Merge branch 'rightlib' into mergelibs-240423-0906

1 files changed, 49 insertions, 0 deletions

diff --git a/library/cpp/yt/misc/concepts.h b/library/cpp/yt/misc/concepts.h
new file mode 100644
index 00000000000..976c707ffec
--- /dev/null
+++ b/library/cpp/yt/misc/concepts.h
@@ -0,0 +1,49 @@
+#pragma once
+
+#include <concepts>
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+namespace NDetail {
+
+template <class T, class TSignature>
+struct TIsInvocable;
+
+template <class T, class TResult, bool NoExcept, class... TArgs>
+struct TIsInvocable<T, TResult(TArgs...) noexcept(NoExcept)>
+{
+private:
+    static constexpr bool IsInvocable_ = requires (T&& t, TArgs&&... args) {
+        { std::forward<T>(t)(std::forward<TArgs>(args)...) } -> std::same_as<TResult>;
+    };
+
+    static constexpr bool IsNoThrowInvocable_ = requires (T&& t, TArgs&&... args) {
+        { std::forward<T>(t)(std::forward<TArgs>(args)...) } noexcept -> std::same_as<TResult>;
+    };
+
+public:
+    static constexpr bool Value =
+        IsInvocable_ &&
+        (!NoExcept || IsNoThrowInvocable_);
+};
+
+} // namespace NDetail
+
+////////////////////////////////////////////////////////////////////////////////
+
+template <class TObject, class TScalar>
+concept CScalable = requires (TObject object, TScalar scalar)
+{
+    { object * scalar } -> std::same_as<TObject>;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+template <class T, class TSignature>
+concept CInvocable = NDetail::TIsInvocable<T, TSignature>::Value;
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT