third_party_rust_nom/tests/inference.rs
2018-10-06 15:38:07 +02:00

54 lines
1.2 KiB
Rust

//! test type inference issues in parsee compilation
//#![feature(trace_macros)]
#![allow(dead_code)]
#![allow(unused_comparisons)]
#![allow(unused_variables)]
#![allow(unused_imports)]
#[macro_use]
extern crate nom;
use std::str;
use nom::{alpha, is_digit};
// issue #617
named!(multi<&[u8], () >, fold_many0!( take_while1!( is_digit ), (), |_, _| {}));
// issue #561
#[cfg(feature = "alloc")]
named!(
value<Vec<Vec<&str>>>,
do_parse!(
first_line: map_res!(is_not_s!("\n"), std::str::from_utf8)
>> rest:
many_m_n!(
0,
1,
separated_list!(
tag!("\n\t"),
map_res!(take_while!(call!(|c| c != b'\n')), std::str::from_utf8)
)
) >> (rest)
)
);
// issue #534
#[cfg(feature = "alloc")]
fn wrap_suffix(input: &Option<Vec<&[u8]>>) -> Option<String> {
if input.is_some() {
// I've tried both of the lines below individually and get the same error.
Some("hello".to_string())
//Some(str::from_utf8(u).expect("Found invalid UTF-8").to_string())
} else {
None
}
}
#[cfg(feature = "alloc")]
named!(parse_suffix<&[u8],Option<String>>,do_parse!(
u: opt!(many1!(alt_complete!(
tag!("%") | tag!("#") | tag!("@") | alpha
))) >>
(wrap_suffix(&u))
));