mirror of
https://github.com/zed-industries/zed.git
synced 2024-09-20 02:47:34 +03:00
caa0d35b8b
Part of https://github.com/zed-industries/zed/issues/4523 Added two new actions with the default keybindings ``` "cmd-'": "editor::ToggleHunkDiff", "cmd-\"": "editor::ExpandAllHunkDiffs", ``` that allow to browse git hunk diffs in Zed: https://github.com/zed-industries/zed/assets/2690773/9a8a7d10-ed06-4960-b4ee-fe28fc5c4768 The hunks are dynamic and alter on user folds and modifications, or toggle hidden, if the modifications were not adjacent to the expanded hunk. Release Notes: - Added `editor::ToggleHunkDiff` (`cmd-'`) and `editor::ExpandAllHunkDiffs` (`cmd-"`) actions to browse git hunk diffs in Zed
624 lines
25 KiB
Rust
624 lines
25 KiB
Rust
use std::ops::Range;
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use collections::{hash_map, HashMap, HashSet};
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use git::diff::{DiffHunk, DiffHunkStatus};
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use gpui::{AppContext, Hsla, Model, Task, View};
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use language::Buffer;
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use multi_buffer::{Anchor, ExcerptRange, MultiBuffer, MultiBufferSnapshot, ToPoint};
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use text::{BufferId, Point};
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use ui::{
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div, ActiveTheme, Context as _, IntoElement, ParentElement, Styled, ViewContext, VisualContext,
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};
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use util::{debug_panic, RangeExt};
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use crate::{
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git::{diff_hunk_to_display, DisplayDiffHunk},
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hunks_for_selections, BlockDisposition, BlockId, BlockProperties, BlockStyle, DiffRowHighlight,
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Editor, ExpandAllHunkDiffs, RangeToAnchorExt, ToDisplayPoint, ToggleHunkDiff,
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};
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#[derive(Debug, Clone)]
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pub(super) struct HunkToExpand {
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pub multi_buffer_range: Range<Anchor>,
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pub status: DiffHunkStatus,
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pub diff_base_byte_range: Range<usize>,
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}
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#[derive(Debug, Default)]
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pub(super) struct ExpandedHunks {
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hunks: Vec<ExpandedHunk>,
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diff_base: HashMap<BufferId, DiffBaseBuffer>,
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hunk_update_tasks: HashMap<Option<BufferId>, Task<()>>,
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}
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#[derive(Debug)]
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struct DiffBaseBuffer {
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buffer: Model<Buffer>,
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diff_base_version: usize,
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}
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impl ExpandedHunks {
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pub fn hunks(&self, include_folded: bool) -> impl Iterator<Item = &ExpandedHunk> {
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self.hunks
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.iter()
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.filter(move |hunk| include_folded || !hunk.folded)
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}
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}
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#[derive(Debug, Clone)]
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pub(super) struct ExpandedHunk {
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pub block: Option<BlockId>,
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pub hunk_range: Range<Anchor>,
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pub diff_base_byte_range: Range<usize>,
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pub status: DiffHunkStatus,
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pub folded: bool,
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}
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impl Editor {
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pub fn toggle_hunk_diff(&mut self, _: &ToggleHunkDiff, cx: &mut ViewContext<Self>) {
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let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
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let selections = self.selections.disjoint_anchors();
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self.toggle_hunks_expanded(
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hunks_for_selections(&multi_buffer_snapshot, &selections),
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cx,
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);
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}
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pub fn expand_all_hunk_diffs(&mut self, _: &ExpandAllHunkDiffs, cx: &mut ViewContext<Self>) {
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let snapshot = self.snapshot(cx);
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let display_rows_with_expanded_hunks = self
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.expanded_hunks
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.hunks(false)
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.map(|hunk| &hunk.hunk_range)
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.map(|anchor_range| {
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(
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anchor_range
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.start
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.to_display_point(&snapshot.display_snapshot)
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.row(),
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anchor_range
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.end
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.to_display_point(&snapshot.display_snapshot)
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.row(),
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)
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})
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.collect::<HashMap<_, _>>();
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let hunks = snapshot
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.display_snapshot
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.buffer_snapshot
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.git_diff_hunks_in_range(0..u32::MAX)
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.filter(|hunk| {
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let hunk_display_row_range = Point::new(hunk.associated_range.start, 0)
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.to_display_point(&snapshot.display_snapshot)
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..Point::new(hunk.associated_range.end, 0)
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.to_display_point(&snapshot.display_snapshot);
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let row_range_end =
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display_rows_with_expanded_hunks.get(&hunk_display_row_range.start.row());
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row_range_end.is_none() || row_range_end != Some(&hunk_display_row_range.end.row())
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});
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self.toggle_hunks_expanded(hunks.collect(), cx);
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}
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fn toggle_hunks_expanded(
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&mut self,
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hunks_to_toggle: Vec<DiffHunk<u32>>,
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cx: &mut ViewContext<Self>,
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) {
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let previous_toggle_task = self.expanded_hunks.hunk_update_tasks.remove(&None);
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let new_toggle_task = cx.spawn(move |editor, mut cx| async move {
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if let Some(task) = previous_toggle_task {
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task.await;
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}
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editor
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.update(&mut cx, |editor, cx| {
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let snapshot = editor.snapshot(cx);
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let mut hunks_to_toggle = hunks_to_toggle.into_iter().fuse().peekable();
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let mut highlights_to_remove =
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Vec::with_capacity(editor.expanded_hunks.hunks.len());
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let mut blocks_to_remove = HashSet::default();
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let mut hunks_to_expand = Vec::new();
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editor.expanded_hunks.hunks.retain(|expanded_hunk| {
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if expanded_hunk.folded {
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return true;
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}
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let expanded_hunk_row_range = expanded_hunk
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.hunk_range
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.start
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.to_display_point(&snapshot)
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.row()
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..expanded_hunk
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.hunk_range
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.end
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.to_display_point(&snapshot)
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.row();
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let mut retain = true;
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while let Some(hunk_to_toggle) = hunks_to_toggle.peek() {
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match diff_hunk_to_display(hunk_to_toggle, &snapshot) {
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DisplayDiffHunk::Folded { .. } => {
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hunks_to_toggle.next();
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continue;
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}
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DisplayDiffHunk::Unfolded {
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diff_base_byte_range,
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display_row_range,
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multi_buffer_range,
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status,
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} => {
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let hunk_to_toggle_row_range = display_row_range;
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if hunk_to_toggle_row_range.start > expanded_hunk_row_range.end
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{
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break;
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} else if expanded_hunk_row_range == hunk_to_toggle_row_range {
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highlights_to_remove.push(expanded_hunk.hunk_range.clone());
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blocks_to_remove.extend(expanded_hunk.block);
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hunks_to_toggle.next();
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retain = false;
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break;
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} else {
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hunks_to_expand.push(HunkToExpand {
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status,
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multi_buffer_range,
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diff_base_byte_range,
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});
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hunks_to_toggle.next();
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continue;
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}
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}
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}
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}
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retain
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});
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for remaining_hunk in hunks_to_toggle {
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let remaining_hunk_point_range =
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Point::new(remaining_hunk.associated_range.start, 0)
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..Point::new(remaining_hunk.associated_range.end, 0);
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hunks_to_expand.push(HunkToExpand {
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status: remaining_hunk.status(),
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multi_buffer_range: remaining_hunk_point_range
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.to_anchors(&snapshot.buffer_snapshot),
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diff_base_byte_range: remaining_hunk.diff_base_byte_range.clone(),
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});
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}
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for removed_rows in highlights_to_remove {
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editor.highlight_rows::<DiffRowHighlight>(removed_rows, None, cx);
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}
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editor.remove_blocks(blocks_to_remove, None, cx);
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for hunk in hunks_to_expand {
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editor.expand_diff_hunk(None, &hunk, cx);
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}
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cx.notify();
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})
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.ok();
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});
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self.expanded_hunks
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.hunk_update_tasks
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.insert(None, cx.background_executor().spawn(new_toggle_task));
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}
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pub(super) fn expand_diff_hunk(
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&mut self,
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diff_base_buffer: Option<Model<Buffer>>,
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hunk: &HunkToExpand,
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cx: &mut ViewContext<'_, Editor>,
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) -> Option<()> {
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let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
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let multi_buffer_row_range = hunk
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.multi_buffer_range
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.start
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.to_point(&multi_buffer_snapshot)
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..hunk.multi_buffer_range.end.to_point(&multi_buffer_snapshot);
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let hunk_start = hunk.multi_buffer_range.start;
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let hunk_end = hunk.multi_buffer_range.end;
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let buffer = self.buffer().clone();
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let (diff_base_buffer, deleted_text_range, deleted_text_lines) =
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buffer.update(cx, |buffer, cx| {
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let snapshot = buffer.snapshot(cx);
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let hunk = buffer_diff_hunk(&snapshot, multi_buffer_row_range.clone())?;
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let mut buffer_ranges = buffer.range_to_buffer_ranges(multi_buffer_row_range, cx);
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if buffer_ranges.len() == 1 {
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let (buffer, _, _) = buffer_ranges.pop()?;
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let diff_base_buffer = diff_base_buffer
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.or_else(|| self.current_diff_base_buffer(&buffer, cx))
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.or_else(|| create_diff_base_buffer(&buffer, cx));
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let buffer = buffer.read(cx);
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let deleted_text_lines = buffer.diff_base().and_then(|diff_base| {
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Some(
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diff_base
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.get(hunk.diff_base_byte_range.clone())?
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.lines()
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.count(),
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)
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});
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Some((
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diff_base_buffer?,
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hunk.diff_base_byte_range,
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deleted_text_lines,
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))
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} else {
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None
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}
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})?;
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let block_insert_index = match self.expanded_hunks.hunks.binary_search_by(|probe| {
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probe
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.hunk_range
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.start
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.cmp(&hunk_start, &multi_buffer_snapshot)
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}) {
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Ok(_already_present) => return None,
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Err(ix) => ix,
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};
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let block = match hunk.status {
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DiffHunkStatus::Removed => self.add_deleted_lines(
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deleted_text_lines,
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hunk_start,
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diff_base_buffer,
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deleted_text_range,
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cx,
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),
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DiffHunkStatus::Added => {
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self.highlight_rows::<DiffRowHighlight>(
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hunk_start..hunk_end,
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Some(added_hunk_color(cx)),
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cx,
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);
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None
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}
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DiffHunkStatus::Modified => {
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self.highlight_rows::<DiffRowHighlight>(
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hunk_start..hunk_end,
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Some(added_hunk_color(cx)),
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cx,
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);
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self.add_deleted_lines(
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deleted_text_lines,
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hunk_start,
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diff_base_buffer,
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deleted_text_range,
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cx,
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)
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}
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};
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self.expanded_hunks.hunks.insert(
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block_insert_index,
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ExpandedHunk {
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block,
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hunk_range: hunk_start..hunk_end,
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status: hunk.status,
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folded: false,
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diff_base_byte_range: hunk.diff_base_byte_range.clone(),
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},
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);
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Some(())
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}
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fn add_deleted_lines(
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&mut self,
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deleted_text_lines: Option<usize>,
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hunk_start: Anchor,
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diff_base_buffer: Model<Buffer>,
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deleted_text_range: Range<usize>,
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cx: &mut ViewContext<'_, Self>,
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) -> Option<BlockId> {
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if let Some(deleted_text_lines) = deleted_text_lines {
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self.insert_deleted_text_block(
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hunk_start,
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diff_base_buffer,
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deleted_text_range,
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deleted_text_lines as u8,
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cx,
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)
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} else {
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debug_panic!("Found no deleted text for removed hunk on position {hunk_start:?}");
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None
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}
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}
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fn insert_deleted_text_block(
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&mut self,
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position: Anchor,
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diff_base_buffer: Model<Buffer>,
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deleted_text_range: Range<usize>,
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deleted_text_height: u8,
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cx: &mut ViewContext<'_, Self>,
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) -> Option<BlockId> {
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let deleted_hunk_color = deleted_hunk_color(cx);
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let (editor_height, editor_with_deleted_text) =
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editor_with_deleted_text(diff_base_buffer, deleted_text_range, deleted_hunk_color, cx);
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let parent_gutter_width = self.gutter_width;
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let mut new_block_ids = self.insert_blocks(
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Some(BlockProperties {
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position,
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height: editor_height.max(deleted_text_height),
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style: BlockStyle::Flex,
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render: Box::new(move |_| {
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div()
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.bg(deleted_hunk_color)
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.size_full()
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.pl(parent_gutter_width)
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.child(editor_with_deleted_text.clone())
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.into_any_element()
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}),
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disposition: BlockDisposition::Above,
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}),
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None,
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cx,
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);
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if new_block_ids.len() == 1 {
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new_block_ids.pop()
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} else {
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debug_panic!(
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"Inserted one editor block but did not receive exactly one block id: {new_block_ids:?}"
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);
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None
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}
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}
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pub(super) fn clear_expanded_diff_hunks(&mut self, cx: &mut ViewContext<'_, Editor>) {
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self.expanded_hunks.hunk_update_tasks.clear();
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let to_remove = self
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.expanded_hunks
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.hunks
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.drain(..)
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.filter_map(|expanded_hunk| expanded_hunk.block)
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.collect();
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self.clear_row_highlights::<DiffRowHighlight>();
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self.remove_blocks(to_remove, None, cx);
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}
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pub(super) fn sync_expanded_diff_hunks(
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&mut self,
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buffer: Model<Buffer>,
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cx: &mut ViewContext<'_, Self>,
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) {
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let buffer_id = buffer.read(cx).remote_id();
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let buffer_diff_base_version = buffer.read(cx).diff_base_version();
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self.expanded_hunks
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.hunk_update_tasks
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.remove(&Some(buffer_id));
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let diff_base_buffer = self.current_diff_base_buffer(&buffer, cx);
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let new_sync_task = cx.spawn(move |editor, mut cx| async move {
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let diff_base_buffer_unchanged = diff_base_buffer.is_some();
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let Ok(diff_base_buffer) =
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cx.update(|cx| diff_base_buffer.or_else(|| create_diff_base_buffer(&buffer, cx)))
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else {
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return;
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};
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editor
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.update(&mut cx, |editor, cx| {
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if let Some(diff_base_buffer) = &diff_base_buffer {
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editor.expanded_hunks.diff_base.insert(
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buffer_id,
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DiffBaseBuffer {
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buffer: diff_base_buffer.clone(),
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diff_base_version: buffer_diff_base_version,
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},
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);
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}
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let snapshot = editor.snapshot(cx);
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let buffer_snapshot = buffer.read(cx).snapshot();
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let mut recalculated_hunks = buffer_snapshot
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.git_diff_hunks_in_row_range(0..u32::MAX)
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.fuse()
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.peekable();
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let mut highlights_to_remove =
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Vec::with_capacity(editor.expanded_hunks.hunks.len());
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let mut blocks_to_remove = HashSet::default();
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let mut hunks_to_reexpand =
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Vec::with_capacity(editor.expanded_hunks.hunks.len());
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editor.expanded_hunks.hunks.retain_mut(|expanded_hunk| {
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if expanded_hunk.hunk_range.start.buffer_id != Some(buffer_id) {
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return true;
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};
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let mut retain = false;
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if diff_base_buffer_unchanged {
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let expanded_hunk_display_range = expanded_hunk
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.hunk_range
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.start
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.to_display_point(&snapshot)
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.row()
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..expanded_hunk
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.hunk_range
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.end
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.to_display_point(&snapshot)
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.row();
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while let Some(buffer_hunk) = recalculated_hunks.peek() {
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match diff_hunk_to_display(buffer_hunk, &snapshot) {
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DisplayDiffHunk::Folded { display_row } => {
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recalculated_hunks.next();
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if !expanded_hunk.folded
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&& expanded_hunk_display_range
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.to_inclusive()
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.contains(&display_row)
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{
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retain = true;
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expanded_hunk.folded = true;
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highlights_to_remove
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.push(expanded_hunk.hunk_range.clone());
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if let Some(block) = expanded_hunk.block.take() {
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blocks_to_remove.insert(block);
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}
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break;
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} else {
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continue;
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}
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}
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DisplayDiffHunk::Unfolded {
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diff_base_byte_range,
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display_row_range,
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multi_buffer_range,
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status,
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} => {
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let hunk_display_range = display_row_range;
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if expanded_hunk_display_range.start
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> hunk_display_range.end
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{
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recalculated_hunks.next();
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continue;
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} else if expanded_hunk_display_range.end
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< hunk_display_range.start
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{
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break;
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} else {
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if !expanded_hunk.folded
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&& expanded_hunk_display_range == hunk_display_range
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&& expanded_hunk.status == buffer_hunk.status()
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&& expanded_hunk.diff_base_byte_range
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== buffer_hunk.diff_base_byte_range
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{
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recalculated_hunks.next();
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retain = true;
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} else {
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hunks_to_reexpand.push(HunkToExpand {
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status,
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multi_buffer_range,
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diff_base_byte_range,
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|
});
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if !retain {
|
|
blocks_to_remove.extend(expanded_hunk.block);
|
|
highlights_to_remove.push(expanded_hunk.hunk_range.clone());
|
|
}
|
|
retain
|
|
});
|
|
|
|
for removed_rows in highlights_to_remove {
|
|
editor.highlight_rows::<DiffRowHighlight>(removed_rows, None, cx);
|
|
}
|
|
editor.remove_blocks(blocks_to_remove, None, cx);
|
|
|
|
if let Some(diff_base_buffer) = &diff_base_buffer {
|
|
for hunk in hunks_to_reexpand {
|
|
editor.expand_diff_hunk(Some(diff_base_buffer.clone()), &hunk, cx);
|
|
}
|
|
}
|
|
})
|
|
.ok();
|
|
});
|
|
|
|
self.expanded_hunks.hunk_update_tasks.insert(
|
|
Some(buffer_id),
|
|
cx.background_executor().spawn(new_sync_task),
|
|
);
|
|
}
|
|
|
|
fn current_diff_base_buffer(
|
|
&mut self,
|
|
buffer: &Model<Buffer>,
|
|
cx: &mut AppContext,
|
|
) -> Option<Model<Buffer>> {
|
|
buffer.update(cx, |buffer, _| {
|
|
match self.expanded_hunks.diff_base.entry(buffer.remote_id()) {
|
|
hash_map::Entry::Occupied(o) => {
|
|
if o.get().diff_base_version != buffer.diff_base_version() {
|
|
o.remove();
|
|
None
|
|
} else {
|
|
Some(o.get().buffer.clone())
|
|
}
|
|
}
|
|
hash_map::Entry::Vacant(_) => None,
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
fn create_diff_base_buffer(buffer: &Model<Buffer>, cx: &mut AppContext) -> Option<Model<Buffer>> {
|
|
buffer
|
|
.update(cx, |buffer, _| {
|
|
let language = buffer.language().cloned();
|
|
let diff_base = buffer.diff_base().map(|s| s.to_owned());
|
|
Some((diff_base?, language))
|
|
})
|
|
.map(|(diff_base, language)| {
|
|
cx.new_model(|cx| {
|
|
let buffer = Buffer::local(diff_base, cx);
|
|
match language {
|
|
Some(language) => buffer.with_language(language, cx),
|
|
None => buffer,
|
|
}
|
|
})
|
|
})
|
|
}
|
|
|
|
fn added_hunk_color(cx: &AppContext) -> Hsla {
|
|
let mut created_color = cx.theme().status().git().created;
|
|
created_color.fade_out(0.7);
|
|
created_color
|
|
}
|
|
|
|
fn deleted_hunk_color(cx: &AppContext) -> Hsla {
|
|
let mut deleted_color = cx.theme().status().git().deleted;
|
|
deleted_color.fade_out(0.7);
|
|
deleted_color
|
|
}
|
|
|
|
fn editor_with_deleted_text(
|
|
diff_base_buffer: Model<Buffer>,
|
|
deleted_text_range: Range<usize>,
|
|
deleted_color: Hsla,
|
|
cx: &mut ViewContext<'_, Editor>,
|
|
) -> (u8, View<Editor>) {
|
|
let editor = cx.new_view(|cx| {
|
|
let multi_buffer =
|
|
cx.new_model(|_| MultiBuffer::without_headers(0, language::Capability::ReadOnly));
|
|
multi_buffer.update(cx, |multi_buffer, cx| {
|
|
multi_buffer.push_excerpts(
|
|
diff_base_buffer,
|
|
Some(ExcerptRange {
|
|
context: deleted_text_range,
|
|
primary: None,
|
|
}),
|
|
cx,
|
|
);
|
|
});
|
|
|
|
let mut editor = Editor::for_multibuffer(multi_buffer, None, cx);
|
|
editor.soft_wrap_mode_override = Some(language::language_settings::SoftWrap::None);
|
|
editor.show_wrap_guides = Some(false);
|
|
editor.show_gutter = false;
|
|
editor.scroll_manager.set_forbid_vertical_scroll(true);
|
|
editor.set_read_only(true);
|
|
|
|
let editor_snapshot = editor.snapshot(cx);
|
|
let start = editor_snapshot.buffer_snapshot.anchor_before(0);
|
|
let end = editor_snapshot
|
|
.buffer_snapshot
|
|
.anchor_after(editor.buffer.read(cx).len(cx));
|
|
|
|
editor.highlight_rows::<DiffRowHighlight>(start..end, Some(deleted_color), cx);
|
|
editor
|
|
});
|
|
|
|
let editor_height = editor.update(cx, |editor, cx| editor.max_point(cx).row() as u8);
|
|
(editor_height, editor)
|
|
}
|
|
|
|
fn buffer_diff_hunk(
|
|
buffer_snapshot: &MultiBufferSnapshot,
|
|
row_range: Range<Point>,
|
|
) -> Option<DiffHunk<u32>> {
|
|
let mut hunks = buffer_snapshot.git_diff_hunks_in_range(row_range.start.row..row_range.end.row);
|
|
let hunk = hunks.next()?;
|
|
let second_hunk = hunks.next();
|
|
if second_hunk.is_none() {
|
|
return Some(hunk);
|
|
}
|
|
None
|
|
}
|