The Tor Browser: security/sandbox/chromium/base/bind_internal.h@141e0f1194b1 (annotated)

security/sandbox/chromium/base/bind_internal.h@141e0f1194b1 (annotated)

security/sandbox/chromium/base/bind_internal.h

Wed, 31 Dec 2014 07:16:47 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:16:47 +0100
branch: TOR_BUG_9701
changeset 3: 141e0f1194b1
permissions: -rw-r--r--

Revert simplistic fix pending revisit of Mozilla integration attempt.

 // This file was GENERATED by command:
 //     pump.py bind_internal.h.pump
 // DO NOT EDIT BY HAND!!!
 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #ifndef BASE_BIND_INTERNAL_H_
 #define BASE_BIND_INTERNAL_H_
 #include "base/bind_helpers.h"
 #include "base/callback_internal.h"
 #include "base/memory/raw_scoped_refptr_mismatch_checker.h"
 #include "base/memory/weak_ptr.h"
 #include "base/template_util.h"
 #include "build/build_config.h"
 #if defined(OS_WIN)
 #include "base/bind_internal_win.h"
 #endif
 namespace base {
 namespace internal {
 // See base/callback.h for user documentation.
 //
 //
 // CONCEPTS:
 //  Runnable -- A type (really a type class) that has a single Run() method
 //              and a RunType typedef that corresponds to the type of Run().
 //              A Runnable can declare that it should treated like a method
 //              call by including a typedef named IsMethod.  The value of
 //              this typedef is NOT inspected, only the existence.  When a
 //              Runnable declares itself a method, Bind() will enforce special
 //              refcounting + WeakPtr handling semantics for the first
 //              parameter which is expected to be an object.
 //  Functor -- A copyable type representing something that should be called.
 //             All function pointers, Callback<>, and Runnables are functors
 //             even if the invocation syntax differs.
 //  RunType -- A function type (as opposed to function _pointer_ type) for
 //             a Run() function.  Usually just a convenience typedef.
 //  (Bound)ArgsType -- A function type that is being (ab)used to store the
 //                     types of set of arguments.  The "return" type is always
 //                     void here.  We use this hack so that we do not need
 //                     a new type name for each arity of type. (eg.,
 //                     BindState1, BindState2).  This makes forward
 //                     declarations and friending much much easier.
 //
 // Types:
 //  RunnableAdapter<> -- Wraps the various "function" pointer types into an
 //                       object that adheres to the Runnable interface.
 //                       There are |3*ARITY| RunnableAdapter types.
 //  FunctionTraits<> -- Type traits that unwrap a function signature into a
 //                      a set of easier to use typedefs.  Used mainly for
 //                      compile time asserts.
 //                      There are |ARITY| FunctionTraits types.
 //  ForceVoidReturn<> -- Helper class for translating function signatures to
 //                       equivalent forms with a "void" return type.
 //                    There are |ARITY| ForceVoidReturn types.
 //  FunctorTraits<> -- Type traits used determine the correct RunType and
 //                     RunnableType for a Functor.  This is where function
 //                     signature adapters are applied.
 //                    There are |ARITY| ForceVoidReturn types.
 //  MakeRunnable<> -- Takes a Functor and returns an object in the Runnable
 //                    type class that represents the underlying Functor.
 //                    There are |O(1)| MakeRunnable types.
 //  InvokeHelper<> -- Take a Runnable + arguments and actully invokes it.
 // Handle the differing syntaxes needed for WeakPtr<> support,
 //                    and for ignoring return values.  This is separate from
 //                    Invoker to avoid creating multiple version of Invoker<>
 //                    which grows at O(n^2) with the arity.
 //                    There are |k*ARITY| InvokeHelper types.
 //  Invoker<> -- Unwraps the curried parameters and executes the Runnable.
 //               There are |(ARITY^2 + ARITY)/2| Invoketypes.
 //  BindState<> -- Stores the curried parameters, and is the main entry point
 //                 into the Bind() system, doing most of the type resolution.
 //                 There are ARITY BindState types.
 // RunnableAdapter<>
 //
 // The RunnableAdapter<> templates provide a uniform interface for invoking
 // a function pointer, method pointer, or const method pointer. The adapter
 // exposes a Run() method with an appropriate signature. Using this wrapper
 // allows for writing code that supports all three pointer types without
 // undue repetition.  Without it, a lot of code would need to be repeated 3
 // times.
 //
 // For method pointers and const method pointers the first argument to Run()
 // is considered to be the received of the method.  This is similar to STL's
 // mem_fun().
 //
 // This class also exposes a RunType typedef that is the function type of the
 // Run() function.
 //
 // If and only if the wrapper contains a method or const method pointer, an
 // IsMethod typedef is exposed.  The existence of this typedef (NOT the value)
 // marks that the wrapper should be considered a method wrapper.
 template <typename Functor>
 class RunnableAdapter;
 // Function: Arity 0.
 template <typename R>
 class RunnableAdapter<R(*)()> {
  public:
   typedef R (RunType)();
   explicit RunnableAdapter(R(*function)())
       : function_(function) {
   }
   R Run() {
     return function_();
   }
  private:
   R (*function_)();
 };
 // Method: Arity 0.
 template <typename R, typename T>
 class RunnableAdapter<R(T::*)()> {
  public:
   typedef R (RunType)(T*);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)())
       : method_(method) {
   }
   R Run(T* object) {
     return (object->*method_)();
   }
  private:
   R (T::*method_)();
 };
 // Const Method: Arity 0.
 template <typename R, typename T>
 class RunnableAdapter<R(T::*)() const> {
  public:
   typedef R (RunType)(const T*);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)() const)
       : method_(method) {
   }
   R Run(const T* object) {
     return (object->*method_)();
   }
  private:
   R (T::*method_)() const;
 };
 // Function: Arity 1.
 template <typename R, typename A1>
 class RunnableAdapter<R(*)(A1)> {
  public:
   typedef R (RunType)(A1);
   explicit RunnableAdapter(R(*function)(A1))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1) {
     return function_(CallbackForward(a1));
   }
  private:
   R (*function_)(A1);
 };
 // Method: Arity 1.
 template <typename R, typename T, typename A1>
 class RunnableAdapter<R(T::*)(A1)> {
  public:
   typedef R (RunType)(T*, A1);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1) {
     return (object->*method_)(CallbackForward(a1));
   }
  private:
   R (T::*method_)(A1);
 };
 // Const Method: Arity 1.
 template <typename R, typename T, typename A1>
 class RunnableAdapter<R(T::*)(A1) const> {
  public:
   typedef R (RunType)(const T*, A1);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1) {
     return (object->*method_)(CallbackForward(a1));
   }
  private:
   R (T::*method_)(A1) const;
 };
 // Function: Arity 2.
 template <typename R, typename A1, typename A2>
 class RunnableAdapter<R(*)(A1, A2)> {
  public:
   typedef R (RunType)(A1, A2);
   explicit RunnableAdapter(R(*function)(A1, A2))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2) {
     return function_(CallbackForward(a1), CallbackForward(a2));
   }
  private:
   R (*function_)(A1, A2);
 };
 // Method: Arity 2.
 template <typename R, typename T, typename A1, typename A2>
 class RunnableAdapter<R(T::*)(A1, A2)> {
  public:
   typedef R (RunType)(T*, A1, A2);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2));
   }
  private:
   R (T::*method_)(A1, A2);
 };
 // Const Method: Arity 2.
 template <typename R, typename T, typename A1, typename A2>
 class RunnableAdapter<R(T::*)(A1, A2) const> {
  public:
   typedef R (RunType)(const T*, A1, A2);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2));
   }
  private:
   R (T::*method_)(A1, A2) const;
 };
 // Function: Arity 3.
 template <typename R, typename A1, typename A2, typename A3>
 class RunnableAdapter<R(*)(A1, A2, A3)> {
  public:
   typedef R (RunType)(A1, A2, A3);
   explicit RunnableAdapter(R(*function)(A1, A2, A3))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3) {
     return function_(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3));
   }
  private:
   R (*function_)(A1, A2, A3);
 };
 // Method: Arity 3.
 template <typename R, typename T, typename A1, typename A2, typename A3>
 class RunnableAdapter<R(T::*)(A1, A2, A3)> {
  public:
   typedef R (RunType)(T*, A1, A2, A3);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3));
   }
  private:
   R (T::*method_)(A1, A2, A3);
 };
 // Const Method: Arity 3.
 template <typename R, typename T, typename A1, typename A2, typename A3>
 class RunnableAdapter<R(T::*)(A1, A2, A3) const> {
  public:
   typedef R (RunType)(const T*, A1, A2, A3);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3));
   }
  private:
   R (T::*method_)(A1, A2, A3) const;
 };
 // Function: Arity 4.
 template <typename R, typename A1, typename A2, typename A3, typename A4>
 class RunnableAdapter<R(*)(A1, A2, A3, A4)> {
  public:
   typedef R (RunType)(A1, A2, A3, A4);
   explicit RunnableAdapter(R(*function)(A1, A2, A3, A4))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4) {
     return function_(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4));
   }
  private:
   R (*function_)(A1, A2, A3, A4);
 };
 // Method: Arity 4.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4)> {
  public:
   typedef R (RunType)(T*, A1, A2, A3, A4);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4);
 };
 // Const Method: Arity 4.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4) const> {
  public:
   typedef R (RunType)(const T*, A1, A2, A3, A4);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4) const;
 };
 // Function: Arity 5.
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5>
 class RunnableAdapter<R(*)(A1, A2, A3, A4, A5)> {
  public:
   typedef R (RunType)(A1, A2, A3, A4, A5);
   explicit RunnableAdapter(R(*function)(A1, A2, A3, A4, A5))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5) {
     return function_(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5));
   }
  private:
   R (*function_)(A1, A2, A3, A4, A5);
 };
 // Method: Arity 5.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5)> {
  public:
   typedef R (RunType)(T*, A1, A2, A3, A4, A5);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5);
 };
 // Const Method: Arity 5.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5) const> {
  public:
   typedef R (RunType)(const T*, A1, A2, A3, A4, A5);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5) const;
 };
 // Function: Arity 6.
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6>
 class RunnableAdapter<R(*)(A1, A2, A3, A4, A5, A6)> {
  public:
   typedef R (RunType)(A1, A2, A3, A4, A5, A6);
   explicit RunnableAdapter(R(*function)(A1, A2, A3, A4, A5, A6))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6) {
     return function_(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6));
   }
  private:
   R (*function_)(A1, A2, A3, A4, A5, A6);
 };
 // Method: Arity 6.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5, typename A6>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5, A6)> {
  public:
   typedef R (RunType)(T*, A1, A2, A3, A4, A5, A6);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5, A6))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5, A6);
 };
 // Const Method: Arity 6.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5, typename A6>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5, A6) const> {
  public:
   typedef R (RunType)(const T*, A1, A2, A3, A4, A5, A6);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5, A6) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5, A6) const;
 };
 // Function: Arity 7.
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6, typename A7>
 class RunnableAdapter<R(*)(A1, A2, A3, A4, A5, A6, A7)> {
  public:
   typedef R (RunType)(A1, A2, A3, A4, A5, A6, A7);
   explicit RunnableAdapter(R(*function)(A1, A2, A3, A4, A5, A6, A7))
       : function_(function) {
   }
   R Run(typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6,
       typename CallbackParamTraits<A7>::ForwardType a7) {
     return function_(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6), CallbackForward(a7));
   }
  private:
   R (*function_)(A1, A2, A3, A4, A5, A6, A7);
 };
 // Method: Arity 7.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5, typename A6, typename A7>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5, A6, A7)> {
  public:
   typedef R (RunType)(T*, A1, A2, A3, A4, A5, A6, A7);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5, A6, A7))
       : method_(method) {
   }
   R Run(T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6,
       typename CallbackParamTraits<A7>::ForwardType a7) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6), CallbackForward(a7));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5, A6, A7);
 };
 // Const Method: Arity 7.
 template <typename R, typename T, typename A1, typename A2, typename A3,
     typename A4, typename A5, typename A6, typename A7>
 class RunnableAdapter<R(T::*)(A1, A2, A3, A4, A5, A6, A7) const> {
  public:
   typedef R (RunType)(const T*, A1, A2, A3, A4, A5, A6, A7);
   typedef true_type IsMethod;
   explicit RunnableAdapter(R(T::*method)(A1, A2, A3, A4, A5, A6, A7) const)
       : method_(method) {
   }
   R Run(const T* object, typename CallbackParamTraits<A1>::ForwardType a1,
       typename CallbackParamTraits<A2>::ForwardType a2,
       typename CallbackParamTraits<A3>::ForwardType a3,
       typename CallbackParamTraits<A4>::ForwardType a4,
       typename CallbackParamTraits<A5>::ForwardType a5,
       typename CallbackParamTraits<A6>::ForwardType a6,
       typename CallbackParamTraits<A7>::ForwardType a7) {
     return (object->*method_)(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6), CallbackForward(a7));
   }
  private:
   R (T::*method_)(A1, A2, A3, A4, A5, A6, A7) const;
 };
 // FunctionTraits<>
 //
 // Breaks a function signature apart into typedefs for easier introspection.
 template <typename Sig>
 struct FunctionTraits;
 template <typename R>
 struct FunctionTraits<R()> {
   typedef R ReturnType;
 };
 template <typename R, typename A1>
 struct FunctionTraits<R(A1)> {
   typedef R ReturnType;
   typedef A1 A1Type;
 };
 template <typename R, typename A1, typename A2>
 struct FunctionTraits<R(A1, A2)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
 };
 template <typename R, typename A1, typename A2, typename A3>
 struct FunctionTraits<R(A1, A2, A3)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
   typedef A3 A3Type;
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4>
 struct FunctionTraits<R(A1, A2, A3, A4)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
   typedef A3 A3Type;
   typedef A4 A4Type;
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5>
 struct FunctionTraits<R(A1, A2, A3, A4, A5)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
   typedef A3 A3Type;
   typedef A4 A4Type;
   typedef A5 A5Type;
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6>
 struct FunctionTraits<R(A1, A2, A3, A4, A5, A6)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
   typedef A3 A3Type;
   typedef A4 A4Type;
   typedef A5 A5Type;
   typedef A6 A6Type;
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6, typename A7>
 struct FunctionTraits<R(A1, A2, A3, A4, A5, A6, A7)> {
   typedef R ReturnType;
   typedef A1 A1Type;
   typedef A2 A2Type;
   typedef A3 A3Type;
   typedef A4 A4Type;
   typedef A5 A5Type;
   typedef A6 A6Type;
   typedef A7 A7Type;
 };
 // ForceVoidReturn<>
 //
 // Set of templates that support forcing the function return type to void.
 template <typename Sig>
 struct ForceVoidReturn;
 template <typename R>
 struct ForceVoidReturn<R()> {
   typedef void(RunType)();
 };
 template <typename R, typename A1>
 struct ForceVoidReturn<R(A1)> {
   typedef void(RunType)(A1);
 };
 template <typename R, typename A1, typename A2>
 struct ForceVoidReturn<R(A1, A2)> {
   typedef void(RunType)(A1, A2);
 };
 template <typename R, typename A1, typename A2, typename A3>
 struct ForceVoidReturn<R(A1, A2, A3)> {
   typedef void(RunType)(A1, A2, A3);
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4>
 struct ForceVoidReturn<R(A1, A2, A3, A4)> {
   typedef void(RunType)(A1, A2, A3, A4);
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5>
 struct ForceVoidReturn<R(A1, A2, A3, A4, A5)> {
   typedef void(RunType)(A1, A2, A3, A4, A5);
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6>
 struct ForceVoidReturn<R(A1, A2, A3, A4, A5, A6)> {
   typedef void(RunType)(A1, A2, A3, A4, A5, A6);
 };
 template <typename R, typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6, typename A7>
 struct ForceVoidReturn<R(A1, A2, A3, A4, A5, A6, A7)> {
   typedef void(RunType)(A1, A2, A3, A4, A5, A6, A7);
 };
 // FunctorTraits<>
 //
 // See description at top of file.
 template <typename T>
 struct FunctorTraits {
   typedef RunnableAdapter<T> RunnableType;
   typedef typename RunnableType::RunType RunType;
 };
 template <typename T>
 struct FunctorTraits<IgnoreResultHelper<T> > {
   typedef typename FunctorTraits<T>::RunnableType RunnableType;
   typedef typename ForceVoidReturn<
       typename RunnableType::RunType>::RunType RunType;
 };
 template <typename T>
 struct FunctorTraits<Callback<T> > {
   typedef Callback<T> RunnableType;
   typedef typename Callback<T>::RunType RunType;
 };
 // MakeRunnable<>
 //
 // Converts a passed in functor to a RunnableType using type inference.
 template <typename T>
 typename FunctorTraits<T>::RunnableType MakeRunnable(const T& t) {
   return RunnableAdapter<T>(t);
 }
 template <typename T>
 typename FunctorTraits<T>::RunnableType
 MakeRunnable(const IgnoreResultHelper<T>& t) {
   return MakeRunnable(t.functor_);
 }
 template <typename T>
 const typename FunctorTraits<Callback<T> >::RunnableType&
 MakeRunnable(const Callback<T>& t) {
   DCHECK(!t.is_null());
   return t;
 }
 // InvokeHelper<>
 //
 // There are 3 logical InvokeHelper<> specializations: normal, void-return,
 // WeakCalls.
 //
 // The normal type just calls the underlying runnable.
 //
 // We need a InvokeHelper to handle void return types in order to support
 // IgnoreResult().  Normally, if the Runnable's RunType had a void return,
 // the template system would just accept "return functor.Run()" ignoring
 // the fact that a void function is being used with return. This piece of
 // sugar breaks though when the Runnable's RunType is not void.  Thus, we
 // need a partial specialization to change the syntax to drop the "return"
 // from the invocation call.
 //
 // WeakCalls similarly need special syntax that is applied to the first
 // argument to check if they should no-op themselves.
 template <bool IsWeakCall, typename ReturnType, typename Runnable,
           typename ArgsType>
 struct InvokeHelper;
 template <typename ReturnType, typename Runnable>
 struct InvokeHelper<false, ReturnType, Runnable,
     void()>  {
   static ReturnType MakeItSo(Runnable runnable) {
     return runnable.Run();
   }
 };
 template <typename Runnable>
 struct InvokeHelper<false, void, Runnable,
     void()>  {
   static void MakeItSo(Runnable runnable) {
     runnable.Run();
   }
 };
 template <typename ReturnType, typename Runnable,typename A1>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1) {
     return runnable.Run(CallbackForward(a1));
   }
 };
 template <typename Runnable,typename A1>
 struct InvokeHelper<false, void, Runnable,
     void(A1)>  {
   static void MakeItSo(Runnable runnable, A1 a1) {
     runnable.Run(CallbackForward(a1));
   }
 };
 template <typename Runnable, typename BoundWeakPtr>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get());
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2));
   }
 };
 template <typename Runnable,typename A1, typename A2>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2));
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2,
     typename A3>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2, A3)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3));
   }
 };
 template <typename Runnable,typename A1, typename A2, typename A3>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2, A3)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2), CallbackForward(a3));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2, typename A3>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2, A3)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2, A3 a3) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2), CallbackForward(a3));
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2,
     typename A3, typename A4>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2, A3, A4)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4));
   }
 };
 template <typename Runnable,typename A1, typename A2, typename A3, typename A4>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2, A3, A4)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2, typename A3,
     typename A4>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2, A3, A4)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2, A3 a3,
       A4 a4) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4));
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2,
     typename A3, typename A4, typename A5>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2, A3, A4, A5)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4,
       A5 a5) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5));
   }
 };
 template <typename Runnable,typename A1, typename A2, typename A3, typename A4,
     typename A5>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2, A3, A4, A5)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2, typename A3,
     typename A4, typename A5>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2, A3, A4, A5)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2, A3 a3,
       A4 a4, A5 a5) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5));
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2,
     typename A3, typename A4, typename A5, typename A6>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2, A3, A4, A5, A6)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4,
       A5 a5, A6 a6) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6));
   }
 };
 template <typename Runnable,typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2, A3, A4, A5, A6)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5,
       A6 a6) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5), CallbackForward(a6));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2, typename A3,
     typename A4, typename A5, typename A6>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2, A3, A4, A5, A6)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2, A3 a3,
       A4 a4, A5 a5, A6 a6) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5), CallbackForward(a6));
   }
 };
 template <typename ReturnType, typename Runnable,typename A1, typename A2,
     typename A3, typename A4, typename A5, typename A6, typename A7>
 struct InvokeHelper<false, ReturnType, Runnable,
     void(A1, A2, A3, A4, A5, A6, A7)>  {
   static ReturnType MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4,
       A5 a5, A6 a6, A7 a7) {
     return runnable.Run(CallbackForward(a1), CallbackForward(a2),
         CallbackForward(a3), CallbackForward(a4), CallbackForward(a5),
         CallbackForward(a6), CallbackForward(a7));
   }
 };
 template <typename Runnable,typename A1, typename A2, typename A3, typename A4,
     typename A5, typename A6, typename A7>
 struct InvokeHelper<false, void, Runnable,
     void(A1, A2, A3, A4, A5, A6, A7)>  {
   static void MakeItSo(Runnable runnable, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5,
       A6 a6, A7 a7) {
     runnable.Run(CallbackForward(a1), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5), CallbackForward(a6),
         CallbackForward(a7));
   }
 };
 template <typename Runnable, typename BoundWeakPtr, typename A2, typename A3,
     typename A4, typename A5, typename A6, typename A7>
 struct InvokeHelper<true, void, Runnable,
     void(BoundWeakPtr, A2, A3, A4, A5, A6, A7)>  {
   static void MakeItSo(Runnable runnable, BoundWeakPtr weak_ptr, A2 a2, A3 a3,
       A4 a4, A5 a5, A6 a6, A7 a7) {
     if (!weak_ptr.get()) {
       return;
     }
     runnable.Run(weak_ptr.get(), CallbackForward(a2), CallbackForward(a3),
         CallbackForward(a4), CallbackForward(a5), CallbackForward(a6),
         CallbackForward(a7));
   }
 };
 #if !defined(_MSC_VER)
 template <typename ReturnType, typename Runnable, typename ArgsType>
 struct InvokeHelper<true, ReturnType, Runnable, ArgsType> {
   // WeakCalls are only supported for functions with a void return type.
   // Otherwise, the function result would be undefined if the the WeakPtr<>
   // is invalidated.
   COMPILE_ASSERT(is_void<ReturnType>::value,
                  weak_ptrs_can_only_bind_to_methods_without_return_values);
 };
 #endif
 // Invoker<>
 //
 // See description at the top of the file.
 template <int NumBound, typename Storage, typename RunType>
 struct Invoker;
 // Arity 0 -> 0.
 template <typename StorageType, typename R>
 struct Invoker<0, StorageType, R()> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void()>
                ::MakeItSo(storage->runnable_);
   }
 };
 // Arity 1 -> 1.
 template <typename StorageType, typename R,typename X1>
 struct Invoker<0, StorageType, R(X1)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType);
   typedef R(UnboundRunType)(X1);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1));
   }
 };
 // Arity 1 -> 0.
 template <typename StorageType, typename R,typename X1>
 struct Invoker<1, StorageType, R(X1)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1));
   }
 };
 // Arity 2 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2>
 struct Invoker<0, StorageType, R(X1, X2)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType);
   typedef R(UnboundRunType)(X1, X2);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2));
   }
 };
 // Arity 2 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2>
 struct Invoker<1, StorageType, R(X1, X2)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType);
   typedef R(UnboundRunType)(X2);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2));
   }
 };
 // Arity 2 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2>
 struct Invoker<2, StorageType, R(X1, X2)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2));
   }
 };
 // Arity 3 -> 3.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3>
 struct Invoker<0, StorageType, R(X1, X2, X3)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType);
   typedef R(UnboundRunType)(X1, X2, X3);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3));
   }
 };
 // Arity 3 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3>
 struct Invoker<1, StorageType, R(X1, X2, X3)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType);
   typedef R(UnboundRunType)(X2, X3);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3));
   }
 };
 // Arity 3 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3>
 struct Invoker<2, StorageType, R(X1, X2, X3)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X3>::ForwardType);
   typedef R(UnboundRunType)(X3);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X3>::ForwardType x3) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X3>::ForwardType x3)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3));
   }
 };
 // Arity 3 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3>
 struct Invoker<3, StorageType, R(X1, X2, X3)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3));
   }
 };
 // Arity 4 -> 4.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4>
 struct Invoker<0, StorageType, R(X1, X2, X3, X4)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType);
   typedef R(UnboundRunType)(X1, X2, X3, X4);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4));
   }
 };
 // Arity 4 -> 3.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4>
 struct Invoker<1, StorageType, R(X1, X2, X3, X4)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType);
   typedef R(UnboundRunType)(X2, X3, X4);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4));
   }
 };
 // Arity 4 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4>
 struct Invoker<2, StorageType, R(X1, X2, X3, X4)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType);
   typedef R(UnboundRunType)(X3, X4);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4));
   }
 };
 // Arity 4 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4>
 struct Invoker<3, StorageType, R(X1, X2, X3, X4)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X4>::ForwardType);
   typedef R(UnboundRunType)(X4);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X4>::ForwardType x4) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X4>::ForwardType x4)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4));
   }
 };
 // Arity 4 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4>
 struct Invoker<4, StorageType, R(X1, X2, X3, X4)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4));
   }
 };
 // Arity 5 -> 5.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<0, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType);
   typedef R(UnboundRunType)(X1, X2, X3, X4, X5);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 5 -> 4.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<1, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType);
   typedef R(UnboundRunType)(X2, X3, X4, X5);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 5 -> 3.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<2, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType);
   typedef R(UnboundRunType)(X3, X4, X5);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 5 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<3, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType);
   typedef R(UnboundRunType)(X4, X5);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 5 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<4, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X5>::ForwardType);
   typedef R(UnboundRunType)(X5);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X5>::ForwardType x5) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X5>::ForwardType x5)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 5 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5>
 struct Invoker<5, StorageType, R(X1, X2, X3, X4, X5)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5));
   }
 };
 // Arity 6 -> 6.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<0, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X1, X2, X3, X4, X5, X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 5.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<1, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X2, X3, X4, X5, X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 4.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<2, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X3, X4, X5, X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 3.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<3, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X4, X5, X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<4, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X5, X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<5, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X6>::ForwardType);
   typedef R(UnboundRunType)(X6);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X6>::ForwardType x6) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X6>::ForwardType x6)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 6 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6>
 struct Invoker<6, StorageType, R(X1, X2, X3, X4, X5, X6)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typedef typename StorageType::Bound6UnwrapTraits Bound6UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     typename Bound6UnwrapTraits::ForwardType x6 =
         Bound6UnwrapTraits::Unwrap(storage->p6_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType,
                typename Bound6UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6));
   }
 };
 // Arity 7 -> 7.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<0, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X1>::ForwardType,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X1, X2, X3, X4, X5, X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X1>::ForwardType x1,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename CallbackParamTraits<X1>::ForwardType x1,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 6.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<1, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X2>::ForwardType,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X2, X3, X4, X5, X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X2>::ForwardType x2,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X2>::ForwardType x2,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 5.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<2, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X3>::ForwardType,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X3, X4, X5, X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X3>::ForwardType x3,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X3>::ForwardType x3,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 4.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<3, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X4>::ForwardType,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X4, X5, X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X4>::ForwardType x4,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X4>::ForwardType x4,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 3.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<4, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X5>::ForwardType,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X5, X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X5>::ForwardType x5,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X5>::ForwardType x5,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 2.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<5, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X6>::ForwardType,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X6, X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X6>::ForwardType x6,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X6>::ForwardType x6,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 1.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<6, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*,
       typename CallbackParamTraits<X7>::ForwardType);
   typedef R(UnboundRunType)(X7);
   static R Run(BindStateBase* base,
       typename CallbackParamTraits<X7>::ForwardType x7) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typedef typename StorageType::Bound6UnwrapTraits Bound6UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     typename Bound6UnwrapTraits::ForwardType x6 =
         Bound6UnwrapTraits::Unwrap(storage->p6_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType,
                typename Bound6UnwrapTraits::ForwardType,
                typename CallbackParamTraits<X7>::ForwardType x7)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // Arity 7 -> 0.
 template <typename StorageType, typename R,typename X1, typename X2,
     typename X3, typename X4, typename X5, typename X6, typename X7>
 struct Invoker<7, StorageType, R(X1, X2, X3, X4, X5, X6, X7)> {
   typedef R(RunType)(BindStateBase*);
   typedef R(UnboundRunType)();
   static R Run(BindStateBase* base) {
     StorageType* storage = static_cast<StorageType*>(base);
     // Local references to make debugger stepping easier. If in a debugger,
     // you really want to warp ahead and step through the
     // InvokeHelper<>::MakeItSo() call below.
     typedef typename StorageType::Bound1UnwrapTraits Bound1UnwrapTraits;
     typedef typename StorageType::Bound2UnwrapTraits Bound2UnwrapTraits;
     typedef typename StorageType::Bound3UnwrapTraits Bound3UnwrapTraits;
     typedef typename StorageType::Bound4UnwrapTraits Bound4UnwrapTraits;
     typedef typename StorageType::Bound5UnwrapTraits Bound5UnwrapTraits;
     typedef typename StorageType::Bound6UnwrapTraits Bound6UnwrapTraits;
     typedef typename StorageType::Bound7UnwrapTraits Bound7UnwrapTraits;
     typename Bound1UnwrapTraits::ForwardType x1 =
         Bound1UnwrapTraits::Unwrap(storage->p1_);
     typename Bound2UnwrapTraits::ForwardType x2 =
         Bound2UnwrapTraits::Unwrap(storage->p2_);
     typename Bound3UnwrapTraits::ForwardType x3 =
         Bound3UnwrapTraits::Unwrap(storage->p3_);
     typename Bound4UnwrapTraits::ForwardType x4 =
         Bound4UnwrapTraits::Unwrap(storage->p4_);
     typename Bound5UnwrapTraits::ForwardType x5 =
         Bound5UnwrapTraits::Unwrap(storage->p5_);
     typename Bound6UnwrapTraits::ForwardType x6 =
         Bound6UnwrapTraits::Unwrap(storage->p6_);
     typename Bound7UnwrapTraits::ForwardType x7 =
         Bound7UnwrapTraits::Unwrap(storage->p7_);
     return InvokeHelper<StorageType::IsWeakCall::value, R,
            typename StorageType::RunnableType,
            void(typename Bound1UnwrapTraits::ForwardType,
                typename Bound2UnwrapTraits::ForwardType,
                typename Bound3UnwrapTraits::ForwardType,
                typename Bound4UnwrapTraits::ForwardType,
                typename Bound5UnwrapTraits::ForwardType,
                typename Bound6UnwrapTraits::ForwardType,
                typename Bound7UnwrapTraits::ForwardType)>
                ::MakeItSo(storage->runnable_, CallbackForward(x1),
                    CallbackForward(x2), CallbackForward(x3),
                    CallbackForward(x4), CallbackForward(x5),
                    CallbackForward(x6), CallbackForward(x7));
   }
 };
 // BindState<>
 //
 // This stores all the state passed into Bind() and is also where most
 // of the template resolution magic occurs.
 //
 // Runnable is the functor we are binding arguments to.
 // RunType is type of the Run() function that the Invoker<> should use.
 // Normally, this is the same as the RunType of the Runnable, but it can
 // be different if an adapter like IgnoreResult() has been used.
 //
 // BoundArgsType contains the storage type for all the bound arguments by
 // (ab)using a function type.
 template <typename Runnable, typename RunType, typename BoundArgsType>
 struct BindState;
 template <typename Runnable, typename RunType>
 struct BindState<Runnable, RunType, void()> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef false_type IsWeakCall;
   typedef Invoker<0, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   explicit BindState(const Runnable& runnable)
       : runnable_(runnable) {
   }
   virtual ~BindState() {  }
   RunnableType runnable_;
 };
 template <typename Runnable, typename RunType, typename P1>
 struct BindState<Runnable, RunType, void(P1)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<1, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1)
       : runnable_(runnable),
         p1_(p1) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2>
 struct BindState<Runnable, RunType, void(P1, P2)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<2, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2,
     typename P3>
 struct BindState<Runnable, RunType, void(P1, P2, P3)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<3, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   typedef UnwrapTraits<P3> Bound3UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2, const P3& p3)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2),
         p3_(p3) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
   P3 p3_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2,
     typename P3, typename P4>
 struct BindState<Runnable, RunType, void(P1, P2, P3,
     P4)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<4, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   typedef UnwrapTraits<P3> Bound3UnwrapTraits;
   typedef UnwrapTraits<P4> Bound4UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2, const P3& p3,
       const P4& p4)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2),
         p3_(p3),
         p4_(p4) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
   P3 p3_;
   P4 p4_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2,
     typename P3, typename P4, typename P5>
 struct BindState<Runnable, RunType, void(P1, P2, P3, P4,
     P5)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<5, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   typedef UnwrapTraits<P3> Bound3UnwrapTraits;
   typedef UnwrapTraits<P4> Bound4UnwrapTraits;
   typedef UnwrapTraits<P5> Bound5UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2, const P3& p3,
       const P4& p4, const P5& p5)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2),
         p3_(p3),
         p4_(p4),
         p5_(p5) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
   P3 p3_;
   P4 p4_;
   P5 p5_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2,
     typename P3, typename P4, typename P5, typename P6>
 struct BindState<Runnable, RunType, void(P1, P2, P3, P4, P5,
     P6)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<6, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   typedef UnwrapTraits<P3> Bound3UnwrapTraits;
   typedef UnwrapTraits<P4> Bound4UnwrapTraits;
   typedef UnwrapTraits<P5> Bound5UnwrapTraits;
   typedef UnwrapTraits<P6> Bound6UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2, const P3& p3,
       const P4& p4, const P5& p5, const P6& p6)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2),
         p3_(p3),
         p4_(p4),
         p5_(p5),
         p6_(p6) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
   P3 p3_;
   P4 p4_;
   P5 p5_;
   P6 p6_;
 };
 template <typename Runnable, typename RunType, typename P1, typename P2,
     typename P3, typename P4, typename P5, typename P6, typename P7>
 struct BindState<Runnable, RunType, void(P1, P2, P3, P4, P5, P6,
     P7)> : public BindStateBase {
   typedef Runnable RunnableType;
   typedef IsWeakMethod<HasIsMethodTag<Runnable>::value, P1> IsWeakCall;
   typedef Invoker<7, BindState, RunType> InvokerType;
   typedef typename InvokerType::UnboundRunType UnboundRunType;
   // Convenience typedefs for bound argument types.
   typedef UnwrapTraits<P1> Bound1UnwrapTraits;
   typedef UnwrapTraits<P2> Bound2UnwrapTraits;
   typedef UnwrapTraits<P3> Bound3UnwrapTraits;
   typedef UnwrapTraits<P4> Bound4UnwrapTraits;
   typedef UnwrapTraits<P5> Bound5UnwrapTraits;
   typedef UnwrapTraits<P6> Bound6UnwrapTraits;
   typedef UnwrapTraits<P7> Bound7UnwrapTraits;
   BindState(const Runnable& runnable, const P1& p1, const P2& p2, const P3& p3,
       const P4& p4, const P5& p5, const P6& p6, const P7& p7)
       : runnable_(runnable),
         p1_(p1),
         p2_(p2),
         p3_(p3),
         p4_(p4),
         p5_(p5),
         p6_(p6),
         p7_(p7) {
     MaybeRefcount<HasIsMethodTag<Runnable>::value, P1>::AddRef(p1_);
   }
   virtual ~BindState() {    MaybeRefcount<HasIsMethodTag<Runnable>::value,
       P1>::Release(p1_);  }
   RunnableType runnable_;
   P1 p1_;
   P2 p2_;
   P3 p3_;
   P4 p4_;
   P5 p5_;
   P6 p6_;
   P7 p7_;
 };
 }  // namespace internal
 }  // namespace base
 #endif  // BASE_BIND_INTERNAL_H_

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security/sandbox/chromium/base/bind_internal.h@141e0f1194b1 (annotated)

security/sandbox/chromium/base/bind_internal.h