From 1e547b7f1e431bb42c80073ea9098f5973474b5b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=A0=91=E5=BD=B1?= <15079462244@163.com>
Date: Mon, 9 Dec 2024 16:49:36 +0800
Subject: [PATCH] Supports parsing macro expansion as a function branch

---
 apps/els_lsp/src/els_parser.erl | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/apps/els_lsp/src/els_parser.erl b/apps/els_lsp/src/els_parser.erl
index 943f06e7..a4aae170 100644
--- a/apps/els_lsp/src/els_parser.erl
+++ b/apps/els_lsp/src/els_parser.erl
@@ -797,7 +797,13 @@ analyze_function(FunName, Clauses0) ->
 
 -spec function_args(tree()) -> {arity(), els_arg:args()}.
 function_args(Clause) ->
-    Patterns = erl_syntax:clause_patterns(Clause),
+    Patterns =
+        case Clause of
+            {_, macro, _, _} ->
+                erl_syntax:macro_arguments(Clause);
+            _ ->
+                erl_syntax:clause_patterns(Clause)
+        end,
     Arity = length(Patterns),
     Args = args_from_subtrees(Patterns),
     {Arity, Args}.