fix: add interface type to golang treesitter backend (#180)

lua/aerial/backends/treesitter/language_kind_map.lua

@@ -35,6 +35,7 @@ return {
   },
   go = {
     function_declaration = "Function",
+    interface_type = "Interface",
     method_declaration = "Method",
     struct_type = "Struct",
   },

queries/go/aerial.scm

@@ -4,7 +4,7 @@
 (type_declaration
   (type_spec
     name: (type_identifier) @name
-    type: (struct_type) @type)) @start
+    type: [(struct_type) (interface_type)] @type)) @start
 
 (method_declaration
   name: (field_identifier) @name

tests/treesitter/go_spec.lua

@@ -30,6 +30,15 @@ describe("treesitter go", function()
         end_lnum = 7,
         end_col = 23,
       },
+      {
+        kind = "Interface",
+        name = "MyInterface",
+        level = 0,
+        lnum = 9,
+        col = 0,
+        end_lnum = 9,
+        end_col = 28,
+      },
     })
   end)
 end)

tests/treesitter/go_test.go

@@ -5,3 +5,5 @@ func fn_1() {}
 type st_1 struct{}
 
 func (st_1) Meth_1() {}
+
+type MyInterface interface{}