config.hpp

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// Copyright (C) 2022-2023 by Camden Mannett.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
// If changing these or adding new ones, reflect those changes in config.cmake
#ifndef AR_MAX_CTS_SIZE
#    define AR_MAX_CTS_SIZE 128
#endif
 
#ifndef AR_LONG_PREFIX
#    define AR_LONG_PREFIX "--"
#endif
 
#ifndef AR_SHORT_PREFIX
#    define AR_SHORT_PREFIX "-"
#endif
 
#ifndef AR_ALLOCATOR
#    define AR_ALLOCATOR std::allocator
#endif
 
#ifndef AR_UTF8_TRAILING_WINDOW_SIZE
#    define AR_UTF8_TRAILING_WINDOW_SIZE 16
#endif
 
#ifndef AR_DISABLE_CPP20_STRINGS
#    define AR_DISABLE_CPP20_STRINGS false
#endif
 
#include "arg_router/utility/utf8.hpp"
 
namespace arg_router::config
{
constexpr auto long_prefix = std::string_view{AR_LONG_PREFIX};
 
constexpr auto short_prefix = std::string_view{AR_SHORT_PREFIX};
 
static_assert(utility::utf8::count(short_prefix) == 1, "Short prefix must be one character");
 
static_assert(utility::utf8::count(long_prefix) >= utility::utf8::count(short_prefix),
              "Long prefix must be longer or the same as short prefix");
 
template <typename T>
using allocator = AR_ALLOCATOR<T>;
 
#if (__cplusplus >= 202002L) && !AR_DISABLE_CPP20_STRINGS
#    define AR_ENABLE_CPP20_STRINGS
#endif
 
#if (!defined(__clang__) && defined(_MSC_VER) && (_MSC_VER >= 1936))
#    define MSVC_1936_WORKAROUND 1
#endif
}  // namespace arg_router::config