diff options
Diffstat (limited to 'include/comphelper/extract.hxx')
-rw-r--r-- | include/comphelper/extract.hxx | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/include/comphelper/extract.hxx b/include/comphelper/extract.hxx new file mode 100644 index 000000000000..30cbaaefc6c9 --- /dev/null +++ b/include/comphelper/extract.hxx @@ -0,0 +1,158 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef _COMPHELPER_EXTRACT_HXX_ +#define _COMPHELPER_EXTRACT_HXX_ + +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/uno/XInterface.hpp> +#include <com/sun/star/uno/TypeClass.hpp> +#include <com/sun/star/uno/Type.hxx> +#include <com/sun/star/uno/Any.hxx> +#include "cppu/unotype.hxx" + +namespace cppu +{ + +/** + * Sets enum from int32 value. This function does NOT check for valid enum values! + *<BR> + * @param nEnum int32 enum value + * @param rType enum type + * @return enum or emoty any. + */ +inline ::com::sun::star::uno::Any SAL_CALL int2enum( + sal_Int32 nEnum, const ::com::sun::star::uno::Type & rType ) +{ + if (rType.getTypeClass() == ::com::sun::star::uno::TypeClass_ENUM) + { + int nVal = nEnum; + return ::com::sun::star::uno::Any( &nVal, rType ); + } + return ::com::sun::star::uno::Any(); +} + +/** + * Sets int32 from enum or int in any. + *<BR> + * @param rnEnum [out] int32 enum value + * @param rAny enum or int + * @param sal_True if enum or int value was set else sal_False. + */ +inline sal_Bool SAL_CALL enum2int( sal_Int32 & rnEnum, const ::com::sun::star::uno::Any & rAny ) +{ + if (rAny.getValueTypeClass() == ::com::sun::star::uno::TypeClass_ENUM) + { + rnEnum = * reinterpret_cast< const int * >( rAny.getValue() ); + return sal_True; + } + + return rAny >>= rnEnum; +} + +/** + * Sets int32 from enum or int in any with additional typecheck + * <BR> + * @param rAny enum or int + * @param eRet the enum value as int. If there is not enum of the given type or + * a ::com::sun::star::lang::IllegalArgumentException is thrown + */ +template< typename E > +inline void SAL_CALL any2enum( E & eRet, const ::com::sun::star::uno::Any & rAny ) + throw( ::com::sun::star::lang::IllegalArgumentException ) +{ + // check for type save enum + if (! (rAny >>= eRet)) + { + // if not enum, maybe integer? + sal_Int32 nValue = 0; + if (! (rAny >>= nValue)) + throw ::com::sun::star::lang::IllegalArgumentException(); + + eRet = (E)nValue; + } +} + +/** + * Template function to create an uno::Any from an enum + * + * @DEPRECATED : use makeAny< E >() + * + */ +template< typename E > +inline ::com::sun::star::uno::Any SAL_CALL enum2any( E eEnum ) +{ + return ::com::sun::star::uno::Any( &eEnum, ::cppu::UnoType< E >::get() ); +} + +/** + * Extracts interface from an any. If given any does not hold the demanded interface, + * it will be queried for it. + * If no interface is available, the out ref will be cleared. + *<BR> + * @param rxOut [out] demanded interface + * @param rAny interface + * @return sal_True if any reference (including the null ref) was retrieved from any else sal_False. + */ +template< class T > +inline sal_Bool SAL_CALL extractInterface( + ::com::sun::star::uno::Reference< T > & rxOut, + const ::com::sun::star::uno::Any & rAny ) +{ + rxOut.clear(); + return (rAny >>= rxOut); +} + +/** + * extracts a boolean either as a sal_Bool or an integer from + * an any. If there is no sal_Bool or integer inside the any + * a ::com::sun::star::lang::IllegalArgumentException is thrown + * + */ +inline sal_Bool SAL_CALL any2bool( const ::com::sun::star::uno::Any & rAny ) + throw( ::com::sun::star::lang::IllegalArgumentException ) +{ + if (rAny.getValueTypeClass() == ::com::sun::star::uno::TypeClass_BOOLEAN) + { + return *(sal_Bool *)rAny.getValue(); + } + else + { + sal_Int32 nValue = 0; + if (! (rAny >>= nValue)) + throw ::com::sun::star::lang::IllegalArgumentException(); + return nValue != 0; + } +} + +/** + * Puts a boolean in an any. + * + * @DEPRECATED : use makeAny< sal_Bool >() + * + */ +inline ::com::sun::star::uno::Any SAL_CALL bool2any( sal_Bool bBool ) +{ + return ::com::sun::star::uno::Any( &bBool, ::getCppuBooleanType() ); +} + +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |