Merge branch 'pr_pydantic' into dev

elpy-rpc.el

@@ -229,8 +229,8 @@ needed packages from `elpy-rpc--get-package-list'."
   "Return the list of packages to be installed in the RPC virtualenv."
   (let ((rpc-python-version (elpy-rpc--get-python-version)))
     (if (version< rpc-python-version "3.6.0")
-        '("jedi" "flake8" "autopep8" "yapf")
-      '("jedi" "flake8" "autopep8" "yapf" "black"))))
+        '("jedi" "flake8" "autopep8" "yapf" "pydantic")
+      '("jedi" "flake8" "autopep8" "yapf" "black" "pydantic"))))
 
 (defun elpy-rpc--get-python-version ()
   "Return the RPC python version."

elpy/api.py

@@ -0,0 +1,36 @@
+from pathlib import Path
+from typing import Any, List, NamedTuple, NoReturn, Optional, Tuple, Union
+
+from pydantic import BaseModel
+
+
+class Result(BaseModel):
+    pass
+
+
+class ServerMsg(BaseModel):
+    pass
+
+
+class NameResult(Result):
+    name: str
+    offset: int
+    filename: str
+
+
+class RefactoringResult(Result):
+    success: bool
+    project_path: Path
+    diff: str
+    changed_files: List[Path]
+    error_msg: Optional[str]
+
+
+class ErrorMsg(ServerMsg):
+    id: int
+    error: Union[dict, Result]
+
+
+class ResponceMsg(ServerMsg):
+    id: int
+    result: Union[dict, List, str, Result]