| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Copyright (C) 2016-2018 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 "CSSParserFastPaths.h" |
| |
| #include "CSSFunctionValue.h" |
| #include "CSSParserContext.h" |
| #include "CSSParserIdioms.h" |
| #include "CSSPrimitiveValue.h" |
| #include "CSSPropertyParser.h" |
| #include "CSSValueList.h" |
| #include "CSSValuePool.h" |
| #include "HTMLParserIdioms.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "StyleColor.h" |
| #include "StylePropertyShorthand.h" |
| |
| namespace WebCore { |
| |
| static inline bool isSimpleLengthPropertyID(CSSPropertyID propertyId, bool& acceptsNegativeNumbers) |
| { |
| switch (propertyId) { |
| case CSSPropertyFontSize: |
| case CSSPropertyHeight: |
| case CSSPropertyWidth: |
| case CSSPropertyMinHeight: |
| case CSSPropertyMinWidth: |
| case CSSPropertyPaddingBottom: |
| case CSSPropertyPaddingLeft: |
| case CSSPropertyPaddingRight: |
| case CSSPropertyPaddingTop: |
| case CSSPropertyInlineSize: |
| case CSSPropertyBlockSize: |
| case CSSPropertyMinInlineSize: |
| case CSSPropertyMinBlockSize: |
| case CSSPropertyPaddingBlockEnd: |
| case CSSPropertyPaddingBlockStart: |
| case CSSPropertyPaddingInlineEnd: |
| case CSSPropertyPaddingInlineStart: |
| case CSSPropertyR: |
| case CSSPropertyRx: |
| case CSSPropertyRy: |
| case CSSPropertyShapeMargin: |
| acceptsNegativeNumbers = false; |
| return true; |
| case CSSPropertyBottom: |
| case CSSPropertyCx: |
| case CSSPropertyCy: |
| case CSSPropertyLeft: |
| case CSSPropertyInsetBlockEnd: |
| case CSSPropertyInsetBlockStart: |
| case CSSPropertyInsetInlineEnd: |
| case CSSPropertyInsetInlineStart: |
| case CSSPropertyMarginBottom: |
| case CSSPropertyMarginLeft: |
| case CSSPropertyMarginRight: |
| case CSSPropertyMarginTop: |
| case CSSPropertyRight: |
| case CSSPropertyTop: |
| case CSSPropertyMarginBlockEnd: |
| case CSSPropertyMarginBlockStart: |
| case CSSPropertyMarginInlineEnd: |
| case CSSPropertyMarginInlineStart: |
| case CSSPropertyX: |
| case CSSPropertyY: |
| acceptsNegativeNumbers = true; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| template <typename CharacterType> |
| static inline bool parseSimpleLength(const CharacterType* characters, unsigned length, CSSUnitType& unit, double& number) |
| { |
| if (length > 2 && (characters[length - 2] | 0x20) == 'p' && (characters[length - 1] | 0x20) == 'x') { |
| length -= 2; |
| unit = CSSUnitType::CSS_PX; |
| } else if (length > 1 && characters[length - 1] == '%') { |
| length -= 1; |
| unit = CSSUnitType::CSS_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); |
| if (!ok) |
| return false; |
| return true; |
| } |
| |
| template <typename CharacterType> |
| static inline bool parseSimpleAngle(const CharacterType* characters, unsigned length, CSSUnitType& unit, double& number) |
| { |
| // Just support deg and rad for now. |
| if (length < 4) |
| return false; |
| |
| if ((characters[length - 3] | 0x20) == 'd' && (characters[length - 2] | 0x20) == 'e' && (characters[length - 1] | 0x20) == 'g') { |
| length -= 3; |
| unit = CSSUnitType::CSS_DEG; |
| } else if ((characters[length - 3] | 0x20) == 'r' && (characters[length - 2] | 0x20) == 'a' && (characters[length - 1] | 0x20) == 'd') { |
| length -= 3; |
| unit = CSSUnitType::CSS_RAD; |
| } else |
| return false; |
| |
| // 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); |
| if (!ok) |
| return false; |
| return true; |
| } |
| |
| static RefPtr<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; |
| CSSUnitType unit = CSSUnitType::CSS_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 == CSSUnitType::CSS_NUMBER) { |
| if (number && cssParserMode != SVGAttributeMode) |
| return nullptr; |
| unit = CSSUnitType::CSS_PX; |
| } |
| |
| if (number < 0 && !acceptsNegativeNumbers) |
| return nullptr; |
| if (std::isinf(number)) |
| return nullptr; |
| |
| return CSSPrimitiveValue::create(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 CSSPropertyStrokeColor: |
| case CSSPropertyBorderBlockEndColor: |
| case CSSPropertyBorderBlockStartColor: |
| case CSSPropertyBorderInlineEndColor: |
| case CSSPropertyBorderInlineStartColor: |
| case CSSPropertyColumnRuleColor: |
| 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, CSSUnitType& 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 == CSSUnitType::CSS_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 == CSSUnitType::CSS_PERCENTAGE && *current != '%') |
| return false; |
| |
| if (*current == '%') { |
| expect = CSSUnitType::CSS_PERCENTAGE; |
| localValue = localValue / 100.0 * 255.0; |
| // Clamp values at 255 for percentages over 100% |
| if (localValue > 255) |
| localValue = 255; |
| current++; |
| } else { |
| expect = CSSUnitType::CSS_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, 26, 51, 77, 102, 128, 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; |
| |
| // W3 standard stipulates a 2.55 alpha value multiplication factor. |
| value = negative ? 0 : static_cast<int>(lroundf(clampTo<double>(alpha, 0.0, 1.0) * 255.0f)); |
| 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 Color fastParseColorInternal(const CharacterType* characters, unsigned length, bool quirksMode) |
| { |
| CSSUnitType expect = CSSUnitType::CSS_UNKNOWN; |
| |
| if (length >= 4 && characters[0] == '#') { |
| RGBA32 rgb; |
| if (Color::parseHexColor(characters + 1, length - 1, rgb)) |
| return Color(rgb); |
| } |
| |
| if (quirksMode && (length == 3 || length == 6)) { |
| RGBA32 rgb; |
| if (Color::parseHexColor(characters, length, rgb)) |
| return Color(rgb); |
| } |
| |
| // 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 Color(); |
| if (!parseColorIntOrPercentage(current, end, ',', expect, green)) |
| return Color(); |
| if (!parseColorIntOrPercentage(current, end, ',', expect, blue)) |
| return Color(); |
| if (!parseAlphaValue(current, end, ')', alpha)) |
| return Color(); |
| if (current != end) |
| return Color(); |
| return Color(makeRGBA(red, green, blue, alpha)); |
| } |
| |
| // 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 Color(); |
| if (!parseColorIntOrPercentage(current, end, ',', expect, green)) |
| return Color(); |
| if (!parseColorIntOrPercentage(current, end, ')', expect, blue)) |
| return Color(); |
| if (current != end) |
| return Color(); |
| return Color(makeRGB(red, green, blue)); |
| } |
| |
| return Color(); |
| } |
| |
| RefPtr<CSSValue> CSSParserFastPaths::parseColor(const String& string, CSSParserMode parserMode, CSSValuePool& valuePool) |
| { |
| ASSERT(!string.isEmpty()); |
| CSSValueID valueID = cssValueKeywordID(string); |
| if (StyleColor::isColorKeyword(valueID)) { |
| if (!isValueAllowedInMode(valueID, parserMode)) |
| return nullptr; |
| return valuePool.createIdentifierValue(valueID); |
| } |
| |
| bool quirksMode = isQuirksModeBehavior(parserMode); |
| |
| // Fast path for hex colors and rgb()/rgba() colors |
| Color color; |
| if (string.is8Bit()) |
| color = fastParseColorInternal(string.characters8(), string.length(), quirksMode); |
| else |
| color = fastParseColorInternal(string.characters16(), string.length(), quirksMode); |
| if (!color.isValid()) |
| return nullptr; |
| return valuePool.createColorValue(color); |
| } |
| |
| bool CSSParserFastPaths::isValidKeywordPropertyAndValue(CSSPropertyID propertyId, CSSValueID valueID, const CSSParserContext& context) |
| { |
| #if !ENABLE(OVERFLOW_SCROLLING_TOUCH) |
| UNUSED_PARAM(context); |
| #endif |
| |
| if (valueID == CSSValueInvalid || !isValueAllowedInMode(valueID, context.mode)) |
| 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 == CSSValueAlphabetic || 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 CSSPropertyBorderBlockEndStyle: |
| case CSSPropertyBorderBlockStartStyle: |
| case CSSPropertyBorderInlineEndStyle: |
| case CSSPropertyBorderInlineStartStyle: |
| case CSSPropertyColumnRuleStyle: |
| 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 <= CSSValueContents) || valueID == CSSValueNone |
| || valueID == CSSValueGrid || valueID == CSSValueInlineGrid || valueID == CSSValueFlowRoot; |
| 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 == CSSValueAlphabetic || 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 CSSPropertyImageOrientation: // from-image | none |
| return valueID == CSSValueFromImage || valueID == CSSValueNone; |
| case CSSPropertyImageRendering: // auto | optimizeContrast | pixelated | optimizeSpeed | crispEdges | optimizeQuality | webkit-crispEdges |
| return valueID == CSSValueAuto || valueID == CSSValueOptimizeSpeed || valueID == CSSValueOptimizeQuality || valueID == CSSValueWebkitCrispEdges || valueID == CSSValueWebkitOptimizeContrast || valueID == CSSValueCrispEdges || valueID == CSSValuePixelated; |
| #if ENABLE(CSS_COMPOSITING) |
| case CSSPropertyIsolation: // auto | isolate |
| return valueID == CSSValueAuto || valueID == CSSValueIsolate; |
| #endif |
| 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); |
| // FIXME-NEWPARSER: Support? |
| // case CSSPropertyOverflowAnchor: |
| // return valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAuto; |
| case CSSPropertyOverflowWrap: // normal | break-word |
| case CSSPropertyWordWrap: |
| return valueID == CSSValueNormal || valueID == CSSValueBreakWord; |
| case CSSPropertyOverflowX: // visible | hidden | scroll | auto | overlay (overlay is a synonym for auto) |
| return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay; |
| case CSSPropertyOverflowY: // visible | hidden | scroll | auto | overlay | -webkit-paged-x | -webkit-paged-y (overlay is a synonym for auto) |
| 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 == CSSValueBoundingBox || (valueID >= CSSValueVisiblePainted && valueID <= CSSValueStroke); |
| case CSSPropertyPosition: // static | relative | absolute | fixed | sticky |
| return valueID == CSSValueStatic |
| || valueID == CSSValueRelative |
| || valueID == CSSValueAbsolute |
| || valueID == CSSValueFixed |
| || valueID == CSSValueSticky || valueID == CSSValueWebkitSticky; |
| case CSSPropertyResize: // none | both | horizontal | vertical | auto |
| return valueID == CSSValueNone || valueID == CSSValueBoth || valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueAuto; |
| case CSSPropertyShapeRendering: |
| return valueID == CSSValueAuto || valueID == CSSValueOptimizeSpeed || valueID == CSSValueCrispedges || valueID == CSSValueGeometricPrecision; |
| 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; |
| #if ENABLE(CSS3_TEXT) |
| case CSSPropertyWebkitTextAlignLast: |
| // auto | start | end | left | right | center | justify |
| return (valueID >= CSSValueLeft && valueID <= CSSValueJustify) || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueAuto; |
| #endif |
| case CSSPropertyTextAnchor: |
| return valueID == CSSValueStart || valueID == CSSValueMiddle || valueID == CSSValueEnd; |
| // FIXME-NEWPARSER: Support |
| // case CSSPropertyTextCombineUpright: |
| // return valueID == CSSValueNone || valueID == CSSValueAll; |
| case CSSPropertyTextDecorationStyle: |
| // solid | double | dotted | dashed | wavy |
| return valueID == CSSValueSolid || valueID == CSSValueDouble || valueID == CSSValueDotted || valueID == CSSValueDashed || valueID == CSSValueWavy; |
| #if ENABLE(CSS3_TEXT) |
| case CSSPropertyWebkitTextJustify: |
| // auto | none | inter-word | distribute |
| return valueID == CSSValueInterWord || valueID == CSSValueDistribute || valueID == CSSValueAuto || valueID == CSSValueNone; |
| #endif |
| case CSSPropertyWebkitTextOrientation: // mixed | upright | sideways | sideways-right |
| return valueID == CSSValueMixed || valueID == CSSValueUpright || valueID == CSSValueSideways || valueID == CSSValueSidewaysRight; |
| 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 == CSSValueIsolate || valueID == CSSValueWebkitIsolate |
| || valueID == CSSValueIsolateOverride || valueID == CSSValueWebkitIsolateOverride |
| || valueID == CSSValuePlaintext || valueID == CSSValueWebkitPlaintext; |
| case CSSPropertyVectorEffect: |
| return valueID == CSSValueNone || valueID == CSSValueNonScalingStroke; |
| case CSSPropertyVisibility: // visible | hidden | collapse |
| return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueCollapse; |
| case CSSPropertyWebkitAppearance: |
| return (valueID >= CSSValueCheckbox && valueID <= CSSValueCapsLockIndicator) || valueID == CSSValueNone; |
| case CSSPropertyWebkitBackfaceVisibility: |
| return valueID == CSSValueVisible || valueID == CSSValueHidden; |
| #if ENABLE(CSS_COMPOSITING) |
| case CSSPropertyMixBlendMode: |
| 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 || valueID == CSSValuePlusDarker || valueID == CSSValuePlusLighter; |
| #endif |
| case CSSPropertyWebkitBoxAlign: |
| return valueID == CSSValueStretch || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline; |
| #if ENABLE(CSS_BOX_DECORATION_BREAK) |
| case CSSPropertyWebkitBoxDecorationBreak: |
| return valueID == CSSValueClone || valueID == CSSValueSlice; |
| case CSSPropertyWebkitBoxDirection: |
| return valueID == CSSValueNormal || valueID == CSSValueReverse; |
| #endif |
| 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; |
| #if ENABLE(CURSOR_VISIBILITY) |
| case CSSPropertyWebkitCursorVisibility: |
| return valueID == CSSValueAuto || valueID == CSSValueAutoHide; |
| #endif |
| case CSSPropertyColumnFill: |
| return valueID == CSSValueAuto || valueID == CSSValueBalance; |
| case CSSPropertyWebkitColumnAxis: |
| return valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueAuto; |
| case CSSPropertyWebkitColumnProgression: |
| return valueID == CSSValueNormal || valueID == CSSValueReverse; |
| case CSSPropertyFlexDirection: |
| return valueID == CSSValueRow || valueID == CSSValueRowReverse || valueID == CSSValueColumn || valueID == CSSValueColumnReverse; |
| case CSSPropertyFlexWrap: |
| return valueID == CSSValueNowrap || valueID == CSSValueWrap || valueID == CSSValueWrapReverse; |
| case CSSPropertyWebkitHyphens: |
| return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueManual; |
| case CSSPropertyWebkitFontKerning: |
| return valueID == CSSValueAuto || valueID == CSSValueNormal || valueID == CSSValueNone; |
| case CSSPropertyWebkitFontSmoothing: |
| return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueAntialiased || valueID == CSSValueSubpixelAntialiased; |
| case CSSPropertyWebkitLineAlign: |
| return valueID == CSSValueNone || valueID == CSSValueEdges; |
| case CSSPropertyLineBreak: // auto | loose | normal | strict | after-white-space | anywhere |
| return valueID == CSSValueAuto || valueID == CSSValueLoose || valueID == CSSValueNormal || valueID == CSSValueStrict || valueID == CSSValueAfterWhiteSpace || valueID == CSSValueAnywhere; |
| case CSSPropertyWebkitLineSnap: |
| return valueID == CSSValueNone || valueID == CSSValueBaseline || valueID == CSSValueContain; |
| 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 || valueID == CSSValueInterCharacter; |
| case CSSPropertyWebkitTextCombine: |
| return valueID == CSSValueNone || valueID == CSSValueHorizontal; |
| case CSSPropertyWebkitTextSecurity: // disc | circle | square | none |
| return valueID == CSSValueDisc || valueID == CSSValueCircle || valueID == CSSValueSquare || valueID == CSSValueNone; |
| case CSSPropertyTransformStyle: |
| case CSSPropertyWebkitTransformStyle: |
| 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 CSSPropertyWritingMode: |
| // Note that horizontal-bt is not supported by the unprefixed version of |
| // the property, only by the -webkit- version. |
| return (valueID >= CSSValueHorizontalTb && valueID <= CSSValueHorizontalBt) |
| || valueID == CSSValueLrTb || valueID == CSSValueRlTb || valueID == CSSValueTbRl |
| || valueID == CSSValueLr || valueID == CSSValueRl || valueID == CSSValueTb; |
| case CSSPropertyWhiteSpace: // normal | pre | nowrap | pre-line | nowrap | break-spacess |
| return valueID == CSSValueNormal || valueID == CSSValuePre || valueID == CSSValuePreWrap || valueID == CSSValuePreLine || valueID == CSSValueNowrap || valueID == CSSValueBreakSpaces; |
| case CSSPropertyWordBreak: // normal | break-all | keep-all | break-word (this is a custom extension) |
| return valueID == CSSValueNormal || valueID == CSSValueBreakAll || valueID == CSSValueKeepAll || valueID == CSSValueBreakWord; |
| case CSSPropertyWebkitBorderFit: |
| return valueID == CSSValueBorder || valueID == CSSValueLines; |
| #if ENABLE(CSS_TRAILING_WORD) |
| case CSSPropertyAppleTrailingWord: // auto | -apple-partially-balanced |
| return valueID == CSSValueAuto || valueID == CSSValueWebkitPartiallyBalanced; |
| #endif |
| #if ENABLE(APPLE_PAY) |
| case CSSPropertyApplePayButtonStyle: // white | white-outline | black |
| return valueID == CSSValueWhite || valueID == CSSValueWhiteOutline || valueID == CSSValueBlack; |
| case CSSPropertyApplePayButtonType: // plain | buy | set-up | donate |
| if (valueID == CSSValuePlain || valueID == CSSValueBuy || valueID == CSSValueSetUp || valueID == CSSValueDonate) |
| return true; |
| #if ENABLE(APPLE_PAY_SESSION_V4) |
| // check-out | book | subscribe |
| return valueID == CSSValueCheckOut || valueID == CSSValueBook || valueID == CSSValueSubscribe; |
| #else |
| return false; |
| #endif |
| #endif |
| case CSSPropertyWebkitNbspMode: // normal | space |
| return valueID == CSSValueNormal || valueID == CSSValueSpace; |
| case CSSPropertyWebkitTextZoom: |
| return valueID == CSSValueNormal || valueID == CSSValueReset; |
| #if PLATFORM(IOS_FAMILY) |
| // Apple specific property. These will never be standardized and is purely to |
| // support custom WebKit-based Apple applications. |
| case CSSPropertyWebkitTouchCallout: |
| return valueID == CSSValueDefault || valueID == CSSValueNone; |
| #endif |
| case CSSPropertyWebkitMarqueeDirection: |
| return valueID == CSSValueForwards || valueID == CSSValueBackwards || valueID == CSSValueAhead || valueID == CSSValueReverse || valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueDown |
| || valueID == CSSValueUp || valueID == CSSValueAuto; |
| case CSSPropertyWebkitMarqueeStyle: |
| return valueID == CSSValueNone || valueID == CSSValueSlide || valueID == CSSValueScroll || valueID == CSSValueAlternate; |
| case CSSPropertyFontVariantPosition: // normal | sub | super |
| return valueID == CSSValueNormal || valueID == CSSValueSub || valueID == CSSValueSuper; |
| case CSSPropertyFontVariantCaps: // normal | small-caps | all-small-caps | petite-caps | all-petite-caps | unicase | titling-caps |
| return valueID == CSSValueNormal || valueID == CSSValueSmallCaps || valueID == CSSValueAllSmallCaps || valueID == CSSValuePetiteCaps || valueID == CSSValueAllPetiteCaps || valueID == CSSValueUnicase || valueID == CSSValueTitlingCaps; |
| case CSSPropertyFontVariantAlternates: // We only support the normal and historical-forms values. |
| return valueID == CSSValueNormal || valueID == CSSValueHistoricalForms; |
| #if ENABLE(OVERFLOW_SCROLLING_TOUCH) |
| case CSSPropertyWebkitOverflowScrolling: |
| if (!context.legacyOverflowScrollingTouchEnabled) |
| return false; |
| return valueID == CSSValueAuto || valueID == CSSValueTouch; |
| #endif |
| #if ENABLE(VARIATION_FONTS) |
| case CSSPropertyFontOpticalSizing: |
| return valueID == CSSValueAuto || valueID == CSSValueNone; |
| #endif |
| default: |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| } |
| |
| bool CSSParserFastPaths::isKeywordPropertyID(CSSPropertyID propertyId) |
| { |
| switch (propertyId) { |
| case CSSPropertyBorderBlockEndStyle: |
| case CSSPropertyBorderBlockStartStyle: |
| case CSSPropertyBorderBottomStyle: |
| case CSSPropertyBorderCollapse: |
| case CSSPropertyBorderInlineEndStyle: |
| case CSSPropertyBorderInlineStartStyle: |
| case CSSPropertyBorderLeftStyle: |
| case CSSPropertyBorderRightStyle: |
| case CSSPropertyBorderTopStyle: |
| case CSSPropertyBoxSizing: |
| case CSSPropertyBreakAfter: |
| case CSSPropertyBreakBefore: |
| case CSSPropertyBreakInside: |
| case CSSPropertyCaptionSide: |
| case CSSPropertyClear: |
| case CSSPropertyColumnFill: |
| case CSSPropertyWebkitColumnProgression: |
| case CSSPropertyColumnRuleStyle: |
| case CSSPropertyDirection: |
| case CSSPropertyDisplay: |
| case CSSPropertyEmptyCells: |
| case CSSPropertyFlexDirection: |
| case CSSPropertyFlexWrap: |
| case CSSPropertyFloat: |
| case CSSPropertyFontVariantAlternates: |
| case CSSPropertyFontVariantCaps: |
| case CSSPropertyFontVariantPosition: |
| case CSSPropertyImageOrientation: |
| case CSSPropertyImageRendering: |
| case CSSPropertyListStylePosition: |
| case CSSPropertyListStyleType: |
| case CSSPropertyObjectFit: |
| case CSSPropertyOutlineStyle: |
| case CSSPropertyOverflowWrap: |
| case CSSPropertyOverflowX: |
| case CSSPropertyOverflowY: |
| case CSSPropertyPointerEvents: |
| case CSSPropertyPosition: |
| case CSSPropertyResize: |
| case CSSPropertyTableLayout: |
| case CSSPropertyTextAlign: |
| case CSSPropertyTextOverflow: |
| case CSSPropertyTextRendering: |
| case CSSPropertyTextTransform: |
| case CSSPropertyTransformStyle: |
| case CSSPropertyUnicodeBidi: |
| case CSSPropertyVisibility: |
| case CSSPropertyWebkitAppearance: |
| case CSSPropertyWebkitBackfaceVisibility: |
| case CSSPropertyWebkitBorderFit: |
| case CSSPropertyWebkitBoxAlign: |
| case CSSPropertyWebkitBoxDirection: |
| case CSSPropertyWebkitBoxLines: |
| case CSSPropertyWebkitBoxOrient: |
| case CSSPropertyWebkitBoxPack: |
| case CSSPropertyWebkitColumnAxis: |
| case CSSPropertyWebkitFontKerning: |
| case CSSPropertyWebkitFontSmoothing: |
| case CSSPropertyWebkitHyphens: |
| case CSSPropertyWebkitLineAlign: |
| case CSSPropertyLineBreak: |
| case CSSPropertyWebkitLineSnap: |
| case CSSPropertyWebkitMarginAfterCollapse: |
| case CSSPropertyWebkitMarginBeforeCollapse: |
| case CSSPropertyWebkitMarginBottomCollapse: |
| case CSSPropertyWebkitMarginTopCollapse: |
| case CSSPropertyWebkitMarqueeDirection: |
| case CSSPropertyWebkitMarqueeStyle: |
| case CSSPropertyWebkitNbspMode: |
| case CSSPropertyWebkitPrintColorAdjust: |
| case CSSPropertyWebkitRtlOrdering: |
| case CSSPropertyWebkitRubyPosition: |
| case CSSPropertyWebkitTextCombine: |
| case CSSPropertyTextDecorationStyle: |
| case CSSPropertyWebkitTextOrientation: |
| case CSSPropertyWebkitTextSecurity: |
| case CSSPropertyWebkitTextZoom: |
| case CSSPropertyWebkitTransformStyle: |
| case CSSPropertyWebkitUserDrag: |
| case CSSPropertyWebkitUserModify: |
| case CSSPropertyWebkitUserSelect: |
| case CSSPropertyWhiteSpace: |
| case CSSPropertyWordBreak: |
| case CSSPropertyWordWrap: |
| |
| // SVG CSS properties from SVG 1.1, Appendix N: Property Index. |
| case CSSPropertyAlignmentBaseline: |
| case CSSPropertyBufferedRendering: |
| case CSSPropertyClipRule: |
| case CSSPropertyColorInterpolation: |
| case CSSPropertyColorInterpolationFilters: |
| case CSSPropertyColorRendering: |
| case CSSPropertyDominantBaseline: |
| case CSSPropertyFillRule: |
| case CSSPropertyMaskType: |
| case CSSPropertyShapeRendering: |
| case CSSPropertyStrokeLinecap: |
| case CSSPropertyStrokeLinejoin: |
| case CSSPropertyTextAnchor: |
| case CSSPropertyVectorEffect: |
| case CSSPropertyWritingMode: |
| |
| // FIXME-NEWPARSER: Treat all as a keyword property. |
| // case CSSPropertyAll: |
| |
| // FIXME-NEWPARSER: Add the following unprefixed properties: |
| // case CSSPropertyBackfaceVisibility: |
| // case CSSPropertyFontKerning: |
| // case CSSPropertyHyphens: |
| // case CSSPropertyOverflowAnchor: |
| // case CSSPropertyScrollSnapType: |
| // case CSSPropertyTextAlignLast: |
| // case CSSPropertyTextCombineUpright: |
| // case CSSPropertyTextDecorationStyle: |
| // case CSSPropertyTextJustify: |
| // case CSSPropertyTextOrientation: |
| // case CSSPropertyUserSelect: |
| #if ENABLE(CSS_TRAILING_WORD) |
| case CSSPropertyAppleTrailingWord: |
| #endif |
| #if ENABLE(CSS_COMPOSITING) |
| case CSSPropertyIsolation: |
| case CSSPropertyMixBlendMode: |
| #endif |
| #if ENABLE(CSS_BOX_DECORATION_BREAK) |
| case CSSPropertyWebkitBoxDecorationBreak: |
| #endif |
| #if ENABLE(CURSOR_VISIBILITY) |
| case CSSPropertyWebkitCursorVisibility: |
| #endif |
| #if ENABLE(OVERFLOW_SCROLLING_TOUCH) |
| case CSSPropertyWebkitOverflowScrolling: |
| #endif |
| #if ENABLE(CSS3_TEXT) |
| case CSSPropertyWebkitTextAlignLast: |
| case CSSPropertyWebkitTextJustify: |
| #endif |
| #if PLATFORM(IOS_FAMILY) |
| // Apple specific property. This will never be standardized and is purely to |
| // support custom WebKit-based Apple applications. |
| case CSSPropertyWebkitTouchCallout: |
| #endif |
| #if ENABLE(APPLE_PAY) |
| case CSSPropertyApplePayButtonStyle: |
| case CSSPropertyApplePayButtonType: |
| #endif |
| #if ENABLE(VARIATION_FONTS) |
| case CSSPropertyFontOpticalSizing: |
| #endif |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool isUniversalKeyword(const String& string) |
| { |
| // These keywords can be used for all properties. |
| return equalLettersIgnoringASCIICase(string, "initial") |
| || equalLettersIgnoringASCIICase(string, "inherit") |
| || equalLettersIgnoringASCIICase(string, "unset") |
| || equalLettersIgnoringASCIICase(string, "revert"); |
| } |
| |
| static RefPtr<CSSValue> parseKeywordValue(CSSPropertyID propertyId, const String& string, const CSSParserContext& context) |
| { |
| ASSERT(!string.isEmpty()); |
| |
| if (!CSSParserFastPaths::isKeywordPropertyID(propertyId)) { |
| // All properties accept the values of "initial" and "inherit". |
| if (!isUniversalKeyword(string)) |
| return nullptr; |
| |
| // Parse initial/inherit shorthands using the CSSPropertyParser. |
| if (shorthandForProperty(propertyId).length()) |
| return nullptr; |
| |
| // Descriptors do not support css wide keywords. |
| if (CSSProperty::isDescriptorOnly(propertyId)) |
| return nullptr; |
| } |
| |
| CSSValueID valueID = cssValueKeywordID(string); |
| |
| if (!valueID) |
| return nullptr; |
| |
| if (valueID == CSSValueInherit) |
| return CSSValuePool::singleton().createInheritedValue(); |
| if (valueID == CSSValueInitial) |
| return CSSValuePool::singleton().createExplicitInitialValue(); |
| if (valueID == CSSValueUnset) |
| return CSSValuePool::singleton().createUnsetValue(); |
| if (valueID == CSSValueRevert) |
| return CSSValuePool::singleton().createRevertValue(); |
| |
| if (CSSParserFastPaths::isValidKeywordPropertyAndValue(propertyId, valueID, context)) |
| return CSSPrimitiveValue::createIdentifier(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 == notFound) |
| return false; |
| unsigned argumentLength = static_cast<unsigned>(delimiter); |
| CSSUnitType unit = CSSUnitType::CSS_NUMBER; |
| double number; |
| if (!parseSimpleLength(pos, argumentLength, unit, number)) |
| return false; |
| if (!number && unit == CSSUnitType::CSS_NUMBER) |
| unit = CSSUnitType::CSS_PX; |
| if (unit == CSSUnitType::CSS_NUMBER || (unit == CSSUnitType::CSS_PERCENTAGE && (transformValue->name() == CSSValueTranslateZ || (transformValue->name() == CSSValueTranslate3d && expectedCount == 1)))) |
| return false; |
| transformValue->append(CSSPrimitiveValue::create(number, unit)); |
| pos += argumentLength + 1; |
| --expectedCount; |
| } |
| return true; |
| } |
| |
| template <typename CharType> |
| static bool parseTransformAngleArgument(CharType*& pos, CharType* end, CSSFunctionValue* transformValue) |
| { |
| size_t delimiter = WTF::find(pos, end - pos, ')'); |
| if (delimiter == notFound) |
| return false; |
| |
| unsigned argumentLength = static_cast<unsigned>(delimiter); |
| CSSUnitType unit = CSSUnitType::CSS_NUMBER; |
| double number; |
| if (!parseSimpleAngle(pos, argumentLength, unit, number)) |
| return false; |
| if (!number && unit == CSSUnitType::CSS_NUMBER) |
| unit = CSSUnitType::CSS_DEG; |
| |
| transformValue->append(CSSPrimitiveValue::create(number, unit)); |
| pos += argumentLength + 1; |
| |
| 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 == notFound) |
| return false; |
| unsigned argumentLength = static_cast<unsigned>(delimiter); |
| bool ok; |
| double number = charactersToDouble(pos, argumentLength, &ok); |
| if (!ok) |
| return false; |
| transformValue->append(CSSPrimitiveValue::create(number, CSSUnitType::CSS_NUMBER)); |
| pos += argumentLength + 1; |
| --expectedCount; |
| } |
| return true; |
| } |
| |
| static const int kShortestValidTransformStringLength = 9; // "rotate(0)" |
| |
| template <typename CharType> |
| static RefPtr<CSSFunctionValue> parseSimpleTransformValue(CharType*& pos, CharType* end) |
| { |
| if (end - pos < kShortestValidTransformStringLength) |
| 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; |
| RefPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(transformType); |
| if (!parseTransformTranslateArguments(pos, end, expectedArgumentCount, transformValue.get())) |
| return nullptr; |
| return transformValue; |
| } |
| |
| 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; |
| RefPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(CSSValueMatrix3d); |
| if (!parseTransformNumberArguments(pos, end, 16, transformValue.get())) |
| return nullptr; |
| return transformValue; |
| } |
| |
| 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; |
| RefPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(CSSValueScale3d); |
| if (!parseTransformNumberArguments(pos, end, 3, transformValue.get())) |
| return nullptr; |
| return transformValue; |
| } |
| |
| const bool isRotate = toASCIILower(pos[0]) == 'r' |
| && toASCIILower(pos[1]) == 'o' |
| && toASCIILower(pos[2]) == 't' |
| && toASCIILower(pos[3]) == 'a' |
| && toASCIILower(pos[4]) == 't' |
| && toASCIILower(pos[5]) == 'e'; |
| |
| if (isRotate) { |
| CSSValueID transformType; |
| unsigned argumentStart = 7; |
| CharType c6 = toASCIILower(pos[6]); |
| if (c6 == '(') { |
| transformType = CSSValueRotate; |
| } else if (c6 == 'z' && pos[7] == '(') { |
| transformType = CSSValueRotateZ; |
| argumentStart = 8; |
| } else |
| return nullptr; |
| |
| pos += argumentStart; |
| RefPtr<CSSFunctionValue> transformValue = CSSFunctionValue::create(transformType); |
| if (!parseTransformAngleArgument(pos, end, transformValue.get())) |
| return nullptr; |
| return transformValue; |
| } |
| |
| return nullptr; |
| } |
| |
| template <typename CharType> |
| static bool transformCanLikelyUseFastPath(const CharType* chars, unsigned length) |
| { |
| // Very fast scan that attempts to reject most transforms that couldn't |
| // take the fast path. This avoids doing the malloc and string->double |
| // conversions in parseSimpleTransformValue only to discard them when we |
| // run into a transform component we don't understand. |
| unsigned i = 0; |
| while (i < length) { |
| if (isCSSSpace(chars[i])) { |
| ++i; |
| continue; |
| } |
| |
| if (length - i < kShortestValidTransformStringLength) |
| return false; |
| |
| switch (toASCIILower(chars[i])) { |
| case 't': |
| // translate, translateX, translateY, translateZ, translate3d. |
| if (toASCIILower(chars[i + 8]) != 'e') |
| return false; |
| i += 9; |
| break; |
| case 'm': |
| // matrix3d. |
| if (toASCIILower(chars[i + 7]) != 'd') |
| return false; |
| i += 8; |
| break; |
| case 's': |
| // scale3d. |
| if (toASCIILower(chars[i + 6]) != 'd') |
| return false; |
| i += 7; |
| break; |
| case 'r': |
| // rotate. |
| if (toASCIILower(chars[i + 5]) != 'e') |
| return false; |
| i += 6; |
| // rotateZ |
| if (toASCIILower(chars[i]) == 'z') |
| ++i; |
| break; |
| |
| default: |
| return false; |
| } |
| size_t argumentsEnd = WTF::find(chars, length, ')', i); |
| if (argumentsEnd == notFound) |
| return false; |
| // Advance to the end of the arguments. |
| i = argumentsEnd + 1; |
| } |
| return i == length; |
| } |
| |
| template <typename CharType> |
| static RefPtr<CSSValueList> parseSimpleTransformList(const CharType* chars, unsigned length) |
| { |
| if (!transformCanLikelyUseFastPath(chars, length)) |
| return nullptr; |
| const CharType*& pos = chars; |
| const CharType* end = chars + length; |
| RefPtr<CSSValueList> transformList; |
| while (pos < end) { |
| while (pos < end && isCSSSpace(*pos)) |
| ++pos; |
| if (pos >= end) |
| break; |
| RefPtr<CSSFunctionValue> transformValue = parseSimpleTransformValue(pos, end); |
| if (!transformValue) |
| return nullptr; |
| if (!transformList) |
| transformList = CSSValueList::createSpaceSeparated(); |
| transformList->append(*transformValue); |
| } |
| return transformList; |
| } |
| |
| static RefPtr<CSSValue> parseSimpleTransform(CSSPropertyID propertyID, const String& string) |
| { |
| ASSERT(!string.isEmpty()); |
| if (propertyID != CSSPropertyTransform) |
| return nullptr; |
| if (string.is8Bit()) |
| return parseSimpleTransformList(string.characters8(), string.length()); |
| return parseSimpleTransformList(string.characters16(), string.length()); |
| } |
| |
| static RefPtr<CSSValue> parseCaretColor(const String& string, CSSParserMode parserMode) |
| { |
| ASSERT(!string.isEmpty()); |
| CSSValueID valueID = cssValueKeywordID(string); |
| if (valueID == CSSValueAuto) |
| return CSSValuePool::singleton().createIdentifierValue(valueID); |
| return CSSParserFastPaths::parseColor(string, parserMode, CSSValuePool::singleton()); |
| } |
| |
| RefPtr<CSSValue> CSSParserFastPaths::maybeParseValue(CSSPropertyID propertyID, const String& string, const CSSParserContext& context) |
| { |
| if (auto result = parseSimpleLengthValue(propertyID, string, context.mode)) |
| return result; |
| if (propertyID == CSSPropertyCaretColor) |
| return parseCaretColor(string, context.mode); |
| if (isColorPropertyID(propertyID)) |
| return parseColor(string, context.mode, CSSValuePool::singleton()); |
| if (auto result = parseKeywordValue(propertyID, string, context)) |
| return result; |
| return parseSimpleTransform(propertyID, string); |
| } |
| |
| } // namespace WebCore |
