -webkit-left | -webkit-right | -web kit-center | -webkit-match-parent
1762 // | start | end | <string> | inherit | -webkit-auto (converted to start )
1763 if ((id >= CSSValueWebkitAuto && id <= CSSValueWebkitMatchParent) || id == CSSValueStart || id == CSSValueEnd
1764 || value->unit == CSSPrimitiveValue::CSS_STRING)
1765 validPrimitive = true;
1766 break;
1767
1768 case CSSPropertyFontWeight: { // normal | bold | bolder | lighter | 100 | 2 00 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | inherit
1769 if (m_valueList->size() != 1)
1770 return false;
1771 return parseFontWeight(important);
1772 }
1773 case CSSPropertyBorderSpacing: {
1774 if (num == 1) {
1775 ShorthandScope scope(this, CSSPropertyBorderSpacing);
1776 if (!parseValue(CSSPropertyWebkitBorderHorizontalSpacing, important) )
1777 return false;
1778 CSSValue* value = m_parsedProperties.last().value();
1779 addProperty(CSSPropertyWebkitBorderVerticalSpacing, value, important );
1780 return true;
1781 }
1782 else if (num == 2) {
1783 ShorthandScope scope(this, CSSPropertyBorderSpacing);
1784 if (!parseValue(CSSPropertyWebkitBorderHorizontalSpacing, important) || !parseValue(CSSPropertyWebkitBorderVerticalSpacing, important))
1785 return false;
1786 return true;
1787 }
1788 return false;
1789 }
1790 case CSSPropertyWebkitBorderHorizontalSpacing:
1791 case CSSPropertyWebkitBorderVerticalSpacing:
1792 validPrimitive = validUnit(value, FLength | FNonNeg);
1793 break;
1794 case CSSPropertyOutlineColor: // <color> | invert | inherit
1795 // Outline color has "invert" as additional keyword.
1796 // Also, we want to allow the special focus color even in HTML Standard parsing mode.
1797 if (id == CSSValueInvert || id == CSSValueWebkitFocusRingColor) {
1798 validPrimitive = true;
1799 break;
1800 }
1801 /* nobreak */
1802 case CSSPropertyBackgroundColor: // <color> | inherit
1803 case CSSPropertyBorderTopColor: // <color> | inherit
1804 case CSSPropertyBorderRightColor:
1805 case CSSPropertyBorderBottomColor:
1806 case CSSPropertyBorderLeftColor:
1807 case CSSPropertyWebkitBorderStartColor:
1808 case CSSPropertyWebkitBorderEndColor:
1809 case CSSPropertyWebkitBorderBeforeColor:
1810 case CSSPropertyWebkitBorderAfterColor:
1811 case CSSPropertyColor: // <color> | inherit
1812 case CSSPropertyTextDecorationColor: // CSS3 text decoration colors
1813 case CSSPropertyTextLineThroughColor:
1814 case CSSPropertyTextUnderlineColor:
1815 case CSSPropertyTextOverlineColor:
1816 case CSSPropertyWebkitColumnRuleColor:
1817 case CSSPropertyWebkitTextEmphasisColor:
1818 case CSSPropertyWebkitTextFillColor:
1819 case CSSPropertyWebkitTextStrokeColor:
1820 if (propId == CSSPropertyTextDecorationColor
1821 && !RuntimeEnabledFeatures::css3TextDecorationsEnabled())
1822 return false;
1823
1824 if ((id >= CSSValueAqua && id <= CSSValueWebkitText) || id == CSSValueMe nu) {
1825 validPrimitive = isValueAllowedInMode(id, m_context.mode());
1826 } else {
1827 parsedValue = parseColor();
1828 if (parsedValue)
1829 m_valueList->next();
1830 }
1831 break;
1832
1833 case CSSPropertyCursor: {
1834 // Grammar defined by CSS3 UI and modified by CSS4 images:
1835 // [ [<image> [<x> <y>]?,]*
1836 // [ auto | crosshair | default | pointer | progress | move | e-resize | ne-resize |
1837 // nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize | ew-resize |
1838 // ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | tex t | wait | help |
1839 // vertical-text | cell | context-menu | alias | copy | no-drop | not-al lowed | -webkit-zoom-in
1840 // -webkit-zoom-out | all-scroll | -webkit-grab | -webkit-grabbing ] ] | inherit
1841 RefPtr<CSSValueList> list;
1842 while (value) {
1843 RefPtr<CSSValue> image = 0;
1844 if (value->unit == CSSPrimitiveValue::CSS_URI) {
1845 String uri = value->string;
1846 if (!uri.isNull())
1847 image = CSSImageValue::create(completeURL(uri));
1848 } else if (value->unit == CSSParserValue::Function && equalIgnoringC ase(value->function->name, "-webkit-image-set(")) {
1849 image = parseImageSet(m_valueList.get());
1850 if (!image)
1851 break;
1852 } else
1853 break;
1854
1855 Vector<int> coords;
1856 value = m_valueList->next();
1857 while (value && value->unit == CSSPrimitiveValue::CSS_NUMBER) {
1858 coords.append(int(value->fValue));
1859 value = m_valueList->next();
1860 }
1861 bool hasHotSpot = false;
1862 IntPoint hotSpot(-1, -1);
1863 int nrcoords = coords.size();
1864 if (nrcoords > 0 && nrcoords != 2)
1865 return false;
1866 if (nrcoords == 2) {
1867 hasHotSpot = true;
1868 hotSpot = IntPoint(coords[0], coords[1]);
1869 }
1870
1871 if (!list)
1872 list = CSSValueList::createCommaSeparated();
1873
1874 if (image)
1875 list->append(CSSCursorImageValue::create(image, hasHotSpot, hotS pot));
1876
1877 if (!value || !(value->unit == CSSParserValue::Operator && value->iV alue == ','))
1878 return false;
1879 value = m_valueList->next(); // comma
1880 }
1881 if (list) {
1882 if (!value)
1883 return false;
1884 if (inQuirksMode() && value->id == CSSValueHand) // MSIE 5 compatibi lity :/
1885 list->append(cssValuePool().createIdentifierValue(CSSValuePointe r));
1886 else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGr abbing) || value->id == CSSValueCopy || value->id == CSSValueNone)
1887 list->append(cssValuePool().createIdentifierValue(value->id));
1888 m_valueList->next();
1889 parsedValue = list.release();
1890 break;
1891 } else if (value) {
1892 id = value->id;
1893 if (inQuirksMode() && value->id == CSSValueHand) { // MSIE 5 compati bility :/
1894 id = CSSValuePointer;
1895 validPrimitive = true;
1896 } else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkit Grabbing) || value->id == CSSValueCopy || value->id == CSSValueNone)
1897 validPrimitive = true;
1898 } else {
1899 ASSERT_NOT_REACHED();
1900 return false;
1901 }
1902 break;
1903 }
1904
1905 case CSSPropertyBackgroundBlendMode:
1906 case CSSPropertyBackgroundAttachment:
1907 case CSSPropertyBackgroundClip:
1908 case CSSPropertyWebkitBackgroundClip:
1909 case CSSPropertyWebkitBackgroundComposite:
1910 case CSSPropertyBackgroundImage:
1911 case CSSPropertyBackgroundOrigin:
1912 case CSSPropertyMaskSourceType:
1913 case CSSPropertyWebkitBackgroundOrigin:
1914 case CSSPropertyBackgroundPosition:
1915 case CSSPropertyBackgroundPositionX:
1916 case CSSPropertyBackgroundPositionY:
1917 case CSSPropertyBackgroundSize:
1918 case CSSPropertyWebkitBackgroundSize:
1919 case CSSPropertyBackgroundRepeat:
1920 case CSSPropertyBackgroundRepeatX:
1921 case CSSPropertyBackgroundRepeatY:
1922 case CSSPropertyWebkitMaskClip:
1923 case CSSPropertyWebkitMaskComposite:
1924 case CSSPropertyWebkitMaskImage:
1925 case CSSPropertyWebkitMaskOrigin:
1926 case CSSPropertyWebkitMaskPosition:
1927 case CSSPropertyWebkitMaskPositionX:
1928 case CSSPropertyWebkitMaskPositionY:
1929 case CSSPropertyWebkitMaskSize:
1930 case CSSPropertyWebkitMaskRepeat:
1931 case CSSPropertyWebkitMaskRepeatX:
1932 case CSSPropertyWebkitMaskRepeatY:
1933 {
1934 RefPtr<CSSValue> val1;
1935 RefPtr<CSSValue> val2;
1936 CSSPropertyID propId1, propId2;
1937 bool result = false;
1938 if (parseFillProperty(propId, propId1, propId2, val1, val2)) {
1939 OwnPtr<ShorthandScope> shorthandScope;
1940 if (propId == CSSPropertyBackgroundPosition ||
1941 propId == CSSPropertyBackgroundRepeat ||
1942 propId == CSSPropertyWebkitMaskPosition ||
1943 propId == CSSPropertyWebkitMaskRepeat) {
1944 shorthandScope = adoptPtr(new ShorthandScope(this, propId));
1945 }
1946 addProperty(propId1, val1.release(), important);
1947 if (val2)
1948 addProperty(propId2, val2.release(), important);
1949 result = true;
1950 }
1951 m_implicitShorthand = false;
1952 return result;
1953 }
1954 case CSSPropertyObjectPosition:
1955 return RuntimeEnabledFeatures::objectFitPositionEnabled() && parseObject Position(important);
1956 case CSSPropertyListStyleImage: // <uri> | none | inherit
1957 case CSSPropertyBorderImageSource:
1958 case CSSPropertyWebkitMaskBoxImageSource:
1959 if (id == CSSValueNone) {
1960 parsedValue = cssValuePool().createIdentifierValue(CSSValueNone);
1961 m_valueList->next();
1962 } else if (value->unit == CSSPrimitiveValue::CSS_URI) {
1963 parsedValue = CSSImageValue::create(completeURL(value->string));
1964 m_valueList->next();
1965 } else if (isGeneratedImageValue(value)) {
1966 if (parseGeneratedImage(m_valueList.get(), parsedValue))
1967 m_valueList->next();
1968 else
1969 return false;
1970 }
1971 else if (value->unit == CSSParserValue::Function && equalIgnoringCase(va lue->function->name, "-webkit-image-set(")) {
1972 parsedValue = parseImageSet(m_valueList.get());
1973 if (!parsedValue)
1974 return false;
1975 m_valueList->next();
1976 }
1977 break;
1978
1979 case CSSPropertyWebkitTextStrokeWidth:
1980 case CSSPropertyOutlineWidth: // <border-width> | inherit
1981 case CSSPropertyBorderTopWidth: //// <border-width> | inherit
1982 case CSSPropertyBorderRightWidth: // Which is defined as
1983 case CSSPropertyBorderBottomWidth: // thin | medium | thick | <length>
1984 case CSSPropertyBorderLeftWidth:
1985 case CSSPropertyWebkitBorderStartWidth:
1986 case CSSPropertyWebkitBorderEndWidth:
1987 case CSSPropertyWebkitBorderBeforeWidth:
1988 case CSSPropertyWebkitBorderAfterWidth:
1989 case CSSPropertyWebkitColumnRuleWidth:
1990 if (id == CSSValueThin || id == CSSValueMedium || id == CSSValueThick)
1991 validPrimitive = true;
1992 else
1993 validPrimitive = validUnit(value, FLength | FNonNeg);
1994 break;
1995
1996 case CSSPropertyLetterSpacing: // normal | <length> | inherit
1997 case CSSPropertyWordSpacing: // normal | <length> | inherit
1998 if (id == CSSValueNormal)
1999 validPrimitive = true;
2000 else
2001 validPrimitive = validUnit(value, FLength);
2002 break;
2003
2004 case CSSPropertyTextIndent:
2005 parsedValue = parseTextIndent();
2006 break;
2007
2008 case CSSPropertyPaddingTop: //// <padding-width> | inherit
2009 case CSSPropertyPaddingRight: // Which is defined as
2010 case CSSPropertyPaddingBottom: // <length> | <percentage>
2011 case CSSPropertyPaddingLeft: ////
2012 case CSSPropertyWebkitPaddingStart:
2013 case CSSPropertyWebkitPaddingEnd:
2014 case CSSPropertyWebkitPaddingBefore:
2015 case CSSPropertyWebkitPaddingAfter:
2016 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg)) ;
2017 break;
2018
2019 case CSSPropertyMaxWidth:
2020 case CSSPropertyWebkitMaxLogicalWidth:
2021 case CSSPropertyMaxHeight:
2022 case CSSPropertyWebkitMaxLogicalHeight:
2023 validPrimitive = (id == CSSValueNone || validWidthOrHeight(value));
2024 break;
2025
2026 case CSSPropertyMinWidth:
2027 case CSSPropertyWebkitMinLogicalWidth:
2028 case CSSPropertyMinHeight:
2029 case CSSPropertyWebkitMinLogicalHeight:
2030 validPrimitive = validWidthOrHeight(value);
2031 break;
2032
2033 case CSSPropertyWidth:
2034 case CSSPropertyWebkitLogicalWidth:
2035 case CSSPropertyHeight:
2036 case CSSPropertyWebkitLogicalHeight:
2037 validPrimitive = (id == CSSValueAuto || validWidthOrHeight(value));
2038 break;
2039
2040 case CSSPropertyFontSize:
2041 return parseFontSize(important);
2042
2043 case CSSPropertyFontVariant: // normal | small-caps | inherit
2044 return parseFontVariant(important);
2045
2046 case CSSPropertyVerticalAlign:
2047 // baseline | sub | super | top | text-top | middle | bottom | text-bott om |
2048 // <percentage> | <length> | inherit
2049
2050 if (id >= CSSValueBaseline && id <= CSSValueWebkitBaselineMiddle)
2051 validPrimitive = true;
2052 else
2053 validPrimitive = (!id && validUnit(value, FLength | FPercent));
2054 break;
2055
2056 case CSSPropertyBottom: // <length> | <percentage> | auto | in herit
2057 case CSSPropertyLeft: // <length> | <percentage> | auto | in herit
2058 case CSSPropertyRight: // <length> | <percentage> | auto | in herit
2059 case CSSPropertyTop: // <length> | <percentage> | auto | in herit
2060 case CSSPropertyMarginTop: //// <margin-width> | inherit
2061 case CSSPropertyMarginRight: // Which is defined as
2062 case CSSPropertyMarginBottom: // <length> | <percentage> | auto | i nherit
2063 case CSSPropertyMarginLeft: ////
2064 case CSSPropertyWebkitMarginStart:
2065 case CSSPropertyWebkitMarginEnd:
2066 case CSSPropertyWebkitMarginBefore:
2067 case CSSPropertyWebkitMarginAfter:
2068 if (id == CSSValueAuto)
2069 validPrimitive = true;
2070 else
2071 validPrimitive = (!id && validUnit(value, FLength | FPercent));
2072 break;
2073
2074 case CSSPropertyOrphans: // <integer> | inherit | auto (We've added support for auto for backwards compatibility)
2075 case CSSPropertyWidows: // <integer> | inherit | auto (Ditto)
2076 if (id == CSSValueAuto)
2077 validPrimitive = true;
2078 else
2079 validPrimitive = (!id && validUnit(value, FPositiveInteger, HTMLQuir ksMode));
2080 break;
2081
2082 case CSSPropertyZIndex: // auto | <integer> | inherit
2083 if (id == CSSValueAuto)
2084 validPrimitive = true;
2085 else
2086 validPrimitive = (!id && validUnit(value, FInteger, HTMLQuirksMode)) ;
2087 break;
2088
2089 case CSSPropertyLineHeight:
2090 return parseLineHeight(important);
2091 case CSSPropertyCounterIncrement: // [ <identifier> <integer>? ]+ | none | inherit
2092 if (id != CSSValueNone)
2093 return parseCounter(propId, 1, important);
2094 validPrimitive = true;
2095 break;
2096 case CSSPropertyCounterReset: // [ <identifier> <integer>? ]+ | none | inherit
2097 if (id != CSSValueNone)
2098 return parseCounter(propId, 0, important);
2099 validPrimitive = true;
2100 break;
2101 case CSSPropertyFontFamily:
2102 // [[ <family-name> | <generic-family> ],]* [<family-name> | <generic-fa mily>] | inherit
2103 {
2104 parsedValue = parseFontFamily();
2105 break;
2106 }
2107
2108 case CSSPropertyTextDecoration:
2109 // Fall through 'text-decoration-line' parsing if CSS 3 Text Decoration
2110 // is disabled to match CSS 2.1 rules for parsing 'text-decoration'.
2111 if (RuntimeEnabledFeatures::css3TextDecorationsEnabled()) {
2112 // [ <text-decoration-line> || <text-decoration-style> || <text-deco ration-color> ] | inherit
2113 return parseShorthand(CSSPropertyTextDecoration, textDecorationShort hand(), important);
2114 }
2115 case CSSPropertyWebkitTextDecorationsInEffect:
2116 case CSSPropertyTextDecorationLine:
2117 // none | [ underline || overline || line-through || blink ] | inherit
2118 return parseTextDecoration(propId, important);
2119
2120 case CSSPropertyTextDecorationStyle:
2121 // solid | double | dotted | dashed | wavy
2122 if (RuntimeEnabledFeatures::css3TextDecorationsEnabled()
2123 && (id == CSSValueSolid || id == CSSValueDouble || id == CSSValueDot ted || id == CSSValueDashed || id == CSSValueWavy))
2124 validPrimitive = true;
2125 break;
2126
2127 case CSSPropertyTextUnderlinePosition:
2128 // auto | under | inherit
2129 if (RuntimeEnabledFeatures::css3TextDecorationsEnabled())
2130 return parseTextUnderlinePosition(important);
2131 return false;
2132
2133 case CSSPropertyZoom: // normal | reset | document | <number> | <pe rcentage> | inherit
2134 if (id == CSSValueNormal || id == CSSValueReset || id == CSSValueDocumen t)
2135 validPrimitive = true;
2136 else
2137 validPrimitive = (!id && validUnit(value, FNumber | FPercent | FNonN eg, HTMLStandardMode));
2138 break;
2139
2140 case CSSPropertySrc: // Only used within @font-face and @-webkit-filter, so cannot use inherit | initial or be !important. This is a list of urls or local r eferences.
2141 if (m_inFilterRule)
2142 return parseFilterRuleSrc();
2143 return parseFontFaceSrc();
2144
2145 case CSSPropertyUnicodeRange:
2146 return parseFontFaceUnicodeRange();
2147
2148 /* CSS3 properties */
2149
2150 case CSSPropertyBorderImage:
2151 case CSSPropertyWebkitMaskBoxImage:
2152 return parseBorderImageShorthand(propId, important);
2153 case CSSPropertyWebkitBorderImage: {
2154 if (RefPtr<CSSValue> result = parseBorderImage(propId)) {
2155 addProperty(propId, result, important);
2156 return true;
2157 }
2158 return false;
2159 }
2160
2161 case CSSPropertyBorderImageOutset:
2162 case CSSPropertyWebkitMaskBoxImageOutset: {
2163 RefPtr<CSSPrimitiveValue> result;
2164 if (parseBorderImageOutset(result)) {
2165 addProperty(propId, result, important);
2166 return true;
2167 }
2168 break;
2169 }
2170 case CSSPropertyBorderImageRepeat:
2171 case CSSPropertyWebkitMaskBoxImageRepeat: {
2172 RefPtr<CSSValue> result;
2173 if (parseBorderImageRepeat(result)) {
2174 addProperty(propId, result, important);
2175 return true;
2176 }
2177 break;
2178 }
2179 case CSSPropertyBorderImageSlice:
2180 case CSSPropertyWebkitMaskBoxImageSlice: {
2181 RefPtr<CSSBorderImageSliceValue> result;
2182 if (parseBorderImageSlice(propId, result)) {
2183 addProperty(propId, result, important);
2184 return true;
2185 }
2186 break;
2187 }
2188 case CSSPropertyBorderImageWidth:
2189 case CSSPropertyWebkitMaskBoxImageWidth: {
2190 RefPtr<CSSPrimitiveValue> result;
2191 if (parseBorderImageWidth(result)) {
2192 addProperty(propId, result, important);
2193 return true;
2194 }
2195 break;
2196 }
2197 case CSSPropertyBorderTopRightRadius:
2198 case CSSPropertyBorderTopLeftRadius:
2199 case CSSPropertyBorderBottomLeftRadius:
2200 case CSSPropertyBorderBottomRightRadius: {
2201 if (num != 1 && num != 2)
2202 return false;
2203 validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
2204 if (!validPrimitive)
2205 return false;
2206 RefPtr<CSSPrimitiveValue> parsedValue1 = createPrimitiveNumericValue(val ue);
2207 RefPtr<CSSPrimitiveValue> parsedValue2;
2208 if (num == 2) {
2209 value = m_valueList->next();
2210 validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
2211 if (!validPrimitive)
2212 return false;
2213 parsedValue2 = createPrimitiveNumericValue(value);
2214 } else
2215 parsedValue2 = parsedValue1;
2216
2217 addProperty(propId, createPrimitiveValuePair(parsedValue1.release(), par sedValue2.release()), important);
2218 return true;
2219 }
2220 case CSSPropertyTabSize:
2221 validPrimitive = validUnit(value, FInteger | FNonNeg);
2222 break;
2223 case CSSPropertyWebkitAspectRatio:
2224 return parseAspectRatio(important);
2225 case CSSPropertyBorderRadius:
2226 case CSSPropertyWebkitBorderRadius:
2227 return parseBorderRadius(propId, important);
2228 case CSSPropertyOutlineOffset:
2229 validPrimitive = validUnit(value, FLength);
2230 break;
2231 case CSSPropertyTextShadow: // CSS2 property, dropped in CSS2.1, back in CSS 3, so treat as CSS3
2232 case CSSPropertyBoxShadow:
2233 case CSSPropertyWebkitBoxShadow:
2234 if (id == CSSValueNone)
2235 validPrimitive = true;
2236 else {
2237 RefPtr<CSSValueList> shadowValueList = parseShadow(m_valueList.get() , propId);
2238 if (shadowValueList) {
2239 addProperty(propId, shadowValueList.release(), important);
2240 m_valueList->next();
2241 return true;
2242 }
2243 return false;
2244 }
2245 break;
2246 case CSSPropertyWebkitBoxReflect:
2247 if (id == CSSValueNone)
2248 validPrimitive = true;
2249 else
2250 return parseReflect(propId, important);
2251 break;
2252 case CSSPropertyOpacity:
2253 validPrimitive = validUnit(value, FNumber);
2254 break;
2255 case CSSPropertyWebkitBoxFlex:
2256 validPrimitive = validUnit(value, FNumber);
2257 break;
2258 case CSSPropertyWebkitBoxFlexGroup:
2259 validPrimitive = validUnit(value, FInteger | FNonNeg, HTMLStandardMode);
2260 break;
2261 case CSSPropertyWebkitBoxOrdinalGroup:
2262 validPrimitive = validUnit(value, FInteger | FNonNeg, HTMLStandardMode) && value->fValue;
2263 break;
2264 case CSSPropertyWebkitFilter:
2265 if (id == CSSValueNone)
2266 validPrimitive = true;
2267 else {
2268 RefPtr<CSSValue> val = parseFilter();
2269 if (val) {
2270 addProperty(propId, val, important);
2271 return true;
2272 }
2273 return false;
2274 }
2275 break;
2276 case CSSPropertyFlex: {
2277 ShorthandScope scope(this, propId);
2278 if (id == CSSValueNone) {
2279 addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(0, CSSPr imitiveValue::CSS_NUMBER), important);
2280 addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(0, CSS PrimitiveValue::CSS_NUMBER), important);
2281 addProperty(CSSPropertyFlexBasis, cssValuePool().createIdentifierVal ue(CSSValueAuto), important);
2282 return true;
2283 }
2284 return parseFlex(m_valueList.get(), important);
2285 }
2286 case CSSPropertyFlexBasis:
2287 // FIXME: Support intrinsic dimensions too.
2288 if (id == CSSValueAuto)
2289 validPrimitive = true;
2290 else
2291 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonN eg));
2292 break;
2293 case CSSPropertyFlexGrow:
2294 case CSSPropertyFlexShrink:
2295 validPrimitive = validUnit(value, FNumber | FNonNeg);
2296 break;
2297 case CSSPropertyOrder:
2298 if (validUnit(value, FInteger, HTMLStandardMode)) {
2299 if (value->unit != CSSPrimitiveValue::CSS_VARIABLE_NAME) {
2300 // We restrict the smallest value to int min + 2 because we use int min and int min + 1 as special values in a hash set.
2301 parsedValue = cssValuePool().createValue(max(static_cast<double> (std::numeric_limits<int>::min() + 2), value->fValue),
2302 static_cast<CSSPrimitiveValue::UnitTypes>(value->unit));
2303 m_valueList->next();
2304 } else {
2305 validPrimitive = true;
2306 }
2307 }
2308 break;
2309 case CSSPropertyInternalMarqueeIncrement:
2310 if (id == CSSValueSmall || id == CSSValueLarge || id == CSSValueMedium)
2311 validPrimitive = true;
2312 else
2313 validPrimitive = validUnit(value, FLength | FPercent);
2314 break;
2315 case CSSPropertyInternalMarqueeRepetition:
2316 if (id == CSSValueInfinite)
2317 validPrimitive = true;
2318 else
2319 validPrimitive = validUnit(value, FInteger | FNonNeg);
2320 break;
2321 case CSSPropertyInternalMarqueeSpeed:
2322 if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
2323 validPrimitive = true;
2324 else
2325 validPrimitive = validUnit(value, FTime | FInteger | FNonNeg);
2326 break;
2327 case CSSPropertyWebkitFlowInto:
2328 if (!RuntimeEnabledFeatures::cssRegionsEnabled())
2329 return false;
2330 return parseFlowThread(propId, important);
2331 case CSSPropertyWebkitFlowFrom:
2332 if (!RuntimeEnabledFeatures::cssRegionsEnabled())
2333 return false;
2334 return parseRegionThread(propId, important);
2335 case CSSPropertyWebkitTransform:
2336 if (id == CSSValueNone)
2337 validPrimitive = true;
2338 else {
2339 RefPtr<CSSValue> transformValue = parseTransform();
2340 if (transformValue) {
2341 addProperty(propId, transformValue.release(), important);
2342 return true;
2343 }
2344 return false;
2345 }
2346 break;
2347 case CSSPropertyWebkitTransformOrigin:
2348 case CSSPropertyWebkitTransformOriginX:
2349 case CSSPropertyWebkitTransformOriginY:
2350 case CSSPropertyWebkitTransformOriginZ: {
2351 RefPtr<CSSValue> val1;
2352 RefPtr<CSSValue> val2;
2353 RefPtr<CSSValue> val3;
2354 CSSPropertyID propId1, propId2, propId3;
2355 if (parseTransformOrigin(propId, propId1, propId2, propId3, val1, val2, val3)) {
2356 addProperty(propId1, val1.release(), important);
2357 if (val2)
2358 addProperty(propId2, val2.release(), important);
2359 if (val3)
2360 addProperty(propId3, val3.release(), important);
2361 return true;
2362 }
2363 return false;
2364 }
2365 case CSSPropertyWebkitPerspective:
2366 if (id == CSSValueNone)
2367 validPrimitive = true;
2368 else {
2369 // Accepting valueless numbers is a quirk of the -webkit prefixed ve rsion of the property.
2370 if (validUnit(value, FNumber | FLength | FNonNeg)) {
2371 RefPtr<CSSValue> val = createPrimitiveNumericValue(value);
2372 if (val) {
2373 addProperty(propId, val.release(), important);
2374 return true;
2375 }
2376 return false;
2377 }
2378 }
2379 break;
2380 case CSSPropertyWebkitPerspectiveOrigin:
2381 case CSSPropertyWebkitPerspectiveOriginX:
2382 case CSSPropertyWebkitPerspectiveOriginY: {
2383 RefPtr<CSSValue> val1;
2384 RefPtr<CSSValue> val2;
2385 CSSPropertyID propId1, propId2;
2386 if (parsePerspectiveOrigin(propId, propId1, propId2, val1, val2)) {
2387 addProperty(propId1, val1.release(), important);
2388 if (val2)
2389 addProperty(propId2, val2.release(), important);
2390 return true;
2391 }
2392 return false;
2393 }
2394 case CSSPropertyAnimationDelay:
2395 case CSSPropertyAnimationDirection:
2396 case CSSPropertyAnimationDuration:
2397 case CSSPropertyAnimationFillMode:
2398 case CSSPropertyAnimationName:
2399 case CSSPropertyAnimationPlayState:
2400 case CSSPropertyAnimationIterationCount:
2401 case CSSPropertyAnimationTimingFunction:
2402 if (!RuntimeEnabledFeatures::cssAnimationUnprefixedEnabled())
2403 break;
2404 case CSSPropertyWebkitAnimationDelay:
2405 case CSSPropertyWebkitAnimationDirection:
2406 case CSSPropertyWebkitAnimationDuration:
2407 case CSSPropertyWebkitAnimationFillMode:
2408 case CSSPropertyWebkitAnimationName:
2409 case CSSPropertyWebkitAnimationPlayState:
2410 case CSSPropertyWebkitAnimationIterationCount:
2411 case CSSPropertyWebkitAnimationTimingFunction:
2412 case CSSPropertyTransitionDelay:
2413 case CSSPropertyTransitionDuration:
2414 case CSSPropertyTransitionTimingFunction:
2415 case CSSPropertyTransitionProperty:
2416 case CSSPropertyWebkitTransitionDelay:
2417 case CSSPropertyWebkitTransitionDuration:
2418 case CSSPropertyWebkitTransitionTimingFunction:
2419 case CSSPropertyWebkitTransitionProperty: {
2420 RefPtr<CSSValue> val;
2421 AnimationParseContext context;
2422 if (parseAnimationProperty(propId, val, context)) {
2423 addPropertyWithPrefixingVariant(propId, val.release(), important);
2424 return true;
2425 }
2426 return false;
2427 }
2428
2429 case CSSPropertyGridAutoColumns:
2430 case CSSPropertyGridAutoRows:
2431 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2432 return false;
2433 parsedValue = parseGridTrackSize(*m_valueList);
2434 break;
2435
2436 case CSSPropertyGridDefinitionColumns:
2437 case CSSPropertyGridDefinitionRows:
2438 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2439 return false;
2440 return parseGridTrackList(propId, important);
2441
2442 case CSSPropertyGridColumnEnd:
2443 case CSSPropertyGridColumnStart:
2444 case CSSPropertyGridRowEnd:
2445 case CSSPropertyGridRowStart:
2446 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2447 return false;
2448 parsedValue = parseGridPosition();
2449 break;
2450
2451 case CSSPropertyGridColumn:
2452 case CSSPropertyGridRow:
2453 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2454 return false;
2455 return parseGridItemPositionShorthand(propId, important);
2456
2457 case CSSPropertyGridArea:
2458 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2459 return false;
2460 return parseGridAreaShorthand(important);
2461
2462 case CSSPropertyGridTemplate:
2463 if (!RuntimeEnabledFeatures::cssGridLayoutEnabled())
2464 return false;
2465 parsedValue = parseGridTemplate();
2466 break;
2467
2468 case CSSPropertyWebkitMarginCollapse: {
2469 if (num == 1) {
2470 ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
2471 if (!parseValue(webkitMarginCollapseShorthand().properties()[0], imp ortant))
2472 return false;
2473 CSSValue* value = m_parsedProperties.last().value();
2474 addProperty(webkitMarginCollapseShorthand().properties()[1], value, important);
2475 return true;
2476 }
2477 else if (num == 2) {
2478 ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
2479 if (!parseValue(webkitMarginCollapseShorthand().properties()[0], imp ortant) || !parseValue(webkitMarginCollapseShorthand().properties()[1], importan t))
2480 return false;
2481 return true;
2482 }
2483 return false;
2484 }
2485 case CSSPropertyTextLineThroughWidth:
2486 case CSSPropertyTextOverlineWidth:
2487 case CSSPropertyTextUnderlineWidth:
2488 if (id == CSSValueAuto || id == CSSValueNormal || id == CSSValueThin ||
2489 id == CSSValueMedium || id == CSSValueThick)
2490 validPrimitive = true;
2491 else
2492 validPrimitive = !id && validUnit(value, FNumber | FLength | FPercen t);
2493 break;
2494 case CSSPropertyWebkitColumnCount:
2495 parsedValue = parseColumnCount();
2496 break;
2497 case CSSPropertyWebkitColumnGap: // normal | <length>
2498 if (id == CSSValueNormal)
2499 validPrimitive = true;
2500 else
2501 validPrimitive = validUnit(value, FLength | FNonNeg);
2502 break;
2503 case CSSPropertyWebkitColumnAxis:
2504 if (id == CSSValueHorizontal || id == CSSValueVertical || id == CSSValue Auto)
2505 validPrimitive = true;
2506 break;
2507 case CSSPropertyWebkitColumnProgression:
2508 if (id == CSSValueNormal || id == CSSValueReverse)
2509 validPrimitive = true;
2510 break;
2511 case CSSPropertyWebkitColumnSpan: // none | all | 1 (will be dropped in the unprefixed property)
2512 if (id == CSSValueAll || id == CSSValueNone)
2513 validPrimitive = true;
2514 else
2515 validPrimitive = validUnit(value, FNumber | FNonNeg) && value->fValu e == 1;
2516 break;
2517 case CSSPropertyWebkitColumnWidth: // auto | <length>
2518 parsedValue = parseColumnWidth();
2519 break;
2520 // End of CSS3 properties
2521
2522 // Apple specific properties. These will never be standardized and are pure ly to
2523 // support custom WebKit-based Apple applications.
2524 case CSSPropertyWebkitLineClamp:
2525 // When specifying number of lines, don't allow 0 as a valid value
2526 // When specifying either type of unit, require non-negative integers
2527 validPrimitive = (!id && (value->unit == CSSPrimitiveValue::CSS_PERCENTA GE || value->fValue) && validUnit(value, FInteger | FPercent | FNonNeg, HTMLQuir ksMode));
2528 break;
2529
2530 case CSSPropertyWebkitFontSizeDelta: // <length>
2531 validPrimitive = validUnit(value, FLength);
2532 break;
2533
2534 case CSSPropertyWebkitHighlight:
2535 if (id == CSSValueNone || value->unit == CSSPrimitiveValue::CSS_STRING)
2536 validPrimitive = true;
2537 break;
2538
2539 case CSSPropertyWebkitHyphenateCharacter:
2540 if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
2541 validPrimitive = true;
2542 break;
2543
2544 case CSSPropertyWebkitLineGrid:
2545 if (id == CSSValueNone)
2546 validPrimitive = true;
2547 else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
2548 String lineGridValue = String(value->string);
2549 if (!lineGridValue.isEmpty()) {
2550 addProperty(propId, cssValuePool().createValue(lineGridValue, CS SPrimitiveValue::CSS_STRING), important);
2551 return true;
2552 }
2553 }
2554 break;
2555 case CSSPropertyWebkitLocale:
2556 if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
2557 validPrimitive = true;
2558 break;
2559
2560 // End Apple-specific properties
2561
2562 case CSSPropertyWebkitAppRegion:
2563 if (id >= CSSValueDrag && id <= CSSValueNoDrag)
2564 validPrimitive = true;
2565 break;
2566
2567 case CSSPropertyWebkitTapHighlightColor:
2568 if ((id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMe nu
2569 || (id >= CSSValueWebkitFocusRingColor && id < CSSValueWebkitText && inQuirksMode())) {
2570 validPrimitive = true;
2571 } else {
2572 parsedValue = parseColor();
2573 if (parsedValue)
2574 m_valueList->next();
2575 }
2576 break;
2577
2578 /* shorthand properties */
2579 case CSSPropertyBackground: {
2580 // Position must come before color in this array because a plain old "0" is a legal color
2581 // in quirks mode but it's usually the X coordinate of a position.
2582 const CSSPropertyID properties[] = { CSSPropertyBackgroundImage, CSSProp ertyBackgroundRepeat,
2583 CSSPropertyBackgroundAttachment, CSSPropertyB ackgroundPosition, CSSPropertyBackgroundOrigin,
2584 CSSPropertyBackgroundClip, CSSPropertyBackgro undColor, CSSPropertyBackgroundSize };
2585 return parseFillShorthand(propId, properties, WTF_ARRAY_LENGTH(propertie s), important);
2586 }
2587 case CSSPropertyWebkitMask: {
2588 const CSSPropertyID properties[] = { CSSPropertyWebkitMaskImage, CSSProp ertyWebkitMaskRepeat,
2589 CSSPropertyWebkitMaskPosition, CSSPropertyWebkitMaskOrigin, CSSPrope rtyWebkitMaskClip, CSSPropertyWebkitMaskSize };
2590 return parseFillShorthand(propId, properties, WTF_ARRAY_LENGTH(propertie s), important);
2591 }
2592 case CSSPropertyBorder:
2593 // [ 'border-width' || 'border-style' || <color> ] | inherit
2594 {
2595 if (parseShorthand(propId, parsingShorthandForProperty(CSSPropertyBorder ), important)) {
2596 // The CSS3 Borders and Backgrounds specification says that border a lso resets border-image. It's as
2597 // though a value of none was specified for the image.
2598 addExpandedPropertyForValue(CSSPropertyBorderImage, cssValuePool().c reateImplicitInitialValue(), important);
2599 return true;
2600 }
2601 return false;
2602 }
2603 case CSSPropertyBorderTop:
2604 // [ 'border-top-width' || 'border-style' || <color> ] | inherit
2605 return parseShorthand(propId, borderTopShorthand(), important);
2606 case CSSPropertyBorderRight:
2607 // [ 'border-right-width' || 'border-style' || <color> ] | inherit
2608 return parseShorthand(propId, borderRightShorthand(), important);
2609 case CSSPropertyBorderBottom:
2610 // [ 'border-bottom-width' || 'border-style' || <color> ] | inherit
2611 return parseShorthand(propId, borderBottomShorthand(), important);
2612 case CSSPropertyBorderLeft:
2613 // [ 'border-left-width' || 'border-style' || <color> ] | inherit
2614 return parseShorthand(propId, borderLeftShorthand(), important);
2615 case CSSPropertyWebkitBorderStart:
2616 return parseShorthand(propId, webkitBorderStartShorthand(), important);
2617 case CSSPropertyWebkitBorderEnd:
2618 return parseShorthand(propId, webkitBorderEndShorthand(), important);
2619 case CSSPropertyWebkitBorderBefore:
2620 return parseShorthand(propId, webkitBorderBeforeShorthand(), important);
2621 case CSSPropertyWebkitBorderAfter:
2622 return parseShorthand(propId, webkitBorderAfterShorthand(), important);
2623 case CSSPropertyOutline:
2624 // [ 'outline-color' || 'outline-style' || 'outline-width' ] | inherit
2625 return parseShorthand(propId, outlineShorthand(), important);
2626 case CSSPropertyBorderColor:
2627 // <color>{1,4} | inherit
2628 return parse4Values(propId, borderColorShorthand().properties(), importa nt);
2629 case CSSPropertyBorderWidth:
2630 // <border-width>{1,4} | inherit
2631 return parse4Values(propId, borderWidthShorthand().properties(), importa nt);
2632 case CSSPropertyBorderStyle:
2633 // <border-style>{1,4} | inherit
2634 return parse4Values(propId, borderStyleShorthand().properties(), importa nt);
2635 case CSSPropertyMargin:
2636 // <margin-width>{1,4} | inherit
2637 return parse4Values(propId, marginShorthand().properties(), important);
2638 case CSSPropertyPadding:
2639 // <padding-width>{1,4} | inherit
2640 return parse4Values(propId, paddingShorthand().properties(), important);
2641 case CSSPropertyFlexFlow:
2642 return parseShorthand(propId, flexFlowShorthand(), important);
2643 case CSSPropertyFont:
2644 // [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]?
2645 // 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit
2646 if (id >= CSSValueCaption && id <= CSSValueStatusBar)
2647 validPrimitive = true;
2648 else
2649 return parseFont(important);
2650 break;
2651 case CSSPropertyListStyle:
2652 return parseShorthand(propId, listStyleShorthand(), important);
2653 case CSSPropertyWebkitColumns:
2654 return parseColumnsShorthand(important);
2655 case CSSPropertyWebkitColumnRule:
2656 return parseShorthand(propId, webkitColumnRuleShorthand(), important);
2657 case CSSPropertyWebkitTextStroke:
2658 return parseShorthand(propId, webkitTextStrokeShorthand(), important);
2659 case CSSPropertyAnimation:
2660 if (!RuntimeEnabledFeatures::cssAnimationUnprefixedEnabled())
2661 break;
2662 case CSSPropertyWebkitAnimation:
2663 return parseAnimationShorthand(propId, important);
2664 case CSSPropertyTransition:
2665 case CSSPropertyWebkitTransition:
2666 return parseTransitionShorthand(propId, important);
2667 case CSSPropertyInvalid:
2668 return false;
2669 case CSSPropertyPage:
2670 return parsePage(propId, important);
2671 case CSSPropertyFontStretch:
2672 return false;
2673 // CSS Text Layout Module Level 3: Vertical writing support
2674 case CSSPropertyWebkitTextEmphasis:
2675 return parseShorthand(propId, webkitTextEmphasisShorthand(), important);
2676
2677 case CSSPropertyWebkitTextEmphasisStyle:
2678 return parseTextEmphasisStyle(important);
2679
2680 case CSSPropertyWebkitTextOrientation:
2681 // FIXME: For now just support sideways, sideways-right, upright and ver tical-right.
2682 if (id == CSSValueSideways || id == CSSValueSidewaysRight || id == CSSVa lueVerticalRight || id == CSSValueUpright)
2683 validPrimitive = true;
2684 break;
2685
2686 case CSSPropertyWebkitLineBoxContain:
2687 if (id == CSSValueNone)
2688 validPrimitive = true;
2689 else
2690 return parseLineBoxContain(important);
2691 break;
2692 case CSSPropertyWebkitFontFeatureSettings:
2693 if (id == CSSValueNormal)
2694 validPrimitive = true;
2695 else
2696 return parseFontFeatureSettings(important);
2697 break;
2698
2699 case CSSPropertyWebkitFontVariantLigatures:
2700 if (id == CSSValueNormal)
2701 validPrimitive = true;
2702 else
2703 return parseFontVariantLigatures(important);
2704 break;
2705 case CSSPropertyWebkitClipPath:
2706 if (id == CSSValueNone) {
2707 validPrimitive = true;
2708 } else if (value->unit == CSSParserValue::Function) {
2709 parsedValue = parseBasicShape();
2710 } else if (value->unit == CSSPrimitiveValue::CSS_URI) {
2711 parsedValue = CSSPrimitiveValue::create(value->string, CSSPrimitiveV alue::CSS_URI);
2712 addProperty(propId, parsedValue.release(), important);
2713 return true;
2714 }
2715 break;
2716 case CSSPropertyShapeInside:
2717 case CSSPropertyShapeOutside:
2718 parsedValue = parseShapeProperty(propId);
2719 break;
2720 case CSSPropertyShapeMargin:
2721 case CSSPropertyShapePadding:
2722 validPrimitive = (RuntimeEnabledFeatures::cssShapesEnabled() && !id && v alidUnit(value, FLength | FNonNeg));
2723 break;
2724 case CSSPropertyShapeImageThreshold:
2725 validPrimitive = (RuntimeEnabledFeatures::cssShapesEnabled() && !id && v alidUnit(value, FNumber));
2726 break;
2727
2728 case CSSPropertyTouchAction:
2729 // auto | none | [pan-x || pan-y]
2730 return parseTouchAction(important);
2731
2732 case CSSPropertyBorderBottomStyle:
2733 case CSSPropertyBorderCollapse:
2734 case CSSPropertyBorderLeftStyle:
2735 case CSSPropertyBorderRightStyle:
2736 case CSSPropertyBorderTopStyle:
2737 case CSSPropertyBoxSizing:
2738 case CSSPropertyCaptionSide:
2739 case CSSPropertyClear:
2740 case CSSPropertyDirection:
2741 case CSSPropertyDisplay:
2742 case CSSPropertyEmptyCells:
2743 case CSSPropertyFloat:
2744 case CSSPropertyFontStyle:
2745 case CSSPropertyImageRendering:
2746 case CSSPropertyListStylePosition:
2747 case CSSPropertyListStyleType:
2748 case CSSPropertyObjectFit:
2749 case CSSPropertyOutlineStyle:
2750 case CSSPropertyOverflowWrap:
2751 case CSSPropertyOverflowX:
2752 case CSSPropertyOverflowY:
2753 case CSSPropertyPageBreakAfter:
2754 case CSSPropertyPageBreakBefore:
2755 case CSSPropertyPageBreakInside:
2756 case CSSPropertyPointerEvents:
2757 case CSSPropertyPosition:
2758 case CSSPropertyResize:
2759 case CSSPropertySpeak:
2760 case CSSPropertyTableLayout:
2761 case CSSPropertyTextAlignLast:
2762 case CSSPropertyTextJustify:
2763 case CSSPropertyTextLineThroughMode:
2764 case CSSPropertyTextLineThroughStyle:
2765 case CSSPropertyTextOverflow:
2766 case CSSPropertyTextOverlineMode:
2767 case CSSPropertyTextOverlineStyle:
2768 case CSSPropertyTextRendering:
2769 case CSSPropertyTextTransform:
2770 case CSSPropertyTextUnderlineMode:
2771 case CSSPropertyTextUnderlineStyle:
2772 case CSSPropertyTouchActionDelay:
2773 case CSSPropertyVariable:
2774 case CSSPropertyVisibility:
2775 case CSSPropertyWebkitAppearance:
2776 case CSSPropertyWebkitBackfaceVisibility:
2777 case CSSPropertyWebkitBorderAfterStyle:
2778 case CSSPropertyWebkitBorderBeforeStyle:
2779 case CSSPropertyWebkitBorderEndStyle:
2780 case CSSPropertyWebkitBorderFit:
2781 case CSSPropertyWebkitBorderStartStyle:
2782 case CSSPropertyWebkitBoxAlign:
2783 case CSSPropertyWebkitBoxDecorationBreak:
2784 case CSSPropertyWebkitBoxDirection:
2785 case CSSPropertyWebkitBoxLines:
2786 case CSSPropertyWebkitBoxOrient:
2787 case CSSPropertyWebkitBoxPack:
2788 case CSSPropertyInternalCallback:
2789 case CSSPropertyWebkitColumnBreakAfter:
2790 case CSSPropertyWebkitColumnBreakBefore:
2791 case CSSPropertyWebkitColumnBreakInside:
2792 case CSSPropertyColumnFill:
2793 case CSSPropertyWebkitColumnRuleStyle:
2794 case CSSPropertyAlignContent:
2795 case CSSPropertyAlignItems:
2796 case CSSPropertyAlignSelf:
2797 case CSSPropertyFlexDirection:
2798 case CSSPropertyFlexWrap:
2799 case CSSPropertyJustifyContent:
2800 case CSSPropertyFontKerning:
2801 case CSSPropertyWebkitFontSmoothing:
2802 case CSSPropertyGridAutoFlow:
2803 case CSSPropertyWebkitLineAlign:
2804 case CSSPropertyWebkitLineBreak:
2805 case CSSPropertyWebkitLineSnap:
2806 case CSSPropertyWebkitMarginAfterCollapse:
2807 case CSSPropertyWebkitMarginBeforeCollapse:
2808 case CSSPropertyWebkitMarginBottomCollapse:
2809 case CSSPropertyWebkitMarginTopCollapse:
2810 case CSSPropertyInternalMarqueeDirection:
2811 case CSSPropertyInternalMarqueeStyle:
2812 case CSSPropertyWebkitPrintColorAdjust:
2813 case CSSPropertyWebkitRegionBreakAfter:
2814 case CSSPropertyWebkitRegionBreakBefore:
2815 case CSSPropertyWebkitRegionBreakInside:
2816 case CSSPropertyWebkitRegionFragment:
2817 case CSSPropertyWebkitRtlOrdering:
2818 case CSSPropertyWebkitRubyPosition:
2819 case CSSPropertyWebkitTextCombine:
2820 case CSSPropertyWebkitTextEmphasisPosition:
2821 case CSSPropertyWebkitTextSecurity:
2822 case CSSPropertyWebkitTransformStyle:
2823 case CSSPropertyWebkitUserDrag:
2824 case CSSPropertyWebkitUserModify:
2825 case CSSPropertyWebkitUserSelect:
2826 case CSSPropertyWebkitWrapFlow:
2827 case CSSPropertyWebkitWrapThrough:
2828 case CSSPropertyWebkitWritingMode:
2829 case CSSPropertyWhiteSpace:
2830 case CSSPropertyWordBreak:
2831 case CSSPropertyWordWrap:
2832 case CSSPropertyMixBlendMode:
2833 case CSSPropertyIsolation:
2834 // These properties should be handled before in isValidKeywordPropertyAn dValue().
2835 ASSERT_NOT_REACHED();
2836 return false;
2837 // Properties below are validated inside parseViewportProperty, because we
2838 // check for parser state. We need to invalidate if someone adds them outsid e
2839 // a @viewport rule.
2840 case CSSPropertyMaxZoom:
2841 case CSSPropertyMinZoom:
2842 case CSSPropertyOrientation:
2843 case CSSPropertyUserZoom:
2844 validPrimitive = false;
2845 break;
2846 default:
2847 return parseSVGValue(propId, important);
2848 }
2849
2850 if (validPrimitive) {
2851 parsedValue = parseValidPrimitive(id, value);
2852 m_valueList->next();
2853 }
2854 ASSERT(!m_parsedCalculation);
2855 if (parsedValue) {
2856 if (!m_valueList->current() || inShorthand()) {
2857 addProperty(propId, parsedValue.release(), important);
2858 return true;
2859 }
2860 }
2861 return false;
2862 }
2863
2864 void CSSParser::addFillValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval)
2865 {
2866 if (lval) {
2867 if (lval->isBaseValueList())
2868 toCSSValueList(lval.get())->append(rval);
2869 else {
2870 PassRefPtr<CSSValue> oldlVal(lval.release());
2871 PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated() ;
2872 list->append(oldlVal);
2873 list->append(rval);
2874 lval = list;
2875 }
2876 }
2877 else
2878 lval = rval;
2879 }
2880
2881 static bool parseBackgroundClip(CSSParserValue* parserValue, RefPtr<CSSValue>& c ssValue)
2882 {
2883 if (parserValue->id == CSSValueBorderBox || parserValue->id == CSSValuePaddi ngBox
2884 || parserValue->id == CSSValueContentBox || parserValue->id == CSSValueW ebkitText) {
2885 cssValue = cssValuePool().createIdentifierValue(parserValue->id);
2886 return true;
2887 }
2888 return false;
2889 }
2890
2891 bool CSSParser::useLegacyBackgroundSizeShorthandBehavior() const
2892 {
2893 return m_context.useLegacyBackgroundSizeShorthandBehavior();
2894 }
2895
2896 const int cMaxFillProperties = 9;
2897
2898 bool CSSParser::parseFillShorthand(CSSPropertyID propId, const CSSPropertyID* pr operties, int numProperties, bool important)
2899 {
2900 ASSERT(numProperties <= cMaxFillProperties);
2901 if (numProperties > cMaxFillProperties)
2902 return false;
2903
2904 ShorthandScope scope(this, propId);
2905
2906 bool parsedProperty[cMaxFillProperties] = { false };
2907 RefPtr<CSSValue> values[cMaxFillProperties];
2908 RefPtr<CSSValue> clipValue;
2909 RefPtr<CSSValue> positionYValue;
2910 RefPtr<CSSValue> repeatYValue;
2911 bool foundClip = false;
2912 int i;
2913 bool foundPositionCSSProperty = false;
2914
2915 while (m_valueList->current()) {
2916 CSSParserValue* val = m_valueList->current();
2917 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
2918 // We hit the end. Fill in all remaining values with the initial va lue.
2919 m_valueList->next();
2920 for (i = 0; i < numProperties; ++i) {
2921 if (properties[i] == CSSPropertyBackgroundColor && parsedPropert y[i])
2922 // Color is not allowed except as the last item in a list fo r backgrounds.
2923 // Reject the entire property.
2924 return false;
2925
2926 if (!parsedProperty[i] && properties[i] != CSSPropertyBackground Color) {
2927 addFillValue(values[i], cssValuePool().createImplicitInitial Value());
2928 if (properties[i] == CSSPropertyBackgroundPosition || proper ties[i] == CSSPropertyWebkitMaskPosition)
2929 addFillValue(positionYValue, cssValuePool().createImplic itInitialValue());
2930 if (properties[i] == CSSPropertyBackgroundRepeat || properti es[i] == CSSPropertyWebkitMaskRepeat)
2931 addFillValue(repeatYValue, cssValuePool().createImplicit InitialValue());
2932 if ((properties[i] == CSSPropertyBackgroundOrigin || propert ies[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) {
2933 // If background-origin wasn't present, then reset backg round-clip also.
2934 addFillValue(clipValue, cssValuePool().createImplicitIni tialValue());
2935 }
2936 }
2937 parsedProperty[i] = false;
2938 }
2939 if (!m_valueList->current())
2940 break;
2941 }
2942
2943 bool sizeCSSPropertyExpected = false;
2944 if (isForwardSlashOperator(val) && foundPositionCSSProperty) {
2945 sizeCSSPropertyExpected = true;
2946 m_valueList->next();
2947 }
2948
2949 foundPositionCSSProperty = false;
2950 bool found = false;
2951 for (i = 0; !found && i < numProperties; ++i) {
2952
2953 if (sizeCSSPropertyExpected && (properties[i] != CSSPropertyBackgrou ndSize && properties[i] != CSSPropertyWebkitMaskSize))
2954 continue;
2955 if (!sizeCSSPropertyExpected && (properties[i] == CSSPropertyBackgro undSize || properties[i] == CSSPropertyWebkitMaskSize))
2956 continue;
2957
2958 if (!parsedProperty[i]) {
2959 RefPtr<CSSValue> val1;
2960 RefPtr<CSSValue> val2;
2961 CSSPropertyID propId1, propId2;
2962 CSSParserValue* parserValue = m_valueList->current();
2963 // parseFillProperty() may modify m_implicitShorthand, so we MUS T reset it
2964 // before EACH return below.
2965 if (parseFillProperty(properties[i], propId1, propId2, val1, val 2)) {
2966 parsedProperty[i] = found = true;
2967 addFillValue(values[i], val1.release());
2968 if (properties[i] == CSSPropertyBackgroundPosition || proper ties[i] == CSSPropertyWebkitMaskPosition)
2969 addFillValue(positionYValue, val2.release());
2970 if (properties[i] == CSSPropertyBackgroundRepeat || properti es[i] == CSSPropertyWebkitMaskRepeat)
2971 addFillValue(repeatYValue, val2.release());
2972 if (properties[i] == CSSPropertyBackgroundOrigin || properti es[i] == CSSPropertyWebkitMaskOrigin) {
2973 // Reparse the value as a clip, and see if we succeed.
2974 if (parseBackgroundClip(parserValue, val1))
2975 addFillValue(clipValue, val1.release()); // The prop erty parsed successfully.
2976 else
2977 addFillValue(clipValue, cssValuePool().createImplici tInitialValue()); // Some value was used for origin that is not supported by cli p. Just reset clip instead.
2978 }
2979 if (properties[i] == CSSPropertyBackgroundClip || properties [i] == CSSPropertyWebkitMaskClip) {
2980 // Update clipValue
2981 addFillValue(clipValue, val1.release());
2982 foundClip = true;
2983 }
2984 if (properties[i] == CSSPropertyBackgroundPosition || proper ties[i] == CSSPropertyWebkitMaskPosition)
2985 foundPositionCSSProperty = true;
2986 }
2987 }
2988 }
2989
2990 // if we didn't find at least one match, this is an
2991 // invalid shorthand and we have to ignore it
2992 if (!found) {
2993 m_implicitShorthand = false;
2994 return false;
2995 }
2996 }
2997
2998 // Now add all of the properties we found.
2999 for (i = 0; i < numProperties; i++) {
3000 // Fill in any remaining properties with the initial value.
3001 if (!parsedProperty[i]) {
3002 addFillValue(values[i], cssValuePool().createImplicitInitialValue()) ;
3003 if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
3004 addFillValue(positionYValue, cssValuePool().createImplicitInitia lValue());
3005 if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
3006 addFillValue(repeatYValue, cssValuePool().createImplicitInitialV alue());
3007 if (properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) {
3008 // If background-origin wasn't present, then reset background-cl ip also.
3009 addFillValue(clipValue, cssValuePool().createImplicitInitialValu e());
3010 }
3011 }
3012 if (properties[i] == CSSPropertyBackgroundPosition) {
3013 addProperty(CSSPropertyBackgroundPositionX, values[i].release(), imp ortant);
3014 // it's OK to call positionYValue.release() since we only see CSSPro pertyBackgroundPosition once
3015 addProperty(CSSPropertyBackgroundPositionY, positionYValue.release() , important);
3016 } else if (properties[i] == CSSPropertyWebkitMaskPosition) {
3017 addProperty(CSSPropertyWebkitMaskPositionX, values[i].release(), imp ortant);
3018 // it's OK to call positionYValue.release() since we only see CSSPro pertyWebkitMaskPosition once
3019 addProperty(CSSPropertyWebkitMaskPositionY, positionYValue.release() , important);
3020 } else if (properties[i] == CSSPropertyBackgroundRepeat) {
3021 addProperty(CSSPropertyBackgroundRepeatX, values[i].release(), impor tant);
3022 // it's OK to call repeatYValue.release() since we only see CSSPrope rtyBackgroundPosition once
3023 addProperty(CSSPropertyBackgroundRepeatY, repeatYValue.release(), im portant);
3024 } else if (properties[i] == CSSPropertyWebkitMaskRepeat) {
3025 addProperty(CSSPropertyWebkitMaskRepeatX, values[i].release(), impor tant);
3026 // it's OK to call repeatYValue.release() since we only see CSSPrope rtyBackgroundPosition once
3027 addProperty(CSSPropertyWebkitMaskRepeatY, repeatYValue.release(), im portant);
3028 } else if ((properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) && !foundClip)
3029 // Value is already set while updating origin
3030 continue;
3031 else if (properties[i] == CSSPropertyBackgroundSize && !parsedProperty[i ] && useLegacyBackgroundSizeShorthandBehavior())
3032 continue;
3033 else
3034 addProperty(properties[i], values[i].release(), important);
3035
3036 // Add in clip values when we hit the corresponding origin property.
3037 if (properties[i] == CSSPropertyBackgroundOrigin && !foundClip)
3038 addProperty(CSSPropertyBackgroundClip, clipValue.release(), importan t);
3039 else if (properties[i] == CSSPropertyWebkitMaskOrigin && !foundClip)
3040 addProperty(CSSPropertyWebkitMaskClip, clipValue.release(), importan t);
3041 }
3042
3043 m_implicitShorthand = false;
3044 return true;
3045 }
3046
3047 void CSSParser::storeVariableDeclaration(const CSSParserString& name, PassOwnPtr <CSSParserValueList> value, bool important)
3048 {
3049 // When CSSGrammar.y encounters an invalid declaration it passes null for th e CSSParserValueList, just bail.
3050 if (!value)
3051 return;
3052
3053 static const unsigned prefixLength = sizeof("var-") - 1;
3054
3055 ASSERT(name.length() > prefixLength);
3056 AtomicString variableName = name.atomicSubstring(prefixLength, name.length() - prefixLength);
3057
3058 StringBuilder builder;
3059 for (unsigned i = 0, size = value->size(); i < size; i++) {
3060 if (i)
3061 builder.append(' ');
3062 RefPtr<CSSValue> cssValue = value->valueAt(i)->createCSSValue();
3063 if (!cssValue)
3064 return;
3065 builder.append(cssValue->cssText());
3066 }
3067
3068 addProperty(CSSPropertyVariable, CSSVariableValue::create(variableName, buil der.toString()), important, false);
3069 }
3070
3071 void CSSParser::addAnimationValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> r val)
3072 {
3073 if (lval) {
3074 if (lval->isValueList())
3075 toCSSValueList(lval.get())->append(rval);
3076 else {
3077 PassRefPtr<CSSValue> oldVal(lval.release());
3078 PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated() ;
3079 list->append(oldVal);
3080 list->append(rval);
3081 lval = list;
3082 }
3083 }
3084 else
3085 lval = rval;
3086 }
3087
3088 bool CSSParser::parseAnimationShorthand(CSSPropertyID propId, bool important)
3089 {
3090 const StylePropertyShorthand& animationProperties = parsingShorthandForPrope rty(propId);
3091 const unsigned numProperties = 8;
3092
3093 // The list of properties in the shorthand should be the same
3094 // length as the list with animation name in last position, even though they are
3095 // in a different order.
3096 ASSERT(numProperties == animationProperties.length());
3097 ASSERT(numProperties == shorthandForProperty(propId).length());
3098
3099 ShorthandScope scope(this, propId);
3100
3101 bool parsedProperty[numProperties] = { false };
3102 AnimationParseContext context;
3103 RefPtr<CSSValue> values[numProperties];
3104
3105 unsigned i;
3106 while (m_valueList->current()) {
3107 CSSParserValue* val = m_valueList->current();
3108 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
3109 // We hit the end. Fill in all remaining values with the initial va lue.
3110 m_valueList->next();
3111 for (i = 0; i < numProperties; ++i) {
3112 if (!parsedProperty[i])
3113 addAnimationValue(values[i], cssValuePool().createImplicitIn itialValue());
3114 parsedProperty[i] = false;
3115 }
3116 if (!m_valueList->current())
3117 break;
3118 context.commitFirstAnimation();
3119 }
3120
3121 bool found = false;
3122 for (i = 0; i < numProperties; ++i) {
3123 if (!parsedProperty[i]) {
3124 RefPtr<CSSValue> val;
3125 if (parseAnimationProperty(animationProperties.properties()[i], val, context)) {
3126 parsedProperty[i] = found = true;
3127 addAnimationValue(values[i], val.release());
3128 break;
3129 }
3130 }
3131 }
3132
3133 // if we didn't find at least one match, this is an
3134 // invalid shorthand and we have to ignore it
3135 if (!found)
3136 return false;
3137 }
3138
3139 for (i = 0; i < numProperties; ++i) {
3140 // If we didn't find the property, set an intial value.
3141 if (!parsedProperty[i])
3142 addAnimationValue(values[i], cssValuePool().createImplicitInitialVal ue());
3143
3144 addProperty(animationProperties.properties()[i], values[i].release(), im portant);
3145 }
3146
3147 return true;
3148 }
3149
3150 bool CSSParser::parseTransitionShorthand(CSSPropertyID propId, bool important)
3151 {
3152 const unsigned numProperties = 4;
3153 const StylePropertyShorthand& shorthand = shorthandForProperty(propId);
3154 ASSERT(numProperties == shorthand.length());
3155
3156 ShorthandScope scope(this, propId);
3157
3158 bool parsedProperty[numProperties] = { false };
3159 AnimationParseContext context;
3160 RefPtr<CSSValue> values[numProperties];
3161
3162 unsigned i;
3163 while (m_valueList->current()) {
3164 CSSParserValue* val = m_valueList->current();
3165 if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
3166 // We hit the end. Fill in all remaining values with the initial val ue.
3167 m_valueList->next();
3168 for (i = 0; i < numProperties; ++i) {
3169 if (!parsedProperty[i])
3170 addAnimationValue(values[i], cssValuePool().createImplicitIn itialValue());
3171 parsedProperty[i] = false;
3172 }
3173 if (!m_valueList->current())
3174 break;
3175 context.commitFirstAnimation();
3176 }
3177
3178 bool found = false;
3179 for (i = 0; !found && i < numProperties; ++i) {
3180 if (!parsedProperty[i]) {
3181 RefPtr<CSSValue> val;
3182 if (parseAnimationProperty(shorthand.properties()[i], val, conte xt)) {
3183 parsedProperty[i] = found = true;
3184 addAnimationValue(values[i], val.release());
3185 }
3186
3187 // There are more values to process but 'none' or 'all' were alr eady defined as the animation property, the declaration becomes invalid.
3188 if (!context.animationPropertyKeywordAllowed() && context.hasCom mittedFirstAnimation())
3189 return false;
3190 }
3191 }
3192
3193 // if we didn't find at least one match, this is an
3194 // invalid shorthand and we have to ignore it
3195 if (!found)
3196 return false;
3197 }
3198
3199 // Fill in any remaining properties with the initial value.
3200 for (i = 0; i < numProperties; ++i) {
3201 if (!parsedProperty[i])
3202 addAnimationValue(values[i], cssValuePool().createImplicitInitialVal ue());
3203 }
3204
3205 // Now add all of the properties we found.
3206 for (i = 0; i < numProperties; i++)
3207 addPropertyWithPrefixingVariant(shorthand.properties()[i], values[i].rel ease(), important);
3208
3209 return true;
3210 }
3211
3212 PassRefPtr<CSSValue> CSSParser::parseColumnWidth()
3213 {
3214 CSSParserValue* value = m_valueList->current();
3215 // Always parse lengths in strict mode here, since it would be ambiguous oth erwise when used in
3216 // the 'columns' shorthand property.
3217 if (value->id == CSSValueAuto
3218 || (validUnit(value, FLength | FNonNeg, HTMLStandardMode) && value->fVal ue)) {
3219 RefPtr<CSSValue> parsedValue = parseValidPrimitive(value->id, value);
3220 m_valueList->next();
3221 return parsedValue;
3222 }
3223 return 0;
3224 }
3225
3226 PassRefPtr<CSSValue> CSSParser::parseColumnCount()
3227 {
3228 CSSParserValue* value = m_valueList->current();
3229 if (value->id == CSSValueAuto
3230 || (!value->id && validUnit(value, FPositiveInteger, HTMLQuirksMode))) {
3231 RefPtr<CSSValue> parsedValue = parseValidPrimitive(value->id, value);
3232 m_valueList->next();
3233 return parsedValue;
3234 }
3235 return 0;
3236 }
3237
3238 bool CSSParser::parseColumnsShorthand(bool important)
3239 {
3240 RefPtr <CSSValue> columnWidth;
3241 RefPtr <CSSValue> columnCount;
3242 bool hasPendingExplicitAuto = false;
3243
3244 for (unsigned propertiesParsed = 0; CSSParserValue* value = m_valueList->cur rent(); propertiesParsed++) {
3245 if (propertiesParsed >= 2)
3246 return false; // Too many values for this shorthand. Invalid declara tion.
3247 if (!propertiesParsed && value->id == CSSValueAuto) {
3248 // 'auto' is a valid value for any of the two longhands, and at this point we
3249 // don't know which one(s) it is meant for. We need to see if there are other
3250 // values first.
3251 m_valueList->next();
3252 hasPendingExplicitAuto = true;
3253 } else {
3254 if (!columnWidth) {
3255 if ((columnWidth = parseColumnWidth()))
3256 continue;
3257 }
3258 if (!columnCount) {
3259 if ((columnCount = parseColumnCount()))
3260 continue;
3261 }
3262 // If we didn't find at least one match, this is an
3263 // invalid shorthand and we have to ignore it.
3264 return false;
3265 }
3266 }
3267 if (hasPendingExplicitAuto) {
3268 // Time to assign the previously skipped 'auto' value to a property. If both properties are
3269 // unassigned at this point (i.e. 'columns:auto'), it doesn't matter tha t much which one we
3270 // set (although it does make a slight difference to web-inspector). The one we don't set
3271 // here will get an implicit 'auto' value further down.
3272 if (!columnWidth) {
3273 columnWidth = cssValuePool().createIdentifierValue(CSSValueAuto);
3274 } else {
3275 ASSERT(!columnCount);
3276 columnCount = cssValuePool().createIdentifierValue(CSSValueAuto);
3277 }
3278 }
3279 ASSERT(columnCount || columnWidth);
3280
3281 // Any unassigned property at this point will become implicit 'auto'.
3282 if (columnWidth)
3283 addProperty(CSSPropertyWebkitColumnWidth, columnWidth, important);
3284 else
3285 addProperty(CSSPropertyWebkitColumnWidth, cssValuePool().createIdentifie rValue(CSSValueAuto), important, true /* implicit */);
3286 if (columnCount)
3287 addProperty(CSSPropertyWebkitColumnCount, columnCount, important);
3288 else
3289 addProperty(CSSPropertyWebkitColumnCount, cssValuePool().createIdentifie rValue(CSSValueAuto), important, true /* implicit */);
3290 return true;
3291 }
3292
3293 bool CSSParser::parseShorthand(CSSPropertyID propId, const StylePropertyShorthan d& shorthand, bool important)
3294 {
3295 // We try to match as many properties as possible
3296 // We set up an array of booleans to mark which property has been found,
3297 // and we try to search for properties until it makes no longer any sense.
3298 ShorthandScope scope(this, propId);
3299
3300 bool found = false;
3301 unsigned propertiesParsed = 0;
3302 bool propertyFound[6] = { false, false, false, false, false, false }; // 6 i s enough size.
3303
3304 while (m_valueList->current()) {
3305 found = false;
3306 for (unsigned propIndex = 0; !found && propIndex < shorthand.length(); + +propIndex) {
3307 if (!propertyFound[propIndex] && parseValue(shorthand.properties()[p ropIndex], important)) {
3308 propertyFound[propIndex] = found = true;
3309 propertiesParsed++;
3310 }
3311 }
3312
3313 // if we didn't find at least one match, this is an
3314 // invalid shorthand and we have to ignore it
3315 if (!found)
3316 return false;
3317 }
3318
3319 if (propertiesParsed == shorthand.length())
3320 return true;
3321
3322 // Fill in any remaining properties with the initial value.
3323 ImplicitScope implicitScope(this, PropertyImplicit);
3324 const StylePropertyShorthand* const* const propertiesForInitialization = sho rthand.propertiesForInitialization();
3325 for (unsigned i = 0; i < shorthand.length(); ++i) {
3326 if (propertyFound[i])
3327 continue;
3328
3329 if (propertiesForInitialization) {
3330 const StylePropertyShorthand& initProperties = *(propertiesForInitia lization[i]);
3331 for (unsigned propIndex = 0; propIndex < initProperties.length(); ++ propIndex)
3332 addProperty(initProperties.properties()[propIndex], cssValuePool ().createImplicitInitialValue(), important);
3333 } else
3334 addProperty(shorthand.properties()[i], cssValuePool().createImplicit InitialValue(), important);
3335 }
3336
3337 return true;
3338 }
3339
3340 bool CSSParser::parse4Values(CSSPropertyID propId, const CSSPropertyID *properti es, bool important)
3341 {
3342 /* From the CSS 2 specs, 8.3
3343 * If there is only one value, it applies to all sides. If there are two val ues, the top and
3344 * bottom margins are set to the first value and the right and left margins are set to the second.
3345 * If there are three values, the top is set to the first value, the left an d right are set to the
3346 * second, and the bottom is set to the third. If there are four values, the y apply to the top,
3347 * right, bottom, and left, respectively.
3348 */
3349
3350 int num = inShorthand() ? 1 : m_valueList->size();
3351
3352 ShorthandScope scope(this, propId);
3353
3354 // the order is top, right, bottom, left
3355 switch (num) {
3356 case 1: {
3357 if (!parseValue(properties[0], important))
3358 return false;
3359 CSSValue* value = m_parsedProperties.last().value();
3360 ImplicitScope implicitScope(this, PropertyImplicit);
3361 addProperty(properties[1], value, important);
3362 addProperty(properties[2], value, important);
3363 addProperty(properties[3], value, important);
3364 break;
3365 }
3366 case 2: {
3367 if (!parseValue(properties[0], important) || !parseValue(properties[ 1], important))
3368 return false;
3369 CSSValue* value = m_parsedProperties[m_parsedProperties.size() - 2]. value();
3370 ImplicitScope implicitScope(this, PropertyImplicit);
3371 addProperty(properties[2], value, important);
3372 value = m_parsedProperties[m_parsedProperties.size() - 2].value();
3373 addProperty(properties[3], value, important);
3374 break;
3375 }
3376 case 3: {
3377 if (!parseValue(properties[0], important) || !parseValue(properties[ 1], important) || !parseValue(properties[2], important))
3378 return false;
3379 CSSValue* value = m_parsedProperties[m_parsedProperties.size() - 2]. value();
3380 ImplicitScope implicitScope(this, PropertyImplicit);
3381 addProperty(properties[3], value, important);
3382 break;
3383 }
3384 case 4: {
3385 if (!parseValue(properties[0], important) || !parseValue(properties[ 1], important) ||
3386 !parseValue(properties[2], important) || !parseValue(properties[ 3], important))
3387 return false;
3388 break;
3389 }
3390 default: {
3391 return false;
3392 }
3393 }
3394
3395 return true;
3396 }
3397
3398 // auto | <identifier>
3399 bool CSSParser::parsePage(CSSPropertyID propId, bool important)
3400 {
3401 ASSERT(propId == CSSPropertyPage);
3402
3403 if (m_valueList->size() != 1)
3404 return false;
3405
3406 CSSParserValue* value = m_valueList->current();
3407 if (!value)
3408 return false;
3409
3410 if (value->id == CSSValueAuto) {
3411 addProperty(propId, cssValuePool().createIdentifierValue(value->id), imp ortant);
3412 return true;
3413 } else if (value->id == 0 && value->unit == CSSPrimitiveValue::CSS_IDENT) {
3414 addProperty(propId, createPrimitiveStringValue(value), important);
3415 return true;
3416 }
3417 return false;
3418 }
3419
3420 // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
3421 bool CSSParser::parseSize(CSSPropertyID propId, bool important)
3422 {
3423 ASSERT(propId == CSSPropertySize);
3424
3425 if (m_valueList->size() > 2)
3426 return false;
3427
3428 CSSParserValue* value = m_valueList->current();
3429 if (!value)
3430 return false;
3431
3432 RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
3433
3434 // First parameter.
3435 SizeParameterType paramType = parseSizeParameter(parsedValues.get(), value, None);
3436 if (paramType == None)
3437 return false;
3438
3439 // Second parameter, if any.
3440 value = m_valueList->next();
3441 if (value) {
3442 paramType = parseSizeParameter(parsedValues.get(), value, paramType);
3443 if (paramType == None)
3444 return false;
3445 }
3446
3447 addProperty(propId, parsedValues.release(), important);
3448 return true;
3449 }
3450
3451 CSSParser::SizeParameterType CSSParser::parseSizeParameter(CSSValueList* parsedV alues, CSSParserValue* value, SizeParameterType prevParamType)
3452 {
3453 switch (value->id) {
3454 case CSSValueAuto:
3455 if (prevParamType == None) {
3456 parsedValues->append(cssValuePool().createIdentifierValue(value->id) );
3457 return Auto;
3458 }
3459 return None;
3460 case CSSValueLandscape:
3461 case CSSValuePortrait:
3462 if (prevParamType == None || prevParamType == PageSize) {
3463 parsedValues->append(cssValuePool().createIdentifierValue(value->id) );
3464 return Orientation;
3465 }
3466 return None;
3467 case CSSValueA3:
3468 case CSSValueA4:
3469 case CSSValueA5:
3470 case CSSValueB4:
3471 case CSSValueB5:
3472 case CSSValueLedger:
3473 case CSSValueLegal:
3474 case CSSValueLetter:
3475 if (prevParamType == None || prevParamType == Orientation) {
3476 // Normalize to Page Size then Orientation order by prepending.
3477 // This is not specified by the CSS3 Paged Media specification, but for simpler processing later (StyleResolver::applyPageSizeProperty).
3478 parsedValues->prepend(cssValuePool().createIdentifierValue(value->id ));
3479 return PageSize;
3480 }
3481 return None;
3482 case 0:
3483 if (validUnit(value, FLength | FNonNeg) && (prevParamType == None || pre vParamType == Length)) {
3484 parsedValues->append(createPrimitiveNumericValue(value));
3485 return Length;
3486 }
3487 return None;
3488 default:
3489 return None;
3490 }
3491 }
3492
3493 // [ <string> <string> ]+ | inherit | none
3494 // inherit and none are handled in parseValue.
3495 bool CSSParser::parseQuotes(CSSPropertyID propId, bool important)
3496 {
3497 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
3498 while (CSSParserValue* val = m_valueList->current()) {
3499 RefPtr<CSSValue> parsedValue;
3500 if (val->unit == CSSPrimitiveValue::CSS_STRING)
3501 parsedValue = CSSPrimitiveValue::create(val->string, CSSPrimitiveVal ue::CSS_STRING);
3502 else
3503 break;
3504 values->append(parsedValue.release());
3505 m_valueList->next();
3506 }
3507 if (values->length()) {
3508 addProperty(propId, values.release(), important);
3509 m_valueList->next();
3510 return true;
3511 }
3512 return false;
3513 }
3514
3515 // [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open -quote | no-close-quote ]+ | inherit
3516 // in CSS 2.1 this got somewhat reduced:
3517 // [ <string> | attr(X) | open-quote | close-quote | no-open-quote | no-close-qu ote ]+ | inherit
3518 bool CSSParser::parseContent(CSSPropertyID propId, bool important)
3519 {
3520 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
3521
3522 while (CSSParserValue* val = m_valueList->current()) {
3523 RefPtr<CSSValue> parsedValue;
3524 if (val->unit == CSSPrimitiveValue::CSS_URI) {
3525 // url
3526 parsedValue = CSSImageValue::create(completeURL(val->string));
3527 } else if (val->unit == CSSParserValue::Function) {
3528 // attr(X) | counter(X [,Y]) | counters(X, Y, [,Z]) | -webkit-gradie nt(...)
3529 CSSParserValueList* args = val->function->args.get();
3530 if (!args)
3531 return false;
3532 if (equalIgnoringCase(val->function->name, "attr(")) {
3533 parsedValue = parseAttr(args);
3534 if (!parsedValue)
3535 return false;
3536 } else if (equalIgnoringCase(val->function->name, "counter(")) {
3537 parsedValue = parseCounterContent(args, false);
3538 if (!parsedValue)
3539 return false;
3540 } else if (equalIgnoringCase(val->function->name, "counters(")) {
3541 parsedValue = parseCounterContent(args, true);
3542 if (!parsedValue)
3543 return false;
3544 } else if (equalIgnoringCase(val->function->name, "-webkit-image-set (")) {
3545 parsedValue = parseImageSet(m_valueList.get());
3546 if (!parsedValue)
3547 return false;
3548 } else if (isGeneratedImageValue(val)) {
3549 if (!parseGeneratedImage(m_valueList.get(), parsedValue))
3550 return false;
3551 } else
3552 return false;
3553 } else if (val->unit == CSSPrimitiveValue::CSS_IDENT) {
3554 // open-quote
3555 // close-quote
3556 // no-open-quote
3557 // no-close-quote
3558 // inherit
3559 // FIXME: These are not yet implemented (http://bugs.webkit.org/show _bug.cgi?id=6503).
3560 // none
3561 // normal
3562 switch (val->id) {
3563 case CSSValueOpenQuote:
3564 case CSSValueCloseQuote:
3565 case CSSValueNoOpenQuote:
3566 case CSSValueNoCloseQuote:
3567 case CSSValueNone:
3568 case CSSValueNormal:
3569 parsedValue = cssValuePool().createIdentifierValue(val->id);
3570 default:
3571 break;
3572 }
3573 } else if (val->unit == CSSPrimitiveValue::CSS_STRING) {
3574 parsedValue = createPrimitiveStringValue(val);
3575 }
3576 if (!parsedValue)
3577 break;
3578 values->append(parsedValue.release());
3579 m_valueList->next();
3580 }
3581
3582 if (values->length()) {
3583 addProperty(propId, values.release(), important);
3584 m_valueList->next();
3585 return true;
3586 }
3587
3588 return false;
3589 }
3590
3591 PassRefPtr<CSSValue> CSSParser::parseAttr(CSSParserValueList* args)
3592 {
3593 if (args->size() != 1)
3594 return 0;
3595
3596 CSSParserValue* a = args->current();
3597
3598 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
3599 return 0;
3600
3601 String attrName = a->string;
3602 // CSS allows identifiers with "-" at the start, like "-webkit-mask-image".
3603 // But HTML attribute names can't have those characters, and we should not
3604 // even parse them inside attr().
3605 if (attrName[0] == '-')
3606 return 0;
3607
3608 if (m_context.isHTMLDocument())
3609 attrName = attrName.lower();
3610
3611 return cssValuePool().createValue(attrName, CSSPrimitiveValue::CSS_ATTR);
3612 }
3613
3614 PassRefPtr<CSSValue> CSSParser::parseBackgroundColor()
3615 {
3616 CSSValueID id = m_valueList->current()->id;
3617 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowt ext) || id == CSSValueMenu || id == CSSValueCurrentcolor ||
3618 (id >= CSSValueGrey && id < CSSValueWebkitText && inQuirksMode()))
3619 return cssValuePool().createIdentifierValue(id);
3620 return parseColor();
3621 }
3622
3623 bool CSSParser::parseFillImage(CSSParserValueList* valueList, RefPtr<CSSValue>& value)
3624 {
3625 if (valueList->current()->id == CSSValueNone) {
3626 value = cssValuePool().createIdentifierValue(CSSValueNone);
3627 return true;
3628 }
3629 if (valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
3630 value = CSSImageValue::create(completeURL(valueList->current()->string)) ;
3631 return true;
3632 }
3633
3634 if (isGeneratedImageValue(valueList->current()))
3635 return parseGeneratedImage(valueList, value);
3636
3637 if (valueList->current()->unit == CSSParserValue::Function && equalIgnoringC ase(valueList->current()->function->name, "-webkit-image-set(")) {
3638 value = parseImageSet(m_valueList.get());
3639 if (value)
3640 return true;
3641 }
3642
3643 return false;
3644 }
3645
3646 PassRefPtr<CSSValue> CSSParser::parseFillPositionX(CSSParserValueList* valueList )
3647 {
3648 int id = valueList->current()->id;
3649 if (id == CSSValueLeft || id == CSSValueRight || id == CSSValueCenter) {
3650 int percent = 0;
3651 if (id == CSSValueRight)
3652 percent = 100;
3653 else if (id == CSSValueCenter)
3654 percent = 50;
3655 return cssValuePool().createValue(percent, CSSPrimitiveValue::CSS_PERCEN TAGE);
3656 }
3657 if (validUnit(valueList->current(), FPercent | FLength))
3658 return createPrimitiveNumericValue(valueList->current());
3659 return 0;
3660 }
3661
3662 PassRefPtr<CSSValue> CSSParser::parseFillPositionY(CSSParserValueList* valueList )
3663 {
3664 int id = valueList->current()->id;
3665 if (id == CSSValueTop || id == CSSValueBottom || id == CSSValueCenter) {
3666 int percent = 0;
3667 if (id == CSSValueBottom)
3668 percent = 100;
3669 else if (id == CSSValueCenter)
3670 percent = 50;
3671 return cssValuePool().createValue(percent, CSSPrimitiveValue::CSS_PERCEN TAGE);
3672 }
3673 if (validUnit(valueList->current(), FPercent | FLength))
3674 return createPrimitiveNumericValue(valueList->current());
3675 return 0;
3676 }
3677
3678 PassRefPtr<CSSPrimitiveValue> CSSParser::parseFillPositionComponent(CSSParserVal ueList* valueList, unsigned& cumulativeFlags, FillPositionFlag& individualFlag, FillPositionParsingMode parsingMode)
3679 {
3680 CSSValueID id = valueList->current()->id;
3681 if (id == CSSValueLeft || id == CSSValueTop || id == CSSValueRight || id == CSSValueBottom || id == CSSValueCenter) {
3682 int percent = 0;
3683 if (id == CSSValueLeft || id == CSSValueRight) {
3684 if (cumulativeFlags & XFillPosition)
3685 return 0;
3686 cumulativeFlags |= XFillPosition;
3687 individualFlag = XFillPosition;
3688 if (id == CSSValueRight)
3689 percent = 100;
3690 }
3691 else if (id == CSSValueTop || id == CSSValueBottom) {
3692 if (cumulativeFlags & YFillPosition)
3693 return 0;
3694 cumulativeFlags |= YFillPosition;
3695 individualFlag = YFillPosition;
3696 if (id == CSSValueBottom)
3697 percent = 100;
3698 } else if (id == CSSValueCenter) {
3699 // Center is ambiguous, so we're not sure which position we've found yet, an x or a y.
3700 percent = 50;
3701 cumulativeFlags |= AmbiguousFillPosition;
3702 individualFlag = AmbiguousFillPosition;
3703 }
3704
3705 if (parsingMode == ResolveValuesAsKeyword)
3706 return cssValuePool().createIdentifierValue(id);
3707
3708 return cssValuePool().createValue(percent, CSSPrimitiveValue::CSS_PERCEN TAGE);
3709 }
3710 if (validUnit(valueList->current(), FPercent | FLength)) {
3711 if (!cumulativeFlags) {
3712 cumulativeFlags |= XFillPosition;
3713 individualFlag = XFillPosition;
3714 } else if (cumulativeFlags & (XFillPosition | AmbiguousFillPosition)) {
3715 cumulativeFlags |= YFillPosition;
3716 individualFlag = YFillPosition;
3717 } else {
3718 if (m_parsedCalculation)
3719 m_parsedCalculation.release();
3720 return 0;
3721 }
3722 return createPrimitiveNumericValue(valueList->current());
3723 }
3724 return 0;
3725 }
3726
3727 static bool isValueConflictingWithCurrentEdge(int value1, int value2)
3728 {
3729 if ((value1 == CSSValueLeft || value1 == CSSValueRight) && (value2 == CSSVal ueLeft || value2 == CSSValueRight))
3730 return true;
3731
3732 if ((value1 == CSSValueTop || value1 == CSSValueBottom) && (value2 == CSSVal ueTop || value2 == CSSValueBottom))
3733 return true;
3734
3735 return false;
3736 }
3737
3738 static bool isFillPositionKeyword(CSSValueID value)
3739 {
3740 return value == CSSValueLeft || value == CSSValueTop || value == CSSValueBot tom || value == CSSValueRight || value == CSSValueCenter;
3741 }
3742
3743 void CSSParser::parse4ValuesFillPosition(CSSParserValueList* valueList, RefPtr<C SSValue>& value1, RefPtr<CSSValue>& value2, PassRefPtr<CSSPrimitiveValue> parsed Value1, PassRefPtr<CSSPrimitiveValue> parsedValue2)
3744 {
3745 // [ left | right ] [ <percentage] | <length> ] && [ top | bottom ] [ <perce ntage> | <length> ]
3746 // In the case of 4 values <position> requires the second value to be a leng th or a percentage.
3747 if (isFillPositionKeyword(parsedValue2->getValueID()))
3748 return;
3749
3750 unsigned cumulativeFlags = 0;
3751 FillPositionFlag value3Flag = InvalidFillPosition;
3752 RefPtr<CSSPrimitiveValue> value3 = parseFillPositionComponent(valueList, cum ulativeFlags, value3Flag, ResolveValuesAsKeyword);
3753 if (!value3)
3754 return;
3755
3756 CSSValueID ident1 = parsedValue1->getValueID();
3757 CSSValueID ident3 = value3->getValueID();
3758
3759 if (ident1 == CSSValueCenter)
3760 return;
3761
3762 if (!isFillPositionKeyword(ident3) || ident3 == CSSValueCenter)
3763 return;
3764
3765 // We need to check if the values are not conflicting, e.g. they are not on the same edge. It is
3766 // needed as the second call to parseFillPositionComponent was on purpose no t checking it. In the
3767 // case of two values top 20px is invalid but in the case of 4 values it bec omes valid.
3768 if (isValueConflictingWithCurrentEdge(ident1, ident3))
3769 return;
3770
3771 valueList->next();
3772
3773 cumulativeFlags = 0;
3774 FillPositionFlag value4Flag = InvalidFillPosition;
3775 RefPtr<CSSPrimitiveValue> value4 = parseFillPositionComponent(valueList, cum ulativeFlags, value4Flag, ResolveValuesAsKeyword);
3776 if (!value4)
3777 return;
3778
3779 // 4th value must be a length or a percentage.
3780 if (isFillPositionKeyword(value4->getValueID()))
3781 return;
3782
3783 value1 = createPrimitiveValuePair(parsedValue1, parsedValue2);
3784 value2 = createPrimitiveValuePair(value3, value4);
3785
3786 if (ident1 == CSSValueTop || ident1 == CSSValueBottom)
3787 value1.swap(value2);
3788
3789 valueList->next();
3790 }
3791 void CSSParser::parse3ValuesFillPosition(CSSParserValueList* valueList, RefPtr<C SSValue>& value1, RefPtr<CSSValue>& value2, PassRefPtr<CSSPrimitiveValue> parsed Value1, PassRefPtr<CSSPrimitiveValue> parsedValue2)
3792 {
3793 unsigned cumulativeFlags = 0;
3794 FillPositionFlag value3Flag = InvalidFillPosition;
3795 RefPtr<CSSPrimitiveValue> value3 = parseFillPositionComponent(valueList, cum ulativeFlags, value3Flag, ResolveValuesAsKeyword);
3796
3797 // value3 is not an expected value, we return.
3798 if (!value3)
3799 return;
3800
3801 valueList->next();
3802
3803 bool swapNeeded = false;
3804 CSSValueID ident1 = parsedValue1->getValueID();
3805 CSSValueID ident2 = parsedValue2->getValueID();
3806 CSSValueID ident3 = value3->getValueID();
3807
3808 CSSValueID firstPositionKeyword;
3809 CSSValueID secondPositionKeyword;
3810
3811 if (ident1 == CSSValueCenter) {
3812 // <position> requires the first 'center' to be followed by a keyword.
3813 if (!isFillPositionKeyword(ident2))
3814 return;
3815
3816 // If 'center' is the first keyword then the last one needs to be a leng th.
3817 if (isFillPositionKeyword(ident3))
3818 return;
3819
3820 firstPositionKeyword = CSSValueLeft;
3821 if (ident2 == CSSValueLeft || ident2 == CSSValueRight) {
3822 firstPositionKeyword = CSSValueTop;
3823 swapNeeded = true;
3824 }
3825 value1 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(f irstPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::CSS_PERC ENTAGE));
3826 value2 = createPrimitiveValuePair(parsedValue2, value3);
3827 } else if (ident3 == CSSValueCenter) {
3828 if (isFillPositionKeyword(ident2))
3829 return;
3830
3831 secondPositionKeyword = CSSValueTop;
3832 if (ident1 == CSSValueTop || ident1 == CSSValueBottom) {
3833 secondPositionKeyword = CSSValueLeft;
3834 swapNeeded = true;
3835 }
3836 value1 = createPrimitiveValuePair(parsedValue1, parsedValue2);
3837 value2 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(s econdPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::CSS_PER CENTAGE));
3838 } else {
3839 RefPtr<CSSPrimitiveValue> firstPositionValue;
3840 RefPtr<CSSPrimitiveValue> secondPositionValue;
3841
3842 if (isFillPositionKeyword(ident2)) {
3843 // To match CSS grammar, we should only accept: [ center | left | ri ght | bottom | top ] [ left | right | top | bottom ] [ <percentage> | <length> ] .
3844 ASSERT(ident2 != CSSValueCenter);
3845
3846 if (isFillPositionKeyword(ident3))
3847 return;
3848
3849 secondPositionValue = value3;
3850 secondPositionKeyword = ident2;
3851 firstPositionValue = cssValuePool().createValue(0, CSSPrimitiveValue ::CSS_PERCENTAGE);
3852 } else {
3853 // Per CSS, we should only accept: [ right | left | top | bottom ] [ <percentage> | <length> ] [ center | left | right | bottom | top ].
3854 if (!isFillPositionKeyword(ident3))
3855 return;
3856
3857 firstPositionValue = parsedValue2;
3858 secondPositionKeyword = ident3;
3859 secondPositionValue = cssValuePool().createValue(0, CSSPrimitiveValu e::CSS_PERCENTAGE);
3860 }
3861
3862 if (isValueConflictingWithCurrentEdge(ident1, secondPositionKeyword))
3863 return;
3864
3865 value1 = createPrimitiveValuePair(parsedValue1, firstPositionValue);
3866 value2 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(s econdPositionKeyword), secondPositionValue);
3867 }
3868
3869 if (ident1 == CSSValueTop || ident1 == CSSValueBottom || swapNeeded)
3870 value1.swap(value2);
3871
3872 #ifndef NDEBUG
3873 CSSPrimitiveValue* first = toCSSPrimitiveValue(value1.get());
3874 CSSPrimitiveValue* second = toCSSPrimitiveValue(value2.get());
3875 ident1 = first->getPairValue()->first()->getValueID();
3876 ident2 = second->getPairValue()->first()->getValueID();
3877 ASSERT(ident1 == CSSValueLeft || ident1 == CSSValueRight);
3878 ASSERT(ident2 == CSSValueBottom || ident2 == CSSValueTop);
3879 #endif
3880 }
3881
3882 inline bool CSSParser::isPotentialPositionValue(CSSParserValue* value)
3883 {
3884 return isFillPositionKeyword(value->id) || validUnit(value, FPercent | FLeng th, ReleaseParsedCalcValue);
3885 }
3886
3887 void CSSParser::parseFillPosition(CSSParserValueList* valueList, RefPtr<CSSValue >& value1, RefPtr<CSSValue>& value2)
3888 {
3889 unsigned numberOfValues = 0;
3890 for (unsigned i = valueList->currentIndex(); i < valueList->size(); ++i, ++n umberOfValues) {
3891 CSSParserValue* current = valueList->valueAt(i);
3892 if (isComma(current) || !current || isForwardSlashOperator(current) || ! isPotentialPositionValue(current))
3893 break;
3894 }
3895
3896 if (numberOfValues > 4)
3897 return;
3898
3899 // If we are parsing two values, we can safely call the CSS 2.1 parsing func tion and return.
3900 if (numberOfValues <= 2) {
3901 parse2ValuesFillPosition(valueList, value1, value2);
3902 return;
3903 }
3904
3905 ASSERT(numberOfValues > 2 && numberOfValues <= 4);
3906
3907 CSSParserValue* value = valueList->current();
3908
3909 // <position> requires the first value to be a background keyword.
3910 if (!isFillPositionKeyword(value->id))
3911 return;
3912
3913 // Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length.
3914 unsigned cumulativeFlags = 0;
3915 FillPositionFlag value1Flag = InvalidFillPosition;
3916 FillPositionFlag value2Flag = InvalidFillPosition;
3917 value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag, ResolveValuesAsKeyword);
3918 if (!value1)
3919 return;
3920
3921 value = valueList->next();
3922
3923 // In case we are parsing more than two values, relax the check inside of pa rseFillPositionComponent. top 20px is
3924 // a valid start for <position>.
3925 cumulativeFlags = AmbiguousFillPosition;
3926 value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag, ResolveValuesAsKeyword);
3927 if (value2)
3928 valueList->next();
3929 else {
3930 value1.clear();
3931 return;
3932 }
3933
3934 RefPtr<CSSPrimitiveValue> parsedValue1 = toCSSPrimitiveValue(value1.get());
3935 RefPtr<CSSPrimitiveValue> parsedValue2 = toCSSPrimitiveValue(value2.get());
3936
3937 value1.clear();
3938 value2.clear();
3939
3940 // Per CSS3 syntax, <position> can't have 'center' as its second keyword as we have more arguments to follow.
3941 if (parsedValue2->getValueID() == CSSValueCenter)
3942 return;
3943
3944 if (numberOfValues == 3)
3945 parse3ValuesFillPosition(valueList, value1, value2, parsedValue1.release (), parsedValue2.release());
3946 else
3947 parse4ValuesFillPosition(valueList, value1, value2, parsedValue1.release (), parsedValue2.release());
3948 }
3949
3950 void CSSParser::parse2ValuesFillPosition(CSSParserValueList* valueList, RefPtr<C SSValue>& value1, RefPtr<CSSValue>& value2)
3951 {
3952 CSSParserValue* value = valueList->current();
3953
3954 // Parse the first value. We're just making sure that it is one of the vali d keywords or a percentage/length.
3955 unsigned cumulativeFlags = 0;
3956 FillPositionFlag value1Flag = InvalidFillPosition;
3957 FillPositionFlag value2Flag = InvalidFillPosition;
3958 value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag);
3959 if (!value1)
3960 return;
3961
3962 // It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we
3963 // can assume that any other values belong to the rest of the shorthand). I f we're not parsing a shorthand, though, the
3964 // value was explicitly specified for our property.
3965 value = valueList->next();
3966
3967 // First check for the comma. If so, we are finished parsing this value or value pair.
3968 if (isComma(value))
3969 value = 0;
3970
3971 if (value) {
3972 value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Fl ag);
3973 if (value2)
3974 valueList->next();
3975 else {
3976 if (!inShorthand()) {
3977 value1.clear();
3978 return;
3979 }
3980 }
3981 }
3982
3983 if (!value2)
3984 // Only one value was specified. If that value was not a keyword, then i t sets the x position, and the y position
3985 // is simply 50%. This is our default.
3986 // For keywords, the keyword was either an x-keyword (left/right), a y-k eyword (top/bottom), or an ambiguous keyword (center).
3987 // For left/right/center, the default of 50% in the y is still correct.
3988 value2 = cssValuePool().createValue(50, CSSPrimitiveValue::CSS_PERCENTAG E);
3989
3990 if (value1Flag == YFillPosition || value2Flag == XFillPosition)
3991 value1.swap(value2);
3992 }
3993
3994 void CSSParser::parseFillRepeat(RefPtr<CSSValue>& value1, RefPtr<CSSValue>& valu e2)
3995 {
3996 CSSValueID id = m_valueList->current()->id;
3997 if (id == CSSValueRepeatX) {
3998 m_implicitShorthand = true;
3999 value1 = cssValuePool().createIdentifierValue(CSSValueRepeat);
4000 value2 = cssValuePool().createIdentifierValue(CSSValueNoRepeat);
4001 m_valueList->next();
4002 return;
4003 }
4004 if (id == CSSValueRepeatY) {
4005 m_implicitShorthand = true;
4006 value1 = cssValuePool().createIdentifierValue(CSSValueNoRepeat);
4007 value2 = cssValuePool().createIdentifierValue(CSSValueRepeat);
4008 m_valueList->next();
4009 return;
4010 }
4011 if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace)
4012 value1 = cssValuePool().createIdentifierValue(id);
4013 else {
4014 value1 = 0;
4015 return;
4016 }
4017
4018 CSSParserValue* value = m_valueList->next();
4019
4020 // Parse the second value if one is available
4021 if (value && !isComma(value)) {
4022 id = value->id;
4023 if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRoun d || id == CSSValueSpace) {
4024 value2 = cssValuePool().createIdentifierValue(id);
4025 m_valueList->next();
4026 return;
4027 }
4028 }
4029
4030 // If only one value was specified, value2 is the same as value1.
4031 m_implicitShorthand = true;
4032 value2 = cssValuePool().createIdentifierValue(toCSSPrimitiveValue(value1.get ())->getValueID());
4033 }
4034
4035 PassRefPtr<CSSValue> CSSParser::parseFillSize(CSSPropertyID propId, bool& allowC omma)
4036 {
4037 allowComma = true;
4038 CSSParserValue* value = m_valueList->current();
4039
4040 if (value->id == CSSValueContain || value->id == CSSValueCover)
4041 return cssValuePool().createIdentifierValue(value->id);
4042
4043 RefPtr<CSSPrimitiveValue> parsedValue1;
4044
4045 if (value->id == CSSValueAuto)
4046 parsedValue1 = cssValuePool().createIdentifierValue(CSSValueAuto);
4047 else {
4048 if (!validUnit(value, FLength | FPercent))
4049 return 0;
4050 parsedValue1 = createPrimitiveNumericValue(value);
4051 }
4052
4053 RefPtr<CSSPrimitiveValue> parsedValue2;
4054 if ((value = m_valueList->next())) {
4055 if (value->unit == CSSParserValue::Operator && value->iValue == ',')
4056 allowComma = false;
4057 else if (value->id != CSSValueAuto) {
4058 if (!validUnit(value, FLength | FPercent)) {
4059 if (!inShorthand())
4060 return 0;
4061 // We need to rewind the value list, so that when it is advanced we'll end up back at this value.
4062 m_valueList->previous();
4063 } else
4064 parsedValue2 = createPrimitiveNumericValue(value);
4065 }
4066 } else if (!parsedValue2 && propId == CSSPropertyWebkitBackgroundSize) {
4067 // For backwards compatibility we set the second value to the first if i t is omitted.
4068 // We only need to do this for -webkit-background-size. It should be saf e to let masks match
4069 // the real property.
4070 parsedValue2 = parsedValue1;
4071 }
4072
4073 if (!parsedValue2)
4074 return parsedValue1;
4075 return createPrimitiveValuePair(parsedValue1.release(), parsedValue2.release ());
4076 }
4077
4078 bool CSSParser::parseFillProperty(CSSPropertyID propId, CSSPropertyID& propId1, CSSPropertyID& propId2,
4079 RefPtr<CSSValue>& retValue1, RefPtr<CSSValue>& retValue2)
4080 {
4081 RefPtr<CSSValueList> values;
4082 RefPtr<CSSValueList> values2;
4083 CSSParserValue* val;
4084 RefPtr<CSSValue> value;
4085 RefPtr<CSSValue> value2;
4086
4087 bool allowComma = false;
4088
4089 retValue1 = retValue2 = 0;
4090 propId1 = propId;
4091 propId2 = propId;
4092 if (propId == CSSPropertyBackgroundPosition) {
4093 propId1 = CSSPropertyBackgroundPositionX;
4094 propId2 = CSSPropertyBackgroundPositionY;
4095 } else if (propId == CSSPropertyWebkitMaskPosition) {
4096 propId1 = CSSPropertyWebkitMaskPositionX;
4097 propId2 = CSSPropertyWebkitMaskPositionY;
4098 } else if (propId == CSSPropertyBackgroundRepeat) {
4099 propId1 = CSSPropertyBackgroundRepeatX;
4100 propId2 = CSSPropertyBackgroundRepeatY;
4101 } else if (propId == CSSPropertyWebkitMaskRepeat) {
4102 propId1 = CSSPropertyWebkitMaskRepeatX;
4103 propId2 = CSSPropertyWebkitMaskRepeatY;
4104 }
4105
4106 while ((val = m_valueList->current())) {
4107 RefPtr<CSSValue> currValue;
4108 RefPtr<CSSValue> currValue2;
4109
4110 if (allowComma) {
4111 if (!isComma(val))
4112 return false;
4113 m_valueList->next();
4114 allowComma = false;
4115 } else {
4116 allowComma = true;
4117 switch (propId) {
4118 case CSSPropertyBackgroundColor:
4119 currValue = parseBackgroundColor();
4120 if (currValue)
4121 m_valueList->next();
4122 break;
4123 case CSSPropertyBackgroundAttachment:
4124 if (val->id == CSSValueScroll || val->id == CSSValueFixed || val->id == CSSValueLocal) {
4125 currValue = cssValuePool().createIdentifierValue(val->id );
4126 m_valueList->next();
4127 }
4128 break;
4129 case CSSPropertyBackgroundImage:
4130 case CSSPropertyWebkitMaskImage:
4131 if (parseFillImage(m_valueList.get(), currValue))
4132 m_valueList->next();
4133 break;
4134 case CSSPropertyWebkitBackgroundClip:
4135 case CSSPropertyWebkitBackgroundOrigin:
4136 case CSSPropertyWebkitMaskClip:
4137 case CSSPropertyWebkitMaskOrigin:
4138 // The first three values here are deprecated and do not app ly to the version of the property that has
4139 // the -webkit- prefix removed.
4140 if (val->id == CSSValueBorder || val->id == CSSValuePadding || val->id == CSSValueContent ||
4141 val->id == CSSValueBorderBox || val->id == CSSValuePaddi ngBox || val->id == CSSValueContentBox ||
4142 ((propId == CSSPropertyWebkitBackgroundClip || propId == CSSPropertyWebkitMaskClip) &&
4143 (val->id == CSSValueText || val->id == CSSValueWebkitTe xt))) {
4144 currValue = cssValuePool().createIdentifierValue(val->id );
4145 m_valueList->next();
4146 }
4147 break;
4148 case CSSPropertyBackgroundClip:
4149 if (parseBackgroundClip(val, currValue))
4150 m_valueList->next();
4151 break;
4152 case CSSPropertyBackgroundOrigin:
4153 if (val->id == CSSValueBorderBox || val->id == CSSValuePaddi ngBox || val->id == CSSValueContentBox) {
4154 currValue = cssValuePool().createIdentifierValue(val->id );
4155 m_valueList->next();
4156 }
4157 break;
4158 case CSSPropertyBackgroundPosition:
4159 case CSSPropertyWebkitMaskPosition:
4160 parseFillPosition(m_valueList.get(), currValue, currValue2);
4161 // parseFillPosition advances the m_valueList pointer.
4162 break;
4163 case CSSPropertyBackgroundPositionX:
4164 case CSSPropertyWebkitMaskPositionX: {
4165 currValue = parseFillPositionX(m_valueList.get());
4166 if (currValue)
4167 m_valueList->next();
4168 break;
4169 }
4170 case CSSPropertyBackgroundPositionY:
4171 case CSSPropertyWebkitMaskPositionY: {
4172 currValue = parseFillPositionY(m_valueList.get());
4173 if (currValue)
4174 m_valueList->next();
4175 break;
4176 }
4177 case CSSPropertyWebkitBackgroundComposite:
4178 case CSSPropertyWebkitMaskComposite:
4179 if (val->id >= CSSValueClear && val->id <= CSSValuePlusLight er) {
4180 currValue = cssValuePool().createIdentifierValue(val->id );
4181 m_valueList->next();
4182 }
4183 break;
4184 case CSSPropertyBackgroundBlendMode:
4185 if (RuntimeEnabledFeatures::cssCompositingEnabled() && (val- >id == CSSValueNormal || val->id == CSSValueMultiply
4186 || val->id == CSSValueScreen || val->id == CSSValueOverl ay || val->id == CSSValueDarken
4187 || val->id == CSSValueLighten || val->id == CSSValueCol orDodge || val->id == CSSValueColorBurn
4188 || val->id == CSSValueHardLight || val->id == CSSValueSo ftLight || val->id == CSSValueDifference
4189 || val->id == CSSValueExclusion || val->id == CSSValueHu e || val->id == CSSValueSaturation
4190 || val->id == CSSValueColor || val->id == CSSValueLumino sity)) {
4191 currValue = cssValuePool().createIdentifierValue(val->id );
4192 m_valueList->next();
4193 }
4194 break;
4195 case CSSPropertyBackgroundRepeat:
4196 case CSSPropertyWebkitMaskRepeat:
4197 parseFillRepeat(currValue, currValue2);
4198 // parseFillRepeat advances the m_valueList pointer
4199 break;
4200 case CSSPropertyBackgroundSize:
4201 case CSSPropertyWebkitBackgroundSize:
4202 case CSSPropertyWebkitMaskSize: {
4203 currValue = parseFillSize(propId, allowComma);
4204 if (currValue)
4205 m_valueList->next();
4206 break;
4207 }
4208 case CSSPropertyMaskSourceType: {
4209 if (RuntimeEnabledFeatures::cssMaskSourceTypeEnabled()) {
4210 if (val->id == CSSValueAuto || val->id == CSSValueAlpha || val->id == CSSValueLuminance) {
4211 currValue = cssValuePool().createIdentifierValue(val ->id);
4212 m_valueList->next();
4213 } else {
4214 currValue = 0;
4215 }
4216 }
4217 break;
4218 }
4219 default:
4220 break;
4221 }
4222 if (!currValue)
4223 return false;
4224
4225 if (value && !values) {
4226 values = CSSValueList::createCommaSeparated();
4227 values->append(value.release());
4228 }
4229
4230 if (value2 && !values2) {
4231 values2 = CSSValueList::createCommaSeparated();
4232 values2->append(value2.release());
4233 }
4234
4235 if (values)
4236 values->append(currValue.release());
4237 else
4238 value = currValue.release();
4239 if (currValue2) {
4240 if (values2)
4241 values2->append(currValue2.release());
4242 else
4243 value2 = currValue2.release();
4244 }
4245 }
4246
4247 // When parsing any fill shorthand property, we let it handle building u p the lists for all
4248 // properties.
4249 if (inShorthand())
4250 break;
4251 }
4252
4253 if (values && values->length()) {
4254 retValue1 = values.release();
4255 if (values2 && values2->length())
4256 retValue2 = values2.release();
4257 return true;
4258 }
4259 if (value) {
4260 retValue1 = value.release();
4261 retValue2 = value2.release();
4262 return true;
4263 }
4264 return false;
4265 }
4266
4267 PassRefPtr<CSSValue> CSSParser::parseAnimationDelay()
4268 {
4269 CSSParserValue* value = m_valueList->current();
4270 if (validUnit(value, FTime))
4271 return createPrimitiveNumericValue(value);
4272 return 0;
4273 }
4274
4275 PassRefPtr<CSSValue> CSSParser::parseAnimationDirection()
4276 {
4277 CSSParserValue* value = m_valueList->current();
4278 if (value->id == CSSValueNormal || value->id == CSSValueAlternate || value-> id == CSSValueReverse || value->id == CSSValueAlternateReverse)
4279 return cssValuePool().createIdentifierValue(value->id);
4280 return 0;
4281 }
4282
4283 PassRefPtr<CSSValue> CSSParser::parseAnimationDuration()
4284 {
4285 CSSParserValue* value = m_valueList->current();
4286 if (validUnit(value, FTime | FNonNeg))
4287 return createPrimitiveNumericValue(value);
4288 return 0;
4289 }
4290
4291 PassRefPtr<CSSValue> CSSParser::parseAnimationFillMode()
4292 {
4293 CSSParserValue* value = m_valueList->current();
4294 if (value->id == CSSValueNone || value->id == CSSValueForwards || value->id == CSSValueBackwards || value->id == CSSValueBoth)
4295 return cssValuePool().createIdentifierValue(value->id);
4296 return 0;
4297 }
4298
4299 PassRefPtr<CSSValue> CSSParser::parseAnimationIterationCount()
4300 {
4301 CSSParserValue* value = m_valueList->current();
4302 if (value->id == CSSValueInfinite)
4303 return cssValuePool().createIdentifierValue(value->id);
4304 if (validUnit(value, FNumber | FNonNeg))
4305 return createPrimitiveNumericValue(value);
4306 return 0;
4307 }
4308
4309 PassRefPtr<CSSValue> CSSParser::parseAnimationName()
4310 {
4311 CSSParserValue* value = m_valueList->current();
4312 if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimit iveValue::CSS_IDENT) {
4313 if (value->id == CSSValueNone || (value->unit == CSSPrimitiveValue::CSS_ STRING && equalIgnoringCase(value, "none"))) {
4314 return cssValuePool().createIdentifierValue(CSSValueNone);
4315 } else {
4316 return createPrimitiveStringValue(value);
4317 }
4318 }
4319 return 0;
4320 }
4321
4322 PassRefPtr<CSSValue> CSSParser::parseAnimationPlayState()
4323 {
4324 CSSParserValue* value = m_valueList->current();
4325 if (value->id == CSSValueRunning || value->id == CSSValuePaused)
4326 return cssValuePool().createIdentifierValue(value->id);
4327 return 0;
4328 }
4329
4330 PassRefPtr<CSSValue> CSSParser::parseAnimationProperty(AnimationParseContext& co ntext)
4331 {
4332 CSSParserValue* value = m_valueList->current();
4333 if (value->unit != CSSPrimitiveValue::CSS_IDENT)
4334 return 0;
4335 CSSPropertyID result = cssPropertyID(value->string);
4336 if (result)
4337 return cssValuePool().createIdentifierValue(result);
4338 if (equalIgnoringCase(value, "all")) {
4339 context.sawAnimationPropertyKeyword();
4340 return cssValuePool().createIdentifierValue(CSSValueAll);
4341 }
4342 if (equalIgnoringCase(value, "none")) {
4343 context.commitAnimationPropertyKeyword();
4344 context.sawAnimationPropertyKeyword();
4345 return cssValuePool().createIdentifierValue(CSSValueNone);
4346 }
4347 return 0;
4348 }
4349
4350 bool CSSParser::parseTransformOriginShorthand(RefPtr<CSSValue>& value1, RefPtr<C SSValue>& value2, RefPtr<CSSValue>& value3)
4351 {
4352 parse2ValuesFillPosition(m_valueList.get(), value1, value2);
4353
4354 // now get z
4355 if (m_valueList->current()) {
4356 if (validUnit(m_valueList->current(), FLength)) {
4357 value3 = createPrimitiveNumericValue(m_valueList->current());
4358 m_valueList->next();
4359 return true;
4360 }
4361 return false;
4362 }
4363 value3 = cssValuePool().createImplicitInitialValue();
4364 return true;
4365 }
4366
4367 bool CSSParser::parseCubicBezierTimingFunctionValue(CSSParserValueList*& args, d ouble& result)
4368 {
4369 CSSParserValue* v = args->current();
4370 if (!validUnit(v, FNumber))
4371 return false;
4372 result = v->fValue;
4373 v = args->next();
4374 if (!v)
4375 // The last number in the function has no comma after it, so we're done.
4376 return true;
4377 if (!isComma(v))
4378 return false;
4379 args->next();
4380 return true;
4381 }
4382
4383 PassRefPtr<CSSValue> CSSParser::parseAnimationTimingFunction()
4384 {
4385 CSSParserValue* value = m_valueList->current();
4386 if (value->id == CSSValueEase || value->id == CSSValueLinear || value->id == CSSValueEaseIn || value->id == CSSValueEaseOut
4387 || value->id == CSSValueEaseInOut || value->id == CSSValueStepStart || v alue->id == CSSValueStepEnd)
4388 return cssValuePool().createIdentifierValue(value->id);
4389
4390 // We must be a function.
4391 if (value->unit != CSSParserValue::Function)
4392 return 0;
4393
4394 CSSParserValueList* args = value->function->args.get();
4395
4396 if (equalIgnoringCase(value->function->name, "steps(")) {
4397 // For steps, 1 or 2 params must be specified (comma-separated)
4398 if (!args || (args->size() != 1 && args->size() != 3))
4399 return 0;
4400
4401 // There are two values.
4402 int numSteps;
4403 bool stepAtStart = false;
4404
4405 CSSParserValue* v = args->current();
4406 if (!validUnit(v, FInteger))
4407 return 0;
4408 numSteps = clampToInteger(v->fValue);
4409 if (numSteps < 1)
4410 return 0;
4411 v = args->next();
4412
4413 if (v) {
4414 // There is a comma so we need to parse the second value
4415 if (!isComma(v))
4416 return 0;
4417 v = args->next();
4418 if (v->id != CSSValueStart && v->id != CSSValueEnd)
4419 return 0;
4420 stepAtStart = v->id == CSSValueStart;
4421 }
4422
4423 return CSSStepsTimingFunctionValue::create(numSteps, stepAtStart);
4424 }
4425
4426 if (equalIgnoringCase(value->function->name, "cubic-bezier(")) {
4427 // For cubic bezier, 4 values must be specified.
4428 if (!args || args->size() != 7)
4429 return 0;
4430
4431 // There are two points specified. The x values must be between 0 and 1 but the y values can exceed this range.
4432 double x1, y1, x2, y2;
4433
4434 if (!parseCubicBezierTimingFunctionValue(args, x1))
4435 return 0;
4436 if (x1 < 0 || x1 > 1)
4437 return 0;
4438 if (!parseCubicBezierTimingFunctionValue(args, y1))
4439 return 0;
4440 if (!parseCubicBezierTimingFunctionValue(args, x2))
4441 return 0;
4442 if (x2 < 0 || x2 > 1)
4443 return 0;
4444 if (!parseCubicBezierTimingFunctionValue(args, y2))
4445 return 0;
4446
4447 return CSSCubicBezierTimingFunctionValue::create(x1, y1, x2, y2);
4448 }
4449
4450 return 0;
4451 }
4452
4453 bool CSSParser::parseAnimationProperty(CSSPropertyID propId, RefPtr<CSSValue>& r esult, AnimationParseContext& context)
4454 {
4455 RefPtr<CSSValueList> values;
4456 CSSParserValue* val;
4457 RefPtr<CSSValue> value;
4458 bool allowComma = false;
4459
4460 result = 0;
4461
4462 while ((val = m_valueList->current())) {
4463 RefPtr<CSSValue> currValue;
4464 if (allowComma) {
4465 if (!isComma(val))
4466 return false;
4467 m_valueList->next();
4468 allowComma = false;
4469 }
4470 else {
4471 switch (propId) {
4472 case CSSPropertyAnimationDelay:
4473 case CSSPropertyWebkitAnimationDelay:
4474 case CSSPropertyTransitionDelay:
4475 case CSSPropertyWebkitTransitionDelay:
4476 currValue = parseAnimationDelay();
4477 if (currValue)
4478 m_valueList->next();
4479 break;
4480 case CSSPropertyAnimationDirection:
4481 case CSSPropertyWebkitAnimationDirection:
4482 currValue = parseAnimationDirection();
4483 if (currValue)
4484 m_valueList->next();
4485 break;
4486 case CSSPropertyAnimationDuration:
4487 case CSSPropertyWebkitAnimationDuration:
4488 case CSSPropertyTransitionDuration:
4489 case CSSPropertyWebkitTransitionDuration:
4490 currValue = parseAnimationDuration();
4491 if (currValue)
4492 m_valueList->next();
4493 break;
4494 case CSSPropertyAnimationFillMode:
4495 case CSSPropertyWebkitAnimationFillMode:
4496 currValue = parseAnimationFillMode();
4497 if (currValue)
4498 m_valueList->next();
4499 break;
4500 case CSSPropertyAnimationIterationCount:
4501 case CSSPropertyWebkitAnimationIterationCount:
4502 currValue = parseAnimationIterationCount();
4503 if (currValue)
4504 m_valueList->next();
4505 break;
4506 case CSSPropertyAnimationName:
4507 case CSSPropertyWebkitAnimationName:
4508 currValue = parseAnimationName();
4509 if (currValue)
4510 m_valueList->next();
4511 break;
4512 case CSSPropertyAnimationPlayState:
4513 case CSSPropertyWebkitAnimationPlayState:
4514 currValue = parseAnimationPlayState();
4515 if (currValue)
4516 m_valueList->next();
4517 break;
4518 case CSSPropertyTransitionProperty:
4519 case CSSPropertyWebkitTransitionProperty:
4520 currValue = parseAnimationProperty(context);
4521 if (value && !context.animationPropertyKeywordAllowed())
4522 return false;
4523 if (currValue)
4524 m_valueList->next();
4525 break;
4526 case CSSPropertyAnimationTimingFunction:
4527 case CSSPropertyWebkitAnimationTimingFunction:
4528 case CSSPropertyTransitionTimingFunction:
4529 case CSSPropertyWebkitTransitionTimingFunction:
4530 currValue = parseAnimationTimingFunction();
4531 if (currValue)
4532 m_valueList->next();
4533 break;
4534 default:
4535 ASSERT_NOT_REACHED();
4536 return false;
4537 }
4538
4539 if (!currValue)
4540 return false;
4541
4542 if (value && !values) {
4543 values = CSSValueList::createCommaSeparated();
4544 values->append(value.release());
4545 }
4546
4547 if (values)
4548 values->append(currValue.release());
4549 else
4550 value = currValue.release();
4551
4552 allowComma = true;
4553 }
4554
4555 // When parsing the 'transition' shorthand property, we let it handle bu ilding up the lists for all
4556 // properties.
4557 if (inShorthand())
4558 break;
4559 }
4560
4561 if (values && values->length()) {
4562 result = values.release();
4563 return true;
4564 }
4565 if (value) {
4566 result = value.release();
4567 return true;
4568 }
4569 return false;
4570 }
4571
4572 // The function parses [ <integer> || <string> ] in <grid-line> (which can be st and alone or with 'span').
4573 bool CSSParser::parseIntegerOrStringFromGridPosition(RefPtr<CSSPrimitiveValue>& numericValue, RefPtr<CSSPrimitiveValue>& gridLineName)
4574 {
4575 CSSParserValue* value = m_valueList->current();
4576 if (validUnit(value, FInteger) && value->fValue) {
4577 numericValue = createPrimitiveNumericValue(value);
4578 value = m_valueList->next();
4579 if (value && value->unit == CSSPrimitiveValue::CSS_STRING) {
4580 gridLineName = createPrimitiveStringValue(m_valueList->current());
4581 m_valueList->next();
4582 }
4583 return true;
4584 }
4585
4586 if (value->unit == CSSPrimitiveValue::CSS_STRING) {
4587 gridLineName = createPrimitiveStringValue(m_valueList->current());
4588 value = m_valueList->next();
4589 if (value && validUnit(value, FInteger) && value->fValue) {
4590 numericValue = createPrimitiveNumericValue(value);
4591 m_valueList->next();
4592 }
4593 return true;
4594 }
4595
4596 return false;
4597 }
4598
4599 PassRefPtr<CSSValue> CSSParser::parseGridPosition()
4600 {
4601 ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
4602
4603 CSSParserValue* value = m_valueList->current();
4604 if (value->id == CSSValueAuto) {
4605 m_valueList->next();
4606 return cssValuePool().createIdentifierValue(CSSValueAuto);
4607 }
4608
4609 if (value->id != CSSValueSpan && value->unit == CSSPrimitiveValue::CSS_IDENT ) {
4610 m_valueList->next();
4611 return cssValuePool().createValue(value->string, CSSPrimitiveValue::CSS_ STRING);
4612 }
4613
4614 RefPtr<CSSPrimitiveValue> numericValue;
4615 RefPtr<CSSPrimitiveValue> gridLineName;
4616 bool hasSeenSpanKeyword = false;
4617
4618 if (parseIntegerOrStringFromGridPosition(numericValue, gridLineName)) {
4619 value = m_valueList->current();
4620 if (value && value->id == CSSValueSpan) {
4621 hasSeenSpanKeyword = true;
4622 m_valueList->next();
4623 }
4624 } else if (value->id == CSSValueSpan) {
4625 hasSeenSpanKeyword = true;
4626 if (m_valueList->next())
4627 parseIntegerOrStringFromGridPosition(numericValue, gridLineName);
4628 }
4629
4630 // Check that we have consumed all the value list. For shorthands, the parse r will pass
4631 // the whole value list (including the opposite position).
4632 if (m_valueList->current() && !isForwardSlashOperator(m_valueList->current() ))
4633 return 0;
4634
4635 // If we didn't parse anything, this is not a valid grid position.
4636 if (!hasSeenSpanKeyword && !gridLineName && !numericValue)
4637 return 0;
4638
4639 // Negative numbers are not allowed for span (but are for <integer>).
4640 if (hasSeenSpanKeyword && numericValue && numericValue->getIntValue() < 0)
4641 return 0;
4642
4643 RefPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
4644 if (hasSeenSpanKeyword)
4645 values->append(cssValuePool().createIdentifierValue(CSSValueSpan));
4646 if (numericValue)
4647 values->append(numericValue.release());
4648 if (gridLineName)
4649 values->append(gridLineName.release());
4650 ASSERT(values->length());
4651 return values.release();
4652 }
4653
4654 static PassRefPtr<CSSValue> gridMissingGridPositionValue(CSSValue* value)
4655 {
4656 if (value->isPrimitiveValue() && toCSSPrimitiveValue(value)->isString())
4657 return value;
4658
4659 return cssValuePool().createIdentifierValue(CSSValueAuto);
4660 }
4661
4662 bool CSSParser::parseGridItemPositionShorthand(CSSPropertyID shorthandId, bool i mportant)
4663 {
4664 ShorthandScope scope(this, shorthandId);
4665 const StylePropertyShorthand& shorthand = shorthandForProperty(shorthandId);
4666 ASSERT(shorthand.length() == 2);
4667
4668 RefPtr<CSSValue> startValue = parseGridPosition();
4669 if (!startValue)
4670 return false;
4671
4672 RefPtr<CSSValue> endValue;
4673 if (m_valueList->current()) {
4674 if (!isForwardSlashOperator(m_valueList->current()))
4675 return false;
4676
4677 if (!m_valueList->next())
4678 return false;
4679
4680 endValue = parseGridPosition();
4681 if (!endValue || m_valueList->current())
4682 return false;
4683 } else {
4684 endValue = gridMissingGridPositionValue(startValue.get());
4685 }
4686
4687 addProperty(shorthand.properties()[0], startValue, important);
4688 addProperty(shorthand.properties()[1], endValue, important);
4689 return true;
4690 }
4691
4692 bool CSSParser::parseGridAreaShorthand(bool important)
4693 {
4694 ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
4695
4696 ShorthandScope scope(this, CSSPropertyGridArea);
4697 const StylePropertyShorthand& shorthand = gridAreaShorthand();
4698 ASSERT_UNUSED(shorthand, shorthand.length() == 4);
4699
4700 RefPtr<CSSValue> rowStartValue = parseGridPosition();
4701 if (!rowStartValue)
4702 return false;
4703
4704 RefPtr<CSSValue> columnStartValue;
4705 if (!parseSingleGridAreaLonghand(columnStartValue))
4706 return false;
4707
4708 RefPtr<CSSValue> rowEndValue;
4709 if (!parseSingleGridAreaLonghand(rowEndValue))
4710 return false;
4711
4712 RefPtr<CSSValue> columnEndValue;
4713 if (!parseSingleGridAreaLonghand(columnEndValue))
4714 return false;
4715
4716 if (!columnStartValue)
4717 columnStartValue = gridMissingGridPositionValue(rowStartValue.get());
4718
4719 if (!rowEndValue)
4720 rowEndValue = gridMissingGridPositionValue(rowStartValue.get());
4721
4722 if (!columnEndValue)
4723 columnEndValue = gridMissingGridPositionValue(columnStartValue.get());
4724
4725 addProperty(CSSPropertyGridRowStart, rowStartValue, important);
4726 addProperty(CSSPropertyGridColumnStart, columnStartValue, important);
4727 addProperty(CSSPropertyGridRowEnd, rowEndValue, important);
4728 addProperty(CSSPropertyGridColumnEnd, columnEndValue, important);
4729 return true;
4730 }
4731
4732 bool CSSParser::parseSingleGridAreaLonghand(RefPtr<CSSValue>& property)
4733 {
4734 if (!m_valueList->current())
4735 return true;
4736
4737 if (!isForwardSlashOperator(m_valueList->current()))
4738 return false;
4739
4740 if (!m_valueList->next())
4741 return false;
4742
4743 property = parseGridPosition();
4744 return true;
4745 }
4746
4747 void CSSParser::parseGridLineNames(CSSParserValueList* parserValueList, CSSValue List& valueList)
4748 {
4749 ASSERT(parserValueList->current() && parserValueList->current()->unit == CSS ParserValue::ValueList);
4750
4751 CSSParserValueList* identList = parserValueList->current()->valueList;
4752 if (!identList->size()) {
4753 parserValueList->next();
4754 return;
4755 }
4756
4757 RefPtr<CSSGridLineNamesValue> lineNames = CSSGridLineNamesValue::create();
4758 while (CSSParserValue* identValue = identList->current()) {
4759 ASSERT(identValue->unit == CSSPrimitiveValue::CSS_IDENT);
4760 RefPtr<CSSPrimitiveValue> lineName = createPrimitiveStringValue(identVal ue);
4761 lineNames->append(lineName.release());
4762 identList->next();
4763 }
4764 valueList.append(lineNames.release());
4765
4766 parserValueList->next();
4767 }
4768
4769 bool CSSParser::parseGridTrackList(CSSPropertyID propId, bool important)
4770 {
4771 ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
4772
4773 CSSParserValue* value = m_valueList->current();
4774 if (value->id == CSSValueNone) {
4775 if (m_valueList->next())
4776 return false;
4777
4778 addProperty(propId, cssValuePool().createIdentifierValue(value->id), imp ortant);
4779 return true;
4780 }
4781
4782 RefPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
4783 // Handle leading <ident>*.
4784 value = m_valueList->current();
4785 if (value && value->unit == CSSParserValue::ValueList)
4786 parseGridLineNames(m_valueList.get(), *values);
4787
4788 bool seenTrackSizeOrRepeatFunction = false;
4789 while (CSSParserValue* currentValue = m_valueList->current()) {
4790 if (currentValue->unit == CSSParserValue::Function && equalIgnoringCase( currentValue->function->name, "repeat(")) {
4791 if (!parseGridTrackRepeatFunction(*values))
4792 return false;
4793 seenTrackSizeOrRepeatFunction = true;
4794 } else {
4795 RefPtr<CSSValue> value = parseGridTrackSize(*m_valueList);
4796 if (!value)
4797 return false;
4798 values->append(value);
4799 seenTrackSizeOrRepeatFunction = true;
4800 }
4801 // This will handle the trailing <ident>* in the grammar.
4802 value = m_valueList->current();
4803 if (value && value->unit == CSSParserValue::ValueList)
4804 parseGridLineNames(m_valueList.get(), *values);
4805 }
4806
4807 // We should have found a <track-size> or else it is not a valid <track-list >
4808 if (!seenTrackSizeOrRepeatFunction)
4809 return false;
4810
4811 addProperty(propId, values.release(), important);
4812 return true;
4813 }
4814
4815 bool CSSParser::parseGridTrackRepeatFunction(CSSValueList& list)
4816 {
4817 CSSParserValueList* arguments = m_valueList->current()->function->args.get() ;
4818 if (!arguments || arguments->size() < 3 || !validUnit(arguments->valueAt(0), FPositiveInteger) || !isComma(arguments->valueAt(1)))
4819 return false;
4820
4821 ASSERT_WITH_SECURITY_IMPLICATION(arguments->valueAt(0)->fValue > 0);
4822 size_t repetitions = arguments->valueAt(0)->fValue;
4823 RefPtr<CSSValueList> repeatedValues = CSSValueList::createSpaceSeparated();
4824 arguments->next(); // Skip the repetition count.
4825 arguments->next(); // Skip the comma.
4826
4827 // Handle leading <ident>*.
4828 CSSParserValue* currentValue = arguments->current();
4829 if (currentValue && currentValue->unit == CSSParserValue::ValueList)
4830 parseGridLineNames(arguments, *repeatedValues);
4831
4832 while (arguments->current()) {
4833 RefPtr<CSSValue> trackSize = parseGridTrackSize(*arguments);
4834 if (!trackSize)
4835 return false;
4836
4837 repeatedValues->append(trackSize);
4838
4839 // This takes care of any trailing <ident>* in the grammar.
4840 currentValue = arguments->current();
4841 if (currentValue && currentValue->unit == CSSParserValue::ValueList)
4842 parseGridLineNames(arguments, *repeatedValues);
4843 }
4844
4845 for (size_t i = 0; i < repetitions; ++i) {
4846 for (size_t j = 0; j < repeatedValues->length(); ++j)
4847 list.append(repeatedValues->itemWithoutBoundsCheck(j));
4848 }
4849
4850 // parseGridTrackSize iterated over the repeat arguments, move to the next v alue.
4851 m_valueList->next();
4852 return true;
4853 }
4854
4855 PassRefPtr<CSSValue> CSSParser::parseGridTrackSize(CSSParserValueList& inputList )
4856 {
4857 ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
4858
4859 CSSParserValue* currentValue = inputList.current();
4860 inputList.next();
4861
4862 if (currentValue->id == CSSValueAuto)
4863 return cssValuePool().createIdentifierValue(CSSValueAuto);
4864
4865 if (currentValue->unit == CSSParserValue::Function && equalIgnoringCase(curr entValue->function->name, "minmax(")) {
4866 // The spec defines the following grammar: minmax( <track-breadth> , <tr ack-breadth> )
4867 CSSParserValueList* arguments = currentValue->function->args.get();
4868 if (!arguments || arguments->size() != 3 || !isComma(arguments->valueAt( 1)))
4869 return 0;
4870
4871 RefPtr<CSSPrimitiveValue> minTrackBreadth = parseGridBreadth(arguments-> valueAt(0));
4872 if (!minTrackBreadth)
4873 return 0;
4874
4875 RefPtr<CSSPrimitiveValue> maxTrackBreadth = parseGridBreadth(arguments-> valueAt(2));
4876 if (!maxTrackBreadth)
4877 return 0;
4878
4879 RefPtr<CSSValueList> parsedArguments = CSSValueList::createCommaSeparate d();
4880 parsedArguments->append(minTrackBreadth);
4881 parsedArguments->append(maxTrackBreadth);
4882 return CSSFunctionValue::create("minmax(", parsedArguments);
4883 }
4884
4885 return parseGridBreadth(currentValue);
4886 }
4887
4888 PassRefPtr<CSSPrimitiveValue> CSSParser::parseGridBreadth(CSSParserValue* curren tValue)
4889 {
4890 if (currentValue->id == CSSValueMinContent || currentValue->id == CSSValueMa xContent)
4891 return cssValuePool().createIdentifierValue(currentValue->id);
4892
4893 if (currentValue->unit == CSSPrimitiveValue::CSS_FR) {
4894 double flexValue = currentValue->fValue;
4895
4896 // Fractional unit is a non-negative dimension.
4897 if (flexValue <= 0)
4898 return 0;
4899
4900 return cssValuePool().createValue(flexValue, CSSPrimitiveValue::CSS_FR);
4901 }
4902
4903 if (!validUnit(currentValue, FNonNeg | FLength | FPercent))
4904 return 0;
4905
4906 return createPrimitiveNumericValue(currentValue);
4907 }
4908
4909 PassRefPtr<CSSValue> CSSParser::parseGridTemplate()
4910 {
4911 NamedGridAreaMap gridAreaMap;
4912 size_t rowCount = 0;
4913 size_t columnCount = 0;
4914
4915 while (CSSParserValue* currentValue = m_valueList->current()) {
4916 if (currentValue->unit != CSSPrimitiveValue::CSS_STRING)
4917 return 0;
4918
4919 String gridRowNames = currentValue->string;
4920 if (!gridRowNames.length())
4921 return 0;
4922
4923 Vector<String> columnNames;
4924 gridRowNames.split(' ', columnNames);
4925
4926 if (!columnCount) {
4927 columnCount = columnNames.size();
4928 ASSERT(columnCount);
4929 } else if (columnCount != columnNames.size()) {
4930 // The declaration is invalid is all the rows don't have the number of columns.
4931 return 0;
4932 }
4933
4934 for (size_t currentCol = 0; currentCol < columnCount; ++currentCol) {
4935 const String& gridAreaName = columnNames[currentCol];
4936
4937 // Unamed areas are always valid (we consider them to be 1x1).
4938 if (gridAreaName == ".")
4939 continue;
4940
4941 // We handle several grid areas with the same name at once to simpli fy the validation code.
4942 size_t lookAheadCol;
4943 for (lookAheadCol = currentCol; lookAheadCol < (columnCount - 1); ++ lookAheadCol) {
4944 if (columnNames[lookAheadCol + 1] != gridAreaName)
4945 break;
4946 }
4947
4948 NamedGridAreaMap::iterator gridAreaIt = gridAreaMap.find(gridAreaNam e);
4949 if (gridAreaIt == gridAreaMap.end()) {
4950 gridAreaMap.add(gridAreaName, GridCoordinate(GridSpan(rowCount, rowCount), GridSpan(currentCol, lookAheadCol)));
4951 } else {
4952 GridCoordinate& gridCoordinate = gridAreaIt->value;
4953
4954 // The following checks test that the grid area is a single fill ed-in rectangle.
4955 // 1. The new row is adjacent to the previously parsed row.
4956 if (rowCount != gridCoordinate.rows.initialPositionIndex + 1)
4957 return 0;
4958
4959 // 2. The new area starts at the same position as the previously parsed area.
4960 if (currentCol != gridCoordinate.columns.initialPositionIndex)
4961 return 0;
4962
4963 // 3. The new area ends at the same position as the previously p arsed area.
4964 if (lookAheadCol != gridCoordinate.columns.finalPositionIndex)
4965 return 0;
4966
4967 ++gridCoordinate.rows.finalPositionIndex;
4968 }
4969 currentCol = lookAheadCol;
4970 }
4971
4972 ++rowCount;
4973 m_valueList->next();
4974 }
4975
4976 if (!rowCount || !columnCount)
4977 return 0;
4978
4979 return CSSGridTemplateValue::create(gridAreaMap, rowCount, columnCount);
4980 }
4981
4982 PassRefPtr<CSSValue> CSSParser::parseCounterContent(CSSParserValueList* args, bo ol counters)
4983 {
4984 unsigned numArgs = args->size();
4985 if (counters && numArgs != 3 && numArgs != 5)
4986 return 0;
4987 if (!counters && numArgs != 1 && numArgs != 3)
4988 return 0;
4989
4990 CSSParserValue* i = args->current();
4991 if (i->unit != CSSPrimitiveValue::CSS_IDENT)
4992 return 0;
4993 RefPtr<CSSPrimitiveValue> identifier = createPrimitiveStringValue(i);
4994
4995 RefPtr<CSSPrimitiveValue> separator;
4996 if (!counters)
4997 separator = cssValuePool().createValue(String(), CSSPrimitiveValue::CSS_ STRING);
4998 else {
4999 i = args->next();
5000 if (i->unit != CSSParserValue::Operator || i->iValue != ',')
5001 return 0;
5002
5003 i = args->next();
5004 if (i->unit != CSSPrimitiveValue::CSS_STRING)
5005 return 0;
5006
5007 separator = createPrimitiveStringValue(i);
5008 }
5009
5010 RefPtr<CSSPrimitiveValue> listStyle;
5011 i = args->next();
5012 if (!i) // Make the list style default decimal
5013 listStyle = cssValuePool().createIdentifierValue(CSSValueDecimal);
5014 else {
5015 if (i->unit != CSSParserValue::Operator || i->iValue != ',')
5016 return 0;
5017
5018 i = args->next();
5019 if (i->unit != CSSPrimitiveValue::CSS_IDENT)
5020 return 0;
5021
5022 CSSValueID listStyleID = CSSValueInvalid;
5023 if (i->id == CSSValueNone || (i->id >= CSSValueDisc && i->id <= CSSValue KatakanaIroha))
5024 listStyleID = i->id;
5025 else
5026 return 0;
5027
5028 listStyle = cssValuePool().createIdentifierValue(listStyleID);
5029 }
5030
5031 return cssValuePool().createValue(Counter::create(identifier.release(), list Style.release(), separator.release()));
5032 }
5033
5034 bool CSSParser::parseClipShape(CSSPropertyID propId, bool important)
5035 {
5036 CSSParserValue* value = m_valueList->current();
5037 CSSParserValueList* args = value->function->args.get();
5038
5039 if (!equalIgnoringCase(value->function->name, "rect(") || !args)
5040 return false;
5041
5042 // rect(t, r, b, l) || rect(t r b l)
5043 if (args->size() != 4 && args->size() != 7)
5044 return false;
5045 RefPtr<Rect> rect = Rect::create();
5046 bool valid = true;
5047 int i = 0;
5048 CSSParserValue* a = args->current();
5049 while (a) {
5050 valid = a->id == CSSValueAuto || validUnit(a, FLength);
5051 if (!valid)
5052 break;
5053 RefPtr<CSSPrimitiveValue> length = a->id == CSSValueAuto ?
5054 cssValuePool().createIdentifierValue(CSSValueAuto) :
5055 createPrimitiveNumericValue(a);
5056 if (i == 0)
5057 rect->setTop(length);
5058 else if (i == 1)
5059 rect->setRight(length);
5060 else if (i == 2)
5061 rect->setBottom(length);
5062 else
5063 rect->setLeft(length);
5064 a = args->next();
5065 if (a && args->size() == 7) {
5066 if (a->unit == CSSParserValue::Operator && a->iValue == ',') {
5067 a = args->next();
5068 } else {
5069 valid = false;
5070 break;
5071 }
5072 }
5073 i++;
5074 }
5075 if (valid) {
5076 addProperty(propId, cssValuePool().createValue(rect.release()), importan t);
5077 m_valueList->next();
5078 return true;
5079 }
5080 return false;
5081 }
5082
5083 PassRefPtr<CSSBasicShape> CSSParser::parseBasicShapeRectangle(CSSParserValueList * args)
5084 {
5085 ASSERT(args);
5086
5087 // rect(x, y, width, height, [[rx], ry])
5088 if (args->size() != 7 && args->size() != 9 && args->size() != 11)
5089 return 0;
5090
5091 RefPtr<CSSBasicShapeRectangle> shape = CSSBasicShapeRectangle::create();
5092
5093 unsigned argumentNumber = 0;
5094 CSSParserValue* argument = args->current();
5095 while (argument) {
5096 Units unitFlags = FLength | FPercent;
5097 if (argumentNumber > 1) {
5098 // Arguments width, height, rx, and ry cannot be negative.
5099 unitFlags = unitFlags | FNonNeg;
5100 }
5101 if (!validUnit(argument, unitFlags))
5102 return 0;
5103
5104 RefPtr<CSSPrimitiveValue> length = createPrimitiveNumericValue(argument) ;
5105 ASSERT(argumentNumber < 6);
5106 switch (argumentNumber) {
5107 case 0:
5108 shape->setX(length);
5109 break;
5110 case 1:
5111 shape->setY(length);
5112 break;
5113 case 2:
5114 shape->setWidth(length);
5115 break;
5116 case 3:
5117 shape->setHeight(length);
5118 break;
5119 case 4:
5120 shape->setRadiusX(length);
5121 break;
5122 case 5:
5123 shape->setRadiusY(length);
5124 break;
5125 }
5126 argument = args->next();
5127 if (argument) {
5128 if (!isComma(argument))
5129 return 0;
5130
5131 argument = args->next();
5132 }
5133 argumentNumber++;
5134 }
5135
5136 if (argumentNumber < 4)
5137 return 0;
5138 return shape;
5139 }
5140
5141 PassRefPtr<CSSBasicShape> CSSParser::parseBasicShapeInsetRectangle(CSSParserValu eList* args)
5142 {
5143 ASSERT(args);
5144
5145 // inset-rectangle(top, right, bottom, left, [[rx], ry])
5146 if (args->size() != 7 && args->size() != 9 && args->size() != 11)
5147 return 0;
5148
5149 RefPtr<CSSBasicShapeInsetRectangle> shape = CSSBasicShapeInsetRectangle::cre ate();
5150
5151 unsigned argumentNumber = 0;
5152 CSSParserValue* argument = args->current();
5153 while (argument) {
5154 Units unitFlags = FLength | FPercent | FNonNeg;
5155 if (!validUnit(argument, unitFlags))
5156 return 0;
5157
5158 RefPtr<CSSPrimitiveValue> length = createPrimitiveNumericValue(argument) ;
5159 ASSERT(argumentNumber < 6);
5160 switch (argumentNumber) {
5161 case 0:
5162 shape->setTop(length);
5163 break;
5164 case 1:
5165 shape->setRight(length);
5166 break;
5167 case 2:
5168 shape->setBottom(length);
5169 break;
5170 case 3:
5171 shape->setLeft(length);
5172 break;
5173 case 4:
5174 shape->setRadiusX(length);
5175 break;
5176 case 5:
5177 shape->setRadiusY(length);
5178 break;
5179 }
5180 argument = args->next();
5181 if (argument) {
5182 if (!isComma(argument))
5183 return 0;
5184
5185 argument = args->next();
5186 }
5187 argumentNumber++;
5188 }
5189
5190 if (argumentNumber < 4)
5191 return 0;
5192 return shape;
5193 }
5194
5195 PassRefPtr<CSSPrimitiveValue> CSSParser::parseShapeRadius(CSSParserValue* value)
5196 {
5197 if (value->id == CSSValueClosestSide || value->id == CSSValueFarthestSide)
5198 return cssValuePool().createIdentifierValue(value->id);
5199
5200 if (!validUnit(value, FLength | FPercent | FNonNeg))
5201 return 0;
5202
5203 return createPrimitiveNumericValue(value);
5204 }
5205
5206 PassRefPtr<CSSBasicShape> CSSParser::parseBasicShapeCircle(CSSParserValueList* a rgs)
5207 {
5208 ASSERT(args);
5209
5210 // circle(radius)
5211 // circle(radius at <position>
5212 // circle(at <position>)
5213 // where position defines centerX and centerY using a CSS <position> data ty pe.
5214 RefPtr<CSSBasicShapeCircle> shape = CSSBasicShapeCircle::create();
5215
5216 for (CSSParserValue* argument = args->current(); argument; argument = args-> next()) {
5217 // The call to parseFillPosition below should consume all of the
5218 // arguments except the first two. Thus, and index greater than one
5219 // indicates an invalid production.
5220 if (args->currentIndex() > 1)
5221 return 0;
5222
5223 if (!args->currentIndex() && argument->id != CSSValueAt) {
5224 if (RefPtr<CSSPrimitiveValue> radius = parseShapeRadius(argument)) {
5225 shape->setRadius(radius);
5226 continue;
5227 }
5228
5229 return 0;
5230 }
5231
5232 if (argument->id == CSSValueAt) {
5233 RefPtr<CSSValue> centerX;
5234 RefPtr<CSSValue> centerY;
5235 args->next(); // set list to start of position center
5236 parseFillPosition(args, centerX, centerY);
5237 if (centerX && centerY) {
5238 ASSERT(centerX->isPrimitiveValue());
5239 ASSERT(centerY->isPrimitiveValue());
5240 shape->setCenterX(toCSSPrimitiveValue(centerX.get()));
5241 shape->setCenterY(toCSSPrimitiveValue(centerY.get()));
5242 } else {
5243 return 0;
5244 }
5245 } else {
5246 return 0;
5247 }
5248 }
5249
5250 return shape;
5251 }
5252
5253 PassRefPtr<CSSBasicShape> CSSParser::parseDeprecatedBasicShapeCircle(CSSParserVa lueList* args)
5254 {
5255 ASSERT(args);
5256
5257 // circle(centerX, centerY, radius)
5258 if (args->size() != 5)
5259 return 0;
5260
5261 RefPtr<CSSDeprecatedBasicShapeCircle> shape = CSSDeprecatedBasicShapeCircle: :create();
5262
5263 unsigned argumentNumber = 0;
5264 CSSParserValue* argument = args->current();
5265 while (argument) {
5266 Units unitFlags = FLength | FPercent;
5267 if (argumentNumber == 2) {
5268 // Argument radius cannot be negative.
5269 unitFlags = unitFlags | FNonNeg;
5270 }
5271
5272 if (!validUnit(argument, unitFlags))
5273 return 0;
5274
5275 RefPtr<CSSPrimitiveValue> length = createPrimitiveNumericValue(argument) ;
5276 ASSERT(argumentNumber < 3);
5277 switch (argumentNumber) {
5278 case 0:
5279 shape->setCenterX(length);
5280 break;
5281 case 1:
5282 shape->setCenterY(length);
5283 break;
5284 case 2:
5285 shape->setRadius(length);
5286 break;
5287 }
5288
5289 argument = args->next();
5290 if (argument) {
5291 if (!isComma(argument))
5292 return 0;
5293 argument = args->next();
5294 }
5295 argumentNumber++;
5296 }
5297
5298 if (argumentNumber < 3)
5299 return 0;
5300 return shape;
5301 }
5302
5303 PassRefPtr<CSSBasicShape> CSSParser::parseBasicShapeEllipse(CSSParserValueList* args)
5304 {
5305 ASSERT(args);
5306
5307 // ellipse(centerX, centerY, radiusX, radiusY)
5308 if (args->size() != 7)
5309 return 0;
5310
5311 RefPtr<CSSBasicShapeEllipse> shape = CSSBasicShapeEllipse::create();
5312 unsigned argumentNumber = 0;
5313 CSSParserValue* argument = args->current();
5314 while (argument) {
5315 Units unitFlags = FLength | FPercent;
5316 if (argumentNumber > 1) {
5317 // Arguments radiusX and radiusY cannot be negative.
5318 unitFlags = unitFlags | FNonNeg;
5319 }
5320 if (!validUnit(argument, unitFlags))
5321 return 0;
5322
5323 RefPtr<CSSPrimitiveValue> length = createPrimitiveNumericValue(argument) ;
5324 ASSERT(argumentNumber < 4);
5325 switch (argumentNumber) {
5326 case 0:
5327 shape->setCenterX(length);
5328 break;
5329 case 1:
5330 shape->setCenterY(length);
5331 break;
5332 case 2:
5333 shape->setRadiusX(length);
5334 break;
5335 case 3:
5336 shape->setRadiusY(length);
5337 break;
5338 }
5339
5340 argument = args->next();
5341 if (argument) {
5342 if (!isComma(argument))
5343 return 0;
5344 argument = args->next();
5345 }
5346 argumentNumber++;
5347 }
5348
5349 if (argumentNumber < 4)
5350 return 0;
5351 return shape;
5352 }
5353
5354 PassRefPtr<CSSBasicShape> CSSParser::parseBasicShapePolygon(CSSParserValueList* args)
5355 {
5356 ASSERT(args);
5357
5358 unsigned size = args->size();
5359 if (!size)
5360 return 0;
5361
5362 RefPtr<CSSBasicShapePolygon> shape = CSSBasicShapePolygon::create();
5363
5364 CSSParserValue* argument = args->current();
5365 if (argument->id == CSSValueEvenodd || argument->id == CSSValueNonzero) {
5366 shape->setWindRule(argument->id == CSSValueEvenodd ? RULE_EVENODD : RULE _NONZERO);
5367
5368 if (!isComma(args->next()))
5369 return 0;
5370
5371 argument = args->next();
5372 size -= 2;
5373 }
5374
5375 // <length> <length>, ... <length> <length> -> each pair has 3 elements exce pt the last one
5376 if (!size || (size % 3) - 2)
5377 return 0;
5378
5379 CSSParserValue* argumentX = argument;
5380 while (argumentX) {
5381 if (!validUnit(argumentX, FLength | FPercent))
5382 return 0;
5383
5384 CSSParserValue* argumentY = args->next();
5385 if (!argumentY || !validUnit(argumentY, FLength | FPercent))
5386 return 0;
5387
5388 RefPtr<CSSPrimitiveValue> xLength = createPrimitiveNumericValue(argument X);
5389 RefPtr<CSSPrimitiveValue> yLength = createPrimitiveNumericValue(argument Y);
5390
5391 shape->appendPoint(xLength.release(), yLength.release());
5392
5393 CSSParserValue* commaOrNull = args->next();
5394 if (!commaOrNull)
5395 argumentX = 0;
5396 else if (!isComma(commaOrNull))
5397 return 0;
5398 else
5399 argumentX = args->next();
5400 }
5401
5402 return shape;
5403 }
5404
5405 static bool isBoxValue(CSSValueID valueId)
5406 {
5407 switch (valueId) {
5408 case CSSValueContentBox:
5409 case CSSValuePaddingBox:
5410 case CSSValueBorderBox:
5411 case CSSValueMarginBox:
5412 return true;
5413 default:
5414 break;
5415 }
5416
5417 return false;
5418 }
5419
5420 // FIXME This function is temporary to allow for an orderly transition between
5421 // the new CSS Shapes circle and ellipse syntax. It will be removed when the
5422 // old syntax is removed.
5423 static bool isDeprecatedBasicShape(CSSParserValueList* args)
5424 {
5425 for (unsigned i = args->currentIndex(); i < args->size(); ++i) {
5426 CSSParserValue* value = args->valueAt(i);
5427 if (isComma(value))
5428 return true;
5429 }
5430
5431 return false;
5432 }
5433
5434 PassRefPtr<CSSValue> CSSParser::parseShapeProperty(CSSPropertyID propId)
5435 {
5436 if (!RuntimeEnabledFeatures::cssShapesEnabled())
5437 return 0;
5438
5439 CSSParserValue* value = m_valueList->current();
5440 CSSValueID valueId = value->id;
5441 RefPtr<CSSPrimitiveValue> boxValue;
5442 RefPtr<CSSPrimitiveValue> shapeValue;
5443
5444 if (valueId == CSSValueAuto
5445 || (valueId == CSSValueOutsideShape && propId == CSSPropertyShapeInside) ) {
5446 RefPtr<CSSPrimitiveValue> keywordValue = parseValidPrimitive(valueId, va lue);
5447 m_valueList->next();
5448 return keywordValue.release();
5449 }
5450
5451 if (value->unit == CSSPrimitiveValue::CSS_URI) {
5452 RefPtr<CSSImageValue> imageValue = CSSImageValue::create(completeURL(val ue->string));
5453 m_valueList->next();
5454 return imageValue.release();
5455 }
5456
5457 if (value->unit == CSSParserValue::Function) {
5458 shapeValue = parseBasicShape();
5459 if (!shapeValue)
5460 return 0;
5461 } else if (isBoxValue(valueId)) {
5462 boxValue = parseValidPrimitive(valueId, value);
5463 m_valueList->next();
5464 } else {
5465 return 0;
5466 }
5467
5468 ASSERT(shapeValue || boxValue);
5469 value = m_valueList->current();
5470
5471 if (value) {
5472 valueId = value->id;
5473 if (boxValue && value->unit == CSSParserValue::Function) {
5474 shapeValue = parseBasicShape();
5475 if (!shapeValue)
5476 return 0;
5477 } else if (shapeValue && isBoxValue(valueId)) {
5478 boxValue = parseValidPrimitive(valueId, value);
5479 m_valueList->next();
5480 } else {
5481 return 0;
5482 }
5483
5484 ASSERT(shapeValue && boxValue);
5485 shapeValue->getShapeValue()->setLayoutBox(boxValue.release());
5486 }
5487
5488 if (shapeValue)
5489 return shapeValue.release();
5490 return boxValue.release();
5491 }
5492
5493 PassRefPtr<CSSPrimitiveValue> CSSParser::parseBasicShape()
5494 {
5495 CSSParserValue* value = m_valueList->current();
5496 ASSERT(value->unit == CSSParserValue::Function);
5497 CSSParserValueList* args = value->function->args.get();
5498
5499 if (!args)
5500 return 0;
5501
5502 RefPtr<CSSBasicShape> shape;
5503 if (equalIgnoringCase(value->function->name, "rectangle("))
5504 shape = parseBasicShapeRectangle(args);
5505 else if (equalIgnoringCase(value->function->name, "circle("))
5506 if (isDeprecatedBasicShape(args))
5507 shape = parseDeprecatedBasicShapeCircle(args);
5508 else
5509 shape = parseBasicShapeCircle(args);
5510 else if (equalIgnoringCase(value->function->name, "ellipse("))
5511 shape = parseBasicShapeEllipse(args);
5512 else if (equalIgnoringCase(value->function->name, "polygon("))
5513 shape = parseBasicShapePolygon(args);
5514 else if (equalIgnoringCase(value->function->name, "inset-rectangle("))
5515 shape = parseBasicShapeInsetRectangle(args);
5516
5517 if (!shape)
5518 return 0;
5519
5520 m_valueList->next();
5521 return cssValuePool().createValue(shape.release());
5522 }
5523
5524 // [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-he ight' ]? 'font-family'
5525 bool CSSParser::parseFont(bool important)
5526 {
5527 // Let's check if there is an inherit or initial somewhere in the shorthand.
5528 for (unsigned i = 0; i < m_valueList->size(); ++i) {
5529 if (m_valueList->valueAt(i)->id == CSSValueInherit || m_valueList->value At(i)->id == CSSValueInitial)
5530 return false;
5531 }
5532
5533 ShorthandScope scope(this, CSSPropertyFont);
5534 // Optional font-style, font-variant and font-weight.
5535 bool fontStyleParsed = false;
5536 bool fontVariantParsed = false;
5537 bool fontWeightParsed = false;
5538 CSSParserValue* value;
5539 while ((value = m_valueList->current())) {
5540 if (!fontStyleParsed && isValidKeywordPropertyAndValue(CSSPropertyFontSt yle, value->id, m_context)) {
5541 addProperty(CSSPropertyFontStyle, cssValuePool().createIdentifierVal ue(value->id), important);
5542 fontStyleParsed = true;
5543 } else if (!fontVariantParsed && (value->id == CSSValueNormal || value-> id == CSSValueSmallCaps)) {
5544 // Font variant in the shorthand is particular, it only accepts norm al or small-caps.
5545 addProperty(CSSPropertyFontVariant, cssValuePool().createIdentifierV alue(value->id), important);
5546 fontVariantParsed = true;
5547 } else if (!fontWeightParsed && parseFontWeight(important))
5548 fontWeightParsed = true;
5549 else
5550 break;
5551 m_valueList->next();
5552 }
5553
5554 if (!value)
5555 return false;
5556
5557 if (!fontStyleParsed)
5558 addProperty(CSSPropertyFontStyle, cssValuePool().createIdentifierValue(C SSValueNormal), important, true);
5559 if (!fontVariantParsed)
5560 addProperty(CSSPropertyFontVariant, cssValuePool().createIdentifierValue (CSSValueNormal), important, true);
5561 if (!fontWeightParsed)
5562 addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierValue( CSSValueNormal), important, true);
5563
5564 // Now a font size _must_ come.
5565 // <absolute-size> | <relative-size> | <length> | <percentage> | inherit
5566 if (!parseFontSize(important))
5567 return false;
5568
5569 value = m_valueList->current();
5570 if (!value)
5571 return false;
5572
5573 if (isForwardSlashOperator(value)) {
5574 // The line-height property.
5575 value = m_valueList->next();
5576 if (!value)
5577 return false;
5578 if (!parseLineHeight(important))
5579 return false;
5580 } else
5581 addProperty(CSSPropertyLineHeight, cssValuePool().createIdentifierValue( CSSValueNormal), important, true);
5582
5583 // Font family must come now.
5584 RefPtr<CSSValue> parsedFamilyValue = parseFontFamily();
5585 if (!parsedFamilyValue)
5586 return false;
5587
5588 addProperty(CSSPropertyFontFamily, parsedFamilyValue.release(), important);
5589
5590 // FIXME: http://www.w3.org/TR/2011/WD-css3-fonts-20110324/#font-prop requir es that
5591 // "font-stretch", "font-size-adjust", and "font-kerning" be reset to their initial values
5592 // but we don't seem to support them at the moment. They should also be adde d here once implemented.
5593 if (m_valueList->current())
5594 return false;
5595
5596 return true;
5597 }
5598
5599 class FontFamilyValueBuilder {
5600 public:
5601 FontFamilyValueBuilder(CSSValueList* list)
5602 : m_list(list)
5603 {
5604 }
5605
5606 void add(const CSSParserString& string)
5607 {
5608 if (!m_builder.isEmpty())
5609 m_builder.append(' ');
5610
5611 if (string.is8Bit()) {
5612 m_builder.append(string.characters8(), string.length());
5613 return;
5614 }
5615
5616 m_builder.append(string.characters16(), string.length());
5617 }
5618
5619 void commit()
5620 {
5621 if (m_builder.isEmpty())
5622 return;
5623 m_list->append(cssValuePool().createFontFamilyValue(m_builder.toString() ));
5624 m_builder.clear();
5625 }
5626
5627 private:
5628 StringBuilder m_builder;
5629 CSSValueList* m_list;
5630 };
5631
5632 PassRefPtr<CSSValueList> CSSParser::parseFontFamily()
5633 {
5634 RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
5635 CSSParserValue* value = m_valueList->current();
5636
5637 FontFamilyValueBuilder familyBuilder(list.get());
5638 bool inFamily = false;
5639
5640 while (value) {
5641 CSSParserValue* nextValue = m_valueList->next();
5642 bool nextValBreaksFont = !nextValue ||
5643 (nextValue->unit == CSSParserValue::Operator && nextValue->iValue == ',');
5644 bool nextValIsFontName = nextValue &&
5645 ((nextValue->id >= CSSValueSerif && nextValue->id <= CSSValueWebkitB ody) ||
5646 (nextValue->unit == CSSPrimitiveValue::CSS_STRING || nextValue->unit == CSSPrimitiveValue::CSS_IDENT));
5647
5648 bool valueIsKeyword = value->id == CSSValueInitial || value->id == CSSVa lueInherit || value->id == CSSValueDefault;
5649 if (valueIsKeyword && !inFamily) {
5650 if (nextValBreaksFont)
5651 value = m_valueList->next();
5652 else if (nextValIsFontName)
5653 value = nextValue;
5654 continue;
5655 }
5656
5657 if (value->id >= CSSValueSerif && value->id <= CSSValueWebkitBody) {
5658 if (inFamily)
5659 familyBuilder.add(value->string);
5660 else if (nextValBreaksFont || !nextValIsFontName)
5661 list->append(cssValuePool().createIdentifierValue(value->id));
5662 else {
5663 familyBuilder.commit();
5664 familyBuilder.add(value->string);
5665 inFamily = true;
5666 }
5667 } else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
5668 // Strings never share in a family name.
5669 inFamily = false;
5670 familyBuilder.commit();
5671 list->append(cssValuePool().createFontFamilyValue(value->string));
5672 } else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
5673 if (inFamily)
5674 familyBuilder.add(value->string);
5675 else if (nextValBreaksFont || !nextValIsFontName)
5676 list->append(cssValuePool().createFontFamilyValue(value->string) );
5677 else {
5678 familyBuilder.commit();
5679 familyBuilder.add(value->string);
5680 inFamily = true;
5681 }
5682 } else {
5683 break;
5684 }
5685
5686 if (!nextValue)
5687 break;
5688
5689 if (nextValBreaksFont) {
5690 value = m_valueList->next();
5691 familyBuilder.commit();
5692 inFamily = false;
5693 }
5694 else if (nextValIsFontName)
5695 value = nextValue;
5696 else
5697 break;
5698 }
5699 familyBuilder.commit();
5700
5701 if (!list->length())
5702 list = 0;
5703 return list.release();
5704 }
5705
5706 bool CSSParser::parseLineHeight(bool important)
5707 {
5708 CSSParserValue* value = m_valueList->current();
5709 CSSValueID id = value->id;
5710 bool validPrimitive = false;
5711 // normal | <number> | <length> | <percentage> | inherit
5712 if (id == CSSValueNormal)
5713 validPrimitive = true;
5714 else
5715 validPrimitive = (!id && validUnit(value, FNumber | FLength | FPercent | FNonNeg));
5716 if (validPrimitive && (!m_valueList->next() || inShorthand()))
5717 addProperty(CSSPropertyLineHeight, parseValidPrimitive(id, value), impor tant);
5718 return validPrimitive;
5719 }
5720
5721 bool CSSParser::parseFontSize(bool important)
5722 {
5723 CSSParserValue* value = m_valueList->current();
5724 CSSValueID id = value->id;
5725 bool validPrimitive = false;
5726 // <absolute-size> | <relative-size> | <length> | <percentage> | inherit
5727 if (id >= CSSValueXxSmall && id <= CSSValueLarger)
5728 validPrimitive = true;
5729 else
5730 validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
5731 if (validPrimitive && (!m_valueList->next() || inShorthand()))
5732 addProperty(CSSPropertyFontSize, parseValidPrimitive(id, value), importa nt);
5733 return validPrimitive;
5734 }
5735
5736 bool CSSParser::parseFontVariant(bool important)
5737 {
5738 RefPtr<CSSValueList> values;
5739 if (m_valueList->size() > 1)
5740 values = CSSValueList::createCommaSeparated();
5741 CSSParserValue* val;
5742 bool expectComma = false;
5743 while ((val = m_valueList->current())) {
5744 RefPtr<CSSPrimitiveValue> parsedValue;
5745 if (!expectComma) {
5746 expectComma = true;
5747 if (val->id == CSSValueNormal || val->id == CSSValueSmallCaps)
5748 parsedValue = cssValuePool().createIdentifierValue(val->id);
5749 else if (val->id == CSSValueAll && !values) {
5750 // 'all' is only allowed in @font-face and with no other values. Make a value list to
5751 // indicate that we are in the @font-face case.
5752 values = CSSValueList::createCommaSeparated();
5753 parsedValue = cssValuePool().createIdentifierValue(val->id);
5754 }
5755 } else if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
5756 expectComma = false;
5757 m_valueList->next();
5758 continue;
5759 }
5760
5761 if (!parsedValue)
5762 return false;
5763
5764 m_valueList->next();
5765
5766 if (values)
5767 values->append(parsedValue.release());
5768 else {
5769 addProperty(CSSPropertyFontVariant, parsedValue.release(), important );
5770 return true;
5771 }
5772 }
5773
5774 if (values && values->length()) {
5775 m_hasFontFaceOnlyValues = true;
5776 addProperty(CSSPropertyFontVariant, values.release(), important);
5777 return true;
5778 }
5779
5780 return false;
5781 }
5782
5783 bool CSSParser::parseFontWeight(bool important)
5784 {
5785 CSSParserValue* value = m_valueList->current();
5786 if ((value->id >= CSSValueNormal) && (value->id <= CSSValue900)) {
5787 addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierValue( value->id), important);
5788 return true;
5789 }
5790 if (validUnit(value, FInteger | FNonNeg, HTMLQuirksMode)) {
5791 int weight = static_cast<int>(value->fValue);
5792 if (!(weight % 100) && weight >= 100 && weight <= 900) {
5793 addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierVa lue(static_cast<CSSValueID>(CSSValue100 + weight / 100 - 1)), important);
5794 return true;
5795 }
5796 }
5797 return false;
5798 }
5799
5800 bool CSSParser::parseFontFaceSrcURI(CSSValueList* valueList)
5801 {
5802 RefPtr<CSSFontFaceSrcValue> uriValue(CSSFontFaceSrcValue::create(completeURL (m_valueList->current()->string)));
5803
5804 CSSParserValue* value = m_valueList->next();
5805 if (!value) {
5806 valueList->append(uriValue.release());
5807 return true;
5808 }
5809 if (value->unit == CSSParserValue::Operator && value->iValue == ',') {
5810 m_valueList->next();
5811 valueList->append(uriValue.release());
5812 return true;
5813 }
5814
5815 if (value->unit != CSSParserValue::Function || !equalIgnoringCase(value->fun ction->name, "format("))
5816 return false;
5817
5818 // FIXME: http://www.w3.org/TR/2011/WD-css3-fonts-20111004/ says that format () contains a comma-separated list of strings,
5819 // but CSSFontFaceSrcValue stores only one format. Allowing one format for n ow.
5820 CSSParserValueList* args = value->function->args.get();
5821 if (!args || args->size() != 1 || (args->current()->unit != CSSPrimitiveValu e::CSS_STRING && args->current()->unit != CSSPrimitiveValue::CSS_IDENT))
5822 return false;
5823 uriValue->setFormat(args->current()->string);
5824 valueList->append(uriValue.release());
5825 value = m_valueList->next();
5826 if (value && value->unit == CSSParserValue::Operator && value->iValue == ',' )
5827 m_valueList->next();
5828 return true;
5829 }
5830
5831 bool CSSParser::parseFontFaceSrcLocal(CSSValueList* valueList)
5832 {
5833 CSSParserValueList* args = m_valueList->current()->function->args.get();
5834 if (!args || !args->size())
5835 return false;
5836
5837 if (args->size() == 1 && args->current()->unit == CSSPrimitiveValue::CSS_STR ING)
5838 valueList->append(CSSFontFaceSrcValue::createLocal(args->current()->stri ng));
5839 else if (args->current()->unit == CSSPrimitiveValue::CSS_IDENT) {
5840 StringBuilder builder;
5841 for (CSSParserValue* localValue = args->current(); localValue; localValu e = args->next()) {
5842 if (localValue->unit != CSSPrimitiveValue::CSS_IDENT)
5843 return false;
5844 if (!builder.isEmpty())
5845 builder.append(' ');
5846 builder.append(localValue->string);
5847 }
5848 valueList->append(CSSFontFaceSrcValue::createLocal(builder.toString()));
5849 } else
5850 return false;
5851
5852 if (CSSParserValue* value = m_valueList->next()) {
5853 if (value->unit == CSSParserValue::Operator && value->iValue == ',')
5854 m_valueList->next();
5855 }
5856 return true;
5857 }
5858
5859 bool CSSParser::parseFontFaceSrc()
5860 {
5861 RefPtr<CSSValueList> values(CSSValueList::createCommaSeparated());
5862
5863 while (CSSParserValue* value = m_valueList->current()) {
5864 if (value->unit == CSSPrimitiveValue::CSS_URI) {
5865 if (!parseFontFaceSrcURI(values.get()))
5866 return false;
5867 } else if (value->unit == CSSParserValue::Function && equalIgnoringCase( value->function->name, "local(")) {
5868 if (!parseFontFaceSrcLocal(values.get()))
5869 return false;
5870 } else
5871 return false;
5872 }
5873 if (!values->length())
5874 return false;
5875
5876 addProperty(CSSPropertySrc, values.release(), m_important);
5877 m_valueList->next();
5878 return true;
5879 }
5880
5881 bool CSSParser::parseFontFaceUnicodeRange()
5882 {
5883 RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
5884 bool failed = false;
5885 bool operatorExpected = false;
5886 for (; m_valueList->current(); m_valueList->next(), operatorExpected = !oper atorExpected) {
5887 if (operatorExpected) {
5888 if (m_valueList->current()->unit == CSSParserValue::Operator && m_va lueList->current()->iValue == ',')
5889 continue;
5890 failed = true;
5891 break;
5892 }
5893 if (m_valueList->current()->unit != CSSPrimitiveValue::CSS_UNICODE_RANGE ) {
5894 failed = true;
5895 break;
5896 }
5897
5898 String rangeString = m_valueList->current()->string;
5899 UChar32 from = 0;
5900 UChar32 to = 0;
5901 unsigned length = rangeString.length();
5902
5903 if (length < 3) {
5904 failed = true;
5905 break;
5906 }
5907
5908 unsigned i = 2;
5909 while (i < length) {
5910 UChar c = rangeString[i];
5911 if (c == '-' || c == '?')
5912 break;
5913 from *= 16;
5914 if (c >= '0' && c <= '9')
5915 from += c - '0';
5916 else if (c >= 'A' && c <= 'F')
5917 from += 10 + c - 'A';
5918 else if (c >= 'a' && c <= 'f')
5919 from += 10 + c - 'a';
5920 else {
5921 failed = true;
5922 break;
5923 }
5924 i++;
5925 }
5926 if (failed)
5927 break;
5928
5929 if (i == length)
5930 to = from;
5931 else if (rangeString[i] == '?') {
5932 unsigned span = 1;
5933 while (i < length && rangeString[i] == '?') {
5934 span *= 16;
5935 from *= 16;
5936 i++;
5937 }
5938 if (i < length)
5939 failed = true;
5940 to = from + span - 1;
5941 } else {
5942 if (length < i + 2) {
5943 failed = true;
5944 break;
5945 }
5946 i++;
5947 while (i < length) {
5948 UChar c = rangeString[i];
5949 to *= 16;
5950 if (c >= '0' && c <= '9')
5951 to += c - '0';
5952 else if (c >= 'A' && c <= 'F')
5953 to += 10 + c - 'A';
5954 else if (c >= 'a' && c <= 'f')
5955 to += 10 + c - 'a';
5956 else {
5957 failed = true;
5958 break;
5959 }
5960 i++;
5961 }
5962 if (failed)
5963 break;
5964 }
5965 if (from <= to)
5966 values->append(CSSUnicodeRangeValue::create(from, to));
5967 }
5968 if (failed || !values->length())
5969 return false;
5970 addProperty(CSSPropertyUnicodeRange, values.release(), m_important);
5971 return true;
5972 }
5973
5974 // Returns the number of characters which form a valid double
5975 // and are terminated by the given terminator character
5976 template <typename CharacterType>
5977 static int checkForValidDouble(const CharacterType* string, const CharacterType* end, const char terminator)
5978 {
5979 int length = end - string;
5980 if (length < 1)
5981 return 0;
5982
5983 bool decimalMarkSeen = false;
5984 int processedLength = 0;
5985
5986 for (int i = 0; i < length; ++i) {
5987 if (string[i] == terminator) {
5988 processedLength = i;
5989 break;
5990 }
5991 if (!isASCIIDigit(string[i])) {
5992 if (!decimalMarkSeen && string[i] == '.')
5993 decimalMarkSeen = true;
5994 else
5995 return 0;
5996 }
5997 }
5998
5999 if (decimalMarkSeen && processedLength == 1)
6000 return 0;
6001
6002 return processedLength;
6003 }
6004
6005 // Returns the number of characters consumed for parsing a valid double
6006 // terminated by the given terminator character
6007 template <typename CharacterType>
6008 static int parseDouble(const CharacterType* string, const CharacterType* end, co nst char terminator, double& value)
6009 {
6010 int length = checkForValidDouble(string, end, terminator);
6011 if (!length)
6012 return 0;
6013
6014 int position = 0;
6015 double localValue = 0;
6016
6017 // The consumed characters here are guaranteed to be
6018 // ASCII digits with or without a decimal mark
6019 for (; position < length; ++position) {
6020 if (string[position] == '.')
6021 break;
6022 localValue = localValue * 10 + string[position] - '0';
6023 }
6024
6025 if (++position == length) {
6026 value = localValue;
6027 return length;
6028 }
6029
6030 double fraction = 0;
6031 double scale = 1;
6032
6033 while (position < length && scale < MAX_SCALE) {
6034 fraction = fraction * 10 + string[position++] - '0';
6035 scale *= 10;
6036 }
6037
6038 value = localValue + fraction / scale;
6039 return length;
6040 }
6041
6042 template <typename CharacterType>
6043 static bool parseColorIntOrPercentage(const CharacterType*& string, const Charac terType* end, const char terminator, CSSPrimitiveValue::UnitTypes& expect, int& value)
6044 {
6045 const CharacterType* current = string;
6046 double localValue = 0;
6047 bool negative = false;
6048 while (current != end && isHTMLSpace<CharacterType>(*current))
6049 current++;
6050 if (current != end && *current == '-') {
6051 negative = true;
6052 current++;
6053 }
6054 if (current == end || !isASCIIDigit(*current))
6055 return false;
6056 while (current != end && isASCIIDigit(*current)) {
6057 double newValue = localValue * 10 + *current++ - '0';
6058 if (newValue >= 255) {
6059 // Clamp values at 255.
6060 localValue = 255;
6061 while (current != end && isASCIIDigit(*current))
6062 ++current;
6063 break;
6064 }
6065 localValue = newValue;
6066 }
6067
6068 if (current == end)
6069 return false;
6070
6071 if (expect == CSSPrimitiveValue::CSS_NUMBER && (*current == '.' || *current == '%'))
6072 return false;
6073
6074 if (*current == '.') {
6075 // We already parsed the integral part, try to parse
6076 // the fraction part of the percentage value.
6077 double percentage = 0;
6078 int numCharactersParsed = parseDouble(current, end, '%', percentage);
6079 if (!numCharactersParsed)
6080 return false;
6081 current += numCharactersParsed;
6082 if (*current != '%')
6083 return false;
6084 localValue += percentage;
6085 }
6086
6087 if (expect == CSSPrimitiveValue::CSS_PERCENTAGE && *current != '%')
6088 return false;
6089
6090 if (*current == '%') {
6091 expect = CSSPrimitiveValue::CSS_PERCENTAGE;
6092 localValue = localValue / 100.0 * 256.0;
6093 // Clamp values at 255 for percentages over 100%
6094 if (localValue > 255)
6095 localValue = 255;
6096 current++;
6097 } else
6098 expect = CSSPrimitiveValue::CSS_NUMBER;
6099
6100 while (current != end && isHTMLSpace<CharacterType>(*current))
6101 current++;
6102 if (current == end || *current++ != terminator)
6103 return false;
6104 // Clamp negative values at zero.
6105 value = negative ? 0 : static_cast<int>(localValue);
6106 string = current;
6107 return true;
6108 }
6109
6110 template <typename CharacterType>
6111 static inline bool isTenthAlpha(const CharacterType* string, const int length)
6112 {
6113 // "0.X"
6114 if (length == 3 && string[0] == '0' && string[1] == '.' && isASCIIDigit(stri ng[2]))
6115 return true;
6116
6117 // ".X"
6118 if (length == 2 && string[0] == '.' && isASCIIDigit(string[1]))
6119 return true;
6120
6121 return false;
6122 }
6123
6124 template <typename CharacterType>
6125 static inline bool parseAlphaValue(const CharacterType*& string, const Character Type* end, const char terminator, int& value)
6126 {
6127 while (string != end && isHTMLSpace<CharacterType>(*string))
6128 string++;
6129
6130 bool negative = false;
6131
6132 if (string != end && *string == '-') {
6133 negative = true;
6134 string++;
6135 }
6136
6137 value = 0;
6138
6139 int length = end - string;
6140 if (length < 2)
6141 return false;
6142
6143 if (string[length - 1] != terminator || !isASCIIDigit(string[length - 2]))
6144 return false;
6145
6146 if (string[0] != '0' && string[0] != '1' && string[0] != '.') {
6147 if (checkForValidDouble(string, end, terminator)) {
6148 value = negative ? 0 : 255;
6149 string = end;
6150 return true;
6151 }
6152 return false;
6153 }
6154
6155 if (length == 2 && string[0] != '.') {
6156 value = !negative && string[0] == '1' ? 255 : 0;
6157 string = end;
6158 return true;
6159 }
6160
6161 if (isTenthAlpha(string, length - 1)) {
6162 static const int tenthAlphaValues[] = { 0, 25, 51, 76, 102, 127, 153, 17 9, 204, 230 };
6163 value = negative ? 0 : tenthAlphaValues[string[length - 2] - '0'];
6164 string = end;
6165 return true;
6166 }
6167
6168 double alpha = 0;
6169 if (!parseDouble(string, end, terminator, alpha))
6170 return false;
6171 value = negative ? 0 : static_cast<int>(alpha * nextafter(256.0, 0.0));
6172 string = end;
6173 return true;
6174 }
6175
6176 template <typename CharacterType>
6177 static inline bool mightBeRGBA(const CharacterType* characters, unsigned length)
6178 {
6179 if (length < 5)
6180 return false;
6181 return characters[4] == '('
6182 && isASCIIAlphaCaselessEqual(characters[0], 'r')
6183 && isASCIIAlphaCaselessEqual(characters[1], 'g')
6184 && isASCIIAlphaCaselessEqual(characters[2], 'b')
6185 && isASCIIAlphaCaselessEqual(characters[3], 'a');
6186 }
6187
6188 template <typename CharacterType>
6189 static inline bool mightBeRGB(const CharacterType* characters, unsigned length)
6190 {
6191 if (length < 4)
6192 return false;
6193 return characters[3] == '('
6194 && isASCIIAlphaCaselessEqual(characters[0], 'r')
6195 && isASCIIAlphaCaselessEqual(characters[1], 'g')
6196 && isASCIIAlphaCaselessEqual(characters[2], 'b');
6197 }
6198
6199 template <typename CharacterType>
6200 static inline bool fastParseColorInternal(RGBA32& rgb, const CharacterType* char acters, unsigned length , bool strict)
6201 {
6202 CSSPrimitiveValue::UnitTypes expect = CSSPrimitiveValue::CSS_UNKNOWN;
6203
6204 if (!strict && length >= 3) {
6205 if (characters[0] == '#') {
6206 if (Color::parseHexColor(characters + 1, length - 1, rgb))
6207 return true;
6208 } else {
6209 if (Color::parseHexColor(characters, length, rgb))
6210 return true;
6211 }
6212 }
6213
6214 // Try rgba() syntax.
6215 if (mightBeRGBA(characters, length)) {
6216 const CharacterType* current = characters + 5;
6217 const CharacterType* end = characters + length;
6218 int red;
6219 int green;
6220 int blue;
6221 int alpha;
6222
6223 if (!parseColorIntOrPercentage(current, end, ',', expect, red))
6224 return false;
6225 if (!parseColorIntOrPercentage(current, end, ',', expect, green))
6226 return false;
6227 if (!parseColorIntOrPercentage(current, end, ',', expect, blue))
6228 return false;
6229 if (!parseAlphaValue(current, end, ')', alpha))
6230 return false;
6231 if (current != end)
6232 return false;
6233 rgb = makeRGBA(red, green, blue, alpha);
6234 return true;
6235 }
6236
6237 // Try rgb() syntax.
6238 if (mightBeRGB(characters, length)) {
6239 const CharacterType* current = characters + 4;
6240 const CharacterType* end = characters + length;
6241 int red;
6242 int green;
6243 int blue;
6244 if (!parseColorIntOrPercentage(current, end, ',', expect, red))
6245 return false;
6246 if (!parseColorIntOrPercentage(current, end, ',', expect, green))
6247 return false;
6248 if (!parseColorIntOrPercentage(current, end, ')', expect, blue))
6249 return false;
6250 if (current != end)
6251 return false;
6252 rgb = makeRGB(red, green, blue);
6253 return true;
6254 }
6255
6256 return false;
6257 }
6258
6259 template<typename StringType>
6260 bool CSSParser::fastParseColor(RGBA32& rgb, const StringType& name, bool strict)
6261 {
6262 unsigned length = name.length();
6263 bool parseResult;
6264
6265 if (!length)
6266 return false;
6267
6268 if (name.is8Bit())
6269 parseResult = fastParseColorInternal(rgb, name.characters8(), length, st rict);
6270 else
6271 parseResult = fastParseColorInternal(rgb, name.characters16(), length, s trict);
6272
6273 if (parseResult)
6274 return true;
6275
6276 // Try named colors.
6277 Color tc;
6278 tc.setNamedColor(name);
6279 if (tc.isValid()) {
6280 rgb = tc.rgb();
6281 return true;
6282 }
6283 return false;
6284 }
6285
6286 inline double CSSParser::parsedDouble(CSSParserValue *v, ReleaseParsedCalcValueC ondition releaseCalc)
6287 {
6288 const double result = m_parsedCalculation ? m_parsedCalculation->doubleValue () : v->fValue;
6289 if (releaseCalc == ReleaseParsedCalcValue)
6290 m_parsedCalculation.release();
6291 return result;
6292 }
6293
6294 bool CSSParser::isCalculation(CSSParserValue* value)
6295 {
6296 return (value->unit == CSSParserValue::Function)
6297 && (equalIgnoringCase(value->function->name, "calc(")
6298 || equalIgnoringCase(value->function->name, "-webkit-calc(")
6299 || equalIgnoringCase(value->function->name, "-webkit-min(")
6300 || equalIgnoringCase(value->function->name, "-webkit-max("));
6301 }
6302
6303 inline int CSSParser::colorIntFromValue(CSSParserValue* v)
6304 {
6305 bool isPercent;
6306
6307 if (m_parsedCalculation)
6308 isPercent = m_parsedCalculation->category() == CalcPercent;
6309 else
6310 isPercent = v->unit == CSSPrimitiveValue::CSS_PERCENTAGE;
6311
6312 const double value = parsedDouble(v, ReleaseParsedCalcValue);
6313
6314 if (value <= 0.0)
6315 return 0;
6316
6317 if (isPercent) {
6318 if (value >= 100.0)
6319 return 255;
6320 return static_cast<int>(value * 256.0 / 100.0);
6321 }
6322
6323 if (value >= 255.0)
6324 return 255;
6325
6326 return static_cast<int>(value);
6327 }
6328
6329 bool CSSParser::parseColorParameters(CSSParserValue* value, int* colorArray, boo l parseAlpha)
6330 {
6331 CSSParserValueList* args = value->function->args.get();
6332 CSSParserValue* v = args->current();
6333 Units unitType = FUnknown;
6334 // Get the first value and its type
6335 if (validUnit(v, FInteger, HTMLStandardMode))
6336 unitType = FInteger;
6337 else if (validUnit(v, FPercent, HTMLStandardMode))
6338 unitType = FPercent;
6339 else
6340 return false;
6341
6342 colorArray[0] = colorIntFromValue(v);
6343 for (int i = 1; i < 3; i++) {
6344 v = args->next();
6345 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
6346 return false;
6347 v = args->next();
6348 if (!validUnit(v, unitType, HTMLStandardMode))
6349 return false;
6350 colorArray[i] = colorIntFromValue(v);
6351 }
6352 if (parseAlpha) {
6353 v = args->next();
6354 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
6355 return false;
6356 v = args->next();
6357 if (!validUnit(v, FNumber, HTMLStandardMode))
6358 return false;
6359 const double value = parsedDouble(v, ReleaseParsedCalcValue);
6360 // Convert the floating pointer number of alpha to an integer in the ran ge [0, 256),
6361 // with an equal distribution across all 256 values.
6362 colorArray[3] = static_cast<int>(max(0.0, min(1.0, value)) * nextafter(2 56.0, 0.0));
6363 }
6364 return true;
6365 }
6366
6367 // The CSS3 specification defines the format of a HSL color as
6368 // hsl(<number>, <percent>, <percent>)
6369 // and with alpha, the format is
6370 // hsla(<number>, <percent>, <percent>, <number>)
6371 // The first value, HUE, is in an angle with a value between 0 and 360
6372 bool CSSParser::parseHSLParameters(CSSParserValue* value, double* colorArray, bo ol parseAlpha)
6373 {
6374 CSSParserValueList* args = value->function->args.get();
6375 CSSParserValue* v = args->current();
6376 // Get the first value
6377 if (!validUnit(v, FNumber, HTMLStandardMode))
6378 return false;
6379 // normalize the Hue value and change it to be between 0 and 1.0
6380 colorArray[0] = (((static_cast<int>(parsedDouble(v, ReleaseParsedCalcValue)) % 360) + 360) % 360) / 360.0;
6381 for (int i = 1; i < 3; i++) {
6382 v = args->next();
6383 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
6384 return false;
6385 v = args->next();
6386 if (!validUnit(v, FPercent, HTMLStandardMode))
6387 return false;
6388 colorArray[i] = max(0.0, min(100.0, parsedDouble(v, ReleaseParsedCalcVal ue))) / 100.0; // needs to be value between 0 and 1.0
6389 }
6390 if (parseAlpha) {
6391 v = args->next();
6392 if (v->unit != CSSParserValue::Operator && v->iValue != ',')
6393 return false;
6394 v = args->next();
6395 if (!validUnit(v, FNumber, HTMLStandardMode))
6396 return false;
6397 colorArray[3] = max(0.0, min(1.0, parsedDouble(v, ReleaseParsedCalcValue )));
6398 }
6399 return true;
6400 }
6401
6402 PassRefPtr<CSSPrimitiveValue> CSSParser::parseColor(CSSParserValue* value)
6403 {
6404 RGBA32 c = Color::transparent;
6405 if (!parseColorFromValue(value ? value : m_valueList->current(), c))
6406 return 0;
6407 return cssValuePool().createColorValue(c);
6408 }
6409
6410 bool CSSParser::parseColorFromValue(CSSParserValue* value, RGBA32& c)
6411 {
6412 if (inQuirksMode() && value->unit == CSSPrimitiveValue::CSS_NUMBER
6413 && value->fValue >= 0. && value->fValue < 1000000.) {
6414 String str = String::format("%06d", static_cast<int>((value->fValue+.5)) );
6415 // FIXME: This should be strict parsing for SVG as well.
6416 if (!fastParseColor(c, str, !inQuirksMode()))
6417 return false;
6418 } else if (value->unit == CSSPrimitiveValue::CSS_PARSER_HEXCOLOR ||
6419 value->unit == CSSPrimitiveValue::CSS_IDENT ||
6420 (inQuirksMode() && value->unit == CSSPrimitiveValue::CSS_DIMENSI ON)) {
6421 if (!fastParseColor(c, value->string, !inQuirksMode() && value->unit == CSSPrimitiveValue::CSS_IDENT))
6422 return false;
6423 } else if (value->unit == CSSParserValue::Function &&
6424 value->function->args != 0 &&
6425 value->function->args->size() == 5 /* rgb + two commas */ &&
6426 equalIgnoringCase(value->function->name, "rgb(")) {
6427 int colorValues[3];
6428 if (!parseColorParameters(value, colorValues, false))
6429 return false;
6430 c = makeRGB(colorValues[0], colorValues[1], colorValues[2]);
6431 } else {
6432 if (value->unit == CSSParserValue::Function &&
6433 value->function->args != 0 &&
6434 value->function->args->size() == 7 /* rgba + three commas */ &&
6435 equalIgnoringCase(value->function->name, "rgba(")) {
6436 int colorValues[4];
6437 if (!parseColorParameters(value, colorValues, true))
6438 return false;
6439 c = makeRGBA(colorValues[0], colorValues[1], colorValues[2], colorVa lues[3]);
6440 } else if (value->unit == CSSParserValue::Function &&
6441 value->function->args != 0 &&
6442 value->function->args->size() == 5 /* hsl + two commas */ &&
6443 equalIgnoringCase(value->function->name, "hsl(")) {
6444 double colorValues[3];
6445 if (!parseHSLParameters(value, colorValues, false))
6446 return false;
6447 c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], 1.0);
6448 } else if (value->unit == CSSParserValue::Function &&
6449 value->function->args != 0 &&
6450 value->function->args->size() == 7 /* hsla + three commas */ &&
6451 equalIgnoringCase(value->function->name, "hsla(")) {
6452 double colorValues[4];
6453 if (!parseHSLParameters(value, colorValues, true))
6454 return false;
6455 c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
6456 } else
6457 return false;
6458 }
6459
6460 return true;
6461 }
6462
6463 // This class tracks parsing state for shadow values. If it goes out of scope ( e.g., due to an early return)
6464 // without the allowBreak bit being set, then it will clean up all of the object s and destroy them.
6465 struct ShadowParseContext {
6466 ShadowParseContext(CSSPropertyID prop, CSSParser* parser)
6467 : property(prop)
6468 , m_parser(parser)
6469 , allowX(true)
6470 , allowY(false)
6471 , allowBlur(false)
6472 , allowSpread(false)
6473 , allowColor(true)
6474 , allowStyle(prop == CSSPropertyWebkitBoxShadow || prop == CSSPropertyBo xShadow)
6475 , allowBreak(true)
6476 {
6477 }
6478
6479 bool allowLength() { return allowX || allowY || allowBlur || allowSpread; }
6480
6481 void commitValue()
6482 {
6483 // Handle the ,, case gracefully by doing nothing.
6484 if (x || y || blur || spread || color || style) {
6485 if (!values)
6486 values = CSSValueList::createCommaSeparated();
6487
6488 // Construct the current shadow value and add it to the list.
6489 values->append(CSSShadowValue::create(x.release(), y.release(), blur .release(), spread.release(), style.release(), color.release()));
6490 }
6491
6492 // Now reset for the next shadow value.
6493 x = 0;
6494 y = 0;
6495 blur = 0;
6496 spread = 0;
6497 style = 0;
6498 color = 0;
6499
6500 allowX = true;
6501 allowColor = true;
6502 allowBreak = true;
6503 allowY = false;
6504 allowBlur = false;
6505 allowSpread = false;
6506 allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPr opertyBoxShadow;
6507 }
6508
6509 void commitLength(CSSParserValue* v)
6510 {
6511 RefPtr<CSSPrimitiveValue> val = m_parser->createPrimitiveNumericValue(v) ;
6512
6513 if (allowX) {
6514 x = val.release();
6515 allowX = false;
6516 allowY = true;
6517 allowColor = false;
6518 allowStyle = false;
6519 allowBreak = false;
6520 } else if (allowY) {
6521 y = val.release();
6522 allowY = false;
6523 allowBlur = true;
6524 allowColor = true;
6525 allowStyle = property == CSSPropertyWebkitBoxShadow || property == C SSPropertyBoxShadow;
6526 allowBreak = true;
6527 } else if (allowBlur) {
6528 blur = val.release();
6529 allowBlur = false;
6530 allowSpread = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
6531 } else if (allowSpread) {
6532 spread = val.release();
6533 allowSpread = false;
6534 }
6535 }
6536
6537 void commitColor(PassRefPtr<CSSPrimitiveValue> val)
6538 {
6539 color = val;
6540 allowColor = false;
6541 if (allowX) {
6542 allowStyle = false;
6543 allowBreak = false;
6544 } else {
6545 allowBlur = false;
6546 allowSpread = false;
6547 allowStyle = property == CSSPropertyWebkitBoxShadow || property == C SSPropertyBoxShadow;
6548 }
6549 }
6550
6551 void commitStyle(CSSParserValue* v)
6552 {
6553 style = cssValuePool().createIdentifierValue(v->id);
6554 allowStyle = false;
6555 if (allowX)
6556 allowBreak = false;
6557 else {
6558 allowBlur = false;
6559 allowSpread = false;
6560 allowColor = false;
6561 }
6562 }
6563
6564 CSSPropertyID property;
6565 CSSParser* m_parser;
6566
6567 RefPtr<CSSValueList> values;
6568 RefPtr<CSSPrimitiveValue> x;
6569 RefPtr<CSSPrimitiveValue> y;
6570 RefPtr<CSSPrimitiveValue> blur;
6571 RefPtr<CSSPrimitiveValue> spread;
6572 RefPtr<CSSPrimitiveValue> style;
6573 RefPtr<CSSPrimitiveValue> color;
6574
6575 bool allowX;
6576 bool allowY;
6577 bool allowBlur;
6578 bool allowSpread;
6579 bool allowColor;
6580 bool allowStyle; // inset or not.
6581 bool allowBreak;
6582 };
6583
6584 PassRefPtr<CSSValueList> CSSParser::parseShadow(CSSParserValueList* valueList, C SSPropertyID propId)
6585 {
6586 ShadowParseContext context(propId, this);
6587 CSSParserValue* val;
6588 while ((val = valueList->current())) {
6589 // Check for a comma break first.
6590 if (val->unit == CSSParserValue::Operator) {
6591 if (val->iValue != ',' || !context.allowBreak)
6592 // Other operators aren't legal or we aren't done with the curre nt shadow
6593 // value. Treat as invalid.
6594 return 0;
6595 // The value is good. Commit it.
6596 context.commitValue();
6597 } else if (validUnit(val, FLength, HTMLStandardMode)) {
6598 // We required a length and didn't get one. Invalid.
6599 if (!context.allowLength())
6600 return 0;
6601
6602 // Blur radius must be non-negative.
6603 if (context.allowBlur && !validUnit(val, FLength | FNonNeg, HTMLStan dardMode))
6604 return 0;
6605
6606 // A length is allowed here. Construct the value and add it.
6607 context.commitLength(val);
6608 } else if (val->id == CSSValueInset) {
6609 if (!context.allowStyle)
6610 return 0;
6611
6612 context.commitStyle(val);
6613 } else {
6614 // The only other type of value that's ok is a color value.
6615 RefPtr<CSSPrimitiveValue> parsedColor;
6616 bool isColor = ((val->id >= CSSValueAqua && val->id <= CSSValueWindo wtext) || val->id == CSSValueMenu
6617 || (val->id >= CSSValueWebkitFocusRingColor && val-> id <= CSSValueWebkitText && inQuirksMode())
6618 || val->id == CSSValueCurrentcolor);
6619 if (isColor) {
6620 if (!context.allowColor)
6621 return 0;
6622 parsedColor = cssValuePool().createIdentifierValue(val->id);
6623 }
6624
6625 if (!parsedColor)
6626 // It's not built-in. Try to parse it as a color.
6627 parsedColor = parseColor(val);
6628
6629 if (!parsedColor || !context.allowColor)
6630 return 0; // This value is not a color or length and is invalid or
6631 // it is a color, but a color isn't allowed at this po int.
6632
6633 context.commitColor(parsedColor.release());
6634 }
6635
6636 valueList->next();
6637 }
6638
6639 if (context.allowBreak) {
6640 context.commitValue();
6641 if (context.values && context.values->length())
6642 return context.values.release();
6643 }
6644
6645 return 0;
6646 }
6647
6648 bool CSSParser::parseReflect(CSSPropertyID propId, bool important)
6649 {
6650 // box-reflect: <direction> <offset> <mask>
6651
6652 // Direction comes first.
6653 CSSParserValue* val = m_valueList->current();
6654 RefPtr<CSSPrimitiveValue> direction;
6655 if (val->unit == CSSPrimitiveValue::CSS_VARIABLE_NAME)
6656 direction = createPrimitiveVariableNameValue(val);
6657 else
6658 switch (val->id) {
6659 case CSSValueAbove:
6660 case CSSValueBelow:
6661 case CSSValueLeft:
6662 case CSSValueRight:
6663 direction = cssValuePool().createIdentifierValue(val->id);
6664 break;
6665 default:
6666 return false;
6667 }
6668
6669 // The offset comes next.
6670 val = m_valueList->next();
6671 RefPtr<CSSPrimitiveValue> offset;
6672 if (!val)
6673 offset = cssValuePool().createValue(0, CSSPrimitiveValue::CSS_PX);
6674 else {
6675 if (!validUnit(val, FLength | FPercent))
6676 return false;
6677 offset = createPrimitiveNumericValue(val);
6678 }
6679
6680 // Now for the mask.
6681 RefPtr<CSSValue> mask;
6682 val = m_valueList->next();
6683 if (val) {
6684 mask = parseBorderImage(propId);
6685 if (!mask)
6686 return false;
6687 }
6688
6689 RefPtr<CSSReflectValue> reflectValue = CSSReflectValue::create(direction.rel ease(), offset.release(), mask.release());
6690 addProperty(propId, reflectValue.release(), important);
6691 m_valueList->next();
6692 return true;
6693 }
6694
6695 bool CSSParser::parseFlex(CSSParserValueList* args, bool important)
6696 {
6697 if (!args || !args->size() || args->size() > 3)
6698 return false;
6699 static const double unsetValue = -1;
6700 double flexGrow = unsetValue;
6701 double flexShrink = unsetValue;
6702 RefPtr<CSSPrimitiveValue> flexBasis;
6703
6704 while (CSSParserValue* arg = args->current()) {
6705 if (validUnit(arg, FNumber | FNonNeg)) {
6706 if (flexGrow == unsetValue)
6707 flexGrow = arg->fValue;
6708 else if (flexShrink == unsetValue)
6709 flexShrink = arg->fValue;
6710 else if (!arg->fValue) {
6711 // flex only allows a basis of 0 (sans units) if flex-grow and f lex-shrink values have already been set.
6712 flexBasis = cssValuePool().createValue(0, CSSPrimitiveValue::CSS _PX);
6713 } else {
6714 // We only allow 3 numbers without units if the last value is 0. E.g., flex:1 1 1 is invalid.
6715 return false;
6716 }
6717 } else if (!flexBasis && (arg->id == CSSValueAuto || validUnit(arg, FLen gth | FPercent | FNonNeg)))
6718 flexBasis = parseValidPrimitive(arg->id, arg);
6719 else {
6720 // Not a valid arg for flex.
6721 return false;
6722 }
6723 args->next();
6724 }
6725
6726 if (flexGrow == unsetValue)
6727 flexGrow = 1;
6728 if (flexShrink == unsetValue)
6729 flexShrink = 1;
6730 if (!flexBasis)
6731 flexBasis = cssValuePool().createValue(0, CSSPrimitiveValue::CSS_PX);
6732
6733 addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(clampToFloat(fle xGrow), CSSPrimitiveValue::CSS_NUMBER), important);
6734 addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(clampToFloat(f lexShrink), CSSPrimitiveValue::CSS_NUMBER), important);
6735 addProperty(CSSPropertyFlexBasis, flexBasis, important);
6736 return true;
6737 }
6738
6739 bool CSSParser::parseObjectPosition(bool important)
6740 {
6741 RefPtr<CSSValue> xValue;
6742 RefPtr<CSSValue> yValue;
6743 parseFillPosition(m_valueList.get(), xValue, yValue);
6744 if (!xValue || !yValue)
6745 return false;
6746 addProperty(
6747 CSSPropertyObjectPosition,
6748 createPrimitiveValuePair(toCSSPrimitiveValue(xValue.get()), toCSSPrimiti veValue(yValue.get()), Pair::KeepIdenticalValues),
6749 important);
6750 return true;
6751 }
6752
6753 struct BorderImageParseContext {
6754 BorderImageParseContext()
6755 : m_canAdvance(false)
6756 , m_allowCommit(true)
6757 , m_allowImage(true)
6758 , m_allowImageSlice(true)
6759 , m_allowRepeat(true)
6760 , m_allowForwardSlashOperator(false)
6761 , m_requireWidth(false)
6762 , m_requireOutset(false)
6763 {}
6764
6765 bool canAdvance() const { return m_canAdvance; }
6766 void setCanAdvance(bool canAdvance) { m_canAdvance = canAdvance; }
6767
6768 bool allowCommit() const { return m_allowCommit; }
6769 bool allowImage() const { return m_allowImage; }
6770 bool allowImageSlice() const { return m_allowImageSlice; }
6771 bool allowRepeat() const { return m_allowRepeat; }
6772 bool allowForwardSlashOperator() const { return m_allowForwardSlashOperator; }
6773
6774 bool requireWidth() const { return m_requireWidth; }
6775 bool requireOutset() const { return m_requireOutset; }
6776
6777 void commitImage(PassRefPtr<CSSValue> image)
6778 {
6779 m_image = image;
6780 m_canAdvance = true;
6781 m_allowCommit = true;
6782 m_allowImage = m_allowForwardSlashOperator = m_requireWidth = m_requireO utset = false;
6783 m_allowImageSlice = !m_imageSlice;
6784 m_allowRepeat = !m_repeat;
6785 }
6786 void commitImageSlice(PassRefPtr<CSSBorderImageSliceValue> slice)
6787 {
6788 m_imageSlice = slice;
6789 m_canAdvance = true;
6790 m_allowCommit = m_allowForwardSlashOperator = true;
6791 m_allowImageSlice = m_requireWidth = m_requireOutset = false;
6792 m_allowImage = !m_image;
6793 m_allowRepeat = !m_repeat;
6794 }
6795 void commitForwardSlashOperator()
6796 {
6797 m_canAdvance = true;
6798 m_allowCommit = m_allowImage = m_allowImageSlice = m_allowRepeat = m_all owForwardSlashOperator = false;
6799 if (!m_borderSlice) {
6800 m_requireWidth = true;
6801 m_requireOutset = false;
6802 } else {
6803 m_requireOutset = true;
6804 m_requireWidth = false;
6805 }
6806 }
6807 void commitBorderWidth(PassRefPtr<CSSPrimitiveValue> slice)
6808 {
6809 m_borderSlice = slice;
6810 m_canAdvance = true;
6811 m_allowCommit = m_allowForwardSlashOperator = true;
6812 m_allowImageSlice = m_requireWidth = m_requireOutset = false;
6813 m_allowImage = !m_image;
6814 m_allowRepeat = !m_repeat;
6815 }
6816 void commitBorderOutset(PassRefPtr<CSSPrimitiveValue> outset)
6817 {
6818 m_outset = outset;
6819 m_canAdvance = true;
6820 m_allowCommit = true;
6821 m_allowImageSlice = m_allowForwardSlashOperator = m_requireWidth = m_req uireOutset = false;
6822 m_allowImage = !m_image;
6823 m_allowRepeat = !m_repeat;
6824 }
6825 void commitRepeat(PassRefPtr<CSSValue> repeat)
6826 {
6827 m_repeat = repeat;
6828 m_canAdvance = true;
6829 m_allowCommit = true;
6830 m_allowRepeat = m_allowForwardSlashOperator = m_requireWidth = m_require Outset = false;
6831 m_allowImageSlice = !m_imageSlice;
6832 m_allowImage = !m_image;
6833 }
6834
6835 PassRefPtr<CSSValue> commitCSSValue()
6836 {
6837 return createBorderImageValue(m_image, m_imageSlice, m_borderSlice, m_ou tset, m_repeat);
6838 }
6839
6840 void commitMaskBoxImage(CSSParser* parser, bool important)
6841 {
6842 commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageSource, parser, m _image, important);
6843 commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageSlice, parser, m_ imageSlice, important);
6844 commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageWidth, parser, m_ borderSlice, important);
6845 commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageOutset, parser, m _outset, important);
6846 commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageRepeat, parser, m _repeat, important);
6847 }
6848
6849 void commitBorderImage(CSSParser* parser, bool important)
6850 {
6851 commitBorderImageProperty(CSSPropertyBorderImageSource, parser, m_image, important);
6852 commitBorderImageProperty(CSSPropertyBorderImageSlice, parser, m_imageSl ice, important);
6853 commitBorderImageProperty(CSSPropertyBorderImageWidth, parser, m_borderS lice, important);
6854 commitBorderImageProperty(CSSPropertyBorderImageOutset, parser, m_outset , important);
6855 commitBorderImageProperty(CSSPropertyBorderImageRepeat, parser, m_repeat , important);
6856 }
6857
6858 void commitBorderImageProperty(CSSPropertyID propId, CSSParser* parser, Pass RefPtr<CSSValue> value, bool important)
6859 {
6860 if (value)
6861 parser->addProperty(propId, value, important);
6862 else
6863 parser->addProperty(propId, cssValuePool().createImplicitInitialValu e(), important, true);
6864 }
6865
6866 bool m_canAdvance;
6867
6868 bool m_allowCommit;
6869 bool m_allowImage;
6870 bool m_allowImageSlice;
6871 bool m_allowRepeat;
6872 bool m_allowForwardSlashOperator;
6873
6874 bool m_requireWidth;
6875 bool m_requireOutset;
6876
6877 RefPtr<CSSValue> m_image;
6878 RefPtr<CSSBorderImageSliceValue> m_imageSlice;
6879 RefPtr<CSSPrimitiveValue> m_borderSlice;
6880 RefPtr<CSSPrimitiveValue> m_outset;
6881
6882 RefPtr<CSSValue> m_repeat;
6883 };
6884
6885 static bool buildBorderImageParseContext(CSSParser& parser, CSSPropertyID propId , BorderImageParseContext& context)
6886 {
6887 ShorthandScope scope(&parser, propId);
6888 while (CSSParserValue* val = parser.m_valueList->current()) {
6889 context.setCanAdvance(false);
6890
6891 if (!context.canAdvance() && context.allowForwardSlashOperator() && isFo rwardSlashOperator(val))
6892 context.commitForwardSlashOperator();
6893
6894 if (!context.canAdvance() && context.allowImage()) {
6895 if (val->unit == CSSPrimitiveValue::CSS_URI) {
6896 context.commitImage(CSSImageValue::create(parser.m_context.compl eteURL(val->string)));
6897 } else if (isGeneratedImageValue(val)) {
6898 RefPtr<CSSValue> value;
6899 if (parser.parseGeneratedImage(parser.m_valueList.get(), value))
6900 context.commitImage(value.release());
6901 else
6902 return false;
6903 } else if (val->unit == CSSParserValue::Function && equalIgnoringCas e(val->function->name, "-webkit-image-set(")) {
6904 RefPtr<CSSValue> value = parser.parseImageSet(parser.m_valueList .get());
6905 if (value)
6906 context.commitImage(value.release());
6907 else
6908 return false;
6909 } else if (val->id == CSSValueNone)
6910 context.commitImage(cssValuePool().createIdentifierValue(CSSValu eNone));
6911 }
6912
6913 if (!context.canAdvance() && context.allowImageSlice()) {
6914 RefPtr<CSSBorderImageSliceValue> imageSlice;
6915 if (parser.parseBorderImageSlice(propId, imageSlice))
6916 context.commitImageSlice(imageSlice.release());
6917 }
6918
6919 if (!context.canAdvance() && context.allowRepeat()) {
6920 RefPtr<CSSValue> repeat;
6921 if (parser.parseBorderImageRepeat(repeat))
6922 context.commitRepeat(repeat.release());
6923 }
6924
6925 if (!context.canAdvance() && context.requireWidth()) {
6926 RefPtr<CSSPrimitiveValue> borderSlice;
6927 if (parser.parseBorderImageWidth(borderSlice))
6928 context.commitBorderWidth(borderSlice.release());
6929 }
6930
6931 if (!context.canAdvance() && context.requireOutset()) {
6932 RefPtr<CSSPrimitiveValue> borderOutset;
6933 if (parser.parseBorderImageOutset(borderOutset))
6934 context.commitBorderOutset(borderOutset.release());
6935 }
6936
6937 if (!context.canAdvance())
6938 return false;
6939
6940 parser.m_valueList->next();
6941 }
6942
6943 return context.allowCommit();
6944 }
6945
6946 bool CSSParser::parseBorderImageShorthand(CSSPropertyID propId, bool important)
6947 {
6948 BorderImageParseContext context;
6949 if (buildBorderImageParseContext(*this, propId, context)) {
6950 switch (propId) {
6951 case CSSPropertyWebkitMaskBoxImage:
6952 context.commitMaskBoxImage(this, important);
6953 return true;
6954 case CSSPropertyBorderImage:
6955 context.commitBorderImage(this, important);
6956 return true;
6957 default:
6958 ASSERT_NOT_REACHED();
6959 return false;
6960 }
6961 }
6962 return false;
6963 }
6964
6965 PassRefPtr<CSSValue> CSSParser::parseBorderImage(CSSPropertyID propId)
6966 {
6967 BorderImageParseContext context;
6968 if (buildBorderImageParseContext(*this, propId, context)) {
6969 return context.commitCSSValue();
6970 }
6971 return 0;
6972 }
6973
6974 static bool isBorderImageRepeatKeyword(int id)
6975 {
6976 return id == CSSValueStretch || id == CSSValueRepeat || id == CSSValueSpace || id == CSSValueRound;
6977 }
6978
6979 bool CSSParser::parseBorderImageRepeat(RefPtr<CSSValue>& result)
6980 {
6981 RefPtr<CSSPrimitiveValue> firstValue;
6982 RefPtr<CSSPrimitiveValue> secondValue;
6983 CSSParserValue* val = m_valueList->current();
6984 if (!val)
6985 return false;
6986 if (isBorderImageRepeatKeyword(val->id))
6987 firstValue = cssValuePool().createIdentifierValue(val->id);
6988 else
6989 return false;
6990
6991 val = m_valueList->next();
6992 if (val) {
6993 if (isBorderImageRepeatKeyword(val->id))
6994 secondValue = cssValuePool().createIdentifierValue(val->id);
6995 else if (!inShorthand()) {
6996 // If we're not parsing a shorthand then we are invalid.
6997 return false;
6998 } else {
6999 // We need to rewind the value list, so that when its advanced we'll
7000 // end up back at this value.
7001 m_valueList->previous();
7002 secondValue = firstValue;
7003 }
7004 } else
7005 secondValue = firstValue;
7006
7007 result = createPrimitiveValuePair(firstValue, secondValue);
7008 return true;
7009 }
7010
7011 class BorderImageSliceParseContext {
7012 public:
7013 BorderImageSliceParseContext(CSSParser* parser)
7014 : m_parser(parser)
7015 , m_allowNumber(true)
7016 , m_allowFill(true)
7017 , m_allowFinalCommit(false)
7018 , m_fill(false)
7019 { }
7020
7021 bool allowNumber() const { return m_allowNumber; }
7022 bool allowFill() const { return m_allowFill; }
7023 bool allowFinalCommit() const { return m_allowFinalCommit; }
7024 CSSPrimitiveValue* top() const { return m_top.get(); }
7025
7026 void commitNumber(CSSParserValue* v)
7027 {
7028 RefPtr<CSSPrimitiveValue> val = m_parser->createPrimitiveNumericValue(v) ;
7029 if (!m_top)
7030 m_top = val;
7031 else if (!m_right)
7032 m_right = val;
7033 else if (!m_bottom)
7034 m_bottom = val;
7035 else {
7036 ASSERT(!m_left);
7037 m_left = val;
7038 }
7039
7040 m_allowNumber = !m_left;
7041 m_allowFinalCommit = true;
7042 }
7043
7044 void commitFill() { m_fill = true; m_allowFill = false; m_allowNumber = !m_t op; }
7045
7046 PassRefPtr<CSSBorderImageSliceValue> commitBorderImageSlice()
7047 {
7048 // We need to clone and repeat values for any omissions.
7049 ASSERT(m_top);
7050 if (!m_right) {
7051 m_right = m_top;
7052 m_bottom = m_top;
7053 m_left = m_top;
7054 }
7055 if (!m_bottom) {
7056 m_bottom = m_top;
7057 m_left = m_right;
7058 }
7059 if (!m_left)
7060 m_left = m_right;
7061
7062 // Now build a rect value to hold all four of our primitive values.
7063 RefPtr<Quad> quad = Quad::create();
7064 quad->setTop(m_top);
7065 quad->setRight(m_right);
7066 quad->setBottom(m_bottom);
7067 quad->setLeft(m_left);
7068
7069 // Make our new border image value now.
7070 return CSSBorderImageSliceValue::create(cssValuePool().createValue(quad. release()), m_fill);
7071 }
7072
7073 private:
7074 CSSParser* m_parser;
7075
7076 bool m_allowNumber;
7077 bool m_allowFill;
7078 bool m_allowFinalCommit;
7079
7080 RefPtr<CSSPrimitiveValue> m_top;
7081 RefPtr<CSSPrimitiveValue> m_right;
7082 RefPtr<CSSPrimitiveValue> m_bottom;
7083 RefPtr<CSSPrimitiveValue> m_left;
7084
7085 bool m_fill;
7086 };
7087
7088 bool CSSParser::parseBorderImageSlice(CSSPropertyID propId, RefPtr<CSSBorderImag eSliceValue>& result)
7089 {
7090 BorderImageSliceParseContext context(this);
7091 CSSParserValue* val;
7092 while ((val = m_valueList->current())) {
7093 // FIXME calc() http://webkit.org/b/16662 : calc is parsed but values ar e not created yet.
7094 if (context.allowNumber() && !isCalculation(val) && validUnit(val, FInte ger | FNonNeg | FPercent, HTMLStandardMode)) {
7095 context.commitNumber(val);
7096 } else if (context.allowFill() && val->id == CSSValueFill)
7097 context.commitFill();
7098 else if (!inShorthand()) {
7099 // If we're not parsing a shorthand then we are invalid.
7100 return false;
7101 } else {
7102 if (context.allowFinalCommit()) {
7103 // We're going to successfully parse, but we don't want to consu me this token.
7104 m_valueList->previous();
7105 }
7106 break;
7107 }
7108 m_valueList->next();
7109 }
7110
7111 if (context.allowFinalCommit()) {
7112 // FIXME: For backwards compatibility, -webkit-border-image, -webkit-mas k-box-image and -webkit-box-reflect have to do a fill by default.
7113 // FIXME: What do we do with -webkit-box-reflect and -webkit-mask-box-im age? Probably just have to leave them filling...
7114 if (propId == CSSPropertyWebkitBorderImage || propId == CSSPropertyWebki tMaskBoxImage || propId == CSSPropertyWebkitBoxReflect)
7115 context.commitFill();
7116
7117 // Need to fully commit as a single value.
7118 result = context.commitBorderImageSlice();
7119 return true;
7120 }
7121
7122 return false;
7123 }
7124
7125 class BorderImageQuadParseContext {
7126 public:
7127 BorderImageQuadParseContext(CSSParser* parser)
7128 : m_parser(parser)
7129 , m_allowNumber(true)
7130 , m_allowFinalCommit(false)
7131 { }
7132
7133 bool allowNumber() const { return m_allowNumber; }
7134 bool allowFinalCommit() const { return m_allowFinalCommit; }
7135 CSSPrimitiveValue* top() const { return m_top.get(); }
7136
7137 void commitNumber(CSSParserValue* v)
7138 {
7139 RefPtr<CSSPrimitiveValue> val;
7140 if (v->id == CSSValueAuto)
7141 val = cssValuePool().createIdentifierValue(v->id);
7142 else
7143 val = m_parser->createPrimitiveNumericValue(v);
7144
7145 if (!m_top)
7146 m_top = val;
7147 else if (!m_right)
7148 m_right = val;
7149 else if (!m_bottom)
7150 m_bottom = val;
7151 else {
7152 ASSERT(!m_left);
7153 m_left = val;
7154 }
7155
7156 m_allowNumber = !m_left;
7157 m_allowFinalCommit = true;
7158 }
7159
7160 void setAllowFinalCommit() { m_allowFinalCommit = true; }
7161 void setTop(PassRefPtr<CSSPrimitiveValue> val) { m_top = val; }
7162
7163 PassRefPtr<CSSPrimitiveValue> commitBorderImageQuad()
7164 {
7165 // We need to clone and repeat values for any omissions.
7166 ASSERT(m_top);
7167 if (!m_right) {
7168 m_right = m_top;
7169 m_bottom = m_top;
7170 m_left = m_top;
7171 }
7172 if (!m_bottom) {
7173 m_bottom = m_top;
7174 m_left = m_right;
7175 }
7176 if (!m_left)
7177 m_left = m_right;
7178
7179 // Now build a quad value to hold all four of our primitive values.
7180 RefPtr<Quad> quad = Quad::create();
7181 quad->setTop(m_top);
7182 quad->setRight(m_right);
7183 quad->setBottom(m_bottom);
7184 quad->setLeft(m_left);
7185
7186 // Make our new value now.
7187 return cssValuePool().createValue(quad.release());
7188 }
7189
7190 private:
7191 CSSParser* m_parser;
7192
7193 bool m_allowNumber;
7194 bool m_allowFinalCommit;
7195
7196 RefPtr<CSSPrimitiveValue> m_top;
7197 RefPtr<CSSPrimitiveValue> m_right;
7198 RefPtr<CSSPrimitiveValue> m_bottom;
7199 RefPtr<CSSPrimitiveValue> m_left;
7200 };
7201
7202 bool CSSParser::parseBorderImageQuad(Units validUnits, RefPtr<CSSPrimitiveValue> & result)
7203 {
7204 BorderImageQuadParseContext context(this);
7205 CSSParserValue* val;
7206 while ((val = m_valueList->current())) {
7207 if (context.allowNumber() && (validUnit(val, validUnits, HTMLStandardMod e) || val->id == CSSValueAuto)) {
7208 context.commitNumber(val);
7209 } else if (!inShorthand()) {
7210 // If we're not parsing a shorthand then we are invalid.
7211 return false;
7212 } else {
7213 if (context.allowFinalCommit())
7214 m_valueList->previous(); // The shorthand loop will advance back to this point.
7215 break;
7216 }
7217 m_valueList->next();
7218 }
7219
7220 if (context.allowFinalCommit()) {
7221 // Need to fully commit as a single value.
7222 result = context.commitBorderImageQuad();
7223 return true;
7224 }
7225 return false;
7226 }
7227
7228 bool CSSParser::parseBorderImageWidth(RefPtr<CSSPrimitiveValue>& result)
7229 {
7230 return parseBorderImageQuad(FLength | FNumber | FNonNeg | FPercent, result);
7231 }
7232
7233 bool CSSParser::parseBorderImageOutset(RefPtr<CSSPrimitiveValue>& result)
7234 {
7235 return parseBorderImageQuad(FLength | FNumber | FNonNeg, result);
7236 }
7237
7238 static void completeBorderRadii(RefPtr<CSSPrimitiveValue> radii[4])
7239 {
7240 if (radii[3])
7241 return;
7242 if (!radii[2]) {
7243 if (!radii[1])
7244 radii[1] = radii[0];
7245 radii[2] = radii[0];
7246 }
7247 radii[3] = radii[1];
7248 }
7249
7250 bool CSSParser::parseBorderRadius(CSSPropertyID propId, bool important)
7251 {
7252 unsigned num = m_valueList->size();
7253 if (num > 9)
7254 return false;
7255
7256 ShorthandScope scope(this, propId);
7257 RefPtr<CSSPrimitiveValue> radii[2][4];
7258
7259 unsigned indexAfterSlash = 0;
7260 for (unsigned i = 0; i < num; ++i) {
7261 CSSParserValue* value = m_valueList->valueAt(i);
7262 if (value->unit == CSSParserValue::Operator) {
7263 if (value->iValue != '/')
7264 return false;
7265
7266 if (!i || indexAfterSlash || i + 1 == num || num > i + 5)
7267 return false;
7268
7269 indexAfterSlash = i + 1;
7270 completeBorderRadii(radii[0]);
7271 continue;
7272 }
7273
7274 if (i - indexAfterSlash >= 4)
7275 return false;
7276
7277 if (!validUnit(value, FLength | FPercent | FNonNeg))
7278 return false;
7279
7280 RefPtr<CSSPrimitiveValue> radius = createPrimitiveNumericValue(value);
7281
7282 if (!indexAfterSlash) {
7283 radii[0][i] = radius;
7284
7285 // Legacy syntax: -webkit-border-radius: l1 l2; is equivalent to bor der-radius: l1 / l2;
7286 if (num == 2 && propId == CSSPropertyWebkitBorderRadius) {
7287 indexAfterSlash = 1;
7288 completeBorderRadii(radii[0]);
7289 }
7290 } else
7291 radii[1][i - indexAfterSlash] = radius.release();
7292 }
7293
7294 if (!indexAfterSlash) {
7295 completeBorderRadii(radii[0]);
7296 for (unsigned i = 0; i < 4; ++i)
7297 radii[1][i] = radii[0][i];
7298 } else
7299 completeBorderRadii(radii[1]);
7300
7301 ImplicitScope implicitScope(this, PropertyImplicit);
7302 addProperty(CSSPropertyBorderTopLeftRadius, createPrimitiveValuePair(radii[0 ][0].release(), radii[1][0].release()), important);
7303 addProperty(CSSPropertyBorderTopRightRadius, createPrimitiveValuePair(radii[ 0][1].release(), radii[1][1].release()), important);
7304 addProperty(CSSPropertyBorderBottomRightRadius, createPrimitiveValuePair(rad ii[0][2].release(), radii[1][2].release()), important);
7305 addProperty(CSSPropertyBorderBottomLeftRadius, createPrimitiveValuePair(radi i[0][3].release(), radii[1][3].release()), important);
7306 return true;
7307 }
7308
7309 bool CSSParser::parseAspectRatio(bool important)
7310 {
7311 unsigned num = m_valueList->size();
7312 if (num == 1 && m_valueList->valueAt(0)->id == CSSValueNone) {
7313 addProperty(CSSPropertyWebkitAspectRatio, cssValuePool().createIdentifie rValue(CSSValueNone), important);
7314 return true;
7315 }
7316
7317 if (num != 3)
7318 return false;
7319
7320 CSSParserValue* lvalue = m_valueList->valueAt(0);
7321 CSSParserValue* op = m_valueList->valueAt(1);
7322 CSSParserValue* rvalue = m_valueList->valueAt(2);
7323
7324 if (!isForwardSlashOperator(op))
7325 return false;
7326
7327 if (!validUnit(lvalue, FNumber | FNonNeg) || !validUnit(rvalue, FNumber | FN onNeg))
7328 return false;
7329
7330 if (!lvalue->fValue || !rvalue->fValue)
7331 return false;
7332
7333 addProperty(CSSPropertyWebkitAspectRatio, CSSAspectRatioValue::create(narrow PrecisionToFloat(lvalue->fValue), narrowPrecisionToFloat(rvalue->fValue)), impor tant);
7334
7335 return true;
7336 }
7337
7338 bool CSSParser::parseCounter(CSSPropertyID propId, int defaultValue, bool import ant)
7339 {
7340 enum { ID, VAL } state = ID;
7341
7342 RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
7343 RefPtr<CSSPrimitiveValue> counterName;
7344
7345 while (true) {
7346 CSSParserValue* val = m_valueList->current();
7347 switch (state) {
7348 case ID:
7349 if (val && val->unit == CSSPrimitiveValue::CSS_IDENT) {
7350 counterName = createPrimitiveStringValue(val);
7351 state = VAL;
7352 m_valueList->next();
7353 continue;
7354 }
7355 break;
7356 case VAL: {
7357 int i = defaultValue;
7358 if (val && val->unit == CSSPrimitiveValue::CSS_NUMBER) {
7359 i = clampToInteger(val->fValue);
7360 m_valueList->next();
7361 }
7362
7363 list->append(createPrimitiveValuePair(counterName.release(),
7364 cssValuePool().createValue(i, CSSPrimitiveValue::CSS_NUMBER) ));
7365 state = ID;
7366 continue;
7367 }
7368 }
7369 break;
7370 }
7371
7372 if (list->length() > 0) {
7373 addProperty(propId, list.release(), important);
7374 return true;
7375 }
7376
7377 return false;
7378 }
7379
7380 // This should go away once we drop support for -webkit-gradient
7381 static PassRefPtr<CSSPrimitiveValue> parseDeprecatedGradientPoint(CSSParserValue * a, bool horizontal)
7382 {
7383 RefPtr<CSSPrimitiveValue> result;
7384 if (a->unit == CSSPrimitiveValue::CSS_IDENT) {
7385 if ((equalIgnoringCase(a, "left") && horizontal)
7386 || (equalIgnoringCase(a, "top") && !horizontal))
7387 result = cssValuePool().createValue(0., CSSPrimitiveValue::CSS_PERCE NTAGE);
7388 else if ((equalIgnoringCase(a, "right") && horizontal)
7389 || (equalIgnoringCase(a, "bottom") && !horizontal))
7390 result = cssValuePool().createValue(100., CSSPrimitiveValue::CSS_PER CENTAGE);
7391 else if (equalIgnoringCase(a, "center"))
7392 result = cssValuePool().createValue(50., CSSPrimitiveValue::CSS_PERC ENTAGE);
7393 } else if (a->unit == CSSPrimitiveValue::CSS_NUMBER || a->unit == CSSPrimiti veValue::CSS_PERCENTAGE)
7394 result = cssValuePool().createValue(a->fValue, static_cast<CSSPrimitiveV alue::UnitTypes>(a->unit));
7395 return result;
7396 }
7397
7398 static bool parseDeprecatedGradientColorStop(CSSParser* p, CSSParserValue* a, CS SGradientColorStop& stop)
7399 {
7400 if (a->unit != CSSParserValue::Function)
7401 return false;
7402
7403 if (!equalIgnoringCase(a->function->name, "from(") &&
7404 !equalIgnoringCase(a->function->name, "to(") &&
7405 !equalIgnoringCase(a->function->name, "color-stop("))
7406 return false;
7407
7408 CSSParserValueList* args = a->function->args.get();
7409 if (!args)
7410 return false;
7411
7412 if (equalIgnoringCase(a->function->name, "from(")
7413 || equalIgnoringCase(a->function->name, "to(")) {
7414 // The "from" and "to" stops expect 1 argument.
7415 if (args->size() != 1)
7416 return false;
7417
7418 if (equalIgnoringCase(a->function->name, "from("))
7419 stop.m_position = cssValuePool().createValue(0, CSSPrimitiveValue::C SS_NUMBER);
7420 else
7421 stop.m_position = cssValuePool().createValue(1, CSSPrimitiveValue::C SS_NUMBER);
7422
7423 CSSValueID id = args->current()->id;
7424 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWin dowtext) || id == CSSValueMenu)
7425 stop.m_color = cssValuePool().createIdentifierValue(id);
7426 else
7427 stop.m_color = p->parseColor(args->current());
7428 if (!stop.m_color)
7429 return false;
7430 }
7431
7432 // The "color-stop" function expects 3 arguments.
7433 if (equalIgnoringCase(a->function->name, "color-stop(")) {
7434 if (args->size() != 3)
7435 return false;
7436
7437 CSSParserValue* stopArg = args->current();
7438 if (stopArg->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
7439 stop.m_position = cssValuePool().createValue(stopArg->fValue / 100, CSSPrimitiveValue::CSS_NUMBER);
7440 else if (stopArg->unit == CSSPrimitiveValue::CSS_NUMBER)
7441 stop.m_position = cssValuePool().createValue(stopArg->fValue, CSSPri mitiveValue::CSS_NUMBER);
7442 else
7443 return false;
7444
7445 stopArg = args->next();
7446 if (stopArg->unit != CSSParserValue::Operator || stopArg->iValue != ',')
7447 return false;
7448
7449 stopArg = args->next();
7450 CSSValueID id = stopArg->id;
7451 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWin dowtext) || id == CSSValueMenu)
7452 stop.m_color = cssValuePool().createIdentifierValue(id);
7453 else
7454 stop.m_color = p->parseColor(stopArg);
7455 if (!stop.m_color)
7456 return false;
7457 }
7458
7459 return true;
7460 }
7461
7462 bool CSSParser::parseDeprecatedGradient(CSSParserValueList* valueList, RefPtr<CS SValue>& gradient)
7463 {
7464 // Walk the arguments.
7465 CSSParserValueList* args = valueList->current()->function->args.get();
7466 if (!args || args->size() == 0)
7467 return false;
7468
7469 // The first argument is the gradient type. It is an identifier.
7470 CSSGradientType gradientType;
7471 CSSParserValue* a = args->current();
7472 if (!a || a->unit != CSSPrimitiveValue::CSS_IDENT)
7473 return false;
7474 if (equalIgnoringCase(a, "linear"))
7475 gradientType = CSSDeprecatedLinearGradient;
7476 else if (equalIgnoringCase(a, "radial"))
7477 gradientType = CSSDeprecatedRadialGradient;
7478 else
7479 return false;
7480
7481 RefPtr<CSSGradientValue> result;
7482 switch (gradientType) {
7483 case CSSDeprecatedLinearGradient:
7484 result = CSSLinearGradientValue::create(NonRepeating, gradientType);
7485 break;
7486 case CSSDeprecatedRadialGradient:
7487 result = CSSRadialGradientValue::create(NonRepeating, gradientType);
7488 break;
7489 default:
7490 // The rest of the gradient types shouldn't appear here.
7491 ASSERT_NOT_REACHED();
7492 }
7493
7494 // Comma.
7495 a = args->next();
7496 if (!isComma(a))
7497 return false;
7498
7499 // Next comes the starting point for the gradient as an x y pair. There is no
7500 // comma between the x and the y values.
7501 // First X. It can be left, right, number or percent.
7502 a = args->next();
7503 if (!a)
7504 return false;
7505 RefPtr<CSSPrimitiveValue> point = parseDeprecatedGradientPoint(a, true);
7506 if (!point)
7507 return false;
7508 result->setFirstX(point.release());
7509
7510 // First Y. It can be top, bottom, number or percent.
7511 a = args->next();
7512 if (!a)
7513 return false;
7514 point = parseDeprecatedGradientPoint(a, false);
7515 if (!point)
7516 return false;
7517 result->setFirstY(point.release());
7518
7519 // Comma after the first point.
7520 a = args->next();
7521 if (!isComma(a))
7522 return false;
7523
7524 // For radial gradients only, we now expect a numeric radius.
7525 if (gradientType == CSSDeprecatedRadialGradient) {
7526 a = args->next();
7527 if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
7528 return false;
7529 toCSSRadialGradientValue(result.get())->setFirstRadius(createPrimitiveNu mericValue(a));
7530
7531 // Comma after the first radius.
7532 a = args->next();
7533 if (!isComma(a))
7534 return false;
7535 }
7536
7537 // Next is the ending point for the gradient as an x, y pair.
7538 // Second X. It can be left, right, number or percent.
7539 a = args->next();
7540 if (!a)
7541 return false;
7542 point = parseDeprecatedGradientPoint(a, true);
7543 if (!point)
7544 return false;
7545 result->setSecondX(point.release());
7546
7547 // Second Y. It can be top, bottom, number or percent.
7548 a = args->next();
7549 if (!a)
7550 return false;
7551 point = parseDeprecatedGradientPoint(a, false);
7552 if (!point)
7553 return false;
7554 result->setSecondY(point.release());
7555
7556 // For radial gradients only, we now expect the second radius.
7557 if (gradientType == CSSDeprecatedRadialGradient) {
7558 // Comma after the second point.
7559 a = args->next();
7560 if (!isComma(a))
7561 return false;
7562
7563 a = args->next();
7564 if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
7565 return false;
7566 toCSSRadialGradientValue(result.get())->setSecondRadius(createPrimitiveN umericValue(a));
7567 }
7568
7569 // We now will accept any number of stops (0 or more).
7570 a = args->next();
7571 while (a) {
7572 // Look for the comma before the next stop.
7573 if (!isComma(a))
7574 return false;
7575
7576 // Now examine the stop itself.
7577 a = args->next();
7578 if (!a)
7579 return false;
7580
7581 // The function name needs to be one of "from", "to", or "color-stop."
7582 CSSGradientColorStop stop;
7583 if (!parseDeprecatedGradientColorStop(this, a, stop))
7584 return false;
7585 result->addStop(stop);
7586
7587 // Advance
7588 a = args->next();
7589 }
7590
7591 gradient = result.release();
7592 return true;
7593 }
7594
7595 static PassRefPtr<CSSPrimitiveValue> valueFromSideKeyword(CSSParserValue* a, boo l& isHorizontal)
7596 {
7597 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
7598 return 0;
7599
7600 switch (a->id) {
7601 case CSSValueLeft:
7602 case CSSValueRight:
7603 isHorizontal = true;
7604 break;
7605 case CSSValueTop:
7606 case CSSValueBottom:
7607 isHorizontal = false;
7608 break;
7609 default:
7610 return 0;
7611 }
7612 return cssValuePool().createIdentifierValue(a->id);
7613 }
7614
7615 static PassRefPtr<CSSPrimitiveValue> parseGradientColorOrKeyword(CSSParser* p, C SSParserValue* value)
7616 {
7617 CSSValueID id = value->id;
7618 if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowt ext) || id == CSSValueMenu || id == CSSValueCurrentcolor)
7619 return cssValuePool().createIdentifierValue(id);
7620
7621 return p->parseColor(value);
7622 }
7623
7624 bool CSSParser::parseDeprecatedLinearGradient(CSSParserValueList* valueList, Ref Ptr<CSSValue>& gradient, CSSGradientRepeat repeating)
7625 {
7626 RefPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repea ting, CSSPrefixedLinearGradient);
7627
7628 // Walk the arguments.
7629 CSSParserValueList* args = valueList->current()->function->args.get();
7630 if (!args || !args->size())
7631 return false;
7632
7633 CSSParserValue* a = args->current();
7634 if (!a)
7635 return false;
7636
7637 bool expectComma = false;
7638 // Look for angle.
7639 if (validUnit(a, FAngle, HTMLStandardMode)) {
7640 result->setAngle(createPrimitiveNumericValue(a));
7641
7642 args->next();
7643 expectComma = true;
7644 } else {
7645 // Look one or two optional keywords that indicate a side or corner.
7646 RefPtr<CSSPrimitiveValue> startX, startY;
7647
7648 RefPtr<CSSPrimitiveValue> location;
7649 bool isHorizontal = false;
7650 if ((location = valueFromSideKeyword(a, isHorizontal))) {
7651 if (isHorizontal)
7652 startX = location;
7653 else
7654 startY = location;
7655
7656 if ((a = args->next())) {
7657 if ((location = valueFromSideKeyword(a, isHorizontal))) {
7658 if (isHorizontal) {
7659 if (startX)
7660 return false;
7661 startX = location;
7662 } else {
7663 if (startY)
7664 return false;
7665 startY = location;
7666 }
7667
7668 args->next();
7669 }
7670 }
7671
7672 expectComma = true;
7673 }
7674
7675 if (!startX && !startY)
7676 startY = cssValuePool().createIdentifierValue(CSSValueTop);
7677
7678 result->setFirstX(startX.release());
7679 result->setFirstY(startY.release());
7680 }
7681
7682 if (!parseGradientColorStops(args, result.get(), expectComma))
7683 return false;
7684
7685 if (!result->stopCount())
7686 return false;
7687
7688 gradient = result.release();
7689 return true;
7690 }
7691
7692 bool CSSParser::parseDeprecatedRadialGradient(CSSParserValueList* valueList, Ref Ptr<CSSValue>& gradient, CSSGradientRepeat repeating)
7693 {
7694 RefPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repea ting, CSSPrefixedRadialGradient);
7695
7696 // Walk the arguments.
7697 CSSParserValueList* args = valueList->current()->function->args.get();
7698 if (!args || !args->size())
7699 return false;
7700
7701 CSSParserValue* a = args->current();
7702 if (!a)
7703 return false;
7704
7705 bool expectComma = false;
7706
7707 // Optional background-position
7708 RefPtr<CSSValue> centerX;
7709 RefPtr<CSSValue> centerY;
7710 // parse2ValuesFillPosition advances the args next pointer.
7711 parse2ValuesFillPosition(args, centerX, centerY);
7712 a = args->current();
7713 if (!a)
7714 return false;
7715
7716 if (centerX || centerY) {
7717 // Comma
7718 if (!isComma(a))
7719 return false;
7720
7721 a = args->next();
7722 if (!a)
7723 return false;
7724 }
7725
7726 result->setFirstX(toCSSPrimitiveValue(centerX.get()));
7727 result->setSecondX(toCSSPrimitiveValue(centerX.get()));
7728 // CSS3 radial gradients always share the same start and end point.
7729 result->setFirstY(toCSSPrimitiveValue(centerY.get()));
7730 result->setSecondY(toCSSPrimitiveValue(centerY.get()));
7731
7732 RefPtr<CSSPrimitiveValue> shapeValue;
7733 RefPtr<CSSPrimitiveValue> sizeValue;
7734
7735 // Optional shape and/or size in any order.
7736 for (int i = 0; i < 2; ++i) {
7737 if (a->unit != CSSPrimitiveValue::CSS_IDENT)
7738 break;
7739
7740 bool foundValue = false;
7741 switch (a->id) {
7742 case CSSValueCircle:
7743 case CSSValueEllipse:
7744 shapeValue = cssValuePool().createIdentifierValue(a->id);
7745 foundValue = true;
7746 break;
7747 case CSSValueClosestSide:
7748 case CSSValueClosestCorner:
7749 case CSSValueFarthestSide:
7750 case CSSValueFarthestCorner:
7751 case CSSValueContain:
7752 case CSSValueCover:
7753 sizeValue = cssValuePool().createIdentifierValue(a->id);
7754 foundValue = true;
7755 break;
7756 default:
7757 break;
7758 }
7759
7760 if (foundValue) {
7761 a = args->next();
7762 if (!a)
7763 return false;
7764
7765 expectComma = true;
7766 }
7767 }
7768
7769 result->setShape(shapeValue);
7770 result->setSizingBehavior(sizeValue);
7771
7772 // Or, two lengths or percentages
7773 RefPtr<CSSPrimitiveValue> horizontalSize;
7774 RefPtr<CSSPrimitiveValue> verticalSize;
7775
7776 if (!shapeValue && !sizeValue) {
7777 if (validUnit(a, FLength | FPercent)) {
7778 horizontalSize = createPrimitiveNumericValue(a);
7779 a = args->next();
7780 if (!a)
7781 return false;
7782
7783 expectComma = true;
7784 }
7785
7786 if (validUnit(a, FLength | FPercent)) {
7787 verticalSize = createPrimitiveNumericValue(a);
7788
7789 a = args->next();
7790 if (!a)
7791 return false;
7792 expectComma = true;
7793 }
7794 }
7795
7796 // Must have neither or both.
7797 if (!horizontalSize != !verticalSize)
7798 return false;
7799
7800 result->setEndHorizontalSize(horizontalSize);
7801 result->setEndVerticalSize(verticalSize);
7802
7803 if (!parseGradientColorStops(args, result.get(), expectComma))
7804 return false;
7805
7806 gradient = result.release();
7807 return true;
7808 }
7809
7810 bool CSSParser::parseLinearGradient(CSSParserValueList* valueList, RefPtr<CSSVal ue>& gradient, CSSGradientRepeat repeating)
7811 {
7812 RefPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repea ting, CSSLinearGradient);
7813
7814 CSSParserValueList* args = valueList->current()->function->args.get();
7815 if (!args || !args->size())
7816 return false;
7817
7818 CSSParserValue* a = args->current();
7819 if (!a)
7820 return false;
7821
7822 bool expectComma = false;
7823 // Look for angle.
7824 if (validUnit(a, FAngle, HTMLStandardMode)) {
7825 result->setAngle(createPrimitiveNumericValue(a));
7826
7827 args->next();
7828 expectComma = true;
7829 } else if (a->unit == CSSPrimitiveValue::CSS_IDENT && equalIgnoringCase(a, " to")) {
7830 // to [ [left | right] || [top | bottom] ]
7831 a = args->next();
7832 if (!a)
7833 return false;
7834
7835 RefPtr<CSSPrimitiveValue> endX, endY;
7836 RefPtr<CSSPrimitiveValue> location;
7837 bool isHorizontal = false;
7838
7839 location = valueFromSideKeyword(a, isHorizontal);
7840 if (!location)
7841 return false;
7842
7843 if (isHorizontal)
7844 endX = location;
7845 else
7846 endY = location;
7847
7848 a = args->next();
7849 if (!a)
7850 return false;
7851
7852 location = valueFromSideKeyword(a, isHorizontal);
7853 if (location) {
7854 if (isHorizontal) {
7855 if (endX)
7856 return false;
7857 endX = location;
7858 } else {
7859 if (endY)
7860 return false;
7861 endY = location;
7862 }
7863
7864 args->next();
7865 }
7866
7867 expectComma = true;
7868 result->setFirstX(endX.release());
7869 result->setFirstY(endY.release());
7870 }
7871
7872 if (!parseGradientColorStops(args, result.get(), expectComma))
7873 return false;
7874
7875 if (!result->stopCount())
7876 return false;
7877
7878 gradient = result.release();
7879 return true;
7880 }
7881
7882 bool CSSParser::parseRadialGradient(CSSParserValueList* valueList, RefPtr<CSSVal ue>& gradient, CSSGradientRepeat repeating)
7883 {
7884 RefPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repea ting, CSSRadialGradient);
7885
7886 CSSParserValueList* args = valueList->current()->function->args.get();
7887 if (!args || !args->size())
7888 return false;
7889
7890 CSSParserValue* a = args->current();
7891 if (!a)
7892 return false;
7893
7894 bool expectComma = false;
7895
7896 RefPtr<CSSPrimitiveValue> shapeValue;
7897 RefPtr<CSSPrimitiveValue> sizeValue;
7898 RefPtr<CSSPrimitiveValue> horizontalSize;
7899 RefPtr<CSSPrimitiveValue> verticalSize;
7900
7901 // First part of grammar, the size/shape clause:
7902 // [ circle || <length> ] |
7903 // [ ellipse || [ <length> | <percentage> ]{2} ] |
7904 // [ [ circle | ellipse] || <size-keyword> ]
7905 for (int i = 0; i < 3; ++i) {
7906 if (a->unit == CSSPrimitiveValue::CSS_IDENT) {
7907 bool badIdent = false;
7908 switch (a->id) {
7909 case CSSValueCircle:
7910 case CSSValueEllipse:
7911 if (shapeValue)
7912 return false;
7913 shapeValue = cssValuePool().createIdentifierValue(a->id);
7914 break;
7915 case CSSValueClosestSide:
7916 case CSSValueClosestCorner:
7917 case CSSValueFarthestSide:
7918 case CSSValueFarthestCorner:
7919 if (sizeValue || horizontalSize)
7920 return false;
7921 sizeValue = cssValuePool().createIdentifierValue(a->id);
7922 break;
7923 default:
7924 badIdent = true;
7925 }
7926
7927 if (badIdent)
7928 break;
7929
7930 a = args->next();
7931 if (!a)
7932 return false;
7933 } else if (validUnit(a, FLength | FPercent)) {
7934
7935 if (sizeValue || horizontalSize)
7936 return false;
7937 horizontalSize = createPrimitiveNumericValue(a);
7938
7939 a = args->next();
7940 if (!a)
7941 return false;
7942
7943 if (validUnit(a, FLength | FPercent)) {
7944 verticalSize = createPrimitiveNumericValue(a);
7945 ++i;
7946 a = args->next();
7947 if (!a)
7948 return false;
7949 }
7950 } else
7951 break;
7952 }
7953
7954 // You can specify size as a keyword or a length/percentage, not both.
7955 if (sizeValue && horizontalSize)
7956 return false;
7957 // Circles must have 0 or 1 lengths.
7958 if (shapeValue && shapeValue->getValueID() == CSSValueCircle && verticalSize )
7959 return false;
7960 // Ellipses must have 0 or 2 length/percentages.
7961 if (shapeValue && shapeValue->getValueID() == CSSValueEllipse && horizontalS ize && !verticalSize)
7962 return false;
7963 // If there's only one size, it must be a length.
7964 if (!verticalSize && horizontalSize && horizontalSize->isPercentage())
7965 return false;
7966
7967 result->setShape(shapeValue);
7968 result->setSizingBehavior(sizeValue);
7969 result->setEndHorizontalSize(horizontalSize);
7970 result->setEndVerticalSize(verticalSize);
7971
7972 // Second part of grammar, the center-position clause:
7973 // at <position>
7974 RefPtr<CSSValue> centerX;
7975 RefPtr<CSSValue> centerY;
7976 if (a->unit == CSSPrimitiveValue::CSS_IDENT && equalIgnoringCase(a, "at")) {
7977 a = args->next();
7978 if (!a)
7979 return false;
7980
7981 parseFillPosition(args, centerX, centerY);
7982 if (!(centerX && centerY))
7983 return false;
7984
7985 a = args->current();
7986 if (!a)
7987 return false;
7988 result->setFirstX(toCSSPrimitiveValue(centerX.get()));
7989 result->setFirstY(toCSSPrimitiveValue(centerY.get()));
7990 // Right now, CSS radial gradients have the same start and end centers.
7991 result->setSecondX(toCSSPrimitiveValue(centerX.get()));
7992 result->setSecondY(toCSSPrimitiveValue(centerY.get()));
7993 }
7994
7995 if (shapeValue || sizeValue || horizontalSize || centerX || centerY)
7996 expectComma = true;
7997
7998 if (!parseGradientColorStops(args, result.get(), expectComma))
7999 return false;
8000
8001 gradient = result.release();
8002 return true;
8003 }
8004
8005 bool CSSParser::parseGradientColorStops(CSSParserValueList* valueList, CSSGradie ntValue* gradient, bool expectComma)
8006 {
8007 CSSParserValue* a = valueList->current();
8008
8009 // Now look for color stops.
8010 while (a) {
8011 // Look for the comma before the next stop.
8012 if (expectComma) {
8013 if (!isComma(a))
8014 return false;
8015
8016 a = valueList->next();
8017 if (!a)
8018 return false;
8019 }
8020
8021 // <color-stop> = <color> [ <percentage> | <length> ]?
8022 CSSGradientColorStop stop;
8023 stop.m_color = parseGradientColorOrKeyword(this, a);
8024 if (!stop.m_color)
8025 return false;
8026
8027 a = valueList->next();
8028 if (a) {
8029 if (validUnit(a, FLength | FPercent)) {
8030 stop.m_position = createPrimitiveNumericValue(a);
8031 a = valueList->next();
8032 }
8033 }
8034
8035 gradient->addStop(stop);
8036 expectComma = true;
8037 }
8038
8039 // Must have 2 or more stops to be valid.
8040 return gradient->stopCount() >= 2;
8041 }
8042
8043 bool CSSParser::parseGeneratedImage(CSSParserValueList* valueList, RefPtr<CSSVal ue>& value)
8044 {
8045 CSSParserValue* val = valueList->current();
8046
8047 if (val->unit != CSSParserValue::Function)
8048 return false;
8049
8050 if (equalIgnoringCase(val->function->name, "-webkit-gradient("))
8051 return parseDeprecatedGradient(valueList, value);
8052
8053 if (equalIgnoringCase(val->function->name, "-webkit-linear-gradient("))
8054 return parseDeprecatedLinearGradient(valueList, value, NonRepeating);
8055
8056 if (equalIgnoringCase(val->function->name, "linear-gradient("))
8057 return parseLinearGradient(valueList, value, NonRepeating);
8058
8059 if (equalIgnoringCase(val->function->name, "-webkit-repeating-linear-gradien t("))
8060 return parseDeprecatedLinearGradient(valueList, value, Repeating);
8061
8062 if (equalIgnoringCase(val->function->name, "repeating-linear-gradient("))
8063 return parseLinearGradient(valueList, value, Repeating);
8064
8065 if (equalIgnoringCase(val->function->name, "-webkit-radial-gradient("))
8066 return parseDeprecatedRadialGradient(valueList, value, NonRepeating);
8067
8068 if (equalIgnoringCase(val->function->name, "radial-gradient("))
8069 return parseRadialGradient(valueList, value, NonRepeating);
8070
8071 if (equalIgnoringCase(val->function->name, "-webkit-repeating-radial-gradien t("))
8072 return parseDeprecatedRadialGradient(valueList, value, Repeating);
8073
8074 if (equalIgnoringCase(val->function->name, "repeating-radial-gradient("))
8075 return parseRadialGradient(valueList, value, Repeating);
8076
8077 if (equalIgnoringCase(val->function->name, "-webkit-canvas("))
8078 return parseCanvas(valueList, value);
8079
8080 if (equalIgnoringCase(val->function->name, "-webkit-cross-fade("))
8081 return parseCrossfade(valueList, value);
8082
8083 return false;
8084 }
8085
8086 bool CSSParser::parseCrossfade(CSSParserValueList* valueList, RefPtr<CSSValue>& crossfade)
8087 {
8088 RefPtr<CSSCrossfadeValue> result;
8089
8090 // Walk the arguments.
8091 CSSParserValueList* args = valueList->current()->function->args.get();
8092 if (!args || args->size() != 5)
8093 return false;
8094 CSSParserValue* a = args->current();
8095 RefPtr<CSSValue> fromImageValue;
8096 RefPtr<CSSValue> toImageValue;
8097
8098 // The first argument is the "from" image. It is a fill image.
8099 if (!a || !parseFillImage(args, fromImageValue))
8100 return false;
8101 a = args->next();
8102
8103 // Skip a comma
8104 if (!isComma(a))
8105 return false;
8106 a = args->next();
8107
8108 // The second argument is the "to" image. It is a fill image.
8109 if (!a || !parseFillImage(args, toImageValue))
8110 return false;
8111 a = args->next();
8112
8113 // Skip a comma
8114 if (!isComma(a))
8115 return false;
8116 a = args->next();
8117
8118 // The third argument is the crossfade value. It is a percentage or a fracti onal number.
8119 RefPtr<CSSPrimitiveValue> percentage;
8120 if (!a)
8121 return false;
8122
8123 if (a->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
8124 percentage = cssValuePool().createValue(clampTo<double>(a->fValue / 100, 0, 1), CSSPrimitiveValue::CSS_NUMBER);
8125 else if (a->unit == CSSPrimitiveValue::CSS_NUMBER)
8126 percentage = cssValuePool().createValue(clampTo<double>(a->fValue, 0, 1) , CSSPrimitiveValue::CSS_NUMBER);
8127 else
8128 return false;
8129
8130 result = CSSCrossfadeValue::create(fromImageValue, toImageValue);
8131 result->setPercentage(percentage);
8132
8133 crossfade = result;
8134
8135 return true;
8136 }
8137
8138 bool CSSParser::parseCanvas(CSSParserValueList* valueList, RefPtr<CSSValue>& can vas)
8139 {
8140 // Walk the arguments.
8141 CSSParserValueList* args = valueList->current()->function->args.get();
8142 if (!args || args->size() != 1)
8143 return false;
8144
8145 // The first argument is the canvas name. It is an identifier.
8146 CSSParserValue* value = args->current();
8147 if (!value || value->unit != CSSPrimitiveValue::CSS_IDENT)
8148 return false;
8149
8150 canvas = CSSCanvasValue::create(value->string);
8151 return true;
8152 }
8153
8154 PassRefPtr<CSSValue> CSSParser::parseImageSet(CSSParserValueList* valueList)
8155 {
8156 CSSParserValue* function = valueList->current();
8157
8158 if (function->unit != CSSParserValue::Function)
8159 return 0;
8160
8161 CSSParserValueList* functionArgs = valueList->current()->function->args.get( );
8162 if (!functionArgs || !functionArgs->size() || !functionArgs->current())
8163 return 0;
8164
8165 RefPtr<CSSImageSetValue> imageSet = CSSImageSetValue::create();
8166
8167 CSSParserValue* arg = functionArgs->current();
8168 while (arg) {
8169 if (arg->unit != CSSPrimitiveValue::CSS_URI)
8170 return 0;
8171
8172 RefPtr<CSSImageValue> image = CSSImageValue::create(completeURL(arg->str ing));
8173 imageSet->append(image);
8174
8175 arg = functionArgs->next();
8176 if (!arg || arg->unit != CSSPrimitiveValue::CSS_DIMENSION)
8177 return 0;
8178
8179 double imageScaleFactor = 0;
8180 const String& string = arg->string;
8181 unsigned length = string.length();
8182 if (!length)
8183 return 0;
8184 if (string.is8Bit()) {
8185 const LChar* start = string.characters8();
8186 parseDouble(start, start + length, 'x', imageScaleFactor);
8187 } else {
8188 const UChar* start = string.characters16();
8189 parseDouble(start, start + length, 'x', imageScaleFactor);
8190 }
8191 if (imageScaleFactor <= 0)
8192 return 0;
8193 imageSet->append(cssValuePool().createValue(imageScaleFactor, CSSPrimiti veValue::CSS_NUMBER));
8194
8195 // If there are no more arguments, we're done.
8196 arg = functionArgs->next();
8197 if (!arg)
8198 break;
8199
8200 // If there are more arguments, they should be after a comma.
8201 if (!isComma(arg))
8202 return 0;
8203
8204 // Skip the comma and move on to the next argument.
8205 arg = functionArgs->next();
8206 }
8207
8208 return imageSet.release();
8209 }
8210
8211 class TransformOperationInfo {
8212 public:
8213 TransformOperationInfo(const CSSParserString& name)
8214 : m_type(CSSTransformValue::UnknownTransformOperation)
8215 , m_argCount(1)
8216 , m_allowSingleArgument(false)
8217 , m_unit(CSSParser::FUnknown)
8218 {
8219 const UChar* characters;
8220 unsigned nameLength = name.length();
8221
8222 const unsigned longestNameLength = 12;
8223 UChar characterBuffer[longestNameLength];
8224 if (name.is8Bit()) {
8225 unsigned length = std::min(longestNameLength, nameLength);
8226 const LChar* characters8 = name.characters8();
8227 for (unsigned i = 0; i < length; ++i)
8228 characterBuffer[i] = characters8[i];
8229 characters = characterBuffer;
8230 } else
8231 characters = name.characters16();
8232
8233 SWITCH(characters, nameLength) {
8234 CASE("skew(") {
8235 m_unit = CSSParser::FAngle;
8236 m_type = CSSTransformValue::SkewTransformOperation;
8237 m_allowSingleArgument = true;
8238 m_argCount = 3;
8239 }
8240 CASE("scale(") {
8241 m_unit = CSSParser::FNumber;
8242 m_type = CSSTransformValue::ScaleTransformOperation;
8243 m_allowSingleArgument = true;
8244 m_argCount = 3;
8245 }
8246 CASE("skewx(") {
8247 m_unit = CSSParser::FAngle;
8248 m_type = CSSTransformValue::SkewXTransformOperation;
8249 }
8250 CASE("skewy(") {
8251 m_unit = CSSParser::FAngle;
8252 m_type = CSSTransformValue::SkewYTransformOperation;
8253 }
8254 CASE("matrix(") {
8255 m_unit = CSSParser::FNumber;
8256 m_type = CSSTransformValue::MatrixTransformOperation;
8257 m_argCount = 11;
8258 }
8259 CASE("rotate(") {
8260 m_unit = CSSParser::FAngle;
8261 m_type = CSSTransformValue::RotateTransformOperation;
8262 }
8263 CASE("scalex(") {
8264 m_unit = CSSParser::FNumber;
8265 m_type = CSSTransformValue::ScaleXTransformOperation;
8266 }
8267 CASE("scaley(") {
8268 m_unit = CSSParser::FNumber;
8269 m_type = CSSTransformValue::ScaleYTransformOperation;
8270 }
8271 CASE("scalez(") {
8272 m_unit = CSSParser::FNumber;
8273 m_type = CSSTransformValue::ScaleZTransformOperation;
8274 }
8275 CASE("scale3d(") {
8276 m_unit = CSSParser::FNumber;
8277 m_type = CSSTransformValue::Scale3DTransformOperation;
8278 m_argCount = 5;
8279 }
8280 CASE("rotatex(") {
8281 m_unit = CSSParser::FAngle;
8282 m_type = CSSTransformValue::RotateXTransformOperation;
8283 }
8284 CASE("rotatey(") {
8285 m_unit = CSSParser::FAngle;
8286 m_type = CSSTransformValue::RotateYTransformOperation;
8287 }
8288 CASE("rotatez(") {
8289 m_unit = CSSParser::FAngle;
8290 m_type = CSSTransformValue::RotateZTransformOperation;
8291 }
8292 CASE("matrix3d(") {
8293 m_unit = CSSParser::FNumber;
8294 m_type = CSSTransformValue::Matrix3DTransformOperation;
8295 m_argCount = 31;
8296 }
8297 CASE("rotate3d(") {
8298 m_unit = CSSParser::FNumber;
8299 m_type = CSSTransformValue::Rotate3DTransformOperation;
8300 m_argCount = 7;
8301 }
8302 CASE("translate(") {
8303 m_unit = CSSParser::FLength | CSSParser::FPercent;
8304 m_type = CSSTransformValue::TranslateTransformOperation;
8305 m_allowSingleArgument = true;
8306 m_argCount = 3;
8307 }
8308 CASE("translatex(") {
8309 m_unit = CSSParser::FLength | CSSParser::FPercent;
8310 m_type = CSSTransformValue::TranslateXTransformOperation;
8311 }
8312 CASE("translatey(") {
8313 m_unit = CSSParser::FLength | CSSParser::FPercent;
8314 m_type = CSSTransformValue::TranslateYTransformOperation;
8315 }
8316 CASE("translatez(") {
8317 m_unit = CSSParser::FLength | CSSParser::FPercent;
8318 m_type = CSSTransformValue::TranslateZTransformOperation;
8319 }
8320 CASE("perspective(") {
8321 m_unit = CSSParser::FNumber;
8322 m_type = CSSTransformValue::PerspectiveTransformOperation;
8323 }
8324 CASE("translate3d(") {
8325 m_unit = CSSParser::FLength | CSSParser::FPercent;
8326 m_type = CSSTransformValue::Translate3DTransformOperation;
8327 m_argCount = 5;
8328 }
8329 }
8330 }
8331
8332 CSSTransformValue::TransformOperationType type() const { return m_type; }
8333 unsigned argCount() const { return m_argCount; }
8334 CSSParser::Units unit() const { return m_unit; }
8335
8336 bool unknown() const { return m_type == CSSTransformValue::UnknownTransformO peration; }
8337 bool hasCorrectArgCount(unsigned argCount) { return m_argCount == argCount | | (m_allowSingleArgument && argCount == 1); }
8338
8339 private:
8340 CSSTransformValue::TransformOperationType m_type;
8341 unsigned m_argCount;
8342 bool m_allowSingleArgument;
8343 CSSParser::Units m_unit;
8344 };
8345
8346 PassRefPtr<CSSValueList> CSSParser::parseTransform()
8347 {
8348 if (!m_valueList)
8349 return 0;
8350
8351 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
8352 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
8353 RefPtr<CSSValue> parsedTransformValue = parseTransformValue(value);
8354 if (!parsedTransformValue)
8355 return 0;
8356
8357 list->append(parsedTransformValue.release());
8358 }
8359
8360 return list.release();
8361 }
8362
8363 PassRefPtr<CSSValue> CSSParser::parseTransformValue(CSSParserValue *value)
8364 {
8365 if (value->unit != CSSParserValue::Function || !value->function)
8366 return 0;
8367
8368 // Every primitive requires at least one argument.
8369 CSSParserValueList* args = value->function->args.get();
8370 if (!args)
8371 return 0;
8372
8373 // See if the specified primitive is one we understand.
8374 TransformOperationInfo info(value->function->name);
8375 if (info.unknown())
8376 return 0;
8377
8378 if (!info.hasCorrectArgCount(args->size()))
8379 return 0;
8380
8381 // The transform is a list of functional primitives that specify transform o perations.
8382 // We collect a list of CSSTransformValues, where each value specifies a sin gle operation.
8383
8384 // Create the new CSSTransformValue for this operation and add it to our lis t.
8385 RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(info.ty pe());
8386
8387 // Snag our values.
8388 CSSParserValue* a = args->current();
8389 unsigned argNumber = 0;
8390 while (a) {
8391 CSSParser::Units unit = info.unit();
8392
8393 if (info.type() == CSSTransformValue::Rotate3DTransformOperation && argN umber == 3) {
8394 // 4th param of rotate3d() is an angle rather than a bare number, va lidate it as such
8395 if (!validUnit(a, FAngle, HTMLStandardMode))
8396 return 0;
8397 } else if (info.type() == CSSTransformValue::Translate3DTransformOperati on && argNumber == 2) {
8398 // 3rd param of translate3d() cannot be a percentage
8399 if (!validUnit(a, FLength, HTMLStandardMode))
8400 return 0;
8401 } else if (info.type() == CSSTransformValue::TranslateZTransformOperatio n && !argNumber) {
8402 // 1st param of translateZ() cannot be a percentage
8403 if (!validUnit(a, FLength, HTMLStandardMode))
8404 return 0;
8405 } else if (info.type() == CSSTransformValue::PerspectiveTransformOperati on && !argNumber) {
8406 // 1st param of perspective() must be a non-negative number (depreca ted) or length.
8407 if (!validUnit(a, FNumber | FLength | FNonNeg, HTMLStandardMode))
8408 return 0;
8409 } else if (!validUnit(a, unit, HTMLStandardMode))
8410 return 0;
8411
8412 // Add the value to the current transform operation.
8413 transformValue->append(createPrimitiveNumericValue(a));
8414
8415 a = args->next();
8416 if (!a)
8417 break;
8418 if (a->unit != CSSParserValue::Operator || a->iValue != ',')
8419 return 0;
8420 a = args->next();
8421
8422 argNumber++;
8423 }
8424
8425 return transformValue.release();
8426 }
8427
8428 bool CSSParser::isBlendMode(CSSValueID valueID)
8429 {
8430 return (valueID >= CSSValueMultiply && valueID <= CSSValueLuminosity)
8431 || valueID == CSSValueNormal
8432 || valueID == CSSValueOverlay;
8433 }
8434
8435 bool CSSParser::isCompositeOperator(CSSValueID valueID)
8436 {
8437 // FIXME: Add CSSValueDestination and CSSValueLighter when the Compositing s pec updates.
8438 return valueID >= CSSValueClear && valueID <= CSSValueXor;
8439 }
8440
8441 static void filterInfoForName(const CSSParserString& name, CSSFilterValue::Filte rOperationType& filterType, unsigned& maximumArgumentCount)
8442 {
8443 if (equalIgnoringCase(name, "grayscale("))
8444 filterType = CSSFilterValue::GrayscaleFilterOperation;
8445 else if (equalIgnoringCase(name, "sepia("))
8446 filterType = CSSFilterValue::SepiaFilterOperation;
8447 else if (equalIgnoringCase(name, "saturate("))
8448 filterType = CSSFilterValue::SaturateFilterOperation;
8449 else if (equalIgnoringCase(name, "hue-rotate("))
8450 filterType = CSSFilterValue::HueRotateFilterOperation;
8451 else if (equalIgnoringCase(name, "invert("))
8452 filterType = CSSFilterValue::InvertFilterOperation;
8453 else if (equalIgnoringCase(name, "opacity("))
8454 filterType = CSSFilterValue::OpacityFilterOperation;
8455 else if (equalIgnoringCase(name, "brightness("))
8456 filterType = CSSFilterValue::BrightnessFilterOperation;
8457 else if (equalIgnoringCase(name, "contrast("))
8458 filterType = CSSFilterValue::ContrastFilterOperation;
8459 else if (equalIgnoringCase(name, "blur("))
8460 filterType = CSSFilterValue::BlurFilterOperation;
8461 else if (equalIgnoringCase(name, "drop-shadow(")) {
8462 filterType = CSSFilterValue::DropShadowFilterOperation;
8463 maximumArgumentCount = 4; // x-offset, y-offset, blur-radius, color -- spread and inset style not allowed.
8464 }
8465 else if (equalIgnoringCase(name, "custom("))
8466 filterType = CSSFilterValue::CustomFilterOperation;
8467 }
8468
8469 static bool acceptCommaOperator(CSSParserValueList* argsList)
8470 {
8471 if (CSSParserValue* arg = argsList->current()) {
8472 if (!isComma(arg))
8473 return false;
8474 argsList->next();
8475 }
8476 return true;
8477 }
8478
8479 PassRefPtr<CSSArrayFunctionValue> CSSParser::parseCustomFilterArrayFunction(CSSP arserValue* value)
8480 {
8481 ASSERT(value->unit == CSSParserValue::Function && value->function);
8482
8483 if (!equalIgnoringCase(value->function->name, "array("))
8484 return 0;
8485
8486 CSSParserValueList* arrayArgsParserValueList = value->function->args.get();
8487 if (!arrayArgsParserValueList || !arrayArgsParserValueList->size())
8488 return 0;
8489
8490 // array() values are comma separated.
8491 RefPtr<CSSArrayFunctionValue> arrayFunction = CSSArrayFunctionValue::create( );
8492 while (true) {
8493 // We parse pairs <Value, Comma> at each step.
8494 CSSParserValue* currentParserValue = arrayArgsParserValueList->current() ;
8495 if (!currentParserValue || !validUnit(currentParserValue, FNumber, HTMLS tandardMode))
8496 return 0;
8497
8498 RefPtr<CSSValue> arrayValue = cssValuePool().createValue(currentParserVa lue->fValue, CSSPrimitiveValue::CSS_NUMBER);
8499 arrayFunction->append(arrayValue.release());
8500
8501 CSSParserValue* nextParserValue = arrayArgsParserValueList->next();
8502 if (!nextParserValue)
8503 break;
8504
8505 if (!isComma(nextParserValue))
8506 return 0;
8507
8508 arrayArgsParserValueList->next();
8509 }
8510
8511 return arrayFunction;
8512 }
8513
8514 PassRefPtr<CSSMixFunctionValue> CSSParser::parseMixFunction(CSSParserValue* valu e)
8515 {
8516 ASSERT(value->unit == CSSParserValue::Function && value->function);
8517
8518 if (!equalIgnoringCase(value->function->name, "mix("))
8519 return 0;
8520
8521 CSSParserValueList* argsList = value->function->args.get();
8522 if (!argsList)
8523 return 0;
8524
8525 unsigned numArgs = argsList->size();
8526 if (numArgs < 1 || numArgs > 3)
8527 return 0;
8528
8529 RefPtr<CSSMixFunctionValue> mixFunction = CSSMixFunctionValue::create();
8530
8531 bool hasBlendMode = false;
8532 bool hasAlphaCompositing = false;
8533
8534 for (CSSParserValue* arg = argsList->current(); arg; arg = argsList->next()) {
8535 RefPtr<CSSValue> value;
8536
8537 unsigned argNumber = argsList->currentIndex();
8538 if (!argNumber) {
8539 if (arg->unit == CSSPrimitiveValue::CSS_URI) {
8540 KURL shaderURL = completeURL(arg->string);
8541 value = CSSShaderValue::create(shaderURL.string());
8542 }
8543 } else if (argNumber == 1 || argNumber == 2) {
8544 if (!hasBlendMode && isBlendMode(arg->id)) {
8545 hasBlendMode = true;
8546 value = cssValuePool().createIdentifierValue(arg->id);
8547 } else if (!hasAlphaCompositing && isCompositeOperator(arg->id)) {
8548 hasAlphaCompositing = true;
8549 value = cssValuePool().createIdentifierValue(arg->id);
8550 }
8551 }
8552
8553 if (!value)
8554 return 0;
8555
8556 mixFunction->append(value.release());
8557 }
8558
8559 return mixFunction;
8560 }
8561
8562 PassRefPtr<CSSValueList> CSSParser::parseCustomFilterParameters(CSSParserValueLi st* argsList)
8563 {
8564 //
8565 // params: [<param-def>[,<param-def>*]]
8566 // param-def: <param-name>wsp<param-value>
8567 // param-name: <ident>
8568 // param-value: true|false[wsp+true|false]{0-3} |
8569 // <number>[wsp+<number>]{0-3} |
8570 // <array> |
8571 // <transform> |
8572 // <texture(<uri>)>
8573 // array: 'array('<number>[wsp<number>]*')'
8574 // css-3d-transform: <transform-function>;[<transform-function>]*
8575 // transform: <css-3d-transform> | <mat>
8576 // mat: 'mat2('<number>(,<number>){3}')' |
8577 // 'mat3('<number>(,<number>){8}')' |
8578 // 'mat4('<number>(,<number>){15}')' )
8579 //
8580
8581 RefPtr<CSSValueList> paramList = CSSValueList::createCommaSeparated();
8582
8583 while (CSSParserValue* arg = argsList->current()) {
8584 if (arg->unit != CSSPrimitiveValue::CSS_IDENT)
8585 return 0;
8586
8587 RefPtr<CSSValueList> parameter = CSSValueList::createSpaceSeparated();
8588 parameter->append(createPrimitiveStringValue(arg));
8589
8590 arg = argsList->next();
8591 if (!arg)
8592 return 0;
8593
8594 RefPtr<CSSValue> parameterValue;
8595
8596 if (arg->unit == CSSParserValue::Function && arg->function) {
8597 // FIXME: Implement parsing for the other parameter types.
8598 // textures: https://bugs.webkit.org/show_bug.cgi?id=71442
8599 // mat2, mat3, mat4: https://bugs.webkit.org/show_bug.cgi?id=71444
8600 if (equalIgnoringCase(arg->function->name, "array(")) {
8601 parameterValue = parseCustomFilterArrayFunction(arg);
8602 // This parsing step only consumes function arguments,
8603 // argsList is therefore moved forward explicitely.
8604 argsList->next();
8605 } else
8606 parameterValue = parseCustomFilterTransform(argsList);
8607 } else {
8608 RefPtr<CSSValueList> paramValueList = CSSValueList::createSpaceSepar ated();
8609 arg = argsList->current();
8610 while (arg) {
8611 // If we hit a comma, it means that we finished this parameter's values.
8612 if (isComma(arg))
8613 break;
8614 if (!validUnit(arg, FNumber, HTMLStandardMode))
8615 return 0;
8616 paramValueList->append(cssValuePool().createValue(arg->fValue, C SSPrimitiveValue::CSS_NUMBER));
8617 arg = argsList->next();
8618 }
8619 if (!paramValueList->length() || paramValueList->length() > 4)
8620 return 0;
8621 parameterValue = paramValueList.release();
8622 }
8623
8624 if (!parameterValue || !acceptCommaOperator(argsList))
8625 return 0;
8626
8627 parameter->append(parameterValue.release());
8628 paramList->append(parameter.release());
8629 }
8630
8631 return paramList;
8632 }
8633
8634 PassRefPtr<CSSFilterValue> CSSParser::parseCustomFilterFunctionWithAtRuleReferen ceSyntax(CSSParserValue* value)
8635 {
8636 //
8637 // Custom filter function "at-rule reference" syntax:
8638 //
8639 // custom(<filter-name>wsp[,wsp<params>])
8640 //
8641 // filter-name: <filter-name>
8642 // params: See the comment in CSSParser::parseCustomFilterParameters.
8643 //
8644
8645 ASSERT(value->function);
8646
8647 CSSParserValueList* argsList = value->function->args.get();
8648 if (!argsList || !argsList->size())
8649 return 0;
8650
8651 // 1. Parse the filter name.
8652 CSSParserValue* arg = argsList->current();
8653 if (arg->unit != CSSPrimitiveValue::CSS_IDENT)
8654 return 0;
8655
8656 RefPtr<CSSFilterValue> filterValue = CSSFilterValue::create(CSSFilterValue:: CustomFilterOperation);
8657
8658 RefPtr<CSSValue> filterName = createPrimitiveStringValue(arg);
8659 filterValue->append(filterName);
8660 argsList->next();
8661
8662 if (!acceptCommaOperator(argsList))
8663 return 0;
8664
8665 // 2. Parse the parameters.
8666 RefPtr<CSSValueList> paramList = parseCustomFilterParameters(argsList);
8667 if (!paramList)
8668 return 0;
8669
8670 if (paramList->length())
8671 filterValue->append(paramList.release());
8672
8673 return filterValue;
8674 }
8675
8676 // FIXME: The custom filters "inline" syntax is deprecated. We will remove it ev entually.
8677 PassRefPtr<CSSFilterValue> CSSParser::parseCustomFilterFunctionWithInlineSyntax( CSSParserValue* value)
8678 {
8679 //
8680 // Custom filter function "inline" syntax:
8681 //
8682 // custom(<vertex-shader>[wsp<fragment-shader>][,<vertex-mesh>][,<params>])
8683 //
8684 // vertexShader: <uri> | none
8685 // fragmentShader: <uri> | none | mix(<uri> [ <blend-mode> || <alpha-compos iting> ]?)
8686 //
8687 // blend-mode: normal | multiply | screen | overlay | darken | lighten | col or-dodge |
8688 // color-burn | hard-light | soft-light | difference | exclusion | hue |
8689 // saturation | color | luminosity
8690 // alpha-compositing: clear | src | dst | src-over | dst-over | src-in | dst -in |
8691 // src-out | dst-out | src-atop | dst-atop | xor | plus
8692 //
8693 // vertexMesh: +<integer>{1,2}[wsp<box>][wsp'detached']
8694 // box: filter-box | border-box | padding-box | content-box
8695 //
8696 // params: See the comment in CSSParser::parseCustomFilterParameters.
8697 //
8698
8699 ASSERT(value->function);
8700
8701 CSSParserValueList* argsList = value->function->args.get();
8702 if (!argsList)
8703 return 0;
8704
8705 RefPtr<CSSFilterValue> filterValue = CSSFilterValue::create(CSSFilterValue:: CustomFilterOperation);
8706
8707 // 1. Parse the shader URLs: <vertex-shader>[wsp<fragment-shader>]
8708 RefPtr<CSSValueList> shadersList = CSSValueList::createSpaceSeparated();
8709 bool hadAtLeastOneCustomShader = false;
8710 CSSParserValue* arg;
8711 for (arg = argsList->current(); arg; arg = argsList->next()) {
8712 RefPtr<CSSValue> value;
8713 if (arg->id == CSSValueNone)
8714 value = cssValuePool().createIdentifierValue(CSSValueNone);
8715 else if (arg->unit == CSSPrimitiveValue::CSS_URI) {
8716 KURL shaderURL = completeURL(arg->string);
8717 value = CSSShaderValue::create(shaderURL.string());
8718 hadAtLeastOneCustomShader = true;
8719 } else if (argsList->currentIndex() == 1 && arg->unit == CSSParserValue: :Function) {
8720 if (!(value = parseMixFunction(arg)))
8721 return 0;
8722 hadAtLeastOneCustomShader = true;
8723 }
8724
8725 if (!value)
8726 break;
8727 shadersList->append(value.release());
8728 }
8729
8730 if (!shadersList->length() || !hadAtLeastOneCustomShader || shadersList->len gth() > 2 || !acceptCommaOperator(argsList))
8731 return 0;
8732
8733 filterValue->append(shadersList.release());
8734
8735 // 2. Parse the mesh size <vertex-mesh>
8736 RefPtr<CSSValueList> meshSizeList = CSSValueList::createSpaceSeparated();
8737
8738 for (arg = argsList->current(); arg; arg = argsList->next()) {
8739 if (!validUnit(arg, FInteger | FNonNeg, HTMLStandardMode))
8740 break;
8741 int integerValue = clampToInteger(arg->fValue);
8742 // According to the specification we can only accept positive non-zero v alues.
8743 if (integerValue < 1)
8744 return 0;
8745 meshSizeList->append(cssValuePool().createValue(integerValue, CSSPrimiti veValue::CSS_NUMBER));
8746 }
8747
8748 if (meshSizeList->length() > 2)
8749 return 0;
8750
8751 // FIXME: For legacy content, we accept the mesh box types. We don't do anyt hing else with them.
8752 // Eventually, we'll remove them completely.
8753 // https://bugs.webkit.org/show_bug.cgi?id=103778
8754 if ((arg = argsList->current()) && (arg->id == CSSValueBorderBox || arg->id == CSSValuePaddingBox
8755 || arg->id == CSSValueContentBox || arg->id == CSSValueFilterBox))
8756 argsList->next();
8757
8758 if ((arg = argsList->current()) && arg->id == CSSValueDetached) {
8759 meshSizeList->append(cssValuePool().createIdentifierValue(arg->id));
8760 argsList->next();
8761 }
8762
8763 if (meshSizeList->length()) {
8764 if (!acceptCommaOperator(argsList))
8765 return 0;
8766 filterValue->append(meshSizeList.release());
8767 }
8768
8769 // 3. Parse the parameters.
8770 RefPtr<CSSValueList> paramList = parseCustomFilterParameters(argsList);
8771 if (!paramList)
8772 return 0;
8773
8774 if (paramList->length())
8775 filterValue->append(paramList.release());
8776
8777 return filterValue;
8778 }
8779
8780 PassRefPtr<CSSFilterValue> CSSParser::parseCustomFilterFunction(CSSParserValue* value)
8781 {
8782 ASSERT(value->function);
8783
8784 // Look ahead to determine which syntax the custom function is using.
8785 // Both the at-rule reference syntax and the inline syntax require at least one argument.
8786 CSSParserValueList* argsList = value->function->args.get();
8787 if (!argsList || !argsList->size())
8788 return 0;
8789
8790 // The at-rule reference syntax expects a single ident or an ident followed by a comma.
8791 // e.g. custom(my-filter) or custom(my-filter, ...)
8792 // In contrast, when the inline syntax starts with an ident like "none", it expects a uri or a mix function next.
8793 // e.g. custom(none url(...)) or custom(none mix(...)
8794 bool isAtRuleReferenceSyntax = argsList->valueAt(0)->unit == CSSPrimitiveVal ue::CSS_IDENT
8795 && (argsList->size() == 1 || isComma(argsList->valueAt(1)));
8796 return isAtRuleReferenceSyntax ? parseCustomFilterFunctionWithAtRuleReferenc eSyntax(value) : parseCustomFilterFunctionWithInlineSyntax(value);
8797 }
8798
8799 PassRefPtr<CSSValueList> CSSParser::parseCustomFilterTransform(CSSParserValueLis t* valueList)
8800 {
8801 if (!valueList)
8802 return 0;
8803
8804 // CSS Shaders' custom() transforms are space separated and comma terminated .
8805 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
8806 for (CSSParserValue* value = valueList->current(); value; value = valueList- >next()) {
8807 if (isComma(value))
8808 break;
8809
8810 RefPtr<CSSValue> parsedTransformValue = parseTransformValue(value);
8811 if (!parsedTransformValue)
8812 return 0;
8813
8814 list->append(parsedTransformValue.release());
8815 }
8816
8817 return list.release();
8818 }
8819
8820 PassRefPtr<CSSShaderValue> CSSParser::parseFilterRuleSrcUriAndFormat(CSSParserVa lueList* valueList)
8821 {
8822 CSSParserValue* value = valueList->current();
8823 ASSERT(value && value->unit == CSSPrimitiveValue::CSS_URI);
8824 RefPtr<CSSShaderValue> shaderValue = CSSShaderValue::create(completeURL(valu e->string));
8825
8826 value = valueList->next();
8827 if (value && value->unit == CSSParserValue::Function && equalIgnoringCase(va lue->function->name, "format(")) {
8828 CSSParserValueList* args = value->function->args.get();
8829 if (!args || args->size() != 1)
8830 return 0;
8831
8832 CSSParserValue* arg = args->current();
8833 if (arg->unit != CSSPrimitiveValue::CSS_STRING)
8834 return 0;
8835
8836 shaderValue->setFormat(arg->string);
8837 valueList->next();
8838 }
8839
8840 return shaderValue.release();
8841 }
8842
8843 bool CSSParser::parseFilterRuleSrc()
8844 {
8845 RefPtr<CSSValueList> srcList = CSSValueList::createCommaSeparated();
8846
8847 CSSParserValue* value = m_valueList->current();
8848 while (value) {
8849 if (value->unit != CSSPrimitiveValue::CSS_URI)
8850 return false;
8851
8852 RefPtr<CSSShaderValue> shaderValue = parseFilterRuleSrcUriAndFormat(m_va lueList.get());
8853 if (!shaderValue)
8854 return false;
8855 srcList->append(shaderValue.release());
8856
8857 if (!acceptCommaOperator(m_valueList.get()))
8858 return false;
8859
8860 value = m_valueList->current();
8861 }
8862
8863 if (!srcList->length())
8864 return false;
8865
8866 addProperty(CSSPropertySrc, srcList.release(), m_important);
8867 return true;
8868 }
8869
8870 StyleRuleBase* CSSParser::createFilterRule(const CSSParserString& filterName)
8871 {
8872 RefPtr<StyleRuleFilter> rule = StyleRuleFilter::create(filterName);
8873 rule->setProperties(createStylePropertySet());
8874 clearProperties();
8875 StyleRuleFilter* result = rule.get();
8876 m_parsedRules.append(rule.release());
8877 return result;
8878 }
8879
8880
8881 PassRefPtr<CSSFilterValue> CSSParser::parseBuiltinFilterArguments(CSSParserValue List* args, CSSFilterValue::FilterOperationType filterType)
8882 {
8883 RefPtr<CSSFilterValue> filterValue = CSSFilterValue::create(filterType);
8884 ASSERT(args);
8885
8886 switch (filterType) {
8887 case CSSFilterValue::GrayscaleFilterOperation:
8888 case CSSFilterValue::SepiaFilterOperation:
8889 case CSSFilterValue::SaturateFilterOperation:
8890 case CSSFilterValue::InvertFilterOperation:
8891 case CSSFilterValue::OpacityFilterOperation:
8892 case CSSFilterValue::ContrastFilterOperation: {
8893 // One optional argument, 0-1 or 0%-100%, if missing use 100%.
8894 if (args->size() > 1)
8895 return 0;
8896
8897 if (args->size()) {
8898 CSSParserValue* value = args->current();
8899 if (!validUnit(value, FNumber | FPercent | FNonNeg, HTMLStandardMode ))
8900 return 0;
8901
8902 double amount = value->fValue;
8903
8904 // Saturate and Contrast allow values over 100%.
8905 if (filterType != CSSFilterValue::SaturateFilterOperation
8906 && filterType != CSSFilterValue::ContrastFilterOperation) {
8907 double maxAllowed = value->unit == CSSPrimitiveValue::CSS_PERCEN TAGE ? 100.0 : 1.0;
8908 if (amount > maxAllowed)
8909 return 0;
8910 }
8911
8912 filterValue->append(cssValuePool().createValue(amount, static_cast<C SSPrimitiveValue::UnitTypes>(value->unit)));
8913 }
8914 break;
8915 }
8916 case CSSFilterValue::BrightnessFilterOperation: {
8917 // One optional argument, if missing use 100%.
8918 if (args->size() > 1)
8919 return 0;
8920
8921 if (args->size()) {
8922 CSSParserValue* value = args->current();
8923 if (!validUnit(value, FNumber | FPercent, HTMLStandardMode))
8924 return 0;
8925
8926 filterValue->append(cssValuePool().createValue(value->fValue, static _cast<CSSPrimitiveValue::UnitTypes>(value->unit)));
8927 }
8928 break;
8929 }
8930 case CSSFilterValue::HueRotateFilterOperation: {
8931 // hue-rotate() takes one optional angle.
8932 if (args->size() > 1)
8933 return 0;
8934
8935 if (args->size()) {
8936 CSSParserValue* argument = args->current();
8937 if (!validUnit(argument, FAngle, HTMLStandardMode))
8938 return 0;
8939
8940 filterValue->append(createPrimitiveNumericValue(argument));
8941 }
8942 break;
8943 }
8944 case CSSFilterValue::BlurFilterOperation: {
8945 // Blur takes a single length. Zero parameters are allowed.
8946 if (args->size() > 1)
8947 return 0;
8948
8949 if (args->size()) {
8950 CSSParserValue* argument = args->current();
8951 if (!validUnit(argument, FLength | FNonNeg, HTMLStandardMode))
8952 return 0;
8953
8954 filterValue->append(createPrimitiveNumericValue(argument));
8955 }
8956 break;
8957 }
8958 case CSSFilterValue::DropShadowFilterOperation: {
8959 // drop-shadow() takes a single shadow.
8960 RefPtr<CSSValueList> shadowValueList = parseShadow(args, CSSPropertyWebk itFilter);
8961 if (!shadowValueList || shadowValueList->length() != 1)
8962 return 0;
8963
8964 filterValue->append((shadowValueList.release())->itemWithoutBoundsCheck( 0));
8965 break;
8966 }
8967 default:
8968 ASSERT_NOT_REACHED();
8969 }
8970 return filterValue.release();
8971 }
8972
8973 PassRefPtr<CSSValueList> CSSParser::parseFilter()
8974 {
8975 if (!m_valueList)
8976 return 0;
8977
8978 // The filter is a list of functional primitives that specify individual ope rations.
8979 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
8980 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
8981 if (value->unit != CSSPrimitiveValue::CSS_URI && (value->unit != CSSPars erValue::Function || !value->function))
8982 return 0;
8983
8984 CSSFilterValue::FilterOperationType filterType = CSSFilterValue::Unknown FilterOperation;
8985
8986 // See if the specified primitive is one we understand.
8987 if (value->unit == CSSPrimitiveValue::CSS_URI) {
8988 RefPtr<CSSFilterValue> referenceFilterValue = CSSFilterValue::create (CSSFilterValue::ReferenceFilterOperation);
8989 list->append(referenceFilterValue);
8990 referenceFilterValue->append(CSSSVGDocumentValue::create(value->stri ng));
8991 } else {
8992 const CSSParserString name = value->function->name;
8993 unsigned maximumArgumentCount = 1;
8994
8995 filterInfoForName(name, filterType, maximumArgumentCount);
8996
8997 if (filterType == CSSFilterValue::UnknownFilterOperation)
8998 return 0;
8999
9000 if (filterType == CSSFilterValue::CustomFilterOperation) {
9001 // Make sure parsing fails if custom filters are disabled.
9002 if (!RuntimeEnabledFeatures::cssCustomFilterEnabled())
9003 return 0;
9004
9005 RefPtr<CSSFilterValue> filterValue = parseCustomFilterFunction(v alue);
9006 if (!filterValue)
9007 return 0;
9008 list->append(filterValue.release());
9009 continue;
9010 }
9011 CSSParserValueList* args = value->function->args.get();
9012 if (!args)
9013 return 0;
9014
9015 RefPtr<CSSFilterValue> filterValue = parseBuiltinFilterArguments(arg s, filterType);
9016 if (!filterValue)
9017 return 0;
9018
9019 list->append(filterValue);
9020 }
9021 }
9022
9023 return list.release();
9024 }
9025
9026 static bool validFlowName(const String& flowName)
9027 {
9028 return !(equalIgnoringCase(flowName, "auto")
9029 || equalIgnoringCase(flowName, "default")
9030 || equalIgnoringCase(flowName, "inherit")
9031 || equalIgnoringCase(flowName, "initial")
9032 || equalIgnoringCase(flowName, "none"));
9033 }
9034
9035 bool CSSParser::parseFlowThread(const String& flowName)
9036 {
9037 setupParser("@-internal-decls -webkit-flow-into:", flowName, "");
9038 cssyyparse(this);
9039
9040 m_rule = 0;
9041
9042 return ((m_parsedProperties.size() == 1) && (m_parsedProperties.first().id() == CSSPropertyWebkitFlowInto));
9043 }
9044
9045 // none | <ident>
9046 bool CSSParser::parseFlowThread(CSSPropertyID propId, bool important)
9047 {
9048 ASSERT(propId == CSSPropertyWebkitFlowInto);
9049 ASSERT(RuntimeEnabledFeatures::cssRegionsEnabled());
9050
9051 if (m_valueList->size() != 1)
9052 return false;
9053
9054 CSSParserValue* value = m_valueList->current();
9055 if (!value)
9056 return false;
9057
9058 if (value->unit != CSSPrimitiveValue::CSS_IDENT)
9059 return false;
9060
9061 if (value->id == CSSValueNone) {
9062 addProperty(propId, cssValuePool().createIdentifierValue(value->id), imp ortant);
9063 return true;
9064 }
9065
9066 String inputProperty = String(value->string);
9067 if (!inputProperty.isEmpty()) {
9068 if (!validFlowName(inputProperty))
9069 return false;
9070 addProperty(propId, cssValuePool().createValue(inputProperty, CSSPrimiti veValue::CSS_STRING), important);
9071 } else
9072 addProperty(propId, cssValuePool().createIdentifierValue(CSSValueNone), important);
9073
9074 return true;
9075 }
9076
9077 // -webkit-flow-from: none | <ident>
9078 bool CSSParser::parseRegionThread(CSSPropertyID propId, bool important)
9079 {
9080 ASSERT(propId == CSSPropertyWebkitFlowFrom);
9081 ASSERT(RuntimeEnabledFeatures::cssRegionsEnabled());
9082
9083 if (m_valueList->size() != 1)
9084 return false;
9085
9086 CSSParserValue* value = m_valueList->current();
9087 if (!value)
9088 return false;
9089
9090 if (value->unit != CSSPrimitiveValue::CSS_IDENT)
9091 return false;
9092
9093 if (value->id == CSSValueNone)
9094 addProperty(propId, cssValuePool().createIdentifierValue(value->id), imp ortant);
9095 else {
9096 String inputProperty = String(value->string);
9097 if (!inputProperty.isEmpty()) {
9098 if (!validFlowName(inputProperty))
9099 return false;
9100 addProperty(propId, cssValuePool().createValue(inputProperty, CSSPri mitiveValue::CSS_STRING), important);
9101 } else
9102 addProperty(propId, cssValuePool().createIdentifierValue(CSSValueNon e), important);
9103 }
9104
9105 return true;
9106 }
9107
9108 bool CSSParser::parseTransformOrigin(CSSPropertyID propId, CSSPropertyID& propId 1, CSSPropertyID& propId2, CSSPropertyID& propId3, RefPtr<CSSValue>& value, RefP tr<CSSValue>& value2, RefPtr<CSSValue>& value3)
9109 {
9110 propId1 = propId;
9111 propId2 = propId;
9112 propId3 = propId;
9113 if (propId == CSSPropertyWebkitTransformOrigin) {
9114 propId1 = CSSPropertyWebkitTransformOriginX;
9115 propId2 = CSSPropertyWebkitTransformOriginY;
9116 propId3 = CSSPropertyWebkitTransformOriginZ;
9117 }
9118
9119 switch (propId) {
9120 case CSSPropertyWebkitTransformOrigin:
9121 if (!parseTransformOriginShorthand(value, value2, value3))
9122 return false;
9123 // parseTransformOriginShorthand advances the m_valueList pointer
9124 break;
9125 case CSSPropertyWebkitTransformOriginX: {
9126 value = parseFillPositionX(m_valueList.get());
9127 if (value)
9128 m_valueList->next();
9129 break;
9130 }
9131 case CSSPropertyWebkitTransformOriginY: {
9132 value = parseFillPositionY(m_valueList.get());
9133 if (value)
9134 m_valueList->next();
9135 break;
9136 }
9137 case CSSPropertyWebkitTransformOriginZ: {
9138 if (validUnit(m_valueList->current(), FLength))
9139 value = createPrimitiveNumericValue(m_valueList->current());
9140 if (value)
9141 m_valueList->next();
9142 break;
9143 }
9144 default:
9145 ASSERT_NOT_REACHED();
9146 return false;
9147 }
9148
9149 return value;
9150 }
9151
9152 bool CSSParser::parsePerspectiveOrigin(CSSPropertyID propId, CSSPropertyID& prop Id1, CSSPropertyID& propId2, RefPtr<CSSValue>& value, RefPtr<CSSValue>& value2)
9153 {
9154 propId1 = propId;
9155 propId2 = propId;
9156 if (propId == CSSPropertyWebkitPerspectiveOrigin) {
9157 propId1 = CSSPropertyWebkitPerspectiveOriginX;
9158 propId2 = CSSPropertyWebkitPerspectiveOriginY;
9159 }
9160
9161 switch (propId) {
9162 case CSSPropertyWebkitPerspectiveOrigin:
9163 if (m_valueList->size() > 2)
9164 return false;
9165 parse2ValuesFillPosition(m_valueList.get(), value, value2);
9166 break;
9167 case CSSPropertyWebkitPerspectiveOriginX: {
9168 value = parseFillPositionX(m_valueList.get());
9169 if (value)
9170 m_valueList->next();
9171 break;
9172 }
9173 case CSSPropertyWebkitPerspectiveOriginY: {
9174 value = parseFillPositionY(m_valueList.get());
9175 if (value)
9176 m_valueList->next();
9177 break;
9178 }
9179 default:
9180 ASSERT_NOT_REACHED();
9181 return false;
9182 }
9183
9184 return value;
9185 }
9186
9187 bool CSSParser::parseTouchAction(bool important)
9188 {
9189 if (!RuntimeEnabledFeatures::cssTouchActionEnabled())
9190 return false;
9191
9192 CSSParserValue* value = m_valueList->current();
9193 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
9194 if (m_valueList->size() == 1 && value && (value->id == CSSValueAuto || value ->id == CSSValueNone)) {
9195 list->append(cssValuePool().createIdentifierValue(value->id));
9196 addProperty(CSSPropertyTouchAction, list.release(), important);
9197 m_valueList->next();
9198 return true;
9199 }
9200
9201 bool isValid = true;
9202 while (isValid && value) {
9203 switch (value->id) {
9204 case CSSValuePanX:
9205 case CSSValuePanY: {
9206 RefPtr<CSSValue> panValue = cssValuePool().createIdentifierValue(val ue->id);
9207 if (list->hasValue(panValue.get())) {
9208 isValid = false;
9209 break;
9210 }
9211 list->append(panValue.release());
9212 break;
9213 }
9214 default:
9215 isValid = false;
9216 break;
9217 }
9218 if (isValid)
9219 value = m_valueList->next();
9220 }
9221
9222 if (list->length() && isValid) {
9223 addProperty(CSSPropertyTouchAction, list.release(), important);
9224 return true;
9225 }
9226
9227 return false;
9228 }
9229
9230 void CSSParser::addTextDecorationProperty(CSSPropertyID propId, PassRefPtr<CSSVa lue> value, bool important)
9231 {
9232 // The text-decoration-line property takes priority over text-decoration, un less the latter has important priority set.
9233 if (propId == CSSPropertyTextDecoration && !important && !inShorthand()) {
9234 for (unsigned i = 0; i < m_parsedProperties.size(); ++i) {
9235 if (m_parsedProperties[i].id() == CSSPropertyTextDecorationLine)
9236 return;
9237 }
9238 }
9239 addProperty(propId, value, important);
9240 }
9241
9242 bool CSSParser::parseTextDecoration(CSSPropertyID propId, bool important)
9243 {
9244 if (propId == CSSPropertyTextDecorationLine
9245 && !RuntimeEnabledFeatures::css3TextDecorationsEnabled())
9246 return false;
9247
9248 CSSParserValue* value = m_valueList->current();
9249 if (value && value->id == CSSValueNone) {
9250 addTextDecorationProperty(propId, cssValuePool().createIdentifierValue(C SSValueNone), important);
9251 m_valueList->next();
9252 return true;
9253 }
9254
9255 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
9256 bool isValid = true;
9257 while (isValid && value) {
9258 switch (value->id) {
9259 case CSSValueUnderline:
9260 case CSSValueOverline:
9261 case CSSValueLineThrough:
9262 case CSSValueBlink:
9263 list->append(cssValuePool().createIdentifierValue(value->id));
9264 break;
9265 default:
9266 isValid = false;
9267 break;
9268 }
9269 if (isValid)
9270 value = m_valueList->next();
9271 }
9272
9273 // Values are either valid or in shorthand scope.
9274 if (list->length() && (isValid || inShorthand())) {
9275 addTextDecorationProperty(propId, list.release(), important);
9276 return true;
9277 }
9278
9279 return false;
9280 }
9281
9282 bool CSSParser::parseTextUnderlinePosition(bool important)
9283 {
9284 // The text-underline-position property has syntax "auto | [ under || [ left | right ] ]".
9285 // However, values 'left' and 'right' are not implemented yet, so we will pa rse syntax
9286 // "auto | under" for now.
9287 CSSParserValue* value = m_valueList->current();
9288 switch (value->id) {
9289 case CSSValueAuto:
9290 case CSSValueUnder:
9291 if (m_valueList->next())
9292 return false;
9293 addProperty(CSSPropertyTextUnderlinePosition, cssValuePool().createIdent ifierValue(value->id), important);
9294 return true;
9295 default:
9296 return false;
9297 }
9298 }
9299
9300 bool CSSParser::parseTextEmphasisStyle(bool important)
9301 {
9302 unsigned valueListSize = m_valueList->size();
9303
9304 RefPtr<CSSPrimitiveValue> fill;
9305 RefPtr<CSSPrimitiveValue> shape;
9306
9307 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
9308 if (value->unit == CSSPrimitiveValue::CSS_STRING) {
9309 if (fill || shape || (valueListSize != 1 && !inShorthand()))
9310 return false;
9311 addProperty(CSSPropertyWebkitTextEmphasisStyle, createPrimitiveStrin gValue(value), important);
9312 m_valueList->next();
9313 return true;
9314 }
9315
9316 if (value->id == CSSValueNone) {
9317 if (fill || shape || (valueListSize != 1 && !inShorthand()))
9318 return false;
9319 addProperty(CSSPropertyWebkitTextEmphasisStyle, cssValuePool().creat eIdentifierValue(CSSValueNone), important);
9320 m_valueList->next();
9321 return true;
9322 }
9323
9324 if (value->id == CSSValueOpen || value->id == CSSValueFilled) {
9325 if (fill)
9326 return false;
9327 fill = cssValuePool().createIdentifierValue(value->id);
9328 } else if (value->id == CSSValueDot || value->id == CSSValueCircle || va lue->id == CSSValueDoubleCircle || value->id == CSSValueTriangle || value->id == CSSValueSesame) {
9329 if (shape)
9330 return false;
9331 shape = cssValuePool().createIdentifierValue(value->id);
9332 } else if (!inShorthand())
9333 return false;
9334 else
9335 break;
9336 }
9337
9338 if (fill && shape) {
9339 RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated() ;
9340 parsedValues->append(fill.release());
9341 parsedValues->append(shape.release());
9342 addProperty(CSSPropertyWebkitTextEmphasisStyle, parsedValues.release(), important);
9343 return true;
9344 }
9345 if (fill) {
9346 addProperty(CSSPropertyWebkitTextEmphasisStyle, fill.release(), importan t);
9347 return true;
9348 }
9349 if (shape) {
9350 addProperty(CSSPropertyWebkitTextEmphasisStyle, shape.release(), importa nt);
9351 return true;
9352 }
9353
9354 return false;
9355 }
9356
9357 PassRefPtr<CSSValue> CSSParser::parseTextIndent()
9358 {
9359 RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
9360
9361 // <length> | <percentage> | inherit
9362 if (m_valueList->size() == 1) {
9363 CSSParserValue* value = m_valueList->current();
9364 if (!value->id && validUnit(value, FLength | FPercent)) {
9365 list->append(createPrimitiveNumericValue(value));
9366 m_valueList->next();
9367 return list.release();
9368 }
9369 }
9370
9371 if (!RuntimeEnabledFeatures::css3TextEnabled())
9372 return 0;
9373
9374 // The case where text-indent has only <length>(or <percentage>) value
9375 // is handled above if statement even though css3TextEnabled() returns true.
9376
9377 // [ [ <length> | <percentage> ] && each-line ] | inherit
9378 if (m_valueList->size() != 2)
9379 return 0;
9380
9381 CSSParserValue* firstValue = m_valueList->current();
9382 CSSParserValue* secondValue = m_valueList->next();
9383 CSSParserValue* lengthOrPercentageValue = 0;
9384
9385 // [ <length> | <percentage> ] each-line
9386 if (validUnit(firstValue, FLength | FPercent) && secondValue->id == CSSValue EachLine)
9387 lengthOrPercentageValue = firstValue;
9388 // each-line [ <length> | <percentage> ]
9389 else if (firstValue->id == CSSValueEachLine && validUnit(secondValue, FLengt h | FPercent))
9390 lengthOrPercentageValue = secondValue;
9391
9392 if (lengthOrPercentageValue) {
9393 list->append(createPrimitiveNumericValue(lengthOrPercentageValue));
9394 list->append(cssValuePool().createIdentifierValue(CSSValueEachLine));
9395 m_valueList->next();
9396 return list.release();
9397 }
9398
9399 return 0;
9400 }
9401
9402 bool CSSParser::parseLineBoxContain(bool important)
9403 {
9404 LineBoxContain lineBoxContain = LineBoxContainNone;
9405
9406 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
9407 if (value->id == CSSValueBlock) {
9408 if (lineBoxContain & LineBoxContainBlock)
9409 return false;
9410 lineBoxContain |= LineBoxContainBlock;
9411 } else if (value->id == CSSValueInline) {
9412 if (lineBoxContain & LineBoxContainInline)
9413 return false;
9414 lineBoxContain |= LineBoxContainInline;
9415 } else if (value->id == CSSValueFont) {
9416 if (lineBoxContain & LineBoxContainFont)
9417 return false;
9418 lineBoxContain |= LineBoxContainFont;
9419 } else if (value->id == CSSValueGlyphs) {
9420 if (lineBoxContain & LineBoxContainGlyphs)
9421 return false;
9422 lineBoxContain |= LineBoxContainGlyphs;
9423 } else if (value->id == CSSValueReplaced) {
9424 if (lineBoxContain & LineBoxContainReplaced)
9425 return false;
9426 lineBoxContain |= LineBoxContainReplaced;
9427 } else if (value->id == CSSValueInlineBox) {
9428 if (lineBoxContain & LineBoxContainInlineBox)
9429 return false;
9430 lineBoxContain |= LineBoxContainInlineBox;
9431 } else
9432 return false;
9433 }
9434
9435 if (!lineBoxContain)
9436 return false;
9437
9438 addProperty(CSSPropertyWebkitLineBoxContain, CSSLineBoxContainValue::create( lineBoxContain), important);
9439 return true;
9440 }
9441
9442 bool CSSParser::parseFontFeatureTag(CSSValueList* settings)
9443 {
9444 // Feature tag name consists of 4-letter characters.
9445 static const unsigned tagNameLength = 4;
9446
9447 CSSParserValue* value = m_valueList->current();
9448 // Feature tag name comes first
9449 if (value->unit != CSSPrimitiveValue::CSS_STRING)
9450 return false;
9451 if (value->string.length() != tagNameLength)
9452 return false;
9453 for (unsigned i = 0; i < tagNameLength; ++i) {
9454 // Limits the range of characters to 0x20-0x7E, following the tag name r ules defiend in the OpenType specification.
9455 UChar character = value->string[i];
9456 if (character < 0x20 || character > 0x7E)
9457 return false;
9458 }
9459
9460 AtomicString tag = value->string;
9461 int tagValue = 1;
9462 // Feature tag values could follow: <integer> | on | off
9463 value = m_valueList->next();
9464 if (value) {
9465 if (value->unit == CSSPrimitiveValue::CSS_NUMBER && value->isInt && valu e->fValue >= 0) {
9466 tagValue = clampToInteger(value->fValue);
9467 if (tagValue < 0)
9468 return false;
9469 m_valueList->next();
9470 } else if (value->id == CSSValueOn || value->id == CSSValueOff) {
9471 tagValue = value->id == CSSValueOn;
9472 m_valueList->next();
9473 }
9474 }
9475 settings->append(CSSFontFeatureValue::create(tag, tagValue));
9476 return true;
9477 }
9478
9479 bool CSSParser::parseFontFeatureSettings(bool important)
9480 {
9481 if (m_valueList->size() == 1 && m_valueList->current()->id == CSSValueNormal ) {
9482 RefPtr<CSSPrimitiveValue> normalValue = cssValuePool().createIdentifierV alue(CSSValueNormal);
9483 m_valueList->next();
9484 addProperty(CSSPropertyWebkitFontFeatureSettings, normalValue.release(), important);
9485 return true;
9486 }
9487
9488 RefPtr<CSSValueList> settings = CSSValueList::createCommaSeparated();
9489 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
9490 if (!parseFontFeatureTag(settings.get()))
9491 return false;
9492
9493 // If the list isn't parsed fully, the current value should be comma.
9494 value = m_valueList->current();
9495 if (value && !isComma(value))
9496 return false;
9497 }
9498 if (settings->length()) {
9499 addProperty(CSSPropertyWebkitFontFeatureSettings, settings.release(), im portant);
9500 return true;
9501 }
9502 return false;
9503 }
9504
9505 bool CSSParser::parseFontVariantLigatures(bool important)
9506 {
9507 RefPtr<CSSValueList> ligatureValues = CSSValueList::createSpaceSeparated();
9508 bool sawCommonLigaturesValue = false;
9509 bool sawDiscretionaryLigaturesValue = false;
9510 bool sawHistoricalLigaturesValue = false;
9511
9512 for (CSSParserValue* value = m_valueList->current(); value; value = m_valueL ist->next()) {
9513 if (value->unit != CSSPrimitiveValue::CSS_IDENT)
9514 return false;
9515
9516 switch (value->id) {
9517 case CSSValueNoCommonLigatures:
9518 case CSSValueCommonLigatures:
9519 if (sawCommonLigaturesValue)
9520 return false;
9521 sawCommonLigaturesValue = true;
9522 ligatureValues->append(cssValuePool().createIdentifierValue(value->i d));
9523 break;
9524 case CSSValueNoDiscretionaryLigatures:
9525 case CSSValueDiscretionaryLigatures:
9526 if (sawDiscretionaryLigaturesValue)
9527 return false;
9528 sawDiscretionaryLigaturesValue = true;
9529 ligatureValues->append(cssValuePool().createIdentifierValue(value->i d));
9530 break;
9531 case CSSValueNoHistoricalLigatures:
9532 case CSSValueHistoricalLigatures:
9533 if (sawHistoricalLigaturesValue)
9534 return false;
9535 sawHistoricalLigaturesValue = true;
9536 ligatureValues->append(cssValuePool().createIdentifierValue(value->i d));
9537 break;
9538 default:
9539 return false;
9540 }
9541 }
9542
9543 if (!ligatureValues->length())
9544 return false;
9545
9546 addProperty(CSSPropertyWebkitFontVariantLigatures, ligatureValues.release(), important);
9547 return true;
9548 }
9549
9550 bool CSSParser::parseCalculation(CSSParserValue* value, ValueRange range)
9551 {
9552 ASSERT(isCalculation(value));
9553
9554 CSSParserValueList* args = value->function->args.get();
9555 if (!args || !args->size())
9556 return false;
9557
9558 ASSERT(!m_parsedCalculation);
9559 m_parsedCalculation = CSSCalcValue::create(value->function->name, args, rang e);
9560
9561 if (!m_parsedCalculation)
9562 return false;
9563
9564 return true;
9565 }
9566
9567 #define END_TOKEN 0
9568
9569 void CSSParser::ensureLineEndings()
9570 {
9571 if (!m_lineEndings)
9572 m_lineEndings = lineEndings(*m_source);
9573 }
9574
9575 CSSParserSelector* CSSParser::createFloatingSelectorWithTagName(const QualifiedN ame& tagQName)
9576 {
9577 CSSParserSelector* selector = new CSSParserSelector(tagQName);
9578 m_floatingSelectors.append(selector);
9579 return selector;
9580 }
9581
9582 CSSParserSelector* CSSParser::createFloatingSelector()
9583 {
9584 CSSParserSelector* selector = new CSSParserSelector;
9585 m_floatingSelectors.append(selector);
9586 return selector;
9587 }
9588
9589 PassOwnPtr<CSSParserSelector> CSSParser::sinkFloatingSelector(CSSParserSelector* selector)
9590 {
9591 if (selector) {
9592 size_t index = m_floatingSelectors.reverseFind(selector);
9593 ASSERT(index != kNotFound);
9594 m_floatingSelectors.remove(index);
9595 }
9596 return adoptPtr(selector);
9597 }
9598
9599 Vector<OwnPtr<CSSParserSelector> >* CSSParser::createFloatingSelectorVector()
9600 {
9601 Vector<OwnPtr<CSSParserSelector> >* selectorVector = new Vector<OwnPtr<CSSPa rserSelector> >;
9602 m_floatingSelectorVectors.append(selectorVector);
9603 return selectorVector;
9604 }
9605
9606 PassOwnPtr<Vector<OwnPtr<CSSParserSelector> > > CSSParser::sinkFloatingSelectorV ector(Vector<OwnPtr<CSSParserSelector> >* selectorVector)
9607 {
9608 if (selectorVector) {
9609 size_t index = m_floatingSelectorVectors.reverseFind(selectorVector);
9610 ASSERT(index != kNotFound);
9611 m_floatingSelectorVectors.remove(index);
9612 }
9613 return adoptPtr(selectorVector);
9614 }
9615
9616 CSSParserValueList* CSSParser::createFloatingValueList()
9617 {
9618 CSSParserValueList* list = new CSSParserValueList;
9619 m_floatingValueLists.append(list);
9620 return list;
9621 }
9622
9623 PassOwnPtr<CSSParserValueList> CSSParser::sinkFloatingValueList(CSSParserValueLi st* list)
9624 {
9625 if (list) {
9626 size_t index = m_floatingValueLists.reverseFind(list);
9627 ASSERT(index != kNotFound);
9628 m_floatingValueLists.remove(index);
9629 }
9630 return adoptPtr(list);
9631 }
9632
9633 CSSParserFunction* CSSParser::createFloatingFunction()
9634 {
9635 CSSParserFunction* function = new CSSParserFunction;
9636 m_floatingFunctions.append(function);
9637 return function;
9638 }
9639
9640 CSSParserFunction* CSSParser::createFloatingFunction(const CSSParserString& name , PassOwnPtr<CSSParserValueList> args)
9641 {
9642 CSSParserFunction* function = createFloatingFunction();
9643 function->name = name;
9644 function->args = args;
9645 return function;
9646 }
9647
9648 PassOwnPtr<CSSParserFunction> CSSParser::sinkFloatingFunction(CSSParserFunction* function)
9649 {
9650 if (function) {
9651 size_t index = m_floatingFunctions.reverseFind(function);
9652 ASSERT(index != kNotFound);
9653 m_floatingFunctions.remove(index);
9654 }
9655 return adoptPtr(function);
9656 }
9657
9658 CSSParserValue& CSSParser::sinkFloatingValue(CSSParserValue& value)
9659 {
9660 if (value.unit == CSSParserValue::Function) {
9661 size_t index = m_floatingFunctions.reverseFind(value.function);
9662 ASSERT(index != kNotFound);
9663 m_floatingFunctions.remove(index);
9664 }
9665 return value;
9666 }
9667
9668 MediaQueryExp* CSSParser::createFloatingMediaQueryExp(const AtomicString& mediaF eature, CSSParserValueList* values)
9669 {
9670 m_floatingMediaQueryExp = MediaQueryExp::create(mediaFeature, values);
9671 return m_floatingMediaQueryExp.get();
9672 }
9673
9674 PassOwnPtr<MediaQueryExp> CSSParser::sinkFloatingMediaQueryExp(MediaQueryExp* ex pression)
9675 {
9676 ASSERT_UNUSED(expression, expression == m_floatingMediaQueryExp);
9677 return m_floatingMediaQueryExp.release();
9678 }
9679
9680 Vector<OwnPtr<MediaQueryExp> >* CSSParser::createFloatingMediaQueryExpList()
9681 {
9682 m_floatingMediaQueryExpList = adoptPtr(new Vector<OwnPtr<MediaQueryExp> >);
9683 return m_floatingMediaQueryExpList.get();
9684 }
9685
9686 PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > CSSParser::sinkFloatingMediaQueryExp List(Vector<OwnPtr<MediaQueryExp> >* list)
9687 {
9688 ASSERT_UNUSED(list, list == m_floatingMediaQueryExpList);
9689 return m_floatingMediaQueryExpList.release();
9690 }
9691
9692 MediaQuery* CSSParser::createFloatingMediaQuery(MediaQuery::Restrictor restricto r, const AtomicString& mediaType, PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > ex pressions)
9693 {
9694 m_floatingMediaQuery = adoptPtr(new MediaQuery(restrictor, mediaType, expres sions));
9695 return m_floatingMediaQuery.get();
9696 }
9697
9698 MediaQuery* CSSParser::createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQu eryExp> > > expressions)
9699 {
9700 return createFloatingMediaQuery(MediaQuery::None, AtomicString("all", Atomic String::ConstructFromLiteral), expressions);
9701 }
9702
9703 MediaQuery* CSSParser::createFloatingNotAllQuery()
9704 {
9705 return createFloatingMediaQuery(MediaQuery::Not, AtomicString("all", AtomicS tring::ConstructFromLiteral), sinkFloatingMediaQueryExpList(createFloatingMediaQ ueryExpList()));
9706 }
9707
9708 PassOwnPtr<MediaQuery> CSSParser::sinkFloatingMediaQuery(MediaQuery* query)
9709 {
9710 ASSERT_UNUSED(query, query == m_floatingMediaQuery);
9711 return m_floatingMediaQuery.release();
9712 }
9713
9714 Vector<RefPtr<StyleKeyframe> >* CSSParser::createFloatingKeyframeVector()
9715 {
9716 m_floatingKeyframeVector = adoptPtr(new Vector<RefPtr<StyleKeyframe> >());
9717 return m_floatingKeyframeVector.get();
9718 }
9719
9720 PassOwnPtr<Vector<RefPtr<StyleKeyframe> > > CSSParser::sinkFloatingKeyframeVecto r(Vector<RefPtr<StyleKeyframe> >* keyframeVector)
9721 {
9722 ASSERT_UNUSED(keyframeVector, m_floatingKeyframeVector == keyframeVector);
9723 return m_floatingKeyframeVector.release();
9724 }
9725
9726 MediaQuerySet* CSSParser::createMediaQuerySet()
9727 {
9728 RefPtr<MediaQuerySet> queries = MediaQuerySet::create();
9729 MediaQuerySet* result = queries.get();
9730 m_parsedMediaQuerySets.append(queries.release());
9731 return result;
9732 }
9733
9734 StyleRuleBase* CSSParser::createImportRule(const CSSParserString& url, MediaQuer ySet* media)
9735 {
9736 if (!media || !m_allowImportRules)
9737 return 0;
9738 RefPtr<StyleRuleImport> rule = StyleRuleImport::create(url, media);
9739 StyleRuleImport* result = rule.get();
9740 m_parsedRules.append(rule.release());
9741 return result;
9742 }
9743
9744 StyleRuleBase* CSSParser::createMediaRule(MediaQuerySet* media, RuleList* rules)
9745 {
9746 m_allowImportRules = m_allowNamespaceDeclarations = false;
9747 RefPtr<StyleRuleMedia> rule;
9748 if (rules) {
9749 rule = StyleRuleMedia::create(media ? media : MediaQuerySet::create(), * rules);
9750 } else {
9751 RuleList emptyRules;
9752 rule = StyleRuleMedia::create(media ? media : MediaQuerySet::create(), e mptyRules);
9753 }
9754 StyleRuleMedia* result = rule.get();
9755 m_parsedRules.append(rule.release());
9756 return result;
9757 }
9758
9759 StyleRuleBase* CSSParser::createSupportsRule(bool conditionIsSupported, RuleList * rules)
9760 {
9761 m_allowImportRules = m_allowNamespaceDeclarations = false;
9762
9763 RefPtr<CSSRuleSourceData> data = popSupportsRuleData();
9764 RefPtr<StyleRuleSupports> rule;
9765 String conditionText;
9766 unsigned conditionOffset = data->ruleHeaderRange.start + 9;
9767 unsigned conditionLength = data->ruleHeaderRange.length() - 9;
9768
9769 if (m_tokenizer.is8BitSource())
9770 conditionText = String(m_tokenizer.m_dataStart8.get() + conditionOffset, conditionLength).stripWhiteSpace();
9771 else
9772 conditionText = String(m_tokenizer.m_dataStart16.get() + conditionOffset , conditionLength).stripWhiteSpace();
9773
9774 if (rules) {
9775 rule = StyleRuleSupports::create(conditionText, conditionIsSupported, *r ules);
9776 } else {
9777 RuleList emptyRules;
9778 rule = StyleRuleSupports::create(conditionText, conditionIsSupported, em ptyRules);
9779 }
9780
9781 StyleRuleSupports* result = rule.get();
9782 m_parsedRules.append(rule.release());
9783
9784 return result;
9785 }
9786
9787 void CSSParser::markSupportsRuleHeaderStart()
9788 {
9789 if (!m_supportsRuleDataStack)
9790 m_supportsRuleDataStack = adoptPtr(new RuleSourceDataList());
9791
9792 RefPtr<CSSRuleSourceData> data = CSSRuleSourceData::create(CSSRuleSourceData ::SUPPORTS_RULE);
9793 data->ruleHeaderRange.start = m_tokenizer.tokenStartOffset();
9794 m_supportsRuleDataStack->append(data);
9795 }
9796
9797 void CSSParser::markSupportsRuleHeaderEnd()
9798 {
9799 ASSERT(m_supportsRuleDataStack && !m_supportsRuleDataStack->isEmpty());
9800
9801 if (m_tokenizer.is8BitSource())
9802 m_supportsRuleDataStack->last()->ruleHeaderRange.end = m_tokenizer.token Start<LChar>() - m_tokenizer.m_dataStart8.get();
9803 else
9804 m_supportsRuleDataStack->last()->ruleHeaderRange.end = m_tokenizer.token Start<UChar>() - m_tokenizer.m_dataStart16.get();
9805 }
9806
9807 PassRefPtr<CSSRuleSourceData> CSSParser::popSupportsRuleData()
9808 {
9809 ASSERT(m_supportsRuleDataStack && !m_supportsRuleDataStack->isEmpty());
9810 RefPtr<CSSRuleSourceData> data = m_supportsRuleDataStack->last();
9811 m_supportsRuleDataStack->removeLast();
9812 return data.release();
9813 }
9814
9815 CSSParser::RuleList* CSSParser::createRuleList()
9816 {
9817 OwnPtr<RuleList> list = adoptPtr(new RuleList);
9818 RuleList* listPtr = list.get();
9819
9820 m_parsedRuleLists.append(list.release());
9821 return listPtr;
9822 }
9823
9824 CSSParser::RuleList* CSSParser::appendRule(RuleList* ruleList, StyleRuleBase* ru le)
9825 {
9826 if (rule) {
9827 if (!ruleList)
9828 ruleList = createRuleList();
9829 ruleList->append(rule);
9830 }
9831 return ruleList;
9832 }
9833
9834 template <typename CharacterType>
9835 ALWAYS_INLINE static void makeLower(const CharacterType* input, CharacterType* o utput, unsigned length)
9836 {
9837 // FIXME: If we need Unicode lowercasing here, then we probably want the rea l kind
9838 // that can potentially change the length of the string rather than the char acter
9839 // by character kind. If we don't need Unicode lowercasing, it would be good to
9840 // simplify this function.
9841
9842 if (charactersAreAllASCII(input, length)) {
9843 // Fast case for all-ASCII.
9844 for (unsigned i = 0; i < length; i++)
9845 output[i] = toASCIILower(input[i]);
9846 } else {
9847 for (unsigned i = 0; i < length; i++)
9848 output[i] = Unicode::toLower(input[i]);
9849 }
9850 }
9851
9852 void CSSParser::tokenToLowerCase(const CSSParserString& token)
9853 {
9854 size_t length = token.length();
9855 if (m_tokenizer.is8BitSource()) {
9856 size_t offset = token.characters8() - m_tokenizer.m_dataStart8.get();
9857 makeLower(token.characters8(), m_tokenizer.m_dataStart8.get() + offset, length);
9858 } else {
9859 size_t offset = token.characters16() - m_tokenizer.m_dataStart16.get();
9860 makeLower(token.characters16(), m_tokenizer.m_dataStart16.get() + offset , length);
9861 }
9862 }
9863
9864 void CSSParser::endInvalidRuleHeader()
9865 {
9866 if (m_ruleHeaderType == CSSRuleSourceData::UNKNOWN_RULE)
9867 return;
9868
9869 CSSParserLocation location;
9870 location.lineNumber = m_tokenizer.m_lineNumber;
9871 location.offset = m_ruleHeaderStartOffset;
9872 if (m_tokenizer.is8BitSource())
9873 location.token.init(m_tokenizer.m_dataStart8.get() + m_ruleHeaderStartOf fset, 0);
9874 else
9875 location.token.init(m_tokenizer.m_dataStart16.get() + m_ruleHeaderStartO ffset, 0);
9876
9877 reportError(location, m_ruleHeaderType == CSSRuleSourceData::STYLE_RULE ? In validSelectorCSSError : InvalidRuleCSSError);
9878
9879 endRuleHeader();
9880 }
9881
9882 void CSSParser::reportError(const CSSParserLocation&, CSSParserError)
9883 {
9884 // FIXME: error reporting temporatily disabled.
9885 }
9886
9887 bool CSSParser::isLoggingErrors()
9888 {
9889 return m_logErrors && !m_ignoreErrors;
9890 }
9891
9892 void CSSParser::logError(const String& message, const CSSParserLocation& locatio n)
9893 {
9894 unsigned lineNumberInStyleSheet;
9895 unsigned columnNumber = 0;
9896 if (InspectorInstrumentation::hasFrontends()) {
9897 ensureLineEndings();
9898 TextPosition tokenPosition = TextPosition::fromOffsetAndLineEndings(loca tion.offset, *m_lineEndings);
9899 lineNumberInStyleSheet = tokenPosition.m_line.zeroBasedInt();
9900 columnNumber = (lineNumberInStyleSheet ? 0 : m_startPosition.m_column.ze roBasedInt()) + tokenPosition.m_column.zeroBasedInt();
9901 } else {
9902 lineNumberInStyleSheet = location.lineNumber;
9903 }
9904 PageConsole& console = m_styleSheet->singleOwnerDocument()->frameHost()->con sole();
9905 console.addMessage(CSSMessageSource, WarningMessageLevel, message, m_styleSh eet->baseURL().string(), lineNumberInStyleSheet + m_startPosition.m_line.zeroBas edInt() + 1, columnNumber + 1);
9906 }
9907
9908 StyleRuleKeyframes* CSSParser::createKeyframesRule(const String& name, PassOwnPt r<Vector<RefPtr<StyleKeyframe> > > popKeyframes, bool isPrefixed)
9909 {
9910 OwnPtr<Vector<RefPtr<StyleKeyframe> > > keyframes = popKeyframes;
9911 m_allowImportRules = m_allowNamespaceDeclarations = false;
9912 RefPtr<StyleRuleKeyframes> rule = StyleRuleKeyframes::create();
9913 for (size_t i = 0; i < keyframes->size(); ++i)
9914 rule->parserAppendKeyframe(keyframes->at(i));
9915 rule->setName(name);
9916 rule->setVendorPrefixed(isPrefixed);
9917 StyleRuleKeyframes* rulePtr = rule.get();
9918 m_parsedRules.append(rule.release());
9919 return rulePtr;
9920 }
9921
9922 StyleRuleBase* CSSParser::createStyleRule(Vector<OwnPtr<CSSParserSelector> >* se lectors)
9923 {
9924 StyleRule* result = 0;
9925 if (selectors) {
9926 m_allowImportRules = m_allowNamespaceDeclarations = false;
9927 RefPtr<StyleRule> rule = StyleRule::create();
9928 rule->parserAdoptSelectorVector(*selectors);
9929 if (m_hasFontFaceOnlyValues)
9930 deleteFontFaceOnlyValues();
9931 rule->setProperties(createStylePropertySet());
9932 result = rule.get();
9933 m_parsedRules.append(rule.release());
9934 }
9935 clearProperties();
9936 return result;
9937 }
9938
9939 StyleRuleBase* CSSParser::createFontFaceRule()
9940 {
9941 m_allowImportRules = m_allowNamespaceDeclarations = false;
9942 for (unsigned i = 0; i < m_parsedProperties.size(); ++i) {
9943 CSSProperty& property = m_parsedProperties[i];
9944 if (property.id() == CSSPropertyFontVariant && property.value()->isPrimi tiveValue())
9945 property.wrapValueInCommaSeparatedList();
9946 else if (property.id() == CSSPropertyFontFamily && (!property.value()->i sValueList() || toCSSValueList(property.value())->length() != 1)) {
9947 // Unlike font-family property, font-family descriptor in @font-face rule
9948 // has to be a value list with exactly one family name. It cannot ha ve a
9949 // have 'initial' value and cannot 'inherit' from parent.
9950 // See http://dev.w3.org/csswg/css3-fonts/#font-family-desc
9951 clearProperties();
9952 return 0;
9953 }
9954 }
9955 RefPtr<StyleRuleFontFace> rule = StyleRuleFontFace::create();
9956 rule->setProperties(createStylePropertySet());
9957 clearProperties();
9958 StyleRuleFontFace* result = rule.get();
9959 m_parsedRules.append(rule.release());
9960 if (m_styleSheet)
9961 m_styleSheet->setHasFontFaceRule(true);
9962 return result;
9963 }
9964
9965 void CSSParser::addNamespace(const AtomicString& prefix, const AtomicString& uri )
9966 {
9967 if (!m_styleSheet || !m_allowNamespaceDeclarations)
9968 return;
9969 m_allowImportRules = false;
9970 m_styleSheet->parserAddNamespace(prefix, uri);
9971 if (prefix.isEmpty() && !uri.isNull())
9972 m_defaultNamespace = uri;
9973 }
9974
9975 QualifiedName CSSParser::determineNameInNamespace(const AtomicString& prefix, co nst AtomicString& localName)
9976 {
9977 if (!m_styleSheet)
9978 return QualifiedName(prefix, localName, m_defaultNamespace);
9979 return QualifiedName(prefix, localName, m_styleSheet->determineNamespace(pre fix));
9980 }
9981
9982 CSSParserSelector* CSSParser::rewriteSpecifiersWithNamespaceIfNeeded(CSSParserSe lector* specifiers)
9983 {
9984 if (m_defaultNamespace != starAtom || specifiers->needsCrossingTreeScopeBoun dary())
9985 return rewriteSpecifiersWithElementName(nullAtom, starAtom, specifiers, /*tagIsForNamespaceRule*/true);
9986 if (CSSParserSelector* distributedPseudoElementSelector = specifiers->findDi stributedPseudoElementSelector()) {
9987 specifiers->prependTagSelector(QualifiedName(nullAtom, starAtom, m_defau ltNamespace), /*tagIsForNamespaceRule*/true);
9988 return rewriteSpecifiersForShadowDistributed(specifiers, distributedPseu doElementSelector);
9989 }
9990 return specifiers;
9991 }
9992
9993 CSSParserSelector* CSSParser::rewriteSpecifiersWithElementName(const AtomicStrin g& namespacePrefix, const AtomicString& elementName, CSSParserSelector* specifie rs, bool tagIsForNamespaceRule)
9994 {
9995 AtomicString determinedNamespace = namespacePrefix != nullAtom && m_styleShe et ? m_styleSheet->determineNamespace(namespacePrefix) : m_defaultNamespace;
9996 QualifiedName tag(namespacePrefix, elementName, determinedNamespace);
9997
9998 if (CSSParserSelector* distributedPseudoElementSelector = specifiers->findDi stributedPseudoElementSelector()) {
9999 specifiers->prependTagSelector(tag, tagIsForNamespaceRule);
10000 return rewriteSpecifiersForShadowDistributed(specifiers, distributedPseu doElementSelector);
10001 }
10002
10003 if (specifiers->needsCrossingTreeScopeBoundary())
10004 return rewriteSpecifiersWithElementNameForCustomPseudoElement(tag, eleme ntName, specifiers, tagIsForNamespaceRule);
10005
10006 if (specifiers->isContentPseudoElement())
10007 return rewriteSpecifiersWithElementNameForContentPseudoElement(tag, elem entName, specifiers, tagIsForNamespaceRule);
10008
10009 if (tag == anyQName())
10010 return specifiers;
10011 if (!(specifiers->pseudoType() == CSSSelector::PseudoCue))
10012 specifiers->prependTagSelector(tag, tagIsForNamespaceRule);
10013 return specifiers;
10014 }
10015
10016 CSSParserSelector* CSSParser::rewriteSpecifiersWithElementNameForCustomPseudoEle ment(const QualifiedName& tag, const AtomicString& elementName, CSSParserSelecto r* specifiers, bool tagIsForNamespaceRule)
10017 {
10018 if (m_useCounter && specifiers->pseudoType() == CSSSelector::PseudoUserAgent CustomElement)
10019 m_useCounter->count(UseCounter::CSSPseudoElementUserAgentCustomPseudo);
10020
10021 CSSParserSelector* lastShadowPseudo = specifiers;
10022 CSSParserSelector* history = specifiers;
10023 while (history->tagHistory()) {
10024 history = history->tagHistory();
10025 if (history->needsCrossingTreeScopeBoundary() || history->hasShadowPseud o())
10026 lastShadowPseudo = history;
10027 }
10028
10029 if (lastShadowPseudo->tagHistory()) {
10030 if (tag != anyQName())
10031 lastShadowPseudo->tagHistory()->prependTagSelector(tag, tagIsForName spaceRule);
10032 return specifiers;
10033 }
10034
10035 // For shadow-ID pseudo-elements to be correctly matched, the ShadowPseudo c ombinator has to be used.
10036 // We therefore create a new Selector with that combinator here in any case, even if matching any (host) element in any namespace (i.e. '*').
10037 OwnPtr<CSSParserSelector> elementNameSelector = adoptPtr(new CSSParserSelect or(tag));
10038 lastShadowPseudo->setTagHistory(elementNameSelector.release());
10039 lastShadowPseudo->setRelation(CSSSelector::ShadowPseudo);
10040 return specifiers;
10041 }
10042
10043 CSSParserSelector* CSSParser::rewriteSpecifiersWithElementNameForContentPseudoEl ement(const QualifiedName& tag, const AtomicString& elementName, CSSParserSelect or* specifiers, bool tagIsForNamespaceRule)
10044 {
10045 CSSParserSelector* last = specifiers;
10046 CSSParserSelector* history = specifiers;
10047 while (history->tagHistory()) {
10048 history = history->tagHistory();
10049 if (history->isContentPseudoElement() || history->relationIsAffectedByPs eudoContent())
10050 last = history;
10051 }
10052
10053 if (last->tagHistory()) {
10054 if (tag != anyQName())
10055 last->tagHistory()->prependTagSelector(tag, tagIsForNamespaceRule);
10056 return specifiers;
10057 }
10058
10059 // For shadow-ID pseudo-elements to be correctly matched, the ShadowPseudo c ombinator has to be used.
10060 // We therefore create a new Selector with that combinator here in any case, even if matching any (host) element in any namespace (i.e. '*').
10061 OwnPtr<CSSParserSelector> elementNameSelector = adoptPtr(new CSSParserSelect or(tag));
10062 last->setTagHistory(elementNameSelector.release());
10063 last->setRelation(CSSSelector::SubSelector);
10064 return specifiers;
10065 }
10066
10067 CSSParserSelector* CSSParser::rewriteSpecifiersForShadowDistributed(CSSParserSel ector* specifiers, CSSParserSelector* distributedPseudoElementSelector)
10068 {
10069 if (m_useCounter)
10070 m_useCounter->count(UseCounter::CSSPseudoElementPrefixedDistributed);
10071 CSSParserSelector* argumentSelector = distributedPseudoElementSelector->func tionArgumentSelector();
10072 ASSERT(argumentSelector);
10073 ASSERT(!specifiers->isDistributedPseudoElement());
10074 for (CSSParserSelector* end = specifiers; end->tagHistory(); end = end->tagH istory()) {
10075 if (end->tagHistory()->isDistributedPseudoElement()) {
10076 end->clearTagHistory();
10077 break;
10078 }
10079 }
10080 CSSParserSelector* end = argumentSelector;
10081 while (end->tagHistory())
10082 end = end->tagHistory();
10083
10084 switch (end->relation()) {
10085 case CSSSelector::Child:
10086 case CSSSelector::Descendant:
10087 end->setTagHistory(sinkFloatingSelector(specifiers));
10088 end->setRelationIsAffectedByPseudoContent();
10089 return argumentSelector;
10090 default:
10091 return 0;
10092 }
10093 }
10094
10095 CSSParserSelector* CSSParser::rewriteSpecifiers(CSSParserSelector* specifiers, C SSParserSelector* newSpecifier)
10096 {
10097 if (newSpecifier->needsCrossingTreeScopeBoundary()) {
10098 // Unknown pseudo element always goes at the top of selector chain.
10099 newSpecifier->appendTagHistory(CSSSelector::ShadowPseudo, sinkFloatingSe lector(specifiers));
10100 return newSpecifier;
10101 }
10102 if (newSpecifier->isContentPseudoElement()) {
10103 newSpecifier->appendTagHistory(CSSSelector::SubSelector, sinkFloatingSel ector(specifiers));
10104 return newSpecifier;
10105 }
10106 if (specifiers->needsCrossingTreeScopeBoundary()) {
10107 // Specifiers for unknown pseudo element go right behind it in the chain .
10108 specifiers->insertTagHistory(CSSSelector::SubSelector, sinkFloatingSelec tor(newSpecifier), CSSSelector::ShadowPseudo);
10109 return specifiers;
10110 }
10111 if (specifiers->isContentPseudoElement()) {
10112 specifiers->insertTagHistory(CSSSelector::SubSelector, sinkFloatingSelec tor(newSpecifier), CSSSelector::SubSelector);
10113 return specifiers;
10114 }
10115 specifiers->appendTagHistory(CSSSelector::SubSelector, sinkFloatingSelector( newSpecifier));
10116 return specifiers;
10117 }
10118
10119 StyleRuleBase* CSSParser::createPageRule(PassOwnPtr<CSSParserSelector> pageSelec tor)
10120 {
10121 // FIXME: Margin at-rules are ignored.
10122 m_allowImportRules = m_allowNamespaceDeclarations = false;
10123 StyleRulePage* pageRule = 0;
10124 if (pageSelector) {
10125 RefPtr<StyleRulePage> rule = StyleRulePage::create();
10126 Vector<OwnPtr<CSSParserSelector> > selectorVector;
10127 selectorVector.append(pageSelector);
10128 rule->parserAdoptSelectorVector(selectorVector);
10129 rule->setProperties(createStylePropertySet());
10130 pageRule = rule.get();
10131 m_parsedRules.append(rule.release());
10132 }
10133 clearProperties();
10134 return pageRule;
10135 }
10136
10137 void CSSParser::setReusableRegionSelectorVector(Vector<OwnPtr<CSSParserSelector> >* selectors)
10138 {
10139 if (selectors)
10140 m_reusableRegionSelectorVector.swap(*selectors);
10141 }
10142
10143 StyleRuleBase* CSSParser::createRegionRule(Vector<OwnPtr<CSSParserSelector> >* r egionSelector, RuleList* rules)
10144 {
10145 if (m_useCounter)
10146 m_useCounter->count(UseCounter::CSSWebkitRegionAtRule);
10147
10148 if (!RuntimeEnabledFeatures::cssRegionsEnabled() || !regionSelector || !rule s)
10149 return 0;
10150
10151 m_allowImportRules = m_allowNamespaceDeclarations = false;
10152
10153 RefPtr<StyleRuleRegion> regionRule = StyleRuleRegion::create(regionSelector, *rules);
10154
10155 StyleRuleRegion* result = regionRule.get();
10156 m_parsedRules.append(regionRule.release());
10157 if (m_observer)
10158 m_observer->startEndUnknownRule();
10159
10160 return result;
10161 }
10162
10163 StyleRuleBase* CSSParser::createMarginAtRule(CSSSelector::MarginBoxType /* margi nBox */)
10164 {
10165 // FIXME: Implement margin at-rule here, using:
10166 // - marginBox: margin box
10167 // - m_parsedProperties: properties at [m_numParsedPropertiesBeforeMa rginBox, m_parsedProperties.size()] are for this at-rule.
10168 // Don't forget to also update the action for page symbol in CSSGrammar.y su ch that margin at-rule data is cleared if page_selector is invalid.
10169
10170 endDeclarationsForMarginBox();
10171 return 0; // until this method is implemented.
10172 }
10173
10174 void CSSParser::startDeclarationsForMarginBox()
10175 {
10176 m_numParsedPropertiesBeforeMarginBox = m_parsedProperties.size();
10177 }
10178
10179 void CSSParser::endDeclarationsForMarginBox()
10180 {
10181 rollbackLastProperties(m_parsedProperties.size() - m_numParsedPropertiesBefo reMarginBox);
10182 m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
10183 }
10184
10185 void CSSParser::deleteFontFaceOnlyValues()
10186 {
10187 ASSERT(m_hasFontFaceOnlyValues);
10188 for (unsigned i = 0; i < m_parsedProperties.size();) {
10189 CSSProperty& property = m_parsedProperties[i];
10190 if (property.id() == CSSPropertyFontVariant && property.value()->isValue List()) {
10191 m_parsedProperties.remove(i);
10192 continue;
10193 }
10194 ++i;
10195 }
10196 }
10197
10198 StyleKeyframe* CSSParser::createKeyframe(CSSParserValueList* keys)
10199 {
10200 OwnPtr<Vector<double> > keyVector = StyleKeyframe::createKeyList(keys);
10201 if (keyVector->isEmpty())
10202 return 0;
10203
10204 RefPtr<StyleKeyframe> keyframe = StyleKeyframe::create();
10205 keyframe->setKeys(keyVector.release());
10206 keyframe->setProperties(createStylePropertySet());
10207
10208 clearProperties();
10209
10210 StyleKeyframe* keyframePtr = keyframe.get();
10211 m_parsedKeyframes.append(keyframe.release());
10212 return keyframePtr;
10213 }
10214
10215 void CSSParser::invalidBlockHit()
10216 {
10217 if (m_styleSheet && !m_hadSyntacticallyValidCSSRule)
10218 m_styleSheet->setHasSyntacticallyValidCSSHeader(false);
10219 }
10220
10221 void CSSParser::startRule()
10222 {
10223 if (!m_observer)
10224 return;
10225
10226 ASSERT(m_ruleHasHeader);
10227 m_ruleHasHeader = false;
10228 }
10229
10230 void CSSParser::endRule(bool valid)
10231 {
10232 if (!m_observer)
10233 return;
10234
10235 if (m_ruleHasHeader)
10236 m_observer->endRuleBody(m_tokenizer.safeUserStringTokenOffset(), !valid) ;
10237 m_ruleHasHeader = true;
10238 }
10239
10240 void CSSParser::startRuleHeader(CSSRuleSourceData::Type ruleType)
10241 {
10242 resumeErrorLogging();
10243 m_ruleHeaderType = ruleType;
10244 m_ruleHeaderStartOffset = m_tokenizer.safeUserStringTokenOffset();
10245 m_ruleHeaderStartLineNumber = m_tokenizer.m_tokenStartLineNumber;
10246 if (m_observer) {
10247 ASSERT(!m_ruleHasHeader);
10248 m_observer->startRuleHeader(ruleType, m_ruleHeaderStartOffset);
10249 m_ruleHasHeader = true;
10250 }
10251 }
10252
10253 void CSSParser::endRuleHeader()
10254 {
10255 ASSERT(m_ruleHeaderType != CSSRuleSourceData::UNKNOWN_RULE);
10256 m_ruleHeaderType = CSSRuleSourceData::UNKNOWN_RULE;
10257 if (m_observer) {
10258 ASSERT(m_ruleHasHeader);
10259 m_observer->endRuleHeader(m_tokenizer.safeUserStringTokenOffset());
10260 }
10261 }
10262
10263 void CSSParser::startSelector()
10264 {
10265 if (m_observer)
10266 m_observer->startSelector(m_tokenizer.safeUserStringTokenOffset());
10267 }
10268
10269 void CSSParser::endSelector()
10270 {
10271 if (m_observer)
10272 m_observer->endSelector(m_tokenizer.safeUserStringTokenOffset());
10273 }
10274
10275 void CSSParser::startRuleBody()
10276 {
10277 if (m_observer)
10278 m_observer->startRuleBody(m_tokenizer.safeUserStringTokenOffset());
10279 }
10280
10281 void CSSParser::startProperty()
10282 {
10283 resumeErrorLogging();
10284 if (m_observer)
10285 m_observer->startProperty(m_tokenizer.safeUserStringTokenOffset());
10286 }
10287
10288 void CSSParser::endProperty(bool isImportantFound, bool isPropertyParsed, CSSPar serError errorType)
10289 {
10290 m_id = CSSPropertyInvalid;
10291 if (m_observer)
10292 m_observer->endProperty(isImportantFound, isPropertyParsed, m_tokenizer. safeUserStringTokenOffset(), errorType);
10293 }
10294
10295 void CSSParser::startEndUnknownRule()
10296 {
10297 if (m_observer)
10298 m_observer->startEndUnknownRule();
10299 }
10300
10301 StyleRuleBase* CSSParser::createViewportRule()
10302 {
10303 // Allow @viewport rules from UA stylesheets even if the feature is disabled .
10304 if (!RuntimeEnabledFeatures::cssViewportEnabled() && !isUASheetBehavior(m_co ntext.mode()))
10305 return 0;
10306
10307 m_allowImportRules = m_allowNamespaceDeclarations = false;
10308
10309 RefPtr<StyleRuleViewport> rule = StyleRuleViewport::create();
10310
10311 rule->setProperties(createStylePropertySet());
10312 clearProperties();
10313
10314 StyleRuleViewport* result = rule.get();
10315 m_parsedRules.append(rule.release());
10316
10317 return result;
10318 }
10319
10320 bool CSSParser::parseViewportProperty(CSSPropertyID propId, bool important)
10321 {
10322 ASSERT(RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(m_c ontext.mode()));
10323
10324 CSSParserValue* value = m_valueList->current();
10325 if (!value)
10326 return false;
10327
10328 CSSValueID id = value->id;
10329 bool validPrimitive = false;
10330
10331 switch (propId) {
10332 case CSSPropertyMinWidth: // auto | extend-to-zoom | <length> | <percentage>
10333 case CSSPropertyMaxWidth:
10334 case CSSPropertyMinHeight:
10335 case CSSPropertyMaxHeight:
10336 if (id == CSSValueAuto || id == CSSValueInternalExtendToZoom)
10337 validPrimitive = true;
10338 else
10339 validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonN eg));
10340 break;
10341 case CSSPropertyWidth: // shorthand
10342 return parseViewportShorthand(propId, CSSPropertyMinWidth, CSSPropertyMa xWidth, important);
10343 case CSSPropertyHeight:
10344 return parseViewportShorthand(propId, CSSPropertyMinHeight, CSSPropertyM axHeight, important);
10345 case CSSPropertyMinZoom: // auto | <number> | <percentage>
10346 case CSSPropertyMaxZoom:
10347 case CSSPropertyZoom:
10348 if (id == CSSValueAuto)
10349 validPrimitive = true;
10350 else
10351 validPrimitive = (!id && validUnit(value, FNumber | FPercent | FNonN eg));
10352 break;
10353 case CSSPropertyUserZoom: // zoom | fixed
10354 if (id == CSSValueZoom || id == CSSValueFixed)
10355 validPrimitive = true;
10356 break;
10357 case CSSPropertyOrientation: // auto | portrait | landscape
10358 if (id == CSSValueAuto || id == CSSValuePortrait || id == CSSValueLandsc ape)
10359 validPrimitive = true;
10360 default:
10361 break;
10362 }
10363
10364 RefPtr<CSSValue> parsedValue;
10365 if (validPrimitive) {
10366 parsedValue = parseValidPrimitive(id, value);
10367 m_valueList->next();
10368 }
10369
10370 if (parsedValue) {
10371 if (!m_valueList->current() || inShorthand()) {
10372 addProperty(propId, parsedValue.release(), important);
10373 return true;
10374 }
10375 }
10376
10377 return false;
10378 }
10379
10380 bool CSSParser::parseViewportShorthand(CSSPropertyID propId, CSSPropertyID first , CSSPropertyID second, bool important)
10381 {
10382 ASSERT(RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(m_c ontext.mode()));
10383 unsigned numValues = m_valueList->size();
10384
10385 if (numValues > 2)
10386 return false;
10387
10388 ShorthandScope scope(this, propId);
10389
10390 if (!parseViewportProperty(first, important))
10391 return false;
10392
10393 // If just one value is supplied, the second value
10394 // is implicitly initialized with the first value.
10395 if (numValues == 1)
10396 m_valueList->previous();
10397
10398 return parseViewportProperty(second, important);
10399 }
10400
10401 template <typename CharacterType>
10402 static CSSPropertyID cssPropertyID(const CharacterType* propertyName, unsigned l ength)
10403 {
10404 char buffer[maxCSSPropertyNameLength + 1]; // 1 for null character
10405
10406 for (unsigned i = 0; i != length; ++i) {
10407 CharacterType c = propertyName[i];
10408 if (c == 0 || c >= 0x7F)
10409 return CSSPropertyInvalid; // illegal character
10410 buffer[i] = toASCIILower(c);
10411 }
10412 buffer[length] = '\0';
10413
10414 const char* name = buffer;
10415 const Property* hashTableEntry = findProperty(name, length);
10416 return hashTableEntry ? static_cast<CSSPropertyID>(hashTableEntry->id) : CSS PropertyInvalid;
10417 }
10418
10419 CSSPropertyID cssPropertyID(const String& string)
10420 {
10421 unsigned length = string.length();
10422
10423 if (!length)
10424 return CSSPropertyInvalid;
10425 if (length > maxCSSPropertyNameLength)
10426 return CSSPropertyInvalid;
10427
10428 return string.is8Bit() ? cssPropertyID(string.characters8(), length) : cssPr opertyID(string.characters16(), length);
10429 }
10430
10431 CSSPropertyID cssPropertyID(const CSSParserString& string)
10432 {
10433 unsigned length = string.length();
10434
10435 if (!length)
10436 return CSSPropertyInvalid;
10437 if (length > maxCSSPropertyNameLength)
10438 return CSSPropertyInvalid;
10439
10440 return string.is8Bit() ? cssPropertyID(string.characters8(), length) : cssPr opertyID(string.characters16(), length);
10441 }
10442
10443 template <typename CharacterType>
10444 static CSSValueID cssValueKeywordID(const CharacterType* valueKeyword, unsigned length)
10445 {
10446 char buffer[maxCSSValueKeywordLength + 1]; // 1 for null character
10447
10448 for (unsigned i = 0; i != length; ++i) {
10449 CharacterType c = valueKeyword[i];
10450 if (c == 0 || c >= 0x7F)
10451 return CSSValueInvalid; // illegal character
10452 buffer[i] = WTF::toASCIILower(c);
10453 }
10454 buffer[length] = '\0';
10455
10456 const Value* hashTableEntry = findValue(buffer, length);
10457 return hashTableEntry ? static_cast<CSSValueID>(hashTableEntry->id) : CSSVal ueInvalid;
10458 }
10459
10460 CSSValueID cssValueKeywordID(const CSSParserString& string)
10461 {
10462 unsigned length = string.length();
10463 if (!length)
10464 return CSSValueInvalid;
10465 if (length > maxCSSValueKeywordLength)
10466 return CSSValueInvalid;
10467
10468 return string.is8Bit() ? cssValueKeywordID(string.characters8(), length) : c ssValueKeywordID(string.characters16(), length);
10469 }
10470
10471 bool isValidNthToken(const CSSParserString& token)
10472 {
10473 // The tokenizer checks for the construct of an+b.
10474 // However, since the {ident} rule precedes the {nth} rule, some of those
10475 // tokens are identified as string literal. Furthermore we need to accept
10476 // "odd" and "even" which does not match to an+b.
10477 return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
10478 || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
10479 }
10480
10481 }
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