| // 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_name="static_methods_crate"] |
| #![crate_type = "lib"] |
| |
| pub trait read: Sized { |
| fn readMaybe(s: String) -> Option<Self>; |
| } |
| |
| impl read for isize { |
| fn readMaybe(s: String) -> Option<isize> { |
| s.parse().ok() |
| } |
| } |
| |
| impl read for bool { |
| fn readMaybe(s: String) -> Option<bool> { |
| match &*s { |
| "true" => Some(true), |
| "false" => Some(false), |
| _ => None |
| } |
| } |
| } |
| |
| pub fn read<T:read>(s: String) -> T { |
| match read::readMaybe(s) { |
| Some(x) => x, |
| _ => panic!("read panicked!") |
| } |
| } |