[antlr-interest] Error: TokenStreamException while reading Grammer

[Chal Chale apne Ghar]

HI Johannes,
Thanks for your reply.

As you said the given grammer syntax is fro Antlr 2.7.7.
Is there any previous version of AnltrWorks compatible with this grammer?

regards,
Gunjan



On Wed, Feb 4, 2009 at 12:20 PM, Johannes Luber <jaluber at gmx.de> wrote:

> Chal Chale apne Ghar schrieb:
> >
> >
> > Hi Gavin,
> > Thanks for quick Response.
> > It was really helpful to me.
> > After trying with the antlr v3 , I am getting different error in console.
>
> You are using the syntax for ANTLR 2.7.7 which is mostly incompatible
> with the one used by ANTLR 3. The general form of a grammar is:
>
> /** This is a grammar doc comment */
> grammar-type grammar name;
> options { name1 = value; name2 = value2; ... }
> import delegateName1=grammar1, ..., delegateNameN=grammarN; // can omit
> delegateName
> tokens { token-name1; token-name2 = value; ... }
> scope global-scope-name-1 { «attribute-definitions» }
> scope global-scope-name-2 { «attribute-definitions» }
> ...
> @header {...}
> @lexer::header {...}
> @members {...}
>
> «rules»
>
> To set the superclass of the generated class, use the superClass option.
>
> See
> <http://www.antlr.org/wiki/display/ANTLR3/ANTLR+v3+printable+documentation
> >
> for further information. Although I'm really wondering how ANTLRworks
> didn't complain about the fact, that you are actually using a ANTLR 2
> grammar. I suggest that you either convert the grammar to the new syntax
> or just use ANTLR 2.7.7.
>
> Johannes
> >
> > D:\Actuate\Samplelexer-parser\ConversionTool>java org.antlr.Tool
> > D:\Actuate\VB\v
> > b_org.g
> > ANTLR Parser Generator  Version 3.1.1
> > error(100): D:\Actuate\VB\vb_org.g:1:1: syntax error: antlr:
> > D:\Actuate\VB\vb_or
> > g.g:1:1: unexpected token: class
> > warning(149): D:\Actuate\VB\vb_org.g:0:0: rewrite syntax or operator
> > with no out
> > put option; setting output=AST
> > error(150):  grammar file D:\Actuate\VB\vb_org.g has no rules
> > error(100): D:\Actuate\VB\vb_org.g:0:0: syntax error: assign.types:
> > <AST>:0:0: u
> > nexpected end of subtree
> > error(100): D:\Actuate\VB\vb_org.g:0:0: syntax error: define: <AST>:0:0:
> > unexpec
> > ted end of subtree
> > i am attching my .g file fro reference.
> > Any help would be appriciated.
> > regards,
> > Gunjan
> > On Tue, Feb 3, 2009 at 1:23 AM, Gavin Lambert <antlr at mirality.co.nz
> > <mailto:antlr at mirality.co.nz>> wrote:
> >
> >     At 21:45 2/02/2009, Chal Chale apne Ghar wrote:
> >
> >         D:\Actuate\Samplelexer-parser\ConversionTool>java antlr.Tool
> >         vb_org.txt
> >         ANTLR Parser Generator   Version 2.7.5 (20050128)   1989-2005
> >         jGuru.com
> >         error: Token stream error reading grammar(s):
> >         vb_org.txt:45:7: expecting ''', found 'p'
> >         TokenStreamException: expecting ''', found 'p'
> >
> >         as seen, i am getting TokenStream Exception. But when i am using
> >         AntlrWorks to check the Grammer syntax, it is showing correct to
> me.
> >
> >
> >     You're running ANTLR v2 on the command line, but ANTLRWorks is for
> >     ANTLR v3.  To run ANTLR v3, you need to use "org.antlr.Tool", not
> >     "antlr.Tool".
> >
> >     Also, by convention grammar files have a .g extension.  This doesn't
> >     really matter (ANTLR will still happily compile the file regardless
> >     of extension), but it's a good idea to follow the convention, since
> >     that's what tools are expecting.
> >
> >
> >
> >
> > ------------------------------------------------------------------------
> >
> >
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