*/
-use option::{Some, None};
-use str::OwnedStr;
-use iter::Iterator;
-use vec::ImmutableVector;
+use fmt;
/// A generic trait for converting a value to a string
pub trait ToStr {
fn into_str(self) -> ~str;
}
-impl ToStr for () {
- #[inline]
- fn to_str(&self) -> ~str { ~"()" }
-}
-
-impl<'a,A:ToStr> ToStr for &'a [A] {
- #[inline]
- fn to_str(&self) -> ~str {
- let mut acc = ~"[";
- let mut first = true;
- for elt in self.iter() {
- if first {
- first = false;
- }
- else {
- acc.push_str(", ");
- }
- acc.push_str(elt.to_str());
- }
- acc.push_char(']');
- acc
- }
-}
-
-impl<A:ToStr> ToStr for ~[A] {
- #[inline]
- fn to_str(&self) -> ~str {
- let mut acc = ~"[";
- let mut first = true;
- for elt in self.iter() {
- if first {
- first = false;
- }
- else {
- acc.push_str(", ");
- }
- acc.push_str(elt.to_str());
- }
- acc.push_char(']');
- acc
- }
+impl<T: fmt::Show> ToStr for T {
+ fn to_str(&self) -> ~str { format!("{}", *self) }
}
#[cfg(test)]
mod tests {
use super::*;
+ use str::StrSlice;
#[test]
fn test_simple_types() {
- assert_eq!(1i.to_str(), ~"1");
- assert_eq!((-1i).to_str(), ~"-1");
- assert_eq!(200u.to_str(), ~"200");
- assert_eq!(2u8.to_str(), ~"2");
- assert_eq!(true.to_str(), ~"true");
- assert_eq!(false.to_str(), ~"false");
- assert_eq!(().to_str(), ~"()");
- assert_eq!((~"hi").to_str(), ~"hi");
+ assert_eq!(1i.to_str(), "1".to_owned());
+ assert_eq!((-1i).to_str(), "-1".to_owned());
+ assert_eq!(200u.to_str(), "200".to_owned());
+ assert_eq!(2u8.to_str(), "2".to_owned());
+ assert_eq!(true.to_str(), "true".to_owned());
+ assert_eq!(false.to_str(), "false".to_owned());
+ assert_eq!(().to_str(), "()".to_owned());
+ assert_eq!(("hi".to_owned()).to_str(), "hi".to_owned());
}
#[test]
fn test_vectors() {
let x: ~[int] = ~[];
- assert_eq!(x.to_str(), ~"[]");
- assert_eq!((~[1]).to_str(), ~"[1]");
- assert_eq!((~[1, 2, 3]).to_str(), ~"[1, 2, 3]");
+ assert_eq!(x.to_str(), "[]".to_owned());
+ assert_eq!((~[1]).to_str(), "[1]".to_owned());
+ assert_eq!((~[1, 2, 3]).to_str(), "[1, 2, 3]".to_owned());
assert!((~[~[], ~[1], ~[1, 1]]).to_str() ==
- ~"[[], [1], [1, 1]]");
+ "[[], [1], [1, 1]]".to_owned());
}
}