74 lines
1.5 KiB
C++
74 lines
1.5 KiB
C++
// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
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# include "leaf.hpp"
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#else
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# include <boost/leaf/on_error.hpp>
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# include <boost/leaf/handle_errors.hpp>
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# include <boost/leaf/result.hpp>
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#endif
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#include "lightweight_test.hpp"
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#include <sstream>
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namespace leaf = boost::leaf;
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int global;
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int get_global() noexcept
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{
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return global;
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}
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template <int>
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struct info
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{
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int value;
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};
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leaf::error_id g()
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{
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global = 0;
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auto load = leaf::on_error( []{ return info<42>{get_global()}; }, []{ return info<-42>{-42}; } );
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global = 42;
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return leaf::new_error();
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}
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leaf::error_id f()
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{
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return g();
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}
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int main()
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{
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int r = leaf::try_handle_all(
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[]() -> leaf::result<int>
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{
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return f();
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},
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[]( info<42> const & i42, leaf::diagnostic_info const & di )
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{
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BOOST_TEST_EQ(i42.value, 42);
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#if BOOST_LEAF_CFG_STD_STRING
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std::stringstream ss; ss << di;
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std::string s = ss.str();
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std::cout << s;
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#if BOOST_LEAF_CFG_DIAGNOSTICS
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BOOST_TEST(s.find("info<-42>")!=s.npos);
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#else
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BOOST_TEST(s.find("BOOST_LEAF_CFG_DIAGNOSTICS")!=s.npos);
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#endif
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#endif
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return 1;
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},
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[]
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{
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return 2;
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} );
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BOOST_TEST_EQ(r, 1);
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return boost::report_errors();
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}
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