Parker Smith Software

 

Debugging a function 'caller' in AS3

By Brian Webb

13 Jan 2011

 So I was recently trying to track down a bug in an Adobe AIR application that we've been working on for the past year.  Needless to say the application is pretty big and I had isolated the bug to a particular function.  The problem is that I needed to know what other function was calling it when the error was being encountered and that could have been a couple dozen locations.  

Here's a nice little code snippet that I placed in the buggy function to see who was calling it:

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var stackTrace:String;

try { throw new Error(); }
catch (e:Error) { stackTrace = e.getStackTrace(); }

var lines:Array = stackTrace.split("\n");
var isDebug:Boolean = (lines[1] as String).indexOf('[') != -1;

var path:String;
var line:int = -1;

if(isDebug)
{
        var regex:RegExp = /at\x20(.+?)\[(.+?)\]/i;
        var matches:Array = regex.exec(lines[2]);
        
        path = matches[1];
        
        //file:line = matches[2]
        //windows == 2 because of drive:\
        line = matches[2].split(':')[2];
}
else
{
        path = (lines[2] as String).substring(4);
}

trace("\n\n\nmyFunction(" + $animTime + ", " + $scaleMultipler + ", " + (($options == null)? "options=null" : "options={...}" )  + ");");
trace("myFunction caller: " + path + (line != -1 ? '[' + line.toString() + ']' : '') + "\n\n\n");
 
 
 
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January 13, 2011 - Brian Webb
Debugging a function 'caller' in AS3
0
 
October 26, 2010 - Brian Webb
Regex find and replace
0