libstdc++-v3/testsuite/23_containers/multimap/modifiers/emplace/1.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2012-2017 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 #include <tuple>
  21 #include <vector>
  22 #include <map>
  23 #include <testsuite_hooks.h>
  24
  25 class PathPoint
  26 {
  27 public:
  28   PathPoint(char t, const std::vector<double>& c)
  29   : type(t), coords(c) { }
  30   PathPoint(char t, std::vector<double>&& c)
  31   : type(t), coords(std::move(c)) { }
  32   char getType() const { return type; }
  33   const std::vector<double>& getCoords() const { return coords; }
  34 private:
  35   char type;
  36   std::vector<double> coords;
  37 };
  38
  39 void test01()
  40 {
  41   typedef std::multimap<char, std::vector<double>> MMap;
  42   MMap mm;
  43
  44   std::vector<double> coord1 = { 0.0, 1.0, 2.0 };
  45
  46   auto it = mm.emplace('a', coord1);
  47   VERIFY( mm.size() == 1 );
  48   VERIFY( it->first == 'a' );
  49
  50   coord1[0] = 3.0;
  51   it = mm.emplace('a', coord1);
  52   VERIFY( mm.size() == 2 );
  53   VERIFY( it->first == 'a' );
  54   VERIFY( it->second[0] == 3.0 );
  55
  56   it = mm.emplace_hint(mm.begin(), 'b', coord1);
  57   VERIFY( it != mm.end() );
  58   VERIFY( it->first == 'b' );
  59   VERIFY( it->second[0] == 3.0 );
  60
  61   double *px = &coord1[0];
  62   it = mm.emplace('c', std::move(coord1));
  63   VERIFY( it->first == 'c' );
  64   VERIFY( &(it->second[0]) == px );
  65 }
  66
  67 void test02()
  68 {
  69   using namespace std;
  70   typedef multimap<char, PathPoint> Map;
  71   Map m;
  72
  73   vector<double> coord1 = { 0.0, 1.0, 2.0 };
  74
  75   auto it = m.emplace(piecewise_construct,
  76                       make_tuple('a'), make_tuple('a', coord1));
  77   VERIFY( m.size() == 1 );
  78   VERIFY( it->first == 'a' );
  79
  80   coord1[0] = 3.0;
  81   it = m.emplace(piecewise_construct,
  82                   make_tuple('a'), make_tuple( 'b', coord1));
  83   VERIFY( m.size() == 2 );
  84   VERIFY( it->first == 'a' );
  85   VERIFY( it->second.getCoords()[0] == 3.0 );
  86
  87   it = m.emplace_hint(m.begin(), piecewise_construct,
  88                       make_tuple('b'), make_tuple('c', coord1));
  89   VERIFY( it != m.end() );
  90   VERIFY( it->first == 'b' );
  91   VERIFY( it->second.getCoords()[0] == 3.0 );
  92
  93   double *px = &coord1[0];
  94   it = m.emplace(piecewise_construct,
  95                   make_tuple('c'), make_tuple('d', move(coord1)));
  96   VERIFY( it->first == 'c' );
  97   VERIFY( &(it->second.getCoords()[0]) == px );
  98 }
  99
 100
 101 int main()
 102 {
 103   test01();
 104   test02();
 105   return 0;
 106 }