grammarMethod

GrammarMethod.cyan

package metaobjectTest


@doc{*
  Annotation 'grammarMethod' takes an attached DSL that is a regular
  expression with the regular operators (+, *, ?, |) and message 
  keywords like 'name:', 'at:', and 'with:'. This is huge metaobject.
  Read more about in the text "The Cyan Language Metaobject Protocol".
*}
object GrammarMethod

    func run {
        GrammarMethod name: "Kandinsky"
                 at: "Garden"
                 with: "Matisse"
                 
                 name: "Frida"
                 with: "Picasso"
                 with: "Mondrian"
                
                 name: "Leonardo";

    }
    
    
    @grammarMethod{*
        (name: String  (at: String)? (with: String)* )+
    *}
    func meet: Array<Tuple<String, 
         Union<some, String, none, Any>, Array<String>>> p {
         for t in p {
            Out print: "name is " ++ t f1;
            type t f2 
                case String some {
                    Out print: " place is " ++ some
                }
                case Any none {
                }
            for name in t f3 {
                Out print: " with " ++ name
            }
            "" println;
         }
    }
    

end