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Issue 5743529531801600: Playing with Default behavior for catch-all blocks
Patch Set: proposed changes Created March 31, 2015, 1:49 p.m.
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1 /*
2 * This file is part of Adblock Plus <https://adblockplus.org/>,
3 * Copyright (C) 2006-2015 Eyeo GmbH
4 *
5 * Adblock Plus is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 3 as
7 * published by the Free Software Foundation.
8 *
9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 /** \file Exception.h -- Default behavior for catch-all exception handlers.
19 */
20
21 template<typename SubHandlers>
22 struct CatchAllVoid
23 {
24 template<typename UserData>
25 static void Handler(UserData userData)
26 {
27 try
28 {
29 std::rethrow_exception(std::current_exception());
30 }
31 catch (const std::system_error& ex)
32 {
33 SubHandlers::Exception(ex, userData);
34 }
35 catch (const std::runtime_error& ex)
36 {
37 SubHandlers::Exception(ex, userData);
38 }
39 catch (const std::logic_error& ex)
40 {
41 SubHandlers::Exception(ex, userData);
42 }
43 catch (const std::exception& ex)
44 {
45 SubHandlers::Exception(ex, userData);
46 }
47 catch (...)
48 {
49 SubHandlers::Unknown(userData);
50 }
51 }
52 };
53
54 template<typename SubHandlers, typename ReturnType = typename SubHandlers::Retur nType>
55 struct CatchAllReturn
56 {
57 template<typename UserData>
58 static ReturnType Handler(UserData userData)
59 {
60 try
61 {
62 std::rethrow_exception(std::current_exception());
63 // Apparently VS 2012 does not realize that this function always throws.
64 // Unless we have an explicit return statement, we get a spurious warning C4715 "not all control paths return a value".
65 return ReturnType();
66 }
67 catch (const std::system_error& ex)
68 {
69 return SubHandlers::Exception(ex, userData);
70 }
71 catch (const std::runtime_error& ex)
72 {
73 return SubHandlers::Exception(ex, userData);
74 }
75 catch (const std::logic_error& ex)
76 {
77 return SubHandlers::Exception(ex, userData);
78 }
79 catch (const std::exception& ex)
80 {
81 return SubHandlers::Exception(ex, userData);
82 }
83 catch (...)
84 {
85 return SubHandlers::Unknown(userData);
86 }
87 }
88 };
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