//===--- DeclCXX.cpp - C++ Declaration AST Node Implementation ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the C++ related Decl classes.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Expr.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/IdentifierTable.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// Decl Allocation/Deallocation Method Implementations
//===----------------------------------------------------------------------===//
CXXRecordDecl::DefinitionData::DefinitionData(CXXRecordDecl *D)
: UserDeclaredConstructor(false), UserDeclaredCopyConstructor(false),
UserDeclaredCopyAssignment(false), UserDeclaredDestructor(false),
Aggregate(true), PlainOldData(true), Empty(true), Polymorphic(false),
Abstract(false), HasTrivialConstructor(true),
HasTrivialCopyConstructor(true), HasTrivialCopyAssignment(true),
HasTrivialDestructor(true), ComputedVisibleConversions(false),
Bases(0), NumBases(0), VBases(0), NumVBases(0),
Definition(D) {
}
CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC,
SourceLocation L, IdentifierInfo *Id,
CXXRecordDecl *PrevDecl,
SourceLocation TKL)
: RecordDecl(K, TK, DC, L, Id, PrevDecl, TKL),
DefinitionData(PrevDecl ? PrevDecl->DefinitionData : 0),
TemplateOrInstantiation() { }
CXXRecordDecl *CXXRecordDecl::Create(ASTContext &C, TagKind TK, DeclContext *DC,
SourceLocation L, IdentifierInfo *Id,
SourceLocation TKL,
CXXRecordDecl* PrevDecl,
bool DelayTypeCreation) {
CXXRecordDecl* R = new (C) CXXRecordDecl(CXXRecord, TK, DC, L, Id,
PrevDecl, TKL);
// FIXME: DelayTypeCreation seems like such a hack
if (!DelayTypeCreation)
C.getTypeDeclType(R, PrevDecl);
return R;
}
CXXRecordDecl::~CXXRecordDecl() {
}
void CXXRecordDecl::Destroy(ASTContext &C) {
if (data().Definition == this) {
C.Deallocate(data().Bases);
C.Deallocate(data().VBases);
C.Deallocate(&data());
}
this->RecordDecl::Destroy(C);
}
void
CXXRecordDecl::setBases(CXXBaseSpecifier const * const *Bases,
unsigned NumBases) {
ASTContext &C = getASTContext();
// C++ [dcl.init.aggr]p1:
// An aggregate is an array or a class (clause 9) with [...]
// no base classes [...].
data().Aggregate = false;
if (data().Bases)
C.Deallocate(data().Bases);
int vbaseCount = 0;
llvm::SmallVector<const CXXBaseSpecifier*, 8> UniqueVbases;
bool hasDirectVirtualBase = false;
data().Bases = new(C) CXXBaseSpecifier [NumBases];
data().NumBases = NumBases;
for (unsigned i = 0; i < NumBases; ++i) {
data().Bases[i] = *Bases[i];
// Keep track of inherited vbases for this base class.
const CXXBaseSpecifier *Base = Bases[i];
QualType BaseType = Base->getType();
// Skip dependent types; we can't do any checking on them now.
if (BaseType->isDependentType())
continue;
CXXRecordDecl *BaseClassDecl
= cast<CXXRecordDecl>(BaseType->getAs<RecordType>()->getDecl());
if (Base->isVirtual())
hasDirectVirtualBase = true;
for (CXXRecordDecl::base_class_iterator VBase =
BaseClassDecl->vbases_begin(),
E = BaseClassDecl->vbases_end(); VBase != E; ++VBase) {
// Add this vbase to the array of vbases for current class if it is
// not already in the list.
// FIXME. Note that we do a linear search as number of such classes are
// very few.
int i;
for (i = 0; i < vbaseCount; ++i)
if (UniqueVbases[i]->getType() == VBase->getType())
break;
if (i == vbaseCount) {
UniqueVbases.push_back(VBase);
++vbaseCount;
}
}
}
if (hasDirectVirtualBase) {
// Iterate one more time through the direct bases and add the virtual
// base to the list of vritual bases for current class.
for (unsigned i = 0; i < NumBases; ++i) {
const CXXBaseSpecifier *VBase = Bases[i];
if (!VBase->isVirtual())
continue;
int j;
for (j = 0; j < vbaseCount; ++j)
if (UniqueVbases[j]->getType() == VBase->getType())
break;
if (j == vbaseCount) {
UniqueVbases.push_back(VBase);
++vbaseCount;
}
}
}
if (vbaseCount > 0) {
// build AST for inhireted, direct or indirect, virtual bases.
data().VBases = new (C) CXXBaseSpecifier [vbaseCount];
data().NumVBases = vbaseCount;
for (int i = 0; i < vbaseCount; i++) {
QualType QT = UniqueVbases[i]->getType();
// Skip dependent types; we can't do any checking on them now.
if (QT->isDependentType())
continue;
CXXRecordDecl *VBaseClassDecl
= cast<CXXRecordDecl>(QT->getAs<RecordType>()->getDecl());
data().VBases[i] =
CXXBaseSpecifier(VBaseClassDecl->getSourceRange(), true,
VBaseClassDecl->getTagKind() == RecordDecl::TK_class,
UniqueVbases[i]->getAccessSpecifier(), QT);
}
}
}
/// Callback function for CXXRecordDecl::forallBases that acknowledges
/// that it saw a base class.
static bool SawBase(const CXXRecordDecl *, void *) {
return true;
}
bool CXXRecordDecl::hasAnyDependentBases() const {
if (!isDependentContext())
return false;
return !forallBases(SawBase, 0);
}
bool CXXRecordDecl::hasConstCopyConstructor(ASTContext &Context) const {
return getCopyConstructor(Context, Qualifiers::Const) != 0;
}
CXXConstructorDecl *CXXRecordDecl::getCopyConstructor(ASTContext &Context,
unsigned TypeQuals) const{
QualType ClassType
= Context.getTypeDeclType(const_cast<CXXRecordDecl*>(this));
DeclarationName ConstructorName
= Context.DeclarationNames.getCXXConstructorName(
Context.getCanonicalType(ClassType));
unsigned FoundTQs;
DeclContext::lookup_const_iterator Con, ConEnd;
for (llvm::tie(Con, ConEnd) = this->lookup(ConstructorName);
Con != ConEnd; ++Con) {
// C++ [class.copy]p2:
// A non-template constructor for class X is a copy constructor if [...]
if (isa<FunctionTemplateDecl>(*Con))
continue;
if (cast<CXXConstructorDecl>(*Con)->isCopyConstructor(FoundTQs)) {
if (((TypeQuals & Qualifiers::Const) == (FoundTQs & Qualifiers::Const)) ||
(!(TypeQuals & Qualifiers::Const) && (FoundTQs & Qualifiers::Const)))
return cast<CXXConstructorDecl>(*Con);
}
}
return 0;
}
bool CXXRecordDecl::hasConstCopyAssignment(ASTContext &Context,
const CXXMethodDecl *& MD) const {
QualType ClassType = Context.getCanonicalType(Context.getTypeDeclType(
const_cast<CXXRecordDecl*>(this)));
DeclarationName OpName =Context.DeclarationNames.getCXXOperatorName(OO_Equal);
DeclContext::lookup_const_iterator Op, OpEnd;
for (llvm::tie(Op, OpEnd) = this->lookup(OpName);
Op != OpEnd; ++Op) {
// C++ [class.copy]p9:
// A user-declared copy assignment operator is a non-static non-template
// member function of class X with exactly one parameter of type X, X&,
// const X&, volatile X& or const volatile X&.
const CXXMethodDecl* Method = dyn_cast<CXXMethodDecl>(*Op);
if (!Method)
continue;
if (Method->isStatic())
continue;
if (Method->getPrimaryTemplate())
continue;
const FunctionProtoType *FnType =
Method->getType()->getAs<FunctionProtoType>();
assert(FnType && "Overloaded operator has no prototype.");
// Don't assert on this; an invalid decl might have been left in the AST.
if (FnType->getNumArgs() != 1 || FnType->isVariadic())
continue;
bool AcceptsConst = true;
QualType ArgType = FnType->getArgType(0);
if (const LValueReferenceType *Ref = ArgType->getAs<LValueReferenceType>()) {
ArgType = Ref->getPointeeType();
// Is it a non-const lvalue reference?
if (!ArgType.isConstQualified())
AcceptsConst = false;
}
if (!Context.hasSameUnqualifiedType(ArgType, ClassType))
continue;
MD = Method;
// We have a single argument of type cv X or cv X&, i.e. we've found the
// copy assignment operator. Return whether it accepts const arguments.
return AcceptsConst;
}
assert(isInvalidDecl() &&
"No copy assignment operator declared in valid code.");
return false;
}
void
CXXRecordDecl::addedConstructor(ASTContext &Context,
CXXConstructorDecl *ConDecl) {
assert(!ConDecl->isImplicit() && "addedConstructor - not for implicit decl");
// Note that we have a user-declared constructor.
data().UserDeclaredConstructor = true;
// C++ [dcl.init.aggr]p1:
// An aggregate is an array or a class (clause 9) with no
// user-declared constructors (12.1) [...].
data().Aggregate = false;
// C++ [class]p4:
// A POD-struct is an aggregate class [...]
data().PlainOldData = false;
// C++ [class.ctor]p5:
// A constructor is trivial if it is an implicitly-declared default
// constructor.
// FIXME: C++0x: don't do this for "= default" default constructors.
data().HasTrivialConstructor = false;
// Note when we have a user-declared copy constructor, which will
// suppress the implicit declaration of a copy constructor.
if (ConDecl->isCopyConstructor()) {
data().UserDeclaredCopyConstructor = true;
// C++ [class.copy]p6:
// A copy constructor is trivial if it is implicitly declared.
// FIXME: C++0x: don't do this for "= default" copy constructors.
data().HasTrivialCopyConstructor = false;
}
}
void CXXRecordDecl::addedAssignmentOperator(ASTContext &Context,
CXXMethodDecl *OpDecl) {
// We're interested specifically in copy assignment operators.
const FunctionProtoType *FnType = OpDecl->getType()->getAs<FunctionProtoType>();
assert(FnType && "Overloaded operator has no proto function type.");
assert(FnType->getNumArgs() == 1 && !FnType->isVariadic());
// Copy assignment operators must be non-templates.
if (OpDecl->getPrimaryTemplate() || OpDecl->getDescribedFunctionTemplate())
return;
QualType ArgType = FnType->getArgType(0);
if (const LValueReferenceType *Ref = ArgType->getAs<LValueReferenceType>())
ArgType = Ref->getPointeeType();
ArgType = ArgType.getUnqualifiedType();
QualType ClassType = Context.getCanonicalType(Context.getTypeDeclType(
const_cast<CXXRecordDecl*>(this)));
if (!Context.hasSameUnqualifiedType(ClassType, ArgType))
return;
// This is a copy assignment operator.
// Note on the decl that it is a copy assignment operator.
OpDecl->setCopyAssignment(true);
// Suppress the implicit declaration of a copy constructor.
data().UserDeclaredCopyAssignment = true;
// C++ [class.copy]p11:
// A copy assignment operator is trivial if it is implicitly declared.
// FIXME: C++0x: don't do this for "= default" copy operators.
data().HasTrivialCopyAssignment = false;
// C++ [class]p4:
// A POD-struct is an aggregate class that [...] has no user-defined copy
// assignment operator [...].
data().PlainOldData = false;
}
void
CXXRecordDecl::collectConversionFunctions(
llvm::SmallPtrSet<CanQualType, 8>& ConversionsTypeSet) const
{
const UnresolvedSetImpl *Cs = getConversionFunctions();
for (UnresolvedSetImpl::iterator I = Cs->begin(), E = Cs->end();
I != E; ++I) {
NamedDecl *TopConv = *I;
CanQualType TConvType;
if (FunctionTemplateDecl *TConversionTemplate =
dyn_cast<FunctionTemplateDecl>(TopConv))
TConvType =
getASTContext().getCanonicalType(
TConversionTemplate->getTemplatedDecl()->getResultType());
else
TConvType =
getASTContext().getCanonicalType(
cast<CXXConversionDecl>(TopConv)->getConversionType());
ConversionsTypeSet.insert(TConvType);
}
}
/// getNestedVisibleConversionFunctions - imports unique conversion
/// functions from base classes into the visible conversion function
/// list of the class 'RD'. This is a private helper method.
/// TopConversionsTypeSet is the set of conversion functions of the class
/// we are interested in. HiddenConversionTypes is set of conversion functions
/// of the immediate derived class which hides the conversion functions found
/// in current class.
void
CXXRecordDecl::getNestedVisibleConversionFunctions(CXXRecordDecl *RD,
const llvm::SmallPtrSet<CanQualType, 8> &TopConversionsTypeSet,
const llvm::SmallPtrSet<CanQualType, 8> &HiddenConversionTypes)
{
bool inTopClass = (RD == this);
QualType ClassType = getASTContext().getTypeDeclType(this);
if (const RecordType *Record = ClassType->getAs<RecordType>()) {
const UnresolvedSetImpl *Cs
= cast<CXXRecordDecl>(Record->getDecl())->getConversionFunctions();
for (UnresolvedSetImpl::iterator I = Cs->begin(), E = Cs->end();
I != E; ++I) {
NamedDecl *Conv = *I;
// Only those conversions not exact match of conversions in current
// class are candidateconversion routines.
CanQualType ConvType;
if (FunctionTemplateDecl *ConversionTemplate =
dyn_cast<FunctionTemplateDecl>(Conv))
ConvType =
getASTContext().getCanonicalType(
ConversionTemplate->getTemplatedDecl()->getResultType());
else
ConvType =
getASTContext().getCanonicalType(
cast<CXXConversionDecl>(Conv)->getConversionType());
// We only add conversion functions found in the base class if they
// are not hidden by those found in HiddenConversionTypes which are
// the conversion functions in its derived class.
if (inTopClass ||
(!TopConversionsTypeSet.count(ConvType) &&
!HiddenConversionTypes.count(ConvType)) ) {
if (FunctionTemplateDecl *ConversionTemplate =
dyn_cast<FunctionTemplateDecl>(Conv))
RD->addVisibleConversionFunction(ConversionTemplate);
else
RD->addVisibleConversionFunction(cast<CXXConversionDecl>(Conv));
}
}
}
if (getNumBases() == 0 && getNumVBases() == 0)
return;
llvm::SmallPtrSet<CanQualType, 8> ConversionFunctions;
if (!inTopClass)
collectConversionFunctions(ConversionFunctions);
for (CXXRecordDecl::base_class_iterator VBase = vbases_begin(),
E = vbases_end(); VBase != E; ++VBase) {
if (const RecordType *RT = VBase->getType()->getAs<RecordType>()) {
CXXRecordDecl *VBaseClassDecl
= cast<CXXRecordDecl>(RT->getDecl());
VBaseClassDecl->getNestedVisibleConversionFunctions(RD,
TopConversionsTypeSet,
(inTopClass ? TopConversionsTypeSet : ConversionFunctions));
}
}
for (CXXRecordDecl::base_class_iterator Base = bases_begin(),
E = bases_end(); Base != E; ++Base) {
if (Base->isVirtual())
continue;
if (const RecordType *RT = Base->getType()->getAs<RecordType>()) {
CXXRecordDecl *BaseClassDecl
= cast<CXXRecordDecl>(RT->getDecl());
BaseClassDecl->getNestedVisibleConversionFunctions(RD,
TopConversionsTypeSet,
(inTopClass ? TopConversionsTypeSet : ConversionFunctions));
}
}
}
/// getVisibleConversionFunctions - get all conversion functions visible
/// in current class; including conversion function templates.
const UnresolvedSetImpl *CXXRecordDecl::getVisibleConversionFunctions() {
// If root class, all conversions are visible.
if (bases_begin() == bases_end())
return &data().Conversions;
// If visible conversion list is already evaluated, return it.
if (data().ComputedVisibleConversions)
return &data().VisibleConversions;
llvm::SmallPtrSet<CanQualType, 8> TopConversionsTypeSet;
collectConversionFunctions(TopConversionsTypeSet);
getNestedVisibleConversionFunctions(this, TopConversionsTypeSet,
TopConversionsTypeSet);
data().ComputedVisibleConversions = true;
return &data().VisibleConversions;
}
void CXXRecordDecl::addVisibleConversionFunction(
CXXConversionDecl *ConvDecl) {
assert(!ConvDecl->getDescribedFunctionTemplate() &&
"Conversion function templates should cast to FunctionTemplateDecl.");
data().VisibleConversions.addDecl(ConvDecl);
}
void CXXRecordDecl::addVisibleConversionFunction(
FunctionTemplateDecl *ConvDecl) {
assert(isa<CXXConversionDecl>(ConvDecl->getTemplatedDecl()) &&
"Function template is not a conversion function template");
data().VisibleConversions.addDecl(ConvDecl);
}
void CXXRecordDecl::addConversionFunction(CXXConversionDecl *ConvDecl) {
assert(!ConvDecl->getDescribedFunctionTemplate() &&
"Conversion function templates should cast to FunctionTemplateDecl.");
data().Conversions.addDecl(ConvDecl);
}
void CXXRecordDecl::addConversionFunction(FunctionTemplateDecl *ConvDecl) {
assert(isa<CXXConversionDecl>(ConvDecl->getTemplatedDecl()) &&
"Function template is not a conversion function template");
data().Conversions.addDecl(ConvDecl);
}
void CXXRecordDecl::setMethodAsVirtual(FunctionDecl *Method) {
Method->setVirtualAsWritten(true);
setAggregate(false);
setPOD(false);
setEmpty(false);
setPolymorphic(true);
setHasTrivialConstructor(false);
setHasTrivialCopyConstructor(false);
setHasTrivialCopyAssignment(false);
}
CXXRecordDecl *CXXRecordDecl::getInstantiatedFromMemberClass() const {
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
return cast<CXXRecordDecl>(MSInfo->getInstantiatedFrom());
return 0;
}
MemberSpecializationInfo *CXXRecordDecl::getMemberSpecializationInfo() const {
return TemplateOrInstantiation.dyn_cast<MemberSpecializationInfo *>();
}
void
CXXRecordDecl::setInstantiationOfMemberClass(CXXRecordDecl *RD,
TemplateSpecializationKind TSK) {
assert(TemplateOrInstantiation.isNull() &&
"Previous template or instantiation?");
assert(!isa<ClassTemplateSpecializationDecl>(this));
TemplateOrInstantiation
= new (getASTContext()) MemberSpecializationInfo(RD, TSK);
}
TemplateSpecializationKind CXXRecordDecl::getTemplateSpecializationKind() const{
if (const ClassTemplateSpecializationDecl *Spec
= dyn_cast<ClassTemplateSpecializationDecl>(this))
return Spec->getSpecializationKind();
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo())
return MSInfo->getTemplateSpecializationKind();
return TSK_Undeclared;
}
void
CXXRecordDecl::setTemplateSpecializationKind(TemplateSpecializationKind TSK) {
if (ClassTemplateSpecializationDecl *Spec
= dyn_cast<ClassTemplateSpecializationDecl>(this)) {
Spec->setSpecializationKind(TSK);
return;
}
if (MemberSpecializationInfo *MSInfo = getMemberSpecializationInfo()) {
MSInfo->setTemplateSpecializationKind(TSK);
return;
}
assert(false && "Not a class template or member class specialization");
}
CXXConstructorDecl *
CXXRecordDecl::getDefaultConstructor(ASTContext &Context) {
QualType ClassType = Context.getTypeDeclType(this);
DeclarationName ConstructorName
= Context.DeclarationNames.getCXXConstructorName(
Context.getCanonicalType(ClassType.getUnqualifiedType()));
DeclContext::lookup_const_iterator Con, ConEnd;
for (llvm::tie(Con, ConEnd) = lookup(ConstructorName);
Con != ConEnd; ++Con) {
// FIXME: In C++0x, a constructor template can be a default constructor.
if (isa<FunctionTemplateDecl>(*Con))
continue;
CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(*Con);
if (Constructor->isDefaultConstructor())
return Constructor;
}
return 0;
}
CXXDestructorDecl *CXXRecordDecl::getDestructor(ASTContext &Context) const {
QualType ClassType = Context.getTypeDeclType(this);
DeclarationName Name
= Context.DeclarationNames.getCXXDestructorName(
Context.getCanonicalType(ClassType));
DeclContext::lookup_const_iterator I, E;
llvm::tie(I, E) = lookup(Name);
assert(I != E && "Did not find a destructor!");
CXXDestructorDecl *Dtor = cast<CXXDestructorDecl>(*I);
assert(++I == E && "Found more than one destructor!");
return Dtor;
}
CXXMethodDecl *
CXXMethodDecl::Create(ASTContext &C, CXXRecordDecl *RD,
SourceLocation L, DeclarationName N,
QualType T, TypeSourceInfo *TInfo,
bool isStatic, bool isInline) {
return new (C) CXXMethodDecl(CXXMethod, RD, L, N, T, TInfo,
isStatic, isInline);
}
bool CXXMethodDecl::isUsualDeallocationFunction() const {
if (getOverloadedOperator() != OO_Delete &&
getOverloadedOperator() != OO_Array_Delete)
return false;
// C++ [basic.stc.dynamic.deallocation]p2:
// A template instance is never a usual deallocation function,
// regardless of its signature.
if (getPrimaryTemplate())
return false;
// C++ [basic.stc.dynamic.deallocation]p2:
// If a class T has a member deallocation function named operator delete
// with exactly one parameter, then that function is a usual (non-placement)
// deallocation function. [...]
if (getNumParams() == 1)
return true;
// C++ [basic.stc.dynamic.deallocation]p2:
// [...] If class T does not declare such an operator delete but does
// declare a member deallocation function named operator delete with
// exactly two parameters, the second of which has type std::size_t (18.1),
// then this function is a usual deallocation function.
ASTContext &Context = getASTContext();
if (getNumParams() != 2 ||
!Context.hasSameUnqualifiedType(getParamDecl(1)->getType(),
Context.getSizeType()))
return false;
// This function is a usual deallocation function if there are no
// single-parameter deallocation functions of the same kind.
for (DeclContext::lookup_const_result R = getDeclContext()->lookup(getDeclName());
R.first != R.second; ++R.first) {
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*R.first))
if (FD->getNumParams() == 1)
return false;
}
return true;
}
void CXXMethodDecl::addOverriddenMethod(const CXXMethodDecl *MD) {
assert(MD->isCanonicalDecl() && "Method is not canonical!");
assert(!MD->getParent()->isDependentContext() &&
"Can't add an overridden method to a class template!");
getASTContext().addOverriddenMethod(this, MD);
}
CXXMethodDecl::method_iterator CXXMethodDecl::begin_overridden_methods() const {
return getASTContext().overridden_methods_begin(this);
}
CXXMethodDecl::method_iterator CXXMethodDecl::end_overridden_methods() const {
return getASTContext().overridden_methods_end(this);
}
QualType CXXMethodDecl::getThisType(ASTContext &C) const {
// C++ 9.3.2p1: The type of this in a member function of a class X is X*.
// If the member function is declared const, the type of this is const X*,
// if the member function is declared volatile, the type of this is
// volatile X*, and if the member function is declared const volatile,
// the type of this is const volatile X*.
assert(isInstance() && "No 'this' for static methods!");
QualType ClassTy = C.getTypeDeclType(getParent());
// Aesthetically we prefer not to synthesize a type as the
// InjectedClassNameType of a template pattern: injected class names
// are printed without template arguments, which might
// surprise/confuse/distract our poor users if they didn't
// explicitly write one.
if (isa<InjectedClassNameType>(ClassTy))
ClassTy = cast<InjectedClassNameType>(ClassTy)->getUnderlyingType();
ClassTy = C.getQualifiedType(ClassTy,
Qualifiers::fromCVRMask(getTypeQualifiers()));
return C.getPointerType(ClassTy);
}
bool CXXMethodDecl::hasInlineBody() const {
// If this function is a template instantiation, look at the template from
// which it was instantiated.
const FunctionDecl *CheckFn = getTemplateInstantiationPattern();
if (!CheckFn)
CheckFn = this;
const FunctionDecl *fn;
return CheckFn->getBody(fn) && !fn->isOutOfLine();
}
CXXBaseOrMemberInitializer::
CXXBaseOrMemberInitializer(ASTContext &Context,
TypeSourceInfo *TInfo,
SourceLocation L, Expr *Init, SourceLocation R)
: BaseOrMember(TInfo), Init(Init), AnonUnionMember(0),
LParenLoc(L), RParenLoc(R)
{
}
CXXBaseOrMemberInitializer::
CXXBaseOrMemberInitializer(ASTContext &Context,
FieldDecl *Member, SourceLocation MemberLoc,
SourceLocation L, Expr *Init, SourceLocation R)
: BaseOrMember(Member), MemberLocation(MemberLoc), Init(Init),
AnonUnionMember(0), LParenLoc(L), RParenLoc(R)
{
}
void CXXBaseOrMemberInitializer::Destroy(ASTContext &Context) {
if (Init)
Init->Destroy(Context);
this->~CXXBaseOrMemberInitializer();
}
TypeLoc CXXBaseOrMemberInitializer::getBaseClassLoc() const {
if (isBaseInitializer())
return BaseOrMember.get<TypeSourceInfo*>()->getTypeLoc();
else
return TypeLoc();
}
Type *CXXBaseOrMemberInitializer::getBaseClass() {
if (isBaseInitializer())
return BaseOrMember.get<TypeSourceInfo*>()->getType().getTypePtr();
else
return 0;
}
const Type *CXXBaseOrMemberInitializer::getBaseClass() const {
if (isBaseInitializer())
return BaseOrMember.get<TypeSourceInfo*>()->getType().getTypePtr();
else
return 0;
}
SourceLocation CXXBaseOrMemberInitializer::getSourceLocation() const {
if (isMemberInitializer())
return getMemberLocation();
return getBaseClassLoc().getSourceRange().getBegin();
}
SourceRange CXXBaseOrMemberInitializer::getSourceRange() const {
return SourceRange(getSourceLocation(), getRParenLoc());
}
CXXConstructorDecl *
CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
SourceLocation L, DeclarationName N,
QualType T, TypeSourceInfo *TInfo,
bool isExplicit,
bool isInline, bool isImplicitlyDeclared) {
assert(N.getNameKind() == DeclarationName::CXXConstructorName &&
"Name must refer to a constructor");
return new (C) CXXConstructorDecl(RD, L, N, T, TInfo, isExplicit, isInline,
isImplicitlyDeclared);
}
bool CXXConstructorDecl::isDefaultConstructor() const {
// C++ [class.ctor]p5:
// A default constructor for a class X is a constructor of class
// X that can be called without an argument.
return (getNumParams() == 0) ||
(getNumParams() > 0 && getParamDecl(0)->hasDefaultArg());
}
bool
CXXConstructorDecl::isCopyConstructor(unsigned &TypeQuals) const {
// C++ [class.copy]p2:
// A non-template constructor for class X is a copy constructor
// if its first parameter is of type X&, const X&, volatile X& or
// const volatile X&, and either there are no other parameters
// or else all other parameters have default arguments (8.3.6).
if ((getNumParams() < 1) ||
(getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
(getPrimaryTemplate() != 0) ||
(getDescribedFunctionTemplate() != 0))
return false;
const ParmVarDecl *Param = getParamDecl(0);
// Do we have a reference type? Rvalue references don't count.
const LValueReferenceType *ParamRefType =
Param->getType()->getAs<LValueReferenceType>();
if (!ParamRefType)
return false;
// Is it a reference to our class type?
ASTContext &Context = getASTContext();
CanQualType PointeeType
= Context.getCanonicalType(ParamRefType->getPointeeType());
CanQualType ClassTy
= Context.getCanonicalType(Context.getTagDeclType(getParent()));
if (PointeeType.getUnqualifiedType() != ClassTy)
return false;
// FIXME: other qualifiers?
// We have a copy constructor.
TypeQuals = PointeeType.getCVRQualifiers();
return true;
}
bool CXXConstructorDecl::isConvertingConstructor(bool AllowExplicit) const {
// C++ [class.conv.ctor]p1:
// A constructor declared without the function-specifier explicit
// that can be called with a single parameter specifies a
// conversion from the type of its first parameter to the type of
// its class. Such a constructor is called a converting
// constructor.
if (isExplicit() && !AllowExplicit)
return false;
return (getNumParams() == 0 &&
getType()->getAs<FunctionProtoType>()->isVariadic()) ||
(getNumParams() == 1) ||
(getNumParams() > 1 && getParamDecl(1)->hasDefaultArg());
}
bool CXXConstructorDecl::isCopyConstructorLikeSpecialization() const {
if ((getNumParams() < 1) ||
(getNumParams() > 1 && !getParamDecl(1)->hasDefaultArg()) ||
(getPrimaryTemplate() == 0) ||
(getDescribedFunctionTemplate() != 0))
return false;
const ParmVarDecl *Param = getParamDecl(0);
ASTContext &Context = getASTContext();
CanQualType ParamType = Context.getCanonicalType(Param->getType());
// Strip off the lvalue reference, if any.
if (CanQual<LValueReferenceType> ParamRefType
= ParamType->getAs<LValueReferenceType>())
ParamType = ParamRefType->getPointeeType();
// Is it the same as our our class type?
CanQualType ClassTy
= Context.getCanonicalType(Context.getTagDeclType(getParent()));
if (ParamType.getUnqualifiedType() != ClassTy)
return false;
return true;
}
CXXDestructorDecl *
CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
SourceLocation L, DeclarationName N,
QualType T, bool isInline,
bool isImplicitlyDeclared) {
assert(N.getNameKind() == DeclarationName::CXXDestructorName &&
"Name must refer to a destructor");
return new (C) CXXDestructorDecl(RD, L, N, T, isInline,
isImplicitlyDeclared);
}
void
CXXConstructorDecl::Destroy(ASTContext& C) {
C.Deallocate(BaseOrMemberInitializers);
CXXMethodDecl::Destroy(C);
}
CXXConversionDecl *
CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
SourceLocation L, DeclarationName N,
QualType T, TypeSourceInfo *TInfo,
bool isInline, bool isExplicit) {
assert(N.getNameKind() == DeclarationName::CXXConversionFunctionName &&
"Name must refer to a conversion function");
return new (C) CXXConversionDecl(RD, L, N, T, TInfo, isInline, isExplicit);
}
FriendDecl *FriendDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L,
FriendUnion Friend,
SourceLocation FriendL) {
#ifndef NDEBUG
if (Friend.is<NamedDecl*>()) {
NamedDecl *D = Friend.get<NamedDecl*>();
assert(isa<FunctionDecl>(D) ||
isa<CXXRecordDecl>(D) ||
isa<FunctionTemplateDecl>(D) ||
isa<ClassTemplateDecl>(D));
// As a temporary hack, we permit template instantiation to point
// to the original declaration when instantiating members.
assert(D->getFriendObjectKind() ||
(cast<CXXRecordDecl>(DC)->getTemplateSpecializationKind()));
}
#endif
return new (C) FriendDecl(DC, L, Friend, FriendL);
}
LinkageSpecDecl *LinkageSpecDecl::Create(ASTContext &C,
DeclContext *DC,
SourceLocation L,
LanguageIDs Lang, bool Braces) {
return new (C) LinkageSpecDecl(DC, L, Lang, Braces);
}
UsingDirectiveDecl *UsingDirectiveDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L,
SourceLocation NamespaceLoc,
SourceRange QualifierRange,
NestedNameSpecifier *Qualifier,
SourceLocation IdentLoc,
NamedDecl *Used,
DeclContext *CommonAncestor) {
if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used))
Used = NS->getOriginalNamespace();
return new (C) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierRange,
Qualifier, IdentLoc, Used, CommonAncestor);
}
NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
if (NamespaceAliasDecl *NA =
dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
return NA->getNamespace();
return cast_or_null<NamespaceDecl>(NominatedNamespace);
}
NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L,
SourceLocation AliasLoc,
IdentifierInfo *Alias,
SourceRange QualifierRange,
NestedNameSpecifier *Qualifier,
SourceLocation IdentLoc,
NamedDecl *Namespace) {
if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
Namespace = NS->getOriginalNamespace();
return new (C) NamespaceAliasDecl(DC, L, AliasLoc, Alias, QualifierRange,
Qualifier, IdentLoc, Namespace);
}
UsingDecl *UsingDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, SourceRange NNR, SourceLocation UL,
NestedNameSpecifier* TargetNNS, DeclarationName Name,
bool IsTypeNameArg) {
return new (C) UsingDecl(DC, L, NNR, UL, TargetNNS, Name, IsTypeNameArg);
}
UnresolvedUsingValueDecl *
UnresolvedUsingValueDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation UsingLoc,
SourceRange TargetNNR,
NestedNameSpecifier *TargetNNS,
SourceLocation TargetNameLoc,
DeclarationName TargetName) {
return new (C) UnresolvedUsingValueDecl(DC, C.DependentTy, UsingLoc,
TargetNNR, TargetNNS,
TargetNameLoc, TargetName);
}
UnresolvedUsingTypenameDecl *
UnresolvedUsingTypenameDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation UsingLoc,
SourceLocation TypenameLoc,
SourceRange TargetNNR,
NestedNameSpecifier *TargetNNS,
SourceLocation TargetNameLoc,
DeclarationName TargetName) {
return new (C) UnresolvedUsingTypenameDecl(DC, UsingLoc, TypenameLoc,
TargetNNR, TargetNNS,
TargetNameLoc,
TargetName.getAsIdentifierInfo());
}
StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, Expr *AssertExpr,
StringLiteral *Message) {
return new (C) StaticAssertDecl(DC, L, AssertExpr, Message);
}
void StaticAssertDecl::Destroy(ASTContext& C) {
AssertExpr->Destroy(C);
Message->Destroy(C);
this->~StaticAssertDecl();
C.Deallocate((void *)this);
}
StaticAssertDecl::~StaticAssertDecl() {
}
static const char *getAccessName(AccessSpecifier AS) {
switch (AS) {
default:
case AS_none:
assert("Invalid access specifier!");
return 0;
case AS_public:
return "public";
case AS_private:
return "private";
case AS_protected:
return "protected";
}
}
const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB,
AccessSpecifier AS) {
return DB << getAccessName(AS);
}