PPSmaltalkGrammar>>number

> I am studying the PP smaltalk parser and while trying to parse a
> literal array, I stumbled on a problem:
>
> initially I could not parse simple expressions like 'a := 100'
> looking into it, I found that PPSmaltalkGrammar>>number cannot parse
> '100'
>
> since the definition is a bit complex
> ---
> number
>     ^ ($- asParser optional , #digit asParser) and , [ :context |
>         [ (NumberParser on: context stream) nextNumber ]
>             on: Error
>             do: [ :err | PPFailure message: err messageText at:
> context position ] ]
>                 asParser
> ---
>
> I was wondering if anyone could shed some light on this
>
>
> nicolas
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