Permit filtering warnings generated during source code parsing (#13894)

Co-authored-by: Valentin Heinisch <valentin.heinisch@vector.com>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

AUTHORS.rst

@@ -117,6 +117,7 @@ Contributors
 * Thomas Waldmann -- apidoc module fixes
 * Till Hoffmann -- doctest option to exit after first failed test
 * Tim Hoffmann -- theme improvements
+* Valentin Heinisch -- warning types improvement
 * Victor Wheeler -- documentation improvements
 * Vince Salvino -- JavaScript search improvements
 * Will Maier -- directory HTML builder

CHANGES.rst

@@ -102,6 +102,9 @@ Features added
   Patch by Matthias Geier.
 * #14029: intersphinx: Fix error in format string interpolation.
   Patch by Matthieu de Cibeins.
+* #13894: Add ``source_code_parser`` type to :confval:`suppress_warnings`
+  for grouping issues related to the C and C++ parsers.
+  Patch by Valentin H.
 
 Bugs fixed
 ----------

doc/usage/configuration.rst

@@ -1402,6 +1402,8 @@ Options for warning control
    * ``ref.python``
    * ``ref.ref``
    * ``ref.term``
+   * ``source_code_parser.c``
+   * ``source_code_parser.cpp``
    * ``toc.circular``
    * ``toc.duplicate_entry``
    * ``toc.empty_glob``

sphinx/util/cfamily.py

@@ -356,7 +356,10 @@ class BaseParser:
         raise self._make_multi_error(errors, '')
 
     def warn(self, msg: str) -> None:
-        logger.warning(msg, location=self.location)
+        subtype = 'c' if self.language == 'C' else 'cpp'
+        logger.warning(
+            msg, location=self.location, type='source_code_parser', subtype=subtype
+        )
 
     def match(self, regex: re.Pattern[str]) -> bool:
         match = regex.match(self.definition, self.pos)