| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Copyright (C) 2016-2021 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 "CSSPropertyParserHelpers.h" |
| |
| #include "CSSCalcSymbolTable.h" |
| #include "CSSCalcValue.h" |
| #include "CSSCanvasValue.h" |
| #include "CSSCrossfadeValue.h" |
| #include "CSSFilterImageValue.h" |
| #include "CSSGradientValue.h" |
| #include "CSSImageSetValue.h" |
| #include "CSSImageValue.h" |
| #include "CSSNamedImageValue.h" |
| #include "CSSPaintImageValue.h" |
| #include "CSSParserIdioms.h" |
| #include "CSSValuePool.h" |
| #include "CalculationCategory.h" |
| #include "ColorConversion.h" |
| #include "ColorLuminance.h" |
| #include "Logging.h" |
| #include "Pair.h" |
| #include "RenderStyleConstants.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "StyleColor.h" |
| #include "WebKitFontFamilyNames.h" |
| #include <wtf/SortedArrayMap.h> |
| #include <wtf/text/StringConcatenateNumbers.h> |
| #include <wtf/text/TextStream.h> |
| |
| namespace WebCore { |
| |
| namespace CSSPropertyParserHelpers { |
| |
| bool consumeCommaIncludingWhitespace(CSSParserTokenRange& range) |
| { |
| CSSParserToken value = range.peek(); |
| if (value.type() != CommaToken) |
| return false; |
| range.consumeIncludingWhitespace(); |
| return true; |
| } |
| |
| bool consumeSlashIncludingWhitespace(CSSParserTokenRange& range) |
| { |
| CSSParserToken value = range.peek(); |
| if (value.type() != DelimiterToken || value.delimiter() != '/') |
| return false; |
| range.consumeIncludingWhitespace(); |
| return true; |
| } |
| |
| CSSParserTokenRange consumeFunction(CSSParserTokenRange& range) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| CSSParserTokenRange contents = range.consumeBlock(); |
| range.consumeWhitespace(); |
| contents.consumeWhitespace(); |
| return contents; |
| } |
| |
| inline bool shouldAcceptUnitlessValue(double value, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero) |
| { |
| // FIXME: Presentational HTML attributes shouldn't use the CSS parser for lengths. |
| |
| if (value == 0 && unitlessZero == UnitlessZeroQuirk::Allow) |
| return true; |
| |
| if (isUnitlessValueParsingEnabledForMode(parserMode)) |
| return true; |
| |
| return parserMode == HTMLQuirksMode && unitless == UnitlessQuirk::Allow; |
| } |
| |
| static bool canConsumeCalcValue(CalculationCategory category, CSSParserMode parserMode) |
| { |
| if (category == CalculationCategory::Length || category == CalculationCategory::Percent || category == CalculationCategory::PercentLength) |
| return true; |
| |
| if (parserMode != SVGAttributeMode) |
| return false; |
| |
| if (category == CalculationCategory::Number || category == CalculationCategory::PercentNumber) |
| return true; |
| |
| return false; |
| } |
| |
| // FIXME: consider pulling in the parsing logic from CSSCalcExpressionNodeParser. |
| class CalcParser { |
| public: |
| explicit CalcParser(CSSParserTokenRange& range, CalculationCategory destinationCategory, ValueRange valueRange = ValueRange::All, const CSSCalcSymbolTable& symbolTable = { }, CSSValuePool& pool = CSSValuePool::singleton()) |
| : m_sourceRange(range) |
| , m_range(range) |
| , m_pool(pool) |
| { |
| const CSSParserToken& token = range.peek(); |
| auto functionId = token.functionId(); |
| if (CSSCalcValue::isCalcFunction(functionId)) |
| m_calcValue = CSSCalcValue::create(functionId, consumeFunction(m_range), destinationCategory, valueRange, symbolTable); |
| } |
| |
| const CSSCalcValue* value() const { return m_calcValue.get(); } |
| |
| RefPtr<CSSPrimitiveValue> consumeValue() |
| { |
| if (!m_calcValue) |
| return nullptr; |
| m_sourceRange = m_range; |
| return m_pool.createValue(WTFMove(m_calcValue)); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeValueIfCategory(CalculationCategory category) |
| { |
| if (!m_calcValue) |
| return nullptr; |
| |
| if (m_calcValue->category() != category) { |
| LOG_WITH_STREAM(Calc, stream << "CalcParser::consumeValueIfCategory - failing because calc category " << m_calcValue->category() << " does not match requested category " << category); |
| return nullptr; |
| } |
| m_sourceRange = m_range; |
| return m_pool.createValue(WTFMove(m_calcValue)); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeInteger(double minimumValue) |
| { |
| if (!m_calcValue) |
| return nullptr; |
| m_sourceRange = m_range; |
| return m_pool.createValue(std::round(std::max(m_calcValue->doubleValue(), minimumValue)), CSSUnitType::CSS_NUMBER); |
| } |
| |
| template<typename IntType> std::optional<IntType> consumeIntegerTypeRaw(double minimumValue) |
| { |
| if (!m_calcValue) |
| return std::nullopt; |
| m_sourceRange = m_range; |
| return clampTo<IntType>(std::round(std::max(m_calcValue->doubleValue(), minimumValue))); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeNumber() |
| { |
| if (!m_calcValue) |
| return nullptr; |
| m_sourceRange = m_range; |
| return m_pool.createValue(m_calcValue->doubleValue(), CSSUnitType::CSS_NUMBER); |
| } |
| |
| std::optional<double> consumeNumberRaw() |
| { |
| if (!m_calcValue || m_calcValue->category() != CalculationCategory::Number) |
| return std::nullopt; |
| m_sourceRange = m_range; |
| return m_calcValue->doubleValue(); |
| } |
| |
| std::optional<double> consumePercentRaw() |
| { |
| if (!m_calcValue) |
| return std::nullopt; |
| auto category = m_calcValue->category(); |
| if (category != CalculationCategory::Percent) |
| return std::nullopt; |
| m_sourceRange = m_range; |
| return m_calcValue->doubleValue(); |
| } |
| |
| std::optional<AngleRaw> consumeAngleRaw() |
| { |
| if (!m_calcValue || m_calcValue->category() != CalculationCategory::Angle) |
| return std::nullopt; |
| m_sourceRange = m_range; |
| return { { m_calcValue->primitiveType(), m_calcValue->doubleValue() } }; |
| } |
| |
| std::optional<LengthRaw> consumeLengthRaw() |
| { |
| if (!m_calcValue || m_calcValue->category() != CalculationCategory::Length) |
| return std::nullopt; |
| m_sourceRange = m_range; |
| return { { m_calcValue->primitiveType(), m_calcValue->doubleValue() } }; |
| } |
| |
| private: |
| CSSParserTokenRange& m_sourceRange; |
| CSSParserTokenRange m_range; |
| RefPtr<CSSCalcValue> m_calcValue; |
| CSSValuePool& m_pool; |
| }; |
| |
| // MARK: - Primitive value consumers for callers that know the token type. |
| |
| static RefPtr<CSSCalcValue> consumeCalcRawWithKnownTokenTypeFunction(CSSParserTokenRange& range, CalculationCategory category, const CSSCalcSymbolTable& symbolTable = { }, ValueRange valueRange = ValueRange::All) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| const auto& token = range.peek(); |
| auto functionId = token.functionId(); |
| if (!CSSCalcValue::isCalcFunction(functionId)) |
| return nullptr; |
| |
| auto calcValue = CSSCalcValue::create(functionId, consumeFunction(range), category, valueRange, symbolTable); |
| if (calcValue && calcValue->category() == category) |
| return calcValue; |
| |
| return nullptr; |
| } |
| |
| // MARK: Integer (Raw) |
| |
| template<typename IntType> static std::optional<IntType> consumeIntegerTypeRawWithKnownTokenTypeFunction(CSSParserTokenRange& sourceRange, double minimumValue) |
| { |
| auto range = sourceRange; |
| if (auto value = consumeCalcRawWithKnownTokenTypeFunction(range, CalculationCategory::Number, { }, ValueRange::All)) { |
| sourceRange = range; |
| return clampTo<IntType>(std::round(std::max(value->doubleValue(), minimumValue))); |
| } |
| |
| return std::nullopt; |
| } |
| |
| template<typename IntType> static std::optional<IntType> consumeIntegerTypeRawWithKnownTokenTypeNumber(CSSParserTokenRange& range, double minimumValue) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (range.peek().numericValueType() == NumberValueType || range.peek().numericValue() < minimumValue) |
| return std::nullopt; |
| return clampTo<IntType>(range.consumeIncludingWhitespace().numericValue()); |
| } |
| |
| // MARK: Integer (CSSPrimitiveValue - not maintaining calc) |
| |
| template<typename IntType> static RefPtr<CSSPrimitiveValue> consumeIntegerTypeCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, double minimumValue, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| if (auto integer = consumeIntegerTypeRawWithKnownTokenTypeFunction<IntType>(range, minimumValue)) |
| return pool.createValue(*integer, CSSUnitType::CSS_NUMBER); |
| return nullptr; |
| } |
| |
| template<typename IntType> static RefPtr<CSSPrimitiveValue> consumeIntegerTypeCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(CSSParserTokenRange& range, double minimumValue, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (auto integer = consumeIntegerTypeRawWithKnownTokenTypeNumber<IntType>(range, minimumValue)) |
| return pool.createValue(*integer, CSSUnitType::CSS_NUMBER); |
| return nullptr; |
| } |
| |
| // MARK: Number (Raw) |
| |
| static std::optional<double> validatedNumberRaw(double value, ValueRange valueRange) |
| { |
| if (valueRange == ValueRange::NonNegative && value < 0) |
| return std::nullopt; |
| return value; |
| } |
| |
| static std::optional<double> consumeNumberRawWithKnownTokenTypeFunction(CSSParserTokenRange& sourceRange, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange) |
| { |
| auto range = sourceRange; |
| if (auto value = consumeCalcRawWithKnownTokenTypeFunction(range, CalculationCategory::Number, symbolTable, valueRange)) { |
| if (auto validatedValue = validatedNumberRaw(value->doubleValue(), valueRange)) { |
| sourceRange = range; |
| return validatedValue; |
| } |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeNumberRawWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (auto validatedValue = validatedNumberRaw(range.peek().numericValue(), valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return validatedValue; |
| } |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeNumberRawWithKnownTokenTypeIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange) |
| { |
| ASSERT(range.peek().type() == IdentToken); |
| |
| if (auto variable = symbolTable.get(range.peek().id())) { |
| switch (variable->type) { |
| case CSSUnitType::CSS_NUMBER: |
| if (auto validatedValue = validatedNumberRaw(variable->value, valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return validatedValue; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return std::nullopt; |
| } |
| |
| // MARK: Number (CSSPrimitiveValue - maintaining calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumeNumberCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| CalcParser parser(range, CalculationCategory::Number, valueRange, symbolTable, pool); |
| return parser.consumeValueIfCategory(CalculationCategory::Number); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeNumberCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| auto token = range.peek(); |
| |
| if (auto validatedValue = validatedNumberRaw(token.numericValue(), valueRange)) { |
| auto unitType = token.unitType(); |
| range.consumeIncludingWhitespace(); |
| return pool.createValue(*validatedValue, unitType); |
| } |
| return nullptr; |
| } |
| |
| |
| // MARK: Percent (raw) |
| |
| static std::optional<double> validatedPercentRaw(double value, ValueRange valueRange) |
| { |
| if (valueRange == ValueRange::NonNegative && value < 0) |
| return std::nullopt; |
| if (std::isinf(value)) |
| return std::nullopt; |
| return value; |
| } |
| |
| static std::optional<double> consumePercentRawWithKnownTokenTypeFunction(CSSParserTokenRange& sourceRange, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange) |
| { |
| ASSERT(sourceRange.peek().type() == FunctionToken); |
| |
| const auto& token = sourceRange.peek(); |
| auto functionId = token.functionId(); |
| if (!CSSCalcValue::isCalcFunction(functionId)) |
| return std::nullopt; |
| |
| auto range = sourceRange; |
| auto calcValue = CSSCalcValue::create(functionId, consumeFunction(range), CalculationCategory::Percent, valueRange, symbolTable); |
| if (calcValue && calcValue->category() == CalculationCategory::Percent) { |
| sourceRange = range; |
| return calcValue->doubleValue(); |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumePercentRawWithKnownTokenTypePercentage(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange) |
| { |
| ASSERT(range.peek().type() == PercentageToken); |
| |
| if (auto validatedValue = validatedPercentRaw(range.peek().numericValue(), valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return validatedValue; |
| } |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumePercentRawWithKnownTokenTypeIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange) |
| { |
| ASSERT(range.peek().type() == IdentToken); |
| |
| if (auto variable = symbolTable.get(range.peek().id())) { |
| switch (variable->type) { |
| case CSSUnitType::CSS_PERCENTAGE: |
| if (auto validatedValue = validatedPercentRaw(variable->value, valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return validatedValue; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| return std::nullopt; |
| } |
| |
| |
| // MARK: Percent (CSSPrimitiveValue - maintaining calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| CalcParser parser(range, CalculationCategory::Percent, valueRange, symbolTable, pool); |
| return parser.consumeValueIfCategory(CalculationCategory::Percent); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypePercentage(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == PercentageToken); |
| |
| if (auto validatedValue = validatedPercentRaw(range.peek().numericValue(), valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return pool.createValue(*validatedValue, CSSUnitType::CSS_PERCENTAGE); |
| } |
| return nullptr; |
| } |
| |
| // MARK: Length (raw) |
| |
| static std::optional<double> validatedLengthRaw(double value, ValueRange valueRange) |
| { |
| if (valueRange == ValueRange::NonNegative && value < 0) |
| return std::nullopt; |
| if (std::isinf(value)) |
| return std::nullopt; |
| return value; |
| } |
| |
| static std::optional<LengthRaw> consumeLengthRawWithKnownTokenTypeFunction(CSSParserTokenRange& sourceRange, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode, UnitlessQuirk) |
| { |
| auto range = sourceRange; |
| if (auto value = consumeCalcRawWithKnownTokenTypeFunction(range, CalculationCategory::Length, symbolTable, valueRange)) { |
| sourceRange = range; |
| return { { value->primitiveType(), value->doubleValue() } }; |
| } |
| return std::nullopt; |
| } |
| |
| static std::optional<LengthRaw> consumeLengthRawWithKnownTokenTypeDimension(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| auto& token = range.peek(); |
| |
| auto unitType = token.unitType(); |
| switch (unitType) { |
| case CSSUnitType::CSS_QUIRKY_EMS: |
| if (parserMode != UASheetMode) |
| return std::nullopt; |
| FALLTHROUGH; |
| case CSSUnitType::CSS_EMS: |
| case CSSUnitType::CSS_REMS: |
| case CSSUnitType::CSS_LHS: |
| case CSSUnitType::CSS_RLHS: |
| case CSSUnitType::CSS_CHS: |
| case CSSUnitType::CSS_IC: |
| case CSSUnitType::CSS_EXS: |
| case CSSUnitType::CSS_PX: |
| case CSSUnitType::CSS_CM: |
| case CSSUnitType::CSS_MM: |
| case CSSUnitType::CSS_IN: |
| case CSSUnitType::CSS_PT: |
| case CSSUnitType::CSS_PC: |
| case CSSUnitType::CSS_VW: |
| case CSSUnitType::CSS_VH: |
| case CSSUnitType::CSS_VMIN: |
| case CSSUnitType::CSS_VMAX: |
| case CSSUnitType::CSS_SVW: |
| case CSSUnitType::CSS_SVH: |
| case CSSUnitType::CSS_SVMIN: |
| case CSSUnitType::CSS_SVMAX: |
| case CSSUnitType::CSS_LVW: |
| case CSSUnitType::CSS_LVH: |
| case CSSUnitType::CSS_LVMIN: |
| case CSSUnitType::CSS_LVMAX: |
| case CSSUnitType::CSS_DVW: |
| case CSSUnitType::CSS_DVH: |
| case CSSUnitType::CSS_DVMIN: |
| case CSSUnitType::CSS_DVMAX: |
| case CSSUnitType::CSS_Q: |
| break; |
| default: |
| return std::nullopt; |
| } |
| |
| if (auto validatedValue = validatedLengthRaw(token.numericValue(), valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return { { unitType, *validatedValue } }; |
| } |
| return std::nullopt; |
| } |
| |
| static std::optional<LengthRaw> consumeLengthRawWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| auto& token = range.peek(); |
| |
| if (!shouldAcceptUnitlessValue(token.numericValue(), parserMode, unitless, UnitlessZeroQuirk::Allow)) |
| return std::nullopt; |
| |
| if (auto validatedValue = validatedLengthRaw(token.numericValue(), valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return { { CSSUnitType::CSS_PX, *validatedValue } }; |
| } |
| return std::nullopt; |
| } |
| |
| // MARK: Length (CSSPrimitiveValue - maintaining calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode, UnitlessQuirk, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| CalcParser parser(range, CalculationCategory::Length, valueRange, symbolTable, pool); |
| return parser.consumeValueIfCategory(CalculationCategory::Length); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| if (auto lengthRaw = consumeLengthRawWithKnownTokenTypeDimension(range, symbolTable, valueRange, parserMode, unitless)) |
| return pool.createValue(lengthRaw->value, lengthRaw->type); |
| return nullptr; |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (auto lengthRaw = consumeLengthRawWithKnownTokenTypeNumber(range, symbolTable, valueRange, parserMode, unitless)) |
| return pool.createValue(lengthRaw->value, lengthRaw->type); |
| return nullptr; |
| } |
| |
| // MARK: Angle (raw) |
| |
| static std::optional<AngleRaw> consumeAngleRawWithKnownTokenTypeFunction(CSSParserTokenRange& sourceRange, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode, UnitlessQuirk, UnitlessZeroQuirk) |
| { |
| auto range = sourceRange; |
| if (auto value = consumeCalcRawWithKnownTokenTypeFunction(range, CalculationCategory::Angle, symbolTable, valueRange)) { |
| sourceRange = range; |
| return { { value->primitiveType(), value->doubleValue() } }; |
| } |
| return std::nullopt; |
| } |
| |
| static std::optional<AngleRaw> consumeAngleRawWithKnownTokenTypeDimension(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange, CSSParserMode, UnitlessQuirk, UnitlessZeroQuirk) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| auto unitType = range.peek().unitType(); |
| switch (unitType) { |
| case CSSUnitType::CSS_DEG: |
| case CSSUnitType::CSS_RAD: |
| case CSSUnitType::CSS_GRAD: |
| case CSSUnitType::CSS_TURN: |
| return { { unitType, range.consumeIncludingWhitespace().numericValue() } }; |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<AngleRaw> consumeAngleRawWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (shouldAcceptUnitlessValue(range.peek().numericValue(), parserMode, unitless, unitlessZero)) |
| return { { CSSUnitType::CSS_DEG, range.consumeIncludingWhitespace().numericValue() } }; |
| return std::nullopt; |
| } |
| |
| // MARK: Angle (CSSPrimitiveValue - maintaining calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode, UnitlessQuirk, UnitlessZeroQuirk, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| CalcParser parser(range, CalculationCategory::Angle, valueRange, symbolTable, pool); |
| return parser.consumeValueIfCategory(CalculationCategory::Angle); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| if (auto angleRaw = consumeAngleRawWithKnownTokenTypeDimension(range, symbolTable, valueRange, parserMode, unitless, unitlessZero)) |
| return pool.createValue(angleRaw->value, angleRaw->type); |
| return nullptr; |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (auto angleRaw = consumeAngleRawWithKnownTokenTypeNumber(range, symbolTable, valueRange, parserMode, unitless, unitlessZero)) |
| return pool.createValue(angleRaw->value, angleRaw->type); |
| return nullptr; |
| } |
| |
| |
| // MARK: Time (CSSPrimitiveValue - maintaining calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, CSSParserMode, UnitlessQuirk, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == FunctionToken); |
| |
| CalcParser parser(range, CalculationCategory::Time, valueRange, symbolTable, pool); |
| return parser.consumeValueIfCategory(CalculationCategory::Time); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSParserMode, UnitlessQuirk, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| if (valueRange == ValueRange::NonNegative && range.peek().numericValue() < 0) |
| return nullptr; |
| |
| if (auto unit = range.peek().unitType(); unit == CSSUnitType::CSS_MS || unit == CSSUnitType::CSS_S) |
| return pool.createValue(range.consumeIncludingWhitespace().numericValue(), unit); |
| |
| return nullptr; |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(CSSParserTokenRange& range, const CSSCalcSymbolTable&, ValueRange valueRange, CSSParserMode parserMode, UnitlessQuirk unitless, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == NumberToken); |
| |
| if (unitless == UnitlessQuirk::Allow && shouldAcceptUnitlessValue(range.peek().numericValue(), parserMode, unitless, UnitlessZeroQuirk::Allow)) { |
| if (valueRange == ValueRange::NonNegative && range.peek().numericValue() < 0) |
| return nullptr; |
| return pool.createValue(range.consumeIncludingWhitespace().numericValue(), CSSUnitType::CSS_MS); |
| } |
| return nullptr; |
| } |
| |
| // MARK: Resolution (CSSPrimitiveValue - no calc) |
| |
| static RefPtr<CSSPrimitiveValue> consumeResolutionCSSPrimitiveValueWithKnownTokenTypeDimension(CSSParserTokenRange& range, CSSValuePool& pool) |
| { |
| ASSERT(range.peek().type() == DimensionToken); |
| |
| if (auto unit = range.peek().unitType(); unit == CSSUnitType::CSS_DPPX || unit == CSSUnitType::CSS_X || unit == CSSUnitType::CSS_DPI || unit == CSSUnitType::CSS_DPCM) |
| return pool.createValue(range.consumeIncludingWhitespace().numericValue(), unit); |
| |
| return nullptr; |
| } |
| |
| |
| // MARK: - Primitive value consumers for callers that do NOT know the token type. |
| |
| template<typename IntType> std::optional<IntType> consumeIntegerTypeRaw(CSSParserTokenRange& range, double minimumValue) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeIntegerTypeRawWithKnownTokenTypeFunction<IntType>(range, minimumValue); |
| |
| case NumberToken: |
| return consumeIntegerTypeRawWithKnownTokenTypeNumber<IntType>(range, minimumValue); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| template<typename IntType> RefPtr<CSSPrimitiveValue> consumeIntegerType(CSSParserTokenRange& range, double minimumValue, CSSValuePool& pool) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeIntegerTypeCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction<IntType>(range, minimumValue, pool); |
| |
| case NumberToken: |
| return consumeIntegerTypeCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber<IntType>(range, minimumValue, pool); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<int> consumeIntegerRaw(CSSParserTokenRange& range, double minimumValue) |
| { |
| return consumeIntegerTypeRaw<int>(range, minimumValue); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeInteger(CSSParserTokenRange& range, double minimumValue) |
| { |
| return consumeIntegerType<int>(range, minimumValue, CSSValuePool::singleton()); |
| } |
| |
| std::optional<unsigned> consumePositiveIntegerRaw(CSSParserTokenRange& range) |
| { |
| return consumeIntegerTypeRaw<unsigned>(range, 1); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumePositiveInteger(CSSParserTokenRange& range) |
| { |
| return consumeIntegerType<unsigned>(range, 1, CSSValuePool::singleton()); |
| } |
| |
| std::optional<double> consumeNumberRaw(CSSParserTokenRange& range, ValueRange valueRange) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeNumberRawWithKnownTokenTypeFunction(range, { }, valueRange); |
| |
| case NumberToken: |
| return consumeNumberRawWithKnownTokenTypeNumber(range, { }, valueRange); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeNumber(CSSParserTokenRange& range, ValueRange valueRange) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeNumberCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, CSSValuePool::singleton()); |
| |
| case NumberToken: |
| return consumeNumberCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, valueRange, CSSValuePool::singleton()); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<LengthRaw> consumeLengthRaw(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeLengthRawWithKnownTokenTypeFunction(range, { }, valueRange, parserMode, unitless); |
| |
| case DimensionToken: |
| return consumeLengthRawWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless); |
| |
| case NumberToken: |
| return consumeLengthRawWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeLength(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case DimensionToken: |
| return consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case NumberToken: |
| return consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<double> consumePercentRaw(CSSParserTokenRange& range, ValueRange valueRange) |
| { |
| const auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumePercentRawWithKnownTokenTypeFunction(range, { }, valueRange); |
| |
| case PercentageToken: |
| return consumePercentRawWithKnownTokenTypePercentage(range, { }, valueRange); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumePercent(CSSParserTokenRange& range, ValueRange valueRange) |
| { |
| return consumePercentWorkerSafe(range, valueRange, CSSValuePool::singleton()); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumePercentWorkerSafe(CSSParserTokenRange& range, ValueRange valueRange, CSSValuePool& pool) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, pool); |
| |
| case PercentageToken: |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypePercentage(range, { }, valueRange, pool); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<AngleRaw> consumeAngleRaw(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeAngleRawWithKnownTokenTypeFunction(range, { }, ValueRange::All, parserMode, unitless, unitlessZero); |
| |
| case DimensionToken: |
| return consumeAngleRawWithKnownTokenTypeDimension(range, { }, ValueRange::All, parserMode, unitless, unitlessZero); |
| |
| case NumberToken: |
| return consumeAngleRawWithKnownTokenTypeNumber(range, { }, ValueRange::All, parserMode, unitless, unitlessZero); |
| break; |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeAngle(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero) |
| { |
| return consumeAngleWorkerSafe(range, parserMode, CSSValuePool::singleton(), unitless, unitlessZero); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeAngleWorkerSafe(CSSParserTokenRange& range, CSSParserMode parserMode, CSSValuePool& pool, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, ValueRange::All, parserMode, unitless, unitlessZero, pool); |
| |
| case DimensionToken: |
| return consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(range, { }, ValueRange::All, parserMode, unitless, unitlessZero, pool); |
| |
| case NumberToken: |
| return consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, ValueRange::All, parserMode, unitless, unitlessZero, pool); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeTime(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case DimensionToken: |
| return consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case NumberToken: |
| return consumeTimeCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeResolution(CSSParserTokenRange& range) |
| { |
| // NOTE: Unlike the other types, calc() does not work with <resolution>. |
| |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case DimensionToken: |
| return consumeResolutionCSSPrimitiveValueWithKnownTokenTypeDimension(range, CSSValuePool::singleton()); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| // MARK: - Combination consumers (token type unknown by caller). |
| |
| static RefPtr<CSSPrimitiveValue> consumeAngleOrPercent(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless, UnitlessZeroQuirk unitlessZero, CSSValuePool& pool = CSSValuePool::singleton()) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| if (auto value = consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, parserMode, unitless, unitlessZero, pool)) |
| return value; |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, pool); |
| |
| case DimensionToken: |
| return consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless, unitlessZero, pool); |
| |
| case NumberToken: |
| return consumeAngleCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless, unitlessZero, pool); |
| |
| case PercentageToken: |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypePercentage(range, { }, valueRange, pool); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<LengthOrPercentRaw> consumeLengthOrPercentRaw(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless) |
| { |
| auto convertToLengthOrPercentRaw = [](auto result) -> std::optional<LengthOrPercentRaw> { |
| if (result) |
| return { *result }; |
| return std::nullopt; |
| }; |
| |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: { |
| if (auto length = consumeLengthRawWithKnownTokenTypeFunction(range, { }, valueRange, parserMode, unitless)) |
| return convertToLengthOrPercentRaw(length); |
| if (auto percent = consumePercentRawWithKnownTokenTypeFunction(range, { }, valueRange)) |
| return convertToLengthOrPercentRaw(percent); |
| break; |
| } |
| |
| case DimensionToken: |
| return convertToLengthOrPercentRaw(consumeLengthRawWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless)); |
| |
| case NumberToken: |
| return convertToLengthOrPercentRaw(consumeLengthRawWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless)); |
| |
| case PercentageToken: |
| return convertToLengthOrPercentRaw(consumePercentRawWithKnownTokenTypePercentage(range, { }, valueRange)); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeLengthOrPercent(CSSParserTokenRange& range, CSSParserMode parserMode, ValueRange valueRange, UnitlessQuirk unitless) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: { |
| // FIXME: Should this be using trying to generate the calc with both Length and Percent destination category types? |
| CalcParser parser(range, CalculationCategory::Length, valueRange); |
| if (auto calculation = parser.value(); calculation && canConsumeCalcValue(calculation->category(), parserMode)) |
| return parser.consumeValue(); |
| break; |
| } |
| |
| case DimensionToken: |
| return consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeDimension(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case NumberToken: |
| return consumeLengthCSSPrimitiveValueWithCalcWithKnownTokenTypeNumber(range, { }, valueRange, parserMode, unitless, CSSValuePool::singleton()); |
| |
| case PercentageToken: |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypePercentage(range, { }, valueRange, CSSValuePool::singleton()); |
| |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| // MARK: - Combination consumers that allow lookup in the symbol table for IdentTokens (by default, other consumers only lookup in the symbol table for calc()). |
| |
| static std::optional<double> consumeNumberAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange = ValueRange::All) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumeNumberRawWithKnownTokenTypeFunction(range, symbolTable, valueRange); |
| |
| case NumberToken: |
| return consumeNumberRawWithKnownTokenTypeNumber(range, symbolTable, valueRange); |
| |
| case IdentToken: |
| return consumeNumberRawWithKnownTokenTypeIdent(range, symbolTable, valueRange); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumePercentAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange = ValueRange::All) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| return consumePercentRawWithKnownTokenTypeFunction(range, symbolTable, valueRange); |
| |
| case PercentageToken: |
| return consumePercentRawWithKnownTokenTypePercentage(range, symbolTable, valueRange); |
| |
| case IdentToken: |
| return consumePercentRawWithKnownTokenTypeIdent(range, symbolTable, valueRange); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeAngleRawOrNumberRaw(CSSParserTokenRange& range, CSSParserMode parserMode) |
| { |
| auto computeDegrees = [](auto angleRaw) -> std::optional<double> { |
| if (angleRaw) |
| return CSSPrimitiveValue::computeDegrees(angleRaw->type, angleRaw->value); |
| return std::nullopt; |
| }; |
| |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| if (auto angleRaw = consumeAngleRawWithKnownTokenTypeFunction(range, { }, ValueRange::All, parserMode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Forbid)) |
| return computeDegrees(angleRaw); |
| return consumeNumberRawWithKnownTokenTypeFunction(range, { }, ValueRange::All); |
| |
| case DimensionToken: |
| return computeDegrees(consumeAngleRawWithKnownTokenTypeDimension(range, { }, ValueRange::All, parserMode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Forbid)); |
| |
| case NumberToken: |
| return consumeNumberRawWithKnownTokenTypeNumber(range, { }, ValueRange::All); |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeAngleRawOrNumberRawAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, CSSParserMode parserMode) |
| { |
| auto computeDegrees = [](auto angleRaw) -> std::optional<double> { |
| if (angleRaw) |
| return CSSPrimitiveValue::computeDegrees(angleRaw->type, angleRaw->value); |
| return std::nullopt; |
| }; |
| |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| if (auto angleRaw = consumeAngleRawWithKnownTokenTypeFunction(range, symbolTable, ValueRange::All, parserMode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Forbid)) |
| return computeDegrees(angleRaw); |
| return consumeNumberRawWithKnownTokenTypeFunction(range, symbolTable, ValueRange::All); |
| |
| case DimensionToken: |
| return computeDegrees(consumeAngleRawWithKnownTokenTypeDimension(range, { }, ValueRange::All, parserMode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Forbid)); |
| |
| case NumberToken: |
| return consumeNumberRawWithKnownTokenTypeNumber(range, { }, ValueRange::All); |
| |
| case IdentToken: |
| if (auto variable = symbolTable.get(token.id())) { |
| switch (variable->type) { |
| case CSSUnitType::CSS_DEG: |
| case CSSUnitType::CSS_RAD: |
| case CSSUnitType::CSS_GRAD: |
| case CSSUnitType::CSS_TURN: |
| range.consumeIncludingWhitespace(); |
| return CSSPrimitiveValue::computeDegrees(variable->type, variable->value); |
| |
| case CSSUnitType::CSS_NUMBER: |
| range.consumeIncludingWhitespace(); |
| return variable->value; |
| |
| default: |
| break; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| // MARK: - Combination consumers with transformations based on result type. |
| |
| template<typename NumberTransformer, typename PercentTransformer> |
| static auto consumeNumberRawOrPercentRaw(CSSParserTokenRange& range, ValueRange valueRange, NumberTransformer&& numberTransformer, PercentTransformer&& percentTransformer) -> std::optional<decltype(numberTransformer(std::declval<double>()))> |
| { |
| const auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: { |
| if (auto number = consumeNumberRawWithKnownTokenTypeFunction(range, { }, valueRange)) |
| return numberTransformer(*number); |
| if (auto percent = consumePercentRawWithKnownTokenTypeFunction(range, { }, valueRange)) |
| return percentTransformer(*percent); |
| break; |
| } |
| |
| case PercentageToken: |
| if (auto percent = consumePercentRawWithKnownTokenTypePercentage(range, { }, valueRange)) |
| return percentTransformer(*percent); |
| break; |
| |
| case NumberToken: |
| if (auto number = consumeNumberRawWithKnownTokenTypeNumber(range, { }, valueRange)) |
| return numberTransformer(*number); |
| break; |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeNumberRawOrPercentDividedBy100Raw(CSSParserTokenRange& range, ValueRange valueRange = ValueRange::All) |
| { |
| return consumeNumberRawOrPercentRaw(range, valueRange, [](double number) { return number; }, [](double percent) { return percent / 100.0; }); |
| } |
| |
| // MARK: - Combination consumers that both allow lookup in the symbol table for IdentTokens and transformations based on result type. |
| |
| template<typename NumberTransformer, typename PercentTransformer> |
| static auto consumeNumberRawOrPercentRawAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange, NumberTransformer&& numberTransformer, PercentTransformer&& percentTransformer) -> std::optional<decltype(numberTransformer(std::declval<double>()))> |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: { |
| if (auto number = consumeNumberRawWithKnownTokenTypeFunction(range, symbolTable, valueRange)) |
| return numberTransformer(*number); |
| if (auto percent = consumePercentRawWithKnownTokenTypeFunction(range, symbolTable, valueRange)) |
| return percentTransformer(*percent); |
| break; |
| } |
| |
| case PercentageToken: |
| if (auto percent = consumePercentRawWithKnownTokenTypePercentage(range, symbolTable, valueRange)) |
| return percentTransformer(*percent); |
| break; |
| |
| case NumberToken: |
| if (auto number = consumeNumberRawWithKnownTokenTypeNumber(range, symbolTable, valueRange)) |
| return numberTransformer(*number); |
| break; |
| |
| case IdentToken: |
| if (auto variable = symbolTable.get(range.peek().id())) { |
| switch (variable->type) { |
| case CSSUnitType::CSS_PERCENTAGE: |
| if (auto validatedValue = validatedPercentRaw(variable->value, valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return percentTransformer(*validatedValue); |
| } |
| break; |
| |
| case CSSUnitType::CSS_NUMBER: |
| if (auto validatedValue = validatedNumberRaw(variable->value, valueRange)) { |
| range.consumeIncludingWhitespace(); |
| return numberTransformer(*validatedValue); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeNumberRawOrPercentDividedBy100RawAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable, ValueRange valueRange) |
| { |
| return consumeNumberRawOrPercentRawAllowingSymbolTableIdent(range, symbolTable, valueRange, [](double number) { return number; }, [](double percent) { return percent / 100.0; }); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeNumberOrPercent(CSSParserTokenRange& range, ValueRange valueRange) |
| { |
| auto& token = range.peek(); |
| |
| switch (token.type()) { |
| case FunctionToken: |
| if (auto value = consumeNumberCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, CSSValuePool::singleton())) |
| return value; |
| return consumePercentCSSPrimitiveValueWithCalcWithKnownTokenTypeFunction(range, { }, valueRange, CSSValuePool::singleton()); |
| |
| case NumberToken: |
| case PercentageToken: { |
| auto value = consumeNumberRawOrPercentDividedBy100Raw(range, valueRange); |
| if (value) |
| return CSSValuePool::singleton().createValue(*value, CSSUnitType::CSS_NUMBER); |
| break; |
| } |
| default: |
| break; |
| } |
| |
| return nullptr; |
| } |
| |
| std::optional<double> consumeFontWeightNumberRaw(CSSParserTokenRange& range) |
| { |
| // Values less than or equal to 0 or greater than or equal to 1000 are parse errors. |
| |
| #if !ENABLE(VARIATION_FONTS) |
| auto isIntegerAndDivisibleBy100 = [](double value) { |
| ASSERT(value > 0 && value <= 1000); |
| return static_cast<int>(value / 100) * 100 == value; |
| }; |
| #endif |
| |
| auto& token = range.peek(); |
| switch (token.type()) { |
| case FunctionToken: { |
| // "[For calc()], the used value resulting from an expression must be clamped to the range allowed in the target context." |
| auto result = consumeNumberRawWithKnownTokenTypeFunction(range, { }, ValueRange::All); |
| if (!result) |
| break; |
| #if !ENABLE(VARIATION_FONTS) |
| if (!(*result > 0 && *result < 1000) || !isIntegerAndDivisibleBy100(*result)) |
| break; |
| #endif |
| return std::clamp(*result, std::nextafter(0.0, 1.0), std::nextafter(1000.0, 0.0)); |
| } |
| |
| case NumberToken: { |
| auto result = token.numericValue(); |
| |
| // FIXME: This allows value of 1000, unlike the comment above and the behavior of the FunctionToken parsing path. |
| if (!(result >= 1 && result <= 1000)) |
| break; |
| #if !ENABLE(VARIATION_FONTS) |
| if (token.numericValueType() != IntegerValueType || !isIntegerAndDivisibleBy100(result)) |
| break; |
| #endif |
| range.consumeIncludingWhitespace(); |
| return result; |
| } |
| |
| default: |
| break; |
| } |
| |
| return std::nullopt; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeFontWeightNumber(CSSParserTokenRange& range) |
| { |
| return consumeFontWeightNumberWorkerSafe(range, CSSValuePool::singleton()); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeFontWeightNumberWorkerSafe(CSSParserTokenRange& range, CSSValuePool& pool) |
| { |
| if (auto result = consumeFontWeightNumberRaw(range)) |
| return pool.createValue(*result, CSSUnitType::CSS_NUMBER); |
| return nullptr; |
| } |
| |
| std::optional<CSSValueID> consumeIdentRaw(CSSParserTokenRange& range) |
| { |
| if (range.peek().type() != IdentToken) |
| return std::nullopt; |
| return range.consumeIncludingWhitespace().id(); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeIdent(CSSParserTokenRange& range) |
| { |
| return consumeIdentWorkerSafe(range, CSSValuePool::singleton()); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeIdentWorkerSafe(CSSParserTokenRange& range, CSSValuePool& pool) |
| { |
| if (auto result = consumeIdentRaw(range)) |
| return pool.createIdentifierValue(*result); |
| return nullptr; |
| } |
| |
| std::optional<CSSValueID> consumeIdentRangeRaw(CSSParserTokenRange& range, CSSValueID lower, CSSValueID upper) |
| { |
| if (range.peek().id() < lower || range.peek().id() > upper) |
| return std::nullopt; |
| return consumeIdentRaw(range); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeIdentRange(CSSParserTokenRange& range, CSSValueID lower, CSSValueID upper) |
| { |
| if (range.peek().id() < lower || range.peek().id() > upper) |
| return nullptr; |
| return consumeIdent(range); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeCustomIdent(CSSParserTokenRange& range, bool shouldLowercase) |
| { |
| if (range.peek().type() != IdentToken || !isValidCustomIdentifier(range.peek().id())) |
| return nullptr; |
| auto identifier = range.consumeIncludingWhitespace().value(); |
| return CSSValuePool::singleton().createCustomIdent(shouldLowercase ? identifier.convertToASCIILowercase() : identifier.toString()); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeDashedIdent(CSSParserTokenRange& range, bool shouldLowercase) |
| { |
| auto result = consumeCustomIdent(range, shouldLowercase); |
| if (result && result->stringValue().startsWith("--")) |
| return result; |
| return nullptr; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeString(CSSParserTokenRange& range) |
| { |
| if (range.peek().type() != StringToken) |
| return nullptr; |
| return CSSValuePool::singleton().createValue(range.consumeIncludingWhitespace().value().toString(), CSSUnitType::CSS_STRING); |
| } |
| |
| StringView consumeUrlAsStringView(CSSParserTokenRange& range) |
| { |
| const CSSParserToken& token = range.peek(); |
| if (token.type() == UrlToken) { |
| range.consumeIncludingWhitespace(); |
| return token.value(); |
| } |
| if (token.functionId() == CSSValueUrl) { |
| CSSParserTokenRange urlRange = range; |
| CSSParserTokenRange urlArgs = urlRange.consumeBlock(); |
| const CSSParserToken& next = urlArgs.consumeIncludingWhitespace(); |
| if (next.type() == BadStringToken || !urlArgs.atEnd()) |
| return StringView(); |
| ASSERT(next.type() == StringToken); |
| range = urlRange; |
| range.consumeWhitespace(); |
| return next.value(); |
| } |
| |
| return { }; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeUrl(CSSParserTokenRange& range) |
| { |
| StringView url = consumeUrlAsStringView(range); |
| if (url.isNull()) |
| return nullptr; |
| return CSSValuePool::singleton().createValue(url.toString(), CSSUnitType::CSS_URI); |
| } |
| |
| static Color consumeOriginColor(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| auto value = consumeColor(args, context); |
| if (!value) |
| return { }; |
| |
| if (value->isRGBColor()) |
| return value->color(); |
| |
| ASSERT(value->isValueID()); |
| auto keyword = value->valueID(); |
| |
| // FIXME: We don't have enough context in the parser to resolving a system keyword |
| // correctly. We should package up the relative color parameters and resolve the |
| // whole thing at the appropriate time when the origin color is a system keyword. |
| if (StyleColor::isSystemColorKeyword(keyword)) |
| return { }; |
| |
| return StyleColor::colorFromKeyword(keyword, { }); |
| } |
| |
| static std::optional<double> consumeOptionalAlpha(CSSParserTokenRange& range) |
| { |
| if (!consumeSlashIncludingWhitespace(range)) |
| return 1.0; |
| |
| if (auto alphaParameter = consumeNumberRawOrPercentDividedBy100Raw(range)) |
| return std::clamp(*alphaParameter, 0.0, 1.0); |
| |
| return std::nullopt; |
| } |
| |
| static std::optional<double> consumeOptionalAlphaAllowingSymbolTableIdent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable) |
| { |
| if (!consumeSlashIncludingWhitespace(range)) |
| return 1.0; |
| |
| if (auto alphaParameter = consumeNumberRawOrPercentDividedBy100RawAllowingSymbolTableIdent(range, symbolTable, ValueRange::All)) |
| return std::clamp(*alphaParameter, 0.0, 1.0); |
| |
| return std::nullopt; |
| } |
| |
| static double normalizeHue(double hue) |
| { |
| return std::fmod(std::fmod(hue, 360.0) + 360.0, 360.0); |
| } |
| |
| static uint8_t normalizeRGBComponentNumber(double value) |
| { |
| return convertPrescaledSRGBAFloatToSRGBAByte(value); |
| } |
| |
| static uint8_t normalizeRGBComponentPercentage(double value) |
| { |
| return convertPrescaledSRGBAFloatToSRGBAByte(value / 100.0 * 255.0); |
| } |
| |
| static std::optional<uint8_t> consumeRelativeRGBComponent(CSSParserTokenRange& range, const CSSCalcSymbolTable& symbolTable) |
| { |
| return consumeNumberRawOrPercentRawAllowingSymbolTableIdent(range, symbolTable, ValueRange::All, normalizeRGBComponentNumber, normalizeRGBComponentPercentage); |
| } |
| |
| enum class RGBComponentType { Number, Percentage }; |
| static uint8_t clampRGBComponent(double value, RGBComponentType componentType) |
| { |
| switch (componentType) { |
| case RGBComponentType::Number: |
| return normalizeRGBComponentNumber(value); |
| case RGBComponentType::Percentage: |
| return normalizeRGBComponentPercentage(value); |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| enum class RGBOrHSLSeparatorSyntax { Commas, WhitespaceSlash }; |
| |
| static bool consumeRGBOrHSLSeparator(CSSParserTokenRange& args, RGBOrHSLSeparatorSyntax syntax) |
| { |
| if (syntax == RGBOrHSLSeparatorSyntax::Commas) |
| return consumeCommaIncludingWhitespace(args); |
| return true; |
| } |
| |
| static bool consumeRGBOrHSLAlphaSeparator(CSSParserTokenRange& args, RGBOrHSLSeparatorSyntax syntax) |
| { |
| if (syntax == RGBOrHSLSeparatorSyntax::Commas) |
| return consumeCommaIncludingWhitespace(args); |
| return consumeSlashIncludingWhitespace(args); |
| } |
| |
| static std::optional<double> consumeRGBOrHSLOptionalAlpha(CSSParserTokenRange& args, RGBOrHSLSeparatorSyntax syntax) |
| { |
| if (!consumeRGBOrHSLAlphaSeparator(args, syntax)) |
| return 1.0; |
| |
| return consumeNumberRawOrPercentDividedBy100Raw(args); |
| } |
| |
| static Color parseRelativeRGBParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| auto originColorAsSRGB = originColor.toColorTypeLossy<SRGBA<float>>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueR, CSSUnitType::CSS_PERCENTAGE, originColorAsSRGB.red * 100.0 }, |
| { CSSValueG, CSSUnitType::CSS_PERCENTAGE, originColorAsSRGB.green * 100.0 }, |
| { CSSValueB, CSSUnitType::CSS_PERCENTAGE, originColorAsSRGB.blue * 100.0 }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsSRGB.alpha * 100.0 } |
| }; |
| |
| auto red = consumeRelativeRGBComponent(args, symbolTable); |
| if (!red) |
| return { }; |
| |
| auto green = consumeRelativeRGBComponent(args, symbolTable); |
| if (!green) |
| return { }; |
| |
| auto blue = consumeRelativeRGBComponent(args, symbolTable); |
| if (!blue) |
| return { }; |
| |
| auto alpha = consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedAlpha = convertFloatAlphaTo<uint8_t>(*alpha); |
| |
| return SRGBA<uint8_t> { *red, *green, *blue, normalizedAlpha }; |
| } |
| |
| static Color parseNonRelativeRGBParameters(CSSParserTokenRange& args) |
| { |
| struct InitialComponent { |
| double value; |
| RGBComponentType type; |
| }; |
| |
| auto consumeInitialComponent = [](auto& args) -> std::optional<InitialComponent> { |
| if (auto number = consumeNumberRaw(args)) |
| return { { *number, RGBComponentType::Number } }; |
| if (auto percent = consumePercentRaw(args)) |
| return { { *percent, RGBComponentType::Percentage } }; |
| return std::nullopt; |
| }; |
| |
| auto consumeComponent = [](auto& args, auto componentType) { |
| switch (componentType) { |
| case RGBComponentType::Percentage: |
| return consumePercentRaw(args); |
| case RGBComponentType::Number: |
| return consumeNumberRaw(args); |
| } |
| RELEASE_ASSERT_NOT_REACHED(); |
| }; |
| |
| auto initialComponent = consumeInitialComponent(args); |
| if (!initialComponent) |
| return { }; |
| |
| auto componentType = initialComponent->type; |
| auto red = initialComponent->value; |
| |
| auto syntax = consumeCommaIncludingWhitespace(args) ? RGBOrHSLSeparatorSyntax::Commas : RGBOrHSLSeparatorSyntax::WhitespaceSlash; |
| |
| auto green = consumeComponent(args, componentType); |
| if (!green) |
| return { }; |
| |
| if (!consumeRGBOrHSLSeparator(args, syntax)) |
| return { }; |
| |
| auto blue = consumeComponent(args, componentType); |
| if (!blue) |
| return { }; |
| |
| auto alpha = consumeRGBOrHSLOptionalAlpha(args, syntax); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedRed = clampRGBComponent(red, componentType); |
| auto normalizedGreen = clampRGBComponent(*green, componentType); |
| auto normalizedBlue = clampRGBComponent(*blue, componentType); |
| auto normalizedAlpha = convertFloatAlphaTo<uint8_t>(*alpha); |
| |
| return SRGBA<uint8_t> { normalizedRed, normalizedGreen, normalizedBlue, normalizedAlpha }; |
| } |
| |
| enum class RGBFunctionMode { RGB, RGBA }; |
| |
| template<RGBFunctionMode Mode> static Color parseRGBParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == (Mode == RGBFunctionMode::RGB ? CSSValueRgb : CSSValueRgba)); |
| auto args = consumeFunction(range); |
| |
| if constexpr (Mode == RGBFunctionMode::RGB) { |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeRGBParameters(args, context); |
| } |
| return parseNonRelativeRGBParameters(args); |
| } |
| |
| static Color colorByNormalizingHSLComponents(double hue, double saturation, double lightness, double alpha) |
| { |
| auto normalizedHue = normalizeHue(hue); |
| auto normalizedSaturation = std::clamp(saturation, 0.0, 100.0); |
| auto normalizedLightness = std::clamp(lightness, 0.0, 100.0); |
| auto normalizedAlpha = std::clamp(alpha, 0.0, 1.0); |
| |
| // NOTE: The explicit conversion to SRGBA<uint8_t> is intentional for performance (no extra allocation for |
| // the extended color) and compatability, forcing serialiazation to use the rgb()/rgba() form. |
| return convertColor<SRGBA<uint8_t>>(HSLA<float> { static_cast<float>(normalizedHue), static_cast<float>(normalizedSaturation), static_cast<float>(normalizedLightness), static_cast<float>(normalizedAlpha) }); |
| } |
| |
| static Color parseRelativeHSLParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| auto originColorAsHSL = originColor.toColorTypeLossy<HSLA<float>>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueH, CSSUnitType::CSS_DEG, originColorAsHSL.hue }, |
| { CSSValueS, CSSUnitType::CSS_PERCENTAGE, originColorAsHSL.saturation }, |
| { CSSValueL, CSSUnitType::CSS_PERCENTAGE, originColorAsHSL.lightness }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsHSL.alpha * 100.0 } |
| }; |
| |
| auto hue = consumeAngleRawOrNumberRawAllowingSymbolTableIdent(args, symbolTable, context.mode); |
| if (!hue) |
| return { }; |
| |
| auto saturation = consumePercentAllowingSymbolTableIdent(args, symbolTable); |
| if (!saturation) |
| return { }; |
| |
| auto lightness = consumePercentAllowingSymbolTableIdent(args, symbolTable); |
| if (!lightness) |
| return { }; |
| |
| auto alpha = consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| return colorByNormalizingHSLComponents(*hue, *saturation, *lightness, *alpha); |
| } |
| |
| static Color parseNonRelativeHSLParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| auto hue = consumeAngleRawOrNumberRaw(args, context.mode); |
| if (!hue) |
| return { }; |
| |
| auto syntax = consumeCommaIncludingWhitespace(args) ? RGBOrHSLSeparatorSyntax::Commas : RGBOrHSLSeparatorSyntax::WhitespaceSlash; |
| |
| auto saturation = consumePercentRaw(args); |
| if (!saturation) |
| return { }; |
| |
| if (!consumeRGBOrHSLSeparator(args, syntax)) |
| return { }; |
| |
| auto lightness = consumePercentRaw(args); |
| if (!lightness) |
| return { }; |
| |
| auto alpha = consumeRGBOrHSLOptionalAlpha(args, syntax); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| return colorByNormalizingHSLComponents(*hue, *saturation, *lightness, *alpha); |
| } |
| |
| enum class HSLFunctionMode { HSL, HSLA }; |
| |
| template<HSLFunctionMode Mode> static Color parseHSLParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == (Mode == HSLFunctionMode::HSL ? CSSValueHsl : CSSValueHsla)); |
| auto args = consumeFunction(range); |
| |
| if constexpr (Mode == HSLFunctionMode::HSL) { |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeHSLParameters(args, context); |
| } |
| |
| return parseNonRelativeHSLParameters(args, context); |
| } |
| |
| template<typename ComponentType> struct WhitenessBlackness { |
| ComponentType whiteness; |
| ComponentType blackness; |
| }; |
| |
| template<typename ComponentType> static auto normalizeWhitenessBlackness(ComponentType whiteness, ComponentType blackness) -> WhitenessBlackness<ComponentType> |
| { |
| // Values outside of these ranges are not invalid, but are clamped to the |
| // ranges defined here at computed-value time. |
| WhitenessBlackness<ComponentType> result { |
| clampTo<ComponentType>(whiteness, 0.0, 100.0), |
| clampTo<ComponentType>(blackness, 0.0, 100.0) |
| }; |
| |
| // If the sum of these two arguments is greater than 100%, then at |
| // computed-value time they are further normalized to add up to 100%, with |
| // the same relative ratio. |
| if (auto sum = result.whiteness + result.blackness; sum >= 100) { |
| result.whiteness *= 100.0 / sum; |
| result.blackness *= 100.0 / sum; |
| } |
| |
| return result; |
| } |
| |
| template<typename ConsumerForHue, typename ConsumerForWhitenessAndBlackness, typename ConsumerForAlpha> |
| static Color parseHWBParameters(CSSParserTokenRange& args, ConsumerForHue&& hueConsumer, ConsumerForWhitenessAndBlackness&& whitenessAndBlacknessConsumer, ConsumerForAlpha&& alphaConsumer) |
| { |
| auto hue = hueConsumer(args); |
| if (!hue) |
| return { }; |
| |
| auto whiteness = whitenessAndBlacknessConsumer(args); |
| if (!whiteness) |
| return { }; |
| |
| auto blackness = whitenessAndBlacknessConsumer(args); |
| if (!blackness) |
| return { }; |
| |
| auto alpha = alphaConsumer(args); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedHue = normalizeHue(*hue); |
| auto [normalizedWhitness, normalizedBlackness] = normalizeWhitenessBlackness(*whiteness, *blackness); |
| |
| // NOTE: The explicit conversion to SRGBA<uint8_t> is intentional for performance (no extra allocation for |
| // the extended color) and compatability, forcing serialiazation to use the rgb()/rgba() form. |
| return convertColor<SRGBA<uint8_t>>(HWBA<float> { static_cast<float>(normalizedHue), static_cast<float>(normalizedWhitness), static_cast<float>(normalizedBlackness), static_cast<float>(*alpha) }); |
| } |
| |
| static Color parseRelativeHWBParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| auto originColorAsHWB = originColor.toColorTypeLossy<HWBA<float>>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueH, CSSUnitType::CSS_DEG, originColorAsHWB.hue }, |
| { CSSValueW, CSSUnitType::CSS_PERCENTAGE, originColorAsHWB.whiteness }, |
| { CSSValueB, CSSUnitType::CSS_PERCENTAGE, originColorAsHWB.blackness }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsHWB.alpha * 100.0 } |
| }; |
| |
| auto hueConsumer = [&symbolTable, &context](auto& args) { return consumeAngleRawOrNumberRawAllowingSymbolTableIdent(args, symbolTable, context.mode); }; |
| auto whitenessAndBlacknessConsumer = [&symbolTable](auto& args) { return consumePercentAllowingSymbolTableIdent(args, symbolTable); }; |
| auto alphaConsumer = [&symbolTable](auto& args) { return consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); }; |
| |
| return parseHWBParameters(args, WTFMove(hueConsumer), WTFMove(whitenessAndBlacknessConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| static Color parseNonRelativeHWBParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| auto hueConsumer = [&context](auto& args) { return consumeAngleRawOrNumberRaw(args, context.mode); }; |
| auto whitenessAndBlacknessConsumer = [](auto& args) { return consumePercentRaw(args); }; |
| auto alphaConsumer = [](auto& args) { return consumeOptionalAlpha(args); }; |
| |
| return parseHWBParameters(args, WTFMove(hueConsumer), WTFMove(whitenessAndBlacknessConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| static Color parseHWBParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueHwb); |
| |
| if (!context.cssColor4) |
| return { }; |
| |
| auto args = consumeFunction(range); |
| |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeHWBParameters(args, context); |
| return parseNonRelativeHWBParameters(args, context); |
| } |
| |
| template<typename ColorType, typename ConsumerForLightness, typename ConsumerForAB, typename ConsumerForAlpha> |
| static Color parseLabParameters(CSSParserTokenRange& args, ConsumerForLightness&& lightnessConsumer, ConsumerForAB&& abConsumer, ConsumerForAlpha&& alphaConsumer) |
| { |
| auto lightness = lightnessConsumer(args); |
| if (!lightness) |
| return { }; |
| |
| auto aValue = abConsumer(args); |
| if (!aValue) |
| return { }; |
| |
| auto bValue = abConsumer(args); |
| if (!bValue) |
| return { }; |
| |
| auto alpha = alphaConsumer(args); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedLightness = std::max(0.0, *lightness); |
| |
| return ColorType { static_cast<float>(normalizedLightness), static_cast<float>(*aValue), static_cast<float>(*bValue), static_cast<float>(*alpha) }; |
| } |
| |
| template<typename ColorType> |
| static Color parseRelativeLabParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| auto originColorAsLab = originColor.toColorTypeLossy<ColorType>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueL, CSSUnitType::CSS_PERCENTAGE, originColorAsLab.lightness }, |
| { CSSValueA, CSSUnitType::CSS_NUMBER, originColorAsLab.a }, |
| { CSSValueB, CSSUnitType::CSS_NUMBER, originColorAsLab.b }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsLab.alpha * 100.0 } |
| }; |
| |
| auto lightnessConsumer = [&symbolTable](auto& args) { return consumePercentAllowingSymbolTableIdent(args, symbolTable); }; |
| auto abConsumer = [&symbolTable](auto& args) { return consumeNumberAllowingSymbolTableIdent(args, symbolTable); }; |
| auto alphaConsumer = [&symbolTable](auto& args) { return consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); }; |
| |
| return parseLabParameters<ColorType>(args, WTFMove(lightnessConsumer), WTFMove(abConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| template<typename ColorType> |
| static Color parseNonRelativeLabParameters(CSSParserTokenRange& args) |
| { |
| auto lightnessConsumer = [](auto& args) { return consumePercentRaw(args); }; |
| auto abConsumer = [](auto& args) { return consumeNumberRaw(args); }; |
| auto alphaConsumer = [](auto& args) { return consumeOptionalAlpha(args); }; |
| |
| return parseLabParameters<ColorType>(args, WTFMove(lightnessConsumer), WTFMove(abConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| template<typename ColorType> |
| static Color parseLabParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueLab || range.peek().functionId() == CSSValueOklab); |
| |
| if (!context.cssColor4) |
| return { }; |
| |
| auto args = consumeFunction(range); |
| |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeLabParameters<ColorType>(args, context); |
| return parseNonRelativeLabParameters<ColorType>(args); |
| } |
| |
| template<typename ColorType, typename ConsumerForLightness, typename ConsumerForChroma, typename ConsumerForHue, typename ConsumerForAlpha> |
| static Color parseLCHParameters(CSSParserTokenRange& args, ConsumerForLightness&& lightnessConsumer, ConsumerForChroma&& chromaConsumer, ConsumerForHue&& hueConsumer, ConsumerForAlpha&& alphaConsumer) |
| { |
| auto lightness = lightnessConsumer(args); |
| if (!lightness) |
| return { }; |
| |
| auto chroma = chromaConsumer(args); |
| if (!chroma) |
| return { }; |
| |
| auto hue = hueConsumer(args); |
| if (!hue) |
| return { }; |
| |
| auto alpha = alphaConsumer(args); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedLightness = std::max(0.0, *lightness); |
| auto normalizedChroma = std::max(0.0, *chroma); |
| auto normalizedHue = normalizeHue(*hue); |
| |
| return ColorType { static_cast<float>(normalizedLightness), static_cast<float>(normalizedChroma), static_cast<float>(normalizedHue), static_cast<float>(*alpha) }; |
| } |
| |
| template<typename ColorType> |
| static Color parseRelativeLCHParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| auto originColorAsLCH = originColor.toColorTypeLossy<ColorType>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueL, CSSUnitType::CSS_PERCENTAGE, originColorAsLCH.lightness }, |
| { CSSValueC, CSSUnitType::CSS_NUMBER, originColorAsLCH.chroma }, |
| { CSSValueH, CSSUnitType::CSS_DEG, originColorAsLCH.hue }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsLCH.alpha * 100.0 } |
| }; |
| |
| auto lightnessConsumer = [&symbolTable](auto& args) { return consumePercentAllowingSymbolTableIdent(args, symbolTable); }; |
| auto chromaConsumer = [&symbolTable](auto& args) { return consumeNumberAllowingSymbolTableIdent(args, symbolTable); }; |
| auto hueConsumer = [&symbolTable, &context](auto& args) { return consumeAngleRawOrNumberRawAllowingSymbolTableIdent(args, symbolTable, context.mode); }; |
| auto alphaConsumer = [&symbolTable](auto& args) { return consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); }; |
| |
| return parseLCHParameters<ColorType>(args, WTFMove(lightnessConsumer), WTFMove(chromaConsumer), WTFMove(hueConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| template<typename ColorType> |
| static Color parseNonRelativeLCHParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| auto lightnessConsumer = [](auto& args) { return consumePercentRaw(args); }; |
| auto chromaConsumer = [](auto& args) { return consumeNumberRaw(args); }; |
| auto hueConsumer = [&context](auto& args) { return consumeAngleRawOrNumberRaw(args, context.mode); }; |
| auto alphaConsumer = [](auto& args) { return consumeOptionalAlpha(args); }; |
| |
| return parseLCHParameters<ColorType>(args, WTFMove(lightnessConsumer), WTFMove(chromaConsumer), WTFMove(hueConsumer), WTFMove(alphaConsumer)); |
| } |
| |
| template<typename ColorType> |
| static Color parseLCHParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueLch || range.peek().functionId() == CSSValueOklch); |
| |
| if (!context.cssColor4) |
| return { }; |
| |
| auto args = consumeFunction(range); |
| |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeLCHParameters<ColorType>(args, context); |
| return parseNonRelativeLCHParameters<ColorType>(args, context); |
| } |
| |
| template<typename ColorType, typename ConsumerForRGB, typename ConsumerForAlpha> |
| static Color parseColorFunctionForRGBTypes(CSSParserTokenRange& args, ConsumerForRGB&& rgbConsumer, ConsumerForAlpha&& alphaConsumer) |
| { |
| double channels[3] = { 0, 0, 0 }; |
| for (auto& channel : channels) { |
| auto value = rgbConsumer(args); |
| if (!value) |
| break; |
| channel = *value; |
| } |
| |
| auto alpha = alphaConsumer(args); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| auto normalizedRed = std::clamp(channels[0], 0.0, 1.0); |
| auto normalizedGreen = std::clamp(channels[1], 0.0, 1.0); |
| auto normalizedBlue = std::clamp(channels[2], 0.0, 1.0); |
| |
| return { ColorType { static_cast<float>(normalizedRed), static_cast<float>(normalizedGreen), static_cast<float>(normalizedBlue), static_cast<float>(*alpha) }, Color::Flags::UseColorFunctionSerialization }; |
| } |
| |
| template<typename ColorType> static Color parseRelativeColorFunctionForRGBTypes(CSSParserTokenRange& args, Color originColor, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueA98Rgb || args.peek().id() == CSSValueDisplayP3 || args.peek().id() == CSSValueProphotoRgb || args.peek().id() == CSSValueRec2020 || args.peek().id() == CSSValueSRGB || args.peek().id() == CSSValueSrgbLinear); |
| |
| // Support sRGB and Display-P3 regardless of the setting as we have shipped support for them for a while. |
| if (!context.cssColor4 && (args.peek().id() == CSSValueA98Rgb || args.peek().id() == CSSValueProphotoRgb || args.peek().id() == CSSValueRec2020 || args.peek().id() == CSSValueSrgbLinear)) |
| return { }; |
| |
| consumeIdentRaw(args); |
| |
| auto originColorAsColorType = originColor.toColorTypeLossy<ColorType>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueR, CSSUnitType::CSS_PERCENTAGE, originColorAsColorType.red * 100.0 }, |
| { CSSValueG, CSSUnitType::CSS_PERCENTAGE, originColorAsColorType.green * 100.0 }, |
| { CSSValueB, CSSUnitType::CSS_PERCENTAGE, originColorAsColorType.blue * 100.0 }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsColorType.alpha * 100.0 } |
| }; |
| |
| auto consumeRGB = [&symbolTable](auto& args) { return consumeNumberRawOrPercentDividedBy100RawAllowingSymbolTableIdent(args, symbolTable, ValueRange::All); }; |
| auto consumeAlpha = [&symbolTable](auto& args) { return consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); }; |
| |
| return parseColorFunctionForRGBTypes<ColorType>(args, WTFMove(consumeRGB), WTFMove(consumeAlpha)); |
| } |
| |
| template<typename ColorType> static Color parseColorFunctionForRGBTypes(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueA98Rgb || args.peek().id() == CSSValueDisplayP3 || args.peek().id() == CSSValueProphotoRgb || args.peek().id() == CSSValueRec2020 || args.peek().id() == CSSValueSRGB || args.peek().id() == CSSValueSrgbLinear); |
| |
| // Support sRGB and Display-P3 regardless of the setting as we have shipped support for them for a while. |
| if (!context.cssColor4 && (args.peek().id() == CSSValueA98Rgb || args.peek().id() == CSSValueProphotoRgb || args.peek().id() == CSSValueRec2020 || args.peek().id() == CSSValueSrgbLinear)) |
| return { }; |
| |
| consumeIdentRaw(args); |
| |
| auto consumeRGB = [](auto& args) { return consumeNumberRawOrPercentDividedBy100Raw(args); }; |
| auto consumeAlpha = [](auto& args) { return consumeOptionalAlpha(args); }; |
| |
| return parseColorFunctionForRGBTypes<ColorType>(args, WTFMove(consumeRGB), WTFMove(consumeAlpha)); |
| } |
| |
| template<typename ColorType, typename ConsumerForXYZ, typename ConsumerForAlpha> |
| static Color parseColorFunctionForXYZTypes(CSSParserTokenRange& args, ConsumerForXYZ&& xyzConsumer, ConsumerForAlpha&& alphaConsumer) |
| { |
| double channels[3] = { 0, 0, 0 }; |
| for (auto& channel : channels) { |
| auto value = xyzConsumer(args); |
| if (!value) |
| break; |
| channel = *value; |
| } |
| |
| auto alpha = alphaConsumer(args); |
| if (!alpha) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| return { ColorType { static_cast<float>(channels[0]), static_cast<float>(channels[1]), static_cast<float>(channels[2]), static_cast<float>(*alpha) }, Color::Flags::UseColorFunctionSerialization }; |
| } |
| |
| template<typename ColorType> static Color parseRelativeColorFunctionForXYZTypes(CSSParserTokenRange& args, Color originColor, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueXyz || args.peek().id() == CSSValueXyzD50 || args.peek().id() == CSSValueXyzD65); |
| |
| if (!context.cssColor4) |
| return { }; |
| |
| consumeIdentRaw(args); |
| |
| auto originColorAsXYZ = originColor.toColorTypeLossy<ColorType>(); |
| |
| CSSCalcSymbolTable symbolTable { |
| { CSSValueX, CSSUnitType::CSS_NUMBER, originColorAsXYZ.x }, |
| { CSSValueY, CSSUnitType::CSS_NUMBER, originColorAsXYZ.y }, |
| { CSSValueZ, CSSUnitType::CSS_NUMBER, originColorAsXYZ.z }, |
| { CSSValueAlpha, CSSUnitType::CSS_PERCENTAGE, originColorAsXYZ.alpha * 100.0 } |
| }; |
| |
| auto consumeXYZ = [&symbolTable](auto& args) { return consumeNumberAllowingSymbolTableIdent(args, symbolTable); }; |
| auto consumeAlpha = [&symbolTable](auto& args) { return consumeOptionalAlphaAllowingSymbolTableIdent(args, symbolTable); }; |
| |
| return parseColorFunctionForXYZTypes<ColorType>(args, WTFMove(consumeXYZ), WTFMove(consumeAlpha)); |
| } |
| |
| template<typename ColorType> static Color parseColorFunctionForXYZTypes(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueXyz || args.peek().id() == CSSValueXyzD50 || args.peek().id() == CSSValueXyzD65); |
| |
| if (!context.cssColor4) |
| return { }; |
| |
| consumeIdentRaw(args); |
| |
| auto consumeXYZ = [](auto& args) { return consumeNumberRaw(args); }; |
| auto consumeAlpha = [](auto& args) { return consumeOptionalAlpha(args); }; |
| |
| return parseColorFunctionForXYZTypes<ColorType>(args, WTFMove(consumeXYZ), WTFMove(consumeAlpha)); |
| } |
| |
| static Color parseRelativeColorFunctionParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ASSERT(args.peek().id() == CSSValueFrom); |
| consumeIdentRaw(args); |
| |
| auto originColor = consumeOriginColor(args, context); |
| if (!originColor.isValid()) |
| return { }; |
| |
| switch (args.peek().id()) { |
| case CSSValueA98Rgb: |
| return parseRelativeColorFunctionForRGBTypes<A98RGB<float>>(args, WTFMove(originColor), context); |
| case CSSValueDisplayP3: |
| return parseRelativeColorFunctionForRGBTypes<DisplayP3<float>>(args, WTFMove(originColor), context); |
| case CSSValueProphotoRgb: |
| return parseRelativeColorFunctionForRGBTypes<ProPhotoRGB<float>>(args, WTFMove(originColor), context); |
| case CSSValueRec2020: |
| return parseRelativeColorFunctionForRGBTypes<Rec2020<float>>(args, WTFMove(originColor), context); |
| case CSSValueSRGB: |
| return parseRelativeColorFunctionForRGBTypes<SRGBA<float>>(args, WTFMove(originColor), context); |
| case CSSValueSrgbLinear: |
| return parseRelativeColorFunctionForRGBTypes<LinearSRGBA<float>>(args, WTFMove(originColor), context); |
| case CSSValueXyzD50: |
| return parseRelativeColorFunctionForXYZTypes<XYZA<float, WhitePoint::D50>>(args, WTFMove(originColor), context); |
| case CSSValueXyz: |
| case CSSValueXyzD65: |
| return parseRelativeColorFunctionForXYZTypes<XYZA<float, WhitePoint::D65>>(args, WTFMove(originColor), context); |
| default: |
| return { }; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return { }; |
| } |
| |
| static Color parseNonRelativeColorFunctionParameters(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| switch (args.peek().id()) { |
| case CSSValueA98Rgb: |
| return parseColorFunctionForRGBTypes<A98RGB<float>>(args, context); |
| case CSSValueDisplayP3: |
| return parseColorFunctionForRGBTypes<DisplayP3<float>>(args, context); |
| case CSSValueProphotoRgb: |
| return parseColorFunctionForRGBTypes<ProPhotoRGB<float>>(args, context); |
| case CSSValueRec2020: |
| return parseColorFunctionForRGBTypes<Rec2020<float>>(args, context); |
| case CSSValueSRGB: |
| return parseColorFunctionForRGBTypes<SRGBA<float>>(args, context); |
| case CSSValueSrgbLinear: |
| return parseColorFunctionForRGBTypes<LinearSRGBA<float>>(args, context); |
| case CSSValueXyzD50: |
| return parseColorFunctionForXYZTypes<XYZA<float, WhitePoint::D50>>(args, context); |
| case CSSValueXyz: |
| case CSSValueXyzD65: |
| return parseColorFunctionForXYZTypes<XYZA<float, WhitePoint::D65>>(args, context); |
| default: |
| return { }; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return { }; |
| } |
| |
| static Color parseColorFunctionParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueColor); |
| auto args = consumeFunction(range); |
| |
| auto color = [&] { |
| if (context.relativeColorSyntaxEnabled && args.peek().id() == CSSValueFrom) |
| return parseRelativeColorFunctionParameters(args, context); |
| return parseNonRelativeColorFunctionParameters(args, context); |
| }(); |
| |
| ASSERT(!color.isValid() || color.usesColorFunctionSerialization()); |
| return color; |
| } |
| |
| static Color selectFirstColorThatMeetsOrExceedsTargetContrast(const Color& originBackgroundColor, Vector<Color>&& colorsToCompareAgainst, double targetContrast) |
| { |
| auto originBackgroundColorLuminance = originBackgroundColor.luminance(); |
| |
| for (auto& color : colorsToCompareAgainst) { |
| if (contrastRatio(originBackgroundColorLuminance, color.luminance()) >= targetContrast) |
| return WTFMove(color); |
| } |
| |
| // If there is a target contrast, and the end of the list is reached without meeting that target, |
| // either white or black is returned, whichever has the higher contrast. |
| auto contrastWithWhite = contrastRatio(originBackgroundColorLuminance, 1.0); |
| auto contrastWithBlack = contrastRatio(originBackgroundColorLuminance, 0.0); |
| return contrastWithWhite > contrastWithBlack ? Color::white : Color::black; |
| } |
| |
| static Color selectFirstColorWithHighestContrast(const Color& originBackgroundColor, Vector<Color>&& colorsToCompareAgainst) |
| { |
| auto originBackgroundColorLuminance = originBackgroundColor.luminance(); |
| |
| auto* colorWithGreatestContrast = &colorsToCompareAgainst[0]; |
| double greatestContrastSoFar = 0; |
| for (auto& color : colorsToCompareAgainst) { |
| auto contrast = contrastRatio(originBackgroundColorLuminance, color.luminance()); |
| if (contrast > greatestContrastSoFar) { |
| greatestContrastSoFar = contrast; |
| colorWithGreatestContrast = &color; |
| } |
| } |
| |
| return WTFMove(*colorWithGreatestContrast); |
| } |
| |
| static Color parseColorContrastFunctionParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueColorContrast); |
| |
| if (!context.colorContrastEnabled) |
| return { }; |
| |
| auto args = consumeFunction(range); |
| |
| auto originBackgroundColor = consumeOriginColor(args, context); |
| if (!originBackgroundColor.isValid()) |
| return { }; |
| |
| if (!consumeIdentRaw<CSSValueVs>(args)) |
| return { }; |
| |
| Vector<Color> colorsToCompareAgainst; |
| bool consumedTo = false; |
| do { |
| auto colorToCompareAgainst = consumeOriginColor(args, context); |
| if (!colorToCompareAgainst.isValid()) |
| return { }; |
| |
| colorsToCompareAgainst.append(WTFMove(colorToCompareAgainst)); |
| |
| if (consumeIdentRaw<CSSValueTo>(args)) { |
| consumedTo = true; |
| break; |
| } |
| } while (consumeCommaIncludingWhitespace(args)); |
| |
| if (colorsToCompareAgainst.size() == 1) |
| return { }; |
| |
| if (consumedTo) { |
| auto targetContrast = [&] () -> std::optional<double> { |
| if (args.peek().type() == IdentToken) { |
| static constexpr std::pair<CSSValueID, double> targetContrastMappings[] { |
| { CSSValueAA, 4.5 }, |
| { CSSValueAALarge, 3.0 }, |
| { CSSValueAAA, 7.0 }, |
| { CSSValueAAALarge, 4.5 }, |
| }; |
| static constexpr SortedArrayMap targetContrastMap { targetContrastMappings }; |
| auto value = targetContrastMap.tryGet(args.consumeIncludingWhitespace().id()); |
| return value ? std::make_optional(*value) : std::nullopt; |
| } |
| return consumeNumberRaw(args); |
| }(); |
| |
| if (!targetContrast) |
| return { }; |
| |
| // When a target constast is specified, we select "the first color color to meet or exceed the target contrast." |
| return selectFirstColorThatMeetsOrExceedsTargetContrast(originBackgroundColor, WTFMove(colorsToCompareAgainst), *targetContrast); |
| } |
| |
| // When a target constast is NOT specified, we select "the first color with the highest contrast to the single color." |
| return selectFirstColorWithHighestContrast(originBackgroundColor, WTFMove(colorsToCompareAgainst)); |
| } |
| |
| enum class ColorMixColorSpace { |
| Hsl, |
| Hwb, |
| Lab, |
| Lch, |
| Oklab, |
| Oklch, |
| Srgb, |
| XyzD50, |
| XyzD65 |
| }; |
| |
| static std::optional<ColorMixColorSpace> consumeColorMixColorSpaceAndComma(CSSParserTokenRange& args) |
| { |
| auto consumeIdentAndComma = [](CSSParserTokenRange& args, ColorMixColorSpace colorSpace) -> std::optional<ColorMixColorSpace> { |
| consumeIdentRaw(args); |
| if (!consumeCommaIncludingWhitespace(args)) |
| return std::nullopt; |
| return colorSpace; |
| }; |
| |
| switch (args.peek().id()) { |
| case CSSValueHsl: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Hsl); |
| case CSSValueHwb: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Hwb); |
| case CSSValueLab: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Lab); |
| case CSSValueLch: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Lch); |
| case CSSValueOklab: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Oklab); |
| case CSSValueOklch: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Oklch); |
| case CSSValueSRGB: |
| return consumeIdentAndComma(args, ColorMixColorSpace::Srgb); |
| case CSSValueXyzD50: |
| return consumeIdentAndComma(args, ColorMixColorSpace::XyzD50); |
| case CSSValueXyz: |
| case CSSValueXyzD65: |
| return consumeIdentAndComma(args, ColorMixColorSpace::XyzD65); |
| default: |
| return std::nullopt; |
| } |
| } |
| |
| struct ColorMixComponent { |
| Color color; |
| std::optional<double> percentage; |
| }; |
| |
| static std::optional<ColorMixComponent> consumeColorMixComponent(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| ColorMixComponent result; |
| |
| if (auto percentage = consumePercentRaw(args)) |
| result.percentage = percentage; |
| |
| result.color = consumeOriginColor(args, context); |
| if (!result.color.isValid()) |
| return std::nullopt; |
| |
| if (!result.percentage) { |
| if (auto percentage = consumePercentRaw(args)) |
| result.percentage = percentage; |
| } |
| |
| return result; |
| } |
| |
| struct ColorMixPercentages { |
| double p1; |
| double p2; |
| }; |
| |
| static ColorMixPercentages normalizedMixPercentages(const ColorMixComponent& mixComponents1, const ColorMixComponent& mixComponents2) |
| { |
| // The percentages are normalized as follows: |
| |
| // 1. Let p1 be the first percentage and p2 the second one. |
| |
| // 2. If both percentages are omitted, they each default to 50% (an equal mix of the two colors). |
| if (!mixComponents1.percentage && !mixComponents2.percentage) |
| return { 50.0, 50.0 }; |
| |
| ColorMixPercentages result; |
| |
| if (!mixComponents2.percentage) { |
| // 3. Otherwise, if p2 is omitted, it becomes 100% - p1 |
| result.p1 = *mixComponents1.percentage; |
| result.p2 = 100.0 - result.p1; |
| } else if (!mixComponents1.percentage) { |
| // 4. Otherwise, if p1 is omitted, it becomes 100% - p2 |
| result.p2 = *mixComponents2.percentage; |
| result.p1 = 100.0 - result.p2; |
| } else { |
| result.p1 = *mixComponents1.percentage; |
| result.p2 = *mixComponents2.percentage; |
| } |
| |
| auto sum = result.p1 + result.p2; |
| |
| // 5. If the percentages sum to zero do something, tbd. (FIXME: We just use 50 / 50 for this case for now). |
| if (sum == 0) |
| return { 50.0, 50.0 }; |
| |
| if (sum != 100.0) { |
| // 6. Otherwise, if both are provided but do not add up to 100%, they are scaled accordingly so that they |
| // add up to 100%. This means that p1 becomes p1 / (p1 + p2) and p2 becomes p2 / (p1 + p2). |
| result.p1 *= 100.0 / sum; |
| result.p2 *= 100.0 / sum; |
| } |
| |
| return result; |
| } |
| |
| // Normalization is special cased for HWBA, which needs to normalize the whiteness and blackness components and convert to sRGB |
| // and HSLA, which just needs to be converted to sRGB. All other color types can go through this non-specialized case. |
| |
| template<typename ColorType> inline Color makeColorTypeByNormalizingComponentsAfterMix(const ColorComponents<float, 4>& colorComponents) |
| { |
| return makeFromComponents<ColorType>(colorComponents); |
| } |
| |
| template<> inline Color makeColorTypeByNormalizingComponentsAfterMix<HWBA<float>>(const ColorComponents<float, 4>& colorComponents) |
| { |
| auto [hue, whiteness, blackness, alpha] = colorComponents; |
| auto [normalizedWhitness, normalizedBlackness] = normalizeWhitenessBlackness(whiteness, blackness); |
| |
| return convertColor<SRGBA<uint8_t>>(HWBA<float> { hue, normalizedWhitness, normalizedBlackness, alpha }); |
| } |
| |
| template<> inline Color makeColorTypeByNormalizingComponentsAfterMix<HSLA<float>>(const ColorComponents<float, 4>& colorComponents) |
| { |
| return convertColor<SRGBA<uint8_t>>(makeFromComponents<HSLA<float>>(colorComponents)); |
| } |
| |
| template<size_t I, typename ComponentType> static void fixupHueComponentsPriorToMix(ColorComponents<ComponentType, 4>& colorComponents1, ColorComponents<ComponentType, 4>& colorComponents2) |
| { |
| auto normalizeAnglesUsingShorterAlgorithm = [] (auto theta1, auto theta2) -> std::pair<ComponentType, ComponentType> { |
| // https://drafts.csswg.org/css-color-4/#hue-shorter |
| auto difference = theta2 - theta1; |
| if (difference > 180.0) |
| return { theta1 + 360.0, theta2 }; |
| if (difference < -180.0) |
| return { theta1, theta2 + 360.0 }; |
| return { theta1, theta2 }; |
| }; |
| |
| // As no other interpolation type was specified, all angles should be normalized to use the "shorter" algorithm. |
| auto [theta1, theta2] = normalizeAnglesUsingShorterAlgorithm(colorComponents1[I], colorComponents2[I]); |
| colorComponents1[I] = theta1; |
| colorComponents2[I] = theta2; |
| } |
| |
| template<typename ColorType> static Color mixColorComponentsInColorSpace(ColorMixPercentages mixPercentages, const Color& color1, const Color& color2) |
| { |
| auto colorComponents1 = asColorComponents(color1.template toColorTypeLossy<ColorType>()); |
| auto colorComponents2 = asColorComponents(color2.template toColorTypeLossy<ColorType>()); |
| |
| // Perform fixups on any hue/angle components. |
| constexpr auto componentInfo = ColorType::Model::componentInfo; |
| if constexpr (componentInfo[0].type == ColorComponentType::Angle) |
| fixupHueComponentsPriorToMix<0>(colorComponents1, colorComponents2); |
| if constexpr (componentInfo[1].type == ColorComponentType::Angle) |
| fixupHueComponentsPriorToMix<1>(colorComponents1, colorComponents2); |
| if constexpr (componentInfo[2].type == ColorComponentType::Angle) |
| fixupHueComponentsPriorToMix<2>(colorComponents1, colorComponents2); |
| |
| auto colorComponentsMixed = mapColorComponents([&] (auto componentFromColor1, auto componentFromColor2) -> float { |
| return (componentFromColor1 * mixPercentages.p1 / 100.0) + (componentFromColor2 * mixPercentages.p2 / 100.0); |
| }, colorComponents1, colorComponents2); |
| |
| return makeColorTypeByNormalizingComponentsAfterMix<ColorType>(colorComponentsMixed); |
| } |
| |
| static Color mixColorComponents(ColorMixColorSpace colorSpace, const ColorMixComponent& mixComponents1, const ColorMixComponent& mixComponents2) |
| { |
| auto mixPercentages = normalizedMixPercentages(mixComponents1, mixComponents2); |
| |
| switch (colorSpace) { |
| case ColorMixColorSpace::Hsl: |
| return mixColorComponentsInColorSpace<HSLA<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Hwb: |
| return mixColorComponentsInColorSpace<HWBA<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Lab: |
| return mixColorComponentsInColorSpace<Lab<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Lch: |
| return mixColorComponentsInColorSpace<LCHA<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Oklab: |
| return mixColorComponentsInColorSpace<OKLab<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Oklch: |
| return mixColorComponentsInColorSpace<OKLCHA<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::Srgb: |
| return mixColorComponentsInColorSpace<SRGBA<float>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::XyzD50: |
| return mixColorComponentsInColorSpace<XYZA<float, WhitePoint::D50>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| case ColorMixColorSpace::XyzD65: |
| return mixColorComponentsInColorSpace<XYZA<float, WhitePoint::D65>>(mixPercentages, mixComponents1.color, mixComponents2.color); |
| } |
| |
| RELEASE_ASSERT_NOT_REACHED(); |
| } |
| |
| static Color parseColorMixFunctionParameters(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| ASSERT(range.peek().functionId() == CSSValueColorMix); |
| |
| if (!context.colorMixEnabled) |
| return { }; |
| |
| auto args = consumeFunction(range); |
| |
| if (!consumeIdentRaw<CSSValueIn>(args)) |
| return { }; |
| |
| auto colorSpace = consumeColorMixColorSpaceAndComma(args); |
| if (!colorSpace) |
| return { }; |
| |
| auto mixComponent1 = consumeColorMixComponent(args, context); |
| if (!mixComponent1) |
| return { }; |
| |
| if (!consumeCommaIncludingWhitespace(args)) |
| return { }; |
| |
| auto mixComponent2 = consumeColorMixComponent(args, context); |
| if (!mixComponent2) |
| return { }; |
| |
| if (!args.atEnd()) |
| return { }; |
| |
| return mixColorComponents(*colorSpace, *mixComponent1, *mixComponent2); |
| } |
| |
| static std::optional<SRGBA<uint8_t>> parseHexColor(CSSParserTokenRange& range, bool acceptQuirkyColors) |
| { |
| String string; |
| StringView view; |
| auto& token = range.peek(); |
| if (token.type() == HashToken) |
| view = token.value(); |
| else { |
| if (!acceptQuirkyColors) |
| return std::nullopt; |
| if (token.type() == IdentToken) { |
| view = token.value(); // e.g. FF0000 |
| if (view.length() != 3 && view.length() != 6) |
| return std::nullopt; |
| } else if (token.type() == NumberToken || token.type() == DimensionToken) { |
| if (token.numericValueType() != IntegerValueType) |
| return std::nullopt; |
| auto numericValue = token.numericValue(); |
| if (!(numericValue >= 0 && numericValue < 1000000)) |
| return std::nullopt; |
| auto integerValue = static_cast<int>(token.numericValue()); |
| if (token.type() == NumberToken) |
| string = String::number(integerValue); // e.g. 112233 |
| else |
| string = makeString(integerValue, token.unitString()); // e.g. 0001FF |
| if (string.length() < 6) |
| string = makeString(&"000000"[string.length()], string); |
| |
| if (string.length() != 3 && string.length() != 6) |
| return std::nullopt; |
| view = string; |
| } else |
| return std::nullopt; |
| } |
| auto result = CSSParser::parseHexColor(view); |
| if (!result) |
| return std::nullopt; |
| range.consumeIncludingWhitespace(); |
| return *result; |
| } |
| |
| static Color parseColorFunction(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| CSSParserTokenRange colorRange = range; |
| CSSValueID functionId = range.peek().functionId(); |
| Color color; |
| switch (functionId) { |
| case CSSValueRgb: |
| color = parseRGBParameters<RGBFunctionMode::RGB>(colorRange, context); |
| break; |
| case CSSValueRgba: |
| color = parseRGBParameters<RGBFunctionMode::RGBA>(colorRange, context); |
| break; |
| case CSSValueHsl: |
| color = parseHSLParameters<HSLFunctionMode::HSL>(colorRange, context); |
| break; |
| case CSSValueHsla: |
| color = parseHSLParameters<HSLFunctionMode::HSLA>(colorRange, context); |
| break; |
| case CSSValueHwb: |
| color = parseHWBParameters(colorRange, context); |
| break; |
| case CSSValueLab: |
| color = parseLabParameters<Lab<float>>(colorRange, context); |
| break; |
| case CSSValueLch: |
| color = parseLCHParameters<LCHA<float>>(colorRange, context); |
| break; |
| case CSSValueOklab: |
| color = parseLabParameters<OKLab<float>>(colorRange, context); |
| break; |
| case CSSValueOklch: |
| color = parseLCHParameters<OKLCHA<float>>(colorRange, context); |
| break; |
| case CSSValueColor: |
| color = parseColorFunctionParameters(colorRange, context); |
| break; |
| case CSSValueColorContrast: |
| color = parseColorContrastFunctionParameters(colorRange, context); |
| break; |
| case CSSValueColorMix: |
| color = parseColorMixFunctionParameters(colorRange, context); |
| break; |
| default: |
| return { }; |
| } |
| if (color.isValid()) |
| range = colorRange; |
| return color; |
| } |
| |
| Color consumeColorWorkerSafe(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| Color result; |
| auto keyword = range.peek().id(); |
| if (StyleColor::isColorKeyword(keyword)) { |
| // FIXME: Need a worker-safe way to compute the system colors. |
| // For now, we detect the system color, but then intentionally fail parsing. |
| if (StyleColor::isSystemColorKeyword(keyword)) |
| return { }; |
| if (!isValueAllowedInMode(keyword, context.mode)) |
| return { }; |
| result = StyleColor::colorFromKeyword(keyword, { }); |
| range.consumeIncludingWhitespace(); |
| } |
| |
| if (auto parsedColor = parseHexColor(range, false)) |
| result = *parsedColor; |
| else |
| result = parseColorFunction(range, context); |
| |
| if (!range.atEnd()) |
| return { }; |
| |
| return result; |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeColor(CSSParserTokenRange& range, const CSSParserContext& context, bool acceptQuirkyColors, OptionSet<StyleColor::CSSColorType> allowedColorTypes) |
| { |
| auto keyword = range.peek().id(); |
| if (StyleColor::isColorKeyword(keyword, allowedColorTypes)) { |
| if (!isValueAllowedInMode(keyword, context.mode)) |
| return nullptr; |
| return consumeIdent(range); |
| } |
| Color color; |
| if (auto parsedColor = parseHexColor(range, acceptQuirkyColors)) |
| color = *parsedColor; |
| else { |
| color = parseColorFunction(range, context); |
| if (!color.isValid()) |
| return nullptr; |
| } |
| return CSSValuePool::singleton().createValue(color); |
| } |
| |
| static RefPtr<CSSPrimitiveValue> consumePositionComponent(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless) |
| { |
| if (range.peek().type() == IdentToken) |
| return consumeIdent<CSSValueLeft, CSSValueTop, CSSValueBottom, CSSValueRight, CSSValueCenter>(range); |
| return consumeLengthOrPercent(range, parserMode, ValueRange::All, unitless); |
| } |
| |
| static bool isHorizontalPositionKeywordOnly(const CSSPrimitiveValue& value) |
| { |
| return value.isValueID() && (value.valueID() == CSSValueLeft || value.valueID() == CSSValueRight); |
| } |
| |
| static bool isVerticalPositionKeywordOnly(const CSSPrimitiveValue& value) |
| { |
| return value.isValueID() && (value.valueID() == CSSValueTop || value.valueID() == CSSValueBottom); |
| } |
| |
| static PositionCoordinates positionFromOneValue(CSSPrimitiveValue& value) |
| { |
| bool valueAppliesToYAxisOnly = isVerticalPositionKeywordOnly(value); |
| if (valueAppliesToYAxisOnly) |
| return { CSSPrimitiveValue::createIdentifier(CSSValueCenter), value }; |
| return { value, CSSPrimitiveValue::createIdentifier(CSSValueCenter) }; |
| } |
| |
| static std::optional<PositionCoordinates> positionFromTwoValues(CSSPrimitiveValue& value1, CSSPrimitiveValue& value2) |
| { |
| bool mustOrderAsXY = isHorizontalPositionKeywordOnly(value1) || isVerticalPositionKeywordOnly(value2) || !value1.isValueID() || !value2.isValueID(); |
| bool mustOrderAsYX = isVerticalPositionKeywordOnly(value1) || isHorizontalPositionKeywordOnly(value2); |
| if (mustOrderAsXY && mustOrderAsYX) |
| return std::nullopt; |
| if (mustOrderAsYX) |
| return PositionCoordinates { value2, value1 }; |
| return PositionCoordinates { value1, value2 }; |
| } |
| |
| namespace CSSPropertyParserHelpersInternal { |
| template<typename... Args> |
| static Ref<CSSPrimitiveValue> createPrimitiveValuePair(Args&&... args) |
| { |
| return CSSValuePool::singleton().createValue(Pair::create(std::forward<Args>(args)...)); |
| } |
| } |
| |
| // https://drafts.csswg.org/css-backgrounds-3/#propdef-background-position |
| // background-position has special parsing rules, allowing a 3-value syntax: |
| // <bg-position> = [ left | center | right | top | bottom | <length-percentage> ] |
| // | |
| // [ left | center | right | <length-percentage> ] |
| // [ top | center | bottom | <length-percentage> ] |
| // | |
| // [ center | [ left | right ] <length-percentage>? ] && |
| // [ center | [ top | bottom ] <length-percentage>? ] |
| // |
| static std::optional<PositionCoordinates> backgroundPositionFromThreeValues(const std::array<CSSPrimitiveValue*, 5>& values) |
| { |
| RefPtr<CSSPrimitiveValue> resultX; |
| RefPtr<CSSPrimitiveValue> resultY; |
| |
| CSSPrimitiveValue* center = nullptr; |
| for (int i = 0; values[i]; i++) { |
| CSSPrimitiveValue* currentValue = values[i]; |
| if (!currentValue->isValueID()) |
| return std::nullopt; |
| |
| CSSValueID id = currentValue->valueID(); |
| if (id == CSSValueCenter) { |
| if (center) |
| return std::nullopt; |
| center = currentValue; |
| continue; |
| } |
| |
| RefPtr<CSSPrimitiveValue> result; |
| if (values[i + 1] && !values[i + 1]->isValueID()) |
| result = CSSPropertyParserHelpersInternal::createPrimitiveValuePair(currentValue, values[++i]); |
| else |
| result = currentValue; |
| |
| if (id == CSSValueLeft || id == CSSValueRight) { |
| if (resultX) |
| return std::nullopt; |
| resultX = result; |
| } else { |
| ASSERT(id == CSSValueTop || id == CSSValueBottom); |
| if (resultY) |
| return std::nullopt; |
| resultY = result; |
| } |
| } |
| |
| if (center) { |
| ASSERT(resultX || resultY); |
| if (resultX && resultY) |
| return std::nullopt; |
| if (!resultX) |
| resultX = center; |
| else |
| resultY = center; |
| } |
| |
| ASSERT(resultX && resultY); |
| return PositionCoordinates { resultX.releaseNonNull(), resultY.releaseNonNull() }; |
| } |
| |
| // https://drafts.csswg.org/css-values-4/#typedef-position |
| // <position> = [ |
| // [ left | center | right ] || [ top | center | bottom ] |
| // | |
| // [ left | center | right | <length-percentage> ] |
| // [ top | center | bottom | <length-percentage> ]? |
| // | |
| // [ [ left | right ] <length-percentage> ] && |
| // [ [ top | bottom ] <length-percentage> ] |
| // |
| static std::optional<PositionCoordinates> positionFromFourValues(const std::array<CSSPrimitiveValue*, 5>& values) |
| { |
| RefPtr<CSSPrimitiveValue> resultX; |
| RefPtr<CSSPrimitiveValue> resultY; |
| |
| for (int i = 0; values[i]; i++) { |
| CSSPrimitiveValue* currentValue = values[i]; |
| if (!currentValue->isValueID()) |
| return std::nullopt; |
| |
| CSSValueID id = currentValue->valueID(); |
| if (id == CSSValueCenter) |
| return std::nullopt; |
| |
| RefPtr<CSSPrimitiveValue> result; |
| if (values[i + 1] && !values[i + 1]->isValueID()) |
| result = CSSPropertyParserHelpersInternal::createPrimitiveValuePair(currentValue, values[++i]); |
| else |
| result = currentValue; |
| |
| if (id == CSSValueLeft || id == CSSValueRight) { |
| if (resultX) |
| return std::nullopt; |
| resultX = result; |
| } else { |
| ASSERT(id == CSSValueTop || id == CSSValueBottom); |
| if (resultY) |
| return std::nullopt; |
| resultY = result; |
| } |
| } |
| |
| ASSERT(resultX && resultY); |
| return PositionCoordinates { resultX.releaseNonNull(), resultY.releaseNonNull() }; |
| } |
| |
| // FIXME: This may consume from the range upon failure. The background |
| // shorthand works around it, but we should just fix it here. |
| std::optional<PositionCoordinates> consumePositionCoordinates(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless, PositionSyntax positionSyntax) |
| { |
| auto value1 = consumePositionComponent(range, parserMode, unitless); |
| if (!value1) |
| return std::nullopt; |
| |
| auto value2 = consumePositionComponent(range, parserMode, unitless); |
| if (!value2) |
| return positionFromOneValue(*value1); |
| |
| auto value3 = consumePositionComponent(range, parserMode, unitless); |
| if (!value3) |
| return positionFromTwoValues(*value1, *value2); |
| |
| auto value4 = consumePositionComponent(range, parserMode, unitless); |
| |
| std::array<CSSPrimitiveValue*, 5> values { |
| value1.get(), |
| value2.get(), |
| value3.get(), |
| value4.get(), |
| nullptr |
| }; |
| |
| if (value4) |
| return positionFromFourValues(values); |
| |
| if (positionSyntax != PositionSyntax::BackgroundPosition) |
| return std::nullopt; |
| |
| return backgroundPositionFromThreeValues(values); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumePosition(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless, PositionSyntax positionSyntax) |
| { |
| if (auto coordinates = consumePositionCoordinates(range, parserMode, unitless, positionSyntax)) |
| return CSSPropertyParserHelpersInternal::createPrimitiveValuePair(WTFMove(coordinates->x), WTFMove(coordinates->y)); |
| return nullptr; |
| } |
| |
| std::optional<PositionCoordinates> consumeOneOrTwoValuedPositionCoordinates(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless) |
| { |
| auto value1 = consumePositionComponent(range, parserMode, unitless); |
| if (!value1) |
| return std::nullopt; |
| auto value2 = consumePositionComponent(range, parserMode, unitless); |
| if (!value2) |
| return positionFromOneValue(*value1); |
| return positionFromTwoValues(*value1, *value2); |
| } |
| |
| RefPtr<CSSPrimitiveValue> consumeSingleAxisPosition(CSSParserTokenRange& range, CSSParserMode parserMode, BoxOrient orientation) |
| { |
| RefPtr<CSSPrimitiveValue> value1; |
| |
| if (range.peek().type() == IdentToken) { |
| switch (orientation) { |
| case BoxOrient::Horizontal: |
| value1 = consumeIdent<CSSValueLeft, CSSValueRight, CSSValueCenter>(range); |
| break; |
| case BoxOrient::Vertical: |
| value1 = consumeIdent<CSSValueTop, CSSValueBottom, CSSValueCenter>(range); |
| break; |
| } |
| if (!value1) |
| return nullptr; |
| |
| if (value1->valueID() == CSSValueCenter) |
| return value1; |
| } |
| |
| auto value2 = consumeLengthOrPercent(range, parserMode, ValueRange::All, UnitlessQuirk::Forbid); |
| if (value1 && value2) |
| return CSSPropertyParserHelpersInternal::createPrimitiveValuePair(WTFMove(value1), WTFMove(value2)); |
| |
| return value1 ? value1 : value2; |
| } |
| |
| // This should go away once we drop support for -webkit-gradient |
| static RefPtr<CSSPrimitiveValue> consumeDeprecatedGradientPoint(CSSParserTokenRange& args, bool horizontal) |
| { |
| if (args.peek().type() == IdentToken) { |
| if ((horizontal && consumeIdent<CSSValueLeft>(args)) || (!horizontal && consumeIdent<CSSValueTop>(args))) |
| return CSSValuePool::singleton().createValue(0., CSSUnitType::CSS_PERCENTAGE); |
| if ((horizontal && consumeIdent<CSSValueRight>(args)) || (!horizontal && consumeIdent<CSSValueBottom>(args))) |
| return CSSValuePool::singleton().createValue(100., CSSUnitType::CSS_PERCENTAGE); |
| if (consumeIdent<CSSValueCenter>(args)) |
| return CSSValuePool::singleton().createValue(50., CSSUnitType::CSS_PERCENTAGE); |
| return nullptr; |
| } |
| RefPtr<CSSPrimitiveValue> result = consumePercent(args, ValueRange::All); |
| if (!result) |
| result = consumeNumber(args, ValueRange::All); |
| return result; |
| } |
| |
| // Used to parse colors for -webkit-gradient(...). |
| static RefPtr<CSSPrimitiveValue> consumeDeprecatedGradientStopColor(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| if (args.peek().id() == CSSValueCurrentcolor) |
| return nullptr; |
| return consumeColor(args, context); |
| } |
| |
| static bool consumeDeprecatedGradientColorStop(CSSParserTokenRange& range, CSSGradientColorStop& stop, const CSSParserContext& context) |
| { |
| CSSValueID id = range.peek().functionId(); |
| if (id != CSSValueFrom && id != CSSValueTo && id != CSSValueColorStop) |
| return false; |
| |
| CSSParserTokenRange args = consumeFunction(range); |
| double position; |
| if (id == CSSValueFrom || id == CSSValueTo) { |
| position = (id == CSSValueFrom) ? 0 : 1; |
| } else { |
| ASSERT(id == CSSValueColorStop); |
| auto value = consumeNumberRawOrPercentDividedBy100Raw(args); |
| if (!value) |
| return false; |
| position = *value; |
| |
| if (!consumeCommaIncludingWhitespace(args)) |
| return false; |
| } |
| |
| stop.position = CSSValuePool::singleton().createValue(position, CSSUnitType::CSS_NUMBER); |
| stop.color = consumeDeprecatedGradientStopColor(args, context); |
| return stop.color && args.atEnd(); |
| } |
| |
| static RefPtr<CSSValue> consumeDeprecatedGradient(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| RefPtr<CSSGradientValue> result; |
| CSSValueID id = args.consumeIncludingWhitespace().id(); |
| bool isDeprecatedRadialGradient = (id == CSSValueRadial); |
| if (isDeprecatedRadialGradient) |
| result = CSSRadialGradientValue::create(NonRepeating, CSSDeprecatedRadialGradient); |
| else if (id == CSSValueLinear) |
| result = CSSLinearGradientValue::create(NonRepeating, CSSDeprecatedLinearGradient); |
| if (!result || !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| |
| auto point = consumeDeprecatedGradientPoint(args, true); |
| if (!point) |
| return nullptr; |
| result->setFirstX(WTFMove(point)); |
| point = consumeDeprecatedGradientPoint(args, false); |
| if (!point) |
| return nullptr; |
| result->setFirstY(WTFMove(point)); |
| |
| if (!consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| |
| // For radial gradients only, we now expect a numeric radius. |
| if (isDeprecatedRadialGradient) { |
| auto radius = consumeNumber(args, ValueRange::NonNegative); |
| if (!radius || !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| downcast<CSSRadialGradientValue>(result.get())->setFirstRadius(WTFMove(radius)); |
| } |
| |
| point = consumeDeprecatedGradientPoint(args, true); |
| if (!point) |
| return nullptr; |
| result->setSecondX(WTFMove(point)); |
| point = consumeDeprecatedGradientPoint(args, false); |
| if (!point) |
| return nullptr; |
| result->setSecondY(WTFMove(point)); |
| |
| // For radial gradients only, we now expect the second radius. |
| if (isDeprecatedRadialGradient) { |
| if (!consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| auto radius = consumeNumber(args, ValueRange::NonNegative); |
| if (!radius) |
| return nullptr; |
| downcast<CSSRadialGradientValue>(result.get())->setSecondRadius(WTFMove(radius)); |
| } |
| |
| CSSGradientColorStop stop; |
| while (consumeCommaIncludingWhitespace(args)) { |
| if (!consumeDeprecatedGradientColorStop(args, stop, context)) |
| return nullptr; |
| result->addStop(WTFMove(stop)); |
| } |
| |
| result->doneAddingStops(); |
| return result; |
| } |
| |
| static bool consumeGradientColorStops(CSSParserTokenRange& range, const CSSParserContext& context, CSSGradientValue& gradient) |
| { |
| bool supportsColorHints = gradient.gradientType() == CSSLinearGradient || gradient.gradientType() == CSSRadialGradient || gradient.gradientType() == CSSConicGradient; |
| |
| auto consumeStopPosition = [&] { |
| return gradient.gradientType() == CSSConicGradient |
| ? consumeAngleOrPercent(range, context.mode, ValueRange::All, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Allow) |
| : consumeLengthOrPercent(range, context.mode, ValueRange::All); |
| }; |
| |
| // The first color stop cannot be a color hint. |
| bool previousStopWasColorHint = true; |
| do { |
| CSSGradientColorStop stop { consumeColor(range, context), consumeStopPosition(), { } }; |
| if (!stop.color && !stop.position) |
| return false; |
| |
| // Two color hints in a row are not allowed. |
| if (!stop.color && (!supportsColorHints || previousStopWasColorHint)) |
| return false; |
| previousStopWasColorHint = !stop.color; |
| |
| // Stops with both a color and a position can have a second position, which shares the same color. |
| if (stop.color && stop.position) { |
| if (auto secondPosition = consumeStopPosition()) { |
| gradient.addStop(CSSGradientColorStop { stop }); |
| stop.position = WTFMove(secondPosition); |
| } |
| } |
| gradient.addStop(WTFMove(stop)); |
| } while (consumeCommaIncludingWhitespace(range)); |
| |
| // The last color stop cannot be a color hint. |
| if (previousStopWasColorHint) |
| return false; |
| |
| // Must have two or more stops to be valid. |
| if (!gradient.hasAtLeastTwoStops()) |
| return false; |
| |
| gradient.doneAddingStops(); |
| return true; |
| } |
| |
| static RefPtr<CSSValue> consumeDeprecatedRadialGradient(CSSParserTokenRange& args, const CSSParserContext& context, CSSGradientRepeat repeating) |
| { |
| auto result = CSSRadialGradientValue::create(repeating, CSSPrefixedRadialGradient); |
| |
| auto centerCoordinate = consumeOneOrTwoValuedPositionCoordinates(args, context.mode, UnitlessQuirk::Forbid); |
| if (centerCoordinate && !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| |
| auto shape = consumeIdent<CSSValueCircle, CSSValueEllipse>(args); |
| auto sizeKeyword = consumeIdent<CSSValueClosestSide, CSSValueClosestCorner, CSSValueFarthestSide, CSSValueFarthestCorner, CSSValueContain, CSSValueCover>(args); |
| if (!shape) |
| shape = consumeIdent<CSSValueCircle, CSSValueEllipse>(args); |
| |
| // Or, two lengths or percentages |
| if (!shape && !sizeKeyword) { |
| auto horizontalSize = consumeLengthOrPercent(args, context.mode, ValueRange::NonNegative); |
| RefPtr<CSSPrimitiveValue> verticalSize; |
| if (horizontalSize) { |
| verticalSize = consumeLengthOrPercent(args, context.mode, ValueRange::NonNegative); |
| if (!verticalSize) |
| return nullptr; |
| consumeCommaIncludingWhitespace(args); |
| result->setEndHorizontalSize(WTFMove(horizontalSize)); |
| result->setEndVerticalSize(WTFMove(verticalSize)); |
| } |
| } else { |
| consumeCommaIncludingWhitespace(args); |
| } |
| |
| if (!consumeGradientColorStops(args, context, result)) |
| return nullptr; |
| |
| if (centerCoordinate) { |
| result->setFirstX(centerCoordinate->x.copyRef()); |
| result->setFirstY(centerCoordinate->y.copyRef()); |
| result->setSecondX(WTFMove(centerCoordinate->x)); |
| result->setSecondY(WTFMove(centerCoordinate->y)); |
| } |
| result->setShape(WTFMove(shape)); |
| result->setSizingBehavior(WTFMove(sizeKeyword)); |
| |
| return result; |
| } |
| |
| static RefPtr<CSSValue> consumeRadialGradient(CSSParserTokenRange& args, const CSSParserContext& context, CSSGradientRepeat repeating) |
| { |
| RefPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repeating, CSSRadialGradient); |
| |
| RefPtr<CSSPrimitiveValue> shape; |
| RefPtr<CSSPrimitiveValue> sizeKeyword; |
| RefPtr<CSSPrimitiveValue> horizontalSize; |
| RefPtr<CSSPrimitiveValue> verticalSize; |
| |
| // First part of grammar, the size/shape clause: |
| // [ circle || <length> ] | |
| // [ ellipse || [ <length> | <percentage> ]{2} ] | |
| // [ [ circle | ellipse] || <size-keyword> ] |
| for (int i = 0; i < 3; ++i) { |
| if (args.peek().type() == IdentToken) { |
| CSSValueID id = args.peek().id(); |
| if (id == CSSValueCircle || id == CSSValueEllipse) { |
| if (shape) |
| return nullptr; |
| shape = consumeIdent(args); |
| } else if (id == CSSValueClosestSide || id == CSSValueClosestCorner || id == CSSValueFarthestSide || id == CSSValueFarthestCorner) { |
| if (sizeKeyword) |
| return nullptr; |
| sizeKeyword = consumeIdent(args); |
| } else { |
| break; |
| } |
| } else { |
| auto center = consumeLengthOrPercent(args, context.mode, ValueRange::NonNegative); |
| if (!center) |
| break; |
| if (horizontalSize) |
| return nullptr; |
| horizontalSize = center; |
| center = consumeLengthOrPercent(args, context.mode, ValueRange::NonNegative); |
| if (center) { |
| verticalSize = center; |
| ++i; |
| } |
| } |
| } |
| |
| // You can specify size as a keyword or a length/percentage, not both. |
| if (sizeKeyword && horizontalSize) |
| return nullptr; |
| // Circles must have 0 or 1 lengths. |
| if (shape && shape->valueID() == CSSValueCircle && verticalSize) |
| return nullptr; |
| // Ellipses must have 0 or 2 length/percentages. |
| if (shape && shape->valueID() == CSSValueEllipse && horizontalSize && !verticalSize) |
| return nullptr; |
| // If there's only one size, it must be a length. |
| if (!verticalSize && horizontalSize && horizontalSize->isPercentage()) |
| return nullptr; |
| |
| RefPtr<CSSPrimitiveValue> centerX; |
| RefPtr<CSSPrimitiveValue> centerY; |
| if (args.peek().id() == CSSValueAt) { |
| args.consumeIncludingWhitespace(); |
| |
| auto centerCoordinate = consumePositionCoordinates(args, context.mode, UnitlessQuirk::Forbid, PositionSyntax::Position); |
| if (!centerCoordinate) |
| return nullptr; |
| |
| centerX = WTFMove(centerCoordinate->x); |
| centerY = WTFMove(centerCoordinate->y); |
| |
| result->setFirstX(centerX.copyRef()); |
| result->setFirstY(centerY.copyRef()); |
| |
| // Right now, CSS radial gradients have the same start and end centers. |
| result->setSecondX(centerX.copyRef()); |
| result->setSecondY(centerY.copyRef()); |
| } |
| |
| if ((shape || sizeKeyword || horizontalSize || centerX || centerY) && !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| if (!consumeGradientColorStops(args, context, *result)) |
| return nullptr; |
| |
| result->setShape(WTFMove(shape)); |
| result->setSizingBehavior(WTFMove(sizeKeyword)); |
| result->setEndHorizontalSize(WTFMove(horizontalSize)); |
| result->setEndVerticalSize(WTFMove(verticalSize)); |
| |
| return result; |
| } |
| |
| static RefPtr<CSSValue> consumeLinearGradient(CSSParserTokenRange& args, const CSSParserContext& context, CSSGradientRepeat repeating, CSSGradientType gradientType) |
| { |
| RefPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repeating, gradientType); |
| |
| bool expectComma = true; |
| RefPtr<CSSPrimitiveValue> angle = consumeAngle(args, context.mode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Allow); |
| if (angle) |
| result->setAngle(angle.releaseNonNull()); |
| else if (gradientType == CSSPrefixedLinearGradient || consumeIdent<CSSValueTo>(args)) { |
| RefPtr<CSSPrimitiveValue> endX = consumeIdent<CSSValueLeft, CSSValueRight>(args); |
| RefPtr<CSSPrimitiveValue> endY = consumeIdent<CSSValueBottom, CSSValueTop>(args); |
| if (!endX && !endY) { |
| if (gradientType == CSSLinearGradient) |
| return nullptr; |
| endY = CSSPrimitiveValue::createIdentifier(CSSValueTop); |
| expectComma = false; |
| } else if (!endX) { |
| endX = consumeIdent<CSSValueLeft, CSSValueRight>(args); |
| } |
| |
| result->setFirstX(WTFMove(endX)); |
| result->setFirstY(WTFMove(endY)); |
| } else { |
| expectComma = false; |
| } |
| |
| if (expectComma && !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| if (!consumeGradientColorStops(args, context, *result)) |
| return nullptr; |
| return result; |
| } |
| |
| static RefPtr<CSSValue> consumeConicGradient(CSSParserTokenRange& args, const CSSParserContext& context, CSSGradientRepeat repeating) |
| { |
| #if ENABLE(CSS_CONIC_GRADIENTS) |
| RefPtr<CSSConicGradientValue> result = CSSConicGradientValue::create(repeating); |
| |
| bool expectComma = false; |
| if (args.peek().type() == IdentToken) { |
| if (consumeIdent<CSSValueFrom>(args)) { |
| // FIXME: Unlike linear-gradient, conic-gradients are not specified to allow unitless 0 angles - https://www.w3.org/TR/css-images-4/#valdef-conic-gradient-angle. |
| auto angle = consumeAngle(args, context.mode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Allow); |
| if (!angle) |
| return nullptr; |
| result->setAngle(WTFMove(angle)); |
| expectComma = true; |
| } |
| |
| if (consumeIdent<CSSValueAt>(args)) { |
| auto centerCoordinate = consumePositionCoordinates(args, context.mode, UnitlessQuirk::Forbid, PositionSyntax::Position); |
| if (!centerCoordinate) |
| return nullptr; |
| |
| result->setFirstX(centerCoordinate->x.copyRef()); |
| result->setFirstY(centerCoordinate->y.copyRef()); |
| |
| // Right now, conic gradients have the same start and end centers. |
| result->setSecondX(WTFMove(centerCoordinate->x)); |
| result->setSecondY(WTFMove(centerCoordinate->y)); |
| |
| expectComma = true; |
| } |
| } |
| |
| if (expectComma && !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| if (!consumeGradientColorStops(args, context, *result)) |
| return nullptr; |
| return result; |
| #else |
| UNUSED_PARAM(args); |
| UNUSED_PARAM(context); |
| UNUSED_PARAM(repeating); |
| return nullptr; |
| #endif |
| } |
| |
| RefPtr<CSSValue> consumeImageOrNone(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| if (range.peek().id() == CSSValueNone) |
| return consumeIdent(range); |
| return consumeImage(range, context); |
| } |
| |
| static RefPtr<CSSValue> consumeCrossFade(CSSParserTokenRange& args, const CSSParserContext& context, bool prefixed) |
| { |
| auto fromImageValue = consumeImageOrNone(args, context); |
| if (!fromImageValue || !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| auto toImageValue = consumeImageOrNone(args, context); |
| if (!toImageValue || !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| |
| auto percentage = consumeNumberRawOrPercentDividedBy100Raw(args); |
| if (!percentage) |
| return nullptr; |
| auto percentageValue = CSSValuePool::singleton().createValue(clampTo<double>(*percentage, 0, 1), CSSUnitType::CSS_NUMBER); |
| return CSSCrossfadeValue::create(fromImageValue.releaseNonNull(), toImageValue.releaseNonNull(), WTFMove(percentageValue), prefixed); |
| } |
| |
| static RefPtr<CSSValue> consumeWebkitCanvas(CSSParserTokenRange& args) |
| { |
| if (args.peek().type() != IdentToken) |
| return nullptr; |
| auto canvasName = args.consumeIncludingWhitespace().value().toString(); |
| if (!args.atEnd()) |
| return nullptr; |
| return CSSCanvasValue::create(canvasName); |
| } |
| |
| static RefPtr<CSSValue> consumeWebkitNamedImage(CSSParserTokenRange& args) |
| { |
| if (args.peek().type() != IdentToken) |
| return nullptr; |
| auto imageName = args.consumeIncludingWhitespace().value().toString(); |
| if (!args.atEnd()) |
| return nullptr; |
| return CSSNamedImageValue::create(imageName); |
| } |
| |
| static RefPtr<CSSValue> consumeFilterImage(CSSParserTokenRange& args, const CSSParserContext& context) |
| { |
| auto imageValue = consumeImageOrNone(args, context); |
| if (!imageValue || !consumeCommaIncludingWhitespace(args)) |
| return nullptr; |
| |
| auto filterValue = consumeFilter(args, context, AllowedFilterFunctions::PixelFilters); |
| |
| if (!filterValue) |
| return nullptr; |
| |
| if (!args.atEnd()) |
| return nullptr; |
| |
| return CSSFilterImageValue::create(imageValue.releaseNonNull(), filterValue.releaseNonNull()); |
| } |
| |
| #if ENABLE(CSS_PAINTING_API) |
| static RefPtr<CSSValue> consumeCustomPaint(CSSParserTokenRange& args) |
| { |
| if (!RuntimeEnabledFeatures::sharedFeatures().cssPaintingAPIEnabled()) |
| return nullptr; |
| if (args.peek().type() != IdentToken) |
| return nullptr; |
| auto name = args.consumeIncludingWhitespace().value().toString(); |
| |
| if (!args.atEnd() && args.peek() != CommaToken) |
| return nullptr; |
| if (!args.atEnd()) |
| args.consume(); |
| |
| auto argumentList = CSSVariableData::create(args); |
| |
| while (!args.atEnd()) |
| args.consume(); |
| |
| return CSSPaintImageValue::create(name, WTFMove(argumentList)); |
| } |
| #endif |
| |
| static RefPtr<CSSValue> consumeGeneratedImage(CSSParserTokenRange& range, const CSSParserContext& context) |
| { |
| CSSValueID id = range.peek().functionId(); |
| CSSParserTokenRange rangeCopy = range; |
| CSSParserTokenRange args = consumeFunction(rangeCopy); |
| RefPtr<CSSValue> result; |
| if (id == CSSValueRadialGradient) |
| result = consumeRadialGradient(args, context, NonRepeating); |
| else if (id == CSSValueRepeatingRadialGradient) |
| result = consumeRadialGradient(args, context, Repeating); |
| else if (id == CSSValueWebkitLinearGradient) |
| result = consumeLinearGradient(args, context, NonRepeating, CSSPrefixedLinearGradient); |
| else if (id == CSSValueWebkitRepeatingLinearGradient) |
| result = consumeLinearGradient(args, context, Repeating, CSSPrefixedLinearGradient); |
| else if (id == CSSValueRepeatingLinearGradient) |
| result = consumeLinearGradient(args, context, Repeating, CSSLinearGradient); |
| else if (id == CSSValueLinearGradient) |
| result = consumeLinearGradient(args, context, NonRepeating, CSSLinearGradient); |
| else if (id == CSSValueWebkitGradient) |
| result = consumeDeprecatedGradient(args, context); |
| else if (id == CSSValueWebkitRadialGradient) |
| result = consumeDeprecatedRadialGradient(args, context, NonRepeating); |
| else if (id == CSSValueWebkitRepeatingRadialGradient) |
| result = consumeDeprecatedRadialGradient(args, context, Repeating); |
| else if (id == CSSValueConicGradient) |
| result = consumeConicGradient(args, context, NonRepeating); |
| else if (id == CSSValueRepeatingConicGradient) |
| result = consumeConicGradient(args, context, Repeating); |
| else if (id == CSSValueWebkitCrossFade || id == CSSValueCrossFade) |
| result = consumeCrossFade(args, context, id == CSSValueWebkitCrossFade); |
| else if (id == CSSValueWebkitCanvas) |
| result = consumeWebkitCanvas(args); |
| else if (id == CSSValueWebkitNamedImage) |
| result = consumeWebkitNamedImage(args); |
| else if (id == CSSValueWebkitFilter || id == CSSValueFilter) |
| result = consumeFilterImage(args, context); |
| #if ENABLE(CSS_PAINTING_API) |
| else if (id == CSSValuePaint) |
| result = consumeCustomPaint(args); |
| #endif |
| if (!result || !args.atEnd()) |
| return nullptr; |
| range = rangeCopy; |
| return result; |
| } |
| |
| static RefPtr<CSSValue> consumeImageSet(CSSParserTokenRange& range, const CSSParserContext& context, OptionSet<AllowedImageType> allowedImageTypes) |
| { |
| CSSParserTokenRange rangeCopy = range; |
| CSSParserTokenRange args = consumeFunction(rangeCopy); |
| RefPtr<CSSImageSetValue> imageSet = CSSImageSetValue::create(); |
| do { |
| auto image = consumeImage(args, context, allowedImageTypes); |
| if (!image) |
| return nullptr; |
| |
| imageSet->append(image.releaseNonNull()); |
| |
| auto resolution = consumeResolution(args); |
| if (!resolution || resolution->floatValue() <= 0) |
| return nullptr; |
| |
| imageSet->append(resolution.releaseNonNull()); |
| } while (consumeCommaIncludingWhitespace(args)); |
| if (!args.atEnd()) |
| return nullptr; |
| range = rangeCopy; |
| return imageSet; |
| } |
| |
| static bool isGeneratedImage(CSSValueID id) |
| { |
| return id == CSSValueLinearGradient |
| || id == CSSValueRadialGradient |
| || id == CSSValueConicGradient |
| || id == CSSValueRepeatingLinearGradient |
| || id == CSSValueRepeatingRadialGradient |
| || id == CSSValueRepeatingConicGradient |
| || id == CSSValueWebkitLinearGradient |
| || id == CSSValueWebkitRadialGradient |
| || id == CSSValueWebkitRepeatingLinearGradient |
| || id == CSSValueWebkitRepeatingRadialGradient |
| || id == CSSValueWebkitGradient |
| || id == CSSValueWebkitCrossFade |
| || id == CSSValueWebkitCanvas |
| || id == CSSValueCrossFade |
| || id == CSSValueWebkitNamedImage |
| || id == CSSValueWebkitFilter |
| #if ENABLE(CSS_PAINTING_API) |
| || id == CSSValuePaint |
| #endif |
| || id == CSSValueFilter; |
| } |
| |
| static bool isPixelFilterFunction(CSSValueID filterFunction) |
| { |
| switch (filterFunction) { |
| case CSSValueBlur: |
| case CSSValueBrightness: |
| case CSSValueContrast: |
| case CSSValueDropShadow: |
| case CSSValueGrayscale: |
| case CSSValueHueRotate: |
| case CSSValueInvert: |
| case CSSValueOpacity: |
| case CSSValueSaturate: |
| case CSSValueSepia: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool isColorFilterFunction(CSSValueID filterFunction) |
| { |
| switch (filterFunction) { |
| case CSSValueBrightness: |
| case CSSValueContrast: |
| case CSSValueGrayscale: |
| case CSSValueHueRotate: |
| case CSSValueInvert: |
| case CSSValueOpacity: |
| case CSSValueSaturate: |
| case CSSValueSepia: |
| case CSSValueAppleInvertLightness: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool allowsValuesGreaterThanOne(CSSValueID filterFunction) |
| { |
| switch (filterFunction) { |
| case CSSValueBrightness: |
| case CSSValueContrast: |
| case CSSValueSaturate: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static RefPtr<CSSFunctionValue> consumeFilterFunction(CSSParserTokenRange& range, const CSSParserContext& context, AllowedFilterFunctions allowedFunctions) |
| { |
| CSSValueID filterType = range.peek().functionId(); |
| switch (allowedFunctions) { |
| case AllowedFilterFunctions::PixelFilters: |
| if (!isPixelFilterFunction(filterType)) |
| return nullptr; |
| break; |
| case AllowedFilterFunctions::ColorFilters: |
| if (!isColorFilterFunction(filterType)) |
| return nullptr; |
| break; |
| } |
| |
| CSSParserTokenRange args = consumeFunction(range); |
| RefPtr<CSSFunctionValue> filterValue = CSSFunctionValue::create(filterType); |
| |
| if (filterType == CSSValueAppleInvertLightness) { |
| if (!args.atEnd()) |
| return nullptr; |
| return filterValue; |
| } |
| |
| RefPtr<CSSValue> parsedValue; |
| |
| if (filterType == CSSValueDropShadow) |
| parsedValue = consumeSingleShadow(args, context, false, false); |
| else { |
| if (args.atEnd()) |
| return filterValue; |
| |
| if (filterType == CSSValueHueRotate) |
| parsedValue = consumeAngle(args, context.mode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Allow); |
| else if (filterType == CSSValueBlur) |
| parsedValue = consumeLength(args, HTMLStandardMode, ValueRange::NonNegative); |
| else { |
| parsedValue = consumePercent(args, ValueRange::NonNegative); |
| if (!parsedValue) |
| parsedValue = consumeNumber(args, ValueRange::NonNegative); |
| if (parsedValue && !allowsValuesGreaterThanOne(filterType)) { |
| bool isPercentage = downcast<CSSPrimitiveValue>(*parsedValue).isPercentage(); |
| double maxAllowed = isPercentage ? 100.0 : 1.0; |
| if (downcast<CSSPrimitiveValue>(*parsedValue).doubleValue() > maxAllowed) |
| parsedValue = CSSPrimitiveValue::create(maxAllowed, isPercentage ? CSSUnitType::CSS_PERCENTAGE : CSSUnitType::CSS_NUMBER); |
| } |
| } |
| } |
| if (!parsedValue || !args.atEnd()) |
| return nullptr; |
| filterValue->append(parsedValue.releaseNonNull()); |
| return filterValue; |
| } |
| |
| RefPtr<CSSValue> consumeFilter(CSSParserTokenRange& range, const CSSParserContext& context, AllowedFilterFunctions allowedFunctions) |
| { |
| if (range.peek().id() == CSSValueNone) |
| return consumeIdent(range); |
| |
| bool referenceFiltersAllowed = allowedFunctions == AllowedFilterFunctions::PixelFilters; |
| auto list = CSSValueList::createSpaceSeparated(); |
| do { |
| RefPtr<CSSValue> filterValue = referenceFiltersAllowed ? consumeUrl(range) : nullptr; |
| if (!filterValue) { |
| filterValue = consumeFilterFunction(range, context, allowedFunctions); |
| if (!filterValue) |
| return nullptr; |
| } |
| list->append(filterValue.releaseNonNull()); |
| } while (!range.atEnd()); |
| |
| return list.ptr(); |
| } |
| |
| RefPtr<CSSShadowValue> consumeSingleShadow(CSSParserTokenRange& range, const CSSParserContext& context, bool allowInset, bool allowSpread) |
| { |
| RefPtr<CSSPrimitiveValue> style; |
| RefPtr<CSSPrimitiveValue> color; |
| RefPtr<CSSPrimitiveValue> horizontalOffset; |
| RefPtr<CSSPrimitiveValue> verticalOffset; |
| RefPtr<CSSPrimitiveValue> blurRadius; |
| RefPtr<CSSPrimitiveValue> spreadDistance; |
| |
| for (size_t i = 0; i < 3; i++) { |
| if (range.atEnd()) |
| break; |
| |
| const CSSParserToken& nextToken = range.peek(); |
| // If we have come to a comma (e.g. if this range represents a comma-separated list of <shadow>s), we are done parsing this <shadow>. |
| if (nextToken.type() == CommaToken) |
| break; |
| |
| if (nextToken.id() == CSSValueInset) { |
| if (!allowInset || style) |
| return nullptr; |
| style = consumeIdent(range); |
| continue; |
| } |
| |
| auto maybeColor = consumeColor(range, context); |
| if (maybeColor) { |
| // If we just parsed a color but already had one, the given token range is not a valid <shadow>. |
| if (color) |
| return nullptr; |
| color = maybeColor; |
| continue; |
| } |
| |
| // If the current token is neither a color nor the `inset` keyword, it must be the lengths component of this value. |
| if (horizontalOffset || verticalOffset || blurRadius || spreadDistance) { |
| // If we've already parsed these lengths, the given value is invalid as there cannot be two lengths components in a single <shadow> value. |
| return nullptr; |
| } |
| horizontalOffset = consumeLength(range, context.mode, ValueRange::All); |
| if (!horizontalOffset) |
| return nullptr; |
| verticalOffset = consumeLength(range, context.mode, ValueRange::All); |
| if (!verticalOffset) |
| return nullptr; |
| |
| const CSSParserToken& token = range.peek(); |
| // The explicit check for calc() is unfortunate. This is ensuring that we only fail parsing if there is a length, but it fails the range check. |
| if (token.type() == DimensionToken || token.type() == NumberToken || (token.type() == FunctionToken && CSSCalcValue::isCalcFunction(token.functionId()))) { |
| blurRadius = consumeLength(range, context.mode, ValueRange::NonNegative); |
| if (!blurRadius) |
| return nullptr; |
| } |
| |
| if (blurRadius && allowSpread) |
| spreadDistance = consumeLength(range, context.mode, ValueRange::All); |
| } |
| |
| // In order for this to be a valid <shadow>, at least these lengths must be present. |
| if (!horizontalOffset || !verticalOffset) |
| return nullptr; |
| return CSSShadowValue::create(WTFMove(horizontalOffset), WTFMove(verticalOffset), WTFMove(blurRadius), WTFMove(spreadDistance), WTFMove(style), WTFMove(color)); |
| } |
| |
| RefPtr<CSSValue> consumeImage(CSSParserTokenRange& range, const CSSParserContext& context, OptionSet<AllowedImageType> allowedImageTypes) |
| { |
| if (range.peek().type() == StringToken && allowedImageTypes.contains(AllowedImageType::RawStringAsURL)) { |
| return CSSImageValue::create(context.completeURL(range.consumeIncludingWhitespace().value().toAtomString().string()), |
| context.isContentOpaque ? LoadedFromOpaqueSource::Yes : LoadedFromOpaqueSource::No); |
| } |
| |
| if (range.peek().type() == FunctionToken) { |
| CSSValueID functionId = range.peek().functionId(); |
| if ((allowedImageTypes.contains(AllowedImageType::GeneratedImage)) && isGeneratedImage(functionId)) |
| return consumeGeneratedImage(range, context); |
| |
| if (allowedImageTypes.contains(AllowedImageType::ImageSet)) { |
| if (functionId == CSSValueImageSet) |
| return consumeImageSet(range, context, (allowedImageTypes | AllowedImageType::RawStringAsURL) - AllowedImageType::ImageSet); |
| if (functionId == CSSValueWebkitImageSet) |
| return consumeImageSet(range, context, AllowedImageType::URLFunction); |
| } |
| } |
| |
| if (allowedImageTypes.contains(AllowedImageType::URLFunction)) { |
| if (auto string = consumeUrlAsStringView(range); !string.isNull()) { |
| return CSSImageValue::create(context.completeURL(string.toAtomString().string()), |
| context.isContentOpaque ? LoadedFromOpaqueSource::Yes : LoadedFromOpaqueSource::No); |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| // https://www.w3.org/TR/css-counter-styles-3/#predefined-counters |
| bool isPredefinedCounterStyle(CSSValueID valueID) |
| { |
| return valueID >= CSSValueDisc && valueID <= CSSValueEthiopicNumeric; |
| } |
| |
| // https://www.w3.org/TR/css-counter-styles-3/#typedef-counter-style-name |
| RefPtr<CSSPrimitiveValue> consumeCounterStyleName(CSSParserTokenRange& range) |
| { |
| // <counter-style-name> is a <custom-ident> that is not an ASCII case-insensitive match for "none". |
| auto valueID = range.peek().id(); |
| if (valueID == CSSValueNone) |
| return nullptr; |
| // If the value is an ASCII case-insensitive match for any of the predefined counter styles, lowercase it. |
| if (auto name = consumeCustomIdent(range, isPredefinedCounterStyle(valueID))) |
| return name; |
| return nullptr; |
| } |
| |
| // https://www.w3.org/TR/css-counter-styles-3/#typedef-counter-style-name |
| AtomString consumeCounterStyleNameInPrelude(CSSParserTokenRange& prelude) |
| { |
| auto nameToken = prelude.consumeIncludingWhitespace(); |
| if (!prelude.atEnd()) |
| return AtomString(); |
| // Ensure this token is a valid <custom-ident>. |
| if (nameToken.type() != IdentToken || !isValidCustomIdentifier(nameToken.id())) |
| return AtomString(); |
| // In the context of the prelude of an @counter-style rule, a <counter-style-name> must not be an ASCII |
| // case-insensitive match for "decimal" or "disc". No <counter-style-name>, prelude or not, may be an ASCII |
| // case-insensitive match for "none". |
| if (identMatches<CSSValueDecimal, CSSValueDisc, CSSValueNone>(nameToken.id())) |
| return AtomString(); |
| auto name = nameToken.value(); |
| return isPredefinedCounterStyle(nameToken.id()) ? name.convertToASCIILowercaseAtom() : name.toAtomString(); |
| } |
| |
| std::optional<CSSValueID> consumeFontVariantCSS21Raw(CSSParserTokenRange& range) |
| { |
| return consumeIdentRaw<CSSValueNormal, CSSValueSmallCaps>(range); |
| } |
| |
| std::optional<CSSValueID> consumeFontWeightKeywordValueRaw(CSSParserTokenRange& range) |
| { |
| return consumeIdentRaw<CSSValueNormal, CSSValueBold, CSSValueBolder, CSSValueLighter>(range); |
| } |
| |
| std::optional<FontWeightRaw> consumeFontWeightRaw(CSSParserTokenRange& range) |
| { |
| if (auto result = consumeFontWeightKeywordValueRaw(range)) |
| return { *result }; |
| if (auto result = consumeFontWeightNumberRaw(range)) |
| return { *result }; |
| return std::nullopt; |
| } |
| |
| std::optional<CSSValueID> consumeFontStretchKeywordValueRaw(CSSParserTokenRange& range) |
| { |
| return consumeIdentRaw<CSSValueUltraCondensed, CSSValueExtraCondensed, CSSValueCondensed, CSSValueSemiCondensed, CSSValueNormal, CSSValueSemiExpanded, CSSValueExpanded, CSSValueExtraExpanded, CSSValueUltraExpanded>(range); |
| } |
| |
| std::optional<CSSValueID> consumeFontStyleKeywordValueRaw(CSSParserTokenRange& range) |
| { |
| return consumeIdentRaw<CSSValueNormal, CSSValueItalic, CSSValueOblique>(range); |
| } |
| |
| std::optional<FontStyleRaw> consumeFontStyleRaw(CSSParserTokenRange& range, CSSParserMode parserMode) |
| { |
| auto result = consumeFontStyleKeywordValueRaw(range); |
| if (!result) |
| return std::nullopt; |
| |
| auto ident = *result; |
| if (ident == CSSValueNormal || ident == CSSValueItalic) |
| return { { ident, std::nullopt } }; |
| ASSERT(ident == CSSValueOblique); |
| #if ENABLE(VARIATION_FONTS) |
| if (!range.atEnd()) { |
| // FIXME: This angle does specify that unitless 0 is allowed - see https://drafts.csswg.org/css-fonts-4/#valdef-font-style-oblique-angle |
| if (auto angle = consumeAngleRaw(range, parserMode, UnitlessQuirk::Forbid, UnitlessZeroQuirk::Allow)) { |
| if (isFontStyleAngleInRange(CSSPrimitiveValue::computeDegrees(angle->type, angle->value))) |
| return { { CSSValueOblique, WTFMove(angle) } }; |
| return std::nullopt; |
| } |
| } |
| #else |
| UNUSED_PARAM(parserMode); |
| #endif |
| return { { CSSValueOblique, std::nullopt } }; |
| } |
| |
| String concatenateFamilyName(CSSParserTokenRange& range) |
| { |
| StringBuilder builder; |
| bool addedSpace = false; |
| const CSSParserToken& firstToken = range.peek(); |
| while (range.peek().type() == IdentToken) { |
| if (!builder.isEmpty()) { |
| builder.append(' '); |
| addedSpace = true; |
| } |
| builder.append(range.consumeIncludingWhitespace().value()); |
| } |
| if (!addedSpace && !isValidCustomIdentifier(firstToken.id())) |
| return String(); |
| return builder.toString(); |
| } |
| |
| String consumeFamilyNameRaw(CSSParserTokenRange& range) |
| { |
| if (range.peek().type() == StringToken) |
| return range.consumeIncludingWhitespace().value().toString(); |
| if (range.peek().type() != IdentToken) |
| return String(); |
| return concatenateFamilyName(range); |
| } |
| |
| std::optional<CSSValueID> consumeGenericFamilyRaw(CSSParserTokenRange& range) |
| { |
| return consumeIdentRangeRaw(range, CSSValueSerif, CSSValueWebkitBody); |
| } |
| |
| std::optional<Vector<FontFamilyRaw>> consumeFontFamilyRaw(CSSParserTokenRange& range) |
| { |
| Vector<FontFamilyRaw> list; |
| do { |
| if (auto ident = consumeGenericFamilyRaw(range)) |
| list.append({ *ident }); |
| else { |
| auto familyName = consumeFamilyNameRaw(range); |
| if (familyName.isNull()) |
| return std::nullopt; |
| list.append({ familyName }); |
| } |
| } while (consumeCommaIncludingWhitespace(range)); |
| return list; |
| } |
| |
| std::optional<FontSizeRaw> consumeFontSizeRaw(CSSParserTokenRange& range, CSSParserMode parserMode, UnitlessQuirk unitless) |
| { |
| if (range.peek().id() >= CSSValueXxSmall && range.peek().id() <= CSSValueLarger) { |
| if (auto ident = consumeIdentRaw(range)) |
| return { *ident }; |
| return std::nullopt; |
| } |
| |
| if (auto result = consumeLengthOrPercentRaw(range, parserMode, ValueRange::NonNegative, unitless)) |
| return { *result }; |
| |
| return std::nullopt; |
| } |
| |
| std::optional<LineHeightRaw> consumeLineHeightRaw(CSSParserTokenRange& range, CSSParserMode parserMode) |
| { |
| if (range.peek().id() == CSSValueNormal) { |
| if (auto ident = consumeIdentRaw(range)) |
| return { *ident }; |
| return std::nullopt; |
| } |
| |
| if (auto number = consumeNumberRaw(range, ValueRange::NonNegative)) |
| return { *number }; |
| |
| if (auto lengthOrPercent = consumeLengthOrPercentRaw(range, parserMode, ValueRange::NonNegative)) |
| return { *lengthOrPercent }; |
| |
| return std::nullopt; |
| } |
| |
| std::optional<FontRaw> consumeFontRaw(CSSParserTokenRange& range, CSSParserMode parserMode) |
| { |
| // Let's check if there is an inherit or initial somewhere in the shorthand. |
| CSSParserTokenRange rangeCopy = range; |
| while (!rangeCopy.atEnd()) { |
| CSSValueID id = rangeCopy.consumeIncludingWhitespace().id(); |
| if (id == CSSValueInherit || id == CSSValueInitial) |
| return std::nullopt; |
| } |
| |
| FontRaw result; |
| |
| while (!range.atEnd()) { |
| CSSValueID id = range.peek().id(); |
| if (!result.style) { |
| if ((result.style = consumeFontStyleRaw(range, parserMode))) |
| continue; |
| } |
| if (!result.variantCaps && (id == CSSValueNormal || id == CSSValueSmallCaps)) { |
| // Font variant in the shorthand is particular, it only accepts normal or small-caps. |
| // See https://drafts.csswg.org/css-fonts/#propdef-font |
| if ((result.variantCaps = consumeFontVariantCSS21Raw(range))) |
| continue; |
| } |
| if (!result.weight) { |
| if ((result.weight = consumeFontWeightRaw(range))) |
| continue; |
| } |
| if (!result.stretch) { |
| if ((result.stretch = consumeFontStretchKeywordValueRaw(range))) |
| continue; |
| } |
| break; |
| } |
| |
| if (range.atEnd()) |
| return std::nullopt; |
| |
| // Now a font size _must_ come. |
| if (auto size = consumeFontSizeRaw(range, parserMode)) |
| result.size = *size; |
| else |
| return std::nullopt; |
| |
| if (range.atEnd()) |
| return std::nullopt; |
| |
| if (consumeSlashIncludingWhitespace(range)) { |
| if (!(result.lineHeight = consumeLineHeightRaw(range, parserMode))) |
| return std::nullopt; |
| } |
| |
| // Font family must come now. |
| if (auto family = consumeFontFamilyRaw(range)) |
| result.family = *family; |
| else |
| return std::nullopt; |
| |
| if (!range.atEnd()) |
| return std::nullopt; |
| |
| return result; |
| } |
| |
| const AtomString& genericFontFamily(CSSValueID ident) |
| { |
| switch (ident) { |
| case CSSValueSerif: |
| return serifFamily.get(); |
| case CSSValueSansSerif: |
| return sansSerifFamily.get(); |
| case CSSValueCursive: |
| return cursiveFamily.get(); |
| case CSSValueFantasy: |
| return fantasyFamily.get(); |
| case CSSValueMonospace: |
| return monospaceFamily.get(); |
| case CSSValueWebkitPictograph: |
| return pictographFamily.get(); |
| case CSSValueSystemUi: |
| return systemUiFamily.get(); |
| default: |
| return emptyAtom(); |
| } |
| } |
| |
| WebKitFontFamilyNames::FamilyNamesIndex genericFontFamilyIndex(CSSValueID ident) |
| { |
| switch (ident) { |
| case CSSValueSerif: |
| return WebKitFontFamilyNames::FamilyNamesIndex::SerifFamily; |
| case CSSValueSansSerif: |
| return WebKitFontFamilyNames::FamilyNamesIndex::SansSerifFamily; |
| case CSSValueCursive: |
| return WebKitFontFamilyNames::FamilyNamesIndex::CursiveFamily; |
| case CSSValueFantasy: |
| return WebKitFontFamilyNames::FamilyNamesIndex::FantasyFamily; |
| case CSSValueMonospace: |
| return WebKitFontFamilyNames::FamilyNamesIndex::MonospaceFamily; |
| case CSSValueWebkitPictograph: |
| return WebKitFontFamilyNames::FamilyNamesIndex::PictographFamily; |
| case CSSValueSystemUi: |
| return WebKitFontFamilyNames::FamilyNamesIndex::SystemUiFamily; |
| default: |
| ASSERT_NOT_REACHED(); |
| return WebKitFontFamilyNames::FamilyNamesIndex::StandardFamily; |
| } |
| } |
| |
| } // namespace CSSPropertyParserHelpers |
| |
| } // namespace WebCore |