Add build_functor algorithm for constructing a boost function_object from a script snippet

chaiscript/callbacktest.cpp

@@ -1,7 +1,7 @@
 #include <iostream>
 
-#include "chaiscript.hpp"
 #include "function_call.hpp"
+#include "chaiscript.hpp"
 #include <boost/function.hpp>
 
 struct Callback_Handler
@@ -53,5 +53,11 @@ int main(int argc, char *argv[]) {
     }
 
     cb_handler.do_callbacks();
+
+    boost::function<std::string (const std::string&, const std::string &)> f = 
+      dispatchkit::build_functor<std::string (const std::string &, const std::string &)>
+        (chai, "function(x, y) { x + y }");
+
+    std::cout << "Functor call: " << f("Hello", " World") << std::endl;
 }
 

dispatchkit/boxed_value.hpp

@@ -2,6 +2,7 @@
 #define __boxed_value_hpp__
 
 #include "type_info.hpp"
+#include <map>
 #include <boost/shared_ptr.hpp>
 #include <boost/any.hpp>
 #include <boost/function.hpp>

dispatchkit/dispatchkit.hpp

@@ -222,6 +222,8 @@ namespace dispatchkit
     }
     std::cout << std::endl;
   }
+
+
 }
 
 #endif

dispatchkit/function_call.hpp

@@ -11,6 +11,9 @@
 #include <boost/shared_ptr.hpp>
 #include <boost/bind.hpp>
 #include <boost/function.hpp>
+#include <string>
+#include <vector>
+#include "proxy_functions.hpp"
 
 namespace dispatchkit
 {
@@ -58,6 +61,13 @@ namespace dispatchkit
         FunctionType *p;
         return build_function_caller_helper(p, func);
       }
+
+
+  template<typename FunctionType, typename ScriptEngine>
+    boost::function<FunctionType> build_functor(ScriptEngine &e, const std::string &script)
+    {
+      return build_function_caller<FunctionType>(Cast_Helper<boost::shared_ptr<Proxy_Function> >()(e.evaluate_string(script)));
+    }
 }
 
 # endif