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 // <string>
10
11 // size_type find_last_of(const basic_string& str, size_type pos = npos) const; // constexpr since C++20
12
13 #include <string>
14 #include <cassert>
15
16 #include "test_macros.h"
17 #include "min_allocator.h"
18
19 template <class S>
20 TEST_CONSTEXPR_CXX20 void
test(const S & s,const S & str,typename S::size_type pos,typename S::size_type x)21 test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
22 {
23 LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos));
24 assert(s.find_last_of(str, pos) == x);
25 if (x != S::npos)
26 assert(x <= pos && x < s.size());
27 }
28
29 template <class S>
30 TEST_CONSTEXPR_CXX20 void
test(const S & s,const S & str,typename S::size_type x)31 test(const S& s, const S& str, typename S::size_type x)
32 {
33 LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str));
34 assert(s.find_last_of(str) == x);
35 if (x != S::npos)
36 assert(x < s.size());
37 }
38
39 template <class S>
test0()40 TEST_CONSTEXPR_CXX20 void test0()
41 {
42 test(S(""), S(""), 0, S::npos);
43 test(S(""), S("laenf"), 0, S::npos);
44 test(S(""), S("pqlnkmbdjo"), 0, S::npos);
45 test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
46 test(S(""), S(""), 1, S::npos);
47 test(S(""), S("bjaht"), 1, S::npos);
48 test(S(""), S("hjlcmgpket"), 1, S::npos);
49 test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
50 test(S("fodgq"), S(""), 0, S::npos);
51 test(S("qanej"), S("dfkap"), 0, S::npos);
52 test(S("clbao"), S("ihqrfebgad"), 0, S::npos);
53 test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, 0);
54 test(S("srdfq"), S(""), 1, S::npos);
55 test(S("oemth"), S("ikcrq"), 1, S::npos);
56 test(S("cdaih"), S("dmajblfhsg"), 1, 1);
57 test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, 1);
58 test(S("cshmd"), S(""), 2, S::npos);
59 test(S("lhcdo"), S("oebqi"), 2, S::npos);
60 test(S("qnsoh"), S("kojhpmbsfe"), 2, 2);
61 test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, 2);
62 test(S("fmtsp"), S(""), 4, S::npos);
63 test(S("khbpm"), S("aobjd"), 4, 2);
64 test(S("pbsji"), S("pcbahntsje"), 4, 3);
65 test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, 4);
66 test(S("eqmpa"), S(""), 5, S::npos);
67 test(S("omigs"), S("kocgb"), 5, 3);
68 test(S("onmje"), S("fbslrjiqkm"), 5, 3);
69 test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, 4);
70 test(S("schfa"), S(""), 6, S::npos);
71 test(S("igdsc"), S("qngpd"), 6, 2);
72 test(S("brqgo"), S("rodhqklgmb"), 6, 4);
73 test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, 4);
74 test(S("hcjitbfapl"), S(""), 0, S::npos);
75 test(S("daiprenocl"), S("ashjd"), 0, 0);
76 test(S("litpcfdghe"), S("mgojkldsqh"), 0, 0);
77 test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, 0);
78 test(S("qpghtfbaji"), S(""), 1, S::npos);
79 test(S("gfshlcmdjr"), S("nadkh"), 1, S::npos);
80 test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 1);
81 test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, 1);
82 test(S("crnklpmegd"), S(""), 5, S::npos);
83 test(S("jsbtafedoc"), S("prqgn"), 5, S::npos);
84 test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 5);
85 test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, 5);
86 test(S("lmofqdhpki"), S(""), 9, S::npos);
87 test(S("hnefkqimca"), S("rtjpa"), 9, 9);
88 test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 7);
89 test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, 9);
90 test(S("elgofjmbrq"), S(""), 10, S::npos);
91 test(S("mjqdgalkpc"), S("dplqa"), 10, 8);
92 test(S("kthqnfcerm"), S("dkacjoptns"), 10, 6);
93 test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, 9);
94 test(S("eqsgalomhb"), S(""), 11, S::npos);
95 test(S("akiteljmoh"), S("lofbc"), 11, 8);
96 test(S("hlbdfreqjo"), S("astoegbfpn"), 11, 9);
97 test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, 9);
98 test(S("snafbdlghrjkpqtoceim"), S(""), 0, S::npos);
99 test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, S::npos);
100 test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 0);
101 test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, 0);
102 test(S("jlnkraeodhcspfgbqitm"), S(""), 1, S::npos);
103 test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, S::npos);
104 test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 1);
105 test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, 1);
106 test(S("hdpkobnsalmcfijregtq"), S(""), 10, S::npos);
107 test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 10);
108 test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 10);
109 test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, 10);
110 test(S("niptglfbosehkamrdqcj"), S(""), 19, S::npos);
111 test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 16);
112 test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 19);
113 test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, 19);
114 test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
115 test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, 19);
116 test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, 18);
117 test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, 19);
118 test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
119 test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, 12);
120 test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, 17);
121 test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, 19);
122 }
123
124 template <class S>
test1()125 TEST_CONSTEXPR_CXX20 void test1()
126 {
127 test(S(""), S(""), S::npos);
128 test(S(""), S("laenf"), S::npos);
129 test(S(""), S("pqlnkmbdjo"), S::npos);
130 test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
131 test(S("nhmko"), S(""), S::npos);
132 test(S("lahfb"), S("irkhs"), 2);
133 test(S("gmfhd"), S("kantesmpgj"), 1);
134 test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), 4);
135 test(S("eolhfgpjqk"), S(""), S::npos);
136 test(S("nbatdlmekr"), S("bnrpe"), 9);
137 test(S("jdmciepkaq"), S("jtdaefblso"), 8);
138 test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), 9);
139 test(S("gprdcokbnjhlsfmtieqa"), S(""), S::npos);
140 test(S("qjghlnftcaismkropdeb"), S("bjaht"), 19);
141 test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 19);
142 test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), 19);
143 }
144
test()145 TEST_CONSTEXPR_CXX20 bool test() {
146 {
147 typedef std::string S;
148 test0<S>();
149 test1<S>();
150 }
151 #if TEST_STD_VER >= 11
152 {
153 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
154 test0<S>();
155 test1<S>();
156 }
157 #endif
158
159 #if TEST_STD_VER > 3
160 { // LWG 2946
161 std::string s = " !";
162 assert(s.find_last_of({"abc", 1}) == std::string::npos);
163 }
164 #endif
165
166 return true;
167 }
168
main(int,char **)169 int main(int, char**)
170 {
171 test();
172 #if TEST_STD_VER > 17
173 static_assert(test());
174 #endif
175
176 return 0;
177 }
178