boost/pfr
2
0
Fork 0
mirror of https://github.com/boostorg/pfr.git synced 2026-01-19 04:22:13 +00:00
Code Issues Projects Releases Wiki Activity

Tested on a C++17 compatible compiler, fixed a bunch of issues and made all the tests compil and run successfully

Browse Source
This commit is contained in:
Antony Polukhin
2017-05-29 23:24:17 +03:00
parent 33ec908c44
commit 62a9e5b758
11 changed files with 408 additions and 268 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
misc/generate_cpp17.py
View File

@@ -1,6 +1,6 @@
#!/usr/bin/python
# Copyright (c) 2016 Antony Polukhin
# Copyright (c) 2016-2017 Antony Polukhin
#
# Distributed under the Boost Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -10,8 +10,8 @@
import sys
import string
# Skipping some letters that mey produce keywords or are hard to read
ascii_letters = string.ascii_letters.replace("o", "").replace("O", "").replace("i", "").replace("I", "")
# Skipping some letters that may produce keywords or are hard to read, or shadow template parameters
ascii_letters = string.ascii_letters.replace("o", "").replace("O", "").replace("i", "").replace("I", "").replace("T", "")
PROLOGUE = """// Copyright (c) 2016-2017 Antony Polukhin
//
@@ -29,7 +29,7 @@ PROLOGUE = """// Copyright (c) 2016-2017 Antony Polukhin
#include <boost/pfr/detail/config.hpp>
#if BOOST_PFR_USE_CPP17
#if !BOOST_PFR_USE_CPP17
# error C++17 is required for this header.
#endif
@@ -48,6 +48,18 @@ constexpr auto as_tuple_impl(T&& /*val*/, size_t_<0>) noexcept {
return sequence_tuple::tuple<>{};
}
template <class T>
constexpr auto as_tuple_impl(T&& val, size_t_<1>, std::enable_if_t<std::is_class< std::remove_cv_t<std::remove_reference_t<T>> >::value>* = 0) noexcept {
auto& [a] = std::forward<T>(val);
return ::boost::pfr::detail::make_tuple_of_references(a);
}
template <class T>
constexpr auto as_tuple_impl(T&& val, size_t_<1>, std::enable_if_t<!std::is_class< std::remove_cv_t<std::remove_reference_t<T>> >::value>* = 0) noexcept {
return ::boost::pfr::detail::make_tuple_of_references( std::forward<T>(val) );
}
"""
############################################################################################################################
@@ -57,13 +69,13 @@ EPILOGUE = """
template <class T>
constexpr auto as_tuple(const T& val) noexcept {
typedef size_t_<fields_count<T>()> fields_count_tag;
return detail::as_tuple_impl(val, fields_count_tag{});
return boost::pfr::detail::as_tuple_impl(val, fields_count_tag{});
}
template <class T>
constexpr auto as_tuple(T& val) noexcept {
typedef size_t_<fields_count<T>()> fields_count_tag;
return detail::as_tuple_impl(val, fields_count_tag{});
return boost::pfr::detail::as_tuple_impl(val, fields_count_tag{});
}
template <class T>
@@ -75,15 +87,24 @@ using as_tuple_t = decltype( ::boost::pfr::detail::as_tuple(std::declval<T&>())
"""
############################################################################################################################
generate_sfinae_attempts = False
indexes = ""
if generate_sfinae_attempts:
print """
template <class T, std::size_t I>
constexpr auto as_tuple_impl(T&& val, size_t_<I>) noexcept {
return as_tuple_impl( std::forward<T>(val), size_t_<I - 1>{});
}
"""
indexes = " a"
print PROLOGUE
funcs_count = 100 if len(sys.argv) == 1 else int(sys.argv[1])
max_args_on_a_line = len(ascii_letters)
for i in xrange(funcs_count):
if i == 0:
indexes = " "
elif i % max_args_on_a_line == 0:
for i in xrange(1, funcs_count):
if i % max_args_on_a_line == 0:
indexes += ",\n "
else:
indexes += ","
@@ -108,4 +129,10 @@ for i in xrange(funcs_count):
print "}\n"
if generate_sfinae_attempts:
print "template <class T>"
print "constexpr auto as_tuple_impl(T&& val, size_t_<" + str(i + 1) + "> v) noexcept"
print " ->decltype( ::boost::pfr::detail::as_tuple_impl0(std::forward<T>(val), v) )"
print "{ return ::boost::pfr::detail::as_tuple_impl0(std::forward<T>(val), v); }\n"
print EPILOGUE