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// Copyright 2018-2024 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/result.hpp>
# include <boost/leaf/handle_errors.hpp>
# include <boost/leaf/pred.hpp>
#endif
#include "lightweight_test.hpp"
namespace leaf = boost::leaf;
template <int> struct info { int value; };
template <class T>
leaf::result<T> test()
{
leaf::result<T> r1 = leaf::new_error(info<42>{40});
leaf::result<T> r2 = r1.load(info<1>{});
leaf::result<T> r3 = r2.load(info<2>{2}, []{ return info<3>{3}; });
leaf::result<T> r4 = r3.load([](info<42> & x){ ++x.value; });
leaf::result<T> r5 = r4.load([](info<42> & x){ ++x.value; }, [](info<1> & x){ ++x.value; });
return r5;
}
int main()
{
{
int r = leaf::try_handle_all(
[]
{
return test<int>();
},
[]( leaf::match_value<info<42>, 42>, leaf::match_value<info<1>, 1>, leaf::match_value<info<2>, 2>, leaf::match_value<info<3>, 3> )
{
return 1;
},
[]
{
return 2;
} );
BOOST_TEST_EQ(r, 1);
}
{
int r = leaf::try_handle_all(
[]() -> leaf::result<int>
{
BOOST_LEAF_CHECK(test<void>());
return 0;
},
[]( leaf::match_value<info<42>, 42>, leaf::match_value<info<1>, 1>, leaf::match_value<info<2>, 2>, leaf::match_value<info<3>, 3> )
{
return 1;
},
[]
{
return 2;
} );
BOOST_TEST_EQ(r, 1);
}
return boost::report_errors();
}
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