NeXT lex

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3 total messages Started by Jake Blues Sat, 09 Jan 1993 23:22

#2265

Author: Jake Blues
Date: Sat, 09 Jan 1993 23:22

26 lines
923 bytes

I am having a problem with lex on NeXTSTEP 2.1.  It refuses to put the  
final '}' on my main() function when it is transformed to lex.yy.c. ie

   	%%

   	^File:.*     {};
   	^\*[^*].*    {};
   	%%

   	main()
   	{
	 	yylex();
   	}

is transformed into

	main()
	{
		yylex();

and I have to close the { by hand.  Has anyone else had this problem?
Anyone have any solutions.

I am using lex for the first time (on my own, not for class... I swear) so  
the problem could be the input, but I don't see how.

Re: NeXT lex

#2269

Author: Nick Christopher
Date: Sun, 10 Jan 1993 03:32

4 lines
550 bytes

Do you have a newline after the final } ?

\n

Re: NeXT lex

#2275

Author: Art Isbell
Date: Sun, 10 Jan 1993 22:44

23 lines
1698 bytes

In article <1993Jan9.232243.14902@pellns.alleg.edu> sunthej@alleg.edu writes:

[ description of lex problem deleted ]

Although I don't claim to be a lex expert, I seem to have stumbled across a
very irritating NeXT 2.1 and 3.0 lex bug: lex doesn't seem to grok '_' in a
range of characters making defining C variable names as tokens kinda tough.
NeXT lex treats '_' as a space character thus returning separate tokens before
and after all occurrences of '_' :-(  Replacing all '_' with other characters
(e.g., '>', '<', etc.) returns correct tokens.

Has anyone else been able to successfully search for tokens containing the '_'
character using NeXT's lex?  Maybe I'm doing something wrong.  Meanwhile, I've
downloaded the latest flex and bison to see whether their output can legally be
included in commercial apps.  I think the FSF's policy may have changed to
permit this, but I'm not sure.  Anyone else know for sure?
-- 

Art Isbell                                                      Cubic Solutions
NeXT Registered Developer #745         NeXT software development and consulting
NeXTmail: isbell@cats.UCSC.EDU                             Voice: (408)335-1154
USmail: 95018-9442                                           Fax: (408)335-2515

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