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-rw-r--r--crates/ra_assists/src/assists/raw_string.rs56
1 files changed, 44 insertions, 12 deletions
diff --git a/crates/ra_assists/src/assists/raw_string.rs b/crates/ra_assists/src/assists/raw_string.rs
index dd8db0b7d..b182687a4 100644
--- a/crates/ra_assists/src/assists/raw_string.rs
+++ b/crates/ra_assists/src/assists/raw_string.rs
@@ -28,17 +28,7 @@ pub(crate) fn make_raw_string(mut ctx: AssistCtx<impl HirDatabase>) -> Option<As
28 if error.is_err() { 28 if error.is_err() {
29 eprintln!("Error unescaping string"); 29 eprintln!("Error unescaping string");
30 } else { 30 } else {
31 let mut max_hash_streak = 0; 31 let max_hash_streak = count_hashes(&unescaped);
32 unescaped.chars().fold(0, |acc, c| {
33 if c == '#' {
34 acc + 1
35 } else {
36 if acc > max_hash_streak {
37 max_hash_streak = acc;
38 }
39 0
40 }
41 });
42 let mut hashes = String::with_capacity(max_hash_streak + 1); 32 let mut hashes = String::with_capacity(max_hash_streak + 1);
43 for _ in 0..hashes.capacity() { 33 for _ in 0..hashes.capacity() {
44 hashes.push('#'); 34 hashes.push('#');
@@ -52,6 +42,19 @@ pub(crate) fn make_raw_string(mut ctx: AssistCtx<impl HirDatabase>) -> Option<As
52 ctx.build() 42 ctx.build()
53} 43}
54 44
45fn count_hashes(s: &str) -> usize {
46 let indexes: Vec<_> = s.match_indices("\"#").map(|(i, _)| i).collect();
47 let mut max_hash_streak = 0usize;
48 for idx in indexes {
49 let (_, sub) = s.split_at(idx + 1);
50 let nb_hash = sub.chars().take_while(|c| *c == '#').count();
51 if nb_hash > max_hash_streak {
52 max_hash_streak = nb_hash;
53 }
54 }
55 max_hash_streak
56}
57
55fn find_usual_string_range(s: &str) -> Option<TextRange> { 58fn find_usual_string_range(s: &str) -> Option<TextRange> {
56 Some(TextRange::from_to( 59 Some(TextRange::from_to(
57 TextUnit::from(s.find('"')? as u32), 60 TextUnit::from(s.find('"')? as u32),
@@ -165,12 +168,31 @@ string"#;
165 "###, 168 "###,
166 r####" 169 r####"
167 fn f() { 170 fn f() {
168 let s = <|>r###"#random## 171 let s = <|>r#"#random##
172string"#;
173 }
174 "####,
175 )
176 }
177
178 #[test]
179 fn make_raw_string_closing_hashes_inside_works() {
180 check_assist(
181 make_raw_string,
182 r###"
183 fn f() {
184 let s = <|>"#random\"##\nstring";
185 }
186 "###,
187 r####"
188 fn f() {
189 let s = <|>r###"#random"##
169string"###; 190string"###;
170 } 191 }
171 "####, 192 "####,
172 ) 193 )
173 } 194 }
195
174 #[test] 196 #[test]
175 fn make_raw_string_nothing_to_unescape_works() { 197 fn make_raw_string_nothing_to_unescape_works() {
176 check_assist( 198 check_assist(
@@ -410,4 +432,14 @@ string"###;
410 "#, 432 "#,
411 ); 433 );
412 } 434 }
435
436 #[test]
437 fn count_hashes_test() {
438 assert_eq!(0, count_hashes("abc"));
439 assert_eq!(0, count_hashes("###"));
440 assert_eq!(1, count_hashes("\"#abc"));
441 assert_eq!(0, count_hashes("#abc"));
442 assert_eq!(2, count_hashes("#ab\"##c"));
443 assert_eq!(4, count_hashes("#ab\"##\"####c"));
444 }
413} 445}