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2a14e084cf
These two containers are indeed collections, so their place is in libcollections, not in libstd. There will always be a hash map as part of the standard distribution of Rust, but by moving it out of the standard library it makes libstd that much more portable to more platforms and environments. This conveniently also removes the stuttering of 'std::hashmap::HashMap', although 'collections::HashMap' is only one character shorter.
103 lines
2.5 KiB
Rust
103 lines
2.5 KiB
Rust
// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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/*!
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The `ToStr` trait for converting to strings
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*/
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use option::{Some, None};
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use str::OwnedStr;
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use iter::Iterator;
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use vec::ImmutableVector;
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/// A generic trait for converting a value to a string
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pub trait ToStr {
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/// Converts the value of `self` to an owned string
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fn to_str(&self) -> ~str;
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}
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/// Trait for converting a type to a string, consuming it in the process.
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pub trait IntoStr {
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/// Consume and convert to a string.
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fn into_str(self) -> ~str;
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}
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impl ToStr for () {
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#[inline]
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fn to_str(&self) -> ~str { ~"()" }
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}
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impl<'a,A:ToStr> ToStr for &'a [A] {
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#[inline]
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fn to_str(&self) -> ~str {
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let mut acc = ~"[";
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let mut first = true;
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for elt in self.iter() {
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if first {
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first = false;
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}
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else {
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acc.push_str(", ");
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}
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acc.push_str(elt.to_str());
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}
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acc.push_char(']');
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acc
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}
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}
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impl<A:ToStr> ToStr for ~[A] {
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#[inline]
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fn to_str(&self) -> ~str {
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let mut acc = ~"[";
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let mut first = true;
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for elt in self.iter() {
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if first {
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first = false;
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}
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else {
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acc.push_str(", ");
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}
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acc.push_str(elt.to_str());
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}
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acc.push_char(']');
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acc
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_simple_types() {
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assert_eq!(1i.to_str(), ~"1");
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assert_eq!((-1i).to_str(), ~"-1");
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assert_eq!(200u.to_str(), ~"200");
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assert_eq!(2u8.to_str(), ~"2");
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assert_eq!(true.to_str(), ~"true");
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assert_eq!(false.to_str(), ~"false");
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assert_eq!(().to_str(), ~"()");
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assert_eq!((~"hi").to_str(), ~"hi");
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}
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#[test]
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fn test_vectors() {
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let x: ~[int] = ~[];
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assert_eq!(x.to_str(), ~"[]");
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assert_eq!((~[1]).to_str(), ~"[1]");
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assert_eq!((~[1, 2, 3]).to_str(), ~"[1, 2, 3]");
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assert!((~[~[], ~[1], ~[1, 1]]).to_str() ==
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~"[[], [1], [1, 1]]");
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}
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}
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