mirror of
https://github.com/boostorg/parser.git
synced 2026-01-19 04:22:13 +00:00
63 lines
1.7 KiB
Python
Executable File
63 lines
1.7 KiB
Python
Executable File
#!/usr/bin/python3
|
|
|
|
# Copyright (c) 2023 T. Zachary Laine
|
|
#
|
|
# 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)
|
|
|
|
print('''// Copyright (c) 2023 T. Zachary Laine
|
|
//
|
|
// 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)
|
|
|
|
// Warning: This header is auto-generated (see misc/generate_aggr_to_tuple.py).
|
|
// The lack of include guards is intentional.
|
|
|
|
namespace boost::parser::detail {
|
|
|
|
''')
|
|
|
|
specializations = 100
|
|
bindings = []
|
|
|
|
def bindings_str(fn, max_bindings_on_a_line):
|
|
num_bindings = len(bindings)
|
|
mapped = map(fn, bindings)
|
|
retval = ''
|
|
for i in range(int(num_bindings / max_bindings_on_a_line) + 1):
|
|
lo = i * max_bindings_on_a_line
|
|
if num_bindings <= lo:
|
|
return retval
|
|
hi = min(lo + max_bindings_on_a_line, num_bindings)
|
|
retval += ' ' + ', '.join(map(fn, bindings[lo:hi]))
|
|
if hi < num_bindings:
|
|
retval += ','
|
|
retval += '\n'
|
|
return retval
|
|
|
|
def destructuring_str():
|
|
return f'''auto & [
|
|
{bindings_str(lambda x: x, 15)}] = x;'''
|
|
|
|
def typenames_str():
|
|
return f'''<
|
|
{bindings_str(lambda x: f'decltype({x}) &', 5)}>'''
|
|
|
|
def initializers_str():
|
|
return f'''return parser::tuple{typenames_str()}(
|
|
{bindings_str(lambda x: f'{x}', 15)});'''
|
|
|
|
for i in range(1, specializations + 1):
|
|
bindings.append('_{:02x}'.format(i))
|
|
|
|
print(f'''template<> struct tie_aggregate_impl<{i}> {{
|
|
template<typename T> static constexpr auto call(T & x) {{''')
|
|
print(destructuring_str())
|
|
print(initializers_str())
|
|
print('''}
|
|
};
|
|
|
|
''')
|
|
|
|
print('}\n')
|