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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