Remove inherent `ascii_ctype` methods from `str` and `[u8]`

This has been discussed in #39658. It's a bit ambiguous how those
methods work for a sequence of ascii values. We prefer users writing
`s.iter().all(|b| b.is_ascii_...())` explicitly.

The AsciiExt methods still exist and are implemented for `str`
and `[u8]`. We will deprecated or remove those later.

2 files changed, 0 insertions, 261 deletions

diff --git a/src/liballoc/slice.rs b/src/liballoc/slice.rs
index b41cb912fe7..d2573e8d442 100644
--- a/src/liballoc/slice.rs
+++ b/src/liballoc/slice.rs
@@ -1626,120 +1626,6 @@ impl [u8] {
             byte.make_ascii_lowercase();
         }
     }
-
-    /// Checks if all bytes of this slice are ASCII alphabetic characters:
-    ///
-    /// - U+0041 'A' ... U+005A 'Z', or
-    /// - U+0061 'a' ... U+007A 'z'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_alphabetic(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_alphabetic())
-    }
-
-    /// Checks if all bytes of this slice are ASCII uppercase characters:
-    /// U+0041 'A' ... U+005A 'Z'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_uppercase(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_uppercase())
-    }
-
-    /// Checks if all bytes of this slice are ASCII lowercase characters:
-    /// U+0061 'a' ... U+007A 'z'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_lowercase(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_lowercase())
-    }
-
-    /// Checks if all bytes of this slice are ASCII alphanumeric characters:
-    ///
-    /// - U+0041 'A' ... U+005A 'Z', or
-    /// - U+0061 'a' ... U+007A 'z', or
-    /// - U+0030 '0' ... U+0039 '9'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_alphanumeric(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_alphanumeric())
-    }
-
-    /// Checks if all bytes of this slice are ASCII decimal digit:
-    /// U+0030 '0' ... U+0039 '9'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_digit(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_digit())
-    }
-
-    /// Checks if all bytes of this slice are ASCII hexadecimal digits:
-    ///
-    /// - U+0030 '0' ... U+0039 '9', or
-    /// - U+0041 'A' ... U+0046 'F', or
-    /// - U+0061 'a' ... U+0066 'f'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_hexdigit(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_hexdigit())
-    }
-
-    /// Checks if all bytes of this slice are ASCII punctuation characters:
-    ///
-    /// - U+0021 ... U+002F `! " # $ % & ' ( ) * + , - . /`, or
-    /// - U+003A ... U+0040 `: ; < = > ? @`, or
-    /// - U+005B ... U+0060 `[ \\ ] ^ _ \``, or
-    /// - U+007B ... U+007E `{ | } ~`
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_punctuation(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_punctuation())
-    }
-
-    /// Checks if all bytes of this slice are ASCII graphic characters:
-    /// U+0021 '@' ... U+007E '~'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_graphic(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_graphic())
-    }
-
-    /// Checks if all bytes of this slice are ASCII whitespace characters:
-    /// U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED,
-    /// U+000C FORM FEED, or U+000D CARRIAGE RETURN.
-    ///
-    /// Rust uses the WhatWG Infra Standard's [definition of ASCII
-    /// whitespace][infra-aw]. There are several other definitions in
-    /// wide use. For instance, [the POSIX locale][pct] includes
-    /// U+000B VERTICAL TAB as well as all the above characters,
-    /// but—from the very same specification—[the default rule for
-    /// "field splitting" in the Bourne shell][bfs] considers *only*
-    /// SPACE, HORIZONTAL TAB, and LINE FEED as whitespace.
-    ///
-    /// If you are writing a program that will process an existing
-    /// file format, check what that format's definition of whitespace is
-    /// before using this function.
-    ///
-    /// [infra-aw]: https://infra.spec.whatwg.org/#ascii-whitespace
-    /// [pct]: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03_01
-    /// [bfs]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_whitespace(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_whitespace())
-    }
-
-    /// Checks if all bytes of this slice are ASCII control characters:
-    ///
-    /// - U+0000 NUL ... U+001F UNIT SEPARATOR, or
-    /// - U+007F DELETE.
-    ///
-    /// Note that most ASCII whitespace characters are control
-    /// characters, but SPACE is not.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_control(&self) -> bool {
-        self.iter().all(|b| b.is_ascii_control())
-    }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/liballoc/str.rs b/src/liballoc/str.rs
index f68ee847eb3..9173bda4248 100644
--- a/src/liballoc/str.rs
+++ b/src/liballoc/str.rs
@@ -2199,153 +2199,6 @@ impl str {
         let me = unsafe { self.as_bytes_mut() };
         me.make_ascii_lowercase()
     }
-
-    /// Checks if all characters of this string are ASCII alphabetic
-    /// characters:
-    ///
-    /// - U+0041 'A' ... U+005A 'Z', or
-    /// - U+0061 'a' ... U+007A 'z'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_alphabetic(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_alphabetic())
-    }
-
-    /// Checks if all characters of this string are ASCII uppercase characters:
-    /// U+0041 'A' ... U+005A 'Z'.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// #![feature(ascii_ctype)]
-    ///
-    /// // Only ascii uppercase characters
-    /// assert!("HELLO".is_ascii_uppercase());
-    ///
-    /// // While all characters are ascii, 'y' and 'e' are not uppercase
-    /// assert!(!"Bye".is_ascii_uppercase());
-    ///
-    /// // While all characters are uppercase, 'Ü' is not ascii
-    /// assert!(!"TSCHÜSS".is_ascii_uppercase());
-    /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_uppercase(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_uppercase())
-    }
-
-    /// Checks if all characters of this string are ASCII lowercase characters:
-    /// U+0061 'a' ... U+007A 'z'.
-    ///
-    /// # Example
-    ///
-    /// ```
-    /// #![feature(ascii_ctype)]
-    ///
-    /// // Only ascii uppercase characters
-    /// assert!("hello".is_ascii_lowercase());
-    ///
-    /// // While all characters are ascii, 'B' is not lowercase
-    /// assert!(!"Bye".is_ascii_lowercase());
-    ///
-    /// // While all characters are lowercase, 'Ü' is not ascii
-    /// assert!(!"tschüss".is_ascii_lowercase());
-    /// ```
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_lowercase(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_lowercase())
-    }
-
-    /// Checks if all characters of this string are ASCII alphanumeric
-    /// characters:
-    ///
-    /// - U+0041 'A' ... U+005A 'Z', or
-    /// - U+0061 'a' ... U+007A 'z', or
-    /// - U+0030 '0' ... U+0039 '9'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_alphanumeric(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_alphanumeric())
-    }
-
-    /// Checks if all characters of this string are ASCII decimal digit:
-    /// U+0030 '0' ... U+0039 '9'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_digit(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_digit())
-    }
-
-    /// Checks if all characters of this string are ASCII hexadecimal digits:
-    ///
-    /// - U+0030 '0' ... U+0039 '9', or
-    /// - U+0041 'A' ... U+0046 'F', or
-    /// - U+0061 'a' ... U+0066 'f'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_hexdigit(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_hexdigit())
-    }
-
-    /// Checks if all characters of this string are ASCII punctuation
-    /// characters:
-    ///
-    /// - U+0021 ... U+002F `! " # $ % & ' ( ) * + , - . /`, or
-    /// - U+003A ... U+0040 `: ; < = > ? @`, or
-    /// - U+005B ... U+0060 ``[ \ ] ^ _ ` ``, or
-    /// - U+007B ... U+007E `{ | } ~`
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_punctuation(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_punctuation())
-    }
-
-    /// Checks if all characters of this string are ASCII graphic characters:
-    /// U+0021 '@' ... U+007E '~'.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_graphic(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_graphic())
-    }
-
-    /// Checks if all characters of this string are ASCII whitespace characters:
-    /// U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED,
-    /// U+000C FORM FEED, or U+000D CARRIAGE RETURN.
-    ///
-    /// Rust uses the WhatWG Infra Standard's [definition of ASCII
-    /// whitespace][infra-aw]. There are several other definitions in
-    /// wide use. For instance, [the POSIX locale][pct] includes
-    /// U+000B VERTICAL TAB as well as all the above characters,
-    /// but—from the very same specification—[the default rule for
-    /// "field splitting" in the Bourne shell][bfs] considers *only*
-    /// SPACE, HORIZONTAL TAB, and LINE FEED as whitespace.
-    ///
-    /// If you are writing a program that will process an existing
-    /// file format, check what that format's definition of whitespace is
-    /// before using this function.
-    ///
-    /// [infra-aw]: https://infra.spec.whatwg.org/#ascii-whitespace
-    /// [pct]: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html#tag_07_03_01
-    /// [bfs]: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_05
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_whitespace(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_whitespace())
-    }
-
-    /// Checks if all characters of this string are ASCII control characters:
-    ///
-    /// - U+0000 NUL ... U+001F UNIT SEPARATOR, or
-    /// - U+007F DELETE.
-    ///
-    /// Note that most ASCII whitespace characters are control
-    /// characters, but SPACE is not.
-    #[unstable(feature = "ascii_ctype", issue = "39658")]
-    #[inline]
-    pub fn is_ascii_control(&self) -> bool {
-        self.bytes().all(|b| b.is_ascii_control())
-    }
 }
 
 /// Converts a boxed slice of bytes to a boxed string slice without checking