bool AnimatablePath::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    // Default interpolation is used if the paths have different lengths,
    // or the paths have a segment with different types (ignoring "relativeness").

    const StylePath* toPath = toAnimatablePath(value)->path();
    if (!m_path || !toPath)
        return true;
    SVGPathByteStreamSource fromSource(path()->byteStream());
    SVGPathByteStreamSource toSource(toPath->byteStream());

    while (fromSource.hasMoreData()) {
        if (!toSource.hasMoreData())
            return true;

        PathSegmentData fromSeg = fromSource.parseSegment();
        PathSegmentData toSeg = toSource.parseSegment();
        ASSERT(fromSeg.command != PathSegUnknown);
        ASSERT(toSeg.command != PathSegUnknown);

        if (toAbsolutePathSegType(fromSeg.command) != toAbsolutePathSegType(toSeg.command))
            return true;
    }

    return toSource.hasMoreData();
}
PassRefPtr<AnimatableValue> AnimatablePath::interpolateTo(const AnimatableValue* value, double fraction) const
{
    if (usesDefaultInterpolationWith(value))
        return defaultInterpolateTo(this, value, fraction);

    std::unique_ptr<SVGPathByteStream> byteStream = SVGPathByteStream::create();
    SVGPathByteStreamBuilder builder(*byteStream);

    SVGPathByteStreamSource fromSource(path()->byteStream());
    SVGPathByteStreamSource toSource(toAnimatablePath(value)->path()->byteStream());

    SVGPathBlender blender(&fromSource, &toSource, &builder);
    bool ok = blender.blendAnimatedPath(fraction);
    ASSERT_UNUSED(ok, ok);
    return AnimatablePath::create(StylePath::create(std::move(byteStream)));
}
bool AnimatablePath::equalTo(const AnimatableValue* value) const
{
    return dataEquivalent(m_path.get(), toAnimatablePath(value)->path());
}
// FIXME: Generate this function.
void AnimatedStyleBuilder::applyProperty(CSSPropertyID property, StyleResolverState& state, const AnimatableValue* value)
{
    ASSERT(CSSPropertyMetadata::isInterpolableProperty(property));
    if (value->isUnknown()) {
        StyleBuilder::applyProperty(property, state, toAnimatableUnknown(value)->toCSSValue().get());
        return;
    }
    ComputedStyle* style = state.style();
    switch (property) {
    case CSSPropertyBackgroundColor:
        style->setBackgroundColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkBackgroundColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyBackgroundImage:
        setOnFillLayers<CSSPropertyBackgroundImage>(style->accessBackgroundLayers(), value, state);
        return;
    case CSSPropertyBackgroundPositionX:
        setOnFillLayers<CSSPropertyBackgroundPositionX>(style->accessBackgroundLayers(), value, state);
        return;
    case CSSPropertyBackgroundPositionY:
        setOnFillLayers<CSSPropertyBackgroundPositionY>(style->accessBackgroundLayers(), value, state);
        return;
    case CSSPropertyBackgroundSize:
        setOnFillLayers<CSSPropertyBackgroundSize>(style->accessBackgroundLayers(), value, state);
        return;
    case CSSPropertyBaselineShift:
        style->accessSVGStyle().setBaselineShift(BS_LENGTH);
        style->accessSVGStyle().setBaselineShiftValue(animatableValueToLength(value, state));
        return;
    case CSSPropertyBorderBottomColor:
        style->setBorderBottomColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkBorderBottomColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyBorderBottomLeftRadius:
        style->setBorderBottomLeftRadius(animatableValueToLengthSize(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyBorderBottomRightRadius:
        style->setBorderBottomRightRadius(animatableValueToLengthSize(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyBorderBottomWidth:
        style->setBorderBottomWidth(animatableLineWidthClamp<unsigned>(value));
        return;
    case CSSPropertyBorderImageOutset:
        style->setBorderImageOutset(animatableValueToBorderImageLengthBox(value, state));
        return;
    case CSSPropertyBorderImageSlice:
        style->setBorderImageSlices(animatableValueToLengthBox(toAnimatableLengthBoxAndBool(value)->box(), state, ValueRangeNonNegative));
        style->setBorderImageSlicesFill(toAnimatableLengthBoxAndBool(value)->flag());
        return;
    case CSSPropertyBorderImageSource:
        style->setBorderImageSource(state.styleImage(property, *toAnimatableImage(value)->toCSSValue()));
        return;
    case CSSPropertyBorderImageWidth:
        style->setBorderImageWidth(animatableValueToBorderImageLengthBox(value, state));
        return;
    case CSSPropertyBorderLeftColor:
        style->setBorderLeftColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkBorderLeftColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyBorderLeftWidth:
        style->setBorderLeftWidth(animatableLineWidthClamp<unsigned>(value));
        return;
    case CSSPropertyBorderRightColor:
        style->setBorderRightColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkBorderRightColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyBorderRightWidth:
        style->setBorderRightWidth(animatableLineWidthClamp<unsigned>(value));
        return;
    case CSSPropertyBorderTopColor:
        style->setBorderTopColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkBorderTopColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyBorderTopLeftRadius:
        style->setBorderTopLeftRadius(animatableValueToLengthSize(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyBorderTopRightRadius:
        style->setBorderTopRightRadius(animatableValueToLengthSize(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyBorderTopWidth:
        style->setBorderTopWidth(animatableLineWidthClamp<unsigned>(value));
        return;
    case CSSPropertyBottom:
        style->setBottom(animatableValueToLength(value, state));
        return;
    case CSSPropertyBoxShadow:
        style->setBoxShadow(toAnimatableShadow(value)->shadowList());
        return;
    case CSSPropertyClip:
        style->setClip(animatableValueToLengthBox(value, state));
        return;
    case CSSPropertyColor:
        style->setColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyFillOpacity:
        style->setFillOpacity(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, 1));
        return;
    case CSSPropertyFill:
        {
            const AnimatableSVGPaint* svgPaint = toAnimatableSVGPaint(value);
            style->accessSVGStyle().setFillPaint(svgPaint->paintType(), svgPaint->getColor(), svgPaint->uri(), true, false);
            style->accessSVGStyle().setFillPaint(svgPaint->visitedLinkPaintType(), svgPaint->visitedLinkColor(), svgPaint->visitedLinkURI(), false, true);
        }
        return;
    case CSSPropertyFlexGrow:
        style->setFlexGrow(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0));
        return;
    case CSSPropertyFlexShrink:
        style->setFlexShrink(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0));
        return;
    case CSSPropertyFlexBasis:
        style->setFlexBasis(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyFloodColor:
        style->setFloodColor(toAnimatableColor(value)->getColor());
        return;
    case CSSPropertyFloodOpacity:
        style->setFloodOpacity(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, 1));
        return;
    case CSSPropertyFontSize:
        state.fontBuilder().setSize(animatableValueToFontSize(value));
        return;
    case CSSPropertyFontSizeAdjust:
        state.fontBuilder().setSizeAdjust(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0));
        return;
    case CSSPropertyFontStretch:
        state.fontBuilder().setStretch(animatableValueToFontStretch(value));
        return;
    case CSSPropertyFontWeight:
        state.fontBuilder().setWeight(animatableValueToFontWeight(value));
        return;
    case CSSPropertyHeight:
        style->setHeight(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyLeft:
        style->setLeft(animatableValueToLength(value, state));
        return;
    case CSSPropertyLightingColor:
        style->setLightingColor(toAnimatableColor(value)->getColor());
        return;
    case CSSPropertyLineHeight:
        if (value->isLength())
            style->setLineHeight(animatableValueToLength(value, state, ValueRangeNonNegative));
        else
            style->setLineHeight(Length(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0), Percent));
        return;
    case CSSPropertyListStyleImage:
        style->setListStyleImage(state.styleImage(property, *toAnimatableImage(value)->toCSSValue()));
        return;
    case CSSPropertyLetterSpacing:
        style->setLetterSpacing(clampTo<float>(toAnimatableDouble(value)->toDouble()));
        return;
    case CSSPropertyMarginBottom:
        style->setMarginBottom(animatableValueToLength(value, state));
        return;
    case CSSPropertyMarginLeft:
        style->setMarginLeft(animatableValueToLength(value, state));
        return;
    case CSSPropertyMarginRight:
        style->setMarginRight(animatableValueToLength(value, state));
        return;
    case CSSPropertyMarginTop:
        style->setMarginTop(animatableValueToLength(value, state));
        return;
    case CSSPropertyMaxHeight:
        style->setMaxHeight(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyMaxWidth:
        style->setMaxWidth(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyMinHeight:
        style->setMinHeight(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyMinWidth:
        style->setMinWidth(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyObjectPosition:
        style->setObjectPosition(animatableValueToLengthPoint(value, state));
        return;
    case CSSPropertyOpacity:
        // Avoiding a value of 1 forces a layer to be created.
        style->setOpacity(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, nextafterf(1, 0)));
        return;
    case CSSPropertyOrphans:
        style->setOrphans(clampTo<short>(round(toAnimatableDouble(value)->toDouble()), 1));
        return;
    case CSSPropertyOutlineColor:
        style->setOutlineColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkOutlineColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyOutlineOffset:
        style->setOutlineOffset(animatableValueClampTo<int>(value));
        return;
    case CSSPropertyOutlineWidth:
        style->setOutlineWidth(animatableLineWidthClamp<unsigned short>(value));
        return;
    case CSSPropertyPaddingBottom:
        style->setPaddingBottom(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyPaddingLeft:
        style->setPaddingLeft(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyPaddingRight:
        style->setPaddingRight(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyPaddingTop:
        style->setPaddingTop(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyRight:
        style->setRight(animatableValueToLength(value, state));
        return;
    case CSSPropertyStrokeWidth:
        style->setStrokeWidth(animatableValueToUnzoomedLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyStopColor:
        style->setStopColor(toAnimatableColor(value)->getColor());
        return;
    case CSSPropertyStopOpacity:
        style->setStopOpacity(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, 1));
        return;
    case CSSPropertyStrokeDasharray:
        style->setStrokeDashArray(toAnimatableStrokeDasharrayList(value)->toSVGDashArray(style->effectiveZoom()));
        return;
    case CSSPropertyStrokeDashoffset:
        style->setStrokeDashOffset(animatableValueToLength(value, state));
        return;
    case CSSPropertyStrokeMiterlimit:
        style->setStrokeMiterLimit(clampTo<float>(toAnimatableDouble(value)->toDouble(), 1));
        return;
    case CSSPropertyStrokeOpacity:
        style->setStrokeOpacity(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, 1));
        return;
    case CSSPropertyStroke:
        {
            const AnimatableSVGPaint* svgPaint = toAnimatableSVGPaint(value);
            style->accessSVGStyle().setStrokePaint(svgPaint->paintType(), svgPaint->getColor(), svgPaint->uri(), true, false);
            style->accessSVGStyle().setStrokePaint(svgPaint->visitedLinkPaintType(), svgPaint->visitedLinkColor(), svgPaint->visitedLinkURI(), false, true);
        }
        return;
    case CSSPropertyTextDecorationColor:
        style->setTextDecorationColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkTextDecorationColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyTextIndent:
        style->setTextIndent(animatableValueToLength(value, state));
        return;
    case CSSPropertyTextShadow:
        style->setTextShadow(toAnimatableShadow(value)->shadowList());
        return;
    case CSSPropertyTop:
        style->setTop(animatableValueToLength(value, state));
        return;
    case CSSPropertyWebkitBorderHorizontalSpacing:
        style->setHorizontalBorderSpacing(animatableValueClampTo<unsigned short>(value));
        return;
    case CSSPropertyWebkitBorderVerticalSpacing:
        style->setVerticalBorderSpacing(animatableValueClampTo<unsigned short>(value));
        return;
    case CSSPropertyWebkitClipPath:
        style->setClipPath(toAnimatableClipPathOperation(value)->clipPathOperation());
        return;
    case CSSPropertyColumnCount:
        style->setColumnCount(clampTo<unsigned short>(round(toAnimatableDouble(value)->toDouble()), 1));
        return;
    case CSSPropertyColumnGap:
        style->setColumnGap(clampTo(toAnimatableDouble(value)->toDouble(), 0));
        return;
    case CSSPropertyColumnRuleColor:
        style->setColumnRuleColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkColumnRuleColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyColumnWidth:
        style->setColumnWidth(clampTo(toAnimatableDouble(value)->toDouble(), std::numeric_limits<float>::epsilon()));
        return;
    case CSSPropertyColumnRuleWidth:
        style->setColumnRuleWidth(animatableLineWidthClamp<unsigned short>(value));
        return;
    case CSSPropertyWebkitFilter:
        style->setFilter(toAnimatableFilterOperations(value)->operations());
        return;
    case CSSPropertyBackdropFilter:
        style->setBackdropFilter(toAnimatableFilterOperations(value)->operations());
        return;
    case CSSPropertyWebkitMaskBoxImageOutset:
        style->setMaskBoxImageOutset(animatableValueToBorderImageLengthBox(value, state));
        return;
    case CSSPropertyWebkitMaskBoxImageSlice:
        style->setMaskBoxImageSlices(animatableValueToLengthBox(toAnimatableLengthBoxAndBool(value)->box(), state, ValueRangeNonNegative));
        style->setMaskBoxImageSlicesFill(toAnimatableLengthBoxAndBool(value)->flag());
        return;
    case CSSPropertyWebkitMaskBoxImageSource:
        style->setMaskBoxImageSource(state.styleImage(property, *toAnimatableImage(value)->toCSSValue()));
        return;
    case CSSPropertyWebkitMaskBoxImageWidth:
        style->setMaskBoxImageWidth(animatableValueToBorderImageLengthBox(value, state));
        return;
    case CSSPropertyWebkitMaskImage:
        setOnFillLayers<CSSPropertyWebkitMaskImage>(style->accessMaskLayers(), value, state);
        return;
    case CSSPropertyWebkitMaskPositionX:
        setOnFillLayers<CSSPropertyWebkitMaskPositionX>(style->accessMaskLayers(), value, state);
        return;
    case CSSPropertyWebkitMaskPositionY:
        setOnFillLayers<CSSPropertyWebkitMaskPositionY>(style->accessMaskLayers(), value, state);
        return;
    case CSSPropertyWebkitMaskSize:
        setOnFillLayers<CSSPropertyWebkitMaskSize>(style->accessMaskLayers(), value, state);
        return;
    case CSSPropertyPerspective:
        style->setPerspective(value->isDouble() ? clampTo<float>(toAnimatableDouble(value)->toDouble()) : 0);
        return;
    case CSSPropertyPerspectiveOrigin:
        style->setPerspectiveOrigin(animatableValueToLengthPoint(value, state));
        return;
    case CSSPropertyShapeOutside:
        style->setShapeOutside(toAnimatableShapeValue(value)->shapeValue());
        return;
    case CSSPropertyShapeMargin:
        style->setShapeMargin(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyShapeImageThreshold:
        style->setShapeImageThreshold(clampTo<float>(toAnimatableDouble(value)->toDouble(), 0, 1));
        return;
    case CSSPropertyWebkitTextStrokeColor:
        style->setTextStrokeColor(toAnimatableColor(value)->getColor());
        style->setVisitedLinkTextStrokeColor(toAnimatableColor(value)->visitedLinkColor());
        return;
    case CSSPropertyTransform: {
        const TransformOperations& operations = toAnimatableTransform(value)->transformOperations();
        // FIXME: This normalization (handling of 'none') should be performed at input in AnimatableValueFactory.
        if (operations.size() == 0) {
            style->setTransform(TransformOperations(true));
            return;
        }
        double sourceZoom = toAnimatableTransform(value)->zoom();
        double destinationZoom = style->effectiveZoom();
        style->setTransform(sourceZoom == destinationZoom ? operations : operations.zoom(destinationZoom / sourceZoom));
        return;
    }
    case CSSPropertyTranslate: {
        TranslateTransformOperation* translate = toTranslateTransformOperation(animatableValueToTransformOperation(value, TransformOperation::Translate3D));
        double sourceZoom = toAnimatableTransform(value)->zoom();
        double destinationZoom = style->effectiveZoom();
        style->setTranslate(sourceZoom == destinationZoom ? translate : translate->zoomTranslate(destinationZoom / sourceZoom));
        return;
    }
    case CSSPropertyRotate: {
        style->setRotate(toRotateTransformOperation(animatableValueToTransformOperation(value, TransformOperation::Rotate3D)));
        return;
    }
    case CSSPropertyScale: {
        style->setScale(toScaleTransformOperation(animatableValueToTransformOperation(value, TransformOperation::Scale3D)));
        return;
    }
    case CSSPropertyTransformOrigin:
        style->setTransformOrigin(animatableValueToTransformOrigin(value, state));
        return;
    case CSSPropertyMotionOffset:
        style->setMotionOffset(animatableValueToLength(value, state));
        return;
    case CSSPropertyMotionRotation:
        style->setMotionRotation(StyleMotionRotation(
            toAnimatableDoubleAndBool(value)->toDouble(),
            toAnimatableDoubleAndBool(value)->flag() ? MotionRotationAuto : MotionRotationFixed));
        return;
    case CSSPropertyWebkitPerspectiveOriginX:
        style->setPerspectiveOriginX(animatableValueToLength(value, state));
        return;
    case CSSPropertyWebkitPerspectiveOriginY:
        style->setPerspectiveOriginY(animatableValueToLength(value, state));
        return;
    case CSSPropertyWebkitTransformOriginX:
        style->setTransformOriginX(animatableValueToLength(value, state));
        return;
    case CSSPropertyWebkitTransformOriginY:
        style->setTransformOriginY(animatableValueToLength(value, state));
        return;
    case CSSPropertyWebkitTransformOriginZ:
        style->setTransformOriginZ(toAnimatableDouble(value)->toDouble());
        return;
    case CSSPropertyWidows:
        style->setWidows(clampTo<short>(round(toAnimatableDouble(value)->toDouble()), 1));
        return;
    case CSSPropertyWidth:
        style->setWidth(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyWordSpacing:
        style->setWordSpacing(clampTo<float>(toAnimatableDouble(value)->toDouble()));
        return;
    case CSSPropertyVerticalAlign:
        style->setVerticalAlignLength(animatableValueToLength(value, state));
        return;
    case CSSPropertyVisibility:
        style->setVisibility(toAnimatableVisibility(value)->visibility());
        return;
    case CSSPropertyZIndex:
        style->setZIndex(clampTo<int>(round(toAnimatableDouble(value)->toDouble())));
        return;
    case CSSPropertyD:
        style->setD(toAnimatablePath(value)->path());
        return;
    case CSSPropertyCx:
        style->setCx(animatableValueToLength(value, state));
        return;
    case CSSPropertyCy:
        style->setCy(animatableValueToLength(value, state));
        return;
    case CSSPropertyX:
        style->setX(animatableValueToLength(value, state));
        return;
    case CSSPropertyY:
        style->setY(animatableValueToLength(value, state));
        return;
    case CSSPropertyR:
        style->setR(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyRx:
        style->setRx(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;
    case CSSPropertyRy:
        style->setRy(animatableValueToLength(value, state, ValueRangeNonNegative));
        return;

    default:
        ASSERT_NOT_REACHED();
    }
}