[FLEX-34993] implicit super() constructor call receives subclass constructor params

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Apache FlexJS 0.5.0
• Fix Version/s: Apache FalconJX 0.6.0
• Component/s: Falcon, FlexJS
• Assignee: Alex Harui
• Reporter: Andy Dufilie
• Created: 11/Dec/15 21:57
• Updated: 23/Dec/15 18:23
• Resolved: 23/Dec/15 18:23

Description

AS input (2 files):

package foo.bar {
	public class MySuperClass {
		public function MySuperClass(superParam1:String = "Hello", superParam2:String = "World")
		{
			this.superString = superParam1 + superParam2;
		}
		public var superString:String;
	}
}

package foo.bar {
	public class MyExtendingClass extends MySuperClass {
		public function MyExtendingClass(extendingParam:String)
		{
			this.myExtendingString = extendingParam;
		}
		public var myExtendingString:String;
	}
}

JS output (relevant part only):

/**
 * @constructor
 * @extends {foo.bar.MySuperClass}
 * @param {string} extendingParam
 */
foo.bar.MyExtendingClass = function(extendingParam) {
  foo.bar.MyExtendingClass.base(this, 'constructor', extendingParam);
  this.myExtendingString = extendingParam;
};
goog.inherits(foo.bar.MyExtendingClass, foo.bar.MySuperClass);

The correct behavior would be to implicitly call the default constructor (no params):

  foo.bar.MyExtendingClass.base(this, 'constructor');

The current workaround is to explicitly call super() with no params in the subclass.