PathSegmentData SVGPathByteStreamSource::parseSegment()
{
    ASSERT(hasMoreData());
    PathSegmentData segment;
    segment.command = static_cast<SVGPathSegType>(readSVGSegmentType());

    switch (segment.command) {
    case PathSegCurveToCubicRel:
    case PathSegCurveToCubicAbs:
        segment.point1 = readFloatPoint();
        /* fall through */
    case PathSegCurveToCubicSmoothRel:
    case PathSegCurveToCubicSmoothAbs:
        segment.point2 = readFloatPoint();
        /* fall through */
    case PathSegMoveToRel:
    case PathSegMoveToAbs:
    case PathSegLineToRel:
    case PathSegLineToAbs:
    case PathSegCurveToQuadraticSmoothRel:
    case PathSegCurveToQuadraticSmoothAbs:
        segment.targetPoint = readFloatPoint();
        break;
    case PathSegLineToHorizontalRel:
    case PathSegLineToHorizontalAbs:
        segment.targetPoint.setX(readFloat());
        break;
    case PathSegLineToVerticalRel:
    case PathSegLineToVerticalAbs:
        segment.targetPoint.setY(readFloat());
        break;
    case PathSegClosePath:
        break;
    case PathSegCurveToQuadraticRel:
    case PathSegCurveToQuadraticAbs:
        segment.point1 = readFloatPoint();
        segment.targetPoint = readFloatPoint();
        break;
    case PathSegArcRel:
    case PathSegArcAbs: {
        segment.arcRadii() = readFloatPoint();
        segment.setArcAngle(readFloat());
        segment.arcLarge = readFlag();
        segment.arcSweep = readFlag();
        segment.targetPoint = readFloatPoint();
        break;
    }
    default:
        ASSERT_NOT_REACHED();
    }
    return segment;
}
PathSegmentData consumeInterpolableArc(const InterpolableValue& value,
                                       SVGPathSegType segType,
                                       PathCoordinates& coordinates) {
  const InterpolableList& list = toInterpolableList(value);
  bool isAbsolute = isAbsolutePathSegType(segType);
  PathSegmentData segment;
  segment.command = segType;
  segment.targetPoint.setX(consumeInterpolableCoordinateAxis(
      list.get(0), isAbsolute, coordinates.currentX));
  segment.targetPoint.setY(consumeInterpolableCoordinateAxis(
      list.get(1), isAbsolute, coordinates.currentY));
  segment.arcRadii().setX(toInterpolableNumber(list.get(2))->value());
  segment.arcRadii().setY(toInterpolableNumber(list.get(3))->value());
  segment.setArcAngle(toInterpolableNumber(list.get(4))->value());
  segment.arcLarge = toInterpolableBool(list.get(5))->value();
  segment.arcSweep = toInterpolableBool(list.get(6))->value();
  return segment;
}