/rust/registry/src/index.crates.io-1949cf8c6b5b557f/nom-8.0.0/src/character/mod.rs

Source
//! Character specific parsers and combinators
//!
//! Functions recognizing specific characters

use core::marker::PhantomData;

use crate::error::ErrorKind;
use crate::FindToken;
use crate::IsStreaming;
use crate::Mode;
use crate::{error::ParseError, AsChar, Err, IResult, Input, Needed, Parser};

#[cfg(test)]
mod tests;

pub mod complete;
pub mod streaming;

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_alpha`")]
pub fn is_alphabetic(chr: u8) -> bool {
  matches!(chr, 0x41..=0x5A | 0x61..=0x7A)
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_dec_digit`")]
pub fn is_digit(chr: u8) -> bool {
  matches!(chr, 0x30..=0x39)
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_hex_digit`")]
pub fn is_hex_digit(chr: u8) -> bool {
  matches!(chr, 0x30..=0x39 | 0x41..=0x46 | 0x61..=0x66)
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_oct_digit`")]
pub fn is_oct_digit(chr: u8) -> bool {
  matches!(chr, 0x30..=0x37)
}

/// Tests if byte is ASCII binary digit: 0-1
///
/// # Example
///
/// ```
/// # use nom::character::is_bin_digit;
/// assert_eq!(is_bin_digit(b'a'), false);
/// assert_eq!(is_bin_digit(b'2'), false);
/// assert_eq!(is_bin_digit(b'0'), true);
/// assert_eq!(is_bin_digit(b'1'), true);
/// ```
#[inline]
pub fn is_bin_digit(chr: u8) -> bool {
  matches!(chr, 0x30..=0x31)
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_alphanum`")]
pub fn is_alphanumeric(chr: u8) -> bool {
  AsChar::is_alphanum(chr)
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_space`")]
pub fn is_space(chr: u8) -> bool {
  chr == b' ' || chr == b'\t'
}

#[inline]
#[doc(hidden)]
#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_newline`")]
pub fn is_newline(chr: u8) -> bool {
  chr == b'\n'
}

/// Recognizes one character.
///
/// # Example
///
/// ```
/// # use nom::{Err, error::{ErrorKind, Error}, Needed, IResult};
/// # use nom::character::streaming::char;
/// fn parser(i: &str) -> IResult<&str, char> {
///     char('a')(i)
/// }
/// assert_eq!(parser("abc"), Ok(("bc", 'a')));
/// assert_eq!(parser("bc"), Err(Err::Error(Error::new("bc", ErrorKind::Char))));
/// assert_eq!(parser(""), Err(Err::Incomplete(Needed::new(1))));
/// ```
pub fn char<I, Error: ParseError<I>>(c: char) -> impl Parser<I, Output = char, Error = Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
{
  Char { c, e: PhantomData }
}

/// Parser implementation for [char()]
pub struct Char<E> {
  c: char,
  e: PhantomData<E>,
}

impl<I, Error: ParseError<I>> Parser<I> for Char<Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
{
  type Output = char;
  type Error = Error;
  #[inline(always)]
  fn process<OM: crate::OutputMode>(
    &mut self,
    i: I,
  ) -> crate::PResult<OM, I, Self::Output, Self::Error> {
    match (i).iter_elements().next().map(|t| {
      let b = t.as_char() == self.c;
      (&self.c, b)
    }) {
      None => {
        if OM::Incomplete::is_streaming() {
          Err(Err::Incomplete(Needed::new(self.c.len() - i.input_len())))
        } else {
          Err(Err::Error(OM::Error::bind(|| Error::from_char(i, self.c))))
        }
      }
      Some((_, false)) => Err(Err::Error(OM::Error::bind(|| Error::from_char(i, self.c)))),
      Some((c, true)) => Ok((i.take_from(c.len()), OM::Output::bind(|| c.as_char()))),
    }
  }
}

/// Recognizes one character and checks that it satisfies a predicate
///
/// # Example
///
/// ```
/// # use nom::{Err, error::{ErrorKind, Error}, Needed, IResult};
/// # use nom::character::complete::satisfy;
/// fn parser(i: &str) -> IResult<&str, char> {
///     satisfy(|c| c == 'a' || c == 'b')(i)
/// }
/// assert_eq!(parser("abc"), Ok(("bc", 'a')));
/// assert_eq!(parser("cd"), Err(Err::Error(Error::new("cd", ErrorKind::Satisfy))));
/// assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Satisfy))));
/// ```
pub fn satisfy<F, I, Error: ParseError<I>>(
  predicate: F,
) -> impl Parser<I, Output = char, Error = Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
  F: Fn(char) -> bool,
{
  Satisfy {
    predicate,
    make_error: |i: I| Error::from_error_kind(i, ErrorKind::Satisfy),
  }
}

/// Parser implementation for [satisfy]
pub struct Satisfy<F, MakeError> {
  predicate: F,
  make_error: MakeError,
}

impl<I, Error: ParseError<I>, F, MakeError> Parser<I> for Satisfy<F, MakeError>
where
  I: Input,
  <I as Input>::Item: AsChar,
  F: Fn(char) -> bool,
  MakeError: Fn(I) -> Error,
{
  type Output = char;
  type Error = Error;

  #[inline(always)]
  fn process<OM: crate::OutputMode>(
    &mut self,
    i: I,
  ) -> crate::PResult<OM, I, Self::Output, Self::Error> {
    match (i).iter_elements().next().map(|t| {
      let c = t.as_char();
      let b = (self.predicate)(c);
      (c, b)
    }) {
      None => {
        if OM::Incomplete::is_streaming() {
          Err(Err::Incomplete(Needed::Unknown))
        } else {
          Err(Err::Error(OM::Error::bind(|| (self.make_error)(i))))
        }
      }
      Some((_, false)) => Err(Err::Error(OM::Error::bind(|| (self.make_error)(i)))),
      Some((c, true)) => Ok((i.take_from(c.len()), OM::Output::bind(|| c.as_char()))),
    }
  }
}

/// Recognizes one of the provided characters.
///
/// # Example
///
/// ```
/// # use nom::{Err, error::ErrorKind};
/// # use nom::character::complete::one_of;
/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("abc")("b"), Ok(("", 'b')));
/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")("bc"), Err(Err::Error(("bc", ErrorKind::OneOf))));
/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")(""), Err(Err::Error(("", ErrorKind::OneOf))));
/// ```
pub fn one_of<I, T, Error: ParseError<I>>(list: T) -> impl Parser<I, Output = char, Error = Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
  T: FindToken<char>,
{
  Satisfy {
    predicate: move |c: char| list.find_token(c),
    make_error: move |i| Error::from_error_kind(i, ErrorKind::OneOf),
  }
}

//. Recognizes a character that is not in the provided characters.
///
/// # Example
///
/// ```
/// # use nom::{Err, error::ErrorKind, Needed};
/// # use nom::character::streaming::none_of;
/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("abc")("z"), Ok(("", 'z')));
/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("ab")("a"), Err(Err::Error(("a", ErrorKind::NoneOf))));
/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("a")(""), Err(Err::Incomplete(Needed::Unknown)));
/// ```
pub fn none_of<I, T, Error: ParseError<I>>(list: T) -> impl Parser<I, Output = char, Error = Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
  T: FindToken<char>,
{
  Satisfy {
    predicate: move |c: char| !list.find_token(c),
    make_error: move |i| Error::from_error_kind(i, ErrorKind::NoneOf),
  }
}

// Matches one byte as a character. Note that the input type will
/// accept a `str`, but not a `&[u8]`, unlike many other nom parsers.
///
/// # Example
///
/// ```
/// # use nom::{character::complete::anychar, Err, error::{Error, ErrorKind}, IResult};
/// fn parser(input: &str) -> IResult<&str, char> {
///     anychar(input)
/// }
///
/// assert_eq!(parser("abc"), Ok(("bc",'a')));
/// assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Eof))));
/// ```
pub fn anychar<T, E: ParseError<T>>(input: T) -> IResult<T, char, E>
where
  T: Input,
  <T as Input>::Item: AsChar,
{
  let mut it = input.iter_elements();
  match it.next() {
    None => Err(Err::Error(E::from_error_kind(input, ErrorKind::Eof))),
    Some(c) => Ok((input.take_from(c.len()), c.as_char())),
  }
}

/// Parser implementation for char
pub struct AnyChar<E> {
  e: PhantomData<E>,
}

impl<I, Error: ParseError<I>> Parser<I> for AnyChar<Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
{
  type Output = char;
  type Error = Error;

  fn process<OM: crate::OutputMode>(
    &mut self,
    i: I,
  ) -> crate::PResult<OM, I, Self::Output, Self::Error> {
    match (i).iter_elements().next() {
      None => {
        if OM::Incomplete::is_streaming() {
          Err(Err::Incomplete(Needed::new(1)))
        } else {
          Err(Err::Error(OM::Error::bind(|| {
            Error::from_error_kind(i, ErrorKind::Eof)
          })))
        }
      }
      Some(c) => Ok((i.take_from(c.len()), OM::Output::bind(|| c.as_char()))),
    }
  }
}

/// Recognizes one or more ASCII numerical characters: 0-9
///
/// *Streaming version*: Will return `Err(nom::Err::Incomplete(_))` if there's not enough input data,
/// or if no terminating token is found (a non digit character).
/// # Example
///
/// ```
/// # use nom::{Err, error::ErrorKind, IResult, Needed};
/// # use nom::character::streaming::digit1;
/// assert_eq!(digit1::<_, (_, ErrorKind)>("21c"), Ok(("c", "21")));
/// assert_eq!(digit1::<_, (_, ErrorKind)>("c1"), Err(Err::Error(("c1", ErrorKind::Digit))));
/// assert_eq!(digit1::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));
/// ```
pub fn digit1<T, E: ParseError<T>>() -> impl Parser<T, Output = T, Error = E>
where
  T: Input,
  <T as Input>::Item: AsChar,
{
  Digit1 { e: PhantomData }
}

/// Parser implementation for [digit1]
pub struct Digit1<E> {
  e: PhantomData<E>,
}

impl<I: Input, E: ParseError<I>> Parser<I> for Digit1<E>
where
  <I as Input>::Item: AsChar,
{
  type Output = I;

  type Error = E;

  #[inline]
  fn process<OM: crate::OutputMode>(
    &mut self,
    input: I,
  ) -> crate::PResult<OM, I, Self::Output, Self::Error> {
    input.split_at_position_mode1::<OM, _, _>(|item| !item.is_dec_digit(), ErrorKind::Digit)
  }
}

/// Recognizes zero or more spaces, tabs, carriage returns and line feeds.
///
/// *Streaming version*: Will return `Err(nom::Err::Incomplete(_))` if there's not enough input data,
/// or if no terminating token is found (a non space character).
/// # Example
///
/// ```
/// # use nom::{Err, error::ErrorKind, IResult, Needed};
/// # use nom::character::streaming::multispace0;
/// assert_eq!(multispace0::<_, (_, ErrorKind)>(" \t\n\r21c"), Ok(("21c", " \t\n\r")));
/// assert_eq!(multispace0::<_, (_, ErrorKind)>("Z21c"), Ok(("Z21c", "")));
/// assert_eq!(multispace0::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));
/// ```
pub fn multispace0<T, E: ParseError<T>>() -> impl Parser<T, Output = T, Error = E>
where
  T: Input,
  <T as Input>::Item: AsChar,
{
  MultiSpace0 { e: PhantomData }
  /*input.split_at_position(|item| {
    let c = item.as_char();
    !(c == ' ' || c == '\t' || c == '\r' || c == '\n')
  })*/
}

/// Parser implementation for [multispace0()]
pub struct MultiSpace0<E> {
  e: PhantomData<E>,
}

impl<I, Error: ParseError<I>> Parser<I> for MultiSpace0<Error>
where
  I: Input,
  <I as Input>::Item: AsChar,
{
  type Output = I;
  type Error = Error;

  fn process<OM: crate::OutputMode>(
    &mut self,
    i: I,
  ) -> crate::PResult<OM, I, Self::Output, Self::Error> {
    i.split_at_position_mode::<OM, _, _>(|item| {
      let c = item.as_char();
      !(c == ' ' || c == '\t' || c == '\r' || c == '\n')
    })
  }
}

Coverage Report

Created: 2025-12-20 06:48

Line	Count	Source
1		//! Character specific parsers and combinators
2		//!
3		//! Functions recognizing specific characters
4
5		use core::marker::PhantomData;
6
7		use crate::error::ErrorKind;
8		use crate::FindToken;
9		use crate::IsStreaming;
10		use crate::Mode;
11		use crate::{error::ParseError, AsChar, Err, IResult, Input, Needed, Parser};
12
13		#[cfg(test)]
14		mod tests;
15
16		pub mod complete;
17		pub mod streaming;
18
19		#[inline]
20		#[doc(hidden)]
21		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_alpha`")]
22	0	pub fn is_alphabetic(chr: u8) -> bool {
23	0	matches!(chr, 0x41..=0x5A \| 0x61..=0x7A)
24	0	}
25
26		#[inline]
27		#[doc(hidden)]
28		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_dec_digit`")]
29	0	pub fn is_digit(chr: u8) -> bool {
30	0	matches!(chr, 0x30..=0x39)
31	0	}
32
33		#[inline]
34		#[doc(hidden)]
35		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_hex_digit`")]
36	0	pub fn is_hex_digit(chr: u8) -> bool {
37	0	matches!(chr, 0x30..=0x39 \| 0x41..=0x46 \| 0x61..=0x66)
38	0	}
39
40		#[inline]
41		#[doc(hidden)]
42		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_oct_digit`")]
43	0	pub fn is_oct_digit(chr: u8) -> bool {
44	0	matches!(chr, 0x30..=0x37)
45	0	}
46
47		/// Tests if byte is ASCII binary digit: 0-1
48		///
49		/// # Example
50		///
51		/// ```
52		/// # use nom::character::is_bin_digit;
53		/// assert_eq!(is_bin_digit(b'a'), false);
54		/// assert_eq!(is_bin_digit(b'2'), false);
55		/// assert_eq!(is_bin_digit(b'0'), true);
56		/// assert_eq!(is_bin_digit(b'1'), true);
57		/// ```
58		#[inline]
59	0	pub fn is_bin_digit(chr: u8) -> bool {
60	0	matches!(chr, 0x30..=0x31)
61	0	}
62
63		#[inline]
64		#[doc(hidden)]
65		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_alphanum`")]
66	0	pub fn is_alphanumeric(chr: u8) -> bool {
67	0	AsChar::is_alphanum(chr)
68	0	}
69
70		#[inline]
71		#[doc(hidden)]
72		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_space`")]
73	0	pub fn is_space(chr: u8) -> bool {
74	0	chr == b' ' \|\| chr == b'\t'
75	0	}
76
77		#[inline]
78		#[doc(hidden)]
79		#[deprecated(since = "8.0.0", note = "Replaced with `AsChar::is_newline`")]
80	0	pub fn is_newline(chr: u8) -> bool {
81	0	chr == b'\n'
82	0	}
83
84		/// Recognizes one character.
85		///
86		/// # Example
87		///
88		/// ```
89		/// # use nom::{Err, error::{ErrorKind, Error}, Needed, IResult};
90		/// # use nom::character::streaming::char;
91		/// fn parser(i: &str) -> IResult<&str, char> {
92		/// char('a')(i)
93		/// }
94		/// assert_eq!(parser("abc"), Ok(("bc", 'a')));
95		/// assert_eq!(parser("bc"), Err(Err::Error(Error::new("bc", ErrorKind::Char))));
96		/// assert_eq!(parser(""), Err(Err::Incomplete(Needed::new(1))));
97		/// ```
98	0	pub fn char<I, Error: ParseError<I>>(c: char) -> impl Parser<I, Output = char, Error = Error>
99	0	where
100	0	I: Input,
101	0	<I as Input>::Item: AsChar,
102		{
103	0	Char { c, e: PhantomData }
104	0	} Unexecuted instantiation: nom::character::char::<&str, nom::error::Error<&str>> Unexecuted instantiation: nom::character::char::<_, _>
105
106		/// Parser implementation for [char()]
107		pub struct Char<E> {
108		c: char,
109		e: PhantomData<E>,
110		}
111
112		impl<I, Error: ParseError<I>> Parser<I> for Char<Error>
113		where
114		I: Input,
115		<I as Input>::Item: AsChar,
116		{
117		type Output = char;
118		type Error = Error;
119		#[inline(always)]
120	0	fn process<OM: crate::OutputMode>(
121	0	&mut self,
122	0	i: I,
123	0	) -> crate::PResult<OM, I, Self::Output, Self::Error> {
124	0	match (i).iter_elements().next().map(\|t\| {
125	0	let b = t.as_char() == self.c;
126	0	(&self.c, b)
127	0	}) { Unexecuted instantiation: <nom::character::Char<nom::error::Error<&str>> as nom::internal::Parser<&str>>::process::<nom::internal::OutputM<nom::internal::Emit, nom::internal::Emit, nom::internal::Complete>>::{closure#0} Unexecuted instantiation: <nom::character::Char<_> as nom::internal::Parser<_>>::process::<_>::{closure#0}
128		None => {
129	0	if OM::Incomplete::is_streaming() {
130	0	Err(Err::Incomplete(Needed::new(self.c.len() - i.input_len())))
131		} else {
132	0	Err(Err::Error(OM::Error::bind(\|\| Error::from_char(i, self.c)))) Unexecuted instantiation: <nom::character::Char<nom::error::Error<&str>> as nom::internal::Parser<&str>>::process::<nom::internal::OutputM<nom::internal::Emit, nom::internal::Emit, nom::internal::Complete>>::{closure#1} Unexecuted instantiation: <nom::character::Char<_> as nom::internal::Parser<_>>::process::<_>::{closure#1}
133		}
134		}
135	0	Some((_, false)) => Err(Err::Error(OM::Error::bind(\|\| Error::from_char(i, self.c)))), Unexecuted instantiation: <nom::character::Char<nom::error::Error<&str>> as nom::internal::Parser<&str>>::process::<nom::internal::OutputM<nom::internal::Emit, nom::internal::Emit, nom::internal::Complete>>::{closure#2} Unexecuted instantiation: <nom::character::Char<_> as nom::internal::Parser<_>>::process::<_>::{closure#2}
136	0	Some((c, true)) => Ok((i.take_from(c.len()), OM::Output::bind(\|\| c.as_char()))), Unexecuted instantiation: <nom::character::Char<nom::error::Error<&str>> as nom::internal::Parser<&str>>::process::<nom::internal::OutputM<nom::internal::Emit, nom::internal::Emit, nom::internal::Complete>>::{closure#3} Unexecuted instantiation: <nom::character::Char<_> as nom::internal::Parser<_>>::process::<_>::{closure#3}
137		}
138	0	} Unexecuted instantiation: <nom::character::Char<nom::error::Error<&str>> as nom::internal::Parser<&str>>::process::<nom::internal::OutputM<nom::internal::Emit, nom::internal::Emit, nom::internal::Complete>> Unexecuted instantiation: <nom::character::Char<_> as nom::internal::Parser<_>>::process::<_>
139		}
140
141		/// Recognizes one character and checks that it satisfies a predicate
142		///
143		/// # Example
144		///
145		/// ```
146		/// # use nom::{Err, error::{ErrorKind, Error}, Needed, IResult};
147		/// # use nom::character::complete::satisfy;
148		/// fn parser(i: &str) -> IResult<&str, char> {
149		/// satisfy(\|c\| c == 'a' \|\| c == 'b')(i)
150		/// }
151		/// assert_eq!(parser("abc"), Ok(("bc", 'a')));
152		/// assert_eq!(parser("cd"), Err(Err::Error(Error::new("cd", ErrorKind::Satisfy))));
153		/// assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Satisfy))));
154		/// ```
155	0	pub fn satisfy<F, I, Error: ParseError<I>>(
156	0	predicate: F,
157	0	) -> impl Parser<I, Output = char, Error = Error>
158	0	where
159	0	I: Input,
160	0	<I as Input>::Item: AsChar,
161	0	F: Fn(char) -> bool,
162		{
163		Satisfy {
164	0	predicate,
165	0	make_error: \|i: I\| Error::from_error_kind(i, ErrorKind::Satisfy),
166		}
167	0	}
168
169		/// Parser implementation for [satisfy]
170		pub struct Satisfy<F, MakeError> {
171		predicate: F,
172		make_error: MakeError,
173		}
174
175		impl<I, Error: ParseError<I>, F, MakeError> Parser<I> for Satisfy<F, MakeError>
176		where
177		I: Input,
178		<I as Input>::Item: AsChar,
179		F: Fn(char) -> bool,
180		MakeError: Fn(I) -> Error,
181		{
182		type Output = char;
183		type Error = Error;
184
185		#[inline(always)]
186	0	fn process<OM: crate::OutputMode>(
187	0	&mut self,
188	0	i: I,
189	0	) -> crate::PResult<OM, I, Self::Output, Self::Error> {
190	0	match (i).iter_elements().next().map(\|t\| {
191	0	let c = t.as_char();
192	0	let b = (self.predicate)(c);
193	0	(c, b)
194	0	}) {
195		None => {
196	0	if OM::Incomplete::is_streaming() {
197	0	Err(Err::Incomplete(Needed::Unknown))
198		} else {
199	0	Err(Err::Error(OM::Error::bind(\|\| (self.make_error)(i))))
200		}
201		}
202	0	Some((_, false)) => Err(Err::Error(OM::Error::bind(\|\| (self.make_error)(i)))),
203	0	Some((c, true)) => Ok((i.take_from(c.len()), OM::Output::bind(\|\| c.as_char()))),
204		}
205	0	}
206		}
207
208		/// Recognizes one of the provided characters.
209		///
210		/// # Example
211		///
212		/// ```
213		/// # use nom::{Err, error::ErrorKind};
214		/// # use nom::character::complete::one_of;
215		/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("abc")("b"), Ok(("", 'b')));
216		/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")("bc"), Err(Err::Error(("bc", ErrorKind::OneOf))));
217		/// assert_eq!(one_of::<_, _, (&str, ErrorKind)>("a")(""), Err(Err::Error(("", ErrorKind::OneOf))));
218		/// ```
219	0	pub fn one_of<I, T, Error: ParseError<I>>(list: T) -> impl Parser<I, Output = char, Error = Error>
220	0	where
221	0	I: Input,
222	0	<I as Input>::Item: AsChar,
223	0	T: FindToken<char>,
224		{
225		Satisfy {
226	0	predicate: move \|c: char\| list.find_token(c),
227	0	make_error: move \|i\| Error::from_error_kind(i, ErrorKind::OneOf),
228		}
229	0	}
230
231		//. Recognizes a character that is not in the provided characters.
232		///
233		/// # Example
234		///
235		/// ```
236		/// # use nom::{Err, error::ErrorKind, Needed};
237		/// # use nom::character::streaming::none_of;
238		/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("abc")("z"), Ok(("", 'z')));
239		/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("ab")("a"), Err(Err::Error(("a", ErrorKind::NoneOf))));
240		/// assert_eq!(none_of::<_, _, (_, ErrorKind)>("a")(""), Err(Err::Incomplete(Needed::Unknown)));
241		/// ```
242	0	pub fn none_of<I, T, Error: ParseError<I>>(list: T) -> impl Parser<I, Output = char, Error = Error>
243	0	where
244	0	I: Input,
245	0	<I as Input>::Item: AsChar,
246	0	T: FindToken<char>,
247		{
248		Satisfy {
249	0	predicate: move \|c: char\| !list.find_token(c),
250	0	make_error: move \|i\| Error::from_error_kind(i, ErrorKind::NoneOf),
251		}
252	0	}
253
254		// Matches one byte as a character. Note that the input type will
255		/// accept a `str`, but not a `&[u8]`, unlike many other nom parsers.
256		///
257		/// # Example
258		///
259		/// ```
260		/// # use nom::{character::complete::anychar, Err, error::{Error, ErrorKind}, IResult};
261		/// fn parser(input: &str) -> IResult<&str, char> {
262		/// anychar(input)
263		/// }
264		///
265		/// assert_eq!(parser("abc"), Ok(("bc",'a')));
266		/// assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Eof))));
267		/// ```
268	0	pub fn anychar<T, E: ParseError<T>>(input: T) -> IResult<T, char, E>
269	0	where
270	0	T: Input,
271	0	<T as Input>::Item: AsChar,
272		{
273	0	let mut it = input.iter_elements();
274	0	match it.next() {
275	0	None => Err(Err::Error(E::from_error_kind(input, ErrorKind::Eof))),
276	0	Some(c) => Ok((input.take_from(c.len()), c.as_char())),
277		}
278	0	}
279
280		/// Parser implementation for char
281		pub struct AnyChar<E> {
282		e: PhantomData<E>,
283		}
284
285		impl<I, Error: ParseError<I>> Parser<I> for AnyChar<Error>
286		where
287		I: Input,
288		<I as Input>::Item: AsChar,
289		{
290		type Output = char;
291		type Error = Error;
292
293	0	fn process<OM: crate::OutputMode>(
294	0	&mut self,
295	0	i: I,
296	0	) -> crate::PResult<OM, I, Self::Output, Self::Error> {
297	0	match (i).iter_elements().next() {
298		None => {
299	0	if OM::Incomplete::is_streaming() {
300	0	Err(Err::Incomplete(Needed::new(1)))
301		} else {
302	0	Err(Err::Error(OM::Error::bind(\|\| {
303	0	Error::from_error_kind(i, ErrorKind::Eof)
304	0	})))
305		}
306		}
307	0	Some(c) => Ok((i.take_from(c.len()), OM::Output::bind(\|\| c.as_char()))),
308		}
309	0	}
310		}
311
312		/// Recognizes one or more ASCII numerical characters: 0-9
313		///
314		/// Streaming version: Will return `Err(nom::Err::Incomplete(_))` if there's not enough input data,
315		/// or if no terminating token is found (a non digit character).
316		/// # Example
317		///
318		/// ```
319		/// # use nom::{Err, error::ErrorKind, IResult, Needed};
320		/// # use nom::character::streaming::digit1;
321		/// assert_eq!(digit1::<_, (_, ErrorKind)>("21c"), Ok(("c", "21")));
322		/// assert_eq!(digit1::<_, (_, ErrorKind)>("c1"), Err(Err::Error(("c1", ErrorKind::Digit))));
323		/// assert_eq!(digit1::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));
324		/// ```
325	0	pub fn digit1<T, E: ParseError<T>>() -> impl Parser<T, Output = T, Error = E>
326	0	where
327	0	T: Input,
328	0	<T as Input>::Item: AsChar,
329		{
330	0	Digit1 { e: PhantomData }
331	0	}
332
333		/// Parser implementation for [digit1]
334		pub struct Digit1<E> {
335		e: PhantomData<E>,
336		}
337
338		impl<I: Input, E: ParseError<I>> Parser<I> for Digit1<E>
339		where
340		<I as Input>::Item: AsChar,
341		{
342		type Output = I;
343
344		type Error = E;
345
346		#[inline]
347	0	fn process<OM: crate::OutputMode>(
348	0	&mut self,
349	0	input: I,
350	0	) -> crate::PResult<OM, I, Self::Output, Self::Error> {
351	0	input.split_at_position_mode1::<OM, _, _>(\|item\| !item.is_dec_digit(), ErrorKind::Digit)
352	0	}
353		}
354
355		/// Recognizes zero or more spaces, tabs, carriage returns and line feeds.
356		///
357		/// Streaming version: Will return `Err(nom::Err::Incomplete(_))` if there's not enough input data,
358		/// or if no terminating token is found (a non space character).
359		/// # Example
360		///
361		/// ```
362		/// # use nom::{Err, error::ErrorKind, IResult, Needed};
363		/// # use nom::character::streaming::multispace0;
364		/// assert_eq!(multispace0::<_, (_, ErrorKind)>(" \t\n\r21c"), Ok(("21c", " \t\n\r")));
365		/// assert_eq!(multispace0::<_, (_, ErrorKind)>("Z21c"), Ok(("Z21c", "")));
366		/// assert_eq!(multispace0::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));
367		/// ```
368	0	pub fn multispace0<T, E: ParseError<T>>() -> impl Parser<T, Output = T, Error = E>
369	0	where
370	0	T: Input,
371	0	<T as Input>::Item: AsChar,
372		{
373	0	MultiSpace0 { e: PhantomData }
374		/*input.split_at_position(\|item\| {
375		let c = item.as_char();
376		!(c == ' ' \|\| c == '\t' \|\| c == '\r' \|\| c == '\n')
377		})*/
378	0	}
379
380		/// Parser implementation for [multispace0()]
381		pub struct MultiSpace0<E> {
382		e: PhantomData<E>,
383		}
384
385		impl<I, Error: ParseError<I>> Parser<I> for MultiSpace0<Error>
386		where
387		I: Input,
388		<I as Input>::Item: AsChar,
389		{
390		type Output = I;
391		type Error = Error;
392
393	0	fn process<OM: crate::OutputMode>(
394	0	&mut self,
395	0	i: I,
396	0	) -> crate::PResult<OM, I, Self::Output, Self::Error> {
397	0	i.split_at_position_mode::<OM, _, _>(\|item\| {
398	0	let c = item.as_char();
399	0	!(c == ' ' \|\| c == '\t' \|\| c == '\r' \|\| c == '\n')
400	0	})
401	0	}
402		}