lyx_mirror/sigc++/macros/convert.h.m4

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dnl
dnl Convert Slot Templates
dnl
dnl Copyright (C) 1998-1999 Karl Nelson <kenelson@ece.ucdavis.edu>
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Library General Public
dnl License as published by the Free Software Foundation; either
dnl version 2 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Library General Public License for more details.
dnl
dnl You should have received a copy of the GNU Library General Public
dnl License along with this library; if not, write to the Free
dnl Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
dnl
// -*- c++ -*-
dnl Ignore the next line
/* This is a generated file, do not edit. Generated from __file__ */
include(template.macros.m4)
#ifndef __header__
#define __header__
/*
SigC::convert
-------------
convert() alters a Slot by assigning a conversion function
which can completely alter the parameter types of a slot.
Only convert functions for changing with same number of
arguments is compiled by default. See examples/custom_convert.h.m4
for details on how to build non standard ones.
Sample usage:
int my_string_to_char(Callback1<int,const char*> *d,const string &s)
int f(const char*);
string s=hello;
Slot1<int,const string &> s2=convert(slot(f),my_string_to_char);
s2(s);
*/
#include <sigc++/adaptor.h>
#ifdef SIGC_CXX_NAMESPACES
namespace SigC
{
#endif
dnl
dnl ADAPTOR_CONVERT_SLOT([P1..PN],[C0..CN])
dnl
define([ADAPTOR_CONVERT_SLOT],[dnl
/****************************************************************
***** Adaptor Convert Slot NUM($1)
****************************************************************/
ADAPTOR_CONVERT_SLOT_IMPL(R1,[$1],[$2])
#ifndef SIGC_CXX_VOID_RETURN
#ifdef SIGC_CXX_PARTIAL_SPEC
ADAPTOR_CONVERT_SLOT_IMPL(void,[$1],[$2])
#endif
#endif
template <LIST(class R1,1,ARG_CLASS($1),[$1],[
class R2],1,ARG_CLASS($2),[$2])>
__SLOT__(R1,[$1])
convert(const __SLOT__(R2,[$2]) &s,
[R1 (*func)](LIST([Callback]NUM($2)PROT(<LIST(R2,1,ARG_TYPE($2),[$2])>)*,1,ARG_TYPE($1),[$1])))
{return [AdaptorConvertSlot]NUM($1)[_]NUM($2)<LIST(R1,1,ARG_TYPE($1),[$1],[
R2],1,ARG_TYPE($2),[$2])>::create(s.obj(),func);
}
])dnl
dnl
dnl ADAPTOR_CONVERT_SLOT_IMPL(R,[P1..PN],[C0..CN])
dnl
define([ADAPTOR_CONVERT_SLOT_IMPL],[dnl
LINE(]__line__[)dnl
ifelse($1,void,[dnl
template <LIST(ARG_CLASS($2),[$2],[
class R2],1,ARG_CLASS($3),[$3])>
struct [AdaptorConvertSlot]NUM($2)[_]NUM($3)
<LIST(void,1,ARG_TYPE($2),[$2],[
R2],1,ARG_TYPE($3),[$3])>
: public AdaptorSlot_
],[dnl
template <LIST(class $1,1,ARG_CLASS($2),[$2],[
class R2],1,ARG_CLASS($3),[$3])>
struct [AdaptorConvertSlot]NUM($2)[_]NUM($3): public AdaptorSlot_
])dnl
{TYPEDEF_RTYPE($1,RType)
typedef __SLOT__($1,[$2]) SlotType;
typedef __SLOT__(R2,[$3]) InSlotType;
typedef typename InSlotType::Callback Callback;
typedef RType (*Func) (LIST(Callback*,1,ARG_TYPE($2),[$2]));
typedef $1 (*InFunc)(LIST(Callback*,1,ARG_TYPE($2),[$2]));
typedef CallDataObj3<typename SlotType::Func,Callback,Func> CallData;
static RType callback(LIST(void* d,1,ARG_BOTH($2),[$2]))
{
CallData* data=(CallData*)d;
ifelse($1,void,,return) (data->func)(LIST(data->obj,1,ARG_NAME($2),[$2]));
}
static SlotData* create(SlotData *s,InFunc func)
{
SlotData* tmp=(SlotData*)s;
AdaptorNode *node=new AdaptorNode();
copy_callback(tmp,node);
CallData &data=reinterpret_cast<CallData&>(tmp->data_);
data.callback=&callback;
data.func=(Func)func;
data.obj=(Callback*)&(node->data_);
return tmp;
}
};
])dnl
ADAPTOR_CONVERT_SLOT(ARGS(P,1),ARGS(Q,1))
ADAPTOR_CONVERT_SLOT(ARGS(P,2),ARGS(Q,2))
ADAPTOR_CONVERT_SLOT(ARGS(P,3),ARGS(Q,3))
#ifdef SIGC_CXX_NAMESPACES
} // namespace
#endif
#endif