vec-reg

向量通用的正则表达式模式匹配

安装

# Cargo.toml
[dependencies]
vec-reg = "0.7.1"

用法

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])(?P<"FizzBuzz">[|x| x % 15 == 0]))+).compile();    
assert!(reg.is_match(&[1, 2, 3, 5, 15, 20]));
assert!(reg.is_full_match(&[3, 5, 15, 10, 30]));

let find_result = reg.find(&[1,3,5,15]);
assert!(find_result.is_some());
assert_eq!(find_result.as_ref().unwrap().range(), 1..4);

let captures = reg.captures(&[1, 3, 5, 15, 10, 30, 2]);
assert!(captures.is_some());
// 0th capture always correspond to the entire match.
assert_eq!(captures.as_ref().unwrap().get(0).unwrap().range(), 1..6);

assert_eq!(captures.as_ref().unwrap().get(1).unwrap().range(), 1..2);
assert_eq!(captures.as_ref().unwrap().get(1).unwrap().values(), &[3]);

// Named capture can be accessed both index and name.
assert_eq!(captures.as_ref().unwrap().get(3).unwrap().values(), &[30]);
assert_eq!(captures.as_ref().unwrap().get(3).unwrap().range(), 5..6);

assert_eq!(captures.as_ref().unwrap().name("FizzBuzz").unwrap().values(), &[30]);
assert_eq!(captures.as_ref().unwrap().name("FizzBuzz").unwrap().range(), 5..6);

支持的语法