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//===----------------------------------------------------------------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: libcpp-no-concepts
// UNSUPPORTED: libcpp-has-no-incomplete-format
// <format>
// constexpr explicit
// basic_format_parse_context(basic_string_view<charT> fmt,
// size_t num_args = 0) noexcept
#include <format>
#include <cassert>
#include <string_view>
#include <type_traits>
#include "test_macros.h"
template <class CharT>
constexpr void test(const CharT* fmt) {
// Validate the constructor is explicit.
static_assert(
!std::is_convertible_v<std::basic_string_view<CharT>,
std::basic_format_parse_context<CharT> >);
static_assert(
!std::is_copy_constructible_v<std::basic_format_parse_context<CharT> >);
static_assert(
!std::is_copy_assignable_v<std::basic_format_parse_context<CharT> >);
// The move operations are implicitly deleted due to the
// deleted copy operations.
static_assert(
!std::is_move_constructible_v<std::basic_format_parse_context<CharT> >);
static_assert(
!std::is_move_assignable_v<std::basic_format_parse_context<CharT> >);
ASSERT_NOEXCEPT(
std::basic_format_parse_context{std::basic_string_view<CharT>{}});
ASSERT_NOEXCEPT(
std::basic_format_parse_context{std::basic_string_view<CharT>{}, 42});
{
std::basic_format_parse_context<CharT> context(fmt);
assert(context.begin() == &fmt[0]);
assert(context.end() == &fmt[3]);
}
{
std::basic_string_view view{fmt};
std::basic_format_parse_context context(view);
assert(context.begin() == view.begin());
assert(context.end() == view.end());
}
}
constexpr bool test() {
test("abc");
test(L"abc");
#ifndef _LIBCPP_HAS_NO_CHAR8_T
test(u8"abc");
#endif
#ifndef TEST_HAS_NO_UNICODE_CHARS
test(u"abc");
test(U"abc");
#endif
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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