libstdc++-v3/testsuite/tr1/3_function_objects/function/5.cc

   1 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
   2 //
   3 // Copyright (C) 2005-2019 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 member pointers into function<> wrappers
  28 void test05()
  29 {
  30   using std::tr1::function;
  31
  32   X x;
  33   x.bar = 17;
  34
  35   function<int(X&)> frm(&X::bar);
  36   VERIFY( frm );
  37   VERIFY( frm(x) == 17 );
  38   VERIFY( typeid(int X::*) == frm.target_type() );
  39   VERIFY( *frm.target<int X::*>() == &X::bar );
  40
  41   function<int(X&)> fr(&X::foo);
  42   VERIFY( fr );
  43   VERIFY( fr(x) == 1 );
  44   VERIFY( typeid(int (X::*)()) == fr.target_type() );
  45   VERIFY( *fr.target<int (X::*)()>() == &X::foo );
  46
  47   function<int(const X&)> frc(&X::foo_c);
  48   VERIFY( frc );
  49   VERIFY( frc(x) == 2 );
  50   VERIFY( typeid(int (X::*)() const) == frc.target_type() );
  51   VERIFY( *frc.target<int (X::*)() const >() == &X::foo_c );
  52
  53   function<int(volatile X&)> frv(&X::foo_v);
  54   VERIFY( frv );
  55   VERIFY( frv(x) == 3 );
  56   VERIFY( typeid(int (X::*)() volatile) == frv.target_type() );
  57   VERIFY( *frv.target<int (X::*)() volatile >() == &X::foo_v );
  58   VERIFY( frv.target<int (X::*)() const volatile>() == 0 );
  59
  60   function<int(const volatile X&)> frcv(&X::foo_cv);
  61   VERIFY( frcv );
  62   VERIFY( frcv(x) == 4 );
  63   VERIFY( typeid(int (X::*)() const volatile) == frcv.target_type() );
  64   VERIFY( *frcv.target<int (X::*)() const volatile >() == &X::foo_cv );
  65   VERIFY( frcv.target<int (X::*)() const>() == 0 );
  66
  67   function<int(X*)> grm(&X::bar);
  68   VERIFY( grm );
  69   VERIFY( grm(&x) == 17 );
  70   VERIFY( typeid(int X::*) == grm.target_type() );
  71   VERIFY( *grm.target<int X::*>() == &X::bar );
  72
  73   function<int(X*)> gr(&X::foo);
  74   VERIFY( gr );
  75   VERIFY( gr(&x) == 1 );
  76   VERIFY( typeid(int (X::*)()) == gr.target_type() );
  77   VERIFY( *gr.target<int (X::*)()>() == &X::foo );
  78
  79   function<int(const X*)> grc(&X::foo_c);
  80   VERIFY( grc );
  81   VERIFY( grc(&x) == 2 );
  82   VERIFY( typeid(int (X::*)() const) == grc.target_type() );
  83   VERIFY( *grc.target<int (X::*)() const >() == &X::foo_c );
  84
  85   function<int(volatile X*)> grv(&X::foo_v);
  86   VERIFY( grv );
  87   VERIFY( grv(&x) == 3 );
  88   VERIFY( typeid(int (X::*)() volatile) == grv.target_type() );
  89   VERIFY( *grv.target<int (X::*)() volatile >() == &X::foo_v );
  90   VERIFY( grv.target<int (X::*)() const volatile>() == 0 );
  91
  92   function<int(const volatile X*)> grcv(&X::foo_cv);
  93   VERIFY( grcv );
  94   VERIFY( grcv(&x) == 4 );
  95   VERIFY( typeid(int (X::*)() const volatile) == grcv.target_type() );
  96   VERIFY( *grcv.target<int (X::*)() const volatile >() == &X::foo_cv );
  97   VERIFY( grcv.target<int (X::*)() const>() == 0 );
  98 }
  99
 100 int main()
 101 {
 102   test05();
 103   return 0;
 104 }