summaryrefslogtreecommitdiff
path: root/compilerplugins/clang/refcounting.cxx
blob: 05d7fe943b6266c9271ab7c97fb07030de1b0ef1 (plain)
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
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
/* -*- 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 <string>
#include <iostream>

#include "check.hxx"
#include "compat.hxx"
#include "plugin.hxx"
#include "clang/AST/CXXInheritance.h"

/**

If you have:

    class Foo : public css::foo::XBaa {
    };

Then XBaa has acquire and release methods inherited from XInterface.
These are hard lifecycle controls.

If you see another class:

    class Baz {
        Foo aFooMember;
    };

this is a bug =) since aFooMember assumes heap allocated lifecycle and
not delete on last 'release'.

TODO check that things that extend SvRefBase are managed by SvRef
TODO fix the slideshow::internal::SlideView class (mentioned below)
*/

namespace {

class RefCounting:
    public RecursiveASTVisitor<RefCounting>, public loplugin::Plugin
{
public:
    explicit RefCounting(InstantiationData const & data): Plugin(data) {}

    virtual void run() override { TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }

    bool VisitFieldDecl(const FieldDecl *);
    bool VisitVarDecl(const VarDecl *);
    bool VisitFunctionDecl(const FunctionDecl *);

    // Creation of temporaries with one argument are represented by
    // CXXFunctionalCastExpr, while any other number of arguments are
    // represented by CXXTemporaryObjectExpr:
    bool VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr const * expr)
    { return visitTemporaryObjectExpr(expr); }
    bool VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr const * expr)
    { return visitTemporaryObjectExpr(expr); }

    bool WalkUpFromObjCIvarDecl(ObjCIvarDecl * decl) {
        // Don't recurse into WalkUpFromFieldDecl, as VisitFieldDecl calls
        // FieldDecl::getParent, which triggers an assertion at least with
        // current trunk towards Clang 3.7 when the FieldDecl is actually an
        // ObjCIvarDecl.
        return VisitObjCIvarDecl(decl);
    }
private:
    void checkUnoReference(QualType qt, const Decl* decl,
                           const RecordDecl* parent, const std::string& rDeclName);

    bool visitTemporaryObjectExpr(Expr const * expr);
};

typedef std::function<bool(Decl const *)> DeclChecker;

bool BaseCheckNotSubclass(const CXXRecordDecl *BaseDefinition, void *p) {
    if (!BaseDefinition)
        return true;
    auto const & base = *static_cast<const DeclChecker *>(p);
    if (base(BaseDefinition)) {
        return false;
    }
    return true;
}

bool isDerivedFrom(const CXXRecordDecl *decl, DeclChecker base) {
    if (!decl)
        return false;
    if (base(decl))
        return true;
    if (!decl->hasDefinition()) {
        return false;
    }
    if (!compat::forallBases(
            *decl,
#if CLANG_VERSION < 30800
            BaseCheckNotSubclass,
#else
            [&base](const CXXRecordDecl *BaseDefinition) -> bool
                { return BaseCheckNotSubclass(BaseDefinition, &base); },
#endif
            &base, true))
    {
        return true;
    }
    return false;
}


bool containsXInterfaceSubclass(const clang::Type* pType0);

bool containsXInterfaceSubclass(const QualType& qType) {
    return containsXInterfaceSubclass(qType.getTypePtr());
}

bool containsXInterfaceSubclass(const clang::Type* pType0) {
    if (!pType0)
        return false;
    const clang::Type* pType = pType0->getUnqualifiedDesugaredType();
    if (!pType)
        return false;
    const CXXRecordDecl* pRecordDecl = pType->getAsCXXRecordDecl();
    if (pRecordDecl) {
        pRecordDecl = pRecordDecl->getCanonicalDecl();
        // these classes override acquire/release and forwards to its parent
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("ListenerMultiplexerBase").GlobalNamespace()); })) { // module UnoTools
            return false;
        }
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("GridEventForwarder").Namespace("toolkit").GlobalNamespace()); })) { // module toolkit
            return false;
        }
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("OWeakSubObject").GlobalNamespace()); })) { // module svx
            return false;
        }
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("OSbaWeakSubObject").Namespace("dbaui").GlobalNamespace()); })) { // module dbaccess
            return false;
        }
        // The actual problem child is SlideView, of which this is the parent.
        // Everything in the hierarchy above this wants to be managed via boost::shared_ptr
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("UnoView").Namespace("internal").Namespace("slideshow").GlobalNamespace()); })) { // module slideshow
            return false;
        }
        // FIXME This class has private operator new, and I cannot figure out how it can be dynamically instantiated
        if (isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("XPropertyList").GlobalNamespace()); })) { // module svx
            return false;
        }
    }
    if (pRecordDecl) {
        const ClassTemplateSpecializationDecl* pTemplate = dyn_cast<ClassTemplateSpecializationDecl>(pRecordDecl);
        if (pTemplate) {
            // Probably good templates:
            loplugin::DeclCheck dc(pTemplate);
            if ((dc.Struct("FindUnoInstanceHint").AnonymousNamespace()
                 .GlobalNamespace())
                || (dc.Class("OMultiInstanceAutoRegistration").Namespace("abp")
                    .GlobalNamespace())
                || (dc.Class("Reference").Namespace("uno").Namespace("star")
                    .Namespace("sun").Namespace("com").GlobalNamespace())
                || (dc.Class("WeakReference").Namespace("uno").Namespace("star")
                    .Namespace("sun").Namespace("com").GlobalNamespace())
                || (dc.Class("Sequence").Namespace("uno").Namespace("star")
                    .Namespace("sun").Namespace("com").GlobalNamespace())
                || (dc.Class("WeakCppRef").Namespace("accessibility")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("dba")
                    .GlobalNamespace())
                || (dc.Class("OMultiInstanceAutoRegistration").Namespace("dbp")
                    .GlobalNamespace())
                || (dc.Class("OMultiInstanceAutoRegistration")
                    .Namespace("dbaui").GlobalNamespace())
                || (dc.Class("OMultiInstanceAutoRegistration")
                    .Namespace("dbaxml").GlobalNamespace())
                || (dc.Struct("ReferenceEqual").Namespace("io_acceptor")
                    .GlobalNamespace())
                || (dc.Struct("ReferenceHash").Namespace("io_acceptor")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("comphelper")
                    .GlobalNamespace())
                || (dc.Struct("OInterfaceCompare").Namespace("comphelper")
                    .GlobalNamespace())
                || dc.Class("WeakBag").Namespace("comphelper").GlobalNamespace()
                || (dc.Struct("class_").Namespace("service_decl")
                    .Namespace("comphelper").GlobalNamespace())
                || (dc.Struct("vba_service_class_").Namespace("service_decl")
                    .Namespace("comphelper").GlobalNamespace())
                || (dc.Struct("inheritingClass_").Namespace("service_decl")
                    .Namespace("comphelper").GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("module")
                    .Namespace("comphelper").GlobalNamespace())
                || (dc.Class("mem_fun1_t").Namespace("comphelper")
                    .GlobalNamespace())
                || (dc.Class("OSimpleListenerContainer").Namespace("comphelper")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("dbmm")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("pcr")
                    .GlobalNamespace())
                || (dc.Class("ComponentMethodGuard").Namespace("logging")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("logging")
                    .GlobalNamespace())
                || dc.Class("Reference").Namespace("rtl").GlobalNamespace()
                || (dc.Class("OAutoRegistration").Namespace("sdbtools")
                    .GlobalNamespace())
                || (dc.Struct("ReferenceEqual").Namespace("stoc_connector")
                    .GlobalNamespace())
                || (dc.Struct("ReferenceHash").Namespace("stoc_connector")
                    .GlobalNamespace())
                || dc.Class("mem_fun_t").StdNamespace()
                || dc.Class("mem_fun1_t").StdNamespace()
                || dc.Class("SwIterator").GlobalNamespace()
                || (dc.Class("SharedUNOComponent").Namespace("utl")
                    .GlobalNamespace())
                || (dc.Class("OAutoRegistration").Namespace("utl")
                    .GlobalNamespace())
                || (dc.Class("DeleteUnoReferenceOnDeinit").Namespace("vcl")
                    .GlobalNamespace())
                || (dc.Struct("OInterfaceCompare").Namespace("xmloff")
                    .GlobalNamespace()))
            {
                return false;
            }
        }
    }
    if (pType->isPointerType()) {
        // ignore
        return false;
    } else if (pType->isArrayType()) {
        const clang::ArrayType* pArrayType = dyn_cast<clang::ArrayType>(pType);
        QualType elementType = pArrayType->getElementType();
        return containsXInterfaceSubclass(elementType);
    } else {
        return isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("XInterface").Namespace("uno").Namespace("star").Namespace("sun").Namespace("com").GlobalNamespace()); });
    }
}

bool containsSvRefBaseSubclass(const clang::Type* pType0) {
    if (!pType0)
        return false;
    const clang::Type* pType = pType0->getUnqualifiedDesugaredType();
    if (!pType)
        return false;
    const CXXRecordDecl* pRecordDecl = pType->getAsCXXRecordDecl();
    if (pRecordDecl) {
        pRecordDecl = pRecordDecl->getCanonicalDecl();
    }
    if (pRecordDecl) {
        const ClassTemplateSpecializationDecl* pTemplate = dyn_cast<ClassTemplateSpecializationDecl>(pRecordDecl);
        if (pTemplate) {
            if (loplugin::DeclCheck(pTemplate).Class("SvRef")
                .Namespace("tools").GlobalNamespace())
            {
                return false;
            }
            for(unsigned i=0; i<pTemplate->getTemplateArgs().size(); ++i) {
                const TemplateArgument& rArg = pTemplate->getTemplateArgs()[i];
                if (rArg.getKind() == TemplateArgument::ArgKind::Type &&
                    containsSvRefBaseSubclass(rArg.getAsType().getTypePtr()))
                {
                    return true;
                }
            }
        }
    }
    if (pType->isPointerType()) {
        // ignore
        return false;
    } else if (pType->isArrayType()) {
        const clang::ArrayType* pArrayType = dyn_cast<clang::ArrayType>(pType);
        QualType elementType = pArrayType->getElementType();
        return containsSvRefBaseSubclass(elementType.getTypePtr());
    } else {
        return isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("SvRefBase").Namespace("tools").GlobalNamespace()); });
    }
}

bool containsSalhelperReferenceObjectSubclass(const clang::Type* pType0) {
    if (!pType0)
        return false;
    const clang::Type* pType = pType0->getUnqualifiedDesugaredType();
    if (!pType)
        return false;
    const CXXRecordDecl* pRecordDecl = pType->getAsCXXRecordDecl();
    if (pRecordDecl) {
        pRecordDecl = pRecordDecl->getCanonicalDecl();
    }
    if (pRecordDecl) {
        const ClassTemplateSpecializationDecl* pTemplate = dyn_cast<ClassTemplateSpecializationDecl>(pRecordDecl);
        if (pTemplate) {
            auto const dc = loplugin::DeclCheck(pTemplate);
            if (dc.Class("Reference").Namespace("rtl").GlobalNamespace()
                || (dc.Class("OStoreHandle").Namespace("store")
                    .GlobalNamespace()))
            {
                return false;
            }
            for(unsigned i=0; i<pTemplate->getTemplateArgs().size(); ++i) {
                const TemplateArgument& rArg = pTemplate->getTemplateArgs()[i];
                if (rArg.getKind() == TemplateArgument::ArgKind::Type &&
                    containsSalhelperReferenceObjectSubclass(rArg.getAsType().getTypePtr()))
                {
                    return true;
                }
            }
        }
    }
    if (pType->isPointerType()) {
        // ignore
        return false;
    } else if (pType->isArrayType()) {
        const clang::ArrayType* pArrayType = dyn_cast<clang::ArrayType>(pType);
        QualType elementType = pArrayType->getElementType();
        return containsSalhelperReferenceObjectSubclass(elementType.getTypePtr());
    } else {
        return isDerivedFrom(pRecordDecl, [](Decl const * decl) -> bool { return bool(loplugin::DeclCheck(decl).Class("SimpleReferenceObject").Namespace("salhelper").GlobalNamespace()); });
    }
}

static bool containsStaticTypeMethod(const CXXRecordDecl* x)
{
    for (auto it = x->method_begin(); it != x->method_end(); ++it) {
        auto i = *it;
        if ( !i->isStatic() )
            continue;
        auto ident = i->getIdentifier();
        if ( ident && ident->isStr("static_type") ) {
            return true;
        }
    }
    return false;
}

void RefCounting::checkUnoReference(QualType qt, const Decl* decl, const RecordDecl* parent, const std::string& rDeclName)
{
    if (loplugin::TypeCheck(qt).Class("Reference").Namespace("uno").Namespace("star").Namespace("sun").Namespace("com").GlobalNamespace()) {
        const CXXRecordDecl* pRecordDecl = qt->getAsCXXRecordDecl();
        const ClassTemplateSpecializationDecl* pTemplate = dyn_cast<ClassTemplateSpecializationDecl>(pRecordDecl);
        const TemplateArgument& rArg = pTemplate->getTemplateArgs()[0];
        const CXXRecordDecl* templateParam = rArg.getAsType()->getAsCXXRecordDecl()->getDefinition();
        if (templateParam && !containsStaticTypeMethod(templateParam)) {
            report(
                DiagnosticsEngine::Warning,
                ("uno::Reference %0 with template parameter that does not"
                 " contain ::static_type() %1%select{|, parent is %3,}2 should"
                 " probably be using rtl::Reference instead"),
                decl->getLocation())
              << rDeclName << qt << (parent != nullptr)
              << (parent != nullptr
                  ? parent->getQualifiedNameAsString() : std::string())
              << decl->getSourceRange();
        }
    }
}

bool RefCounting::visitTemporaryObjectExpr(Expr const * expr) {
    if (ignoreLocation(expr)) {
        return true;
    }
    auto t = expr->getType();
    if (containsSvRefBaseSubclass(t.getTypePtr())) {
        report(
            DiagnosticsEngine::Warning,
            ("Temporary object of SvRefBase subclass %0 being directly stack"
             " managed, should be managed via tools::SvRef"),
            expr->getLocStart())
            << t.getUnqualifiedType() << expr->getSourceRange();
    } else if (containsSalhelperReferenceObjectSubclass(t.getTypePtr())) {
        report(
            DiagnosticsEngine::Warning,
            ("Temporary object of salhelper::SimpleReferenceObject subclass %0"
             " being directly stack managed, should be managed via"
             " rtl::Reference"),
            expr->getLocStart())
            << t.getUnqualifiedType() << expr->getSourceRange();
    } else if (containsXInterfaceSubclass(t)) {
        report(
            DiagnosticsEngine::Warning,
            ("Temporary object of css::uno::XInterface subclass %0 being"
             " directly stack managed, should be managed via"
             " css::uno::Reference"),
            expr->getLocStart())
            << t.getUnqualifiedType() << expr->getSourceRange();
    }
    return true;
}

bool RefCounting::VisitFieldDecl(const FieldDecl * fieldDecl) {
    if (ignoreLocation(fieldDecl)) {
        return true;
    }
    if (fieldDecl->isBitField()) {
        return true;
    }

    // check for dodgy code managing ref-counted stuff with shared_ptr or unique_ptr or similar stuff
    QualType firstTemplateParamType;
    if (auto recordType = fieldDecl->getType()->getUnqualifiedDesugaredType()->getAs<RecordType>()) {
        auto const tc = loplugin::TypeCheck(fieldDecl->getType());
        if (tc.Class("unique_ptr").StdNamespace()
            || tc.Class("shared_ptr").StdNamespace()
            || tc.Class("intrusive_ptr").Namespace("boost").GlobalNamespace())
        {
            auto templateDecl = dyn_cast<ClassTemplateSpecializationDecl>(recordType->getDecl());
            if (templateDecl && templateDecl->getTemplateArgs().size() > 0)
                firstTemplateParamType = templateDecl->getTemplateArgs()[0].getAsType();
        }
    }

    if (containsSvRefBaseSubclass(fieldDecl->getType().getTypePtr())) {
        report(
            DiagnosticsEngine::Warning,
            "SvRefBase subclass %0 being directly heap managed, should be managed via tools::SvRef, "
            ", parent is %1",
            fieldDecl->getLocation())
            << fieldDecl->getType()
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    if (!firstTemplateParamType.isNull() && containsSvRefBaseSubclass(firstTemplateParamType.getTypePtr()))
    {
        report(
            DiagnosticsEngine::Warning,
            "SvRefBase subclass %0 being managed via smart pointer, should be managed via tools::SvRef, "
            "parent is %1",
            fieldDecl->getLocation())
            << firstTemplateParamType
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    if (containsSalhelperReferenceObjectSubclass(fieldDecl->getType().getTypePtr())) {
        report(
            DiagnosticsEngine::Warning,
            "salhelper::SimpleReferenceObject subclass %0 being directly heap managed, should be managed via rtl::Reference, "
            "parent is %1",
            fieldDecl->getLocation())
            << fieldDecl->getType()
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    if (!firstTemplateParamType.isNull() && containsSalhelperReferenceObjectSubclass(firstTemplateParamType.getTypePtr()))
    {
        report(
            DiagnosticsEngine::Warning,
            "salhelper::SimpleReferenceObject subclass %0 being managed via smart pointer, should be managed via rtl::Reference, "
            "parent is %1",
            fieldDecl->getLocation())
            << firstTemplateParamType
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    auto const dc = loplugin::DeclCheck(fieldDecl->getParent());
    if ( (dc.Class("BaseReference").Namespace("uno").Namespace("star")
          .Namespace("sun").Namespace("com").GlobalNamespace())
         || (dc.Union("element_alias").Namespace("detail").Namespace("cppu")
             .GlobalNamespace())
         // this is playing some kind of game to avoid circular references
         || (dc.Class("ResultSetDataSupplier").Namespace("ucbhelper")
             .GlobalNamespace()))
    {
        return true;
    }

    if (containsXInterfaceSubclass(fieldDecl->getType())) {
        report(
            DiagnosticsEngine::Warning,
            "XInterface subclass %0 being directly heap managed, should be managed via uno::Reference, "
            "parent is %1",
            fieldDecl->getLocation())
            << fieldDecl->getType()
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    if (!firstTemplateParamType.isNull() && containsXInterfaceSubclass(firstTemplateParamType))
    {
        report(
            DiagnosticsEngine::Warning,
            "XInterface subclass %0 being managed via smart pointer, should be managed via uno::Reference, "
            "parent is %1",
            fieldDecl->getLocation())
            << firstTemplateParamType
            << fieldDecl->getParent()
            << fieldDecl->getSourceRange();
    }

    checkUnoReference(
        fieldDecl->getType(), fieldDecl,
        fieldDecl->getParent(), "field");

    return true;
}


bool RefCounting::VisitVarDecl(const VarDecl * varDecl) {
    if (ignoreLocation(varDecl)) {
        return true;
    }
    if (!isa<ParmVarDecl>(varDecl)) {
        if (containsSvRefBaseSubclass(varDecl->getType().getTypePtr())) {
            report(
                DiagnosticsEngine::Warning,
                "SvRefBase subclass being directly stack managed, should be managed via tools::SvRef, "
                + varDecl->getType().getAsString(),
                varDecl->getLocation())
              << varDecl->getSourceRange();
        }
        if (containsSalhelperReferenceObjectSubclass(varDecl->getType().getTypePtr())) {
            StringRef name { compiler.getSourceManager().getFilename(compiler.getSourceManager().getSpellingLoc(varDecl->getLocation())) };
            // this is playing games that it believes is safe
            if (loplugin::isSamePathname(name, SRCDIR "/stoc/source/security/permissions.cxx"))
                return true;
            report(
                DiagnosticsEngine::Warning,
                "salhelper::SimpleReferenceObject subclass being directly stack managed, should be managed via rtl::Reference, "
                + varDecl->getType().getAsString(),
                varDecl->getLocation())
              << varDecl->getSourceRange();
        }
        if (containsXInterfaceSubclass(varDecl->getType())) {
            report(
                DiagnosticsEngine::Warning,
                "XInterface subclass being directly stack managed, should be managed via uno::Reference, "
                + varDecl->getType().getAsString(),
                varDecl->getLocation())
              << varDecl->getSourceRange();
        }
    }
    checkUnoReference(varDecl->getType(), varDecl, nullptr, "var");
    return true;
}

bool RefCounting::VisitFunctionDecl(const FunctionDecl * functionDecl) {
    if (ignoreLocation(functionDecl)) {
        return true;
    }
    // only consider base declarations, not overridden ones, or we warn on methods that
    // are overriding stuff from external libraries
    const CXXMethodDecl * methodDecl = dyn_cast<CXXMethodDecl>(functionDecl);
    if (methodDecl && methodDecl->size_overridden_methods() > 0) {
            return true;
    }
    checkUnoReference(compat::getReturnType(*functionDecl), functionDecl, nullptr, "return");
    return true;
}

loplugin::Plugin::Registration< RefCounting > X("refcounting");

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */