================
@@ -87,6 +88,9 @@ class DependencyCollector {
bool IsSystem, bool IsModuleFile,
bool IsMissing);
+ /// @return the PPCallback this collector added to the Preprocessor.
+ virtual PPCallbacks *getPPCallbacks() { return nullptr; };
----------------
jansvoboda11 wrote:
Do we need this new interface? It's only implemented by single derived class
that we have available in the spot where we call `getPPCallbacks()`.
https://github.com/llvm/llvm-project/pull/164345
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