libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/swap.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // REQUIRES: locale.en_US.UTF-8
  10 // REQUIRES: locale.fr_FR.UTF-8
  11
  12 // <ios>
  13
  14 // template <class charT, class traits> class basic_ios
  15
  16 // void move(basic_ios&& rhs);
  17
  18 #include <ios>
  19 #include <streambuf>
  20 #include <cassert>
  21
  22 #include "test_macros.h"
  23 #include "platform_support.h" // locale name macros
  24
  25 struct testbuf
  26     : public std::streambuf
  27 {
  28 };
  29
  30 struct testios
  31     : public std::ios
  32 {
  33     testios(std::streambuf* p) : std::ios(p) {}
  34     void swap(std::ios& x) {std::ios::swap(x);}
  35 };
  36
  37 bool f1_called = false;
  38 bool f2_called = false;
  39
  40 bool g1_called = false;
  41 bool g2_called = false;
  42 bool g3_called = false;
  43
  44 void f1(std::ios_base::event, std::ios_base&, int index)
  45 {
  46     assert(index == 4);
  47     f1_called = true;
  48 }
  49
  50 void f2(std::ios_base::event, std::ios_base&, int index)
  51 {
  52     assert(index == 5);
  53     f2_called = true;
  54 }
  55
  56 void g1(std::ios_base::event, std::ios_base&, int index)
  57 {
  58     assert(index == 7);
  59     g1_called = true;
  60 }
  61
  62 void g2(std::ios_base::event, std::ios_base&, int index)
  63 {
  64     assert(index == 8);
  65     g2_called = true;
  66 }
  67
  68 void g3(std::ios_base::event, std::ios_base&, int index)
  69 {
  70     assert(index == 9);
  71     g3_called = true;
  72 }
  73
  74 int main(int, char**)
  75 {
  76     testbuf sb1;
  77     testios ios1(&sb1);
  78     ios1.flags(std::ios::boolalpha | std::ios::dec | std::ios::fixed);
  79     ios1.precision(1);
  80     ios1.width(11);
  81     ios1.imbue(std::locale(LOCALE_en_US_UTF_8));
  82     ios1.exceptions(std::ios::failbit);
  83     ios1.setstate(std::ios::eofbit);
  84     ios1.register_callback(f1, 4);
  85     ios1.register_callback(f2, 5);
  86     ios1.iword(0) = 1;
  87     ios1.iword(1) = 2;
  88     ios1.iword(2) = 3;
  89     char c1, c2, c3;
  90     ios1.pword(0) = &c1;
  91     ios1.pword(1) = &c2;
  92     ios1.pword(2) = &c3;
  93     ios1.tie((std::ostream*)1);
  94     ios1.fill('1');
  95
  96     testbuf sb2;
  97     testios ios2(&sb2);
  98     ios2.flags(std::ios::showpoint | std::ios::uppercase);
  99     ios2.precision(2);
 100     ios2.width(12);
 101     ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
 102     ios2.exceptions(std::ios::eofbit);
 103     ios2.setstate(std::ios::goodbit);
 104     ios2.register_callback(g1, 7);
 105     ios2.register_callback(g2, 8);
 106     ios2.register_callback(g3, 9);
 107     ios2.iword(0) = 4;
 108     ios2.iword(1) = 5;
 109     ios2.iword(2) = 6;
 110     ios2.iword(3) = 7;
 111     ios2.iword(4) = 8;
 112     ios2.iword(5) = 9;
 113     char d1, d2;
 114     ios2.pword(0) = &d1;
 115     ios2.pword(1) = &d2;
 116     ios2.tie((std::ostream*)2);
 117     ios2.fill('2');
 118
 119     ios1.swap(ios2);
 120
 121     assert(ios1.rdstate() == std::ios::goodbit);
 122     assert(ios1.rdbuf() == &sb1);
 123     assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
 124     assert(ios1.precision() == 2);
 125     assert(ios1.width() == 12);
 126     assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
 127     assert(ios1.exceptions() == std::ios::eofbit);
 128     assert(!f1_called);
 129     assert(!f2_called);
 130     assert(!g1_called);
 131     assert(!g2_called);
 132     assert(!g3_called);
 133     assert(ios1.iword(0) == 4);
 134     assert(ios1.iword(1) == 5);
 135     assert(ios1.iword(2) == 6);
 136     assert(ios1.iword(3) == 7);
 137     assert(ios1.iword(4) == 8);
 138     assert(ios1.iword(5) == 9);
 139     assert(ios1.pword(0) == &d1);
 140     assert(ios1.pword(1) == &d2);
 141     assert(ios1.tie() == (std::ostream*)2);
 142     assert(ios1.fill() == '2');
 143     ios1.imbue(std::locale("C"));
 144     assert(!f1_called);
 145     assert(!f2_called);
 146     assert(g1_called);
 147     assert(g2_called);
 148     assert(g3_called);
 149
 150     assert(ios2.rdstate() == std::ios::eofbit);
 151     assert(ios2.rdbuf() == &sb2);
 152     assert(ios2.flags() == (std::ios::boolalpha | std::ios::dec | std::ios::fixed));
 153     assert(ios2.precision() == 1);
 154     assert(ios2.width() == 11);
 155     assert(ios2.getloc().name() == LOCALE_en_US_UTF_8);
 156     assert(ios2.exceptions() == std::ios::failbit);
 157     assert(ios2.iword(0) == 1);
 158     assert(ios2.iword(1) == 2);
 159     assert(ios2.iword(2) == 3);
 160     assert(ios2.pword(0) == &c1);
 161     assert(ios2.pword(1) == &c2);
 162     assert(ios2.pword(2) == &c3);
 163     assert(ios2.tie() == (std::ostream*)1);
 164     assert(ios2.fill() == '1');
 165     ios2.imbue(std::locale("C"));
 166     assert(f1_called);
 167     assert(f2_called);
 168
 169   return 0;
 170 }