| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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 |