711 lines
23 KiB
C++
711 lines
23 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <comphelper/anytostring.hxx>
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#include <comphelper/anycompare.hxx>
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#include <comphelper/componentbase.hxx>
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#include <com/sun/star/container/XEnumerableMap.hpp>
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#include <com/sun/star/lang/NoSupportException.hpp>
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#include <com/sun/star/lang/XInitialization.hpp>
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#include <com/sun/star/ucb/AlreadyInitializedException.hpp>
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#include <com/sun/star/beans/IllegalTypeException.hpp>
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#include <com/sun/star/beans/Pair.hpp>
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#include <com/sun/star/lang/XServiceInfo.hpp>
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#include <com/sun/star/uno/XComponentContext.hpp>
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#include <cppuhelper/compbase.hxx>
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#include <cppuhelper/implbase.hxx>
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#include <cppuhelper/supportsservice.hxx>
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#include <typelib/typedescription.hxx>
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#include <cmath>
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#include <map>
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#include <memory>
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#include <optional>
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#include <utility>
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namespace comphelper
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{
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using ::com::sun::star::uno::Reference;
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using ::com::sun::star::uno::XInterface;
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using ::com::sun::star::uno::UNO_QUERY;
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using ::com::sun::star::uno::RuntimeException;
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using ::com::sun::star::uno::Any;
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using ::com::sun::star::uno::Sequence;
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using ::com::sun::star::uno::Type;
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using ::com::sun::star::container::XEnumerableMap;
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using ::com::sun::star::lang::NoSupportException;
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using ::com::sun::star::beans::IllegalTypeException;
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using ::com::sun::star::container::NoSuchElementException;
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using ::com::sun::star::lang::IllegalArgumentException;
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using ::com::sun::star::lang::XInitialization;
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using ::com::sun::star::ucb::AlreadyInitializedException;
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using ::com::sun::star::beans::Pair;
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using ::com::sun::star::uno::TypeClass;
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using ::com::sun::star::uno::TypeClass_VOID;
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using ::com::sun::star::uno::TypeClass_UNKNOWN;
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using ::com::sun::star::uno::TypeClass_ANY;
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using ::com::sun::star::uno::TypeClass_EXCEPTION;
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using ::com::sun::star::uno::TypeClass_STRUCT;
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using ::com::sun::star::uno::TypeClass_FLOAT;
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using ::com::sun::star::uno::TypeClass_DOUBLE;
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using ::com::sun::star::uno::TypeClass_INTERFACE;
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using ::com::sun::star::lang::XServiceInfo;
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using ::com::sun::star::uno::XComponentContext;
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using ::com::sun::star::container::XEnumeration;
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using ::com::sun::star::uno::TypeDescription;
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using ::com::sun::star::lang::DisposedException;
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namespace {
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class MapEnumerator;
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}
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typedef std::map< Any, Any, LessPredicateAdapter > KeyedValues;
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namespace {
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struct MapData
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{
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Type m_aKeyType;
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Type m_aValueType;
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std::optional< KeyedValues > m_pValues;
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std::shared_ptr< IKeyPredicateLess > m_pKeyCompare;
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bool m_bMutable;
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std::vector< MapEnumerator* > m_aModListeners;
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MapData()
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:m_bMutable( true )
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{
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}
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MapData( const MapData& _source )
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:m_aKeyType( _source.m_aKeyType )
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,m_aValueType( _source.m_aValueType )
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,m_pKeyCompare( _source.m_pKeyCompare )
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,m_bMutable( false )
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{
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m_pValues.emplace( *_source.m_pValues );
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}
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private:
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MapData& operator=( const MapData& _source ) = delete;
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};
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}
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static void lcl_registerMapModificationListener( MapData& _mapData, MapEnumerator& _listener )
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{
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#if OSL_DEBUG_LEVEL > 0
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for ( const MapEnumerator* lookup : _mapData.m_aModListeners )
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{
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OSL_ENSURE( lookup != &_listener, "lcl_registerMapModificationListener: this listener is already registered!" );
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}
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#endif
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_mapData.m_aModListeners.push_back( &_listener );
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}
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static void lcl_revokeMapModificationListener( MapData& _mapData, MapEnumerator& _listener )
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{
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auto lookup = std::find(_mapData.m_aModListeners.begin(), _mapData.m_aModListeners.end(), &_listener);
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if (lookup != _mapData.m_aModListeners.end())
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{
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_mapData.m_aModListeners.erase( lookup );
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return;
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}
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OSL_FAIL( "lcl_revokeMapModificationListener: the listener is not registered!" );
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}
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static void lcl_notifyMapDataListeners_nothrow( const MapData& _mapData );
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// EnumerableMap
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typedef ::cppu::WeakComponentImplHelper < XInitialization
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, XEnumerableMap
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, XServiceInfo
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> Map_IFace;
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namespace {
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class EnumerableMap: public Map_IFace, public ComponentBase
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{
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public:
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EnumerableMap();
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protected:
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virtual ~EnumerableMap() override;
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// XInitialization
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virtual void SAL_CALL initialize( const Sequence< Any >& aArguments ) override;
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// XEnumerableMap
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virtual css::uno::Reference< css::container::XEnumeration > SAL_CALL createKeyEnumeration( sal_Bool Isolated ) override;
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virtual css::uno::Reference< css::container::XEnumeration > SAL_CALL createValueEnumeration( sal_Bool Isolated ) override;
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virtual css::uno::Reference< css::container::XEnumeration > SAL_CALL createElementEnumeration( sal_Bool Isolated ) override;
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// XMap
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virtual Type SAL_CALL getKeyType() override;
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virtual Type SAL_CALL getValueType() override;
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virtual void SAL_CALL clear( ) override;
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virtual sal_Bool SAL_CALL containsKey( const Any& _key ) override;
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virtual sal_Bool SAL_CALL containsValue( const Any& _value ) override;
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virtual Any SAL_CALL get( const Any& _key ) override;
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virtual Any SAL_CALL put( const Any& _key, const Any& _value ) override;
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virtual Any SAL_CALL remove( const Any& _key ) override;
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// XElementAccess (base of XMap)
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virtual Type SAL_CALL getElementType() override;
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virtual sal_Bool SAL_CALL hasElements() override;
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// XServiceInfo
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virtual OUString SAL_CALL getImplementationName( ) override;
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virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
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virtual Sequence< OUString > SAL_CALL getSupportedServiceNames( ) override;
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private:
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void impl_initValues_throw( const Sequence< Pair< Any, Any > >& _initialValues );
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/// throws an IllegalTypeException if the given value is not compatible with our ValueType
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void impl_checkValue_throw( const Any& _value ) const;
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void impl_checkKey_throw( const Any& _key ) const;
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void impl_checkNaN_throw( const Any& _keyOrValue, const Type& _keyOrValueType ) const;
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void impl_checkMutable_throw() const;
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private:
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::osl::Mutex m_aMutex;
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MapData m_aData;
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};
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enum EnumerationType
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{
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eKeys, eValues, eBoth
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};
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class MapEnumerator final
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{
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public:
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MapEnumerator( ::cppu::OWeakObject& _rParent, MapData& _mapData, const EnumerationType _type )
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:m_rParent( _rParent )
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,m_rMapData( _mapData )
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,m_eType( _type )
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,m_mapPos( _mapData.m_pValues->begin() )
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,m_disposed( false )
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{
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lcl_registerMapModificationListener( m_rMapData, *this );
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}
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~MapEnumerator()
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{
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dispose();
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}
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void dispose()
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{
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if ( !m_disposed )
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{
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lcl_revokeMapModificationListener( m_rMapData, *this );
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m_disposed = true;
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}
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}
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// noncopyable
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MapEnumerator(const MapEnumerator&) = delete;
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const MapEnumerator& operator=(const MapEnumerator&) = delete;
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// XEnumeration equivalents
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bool hasMoreElements();
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Any nextElement();
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/// called when the map was modified
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void mapModified();
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private:
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::cppu::OWeakObject& m_rParent;
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MapData& m_rMapData;
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const EnumerationType m_eType;
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KeyedValues::const_iterator m_mapPos;
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bool m_disposed;
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};
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}
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static void lcl_notifyMapDataListeners_nothrow( const MapData& _mapData )
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{
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for ( MapEnumerator* loop : _mapData.m_aModListeners )
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{
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loop->mapModified();
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}
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}
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typedef ::cppu::WeakImplHelper < XEnumeration
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> MapEnumeration_Base;
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namespace {
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class MapEnumeration :public ComponentBase
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,public MapEnumeration_Base
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{
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public:
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MapEnumeration( ::cppu::OWeakObject& _parentMap, MapData& _mapData, ::cppu::OBroadcastHelper& _rBHelper,
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const EnumerationType _type, const bool _isolated )
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:ComponentBase( _rBHelper, ComponentBase::NoInitializationNeeded() )
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,m_xKeepMapAlive( _parentMap )
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,m_pMapDataCopy( _isolated ? new MapData( _mapData ) : nullptr )
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,m_aEnumerator( *this, _isolated ? *m_pMapDataCopy : _mapData, _type )
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{
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}
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// XEnumeration
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virtual sal_Bool SAL_CALL hasMoreElements( ) override;
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virtual Any SAL_CALL nextElement( ) override;
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protected:
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virtual ~MapEnumeration() override
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{
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acquire();
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{
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::osl::MutexGuard aGuard( getMutex() );
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m_aEnumerator.dispose();
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m_pMapDataCopy.reset();
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}
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}
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private:
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// since we share our mutex with the main map, we need to keep it alive as long as we live
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Reference< XInterface > m_xKeepMapAlive;
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std::unique_ptr< MapData > m_pMapDataCopy;
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MapEnumerator m_aEnumerator;
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};
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}
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EnumerableMap::EnumerableMap()
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:Map_IFace( m_aMutex )
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,ComponentBase( Map_IFace::rBHelper )
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{
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}
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EnumerableMap::~EnumerableMap()
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{
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if ( !impl_isDisposed() )
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{
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acquire();
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dispose();
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}
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}
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void SAL_CALL EnumerableMap::initialize( const Sequence< Any >& _arguments )
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{
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ComponentMethodGuard aGuard( *this, ComponentMethodGuard::MethodType::WithoutInit );
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if ( impl_isInitialized_nothrow() )
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throw AlreadyInitializedException();
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sal_Int32 nArgumentCount = _arguments.getLength();
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if ( ( nArgumentCount != 2 ) && ( nArgumentCount != 3 ) )
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throw IllegalArgumentException(u"wrong number of args"_ustr, static_cast<cppu::OWeakObject*>(this), 1);
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Type aKeyType, aValueType;
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if ( !( _arguments[0] >>= aKeyType ) )
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throw IllegalArgumentException(u"com.sun.star.uno.Type expected."_ustr, *this, 1 );
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if ( !( _arguments[1] >>= aValueType ) )
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throw IllegalArgumentException(u"com.sun.star.uno.Type expected."_ustr, *this, 2 );
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Sequence< Pair< Any, Any > > aInitialValues;
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bool bMutable = true;
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if ( nArgumentCount == 3 )
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{
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if ( !( _arguments[2] >>= aInitialValues ) )
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throw IllegalArgumentException(u"[]com.sun.star.beans.Pair<any,any> expected."_ustr, *this, 2 );
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bMutable = false;
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}
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// for the value, anything is allowed, except VOID
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if ( ( aValueType.getTypeClass() == TypeClass_VOID ) || ( aValueType.getTypeClass() == TypeClass_UNKNOWN ) )
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throw IllegalTypeException(u"Unsupported value type."_ustr, *this );
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// create the comparator for the KeyType, and throw if the type is not supported
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std::unique_ptr< IKeyPredicateLess > pComparator( getStandardLessPredicate( aKeyType, nullptr ) );
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if (!pComparator)
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throw IllegalTypeException(u"Unsupported key type."_ustr, *this );
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// init members
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m_aData.m_aKeyType = std::move(aKeyType);
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m_aData.m_aValueType = std::move(aValueType);
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m_aData.m_pKeyCompare = std::move(pComparator);
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m_aData.m_pValues.emplace( *m_aData.m_pKeyCompare );
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m_aData.m_bMutable = bMutable;
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if ( aInitialValues.hasElements() )
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impl_initValues_throw( aInitialValues );
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setInitialized();
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}
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void EnumerableMap::impl_initValues_throw( const Sequence< Pair< Any, Any > >& _initialValues )
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{
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OSL_PRECOND( m_aData.m_pValues && m_aData.m_pValues->empty(), "EnumerableMap::impl_initValues_throw: illegal call!" );
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if (!m_aData.m_pValues || !m_aData.m_pValues->empty()){
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throw RuntimeException("EnumerableMap m_aData container is invalid or not empty.", *this);
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}
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for (auto& mapping : _initialValues)
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{
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impl_checkValue_throw(mapping.Second);
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(*m_aData.m_pValues)[mapping.First] = mapping.Second;
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}
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}
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void EnumerableMap::impl_checkValue_throw( const Any& _value ) const
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{
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if ( !_value.hasValue() )
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// nothing to do, NULL values are always allowed, regardless of the ValueType
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return;
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TypeClass eAllowedTypeClass = m_aData.m_aValueType.getTypeClass();
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bool bValid = false;
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switch ( eAllowedTypeClass )
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{
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default:
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bValid = ( _value.getValueTypeClass() == eAllowedTypeClass );
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break;
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case TypeClass_ANY:
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bValid = true;
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break;
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case TypeClass_INTERFACE:
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{
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// special treatment: _value might contain the proper type, but the interface
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// might actually be NULL. Which is still valid ...
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if ( m_aData.m_aValueType.isAssignableFrom( _value.getValueType() ) )
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// this also catches the special case where XFoo is our value type,
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// and _value contains a NULL-reference to XFoo, or a derived type
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bValid = true;
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else
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{
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Reference< XInterface > xValue( _value, UNO_QUERY );
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if ( xValue.is() )
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// XInterface is not-NULL, but is X(ValueType) not-NULL, too?
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xValue.set( xValue->queryInterface( m_aData.m_aValueType ), UNO_QUERY );
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bValid = xValue.is();
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}
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}
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break;
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case TypeClass_EXCEPTION:
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case TypeClass_STRUCT:
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{
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// values are accepted if and only if their type equals, or is derived from, our value type
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if ( _value.getValueTypeClass() != eAllowedTypeClass )
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bValid = false;
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else
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{
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const TypeDescription aValueTypeDesc( _value.getValueType() );
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const TypeDescription aRequiredTypeDesc( m_aData.m_aValueType );
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const _typelib_CompoundTypeDescription* pValueCompoundTypeDesc =
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reinterpret_cast< const _typelib_CompoundTypeDescription* >( aValueTypeDesc.get() );
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while ( pValueCompoundTypeDesc )
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{
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if ( typelib_typedescription_equals( &pValueCompoundTypeDesc->aBase, aRequiredTypeDesc.get() ) )
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break;
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pValueCompoundTypeDesc = pValueCompoundTypeDesc->pBaseTypeDescription;
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}
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bValid = ( pValueCompoundTypeDesc != nullptr );
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}
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}
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break;
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}
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if ( !bValid )
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{
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throw IllegalTypeException(
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"Incompatible value type. Found '" + _value.getValueTypeName()
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+ "', where '" + m_aData.m_aValueType.getTypeName()
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+ "' (or compatible type) is expected.",
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*const_cast< EnumerableMap* >( this ) );
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}
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impl_checkNaN_throw( _value, m_aData.m_aValueType );
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}
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void EnumerableMap::impl_checkNaN_throw( const Any& _keyOrValue, const Type& _keyOrValueType ) const
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{
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if ( ( _keyOrValueType.getTypeClass() == TypeClass_DOUBLE )
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|| ( _keyOrValueType.getTypeClass() == TypeClass_FLOAT )
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)
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{
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double nValue(0);
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if ( _keyOrValue >>= nValue )
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if ( std::isnan( nValue ) )
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throw IllegalArgumentException(
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u"NaN (not-a-number) not supported by this implementation."_ustr,
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*const_cast< EnumerableMap* >( this ), 0 );
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// (note that the case of _key not containing a float/double value is handled in the
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// respective IKeyPredicateLess implementation, so there's no need to handle this here.)
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}
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}
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void EnumerableMap::impl_checkKey_throw( const Any& _key ) const
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{
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if ( !_key.hasValue() )
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throw IllegalArgumentException(
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u"NULL keys not supported by this implementation."_ustr,
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*const_cast< EnumerableMap* >( this ), 0 );
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impl_checkNaN_throw( _key, m_aData.m_aKeyType );
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}
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void EnumerableMap::impl_checkMutable_throw() const
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{
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if ( !m_aData.m_bMutable )
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throw NoSupportException(
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u"The map is immutable."_ustr,
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*const_cast< EnumerableMap* >( this ) );
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}
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Reference< XEnumeration > SAL_CALL EnumerableMap::createKeyEnumeration( sal_Bool Isolated )
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{
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ComponentMethodGuard aGuard( *this );
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return new MapEnumeration( *this, m_aData, getBroadcastHelper(), eKeys, Isolated );
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}
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Reference< XEnumeration > SAL_CALL EnumerableMap::createValueEnumeration( sal_Bool Isolated )
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{
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ComponentMethodGuard aGuard( *this );
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return new MapEnumeration( *this, m_aData, getBroadcastHelper(), eValues, Isolated );
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}
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Reference< XEnumeration > SAL_CALL EnumerableMap::createElementEnumeration( sal_Bool Isolated )
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{
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ComponentMethodGuard aGuard( *this );
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return new MapEnumeration( *this, m_aData, getBroadcastHelper(), eBoth, Isolated );
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}
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Type SAL_CALL EnumerableMap::getKeyType()
|
|
{
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|
ComponentMethodGuard aGuard( *this );
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|
return m_aData.m_aKeyType;
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}
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Type SAL_CALL EnumerableMap::getValueType()
|
|
{
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|
ComponentMethodGuard aGuard( *this );
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|
return m_aData.m_aValueType;
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}
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void SAL_CALL EnumerableMap::clear( )
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|
{
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ComponentMethodGuard aGuard( *this );
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|
impl_checkMutable_throw();
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m_aData.m_pValues->clear();
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lcl_notifyMapDataListeners_nothrow( m_aData );
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}
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sal_Bool SAL_CALL EnumerableMap::containsKey( const Any& _key )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
impl_checkKey_throw( _key );
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|
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|
KeyedValues::const_iterator pos = m_aData.m_pValues->find( _key );
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|
return ( pos != m_aData.m_pValues->end() );
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|
}
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sal_Bool SAL_CALL EnumerableMap::containsValue( const Any& _value )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
impl_checkValue_throw( _value );
|
|
for (auto const& value : *m_aData.m_pValues)
|
|
{
|
|
if ( value.second == _value )
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
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|
|
Any SAL_CALL EnumerableMap::get( const Any& _key )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
impl_checkKey_throw( _key );
|
|
|
|
KeyedValues::const_iterator pos = m_aData.m_pValues->find( _key );
|
|
if ( pos == m_aData.m_pValues->end() )
|
|
throw NoSuchElementException( anyToString( _key ), *this );
|
|
|
|
return pos->second;
|
|
}
|
|
|
|
|
|
Any SAL_CALL EnumerableMap::put( const Any& _key, const Any& _value )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
impl_checkMutable_throw();
|
|
impl_checkKey_throw( _key );
|
|
impl_checkValue_throw( _value );
|
|
|
|
Any previousValue;
|
|
|
|
KeyedValues::iterator pos = m_aData.m_pValues->find( _key );
|
|
if ( pos != m_aData.m_pValues->end() )
|
|
{
|
|
previousValue = pos->second;
|
|
pos->second = _value;
|
|
}
|
|
else
|
|
{
|
|
(*m_aData.m_pValues)[ _key ] = _value;
|
|
}
|
|
|
|
lcl_notifyMapDataListeners_nothrow( m_aData );
|
|
|
|
return previousValue;
|
|
}
|
|
|
|
|
|
Any SAL_CALL EnumerableMap::remove( const Any& _key )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
impl_checkMutable_throw();
|
|
impl_checkKey_throw( _key );
|
|
|
|
Any previousValue;
|
|
|
|
KeyedValues::iterator pos = m_aData.m_pValues->find( _key );
|
|
if ( pos != m_aData.m_pValues->end() )
|
|
{
|
|
previousValue = pos->second;
|
|
m_aData.m_pValues->erase( pos );
|
|
}
|
|
|
|
lcl_notifyMapDataListeners_nothrow( m_aData );
|
|
|
|
return previousValue;
|
|
}
|
|
|
|
|
|
Type SAL_CALL EnumerableMap::getElementType()
|
|
{
|
|
return ::cppu::UnoType< Pair< Any, Any > >::get();
|
|
}
|
|
|
|
|
|
sal_Bool SAL_CALL EnumerableMap::hasElements()
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
return m_aData.m_pValues->empty();
|
|
}
|
|
|
|
|
|
OUString SAL_CALL EnumerableMap::getImplementationName( )
|
|
{
|
|
return u"org.openoffice.comp.comphelper.EnumerableMap"_ustr;
|
|
}
|
|
|
|
sal_Bool SAL_CALL EnumerableMap::supportsService( const OUString& _serviceName )
|
|
{
|
|
return cppu::supportsService(this, _serviceName);
|
|
}
|
|
|
|
|
|
Sequence< OUString > SAL_CALL EnumerableMap::getSupportedServiceNames( )
|
|
{
|
|
return { u"com.sun.star.container.EnumerableMap"_ustr };
|
|
}
|
|
|
|
bool MapEnumerator::hasMoreElements()
|
|
{
|
|
if ( m_disposed )
|
|
throw DisposedException( OUString(), m_rParent );
|
|
return m_mapPos != m_rMapData.m_pValues->end();
|
|
}
|
|
|
|
|
|
Any MapEnumerator::nextElement()
|
|
{
|
|
if ( m_disposed )
|
|
throw DisposedException( OUString(), m_rParent );
|
|
if ( m_mapPos == m_rMapData.m_pValues->end() )
|
|
throw NoSuchElementException(u"No more elements."_ustr, m_rParent );
|
|
|
|
Any aNextElement;
|
|
switch ( m_eType )
|
|
{
|
|
case eKeys: aNextElement = m_mapPos->first; break;
|
|
case eValues: aNextElement = m_mapPos->second; break;
|
|
case eBoth: aNextElement <<= Pair< Any, Any >( m_mapPos->first, m_mapPos->second ); break;
|
|
}
|
|
++m_mapPos;
|
|
return aNextElement;
|
|
}
|
|
|
|
|
|
void MapEnumerator::mapModified()
|
|
{
|
|
m_disposed = true;
|
|
}
|
|
|
|
|
|
sal_Bool SAL_CALL MapEnumeration::hasMoreElements( )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
return m_aEnumerator.hasMoreElements();
|
|
}
|
|
|
|
|
|
Any SAL_CALL MapEnumeration::nextElement( )
|
|
{
|
|
ComponentMethodGuard aGuard( *this );
|
|
return m_aEnumerator.nextElement();
|
|
}
|
|
|
|
|
|
} // namespace comphelper
|
|
|
|
|
|
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
|
|
org_openoffice_comp_comphelper_EnumerableMap(
|
|
css::uno::XComponentContext*, css::uno::Sequence<css::uno::Any> const&)
|
|
{
|
|
return cppu::acquire(new comphelper::EnumerableMap());
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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