libstdc++-v3/testsuite/20_util/function/8.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
   3 //
   4 // Copyright (C) 2005-2013 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 bool test __attribute__((unused)) = true;
  29
  30 // Put reference_wrappers to member pointers
  31 void test08()
  32 {
  33   using std::function;
  34   using std::ref;
  35   using std::cref;
  36
  37   int X::* X_bar = &X::bar;
  38   int (X::* X_foo)() = &X::foo;
  39   int (X::* X_foo_c)() const = &X::foo_c;
  40   int (X::* X_foo_v)() volatile = &X::foo_v;
  41   int (X::* X_foo_cv)() const volatile = &X::foo_cv;
  42
  43   X x;
  44   x.bar = 17;
  45
  46   function<int(X&)> frm(ref(X_bar));
  47   VERIFY( frm );
  48   VERIFY( frm(x) == 17 );
  49   VERIFY( typeid(int X::*) == frm.target_type() );
  50   VERIFY( frm.target<int X::*>() == &X_bar );
  51
  52   function<int(X&)> fr(ref(X_foo));
  53   VERIFY( fr );
  54   VERIFY( fr(x) == 1 );
  55   VERIFY( typeid(int (X::*)()) == fr.target_type() );
  56   VERIFY( fr.target<int (X::*)()>() == &X_foo );
  57
  58   function<int(const X&)> frc(ref(X_foo_c));
  59   VERIFY( frc );
  60   VERIFY( frc(x) == 2 );
  61   VERIFY( typeid(int (X::*)() const) == frc.target_type() );
  62   VERIFY( frc.target<int (X::*)() const >() == &X_foo_c );
  63
  64   function<int(volatile X&)> frv(ref(X_foo_v));
  65   VERIFY( frv );
  66   VERIFY( frv(x) == 3 );
  67   VERIFY( typeid(int (X::*)() volatile) == frv.target_type() );
  68   VERIFY( *frv.target<int (X::*)() volatile >() == X_foo_v );
  69   VERIFY( frv.target<int (X::*)() const volatile>() == 0 );
  70
  71   function<int(const volatile X&)> frcv(ref(X_foo_cv));
  72   VERIFY( frcv );
  73   VERIFY( frcv(x) == 4 );
  74   VERIFY( typeid(int (X::*)() const volatile) == frcv.target_type() );
  75   VERIFY( *frcv.target<int (X::*)() const volatile >() == X_foo_cv );
  76   VERIFY( frcv.target<int (X::*)() const>() == 0 );
  77
  78   function<int(X*)> grm(ref(X_bar));
  79   VERIFY( grm );
  80   VERIFY( grm(&x) == 17 );
  81   VERIFY( typeid(int X::*) == grm.target_type() );
  82   VERIFY( *grm.target<int X::*>() == X_bar );
  83
  84   function<int(X*)> gr(ref(X_foo));
  85   VERIFY( gr );
  86   VERIFY( gr(&x) == 1 );
  87   VERIFY( typeid(int (X::*)()) == gr.target_type() );
  88   VERIFY( *gr.target<int (X::*)()>() == X_foo );
  89
  90   function<int(const X*)> grc(ref(X_foo_c));
  91   VERIFY( grc );
  92   VERIFY( grc(&x) == 2 );
  93   VERIFY( typeid(int (X::*)() const) == grc.target_type() );
  94   VERIFY( *grc.target<int (X::*)() const >() == X_foo_c );
  95
  96   function<int(volatile X*)> grv(ref(X_foo_v));
  97   VERIFY( grv );
  98   VERIFY( grv(&x) == 3 );
  99   VERIFY( typeid(int (X::*)() volatile) == grv.target_type() );
 100   VERIFY( *grv.target<int (X::*)() volatile >() == X_foo_v );
 101   VERIFY( grv.target<int (X::*)() const volatile>() == 0 );
 102
 103   function<int(const volatile X*)> grcv(ref(X_foo_cv));
 104   VERIFY( grcv );
 105   VERIFY( grcv(&x) == 4 );
 106   VERIFY( typeid(int (X::*)() const volatile) == grcv.target_type() );
 107   VERIFY( *grcv.target<int (X::*)() const volatile >() == X_foo_cv );
 108   VERIFY( grcv.target<int (X::*)() const>() == 0 );
 109
 110   function<int(X&)> hrm(cref(X_bar));
 111   VERIFY( hrm );
 112   VERIFY( hrm(x) == 17 );
 113   VERIFY( typeid(int X::*) == hrm.target_type() );
 114   VERIFY( hrm.target<int X::*>() == 0 );
 115   VERIFY( hrm.target<int X::* const>() == &X_bar );
 116
 117   function<int(X&)> hr(cref(X_foo));
 118   VERIFY( hr );
 119   VERIFY( hr(x) == 1 );
 120   VERIFY( typeid(int (X::*)()) == hr.target_type() );
 121   VERIFY( hr.target<int (X::* const)()>() == &X_foo );
 122
 123   function<int(const X&)> hrc(cref(X_foo_c));
 124   VERIFY( hrc );
 125   VERIFY( hrc(x) == 2 );
 126   VERIFY( typeid(int (X::*)() const) == hrc.target_type() );
 127   VERIFY( hrc.target<int (X::* const)() const >() == &X_foo_c );
 128
 129   function<int(volatile X&)> hrv(cref(X_foo_v));
 130   VERIFY( hrv );
 131   VERIFY( hrv(x) == 3 );
 132   VERIFY( typeid(int (X::*)() volatile) == hrv.target_type() );
 133   VERIFY( hrv.target<int (X::* const)() volatile >() == &X_foo_v );
 134   VERIFY( hrv.target<int (X::* const)() const volatile>() == 0 );
 135
 136   function<int(const volatile X&)> hrcv(cref(X_foo_cv));
 137   VERIFY( hrcv );
 138   VERIFY( hrcv(x) == 4 );
 139   VERIFY( typeid(int (X::*)() const volatile) == hrcv.target_type() );
 140   VERIFY( hrcv.target<int (X::* const)() const volatile >() == &X_foo_cv );
 141   VERIFY( hrcv.target<int (X::* const)() const>() == 0 );
 142 }
 143
 144 int main()
 145 {
 146   test08();
 147   return 0;
 148 }