mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-18 09:03:18 +00:00
78 lines
2.2 KiB
Rust
78 lines
2.2 KiB
Rust
#![feature(plugin)]
|
|
#![plugin(clippy)]
|
|
|
|
#![allow(unused)]
|
|
#![deny(invalid_regex, trivial_regex, regex_macro)]
|
|
|
|
extern crate regex;
|
|
|
|
use regex::Regex;
|
|
|
|
const OPENING_PAREN : &'static str = "(";
|
|
const NOT_A_REAL_REGEX : &'static str = "foobar";
|
|
|
|
fn syntax_error() {
|
|
let pipe_in_wrong_position = Regex::new("|");
|
|
//~^ERROR: regex syntax error: empty alternate
|
|
let wrong_char_ranice = Regex::new("[z-a]");
|
|
//~^ERROR: regex syntax error: invalid character class range
|
|
let some_unicode = Regex::new("[é-è]");
|
|
//~^ERROR: regex syntax error: invalid character class range
|
|
|
|
let some_regex = Regex::new(OPENING_PAREN);
|
|
//~^ERROR: regex syntax error on position 0: unclosed
|
|
|
|
let closing_paren = ")";
|
|
let not_linted = Regex::new(closing_paren);
|
|
}
|
|
|
|
fn trivial_regex() {
|
|
let trivial_eq = Regex::new("^foobar$");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `==` on `str`s
|
|
|
|
let trivial_starts_with = Regex::new("^foobar");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::starts_with`
|
|
|
|
let trivial_ends_with = Regex::new("foobar$");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::ends_with`
|
|
|
|
let trivial_contains = Regex::new("foobar");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::contains`
|
|
|
|
let trivial_contains = Regex::new(NOT_A_REAL_REGEX);
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::contains`
|
|
|
|
let trivial_backslash = Regex::new("a\\.b");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::contains`
|
|
|
|
// unlikely corner cases
|
|
let trivial_empty = Regex::new("");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP the regex is unlikely to be useful
|
|
|
|
let trivial_empty = Regex::new("^");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP the regex is unlikely to be useful
|
|
|
|
let trivial_empty = Regex::new("^$");
|
|
//~^ERROR: trivial regex
|
|
//~|HELP consider using `str::is_empty`
|
|
|
|
// non-trivial regexes
|
|
let non_trivial_dot = Regex::new("a.b");
|
|
let non_trivial_eq = Regex::new("^foo|bar$");
|
|
let non_trivial_starts_with = Regex::new("^foo|bar");
|
|
let non_trivial_ends_with = Regex::new("^foo|bar");
|
|
let non_trivial_ends_with = Regex::new("foo|bar");
|
|
}
|
|
|
|
fn main() {
|
|
syntax_error();
|
|
trivial_regex();
|
|
}
|