| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "core/css/parser/CSSParserFastPaths.h" |
| |
| #include "core/StylePropertyShorthand.h" |
| #include "core/css/CSSFunctionValue.h" |
| #include "core/css/CSSValuePool.h" |
| #include "core/css/parser/CSSParserIdioms.h" |
| #include "core/css/parser/CSSParserString.h" |
| #include "core/css/parser/CSSPropertyParser.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| |
| namespace blink { |
| |
| static inline bool isSimpleLengthPropertyID(CSSPropertyID propertyId, bool& acceptsNegativeNumbers) |
| { |
| switch (propertyId) { |
| case CSSPropertyFontSize: |
| case CSSPropertyGridColumnGap: |
| case CSSPropertyGridRowGap: |
| case CSSPropertyHeight: |
| case CSSPropertyWidth: |
| case CSSPropertyMinHeight: |
| case CSSPropertyMinWidth: |
| case CSSPropertyPaddingBottom: |
| case CSSPropertyPaddingLeft: |
| case CSSPropertyPaddingRight: |
| case CSSPropertyPaddingTop: |
| case CSSPropertyWebkitLogicalWidth: |
| case CSSPropertyWebkitLogicalHeight: |
| case CSSPropertyWebkitMinLogicalWidth: |
| case CSSPropertyWebkitMinLogicalHeight: |
| case CSSPropertyWebkitPaddingAfter: |
| case CSSPropertyWebkitPaddingBefore: |
| case CSSPropertyWebkitPaddingEnd: |
| case CSSPropertyWebkitPaddingStart: |
| case CSSPropertyShapeMargin: |
| case CSSPropertyR: |
| case CSSPropertyRx: |
| case CSSPropertyRy: |
| acceptsNegativeNumbers = false; |
| return true; |
| case CSSPropertyBottom: |
| case CSSPropertyCx: |
| case CSSPropertyCy: |
| case CSSPropertyLeft: |
| case CSSPropertyMarginBottom: |
| case CSSPropertyMarginLeft: |
| case CSSPropertyMarginRight: |
| case CSSPropertyMarginTop: |
| case CSSPropertyMotionOffset: |
| case CSSPropertyRight: |
| case CSSPropertyTop: |
| case CSSPropertyWebkitMarginAfter: |
| case CSSPropertyWebkitMarginBefore: |
| case CSSPropertyWebkitMarginEnd: |
| case CSSPropertyWebkitMarginStart: |
| case CSSPropertyX: |
| case CSSPropertyY: |
| acceptsNegativeNumbers = true; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| template <typename CharacterType> |
| static inline bool parseSimpleLength(const CharacterType* characters, unsigned length, CSSPrimitiveValue::UnitType& unit, double& number) |
| { |
| if (length > 2 && (characters[length - 2] | 0x20) == 'p' && (characters[length - 1] | 0x20) == 'x') { |
| length -= 2; |
| unit = CSSPrimitiveValue::UnitType::Pixels; |
| } else if (length > 1 && characters[length - 1] == '%') { |
| length -= 1; |
| unit = CSSPrimitiveValue::UnitType::Percentage; |
| } |
| |
| // We rely on charactersToDouble for validation as well. The function |
| // will set "ok" to "false" if the entire passed-in character range does |
| // not represent a double. |
| bool ok; |
| number = charactersToDouble(characters, length, &ok); |
| return ok && CSSPropertyParser::isValidNumericValue(number); |
| } |
| |
| static PassRefPtrWillBeRawPtr<CSSValue> parseSimpleLengthValue(CSSPropertyID propertyId, const String& string, CSSParserMode cssParserMode) |
| { |
| ASSERT(!string.isEmpty()); |
| bool acceptsNegativeNumbers = false; |
| |
| // In @viewport, width and height are shorthands, not simple length values. |
| if (isCSSViewportParsingEnabledForMode(cssParserMode) || !isSimpleLengthPropertyID(propertyId, acceptsNegativeNumbers)) |
| return nullptr; |
| |
| unsigned length = string.length(); |
| double number; |
| CSSPrimitiveValue::UnitType unit = CSSPrimitiveValue::UnitType::Number; |
| |
| if (string.is8Bit()) { |
| if (!parseSimpleLength(string.characters8(), length, unit, number)) |
| return nullptr; |
| } else { |
| if (!parseSimpleLength(string.characters16(), length, unit, number)) |
| return nullptr; |
| } |
| |
| if (unit == CSSPrimitiveValue::UnitType::Number) { |
| if (cssParserMode == SVGAttributeMode) |
| unit = CSSPrimitiveValue::UnitType::UserUnits; |
| else if (!number) |
| unit = CSSPrimitiveValue::UnitType::Pixels; |
| else |
| return nullptr; |
| } |
| |
| if (number < 0 && !acceptsNegativeNumbers) |
| return nullptr; |
| |
| return cssValuePool().createValue(number, unit); |
| } |
| |
| static inline bool isColorPropertyID(CSSPropertyID propertyId) |
| { |
| switch (propertyId) { |
| case CSSPropertyColor: |
| case CSSPropertyBackgroundColor: |
| case CSSPropertyBorderBottomColor: |
| case CSSPropertyBorderLeftColor: |
| case CSSPropertyBorderRightColor: |
| case CSSPropertyBorderTopColor: |
| case CSSPropertyFill: |
| case CSSPropertyFloodColor: |
| case CSSPropertyLightingColor: |
| case CSSPropertyOutlineColor: |
| case CSSPropertyStopColor: |
| case CSSPropertyStroke: |
| case CSSPropertyWebkitBorderAfterColor: |
| case CSSPropertyWebkitBorderBeforeColor: |
| case CSSPropertyWebkitBorderEndColor: |
| case CSSPropertyWebkitBorderStartColor: |
| case CSSPropertyWebkitColumnRuleColor: |
| case CSSPropertyWebkitTextEmphasisColor: |
| case CSSPropertyWebkitTextFillColor: |
| case CSSPropertyWebkitTextStrokeColor: |
| case CSSPropertyTextDecorationColor: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Returns the number of characters which form a valid double |
| // and are terminated by the given terminator character |
| template <typename CharacterType> |
| static int checkForValidDouble(const CharacterType* string, const CharacterType* end, const char terminator) |
| { |
| int length = end - string; |
| if (length < 1) |
| return 0; |
| |
| bool decimalMarkSeen = false; |
| int processedLength = 0; |
| |
| for (int i = 0; i < length; ++i) { |
| if (string[i] == terminator) { |
| processedLength = i; |
| break; |
| } |
| if (!isASCIIDigit(string[i])) { |
| if (!decimalMarkSeen && string[i] == '.') |
| decimalMarkSeen = true; |
| else |
| return 0; |
| } |
| } |
| |
| if (decimalMarkSeen && processedLength == 1) |
| return 0; |
| |
| return processedLength; |
| } |
| |
| // Returns the number of characters consumed for parsing a valid double |
| // terminated by the given terminator character |
| template <typename CharacterType> |
| static int parseDouble(const CharacterType* string, const CharacterType* end, const char terminator, double& value) |
| { |
| int length = checkForValidDouble(string, end, terminator); |
| if (!length) |
| return 0; |
| |
| int position = 0; |
| double localValue = 0; |
| |
| // The consumed characters here are guaranteed to be |
| // ASCII digits with or without a decimal mark |
| for (; position < length; ++position) { |
| if (string[position] == '.') |
| break; |
| localValue = localValue * 10 + string[position] - '0'; |
| } |
| |
| if (++position == length) { |
| value = localValue; |
| return length; |
| } |
| |
| double fraction = 0; |
| double scale = 1; |
| |
| const double maxScale = 1000000; |
| while (position < length && scale < maxScale) { |
| fraction = fraction * 10 + string[position++] - '0'; |
| scale *= 10; |
| } |
| |
| value = localValue + fraction / scale; |
| return length; |
| } |
| |
| template <typename CharacterType> |
| static bool parseColorIntOrPercentage(const CharacterType*& string, const CharacterType* end, const char terminator, CSSPrimitiveValue::UnitType& expect, int& value) |
| { |
| const CharacterType* current = string; |
| double localValue = 0; |
| bool negative = false; |
| while (current != end && isHTMLSpace<CharacterType>(*current)) |
| current++; |
| if (current != end && *current == '-') { |
| negative = true; |
| current++; |
| } |
| if (current == end || !isASCIIDigit(*current)) |
| return false; |
| while (current != end && isASCIIDigit(*current)) { |
| double newValue = localValue * 10 + *current++ - '0'; |
| if (newValue >= 255) { |
| // Clamp values at 255. |
| localValue = 255; |
| while (current != end && isASCIIDigit(*current)) |
| ++current; |
| break; |
| } |
| localValue = newValue; |
| } |
| |
| if (current == end) |
| return false; |
| |
| if (expect == CSSPrimitiveValue::UnitType::Number && (*current == '.' || *current == '%')) |
| return false; |
| |
| if (*current == '.') { |
| // We already parsed the integral part, try to parse |
| // the fraction part of the percentage value. |
| double percentage = 0; |
| int numCharactersParsed = parseDouble(current, end, '%', percentage); |
| if (!numCharactersParsed) |
| return false; |
| current += numCharactersParsed; |
| if (*current != '%') |
| return false; |
| localValue += percentage; |
| } |
| |
| if (expect == CSSPrimitiveValue::UnitType::Percentage && *current != '%') |
| return false; |
| |
| if (*current == '%') { |
| expect = CSSPrimitiveValue::UnitType::Percentage; |
| localValue = localValue / 100.0 * 256.0; |
| // Clamp values at 255 for percentages over 100% |
| if (localValue > 255) |
| localValue = 255; |
| current++; |
| } else { |
| expect = CSSPrimitiveValue::UnitType::Number; |
| } |
| |
| while (current != end && isHTMLSpace<CharacterType>(*current)) |
| current++; |
| if (current == end || *current++ != terminator) |
| return false; |
| // Clamp negative values at zero. |
| value = negative ? 0 : static_cast<int>(localValue); |
| string = current; |
| return true; |
| } |
| |
| template <typename CharacterType> |
| static inline bool isTenthAlpha(const CharacterType* string, const int length) |
| { |
| // "0.X" |
| if (length == 3 && string[0] == '0' && string[1] == '.' && isASCIIDigit(string[2])) |
| return true; |
| |
| // ".X" |
| if (length == 2 && string[0] == '.' && isASCIIDigit(string[1])) |
| return true; |
| |
| return false; |
| } |
| |
| template <typename CharacterType> |
| static inline bool parseAlphaValue(const CharacterType*& string, const CharacterType* end, const char terminator, int& value) |
| { |
| while (string != end && isHTMLSpace<CharacterType>(*string)) |
| string++; |
| |
| bool negative = false; |
| |
| if (string != end && *string == '-') { |
| negative = true; |
| string++; |
| } |
| |
| value = 0; |
| |
| int length = end - string; |
| if (length < 2) |
| return false; |
| |
| if (string[length - 1] != terminator || !isASCIIDigit(string[length - 2])) |
| return false; |
| |
| if (string[0] != '0' && string[0] != '1' && string[0] != '.') { |
| if (checkForValidDouble(string, end, terminator)) { |
| value = negative ? 0 : 255; |
| string = end; |
| return true; |
| } |
| return false; |
| } |
| |
| if (length == 2 && string[0] != '.') { |
| value = !negative && string[0] == '1' ? 255 : 0; |
| string = end; |
| return true; |
| } |
| |
| if (isTenthAlpha(string, length - 1)) { |
| static const int tenthAlphaValues[] = { 0, 25, 51, 76, 102, 127, 153, 179, 204, 230 }; |
| value = negative ? 0 : tenthAlphaValues[string[length - 2] - '0']; |
| string = end; |
| return true; |
| } |
| |
| double alpha = 0; |
| if (!parseDouble(string, end, terminator, alpha)) |
| return false; |
| value = negative ? 0 : static_cast<int>(alpha * nextafter(256.0, 0.0)); |
| string = end; |
| return true; |
| } |
| |
| template <typename CharacterType> |
| static inline bool mightBeRGBA(const CharacterType* characters, unsigned length) |
| { |
| if (length < 5) |
| return false; |
| return characters[4] == '(' |
| && isASCIIAlphaCaselessEqual(characters[0], 'r') |
| && isASCIIAlphaCaselessEqual(characters[1], 'g') |
| && isASCIIAlphaCaselessEqual(characters[2], 'b') |
| && isASCIIAlphaCaselessEqual(characters[3], 'a'); |
| } |
| |
| template <typename CharacterType> |
| static inline bool mightBeRGB(const CharacterType* characters, unsigned length) |
| { |
| if (length < 4) |
| return false; |
| return characters[3] == '(' |
| && isASCIIAlphaCaselessEqual(characters[0], 'r') |
| && isASCIIAlphaCaselessEqual(characters[1], 'g') |
| && isASCIIAlphaCaselessEqual(characters[2], 'b'); |
| } |
| |
| template <typename CharacterType> |
| static bool fastParseColorInternal(RGBA32& rgb, const CharacterType* characters, unsigned length, bool quirksMode) |
| { |
| CSSPrimitiveValue::UnitType expect = CSSPrimitiveValue::UnitType::Unknown; |
| |
| if (length >= 4 && characters[0] == '#') |
| return Color::parseHexColor(characters + 1, length - 1, rgb); |
| |
| if (quirksMode && length >= 3) { |
| if (Color::parseHexColor(characters, length, rgb)) |
| return true; |
| } |
| |
| // Try rgba() syntax. |
| if (mightBeRGBA(characters, length)) { |
| const CharacterType* current = characters + 5; |
| const CharacterType* end = characters + length; |
| int red; |
| int green; |
| int blue; |
| int alpha; |
| |
| if (!parseColorIntOrPercentage(current, end, ',', expect, red)) |
| return false; |
| if (!parseColorIntOrPercentage(current, end, ',', expect, green)) |
| return false; |
| if (!parseColorIntOrPercentage(current, end, ',', expect, blue)) |
| return false; |
| if (!parseAlphaValue(current, end, ')', alpha)) |
| return false; |
| if (current != end) |
| return false; |
| rgb = makeRGBA(red, green, blue, alpha); |
| return true; |
| } |
| |
| // Try rgb() syntax. |
| if (mightBeRGB(characters, length)) { |
| const CharacterType* current = characters + 4; |
| const CharacterType* end = characters + length; |
| int red; |
| int green; |
| int blue; |
| if (!parseColorIntOrPercentage(current, end, ',', expect, red)) |
| return false; |
| if (!parseColorIntOrPercentage(current, end, ',', expect, green)) |
| return false; |
| if (!parseColorIntOrPercentage(current, end, ')', expect, blue)) |
| return false; |
| if (current != end) |
| return false; |
| rgb = makeRGB(red, green, blue); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserMode parserMode) |
| { |
| ASSERT(!string.isEmpty()); |
| CSSParserString cssString; |
| cssString.init(string); |
| CSSValueID valueID = cssValueKeywordID(cssString); |
| if (CSSPropertyParser::isColorKeyword(valueID)) { |
| if (!isValueAllowedInMode(valueID, parserMode)) |
| return nullptr; |
| return cssValuePool().createIdentifierValue(valueID); |
| } |
| |
| RGBA32 color; |
| bool quirksMode = isQuirksModeBehavior(parserMode); |
| |
| // Fast path for hex colors and rgb()/rgba() colors |
| bool parseResult; |
| if (string.is8Bit()) |
| parseResult = fastParseColorInternal(color, string.characters8(), string.length(), quirksMode); |
| else |
| parseResult = fastParseColorInternal(color, string.characters16(), string.length(), quirksMode); |
| if (!parseResult) |
| return nullptr; |
| return cssValuePool().createColorValue(color); |
| } |
| |
| bool CSSParserFastPaths::isValidKeywordPropertyAndValue(CSSPropertyID propertyId, CSSValueID valueID) |
| { |
| if (valueID == CSSValueInvalid) |
| return false; |
| |
| switch (propertyId) { |
| case CSSPropertyAlignmentBaseline: |
| // auto | baseline | before-edge | text-before-edge | middle | |
| // central | after-edge | text-after-edge | ideographic | alphabetic | |
| // hanging | mathematical |
| return valueID == CSSValueAuto || valueID == CSSValueBaseline || valueID == CSSValueMiddle |
| || (valueID >= CSSValueBeforeEdge && valueID <= CSSValueMathematical); |
| case CSSPropertyAll: |
| return false; // Only accepts css-wide keywords |
| case CSSPropertyBackgroundRepeatX: // repeat | no-repeat |
| case CSSPropertyBackgroundRepeatY: // repeat | no-repeat |
| return valueID == CSSValueRepeat || valueID == CSSValueNoRepeat; |
| case CSSPropertyBorderCollapse: // collapse | separate |
| return valueID == CSSValueCollapse || valueID == CSSValueSeparate; |
| case CSSPropertyBorderTopStyle: // <border-style> |
| case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | dashed | |
| case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inset | outset |
| case CSSPropertyBorderLeftStyle: |
| case CSSPropertyWebkitBorderAfterStyle: |
| case CSSPropertyWebkitBorderBeforeStyle: |
| case CSSPropertyWebkitBorderEndStyle: |
| case CSSPropertyWebkitBorderStartStyle: |
| case CSSPropertyWebkitColumnRuleStyle: |
| return valueID >= CSSValueNone && valueID <= CSSValueDouble; |
| case CSSPropertyBoxSizing: |
| return valueID == CSSValueBorderBox || valueID == CSSValueContentBox; |
| case CSSPropertyBufferedRendering: |
| return valueID == CSSValueAuto || valueID == CSSValueDynamic || valueID == CSSValueStatic; |
| case CSSPropertyCaptionSide: // top | bottom | left | right |
| return valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueTop || valueID == CSSValueBottom; |
| case CSSPropertyClear: // none | left | right | both |
| return valueID == CSSValueNone || valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueBoth; |
| case CSSPropertyClipRule: |
| case CSSPropertyFillRule: |
| return valueID == CSSValueNonzero || valueID == CSSValueEvenodd; |
| case CSSPropertyColorInterpolation: |
| case CSSPropertyColorInterpolationFilters: |
| return valueID == CSSValueAuto || valueID == CSSValueSRGB || valueID == CSSValueLinearRGB; |
| case CSSPropertyColorRendering: |
| return valueID == CSSValueAuto || valueID == CSSValueOptimizeSpeed || valueID == CSSValueOptimizeQuality; |
| case CSSPropertyDirection: // ltr | rtl |
| return valueID == CSSValueLtr || valueID == CSSValueRtl; |
| case CSSPropertyDisplay: |
| // inline | block | list-item | inline-block | table | |
| // inline-table | table-row-group | table-header-group | table-footer-group | table-row | |
| // table-column-group | table-column | table-cell | table-caption | -webkit-box | -webkit-inline-box | none |
| // flex | inline-flex | -webkit-flex | -webkit-inline-flex | grid | inline-grid |
| return (valueID >= CSSValueInline && valueID <= CSSValueInlineFlex) || valueID == CSSValueWebkitFlex || valueID == CSSValueWebkitInlineFlex || valueID == CSSValueNone |
| || (RuntimeEnabledFeatures::cssGridLayoutEnabled() && (valueID == CSSValueGrid || valueID == CSSValueInlineGrid)); |
| case CSSPropertyDominantBaseline: |
| // auto | use-script | no-change | reset-size | ideographic | |
| // alphabetic | hanging | mathematical | central | middle | |
| // text-after-edge | text-before-edge |
| return valueID == CSSValueAuto || valueID == CSSValueMiddle |
| || (valueID >= CSSValueUseScript && valueID <= CSSValueResetSize) |
| || (valueID >= CSSValueCentral && valueID <= CSSValueMathematical); |
| case CSSPropertyEmptyCells: // show | hide |
| return valueID == CSSValueShow || valueID == CSSValueHide; |
| case CSSPropertyFloat: // left | right | none |
| return valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueNone; |
| case CSSPropertyFontDisplay: // auto | block | swap | fallback | optional |
| return valueID == CSSValueAuto || valueID == CSSValueBlock || valueID == CSSValueSwap || valueID == CSSValueFallback || valueID == CSSValueOptional; |
| case CSSPropertyFontStyle: // normal | italic | oblique |
| return valueID == CSSValueNormal || valueID == CSSValueItalic || valueID == CSSValueOblique; |
| case CSSPropertyFontStretch: // normal | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded |
| return valueID == CSSValueNormal || (valueID >= CSSValueUltraCondensed && valueID <= CSSValueUltraExpanded); |
| case CSSPropertyImageRendering: // auto | optimizeContrast | pixelated |
| return valueID == CSSValueAuto || valueID == CSSValueWebkitOptimizeContrast || (RuntimeEnabledFeatures::imageRenderingPixelatedEnabled() && valueID == CSSValuePixelated); |
| case CSSPropertyIsolation: // auto | isolate |
| ASSERT(RuntimeEnabledFeatures::cssCompositingEnabled()); |
| return valueID == CSSValueAuto || valueID == CSSValueIsolate; |
| case CSSPropertyListStylePosition: // inside | outside |
| return valueID == CSSValueInside || valueID == CSSValueOutside; |
| case CSSPropertyListStyleType: |
| // See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in |
| // for the list of supported list-style-types. |
| return (valueID >= CSSValueDisc && valueID <= CSSValueKatakanaIroha) || valueID == CSSValueNone; |
| case CSSPropertyMaskType: |
| return valueID == CSSValueLuminance || valueID == CSSValueAlpha; |
| case CSSPropertyObjectFit: |
| return valueID == CSSValueFill || valueID == CSSValueContain || valueID == CSSValueCover || valueID == CSSValueNone || valueID == CSSValueScaleDown; |
| case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto |
| return valueID == CSSValueAuto || valueID == CSSValueNone || (valueID >= CSSValueInset && valueID <= CSSValueDouble); |
| case CSSPropertyOverflowWrap: // normal | break-word |
| case CSSPropertyWordWrap: |
| return valueID == CSSValueNormal || valueID == CSSValueBreakWord; |
| case CSSPropertyOverflowX: // visible | hidden | scroll | auto | overlay |
| return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay; |
| case CSSPropertyOverflowY: // visible | hidden | scroll | auto | overlay | -webkit-paged-x | -webkit-paged-y |
| return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay || valueID == CSSValueWebkitPagedX || valueID == CSSValueWebkitPagedY; |
| case CSSPropertyBreakAfter: |
| case CSSPropertyBreakBefore: |
| return valueID == CSSValueAuto || valueID == CSSValueAvoid || valueID == CSSValueAvoidPage || valueID == CSSValuePage || valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueRecto || valueID == CSSValueVerso || valueID == CSSValueAvoidColumn || valueID == CSSValueColumn; |
| case CSSPropertyBreakInside: |
| return valueID == CSSValueAuto || valueID == CSSValueAvoid || valueID == CSSValueAvoidPage || valueID == CSSValueAvoidColumn; |
| case CSSPropertyPointerEvents: |
| // none | visiblePainted | visibleFill | visibleStroke | visible | |
| // painted | fill | stroke | auto | all | bounding-box |
| return valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAll || valueID == CSSValueAuto || (valueID >= CSSValueVisiblePainted && valueID <= CSSValueBoundingBox); |
| case CSSPropertyPosition: // static | relative | absolute | fixed | sticky |
| return valueID == CSSValueStatic || valueID == CSSValueRelative || valueID == CSSValueAbsolute || valueID == CSSValueFixed || (RuntimeEnabledFeatures::cssStickyPositionEnabled() && valueID == CSSValueSticky); |
| case CSSPropertyResize: // none | both | horizontal | vertical | auto |
| return valueID == CSSValueNone || valueID == CSSValueBoth || valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueAuto; |
| case CSSPropertyScrollBehavior: // auto | smooth |
| ASSERT(RuntimeEnabledFeatures::cssomSmoothScrollEnabled()); |
| return valueID == CSSValueAuto || valueID == CSSValueSmooth; |
| case CSSPropertyShapeRendering: |
| return valueID == CSSValueAuto || valueID == CSSValueOptimizeSpeed || valueID == CSSValueCrispEdges || valueID == CSSValueGeometricPrecision; |
| case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punctuation | no-punctuation |
| return valueID == CSSValueNone || valueID == CSSValueNormal || valueID == CSSValueSpellOut || valueID == CSSValueDigits || valueID == CSSValueLiteralPunctuation || valueID == CSSValueNoPunctuation; |
| case CSSPropertyStrokeLinejoin: |
| return valueID == CSSValueMiter || valueID == CSSValueRound || valueID == CSSValueBevel; |
| case CSSPropertyStrokeLinecap: |
| return valueID == CSSValueButt || valueID == CSSValueRound || valueID == CSSValueSquare; |
| case CSSPropertyTableLayout: // auto | fixed |
| return valueID == CSSValueAuto || valueID == CSSValueFixed; |
| case CSSPropertyTextAlign: |
| return (valueID >= CSSValueWebkitAuto && valueID <= CSSValueWebkitMatchParent) || valueID == CSSValueStart || valueID == CSSValueEnd; |
| case CSSPropertyTextAlignLast: |
| // auto | start | end | left | right | center | justify |
| return (valueID >= CSSValueLeft && valueID <= CSSValueJustify) || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueAuto; |
| case CSSPropertyTextAnchor: |
| return valueID == CSSValueStart || valueID == CSSValueMiddle || valueID == CSSValueEnd; |
| case CSSPropertyTextCombineUpright: |
| return valueID == CSSValueNone || valueID == CSSValueAll; |
| case CSSPropertyTextDecorationStyle: |
| // solid | double | dotted | dashed | wavy |
| ASSERT(RuntimeEnabledFeatures::css3TextDecorationsEnabled()); |
| return valueID == CSSValueSolid || valueID == CSSValueDouble || valueID == CSSValueDotted || valueID == CSSValueDashed || valueID == CSSValueWavy; |
| case CSSPropertyTextJustify: |
| // auto | none | inter-word | distribute |
| ASSERT(RuntimeEnabledFeatures::css3TextEnabled()); |
| return valueID == CSSValueInterWord || valueID == CSSValueDistribute || valueID == CSSValueAuto || valueID == CSSValueNone; |
| case CSSPropertyTextOrientation: // mixed | upright | sideways | sideways-right |
| return valueID == CSSValueMixed || valueID == CSSValueUpright || valueID == CSSValueSideways || valueID == CSSValueSidewaysRight; |
| case CSSPropertyWebkitTextOrientation: |
| return valueID == CSSValueSideways || valueID == CSSValueSidewaysRight || valueID == CSSValueVerticalRight || valueID == CSSValueUpright; |
| case CSSPropertyTextOverflow: // clip | ellipsis |
| return valueID == CSSValueClip || valueID == CSSValueEllipsis; |
| case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision |
| return valueID == CSSValueAuto || valueID == CSSValueOptimizeSpeed || valueID == CSSValueOptimizeLegibility || valueID == CSSValueGeometricPrecision; |
| case CSSPropertyTextTransform: // capitalize | uppercase | lowercase | none |
| return (valueID >= CSSValueCapitalize && valueID <= CSSValueLowercase) || valueID == CSSValueNone; |
| case CSSPropertyUnicodeBidi: |
| return valueID == CSSValueNormal || valueID == CSSValueEmbed |
| || valueID == CSSValueBidiOverride || valueID == CSSValueWebkitIsolate |
| || valueID == CSSValueWebkitIsolateOverride || valueID == CSSValueWebkitPlaintext |
| || valueID == CSSValueIsolate || valueID == CSSValueIsolateOverride || valueID == CSSValuePlaintext; |
| case CSSPropertyVectorEffect: |
| return valueID == CSSValueNone || valueID == CSSValueNonScalingStroke; |
| case CSSPropertyVisibility: // visible | hidden | collapse |
| return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueCollapse; |
| case CSSPropertyWebkitAppRegion: |
| return valueID >= CSSValueDrag && valueID <= CSSValueNoDrag; |
| case CSSPropertyWebkitAppearance: |
| return (valueID >= CSSValueCheckbox && valueID <= CSSValueTextarea) || valueID == CSSValueNone; |
| case CSSPropertyBackfaceVisibility: |
| return valueID == CSSValueVisible || valueID == CSSValueHidden; |
| case CSSPropertyMixBlendMode: |
| ASSERT(RuntimeEnabledFeatures::cssCompositingEnabled()); |
| return valueID == CSSValueNormal || valueID == CSSValueMultiply || valueID == CSSValueScreen || valueID == CSSValueOverlay |
| || valueID == CSSValueDarken || valueID == CSSValueLighten || valueID == CSSValueColorDodge || valueID == CSSValueColorBurn |
| || valueID == CSSValueHardLight || valueID == CSSValueSoftLight || valueID == CSSValueDifference || valueID == CSSValueExclusion |
| || valueID == CSSValueHue || valueID == CSSValueSaturation || valueID == CSSValueColor || valueID == CSSValueLuminosity; |
| case CSSPropertyWebkitBoxAlign: |
| return valueID == CSSValueStretch || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline; |
| case CSSPropertyWebkitBoxDecorationBreak: |
| return valueID == CSSValueClone || valueID == CSSValueSlice; |
| case CSSPropertyWebkitBoxDirection: |
| return valueID == CSSValueNormal || valueID == CSSValueReverse; |
| case CSSPropertyWebkitBoxLines: |
| return valueID == CSSValueSingle || valueID == CSSValueMultiple; |
| case CSSPropertyWebkitBoxOrient: |
| return valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueInlineAxis || valueID == CSSValueBlockAxis; |
| case CSSPropertyWebkitBoxPack: |
| return valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueCenter || valueID == CSSValueJustify; |
| case CSSPropertyColumnFill: |
| ASSERT(RuntimeEnabledFeatures::columnFillEnabled()); |
| return valueID == CSSValueAuto || valueID == CSSValueBalance; |
| case CSSPropertyAlignContent: |
| // FIXME: Per CSS alignment, this property should accept an optional <overflow-position>. We should share this parsing code with 'justify-self'. |
| return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpaceAround || valueID == CSSValueStretch; |
| case CSSPropertyAlignItems: |
| // FIXME: Per CSS alignment, this property should accept the same arguments as 'justify-self' so we should share its parsing code. |
| return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch; |
| case CSSPropertyAlignSelf: |
| // FIXME: Per CSS alignment, this property should accept the same arguments as 'justify-self' so we should share its parsing code. |
| return valueID == CSSValueAuto || valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch; |
| case CSSPropertyFlexDirection: |
| return valueID == CSSValueRow || valueID == CSSValueRowReverse || valueID == CSSValueColumn || valueID == CSSValueColumnReverse; |
| case CSSPropertyFlexWrap: |
| return valueID == CSSValueNowrap || valueID == CSSValueWrap || valueID == CSSValueWrapReverse; |
| case CSSPropertyJustifyContent: |
| // FIXME: Per CSS alignment, this property should accept an optional <overflow-position>. We should share this parsing code with 'justify-self'. |
| return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpaceAround; |
| case CSSPropertyFontKerning: |
| return valueID == CSSValueAuto || valueID == CSSValueNormal || valueID == CSSValueNone; |
| case CSSPropertyWebkitFontSmoothing: |
| return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueAntialiased || valueID == CSSValueSubpixelAntialiased; |
| case CSSPropertyWebkitLineBreak: // auto | loose | normal | strict | after-white-space |
| return valueID == CSSValueAuto || valueID == CSSValueLoose || valueID == CSSValueNormal || valueID == CSSValueStrict || valueID == CSSValueAfterWhiteSpace; |
| case CSSPropertyWebkitMarginAfterCollapse: |
| case CSSPropertyWebkitMarginBeforeCollapse: |
| case CSSPropertyWebkitMarginBottomCollapse: |
| case CSSPropertyWebkitMarginTopCollapse: |
| return valueID == CSSValueCollapse || valueID == CSSValueSeparate || valueID == CSSValueDiscard; |
| case CSSPropertyWebkitPrintColorAdjust: |
| return valueID == CSSValueExact || valueID == CSSValueEconomy; |
| case CSSPropertyWebkitRtlOrdering: |
| return valueID == CSSValueLogical || valueID == CSSValueVisual; |
| case CSSPropertyWebkitRubyPosition: |
| return valueID == CSSValueBefore || valueID == CSSValueAfter; |
| case CSSPropertyWebkitTextCombine: |
| return valueID == CSSValueNone || valueID == CSSValueHorizontal; |
| case CSSPropertyWebkitTextEmphasisPosition: |
| return valueID == CSSValueOver || valueID == CSSValueUnder; |
| case CSSPropertyWebkitTextSecurity: // disc | circle | square | none |
| return valueID == CSSValueDisc || valueID == CSSValueCircle || valueID == CSSValueSquare || valueID == CSSValueNone; |
| case CSSPropertyTransformStyle: |
| return valueID == CSSValueFlat || valueID == CSSValuePreserve3d; |
| case CSSPropertyWebkitUserDrag: // auto | none | element |
| return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueElement; |
| case CSSPropertyWebkitUserModify: // read-only | read-write |
| return valueID == CSSValueReadOnly || valueID == CSSValueReadWrite || valueID == CSSValueReadWritePlaintextOnly; |
| case CSSPropertyWebkitUserSelect: // auto | none | text | all |
| return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueText || valueID == CSSValueAll; |
| case CSSPropertyWebkitWritingMode: |
| return valueID >= CSSValueHorizontalTb && valueID <= CSSValueVerticalLr; |
| case CSSPropertyWritingMode: |
| return valueID == CSSValueHorizontalTb |
| || valueID == CSSValueVerticalRl || valueID == CSSValueVerticalLr |
| || valueID == CSSValueLrTb || valueID == CSSValueRlTb || valueID == CSSValueTbRl |
| || valueID == CSSValueLr || valueID == CSSValueRl || valueID == CSSValueTb; |
| case CSSPropertyWhiteSpace: // normal | pre | nowrap |
| return valueID == CSSValueNormal || valueID == CSSValuePre || valueID == CSSValuePreWrap || valueID == CSSValuePreLine || valueID == CSSValueNowrap; |
| case CSSPropertyWordBreak: // normal | break-all | keep-all | break-word (this is a custom extension) |
| return valueID == CSSValueNormal || valueID == CSSValueBreakAll || valueID == CSSValueKeepAll || valueID == CSSValueBreakWord; |
| case CSSPropertyScrollSnapType: // none | mandatory | proximity |
| ASSERT(RuntimeEnabledFeatures::cssScrollSnapPointsEnabled()); |
| return valueID == CSSValueNone || valueID == CSSValueMandatory || valueID == CSSValueProximity; |
| default: |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| } |
| |
| bool CSSParserFastPaths::isKeywordPropertyID(CSSPropertyID propertyId) |
| { |
| switch (propertyId) { |
| case CSSPropertyAlignmentBaseline: |
| case CSSPropertyAll: |
| case CSSPropertyMixBlendMode: |
| case CSSPropertyIsolation: |
| case CSSPropertyBackgroundRepeatX: |
| case CSSPropertyBackgroundRepeatY: |
| case CSSPropertyBorderBottomStyle: |
| case CSSPropertyBorderCollapse: |
| case CSSPropertyBorderLeftStyle: |
| case CSSPropertyBorderRightStyle: |
| case CSSPropertyBorderTopStyle: |
| case CSSPropertyBoxSizing: |
| case CSSPropertyBufferedRendering: |
| case CSSPropertyCaptionSide: |
| case CSSPropertyClear: |
| case CSSPropertyClipRule: |
| case CSSPropertyColorInterpolation: |
| case CSSPropertyColorInterpolationFilters: |
| case CSSPropertyColorRendering: |
| case CSSPropertyDirection: |
| case CSSPropertyDisplay: |
| case CSSPropertyDominantBaseline: |
| case CSSPropertyEmptyCells: |
| case CSSPropertyFillRule: |
| case CSSPropertyFloat: |
| case CSSPropertyFontStyle: |
| case CSSPropertyFontStretch: |
| case CSSPropertyImageRendering: |
| case CSSPropertyListStylePosition: |
| case CSSPropertyListStyleType: |
| case CSSPropertyMaskType: |
| case CSSPropertyObjectFit: |
| case CSSPropertyOutlineStyle: |
| case CSSPropertyOverflowWrap: |
| case CSSPropertyOverflowX: |
| case CSSPropertyOverflowY: |
| case CSSPropertyBreakAfter: |
| case CSSPropertyBreakBefore: |
| case CSSPropertyBreakInside: |
| case CSSPropertyPointerEvents: |
| case CSSPropertyPosition: |
| case CSSPropertyResize: |
| case CSSPropertyScrollBehavior: |
| case CSSPropertyShapeRendering: |
| case CSSPropertySpeak: |
| case CSSPropertyStrokeLinecap: |
| case CSSPropertyStrokeLinejoin: |
| case CSSPropertyTableLayout: |
| case CSSPropertyTextAlign: |
| case CSSPropertyTextAlignLast: |
| case CSSPropertyTextAnchor: |
| case CSSPropertyTextCombineUpright: |
| case CSSPropertyTextDecorationStyle: |
| case CSSPropertyTextJustify: |
| case CSSPropertyTextOrientation: |
| case CSSPropertyWebkitTextOrientation: |
| case CSSPropertyTextOverflow: |
| case CSSPropertyTextRendering: |
| case CSSPropertyTextTransform: |
| case CSSPropertyUnicodeBidi: |
| case CSSPropertyVectorEffect: |
| case CSSPropertyVisibility: |
| case CSSPropertyWebkitAppRegion: |
| case CSSPropertyWebkitAppearance: |
| case CSSPropertyBackfaceVisibility: |
| case CSSPropertyWebkitBorderAfterStyle: |
| case CSSPropertyWebkitBorderBeforeStyle: |
| case CSSPropertyWebkitBorderEndStyle: |
| case CSSPropertyWebkitBorderStartStyle: |
| case CSSPropertyWebkitBoxAlign: |
| case CSSPropertyWebkitBoxDecorationBreak: |
| case CSSPropertyWebkitBoxDirection: |
| case CSSPropertyWebkitBoxLines: |
| case CSSPropertyWebkitBoxOrient: |
| case CSSPropertyWebkitBoxPack: |
| case CSSPropertyColumnFill: |
| case CSSPropertyWebkitColumnRuleStyle: |
| case CSSPropertyFlexDirection: |
| case CSSPropertyFlexWrap: |
| case CSSPropertyFontKerning: |
| case CSSPropertyWebkitFontSmoothing: |
| case CSSPropertyWebkitLineBreak: |
| case CSSPropertyWebkitMarginAfterCollapse: |
| case CSSPropertyWebkitMarginBeforeCollapse: |
| case CSSPropertyWebkitMarginBottomCollapse: |
| case CSSPropertyWebkitMarginTopCollapse: |
| case CSSPropertyWebkitPrintColorAdjust: |
| case CSSPropertyWebkitRtlOrdering: |
| case CSSPropertyWebkitRubyPosition: |
| case CSSPropertyWebkitTextCombine: |
| case CSSPropertyWebkitTextEmphasisPosition: |
| case CSSPropertyWebkitTextSecurity: |
| case CSSPropertyTransformStyle: |
| case CSSPropertyWebkitUserDrag: |
| case CSSPropertyWebkitUserModify: |
| case CSSPropertyWebkitUserSelect: |
| case CSSPropertyWebkitWritingMode: |
| case CSSPropertyWhiteSpace: |
| case CSSPropertyWordBreak: |
| case CSSPropertyWordWrap: |
| case CSSPropertyWritingMode: |
| case CSSPropertyScrollSnapType: |
| return true; |
| case CSSPropertyJustifyContent: |
| case CSSPropertyAlignContent: |
| case CSSPropertyAlignItems: |
| case CSSPropertyAlignSelf: |
| return !RuntimeEnabledFeatures::cssGridLayoutEnabled(); |
| default: |
| return false; |
| } |
| } |
| |
| static PassRefPtrWillBeRawPtr<CSSValue> parseKeywordValue(CSSPropertyID propertyId, const String& string) |
| { |
| ASSERT(!string.isEmpty()); |
| |
| if (!CSSParserFastPaths::isKeywordPropertyID(propertyId)) { |
| // All properties accept the values of "initial" and "inherit". |
| String lowerCaseString = string.lower(); |
| if (lowerCaseString != "initial" && lowerCaseString != "inherit") |
| return nullptr; |
| |
| // Parse initial/inherit shorthands using the CSSPropertyParser. |
| if (shorthandForProperty(propertyId).length()) |
| return nullptr; |
| } |
| |
| CSSParserString cssString; |
| cssString.init(string); |
| CSSValueID valueID = cssValueKeywordID(cssString); |
| |
| if (!valueID) |
| return nullptr; |
| |
| if (valueID == CSSValueInherit) |
| return cssValuePool().createInheritedValue(); |
| if (valueID == CSSValueInitial) |
| return cssValuePool().createExplicitInitialValue(); |
| if (CSSParserFastPaths::isValidKeywordPropertyAndValue(propertyId, valueID)) |
| return cssValuePool().createIdentifierValue(valueID); |
| return nullptr; |
| } |
| |
| template <typename CharType> |
| static bool parseTransformTranslateArguments(CharType*& pos, CharType* end, unsigned expectedCount, CSSFunctionValue* transformValue) |
| { |
| while (expectedCount) { |
| size_t delimiter = WTF::find(pos, end - pos, expectedCount == 1 ? ')' : ','); |
| if (delimiter == kNotFound) |
| return false; |
| unsigned argumentLength = static_cast<unsigned>(delimiter); |
| CSSPrimitiveValue::UnitType unit = CSSPrimitiveValue::UnitType::Number; |
| double number; |
| if (!parseSimpleLength(pos, argumentLength, unit, number)) |
| return false; |
| if (unit != CSSPrimitiveValue::UnitType::Pixels && (number || unit != CSSPrimitiveValue::UnitType::Number)) |
| return false; |
| transformValue->append(cssValuePool().createValue(number, CSSPrimitiveValue::UnitType::Pixels)); |
| pos += argumentLength + 1; |
| --expectedCount; |
| } |
| return true; |
| } |
| |
| template <typename CharType> |
| static bool parseTransformNumberArguments(CharType*& pos, CharType* end, unsigned expectedCount, CSSFunctionValue* transformValue) |
| { |
| while (expectedCount) { |
| size_t delimiter = WTF::find(pos, end - pos, expectedCount == 1 ? ')' : ','); |
| if (delimiter == kNotFound) |
| return false; |
| unsigned argumentLength = static_cast<unsigned>(delimiter); |
| bool ok; |
| double number = charactersToDouble(pos, argumentLength, &ok); |
| if (!ok) |
| return false; |
| transformValue->append(cssValuePool().createValue(number, CSSPrimitiveValue::UnitType::Number)); |
| pos += argumentLength + 1; |
| --expectedCount; |
| } |
| return true; |
| } |
| |
| template <typename CharType> |
| static PassRefPtrWillBeRawPtr<CSSFunctionValue> parseSimpleTransformValue(CharType*& pos, CharType* end) |
| { |
| static const int shortestValidTransformStringLength = 12; |
| |
| if (end - pos < shortestValidTransformStringLength) |
| return nullptr; |
| |
| const bool isTranslate = toASCIILower(pos[0]) == 't' |
| && toASCIILower(pos[1]) == 'r' |
| && toASCIILower(pos[2]) == 'a' |
| && toASCIILower(pos[3]) == 'n' |
| && toASCIILower(pos[4]) == 's' |
| && toASCIILower(pos[5]) == 'l' |
| && toASCIILower(pos[6]) == 'a' |
| && toASCIILower(pos[7]) == 't' |
| && toASCIILower(pos[8]) == 'e'; |
| |
| if (isTranslate) { |
| CSSValueID transformType; |
| unsigned expectedArgumentCount = 1; |
| unsigned argumentStart = 11; |
| CharType c9 = toASCIILower(pos[9]); |
| if (c9 == 'x' && pos[10] == '(') { |
| transformType = CSSValueTranslateX; |
| } else if (c9 == 'y' && pos[10] == '(') { |
| transformType = CSSValueTranslateY; |
| } else if (c9 == 'z' && pos[10] == '(') { |
| transformType = CSSValueTranslateZ; |
| } else if (c9 == '(') { |
| transformType = CSSValueTranslate; |
| expectedArgumentCount = 2; |
| argumentStart = 10; |
| } else if (c9 == '3' && toASCIILower(pos[10]) == 'd' && pos[11] == '(') { |
| transformType = CSSValueTranslate3d; |
| expectedArgumentCount = 3; |
| argumentStart = 12; |
| } else { |
| return nullptr; |
| } |
| pos += argumentStart; |
| RefPtrWillBeRawPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(transformType); |
| if (!parseTransformTranslateArguments(pos, end, expectedArgumentCount, transformValue.get())) |
| return nullptr; |
| return transformValue.release(); |
| } |
| |
| const bool isMatrix3d = toASCIILower(pos[0]) == 'm' |
| && toASCIILower(pos[1]) == 'a' |
| && toASCIILower(pos[2]) == 't' |
| && toASCIILower(pos[3]) == 'r' |
| && toASCIILower(pos[4]) == 'i' |
| && toASCIILower(pos[5]) == 'x' |
| && pos[6] == '3' |
| && toASCIILower(pos[7]) == 'd' |
| && pos[8] == '('; |
| |
| if (isMatrix3d) { |
| pos += 9; |
| RefPtrWillBeRawPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(CSSValueMatrix3d); |
| if (!parseTransformNumberArguments(pos, end, 16, transformValue.get())) |
| return nullptr; |
| return transformValue.release(); |
| } |
| |
| const bool isScale3d = toASCIILower(pos[0]) == 's' |
| && toASCIILower(pos[1]) == 'c' |
| && toASCIILower(pos[2]) == 'a' |
| && toASCIILower(pos[3]) == 'l' |
| && toASCIILower(pos[4]) == 'e' |
| && pos[5] == '3' |
| && toASCIILower(pos[6]) == 'd' |
| && pos[7] == '('; |
| |
| if (isScale3d) { |
| pos += 8; |
| RefPtrWillBeRawPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(CSSValueScale3d); |
| if (!parseTransformNumberArguments(pos, end, 3, transformValue.get())) |
| return nullptr; |
| return transformValue.release(); |
| } |
| |
| return nullptr; |
| } |
| |
| template <typename CharType> |
| static PassRefPtrWillBeRawPtr<CSSValueList> parseSimpleTransformList(CharType*& pos, CharType* end) |
| { |
| RefPtrWillBeRawPtr<CSSValueList> transformList = nullptr; |
| while (pos < end) { |
| while (pos < end && isCSSSpace(*pos)) |
| ++pos; |
| RefPtrWillBeRawPtr<CSSFunctionValue> transformValue = parseSimpleTransformValue(pos, end); |
| if (!transformValue) |
| return nullptr; |
| if (!transformList) |
| transformList = CSSValueList::createSpaceSeparated(); |
| transformList->append(transformValue.release()); |
| if (pos < end) { |
| if (isCSSSpace(*pos)) |
| return nullptr; |
| } |
| } |
| return transformList.release(); |
| } |
| |
| static PassRefPtrWillBeRawPtr<CSSValue> parseSimpleTransform(CSSPropertyID propertyID, const String& string) |
| { |
| ASSERT(!string.isEmpty()); |
| |
| if (propertyID != CSSPropertyTransform) |
| return nullptr; |
| if (string.is8Bit()) { |
| const LChar* pos = string.characters8(); |
| const LChar* end = pos + string.length(); |
| return parseSimpleTransformList(pos, end); |
| } |
| const UChar* pos = string.characters16(); |
| const UChar* end = pos + string.length(); |
| return parseSimpleTransformList(pos, end); |
| } |
| |
| PassRefPtrWillBeRawPtr<CSSValue> CSSParserFastPaths::maybeParseValue(CSSPropertyID propertyID, const String& string, CSSParserMode parserMode) |
| { |
| if (RefPtrWillBeRawPtr<CSSValue> length = parseSimpleLengthValue(propertyID, string, parserMode)) |
| return length.release(); |
| if (isColorPropertyID(propertyID)) |
| return parseColor(string, parserMode); |
| if (RefPtrWillBeRawPtr<CSSValue> keyword = parseKeywordValue(propertyID, string)) |
| return keyword.release(); |
| if (RefPtrWillBeRawPtr<CSSValue> transform = parseSimpleTransform(propertyID, string)) |
| return transform.release(); |
| return nullptr; |
| } |
| |
| } // namespace blink |
