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chromium / chromium / src / 51aac093d49de5b38117e5715ac5f05d6e11bb70 / . / third_party / WebKit / Source / core / css / parser / CSSPropertyParser.cpp
blob: 8ae8434c21d5ac327e14d11bfeef0fab094bb469 [file] [log] [blame]
/*
* 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/CSSBasicShapes.h"
#include "core/css/CSSBorderImage.h"
#include "core/css/CSSCanvasValue.h"
#include "core/css/CSSContentDistributionValue.h"
#include "core/css/CSSCrossfadeValue.h"
#include "core/css/CSSCursorImageValue.h"
#include "core/css/CSSFontFaceSrcValue.h"
#include "core/css/CSSFontFeatureValue.h"
#include "core/css/CSSFunctionValue.h"
#include "core/css/CSSGridLineNamesValue.h"
#include "core/css/CSSImageSetValue.h"
#include "core/css/CSSImageValue.h"
#include "core/css/CSSLineBoxContainValue.h"
#include "core/css/CSSPathValue.h"
#include "core/css/CSSPrimitiveValueMappings.h"
#include "core/css/CSSProperty.h"
#include "core/css/CSSPropertyMetadata.h"
#include "core/css/CSSReflectValue.h"
#include "core/css/CSSSVGDocumentValue.h"
#include "core/css/CSSShadowValue.h"
#include "core/css/CSSTimingFunctionValue.h"
#include "core/css/CSSUnicodeRangeValue.h"
#include "core/css/CSSValuePool.h"
#include "core/css/Counter.h"
#include "core/css/HashTools.h"
#include "core/css/Pair.h"
#include "core/css/Rect.h"
#include "core/css/parser/CSSParserFastPaths.h"
#include "core/css/parser/CSSParserValues.h"
#include "core/frame/UseCounter.h"
#include "core/layout/LayoutTheme.h"
#include "core/style/GridCoordinate.h"
#include "core/svg/SVGPathUtilities.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);
}
static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createPrimitiveValuePair(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> first, PassRefPtrWillBeRawPtr<CSSPrimitiveValue> second, Pair::IdenticalValuesPolicy identicalValuesPolicy = Pair::DropIdenticalValues)
{
return cssValuePool().createValue(Pair::create(first, second, identicalValuesPolicy));
}
CSSPropertyParser::CSSPropertyParser(CSSParserValueList* valueList,
const CSSParserContext& context, WillBeHeapVector<CSSProperty, 256>& parsedProperties,
StyleRule::Type ruleType)
: m_valueList(valueList)
, m_context(context)
, m_parsedProperties(parsedProperties)
, m_ruleType(ruleType)
, m_inParseShorthand(0)
, m_currentShorthand(CSSPropertyInvalid)
, m_implicitShorthand(false)
{
}
bool CSSPropertyParser::parseValue(CSSPropertyID unresolvedProperty, bool important,
CSSParserValueList* valueList, const CSSParserContext& context,
WillBeHeapVector<CSSProperty, 256>& parsedProperties, StyleRule::Type ruleType)
{
int parsedPropertiesSize = parsedProperties.size();
CSSPropertyParser parser(valueList, context, parsedProperties, ruleType);
CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
bool parseSuccess;
if (ruleType == StyleRule::Viewport) {
parseSuccess = (RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(context.mode()))
&& parser.parseViewportProperty(resolvedProperty, important);
} else if (ruleType == StyleRule::FontFace) {
parseSuccess = parser.parseFontFaceDescriptor(resolvedProperty);
} else {
parseSuccess = parser.parseValue(unresolvedProperty, important);
}
// This doesn't count UA style sheets
if (parseSuccess && context.useCounter())
context.useCounter()->count(context, unresolvedProperty);
if (!parseSuccess)
parser.rollbackLastProperties(parsedProperties.size() - parsedPropertiesSize);
return parseSuccess;
}
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);
// Viewport descriptors have width and height as shorthands, but it doesn't
// make sense for CSSProperties.in to consider them as such. The shorthand
// index is only used by the inspector and doesn't affect viewport
// descriptors.
if (shorthands.isEmpty())
ASSERT(m_currentShorthand == CSSPropertyWidth || m_currentShorthand == CSSPropertyHeight);
else
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 CSS_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->function;
value->unit = CSSPrimitiveValue::CSS_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)));
}
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::CSS_NUMBER:
if (unitflags & FNumber)
return true;
if (shouldAcceptUnitLessValues(value, unitflags, cssParserMode)) {
value->unit = (unitflags & FLength) ? CSSPrimitiveValue::CSS_PX : CSSPrimitiveValue::CSS_DEG;
return true;
}
if ((unitflags & FInteger) && value->isInt)
return true;
if ((unitflags & FPositiveInteger) && value->isInt && value->fValue > 0)
return true;
return false;
case CSSPrimitiveValue::CSS_PERCENTAGE:
return unitflags & FPercent;
case CSSPrimitiveValue::CSS_QEM:
if (cssParserMode != UASheetMode)
return false;
/* fallthrough intentional */
case CSSPrimitiveValue::CSS_EMS:
case CSSPrimitiveValue::CSS_REMS:
case CSSPrimitiveValue::CSS_CHS:
case CSSPrimitiveValue::CSS_EXS:
case CSSPrimitiveValue::CSS_PX:
case CSSPrimitiveValue::CSS_CM:
case CSSPrimitiveValue::CSS_MM:
case CSSPrimitiveValue::CSS_IN:
case CSSPrimitiveValue::CSS_PT:
case CSSPrimitiveValue::CSS_PC:
case CSSPrimitiveValue::CSS_VW:
case CSSPrimitiveValue::CSS_VH:
case CSSPrimitiveValue::CSS_VMIN:
case CSSPrimitiveValue::CSS_VMAX:
return unitflags & FLength;
case CSSPrimitiveValue::CSS_MS:
case CSSPrimitiveValue::CSS_S:
return unitflags & FTime;
case CSSPrimitiveValue::CSS_DEG:
case CSSPrimitiveValue::CSS_RAD:
case CSSPrimitiveValue::CSS_GRAD:
case CSSPrimitiveValue::CSS_TURN:
return unitflags & FAngle;
case CSSPrimitiveValue::CSS_DPPX:
case CSSPrimitiveValue::CSS_DPI:
case CSSPrimitiveValue::CSS_DPCM:
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::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
|| (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrimitiveValue::CSS_CHS)
|| (value->unit >= CSSPrimitiveValue::CSS_VW && value->unit <= CSSPrimitiveValue::CSS_VMAX)
|| (value->unit >= CSSPrimitiveValue::CSS_DPPX && value->unit <= CSSPrimitiveValue::CSS_DPCM));
return cssValuePool().createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitType>(value->unit));
}
inline PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::createPrimitiveStringValue(CSSParserValue* value)
{
ASSERT(value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT);
return cssValuePool().createValue(value->string, CSSPrimitiveValue::CSS_STRING);
}
inline PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::createPrimitiveCustomIdentValue(CSSParserValue* value)
{
ASSERT(value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT);
return cssValuePool().createValue(value->string, CSSPrimitiveValue::CSS_CUSTOM_IDENT);
}
inline PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::createCSSImageValueWithReferrer(const String& 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->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->unit == CSSParserValue::Operator && value->iValue == '/';
}
static bool isGeneratedImageValue(CSSParserValue* val)
{
if (val->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 == CSSValueWebkitCanvas
|| id == CSSValueWebkitCrossFade;
}
bool CSSPropertyParser::validWidthOrHeight(CSSParserValue* value, Units unitless)
{
int id = value->id;
if (id == CSSValueIntrinsic || id == CSSValueMinIntrinsic || id == CSSValueWebkitMinContent || id == CSSValueWebkitMaxContent || id == CSSValueWebkitFillAvailable || id == CSSValueWebkitFitContent) {
if (m_context.useCounter()) {
if (value->id == CSSValueIntrinsic)
m_context.useCounter()->count(UseCounter::LegacyCSSValueIntrinsic);
else if (value->id == CSSValueMinIntrinsic)
m_context.useCounter()->count(UseCounter::LegacyCSSValueMinIntrinsic);
}
return true;
}
return validUnit(value, FLength | FPercent | FNonNeg | unitless);
}
inline PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseValidPrimitive(CSSValueID identifier, CSSParserValue* value)
{
if (identifier)
return cssValuePool().createIdentifierValue(identifier);
if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
return createPrimitiveNumericValue(value);
if (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrimitiveValue::CSS_CHS)
return createPrimitiveNumericValue(value);
if (value->unit >= CSSPrimitiveValue::CSS_VW && value->unit <= CSSPrimitiveValue::CSS_VMAX)
return createPrimitiveNumericValue(value);
if (value->unit >= CSSPrimitiveValue::CSS_DPPX && value->unit <= CSSPrimitiveValue::CSS_DPCM)
return createPrimitiveNumericValue(value);
if (value->unit == CSSPrimitiveValue::CSS_QEM)
return CSSPrimitiveValue::createAllowingMarginQuirk(value->fValue, CSSPrimitiveValue::CSS_EMS);
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;
}
int num = inShorthand() ? 1 : m_valueList->size();
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;
}
bool validPrimitive = false;
Units unitless = FUnknown;
RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
switch (propId) {
case CSSPropertySize: // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
parsedValue = parseSize();
break;
case CSSPropertyQuotes: // [<string> <string>]+ | none
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseQuotes();
break;
case CSSPropertyContent: // [ <string> | <uri> | <counter> | attr(X) | open-quote |
// close-quote | no-open-quote | no-close-quote ]+ | inherit
parsedValue = parseContent();
break;
case CSSPropertyClip: // <shape> | auto | inherit
if (id == CSSValueAuto)
validPrimitive = true;
else if (value->unit == CSSParserValue::Function)
parsedValue = parseClipShape();
break;
/* Start of supported CSS properties with validation. This is needed for parseShorthand to work
* correctly and allows optimization in blink::applyRule(..)
*/
case CSSPropertyOverflow: {
ShorthandScope scope(this, propId);
if (num != 1 || !parseValue(CSSPropertyOverflowY, important))
return false;
RefPtrWillBeRawPtr<CSSValue> overflowXValue = nullptr;
// FIXME: -webkit-paged-x or -webkit-paged-y only apply to overflow-y. If this value has been
// set using the shorthand, then for now overflow-x will default to auto, but once we implement
// pagination controls, it should default to hidden. If the overflow-y value is anything but
// paged-x or paged-y, then overflow-x and overflow-y should have the same value.
if (id == CSSValueWebkitPagedX || id == CSSValueWebkitPagedY)
overflowXValue = cssValuePool().createIdentifierValue(CSSValueAuto);
else
overflowXValue = m_parsedProperties.last().value();
addProperty(CSSPropertyOverflowX, overflowXValue.release(), important);
return true;
}
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 CSSPropertyFontWeight: { // normal | bold | bolder | lighter | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | inherit
if (m_valueList->size() != 1)
return false;
return parseFontWeight(important);
}
case CSSPropertyBorderSpacing: {
if (num == 1) {
ShorthandScope scope(this, CSSPropertyBorderSpacing);
if (!parseValue(CSSPropertyWebkitBorderHorizontalSpacing, important))
return false;
CSSValue* value = m_parsedProperties.last().value();
addProperty(CSSPropertyWebkitBorderVerticalSpacing, value, important);
return true;
}
else if (num == 2) {
ShorthandScope scope(this, CSSPropertyBorderSpacing);
if (!parseValue(CSSPropertyWebkitBorderHorizontalSpacing, important) || !parseValue(CSSPropertyWebkitBorderVerticalSpacing, important))
return false;
return true;
}
return false;
}
case CSSPropertyWebkitBorderHorizontalSpacing:
case CSSPropertyWebkitBorderVerticalSpacing:
unitless = FLength | FNonNeg;
if (inShorthand() && m_currentShorthand == CSSPropertyBorderSpacing)
unitless = unitless | FUnitlessQuirk;
validPrimitive = validUnit(value, unitless);
break;
case CSSPropertyOutlineColor: // <color> | invert | inherit
// Outline color has "invert" as additional keyword.
// Also, we want to allow the special focus color even in HTML Standard parsing mode.
if (id == CSSValueInvert || id == CSSValueWebkitFocusRingColor) {
validPrimitive = true;
break;
}
/* nobreak */
case CSSPropertyBackgroundColor: // <color> | inherit
case CSSPropertyBorderTopColor: // <color> | inherit
case CSSPropertyBorderRightColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyColor: // <color> | inherit
case CSSPropertyTextDecorationColor: // CSS3 text decoration colors
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
ASSERT(propId != CSSPropertyTextDecorationColor || RuntimeEnabledFeatures::css3TextDecorationsEnabled());
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->unit == CSSPrimitiveValue::CSS_URI) {
String uri = value->string;
if (!uri.isNull())
image = createCSSImageValueWithReferrer(uri, completeURL(uri));
} else if (value->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 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->unit == CSSPrimitiveValue::CSS_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->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 CSSPropertyWebkitTextStrokeWidth:
case CSSPropertyOutlineWidth: // <border-width> | inherit
case CSSPropertyWebkitBorderStartWidth:
case CSSPropertyWebkitBorderEndWidth:
case CSSPropertyWebkitBorderBeforeWidth:
case CSSPropertyWebkitBorderAfterWidth:
case CSSPropertyWebkitColumnRuleWidth:
if (id == CSSValueThin || id == CSSValueMedium || id == CSSValueThick)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FNonNeg | unitless);
break;
case CSSPropertyLetterSpacing: // normal | <length> | inherit
case CSSPropertyWordSpacing: // normal | <length> | inherit
if (id == CSSValueNormal)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FUnitlessQuirk);
break;
case CSSPropertyTextIndent:
parsedValue = parseTextIndent();
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 CSSPropertyMaxWidth:
case CSSPropertyMaxHeight:
unitless = FUnitlessQuirk;
// fall through
case CSSPropertyWebkitMaxLogicalWidth:
case CSSPropertyWebkitMaxLogicalHeight:
validPrimitive = (id == CSSValueNone || validWidthOrHeight(value, unitless));
break;
case CSSPropertyMinWidth:
case CSSPropertyMinHeight:
case CSSPropertyWidth:
case CSSPropertyHeight:
unitless = FUnitlessQuirk;
// fall through
case CSSPropertyWebkitMinLogicalWidth:
case CSSPropertyWebkitMinLogicalHeight:
case CSSPropertyWebkitLogicalWidth:
case CSSPropertyWebkitLogicalHeight:
validPrimitive = (id == CSSValueAuto || validWidthOrHeight(value, unitless));
break;
case CSSPropertyFontSize:
return parseFontSize(important);
case CSSPropertyFontVariant: // normal | small-caps | inherit
return parseFontVariant(important);
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 CSSPropertyOrphans: // <integer> | inherit | auto (We've added support for auto for backwards compatibility)
case CSSPropertyWidows: // <integer> | inherit | auto (Ditto)
if (id == CSSValueAuto)
validPrimitive = true;
else
validPrimitive = validUnit(value, FPositiveInteger);
break;
case CSSPropertyZIndex: // auto | <integer> | inherit
if (id == CSSValueAuto)
validPrimitive = true;
else
validPrimitive = validUnit(value, FInteger);
break;
case CSSPropertyLineHeight:
parsedValue = parseLineHeight();
break;
case CSSPropertyCounterIncrement:
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseCounter(1);
break;
case CSSPropertyCounterReset:
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseCounter(0);
break;
case CSSPropertyFontFamily:
// [[ <family-name> | <generic-family> ],]* [<family-name> | <generic-family>] | inherit
{
parsedValue = parseFontFamily();
break;
}
case CSSPropertyTextDecoration:
// Fall through 'text-decoration-line' parsing if CSS 3 Text Decoration
// is disabled to match CSS 2.1 rules for parsing 'text-decoration'.
if (RuntimeEnabledFeatures::css3TextDecorationsEnabled()) {
// [ <text-decoration-line> || <text-decoration-style> || <text-decoration-color> ] | inherit
return parseShorthand(CSSPropertyTextDecoration, textDecorationShorthand(), important);
}
case CSSPropertyWebkitTextDecorationsInEffect:
case CSSPropertyTextDecorationLine:
// none | [ underline || overline || line-through || blink ] | inherit
return parseTextDecoration(propId, important);
case CSSPropertyTextUnderlinePosition:
// auto | [ under || [ left | right ] ], but we only support auto | under for now
ASSERT(RuntimeEnabledFeatures::css3TextDecorationsEnabled());
validPrimitive = (id == CSSValueAuto || id == CSSValueUnder);
break;
case CSSPropertyZoom: // normal | reset | document | <number> | <percentage> | inherit
if (id == CSSValueNormal || id == CSSValueReset || id == CSSValueDocument)
validPrimitive = true;
else
validPrimitive = validUnit(value, FNumber | FPercent | FNonNeg);
if (validPrimitive && m_context.useCounter()
&& !(id == CSSValueNormal
|| (value->unit == CSSPrimitiveValue::CSS_NUMBER && value->fValue == 1)
|| (value->unit == CSSPrimitiveValue::CSS_PERCENTAGE && value->fValue == 100)))
m_context.useCounter()->count(UseCounter::CSSZoomNotEqualToOne);
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<CSSPrimitiveValue> 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<CSSPrimitiveValue> result = nullptr;
if (parseBorderImageWidth(result)) {
addProperty(propId, result, important);
return true;
}
break;
}
case CSSPropertyBorderTopRightRadius:
case CSSPropertyBorderTopLeftRadius:
case CSSPropertyBorderBottomLeftRadius:
case CSSPropertyBorderBottomRightRadius: {
if (num != 1 && num != 2)
return false;
validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
if (!validPrimitive)
return false;
RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue1 = createPrimitiveNumericValue(value);
RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue2 = nullptr;
if (num == 2) {
value = m_valueList->next();
validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
if (!validPrimitive)
return false;
parsedValue2 = createPrimitiveNumericValue(value);
} else
parsedValue2 = parsedValue1;
addProperty(propId, createPrimitiveValuePair(parsedValue1.release(), parsedValue2.release()), important);
return true;
}
case CSSPropertyTabSize:
// May be specified as a unit-less non-negative integer or length indicating number of space characters.
validPrimitive = validUnit(value, FInteger | FLength | FNonNeg);
break;
case CSSPropertyBorderRadius:
case CSSPropertyAliasWebkitBorderRadius:
return parseBorderRadius(unresolvedProperty, important);
case CSSPropertyOutlineOffset:
validPrimitive = validUnit(value, FLength);
break;
case CSSPropertyTextShadow: // CSS2 property, dropped in CSS2.1, back in CSS3, so treat as CSS3
case CSSPropertyBoxShadow:
if (id == CSSValueNone)
validPrimitive = true;
else {
RefPtrWillBeRawPtr<CSSValueList> shadowValueList = parseShadow(m_valueList, propId);
if (shadowValueList) {
addProperty(propId, shadowValueList.release(), important);
m_valueList->next();
return true;
}
return false;
}
break;
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 CSSPropertyWebkitFilter:
if (id == CSSValueNone)
validPrimitive = true;
else {
RefPtrWillBeRawPtr<CSSValue> val = parseFilter();
if (val) {
addProperty(propId, val, important);
return true;
}
return false;
}
break;
case CSSPropertyFlex: {
ShorthandScope scope(this, propId);
if (id == CSSValueNone) {
addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(0, CSSPrimitiveValue::CSS_NUMBER), important);
addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(0, CSSPrimitiveValue::CSS_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 CSSPropertyTransform:
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseTransform(unresolvedProperty == CSSPropertyAliasWebkitTransform);
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::CSS_PERCENTAGE));
if (list->length() == 2)
list->append(cssValuePool().createValue(0, CSSPrimitiveValue::CSS_PX));
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 CSSPropertyRotate: { // rotate : <angle> <number>{3}? defaults to a 0 0 1
ASSERT(RuntimeEnabledFeatures::cssIndependentTransformPropertiesEnabled());
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
if (!validUnit(value, FAngle))
return false;
list->append(createPrimitiveNumericValue(value));
value = m_valueList->next();
if (!value) {
parsedValue = list.release();
break;
}
for (unsigned i = 0; i < 3; i++) { // 3 dimensions of rotation
if (!value || !validUnit(value, FNumber))
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->unit = CSSPrimitiveValue::CSS_PX;
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::CSS_PERCENTAGE));
addProperty(propId, list.release(), important);
return true;
}
case CSSPropertyMotion:
// <motion-path> && <motion-offset> && <motion-rotation>
ASSERT(RuntimeEnabledFeatures::cssMotionPathEnabled());
return parseShorthand(propId, motionShorthand(), important);
case CSSPropertyMotionPath:
ASSERT(RuntimeEnabledFeatures::cssMotionPathEnabled());
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseMotionPath();
break;
case CSSPropertyMotionOffset:
ASSERT(RuntimeEnabledFeatures::cssMotionPathEnabled());
validPrimitive = validUnit(value, FLength | FPercent);
break;
case CSSPropertyMotionRotation:
ASSERT(RuntimeEnabledFeatures::cssMotionPathEnabled());
parsedValue = parseMotionRotation();
break;
case CSSPropertyAnimationDelay:
case CSSPropertyAnimationDirection:
case CSSPropertyAnimationDuration:
case CSSPropertyAnimationFillMode:
case CSSPropertyAnimationName:
case CSSPropertyAnimationPlayState:
case CSSPropertyAnimationIterationCount:
case CSSPropertyAnimationTimingFunction:
case CSSPropertyTransitionDelay:
case CSSPropertyTransitionDuration:
case CSSPropertyTransitionTimingFunction:
case CSSPropertyTransitionProperty:
parsedValue = parseAnimationPropertyList(propId, unresolvedProperty == CSSPropertyAliasWebkitAnimationName);
break;
case CSSPropertyJustifyContent:
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 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);
case CSSPropertyWebkitMarginCollapse: {
if (num == 1) {
ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
if (!parseValue(webkitMarginCollapseShorthand().properties()[0], important))
return false;
CSSValue* value = m_parsedProperties.last().value();
addProperty(webkitMarginCollapseShorthand().properties()[1], value, important);
return true;
}
else if (num == 2) {
ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
if (!parseValue(webkitMarginCollapseShorthand().properties()[0], important) || !parseValue(webkitMarginCollapseShorthand().properties()[1], important))
return false;
return true;
}
return false;
}
case CSSPropertyWebkitColumnCount:
parsedValue = parseColumnCount();
break;
case CSSPropertyWebkitColumnGap: // normal | <length>
if (id == CSSValueNormal)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FNonNeg);
break;
case CSSPropertyWebkitColumnSpan: // none | all | 1 (will be dropped in the unprefixed property)
validPrimitive = id == CSSValueAll || id == CSSValueNone || (value->unit == CSSPrimitiveValue::CSS_NUMBER && value->fValue == 1);
break;
case CSSPropertyWebkitColumnWidth: // auto | <length>
parsedValue = parseColumnWidth();
break;
case CSSPropertyWillChange:
parsedValue = parseWillChange();
break;
// End of CSS3 properties
// Apple specific properties. These will never be standardized and are purely to
// support custom WebKit-based Apple applications.
case CSSPropertyWebkitLineClamp:
// When specifying number of lines, don't allow 0 as a valid value
// When specifying either type of unit, require non-negative integers
validPrimitive = (!id && (value->unit == CSSPrimitiveValue::CSS_PERCENTAGE || value->fValue) && validUnit(value, FInteger | FPercent | FNonNeg));
break;
case CSSPropertyWebkitFontSizeDelta: // <length>
validPrimitive = validUnit(value, FLength | FUnitlessQuirk);
break;
case CSSPropertyWebkitHighlight:
if (id == CSSValueNone) {
validPrimitive = true;
} else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
parsedValue = createPrimitiveStringValue(value);
m_valueList->next();
}
break;
case CSSPropertyWebkitHyphenateCharacter:
case CSSPropertyWebkitLocale:
if (id == CSSValueAuto) {
validPrimitive = true;
} else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
parsedValue = createPrimitiveStringValue(value);
m_valueList->next();
}
break;
// End Apple-specific properties
case CSSPropertyWebkitAppRegion:
if (id >= CSSValueDrag && id <= CSSValueNoDrag)
validPrimitive = true;
break;
case CSSPropertyWebkitTapHighlightColor:
parsedValue = parseTapHighlightColor(m_valueList->current());
if (parsedValue)
m_valueList->next();
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 CSSPropertyWebkitBorderStart:
return parseShorthand(propId, webkitBorderStartShorthand(), important);
case CSSPropertyWebkitBorderEnd:
return parseShorthand(propId, webkitBorderEndShorthand(), important);
case CSSPropertyWebkitBorderBefore:
return parseShorthand(propId, webkitBorderBeforeShorthand(), important);
case CSSPropertyWebkitBorderAfter:
return parseShorthand(propId, webkitBorderAfterShorthand(), important);
case CSSPropertyOutline:
// [ 'outline-color' || 'outline-style' || 'outline-width' ] | inherit
return parseShorthand(propId, outlineShorthand(), 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 CSSPropertyFont:
// [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]?
// 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit
if (num == 1 && id >= CSSValueCaption && id <= CSSValueStatusBar) {
parseSystemFont(important);
return true;
}
return parseFont(important);
case CSSPropertyListStyle:
return parseShorthand(propId, listStyleShorthand(), important);
case CSSPropertyWebkitColumns:
return parseColumnsShorthand(important);
case CSSPropertyWebkitColumnRule:
return parseShorthand(propId, webkitColumnRuleShorthand(), important);
case CSSPropertyWebkitTextStroke:
return parseShorthand(propId, webkitTextStrokeShorthand(), important);
case CSSPropertyAnimation:
return parseAnimationShorthand(unresolvedProperty == CSSPropertyAliasWebkitAnimation, important);
case CSSPropertyTransition:
return parseTransitionShorthand(important);
case CSSPropertyInvalid:
return false;
case CSSPropertyPage:
parsedValue = parsePage();
break;
// CSS Text Layout Module Level 3: Vertical writing support
case CSSPropertyWebkitTextEmphasis:
return parseShorthand(propId, webkitTextEmphasisShorthand(), important);
case CSSPropertyWebkitTextEmphasisStyle:
parsedValue = parseTextEmphasisStyle();
break;
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 CSSPropertyWebkitLineBoxContain:
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseLineBoxContain();
break;
case CSSPropertyWebkitFontFeatureSettings:
if (id == CSSValueNormal)
validPrimitive = true;
else
parsedValue = parseFontFeatureSettings();
break;
case CSSPropertyFontVariantLigatures:
if (id == CSSValueNormal)
validPrimitive = true;
else
return parseFontVariantLigatures(important);
break;
case CSSPropertyWebkitClipPath:
if (id == CSSValueNone) {
validPrimitive = true;
} else if (value->unit == CSSParserValue::Function) {
parsedValue = parseBasicShape();
} else if (value->unit == CSSPrimitiveValue::CSS_URI) {
parsedValue = CSSPrimitiveValue::create(value->string, CSSPrimitiveValue::CSS_URI);
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 CSSPropertyTouchAction:
parsedValue = parseTouchAction();
break;
case CSSPropertyScrollBlocksOn:
if (id == CSSValueNone)
validPrimitive = true;
else
parsedValue = parseScrollBlocksOn();
break;
case CSSPropertyAlignContent:
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;
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;
}
static bool isValidTransitionPropertyList(CSSValueList* value)
{
if (value->length() < 2)
return true;
for (auto& property : *value) {
// FIXME: Shorthand parsing shouldn't add initial to the list since it won't round-trip
if (property->isInitialValue())
continue;
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(property.get());
if (primitiveValue->isValueID() && primitiveValue->getValueID() == CSSValueNone)
return false;
}
return true;
}
bool CSSPropertyParser::parseAnimationShorthand(bool useLegacyparsing, bool important)
{
const StylePropertyShorthand& animationProperties = animationShorthandForParsing();
const unsigned numProperties = 8;
// The list of properties in the shorthand should be the same
// length as the list with animation name in last position, even though they are
// in a different order.
ASSERT(numProperties == animationProperties.length());
ASSERT(numProperties == animationShorthand().length());
ShorthandScope scope(this, CSSPropertyAnimation);
bool parsedProperty[numProperties] = { false };
RefPtrWillBeRawPtr<CSSValueList> values[numProperties];
for (size_t i = 0; i < numProperties; ++i)
values[i] = CSSValueList::createCommaSeparated();
while (m_valueList->current()) {
if (consumeComma(m_valueList)) {
// We hit the end. Fill in all remaining values with the initial value.
for (size_t i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
values[i]->append(cssValuePool().createImplicitInitialValue());
parsedProperty[i] = false;
}
if (!m_valueList->current())
break;
}
bool found = false;
for (size_t i = 0; i < numProperties; ++i) {
if (parsedProperty[i])
continue;
if (RefPtrWillBeRawPtr<CSSValue> val = parseAnimationProperty(animationProperties.properties()[i], useLegacyparsing)) {
parsedProperty[i] = found = true;
values[i]->append(val.release());
break;
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
for (size_t i = 0; i < numProperties; ++i) {
// If we didn't find the property, set an intial value.
if (!parsedProperty[i])
values[i]->append(cssValuePool().createImplicitInitialValue());
addProperty(animationProperties.properties()[i], values[i].release(), important);
}
return true;
}
bool CSSPropertyParser::parseTransitionShorthand(bool important)
{
const unsigned numProperties = 4;
const StylePropertyShorthand& shorthand = transitionShorthandForParsing();
ASSERT(numProperties == shorthand.length());
ShorthandScope scope(this, CSSPropertyTransition);
bool parsedProperty[numProperties] = { false };
RefPtrWillBeRawPtr<CSSValueList> values[numProperties];
for (size_t i = 0; i < numProperties; ++i)
values[i] = CSSValueList::createCommaSeparated();
while (m_valueList->current()) {
if (consumeComma(m_valueList)) {
// We hit the end. Fill in all remaining values with the initial value.
for (size_t i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
values[i]->append(cssValuePool().createImplicitInitialValue());
parsedProperty[i] = false;
}
if (!m_valueList->current())
break;
}
bool found = false;
for (size_t i = 0; i < numProperties; ++i) {
if (parsedProperty[i])
continue;
if (RefPtrWillBeRawPtr<CSSValue> val = parseAnimationProperty(shorthand.properties()[i], false)) {
parsedProperty[i] = found = true;
values[i]->append(val.release());
break;
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
ASSERT(shorthand.properties()[3] == CSSPropertyTransitionProperty);
if (!isValidTransitionPropertyList(values[3].get()))
return false;
// Fill in any remaining properties with the initial value and add
for (size_t i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
values[i]->append(cssValuePool().createImplicitInitialValue());
addProperty(shorthand.properties()[i], values[i].release(), important);
}
return true;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseColumnWidth()
{
CSSParserValue* value = m_valueList->current();
// Always parse lengths in strict mode here, since it would be ambiguous otherwise when used in
// the 'columns' shorthand property.
if (value->id == CSSValueAuto || (validUnit(value, FLength | FNonNeg, HTMLStandardMode) && (m_parsedCalculation || value->fValue != 0))) {
RefPtrWillBeRawPtr<CSSValue> parsedValue = parseValidPrimitive(value->id, value);
m_valueList->next();
return parsedValue;
}
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseColumnCount()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueAuto || validUnit(value, FPositiveInteger)) {
RefPtrWillBeRawPtr<CSSValue> parsedValue = parseValidPrimitive(value->id, value);
m_valueList->next();
return parsedValue;
}
return nullptr;
}
bool CSSPropertyParser::parseColumnsShorthand(bool important)
{
RefPtrWillBeRawPtr<CSSValue> columnWidth = nullptr;
RefPtrWillBeRawPtr<CSSValue> columnCount = nullptr;
bool hasPendingExplicitAuto = false;
for (unsigned propertiesParsed = 0; CSSParserValue* value = m_valueList->current(); propertiesParsed++) {
if (propertiesParsed >= 2)
return false; // Too many values for this shorthand. Invalid declaration.
if (!propertiesParsed && value->id == CSSValueAuto) {
// 'auto' is a valid value for any of the two longhands, and at this point we
// don't know which one(s) it is meant for. We need to see if there are other
// values first.
m_valueList->next();
hasPendingExplicitAuto = true;
} else {
if (!columnWidth) {
if ((columnWidth = parseColumnWidth()))
continue;
}
if (!columnCount) {
if ((columnCount = parseColumnCount()))
continue;
}
// If we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it.
return false;
}
}
if (hasPendingExplicitAuto) {
// Time to assign the previously skipped 'auto' value to a property. If both properties are
// unassigned at this point (i.e. 'columns:auto'), it doesn't matter that much which one we
// set (although it does make a slight difference to web-inspector). The one we don't set
// here will get an implicit 'auto' value further down.
if (!columnWidth) {
columnWidth = cssValuePool().createIdentifierValue(CSSValueAuto);
} else {
ASSERT(!columnCount);
columnCount = cssValuePool().createIdentifierValue(CSSValueAuto);
}
}
ASSERT(columnCount || columnWidth);
// Any unassigned property at this point will become implicit 'auto'.
if (columnWidth)
addProperty(CSSPropertyWebkitColumnWidth, columnWidth, important);
else
addProperty(CSSPropertyWebkitColumnWidth, cssValuePool().createIdentifierValue(CSSValueAuto), important, true /* implicit */);
if (columnCount)
addProperty(CSSPropertyWebkitColumnCount, columnCount, important);
else
addProperty(CSSPropertyWebkitColumnCount, cssValuePool().createIdentifierValue(CSSValueAuto), important, true /* implicit */);
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->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))
return nullptr;
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);
}
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parsePage()
{
CSSParserValue* value = m_valueList->current();
m_valueList->next();
ASSERT(value);
if (value->id == CSSValueAuto)
return cssValuePool().createIdentifierValue(value->id);
if (value->unit == CSSPrimitiveValue::CSS_IDENT)
return createPrimitiveCustomIdentValue(value);
return nullptr;
}
// <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseSize()
{
CSSParserValue* value = m_valueList->current();
ASSERT(value);
RefPtrWillBeRawPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
// First parameter.
SizeParameterType paramType = parseSizeParameter(parsedValues.get(), value, None);
if (paramType == None)
return nullptr;
value = m_valueList->next();
// Second parameter, if any.
if (value) {
paramType = parseSizeParameter(parsedValues.get(), value, paramType);
if (paramType == None)
return nullptr;
m_valueList->next();
}
return parsedValues.release();
}
CSSPropertyParser::SizeParameterType CSSPropertyParser::parseSizeParameter(CSSValueList* parsedValues, CSSParserValue* value, SizeParameterType prevParamType)
{
switch (value->id) {
case CSSValueAuto:
if (prevParamType == None) {
parsedValues->append(cssValuePool().createIdentifierValue(value->id));
return Auto;
}
return None;
case CSSValueLandscape:
case CSSValuePortrait:
if (prevParamType == None || prevParamType == PageSize) {
parsedValues->append(cssValuePool().createIdentifierValue(value->id));
return Orientation;
}
return None;
case CSSValueA3:
case CSSValueA4:
case CSSValueA5:
case CSSValueB4:
case CSSValueB5:
case CSSValueLedger:
case CSSValueLegal:
case CSSValueLetter:
if (prevParamType == None || prevParamType == Orientation) {
// Normalize to Page Size then Orientation order by prepending for simpler StyleBuilder handling
parsedValues->prepend(cssValuePool().createIdentifierValue(value->id));
return PageSize;
}
return None;
case 0:
if (validUnit(value, FLength | FNonNeg) && (prevParamType == None || prevParamType == Length)) {
parsedValues->append(createPrimitiveNumericValue(value));
return Length;
}
return None;
default:
return None;
}
}
// [ <string> <string> ]+ | none, but none is handled in parseValue
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseQuotes()
{
RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
while (CSSParserValue* val = m_valueList->current()) {
RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
if (val->unit != CSSPrimitiveValue::CSS_STRING)
return nullptr;
parsedValue = createPrimitiveStringValue(val);
values->append(parsedValue.release());
m_valueList->next();
}
if (values->length() && values->length() % 2 == 0)
return values.release();
return nullptr;
}
// [ <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->unit == CSSPrimitiveValue::CSS_URI) {
// url
parsedValue = createCSSImageValueWithReferrer(val->string, completeURL(val->string));
} else if (val->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->unit == CSSPrimitiveValue::CSS_IDENT) {
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->unit == CSSPrimitiveValue::CSS_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->unit != CSSPrimitiveValue::CSS_IDENT)
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();
return cssValuePool().createValue(attrName, CSSPrimitiveValue::CSS_ATTR);
}
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'
//
// TODO(fs): The "extended color keywords" are not included.
return (id >= CSSValueAqua && id <= CSSValueWebkitText) || id == CSSValueMenu;
}
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseColor(const CSSParserValue* value, bool acceptQuirkyColors)
{
CSSValueID id = value->id;
if (isColorKeyword(id)) {
if (!isValueAllowedInMode(id, m_context.mode()))
return nullptr;
return cssValuePool().createIdentifierValue(id);
}
RGBA32 c = Color::transparent;
if (!parseColorFromValue(value, c, acceptQuirkyColors))
return nullptr;
return cssValuePool().createColorValue(c);
}
// Used to parse background-color when part of a shorthand.
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseBackgroundColor(const CSSParserValue* value)
{
CSSValueID id = value->id;
// Allow -webkit-text regardless of quirks.
if (id == CSSValueWebkitText)
return cssValuePool().createIdentifierValue(id);
return parseColor(value);
}
// Used to parse the '-webkit-tap-highlight-color' property.
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseTapHighlightColor(const CSSParserValue* value)
{
CSSValueID id = value->id;
// Disallow -webkit-text regardless of quirks.
if (id == CSSValueWebkitText)
return nullptr;
// Allow currentcolor in quirks-mode only.
if (id == CSSValueCurrentcolor) {
if (!inQuirksMode())
return nullptr;
return cssValuePool().createIdentifierValue(id);
}
return parseColor(value);
}
// Used to parse <color> for CSS gradients.
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseGradientStopColor(const CSSParserValue* value)
{
CSSValueID id = value->id;
// Allow -webkit-text regardless of quirks.
if (id == CSSValueWebkitText)
return cssValuePool().createIdentifierValue(id);
return parseColor(value);
}
// Used to parse colors for -webkit-gradient(...).
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseDeprecatedGradientStopColor(const CSSParserValue* value)
{
// Disallow currentcolor.
if (value->id == CSSValueCurrentcolor)
return nullptr;
return parseGradientStopColor(value);
}
bool CSSPropertyParser::parseFillImage(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& value)
{
if (valueList->current()->id == CSSValueNone) {
value = cssValuePool().createIdentifierValue(CSSValueNone);
return true;
}
if (valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
value = createCSSImageValueWithReferrer(valueList->current()->string, completeURL(valueList->current()->string));
return true;
}
if (isGeneratedImageValue(valueList->current()))
return parseGeneratedImage(valueList, value);
if (valueList->current()->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::CSS_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::CSS_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::CSS_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 = createPrimitiveValuePair(parsedValue1, parsedValue2);
value2 = createPrimitiveValuePair(value3, value4);
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 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(firstPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::CSS_PERCENTAGE));
value2 = createPrimitiveValuePair(parsedValue2, value3);
} else if (ident3 == CSSValueCenter) {
if (isFillPositionKeyword(ident2))
return;
secondPositionKeyword = CSSValueTop;
if (ident1 == CSSValueTop || ident1 == CSSValueBottom) {
secondPositionKeyword = CSSValueLeft;
swapNeeded = true;
}
value1 = createPrimitiveValuePair(parsedValue1, parsedValue2);
value2 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(secondPositionKeyword), cssValuePool().createValue(50, CSSPrimitiveValue::CSS_PERCENTAGE));
} 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::CSS_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::CSS_PERCENTAGE);
}
if (isValueConflictingWithCurrentEdge(ident1, secondPositionKeyword))
return;
value1 = createPrimitiveValuePair(parsedValue1, firstPositionValue);
value2 = createPrimitiveValuePair(cssValuePool().createIdentifierValue(secondPositionKeyword), secondPositionValue);
}
if (ident1 == CSSValueTop || ident1 == CSSValueBottom || swapNeeded)
value1.swap(value2);
#if ENABLE(ASSERT)
CSSPrimitiveValue* first = toCSSPrimitiveValue(value1.get());
CSSPrimitiveValue* second = toCSSPrimitiveValue(value2.get());
ident1 = first->getPairValue()->first()->getValueID();
ident2 = second->getPairValue()->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::CSS_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 createPrimitiveValuePair(parsedValue1.release(), parsedValue2.release(), Pair::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 = parseBackgroundColor(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))) {
currValue = cssValuePool().createIdentifierValue(val->id);
m_valueList->next();
}
break;
case CSSPropertyBackgroundClip:
if (parseBackgroundClip(val, currValue))
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;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationDelay()
{
CSSParserValue* value = m_valueList->current();
if (validUnit(value, FTime))
return createPrimitiveNumericValue(value);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationDirection()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNormal || value->id == CSSValueAlternate || value->id == CSSValueReverse || value->id == CSSValueAlternateReverse)
return cssValuePool().createIdentifierValue(value->id);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationDuration()
{
CSSParserValue* value = m_valueList->current();
if (validUnit(value, FTime | FNonNeg))
return createPrimitiveNumericValue(value);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationFillMode()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNone || value->id == CSSValueForwards || value->id == CSSValueBackwards || value->id == CSSValueBoth)
return cssValuePool().createIdentifierValue(value->id);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationIterationCount()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueInfinite)
return cssValuePool().createIdentifierValue(value->id);
if (validUnit(value, FNumber | FNonNeg))
return createPrimitiveNumericValue(value);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationName(bool allowQuotedName)
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNone)
return cssValuePool().createIdentifierValue(CSSValueNone);
if (value->unit == CSSPrimitiveValue::CSS_IDENT)
return createPrimitiveCustomIdentValue(value);
if (allowQuotedName && value->unit == CSSPrimitiveValue::CSS_STRING) {
// Legacy support for strings in prefixed animations
if (m_context.useCounter())
m_context.useCounter()->count(UseCounter::QuotedAnimationName);
if (equalIgnoringCase(value->string, "none"))
return cssValuePool().createIdentifierValue(CSSValueNone);
return createPrimitiveCustomIdentValue(value);
}
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationPlayState()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueRunning || value->id == CSSValuePaused)
return cssValuePool().createIdentifierValue(value->id);
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationProperty()
{
CSSParserValue* value = m_valueList->current();
if (value->unit != CSSPrimitiveValue::CSS_IDENT)
return nullptr;
// Since all is valid css property keyword, cssPropertyID for all
// returns non-null value. We need to check "all" before
// cssPropertyID check.
if (value->id == CSSValueAll)
return cssValuePool().createIdentifierValue(CSSValueAll);
CSSPropertyID property = unresolvedCSSPropertyID(value->string);
if (property) {
ASSERT(CSSPropertyMetadata::isEnabledProperty(property));
return cssValuePool().createIdentifierValue(property);
}
if (value->id == CSSValueNone)
return cssValuePool().createIdentifierValue(CSSValueNone);
if (value->id == CSSValueInitial || value->id == CSSValueInherit)
return nullptr;
return createPrimitiveCustomIdentValue(value);
}
bool CSSPropertyParser::parseCubicBezierTimingFunctionValue(CSSParserValueList*& args, double& result)
{
CSSParserValue* v = args->current();
if (!validUnit(v, FNumber))
return false;
result = v->fValue;
v = args->next();
if (!v)
// The last number in the function has no comma after it, so we're done.
return true;
return consumeComma(args);
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationTimingFunction()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueEase || value->id == CSSValueLinear || value->id == CSSValueEaseIn || value->id == CSSValueEaseOut
|| value->id == CSSValueEaseInOut || value->id == CSSValueStepStart || value->id == CSSValueStepEnd
|| value->id == CSSValueStepMiddle)
return cssValuePool().createIdentifierValue(value->id);
// We must be a function.
if (value->unit != CSSParserValue::Function)
return nullptr;
CSSParserValueList* args = value->function->args.get();
if (value->function->id == CSSValueSteps) {
// For steps, 1 or 2 params must be specified (comma-separated)
if (!args || (args->size() != 1 && args->size() != 3))
return nullptr;
// There are two values.
int numSteps;
StepsTimingFunction::StepAtPosition stepAtPosition = StepsTimingFunction::End;
CSSParserValue* v = args->current();
if (!validUnit(v, FInteger))
return nullptr;
numSteps = clampTo<int>(v->fValue);
if (numSteps < 1)
return nullptr;
if (args->next()) {
// There is a comma so we need to parse the second value
if (!consumeComma(args))
return nullptr;
switch (args->current()->id) {
case CSSValueMiddle:
if (!RuntimeEnabledFeatures::webAnimationsAPIEnabled())
return nullptr;
stepAtPosition = StepsTimingFunction::Middle;
break;
case CSSValueStart:
stepAtPosition = StepsTimingFunction::Start;
break;
case CSSValueEnd:
stepAtPosition = StepsTimingFunction::End;
break;
default:
return nullptr;
}
}
return CSSStepsTimingFunctionValue::create(numSteps, stepAtPosition);
}
if (value->function->id == CSSValueCubicBezier) {
// For cubic bezier, 4 values must be specified.
if (!args || args->size() != 7)
return nullptr;
// There are two points specified. The x values must be between 0 and 1 but the y values can exceed this range.
double x1, y1, x2, y2;
if (!parseCubicBezierTimingFunctionValue(args, x1))
return nullptr;
if (x1 < 0 || x1 > 1)
return nullptr;
if (!parseCubicBezierTimingFunctionValue(args, y1))
return nullptr;
if (!parseCubicBezierTimingFunctionValue(args, x2))
return nullptr;
if (x2 < 0 || x2 > 1)
return nullptr;
if (!parseCubicBezierTimingFunctionValue(args, y2))
return nullptr;
return CSSCubicBezierTimingFunctionValue::create(x1, y1, x2, y2);
}
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseAnimationProperty(CSSPropertyID propId, bool useLegacyParsing)
{
RefPtrWillBeRawPtr<CSSValue> value = nullptr;
switch (propId) {
case CSSPropertyAnimationDelay:
case CSSPropertyTransitionDelay:
value = parseAnimationDelay();
break;
case CSSPropertyAnimationDirection:
value = parseAnimationDirection();
break;
case CSSPropertyAnimationDuration:
case CSSPropertyTransitionDuration:
value = parseAnimationDuration();
break;
case CSSPropertyAnimationFillMode:
value = parseAnimationFillMode();
break;
case CSSPropertyAnimationIterationCount:
value = parseAnimationIterationCount();
break;
case CSSPropertyAnimationName:
value = parseAnimationName(useLegacyParsing);
break;
case CSSPropertyAnimationPlayState:
value = parseAnimationPlayState();
break;
case CSSPropertyTransitionProperty:
value = parseAnimationProperty();
break;
case CSSPropertyAnimationTimingFunction:
case CSSPropertyTransitionTimingFunction:
value = parseAnimationTimingFunction();
break;
default:
ASSERT_NOT_REACHED();
return nullptr;
}
if (value)
m_valueList->next();
return value.release();
}
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseAnimationPropertyList(CSSPropertyID propId, bool useLegacyParsing)
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
while (true) {
RefPtrWillBeRawPtr<CSSValue> value = parseAnimationProperty(propId, useLegacyParsing);
if (!value)
return nullptr;
list->append(value.release());
if (!m_valueList->current())
break;
if (!consumeComma(m_valueList) || !m_valueList->current())
return nullptr;
}
if (propId == CSSPropertyTransitionProperty && !isValidTransitionPropertyList(list.get()))
return nullptr;
ASSERT(list->length());
return list.release();
}
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.unit == CSSPrimitiveValue::CSS_IDENT && 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<CSSPrimitiveValue>& 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<CSSPrimitiveValue> 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 cssValuePool().createValue(gridLineName->getStringValue(), CSSPrimitiveValue::CSS_CUSTOM_IDENT);
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->isPrimitiveValue() && toCSSPrimitiveValue(value)->isCustomIdent())
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::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()->unit != CSSPrimitiveValue::CSS_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.unit == CSSParserValue::Operator && value.iValue == ']';
}
bool CSSPropertyParser::parseGridLineNames(CSSParserValueList& inputList, CSSValueList& valueList, CSSGridLineNamesValue* previousNamedAreaTrailingLineNames)
{
if (!inputList.current() || inputList.current()->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<CSSPrimitiveValue> 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->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->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)
return cssValuePool().createIdentifierValue(currentValue->id);
if (currentValue->unit == CSSPrimitiveValue::CSS_FR) {
double flexValue = currentValue->fValue;
// Fractional unit is a non-negative dimension.
if (flexValue <= 0)
return nullptr;
return cssValuePool().createValue(flexValue, CSSPrimitiveValue::CSS_FR);
}
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->unit != CSSPrimitiveValue::CSS_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; lookAheadCol < (columnCount - 1); ++lookAheadCol) {
if (columnNames[lookAheadCol + 1] != gridAreaName)
break;
}
NamedGridAreaMap::iterator gridAreaIt = gridAreaMap.find(gridAreaName);
if (gridAreaIt == gridAreaMap.end()) {
gridAreaMap.add(gridAreaName, GridCoordinate(GridSpan(rowCount, rowCount), 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.next().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;
}
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->unit != CSSPrimitiveValue::CSS_IDENT)
return nullptr;
RefPtrWillBeRawPtr<CSSPrimitiveValue> identifier = createPrimitiveCustomIdentValue(i);
RefPtrWillBeRawPtr<CSSPrimitiveValue> separator = nullptr;
if (!counters)
separator = cssValuePool().createValue(String(), CSSPrimitiveValue::CSS_CUSTOM_IDENT);
else {
args->next();
if (!consumeComma(args))
return nullptr;
i = args->current();
if (i->unit != CSSPrimitiveValue::CSS_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->unit != CSSPrimitiveValue::CSS_IDENT)
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 cssValuePool().createValue(Counter::create(identifier.release(), listStyle.release(), separator.release()));
}
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseClipShape()
{
CSSParserValue* value = m_valueList->current();
CSSParserValueList* args = value->function->args.get();
if (value->function->id != CSSValueRect || !args)
return nullptr;
// rect(t, r, b, l) || rect(t r b l)
if (args->size() != 4 && args->size() != 7)
return nullptr;
RefPtrWillBeRawPtr<Rect> rect = Rect::create();
int i = 0;
CSSParserValue* a = args->current();
while (a) {
if (a->id != CSSValueAuto && !validUnit(a, FLength | FUnitlessQuirk))
return nullptr;
RefPtrWillBeRawPtr<CSSPrimitiveValue> length = a->id == CSSValueAuto ?
cssValuePool().createIdentifierValue(CSSValueAuto) :
createPrimitiveNumericValue(a);
if (i == 0)
rect->setTop(length);
else if (i == 1)
rect->setRight(length);
else if (i == 2)
rect->setBottom(length);
else
rect->setLeft(length);
a = args->next();
if (a && args->size() == 7) {
if (!consumeComma(args))
return nullptr;
a = args->current();
}
i++;
}
m_valueList->next();
return cssValuePool().createValue(rect.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<CSSBasicShape> CSSPropertyParser::parseInsetRoundedCorners(PassRefPtrWillBeRawPtr<CSSBasicShapeInset> 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->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(createPrimitiveValuePair(radii[0][0].release(), radii[1][0].release()));
shape->setTopRightRadius(createPrimitiveValuePair(radii[0][1].release(), radii[1][1].release()));
shape->setBottomRightRadius(createPrimitiveValuePair(radii[0][2].release(), radii[1][2].release()));
shape->setBottomLeftRadius(createPrimitiveValuePair(radii[0][3].release(), radii[1][3].release()));
return shape;
}
PassRefPtrWillBeRawPtr<CSSBasicShape> CSSPropertyParser::parseBasicShapeInset(CSSParserValueList* args)
{
ASSERT(args);
RefPtrWillBeRawPtr<CSSBasicShapeInset> shape = CSSBasicShapeInset::create();
CSSParserValue* argument = args->current();
WillBeHeapVector<RefPtrWillBeMember<CSSPrimitiveValue>> widthArguments;
bool hasRoundedInset = false;
while (argument) {
if (argument->unit == CSSPrimitiveValue::CSS_IDENT && 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, args);
return shape;
}
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, createPrimitiveValuePair(cssValuePool().createIdentifierValue(CSSValueLegacy), cssValuePool().createIdentifierValue(value->id)), 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, createPrimitiveValuePair(position, overflowAlignmentKeyword), 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<CSSBasicShape> 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<CSSBasicShapeCircle> shape = CSSBasicShapeCircle::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()) {
ASSERT(centerX->isPrimitiveValue());
ASSERT(centerY->isPrimitiveValue());
shape->setCenterX(toCSSPrimitiveValue(centerX.get()));
shape->setCenterY(toCSSPrimitiveValue(centerY.get()));
} else {
return nullptr;
}
} else {
return nullptr;
}
}
return shape;
}
PassRefPtrWillBeRawPtr<CSSBasicShape> 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<CSSBasicShapeEllipse> shape = CSSBasicShapeEllipse::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;
ASSERT(centerX->isPrimitiveValue());
ASSERT(centerY->isPrimitiveValue());
shape->setCenterX(toCSSPrimitiveValue(centerX.get()));
shape->setCenterY(toCSSPrimitiveValue(centerY.get()));
}
return shape;
}
PassRefPtrWillBeRawPtr<CSSBasicShape> CSSPropertyParser::parseBasicShapePolygon(CSSParserValueList* args)
{
ASSERT(args);
unsigned size = args->size();
if (!size)
return nullptr;
RefPtrWillBeRawPtr<CSSBasicShapePolygon> shape = CSSBasicShapePolygon::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;
}
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->unit == CSSParserValue::Function && !shapeFound) {
// parseBasicShape already asks for the next value list item.
RefPtrWillBeRawPtr<CSSPrimitiveValue> 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<CSSPrimitiveValue> CSSPropertyParser::parseBasicShape()
{
CSSParserValue* value = m_valueList->current();
ASSERT(value->unit == CSSParserValue::Function);
CSSParserValueList* args = value->function->args.get();
if (!args)
return nullptr;
RefPtrWillBeRawPtr<CSSBasicShape> 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 cssValuePool().createValue(shape.release());
}
// [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family'
bool CSSPropertyParser::parseFont(bool important)
{
// Let's check if there is an inherit or initial somewhere in the shorthand.
for (unsigned i = 0; i < m_valueList->size(); ++i) {
if (m_valueList->valueAt(i)->id == CSSValueInherit || m_valueList->valueAt(i)->id == CSSValueInitial)
return false;
}
ShorthandScope scope(this, CSSPropertyFont);
// Optional font-style, font-variant and font-weight.
bool fontStyleParsed = false;
bool fontVariantParsed = false;
bool fontWeightParsed = false;
bool fontStretchParsed = false;
CSSParserValue* value = m_valueList->current();
for (; value; value = m_valueList->next()) {
if (!fontStyleParsed && CSSParserFastPaths::isValidKeywordPropertyAndValue(CSSPropertyFontStyle, value->id)) {
addProperty(CSSPropertyFontStyle, cssValuePool().createIdentifierValue(value->id), important);
fontStyleParsed = true;
} else if (!fontVariantParsed && (value->id == CSSValueNormal || value->id == CSSValueSmallCaps)) {
// Font variant in the shorthand is particular, it only accepts normal or small-caps.
addProperty(CSSPropertyFontVariant, cssValuePool().createIdentifierValue(value->id), important);
fontVariantParsed = true;
} else if (!fontWeightParsed && parseFontWeight(important)) {
fontWeightParsed = true;
} else if (!fontStretchParsed && CSSParserFastPaths::isValidKeywordPropertyAndValue(CSSPropertyFontStretch, value->id)) {
addProperty(CSSPropertyFontStretch, cssValuePool().createIdentifierValue(value->id), important);
fontStretchParsed = true;
} else {
break;
}
}
if (!value)
return false;
if (!fontStyleParsed)
addProperty(CSSPropertyFontStyle, cssValuePool().createIdentifierValue(CSSValueNormal), important, true);
if (!fontVariantParsed)
addProperty(CSSPropertyFontVariant, cssValuePool().createIdentifierValue(CSSValueNormal), important, true);
if (!fontWeightParsed)
addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierValue(CSSValueNormal), important, true);
if (!fontStretchParsed)
addProperty(CSSPropertyFontStretch, cssValuePool().createIdentifierValue(CSSValueNormal), important, true);
// Now a font size _must_ come.
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if (!parseFontSize(important))
return false;
value = m_valueList->current();
if (!value)
return false;
if (isForwardSlashOperator(value)) {
// The line-height property.
value = m_valueList->next();
if (!value)
return false;
RefPtrWillBeRawPtr<CSSPrimitiveValue> lineHeight = parseLineHeight();
if (!lineHeight)
return false;
addProperty(CSSPropertyLineHeight, lineHeight.release(), important);
} else {
addProperty(CSSPropertyLineHeight, cssValuePool().createIdentifierValue(CSSValueNormal), important, true);
}
// Font family must come now.
RefPtrWillBeRawPtr<CSSValue> parsedFamilyValue = parseFontFamily();
if (!parsedFamilyValue)
return false;
addProperty(CSSPropertyFontFamily, parsedFamilyValue.release(), important);
// FIXME: http://www.w3.org/TR/2011/WD-css3-fonts-20110324/#font-prop requires that
// "font-stretch", "font-size-adjust", and "font-kerning" be reset to their initial values
// but we don't seem to support them at the moment. They should also be added here once implemented.
if (m_valueList->current())
return false;
return true;
}
void CSSPropertyParser::parseSystemFont(bool important)
{
ASSERT(m_valueList->size() == 1);
CSSValueID systemFontID = m_valueList->valueAt(0)->id;
ASSERT(systemFontID >= CSSValueCaption && systemFontID <= CSSValueStatusBar);
m_valueList->next();
FontStyle fontStyle = FontStyleNormal;
FontWeight fontWeight = FontWeightNormal;
float fontSize = 0;
AtomicString fontFamily;
LayoutTheme::theme().systemFont(systemFontID, fontStyle, fontWeight, fontSize, fontFamily);
ShorthandScope scope(this, CSSPropertyFont);
addProperty(CSSPropertyFontStyle, cssValuePool().createIdentifierValue(fontStyle == FontStyleItalic ? CSSValueItalic : CSSValueNormal), important);
addProperty(CSSPropertyFontWeight, cssValuePool().createValue(fontWeight), important);
addProperty(CSSPropertyFontSize, cssValuePool().createValue(fontSize, CSSPrimitiveValue::CSS_PX), important);
RefPtrWillBeRawPtr<CSSValueList> fontFamilyList = CSSValueList::createCommaSeparated();
fontFamilyList->append(cssValuePool().createFontFamilyValue(fontFamily));
addProperty(CSSPropertyFontFamily, fontFamilyList.release(), important);
addProperty(CSSPropertyFontStretch, cssValuePool().createIdentifierValue(CSSValueNormal), important);
addProperty(CSSPropertyFontVariant, cssValuePool().createIdentifierValue(CSSValueNormal), important);
addProperty(CSSPropertyLineHeight, cssValuePool().createIdentifierValue(CSSValueNormal), important);
}
class FontFamilyValueBuilder {
DISALLOW_ALLOCATION();
public:
FontFamilyValueBuilder(CSSValueList* list)
: m_list(list)
{
}
void add(const CSSParserString& string)
{
if (!m_builder.isEmpty())
m_builder.append(' ');
if (string.is8Bit()) {
m_builder.append(string.characters8(), string.length());
return;
}
m_builder.append(string.characters16(), string.length());
}
void commit()
{
if (m_builder.isEmpty())
return;
m_list->append(cssValuePool().createFontFamilyValue(m_builder.toString()));
m_builder.clear();
}
private:
StringBuilder m_builder;
CSSValueList* m_list;
};
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseFontFamily()
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
CSSParserValue* value = m_valueList->current();
FontFamilyValueBuilder familyBuilder(list.get());
bool inFamily = false;
while (value) {
CSSParserValue* nextValue = m_valueList->next();
bool nextValBreaksFont = !nextValue || isComma(nextValue);
bool nextValIsFontName = nextValue &&
((nextValue->id >= CSSValueSerif && nextValue->id <= CSSValueWebkitBody) ||
(nextValue->unit == CSSPrimitiveValue::CSS_STRING || nextValue->unit == CSSPrimitiveValue::CSS_IDENT));
if (isCSSWideKeyword(*value) && !inFamily) {
if (nextValBreaksFont)
return nullptr;
else if (nextValIsFontName)
value = nextValue;
continue;
}
if (value->id >= CSSValueSerif && value->id <= CSSValueWebkitBody) {
if (inFamily)
familyBuilder.add(value->string);
else if (nextValBreaksFont || !nextValIsFontName)
list->append(cssValuePool().createIdentifierValue(value->id));
else {
familyBuilder.commit();
familyBuilder.add(value->string);
inFamily = true;
}
} else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
// Strings never share in a family name.
inFamily = false;
familyBuilder.commit();
list->append(cssValuePool().createFontFamilyValue(value->string));
} else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
if (inFamily)
familyBuilder.add(value->string);
else if (nextValBreaksFont || !nextValIsFontName)
list->append(cssValuePool().createFontFamilyValue(value->string));
else {
familyBuilder.commit();
familyBuilder.add(value->string);
inFamily = true;
}
} else {
break;
}
if (!nextValue)
break;
if (nextValBreaksFont) {
value = m_valueList->next();
familyBuilder.commit();
inFamily = false;
}
else if (nextValIsFontName)
value = nextValue;
else
break;
}
familyBuilder.commit();
if (!list->length() || (m_ruleType == StyleRule::FontFace && list->length() > 1))
list = nullptr;
return list.release();
}
PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parseLineHeight()
{
CSSParserValue* value = m_valueList->current();
CSSValueID id = value->id;
// normal | <number> | <length> | <percentage> | inherit
if (id == CSSValueNormal) {
m_valueList->next();
return cssValuePool().createIdentifierValue(id);
}
if (!validUnit(value, FNumber | FLength | FPercent | FNonNeg))
return nullptr;
// The line-height property can accept both percents and numbers but additive opertaions are
// not permitted on them in calc() expressions.
if (m_parsedCalculation && m_parsedCalculation->category() == CalcPercentNumber) {
m_parsedCalculation.release();
return nullptr;
}
m_valueList->next();
return createPrimitiveNumericValue(value);
}
bool CSSPropertyParser::parseFontSize(bool important)
{
CSSParserValue* value = m_valueList->current();
CSSValueID id = value->id;
bool validPrimitive = false;
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if (id >= CSSValueXxSmall && id <= CSSValueLarger)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FPercent | FNonNeg | (inShorthand() ? FUnknown : FUnitlessQuirk));
if (validPrimitive && (!m_valueList->next() || inShorthand()))
addProperty(CSSPropertyFontSize, parseValidPrimitive(id, value), important);
return validPrimitive;
}
bool CSSPropertyParser::parseFontVariant(bool important)
{
RefPtrWillBeRawPtr<CSSValueList> values = nullptr;
if (m_valueList->size() > 1)
values = CSSValueList::createCommaSeparated();
bool expectComma = false;
for (CSSParserValue* val = m_valueList->current(); val; val = m_valueList->current()) {
RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedValue = nullptr;
if (!expectComma) {
expectComma = true;
if (val->id == CSSValueNormal || val->id == CSSValueSmallCaps)
parsedValue = cssValuePool().createIdentifierValue(val->id);
else if (val->id == CSSValueAll && !values) {
// FIXME: CSSPropertyParser::parseFontVariant() implements
// the old css3 draft:
// http://www.w3.org/TR/2002/WD-css3-webfonts-20020802/#font-variant
// 'all' is only allowed in @font-face and with no other values. Make a value list to
// indicate that we are in the @font-face case.
values = CSSValueList::createCommaSeparated();
parsedValue = cssValuePool().createIdentifierValue(val->id);
}
} else if (consumeComma(m_valueList)) {
expectComma = false;
continue;
}
if (!parsedValue)
return false;
m_valueList->next();
if (values)
values->append(parsedValue.release());
else {
addProperty(CSSPropertyFontVariant, parsedValue.release(), important);
return true;
}
}
if (values && values->length()) {
if (m_ruleType != StyleRule::FontFace)
return false;
addProperty(CSSPropertyFontVariant, values.release(), important);
return true;
}
return false;
}
bool CSSPropertyParser::parseFontWeight(bool important)
{
CSSParserValue* value = m_valueList->current();
if (value->id >= CSSValueNormal && value->id <= CSSValueLighter) {
addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierValue(value->id), important);
return true;
}
if (value->unit == CSSPrimitiveValue::CSS_NUMBER) {
int weight = static_cast<int>(value->fValue);
if (!(weight % 100) && weight >= 100 && weight <= 900) {
addProperty(CSSPropertyFontWeight, cssValuePool().createIdentifierValue(static_cast<CSSValueID>(CSSValue100 + weight / 100 - 1)), important);
return true;
}
}
return false;
}
bool CSSPropertyParser::parseFontFaceSrcURI(CSSValueList* valueList)
{
RefPtrWillBeRawPtr<CSSFontFaceSrcValue> uriValue(CSSFontFaceSrcValue::create(completeURL(m_valueList->current()->string), m_context.shouldCheckContentSecurityPolicy()));
uriValue->setReferrer(m_context.referrer());
CSSParserValue* value = m_valueList->next();
if (!value || value->unit != CSSParserValue::Function || value->function->id != CSSValueFormat) {
valueList->append(uriValue.release());
return true;
}
// FIXME: http://www.w3.org/TR/2011/WD-css3-fonts-20111004/ says that format() contains a comma-separated list of strings,
// but CSSFontFaceSrcValue stores only one format. Allowing one format for now.
CSSParserValueList* args = value->function->args.get();
if (!args || args->size() != 1 || (args->current()->unit != CSSPrimitiveValue::CSS_STRING && args->current()->unit != CSSPrimitiveValue::CSS_IDENT))
return false;
uriValue->setFormat(args->current()->string);
valueList->append(uriValue.release());
m_valueList->next();
return true;
}
bool CSSPropertyParser::parseFontFaceSrcLocal(CSSValueList* valueList)
{
CSSParserValueList* args = m_valueList->current()->function->args.get();
if (!args || !args->size())
return false;
m_valueList->next();
ContentSecurityPolicyDisposition shouldCheckContentSecurityPolicy = m_context.shouldCheckContentSecurityPolicy();
if (args->size() == 1 && args->current()->unit == CSSPrimitiveValue::CSS_STRING)
valueList->append(CSSFontFaceSrcValue::createLocal(args->current()->string, shouldCheckContentSecurityPolicy));
else if (args->current()->unit == CSSPrimitiveValue::CSS_IDENT) {
StringBuilder builder;
for (CSSParserValue* localValue = args->current(); localValue; localValue = args->next()) {
if (localValue->unit != CSSPrimitiveValue::CSS_IDENT)
return false;
if (!builder.isEmpty())
builder.append(' ');
builder.append(localValue->string);
}
valueList->append(CSSFontFaceSrcValue::createLocal(builder.toString(), shouldCheckContentSecurityPolicy));
} else
return false;
return true;
}
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseFontFaceSrc()
{
RefPtrWillBeRawPtr<CSSValueList> values(CSSValueList::createCommaSeparated());
while (true) {
CSSParserValue* value = m_valueList->current();
if (!value)
return nullptr;
if (value->unit == CSSPrimitiveValue::CSS_URI) {
if (!parseFontFaceSrcURI(values.get()))
return nullptr;
} else if (value->unit == CSSParserValue::Function && value->function->id == CSSValueLocal) {
if (!parseFontFaceSrcLocal(values.get()))
return nullptr;
} else {
return nullptr;
}
if (!m_valueList->current())
return values.release();
if (!consumeComma(m_valueList))
return nullptr;
}
}
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseFontFaceUnicodeRange()
{
RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
do {
CSSParserValue* current = m_valueList->current();
if (!current || current->unit != CSSParserValue::UnicodeRange)
return nullptr;
UChar32 start = current->m_unicodeRange.start;
UChar32 end = current->m_unicodeRange.end;
if (start > end)
return nullptr;
values->append(CSSUnicodeRangeValue::create(start, end));
m_valueList->next();
} while (consumeComma(m_valueList));
return values.release();
}
bool CSSPropertyParser::isCalculation(CSSParserValue* value)
{
return (value->unit == CSSParserValue::Function)
&& (value->function->id == CSSValueCalc
|| value->function->id == CSSValueWebkitCalc);
}
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::CSS_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::CSS_NUMBER
&& value->fValue >= 0. && value->fValue < 1000000. && value->isInt) {
String str = String::format("%06d", static_cast<int>(value->fValue));
return Color::parseHexColor(str, result);
} else if (acceptQuirkyColors && value->unit == CSSParserValue::DimensionList) {
CSSParserValue* numberToken = value->valueList->valueAt(0);
CSSParserValue* unitToken = value->valueList->valueAt(1);
ASSERT(numberToken->unit == CSSPrimitiveValue::CSS_NUMBER);
ASSERT(unitToken->unit == CSSPrimitiveValue::CSS_IDENT);
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);
} else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
Color color;
if (!color.setNamedColor(value->string))
return acceptQuirkyColors && Color::parseHexColor(value->string, result);
result = color.rgb();
return true;
} else if (value->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);
} else if (value->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->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->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->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;
}
// This class tracks parsing state for shadow values. If it goes out of scope (e.g., due to an early return)
// without the allowBreak bit being set, then it will clean up all of the objects and destroy them.
class ShadowParseContext {
STACK_ALLOCATED();
public:
ShadowParseContext(CSSPropertyID prop)
: property(prop)
, allowX(true)
, allowY(false)
, allowBlur(false)
, allowSpread(false)
, allowColor(true)
, allowStyle(prop == CSSPropertyBoxShadow)
, allowBreak(true)
{
}
bool allowLength() { return allowX || allowY || allowBlur || allowSpread; }
void commitValue()
{
// Handle the ,, case gracefully by doing nothing.
if (x || y || blur || spread || color || style) {
if (!values)
values = CSSValueList::createCommaSeparated();
// Construct the current shadow value and add it to the list.
values->append(CSSShadowValue::create(x.release(), y.release(), blur.release(), spread.release(), style.release(), color.release()));
}
// Now reset for the next shadow value.
x = nullptr;
y = nullptr;
blur = nullptr;
spread = nullptr;
style = nullptr;
color = nullptr;
allowX = true;
allowColor = true;
allowBreak = true;
allowY = false;
allowBlur = false;
allowSpread = false;
allowStyle = property == CSSPropertyBoxShadow;
}
void commitLength(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> val)
{
if (allowX) {
x = val;
allowX = false;
allowY = true;
allowColor = false;
allowStyle = false;
allowBreak = false;
} else if (allowY) {
y = val;
allowY = false;
allowBlur = true;
allowColor = true;
allowStyle = property == CSSPropertyBoxShadow;
allowBreak = true;
} else if (allowBlur) {
blur = val;
allowBlur = false;
allowSpread = property == CSSPropertyBoxShadow;
} else if (allowSpread) {
spread = val;
allowSpread = false;
}
}
void commitColor(PassRefPtrWillBeRawPtr<CSSPrimitiveValue> val)
{
color = val;
allowColor = false;
if (allowX) {
allowStyle = false;
allowBreak = false;
} else {
allowBlur = false;
allowSpread = false;
allowStyle = property == CSSPropertyBoxShadow;
}
}
void commitStyle(CSSParserValue* v)
{
style = cssValuePool().createIdentifierValue(v->id);
allowStyle = false;
if (allowX)
allowBreak = false;
else {
allowBlur = false;
allowSpread = false;
allowColor = false;
}
}
CSSPropertyID property;
RefPtrWillBeMember<CSSValueList> values;
RefPtrWillBeMember<CSSPrimitiveValue> x;
RefPtrWillBeMember<CSSPrimitiveValue> y;
RefPtrWillBeMember<CSSPrimitiveValue> blur;
RefPtrWillBeMember<CSSPrimitiveValue> spread;
RefPtrWillBeMember<CSSPrimitiveValue> style;
RefPtrWillBeMember<CSSPrimitiveValue> color;
bool allowX;
bool allowY;
bool allowBlur;
bool allowSpread;
bool allowColor;
bool allowStyle; // inset or not.
bool allowBreak;
};
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseShadow(CSSParserValueList* valueList, CSSPropertyID propId)
{
ShadowParseContext context(propId);
for (CSSParserValue* val = valueList->current(); val; val = valueList->next()) {
// Check for a comma break first.
if (val->unit == CSSParserValue::Operator) {
if (val->iValue != ',' || !context.allowBreak) {
// Other operators aren't legal or we aren't done with the current shadow
// value. Treat as invalid.
return nullptr;
}
// The value is good. Commit it.
context.commitValue();
} else if (validUnit(val, FLength, HTMLStandardMode)) {
// We required a length and didn't get one. Invalid.
if (!context.allowLength())
return nullptr;
// Blur radius must be non-negative.
if (context.allowBlur && (m_parsedCalculation ? m_parsedCalculation->isNegative() : !validUnit(val, FLength | FNonNeg, HTMLStandardMode)))
return nullptr;
// A length is allowed here. Construct the value and add it.
RefPtrWillBeRawPtr<CSSPrimitiveValue> length = createPrimitiveNumericValue(val);
context.commitLength(length.release());
} else if (val->id == CSSValueInset) {
if (!context.allowStyle)
return nullptr;
context.commitStyle(val);
} else {
if (!context.allowColor)
return nullptr;
// The only other type of value that's ok is a color value.
RefPtrWillBeRawPtr<CSSPrimitiveValue> parsedColor = parseColor(val);
if (!parsedColor)
return nullptr;
context.commitColor(parsedColor.release());
}
}
if (context.allowBreak) {
context.commitValue();
if (context.values && context.values->length())
return context.values.release();
}
return nullptr;
}
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::CSS_PX);
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::CSS_PX);
} 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::CSS_PERCENTAGE);
addProperty(CSSPropertyFlexGrow, cssValuePool().createValue(clampTo<float>(flexGrow), CSSPrimitiveValue::CSS_NUMBER), important);
addProperty(CSSPropertyFlexShrink, cssValuePool().createValue(clampTo<float>(flexShrink), CSSPrimitiveValue::CSS_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 createPrimitiveValuePair(toCSSPrimitiveValue(xValue.get()), toCSSPrimitiveValue(yValue.get()), Pair::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<CSSPrimitiveValue> 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<CSSPrimitiveValue> 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<CSSPrimitiveValue> m_borderWidth;
RefPtrWillBeMember<CSSPrimitiveValue> 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->unit == CSSPrimitiveValue::CSS_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->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<CSSPrimitiveValue> borderWidth = nullptr;
if (parseBorderImageWidth(borderWidth))
context.commitBorderWidth(borderWidth.release());
}
if (!context.canAdvance() && context.requireOutset()) {
RefPtrWillBeRawPtr<CSSPrimitiveValue> 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 = createPrimitiveValuePair(firstValue, secondValue);
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;
// Now build a rect value to hold all four of our primitive values.
RefPtrWillBeRawPtr<Quad> quad = Quad::create();
quad->setTop(m_top);
quad->setRight(m_right);
quad->setBottom(m_bottom);
quad->setLeft(m_left);
// Make our new border image value now.
return CSSBorderImageSliceValue::create(cssValuePool().createValue(quad.release()), 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<CSSPrimitiveValue> 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;
// Now build a quad value to hold all four of our primitive values.
RefPtrWillBeRawPtr<Quad> quad = Quad::create();
quad->setTop(m_top);
quad->setRight(m_right);
quad->setBottom(m_bottom);
quad->setLeft(m_left);
// Make our new value now.
return cssValuePool().createValue(quad.release());
}
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<CSSPrimitiveValue>& 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<CSSPrimitiveValue>& result)
{
return parseBorderImageQuad(FLength | FNumber | FNonNeg | FPercent, result);
}
bool CSSPropertyParser::parseBorderImageOutset(RefPtrWillBeRawPtr<CSSPrimitiveValue>& 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->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, createPrimitiveValuePair(radii[0][0].release(), radii[1][0].release()), important);
addProperty(CSSPropertyBorderTopRightRadius, createPrimitiveValuePair(radii[0][1].release(), radii[1][1].release()), important);
addProperty(CSSPropertyBorderBottomRightRadius, createPrimitiveValuePair(radii[0][2].release(), radii[1][2].release()), important);
addProperty(CSSPropertyBorderBottomLeftRadius, createPrimitiveValuePair(radii[0][3].release(), radii[1][3].release()), important);
return true;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseCounter(int defaultValue)
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
while (m_valueList->current()) {
CSSParserValue* val = m_valueList->current();
if (val->unit != CSSPrimitiveValue::CSS_IDENT)
return nullptr;
RefPtrWillBeRawPtr<CSSPrimitiveValue> counterName = createPrimitiveCustomIdentValue(val);
m_valueList->next();
val = m_valueList->current();
int i = defaultValue;
if (val && validUnit(val, FInteger)) {
i = clampTo<int>(val->fValue);
m_valueList->next();
}
list->append(createPrimitiveValuePair(counterName.release(),
cssValuePool().createValue(i, CSSPrimitiveValue::CSS_NUMBER)));
}
if (!list->length())
return nullptr;
return list.release();
}
// 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->unit == CSSPrimitiveValue::CSS_IDENT) {
if ((a->id == CSSValueLeft && horizontal)
|| (a->id == CSSValueTop && !horizontal))
result = cssValuePool().createValue(0., CSSPrimitiveValue::CSS_PERCENTAGE);
else if ((a->id == CSSValueRight && horizontal)
|| (a->id == CSSValueBottom && !horizontal))
result = cssValuePool().createValue(100., CSSPrimitiveValue::CSS_PERCENTAGE);
else if (a->id == CSSValueCenter)
result = cssValuePool().createValue(50., CSSPrimitiveValue::CSS_PERCENTAGE);
} else if (a->unit == CSSPrimitiveValue::CSS_NUMBER || a->unit == CSSPrimitiveValue::CSS_PERCENTAGE) {
result = cssValuePool().createValue(a->fValue, static_cast<CSSPrimitiveValue::UnitType>(a->unit));
}
return result;
}
bool CSSPropertyParser::parseDeprecatedGradientColorStop(CSSParserValue* a, CSSGradientColorStop& stop)
{
if (a->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::CSS_NUMBER);
else
stop.m_position = cssValuePool().createValue(1, CSSPrimitiveValue::CSS_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::CSS_PERCENTAGE)
stop.m_position = cssValuePool().createValue(stopArg->fValue / 100, CSSPrimitiveValue::CSS_NUMBER);
else if (stopArg->unit == CSSPrimitiveValue::CSS_NUMBER)
stop.m_position = cssValuePool().createValue(stopArg->fValue, CSSPrimitiveValue::CSS_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->unit != CSSPrimitiveValue::CSS_IDENT)
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::CSS_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::CSS_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->unit != CSSPrimitiveValue::CSS_IDENT)
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->unit != CSSPrimitiveValue::CSS_IDENT)
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->unit == CSSPrimitiveValue::CSS_IDENT && 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->unit == CSSPrimitiveValue::CSS_IDENT) {
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->unit == CSSPrimitiveValue::CSS_IDENT && 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(toCSSPrimitiveValue(centerX.get()));
result->setFirstY(toCSSPrimitiveValue(centerY.get()));
// Right now, CSS radial gradients have the same start and end centers.
result->setSecondX(toCSSPrimitiveValue(centerX.get()));
result->setSecondY(toCSSPrimitiveValue(centerY.get()));
}
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 = parseGradientStopColor(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->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 == CSSValueWebkitCanvas)
return parseCanvas(valueList, value);
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::CSS_PERCENTAGE)
percentage = cssValuePool().createValue(clampTo<double>(value->fValue / 100, 0, 1), CSSPrimitiveValue::CSS_NUMBER);
else if (value->unit == CSSPrimitiveValue::CSS_NUMBER)
percentage = cssValuePool().createValue(clampTo<double>(value->fValue, 0, 1), CSSPrimitiveValue::CSS_NUMBER);
else
return false;
RefPtrWillBeRawPtr<CSSCrossfadeValue> result = CSSCrossfadeValue::create(fromImageValue, toImageValue);
result->setPercentage(percentage);
crossfade = result;
return true;
}
bool CSSPropertyParser::parseCanvas(CSSParserValueList* valueList, RefPtrWillBeRawPtr<CSSValue>& canvas)
{
// Walk the arguments.
CSSParserValueList* args = valueList->current()->function->args.get();
if (!args || args->size() != 1)
return false;
// The first argument is the canvas name. It is an identifier.
CSSParserValue* value = args->current();
if (!value || value->unit != CSSPrimitiveValue::CSS_IDENT)
return false;
canvas = CSSCanvasValue::create(value->string);
return true;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseImageSet(CSSParserValueList* valueList)
{
CSSParserValue* function = valueList->current();
if (function->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->unit != CSSPrimitiveValue::CSS_URI)
return nullptr;
RefPtrWillBeRawPtr<CSSValue> image = createCSSImageValueWithReferrer(arg->string, completeURL(arg->string));
imageSet->append(image);
arg = functionArgs->next();
if (!arg)
return nullptr;
if (arg->unit != CSSParserValue::DimensionList)
return nullptr;
ASSERT(arg->valueList->valueAt(0)->unit == CSSPrimitiveValue::CSS_NUMBER);
ASSERT(arg->valueList->valueAt(1)->unit == CSSPrimitiveValue::CSS_IDENT);
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::CSS_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<CSSValue> CSSPropertyParser::parseWillChange()
{
RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
if (m_valueList->current()->id == CSSValueAuto) {
// FIXME: This will be read back as an empty string instead of auto
return values.release();
}
// Every comma-separated list of CSS_IDENTs is a valid will-change value,
// unless the list includes an explicitly disallowed CSS_IDENT.
while (true) {
CSSParserValue* currentValue = m_valueList->current();
if (!currentValue || currentValue->unit != CSSPrimitiveValue::CSS_IDENT)
return nullptr;
CSSPropertyID unresolvedProperty = unresolvedCSSPropertyID(currentValue->string);
if (unresolvedProperty) {
ASSERT(CSSPropertyMetadata::isEnabledProperty(unresolvedProperty));
// Now "all" is used by both CSSValue and CSSPropertyValue.
// Need to return nullptr when currentValue is CSSPropertyAll.
if (unresolvedProperty == CSSPropertyWillChange || unresolvedProperty == CSSPropertyAll)
return nullptr;
values->append(cssValuePool().createIdentifierValue(unresolvedProperty));
} else {
switch (currentValue->id) {
case CSSValueNone:
case CSSValueAll:
case CSSValueAuto:
case CSSValueDefault:
case CSSValueInitial:
case CSSValueInherit:
return nullptr;
case CSSValueContents:
case CSSValueScrollPosition:
values->append(cssValuePool().createIdentifierValue(currentValue->id));
break;
default:
break;
}
}
if (!m_valueList->next())
break;
if (!consumeComma(m_valueList))
return nullptr;
}
return values.release();
}
PassRefPtrWillBeRawPtr<CSSFunctionValue> CSSPropertyParser::parseBuiltinFilterArguments(CSSParserValueList* args, CSSValueID filterType)
{
RefPtrWillBeRawPtr<CSSFunctionValue> filterValue = CSSFunctionValue::create(filterType);
ASSERT(args);
switch (filterType) {
case CSSValueGrayscale:
case CSSValueSepia:
case CSSValueSaturate:
case CSSValueInvert:
case CSSValueOpacity:
case CSSValueContrast: {
// One optional argument, 0-1 or 0%-100%, if missing use 100%.
if (args->size()) {
CSSParserValue* value = args->current();
// FIXME (crbug.com/397061): Support calc expressions like calc(10% + 0.5)
if (value->unit != CSSPrimitiveValue::CSS_PERCENTAGE && !validUnit(value, FNumber | FNonNeg))
return nullptr;
double amount = value->fValue;
if (amount < 0)
return nullptr;
// Saturate and Contrast allow values over 100%.
if (filterType != CSSValueSaturate
&& filterType != CSSValueContrast) {
double maxAllowed = value->unit == CSSPrimitiveValue::CSS_PERCENTAGE ? 100.0 : 1.0;
if (amount > maxAllowed)
return nullptr;
}
filterValue->append(cssValuePool().createValue(amount, static_cast<CSSPrimitiveValue::UnitType>(value->unit)));
}
break;
}
case CSSValueBrightness: {
// One optional argument, if missing use 100%.
if (args->size()) {
CSSParserValue* value = args->current();
// FIXME (crbug.com/397061): Support calc expressions like calc(10% + 0.5)
if (value->unit != CSSPrimitiveValue::CSS_PERCENTAGE && !validUnit(value, FNumber))
return nullptr;
filterValue->append(cssValuePool().createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitType>(value->unit)));
}
break;
}
case CSSValueHueRotate: {
// hue-rotate() takes one optional angle.
if (args->size()) {
CSSParserValue* argument = args->current();
if (!validUnit(argument, FAngle, HTMLStandardMode))
return nullptr;
filterValue->append(createPrimitiveNumericValue(argument));
}
break;
}
case CSSValueBlur: {
// Blur takes a single length. Zero parameters are allowed.
if (args->size()) {
CSSParserValue* argument = args->current();
if (!validUnit(argument, FLength | FNonNeg, HTMLStandardMode))
return nullptr;
filterValue->append(createPrimitiveNumericValue(argument));
}
break;
}
case CSSValueDropShadow: {
// drop-shadow() takes a single shadow.
RefPtrWillBeRawPtr<CSSValueList> shadowValueList = parseShadow(args, CSSPropertyWebkitFilter);
if (!shadowValueList || shadowValueList->length() != 1)
return nullptr;
filterValue->append((shadowValueList.release())->item(0));
break;
}
default:
return nullptr;
}
return filterValue.release();
}
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseFilter()
{
if (!m_valueList)
return nullptr;
// The filter is a list of functional primitives that specify individual operations.
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->unit != CSSPrimitiveValue::CSS_URI && (value->unit != CSSParserValue::Function || !value->function))
return nullptr;
// See if the specified primitive is one we understand.
if (value->unit == CSSPrimitiveValue::CSS_URI) {
RefPtrWillBeRawPtr<CSSFunctionValue> referenceFilterValue = CSSFunctionValue::create(CSSValueUrl);
referenceFilterValue->append(CSSSVGDocumentValue::create(value->string));
list->append(referenceFilterValue.release());
} else {
CSSValueID filterType = value->function->id;
unsigned maximumArgumentCount = filterType == CSSValueDropShadow ? 4 : 1;
CSSParserValueList* args = value->function->args.get();
if (!args || args->size() > maximumArgumentCount)
return nullptr;
RefPtrWillBeRawPtr<CSSFunctionValue> filterValue = parseBuiltinFilterArguments(args, filterType);
if (!filterValue)
return nullptr;
list->append(filterValue);
}
}
return list.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::CSS_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();
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseTouchAction()
{
CSSParserValue* value = m_valueList->current();
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
if (m_valueList->size() == 1 && value && (value->id == CSSValueAuto || value->id == CSSValueNone || value->id == CSSValueManipulation)) {
list->append(cssValuePool().createIdentifierValue(value->id));
m_valueList->next();
return list.release();
}
bool xSet = false;
bool ySet = false;
while (value) {
switch (value->id) {
case CSSValuePanX:
case CSSValuePanRight:
case CSSValuePanLeft: {
if (xSet)
return nullptr;
xSet = true;
if (value->id != CSSValuePanX && !RuntimeEnabledFeatures::cssTouchActionPanDirectionsEnabled())
return nullptr;
RefPtrWillBeRawPtr<CSSValue> panValue = cssValuePool().createIdentifierValue(value->id);
list->append(panValue.release());
break;
}
case CSSValuePanY:
case CSSValuePanDown:
case CSSValuePanUp: {
if (ySet)
return nullptr;
ySet = true;
if (value->id != CSSValuePanY && !RuntimeEnabledFeatures::cssTouchActionPanDirectionsEnabled())
return nullptr;
RefPtrWillBeRawPtr<CSSValue> panValue = cssValuePool().createIdentifierValue(value->id);
list->append(panValue.release());
break;
}
default:
return nullptr;
}
value = m_valueList->next();
}
if (list->length())
return list.release();
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseScrollBlocksOn()
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
CSSParserValue* value = m_valueList->current();
while (value) {
switch (value->id) {
case CSSValueStartTouch:
case CSSValueWheelEvent:
case CSSValueScrollEvent: {
RefPtrWillBeRawPtr<CSSValue> flagValue = cssValuePool().createIdentifierValue(value->id);
if (list->hasValue(flagValue.get()))
return nullptr;
list->append(flagValue.release());
break;
}
default:
return nullptr;
}
value = m_valueList->next();
}
ASSERT(list->length());
return list.release();
}
void CSSPropertyParser::addTextDecorationProperty(CSSPropertyID propId, PassRefPtrWillBeRawPtr<CSSValue> value, bool important)
{
// The text-decoration-line property takes priority over text-decoration, unless the latter has important priority set.
if (propId == CSSPropertyTextDecoration && !important && !inShorthand()) {
for (unsigned i = 0; i < m_parsedProperties.size(); ++i) {
if (m_parsedProperties[i].id() == CSSPropertyTextDecorationLine)
return;
}
}
addProperty(propId, value, important);
}
bool CSSPropertyParser::parseTextDecoration(CSSPropertyID propId, bool important)
{
ASSERT(propId != CSSPropertyTextDecorationLine || RuntimeEnabledFeatures::css3TextDecorationsEnabled());
CSSParserValue* value = m_valueList->current();
if (value && value->id == CSSValueNone) {
addTextDecorationProperty(propId, cssValuePool().createIdentifierValue(CSSValueNone), important);
m_valueList->next();
return true;
}
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
bool isValid = true;
while (isValid && value) {
switch (value->id) {
case CSSValueUnderline:
case CSSValueOverline:
case CSSValueLineThrough:
case CSSValueBlink:
list->append(cssValuePool().createIdentifierValue(value->id));
break;
default:
isValid = false;
break;
}
if (isValid)
value = m_valueList->next();
}
// Values are either valid or in shorthand scope.
if (list->length() && (isValid || inShorthand())) {
addTextDecorationProperty(propId, list.release(), important);
return true;
}
return false;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseTextEmphasisStyle()
{
RefPtrWillBeRawPtr<CSSPrimitiveValue> fill = nullptr;
RefPtrWillBeRawPtr<CSSPrimitiveValue> shape = nullptr;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->unit == CSSPrimitiveValue::CSS_STRING) {
if (fill || shape)
return nullptr;
m_valueList->next();
return createPrimitiveStringValue(value);
}
if (value->id == CSSValueNone) {
if (fill || shape)
return nullptr;
m_valueList->next();
return cssValuePool().createIdentifierValue(CSSValueNone);
}
if (value->id == CSSValueOpen || value->id == CSSValueFilled) {
if (fill)
return nullptr;
fill = cssValuePool().createIdentifierValue(value->id);
} else if (value->id == CSSValueDot || value->id == CSSValueCircle || value->id == CSSValueDoubleCircle || value->id == CSSValueTriangle || value->id == CSSValueSesame) {
if (shape)
return nullptr;
shape = cssValuePool().createIdentifierValue(value->id);
} else {
break;
}
}
if (fill && shape) {
RefPtrWillBeRawPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
parsedValues->append(fill.release());
parsedValues->append(shape.release());
return parsedValues.release();
}
if (fill)
return fill.release();
if (shape)
return shape.release();
return nullptr;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseTextIndent()
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
bool hasLengthOrPercentage = false;
bool hasEachLine = false;
bool hasHanging = false;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
// <length> | <percentage> | inherit when RuntimeEnabledFeatures::css3TextEnabled() returns false
if (!hasLengthOrPercentage && validUnit(value, FLength | FPercent | FUnitlessQuirk)) {
list->append(createPrimitiveNumericValue(value));
hasLengthOrPercentage = true;
continue;
}
// [ <length> | <percentage> ] && hanging? && each-line? | inherit
// when RuntimeEnabledFeatures::css3TextEnabled() returns true
if (RuntimeEnabledFeatures::css3TextEnabled()) {
if (!hasEachLine && value->id == CSSValueEachLine) {
list->append(cssValuePool().createIdentifierValue(CSSValueEachLine));
hasEachLine = true;
continue;
}
if (!hasHanging && value->id == CSSValueHanging) {
list->append(cssValuePool().createIdentifierValue(CSSValueHanging));
hasHanging = true;
continue;
}
}
return nullptr;
}
if (!hasLengthOrPercentage)
return nullptr;
return list.release();
}
PassRefPtrWillBeRawPtr<CSSLineBoxContainValue> CSSPropertyParser::parseLineBoxContain()
{
LineBoxContain lineBoxContain = LineBoxContainNone;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
LineBoxContainFlags flag;
if (value->id == CSSValueBlock) {
flag = LineBoxContainBlock;
} else if (value->id == CSSValueInline) {
flag = LineBoxContainInline;
} else if (value->id == CSSValueFont) {
flag = LineBoxContainFont;
} else if (value->id == CSSValueGlyphs) {
flag = LineBoxContainGlyphs;
} else if (value->id == CSSValueReplaced) {
flag = LineBoxContainReplaced;
} else if (value->id == CSSValueInlineBox) {
flag = LineBoxContainInlineBox;
} else {
return nullptr;
}
if (lineBoxContain & flag)
return nullptr;
lineBoxContain |= flag;
}
ASSERT(lineBoxContain);
return CSSLineBoxContainValue::create(lineBoxContain);
}
bool CSSPropertyParser::parseFontFeatureTag(CSSValueList* settings)
{
// Feature tag name consists of 4-letter characters.
static const unsigned tagNameLength = 4;
CSSParserValue* value = m_valueList->current();
// Feature tag name comes first
if (value->unit != CSSPrimitiveValue::CSS_STRING)
return false;
if (value->string.length() != tagNameLength)
return false;
for (unsigned i = 0; i < tagNameLength; ++i) {
// Limits the range of characters to 0x20-0x7E, following the tag name rules defiend in the OpenType specification.
UChar character = value->string[i];
if (character < 0x20 || character > 0x7E)
return false;
}
AtomicString tag = value->string;
int tagValue = 1;
// Feature tag values could follow: <integer> | on | off
value = m_valueList->next();
if (value) {
if (value->unit == CSSPrimitiveValue::CSS_NUMBER && value->isInt && value->fValue >= 0) {
tagValue = clampTo<int>(value->fValue);
if (tagValue < 0)
return false;
m_valueList->next();
} else if (value->id == CSSValueOn || value->id == CSSValueOff) {
tagValue = value->id == CSSValueOn;
m_valueList->next();
}
}
settings->append(CSSFontFeatureValue::create(tag, tagValue));
return true;
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseFontFeatureSettings()
{
RefPtrWillBeRawPtr<CSSValueList> settings = CSSValueList::createCommaSeparated();
while (true) {
if (!m_valueList->current() || !parseFontFeatureTag(settings.get()))
return nullptr;
if (!m_valueList->current())
break;
if (!consumeComma(m_valueList))
return nullptr;
}
return settings.release();
}
bool CSSPropertyParser::parseFontVariantLigatures(bool important)
{
RefPtrWillBeRawPtr<CSSValueList> ligatureValues = CSSValueList::createSpaceSeparated();
bool sawCommonLigaturesValue = false;
bool sawDiscretionaryLigaturesValue = false;
bool sawHistoricalLigaturesValue = false;
bool sawContextualLigaturesValue = false;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->unit != CSSPrimitiveValue::CSS_IDENT)
return false;
switch (value->id) {
case CSSValueNoCommonLigatures:
case CSSValueCommonLigatures:
if (sawCommonLigaturesValue)
return false;
sawCommonLigaturesValue = true;
ligatureValues->append(cssValuePool().createIdentifierValue(value->id));
break;
case CSSValueNoDiscretionaryLigatures:
case CSSValueDiscretionaryLigatures:
if (sawDiscretionaryLigaturesValue)
return false;
sawDiscretionaryLigaturesValue = true;
ligatureValues->append(cssValuePool().createIdentifierValue(value->id));
break;
case CSSValueNoHistoricalLigatures:
case CSSValueHistoricalLigatures:
if (sawHistoricalLigaturesValue)
return false;
sawHistoricalLigaturesValue = true;
ligatureValues->append(cssValuePool().createIdentifierValue(value->id));
break;
case CSSValueNoContextual:
case CSSValueContextual:
if (sawContextualLigaturesValue)
return false;
sawContextualLigaturesValue = true;
ligatureValues->append(cssValuePool().createIdentifierValue(value->id));
break;
default:
return false;
}
}
if (!ligatureValues->length())
return false;
addProperty(CSSPropertyFontVariantLigatures, ligatureValues.release(), important);
return true;
}
bool CSSPropertyParser::parseCalculation(CSSParserValue* value, ValueRange range)
{
ASSERT(isCalculation(value));
CSSParserValueList* args = value->function->args.get();
if (!args || !args->size())
return false;
ASSERT(!m_parsedCalculation);
m_parsedCalculation = CSSCalcValue::create(args, range);
if (!m_parsedCalculation)
return false;
return true;
}
bool CSSPropertyParser::parseFontFaceDescriptor(CSSPropertyID propId)
{
CSSParserValue* value = m_valueList->current();
ASSERT(value);
CSSValueID id = value->id;
RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
switch (propId) {
case CSSPropertyFontFamily:
// <family-name>
// TODO(rwlbuis): check there is only one family-name
parsedValue = parseFontFamily();
break;
case CSSPropertySrc: // This is a list of urls or local references.
parsedValue = parseFontFaceSrc();
break;
case CSSPropertyUnicodeRange:
parsedValue = parseFontFaceUnicodeRange();
break;
case CSSPropertyFontWeight: // normal | bold | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900
if (m_valueList->size() != 1)
return false;
return parseFontWeight(false);
case CSSPropertyFontStretch:
case CSSPropertyFontStyle:
if (!CSSParserFastPaths::isValidKeywordPropertyAndValue(propId, id))
return false;
addProperty(propId, cssValuePool().createIdentifierValue(id), false);
return true;
case CSSPropertyFontVariant: // normal | small-caps | inherit
return parseFontVariant(false);
case CSSPropertyWebkitFontFeatureSettings:
if (id == CSSValueNormal) {
parsedValue = cssValuePool().createIdentifierValue(CSSValueNormal);
m_valueList->next();
} else {
parsedValue = parseFontFeatureSettings();
}
break;
default:
break;
}
if (!parsedValue || m_valueList->current())
return false;
addProperty(propId, parsedValue.release(), false);
return true;
}
bool CSSPropertyParser::parseViewportProperty(CSSPropertyID propId, bool important)
{
ASSERT(RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(m_context.mode()));
CSSParserValue* value = m_valueList->current();
if (!value)
return false;
CSSValueID id = value->id;
bool validPrimitive = false;
switch (propId) {
case CSSPropertyMinWidth: // auto | extend-to-zoom | <length> | <percentage>
case CSSPropertyMaxWidth:
case CSSPropertyMinHeight:
case CSSPropertyMaxHeight:
if (id == CSSValueAuto || id == CSSValueInternalExtendToZoom)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
break;
case CSSPropertyWidth: // shorthand
return parseViewportShorthand(propId, CSSPropertyMinWidth, CSSPropertyMaxWidth, important);
case CSSPropertyHeight:
return parseViewportShorthand(propId, CSSPropertyMinHeight, CSSPropertyMaxHeight, important);
case CSSPropertyMinZoom: // auto | <number> | <percentage>
case CSSPropertyMaxZoom:
case CSSPropertyZoom:
if (id == CSSValueAuto)
validPrimitive = true;
else
validPrimitive = validUnit(value, FNumber | FPercent | FNonNeg);
break;
case CSSPropertyUserZoom: // zoom | fixed
if (id == CSSValueZoom || id == CSSValueFixed)
validPrimitive = true;
break;
case CSSPropertyOrientation: // auto | portrait | landscape
if (id == CSSValueAuto || id == CSSValuePortrait || id == CSSValueLandscape)
validPrimitive = true;
default:
break;
}
RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
if (validPrimitive) {
parsedValue = parseValidPrimitive(id, value);
m_valueList->next();
}
if (parsedValue) {
if (!m_valueList->current() || inShorthand()) {
addProperty(propId, parsedValue.release(), important);
return true;
}
}
return false;
}
bool CSSPropertyParser::parseViewportShorthand(CSSPropertyID propId, CSSPropertyID first, CSSPropertyID second, bool important)
{
ASSERT(RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(m_context.mode()));
unsigned numValues = m_valueList->size();
if (numValues > 2)
return false;
ShorthandScope scope(this, propId);
if (!parseViewportProperty(first, important))
return false;
// If just one value is supplied, the second value
// is implicitly initialized with the first value.
if (numValues == 1)
m_valueList->previous();
return parseViewportProperty(second, important);
}
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 CSSPropertyAlignmentBaseline:
// auto | baseline | before-edge | text-before-edge | middle |
// central | after-edge | text-after-edge | ideographic | alphabetic |
// hanging | mathematical | inherit
if (id == CSSValueAuto || id == CSSValueBaseline || id == CSSValueMiddle
|| (id >= CSSValueBeforeEdge && id <= CSSValueMathematical))
validPrimitive = true;
break;
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 CSSPropertyDominantBaseline:
// auto | use-script | no-change | reset-size | ideographic |
// alphabetic | hanging | mathematical | central | middle |
// text-after-edge | text-before-edge | inherit
if (id == CSSValueAuto || id == CSSValueMiddle
|| (id >= CSSValueUseScript && id <= CSSValueResetSize)
|| (id >= CSSValueCentral && id <= CSSValueMathematical))
validPrimitive = true;
break;
case CSSPropertyEnableBackground:
// accumulate | new [x] [y] [width] [height] | inherit
if (id == CSSValueAccumulate) // TODO : new
validPrimitive = true;
break;
case CSSPropertyClipPath:
case CSSPropertyFilter:
case CSSPropertyMarkerStart:
case CSSPropertyMarkerMid:
case CSSPropertyMarkerEnd:
case CSSPropertyMask:
if (id == CSSValueNone) {
validPrimitive = true;
} else if (value->unit == CSSPrimitiveValue::CSS_URI) {
parsedValue = CSSPrimitiveValue::create(value->string, CSSPrimitiveValue::CSS_URI);
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyClipRule: // nonzero | evenodd | inherit
case CSSPropertyFillRule:
if (id == CSSValueNonzero || id == CSSValueEvenodd)
validPrimitive = true;
break;
case CSSPropertyStrokeMiterlimit: // <miterlimit> | inherit
validPrimitive = validUnit(value, FNumber | FNonNeg, SVGAttributeMode);
break;
case CSSPropertyStrokeLinejoin: // miter | round | bevel | inherit
if (id == CSSValueMiter || id == CSSValueRound || id == CSSValueBevel)
validPrimitive = true;
break;
case CSSPropertyStrokeLinecap: // butt | round | square | inherit
if (id == CSSValueButt || id == CSSValueRound || id == CSSValueSquare)
validPrimitive = true;
break;
case CSSPropertyStrokeOpacity: // <opacity-value> | inherit
case CSSPropertyFillOpacity:
case CSSPropertyStopOpacity:
case CSSPropertyFloodOpacity:
validPrimitive = validUnit(value, FNumber | FPercent, SVGAttributeMode);
break;
case CSSPropertyShapeRendering:
// auto | optimizeSpeed | crispEdges | geometricPrecision | inherit
if (id == CSSValueAuto || id == CSSValueOptimizeSpeed
|| id == CSSValueCrispEdges || id == CSSValueGeometricPrecision)
validPrimitive = true;
break;
case CSSPropertyColorRendering: // optimizeQuality | inherit
if (id == CSSValueAuto || id == CSSValueOptimizeSpeed
|| id == CSSValueOptimizeQuality)
validPrimitive = true;
break;
case CSSPropertyBufferedRendering: // auto | dynamic | static
if (id == CSSValueAuto || id == CSSValueDynamic || id == CSSValueStatic)
validPrimitive = true;
break;
case CSSPropertyColorInterpolation: // auto | sRGB | linearRGB | inherit
case CSSPropertyColorInterpolationFilters:
if (id == CSSValueAuto || id == CSSValueSRGB || id == CSSValueLinearRGB)
validPrimitive = true;
break;
/* Start of supported CSS properties with validation. This is needed for parseShortHand to work
* correctly and allows optimization in applyRule(..)
*/
case CSSPropertyTextAnchor: // start | middle | end | inherit
if (id == CSSValueStart || id == CSSValueMiddle || id == CSSValueEnd)
validPrimitive = true;
break;
case CSSPropertyGlyphOrientationVertical: // auto | <angle> | inherit
if (id == CSSValueAuto) {
validPrimitive = true;
break;
}
/* fallthrough intentional */
case CSSPropertyGlyphOrientationHorizontal: // <angle> (restricted to _deg_ per SVG 1.1 spec) | inherit
if (value->unit == CSSPrimitiveValue::CSS_DEG || value->unit == CSSPrimitiveValue::CSS_NUMBER) {
parsedValue = CSSPrimitiveValue::create(value->fValue, CSSPrimitiveValue::CSS_DEG);
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyFill: // <paint> | inherit
case CSSPropertyStroke: // <paint> | inherit
{
if (id == CSSValueNone) {
parsedValue = cssValuePool().createIdentifierValue(id);
} else if (value->unit == CSSPrimitiveValue::CSS_URI) {
if (m_valueList->next()) {
RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
values->append(CSSPrimitiveValue::create(value->string, CSSPrimitiveValue::CSS_URI));
if (m_valueList->current()->id == CSSValueNone)
parsedValue = cssValuePool().createIdentifierValue(m_valueList->current()->id);
else
parsedValue = parseColor(m_valueList->current());
if (parsedValue) {
values->append(parsedValue);
parsedValue = values;
}
}
if (!parsedValue)
parsedValue = CSSPrimitiveValue::create(value->string, CSSPrimitiveValue::CSS_URI);
} else {
parsedValue = parseColor(m_valueList->current());
}
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyStopColor: // TODO : icccolor
case CSSPropertyFloodColor:
case CSSPropertyLightingColor:
parsedValue = parseColor(m_valueList->current());
if (parsedValue)
m_valueList->next();
break;
case CSSPropertyPaintOrder:
if (m_valueList->size() == 1 && id == CSSValueNormal)
validPrimitive = true;
else if ((parsedValue = parsePaintOrder()))
m_valueList->next();
break;
case CSSPropertyVectorEffect: // none | non-scaling-stroke | inherit
if (id == CSSValueNone || id == CSSValueNonScalingStroke)
validPrimitive = true;
break;
case CSSPropertyWritingMode:
// lr-tb | rl_tb | tb-rl | lr | rl | tb | inherit
if (id == CSSValueLrTb || id == CSSValueRlTb || id == CSSValueTbRl || id == CSSValueLr || id == CSSValueRl || id == CSSValueTb)
validPrimitive = true;
break;
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;
case CSSPropertyMaskType: // luminance | alpha | inherit
if (id == CSSValueLuminance || id == CSSValueAlpha)
validPrimitive = true;
break;
/* shorthand properties */
case CSSPropertyMarker: {
ShorthandScope scope(this, propId);
CSSPropertyParser::ImplicitScope implicitScope(this);
if (!parseValue(CSSPropertyMarkerStart, important))
return false;
if (m_valueList->current()) {
rollbackLastProperties(1);
return false;
}
CSSValue* value = m_parsedProperties.last().value();
addProperty(CSSPropertyMarkerMid, value, important);
addProperty(CSSPropertyMarkerEnd, value, important);
return true;
}
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->unit == CSSPrimitiveValue::CSS_STRING)
parsedValue = CSSPrimitiveValue::create(value->string, (CSSPrimitiveValue::UnitType) value->unit);
else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
parsedValue = CSSPrimitiveValue::create(value->fValue, (CSSPrimitiveValue::UnitType) value->unit);
else if (value->unit == CSSPrimitiveValue::CSS_REMS || value->unit == CSSPrimitiveValue::CSS_CHS)
parsedValue = CSSPrimitiveValue::create(value->fValue, (CSSPrimitiveValue::UnitType)value->unit);
else if (value->unit == CSSPrimitiveValue::CSS_QEM)
parsedValue = CSSPrimitiveValue::createAllowingMarginQuirk(value->fValue, CSSPrimitiveValue::CSS_EMS);
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::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
ret->append(CSSPrimitiveValue::create(value->fValue, (CSSPrimitiveValue::UnitType) value->unit));
else if (value->unit == CSSPrimitiveValue::CSS_REMS || value->unit == CSSPrimitiveValue::CSS_CHS)
ret->append(CSSPrimitiveValue::create(value->fValue, (CSSPrimitiveValue::UnitType)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();
}
// normal | [ fill || stroke || markers ]
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parsePaintOrder() const
{
if (m_valueList->size() > 3)
return nullptr;
CSSParserValue* value = m_valueList->current();
ASSERT(value);
RefPtrWillBeRawPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
// The default paint-order is: Fill, Stroke, Markers.
bool seenFill = false, seenStroke = false, seenMarkers = false;
for (; value; value = m_valueList->next()) {
switch (value->id) {
case CSSValueNormal:
// normal inside [fill || stroke || markers] not valid
return nullptr;
case CSSValueFill:
if (seenFill)
return nullptr;
seenFill = true;
break;
case CSSValueStroke:
if (seenStroke)
return nullptr;
seenStroke = true;
break;
case CSSValueMarkers:
if (seenMarkers)
return nullptr;
seenMarkers = true;
break;
default:
return nullptr;
}
parsedValues->append(CSSPrimitiveValue::createIdentifier(value->id));
}
// fill out the rest of the paint order
if (!seenFill)
parsedValues->append(CSSPrimitiveValue::createIdentifier(CSSValueFill));
if (!seenStroke)
parsedValues->append(CSSPrimitiveValue::createIdentifier(CSSValueStroke));
if (!seenMarkers)
parsedValues->append(CSSPrimitiveValue::createIdentifier(CSSValueMarkers));
return parsedValues.release();
}
class TransformOperationInfo {
public:
TransformOperationInfo(CSSValueID id)
: m_validID(true)
, m_allowSingleArgument(false)
, m_argCount(1)
, m_unit(CSSPropertyParser::FUnknown)
{
switch (id) {
case CSSValueSkew:
m_unit = CSSPropertyParser::FAngle;
m_allowSingleArgument = true;
m_argCount = 3;
break;
case CSSValueScale:
m_unit = CSSPropertyParser::FNumber;
m_allowSingleArgument = true;
m_argCount = 3;
break;
case CSSValueSkewX:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueSkewY:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueMatrix:
m_unit = CSSPropertyParser::FNumber;
m_argCount = 11;
break;
case CSSValueRotate:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueScaleX:
m_unit = CSSPropertyParser::FNumber;
break;
case CSSValueScaleY:
m_unit = CSSPropertyParser::FNumber;
break;
case CSSValueScaleZ:
m_unit = CSSPropertyParser::FNumber;
break;
case CSSValueScale3d:
m_unit = CSSPropertyParser::FNumber;
m_argCount = 5;
break;
case CSSValueRotateX:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueRotateY:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueRotateZ:
m_unit = CSSPropertyParser::FAngle;
break;
case CSSValueMatrix3d:
m_unit = CSSPropertyParser::FNumber;
m_argCount = 31;
break;
case CSSValueRotate3d:
m_unit = CSSPropertyParser::FNumber;
m_argCount = 7;
break;
case CSSValueTranslate:
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_allowSingleArgument = true;
m_argCount = 3;
break;
case CSSValueTranslateX:
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
break;
case CSSValueTranslateY:
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
break;
case CSSValueTranslateZ:
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
break;
case CSSValuePerspective:
m_unit = CSSPropertyParser::FNumber;
break;
case CSSValueTranslate3d:
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_argCount = 5;
break;
default:
m_validID = false;
break;
}
}
bool validID() const { return m_validID; }
unsigned argCount() const { return m_argCount; }
CSSPropertyParser::Units unit() const { return m_unit; }
bool hasCorrectArgCount(unsigned argCount) { return m_argCount == argCount || (m_allowSingleArgument && argCount == 1); }
private:
bool m_validID;
bool m_allowSingleArgument;
unsigned m_argCount;
CSSPropertyParser::Units m_unit;
};
PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseTransform(bool useLegacyParsing)
{
if (!m_valueList)
return nullptr;
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
RefPtrWillBeRawPtr<CSSValue> parsedTransformValue = parseTransformValue(useLegacyParsing, value);
if (!parsedTransformValue)
return nullptr;
list->append(parsedTransformValue.release());
}
return list.release();
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseTransformValue(bool useLegacyParsing, CSSParserValue *value)
{
if (value->unit != CSSParserValue::Function || !value->function)
return nullptr;
// Every primitive requires at least one argument.
CSSParserValueList* args = value->function->args.get();
if (!args)
return nullptr;
// See if the specified primitive is one we understand.
CSSValueID type = value->function->id;
TransformOperationInfo info(type);
if (!info.validID())
return nullptr;
if (!info.hasCorrectArgCount(args->size()))
return nullptr;
// The transform is a list of functional primitives that specify transform operations.
// We collect a list of CSSFunctionValues, where each value specifies a single operation.
// Create the new CSSFunctionValue for this operation and add it to our list.
RefPtrWillBeRawPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(type);
// Snag our values.
CSSParserValue* a = args->current();
unsigned argNumber = 0;
while (a) {
CSSPropertyParser::Units unit = info.unit();
if (type == CSSValueRotate3d && argNumber == 3) {
// 4th param of rotate3d() is an angle rather than a bare number, validate it as such
if (!validUnit(a, FAngle, HTMLStandardMode))
return nullptr;
} else if (type == CSSValueTranslate3d && argNumber == 2) {
// 3rd param of translate3d() cannot be a percentage
if (!validUnit(a, FLength, HTMLStandardMode))
return nullptr;
} else if (type == CSSValueTranslateZ && !argNumber) {
// 1st param of translateZ() cannot be a percentage
if (!validUnit(a, FLength, HTMLStandardMode))
return nullptr;
} else if (type == CSSValuePerspective && !argNumber) {
// 1st param of perspective() must be a non-negative number (deprecated) or length.
if (!validUnit(a, FLength | FNonNeg, HTMLStandardMode)) {
if (useLegacyParsing && validUnit(a, FNumber | FNonNeg, HTMLStandardMode)) {
a->unit = CSSPrimitiveValue::CSS_PX;
} else {
return nullptr;
}
}
} else if (!validUnit(a, unit, HTMLStandardMode)) {
return nullptr;
}
// Add the value to the current transform operation.
transformValue->append(createPrimitiveNumericValue(a));
a = args->next();
if (!a)
break;
if (!isComma(a))
return nullptr;
a = args->next();
argNumber++;
}
return transformValue.release();
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseMotionPath()
{
CSSParserValue* value = m_valueList->current();
// FIXME: Add support for <url>, <basic-shape>, <geometry-box>.
if (value->unit != CSSParserValue::Function || value->function->id != CSSValuePath)
return nullptr;
// FIXME: Add support for <fill-rule>.
CSSParserValueList* functionArgs = value->function->args.get();
if (!functionArgs || functionArgs->size() != 1 || !functionArgs->current())
return nullptr;
CSSParserValue* arg = functionArgs->current();
if (arg->unit != CSSPrimitiveValue::CSS_STRING)
return nullptr;
String pathString = arg->string;
Path path;
if (!buildPathFromString(pathString, path))
return nullptr;
m_valueList->next();
return CSSPathValue::create(pathString);
}
PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseMotionRotation()
{
RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
bool hasAutoOrReverse = false;
bool hasAngle = false;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if ((value->id == CSSValueAuto || value->id == CSSValueReverse) && !hasAutoOrReverse) {
list->append(cssValuePool().createIdentifierValue(value->id));
hasAutoOrReverse = true;
} else if (validUnit(value, FAngle) && !hasAngle) {
list->append(createPrimitiveNumericValue(value));
hasAngle = true;
} else {
break;
}
}
if (!list->length())
return nullptr;
return list.release();
}
} // namespace blink