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