[857] | 1 | #ifndef BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP_
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| 2 | #define BOOST_DETAIL_NO_EXCEPTIONS_SUPPORT_HPP_
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| 3 |
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| 4 | #if (defined _MSC_VER) && (_MSC_VER >= 1200)
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| 5 | # pragma once
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| 6 | #endif
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| 7 |
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| 8 | //----------------------------------------------------------------------
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| 9 | // (C) Copyright 2004 Pavel Vozenilek.
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| 10 | // Use, modification and distribution is subject to the Boost Software
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| 11 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt
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| 12 | // or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 13 | //
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| 14 | //
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| 15 | // This file contains helper macros used when exception support may be
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| 16 | // disabled (as indicated by macro BOOST_NO_EXCEPTIONS).
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| 17 | //
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| 18 | // Before picking up these macros you may consider using RAII techniques
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| 19 | // to deal with exceptions - their syntax can be always the same with
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| 20 | // or without exception support enabled.
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| 21 | //
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| 22 |
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| 23 | /* Example of use:
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| 24 |
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| 25 | void foo() {
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| 26 | BOOST_TRY {
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| 27 | ...
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| 28 | } BOOST_CATCH(const std::bad_alloc&) {
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| 29 | ...
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| 30 | BOOST_RETHROW
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| 31 | } BOOST_CATCH(const std::exception& e) {
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| 32 | ...
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| 33 | }
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| 34 | BOOST_CATCH_END
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| 35 | }
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| 36 |
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| 37 | With exception support enabled it will expand into:
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| 38 |
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| 39 | void foo() {
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| 40 | { try {
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| 41 | ...
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| 42 | } catch (const std::bad_alloc&) {
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| 43 | ...
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| 44 | throw;
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| 45 | } catch (const std::exception& e) {
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| 46 | ...
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| 47 | }
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| 48 | }
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| 49 | }
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| 50 |
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| 51 | With exception support disabled it will expand into:
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| 52 |
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| 53 | void foo() {
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| 54 | { if(true) {
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| 55 | ...
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| 56 | } else if (false) {
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| 57 | ...
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| 58 | } else if (false) {
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| 59 | ...
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| 60 | }
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| 61 | }
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| 62 | }
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| 63 | */
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| 64 | //----------------------------------------------------------------------
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| 65 |
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| 66 | #include <boost/config.hpp>
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| 67 | #include <boost/detail/workaround.hpp>
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| 68 |
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| 69 | #if !(defined BOOST_NO_EXCEPTIONS)
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| 70 | # define BOOST_TRY { try
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| 71 | # define BOOST_CATCH(x) catch(x)
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| 72 | # define BOOST_RETHROW throw;
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| 73 | # define BOOST_CATCH_END }
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| 74 | #else
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| 75 | # if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
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| 76 | # define BOOST_TRY { if ("")
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| 77 | # define BOOST_CATCH(x) else if (!"")
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| 78 | # else
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| 79 | # define BOOST_TRY { if (true)
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| 80 | # define BOOST_CATCH(x) else if (false)
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| 81 | # endif
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| 82 | # define BOOST_RETHROW
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| 83 | # define BOOST_CATCH_END }
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| 84 | #endif
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| 85 |
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| 86 |
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| 87 | #endif
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