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Select change range for goto_first/last_change commands (#5206)

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This matches the behavior from 42ad1a9e04
but for the first and last change. The selection rules are the same
as for goto_next/prev_change: additions and modifications select the
added and modified range while deletions are represented with a point.
This commit is contained in:
Michael Davis 2023-02-06 21:43:48 -06:00 • committed by GitHub
parent f71f27f804
commit 23ed8c12f1
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 19 deletions
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37
helix-term/src/commands.rs
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@ -2927,14 +2927,6 @@ fn exit_select_mode(cx: &mut Context) {
}
}
fn goto_pos(editor: &mut Editor, pos: usize) {
let (view, doc) = current!(editor);
push_jump(view, doc);
doc.set_selection(view.id, Selection::point(pos));
align_view(doc, view, Align::Center);
}
fn goto_first_diag(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let selection = match doc.diagnostics().first() {
@ -3012,7 +3004,7 @@ fn goto_last_change(cx: &mut Context) {
fn goto_first_change_impl(cx: &mut Context, reverse: bool) {
let editor = &mut cx.editor;
let (_, doc) = current!(editor);
let (view, doc) = current!(editor);
if let Some(handle) = doc.diff_handle() {
let hunk = {
let hunks = handle.hunks();
@ -3024,8 +3016,8 @@ fn goto_first_change_impl(cx: &mut Context, reverse: bool) {
hunks.nth_hunk(idx)
};
if hunk != Hunk::NONE {
let pos = doc.text().line_to_char(hunk.after.start as usize);
goto_pos(editor, pos)
let range = hunk_range(hunk, doc.text().slice(..));
doc.set_selection(view.id, Selection::single(range.anchor, range.head));
}
}
}
@ -3069,14 +3061,7 @@ fn goto_next_change_impl(cx: &mut Context, direction: Direction) {
return range;
};
let hunk = hunks.nth_hunk(hunk_idx);
let hunk_start = doc_text.line_to_char(hunk.after.start as usize);
let hunk_end = if hunk.after.is_empty() {
hunk_start + 1
} else {
doc_text.line_to_char(hunk.after.end as usize)
};
let new_range = Range::new(hunk_start, hunk_end);
let new_range = hunk_range(hunk, doc_text);
if editor.mode == Mode::Select {
let head = if new_range.head < range.anchor {
new_range.anchor
@ -3096,6 +3081,20 @@ fn goto_next_change_impl(cx: &mut Context, direction: Direction) {
cx.editor.last_motion = Some(Motion(Box::new(motion)));
}
/// Returns the [Range] for a [Hunk] in the given text.
/// Additions and modifications cover the added and modified ranges.
/// Deletions are represented as the point at the start of the deletion hunk.
fn hunk_range(hunk: Hunk, text: RopeSlice) -> Range {
let anchor = text.line_to_char(hunk.after.start as usize);
let head = if hunk.after.is_empty() {
anchor + 1
} else {
text.line_to_char(hunk.after.end as usize)
};
Range::new(anchor, head)
}
pub mod insert {
use super::*;
pub type Hook = fn(&Rope, &Selection, char) -> Option<Transaction>;