Treat nulls as NaNs on floating point input.

Added a log hook to allow logging generally in emscripten environments.

Author: highperformancecoder

Diff for: RESTProcess_base.h

@@ -1272,7 +1272,7 @@ namespace classdesc
 
   template <class T>
   typename enable_if<is_floating_point<T>, bool>::T partiallyMatchable(const REST_PROCESS_BUFFER& x)
-  {return x.type()==RESTProcessType::float_number||x.type()==RESTProcessType::int_number;}
+  {return x.type()==RESTProcessType::float_number||x.type()==RESTProcessType::int_number||x.type()==RESTProcessType::null;}
 
   template <class T>
   typename enable_if<

Diff for: classdesc.h

@@ -1122,6 +1122,9 @@ namespace classdesc
     template <> int enumKey<RESTProcessType::Type >(const string& x){return int(enum_keysData<RESTProcessType::Type >::keys(x));}
     template <> string enumKey<RESTProcessType::Type >(int x){return enum_keysData<RESTProcessType::Type >::keys(x);}
   }
+
+  /// and undefined hook to allow logging to console in an emscripten environment.
+  void log(const std::string&);
 }
 
 

Diff for: json_pack_base.h

@@ -18,6 +18,7 @@
 #include <stdarg.h>
 #include <vector>
 #include <map>
+#include <cmath>
 
 namespace classdesc
 {
@@ -296,8 +297,20 @@ namespace classdesc
 
   inline json5_parser::mValue valueof(float a)  
   {return json5_parser::mValue(double(a));}
+
   template <> inline float getValue(const json5_parser::mValue& x) 
-  {return x.get_value<double>();}
+  {
+    // treat nulls as nans - JSON.stringify of special values returns "null"
+    if (x.type()==json5_parser::null_type) return std::nan("");
+    return x.get_value<double>();
+  }
+
+  template <> inline double getValue(const json5_parser::mValue& x) 
+  {
+    // treat nulls as nans - JSON.stringify of special values returns "null"
+    if (x.type()==json5_parser::null_type) return std::nan("");
+    return x.get_value<double>();
+  }
 
  // basic types
   template <class T> typename