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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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#ifndef _STDCPP_SUPPORT_H_
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#define _STDCPP_SUPPORT_H_
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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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/* 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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/* 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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/* 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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Use this macro as a C++ statement to translate a User::Leave
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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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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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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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