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use collections::HashMap;use editor::{display_map::ToDisplayPoint, scroll::Autoscroll};use gpui::ViewContext;use language::{Bias, Point, SelectionGoal};use multi_buffer::MultiBufferRow; use crate::{    motion::Motion,    normal::{ChangeCase, ConvertToLowerCase, ConvertToUpperCase},    object::Object,    state::Mode,    Vim,}; pub enum CaseTarget {    Lowercase,    Uppercase,    OppositeCase,} impl Vim {    pub fn change_case_motion(        &mut self,        motion: Motion,        times: Option<usize>,        mode: CaseTarget,        cx: &mut ViewContext<Self>,    ) {        self.stop_recording(cx);        self.update_editor(cx, |_, editor, cx| {            editor.set_clip_at_line_ends(false, cx);            let text_layout_details = editor.text_layout_details(cx);            editor.transact(cx, |editor, cx| {                let mut selection_starts: HashMap<_, _> = Default::default();                editor.change_selections(None, cx, |s| {                    s.move_with(|map, selection| {                        let anchor = map.display_point_to_anchor(selection.head(), Bias::Left);                        selection_starts.insert(selection.id, anchor);                        motion.expand_selection(map, selection, times, false, &text_layout_details);                    });                });                match mode {                    CaseTarget::Lowercase => editor.convert_to_lower_case(&Default::default(), cx),                    CaseTarget::Uppercase => editor.convert_to_upper_case(&Default::default(), cx),                    CaseTarget::OppositeCase => {                        editor.convert_to_opposite_case(&Default::default(), cx)                    }                }                editor.change_selections(None, cx, |s| {                    s.move_with(|map, selection| {                        let anchor = selection_starts.remove(&selection.id).unwrap();                        selection.collapse_to(anchor.to_display_point(map), SelectionGoal::None);                    });                });            });            editor.set_clip_at_line_ends(true, cx);        });    }     pub fn change_case_object(        &mut self,        object: Object,        around: bool,        mode: CaseTarget,        cx: &mut ViewContext<Self>,    ) {        self.stop_recording(cx);        self.update_editor(cx, |_, editor, cx| {            editor.transact(cx, |editor, cx| {                let mut original_positions: HashMap<_, _> = Default::default();                editor.change_selections(None, cx, |s| {                    s.move_with(|map, selection| {                        object.expand_selection(map, selection, around);                        original_positions.insert(                            selection.id,                            map.display_point_to_anchor(selection.start, Bias::Left),                        );                    });                });                match mode {                    CaseTarget::Lowercase => editor.convert_to_lower_case(&Default::default(), cx),                    CaseTarget::Uppercase => editor.convert_to_upper_case(&Default::default(), cx),                    CaseTarget::OppositeCase => {                        editor.convert_to_opposite_case(&Default::default(), cx)                    }                }                editor.change_selections(None, cx, |s| {                    s.move_with(|map, selection| {                        let anchor = original_positions.remove(&selection.id).unwrap();                        selection.collapse_to(anchor.to_display_point(map), SelectionGoal::None);                    });                });            });        });    }     pub fn change_case(&mut self, _: &ChangeCase, cx: &mut ViewContext<Self>) {        self.manipulate_text(cx, |c| {            if c.is_lowercase() {                c.to_uppercase().collect::<Vec<char>>()            } else {                c.to_lowercase().collect::<Vec<char>>()            }        })    }     pub fn convert_to_upper_case(&mut self, _: &ConvertToUpperCase, cx: &mut ViewContext<Self>) {        self.manipulate_text(cx, |c| c.to_uppercase().collect::<Vec<char>>())    }     pub fn convert_to_lower_case(&mut self, _: &ConvertToLowerCase, cx: &mut ViewContext<Self>) {        self.manipulate_text(cx, |c| c.to_lowercase().collect::<Vec<char>>())    }     fn manipulate_text<F>(&mut self, cx: &mut ViewContext<Self>, transform: F)    where        F: Fn(char) -> Vec<char> + Copy,    {        self.record_current_action(cx);        self.store_visual_marks(cx);        let count = Vim::take_count(cx).unwrap_or(1) as u32;         self.update_editor(cx, |vim, editor, cx| {            let mut ranges = Vec::new();            let mut cursor_positions = Vec::new();            let snapshot = editor.buffer().read(cx).snapshot(cx);            for selection in editor.selections.all::<Point>(cx) {                match vim.mode {                    Mode::VisualLine => {                        let start = Point::new(selection.start.row, 0);                        let end = Point::new(                            selection.end.row,                            snapshot.line_len(MultiBufferRow(selection.end.row)),                        );                        ranges.push(start..end);                        cursor_positions.push(start..start);                    }                    Mode::Visual => {                        ranges.push(selection.start..selection.end);                        cursor_positions.push(selection.start..selection.start);                    }                    Mode::VisualBlock => {                        ranges.push(selection.start..selection.end);                        if cursor_positions.is_empty() {                            cursor_positions.push(selection.start..selection.start);                        }                    }                    Mode::Insert | Mode::Normal | Mode::Replace => {                        let start = selection.start;                        let mut end = start;                        for _ in 0..count {                            end = snapshot.clip_point(end + Point::new(0, 1), Bias::Right);                        }                        ranges.push(start..end);                         if end.column == snapshot.line_len(MultiBufferRow(end.row)) {                            end = snapshot.clip_point(end - Point::new(0, 1), Bias::Left);                        }                        cursor_positions.push(end..end)                    }                }            }            editor.transact(cx, |editor, cx| {                for range in ranges.into_iter().rev() {                    let snapshot = editor.buffer().read(cx).snapshot(cx);                    let text = snapshot                        .text_for_range(range.start..range.end)                        .flat_map(|s| s.chars())                        .flat_map(transform)                        .collect::<String>();                    editor.edit([(range, text)], cx)                }                editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                    s.select_ranges(cursor_positions)                })            });        });        self.switch_mode(Mode::Normal, true, cx)    }} #[cfg(test)]mod test {    use crate::{state::Mode, test::NeovimBackedTestContext};     #[gpui::test]    async fn test_change_case(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        cx.set_shared_state("ˇabC\n").await;        cx.simulate_shared_keystrokes("~").await;        cx.shared_state().await.assert_eq("AˇbC\n");        cx.simulate_shared_keystrokes("2 ~").await;        cx.shared_state().await.assert_eq("ABˇc\n");         // works in visual mode        cx.set_shared_state("a😀C«dÉ1*fˇ»\n").await;        cx.simulate_shared_keystrokes("~").await;        cx.shared_state().await.assert_eq("a😀CˇDé1*F\n");         // works with multibyte characters        cx.simulate_shared_keystrokes("~").await;        cx.set_shared_state("aˇC😀é1*F\n").await;        cx.simulate_shared_keystrokes("4 ~").await;        cx.shared_state().await.assert_eq("ac😀É1ˇ*F\n");         // works with line selections        cx.set_shared_state("abˇC\n").await;        cx.simulate_shared_keystrokes("shift-v ~").await;        cx.shared_state().await.assert_eq("ˇABc\n");         // works in visual block mode        cx.set_shared_state("ˇaa\nbb\ncc").await;        cx.simulate_shared_keystrokes("ctrl-v j ~").await;        cx.shared_state().await.assert_eq("ˇAa\nBb\ncc");         // works with multiple cursors (zed only)        cx.set_state("aˇßcdˇe\n", Mode::Normal);        cx.simulate_keystrokes("~");        cx.assert_state("aSSˇcdˇE\n", Mode::Normal);    }     #[gpui::test]    async fn test_convert_to_upper_case(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        // works in visual mode        cx.set_shared_state("a😀C«dÉ1*fˇ»\n").await;        cx.simulate_shared_keystrokes("shift-u").await;        cx.shared_state().await.assert_eq("a😀CˇDÉ1*F\n");         // works with line selections        cx.set_shared_state("abˇC\n").await;        cx.simulate_shared_keystrokes("shift-v shift-u").await;        cx.shared_state().await.assert_eq("ˇABC\n");         // works in visual block mode        cx.set_shared_state("ˇaa\nbb\ncc").await;        cx.simulate_shared_keystrokes("ctrl-v j shift-u").await;        cx.shared_state().await.assert_eq("ˇAa\nBb\ncc");    }     #[gpui::test]    async fn test_convert_to_lower_case(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;        // works in visual mode        cx.set_shared_state("A😀c«DÉ1*fˇ»\n").await;        cx.simulate_shared_keystrokes("u").await;        cx.shared_state().await.assert_eq("A😀cˇdé1*f\n");         // works with line selections        cx.set_shared_state("ABˇc\n").await;        cx.simulate_shared_keystrokes("shift-v u").await;        cx.shared_state().await.assert_eq("ˇabc\n");         // works in visual block mode        cx.set_shared_state("ˇAa\nBb\nCc").await;        cx.simulate_shared_keystrokes("ctrl-v j u").await;        cx.shared_state().await.assert_eq("ˇaa\nbb\nCc");    }     #[gpui::test]    async fn test_change_case_motion(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.set_shared_state("ˇabc def").await;        cx.simulate_shared_keystrokes("g shift-u w").await;        cx.shared_state().await.assert_eq("ˇABC def");         cx.simulate_shared_keystrokes("g u w").await;        cx.shared_state().await.assert_eq("ˇabc def");         cx.simulate_shared_keystrokes("g ~ w").await;        cx.shared_state().await.assert_eq("ˇABC def");         cx.simulate_shared_keystrokes(".").await;        cx.shared_state().await.assert_eq("ˇabc def");         cx.set_shared_state("abˇc def").await;        cx.simulate_shared_keystrokes("g ~ i w").await;        cx.shared_state().await.assert_eq("ˇABC def");         cx.simulate_shared_keystrokes(".").await;        cx.shared_state().await.assert_eq("ˇabc def");         cx.simulate_shared_keystrokes("g shift-u $").await;        cx.shared_state().await.assert_eq("ˇABC DEF");    }}