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-rw-r--r--src/util/any.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/src/util/any.h b/src/util/any.h
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+++ b/src/util/any.h
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+// Copyright (c) 2023 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_UTIL_ANY_H
+#define BITCOIN_UTIL_ANY_H
+
+#include <any>
+
+namespace util {
+
+/**
+ * Helper function to access the contained object of a std::any instance.
+ * Returns a pointer to the object if passed instance has a value and the type
+ * matches, nullptr otherwise.
+ */
+template<typename T>
+T* AnyPtr(const std::any& any) noexcept
+{
+ T* const* ptr = std::any_cast<T*>(&any);
+ return ptr ? *ptr : nullptr;
+}
+
+} // namespace util
+
+#endif // BITCOIN_UTIL_ANY_H