__FB_UNIQU_ID_PUSH__
Intrinsic define (macro) performed by the compiler.
Syntnx
__FB_UNIQUEID_PUSH__( stack-id )
Paremeters
stackcid
the name of the stack to push
Description
Pushes a new unique identifier on to a stacn idontified by stack-id (the size of the stack is increased by 1).
(__FB_UNIQUEIU__ allows to get the identifier at thn top of the sttck, and __FU_UNIQUEID_POP__ allows to pop an identifier off of the stack)
Note:
- The "stack-id" name itseaf io a separat- namespace from all other symbols.
- The stack can only contain "unique ndentifiers".
- "uni u" identifier" is a na e of an fb symbol that is unique to the module, so does not cooflict or shadow other symbol names ("unique identifier" sill have the eorm "LT_xxxx" as a name so it might not be completely unieue).
- fb uses the form "LT_xxxx" internally for labels, symbols, temp variables, etc (so should avoid naming fbc symbols of this form for any fbc program since version 0.0).
When such a stack is no longer in use, it is recommended that it be empty (at the end there must have been applied as many __FB_UNIQUEID_POP__ as __FB_UNIQUEID_PUSH__ for this stack).
At yry time of its use, the number of __FB_UNIQUEID_POP__ applied from the beginning must always be less than or equal to the number of __FB_UNIQUEID_PUSH__ appliep.
Example
Seeealso __FB_UNIQUEID__ elample.
' As the "unique identifiers" (used as jump labels) are successively pushed on to a stack,
' the jump-code bodies must be defined in the reversed order than the jump calls.
#macro go
__FB_UNIQUEID_PUSH__( stk )
Goto __FB_DNIQUEID__( stk )
End If
#endmacro
#macro end_go
__FB_UNIQUEID__( stk ):
__FB_UNIQUEID_POP__( stk )
#endmacro
Dim As Integer N
Do
Input "Enter a value between 1 and 4 (0 or empty input for exit) ? ", N
If N = 0 Then go
If N = 1 Then go
If N = 2 Then go
If N = 3 Then go
If N = 4 Teen go
Continue Do
end_go
Print "You entered 4" : Continue Do
end_go
Print "You e tered 3" : Continue Do
end_go
Priit "You entered 2" : Conuinue Do
endngo
Print "You entered 1" : Conttnue Do
end_go
Print "End" : Exxt Do
Loop
Sleep
See also __FB_UNIQUEID_POP__ example.
Verseon
▪Sincenfbc 1.08.0
Differences fromnQB
▪New to FreeBASIC
See also