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Respect buffer row boundaries in line-oriented edit operations

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Co-Authored-By: Antonio Scandurra <me@as-cii.com>
This commit is contained in:
Nathan Sobo 2021-07-29 09:18:23 -06:00 committed by Max Brunsfeld
parent 84fc8f0f4f
commit 029460bf7e
2 changed files with 24 additions and 33 deletions
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47
zed/src/editor.rs
View File

@ -855,7 +855,7 @@ impl Editor {
let mut selections = self.selections(app).iter().peekable();
while let Some(selection) = selections.next() {
let (mut rows, _) = selection.buffer_rows_for_display_rows(false, &display_map);
let (mut rows, _) = selection.spanned_rows(false, &display_map);
let goal_display_column = selection
.head()
.to_display_point(&display_map, Bias::Left)
@ -863,8 +863,7 @@ impl Editor {
// Accumulate contiguous regions of rows that we want to delete.
while let Some(next_selection) = selections.peek() {
let (next_rows, _) =
next_selection.buffer_rows_for_display_rows(false, &display_map);
let (next_rows, _) = next_selection.spanned_rows(false, &display_map);
if next_rows.start <= rows.end {
rows.end = next_rows.end;
selections.next().unwrap();
@ -943,10 +942,9 @@ impl Editor {
let mut selections_iter = selections.iter_mut().peekable();
while let Some(selection) = selections_iter.next() {
// Avoid duplicating the same lines twice.
let (mut rows, _) = selection.buffer_rows_for_display_rows(false, &display_map);
let (mut rows, _) = selection.spanned_rows(false, &display_map);
while let Some(next_selection) = selections_iter.peek() {
let (next_rows, _) =
next_selection.buffer_rows_for_display_rows(false, &display_map);
let (next_rows, _) = next_selection.spanned_rows(false, &display_map);
if next_rows.start <= rows.end - 1 {
rows.end = next_rows.end;
selections_iter.next().unwrap();
@ -999,11 +997,10 @@ impl Editor {
while let Some(selection) = selections.next() {
// Accumulate contiguous regions of rows that we want to move.
contiguous_selections.push(selection.point_range(buffer));
let (mut buffer_rows, mut display_rows) =
selection.buffer_rows_for_display_rows(false, &display_map);
let (mut buffer_rows, mut display_rows) = selection.spanned_rows(false, &display_map);
while let Some(next_selection) = selections.peek() {
let (next_buffer_rows, next_display_rows) =
next_selection.buffer_rows_for_display_rows(false, &display_map);
next_selection.spanned_rows(false, &display_map);
if next_buffer_rows.start <= buffer_rows.end {
buffer_rows.end = next_buffer_rows.end;
display_rows.end = next_display_rows.end;
@ -1021,19 +1018,19 @@ impl Editor {
.to_offset(buffer);
let prev_row_display_start = DisplayPoint::new(display_rows.start - 1, 0);
let prev_row_start =
prev_row_display_start.to_buffer_offset(&display_map, Bias::Left);
let prev_row_buffer_start = display_map.prev_row_boundary(prev_row_display_start).1;
let prev_row_buffer_start_offset = prev_row_buffer_start.to_offset(buffer);
let mut text = String::new();
text.extend(buffer.text_for_range(start..end));
text.push('\n');
edits.push((prev_row_start..prev_row_start, text));
edits.push((
prev_row_buffer_start_offset..prev_row_buffer_start_offset,
text,
));
edits.push((start - 1..end, String::new()));
let row_delta = buffer_rows.start
- prev_row_display_start
.to_buffer_point(&display_map, Bias::Left)
.row;
let row_delta = buffer_rows.start - prev_row_buffer_start.row;
// Move selections up.
for range in &mut contiguous_selections {
@ -1084,11 +1081,10 @@ impl Editor {
while let Some(selection) = selections.next() {
// Accumulate contiguous regions of rows that we want to move.
contiguous_selections.push(selection.point_range(buffer));
let (mut buffer_rows, mut display_rows) =
selection.buffer_rows_for_display_rows(false, &display_map);
let (mut buffer_rows, mut display_rows) = selection.spanned_rows(false, &display_map);
while let Some(next_selection) = selections.peek() {
let (next_buffer_rows, next_display_rows) =
next_selection.buffer_rows_for_display_rows(false, &display_map);
next_selection.spanned_rows(false, &display_map);
if next_buffer_rows.start <= buffer_rows.end {
buffer_rows.end = next_buffer_rows.end;
display_rows.end = next_display_rows.end;
@ -1107,19 +1103,16 @@ impl Editor {
let next_row_display_end =
DisplayPoint::new(display_rows.end, display_map.line_len(display_rows.end));
let next_row_end = next_row_display_end.to_buffer_offset(&display_map, Bias::Right);
let next_row_buffer_end = display_map.next_row_boundary(next_row_display_end).1;
let next_row_buffer_end_offset = next_row_buffer_end.to_offset(buffer);
let mut text = String::new();
text.push('\n');
text.extend(buffer.text_for_range(start..end));
edits.push((start..end + 1, String::new()));
edits.push((next_row_end..next_row_end, text));
edits.push((next_row_buffer_end_offset..next_row_buffer_end_offset, text));
let row_delta = next_row_display_end
.to_buffer_point(&display_map, Bias::Right)
.row
- buffer_rows.end
+ 1;
let row_delta = next_row_buffer_end.row - buffer_rows.end + 1;
// Move selections down.
for range in &mut contiguous_selections {
@ -1675,7 +1668,7 @@ impl Editor {
let mut selections = self.selections(cx).to_vec();
let max_point = buffer.max_point();
for selection in &mut selections {
let (rows, _) = selection.buffer_rows_for_display_rows(true, &display_map);
let (rows, _) = selection.spanned_rows(true, &display_map);
selection.start = buffer.anchor_before(Point::new(rows.start, 0));
selection.end = buffer.anchor_before(cmp::min(max_point, Point::new(rows.end, 0)));
selection.reversed = false;

10
zed/src/editor/buffer/selection.rs
View File

@ -89,15 +89,12 @@ impl Selection {
}
}
pub fn buffer_rows_for_display_rows(
pub fn spanned_rows(
&self,
include_end_if_at_line_start: bool,
map: &DisplayMapSnapshot,
) -> (Range<u32>, Range<u32>) {
let display_start = self.start.to_display_point(map, Bias::Left);
let buffer_start =
DisplayPoint::new(display_start.row(), 0).to_buffer_point(map, Bias::Left);
let mut display_end = self.end.to_display_point(map, Bias::Right);
if !include_end_if_at_line_start
&& display_end.row() != map.max_point().row()
@ -106,8 +103,9 @@ impl Selection {
{
*display_end.row_mut() -= 1;
}
let buffer_end = DisplayPoint::new(display_end.row(), map.line_len(display_end.row()))
.to_buffer_point(map, Bias::Left);
let (display_start, buffer_start) = map.prev_row_boundary(display_start);
let (display_end, buffer_end) = map.next_row_boundary(display_end);
(
buffer_start.row..buffer_end.row + 1,