Repo checks: skip docstring checks if not in the diff (#32328)

* tmp

* skip files not in the diff

* use git.Repo instead of an external subprocess

* add tiny change to confirm that the diff is working on pushed changes

* add make quality task

* more profesh main commit reference

.circleci/config.yml

@@ -142,6 +142,7 @@ jobs:
             - run: python utils/custom_init_isort.py --check_only
             - run: python utils/sort_auto_mappings.py --check_only
             - run: python utils/check_doc_toc.py
+            - run: python utils/check_docstrings.py --check_all
 
     check_repository_consistency:
         working_directory: ~/transformers

Makefile

@@ -56,6 +56,7 @@ quality:
 	python utils/custom_init_isort.py --check_only
 	python utils/sort_auto_mappings.py --check_only
 	python utils/check_doc_toc.py
+	python utils/check_docstrings.py --check_all
 
 
 # Format source code automatically and check is there are any problems left that need manual fixing

src/transformers/cache_utils.py

@@ -112,6 +112,7 @@ class CacheConfig:
         Args:
             config_dict (Dict[str, Any]): Dictionary containing configuration parameters.
             **kwargs: Additional keyword arguments to override dictionary values.
+
         Returns:
             CacheConfig: Instance of CacheConfig constructed from the dictionary.
         """

utils/check_docstrings.py

@@ -43,10 +43,12 @@ from pathlib import Path
 from typing import Any, Optional, Tuple, Union
 
 from check_repo import ignore_undocumented
+from git import Repo
 
 from transformers.utils import direct_transformers_import
 
 
+PATH_TO_REPO = Path(__file__).parent.parent.resolve()
 PATH_TO_TRANSFORMERS = Path("src").resolve() / "transformers"
 
 # This is to make sure the transformers module imported is the one in the repo.
@@ -943,14 +945,33 @@ def fix_docstring(obj: Any, old_doc_args: str, new_doc_args: str):
         f.write("\n".join(lines))
 
 
-def check_docstrings(overwrite: bool = False):
+def check_docstrings(overwrite: bool = False, check_all: bool = False):
     """
-    Check docstrings of all public objects that are callables and are documented.
+    Check docstrings of all public objects that are callables and are documented. By default, only checks the diff.
 
     Args:
         overwrite (`bool`, *optional*, defaults to `False`):
             Whether to fix inconsistencies or not.
+        check_all (`bool`, *optional*, defaults to `False`):
+            Whether to check all files.
     """
+    module_diff_files = None
+    if not check_all:
+        module_diff_files = set()
+        repo = Repo(PATH_TO_REPO)
+        # Diff from index to unstaged files
+        for modified_file_diff in repo.index.diff(None):
+            if modified_file_diff.a_path.startswith("src/transformers"):
+                module_diff_files.add(modified_file_diff.a_path)
+        # Diff from index to `main`
+        for modified_file_diff in repo.index.diff(repo.refs.main.commit):
+            if modified_file_diff.a_path.startswith("src/transformers"):
+                module_diff_files.add(modified_file_diff.a_path)
+        # quick escape route: if there are no module files in the diff, skip this check
+        if len(module_diff_files) == 0:
+            return
+        print("    Checking docstrings in the following files:" + "\n    - " + "\n    - ".join(module_diff_files))
+
     failures = []
     hard_failures = []
     to_clean = []
@@ -963,6 +984,13 @@ def check_docstrings(overwrite: bool = False):
         if not callable(obj) or not isinstance(obj, type) or getattr(obj, "__doc__", None) is None:
             continue
 
+        # If we are checking against the diff, we skip objects that are not part of the diff.
+        if module_diff_files is not None:
+            object_file = find_source_file(getattr(transformers, name))
+            object_file_relative_path = "src/" + str(object_file).split("/src/")[1]
+            if object_file_relative_path not in module_diff_files:
+                continue
+
         # Check docstring
         try:
             result = match_docstring_with_signature(obj)
@@ -1013,6 +1041,9 @@ def check_docstrings(overwrite: bool = False):
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
     parser.add_argument("--fix_and_overwrite", action="store_true", help="Whether to fix inconsistencies.")
+    parser.add_argument(
+        "--check_all", action="store_true", help="Whether to check all files. By default, only checks the diff"
+    )
     args = parser.parse_args()
 
-    check_docstrings(overwrite=args.fix_and_overwrite)
+    check_docstrings(overwrite=args.fix_and_overwrite, check_all=args.check_all)