From 2c2b277b29f8cddf4c028313e314806651b52fc1 Mon Sep 17 00:00:00 2001
From: Chris Wanstrath <2+defunkt@users.noreply.github.com>
Date: Tue, 25 Nov 2025 16:08:14 -0800
Subject: [PATCH] `throw` takes an expression

---
 src/parser/parser2.ts               |  2 +-
 src/parser/tests/exceptions.test.ts | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/parser/parser2.ts b/src/parser/parser2.ts
index c978109..50a453d 100644
--- a/src/parser/parser2.ts
+++ b/src/parser/parser2.ts
@@ -729,7 +729,7 @@ export class Parser {
   // throw blah
   throw(): SyntaxNode {
     const keyword = this.keyword('throw')
-    const val = this.value()
+    const val = this.expression()
     const node = new SyntaxNode('Throw', keyword.from, val.to)
     return node.push(keyword, val)
   }
diff --git a/src/parser/tests/exceptions.test.ts b/src/parser/tests/exceptions.test.ts
index e89c80e..a0708f9 100644
--- a/src/parser/tests/exceptions.test.ts
+++ b/src/parser/tests/exceptions.test.ts
@@ -139,6 +139,18 @@ describe('try/catch/finally/throw', () => {
     `)
   })
 
+  test('parses throw statement with BinOp', () => {
+    expect("throw 'error message:' + msg").toMatchTree(`
+      Throw
+        keyword throw
+        BinOp
+          String
+            StringFragment error message:
+          Plus +
+          Identifier msg
+    `)
+  })
+
   test('parses throw statement with identifier', () => {
     expect('throw error-object').toMatchTree(`
       Throw