From: Brian Candler <b.candler@...>
Date: 2009-03-24T19:21:07+09:00
Subject: Re: Writing a language converter in Ruby ?

Albert Schlef wrote:
> That's interesting. I see that their DSL looks like:
> 
>   rule additive
>     multitive '+' additive / multitive
>   end
> 
> Do you notice? There's "end" there but no "do"! How is it possible?

Because it's not Ruby.

In Ruby, blocks are optional after a method call. Both these are legal:

(1)
    foo

(2)
    foo do
      ... more stuff
    end

Presumably, TXL's language *requires* a rule body followed by end.
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