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use std::fmt::Debug;
use super::private;
pub trait Encoded {
fn __get(&self) -> &[u8];
}
#[derive(Clone, Debug)]
pub struct EncodedChar {
buffer: [u8; 4],
length: usize,
}
impl Encoded for EncodedChar {
fn __get(&self) -> &[u8] {
&self.buffer[..self.length]
}
}
impl Encoded for &str {
fn __get(&self) -> &[u8] {
self.as_bytes()
}
}
/// Allows a type to be used for searching by [`RawOsStr`] and [`RawOsString`].
///
/// This trait is very similar to [`str::pattern::Pattern`], but its methods
/// are private and it is implemented for different types.
///
/// [`RawOsStr`]: super::RawOsStr
/// [`RawOsString`]: super::RawOsString
/// [`str::pattern::Pattern`]: ::std::str::pattern::Pattern
#[cfg_attr(os_str_bytes_docs_rs, doc(cfg(feature = "raw_os_str")))]
pub trait Pattern: private::Sealed {
#[doc(hidden)]
type __Encoded: Clone + Debug + Encoded;
#[doc(hidden)]
fn __encode(self) -> Self::__Encoded;
}
impl Pattern for char {
type __Encoded = EncodedChar;
fn __encode(self) -> Self::__Encoded {
let mut encoded = EncodedChar {
buffer: [0; 4],
length: 0,
};
encoded.length = self.encode_utf8(&mut encoded.buffer).len();
encoded
}
}
impl Pattern for &str {
type __Encoded = Self;
fn __encode(self) -> Self::__Encoded {
self
}
}
impl<'a> Pattern for &'a String {
type __Encoded = <&'a str as Pattern>::__Encoded;
fn __encode(self) -> Self::__Encoded {
(**self).__encode()
}
}
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