From 4f9299b4639802e05e1cb27d8eb40305ff8e110e Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Mon, 11 Nov 2024 17:15:08 -0700
Subject: implement rule-specific macros for targets

---
 src/makefile/macro_scope.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/makefile/macro_scope.rs')

diff --git a/src/makefile/macro_scope.rs b/src/makefile/macro_scope.rs
index ba9b6cf..c03870f 100644
--- a/src/makefile/macro_scope.rs
+++ b/src/makefile/macro_scope.rs
@@ -43,6 +43,12 @@ impl<'a> MacroScope for LookupInternal<'a> {
     }
 }
 
+impl<T: MacroScope> MacroScope for Option<&T> {
+    fn get(&self, name: &str) -> Option<Cow<Macro>> {
+        self.as_ref().and_then(|value| value.get(name))
+    }
+}
+
 // warning on undefined macros is useful but can get repetitive fast
 lazy_static! {
     static ref WARNINGS_EMITTED: RwLock<HashSet<String>> = Default::default();
-- 
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