use crate::{motion::Motion, object::Object, utils::copy_selections_content, Vim};use collections::{HashMap, HashSet};use editor::{    display_map::{DisplaySnapshot, ToDisplayPoint},    scroll::Autoscroll,    Bias, DisplayPoint,};use gpui::WindowContext;use language::{Point, Selection}; pub fn delete_motion(vim: &mut Vim, motion: Motion, times: Option<usize>, cx: &mut WindowContext) {    vim.stop_recording();    vim.update_active_editor(cx, |vim, editor, cx| {        let text_layout_details = editor.text_layout_details(cx);        editor.transact(cx, |editor, cx| {            editor.set_clip_at_line_ends(false, cx);            let mut original_columns: HashMap<_, _> = Default::default();            editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                s.move_with(|map, selection| {                    let original_head = selection.head();                    original_columns.insert(selection.id, original_head.column());                    motion.expand_selection(map, selection, times, true, &text_layout_details);                     // Motion::NextWordStart on an empty line should delete it.                    if let Motion::NextWordStart {                        ignore_punctuation: _,                    } = motion                    {                        if selection.is_empty()                            && map                                .buffer_snapshot                                .line_len(selection.start.to_point(&map).row)                                == 0                        {                            selection.end = map                                .buffer_snapshot                                .clip_point(                                    Point::new(selection.start.to_point(&map).row + 1, 0),                                    Bias::Left,                                )                                .to_display_point(map)                        }                    }                });            });            copy_selections_content(vim, editor, motion.linewise(), cx);            editor.insert("", cx);             // Fixup cursor position after the deletion            editor.set_clip_at_line_ends(true, cx);            editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                s.move_with(|map, selection| {                    let mut cursor = selection.head();                    if motion.linewise() {                        if let Some(column) = original_columns.get(&selection.id) {                            *cursor.column_mut() = *column                        }                    }                    cursor = map.clip_point(cursor, Bias::Left);                    selection.collapse_to(cursor, selection.goal)                });            });        });    });} pub fn delete_object(vim: &mut Vim, object: Object, around: bool, cx: &mut WindowContext) {    vim.stop_recording();    vim.update_active_editor(cx, |vim, editor, cx| {        editor.transact(cx, |editor, cx| {            editor.set_clip_at_line_ends(false, cx);            // Emulates behavior in vim where if we expanded backwards to include a newline            // the cursor gets set back to the start of the line            let mut should_move_to_start: HashSet<_> = Default::default();            editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                s.move_with(|map, selection| {                    object.expand_selection(map, selection, around);                    let offset_range = selection.map(|p| p.to_offset(map, Bias::Left)).range();                    let mut move_selection_start_to_previous_line =                        |map: &DisplaySnapshot, selection: &mut Selection<DisplayPoint>| {                            let start = selection.start.to_offset(map, Bias::Left);                            if selection.start.row() > 0 {                                should_move_to_start.insert(selection.id);                                selection.start = (start - '\n'.len_utf8()).to_display_point(map);                            }                        };                    let contains_only_newlines = map                        .chars_at(selection.start)                        .take_while(|(_, p)| p < &selection.end)                        .all(|(char, _)| char == '\n')                        && !offset_range.is_empty();                    let end_at_newline = map                        .chars_at(selection.end)                        .next()                        .map(|(c, _)| c == '\n')                        .unwrap_or(false);                     // If expanded range contains only newlines and                    // the object is around or sentence, expand to include a newline                    // at the end or start                    if (around || object == Object::Sentence) && contains_only_newlines {                        if end_at_newline {                            move_selection_end_to_next_line(map, selection);                        } else {                            move_selection_start_to_previous_line(map, selection);                        }                    }                     // Does post-processing for the trailing newline and EOF                    // when not cancelled.                    let cancelled = around && selection.start == selection.end;                    if object == Object::Paragraph && !cancelled {                        // EOF check should be done before including a trailing newline.                        if ends_at_eof(map, selection) {                            move_selection_start_to_previous_line(map, selection);                        }                         if end_at_newline {                            move_selection_end_to_next_line(map, selection);                        }                    }                });            });            copy_selections_content(vim, editor, false, cx);            editor.insert("", cx);             // Fixup cursor position after the deletion            editor.set_clip_at_line_ends(true, cx);            editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                s.move_with(|map, selection| {                    let mut cursor = selection.head();                    if should_move_to_start.contains(&selection.id) {                        *cursor.column_mut() = 0;                    }                    cursor = map.clip_point(cursor, Bias::Left);                    selection.collapse_to(cursor, selection.goal)                });            });        });    });} fn move_selection_end_to_next_line(map: &DisplaySnapshot, selection: &mut Selection<DisplayPoint>) {    let end = selection.end.to_offset(map, Bias::Left);    selection.end = (end + '\n'.len_utf8()).to_display_point(map);} fn ends_at_eof(map: &DisplaySnapshot, selection: &mut Selection<DisplayPoint>) -> bool {    selection.end.to_point(map) == map.buffer_snapshot.max_point()} #[cfg(test)]mod test {    use indoc::indoc;     use crate::{        state::Mode,        test::{ExemptionFeatures, NeovimBackedTestContext, VimTestContext},    };     #[gpui::test]    async fn test_delete_h(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "h"]);        cx.assert("Teˇst").await;        cx.assert("Tˇest").await;        cx.assert("ˇTest").await;        cx.assert(indoc! {"            Test            ˇtest"})            .await;    }     #[gpui::test]    async fn test_delete_l(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "l"]);        cx.assert("ˇTest").await;        cx.assert("Teˇst").await;        cx.assert("Tesˇt").await;        cx.assert(indoc! {"                Tesˇt                test"})            .await;    }     #[gpui::test]    async fn test_delete_w(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        cx.assert_neovim_compatible(            indoc! {"            Test tesˇt                test"},            ["d", "w"],        )        .await;         cx.assert_neovim_compatible("Teˇst", ["d", "w"]).await;        cx.assert_neovim_compatible("Tˇest test", ["d", "w"]).await;        cx.assert_neovim_compatible(            indoc! {"            Test teˇst            test"},            ["d", "w"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            Test tesˇt            test"},            ["d", "w"],        )        .await;         cx.assert_neovim_compatible(            indoc! {"            Test test            ˇ            test"},            ["d", "w"],        )        .await;         let mut cx = cx.binding(["d", "shift-w"]);        cx.assert_neovim_compatible("Test teˇst-test test", ["d", "shift-w"])            .await;    }     #[gpui::test]    async fn test_delete_next_word_end(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "e"]);        // cx.assert("Teˇst Test").await;        // cx.assert("Tˇest test").await;        cx.assert(indoc! {"            Test teˇst            test"})            .await;        cx.assert(indoc! {"            Test tesˇt            test"})            .await;        cx.assert_exempted(            indoc! {"            Test test            ˇ            test"},            ExemptionFeatures::OperatorLastNewlineRemains,        )        .await;         let mut cx = cx.binding(["d", "shift-e"]);        cx.assert("Test teˇst-test test").await;    }     #[gpui::test]    async fn test_delete_b(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "b"]);        cx.assert("Teˇst Test").await;        cx.assert("Test ˇtest").await;        cx.assert("Test1 test2 ˇtest3").await;        cx.assert(indoc! {"            Test test            ˇtest"})            .await;        cx.assert(indoc! {"            Test test            ˇ            test"})            .await;         let mut cx = cx.binding(["d", "shift-b"]);        cx.assert("Test test-test ˇtest").await;    }     #[gpui::test]    async fn test_delete_end_of_line(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "$"]);        cx.assert(indoc! {"            The qˇuick            brown fox"})            .await;        cx.assert(indoc! {"            The quick            ˇ            brown fox"})            .await;    }     #[gpui::test]    async fn test_delete_0(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "0"]);        cx.assert(indoc! {"            The qˇuick            brown fox"})            .await;        cx.assert(indoc! {"            The quick            ˇ            brown fox"})            .await;    }     #[gpui::test]    async fn test_delete_k(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "k"]);        cx.assert(indoc! {"            The quick            brown ˇfox            jumps over"})            .await;        cx.assert(indoc! {"            The quick            brown fox            jumps ˇover"})            .await;        cx.assert(indoc! {"            The qˇuick            brown fox            jumps over"})            .await;        cx.assert(indoc! {"            ˇbrown fox            jumps over"})            .await;    }     #[gpui::test]    async fn test_delete_j(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await.binding(["d", "j"]);        cx.assert(indoc! {"            The quick            brown ˇfox            jumps over"})            .await;        cx.assert(indoc! {"            The quick            brown fox            jumps ˇover"})            .await;        cx.assert(indoc! {"            The qˇuick            brown fox            jumps over"})            .await;        cx.assert(indoc! {"            The quick            brown fox            ˇ"})            .await;    }     #[gpui::test]    async fn test_delete_end_of_document(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        cx.assert_neovim_compatible(            indoc! {"            The quick            brownˇ fox            jumps over            the lazy"},            ["d", "shift-g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            The quick            brownˇ fox            jumps over            the lazy"},            ["d", "shift-g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            The quick            brown fox            jumps over            the lˇazy"},            ["d", "shift-g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            The quick            brown fox            jumps over            ˇ"},            ["d", "shift-g"],        )        .await;    }     #[gpui::test]    async fn test_delete_gg(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx)            .await            .binding(["d", "g", "g"]);        cx.assert_neovim_compatible(            indoc! {"            The quick            brownˇ fox            jumps over            the lazy"},            ["d", "g", "g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            The quick            brown fox            jumps over            the lˇazy"},            ["d", "g", "g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            The qˇuick            brown fox            jumps over            the lazy"},            ["d", "g", "g"],        )        .await;        cx.assert_neovim_compatible(            indoc! {"            ˇ            brown fox            jumps over            the lazy"},            ["d", "g", "g"],        )        .await;    }     #[gpui::test]    async fn test_cancel_delete_operator(cx: &mut gpui::TestAppContext) {        let mut cx = VimTestContext::new(cx, true).await;        cx.set_state(            indoc! {"                The quick brown                fox juˇmps over                the lazy dog"},            Mode::Normal,        );         // Canceling operator twice reverts to normal mode with no active operator        cx.simulate_keystrokes(["d", "escape", "k"]);        assert_eq!(cx.active_operator(), None);        assert_eq!(cx.mode(), Mode::Normal);        cx.assert_editor_state(indoc! {"            The quˇick brown            fox jumps over            the lazy dog"});    }     #[gpui::test]    async fn test_unbound_command_cancels_pending_operator(cx: &mut gpui::TestAppContext) {        let mut cx = VimTestContext::new(cx, true).await;        cx.set_state(            indoc! {"                The quick brown                fox juˇmps over                the lazy dog"},            Mode::Normal,        );         // Canceling operator twice reverts to normal mode with no active operator        cx.simulate_keystrokes(["d", "y"]);        assert_eq!(cx.active_operator(), None);        assert_eq!(cx.mode(), Mode::Normal);    }     #[gpui::test]    async fn test_delete_with_counts(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        cx.set_shared_state(indoc! {"                The ˇquick brown                fox jumps over                the lazy dog"})            .await;        cx.simulate_shared_keystrokes(["d", "2", "d"]).await;        cx.assert_shared_state(indoc! {"        the ˇlazy dog"})            .await;         cx.set_shared_state(indoc! {"                The ˇquick brown                fox jumps over                the lazy dog"})            .await;        cx.simulate_shared_keystrokes(["2", "d", "d"]).await;        cx.assert_shared_state(indoc! {"        the ˇlazy dog"})            .await;         cx.set_shared_state(indoc! {"                The ˇquick brown                fox jumps over                the moon,                a star, and                the lazy dog"})

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