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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Name : stdcpp_support.h |
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16 * Part of : standard c++ library. |
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17 * |
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18 * |
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19 */ |
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20 |
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21 |
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22 |
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23 #ifndef _STDCPP_SUPPORT_H_ |
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24 #define _STDCPP_SUPPORT_H_ |
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25 |
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26 #include <exception> |
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27 //This is required for the TRAP macro |
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28 #include <e32cmn.h> |
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29 // This is required for the Symbian error numbers |
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30 #include <e32err.h> |
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31 |
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32 /* A utility funtion that takes a SymbianC++ error number and throws a corresponding |
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33 C++ exception. This mapping is done based on what is mentioned in Chapter 19.1 of |
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34 the C++ specification and Symbian's e32err.h. |
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35 */ |
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36 IMPORT_C void TranslateSymErrorToCppException(TInt); |
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37 |
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38 |
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39 /* A utility function that takes an instance of std::exception and returns a |
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40 corresponding SymbianC++ error number. This mapping is done based on what is |
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41 mentioned in Chapter 19.1 of the C++ specification and Symbian's e32err.h. |
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42 */ |
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43 IMPORT_C TInt TranslateCppExceptionToSymError(const std::exception&); |
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44 |
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45 |
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46 /* Executes the set of C++ statements _s under a trap harness and throws a suitable |
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47 C++ exception that matches the Symbian error code. |
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48 |
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49 Use this macro as a C++ statement to translate a User::Leave |
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50 |
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51 _s can consist of multiple C++ statements; in theory, _s can consist |
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52 of any legal C++ code but in practice, such statements consist of Symbian C++ |
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53 function calls that may leave, e.g. FooL() or an assignment of some value to |
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54 the result of a function call, e.g. functionValue=GetFooL(). |
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55 */ |
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56 #define TRANSLATE_SYM_CPP_LEAVES(_s) \ |
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57 { \ |
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58 TInt err; \ |
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59 TRAP(err, _s); \ |
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60 if(err) TranslateSymErrorToCppException(err); \ |
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61 } |
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62 |
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63 class Symbian_error : public std::exception |
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64 { |
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65 public: |
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66 /* A Symbian specific error can be encapsulated within this object*/ |
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67 Symbian_error(TInt e):error_code(e) {} |
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68 |
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69 inline TInt error() { return error_code; } |
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70 private: |
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71 TInt error_code; |
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72 }; |
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73 |
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74 |
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75 #endif //STDCPP_SUPPORT_H |
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76 |