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SmaCC ?

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Keith Hodges-2

SmaCC ?

Can anyone help me to work out why this is not working.

Scanner:

<anyLetter> : [A-Z a-z _ 0-9] ;
<upperLetter>: [A-Z] ;
<lowerLetter> : [a-z_0-9] ;

Parser:

Test : <upperLetter>+ <lowerLetter>+ <upperLetter> <anyLetter> ;

Test String:
HelloWorld

I was expecting the parser to at least get past the 'o' in world.

many thanks in advance

Keith

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Diego Fernández

Re: SmaCC ?

Remove the token <anyLetter>, I think that it confuses the parser, ie: HelloW --> o is a <anyLetter> or <lowerLetter>?.
SmaCC is not smart enough to see the difference. You can change it to:

Scanner:
<upperLetter>: [A-Z] ;
<lowerLetter> : [a-z_0-9] ;

Parser:
Test : <upperLetter>+ <lowerLetter>+ <upperLetter> AnyLetter+ ;

AnyLetter: <upperLetter>
| <lowerLetter> ;

On 6/2/06, Keith Hodges <[hidden email]> wrote:

Can anyone help me to work out why this is not working.

Scanner:

<anyLetter> : [A-Z a-z _ 0-9] ;
<upperLetter>: [A-Z] ;
<lowerLetter> : [a-z_0-9] ;

Parser:

Test : <upperLetter>+ <lowerLetter>+ <upperLetter> <anyLetter> ;

Test String:
HelloWorld

I was expecting the parser to at least get past the 'o' in world.

many thanks in advance

Keith

Send instant messages to your online friends http://uk.messenger.yahoo.com

Alain Plantec

Re: SmaCC ?

In reply to this post by Keith Hodges-2

hi,

maybe

Scanner
<upperLetter>: [A-Z] ;
<lowerLetter> : [a-z_0-9] ;
<whitespace> : \s+ ; <-- eat whitespaces

Test
AAbAA aAaaffffaa AjfdH

alain

Keith Hodges a écrit :

> Can anyone help me to work out why this is not working.
>
> Scanner:
>
> <anyLetter> : [A-Z a-z _ 0-9] ;
> <upperLetter>: [A-Z] ;
> <lowerLetter> : [a-z_0-9] ;
>
> Parser:
>
> Test : <upperLetter>+ <lowerLetter>+ <upperLetter> <anyLetter> ;
>
> Test String:
> HelloWorld
>
> I was expecting the parser to at least get past the 'o' in world.
>
> many thanks in advance
>
> Keith
>
> Send instant messages to your online friends
> http://uk.messenger.yahoo.com
>
>