hl-valdemar/vamp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Releases Wiki Activity

refactor: deepen conflict History alignment ownership

Browse Source
This commit is contained in:
Valdemar Lorenzen
2026-10-16 17:07:28 +02:00
parent 53c37e6209
commit a1fdc1e1b0
5 changed files with 250 additions and 153 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/diff.rs
+113
View File
@@ -240,6 +240,119 @@ pub enum DisplayRow {
Fold { start: usize, end: usize },
}
/// Immutable left/base/right conflict History, aligned at shared base rows.
pub(crate) struct HistoryComparison {
columns: [DiffState; 3],
}
/// A read-only projection for the existing diff painter.
pub(crate) struct HistoryColumn<'a> {
pub diff: &'a DiffState,
pub file: &'a ChangedFile,
pub focus: Focus,
pub lines: &'a [String],
}
impl HistoryColumn<'_> {
pub fn source_row(&self, display: usize) -> Option<usize> {
self.diff.display_source_row(self.focus, display)
}
pub fn display_row(&self, source: usize) -> Option<usize> {
self.diff.source_display_row(self.focus, source)
}
}
impl HistoryComparison {
pub fn new(sources: [&str; 3]) -> Self {
let [left, base, right] =
sources.map(|text| text.split('\n').map(str::to_owned).collect::<Vec<_>>());
let mut columns: [DiffState; 3] = std::array::from_fn(|_| DiffState::new());
columns[0].set_resolver_text(&base, &left);
columns[1].set_resolver_text(&base, &base);
columns[2].set_resolver_text(&base, &right);
let mut left = std::mem::take(&mut columns[0].rows).into_iter().peekable();
let mut right = std::mem::take(&mut columns[2].rows).into_iter().peekable();
columns[1].rows.clear();
// Stitch the existing pairwise alignments at their shared base rows.
while left.peek().is_some() || right.peek().is_some() {
let insertion = left.peek().is_some_and(|row| row.before.is_none())
|| right.peek().is_some_and(|row| row.before.is_none());
let take_left = left
.peek()
.is_some_and(|row| !insertion || row.before.is_none());
let take_right = right
.peek()
.is_some_and(|row| !insertion || row.before.is_none());
let empty = || AlignedRow {
before: None,
after: None,
kind: RowKind::Equal,
changes: Vec::new(),
};
let left_row = if take_left {
left.next().unwrap()
} else {
empty()
};
let right_row = if take_right {
right.next().unwrap()
} else {
empty()
};
let base = left_row.before.or(right_row.before);
let changed = left_row.kind != RowKind::Equal || right_row.kind != RowKind::Equal;
let changes = left_row
.changes
.iter()
.chain(&right_row.changes)
.map(|change| [change[0].clone(), change[0].clone()])
.collect();
columns[1].rows.push(AlignedRow {
before: base,
after: base,
kind: if changed {
RowKind::Changed
} else {
RowKind::Equal
},
changes,
});
columns[0].rows.push(left_row);
columns[2].rows.push(right_row);
}
for column in &mut columns {
column.display_rows = (0..column.rows.len()).map(DisplayRow::Line).collect();
}
Self { columns }
}
pub fn row_count(&self) -> usize {
self.columns[0].rows.len()
}
pub fn column(&self, index: usize) -> HistoryColumn<'_> {
let diff = &self.columns[index];
let file = &diff.comparison.as_ref().unwrap().files[0];
let focus = if index == 1 {
Focus::Before
} else {
Focus::After
};
let lines = if focus == Focus::Before {
&file.before
} else {
&file.after
};
HistoryColumn {
diff,
file,
focus,
lines,
}
}
}
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
enum RequestKind {
Catalog,
src/tui.rs
+71 -153
View File
@@ -41,8 +41,8 @@ use unicode_width::UnicodeWidthStr;
use crate::{
chrome::{ChromeLine, PopupAnchor, SegmentConfig},
diff::{
AlignedRow, ChangedFile, DiffState, DisplayRow, FileStatus, Focus, PaneLayout, Phase,
RowKind, ViewMode,
ChangedFile, DiffState, DisplayRow, FileStatus, Focus, HistoryComparison, PaneLayout,
Phase, RowKind, ViewMode,
},
editor::{
Completion, Cursor, Editor, Hover, Input, Mode, Palette, ResolverLayout, ResolverStatus,
@@ -352,7 +352,7 @@ fn history_key(resolver: &ResolverWorkspace) -> Option<HistoryKey> {
}
struct HistoryDiff {
columns: [DiffState; 3],
comparison: HistoryComparison,
top: DiffWrapPosition,
left: [usize; 3],
widths: [usize; 3],
@@ -369,70 +369,14 @@ impl HistoryDiff {
index
.and_then(|index| file.sources.get(index))
.map_or("", |source| source.text.as_str())
.split('\n')
.map(str::to_owned)
.collect::<Vec<_>>()
};
let base = text(resolver.selected_base);
let mut columns: [DiffState; 3] = std::array::from_fn(|_| DiffState::new());
columns[0].set_resolver_text(&base, &text(Some(resolver.history_sources[0])));
columns[1].set_resolver_text(&base, &base);
columns[2].set_resolver_text(&base, &text(Some(resolver.history_sources[1])));
let mut left = std::mem::take(&mut columns[0].rows).into_iter().peekable();
let mut right = std::mem::take(&mut columns[2].rows).into_iter().peekable();
columns[1].rows.clear();
// Stitch the existing pairwise alignments at their shared base rows.
while left.peek().is_some() || right.peek().is_some() {
let insertion = left.peek().is_some_and(|row| row.before.is_none())
|| right.peek().is_some_and(|row| row.before.is_none());
let take_left = left
.peek()
.is_some_and(|row| !insertion || row.before.is_none());
let take_right = right
.peek()
.is_some_and(|row| !insertion || row.before.is_none());
let empty = || AlignedRow {
before: None,
after: None,
kind: RowKind::Equal,
changes: Vec::new(),
};
let left_row = if take_left {
left.next().unwrap()
} else {
empty()
};
let right_row = if take_right {
right.next().unwrap()
} else {
empty()
};
let base = left_row.before.or(right_row.before);
let changed = left_row.kind != RowKind::Equal || right_row.kind != RowKind::Equal;
let changes = left_row
.changes
.iter()
.chain(&right_row.changes)
.map(|change| [change[0].clone(), change[0].clone()])
.collect();
columns[1].rows.push(AlignedRow {
before: base,
after: base,
kind: if changed {
RowKind::Changed
} else {
RowKind::Equal
},
changes,
});
columns[0].rows.push(left_row);
columns[2].rows.push(right_row);
}
for column in &mut columns {
column.display_rows = (0..column.rows.len()).map(DisplayRow::Line).collect();
}
let comparison = HistoryComparison::new([
text(Some(resolver.history_sources[0])),
text(resolver.selected_base),
text(Some(resolver.history_sources[1])),
]);
Self {
columns,
comparison,
top: DiffWrapPosition::default(),
left: [0; 3],
widths: [0; 3],
@@ -443,28 +387,14 @@ impl HistoryDiff {
}
}
fn focus(column: usize) -> Focus {
if column == 1 {
Focus::Before
} else {
Focus::After
}
}
fn row_height(&mut self, row: usize) -> usize {
let mut height = 1;
for column in 0..3 {
if self.wrapping[column]
&& self.widths[column] > 0
&& let Some(source) =
self.columns[column].display_source_row(Self::focus(column), row)
&& let Some(source) = self.comparison.column(column).source_row(row)
{
let file = &self.columns[column].comparison.as_ref().unwrap().files[0];
let lines = if column == 1 {
&file.before
} else {
&file.after
};
let lines = self.comparison.column(column).lines;
height = height.max(
self.wrap[column]
.segments(source, lines.get(source).map_or("", String::as_str))
@@ -479,7 +409,7 @@ impl HistoryDiff {
if down {
if self.top.continuation + 1 < self.row_height(self.top.display) {
self.top.continuation += 1;
} else if self.top.display + 1 < self.columns[0].rows.len() {
} else if self.top.display + 1 < self.comparison.row_count() {
self.top.display += 1;
self.top.continuation = 0;
}
@@ -500,17 +430,10 @@ impl HistoryDiff {
for column in 0..3 {
let mut segments = [None; 2];
let mut final_segments = [false; 2];
let side = usize::from(column != 1);
if let Some(source) =
self.columns[column].display_source_row(Self::focus(column), self.top.display)
{
let file = &self.columns[column].comparison.as_ref().unwrap().files[0];
let lines = if column == 1 {
&file.before
} else {
&file.after
};
let text = lines.get(source).map_or("", String::as_str);
let projection = self.comparison.column(column);
let side = usize::from(projection.focus == Focus::After);
if let Some(source) = projection.source_row(self.top.display) {
let text = projection.lines.get(source).map_or("", String::as_str);
if self.wrapping[column] {
let parts = self.wrap[column].segments(source, text);
segments[side] = parts.get(self.top.continuation).copied();
@@ -951,14 +874,13 @@ impl BufferViewports {
history.widths = [0; 3];
for &(column, pane, content) in panes.iter().flatten() {
editor.with_render_pane(pane, |view| {
let diff = &history.columns[column];
let file = &diff.comparison.as_ref().unwrap().files[0];
let projection = history.comparison.column(column);
let width = usize::from(content.width);
history.widths[column] = width.saturating_sub(diff_gutter(
diff,
file,
projection.diff,
projection.file,
width,
HistoryDiff::focus(column),
projection.focus,
));
history.wrapping[column] = view.word_wrap();
history.wrap[column].prepare((view.buffer_id(), 0), history.widths[column]);
@@ -989,52 +911,48 @@ impl BufferViewports {
);
if !editor.file_picker().is_some_and(|picker| picker.focused)
&& (history.caret != Some(identity) || previous_widths != history.widths)
&& let Some(display) = history.comparison.column(column).display_row(cursor.row)
{
let diff = &history.columns[column];
if let Some(display) =
diff.source_display_row(HistoryDiff::focus(column), cursor.row)
{
let column_offset = display_column(&editor.lines()[cursor.row], cursor.column);
let continuation = if history.wrapping[column] {
caret_segment(
history.wrap[column].segments(cursor.row, &editor.lines()[cursor.row]),
column_offset,
)
} else {
history.left[column] = scroll_offset(
history.left[column],
column_offset,
history.widths[column],
editor.scroll_distance(),
);
0
};
let caret = DiffWrapPosition {
display,
continuation,
};
let screen = history.visible[column]
.iter()
.position(|row| row.position == caret);
let height = usize::from(content.height);
let margin = scroll_margin(height, editor.scroll_distance());
let anchor = if height == 0 {
None
} else if caret < history.top || screen.is_some_and(|row| row < margin) {
Some(margin)
} else if screen.is_none_or(|row| row >= height.saturating_sub(margin)) {
Some(height.saturating_sub(margin + 1))
} else {
None
};
if let Some(anchor) = anchor {
history.top = caret;
for _ in 0..anchor {
history.step(false);
}
let column_offset = display_column(&editor.lines()[cursor.row], cursor.column);
let continuation = if history.wrapping[column] {
caret_segment(
history.wrap[column].segments(cursor.row, &editor.lines()[cursor.row]),
column_offset,
)
} else {
history.left[column] = scroll_offset(
history.left[column],
column_offset,
history.widths[column],
editor.scroll_distance(),
);
0
};
let caret = DiffWrapPosition {
display,
continuation,
};
let screen = history.visible[column]
.iter()
.position(|row| row.position == caret);
let height = usize::from(content.height);
let margin = scroll_margin(height, editor.scroll_distance());
let anchor = if height == 0 {
None
} else if caret < history.top || screen.is_some_and(|row| row < margin) {
Some(margin)
} else if screen.is_none_or(|row| row >= height.saturating_sub(margin)) {
Some(height.saturating_sub(margin + 1))
} else {
None
};
if let Some(anchor) = anchor {
history.top = caret;
for _ in 0..anchor {
history.step(false);
}
history.fill(height);
}
history.fill(height);
}
history.caret = Some(identity);
}
@@ -1051,12 +969,11 @@ impl BufferViewports {
}
for (column, pane, content) in panes.into_iter().flatten() {
editor.with_render_pane(pane, |view| {
let diff = &history.columns[column];
let file = &diff.comparison.as_ref().unwrap().files[0];
let projection = history.comparison.column(column);
let syntax = self.syntax.entry(view.buffer_id()).or_default();
let source_rows = history.visible[column].iter().filter_map(|row| {
diff.display_source_row(HistoryDiff::focus(column), row.position.display)
});
let source_rows = history.visible[column]
.iter()
.filter_map(|row| projection.source_row(row.position.display));
let first = source_rows
.clone()
.min()
@@ -1074,10 +991,10 @@ impl BufferViewports {
);
let text_area = draw_diff_pane(
frame,
diff,
file,
projection.diff,
projection.file,
content,
column == 1,
projection.focus == Focus::Before,
[&*syntax, &*syntax],
[view.semantic_tokens(), view.semantic_tokens()],
(history.top.display, &mut history.left[column], None),
@@ -1095,9 +1012,9 @@ impl BufferViewports {
self.panels.caret = paint_diff_editor(
frame,
view,
diff,
projection.diff,
text_area,
HistoryDiff::focus(column),
projection.focus,
(history.top.display, history.left[column]),
Some(&history.visible[column]),
)
@@ -1194,8 +1111,9 @@ impl BufferViewports {
} else {
history.left[column].saturating_sub(3)
};
history.left[column] = history.columns[column].bound_horizontal(
HistoryDiff::focus(column),
let projection = history.comparison.column(column);
history.left[column] = projection.diff.bound_horizontal(
projection.focus,
left,
history.widths[column],
);