From 445ef28d7569b00e703be079fc0909968dc03f59 Mon Sep 17 00:00:00 2001
From: Alex Hoppen <ahoppen@apple.com>
Date: Fri, 17 Oct 2025 10:59:19 +0200
Subject: [PATCH] Minor cleanup from `if` to `guard` statement

I think the guard is a lot easier to read here, noticed while reviewing https://github.com/swiftlang/swift-syntax/pull/3171.
---
 Sources/SwiftParser/Lookahead.swift          |  2 +-
 Tests/SwiftParserTest/DeclarationTests.swift | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/Sources/SwiftParser/Lookahead.swift b/Sources/SwiftParser/Lookahead.swift
index 90748e2cd38..ff3b1a66b2f 100644
--- a/Sources/SwiftParser/Lookahead.swift
+++ b/Sources/SwiftParser/Lookahead.swift
@@ -266,7 +266,7 @@ extension Parser.Lookahead {
     }
 
     // If we don't have attributes, then it cannot be an accessor block.
-    if nextToken.rawTokenKind != .atSign {
+    guard self.peek(isAt: .atSign) else {
       return false
     }
 
diff --git a/Tests/SwiftParserTest/DeclarationTests.swift b/Tests/SwiftParserTest/DeclarationTests.swift
index 5818b008d85..44c95f9ed38 100644
--- a/Tests/SwiftParserTest/DeclarationTests.swift
+++ b/Tests/SwiftParserTest/DeclarationTests.swift
@@ -3831,4 +3831,16 @@ final class UsingDeclarationTests: ParserTestCase {
       )
     )
   }
+
+  func testAccessorBlockAfterPatternBindingDeclWithAttribute() {
+    assertParse(
+      """
+      var x: Int = foo()
+      {
+        @available(*, deprecated)
+        didSet {}
+      }
+      """
+    )
+  }
 }