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Fold multiline calls

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This commit is contained in:
Aleksey Kladov 2020-07-01 18:17:08 +02:00
parent 53e3a7aeb4
commit 8295dc42a0
3 changed files with 114 additions and 105 deletions
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27
crates/test_utils/src/lib.rs
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@ -118,8 +118,8 @@ pub fn extract_range_or_offset(text: &str) -> (RangeOrOffset, String) {
}
/// Extracts ranges, marked with `<tag> </tag>` pairs from the `text`
pub fn extract_ranges(mut text: &str, tag: &str) -> (Vec<TextRange>, String) {
let open = format!("<{}>", tag);
pub fn extract_tags(mut text: &str, tag: &str) -> (Vec<(TextRange, Option<String>)>, String) {
let open = format!("<{}", tag);
let close = format!("</{}>", tag);
let mut ranges = Vec::new();
let mut res = String::new();
@ -134,22 +134,35 @@ pub fn extract_ranges(mut text: &str, tag: &str) -> (Vec<TextRange>, String) {
res.push_str(&text[..i]);
text = &text[i..];
if text.starts_with(&open) {
text = &text[open.len()..];
let close_open = text.find('>').unwrap();
let attr = text[open.len()..close_open].trim();
let attr = if attr.is_empty() { None } else { Some(attr.to_string()) };
text = &text[close_open + '>'.len_utf8()..];
let from = TextSize::of(&res);
stack.push(from);
stack.push((from, attr));
} else if text.starts_with(&close) {
text = &text[close.len()..];
let from = stack.pop().unwrap_or_else(|| panic!("unmatched </{}>", tag));
let (from, attr) =
stack.pop().unwrap_or_else(|| panic!("unmatched </{}>", tag));
let to = TextSize::of(&res);
ranges.push(TextRange::new(from, to));
ranges.push((TextRange::new(from, to), attr));
} else {
res.push('<');
text = &text['<'.len_utf8()..];
}
}
}
}
assert!(stack.is_empty(), "unmatched <{}>", tag);
ranges.sort_by_key(|r| (r.start(), r.end()));
ranges.sort_by_key(|r| (r.0.start(), r.0.end()));
(ranges, res)
}
#[test]
fn test_extract_tags() {
let (tags, text) = extract_tags(r#"<tag fn>fn <tag>main</tag>() {}</tag>"#, "tag");
let actual = tags.into_iter().map(|(range, attr)| (&text[range], attr)).collect::<Vec<_>>();
assert_eq!(actual, vec![("fn main() {}", Some("fn".into())), ("main", None),]);
}
/// Inserts `<|>` marker into the `text` at `offset`.
pub fn add_cursor(text: &str, offset: TextSize) -> String {