diff --git a/depends/jsoncpp/jsoncpp-ex.h b/depends/jsoncpp/jsoncpp-ex.h
new file mode 100644
index 000000000..fc1174133
--- /dev/null
+++ b/depends/jsoncpp/jsoncpp-ex.h
@@ -0,0 +1,31 @@
+#include "jsoncpp.h"
+#pragma once
+
+namespace JsonEx {
+
+    template <typename T> bool is (const Json::Value &val) { return false; }
+    template <typename T> T as (const Json::Value &val);
+    template <typename T> T get (const Json::Value &val, const std::string &key, const T &default_) { return default_; }
+
+#define define_helpers(type, is_func, as_func) \
+        template<> inline bool is<type> (const Json::Value &val) { return val.is_func(); } \
+        template<> inline type as<type> (const Json::Value &val) { return val.as_func(); } \
+        template<> inline type get<type> (const Json::Value &val, const std::string &key, const type &default_) \
+            { Json::Value x = val[key]; return is<type>(x) ? as<type>(x) : default_; }
+    define_helpers(bool,         isBool,    asBool);
+    define_helpers(Json::Int,    isInt,     asInt);
+    define_helpers(Json::UInt,   isUInt,    asUInt);
+    define_helpers(Json::Int64,  isInt64,   asInt64);
+    define_helpers(Json::UInt64, isUInt64,  asUInt64);
+    define_helpers(float,        isDouble,  asFloat);
+    define_helpers(double,       isDouble,  asDouble);
+    define_helpers(std::string,  isString,  asString);
+#undef define_helpers
+
+    inline std::string toSimpleString (const Json::Value &val)
+    {
+        Json::FastWriter w;
+        return w.write(val);
+    }
+
+}