measurestack: Cache resolve_funcname()

1 files changed, 11 insertions, 1 deletions

diff --git a/build-aux/measurestack/analyze.py b/build-aux/measurestack/analyze.py
index b7b8b08..5b29841 100644
--- a/build-aux/measurestack/analyze.py
+++ b/build-aux/measurestack/analyze.py
@@ -174,7 +174,12 @@ class _Graph:
     graph: dict[QName, Node]
     qualified: dict[BaseName, QName]
 
-    def resolve_funcname(self, funcname: QName) -> QName | None:
+    _resolve_cache: dict[QName, QName | None]
+
+    def __init__(self) -> None:
+        self._resolve_cache = {}
+
+    def _resolve_funcname(self, funcname: QName) -> QName | None:
         s = str(funcname)
         is_qualified = ":" in s
 
@@ -198,6 +203,11 @@ class _Graph:
 
         return None
 
+    def resolve_funcname(self, funcname: QName) -> QName | None:
+        if funcname not in self._resolve_cache:
+            self._resolve_cache[funcname] = self._resolve_funcname(funcname)
+        return self._resolve_cache[funcname]
+
 
 def _make_graph(
     ci_fnames: typing.Collection[str],