feature

Feature.cyan

package metaobjectTest


@doc{*
  Annotation 'feature'  associates a value to an identifier.
  It can be attached to fields, methods, method signatures, packages, and
  programs. Other metaobjects, the compiler, and Cyan code (at runtime) can 
  search the list of features. At compilation time, use method getFeatureList
  of any declaration (inside a metaobject code). At runtime, use method
  'featureList' (for the current prototype) or 'featureList: String' 
  (for methods and fields) declared in prototype Any.

*}
@feature(proto, "Feature")
object Feature

    @feature(aMethod, "run of Feature")
    func run {
        var Array<Tuple<key, String, value, Any>> list = self featureList;
        assert "\"abc\"" removeQuotes == "abc";
        
        type list[0] value
            case String value {
                assert list[0] key removeQuotes == "proto" &&
                       value removeQuotes == "Feature";
            }

        list = self featureList: "run";               
        type list[0] value
            case String value {
                assert list[0] key removeQuotes == "aMethod" &&
                       value removeQuotes == "run of Feature";
            }
               
    }

end