Create traits.h

include/jwt-cpp/traits.h

@@ -0,0 +1,35 @@
+#pragma once
+
+namespace jwt {
+    namespace json {
+        template<typename value, 
+            enum type, 
+            typename object, 
+            typename array, 
+            typename string, 
+            typename number, 
+            typename boolean, 
+            /*typename null = nullptr*/>
+        struct traits {
+            using value = value;
+            using type = type;
+            using object = object;
+            using array = array;
+            using string = string;
+            using number = number;
+            using boolean = boolean;
+            // using null = null;
+        };
+    }
+}
+
+struct picojson_traits : traits<
+    picojson::value, 
+    picojson::type, // TBA
+    picojson::object, 
+    picojson::array, 
+    std::string, 
+    int64_t, 
+    bool> {
+};
+