add missing into_char_vec and conversion for Utf32String. Fixes #37

CHANGELOG.md

@@ -4,6 +4,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- `Utf32String::into_char_vec` and missing conversion to `Vec<char>` for `Utf32String`. Fixes [#37].
+
 ### Fixed
 - `U16String::pop_char` panics with surrogate string. Fixes [#38].
 
@@ -330,6 +333,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 [#20]: https://github.com/starkat99/widestring-rs/issues/20
 [#22]: https://github.com/starkat99/widestring-rs/issues/22
 [#28]: https://github.com/starkat99/widestring-rs/issues/28
+[#37]: https://github.com/starkat99/widestring-rs/issues/37
 [#38]: https://github.com/starkat99/widestring-rs/issues/38
 
 [@nicbn]: https://github.com/nicbn

src/utfstring.rs

@@ -2523,6 +2523,19 @@ impl Utf32String {
         self.inner
             .splice(range, replace_with.as_slice().iter().copied());
     }
+
+    /// Converts string into a [`Vec`] of [`char`]s.
+    ///
+    /// This consumes the string without copying its contents.
+    #[allow(trivial_casts)]
+    #[inline]
+    #[must_use]
+    pub fn into_char_vec(self) -> Vec<char> {
+        let mut v = mem::ManuallyDrop::new(self.into_vec());
+        let (ptr, len, cap) = (v.as_mut_ptr(), v.len(), v.capacity());
+        // SAFETY: Self should be valid UTF-32 so chars will be in range
+        unsafe { Vec::from_raw_parts(ptr as *mut char, len, cap) }
+    }
 }
 
 impl AsMut<[char]> for Utf32String {
@@ -2553,6 +2566,13 @@ impl From<&[char]> for Utf32String {
     }
 }
 
+impl From<Utf32String> for Vec<char> {
+    #[inline]
+    fn from(value: Utf32String) -> Self {
+        value.into_char_vec()
+    }
+}
+
 impl PartialEq<[char]> for Utf32String {
     #[inline]
     fn eq(&self, other: &[char]) -> bool {