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use alloc::string::String;
#[cfg(__unicase__iter_cmp)]
use core::cmp::Ordering;
use core::fmt;
use core::hash::{Hash, Hasher};
use core::ops::{Deref, DerefMut};
use core::str::FromStr;
#[cfg(not(__unicase__core_and_alloc))]
#[allow(deprecated, unused)]
use std::ascii::AsciiExt;
use super::{Ascii, Encoding, UniCase};
impl<S> Ascii<S> {
#[inline]
#[cfg(__unicase__const_fns)]
pub const fn new(s: S) -> Ascii<S> {
Ascii(s)
}
/// Construct a new `Ascii`.
///
/// For Rust versions >= 1.31, this is a `const fn`.
#[inline]
#[cfg(not(__unicase__const_fns))]
pub fn new(s: S) -> Ascii<S> {
Ascii(s)
}
#[cfg(__unicase_const_fns)]
pub const fn into_unicase(self) -> UniCase<S> {
UniCase(Encoding::Ascii(self))
}
#[cfg(not(__unicase_const_fns))]
pub fn into_unicase(self) -> UniCase<S> {
UniCase(Encoding::Ascii(self))
}
#[inline]
pub fn into_inner(self) -> S {
self.0
}
}
impl<S> Deref for Ascii<S> {
type Target = S;
#[inline]
fn deref<'a>(&'a self) -> &'a S {
&self.0
}
}
impl<S> DerefMut for Ascii<S> {
#[inline]
fn deref_mut<'a>(&'a mut self) -> &'a mut S {
&mut self.0
}
}
#[cfg(__unicase__iter_cmp)]
impl<T: AsRef<str>> PartialOrd for Ascii<T> {
#[inline]
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
#[cfg(__unicase__iter_cmp)]
impl<T: AsRef<str>> Ord for Ascii<T> {
#[inline]
fn cmp(&self, other: &Self) -> Ordering {
let self_chars = self.as_ref().chars().map(|c| c.to_ascii_lowercase());
let other_chars = other.as_ref().chars().map(|c| c.to_ascii_lowercase());
self_chars.cmp(other_chars)
}
}
impl<S: AsRef<str>> AsRef<str> for Ascii<S> {
#[inline]
fn as_ref(&self) -> &str {
self.0.as_ref()
}
}
impl<S: fmt::Display> fmt::Display for Ascii<S> {
#[inline]
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(&self.0, fmt)
}
}
impl<S1: AsRef<str>> PartialEq<Ascii<S1>> for String {
#[inline]
fn eq(&self, other: &Ascii<S1>) -> bool {
other == self
}
}
impl<'a, S1: AsRef<str>> PartialEq<Ascii<S1>> for &'a str {
#[inline]
fn eq(&self, other: &Ascii<S1>) -> bool {
other == self
}
}
impl<S1: AsRef<str>, S2: AsRef<str>> PartialEq<S2> for Ascii<S1> {
#[inline]
fn eq(&self, other: &S2) -> bool {
self.as_ref().eq_ignore_ascii_case(other.as_ref())
}
}
impl<S: AsRef<str>> Eq for Ascii<S> {}
impl<S: FromStr> FromStr for Ascii<S> {
type Err = <S as FromStr>::Err;
fn from_str(s: &str) -> Result<Ascii<S>, <S as FromStr>::Err> {
s.parse().map(Ascii)
}
}
impl<S: AsRef<str>> Hash for Ascii<S> {
#[inline]
fn hash<H: Hasher>(&self, hasher: &mut H) {
for byte in self.as_ref().bytes().map(|b| b.to_ascii_lowercase()) {
hasher.write_u8(byte);
}
}
}
#[cfg(test)]
mod tests {
use ::Ascii;
use std::hash::{Hash, Hasher};
#[cfg(not(__unicase__default_hasher))]
use std::hash::SipHasher as DefaultHasher;
#[cfg(__unicase__default_hasher)]
use std::collections::hash_map::DefaultHasher;
fn hash<T: Hash>(t: &T) -> u64 {
let mut s = DefaultHasher::new();
t.hash(&mut s);
s.finish()
}
#[test]
fn test_case_insensitive() {
let a = Ascii("foobar");
let b = Ascii("FOOBAR");
assert_eq!(a, b);
assert_eq!(hash(&a), hash(&b));
assert_eq!(a, "fooBar");
assert_eq!("fooBar", a);
assert_eq!(String::from("fooBar"), a);
assert_eq!(a, String::from("fooBar"));
}
#[cfg(feature = "nightly")]
#[bench]
fn bench_ascii_eq(b: &mut ::test::Bencher) {
b.bytes = b"foobar".len() as u64;
b.iter(|| assert_eq!(Ascii("foobar"), Ascii("FOOBAR")));
}
#[cfg(__unicase__iter_cmp)]
#[test]
fn test_case_cmp() {
assert!(Ascii("foobar") == Ascii("FOOBAR"));
assert!(Ascii("a") < Ascii("B"));
assert!(Ascii("A") < Ascii("b"));
assert!(Ascii("aa") > Ascii("a"));
assert!(Ascii("a") < Ascii("aa"));
assert!(Ascii("a") < Ascii("AA"));
}
#[cfg(__unicase__const_fns)]
#[test]
fn test_ascii_new_const() {
const _ASCII: Ascii<&'static str> = Ascii::new("");
}
}