Re: language design tradeoffs

maxtal@extro.ucc.su.OZ.AU (John MAX Skaller)
Mon, 21 Sep 1992 04:03:01 GMT

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Newsgroups: comp.compilers,comp.human-factors
From: maxtal@extro.ucc.su.OZ.AU (John MAX Skaller)
Organization: MAXTAL P/L C/- University Computing Centre, Sydney
Date: Mon, 21 Sep 1992 04:03:01 GMT
References: 92-09-048 92-09-082
Keywords: design, modula

macrakis@osf.org (Stavros Macrakis) writes:
>At first, I found it strange that the end delimiter should have a
>"statement delimiter" afterwards, but in practice it looks quite
>reasonable.


I think this is the story: a MODULA II implementor decided
to make the ';' optional after 'END'. The normal syntax allowed


LABEL:PROCEDURE ... END;
LABEL:PROCEDURE ... END LABEL;


Also, in MODULA II saying the name of a parameterless procedure
invokes it, and you can have nested procedures, so the compiler
generated a call to LABEL in case 2 above instead of terminating
the procedure.


--
                JOHN (MAX) SKALLER, maxtal@extro.ucc.su.oz.au
Maxtal Pty Ltd, 6 MacKay St ASHFIELD, NSW 2131, AUSTRALIA
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