Rewrite parser

.pre-commit-config.yaml

@@ -14,7 +14,9 @@ repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.1.0
     hooks:
-    -   id: trailing-whitespace
+    # disabled because it goes in the way when testing
+    # gherkin files with weird whitespaces on purpose
+    # -   id: trailing-whitespace
     -   id: end-of-file-fixer
     -   id: check-yaml
     -   id: check-added-large-files

pytest_bdd/feature.py

@@ -52,7 +52,15 @@ def get_feature(base_path: str, filename: str, encoding: str = "utf-8") -> Featu
     full_name = os.path.abspath(os.path.join(base_path, filename))
     feature = features.get(full_name)
     if not feature:
-        feature = parse_feature(base_path, filename, encoding=encoding)
+        from pytest_bdd.scenario import get_from_ini
+
+        parser = get_from_ini("bdd_parser", "legacy")
+        if parser == "legacy":
+            feature = parse_feature(base_path, filename, encoding=encoding)
+        elif parser == "2020":
+            from . import new_parser
+
+            feature = new_parser.parse_feature(base_path, filename)
         features[full_name] = feature
     return feature
 

pytest_bdd/generation.py

@@ -117,7 +117,7 @@ def print_missing_code(scenarios: list[ScenarioTemplate], steps: list[Step]) ->
     tw.line()
 
     features = sorted(
-        {scenario.feature for scenario in scenarios}, key=lambda feature: feature.name or feature.filename
+        (scenario.feature for scenario in scenarios), key=lambda feature: feature.name or feature.filename
     )
     code = generate_code(features, scenarios, steps)
     tw.write(code)
@@ -152,7 +152,8 @@ def parse_feature_files(paths: list[str], **kwargs: Any) -> tuple[list[Feature],
         key=lambda scenario: (scenario.feature.name or scenario.feature.filename, scenario.name),
     )
     steps = sorted(
-        set(itertools.chain.from_iterable(scenario.steps for scenario in scenarios)), key=lambda step: step.name
+        (step for scenario in scenarios for step in scenario.steps),
+        key=lambda step: step.name,
     )
     return features, scenarios, steps