fix #1215 penetrate parentheses

Author: sumneko

changelog.md

@@ -1,5 +1,8 @@
 # changelog
 
+## 3.3.1
+* `FIX` [#1215](https://github.com/sumneko/lua-language-server/issues/1215)
+
 ## 3.3.0
 `2022-6-15`
 * `NEW` `LuaDoc` supports `` `CODE` ``

script/vm/runner.lua

@@ -294,6 +294,8 @@ function mt:_lookInto(action, topNode, outNode)
                 self:_lookInto(arg, topNode)
             end
         end
+    elseif action.type == 'paren' then
+        topNode, outNode = self:_lookInto(action.exp, topNode, outNode)
     else
         guide.eachSourceContain(action, top.finish, function(source)
             self:_lookInto(source, topNode)

test/type_inference/init.lua

@@ -2627,3 +2627,13 @@ if tp == 'integer' then
     print(<?x?>)
 end
 ]]
+
+TEST 'integer' [[
+---@type integer?
+local x
+
+if (x == nil) then
+else
+    print(<?x?>)
+end
+]]