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 #include <sstream>
18 #include <cassert>
19 
20 int main(int, char**)
21 {
22     {
23         std::istringstream ss(" 123 456");
24         assert(ss.rdbuf() != 0);
25         assert(ss.good());
26         assert(ss.str() == " 123 456");
27         int i = 0;
28         ss >> i;
29         assert(i == 123);
30         ss >> i;
31         assert(i == 456);
32     }
33     {
34         std::istringstream ss(" 123 456", std::ios_base::out);
35         assert(ss.rdbuf() != 0);
36         assert(ss.good());
37         assert(ss.str() == " 123 456");
38         int i = 0;
39         ss >> i;
40         assert(i == 123);
41         ss >> i;
42         assert(i == 456);
43     }
44     {
45         std::wistringstream ss(L" 123 456");
46         assert(ss.rdbuf() != 0);
47         assert(ss.good());
48         assert(ss.str() == L" 123 456");
49         int i = 0;
50         ss >> i;
51         assert(i == 123);
52         ss >> i;
53         assert(i == 456);
54     }
55     {
56         std::wistringstream ss(L" 123 456", std::ios_base::out);
57         assert(ss.rdbuf() != 0);
58         assert(ss.good());
59         assert(ss.str() == L" 123 456");
60         int i = 0;
61         ss >> i;
62         assert(i == 123);
63         ss >> i;
64         assert(i == 456);
65     }
66 
67   return 0;
68 }
69