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CSSParserFastPaths.cpp
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1394 lines (1279 loc) · 58 KB
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// Copyright 2014 The Chromium Authors. All rights reserved.
// Copyright (C) 2016-2020 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 "CSSPropertyParserHelpers.h"
#include "CSSValueList.h"
#include "CSSValuePool.h"
#include "DeprecatedGlobalSettings.h"
#include "HTMLParserIdioms.h"
#include "HashTools.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 std::optional<double> parseCSSNumber(const CharacterType* characters, unsigned length)
{
// The charactersToDouble() function allows a trailing '.' but that is not allowed in CSS number values.
if (length && characters[length - 1] == '.')
return std::nullopt;
// FIXME: If we don't want to skip over leading spaces, we should use parseDouble, not charactersToDouble.
bool ok;
auto number = charactersToDouble(characters, length, &ok);
if (!ok)
return std::nullopt;
return number;
}
template <typename CharacterType>
static inline bool parseSimpleLength(const CharacterType* characters, unsigned length, CSSUnitType& unit, double& number)
{
if (length > 2 && isASCIIAlphaCaselessEqual(characters[length - 2], 'p') && isASCIIAlphaCaselessEqual(characters[length - 1], 'x')) {
length -= 2;
unit = CSSUnitType::CSS_PX;
} else if (length > 1 && characters[length - 1] == '%') {
length -= 1;
unit = CSSUnitType::CSS_PERCENTAGE;
}
auto parsedNumber = parseCSSNumber(characters, length);
number = parsedNumber.value_or(0);
return parsedNumber.has_value();
}
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 (isASCIIAlphaCaselessEqual(characters[length - 3], 'd') && isASCIIAlphaCaselessEqual(characters[length - 2], 'e') && isASCIIAlphaCaselessEqual(characters[length - 1], 'g')) {
length -= 3;
unit = CSSUnitType::CSS_DEG;
} else if (isASCIIAlphaCaselessEqual(characters[length - 3], 'r') && isASCIIAlphaCaselessEqual(characters[length - 2], 'a') && isASCIIAlphaCaselessEqual(characters[length - 1], 'd')) {
length -= 3;
unit = CSSUnitType::CSS_RAD;
} else
return false;
auto parsedNumber = parseCSSNumber(characters, length);
number = parsedNumber.value_or(0);
return parsedNumber.has_value();
}
static RefPtr<CSSValue> parseSimpleLengthValue(CSSPropertyID propertyId, StringView 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);
}
// 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 std::optional<uint8_t> parseColorIntOrPercentage(const CharacterType*& string, const CharacterType* end, const char terminator, CSSUnitType& expect)
{
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 std::nullopt;
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 std::nullopt;
if (expect == CSSUnitType::CSS_NUMBER && (*current == '.' || *current == '%'))
return std::nullopt;
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 std::nullopt;
current += numCharactersParsed;
if (*current != '%')
return std::nullopt;
localValue += percentage;
}
if (expect == CSSUnitType::CSS_PERCENTAGE && *current != '%')
return std::nullopt;
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 std::nullopt;
string = current;
// Clamp negative values at zero.
ASSERT(localValue <= 255);
return negative ? 0 : static_cast<uint8_t>(localValue);
}
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 std::optional<uint8_t> parseAlphaValue(const CharacterType*& string, const CharacterType* end, const char terminator)
{
while (string != end && isHTMLSpace<CharacterType>(*string))
string++;
bool negative = false;
if (string != end && *string == '-') {
negative = true;
string++;
}
int length = end - string;
if (length < 2)
return std::nullopt;
if (string[length - 1] != terminator || !isASCIIDigit(string[length - 2]))
return std::nullopt;
if (string[0] != '0' && string[0] != '1' && string[0] != '.') {
if (checkForValidDouble(string, end, terminator)) {
string = end;
return negative ? 0 : 255;
}
return std::nullopt;
}
if (length == 2 && string[0] != '.') {
uint8_t result = !negative && string[0] == '1' ? 255 : 0;
string = end;
return result;
}
if (isTenthAlpha(string, length - 1)) {
static constexpr uint8_t tenthAlphaValues[] = { 0, 26, 51, 77, 102, 128, 153, 179, 204, 230 };
uint8_t result = negative ? 0 : tenthAlphaValues[string[length - 2] - '0'];
string = end;
return result;
}
double alpha = 0;
if (!parseDouble(string, end, terminator, alpha))
return std::nullopt;
string = end;
return negative ? 0 : convertFloatAlphaTo<uint8_t>(alpha);
}
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');
}
static std::optional<SRGBA<uint8_t>> finishParsingHexColor(uint32_t value, unsigned length)
{
switch (length) {
case 3:
// #abc converts to #aabbcc
// FIXME: Replace conversion to PackedColor::ARGB with simpler bit math to construct
// the SRGBA<uint8_t> directly.
return asSRGBA(PackedColor::ARGB {
0xFF000000
| (value & 0xF00) << 12 | (value & 0xF00) << 8
| (value & 0xF0) << 8 | (value & 0xF0) << 4
| (value & 0xF) << 4 | (value & 0xF) });
case 4:
// #abcd converts to ddaabbcc since alpha bytes are the high bytes.
// FIXME: Replace conversion to PackedColor::ARGB with simpler bit math to construct
// the SRGBA<uint8_t> directly.
return asSRGBA(PackedColor::ARGB {
(value & 0xF) << 28 | (value & 0xF) << 24
| (value & 0xF000) << 8 | (value & 0xF000) << 4
| (value & 0xF00) << 4 | (value & 0xF00)
| (value & 0xF0) | (value & 0xF0) >> 4 });
case 6:
// FIXME: Replace conversion to PackedColor::ARGB with simpler bit math to construct
// the SRGBA<uint8_t> directly.
return asSRGBA(PackedColor::ARGB { 0xFF000000 | value });
case 8:
return asSRGBA(PackedColor::RGBA { value });
}
return std::nullopt;
}
template<typename CharacterType> static std::optional<SRGBA<uint8_t>> parseHexColorInternal(const CharacterType* characters, unsigned length)
{
if (length != 3 && length != 4 && length != 6 && length != 8)
return std::nullopt;
uint32_t value = 0;
for (unsigned i = 0; i < length; ++i) {
auto digit = characters[i];
if (!isASCIIHexDigit(digit))
return std::nullopt;
value <<= 4;
value |= toASCIIHexValue(digit);
}
return finishParsingHexColor(value, length);
}
template<typename CharacterType> static std::optional<SRGBA<uint8_t>> parseNumericColor(const CharacterType* characters, unsigned length, bool strict)
{
if (length >= 4 && characters[0] == '#') {
if (auto hexColor = parseHexColorInternal(characters + 1, length - 1))
return *hexColor;
}
if (!strict && (length == 3 || length == 6)) {
if (auto hexColor = parseHexColorInternal(characters, length))
return *hexColor;
}
auto expect = CSSUnitType::CSS_UNKNOWN;
// Try rgba() syntax.
if (mightBeRGBA(characters, length)) {
auto current = characters + 5;
auto end = characters + length;
auto red = parseColorIntOrPercentage(current, end, ',', expect);
if (!red)
return std::nullopt;
auto green = parseColorIntOrPercentage(current, end, ',', expect);
if (!green)
return std::nullopt;
auto blue = parseColorIntOrPercentage(current, end, ',', expect);
if (!blue)
return std::nullopt;
auto alpha = parseAlphaValue(current, end, ')');
if (!alpha)
return std::nullopt;
if (current != end)
return std::nullopt;
return SRGBA<uint8_t> { *red, *green, *blue, *alpha };
}
// Try rgb() syntax.
if (mightBeRGB(characters, length)) {
auto current = characters + 4;
auto end = characters + length;
auto red = parseColorIntOrPercentage(current, end, ',', expect);
if (!red)
return std::nullopt;
auto green = parseColorIntOrPercentage(current, end, ',', expect);
if (!green)
return std::nullopt;
auto blue = parseColorIntOrPercentage(current, end, ')', expect);
if (!blue)
return std::nullopt;
if (current != end)
return std::nullopt;
return SRGBA<uint8_t> { *red, *green, *blue };
}
return std::nullopt;
}
static std::optional<SRGBA<uint8_t>> parseNumericColor(StringView string, const CSSParserContext& context)
{
bool strict = !isQuirksModeBehavior(context.mode);
if (string.is8Bit())
return parseNumericColor(string.characters8(), string.length(), strict);
return parseNumericColor(string.characters16(), string.length(), strict);
}
static RefPtr<CSSValue> parseColor(StringView string, const CSSParserContext& context)
{
ASSERT(!string.isEmpty());
auto valueID = cssValueKeywordID(string);
if (StyleColor::isColorKeyword(valueID)) {
if (!isValueAllowedInMode(valueID, context.mode))
return nullptr;
return CSSValuePool::singleton().createIdentifierValue(valueID);
}
if (auto color = parseNumericColor(string, context))
return CSSValuePool::singleton().createColorValue(*color);
return nullptr;
}
static std::optional<SRGBA<uint8_t>> finishParsingNamedColor(char* buffer, unsigned length)
{
buffer[length] = '\0';
auto namedColor = findColor(buffer, length);
if (!namedColor)
return std::nullopt;
return asSRGBA(PackedColor::ARGB { namedColor->ARGBValue });
}
template<typename CharacterType> static std::optional<SRGBA<uint8_t>> parseNamedColorInternal(const CharacterType* characters, unsigned length)
{
char buffer[64]; // Easily big enough for the longest color name.
if (length > sizeof(buffer) - 1)
return std::nullopt;
for (unsigned i = 0; i < length; ++i) {
auto character = characters[i];
if (!character || !isASCII(character))
return std::nullopt;
buffer[i] = toASCIILower(static_cast<char>(character));
}
return finishParsingNamedColor(buffer, length);
}
template<typename CharacterType> static std::optional<SRGBA<uint8_t>> parseSimpleColorInternal(const CharacterType* characters, unsigned length, bool strict)
{
if (auto color = parseNumericColor(characters, length, strict))
return color;
return parseNamedColorInternal(characters, length);
}
std::optional<SRGBA<uint8_t>> CSSParserFastPaths::parseSimpleColor(StringView string, bool strict)
{
if (string.is8Bit())
return parseSimpleColorInternal(string.characters8(), string.length(), strict);
return parseSimpleColorInternal(string.characters16(), string.length(), strict);
}
std::optional<SRGBA<uint8_t>> CSSParserFastPaths::parseHexColor(StringView string)
{
if (string.is8Bit())
return parseHexColorInternal(string.characters8(), string.length());
return parseHexColorInternal(string.characters16(), string.length());
}
std::optional<SRGBA<uint8_t>> CSSParserFastPaths::parseNamedColor(StringView string)
{
if (string.is8Bit())
return parseNamedColorInternal(string.characters8(), string.length());
return parseNamedColorInternal(string.characters16(), string.length());
}
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 | inline-start | inline-end | left | right | both
return valueID == CSSValueNone || valueID == CSSValueInlineStart || valueID == CSSValueInlineEnd || 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 CSSPropertyDirection: // ltr | rtl
return valueID == CSSValueLtr || valueID == CSSValueRtl;
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: // inline-start | inline-end | left | right | none
return valueID == CSSValueInlineStart || valueID == CSSValueInlineEnd || 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;
case CSSPropertyInputSecurity:
return valueID == CSSValueAuto || valueID == CSSValueNone;
#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 CSSPropertyParserHelpers::isPredefinedCounterStyle(valueID) || valueID == CSSValueNone;
case CSSPropertyMaskType:
return valueID == CSSValueLuminance || valueID == CSSValueAlpha;
case CSSPropertyMathStyle:
return valueID == CSSValueNormal || valueID == CSSValueCompact;
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 == CSSValueNone || valueID == CSSValueAuto;
case CSSPropertyOverflowWrap: // normal | break-word | anywhere
return valueID == CSSValueNormal || valueID == CSSValueBreakWord || valueID == CSSValueAnywhere;
case CSSPropertyOverflowX: // visible | hidden | scroll | auto | overlay (overlay is a synonym for auto)
if (context.overflowClipEnabled && valueID == CSSValueClip)
return true;
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)
if (context.overflowClipEnabled && valueID == CSSValueClip)
return true;
return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay || valueID == CSSValueWebkitPagedX || valueID == CSSValueWebkitPagedY;
case CSSPropertyOverscrollBehaviorBlock:
case CSSPropertyOverscrollBehaviorInline:
case CSSPropertyOverscrollBehaviorX:
case CSSPropertyOverscrollBehaviorY:
return valueID == CSSValueAuto || valueID == CSSValueContain || valueID == CSSValueNone;
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 | block | inline | auto
return valueID == CSSValueNone || valueID == CSSValueBoth || valueID == CSSValueHorizontal || valueID == CSSValueVertical || valueID == CSSValueBlock || valueID == CSSValueInline || 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 <= CSSValueInternalThCenter) || valueID == CSSValueStart || valueID == CSSValueEnd;
case CSSPropertyTextAlignLast:
// auto | start | end | left | right | center | justify | match-parent
return (valueID >= CSSValueLeft && valueID <= CSSValueJustify) || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueAuto || valueID == CSSValueMatchParent;
case CSSPropertyTextAnchor:
return valueID == CSSValueStart || valueID == CSSValueMiddle || valueID == CSSValueEnd;
case CSSPropertyTextDecorationStyle:
// solid | double | dotted | dashed | wavy
return valueID == CSSValueSolid || valueID == CSSValueDouble || valueID == CSSValueDotted || valueID == CSSValueDashed || valueID == CSSValueWavy;
case CSSPropertyTextJustify:
// auto | none | inter-word | inter-character | distribute
return valueID == CSSValueInterWord || valueID == CSSValueInterCharacter || valueID == CSSValueDistribute || valueID == CSSValueAuto || valueID == CSSValueNone;
case CSSPropertyTextOrientation:
// mixed | upright | sideways
return valueID == CSSValueMixed || valueID == CSSValueUpright || valueID == CSSValueSideways;
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 CSSPropertyAppearance: {
if (valueID == CSSValueDefaultButton)
return context.useSystemAppearance;
#if ENABLE(ATTACHMENT_ELEMENT)
if (valueID == CSSValueAttachment || valueID == CSSValueBorderlessAttachment)
return DeprecatedGlobalSettings::attachmentElementEnabled();
#endif
return (valueID >= CSSValueCheckbox && valueID <= CSSValueTextfield) || valueID == CSSValueNone || valueID == CSSValueAuto;
}
case CSSPropertyBackfaceVisibility:
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 CSSPropertyFontKerning:
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 CSSPropertyPrintColorAdjust:
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 CSSPropertyTextCombineUpright:
return valueID == CSSValueNone || valueID == CSSValueAll;
case CSSPropertyWebkitTextSecurity: // disc | circle | square | none
return valueID == CSSValueDisc || valueID == CSSValueCircle || valueID == CSSValueSquare || valueID == CSSValueNone;
case CSSPropertyTransformStyle:
return valueID == CSSValueFlat
|| valueID == CSSValuePreserve3d
#if ENABLE(CSS_TRANSFORM_STYLE_OPTIMIZED_3D)
|| (valueID == CSSValueOptimized3d && context.transformStyleOptimized3DEnabled)
#endif
;
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;
#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 | check-out | book | subscribe | reload | add-money | top-up | order | rent | support | contribute | tip
return (valueID == CSSValuePlain
|| valueID == CSSValueBuy
|| valueID == CSSValueSetUp
|| valueID == CSSValueDonate
|| valueID == CSSValueCheckOut
|| valueID == CSSValueBook
|| valueID == CSSValueSubscribe
#if ENABLE(APPLE_PAY_NEW_BUTTON_TYPES)
|| valueID == CSSValueReload
|| valueID == CSSValueAddMoney
|| valueID == CSSValueTopUp
|| valueID == CSSValueOrder
|| valueID == CSSValueRent
|| valueID == CSSValueSupport
|| valueID == CSSValueContribute
|| valueID == CSSValueTip
#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:
return valueID == CSSValueAuto || valueID == CSSValueTouch;
#endif
#if ENABLE(VARIATION_FONTS)
case CSSPropertyFontOpticalSizing:
return valueID == CSSValueAuto || valueID == CSSValueNone;
#endif
case CSSPropertyTextDecorationSkipInk:
return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueAll;
case CSSPropertyContainerType:
// FIXME: Support 'style'. It will require parsing the value as a list.
return valueID == CSSValueNormal || valueID == CSSValueSize || valueID == CSSValueInlineSize;
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 CSSPropertyEmptyCells:
case CSSPropertyFlexDirection:
case CSSPropertyFlexWrap:
case CSSPropertyFloat:
case CSSPropertyFontKerning:
case CSSPropertyFontVariantAlternates:
case CSSPropertyFontVariantCaps:
case CSSPropertyFontVariantPosition:
case CSSPropertyImageOrientation:
case CSSPropertyImageRendering:
case CSSPropertyInputSecurity:
case CSSPropertyListStylePosition:
case CSSPropertyListStyleType:
case CSSPropertyObjectFit:
case CSSPropertyOutlineStyle:
case CSSPropertyOverflowWrap:
case CSSPropertyOverflowX:
case CSSPropertyOverflowY:
case CSSPropertyOverscrollBehaviorBlock:
case CSSPropertyOverscrollBehaviorInline:
case CSSPropertyOverscrollBehaviorX:
case CSSPropertyOverscrollBehaviorY:
case CSSPropertyPointerEvents:
case CSSPropertyPosition:
case CSSPropertyResize:
case CSSPropertyTableLayout:
case CSSPropertyTextAlign:
case CSSPropertyTextAlignLast:
case CSSPropertyTextJustify:
case CSSPropertyTextOrientation:
case CSSPropertyTextOverflow:
case CSSPropertyTextRendering:
case CSSPropertyTextTransform:
case CSSPropertyTransformStyle:
case CSSPropertyUnicodeBidi:
case CSSPropertyVisibility:
case CSSPropertyAppearance:
case CSSPropertyBackfaceVisibility:
case CSSPropertyWebkitBoxAlign:
case CSSPropertyWebkitBoxDirection:
case CSSPropertyWebkitBoxLines:
case CSSPropertyWebkitBoxOrient:
case CSSPropertyWebkitBoxPack:
case CSSPropertyWebkitColumnAxis:
case CSSPropertyWebkitFontSmoothing:
case CSSPropertyWebkitHyphens:
case CSSPropertyWebkitLineAlign:
case CSSPropertyLineBreak:
case CSSPropertyWebkitLineSnap:
case CSSPropertyWebkitMarqueeDirection:
case CSSPropertyWebkitMarqueeStyle:
case CSSPropertyWebkitNbspMode:
case CSSPropertyPrintColorAdjust:
case CSSPropertyWebkitRtlOrdering:
case CSSPropertyWebkitRubyPosition:
case CSSPropertyWebkitTextCombine:
case CSSPropertyTextCombineUpright:
case CSSPropertyTextDecorationStyle:
case CSSPropertyWebkitTextSecurity:
case CSSPropertyWebkitTextZoom:
case CSSPropertyWebkitUserDrag:
case CSSPropertyWebkitUserModify:
case CSSPropertyWebkitUserSelect:
case CSSPropertyWhiteSpace:
case CSSPropertyWordBreak:
// SVG CSS properties from SVG 1.1, Appendix N: Property Index.
case CSSPropertyAlignmentBaseline:
case CSSPropertyBufferedRendering:
case CSSPropertyClipRule:
case CSSPropertyColorInterpolation:
case CSSPropertyColorInterpolationFilters:
case CSSPropertyDominantBaseline: