Easiest way to get the object type of an instance?

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Schwang

(Posted 2010) [#1]

Assuming I have an indefinite number of extended classes, ultimately I want an independant function I could use globally that takes an object instance as a parameter and returns its object type, i.e. whatever class it was instantiated from.

Is there a simple solution?

BladeRunner

(Posted 2010) [#2]

See reflection for this:

TID = TTypeID.forObject(myobject)
print TID.name()

Schwang

(Posted 2010) [#3]

Oh excellent, this is really useful! This way I can either discover which class an instance is from, or compare it to classes I know about to see if it is of that class type.

SuperStrict

Type A
	Field myValue:Int
End Type

Type C Extends A
	'Empty class
End Type

'Make some instances
Global aInst:A = New A
Global cInst:c = New C

'Give them values
aInst.myValue = 10
cInst.myValue = 22

'Discover what they are
printObjectClassName(aInst)
printObjectClassName(cInst)


Function printObjectClassName(parm_:Object)
	'Discover class name
	Local tID:TTypeId = TTypeId.ForObject(parm_)
	Print "Instance is from type " + tID.Name()
	
	'See if instance is a specific class, using the class name
	If tID = TTypeId.ForName("C")
		Print "Parameter object is of Class C."
	End If
	
	If tID = TTypeId.ForName("A")
		Print "Parameter object is of Class A."
	End If
	
	Print "--END--"
End Function

Many thanks Bladerunner.