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Diffstat (limited to 'cppuhelper/source/implbase_ex.cxx')
| -rw-r--r-- | cppuhelper/source/implbase_ex.cxx | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/cppuhelper/source/implbase_ex.cxx b/cppuhelper/source/implbase_ex.cxx new file mode 100644 index 000000000000..6d89bca96d6e --- /dev/null +++ b/cppuhelper/source/implbase_ex.cxx @@ -0,0 +1,469 @@ +/************************************************************************* + * + * 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. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_cppuhelper.hxx" +#include <sal/alloca.h> + +#include <string.h> +#include <osl/diagnose.h> +#include <rtl/byteseq.hxx> +#include <rtl/ustrbuf.hxx> +#include <rtl/uuid.h> +#include <cppuhelper/compbase_ex.hxx> + +#include "com/sun/star/uno/RuntimeException.hpp" + +using namespace ::cppu; +using namespace ::osl; +using namespace ::rtl; +using namespace ::com::sun::star; +using namespace ::com::sun::star::uno; + +namespace cppu +{ + +/** Shared mutex for implementation helper initialization. + Not for public use. +*/ +::osl::Mutex & SAL_CALL getImplHelperInitMutex(void) SAL_THROW( () ); + +//-------------------------------------------------------------------------------------------------- +static inline void checkInterface( Type const & rType ) + SAL_THROW( (RuntimeException) ) +{ + if (TypeClass_INTERFACE != rType.getTypeClass()) + { + OUStringBuffer buf( 64 ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("querying for interface \"") ); + buf.append( rType.getTypeName() ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\": no interface type!") ); + OUString msg( buf.makeStringAndClear() ); +#if OSL_DEBUG_LEVEL > 0 + OString str( OUStringToOString( msg, RTL_TEXTENCODING_ASCII_US ) ); + OSL_ENSURE( 0, str.getStr() ); +#endif + throw RuntimeException( msg, Reference< XInterface >() ); + } +} +//-------------------------------------------------------------------------------------------------- +static inline bool isXInterface( rtl_uString * pStr ) SAL_THROW( () ) +{ + return (((OUString const *)&pStr)->equalsAsciiL( RTL_CONSTASCII_STRINGPARAM("com.sun.star.uno.XInterface") ) != sal_False); +} +//-------------------------------------------------------------------------------------------------- +static inline void * makeInterface( sal_IntPtr nOffset, void * that ) SAL_THROW( () ) +{ + return (((char *)that) + nOffset); +} +//-------------------------------------------------------------------------------------------------- +static inline bool __td_equals( + typelib_TypeDescriptionReference const * pTDR1, + typelib_TypeDescriptionReference const * pTDR2 ) + SAL_THROW( () ) +{ + return ((pTDR1 == pTDR2) || + ((OUString const *)&pTDR1->pTypeName)->equals( *(OUString const *)&pTDR2->pTypeName ) != sal_False); +} +//-------------------------------------------------------------------------------------------------- +static inline type_entry * __getTypeEntries( class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + type_entry * pEntries = cd->m_typeEntries; + if (! cd->m_storedTypeRefs) // not inited? + { + MutexGuard guard( getImplHelperInitMutex() ); + if (! cd->m_storedTypeRefs) // not inited? + { + // get all types + for ( sal_Int32 n = cd->m_nTypes; n--; ) + { + type_entry * pEntry = &pEntries[ n ]; + Type const & rType = (*pEntry->m_type.getCppuType)( 0 ); + OSL_ENSURE( rType.getTypeClass() == TypeClass_INTERFACE, "### wrong helper init: expected interface!" ); + OSL_ENSURE( ! isXInterface( rType.getTypeLibType()->pTypeName ), "### want to implement XInterface: template argument is XInterface?!?!?!" ); + if (rType.getTypeClass() != TypeClass_INTERFACE) + { + OUStringBuffer buf( 48 ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("type \"") ); + buf.append( rType.getTypeName() ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\" is no interface type!") ); + OUString msg( buf.makeStringAndClear() ); +#if OSL_DEBUG_LEVEL > 0 + OString str( OUStringToOString( msg, RTL_TEXTENCODING_ASCII_US ) ); + OSL_ENSURE( 0, str.getStr() ); +#endif + throw RuntimeException( msg, Reference< XInterface >() ); + } + // ref is statically held by getCppuType() + pEntry->m_type.typeRef = rType.getTypeLibType(); + } + cd->m_storedTypeRefs = sal_True; + } + } + return pEntries; +} +//-------------------------------------------------------------------------------------------------- +static inline void __fillTypes( Type * types, class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + type_entry * pEntries = __getTypeEntries( cd ); + for ( sal_Int32 n = cd->m_nTypes; n--; ) + { + types[ n ] = pEntries[ n ].m_type.typeRef; + } +} +//-------------------------------------------------------------------------------------------------- +namespace { + +bool recursivelyFindType( + typelib_TypeDescriptionReference const * demandedType, + typelib_InterfaceTypeDescription const * type, sal_IntPtr * offset) +{ + // This code assumes that the vtables of a multiple-inheritance class (the + // offset amount by which to adjust the this pointer) follow one another in + // the object layout, and that they contain slots for the inherited classes + // in a specifc order. In theory, that need not hold for any given + // platform; in practice, it seems to work well on all supported platforms: + next: + for (sal_Int32 i = 0; i < type->nBaseTypes; ++i) { + if (i > 0) { + *offset += sizeof (void *); + } + typelib_InterfaceTypeDescription const * base = type->ppBaseTypes[i]; + // ignore XInterface: + if (base->nBaseTypes > 0) { + if (__td_equals( + reinterpret_cast< + typelib_TypeDescriptionReference const * >(base), + demandedType)) + { + return true; + } + // Profiling showed that it is important to speed up the common case + // of only one base: + if (type->nBaseTypes == 1) { + type = base; + goto next; + } + if (recursivelyFindType(demandedType, base, offset)) { + return true; + } + } + } + return false; +} + +} + +static inline void * __queryDeepNoXInterface( + typelib_TypeDescriptionReference * pDemandedTDR, class_data * cd, void * that ) + SAL_THROW( (RuntimeException) ) +{ + type_entry * pEntries = __getTypeEntries( cd ); + sal_Int32 nTypes = cd->m_nTypes; + sal_Int32 n; + + // try top interfaces without getting td + for ( n = 0; n < nTypes; ++n ) + { + if (__td_equals( pEntries[ n ].m_type.typeRef, pDemandedTDR )) + { + return makeInterface( pEntries[ n ].m_offset, that ); + } + } + // query deep getting td + for ( n = 0; n < nTypes; ++n ) + { + typelib_TypeDescription * pTD = 0; + TYPELIB_DANGER_GET( &pTD, pEntries[ n ].m_type.typeRef ); + if (pTD) + { + // exclude top (already tested) and bottom (XInterface) interface + OSL_ENSURE( + reinterpret_cast< typelib_InterfaceTypeDescription * >(pTD)-> + nBaseTypes > 0, + "### want to implement XInterface:" + " template argument is XInterface?!?!?!" ); + sal_IntPtr offset = pEntries[n].m_offset; + bool found = recursivelyFindType( + pDemandedTDR, + reinterpret_cast< typelib_InterfaceTypeDescription * >(pTD), + &offset); + TYPELIB_DANGER_RELEASE( pTD ); + if (found) { + return makeInterface( offset, that ); + } + } + else + { + OUStringBuffer buf( 64 ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("cannot get type description for type \"") ); + buf.append( pEntries[ n ].m_type.typeRef->pTypeName ); + buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\"!") ); + OUString msg( buf.makeStringAndClear() ); +#if OSL_DEBUG_LEVEL > 0 + OString str( OUStringToOString( msg, RTL_TEXTENCODING_ASCII_US ) ); + OSL_ENSURE( 0, str.getStr() ); +#endif + throw RuntimeException( msg, Reference< XInterface >() ); + } + } + return 0; +} + +// ImplHelper +//================================================================================================== +Any SAL_CALL ImplHelper_query( + Type const & rType, class_data * cd, void * that ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + void * p; + // shortcut for XInterface + if (isXInterface( pTDR->pTypeName )) + { + // take first one + p = makeInterface( cd->m_typeEntries[ 0 ].m_offset, that ); + } + else + { + p = __queryDeepNoXInterface( pTDR, cd, that ); + if (! p) + { + return Any(); + } + } + return Any( &p, pTDR ); +} +//================================================================================================== +Any SAL_CALL ImplHelper_queryNoXInterface( + Type const & rType, class_data * cd, void * that ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + void * p = __queryDeepNoXInterface( pTDR, cd, that ); + if (p) + { + return Any( &p, pTDR ); + } + else + { + return Any(); + } +} +//================================================================================================== +Sequence< sal_Int8 > SAL_CALL ImplHelper_getImplementationId( class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + if (! cd->m_createdId) + { + sal_uInt8 * id = (sal_uInt8 *)alloca( 16 ); + ::rtl_createUuid( (sal_uInt8 *)id, 0, sal_True ); + + MutexGuard guard( getImplHelperInitMutex() ); + if (! cd->m_createdId) + { + memcpy( cd->m_id, id, 16 ); + cd->m_createdId = sal_True; + } + } + + sal_Sequence * seq = 0; + ::rtl_byte_sequence_constructFromArray( &seq, cd->m_id, 16 ); + return Sequence< sal_Int8 >( seq, SAL_NO_ACQUIRE ); +} +//================================================================================================== +Sequence< Type > SAL_CALL ImplHelper_getTypes( + class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + Sequence< Type > types( cd->m_nTypes ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + return types; +} +//================================================================================================== +Sequence< Type > SAL_CALL ImplInhHelper_getTypes( + class_data * cd, Sequence< Type > const & rAddTypes ) + SAL_THROW( (RuntimeException) ) +{ + sal_Int32 nImplTypes = cd->m_nTypes; + sal_Int32 nAddTypes = rAddTypes.getLength(); + Sequence< Type > types( nImplTypes + nAddTypes ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + // append base types + Type const * pAddTypes = rAddTypes.getConstArray(); + while (nAddTypes--) + { + pTypes[ nImplTypes + nAddTypes ] = pAddTypes[ nAddTypes ]; + } + return types; +} + +// WeakImplHelper +//================================================================================================== +Any SAL_CALL WeakImplHelper_query( + Type const & rType, class_data * cd, void * that, OWeakObject * pBase ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + // shortcut XInterface to OWeakObject + if (! isXInterface( pTDR->pTypeName )) + { + void * p = __queryDeepNoXInterface( pTDR, cd, that ); + if (p) + { + return Any( &p, pTDR ); + } + } + return pBase->OWeakObject::queryInterface( rType ); +} +//================================================================================================== +Sequence< Type > SAL_CALL WeakImplHelper_getTypes( + class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + sal_Int32 nTypes = cd->m_nTypes; + Sequence< Type > types( nTypes +1 ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + pTypes[ nTypes ] = ::getCppuType( (Reference< XWeak > const *)0 ); + return types; +} + +// WeakAggImplHelper +//================================================================================================== +Any SAL_CALL WeakAggImplHelper_queryAgg( + Type const & rType, class_data * cd, void * that, OWeakAggObject * pBase ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + // shortcut XInterface to OWeakAggObject + if (! isXInterface( pTDR->pTypeName )) + { + void * p = __queryDeepNoXInterface( pTDR, cd, that ); + if (p) + { + return Any( &p, pTDR ); + } + } + return pBase->OWeakAggObject::queryAggregation( rType ); +} +//================================================================================================== +Sequence< Type > SAL_CALL WeakAggImplHelper_getTypes( + class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + sal_Int32 nTypes = cd->m_nTypes; + Sequence< Type > types( nTypes +2 ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + pTypes[ nTypes++ ] = ::getCppuType( (Reference< XWeak > const *)0 ); + pTypes[ nTypes ] = ::getCppuType( (const Reference< XAggregation > *)0 ); + return types; +} + +// WeakComponentImplHelper +//================================================================================================== +Any SAL_CALL WeakComponentImplHelper_query( + Type const & rType, class_data * cd, void * that, WeakComponentImplHelperBase * pBase ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + // shortcut XInterface to WeakComponentImplHelperBase + if (! isXInterface( pTDR->pTypeName )) + { + void * p = __queryDeepNoXInterface( pTDR, cd, that ); + if (p) + { + return Any( &p, pTDR ); + } + } + return pBase->WeakComponentImplHelperBase::queryInterface( rType ); +} +//================================================================================================== +Sequence< Type > SAL_CALL WeakComponentImplHelper_getTypes( + class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + sal_Int32 nTypes = cd->m_nTypes; + Sequence< Type > types( nTypes +2 ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + pTypes[ nTypes++ ] = ::getCppuType( (Reference< XWeak > const *)0 ); + pTypes[ nTypes ] = ::getCppuType( (Reference< lang::XComponent > const *)0 ); + return types; +} + +// WeakAggComponentImplHelper +//================================================================================================== +Any SAL_CALL WeakAggComponentImplHelper_queryAgg( + Type const & rType, class_data * cd, void * that, WeakAggComponentImplHelperBase * pBase ) + SAL_THROW( (RuntimeException) ) +{ + checkInterface( rType ); + typelib_TypeDescriptionReference * pTDR = rType.getTypeLibType(); + + // shortcut XInterface to WeakAggComponentImplHelperBase + if (! isXInterface( pTDR->pTypeName )) + { + void * p = __queryDeepNoXInterface( pTDR, cd, that ); + if (p) + { + return Any( &p, pTDR ); + } + } + return pBase->WeakAggComponentImplHelperBase::queryAggregation( rType ); +} +//================================================================================================== +Sequence< Type > SAL_CALL WeakAggComponentImplHelper_getTypes( + class_data * cd ) + SAL_THROW( (RuntimeException) ) +{ + sal_Int32 nTypes = cd->m_nTypes; + Sequence< Type > types( nTypes +3 ); + Type * pTypes = types.getArray(); + __fillTypes( pTypes, cd ); + pTypes[ nTypes++ ] = ::getCppuType( (Reference< XWeak > const *)0 ); + pTypes[ nTypes++ ] = ::getCppuType( (const Reference< XAggregation > *)0 ); + pTypes[ nTypes ] = ::getCppuType( (const Reference< lang::XComponent > *)0 ); + return types; +} + +} |