Dynamic Function Calling

Question

I am attempting to dynamically populate a function at runtime and then have the ability to call this function. Anybody know how this could be done?

Answer 1

What you need is eval(). Unfortunately eval() is not available in AS3, although it is defined in ECMA script standard. (It was in AS1/2.)
Fortunately, there are some very clever people who produced their own implementations I will use D.eval by RIA 1 here. http://www.riaone.com/products/deval/
Let's say you have this XML:
<function name="exampleFunction" arg0="num:int" arg1="str:String" returns="String">return num + str</function>
First you have to convert it to a string in AS3 Function format:
function exampleFunction(num:int, str:String):String{return num + str};
Then evaluate it as Function, and execute it.
import r1.deval.D;
var xml:XML = <function name="exampleFunction" arg0="num:int" arg1="str:String" returns="String">return num + str</function>;
var functionString:String = "function " + xml.@name + "(" + xml.@arg0 + ", " + xml.@arg1 + "):" + xml.@returns + "{" + xml + "};";
var dynamicFunction:Object = D.parseFunctions(functionString);
trace(D.eval("exampleFunction(3, ' spacemen');", null, dynamicFunction));
Traces
3 spacemen