vault abi from IVault

src/dexorder/contract/__init__.py

@@ -6,6 +6,12 @@ from .contract_proxy import ContractProxy
 
 
 def get_contract_data(name):
+    try:
+        # try the interface file first
+        with open(f'../contract/out/I{name}.sol/I{name}.json', 'rt') as file:
+            return json.load(file)
+    except FileNotFoundError:
+        # if no interface exists, use the plain name
         with open(f'../contract/out/{name}.sol/{name}.json', 'rt') as file:
             return json.load(file)