use unsafe blocks instead of mutexes

2 files changed, 13 insertions, 27 deletions

diff --git a/src/state/view/bar.rs b/src/state/view/bar.rs
index 57898f5..f935de7 100644
--- a/src/state/view/bar.rs
+++ b/src/state/view/bar.rs
@@ -5,6 +5,5 @@ use super::mode::Mode;
 BarState!(
     SheetViewBarState,
     Mode,
-    GlobalState::instance().view.bar,
-    GlobalState::instance_mut().view.bar
+    GlobalState::get().view.bar
 );
diff --git a/src/state/view/mod.rs b/src/state/view/mod.rs
index 961c4ca..41937a1 100644
--- a/src/state/view/mod.rs
+++ b/src/state/view/mod.rs
@@ -1,5 +1,3 @@
-use std::sync::{Arc, RwLock};
-
 use mlua::{IntoLua, UserData, Value};
 
 use self::{bar::SheetViewBarState, mode::Mode};
@@ -37,24 +35,19 @@ impl SheetViewState {
         }
     }
 
-    pub fn set_active_sheet(&mut self, sheet: Option<SheetId>) {
-        if let Some(id) = sheet {
-            if let Some(lock) = Register::get(id) {
-                let sheet = lock.read().unwrap();
+    pub fn set_active_sheet(&mut self, active: Option<SheetId>) {
+        if let Some(id) = active {
+            if let Some(sheet) = Register::get(id) {
                 self.cursor.set_x_max(sheet.width() - 1);
                 self.cursor.set_y_max(sheet.height() - 1);
             }
         }
 
-        self.active_sheet = sheet
+        self.active_sheet = active
     }
 
-    pub fn active_sheet(&self) -> Option<Arc<RwLock<Sheet>>> {
-        if let Some(id) = self.active_sheet {
-            Register::get(id)
-        } else {
-            None
-        }
+    pub fn active_sheet(&self) -> Option<&'static mut Sheet> {
+        Register::get(self.active_sheet?)
     }
 
     pub fn cancel_mode(&mut self) {
@@ -121,13 +114,7 @@ impl SheetViewState {
 
 macro_rules! cfg {
     () => {
-        GlobalState::instance().view
-    };
-}
-
-macro_rules! cfg_mut {
-    () => {
-        GlobalState::instance_mut().view
+        GlobalState::get().view
     };
 }
 
@@ -143,9 +130,9 @@ impl UserData for SheetViewState {
 
         fields.add_field_function_set("active", |_, _, sheet: Option<SheetLuaRef>| {
             if let Some(r) = sheet {
-                cfg_mut!().active_sheet = Some(r.id())
+                cfg!().active_sheet = Some(r.id())
             } else {
-                cfg_mut!().active_sheet = None
+                cfg!().active_sheet = None
             }
 
             Ok(())
@@ -160,7 +147,7 @@ impl UserData for SheetViewState {
 
         fields.add_field_function_get("mode", |_, _| Ok(cfg!().mode));
         fields.add_field_function_set("mode", |_, _, mode: Mode| {
-            let this = &mut cfg_mut!();
+            let this = &mut cfg!();
             match mode {
                 Mode::Visual => match this.mode {
                     Mode::Visual => {}
@@ -177,12 +164,12 @@ impl UserData for SheetViewState {
 
     fn add_methods<'lua, M: mlua::prelude::LuaUserDataMethods<'lua, Self>>(methods: &mut M) {
         methods.add_function("move_cursor", |_, m: CursorMove| {
-            cfg_mut!().cursor.move_checked(m);
+            cfg!().cursor.move_checked(m);
             Ok(())
         });
 
         methods.add_function("cancel_mode", |_, _: ()| {
-            cfg_mut!().cancel_mode();
+            cfg!().cancel_mode();
             Ok(())
         })
     }