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 var CSSImageType;
    (function (CSSImageType) {
        CSSImageType[CSSImageType["URL"] = 0] = "URL";
        CSSImageType[CSSImageType["LINEAR_GRADIENT"] = 1] = "LINEAR_GRADIENT";
        CSSImageType[CSSImageType["RADIAL_GRADIENT"] = 2] = "RADIAL_GRADIENT";
    })(CSSImageType || (CSSImageType = {}));
    var isLinearGradient = function (background) {
        return background.type === CSSImageType.LINEAR_GRADIENT;
    };
    var isRadialGradient = function (background) {
        return background.type === CSSImageType.RADIAL_GRADIENT;
    };
    var CSSRadialShape;
    (function (CSSRadialShape) {
        CSSRadialShape[CSSRadialShape["CIRCLE"] = 0] = "CIRCLE";
        CSSRadialShape[CSSRadialShape["ELLIPSE"] = 1] = "ELLIPSE";
    })(CSSRadialShape || (CSSRadialShape = {}));
    var CSSRadialExtent;
    (function (CSSRadialExtent) {
        CSSRadialExtent[CSSRadialExtent["CLOSEST_SIDE"] = 0] = "CLOSEST_SIDE";
        CSSRadialExtent[CSSRadialExtent["FARTHEST_SIDE"] = 1] = "FARTHEST_SIDE";
        CSSRadialExtent[CSSRadialExtent["CLOSEST_CORNER"] = 2] = "CLOSEST_CORNER";
        CSSRadialExtent[CSSRadialExtent["FARTHEST_CORNER"] = 3] = "FARTHEST_CORNER";
    })(CSSRadialExtent || (CSSRadialExtent = {}));
    var image = {
        name: 'image',
        parse: function (value) {
            if (value.type === TokenType.URL_TOKEN) {
                var image_1 = { url: value.value, type: CSSImageType.URL };
                CacheStorage.getInstance().addImage(value.value);
                return image_1;
            }
            if (value.type === TokenType.FUNCTION) {
                var imageFunction = SUPPORTED_IMAGE_FUNCTIONS[value.name];
                if (typeof imageFunction === 'undefined') {
                    throw new Error("Attempting to parse an unsupported image function \"" + value.name + "\"");
                }
                return imageFunction(value.values);
            }
            throw new Error("Unsupported image type");
        }
    };