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Status Delivered
Workspace PL/I Compilers
Created by Guest
Created on Mar 29, 2017

RELATED IDEAS

New RULES suboption MULTISEMI with parameters ALL/SOURCE

We want to ask you for implementation of a new compile Option that would require at most one semicolon on a source line.

Code lines with multiple PLI Statements (semicolons) should be prevented with this Option.

Please note:
In front of this request we've had a discussion via email with Peter Elderon, who has suggested this new RULES suboption MULTISEMI
MULTISEMI should be Default and should not Change PLI behaviour.
NOMULTISEMI(ALL/SOURCE) should prevent multiple semicolons (stmts) in one source line

We don't want to use RULES(NOLAXSTMT) because Stmts like:
51.2 1 1 end;
52.2 1 else ggcb_ptr = zggcb_ptr;
or
if intrc > isprc then isprc = intrc;

should be still possible.

Idea priority Low
  • Guest
    Reply
    |     Aug 29, 2017

    this was delivered as part of 5.2

  • Guest
    Reply
    |     Apr 6, 2017

    This could be useful, particularly as an alternate to RULES(NOLAXSTMT)

  • Guest
    Reply
    |     Mar 30, 2017

    Nice, here we go again:

    This is asking for a rue that should never have been necessary if IBM had not changed the way statements are numbered, going from the old V2.3.0 OS compiler to Enterprise PL/I. As an example, I have a program that counts 4,721 statements when compiled with the former, and 5,586 when compiled with the latter - here is a short sample from both, where you can see that WHEN now gets the same, IMO, illogical treatment:

    V.2.3.0 OS PL/I

    60 1 2 WHEN (SUBSTR(LISTREC.DATA, 1, 2) = '{Z')
    DO;
    61 1 3 IF LIST_OWN ^= SYSNULL() THEN
    DO;
    62 1 4 CALL POST_PROCESS();

    63 1 4 LIST_OWN = SYSNULL();
    64 1 4 END;

    65 1 3 CALL GET_TZ_INFO();
    66 1 3 END;

    V4.5.0 Enterprise PL/I

    2333.0 64 1 2 when (substr(listrec.data, 1, 2) = '{Z')
    2334.0 65 1 2 do;
    2339.0 66 1 3 if list_own ^= sysnull() then
    2340.0 67 1 3 do;
    2341.0 68 1 4 call post_process();
    2342.0
    2343.0 69 1 4 list_own = sysnull();
    2344.0 70 1 4 end;
    2345.0
    2346.0 71 1 3 call get_tz_info();
    2347.0 72 1 3 end;

    However, both treat statements of the type

    var_a, var_b = value;

    as a single statement, where one would expect EPLI to count this as two, as it's nothing more than a textual shortcut for

    var_a = value;
    var_b = value;

    Would you like to also flag those? RULES((NO)MULTIASSIGN) ?

    I personally would like to see a RULES() option to revert to the old OS statement numberiing scheme.

  • Guest
    Reply
    |     Mar 30, 2017

    Test - earier comment (20 minutes formulating it) disappeared on "Submit".

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