alloc_safe/
string.rs

1//! String extensions.
2
3use crate::alloc::AllocError;
4use std::borrow::Cow;
5
6/// A trait for converting a value to a `String`.
7pub trait TryToString {
8    /// Converts the given value to a `String`.
9    fn try_to_string(&self) -> Result<String, AllocError>;
10}
11
12impl TryToString for str {
13    #[inline]
14    fn try_to_string(&self) -> Result<String, AllocError> {
15        let mut s = String::new();
16        s.try_reserve_exact(self.len())?;
17        s.push_str(self);
18        Ok(s)
19    }
20}
21
22impl TryToString for Cow<'_, str> {
23    #[inline]
24    fn try_to_string(&self) -> Result<String, AllocError> {
25        self.as_ref().try_to_string()
26    }
27}
28
29impl TryToString for String {
30    #[inline]
31    fn try_to_string(&self) -> Result<String, AllocError> {
32        self.as_str().try_to_string()
33    }
34}
35
36#[cfg(test)]
37mod tests {
38    use super::*;
39
40    #[test]
41    fn test_try_to_string() {
42        assert_eq!("abc".try_to_string().unwrap(), "abc");
43    }
44}
alloc_safe/string.rs

alloc_safe/
string.rs
