| /* |
| * Copyright (C) 2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved. |
| * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com> |
| * Copyright (C) 2008 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
| * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. |
| * Copyright (C) 2012 Intel Corporation. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "core/css/parser/CSSPropertyParser.h" |
| |
| #include "core/StylePropertyShorthand.h" |
| #include "core/css/CSSBasicShapeValues.h" |
| #include "core/css/CSSBorderImage.h" |
| #include "core/css/CSSContentDistributionValue.h" |
| #include "core/css/CSSCounterValue.h" |
| #include "core/css/CSSCrossfadeValue.h" |
| #include "core/css/CSSCursorImageValue.h" |
| #include "core/css/CSSCustomIdentValue.h" |
| #include "core/css/CSSFunctionValue.h" |
| #include "core/css/CSSGridLineNamesValue.h" |
| #include "core/css/CSSImageSetValue.h" |
| #include "core/css/CSSImageValue.h" |
| #include "core/css/CSSPrimitiveValueMappings.h" |
| #include "core/css/CSSProperty.h" |
| #include "core/css/CSSPropertyMetadata.h" |
| #include "core/css/CSSQuadValue.h" |
| #include "core/css/CSSReflectValue.h" |
| #include "core/css/CSSShadowValue.h" |
| #include "core/css/CSSStringValue.h" |
| #include "core/css/CSSTimingFunctionValue.h" |
| #include "core/css/CSSURIValue.h" |
| #include "core/css/CSSValuePair.h" |
| #include "core/css/CSSValuePool.h" |
| #include "core/css/CSSVariableReferenceValue.h" |
| #include "core/css/HashTools.h" |
| #include "core/css/parser/CSSParserFastPaths.h" |
| #include "core/css/parser/CSSParserValues.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/style/GridCoordinate.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| |
| namespace blink { |
| |
| template <unsigned N> |
| static bool equalIgnoringCase(const CSSParserString& a, const char (&b)[N]) |
| { |
| unsigned length = N - 1; // Ignore the trailing null character |
| if (a.length() != length) |
| return false; |
| |
| return a.is8Bit() ? WTF::equalIgnoringCase(b, a.characters8(), length) : WTF::equalIgnoringCase(b, a.characters16(), length); |
| } |
| |
| void CSSPropertyParser::addProperty(CSSPropertyID propId, PassRefPtrWillBeRawPtr<CSSValue> value, bool important, bool implicit) |
| { |
| ASSERT(!isPropertyAlias(propId)); |
| |
| int shorthandIndex = 0; |
| bool setFromShorthand = false; |
| |
| if (m_currentShorthand) { |
| Vector<StylePropertyShorthand, 4> shorthands; |
| getMatchingShorthandsForLonghand(propId, &shorthands); |
| setFromShorthand = true; |
| if (shorthands.size() > 1) |
| shorthandIndex = indexOfShorthandForLonghand(m_currentShorthand, shorthands); |
| } |
| |
| m_parsedProperties.append(CSSProperty(propId, value, important, setFromShorthand, shorthandIndex, m_implicitShorthand || implicit)); |
| } |
| |
| void CSSPropertyParser::rollbackLastProperties(int num) |
| { |
| ASSERT(num >= 0); |
| ASSERT(m_parsedProperties.size() >= static_cast<unsigned>(num)); |
| m_parsedProperties.shrink(m_parsedProperties.size() - num); |
| } |
| |
| KURL CSSPropertyParser::completeURL(const String& url) const |
| { |
| return m_context.completeURL(url); |
| } |
| |
| bool CSSPropertyParser::validCalculationUnit(CSSParserValue* value, Units unitflags, ReleaseParsedCalcValueCondition releaseCalc) |
| { |
| bool mustBeNonNegative = unitflags & (FNonNeg | FPositiveInteger); |
| |
| if (!parseCalculation(value, mustBeNonNegative ? ValueRangeNonNegative : ValueRangeAll)) |
| return false; |
| |
| bool b = false; |
| switch (m_parsedCalculation->category()) { |
| case CalcLength: |
| b = (unitflags & FLength); |
| break; |
| case CalcNumber: |
| b = (unitflags & FNumber); |
| if (!b && (unitflags & (FInteger | FPositiveInteger)) && m_parsedCalculation->isInt()) |
| b = true; |
| if (b && mustBeNonNegative && m_parsedCalculation->isNegative()) |
| b = false; |
| // Always resolve calc() to a UnitType::Number in the CSSParserValue if there are no non-numbers specified in the unitflags. |
| if (b && !(unitflags & ~(FInteger | FNumber | FPositiveInteger | FNonNeg))) { |
| double number = m_parsedCalculation->doubleValue(); |
| if ((unitflags & FPositiveInteger) && number <= 0) { |
| b = false; |
| } else { |
| delete value->calcFunction; |
| value->setUnit(CSSPrimitiveValue::UnitType::Number); |
| value->fValue = number; |
| value->isInt = m_parsedCalculation->isInt(); |
| } |
| m_parsedCalculation.release(); |
| return b; |
| } |
| break; |
| case CalcPercent: |
| b = (unitflags & FPercent); |
| if (b && mustBeNonNegative && m_parsedCalculation->isNegative()) |
| b = false; |
| break; |
| case CalcPercentLength: |
| b = (unitflags & FPercent) && (unitflags & FLength); |
| break; |
| case CalcPercentNumber: |
| b = (unitflags & FPercent) && (unitflags & FNumber); |
| break; |
| case CalcAngle: |
| b = (unitflags & FAngle); |
| break; |
| case CalcTime: |
| b = (unitflags & FTime); |
| break; |
| case CalcFrequency: |
| b = (unitflags & FFrequency); |
| break; |
| case CalcOther: |
| break; |
| } |
| if (!b || releaseCalc == ReleaseParsedCalcValue) |
| m_parsedCalculation.release(); |
| return b; |
| } |
| |
| inline bool CSSPropertyParser::shouldAcceptUnitLessValues(CSSParserValue* value, Units unitflags, CSSParserMode cssParserMode) |
| { |
| // Quirks mode for certain properties and presentation attributes accept unit-less values for certain units. |
| return (unitflags & (FLength | FAngle)) |
| && (!value->fValue // 0 can always be unitless. |
| || isUnitLessLengthParsingEnabledForMode(cssParserMode) // HTML and SVG attribute values can always be unitless. |
| || (cssParserMode == HTMLQuirksMode && (unitflags & FUnitlessQuirk))); |
| } |
| |
| inline bool isCalculation(CSSParserValue* value) |
| { |
| return value->m_unit == CSSParserValue::CalcFunction; |
| } |
| |
| bool CSSPropertyParser::validUnit(CSSParserValue* value, Units unitflags, CSSParserMode cssParserMode, ReleaseParsedCalcValueCondition releaseCalc) |
| { |
| if (isCalculation(value)) |
| return validCalculationUnit(value, unitflags, releaseCalc); |
| |
| if (unitflags & FNonNeg && value->fValue < 0) |
| return false; |
| switch (value->unit()) { |
| case CSSPrimitiveValue::UnitType::Number: |
| if (unitflags & FNumber) |
| return true; |
| if (shouldAcceptUnitLessValues(value, unitflags, cssParserMode)) { |
| value->setUnit((unitflags & FLength) ? CSSPrimitiveValue::UnitType::Pixels : CSSPrimitiveValue::UnitType::Degrees); |
| return true; |
| } |
| if ((unitflags & FInteger) && value->isInt) |
| return true; |
| if ((unitflags & FPositiveInteger) && value->isInt && value->fValue > 0) |
| return true; |
| return false; |
| case CSSPrimitiveValue::UnitType::Percentage: |
| return unitflags & FPercent; |
| case CSSPrimitiveValue::UnitType::QuirkyEms: |
| if (cssParserMode != UASheetMode) |
| return false; |
| /* fallthrough intentional */ |
| case CSSPrimitiveValue::UnitType::Ems: |
| case CSSPrimitiveValue::UnitType::Rems: |
| case CSSPrimitiveValue::UnitType::Chs: |
| case CSSPrimitiveValue::UnitType::Exs: |
| case CSSPrimitiveValue::UnitType::Pixels: |
| case CSSPrimitiveValue::UnitType::Centimeters: |
| case CSSPrimitiveValue::UnitType::Millimeters: |
| case CSSPrimitiveValue::UnitType::Inches: |
| case CSSPrimitiveValue::UnitType::Points: |
| case CSSPrimitiveValue::UnitType::Picas: |
| case CSSPrimitiveValue::UnitType::UserUnits: |
| case CSSPrimitiveValue::UnitType::ViewportWidth: |
| case CSSPrimitiveValue::UnitType::ViewportHeight: |
| case CSSPrimitiveValue::UnitType::ViewportMin: |
| case CSSPrimitiveValue::UnitType::ViewportMax: |
| return unitflags & FLength; |
| case CSSPrimitiveValue::UnitType::Milliseconds: |
| case CSSPrimitiveValue::UnitType::Seconds: |
| return unitflags & FTime; |
| case CSSPrimitiveValue::UnitType::Degrees: |
| case CSSPrimitiveValue::UnitType::Radians: |
| case CSSPrimitiveValue::UnitType::Gradians: |
| case CSSPrimitiveValue::UnitType::Turns: |
| return unitflags & FAngle; |
| case CSSPrimitiveValue::UnitType::DotsPerPixel: |
| case CSSPrimitiveValue::UnitType::DotsPerInch: |
| case CSSPrimitiveValue::UnitType::DotsPerCentimeter: |
| return unitflags & FResolution; |
| default: |
| return false; |
| } |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::createPrimitiveNumericValue(CSSParserValue* value) |
| { |
| if (m_parsedCalculation) { |
| ASSERT(isCalculation(value)); |
| return CSSPrimitiveValue::create(m_parsedCalculation.release()); |
| } |
| |
| ASSERT((value->unit() >= CSSPrimitiveValue::UnitType::Number && value->unit() <= CSSPrimitiveValue::UnitType::Kilohertz) |
| || (value->unit() >= CSSPrimitiveValue::UnitType::Turns && value->unit() <= CSSPrimitiveValue::UnitType::Chs) |
| || (value->unit() >= CSSPrimitiveValue::UnitType::ViewportWidth && value->unit() <= CSSPrimitiveValue::UnitType::ViewportMax) |
| || (value->unit() >= CSSPrimitiveValue::UnitType::DotsPerPixel && value->unit() <= CSSPrimitiveValue::UnitType::DotsPerCentimeter)); |
| return cssValuePool().createValue(value->fValue, value->unit()); |
| } |
| |
| inline PassRefPtrWillBeRawPtr<CSSStringValue> CSSPropertyParser::createPrimitiveStringValue(CSSParserValue* value) |
| { |
| ASSERT(value->m_unit == CSSParserValue::String || value->m_unit == CSSParserValue::Identifier); |
| return CSSStringValue::create(value->string); |
| } |
| |
| inline PassRefPtrWillBeRawPtr<CSSCustomIdentValue> CSSPropertyParser::createPrimitiveCustomIdentValue(CSSParserValue* value) |
| { |
| ASSERT(value->m_unit == CSSParserValue::String || value->m_unit == CSSParserValue::Identifier); |
| return CSSCustomIdentValue::create(value->string); |
| } |
| |
| inline PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::createCSSImageValueWithReferrer(const AtomicString& rawValue, const KURL& url) |
| { |
| RefPtrWillBeRawPtr<CSSValue> imageValue = CSSImageValue::create(rawValue, url); |
| toCSSImageValue(imageValue.get())->setReferrer(m_context.referrer()); |
| return imageValue; |
| } |
| |
| static inline bool isComma(CSSParserValue* value) |
| { |
| ASSERT(value); |
| return value->m_unit == CSSParserValue::Operator && value->iValue == ','; |
| } |
| |
| static bool consumeComma(CSSParserValueList* valueList) |
| { |
| CSSParserValue* value = valueList->current(); |
| if (!value || !isComma(value)) |
| return false; |
| valueList->next(); |
| return true; |
| } |
| |
| static inline bool isForwardSlashOperator(CSSParserValue* value) |
| { |
| ASSERT(value); |
| return value->m_unit == CSSParserValue::Operator && value->iValue == '/'; |
| } |
| |
| static bool isGeneratedImageValue(CSSParserValue* val) |
| { |
| if (val->m_unit != CSSParserValue::Function) |
| return false; |
| |
| CSSValueID id = val->function->id; |
| return id == CSSValueLinearGradient |
| || id == CSSValueRadialGradient |
| || id == CSSValueRepeatingLinearGradient |
| || id == CSSValueRepeatingRadialGradient |
| || id == CSSValueWebkitLinearGradient |
| || id == CSSValueWebkitRadialGradient |
| || id == CSSValueWebkitRepeatingLinearGradient |
| || id == CSSValueWebkitRepeatingRadialGradient |
| || id == CSSValueWebkitGradient |
| || id == CSSValueWebkitCrossFade; |
| } |
| |
| inline PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseValidPrimitive(CSSValueID identifier, CSSParserValue* value) |
| { |
| if (identifier) |
| return cssValuePool().createIdentifierValue(identifier); |
| if (value->unit() >= CSSPrimitiveValue::UnitType::Number && value->unit() <= CSSPrimitiveValue::UnitType::Kilohertz) |
| return createPrimitiveNumericValue(value); |
| if (value->unit() >= CSSPrimitiveValue::UnitType::Turns && value->unit() <= CSSPrimitiveValue::UnitType::Chs) |
| return createPrimitiveNumericValue(value); |
| if (value->unit() >= CSSPrimitiveValue::UnitType::ViewportWidth && value->unit() <= CSSPrimitiveValue::UnitType::ViewportMax) |
| return createPrimitiveNumericValue(value); |
| if (value->unit() >= CSSPrimitiveValue::UnitType::DotsPerPixel && value->unit() <= CSSPrimitiveValue::UnitType::DotsPerCentimeter) |
| return createPrimitiveNumericValue(value); |
| if (value->unit() == CSSPrimitiveValue::UnitType::QuirkyEms) |
| return CSSPrimitiveValue::create(value->fValue, CSSPrimitiveValue::UnitType::QuirkyEms); |
| if (isCalculation(value)) |
| return CSSPrimitiveValue::create(m_parsedCalculation.release()); |
| |
| return nullptr; |
| } |
| |
| void CSSPropertyParser::addExpandedPropertyForValue(CSSPropertyID propId, PassRefPtrWillBeRawPtr<CSSValue> prpValue, bool important) |
| { |
| const StylePropertyShorthand& shorthand = shorthandForProperty(propId); |
| unsigned shorthandLength = shorthand.length(); |
| if (!shorthandLength) { |
| addProperty(propId, prpValue, important); |
| return; |
| } |
| |
| RefPtrWillBeRawPtr<CSSValue> value = prpValue; |
| ShorthandScope scope(this, propId); |
| const CSSPropertyID* longhands = shorthand.properties(); |
| for (unsigned i = 0; i < shorthandLength; ++i) |
| addProperty(longhands[i], value, important); |
| } |
| |
| bool CSSPropertyParser::parseValue(CSSPropertyID unresolvedProperty, bool important) |
| { |
| CSSPropertyID propId = resolveCSSPropertyID(unresolvedProperty); |
| |
| CSSParserValue* value = m_valueList->current(); |
| |
| // Note: m_parsedCalculation is used to pass the calc value to validUnit and then cleared at the end of this function. |
| // FIXME: This is to avoid having to pass parsedCalc to all validUnit callers. |
| ASSERT(!m_parsedCalculation); |
| |
| CSSValueID id = value->id; |
| |
| if (id == CSSValueInherit) { |
| if (m_valueList->size() != 1) |
| return false; |
| addExpandedPropertyForValue(propId, cssValuePool().createInheritedValue(), important); |
| return true; |
| } else if (id == CSSValueInitial) { |
| if (m_valueList->size() != 1) |
| return false; |
| addExpandedPropertyForValue(propId, cssValuePool().createExplicitInitialValue(), important); |
| return true; |
| } else if (id == CSSValueUnset) { |
| if (m_valueList->size() != 1) |
| return false; |
| addExpandedPropertyForValue(propId, cssValuePool().createUnsetValue(), important); |
| return true; |
| } |
| |
| if (RuntimeEnabledFeatures::cssVariablesEnabled() && value->id == CSSValueInternalVariableValue) { |
| // We don't expand the shorthand here because crazypants. |
| m_parsedProperties.append(CSSProperty(propId, CSSVariableReferenceValue::create(value->variableData), important, false, 0, m_implicitShorthand)); |
| m_valueList->next(); |
| return true; |
| } |
| |
| if (CSSParserFastPaths::isKeywordPropertyID(propId)) { |
| if (!CSSParserFastPaths::isValidKeywordPropertyAndValue(propId, id)) |
| return false; |
| if (m_valueList->next() && !inShorthand()) |
| return false; |
| addProperty(propId, cssValuePool().createIdentifierValue(id), important); |
| return true; |
| } |
| |
| RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr; |
| if ((parsedValue = parseSingleValue(unresolvedProperty))) { |
| if (!m_range.atEnd()) |
| return false; |
| addProperty(propId, parsedValue.release(), important); |
| return true; |
| } |
| if (parseShorthand(unresolvedProperty, important)) |
| return true; |
| |
| bool validPrimitive = false; |
| Units unitless = FUnknown; |
| |
| switch (propId) { |
| case CSSPropertyContent: // [ <string> | <uri> | <counter> | attr(X) | open-quote | |
| // close-quote | no-open-quote | no-close-quote ]+ | inherit |
| parsedValue = parseContent(); |
| break; |
| |
| /* Start of supported CSS properties with validation. This is needed for parseShorthand to work |
| * correctly and allows optimization in blink::applyRule(..) |
| */ |
| |
| case CSSPropertyTextAlign: |
| // left | right | center | justify | -webkit-left | -webkit-right | -webkit-center | -webkit-match-parent |
| // | start | end | <string> | inherit | -webkit-auto (converted to start) |
| // FIXME: <string> not supported right now |
| if ((id >= CSSValueWebkitAuto && id <= CSSValueWebkitMatchParent) || id == CSSValueStart || id == CSSValueEnd) { |
| validPrimitive = true; |
| } |
| break; |
| |
| case CSSPropertyBackgroundColor: // <color> | inherit |
| case CSSPropertyBorderTopColor: // <color> | inherit |
| case CSSPropertyBorderRightColor: |
| case CSSPropertyBorderBottomColor: |
| case CSSPropertyBorderLeftColor: |
| case CSSPropertyWebkitColumnRuleColor: |
| parsedValue = parseColor(m_valueList->current(), acceptQuirkyColors(propId)); |
| if (parsedValue) |
| m_valueList->next(); |
| break; |
| |
| case CSSPropertyCursor: { |
| // Grammar defined by CSS3 UI and modified by CSS4 images: |
| // [ [<image> [<x> <y>]?,]* |
| // [ auto | crosshair | default | pointer | progress | move | e-resize | ne-resize | |
| // nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize | ew-resize | |
| // ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | text | wait | help | |
| // vertical-text | cell | context-menu | alias | copy | no-drop | not-allowed | all-scroll | |
| // zoom-in | zoom-out | -webkit-grab | -webkit-grabbing | -webkit-zoom-in | -webkit-zoom-out ] ] | inherit |
| RefPtrWillBeRawPtr<CSSValueList> list = nullptr; |
| while (value) { |
| RefPtrWillBeRawPtr<CSSValue> image = nullptr; |
| if (value->m_unit == CSSParserValue::URI) { |
| AtomicString uri = value->string; |
| if (!uri.isNull()) |
| image = createCSSImageValueWithReferrer(uri, completeURL(uri)); |
| } else if (value->m_unit == CSSParserValue::Function && value->function->id == CSSValueWebkitImageSet) { |
| image = parseImageSet(m_valueList); |
| if (!image) |
| break; |
| } else |
| break; |
| |
| Vector<int> coords; |
| value = m_valueList->next(); |
| while (value && validUnit(value, FNumber)) { |
| coords.append(int(value->fValue)); |
| value = m_valueList->next(); |
| } |
| bool hotSpotSpecified = false; |
| IntPoint hotSpot(-1, -1); |
| int nrcoords = coords.size(); |
| if (nrcoords > 0 && nrcoords != 2) |
| return false; |
| if (nrcoords == 2) { |
| hotSpotSpecified = true; |
| hotSpot = IntPoint(coords[0], coords[1]); |
| } |
| |
| if (!list) |
| list = CSSValueList::createCommaSeparated(); |
| |
| if (image) |
| list->append(CSSCursorImageValue::create(image, hotSpotSpecified, hotSpot)); |
| |
| if (!consumeComma(m_valueList)) |
| return false; |
| value = m_valueList->current(); |
| } |
| if (value && m_context.useCounter()) { |
| if (value->id == CSSValueWebkitZoomIn) |
| m_context.useCounter()->count(UseCounter::PrefixedCursorZoomIn); |
| else if (value->id == CSSValueWebkitZoomOut) |
| m_context.useCounter()->count(UseCounter::PrefixedCursorZoomOut); |
| } |
| if (list) { |
| if (!value) |
| return false; |
| if (inQuirksMode() && value->id == CSSValueHand) // MSIE 5 compatibility :/ |
| list->append(cssValuePool().createIdentifierValue(CSSValuePointer)); |
| else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitZoomOut) || value->id == CSSValueCopy || value->id == CSSValueNone) |
| list->append(cssValuePool().createIdentifierValue(value->id)); |
| m_valueList->next(); |
| parsedValue = list.release(); |
| break; |
| } else if (value) { |
| id = value->id; |
| if (inQuirksMode() && value->id == CSSValueHand) { // MSIE 5 compatibility :/ |
| id = CSSValuePointer; |
| validPrimitive = true; |
| } else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitZoomOut) || value->id == CSSValueCopy || value->id == CSSValueNone) |
| validPrimitive = true; |
| } else { |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| break; |
| } |
| case CSSPropertyImageOrientation: |
| if (RuntimeEnabledFeatures::imageOrientationEnabled()) |
| validPrimitive = value->id == CSSValueFromImage || (value->unit() != CSSPrimitiveValue::UnitType::Number && validUnit(value, FAngle) && value->fValue == 0); |
| break; |
| |
| case CSSPropertyBackgroundBlendMode: |
| case CSSPropertyBackgroundAttachment: |
| case CSSPropertyBackgroundClip: |
| case CSSPropertyWebkitBackgroundClip: |
| case CSSPropertyWebkitBackgroundComposite: |
| case CSSPropertyBackgroundImage: |
| case CSSPropertyBackgroundOrigin: |
| case CSSPropertyMaskSourceType: |
| case CSSPropertyWebkitBackgroundOrigin: |
| case CSSPropertyBackgroundPosition: |
| case CSSPropertyBackgroundPositionX: |
| case CSSPropertyBackgroundPositionY: |
| case CSSPropertyBackgroundSize: |
| case CSSPropertyBackgroundRepeat: |
| case CSSPropertyWebkitMaskClip: |
| case CSSPropertyWebkitMaskComposite: |
| case CSSPropertyWebkitMaskImage: |
| case CSSPropertyWebkitMaskOrigin: |
| case CSSPropertyWebkitMaskPosition: |
| case CSSPropertyWebkitMaskPositionX: |
| case CSSPropertyWebkitMaskPositionY: |
| case CSSPropertyWebkitMaskSize: |
| case CSSPropertyWebkitMaskRepeat: |
| case CSSPropertyWebkitMaskRepeatX: |
| case CSSPropertyWebkitMaskRepeatY: |
| { |
| RefPtrWillBeRawPtr<CSSValue> val1 = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> val2 = nullptr; |
| CSSPropertyID propId1, propId2; |
| bool result = false; |
| if (parseFillProperty(unresolvedProperty, propId1, propId2, val1, val2)) { |
| if (propId == CSSPropertyBackgroundPosition || |
| propId == CSSPropertyBackgroundRepeat || |
| propId == CSSPropertyWebkitMaskPosition || |
| propId == CSSPropertyWebkitMaskRepeat) { |
| ShorthandScope scope(this, propId); |
| addProperty(propId1, val1.release(), important); |
| if (val2) |
| addProperty(propId2, val2.release(), important); |
| } else { |
| addProperty(propId1, val1.release(), important); |
| if (val2) |
| addProperty(propId2, val2.release(), important); |
| } |
| result = true; |
| } |
| m_implicitShorthand = false; |
| return result; |
| } |
| case CSSPropertyObjectPosition: |
| parsedValue = parsePosition(m_valueList); |
| break; |
| case CSSPropertyListStyleImage: // <uri> | none | inherit |
| case CSSPropertyBorderImageSource: |
| case CSSPropertyWebkitMaskBoxImageSource: |
| if (id == CSSValueNone) { |
| parsedValue = cssValuePool().createIdentifierValue(CSSValueNone); |
| m_valueList->next(); |
| } else if (value->m_unit == CSSParserValue::URI) { |
| parsedValue = createCSSImageValueWithReferrer(value->string, completeURL(value->string)); |
| m_valueList->next(); |
| } else if (isGeneratedImageValue(value)) { |
| if (parseGeneratedImage(m_valueList, parsedValue)) |
| m_valueList->next(); |
| else |
| return false; |
| } else if (value->m_unit == CSSParserValue::Function && value->function->id == CSSValueWebkitImageSet) { |
| parsedValue = parseImageSet(m_valueList); |
| if (!parsedValue) |
| return false; |
| m_valueList->next(); |
| } |
| break; |
| |
| case CSSPropertyBorderTopWidth: //// <border-width> | inherit |
| case CSSPropertyBorderRightWidth: // Which is defined as |
| case CSSPropertyBorderBottomWidth: // thin | medium | thick | <length> |
| case CSSPropertyBorderLeftWidth: |
| if (!inShorthand() || m_currentShorthand == CSSPropertyBorderWidth) |
| unitless = FUnitlessQuirk; |
| // fall through |
| case CSSPropertyWebkitColumnRuleWidth: |
| if (id == CSSValueThin || id == CSSValueMedium || id == CSSValueThick) |
| validPrimitive = true; |
| else |
| validPrimitive = validUnit(value, FLength | FNonNeg | unitless); |
| break; |
| |
| case CSSPropertyPaddingTop: //// <padding-width> | inherit |
| case CSSPropertyPaddingRight: // Which is defined as |
| case CSSPropertyPaddingBottom: // <length> | <percentage> |
| case CSSPropertyPaddingLeft: //// |
| unitless = FUnitlessQuirk; |
| // fall through |
| case CSSPropertyWebkitPaddingStart: |
| case CSSPropertyWebkitPaddingEnd: |
| case CSSPropertyWebkitPaddingBefore: |
| case CSSPropertyWebkitPaddingAfter: |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg | unitless); |
| break; |
| |
| case CSSPropertyVerticalAlign: |
| // baseline | sub | super | top | text-top | middle | bottom | text-bottom | |
| // <percentage> | <length> | inherit |
| |
| if (id >= CSSValueBaseline && id <= CSSValueWebkitBaselineMiddle) |
| validPrimitive = true; |
| else |
| validPrimitive = validUnit(value, FLength | FPercent | FUnitlessQuirk); |
| break; |
| |
| case CSSPropertyBottom: // <length> | <percentage> | auto | inherit |
| case CSSPropertyLeft: // <length> | <percentage> | auto | inherit |
| case CSSPropertyRight: // <length> | <percentage> | auto | inherit |
| case CSSPropertyTop: // <length> | <percentage> | auto | inherit |
| case CSSPropertyMarginTop: //// <margin-width> | inherit |
| case CSSPropertyMarginRight: // Which is defined as |
| case CSSPropertyMarginBottom: // <length> | <percentage> | auto | inherit |
| case CSSPropertyMarginLeft: //// |
| unitless = FUnitlessQuirk; |
| // fall through |
| case CSSPropertyWebkitMarginStart: |
| case CSSPropertyWebkitMarginEnd: |
| case CSSPropertyWebkitMarginBefore: |
| case CSSPropertyWebkitMarginAfter: |
| if (id == CSSValueAuto) |
| validPrimitive = true; |
| else |
| validPrimitive = validUnit(value, FLength | FPercent | unitless); |
| break; |
| |
| case CSSPropertyTextUnderlinePosition: |
| // auto | [ under || [ left | right ] ], but we only support auto | under for now |
| ASSERT(RuntimeEnabledFeatures::css3TextDecorationsEnabled()); |
| validPrimitive = (id == CSSValueAuto || id == CSSValueUnder); |
| break; |
| |
| case CSSPropertySrc: |
| case CSSPropertyUnicodeRange: |
| /* @font-face only descriptors */ |
| break; |
| |
| /* CSS3 properties */ |
| |
| case CSSPropertyBorderImage: |
| case CSSPropertyWebkitMaskBoxImage: |
| return parseBorderImageShorthand(propId, important); |
| case CSSPropertyWebkitBorderImage: { |
| if (RefPtrWillBeRawPtr<CSSValue> result = parseBorderImage(propId)) { |
| addProperty(propId, result, important); |
| return true; |
| } |
| return false; |
| } |
| |
| case CSSPropertyBorderImageOutset: |
| case CSSPropertyWebkitMaskBoxImageOutset: { |
| RefPtrWillBeRawPtr<CSSQuadValue> result = nullptr; |
| if (parseBorderImageOutset(result)) { |
| addProperty(propId, result, important); |
| return true; |
| } |
| break; |
| } |
| case CSSPropertyBorderImageRepeat: |
| case CSSPropertyWebkitMaskBoxImageRepeat: { |
| RefPtrWillBeRawPtr<CSSValue> result = nullptr; |
| if (parseBorderImageRepeat(result)) { |
| addProperty(propId, result, important); |
| return true; |
| } |
| break; |
| } |
| case CSSPropertyBorderImageSlice: |
| case CSSPropertyWebkitMaskBoxImageSlice: { |
| RefPtrWillBeRawPtr<CSSBorderImageSliceValue> result = nullptr; |
| if (parseBorderImageSlice(propId, result)) { |
| addProperty(propId, result, important); |
| return true; |
| } |
| break; |
| } |
| case CSSPropertyBorderImageWidth: |
| case CSSPropertyWebkitMaskBoxImageWidth: { |
| RefPtrWillBeRawPtr<CSSQuadValue> result = nullptr; |
| if (parseBorderImageWidth(result)) { |
| addProperty(propId, result, important); |
| return true; |
| } |
| break; |
| } |
| case CSSPropertyBorderTopRightRadius: |
| case CSSPropertyBorderTopLeftRadius: |
| case CSSPropertyBorderBottomLeftRadius: |
| case CSSPropertyBorderBottomRightRadius: { |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg); |
| if (!validPrimitive) |
| return false; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1 = createPrimitiveNumericValue(value); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2 = nullptr; |
| value = m_valueList->next(); |
| if (value) { |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg); |
| if (!validPrimitive) |
| return false; |
| parsedValue2 = createPrimitiveNumericValue(value); |
| } else |
| parsedValue2 = parsedValue1; |
| |
| if (m_valueList->next()) |
| return false; |
| addProperty(propId, CSSValuePair::create(parsedValue1.release(), parsedValue2.release(), CSSValuePair::DropIdenticalValues), important); |
| return true; |
| } |
| case CSSPropertyBorderRadius: |
| case CSSPropertyAliasWebkitBorderRadius: |
| return parseBorderRadius(unresolvedProperty, important); |
| case CSSPropertyWebkitBoxReflect: |
| if (id == CSSValueNone) |
| validPrimitive = true; |
| else |
| parsedValue = parseReflect(); |
| break; |
| case CSSPropertyFontSizeAdjust: // none | <number> |
| ASSERT(RuntimeEnabledFeatures::cssFontSizeAdjustEnabled()); |
| validPrimitive = (id == CSSValueNone) ? true : validUnit(value, FNumber | FNonNeg); |
| break; |
| case CSSPropertyOpacity: |
| case CSSPropertyWebkitBoxFlex: |
| validPrimitive = validUnit(value, FNumber); |
| break; |
| case CSSPropertyWebkitBoxFlexGroup: |
| validPrimitive = validUnit(value, FInteger | FNonNeg); |
| break; |
| case CSSPropertyWebkitBoxOrdinalGroup: |
| validPrimitive = validUnit(value, FInteger | FNonNeg) && value->fValue; |
| break; |
| case CSSPropertyFlex: { |
| ShorthandScope scope(this, propId); |
| if (id == CSSValueNone) { |
| addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Number), important); |
| addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Number), important); |
| addProperty(CSSPropertyFlexBasis, cssValuePool().createIdentifierValue(CSSValueAuto), important); |
| return true; |
| } |
| return parseFlex(m_valueList, important); |
| } |
| case CSSPropertyFlexBasis: |
| // FIXME: Support intrinsic dimensions too. |
| if (id == CSSValueAuto) |
| validPrimitive = true; |
| else |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg); |
| break; |
| case CSSPropertyFlexGrow: |
| case CSSPropertyFlexShrink: |
| validPrimitive = validUnit(value, FNumber | FNonNeg); |
| break; |
| case CSSPropertyOrder: |
| validPrimitive = validUnit(value, FInteger); |
| break; |
| case CSSPropertyTransformOrigin: { |
| RefPtrWillBeRawPtr<CSSValueList> list = parseTransformOrigin(); |
| if (!list) |
| return false; |
| // These values are added to match gecko serialization. |
| if (list->length() == 1) |
| list->append(cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage)); |
| if (list->length() == 2) |
| list->append(cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Pixels)); |
| addProperty(propId, list.release(), important); |
| return true; |
| } |
| |
| case CSSPropertyTranslate: { |
| // translate : [ <length> | <percentage> ] [[ <length> | <percentage> ] <length>? ]? |
| // defaults to 0 on all axis, note that the last value CANNOT be a percentage |
| ASSERT(RuntimeEnabledFeatures::cssIndependentTransformPropertiesEnabled()); |
| RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated(); |
| if (!validUnit(value, FLength | FPercent)) |
| return false; |
| |
| list->append(createPrimitiveNumericValue(value)); |
| value = m_valueList->next(); |
| |
| if (value) { |
| if (!validUnit(value, FLength | FPercent)) |
| return false; |
| |
| list->append(createPrimitiveNumericValue(value)); |
| value = m_valueList->next(); |
| |
| if (value) { |
| if (!validUnit(value, FLength)) |
| return false; |
| |
| list->append(createPrimitiveNumericValue(value)); |
| value = m_valueList->next(); |
| } |
| } |
| |
| parsedValue = list.release(); |
| break; |
| } |
| |
| case CSSPropertyScale: { // scale: <number>{1,3}, default scale for all axis is 1 |
| ASSERT(RuntimeEnabledFeatures::cssIndependentTransformPropertiesEnabled()); |
| RefPtrWillBeRawPtr<CSSValueList> scaleList = CSSValueList::createSpaceSeparated(); |
| |
| for (unsigned i = 0; value && i < 3; i++) { // up to 3 dimensions of scale |
| if (!validUnit(value, FNumber)) |
| return false; |
| scaleList->append(createPrimitiveNumericValue(value)); |
| value = m_valueList->next(); |
| } |
| |
| parsedValue = scaleList.release(); |
| break; |
| } |
| |
| case CSSPropertyWebkitPerspectiveOriginX: |
| case CSSPropertyWebkitTransformOriginX: |
| parsedValue = parseFillPositionX(m_valueList); |
| if (parsedValue) |
| m_valueList->next(); |
| break; |
| case CSSPropertyWebkitPerspectiveOriginY: |
| case CSSPropertyWebkitTransformOriginY: |
| parsedValue = parseFillPositionY(m_valueList); |
| if (parsedValue) |
| m_valueList->next(); |
| break; |
| case CSSPropertyWebkitTransformOriginZ: |
| validPrimitive = validUnit(value, FLength); |
| break; |
| case CSSPropertyPerspective: |
| if (id == CSSValueNone) { |
| validPrimitive = true; |
| } else if (validUnit(value, FLength) && (m_parsedCalculation || value->fValue > 0)) { |
| validPrimitive = true; |
| } else if (unresolvedProperty == CSSPropertyAliasWebkitPerspective && validUnit(value, FNumber) && value->fValue > 0) { |
| value->setUnit(CSSPrimitiveValue::UnitType::Pixels); |
| validPrimitive = true; |
| } else { |
| return false; |
| } |
| break; |
| case CSSPropertyPerspectiveOrigin: { |
| RefPtrWillBeRawPtr<CSSValueList> list = parseTransformOrigin(); |
| if (!list || list->length() == 3) |
| return false; |
| // This values are added to match gecko serialization. |
| if (list->length() == 1) |
| list->append(cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage)); |
| addProperty(propId, list.release(), important); |
| return true; |
| } |
| |
| case CSSPropertyJustifyContent: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseContentDistributionOverflowPosition(); |
| break; |
| case CSSPropertyJustifySelf: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseItemPositionOverflowPosition(propId, important); |
| case CSSPropertyJustifyItems: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| if (parseLegacyPosition(propId, important)) |
| return true; |
| |
| m_valueList->setCurrentIndex(0); |
| return parseItemPositionOverflowPosition(propId, important); |
| case CSSPropertyGridAutoFlow: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseGridAutoFlow(*m_valueList); |
| break; |
| case CSSPropertyGridAutoColumns: |
| case CSSPropertyGridAutoRows: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseGridTrackSize(*m_valueList); |
| break; |
| |
| case CSSPropertyGridTemplateColumns: |
| case CSSPropertyGridTemplateRows: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseGridTrackList(); |
| break; |
| |
| case CSSPropertyGridColumnEnd: |
| case CSSPropertyGridColumnStart: |
| case CSSPropertyGridRowEnd: |
| case CSSPropertyGridRowStart: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseGridPosition(); |
| break; |
| |
| case CSSPropertyGridColumnGap: |
| case CSSPropertyGridRowGap: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| validPrimitive = validUnit(value, FLength | FNonNeg); |
| break; |
| |
| case CSSPropertyGridGap: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseGridGapShorthand(important); |
| |
| case CSSPropertyGridColumn: |
| case CSSPropertyGridRow: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseGridItemPositionShorthand(propId, important); |
| |
| case CSSPropertyGridArea: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseGridAreaShorthand(important); |
| |
| case CSSPropertyGridTemplateAreas: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseGridTemplateAreas(); |
| break; |
| |
| case CSSPropertyGridTemplate: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseGridTemplateShorthand(important); |
| |
| case CSSPropertyGrid: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseGridShorthand(important); |
| |
| // End of CSS3 properties |
| |
| case CSSPropertyWebkitAppRegion: |
| if (id >= CSSValueDrag && id <= CSSValueNoDrag) |
| validPrimitive = true; |
| break; |
| |
| /* shorthand properties */ |
| case CSSPropertyBackground: { |
| // Position must come before color in this array because a plain old "0" is a legal color |
| // in quirks mode but it's usually the X coordinate of a position. |
| const CSSPropertyID properties[] = { CSSPropertyBackgroundImage, CSSPropertyBackgroundRepeat, |
| CSSPropertyBackgroundAttachment, CSSPropertyBackgroundPosition, CSSPropertyBackgroundOrigin, |
| CSSPropertyBackgroundClip, CSSPropertyBackgroundColor, CSSPropertyBackgroundSize }; |
| return parseFillShorthand(propId, properties, WTF_ARRAY_LENGTH(properties), important); |
| } |
| case CSSPropertyWebkitMask: { |
| const CSSPropertyID properties[] = { CSSPropertyWebkitMaskImage, CSSPropertyWebkitMaskRepeat, |
| CSSPropertyWebkitMaskPosition, CSSPropertyWebkitMaskOrigin, CSSPropertyWebkitMaskClip, CSSPropertyWebkitMaskSize }; |
| return parseFillShorthand(propId, properties, WTF_ARRAY_LENGTH(properties), important); |
| } |
| case CSSPropertyBorder: |
| // [ 'border-width' || 'border-style' || <color> ] | inherit |
| { |
| if (parseShorthand(propId, borderShorthandForParsing(), important)) { |
| // The CSS3 Borders and Backgrounds specification says that border also resets border-image. It's as |
| // though a value of none was specified for the image. |
| addExpandedPropertyForValue(CSSPropertyBorderImage, cssValuePool().createImplicitInitialValue(), important); |
| return true; |
| } |
| return false; |
| } |
| case CSSPropertyBorderTop: |
| // [ 'border-top-width' || 'border-style' || <color> ] | inherit |
| return parseShorthand(propId, borderTopShorthand(), important); |
| case CSSPropertyBorderRight: |
| // [ 'border-right-width' || 'border-style' || <color> ] | inherit |
| return parseShorthand(propId, borderRightShorthand(), important); |
| case CSSPropertyBorderBottom: |
| // [ 'border-bottom-width' || 'border-style' || <color> ] | inherit |
| return parseShorthand(propId, borderBottomShorthand(), important); |
| case CSSPropertyBorderLeft: |
| // [ 'border-left-width' || 'border-style' || <color> ] | inherit |
| return parseShorthand(propId, borderLeftShorthand(), important); |
| case CSSPropertyBorderColor: |
| // <color>{1,4} | inherit |
| return parse4Values(propId, borderColorShorthand().properties(), important); |
| case CSSPropertyBorderWidth: |
| // <border-width>{1,4} | inherit |
| return parse4Values(propId, borderWidthShorthand().properties(), important); |
| case CSSPropertyBorderStyle: |
| // <border-style>{1,4} | inherit |
| return parse4Values(propId, borderStyleShorthand().properties(), important); |
| case CSSPropertyMargin: |
| // <margin-width>{1,4} | inherit |
| return parse4Values(propId, marginShorthand().properties(), important); |
| case CSSPropertyPadding: |
| // <padding-width>{1,4} | inherit |
| return parse4Values(propId, paddingShorthand().properties(), important); |
| case CSSPropertyFlexFlow: |
| return parseShorthand(propId, flexFlowShorthand(), important); |
| case CSSPropertyListStyle: |
| return parseShorthand(propId, listStyleShorthand(), important); |
| case CSSPropertyWebkitColumnRule: |
| return parseShorthand(propId, webkitColumnRuleShorthand(), important); |
| case CSSPropertyInvalid: |
| return false; |
| // CSS Text Layout Module Level 3: Vertical writing support |
| case CSSPropertyWebkitTextOrientation: |
| // FIXME: For now just support sideways, sideways-right, upright and vertical-right. |
| if (id == CSSValueSideways || id == CSSValueSidewaysRight || id == CSSValueVerticalRight || id == CSSValueUpright) |
| validPrimitive = true; |
| break; |
| |
| case CSSPropertyWebkitClipPath: |
| if (id == CSSValueNone) { |
| validPrimitive = true; |
| } else if (value->m_unit == CSSParserValue::Function) { |
| parsedValue = parseBasicShape(); |
| } else if (value->m_unit == CSSParserValue::URI) { |
| parsedValue = CSSURIValue::create(value->string); |
| addProperty(propId, parsedValue.release(), important); |
| return true; |
| } |
| break; |
| case CSSPropertyShapeOutside: |
| if (id == CSSValueNone) |
| validPrimitive = true; |
| else |
| parsedValue = parseShapeProperty(propId); |
| break; |
| case CSSPropertyShapeMargin: |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg); |
| break; |
| case CSSPropertyShapeImageThreshold: |
| validPrimitive = validUnit(value, FNumber); |
| break; |
| |
| case CSSPropertyAlignContent: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| parsedValue = parseContentDistributionOverflowPosition(); |
| break; |
| |
| case CSSPropertyAlignSelf: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseItemPositionOverflowPosition(propId, important); |
| |
| case CSSPropertyAlignItems: |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| return parseItemPositionOverflowPosition(propId, important); |
| |
| // Properties below are validated inside parseViewportProperty, because we |
| // check for parser state. We need to invalidate if someone adds them outside |
| // a @viewport rule. |
| case CSSPropertyMaxZoom: |
| case CSSPropertyMinZoom: |
| case CSSPropertyOrientation: |
| case CSSPropertyUserZoom: |
| validPrimitive = false; |
| break; |
| |
| // These were not accepted by the new path above so we should return false. |
| case CSSPropertyWebkitMarginCollapse: |
| case CSSPropertyWillChange: |
| case CSSPropertyPage: |
| case CSSPropertyOverflow: |
| case CSSPropertyQuotes: |
| case CSSPropertyWebkitHighlight: |
| case CSSPropertyFontVariantLigatures: |
| case CSSPropertyFontFeatureSettings: |
| case CSSPropertyFontVariant: |
| case CSSPropertyFontFamily: |
| case CSSPropertyFontWeight: |
| case CSSPropertyLetterSpacing: |
| case CSSPropertyWordSpacing: |
| case CSSPropertyTabSize: |
| case CSSPropertyFontSize: |
| case CSSPropertyLineHeight: |
| case CSSPropertyRotate: |
| case CSSPropertyFont: |
| case CSSPropertyWebkitBorderHorizontalSpacing: |
| case CSSPropertyWebkitBorderVerticalSpacing: |
| case CSSPropertyBorderSpacing: |
| case CSSPropertyCounterIncrement: |
| case CSSPropertyCounterReset: |
| case CSSPropertySize: |
| case CSSPropertyTextIndent: |
| case CSSPropertyMaxWidth: |
| case CSSPropertyMaxHeight: |
| case CSSPropertyWebkitMaxLogicalWidth: |
| case CSSPropertyWebkitMaxLogicalHeight: |
| case CSSPropertyMinWidth: |
| case CSSPropertyMinHeight: |
| case CSSPropertyWidth: |
| case CSSPropertyHeight: |
| case CSSPropertyWebkitMinLogicalWidth: |
| case CSSPropertyWebkitMinLogicalHeight: |
| case CSSPropertyWebkitLogicalWidth: |
| case CSSPropertyWebkitLogicalHeight: |
| case CSSPropertyClip: |
| case CSSPropertyTouchAction: |
| case CSSPropertyWebkitLineClamp: |
| case CSSPropertyWebkitFontSizeDelta: |
| case CSSPropertyWebkitHyphenateCharacter: |
| case CSSPropertyWebkitLocale: |
| case CSSPropertyWebkitColumnWidth: |
| case CSSPropertyWebkitColumnCount: |
| case CSSPropertyWebkitColumns: |
| case CSSPropertyWebkitColumnGap: |
| case CSSPropertyWebkitColumnSpan: |
| case CSSPropertyZoom: |
| case CSSPropertyAnimation: |
| case CSSPropertyTransition: |
| case CSSPropertyAnimationDelay: |
| case CSSPropertyTransitionDelay: |
| case CSSPropertyAnimationDirection: |
| case CSSPropertyAnimationDuration: |
| case CSSPropertyTransitionDuration: |
| case CSSPropertyAnimationFillMode: |
| case CSSPropertyAnimationIterationCount: |
| case CSSPropertyAnimationName: |
| case CSSPropertyAnimationPlayState: |
| case CSSPropertyAnimationTimingFunction: |
| case CSSPropertyTransitionTimingFunction: |
| case CSSPropertyTransitionProperty: |
| case CSSPropertyOrphans: |
| case CSSPropertyWidows: |
| case CSSPropertyWebkitTapHighlightColor: |
| case CSSPropertyWebkitTextFillColor: |
| case CSSPropertyColor: |
| case CSSPropertyZIndex: |
| case CSSPropertyTextShadow: |
| case CSSPropertyBoxShadow: |
| case CSSPropertyWebkitFilter: |
| case CSSPropertyBackdropFilter: |
| case CSSPropertyTextDecorationColor: |
| case CSSPropertyWebkitTextDecorationsInEffect: |
| case CSSPropertyTextDecorationLine: |
| case CSSPropertyTextDecoration: |
| case CSSPropertyMotionPath: |
| case CSSPropertyMotionOffset: |
| case CSSPropertyMotionRotation: |
| case CSSPropertyMotion: |
| case CSSPropertyWebkitTextEmphasisColor: |
| case CSSPropertyWebkitTextEmphasisStyle: |
| case CSSPropertyWebkitTextEmphasis: |
| case CSSPropertyOutline: |
| case CSSPropertyOutlineColor: |
| case CSSPropertyOutlineWidth: |
| case CSSPropertyOutlineOffset: |
| case CSSPropertyWebkitBorderStartColor: |
| case CSSPropertyWebkitBorderEndColor: |
| case CSSPropertyWebkitBorderBeforeColor: |
| case CSSPropertyWebkitBorderAfterColor: |
| case CSSPropertyWebkitBorderStartWidth: |
| case CSSPropertyWebkitBorderEndWidth: |
| case CSSPropertyWebkitBorderBeforeWidth: |
| case CSSPropertyWebkitBorderAfterWidth: |
| case CSSPropertyWebkitBorderStart: |
| case CSSPropertyWebkitBorderEnd: |
| case CSSPropertyWebkitBorderBefore: |
| case CSSPropertyWebkitBorderAfter: |
| case CSSPropertyWebkitTextStroke: |
| case CSSPropertyWebkitTextStrokeColor: |
| case CSSPropertyWebkitTextStrokeWidth: |
| case CSSPropertyTransform: |
| case CSSPropertyFill: |
| case CSSPropertyStroke: |
| case CSSPropertyStopColor: |
| case CSSPropertyFloodColor: |
| case CSSPropertyLightingColor: |
| case CSSPropertyPaintOrder: |
| case CSSPropertyMarker: |
| case CSSPropertyMarkerStart: |
| case CSSPropertyMarkerMid: |
| case CSSPropertyMarkerEnd: |
| validPrimitive = false; |
| break; |
| |
| case CSSPropertyScrollSnapPointsX: |
| case CSSPropertyScrollSnapPointsY: |
| parsedValue = parseScrollSnapPoints(); |
| break; |
| case CSSPropertyScrollSnapCoordinate: |
| parsedValue = parseScrollSnapCoordinate(); |
| break; |
| case CSSPropertyScrollSnapDestination: |
| parsedValue = parsePosition(m_valueList); |
| break; |
| |
| default: |
| return parseSVGValue(propId, important); |
| } |
| |
| if (validPrimitive) { |
| parsedValue = parseValidPrimitive(id, value); |
| m_valueList->next(); |
| } |
| ASSERT(!m_parsedCalculation); |
| if (parsedValue) { |
| if (!m_valueList->current() || inShorthand()) { |
| addProperty(propId, parsedValue.release(), important); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void CSSPropertyParser::addFillValue(RefPtrWillBeRawPtr<CSSValue>& lval, PassRefPtrWillBeRawPtr<CSSValue> rval) |
| { |
| if (lval) { |
| if (lval->isBaseValueList()) |
| toCSSValueList(lval.get())->append(rval); |
| else { |
| PassRefPtrWillBeRawPtr<CSSValue> oldlVal(lval.release()); |
| PassRefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated(); |
| list->append(oldlVal); |
| list->append(rval); |
| lval = list; |
| } |
| } |
| else |
| lval = rval; |
| } |
| |
| static bool parseBackgroundClip(CSSParserValue* parserValue, RefPtrWillBeRawPtr<CSSValue>& cssValue) |
| { |
| if (parserValue->id == CSSValueBorderBox || parserValue->id == CSSValuePaddingBox |
| || parserValue->id == CSSValueContentBox || parserValue->id == CSSValueWebkitText) { |
| cssValue = cssValuePool().createIdentifierValue(parserValue->id); |
| return true; |
| } |
| return false; |
| } |
| |
| const int cMaxFillProperties = 9; |
| |
| bool CSSPropertyParser::parseFillShorthand(CSSPropertyID propId, const CSSPropertyID* properties, int numProperties, bool important) |
| { |
| ASSERT(numProperties <= cMaxFillProperties); |
| if (numProperties > cMaxFillProperties) |
| return false; |
| |
| ShorthandScope scope(this, propId); |
| |
| bool parsedProperty[cMaxFillProperties] = { false }; |
| RefPtrWillBeRawPtr<CSSValue> values[cMaxFillProperties]; |
| #if ENABLE(OILPAN) |
| // Zero initialize the array of raw pointers. |
| memset(&values, 0, sizeof(values)); |
| #endif |
| RefPtrWillBeRawPtr<CSSValue> clipValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> positionYValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> repeatYValue = nullptr; |
| bool foundClip = false; |
| int i; |
| bool foundPositionCSSProperty = false; |
| |
| while (m_valueList->current()) { |
| CSSParserValue* val = m_valueList->current(); |
| if (isComma(val)) { |
| // We hit the end. Fill in all remaining values with the initial value. |
| m_valueList->next(); |
| for (i = 0; i < numProperties; ++i) { |
| if (properties[i] == CSSPropertyBackgroundColor && parsedProperty[i]) |
| // Color is not allowed except as the last item in a list for backgrounds. |
| // Reject the entire property. |
| return false; |
| |
| if (!parsedProperty[i] && properties[i] != CSSPropertyBackgroundColor) { |
| addFillValue(values[i], cssValuePool().createImplicitInitialValue()); |
| if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition) |
| addFillValue(positionYValue, cssValuePool().createImplicitInitialValue()); |
| if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat) |
| addFillValue(repeatYValue, cssValuePool().createImplicitInitialValue()); |
| if ((properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) { |
| // If background-origin wasn't present, then reset background-clip also. |
| addFillValue(clipValue, cssValuePool().createImplicitInitialValue()); |
| } |
| } |
| parsedProperty[i] = false; |
| } |
| if (!m_valueList->current()) |
| break; |
| } |
| |
| bool sizeCSSPropertyExpected = false; |
| if (isForwardSlashOperator(val) && foundPositionCSSProperty) { |
| sizeCSSPropertyExpected = true; |
| m_valueList->next(); |
| } |
| |
| foundPositionCSSProperty = false; |
| bool found = false; |
| for (i = 0; !found && i < numProperties; ++i) { |
| |
| if (sizeCSSPropertyExpected && (properties[i] != CSSPropertyBackgroundSize && properties[i] != CSSPropertyWebkitMaskSize)) |
| continue; |
| if (!sizeCSSPropertyExpected && (properties[i] == CSSPropertyBackgroundSize || properties[i] == CSSPropertyWebkitMaskSize)) |
| continue; |
| |
| if (!parsedProperty[i]) { |
| RefPtrWillBeRawPtr<CSSValue> val1 = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> val2 = nullptr; |
| CSSPropertyID propId1, propId2; |
| CSSParserValue* parserValue = m_valueList->current(); |
| // parseFillProperty() may modify m_implicitShorthand, so we MUST reset it |
| // before EACH return below. |
| if (parserValue && parseFillProperty(properties[i], propId1, propId2, val1, val2)) { |
| parsedProperty[i] = found = true; |
| addFillValue(values[i], val1.release()); |
| if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition) |
| addFillValue(positionYValue, val2.release()); |
| if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat) |
| addFillValue(repeatYValue, val2.release()); |
| if (properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) { |
| // Reparse the value as a clip, and see if we succeed. |
| if (parseBackgroundClip(parserValue, val1)) |
| addFillValue(clipValue, val1.release()); // The property parsed successfully. |
| else |
| addFillValue(clipValue, cssValuePool().createImplicitInitialValue()); // Some value was used for origin that is not supported by clip. Just reset clip instead. |
| } |
| if (properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) { |
| // Update clipValue |
| addFillValue(clipValue, val1.release()); |
| foundClip = true; |
| } |
| if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition) |
| foundPositionCSSProperty = true; |
| } |
| } |
| } |
| |
| // if we didn't find at least one match, this is an |
| // invalid shorthand and we have to ignore it |
| if (!found) { |
| m_implicitShorthand = false; |
| return false; |
| } |
| } |
| |
| // Now add all of the properties we found. |
| for (i = 0; i < numProperties; i++) { |
| // Fill in any remaining properties with the initial value. |
| if (!parsedProperty[i]) { |
| addFillValue(values[i], cssValuePool().createImplicitInitialValue()); |
| if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition) |
| addFillValue(positionYValue, cssValuePool().createImplicitInitialValue()); |
| if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat) |
| addFillValue(repeatYValue, cssValuePool().createImplicitInitialValue()); |
| if (properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) { |
| // If background-origin wasn't present, then reset background-clip also. |
| addFillValue(clipValue, cssValuePool().createImplicitInitialValue()); |
| } |
| } |
| if (properties[i] == CSSPropertyBackgroundPosition) { |
| addProperty(CSSPropertyBackgroundPositionX, values[i].release(), important); |
| // it's OK to call positionYValue.release() since we only see CSSPropertyBackgroundPosition once |
| addProperty(CSSPropertyBackgroundPositionY, positionYValue.release(), important); |
| } else if (properties[i] == CSSPropertyWebkitMaskPosition) { |
| addProperty(CSSPropertyWebkitMaskPositionX, values[i].release(), important); |
| // it's OK to call positionYValue.release() since we only see CSSPropertyWebkitMaskPosition once |
| addProperty(CSSPropertyWebkitMaskPositionY, positionYValue.release(), important); |
| } else if (properties[i] == CSSPropertyBackgroundRepeat) { |
| addProperty(CSSPropertyBackgroundRepeatX, values[i].release(), important); |
| // it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once |
| addProperty(CSSPropertyBackgroundRepeatY, repeatYValue.release(), important); |
| } else if (properties[i] == CSSPropertyWebkitMaskRepeat) { |
| addProperty(CSSPropertyWebkitMaskRepeatX, values[i].release(), important); |
| // it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once |
| addProperty(CSSPropertyWebkitMaskRepeatY, repeatYValue.release(), important); |
| } else if ((properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) && !foundClip) |
| // Value is already set while updating origin |
| continue; |
| else if (properties[i] == CSSPropertyBackgroundSize && !parsedProperty[i] && m_context.useLegacyBackgroundSizeShorthandBehavior()) |
| continue; |
| else |
| addProperty(properties[i], values[i].release(), important); |
| |
| // Add in clip values when we hit the corresponding origin property. |
| if (properties[i] == CSSPropertyBackgroundOrigin && !foundClip) |
| addProperty(CSSPropertyBackgroundClip, clipValue.release(), important); |
| else if (properties[i] == CSSPropertyWebkitMaskOrigin && !foundClip) |
| addProperty(CSSPropertyWebkitMaskClip, clipValue.release(), important); |
| } |
| |
| m_implicitShorthand = false; |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseShorthand(CSSPropertyID propId, const StylePropertyShorthand& shorthand, bool important) |
| { |
| // We try to match as many properties as possible |
| // We set up an array of booleans to mark which property has been found, |
| // and we try to search for properties until it makes no longer any sense. |
| ShorthandScope scope(this, propId); |
| |
| bool found = false; |
| unsigned propertiesParsed = 0; |
| bool propertyFound[6] = { false, false, false, false, false, false }; // 6 is enough size. |
| |
| while (m_valueList->current()) { |
| found = false; |
| for (unsigned propIndex = 0; !found && propIndex < shorthand.length(); ++propIndex) { |
| if (!propertyFound[propIndex] && parseValue(shorthand.properties()[propIndex], important)) { |
| propertyFound[propIndex] = found = true; |
| propertiesParsed++; |
| } |
| } |
| |
| // if we didn't find at least one match, this is an |
| // invalid shorthand and we have to ignore it |
| if (!found) |
| return false; |
| } |
| |
| if (propertiesParsed == shorthand.length()) |
| return true; |
| |
| // Fill in any remaining properties with the initial value. |
| ImplicitScope implicitScope(this); |
| const StylePropertyShorthand* const* const propertiesForInitialization = shorthand.propertiesForInitialization(); |
| for (unsigned i = 0; i < shorthand.length(); ++i) { |
| if (propertyFound[i]) |
| continue; |
| |
| if (propertiesForInitialization) { |
| const StylePropertyShorthand& initProperties = *(propertiesForInitialization[i]); |
| for (unsigned propIndex = 0; propIndex < initProperties.length(); ++propIndex) |
| addProperty(initProperties.properties()[propIndex], cssValuePool().createImplicitInitialValue(), important); |
| } else |
| addProperty(shorthand.properties()[i], cssValuePool().createImplicitInitialValue(), important); |
| } |
| |
| return true; |
| } |
| |
| bool CSSPropertyParser::parse4Values(CSSPropertyID propId, const CSSPropertyID *properties, bool important) |
| { |
| /* From the CSS 2 specs, 8.3 |
| * If there is only one value, it applies to all sides. If there are two values, the top and |
| * bottom margins are set to the first value and the right and left margins are set to the second. |
| * If there are three values, the top is set to the first value, the left and right are set to the |
| * second, and the bottom is set to the third. If there are four values, they apply to the top, |
| * right, bottom, and left, respectively. |
| */ |
| |
| int num = inShorthand() ? 1 : m_valueList->size(); |
| |
| ShorthandScope scope(this, propId); |
| |
| // the order is top, right, bottom, left |
| switch (num) { |
| case 1: { |
| if (!parseValue(properties[0], important)) |
| return false; |
| CSSValue* value = m_parsedProperties.last().value(); |
| ImplicitScope implicitScope(this); |
| addProperty(properties[1], value, important); |
| addProperty(properties[2], value, important); |
| addProperty(properties[3], value, important); |
| break; |
| } |
| case 2: { |
| if (!parseValue(properties[0], important) || !parseValue(properties[1], important)) |
| return false; |
| CSSValue* value = m_parsedProperties[m_parsedProperties.size() - 2].value(); |
| ImplicitScope implicitScope(this); |
| addProperty(properties[2], value, important); |
| value = m_parsedProperties[m_parsedProperties.size() - 2].value(); |
| addProperty(properties[3], value, important); |
| break; |
| } |
| case 3: { |
| if (!parseValue(properties[0], important) || !parseValue(properties[1], important) || !parseValue(properties[2], important)) |
| return false; |
| CSSValue* value = m_parsedProperties[m_parsedProperties.size() - 2].value(); |
| ImplicitScope implicitScope(this); |
| addProperty(properties[3], value, important); |
| break; |
| } |
| case 4: { |
| if (!parseValue(properties[0], important) || !parseValue(properties[1], important) || |
| !parseValue(properties[2], important) || !parseValue(properties[3], important)) |
| return false; |
| break; |
| } |
| default: { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseScrollSnapPoints() |
| { |
| CSSParserValue* value = m_valueList->current(); |
| |
| if (value->id == CSSValueNone) { |
| m_valueList->next(); |
| return cssValuePool().createIdentifierValue(CSSValueNone); |
| } |
| |
| if (value->m_unit == CSSParserValue::Function && value->function->id == CSSValueRepeat) { |
| // The spec defines the following grammar: repeat( <length>) |
| CSSParserValueList* arguments = value->function->args.get(); |
| if (!arguments || arguments->size() != 1) |
| return nullptr; |
| |
| CSSParserValue* repeatValue = arguments->valueAt(0); |
| if (validUnit(repeatValue, FNonNeg | FLength | FPercent) && (m_parsedCalculation || repeatValue->fValue > 0)) { |
| RefPtrWillBeRawPtr<CSSFunctionValue> result = CSSFunctionValue::create(CSSValueRepeat); |
| result->append(parseValidPrimitive(repeatValue->id, repeatValue)); |
| m_valueList->next(); |
| return result.release(); |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseScrollSnapCoordinate() |
| { |
| if (m_valueList->current()->id == CSSValueNone) { |
| m_valueList->next(); |
| return cssValuePool().createIdentifierValue(CSSValueNone); |
| } |
| |
| return parsePositionList(m_valueList); |
| } |
| |
| // [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit |
| // in CSS 2.1 this got somewhat reduced: |
| // [ <string> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit |
| PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseContent() |
| { |
| RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated(); |
| |
| while (CSSParserValue* val = m_valueList->current()) { |
| RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr; |
| if (val->m_unit == CSSParserValue::URI) { |
| // url |
| parsedValue = createCSSImageValueWithReferrer(val->string, completeURL(val->string)); |
| } else if (val->m_unit == CSSParserValue::Function) { |
| // attr(X) | counter(X [,Y]) | counters(X, Y, [,Z]) | -webkit-gradient(...) |
| CSSParserValueList* args = val->function->args.get(); |
| if (!args) |
| return nullptr; |
| if (val->function->id == CSSValueAttr) { |
| parsedValue = parseAttr(args); |
| } else if (val->function->id == CSSValueCounter) { |
| parsedValue = parseCounterContent(args, false); |
| } else if (val->function->id == CSSValueCounters) { |
| parsedValue = parseCounterContent(args, true); |
| } else if (val->function->id == CSSValueWebkitImageSet) { |
| parsedValue = parseImageSet(m_valueList); |
| } else if (isGeneratedImageValue(val)) { |
| if (!parseGeneratedImage(m_valueList, parsedValue)) |
| return nullptr; |
| } |
| } else if (val->m_unit == CSSParserValue::Identifier) { |
| switch (val->id) { |
| case CSSValueOpenQuote: |
| case CSSValueCloseQuote: |
| case CSSValueNoOpenQuote: |
| case CSSValueNoCloseQuote: |
| case CSSValueNone: |
| case CSSValueNormal: |
| parsedValue = cssValuePool().createIdentifierValue(val->id); |
| default: |
| break; |
| } |
| } else if (val->m_unit == CSSParserValue::String) { |
| parsedValue = createPrimitiveStringValue(val); |
| } |
| if (!parsedValue) |
| return nullptr; |
| values->append(parsedValue.release()); |
| m_valueList->next(); |
| } |
| |
| return values.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAttr(CSSParserValueList* args) |
| { |
| if (args->size() != 1) |
| return nullptr; |
| |
| CSSParserValue* a = args->current(); |
| |
| if (a->m_unit != CSSParserValue::Identifier) |
| return nullptr; |
| |
| String attrName = a->string; |
| // CSS allows identifiers with "-" at the start, like "-webkit-mask-image". |
| // But HTML attribute names can't have those characters, and we should not |
| // even parse them inside attr(). |
| if (attrName[0] == '-') |
| return nullptr; |
| |
| if (m_context.isHTMLDocument()) |
| attrName = attrName.lower(); |
| |
| RefPtrWillBeRawPtr<CSSFunctionValue> attrValue = CSSFunctionValue::create(CSSValueAttr); |
| attrValue->append(CSSCustomIdentValue::create(attrName)); |
| return attrValue.release(); |
| } |
| |
| bool CSSPropertyParser::acceptQuirkyColors(CSSPropertyID propertyId) const |
| { |
| if (!inQuirksMode()) |
| return false; |
| switch (propertyId) { |
| case CSSPropertyBackgroundColor: |
| case CSSPropertyBorderBottomColor: |
| case CSSPropertyBorderLeftColor: |
| case CSSPropertyBorderRightColor: |
| case CSSPropertyBorderTopColor: |
| return !inShorthand() || m_currentShorthand == CSSPropertyBorderColor; |
| case CSSPropertyColor: |
| return true; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| bool CSSPropertyParser::isColorKeyword(CSSValueID id) |
| { |
| // Named colors and color keywords: |
| // |
| // <named-color> |
| // 'aqua', 'black', 'blue', ..., 'yellow' (CSS3: "basic color keywords") |
| // 'aliceblue', ..., 'yellowgreen' (CSS3: "extended color keywords") |
| // 'transparent' |
| // |
| // 'currentcolor' |
| // |
| // <deprecated-system-color> |
| // 'ActiveBorder', ..., 'WindowText' |
| // |
| // WebKit proprietary/internal: |
| // '-webkit-link' |
| // '-webkit-activelink' |
| // '-internal-active-list-box-selection' |
| // '-internal-active-list-box-selection-text' |
| // '-internal-inactive-list-box-selection' |
| // '-internal-inactive-list-box-selection-text' |
| // '-webkit-focus-ring-color' |
| // '-webkit-text' |
| // |
| return (id >= CSSValueAqua && id <= CSSValueWebkitText) |
| || (id >= CSSValueAliceblue && id <= CSSValueYellowgreen) |
| || id == CSSValueMenu; |
| } |
| |
| bool CSSPropertyParser::isValidNumericValue(double value) |
| { |
| return std::isfinite(value) |
| && value >= -std::numeric_limits<float>::max() |
| && value <= std::numeric_limits<float>::max(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseColor(const CSSParserValue* value, bool acceptQuirkyColors) |
| { |
| CSSValueID id = value->id; |
| if (isColorKeyword(id)) { |
| if (!isValueAllowedInMode(id, m_context.mode())) |
| return nullptr; |
| if (id == CSSValueWebkitText && m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::WebkitTextInColorProperty); |
| return cssValuePool().createIdentifierValue(id); |
| } |
| RGBA32 c = Color::transparent; |
| if (!parseColorFromValue(value, c, acceptQuirkyColors)) |
| return nullptr; |
| return cssValuePool().createColorValue(c); |
| } |
| |
| bool CSSPropertyParser::parseFillImage(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value) |
| { |
| if (valueList->current()->id == CSSValueNone) { |
| value = cssValuePool().createIdentifierValue(CSSValueNone); |
| return true; |
| } |
| if (valueList->current()->m_unit == CSSParserValue::URI) { |
| value = createCSSImageValueWithReferrer(valueList->current()->string, completeURL(valueList->current()->string)); |
| return true; |
| } |
| |
| if (isGeneratedImageValue(valueList->current())) |
| return parseGeneratedImage(valueList, value); |
| |
| if (valueList->current()->m_unit == CSSParserValue::Function && valueList->current()->function->id == CSSValueWebkitImageSet) { |
| value = parseImageSet(m_valueList); |
| if (value) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseFillPositionX(CSSParserValueList* valueList) |
| { |
| int id = valueList->current()->id; |
| if (id == CSSValueLeft || id == CSSValueRight || id == CSSValueCenter) { |
| int percent = 0; |
| if (id == CSSValueRight) |
| percent = 100; |
| else if (id == CSSValueCenter) |
| percent = 50; |
| return cssValuePool().createValue(percent, CSSPrimitiveValue::UnitType::Percentage); |
| } |
| if (validUnit(valueList->current(), FPercent | FLength)) |
| return createPrimitiveNumericValue(valueList->current()); |
| return nullptr; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseFillPositionY(CSSParserValueList* valueList) |
| { |
| int id = valueList->current()->id; |
| if (id == CSSValueTop || id == CSSValueBottom || id == CSSValueCenter) { |
| int percent = 0; |
| if (id == CSSValueBottom) |
| percent = 100; |
| else if (id == CSSValueCenter) |
| percent = 50; |
| return cssValuePool().createValue(percent, CSSPrimitiveValue::UnitType::Percentage); |
| } |
| if (validUnit(valueList->current(), FPercent | FLength)) |
| return createPrimitiveNumericValue(valueList->current()); |
| return nullptr; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseFillPositionComponent(CSSParserValueList* valueList, unsigned& cumulativeFlags, FillPositionFlag& individualFlag, FillPositionParsingMode parsingMode, Units unitless) |
| { |
| CSSValueID id = valueList->current()->id; |
| if (id == CSSValueLeft || id == CSSValueTop || id == CSSValueRight || id == CSSValueBottom || id == CSSValueCenter) { |
| int percent = 0; |
| if (id == CSSValueLeft || id == CSSValueRight) { |
| if (cumulativeFlags & XFillPosition) |
| return nullptr; |
| cumulativeFlags |= XFillPosition; |
| individualFlag = XFillPosition; |
| if (id == CSSValueRight) |
| percent = 100; |
| } |
| else if (id == CSSValueTop || id == CSSValueBottom) { |
| if (cumulativeFlags & YFillPosition) |
| return nullptr; |
| cumulativeFlags |= YFillPosition; |
| individualFlag = YFillPosition; |
| if (id == CSSValueBottom) |
| percent = 100; |
| } else if (id == CSSValueCenter) { |
| // Center is ambiguous, so we're not sure which position we've found yet, an x or a y. |
| percent = 50; |
| cumulativeFlags |= AmbiguousFillPosition; |
| individualFlag = AmbiguousFillPosition; |
| } |
| |
| if (parsingMode == ResolveValuesAsKeyword) |
| return cssValuePool().createIdentifierValue(id); |
| |
| return cssValuePool().createValue(percent, CSSPrimitiveValue::UnitType::Percentage); |
| } |
| if (validUnit(valueList->current(), FPercent | FLength | unitless)) { |
| if (!cumulativeFlags) { |
| cumulativeFlags |= XFillPosition; |
| individualFlag = XFillPosition; |
| } else if (cumulativeFlags & (XFillPosition | AmbiguousFillPosition)) { |
| cumulativeFlags |= YFillPosition; |
| individualFlag = YFillPosition; |
| } else { |
| if (m_parsedCalculation) |
| m_parsedCalculation.release(); |
| return nullptr; |
| } |
| return createPrimitiveNumericValue(valueList->current()); |
| } |
| return nullptr; |
| } |
| |
| static bool isValueConflictingWithCurrentEdge(int value1, int value2) |
| { |
| if ((value1 == CSSValueLeft || value1 == CSSValueRight) && (value2 == CSSValueLeft || value2 == CSSValueRight)) |
| return true; |
| |
| if ((value1 == CSSValueTop || value1 == CSSValueBottom) && (value2 == CSSValueTop || value2 == CSSValueBottom)) |
| return true; |
| |
| return false; |
| } |
| |
| static bool isFillPositionKeyword(CSSValueID value) |
| { |
| return value == CSSValueLeft || value == CSSValueTop || value == CSSValueBottom || value == CSSValueRight || value == CSSValueCenter; |
| } |
| |
| void CSSPropertyParser::parse4ValuesFillPosition(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value1, RefPtrWillBeRawPtr<CSSValue>& value2, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2) |
| { |
| // [ left | right ] [ <percentage] | <length> ] && [ top | bottom ] [ <percentage> | <length> ] |
| // In the case of 4 values <position> requires the second value to be a length or a percentage. |
| if (isFillPositionKeyword(parsedValue2->getValueID())) |
| return; |
| |
| unsigned cumulativeFlags = 0; |
| FillPositionFlag value3Flag = InvalidFillPosition; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> value3 = parseFillPositionComponent(valueList, cumulativeFlags, value3Flag, ResolveValuesAsKeyword); |
| if (!value3) |
| return; |
| |
| CSSValueID ident1 = parsedValue1->getValueID(); |
| CSSValueID ident3 = value3->getValueID(); |
| |
| if (ident1 == CSSValueCenter) |
| return; |
| |
| if (!isFillPositionKeyword(ident3) || ident3 == CSSValueCenter) |
| return; |
| |
| // We need to check if the values are not conflicting, e.g. they are not on the same edge. It is |
| // needed as the second call to parseFillPositionComponent was on purpose not checking it. In the |
| // case of two values top 20px is invalid but in the case of 4 values it becomes valid. |
| if (isValueConflictingWithCurrentEdge(ident1, ident3)) |
| return; |
| |
| valueList->next(); |
| |
| cumulativeFlags = 0; |
| FillPositionFlag value4Flag = InvalidFillPosition; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> value4 = parseFillPositionComponent(valueList, cumulativeFlags, value4Flag, ResolveValuesAsKeyword); |
| if (!value4) |
| return; |
| |
| // 4th value must be a length or a percentage. |
| if (isFillPositionKeyword(value4->getValueID())) |
| return; |
| |
| value1 = CSSValuePair::create(parsedValue1, parsedValue2, CSSValuePair::DropIdenticalValues); |
| value2 = CSSValuePair::create(value3, value4, CSSValuePair::DropIdenticalValues); |
| |
| if (ident1 == CSSValueTop || ident1 == CSSValueBottom) |
| value1.swap(value2); |
| |
| valueList->next(); |
| } |
| void CSSPropertyParser::parse3ValuesFillPosition(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value1, RefPtrWillBeRawPtr<CSSValue>& value2, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2) |
| { |
| unsigned cumulativeFlags = 0; |
| FillPositionFlag value3Flag = InvalidFillPosition; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> value3 = parseFillPositionComponent(valueList, cumulativeFlags, value3Flag, ResolveValuesAsKeyword); |
| |
| // value3 is not an expected value, we return. |
| if (!value3) |
| return; |
| |
| valueList->next(); |
| |
| bool swapNeeded = false; |
| CSSValueID ident1 = parsedValue1->getValueID(); |
| CSSValueID ident2 = parsedValue2->getValueID(); |
| CSSValueID ident3 = value3->getValueID(); |
| |
| CSSValueID firstPositionKeyword; |
| CSSValueID secondPositionKeyword; |
| |
| if (ident1 == CSSValueCenter) { |
| // <position> requires the first 'center' to be followed by a keyword. |
| if (!isFillPositionKeyword(ident2)) |
| return; |
| |
| // If 'center' is the first keyword then the last one needs to be a length. |
| if (isFillPositionKeyword(ident3)) |
| return; |
| |
| firstPositionKeyword = CSSValueLeft; |
| if (ident2 == CSSValueLeft || ident2 == CSSValueRight) { |
| firstPositionKeyword = CSSValueTop; |
| swapNeeded = true; |
| } |
| value1 = CSSValuePair::create(cssValuePool().createIdentifierValue(firstPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage), CSSValuePair::DropIdenticalValues); |
| value2 = CSSValuePair::create(parsedValue2, value3, CSSValuePair::DropIdenticalValues); |
| } else if (ident3 == CSSValueCenter) { |
| if (isFillPositionKeyword(ident2)) |
| return; |
| |
| secondPositionKeyword = CSSValueTop; |
| if (ident1 == CSSValueTop || ident1 == CSSValueBottom) { |
| secondPositionKeyword = CSSValueLeft; |
| swapNeeded = true; |
| } |
| value1 = CSSValuePair::create(parsedValue1, parsedValue2, CSSValuePair::DropIdenticalValues); |
| value2 = CSSValuePair::create(cssValuePool().createIdentifierValue(secondPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage), CSSValuePair::DropIdenticalValues); |
| } else { |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> firstPositionValue = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> secondPositionValue = nullptr; |
| |
| if (isFillPositionKeyword(ident2)) { |
| // To match CSS grammar, we should only accept: [ center | left | right | bottom | top ] [ left | right | top | bottom ] [ <percentage> | <length> ]. |
| ASSERT(ident2 != CSSValueCenter); |
| |
| if (isFillPositionKeyword(ident3)) |
| return; |
| |
| secondPositionValue = value3; |
| secondPositionKeyword = ident2; |
| firstPositionValue = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Percentage); |
| } else { |
| // Per CSS, we should only accept: [ right | left | top | bottom ] [ <percentage> | <length> ] [ center | left | right | bottom | top ]. |
| if (!isFillPositionKeyword(ident3)) |
| return; |
| |
| firstPositionValue = parsedValue2; |
| secondPositionKeyword = ident3; |
| secondPositionValue = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Percentage); |
| } |
| |
| if (isValueConflictingWithCurrentEdge(ident1, secondPositionKeyword)) |
| return; |
| |
| value1 = CSSValuePair::create(parsedValue1, firstPositionValue, CSSValuePair::DropIdenticalValues); |
| value2 = CSSValuePair::create(cssValuePool().createIdentifierValue(secondPositionKeyword), secondPositionValue, CSSValuePair::DropIdenticalValues); |
| } |
| |
| if (ident1 == CSSValueTop || ident1 == CSSValueBottom || swapNeeded) |
| value1.swap(value2); |
| |
| #if ENABLE(ASSERT) |
| const CSSValuePair& first = toCSSValuePair(*value1); |
| const CSSValuePair& second = toCSSValuePair(*value2); |
| ident1 = toCSSPrimitiveValue(first.first()).getValueID(); |
| ident2 = toCSSPrimitiveValue(second.first()).getValueID(); |
| ASSERT(ident1 == CSSValueLeft || ident1 == CSSValueRight); |
| ASSERT(ident2 == CSSValueBottom || ident2 == CSSValueTop); |
| #endif |
| } |
| |
| inline bool CSSPropertyParser::isPotentialPositionValue(CSSParserValue* value) |
| { |
| return isFillPositionKeyword(value->id) || validUnit(value, FPercent | FLength, ReleaseParsedCalcValue); |
| } |
| |
| void CSSPropertyParser::parseFillPosition(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value1, RefPtrWillBeRawPtr<CSSValue>& value2, Units unitless) |
| { |
| unsigned numberOfValues = 0; |
| for (unsigned i = valueList->currentIndex(); i < valueList->size(); ++i, ++numberOfValues) { |
| CSSParserValue* current = valueList->valueAt(i); |
| if (!current || isComma(current) || isForwardSlashOperator(current) || !isPotentialPositionValue(current)) |
| break; |
| } |
| |
| if (numberOfValues > 4) |
| return; |
| |
| // If we are parsing two values, we can safely call the CSS 2.1 parsing function and return. |
| if (numberOfValues <= 2) { |
| parse2ValuesFillPosition(valueList, value1, value2, unitless); |
| return; |
| } |
| |
| ASSERT(numberOfValues > 2 && numberOfValues <= 4); |
| |
| CSSParserValue* value = valueList->current(); |
| |
| // <position> requires the first value to be a background keyword. |
| if (!isFillPositionKeyword(value->id)) |
| return; |
| |
| // Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length. |
| unsigned cumulativeFlags = 0; |
| FillPositionFlag value1Flag = InvalidFillPosition; |
| FillPositionFlag value2Flag = InvalidFillPosition; |
| value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag, ResolveValuesAsKeyword); |
| if (!value1) |
| return; |
| |
| valueList->next(); |
| |
| // In case we are parsing more than two values, relax the check inside of parseFillPositionComponent. top 20px is |
| // a valid start for <position>. |
| cumulativeFlags = AmbiguousFillPosition; |
| value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag, ResolveValuesAsKeyword); |
| if (value2) |
| valueList->next(); |
| else { |
| value1.clear(); |
| return; |
| } |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1 = toCSSPrimitiveValue(value1.get()); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2 = toCSSPrimitiveValue(value2.get()); |
| |
| value1.clear(); |
| value2.clear(); |
| |
| // Per CSS3 syntax, <position> can't have 'center' as its second keyword as we have more arguments to follow. |
| if (parsedValue2->getValueID() == CSSValueCenter) |
| return; |
| |
| if (numberOfValues == 3) |
| parse3ValuesFillPosition(valueList, value1, value2, parsedValue1.release(), parsedValue2.release()); |
| else |
| parse4ValuesFillPosition(valueList, value1, value2, parsedValue1.release(), parsedValue2.release()); |
| } |
| |
| void CSSPropertyParser::parse2ValuesFillPosition(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value1, RefPtrWillBeRawPtr<CSSValue>& value2, Units unitless) |
| { |
| // Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length. |
| unsigned cumulativeFlags = 0; |
| FillPositionFlag value1Flag = InvalidFillPosition; |
| FillPositionFlag value2Flag = InvalidFillPosition; |
| value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag, ResolveValuesAsPercent, unitless); |
| if (!value1) |
| return; |
| |
| // It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we |
| // can assume that any other values belong to the rest of the shorthand). If we're not parsing a shorthand, though, the |
| // value was explicitly specified for our property. |
| CSSParserValue* value = valueList->next(); |
| |
| // First check for the comma. If so, we are finished parsing this value or value pair. |
| if (value && isComma(value)) |
| value = 0; |
| |
| if (value) { |
| value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag, ResolveValuesAsPercent, unitless); |
| if (value2) |
| valueList->next(); |
| else { |
| if (!inShorthand()) { |
| value1.clear(); |
| return; |
| } |
| } |
| } |
| |
| if (!value2) { |
| // Only one value was specified. If that value was not a keyword, then it sets the x position, and the y position |
| // is simply 50%. This is our default. |
| // For keywords, the keyword was either an x-keyword (left/right), a y-keyword (top/bottom), or an ambiguous keyword (center). |
| // For left/right/center, the default of 50% in the y is still correct. |
| value2 = cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage); |
| } |
| |
| if (value1Flag == YFillPosition || value2Flag == XFillPosition) |
| value1.swap(value2); |
| } |
| |
| void CSSPropertyParser::parseFillRepeat(RefPtrWillBeRawPtr<CSSValue>& value1, RefPtrWillBeRawPtr<CSSValue>& value2) |
| { |
| CSSValueID id = m_valueList->current()->id; |
| if (id == CSSValueRepeatX) { |
| m_implicitShorthand = true; |
| value1 = cssValuePool().createIdentifierValue(CSSValueRepeat); |
| value2 = cssValuePool().createIdentifierValue(CSSValueNoRepeat); |
| m_valueList->next(); |
| return; |
| } |
| if (id == CSSValueRepeatY) { |
| m_implicitShorthand = true; |
| value1 = cssValuePool().createIdentifierValue(CSSValueNoRepeat); |
| value2 = cssValuePool().createIdentifierValue(CSSValueRepeat); |
| m_valueList->next(); |
| return; |
| } |
| if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace) |
| value1 = cssValuePool().createIdentifierValue(id); |
| else { |
| value1 = nullptr; |
| return; |
| } |
| |
| CSSParserValue* value = m_valueList->next(); |
| |
| // Parse the second value if one is available |
| if (value && !isComma(value)) { |
| id = value->id; |
| if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace) { |
| value2 = cssValuePool().createIdentifierValue(id); |
| m_valueList->next(); |
| return; |
| } |
| } |
| |
| // If only one value was specified, value2 is the same as value1. |
| m_implicitShorthand = true; |
| value2 = cssValuePool().createIdentifierValue(toCSSPrimitiveValue(value1.get())->getValueID()); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseFillSize(CSSPropertyID unresolvedProperty) |
| { |
| CSSParserValue* value = m_valueList->current(); |
| m_valueList->next(); |
| |
| if (value->id == CSSValueContain || value->id == CSSValueCover) |
| return cssValuePool().createIdentifierValue(value->id); |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1 = nullptr; |
| |
| if (value->id == CSSValueAuto) |
| parsedValue1 = cssValuePool().createIdentifierValue(CSSValueAuto); |
| else { |
| if (!validUnit(value, FLength | FPercent)) |
| return nullptr; |
| parsedValue1 = createPrimitiveNumericValue(value); |
| } |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2 = nullptr; |
| value = m_valueList->current(); |
| if (value) { |
| if (value->id == CSSValueAuto) { |
| // `auto' is the default |
| m_valueList->next(); |
| } else if (validUnit(value, FLength | FPercent)) { |
| parsedValue2 = createPrimitiveNumericValue(value); |
| m_valueList->next(); |
| } |
| } else if (unresolvedProperty == CSSPropertyAliasWebkitBackgroundSize) { |
| // For backwards compatibility we set the second value to the first if it is omitted. |
| // We only need to do this for -webkit-background-size. It should be safe to let masks match |
| // the real property. |
| parsedValue2 = parsedValue1; |
| } |
| |
| if (!parsedValue2) |
| return parsedValue1; |
| |
| return CSSValuePair::create(parsedValue1.release(), parsedValue2.release(), CSSValuePair::KeepIdenticalValues); |
| } |
| |
| bool CSSPropertyParser::parseFillProperty(CSSPropertyID propId, CSSPropertyID& propId1, CSSPropertyID& propId2, |
| RefPtrWillBeRawPtr<CSSValue>& retValue1, RefPtrWillBeRawPtr<CSSValue>& retValue2) |
| { |
| // We initially store the first value in value/value2, and only create |
| // CSSValueLists if we have more values. |
| RefPtrWillBeRawPtr<CSSValueList> values = nullptr; |
| RefPtrWillBeRawPtr<CSSValueList> values2 = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> value = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> value2 = nullptr; |
| |
| retValue1 = retValue2 = nullptr; |
| propId1 = resolveCSSPropertyID(propId); |
| propId2 = propId1; |
| if (propId == CSSPropertyBackgroundPosition) { |
| propId1 = CSSPropertyBackgroundPositionX; |
| propId2 = CSSPropertyBackgroundPositionY; |
| } else if (propId == CSSPropertyWebkitMaskPosition) { |
| propId1 = CSSPropertyWebkitMaskPositionX; |
| propId2 = CSSPropertyWebkitMaskPositionY; |
| } else if (propId == CSSPropertyBackgroundRepeat) { |
| propId1 = CSSPropertyBackgroundRepeatX; |
| propId2 = CSSPropertyBackgroundRepeatY; |
| } else if (propId == CSSPropertyWebkitMaskRepeat) { |
| propId1 = CSSPropertyWebkitMaskRepeatX; |
| propId2 = CSSPropertyWebkitMaskRepeatY; |
| } |
| |
| while (true) { |
| RefPtrWillBeRawPtr<CSSValue> currValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> currValue2 = nullptr; |
| |
| Units unitless = FUnknown; |
| CSSParserValue* val = m_valueList->current(); |
| ASSERT(val); |
| |
| switch (propId) { |
| case CSSPropertyBackgroundColor: |
| currValue = parseColor(val); |
| if (currValue) |
| m_valueList->next(); |
| break; |
| case CSSPropertyBackgroundAttachment: |
| if (val->id == CSSValueScroll || val->id == CSSValueFixed || val->id == CSSValueLocal) { |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundImage: |
| case CSSPropertyWebkitMaskImage: |
| if (parseFillImage(m_valueList, currValue)) |
| m_valueList->next(); |
| break; |
| case CSSPropertyWebkitBackgroundClip: |
| case CSSPropertyWebkitBackgroundOrigin: |
| case CSSPropertyWebkitMaskClip: |
| case CSSPropertyWebkitMaskOrigin: |
| // The first three values here are deprecated and do not apply to the version of the property that has |
| // the -webkit- prefix removed. |
| if (val->id == CSSValueBorder || val->id == CSSValuePadding || val->id == CSSValueContent |
| || val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox |
| || ((propId == CSSPropertyWebkitBackgroundClip || propId == CSSPropertyWebkitMaskClip) |
| && (val->id == CSSValueText || val->id == CSSValueWebkitText))) { |
| if (val->id == CSSValueWebkitText && m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::WebkitTextInClipProperty); |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundClip: |
| if (parseBackgroundClip(val, currValue)) { |
| if (val->id == CSSValueWebkitText && m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::WebkitTextInClipProperty); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundOrigin: |
| if (val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox) { |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundPosition: |
| if (!inShorthand()) |
| unitless = FUnitlessQuirk; |
| // fall-through |
| case CSSPropertyWebkitMaskPosition: |
| parseFillPosition(m_valueList, currValue, currValue2, unitless); |
| // parseFillPosition advances the m_valueList pointer. |
| break; |
| case CSSPropertyBackgroundPositionX: |
| case CSSPropertyWebkitMaskPositionX: { |
| currValue = parseFillPositionX(m_valueList); |
| if (currValue) |
| m_valueList->next(); |
| break; |
| } |
| case CSSPropertyBackgroundPositionY: |
| case CSSPropertyWebkitMaskPositionY: { |
| currValue = parseFillPositionY(m_valueList); |
| if (currValue) |
| m_valueList->next(); |
| break; |
| } |
| case CSSPropertyWebkitBackgroundComposite: |
| case CSSPropertyWebkitMaskComposite: |
| if (val->id >= CSSValueClear && val->id <= CSSValuePlusLighter) { |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundBlendMode: |
| if (val->id == CSSValueNormal || val->id == CSSValueMultiply |
| || val->id == CSSValueScreen || val->id == CSSValueOverlay || val->id == CSSValueDarken |
| || val->id == CSSValueLighten || val->id == CSSValueColorDodge || val->id == CSSValueColorBurn |
| || val->id == CSSValueHardLight || val->id == CSSValueSoftLight || val->id == CSSValueDifference |
| || val->id == CSSValueExclusion || val->id == CSSValueHue || val->id == CSSValueSaturation |
| || val->id == CSSValueColor || val->id == CSSValueLuminosity) { |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } |
| break; |
| case CSSPropertyBackgroundRepeat: |
| case CSSPropertyWebkitMaskRepeat: |
| parseFillRepeat(currValue, currValue2); |
| // parseFillRepeat advances the m_valueList pointer |
| break; |
| case CSSPropertyBackgroundSize: |
| case CSSPropertyAliasWebkitBackgroundSize: |
| case CSSPropertyWebkitMaskSize: { |
| currValue = parseFillSize(propId); |
| break; |
| } |
| case CSSPropertyMaskSourceType: { |
| ASSERT(RuntimeEnabledFeatures::cssMaskSourceTypeEnabled()); |
| if (val->id == CSSValueAuto || val->id == CSSValueAlpha || val->id == CSSValueLuminance) { |
| currValue = cssValuePool().createIdentifierValue(val->id); |
| m_valueList->next(); |
| } else { |
| currValue = nullptr; |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| if (!currValue) |
| return false; |
| |
| if (value && !values) { |
| values = CSSValueList::createCommaSeparated(); |
| values->append(value.release()); |
| } |
| |
| if (value2 && !values2) { |
| values2 = CSSValueList::createCommaSeparated(); |
| values2->append(value2.release()); |
| } |
| |
| if (values) |
| values->append(currValue.release()); |
| else |
| value = currValue.release(); |
| if (currValue2) { |
| if (values2) |
| values2->append(currValue2.release()); |
| else |
| value2 = currValue2.release(); |
| } |
| |
| // When parsing any fill shorthand property, we let it handle building up the lists for all |
| // properties. |
| if (inShorthand()) |
| break; |
| |
| if (!m_valueList->current()) |
| break; |
| if (!consumeComma(m_valueList) || !m_valueList->current()) |
| return false; |
| } |
| |
| if (values) { |
| ASSERT(values->length()); |
| retValue1 = values.release(); |
| if (values2) { |
| ASSERT(values2->length()); |
| retValue2 = values2.release(); |
| } |
| } else { |
| ASSERT(value); |
| retValue1 = value.release(); |
| retValue2 = value2.release(); |
| } |
| |
| return true; |
| } |
| |
| static inline bool isCSSWideKeyword(const CSSParserValue& value) |
| { |
| return value.id == CSSValueInitial || value.id == CSSValueInherit || value.id == CSSValueUnset || value.id == CSSValueDefault; |
| } |
| |
| static inline bool isValidCustomIdentForGridPositions(const CSSParserValue& value) |
| { |
| // FIXME: we need a more general solution for <custom-ident> in all properties. |
| return value.m_unit == CSSParserValue::Identifier && value.id != CSSValueSpan && value.id != CSSValueAuto && !isCSSWideKeyword(value); |
| } |
| |
| // The function parses [ <integer> || <custom-ident> ] in <grid-line> (which can be stand alone or with 'span'). |
| bool CSSPropertyParser::parseIntegerOrCustomIdentFromGridPosition(RefPtrWillBeRawPtr<CSSPrimitiveValue>& numericValue, RefPtrWillBeRawPtr<CSSCustomIdentValue>& gridLineName) |
| { |
| CSSParserValue* value = m_valueList->current(); |
| if (validUnit(value, FInteger) && value->fValue) { |
| numericValue = createPrimitiveNumericValue(value); |
| value = m_valueList->next(); |
| if (value && isValidCustomIdentForGridPositions(*value)) { |
| gridLineName = createPrimitiveCustomIdentValue(m_valueList->current()); |
| m_valueList->next(); |
| } |
| return true; |
| } |
| |
| if (isValidCustomIdentForGridPositions(*value)) { |
| gridLineName = createPrimitiveCustomIdentValue(m_valueList->current()); |
| value = m_valueList->next(); |
| if (value && validUnit(value, FInteger) && value->fValue) { |
| numericValue = createPrimitiveNumericValue(value); |
| m_valueList->next(); |
| } |
| return true; |
| } |
| |
| return false; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseGridPosition() |
| { |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| CSSParserValue* value = m_valueList->current(); |
| if (value->id == CSSValueAuto) { |
| m_valueList->next(); |
| return cssValuePool().createIdentifierValue(CSSValueAuto); |
| } |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> numericValue = nullptr; |
| RefPtrWillBeRawPtr<CSSCustomIdentValue> gridLineName = nullptr; |
| bool hasSeenSpanKeyword = false; |
| |
| if (parseIntegerOrCustomIdentFromGridPosition(numericValue, gridLineName)) { |
| value = m_valueList->current(); |
| if (value && value->id == CSSValueSpan) { |
| hasSeenSpanKeyword = true; |
| m_valueList->next(); |
| } |
| } else if (value->id == CSSValueSpan) { |
| hasSeenSpanKeyword = true; |
| if (CSSParserValue* nextValue = m_valueList->next()) { |
| if (!isForwardSlashOperator(nextValue) && !parseIntegerOrCustomIdentFromGridPosition(numericValue, gridLineName)) |
| return nullptr; |
| } |
| } |
| |
| // Check that we have consumed all the value list. For shorthands, the parser will pass |
| // the whole value list (including the opposite position). |
| if (m_valueList->current() && !isForwardSlashOperator(m_valueList->current())) |
| return nullptr; |
| |
| // If we didn't parse anything, this is not a valid grid position. |
| if (!hasSeenSpanKeyword && !gridLineName && !numericValue) |
| return nullptr; |
| |
| // Negative numbers are not allowed for span (but are for <integer>). |
| if (hasSeenSpanKeyword && numericValue && numericValue->getIntValue() < 0) |
| return nullptr; |
| |
| // For the <custom-ident> case. |
| if (gridLineName && !numericValue && !hasSeenSpanKeyword) |
| return CSSCustomIdentValue::create(gridLineName->value()); |
| |
| RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated(); |
| if (hasSeenSpanKeyword) |
| values->append(cssValuePool().createIdentifierValue(CSSValueSpan)); |
| if (numericValue) |
| values->append(numericValue.release()); |
| if (gridLineName) |
| values->append(gridLineName.release()); |
| ASSERT(values->length()); |
| return values.release(); |
| } |
| |
| static PassRefPtrWillBeRawPtr<CSSValue> gridMissingGridPositionValue(CSSValue* value) |
| { |
| if (value->isCustomIdentValue()) |
| return value; |
| |
| return cssValuePool().createIdentifierValue(CSSValueAuto); |
| } |
| |
| bool CSSPropertyParser::parseGridItemPositionShorthand(CSSPropertyID shorthandId, bool important) |
| { |
| ShorthandScope scope(this, shorthandId); |
| const StylePropertyShorthand& shorthand = shorthandForProperty(shorthandId); |
| ASSERT(shorthand.length() == 2); |
| |
| RefPtrWillBeRawPtr<CSSValue> startValue = parseGridPosition(); |
| if (!startValue) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSValue> endValue = nullptr; |
| if (m_valueList->current()) { |
| if (!isForwardSlashOperator(m_valueList->current())) |
| return false; |
| |
| if (!m_valueList->next()) |
| return false; |
| |
| endValue = parseGridPosition(); |
| if (!endValue || m_valueList->current()) |
| return false; |
| } else { |
| endValue = gridMissingGridPositionValue(startValue.get()); |
| } |
| |
| addProperty(shorthand.properties()[0], startValue, important); |
| addProperty(shorthand.properties()[1], endValue, important); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseGridGapShorthand(bool important) |
| { |
| ShorthandScope scope(this, CSSPropertyGridGap); |
| ASSERT(shorthandForProperty(CSSPropertyGridGap).length() == 2); |
| |
| CSSParserValue* value = m_valueList->current(); |
| if (!value) |
| return false; |
| |
| if (!validUnit(value, FLength | FNonNeg)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> columnGap = createPrimitiveNumericValue(value); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> rowGap = nullptr; |
| |
| value = m_valueList->next(); |
| if (value) { |
| if (!validUnit(value, FLength | FNonNeg)) |
| return false; |
| |
| rowGap = createPrimitiveNumericValue(value); |
| if (m_valueList->next()) |
| return false; |
| } else { |
| rowGap = columnGap; |
| } |
| |
| addProperty(CSSPropertyGridColumnGap, columnGap, important); |
| addProperty(CSSPropertyGridRowGap, rowGap, important); |
| |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseGridTemplateRowsAndAreas(PassRefPtrWillBeRawPtr<CSSValue> templateColumns, bool important) |
| { |
| NamedGridAreaMap gridAreaMap; |
| size_t rowCount = 0; |
| size_t columnCount = 0; |
| bool trailingIdentWasAdded = false; |
| RefPtrWillBeRawPtr<CSSValueList> templateRows = CSSValueList::createSpaceSeparated(); |
| |
| // At least template-areas strings must be defined. |
| if (!m_valueList->current()) |
| return false; |
| |
| while (m_valueList->current()) { |
| // Handle leading <custom-ident>*. |
| if (!parseGridLineNames(*m_valueList, *templateRows, trailingIdentWasAdded ? toCSSGridLineNamesValue(templateRows->item(templateRows->length() - 1)) : nullptr)) |
| return false; |
| |
| // Handle a template-area's row. |
| if (!parseGridTemplateAreasRow(gridAreaMap, rowCount, columnCount)) |
| return false; |
| ++rowCount; |
| |
| // Handle template-rows's track-size. |
| if (m_valueList->current() && m_valueList->current()->m_unit != CSSParserValue::String) { |
| RefPtrWillBeRawPtr<CSSValue> value = parseGridTrackSize(*m_valueList); |
| if (!value) |
| return false; |
| templateRows->append(value); |
| } else { |
| templateRows->append(cssValuePool().createIdentifierValue(CSSValueAuto)); |
| } |
| |
| // This will handle the trailing/leading <custom-ident>* in the grammar. |
| if (!parseGridLineNames(*m_valueList, *templateRows)) |
| return false; |
| trailingIdentWasAdded = templateRows->item(templateRows->length() - 1)->isGridLineNamesValue(); |
| } |
| |
| // [<track-list> /]? |
| if (templateColumns) |
| addProperty(CSSPropertyGridTemplateColumns, templateColumns, important); |
| else |
| addProperty(CSSPropertyGridTemplateColumns, cssValuePool().createIdentifierValue(CSSValueNone), important); |
| |
| // [<line-names>? <string> [<track-size> <line-names>]? ]+ |
| RefPtrWillBeRawPtr<CSSValue> templateAreas = CSSGridTemplateAreasValue::create(gridAreaMap, rowCount, columnCount); |
| addProperty(CSSPropertyGridTemplateAreas, templateAreas.release(), important); |
| addProperty(CSSPropertyGridTemplateRows, templateRows.release(), important); |
| |
| return true; |
| } |
| |
| |
| bool CSSPropertyParser::parseGridTemplateShorthand(bool important) |
| { |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| ShorthandScope scope(this, CSSPropertyGridTemplate); |
| ASSERT(gridTemplateShorthand().length() == 3); |
| |
| // At least "none" must be defined. |
| if (!m_valueList->current()) |
| return false; |
| |
| bool firstValueIsNone = m_valueList->current()->id == CSSValueNone; |
| |
| // 1- 'none' case. |
| if (firstValueIsNone && !m_valueList->next()) { |
| addProperty(CSSPropertyGridTemplateColumns, cssValuePool().createIdentifierValue(CSSValueNone), important); |
| addProperty(CSSPropertyGridTemplateRows, cssValuePool().createIdentifierValue(CSSValueNone), important); |
| addProperty(CSSPropertyGridTemplateAreas, cssValuePool().createIdentifierValue(CSSValueNone), important); |
| return true; |
| } |
| |
| unsigned index = 0; |
| RefPtrWillBeRawPtr<CSSValue> columnsValue = nullptr; |
| if (firstValueIsNone) { |
| columnsValue = cssValuePool().createIdentifierValue(CSSValueNone); |
| } else { |
| columnsValue = parseGridTrackList(); |
| } |
| |
| // 2- <grid-template-columns> / <grid-template-columns> syntax. |
| if (columnsValue) { |
| if (!(m_valueList->current() && isForwardSlashOperator(m_valueList->current()) && m_valueList->next())) |
| return false; |
| index = m_valueList->currentIndex(); |
| if (RefPtrWillBeRawPtr<CSSValue> rowsValue = parseGridTrackList()) { |
| if (m_valueList->current()) |
| return false; |
| addProperty(CSSPropertyGridTemplateColumns, columnsValue, important); |
| addProperty(CSSPropertyGridTemplateRows, rowsValue, important); |
| addProperty(CSSPropertyGridTemplateAreas, cssValuePool().createIdentifierValue(CSSValueNone), important); |
| return true; |
| } |
| } |
| |
| |
| // 3- [<track-list> /]? [<line-names>? <string> [<track-size> <line-names>]? ]+ syntax. |
| // The template-columns <track-list> can't be 'none'. |
| if (firstValueIsNone) |
| return false; |
| // It requires to rewind parsing due to previous syntax failures. |
| m_valueList->setCurrentIndex(index); |
| return parseGridTemplateRowsAndAreas(columnsValue, important); |
| } |
| |
| bool CSSPropertyParser::parseGridShorthand(bool important) |
| { |
| ShorthandScope scope(this, CSSPropertyGrid); |
| ASSERT(shorthandForProperty(CSSPropertyGrid).length() == 6); |
| |
| // 1- <grid-template> |
| if (parseGridTemplateShorthand(important)) { |
| // It can only be specified the explicit or the implicit grid properties in a single grid declaration. |
| // The sub-properties not specified are set to their initial value, as normal for shorthands. |
| addProperty(CSSPropertyGridAutoFlow, cssValuePool().createImplicitInitialValue(), important); |
| addProperty(CSSPropertyGridAutoColumns, cssValuePool().createImplicitInitialValue(), important); |
| addProperty(CSSPropertyGridAutoRows, cssValuePool().createImplicitInitialValue(), important); |
| return true; |
| } |
| |
| // Need to rewind parsing to explore the alternative syntax of this shorthand. |
| m_valueList->setCurrentIndex(0); |
| |
| // 2- <grid-auto-flow> [ <grid-auto-columns> [ / <grid-auto-rows> ]? ] |
| if (!parseValue(CSSPropertyGridAutoFlow, important)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSValue> autoColumnsValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> autoRowsValue = nullptr; |
| |
| if (m_valueList->current()) { |
| autoColumnsValue = parseGridTrackSize(*m_valueList); |
| if (!autoColumnsValue) |
| return false; |
| if (m_valueList->current()) { |
| if (!isForwardSlashOperator(m_valueList->current()) || !m_valueList->next()) |
| return false; |
| autoRowsValue = parseGridTrackSize(*m_valueList); |
| if (!autoRowsValue) |
| return false; |
| } |
| if (m_valueList->current()) |
| return false; |
| } else { |
| // Other omitted values are set to their initial values. |
| autoColumnsValue = cssValuePool().createImplicitInitialValue(); |
| autoRowsValue = cssValuePool().createImplicitInitialValue(); |
| } |
| |
| // if <grid-auto-rows> value is omitted, it is set to the value specified for grid-auto-columns. |
| if (!autoRowsValue) |
| autoRowsValue = autoColumnsValue; |
| |
| addProperty(CSSPropertyGridAutoColumns, autoColumnsValue, important); |
| addProperty(CSSPropertyGridAutoRows, autoRowsValue, important); |
| |
| // It can only be specified the explicit or the implicit grid properties in a single grid declaration. |
| // The sub-properties not specified are set to their initial value, as normal for shorthands. |
| addProperty(CSSPropertyGridTemplateColumns, cssValuePool().createImplicitInitialValue(), important); |
| addProperty(CSSPropertyGridTemplateRows, cssValuePool().createImplicitInitialValue(), important); |
| addProperty(CSSPropertyGridTemplateAreas, cssValuePool().createImplicitInitialValue(), important); |
| |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseGridAreaShorthand(bool important) |
| { |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| ShorthandScope scope(this, CSSPropertyGridArea); |
| const StylePropertyShorthand& shorthand = gridAreaShorthand(); |
| ASSERT_UNUSED(shorthand, shorthand.length() == 4); |
| |
| RefPtrWillBeRawPtr<CSSValue> rowStartValue = parseGridPosition(); |
| if (!rowStartValue) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSValue> columnStartValue = nullptr; |
| if (!parseSingleGridAreaLonghand(columnStartValue)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSValue> rowEndValue = nullptr; |
| if (!parseSingleGridAreaLonghand(rowEndValue)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSValue> columnEndValue = nullptr; |
| if (!parseSingleGridAreaLonghand(columnEndValue)) |
| return false; |
| |
| if (!columnStartValue) |
| columnStartValue = gridMissingGridPositionValue(rowStartValue.get()); |
| |
| if (!rowEndValue) |
| rowEndValue = gridMissingGridPositionValue(rowStartValue.get()); |
| |
| if (!columnEndValue) |
| columnEndValue = gridMissingGridPositionValue(columnStartValue.get()); |
| |
| addProperty(CSSPropertyGridRowStart, rowStartValue, important); |
| addProperty(CSSPropertyGridColumnStart, columnStartValue, important); |
| addProperty(CSSPropertyGridRowEnd, rowEndValue, important); |
| addProperty(CSSPropertyGridColumnEnd, columnEndValue, important); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseSingleGridAreaLonghand(RefPtrWillBeRawPtr<CSSValue>& property) |
| { |
| if (!m_valueList->current()) |
| return true; |
| |
| if (!isForwardSlashOperator(m_valueList->current())) |
| return false; |
| |
| if (!m_valueList->next()) |
| return false; |
| |
| property = parseGridPosition(); |
| return true; |
| } |
| |
| static inline bool isClosingBracket(const CSSParserValue& value) |
| { |
| return value.m_unit == CSSParserValue::Operator && value.iValue == ']'; |
| } |
| |
| bool CSSPropertyParser::parseGridLineNames(CSSParserValueList& inputList, CSSValueList& valueList, CSSGridLineNamesValue* previousNamedAreaTrailingLineNames) |
| { |
| if (!inputList.current() || inputList.current()->m_unit != CSSParserValue::Operator || inputList.current()->iValue != '[') |
| return true; |
| |
| // Skip '[' |
| inputList.next(); |
| |
| RefPtrWillBeRawPtr<CSSGridLineNamesValue> lineNames = previousNamedAreaTrailingLineNames; |
| if (!lineNames) |
| lineNames = CSSGridLineNamesValue::create(); |
| |
| while (CSSParserValue* identValue = inputList.current()) { |
| if (isClosingBracket(*identValue)) |
| break; |
| |
| if (!isValidCustomIdentForGridPositions(*identValue)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSCustomIdentValue> lineName = createPrimitiveCustomIdentValue(identValue); |
| lineNames->append(lineName.release()); |
| inputList.next(); |
| } |
| |
| if (!inputList.current() || !isClosingBracket(*inputList.current())) |
| return false; |
| |
| if (!previousNamedAreaTrailingLineNames) |
| valueList.append(lineNames.release()); |
| |
| // Consume ']' |
| inputList.next(); |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseGridTrackList() |
| { |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| CSSParserValue* value = m_valueList->current(); |
| if (value->id == CSSValueNone) { |
| m_valueList->next(); |
| return cssValuePool().createIdentifierValue(CSSValueNone); |
| } |
| |
| RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated(); |
| // Handle leading <custom-ident>*. |
| if (!parseGridLineNames(*m_valueList, *values)) |
| return nullptr; |
| |
| bool seenTrackSizeOrRepeatFunction = false; |
| while (CSSParserValue* currentValue = m_valueList->current()) { |
| if (isForwardSlashOperator(currentValue)) |
| break; |
| if (currentValue->m_unit == CSSParserValue::Function && currentValue->function->id == CSSValueRepeat) { |
| if (!parseGridTrackRepeatFunction(*values)) |
| return nullptr; |
| seenTrackSizeOrRepeatFunction = true; |
| } else { |
| RefPtrWillBeRawPtr<CSSValue> value = parseGridTrackSize(*m_valueList); |
| if (!value) |
| return nullptr; |
| values->append(value); |
| seenTrackSizeOrRepeatFunction = true; |
| } |
| // This will handle the trailing <custom-ident>* in the grammar. |
| if (!parseGridLineNames(*m_valueList, *values)) |
| return nullptr; |
| } |
| |
| // We should have found a <track-size> or else it is not a valid <track-list> |
| if (!seenTrackSizeOrRepeatFunction) |
| return nullptr; |
| |
| return values; |
| } |
| |
| bool CSSPropertyParser::parseGridTrackRepeatFunction(CSSValueList& list) |
| { |
| CSSParserValueList* arguments = m_valueList->current()->function->args.get(); |
| if (!arguments || arguments->size() < 3 || !validUnit(arguments->valueAt(0), FPositiveInteger) || !isComma(arguments->valueAt(1))) |
| return false; |
| |
| ASSERT(arguments->valueAt(0)->fValue > 0); |
| size_t repetitions = clampTo<size_t>(arguments->valueAt(0)->fValue, 0, kGridMaxTracks); |
| |
| RefPtrWillBeRawPtr<CSSValueList> repeatedValues = CSSValueList::createSpaceSeparated(); |
| arguments->next(); // Skip the repetition count. |
| arguments->next(); // Skip the comma. |
| |
| // Handle leading <custom-ident>*. |
| if (!parseGridLineNames(*arguments, *repeatedValues)) |
| return false; |
| |
| size_t numberOfTracks = 0; |
| while (arguments->current()) { |
| RefPtrWillBeRawPtr<CSSValue> trackSize = parseGridTrackSize(*arguments); |
| if (!trackSize) |
| return false; |
| |
| repeatedValues->append(trackSize); |
| ++numberOfTracks; |
| |
| // This takes care of any trailing <custom-ident>* in the grammar. |
| if (!parseGridLineNames(*arguments, *repeatedValues)) |
| return false; |
| } |
| |
| // We should have found at least one <track-size> or else it is not a valid <track-list>. |
| if (!numberOfTracks) |
| return false; |
| |
| // We clamp the number of repetitions to a multiple of the repeat() track list's size, while staying below the max |
| // grid size. |
| repetitions = std::min(repetitions, kGridMaxTracks / numberOfTracks); |
| |
| for (size_t i = 0; i < repetitions; ++i) { |
| for (size_t j = 0; j < repeatedValues->length(); ++j) |
| list.append(repeatedValues->item(j)); |
| } |
| |
| // parseGridTrackSize iterated over the repeat arguments, move to the next value. |
| m_valueList->next(); |
| return true; |
| } |
| |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseGridTrackSize(CSSParserValueList& inputList) |
| { |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| CSSParserValue* currentValue = inputList.current(); |
| inputList.next(); |
| |
| if (currentValue->id == CSSValueAuto) |
| return cssValuePool().createIdentifierValue(CSSValueAuto); |
| |
| if (currentValue->m_unit == CSSParserValue::Function && currentValue->function->id == CSSValueMinmax) { |
| // The spec defines the following grammar: minmax( <track-breadth> , <track-breadth> ) |
| CSSParserValueList* arguments = currentValue->function->args.get(); |
| if (!arguments || arguments->size() != 3 || !isComma(arguments->valueAt(1))) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> minTrackBreadth = parseGridBreadth(arguments->valueAt(0)); |
| if (!minTrackBreadth) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> maxTrackBreadth = parseGridBreadth(arguments->valueAt(2)); |
| if (!maxTrackBreadth) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSFunctionValue> result = CSSFunctionValue::create(CSSValueMinmax); |
| result->append(minTrackBreadth); |
| result->append(maxTrackBreadth); |
| return result.release(); |
| } |
| |
| return parseGridBreadth(currentValue); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseGridBreadth(CSSParserValue* currentValue) |
| { |
| if (currentValue->id == CSSValueMinContent || currentValue->id == CSSValueMaxContent || currentValue->id == CSSValueAuto) |
| return cssValuePool().createIdentifierValue(currentValue->id); |
| |
| if (currentValue->unit() == CSSPrimitiveValue::UnitType::Fraction) { |
| double flexValue = currentValue->fValue; |
| |
| // Fractional unit is a non-negative dimension. |
| if (flexValue < 0) |
| return nullptr; |
| |
| return cssValuePool().createValue(flexValue, CSSPrimitiveValue::UnitType::Fraction); |
| } |
| |
| if (!validUnit(currentValue, FNonNeg | FLength | FPercent)) |
| return nullptr; |
| |
| return createPrimitiveNumericValue(currentValue); |
| } |
| |
| static Vector<String> parseGridTemplateAreasColumnNames(const String& gridRowNames) |
| { |
| ASSERT(!gridRowNames.isEmpty()); |
| Vector<String> columnNames; |
| // Using StringImpl to avoid checks and indirection in every call to String::operator[]. |
| StringImpl& text = *gridRowNames.impl(); |
| |
| StringBuilder areaName; |
| for (unsigned i = 0; i < text.length(); ++i) { |
| if (text[i] == ' ') { |
| if (!areaName.isEmpty()) { |
| columnNames.append(areaName.toString()); |
| areaName.clear(); |
| } |
| continue; |
| } |
| if (text[i] == '.') { |
| if (areaName == ".") |
| continue; |
| if (!areaName.isEmpty()) { |
| columnNames.append(areaName.toString()); |
| areaName.clear(); |
| } |
| } else { |
| if (areaName == ".") { |
| columnNames.append(areaName.toString()); |
| areaName.clear(); |
| } |
| } |
| |
| areaName.append(text[i]); |
| } |
| |
| if (!areaName.isEmpty()) |
| columnNames.append(areaName.toString()); |
| |
| return columnNames; |
| } |
| |
| bool CSSPropertyParser::parseGridTemplateAreasRow(NamedGridAreaMap& gridAreaMap, const size_t rowCount, size_t& columnCount) |
| { |
| CSSParserValue* currentValue = m_valueList->current(); |
| if (!currentValue || currentValue->m_unit != CSSParserValue::String) |
| return false; |
| |
| String gridRowNames = currentValue->string; |
| if (gridRowNames.isEmpty() || gridRowNames.containsOnlyWhitespace()) |
| return false; |
| |
| Vector<String> columnNames = parseGridTemplateAreasColumnNames(gridRowNames); |
| if (!columnCount) { |
| columnCount = columnNames.size(); |
| ASSERT(columnCount); |
| } else if (columnCount != columnNames.size()) { |
| // The declaration is invalid is all the rows don't have the number of columns. |
| return false; |
| } |
| |
| for (size_t currentCol = 0; currentCol < columnCount; ++currentCol) { |
| const String& gridAreaName = columnNames[currentCol]; |
| |
| // Unamed areas are always valid (we consider them to be 1x1). |
| if (gridAreaName == ".") |
| continue; |
| |
| // We handle several grid areas with the same name at once to simplify the validation code. |
| size_t lookAheadCol; |
| for (lookAheadCol = currentCol + 1; lookAheadCol < columnCount; ++lookAheadCol) { |
| if (columnNames[lookAheadCol] != gridAreaName) |
| break; |
| } |
| |
| NamedGridAreaMap::iterator gridAreaIt = gridAreaMap.find(gridAreaName); |
| if (gridAreaIt == gridAreaMap.end()) { |
| gridAreaMap.add(gridAreaName, GridCoordinate(GridSpan(rowCount, rowCount + 1), GridSpan(currentCol, lookAheadCol))); |
| } else { |
| GridCoordinate& gridCoordinate = gridAreaIt->value; |
| |
| // The following checks test that the grid area is a single filled-in rectangle. |
| // 1. The new row is adjacent to the previously parsed row. |
| if (rowCount != gridCoordinate.rows.resolvedFinalPosition.toInt()) |
| return false; |
| |
| // 2. The new area starts at the same position as the previously parsed area. |
| if (currentCol != gridCoordinate.columns.resolvedInitialPosition.toInt()) |
| return false; |
| |
| // 3. The new area ends at the same position as the previously parsed area. |
| if (lookAheadCol != gridCoordinate.columns.resolvedFinalPosition.toInt()) |
| return false; |
| |
| ++gridCoordinate.rows.resolvedFinalPosition; |
| } |
| currentCol = lookAheadCol - 1; |
| } |
| |
| m_valueList->next(); |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseGridTemplateAreas() |
| { |
| if (m_valueList->current() && m_valueList->current()->id == CSSValueNone) { |
| m_valueList->next(); |
| return cssValuePool().createIdentifierValue(CSSValueNone); |
| } |
| |
| NamedGridAreaMap gridAreaMap; |
| size_t rowCount = 0; |
| size_t columnCount = 0; |
| |
| while (m_valueList->current()) { |
| if (!parseGridTemplateAreasRow(gridAreaMap, rowCount, columnCount)) |
| return nullptr; |
| ++rowCount; |
| } |
| |
| if (!rowCount || !columnCount) |
| return nullptr; |
| |
| return CSSGridTemplateAreasValue::create(gridAreaMap, rowCount, columnCount); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseGridAutoFlow(CSSParserValueList& list) |
| { |
| // [ row | column ] || dense |
| ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled()); |
| |
| CSSParserValue* value = list.current(); |
| if (!value) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated(); |
| |
| // First parameter. |
| CSSValueID firstId = value->id; |
| if (firstId != CSSValueRow && firstId != CSSValueColumn && firstId != CSSValueDense) |
| return nullptr; |
| parsedValues->append(cssValuePool().createIdentifierValue(firstId)); |
| |
| // Second parameter, if any. |
| value = list.next(); |
| if (value) { |
| switch (firstId) { |
| case CSSValueRow: |
| case CSSValueColumn: |
| if (value->id != CSSValueDense) |
| return parsedValues; |
| break; |
| case CSSValueDense: |
| if (value->id != CSSValueRow && value->id != CSSValueColumn) |
| return parsedValues; |
| break; |
| default: |
| return parsedValues; |
| } |
| parsedValues->append(cssValuePool().createIdentifierValue(value->id)); |
| list.next(); |
| } |
| |
| return parsedValues; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseCounterContent(CSSParserValueList* args, bool counters) |
| { |
| unsigned numArgs = args->size(); |
| if (counters && numArgs != 3 && numArgs != 5) |
| return nullptr; |
| if (!counters && numArgs != 1 && numArgs != 3) |
| return nullptr; |
| |
| CSSParserValue* i = args->current(); |
| if (i->m_unit != CSSParserValue::Identifier) |
| return nullptr; |
| RefPtrWillBeRawPtr<CSSCustomIdentValue> identifier = createPrimitiveCustomIdentValue(i); |
| |
| RefPtrWillBeRawPtr<CSSCustomIdentValue> separator = nullptr; |
| if (!counters) |
| separator = CSSCustomIdentValue::create(String()); |
| else { |
| args->next(); |
| if (!consumeComma(args)) |
| return nullptr; |
| |
| i = args->current(); |
| if (i->m_unit != CSSParserValue::String) |
| return nullptr; |
| |
| separator = createPrimitiveCustomIdentValue(i); |
| } |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> listStyle = nullptr; |
| i = args->next(); |
| if (!i) // Make the list style default decimal |
| listStyle = cssValuePool().createIdentifierValue(CSSValueDecimal); |
| else { |
| if (!consumeComma(args)) |
| return nullptr; |
| |
| i = args->current(); |
| if (i->m_unit != CSSParserValue::Identifier) |
| return nullptr; |
| |
| CSSValueID listStyleID = CSSValueInvalid; |
| if (i->id == CSSValueNone || (i->id >= CSSValueDisc && i->id <= CSSValueKatakanaIroha)) |
| listStyleID = i->id; |
| else |
| return nullptr; |
| |
| listStyle = cssValuePool().createIdentifierValue(listStyleID); |
| } |
| |
| return CSSCounterValue::create(identifier.release(), listStyle.release(), separator.release()); |
| } |
| |
| static void completeBorderRadii(RefPtrWillBeRawPtr<CSSPrimitiveValue> radii[4]) |
| { |
| if (radii[3]) |
| return; |
| if (!radii[2]) { |
| if (!radii[1]) |
| radii[1] = radii[0]; |
| radii[2] = radii[0]; |
| } |
| radii[3] = radii[1]; |
| } |
| |
| // FIXME: This should be refactored with parseBorderRadius. |
| // parseBorderRadius contains support for some legacy radius construction. |
| PassRefPtrWillBeRawPtr<CSSBasicShapeInsetValue> CSSPropertyParser::parseInsetRoundedCorners(PassRefPtrWillBeRawPtr<CSSBasicShapeInsetValue> shape, CSSParserValueList* args) |
| { |
| CSSParserValue* argument = args->next(); |
| |
| if (!argument) |
| return nullptr; |
| |
| Vector<CSSParserValue*> radiusArguments; |
| while (argument) { |
| radiusArguments.append(argument); |
| argument = args->next(); |
| } |
| |
| unsigned num = radiusArguments.size(); |
| if (!num || num > 9) |
| return nullptr; |
| |
| // FIXME: Refactor completeBorderRadii and the array |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> radii[2][4]; |
| #if ENABLE(OILPAN) |
| // Zero initialize the array of raw pointers. |
| memset(&radii, 0, sizeof(radii)); |
| #endif |
| |
| unsigned indexAfterSlash = 0; |
| for (unsigned i = 0; i < num; ++i) { |
| CSSParserValue* value = radiusArguments.at(i); |
| if (value->m_unit == CSSParserValue::Operator) { |
| if (value->iValue != '/') |
| return nullptr; |
| |
| if (!i || indexAfterSlash || i + 1 == num) |
| return nullptr; |
| |
| indexAfterSlash = i + 1; |
| completeBorderRadii(radii[0]); |
| continue; |
| } |
| |
| if (i - indexAfterSlash >= 4) |
| return nullptr; |
| |
| if (!validUnit(value, FLength | FPercent | FNonNeg)) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> radius = createPrimitiveNumericValue(value); |
| |
| if (!indexAfterSlash) |
| radii[0][i] = radius; |
| else |
| radii[1][i - indexAfterSlash] = radius.release(); |
| } |
| |
| if (!indexAfterSlash) { |
| completeBorderRadii(radii[0]); |
| for (unsigned i = 0; i < 4; ++i) |
| radii[1][i] = radii[0][i]; |
| } else { |
| completeBorderRadii(radii[1]); |
| } |
| shape->setTopLeftRadius(CSSValuePair::create(radii[0][0].release(), radii[1][0].release(), CSSValuePair::DropIdenticalValues)); |
| shape->setTopRightRadius(CSSValuePair::create(radii[0][1].release(), radii[1][1].release(), CSSValuePair::DropIdenticalValues)); |
| shape->setBottomRightRadius(CSSValuePair::create(radii[0][2].release(), radii[1][2].release(), CSSValuePair::DropIdenticalValues)); |
| shape->setBottomLeftRadius(CSSValuePair::create(radii[0][3].release(), radii[1][3].release(), CSSValuePair::DropIdenticalValues)); |
| |
| return shape; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSBasicShapeInsetValue> CSSPropertyParser::parseBasicShapeInset(CSSParserValueList* args) |
| { |
| ASSERT(args); |
| |
| RefPtrWillBeRawPtr<CSSBasicShapeInsetValue> shape = CSSBasicShapeInsetValue::create(); |
| |
| CSSParserValue* argument = args->current(); |
| WillBeHeapVector<RefPtrWillBeMember<CSSPrimitiveValue>> widthArguments; |
| bool hasRoundedInset = false; |
| |
| while (argument) { |
| if (argument->m_unit == CSSParserValue::Identifier && argument->id == CSSValueRound) { |
| hasRoundedInset = true; |
| break; |
| } |
| |
| Units unitFlags = FLength | FPercent; |
| if (!validUnit(argument, unitFlags) || widthArguments.size() > 4) |
| return nullptr; |
| |
| widthArguments.append(createPrimitiveNumericValue(argument)); |
| argument = args->next(); |
| } |
| |
| switch (widthArguments.size()) { |
| case 1: { |
| shape->updateShapeSize1Value(widthArguments[0].get()); |
| break; |
| } |
| case 2: { |
| shape->updateShapeSize2Values(widthArguments[0].get(), widthArguments[1].get()); |
| break; |
| } |
| case 3: { |
| shape->updateShapeSize3Values(widthArguments[0].get(), widthArguments[1].get(), widthArguments[2].get()); |
| break; |
| } |
| case 4: { |
| shape->updateShapeSize4Values(widthArguments[0].get(), widthArguments[1].get(), widthArguments[2].get(), widthArguments[3].get()); |
| break; |
| } |
| default: |
| return nullptr; |
| } |
| |
| if (hasRoundedInset) |
| return parseInsetRoundedCorners(shape.release(), args); |
| return shape.release(); |
| } |
| |
| static bool isContentDistributionKeyword(CSSValueID id) |
| { |
| return id == CSSValueSpaceBetween || id == CSSValueSpaceAround |
| || id == CSSValueSpaceEvenly || id == CSSValueStretch; |
| } |
| |
| static bool isContentPositionKeyword(CSSValueID id) |
| { |
| return id == CSSValueStart || id == CSSValueEnd || id == CSSValueCenter |
| || id == CSSValueFlexStart || id == CSSValueFlexEnd |
| || id == CSSValueLeft || id == CSSValueRight; |
| } |
| |
| static bool isBaselinePositionKeyword(CSSValueID id) |
| { |
| return id == CSSValueBaseline || id == CSSValueLastBaseline; |
| } |
| |
| static bool isAlignmentOverflowKeyword(CSSValueID id) |
| { |
| return id == CSSValueTrue || id == CSSValueSafe; |
| } |
| |
| static bool isItemPositionKeyword(CSSValueID id) |
| { |
| return id == CSSValueStart || id == CSSValueEnd || id == CSSValueCenter |
| || id == CSSValueSelfStart || id == CSSValueSelfEnd || id == CSSValueFlexStart |
| || id == CSSValueFlexEnd || id == CSSValueLeft || id == CSSValueRight; |
| } |
| |
| bool CSSPropertyParser::parseLegacyPosition(CSSPropertyID propId, bool important) |
| { |
| // [ legacy && [ left | right | center ] |
| |
| CSSParserValue* value = m_valueList->current(); |
| ASSERT(value); |
| |
| if (value->id == CSSValueLegacy) { |
| value = m_valueList->next(); |
| if (!value) |
| return false; |
| if (value->id != CSSValueCenter && value->id != CSSValueLeft && value->id != CSSValueRight) |
| return false; |
| } else if (value->id == CSSValueCenter || value->id == CSSValueLeft || value->id == CSSValueRight) { |
| if (!m_valueList->next() || m_valueList->current()->id != CSSValueLegacy) |
| return false; |
| } else { |
| return false; |
| } |
| |
| addProperty(propId, CSSValuePair::create(cssValuePool().createIdentifierValue(CSSValueLegacy), cssValuePool().createIdentifierValue(value->id), CSSValuePair::DropIdenticalValues), important); |
| return !m_valueList->next(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseContentDistributionOverflowPosition() |
| { |
| // auto | <baseline-position> | <content-distribution> || [ <overflow-position>? && <content-position> ] |
| // <baseline-position> = baseline | last-baseline; |
| // <content-distribution> = space-between | space-around | space-evenly | stretch; |
| // <content-position> = center | start | end | flex-start | flex-end | left | right; |
| // <overflow-position> = true | safe |
| |
| // auto | <baseline-position> |
| CSSParserValue* value = m_valueList->current(); |
| if (value->id == CSSValueAuto || isBaselinePositionKeyword(value->id)) { |
| m_valueList->next(); |
| return CSSContentDistributionValue::create(CSSValueInvalid, value->id, CSSValueInvalid); |
| } |
| |
| CSSValueID distribution = CSSValueInvalid; |
| CSSValueID position = CSSValueInvalid; |
| CSSValueID overflow = CSSValueInvalid; |
| while (value) { |
| if (isContentDistributionKeyword(value->id)) { |
| if (distribution != CSSValueInvalid) |
| return nullptr; |
| distribution = value->id; |
| } else if (isContentPositionKeyword(value->id)) { |
| if (position != CSSValueInvalid) |
| return nullptr; |
| position = value->id; |
| } else if (isAlignmentOverflowKeyword(value->id)) { |
| if (overflow != CSSValueInvalid) |
| return nullptr; |
| overflow = value->id; |
| } else { |
| return nullptr; |
| } |
| value = m_valueList->next(); |
| } |
| |
| // The grammar states that we should have at least <content-distribution> or |
| // <content-position> ( <content-distribution> || <content-position> ). |
| if (position == CSSValueInvalid && distribution == CSSValueInvalid) |
| return nullptr; |
| |
| // The grammar states that <overflow-position> must be associated to <content-position>. |
| if (overflow != CSSValueInvalid && position == CSSValueInvalid) |
| return nullptr; |
| |
| return CSSContentDistributionValue::create(distribution, position, overflow); |
| } |
| |
| bool CSSPropertyParser::parseItemPositionOverflowPosition(CSSPropertyID propId, bool important) |
| { |
| // auto | stretch | <baseline-position> | [<item-position> && <overflow-position>? ] |
| // <baseline-position> = baseline | last-baseline; |
| // <item-position> = center | start | end | self-start | self-end | flex-start | flex-end | left | right; |
| // <overflow-position> = true | safe |
| |
| CSSParserValue* value = m_valueList->current(); |
| ASSERT(value); |
| |
| if (value->id == CSSValueAuto || value->id == CSSValueStretch || isBaselinePositionKeyword(value->id)) { |
| if (m_valueList->next()) |
| return false; |
| |
| addProperty(propId, cssValuePool().createIdentifierValue(value->id), important); |
| return true; |
| } |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> position = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> overflowAlignmentKeyword = nullptr; |
| if (isItemPositionKeyword(value->id)) { |
| position = cssValuePool().createIdentifierValue(value->id); |
| value = m_valueList->next(); |
| if (value) { |
| if (isAlignmentOverflowKeyword(value->id)) |
| overflowAlignmentKeyword = cssValuePool().createIdentifierValue(value->id); |
| else |
| return false; |
| } |
| } else if (isAlignmentOverflowKeyword(value->id)) { |
| overflowAlignmentKeyword = cssValuePool().createIdentifierValue(value->id); |
| value = m_valueList->next(); |
| if (value && isItemPositionKeyword(value->id)) |
| position = cssValuePool().createIdentifierValue(value->id); |
| else |
| return false; |
| } else { |
| return false; |
| } |
| |
| if (m_valueList->next()) |
| return false; |
| |
| ASSERT(position); |
| if (overflowAlignmentKeyword) |
| addProperty(propId, CSSValuePair::create(position, overflowAlignmentKeyword, CSSValuePair::DropIdenticalValues), important); |
| else |
| addProperty(propId, position.release(), important); |
| |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseShapeRadius(CSSParserValue* value) |
| { |
| if (value->id == CSSValueClosestSide || value->id == CSSValueFarthestSide) |
| return cssValuePool().createIdentifierValue(value->id); |
| |
| if (!validUnit(value, FLength | FPercent | FNonNeg)) |
| return nullptr; |
| |
| return createPrimitiveNumericValue(value); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSBasicShapeCircleValue> CSSPropertyParser::parseBasicShapeCircle(CSSParserValueList* args) |
| { |
| ASSERT(args); |
| |
| // circle(radius) |
| // circle(radius at <position>) |
| // circle(at <position>) |
| // where position defines centerX and centerY using a CSS <position> data type. |
| RefPtrWillBeRawPtr<CSSBasicShapeCircleValue> shape = CSSBasicShapeCircleValue::create(); |
| |
| for (CSSParserValue* argument = args->current(); argument; argument = args->next()) { |
| // The call to parseFillPosition below should consume all of the |
| // arguments except the first two. Thus, and index greater than one |
| // indicates an invalid production. |
| if (args->currentIndex() > 1) |
| return nullptr; |
| |
| if (!args->currentIndex() && argument->id != CSSValueAt) { |
| if (RefPtrWillBeRawPtr<CSSPrimitiveValue> radius = parseShapeRadius(argument)) { |
| shape->setRadius(radius); |
| continue; |
| } |
| |
| return nullptr; |
| } |
| |
| if (argument->id == CSSValueAt && args->next()) { |
| RefPtrWillBeRawPtr<CSSValue> centerX = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> centerY = nullptr; |
| parseFillPosition(args, centerX, centerY); |
| if (centerX && centerY && !args->current()) { |
| shape->setCenterX(centerX); |
| shape->setCenterY(centerY); |
| } else { |
| return nullptr; |
| } |
| } else { |
| return nullptr; |
| } |
| } |
| |
| return shape.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSBasicShapeEllipseValue> CSSPropertyParser::parseBasicShapeEllipse(CSSParserValueList* args) |
| { |
| ASSERT(args); |
| |
| // ellipse(radiusX) |
| // ellipse(radiusX at <position>) |
| // ellipse(radiusX radiusY) |
| // ellipse(radiusX radiusY at <position>) |
| // ellipse(at <position>) |
| // where position defines centerX and centerY using a CSS <position> data type. |
| RefPtrWillBeRawPtr<CSSBasicShapeEllipseValue> shape = CSSBasicShapeEllipseValue::create(); |
| |
| for (CSSParserValue* argument = args->current(); argument; argument = args->next()) { |
| // The call to parseFillPosition below should consume all of the |
| // arguments except the first three. Thus, an index greater than two |
| // indicates an invalid production. |
| if (args->currentIndex() > 2) |
| return nullptr; |
| |
| if (args->currentIndex() < 2 && argument->id != CSSValueAt) { |
| if (RefPtrWillBeRawPtr<CSSPrimitiveValue> radius = parseShapeRadius(argument)) { |
| if (!shape->radiusX()) |
| shape->setRadiusX(radius); |
| else |
| shape->setRadiusY(radius); |
| continue; |
| } |
| |
| return nullptr; |
| } |
| |
| if (argument->id != CSSValueAt || !args->next()) // expecting ellipse(.. at <position>) |
| return nullptr; |
| RefPtrWillBeRawPtr<CSSValue> centerX = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> centerY = nullptr; |
| parseFillPosition(args, centerX, centerY); |
| if (!centerX || !centerY || args->current()) |
| return nullptr; |
| |
| shape->setCenterX(centerX); |
| shape->setCenterY(centerY); |
| } |
| |
| return shape.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSBasicShapePolygonValue> CSSPropertyParser::parseBasicShapePolygon(CSSParserValueList* args) |
| { |
| ASSERT(args); |
| |
| unsigned size = args->size(); |
| if (!size) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSBasicShapePolygonValue> shape = CSSBasicShapePolygonValue::create(); |
| |
| CSSParserValue* argument = args->current(); |
| if (argument->id == CSSValueEvenodd || argument->id == CSSValueNonzero) { |
| shape->setWindRule(argument->id == CSSValueEvenodd ? RULE_EVENODD : RULE_NONZERO); |
| args->next(); |
| |
| if (!consumeComma(args)) |
| return nullptr; |
| |
| size -= 2; |
| } |
| |
| // <length> <length>, ... <length> <length> -> each pair has 3 elements except the last one |
| if (!size || (size % 3) - 2) |
| return nullptr; |
| |
| while (true) { |
| CSSParserValue* argumentX = args->current(); |
| if (!argumentX || !validUnit(argumentX, FLength | FPercent)) |
| return nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> xLength = createPrimitiveNumericValue(argumentX); |
| |
| CSSParserValue* argumentY = args->next(); |
| if (!argumentY || !validUnit(argumentY, FLength | FPercent)) |
| return nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> yLength = createPrimitiveNumericValue(argumentY); |
| |
| shape->appendPoint(xLength.release(), yLength.release()); |
| |
| if (!args->next()) |
| break; |
| if (!consumeComma(args)) |
| return nullptr; |
| } |
| |
| return shape.release(); |
| } |
| |
| static bool isBoxValue(CSSValueID valueId) |
| { |
| switch (valueId) { |
| case CSSValueContentBox: |
| case CSSValuePaddingBox: |
| case CSSValueBorderBox: |
| case CSSValueMarginBox: |
| return true; |
| default: |
| break; |
| } |
| |
| return false; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseShapeProperty(CSSPropertyID propId) |
| { |
| RefPtrWillBeRawPtr<CSSValue> imageValue = nullptr; |
| if (parseFillImage(m_valueList, imageValue)) { |
| m_valueList->next(); |
| return imageValue.release(); |
| } |
| |
| return parseBasicShapeAndOrBox(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseBasicShapeAndOrBox() |
| { |
| CSSParserValue* value = m_valueList->current(); |
| |
| bool shapeFound = false; |
| bool boxFound = false; |
| CSSValueID valueId; |
| |
| RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated(); |
| for (unsigned i = 0; i < 2; ++i) { |
| if (!value) |
| break; |
| valueId = value->id; |
| if (value->m_unit == CSSParserValue::Function && !shapeFound) { |
| // parseBasicShape already asks for the next value list item. |
| RefPtrWillBeRawPtr<CSSValue> shapeValue = parseBasicShape(); |
| if (!shapeValue) |
| return nullptr; |
| list->append(shapeValue.release()); |
| shapeFound = true; |
| } else if (isBoxValue(valueId) && !boxFound) { |
| list->append(parseValidPrimitive(valueId, value)); |
| boxFound = true; |
| m_valueList->next(); |
| } else { |
| return nullptr; |
| } |
| |
| value = m_valueList->current(); |
| } |
| |
| if (m_valueList->current()) |
| return nullptr; |
| return list.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseBasicShape() |
| { |
| CSSParserValue* value = m_valueList->current(); |
| ASSERT(value->m_unit == CSSParserValue::Function); |
| CSSParserValueList* args = value->function->args.get(); |
| |
| if (!args) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSValue> shape = nullptr; |
| if (value->function->id == CSSValueCircle) |
| shape = parseBasicShapeCircle(args); |
| else if (value->function->id == CSSValueEllipse) |
| shape = parseBasicShapeEllipse(args); |
| else if (value->function->id == CSSValuePolygon) |
| shape = parseBasicShapePolygon(args); |
| else if (value->function->id == CSSValueInset) |
| shape = parseBasicShapeInset(args); |
| |
| if (!shape) |
| return nullptr; |
| |
| m_valueList->next(); |
| |
| return shape.release(); |
| } |
| |
| inline int CSSPropertyParser::colorIntFromValue(CSSParserValue* v) |
| { |
| bool isPercent; |
| double value; |
| |
| if (m_parsedCalculation) { |
| isPercent = m_parsedCalculation->category() == CalcPercent; |
| value = m_parsedCalculation->doubleValue(); |
| m_parsedCalculation.release(); |
| } else { |
| isPercent = v->unit() == CSSPrimitiveValue::UnitType::Percentage; |
| value = v->fValue; |
| } |
| |
| if (value <= 0.0) |
| return 0; |
| |
| if (isPercent) { |
| if (value >= 100.0) |
| return 255; |
| return static_cast<int>(value * 256.0 / 100.0); |
| } |
| |
| if (value >= 255.0) |
| return 255; |
| |
| return static_cast<int>(value); |
| } |
| |
| bool CSSPropertyParser::parseColorParameters(const CSSParserValue* value, int* colorArray, bool parseAlpha) |
| { |
| CSSParserValueList* args = value->function->args.get(); |
| CSSParserValue* v = args->current(); |
| Units unitType = FUnknown; |
| // Get the first value and its type |
| if (validUnit(v, FInteger)) |
| unitType = FInteger; |
| else if (validUnit(v, FPercent)) |
| unitType = FPercent; |
| else |
| return false; |
| |
| colorArray[0] = colorIntFromValue(v); |
| for (int i = 1; i < 3; i++) { |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| v = args->current(); |
| if (!validUnit(v, unitType)) |
| return false; |
| colorArray[i] = colorIntFromValue(v); |
| } |
| if (parseAlpha) { |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| v = args->current(); |
| if (!validUnit(v, FNumber)) |
| return false; |
| // Convert the floating pointer number of alpha to an integer in the range [0, 256), |
| // with an equal distribution across all 256 values. |
| colorArray[3] = static_cast<int>(std::max(0.0, std::min(1.0, v->fValue)) * nextafter(256.0, 0.0)); |
| } |
| return true; |
| } |
| |
| // The CSS3 specification defines the format of a HSL color as |
| // hsl(<number>, <percent>, <percent>) |
| // and with alpha, the format is |
| // hsla(<number>, <percent>, <percent>, <number>) |
| // The first value, HUE, is in an angle with a value between 0 and 360 |
| bool CSSPropertyParser::parseHSLParameters(const CSSParserValue* value, double* colorArray, bool parseAlpha) |
| { |
| CSSParserValueList* args = value->function->args.get(); |
| CSSParserValue* v = args->current(); |
| // Get the first value |
| if (!validUnit(v, FNumber)) |
| return false; |
| // normalize the Hue value and change it to be between 0 and 1.0 |
| colorArray[0] = (((static_cast<int>(v->fValue) % 360) + 360) % 360) / 360.0; |
| for (int i = 1; i < 3; i++) { |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| v = args->current(); |
| if (!validUnit(v, FPercent)) |
| return false; |
| double percentValue = m_parsedCalculation ? m_parsedCalculation.release()->doubleValue() : v->fValue; |
| colorArray[i] = std::max(0.0, std::min(100.0, percentValue)) / 100.0; // needs to be value between 0 and 1.0 |
| } |
| if (parseAlpha) { |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| v = args->current(); |
| if (!validUnit(v, FNumber)) |
| return false; |
| colorArray[3] = std::max(0.0, std::min(1.0, v->fValue)); |
| } |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseColorFromValue(const CSSParserValue* value, RGBA32& result, bool acceptQuirkyColors) |
| { |
| if (acceptQuirkyColors && value->unit() == CSSPrimitiveValue::UnitType::Number |
| && value->fValue >= 0. && value->fValue < 1000000. && value->isInt) { |
| String str = String::format("%06d", static_cast<int>(value->fValue)); |
| return Color::parseHexColor(str, result); |
| } |
| if (acceptQuirkyColors && value->m_unit == CSSParserValue::DimensionList) { |
| CSSParserValue* numberToken = value->valueList->valueAt(0); |
| CSSParserValue* unitToken = value->valueList->valueAt(1); |
| ASSERT(numberToken->unit() == CSSPrimitiveValue::UnitType::Number); |
| ASSERT(unitToken->m_unit == CSSParserValue::Identifier); |
| if (!numberToken->isInt || numberToken->fValue < 0) |
| return false; |
| String color = String::number(numberToken->fValue) + String(unitToken->string); |
| if (color.length() > 6) |
| return false; |
| while (color.length() < 6) |
| color = "0" + color; |
| return Color::parseHexColor(color, result); |
| } |
| if (value->m_unit == CSSParserValue::Identifier) { |
| Color color; |
| if (!color.setNamedColor(value->string)) |
| return acceptQuirkyColors && Color::parseHexColor(value->string, result); |
| result = color.rgb(); |
| return true; |
| } |
| if (value->m_unit == CSSParserValue::HexColor) { |
| if (value->string.is8Bit()) |
| return Color::parseHexColor(value->string.characters8(), value->string.length(), result); |
| return Color::parseHexColor(value->string.characters16(), value->string.length(), result); |
| } |
| |
| if (value->m_unit == CSSParserValue::Function |
| && value->function->args != 0 |
| && value->function->args->size() == 5 /* rgb + two commas */ |
| && value->function->id == CSSValueRgb) { |
| int colorValues[3]; |
| if (!parseColorParameters(value, colorValues, false)) |
| return false; |
| result = makeRGB(colorValues[0], colorValues[1], colorValues[2]); |
| } else { |
| if (value->m_unit == CSSParserValue::Function |
| && value->function->args != 0 |
| && value->function->args->size() == 7 /* rgba + three commas */ |
| && value->function->id == CSSValueRgba) { |
| int colorValues[4]; |
| if (!parseColorParameters(value, colorValues, true)) |
| return false; |
| result = makeRGBA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]); |
| } else if (value->m_unit == CSSParserValue::Function |
| && value->function->args != 0 |
| && value->function->args->size() == 5 /* hsl + two commas */ |
| && value->function->id == CSSValueHsl) { |
| double colorValues[3]; |
| if (!parseHSLParameters(value, colorValues, false)) |
| return false; |
| result = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], 1.0); |
| } else if (value->m_unit == CSSParserValue::Function |
| && value->function->args != 0 |
| && value->function->args->size() == 7 /* hsla + three commas */ |
| && value->function->id == CSSValueHsla) { |
| double colorValues[4]; |
| if (!parseHSLParameters(value, colorValues, true)) |
| return false; |
| result = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]); |
| } else { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseReflect() |
| { |
| // box-reflect: <direction> <offset> <mask> |
| |
| // Direction comes first. |
| CSSParserValue* val = m_valueList->current(); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> direction = nullptr; |
| switch (val->id) { |
| case CSSValueAbove: |
| case CSSValueBelow: |
| case CSSValueLeft: |
| case CSSValueRight: |
| direction = cssValuePool().createIdentifierValue(val->id); |
| break; |
| default: |
| return nullptr; |
| } |
| |
| // The offset comes next. |
| val = m_valueList->next(); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> offset = nullptr; |
| if (!val) |
| offset = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Pixels); |
| else { |
| if (!validUnit(val, FLength | FPercent)) |
| return nullptr; |
| offset = createPrimitiveNumericValue(val); |
| } |
| |
| // Now for the mask. |
| RefPtrWillBeRawPtr<CSSValue> mask = nullptr; |
| val = m_valueList->next(); |
| if (val) { |
| mask = parseBorderImage(CSSPropertyWebkitBoxReflect); |
| if (!mask) |
| return nullptr; |
| } |
| |
| return CSSReflectValue::create(direction.release(), offset.release(), mask.release()); |
| } |
| |
| static bool isFlexBasisMiddleArg(double flexGrow, double flexShrink, double unsetValue, int argSize) |
| { |
| return flexGrow != unsetValue && flexShrink == unsetValue && argSize == 3; |
| } |
| |
| bool CSSPropertyParser::parseFlex(CSSParserValueList* args, bool important) |
| { |
| if (!args || !args->size() || args->size() > 3) |
| return false; |
| static const double unsetValue = -1; |
| double flexGrow = unsetValue; |
| double flexShrink = unsetValue; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> flexBasis = nullptr; |
| |
| while (CSSParserValue* arg = args->current()) { |
| if (validUnit(arg, FNumber | FNonNeg)) { |
| if (flexGrow == unsetValue) |
| flexGrow = arg->fValue; |
| else if (flexShrink == unsetValue) |
| flexShrink = arg->fValue; |
| else if (!arg->fValue) { |
| // flex only allows a basis of 0 (sans units) if flex-grow and flex-shrink values have already been set. |
| flexBasis = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Pixels); |
| } else { |
| // We only allow 3 numbers without units if the last value is 0. E.g., flex:1 1 1 is invalid. |
| return false; |
| } |
| } else if (!flexBasis && (arg->id == CSSValueAuto || validUnit(arg, FLength | FPercent | FNonNeg)) && !isFlexBasisMiddleArg(flexGrow, flexShrink, unsetValue, args->size())) |
| flexBasis = parseValidPrimitive(arg->id, arg); |
| else { |
| // Not a valid arg for flex. |
| return false; |
| } |
| args->next(); |
| } |
| |
| if (flexGrow == unsetValue) |
| flexGrow = 1; |
| if (flexShrink == unsetValue) |
| flexShrink = 1; |
| if (!flexBasis) |
| flexBasis = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Percentage); |
| |
| addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(clampTo<float>(flexGrow), CSSPrimitiveValue::UnitType::Number), important); |
| addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(clampTo<float>(flexShrink), CSSPrimitiveValue::UnitType::Number), important); |
| addProperty(CSSPropertyFlexBasis, flexBasis, important); |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parsePosition(CSSParserValueList* valueList) |
| { |
| RefPtrWillBeRawPtr<CSSValue> xValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> yValue = nullptr; |
| parseFillPosition(valueList, xValue, yValue); |
| if (!xValue || !yValue) |
| return nullptr; |
| return CSSValuePair::create(xValue.release(), yValue.release(), CSSValuePair::KeepIdenticalValues); |
| } |
| |
| // Parses a list of comma separated positions. i.e., <position># |
| PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parsePositionList(CSSParserValueList* valueList) |
| { |
| RefPtrWillBeRawPtr<CSSValueList> positions = CSSValueList::createCommaSeparated(); |
| while (true) { |
| // parsePosition consumes values until it reaches a separator [,/], |
| // an invalid token, or end of the list |
| RefPtrWillBeRawPtr<CSSValue> position = parsePosition(valueList); |
| if (!position) |
| return nullptr; |
| positions->append(position); |
| |
| if (!valueList->current()) |
| break; |
| if (!consumeComma(valueList) || !valueList->current()) |
| return nullptr; |
| } |
| |
| return positions.release(); |
| } |
| |
| class BorderImageParseContext { |
| STACK_ALLOCATED(); |
| public: |
| BorderImageParseContext() |
| : m_canAdvance(false) |
| , m_allowCommit(true) |
| , m_allowImage(true) |
| , m_allowImageSlice(true) |
| , m_allowRepeat(true) |
| , m_allowForwardSlashOperator(false) |
| , m_allowWidth(false) |
| , m_requireOutset(false) |
| {} |
| |
| bool canAdvance() const { return m_canAdvance; } |
| void setCanAdvance(bool canAdvance) { m_canAdvance = canAdvance; } |
| |
| bool allowCommit() const { return m_allowCommit; } |
| bool allowImage() const { return m_allowImage; } |
| bool allowImageSlice() const { return m_allowImageSlice; } |
| bool allowRepeat() const { return m_allowRepeat; } |
| bool allowForwardSlashOperator() const { return m_allowForwardSlashOperator; } |
| |
| bool allowWidth() const { return m_allowWidth; } |
| bool requireOutset() const { return m_requireOutset; } |
| |
| void commitImage(PassRefPtrWillBeRawPtr<CSSValue> image) |
| { |
| m_image = image; |
| m_canAdvance = true; |
| m_allowCommit = true; |
| m_allowImage = false; |
| m_allowForwardSlashOperator = false; |
| m_allowWidth = false; |
| m_requireOutset = false; |
| m_allowImageSlice = !m_imageSlice; |
| m_allowRepeat = !m_repeat; |
| } |
| void commitImageSlice(PassRefPtrWillBeRawPtr<CSSBorderImageSliceValue> slice) |
| { |
| m_imageSlice = slice; |
| m_canAdvance = true; |
| m_allowCommit = true; |
| m_allowForwardSlashOperator = true; |
| m_allowImageSlice = false; |
| m_allowWidth = false; |
| m_requireOutset = false; |
| m_allowImage = !m_image; |
| m_allowRepeat = !m_repeat; |
| } |
| void commitForwardSlashOperator() |
| { |
| m_canAdvance = true; |
| m_allowCommit = false; |
| m_allowImage = false; |
| m_allowImageSlice = false; |
| m_allowRepeat = false; |
| if (!m_borderWidth && !m_allowWidth) { |
| m_allowForwardSlashOperator = true; |
| m_allowWidth = true; |
| m_requireOutset = false; |
| } else { |
| m_allowForwardSlashOperator = false; |
| m_requireOutset = true; |
| m_allowWidth = false; |
| } |
| } |
| void commitBorderWidth(PassRefPtrWillBeRawPtr<CSSQuadValue> width) |
| { |
| m_borderWidth = width; |
| m_canAdvance = true; |
| m_allowCommit = true; |
| m_allowForwardSlashOperator = true; |
| m_allowImageSlice = false; |
| m_allowWidth = false; |
| m_requireOutset = false; |
| m_allowImage = !m_image; |
| m_allowRepeat = !m_repeat; |
| } |
| void commitBorderOutset(PassRefPtrWillBeRawPtr<CSSQuadValue> outset) |
| { |
| m_outset = outset; |
| m_canAdvance = true; |
| m_allowCommit = true; |
| m_allowImageSlice = false; |
| m_allowForwardSlashOperator = false; |
| m_allowWidth = false; |
| m_requireOutset = false; |
| m_allowImage = !m_image; |
| m_allowRepeat = !m_repeat; |
| } |
| void commitRepeat(PassRefPtrWillBeRawPtr<CSSValue> repeat) |
| { |
| m_repeat = repeat; |
| m_canAdvance = true; |
| m_allowCommit = true; |
| m_allowRepeat = false; |
| m_allowForwardSlashOperator = false; |
| m_allowWidth = false; |
| m_requireOutset = false; |
| m_allowImageSlice = !m_imageSlice; |
| m_allowImage = !m_image; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> commitCSSValue() |
| { |
| return createBorderImageValue(m_image, m_imageSlice.get(), m_borderWidth.get(), m_outset.get(), m_repeat.get()); |
| } |
| |
| bool m_canAdvance; |
| |
| bool m_allowCommit; |
| bool m_allowImage; |
| bool m_allowImageSlice; |
| bool m_allowRepeat; |
| bool m_allowForwardSlashOperator; |
| |
| bool m_allowWidth; |
| bool m_requireOutset; |
| |
| RefPtrWillBeMember<CSSValue> m_image; |
| RefPtrWillBeMember<CSSBorderImageSliceValue> m_imageSlice; |
| RefPtrWillBeMember<CSSQuadValue> m_borderWidth; |
| RefPtrWillBeMember<CSSQuadValue> m_outset; |
| |
| RefPtrWillBeMember<CSSValue> m_repeat; |
| }; |
| |
| bool CSSPropertyParser::buildBorderImageParseContext(CSSPropertyID propId, BorderImageParseContext& context) |
| { |
| CSSPropertyParser::ShorthandScope scope(this, propId); |
| while (CSSParserValue* val = m_valueList->current()) { |
| context.setCanAdvance(false); |
| |
| if (!context.canAdvance() && context.allowForwardSlashOperator() && isForwardSlashOperator(val)) |
| context.commitForwardSlashOperator(); |
| |
| if (!context.canAdvance() && context.allowImage()) { |
| if (val->m_unit == CSSParserValue::URI) { |
| context.commitImage(createCSSImageValueWithReferrer(val->string, m_context.completeURL(val->string))); |
| } else if (isGeneratedImageValue(val)) { |
| RefPtrWillBeRawPtr<CSSValue> value = nullptr; |
| if (parseGeneratedImage(m_valueList, value)) |
| context.commitImage(value.release()); |
| else |
| return false; |
| } else if (val->m_unit == CSSParserValue::Function && val->function->id == CSSValueWebkitImageSet) { |
| RefPtrWillBeRawPtr<CSSValue> value = parseImageSet(m_valueList); |
| if (value) |
| context.commitImage(value.release()); |
| else |
| return false; |
| } else if (val->id == CSSValueNone) |
| context.commitImage(cssValuePool().createIdentifierValue(CSSValueNone)); |
| } |
| |
| if (!context.canAdvance() && context.allowImageSlice()) { |
| RefPtrWillBeRawPtr<CSSBorderImageSliceValue> imageSlice = nullptr; |
| if (parseBorderImageSlice(propId, imageSlice)) |
| context.commitImageSlice(imageSlice.release()); |
| } |
| |
| if (!context.canAdvance() && context.allowRepeat()) { |
| RefPtrWillBeRawPtr<CSSValue> repeat = nullptr; |
| if (parseBorderImageRepeat(repeat)) |
| context.commitRepeat(repeat.release()); |
| } |
| |
| if (!context.canAdvance() && context.allowWidth()) { |
| RefPtrWillBeRawPtr<CSSQuadValue> borderWidth = nullptr; |
| if (parseBorderImageWidth(borderWidth)) |
| context.commitBorderWidth(borderWidth.release()); |
| } |
| |
| if (!context.canAdvance() && context.requireOutset()) { |
| RefPtrWillBeRawPtr<CSSQuadValue> borderOutset = nullptr; |
| if (parseBorderImageOutset(borderOutset)) |
| context.commitBorderOutset(borderOutset.release()); |
| } |
| |
| if (!context.canAdvance()) |
| return false; |
| |
| m_valueList->next(); |
| } |
| |
| return context.allowCommit(); |
| } |
| |
| void CSSPropertyParser::commitBorderImageProperty(CSSPropertyID propId, PassRefPtrWillBeRawPtr<CSSValue> value, bool important) |
| { |
| if (value) |
| addProperty(propId, value, important); |
| else |
| addProperty(propId, cssValuePool().createImplicitInitialValue(), important, true); |
| } |
| |
| bool CSSPropertyParser::parseBorderImageShorthand(CSSPropertyID propId, bool important) |
| { |
| BorderImageParseContext context; |
| if (buildBorderImageParseContext(propId, context)) { |
| switch (propId) { |
| case CSSPropertyWebkitMaskBoxImage: |
| commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageSource, context.m_image, important); |
| commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageSlice, context.m_imageSlice.get(), important); |
| commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageWidth, context.m_borderWidth.get(), important); |
| commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageOutset, context.m_outset.get(), important); |
| commitBorderImageProperty(CSSPropertyWebkitMaskBoxImageRepeat, context.m_repeat.get(), important); |
| return true; |
| case CSSPropertyBorderImage: |
| commitBorderImageProperty(CSSPropertyBorderImageSource, context.m_image, important); |
| commitBorderImageProperty(CSSPropertyBorderImageSlice, context.m_imageSlice.get(), important); |
| commitBorderImageProperty(CSSPropertyBorderImageWidth, context.m_borderWidth.get(), important); |
| commitBorderImageProperty(CSSPropertyBorderImageOutset, context.m_outset.get(), important); |
| commitBorderImageProperty(CSSPropertyBorderImageRepeat, context.m_repeat, important); |
| return true; |
| default: |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseBorderImage(CSSPropertyID propId) |
| { |
| BorderImageParseContext context; |
| if (buildBorderImageParseContext(propId, context)) { |
| return context.commitCSSValue(); |
| } |
| return nullptr; |
| } |
| |
| static bool isBorderImageRepeatKeyword(int id) |
| { |
| return id == CSSValueStretch || id == CSSValueRepeat || id == CSSValueSpace || id == CSSValueRound; |
| } |
| |
| bool CSSPropertyParser::parseBorderImageRepeat(RefPtrWillBeRawPtr<CSSValue>& result) |
| { |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> firstValue = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> secondValue = nullptr; |
| CSSParserValue* val = m_valueList->current(); |
| if (!val) |
| return false; |
| if (isBorderImageRepeatKeyword(val->id)) |
| firstValue = cssValuePool().createIdentifierValue(val->id); |
| else |
| return false; |
| |
| val = m_valueList->next(); |
| if (val) { |
| if (isBorderImageRepeatKeyword(val->id)) |
| secondValue = cssValuePool().createIdentifierValue(val->id); |
| else if (!inShorthand()) { |
| // If we're not parsing a shorthand then we are invalid. |
| return false; |
| } else { |
| // We need to rewind the value list, so that when its advanced we'll |
| // end up back at this value. |
| m_valueList->previous(); |
| secondValue = firstValue; |
| } |
| } else |
| secondValue = firstValue; |
| |
| result = CSSValuePair::create(firstValue, secondValue, CSSValuePair::DropIdenticalValues); |
| return true; |
| } |
| |
| class BorderImageSliceParseContext { |
| STACK_ALLOCATED(); |
| public: |
| BorderImageSliceParseContext() |
| : m_allowNumber(true) |
| , m_allowFill(true) |
| , m_allowFinalCommit(false) |
| , m_fill(false) |
| { } |
| |
| bool allowNumber() const { return m_allowNumber; } |
| bool allowFill() const { return m_allowFill; } |
| bool allowFinalCommit() const { return m_allowFinalCommit; } |
| CSSPrimitiveValue* top() const { return m_top.get(); } |
| |
| void commitNumber(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> val) |
| { |
| if (!m_top) |
| m_top = val; |
| else if (!m_right) |
| m_right = val; |
| else if (!m_bottom) |
| m_bottom = val; |
| else { |
| ASSERT(!m_left); |
| m_left = val; |
| } |
| |
| m_allowNumber = !m_left; |
| m_allowFinalCommit = true; |
| } |
| |
| void commitFill() { m_fill = true; m_allowFill = false; m_allowNumber = !m_top; } |
| |
| PassRefPtrWillBeRawPtr<CSSBorderImageSliceValue> commitBorderImageSlice() |
| { |
| // We need to clone and repeat values for any omissions. |
| ASSERT(m_top); |
| if (!m_right) { |
| m_right = m_top; |
| m_bottom = m_top; |
| m_left = m_top; |
| } |
| if (!m_bottom) { |
| m_bottom = m_top; |
| m_left = m_right; |
| } |
| if (!m_left) |
| m_left = m_right; |
| |
| return CSSBorderImageSliceValue::create(CSSQuadValue::create(m_top.release(), m_right.release(), m_bottom.release(), m_left.release(), CSSQuadValue::SerializeAsQuad), m_fill); |
| } |
| |
| private: |
| bool m_allowNumber; |
| bool m_allowFill; |
| bool m_allowFinalCommit; |
| |
| RefPtrWillBeMember<CSSPrimitiveValue> m_top; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_right; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_bottom; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_left; |
| |
| bool m_fill; |
| }; |
| |
| bool CSSPropertyParser::parseBorderImageSlice(CSSPropertyID propId, RefPtrWillBeRawPtr<CSSBorderImageSliceValue>& result) |
| { |
| BorderImageSliceParseContext context; |
| for (CSSParserValue* val = m_valueList->current(); val; val = m_valueList->next()) { |
| // FIXME calc() http://webkit.org/b/16662 : calc is parsed but values are not created yet. |
| if (context.allowNumber() && !isCalculation(val) && validUnit(val, FInteger | FNonNeg | FPercent)) { |
| context.commitNumber(createPrimitiveNumericValue(val)); |
| } else if (context.allowFill() && val->id == CSSValueFill) { |
| context.commitFill(); |
| } else if (!inShorthand()) { |
| // If we're not parsing a shorthand then we are invalid. |
| return false; |
| } else { |
| if (context.allowFinalCommit()) { |
| // We're going to successfully parse, but we don't want to consume this token. |
| m_valueList->previous(); |
| } |
| break; |
| } |
| } |
| |
| if (context.allowFinalCommit()) { |
| // FIXME: For backwards compatibility, -webkit-border-image, -webkit-mask-box-image and -webkit-box-reflect have to do a fill by default. |
| // FIXME: What do we do with -webkit-box-reflect and -webkit-mask-box-image? Probably just have to leave them filling... |
| if (propId == CSSPropertyWebkitBorderImage || propId == CSSPropertyWebkitMaskBoxImage || propId == CSSPropertyWebkitBoxReflect) |
| context.commitFill(); |
| |
| // Need to fully commit as a single value. |
| result = context.commitBorderImageSlice(); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| class BorderImageQuadParseContext { |
| STACK_ALLOCATED(); |
| public: |
| BorderImageQuadParseContext() |
| : m_allowNumber(true) |
| , m_allowFinalCommit(false) |
| { } |
| |
| bool allowNumber() const { return m_allowNumber; } |
| bool allowFinalCommit() const { return m_allowFinalCommit; } |
| CSSPrimitiveValue* top() const { return m_top.get(); } |
| |
| void commitNumber(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> val) |
| { |
| if (!m_top) |
| m_top = val; |
| else if (!m_right) |
| m_right = val; |
| else if (!m_bottom) |
| m_bottom = val; |
| else { |
| ASSERT(!m_left); |
| m_left = val; |
| } |
| |
| m_allowNumber = !m_left; |
| m_allowFinalCommit = true; |
| } |
| |
| void setTop(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> val) { m_top = val; } |
| |
| PassRefPtrWillBeRawPtr<CSSQuadValue> commitBorderImageQuad() |
| { |
| // We need to clone and repeat values for any omissions. |
| ASSERT(m_top); |
| if (!m_right) { |
| m_right = m_top; |
| m_bottom = m_top; |
| m_left = m_top; |
| } |
| if (!m_bottom) { |
| m_bottom = m_top; |
| m_left = m_right; |
| } |
| if (!m_left) |
| m_left = m_right; |
| |
| return CSSQuadValue::create(m_top.release(), m_right.release(), m_bottom.release(), m_left.release(), CSSQuadValue::SerializeAsQuad); |
| } |
| |
| private: |
| bool m_allowNumber; |
| bool m_allowFinalCommit; |
| |
| RefPtrWillBeMember<CSSPrimitiveValue> m_top; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_right; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_bottom; |
| RefPtrWillBeMember<CSSPrimitiveValue> m_left; |
| }; |
| |
| bool CSSPropertyParser::parseBorderImageQuad(Units validUnits, RefPtrWillBeRawPtr<CSSQuadValue>& result) |
| { |
| BorderImageQuadParseContext context; |
| for (CSSParserValue* val = m_valueList->current(); val; val = m_valueList->next()) { |
| if (context.allowNumber() && (validUnit(val, validUnits, HTMLStandardMode) || val->id == CSSValueAuto)) { |
| if (val->id == CSSValueAuto) |
| context.commitNumber(cssValuePool().createIdentifierValue(val->id)); |
| else |
| context.commitNumber(createPrimitiveNumericValue(val)); |
| } else if (!inShorthand()) { |
| // If we're not parsing a shorthand then we are invalid. |
| return false; |
| } else { |
| if (context.allowFinalCommit()) |
| m_valueList->previous(); // The shorthand loop will advance back to this point. |
| break; |
| } |
| } |
| |
| if (context.allowFinalCommit()) { |
| // Need to fully commit as a single value. |
| result = context.commitBorderImageQuad(); |
| return true; |
| } |
| return false; |
| } |
| |
| bool CSSPropertyParser::parseBorderImageWidth(RefPtrWillBeRawPtr<CSSQuadValue>& result) |
| { |
| return parseBorderImageQuad(FLength | FNumber | FNonNeg | FPercent, result); |
| } |
| |
| bool CSSPropertyParser::parseBorderImageOutset(RefPtrWillBeRawPtr<CSSQuadValue>& result) |
| { |
| return parseBorderImageQuad(FLength | FNumber | FNonNeg, result); |
| } |
| |
| bool CSSPropertyParser::parseBorderRadius(CSSPropertyID unresolvedProperty, bool important) |
| { |
| unsigned num = m_valueList->size(); |
| if (num > 9) |
| return false; |
| |
| ShorthandScope scope(this, unresolvedProperty); |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> radii[2][4]; |
| #if ENABLE(OILPAN) |
| // Zero initialize the array of raw pointers. |
| memset(&radii, 0, sizeof(radii)); |
| #endif |
| |
| unsigned indexAfterSlash = 0; |
| for (unsigned i = 0; i < num; ++i) { |
| CSSParserValue* value = m_valueList->valueAt(i); |
| if (value->m_unit == CSSParserValue::Operator) { |
| if (value->iValue != '/') |
| return false; |
| |
| if (!i || indexAfterSlash || i + 1 == num || num > i + 5) |
| return false; |
| |
| indexAfterSlash = i + 1; |
| completeBorderRadii(radii[0]); |
| continue; |
| } |
| |
| if (i - indexAfterSlash >= 4) |
| return false; |
| |
| if (!validUnit(value, FLength | FPercent | FNonNeg)) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> radius = createPrimitiveNumericValue(value); |
| |
| if (!indexAfterSlash) { |
| radii[0][i] = radius; |
| |
| // Legacy syntax: -webkit-border-radius: l1 l2; is equivalent to border-radius: l1 / l2; |
| if (num == 2 && unresolvedProperty == CSSPropertyAliasWebkitBorderRadius) { |
| indexAfterSlash = 1; |
| completeBorderRadii(radii[0]); |
| } |
| } else |
| radii[1][i - indexAfterSlash] = radius.release(); |
| } |
| |
| if (!indexAfterSlash) { |
| completeBorderRadii(radii[0]); |
| for (unsigned i = 0; i < 4; ++i) |
| radii[1][i] = radii[0][i]; |
| } else |
| completeBorderRadii(radii[1]); |
| |
| ImplicitScope implicitScope(this); |
| addProperty(CSSPropertyBorderTopLeftRadius, CSSValuePair::create(radii[0][0].release(), radii[1][0].release(), CSSValuePair::DropIdenticalValues), important); |
| addProperty(CSSPropertyBorderTopRightRadius, CSSValuePair::create(radii[0][1].release(), radii[1][1].release(), CSSValuePair::DropIdenticalValues), important); |
| addProperty(CSSPropertyBorderBottomRightRadius, CSSValuePair::create(radii[0][2].release(), radii[1][2].release(), CSSValuePair::DropIdenticalValues), important); |
| addProperty(CSSPropertyBorderBottomLeftRadius, CSSValuePair::create(radii[0][3].release(), radii[1][3].release(), CSSValuePair::DropIdenticalValues), important); |
| return true; |
| } |
| |
| // This should go away once we drop support for -webkit-gradient |
| static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> parseDeprecatedGradientPoint(CSSParserValue* a, bool horizontal) |
| { |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> result = nullptr; |
| if (a->m_unit == CSSParserValue::Identifier) { |
| if ((a->id == CSSValueLeft && horizontal) |
| || (a->id == CSSValueTop && !horizontal)) |
| result = cssValuePool().createValue(0., CSSPrimitiveValue::UnitType::Percentage); |
| else if ((a->id == CSSValueRight && horizontal) |
| || (a->id == CSSValueBottom && !horizontal)) |
| result = cssValuePool().createValue(100., CSSPrimitiveValue::UnitType::Percentage); |
| else if (a->id == CSSValueCenter) |
| result = cssValuePool().createValue(50., CSSPrimitiveValue::UnitType::Percentage); |
| } else if (a->unit() == CSSPrimitiveValue::UnitType::Number || a->unit() == CSSPrimitiveValue::UnitType::Percentage) { |
| result = cssValuePool().createValue(a->fValue, a->unit()); |
| } |
| return result; |
| } |
| |
| // Used to parse colors for -webkit-gradient(...). |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseDeprecatedGradientStopColor(const CSSParserValue* value) |
| { |
| // Disallow currentcolor. |
| if (value->id == CSSValueCurrentcolor) |
| return nullptr; |
| return parseColor(value); |
| } |
| |
| bool CSSPropertyParser::parseDeprecatedGradientColorStop(CSSParserValue* a, CSSGradientColorStop& stop) |
| { |
| if (a->m_unit != CSSParserValue::Function) |
| return false; |
| |
| if (a->function->id != CSSValueFrom |
| && a->function->id != CSSValueTo |
| && a->function->id != CSSValueColorStop) |
| return false; |
| |
| CSSParserValueList* args = a->function->args.get(); |
| if (!args) |
| return false; |
| |
| if (a->function->id == CSSValueFrom || a->function->id == CSSValueTo) { |
| // The "from" and "to" stops expect 1 argument. |
| if (args->size() != 1) |
| return false; |
| |
| if (a->function->id == CSSValueFrom) |
| stop.m_position = cssValuePool().createValue(0, CSSPrimitiveValue::UnitType::Number); |
| else |
| stop.m_position = cssValuePool().createValue(1, CSSPrimitiveValue::UnitType::Number); |
| |
| stop.m_color = parseDeprecatedGradientStopColor(args->current()); |
| if (!stop.m_color) |
| return false; |
| } |
| |
| // The "color-stop" function expects 3 arguments. |
| if (a->function->id == CSSValueColorStop) { |
| if (args->size() != 3) |
| return false; |
| |
| CSSParserValue* stopArg = args->current(); |
| if (stopArg->unit() == CSSPrimitiveValue::UnitType::Percentage) |
| stop.m_position = cssValuePool().createValue(stopArg->fValue / 100, CSSPrimitiveValue::UnitType::Number); |
| else if (stopArg->unit() == CSSPrimitiveValue::UnitType::Number) |
| stop.m_position = cssValuePool().createValue(stopArg->fValue, CSSPrimitiveValue::UnitType::Number); |
| else |
| return false; |
| |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| |
| stop.m_color = parseDeprecatedGradientStopColor(args->current()); |
| if (!stop.m_color) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseDeprecatedGradient(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& gradient) |
| { |
| // Walk the arguments. |
| CSSParserValueList* args = valueList->current()->function->args.get(); |
| if (!args || args->size() == 0) |
| return false; |
| |
| // The first argument is the gradient type. It is an identifier. |
| CSSGradientType gradientType; |
| CSSParserValue* a = args->current(); |
| if (!a || a->m_unit != CSSParserValue::Identifier) |
| return false; |
| if (a->id == CSSValueLinear) |
| gradientType = CSSDeprecatedLinearGradient; |
| else if (a->id == CSSValueRadial) |
| gradientType = CSSDeprecatedRadialGradient; |
| else |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSGradientValue> result = nullptr; |
| switch (gradientType) { |
| case CSSDeprecatedLinearGradient: |
| result = CSSLinearGradientValue::create(NonRepeating, gradientType); |
| break; |
| case CSSDeprecatedRadialGradient: |
| result = CSSRadialGradientValue::create(NonRepeating, gradientType); |
| break; |
| default: |
| // The rest of the gradient types shouldn't appear here. |
| ASSERT_NOT_REACHED(); |
| } |
| args->next(); |
| |
| if (!consumeComma(args)) |
| return false; |
| |
| // Next comes the starting point for the gradient as an x y pair. There is no |
| // comma between the x and the y values. |
| // First X. It can be left, right, number or percent. |
| a = args->current(); |
| if (!a) |
| return false; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> point = parseDeprecatedGradientPoint(a, true); |
| if (!point) |
| return false; |
| result->setFirstX(point.release()); |
| |
| // First Y. It can be top, bottom, number or percent. |
| a = args->next(); |
| if (!a) |
| return false; |
| point = parseDeprecatedGradientPoint(a, false); |
| if (!point) |
| return false; |
| result->setFirstY(point.release()); |
| |
| // Comma after the first point. |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| |
| // For radial gradients only, we now expect a numeric radius. |
| if (gradientType == CSSDeprecatedRadialGradient) { |
| a = args->current(); |
| if (!a || a->unit() != CSSPrimitiveValue::UnitType::Number) |
| return false; |
| toCSSRadialGradientValue(result.get())->setFirstRadius(createPrimitiveNumericValue(a)); |
| |
| // Comma after the first radius. |
| args->next(); |
| if (!consumeComma(args)) |
| return false; |
| } |
| |
| // Next is the ending point for the gradient as an x, y pair. |
| // Second X. It can be left, right, number or percent. |
| a = args->current(); |
| if (!a) |
| return false; |
| point = parseDeprecatedGradientPoint(a, true); |
| if (!point) |
| return false; |
| result->setSecondX(point.release()); |
| |
| // Second Y. It can be top, bottom, number or percent. |
| a = args->next(); |
| if (!a) |
| return false; |
| point = parseDeprecatedGradientPoint(a, false); |
| if (!point) |
| return false; |
| result->setSecondY(point.release()); |
| args->next(); |
| |
| // For radial gradients only, we now expect the second radius. |
| if (gradientType == CSSDeprecatedRadialGradient) { |
| // Comma after the second point. |
| if (!consumeComma(args)) |
| return false; |
| |
| a = args->current(); |
| if (!a || a->unit() != CSSPrimitiveValue::UnitType::Number) |
| return false; |
| toCSSRadialGradientValue(result.get())->setSecondRadius(createPrimitiveNumericValue(a)); |
| args->next(); |
| } |
| |
| // We now will accept any number of stops (0 or more). |
| a = args->current(); |
| while (a) { |
| // Look for the comma before the next stop. |
| if (!consumeComma(args)) |
| return false; |
| |
| // Now examine the stop itself. |
| a = args->current(); |
| if (!a) |
| return false; |
| |
| // The function name needs to be one of "from", "to", or "color-stop." |
| CSSGradientColorStop stop; |
| if (!parseDeprecatedGradientColorStop(a, stop)) |
| return false; |
| result->addStop(stop); |
| |
| // Advance |
| a = args->next(); |
| } |
| |
| gradient = result.release(); |
| return true; |
| } |
| |
| static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> valueFromSideKeyword(CSSParserValue* a, bool& isHorizontal) |
| { |
| if (a->m_unit != CSSParserValue::Identifier) |
| return nullptr; |
| |
| switch (a->id) { |
| case CSSValueLeft: |
| case CSSValueRight: |
| isHorizontal = true; |
| break; |
| case CSSValueTop: |
| case CSSValueBottom: |
| isHorizontal = false; |
| break; |
| default: |
| return nullptr; |
| } |
| return cssValuePool().createIdentifierValue(a->id); |
| } |
| |
| bool CSSPropertyParser::parseDeprecatedLinearGradient(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& gradient, CSSGradientRepeat repeating) |
| { |
| RefPtrWillBeRawPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repeating, CSSPrefixedLinearGradient); |
| |
| // Walk the arguments. |
| CSSParserValueList* args = valueList->current()->function->args.get(); |
| if (!args || !args->size()) |
| return false; |
| |
| CSSParserValue* a = args->current(); |
| if (!a) |
| return false; |
| |
| bool expectComma = false; |
| // Look for angle. |
| if (validUnit(a, FAngle, HTMLStandardMode)) { |
| result->setAngle(createPrimitiveNumericValue(a)); |
| |
| args->next(); |
| expectComma = true; |
| } else { |
| // Look one or two optional keywords that indicate a side or corner. |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> startX = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> startY = nullptr; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> location = nullptr; |
| bool isHorizontal = false; |
| if ((location = valueFromSideKeyword(a, isHorizontal))) { |
| if (isHorizontal) |
| startX = location; |
| else |
| startY = location; |
| |
| a = args->next(); |
| if (a) { |
| if ((location = valueFromSideKeyword(a, isHorizontal))) { |
| if (isHorizontal) { |
| if (startX) |
| return false; |
| startX = location; |
| } else { |
| if (startY) |
| return false; |
| startY = location; |
| } |
| |
| args->next(); |
| } |
| } |
| |
| expectComma = true; |
| } |
| |
| if (!startX && !startY) |
| startY = cssValuePool().createIdentifierValue(CSSValueTop); |
| |
| result->setFirstX(startX.release()); |
| result->setFirstY(startY.release()); |
| } |
| |
| if (!parseGradientColorStops(args, result.get(), expectComma)) |
| return false; |
| |
| if (!result->stopCount()) |
| return false; |
| |
| gradient = result.release(); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseDeprecatedRadialGradient(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& gradient, CSSGradientRepeat repeating) |
| { |
| RefPtrWillBeRawPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repeating, CSSPrefixedRadialGradient); |
| |
| // Walk the arguments. |
| CSSParserValueList* args = valueList->current()->function->args.get(); |
| if (!args || !args->size()) |
| return false; |
| |
| CSSParserValue* a = args->current(); |
| if (!a) |
| return false; |
| |
| bool expectComma = false; |
| |
| // Optional background-position |
| RefPtrWillBeRawPtr<CSSValue> centerX = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> centerY = nullptr; |
| // parse2ValuesFillPosition advances the args next pointer. |
| parse2ValuesFillPosition(args, centerX, centerY); |
| |
| if ((centerX || centerY) && !consumeComma(args)) |
| return false; |
| |
| a = args->current(); |
| if (!a) |
| return false; |
| |
| result->setFirstX(toCSSPrimitiveValue(centerX.get())); |
| result->setSecondX(toCSSPrimitiveValue(centerX.get())); |
| // CSS3 radial gradients always share the same start and end point. |
| result->setFirstY(toCSSPrimitiveValue(centerY.get())); |
| result->setSecondY(toCSSPrimitiveValue(centerY.get())); |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> shapeValue = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> sizeValue = nullptr; |
| |
| // Optional shape and/or size in any order. |
| for (int i = 0; i < 2; ++i) { |
| if (a->m_unit != CSSParserValue::Identifier) |
| break; |
| |
| bool foundValue = false; |
| switch (a->id) { |
| case CSSValueCircle: |
| case CSSValueEllipse: |
| shapeValue = cssValuePool().createIdentifierValue(a->id); |
| foundValue = true; |
| break; |
| case CSSValueClosestSide: |
| case CSSValueClosestCorner: |
| case CSSValueFarthestSide: |
| case CSSValueFarthestCorner: |
| case CSSValueContain: |
| case CSSValueCover: |
| sizeValue = cssValuePool().createIdentifierValue(a->id); |
| foundValue = true; |
| break; |
| default: |
| break; |
| } |
| |
| if (foundValue) { |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| expectComma = true; |
| } |
| } |
| |
| result->setShape(shapeValue); |
| result->setSizingBehavior(sizeValue); |
| |
| // Or, two lengths or percentages |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> horizontalSize = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> verticalSize = nullptr; |
| |
| if (!shapeValue && !sizeValue) { |
| if (validUnit(a, FLength | FPercent)) { |
| horizontalSize = createPrimitiveNumericValue(a); |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| expectComma = true; |
| } |
| |
| if (validUnit(a, FLength | FPercent)) { |
| verticalSize = createPrimitiveNumericValue(a); |
| |
| a = args->next(); |
| if (!a) |
| return false; |
| expectComma = true; |
| } |
| } |
| |
| // Must have neither or both. |
| if (!horizontalSize != !verticalSize) |
| return false; |
| |
| result->setEndHorizontalSize(horizontalSize); |
| result->setEndVerticalSize(verticalSize); |
| |
| if (!parseGradientColorStops(args, result.get(), expectComma)) |
| return false; |
| |
| gradient = result.release(); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseLinearGradient(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& gradient, CSSGradientRepeat repeating) |
| { |
| RefPtrWillBeRawPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repeating, CSSLinearGradient); |
| |
| CSSParserFunction* function = valueList->current()->function; |
| CSSParserValueList* args = function->args.get(); |
| if (!args || !args->size()) |
| return false; |
| |
| CSSParserValue* a = args->current(); |
| if (!a) |
| return false; |
| |
| bool expectComma = false; |
| // Look for angle. |
| if (validUnit(a, FAngle, HTMLStandardMode)) { |
| result->setAngle(createPrimitiveNumericValue(a)); |
| |
| args->next(); |
| expectComma = true; |
| } else if (a->m_unit == CSSParserValue::Identifier && a->id == CSSValueTo) { |
| // to [ [left | right] || [top | bottom] ] |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> endX = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> endY = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> location = nullptr; |
| bool isHorizontal = false; |
| |
| location = valueFromSideKeyword(a, isHorizontal); |
| if (!location) |
| return false; |
| |
| if (isHorizontal) |
| endX = location; |
| else |
| endY = location; |
| |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| location = valueFromSideKeyword(a, isHorizontal); |
| if (location) { |
| if (isHorizontal) { |
| if (endX) |
| return false; |
| endX = location; |
| } else { |
| if (endY) |
| return false; |
| endY = location; |
| } |
| |
| args->next(); |
| } |
| |
| expectComma = true; |
| result->setFirstX(endX.release()); |
| result->setFirstY(endY.release()); |
| } |
| |
| if (!parseGradientColorStops(args, result.get(), expectComma)) |
| return false; |
| |
| if (!result->stopCount()) |
| return false; |
| |
| gradient = result.release(); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseRadialGradient(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& gradient, CSSGradientRepeat repeating) |
| { |
| RefPtrWillBeRawPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repeating, CSSRadialGradient); |
| |
| CSSParserValueList* args = valueList->current()->function->args.get(); |
| if (!args || !args->size()) |
| return false; |
| |
| CSSParserValue* a = args->current(); |
| if (!a) |
| return false; |
| |
| bool expectComma = false; |
| |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> shapeValue = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> sizeValue = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> horizontalSize = nullptr; |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> verticalSize = nullptr; |
| |
| // First part of grammar, the size/shape clause: |
| // [ circle || <length> ] | |
| // [ ellipse || [ <length> | <percentage> ]{2} ] | |
| // [ [ circle | ellipse] || <size-keyword> ] |
| for (int i = 0; i < 3; ++i) { |
| if (a->m_unit == CSSParserValue::Identifier) { |
| bool badIdent = false; |
| switch (a->id) { |
| case CSSValueCircle: |
| case CSSValueEllipse: |
| if (shapeValue) |
| return false; |
| shapeValue = cssValuePool().createIdentifierValue(a->id); |
| break; |
| case CSSValueClosestSide: |
| case CSSValueClosestCorner: |
| case CSSValueFarthestSide: |
| case CSSValueFarthestCorner: |
| if (sizeValue || horizontalSize) |
| return false; |
| sizeValue = cssValuePool().createIdentifierValue(a->id); |
| break; |
| default: |
| badIdent = true; |
| } |
| |
| if (badIdent) |
| break; |
| |
| a = args->next(); |
| if (!a) |
| return false; |
| } else if (validUnit(a, FLength | FPercent)) { |
| |
| if (sizeValue || horizontalSize) |
| return false; |
| horizontalSize = createPrimitiveNumericValue(a); |
| |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| if (validUnit(a, FLength | FPercent)) { |
| verticalSize = createPrimitiveNumericValue(a); |
| ++i; |
| a = args->next(); |
| if (!a) |
| return false; |
| } |
| } else |
| break; |
| } |
| |
| // You can specify size as a keyword or a length/percentage, not both. |
| if (sizeValue && horizontalSize) |
| return false; |
| // Circles must have 0 or 1 lengths. |
| if (shapeValue && shapeValue->getValueID() == CSSValueCircle && verticalSize) |
| return false; |
| // Ellipses must have 0 or 2 length/percentages. |
| if (shapeValue && shapeValue->getValueID() == CSSValueEllipse && horizontalSize && !verticalSize) |
| return false; |
| // If there's only one size, it must be a length. |
| if (!verticalSize && horizontalSize && horizontalSize->isPercentage()) |
| return false; |
| |
| result->setShape(shapeValue); |
| result->setSizingBehavior(sizeValue); |
| result->setEndHorizontalSize(horizontalSize); |
| result->setEndVerticalSize(verticalSize); |
| |
| // Second part of grammar, the center-position clause: |
| // at <position> |
| RefPtrWillBeRawPtr<CSSValue> centerX = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> centerY = nullptr; |
| if (a->m_unit == CSSParserValue::Identifier && a->id == CSSValueAt) { |
| a = args->next(); |
| if (!a) |
| return false; |
| |
| parseFillPosition(args, centerX, centerY); |
| if (!(centerX && centerY)) |
| return false; |
| |
| a = args->current(); |
| if (!a) |
| return false; |
| result->setFirstX(centerX); |
| result->setFirstY(centerY); |
| // Right now, CSS radial gradients have the same start and end centers. |
| result->setSecondX(centerX); |
| result->setSecondY(centerY); |
| } |
| |
| if (shapeValue || sizeValue || horizontalSize || centerX || centerY) |
| expectComma = true; |
| |
| if (!parseGradientColorStops(args, result.get(), expectComma)) |
| return false; |
| |
| gradient = result.release(); |
| return true; |
| } |
| |
| bool CSSPropertyParser::parseGradientColorStops(CSSParserValueList* valueList, CSSGradientValue* gradient, bool expectComma) |
| { |
| CSSParserValue* a = valueList->current(); |
| |
| // Now look for color stops. |
| // <color-stop-list> = [ <color-stop> , <color-hint>? ]# , <color-stop> |
| bool supportsColorHints = gradient->gradientType() == CSSLinearGradient |
| || gradient->gradientType() == CSSRadialGradient; |
| |
| // The first color stop cannot be a color hint. |
| bool previousStopWasColorHint = true; |
| while (a) { |
| // Look for the comma before the next stop. |
| if (expectComma) { |
| if (!isComma(a)) |
| return false; |
| |
| a = valueList->next(); |
| if (!a) |
| return false; |
| } |
| |
| // <color-stop> = <color> [ <percentage> | <length> ]? |
| // <color-hint> = <length> | <percentage> |
| CSSGradientColorStop stop; |
| stop.m_color = parseColor(a); |
| |
| // Two hints in a row are not allowed. |
| if (!stop.m_color && (!supportsColorHints || previousStopWasColorHint)) |
| return false; |
| previousStopWasColorHint = !stop.m_color; |
| |
| if (stop.m_color) |
| a = valueList->next(); |
| |
| if (a) { |
| if (validUnit(a, FLength | FPercent)) { |
| stop.m_position = createPrimitiveNumericValue(a); |
| a = valueList->next(); |
| } |
| } |
| |
| if (!stop.m_color && !stop.m_position) |
| return false; |
| |
| gradient->addStop(stop); |
| expectComma = true; |
| } |
| |
| // The last color stop cannot be a color hint. |
| if (previousStopWasColorHint) |
| return false; |
| |
| // Must have 2 or more stops to be valid. |
| return gradient->stopCount() >= 2; |
| } |
| |
| bool CSSPropertyParser::parseGeneratedImage(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value) |
| { |
| CSSParserValue* val = valueList->current(); |
| |
| if (val->m_unit != CSSParserValue::Function) |
| return false; |
| |
| if (val->function->id == CSSValueWebkitGradient) { |
| // FIXME: This should send a deprecation message. |
| if (m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::DeprecatedWebKitGradient); |
| return parseDeprecatedGradient(valueList, value); |
| } |
| |
| if (val->function->id == CSSValueWebkitLinearGradient) { |
| // FIXME: This should send a deprecation message. |
| if (m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::DeprecatedWebKitLinearGradient); |
| return parseDeprecatedLinearGradient(valueList, value, NonRepeating); |
| } |
| |
| if (val->function->id == CSSValueLinearGradient) |
| return parseLinearGradient(valueList, value, NonRepeating); |
| |
| if (val->function->id == CSSValueWebkitRepeatingLinearGradient) { |
| // FIXME: This should send a deprecation message. |
| if (m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::DeprecatedWebKitRepeatingLinearGradient); |
| return parseDeprecatedLinearGradient(valueList, value, Repeating); |
| } |
| |
| if (val->function->id == CSSValueRepeatingLinearGradient) |
| return parseLinearGradient(valueList, value, Repeating); |
| |
| if (val->function->id == CSSValueWebkitRadialGradient) { |
| // FIXME: This should send a deprecation message. |
| if (m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::DeprecatedWebKitRadialGradient); |
| return parseDeprecatedRadialGradient(valueList, value, NonRepeating); |
| } |
| |
| if (val->function->id == CSSValueRadialGradient) |
| return parseRadialGradient(valueList, value, NonRepeating); |
| |
| if (val->function->id == CSSValueWebkitRepeatingRadialGradient) { |
| if (m_context.useCounter()) |
| m_context.useCounter()->count(UseCounter::DeprecatedWebKitRepeatingRadialGradient); |
| return parseDeprecatedRadialGradient(valueList, value, Repeating); |
| } |
| |
| if (val->function->id == CSSValueRepeatingRadialGradient) |
| return parseRadialGradient(valueList, value, Repeating); |
| |
| if (val->function->id == CSSValueWebkitCrossFade) |
| return parseCrossfade(valueList, value); |
| |
| return false; |
| } |
| |
| bool CSSPropertyParser::parseCrossfade(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& crossfade) |
| { |
| // Walk the arguments. |
| CSSParserValueList* args = valueList->current()->function->args.get(); |
| if (!args || args->size() != 5) |
| return false; |
| RefPtrWillBeRawPtr<CSSValue> fromImageValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> toImageValue = nullptr; |
| |
| // The first argument is the "from" image. It is a fill image. |
| if (!args->current() || !parseFillImage(args, fromImageValue)) |
| return false; |
| args->next(); |
| |
| if (!consumeComma(args)) |
| return false; |
| |
| // The second argument is the "to" image. It is a fill image. |
| if (!args->current() || !parseFillImage(args, toImageValue)) |
| return false; |
| args->next(); |
| |
| if (!consumeComma(args)) |
| return false; |
| |
| // The third argument is the crossfade value. It is a percentage or a fractional number. |
| RefPtrWillBeRawPtr<CSSPrimitiveValue> percentage = nullptr; |
| CSSParserValue* value = args->current(); |
| if (!value) |
| return false; |
| |
| if (value->unit() == CSSPrimitiveValue::UnitType::Percentage) |
| percentage = cssValuePool().createValue(clampTo<double>(value->fValue / 100, 0, 1), CSSPrimitiveValue::UnitType::Number); |
| else if (value->unit() == CSSPrimitiveValue::UnitType::Number) |
| percentage = cssValuePool().createValue(clampTo<double>(value->fValue, 0, 1), CSSPrimitiveValue::UnitType::Number); |
| else |
| return false; |
| |
| crossfade = CSSCrossfadeValue::create(fromImageValue, toImageValue, percentage); |
| |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseImageSet(CSSParserValueList* valueList) |
| { |
| CSSParserValue* function = valueList->current(); |
| |
| if (function->m_unit != CSSParserValue::Function) |
| return nullptr; |
| |
| CSSParserValueList* functionArgs = valueList->current()->function->args.get(); |
| if (!functionArgs || !functionArgs->size() || !functionArgs->current()) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSImageSetValue> imageSet = CSSImageSetValue::create(); |
| |
| while (functionArgs->current()) { |
| CSSParserValue* arg = functionArgs->current(); |
| if (arg->m_unit != CSSParserValue::URI) |
| return nullptr; |
| |
| RefPtrWillBeRawPtr<CSSValue> image = createCSSImageValueWithReferrer(arg->string, completeURL(arg->string)); |
| imageSet->append(image); |
| |
| arg = functionArgs->next(); |
| if (!arg) |
| return nullptr; |
| |
| if (arg->m_unit != CSSParserValue::DimensionList) |
| return nullptr; |
| ASSERT(arg->valueList->valueAt(0)->unit() == CSSPrimitiveValue::UnitType::Number); |
| ASSERT(arg->valueList->valueAt(1)->m_unit == CSSParserValue::Identifier); |
| if (String(arg->valueList->valueAt(1)->string) != "x") |
| return nullptr; |
| double imageScaleFactor = arg->valueList->valueAt(0)->fValue; |
| if (imageScaleFactor <= 0) |
| return nullptr; |
| imageSet->append(cssValuePool().createValue(imageScaleFactor, CSSPrimitiveValue::UnitType::Number)); |
| functionArgs->next(); |
| |
| // If there are no more arguments, we're done. |
| if (!functionArgs->current()) |
| break; |
| |
| // If there are more arguments, they should be after a comma. |
| if (!consumeComma(functionArgs)) |
| return nullptr; |
| } |
| |
| return imageSet.release(); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseTransformOrigin() |
| { |
| CSSParserValue* value = m_valueList->current(); |
| CSSValueID id = value->id; |
| RefPtrWillBeRawPtr<CSSValue> xValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> yValue = nullptr; |
| RefPtrWillBeRawPtr<CSSValue> zValue = nullptr; |
| if (id == CSSValueLeft || id == CSSValueRight) { |
| xValue = cssValuePool().createIdentifierValue(id); |
| } else if (id == CSSValueTop || id == CSSValueBottom) { |
| yValue = cssValuePool().createIdentifierValue(id); |
| } else if (id == CSSValueCenter) { |
| // Unresolved as to whether this is X or Y. |
| } else if (validUnit(value, FPercent | FLength)) { |
| xValue = createPrimitiveNumericValue(value); |
| } else { |
| return nullptr; |
| } |
| |
| value = m_valueList->next(); |
| if (value) { |
| id = value->id; |
| if (!xValue && (id == CSSValueLeft || id == CSSValueRight)) { |
| xValue = cssValuePool().createIdentifierValue(id); |
| } else if (!yValue && (id == CSSValueTop || id == CSSValueBottom)) { |
| yValue = cssValuePool().createIdentifierValue(id); |
| } else if (id == CSSValueCenter) { |
| // Resolved below. |
| } else if (!yValue && validUnit(value, FPercent | FLength)) { |
| yValue = createPrimitiveNumericValue(value); |
| } else { |
| return nullptr; |
| } |
| |
| // If X or Y have not been resolved, they must be center. |
| if (!xValue) |
| xValue = cssValuePool().createIdentifierValue(CSSValueCenter); |
| if (!yValue) |
| yValue = cssValuePool().createIdentifierValue(CSSValueCenter); |
| |
| value = m_valueList->next(); |
| if (value) { |
| if (!validUnit(value, FLength)) |
| return nullptr; |
| zValue = createPrimitiveNumericValue(value); |
| |
| value = m_valueList->next(); |
| if (value) |
| return nullptr; |
| } |
| } else if (!xValue) { |
| if (yValue) { |
| xValue = cssValuePool().createValue(50, CSSPrimitiveValue::UnitType::Percentage); |
| } else { |
| xValue = cssValuePool().createIdentifierValue(CSSValueCenter); |
| } |
| } |
| |
| RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated(); |
| list->append(xValue.release()); |
| if (yValue) |
| list->append(yValue.release()); |
| if (zValue) |
| list->append(zValue.release()); |
| return list.release(); |
| } |
| |
| bool CSSPropertyParser::parseCalculation(CSSParserValue* value, ValueRange range) |
| { |
| ASSERT(isCalculation(value)); |
| |
| CSSParserTokenRange args = value->calcFunction->args; |
| |
| ASSERT(!m_parsedCalculation); |
| m_parsedCalculation = CSSCalcValue::create(args, range); |
| |
| if (!m_parsedCalculation) |
| return false; |
| |
| return true; |
| } |
| |
| template <typename CharacterType> |
| static CSSPropertyID unresolvedCSSPropertyID(const CharacterType* propertyName, unsigned length) |
| { |
| char buffer[maxCSSPropertyNameLength + 1]; // 1 for null character |
| |
| for (unsigned i = 0; i != length; ++i) { |
| CharacterType c = propertyName[i]; |
| if (c == 0 || c >= 0x7F) |
| return CSSPropertyInvalid; // illegal character |
| buffer[i] = toASCIILower(c); |
| } |
| buffer[length] = '\0'; |
| |
| const char* name = buffer; |
| const Property* hashTableEntry = findProperty(name, length); |
| if (!hashTableEntry) |
| return CSSPropertyInvalid; |
| CSSPropertyID property = static_cast<CSSPropertyID>(hashTableEntry->id); |
| if (!CSSPropertyMetadata::isEnabledProperty(property)) |
| return CSSPropertyInvalid; |
| return property; |
| } |
| |
| CSSPropertyID unresolvedCSSPropertyID(const String& string) |
| { |
| unsigned length = string.length(); |
| |
| if (!length) |
| return CSSPropertyInvalid; |
| if (length > maxCSSPropertyNameLength) |
| return CSSPropertyInvalid; |
| |
| return string.is8Bit() ? unresolvedCSSPropertyID(string.characters8(), length) : unresolvedCSSPropertyID(string.characters16(), length); |
| } |
| |
| CSSPropertyID unresolvedCSSPropertyID(const CSSParserString& string) |
| { |
| unsigned length = string.length(); |
| |
| if (!length) |
| return CSSPropertyInvalid; |
| if (length > maxCSSPropertyNameLength) |
| return CSSPropertyInvalid; |
| |
| return string.is8Bit() ? unresolvedCSSPropertyID(string.characters8(), length) : unresolvedCSSPropertyID(string.characters16(), length); |
| } |
| |
| template <typename CharacterType> |
| static CSSValueID cssValueKeywordID(const CharacterType* valueKeyword, unsigned length) |
| { |
| char buffer[maxCSSValueKeywordLength + 1]; // 1 for null character |
| |
| for (unsigned i = 0; i != length; ++i) { |
| CharacterType c = valueKeyword[i]; |
| if (c == 0 || c >= 0x7F) |
| return CSSValueInvalid; // illegal character |
| buffer[i] = WTF::toASCIILower(c); |
| } |
| buffer[length] = '\0'; |
| |
| const Value* hashTableEntry = findValue(buffer, length); |
| return hashTableEntry ? static_cast<CSSValueID>(hashTableEntry->id) : CSSValueInvalid; |
| } |
| |
| CSSValueID cssValueKeywordID(const CSSParserString& string) |
| { |
| unsigned length = string.length(); |
| if (!length) |
| return CSSValueInvalid; |
| if (length > maxCSSValueKeywordLength) |
| return CSSValueInvalid; |
| |
| return string.is8Bit() ? cssValueKeywordID(string.characters8(), length) : cssValueKeywordID(string.characters16(), length); |
| } |
| |
| bool CSSPropertyParser::isSystemColor(CSSValueID id) |
| { |
| return (id >= CSSValueActiveborder && id <= CSSValueWindowtext) || id == CSSValueMenu; |
| } |
| |
| bool CSSPropertyParser::parseSVGValue(CSSPropertyID propId, bool important) |
| { |
| CSSParserValue* value = m_valueList->current(); |
| ASSERT(value); |
| |
| CSSValueID id = value->id; |
| |
| bool validPrimitive = false; |
| RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr; |
| |
| switch (propId) { |
| /* The comment to the right defines all valid value of these |
| * properties as defined in SVG 1.1, Appendix N. Property index */ |
| case CSSPropertyBaselineShift: |
| // baseline | super | sub | <percentage> | <length> | inherit |
| if (id == CSSValueBaseline || id == CSSValueSub || id == CSSValueSuper) |
| validPrimitive = true; |
| else |
| validPrimitive = validUnit(value, FLength | FPercent, SVGAttributeMode); |
| break; |
| |
| case CSSPropertyClipPath: |
| case CSSPropertyFilter: |
| case CSSPropertyMask: |
| if (id == CSSValueNone) { |
| validPrimitive = true; |
| } else if (value->m_unit == CSSParserValue::URI) { |
| parsedValue = CSSURIValue::create(value->string); |
| if (parsedValue) |
| m_valueList->next(); |
| } |
| break; |
| |
| case CSSPropertyStrokeMiterlimit: // <miterlimit> | inherit |
| validPrimitive = validUnit(value, FNumber | FNonNeg, SVGAttributeMode); |
| break; |
| |
| case CSSPropertyStrokeOpacity: // <opacity-value> | inherit |
| case CSSPropertyFillOpacity: |
| case CSSPropertyStopOpacity: |
| case CSSPropertyFloodOpacity: |
| validPrimitive = validUnit(value, FNumber | FPercent, SVGAttributeMode); |
| break; |
| |
| /* Start of supported CSS properties with validation. This is needed for parseShortHand to work |
| * correctly and allows optimization in applyRule(..) |
| */ |
| |
| case CSSPropertyStrokeWidth: // <length> | inherit |
| case CSSPropertyStrokeDashoffset: |
| case CSSPropertyCx: |
| case CSSPropertyCy: |
| case CSSPropertyX: |
| case CSSPropertyY: |
| case CSSPropertyR: |
| case CSSPropertyRx: |
| case CSSPropertyRy: |
| validPrimitive = validUnit(value, FLength | FPercent, SVGAttributeMode); |
| break; |
| case CSSPropertyStrokeDasharray: // none | <dasharray> | inherit |
| if (id == CSSValueNone) |
| validPrimitive = true; |
| else |
| parsedValue = parseSVGStrokeDasharray(); |
| break; |
| |
| default: |
| // If you crash here, it's because you added a css property and are not handling it |
| // in either this switch statement or the one in CSSPropertyParser::parseValue |
| ASSERT_WITH_MESSAGE(0, "unimplemented propertyID: %d", propId); |
| return false; |
| } |
| |
| if (validPrimitive) { |
| if (id) |
| parsedValue = CSSPrimitiveValue::createIdentifier(id); |
| else if (value->m_unit == CSSParserValue::String) |
| parsedValue = CSSStringValue::create(value->string); |
| else if (value->unit() >= CSSPrimitiveValue::UnitType::Number && value->unit() <= CSSPrimitiveValue::UnitType::Kilohertz) |
| parsedValue = CSSPrimitiveValue::create(value->fValue, value->unit()); |
| else if (value->unit() == CSSPrimitiveValue::UnitType::Rems || value->unit() == CSSPrimitiveValue::UnitType::Chs) |
| parsedValue = CSSPrimitiveValue::create(value->fValue, value->unit()); |
| else if (value->unit() == CSSPrimitiveValue::UnitType::QuirkyEms) |
| parsedValue = CSSPrimitiveValue::create(value->fValue, CSSPrimitiveValue::UnitType::QuirkyEms); |
| if (isCalculation(value)) { |
| // FIXME calc() http://webkit.org/b/16662 : actually create a CSSPrimitiveValue here, ie |
| // parsedValue = CSSPrimitiveValue::create(m_parsedCalculation.release()); |
| m_parsedCalculation.release(); |
| parsedValue = nullptr; |
| } |
| m_valueList->next(); |
| } |
| if (!parsedValue || (m_valueList->current() && !inShorthand())) |
| return false; |
| |
| addProperty(propId, parsedValue.release(), important); |
| return true; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseSVGStrokeDasharray() |
| { |
| RefPtrWillBeRawPtr<CSSValueList> ret = CSSValueList::createCommaSeparated(); |
| CSSParserValue* value = m_valueList->current(); |
| bool validPrimitive = true; |
| while (value) { |
| validPrimitive = validUnit(value, FLength | FPercent | FNonNeg, SVGAttributeMode); |
| if (!validPrimitive) |
| break; |
| if (value->id) |
| ret->append(CSSPrimitiveValue::createIdentifier(value->id)); |
| else if (value->unit() >= CSSPrimitiveValue::UnitType::Number && value->unit() <= CSSPrimitiveValue::UnitType::Kilohertz) |
| ret->append(CSSPrimitiveValue::create(value->fValue, value->unit())); |
| else if (value->unit() == CSSPrimitiveValue::UnitType::Rems || value->unit() == CSSPrimitiveValue::UnitType::Chs) |
| ret->append(CSSPrimitiveValue::create(value->fValue, value->unit())); |
| value = m_valueList->next(); |
| bool commaConsumed = consumeComma(m_valueList); |
| value = m_valueList->current(); |
| if (commaConsumed && !value) |
| return nullptr; |
| } |
| if (!validPrimitive) |
| return nullptr; |
| return ret.release(); |
| } |
| |
| } // namespace blink |
