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Chapter17/cib/libs/stdx/panic.hpp

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+#pragma once
+
+#include <stdx/ct_string.hpp>
+
+#include <utility>
+
+namespace stdx {
+inline namespace v1 {
+struct default_panic_handler {
+    template <typename... Args>
+    static auto panic(Args &&...) noexcept -> void {}
+
+#if __cplusplus >= 202002L
+    template <ct_string, typename... Args>
+    static auto panic(Args &&...) noexcept -> void {}
+#endif
+};
+
+template <typename...> inline auto panic_handler = default_panic_handler{};
+
+template <typename... Ts, typename... Args> auto panic(Args &&...args) -> void {
+    panic_handler<Ts...>.panic(std::forward<Args>(args)...);
+}
+
+#if __cplusplus >= 202002L
+template <ct_string S, typename... Ts, typename... Args>
+auto panic(Args &&...args) -> void {
+    panic_handler<Ts...>.template panic<S>(std::forward<Args>(args)...);
+}
+#endif
+} // namespace v1
+} // namespace stdx
+
+// NOLINTBEGIN(cppcoreguidelines-macro-usage)
+
+#if __cplusplus >= 202002L
+#define STDX_PANIC(MSG, ...)                                                   \
+    [] {                                                                       \
+        using stdx::ct_string_literals::operator""_cts;                        \
+        stdx::panic<MSG##_cts>(__VA_ARGS__);                                   \
+    }()
+#else
+#define STDX_PANIC(...) stdx::panic(__VA_ARGS__)
+#endif
+
+// NOLINTEND(cppcoreguidelines-macro-usage)