From 7c082dcf0f607abf16485b36c2d317091fa2986b Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Fri, 17 Jul 2020 16:36:30 +0200 Subject: More precise ranges in remove hashes assist --- crates/ra_assists/src/handlers/raw_string.rs | 131 +++++++++++---------------- 1 file changed, 52 insertions(+), 79 deletions(-) (limited to 'crates/ra_assists') diff --git a/crates/ra_assists/src/handlers/raw_string.rs b/crates/ra_assists/src/handlers/raw_string.rs index 6d77dff13..ba1dcb610 100644 --- a/crates/ra_assists/src/handlers/raw_string.rs +++ b/crates/ra_assists/src/handlers/raw_string.rs @@ -4,8 +4,9 @@ use ra_syntax::{ ast::{self, HasQuotes, HasStringValue}, AstToken, SyntaxKind::{RAW_STRING, STRING}, - TextSize, + TextRange, TextSize, }; +use test_utils::mark; use crate::{AssistContext, AssistId, AssistKind, Assists}; @@ -33,8 +34,7 @@ pub(crate) fn make_raw_string(acc: &mut Assists, ctx: &AssistContext) -> Option< "Rewrite as raw string", target, |edit| { - let max_hash_streak = count_hashes(&value); - let hashes = "#".repeat(max_hash_streak + 1); + let hashes = "#".repeat(required_hashes(&value).max(1)); if matches!(value, Cow::Borrowed(_)) { // Avoid replacing the whole string to better position the cursor. edit.insert(token.syntax().text_range().start(), format!("r{}", hashes)); @@ -106,7 +106,7 @@ pub(crate) fn make_usual_string(acc: &mut Assists, ctx: &AssistContext) -> Optio pub(crate) fn add_hash(acc: &mut Assists, ctx: &AssistContext) -> Option<()> { let token = ctx.find_token_at_offset(RAW_STRING)?; let target = token.text_range(); - acc.add(AssistId("add_hash", AssistKind::Refactor), "Add # to raw string", target, |edit| { + acc.add(AssistId("add_hash", AssistKind::Refactor), "Add #", target, |edit| { edit.insert(token.text_range().start() + TextSize::of('r'), "#"); edit.insert(token.text_range().end(), "#"); }) @@ -128,49 +128,58 @@ pub(crate) fn add_hash(acc: &mut Assists, ctx: &AssistContext) -> Option<()> { // } // ``` pub(crate) fn remove_hash(acc: &mut Assists, ctx: &AssistContext) -> Option<()> { - let token = ctx.find_token_at_offset(RAW_STRING)?; + let token = ctx.find_token_at_offset(RAW_STRING).and_then(ast::RawString::cast)?; + let text = token.text().as_str(); - if text.starts_with("r\"") { - // no hash to remove + if !text.starts_with("r#") && text.ends_with("#") { return None; } - let target = token.text_range(); - acc.add( - AssistId("remove_hash", AssistKind::RefactorRewrite), - "Remove hash from raw string", - target, - |edit| { - let result = &text[2..text.len() - 1]; - let result = if result.starts_with('\"') { - // FIXME: this logic is wrong, not only the last has has to handled specially - // no more hash, escape - let internal_str = &result[1..result.len() - 1]; - format!("\"{}\"", internal_str.escape_default().to_string()) - } else { - result.to_owned() - }; - edit.replace(token.text_range(), format!("r{}", result)); - }, - ) + + let existing_hashes = text.chars().skip(1).take_while(|&it| it == '#').count(); + + let text_range = token.syntax().text_range(); + let internal_text = &text[token.text_range_between_quotes()? - text_range.start()]; + + if existing_hashes == required_hashes(internal_text) { + mark::hit!(cant_remove_required_hash); + return None; + } + + acc.add(AssistId("remove_hash", AssistKind::RefactorRewrite), "Remove #", text_range, |edit| { + edit.delete(TextRange::at(text_range.start() + TextSize::of('r'), TextSize::of('#'))); + edit.delete(TextRange::new(text_range.end() - TextSize::of('#'), text_range.end())); + }) } -fn count_hashes(s: &str) -> usize { - let mut max_hash_streak = 0usize; - for idx in s.match_indices("\"#").map(|(i, _)| i) { +fn required_hashes(s: &str) -> usize { + let mut res = 0usize; + for idx in s.match_indices('"').map(|(i, _)| i) { let (_, sub) = s.split_at(idx + 1); - let nb_hash = sub.chars().take_while(|c| *c == '#').count(); - if nb_hash > max_hash_streak { - max_hash_streak = nb_hash; - } + let n_hashes = sub.chars().take_while(|c| *c == '#').count(); + res = res.max(n_hashes + 1) } - max_hash_streak + res +} + +#[test] +fn test_required_hashes() { + assert_eq!(0, required_hashes("abc")); + assert_eq!(0, required_hashes("###")); + assert_eq!(1, required_hashes("\"")); + assert_eq!(2, required_hashes("\"#abc")); + assert_eq!(0, required_hashes("#abc")); + assert_eq!(3, required_hashes("#ab\"##c")); + assert_eq!(5, required_hashes("#ab\"##\"####c")); } #[cfg(test)] mod test { - use super::*; + use test_utils::mark; + use crate::tests::{check_assist, check_assist_not_applicable, check_assist_target}; + use super::*; + #[test] fn make_raw_string_target() { check_assist_target( @@ -372,33 +381,21 @@ string"###; fn remove_hash_works() { check_assist( remove_hash, - r##" - fn f() { - let s = <|>r#"random string"#; - } - "##, - r#" - fn f() { - let s = r"random string"; - } - "#, + r##"fn f() { let s = <|>r#"random string"#; }"##, + r#"fn f() { let s = r"random string"; }"#, ) } #[test] - fn remove_hash_with_quote_works() { - check_assist( + fn cant_remove_required_hash() { + mark::check!(cant_remove_required_hash); + check_assist_not_applicable( remove_hash, r##" fn f() { let s = <|>r#"random"str"ing"#; } "##, - r#" - fn f() { - let s = r"random\"str\"ing"; - } - "#, ) } @@ -420,27 +417,13 @@ string"###; } #[test] - fn remove_hash_not_works() { - check_assist_not_applicable( - remove_hash, - r#" - fn f() { - let s = <|>"random string"; - } - "#, - ); + fn remove_hash_doesnt_work() { + check_assist_not_applicable(remove_hash, r#"fn f() { let s = <|>"random string"; }"#); } #[test] - fn remove_hash_no_hash_not_works() { - check_assist_not_applicable( - remove_hash, - r#" - fn f() { - let s = <|>r"random string"; - } - "#, - ); + fn remove_hash_no_hash_doesnt_work() { + check_assist_not_applicable(remove_hash, r#"fn f() { let s = <|>r"random string"; }"#); } #[test] @@ -518,14 +501,4 @@ string"###; "#, ); } - - #[test] - fn count_hashes_test() { - assert_eq!(0, count_hashes("abc")); - assert_eq!(0, count_hashes("###")); - assert_eq!(1, count_hashes("\"#abc")); - assert_eq!(0, count_hashes("#abc")); - assert_eq!(2, count_hashes("#ab\"##c")); - assert_eq!(4, count_hashes("#ab\"##\"####c")); - } } -- cgit v1.2.3