Is convert string to executable code possible?

[RajaguruV]

Hi All,

Is it possible to convert string as executable code? like the below one.

For ex:

var fun1 = 'function myFun(arg){

     trace(arg);

}'

execute(fun1);

Thanks,

Guru

[JoãoCésar]

Hi.

Try this:

var fun1:Function = function myFun(arg)
{
    trace(arg);
};
this["fun1"]("working");

[RajaguruV]

Hi JoãoCésar,

Thanks for your quick reply. Its very nice. But I'm trying something different. Let me explain more.

I have a xml called "action_scripts.xml" and in that xml I have some functions inside CDATA. I get that xml data in flash and try to execute that scripts in run time. I will get that functions as string from the xml and I want it to convert as executable functions inside as3.

action_scripts.xml

<?xml version="1.0" encoding="utf-8"?>

<action_scripts>

     <action_script><![CDATA[function fun1(){var a=5; var b=5; var c = a+b; trace('result = '+c)}]]></action_script>

     <action_script><![CDATA[function fun2(){var a=5; var b=5; var c = a+b; trace('result = '+c)}]]></action_script>

</action_scripts>

test.fla

var urlLoader:URLLoader;

var urlRequest:URLRequest;

var loader:Loader;

var myXMLData:XML;

urlRequest = new URLRequest("action_scripts.xml");

urlLoader = new URLLoader(urlRequest);

urlLoader.addEventListener(Event.COMPLETE, urlLoaderEventComplete);

function urlLoaderEventComplete(e:Event){

myXMLData = new XML(e.target.data);

executeFun(myXMLData.action_script[0]);

}

function executeFun(fun){

trace(fun) // result as string -> "function fun1(){var a=5; var b=5; var c = a+b; trace('result = '+c)}"

var myFun = fun as Function;

this["myFun"](); // Here the code should work as real function

}

When I published, I'm getting the below error

TypeError: Error #1006: value is not a function.

How can I convert a value/string as real executable function? Is it possible? Please advice me .

Thanks,

Guru

[JoãoCésar]

Oh I see.

I think this thread is what you need: How to interpret code from string in as3? .

[RajaguruV]

Hi JoãoCésar,

Thanks you again for the reply.

I already checked that code. But, it seems that one is related to AS2 and not AS3. The eval() is no more in AS3 I think. Any other options?

Thanks,

Guru

[JoãoCésar]

There are some links in that thread to third party libraries that are alternatives to the eval function:

http://eval.hurlant.com/

http://code.google.com/p/as3scriptinglib/

If those don't work, you will have to consider using JavaScript's eval function through the ExternalInterface class:

Convert a string to an operator

[RajaguruV]

Thank you JoãoCésar. Let me try all.