Merge pull request #1308 from crytic/dev-contract-kind

Fix contract_kind

slither/solc_parsing/declarations/contract.py

@@ -157,7 +157,7 @@ class ContractSolc(CallerContextExpression):
         if "contractKind" in attributes:
             if attributes["contractKind"] == "interface":
                 self._contract.is_interface = True
-            self._contract.kind = attributes["contractKind"]
+            self._contract.contract_kind = attributes["contractKind"]
         self._linearized_base_contracts = attributes["linearizedBaseContracts"]
         # self._contract.fullyImplemented = attributes["fullyImplemented"]
 

slither/tools/flattening/flattening.py

@@ -111,7 +111,7 @@ class Flattening:
 
         to_patch = []
         # interface must use external
-        if self._external_to_public and contract.contract_kind != "interface":
+        if self._external_to_public and not contract.is_interface:
             for f in contract.functions_declared:
                 # fallback must be external
                 if f.is_fallback or f.is_constructor_variables: