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feat(assists): Be smart about hashes

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Add max_hashes_streak + 1 hashes to the raw string
This commit is contained in:
Geobert Quach 2019-09-30 19:50:44 +01:00
parent e293c34e85
commit b06c5fac14
1 changed files with 36 additions and 1 deletions
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37
crates/ra_assists/src/assists/raw_string.rs
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@ -28,7 +28,25 @@ pub(crate) fn make_raw_string(mut ctx: AssistCtx<impl HirDatabase>) -> Option<As
if error.is_err() {
eprintln!("Error unescaping string");
} else {
edit.replace(literal.syntax().text_range(), format!("r#\"{}\"#", unescaped));
let mut max_hash_streak = 0;
unescaped.chars().fold(0, |acc, c| {
if c == '#' {
acc + 1
} else {
if acc > max_hash_streak {
max_hash_streak = acc;
}
0
}
});
let mut hashes = String::with_capacity(max_hash_streak + 1);
for _ in 0..hashes.capacity() {
hashes.push('#');
}
edit.replace(
literal.syntax().text_range(),
format!("r{}\"{}\"{}", hashes, unescaped, hashes),
);
}
});
ctx.build()
@ -136,6 +154,23 @@ string"#;
)
}
#[test]
fn make_raw_string_hashes_inside_works() {
check_assist(
make_raw_string,
r###"
fn f() {
let s = <|>"#random##\nstring";
}
"###,
r####"
fn f() {
let s = <|>r###"#random##
string"###;
}
"####,
)
}
#[test]
fn make_raw_string_nothing_to_unescape_works() {
check_assist(