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Diffstat (limited to 'comphelper/inc/comphelper/anycompare.hxx')
| -rwxr-xr-x | comphelper/inc/comphelper/anycompare.hxx | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/comphelper/inc/comphelper/anycompare.hxx b/comphelper/inc/comphelper/anycompare.hxx new file mode 100755 index 000000000000..03f41e108ba9 --- /dev/null +++ b/comphelper/inc/comphelper/anycompare.hxx @@ -0,0 +1,226 @@ +/************************************************************************* + * 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 |