[libclang/python] Ensure all used library functions are registered (#140015)

Add a few library functions that were not previously registered to the
`CDLL` object. The current behavior relied on the default `restype` to
work.

Add a test to check that all used library functions are properly
registered.

Author: DeinAlptraum

clang/bindings/python/clang/cindex.py

@@ -3969,6 +3969,7 @@ def set_property(self, property, value):
     ("clang_equalRanges", [SourceRange, SourceRange], bool),
     ("clang_equalTypes", [Type, Type], bool),
     ("clang_formatDiagnostic", [Diagnostic, c_uint], _CXString),
+    ("clang_getAddressSpace", [Type], c_uint),
     ("clang_getArgType", [Type, c_uint], Type),
     ("clang_getArrayElementType", [Type], Type),
     ("clang_getArraySize", [Type], c_longlong),
@@ -3987,8 +3988,10 @@ def set_property(self, property, value):
     ("clang_getCursorAvailability", [Cursor], c_int),
     ("clang_getCursorDefinition", [Cursor], Cursor),
     ("clang_getCursorDisplayName", [Cursor], _CXString),
+    ("clang_getCursorExceptionSpecificationType", [Cursor], c_int),
     ("clang_getCursorExtent", [Cursor], SourceRange),
     ("clang_getCursorLexicalParent", [Cursor], Cursor),
+    ("clang_getCursorLinkage", [Cursor], c_int),
     ("clang_getCursorLocation", [Cursor], SourceLocation),
     ("clang_getCursorPrettyPrinted", [Cursor, PrintingPolicy], _CXString),
     ("clang_getCursorPrintingPolicy", [Cursor], c_object_p),
@@ -3997,6 +4000,7 @@ def set_property(self, property, value):
     ("clang_getCursorResultType", [Cursor], Type),
     ("clang_getCursorSemanticParent", [Cursor], Cursor),
     ("clang_getCursorSpelling", [Cursor], _CXString),
+    ("clang_getCursorTLSKind", [Cursor], c_int),
     ("clang_getCursorType", [Cursor], Type),
     ("clang_getCursorUSR", [Cursor], _CXString),
     ("clang_Cursor_getMangling", [Cursor], _CXString),
@@ -4022,6 +4026,7 @@ def set_property(self, property, value):
     ("clang_getEnumConstantDeclUnsignedValue", [Cursor], c_ulonglong),
     ("clang_getEnumConstantDeclValue", [Cursor], c_longlong),
     ("clang_getEnumDeclIntegerType", [Cursor], Type),
+    ("clang_getExceptionSpecificationType", [Type], c_int),
     ("clang_getFile", [TranslationUnit, c_interop_string], c_object_p),
     ("clang_getFileName", [File], _CXString),
     ("clang_getFileTime", [File], c_uint),
@@ -4118,6 +4123,7 @@ def set_property(self, property, value):
     ("clang_Cursor_getBriefCommentText", [Cursor], _CXString),
     ("clang_Cursor_getRawCommentText", [Cursor], _CXString),
     ("clang_Cursor_getOffsetOfField", [Cursor], c_longlong),
+    ("clang_Cursor_getStorageClass", [Cursor], c_int),
     ("clang_Cursor_isAnonymous", [Cursor], bool),
     ("clang_Cursor_isAnonymousRecordDecl", [Cursor], bool),
     ("clang_Cursor_isBitField", [Cursor], bool),

clang/bindings/python/tests/cindex/test_lib.py

@@ -0,0 +1,31 @@
+import os
+
+import clang.cindex
+
+if "CLANG_LIBRARY_PATH" in os.environ:
+    clang.cindex.Config.set_library_path(os.environ["CLANG_LIBRARY_PATH"])
+
+import unittest
+import ast
+
+
+class TestLib(unittest.TestCase):
+    def test_functions_registered(self):
+        def get_function_spelling(node):
+            # The call expressions we are interested in have
+            # their spelling in .attr, not .id
+            if hasattr(node, "attr"):
+                return node.attr
+            return ""
+
+        filename = clang.cindex.__file__
+        with open(filename) as file:
+            root = ast.parse(file.read())
+        functions = [
+            get_function_spelling(node.func)
+            for node in ast.walk(root)
+            if isinstance(node, ast.Call)
+        ]
+        used_functions = set([func for func in functions if func.startswith("clang_")])
+        registered_functions = set([item[0] for item in clang.cindex.FUNCTION_LIST])
+        self.assertEqual(used_functions - registered_functions, set())