libstdc++-v3/testsuite/tr1/3_function_objects/function/8.cc

   1 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
   2 //
   3 // Copyright (C) 2005-2014 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 3.7.2 polymorphic function object wrapper
  21 #include <tr1/functional>
  22 #include <testsuite_hooks.h>
  23 #include <testsuite_tr1.h>
  24
  25 using namespace __gnu_test;
  26
  27 bool test __attribute__((unused)) = true;
  28
  29 // Put reference_wrappers to member pointers
  30 void test08()
  31 {
  32   using std::tr1::function;
  33   using std::tr1::ref;
  34   using std::tr1::cref;
  35
  36   int X::* X_bar = &X::bar;
  37   int (X::* X_foo)() = &X::foo;
  38   int (X::* X_foo_c)() const = &X::foo_c;
  39   int (X::* X_foo_v)() volatile = &X::foo_v;
  40   int (X::* X_foo_cv)() const volatile = &X::foo_cv;
  41
  42   X x;
  43   x.bar = 17;
  44
  45   function<int(X&)> frm(ref(X_bar));
  46   VERIFY( frm );
  47   VERIFY( frm(x) == 17 );
  48   VERIFY( typeid(int X::*) == frm.target_type() );
  49   VERIFY( frm.target<int X::*>() == &X_bar );
  50
  51   function<int(X&)> fr(ref(X_foo));
  52   VERIFY( fr );
  53   VERIFY( fr(x) == 1 );
  54   VERIFY( typeid(int (X::*)()) == fr.target_type() );
  55   VERIFY( fr.target<int (X::*)()>() == &X_foo );
  56
  57   function<int(const X&)> frc(ref(X_foo_c));
  58   VERIFY( frc );
  59   VERIFY( frc(x) == 2 );
  60   VERIFY( typeid(int (X::*)() const) == frc.target_type() );
  61   VERIFY( frc.target<int (X::*)() const >() == &X_foo_c );
  62
  63   function<int(volatile X&)> frv(ref(X_foo_v));
  64   VERIFY( frv );
  65   VERIFY( frv(x) == 3 );
  66   VERIFY( typeid(int (X::*)() volatile) == frv.target_type() );
  67   VERIFY( *frv.target<int (X::*)() volatile >() == X_foo_v );
  68   VERIFY( frv.target<int (X::*)() const volatile>() == 0 );
  69
  70   function<int(const volatile X&)> frcv(ref(X_foo_cv));
  71   VERIFY( frcv );
  72   VERIFY( frcv(x) == 4 );
  73   VERIFY( typeid(int (X::*)() const volatile) == frcv.target_type() );
  74   VERIFY( *frcv.target<int (X::*)() const volatile >() == X_foo_cv );
  75   VERIFY( frcv.target<int (X::*)() const>() == 0 );
  76
  77   function<int(X*)> grm(ref(X_bar));
  78   VERIFY( grm );
  79   VERIFY( grm(&x) == 17 );
  80   VERIFY( typeid(int X::*) == grm.target_type() );
  81   VERIFY( *grm.target<int X::*>() == X_bar );
  82
  83   function<int(X*)> gr(ref(X_foo));
  84   VERIFY( gr );
  85   VERIFY( gr(&x) == 1 );
  86   VERIFY( typeid(int (X::*)()) == gr.target_type() );
  87   VERIFY( *gr.target<int (X::*)()>() == X_foo );
  88
  89   function<int(const X*)> grc(ref(X_foo_c));
  90   VERIFY( grc );
  91   VERIFY( grc(&x) == 2 );
  92   VERIFY( typeid(int (X::*)() const) == grc.target_type() );
  93   VERIFY( *grc.target<int (X::*)() const >() == X_foo_c );
  94
  95   function<int(volatile X*)> grv(ref(X_foo_v));
  96   VERIFY( grv );
  97   VERIFY( grv(&x) == 3 );
  98   VERIFY( typeid(int (X::*)() volatile) == grv.target_type() );
  99   VERIFY( *grv.target<int (X::*)() volatile >() == X_foo_v );
 100   VERIFY( grv.target<int (X::*)() const volatile>() == 0 );
 101
 102   function<int(const volatile X*)> grcv(ref(X_foo_cv));
 103   VERIFY( grcv );
 104   VERIFY( grcv(&x) == 4 );
 105   VERIFY( typeid(int (X::*)() const volatile) == grcv.target_type() );
 106   VERIFY( *grcv.target<int (X::*)() const volatile >() == X_foo_cv );
 107   VERIFY( grcv.target<int (X::*)() const>() == 0 );
 108
 109   function<int(X&)> hrm(cref(X_bar));
 110   VERIFY( hrm );
 111   VERIFY( hrm(x) == 17 );
 112   VERIFY( typeid(int X::*) == hrm.target_type() );
 113   VERIFY( hrm.target<int X::*>() == 0 );
 114   VERIFY( hrm.target<int X::* const>() == &X_bar );
 115
 116   function<int(X&)> hr(cref(X_foo));
 117   VERIFY( hr );
 118   VERIFY( hr(x) == 1 );
 119   VERIFY( typeid(int (X::*)()) == hr.target_type() );
 120   VERIFY( hr.target<int (X::* const)()>() == &X_foo );
 121
 122   function<int(const X&)> hrc(cref(X_foo_c));
 123   VERIFY( hrc );
 124   VERIFY( hrc(x) == 2 );
 125   VERIFY( typeid(int (X::*)() const) == hrc.target_type() );
 126   VERIFY( hrc.target<int (X::* const)() const >() == &X_foo_c );
 127
 128   function<int(volatile X&)> hrv(cref(X_foo_v));
 129   VERIFY( hrv );
 130   VERIFY( hrv(x) == 3 );
 131   VERIFY( typeid(int (X::*)() volatile) == hrv.target_type() );
 132   VERIFY( hrv.target<int (X::* const)() volatile >() == &X_foo_v );
 133   VERIFY( hrv.target<int (X::* const)() const volatile>() == 0 );
 134
 135   function<int(const volatile X&)> hrcv(cref(X_foo_cv));
 136   VERIFY( hrcv );
 137   VERIFY( hrcv(x) == 4 );
 138   VERIFY( typeid(int (X::*)() const volatile) == hrcv.target_type() );
 139   VERIFY( hrcv.target<int (X::* const)() const volatile >() == &X_foo_cv );
 140   VERIFY( hrcv.target<int (X::* const)() const>() == 0 );
 141 }
 142
 143 int main()
 144 {
 145   test08();
 146   return 0;
 147 }