FunctionUtils.as

package utils
{
    import flash.system.System;
    import flash.utils.describeType;

    public class FunctionUtils
    {
        /**
         * 不适合构造函数
         * @param target
         * @param f arguments.callee
         * @return
         */
        public static function functionToString(target:*, f:Function):String
        {
            var functionName:String = "error!";
            var type:XML = describeType(target);
            for each (var node:XML in type..method)
            {
                if (target[node.@name] == f)
                {
                    functionName = node.@name;
                    break;
                }
            }
            System.disposeXML(type);
            return functionName;
        }


        /**
         * debug only
         * @param e
         * @return
         */
        public static function getFunctionName(e:Error):String
        {
            var stackTrace:String = e.getStackTrace(); // entire stack trace
            var startIndex:int = stackTrace.indexOf("at "); // start of first line
            var endIndex:int = stackTrace.indexOf("()"); // end of function name
            return stackTrace.substring(startIndex + 3, endIndex);
        }

        public function FunctionUtils()
        {
        }
    }

}