Re: flex help

[Fred 24]

(Please reply to my email address)

It works but when no space occurs it throws an error. Let me show you what 
I'm talking about. Suppose I write the statement in an editor like this:

SELECT'space''\n'
*

it works !!!


SELECT'\n'
*

doesn't works !!!

Any suggestion to make it works ???
Thanks in advance :)


> From: John Millaway <address@hidden>
> To: Fred 24 <address@hidden>
> CC: address@hidden
> Subject: Re: flex help
> Date: Mon, 15 Jul 2002 12:22:42 -0700 (PDT)
>
> > I have trouble with the \n. When a \n occurs between rules, bison return 
> an
> > error. What can I do for the \n to be valid between rules ???
> >
> > SELECT STAR WhereClause OrderClause
> >
> > "*"              return STAR;
> > "SELECT" return SELECT;
> >
> > WhereClause: {
> >               $$ = NULL;
> >              }
> >              ...
> > OrderClause:
> >              {
> >                $$ = NULL;
> >              }
> >              ...
> > Eg.:
> > SELECT *
> > WHERE ID = 5
> >
>
> You have to skip whitespace in your scanner.
>
> %%
> "*"           return STAR;
> "SELECT"      return SELECT
> [[:space:]]+   /* eat whitespace */
> %%
>
> -John
>
>
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