redo error stuff

src/runner/runner.rs

@@ -12,17 +12,15 @@ pub enum Error{
 		source:String,
 		error:mlua::Error
 	},
+	RustLua(mlua::Error),
 	Script(super::instance::GetScriptError),
-	/// If the lua.remove_app_data function fails
-	RemoveAppData,
 }
-impl Error{
+impl std::fmt::Display for Error{
-	pub fn print(self){
+	fn fmt(&self,f:&mut std::fmt::Formatter<'_>)->std::fmt::Result{
 		match self{
-			Self::Lua{source,error:mlua::Error::RuntimeError(s)}=>{
+			Self::Lua{source,error:mlua::Error::RuntimeError(s)}=>write!(f,"lua error: {s}\nsource:{source}"),
-				println!("lua error: {s}\nsource:{source}");
+			Self::RustLua(mlua::Error::RuntimeError(s))=>write!(f,"rust-side lua error: {s}"),
-			},
+			other=>write!(f,"{other:?}"),
-			other=>println!("{:?}",other),
 		}
 	}
 }
@@ -72,16 +70,16 @@ fn init(lua:&mlua::Lua)->mlua::Result<()>{
 }
 
 impl Runner{
-	pub fn new()->mlua::Result<Self>{
+	pub fn new()->Result<Self,Error>{
 		let runner=Self{
 			lua:mlua::Lua::new(),
 		};
-		init(&runner.lua)?;
+		init(&runner.lua).map_err(Error::RustLua)?;
 		Ok(runner)
 	}
 	pub fn run_script(&self,script:super::instance::Script,context:&mut Context)->Result<(),Error>{
 		let (name,source)=script.get_name_source(context).map_err(Error::Script)?;
-		self.lua.globals().set("script",script).map_err(|error|Error::Lua{source:source.clone(),error})?;
+		self.lua.globals().set("script",script).map_err(Error::RustLua)?;
 		//this makes set_app_data shut up about the lifetime
 		self.lua.set_app_data::<&'static mut rbx_dom_weak::WeakDom>(unsafe{core::mem::transmute(&mut context.dom)});
 		let r=self.lua.load(source.as_str())