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+To: "John W. Millaway" <johnmillaway@yahoo.com>
+Cc: help-flex@gnu.org
+Subject: Re: Why is YY_BUF_SIZE not override-able?
+In-reply-to: Your message of Fri, 04 May 2001 11:15:47 PDT.
+From: Vern Paxson <vern@ee.lbl.gov>
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+Date: Sat, 05 May 2001 00:24:46 PDT
+
+*** EOOH ***
+To: "John W. Millaway" <johnmillaway@yahoo.com>
+Cc: help-flex@gnu.org
+Subject: Re: Why is YY_BUF_SIZE not override-able?
+In-reply-to: Your message of Fri, 04 May 2001 11:15:47 PDT.
+From: Vern Paxson <vern@ee.lbl.gov>
+Sender: help-flex-admin@gnu.org
+Precedence: bulk
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+ the GNU lexical analyser generator <help-flex.gnu.org>
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+Date: Sat, 05 May 2001 00:24:46 PDT
+
+> Most everything can be overridden by the user. However the size of the input
+> buffer, YY_BUF_SIZE, is fixed. Is there a reason why YY_BUF_SIZE can't be
+> overridden?
+
+I don't remember offhand why I didn't make it redefinable, but note that
+you can effect smaller buffer sizes using yy_create_buffer().
+
+ Vern
+
+_______________________________________________
+Help-flex mailing list
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+From: kbinu@hss.hns.com
+To: help-flex@gnu.org
+cc: crajasri@hss.hns.com
+Message-ID: <65256A53.0034A096.00@sampark.hss.hns.com>
+Subject: Enhancements in flex for error handling
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+Date: Mon, 21 May 2001 14:55:56 +0530
+
+*** EOOH ***
+From: kbinu@hss.hns.com
+To: help-flex@gnu.org
+cc: crajasri@hss.hns.com
+Subject: Enhancements in flex for error handling
+Sender: help-flex-admin@gnu.org
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+List-Archive: <http://mail.gnu.org/pipermail/help-flex/>
+Date: Mon, 21 May 2001 14:55:56 +0530
+
+
+
+
+Hi
+ We have been using flex generated scanners for a project. In our
+application, we need to ensure that the application does not exit on system
+errors including memory allocation failures. For errors that might occur
+while the scanner allocates memory, we thought we would re-define
+YY_FATAL_ERROR to something like
+#define YY_FATAL_ERROR(x) return (error_indication=x, 0)
+where error_indication is a global that I would check after the lexer
+returns. This however is not feasible since YY_FATAL_ERROR is used in
+functions called within yylex. Some of these do not return values. Also
+yylex doesn't check if the called function encountered errors.
+Is there any plan to enhance flex to return cleanly from yylex instead of
+using exit() ? If not, any references on how to go about modifying the
+skeleton scanner for this feature ?
+
+-Binu
+
+
+
+_______________________________________________
+Help-flex mailing list
+Help-flex@gnu.org
+http://mail.gnu.org/mailman/listinfo/help-flex
+
+\1f\f
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+From: "John W. Millaway" <johnmillaway@yahoo.com>
+Subject: Re: Enhancements in flex for error handling
+To: kbinu@hss.hns.com, help-flex@gnu.org
+Cc: crajasri@hss.hns.com
+In-Reply-To: <65256A53.0034A096.00@sampark.hss.hns.com>
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+Date: Mon, 21 May 2001 09:12:32 -0700 (PDT)
+
+*** EOOH ***
+From: "John W. Millaway" <johnmillaway@yahoo.com>
+Subject: Re: Enhancements in flex for error handling
+To: kbinu@hss.hns.com, help-flex@gnu.org
+Cc: crajasri@hss.hns.com
+In-Reply-To: <65256A53.0034A096.00@sampark.hss.hns.com>
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+ <mailto:help-flex-request@gnu.org?subject=subscribe>
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+ the GNU lexical analyser generator <help-flex.gnu.org>
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+Date: Mon, 21 May 2001 09:12:32 -0700 (PDT)
+
+> using exit() ? If not, any references on how to go about modifying the
+> skeleton scanner for this feature ?
+
+You might get away with something like this (without having to modify the skeleton
+code): yyerror sets a flag, then resets the scanner, pointing the input to
+/dev/null.
+The parser will have to check the error flag, of course.
+
+-John
+
+
+
+
+__________________________________________________
+Do You Yahoo!?
+Yahoo! Auctions - buy the things you want at great prices
+http://auctions.yahoo.com/
+
+_______________________________________________
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+http://mail.gnu.org/mailman/listinfo/help-flex
+
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projects / flex / commitdiff