// include the latest version of the regex crate in your Cargo.toml
extern crate regex;
use regex::Regex;
fn main() {
let regex = Regex::new(r"(?xs)(?(DEFINE)
(?<block>
\{ # Match opening brace
(?: # Start non-capturing group
[^{}]++ # Match non-brace characters without backtracking
| # or
(?&block) # Recursively match the last captured group
)* # Match 0 or more times
\} # Match closing brace
)
)(.+?)(?&block)(.+)").unwrap();
let string = "use strict;
use warnings;
my $text = << \"END\";
int max(int x, int y)
{
if (x > y)
{
return x;
}
else
{
return y;
}
}
// something here
";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/