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// Copyright 2015 The Chromium Authors. All rights reserved.
// Copyright (C) 2016-2022 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "config.h"
#include "CSSPropertyParser.h"
#include "CSSBorderImageSliceValue.h"
#include "CSSBorderImageWidthValue.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSCustomPropertyValue.h"
#include "CSSFontPaletteValuesOverrideColorsValue.h"
#include "CSSFontStyleRangeValue.h"
#include "CSSFontVariantLigaturesParser.h"
#include "CSSFontVariantNumericParser.h"
#include "CSSGridLineNamesValue.h"
#include "CSSGridTemplateAreasValue.h"
#include "CSSOffsetRotateValue.h"
#include "CSSParserFastPaths.h"
#include "CSSParserIdioms.h"
#include "CSSPendingSubstitutionValue.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSPropertyParsing.h"
#include "CSSQuadValue.h"
#include "CSSTokenizer.h"
#include "CSSTransformListValue.h"
#include "CSSValuePair.h"
#include "CSSVariableParser.h"
#include "CSSVariableReferenceValue.h"
#include "FontFace.h"
#include "ParsingUtilities.h"
#include "Rect.h"
#include "StyleBuilder.h"
#include "StyleBuilderConverter.h"
#include "StylePropertyShorthand.h"
#include "StylePropertyShorthandFunctions.h"
#include "TimingFunction.h"
#include "TransformFunctions.h"
#include <memory>
#include <wtf/text/StringBuilder.h>
namespace WebCore {
bool isCustomPropertyName(StringView propertyName)
{
return propertyName.length() > 2 && propertyName.characterAt(0) == '-' && propertyName.characterAt(1) == '-';
}
static bool hasPrefix(const char* string, unsigned length, const char* prefix)
{
for (unsigned i = 0; i < length; ++i) {
if (!prefix[i])
return true;
if (string[i] != prefix[i])
return false;
}
return false;
}
template<typename CharacterType> static CSSPropertyID cssPropertyID(const CharacterType* characters, unsigned length)
{
char buffer[maxCSSPropertyNameLength];
for (unsigned i = 0; i != length; ++i) {
auto character = characters[i];
if (!character || !isASCII(character))
return CSSPropertyInvalid;
buffer[i] = toASCIILower(character);
}
return findCSSProperty(buffer, length);
}
// FIXME: Remove this mechanism entirely once we can do it without breaking the web.
static bool isAppleLegacyCSSValueKeyword(const char* characters, unsigned length)
{
return hasPrefix(characters + 1, length - 1, "apple-")
&& !hasPrefix(characters + 7, length - 7, "system")
&& !hasPrefix(characters + 7, length - 7, "pay")
&& !hasPrefix(characters + 7, length - 7, "wireless");
}
template<typename CharacterType> static CSSValueID cssValueKeywordID(const CharacterType* characters, unsigned length)
{
ASSERT(length > 0); // Otherwise buffer[0] would access uninitialized memory below.
char buffer[maxCSSValueKeywordLength + 1]; // 1 to turn "apple" into "webkit"
for (unsigned i = 0; i != length; ++i) {
auto character = characters[i];
if (!character || !isASCII(character))
return CSSValueInvalid;
buffer[i] = toASCIILower(character);
}
// In most cases, if the prefix is -apple-, change it to -webkit-. This makes the string one character longer.
if (buffer[0] == '-' && isAppleLegacyCSSValueKeyword(buffer, length)) {
memmove(buffer + 7, buffer + 6, length - 6);
memcpy(buffer + 1, "webkit", 6);
++length;
}
return findCSSValueKeyword(buffer, length);
}
CSSValueID cssValueKeywordID(StringView 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);
}
CSSPropertyID cssPropertyID(StringView string)
{
unsigned length = string.length();
if (!length)
return CSSPropertyInvalid;
if (length > maxCSSPropertyNameLength)
return CSSPropertyInvalid;
return string.is8Bit() ? cssPropertyID(string.characters8(), length) : cssPropertyID(string.characters16(), length);
}
using namespace CSSPropertyParserHelpers;
using namespace CSSPropertyParserHelpersWorkerSafe;
CSSPropertyParser::CSSPropertyParser(const CSSParserTokenRange& range, const CSSParserContext& context, Vector<CSSProperty, 256>* parsedProperties, bool consumeWhitespace)
: m_range(range)
, m_context(context)
, m_parsedProperties(parsedProperties)
{
if (consumeWhitespace)
m_range.consumeWhitespace();
}
void CSSPropertyParser::addProperty(CSSPropertyID property, CSSPropertyID currentShorthand, RefPtr<CSSValue>&& value, bool important, bool implicit)
{
int shorthandIndex = 0;
bool setFromShorthand = false;
if (currentShorthand) {
auto shorthands = matchingShorthandsForLonghand(property);
setFromShorthand = true;
if (shorthands.size() > 1)
shorthandIndex = indexOfShorthandForLonghand(currentShorthand, shorthands);
}
// Allow anything to be set from a shorthand (e.g. the CSS all property always sets everything,
// regardless of whether the longhands are enabled), and allow internal properties as we use
// them to handle certain DOM-exposed values (e.g. -webkit-font-size-delta from
// execCommand('FontSizeDelta')).
ASSERT(isExposed(property, &m_context.propertySettings) || setFromShorthand || isInternal(property));
if (value && !value->isImplicitInitialValue())
m_parsedProperties->append(CSSProperty(property, WTFMove(value), important, setFromShorthand, shorthandIndex, implicit));
else {
ASSERT(setFromShorthand);
m_parsedProperties->append(CSSProperty(property, Ref { CSSPrimitiveValue::implicitInitialValue() }, important, setFromShorthand, shorthandIndex, true));
}
}
void CSSPropertyParser::addExpandedProperty(CSSPropertyID shorthand, RefPtr<CSSValue>&& value, bool important, bool implicit)
{
for (auto longhand : shorthandForProperty(shorthand))
addProperty(longhand, shorthand, value.copyRef(), important, implicit);
}
bool CSSPropertyParser::parseValue(CSSPropertyID propertyID, bool important, const CSSParserTokenRange& range, const CSSParserContext& context, ParsedPropertyVector& parsedProperties, StyleRuleType ruleType)
{
int parsedPropertiesSize = parsedProperties.size();
CSSPropertyParser parser(range, context, &parsedProperties);
bool parseSuccess;
if (ruleType == StyleRuleType::FontFace)
parseSuccess = parser.parseFontFaceDescriptor(propertyID);
else if (ruleType == StyleRuleType::FontPaletteValues)
parseSuccess = parser.parseFontPaletteValuesDescriptor(propertyID);
else if (ruleType == StyleRuleType::CounterStyle)
parseSuccess = parser.parseCounterStyleDescriptor(propertyID);
else if (ruleType == StyleRuleType::Keyframe)
parseSuccess = parser.parseKeyframeDescriptor(propertyID, important);
else if (ruleType == StyleRuleType::Property)
parseSuccess = parser.parsePropertyDescriptor(propertyID);
else
parseSuccess = parser.parseValueStart(propertyID, important);
if (!parseSuccess)
parsedProperties.shrink(parsedPropertiesSize);
return parseSuccess;
}
static RefPtr<CSSPrimitiveValue> maybeConsumeCSSWideKeyword(CSSParserTokenRange& range)
{
CSSParserTokenRange rangeCopy = range;
CSSValueID valueID = rangeCopy.consumeIncludingWhitespace().id();
if (!rangeCopy.atEnd())
return nullptr;
if (!isCSSWideKeyword(valueID))
return nullptr;
range = rangeCopy;
return CSSPrimitiveValue::create(valueID);
}
RefPtr<CSSValue> CSSPropertyParser::parseSingleValue(CSSPropertyID property, const CSSParserTokenRange& range, const CSSParserContext& context)
{
CSSPropertyParser parser(range, context, nullptr);
if (auto value = maybeConsumeCSSWideKeyword(parser.m_range))
return value;
RefPtr<CSSValue> value = parser.parseSingleValue(property);
if (!value || !parser.m_range.atEnd())
return nullptr;
return value;
}
RefPtr<CSSCustomPropertyValue> CSSPropertyParser::parseTypedCustomPropertyValue(const AtomString& name, const CSSCustomPropertySyntax& syntax, const CSSParserTokenRange& tokens, Style::BuilderState& builderState, const CSSParserContext& context)
{
CSSPropertyParser parser(tokens, context, nullptr, false);
RefPtr<CSSCustomPropertyValue> value = parser.parseTypedCustomPropertyValue(name, syntax, builderState);
if (!value || !parser.m_range.atEnd())
return nullptr;
return value;
}
RefPtr<CSSCustomPropertyValue> CSSPropertyParser::parseTypedCustomPropertyInitialValue(const AtomString& name, const CSSCustomPropertySyntax& syntax, CSSParserTokenRange tokens, Style::BuilderState& builderState, const CSSParserContext& context)
{
if (syntax.isUniversal())
return CSSVariableParser::parseInitialValueForUniversalSyntax(name, tokens);
CSSPropertyParser parser(tokens, context, nullptr, false);
RefPtr<CSSCustomPropertyValue> value = parser.parseTypedCustomPropertyValue(name, syntax, builderState);
if (!value || !parser.m_range.atEnd())
return nullptr;
if (value->containsCSSWideKeyword())
return nullptr;
return value;
}
ComputedStyleDependencies CSSPropertyParser::collectParsedCustomPropertyValueDependencies(const CSSCustomPropertySyntax& syntax, const CSSParserTokenRange& tokens, const CSSParserContext& context)
{
CSSPropertyParser parser(tokens, context, nullptr);
return parser.collectParsedCustomPropertyValueDependencies(syntax);
}
bool CSSPropertyParser::isValidCustomPropertyValueForSyntax(const CSSCustomPropertySyntax& syntax, CSSParserTokenRange tokens, const CSSParserContext& context)
{
if (syntax.isUniversal())
return true;
CSSPropertyParser parser { tokens, context, nullptr };
return !!parser.consumeCustomPropertyValueWithSyntax(syntax).first;
}
bool CSSPropertyParser::parseValueStart(CSSPropertyID propertyID, bool important)
{
if (consumeCSSWideKeyword(propertyID, important))
return true;
CSSParserTokenRange originalRange = m_range;
bool isShorthand = WebCore::isShorthand(propertyID);
if (isShorthand) {
// Variable references will fail to parse here and will fall out to the variable ref parser below.
if (parseShorthand(propertyID, important))
return true;
} else {
RefPtr<CSSValue> parsedValue = parseSingleValue(propertyID);
if (parsedValue && m_range.atEnd()) {
addProperty(propertyID, CSSPropertyInvalid, WTFMove(parsedValue), important);
return true;
}
}
if (CSSVariableParser::containsValidVariableReferences(originalRange, m_context)) {
auto variable = CSSVariableReferenceValue::create(originalRange, m_context);
if (isShorthand)
addExpandedProperty(propertyID, CSSPendingSubstitutionValue::create(propertyID, WTFMove(variable)), important);
else
addProperty(propertyID, CSSPropertyInvalid, WTFMove(variable), important);
return true;
}
return false;
}
bool CSSPropertyParser::consumeCSSWideKeyword(CSSPropertyID propertyID, bool important)
{
CSSParserTokenRange rangeCopy = m_range;
auto value = maybeConsumeCSSWideKeyword(rangeCopy);
if (!value)
return false;
const StylePropertyShorthand& shorthand = shorthandForProperty(propertyID);
if (!shorthand.length()) {
if (CSSProperty::isDescriptorOnly(propertyID))
return false;
addProperty(propertyID, CSSPropertyInvalid, value.releaseNonNull(), important);
} else
addExpandedProperty(propertyID, value.releaseNonNull(), important);
m_range = rangeCopy;
return true;
}
RefPtr<CSSValue> CSSPropertyParser::parseSingleValue(CSSPropertyID property, CSSPropertyID currentShorthand)
{
return CSSPropertyParsing::parseStyleProperty(m_range, property, currentShorthand, m_context);
}
std::pair<RefPtr<CSSValue>, CSSCustomPropertySyntax::Type> CSSPropertyParser::consumeCustomPropertyValueWithSyntax(const CSSCustomPropertySyntax& syntax)
{
ASSERT(!syntax.isUniversal());
auto rangeCopy = m_range;
auto consumeSingleValue = [&](auto& range, auto& component) -> RefPtr<CSSValue> {
switch (component.type) {
case CSSCustomPropertySyntax::Type::Length:
return consumeLength(range, m_context.mode, ValueRange::All);
case CSSCustomPropertySyntax::Type::LengthPercentage:
return consumeLengthOrPercent(range, m_context.mode, ValueRange::All);
case CSSCustomPropertySyntax::Type::CustomIdent:
if (auto value = consumeCustomIdent(range)) {
if (component.ident.isNull() || value->stringValue() == component.ident)
return value;
}
return nullptr;
case CSSCustomPropertySyntax::Type::Percentage:
return consumePercent(range, ValueRange::All);
case CSSCustomPropertySyntax::Type::Integer:
return consumeInteger(range);
case CSSCustomPropertySyntax::Type::Number:
return consumeNumber(range, ValueRange::All);
case CSSCustomPropertySyntax::Type::Angle:
return consumeAngle(range, m_context.mode);
case CSSCustomPropertySyntax::Type::Time:
return consumeTime(range, m_context.mode, ValueRange::All);
case CSSCustomPropertySyntax::Type::Resolution:
return consumeResolution(range);
case CSSCustomPropertySyntax::Type::Color:
return consumeColor(range, m_context);
case CSSCustomPropertySyntax::Type::Image:
return consumeImage(range, m_context, { AllowedImageType::URLFunction, AllowedImageType::GeneratedImage });
case CSSCustomPropertySyntax::Type::URL:
return consumeURL(range);
case CSSCustomPropertySyntax::Type::TransformFunction:
return consumeTransformFunction(m_range, m_context);
case CSSCustomPropertySyntax::Type::TransformList:
return consumeTransform(m_range, m_context);
case CSSCustomPropertySyntax::Type::Unknown:
return nullptr;
}
ASSERT_NOT_REACHED();
return nullptr;
};
auto consumeComponent = [&](auto& range, const auto& component) -> RefPtr<CSSValue> {
switch (component.multiplier) {
case CSSCustomPropertySyntax::Multiplier::Single:
return consumeSingleValue(range, component);
case CSSCustomPropertySyntax::Multiplier::CommaList: {
return consumeCommaSeparatedListWithoutSingleValueOptimization(range, [&](auto& range) {
return consumeSingleValue(range, component);
});
}
case CSSCustomPropertySyntax::Multiplier::SpaceList: {
CSSValueListBuilder valueList;
while (auto value = consumeSingleValue(range, component))
valueList.append(value.releaseNonNull());
if (valueList.isEmpty())
return nullptr;
return CSSValueList::createSpaceSeparated(WTFMove(valueList));
}
}
ASSERT_NOT_REACHED();
return nullptr;
};
for (auto& component : syntax.definition) {
if (auto value = consumeComponent(m_range, component)) {
if (m_range.atEnd())
return { value, component.type };
}
m_range = rangeCopy;
}
return { nullptr, CSSCustomPropertySyntax::Type::Unknown };
}
ComputedStyleDependencies CSSPropertyParser::collectParsedCustomPropertyValueDependencies(const CSSCustomPropertySyntax& syntax)
{
if (syntax.isUniversal())
return { };
m_range.consumeWhitespace();
auto [value, syntaxType] = consumeCustomPropertyValueWithSyntax(syntax);
if (!value)
return { };
return value->computedStyleDependencies();
}
RefPtr<CSSCustomPropertyValue> CSSPropertyParser::parseTypedCustomPropertyValue(const AtomString& name, const CSSCustomPropertySyntax& syntax, Style::BuilderState& builderState)
{
if (syntax.isUniversal())
return CSSCustomPropertyValue::createSyntaxAll(name, CSSVariableData::create(m_range.consumeAll()));
m_range.consumeWhitespace();
if (auto value = maybeConsumeCSSWideKeyword(m_range))
return CSSCustomPropertyValue::createWithID(name, value->valueID());
auto [value, syntaxType] = consumeCustomPropertyValueWithSyntax(syntax);
if (!value)
return nullptr;
auto resolveSyntaxValue = [&, syntaxType = syntaxType](const CSSValue& value) -> std::optional<CSSCustomPropertyValue::SyntaxValue> {
switch (syntaxType) {
case CSSCustomPropertySyntax::Type::LengthPercentage:
case CSSCustomPropertySyntax::Type::Length: {
auto length = Style::BuilderConverter::convertLength(builderState, downcast<CSSPrimitiveValue>(value));
return { WTFMove(length) };
}
case CSSCustomPropertySyntax::Type::Percentage:
case CSSCustomPropertySyntax::Type::Integer:
case CSSCustomPropertySyntax::Type::Number:
case CSSCustomPropertySyntax::Type::Angle:
case CSSCustomPropertySyntax::Type::Time:
case CSSCustomPropertySyntax::Type::Resolution: {
auto canonicalUnit = canonicalUnitTypeForUnitType(downcast<CSSPrimitiveValue>(value).primitiveType());
auto doubleValue = downcast<CSSPrimitiveValue>(value).doubleValue(canonicalUnit);
return { CSSCustomPropertyValue::NumericSyntaxValue { doubleValue, canonicalUnit } };
}
case CSSCustomPropertySyntax::Type::Color: {
auto color = builderState.colorFromPrimitiveValue(downcast<CSSPrimitiveValue>(value), Style::ForVisitedLink::No);
return { color };
}
case CSSCustomPropertySyntax::Type::Image: {
auto styleImage = builderState.createStyleImage(value);
if (!styleImage)
return { };
return { WTFMove(styleImage) };
}
case CSSCustomPropertySyntax::Type::URL: {
auto url = m_context.completeURL(downcast<CSSPrimitiveValue>(value).stringValue());
return { url.resolvedURL };
}
case CSSCustomPropertySyntax::Type::CustomIdent:
return { downcast<CSSPrimitiveValue>(value).stringValue() };
case CSSCustomPropertySyntax::Type::TransformFunction:
case CSSCustomPropertySyntax::Type::TransformList:
if (auto transform = transformForValue(value, builderState.cssToLengthConversionData()))
return { CSSCustomPropertyValue::TransformSyntaxValue { transform } };
return { };
case CSSCustomPropertySyntax::Type::Unknown:
return { };
}
ASSERT_NOT_REACHED();
return { };
};
if (is<CSSValueList>(value.get()) || is<CSSTransformListValue>(value.get())) {
auto& valueList = downcast<CSSValueContainingVector>(*value);
auto syntaxValueList = CSSCustomPropertyValue::SyntaxValueList { { }, valueList.separator() };
for (auto& listValue : valueList) {
auto syntaxValue = resolveSyntaxValue(listValue);
if (!syntaxValue)
return nullptr;
syntaxValueList.values.append(WTFMove(*syntaxValue));
}
return CSSCustomPropertyValue::createForSyntaxValueList(name, WTFMove(syntaxValueList));
};
auto syntaxValue = resolveSyntaxValue(*value);
if (!syntaxValue)
return nullptr;
return CSSCustomPropertyValue::createForSyntaxValue(name, WTFMove(*syntaxValue));
}
RefPtr<CSSValue> CSSPropertyParser::parseCounterStyleDescriptor(CSSPropertyID property, CSSParserTokenRange& range, const CSSParserContext& context)
{
ASSERT(context.propertySettings.cssCounterStyleAtRulesEnabled);
return CSSPropertyParsing::parseCounterStyleDescriptor(range, property, context);
}
bool CSSPropertyParser::parseCounterStyleDescriptor(CSSPropertyID property)
{
ASSERT(m_context.propertySettings.cssCounterStyleAtRulesEnabled);
auto parsedValue = CSSPropertyParsing::parseCounterStyleDescriptor(m_range, property, m_context);
if (!parsedValue || !m_range.atEnd())
return false;
addProperty(property, CSSPropertyInvalid, WTFMove(parsedValue), false);
return true;
}
bool CSSPropertyParser::parseFontFaceDescriptor(CSSPropertyID property)
{
if (isShorthand(property))
return parseFontFaceDescriptorShorthand(property);
auto parsedValue = CSSPropertyParsing::parseFontFaceDescriptor(m_range, property, m_context);
if (!parsedValue || !m_range.atEnd())
return false;
addProperty(property, CSSPropertyInvalid, WTFMove(parsedValue), false);
return true;
}
bool CSSPropertyParser::parseFontFaceDescriptorShorthand(CSSPropertyID property)
{
ASSERT(isExposed(property, m_context.propertySettings));
switch (property) {
case CSSPropertyFontVariant:
return consumeFontVariantShorthand(false);
default:
return false;
}
}
bool CSSPropertyParser::parseKeyframeDescriptor(CSSPropertyID propertyID, bool important)
{
// https://www.w3.org/TR/css-animations-1/#keyframes
// The <declaration-list> inside of <keyframe-block> accepts any CSS property except those
// defined in this specification, but does accept the animation-timing-function property and
// interprets it specially.
switch (propertyID) {
case CSSPropertyAnimation:
case CSSPropertyAnimationDelay:
case CSSPropertyAnimationDirection:
case CSSPropertyAnimationDuration:
case CSSPropertyAnimationFillMode:
case CSSPropertyAnimationIterationCount:
case CSSPropertyAnimationName:
case CSSPropertyAnimationPlayState:
return false;
default:
return parseValueStart(propertyID, important);
}
}
bool CSSPropertyParser::parsePropertyDescriptor(CSSPropertyID property)
{
auto parsedValue = CSSPropertyParsing::parsePropertyDescriptor(m_range, property, m_context);
if (!parsedValue || !m_range.atEnd())
return false;
addProperty(property, CSSPropertyInvalid, WTFMove(parsedValue), false);
return true;
}
bool CSSPropertyParser::parseFontPaletteValuesDescriptor(CSSPropertyID property)
{
auto parsedValue = CSSPropertyParsing::parseFontPaletteValuesDescriptor(m_range, property, m_context);
if (!parsedValue || !m_range.atEnd())
return false;
addProperty(property, CSSPropertyInvalid, WTFMove(parsedValue), false);
return true;
}
bool CSSPropertyParser::consumeFont(bool important)
{
if (CSSPropertyParserHelpers::isSystemFontShorthand(m_range.peek().id())) {
auto systemFont = m_range.consumeIncludingWhitespace().id();
if (!m_range.atEnd())
return false;
// We can't store properties (weight, size, etc.) of the system font here,
// since those values can change (e.g. accessibility font sizes, or accessibility bold).
// Parsing (correctly) doesn't re-run in response to updateStyleAfterChangeInEnvironment().
// Instead, we store sentinel values, later replaced by environment-sensitive values
// inside Style::BuilderCustom and Style::BuilderConverter.
for (auto property : fontShorthand())
addProperty(property, CSSPropertyFont, CSSPrimitiveValue::create(systemFont), important, true);
return true;
}
auto range = m_range;
RefPtr<CSSValue> values[7];
auto& fontStyle = values[0];
auto& fontVariantCaps = values[1];
auto& fontWeight = values[2];
auto& fontStretch = values[3];
auto& fontSize = values[4];
auto& lineHeight = values[5];
auto& fontFamily = values[6];
// Optional font-style, font-variant, font-stretch and font-weight, in any order.
for (unsigned i = 0; i < 4 && !range.atEnd(); ++i) {
if (consumeIdent<CSSValueNormal>(range))
continue;
if (!fontStyle && (fontStyle = consumeFontStyle(range, m_context.mode)))
continue;
if (!fontVariantCaps && (fontVariantCaps = consumeIdent<CSSValueSmallCaps>(range)))
continue;
if (!fontWeight && (fontWeight = consumeFontWeight(range)))
continue;
if (!fontStretch && (fontStretch = consumeFontStretchKeywordValue(range)))
continue;
break;
}
if (range.atEnd())
return false;
fontSize = CSSPropertyParsing::consumeFontSize(range, m_context);
if (!fontSize || range.atEnd())
return false;
if (consumeSlashIncludingWhitespace(range)) {
if (!consumeIdent<CSSValueNormal>(range)) {
lineHeight = CSSPropertyParsing::consumeLineHeight(range, m_context);
if (!lineHeight)
return false;
}
if (range.atEnd())
return false;
}
fontFamily = consumeFontFamily(range);
if (!fontFamily || !range.atEnd())
return false;
m_range = range;
auto shorthand = fontShorthand();
for (unsigned i = 0; i < shorthand.length(); ++i)
addProperty(shorthand.properties()[i], CSSPropertyFont, i < std::size(values) ? WTFMove(values[i]) : nullptr, important, true);
return true;
}
bool CSSPropertyParser::consumeTextDecorationSkip(bool important)
{
if (RefPtr<CSSPrimitiveValue> skip = consumeIdent<CSSValueNone, CSSValueAuto, CSSValueInk>(m_range)) {
switch (skip->valueID()) {
case CSSValueNone:
addProperty(CSSPropertyTextDecorationSkipInk, CSSPropertyTextDecorationSkip, skip.releaseNonNull(), important);
return m_range.atEnd();
case CSSValueAuto:
addProperty(CSSPropertyTextDecorationSkipInk, CSSPropertyTextDecorationSkip, skip.releaseNonNull(), important);
return m_range.atEnd();
case CSSValueInk:
addProperty(CSSPropertyTextDecorationSkipInk, CSSPropertyTextDecorationSkip, CSSPrimitiveValue::create(CSSValueAuto), important);
return m_range.atEnd();
default:
ASSERT_NOT_REACHED();
return false;
}
}
return false;
}
bool CSSPropertyParser::consumeFontVariantShorthand(bool important)
{
if (identMatches<CSSValueNormal, CSSValueNone>(m_range.peek().id())) {
addProperty(CSSPropertyFontVariantLigatures, CSSPropertyFontVariant, consumeIdent(m_range), important);
addProperty(CSSPropertyFontVariantCaps, CSSPropertyFontVariant, nullptr, important);
addProperty(CSSPropertyFontVariantAlternates, CSSPropertyFontVariant, nullptr, important);
addProperty(CSSPropertyFontVariantNumeric, CSSPropertyFontVariant, nullptr, important);
addProperty(CSSPropertyFontVariantEastAsian, CSSPropertyFontVariant, nullptr, important);
addProperty(CSSPropertyFontVariantPosition, CSSPropertyFontVariant, nullptr, important);
return m_range.atEnd();
}
RefPtr<CSSValue> capsValue;
RefPtr<CSSValue> alternatesValue;
RefPtr<CSSValue> positionValue;
RefPtr<CSSValue> eastAsianValue;
CSSFontVariantLigaturesParser ligaturesParser;
CSSFontVariantNumericParser numericParser;
bool implicitLigatures = true;
bool implicitNumeric = true;
do {
if (!capsValue) {
capsValue = CSSPropertyParsing::consumeFontVariantCaps(m_range);
if (capsValue)
continue;
}
if (!positionValue) {
positionValue = CSSPropertyParsing::consumeFontVariantPosition(m_range);
if (positionValue)
continue;
}
if (!alternatesValue) {
alternatesValue = consumeFontVariantAlternates(m_range);
if (alternatesValue)
continue;
}
CSSFontVariantLigaturesParser::ParseResult ligaturesParseResult = ligaturesParser.consumeLigature(m_range);
CSSFontVariantNumericParser::ParseResult numericParseResult = numericParser.consumeNumeric(m_range);
if (ligaturesParseResult == CSSFontVariantLigaturesParser::ParseResult::ConsumedValue) {
implicitLigatures = false;
continue;
}
if (numericParseResult == CSSFontVariantNumericParser::ParseResult::ConsumedValue) {
implicitNumeric = false;
continue;
}
if (ligaturesParseResult == CSSFontVariantLigaturesParser::ParseResult::DisallowedValue
|| numericParseResult == CSSFontVariantNumericParser::ParseResult::DisallowedValue)
return false;
if (!eastAsianValue) {
eastAsianValue = consumeFontVariantEastAsian(m_range);
if (eastAsianValue)
continue;
}
// Saw some value that didn't match anything else.
return false;
} while (!m_range.atEnd());
addProperty(CSSPropertyFontVariantLigatures, CSSPropertyFontVariant, ligaturesParser.finalizeValue().releaseNonNull(), important, implicitLigatures);
addProperty(CSSPropertyFontVariantCaps, CSSPropertyFontVariant, WTFMove(capsValue), important);
addProperty(CSSPropertyFontVariantAlternates, CSSPropertyFontVariant, WTFMove(alternatesValue), important);
addProperty(CSSPropertyFontVariantNumeric, CSSPropertyFontVariant, numericParser.finalizeValue().releaseNonNull(), important, implicitNumeric);
addProperty(CSSPropertyFontVariantEastAsian, CSSPropertyFontVariant, WTFMove(eastAsianValue), important);
addProperty(CSSPropertyFontVariantPosition, CSSPropertyFontVariant, WTFMove(positionValue), important);
return true;
}
bool CSSPropertyParser::consumeFontSynthesis(bool important)
{
// none | [ weight || style || small-caps ]
if (m_range.peek().id() == CSSValueNone) {
addProperty(CSSPropertyFontSynthesisSmallCaps, CSSPropertyFontSynthesis, consumeIdent(m_range).releaseNonNull(), important);
addProperty(CSSPropertyFontSynthesisStyle, CSSPropertyFontSynthesis, CSSPrimitiveValue::create(CSSValueNone), important);
addProperty(CSSPropertyFontSynthesisWeight, CSSPropertyFontSynthesis, CSSPrimitiveValue::create(CSSValueNone), important);
return m_range.atEnd();
}
bool foundWeight = false;
bool foundStyle = false;
bool foundSmallCaps = false;
auto checkAndMarkExistence = [](bool* found) {
if (*found)
return false;
return *found = true;
};
while (!m_range.atEnd()) {
auto ident = consumeIdent<CSSValueWeight, CSSValueStyle, CSSValueSmallCaps>(m_range);
if (!ident)
return false;
switch (ident->valueID()) {
case CSSValueWeight:
if (!checkAndMarkExistence(&foundWeight))
return false;
break;
case CSSValueStyle:
if (!checkAndMarkExistence(&foundStyle))
return false;
break;
case CSSValueSmallCaps:
if (!checkAndMarkExistence(&foundSmallCaps))
return false;
break;
default:
ASSERT_NOT_REACHED();
return false;
}
}
addProperty(CSSPropertyFontSynthesisWeight, CSSPropertyFontSynthesis, CSSPrimitiveValue::create(foundWeight ? CSSValueAuto : CSSValueNone), important);
addProperty(CSSPropertyFontSynthesisStyle, CSSPropertyFontSynthesis, CSSPrimitiveValue::create(foundStyle ? CSSValueAuto : CSSValueNone), important);
addProperty(CSSPropertyFontSynthesisSmallCaps, CSSPropertyFontSynthesis, CSSPrimitiveValue::create(foundSmallCaps ? CSSValueAuto : CSSValueNone), important);
return true;
}
bool CSSPropertyParser::consumeBorderSpacing(bool important)
{
RefPtr<CSSValue> horizontalSpacing = consumeLength(m_range, m_context.mode, ValueRange::NonNegative, UnitlessQuirk::Allow);
if (!horizontalSpacing)
return false;
RefPtr<CSSValue> verticalSpacing = horizontalSpacing;
if (!m_range.atEnd())
verticalSpacing = consumeLength(m_range, m_context.mode, ValueRange::NonNegative, UnitlessQuirk::Allow);
if (!verticalSpacing || !m_range.atEnd())
return false;
addProperty(CSSPropertyWebkitBorderHorizontalSpacing, CSSPropertyBorderSpacing, horizontalSpacing.releaseNonNull(), important);
addProperty(CSSPropertyWebkitBorderVerticalSpacing, CSSPropertyBorderSpacing, verticalSpacing.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumeColumns(bool important)
{
RefPtr<CSSValue> columnWidth;
RefPtr<CSSValue> columnCount;
for (unsigned propertiesParsed = 0; propertiesParsed < 2 && !m_range.atEnd(); ++propertiesParsed) {
if (m_range.peek().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.
consumeIdent(m_range);
} else {
if (!columnWidth && (columnWidth = CSSPropertyParsing::consumeColumnWidth(m_range)))
continue;
if (!columnCount && (columnCount = CSSPropertyParsing::consumeColumnCount(m_range)))
continue;
// If we didn't find at least one match, this is an invalid shorthand and we have to ignore it.
return false;
}
}
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyColumnWidth, CSSPropertyColumns, WTFMove(columnWidth), important);
addProperty(CSSPropertyColumnCount, CSSPropertyColumns, WTFMove(columnCount), important);
return true;
}
struct InitialNumericValue {
double number;
CSSUnitType type { CSSUnitType::CSS_NUMBER };
};
using InitialValue = std::variant<CSSValueID, InitialNumericValue>;
static constexpr InitialValue initialValueForLonghand(CSSPropertyID longhand)
{
// Currently, this tries to cover just longhands that can be omitted from shorthands when parsing or serializing.
// Later, we likely want to cover all properties, and generate the table from CSSProperties.json.
switch (longhand) {
case CSSPropertyAccentColor:
case CSSPropertyAlignSelf:
case CSSPropertyAspectRatio:
case CSSPropertyBackgroundSize:
case CSSPropertyBlockSize:
case CSSPropertyBottom:
case CSSPropertyBreakAfter:
case CSSPropertyBreakBefore:
case CSSPropertyBreakInside:
case CSSPropertyCaretColor:
case CSSPropertyClip:
case CSSPropertyColumnCount:
case CSSPropertyColumnWidth:
case CSSPropertyCursor:
case CSSPropertyDominantBaseline:
case CSSPropertyFlexBasis:
case CSSPropertyFontKerning:
case CSSPropertyFontSynthesisSmallCaps:
case CSSPropertyFontSynthesisStyle:
case CSSPropertyFontSynthesisWeight:
case CSSPropertyGridAutoColumns:
case CSSPropertyGridAutoRows:
case CSSPropertyGridColumnEnd:
case CSSPropertyGridColumnStart:
case CSSPropertyGridRowEnd:
case CSSPropertyGridRowStart:
case CSSPropertyHeight:
case CSSPropertyImageRendering:
case CSSPropertyInlineSize:
case CSSPropertyInputSecurity:
case CSSPropertyInsetBlockEnd:
case CSSPropertyInsetBlockStart:
case CSSPropertyInsetInlineEnd:
case CSSPropertyInsetInlineStart:
case CSSPropertyJustifySelf:
case CSSPropertyLeft:
case CSSPropertyLineBreak:
case CSSPropertyMaskSize:
case CSSPropertyOffsetAnchor:
case CSSPropertyOffsetPosition:
case CSSPropertyOffsetRotate:
case CSSPropertyOverflowAnchor:
case CSSPropertyOverscrollBehaviorBlock:
case CSSPropertyOverscrollBehaviorInline:
case CSSPropertyOverscrollBehaviorX:
case CSSPropertyOverscrollBehaviorY:
case CSSPropertyPage:
case CSSPropertyPointerEvents:
case CSSPropertyQuotes:
case CSSPropertyRight:
case CSSPropertyScrollBehavior:
case CSSPropertyScrollPaddingBlockEnd:
case CSSPropertyScrollPaddingBlockStart:
case CSSPropertyScrollPaddingBottom:
case CSSPropertyScrollPaddingInlineEnd:
case CSSPropertyScrollPaddingInlineStart:
case CSSPropertyScrollPaddingLeft:
case CSSPropertyScrollPaddingRight:
case CSSPropertyScrollPaddingTop:
case CSSPropertyScrollbarColor:
case CSSPropertyScrollbarGutter:
case CSSPropertyScrollbarWidth:
case CSSPropertySize:
case CSSPropertyTableLayout:
case CSSPropertyTextAlignLast:
case CSSPropertyTextDecorationSkipInk:
case CSSPropertyTextDecorationThickness:
case CSSPropertyTextJustify:
case CSSPropertyTextUnderlineOffset:
case CSSPropertyTextUnderlinePosition:
case CSSPropertyTop:
case CSSPropertyWebkitMaskBoxImageWidth:
case CSSPropertyWebkitMaskSourceType:
case CSSPropertyWillChange:
case CSSPropertyZIndex:
case CSSPropertyZoom:
#if ENABLE(VARIATION_FONTS)
case CSSPropertyFontOpticalSizing:
#endif
return CSSValueAuto;
case CSSPropertyAlignContent:
case CSSPropertyAlignItems:
case CSSPropertyAlignTracks:
case CSSPropertyAnimationDirection:
case CSSPropertyBackgroundBlendMode:
case CSSPropertyColumnGap:
case CSSPropertyContainerType:
case CSSPropertyContent:
case CSSPropertyFontFeatureSettings:
case CSSPropertyFontPalette:
case CSSPropertyFontStretch:
case CSSPropertyFontStyle:
case CSSPropertyFontVariantAlternates:
case CSSPropertyFontVariantCaps:
case CSSPropertyFontVariantEastAsian:
case CSSPropertyFontVariantLigatures:
case CSSPropertyFontVariantNumeric:
case CSSPropertyFontVariantPosition:
case CSSPropertyFontWeight:
case CSSPropertyJustifyContent:
case CSSPropertyLetterSpacing:
case CSSPropertyLineHeight:
case CSSPropertyOverflowWrap:
case CSSPropertyRowGap:
case CSSPropertyScrollSnapStop:
case CSSPropertySpeakAs:
case CSSPropertyTextBoxTrim:
case CSSPropertyWordBreak:
case CSSPropertyWordSpacing:
#if ENABLE(VARIATION_FONTS)
case CSSPropertyFontVariationSettings:
#endif
return CSSValueNormal;
case CSSPropertyAlignmentBaseline:
case CSSPropertyVerticalAlign:
return CSSValueBaseline;
case CSSPropertyAnimationDelay:
case CSSPropertyAnimationDuration:
case CSSPropertyTransitionDelay:
case CSSPropertyTransitionDuration:
return InitialNumericValue { 0, CSSUnitType::CSS_S };
case CSSPropertyAnimationFillMode:
case CSSPropertyAnimationName:
case CSSPropertyAppearance:
case CSSPropertyBackgroundImage:
case CSSPropertyBorderBlockEndStyle:
case CSSPropertyBorderBlockStartStyle:
case CSSPropertyBorderBlockStyle:
case CSSPropertyBorderBottomStyle:
case CSSPropertyBorderImageSource:
case CSSPropertyBorderInlineEndStyle:
case CSSPropertyBorderInlineStartStyle:
case CSSPropertyBorderInlineStyle:
case CSSPropertyBorderLeftStyle:
case CSSPropertyBorderRightStyle:
case CSSPropertyBorderStyle:
case CSSPropertyBorderTopStyle:
case CSSPropertyBoxShadow:
case CSSPropertyClear:
case CSSPropertyClipPath:
case CSSPropertyColumnRuleStyle:
case CSSPropertyColumnSpan:
case CSSPropertyContain:
case CSSPropertyContainIntrinsicBlockSize:
case CSSPropertyContainIntrinsicHeight:
case CSSPropertyContainIntrinsicInlineSize:
case CSSPropertyContainIntrinsicWidth:
case CSSPropertyContainerName:
case CSSPropertyCounterIncrement:
case CSSPropertyCounterReset:
case CSSPropertyFilter:
case CSSPropertyFloat:
case CSSPropertyFontSizeAdjust:
case CSSPropertyGridTemplateAreas:
case CSSPropertyGridTemplateColumns:
case CSSPropertyGridTemplateRows:
case CSSPropertyHangingPunctuation:
case CSSPropertyListStyleImage:
case CSSPropertyMarginTrim:
case CSSPropertyMarkerEnd:
case CSSPropertyMarkerMid:
case CSSPropertyMarkerStart:
case CSSPropertyMaskImage:
case CSSPropertyMaxBlockSize:
case CSSPropertyMaxHeight:
case CSSPropertyMaxInlineSize:
case CSSPropertyMaxWidth:
case CSSPropertyMinHeight:
case CSSPropertyMinWidth:
case CSSPropertyOffsetPath:
case CSSPropertyOutlineStyle:
case CSSPropertyPerspective:
case CSSPropertyResize:
case CSSPropertyRotate:
case CSSPropertyScale:
case CSSPropertyScrollSnapAlign:
case CSSPropertyScrollSnapType:
case CSSPropertyShapeOutside:
case CSSPropertyStrokeDasharray:
case CSSPropertyTextCombineUpright:
case CSSPropertyTextDecorationLine:
case CSSPropertyTextEmphasisStyle:
case CSSPropertyTextGroupAlign:
case CSSPropertyTextShadow:
case CSSPropertyTextTransform:
case CSSPropertyTransform:
case CSSPropertyTranslate:
case CSSPropertyWebkitMaskBoxImageSource:
case CSSPropertyWidth:
return CSSValueNone;
case CSSPropertyAnimationIterationCount:
case CSSPropertyBorderImageWidth:
case CSSPropertyFillOpacity:
case CSSPropertyFlexShrink:
case CSSPropertyFloodOpacity:
case CSSPropertyStrokeOpacity:
case CSSPropertyOpacity:
return InitialNumericValue { 1, CSSUnitType::CSS_NUMBER };
case CSSPropertyAnimationPlayState:
return CSSValueRunning;
case CSSPropertyAnimationTimingFunction:
case CSSPropertyTransitionTimingFunction:
return CSSValueEase;
case CSSPropertyBackgroundAttachment:
return CSSValueScroll;
case CSSPropertyBackfaceVisibility:
case CSSPropertyContentVisibility:
case CSSPropertyOverflowX:
case CSSPropertyOverflowY:
case CSSPropertyVisibility:
return CSSValueVisible;
case CSSPropertyBackgroundClip:
case CSSPropertyMaskClip:
case CSSPropertyMaskOrigin:
case CSSPropertyWebkitMaskClip:
return CSSValueBorderBox;
case CSSPropertyBackgroundColor:
return CSSValueTransparent;
case CSSPropertyBackgroundOrigin:
return CSSValuePaddingBox;
case CSSPropertyBackgroundPositionX:
case CSSPropertyBackgroundPositionY:
case CSSPropertyWebkitMaskPositionX:
case CSSPropertyWebkitMaskPositionY:
return InitialNumericValue { 0, CSSUnitType::CSS_PERCENTAGE };
case CSSPropertyBackgroundRepeat:
case CSSPropertyMaskRepeat:
return CSSValueRepeat;
case CSSPropertyBorderBlockColor:
case CSSPropertyBorderBlockEndColor:
case CSSPropertyBorderBlockStartColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderColor:
case CSSPropertyBorderInlineColor:
case CSSPropertyBorderInlineEndColor:
case CSSPropertyBorderInlineStartColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderTopColor:
case CSSPropertyColumnRuleColor:
case CSSPropertyOutlineColor:
case CSSPropertyTextDecorationColor:
case CSSPropertyTextEmphasisColor:
case CSSPropertyWebkitTextStrokeColor:
return CSSValueCurrentcolor;
case CSSPropertyBorderBlockEndWidth:
case CSSPropertyBorderBlockStartWidth:
case CSSPropertyBorderBottomWidth:
case CSSPropertyBorderInlineEndWidth:
case CSSPropertyBorderInlineStartWidth:
case CSSPropertyBorderLeftWidth:
case CSSPropertyBorderRightWidth:
case CSSPropertyBorderTopWidth:
case CSSPropertyColumnRuleWidth:
case CSSPropertyFontSize:
case CSSPropertyOutlineWidth:
return CSSValueMedium;
case CSSPropertyBorderCollapse:
return CSSValueSeparate;
case CSSPropertyBorderImageOutset:
case CSSPropertyWebkitMaskBoxImageOutset:
return InitialNumericValue { 0, CSSUnitType::CSS_NUMBER };
case CSSPropertyBorderImageRepeat:
case CSSPropertyWebkitMaskBoxImageRepeat:
return CSSValueStretch;
case CSSPropertyBorderImageSlice:
return InitialNumericValue { 100, CSSUnitType::CSS_PERCENTAGE };
case CSSPropertyBoxSizing:
return CSSValueContentBox;
case CSSPropertyCaptionSide:
return CSSValueTop;
case CSSPropertyClipRule:
case CSSPropertyFillRule:
return CSSValueNonzero;
case CSSPropertyColor:
return CSSValueCanvastext;
case CSSPropertyColorInterpolationFilters:
return CSSValueLinearRGB;
case CSSPropertyColumnFill:
return CSSValueBalance;
case CSSPropertyDisplay:
return CSSValueInline;
case CSSPropertyEmptyCells:
return CSSValueShow;
case CSSPropertyFlexDirection:
case CSSPropertyGridAutoFlow:
return CSSValueRow;
case CSSPropertyFlexWrap:
return CSSValueNowrap;
case CSSPropertyFloodColor:
return CSSValueBlack;
case CSSPropertyImageOrientation:
return CSSValueFromImage;
case CSSPropertyJustifyItems:
return CSSValueLegacy;
case CSSPropertyLightingColor:
return CSSValueWhite;
case CSSPropertyListStylePosition:
return CSSValueOutside;
case CSSPropertyListStyleType:
return CSSValueDisc;
case CSSPropertyMaskComposite:
return CSSValueAdd;
case CSSPropertyMaskMode:
return CSSValueMatchSource;
case CSSPropertyMaskType:
return CSSValueLuminance;
case CSSPropertyObjectFit:
return CSSValueFill;
case CSSPropertyOffsetDistance:
case CSSPropertyTransformOriginZ:
case CSSPropertyWebkitTextStrokeWidth:
return InitialNumericValue { 0, CSSUnitType::CSS_PX };
case CSSPropertyOrphans:
case CSSPropertyWidows:
return InitialNumericValue { 2, CSSUnitType::CSS_NUMBER };
case CSSPropertyPerspectiveOriginX:
case CSSPropertyPerspectiveOriginY:
case CSSPropertyTransformOriginX:
case CSSPropertyTransformOriginY:
return InitialNumericValue { 50, CSSUnitType::CSS_PERCENTAGE };
case CSSPropertyPosition:
return CSSValueStatic;
case CSSPropertyPrintColorAdjust:
return CSSValueEconomy;
case CSSPropertyStrokeColor:
return CSSValueTransparent;
case CSSPropertyStrokeLinecap:
return CSSValueButt;
case CSSPropertyStrokeLinejoin:
return CSSValueMiter;
case CSSPropertyStrokeMiterlimit:
return InitialNumericValue { 4, CSSUnitType::CSS_NUMBER };
case CSSPropertyStrokeWidth:
return InitialNumericValue { 1, CSSUnitType::CSS_PX };
case CSSPropertyTabSize:
return InitialNumericValue { 8, CSSUnitType::CSS_NUMBER };
case CSSPropertyTextAlign:
return CSSValueStart;
case CSSPropertyTextDecorationStyle:
return CSSValueSolid;
case CSSPropertyTextBoxEdge:
return CSSValueLeading;
case CSSPropertyTextOrientation:
return CSSValueMixed;
case CSSPropertyTextOverflow:
return CSSValueClip;
case CSSPropertyTextWrap:
return CSSValueWrap;
case CSSPropertyTransformBox:
return CSSValueViewBox;
case CSSPropertyTransformStyle:
return CSSValueFlat;
case CSSPropertyTransitionProperty:
return CSSValueAll;
case CSSPropertyWritingMode:
return CSSValueHorizontalTb;
case CSSPropertyTextSpacingTrim:
return CSSValueSpaceAll;
case CSSPropertyTextAutospace:
return CSSValueNoAutospace;
case CSSPropertyWhiteSpaceCollapse:
return CSSValueCollapse;
default:
RELEASE_ASSERT_NOT_REACHED();
}
}
static bool isValueIDPair(const CSSValue& value, CSSValueID valueID)
{
return value.isPair() && isValueID(value.first(), valueID) && isValueID(value.second(), valueID);
}
static bool isNumber(const CSSPrimitiveValue& value, double number, CSSUnitType type)
{
return value.primitiveType() == type && value.doubleValue() == number;
}
static bool isNumber(const CSSPrimitiveValue* value, double number, CSSUnitType type)
{
return value && isNumber(*value, number, type);
}
static bool isNumber(const CSSValue& value, double number, CSSUnitType type)
{
return isNumber(dynamicDowncast<CSSPrimitiveValue>(value), number, type);
}
static bool isNumber(const RectBase& quad, double number, CSSUnitType type)
{
return isNumber(quad.top(), number, type)
&& isNumber(quad.right(), number, type)
&& isNumber(quad.bottom(), number, type)
&& isNumber(quad.left(), number, type);
}
static bool isValueID(const RectBase& quad, CSSValueID valueID)
{
return isValueID(quad.top(), valueID)
&& isValueID(quad.right(), valueID)
&& isValueID(quad.bottom(), valueID)
&& isValueID(quad.left(), valueID);
}
static bool isNumericQuad(const CSSValue& value, double number, CSSUnitType type)
{
return value.isQuad() && isNumber(value.quad(), number, type);
}
bool isInitialValueForLonghand(CSSPropertyID longhand, const CSSValue& value)
{
if (value.isImplicitInitialValue())
return true;
switch (longhand) {
case CSSPropertyBackgroundSize:
case CSSPropertyMaskSize:
if (isValueIDPair(value, CSSValueAuto))
return true;
break;
case CSSPropertyBorderImageOutset:
case CSSPropertyWebkitMaskBoxImageOutset:
if (isNumericQuad(value, 0, CSSUnitType::CSS_NUMBER))
return true;
break;
case CSSPropertyBorderImageRepeat:
case CSSPropertyWebkitMaskBoxImageRepeat:
if (isValueIDPair(value, CSSValueStretch))
return true;
break;
case CSSPropertyBorderImageSlice:
if (auto sliceValue = dynamicDowncast<CSSBorderImageSliceValue>(value)) {
if (!sliceValue->fill() && isNumber(sliceValue->slices(), 100, CSSUnitType::CSS_PERCENTAGE))
return true;
}
break;
case CSSPropertyBorderImageWidth:
if (auto widthValue = dynamicDowncast<CSSBorderImageWidthValue>(value)) {
if (!widthValue->overridesBorderWidths() && isNumber(widthValue->widths(), 1, CSSUnitType::CSS_NUMBER))
return true;
}
break;
case CSSPropertyOffsetRotate:
if (auto rotateValue = dynamicDowncast<CSSOffsetRotateValue>(value)) {
if (rotateValue->isInitialValue())
return true;
}
break;
case CSSPropertyWebkitMaskBoxImageSlice:
if (auto sliceValue = dynamicDowncast<CSSBorderImageSliceValue>(value)) {
if (sliceValue->fill() && isNumber(sliceValue->slices(), 0, CSSUnitType::CSS_NUMBER))
return true;
}
return false;
case CSSPropertyWebkitMaskBoxImageWidth:
if (auto widthValue = dynamicDowncast<CSSBorderImageWidthValue>(value)) {
if (!widthValue->overridesBorderWidths() && isValueID(widthValue->widths(), CSSValueAuto))
return true;
}
break;
default:
break;
}
return WTF::switchOn(initialValueForLonghand(longhand), [&](CSSValueID initialValue) {
return isValueID(value, initialValue);
}, [&](InitialNumericValue initialValue) {
return isNumber(value, initialValue.number, initialValue.type);
});
}
ASCIILiteral initialValueTextForLonghand(CSSPropertyID longhand)
{
if (longhand == CSSPropertyWebkitMaskBoxImageSlice)
return "0 fill"_s;
return WTF::switchOn(initialValueForLonghand(longhand), [](CSSValueID value) {
return nameLiteral(value);
}, [](InitialNumericValue initialValue) {
switch (initialValue.type) {
case CSSUnitType::CSS_NUMBER:
if (initialValue.number == 0.0)
return "0"_s;
if (initialValue.number == 1.0)
return "1"_s;
if (initialValue.number == 2.0)
return "2"_s;
if (initialValue.number == 4.0)
return "4"_s;
if (initialValue.number == 8.0)
return "8"_s;
break;
case CSSUnitType::CSS_PERCENTAGE:
if (initialValue.number == 0.0)
return "0%"_s;
if (initialValue.number == 50.0)
return "50%"_s;
if (initialValue.number == 100.0)
return "100%"_s;
break;
case CSSUnitType::CSS_PX:
if (initialValue.number == 0.0)
return "0px"_s;
if (initialValue.number == 1.0)
return "1px"_s;
break;
case CSSUnitType::CSS_S:
if (initialValue.number == 0.0)
return "0s"_s;
break;
default:
break;
}
ASSERT_NOT_REACHED();
return ""_s;
});
}
CSSValueID initialValueIDForLonghand(CSSPropertyID longhand)
{
if (longhand == CSSPropertyWebkitMaskBoxImageSlice)
return CSSValueInvalid;
return WTF::switchOn(initialValueForLonghand(longhand), [](CSSValueID value) {
return value;
}, [](InitialNumericValue) {
return CSSValueInvalid;
});
}
bool CSSPropertyParser::consumeShorthandGreedily(const StylePropertyShorthand& shorthand, bool important)
{
ASSERT(shorthand.length() <= 6); // Existing shorthands have at most 6 longhands.
RefPtr<CSSValue> longhands[6];
const CSSPropertyID* shorthandProperties = shorthand.properties();
do {
bool foundLonghand = false;
for (size_t i = 0; !foundLonghand && i < shorthand.length(); ++i) {
if (longhands[i])
continue;
longhands[i] = parseSingleValue(shorthandProperties[i], shorthand.id());
if (longhands[i])
foundLonghand = true;
}
if (!foundLonghand)
return false;
} while (!m_range.atEnd());
for (size_t i = 0; i < shorthand.length(); ++i)
addProperty(shorthandProperties[i], shorthand.id(), WTFMove(longhands[i]), important);
return true;
}
bool CSSPropertyParser::consumeFlex(bool important)
{
static const double unsetValue = -1;
double flexGrow = unsetValue;
double flexShrink = unsetValue;
RefPtr<CSSPrimitiveValue> flexBasis;
if (m_range.peek().id() == CSSValueNone) {
flexGrow = 0;
flexShrink = 0;
flexBasis = CSSPrimitiveValue::create(CSSValueAuto);
m_range.consumeIncludingWhitespace();
} else {
unsigned index = 0;
while (!m_range.atEnd() && index++ < 3) {
if (auto number = consumeNumberRaw(m_range)) {
if (number->value < 0)
return false;
if (flexGrow == unsetValue)
flexGrow = number->value;
else if (flexShrink == unsetValue)
flexShrink = number->value;
else if (!number->value) // flex only allows a basis of 0 (sans units) if flex-grow and flex-shrink values have already been set.
flexBasis = CSSPrimitiveValue::create(0, CSSUnitType::CSS_PX);
else
return false;
} else if (!flexBasis) {
if (isFlexBasisIdent(m_range.peek().id()))
flexBasis = consumeIdent(m_range);
if (!flexBasis)
flexBasis = consumeLengthOrPercent(m_range, m_context.mode, ValueRange::NonNegative);
if (index == 2 && !m_range.atEnd())
return false;
}
}
if (index == 0)
return false;
if (flexGrow == unsetValue)
flexGrow = 1;
if (flexShrink == unsetValue)
flexShrink = 1;
// FIXME: Using % here is a hack to work around intrinsic sizing implementation being
// a mess (e.g., turned off for nested column flexboxes, failing to relayout properly even
// if turned back on for nested columns, etc.). We have layout test coverage of both
// scenarios.
if (!flexBasis)
flexBasis = CSSPrimitiveValue::create(0, CSSUnitType::CSS_PERCENTAGE);
}
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyFlexGrow, CSSPropertyFlex, CSSPrimitiveValue::create(clampTo<float>(flexGrow)), important);
addProperty(CSSPropertyFlexShrink, CSSPropertyFlex, CSSPrimitiveValue::create(clampTo<float>(flexShrink)), important);
addProperty(CSSPropertyFlexBasis, CSSPropertyFlex, flexBasis.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumeBorderShorthand(CSSPropertyID widthProperty, CSSPropertyID styleProperty, CSSPropertyID colorProperty, bool important)
{
RefPtr<CSSValue> width;
RefPtr<CSSValue> style;
RefPtr<CSSValue> color;
while (!width || !style || !color) {
if (!width) {
width = CSSPropertyParsing::consumeLineWidth(m_range, m_context);
if (width)
continue;
}
if (!style) {
style = parseSingleValue(CSSPropertyBorderLeftStyle, CSSPropertyBorder);
if (style)
continue;
}
if (!color) {
color = consumeColor(m_range, m_context);
if (color)
continue;
}
break;
}
if (!width && !style && !color)
return false;
if (!m_range.atEnd())
return false;
addExpandedProperty(widthProperty, WTFMove(width), important);
addExpandedProperty(styleProperty, WTFMove(style), important);
addExpandedProperty(colorProperty, WTFMove(color), important);
return true;
}
bool CSSPropertyParser::consume2ValueShorthand(const StylePropertyShorthand& shorthand, bool important)
{
ASSERT(shorthand.length() == 2);
const CSSPropertyID* longhands = shorthand.properties();
RefPtr<CSSValue> start = parseSingleValue(longhands[0], shorthand.id());
if (!start)
return false;
RefPtr<CSSValue> end = parseSingleValue(longhands[1], shorthand.id());
bool endImplicit = !end;
if (endImplicit)
end = start;
addProperty(longhands[0], shorthand.id(), start.releaseNonNull(), important);
addProperty(longhands[1], shorthand.id(), end.releaseNonNull(), important, endImplicit);
return m_range.atEnd();
}
bool CSSPropertyParser::consume4ValueShorthand(const StylePropertyShorthand& shorthand, bool important)
{
ASSERT(shorthand.length() == 4);
const CSSPropertyID* longhands = shorthand.properties();
RefPtr<CSSValue> top = parseSingleValue(longhands[0], shorthand.id());
if (!top)
return false;
RefPtr<CSSValue> right = parseSingleValue(longhands[1], shorthand.id());
RefPtr<CSSValue> bottom;
RefPtr<CSSValue> left;
if (right) {
bottom = parseSingleValue(longhands[2], shorthand.id());
if (bottom)
left = parseSingleValue(longhands[3], shorthand.id());
}
bool rightImplicit = !right;
bool bottomImplicit = !bottom;
bool leftImplicit = !left;
if (!right)
right = top;
if (!bottom)
bottom = top;
if (!left)
left = right;
addProperty(longhands[0], shorthand.id(), top.releaseNonNull(), important);
addProperty(longhands[1], shorthand.id(), right.releaseNonNull(), important, rightImplicit);
addProperty(longhands[2], shorthand.id(), bottom.releaseNonNull(), important, bottomImplicit);
addProperty(longhands[3], shorthand.id(), left.releaseNonNull(), important, leftImplicit);
return m_range.atEnd();
}
bool CSSPropertyParser::consumeBorderImage(CSSPropertyID property, bool important)
{
RefPtr<CSSValue> source;
RefPtr<CSSValue> slice;
RefPtr<CSSValue> width;
RefPtr<CSSValue> outset;
RefPtr<CSSValue> repeat;
if (!consumeBorderImageComponents(property, m_range, m_context, source, slice, width, outset, repeat))
return false;
if (property == CSSPropertyWebkitMaskBoxImage) {
addProperty(CSSPropertyWebkitMaskBoxImageSource, property, WTFMove(source), important);
addProperty(CSSPropertyWebkitMaskBoxImageSlice, property, WTFMove(slice), important);
addProperty(CSSPropertyWebkitMaskBoxImageWidth, property, WTFMove(width), important);
addProperty(CSSPropertyWebkitMaskBoxImageOutset, property, WTFMove(outset), important);
addProperty(CSSPropertyWebkitMaskBoxImageRepeat, property, WTFMove(repeat), important);
} else {
addProperty(CSSPropertyBorderImageSource, property, WTFMove(source), important);
addProperty(CSSPropertyBorderImageSlice, property, WTFMove(slice), important);
addProperty(CSSPropertyBorderImageWidth, property, WTFMove(width), important);
addProperty(CSSPropertyBorderImageOutset, property, WTFMove(outset), important);
addProperty(CSSPropertyBorderImageRepeat, property, WTFMove(repeat), important);
}
return true;
}
static inline CSSValueID mapFromPageBreakBetween(CSSValueID value)
{
if (value == CSSValueAlways)
return CSSValuePage;
if (value == CSSValueAuto || value == CSSValueAvoid || value == CSSValueLeft || value == CSSValueRight)
return value;
return CSSValueInvalid;
}
static inline CSSValueID mapFromColumnBreakBetween(CSSValueID value)
{
if (value == CSSValueAlways)
return CSSValueColumn;
if (value == CSSValueAuto)
return value;
if (value == CSSValueAvoid)
return CSSValueAvoidColumn;
return CSSValueInvalid;
}
static inline CSSValueID mapFromColumnRegionOrPageBreakInside(CSSValueID value)
{
if (value == CSSValueAuto || value == CSSValueAvoid)
return value;
return CSSValueInvalid;
}
static inline CSSPropertyID mapFromLegacyBreakProperty(CSSPropertyID property)
{
if (property == CSSPropertyPageBreakAfter || property == CSSPropertyWebkitColumnBreakAfter)
return CSSPropertyBreakAfter;
if (property == CSSPropertyPageBreakBefore || property == CSSPropertyWebkitColumnBreakBefore)
return CSSPropertyBreakBefore;
ASSERT(property == CSSPropertyPageBreakInside || property == CSSPropertyWebkitColumnBreakInside);
return CSSPropertyBreakInside;
}
bool CSSPropertyParser::consumeLegacyBreakProperty(CSSPropertyID property, bool important)
{
// The fragmentation spec says that page-break-(after|before|inside) are to be treated as
// shorthands for their break-(after|before|inside) counterparts. We'll do the same for the
// non-standard properties -webkit-column-break-(after|before|inside).
RefPtr<CSSPrimitiveValue> keyword = consumeIdent(m_range);
if (!keyword)
return false;
if (!m_range.atEnd())
return false;
CSSValueID value = keyword->valueID();
switch (property) {
case CSSPropertyPageBreakAfter:
case CSSPropertyPageBreakBefore:
value = mapFromPageBreakBetween(value);
break;
case CSSPropertyWebkitColumnBreakAfter:
case CSSPropertyWebkitColumnBreakBefore:
value = mapFromColumnBreakBetween(value);
break;
case CSSPropertyPageBreakInside:
case CSSPropertyWebkitColumnBreakInside:
value = mapFromColumnRegionOrPageBreakInside(value);
break;
default:
ASSERT_NOT_REACHED();
}
if (value == CSSValueInvalid)
return false;
CSSPropertyID genericBreakProperty = mapFromLegacyBreakProperty(property);
addProperty(genericBreakProperty, property, CSSPrimitiveValue::create(value), important);
return true;
}
bool CSSPropertyParser::consumeLegacyTextOrientation(bool important)
{
// -webkit-text-orientation is a legacy shorthand for text-orientation.
// The only difference is that it accepts 'sideways-right', which is mapped into 'sideways'.
RefPtr<CSSPrimitiveValue> keyword;
auto valueID = m_range.peek().id();
if (valueID == CSSValueSidewaysRight) {
keyword = CSSPrimitiveValue::create(CSSValueSideways);
consumeIdentRaw(m_range);
} else if (CSSParserFastPaths::isKeywordValidForStyleProperty(CSSPropertyTextOrientation, valueID, m_context))
keyword = consumeIdent(m_range);
if (!keyword || !m_range.atEnd())
return false;
addProperty(CSSPropertyTextOrientation, CSSPropertyWebkitTextOrientation, keyword.releaseNonNull(), important);
return true;
}
static bool isValidAnimationPropertyList(CSSPropertyID property, const CSSValueListBuilder& valueList)
{
// If there is more than one <single-transition> in the shorthand, and any of the transitions
// has none as the <single-transition-property>, then the declaration is invalid.
if (property != CSSPropertyTransitionProperty || valueList.size() < 2)
return true;
for (auto& value : valueList) {
if (isValueID(value, CSSValueNone))
return false;
}
return true;
}
static RefPtr<CSSValue> consumeAnimationValueForShorthand(CSSPropertyID property, CSSParserTokenRange& range, const CSSParserContext& context)
{
switch (property) {
case CSSPropertyAnimationDelay:
case CSSPropertyTransitionDelay:
return consumeTime(range, context.mode, ValueRange::All, UnitlessQuirk::Forbid);
case CSSPropertyAnimationDirection:
return CSSPropertyParsing::consumeSingleAnimationDirection(range);
case CSSPropertyAnimationDuration:
case CSSPropertyTransitionDuration:
return consumeTime(range, context.mode, ValueRange::NonNegative, UnitlessQuirk::Forbid);
case CSSPropertyAnimationFillMode:
return CSSPropertyParsing::consumeSingleAnimationFillMode(range);
case CSSPropertyAnimationIterationCount:
return CSSPropertyParsing::consumeSingleAnimationIterationCount(range);
case CSSPropertyAnimationName:
return CSSPropertyParsing::consumeSingleAnimationName(range, context);
case CSSPropertyAnimationPlayState:
return CSSPropertyParsing::consumeSingleAnimationPlayState(range);
case CSSPropertyAnimationComposition:
return CSSPropertyParsing::consumeSingleAnimationComposition(range);
case CSSPropertyTransitionProperty:
return consumeSingleTransitionPropertyOrNone(range);
case CSSPropertyAnimationTimingFunction:
case CSSPropertyTransitionTimingFunction:
return consumeTimingFunction(range, context);
default:
ASSERT_NOT_REACHED();
return nullptr;
}
}
bool CSSPropertyParser::consumeAnimationShorthand(const StylePropertyShorthand& shorthand, bool important)
{
const unsigned longhandCount = shorthand.length();
CSSValueListBuilder longhands[8];
ASSERT(longhandCount <= 8);
do {
bool parsedLonghand[8] = { false };
do {
bool foundProperty = false;
for (size_t i = 0; i < longhandCount; ++i) {
if (parsedLonghand[i])
continue;
if (auto value = consumeAnimationValueForShorthand(shorthand.properties()[i], m_range, m_context)) {
parsedLonghand[i] = true;
foundProperty = true;
longhands[i].append(*value);
break;
}
}
if (!foundProperty)
return false;
} while (!m_range.atEnd() && m_range.peek().type() != CommaToken);
for (size_t i = 0; i < longhandCount; ++i) {
if (!parsedLonghand[i])
longhands[i].append(Ref { CSSPrimitiveValue::implicitInitialValue() });
parsedLonghand[i] = false;
}
} while (consumeCommaIncludingWhitespace(m_range));
for (size_t i = 0; i < longhandCount; ++i) {
if (!isValidAnimationPropertyList(shorthand.properties()[i], longhands[i]))
return false;
}
for (size_t i = 0; i < longhandCount; ++i)
addProperty(shorthand.properties()[i], shorthand.id(), CSSValueList::createCommaSeparated(WTFMove(longhands[i])), important);
return m_range.atEnd();
}
static bool consumeBackgroundPosition(CSSParserTokenRange& range, const CSSParserContext& context, CSSPropertyID property, RefPtr<CSSValue>& resultX, RefPtr<CSSValue>& resultY)
{
CSSValueListBuilder x;
CSSValueListBuilder y;
do {
auto position = consumePositionCoordinates(range, context.mode, UnitlessQuirk::Allow, property == CSSPropertyMaskPosition ? PositionSyntax::Position : PositionSyntax::BackgroundPosition, NegativePercentagePolicy::Allow);
if (!position)
return false;
x.append(WTFMove(position->x));
y.append(WTFMove(position->y));
} while (consumeCommaIncludingWhitespace(range));
if (x.size() == 1) {
resultX = WTFMove(x[0]);
resultY = WTFMove(y[0]);
} else {
resultX = CSSValueList::createCommaSeparated(WTFMove(x));
resultY = CSSValueList::createCommaSeparated(WTFMove(y));
}
return true;
}
static RefPtr<CSSValue> consumeBackgroundComponent(CSSPropertyID property, CSSParserTokenRange& range, const CSSParserContext& context)
{
switch (property) {
// background-*
case CSSPropertyBackgroundClip:
return CSSPropertyParsing::consumeSingleBackgroundClip(range);
case CSSPropertyBackgroundBlendMode:
return CSSPropertyParsing::consumeSingleBackgroundBlendMode(range);
case CSSPropertyBackgroundAttachment:
return CSSPropertyParsing::consumeSingleBackgroundAttachment(range);
case CSSPropertyBackgroundOrigin:
return CSSPropertyParsing::consumeSingleBackgroundOrigin(range);
case CSSPropertyBackgroundImage:
return CSSPropertyParsing::consumeSingleBackgroundImage(range, context);
case CSSPropertyBackgroundRepeat:
return CSSPropertyParsing::consumeSingleBackgroundRepeat(range, context);
case CSSPropertyBackgroundPositionX:
return CSSPropertyParsing::consumeSingleBackgroundPositionX(range, context);
case CSSPropertyBackgroundPositionY:
return CSSPropertyParsing::consumeSingleBackgroundPositionY(range, context);
case CSSPropertyBackgroundSize:
return consumeSingleBackgroundSize(range, context);
case CSSPropertyBackgroundColor:
return consumeColor(range, context);
// mask-*
case CSSPropertyMaskComposite:
return CSSPropertyParsing::consumeSingleMaskComposite(range);
case CSSPropertyMaskOrigin:
return CSSPropertyParsing::consumeSingleMaskOrigin(range);
case CSSPropertyMaskClip:
return CSSPropertyParsing::consumeSingleMaskClip(range);
case CSSPropertyMaskImage:
return CSSPropertyParsing::consumeSingleMaskImage(range, context);
case CSSPropertyMaskMode:
return CSSPropertyParsing::consumeSingleMaskMode(range);
case CSSPropertyMaskRepeat:
return CSSPropertyParsing::consumeSingleMaskRepeat(range, context);
case CSSPropertyMaskSize:
return consumeSingleMaskSize(range, context);
// -webkit-background-*
case CSSPropertyWebkitBackgroundSize:
return consumeSingleWebkitBackgroundSize(range, context);
case CSSPropertyWebkitBackgroundClip:
return CSSPropertyParsing::consumeSingleWebkitBackgroundClip(range);
case CSSPropertyWebkitBackgroundOrigin:
return CSSPropertyParsing::consumeSingleWebkitBackgroundOrigin(range);
// -webkit-mask-*
case CSSPropertyWebkitMaskClip:
return CSSPropertyParsing::consumeSingleWebkitMaskClip(range);
case CSSPropertyWebkitMaskComposite:
return CSSPropertyParsing::consumeSingleWebkitMaskComposite(range);
case CSSPropertyWebkitMaskSourceType:
return CSSPropertyParsing::consumeSingleWebkitMaskSourceType(range);
case CSSPropertyWebkitMaskPositionX:
return CSSPropertyParsing::consumeSingleWebkitMaskPositionX(range, context);
case CSSPropertyWebkitMaskPositionY:
return CSSPropertyParsing::consumeSingleWebkitMaskPositionY(range, context);
default:
return nullptr;
};
}
// Note: consumeBackgroundShorthand assumes y properties (for example background-position-y) follow
// the x properties in the shorthand array.
bool CSSPropertyParser::consumeBackgroundShorthand(const StylePropertyShorthand& shorthand, bool important)
{
const unsigned longhandCount = shorthand.length();
CSSValueListBuilder longhands[10];
ASSERT(longhandCount <= 10);
do {
bool parsedLonghand[10] = { false };
bool lastParsedWasPosition = false;
RefPtr<CSSValue> originValue;
do {
bool foundProperty = false;
for (size_t i = 0; i < longhandCount; ++i) {
if (parsedLonghand[i])
continue;
RefPtr<CSSValue> value;
RefPtr<CSSValue> valueY;
CSSPropertyID property = shorthand.properties()[i];
if (property == CSSPropertyBackgroundPositionX || property == CSSPropertyWebkitMaskPositionX) {
CSSParserTokenRange rangeCopy = m_range;
auto position = consumePositionCoordinates(rangeCopy, m_context.mode, UnitlessQuirk::Forbid, PositionSyntax::BackgroundPosition);
if (!position)
continue;
value = WTFMove(position->x);
valueY = WTFMove(position->y);
m_range = rangeCopy;
} else if (property == CSSPropertyBackgroundSize) {
if (!consumeSlashIncludingWhitespace(m_range))
continue;
if (!lastParsedWasPosition)
return false;
value = consumeSingleBackgroundSize(m_range, m_context);
if (!value)
return false;
} else if (property == CSSPropertyMaskSize) {
if (!consumeSlashIncludingWhitespace(m_range))
continue;
if (!lastParsedWasPosition)
return false;
value = consumeSingleMaskSize(m_range, m_context);
if (!value)
return false;
} else if (property == CSSPropertyBackgroundPositionY || property == CSSPropertyWebkitMaskPositionY) {
continue;
} else {
value = consumeBackgroundComponent(property, m_range, m_context);
}
if (value) {
if (property == CSSPropertyBackgroundOrigin || property == CSSPropertyMaskOrigin)
originValue = value;
parsedLonghand[i] = true;
foundProperty = true;
longhands[i].append(value.releaseNonNull());
lastParsedWasPosition = valueY;
if (valueY) {
parsedLonghand[i + 1] = true;
longhands[i + 1].append(valueY.releaseNonNull());
}
}
}
if (!foundProperty)
return false;
} while (!m_range.atEnd() && m_range.peek().type() != CommaToken);
for (size_t i = 0; i < longhandCount; ++i) {
CSSPropertyID property = shorthand.properties()[i];
if (property == CSSPropertyBackgroundColor && !m_range.atEnd()) {
if (parsedLonghand[i])
return false; // Colors are only allowed in the last layer.
continue;
}
if ((property == CSSPropertyBackgroundClip || property == CSSPropertyMaskClip || property == CSSPropertyWebkitMaskClip) && !parsedLonghand[i] && originValue) {
longhands[i].append(originValue.releaseNonNull());
continue;
}
if (!parsedLonghand[i])
longhands[i].append(Ref { CSSPrimitiveValue::implicitInitialValue() });
}
} while (consumeCommaIncludingWhitespace(m_range));
if (!m_range.atEnd())
return false;
for (size_t i = 0; i < longhandCount; ++i) {
CSSPropertyID property = shorthand.properties()[i];
if (property == CSSPropertyBackgroundSize && !longhands[i].isEmpty() && m_context.useLegacyBackgroundSizeShorthandBehavior)
continue;
if (longhands[i].size() == 1)
addProperty(property, shorthand.id(), WTFMove(longhands[i][0]), important);
else
addProperty(property, shorthand.id(), CSSValueList::createCommaSeparated(WTFMove(longhands[i])), important);
}
return true;
}
bool CSSPropertyParser::consumeOverflowShorthand(bool important)
{
CSSValueID xValueID = m_range.consumeIncludingWhitespace().id();
if (!CSSParserFastPaths::isKeywordValidForStyleProperty(CSSPropertyOverflowY, xValueID, m_context))
return false;
CSSValueID yValueID;
if (m_range.atEnd()) {
yValueID = xValueID;
// 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 (xValueID == CSSValueWebkitPagedX || xValueID == CSSValueWebkitPagedY)
xValueID = CSSValueAuto;
} else
yValueID = m_range.consumeIncludingWhitespace().id();
if (!CSSParserFastPaths::isKeywordValidForStyleProperty(CSSPropertyOverflowY, yValueID, m_context))
return false;
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyOverflowX, CSSPropertyOverflow, CSSPrimitiveValue::create(xValueID), important);
addProperty(CSSPropertyOverflowY, CSSPropertyOverflow, CSSPrimitiveValue::create(yValueID), important);
return true;
}
static bool isCustomIdentValue(const CSSValue& value)
{
return is<CSSPrimitiveValue>(value) && downcast<CSSPrimitiveValue>(value).isCustomIdent();
}
bool CSSPropertyParser::consumeGridItemPositionShorthand(CSSPropertyID shorthandId, bool important)
{
const StylePropertyShorthand& shorthand = shorthandForProperty(shorthandId);
ASSERT(shorthand.length() == 2);
RefPtr<CSSValue> startValue = consumeGridLine(m_range);
if (!startValue)
return false;
RefPtr<CSSValue> endValue;
if (consumeSlashIncludingWhitespace(m_range)) {
endValue = consumeGridLine(m_range);
if (!endValue)
return false;
} else {
endValue = isCustomIdentValue(*startValue) ? startValue : CSSPrimitiveValue::create(CSSValueAuto);
}
if (!m_range.atEnd())
return false;
addProperty(shorthand.properties()[0], shorthandId, startValue.releaseNonNull(), important);
addProperty(shorthand.properties()[1], shorthandId, endValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumeGridAreaShorthand(bool important)
{
RefPtr<CSSValue> rowStartValue = consumeGridLine(m_range);
if (!rowStartValue)
return false;
RefPtr<CSSValue> columnStartValue;
RefPtr<CSSValue> rowEndValue;
RefPtr<CSSValue> columnEndValue;
if (consumeSlashIncludingWhitespace(m_range)) {
columnStartValue = consumeGridLine(m_range);
if (!columnStartValue)
return false;
if (consumeSlashIncludingWhitespace(m_range)) {
rowEndValue = consumeGridLine(m_range);
if (!rowEndValue)
return false;
if (consumeSlashIncludingWhitespace(m_range)) {
columnEndValue = consumeGridLine(m_range);
if (!columnEndValue)
return false;
}
}
}
if (!m_range.atEnd())
return false;
if (!columnStartValue)
columnStartValue = isCustomIdentValue(*rowStartValue) ? rowStartValue : CSSPrimitiveValue::create(CSSValueAuto);
if (!rowEndValue)
rowEndValue = isCustomIdentValue(*rowStartValue) ? rowStartValue : CSSPrimitiveValue::create(CSSValueAuto);
if (!columnEndValue)
columnEndValue = isCustomIdentValue(*columnStartValue) ? columnStartValue : CSSPrimitiveValue::create(CSSValueAuto);
addProperty(CSSPropertyGridRowStart, CSSPropertyGridArea, rowStartValue.releaseNonNull(), important);
addProperty(CSSPropertyGridColumnStart, CSSPropertyGridArea, columnStartValue.releaseNonNull(), important);
addProperty(CSSPropertyGridRowEnd, CSSPropertyGridArea, rowEndValue.releaseNonNull(), important);
addProperty(CSSPropertyGridColumnEnd, CSSPropertyGridArea, columnEndValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumeGridTemplateRowsAndAreasAndColumns(CSSPropertyID shorthandId, bool important)
{
NamedGridAreaMap gridAreaMap;
size_t rowCount = 0;
size_t columnCount = 0;
CSSValueListBuilder templateRows;
// Persists between loop iterations so we can use the same value for
// consecutive <line-names> values
RefPtr<CSSGridLineNamesValue> lineNames;
do {
// Handle leading <custom-ident>*.
auto previousLineNames = std::exchange(lineNames, consumeGridLineNames(m_range));
if (lineNames) {
if (!previousLineNames)
templateRows.append(lineNames.releaseNonNull());
else {
Vector<String> combinedLineNames;
combinedLineNames.append(previousLineNames->names());
combinedLineNames.append(lineNames->names());
templateRows.last() = CSSGridLineNamesValue::create(combinedLineNames);
}
}
// Handle a template-area's row.
if (m_range.peek().type() != StringToken || !parseGridTemplateAreasRow(m_range.consumeIncludingWhitespace().value(), gridAreaMap, rowCount, columnCount))
return false;
++rowCount;
// Handle template-rows's track-size.
if (auto value = consumeGridTrackSize(m_range, m_context.mode))
templateRows.append(value.releaseNonNull());
else
templateRows.append(CSSPrimitiveValue::create(CSSValueAuto));
// This will handle the trailing/leading <custom-ident>* in the grammar.
lineNames = consumeGridLineNames(m_range);
if (lineNames)
templateRows.append(*lineNames);
} while (!m_range.atEnd() && !(m_range.peek().type() == DelimiterToken && m_range.peek().delimiter() == '/'));
RefPtr<CSSValue> columnsValue;
if (!m_range.atEnd()) {
if (!consumeSlashIncludingWhitespace(m_range))
return false;
columnsValue = consumeGridTrackList(m_range, m_context, GridTemplateNoRepeat);
if (!columnsValue || !m_range.atEnd())
return false;
} else {
columnsValue = CSSPrimitiveValue::create(CSSValueNone);
}
addProperty(CSSPropertyGridTemplateRows, shorthandId, CSSValueList::createSpaceSeparated(WTFMove(templateRows)), important);
addProperty(CSSPropertyGridTemplateColumns, shorthandId, columnsValue.releaseNonNull(), important);
addProperty(CSSPropertyGridTemplateAreas, shorthandId, CSSGridTemplateAreasValue::create(gridAreaMap, rowCount, columnCount), important);
return true;
}
bool CSSPropertyParser::consumeGridTemplateShorthand(CSSPropertyID shorthandId, bool important)
{
CSSParserTokenRange rangeCopy = m_range;
RefPtr<CSSValue> rowsValue = consumeIdent<CSSValueNone>(m_range);
// 1- 'none' case.
if (rowsValue && m_range.atEnd()) {
addProperty(CSSPropertyGridTemplateRows, shorthandId, CSSPrimitiveValue::create(CSSValueNone), important);
addProperty(CSSPropertyGridTemplateColumns, shorthandId, CSSPrimitiveValue::create(CSSValueNone), important);
addProperty(CSSPropertyGridTemplateAreas, shorthandId, CSSPrimitiveValue::create(CSSValueNone), important);
return true;
}
// 2- <grid-template-rows> / <grid-template-columns>
if (!rowsValue)
rowsValue = consumeGridTrackList(m_range, m_context, GridTemplate);
if (rowsValue) {
if (!consumeSlashIncludingWhitespace(m_range))
return false;
RefPtr<CSSValue> columnsValue = consumeGridTemplatesRowsOrColumns(m_range, m_context);
if (!columnsValue || !m_range.atEnd())
return false;
addProperty(CSSPropertyGridTemplateRows, shorthandId, rowsValue.releaseNonNull(), important);
addProperty(CSSPropertyGridTemplateColumns, shorthandId, columnsValue.releaseNonNull(), important);
addProperty(CSSPropertyGridTemplateAreas, shorthandId, CSSPrimitiveValue::create(CSSValueNone), important);
return true;
}
// 3- [ <line-names>? <string> <track-size>? <line-names>? ]+ [ / <track-list> ]?
m_range = rangeCopy;
return consumeGridTemplateRowsAndAreasAndColumns(shorthandId, important);
}
static RefPtr<CSSValue> consumeImplicitGridAutoFlow(CSSParserTokenRange& range, CSSValueID flowDirection)
{
// [ auto-flow && dense? ]
bool autoFlow = consumeIdentRaw<CSSValueAutoFlow>(range).has_value();
bool dense = consumeIdentRaw<CSSValueDense>(range).has_value();
if (!autoFlow && (!dense || !consumeIdentRaw<CSSValueAutoFlow>(range)))
return nullptr;
if (!dense)
return CSSValueList::createSpaceSeparated(CSSPrimitiveValue::create(flowDirection));
if (flowDirection == CSSValueRow)
return CSSValueList::createSpaceSeparated(CSSPrimitiveValue::create(CSSValueDense));
return CSSValueList::createSpaceSeparated(CSSPrimitiveValue::create(flowDirection),
CSSPrimitiveValue::create(CSSValueDense));
}
bool CSSPropertyParser::consumeGridShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyGrid).length() == 6);
CSSParserTokenRange rangeCopy = m_range;
// 1- <grid-template>
if (consumeGridTemplateShorthand(CSSPropertyGrid, 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, CSSPropertyGrid, CSSPrimitiveValue::create(CSSValueRow), important);
addProperty(CSSPropertyGridAutoColumns, CSSPropertyGrid, CSSPrimitiveValue::create(CSSValueAuto), important);
addProperty(CSSPropertyGridAutoRows, CSSPropertyGrid, CSSPrimitiveValue::create(CSSValueAuto), important);
return true;
}
m_range = rangeCopy;
RefPtr<CSSValue> autoColumnsValue;
RefPtr<CSSValue> autoRowsValue;
RefPtr<CSSValue> templateRows;
RefPtr<CSSValue> templateColumns;
RefPtr<CSSValue> gridAutoFlow;
if (m_range.peek().id() == CSSValueAutoFlow || m_range.peek().id() == CSSValueDense) {
// 2- [ auto-flow && dense? ] <grid-auto-rows>? / <grid-template-columns>
gridAutoFlow = consumeImplicitGridAutoFlow(m_range, CSSValueRow);
if (!gridAutoFlow || m_range.atEnd())
return false;
if (consumeSlashIncludingWhitespace(m_range))
autoRowsValue = CSSPrimitiveValue::create(CSSValueAuto);
else {
autoRowsValue = consumeGridTrackList(m_range, m_context, GridAuto);
if (!autoRowsValue)
return false;
if (!consumeSlashIncludingWhitespace(m_range))
return false;
}
if (m_range.atEnd())
return false;
templateColumns = consumeGridTemplatesRowsOrColumns(m_range, m_context);
if (!templateColumns)
return false;
templateRows = CSSPrimitiveValue::create(CSSValueNone);
autoColumnsValue = CSSPrimitiveValue::create(CSSValueAuto);
} else {
// 3- <grid-template-rows> / [ auto-flow && dense? ] <grid-auto-columns>?
templateRows = consumeGridTemplatesRowsOrColumns(m_range, m_context.mode);
if (!templateRows)
return false;
if (!consumeSlashIncludingWhitespace(m_range) || m_range.atEnd())
return false;
gridAutoFlow = consumeImplicitGridAutoFlow(m_range, CSSValueColumn);
if (!gridAutoFlow)
return false;
if (m_range.atEnd())
autoColumnsValue = CSSPrimitiveValue::create(CSSValueAuto);
else {
autoColumnsValue = consumeGridTrackList(m_range, m_context, GridAuto);
if (!autoColumnsValue)
return false;
}
templateColumns = CSSPrimitiveValue::create(CSSValueNone);
autoRowsValue = CSSPrimitiveValue::create(CSSValueAuto);
}
if (!m_range.atEnd())
return false;
// 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, CSSPropertyGrid, templateColumns.releaseNonNull(), important);
addProperty(CSSPropertyGridTemplateRows, CSSPropertyGrid, templateRows.releaseNonNull(), important);
addProperty(CSSPropertyGridTemplateAreas, CSSPropertyGrid, CSSPrimitiveValue::create(CSSValueNone), important);
addProperty(CSSPropertyGridAutoFlow, CSSPropertyGrid, gridAutoFlow.releaseNonNull(), important);
addProperty(CSSPropertyGridAutoColumns, CSSPropertyGrid, autoColumnsValue.releaseNonNull(), important);
addProperty(CSSPropertyGridAutoRows, CSSPropertyGrid, autoRowsValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumePlaceContentShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyPlaceContent).length() == 2);
if (m_range.atEnd())
return false;
CSSParserTokenRange rangeCopy = m_range;
bool isBaseline = isBaselineKeyword(m_range.peek().id());
RefPtr<CSSValue> alignContentValue = consumeContentDistributionOverflowPosition(m_range, isContentPositionKeyword);
if (!alignContentValue)
return false;
// justify-content property does not allow the <baseline-position> values.
if (m_range.atEnd() && isBaseline)
return false;
if (isBaselineKeyword(m_range.peek().id()))
return false;
if (m_range.atEnd())
m_range = rangeCopy;
RefPtr<CSSValue> justifyContentValue = consumeContentDistributionOverflowPosition(m_range, isContentPositionOrLeftOrRightKeyword);
if (!justifyContentValue)
return false;
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyAlignContent, CSSPropertyPlaceContent, alignContentValue.releaseNonNull(), important);
addProperty(CSSPropertyJustifyContent, CSSPropertyPlaceContent, justifyContentValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumePlaceItemsShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyPlaceItems).length() == 2);
CSSParserTokenRange rangeCopy = m_range;
RefPtr<CSSValue> alignItemsValue = consumeAlignItems(m_range);
if (!alignItemsValue)
return false;
if (m_range.atEnd())
m_range = rangeCopy;
RefPtr<CSSValue> justifyItemsValue = consumeJustifyItems(m_range);
if (!justifyItemsValue)
return false;
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyAlignItems, CSSPropertyPlaceItems, alignItemsValue.releaseNonNull(), important);
addProperty(CSSPropertyJustifyItems, CSSPropertyPlaceItems, justifyItemsValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumePlaceSelfShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyPlaceSelf).length() == 2);
CSSParserTokenRange rangeCopy = m_range;
RefPtr<CSSValue> alignSelfValue = consumeSelfPositionOverflowPosition(m_range, isSelfPositionKeyword);
if (!alignSelfValue)
return false;
if (m_range.atEnd())
m_range = rangeCopy;
RefPtr<CSSValue> justifySelfValue = consumeSelfPositionOverflowPosition(m_range, isSelfPositionOrLeftOrRightKeyword);
if (!justifySelfValue)
return false;
if (!m_range.atEnd())
return false;
addProperty(CSSPropertyAlignSelf, CSSPropertyPlaceSelf, alignSelfValue.releaseNonNull(), important);
addProperty(CSSPropertyJustifySelf, CSSPropertyPlaceSelf, justifySelfValue.releaseNonNull(), important);
return true;
}
bool CSSPropertyParser::consumeOverscrollBehaviorShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyOverscrollBehavior).length() == 2);
if (m_range.atEnd())
return false;
RefPtr<CSSValue> overscrollBehaviorX = CSSPropertyParsing::consumeOverscrollBehaviorX(m_range);
if (!overscrollBehaviorX)
return false;
RefPtr<CSSValue> overscrollBehaviorY;
m_range.consumeWhitespace();
if (m_range.atEnd())
overscrollBehaviorY = overscrollBehaviorX;
else {
overscrollBehaviorY = CSSPropertyParsing::consumeOverscrollBehaviorY(m_range);
m_range.consumeWhitespace();
if (!m_range.atEnd())
return false;
}
addProperty(CSSPropertyOverscrollBehaviorX, CSSPropertyOverscrollBehavior, WTFMove(overscrollBehaviorX), important);
addProperty(CSSPropertyOverscrollBehaviorY, CSSPropertyOverscrollBehavior, WTFMove(overscrollBehaviorY), important);
return true;
}
bool CSSPropertyParser::consumeContainerShorthand(bool important)
{
auto name = consumeContainerName(m_range);
if (!name)
return false;
bool sawSlash = false;
auto consumeSlashType = [&]() -> RefPtr<CSSValue> {
if (m_range.atEnd())
return nullptr;
if (!consumeSlashIncludingWhitespace(m_range))
return nullptr;
sawSlash = true;
return parseSingleValue(CSSPropertyContainerType);
};
auto type = consumeSlashType();
if (!m_range.atEnd() || (sawSlash && !type))
return false;
addProperty(CSSPropertyContainerName, CSSPropertyContainer, name.releaseNonNull(), important);
addProperty(CSSPropertyContainerType, CSSPropertyContainer, WTFMove(type), important);
return true;
}
bool CSSPropertyParser::consumeContainIntrinsicSizeShorthand(bool important)
{
ASSERT(shorthandForProperty(CSSPropertyContainIntrinsicSize).length() == 2);
ASSERT(isExposed(CSSPropertyContainIntrinsicSize, &m_context.propertySettings));
if (m_range.atEnd())
return false;
RefPtr<CSSValue> containIntrinsicWidth = consumeContainIntrinsicSize(m_range);
if (!containIntrinsicWidth)
return false;
RefPtr<CSSValue> containIntrinsicHeight;
m_range.consumeWhitespace();
if (m_range.atEnd())
containIntrinsicHeight = containIntrinsicWidth;
else {
containIntrinsicHeight = consumeContainIntrinsicSize(m_range);
m_range.consumeWhitespace();
if (!m_range.atEnd() || !containIntrinsicHeight)
return false;
}
addProperty(CSSPropertyContainIntrinsicWidth, CSSPropertyContainIntrinsicSize, WTFMove(containIntrinsicWidth), important);
addProperty(CSSPropertyContainIntrinsicHeight, CSSPropertyContainIntrinsicSize, WTFMove(containIntrinsicHeight), important);
return true;
}
bool CSSPropertyParser::consumeTransformOrigin(bool important)
{
if (auto resultXY = consumeOneOrTwoValuedPositionCoordinates(m_range, m_context.mode, UnitlessQuirk::Forbid)) {
m_range.consumeWhitespace();
bool atEnd = m_range.atEnd();
auto resultZ = consumeLength(m_range, m_context.mode, ValueRange::All);
if ((!resultZ && !atEnd) || !m_range.atEnd())
return false;
addProperty(CSSPropertyTransformOriginX, CSSPropertyTransformOrigin, WTFMove(resultXY->x), important);
addProperty(CSSPropertyTransformOriginY, CSSPropertyTransformOrigin, WTFMove(resultXY->y), important);
addProperty(CSSPropertyTransformOriginZ, CSSPropertyTransformOrigin, resultZ, important);
return true;
}
return false;
}
bool CSSPropertyParser::consumePerspectiveOrigin(bool important)
{
if (auto result = consumePositionCoordinates(m_range, m_context.mode, UnitlessQuirk::Forbid, PositionSyntax::Position)) {
addProperty(CSSPropertyPerspectiveOriginX, CSSPropertyPerspectiveOrigin, WTFMove(result->x), important);
addProperty(CSSPropertyPerspectiveOriginY, CSSPropertyPerspectiveOrigin, WTFMove(result->y), important);
return true;
}
return false;
}
bool CSSPropertyParser::consumePrefixedPerspective(bool important)
{
if (auto value = CSSPropertyParsing::consumePerspective(m_range, m_context)) {
addProperty(CSSPropertyPerspective, CSSPropertyWebkitPerspective, value.releaseNonNull(), important);
return m_range.atEnd();
}
if (auto perspective = consumeNumberRaw(m_range)) {
if (perspective->value < 0)
return false;
auto value = CSSPrimitiveValue::create(perspective->value, CSSUnitType::CSS_PX);
addProperty(CSSPropertyPerspective, CSSPropertyWebkitPerspective, WTFMove(value), important);
return m_range.atEnd();
}
return false;
}
bool CSSPropertyParser::consumeOffset(bool important)
{
// The offset shorthand is defined as:
// [ <'offset-position'>?
// [ <'offset-path'>
// [ <'offset-distance'> || <'offset-rotate'> ]?
// ]?
// ]!
// [ / <'offset-anchor'> ]?
// Parse out offset-position.
auto offsetPosition = parseSingleValue(CSSPropertyOffsetPosition, CSSPropertyOffset);
// Parse out offset-path.
auto offsetPath = parseSingleValue(CSSPropertyOffsetPath, CSSPropertyOffset);
// Either one of offset-position and offset-path must be present.
if (!offsetPosition && !offsetPath)
return false;
// Only parse offset-distance and offset-rotate if offset-path is specified.
RefPtr<CSSValue> offsetDistance;
RefPtr<CSSValue> offsetRotate;
if (offsetPath) {
// Try to parse offset-distance first. If successful, parse the following offset-rotate.
// Otherwise, parse in the reverse order.
if ((offsetDistance = parseSingleValue(CSSPropertyOffsetDistance, CSSPropertyOffset)))
offsetRotate = parseSingleValue(CSSPropertyOffsetRotate, CSSPropertyOffset);
else {
offsetRotate = parseSingleValue(CSSPropertyOffsetRotate, CSSPropertyOffset);
offsetDistance = parseSingleValue(CSSPropertyOffsetDistance, CSSPropertyOffset);
}
}
// Parse out offset-anchor. Only parse if the prefix slash is present.
RefPtr<CSSValue> offsetAnchor;
if (consumeSlashIncludingWhitespace(m_range)) {
// offset-anchor must follow the slash.
if (!(offsetAnchor = parseSingleValue(CSSPropertyOffsetAnchor, CSSPropertyOffset)))
return false;
}
addProperty(CSSPropertyOffsetPath, CSSPropertyOffset, WTFMove(offsetPath), important);
addProperty(CSSPropertyOffsetDistance, CSSPropertyOffset, WTFMove(offsetDistance), important);
addProperty(CSSPropertyOffsetPosition, CSSPropertyOffset, WTFMove(offsetPosition), important);
addProperty(CSSPropertyOffsetAnchor, CSSPropertyOffset, WTFMove(offsetAnchor), important);
addProperty(CSSPropertyOffsetRotate, CSSPropertyOffset, WTFMove(offsetRotate), important);
return m_range.atEnd();
}
bool CSSPropertyParser::consumeListStyleShorthand(bool important)
{
RefPtr<CSSValue> parsedPosition;
RefPtr<CSSValue> parsedImage;
RefPtr<CSSValue> parsedType;
unsigned noneCount = 0;
while (!m_range.atEnd()) {
if (m_range.peek().id() == CSSValueNone) {
++noneCount;
consumeIdent(m_range);
continue;
}
if (!parsedPosition) {
if (auto position = parseSingleValue(CSSPropertyListStylePosition, CSSPropertyListStyle)) {
parsedPosition = position;
continue;
}
}
if (!parsedImage) {
if (auto image = parseSingleValue(CSSPropertyListStyleImage, CSSPropertyListStyle)) {
parsedImage = image;
continue;
}
}
if (!parsedType) {
if (auto type = parseSingleValue(CSSPropertyListStyleType, CSSPropertyListStyle)) {
parsedType = type;
continue;
}
}
return false;
}
if (noneCount > (static_cast<unsigned>(!parsedImage + !parsedType)))
return false;
if (noneCount == 2) {
// Using implicit none for list-style-image is how we serialize "none" instead of "none none".
parsedImage = nullptr;
parsedType = CSSPrimitiveValue::create(CSSValueNone);
} else if (noneCount == 1) {
// Use implicit none for list-style-image, but non-implicit for type.
if (!parsedType)
parsedType = CSSPrimitiveValue::create(CSSValueNone);
}
addProperty(CSSPropertyListStylePosition, CSSPropertyListStyle, WTFMove(parsedPosition), important);
addProperty(CSSPropertyListStyleImage, CSSPropertyListStyle, WTFMove(parsedImage), important);
addProperty(CSSPropertyListStyleType, CSSPropertyListStyle, WTFMove(parsedType), important);
return m_range.atEnd();
}
bool CSSPropertyParser::consumeWhiteSpaceShorthand(bool important)
{
RefPtr<CSSValue> whiteSpaceCollapse;
RefPtr<CSSValue> textWrap;
// Single value syntax.
auto singleValueKeyword = consumeIdentRaw<
CSSValueNormal,
CSSValuePre,
CSSValuePreLine,
CSSValuePreWrap
>(m_range);
if (!m_context.propertySettings.cssWhiteSpaceLonghandsEnabled && !singleValueKeyword)
singleValueKeyword = consumeIdentRaw<CSSValueNowrap, CSSValueBreakSpaces>(m_range);
if (singleValueKeyword) {
switch (*singleValueKeyword) {
case CSSValueNormal:
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValueCollapse);
textWrap = CSSPrimitiveValue::create(CSSValueWrap);
break;
case CSSValuePre:
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValuePreserve);
textWrap = CSSPrimitiveValue::create(CSSValueNowrap);
break;
case CSSValuePreLine:
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValuePreserveBreaks);
textWrap = CSSPrimitiveValue::create(CSSValueWrap);
break;
case CSSValuePreWrap:
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValuePreserve);
textWrap = CSSPrimitiveValue::create(CSSValueWrap);
break;
case CSSValueNowrap:
ASSERT(!m_context.propertySettings.cssWhiteSpaceLonghandsEnabled);
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValueCollapse);
textWrap = CSSPrimitiveValue::create(CSSValueNowrap);
break;
case CSSValueBreakSpaces:
ASSERT(!m_context.propertySettings.cssWhiteSpaceLonghandsEnabled);
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValueBreakSpaces);
textWrap = CSSPrimitiveValue::create(CSSValueWrap);
break;
default:
ASSERT_NOT_REACHED();
return false;
}
} else if (m_context.propertySettings.cssWhiteSpaceLonghandsEnabled) {
// Multi-value syntax.
for (unsigned propertiesParsed = 0; propertiesParsed < 2 && !m_range.atEnd(); ++propertiesParsed) {
if (!whiteSpaceCollapse && (whiteSpaceCollapse = CSSPropertyParsing::consumeWhiteSpaceCollapse(m_range)))
continue;
if (!textWrap && (textWrap = CSSPropertyParsing::consumeTextWrap(m_range, m_context)))
continue;
// If we didn't find at least one match, this is an invalid shorthand and we have to ignore it.
return false;
}
}
if (!m_range.atEnd())
return false;
// Fill in default values if one was missing from the multi-value syntax.
if (!whiteSpaceCollapse)
whiteSpaceCollapse = CSSPrimitiveValue::create(CSSValueCollapse);
if (!textWrap)
textWrap = CSSPrimitiveValue::create(CSSValueWrap);
addProperty(CSSPropertyWhiteSpaceCollapse, CSSPropertyWhiteSpace, WTFMove(whiteSpaceCollapse), important);
addProperty(CSSPropertyTextWrap, CSSPropertyWhiteSpace, WTFMove(textWrap), important);
return true;
}
bool CSSPropertyParser::parseShorthand(CSSPropertyID property, bool important)
{
switch (property) {
case CSSPropertyOverflow:
return consumeOverflowShorthand(important);
case CSSPropertyOverscrollBehavior:
return consumeOverscrollBehaviorShorthand(important);
case CSSPropertyFont:
return consumeFont(important);
case CSSPropertyFontVariant:
return consumeFontVariantShorthand(important);
case CSSPropertyFontSynthesis:
return consumeFontSynthesis(important);
case CSSPropertyBorderSpacing:
return consumeBorderSpacing(important);
case CSSPropertyColumns:
return consumeColumns(important);
case CSSPropertyAnimation:
return consumeAnimationShorthand(animationShorthandForParsing(), important);
case CSSPropertyTransition:
return consumeAnimationShorthand(transitionShorthandForParsing(), important);
case CSSPropertyTextDecoration: {
auto line = consumeTextDecorationLine(m_range);
if (!line || !m_range.atEnd())
return false;
addProperty(CSSPropertyTextDecorationLine, property, line.releaseNonNull(), important);
return true;
}
case CSSPropertyWebkitTextDecoration:
// FIXME-NEWPARSER: We need to unprefix -line/-style/-color ASAP and get rid
// of -webkit-text-decoration completely.
return consumeShorthandGreedily(webkitTextDecorationShorthand(), important);
case CSSPropertyInset:
return consume4ValueShorthand(insetShorthand(), important);
case CSSPropertyInsetBlock:
return consume2ValueShorthand(insetBlockShorthand(), important);
case CSSPropertyInsetInline:
return consume2ValueShorthand(insetInlineShorthand(), important);
case CSSPropertyMargin:
return consume4ValueShorthand(marginShorthand(), important);
case CSSPropertyMarginBlock:
return consume2ValueShorthand(marginBlockShorthand(), important);
case CSSPropertyMarginInline:
return consume2ValueShorthand(marginInlineShorthand(), important);
case CSSPropertyPadding:
return consume4ValueShorthand(paddingShorthand(), important);
case CSSPropertyPaddingBlock:
return consume2ValueShorthand(paddingBlockShorthand(), important);
case CSSPropertyPaddingInline:
return consume2ValueShorthand(paddingInlineShorthand(), important);
case CSSPropertyScrollMargin:
return consume4ValueShorthand(scrollMarginShorthand(), important);
case CSSPropertyScrollMarginBlock:
return consume2ValueShorthand(scrollMarginBlockShorthand(), important);
case CSSPropertyScrollMarginInline:
return consume2ValueShorthand(scrollMarginInlineShorthand(), important);
case CSSPropertyScrollPadding:
return consume4ValueShorthand(scrollPaddingShorthand(), important);
case CSSPropertyScrollPaddingBlock:
return consume2ValueShorthand(scrollPaddingBlockShorthand(), important);
case CSSPropertyScrollPaddingInline:
return consume2ValueShorthand(scrollPaddingInlineShorthand(), important);
case CSSPropertyTextEmphasis:
return consumeShorthandGreedily(textEmphasisShorthand(), important);
case CSSPropertyOutline:
return consumeShorthandGreedily(outlineShorthand(), important);
case CSSPropertyOffset:
return consumeOffset(important);
case CSSPropertyBorderInline:
return consumeBorderShorthand(CSSPropertyBorderInlineWidth, CSSPropertyBorderInlineStyle, CSSPropertyBorderInlineColor, important);
case CSSPropertyBorderInlineColor:
return consume2ValueShorthand(borderInlineColorShorthand(), important);
case CSSPropertyBorderInlineStyle:
return consume2ValueShorthand(borderInlineStyleShorthand(), important);
case CSSPropertyBorderInlineWidth:
return consume2ValueShorthand(borderInlineWidthShorthand(), important);
case CSSPropertyBorderInlineStart:
return consumeShorthandGreedily(borderInlineStartShorthand(), important);
case CSSPropertyBorderInlineEnd:
return consumeShorthandGreedily(borderInlineEndShorthand(), important);
case CSSPropertyBorderBlock:
return consumeBorderShorthand(CSSPropertyBorderBlockWidth, CSSPropertyBorderBlockStyle, CSSPropertyBorderBlockColor, important);
case CSSPropertyBorderBlockColor:
return consume2ValueShorthand(borderBlockColorShorthand(), important);
case CSSPropertyBorderBlockStyle:
return consume2ValueShorthand(borderBlockStyleShorthand(), important);
case CSSPropertyBorderBlockWidth:
return consume2ValueShorthand(borderBlockWidthShorthand(), important);
case CSSPropertyBorderBlockStart:
return consumeShorthandGreedily(borderBlockStartShorthand(), important);
case CSSPropertyBorderBlockEnd:
return consumeShorthandGreedily(borderBlockEndShorthand(), important);
case CSSPropertyWebkitTextStroke:
return consumeShorthandGreedily(webkitTextStrokeShorthand(), important);
case CSSPropertyMarker: {
RefPtr<CSSValue> marker = parseSingleValue(CSSPropertyMarkerStart);
if (!marker || !m_range.atEnd())
return false;
auto markerRef = marker.releaseNonNull();
addProperty(CSSPropertyMarkerStart, CSSPropertyMarker, markerRef.copyRef(), important);
addProperty(CSSPropertyMarkerMid, CSSPropertyMarker, markerRef.copyRef(), important);
addProperty(CSSPropertyMarkerEnd, CSSPropertyMarker, markerRef.copyRef(), important);
return true;
}
case CSSPropertyFlex:
return consumeFlex(important);
case CSSPropertyFlexFlow:
return consumeShorthandGreedily(flexFlowShorthand(), important);
case CSSPropertyColumnRule:
return consumeShorthandGreedily(columnRuleShorthand(), important);
case CSSPropertyListStyle:
return consumeListStyleShorthand(important);
case CSSPropertyBorderRadius:
case CSSPropertyWebkitBorderRadius: {
std::array<RefPtr<CSSValue>, 4> horizontalRadii;
std::array<RefPtr<CSSValue>, 4> verticalRadii;
if (!consumeRadii(horizontalRadii, verticalRadii, m_range, m_context.mode, property == CSSPropertyWebkitBorderRadius))
return false;
addProperty(CSSPropertyBorderTopLeftRadius, CSSPropertyBorderRadius, CSSValuePair::create(horizontalRadii[0].releaseNonNull(), verticalRadii[0].releaseNonNull()), important);
addProperty(CSSPropertyBorderTopRightRadius, CSSPropertyBorderRadius, CSSValuePair::create(horizontalRadii[1].releaseNonNull(), verticalRadii[1].releaseNonNull()), important);
addProperty(CSSPropertyBorderBottomRightRadius, CSSPropertyBorderRadius, CSSValuePair::create(horizontalRadii[2].releaseNonNull(), verticalRadii[2].releaseNonNull()), important);
addProperty(CSSPropertyBorderBottomLeftRadius, CSSPropertyBorderRadius, CSSValuePair::create(horizontalRadii[3].releaseNonNull(), verticalRadii[3].releaseNonNull()), important);
return true;
}
case CSSPropertyBorderColor:
return consume4ValueShorthand(borderColorShorthand(), important);
case CSSPropertyBorderStyle:
return consume4ValueShorthand(borderStyleShorthand(), important);
case CSSPropertyBorderWidth:
return consume4ValueShorthand(borderWidthShorthand(), important);
case CSSPropertyBorderTop:
return consumeShorthandGreedily(borderTopShorthand(), important);
case CSSPropertyBorderRight:
return consumeShorthandGreedily(borderRightShorthand(), important);
case CSSPropertyBorderBottom:
return consumeShorthandGreedily(borderBottomShorthand(), important);
case CSSPropertyBorderLeft:
return consumeShorthandGreedily(borderLeftShorthand(), important);
case CSSPropertyBorder: {
if (!consumeBorderShorthand(CSSPropertyBorderWidth, CSSPropertyBorderStyle, CSSPropertyBorderColor, important))
return false;
for (auto longhand : borderImageShorthand())
addProperty(longhand, CSSPropertyBorder, nullptr, important);
return true;
}
case CSSPropertyBorderImage:
case CSSPropertyWebkitBorderImage:
case CSSPropertyWebkitMaskBoxImage:
return consumeBorderImage(property, important);
case CSSPropertyPageBreakAfter:
case CSSPropertyPageBreakBefore:
case CSSPropertyPageBreakInside:
case CSSPropertyWebkitColumnBreakAfter:
case CSSPropertyWebkitColumnBreakBefore:
case CSSPropertyWebkitColumnBreakInside:
return consumeLegacyBreakProperty(property, important);
case CSSPropertyWebkitTextOrientation:
return consumeLegacyTextOrientation(important);
case CSSPropertyMaskPosition:
case CSSPropertyWebkitMaskPosition:
case CSSPropertyBackgroundPosition: {
RefPtr<CSSValue> resultX;
RefPtr<CSSValue> resultY;
if (!consumeBackgroundPosition(m_range, m_context, property, resultX, resultY) || !m_range.atEnd())
return false;
addProperty(property == CSSPropertyBackgroundPosition ? CSSPropertyBackgroundPositionX : CSSPropertyWebkitMaskPositionX, property, resultX.releaseNonNull(), important);
addProperty(property == CSSPropertyBackgroundPosition ? CSSPropertyBackgroundPositionY : CSSPropertyWebkitMaskPositionY, property, resultY.releaseNonNull(), important);
return true;
}
case CSSPropertyBackground:
return consumeBackgroundShorthand(backgroundShorthand(), important);
case CSSPropertyWebkitBackgroundSize: {
auto backgroundSize = consumeCommaSeparatedListWithSingleValueOptimization(m_range, [] (auto& range, auto& context) {
return consumeSingleWebkitBackgroundSize(range, context);
}, m_context);
if (!backgroundSize || !m_range.atEnd())
return false;
addProperty(CSSPropertyBackgroundSize, CSSPropertyWebkitBackgroundSize, backgroundSize.releaseNonNull(), important);
return true;
}
case CSSPropertyMask:
case CSSPropertyWebkitMask:
return consumeBackgroundShorthand(shorthandForProperty(property), important);
case CSSPropertyTransformOrigin:
return consumeTransformOrigin(important);
case CSSPropertyPerspectiveOrigin:
return consumePerspectiveOrigin(important);
case CSSPropertyWebkitPerspective:
return consumePrefixedPerspective(important);
case CSSPropertyGap: {
auto rowGap = CSSPropertyParsing::consumeRowGap(m_range, m_context);
auto columnGap = CSSPropertyParsing::consumeColumnGap(m_range, m_context);
if (!rowGap || !m_range.atEnd())
return false;
if (!columnGap)
columnGap = rowGap;
addProperty(CSSPropertyRowGap, CSSPropertyGap, rowGap.releaseNonNull(), important);
addProperty(CSSPropertyColumnGap, CSSPropertyGap, columnGap.releaseNonNull(), important);
return true;
}
case CSSPropertyGridColumn:
case CSSPropertyGridRow:
return consumeGridItemPositionShorthand(property, important);
case CSSPropertyGridArea:
return consumeGridAreaShorthand(important);
case CSSPropertyGridTemplate:
return consumeGridTemplateShorthand(CSSPropertyGridTemplate, important);
case CSSPropertyGrid:
return consumeGridShorthand(important);
case CSSPropertyPlaceContent:
return consumePlaceContentShorthand(important);
case CSSPropertyPlaceItems:
return consumePlaceItemsShorthand(important);
case CSSPropertyPlaceSelf:
return consumePlaceSelfShorthand(important);
case CSSPropertyTextDecorationSkip:
return consumeTextDecorationSkip(important);
case CSSPropertyContainer:
return consumeContainerShorthand(important);
case CSSPropertyContainIntrinsicSize:
return consumeContainIntrinsicSizeShorthand(important);
case CSSPropertyWhiteSpace:
return consumeWhiteSpaceShorthand(important);
default:
return false;
}
}
} // namespace WebCore
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