xrust::parser::combinators::debug

Function inspect

Source 
pub fn inspect<'a, P1, A, N: Node>(
    msg: &'a str,
    parser: P1,
) -> impl Fn(ParseInput<'_, N>) -> Result<(ParseInput<'_, N>, A), ParseError> + 'a
where
    P1: Fn(ParseInput<'_, N>) -> Result<(ParseInput<'_, N>, A), ParseError> + 'a,
Expand description

Emits a message to stderr from within the parser combinator. This can be useful for debugging.