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 // <sstream>
10 
11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
12 // class basic_istringstream
13 
14 // explicit basic_istringstream(const basic_string<charT,traits,allocator>& str,
15 //                              ios_base::openmode which = ios_base::in);
16 
17 // XFAIL: FROZEN-CXX03-HEADERS-FIXME
18 
19 #include <sstream>
20 #include <cassert>
21 
22 #include "test_macros.h"
23 #include "operator_hijacker.h"
24 
25 int main(int, char**)
26 {
27     {
28         std::istringstream ss(" 123 456");
29         assert(ss.rdbuf() != nullptr);
30         assert(ss.good());
31         assert(ss.str() == " 123 456");
32         int i = 0;
33         ss >> i;
34         assert(i == 123);
35         ss >> i;
36         assert(i == 456);
37     }
38     {
39       std::basic_istringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss(" 123 456");
40       assert(ss.rdbuf() != nullptr);
41       assert(ss.good());
42       assert(ss.str() == " 123 456");
43       int i = 0;
44       ss >> i;
45       assert(i == 123);
46       ss >> i;
47       assert(i == 456);
48     }
49     {
50         std::istringstream ss(" 123 456", std::ios_base::out);
51         assert(ss.rdbuf() != nullptr);
52         assert(ss.good());
53         assert(ss.str() == " 123 456");
54         int i = 0;
55         ss >> i;
56         assert(i == 123);
57         ss >> i;
58         assert(i == 456);
59     }
60     {
61       std::basic_istringstream<char, std::char_traits<char>, operator_hijacker_allocator<char> > ss(
62           " 123 456", std::ios_base::out);
63       assert(ss.rdbuf() != nullptr);
64       assert(ss.good());
65       assert(ss.str() == " 123 456");
66       int i = 0;
67       ss >> i;
68       assert(i == 123);
69       ss >> i;
70       assert(i == 456);
71     }
72 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
73     {
74         std::wistringstream ss(L" 123 456");
75         assert(ss.rdbuf() != nullptr);
76         assert(ss.good());
77         assert(ss.str() == L" 123 456");
78         int i = 0;
79         ss >> i;
80         assert(i == 123);
81         ss >> i;
82         assert(i == 456);
83     }
84     {
85       std::basic_istringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss(
86           L" 123 456");
87       assert(ss.rdbuf() != nullptr);
88       assert(ss.good());
89       assert(ss.str() == L" 123 456");
90       int i = 0;
91       ss >> i;
92       assert(i == 123);
93       ss >> i;
94       assert(i == 456);
95     }
96     {
97         std::wistringstream ss(L" 123 456", std::ios_base::out);
98         assert(ss.rdbuf() != nullptr);
99         assert(ss.good());
100         assert(ss.str() == L" 123 456");
101         int i = 0;
102         ss >> i;
103         assert(i == 123);
104         ss >> i;
105         assert(i == 456);
106     }
107     {
108       std::basic_istringstream<wchar_t, std::char_traits<wchar_t>, operator_hijacker_allocator<wchar_t> > ss(
109           L" 123 456", std::ios_base::out);
110       assert(ss.rdbuf() != nullptr);
111       assert(ss.good());
112       assert(ss.str() == L" 123 456");
113       int i = 0;
114       ss >> i;
115       assert(i == 123);
116       ss >> i;
117       assert(i == 456);
118     }
119 #endif
120 
121   return 0;
122 }
123