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// <regex>
10
11// class match_results<BidirectionalIterator, Allocator>
12
13// string_type
14// format(const char_type* fmt,
15// regex_constants::match_flag_type flags = regex_constants::format_default) const;
16
17#include <regex>
18#include <cassert>
19#include "test_macros.h"
20
21int main(int, char**)
22{
23 {
24 std::match_results<const char*> m;
25 const char s[] = "abcdefghijk";
26 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
27
28 const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
29 std::string out = m.format(fmt);
30 assert(out == "prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
31 }
32 {
33 std::match_results<const char*> m;
34 const char s[] = "abcdefghijk";
35 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
36
37 const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
38 std::string out = m.format(fmt, std::regex_constants::format_sed);
39 assert(out == "prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
40 }
41 {
42 std::match_results<const char*> m;
43 const char s[] = "abcdefghijk";
44 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
45
46 const char fmt[] = "match: &, m[1]: \\1, m[2]: \\2";
47 std::string out = m.format(fmt, std::regex_constants::format_sed);
48 assert(out == "match: cdefghi, m[1]: efg, m[2]: e");
49 }
50
51#ifndef TEST_HAS_NO_WIDE_CHARACTERS
52 {
53 std::match_results<const wchar_t*> m;
54 const wchar_t s[] = L"abcdefghijk";
55 assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
56
57 const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
58 std::wstring out = m.format(fmt);
59 assert(out == L"prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
60 }
61 {
62 std::match_results<const wchar_t*> m;
63 const wchar_t s[] = L"abcdefghijk";
64 assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
65
66 const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
67 std::wstring out = m.format(fmt, std::regex_constants::format_sed);
68 assert(out == L"prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
69 }
70 {
71 std::match_results<const wchar_t*> m;
72 const wchar_t s[] = L"abcdefghijk";
73 assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
74
75 const wchar_t fmt[] = L"match: &, m[1]: \\1, m[2]: \\2";
76 std::wstring out = m.format(fmt, std::regex_constants::format_sed);
77 assert(out == L"match: cdefghi, m[1]: efg, m[2]: e");
78 }
79#endif // TEST_HAS_NO_WIDE_CHARACTERS
80
81 return 0;
82}
83

source code of libcxx/test/std/re/re.results/re.results.form/form4.pass.cpp