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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 // basic_ios& copyfmt(const basic_ios& rhs);
15 
16 #include <ios>
17 #include <streambuf>
18 #include <cassert>
19 
20 #include "platform_support.h" // locale name macros
21 
22 struct testbuf
23     : public std::streambuf
24 {
25 };
26 
27 bool f1_called = false;
28 bool f2_called = false;
29 
30 bool g1_called = false;
31 bool g2_called = false;
32 bool g3_called = false;
33 
f1(std::ios_base::event ev,std::ios_base & stream,int index)34 void f1(std::ios_base::event ev, std::ios_base& stream, int index)
35 {
36     if (ev == std::ios_base::erase_event)
37     {
38         assert(!f1_called);
39         assert( f2_called);
40         assert(!g1_called);
41         assert(!g2_called);
42         assert(!g3_called);
43         assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
44         assert(index == 4);
45         f1_called = true;
46     }
47 }
48 
f2(std::ios_base::event ev,std::ios_base & stream,int index)49 void f2(std::ios_base::event ev, std::ios_base& stream, int index)
50 {
51     if (ev == std::ios_base::erase_event)
52     {
53         assert(!f1_called);
54         assert(!f2_called);
55         assert(!g1_called);
56         assert(!g2_called);
57         assert(!g3_called);
58         assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
59         assert(index == 5);
60         f2_called = true;
61     }
62 }
63 
g1(std::ios_base::event ev,std::ios_base & stream,int index)64 void g1(std::ios_base::event ev, std::ios_base& stream, int index)
65 {
66     if (ev == std::ios_base::copyfmt_event)
67     {
68         assert( f1_called);
69         assert( f2_called);
70         assert(!g1_called);
71         assert( g2_called);
72         assert( g3_called);
73         assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
74         assert(index == 7);
75         g1_called = true;
76     }
77 }
78 
g2(std::ios_base::event ev,std::ios_base & stream,int index)79 void g2(std::ios_base::event ev, std::ios_base& stream, int index)
80 {
81     if (ev == std::ios_base::copyfmt_event)
82     {
83         assert( f1_called);
84         assert( f2_called);
85         assert(!g1_called);
86         assert(!g2_called);
87         assert( g3_called);
88         assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
89         assert(index == 8);
90         g2_called = true;
91     }
92 }
93 
g3(std::ios_base::event ev,std::ios_base & stream,int index)94 void g3(std::ios_base::event ev, std::ios_base& stream, int index)
95 {
96     if (ev == std::ios_base::copyfmt_event)
97     {
98         assert( f1_called);
99         assert( f2_called);
100         assert(!g1_called);
101         assert(!g2_called);
102         assert(!g3_called);
103         assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
104         assert(index == 9);
105         g3_called = true;
106     }
107 }
108 
main()109 int main()
110 {
111     testbuf sb1;
112     std::ios ios1(&sb1);
113     ios1.flags(std::ios::boolalpha | std::ios::dec | std::ios::fixed);
114     ios1.precision(1);
115     ios1.width(11);
116     ios1.imbue(std::locale(LOCALE_en_US_UTF_8));
117     ios1.exceptions(std::ios::failbit);
118     ios1.setstate(std::ios::eofbit);
119     ios1.register_callback(f1, 4);
120     ios1.register_callback(f2, 5);
121     ios1.iword(0) = 1;
122     ios1.iword(1) = 2;
123     ios1.iword(2) = 3;
124     char c1, c2, c3;
125     ios1.pword(0) = &c1;
126     ios1.pword(1) = &c2;
127     ios1.pword(2) = &c3;
128     ios1.tie((std::ostream*)1);
129     ios1.fill('1');
130 
131     testbuf sb2;
132     std::ios ios2(&sb2);
133     ios2.flags(std::ios::showpoint | std::ios::uppercase);
134     ios2.precision(2);
135     ios2.width(12);
136     ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
137     ios2.exceptions(std::ios::eofbit);
138     ios2.setstate(std::ios::goodbit);
139     ios2.register_callback(g1, 7);
140     ios2.register_callback(g2, 8);
141     ios2.register_callback(g3, 9);
142     ios2.iword(0) = 4;
143     ios2.iword(1) = 5;
144     ios2.iword(2) = 6;
145     ios2.iword(3) = 7;
146     ios2.iword(4) = 8;
147     ios2.iword(5) = 9;
148     char d1, d2;
149     ios2.pword(0) = &d1;
150     ios2.pword(1) = &d2;
151     ios2.tie((std::ostream*)2);
152     ios2.fill('2');
153 
154     ios1.copyfmt(ios1);
155     assert(!f1_called);
156 
157     try
158     {
159         ios1.copyfmt(ios2);
160         assert(false);
161     }
162     catch (std::ios_base::failure&)
163     {
164     }
165     assert(ios1.rdstate() == std::ios::eofbit);
166     assert(ios1.rdbuf() == &sb1);
167     assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
168     assert(ios1.precision() == 2);
169     assert(ios1.width() == 12);
170     assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
171     assert(ios1.exceptions() == std::ios::eofbit);
172     assert(f1_called);
173     assert(f2_called);
174     assert(g1_called);
175     assert(g2_called);
176     assert(g3_called);
177     assert(ios1.iword(0) == 4);
178     assert(ios1.iword(1) == 5);
179     assert(ios1.iword(2) == 6);
180     assert(ios1.iword(3) == 7);
181     assert(ios1.iword(4) == 8);
182     assert(ios1.iword(5) == 9);
183     assert(ios1.pword(0) == &d1);
184     assert(ios1.pword(1) == &d2);
185     assert(ios1.tie() == (std::ostream*)2);
186     assert(ios1.fill() == '2');
187 }
188