wright 0.10.1

The wright programming language compiler and tooling.
Documentation 
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//! Parser function combinator useful for discarding errors. This can transform a parser from returning a [`Result`]
//! to returning an [`Option`].

use super::{BoxedParserFn, NodeParserOption, NodeParserResult};
use crate::parser::state::ParserState;

/// Return a [Box]xed parser function that returns an [`Option`] rather than a [`Result`].
pub fn discard_errors<'src, PF, O>(parser_function: PF) -> BoxedParserFn<'src, NodeParserOption<O>>
where
    PF: (Fn(&mut ParserState<'src>) -> NodeParserResult<O>) + 'src,
{
    Box::new(move |parser_state: &mut ParserState<'_>| ((parser_function)(parser_state)).ok())
}