//===----------------------------------------------------------------------===//
//
// 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: no-exceptions
// <format>
// constexpr size_t next_arg_id();
#include <format>
#include <cassert>
#include <cstring>
#include <string_view>
#include "test_macros.h"
constexpr bool test() {
std::format_parse_context context("", 10);
for (std::size_t i = 0; i < 10; ++i)
assert(i == context.next_arg_id());
return true;
}
void test_exception() {
std::format_parse_context context("", 1);
context.check_arg_id(0);
try {
TEST_IGNORE_NODISCARD context.next_arg_id();
assert(false);
} catch ([[maybe_unused]] const std::format_error& e) {
LIBCPP_ASSERT(std::strcmp(e.what(), "Using automatic argument numbering in manual argument numbering mode") == 0);
return;
}
assert(false);
}
int main(int, char**) {
test();
test_exception();
static_assert(test());
return 0;
}