🚨 fix linting warning (rule B019)

eth_abi/grammar.py

@@ -44,6 +44,9 @@ class NodeVisitor(parsimonious.NodeVisitor):  # type: ignore[misc] # subclasses
     post-processing of parse trees.  Parsing operations are cached.
     """
 
+    def __init__(self):
+        self.parse = functools.lru_cache(maxsize=None)(self._parse_uncached)
+
     grammar = grammar
 
     def visit_non_zero_tuple(self, node, visited_children):
@@ -103,8 +106,7 @@ def generic_visit(self, node, visited_children):
 
         return tuple(visited_children)
 
-    @functools.lru_cache(maxsize=None)  # noqa: B019
-    def parse(self, type_str, **kwargs):
+    def _parse_uncached(self, type_str, **kwargs):
         """
         Parses a type string into an appropriate instance of
         :class:`~eth_abi.grammar.ABIType`.  If a type string cannot be parsed,

eth_abi/registry.py

@@ -344,6 +344,8 @@ class ABIRegistry(Copyable, BaseRegistry):
     def __init__(self):
         self._encoders = PredicateMapping("encoder registry")
         self._decoders = PredicateMapping("decoder registry")
+        self.get_encoder = functools.lru_cache(maxsize=None)(self._get_encoder_uncached)
+        self.get_decoder = functools.lru_cache(maxsize=None)(self._get_decoder_uncached)
 
     def _get_registration(self, mapping, type_str):
         coder = super()._get_registration(mapping, type_str)
@@ -451,8 +453,7 @@ def unregister(self, label: Optional[str]) -> None:
         self.unregister_encoder(label)
         self.unregister_decoder(label)
 
-    @functools.lru_cache(maxsize=None)  # noqa: B019
-    def get_encoder(self, type_str):
+    def _get_encoder_uncached(self, type_str):
         return self._get_registration(self._encoders, type_str)
 
     def has_encoder(self, type_str: abi.TypeStr) -> bool:
@@ -471,8 +472,7 @@ def has_encoder(self, type_str: abi.TypeStr) -> bool:
 
         return True
 
-    @functools.lru_cache(maxsize=None)  # noqa: B019
-    def get_decoder(self, type_str, strict=True):
+    def _get_decoder_uncached(self, type_str, strict=True):
         decoder = self._get_registration(self._decoders, type_str)
 
         if hasattr(decoder, "is_dynamic") and decoder.is_dynamic: