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/* -*- 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 INCLUDED_COMPHELPER_UNWRAPARGS_HXX
#define INCLUDED_COMPHELPER_UNWRAPARGS_HXX
#include <rtl/ustrbuf.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/XInterface.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <cppu/unotype.hxx>
#include <boost/optional.hpp>
namespace comphelper {
/// @internal
namespace detail {
inline void unwrapArgsError(
const OUString& str, sal_Int32 nArg,
const css::uno::Reference< css::uno::XInterface >& xErrorContext =
css::uno::Reference< css::uno::XInterface >() )
{
throw css::lang::IllegalArgumentException(
str, xErrorContext, static_cast< sal_Int16 >( nArg ) );
}
template< typename T, typename... Args >
inline void unwrapArgsError( const OUString& str, sal_Int32 nArg, T&, Args&... args )
{
return unwrapArgsError( str, nArg, args... );
}
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >&,
sal_Int32,
const css::uno::Reference< css::uno::XInterface >& )
{
return;
}
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >&,
sal_Int32 )
{
return;
}
template< typename T, typename... Args >
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >& seq,
sal_Int32 nArg, ::boost::optional< T >& v, Args&... args );
template< typename T, typename... Args >
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >& seq,
sal_Int32 nArg, T& v, Args&... args )
{
if( seq.getLength() <= nArg )
{
return unwrapArgsError( OUString( "No such argument available!"),
nArg, args... );
}
if( ! ( seq[nArg] >>= v ) )
{
OUStringBuffer buf;
buf.append( "Cannot extract ANY { " );
buf.append( seq[nArg].getValueType().getTypeName() );
buf.append( " } to " );
buf.append( ::cppu::UnoType<T>::get().getTypeName() );
buf.append( static_cast<sal_Unicode>('!') );
return unwrapArgsError( buf.makeStringAndClear(), nArg, args... );
}
return unwrapArgs( seq, ++nArg, args... );
}
template< typename T, typename... Args >
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >& seq,
sal_Int32 nArg, ::boost::optional< T >& v, Args&... args )
{
if( nArg < seq.getLength() )
{
T t;
unwrapArgs( seq, nArg, t, args... );
v = t;
} else {
unwrapArgs( seq, ++nArg, args... );
}
}
}
template< typename... Args >
inline void unwrapArgs(
const css::uno::Sequence< css::uno::Any >& seq,
Args&... args )
{
return detail::unwrapArgs( seq, 0, args... );
}
} // namespace comphelper
#endif // ! defined( INCLUDED_COMPHELPER_UNWRAPARGS_HXX)
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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