More detailed error messages when using yacc

thomas.bonk@web.de
23 Jul 2000 17:02:16 -0400

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More detailed error messages when using yacc thomas.bonk@web.de (2000-07-23)
Re: More detailed error messages when using yacc rkrayhawk@aol.com (2000-08-05)
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From: thomas.bonk@web.de
Newsgroups: comp.compilers
Date: 23 Jul 2000 17:02:16 -0400
Organization: Deja.com - Before you buy.
Keywords: parse, yacc, errors, question, comment

Hello,


I'm currently writting a parser for a small query language using
byacc/j.
byacc/j is a patched Berkeley 1.8 yacc parser generator that is able to
produce Java code.


Since this parser will be part of an end-user GUI I would like to
provide detailed error messages to the user in case of an parse/syntax
error. Currently I'm able to tell the user the line and column where the
error occours and the symbol that caused the error. But additionally I
would like to provide informations what the parser expected to read
instead of the wrong symbol it got.


How do I do that?


Thanks in advance.
bye, Thomas
[Getting better errors from yacc is a pain. See the comp.compilers
archives, where this topic has been discussed at length over the past
decade. -John]

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