From 33bc22efe5d372898f3a37004f324f7457e9a944 Mon Sep 17 00:00:00 2001
From: eileencodes <eileencodes@gmail.com>
Date: Mon, 4 Dec 2023 15:10:12 -0500
Subject: [PATCH] [PRISM] Implement `PM_INTERPOLATED_STRING_NODE`

Implements `PM_INTERPOLATED_STRING_NODE` for `defined?`

Code:

```ruby
defined?("#{expr}")
```

```
"********* Ruby *************"
== disasm: #<ISeq:<compiled>@<compiled>:0 (0,0)-(0,19)>
0000 putobject                              "expression"
0002 leave

"********* PRISM *************"
== disasm: #<ISeq:<compiled>@<compiled>:0 (0,0)-(0,19)>
0000 putobject                              "expression"
0002 leave
```
---
 prism_compile.c                 | 1 +
 test/ruby/test_compile_prism.rb | 1 +
 2 files changed, 2 insertions(+)

diff --git a/prism_compile.c b/prism_compile.c
index 3c081cbafa..ad038a2ed6 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -1478,6 +1478,7 @@ pm_compile_defined_expr0(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *co
       case PM_FLOAT_NODE:
       case PM_HASH_NODE:
       case PM_INTEGER_NODE:
+      case PM_INTERPOLATED_STRING_NODE:
       case PM_LAMBDA_NODE:
       case PM_OR_NODE:
       case PM_RANGE_NODE:
diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index b6b1274ea8..e77051e383 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -102,6 +102,7 @@ module Prism
       assert_prism_eval("defined? [1, 2, 3]")
       assert_prism_eval("defined?({ a: 1 })")
       assert_prism_eval("defined? 'str'")
+      assert_prism_eval('defined?("#{expr}")')
       assert_prism_eval("defined? :sym")
       assert_prism_eval("defined? /foo/")
       assert_prism_eval("defined? -> { 1 + 1 }")