trim method
Returns a parser that consumes input before and after the receiver,
discards the excess input and only returns returns the result of the
receiver. The optional arguments are parsers that consume the excess
input. By default whitespace()
is used. Up to two arguments can be
provided to have different parsers on the left
and right
side.
For example, the parser letter().plus().trim()
returns ['a', 'b']
for the input ' ab\n'
and consumes the complete input string.
Implementation
Parser<T> trim([Parser<void>? left, Parser<void>? right]) =>
TrimmingParser<T>(this, left ??= whitespace(), right ??= left);