author | William Roberts <williamr@symbian.org> |
Wed, 31 Mar 2010 12:33:34 +0100 | |
branch | Symbian3 |
changeset 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* Name : stdcpp_support.h |
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* Part of : standard c++ library. |
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* |
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* |
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*/ |
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|
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|
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#ifndef _STDCPP_SUPPORT_H_ |
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#define _STDCPP_SUPPORT_H_ |
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|
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#include <exception> |
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//This is required for the TRAP macro |
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#include <e32cmn.h> |
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// This is required for the Symbian error numbers |
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#include <e32err.h> |
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|
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/* A utility funtion that takes a SymbianC++ error number and throws a corresponding |
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C++ exception. This mapping is done based on what is mentioned in Chapter 19.1 of |
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the C++ specification and Symbian's e32err.h. |
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*/ |
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IMPORT_C void TranslateSymErrorToCppException(TInt); |
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|
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|
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/* A utility function that takes an instance of std::exception and returns a |
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corresponding SymbianC++ error number. This mapping is done based on what is |
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mentioned in Chapter 19.1 of the C++ specification and Symbian's e32err.h. |
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*/ |
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IMPORT_C TInt TranslateCppExceptionToSymError(const std::exception&); |
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|
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|
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/* Executes the set of C++ statements _s under a trap harness and throws a suitable |
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C++ exception that matches the Symbian error code. |
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|
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Use this macro as a C++ statement to translate a User::Leave |
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|
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_s can consist of multiple C++ statements; in theory, _s can consist |
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of any legal C++ code but in practice, such statements consist of Symbian C++ |
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function calls that may leave, e.g. FooL() or an assignment of some value to |
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the result of a function call, e.g. functionValue=GetFooL(). |
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*/ |
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#define TRANSLATE_SYM_CPP_LEAVES(_s) \ |
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{ \ |
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TInt err; \ |
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TRAP(err, _s); \ |
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if(err) TranslateSymErrorToCppException(err); \ |
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} |
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|
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class Symbian_error : public std::exception |
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{ |
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public: |
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/* A Symbian specific error can be encapsulated within this object*/ |
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Symbian_error(TInt e):error_code(e) {} |
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|
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inline TInt error() { return error_code; } |
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private: |
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TInt error_code; |
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}; |
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#endif //STDCPP_SUPPORT_H |
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