swap.pass.cpp revision 83e2c4d877fe2d7793868b1c6a5d9525a7c4d431 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <ios>
11
12// template <class charT, class traits> class basic_ios
13
14// void move(basic_ios&& rhs);
15
16#include <ios>
17#include <streambuf>
18#include <cassert>
19
20#include "platform_support.h" // locale name macros
21
22struct testbuf
23    : public std::streambuf
24{
25};
26
27struct testios
28    : public std::ios
29{
30    testios(std::streambuf* p) : std::ios(p) {}
31    void swap(std::ios& x) {std::ios::swap(x);}
32};
33
34bool f1_called = false;
35bool f2_called = false;
36
37bool g1_called = false;
38bool g2_called = false;
39bool g3_called = false;
40
41void f1(std::ios_base::event ev, std::ios_base& stream, int index)
42{
43    assert(index == 4);
44    f1_called = true;
45}
46
47void f2(std::ios_base::event ev, std::ios_base& stream, int index)
48{
49    assert(index == 5);
50    f2_called = true;
51}
52
53void g1(std::ios_base::event ev, std::ios_base& stream, int index)
54{
55    assert(index == 7);
56    g1_called = true;
57}
58
59void g2(std::ios_base::event ev, std::ios_base& stream, int index)
60{
61    assert(index == 8);
62    g2_called = true;
63}
64
65void g3(std::ios_base::event ev, std::ios_base& stream, int index)
66{
67    assert(index == 9);
68    g3_called = true;
69}
70
71int main()
72{
73    testbuf sb1;
74    testios ios1(&sb1);
75    ios1.flags(std::ios::boolalpha | std::ios::dec | std::ios::fixed);
76    ios1.precision(1);
77    ios1.width(11);
78    ios1.imbue(std::locale(LOCALE_en_US_UTF_8));
79    ios1.exceptions(std::ios::failbit);
80    ios1.setstate(std::ios::eofbit);
81    ios1.register_callback(f1, 4);
82    ios1.register_callback(f2, 5);
83    ios1.iword(0) = 1;
84    ios1.iword(1) = 2;
85    ios1.iword(2) = 3;
86    char c1, c2, c3;
87    ios1.pword(0) = &c1;
88    ios1.pword(1) = &c2;
89    ios1.pword(2) = &c3;
90    ios1.tie((std::ostream*)1);
91    ios1.fill('1');
92
93    testbuf sb2;
94    testios ios2(&sb2);
95    ios2.flags(std::ios::showpoint | std::ios::uppercase);
96    ios2.precision(2);
97    ios2.width(12);
98    ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
99    ios2.exceptions(std::ios::eofbit);
100    ios2.setstate(std::ios::goodbit);
101    ios2.register_callback(g1, 7);
102    ios2.register_callback(g2, 8);
103    ios2.register_callback(g3, 9);
104    ios2.iword(0) = 4;
105    ios2.iword(1) = 5;
106    ios2.iword(2) = 6;
107    ios2.iword(3) = 7;
108    ios2.iword(4) = 8;
109    ios2.iword(5) = 9;
110    char d1, d2;
111    ios2.pword(0) = &d1;
112    ios2.pword(1) = &d2;
113    ios2.tie((std::ostream*)2);
114    ios2.fill('2');
115
116    ios1.swap(ios2);
117
118    assert(ios1.rdstate() == std::ios::goodbit);
119    assert(ios1.rdbuf() == &sb1);
120    assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
121    assert(ios1.precision() == 2);
122    assert(ios1.width() == 12);
123    assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
124    assert(ios1.exceptions() == std::ios::eofbit);
125    assert(!f1_called);
126    assert(!f2_called);
127    assert(!g1_called);
128    assert(!g2_called);
129    assert(!g3_called);
130    assert(ios1.iword(0) == 4);
131    assert(ios1.iword(1) == 5);
132    assert(ios1.iword(2) == 6);
133    assert(ios1.iword(3) == 7);
134    assert(ios1.iword(4) == 8);
135    assert(ios1.iword(5) == 9);
136    assert(ios1.pword(0) == &d1);
137    assert(ios1.pword(1) == &d2);
138    assert(ios1.tie() == (std::ostream*)2);
139    assert(ios1.fill() == '2');
140    ios1.imbue(std::locale("C"));
141    assert(!f1_called);
142    assert(!f2_called);
143    assert(g1_called);
144    assert(g2_called);
145    assert(g3_called);
146
147    assert(ios2.rdstate() == std::ios::eofbit);
148    assert(ios2.rdbuf() == &sb2);
149    assert(ios2.flags() == (std::ios::boolalpha | std::ios::dec | std::ios::fixed));
150    assert(ios2.precision() == 1);
151    assert(ios2.width() == 11);
152    assert(ios2.getloc().name() == LOCALE_en_US_UTF_8);
153    assert(ios2.exceptions() == std::ios::failbit);
154    assert(ios2.iword(0) == 1);
155    assert(ios2.iword(1) == 2);
156    assert(ios2.iword(2) == 3);
157    assert(ios2.pword(0) == &c1);
158    assert(ios2.pword(1) == &c2);
159    assert(ios2.pword(2) == &c3);
160    assert(ios2.tie() == (std::ostream*)1);
161    assert(ios2.fill() == '1');
162    ios2.imbue(std::locale("C"));
163    assert(f1_called);
164    assert(f2_called);
165}
166