[antlr-interest] Newbie Needs help...

[Kevina Choolhun]

Hello,

Thanks! Could you please explain further what you mean by

"1 grammar to verify the AST (tree grammar with no output, only embedded
actions calling a callback)"

Maybe, you mean error messages?

Thank you.

Kevina

On Wed, May 21, 2008 at 5:59 PM, Nikolas Everett <nik9000 at gmail.com> wrote:

> I learned a good portion of what I know about antlr and stringtemplate by
> going through the source code for the Mantra compiler.  Its all here:
> http://www.linguamantra.org/
>
> The long and short of it is that embedding actions is great for checking
> things but is more cumbersome when actually generating output.  Tree
> grammars that output templates are the way to go there.
>
> I tend to do:
> 1 grammar to lex and parse into an AST (output=AST)
> 1 grammar to verify the AST (tree grammar with no output, only embedded
> actions calling a callback)
> 1 grammar to generate output (tree grammar with output=template)
>
> This is wonderfully flexible because the grammars become modules, allowing
> you to test them individually and substitute them at will.  This is kind of
> a pain because you need to wrote three or more grammars and sync up the
> output of the tree constructing grammar to the input of the others.
>
>
> On Wed, May 21, 2008 at 9:45 AM, csanders <csanders at hoovers.com> wrote:
>
>> I'm also new to ANTLR and would like to know how StringTemplate is a
>> better solution, is there somewhere we can read about this ?
>>
>> Thanks,
>> Charlie
>>
>> Kevina Choolhun wrote:
>>
>>> Hello,
>>>
>>> I am new at ANTLR but with the help of The Definitive ANTLR Reference
>>> have managed to set up a parser and a parser walker..
>>>
>>> Now for the next stage, I have tried my hand at embedding actions.. but
>>> Stringtemplate I hear is a much better solution.
>>>
>>> I am currently reading through stringtemplate.org <
>>> http://stringtemplate.org>. I wanted to know if there are any nice
>>> tutorials about it which could help me.. enhance my parser n lexer with
>>> StringTemplate
>>>
>>> Thank you for your help.
>>>
>>> --
>>> Kev
>>>
>>
>>
>


-- 
Kevina
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