CODEWITHSUNDEEP
actionscript-3flashapache-flex
Drahcir
Drahcir

Reputation: 11982

Limit argument type to package, possible?

In AS3, the below method accepts a parameter of any type:

public function myFunc(data:*) :void

Is it possible to limit the type to a specific package? Something like this maybe:

public function myFunc(data:(my.package:*)) //Accepts any type from my.package

Upvotes: 1

Views: 54

Answers (2)

Chunky Chunk
Chunky Chunk

Reputation: 17237

This sounds like a design issue. One way to make this work during compile is if the parameter type is a custom class:

public function myFunc(data:MyCustomClass):void

Assuming that all the classes within my.package are varied, you could create a custom base class that extends Object and have all of your classes within my.package extend from this base class. Of course, If, however, the inheritance of your my.package classes is less broad you wouldn't need to reach so far. For example, you should only extend from DisplayObject if all the classes within my.package are of that type.

There may also be a way to accomplish what you want using namespaces, but I'm unsure.

Upvotes: 1

Vesper
Vesper

Reputation: 18757

It is possible, but will only have type control at runtime.

import flash.utils.getQualifiedClassName;
public function myFunc(data:*):void {
    if (data is Object) {
        var fqcn:String=getQualifiedClassName(data);
        if (fqcn.slice(0,10)!='my.package') return; // otherwise work
        // work here
    } // simple types process if needed
}

Upvotes: 3

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