[py] Add bidi.py to define base classes for generated bidi classes

Author: jkim2492

py/selenium/webdriver/common/bidi/bidi.py

@@ -0,0 +1,59 @@
+# Licensed to the Software Freedom Conservancy (SFC) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The SFC licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+from dataclasses import dataclass
+from dataclasses import fields
+from dataclasses import is_dataclass
+from typing import get_type_hints
+
+
+@dataclass
+class BidiObject:
+    def to_json(self):
+        json = {}
+        for field in fields(self):
+            value = getattr(self, field.name)
+            if value is None:
+                continue
+            if is_dataclass(value):
+                value = value.to_json()
+            elif isinstance(value, list):
+                value = [v.to_json() if hasattr(v, "to_json") else v for v in value]
+            elif isinstance(value, dict):
+                value = {k: v.to_json() if hasattr(v, "to_json") else v for k, v in value.items()}
+            key = field.name[:-1] if field.name.endswith("_") else field.name
+            json[key] = value
+        return json
+
+    @classmethod
+    def from_json(cls, json):
+        return cls(**json)
+
+
+@dataclass
+class BidiEvent(BidiObject):
+    @classmethod
+    def from_json(cls, json):
+        params = get_type_hints(cls)["params"].from_json(json)
+        return cls(params)
+
+
+@dataclass
+class BidiCommand(BidiObject):
+    def cmd(self):
+        result = yield self.to_json()
+        return result