gistfile1.rs

pub enum Token {
  Name(~str),
  Number(float),
  String(~str),
  LeftParen,
  RightParen,
  LeftBrace,
  RightBrace
}

impl ToStr for Token {
  fn to_str(&self) -> ~str {
    match *self {
      Name(n) => n,
      Number(n) => n.to_str(),
      String(s) => s,
      LeftParen => ~"(",
      RightParen => ~")",
      LeftBrace => ~"{",
      RightBrace => ~"}"
    }
  }
}