digitalmars.D.learn - C++ MSG_MAP marcro -> Mixin

BLS (45/45) Sep 19 2007 Hi,

BLS (3/55) Sep 19 2007 And I really wonder myself how to (probabely) replace this stuff using

Daniel Keep (20/75) Sep 19 2007 With enough CTFE, you could do it. I've actually been thinking about

BLS (27/110) Sep 20 2007 Thanks Daniel,

BLS (14/133) Sep 20 2007 Okay, I think I have to works with delegates instead, bause I have to

BLS <nanali nospam-wanadoo.fr> writes:

Hi,
MFC and wxWidgets are supporting MESSAGEMAPS macros. I would like to 
port them to D.

class CMsg
{
public:

	virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM 
lParam,LRESULT lResult)
	{
		return FALSE;
	}
};

Okay, here iy goes ....
#define BEGIN_MSG_MAP() \
public: \
	virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM 
lParam,LRESULT& lResult) \
	{ \
		
#define ON_MESSAGE(Msg, vfunc) \
	if(uID == Msg) \
	{ \
		vfunc(uID, wParam, lParam); \
		lResult = 0; \
		return TRUE; \
	}

#define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
	if(uID >= MsgF && uID <= MsgL) \
	{ \
		lResult=vfunc(uID, wParam, lParam); \
		return TRUE; \
	}

#define ON_COMMAND_CONTROL(iControl, iEvent, vfunc) \
	if(uID == WM_COMMAND && iControl == LOWORD(wParam) && iEvent == 
HIWORD(wParam)) \
	{ \
		vfunc(HIWORD(wParam), LOWORD(wParam), (HWND)lParam); \
		lResult = 0; \
		return TRUE; \
	}

and so on....

Is it possible to replace this C++ Macros with D2 Mixins and compile 
time manipulation of strings ?
How ?
Thanks, Bjoern

Sep 19 2007

BLS <nanali nospam-wanadoo.fr> writes:

BLS schrieb:
 Hi,
 MFC and wxWidgets are supporting MESSAGEMAPS macros. I would like to 
 port them to D.
 
 class CMsg
 {
 public:
 
     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM 
 lParam,LRESULT lResult)
     {
         return FALSE;
     }
 };
 
 Okay, here iy goes ....
 #define BEGIN_MSG_MAP() \
 public: \
     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM 
 lParam,LRESULT& lResult) \
     { \
        
 #define ON_MESSAGE(Msg, vfunc) \
     if(uID == Msg) \
     { \
         vfunc(uID, wParam, lParam); \
         lResult = 0; \
         return TRUE; \
     }
 
 #define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
     if(uID >= MsgF && uID <= MsgL) \
     { \
         lResult=vfunc(uID, wParam, lParam); \
         return TRUE; \
     }
 
 #define ON_COMMAND_CONTROL(iControl, iEvent, vfunc) \
     if(uID == WM_COMMAND && iControl == LOWORD(wParam) && iEvent == 
 HIWORD(wParam)) \
     { \
         vfunc(HIWORD(wParam), LOWORD(wParam), (HWND)lParam); \
         lResult = 0; \
         return TRUE; \
     }
 
 and so on....
 
 Is it possible to replace this C++ Macros with D2 Mixins and compile 
 time manipulation of strings ?
 How ?
 Thanks, Bjoern

And I really wonder myself how to (probabely) replace this stuff using 
Tango's Signal Slot implementation.... but I guess I miss something;

Sep 19 2007

Daniel Keep <daniel.keep.lists gmail.com> writes:

BLS wrote:
 BLS schrieb:
 Hi,
 MFC and wxWidgets are supporting MESSAGEMAPS macros. I would like to
 port them to D.

 class CMsg
 {
 public:

     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT lResult)
     {
         return FALSE;
     }
 };

 Okay, here iy goes ....
 #define BEGIN_MSG_MAP() \
 public: \
     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT& lResult) \
     { \
        #define ON_MESSAGE(Msg, vfunc) \
     if(uID == Msg) \
     { \
         vfunc(uID, wParam, lParam); \
         lResult = 0; \
         return TRUE; \
     }

 #define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
     if(uID >= MsgF && uID <= MsgL) \
     { \
         lResult=vfunc(uID, wParam, lParam); \
         return TRUE; \
     }

 #define ON_COMMAND_CONTROL(iControl, iEvent, vfunc) \
     if(uID == WM_COMMAND && iControl == LOWORD(wParam) && iEvent ==
 HIWORD(wParam)) \
     { \
         vfunc(HIWORD(wParam), LOWORD(wParam), (HWND)lParam); \
         lResult = 0; \
         return TRUE; \
     }

 and so on....

 Is it possible to replace this C++ Macros with D2 Mixins and compile
 time manipulation of strings ?
 How ?
 Thanks, Bjoern

 
 And I really wonder myself how to (probabely) replace this stuff using
 Tango's Signal Slot implementation.... but I guess I miss something;

With enough CTFE, you could do it.  I've actually been thinking about
making a generator ctfe compiler (but haven't got *any* free time at the
moment).

If I were doing this, I'd probably try something along these lines:

mixin(wxMsgMap(`
	on(id1) handler1;
	on(id2) handler2;
	on(id3..id6) handler3;
`));

Parsing that shouldn't be too difficult.  Of course, there are other
ways of constructing this:

mixin wxMsgMap!(
    OnMessage!(id1, handler1),
    OnMessage!(id2, handler2),
    OnMessage!(id3, id6, handler3)
);

Where wxMsgMap takes a tuple of templated OnMessage structs.

Just some ideas.

	-- Daniel

Sep 19 2007

BLS <nanali nospam-wanadoo.fr> writes:

Daniel Keep schrieb:
 
 BLS wrote:
 BLS schrieb:
 Hi,
 MFC and wxWidgets are supporting MESSAGEMAPS macros. I would like to
 port them to D.

 class CMsg
 {
 public:

     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT lResult)
     {
         return FALSE;
     }
 };

 Okay, here iy goes ....
 #define BEGIN_MSG_MAP() \
 public: \
     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT& lResult) \
     { \
        #define ON_MESSAGE(Msg, vfunc) \
     if(uID == Msg) \
     { \
         vfunc(uID, wParam, lParam); \
         lResult = 0; \
         return TRUE; \
     }

 #define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
     if(uID >= MsgF && uID <= MsgL) \
     { \
         lResult=vfunc(uID, wParam, lParam); \
         return TRUE; \
     }

 #define ON_COMMAND_CONTROL(iControl, iEvent, vfunc) \
     if(uID == WM_COMMAND && iControl == LOWORD(wParam) && iEvent ==
 HIWORD(wParam)) \
     { \
         vfunc(HIWORD(wParam), LOWORD(wParam), (HWND)lParam); \
         lResult = 0; \
         return TRUE; \
     }

 and so on....

 Is it possible to replace this C++ Macros with D2 Mixins and compile
 time manipulation of strings ?
 How ?
 Thanks, Bjoern

 And I really wonder myself how to (probabely) replace this stuff using
 Tango's Signal Slot implementation.... but I guess I miss something;

 
 With enough CTFE, you could do it.  I've actually been thinking about
 making a generator ctfe compiler (but haven't got *any* free time at the
 moment).
 
 If I were doing this, I'd probably try something along these lines:
 
 mixin(wxMsgMap(`
 	on(id1) handler1;
 	on(id2) handler2;
 	on(id3..id6) handler3;
 `));
 
 Parsing that shouldn't be too difficult.  Of course, there are other
 ways of constructing this:
 
 mixin wxMsgMap!(
     OnMessage!(id1, handler1),
     OnMessage!(id2, handler2),
     OnMessage!(id3, id6, handler3)
 );
 
 Where wxMsgMap takes a tuple of templated OnMessage structs.
 
 Just some ideas.
 
 	-- Daniel

Thanks Daniel,
I am afraid I am not able to follow your suggestion...Can you figure it 
out please ? // I mean your second solution

However, let's say I'll use D template mixins instead of C macros

// The known parameters as follows
virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
lParam,LRESULT lResult)

So :
#define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
      if(uID >= MsgF && uID <= MsgL) \
      { \
         lResult=vfunc(uID, wParam, lParam); \
          return TRUE; \
      }


// Replaced with Template Mixin

Template ON_MESSAGE_RANGE(M1, M2, F) (M1 MsgF, M2 MsgL, F function(...) dg )
{
     typeof(dg) dg_m;
     if(uID >= MsgF && uID <= MsgL)
      {
         lResult = dg_m(uID, wParam, lParam);
          return TRUE;
      }
}

is a valid ?  I guess - F function(...) dg is not.
Bjoern

Sep 20 2007

BLS <nanali nospam-wanadoo.fr> writes:

BLS schrieb:
 Daniel Keep schrieb:
 BLS wrote:
 BLS schrieb:
 Hi,
 MFC and wxWidgets are supporting MESSAGEMAPS macros. I would like to
 port them to D.

 class CMsg
 {
 public:

     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT lResult)
     {
         return FALSE;
     }
 };

 Okay, here iy goes ....
 #define BEGIN_MSG_MAP() \
 public: \
     virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT& lResult) \
     { \
        #define ON_MESSAGE(Msg, vfunc) \
     if(uID == Msg) \
     { \
         vfunc(uID, wParam, lParam); \
         lResult = 0; \
         return TRUE; \
     }

 #define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
     if(uID >= MsgF && uID <= MsgL) \
     { \
         lResult=vfunc(uID, wParam, lParam); \
         return TRUE; \
     }

 #define ON_COMMAND_CONTROL(iControl, iEvent, vfunc) \
     if(uID == WM_COMMAND && iControl == LOWORD(wParam) && iEvent ==
 HIWORD(wParam)) \
     { \
         vfunc(HIWORD(wParam), LOWORD(wParam), (HWND)lParam); \
         lResult = 0; \
         return TRUE; \
     }

 and so on....

 Is it possible to replace this C++ Macros with D2 Mixins and compile
 time manipulation of strings ?
 How ?
 Thanks, Bjoern

 And I really wonder myself how to (probabely) replace this stuff using
 Tango's Signal Slot implementation.... but I guess I miss something;

 With enough CTFE, you could do it.  I've actually been thinking about
 making a generator ctfe compiler (but haven't got *any* free time at the
 moment).

 If I were doing this, I'd probably try something along these lines:

 mixin(wxMsgMap(`
     on(id1) handler1;
     on(id2) handler2;
     on(id3..id6) handler3;
 `));

 Parsing that shouldn't be too difficult.  Of course, there are other
 ways of constructing this:

 mixin wxMsgMap!(
     OnMessage!(id1, handler1),
     OnMessage!(id2, handler2),
     OnMessage!(id3, id6, handler3)
 );

 Where wxMsgMap takes a tuple of templated OnMessage structs.

 Just some ideas.

     -- Daniel

 
 Thanks Daniel,
 I am afraid I am not able to follow your suggestion...Can you figure it 
 out please ? // I mean your second solution
 
 However, let's say I'll use D template mixins instead of C macros
 
 // The known parameters as follows
 virtual BOOL NewMsgProc(HWND hWnd, UINT uID, WPARAM wParam, LPARAM
 lParam,LRESULT lResult)
 
 So :
 #define ON_MESSAGE_RANGE(MsgF, MsgL, vfunc) \
      if(uID >= MsgF && uID <= MsgL) \
      { \
         lResult=vfunc(uID, wParam, lParam); \
          return TRUE; \
      }
 
 
 // Replaced with Template Mixin
 
 Template ON_MESSAGE_RANGE(M1, M2, F) (M1 MsgF, M2 MsgL, F function(...) 
 dg )
 {
     typeof(dg) dg_m;
     if(uID >= MsgF && uID <= MsgL)
      {
         lResult = dg_m(uID, wParam, lParam);
          return TRUE;
      }
 }
 
 is a valid ?  I guess - F function(...) dg is not.
 Bjoern

Okay, I think I have to works with delegates instead, bause I have to 
work on class-members.
probabely :

Template ON_MESSAGE_RANGE(M1, M2, D) (M1 MsgF, M2 MsgL, D delegate(...) dg )
{
     if(uID >= MsgF && uID <= MsgL)
      {
         lResult = dg(uID, wParam, lParam);
          return TRUE;
      }
}

Is a reasonable solution...
However, I am not sure.

Sep 20 2007

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digitalmars.D.learn - C++ MSG_MAP marcro -> Mixin