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// 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/on_error.hpp>
# include <boost/leaf/handle_errors.hpp>
# include <boost/leaf/result.hpp>
#endif
#include "lightweight_test.hpp"
namespace leaf = boost::leaf;
template <int>
struct info
{
int value;
};
leaf::error_id f0()
{
auto load = leaf::on_error( [] { return info<0>{0}; } );
return leaf::new_error( info<2>{2} );
}
leaf::error_id f1()
{
auto load = leaf::on_error( [] { return info<0>{-1}; }, [] { return info<1>{1}; }, [] { return info<2>{-1}; } );
return f0();
}
leaf::error_id f2()
{
return f1().load( info<3>{3} );
}
int main()
{
int r = leaf::try_handle_all(
[]() -> leaf::result<int>
{
return f2();
},
[]( info<0> i0, info<1> i1, info<2> i2, info<3> i3 )
{
BOOST_TEST_EQ(i0.value, 0);
BOOST_TEST_EQ(i1.value, 1);
BOOST_TEST_EQ(i2.value, 2);
BOOST_TEST_EQ(i3.value, 3);
return 1;
},
[]
{
return 2;
} );
BOOST_TEST_EQ(r, 1);
return boost::report_errors();
}
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