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Diffstat (limited to 'comphelper/inc/comphelper/unwrapargs.hxx')
| -rw-r--r-- | comphelper/inc/comphelper/unwrapargs.hxx | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/comphelper/inc/comphelper/unwrapargs.hxx b/comphelper/inc/comphelper/unwrapargs.hxx new file mode 100644 index 000000000000..652187f9139f --- /dev/null +++ b/comphelper/inc/comphelper/unwrapargs.hxx @@ -0,0 +1,150 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#if ! defined(COMPHELPER_UNWRAPARGS_HXX_INCLUDED) +#define COMPHELPER_UNWRAPARGS_HXX_INCLUDED + +#if ! defined(_RTL_USTRBUF_HXX_) +#include "rtl/ustrbuf.hxx" +#endif +#include "com/sun/star/uno/Sequence.hxx" +#if ! defined(_COM_SUN_STAR_LANG_ILLEGALARGUMENTEXCEPTION_HPP_) +#include "com/sun/star/lang/IllegalArgumentException.hpp" +#endif +#include "boost/optional.hpp" +#include "boost/preprocessor/cat.hpp" +#include "boost/preprocessor/repetition.hpp" +#include "boost/preprocessor/arithmetic/add.hpp" +#include "cppu/unotype.hxx" + +namespace comphelper { + +// +// generating helper functions to unwrap the service's argument sequence: +// + +/// @internal +namespace detail { + +template <typename T> +inline void extract( + ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any> const& seq, + sal_Int32 nArg, T & v, + ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> + const& xErrorContext ) +{ + if (nArg >= seq.getLength()) { + throw ::com::sun::star::lang::IllegalArgumentException( + ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( + "No such argument available!") ), + xErrorContext, static_cast<sal_Int16>(nArg) ); + } + if (! (seq[nArg] >>= v)) { + ::rtl::OUStringBuffer buf; + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("Cannot extract ANY { ") ); + buf.append( seq[nArg].getValueType().getTypeName() ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(" } to ") ); + buf.append( ::cppu::UnoType<T>::get().getTypeName() ); + buf.append( static_cast<sal_Unicode>('!') ); + throw ::com::sun::star::lang::IllegalArgumentException( + buf.makeStringAndClear(), xErrorContext, + static_cast<sal_Int16>(nArg) ); + } +} + +template <typename T> +inline void extract( + ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any> const& seq, + sal_Int32 nArg, ::boost::optional<T> & v, + ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface> + const& xErrorContext ) +{ + if (nArg < seq.getLength()) { + T t; + extract( seq, nArg, t, xErrorContext ); + v.reset( t ); + } +} + +} // namespace detail + +#define COMPHELPER_UNWRAPARGS_extract(z_, n_, unused_) \ + detail::extract( seq, n_, BOOST_PP_CAT(v, n_), xErrorContext ); +#define COMPHELPER_UNWRAPARGS_args(z_, n_, unused_) \ + BOOST_PP_CAT(T, n_) & BOOST_PP_CAT(v, n_) + +/** The following preprocessor repetitions generate functions like + + <pre> + template <typename T0, typename T1, ...> + inline void unwrapArgs( + uno::Sequence<uno::Any> const& seq, + T0 & v0, T1 & v1, ..., + css::uno::Reference<css::uno::XInterface> const& xErrorContext = + css::uno::Reference<css::uno::XInterface>() ); + </pre> + (full namespace qualification ::com::sun::star has been omitted + for brevity) + + which unwraps the passed sequence's elements, assigning them to the + referenced values. Specify optional arguments as boost::optional<T>. + If the length of the sequence is greater than the count of arguments, + then the latter sequence elements are ignored. + If too few arguments are given in the sequence and a missing argument is + no boost::optional<T>, then an lang::IllegalArgumentException is thrown + with the specified xErrorContext (defaults to null-ref). + + The maximum number of service declarations can be set by defining + COMPHELPER_UNWRAPARGS_MAX_ARGS; its default is 12. +*/ +#define COMPHELPER_UNWRAPARGS_make(z_, n_, unused_) \ +template < BOOST_PP_ENUM_PARAMS( BOOST_PP_ADD(n_, 1), typename T) > \ +inline void unwrapArgs( \ + ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any > const& seq, \ + BOOST_PP_ENUM(BOOST_PP_ADD(n_, 1), COMPHELPER_UNWRAPARGS_args, ~), \ + ::com::sun::star::uno::Reference< \ + ::com::sun::star::uno::XInterface> const& xErrorContext = \ + ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface>() ) \ +{ \ + BOOST_PP_REPEAT(BOOST_PP_ADD(n_, 1), COMPHELPER_UNWRAPARGS_extract, ~) \ +} + +#if ! defined(COMPHELPER_UNWRAPARGS_MAX_ARGS) +#define COMPHELPER_UNWRAPARGS_MAX_ARGS 12 +#endif + +BOOST_PP_REPEAT(COMPHELPER_UNWRAPARGS_MAX_ARGS, COMPHELPER_UNWRAPARGS_make, ~) + +#undef COMPHELPER_UNWRAPARGS_MAX_ARGS +#undef COMPHELPER_UNWRAPARGS_make +#undef COMPHELPER_UNWRAPARGS_args +#undef COMPHELPER_UNWRAPARGS_extract + +} // namespace comphelper + +#endif // ! defined(COMPHELPER_UNWRAPARGS_HXX_INCLUDED) + |