Switch default parser to cfparse

pytest_bdd/parsers.py

@@ -2,12 +2,27 @@
 
 
 import re as base_re
+import sys
+import typing
 from functools import partial
+from typing import Union
 
 import parse as base_parse
 from parse_type import cfparse as base_cfparse
 
 
+class StepParserProtocol(typing.Protocol if sys.version_info >= (3, 8) else object):
+    def parse_arguments(self, name):
+        ...
+
+    def is_matching(self, name):
+        ...
+
+    @property
+    def name(self):
+        ...
+
+
 class StepParser:
     """Parser of the individual step."""
 
@@ -98,7 +113,7 @@ def is_matching(self, name):
         return self.name == name
 
 
-def get_parser(step_name):
+def get_parser(step_name: Union[str, StepParser, StepParserProtocol]) -> Union[StepParser, StepParserProtocol]:
     """Get parser by given name.
 
     :param step_name: name of the step to parse
@@ -108,9 +123,9 @@ def get_parser(step_name):
     """
 
     def does_support_parser_interface(obj):
-        return all(map(partial(hasattr, obj), ["is_matching", "parse_arguments"]))
+        return all(map(partial(hasattr, obj), ["name", "is_matching", "parse_arguments"]))
 
     if does_support_parser_interface(step_name):
         return step_name
     else:
-        return string(step_name)
+        return cfparse(step_name)