From 1c3c93d727c3bb833b224b062fd1f20eb085f962 Mon Sep 17 00:00:00 2001
From: Amaan Qureshi <amaanq12@gmail.com>
Date: Sun, 14 Apr 2024 15:32:20 -0400
Subject: [PATCH] feat: support pure virtual destructors

---
 grammar.js                  |  5 ++++-
 test/corpus/definitions.txt | 11 +++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/grammar.js b/grammar.js
index c217312..9f3b6e9 100644
--- a/grammar.js
+++ b/grammar.js
@@ -497,6 +497,7 @@ module.exports = grammar(C, {
         field('body', choice($.compound_statement, $.try_statement)),
         $.default_method_clause,
         $.delete_method_clause,
+        $.pure_virtual_clause,
       ),
     ),
 
@@ -542,6 +543,7 @@ module.exports = grammar(C, {
         alias($.constructor_try_statement, $.try_statement),
         $.default_method_clause,
         $.delete_method_clause,
+        $.pure_virtual_clause,
       ),
     ),
 
@@ -553,6 +555,7 @@ module.exports = grammar(C, {
 
     default_method_clause: _ => seq('=', 'default', ';'),
     delete_method_clause: _ => seq('=', 'delete', ';'),
+    pure_virtual_clause: _ => seq('=', '0', ';'),
 
     friend_declaration: $ => seq(
       'friend',
@@ -1170,7 +1173,7 @@ module.exports = grammar(C, {
       ];
 
       return choice(
-        ...original.members,
+        original,
         ...table.map(([operator, precedence]) => {
           return prec.left(precedence, seq(
             field('left', $._expression),
diff --git a/test/corpus/definitions.txt b/test/corpus/definitions.txt
index bf76367..bc35c2a 100644
--- a/test/corpus/definitions.txt
+++ b/test/corpus/definitions.txt
@@ -179,7 +179,7 @@ class C {
               (identifier))))))))
 
 ================================================================================
-Default and deleted methods
+Default, delete, and pure virtual methods
 ================================================================================
 
 class A : public B {
@@ -188,6 +188,7 @@ class A : public B {
   void f() = delete;
   A& operator=(const A&) = default;
   A& operator=(A&&) = delete;
+  ~A() = 0;
 };
 
 --------------------------------------------------------------------------------
@@ -238,7 +239,13 @@ class A : public B {
               (parameter_declaration
                 (type_identifier)
                 (abstract_reference_declarator)))))
-        (delete_method_clause)))))
+        (delete_method_clause))
+      (function_definition
+        (function_declarator
+          (destructor_name
+            (identifier))
+          (parameter_list))
+        (pure_virtual_clause)))))
 
 ================================================================================
 Destructor definitions