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/*************************************************************************
* 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.
*
************************************************************************/
#ifndef COMPHELPER_ANYCOMPARE_HXX
#define COMPHELPER_ANYCOMPARE_HXX
#include "comphelper/comphelperdllapi.h"
/** === begin UNO includes === **/
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/i18n/XCollator.hpp>
/** === end UNO includes === **/
#include <comphelper/extract.hxx>
#include <functional>
#include <memory>
//......................................................................................................................
namespace comphelper
{
//......................................................................................................................
//==================================================================================================================
//= IKeyPredicateLess
//==================================================================================================================
class SAL_NO_VTABLE IKeyPredicateLess
{
public:
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const = 0;
virtual ~IKeyPredicateLess() {}
};
//==================================================================================================================
//= LessPredicateAdapter
//==================================================================================================================
struct LessPredicateAdapter : public ::std::binary_function< ::com::sun::star::uno::Any, ::com::sun::star::uno::Any, bool >
{
LessPredicateAdapter( const IKeyPredicateLess& _predicate )
:m_predicate( _predicate )
{
}
bool operator()( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
return m_predicate.isLess( _lhs, _rhs );
}
private:
IKeyPredicateLess const & m_predicate;
private:
LessPredicateAdapter(); // never implemented
};
//==================================================================================================================
//= ScalarPredicateLess
//==================================================================================================================
template< typename SCALAR >
class ScalarPredicateLess : public IKeyPredicateLess
{
public:
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
SCALAR lhs(0), rhs(0);
if ( !( _lhs >>= lhs )
|| !( _rhs >>= rhs )
)
throw ::com::sun::star::lang::IllegalArgumentException();
return lhs < rhs;
}
};
//==================================================================================================================
//= StringPredicateLess
//==================================================================================================================
class StringPredicateLess : public IKeyPredicateLess
{
public:
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
::rtl::OUString lhs, rhs;
if ( !( _lhs >>= lhs )
|| !( _rhs >>= rhs )
)
throw ::com::sun::star::lang::IllegalArgumentException();
return lhs < rhs;
}
};
//==================================================================================================================
//= StringCollationPredicateLess
//==================================================================================================================
class StringCollationPredicateLess : public IKeyPredicateLess
{
public:
StringCollationPredicateLess( ::com::sun::star::uno::Reference< ::com::sun::star::i18n::XCollator > const & i_collator )
:m_collator( i_collator )
{
}
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
::rtl::OUString lhs, rhs;
if ( !( _lhs >>= lhs )
|| !( _rhs >>= rhs )
)
throw ::com::sun::star::lang::IllegalArgumentException();
return m_collator->compareString( lhs, rhs ) < 0;
}
private:
::com::sun::star::uno::Reference< ::com::sun::star::i18n::XCollator > const m_collator;
};
//==================================================================================================================
//= TypePredicateLess
//==================================================================================================================
class TypePredicateLess : public IKeyPredicateLess
{
public:
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
::com::sun::star::uno::Type lhs, rhs;
if ( !( _lhs >>= lhs )
|| !( _rhs >>= rhs )
)
throw ::com::sun::star::lang::IllegalArgumentException();
return lhs.getTypeName() < rhs.getTypeName();
}
};
//==================================================================================================================
//= EnumPredicateLess
//==================================================================================================================
class EnumPredicateLess : public IKeyPredicateLess
{
public:
EnumPredicateLess( ::com::sun::star::uno::Type const & _enumType )
:m_enumType( _enumType )
{
}
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
sal_Int32 lhs(0), rhs(0);
if ( !::cppu::enum2int( lhs, _lhs )
|| !::cppu::enum2int( rhs, _rhs )
|| !_lhs.getValueType().equals( m_enumType )
|| !_rhs.getValueType().equals( m_enumType )
)
throw ::com::sun::star::lang::IllegalArgumentException();
return lhs < rhs;
}
private:
::com::sun::star::uno::Type const m_enumType;
};
//==================================================================================================================
//= InterfacePredicateLess
//==================================================================================================================
class InterfacePredicateLess : public IKeyPredicateLess
{
public:
virtual bool isLess( ::com::sun::star::uno::Any const & _lhs, ::com::sun::star::uno::Any const & _rhs ) const
{
if ( ( _lhs.getValueTypeClass() != ::com::sun::star::uno::TypeClass_INTERFACE )
|| ( _rhs.getValueTypeClass() != ::com::sun::star::uno::TypeClass_INTERFACE )
)
throw ::com::sun::star::lang::IllegalArgumentException();
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > lhs( _lhs, ::com::sun::star::uno::UNO_QUERY );
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > rhs( _rhs, ::com::sun::star::uno::UNO_QUERY );
return lhs.get() < rhs.get();
}
};
//==================================================================================================================
//= getStandardLessPredicate
//==================================================================================================================
/** creates a default IKeyPredicateLess instance for the given UNO type
@param i_type
the type for which a predicate instance should be created
@param i_collator
specifies a collator instance to use, or <NULL/>. If <NULL/>, strings will be compared using the <code><</code>
operator, otherwise the collator will be used. The parameter is ignored if <arg>i_type</arg> does not specify
the string type.
@return
a default implementation of IKeyPredicateLess, which is able to compare values of the given type. If no
such default implementation is known for the given type, then <NULL/> is returned.
*/
::std::auto_ptr< IKeyPredicateLess > COMPHELPER_DLLPUBLIC
getStandardLessPredicate(
::com::sun::star::uno::Type const & i_type,
::com::sun::star::uno::Reference< ::com::sun::star::i18n::XCollator > const & i_collator
);
//......................................................................................................................
} // namespace comphelper
//......................................................................................................................
#endif // COMPHELPER_ANYCOMPARE_HXX
|
