af1b58fa39
From the regex v1.10.0 release notes [1]:
This is a new minor release of regex that adds support for start
and end word boundary assertions. [...]
The new word boundary assertions are:
• \< or \b{start}: a Unicode start-of-word boundary (\W|\A
on the left, \w on the right).
• \> or \b{end}: a Unicode end-of-word boundary (\w on the
left, \W|\z on the right)).
• \b{start-half}: half of a Unicode start-of-word boundary
(\W|\A on the left).
• \b{end-half}: half of a Unicode end-of-word boundary
(\W|\z on the right).
[1]: https://github.com/rust-lang/regex/blob/master/CHANGELOG.md#1100-2023-10-09
125 lines
4.1 KiB
Rust
125 lines
4.1 KiB
Rust
#![allow(
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unused,
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clippy::needless_raw_strings,
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clippy::needless_raw_string_hashes,
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clippy::needless_borrow,
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clippy::needless_borrows_for_generic_args
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)]
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#![warn(clippy::invalid_regex, clippy::trivial_regex)]
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extern crate regex;
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use regex::bytes::{Regex as BRegex, RegexBuilder as BRegexBuilder, RegexSet as BRegexSet};
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use regex::{Regex, RegexBuilder, RegexSet};
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const OPENING_PAREN: &str = "(";
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const NOT_A_REAL_REGEX: &str = "foobar";
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fn syntax_error() {
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let pipe_in_wrong_position = Regex::new("|");
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//~^ ERROR: trivial regex
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let pipe_in_wrong_position_builder = RegexBuilder::new("|");
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//~^ ERROR: trivial regex
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let wrong_char_ranice = Regex::new("[z-a]");
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//~^ ERROR: regex syntax error: invalid character class range, the start must be <= th
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//~| NOTE: `-D clippy::invalid-regex` implied by `-D warnings`
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let some_unicode = Regex::new("[é-è]");
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//~^ ERROR: regex syntax error: invalid character class range, the start must be <= th
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let some_regex = Regex::new(OPENING_PAREN);
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let binary_pipe_in_wrong_position = BRegex::new("|");
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//~^ ERROR: trivial regex
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let some_binary_regex = BRegex::new(OPENING_PAREN);
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let some_binary_regex_builder = BRegexBuilder::new(OPENING_PAREN);
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let closing_paren = ")";
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let not_linted = Regex::new(closing_paren);
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let set = RegexSet::new(&[r"[a-z]+@[a-z]+\.(com|org|net)", r"[a-z]+\.(com|org|net)"]);
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let bset = BRegexSet::new(&[
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r"[a-z]+@[a-z]+\.(com|org|net)",
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r"[a-z]+\.(com|org|net)",
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r".", // regression test
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]);
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let set_error = RegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]);
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let bset_error = BRegexSet::new(&[OPENING_PAREN, r"[a-z]+\.(com|org|net)"]);
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// These following three cases are considering valid since regex-1.8.0
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let raw_string_error = Regex::new(r"[...\/...]");
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let raw_string_error = Regex::new(r#"[...\/...]"#);
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let _ = Regex::new(r"(?<hi>hi)").unwrap();
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let escaped_string_span = Regex::new("\\b\\c");
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let aux_span = Regex::new("(?ixi)");
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//~^ ERROR: regex syntax error: duplicate flag
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let should_not_lint = Regex::new("(?u).");
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let should_not_lint = BRegex::new("(?u).");
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let invalid_utf8_should_not_lint = BRegex::new("(?-u).");
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let invalid_utf8_should_lint = Regex::new("(?-u).");
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//~^ ERROR: regex syntax error: pattern can match invalid UTF-8
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}
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fn trivial_regex() {
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let trivial_eq = Regex::new("^foobar$");
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//~^ ERROR: trivial regex
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let trivial_eq_builder = RegexBuilder::new("^foobar$");
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//~^ ERROR: trivial regex
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let trivial_starts_with = Regex::new("^foobar");
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//~^ ERROR: trivial regex
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let trivial_ends_with = Regex::new("foobar$");
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//~^ ERROR: trivial regex
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let trivial_contains = Regex::new("foobar");
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//~^ ERROR: trivial regex
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let trivial_contains = Regex::new(NOT_A_REAL_REGEX);
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//~^ ERROR: trivial regex
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let trivial_backslash = Regex::new("a\\.b");
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//~^ ERROR: trivial regex
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// unlikely corner cases
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let trivial_empty = Regex::new("");
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//~^ ERROR: trivial regex
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let trivial_empty = Regex::new("^");
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//~^ ERROR: trivial regex
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let trivial_empty = Regex::new("^$");
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//~^ ERROR: trivial regex
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let binary_trivial_empty = BRegex::new("^$");
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//~^ ERROR: trivial regex
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// non-trivial regexes
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let non_trivial_dot = Regex::new("a.b");
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let non_trivial_dot_builder = RegexBuilder::new("a.b");
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let non_trivial_dot = Regex::new(".");
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let non_trivial_dot = BRegex::new(".");
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let non_trivial_eq = Regex::new("^foo|bar$");
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let non_trivial_starts_with = Regex::new("^foo|bar");
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let non_trivial_ends_with = Regex::new("^foo|bar");
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let non_trivial_ends_with = Regex::new("foo|bar");
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let non_trivial_binary = BRegex::new("foo|bar");
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let non_trivial_binary_builder = BRegexBuilder::new("foo|bar");
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// #6005: unicode classes in bytes::Regex
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let a_byte_of_unicode = BRegex::new(r"\p{C}");
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// start and end word boundry, introduced in regex 0.10
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let _ = BRegex::new(r"\<word\>");
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let _ = BRegex::new(r"\b{start}word\b{end}");
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}
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fn main() {
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syntax_error();
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trivial_regex();
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}
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