tartan_parsers

Function opcode

Source 
pub fn opcode<I, O1, O2, E, P, Q>(
    description: &'static str,
    opcode_parser: P,
    body_parser: Q,
) -> impl FnMut(I) -> IResult<I, O2, E>
where
    I: Clone,
    P: Parser<I, O1, E>,
    Q: Parser<I, O2, E>,
    E: ParseError<I> + ContextError<I>,
Expand description

Combinator for productions that use a deterministic opcode

If a production is preceded by an unambiguous opcode, then we can avoid backtracking when parsing the rest. This enables better error messages in addition to faster parsing.