[clang] [Clang][P1061] Add stuctured binding packs (PR #121417)

[Erich Keane via cfe-commits]

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@@ -3423,6 +3425,30 @@ VarDecl *BindingDecl::getHoldingVar() const {
   return VD;
 }
 
+void DecompositionDecl::VisitHoldingVars(
+    llvm::function_ref<void(VarDecl *)> F) const {
+  VisitBindings([&](BindingDecl *BD) {
+    if (VarDecl *VD = BD->getHoldingVar())
+      F(VD);
+  });
+}
+
+void DecompositionDecl::VisitBindings(
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erichkeane wrote:

This one is a bit more complicated?  But I'd be surprised if there isn't an existing llvm iterator that can do this. 

https://github.com/llvm/llvm-project/pull/121417