getProgramValueFromKey

GetProgramValueFromKey.cyan

package metaobjectTest


@doc{*
  Annotation 'getProgramValueFromKey' is String expression. It is
  "" if its parameter is not a program key. If it is, the expression
  is the value associated to the key in the program but 
  transformed into a string by either method toString of Java or
  method asString of Cyan.
  
*}
object GetProgramValueFromKey

    func run {
        /*
            The project file, p.pyan, has the contents
            
            
                @setVariable(debug, "yes")
                @setVariable(author, "Jose") 
                // elided
                program
                    // elided    
                    @setVariable(test, create)
                    @setVariable(goal, "Test all metaobjects")
                    package metaobjectTest
                    // elided    

            Therefore the program variable 'debug' is associated
            to "yes" and 'author' to "Jose". 
            
        */
        var String value = @getProgramValueFromKey(debug);
        assert value == "yes";
        value = @getProgramValueFromKey(author);
        assert value == "Jose";
    }

end