Parsing ala boost type_index

test/config/print_config.cpp

@@ -4,6 +4,7 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/pfr/config.hpp> // inclusion of an another PFR header may fail when BOOST_PFR_ENABLED=0
+#include <boost/preprocessor/stringize.hpp>
 
 #include <iostream>
 
@@ -15,6 +16,8 @@ int main() {
         << "BOOST_PFR_HAS_GUARANTEED_COPY_ELISION == " << BOOST_PFR_HAS_GUARANTEED_COPY_ELISION << '\n'
         << "BOOST_PFR_ENABLE_IMPLICIT_REFLECTION == " << BOOST_PFR_ENABLE_IMPLICIT_REFLECTION << '\n'
         << "BOOST_PFR_ENABLE_GET_NAME_STATIC == " << BOOST_PFR_ENABLE_GET_NAME_STATIC << '\n'
+        << "BOOST_PFR_FUNCTION_SIGNATURE == " << BOOST_PP_STRINGIZE(BOOST_PFR_FUNCTION_SIGNATURE) << '\n'
+        << "BOOST_PFR_CORE_NAME_PARSING == " << BOOST_PP_STRINGIZE(BOOST_PFR_CORE_NAME_PARSING) << '\n'
         << "BOOST_PFR_ENABLED == " << BOOST_PFR_ENABLED << '\n'
         << "__cplusplus == " << __cplusplus << '\n'
 #ifdef __cpp_structured_bindings

test/core_name/Jamfile.v2

@@ -43,6 +43,8 @@ project
         [ check-target-builds ../core_name//compiler_supports_cxx20_nontype_template_args : : [ check-target-builds ../core_name//compiler_supports_cxx20_clang_workaround : : <build>no ] ]
     ;
 
+local ENABLED_ENGINE = <define>BOOST_PFR_ENABLE_GET_NAME_STATIC=1 ;
+local DISABLED_ENGINE = <define>BOOST_PFR_ENABLE_GET_NAME_STATIC=0 ;
 
 
 
@@ -54,12 +56,20 @@ actions invoke_python_generator
 make fields_names_nonascii.cpp : generate_fields_names_nonascii.cpp.py : @invoke_python_generator ;
 make fields_names_big.cpp : generate_fields_names_big.cpp.py : @invoke_python_generator ;
 
-test-suite pfr_tests
+test-suite pfr_name_tests
   :
     [ run fields_names.cpp : : : : ]
     [ run fields_names_constexpr.cpp : : : : ]
     [ run fields_names_nonascii.cpp : : : <toolset>msvc:<cxxflags>"/utf-8" : ]
     [ run fields_names_big.cpp : : : <toolset>msvc:<cxxflags>"/bigobj" : ]
+    [ run print_name.cpp : : : <test-info>always_show_run_output ]
   ;
 
+for local source_file in [ glob ./compile-fail/*.cpp ]
+{
+    local target_name = $(source_file[1]:B) ;
+    pfr_name_tests += [ compile-fail $(source_file) : $(ENABLED_ENGINE) : $(target_name)_on ] ;
+    pfr_name_tests += [ compile-fail $(source_file) : $(DISABLED_ENGINE) : $(target_name)_off ] ;
+}
+
 

test/core_name/compile-fail/fields_names_could_not_detect_compiler.cpp

@@ -0,0 +1,20 @@
+// Copyright (c) 2023 Bela Schaum, X-Ryl669, Denis Mikhailov.
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+// Initial implementation by Bela Schaum, https://github.com/schaumb
+// The way to make it union and UB free by X-Ryl669, https://github.com/X-Ryl669
+//
+
+#define BOOST_PFR_FUNCTION_SIGNATURE ""
+#include <boost/pfr/core_name.hpp>
+
+struct A { int field; };
+
+int main() {
+    (void)boost::pfr::get_name<0, A>(); // Must be a compile time error
+}
+
+

test/core_name/compile-fail/fields_names_misconfigured_compiler.cpp

@@ -0,0 +1,21 @@
+// Copyright (c) 2023 Bela Schaum, X-Ryl669, Denis Mikhailov.
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+// Initial implementation by Bela Schaum, https://github.com/schaumb
+// The way to make it union and UB free by X-Ryl669, https://github.com/X-Ryl669
+//
+
+#define BOOST_PFR_FUNCTION_SIGNATURE "dummy"
+#define BOOST_PFR_CORE_NAME_PARSING (0,0,"")
+#include <boost/pfr/core_name.hpp>
+
+struct A { int field; };
+
+int main() {
+    (void)boost::pfr::get_name<0, A>(); // Must be a compile time error
+}
+
+

test/core_name/print_name.cpp

@@ -0,0 +1,33 @@
+// Copyright (c) 2023 Bela Schaum, X-Ryl669, Denis Mikhailov.
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+// Initial implementation by Bela Schaum, https://github.com/schaumb
+// The way to make it union and UB free by X-Ryl669, https://github.com/X-Ryl669
+//
+
+#include <iostream>
+
+// This cpp file:
+// * tests BOOST_PFR_CORE_NAME_PARSING macro
+// * outputs full name of the function so that PFRs extraction of field name could be adjust to new compiler without requesting regression tester's help
+#define BOOST_PFR_CORE_NAME_PARSING (0,0,false,"")
+#include <boost/pfr/core_name.hpp>
+
+namespace user_defined_namespace {
+    struct user_defined_class { int user_defined_field; };
+}
+
+int main()
+{
+    using namespace boost::pfr;
+
+    std::cout << "user_defined_namespace::user_defined_class::user_defined_field: "
+        << get_name<0, user_defined_namespace::user_defined_class>() << '\n';
+
+
+    return 0;
+}
+