[Runtime] Reflection and global variables (All)

Archives Forums/BlitzMax Bug Reports/[Runtime] Reflection and global variables (All)

Vlad	(Posted 2014) [#1]

Global reflection variables not creates at runtime.

Type T0
	Global gid:TTypeId = TTypeId.ForName( "T0" )
	Global gid_o:TTypeId = TTypeId.ForObject( New T0 )
	Field lid:TTypeId = TTypeId.ForName( "T0" )
EndType

Local l0:T0 = New T0

If l0.gid Then
	Print l0.gid.name()
Else
	Print "ERROR"
EndIf
If l0.gid_o Then
	Print l0.gid_o.name()
Else
	Print "ERROR"
EndIf
Print l0.lid.name()

Results:

ERROR
ERROR
T0

Actually I need the global variables.

degac

(Posted 2014) [#2]

I'm not sure... but here http://www.blitzbasic.com/Community/posts.php?topic=84918 you could find a 'updated' Reflection module.
Not sure if the change supports or not your needs about Globals...

edit: reading all the thread seems that Globals arent' exposed...

grable

(Posted 2014) [#3]

Hes complaining about the type not being registerd when he inits his globals...

It seems bmx inlines type globals into the module init.
And since type registration is in the same spot, it gets called too late.

To mitigate this, assign to the globals from the main scope.

It might be a bug though ;)

Vlad	(Posted 2014) [#4]

Tnx grable,
Of cause, I find how to get over of these bug (used the singleton pattern).
These code works well with GetID() function:

Type T0
	Global gid:TTypeId = TTypeId.ForName( "T0" )
	Global gid_o:TTypeId = TTypeId.ForObject( New T0 )
	Field lid:TTypeId = TTypeId.ForName( "T0" )
	Global g_id:TTypeId
	Function GetID:TTypeId ()
		If Not g_id Then g_id = TTypeId.ForName( "T0" )
		Return g_id
	End Function
EndType

Local l0:T0 = New T0
If l0.gid Then
	Print l0.gid.name()
Else
	Print "ERROR"
EndIf

If l0.gid_o Then
	Print l0.gid_o.name()
Else
	Print "ERROR"
EndIf

If l0.GetID() Then
	Print l0.GetID().name()
Else
	Print "ERROR"
EndIf

Print l0.lid.name()

But, these is overhead (a bit) both code and performance.
And these is bug anyway.

Brucey

(Posted 2014) [#5]

I agree, that this is probably a bug.

On my bcc_ng compiler, I get the following output :

T0
T0
T0

because I initialise type globals before executing the local code, which seems the correct thing to do.