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Expand COBOL copybooks and DCLGEN

 
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Mike 1304

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Joined: 15 Oct 2011
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Location: Germany

PostPosted: Sun May 26, 2013 10:54 pm    Post subject: Expand COBOL copybooks and DCLGEN
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Hi,

does somebody know a tool to expand copybooks and dclgen in the same way the Compiler does, but without the real compile?

I want to get the expanded source code to do a scan for rule compliance.

Mike
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Bill Woodger

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Joined: 09 Mar 2011
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PostPosted: Mon May 27, 2013 12:32 am    Post subject: Reply to: Cobol Copybook and DCLGEN expand
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Not sure about the DCLGEN processing, but

Programming Guide wrote:
When MDECK(NOCOMPILE) is in effect, compilation is terminated after library processing has completed and the expanded source program file has been written. The compiler does no further syntax checking or code generation regardless of the settings of the COMPILE, DECK, and OBJECT compiler options.


The next possibility would be:

Quote:
Use NOCOMPILE without any suboption to request a syntax check (only diagnostics produced, no object code). If you use NOCOMPILE without any suboption, several compiler options will have no effect because no object code will be produced, for example: DECK, LIST, OBJECT, OFFSET, OPTIMIZE, SSRANGE, and TEST.
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Anuj Dhawan

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PostPosted: Mon May 27, 2013 3:42 pm    Post subject:
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Do you've IBM File-Manager available?
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Mike 1304

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PostPosted: Mon May 27, 2013 5:32 pm    Post subject:
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yes, why?
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Garry Carroll

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Location: Dublin, Ireland / Edinburgh, Scotland

PostPosted: Mon May 27, 2013 5:54 pm    Post subject:
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Have you tried PGM=ISRLEMX ?

see http://publib.boulder.ibm.com/infocenter/zos/v1r11/index.jsp?topic=/com.ibm.zos.r11.f54pc00/ispzpc8041.htm

Garry.
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Mike 1304

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PostPosted: Mon May 27, 2013 6:09 pm    Post subject:
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Hi Garry,

thanks for your answer!

As far as I understood, ISRLEMX only supports COPY and not EXEC SQL INCLUDE.
It also supports only up to 8 concatinations of datasets (I need much more).

So I think the IGYCRCTL with PARM MDECK(NOCOMPILE),SQL is the better choice for me.

Thanks to all,
Mike
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Bill Woodger

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PostPosted: Mon May 27, 2013 6:26 pm    Post subject: Reply to: Cobol Copybook and DCLGEN expand
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If the production listings are computer-readlable, you could look at using those.

I don't think ISRLEMX will do any "REPLACING".

It's an "interesting" audit requirement. Are they unhappy about the abilities of your change-management system to produce correct source at any given point in time? After all, doing a "re-expansion" is going to rely on that anyway.
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Pandora-Box

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PostPosted: Mon May 27, 2013 6:29 pm    Post subject:
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Should the requirement be achieved without REXX ?
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Mike 1304

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PostPosted: Mon May 27, 2013 6:41 pm    Post subject:
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I have no compile listing to get this information.

The reason why I want to expand the native source with copybooks and includes is, that I want to scan the expanded source code against rules e.g.
- only one GOBACK per program
- "IF" should be ended with "END-IF"
- avoid dots to end structures
- avoid "GO TO"
- remove unused copybooks
- avoid type conversion for numeric operations
etc.
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Mike 1304

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PostPosted: Mon May 27, 2013 6:47 pm    Post subject:
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Pandora-Box wrote:
Should the requirement be achieved without REXX ?


REXX of course is an alternative, but nested COPY->INCLUDE->COPY->INCLUDE and nested COPY REPLACING could be a bit complex.
So I prefer to use an existing solution if available and performant.

I'll test with the compiler...
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Bill Woodger

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PostPosted: Mon May 27, 2013 7:37 pm    Post subject: Reply to: Cobol Copybook and DCLGEN expand
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I'd only use the compiler. It is the only guarantee that the output is the same.

I'd even now consider the full compile, having seen what you have to do, and work from the listings. They will have done much that would aid you.

- only one GOBACK per program

The VBREF will produce a count of these.

- "IF" should be ended with "END-IF"

Assuming this is "conditional-construct should be terminated with scope-delimiter", the "level" marker the compiler puts on the listing will tell where a construct ends. You can also take note of the program-indentation as a warning.

- avoid dots to end structures

Same will cover this.

- avoid "GO TO"

There will be a count. There is also a "compiler-information-byte" with a bit which tells you if used (object/load).

- remove unused copybooks

OPT(FULL) will identify all unused 01/77-level data-structures. Also the XREF, on its own, or embedded in the DMAP.

- avoid type conversion for numeric operations

Not sure what you mean by this one. If you mean "more than one conversion of the same data" this is the most complex requirement, as things may be "conditional". At the end of the day, the LIST output will show you it is happening, but how would you completely avoid it anyway?
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Mike 1304

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PostPosted: Mon May 27, 2013 7:48 pm    Post subject:
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Sorry Bill,

there is a misunderstanding, I didn't describe my intention detailed enough:

I want to use a professional scanner, i do not want to code the rule checks by myself.
But the professional scanner needs the expanded source code as input, it is not able to resolve COPY or INCLUDE statements.

And I agree with you the compiler will be the safest way.

In addition I read about differences DB2-Precompiler and DB2 Coprocessor.
INCLUDE containing a COPY..REPLACING is treated different

So I think I have to use the DB2-Preprocessor and than the compiler, because we do it in this way in our company.

I hope performance is ok.
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Bill Woodger

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PostPosted: Mon May 27, 2013 8:00 pm    Post subject: Reply to: Cobol Copybook and DCLGEN expand
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OK, got it.

I'd expect performance to beat any other way of doing it, even if the other ways were guaranteed accurate.

Of course, a scrillion programs will take some time :-)

You might want to look at the possibility of compiling more than one at once and splitting the output vs one-at-a-time. I've no idea at all which would be best, but might be worth looking :-)
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Anuj Dhawan

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PostPosted: Tue May 28, 2013 3:51 pm    Post subject:
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Mike 1304 wrote:
yes, why?
Because file Manager provides an internal version of the COBOL compiler and this can be of your use - if I understood 'your requirement'.

This compiler is installed into FMN.SFMNMOD1, if your-shop has installed File Manager into the default libraries, with load modules named FMN9xxxx. While working with File-Manger - this 'internal version of the COBOL compiler' can get preference to a supported COBOL compiler available at your shop OR can be saver when a supported COBOL compiler is not available to File Manager. But the File Manager COBOL compiler is a reduced-function compiler and cannot be used to generate executable COBOL programs; however, for your case this sounds suitable.

Keeping that in mind - please try an "online experiment" - create a copybook, having an intentional error, and use "13 Copybook View and Print" option of IBM file manager -- and follow the instructions shown on the screen - it'll show you the compile listing. You can generate a batch Job also.

Hope this helps.
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dick scherrer

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Joined: 23 Nov 2006
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PostPosted: Tue May 28, 2013 9:35 pm    Post subject:
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Hello,

Once upon a time there was a product called MetaCOBOL (originally from ADR and then CA). I believe it may now be included in the CHORUS product.

Several places i worked used this to enforce COBOL coding standards.
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haimzeevi

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Joined: 01 Mar 2010
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Location: Israel

PostPosted: Thu May 30, 2013 5:40 pm    Post subject:
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Hi Mike,
1. I understand you are located in Germany; in our workshop, in Israel, we use a German product named "CC Auditor", by "CC GmbH 2008".
This product is tailored in Endeavor, so during every compile it issues the syntax-checks you've mentioned. Of course, you can set the rules for checks.
You can isshue a check from any editor's command-line, while editting the source-code, as well.
Their website is http://www.cc-gmbh.de/en/cc-products/cc-auditor

2. Following Bill's post, you can add, easily, a DB2-preprocessor step, prior to the Cobol step, and have the DCLGENs expanded in the source.

3. If you use Expediter / Intertest / any other debugger, you can access the expanded source-code, generated in a previos compile ("Symbolic files"), copy it to your own files, and scan it.
Good luck.
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Mike 1304

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PostPosted: Fri May 31, 2013 11:21 am    Post subject: Reply to: Cobol Copybook and DCLGEN expand
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Hi haimzeevi

I also want o use CC Auditor, but not on every compile during the day!

I want to scan the code at night only one time for every during the day changed program.

Because CC Auditor offers no function to expand the code (COPY/SQL INCLUDE) I will try to do it using DB2-Precompile and Compile.

Thanks,
Mike
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dbzTHEdinosauer

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Joined: 20 Oct 2006
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Location: porcelain throne

PostPosted: Fri May 31, 2013 5:30 pm    Post subject:
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/Start PERSONAL OPINION/

one of the problems with auditing programs is the timing.
if you audit the program after compile at night,
that means the programmer can/could promote the module to production during the day.
Have fun trying to get a new promotion authorized
that will only modify the source in order to comply with 'rules' but not alter object functionality
for a production program.

Either employ the audit program in the sites compile/bind/linkedit JCL
so that if the 'code' exceeds the 'rules',
the job fails
otherwise you will get into pissing contests with managers who have deadlines.


/End PERSONAL OPINION/
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