dojo.lang.isOfType = function()

in plugins/struts2-dojo-plugin/src/main/resources/org/apache/struts2/static/dojo/src/lang/type.js [65:130]
66 lines of code
31 McCabe index (conditional complexity)

dojo.lang.isOfType = function (value, type, keywordParameters) {
	var optional = false;
	if (keywordParameters) {
		optional = keywordParameters["optional"];
	}
	if (optional && ((value === null) || dojo.lang.isUndefined(value))) {
		return true;
	}
	if (dojo.lang.isArray(type)) {
		var arrayOfTypes = type;
		for (var i in arrayOfTypes) {
			var aType = arrayOfTypes[i];
			if (dojo.lang.isOfType(value, aType)) {
				return true;
			}
		}
		return false;
	} else {
		if (dojo.lang.isString(type)) {
			type = type.toLowerCase();
		}
		switch (type) {
		  case Array:
		  case "array":
			return dojo.lang.isArray(value);
		  case Function:
		  case "function":
			return dojo.lang.isFunction(value);
		  case String:
		  case "string":
			return dojo.lang.isString(value);
		  case Number:
		  case "number":
			return dojo.lang.isNumber(value);
		  case "numeric":
			return dojo.lang.isNumeric(value);
		  case Boolean:
		  case "boolean":
			return dojo.lang.isBoolean(value);
		  case Object:
		  case "object":
			return dojo.lang.isObject(value);
		  case "pureobject":
			return dojo.lang.isPureObject(value);
		  case "builtin":
			return dojo.lang.isBuiltIn(value);
		  case "alien":
			return dojo.lang.isAlien(value);
		  case "undefined":
			return dojo.lang.isUndefined(value);
		  case null:
		  case "null":
			return (value === null);
		  case "optional":
			dojo.deprecated("dojo.lang.isOfType(value, [type, \"optional\"])", "use dojo.lang.isOfType(value, type, {optional: true} ) instead", "0.5");
			return ((value === null) || dojo.lang.isUndefined(value));
		  default:
			if (dojo.lang.isFunction(type)) {
				return (value instanceof type);
			} else {
				dojo.raise("dojo.lang.isOfType() was passed an invalid type");
			}
		}
	}
	dojo.raise("If we get here, it means a bug was introduced above.");
};