Function cucumber_expressions::parse::alternative
source · [−]pub fn alternative<'a, Input: 'a>(
input: Input
) -> IResult<Input, Alternative<Input>, Error<Input>> where
Input: Clone + Display + Offset + InputLength + InputTake + InputTakeAtPosition<Item = char> + Slice<RangeFrom<usize>> + InputIter + for<'s> Compare<&'s str>,
<Input as InputIter>::Item: AsChar + Copy,
Error<Input>: ParseError<Input>,
for<'s> &'s str: FindToken<<Input as InputIter>::Item>,
Expand description
Parses an alternative
as defined in the grammar spec.
Grammar
alternative = optional | (text-in-alternative+)
text-in-alternative = (- alternative-to-escape)
| ('\', alternative-to-escape)
alternative-to-escape = ' ' | '(' | '{' | '/' | '\'
Example
text
escaped\ whitespace
no-need-to-escape)}
🦀
(optional)
Errors
Irrecoverable Failure
Any Failure
of optional()
.