Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!tank!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.lang.c
Subject: Re: Something new in C syntax
Keywords: ifdefs comments
Message-ID: <15681@mimsy.UUCP>
Date: 28 Jan 89 06:27:02 GMT
References: <4586@bunker.UUCP>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 19

In article <4586@bunker.UUCP> allen@bunker.UUCP (C. Allen Grabert) writes:
>... I have since decided that the ifdef's do NOT remove the action
>of the comment delimiters.

(correct)

>...  Anyone like to comment on why it works the way it does??

Because dmr did it that way.

More realistically: the preprocessor elides comments, and also must
scan the contents of false `#if' controls to keep track of nesting.
The most obvious way to do this is to have a lexical scanner that
deletes comments, and a parser that parses `#' control lines, and
to continue to delete comments even when parsing only to find the
matching `#endif'.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris