John,
You are right "parser" is a poor choice. I was just using your class name
(Ruote::Parser) and I certainly understand what ruby_dsl does.
I agree that I can have my own DSL that can live happily with process
definitions so I do not have to hide them inside participants. That's fine
too. But there seems to me that there are some major similarities... :) ...
that could be leveraged... may be later...
Pat.
On May 17, 2010, at 11:24 PM, John Mettraux wrote:
>
> On Mon, May 17, 2010 at 10:52:11PM -0400, Cappelaere Patrice wrote:
>> Since you asked:
>>
>> Ruote.process_definition :name => 'my def 2', :revision => 0 do
>> sequence do
>>
>> set :field=>'red', :value=>3
>> set :field=>'green', :value=>4
>> set :field=>'blue', :value=>band(4)
>>
>> # crashes set :field=>'blue' do
>> # band :number=> 4
>> #end
>>
>> composite_visible :r=>'${f:red}', :g=>'${f:green}', :b=>'${f:blue}'
>> end
>> end
>>
>> create a file in public to hold that definition and load it in ruote_fluo
>> first two sets do not show up
>> third set shows up as "band 4"
>> fourth commented set crashes
>
> ruote-fluo is not meant to display/edit process definition where you call
> ruby function at "define time".
>
> Sorry for the lack of warning signals about that.
>
>
>> [Note: wouldn't it be nice to be able to define the variables and then use
>> them directly?
>> like:
>>
>> red = band :number=>5
>> green = band :number=>4
>> blue = band :number=>3
>>
>> composite_visible :r=>red :g=>green, :b=>blue
>
> Sorry, but ruote is not interpreting ruby directly, it's interpreting process
> definition expressed as
>
> [ expression_name, attribute_hash, children_expression_array ]
>
> As I've said previously, "parser" is a poor choice, "generator" would be
> better.
>
> Ruote is not parsing ruby code, it is executing ruby code to generate process
> definition trees.
>
> Now, that leaves you free to come up with a generator that takes as input any
> dialect you want.
>
>
> Best regards,
>
> --
> John Mettraux - http://jmettraux.wordpress.com
>
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