| /************************************************************** |
| * |
| * 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_bridges.hxx" |
| |
| #include "bridges/cpp_uno/shared/vtables.hxx" |
| |
| #include "osl/diagnose.h" |
| #include "sal/types.h" |
| #include "typelib/typedescription.h" |
| |
| #include <algorithm> |
| |
| namespace |
| { |
| |
| /** |
| * Calculates the number of vtables associated with an interface type. |
| * |
| * <p>Multiple-inheritance C++ classes have more than one vtable.</p> |
| * |
| * @param type a non-null pointer to an interface type description |
| * @return the number of vtables associated with the given interface type |
| */ |
| sal_Int32 getVtableCount(typelib_InterfaceTypeDescription const * type) { |
| sal_Int32 n = 0; |
| for (sal_Int32 i = 0; i < type->nBaseTypes; ++i) { |
| n += getVtableCount(type->ppBaseTypes[i]); |
| } |
| return std::max< sal_Int32 >(n, 1); |
| } |
| |
| /** |
| * Maps a local member index to a local function index. |
| * |
| * <p><em>Local</em> members/functions are those not inherited from any base |
| * types. The number of <em>functions</em> is potentially larger than the |
| * number of <em>members</em>, as each read–write attribute member counts |
| * as two functions.</p> |
| * |
| * @param type a non-null pointer to an interface type description |
| * @param localMember a local member index, relative to the given interface type |
| * @return the local function index corresponding to the given local member |
| * index, relative to the given interface type |
| */ |
| sal_Int32 mapLocalMemberToLocalFunction( |
| typelib_InterfaceTypeDescription * type, sal_Int32 localMember) |
| { |
| typelib_typedescription_complete( |
| reinterpret_cast< typelib_TypeDescription ** >(&type)); |
| sal_Int32 localMemberOffset = type->nAllMembers - type->nMembers; |
| sal_Int32 localFunctionOffset = type->nMapFunctionIndexToMemberIndex |
| - bridges::cpp_uno::shared::getLocalFunctions(type); |
| return type->pMapMemberIndexToFunctionIndex[localMemberOffset + localMember] |
| - localFunctionOffset; |
| } |
| |
| // Since on Solaris we compile with --instances=static, getVtableSlot cannot be |
| // a template function, with explicit instantiates for |
| // T = typelib_InterfaceAttributeTypeDescription and |
| // T = typelib_InterfaceMethodTypeDescription in this file; hence, there are two |
| // overloaded versions of getVtableSlot that both delegate to this template |
| // function: |
| template< typename T > bridges::cpp_uno::shared::VtableSlot doGetVtableSlot( |
| T const * ifcMember) |
| { |
| bridges::cpp_uno::shared::VtableSlot slot; |
| slot.offset = 0; |
| T * member = const_cast< T * >(ifcMember); |
| while (member->pBaseRef != 0) { |
| OSL_ASSERT(member->nIndex < member->pInterface->nBaseTypes); |
| for (sal_Int32 i = 0; i < member->nIndex; ++i) { |
| slot.offset += getVtableCount(member->pInterface->ppBaseTypes[i]); |
| } |
| typelib_TypeDescription * desc = 0; |
| typelib_typedescriptionreference_getDescription( |
| &desc, member->pBaseRef); |
| OSL_ASSERT( |
| desc != 0 && desc->eTypeClass == member->aBase.aBase.eTypeClass); |
| if (member != ifcMember) { |
| typelib_typedescription_release(&member->aBase.aBase); |
| } |
| member = reinterpret_cast< T * >(desc); |
| } |
| slot.index |
| = bridges::cpp_uno::shared::getPrimaryFunctions( |
| member->pInterface->pBaseTypeDescription) |
| + mapLocalMemberToLocalFunction(member->pInterface, member->nIndex); |
| if (member != ifcMember) { |
| typelib_typedescription_release(&member->aBase.aBase); |
| } |
| return slot; |
| } |
| |
| } |
| |
| namespace bridges { namespace cpp_uno { namespace shared { |
| |
| sal_Int32 getLocalFunctions(typelib_InterfaceTypeDescription const * type) { |
| return type->nMembers == 0 |
| ? 0 |
| : (type->nMapFunctionIndexToMemberIndex |
| - type->pMapMemberIndexToFunctionIndex[ |
| type->nAllMembers - type->nMembers]); |
| } |
| |
| sal_Int32 getPrimaryFunctions(typelib_InterfaceTypeDescription * type) { |
| sal_Int32 n = 0; |
| for (; type != 0; type = type->pBaseTypeDescription) { |
| typelib_typedescription_complete( |
| reinterpret_cast< typelib_TypeDescription ** >(&type)); |
| n += getLocalFunctions(type); |
| } |
| return n; |
| } |
| |
| VtableSlot getVtableSlot( |
| typelib_InterfaceAttributeTypeDescription const * ifcMember) |
| { |
| return doGetVtableSlot(ifcMember); |
| } |
| |
| VtableSlot getVtableSlot( |
| typelib_InterfaceMethodTypeDescription const * ifcMember) |
| { |
| return doGetVtableSlot(ifcMember); |
| } |
| |
| } } } |