Macro abortable_parser::must [−][src]
macro_rules! must { ($i:expr, $f:ident!( $( $args:tt )* ) ) => { ... }; ($i:expr, $f:ident) => { ... }; }
Turns Result::Fail
into Result::Abort
.
Allows you to turn any parse failure into a hard abort of the parser.
use abortable_parser::iter; let iter: iter::SliceIter<u8> = "foo".into(); let tok = must!(iter, text_token!("foo")); let fail = must!(iter, text_token!("bar"));