From e8cefce6519df3d97136304e9d00e0a10a836276 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mart=C3=AD?= <mvdan@mvdan.cc>
Date: Wed, 19 Apr 2023 11:39:08 +0200
Subject: [PATCH] runtime: avoid extra indentation on Go switches

Unlike other languages, in Go, switches themselves are not indented;
it's just each case body which is indented by one level:

   switch foo {
   case "bar":
      baz()
   }

As such, we shouldn't @indent for type_switch_statement nor
expression_switch_statement, as otherwise inserted lines show up as:

   switch foo {
      // inserted with "o"
   case "bar":
         // inserted with "o"
      baz()
   }

With the fix, the inserted lines are indented properly:

   switch foo {
   // inserted with "o"
   case "bar":
      // inserted with "o"
      baz()
   }

I also verified that indentation on selects similarly works well.

Fixes #6772.
---
 runtime/queries/go/indents.scm | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/runtime/queries/go/indents.scm b/runtime/queries/go/indents.scm
index e439a9055fcaa..b2befab08ef01 100644
--- a/runtime/queries/go/indents.scm
+++ b/runtime/queries/go/indents.scm
@@ -14,8 +14,6 @@
   (argument_list)
   (field_declaration_list)
   (block)
-  (type_switch_statement)
-  (expression_switch_statement)
   (var_declaration)
 ] @indent
 
@@ -24,5 +22,19 @@
   ")"
 ] @outdent
 
-((_ "}" @outdent) @outer (#not-kind-eq? @outer "select_statement"))
-(communication_case) @extend
+; Switches and selects aren't indented, only their case bodies are.
+; Outdent all closing braces except those closing switches or selects.
+(
+    (_ "}" @outdent) @outer
+    (#not-kind-eq? @outer "select_statement")
+    (#not-kind-eq? @outer "type_switch_statement")
+    (#not-kind-eq? @outer "expression_switch_statement")
+)
+
+; Starting a line after a new case should indent.
+[
+  (communication_case)
+  (expression_case)
+  (default_case)
+  (type_case)
+] @extend