| // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![crate_id="static_methods_crate#0.1"] |
| #![crate_type = "lib"] |
| |
| use std::int; |
| |
| pub trait read { |
| fn readMaybe(s: String) -> Option<Self>; |
| } |
| |
| impl read for int { |
| fn readMaybe(s: String) -> Option<int> { |
| from_str::<int>(s.as_slice()) |
| } |
| } |
| |
| impl read for bool { |
| fn readMaybe(s: String) -> Option<bool> { |
| match s.as_slice() { |
| "true" => Some(true), |
| "false" => Some(false), |
| _ => None |
| } |
| } |
| } |
| |
| pub fn read<T:read>(s: String) -> T { |
| match read::readMaybe(s) { |
| Some(x) => x, |
| _ => fail!("read failed!") |
| } |
| } |