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// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT |
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// file at the top-level directory of this distribution and at |
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// http://rust-lang.org/COPYRIGHT. |
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// |
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
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// option. This file may not be copied, modified, or distributed |
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// except according to those terms. |
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//! Operations on ASCII strings and characters. |
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#![stable(feature = "rust1", since = "1.0.0")] |
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use mem; |
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use ops::Range; |
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use iter::FusedIterator; |
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/// Extension methods for ASCII-subset only operations on string slices. |
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/// |
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/// Be aware that operations on seemingly non-ASCII characters can sometimes |
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/// have unexpected results. Consider this example: |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// assert_eq!("café".to_ascii_uppercase(), "CAFÉ"); |
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/// assert_eq!("café".to_ascii_uppercase(), "CAFé"); |
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/// ``` |
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/// |
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/// In the first example, the lowercased string is represented `"cafe\u{301}"` |
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/// (the last character is an acute accent [combining character]). Unlike the |
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/// other characters in the string, the combining character will not get mapped |
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/// to an uppercase variant, resulting in `"CAFE\u{301}"`. In the second |
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/// example, the lowercased string is represented `"caf\u{e9}"` (the last |
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/// character is a single Unicode character representing an 'e' with an acute |
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/// accent). Since the last character is defined outside the scope of ASCII, |
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/// it will not get mapped to an uppercase variant, resulting in `"CAF\u{e9}"`. |
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/// |
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/// [combining character]: https://en.wikipedia.org/wiki/Combining_character |
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#[stable(feature = "rust1", since = "1.0.0")] |
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pub trait AsciiExt { |
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/// Container type for copied ASCII characters. |
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#[stable(feature = "rust1", since = "1.0.0")] |
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type Owned; |
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/// Checks if the value is within the ASCII range. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let ascii = 'a'; |
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/// let utf8 = '❤'; |
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/// |
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/// assert!(ascii.is_ascii()); |
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/// assert!(!utf8.is_ascii()); |
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/// ``` |
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#[stable(feature = "rust1", since = "1.0.0")] |
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fn is_ascii(&self) -> bool; |
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/// Makes a copy of the string in ASCII upper case. |
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/// |
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/// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', |
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/// but non-ASCII letters are unchanged. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let ascii = 'a'; |
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/// let utf8 = '❤'; |
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/// |
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/// assert_eq!('A', ascii.to_ascii_uppercase()); |
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/// assert_eq!('❤', utf8.to_ascii_uppercase()); |
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/// ``` |
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#[stable(feature = "rust1", since = "1.0.0")] |
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fn to_ascii_uppercase(&self) -> Self::Owned; |
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/// Makes a copy of the string in ASCII lower case. |
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/// |
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/// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', |
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/// but non-ASCII letters are unchanged. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let ascii = 'A'; |
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/// let utf8 = '❤'; |
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/// |
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/// assert_eq!('a', ascii.to_ascii_lowercase()); |
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/// assert_eq!('❤', utf8.to_ascii_lowercase()); |
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/// ``` |
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#[stable(feature = "rust1", since = "1.0.0")] |
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fn to_ascii_lowercase(&self) -> Self::Owned; |
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/// Checks that two strings are an ASCII case-insensitive match. |
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/// |
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/// Same as `to_ascii_lowercase(a) == to_ascii_lowercase(b)`, |
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/// but without allocating and copying temporary strings. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let ascii1 = 'A'; |
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/// let ascii2 = 'a'; |
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/// let ascii3 = 'A'; |
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/// let ascii4 = 'z'; |
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/// |
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/// assert!(ascii1.eq_ignore_ascii_case(&ascii2)); |
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/// assert!(ascii1.eq_ignore_ascii_case(&ascii3)); |
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/// assert!(!ascii1.eq_ignore_ascii_case(&ascii4)); |
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/// ``` |
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#[stable(feature = "rust1", since = "1.0.0")] |
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fn eq_ignore_ascii_case(&self, other: &Self) -> bool; |
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/// Converts this type to its ASCII upper case equivalent in-place. |
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/// |
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/// See `to_ascii_uppercase` for more information. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let mut ascii = 'a'; |
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/// |
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/// ascii.make_ascii_uppercase(); |
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/// |
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/// assert_eq!('A', ascii); |
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/// ``` |
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#[stable(feature = "ascii", since = "1.9.0")] |
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fn make_ascii_uppercase(&mut self); |
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/// Converts this type to its ASCII lower case equivalent in-place. |
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/// |
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/// See `to_ascii_lowercase` for more information. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii::AsciiExt; |
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/// |
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/// let mut ascii = 'A'; |
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/// |
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/// ascii.make_ascii_lowercase(); |
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/// |
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/// assert_eq!('a', ascii); |
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/// ``` |
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#[stable(feature = "ascii", since = "1.9.0")] |
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fn make_ascii_lowercase(&mut self); |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl AsciiExt for str { |
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type Owned = String; |
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#[inline] |
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fn is_ascii(&self) -> bool { |
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self.bytes().all(|b| b.is_ascii()) |
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} |
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#[inline] |
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fn to_ascii_uppercase(&self) -> String { |
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let mut bytes = self.as_bytes().to_vec(); |
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bytes.make_ascii_uppercase(); |
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// make_ascii_uppercase() preserves the UTF-8 invariant. |
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unsafe { String::from_utf8_unchecked(bytes) } |
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} |
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#[inline] |
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fn to_ascii_lowercase(&self) -> String { |
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let mut bytes = self.as_bytes().to_vec(); |
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bytes.make_ascii_lowercase(); |
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// make_ascii_uppercase() preserves the UTF-8 invariant. |
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unsafe { String::from_utf8_unchecked(bytes) } |
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} |
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#[inline] |
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fn eq_ignore_ascii_case(&self, other: &str) -> bool { |
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self.as_bytes().eq_ignore_ascii_case(other.as_bytes()) |
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} |
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fn make_ascii_uppercase(&mut self) { |
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let me: &mut [u8] = unsafe { mem::transmute(self) }; |
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me.make_ascii_uppercase() |
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} |
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fn make_ascii_lowercase(&mut self) { |
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let me: &mut [u8] = unsafe { mem::transmute(self) }; |
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me.make_ascii_lowercase() |
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} |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl AsciiExt for [u8] { |
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type Owned = Vec<u8>; |
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#[inline] |
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fn is_ascii(&self) -> bool { |
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self.iter().all(|b| b.is_ascii()) |
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} |
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#[inline] |
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fn to_ascii_uppercase(&self) -> Vec<u8> { |
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let mut me = self.to_vec(); |
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me.make_ascii_uppercase(); |
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return me |
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} |
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#[inline] |
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fn to_ascii_lowercase(&self) -> Vec<u8> { |
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let mut me = self.to_vec(); |
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me.make_ascii_lowercase(); |
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return me |
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} |
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#[inline] |
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fn eq_ignore_ascii_case(&self, other: &[u8]) -> bool { |
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self.len() == other.len() && |
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self.iter().zip(other).all(|(a, b)| { |
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a.eq_ignore_ascii_case(b) |
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}) |
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} |
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fn make_ascii_uppercase(&mut self) { |
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for byte in self { |
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byte.make_ascii_uppercase(); |
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} |
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} |
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fn make_ascii_lowercase(&mut self) { |
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for byte in self { |
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byte.make_ascii_lowercase(); |
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} |
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} |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl AsciiExt for u8 { |
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type Owned = u8; |
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#[inline] |
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fn is_ascii(&self) -> bool { *self & 128 == 0 } |
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#[inline] |
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fn to_ascii_uppercase(&self) -> u8 { ASCII_UPPERCASE_MAP[*self as usize] } |
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#[inline] |
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fn to_ascii_lowercase(&self) -> u8 { ASCII_LOWERCASE_MAP[*self as usize] } |
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#[inline] |
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fn eq_ignore_ascii_case(&self, other: &u8) -> bool { |
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self.to_ascii_lowercase() == other.to_ascii_lowercase() |
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} |
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#[inline] |
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fn make_ascii_uppercase(&mut self) { *self = self.to_ascii_uppercase(); } |
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#[inline] |
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fn make_ascii_lowercase(&mut self) { *self = self.to_ascii_lowercase(); } |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl AsciiExt for char { |
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type Owned = char; |
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#[inline] |
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fn is_ascii(&self) -> bool { |
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*self as u32 <= 0x7F |
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} |
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#[inline] |
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fn to_ascii_uppercase(&self) -> char { |
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if self.is_ascii() { |
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(*self as u8).to_ascii_uppercase() as char |
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} else { |
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*self |
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} |
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} |
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#[inline] |
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fn to_ascii_lowercase(&self) -> char { |
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if self.is_ascii() { |
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(*self as u8).to_ascii_lowercase() as char |
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} else { |
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*self |
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} |
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} |
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#[inline] |
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fn eq_ignore_ascii_case(&self, other: &char) -> bool { |
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self.to_ascii_lowercase() == other.to_ascii_lowercase() |
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} |
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#[inline] |
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fn make_ascii_uppercase(&mut self) { *self = self.to_ascii_uppercase(); } |
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#[inline] |
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fn make_ascii_lowercase(&mut self) { *self = self.to_ascii_lowercase(); } |
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} |
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/// An iterator over the escaped version of a byte, constructed via |
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/// `std::ascii::escape_default`. |
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#[stable(feature = "rust1", since = "1.0.0")] |
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pub struct EscapeDefault { |
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range: Range<usize>, |
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data: [u8; 4], |
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} |
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/// Returns an iterator that produces an escaped version of a `u8`. |
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/// |
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/// The default is chosen with a bias toward producing literals that are |
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/// legal in a variety of languages, including C++11 and similar C-family |
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/// languages. The exact rules are: |
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/// |
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/// - Tab, CR and LF are escaped as '\t', '\r' and '\n' respectively. |
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/// - Single-quote, double-quote and backslash chars are backslash-escaped. |
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/// - Any other chars in the range [0x20,0x7e] are not escaped. |
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/// - Any other chars are given hex escapes of the form '\xNN'. |
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/// - Unicode escapes are never generated by this function. |
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/// |
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/// # Examples |
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/// |
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/// ``` |
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/// use std::ascii; |
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/// |
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/// let escaped = ascii::escape_default(b'0').next().unwrap(); |
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/// assert_eq!(b'0', escaped); |
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/// |
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/// let mut escaped = ascii::escape_default(b'\t'); |
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/// |
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/// assert_eq!(b'\\', escaped.next().unwrap()); |
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/// assert_eq!(b't', escaped.next().unwrap()); |
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/// ``` |
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#[stable(feature = "rust1", since = "1.0.0")] |
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pub fn escape_default(c: u8) -> EscapeDefault { |
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let (data, len) = match c { |
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b'\t' => ([b'\\', b't', 0, 0], 2), |
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b'\r' => ([b'\\', b'r', 0, 0], 2), |
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b'\n' => ([b'\\', b'n', 0, 0], 2), |
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b'\\' => ([b'\\', b'\\', 0, 0], 2), |
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b'\'' => ([b'\\', b'\'', 0, 0], 2), |
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b'"' => ([b'\\', b'"', 0, 0], 2), |
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b'\x20' ... b'\x7e' => ([c, 0, 0, 0], 1), |
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_ => ([b'\\', b'x', hexify(c >> 4), hexify(c & 0xf)], 4), |
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}; |
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return EscapeDefault { range: (0.. len), data: data }; |
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fn hexify(b: u8) -> u8 { |
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match b { |
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0 ... 9 => b'0' + b, |
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_ => b'a' + b - 10, |
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} |
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} |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl Iterator for EscapeDefault { |
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type Item = u8; |
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fn next(&mut self) -> Option<u8> { self.range.next().map(|i| self.data[i]) } |
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fn size_hint(&self) -> (usize, Option<usize>) { self.range.size_hint() } |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl DoubleEndedIterator for EscapeDefault { |
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fn next_back(&mut self) -> Option<u8> { |
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self.range.next_back().map(|i| self.data[i]) |
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} |
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} |
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#[stable(feature = "rust1", since = "1.0.0")] |
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impl ExactSizeIterator for EscapeDefault {} |
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#[unstable(feature = "fused", issue = "35602")] |
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impl FusedIterator for EscapeDefault {} |
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static ASCII_LOWERCASE_MAP: [u8; 256] = [ |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
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b' ', b'!', b'"', b'#', b'$', b'%', b'&', b'\'', |
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b'(', b')', b'*', b'+', b',', b'-', b'.', b'/', |
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b'0', b'1', b'2', b'3', b'4', b'5', b'6', b'7', |
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b'8', b'9', b':', b';', b'<', b'=', b'>', b'?', |
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b'@', |
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b'a', b'b', b'c', b'd', b'e', b'f', b'g', |
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b'h', b'i', b'j', b'k', b'l', b'm', b'n', b'o', |
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b'p', b'q', b'r', b's', b't', b'u', b'v', b'w', |
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b'x', b'y', b'z', |
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b'[', b'\\', b']', b'^', b'_', |
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b'`', b'a', b'b', b'c', b'd', b'e', b'f', b'g', |
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b'h', b'i', b'j', b'k', b'l', b'm', b'n', b'o', |
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b'p', b'q', b'r', b's', b't', b'u', b'v', b'w', |
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b'x', b'y', b'z', b'{', b'|', b'}', b'~', 0x7f, |
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
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0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
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0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, |
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0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, |
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0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
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0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
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0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, |
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]; |
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static ASCII_UPPERCASE_MAP: [u8; 256] = [ |
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
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b' ', b'!', b'"', b'#', b'$', b'%', b'&', b'\'', |
|
|
b'(', b')', b'*', b'+', b',', b'-', b'.', b'/', |
|
|
b'0', b'1', b'2', b'3', b'4', b'5', b'6', b'7', |
|
|
b'8', b'9', b':', b';', b'<', b'=', b'>', b'?', |
|
|
b'@', b'A', b'B', b'C', b'D', b'E', b'F', b'G', |
|
|
b'H', b'I', b'J', b'K', b'L', b'M', b'N', b'O', |
|
|
b'P', b'Q', b'R', b'S', b'T', b'U', b'V', b'W', |
|
|
b'X', b'Y', b'Z', b'[', b'\\', b']', b'^', b'_', |
|
|
b'`', |
|
|
|
|
|
b'A', b'B', b'C', b'D', b'E', b'F', b'G', |
|
|
b'H', b'I', b'J', b'K', b'L', b'M', b'N', b'O', |
|
|
b'P', b'Q', b'R', b'S', b'T', b'U', b'V', b'W', |
|
|
b'X', b'Y', b'Z', |
|
|
|
|
|
b'{', b'|', b'}', b'~', 0x7f, |
|
|
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
|
|
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
|
|
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, |
|
|
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
|
|
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
|
|
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
|
|
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, |
|
|
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
|
|
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, |
|
|
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
|
|
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, |
|
|
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
|
|
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, |
|
|
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
|
|
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
|
|
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, |
|
|
]; |
|
|
|
|
|
|
|
|
#[cfg(test)] |
|
|
mod tests { |
|
|
use super::*; |
|
|
use char::from_u32; |
|
|
|
|
|
#[test] |
|
|
fn test_is_ascii() { |
|
|
assert!(b"".is_ascii()); |
|
|
assert!(b"banana\0\x7F".is_ascii()); |
|
|
assert!(b"banana\0\x7F".iter().all(|b| b.is_ascii())); |
|
|
assert!(!b"Vi\xe1\xbb\x87t Nam".is_ascii()); |
|
|
assert!(!b"Vi\xe1\xbb\x87t Nam".iter().all(|b| b.is_ascii())); |
|
|
assert!(!b"\xe1\xbb\x87".iter().any(|b| b.is_ascii())); |
|
|
|
|
|
assert!("".is_ascii()); |
|
|
assert!("banana\0\u{7F}".is_ascii()); |
|
|
assert!("banana\0\u{7F}".chars().all(|c| c.is_ascii())); |
|
|
assert!(!"ประเทศไทย中华Việt Nam".chars().all(|c| c.is_ascii())); |
|
|
assert!(!"ประเทศไทย中华ệ ".chars().any(|c| c.is_ascii())); |
|
|
} |
|
|
|
|
|
#[test] |
|
|
fn test_to_ascii_uppercase() { |
|
|
assert_eq!("url()URL()uRl()ürl".to_ascii_uppercase(), "URL()URL()URL()üRL"); |
|
|
assert_eq!("hıKß".to_ascii_uppercase(), "HıKß"); |
|
|
|
|
|
for i in 0..501 { |
|
|
let upper = if 'a' as u32 <= i && i <= 'z' as u32 { i + 'A' as u32 - 'a' as u32 } |
|
|
else { i }; |
|
|
assert_eq!((from_u32(i).unwrap()).to_string().to_ascii_uppercase(), |
|
|
(from_u32(upper).unwrap()).to_string()); |
|
|
} |
|
|
} |
|
|
|
|
|
#[test] |
|
|
fn test_to_ascii_lowercase() { |
|
|
assert_eq!("url()URL()uRl()Ürl".to_ascii_lowercase(), "url()url()url()Ürl"); |
|
|
// Dotted capital I, Kelvin sign, Sharp S. |
|
|
assert_eq!("HİKß".to_ascii_lowercase(), "hİKß"); |
|
|
|
|
|
for i in 0..501 { |
|
|
let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } |
|
|
else { i }; |
|
|
assert_eq!((from_u32(i).unwrap()).to_string().to_ascii_lowercase(), |
|
|
(from_u32(lower).unwrap()).to_string()); |
|
|
} |
|
|
} |
|
|
|
|
|
#[test] |
|
|
fn test_make_ascii_lower_case() { |
|
|
macro_rules! test { |
|
|
($from: expr, $to: expr) => { |
|
|
{ |
|
|
let mut x = $from; |
|
|
x.make_ascii_lowercase(); |
|
|
assert_eq!(x, $to); |
|
|
} |
|
|
} |
|
|
} |
|
|
test!(b'A', b'a'); |
|
|
test!(b'a', b'a'); |
|
|
test!(b'!', b'!'); |
|
|
test!('A', 'a'); |
|
|
test!('À', 'À'); |
|
|
test!('a', 'a'); |
|
|
test!('!', '!'); |
|
|
test!(b"H\xc3\x89".to_vec(), b"h\xc3\x89"); |
|
|
test!("HİKß".to_string(), "hİKß"); |
|
|
} |
|
|
|
|
|
|
|
|
#[test] |
|
|
fn test_make_ascii_upper_case() { |
|
|
macro_rules! test { |
|
|
($from: expr, $to: expr) => { |
|
|
{ |
|
|
let mut x = $from; |
|
|
x.make_ascii_uppercase(); |
|
|
assert_eq!(x, $to); |
|
|
} |
|
|
} |
|
|
} |
|
|
test!(b'a', b'A'); |
|
|
test!(b'A', b'A'); |
|
|
test!(b'!', b'!'); |
|
|
test!('a', 'A'); |
|
|
test!('à', 'à'); |
|
|
test!('A', 'A'); |
|
|
test!('!', '!'); |
|
|
test!(b"h\xc3\xa9".to_vec(), b"H\xc3\xa9"); |
|
|
test!("hıKß".to_string(), "HıKß"); |
|
|
|
|
|
let mut x = "Hello".to_string(); |
|
|
x[..3].make_ascii_uppercase(); // Test IndexMut on String. |
|
|
assert_eq!(x, "HELlo") |
|
|
} |
|
|
|
|
|
#[test] |
|
|
fn test_eq_ignore_ascii_case() { |
|
|
assert!("url()URL()uRl()Ürl".eq_ignore_ascii_case("url()url()url()Ürl")); |
|
|
assert!(!"Ürl".eq_ignore_ascii_case("ürl")); |
|
|
// Dotted capital I, Kelvin sign, Sharp S. |
|
|
assert!("HİKß".eq_ignore_ascii_case("hİKß")); |
|
|
assert!(!"İ".eq_ignore_ascii_case("i")); |
|
|
assert!(!"K".eq_ignore_ascii_case("k")); |
|
|
assert!(!"ß".eq_ignore_ascii_case("s")); |
|
|
|
|
|
for i in 0..501 { |
|
|
let lower = if 'A' as u32 <= i && i <= 'Z' as u32 { i + 'a' as u32 - 'A' as u32 } |
|
|
else { i }; |
|
|
assert!((from_u32(i).unwrap()).to_string().eq_ignore_ascii_case( |
|
|
&from_u32(lower).unwrap().to_string())); |
|
|
} |
|
|
} |
|
|
|
|
|
#[test] |
|
|
fn inference_works() { |
|
|
let x = "a".to_string(); |
|
|
x.eq_ignore_ascii_case("A"); |
|
|
} |
|
|
}
|
|
|
|
