var gmlReadODataSpatialValue = function()

in JSLib/src/odata-gml.js [428:491]
47 lines of code
12 McCabe index (conditional complexity)

    var gmlReadODataSpatialValue = function (domElement, isGeography) {
        /// <summary>Reads the value of a GML DOM element a spatial value in an OData XML document.</summary>
        /// <param name="domElement">DOM element.</param>
        /// <param name="isGeography" type="Boolean" Optional="True">Flag indicating if the value uses a geographic reference system or not.<param>
        /// <remarks>
        ///    When using a geographic reference system, the first component of all the coordinates in each <pos> element in the GML DOM tree is the Latitude and
        ///    will be deserialized as the second component of each position coordinates in the resulting GeoJSON object.
        /// </remarks>
        /// <returns type="Array">Array containing an array of doubles for each coordinate of the polygon.</returns>

        var localName = xmlLocalName(domElement);
        var reader;

        switch (localName) {
            case "Point":
                reader = gmlReadODataPoint;
                break;
            case "Polygon":
                reader = gmlReadODataPolygon;
                break;
            case "LineString":
                reader = gmlReadODataLineString;
                break;
            case "MultiPoint":
                reader = gmlReadODataMultiPoint;
                break;
            case "MultiCurve":
                reader = gmlReadODataMultiLineString;
                break;
            case "MultiSurface":
                reader = gmlReadODataMultiPolygon;
                break;
            case "MultiGeometry":
                reader = gmlReadODataCollection;
                break;
            default:
                throw { message: "Unsupported element: " + localName, element: domElement };
        }

        var value = reader(domElement, isGeography);
        // Read the CRS
        // WCF Data Services qualifies the srsName attribute withing the GML namespace; however
        // other end points might no do this as per the standard.

        var srsName = xmlAttributeValue(domElement, "srsName", gmlXmlNs) ||
                      xmlAttributeValue(domElement, "srsName");

        if (srsName) {
            if (srsName.indexOf(gmlSrsPrefix) !== 0) {
                throw { message: "Unsupported srs name: " + srsName, element: domElement };
            }

            var crsId = srsName.substring(gmlSrsPrefix.length);
            if (crsId) {
                value.crs = {
                    type: "name",
                    properties: {
                        name: "EPSG:" + crsId
                    }
                };
            }
        }
        return value;
    };