Bug Summary

File:home/maarten/src/libreoffice/core/framework/source/uielement/menubarmerger.cxx
Warning:line 342, column 29
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name menubarmerger.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D FWK_DLLIMPLEMENTATION -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/framework/source/inc -I /home/maarten/src/libreoffice/core/framework/inc -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/framework/source/uielement/menubarmerger.cxx

/home/maarten/src/libreoffice/core/framework/source/uielement/menubarmerger.cxx

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#include <uielement/menubarmerger.hxx>
21#include <framework/addonsoptions.hxx>
22#include <com/sun/star/uno/Sequence.hxx>
23
24using namespace ::com::sun::star;
25
26const char SEPARATOR_STRING[] = "private:separator";
27
28const char MERGECOMMAND_ADDAFTER[] = "AddAfter";
29const char MERGECOMMAND_ADDBEFORE[] = "AddBefore";
30const char MERGECOMMAND_REPLACE[] = "Replace";
31const char MERGECOMMAND_REMOVE[] = "Remove";
32
33const char MERGEFALLBACK_ADDPATH[] = "AddPath";
34const char MERGEFALLBACK_IGNORE[] = "Ignore";
35
36namespace framework
37{
38
39/**
40 Check whether a module identifier is part of a context
41 defined by a colon separated list of module identifier.
42
43 @param
44 rContext
45
46 Describes a context string list where all contexts
47 are delimited by a colon. For more information about
48 the module identifier used as context strings see the
49 IDL description of css::frame::XModuleManager
50
51 @param
52 rModuleIdentifier
53
54 A string describing a module identifier. See IDL
55 description of css::frame::XModuleManager.
56
57*/
58bool MenuBarMerger::IsCorrectContext( const OUString& rContext, const OUString& rModuleIdentifier )
59{
60 return ( rContext.isEmpty() || ( rContext.indexOf( rModuleIdentifier ) >= 0 ));
61}
62
63void MenuBarMerger::RetrieveReferencePath(
64 const OUString& rReferencePathString,
65 ::std::vector< OUString >& rReferencePath )
66{
67 const char aDelimiter = '\\';
68
69 rReferencePath.clear();
70 sal_Int32 nIndex( 0 );
71 do
72 {
73 OUString aToken = rReferencePathString.getToken( 0, aDelimiter, nIndex );
74 if ( !aToken.isEmpty() )
75 rReferencePath.push_back( aToken );
76 }
77 while ( nIndex >= 0 );
78}
79
80ReferencePathInfo MenuBarMerger::FindReferencePath(
81 const ::std::vector< OUString >& rReferencePath,
82 Menu* pMenu )
83{
84 sal_uInt32 i( 0 );
85 const sal_uInt32 nCount( rReferencePath.size() );
86
87 ReferencePathInfo aResult;
88 if ( !nCount )
89 {
90 aResult.pPopupMenu = nullptr;
91 aResult.nPos = 0;
92 aResult.nLevel = -1;
93 aResult.eResult = RP_MENUITEM_NOT_FOUND;
94 return aResult;
95 }
96
97 Menu* pCurrMenu( pMenu );
98 RPResultInfo eResult( RP_OK );
99
100 sal_Int32 nLevel( - 1 );
101 sal_uInt16 nPos( MENU_ITEM_NOTFOUND );
102 do
103 {
104 ++nLevel;
105 OUString aCmd( rReferencePath[i] );
106
107 if ( i == nCount-1 )
108 {
109 // Check last reference path element. Must be a leave (menu item).
110 sal_uInt16 nTmpPos = FindMenuItem( aCmd, pCurrMenu );
111 if ( nTmpPos != MENU_ITEM_NOTFOUND )
112 nPos = nTmpPos;
113 eResult = ( nTmpPos != MENU_ITEM_NOTFOUND ) ? RP_OK : RP_MENUITEM_NOT_FOUND;
114 }
115 else
116 {
117 // Check reference path element. Must be a node (popup menu)!
118 sal_uInt16 nTmpPos = FindMenuItem( aCmd, pCurrMenu );
119 if ( nTmpPos != MENU_ITEM_NOTFOUND )
120 {
121 sal_uInt16 nItemId = pCurrMenu->GetItemId( nTmpPos );
122 Menu* pTmpMenu = pCurrMenu->GetPopupMenu( nItemId );
123 if ( pTmpMenu != nullptr )
124 pCurrMenu = pTmpMenu;
125 else
126 {
127 nPos = nTmpPos;
128 eResult = RP_MENUITEM_INSTEAD_OF_POPUPMENU_FOUND;
129 }
130 }
131 else
132 eResult = RP_POPUPMENU_NOT_FOUND;
133 }
134 i++;
135 }
136 while ((i < nCount) && (eResult == RP_OK));
137
138 aResult.pPopupMenu = pCurrMenu;
139 aResult.nPos = nPos;
140 aResult.nLevel = nLevel;
141 aResult.eResult = eResult;
142
143 return aResult;
144}
145
146sal_uInt16 MenuBarMerger::FindMenuItem( const OUString& rCmd, Menu const * pCurrMenu )
147{
148 for ( sal_uInt16 i = 0; i < pCurrMenu->GetItemCount(); i++ )
149 {
150 const sal_uInt16 nItemId = pCurrMenu->GetItemId( i );
151 if ( nItemId > 0 )
152 {
153 if ( rCmd == pCurrMenu->GetItemCommand( nItemId ) )
154 return i;
155 }
156 }
157
158 return MENU_ITEM_NOTFOUND;
159}
160
161bool MenuBarMerger::CreateSubMenu(
162 Menu* pSubMenu,
163 sal_uInt16& nItemId,
164 const OUString& rModuleIdentifier,
165 const AddonMenuContainer& rAddonSubMenu )
166{
167 const sal_uInt32 nSize = rAddonSubMenu.size();
168 for ( sal_uInt32 i = 0; i < nSize; i++ )
169 {
170 const AddonMenuItem& rMenuItem = rAddonSubMenu[i];
171
172 if ( IsCorrectContext( rMenuItem.aContext, rModuleIdentifier ))
173 {
174 if ( rMenuItem.aURL == SEPARATOR_STRING )
175 {
176 pSubMenu->InsertSeparator();
177 }
178 else
179 {
180 pSubMenu->InsertItem(nItemId, rMenuItem.aTitle);
181 pSubMenu->SetItemCommand( nItemId, rMenuItem.aURL );
182 if ( !rMenuItem.aSubMenu.empty() )
183 {
184 VclPtr<PopupMenu> pPopupMenu = VclPtr<PopupMenu>::Create();
185 pSubMenu->SetPopupMenu( nItemId, pPopupMenu );
186 ++nItemId;
187
188 CreateSubMenu( pPopupMenu, nItemId, rModuleIdentifier, rMenuItem.aSubMenu );
189 }
190 else
191 ++nItemId;
192 }
193 }
194 }
195
196 return true;
197}
198
199bool MenuBarMerger::MergeMenuItems(
200 Menu* pMenu,
201 sal_uInt16 nPos,
202 sal_uInt16 nModIndex,
203 sal_uInt16& nItemId,
204 const OUString& rModuleIdentifier,
205 const AddonMenuContainer& rAddonMenuItems )
206{
207 sal_uInt16 nIndex( 0 );
208 const sal_uInt32 nSize = rAddonMenuItems.size();
209 for ( sal_uInt32 i = 0; i < nSize; i++ )
210 {
211 const AddonMenuItem& rMenuItem = rAddonMenuItems[i];
212
213 if ( IsCorrectContext( rMenuItem.aContext, rModuleIdentifier ))
214 {
215 if ( rMenuItem.aURL == SEPARATOR_STRING )
216 {
217 pMenu->InsertSeparator(OString(), nPos+nModIndex+nIndex);
218 }
219 else
220 {
221 pMenu->InsertItem(nItemId, rMenuItem.aTitle, MenuItemBits::NONE, OString(), nPos+nModIndex+nIndex);
222 pMenu->SetItemCommand( nItemId, rMenuItem.aURL );
223 if ( !rMenuItem.aSubMenu.empty() )
224 {
225 VclPtr<PopupMenu> pSubMenu = VclPtr<PopupMenu>::Create();
226 pMenu->SetPopupMenu( nItemId, pSubMenu );
227 ++nItemId;
228
229 CreateSubMenu( pSubMenu, nItemId, rModuleIdentifier, rMenuItem.aSubMenu );
230 }
231 else
232 ++nItemId;
233 }
234 ++nIndex;
235 }
236 }
237
238 return true;
239}
240
241bool MenuBarMerger::ReplaceMenuItem(
242 Menu* pMenu,
243 sal_uInt16 nPos,
244 sal_uInt16& rItemId,
245 const OUString& rModuleIdentifier,
246 const AddonMenuContainer& rAddonMenuItems )
247{
248 // There is no replace available. Therefore we first have to
249 // remove the old menu entry,
250 pMenu->RemoveItem( nPos );
251
252 return MergeMenuItems( pMenu, nPos, 0, rItemId, rModuleIdentifier, rAddonMenuItems );
253}
254
255bool MenuBarMerger::RemoveMenuItems(
256 Menu* pMenu,
257 sal_uInt16 nPos,
258 const OUString& rMergeCommandParameter )
259{
260 const sal_uInt16 nParam( sal_uInt16( rMergeCommandParameter.toInt32() ));
261 sal_uInt16 nCount = std::max( nParam, sal_uInt16(1) );
262
263 sal_uInt16 i = 0;
264 while (( nPos < pMenu->GetItemCount() ) && ( i < nCount ))
265 {
266 pMenu->RemoveItem( nPos );
267 ++i;
268 }
269
270 return true;
271}
272
273bool MenuBarMerger::ProcessMergeOperation(
274 Menu* pMenu,
275 sal_uInt16 nPos,
276 sal_uInt16& nItemId,
277 const OUString& rMergeCommand,
278 const OUString& rMergeCommandParameter,
279 const OUString& rModuleIdentifier,
280 const AddonMenuContainer& rAddonMenuItems )
281{
282 sal_uInt16 nModIndex( 0 );
283
284 if ( rMergeCommand == MERGECOMMAND_ADDBEFORE )
285 {
286 nModIndex = 0;
287 return MergeMenuItems( pMenu, nPos, nModIndex, nItemId, rModuleIdentifier, rAddonMenuItems );
288 }
289 else if ( rMergeCommand == MERGECOMMAND_ADDAFTER )
290 {
291 nModIndex = 1;
292 return MergeMenuItems( pMenu, nPos, nModIndex, nItemId, rModuleIdentifier, rAddonMenuItems );
293 }
294 else if ( rMergeCommand == MERGECOMMAND_REPLACE )
295 {
296 return ReplaceMenuItem( pMenu, nPos, nItemId, rModuleIdentifier, rAddonMenuItems );
297 }
298 else if ( rMergeCommand == MERGECOMMAND_REMOVE )
299 {
300 return RemoveMenuItems( pMenu, nPos, rMergeCommandParameter );
301 }
302
303 return false;
304}
305
306bool MenuBarMerger::ProcessFallbackOperation(
307 const ReferencePathInfo& aRefPathInfo,
308 sal_uInt16& rItemId,
309 const OUString& rMergeCommand,
310 const OUString& rMergeFallback,
311 const ::std::vector< OUString >& rReferencePath,
312 const OUString& rModuleIdentifier,
313 const AddonMenuContainer& rAddonMenuItems )
314{
315 if (( rMergeFallback == MERGEFALLBACK_IGNORE ) ||
1
Taking false branch
316 ( rMergeCommand == MERGECOMMAND_REPLACE ) ||
317 ( rMergeCommand == MERGECOMMAND_REMOVE ) )
318 {
319 return true;
320 }
321 else if ( rMergeFallback == MERGEFALLBACK_ADDPATH )
2
Assuming the condition is true
3
Taking true branch
322 {
323 Menu* pCurrMenu( aRefPathInfo.pPopupMenu );
324 sal_Int32 nLevel( aRefPathInfo.nLevel );
325 const sal_Int32 nSize( rReferencePath.size() );
326 bool bFirstLevel( true );
327
328 while ( nLevel < nSize )
4
Assuming 'nLevel' is < 'nSize'
5
Loop condition is true. Entering loop body
23
Assuming 'nLevel' is < 'nSize'
24
Loop condition is true. Entering loop body
329 {
330 if ( nLevel == nSize-1 )
6
Assuming the condition is false
7
Taking false branch
25
Assuming the condition is true
26
Taking true branch
331 {
332 const sal_uInt32 nCount = rAddonMenuItems.size();
333 for ( sal_uInt32 i = 0; i < nCount; ++i )
27
Assuming 'i' is < 'nCount'
28
Loop condition is true. Entering loop body
334 {
335 const AddonMenuItem& rMenuItem = rAddonMenuItems[i];
336 if ( IsCorrectContext( rMenuItem.aContext, rModuleIdentifier ))
29
Taking true branch
337 {
338 if ( rMenuItem.aURL == SEPARATOR_STRING )
30
Taking false branch
339 pCurrMenu->InsertSeparator();
340 else
341 {
342 pCurrMenu->InsertItem(rItemId, rMenuItem.aTitle);
31
Use of memory after it is freed
343 pCurrMenu->SetItemCommand( rItemId, rMenuItem.aURL );
344 ++rItemId;
345 }
346 }
347 }
348 }
349 else
350 {
351 const OUString aCmd( rReferencePath[nLevel] );
352
353 VclPtr<PopupMenu> pPopupMenu = VclPtr<PopupMenu>::Create();
8
Calling 'VclPtr::Create'
10
Returned allocated memory
354
355 if ( bFirstLevel
10.1
'bFirstLevel' is true
10.1
'bFirstLevel' is true
10.1
'bFirstLevel' is true
10.1
'bFirstLevel' is true
&& ( aRefPathInfo.eResult == RP_MENUITEM_INSTEAD_OF_POPUPMENU_FOUND ))
11
Assuming field 'eResult' is equal to RP_MENUITEM_INSTEAD_OF_POPUPMENU_FOUND
12
Taking true branch
356 {
357 // special case: menu item without popup
358 sal_uInt16 nInsPos = aRefPathInfo.nPos;
359 sal_uInt16 nSetItemId = pCurrMenu->GetItemId( nInsPos );
360 pCurrMenu->SetItemCommand( nSetItemId, aCmd );
361 pCurrMenu->SetPopupMenu( nSetItemId, pPopupMenu );
362 }
363 else
364 {
365 // normal case: insert a new item with popup
366 pCurrMenu->InsertItem(rItemId, OUString());
367 pCurrMenu->SetItemCommand( rItemId, aCmd );
368 pCurrMenu->SetPopupMenu( rItemId, pPopupMenu );
369 }
370
371 pCurrMenu = pPopupMenu;
372 ++rItemId;
373 bFirstLevel = false;
374 }
13
Calling implicit destructor for 'VclPtr<PopupMenu>'
14
Calling '~Reference'
21
Returning from '~Reference'
22
Returning from destructor for 'VclPtr<PopupMenu>'
375 ++nLevel;
376 }
377 return true;
378 }
379
380 return false;
381}
382
383void MenuBarMerger::GetMenuEntry(
384 const uno::Sequence< beans::PropertyValue >& rAddonMenuEntry,
385 AddonMenuItem& rAddonMenuItem )
386{
387 // Reset submenu member
388 rAddonMenuItem.aSubMenu.clear();
389
390 for ( const beans::PropertyValue& rProp : rAddonMenuEntry )
391 {
392 OUString aMenuEntryPropName = rProp.Name;
393 if ( aMenuEntryPropName == ADDONSMENUITEM_STRING_URL"URL" )
394 rProp.Value >>= rAddonMenuItem.aURL;
395 else if ( aMenuEntryPropName == ADDONSMENUITEM_STRING_TITLE"Title" )
396 rProp.Value >>= rAddonMenuItem.aTitle;
397 else if ( aMenuEntryPropName == ADDONSMENUITEM_STRING_SUBMENU"Submenu" )
398 {
399 uno::Sequence< uno::Sequence< beans::PropertyValue > > aSubMenu;
400 rProp.Value >>= aSubMenu;
401 GetSubMenu( aSubMenu, rAddonMenuItem.aSubMenu );
402 }
403 else if ( aMenuEntryPropName == ADDONSMENUITEM_STRING_CONTEXT"Context" )
404 rProp.Value >>= rAddonMenuItem.aContext;
405 }
406}
407
408void MenuBarMerger::GetSubMenu(
409 const uno::Sequence< uno::Sequence< beans::PropertyValue > >& rSubMenuEntries,
410 AddonMenuContainer& rSubMenu )
411{
412 rSubMenu.clear();
413
414 const sal_Int32 nCount = rSubMenuEntries.getLength();
415 rSubMenu.reserve(rSubMenu.size() + nCount);
416 for ( sal_Int32 i = 0; i < nCount; i++ )
417 {
418 const uno::Sequence< beans::PropertyValue >& rMenuEntry = rSubMenuEntries[ i ];
419
420 AddonMenuItem aMenuItem;
421 GetMenuEntry( rMenuEntry, aMenuItem );
422 rSubMenu.push_back( aMenuItem );
423 }
424}
425
426} // namespace framework
427
428/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx

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#ifndef INCLUDED_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX
22
23#include <sal/config.h>
24
25#include <rtl/ref.hxx>
26
27#include <utility>
28#include <type_traits>
29
30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif
35
36class VclReferenceBase;
37
38namespace vcl::detail {
39
40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }
42
43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
44 int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }
46
47} // namespace vcl::detail
48
49/**
50 * A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
51 *
52 * For more details on the design please see vcl/README.lifecycle
53 *
54 * @param reference_type must be a subclass of vcl::Window
55 */
56template <class reference_type>
57class VclPtr
58{
59 static_assert(
60 vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
61 nullptr),
62 "template argument type must be derived from VclReferenceBase");
63
64 ::rtl::Reference<reference_type> m_rInnerRef;
65
66public:
67 /** Constructor...
68 */
69 VclPtr()
70 : m_rInnerRef()
71 {}
72
73 /** Constructor...
74 */
75 VclPtr (reference_type * pBody)
76 : m_rInnerRef(pBody)
77 {}
78
79 /** Constructor... that doesn't take a ref.
80 */
81 VclPtr (reference_type * pBody, __sal_NoAcquire)
82 : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
83 {}
84
85 /** Up-casting conversion constructor: Copies interface reference.
86
87 Does not work for up-casts to ambiguous bases. For the special case of
88 up-casting to Reference< XInterface >, see the corresponding conversion
89 operator.
90
91 @param rRef another reference
92 */
93 template< class derived_type >
94 VclPtr(
95 const VclPtr< derived_type > & rRef,
96 typename std::enable_if<
97 std::is_base_of<reference_type, derived_type>::value, int>::type
98 = 0 )
99 : m_rInnerRef( static_cast<reference_type*>(rRef) )
100 {
101 }
102
103#if defined(DBG_UTIL) && !defined(_WIN32)
104 virtual ~VclPtr()
105 {
106 assert(m_rInnerRef.get() == nullptr || vclmain::isAlive())(static_cast <bool> (m_rInnerRef.get() == nullptr || vclmain
::isAlive()) ? void (0) : __assert_fail ("m_rInnerRef.get() == nullptr || vclmain::isAlive()"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 106, __extension__ __PRETTY_FUNCTION__))
;
107 // We can be one of the intermediate counts, but if we are the last
108 // VclPtr keeping this object alive, then something forgot to call dispose().
109 assert((!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1)(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
110 && "someone forgot to call dispose()")(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
;
111 }
112 VclPtr(VclPtr const &) = default;
113 VclPtr(VclPtr &&) = default;
114 VclPtr & operator =(VclPtr const &) = default;
115 VclPtr & operator =(VclPtr &&) = default;
116#endif
117
118 /**
119 * A construction helper for VclPtr. Since VclPtr types are created
120 * with a reference-count of one - to help fit into the existing
121 * code-flow; this helps us to construct them easily.
122 *
123 * For more details on the design please see vcl/README.lifecycle
124 *
125 * @tparam reference_type must be a subclass of vcl::Window
126 */
127 template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
128 {
129 return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
9
Memory is allocated
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
137 }
138
139 /** Get the body. Can be used instead of operator->().
140 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
141 are the same.
142 */
143 reference_type * get() const
144 {
145 return m_rInnerRef.get();
146 }
147
148 void set(reference_type *pBody)
149 {
150 m_rInnerRef.set(pBody);
151 }
152
153 void reset(reference_type *pBody)
154 {
155 m_rInnerRef.set(pBody);
156 }
157
158 /** Up-casting copy assignment operator.
159
160 Does not work for up-casts to ambiguous bases.
161
162 @param rRef another reference
163 */
164 template<typename derived_type>
165 typename std::enable_if<
166 std::is_base_of<reference_type, derived_type>::value,
167 VclPtr &>::type
168 operator =(VclPtr<derived_type> const & rRef)
169 {
170 m_rInnerRef.set(rRef.get());
171 return *this;
172 }
173
174 VclPtr & operator =(reference_type * pBody)
175 {
176 m_rInnerRef.set(pBody);
177 return *this;
178 }
179
180 operator reference_type * () const
181 {
182 return m_rInnerRef.get();
183 }
184
185 explicit operator bool () const
186 {
187 return m_rInnerRef.get() != nullptr;
188 }
189
190 void clear()
191 {
192 m_rInnerRef.clear();
193 }
194
195 void reset()
196 {
197 m_rInnerRef.clear();
198 }
199
200 void disposeAndClear()
201 {
202 // hold it alive for the lifetime of this method
203 ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
205 if (aTmp.get()) {
206 aTmp->disposeOnce();
207 }
208 }
209
210 /** Needed to place VclPtr's into STL collection.
211 */
212 bool operator< (const VclPtr<reference_type> & handle) const
213 {
214 return (m_rInnerRef < handle.m_rInnerRef);
215 }
216}; // class VclPtr
217
218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
220 return p1.get() == p2.get();
221}
222
223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
225 return p1.get() == p2;
226}
227
228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
229 return p1.get() == p2;
230}
231
232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
234 return p1 == p2.get();
235}
236
237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
238 return p1 == p2.get();
239}
240
241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
243 return !(p1 == p2);
244}
245
246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
248 return !(p1 == p2);
249}
250
251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
252 return !(p1 == p2);
253}
254
255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
257 return !(p1 == p2);
258}
259
260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
261 return !(p1 == p2);
262}
263
264/**
265 * A construction helper for a temporary VclPtr. Since VclPtr types
266 * are created with a reference-count of one - to help fit into
267 * the existing code-flow; this helps us to construct them easily.
268 * see also VclPtr::Create and ScopedVclPtr
269 *
270 * For more details on the design please see vcl/README.lifecycle
271 *
272 * @param reference_type must be a subclass of vcl::Window
273 */
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
278 template<typename... Arg> VclPtrInstance(Arg &&... arg)
279 : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
280 {
281 }
282
283 /**
284 * Override and disallow this, to prevent people accidentally calling it and actually
285 * getting VclPtr::Create and getting a naked VclPtr<> instance
286 */
287 template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};
289
290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
294 /** Constructor...
295 */
296 ScopedVclPtr()
297 : VclPtr<reference_type>()
298 {}
299
300 /** Constructor
301 */
302 ScopedVclPtr (reference_type * pBody)
303 : VclPtr<reference_type>(pBody)
304 {}
305
306 /** Copy constructor...
307 */
308 ScopedVclPtr (const VclPtr<reference_type> & handle)
309 : VclPtr<reference_type>(handle)
310 {}
311
312 /**
313 Assignment that releases the last reference.
314 */
315 void disposeAndReset(reference_type *pBody)
316 {
317 if (pBody != this->get()) {
318 VclPtr<reference_type>::disposeAndClear();
319 VclPtr<reference_type>::set(pBody);
320 }
321 }
322
323 /**
324 Assignment that releases the last reference.
325 */
326 ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
327 {
328 disposeAndReset(pBody);
329 return *this;
330 }
331
332 /** Up-casting conversion constructor: Copies interface reference.
333
334 Does not work for up-casts to ambiguous bases. For the special case of
335 up-casting to Reference< XInterface >, see the corresponding conversion
336 operator.
337
338 @param rRef another reference
339 */
340 template< class derived_type >
341 ScopedVclPtr(
342 const VclPtr< derived_type > & rRef,
343 typename std::enable_if<
344 std::is_base_of<reference_type, derived_type>::value, int>::type
345 = 0 )
346 : VclPtr<reference_type>( rRef )
347 {
348 }
349
350 /** Up-casting assignment operator.
351
352 Does not work for up-casts to ambiguous bases.
353
354 @param rRef another VclPtr
355 */
356 template<typename derived_type>
357 typename std::enable_if<
358 std::is_base_of<reference_type, derived_type>::value,
359 ScopedVclPtr &>::type
360 operator =(VclPtr<derived_type> const & rRef)
361 {
362 disposeAndReset(rRef.get());
363 return *this;
364 }
365
366 /**
367 * Override and disallow this, to prevent people accidentally calling it and actually
368 * getting VclPtr::Create and getting a naked VclPtr<> instance
369 */
370 template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;
371
372 ~ScopedVclPtr()
373 {
374 VclPtr<reference_type>::disposeAndClear();
375 assert(VclPtr<reference_type>::get() == nullptr)(static_cast <bool> (VclPtr<reference_type>::get(
) == nullptr) ? void (0) : __assert_fail ("VclPtr<reference_type>::get() == nullptr"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 375, __extension__ __PRETTY_FUNCTION__))
; // make sure there are no lingering references
376 }
377
378private:
379 // Most likely we don't want this default copy-constructor.
380 ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
381 // And certainly we don't want a default assignment operator.
382 ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
383 // And disallow reset as that doesn't call disposeAndClear on the original reference
384 void reset() = delete;
385 void reset(reference_type *pBody) = delete;
386
387protected:
388 ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
389 : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
390 {}
391};
392
393/**
394 * A construction helper for ScopedVclPtr. Since VclPtr types are created
395 * with a reference-count of one - to help fit into the existing
396 * code-flow; this helps us to construct them easily.
397 *
398 * For more details on the design please see vcl/README.lifecycle
399 *
400 * @param reference_type must be a subclass of vcl::Window
401 */
402#if defined _MSC_VER
403#pragma warning(push)
404#pragma warning(disable: 4521) // " multiple copy constructors specified"
405#endif
406template <class reference_type>
407class SAL_WARN_UNUSED__attribute__((warn_unused)) ScopedVclPtrInstance final : public ScopedVclPtr<reference_type>
408{
409public:
410 template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
411 : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
412 {
413 }
414
415 /**
416 * Override and disallow this, to prevent people accidentally calling it and actually
417 * getting VclPtr::Create and getting a naked VclPtr<> instance
418 */
419 template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;
420
421private:
422 // Prevent the above perfect forwarding ctor from hijacking (accidental)
423 // attempts at ScopedVclPtrInstance copy construction (where the hijacking
424 // would typically lead to somewhat obscure error messages); both non-const
425 // and const variants are needed here, as the ScopedVclPtr base class has a
426 // const--variant copy ctor, so the implicitly declared copy ctor for
427 // ScopedVclPtrInstance would also be the const variant, so non-const copy
428 // construction attempts would be hijacked by the perfect forwarding ctor;
429 // but if we only declared a non-const variant here, the const variant would
430 // no longer be implicitly declared (as there would already be an explicitly
431 // declared copy ctor), so const copy construction attempts would then be
432 // hijacked by the perfect forwarding ctor:
433 ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
434 ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif
439
440#endif // INCLUDED_VCL_PTR_HXX
441
442/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

/home/maarten/src/libreoffice/core/include/rtl/ref.hxx

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#ifndef INCLUDED_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX
22
23#include "sal/config.h"
24
25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif
31
32#include "sal/types.h"
33
34namespace rtl
35{
36
37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
42 /** The <b>reference_type</b> body pointer.
43 */
44 reference_type * m_pBody;
45
46
47public:
48 /** Constructor...
49 */
50 Reference()
51 : m_pBody (NULL__null)
52 {}
53
54
55 /** Constructor...
56 */
57 Reference (reference_type * pBody, __sal_NoAcquire)
58 : m_pBody (pBody)
59 {
60 }
61
62 /** Constructor...
63 */
64 Reference (reference_type * pBody)
65 : m_pBody (pBody)
66 {
67 if (m_pBody)
68 m_pBody->acquire();
69 }
70
71 /** Copy constructor...
72 */
73 Reference (const Reference<reference_type> & handle)
74 : m_pBody (handle.m_pBody)
75 {
76 if (m_pBody)
77 m_pBody->acquire();
78 }
79
80#ifdef LIBO_INTERNAL_ONLY1
81 /** Move constructor...
82 */
83 Reference (Reference<reference_type> && handle) noexcept
84 : m_pBody (handle.m_pBody)
85 {
86 handle.m_pBody = nullptr;
87 }
88#endif
89
90#if defined LIBO_INTERNAL_ONLY1
91 /** Up-casting conversion constructor: Copies interface reference.
92
93 Does not work for up-casts to ambiguous bases.
94
95 @param rRef another reference
96 */
97 template< class derived_type >
98 inline Reference(
99 const Reference< derived_type > & rRef,
100 std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
101 : m_pBody (rRef.get())
102 {
103 if (m_pBody)
104 m_pBody->acquire();
105 }
106#endif
107
108 /** Destructor...
109 */
110 ~Reference() COVERITY_NOEXCEPT_FALSE
111 {
112 if (m_pBody
14.1
Field 'm_pBody' is non-null
14.1
Field 'm_pBody' is non-null
14.1
Field 'm_pBody' is non-null
14.1
Field 'm_pBody' is non-null
)
15
Taking true branch
113 m_pBody->release();
16
Calling 'VclReferenceBase::release'
20
Returning; memory was released
114 }
115
116 /** Set...
117 Similar to assignment.
118 */
119 Reference<reference_type> &
120 SAL_CALL set (reference_type * pBody)
121 {
122 if (pBody)
123 pBody->acquire();
124 reference_type * const pOld = m_pBody;
125 m_pBody = pBody;
126 if (pOld)
127 pOld->release();
128 return *this;
129 }
130
131 /** Assignment.
132 Unbinds this instance from its body (if bound) and
133 bind it to the body represented by the handle.
134 */
135 Reference<reference_type> &
136 SAL_CALL operator= (const Reference<reference_type> & handle)
137 {
138 return set( handle.m_pBody );
139 }
140
141#ifdef LIBO_INTERNAL_ONLY1
142 /** Assignment.
143 * Unbinds this instance from its body (if bound),
144 * bind it to the body represented by the handle, and
145 * set the body represented by the handle to nullptr.
146 */
147 Reference<reference_type> &
148 operator= (Reference<reference_type> && handle)
149 {
150 // self-movement guts ourself
151 if (m_pBody)
152 m_pBody->release();
153 m_pBody = handle.m_pBody;
154 handle.m_pBody = nullptr;
155 return *this;
156 }
157#endif
158
159 /** Assignment...
160 */
161 Reference<reference_type> &
162 SAL_CALL operator= (reference_type * pBody)
163 {
164 return set( pBody );
165 }
166
167 /** Unbind the body from this handle.
168 Note that for a handle representing a large body,
169 "handle.clear().set(new body());" _might_
170 perform a little bit better than "handle.set(new body());",
171 since in the second case two large objects exist in memory
172 (the old body and the new body).
173 */
174 Reference<reference_type> & SAL_CALL clear()
175 {
176 if (m_pBody)
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
181 }
182 return *this;
183 }
184
185
186 /** Get the body. Can be used instead of operator->().
187 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
188 are the same.
189 */
190 reference_type * SAL_CALL get() const
191 {
192 return m_pBody;
193 }
194
195
196 /** Probably most common used: handle->someBodyOp().
197 */
198 reference_type * SAL_CALL operator->() const
199 {
200 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 200, __extension__ __PRETTY_FUNCTION__))
;
201 return m_pBody;
202 }
203
204
205 /** Allows (*handle).someBodyOp().
206 */
207 reference_type & SAL_CALL operator*() const
208 {
209 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 209, __extension__ __PRETTY_FUNCTION__))
;
210 return *m_pBody;
211 }
212
213
214 /** Returns True if the handle does point to a valid body.
215 */
216 bool SAL_CALL is() const
217 {
218 return (m_pBody != NULL__null);
219 }
220
221#if defined LIBO_INTERNAL_ONLY1
222 /** Returns True if the handle does point to a valid body.
223 */
224 explicit operator bool() const
225 {
226 return is();
227 }
228#endif
229
230 /** Returns True if this points to pBody.
231 */
232 bool SAL_CALL operator== (const reference_type * pBody) const
233 {
234 return (m_pBody == pBody);
235 }
236
237
238 /** Returns True if handle points to the same body.
239 */
240 bool
241 SAL_CALL operator== (const Reference<reference_type> & handle) const
242 {
243 return (m_pBody == handle.m_pBody);
244 }
245
246
247 /** Needed to place References into STL collection.
248 */
249 bool
250 SAL_CALL operator!= (const Reference<reference_type> & handle) const
251 {
252 return (m_pBody != handle.m_pBody);
253 }
254
255
256 /** Needed to place References into STL collection.
257 */
258 bool
259 SAL_CALL operator< (const Reference<reference_type> & handle) const
260 {
261 return (m_pBody < handle.m_pBody);
262 }
263
264
265 /** Needed to place References into STL collection.
266 */
267 bool
268 SAL_CALL operator> (const Reference<reference_type> & handle) const
269 {
270 return (m_pBody > handle.m_pBody);
271 }
272};
273
274} // namespace rtl
275
276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{
279
280/// @cond INTERNAL
281/**
282 Make rtl::Reference hashable by default for use in STL containers.
283
284 @since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
289 std::size_t operator()(::rtl::Reference<T> const & s) const
290 { return std::size_t(s.get()); }
291};
292/// @endcond
293
294}
295
296#endif
297
298#endif /* ! INCLUDED_RTL_REF_HXX */
299
300/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

/home/maarten/src/libreoffice/core/include/vcl/vclreferencebase.hxx

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#ifndef INCLUDED_VCL_Reference_HXX
20#define INCLUDED_VCL_Reference_HXX
21
22#include <vcl/dllapi.h>
23#include <osl/interlck.h>
24
25class VCL_DLLPUBLIC__attribute__ ((visibility("default"))) VclReferenceBase
26{
27 mutable oslInterlockedCount mnRefCnt;
28
29 template<typename T> friend class VclPtr;
30
31public:
32 void acquire() const
33 {
34 osl_atomic_increment(&mnRefCnt)__sync_add_and_fetch((&mnRefCnt), 1);
35 }
36
37 void release() const
38 {
39 if (osl_atomic_decrement(&mnRefCnt)__sync_sub_and_fetch((&mnRefCnt), 1) == 0)
17
Assuming the condition is true
18
Taking true branch
40 delete this;
19
Memory is released
41 }
42#ifdef DBG_UTIL
43#ifndef _WIN32
44 sal_Int32 getRefCount() const { return mnRefCnt; }
45#endif
46#endif
47
48
49private:
50 VclReferenceBase(const VclReferenceBase&) = delete;
51 VclReferenceBase& operator=(const VclReferenceBase&) = delete;
52
53 bool mbDisposed : 1;
54
55protected:
56 VclReferenceBase();
57protected:
58 virtual ~VclReferenceBase();
59
60protected:
61 virtual void dispose();
62
63public:
64 void disposeOnce();
65 bool isDisposed() const { return mbDisposed; }
66
67};
68#endif