Rename to_str to to_string

Closes #15796.

[breaking-change]

1 files changed, 66 insertions, 0 deletions

diff --git a/src/libstd/to_string.rs b/src/libstd/to_string.rs
new file mode 100644
index 00000000000..c19fd81b570
--- /dev/null
+++ b/src/libstd/to_string.rs
@@ -0,0 +1,66 @@
+// Copyright 2012-2013 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.
+
+/*!
+
+The `ToString` trait for converting to strings
+
+*/
+
+#![experimental]
+
+use fmt;
+use string::String;
+
+/// A generic trait for converting a value to a string
+pub trait ToString {
+    /// Converts the value of `self` to an owned string
+    fn to_string(&self) -> String;
+}
+
+/// Trait for converting a type to a string, consuming it in the process.
+pub trait IntoStr {
+    /// Consume and convert to a string.
+    fn into_string(self) -> String;
+}
+
+impl<T: fmt::Show> ToString for T {
+    fn to_string(&self) -> String {
+        format!("{}", *self)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use prelude::*;
+    use super::*;
+
+    #[test]
+    fn test_simple_types() {
+        assert_eq!(1i.to_string(), "1".to_string());
+        assert_eq!((-1i).to_string(), "-1".to_string());
+        assert_eq!(200u.to_string(), "200".to_string());
+        assert_eq!(2u8.to_string(), "2".to_string());
+        assert_eq!(true.to_string(), "true".to_string());
+        assert_eq!(false.to_string(), "false".to_string());
+        assert_eq!(().to_string(), "()".to_string());
+        assert_eq!(("hi".to_string()).to_string(), "hi".to_string());
+    }
+
+    #[test]
+    fn test_vectors() {
+        let x: Vec<int> = vec![];
+        assert_eq!(x.to_string(), "[]".to_string());
+        assert_eq!((vec![1i]).to_string(), "[1]".to_string());
+        assert_eq!((vec![1i, 2, 3]).to_string(), "[1, 2, 3]".to_string());
+        assert!((vec![vec![], vec![1i], vec![1i, 1]]).to_string() ==
+               "[[], [1], [1, 1]]".to_string());
+    }
+}