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20effc67 TL |
1 | // Copyright (c) 2018-2020 Emil Dotchevski and Reverge Studios, Inc. |
2 | ||
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #include <boost/leaf/on_error.hpp> | |
7 | #include <boost/leaf/handle_errors.hpp> | |
8 | #include <boost/leaf/result.hpp> | |
9 | #include "lightweight_test.hpp" | |
10 | ||
11 | namespace leaf = boost::leaf; | |
12 | ||
13 | template <int> | |
14 | struct info | |
15 | { | |
16 | int value; | |
17 | }; | |
18 | ||
19 | leaf::error_id f0() | |
20 | { | |
21 | auto load = leaf::on_error(info<0>{}); | |
22 | return leaf::new_error( info<2>{2} ); | |
23 | } | |
24 | ||
25 | leaf::error_id f1() | |
26 | { | |
27 | auto load = leaf::on_error( info<0>{-1}, info<1>{1}, info<2>{-1} ); | |
28 | return f0(); | |
29 | } | |
30 | ||
31 | leaf::error_id f2() | |
32 | { | |
33 | return f1().load( info<3>{3} ); | |
34 | } | |
35 | ||
36 | int main() | |
37 | { | |
38 | int r = leaf::try_handle_all( | |
39 | []() -> leaf::result<int> | |
40 | { | |
41 | return f2(); | |
42 | }, | |
43 | []( info<0> i0, info<1> i1, info<2> i2, info<3> i3 ) | |
44 | { | |
45 | BOOST_TEST_EQ(i0.value, 0); | |
46 | BOOST_TEST_EQ(i1.value, 1); | |
47 | BOOST_TEST_EQ(i2.value, 2); | |
48 | BOOST_TEST_EQ(i3.value, 3); | |
49 | return 1; | |
50 | }, | |
51 | [] | |
52 | { | |
53 | return 2; | |
54 | } ); | |
55 | BOOST_TEST_EQ(r, 1); | |
56 | ||
57 | return boost::report_errors(); | |
58 | } |