sgx_trts/src/ascii.rs - incubator-teaclave-sgx-sdk - Git at Google

 // Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 //  * Redistributions of source code must retain the above copyright
 //    notice, this list of conditions and the following disclaimer.
 //  * Redistributions in binary form must reproduce the above copyright
 //    notice, this list of conditions and the following disclaimer in
 //    the documentation and/or other materials provided with the
 //    distribution.
 //  * Neither the name of Baidu, Inc., nor the names of its
 //    contributors may be used to endorse or promote products derived
 //    from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 //! Operations on ASCII strings and characters.
 //!
 //! Most string operations in Rust act on UTF-8 strings. However, at times it
 //! makes more sense to only consider the ASCII character set for a specific
 //! operation.
 //!
 //! The [`AsciiExt`] trait provides methods that allow for character
 //! operations that only act on the ASCII subset and leave non-ASCII characters
 //! alone.
 //!
 //! The [`escape_default`] function provides an iterator over the bytes of an
 //! escaped version of the character given.
 //!
 //! [`AsciiExt`]: trait.AsciiExt.html
 //! [`escape_default`]: fn.escape_default.html

 use alloc::vec::Vec;
 use alloc::string::String;

 pub use core::ascii::{EscapeDefault, escape_default};

 /// Extension methods for ASCII-subset only operations.
 ///
 /// Be aware that operations on seemingly non-ASCII characters can sometimes
 /// have unexpected results.
 ///
 pub trait AsciiExt {
     /// Container type for copied ASCII characters.
     type Owned;

     /// Checks if the value is within the ASCII range.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii(&self) -> bool;

     /// Makes a copy of the value in its ASCII upper case equivalent.
     ///
     /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
     /// but non-ASCII letters are unchanged.
     ///
     /// To uppercase the value in-place, use [`make_ascii_uppercase`].
     ///
     /// To uppercase ASCII characters in addition to non-ASCII characters, use
     /// [`str::to_uppercase`].
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     ///
     #[allow(deprecated)]
     fn to_ascii_uppercase(&self) -> Self::Owned;

     /// Makes a copy of the value in its ASCII lower case equivalent.
     ///
     /// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
     /// but non-ASCII letters are unchanged.
     ///
     /// To lowercase the value in-place, use [`make_ascii_lowercase`].
     ///
     /// To lowercase ASCII characters in addition to non-ASCII characters, use
     /// [`str::to_lowercase`].
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     ///
     #[allow(deprecated)]
     fn to_ascii_lowercase(&self) -> Self::Owned;

     /// Checks that two values are an ASCII case-insensitive match.
     ///
     /// Same as `to_ascii_lowercase(a) == to_ascii_lowercase(b)`,
     /// but without allocating and copying temporaries.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn eq_ignore_ascii_case(&self, other: &Self) -> bool;

     /// Converts this type to its ASCII upper case equivalent in-place.
     ///
     /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
     /// but non-ASCII letters are unchanged.
     ///
     /// To return a new uppercased value without modifying the existing one, use
     /// [`to_ascii_uppercase`].
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     ///
     fn make_ascii_uppercase(&mut self);

     /// Converts this type to its ASCII lower case equivalent in-place.
     ///
     /// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
     /// but non-ASCII letters are unchanged.
     ///
     /// To return a new lowercased value without modifying the existing one, use
     /// [`to_ascii_lowercase`].
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     ///
     fn make_ascii_lowercase(&mut self);

     /// Checks if the value is an ASCII alphabetic character:
     /// U+0041 'A' ... U+005A 'Z' or U+0061 'a' ... U+007A 'z'.
     /// For strings, true if all characters in the string are
     /// ASCII alphabetic.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_alphabetic(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII uppercase character:
     /// U+0041 'A' ... U+005A 'Z'.
     /// For strings, true if all characters in the string are
     /// ASCII uppercase.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_uppercase(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII lowercase character:
     /// U+0061 'a' ... U+007A 'z'.
     /// For strings, true if all characters in the string are
     /// ASCII lowercase.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_lowercase(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII alphanumeric character:
     /// U+0041 'A' ... U+005A 'Z', U+0061 'a' ... U+007A 'z', or
     /// U+0030 '0' ... U+0039 '9'.
     /// For strings, true if all characters in the string are
     /// ASCII alphanumeric.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_alphanumeric(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII decimal digit:
     /// U+0030 '0' ... U+0039 '9'.
     /// For strings, true if all characters in the string are
     /// ASCII digits.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_digit(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII hexadecimal digit:
     /// U+0030 '0' ... U+0039 '9', U+0041 'A' ... U+0046 'F', or
     /// U+0061 'a' ... U+0066 'f'.
     /// For strings, true if all characters in the string are
     /// ASCII hex digits.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_hexdigit(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII punctuation character:
     ///
     /// U+0021 ... U+002F `! " # $ % & ' ( ) * + , - . /`
     /// U+003A ... U+0040 `: ; < = > ? @`
     /// U+005B ... U+0060 ``[ \\ ] ^ _ ` ``
     /// U+007B ... U+007E `{ | } ~`
     ///
     /// For strings, true if all characters in the string are
     /// ASCII punctuation.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_punctuation(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII graphic character:
     /// U+0021 '!' ... U+007E '~'.
     /// For strings, true if all characters in the string are
     /// ASCII graphic characters.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_graphic(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII whitespace character:
     /// U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED,
     /// U+000C FORM FEED, or U+000D CARRIAGE RETURN.
     /// For strings, true if all characters in the string are
     /// ASCII whitespace.
     ///
     /// 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
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_whitespace(&self) -> bool { unimplemented!(); }

     /// Checks if the value is an ASCII control character:
     /// U+0000 NUL ... U+001F UNIT SEPARATOR, or U+007F DELETE.
     /// Note that most ASCII whitespace characters are control
     /// characters, but SPACE is not.
     ///
     /// # Note
     ///
     /// This method will be deprecated in favor of the identically-named
     /// inherent methods on `u8`, `char`, `[u8]` and `str`.
     fn is_ascii_control(&self) -> bool { unimplemented!(); }
 }

 macro_rules! delegating_ascii_methods {
     () => {
         #[inline]
         fn is_ascii(&self) -> bool { self.is_ascii() }

         #[inline]
         fn to_ascii_uppercase(&self) -> Self::Owned { self.to_ascii_uppercase() }

         #[inline]
         fn to_ascii_lowercase(&self) -> Self::Owned { self.to_ascii_lowercase() }

         #[inline]
         fn eq_ignore_ascii_case(&self, o: &Self) -> bool { self.eq_ignore_ascii_case(o) }

         #[inline]
         fn make_ascii_uppercase(&mut self) { self.make_ascii_uppercase(); }

         #[inline]
         fn make_ascii_lowercase(&mut self) { self.make_ascii_lowercase(); }
     }
 }

 macro_rules! delegating_ascii_ctype_methods {
     () => {
         #[inline]
         fn is_ascii_alphabetic(&self) -> bool { self.is_ascii_alphabetic() }

         #[inline]
         fn is_ascii_uppercase(&self) -> bool { self.is_ascii_uppercase() }

         #[inline]
         fn is_ascii_lowercase(&self) -> bool { self.is_ascii_lowercase() }

         #[inline]
         fn is_ascii_alphanumeric(&self) -> bool { self.is_ascii_alphanumeric() }

         #[inline]
         fn is_ascii_digit(&self) -> bool { self.is_ascii_digit() }

         #[inline]
         fn is_ascii_hexdigit(&self) -> bool { self.is_ascii_hexdigit() }

         #[inline]
         fn is_ascii_punctuation(&self) -> bool { self.is_ascii_punctuation() }

         #[inline]
         fn is_ascii_graphic(&self) -> bool { self.is_ascii_graphic() }

         #[inline]
         fn is_ascii_whitespace(&self) -> bool { self.is_ascii_whitespace() }

         #[inline]
         fn is_ascii_control(&self) -> bool { self.is_ascii_control() }
     }
 }

 #[allow(deprecated)]
 impl AsciiExt for u8 {
     type Owned = u8;

     delegating_ascii_methods!();
     delegating_ascii_ctype_methods!();
 }

 #[allow(deprecated)]
 impl AsciiExt for char {
     type Owned = char;

     delegating_ascii_methods!();
     delegating_ascii_ctype_methods!();
 }

 #[allow(deprecated)]
 impl AsciiExt for [u8] {
     type Owned = Vec<u8>;

     delegating_ascii_methods!();

     #[inline]
     fn is_ascii_alphabetic(&self) -> bool {
         self.iter().all(|b| b.is_ascii_alphabetic())
     }

     #[inline]
     fn is_ascii_uppercase(&self) -> bool {
         self.iter().all(|b| b.is_ascii_uppercase())
     }

     #[inline]
     fn is_ascii_lowercase(&self) -> bool {
         self.iter().all(|b| b.is_ascii_lowercase())
     }

     #[inline]
     fn is_ascii_alphanumeric(&self) -> bool {
         self.iter().all(|b| b.is_ascii_alphanumeric())
     }

     #[inline]
     fn is_ascii_digit(&self) -> bool {
         self.iter().all(|b| b.is_ascii_digit())
     }

     #[inline]
     fn is_ascii_hexdigit(&self) -> bool {
         self.iter().all(|b| b.is_ascii_hexdigit())
     }

     #[inline]
     fn is_ascii_punctuation(&self) -> bool {
         self.iter().all(|b| b.is_ascii_punctuation())
     }

     #[inline]
     fn is_ascii_graphic(&self) -> bool {
         self.iter().all(|b| b.is_ascii_graphic())
     }

     #[inline]
     fn is_ascii_whitespace(&self) -> bool {
         self.iter().all(|b| b.is_ascii_whitespace())
     }

     #[inline]
     fn is_ascii_control(&self) -> bool {
         self.iter().all(|b| b.is_ascii_control())
     }
 }

 #[allow(deprecated)]
 impl AsciiExt for str {
     type Owned = String;

     delegating_ascii_methods!();

     #[inline]
     fn is_ascii_alphabetic(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_alphabetic())
     }

     #[inline]
     fn is_ascii_uppercase(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_uppercase())
     }

     #[inline]
     fn is_ascii_lowercase(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_lowercase())
     }

     #[inline]
     fn is_ascii_alphanumeric(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_alphanumeric())
     }

     #[inline]
     fn is_ascii_digit(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_digit())
     }

     #[inline]
     fn is_ascii_hexdigit(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_hexdigit())
     }

     #[inline]
     fn is_ascii_punctuation(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_punctuation())
     }

     #[inline]
     fn is_ascii_graphic(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_graphic())
     }

     #[inline]
     fn is_ascii_whitespace(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_whitespace())
     }

     #[inline]
     fn is_ascii_control(&self) -> bool {
         self.bytes().all(|b| b.is_ascii_control())
     }
 }
	// Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions
	// are met:
	//
	// * Redistributions of source code must retain the above copyright
	// notice, this list of conditions and the following disclaimer.
	// * Redistributions in binary form must reproduce the above copyright
	// notice, this list of conditions and the following disclaimer in
	// the documentation and/or other materials provided with the
	// distribution.
	// * Neither the name of Baidu, Inc., nor the names of its
	// contributors may be used to endorse or promote products derived
	// from this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	//! Operations on ASCII strings and characters.
	//!
	//! Most string operations in Rust act on UTF-8 strings. However, at times it
	//! makes more sense to only consider the ASCII character set for a specific
	//! operation.
	//!
	//! The [`AsciiExt`] trait provides methods that allow for character
	//! operations that only act on the ASCII subset and leave non-ASCII characters
	//! alone.
	//!
	//! The [`escape_default`] function provides an iterator over the bytes of an
	//! escaped version of the character given.
	//!
	//! [`AsciiExt`]: trait.AsciiExt.html
	//! [`escape_default`]: fn.escape_default.html

	use alloc::vec::Vec;
	use alloc::string::String;

	pub use core::ascii::{EscapeDefault, escape_default};

	/// Extension methods for ASCII-subset only operations.
	///
	/// Be aware that operations on seemingly non-ASCII characters can sometimes
	/// have unexpected results.
	///
	pub trait AsciiExt {
	/// Container type for copied ASCII characters.
	type Owned;

	/// Checks if the value is within the ASCII range.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii(&self) -> bool;

	/// Makes a copy of the value in its ASCII upper case equivalent.
	///
	/// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
	/// but non-ASCII letters are unchanged.
	///
	/// To uppercase the value in-place, use [`make_ascii_uppercase`].
	///
	/// To uppercase ASCII characters in addition to non-ASCII characters, use
	/// [`str::to_uppercase`].
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	///
	#[allow(deprecated)]
	fn to_ascii_uppercase(&self) -> Self::Owned;

	/// Makes a copy of the value in its ASCII lower case equivalent.
	///
	/// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
	/// but non-ASCII letters are unchanged.
	///
	/// To lowercase the value in-place, use [`make_ascii_lowercase`].
	///
	/// To lowercase ASCII characters in addition to non-ASCII characters, use
	/// [`str::to_lowercase`].
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	///
	#[allow(deprecated)]
	fn to_ascii_lowercase(&self) -> Self::Owned;

	/// Checks that two values are an ASCII case-insensitive match.
	///
	/// Same as `to_ascii_lowercase(a) == to_ascii_lowercase(b)`,
	/// but without allocating and copying temporaries.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn eq_ignore_ascii_case(&self, other: &Self) -> bool;

	/// Converts this type to its ASCII upper case equivalent in-place.
	///
	/// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z',
	/// but non-ASCII letters are unchanged.
	///
	/// To return a new uppercased value without modifying the existing one, use
	/// [`to_ascii_uppercase`].
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	///
	fn make_ascii_uppercase(&mut self);

	/// Converts this type to its ASCII lower case equivalent in-place.
	///
	/// ASCII letters 'A' to 'Z' are mapped to 'a' to 'z',
	/// but non-ASCII letters are unchanged.
	///
	/// To return a new lowercased value without modifying the existing one, use
	/// [`to_ascii_lowercase`].
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	///
	fn make_ascii_lowercase(&mut self);

	/// Checks if the value is an ASCII alphabetic character:
	/// U+0041 'A' ... U+005A 'Z' or U+0061 'a' ... U+007A 'z'.
	/// For strings, true if all characters in the string are
	/// ASCII alphabetic.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_alphabetic(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII uppercase character:
	/// U+0041 'A' ... U+005A 'Z'.
	/// For strings, true if all characters in the string are
	/// ASCII uppercase.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_uppercase(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII lowercase character:
	/// U+0061 'a' ... U+007A 'z'.
	/// For strings, true if all characters in the string are
	/// ASCII lowercase.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_lowercase(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII alphanumeric character:
	/// U+0041 'A' ... U+005A 'Z', U+0061 'a' ... U+007A 'z', or
	/// U+0030 '0' ... U+0039 '9'.
	/// For strings, true if all characters in the string are
	/// ASCII alphanumeric.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_alphanumeric(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII decimal digit:
	/// U+0030 '0' ... U+0039 '9'.
	/// For strings, true if all characters in the string are
	/// ASCII digits.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_digit(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII hexadecimal digit:
	/// U+0030 '0' ... U+0039 '9', U+0041 'A' ... U+0046 'F', or
	/// U+0061 'a' ... U+0066 'f'.
	/// For strings, true if all characters in the string are
	/// ASCII hex digits.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_hexdigit(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII punctuation character:
	///
	/// U+0021 ... U+002F `! " # $ % & ' ( ) * + , - . /`
	/// U+003A ... U+0040 `: ; < = > ? @`
	/// U+005B ... U+0060 ``[ \\ ] ^ _ ` ``
	/// U+007B ... U+007E `{ \| } ~`
	///
	/// For strings, true if all characters in the string are
	/// ASCII punctuation.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_punctuation(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII graphic character:
	/// U+0021 '!' ... U+007E '~'.
	/// For strings, true if all characters in the string are
	/// ASCII graphic characters.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_graphic(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII whitespace character:
	/// U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED,
	/// U+000C FORM FEED, or U+000D CARRIAGE RETURN.
	/// For strings, true if all characters in the string are
	/// ASCII whitespace.
	///
	/// 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
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_whitespace(&self) -> bool { unimplemented!(); }

	/// Checks if the value is an ASCII control character:
	/// U+0000 NUL ... U+001F UNIT SEPARATOR, or U+007F DELETE.
	/// Note that most ASCII whitespace characters are control
	/// characters, but SPACE is not.
	///
	/// # Note
	///
	/// This method will be deprecated in favor of the identically-named
	/// inherent methods on `u8`, `char`, `[u8]` and `str`.
	fn is_ascii_control(&self) -> bool { unimplemented!(); }
	}

	macro_rules! delegating_ascii_methods {
	() => {
	#[inline]
	fn is_ascii(&self) -> bool { self.is_ascii() }

	#[inline]
	fn to_ascii_uppercase(&self) -> Self::Owned { self.to_ascii_uppercase() }

	#[inline]
	fn to_ascii_lowercase(&self) -> Self::Owned { self.to_ascii_lowercase() }

	#[inline]
	fn eq_ignore_ascii_case(&self, o: &Self) -> bool { self.eq_ignore_ascii_case(o) }

	#[inline]
	fn make_ascii_uppercase(&mut self) { self.make_ascii_uppercase(); }

	#[inline]
	fn make_ascii_lowercase(&mut self) { self.make_ascii_lowercase(); }
	}
	}

	macro_rules! delegating_ascii_ctype_methods {
	() => {
	#[inline]
	fn is_ascii_alphabetic(&self) -> bool { self.is_ascii_alphabetic() }

	#[inline]
	fn is_ascii_uppercase(&self) -> bool { self.is_ascii_uppercase() }

	#[inline]
	fn is_ascii_lowercase(&self) -> bool { self.is_ascii_lowercase() }

	#[inline]
	fn is_ascii_alphanumeric(&self) -> bool { self.is_ascii_alphanumeric() }

	#[inline]
	fn is_ascii_digit(&self) -> bool { self.is_ascii_digit() }

	#[inline]
	fn is_ascii_hexdigit(&self) -> bool { self.is_ascii_hexdigit() }

	#[inline]
	fn is_ascii_punctuation(&self) -> bool { self.is_ascii_punctuation() }

	#[inline]
	fn is_ascii_graphic(&self) -> bool { self.is_ascii_graphic() }

	#[inline]
	fn is_ascii_whitespace(&self) -> bool { self.is_ascii_whitespace() }

	#[inline]
	fn is_ascii_control(&self) -> bool { self.is_ascii_control() }
	}
	}

	#[allow(deprecated)]
	impl AsciiExt for u8 {
	type Owned = u8;

	delegating_ascii_methods!();
	delegating_ascii_ctype_methods!();
	}

	#[allow(deprecated)]
	impl AsciiExt for char {
	type Owned = char;

	delegating_ascii_methods!();
	delegating_ascii_ctype_methods!();
	}

	#[allow(deprecated)]
	impl AsciiExt for [u8] {
	type Owned = Vec<u8>;

	delegating_ascii_methods!();

	#[inline]
	fn is_ascii_alphabetic(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_alphabetic())
	}

	#[inline]
	fn is_ascii_uppercase(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_uppercase())
	}

	#[inline]
	fn is_ascii_lowercase(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_lowercase())
	}

	#[inline]
	fn is_ascii_alphanumeric(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_alphanumeric())
	}

	#[inline]
	fn is_ascii_digit(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_digit())
	}

	#[inline]
	fn is_ascii_hexdigit(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_hexdigit())
	}

	#[inline]
	fn is_ascii_punctuation(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_punctuation())
	}

	#[inline]
	fn is_ascii_graphic(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_graphic())
	}

	#[inline]
	fn is_ascii_whitespace(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_whitespace())
	}

	#[inline]
	fn is_ascii_control(&self) -> bool {
	self.iter().all(\|b\| b.is_ascii_control())
	}
	}

	#[allow(deprecated)]
	impl AsciiExt for str {
	type Owned = String;

	delegating_ascii_methods!();

	#[inline]
	fn is_ascii_alphabetic(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_alphabetic())
	}

	#[inline]
	fn is_ascii_uppercase(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_uppercase())
	}

	#[inline]
	fn is_ascii_lowercase(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_lowercase())
	}

	#[inline]
	fn is_ascii_alphanumeric(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_alphanumeric())
	}

	#[inline]
	fn is_ascii_digit(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_digit())
	}

	#[inline]
	fn is_ascii_hexdigit(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_hexdigit())
	}

	#[inline]
	fn is_ascii_punctuation(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_punctuation())
	}

	#[inline]
	fn is_ascii_graphic(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_graphic())
	}

	#[inline]
	fn is_ascii_whitespace(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_whitespace())
	}

	#[inline]
	fn is_ascii_control(&self) -> bool {
	self.bytes().all(\|b\| b.is_ascii_control())
	}
	}