Allow actions to be deserialized from JSON

Introduce separate macro for implementing 'internal' actions which
are not intended to be loaded from keymaps.

crates/vim/Cargo.toml

@@ -12,6 +12,7 @@ collections = { path = "../collections" }
 editor = { path = "../editor" }
 gpui = { path = "../gpui" }
 language = { path = "../language" }
+serde = { version = "1", features = ["derive"] }
 settings = { path = "../settings" }
 workspace = { path = "../workspace" }
 log = "0.4"

crates/vim/src/mode.rs

@@ -1,7 +1,8 @@
 use editor::CursorShape;
 use gpui::keymap::Context;
+use serde::Deserialize;
 
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize)]
 pub enum Mode {
     Normal(NormalState),
     Insert,
@@ -44,7 +45,7 @@ impl Default for Mode {
     }
 }
 
-#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize)]
 pub enum NormalState {
     None,
     GPrefix,

crates/vim/src/normal.rs

@@ -4,15 +4,16 @@ use crate::{mode::NormalState, Mode, SwitchMode, VimState};
 use editor::{char_kind, movement, Bias};
 use gpui::{actions, impl_actions, keymap::Binding, MutableAppContext, ViewContext};
 use language::SelectionGoal;
+use serde::Deserialize;
 use workspace::Workspace;
 
-#[derive(Clone)]
+#[derive(Clone, Deserialize)]
 struct MoveToNextWordStart(pub bool);
 
-#[derive(Clone)]
+#[derive(Clone, Deserialize)]
 struct MoveToNextWordEnd(pub bool);
 
-#[derive(Clone)]
+#[derive(Clone, Deserialize)]
 struct MoveToPreviousWordStart(pub bool);
 
 impl_actions!(

crates/vim/src/vim.rs

@@ -8,12 +8,13 @@ mod vim_test_context;
 use collections::HashMap;
 use editor::{CursorShape, Editor};
 use gpui::{impl_actions, MutableAppContext, ViewContext, WeakViewHandle};
+use serde::Deserialize;
 
 use mode::Mode;
 use settings::Settings;
 use workspace::{self, Workspace};
 
-#[derive(Clone)]
+#[derive(Clone, Deserialize)]
 pub struct SwitchMode(pub Mode);
 
 impl_actions!(vim, [SwitchMode]);