Function winnow::token::none_of

source · 
pub fn none_of<Input, Set, Error>(
    set: Set
) -> impl Parser<Input, <Input as Stream>::Token, Error>
where
    Input: StreamIsPartial + Stream,
    <Input as Stream>::Token: Clone,
    Set: ContainsToken<<Input as Stream>::Token>,
    Error: ParserError<Input>,
Expand description

Recognize a token that does not match a set of tokens

Complete version: Will return an error if there’s not enough input data.

Partial version: Will return Err(winnow::error::ErrMode::Incomplete(_)) if there’s not enough input data.

§Effective Signature

Assuming you are parsing a &str Stream:

pub fn none_of<'i>(set: impl ContainsToken<char>) -> impl Parser<&'i str, char, ContextError>

§Example

assert_eq!(none_of::<_, _, InputError<_>>(['a', 'b', 'c']).parse_peek("z"), Ok(("", 'z')));
assert_eq!(none_of::<_, _, InputError<_>>(['a', 'b']).parse_peek("a"), Err(ErrMode::Backtrack(InputError::new("a", ErrorKind::Verify))));
assert_eq!(none_of::<_, _, InputError<_>>('a').parse_peek(""), Err(ErrMode::Backtrack(InputError::new("", ErrorKind::Token))));
assert_eq!(none_of::<_, _, InputError<_>>(['a', 'b', 'c']).parse_peek(Partial::new("z")), Ok((Partial::new(""), 'z')));
assert_eq!(none_of::<_, _, InputError<_>>(['a', 'b']).parse_peek(Partial::new("a")), Err(ErrMode::Backtrack(InputError::new(Partial::new("a"), ErrorKind::Verify))));
assert_eq!(none_of::<_, _, InputError<_>>('a').parse_peek(Partial::new("")), Err(ErrMode::Incomplete(Needed::new(1))));