Merge pull request #271 from qicosmos/indexs_of

qicosmos · May 6, 2024 · aa8c376 · aa8c376
2 parents 738bf48 + bd8f648
commit aa8c376
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diff --git a/iguana/reflection.hpp b/iguana/reflection.hpp
@@ -958,6 +958,11 @@ constexpr size_t index_of() {
   return index;
 }
 
+template <auto... members>
+constexpr std::array<size_t, sizeof...(members)> indexs_of() {
+  return std::array<size_t, sizeof...(members)>{index_of<members>()...};
+}
+
 template <auto member>
 constexpr auto name_of() {
   using T = typename member_tratis<decltype(member)>::owner_type;
@@ -966,6 +971,12 @@ constexpr auto name_of() {
   return std::string_view(s.data(), s.size());
 }
 
+template <auto... members>
+constexpr std::array<std::string_view, sizeof...(members)> names_of() {
+  return std::array<std::string_view, sizeof...(members)>{
+      name_of<members>()...};
+}
+
 template <auto member>
 constexpr auto member_count_of() {
   using T = typename member_tratis<decltype(member)>::owner_type;

diff --git a/test/test.cpp b/test/test.cpp
@@ -913,6 +913,12 @@ TEST_CASE("index_of name_of") {
   CHECK(idx1 == 1);
   CHECK(idx2 == 0);
 
+  constexpr auto index_arr = iguana::indexs_of<&point_t::x, &point_t::y>();
+  constexpr auto name_arr = iguana::names_of<&point_t::x, &point_t::y>();
+
+  CHECK(index_arr == std::array<size_t, 2>{0, 1});
+  CHECK(name_arr == std::array<std::string_view, 2>{"x", "y"});
+
   constexpr auto s1 = iguana::name_of<&point_t::y>();
   static_assert(s1 == "y");
   constexpr auto s2 = iguana::name_of<&person::name>();