| /* |
| * Copyright (C) 2011 Andreas Kling (kling@webkit.org) |
| * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved. |
| * Copyright (C) 2021 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "CSSValue.h" |
| |
| #include "CSSAspectRatioValue.h" |
| #include "CSSBorderImageSliceValue.h" |
| #include "CSSCalcValue.h" |
| #include "CSSCanvasValue.h" |
| #include "CSSContentDistributionValue.h" |
| #include "CSSCrossfadeValue.h" |
| #include "CSSCursorImageValue.h" |
| #include "CSSCustomPropertyValue.h" |
| #include "CSSFilterImageValue.h" |
| #include "CSSFontFaceSrcValue.h" |
| #include "CSSFontFeatureValue.h" |
| #include "CSSFontPaletteValuesOverrideColorsValue.h" |
| #include "CSSFontStyleRangeValue.h" |
| #include "CSSFontStyleValue.h" |
| #include "CSSFontValue.h" |
| #include "CSSFontVariationValue.h" |
| #include "CSSFunctionValue.h" |
| #include "CSSGradientValue.h" |
| #include "CSSImageSetValue.h" |
| #include "CSSImageValue.h" |
| #include "CSSInheritedValue.h" |
| #include "CSSInitialValue.h" |
| #include "CSSLineBoxContainValue.h" |
| #include "CSSNamedImageValue.h" |
| #include "CSSPaintImageValue.h" |
| #include "CSSPendingSubstitutionValue.h" |
| #include "CSSPrimitiveValue.h" |
| #include "CSSProperty.h" |
| #include "CSSReflectValue.h" |
| #include "CSSShadowValue.h" |
| #include "CSSTimingFunctionValue.h" |
| #include "CSSUnicodeRangeValue.h" |
| #include "CSSUnsetValue.h" |
| #include "CSSValueList.h" |
| #include "CSSValuePair.h" |
| #include "CSSVariableReferenceValue.h" |
| |
| #include "CSSGridAutoRepeatValue.h" |
| #include "CSSGridIntegerRepeatValue.h" |
| #include "CSSGridLineNamesValue.h" |
| #include "CSSGridTemplateAreasValue.h" |
| |
| #include "DeprecatedCSSOMPrimitiveValue.h" |
| #include "DeprecatedCSSOMValueList.h" |
| |
| namespace WebCore { |
| |
| struct SameSizeAsCSSValue { |
| uint32_t refCount; |
| uint32_t bitfields; |
| }; |
| |
| COMPILE_ASSERT(sizeof(CSSValue) == sizeof(SameSizeAsCSSValue), CSS_value_should_stay_small); |
| |
| bool CSSValue::isImplicitInitialValue() const |
| { |
| return m_classType == InitialClass && downcast<CSSInitialValue>(*this).isImplicit(); |
| } |
| |
| DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(CSSValue); |
| |
| CSSValue::Type CSSValue::cssValueType() const |
| { |
| if (isInheritedValue()) |
| return CSS_INHERIT; |
| if (isPrimitiveValue()) |
| return CSS_PRIMITIVE_VALUE; |
| if (isValueList()) |
| return CSS_VALUE_LIST; |
| if (isInitialValue()) |
| return CSS_INITIAL; |
| if (isUnsetValue()) |
| return CSS_UNSET; |
| if (isRevertValue()) |
| return CSS_REVERT; |
| return CSS_CUSTOM; |
| } |
| |
| bool CSSValue::traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const |
| { |
| if (is<CSSValueList>(*this)) |
| return downcast<CSSValueList>(*this).traverseSubresources(handler); |
| if (is<CSSFontFaceSrcValue>(*this)) |
| return downcast<CSSFontFaceSrcValue>(*this).traverseSubresources(handler); |
| if (is<CSSImageValue>(*this)) |
| return downcast<CSSImageValue>(*this).traverseSubresources(handler); |
| if (is<CSSCrossfadeValue>(*this)) |
| return downcast<CSSCrossfadeValue>(*this).traverseSubresources(handler); |
| if (is<CSSFilterImageValue>(*this)) |
| return downcast<CSSFilterImageValue>(*this).traverseSubresources(handler); |
| if (is<CSSImageSetValue>(*this)) |
| return downcast<CSSImageSetValue>(*this).traverseSubresources(handler); |
| return false; |
| } |
| |
| void CSSValue::collectDirectComputationalDependencies(HashSet<CSSPropertyID>& values) const |
| { |
| if (is<CSSPrimitiveValue>(*this)) |
| downcast<CSSPrimitiveValue>(*this).collectDirectComputationalDependencies(values); |
| } |
| |
| void CSSValue::collectDirectRootComputationalDependencies(HashSet<CSSPropertyID>& values) const |
| { |
| if (is<CSSPrimitiveValue>(*this)) |
| downcast<CSSPrimitiveValue>(*this).collectDirectRootComputationalDependencies(values); |
| } |
| |
| template<class ChildClassType> |
| inline static bool compareCSSValues(const CSSValue& first, const CSSValue& second) |
| { |
| return static_cast<const ChildClassType&>(first).equals(static_cast<const ChildClassType&>(second)); |
| } |
| |
| bool CSSValue::equals(const CSSValue& other) const |
| { |
| if (m_classType == other.m_classType) { |
| switch (m_classType) { |
| case AspectRatioClass: |
| return compareCSSValues<CSSAspectRatioValue>(*this, other); |
| case BorderImageSliceClass: |
| return compareCSSValues<CSSBorderImageSliceValue>(*this, other); |
| case CanvasClass: |
| return compareCSSValues<CSSCanvasValue>(*this, other); |
| case NamedImageClass: |
| return compareCSSValues<CSSNamedImageValue>(*this, other); |
| case CursorImageClass: |
| return compareCSSValues<CSSCursorImageValue>(*this, other); |
| case FilterImageClass: |
| return compareCSSValues<CSSFilterImageValue>(*this, other); |
| #if ENABLE(CSS_PAINTING_API) |
| case PaintImageClass: |
| return compareCSSValues<CSSPaintImageValue>(*this, other); |
| #endif |
| case FontClass: |
| return compareCSSValues<CSSFontValue>(*this, other); |
| case FontFaceSrcClass: |
| return compareCSSValues<CSSFontFaceSrcValue>(*this, other); |
| case FontPaletteValuesOverrideColorsClass: |
| return compareCSSValues<CSSFontPaletteValuesOverrideColorsValue>(*this, other); |
| case FontFeatureClass: |
| return compareCSSValues<CSSFontFeatureValue>(*this, other); |
| case FontVariationClass: |
| return compareCSSValues<CSSFontVariationValue>(*this, other); |
| case FunctionClass: |
| return compareCSSValues<CSSFunctionValue>(*this, other); |
| case LinearGradientClass: |
| return compareCSSValues<CSSLinearGradientValue>(*this, other); |
| case RadialGradientClass: |
| return compareCSSValues<CSSRadialGradientValue>(*this, other); |
| case ConicGradientClass: |
| return compareCSSValues<CSSConicGradientValue>(*this, other); |
| case CrossfadeClass: |
| return compareCSSValues<CSSCrossfadeValue>(*this, other); |
| case ImageClass: |
| return compareCSSValues<CSSImageValue>(*this, other); |
| case InheritedClass: |
| return compareCSSValues<CSSInheritedValue>(*this, other); |
| case InitialClass: |
| return compareCSSValues<CSSInitialValue>(*this, other); |
| case UnsetClass: |
| return compareCSSValues<CSSUnsetValue>(*this, other); |
| case RevertClass: |
| return compareCSSValues<CSSRevertValue>(*this, other); |
| case GridAutoRepeatClass: |
| return compareCSSValues<CSSGridAutoRepeatValue>(*this, other); |
| case GridIntegerRepeatClass: |
| return compareCSSValues<CSSGridIntegerRepeatValue>(*this, other); |
| case GridLineNamesClass: |
| return compareCSSValues<CSSGridLineNamesValue>(*this, other); |
| case GridTemplateAreasClass: |
| return compareCSSValues<CSSGridTemplateAreasValue>(*this, other); |
| case PrimitiveClass: |
| return compareCSSValues<CSSPrimitiveValue>(*this, other); |
| case ReflectClass: |
| return compareCSSValues<CSSReflectValue>(*this, other); |
| case ShadowClass: |
| return compareCSSValues<CSSShadowValue>(*this, other); |
| case CubicBezierTimingFunctionClass: |
| return compareCSSValues<CSSCubicBezierTimingFunctionValue>(*this, other); |
| case StepsTimingFunctionClass: |
| return compareCSSValues<CSSStepsTimingFunctionValue>(*this, other); |
| case SpringTimingFunctionClass: |
| return compareCSSValues<CSSSpringTimingFunctionValue>(*this, other); |
| case UnicodeRangeClass: |
| return compareCSSValues<CSSUnicodeRangeValue>(*this, other); |
| case ValueListClass: |
| return compareCSSValues<CSSValueList>(*this, other); |
| case LineBoxContainClass: |
| return compareCSSValues<CSSLineBoxContainValue>(*this, other); |
| case CalculationClass: |
| return compareCSSValues<CSSCalcValue>(*this, other); |
| case ImageSetClass: |
| return compareCSSValues<CSSImageSetValue>(*this, other); |
| case CSSContentDistributionClass: |
| return compareCSSValues<CSSContentDistributionValue>(*this, other); |
| case CustomPropertyClass: |
| return compareCSSValues<CSSCustomPropertyValue>(*this, other); |
| case VariableReferenceClass: |
| return compareCSSValues<CSSVariableReferenceValue>(*this, other); |
| case PendingSubstitutionValueClass: |
| return compareCSSValues<CSSPendingSubstitutionValue>(*this, other); |
| case FontStyleClass: |
| return compareCSSValues<CSSFontStyleValue>(*this, other); |
| case FontStyleRangeClass: |
| return compareCSSValues<CSSFontStyleRangeValue>(*this, other); |
| default: |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| } else if (is<CSSValueList>(*this) && !is<CSSValueList>(other)) |
| return downcast<CSSValueList>(*this).equals(other); |
| else if (!is<CSSValueList>(*this) && is<CSSValueList>(other)) |
| return static_cast<const CSSValueList&>(other).equals(*this); |
| return false; |
| } |
| |
| String CSSValue::cssText() const |
| { |
| switch (classType()) { |
| case AspectRatioClass: |
| return downcast<CSSAspectRatioValue>(*this).customCSSText(); |
| case BorderImageSliceClass: |
| return downcast<CSSBorderImageSliceValue>(*this).customCSSText(); |
| case CanvasClass: |
| return downcast<CSSCanvasValue>(*this).customCSSText(); |
| case NamedImageClass: |
| return downcast<CSSNamedImageValue>(*this).customCSSText(); |
| case CursorImageClass: |
| return downcast<CSSCursorImageValue>(*this).customCSSText(); |
| case FilterImageClass: |
| return downcast<CSSFilterImageValue>(*this).customCSSText(); |
| #if ENABLE(CSS_PAINTING_API) |
| case PaintImageClass: |
| return downcast<CSSPaintImageValue>(*this).customCSSText(); |
| #endif |
| case FontClass: |
| return downcast<CSSFontValue>(*this).customCSSText(); |
| case FontFaceSrcClass: |
| return downcast<CSSFontFaceSrcValue>(*this).customCSSText(); |
| case FontPaletteValuesOverrideColorsClass: |
| return downcast<CSSFontPaletteValuesOverrideColorsValue>(*this).customCSSText(); |
| case FontFeatureClass: |
| return downcast<CSSFontFeatureValue>(*this).customCSSText(); |
| case FontVariationClass: |
| return downcast<CSSFontVariationValue>(*this).customCSSText(); |
| case FunctionClass: |
| return downcast<CSSFunctionValue>(*this).customCSSText(); |
| case LinearGradientClass: |
| return downcast<CSSLinearGradientValue>(*this).customCSSText(); |
| case RadialGradientClass: |
| return downcast<CSSRadialGradientValue>(*this).customCSSText(); |
| case ConicGradientClass: |
| return downcast<CSSConicGradientValue>(*this).customCSSText(); |
| case CrossfadeClass: |
| return downcast<CSSCrossfadeValue>(*this).customCSSText(); |
| case ImageClass: |
| return downcast<CSSImageValue>(*this).customCSSText(); |
| case InheritedClass: |
| return downcast<CSSInheritedValue>(*this).customCSSText(); |
| case InitialClass: |
| return downcast<CSSInitialValue>(*this).customCSSText(); |
| case UnsetClass: |
| return downcast<CSSUnsetValue>(*this).customCSSText(); |
| case RevertClass: |
| return downcast<CSSRevertValue>(*this).customCSSText(); |
| case GridAutoRepeatClass: |
| return downcast<CSSGridAutoRepeatValue>(*this).customCSSText(); |
| case GridIntegerRepeatClass: |
| return downcast<CSSGridIntegerRepeatValue>(*this).customCSSText(); |
| case GridLineNamesClass: |
| return downcast<CSSGridLineNamesValue>(*this).customCSSText(); |
| case GridTemplateAreasClass: |
| return downcast<CSSGridTemplateAreasValue>(*this).customCSSText(); |
| case PrimitiveClass: |
| return downcast<CSSPrimitiveValue>(*this).customCSSText(); |
| case ReflectClass: |
| return downcast<CSSReflectValue>(*this).customCSSText(); |
| case ShadowClass: |
| return downcast<CSSShadowValue>(*this).customCSSText(); |
| case CubicBezierTimingFunctionClass: |
| return downcast<CSSCubicBezierTimingFunctionValue>(*this).customCSSText(); |
| case StepsTimingFunctionClass: |
| return downcast<CSSStepsTimingFunctionValue>(*this).customCSSText(); |
| case SpringTimingFunctionClass: |
| return downcast<CSSSpringTimingFunctionValue>(*this).customCSSText(); |
| case UnicodeRangeClass: |
| return downcast<CSSUnicodeRangeValue>(*this).customCSSText(); |
| case ValueListClass: |
| return downcast<CSSValueList>(*this).customCSSText(); |
| case ValuePairClass: |
| return downcast<CSSValuePair>(*this).customCSSText(); |
| case LineBoxContainClass: |
| return downcast<CSSLineBoxContainValue>(*this).customCSSText(); |
| case CalculationClass: |
| return downcast<CSSCalcValue>(*this).customCSSText(); |
| case ImageSetClass: |
| return downcast<CSSImageSetValue>(*this).customCSSText(); |
| case CSSContentDistributionClass: |
| return downcast<CSSContentDistributionValue>(*this).customCSSText(); |
| case CustomPropertyClass: |
| return downcast<CSSCustomPropertyValue>(*this).customCSSText(); |
| case VariableReferenceClass: |
| return downcast<CSSVariableReferenceValue>(*this).customCSSText(); |
| case PendingSubstitutionValueClass: |
| return downcast<CSSPendingSubstitutionValue>(*this).customCSSText(); |
| case FontStyleClass: |
| return downcast<CSSFontStyleValue>(*this).customCSSText(); |
| case FontStyleRangeClass: |
| return downcast<CSSFontStyleRangeValue>(*this).customCSSText(); |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return String(); |
| } |
| |
| ASCIILiteral CSSValue::separatorCSSText() const |
| { |
| switch (m_valueSeparator) { |
| case SpaceSeparator: |
| return " "_s; |
| case CommaSeparator: |
| return ", "_s; |
| case SlashSeparator: |
| return " / "_s; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| return " "_s; |
| } |
| |
| void CSSValue::destroy() |
| { |
| switch (classType()) { |
| case AspectRatioClass: |
| delete downcast<CSSAspectRatioValue>(this); |
| return; |
| case BorderImageSliceClass: |
| delete downcast<CSSBorderImageSliceValue>(this); |
| return; |
| case CanvasClass: |
| delete downcast<CSSCanvasValue>(this); |
| return; |
| case NamedImageClass: |
| delete downcast<CSSNamedImageValue>(this); |
| return; |
| case CursorImageClass: |
| delete downcast<CSSCursorImageValue>(this); |
| return; |
| case FontClass: |
| delete downcast<CSSFontValue>(this); |
| return; |
| case FontFaceSrcClass: |
| delete downcast<CSSFontFaceSrcValue>(this); |
| return; |
| case FontPaletteValuesOverrideColorsClass: |
| delete downcast<CSSFontPaletteValuesOverrideColorsValue>(this); |
| return; |
| case FontFeatureClass: |
| delete downcast<CSSFontFeatureValue>(this); |
| return; |
| case FontVariationClass: |
| delete downcast<CSSFontVariationValue>(this); |
| return; |
| case FunctionClass: |
| delete downcast<CSSFunctionValue>(this); |
| return; |
| case LinearGradientClass: |
| delete downcast<CSSLinearGradientValue>(this); |
| return; |
| case RadialGradientClass: |
| delete downcast<CSSRadialGradientValue>(this); |
| return; |
| case ConicGradientClass: |
| delete downcast<CSSConicGradientValue>(this); |
| return; |
| case CrossfadeClass: |
| delete downcast<CSSCrossfadeValue>(this); |
| return; |
| case ImageClass: |
| delete downcast<CSSImageValue>(this); |
| return; |
| case InheritedClass: |
| delete downcast<CSSInheritedValue>(this); |
| return; |
| case InitialClass: |
| delete downcast<CSSInitialValue>(this); |
| return; |
| case UnsetClass: |
| delete downcast<CSSUnsetValue>(this); |
| return; |
| case RevertClass: |
| delete downcast<CSSRevertValue>(this); |
| return; |
| case GridAutoRepeatClass: |
| delete downcast<CSSGridAutoRepeatValue>(this); |
| return; |
| case GridIntegerRepeatClass: |
| delete downcast<CSSGridIntegerRepeatValue>(this); |
| return; |
| case GridLineNamesClass: |
| delete downcast<CSSGridLineNamesValue>(this); |
| return; |
| case GridTemplateAreasClass: |
| delete downcast<CSSGridTemplateAreasValue>(this); |
| return; |
| case PrimitiveClass: |
| delete downcast<CSSPrimitiveValue>(this); |
| return; |
| case ReflectClass: |
| delete downcast<CSSReflectValue>(this); |
| return; |
| case ShadowClass: |
| delete downcast<CSSShadowValue>(this); |
| return; |
| case CubicBezierTimingFunctionClass: |
| delete downcast<CSSCubicBezierTimingFunctionValue>(this); |
| return; |
| case StepsTimingFunctionClass: |
| delete downcast<CSSStepsTimingFunctionValue>(this); |
| return; |
| case SpringTimingFunctionClass: |
| delete downcast<CSSSpringTimingFunctionValue>(this); |
| return; |
| case UnicodeRangeClass: |
| delete downcast<CSSUnicodeRangeValue>(this); |
| return; |
| case ValueListClass: |
| delete downcast<CSSValueList>(this); |
| return; |
| case ValuePairClass: |
| delete downcast<CSSValuePair>(this); |
| return; |
| case LineBoxContainClass: |
| delete downcast<CSSLineBoxContainValue>(this); |
| return; |
| case CalculationClass: |
| delete downcast<CSSCalcValue>(this); |
| return; |
| case ImageSetClass: |
| delete downcast<CSSImageSetValue>(this); |
| return; |
| case FilterImageClass: |
| delete downcast<CSSFilterImageValue>(this); |
| return; |
| #if ENABLE(CSS_PAINTING_API) |
| case PaintImageClass: |
| delete downcast<CSSPaintImageValue>(this); |
| return; |
| #endif |
| case CSSContentDistributionClass: |
| delete downcast<CSSContentDistributionValue>(this); |
| return; |
| case CustomPropertyClass: |
| delete downcast<CSSCustomPropertyValue>(this); |
| return; |
| case VariableReferenceClass: |
| delete downcast<CSSVariableReferenceValue>(this); |
| return; |
| case PendingSubstitutionValueClass: |
| delete downcast<CSSPendingSubstitutionValue>(this); |
| return; |
| case FontStyleClass: |
| delete downcast<CSSFontStyleValue>(this); |
| return; |
| case FontStyleRangeClass: |
| delete downcast<CSSFontStyleRangeValue>(this); |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| } |
| |
| Ref<DeprecatedCSSOMValue> CSSValue::createDeprecatedCSSOMWrapper(CSSStyleDeclaration& styleDeclaration) const |
| { |
| if (isImageValue()) |
| return downcast<CSSImageValue>(this)->createDeprecatedCSSOMWrapper(styleDeclaration); |
| if (isPrimitiveValue()) |
| return DeprecatedCSSOMPrimitiveValue::create(downcast<CSSPrimitiveValue>(*this), styleDeclaration); |
| if (isValueList()) |
| return DeprecatedCSSOMValueList::create(downcast<CSSValueList>(*this), styleDeclaration); |
| return DeprecatedCSSOMComplexValue::create(*this, styleDeclaration); |
| } |
| |
| bool CSSValue::treatAsInheritedValue(CSSPropertyID propertyID) const |
| { |
| return classType() == InheritedClass || (classType() == UnsetClass && CSSProperty::isInheritedProperty(propertyID)); |
| } |
| |
| bool CSSValue::treatAsInitialValue(CSSPropertyID propertyID) const |
| { |
| return classType() == InitialClass || (classType() == UnsetClass && !CSSProperty::isInheritedProperty(propertyID)); |
| } |
| |
| } |
