libstdc++-v3/testsuite/20_util/function/5.cc

   1 // { dg-do run { target c++11 } }
   2 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
   3 //
   4 // Copyright (C) 2005-2019 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 20.7.15 polymorphic function object wrapper
  22 #include <functional>
  23 #include <testsuite_hooks.h>
  24 #include <testsuite_tr1.h>
  25
  26 using namespace __gnu_test;
  27
  28 // Put member pointers into function<> wrappers
  29 void test05()
  30 {
  31   using std::function;
  32
  33   X x;
  34   x.bar = 17;
  35
  36   function<int(X&)> frm(&X::bar);
  37   VERIFY( frm );
  38   VERIFY( frm(x) == 17 );
  39   VERIFY( typeid(int X::*) == frm.target_type() );
  40   VERIFY( *frm.target<int X::*>() == &X::bar );
  41
  42   function<int(X&)> fr(&X::foo);
  43   VERIFY( fr );
  44   VERIFY( fr(x) == 1 );
  45   VERIFY( typeid(int (X::*)()) == fr.target_type() );
  46   VERIFY( *fr.target<int (X::*)()>() == &X::foo );
  47
  48   function<int(const X&)> frc(&X::foo_c);
  49   VERIFY( frc );
  50   VERIFY( frc(x) == 2 );
  51   VERIFY( typeid(int (X::*)() const) == frc.target_type() );
  52   VERIFY( *frc.target<int (X::*)() const >() == &X::foo_c );
  53
  54   function<int(volatile X&)> frv(&X::foo_v);
  55   VERIFY( frv );
  56   VERIFY( frv(x) == 3 );
  57   VERIFY( typeid(int (X::*)() volatile) == frv.target_type() );
  58   VERIFY( *frv.target<int (X::*)() volatile >() == &X::foo_v );
  59   VERIFY( frv.target<int (X::*)() const volatile>() == 0 );
  60
  61   function<int(const volatile X&)> frcv(&X::foo_cv);
  62   VERIFY( frcv );
  63   VERIFY( frcv(x) == 4 );
  64   VERIFY( typeid(int (X::*)() const volatile) == frcv.target_type() );
  65   VERIFY( *frcv.target<int (X::*)() const volatile >() == &X::foo_cv );
  66   VERIFY( frcv.target<int (X::*)() const>() == 0 );
  67
  68   function<int(X*)> grm(&X::bar);
  69   VERIFY( grm );
  70   VERIFY( grm(&x) == 17 );
  71   VERIFY( typeid(int X::*) == grm.target_type() );
  72   VERIFY( *grm.target<int X::*>() == &X::bar );
  73
  74   function<int(X*)> gr(&X::foo);
  75   VERIFY( gr );
  76   VERIFY( gr(&x) == 1 );
  77   VERIFY( typeid(int (X::*)()) == gr.target_type() );
  78   VERIFY( *gr.target<int (X::*)()>() == &X::foo );
  79
  80   function<int(const X*)> grc(&X::foo_c);
  81   VERIFY( grc );
  82   VERIFY( grc(&x) == 2 );
  83   VERIFY( typeid(int (X::*)() const) == grc.target_type() );
  84   VERIFY( *grc.target<int (X::*)() const >() == &X::foo_c );
  85
  86   function<int(volatile X*)> grv(&X::foo_v);
  87   VERIFY( grv );
  88   VERIFY( grv(&x) == 3 );
  89   VERIFY( typeid(int (X::*)() volatile) == grv.target_type() );
  90   VERIFY( *grv.target<int (X::*)() volatile >() == &X::foo_v );
  91   VERIFY( grv.target<int (X::*)() const volatile>() == 0 );
  92
  93   function<int(const volatile X*)> grcv(&X::foo_cv);
  94   VERIFY( grcv );
  95   VERIFY( grcv(&x) == 4 );
  96   VERIFY( typeid(int (X::*)() const volatile) == grcv.target_type() );
  97   VERIFY( *grcv.target<int (X::*)() const volatile >() == &X::foo_cv );
  98   VERIFY( grcv.target<int (X::*)() const>() == 0 );
  99 }
 100
 101 int main()
 102 {
 103   test05();
 104   return 0;
 105 }