Function chomp::parsers::satisfy_with
[−]
[src]
pub fn satisfy_with<I: Copy, T: Clone, F, P>(i: Input<I>, f: F, p: P) -> SimpleResult<I, T> where F: FnOnce(I) -> T, P: FnOnce(T) -> bool
Reads a single token, applies the transformation F
and then succeeds with the transformed
valeue if the predicate P
yields true on this transformed value.
use std::ascii::AsciiExt; use chomp::{parse_only, satisfy_with}; let r = parse_only( |i| satisfy_with(i, |c| AsciiExt::to_ascii_uppercase(&c), |c| c == b'T'), b"testing"); assert_eq!(r, Ok(b'T'));