Add option explicit code, but don't throw yet

Work towards #218

include/chaiscript/dispatchkit/bootstrap.hpp

@@ -440,6 +440,8 @@ namespace chaiscript
         m->add(constructor<dispatch::Dynamic_Object ()>(), "Dynamic_Object");
         m->add(fun(&dispatch::Dynamic_Object::get_type_name), "get_type_name");
         m->add(fun(&dispatch::Dynamic_Object::get_attrs), "get_attrs");
+        m->add(fun(&dispatch::Dynamic_Object::set_explicit), "set_explicit");
+        m->add(fun(&dispatch::Dynamic_Object::is_explicit), "is_explicit");
 
         m->add(fun(static_cast<Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &)>(&dispatch::Dynamic_Object::get_attr)), "get_attr");
         m->add(fun(static_cast<const Boxed_Value & (dispatch::Dynamic_Object::*)(const std::string &) const>(&dispatch::Dynamic_Object::get_attr)), "get_attr");

include/chaiscript/dispatchkit/dynamic_object.hpp

@@ -28,14 +28,24 @@ namespace chaiscript
     {
       public:
         Dynamic_Object(std::string t_type_name)
-          : m_type_name(std::move(t_type_name))
+          : m_type_name(std::move(t_type_name)), m_option_explicit(false)
         {
         }
 
-        Dynamic_Object() : m_type_name("")
+        Dynamic_Object() : m_type_name(""), m_option_explicit(false)
         {
         }
 
+        bool is_explicit() const
+        {
+          return m_option_explicit;
+        }
+
+        void set_explicit(const bool t_explicit)
+        {
+          m_option_explicit = t_explicit;
+        }
+
         std::string get_type_name() const
         {
           return m_type_name;
@@ -85,6 +95,7 @@ namespace chaiscript
 
       private:
         std::string m_type_name;
+        bool m_option_explicit;
 
         std::map<std::string, Boxed_Value> m_attrs;
     };

unittests/dynamic_object_dynamic_attrs_explicit.chai

@@ -10,5 +10,5 @@ var o = MyClass();
 
 assert_true(o.is_explicit());
 
-assert_throws(fun[o](){o.x = 2})
+assert_throws("error", fun[o](){o.x = 2})