/usr/include/sigc++-1.2/sigc++/macros/hide.h.m4 is in libsigc++-1.2-dev 1.2.7-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | // -*- c++ -*-
dnl hide.h.m4 - hide one or two of the signal's arguments
dnl
// Copyright 2000, Martin Schulze <MHL.Schulze@t-online.de>
// Copyright 2001, Karl Einar Nelson
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
dnl
include(template.macros.m4)
#ifndef __header__
#define __header__
/** @defgroup hide
* SigC::hide() alters a Slot in that it adds one or two parameters
* whose values are ignored on invocation of the Slot.
* Thus you can discard one or more of the arguments of a Signal.
* You have to specify the type of the parameters to ignore as
* template arguments as in
* @code
* SigC::Slot1<void, int> slot1;
* SigC::Slot0<void> slot2 = SigC::hide<int>(slot1);
* @endcode
*
* SigC::hide_return() alters the Slot by
* dropping its return value, thus converting it to a void Slot.
*
* Simple sample usage:
*
* @code
* int f(int);
* SigC::Slot1<void, int> s = SigC::hide_return( slot(&f) );
* @endcode
*/
#include <sigc++/adaptor.h>
#ifdef SIGC_CXX_NAMESPACES
namespace SigC
{
#endif
dnl
dnl ADAPTOR_HIDE(R,[P1..PN],[H1..HM])
dnl
define([ADAPTOR_HIDE],[dnl
template <LIST(class R,ARG_CLASS($1),ARG_CLASS($2))>
struct [AdaptorHide]NUM($1)[_]NUM($2)_
{
typedef typename Trait<R>::type RType;
static RType proxy(LIST(ARG_REF($1),ARG_REFTYPE($2),[void *data]))
{
AdaptorSlotNode& node = *(AdaptorSlotNode*)(data);
SlotNode* slot=static_cast<SlotNode*>(node.slot_.impl());
return ((typename __SLOT__(R,$1)::Proxy)(slot->proxy_))(LIST(ARG_NAME($1),slot));
}
};
/// @ingroup hide
template <LIST(ARG_CLASS($2), class R, ARG_CLASS($1))>
__SLOT__(R,[$1],[$2])
hide(const __SLOT__(R,$1)& s)
{
return new AdaptorSlotNode( (FuncPtr)(&[AdaptorHide]NUM($1)[_]NUM($2)_<LIST(R,ARG_TYPE($1),ARG_TYPE($2))>::proxy), s );
}
])dnl ADAPTOR_HIDE
ADAPTOR_HIDE(ARGS(P,0),ARGS(H,1))
ADAPTOR_HIDE(ARGS(P,0),ARGS(H,2))
ADAPTOR_HIDE(ARGS(P,1),ARGS(H,1))
ADAPTOR_HIDE(ARGS(P,1),ARGS(H,2))
ADAPTOR_HIDE(ARGS(P,2),ARGS(H,1))
ADAPTOR_HIDE(ARGS(P,2),ARGS(H,2))
ADAPTOR_HIDE(ARGS(P,3),ARGS(H,1))
ADAPTOR_HIDE(ARGS(P,3),ARGS(H,2))
ADAPTOR_HIDE(ARGS(P,4),ARGS(H,1))
#ifdef SIGC_CXX_NAMESPACES
} // namespace SigC
#endif
#endif // __header__
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