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123 lines
2.2 KiB
C++
123 lines
2.2 KiB
C++
//Copyright (c) 2018 Emil Dotchevski
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//Copyright (c) 2018 Second Spectrum, 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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#include <boost/leaf/expect.hpp>
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#include <boost/leaf/exception.hpp>
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#include <boost/leaf/preload.hpp>
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#include "boost/core/lightweight_test.hpp"
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#include <functional>
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namespace leaf = boost::leaf;
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struct my_error: std::exception { };
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std::function<void()> thrower;
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template <int A>
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struct info
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{
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int value;
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};
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void f1()
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{
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thrower();
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}
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void f2()
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{
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leaf::expect<info<1>> exp;
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try
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{
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f1();
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BOOST_TEST(false);
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}
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catch( std::exception const & ex )
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{
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leaf::get_error(ex).propagate( info<2>{2} );
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throw;
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}
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}
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void f3()
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{
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leaf::expect<info<2>,info<3>> exp;
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auto propagate = leaf::defer( [ ] { return info<4>{4}; } );
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f2();
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}
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void f4()
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{
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leaf::expect<info<1>,info<2>,info<3>,info<4>> exp;
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try
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{
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f3();
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BOOST_TEST(false);
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}
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catch( my_error const & e )
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{
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int c1=0, c2=0;
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handle_exception( exp, e,
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[&c1]( info<1>, info<2>, info<3>, info<4> )
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{
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++c1;
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},
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[&c2]( info<1> const & i1, info<2> const & i2, info<4> const & i4 )
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{
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BOOST_TEST(i1.value==1);
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BOOST_TEST(i2.value==2);
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BOOST_TEST(i4.value==4);
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++c2;
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}
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);
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BOOST_TEST(c1==0);
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BOOST_TEST(c2==1);
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}
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throw my_error();
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}
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void test( std::function<void()> const & f )
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{
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thrower = f;
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leaf::expect<info<2>,info<3>,info<4>> exp;
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try
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{
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f4();
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BOOST_TEST(false);
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}
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catch( my_error const & e )
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{
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BOOST_TEST(!leaf::peek<info<2>>(exp,e));
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BOOST_TEST(!leaf::peek<info<3>>(exp,e));
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BOOST_TEST(!leaf::peek<info<4>>(exp,e));
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BOOST_TEST(leaf::leaf_detail::tl_slot_ptr<info<1>>()==0);
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BOOST_TEST(leaf::leaf_detail::tl_slot_ptr<info<2>>()!=0);
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BOOST_TEST(leaf::leaf_detail::tl_slot_ptr<info<3>>()!=0);
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BOOST_TEST(leaf::leaf_detail::tl_slot_ptr<info<4>>()!=0);
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}
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}
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int main()
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{
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test( [ ]
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{
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throw leaf::exception( my_error(), info<1>{1} );
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} );
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test( [ ]
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{
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LEAF_THROW( my_error(), info<1>{1} );
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} );
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test( [ ]
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{
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auto propagate = leaf::defer( [ ] { return info<1>{1}; } );
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throw my_error();
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} );
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return boost::report_errors();
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}
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