Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!uw-entropy!quick!ole!linqdev!mark
From: mark@linqdev.UUCP (mark)
Newsgroups: comp.lang.c
Subject: Re: LEX rule, anyone???
Message-ID: <364@linqdev.UUCP>
Date: 11 Dec 89 17:39:24 GMT
References: <601@vice2utc.chalmers.se> <21108@mimsy.umd.edu>
Reply-To: mark@linqdev.UUCP ()
Organization: INTERLINQ Software Corp
Lines: 34

>   /* this is a regular expression to match a c comment    */
>   /* written by cml 890922   (probably not minimal)    */
>%%
>"/*"([^*]|[*]*[^*/])*[*]+"/"    {printf("saw a c comment.\n");}
>.                {putchar(*yytext);}
>----snip----
>
>chris...
>--

As a friend the the office here pointed out, this particular
way of handling C comments tends to 'grow' the parser.

Here is his solution which I thought was a neat way to do it
and save some space:


"/*"        {
			do  {
				yytext[0] = yytext[1];
				if( !( yytext[1] = input() ) )
					yyerror( 
					"EOF in comment.  Missing \"*/\"." );
				} while( yytext[0] != '*' || yytext[1] != '/' );
			}


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* Mark R. Holbrook-WS7M  uw-beaver!                    Interlinq Software Corp *
* Issaquah,  WA   98027       sumax!ole!   /mark       10230 NE Points Dr #200 *
* HM:206-392-9672 Voice            linqdev!            Kirkland, WA 98033-???? *
* HM:206-392-9673 Data                     \ws7m!ws7m  WK:206-827-1112 Ext:152 *
* Opinions..? Yes, they are mine and mine alone!  I'll sell 'em cheap however! *
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