Grammar definition problem.

Hi All, I am facing problem in defining the following grammar for Bison. X -> letter { letter | digit }. here letter and digit are terminals and X is the non terminal symbol. I am not able to put this rule in the bison grammar form hence need some advice on this. in particular I am not able to

RE: Grammar definition problem.

Atul wrote: > X -> letter { letter | digit }. > here letter and digit are terminals and X is the non terminal symbol. > how do I put the OR part of the rule inconsideration of the > fact that that scentence has to start with the "letter" and > later have any number of of digit? Use a nontermina

Re: %union errors that shouldn't be there

On Sun, 20 Mar 2005, DYP wrote: > In file included from misery.ll:30: > gram.yy:26: error: ISO C++ forbids declaration of `astNode' with no type > gram.yy:26: error: expected `;' before '*' token > gram.yy:27: error: ISO C++ forbids declaration of `string' with no type > gram.yy:27: error: expecte

Re: Grammar definition problem.

On Mon, 21 Mar 2005, Atul Kulkarni wrote: > how do I put the OR part of the rule inconsideration of the fact that > that scentence has to start with the "letter" and later have any > number of of digit? x: letter extension extension: /* Empty */ extension: extension letter extension: extensio

Re: Grammar definition problem.

In addition, note that most wold put this stuff in the lexer (generated say by Flex). At 14:55 +0530 2005/03/21, Atul Kulkarni wrote: Hi All, I am facing problem in defining the following grammar for Bison. X -> letter { letter | digit }. here letter and digit are terminals and X is the non term

Re: %union errors that shouldn't be there

At 11:55 +0100 2005/03/21, Laurence Finston wrote: On Sun, 20 Mar 2005, DYP wrote: In file included from misery.ll:30: gram.yy:26: error: ISO C++ forbids declaration of `astNode' with no type gram.yy:26: error: expected `;' before '*' token gram.yy:27: error: ISO C++ forbids declaration of `str

Re: %union errors that shouldn't be there

It looks as though the C++ compiler does not see the declaration of the types astNode, string (is it std::string?), nodeList, before it sees the union that the parser implements. So, you have to make sure that info is included somewhere, perhaps in the %{ ... %} segment before the %union in the

RE: %union errors that shouldn't be there

Don't forget to cc Help-Bison, so others know that your problem has been solved. At 13:26 -0500 2005/03/21, Dmitry Podkuiko wrote: Thanks for your response Hans. Indeed, it had do with #include's being in the right order. The y.tab.h file has to be the last included and I had it first in the list

RE: %union errors that shouldn't be there

Issue solved. It was the order in while y.tab.h was included in the flex file. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hans Aberg Sent: Monday, March 21, 2005 1:32 PM To: Dmitry Podkuiko Cc: help-bison@gnu.org Subject: RE: %union errors that should

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