Bug Summary

File:home/maarten/src/libreoffice/core/include/rtl/ref.hxx
Warning:line 192, column 9
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 indexfieldscontrol.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 DBACCESS_DLLIMPLEMENTATION -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/external/unixODBC/inc -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -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/dbaccess/inc -I /home/maarten/src/libreoffice/core/dbaccess/source/inc -I /home/maarten/src/libreoffice/core/dbaccess/source/ui/inc -I /home/maarten/src/libreoffice/core/workdir/YaccTarget/connectivity/source/parse -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/dbaccess/source/ui/dlg/indexfieldscontrol.cxx

/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.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 <core_resource.hxx>
21#include <indexfieldscontrol.hxx>
22#include <strings.hrc>
23#include <osl/diagnose.h>
24#include <helpids.h>
25#include <toolkit/helper/vclunohelper.hxx>
26#include <vcl/settings.hxx>
27#include <vcl/svapp.hxx>
28
29namespace dbaui
30{
31
32constexpr auto BROWSER_STANDARD_FLAGS = BrowserMode::COLUMNSELECTION | BrowserMode::HLINES | BrowserMode::VLINES |
33 BrowserMode::HIDECURSOR | BrowserMode::HIDESELECT | BrowserMode::AUTO_HSCROLL | BrowserMode::AUTO_VSCROLL;
34
35#define COLUMN_ID_FIELDNAME1 1
36#define COLUMN_ID_ORDER2 2
37
38 using namespace ::com::sun::star::uno;
39 using namespace ::svt;
40
41 // DbaMouseDownListBoxController
42 class DbaMouseDownListBoxController : public ListBoxCellController
43 {
44 protected:
45 Link<DbaMouseDownListBoxController&,void> m_aAdditionalModifyHdl;
46
47 public:
48 explicit DbaMouseDownListBoxController(ListBoxControl* _pParent)
49 :ListBoxCellController(_pParent)
50 {
51 }
52
53 void SetAdditionalModifyHdl(const Link<DbaMouseDownListBoxController&,void>& _rHdl);
54
55 protected:
56 virtual void callModifyHdl() override;
57 };
58
59 void DbaMouseDownListBoxController::SetAdditionalModifyHdl(const Link<DbaMouseDownListBoxController&,void>& _rHdl)
60 {
61 m_aAdditionalModifyHdl = _rHdl;
62 }
63
64 void DbaMouseDownListBoxController::callModifyHdl()
65 {
66 m_aAdditionalModifyHdl.Call(*this);
67 ListBoxCellController::callModifyHdl();
68 }
69
70 // IndexFieldsControl
71 IndexFieldsControl::IndexFieldsControl(const css::uno::Reference<css::awt::XWindow> &rParent)
72 : EditBrowseBox(VCLUnoHelper::GetWindow(rParent), EditBrowseBoxFlags::SMART_TAB_TRAVEL | EditBrowseBoxFlags::ACTIVATE_ON_BUTTONDOWN, WB_TABSTOP | WB_BORDER, BROWSER_STANDARD_FLAGS)
73 , m_aSeekRow(m_aFields.end())
74 , m_pSortingCell(nullptr)
75 , m_pFieldNameCell(nullptr)
76 , m_bAddIndexAppendix(false)
77 {
78 }
79
80 IndexFieldsControl::~IndexFieldsControl()
81 {
82 disposeOnce();
83 }
84
85 void IndexFieldsControl::dispose()
86 {
87 m_pSortingCell.disposeAndClear();
1
Calling 'VclPtr::disposeAndClear'
→
88 m_pFieldNameCell.disposeAndClear();
89 ::svt::EditBrowseBox::dispose();
90 }
91
92 bool IndexFieldsControl::SeekRow(long nRow)
93 {
94 if (!EditBrowseBox::SeekRow(nRow))
95 return false;
96
97 if (nRow < 0)
98 {
99 m_aSeekRow = m_aFields.end();
100 }
101 else
102 {
103 m_aSeekRow = m_aFields.begin() + nRow;
104 OSL_ENSURE(m_aSeekRow <= m_aFields.end(), "IndexFieldsControl::SeekRow: invalid row!")do { if (true && (!(m_aSeekRow <= m_aFields.end())
)) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "104" ": "), "%s", "IndexFieldsControl::SeekRow: invalid row!"
); } } while (false);
105 }
106
107 return true;
108 }
109
110 void IndexFieldsControl::PaintCell( OutputDevice& _rDev, const tools::Rectangle& _rRect, sal_uInt16 _nColumnId ) const
111 {
112 Point aPos(_rRect.TopLeft());
113 aPos.AdjustX(1 );
114
115 OUString aText = GetRowCellText(m_aSeekRow,_nColumnId);
116 Size TxtSize(GetDataWindow().GetTextWidth(aText), GetDataWindow().GetTextHeight());
117
118 // clipping
119 if (aPos.X() < _rRect.Right() || aPos.X() + TxtSize.Width() > _rRect.Right() ||
120 aPos.Y() < _rRect.Top() || aPos.Y() + TxtSize.Height() > _rRect.Bottom())
121 _rDev.SetClipRegion(vcl::Region(_rRect));
122
123 // allow for a disabled control ...
124 bool bEnabled = IsEnabled();
125 Color aOriginalColor = _rDev.GetTextColor();
126 if (!bEnabled)
127 _rDev.SetTextColor(GetSettings().GetStyleSettings().GetDisableColor());
128
129 // draw the text
130 _rDev.DrawText(aPos, aText);
131
132 // reset the color (if necessary)
133 if (!bEnabled)
134 _rDev.SetTextColor(aOriginalColor);
135
136 if (_rDev.IsClipRegion())
137 _rDev.SetClipRegion();
138 }
139
140 void IndexFieldsControl::initializeFrom(const IndexFields& _rFields)
141 {
142 // copy the field descriptions
143 m_aFields = _rFields;
144 m_aSeekRow = m_aFields.end();
145
146 SetUpdateMode(false);
147 // remove all rows
148 RowRemoved(1, GetRowCount());
149 // insert rows for the fields
150 RowInserted(GetRowCount(), m_aFields.size(), false);
151 // insert an additional row for a new field for that index
152 RowInserted(GetRowCount(), 1, false);
153 SetUpdateMode(true);
154
155 GoToRowColumnId(0, COLUMN_ID_FIELDNAME1);
156 }
157
158 void IndexFieldsControl::commitTo(IndexFields& _rFields)
159 {
160 // do not just copy the array, we may have empty field names (which should not be copied)
161 _rFields.resize(m_aFields.size());
162 IndexFields::iterator aDest = std::copy_if(m_aFields.begin(), m_aFields.end(), _rFields.begin(),
163 [](const OIndexField& source) { return !source.sFieldName.isEmpty(); });
164
165 _rFields.resize(aDest - _rFields.begin());
166 }
167
168 sal_uInt32 IndexFieldsControl::GetTotalCellWidth(long _nRow, sal_uInt16 _nColId)
169 {
170 if (COLUMN_ID_ORDER2 == _nColId)
171 {
172 sal_Int32 nWidthAsc = GetTextWidth(m_sAscendingText) + GetSettings().GetStyleSettings().GetScrollBarSize();
173 sal_Int32 nWidthDesc = GetTextWidth(m_sDescendingText) + GetSettings().GetStyleSettings().GetScrollBarSize();
174 // maximum plus some additional space
175 return std::max(nWidthAsc, nWidthDesc) + GetTextWidth(OUString('0')) * 2;
176 }
177 return EditBrowseBox::GetTotalCellWidth(_nRow, _nColId);
178 }
179
180 void IndexFieldsControl::Init(const Sequence< OUString >& _rAvailableFields, bool _bAddIndexAppendix)
181 {
182 m_bAddIndexAppendix = _bAddIndexAppendix;
183
184 RemoveColumns();
185
186 // for the width: both columns together should be somewhat smaller than the whole window (without the scrollbar)
187 sal_Int32 nFieldNameWidth = GetSizePixel().Width();
188
189 if ( m_bAddIndexAppendix )
190 {
191 m_sAscendingText = DBA_RES(STR_ORDER_ASCENDING)::dbaccess::ResourceManager::loadString( reinterpret_cast<
char const *>("STR_ORDER_ASCENDING" "\004" u8"Ascending") );
192 m_sDescendingText = DBA_RES(STR_ORDER_DESCENDING)::dbaccess::ResourceManager::loadString( reinterpret_cast<
char const *>("STR_ORDER_DESCENDING" "\004" u8"Descending"
) );
193
194 // the "sort order" column
195 OUString sColumnName = DBA_RES(STR_TAB_INDEX_SORTORDER)::dbaccess::ResourceManager::loadString( reinterpret_cast<
char const *>("STR_TAB_INDEX_SORTORDER" "\004" u8"Sort order"
) );
196 // the width of the order column is the maximum widths of the texts used
197 // (the title of the column)
198 sal_Int32 nSortOrderColumnWidth = GetTextWidth(sColumnName);
199 // ("ascending" + scrollbar width)
200 sal_Int32 nOther = GetTextWidth(m_sAscendingText) + GetSettings().GetStyleSettings().GetScrollBarSize();
201 nSortOrderColumnWidth = std::max(nSortOrderColumnWidth, nOther);
202 // ("descending" + scrollbar width)
203 nOther = GetTextWidth(m_sDescendingText) + GetSettings().GetStyleSettings().GetScrollBarSize();
204 nSortOrderColumnWidth = std::max(nSortOrderColumnWidth, nOther);
205 // (plus some additional space)
206 nSortOrderColumnWidth += GetTextWidth(OUString('0')) * 2;
207 InsertDataColumn(COLUMN_ID_ORDER2, sColumnName, nSortOrderColumnWidth, HeaderBarItemBits::STDSTYLE, 1);
208
209 m_pSortingCell = VclPtr<ListBoxControl>::Create(&GetDataWindow());
210 weld::ComboBox& rSortingListBox = m_pSortingCell->get_widget();
211 rSortingListBox.append_text(m_sAscendingText);
212 rSortingListBox.append_text(m_sDescendingText);
213 rSortingListBox.set_help_id(HID_DLGINDEX_INDEXDETAILS_SORTORDER"DBACCESS_HID_DLGINDEX_INDEXDETAILS_SORTORDER");
214
215 nFieldNameWidth -= nSortOrderColumnWidth;
216 }
217 StyleSettings aSystemStyle = Application::GetSettings().GetStyleSettings();
218 nFieldNameWidth -= aSystemStyle.GetScrollBarSize();
219 nFieldNameWidth -= 8;
220 // the "field name" column
221 OUString sColumnName = DBA_RES(STR_TAB_INDEX_FIELD)::dbaccess::ResourceManager::loadString( reinterpret_cast<
char const *>("STR_TAB_INDEX_FIELD" "\004" u8"Index field"
) );
222 InsertDataColumn(COLUMN_ID_FIELDNAME1, sColumnName, nFieldNameWidth, HeaderBarItemBits::STDSTYLE, 0);
223
224 // create the cell controllers
225 // for the field name cell
226 m_pFieldNameCell = VclPtr<ListBoxControl>::Create(&GetDataWindow());
227 weld::ComboBox& rNameListBox = m_pFieldNameCell->get_widget();
228 rNameListBox.append_text(OUString());
229 rNameListBox.set_help_id(HID_DLGINDEX_INDEXDETAILS_FIELD"DBACCESS_HID_DLGINDEX_INDEXDETAILS_FIELD");
230 const OUString* pFields = _rAvailableFields.getConstArray();
231 const OUString* pFieldsEnd = pFields + _rAvailableFields.getLength();
232 for (;pFields < pFieldsEnd; ++pFields)
233 rNameListBox.append_text(*pFields);
234 }
235
236 CellController* IndexFieldsControl::GetController(long _nRow, sal_uInt16 _nColumnId)
237 {
238 if (!IsEnabled())
239 return nullptr;
240
241 IndexFields::const_iterator aRow;
242 bool bNewField = !implGetFieldDesc(_nRow, aRow);
243
244 DbaMouseDownListBoxController* pReturn = nullptr;
245 switch (_nColumnId)
246 {
247 case COLUMN_ID_ORDER2:
248 if (!bNewField && m_pSortingCell && !aRow->sFieldName.isEmpty())
249 pReturn = new DbaMouseDownListBoxController(m_pSortingCell);
250 break;
251
252 case COLUMN_ID_FIELDNAME1:
253 pReturn = new DbaMouseDownListBoxController(m_pFieldNameCell);
254 break;
255
256 default:
257 OSL_FAIL("IndexFieldsControl::GetController: invalid column id!")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "257" ": "), "%s", "IndexFieldsControl::GetController: invalid column id!"
); } } while (false);
258 }
259
260 if (pReturn)
261 pReturn->SetAdditionalModifyHdl(LINK(this, IndexFieldsControl, OnListEntrySelected)::tools::detail::makeLink( ::tools::detail::castTo<IndexFieldsControl
*>(this), &IndexFieldsControl::LinkStubOnListEntrySelected
));
262
263 return pReturn;
264 }
265
266 bool IndexFieldsControl::implGetFieldDesc(long _nRow, IndexFields::const_iterator& _rPos)
267 {
268 _rPos = m_aFields.end();
269 if ((_nRow < 0) || (_nRow >= static_cast<sal_Int32>(m_aFields.size())))
270 return false;
271 _rPos = m_aFields.begin() + _nRow;
272 return true;
273 }
274
275 bool IndexFieldsControl::SaveModified()
276 {
277 if (!IsModified())
278 return true;
279
280 switch (GetCurColumnId())
281 {
282 case COLUMN_ID_FIELDNAME1:
283 {
284 weld::ComboBox& rNameListBox = m_pFieldNameCell->get_widget();
285 OUString sFieldSelected = rNameListBox.get_active_text();
286 bool bEmptySelected = sFieldSelected.isEmpty();
287 if (isNewField())
288 {
289 if (!bEmptySelected)
290 {
291 // add a new field to the collection
292 OIndexField aNewField;
293 aNewField.sFieldName = sFieldSelected;
294 m_aFields.push_back(aNewField);
295 RowInserted(GetRowCount());
296 }
297 }
298 else
299 {
300 sal_Int32 nRow = GetCurRow();
301 OSL_ENSURE(nRow < static_cast<sal_Int32>(m_aFields.size()), "IndexFieldsControl::SaveModified: invalid current row!")do { if (true && (!(nRow < static_cast<sal_Int32
>(m_aFields.size())))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN
), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "301" ": "), "%s", "IndexFieldsControl::SaveModified: invalid current row!"
); } } while (false);
302 if (nRow >= 0) // may be -1 in case the control was empty
303 {
304 // remove the field from the selection
305 IndexFields::iterator aPos = m_aFields.begin() + nRow;
306
307 if (bEmptySelected)
308 {
309 aPos->sFieldName.clear();
310
311 // invalidate the row to force repaint
312 Invalidate(GetRowRectPixel(nRow));
313 return true;
314 }
315
316 if (sFieldSelected == aPos->sFieldName)
317 // nothing changed
318 return true;
319
320 aPos->sFieldName = sFieldSelected;
321 }
322 }
323
324 Invalidate(GetRowRectPixel(GetCurRow()));
325 }
326 break;
327 case COLUMN_ID_ORDER2:
328 {
329 OSL_ENSURE(!isNewField(), "IndexFieldsControl::SaveModified: why the hell ...!!!")do { if (true && (!(!isNewField()))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "329" ": "), "%s", "IndexFieldsControl::SaveModified: why the hell ...!!!"
); } } while (false);
330 // selected entry
331 weld::ComboBox& rSortingListBox = m_pSortingCell->get_widget();
332 sal_Int32 nPos = rSortingListBox.get_active();
333 OSL_ENSURE(nPos != -1, "IndexFieldsControl::SaveModified: how did you get this selection??")do { if (true && (!(nPos != -1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "333" ": "), "%s", "IndexFieldsControl::SaveModified: how did you get this selection??"
); } } while (false);
334 // adjust the sort flag in the index field description
335 OIndexField& rCurrentField = m_aFields[GetCurRow()];
336 rCurrentField.bSortAscending = (0 == nPos);
337
338 }
339 break;
340 default:
341 OSL_FAIL("IndexFieldsControl::SaveModified: invalid column id!")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "341" ": "), "%s", "IndexFieldsControl::SaveModified: invalid column id!"
); } } while (false);
342 }
343 return true;
344 }
345
346 void IndexFieldsControl::InitController(CellControllerRef& /*_rController*/, long _nRow, sal_uInt16 _nColumnId)
347 {
348 IndexFields::const_iterator aFieldDescription;
349 bool bNewField = !implGetFieldDesc(_nRow, aFieldDescription);
350
351 switch (_nColumnId)
352 {
353 case COLUMN_ID_FIELDNAME1:
354 {
355 weld::ComboBox& rNameListBox = m_pFieldNameCell->get_widget();
356 rNameListBox.set_active_text(bNewField ? OUString() : aFieldDescription->sFieldName);
357 rNameListBox.save_value();
358 break;
359 }
360
361 case COLUMN_ID_ORDER2:
362 {
363 weld::ComboBox& rSortingListBox = m_pSortingCell->get_widget();
364 rSortingListBox.set_active_text(aFieldDescription->bSortAscending ? m_sAscendingText : m_sDescendingText);
365 rSortingListBox.save_value();
366 break;
367 }
368
369 default:
370 OSL_FAIL("IndexFieldsControl::InitController: invalid column id!")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "370" ": "), "%s", "IndexFieldsControl::InitController: invalid column id!"
); } } while (false);
371 }
372 }
373
374 IMPL_LINK( IndexFieldsControl, OnListEntrySelected, DbaMouseDownListBoxController&, rController, void )void IndexFieldsControl::LinkStubOnListEntrySelected(void * instance
, DbaMouseDownListBoxController& data) { return static_cast
<IndexFieldsControl *>(instance)->OnListEntrySelected
(data); } void IndexFieldsControl::OnListEntrySelected(DbaMouseDownListBoxController
& rController)
375 {
376 weld::ComboBox& rListBox = rController.GetListBox();
377 if (!rListBox.get_popup_shown())
378 m_aModifyHdl.Call(*this);
379
380 if (&rListBox != &m_pFieldNameCell->get_widget())
381 return;
382
383// a field has been selected
384 if (GetCurRow() >= GetRowCount() - 2)
385 { // and we're in one of the last two rows
386 OUString sSelectedEntry = rListBox.get_active_text();
387 sal_Int32 nCurrentRow = GetCurRow();
388 sal_Int32 rowCount = GetRowCount();
389
390 OSL_ENSURE((static_cast<sal_Int32>(m_aFields.size() + 1)) == rowCount, "IndexFieldsControl::OnListEntrySelected: inconsistence!")do { if (true && (!((static_cast<sal_Int32>(m_aFields
.size() + 1)) == rowCount))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN
), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "390" ": "), "%s", "IndexFieldsControl::OnListEntrySelected: inconsistence!"
); } } while (false);
391
392 if (!sSelectedEntry.isEmpty() && (nCurrentRow == rowCount - 1) /*&& (!m_nMaxColumnsInIndex || rowCount < m_nMaxColumnsInIndex )*/ )
393 { // in the last row, a non-empty string has been selected
394 // -> insert a new row
395 m_aFields.emplace_back();
396 RowInserted(GetRowCount());
397 Invalidate(GetRowRectPixel(nCurrentRow));
398 }
399 else if (sSelectedEntry.isEmpty() && (nCurrentRow == rowCount - 2))
400 { // in the (last-1)th row, an empty entry has been selected
401 // -> remove the last row
402 m_aFields.pop_back();
403 RowRemoved(GetRowCount() - 1);
404 Invalidate(GetRowRectPixel(nCurrentRow));
405 }
406 }
407
408 SaveModified();
409 }
410 OUString IndexFieldsControl::GetCellText(long _nRow,sal_uInt16 nColId) const
411 {
412 IndexFields::const_iterator aRow = m_aFields.end();
413 if ( _nRow >= 0 )
414 {
415 aRow = m_aFields.begin() + _nRow;
416 OSL_ENSURE(aRow <= m_aFields.end(), "IndexFieldsControl::SeekRow: invalid row!")do { if (true && (!(aRow <= m_aFields.end()))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "416" ": "), "%s", "IndexFieldsControl::SeekRow: invalid row!"
); } } while (false);
417 }
418 return GetRowCellText(aRow,nColId);
419 }
420 OUString IndexFieldsControl::GetRowCellText(const IndexFields::const_iterator& _rRow,sal_uInt16 nColId) const
421 {
422 if (_rRow < m_aFields.end())
423 {
424 switch (nColId)
425 {
426 case COLUMN_ID_FIELDNAME1:
427 return _rRow->sFieldName;
428 case COLUMN_ID_ORDER2:
429 if (_rRow->sFieldName.isEmpty())
430 return OUString();
431 else
432 return _rRow->bSortAscending ? m_sAscendingText : m_sDescendingText;
433 default:
434 OSL_FAIL("IndexFieldsControl::GetCurrentRowCellText: invalid column id!")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/dlg/indexfieldscontrol.cxx"
":" "434" ": "), "%s", "IndexFieldsControl::GetCurrentRowCellText: invalid column id!"
); } } while (false);
435 }
436 }
437 return OUString();
438 }
439 bool IndexFieldsControl::IsTabAllowed(bool /*bForward*/) const
440 {
441 return false;
442 }
443
444} // namespace dbaui
445
446/* 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 );
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);
2
←
Calling copy constructor for 'Reference<svt::ListBoxControl>'
→
5
←
Returning from copy constructor for 'Reference<svt::ListBoxControl>'
→
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
6
←
Calling 'Reference::clear'
→
13
←
Returning; memory was released
→
205 if (aTmp.get()) {
14
←
Calling 'Reference::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)
3
←
Assuming field 'm_pBody' is non-null
→
4
←
Taking true branch
→
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)
113 m_pBody->release();
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
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
)
7
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
8
←
Calling 'VclReferenceBase::release'
→
12
←
Returning; memory was released
→
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;
15
←
Use of memory after it is freed
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)
9
←
Assuming the condition is true
→
10
←
Taking true branch
→
40 delete this;
11
←
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