AimRT/_deps/boost-src/libs/leaf/test/context_deduction_test.cpp
2025-01-12 20:40:48 +08:00

180 lines
8.3 KiB
C++

// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
// 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)
#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
# include "leaf.hpp"
#else
# include <boost/leaf/config.hpp>
# include <boost/leaf/context.hpp>
# include <boost/leaf/pred.hpp>
# include <boost/leaf/handle_errors.hpp>
#endif
#include "_test_ec.hpp"
namespace leaf = boost::leaf;
template <class... T>
struct unwrap_tuple;
template <>
struct unwrap_tuple<std::tuple<>>
{
using type = std::tuple<>;
};
template <template <class> class S, class... E>
struct unwrap_tuple<std::tuple<S<E>...>>
{
using type = std::tuple<E...>;
};
template <class... H>
typename unwrap_tuple<typename std::decay<decltype(std::declval<typename leaf::context_type_from_handlers<H...>>().tup())>::type>::type * expd( H && ... )
{
return 0;
}
template <class T, class U>
void test( U * )
{
static_assert(std::is_same<T,U>::value,"context deduction");
}
template <int> struct info { int value; };
enum class my_error_code
{
ok,
error1,
error2,
error3
};
namespace std
{
template <> struct is_error_code_enum<my_error_code>: std::true_type { };
}
enum class my_error_condition
{
ok,
cond1
};
namespace std
{
template <> struct is_error_condition_enum<my_error_condition>: std::true_type { };
}
void not_called_on_purpose()
{
test< std::tuple<> >( expd([]( leaf::error_info const & ){ }) );
test< std::tuple<info<1>> >( expd([]( info<1> ){ }) );
test< std::tuple<info<1>> >( expd([]( info<1> const ){ }) );
test< std::tuple<info<1>> >( expd([]( info<1> const & ){ }) );
test< std::tuple<info<1>> >( expd([]( info<1>, leaf::error_info const & ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( leaf::error_info const &, info<1> ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( leaf::error_info const &, info<1> ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( leaf::error_info const &, info<1>, info<2> ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( leaf::error_info const &, info<1>, info<2> ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, leaf::error_info const & ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, leaf::error_info const & ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, leaf::error_info const &, info<2> ){ }, []( info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, leaf::error_info const &, info<2> ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( leaf::error_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( leaf::error_info const &, info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( leaf::error_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( leaf::error_info const &, info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( info<2>, leaf::error_info const & ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1> ){ }, []( info<1>, leaf::error_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( info<2>, leaf::error_info const & ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( info<1>, leaf::error_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<2> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<1>, info<2> ){ }, []( info<1>, info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<1>, info<2> ){ }, []( info<1>, info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1>, info<2> ){ }, []( info<2> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1>, info<2> ){ }, []( info<2> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<2> ){ }, []( info<3>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<2> ){ }, []( info<3>, info<2> ){ }) );
test< std::tuple<info<1>,info<3>,info<2>> >( expd([]( info<1>, info<3> ){ }, []( info<2> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<3>,info<2>> >( expd([]( info<1>, info<3> ){ }, []( info<2> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<2>, info<3> ){ }, []( info<3> ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> ){ }, []( info<2>, info<3> ){ }, []( info<3> ){ }) );
test< std::tuple<my_error_code> >( expd([]( leaf::match<my_error_code, my_error_code::error1> ){ }) );
#if BOOST_LEAF_CFG_STD_SYSTEM_ERROR
test< std::tuple<std::error_code> >( expd([]( leaf::match<leaf::condition<cond_x>, cond_x::x00> ){ }) );
#endif
test< std::tuple<info<1>> >( expd([]( leaf::match_value<info<1>,42> ){ }) );
#if BOOST_LEAF_CFG_STD_SYSTEM_ERROR
test< std::tuple<std::error_code> >( expd([]( leaf::match<leaf::condition<my_error_condition>, my_error_condition::cond1> ){ }) );
#if __cplusplus >= 201703L
test< std::tuple<std::error_code> >( expd([]( leaf::match<std::error_code, my_error_code::error1> ){ }) );
test< std::tuple<std::error_code> >( expd([]( leaf::match<std::error_code, my_error_condition::cond1> ){ }) );
#endif
#endif
#ifndef BOOST_LEAF_NO_EXCEPTIONS
test< std::tuple<info<1>> >( expd([]( leaf::catch_<std::exception>, info<1> ){ }) );
#endif
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> const *, info<2> ){ }, []( info<1>, info<3> const * ){ }) );
test< std::tuple<info<1>,info<2>,info<3>> >( expd([]( info<1> const, info<2> ){ }, []( info<1> const *, info<3> ){ }) );
#if BOOST_LEAF_CFG_DIAGNOSTICS
test< std::tuple<info<1>,info<2>,leaf::leaf_detail::e_unexpected_count> >( expd([]( info<1>, info<2>, leaf::diagnostic_info const & ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>,leaf::leaf_detail::e_unexpected_info> >( expd([]( info<1>, info<2> ){ }, []( info<1>, leaf::verbose_diagnostic_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>,leaf::leaf_detail::e_unexpected_count,leaf::leaf_detail::e_unexpected_info> >( expd([]( info<1>, info<2>, leaf::diagnostic_info const & ){ }, []( info<1>, leaf::verbose_diagnostic_info const &, info<2> ){ }) );
#else
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2>, leaf::diagnostic_info const & ){ }, []( info<1>, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2> ){ }, []( info<1>, leaf::verbose_diagnostic_info const &, info<2> ){ }) );
test< std::tuple<info<1>,info<2>> >( expd([]( info<1>, info<2>, leaf::diagnostic_info const & ){ }, []( info<1>, leaf::verbose_diagnostic_info const &, info<2> ){ }) );
#endif
{
auto error_handlers = std::make_tuple(
[]( info<2> ) { },
[]( info<3> ) { } );
test< std::tuple<info<1>, info<2>, info<3>, info<4>, info<5>>>( expd(
[]( info<1> ) { },
error_handlers,
[]( info<4>, info<5> ) { } ) );
}
{
auto error_handlers1 = std::make_tuple(
[]( info<4> ) { },
[]( info<5> ) { } );
auto error_handlers2 = std::make_tuple(
[]( info<2> ) { },
[]( info<3> ) { },
error_handlers1 );
test< std::tuple<info<1>, info<2>, info<3>, info<4>, info<5>, info<6>>>( expd(
[]( info<1> ) { },
error_handlers2,
[]( info<4>, info<5> ) { },
[]( info<6> ) { } ) );
}
}
int main()
{
return 0;
}