164b297099
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@210659 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string_view>
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// constexpr size_type find(charT c, size_type pos = 0) const;
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#include <experimental/string_view>
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#include <cassert>
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#include "constexpr_char_traits.hpp"
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template <class S>
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void
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test(const S& s, typename S::value_type c, typename S::size_type pos,
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typename S::size_type x)
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{
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assert(s.find(c, pos) == x);
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if (x != S::npos)
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assert(pos <= x && x + 1 <= s.size());
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}
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template <class S>
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void
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test(const S& s, typename S::value_type c, typename S::size_type x)
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{
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assert(s.find(c) == x);
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if (x != S::npos)
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assert(0 <= x && x + 1 <= s.size());
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}
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int main()
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{
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{
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typedef std::experimental::string_view S;
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test(S(""), 'c', 0, S::npos);
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test(S(""), 'c', 1, S::npos);
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test(S("abcde"), 'c', 0, 2);
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test(S("abcde"), 'c', 1, 2);
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test(S("abcde"), 'c', 2, 2);
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test(S("abcde"), 'c', 4, S::npos);
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test(S("abcde"), 'c', 5, S::npos);
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test(S("abcde"), 'c', 6, S::npos);
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test(S("abcdeabcde"), 'c', 0, 2);
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test(S("abcdeabcde"), 'c', 1, 2);
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test(S("abcdeabcde"), 'c', 5, 7);
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test(S("abcdeabcde"), 'c', 9, S::npos);
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test(S("abcdeabcde"), 'c', 10, S::npos);
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test(S("abcdeabcde"), 'c', 11, S::npos);
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test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
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test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
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test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
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test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
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test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
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test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
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test(S(""), 'c', S::npos);
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test(S("abcde"), 'c', 2);
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test(S("abcdeabcde"), 'c', 2);
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test(S("abcdeabcdeabcdeabcde"), 'c', 2);
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}
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#if _LIBCPP_STD_VER > 11
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{
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typedef std::experimental::basic_string_view<char, constexpr_char_traits<char>> SV;
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constexpr SV sv1;
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constexpr SV sv2 { "abcde", 5 };
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static_assert (sv1.find( 'c', 0 ) == SV::npos, "" );
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static_assert (sv1.find( 'c', 1 ) == SV::npos, "" );
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static_assert (sv2.find( 'c', 0 ) == 2, "" );
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static_assert (sv2.find( 'c', 1 ) == 2, "" );
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static_assert (sv2.find( 'c', 2 ) == 2, "" );
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static_assert (sv2.find( 'c', 3 ) == SV::npos, "" );
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static_assert (sv2.find( 'c', 4 ) == SV::npos, "" );
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}
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#endif
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}
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