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macro_rules! searcher {
($name:ident, $re:expr, $haystack:expr) => (
searcher!($name, $re, $haystack, vec vec![]);
);
($name:ident, $re:expr, $haystack:expr, $($steps:expr,)*) => (
searcher!($name, $re, $haystack, vec vec![$($steps),*]);
);
($name:ident, $re:expr, $haystack:expr, $($steps:expr),*) => (
searcher!($name, $re, $haystack, vec vec![$($steps),*]);
);
($name:ident, $re:expr, $haystack:expr, vec $expect_steps:expr) => (
#[test]
#[allow(unused_imports)]
fn $name() {
use std::str::pattern::{Pattern, Searcher};
use std::str::pattern::SearchStep::{Match, Reject, Done};
let re = regex::Regex::new($re).unwrap();
let mut se = re.into_searcher($haystack);
let mut got_steps = vec![];
loop {
match se.next() {
Done => break,
step => { got_steps.push(step); }
}
}
assert_eq!(got_steps, $expect_steps);
}
);
}
searcher!(searcher_empty_regex_empty_haystack, r"", "", Match(0, 0));
searcher!(
searcher_empty_regex,
r"",
"ab",
Match(0, 0),
Reject(0, 1),
Match(1, 1),
Reject(1, 2),
Match(2, 2)
);
searcher!(searcher_empty_haystack, r"\d", "");
searcher!(searcher_one_match, r"\d", "5", Match(0, 1));
searcher!(searcher_no_match, r"\d", "a", Reject(0, 1));
searcher!(
searcher_two_adjacent_matches,
r"\d",
"56",
Match(0, 1),
Match(1, 2)
);
searcher!(
searcher_two_non_adjacent_matches,
r"\d",
"5a6",
Match(0, 1),
Reject(1, 2),
Match(2, 3)
);
searcher!(searcher_reject_first, r"\d", "a6", Reject(0, 1), Match(1, 2));
searcher!(
searcher_one_zero_length_matches,
r"\d*",
"a1b2",
Match(0, 0), // ^
Reject(0, 1), // a
Match(1, 2), // a1
Reject(2, 3), // a1b
Match(3, 4), // a1b2
);
searcher!(
searcher_many_zero_length_matches,
r"\d*",
"a1bbb2",
Match(0, 0), // ^
Reject(0, 1), // a
Match(1, 2), // a1
Reject(2, 3), // a1b
Match(3, 3), // a1bb
Reject(3, 4), // a1bb
Match(4, 4), // a1bbb
Reject(4, 5), // a1bbb
Match(5, 6), // a1bbba
);
searcher!(
searcher_unicode,
r".+?",
"Ⅰ1Ⅱ2",
Match(0, 3),
Match(3, 4),
Match(4, 7),
Match(7, 8)
);