1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <sstream>
// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
// class basic_stringbuf
// void str(const basic_string<charT,traits,Allocator>& s);
#include <sstream>
#include <string>
#include <cassert>
#include "test_macros.h"
struct StringBuf : std::stringbuf {
explicit StringBuf(const char* s, std::ios_base::openmode mode) : basic_stringbuf(s, mode) {}
void public_setg(int a, int b, int c) {
char* p = eback();
this->setg(p + a, p + b, p + c);
}
};
static void test_altered_sequence_pointers() {
{
StringBuf src("hello world", std::ios_base::in);
src.public_setg(4, 6, 9);
std::stringbuf dest;
dest = std::move(src);
std::string str = dest.str();
assert(5 <= str.size() && str.size() <= 11);
LIBCPP_ASSERT(str == "o wor");
LIBCPP_ASSERT(dest.str() == "o wor");
}
{
StringBuf src("hello world", std::ios_base::in);
src.public_setg(4, 6, 9);
std::stringbuf dest;
dest.swap(src);
std::string str = dest.str();
assert(5 <= str.size() && str.size() <= 11);
LIBCPP_ASSERT(str == "o wor");
LIBCPP_ASSERT(dest.str() == "o wor");
}
}
int main(int, char**)
{
test_altered_sequence_pointers();
{
std::stringbuf buf("testing");
assert(buf.str() == "testing");
buf.str("another test");
assert(buf.str() == "another test");
}
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
{
std::wstringbuf buf(L"testing");
assert(buf.str() == L"testing");
buf.str(L"another test");
assert(buf.str() == L"another test");
}
#endif
return 0;
}
|
