From d3c2fed4b30f039b0c2226bdaf2ed5b94b7aa161 Mon Sep 17 00:00:00 2001
From: Will Lillis <will.lillis24@gmail.com>
Date: Wed, 16 Jul 2025 00:27:18 -0400
Subject: [PATCH] fix(rust): correct indices for `Node::utf16_text`

---
 crates/cli/src/tests/text_provider_test.rs | 13 +++++++++++++
 lib/binding_rust/lib.rs                    |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/crates/cli/src/tests/text_provider_test.rs b/crates/cli/src/tests/text_provider_test.rs
index ffedc36b..d9ed454e 100644
--- a/crates/cli/src/tests/text_provider_test.rs
+++ b/crates/cli/src/tests/text_provider_test.rs
@@ -107,6 +107,19 @@ fn test_text_provider_for_arc_of_bytes_slice() {
     check_parsing(text.clone(), text.as_ref());
 }
 
+#[test]
+fn test_text_provider_for_vec_utf16_text() {
+    let source_text = "你好".encode_utf16().collect::<Vec<_>>();
+
+    let language = get_language("c");
+    let mut parser = Parser::new();
+    parser.set_language(&language).unwrap();
+    let tree = parser.parse_utf16_le(&source_text, None).unwrap();
+
+    let tree_text = tree.root_node().utf16_text(&source_text);
+    assert_eq!(source_text, tree_text);
+}
+
 #[test]
 fn test_text_provider_callback_with_str_slice() {
     let text: &str = "// comment";
diff --git a/lib/binding_rust/lib.rs b/lib/binding_rust/lib.rs
index a4cea362..f50c4495 100644
--- a/lib/binding_rust/lib.rs
+++ b/lib/binding_rust/lib.rs
@@ -2067,7 +2067,7 @@ impl<'tree> Node<'tree> {
 
     #[must_use]
     pub fn utf16_text<'a>(&self, source: &'a [u16]) -> &'a [u16] {
-        &source[self.start_byte()..self.end_byte()]
+        &source[self.start_byte() / 2..self.end_byte() / 2]
     }
 
     /// Create a new [`TreeCursor`] starting from this node.