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Merge pull request #929 from zed-industries/non-uniform-batched-edits

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Allow batched edits where each range is associated with different insertion text
This commit is contained in:
Keith Simmons 2022-04-29 16:14:38 -07:00 • committed by GitHub
commit d4bef67cf2
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 539 additions and 487 deletions
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149
crates/language/src/buffer.rs
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@ -880,14 +880,18 @@ impl Buffer {
if column > current_column {
let offset = Point::new(row, 0).to_offset(&*self);
self.edit(
[offset..offset],
" ".repeat((column - current_column) as usize),
[(
offset..offset,
" ".repeat((column - current_column) as usize),
)],
cx,
);
} else if column < current_column {
self.edit(
[Point::new(row, 0)..Point::new(row, current_column - column)],
"",
[(
Point::new(row, 0)..Point::new(row, current_column - column),
"",
)],
cx,
);
}
@ -925,13 +929,15 @@ impl Buffer {
match tag {
ChangeTag::Equal => offset += len,
ChangeTag::Delete => {
self.edit([range], "", cx);
self.edit([(range, "")], cx);
}
ChangeTag::Insert => {
self.edit(
[offset..offset],
&diff.new_text
[range.start - diff.start_offset..range.end - diff.start_offset],
[(
offset..offset,
&diff.new_text[range.start - diff.start_offset
..range.end - diff.start_offset],
)],
cx,
);
offset += len;
@ -1049,71 +1055,68 @@ impl Buffer {
pub fn set_text<T>(&mut self, text: T, cx: &mut ModelContext<Self>) -> Option<clock::Local>
where
T: Into<String>,
T: Into<Arc<str>>,
{
self.edit_internal([0..self.len()], text, None, cx)
self.edit_internal([(0..self.len(), text)], None, cx)
}
pub fn edit<I, S, T>(
&mut self,
ranges_iter: I,
new_text: T,
edits_iter: I,
cx: &mut ModelContext<Self>,
) -> Option<clock::Local>
where
I: IntoIterator<Item = Range<S>>,
I: IntoIterator<Item = (Range<S>, T)>,
S: ToOffset,
T: Into<String>,
T: Into<Arc<str>>,
{
self.edit_internal(ranges_iter, new_text, None, cx)
self.edit_internal(edits_iter, None, cx)
}
pub fn edit_with_autoindent<I, S, T>(
&mut self,
ranges_iter: I,
new_text: T,
edits_iter: I,
indent_size: u32,
cx: &mut ModelContext<Self>,
) -> Option<clock::Local>
where
I: IntoIterator<Item = Range<S>>,
I: IntoIterator<Item = (Range<S>, T)>,
S: ToOffset,
T: Into<String>,
T: Into<Arc<str>>,
{
self.edit_internal(ranges_iter, new_text, Some(indent_size), cx)
self.edit_internal(edits_iter, Some(indent_size), cx)
}
pub fn edit_internal<I, S, T>(
&mut self,
ranges_iter: I,
new_text: T,
edits_iter: I,
autoindent_size: Option<u32>,
cx: &mut ModelContext<Self>,
) -> Option<clock::Local>
where
I: IntoIterator<Item = Range<S>>,
I: IntoIterator<Item = (Range<S>, T)>,
S: ToOffset,
T: Into<String>,
T: Into<Arc<str>>,
{
let new_text = new_text.into();
// Skip invalid ranges and coalesce contiguous ones.
let mut ranges: Vec<Range<usize>> = Vec::new();
for range in ranges_iter {
// Skip invalid edits and coalesce contiguous ones.
let mut edits: Vec<(Range<usize>, Arc<str>)> = Vec::new();
for (range, new_text) in edits_iter {
let range = range.start.to_offset(self)..range.end.to_offset(self);
let new_text = new_text.into();
if !new_text.is_empty() || !range.is_empty() {
if let Some(prev_range) = ranges.last_mut() {
if let Some((prev_range, prev_text)) = edits.last_mut() {
if prev_range.end >= range.start {
prev_range.end = cmp::max(prev_range.end, range.end);
*prev_text = format!("{prev_text}{new_text}").into();
} else {
ranges.push(range);
edits.push((range, new_text));
}
} else {
ranges.push(range);
edits.push((range, new_text));
}
}
}
if ranges.is_empty() {
if edits.is_empty() {
return None;
}
@ -1125,9 +1128,9 @@ impl Buffer {
.and_then(|_| autoindent_size)
.map(|autoindent_size| {
let before_edit = self.snapshot();
let edited = ranges
let edited = edits
.iter()
.filter_map(|range| {
.filter_map(|(range, new_text)| {
let start = range.start.to_point(self);
if new_text.starts_with('\n')
&& start.column == self.line_len(start.row)
@ -1141,30 +1144,29 @@ impl Buffer {
(before_edit, edited, autoindent_size)
});
let first_newline_ix = new_text.find('\n');
let new_text_len = new_text.len();
let edit = self.text.edit(ranges.iter().cloned(), new_text);
let edit_id = edit.local_timestamp();
let edit_operation = self.text.edit(edits.iter().cloned());
let edit_id = edit_operation.local_timestamp();
if let Some((before_edit, edited, size)) = autoindent_request {
let mut inserted = None;
if let Some(first_newline_ix) = first_newline_ix {
let mut delta = 0isize;
inserted = Some(
ranges
.iter()
.map(|range| {
let start =
(delta + range.start as isize) as usize + first_newline_ix + 1;
let end = (delta + range.start as isize) as usize + new_text_len;
delta +=
(range.end as isize - range.start as isize) + new_text_len as isize;
self.anchor_before(start)..self.anchor_after(end)
})
.collect(),
);
}
let mut delta = 0isize;
let inserted_ranges = edits
.into_iter()
.filter_map(|(range, new_text)| {
let first_newline_ix = new_text.find('\n')?;
let new_text_len = new_text.len();
let start = (delta + range.start as isize) as usize + first_newline_ix + 1;
let end = (delta + range.start as isize) as usize + new_text_len;
delta += new_text_len as isize - (range.end as isize - range.start as isize);
Some(self.anchor_before(start)..self.anchor_after(end))
})
.collect::<Vec<Range<Anchor>>>();
let inserted = if inserted_ranges.is_empty() {
None
} else {
Some(inserted_ranges)
};
self.autoindent_requests.push(Arc::new(AutoindentRequest {
before_edit,
@ -1175,7 +1177,7 @@ impl Buffer {
}
self.end_transaction(cx);
self.send_operation(Operation::Buffer(edit), cx);
self.send_operation(Operation::Buffer(edit_operation), cx);
Some(edit_id)
}
@ -1433,25 +1435,26 @@ impl Buffer {
) where
T: rand::Rng,
{
let mut old_ranges: Vec<Range<usize>> = Vec::new();
let mut edits: Vec<(Range<usize>, String)> = Vec::new();
let mut last_end = None;
for _ in 0..old_range_count {
let last_end = old_ranges.last().map_or(0, |last_range| last_range.end + 1);
if last_end > self.len() {
if last_end.map_or(false, |last_end| last_end >= self.len()) {
break;
}
old_ranges.push(self.text.random_byte_range(last_end, rng));
let new_start = last_end.map_or(0, |last_end| last_end + 1);
let range = self.random_byte_range(new_start, rng);
last_end = Some(range.end);
let new_text_len = rng.gen_range(0..10);
let new_text: String = crate::random_char_iter::RandomCharIter::new(&mut *rng)
.take(new_text_len)
.collect();
edits.push((range, new_text));
}
let new_text_len = rng.gen_range(0..10);
let new_text: String = crate::random_char_iter::RandomCharIter::new(&mut *rng)
.take(new_text_len)
.collect();
log::info!(
"mutating buffer {} at {:?}: {:?}",
self.replica_id(),
old_ranges,
new_text
);
self.edit(old_ranges.iter().cloned(), new_text.as_str(), cx);
log::info!("mutating buffer {} with {:?}", self.replica_id(), edits);
self.edit(edits, cx);
}
pub fn randomly_undo_redo(&mut self, rng: &mut impl rand::Rng, cx: &mut ModelContext<Self>) {