remove unused code

core/src/buffer.rs

@@ -292,88 +292,7 @@ impl<T: MaxEncodedLen, E, const N: usize> MaxEncodedLen for LimitedVec<T, E, N>
         N * T::max_encoded_len()
     }
 }
-/*
-/// Limited len string.
-/// `E` is overflow error type.
-/// `N` is max len which a string can have.
-#[derive(Clone, Default, Eq, Hash, Ord, PartialEq, PartialOrd, Decode, Encode, TypeInfo)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
-pub struct LimitedString<E, const N: usize>(String, PhantomData<E>);
-
-impl<E, const N: usize> LimitedString<E, N> {
-    /// Creates new empty limited string.
-    pub const fn new() -> Self {
-        Self(String::new(), PhantomData)
-    }
 
-    /// Returns length of the string.
-    pub fn len(&self) -> usize {
-        self.0.len()
-    }
-
-    /// Returns true if the string is empty.
-    pub fn is_empty(&self) -> bool {
-        self.0.is_empty()
-    }
-
-    /// Convert string to bytes.
-    ///
-    /// Asserts that limit for bytes is greater or equal to the string limit.
-    pub fn into_bytes<U: Default + Debug, const LIMIT: usize>(self) -> LimitedVec<u8, U, LIMIT> {
-        assert!(LIMIT >= N);
-        LimitedVec::try_from(self.0.into_bytes()).expect("must succeed")
-    }
-
-    pub fn into_bytes_unchecked(self) -> Vec<u8> {
-        self.0.into_bytes()
-    }
-}
-
-impl<E, const N: usize> AsRef<str> for LimitedString<E, N> {
-    fn as_ref(&self) -> &str {
-        &self.0
-    }
-}
-
-impl<E, const N: usize> AsRef<String> for LimitedString<E, N> {
-    fn as_ref(&self) -> &String {
-        &self.0
-    }
-}
-
-
-impl<E, const N: usize> MaxEncodedLen for LimitedString<E, N> {
-    fn max_encoded_len() -> usize {
-        N * size_of::<char>()
-    }
-}
-
-impl<E: Default, const N: usize> TryFrom<String> for LimitedString<E, N> {
-    type Error = E;
-    fn try_from(x: String) -> Result<Self, Self::Error> {
-        (x.len() <= N).then_some(()).ok_or_else(E::default)?;
-        Ok(Self(x, PhantomData))
-    }
-}
-
-impl<E, const N: usize> From<LimitedString<E, N>> for String {
-    fn from(x: LimitedString<E, N>) -> Self {
-        x.0
-    }
-}
-
-impl<E, const N: usize> Display for LimitedString<E, N> {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.0)
-    }
-}
-
-impl<E, const N: usize> Debug for LimitedString<E, N> {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.0)
-    }
-}
-*/
 /// Max memory size, which runtime can allocate at once.
 /// Substrate allocator restrict allocations bigger then 512 wasm pages at once.
 /// See more information about: