LibreOffice Module bridges (master)  1
vtables.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3  * This file is part of the LibreOffice project.
4  *
5  * This Source Code Form is subject to the terms of the Mozilla Public
6  * License, v. 2.0. If a copy of the MPL was not distributed with this
7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8  *
9  * This file incorporates work covered by the following license notice:
10  *
11  * Licensed to the Apache Software Foundation (ASF) under one or more
12  * contributor license agreements. See the NOTICE file distributed
13  * with this work for additional information regarding copyright
14  * ownership. The ASF licenses this file to you under the Apache
15  * License, Version 2.0 (the "License"); you may not use this file
16  * except in compliance with the License. You may obtain a copy of
17  * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18  */
19 
20 
21 #include <vtables.hxx>
22 
23 #include <sal/types.h>
24 #include <typelib/typedescription.h>
25 
26 #include <algorithm>
27 #include <cassert>
28 
29 namespace
30 {
31 
40 sal_Int32 getVtableCount(typelib_InterfaceTypeDescription const * type) {
41  sal_Int32 n = 0;
42  for (sal_Int32 i = 0; i < type->nBaseTypes; ++i) {
43  n += getVtableCount(type->ppBaseTypes[i]);
44  }
45  return std::max< sal_Int32 >(n, 1);
46 }
47 
61 sal_Int32 mapLocalMemberToLocalFunction(
62  typelib_InterfaceTypeDescription * type, sal_Int32 localMember)
63 {
65  reinterpret_cast< typelib_TypeDescription ** >(&type));
66  sal_Int32 localMemberOffset = type->nAllMembers - type->nMembers;
67  sal_Int32 localFunctionOffset = type->nMapFunctionIndexToMemberIndex
69  return type->pMapMemberIndexToFunctionIndex[localMemberOffset + localMember]
70  - localFunctionOffset;
71 }
72 
73 // Since on Solaris we compile with --instances=static, getVtableSlot cannot be
74 // a template function, with explicit instantiates for
75 // T = typelib_InterfaceAttributeTypeDescription and
76 // T = typelib_InterfaceMethodTypeDescription in this file; hence, there are two
77 // overloaded versions of getVtableSlot that both delegate to this template
78 // function:
79 template< typename T > bridges::cpp_uno::shared::VtableSlot doGetVtableSlot(
80  T const * ifcMember)
81 {
83  slot.offset = 0;
84  T * member = const_cast< T * >(ifcMember);
85  while (member->pBaseRef != 0) {
86  assert(member->nIndex < member->pInterface->nBaseTypes);
87  for (sal_Int32 i = 0; i < member->nIndex; ++i) {
88  slot.offset += getVtableCount(member->pInterface->ppBaseTypes[i]);
89  }
90  typelib_TypeDescription * desc = nullptr;
92  &desc, member->pBaseRef);
93  assert(
94  desc != nullptr && desc->eTypeClass == member->aBase.aBase.eTypeClass);
95  if (member != ifcMember) {
96  typelib_typedescription_release(&member->aBase.aBase);
97  }
98  member = reinterpret_cast< T * >(desc);
99  }
100  slot.index
102  member->pInterface->pBaseTypeDescription)
103  + mapLocalMemberToLocalFunction(member->pInterface, member->nIndex);
104  if (member != ifcMember) {
105  typelib_typedescription_release(&member->aBase.aBase);
106  }
107  return slot;
108 }
109 
110 }
111 
112 namespace bridges::cpp_uno::shared {
113 
114 sal_Int32 getLocalFunctions(typelib_InterfaceTypeDescription const * type) {
115  return type->nMembers == 0
116  ? 0
117  : (type->nMapFunctionIndexToMemberIndex
118  - type->pMapMemberIndexToFunctionIndex[
119  type->nAllMembers - type->nMembers]);
120 }
121 
122 sal_Int32 getPrimaryFunctions(typelib_InterfaceTypeDescription * type) {
123  sal_Int32 n = 0;
124  for (; type != nullptr; type = type->pBaseTypeDescription) {
126  reinterpret_cast< typelib_TypeDescription ** >(&type));
127  n += getLocalFunctions(type);
128  }
129  return n;
130 }
131 
133  typelib_InterfaceAttributeTypeDescription const * ifcMember)
134 {
135  return doGetVtableSlot(ifcMember);
136 }
137 
139  typelib_InterfaceMethodTypeDescription const * ifcMember)
140 {
141  return doGetVtableSlot(ifcMember);
142 }
143 
144 }
145 
146 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
void SAL_CALL typelib_typedescriptionreference_getDescription(typelib_TypeDescription **ppRet, typelib_TypeDescriptionReference *pRef) SAL_THROW_EXTERN_C()
sal_Int32 getPrimaryFunctions(typelib_InterfaceTypeDescription *type)
Calculate the number of primary functions of an interface type.
Definition: vtables.cxx:122
Represents a vtable slot of a C++ class.
Definition: vtables.hxx:59
sal_Int64 n
sal_Int32 index
The index within the vtable.
Definition: vtables.hxx:76
const BorderLinePrimitive2D *pCandidateB assert(pCandidateA)
sal_Bool SAL_CALL typelib_typedescription_complete(typelib_TypeDescription **ppTypeDescr) SAL_THROW_EXTERN_C()
sal_Int32 offset
The offset of the vtable.
Definition: vtables.hxx:68
int i
sal_Int32 getLocalFunctions(typelib_InterfaceTypeDescription const *type)
Calculate the number of local functions of an interface type.
Definition: vtables.cxx:114
struct _typelib_TypeDescription typelib_TypeDescription
Definition: msvc/except.hxx:52
VtableSlot getVtableSlot(typelib_InterfaceAttributeTypeDescription const *ifcMember)
Calculates the vtable slot associated with an interface attribute member.
Definition: vtables.cxx:132
void SAL_CALL typelib_typedescription_release(typelib_TypeDescription *pTD) SAL_THROW_EXTERN_C()