From a95c146982fe3d91a0e1ee72f4bfd9c6e91ca356 Mon Sep 17 00:00:00 2001
From: ralfulrich <ralf.ulrich@kit.edu>
Date: Wed, 12 May 2021 10:06:56 +0200
Subject: [PATCH] specific utility file
---
.../framework/utility/HasMethodSignature.hpp | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 corsika/framework/utility/HasMethodSignature.hpp
diff --git a/corsika/framework/utility/HasMethodSignature.hpp b/corsika/framework/utility/HasMethodSignature.hpp
new file mode 100644
index 000000000..a3a06567c
--- /dev/null
+++ b/corsika/framework/utility/HasMethodSignature.hpp
@@ -0,0 +1,47 @@
+#pragma once
+
+/*
+ * (c) Copyright 2018 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
+/**
+ * @file HasMethodSignature.hpp
+ */
+
+#include <type_traits>
+
+namespace corsika {
+
+ namespace detail {
+
+ /**
+ Helper traits class (partial) for static compile time checking.
+
+ Note, this is a poor replacement for C++20 concepts... they are
+ eagerly awaited!
+
+ It defines the default body of a generic test function returning
+ std::false_type.
+
+ In addition it defines the pattern for class-method matching with a
+ return type TReturn and function arguments TArgs... . Right now
+ both method signatures, "const" and "not const", are matched.
+ */
+ template <typename TReturn, typename... TArgs>
+ struct has_method_signature {
+
+ // the non-const version
+ template <class T>
+ static std::true_type testSignature(TReturn (T::*)(TArgs...));
+
+ // the const version
+ template <class T>
+ static std::true_type testSignature(TReturn (T::*)(TArgs...) const);
+ };
+
+ } // namespace detail
+} // namespace corsika
--
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