[clang] [libclang] Add API to query more information about base classes. (PR #120300)

[Erich Keane via cfe-commits]

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@@ -27,6 +27,33 @@ unsigned clang_isVirtualBase(CXCursor C) {
   return B->isVirtual();
 }
 
+unsigned clang_visitCXXBaseClasses(CXType PT, CXFieldVisitor visitor,
+                                   CXClientData client_data) {
+  CXCursor PC = clang_getTypeDeclaration(PT);
+  if (clang_isInvalid(PC.kind))
+    return false;
+  const CXXRecordDecl *RD =
+      dyn_cast_or_null<CXXRecordDecl>(cxcursor::getCursorDecl(PC));
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erichkeane wrote:

are we supposed to be using the `if_present` versions or not?

https://github.com/llvm/llvm-project/pull/120300