test.n

    syntax Expression 
    {
      | StringLiteral;
      | IntegerLiteral;
      | RealLiteral;
      | BooleanLiteral;
      | FullName;
      | Parenthesis             = "(" Expression ")";
      | Generator               = GeneratorExpression;
      | Choice                  = Expression ^ 11 sm ("/" sm Expression ^ 11)+;
      | Call                    = Name ^ 150 "(" (FullName; "," sm)+ ")"; 
      | MemberAccess            = Expression ^ 150 "." Name;
      | Plus                    = "+" Expression precedence 140;
      | Minus                   = "-" Expression precedence 140;
      | Not                     = "not" sm Expression precedence 140;
      | Mul                     = Expression sm "*" sm Expression precedence 130;
      | Div                     = Expression sm "/" sm Expression precedence 130;
      | Mod                     = Expression sm "%" sm Expression precedence 130;
      | Add                     = Expression sm "+" sm Expression precedence 120;
      | Sub                     = Expression sm "-" sm Expression precedence 120;
      | LessThan                = Expression sm "<" sm Expression precedence 100;
      | GreaterThan             = Expression sm ">" sm Expression precedence 100;
      | LessThanOrEqual         = Expression sm "<=" sm Expression precedence 100;
      | GreaterThanOrEqual      = Expression sm ">=" sm Expression precedence 100;
      | Equal                   = Expression sm "==" sm Expression precedence 90;
      | NotEqual                = Expression sm "!=" sm Expression precedence 90;
      | Or                      = Expression sm "or" sm Expression precedence 40;
      | And                     = Expression sm "and" sm Expression precedence 50;
      | If                      = "if" Expression ^ 21 sm "then" sm Expression sm "else" sm Expression;
    }

    syntax GeneratorExpression
    {
      | Simple    = "[" sm Name       sm "|" sm Expression sm "]";
      | Generator = "[" sm Expression sm "|" sm (GeneratorPart; "," sm)+ "]";
    }