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Z 2819 (#2872)

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This PR adds new config option to language config called
`word_boundaries` that controls which characters should be recognised as
word boundary for a given language. This will improve our UX for
languages such as PHP and Tailwind.

Release Notes:

- Improved completions for PHP
[#1820](https://github.com/zed-industries/community/issues/1820)

---------

Co-authored-by: Julia Risley <julia@zed.dev>
This commit is contained in:
Piotr Osiewicz 2023-08-22 10:35:20 +02:00 • committed by GitHub
parent a836f9c23d
commit d27cebd977
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 120 additions and 59 deletions
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30
crates/editor/src/movement.rs
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@ -176,14 +176,21 @@ pub fn line_end(
}
pub fn previous_word_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
let raw_point = point.to_point(map);
let language = map.buffer_snapshot.language_at(raw_point);
find_preceding_boundary(map, point, |left, right| {
(char_kind(left) != char_kind(right) && !right.is_whitespace()) || left == '\n'
(char_kind(language, left) != char_kind(language, right) && !right.is_whitespace())
|| left == '\n'
})
}
pub fn previous_subword_start(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
let raw_point = point.to_point(map);
let language = map.buffer_snapshot.language_at(raw_point);
find_preceding_boundary(map, point, |left, right| {
let is_word_start = char_kind(left) != char_kind(right) && !right.is_whitespace();
let is_word_start =
char_kind(language, left) != char_kind(language, right) && !right.is_whitespace();
let is_subword_start =
left == '_' && right != '_' || left.is_lowercase() && right.is_uppercase();
is_word_start || is_subword_start || left == '\n'
@ -191,14 +198,20 @@ pub fn previous_subword_start(map: &DisplaySnapshot, point: DisplayPoint) -> Dis
}
pub fn next_word_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
let raw_point = point.to_point(map);
let language = map.buffer_snapshot.language_at(raw_point);
find_boundary(map, point, |left, right| {
(char_kind(left) != char_kind(right) && !left.is_whitespace()) || right == '\n'
(char_kind(language, left) != char_kind(language, right) && !left.is_whitespace())
|| right == '\n'
})
}
pub fn next_subword_end(map: &DisplaySnapshot, point: DisplayPoint) -> DisplayPoint {
let raw_point = point.to_point(map);
let language = map.buffer_snapshot.language_at(raw_point);
find_boundary(map, point, |left, right| {
let is_word_end = (char_kind(left) != char_kind(right)) && !left.is_whitespace();
let is_word_end =
(char_kind(language, left) != char_kind(language, right)) && !left.is_whitespace();
let is_subword_end =
left != '_' && right == '_' || left.is_lowercase() && right.is_uppercase();
is_word_end || is_subword_end || right == '\n'
@ -385,10 +398,15 @@ pub fn find_boundary_in_line(
}
pub fn is_inside_word(map: &DisplaySnapshot, point: DisplayPoint) -> bool {
let raw_point = point.to_point(map);
let language = map.buffer_snapshot.language_at(raw_point);
let ix = map.clip_point(point, Bias::Left).to_offset(map, Bias::Left);
let text = &map.buffer_snapshot;
let next_char_kind = text.chars_at(ix).next().map(char_kind);
let prev_char_kind = text.reversed_chars_at(ix).next().map(char_kind);
let next_char_kind = text.chars_at(ix).next().map(|c| char_kind(language, c));
let prev_char_kind = text
.reversed_chars_at(ix)
.next()
.map(|c| char_kind(language, c));
prev_char_kind.zip(next_char_kind) == Some((CharKind::Word, CharKind::Word))
}