How to remove space around operators

[Rui Vieira]

Hi everyone,

I've created a simple grammar, just replacing the equality operator

grammar = Grammar(eq=":")

I wanted to be able to parse a string like 'valuea:"A" valueb:"B"',
however it seems I have to surround the ":" operator with spaces (ie
'valuea : "A"').

How can I parse this without the space(s)?

Thanks!

[Gustavo Narea]

Hello, Rui.

You have to surround it with spaces because the ":" is also used as the
namespace separator in your custom grammar (e.g.,
namespaceA:namespaceB:variable_name). By using spaces you resolve this
ambiguity.

What you can do is use another symbol for the namespace separator, such as a
dot. You can try the following grammar:
grammar = Grammar(eq=":", namespace_separator=".")

This way it won't be ambiguous and thus spaces wouldn't be necessary.

HTH,

- Gustavo.

> --
Gustavo Narea <xri://=Gustavo>.
| Tech blog: =Gustavo/(+blog)/tech ~ About me: =Gustavo/about |

[Rui Vieira]

Hi Gustavo,

Thanks for the explanation, it makes perfect sense.
Congratulations on booleano, it's very cool.

Rui

On Aug 6, 2009 8:15 PM, "Gustavo Narea" <m...@gustavonarea.net> wrote:

Hello, Rui.

You have to surround it with spaces because the ":" is also used as the
namespace separator in your custom grammar (e.g.,
namespaceA:namespaceB:variable_name). By using spaces you resolve this
ambiguity.

What you can do is use another symbol for the namespace separator, such as a
dot. You can try the following grammar:
   grammar = Grammar(eq=":", namespace_separator=".")

This way it won't be ambiguous and thus spaces wouldn't be necessary.

HTH,

 - Gustavo.

Rui said: > Hi everyone, > > I've created a simple grammar, just replacing the equality operator > ...

[Gustavo Narea]

Hello, Rui.

I'm glad to hear it worked and that you like Booleano!

Please let me know if you have suggestions or something, as it's still taking
shape ;-)

Cheers,