CODEWITHSUNDEEP
actionscript-3error-handling
Chowzen
Chowzen

Reputation: 321

induce error for debugging purposes?

Hypothetically, I have a switch that has 437 cases. I've identified every possible case (I think), and each is handled. I'm worried that I missed # 438, and want something in the Default to alert me of this.
I could put a 

trace("ERROR! Stackoverflow has detected your ginormous gaffe and suspended your account indefinitely!");

in there, but I'm worried that this error will occur 7 weeks from now and the trace will be lost among all of my other silly warning traces. I've considered having my Default do this: 

trace(myArray[-1]);

which would surely(?) give an error and stop the program, alerting me to my hideous oversight, but am wondering if there isn't some better, smarter way to go about detecting a possible error like this.
Anyone? Bueller?

Upvotes: 2

Views: 165

Answers (2)

Oleg Knaus
Oleg Knaus

Reputation: 300

The first option is to throw an exception:

throw new Error('Exception!!!')

but you wont get anything if you don't have debugger flashplayer

Another way is to show a popup: In case you use flashplayer in browser:

ExternalInterface.call("alert", "Exception!!!");

In case you use Flex Framework: 

Alert.show('Exception!!!')

You could try to highlite it somehow: 

trace(  "==========================================\n" + 
        "==========================================\n" +
        "==========================================\n" +
        "===============Exception!!!===============\n" + 
        "==========================================\n" +
        "==========================================\n" +
        "==========================================\n" +);

And the last option is a custom popup: 

import flash.text.TextField;
import flash.text.TextFieldAutoSize;

const theStage:Stage = MovieClip(root).stage;
const tf:TextField = new TextField();
tf.text = "Exception!!!";
tf.autoSize = TextFieldAutoSize.LEFT;
tf.x = theStage.stageWidth - tf.width  >> 1;
tf.y = theStage.stageHeight - tf.height  >> 1;
tf.border = true;
tf.addEventListener(MouseEvent.CLICK, function(e:MouseEvent){
    e.currentTarget.parent.removeChild(e.currentTarget);
})
theStage.addChild(tf);

Upvotes: 3

Nbooo
Nbooo

Reputation: 865

Why not to throw an error? 

default: 
    throw new Error("Default reached");

Upvotes: 5

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