use unsafe blocks instead of mutexes

2 files changed, 28 insertions, 37 deletions

diff --git a/src/lua/mod.rs b/src/lua/mod.rs
index afa6171..e7c3352 100644
--- a/src/lua/mod.rs
+++ b/src/lua/mod.rs
@@ -1,10 +1,6 @@
-use std::{
-    path::Path,
-    sync::{Mutex, MutexGuard},
-};
-
-use lazy_static::lazy_static;
 use mlua::prelude::*;
+use once_cell::sync::Lazy;
+use std::{path::Path, ptr::addr_of_mut};
 
 use crate::{
     config::{
@@ -18,27 +14,8 @@ use crate::{
 pub mod evalsto;
 pub mod iobuffer;
 pub mod ownedfunction;
-pub mod runtime;
 pub mod runnable;
-
-lazy_static! {
-    static ref LUA: Mutex<Lua> = {
-        let lock = Mutex::new(Lua::new());
-
-        {
-            let lua = lock.lock().unwrap();
-
-            let print_binding = lua.create_function(print).unwrap();
-            lua.globals().set("print", print_binding).unwrap();
-
-            runtime::math(&lua).unwrap();
-            runtime::neosheet(&lua).unwrap();
-            runtime::package(&lua).unwrap();
-        }
-
-        lock
-    };
-}
+pub mod runtime;
 
 macro_rules! ud_is_type {
     ($writer:ident, $ud:ident, $f:ty => $fe:expr $(, $($r:ty => $e:expr),+)? $(,)?) => {
@@ -61,11 +38,11 @@ fn print(_: &Lua, args: LuaMultiValue) -> LuaResult<()> {
                 writer,
                 ud,
                 CellRef => ud.borrow::<CellRef>(),
-                GlobalConfig => GlobalConfig::instance(),
-                Theme => GlobalConfig::instance().theme,
-                SheetViewTheme => GlobalConfig::instance().theme.view,
-                GlobalState => GlobalState::instance(),
-                SheetViewState => GlobalState::instance().view,
+                GlobalConfig => GlobalConfig::get(),
+                Theme => GlobalConfig::get().theme,
+                SheetViewTheme => GlobalConfig::get().theme.view,
+                GlobalState => GlobalState::get(),
+                SheetViewState => GlobalState::get().view,
             );
         } else {
             writer.write(format!("{:#?}", arg));
@@ -79,8 +56,22 @@ fn print(_: &Lua, args: LuaMultiValue) -> LuaResult<()> {
     Ok(())
 }
 
-pub fn get() -> MutexGuard<'static, Lua> {
-    LUA.lock().unwrap()
+pub fn get() -> &'static mut Lazy<Lua> {
+    static mut LUA: Lazy<Lua> = Lazy::new(|| {
+        let lua = Lua::new();
+
+        let print_binding = lua.create_function(print).unwrap();
+        lua.globals().set("print", print_binding).unwrap();
+
+        runtime::math(&lua).unwrap();
+        runtime::neosheet(&lua).unwrap();
+        runtime::package(&lua).unwrap();
+
+        lua
+    });
+
+
+    unsafe { &mut *addr_of_mut!(LUA) }
 }
 
 pub fn source(path: &str) -> LuaResult<()> {
diff --git a/src/lua/runtime.rs b/src/lua/runtime.rs
index 6a0a230..71bf21a 100644
--- a/src/lua/runtime.rs
+++ b/src/lua/runtime.rs
@@ -50,10 +50,10 @@ pub fn package(lua: &Lua) -> Result<()> {
         "path",
         format!(
             "{}/?.lua;{}/?/init.lua;{}/lib/?.lua;{}/lib/?/init.lua;{};./?.lua",
-            config::constants::USER_CONFIG_DIR.as_str(),
-            config::constants::USER_CONFIG_DIR.as_str(),
-            config::constants::USER_CONFIG_DIR.as_str(),
-            config::constants::USER_CONFIG_DIR.as_str(),
+            config::env::USER_CONFIG_DIR.as_str(),
+            config::env::USER_CONFIG_DIR.as_str(),
+            config::env::USER_CONFIG_DIR.as_str(),
+            config::env::USER_CONFIG_DIR.as_str(),
             path.split(';')
                 .filter(|s| s.starts_with('/'))
                 .collect::<Vec<&str>>()