#[macro_use]
extern crate criterion;
use criterion::Criterion;
use std::time::Duration;
use fancy_regex::internal::{analyze, compile, run_default};
use fancy_regex::Expr;
use regex::Regex;
fn parse_lifetime_re(c: &mut Criterion) {
c.bench_function("parse_lifetime_re", |b| {
b.iter(|| Expr::parse_tree("\\'[a-zA-Z_][a-zA-Z0-9_]*(?!\\')\\b").unwrap())
});
}
fn parse_literal_re(c: &mut Criterion) {
c.bench_function("parse_literal_re", |b| {
b.iter(|| Expr::parse_tree("^\\\\([!-/:-@\\[-`\\{-~aftnrv]|[0-7]{1,3}|x[0-9a-fA-F]{2}|x\\{[0-9a-fA-F]{1,6}\\})").unwrap())
});
}
fn parse_literal_re_regex(c: &mut Criterion) {
c.bench_function("parse_literal_re_regex", |b| {
b.iter(|| Regex::new("^\\\\([!-/:-@\\[-`\\{-~aftnrv]|[0-7]{1,3}|x[0-9a-fA-F]{2}|x\\{[0-9a-fA-F]{1,6}\\})").unwrap())
});
}
fn parse_misc(c: &mut Criterion) {
c.bench_function("parse_misc", |b| {
b.iter(|| Expr::parse_tree("^\\p{L}|\\p{N}|\\s|.|\\d").unwrap())
});
}
fn analyze_literal_re(c: &mut Criterion) {
let re = "^\\\\([!-/:-@\\[-`\\{-~aftnrv]|[0-7]{1,3}|x[0-9a-fA-F]{2}|x\\{[0-9a-fA-F]{1,6}\\})";
let tree = Expr::parse_tree(re).unwrap();
c.bench_function("analyze_literal_re", |b| b.iter(|| analyze(&tree).unwrap()));
}
fn run_backtrack(c: &mut Criterion) {
let tree = Expr::parse_tree("^.*?(([ab]+)\\1b)").unwrap();
let a = analyze(&tree).unwrap();
let p = compile(&a).unwrap();
c.bench_function("run_backtrack", |b| {
b.iter(|| {
let result = run_default(&p, "babab", 0).unwrap();
assert_eq!(result, Some(vec![0, 5, 0, 2]));
return result;
})
});
}
fn run_tricky(c: &mut Criterion) {
let tree = Expr::parse_tree("(a|b|ab)*bc").unwrap();
let a = analyze(&tree).unwrap();
let p = compile(&a).unwrap();
let mut s = String::new();
for _ in 0..28 {
s.push_str("ab");
}
s.push_str("ac");
c.bench_function("run_tricky", |b| b.iter(|| run_default(&p, &s, 0).unwrap()));
}
fn run_backtrack_limit(c: &mut Criterion) {
let tree = Expr::parse_tree("(?i)(a|b|ab)*(?=c)").unwrap();
let a = analyze(&tree).unwrap();
let p = compile(&a).unwrap();
let s = "abababababababababababababababababababababababababababab";
c.bench_function("run_backtrack_limit", |b| {
b.iter(|| run_default(&p, &s, 0).unwrap_err())
});
}
criterion_group!(
name = benches;
config = Criterion::default().warm_up_time(Duration::from_secs(10));
targets = parse_lifetime_re,
parse_literal_re,
parse_literal_re_regex,
parse_misc,
analyze_literal_re,
run_backtrack,
run_tricky,
);
criterion_group!(
name = slow_benches;
config = Criterion::default().sample_size(10);
targets = run_backtrack_limit,
);
criterion_main!(benches, slow_benches);