roblox_emulator: implement EnumItem.__eq

lib/roblox_emulator/src/runner/enum.rs

@@ -23,6 +23,17 @@ impl From<EnumItem<'_>> for rbx_types::Enum{
 		rbx_types::Enum::from_u32(e.value)
 	}
 }
+impl PartialEq for EnumItem<'_>{
+	fn eq(&self,other:&EnumItem<'_>)->bool{
+		self.value==other.value&&{
+			// if both names are known, they must match, otherwise whatever
+			match (self.name,other.name){
+				(Some(lhs),Some(rhs))=>lhs==rhs,
+				_=>true,
+			}
+		}
+	}
+}
 
 #[derive(Clone,Copy)]
 pub struct Enums;
@@ -69,7 +80,10 @@ impl mlua::UserData for EnumItem<'_>{
 		fields.add_field_method_get("Name",|_,this|Ok(this.name));
 		fields.add_field_method_get("Value",|_,this|Ok(this.value));
 	}
-	fn add_methods<M:mlua::UserDataMethods<Self>>(_methods:&mut M){
+	fn add_methods<M:mlua::UserDataMethods<Self>>(methods:&mut M){
+		methods.add_meta_function(mlua::MetaMethod::Eq,|_,(lhs,rhs):(EnumItem<'_>,EnumItem<'_>)|{
+			Ok(lhs==rhs)
+		});
 	}
 }
 type_from_lua_userdata_lua_lifetime!(EnumItem);