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100 lines
3.2 KiB
Python
Executable File
100 lines
3.2 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright (c) 2016 Antony Polukhin
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#
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# Distributed under the Boost Software License, Version 1.0. (See accompanying
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# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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############################################################################################################################
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import sys
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from string import ascii_letters
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PROLOGUE = """// Copyright (c) 2016 Antony Polukhin
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//////////////// This is an auto generated header. Modify pfr/misc/generate_cpp17.py instead. ////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_PFR_CORE17_GENERATED_HPP
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#define BOOST_PFR_CORE17_GENERATED_HPP
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#pragma once
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#if __cplusplus < 201606L /* Oulu meeting, not the exact value */
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# error C++17 is required for this header.
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#endif
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#include <boost/pfr/core.hpp>
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namespace boost { namespace pfr { namespace detail {
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template <class... Args>
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constexpr auto make_tuple_of_references(Args&&... args) noexcept {
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return sequence_tuple::tuple<Args&...>{ std::forward<Args>(args)... };
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}
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template <class T>
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constexpr auto as_tuple_impl(T&& /*val*/, size_t_<0>) noexcept {
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return sequence_tuple::tuple<>{};
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}
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"""
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############################################################################################################################
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EPILOGUE = """
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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template <class T>
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constexpr auto as_tuple(const T& val) noexcept {
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typedef size_t_<fields_count<T>()> fields_count_tag;
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return detail::as_tuple_impl(val, fields_count_tag{});
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}
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template <class T>
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constexpr auto as_tuple(T& val) noexcept {
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typedef size_t_<fields_count<T>()> fields_count_tag;
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return detail::as_tuple_impl(val, fields_count_tag{});
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}
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template <class T>
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using as_tuple_t = decltype( ::boost::pfr::detail::as_tuple(std::declval<T&>()) );
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}}} // namespace boost::pfr::detail
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#endif // BOOST_PFR_CORE17_GENERATED_HPP
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"""
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############################################################################################################################
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indexes = ""
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print PROLOGUE
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funcs_count = 100 if len(sys.argv) == 1 else int(sys.argv[1])
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max_args_on_a_line = len(ascii_letters)
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for i in xrange(funcs_count):
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if i == 0:
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indexes = " "
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elif i % max_args_on_a_line == 0:
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indexes += ",\n "
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else:
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indexes += ","
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indexes += ascii_letters[i % max_args_on_a_line] + str(i / len(ascii_letters))
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print "template <class T>"
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print "constexpr auto as_tuple_impl(T&& val, size_t_<" + str(i + 1) + ">) noexcept {"
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print " auto& ["
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print indexes
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print " ] = std::forward<T>(val);"
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print ""
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print " return ::boost::pfr::detail::make_tuple_of_references("
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print indexes
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print " );"
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print "}\n"
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print EPILOGUE
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