vec-reg

Generalized regex like pattern match for vector.

Install

# Cargo.toml
[dependencies]
vec-reg = "0.4.0"

Usage

Example without macro:

use vec_reg::{Regex, CompiledRegex};

let is_fizz = |x: &i32| x % 3 == 0;
let is_buzz = |x: &i32| x % 5 == 0;
let is_fizz_buzz = |x: &i32| x % 15 == 0;
let reg = Regex::concat(
    Regex::satisfy(is_fizz),
    Regex::repeat1(Regex::concat(Regex::satisfy(is_buzz), Regex::satisfy(is_fizz_buzz))),
)
.compile();
assert!(!reg.is_full_match(&vec![1, 2, 3]));
assert!(reg.is_full_match(&vec![3, 5, 15]));
assert!(reg.is_full_match(&vec![6, 10, 15, 10, 30]));

Example with macro:

use vec_reg::{Regex, CompiledRegex, vec_reg};

let is_fizz = |x: &i32| x % 3 == 0;
let is_buzz = |x: &i32| x % 5 == 0;
let reg = vec_reg!([is_fizz]([is_buzz][|x| x % 15 == 0])+).compile();    
assert!(!reg.is_full_match(&vec![1, 2, 3]));
assert!(reg.is_full_match(&vec![3, 5, 15]));
assert!(reg.is_full_match(&vec![6, 10, 15, 10, 30]));

Example capture:

use vec_reg::{Regex, CompiledRegex, vec_reg};

let is_even = |x: &i32| x % 2 == 0;
let is_odd = |x: &i32| x % 2 == 1;
let reg = vec_reg!(([is_even]+)[is_even]([is_odd]+)).compile();
let captures = reg.captures(&[2, 4, 6, 3, 5, 7]);
assert!(captures.is_some());
assert_eq!(captures.as_ref().unwrap().len(), 2);

let capture_0 = &captures.as_ref().unwrap()[0];
assert_eq!(capture_0.start, 0);
assert_eq!(capture_0.end, 1);
assert_eq!(&capture_0.values, &vec![&2, &4]);

let capture_1 = &captures.as_ref().unwrap()[1];
assert_eq!(capture_1.start, 3);
assert_eq!(capture_1.end, 5);
assert_eq!(&capture_1.values, &vec![&3, &5, &7]);