Remove incorrect assertions (#14204)

Author: AA-Turner

CHANGES.rst

@@ -28,6 +28,8 @@ Bugs fixed
   Patch by Adam Turner
 * #14089: autodoc: Fix default option parsing.
   Patch by Adam Turner
+* Remove incorrect static typing assertions.
+  Patch by Adam Turner
 
 Testing
 -------

sphinx/directives/__init__.py

@@ -215,7 +215,7 @@ def run(self) -> list[Node]:
         # note_source uses 0-based line numbers.
         if line is not None:
             line -= 1
-        self.state.document.note_source(source, line)
+        self.state.document.note_source(source, line)  # type: ignore[arg-type]
         node['domain'] = self.domain
         # 'desctype' is a backwards compatible attribute
         node['objtype'] = node['desctype'] = self.objtype

sphinx/ext/autodoc/directive.py

@@ -71,7 +71,7 @@ def __init__(
         env: BuildEnvironment,
         reporter: Reporter | None,
         options: Options,
-        lineno: int,
+        lineno: int | None,
         state: Any,
     ) -> None:
         self.env = env

sphinx/util/docutils.py

@@ -500,14 +500,12 @@ def config(self) -> Config:
         """
         return self.env.config
 
-    def get_source_info(self) -> tuple[str, int]:
+    def get_source_info(self) -> tuple[str | None, int | None]:
         """Get source and line number.
 
         .. versionadded:: 3.0
         """
         source, line = self.state_machine.get_source_and_line(self.lineno)
-        assert source is not None
-        assert line is not None
         return source, line
 
     def set_source_info(self, node: Node) -> None:
@@ -681,18 +679,20 @@ def config(self) -> Config:
         """
         return self.env.config
 
-    def get_source_info(self, lineno: int | None = None) -> tuple[str, int]:
+    def get_source_info(
+        self, lineno: int | None = None
+    ) -> tuple[str | os.PathLike[str] | None, int | None]:
         # .. versionadded:: 3.0
         if lineno is None:
             lineno = self.lineno
         source, line = self.inliner.reporter.get_source_and_line(lineno)
-        assert source is not None
-        assert line is not None
-        return str(source), line
+        return source, line
 
     def set_source_info(self, node: Node, lineno: int | None = None) -> None:
         # .. versionadded:: 2.0
-        node.source, node.line = self.get_source_info(lineno)
+        source, line = self.get_source_info(lineno)
+        node.source = str(source) if source is not None else None
+        node.line = line
 
     def get_location(self) -> str:
         """Get current location info for logging.