Function abortable_parser::combinators::not

pub fn not<I, O>(i: I, result: Result<I, O>) -> Result<I, ()> where
    I: InputIter, 

Turns a Result to it's inverse.

Result::Fail becomes Result::Complete and Result::Complete becomes Result::Fail. You must pass in an iterator at the appropriate spot for the next combinator to start at.

The not! macro provides syntactic sugar for using this combinator properly.