bool ClassTemplateToClass::isValidClassTemplateDecl(ClassTemplateDecl *TmplD)
{
TemplateParameterList *TPList = TmplD->getTemplateParameters();
if (TPList->size() != 1)
return false;
CXXRecordDecl *CXXRD = TmplD->getTemplatedDecl();
CXXRecordDecl *Def = CXXRD->getDefinition();
if (!Def)
return true;
NamedDecl *ND = TPList->getParam(0);
if (dyn_cast<NonTypeTemplateParmDecl>(ND))
return true;
if (isUsedNamedDecl(ND, Def))
return false;
SmallVector<ClassTemplatePartialSpecializationDecl *, 10> PartialDecls;
TmplD->getPartialSpecializations(PartialDecls);
for (SmallVector<ClassTemplatePartialSpecializationDecl *, 10>::iterator
I = PartialDecls.begin(), E = PartialDecls.end(); I != E; ++I) {
if (hasUsedNameDecl(*I))
return false;
}
return true;
}
ValuePrinterInfo::ValuePrinterInfo(Expr* E, ASTContext* Ctx)
: m_Expr(E), m_Context(Ctx), m_Flags(0) {
assert(E && "Expression cannot be null!");
assert(Ctx && "ASTContext cannot be null!");
// 1. Get the flags
const QualType QT = m_Expr->getType();
if (E->isRValue() || QT.isLocalConstQualified() || QT.isConstant(*Ctx)){
m_Flags |= VPI_Const;
}
if (QT->isPointerType()) {
// treat arrary-to-pointer decay as array:
QualType PQT = QT->getPointeeType();
const Type* PTT = PQT.getTypePtr();
if (!PTT || !PTT->isArrayType()) {
m_Flags |= VPI_Ptr;
if (const RecordType* RT = dyn_cast<RecordType>(QT.getTypePtr()))
if (RecordDecl* RD = RT->getDecl()) {
CXXRecordDecl* CRD = dyn_cast<CXXRecordDecl>(RD);
if (CRD && CRD->isPolymorphic())
m_Flags |= VPI_Polymorphic;
}
}
}
}
/// Warns on methods overridden in DerivedDecl with respect to BaseDecl.
/// FIXME: this warns on all overrides outside of the sliced path in case of
/// multiple inheritance.
void SlicingCheck::DiagnoseSlicedOverriddenMethods(
const Expr &Call, const CXXRecordDecl &DerivedDecl,
const CXXRecordDecl &BaseDecl) {
if (DerivedDecl.getCanonicalDecl() == BaseDecl.getCanonicalDecl())
return;
for (const auto &Method : DerivedDecl.methods()) {
// Virtual destructors are OK. We're ignoring constructors since they are
// tagged as overrides.
if (isa<CXXConstructorDecl>(Method) || isa<CXXDestructorDecl>(Method))
continue;
if (Method->size_overridden_methods() > 0) {
diag(Call.getExprLoc(),
"slicing object from type %0 to %1 discards override %2")
<< &DerivedDecl << &BaseDecl << Method;
}
}
// Recursively process bases.
for (const auto &Base : DerivedDecl.bases()) {
if (const auto *BaseRecordType = Base.getType()->getAs<RecordType>()) {
if (const auto *BaseRecord = cast_or_null<CXXRecordDecl>(
BaseRecordType->getDecl()->getDefinition()))
DiagnoseSlicedOverriddenMethods(Call, *BaseRecord, BaseDecl);
}
}
}
void ValuePrinterInfo::Init(clang::QualType Ty) {
assert(!Ty.isNull() && "Type must be valid!");
assert(m_Context && "ASTContext cannot be null!");
assert(sizeof(m_Type) >= sizeof(clang::QualType) && "m_Type too small!");
m_Type = *reinterpret_cast<void**>(&Ty);
// 1. Get the flags
if (Ty.isLocalConstQualified() || Ty.isConstant(*m_Context)){
m_Flags |= VPI_Const;
}
if (Ty->isPointerType()) {
// treat arrary-to-pointer decay as array:
QualType PQT = Ty->getPointeeType();
const Type* PTT = PQT.getTypePtr();
if (!PTT || !PTT->isArrayType()) {
m_Flags |= VPI_Ptr;
if (const RecordType* RT = dyn_cast<RecordType>(Ty.getTypePtr()))
if (RecordDecl* RD = RT->getDecl()) {
CXXRecordDecl* CRD = dyn_cast<CXXRecordDecl>(RD);
if (CRD && CRD->isPolymorphic())
m_Flags |= VPI_Polymorphic;
}
}
}
}
/// \brief Whether this nested name specifier refers to a dependent
/// type or not.
bool NestedNameSpecifier::isDependent() const {
switch (getKind()) {
case Identifier:
// Identifier specifiers always represent dependent types
return true;
case Namespace:
case NamespaceAlias:
case Global:
return false;
case Super: {
CXXRecordDecl *RD = static_cast<CXXRecordDecl *>(Specifier);
for (const auto &Base : RD->bases())
if (Base.getType()->isDependentType())
return true;
return false;
}
case TypeSpec:
case TypeSpecWithTemplate:
return getAsType()->isDependentType();
}
llvm_unreachable("Invalid NNS Kind!");
}
bool Sema::ActOnSuperScopeSpecifier(SourceLocation SuperLoc,
SourceLocation ColonColonLoc,
CXXScopeSpec &SS) {
CXXRecordDecl *RD = nullptr;
for (Scope *S = getCurScope(); S; S = S->getParent()) {
if (S->isFunctionScope()) {
if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(S->getEntity()))
RD = MD->getParent();
break;
}
if (S->isClassScope()) {
RD = cast<CXXRecordDecl>(S->getEntity());
break;
}
}
if (!RD) {
Diag(SuperLoc, diag::err_invalid_super_scope);
return true;
} else if (RD->isLambda()) {
Diag(SuperLoc, diag::err_super_in_lambda_unsupported);
return true;
} else if (RD->getNumBases() == 0) {
Diag(SuperLoc, diag::err_no_base_classes) << RD->getName();
return true;
}
SS.MakeSuper(Context, RD, SuperLoc, ColonColonLoc);
return false;
}
void RecordInfo::walkBases() {
// This traversal is akin to CXXRecordDecl::forallBases()'s,
// but without stepping over dependent bases -- these might also
// have a "GC base name", so are to be included and considered.
SmallVector<const CXXRecordDecl*, 8> queue;
const CXXRecordDecl *base_record = record();
while (true) {
for (const auto& it : base_record->bases()) {
const RecordType *type = it.getType()->getAs<RecordType>();
CXXRecordDecl* base;
if (!type)
base = GetDependentTemplatedDecl(*it.getType());
else {
base = cast_or_null<CXXRecordDecl>(type->getDecl()->getDefinition());
if (base)
queue.push_back(base);
}
if (!base)
continue;
const std::string& name = base->getName();
if (Config::IsGCBase(name)) {
gc_base_names_.push_back(name);
is_gc_derived_ = true;
}
}
if (queue.empty())
break;
base_record = queue.pop_back_val(); // not actually a queue.
}
}
/**
* Return the concrete type in the same extensible class string as me, or
* NULL if it can't be found.
*
* This query only really makes sense for an extensible class.
*/
CXXRecordDecl* getAssociatedConcreteType(CXXRecordDecl* decl) {
// a concrete type is always part of its own extensible class string.
if (isOMRConcreteType(decl))
return decl;
// Only extensible decls have a meaningful concrete class string.
if (isExtensible(decl)) {
int loopCount = 0;
CXXRecordDecl* concrete = mostDerivedType(decl);
trace("==isExtensible: " << decl->getQualifiedNameAsString() << " concrete: " << (concrete ? concrete->getQualifiedNameAsString() : "no concrete found"));
while (concrete) {
if (loopCount++ > 50) {
std::string diagnostic("Found more than 50 layers of classes, likely bug.");
DiagnosticsEngine &diagEngine = Context->getDiagnostics();
unsigned diagID = diagEngine.getCustomDiagID(DiagnosticsEngine::Error, "%0");
diagEngine.Report(decl->getLocation(), diagID) << diagnostic;
exit(EXIT_FAILURE);
}
if (inSameClassString(decl, concrete)) {
trace("=== in same string");
return concrete; //Found the concrete class in the same string.
}
concrete = mostDerivedType(concrete);
if (concrete) trace("==== new concrete " << concrete->getQualifiedNameAsString() << " for " << decl->getQualifiedNameAsString());
}
trace("Didn't find a concrete class for " << decl->getQualifiedNameAsString() << " ... issue diagnostic?")
}
return NULL;
}
void ReduceClassTemplateParameter::removeParameterFromMethods()
{
CXXRecordDecl *CXXRD = TheClassTemplateDecl->getTemplatedDecl();
for (auto I = CXXRD->method_begin(), E = CXXRD->method_end();
I != E; ++I) {
ClassTemplateMethodVisitor V(this, TheParameterIndex);
V.TraverseDecl(*I);
}
}
void ASTConsumerHTML::HandleVTable(CXXRecordDecl *RD, bool DefinitionRequired) {
CXXRecordDecl *decl = RD;
if (decl) {
log << "\n" << static_cast<Decl *> (decl) << " HandleVTable" << "\n";
decl->print(log);
log << "\n";
}
}
void QGetEnv::VisitStmt(clang::Stmt *stmt)
{
// Lets check only in function calls. Otherwise there are too many false positives, it's common
// to implicit cast to bool when checking pointers for validity, like if (ptr)
CXXMemberCallExpr *memberCall = dyn_cast<CXXMemberCallExpr>(stmt);
if (!memberCall)
return;
CXXMethodDecl *method = memberCall->getMethodDecl();
if (!method)
return;
CXXRecordDecl *record = method->getParent();
if (!record || record->getNameAsString() != "QByteArray") {
return;
}
std::vector<CallExpr *> calls = Utils::callListForChain(memberCall);
if (calls.size() != 2)
return;
CallExpr *qgetEnvCall = calls.back();
FunctionDecl *func = qgetEnvCall->getDirectCallee();
if (!func || func->getNameAsString() != "qgetenv")
return;
string methodname = method->getNameAsString();
string errorMsg;
std::string replacement;
if (methodname == "isEmpty") {
errorMsg = "qgetenv().isEmpty() allocates.";
replacement = "qEnvironmentVariableIsEmpty";
} else if (methodname == "isNull") {
errorMsg = "qgetenv().isNull() allocates.";
replacement = "qEnvironmentVariableIsSet";
} else if (methodname == "toInt") {
errorMsg = "qgetenv().toInt() is slow.";
replacement = "qEnvironmentVariableIntValue";
}
if (!errorMsg.empty()) {
std::vector<FixItHint> fixits;
if (isFixitEnabled(FixitAll)) {
const bool success = FixItUtils::transformTwoCallsIntoOne(m_ci, qgetEnvCall, memberCall, replacement, fixits);
if (!success) {
queueManualFixitWarning(memberCall->getLocStart(), FixitAll);
}
}
errorMsg += " Use " + replacement + "() instead";
emitWarning(memberCall->getLocStart(), errorMsg.c_str(), fixits);
}
}
bool
UnnecessaryIncludeFinder::VisitTemplateSpecializationTypeLoc (
TemplateSpecializationTypeLoc typeLoc)
{
CXXRecordDecl* pCXXRecordDecl = typeLoc.getTypePtr()->getAsCXXRecordDecl();
if (pCXXRecordDecl) {
markUsed(pCXXRecordDecl->getLocation(), typeLoc.getTemplateNameLoc());
}
return true;
}
bool CXXRecordDecl::lookupInBases(BaseMatchesCallback BaseMatches,
CXXBasePaths &Paths,
bool LookupInDependent) const {
// If we didn't find anything, report that.
if (!Paths.lookupInBases(getASTContext(), this, BaseMatches,
LookupInDependent))
return false;
// If we're not recording paths or we won't ever find ambiguities,
// we're done.
if (!Paths.isRecordingPaths() || !Paths.isFindingAmbiguities())
return true;
// C++ [class.member.lookup]p6:
// When virtual base classes are used, a hidden declaration can be
// reached along a path through the sub-object lattice that does
// not pass through the hiding declaration. This is not an
// ambiguity. The identical use with nonvirtual base classes is an
// ambiguity; in that case there is no unique instance of the name
// that hides all the others.
//
// FIXME: This is an O(N^2) algorithm, but DPG doesn't see an easy
// way to make it any faster.
Paths.Paths.remove_if([&Paths](const CXXBasePath &Path) {
for (const CXXBasePathElement &PE : Path) {
if (!PE.Base->isVirtual())
continue;
CXXRecordDecl *VBase = nullptr;
if (const RecordType *Record = PE.Base->getType()->getAs<RecordType>())
VBase = cast<CXXRecordDecl>(Record->getDecl());
if (!VBase)
break;
// The declaration(s) we found along this path were found in a
// subobject of a virtual base. Check whether this virtual
// base is a subobject of any other path; if so, then the
// declaration in this path are hidden by that patch.
for (const CXXBasePath &HidingP : Paths) {
CXXRecordDecl *HidingClass = nullptr;
if (const RecordType *Record =
HidingP.back().Base->getType()->getAs<RecordType>())
HidingClass = cast<CXXRecordDecl>(Record->getDecl());
if (!HidingClass)
break;
if (HidingClass->isVirtuallyDerivedFrom(VBase))
return true;
}
}
return false;
});
return true;
}
static void EmitDeclInit(CodeGenFunction &CGF, const VarDecl &D,
llvm::Constant *DeclPtr) {
assert(D.hasGlobalStorage() && "VarDecl must have global storage!");
assert(!D.getType()->isReferenceType() &&
"Should not call EmitDeclInit on a reference!");
CodeGenModule &CGM = CGF.CGM;
ASTContext &Context = CGF.getContext();
const Expr *Init = D.getInit();
QualType T = D.getType();
bool isVolatile = Context.getCanonicalType(T).isVolatileQualified();
if (!CGF.hasAggregateLLVMType(T)) {
llvm::Value *V = CGF.EmitScalarExpr(Init);
CGF.EmitStoreOfScalar(V, DeclPtr, isVolatile, T);
} else if (T->isAnyComplexType()) {
CGF.EmitComplexExprIntoAddr(Init, DeclPtr, isVolatile);
} else {
CGF.EmitAggExpr(Init, DeclPtr, isVolatile);
// Avoid generating destructor(s) for initialized objects.
if (!isa<CXXConstructExpr>(Init))
return;
const ConstantArrayType *Array = Context.getAsConstantArrayType(T);
if (Array)
T = Context.getBaseElementType(Array);
const RecordType *RT = T->getAs<RecordType>();
if (!RT)
return;
CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
if (RD->hasTrivialDestructor())
return;
CXXDestructorDecl *Dtor = RD->getDestructor(Context);
llvm::Constant *DtorFn;
if (Array) {
DtorFn =
CodeGenFunction(CGM).GenerateCXXAggrDestructorHelper(Dtor,
Array,
DeclPtr);
const llvm::Type *Int8PtrTy =
llvm::Type::getInt8PtrTy(CGM.getLLVMContext());
DeclPtr = llvm::Constant::getNullValue(Int8PtrTy);
} else
DtorFn = CGM.GetAddrOfCXXDestructor(Dtor, Dtor_Complete);
CGF.EmitCXXGlobalDtorRegistration(DtorFn, DeclPtr);
}
}
static bool isParentOf(const CXXRecordDecl &Parent,
const CXXRecordDecl &ThisClass) {
if (Parent.getCanonicalDecl() == ThisClass.getCanonicalDecl())
return true;
const CXXRecordDecl *ParentCanonicalDecl = Parent.getCanonicalDecl();
return ThisClass.bases_end() !=
llvm::find_if(ThisClass.bases(), [=](const CXXBaseSpecifier &Base) {
auto *BaseDecl = Base.getType()->getAsCXXRecordDecl();
assert(BaseDecl);
return ParentCanonicalDecl == BaseDecl->getCanonicalDecl();
});
}
/**
* Once the recursive visitor has completed, this routine analyzes the
* MostDerivedTypeMap to find errors in the structure of the OMR classes
*/
void VerifyTypeStructure() {
trace("Starting Structure Verification");
for (std::map<CXXRecordDecl*, bool>::iterator I = Types.begin(), E=Types.end(); I != E; ++I) {
CXXRecordDecl * Type = I->first;
bool extensible = I->second;
trace(Type << " " << extensible << " " << getAssociatedConcreteType(Type));
if (extensible && !getAssociatedConcreteType(Type)) {
trace("xxxx Issue diagnostic because there's no associated concrete type");
continue;
}
if (extensible) { //Extnsible type .
trace("xxxx Verifying " << Type->getQualifiedNameAsString() << " has no non-extensible base classes." );
for (CXXRecordDecl::base_class_iterator BI = Type->bases_begin(), BE = Type->bases_end(); BI != BE; ++BI) {
CXXRecordDecl * base_class = BI->getType()->getAsCXXRecordDecl();
if (base_class
&& !isExtensible(base_class) // Ensure extensible parent.
&& !isOMRRootType(Type)) { // OMR Root type can have non-extensible parents.
//Base is not extensible, but an extensible type reaches it, with no concrete class in the middle.
//Issue diagnostic.
std::string diagnostic("OMR_EXTENSIBLE Type ");
diagnostic += Type->getQualifiedNameAsString();
diagnostic += " derives from ";
diagnostic += base_class->getQualifiedNameAsString();
diagnostic += " that is not marked as OMR_EXTENSIBLE.\n";
DiagnosticsEngine &diagEngine = Context->getDiagnostics();
unsigned diagID = diagEngine.getCustomDiagID(DiagnosticsEngine::Error, "%0");
diagEngine.Report(base_class->getLocation(), diagID) << diagnostic;
}
}
} else {
trace("xxxx Verifying " << Type->getQualifiedNameAsString() << " has no non-extensible base classes." );
for (CXXRecordDecl::base_class_iterator BI = Type->bases_begin(), BE = Type->bases_end(); BI != BE; ++BI) {
CXXRecordDecl * base_class = BI->getType()->getAsCXXRecordDecl();
if (base_class && isExtensible(base_class) && !isOMRConcreteType(base_class)) {
//Base is not extensible, but an extensible type reaches it, with no concrete class in the middle.
//Issue diagnostic.
std::string diagnostic("Type ");
diagnostic += Type->getQualifiedNameAsString();
diagnostic += " derives from ";
diagnostic += base_class->getQualifiedNameAsString();
diagnostic += " that is marked as OMR_EXTENSIBLE.\n";
DiagnosticsEngine &diagEngine = Context->getDiagnostics();
unsigned diagID = diagEngine.getCustomDiagID(DiagnosticsEngine::Error, "%0");
diagEngine.Report(Type->getLocation(), diagID) << diagnostic;
}
}
}
} //each most derived type
}
// A GC mixin is a class that inherits from a GC mixin base and has
// has not yet been "mixed in" with another GC base class.
bool RecordInfo::IsGCMixin() {
if (!IsGCDerived() || base_paths_->begin() == base_paths_->end())
return false;
// Get the last element of the first path.
CXXBasePaths::paths_iterator it = base_paths_->begin();
const CXXBasePathElement& elem = (*it)[it->size() - 1];
CXXRecordDecl* base = elem.Base->getType()->getAsCXXRecordDecl();
// If it is not a mixin base we are done.
if (!Config::IsGCMixinBase(base->getName()))
return false;
// This is a mixin if there are no other paths to GC bases.
return ++it == base_paths_->end();
}
bool RecordInfo::IsGCFinalized() {
if (!IsGCDerived())
return false;
for (CXXBasePaths::paths_iterator it = base_paths_->begin();
it != base_paths_->end();
++it) {
const CXXBasePathElement& elem = (*it)[it->size() - 1];
CXXRecordDecl* base = elem.Base->getType()->getAsCXXRecordDecl();
if (Config::IsGCFinalizedBase(base->getName()))
return true;
}
return false;
}
static CXXRecordDecl *FindDeclaringClass(NamedDecl *D) {
DeclContext *DC = D->getDeclContext();
// This can only happen at top: enum decls only "publish" their
// immediate members.
if (isa<EnumDecl>(DC))
DC = cast<EnumDecl>(DC)->getDeclContext();
CXXRecordDecl *DeclaringClass = cast<CXXRecordDecl>(DC);
while (DeclaringClass->isAnonymousStructOrUnion())
DeclaringClass = cast<CXXRecordDecl>(DeclaringClass->getDeclContext());
return DeclaringClass;
}
void RuleOfTwoSoft::VisitStmt(Stmt *s)
{
CXXOperatorCallExpr *op = dyn_cast<CXXOperatorCallExpr>(s);
if (op) {
FunctionDecl *func = op->getDirectCallee();
if (func && func->getNameAsString() == "operator=") {
CXXMethodDecl *method = dyn_cast<CXXMethodDecl>(func);
if (method && method->getParent()) {
CXXRecordDecl *record = method->getParent();
const bool hasCopyCtor = record->hasNonTrivialCopyConstructor();
const bool hasCopyAssignOp = record->hasNonTrivialCopyAssignment();
if (hasCopyCtor && !hasCopyAssignOp && !isBlacklisted(record)) {
string msg = "Using assign operator but class " + record->getQualifiedNameAsString() + " has copy-ctor but no assign operator";
emitWarning(s->getLocStart(), msg);
}
}
}
} else if (CXXConstructExpr *ctorExpr = dyn_cast<CXXConstructExpr>(s)) {
CXXConstructorDecl *ctorDecl = ctorExpr->getConstructor();
CXXRecordDecl *record = ctorDecl->getParent();
if (ctorDecl->isCopyConstructor() && record) {
const bool hasCopyCtor = record->hasNonTrivialCopyConstructor();
const bool hasCopyAssignOp = record->hasNonTrivialCopyAssignment();
if (!hasCopyCtor && hasCopyAssignOp && !isBlacklisted(record)) {
string msg = "Using copy-ctor but class " + record->getQualifiedNameAsString() + " has a trivial copy-ctor but non trivial assign operator";
emitWarning(s->getLocStart(), msg);
}
}
}
}
/// Determines whether the given friend class template matches
/// anything in the effective context.
static AccessResult MatchesFriend(Sema &S,
const EffectiveContext &EC,
ClassTemplateDecl *Friend) {
AccessResult OnFailure = AR_inaccessible;
// Check whether the friend is the template of a class in the
// context chain.
for (llvm::SmallVectorImpl<CXXRecordDecl*>::const_iterator
I = EC.Records.begin(), E = EC.Records.end(); I != E; ++I) {
CXXRecordDecl *Record = *I;
// Figure out whether the current class has a template:
ClassTemplateDecl *CTD;
// A specialization of the template...
if (isa<ClassTemplateSpecializationDecl>(Record)) {
CTD = cast<ClassTemplateSpecializationDecl>(Record)
->getSpecializedTemplate();
// ... or the template pattern itself.
} else {
CTD = Record->getDescribedClassTemplate();
if (!CTD) continue;
}
// It's a match.
if (Friend == CTD->getCanonicalDecl())
return AR_accessible;
// If the context isn't dependent, it can't be a dependent match.
if (!EC.isDependent())
continue;
// If the template names don't match, it can't be a dependent
// match. This isn't true in C++0x because of template aliases.
if (!S.LangOpts.CPlusPlus0x && CTD->getDeclName() != Friend->getDeclName())
continue;
// If the class's context can't instantiate to the friend's
// context, it can't be a dependent match.
if (!MightInstantiateTo(S, CTD->getDeclContext(),
Friend->getDeclContext()))
continue;
// Otherwise, it's a dependent match.
OnFailure = AR_dependent;
}
return OnFailure;
}
TEST_F(StructuralEquivalenceTest, WrongOrderOfFieldsInClass) {
auto Code = "class X { int a; int b; };";
auto Decls = makeNamedDecls(Code, Code, Lang_CXX, "X");
CXXRecordDecl *RD = FirstDeclMatcher<CXXRecordDecl>().match(
get<1>(Decls), cxxRecordDecl(hasName("X")));
FieldDecl *FD =
FirstDeclMatcher<FieldDecl>().match(get<1>(Decls), fieldDecl(hasName("a")));
// Reorder the FieldDecls
RD->removeDecl(FD);
RD->addDeclInternal(FD);
EXPECT_FALSE(testStructuralMatch(Decls));
}
void FunctionArgsByRef::VisitDecl(Decl *decl)
{
FunctionDecl *functionDecl = dyn_cast<FunctionDecl>(decl);
if (functionDecl == nullptr || !functionDecl->hasBody() || shouldIgnoreFunction(functionDecl->getNameAsString())
|| !functionDecl->isThisDeclarationADefinition()) return;
Stmt *body = functionDecl->getBody();
for (auto it = functionDecl->param_begin(), end = functionDecl->param_end(); it != end; ++it) {
const ParmVarDecl *param = *it;
QualType paramQt = param->getType();
const Type *paramType = paramQt.getTypePtrOrNull();
if (paramType == nullptr || paramType->isDependentType())
continue;
const int size_of_T = m_ci.getASTContext().getTypeSize(paramQt) / 8;
const bool isSmall = size_of_T <= 16; // TODO: What about arm ?
CXXRecordDecl *recordDecl = paramType->getAsCXXRecordDecl();
const bool isUserNonTrivial = recordDecl && (recordDecl->hasUserDeclaredCopyConstructor() || recordDecl->hasUserDeclaredDestructor());
const bool isReference = paramType->isLValueReferenceType();
const bool isConst = paramQt.isConstQualified();
if (recordDecl && shouldIgnoreClass(recordDecl->getQualifiedNameAsString()))
continue;
std::string error;
if (isConst && !isReference) {
if (!isSmall) {
error += warningMsgForSmallType(size_of_T, paramQt.getAsString());
} else if (isUserNonTrivial) {
error += "Missing reference on non-trivial type " + recordDecl->getQualifiedNameAsString();
}
} else if (isConst && isReference && !isUserNonTrivial && isSmall) {
//error += "Don't use by-ref on small trivial type";
} else if (!isConst && !isReference && (!isSmall || isUserNonTrivial)) {
if (Utils::containsNonConstMemberCall(body, param) || Utils::containsCallByRef(body, param))
continue;
if (!isSmall) {
error += warningMsgForSmallType(size_of_T, paramQt.getAsString());
} else if (isUserNonTrivial) {
error += "Missing reference on non-trivial type " + recordDecl->getQualifiedNameAsString();
}
}
if (!error.empty()) {
emitWarning(param->getLocStart(), error.c_str());
}
}
}
void MissingTypeinfo::registerQTypeInfo(ClassTemplateSpecializationDecl *decl)
{
if (decl->getName() == "QTypeInfo") {
auto &args = decl->getTemplateArgs();
if (args.size() != 1)
return;
QualType qt = args[0].getAsType();
const Type *t = qt.getTypePtrOrNull();
CXXRecordDecl *recordDecl = t ? t->getAsCXXRecordDecl() : nullptr;
// llvm::errs() << qt.getAsString() << " foo\n";
if (recordDecl != nullptr) {
m_typeInfos.insert(recordDecl->getQualifiedNameAsString());
}
}
}
void VarCheckVisitor::checkClass(clang::Decl* d)
{
auto loc = getDeclLocation(d);
CXXRecordDecl* c = (CXXRecordDecl*)d;
string name = c->getName();
boost::regex r{CLASS_NAME};
if(!boost::regex_match(name, r)){
lineIssues_.push_back(Issue(loc.first, loc.second,
"Incorrect Class/Struct name",
"Classes and Structures should be named in upper camel case.",
WARNING));
}
}
bool RecordInfo::IsTreeShared() {
if (Config::IsTreeSharedBase(name_))
return true;
if (!IsGCDerived())
return false;
for (CXXBasePaths::paths_iterator it = base_paths_->begin();
it != base_paths_->end();
++it) {
// TreeShared is an immediate base of GCFinalized.
if (it->size() < 2) continue;
const CXXBasePathElement& elem = (*it)[it->size() - 2];
CXXRecordDecl* base = elem.Base->getType()->getAsCXXRecordDecl();
if (Config::IsTreeSharedBase(base->getName()))
return true;
}
return false;
}
void MustOverrideChecker::check(const MatchFinder::MatchResult &Result) {
auto D = Result.Nodes.getNodeAs<CXXRecordDecl>("class");
// Look through all of our immediate bases to find methods that need to be
// overridden
typedef std::vector<CXXMethodDecl *> OverridesVector;
OverridesVector MustOverrides;
for (const auto &Base : D->bases()) {
// The base is either a class (CXXRecordDecl) or it's a templated class...
CXXRecordDecl *Parent = Base.getType()
.getDesugaredType(D->getASTContext())
->getAsCXXRecordDecl();
// The parent might not be resolved to a type yet. In this case, we can't
// do any checking here. For complete correctness, we should visit
// template instantiations, but this case is likely to be rare, so we will
// ignore it until it becomes important.
if (!Parent) {
continue;
}
Parent = Parent->getDefinition();
for (const auto &M : Parent->methods()) {
if (hasCustomAnnotation(M, "moz_must_override"))
MustOverrides.push_back(M);
}
}
for (auto &O : MustOverrides) {
bool Overridden = false;
for (const auto &M : D->methods()) {
// The way that Clang checks if a method M overrides its parent method
// is if the method has the same name but would not overload.
if (getNameChecked(M) == getNameChecked(O) &&
!CI->getSema().IsOverload(M, O, false)) {
Overridden = true;
break;
}
}
if (!Overridden) {
diag(D->getLocation(), "%0 must override %1", DiagnosticIDs::Error)
<< D->getDeclName() << O->getDeclName();
diag(O->getLocation(), "function to override is here",
DiagnosticIDs::Note);
}
}
}
/// Find the current instantiation that associated with the given type.
static CXXRecordDecl *getCurrentInstantiationOf(QualType T,
DeclContext *CurContext) {
if (T.isNull())
return nullptr;
const Type *Ty = T->getCanonicalTypeInternal().getTypePtr();
if (const RecordType *RecordTy = dyn_cast<RecordType>(Ty)) {
CXXRecordDecl *Record = cast<CXXRecordDecl>(RecordTy->getDecl());
if (!Record->isDependentContext() ||
Record->isCurrentInstantiation(CurContext))
return Record;
return nullptr;
} else if (isa<InjectedClassNameType>(Ty))
return cast<InjectedClassNameType>(Ty)->getDecl();
else
return nullptr;
}
bool Utils::hasMember(CXXRecordDecl *record, const string &memberTypeName)
{
if (!record)
return false;
for (auto field : record->fields()) {
field->getParent()->getNameAsString();
QualType qt = field->getType();
const Type *t = qt.getTypePtrOrNull();
if (t && t->getAsCXXRecordDecl()) {
CXXRecordDecl *rec = t->getAsCXXRecordDecl();
if (rec->getNameAsString() == memberTypeName)
return true;
}
}
return false;
}
void CopyablePolymorphic::VisitDecl(clang::Decl *decl)
{
CXXRecordDecl *record = dyn_cast<CXXRecordDecl>(decl);
if (!record || !record->hasDefinition() || record->getDefinition() != record || !record->isPolymorphic())
return;
CXXConstructorDecl *copyCtor = Utils::copyCtor(record);
CXXMethodDecl *copyAssign = Utils::copyAssign(record);
const bool hasCallableCopyCtor = copyCtor && !copyCtor->isDeleted() && copyCtor->getAccess() != clang::AS_private;
const bool hasCallableCopyAssign = copyAssign && !copyAssign->isDeleted() && copyAssign->getAccess() != clang::AS_private;
if (!hasCallableCopyCtor && !hasCallableCopyAssign)
return;
emitWarning(record->getLocStart(), "Polymorphic class is copyable. Potential slicing.");
}