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_view>
11
12 // constexpr size_type find_first_not_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_not_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_not_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(""), 'q', 0, S::npos);
43 test(S(""), 'q', 1, S::npos);
44 test(S("kitcj"), 'q', 0, 0);
45 test(S("qkamf"), 'q', 1, 1);
46 test(S("nhmko"), 'q', 2, 2);
47 test(S("tpsaf"), 'q', 4, 4);
48 test(S("lahfb"), 'q', 5, S::npos);
49 test(S("irkhs"), 'q', 6, S::npos);
50 test(S("gmfhdaipsr"), 'q', 0, 0);
51 test(S("kantesmpgj"), 'q', 1, 1);
52 test(S("odaftiegpm"), 'q', 5, 5);
53 test(S("oknlrstdpi"), 'q', 9, 9);
54 test(S("eolhfgpjqk"), 'q', 10, S::npos);
55 test(S("pcdrofikas"), 'q', 11, S::npos);
56 test(S("nbatdlmekrgcfqsophij"), 'q', 0, 0);
57 test(S("bnrpehidofmqtcksjgla"), 'q', 1, 1);
58 test(S("jdmciepkaqgotsrfnhlb"), 'q', 10, 10);
59 test(S("jtdaefblsokrmhpgcnqi"), 'q', 19, 19);
60 test(S("hkbgspofltajcnedqmri"), 'q', 20, S::npos);
61 test(S("oselktgbcapndfjihrmq"), 'q', 21, S::npos);
62
63 test(S(""), 'q', S::npos);
64 test(S("q"), 'q', S::npos);
65 test(S("qqq"), 'q', S::npos);
66 test(S("csope"), 'q', 0);
67 test(S("gfsmthlkon"), 'q', 0);
68 test(S("laenfsbridchgotmkqpj"), 'q', 0);
69 }
70
71 #if _LIBCPP_STD_VER > 11
72 {
73 typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
74 constexpr SV sv1;
75 constexpr SV sv2 { "abcde", 5 };
76
77 static_assert (sv1.find_first_not_of( 'q', 0 ) == SV::npos, "" );
78 static_assert (sv1.find_first_not_of( 'q', 1 ) == SV::npos, "" );
79 static_assert (sv2.find_first_not_of( 'q', 0 ) == 0, "" );
80 static_assert (sv2.find_first_not_of( 'q', 1 ) == 1, "" );
81 static_assert (sv2.find_first_not_of( 'q', 5 ) == SV::npos, "" );
82 }
83 #endif
84 }
85