Function failed_lazy

pub fn failed_lazy<'a, I, A, F>(f: F) -> Parser<'a, I, A>
where
    F: Fn() -> (ParseError<'a, I>, CommittedStatus) + 'a,
    I: 'a,
    A: 'a,

Returns a Parser that represents the result of the failed parsing.
失敗した解析結果を表すParserを返します。

• f: 失敗した解析結果を返すクロージャ
• f: Closure that returns failed analysis results.

Example

use oni_comb_parser_rs::prelude::*;

let text: &str = "x";
let input: Vec<char> = text.chars().collect::<Vec<_>>();

let parse_error: ParseError<char> = ParseError::of_in_complete();

let parser: Parser<char, ()> = failed_lazy(|| (parse_error.clone(), CommittedStatus::Committed));

let result: ParseResult<char, ()> = parser.parse(&input);

assert!(result.is_failure());
assert_eq!(result.failure().unwrap(), parse_error);