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

   1 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
   2 //
   3 // Copyright (C) 2005-2024 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 // Put reference_wrappers to member pointers
  28 void test08()
  29 {
  30   using std::tr1::function;
  31   using std::tr1::ref;
  32   using std::tr1::cref;
  33
  34   int X::* X_bar = &X::bar;
  35   int (X::* X_foo)() = &X::foo;
  36   int (X::* X_foo_c)() const = &X::foo_c;
  37   int (X::* X_foo_v)() volatile = &X::foo_v;
  38   int (X::* X_foo_cv)() const volatile = &X::foo_cv;
  39
  40   X x;
  41   x.bar = 17;
  42
  43   function<int(X&)> frm(ref(X_bar));
  44   VERIFY( frm );
  45   VERIFY( frm(x) == 17 );
  46 #if __cpp_rtti
  47   VERIFY( typeid(int X::*) == frm.target_type() );
  48   VERIFY( frm.target<int X::*>() == &X_bar );
  49 #endif
  50
  51   function<int(X&)> fr(ref(X_foo));
  52   VERIFY( fr );
  53   VERIFY( fr(x) == 1 );
  54 #if __cpp_rtti
  55   VERIFY( typeid(int (X::*)()) == fr.target_type() );
  56   VERIFY( fr.target<int (X::*)()>() == &X_foo );
  57 #endif
  58
  59   function<int(const X&)> frc(ref(X_foo_c));
  60   VERIFY( frc );
  61   VERIFY( frc(x) == 2 );
  62 #if __cpp_rtti
  63   VERIFY( typeid(int (X::*)() const) == frc.target_type() );
  64   VERIFY( frc.target<int (X::*)() const >() == &X_foo_c );
  65 #endif
  66
  67   function<int(volatile X&)> frv(ref(X_foo_v));
  68   VERIFY( frv );
  69   VERIFY( frv(x) == 3 );
  70 #if __cpp_rtti
  71   VERIFY( typeid(int (X::*)() volatile) == frv.target_type() );
  72   VERIFY( *frv.target<int (X::*)() volatile >() == X_foo_v );
  73   VERIFY( frv.target<int (X::*)() const volatile>() == 0 );
  74 #endif
  75
  76   function<int(const volatile X&)> frcv(ref(X_foo_cv));
  77   VERIFY( frcv );
  78   VERIFY( frcv(x) == 4 );
  79 #if __cpp_rtti
  80   VERIFY( typeid(int (X::*)() const volatile) == frcv.target_type() );
  81   VERIFY( *frcv.target<int (X::*)() const volatile >() == X_foo_cv );
  82   VERIFY( frcv.target<int (X::*)() const>() == 0 );
  83 #endif
  84
  85   function<int(X*)> grm(ref(X_bar));
  86   VERIFY( grm );
  87   VERIFY( grm(&x) == 17 );
  88 #if __cpp_rtti
  89   VERIFY( typeid(int X::*) == grm.target_type() );
  90   VERIFY( *grm.target<int X::*>() == X_bar );
  91 #endif
  92
  93   function<int(X*)> gr(ref(X_foo));
  94   VERIFY( gr );
  95   VERIFY( gr(&x) == 1 );
  96 #if __cpp_rtti
  97   VERIFY( typeid(int (X::*)()) == gr.target_type() );
  98   VERIFY( *gr.target<int (X::*)()>() == X_foo );
  99 #endif
 100
 101   function<int(const X*)> grc(ref(X_foo_c));
 102   VERIFY( grc );
 103   VERIFY( grc(&x) == 2 );
 104 #if __cpp_rtti
 105   VERIFY( typeid(int (X::*)() const) == grc.target_type() );
 106   VERIFY( *grc.target<int (X::*)() const >() == X_foo_c );
 107 #endif
 108
 109   function<int(volatile X*)> grv(ref(X_foo_v));
 110   VERIFY( grv );
 111   VERIFY( grv(&x) == 3 );
 112 #if __cpp_rtti
 113   VERIFY( typeid(int (X::*)() volatile) == grv.target_type() );
 114   VERIFY( *grv.target<int (X::*)() volatile >() == X_foo_v );
 115   VERIFY( grv.target<int (X::*)() const volatile>() == 0 );
 116 #endif
 117
 118   function<int(const volatile X*)> grcv(ref(X_foo_cv));
 119   VERIFY( grcv );
 120   VERIFY( grcv(&x) == 4 );
 121 #if __cpp_rtti
 122   VERIFY( typeid(int (X::*)() const volatile) == grcv.target_type() );
 123   VERIFY( *grcv.target<int (X::*)() const volatile >() == X_foo_cv );
 124   VERIFY( grcv.target<int (X::*)() const>() == 0 );
 125 #endif
 126
 127   function<int(X&)> hrm(cref(X_bar));
 128   VERIFY( hrm );
 129   VERIFY( hrm(x) == 17 );
 130 #if __cpp_rtti
 131   VERIFY( typeid(int X::*) == hrm.target_type() );
 132   VERIFY( hrm.target<int X::*>() == 0 );
 133   VERIFY( hrm.target<int X::* const>() == &X_bar );
 134 #endif
 135
 136   function<int(X&)> hr(cref(X_foo));
 137   VERIFY( hr );
 138   VERIFY( hr(x) == 1 );
 139 #if __cpp_rtti
 140   VERIFY( typeid(int (X::*)()) == hr.target_type() );
 141   VERIFY( hr.target<int (X::* const)()>() == &X_foo );
 142 #endif
 143
 144   function<int(const X&)> hrc(cref(X_foo_c));
 145   VERIFY( hrc );
 146   VERIFY( hrc(x) == 2 );
 147 #if __cpp_rtti
 148   VERIFY( typeid(int (X::*)() const) == hrc.target_type() );
 149   VERIFY( hrc.target<int (X::* const)() const >() == &X_foo_c );
 150 #endif
 151
 152   function<int(volatile X&)> hrv(cref(X_foo_v));
 153   VERIFY( hrv );
 154   VERIFY( hrv(x) == 3 );
 155 #if __cpp_rtti
 156   VERIFY( typeid(int (X::*)() volatile) == hrv.target_type() );
 157   VERIFY( hrv.target<int (X::* const)() volatile >() == &X_foo_v );
 158   VERIFY( hrv.target<int (X::* const)() const volatile>() == 0 );
 159 #endif
 160
 161   function<int(const volatile X&)> hrcv(cref(X_foo_cv));
 162   VERIFY( hrcv );
 163   VERIFY( hrcv(x) == 4 );
 164 #if __cpp_rtti
 165   VERIFY( typeid(int (X::*)() const volatile) == hrcv.target_type() );
 166   VERIFY( hrcv.target<int (X::* const)() const volatile >() == &X_foo_cv );
 167   VERIFY( hrcv.target<int (X::* const)() const>() == 0 );
 168 #endif
 169 }
 170
 171 int main()
 172 {
 173   test08();
 174   return 0;
 175 }