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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <string_view>
// constexpr size_type find(charT c, size_type pos = 0) const;
#include <experimental/string_view>
#include <cassert>
#include "constexpr_char_traits.hpp"
template <class S>
void
test(const S& s, typename S::value_type c, typename S::size_type pos,
typename S::size_type x)
{
assert(s.find(c, pos) == x);
if (x != S::npos)
assert(pos <= x && x + 1 <= s.size());
}
template <class S>
void
test(const S& s, typename S::value_type c, typename S::size_type x)
{
assert(s.find(c) == x);
if (x != S::npos)
assert(0 <= x && x + 1 <= s.size());
}
int main()
{
{
typedef std::experimental::string_view S;
test(S(""), 'c', 0, S::npos);
test(S(""), 'c', 1, S::npos);
test(S("abcde"), 'c', 0, 2);
test(S("abcde"), 'c', 1, 2);
test(S("abcde"), 'c', 2, 2);
test(S("abcde"), 'c', 4, S::npos);
test(S("abcde"), 'c', 5, S::npos);
test(S("abcde"), 'c', 6, S::npos);
test(S("abcdeabcde"), 'c', 0, 2);
test(S("abcdeabcde"), 'c', 1, 2);
test(S("abcdeabcde"), 'c', 5, 7);
test(S("abcdeabcde"), 'c', 9, S::npos);
test(S("abcdeabcde"), 'c', 10, S::npos);
test(S("abcdeabcde"), 'c', 11, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
test(S(""), 'c', S::npos);
test(S("abcde"), 'c', 2);
test(S("abcdeabcde"), 'c', 2);
test(S("abcdeabcdeabcdeabcde"), 'c', 2);
}
#if _LIBCPP_STD_VER > 11
{
typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
constexpr SV sv1;
constexpr SV sv2 { "abcde", 5 };
static_assert (sv1.find( 'c', 0 ) == SV::npos, "" );
static_assert (sv1.find( 'c', 1 ) == SV::npos, "" );
static_assert (sv2.find( 'c', 0 ) == 2, "" );
static_assert (sv2.find( 'c', 1 ) == 2, "" );
static_assert (sv2.find( 'c', 2 ) == 2, "" );
static_assert (sv2.find( 'c', 3 ) == SV::npos, "" );
static_assert (sv2.find( 'c', 4 ) == SV::npos, "" );
}
#endif
}
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