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vvmanyam
New User
Joined: 16 Apr 2008
Posts: 86
Location: Bangalore
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Hi,
Is it possible to add a label to the lines of a program based on a condition?
My requirement is to display "==MSG>" when ever I encounter an error, say a DISPLAY statement in a Cobol program.
But it would be difficult to go and check the entire program for messages. So, I want to add lables to the lines where ever I encounter an error in the program, with lable name as '.ErrAA', '.ErrAB', '.ErrAC' and so on.
Is this possible to do using REXX.
Regards,
Balu |
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Marso
REXX Moderator
Joined: 13 Mar 2006
Posts: 1353
Location: Israel
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First of all, it is possible to go to MSG lines by using "LOC MSGLINE",
but I this command is not well known, and there is no shortcut (LOC MSG would be OK, but it doesn't work!).
Anyway, to set a label on cursor line, use:
| Code: |
MyLabel = 'AA'
Address ISREDIT 'LABEL .ZCSR = .Err'MyLabel' 0' |
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Marso
REXX Moderator
Joined: 13 Mar 2006
Posts: 1353
Location: Israel
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To increment the label letters, I would code:
| Code: |
/* One time init */
LblLst = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
Lbl1 = 1
Lbl2 = 0
.
.
.
/* place label on line */
'LABEL .ZCSR = .Err'MakeLabel()' 0' |
The MakeLabel function is:
| Code: |
MakeLabel:
Lbl2 = Lbl2 + 1
If Lbl2 > 26 Then Do
Lbl1 = Lbl1 + 1
Lbl2 = 1
End
MyLbl = Substr(LblLst,Lbl1,1) || Substr(LblLst,Lbl2,1)
Return MyLbl |
It should work from AA to ZZ! |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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| Marso wrote: |
| It should work from AA to ZZ! |
".ZZ" labels are invalid - are not they? |
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Marso
REXX Moderator
Joined: 13 Mar 2006
Posts: 1353
Location: Israel
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True! but it's still OK as they are prefixed
(should have said from ErrAA to ErrZZ)  |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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oh..o o.., yup you are right...  . |
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vvmanyam
New User
Joined: 16 Apr 2008
Posts: 86
Location: Bangalore
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Thanks for all your effort in giving various solutions. I have your codes and they are working fine.
I just wanted to know how we can add the label to a line based on line no instead of adding to the current cursour position line.
Why because
I have coded like
| Code: |
NDX1 = NDX1 + 1
'ISREDIT (KLINE) = LINE ' NDX1
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to extract each line of the program and check for error in KLINE
and display a message like this:
| Code: |
'ISREDIT LINE_BEFORE' NDX1 '= MSGLINE' ERROR_MSG
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Just similar to this I need the label in line NDX1
so, I have tried giving
| Code: |
ADDRESS ISREDIT 'LABEL LINE ' NDX1 ' = .ER'MYLABEL' 0'
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But this is not working.
Please help me...
I have another doubt
what is use of ' 0' in the above statement?
Regards,
Balu |
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Marso
REXX Moderator
Joined: 13 Mar 2006
Posts: 1353
Location: Israel
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I have only one macro that sets labels on cursor lines,
so I had to look at the book. It says that works:
| Code: |
| ADDRESS ISREDIT 'LABEL ' NDX1 ' = .ER'MYLABEL' 0' |
The '0' is the level. It's optional. I turn again to the book:
| Quote: |
level The highest nesting level at which this label is visible to you or to a macro. Level 0 is the highest level. Labels at this level are visible to
you and to all levels of nested macros. Level 1 is not visible to you, but it is visible to all macros, and so on. The level can never exceed
the current nesting level. The maximum nesting level is 255. The level number defaults to the current nesting level.
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Maybe one day I will have use for hidden labels. Until then I'll keep putting 0... |
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vvmanyam
New User
Joined: 16 Apr 2008
Posts: 86
Location: Bangalore
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Thanks Marso! Its working!!
Regards,
Balu |
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Marso
REXX Moderator
Joined: 13 Mar 2006
Posts: 1353
Location: Israel
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| My pleasure ! |
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