function_objects.hpp

Author: danielaparker

include/jsoncons/json_visitor.hpp

@@ -23,17 +23,10 @@
 #include <jsoncons/utility/bigint.hpp>
 #include <jsoncons/utility/byte_string.hpp>
 #include <jsoncons/utility/more_type_traits.hpp>
+#include <jsoncons/utility/function_objects.hpp>
 
 namespace jsoncons {
 
-    struct decode_half
-    {
-        double operator()(uint16_t val) const 
-        {
-            return binary::decode_half(val);
-        }
-    };
-
     class typed_array_visitor
     {
     public:

include/jsoncons/reflect/reflect_traits_gen.hpp

@@ -21,6 +21,7 @@
 #include <jsoncons/semantic_tag.hpp>
 #include <jsoncons/ser_utils.hpp>
 #include <jsoncons/utility/more_type_traits.hpp>
+#include <jsoncons/utility/function_objects.hpp>
 
 #define JSONCONS_RDONLY(X)
 
@@ -29,24 +30,6 @@
 namespace jsoncons {
 namespace reflect {
 
-struct always_true
-{
-    template< typename T>
-    constexpr bool operator()(const T&) const noexcept
-    {
-        return true;
-    }
-};
-
-struct identity
-{
-    template< typename T>
-    constexpr T&& operator()(T&& val) const noexcept
-    {
-        return std::forward<T>(val);
-    }
-};
-
 template <typename T>
 struct json_object_name_members
 {};
@@ -187,9 +170,6 @@ is_optional_value_set(const T&)
 
 } // namespace reflect
 
-using always_true = reflect::always_true; 
-using identity = reflect::identity; 
-
 } // namespace jsoncons
 
 #if defined(_MSC_VER)

include/jsoncons/typed_array.hpp

@@ -21,6 +21,7 @@
 #include <jsoncons/sink.hpp>
 #include <jsoncons/utility/bigint.hpp>
 #include <jsoncons/utility/conversion.hpp>
+#include <jsoncons/utility/function_objects.hpp>
 
 namespace jsoncons {
 

include/jsoncons/utility/function_objects.hpp

@@ -0,0 +1,43 @@
+// Copyright 2013-2026 Daniel Parker
+// Distributed under the Boost license, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See https://github.com/danielaparker/jsoncons for latest version
+
+#ifndef JSONCONS_UTILITY_FUNCTION_OBJECTS_HPP
+#define JSONCONS_UTILITY_FUNCTION_OBJECTS_HPP
+
+#include <functional> 
+#include <jsoncons/config/compiler_support.hpp>
+
+namespace jsoncons {
+
+struct identity
+{
+    template< typename T>
+    constexpr T&& operator()(T&& val) const noexcept
+    {
+        return std::forward<T>(val);
+    }
+};
+
+struct always_true
+{
+    template< typename T>
+    constexpr bool operator()(const T&) const noexcept
+    {
+        return true;
+    }
+};
+
+struct decode_half
+{
+    double operator()(uint16_t val) const 
+    {
+        return binary::decode_half(val);
+    }
+};
+
+} // namespace jsoncons
+
+#endif // JSONCONS_UTILITY_FUNCTION_OBJECTS_HPP