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use std::ops::Range; use editor::{scroll::Autoscroll, Editor, MultiBufferSnapshot, ToOffset, ToPoint};use gpui::{impl_actions, ViewContext};use language::{Bias, Point};use serde::Deserialize; use crate::{state::Mode, Vim}; #[derive(Clone, Deserialize, PartialEq)]#[serde(rename_all = "camelCase")]struct Increment {    #[serde(default)]    step: bool,} #[derive(Clone, Deserialize, PartialEq)]#[serde(rename_all = "camelCase")]struct Decrement {    #[serde(default)]    step: bool,} impl_actions!(vim, [Increment, Decrement]); pub fn register(editor: &mut Editor, cx: &mut ViewContext<Vim>) {    Vim::action(editor, cx, |vim, action: &Increment, cx| {        vim.record_current_action(cx);        let count = vim.take_count(cx).unwrap_or(1);        let step = if action.step { 1 } else { 0 };        vim.increment(count as i32, step, cx)    });    Vim::action(editor, cx, |vim, action: &Decrement, cx| {        vim.record_current_action(cx);        let count = vim.take_count(cx).unwrap_or(1);        let step = if action.step { -1 } else { 0 };        vim.increment(-(count as i32), step, cx)    });} impl Vim {    fn increment(&mut self, mut delta: i32, step: i32, cx: &mut ViewContext<Self>) {        self.store_visual_marks(cx);        self.update_editor(cx, |vim, editor, cx| {            let mut edits = Vec::new();            let mut new_anchors = Vec::new();             let snapshot = editor.buffer().read(cx).snapshot(cx);            for selection in editor.selections.all_adjusted(cx) {                if !selection.is_empty()                    && (vim.mode != Mode::VisualBlock || new_anchors.is_empty())                {                    new_anchors.push((true, snapshot.anchor_before(selection.start)))                }                for row in selection.start.row..=selection.end.row {                    let start = if row == selection.start.row {                        selection.start                    } else {                        Point::new(row, 0)                    };                     if let Some((range, num, radix)) = find_number(&snapshot, start) {                        if let Ok(val) = i32::from_str_radix(&num, radix) {                            let result = val + delta;                            delta += step;                            let replace = match radix {                                10 => format!("{}", result),                                16 => {                                    if num.to_ascii_lowercase() == num {                                        format!("{:x}", result)                                    } else {                                        format!("{:X}", result)                                    }                                }                                2 => format!("{:b}", result),                                _ => unreachable!(),                            };                            edits.push((range.clone(), replace));                        }                        if selection.is_empty() {                            new_anchors.push((false, snapshot.anchor_after(range.end)))                        }                    } else if selection.is_empty() {                        new_anchors.push((true, snapshot.anchor_after(start)))                    }                }            }            editor.transact(cx, |editor, cx| {                editor.edit(edits, cx);                 let snapshot = editor.buffer().read(cx).snapshot(cx);                editor.change_selections(Some(Autoscroll::fit()), cx, |s| {                    let mut new_ranges = Vec::new();                    for (visual, anchor) in new_anchors.iter() {                        let mut point = anchor.to_point(&snapshot);                        if !*visual && point.column > 0 {                            point.column -= 1;                            point = snapshot.clip_point(point, Bias::Left)                        }                        new_ranges.push(point..point);                    }                    s.select_ranges(new_ranges)                })            });        });        self.switch_mode(Mode::Normal, true, cx)    }} fn find_number(    snapshot: &MultiBufferSnapshot,    start: Point,) -> Option<(Range<Point>, String, u32)> {    let mut offset = start.to_offset(snapshot);     let ch0 = snapshot.chars_at(offset).next();    if ch0.as_ref().is_some_and(char::is_ascii_digit) || matches!(ch0, Some('-' | 'b' | 'x')) {        // go backwards to the start of any number the selection is within        for ch in snapshot.reversed_chars_at(offset) {            if ch.is_ascii_digit() || ch == '-' || ch == 'b' || ch == 'x' {                offset -= ch.len_utf8();                continue;            }            break;        }    }     let mut begin = None;    let mut end = None;    let mut num = String::new();    let mut radix = 10;     let mut chars = snapshot.chars_at(offset).peekable();    // find the next number on the line (may start after the original cursor position)    while let Some(ch) = chars.next() {        if num == "0" && ch == 'b' && chars.peek().is_some() && chars.peek().unwrap().is_digit(2) {            radix = 2;            begin = None;            num = String::new();        }        if num == "0"            && ch == 'x'            && chars.peek().is_some()            && chars.peek().unwrap().is_ascii_hexdigit()        {            radix = 16;            begin = None;            num = String::new();        }         if ch.is_digit(radix)            || (begin.is_none()                && ch == '-'                && chars.peek().is_some()                && chars.peek().unwrap().is_digit(radix))        {            if begin.is_none() {                begin = Some(offset);            }            num.push(ch);        } else if begin.is_some() {            end = Some(offset);            break;        } else if ch == '\n' {            break;        }        offset += ch.len_utf8();    }    if let Some(begin) = begin {        let end = end.unwrap_or(offset);        Some((begin.to_point(snapshot)..end.to_point(snapshot), num, radix))    } else {        None    }} #[cfg(test)]mod test {    use indoc::indoc;     use crate::test::NeovimBackedTestContext;     #[gpui::test]    async fn test_increment(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.set_shared_state(indoc! {"            1ˇ2            "})            .await;         cx.simulate_shared_keystrokes("ctrl-a").await;        cx.shared_state().await.assert_eq(indoc! {"            1ˇ3            "});        cx.simulate_shared_keystrokes("ctrl-x").await;        cx.shared_state().await.assert_eq(indoc! {"            1ˇ2            "});         cx.simulate_shared_keystrokes("9 9 ctrl-a").await;        cx.shared_state().await.assert_eq(indoc! {"            11ˇ1            "});        cx.simulate_shared_keystrokes("1 1 1 ctrl-x").await;        cx.shared_state().await.assert_eq(indoc! {"            ˇ0            "});        cx.simulate_shared_keystrokes(".").await;        cx.shared_state().await.assert_eq(indoc! {"            -11ˇ1            "});    }     #[gpui::test]    async fn test_increment_with_dot(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.set_shared_state(indoc! {"            1ˇ.2            "})            .await;         cx.simulate_shared_keystrokes("ctrl-a").await;        cx.shared_state().await.assert_eq(indoc! {"            1.ˇ3            "});        cx.simulate_shared_keystrokes("ctrl-x").await;        cx.shared_state().await.assert_eq(indoc! {"            1.ˇ2            "});    }     #[gpui::test]    async fn test_increment_with_two_dots(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.set_shared_state(indoc! {"            111.ˇ.2            "})            .await;         cx.simulate_shared_keystrokes("ctrl-a").await;        cx.shared_state().await.assert_eq(indoc! {"            111..ˇ3            "});        cx.simulate_shared_keystrokes("ctrl-x").await;        cx.shared_state().await.assert_eq(indoc! {"            111..ˇ2            "});    }     #[gpui::test]    async fn test_increment_radix(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.simulate("ctrl-a", "ˇ total: 0xff")            .await            .assert_matches();        cx.simulate("ctrl-x", "ˇ total: 0xff")            .await            .assert_matches();        cx.simulate("ctrl-x", "ˇ total: 0xFF")            .await            .assert_matches();        cx.simulate("ctrl-a", "(ˇ0b10f)").await.assert_matches();        cx.simulate("ctrl-a", "ˇ-1").await.assert_matches();        cx.simulate("ctrl-a", "banˇana").await.assert_matches();    }     #[gpui::test]    async fn test_increment_steps(cx: &mut gpui::TestAppContext) {        let mut cx = NeovimBackedTestContext::new(cx).await;         cx.set_shared_state(indoc! {"            ˇ1            1            1  2            1            1"})            .await;         cx.simulate_shared_keystrokes("j v shift-g g ctrl-a").await;        cx.shared_state().await.assert_eq(indoc! {"            1            ˇ2            3  2            4            5"});         cx.simulate_shared_keystrokes("shift-g ctrl-v g g").await;        cx.shared_state().await.assert_eq(indoc! {"            «1ˇ»            «2ˇ»            «3ˇ»  2            «4ˇ»            «5ˇ»"});         cx.simulate_shared_keystrokes("g ctrl-x").await;        cx.shared_state().await.assert_eq(indoc! {"            ˇ0            0            0  2            0            0"});    }}