Implemented basic mace::stub with fast compiles!!

include/fc/actor.hpp

@@ -0,0 +1,46 @@
+#pragma once
+#include <fc/ptr.hpp>
+#include <fc/thread.hpp>
+
+namespace fc {
+
+  namespace detail {
+    struct actor_member { 
+        // TODO: expand for all method arity and constness....
+        template<typename R, typename C, typename A1, typename P>
+        static fc::function<fc::future<R>(A1)> functor( P&& p, R (C::*mem_func)(A1), fc::thread* t = nullptr) {
+          return [=](A1 a1){ return t->async( [=](){ return (p->*mem_func)(a1); } ); };
+        }
+    };
+
+    template<typename ThisPtr>
+    struct actor_vtable_visitor {
+        template<typename U>
+        actor_vtable_visitor( fc::thread* t, U&& u ):_thread(t),_this( fc::forward<U>(u) ){}
+
+        template<typename Function, typename MemberPtr>
+        void operator()( const char* name, Function& memb, MemberPtr m )const {
+          memb = actor_member::functor( _this, m, _thread );
+        }
+        fc::thread* _thread;
+        ThisPtr _this;
+    };
+  }
+
+  /**
+   *  Posts all method calls to another thread and
+   *  returns a future.
+   */
+  template<typename Interface>
+  class actor : public ptr<Interface, detail::actor_member> {
+    public:
+      template<typename InterfaceType>
+      actor( InterfaceType* p, fc::thread* t = &fc::thread::current() )
+      {
+          this->_vtable.reset(new detail::vtable<Interface,detail::actor_member>() );
+          this->_vtable->template visit<InterfaceType>( detail::actor_vtable_visitor<InterfaceType*>(t, p) );
+      }
+      
+  };
+
+} // namespace fc

include/fc/function.hpp

@@ -1,50 +1,35 @@
-#ifndef _FC_FUNCTION_HPP_
+#pragma once
-#define _FC_FUNCTION_HPP_
 #include <fc/utility.hpp>
 #include <fc/shared_ptr.hpp>
-/*
-#include <functional>
-#include <boost/config.hpp>
 
 namespace fc {
-  // place holder for more compile-effecient functor
-#if !defined(BOOST_NO_TEMPLATE_ALIASES) 
-  template<typename T>
-  using function = std::function<T>;
-#else
-#endif
-*/
-
-
-//template<typename Signature>
-//class function { };
-
-namespace fc {
-
 template<typename R,typename ... Args>
-class function_impl {
+class function {
   public:
+    function(){}
+
     template<typename Functor>
-    function_impl( Functor&& f )
+    function( Functor&& f )
     :func( new impl<Functor>( fc::forward<Functor>(f) ) ){};
 
-    function_impl( const function_impl& c ):func(c.func){}
+    function( const function& c ):func(c.func){}
-    function_impl( function_impl&& c ) { fc::swap( func, c.func); }
+    function( function&& c ) { fc::swap( func, c.func); }
-    ~function_impl(){}
+    ~function(){}
 
     template<typename Functor>
-    function_impl& operator=( Functor&& f ) { 
+    function& operator=( Functor&& f ) { 
       func.reset( new impl<Functor>( fc::forward<Functor>(f) ) ); 
       return *this; 
     }
 
-    function_impl& operator=( const function_impl& c ) { func = c.func; return *this; }
+    function& operator=( const function& c ) { func = c.func; return *this; }
-    function_impl& operator=( function_impl&& c )      { fc::swap(func,c.func); return *this; }
+    function& operator=( function&& c )      { fc::swap(func,c.func); return *this; }
     
     template<typename... Args2>
     R operator()( Args2... args2) { return func->call(fc::forward<Args2>(args2)...); }
 
-  private:
+  protected:
+
     struct impl_base : public fc::retainable {
       virtual ~impl_base(){}
       virtual R call(Args...) = 0;
@@ -59,6 +44,8 @@ class function_impl {
 
       Functor func;
     };
+    function( const fc::shared_ptr<impl_base>& f ):func(f){}
+    function( fc::shared_ptr<impl_base>&& f ):func(fc::move(f)){}
 
     fc::shared_ptr<impl_base> func;
 };
@@ -71,44 +58,50 @@ class function_impl {
  *
  *  TODO: Small functions are allocated on the stack, large functors are
  *  allocated on the heap.
+ *
+ *  Simply including boost/function adds an additional 0.6 seconds to every 
+ *  object file compared to using fc/function.
+ *
+ *  Including <functional> on the other hand adds a mere 0.05 
+ *  seconds to every object file compared to fc/function.
  */
-template<typename Signature = void()>
-class function : public function_impl<void> {
-  public:
-    template<typename U>
-    function( U&& u ):function_impl<void>( fc::forward<U>(u) ){}
-    using function_impl::operator=;
-};
-
 template<typename R>
-class function<R()> : public function_impl<R> {
+class function<R()> : public function<R> {
   public:
+    function(){}
     template<typename U>
-    function( U&& u ):function_impl<R>( fc::forward<U>(u) ){}
+    function( U&& u ) { *this = fc::forward<U>(u); }
-    using function_impl<R>::operator=;
+    using function<R>::operator=;
 };
 
 template<typename R,typename A1>
-class function<R(A1)> : public function_impl<R,A1> {
+class function<R(A1)> : public function<R,A1> {
   public:
+    function(){}
     template<typename U>
-    function( U&& u ):function_impl<R,A1>( fc::forward<U>(u) ){}
+    function( U&& u ) { *this = fc::forward<U>(u); }
-    using function_impl<R,A1>::operator=;
+    //using function<R,A1>::operator=;
 };
 
 template<typename R,typename A1,typename A2>
-class function<R(A1,A2)> : public function_impl<R,A1,A2> {
+class function<R(A1,A2)> : public function<R,A1,A2> {
   public:
+    function(){}
     template<typename U>
-    function( U&& u ):function_impl<R,A1,A2>( fc::forward<U>(u) ){}
+    function( U&& u ):function<R,A1,A2>( fc::forward<U>(u) ){}
-    using function_impl<R,A1,A2>::operator=;
+    function( const function& c ):function<R,A1,A2>(c.func){}
+    using function<R,A1,A2>::operator=;
 };
 
-
+template<typename R,typename A1,typename A2, typename A3>
-
+class function<R(A1,A2,A3)> : public function<R,A1,A2,A3> {
-
+  public:
-
+    function(){}
+    template<typename U>
+    function( U&& u ):function<R,A1,A2,A3>( fc::forward<U>(u) ){}
+    function( const function& c ):function<R,A1,A2,A3>(c.func){}
+    using function<R,A1,A2,A3>::operator=;
+};
 
 }
 
-#endif // _FC_FUNCTION_HPP_

include/fc/ptr.hpp

@@ -0,0 +1,90 @@
+#pragma once 
+#include <fc/function.hpp>
+#include <fc/future.hpp>
+
+namespace fc {
+  
+  namespace detail {
+    struct identity_member { 
+        // TODO: enumerate all method patterns
+        template<typename R, typename C, typename P>
+        static fc::function<R()> functor( P&& p, R (C::*mem_func)() ) {
+          return [=](){ return (p->*mem_func)(); };
+        }
+        
+        template<typename R, typename C, typename A1, typename P>
+        static fc::function<R(A1)> functor( P&& p, R (C::*mem_func)(A1) ) {
+          return [=](A1 a1){ return (p->*mem_func)(a1); };
+        }
+    };
+
+    template< typename Interface, typename Transform = detail::identity_member >
+    struct vtable{};
+    
+    template<typename ThisPtr>
+    struct vtable_visitor {
+        template<typename U>
+        vtable_visitor( U&& u ):_this( fc::forward<U>(u) ){}
+    
+        template<typename Function, typename MemberPtr>
+        void operator()( const char* name, Function& memb, MemberPtr m )const {
+          memb = identity_member::functor( _this, m );
+        }
+        ThisPtr _this;
+    };
+  } // namespace detail
+
+  template<typename Interface, typename Transform = detail::identity_member >
+  class ptr {
+    public:
+      typedef detail::vtable<Interface,Transform> vtable_type;
+
+      ptr(){}
+
+      template<typename InterfaceType>
+      ptr( InterfaceType* p )
+      :_vtable( new vtable_type() ) {
+          _vtable->template visit<InterfaceType>( detail::vtable_visitor<InterfaceType*>(p) );
+      }
+
+      template<typename InterfaceType>
+      ptr( const fc::shared_ptr<InterfaceType>& p )
+      :_vtable( new vtable_type() ),_self(p){ 
+          _vtable->template visit<InterfaceType>( detail::vtable_visitor<InterfaceType*>(p.get()) );
+      }
+
+      vtable_type& operator*()            { return *_vtable; }
+      const vtable_type& operator*()const { return *_vtable; }
+
+      vtable_type* operator->()            { return _vtable.get(); }
+      const vtable_type* operator->()const { return _vtable.get(); }
+
+    protected:
+      fc::shared_ptr< vtable_type > _vtable;
+      fc::shared_ptr< fc::retainable >              _self;
+  };
+
+
+}
+
+#include <boost/preprocessor/seq/for_each.hpp>
+#include <boost/preprocessor/stringize.hpp>
+
+#define FC_STUB_VTABLE_DEFINE_MEMBER( r, data, elem ) \
+      decltype(Transform::functor( (data*)nullptr, &data::elem)) elem; 
+#define FC_STUB_VTABLE_DEFINE_VISIT( r, data, elem ) \
+        v( BOOST_PP_STRINGIZE(elem), elem, &T::elem ); \
+
+#define FC_STUB( CLASS, METHODS ) \
+namespace fc { namespace detail { \
+  template<typename Transform> \
+  struct vtable<test,Transform> : public fc::retainable { \
+    BOOST_PP_SEQ_FOR_EACH( FC_STUB_VTABLE_DEFINE_MEMBER, CLASS, METHODS ) \
+      template<typename T, typename Visitor> \
+      void visit( Visitor&& v ) { \
+        BOOST_PP_SEQ_FOR_EACH( FC_STUB_VTABLE_DEFINE_VISIT, CLASS, METHODS ) \
+      } \
+  }; \
+} } 
+//#undef FC_STUB_VTABLE_DEFINE_MEMBER
+//#undef FC_STUB_VTABLE_DEFINE_VISIT