From 41b117e50c97ab8117ff538d6cd8ff2ebed57c71 Mon Sep 17 00:00:00 2001
From: eileencodes <eileencodes@gmail.com>
Date: Tue, 5 Dec 2023 12:07:26 -0500
Subject: [PRISM] Implement `PM_SOURCE_ENCODING_NODE` for `defined?

Ruby code:

```ruby
defined?(__ENCODING__)
```

Instructions:

```
"********* Ruby *************"
== disasm: #<ISeq:<compiled>@<compiled>:0 (0,0)-(0,22)>
0000 putobject                              "expression"
0002 leave

"********* PRISM *************"
== disasm: #<ISeq:<compiled>@<compiled>:0 (0,0)-(0,22)>
0000 putobject                              "expression"
0002 leave
```
---
 test/ruby/test_compile_prism.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index f2962dc3c7..3cad58a184 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -110,6 +110,7 @@ module Prism
       assert_prism_eval("defined? -> { 1 + 1 }")
       assert_prism_eval("defined? a && b")
       assert_prism_eval("defined? a || b")
+      assert_prism_eval("defined? __ENCODING__")
 
       assert_prism_eval("defined? %[1,2,3]")
       assert_prism_eval("defined? %q[1,2,3]")
-- 
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