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https://github.com/rust-lang/rust-clippy
synced 2024-11-11 07:34:18 +00:00
fix some false negatives for single_char_pattern
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nixx quality
parent
907f6d9294
commit
e3c60444ce
4 changed files with 80 additions and 35 deletions
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@ -9,18 +9,21 @@ use rustc_span::symbol::Symbol;
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use super::SINGLE_CHAR_PATTERN;
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const PATTERN_METHODS: [(&str, usize); 19] = [
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const PATTERN_METHODS: [(&str, usize); 24] = [
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("contains", 1),
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("starts_with", 1),
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("ends_with", 1),
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("find", 1),
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("rfind", 1),
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("split", 1),
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("split_inclusive", 1),
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("rsplit", 1),
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("split_terminator", 1),
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("rsplit_terminator", 1),
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("splitn", 2),
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("rsplitn", 2),
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("split_once", 1),
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("rsplit_once", 1),
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("matches", 1),
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("rmatches", 1),
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("match_indices", 1),
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@ -29,6 +32,8 @@ const PATTERN_METHODS: [(&str, usize); 19] = [
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("strip_suffix", 1),
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("trim_start_matches", 1),
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("trim_end_matches", 1),
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("replace", 1),
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("replacen", 1),
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];
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/// lint for length-1 `str`s for methods in `PATTERN_METHODS`
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@ -17,6 +17,7 @@ fn main() {
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x.split('💣');
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// Can't use this lint for unicode code points which don't fit in a char
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x.split("❤️");
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x.split_inclusive('x');
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x.contains('x');
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x.starts_with('x');
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x.ends_with('x');
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@ -27,6 +28,8 @@ fn main() {
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x.rsplit_terminator('x');
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x.splitn(2, 'x');
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x.rsplitn(2, 'x');
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x.split_once('x');
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x.rsplit_once('x');
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x.matches('x');
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x.rmatches('x');
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x.match_indices('x');
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@ -35,6 +38,8 @@ fn main() {
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x.trim_end_matches('x');
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x.strip_prefix('x');
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x.strip_suffix('x');
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x.replace('x', "y");
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x.replacen('x', "y", 3);
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// Make sure we escape characters correctly.
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x.split('\n');
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x.split('\'');
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@ -43,7 +48,7 @@ fn main() {
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let h = HashSet::<String>::new();
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h.contains("X"); // should not warn
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x.replace(";", ",").split(','); // issue #2978
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x.replace(';', ",").split(','); // issue #2978
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x.starts_with('\x03'); // issue #2996
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// Issue #3204
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@ -17,6 +17,7 @@ fn main() {
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x.split("💣");
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// Can't use this lint for unicode code points which don't fit in a char
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x.split("❤️");
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x.split_inclusive("x");
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x.contains("x");
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x.starts_with("x");
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x.ends_with("x");
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@ -27,6 +28,8 @@ fn main() {
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x.rsplit_terminator("x");
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x.splitn(2, "x");
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x.rsplitn(2, "x");
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x.split_once("x");
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x.rsplit_once("x");
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x.matches("x");
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x.rmatches("x");
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x.match_indices("x");
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@ -35,6 +38,8 @@ fn main() {
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x.trim_end_matches("x");
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x.strip_prefix("x");
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x.strip_suffix("x");
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x.replace("x", "y");
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x.replacen("x", "y", 3);
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// Make sure we escape characters correctly.
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x.split("\n");
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x.split("'");
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@ -43,7 +48,7 @@ fn main() {
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let h = HashSet::<String>::new();
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h.contains("X"); // should not warn
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x.replace(";", ",").split(","); // issue #2978
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x.replace(';', ",").split(","); // issue #2978
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x.starts_with("\x03"); // issue #2996
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// Issue #3204
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@ -25,184 +25,214 @@ LL | x.split("💣");
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| ^^^^ help: try using a `char` instead: `'💣'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:20:16
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--> $DIR/single_char_pattern.rs:20:23
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LL | x.split_inclusive("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:21:16
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LL | x.contains("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:21:19
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--> $DIR/single_char_pattern.rs:22:19
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LL | x.starts_with("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:22:17
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--> $DIR/single_char_pattern.rs:23:17
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LL | x.ends_with("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:23:12
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--> $DIR/single_char_pattern.rs:24:12
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LL | x.find("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:24:13
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--> $DIR/single_char_pattern.rs:25:13
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LL | x.rfind("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:25:14
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--> $DIR/single_char_pattern.rs:26:14
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LL | x.rsplit("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:26:24
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--> $DIR/single_char_pattern.rs:27:24
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LL | x.split_terminator("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:27:25
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--> $DIR/single_char_pattern.rs:28:25
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LL | x.rsplit_terminator("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:28:17
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--> $DIR/single_char_pattern.rs:29:17
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LL | x.splitn(2, "x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:29:18
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--> $DIR/single_char_pattern.rs:30:18
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LL | x.rsplitn(2, "x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:30:15
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--> $DIR/single_char_pattern.rs:31:18
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LL | x.split_once("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:32:19
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LL | x.rsplit_once("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:33:15
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LL | x.matches("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:31:16
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--> $DIR/single_char_pattern.rs:34:16
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LL | x.rmatches("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:32:21
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--> $DIR/single_char_pattern.rs:35:21
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LL | x.match_indices("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:33:22
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--> $DIR/single_char_pattern.rs:36:22
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LL | x.rmatch_indices("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:34:26
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--> $DIR/single_char_pattern.rs:37:26
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LL | x.trim_start_matches("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:35:24
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--> $DIR/single_char_pattern.rs:38:24
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LL | x.trim_end_matches("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:36:20
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--> $DIR/single_char_pattern.rs:39:20
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LL | x.strip_prefix("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:37:20
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--> $DIR/single_char_pattern.rs:40:20
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LL | x.strip_suffix("x");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:39:13
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--> $DIR/single_char_pattern.rs:41:15
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LL | x.replace("x", "y");
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:42:16
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LL | x.replacen("x", "y", 3);
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| ^^^ help: try using a `char` instead: `'x'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:44:13
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LL | x.split("/n");
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| ^^^^ help: try using a `char` instead: `'/n'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:40:13
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--> $DIR/single_char_pattern.rs:45:13
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LL | x.split("'");
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| ^^^ help: try using a `char` instead: `'/''`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:41:13
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--> $DIR/single_char_pattern.rs:46:13
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LL | x.split("/'");
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| ^^^^ help: try using a `char` instead: `'/''`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:46:31
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--> $DIR/single_char_pattern.rs:51:31
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LL | x.replace(";", ",").split(","); // issue #2978
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LL | x.replace(';', ",").split(","); // issue #2978
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| ^^^ help: try using a `char` instead: `','`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:47:19
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--> $DIR/single_char_pattern.rs:52:19
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LL | x.starts_with("/x03"); // issue #2996
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| ^^^^^^ help: try using a `char` instead: `'/x03'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:54:13
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--> $DIR/single_char_pattern.rs:59:13
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LL | x.split(r"a");
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| ^^^^ help: try using a `char` instead: `'a'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:55:13
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--> $DIR/single_char_pattern.rs:60:13
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LL | x.split(r#"a"#);
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| ^^^^^^ help: try using a `char` instead: `'a'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:56:13
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--> $DIR/single_char_pattern.rs:61:13
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LL | x.split(r###"a"###);
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| ^^^^^^^^^^ help: try using a `char` instead: `'a'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:57:13
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--> $DIR/single_char_pattern.rs:62:13
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LL | x.split(r###"'"###);
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| ^^^^^^^^^^ help: try using a `char` instead: `'/''`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:58:13
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--> $DIR/single_char_pattern.rs:63:13
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LL | x.split(r###"#"###);
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| ^^^^^^^^^^ help: try using a `char` instead: `'#'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:60:13
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--> $DIR/single_char_pattern.rs:65:13
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LL | x.split(r#"/"#);
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| ^^^^^^ help: try using a `char` instead: `'/'`
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error: single-character string constant used as pattern
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--> $DIR/single_char_pattern.rs:61:13
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--> $DIR/single_char_pattern.rs:66:13
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LL | x.split(r"/");
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| ^^^^ help: try using a `char` instead: `'/'`
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error: aborting due to 34 previous errors
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error: aborting due to 39 previous errors
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