276 Added Support on EXCEPTION in CALLs

[AkashKumar7902]

Fixes: #276

[Rune-Christensen]

Hi @AkashKumar7902
Thank you for the pull request.
I am not sure that the pull request solves the issue.
I am aware that the example in the issue only lists a perform statement inside the ON EXCEPTION clause.
But any COBOL statement is valid inside the ON EXCEPTION clause, there can be multiple lines, and even a new CALL with its own ON EXCEPTION clause.

And please add tests that verifies that the changes fixes the issue.

Regards,
Rune

[AkashKumar7902]

@Rune-Christensen
Thanks for the clarification.

Here is my another idea:

In the endOfStatement function, if the current line contains CALL verb then it will continue returning false until it finds an equal number of END-CALL verb as CALL verb in the current line or if it encounters a terminating verb in the next line.

Here is a list of terminating verbs. Please Suggest addition/deletion(s) if any.
GO GOBACK STOP EXIT END

I would love to have feedback on this approach.

[Rune-Christensen]

Hi @AkashKumar7902
I am afraid that will also not work.
The issue is that in this code:
CALL "A" USING A-VALUES
MOVE "SOME-VALUE" TO B-VALUES
The MOVE statement is the statement that indicates that the CALL statement is finished.

You have to identify the ON EXCEPTION phrase, and then look for a END-CALL or a period >>.<< as the keys to determine when the CALL is finished.

Also "terminating" verbs, doesn't work like that.
This is invalid COBOL:
CALL "A" USING A-VALUES
ON EXCEPTION
GOBACK
A-NEW-PARAGRAPH.

You will get a compile error, because the CALL ON EXCEPTION statement is not finished, before the next paragraph definition.
Terminating verbs still have to be inside valid COBOL, and have to be encapsulated by END-CALL END-IF and so on statements.

You should not be considering terminating verbs in the code you are building for this, they are just as any other COBOL statements in this regard.

Regards
Rune

[AkashKumar7902]

@Rune-Christensen
Thanks for the review.
I will be sending a new PR.