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 // <string>
11
12 // constexpr size_type find_first_of(charT c, size_type pos = 0) const;
13
14 #include <experimental/string_view>
15 #include <cassert>
16
17 #include "constexpr_char_traits.hpp"
18
19 template <class S>
20 void
test(const S & s,typename S::value_type c,typename S::size_type pos,typename S::size_type x)21 test(const S& s, typename S::value_type c, typename S::size_type pos,
22 typename S::size_type x)
23 {
24 assert(s.find_first_of(c, pos) == x);
25 if (x != S::npos)
26 assert(pos <= x && x < s.size());
27 }
28
29 template <class S>
30 void
test(const S & s,typename S::value_type c,typename S::size_type x)31 test(const S& s, typename S::value_type c, typename S::size_type x)
32 {
33 assert(s.find_first_of(c) == x);
34 if (x != S::npos)
35 assert(x < s.size());
36 }
37
main()38 int main()
39 {
40 {
41 typedef std::experimental::string_view S;
42 test(S(""), 'e', 0, S::npos);
43 test(S(""), 'e', 1, S::npos);
44 test(S("kitcj"), 'e', 0, S::npos);
45 test(S("qkamf"), 'e', 1, S::npos);
46 test(S("nhmko"), 'e', 2, S::npos);
47 test(S("tpsaf"), 'e', 4, S::npos);
48 test(S("lahfb"), 'e', 5, S::npos);
49 test(S("irkhs"), 'e', 6, S::npos);
50 test(S("gmfhdaipsr"), 'e', 0, S::npos);
51 test(S("kantesmpgj"), 'e', 1, 4);
52 test(S("odaftiegpm"), 'e', 5, 6);
53 test(S("oknlrstdpi"), 'e', 9, S::npos);
54 test(S("eolhfgpjqk"), 'e', 10, S::npos);
55 test(S("pcdrofikas"), 'e', 11, S::npos);
56 test(S("nbatdlmekrgcfqsophij"), 'e', 0, 7);
57 test(S("bnrpehidofmqtcksjgla"), 'e', 1, 4);
58 test(S("jdmciepkaqgotsrfnhlb"), 'e', 10, S::npos);
59 test(S("jtdaefblsokrmhpgcnqi"), 'e', 19, S::npos);
60 test(S("hkbgspofltajcnedqmri"), 'e', 20, S::npos);
61 test(S("oselktgbcapndfjihrmq"), 'e', 21, S::npos);
62
63 test(S(""), 'e', S::npos);
64 test(S("csope"), 'e', 4);
65 test(S("gfsmthlkon"), 'e', S::npos);
66 test(S("laenfsbridchgotmkqpj"), 'e', 2);
67 }
68
69 #if _LIBCPP_STD_VER > 11
70 {
71 typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
72 constexpr SV sv1;
73 constexpr SV sv2 { "abcde", 5 };
74
75 static_assert (sv1.find_first_of( 'e', 0 ) == SV::npos, "" );
76 static_assert (sv1.find_first_of( 'e', 1 ) == SV::npos, "" );
77 static_assert (sv2.find_first_of( 'q', 0 ) == SV::npos, "" );
78 static_assert (sv2.find_first_of( 'e', 1 ) == 4, "" );
79 static_assert (sv2.find_first_of( 'e', 5 ) == SV::npos, "" );
80 }
81 #endif
82 }
83