Added type_to_string

src/catch2/catch_all.hpp

@@ -109,6 +109,7 @@
 #include <catch2/internal/catch_test_spec_parser.hpp>
 #include <catch2/internal/catch_textflow.hpp>
 #include <catch2/internal/catch_to_string.hpp>
+#include <catch2/internal/catch_type_to_string.hpp>
 #include <catch2/internal/catch_uncaught_exceptions.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>

src/catch2/internal/catch_compiler_capabilities.hpp

@@ -58,6 +58,7 @@
 
 #    define CATCH_INTERNAL_IGNORE_BUT_WARN(...) (void)__builtin_constant_p(__VA_ARGS__)
 
+#    define CATCH_INTERNAL_TYPEID_DEMANGLE
 #endif
 
 #if defined(__CUDACC__) && !defined(__clang__)
@@ -73,6 +74,7 @@
 #    define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "clang diagnostic push" )
 #    define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION  _Pragma( "clang diagnostic pop" )
 
+#    define CATCH_INTERNAL_TYPEID_DEMANGLE
 #endif // __clang__ && !_MSC_VER
 
 #if defined(__clang__)

src/catch2/internal/catch_type_to_string.hpp

@@ -0,0 +1,33 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE_1_0.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#ifndef CATCH_TYPE_TO_STRING_HPP_INCLUDED
+#define CATCH_TYPE_TO_STRING_HPP_INCLUDED
+
+#include <typeinfo>
+
+#if defined( CATCH_INTERNAL_TYPEID_DEMANGLE )
+#    include <memory>
+#    include <cxxabi.h>
+#endif
+
+namespace Catch {
+    template <typename T> std::string type_to_string() {
+#if defined( CATCH_INTERNAL_TYPEID_DEMANGLE )
+        const char* name = typeid( T ).name();
+        int status = 0;
+        std::unique_ptr<char, void ( * )( void* )> res{
+            abi::__cxa_demangle( name, NULL, NULL, &status ), std::free };
+
+        return status == 0 ? res.get() : name;
+#else
+        return typeid( T ).name();
+#endif
+    }
+} // end namespace Catch
+
+#endif // CATCH_TYPE_TO_STRING_HPP_INCLUDED