From e7f5d6ea39479df93a858879a81cdd31cdb57130 Mon Sep 17 00:00:00 2001
From: Alex Manning <alex41290@gmail.com>
Date: Tue, 23 Apr 2024 11:22:39 -0400
Subject: [PATCH] support attributes without arguments (i.e. `@internal`) (#84)

---
 grammar.js                 |  2 +-
 test/corpus/attributes.txt | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/grammar.js b/grammar.js
index 4cf7cd4ef..96f12b7b7 100644
--- a/grammar.js
+++ b/grammar.js
@@ -62,7 +62,7 @@ module.exports = grammar({
       seq(
         "@",
         field("name", $.identifier),
-        field("arguments", alias($._attribute_arguments, $.arguments))
+        optional(field("arguments", alias($._attribute_arguments, $.arguments)))
       ),
 
     _attribute_arguments: ($) =>
diff --git a/test/corpus/attributes.txt b/test/corpus/attributes.txt
index d1e77aa37..a630f7a73 100644
--- a/test/corpus/attributes.txt
+++ b/test/corpus/attributes.txt
@@ -46,3 +46,22 @@ pub fn wibble() { todo }
     parameters: (function_parameters)
     body: (function_body
       (todo))))
+
+================================================================================
+Attribute without arguments
+================================================================================
+
+@internal
+pub fn wibble() { todo }
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (attribute
+    name: (identifier))
+  (function
+    (visibility_modifier)
+    name: (identifier)
+    parameters: (function_parameters)
+    body: (function_body
+      (todo))))