Macro abortable_parser::peek[−][src]

macro_rules! peek {
    ($i : expr, $f : ident! ($($args : tt) *)) => { ... };
    ($i : expr, $f : ident($($args : tt) *)) => { ... };
    ($i : expr, $f : ident) => { ... };
}

Expand description

Checks the given matcher without consuming the input.

let tok = peek!(iter, text_token!("foo"));