1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "clang/AST/Attr.h"
#include "config_clang.h"
#include "check.hxx"
#include "plugin.hxx"
/*
Look for member functions that can be static
*/
namespace {
class StaticMethods:
public loplugin::FilteringPlugin<StaticMethods>
{
private:
bool bVisitedThis;
public:
explicit StaticMethods(loplugin::InstantiationData const & data): FilteringPlugin(data), bVisitedThis(false) {}
void run() override
{ TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
bool TraverseCXXMethodDecl(const CXXMethodDecl * decl);
bool VisitCXXThisExpr(const CXXThisExpr *) { bVisitedThis = true; return true; }
// these three indicate that we hit something that makes our analysis unreliable
bool VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *) { bVisitedThis = true; return true; }
bool VisitCXXDependentScopeMemberExpr(const CXXDependentScopeMemberExpr *) { bVisitedThis = true; return true; }
bool VisitDependentScopeDeclRefExpr(const DependentScopeDeclRefExpr *) { bVisitedThis = true; return true; }
private:
StringRef getFilename(SourceLocation loc);
};
bool BaseCheckNotTestFixtureSubclass(const CXXRecordDecl *BaseDefinition) {
if (loplugin::TypeCheck(BaseDefinition).Class("TestFixture").Namespace("CppUnit").GlobalNamespace()) {
return false;
}
return true;
}
bool isDerivedFromTestFixture(const CXXRecordDecl *decl) {
if (!decl->hasDefinition())
return false;
if (// not sure what hasAnyDependentBases() does,
// but it avoids classes we don't want, e.g. WeakAggComponentImplHelper1
!decl->hasAnyDependentBases() &&
!decl->forallBases(BaseCheckNotTestFixtureSubclass)) {
return true;
}
return false;
}
StringRef StaticMethods::getFilename(SourceLocation loc)
{
SourceLocation spellingLocation = compiler.getSourceManager().getSpellingLoc(loc);
return getFilenameOfLocation(spellingLocation);
}
bool startsWith(const std::string& rStr, const char* pSubStr) {
return rStr.compare(0, strlen(pSubStr), pSubStr) == 0;
}
bool StaticMethods::TraverseCXXMethodDecl(const CXXMethodDecl * pCXXMethodDecl) {
if (ignoreLocation(pCXXMethodDecl)) {
return true;
}
if (!pCXXMethodDecl->isInstance() || pCXXMethodDecl->isVirtual() || !pCXXMethodDecl->doesThisDeclarationHaveABody() || pCXXMethodDecl->isLateTemplateParsed()) {
return true;
}
if (pCXXMethodDecl->getOverloadedOperator() != OverloadedOperatorKind::OO_None || pCXXMethodDecl->hasAttr<OverrideAttr>()) {
return true;
}
if (isa<CXXConstructorDecl>(pCXXMethodDecl) || isa<CXXDestructorDecl>(pCXXMethodDecl) || isa<CXXConversionDecl>(pCXXMethodDecl)) {
return true;
}
if (isInUnoIncludeFile(pCXXMethodDecl)) {
return true;
}
if (pCXXMethodDecl->getTemplateSpecializationKind() == TSK_ExplicitSpecialization)
return true;
// the CppUnit stuff uses macros and methods that can't be changed
if (isDerivedFromTestFixture(pCXXMethodDecl->getParent())) {
return true;
}
// don't mess with the backwards compatibility stuff
if (loplugin::isSamePathname(getFilename(pCXXMethodDecl->getBeginLoc()), SRCDIR "/cppuhelper/source/compat.cxx")) {
return true;
}
// the DDE has a dummy implementation on Linux and a real one on Windows
auto aFilename = getFilename(pCXXMethodDecl->getCanonicalDecl()->getBeginLoc());
if (loplugin::isSamePathname(aFilename, SRCDIR "/include/svl/svdde.hxx")) {
return true;
}
auto cdc = loplugin::DeclCheck(pCXXMethodDecl->getParent());
// special case having something to do with static initialisation
// sal/osl/all/utility.cxx
if (cdc.Class("OGlobalTimer").Namespace("osl").GlobalNamespace()) {
return true;
}
// leave the TopLeft() method alone for consistency with the other "corner" methods
if (cdc.Class("BitmapInfoAccess").GlobalNamespace()) {
return true;
}
// there is some odd stuff happening here I don't fully understand, leave it for now
if (loplugin::hasPathnamePrefix(aFilename, SRCDIR "/include/canvas/") || loplugin::hasPathnamePrefix(aFilename, SRCDIR "/canvas/")) {
return true;
}
// classes that have static data and some kind of weird reference-counting trick in its constructor
if (cdc.Class("LinguOptions").GlobalNamespace()
|| (cdc.Class("EditableExtendedColorConfig").Namespace("svtools")
.GlobalNamespace())
|| (cdc.Class("ExtendedColorConfig").Namespace("svtools")
.GlobalNamespace())
|| cdc.Class("SvtMiscOptions").GlobalNamespace()
|| cdc.Class("SvtAccessibilityOptions").GlobalNamespace()
|| cdc.Class("ColorConfig").Namespace("svtools").GlobalNamespace()
|| cdc.Class("SvtOptionsDrawinglayer").GlobalNamespace()
|| cdc.Class("SvtMenuOptions").GlobalNamespace()
|| cdc.Class("SvtToolPanelOptions").GlobalNamespace()
|| (cdc.Class("SharedResources").Namespace("connectivity")
.GlobalNamespace())
|| (cdc.Class("OParseContextClient").Namespace("svxform")
.GlobalNamespace())
|| cdc.Class("OLimitedFormats").Namespace("frm").GlobalNamespace())
{
return true;
}
auto fdc = loplugin::DeclCheck(pCXXMethodDecl);
// somebody has work-in-progress here
if ((fdc.Function("getCurrZeroChar")
.Class("LocaleDataWrapper").GlobalNamespace()))
return true;
// the unotools and svl config code stuff is doing weird stuff with a reference-counted statically allocated pImpl class
if ((fdc.Function("getByName2")
.Class("GlobalEventConfig").GlobalNamespace()))
return true;
if ((cdc.Class("SvtLinguConfig").GlobalNamespace()))
return true;
if ((cdc.Class("SvtModuleOptions").GlobalNamespace()))
return true;
// only empty on Linux, not on windows
if ((fdc.Function("GetVisualRepresentationInNativeFormat_Impl")
.Class("OleEmbeddedObject").GlobalNamespace())
|| (fdc.Function("GetRidOfComponent").Class("OleEmbeddedObject")
.GlobalNamespace())
|| cdc.Class("SbxDecimal").GlobalNamespace()
|| fdc.Function("Call").Class("SbiDllMgr").GlobalNamespace()
|| fdc.Function("FreeDll").Class("SbiDllMgr").GlobalNamespace()
|| (fdc.Function("InitializeDde").Class("SfxApplication")
.GlobalNamespace())
|| (fdc.Function("RemoveDdeTopic").Class("SfxApplication")
.GlobalNamespace())
|| (fdc.Function("UpdateSkiaStatus").Class("OfaViewTabPage")
.GlobalNamespace())
|| (fdc.Function("ReleaseData").Class("ScannerManager")
.GlobalNamespace()))
{
return true;
}
// debugging stuff
if (fdc.Function("dump").Class("InternalData").Namespace("chart")
.GlobalNamespace())
{
return true;
}
// used in a function-pointer-table
if ((cdc.Class("SbiRuntime").GlobalNamespace()
&& startsWith(pCXXMethodDecl->getNameAsString(), "Step"))
|| (cdc.Class("OoxFormulaParserImpl").AnonymousNamespace().Namespace("xls").Namespace("oox")
.GlobalNamespace())
|| cdc.Class("SwTableFormula").GlobalNamespace()
|| (cdc.Class("BiffFormulaParserImpl").Namespace("xls").Namespace("oox")
.GlobalNamespace())
|| (fdc.Function("Read_F_Shape").Class("SwWW8ImplReader")
.GlobalNamespace())
|| (fdc.Function("Read_Majority").Class("SwWW8ImplReader")
.GlobalNamespace())
|| fdc.Function("Ignore").Class("SwWrtShell").GlobalNamespace()
|| (cdc.Class("AttributesChecker").AnonymousNamespace().GlobalNamespace()
&& startsWith(pCXXMethodDecl->getNameAsString(), "check")))
{
return true;
}
// have no idea why this can't be static, but 'make check' fails with it so...
if (fdc.Function("resolveRelationshipsOfTypeFromOfficeDoc").Class("Shape")
.Namespace("drawingml").Namespace("oox").GlobalNamespace())
{
return true;
}
// template magic
if (fdc.Function("getValue").Class("ColumnBatch").GlobalNamespace()
|| cdc.Class("TitleImpl").GlobalNamespace()
|| (fdc.Function("getDefaultPropertyName").Class("DefaultReturnHelper")
.Namespace("vba").Namespace("ooo").GlobalNamespace()))
{
return true;
}
// depends on config options
if ((fdc.Function("autoInstallFontLangSupport").Class("PrintFontManager")
.Namespace("psp").GlobalNamespace())
|| fdc.Function("AllocateFrame").Class("GtkSalFrame").GlobalNamespace()
|| (fdc.Function("TriggerPaintEvent").Class("GtkSalFrame")
.GlobalNamespace()))
{
return true;
}
bVisitedThis = false;
TraverseStmt(pCXXMethodDecl->getBody());
if (bVisitedThis) {
return true;
}
if (containsPreprocessingConditionalInclusion((pCXXMethodDecl->getSourceRange()))) {
return true;
}
report(
DiagnosticsEngine::Warning,
"this member function can be declared static",
pCXXMethodDecl->getCanonicalDecl()->getLocation())
<< pCXXMethodDecl->getCanonicalDecl()->getSourceRange();
FunctionDecl const * def;
if (pCXXMethodDecl->isDefined(def)
&& def != pCXXMethodDecl->getCanonicalDecl())
{
report(DiagnosticsEngine::Note, "defined here:", def->getLocation())
<< def->getSourceRange();
}
return true;
}
loplugin::Plugin::Registration<StaticMethods> X("staticmethods");
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
