// 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"(?x)(
(\d+|pi|\\u03C0|\\u03A0|phi|\\u03C6|\\u03A6)
|
(abs|acos|cos|atan|tan|asin|sin|ceil|floor|sqrt|log|ln)\([^)]+\)
)
(
\s*([+\-*\/^]|mod)\s*
(
(\d+|pi|\\u03C0|\\u03A0|phi|\\u03C6|\\u03A6)
|
(abs|acos|cos|atan|tan|asin|sin|ceil|floor|sqrt|log|ln)\([^)]+\)
)
)*
\s*=").unwrap();
let string = "test text (1) pi=
test text (1 pi=
test text 1) pi=
test text (2) pi + 10 / 20=
test text (3) test pi ^ 10 / 20=
test text (30) 10 + 5=
test text (500) abs(10 + 5)=
test text (1) pi + 10 / 20=
test text 10*5=
test text pi / phi=
test text 10 mod phi=
test text 50 10 mod phi=
test text pi mod abs(phi)=
apple banana cherry apple 10 apple cherry banana hi 10 99+1=
";
// 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/