add filed name

iguana/enum_reflection.hpp → iguana/field_reflection.hpp

@@ -59,6 +59,12 @@ inline constexpr std::string_view enum_string() {
   return s1;
 }
 
+template <auto field>
+inline constexpr std::string_view field_string() {
+  constexpr std::string_view raw_name = enum_string<field>();
+  return raw_name.substr(raw_name.rfind(":") + 1);
+}
+
 #if defined(__clang__) && (__clang_major__ >= 17)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wenum-constexpr-conversion"

iguana/reflection.hpp

@@ -21,7 +21,7 @@
 
 #include "detail/string_stream.hpp"
 #include "detail/traits.hpp"
-#include "enum_reflection.hpp"
+#include "field_reflection.hpp"
 #include "frozen/string.h"
 #include "frozen/unordered_map.h"
 

iguana/util.hpp

@@ -14,8 +14,8 @@
 #include "define.h"
 #include "detail/charconv.h"
 #include "detail/utf.hpp"
-#include "enum_reflection.hpp"
 #include "error_code.h"
+#include "field_reflection.hpp"
 #include "reflection.hpp"
 
 namespace iguana {

test/test_util.cpp

@@ -1,20 +1,20 @@
-#include <iguana/enum_reflection.hpp>
+#include <iguana/field_reflection.hpp>
 #include <iostream>
 
 #define DOCTEST_CONFIG_IMPLEMENT
 #include "doctest.h"
 
-#if defined(__clang__) || defined(_MSC_VER) ||                                 \
+#if defined(__clang__) || defined(_MSC_VER) || \
     (defined(__GNUC__) && __GNUC__ > 8)
 class message {};
 
 namespace ns {
 class message {};
-} // namespace ns
+}  // namespace ns
 
 namespace ns::ns2 {
 class message {};
-} // namespace ns::ns2
+}  // namespace ns::ns2
 
 TEST_CASE("test type string") {
   static_assert(iguana::type_string<message>() == "message");
@@ -41,12 +41,12 @@ enum Size { small, large };
 namespace ns {
 enum class Color { red, black };
 enum Size { small, large };
-} // namespace ns
+}  // namespace ns
 
 namespace ns::ns2 {
 enum class Color { red, black };
 enum Size { small, large };
-} // namespace ns::ns2
+}  // namespace ns::ns2
 
 TEST_CASE("test enum string") {
   static_assert(iguana::enum_string<Color::red>() == "Color::red");
@@ -83,6 +83,28 @@ TEST_CASE("test enum string") {
   std::cout << s5 << "\n";
   CHECK(s5 == "ns::ns2::large");
 }
+
+struct sub {
+  int id;
+};
+
+struct person {
+  ns::ns2::Color color;
+  int id;
+  sub s;
+  std::string str;
+};
+
+TEST_CASE("test field string") {
+  constexpr auto field_name1 = iguana::field_string<&person::color>();
+  constexpr auto field_name2 = iguana::field_string<&person::id>();
+  constexpr auto field_name3 = iguana::field_string<&person::s>();
+  constexpr auto field_name4 = iguana::field_string<&person::str>();
+  CHECK(field_name1 == "color");
+  CHECK(field_name2 == "id");
+  CHECK(field_name3 == "s");
+  CHECK(field_name4 == "str");
+}
 #endif
 
 DOCTEST_MSVC_SUPPRESS_WARNING_WITH_PUSH(4007)