in progress

crates/vim/src/motion.rs

@@ -3,7 +3,7 @@ use editor::{
     display_map::{DisplaySnapshot, ToDisplayPoint},
     movement, Bias, CharKind, DisplayPoint,
 };
-use gpui::{actions, impl_actions, keymap_matcher::KeyPressed, MutableAppContext};
+use gpui::{actions, impl_actions, MutableAppContext};
 use language::{Point, Selection, SelectionGoal};
 use serde::Deserialize;
 use workspace::Workspace;
@@ -109,27 +109,6 @@ pub fn init(cx: &mut MutableAppContext) {
          &PreviousWordStart { ignore_punctuation }: &PreviousWordStart,
          cx: _| { motion(Motion::PreviousWordStart { ignore_punctuation }, cx) },
     );
-    cx.add_action(
-        |_: &mut Workspace, KeyPressed { keystroke }: &KeyPressed, cx| match Vim::read(cx)
-            .active_operator()
-        {
-            Some(Operator::FindForward { before }) => motion(
-                Motion::FindForward {
-                    before,
-                    character: keystroke.key.chars().next().unwrap(),
-                },
-                cx,
-            ),
-            Some(Operator::FindBackward { after }) => motion(
-                Motion::FindBackward {
-                    after,
-                    character: keystroke.key.chars().next().unwrap(),
-                },
-                cx,
-            ),
-            _ => cx.propagate_action(),
-        },
-    )
 }
 
 pub(crate) fn motion(motion: Motion, cx: &mut MutableAppContext) {

crates/vim/src/normal.rs

@@ -424,6 +424,25 @@ fn scroll(editor: &mut Editor, amount: &ScrollAmount, cx: &mut ViewContext<Edito
     }
 }
 
+pub(crate) fn normal_replace(text: &str, cx: &mut MutableAppContext) {
+    Vim::update(cx, |vim, cx| {
+        vim.update_active_editor(cx, |editor, cx| {
+            editor.transact(cx, |editor, cx| {
+                editor.set_clip_at_line_ends(false, cx);
+                editor.change_selections(None, cx, |s| {
+                    s.move_with(|map, selection| {
+                        *selection.end.column_mut() += 1;
+                        selection.end = map.clip_point(selection.end, Bias::Right);
+                    });
+                });
+                editor.insert(text, cx);
+                editor.set_clip_at_line_ends(true, cx);
+            });
+        });
+        vim.pop_operator(cx)
+    });
+}
+
 #[cfg(test)]
 mod test {
     use indoc::indoc;

crates/vim/src/state.rs

@@ -28,6 +28,7 @@ pub enum Operator {
     Change,
     Delete,
     Yank,
+    Replace,
     Object { around: bool },
     FindForward { before: bool },
     FindBackward { after: bool },
@@ -117,6 +118,7 @@ impl Operator {
             Operator::Change => "c",
             Operator::Delete => "d",
             Operator::Yank => "y",
+            Operator::Replace => "r",
             Operator::FindForward { before: false } => "f",
             Operator::FindForward { before: true } => "t",
             Operator::FindBackward { after: false } => "F",
@@ -127,7 +129,9 @@ impl Operator {
     pub fn context_flags(&self) -> &'static [&'static str] {
         match self {
             Operator::Object { .. } => &["VimObject"],
-            Operator::FindForward { .. } | Operator::FindBackward { .. } => &["VimWaiting"],
+            Operator::FindForward { .. } | Operator::FindBackward { .. } | Operator::Replace => {
+                &["VimWaiting"]
+            }
             _ => &[],
         }
     }

crates/vim/src/vim.rs

@@ -13,11 +13,18 @@ mod visual;
 use collections::HashMap;
 use command_palette::CommandPaletteFilter;
 use editor::{Bias, Cancel, Editor};
-use gpui::{impl_actions, MutableAppContext, Subscription, ViewContext, WeakViewHandle};
+use gpui::{
+    impl_actions,
+    keymap_matcher::{KeyPressed, Keystroke},
+    MutableAppContext, Subscription, ViewContext, WeakViewHandle,
+};
 use language::CursorShape;
+use motion::Motion;
+use normal::normal_replace;
 use serde::Deserialize;
 use settings::Settings;
 use state::{Mode, Operator, VimState};
+use visual::visual_replace;
 use workspace::{self, Workspace};
 
 #[derive(Clone, Deserialize, PartialEq)]
@@ -51,6 +58,11 @@ pub fn init(cx: &mut MutableAppContext) {
     cx.add_action(|_: &mut Workspace, n: &Number, cx: _| {
         Vim::update(cx, |vim, cx| vim.push_number(n, cx));
     });
+    cx.add_action(
+        |_: &mut Workspace, KeyPressed { keystroke }: &KeyPressed, cx| {
+            Vim::key_pressed(keystroke, cx);
+        },
+    );
 
     // Editor Actions
     cx.add_action(|_: &mut Editor, _: &Cancel, cx| {
@@ -208,6 +220,27 @@ impl Vim {
         self.state.operator_stack.last().copied()
     }
 
+    fn key_pressed(keystroke: &Keystroke, cx: &mut ViewContext<Workspace>) {
+        match Vim::read(cx).active_operator() {
+            Some(Operator::FindForward { before }) => {
+                if let Some(character) = keystroke.key.chars().next() {
+                    motion::motion(Motion::FindForward { before, character }, cx)
+                }
+            }
+            Some(Operator::FindBackward { after }) => {
+                if let Some(character) = keystroke.key.chars().next() {
+                    motion::motion(Motion::FindBackward { after, character }, cx)
+                }
+            }
+            Some(Operator::Replace) => match Vim::read(cx).state.mode {
+                Mode::Normal => normal_replace(&keystroke.key, cx),
+                Mode::Visual { line } => visual_replace(&keystroke.key, line, cx),
+                _ => Vim::update(cx, |vim, cx| vim.clear_operator(cx)),
+            },
+            _ => cx.propagate_action(),
+        }
+    }
+
     fn set_enabled(&mut self, enabled: bool, cx: &mut MutableAppContext) {
         if self.enabled != enabled {
             self.enabled = enabled;

crates/vim/src/visual.rs

@@ -313,6 +313,40 @@ pub fn paste(_: &mut Workspace, _: &VisualPaste, cx: &mut ViewContext<Workspace>
     });
 }
 
+pub(crate) fn visual_replace(text: &str, line: bool, cx: &mut MutableAppContext) {
+    Vim::update(cx, |vim, cx| {
+        vim.update_active_editor(cx, |editor, cx| {
+            editor.transact(cx, |editor, cx| {
+                let (display_map, selections) = editor.selections.all_adjusted_display(cx);
+                let mut new_selections = Vec::new();
+                editor.buffer().update(cx, |buffer, cx| {
+                    let mut edits = Vec::new();
+                    for selection in selections.iter() {
+                        let mut selection = selection.clone();
+                        if !line && !selection.reversed {
+                            // Head is at the end of the selection. Adjust the end position to
+                            // to include the character under the cursor.
+                            *selection.end.column_mut() = selection.end.column() + 1;
+                            selection.end = display_map.clip_point(selection.end, Bias::Right);
+                        }
+
+                        let range = selection
+                            .map(|p| p.to_offset(&display_map, Bias::Right))
+                            .range();
+                        new_selections.push(range.start..range.start);
+                        let text = text.repeat(range.len());
+                        edits.push((range, text));
+                    }
+
+                    buffer.edit(edits, None, cx);
+                });
+                editor.change_selections(None, cx, |s| s.select_ranges(new_selections));
+            });
+        });
+        vim.pop_operator(cx)
+    });
+}
+
 #[cfg(test)]
 mod test {
     use indoc::indoc;