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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef SUPPORT_TEST_FORMAT_CONTEXT_HPP
#define SUPPORT_TEST_FORMAT_CONTEXT_HPP
/**
* @file Helper functions to create a @ref std::basic_format_context.
*
* Since the standard doesn't specify how a @ref std::basic_format_context is
* constructed this is implementation defined. To make the public API tests of
* the class generic this header defines helper functions to create the
* required object.
*
* @note This requires every standard library implementation to write their own
* helper function. Vendors are encouraged to file a PR at
* https://github.com/llvm/llvm-project so their specific implementation can be
* part of this file.
*/
#include "test_macros.h"
#if TEST_STD_VER < 20
#error "The format header requires at least C++20"
#endif
#include <format>
#ifndef TEST_HAS_NO_LOCALIZATION
# include <locale>
#endif
#ifdef _LIBCPP_VERSION
/** Creates a std::basic_format_context as-if the formatting function takes no locale. */
template <class OutIt, class CharT>
std::basic_format_context<OutIt, CharT> test_format_context_create(
OutIt out_it,
std::basic_format_args<std::basic_format_context<OutIt, CharT>> args) {
return std::__format_context_create(std::move(out_it), args);
}
# ifndef TEST_HAS_NO_LOCALIZATION
/** Creates a std::basic_format_context as-if the formatting function takes locale. */
template <class OutIt, class CharT>
std::basic_format_context<OutIt, CharT> test_format_context_create(
OutIt out_it,
std::basic_format_args<std::basic_format_context<OutIt, CharT>> args,
std::locale loc) {
return std::__format_context_create(std::move(out_it), args, std::move(loc));
}
# endif // TEST_HAS_NO_LOCALIZATION
#else // _LIBCPP_VERSION
# error \
"Please create a vendor specific version of the test typedef and file a PR at https://github.com/llvm/llvm-project"
#endif // _LIBCPP_VERSION
#endif // SUPPORT_TEST_FORMAT_CONTEXT_HPP
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