Use SFINAE instead of 'requires' clause because of cppcheck.

nlohmann · Feb 29, 2024 · 0c9adb1 · 0c9adb1
1 parent f68d2b1
commit 0c9adb1
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Showing 2 changed files with 8 additions and 4 deletions.
diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
@@ -3692,10 +3692,12 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
 #endif
     }
 
+    // template<typename ScalarType, typename std::enable_if<
+    //              std::is_scalar<ScalarType>::value, int>::type = 0>
     /// @brief comparison: equal
     /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    template <typename T>
-    requires detail::json_compatible_type<T, basic_json_t>::value
+    template <typename T,
+              std::enable_if<detail::json_compatible_type<T, basic_json_t>::value, int>::type = 0>
     bool operator==(T rhs) const noexcept
     {
         return *this == basic_json(rhs);

diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
@@ -22912,10 +22912,12 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
 #endif
     }
 
+    // template<typename ScalarType, typename std::enable_if<
+    //              std::is_scalar<ScalarType>::value, int>::type = 0>
     /// @brief comparison: equal
     /// @sa https://json.nlohmann.me/api/basic_json/operator_eq/
-    template <typename T>
-    requires detail::json_compatible_type<T, basic_json_t>::value
+    template <typename T,
+              std::enable_if<detail::json_compatible_type<T, basic_json_t>::value, int>::type = 0>
     bool operator==(T rhs) const noexcept
     {
         return *this == basic_json(rhs);