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TypeLoc.h
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TypeLoc.h
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//===- TypeLoc.h - Type Source Info Wrapper ---------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// Defines the clang::TypeLoc interface and its subclasses.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_TYPELOC_H
#define LLVM_CLANG_AST_TYPELOC_H
#include "clang/AST/NestedNameSpecifier.h"
#include "clang/AST/TemplateBase.h"
#include "clang/AST/Type.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/Specifiers.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MathExtras.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstring>
namespace clang {
class Attr;
class ASTContext;
class CXXRecordDecl;
class Expr;
class ObjCInterfaceDecl;
class ObjCProtocolDecl;
class ObjCTypeParamDecl;
class ParmVarDecl;
class TemplateTypeParmDecl;
class UnqualTypeLoc;
class UnresolvedUsingTypenameDecl;
// Predeclare all the type nodes.
#define ABSTRACT_TYPELOC(Class, Base)
#define TYPELOC(Class, Base) \
class Class##TypeLoc;
#include "clang/AST/TypeLocNodes.def"
/// Base wrapper for a particular "section" of type source info.
///
/// A client should use the TypeLoc subclasses through castAs()/getAs()
/// in order to get at the actual information.
class TypeLoc {
protected:
// The correctness of this relies on the property that, for Type *Ty,
// QualType(Ty, 0).getAsOpaquePtr() == (void*) Ty
const void *Ty = nullptr;
void *Data = nullptr;
public:
TypeLoc() = default;
TypeLoc(QualType ty, void *opaqueData)
: Ty(ty.getAsOpaquePtr()), Data(opaqueData) {}
TypeLoc(const Type *ty, void *opaqueData)
: Ty(ty), Data(opaqueData) {}
/// Convert to the specified TypeLoc type, asserting that this TypeLoc
/// is of the desired type.
///
/// \pre T::isKind(*this)
template<typename T>
T castAs() const {
assert(T::isKind(*this));
T t;
TypeLoc& tl = t;
tl = *this;
return t;
}
/// Convert to the specified TypeLoc type, returning a null TypeLoc if
/// this TypeLoc is not of the desired type.
template<typename T>
T getAs() const {
if (!T::isKind(*this))
return {};
T t;
TypeLoc& tl = t;
tl = *this;
return t;
}
/// Convert to the specified TypeLoc type, returning a null TypeLoc if
/// this TypeLoc is not of the desired type. It will consider type
/// adjustments from a type that was written as a T to another type that is
/// still canonically a T (ignores parens, attributes, elaborated types, etc).
template <typename T>
T getAsAdjusted() const;
/// The kinds of TypeLocs. Equivalent to the Type::TypeClass enum,
/// except it also defines a Qualified enum that corresponds to the
/// QualifiedLoc class.
enum TypeLocClass {
#define ABSTRACT_TYPE(Class, Base)
#define TYPE(Class, Base) \
Class = Type::Class,
#include "clang/AST/TypeNodes.inc"
Qualified
};
TypeLocClass getTypeLocClass() const {
if (getType().hasLocalQualifiers()) return Qualified;
return (TypeLocClass) getType()->getTypeClass();
}
bool isNull() const { return !Ty; }
explicit operator bool() const { return Ty; }
/// Returns the size of type source info data block for the given type.
static unsigned getFullDataSizeForType(QualType Ty);
/// Returns the alignment of type source info data block for
/// the given type.
static unsigned getLocalAlignmentForType(QualType Ty);
/// Get the type for which this source info wrapper provides
/// information.
QualType getType() const {
return QualType::getFromOpaquePtr(Ty);
}
const Type *getTypePtr() const {
return QualType::getFromOpaquePtr(Ty).getTypePtr();
}
/// Get the pointer where source information is stored.
void *getOpaqueData() const {
return Data;
}
/// Get the begin source location.
SourceLocation getBeginLoc() const;
/// Get the end source location.
SourceLocation getEndLoc() const;
/// Get the full source range.
SourceRange getSourceRange() const LLVM_READONLY {
return SourceRange(getBeginLoc(), getEndLoc());
}
/// Get the local source range.
SourceRange getLocalSourceRange() const {
return getLocalSourceRangeImpl(*this);
}
/// Returns the size of the type source info data block.
unsigned getFullDataSize() const {
return getFullDataSizeForType(getType());
}
/// Get the next TypeLoc pointed by this TypeLoc, e.g for "int*" the
/// TypeLoc is a PointerLoc and next TypeLoc is for "int".
TypeLoc getNextTypeLoc() const {
return getNextTypeLocImpl(*this);
}
/// Skips past any qualifiers, if this is qualified.
UnqualTypeLoc getUnqualifiedLoc() const; // implemented in this header
TypeLoc IgnoreParens() const;
/// Find a type with the location of an explicit type qualifier.
///
/// The result, if non-null, will be one of:
/// QualifiedTypeLoc
/// AtomicTypeLoc
/// AttributedTypeLoc, for those type attributes that behave as qualifiers
TypeLoc findExplicitQualifierLoc() const;
/// Initializes this to state that every location in this
/// type is the given location.
///
/// This method exists to provide a simple transition for code that
/// relies on location-less types.
void initialize(ASTContext &Context, SourceLocation Loc) const {
initializeImpl(Context, *this, Loc);
}
/// Initializes this by copying its information from another
/// TypeLoc of the same type.
void initializeFullCopy(TypeLoc Other) {
assert(getType() == Other.getType());
copy(Other);
}
/// Initializes this by copying its information from another
/// TypeLoc of the same type. The given size must be the full data
/// size.
void initializeFullCopy(TypeLoc Other, unsigned Size) {
assert(getType() == Other.getType());
assert(getFullDataSize() == Size);
copy(Other);
}
/// Copies the other type loc into this one.
void copy(TypeLoc other);
friend bool operator==(const TypeLoc &LHS, const TypeLoc &RHS) {
return LHS.Ty == RHS.Ty && LHS.Data == RHS.Data;
}
friend bool operator!=(const TypeLoc &LHS, const TypeLoc &RHS) {
return !(LHS == RHS);
}
/// Find the location of the nullability specifier (__nonnull,
/// __nullable, or __null_unspecifier), if there is one.
SourceLocation findNullabilityLoc() const;
private:
static bool isKind(const TypeLoc&) {
return true;
}
static void initializeImpl(ASTContext &Context, TypeLoc TL,
SourceLocation Loc);
static TypeLoc getNextTypeLocImpl(TypeLoc TL);
static TypeLoc IgnoreParensImpl(TypeLoc TL);
static SourceRange getLocalSourceRangeImpl(TypeLoc TL);
};
/// Return the TypeLoc for a type source info.
inline TypeLoc TypeSourceInfo::getTypeLoc() const {
// TODO: is this alignment already sufficient?
return TypeLoc(Ty, const_cast<void*>(static_cast<const void*>(this + 1)));
}
/// Wrapper of type source information for a type with
/// no direct qualifiers.
class UnqualTypeLoc : public TypeLoc {
public:
UnqualTypeLoc() = default;
UnqualTypeLoc(const Type *Ty, void *Data) : TypeLoc(Ty, Data) {}
const Type *getTypePtr() const {
return reinterpret_cast<const Type*>(Ty);
}
TypeLocClass getTypeLocClass() const {
return (TypeLocClass) getTypePtr()->getTypeClass();
}
private:
friend class TypeLoc;
static bool isKind(const TypeLoc &TL) {
return !TL.getType().hasLocalQualifiers();
}
};
/// Wrapper of type source information for a type with
/// non-trivial direct qualifiers.
///
/// Currently, we intentionally do not provide source location for
/// type qualifiers.
class QualifiedTypeLoc : public TypeLoc {
public:
SourceRange getLocalSourceRange() const { return {}; }
UnqualTypeLoc getUnqualifiedLoc() const {
unsigned align =
TypeLoc::getLocalAlignmentForType(QualType(getTypePtr(), 0));
auto dataInt = reinterpret_cast<uintptr_t>(Data);
dataInt = llvm::alignTo(dataInt, align);
return UnqualTypeLoc(getTypePtr(), reinterpret_cast<void*>(dataInt));
}
/// Initializes the local data of this type source info block to
/// provide no information.
void initializeLocal(ASTContext &Context, SourceLocation Loc) {
// do nothing
}
void copyLocal(TypeLoc other) {
// do nothing
}
TypeLoc getNextTypeLoc() const {
return getUnqualifiedLoc();
}
/// Returns the size of the type source info data block that is
/// specific to this type.
unsigned getLocalDataSize() const {
// In fact, we don't currently preserve any location information
// for qualifiers.
return 0;
}
/// Returns the alignment of the type source info data block that is
/// specific to this type.
unsigned getLocalDataAlignment() const {
// We don't preserve any location information.
return 1;
}
private:
friend class TypeLoc;
static bool isKind(const TypeLoc &TL) {
return TL.getType().hasLocalQualifiers();
}
};
inline UnqualTypeLoc TypeLoc::getUnqualifiedLoc() const {
if (QualifiedTypeLoc Loc = getAs<QualifiedTypeLoc>())
return Loc.getUnqualifiedLoc();
return castAs<UnqualTypeLoc>();
}
/// A metaprogramming base class for TypeLoc classes which correspond
/// to a particular Type subclass. It is accepted for a single
/// TypeLoc class to correspond to multiple Type classes.
///
/// \tparam Base a class from which to derive
/// \tparam Derived the class deriving from this one
/// \tparam TypeClass the concrete Type subclass associated with this
/// location type
/// \tparam LocalData the structure type of local location data for
/// this type
///
/// TypeLocs with non-constant amounts of local data should override
/// getExtraLocalDataSize(); getExtraLocalData() will then point to
/// this extra memory.
///
/// TypeLocs with an inner type should define
/// QualType getInnerType() const
/// and getInnerTypeLoc() will then point to this inner type's
/// location data.
///
/// A word about hierarchies: this template is not designed to be
/// derived from multiple times in a hierarchy. It is also not
/// designed to be used for classes where subtypes might provide
/// different amounts of source information. It should be subclassed
/// only at the deepest portion of the hierarchy where all children
/// have identical source information; if that's an abstract type,
/// then further descendents should inherit from
/// InheritingConcreteTypeLoc instead.
template <class Base, class Derived, class TypeClass, class LocalData>
class ConcreteTypeLoc : public Base {
friend class TypeLoc;
const Derived *asDerived() const {
return static_cast<const Derived*>(this);
}
static bool isKind(const TypeLoc &TL) {
return !TL.getType().hasLocalQualifiers() &&
Derived::classofType(TL.getTypePtr());
}
static bool classofType(const Type *Ty) {
return TypeClass::classof(Ty);
}
public:
unsigned getLocalDataAlignment() const {
return std::max(unsigned(alignof(LocalData)),
asDerived()->getExtraLocalDataAlignment());
}
unsigned getLocalDataSize() const {
unsigned size = sizeof(LocalData);
unsigned extraAlign = asDerived()->getExtraLocalDataAlignment();
size = llvm::alignTo(size, extraAlign);
size += asDerived()->getExtraLocalDataSize();
return size;
}
void copyLocal(Derived other) {
// Some subclasses have no data to copy.
if (asDerived()->getLocalDataSize() == 0) return;
// Copy the fixed-sized local data.
memcpy(getLocalData(), other.getLocalData(), sizeof(LocalData));
// Copy the variable-sized local data. We need to do this
// separately because the padding in the source and the padding in
// the destination might be different.
memcpy(getExtraLocalData(), other.getExtraLocalData(),
asDerived()->getExtraLocalDataSize());
}
TypeLoc getNextTypeLoc() const {
return getNextTypeLoc(asDerived()->getInnerType());
}
const TypeClass *getTypePtr() const {
return cast<TypeClass>(Base::getTypePtr());
}
protected:
unsigned getExtraLocalDataSize() const {
return 0;
}
unsigned getExtraLocalDataAlignment() const {
return 1;
}
LocalData *getLocalData() const {
return static_cast<LocalData*>(Base::Data);
}
/// Gets a pointer past the Info structure; useful for classes with
/// local data that can't be captured in the Info (e.g. because it's
/// of variable size).
void *getExtraLocalData() const {
unsigned size = sizeof(LocalData);
unsigned extraAlign = asDerived()->getExtraLocalDataAlignment();
size = llvm::alignTo(size, extraAlign);
return reinterpret_cast<char*>(Base::Data) + size;
}
void *getNonLocalData() const {
auto data = reinterpret_cast<uintptr_t>(Base::Data);
data += asDerived()->getLocalDataSize();
data = llvm::alignTo(data, getNextTypeAlign());
return reinterpret_cast<void*>(data);
}
struct HasNoInnerType {};
HasNoInnerType getInnerType() const { return HasNoInnerType(); }
TypeLoc getInnerTypeLoc() const {
return TypeLoc(asDerived()->getInnerType(), getNonLocalData());
}
private:
unsigned getInnerTypeSize() const {
return getInnerTypeSize(asDerived()->getInnerType());
}
unsigned getInnerTypeSize(HasNoInnerType _) const {
return 0;
}
unsigned getInnerTypeSize(QualType _) const {
return getInnerTypeLoc().getFullDataSize();
}
unsigned getNextTypeAlign() const {
return getNextTypeAlign(asDerived()->getInnerType());
}
unsigned getNextTypeAlign(HasNoInnerType _) const {
return 1;
}
unsigned getNextTypeAlign(QualType T) const {
return TypeLoc::getLocalAlignmentForType(T);
}
TypeLoc getNextTypeLoc(HasNoInnerType _) const { return {}; }
TypeLoc getNextTypeLoc(QualType T) const {
return TypeLoc(T, getNonLocalData());
}
};
/// A metaprogramming class designed for concrete subtypes of abstract
/// types where all subtypes share equivalently-structured source
/// information. See the note on ConcreteTypeLoc.
template <class Base, class Derived, class TypeClass>
class InheritingConcreteTypeLoc : public Base {
friend class TypeLoc;
static bool classofType(const Type *Ty) {
return TypeClass::classof(Ty);
}
static bool isKind(const TypeLoc &TL) {
return !TL.getType().hasLocalQualifiers() &&
Derived::classofType(TL.getTypePtr());
}
static bool isKind(const UnqualTypeLoc &TL) {
return Derived::classofType(TL.getTypePtr());
}
public:
const TypeClass *getTypePtr() const {
return cast<TypeClass>(Base::getTypePtr());
}
};
struct TypeSpecLocInfo {
SourceLocation NameLoc;
};
/// A reasonable base class for TypeLocs that correspond to
/// types that are written as a type-specifier.
class TypeSpecTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
TypeSpecTypeLoc,
Type,
TypeSpecLocInfo> {
public:
enum {
LocalDataSize = sizeof(TypeSpecLocInfo),
LocalDataAlignment = alignof(TypeSpecLocInfo)
};
SourceLocation getNameLoc() const {
return this->getLocalData()->NameLoc;
}
void setNameLoc(SourceLocation Loc) {
this->getLocalData()->NameLoc = Loc;
}
SourceRange getLocalSourceRange() const {
return SourceRange(getNameLoc(), getNameLoc());
}
void initializeLocal(ASTContext &Context, SourceLocation Loc) {
setNameLoc(Loc);
}
private:
friend class TypeLoc;
static bool isKind(const TypeLoc &TL);
};
struct BuiltinLocInfo {
SourceRange BuiltinRange;
};
/// Wrapper for source info for builtin types.
class BuiltinTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
BuiltinTypeLoc,
BuiltinType,
BuiltinLocInfo> {
public:
SourceLocation getBuiltinLoc() const {
return getLocalData()->BuiltinRange.getBegin();
}
void setBuiltinLoc(SourceLocation Loc) {
getLocalData()->BuiltinRange = Loc;
}
void expandBuiltinRange(SourceRange Range) {
SourceRange &BuiltinRange = getLocalData()->BuiltinRange;
if (!BuiltinRange.getBegin().isValid()) {
BuiltinRange = Range;
} else {
BuiltinRange.setBegin(std::min(Range.getBegin(), BuiltinRange.getBegin()));
BuiltinRange.setEnd(std::max(Range.getEnd(), BuiltinRange.getEnd()));
}
}
SourceLocation getNameLoc() const { return getBuiltinLoc(); }
WrittenBuiltinSpecs& getWrittenBuiltinSpecs() {
return *(static_cast<WrittenBuiltinSpecs*>(getExtraLocalData()));
}
const WrittenBuiltinSpecs& getWrittenBuiltinSpecs() const {
return *(static_cast<WrittenBuiltinSpecs*>(getExtraLocalData()));
}
bool needsExtraLocalData() const {
BuiltinType::Kind bk = getTypePtr()->getKind();
return (bk >= BuiltinType::UShort && bk <= BuiltinType::UInt128)
|| (bk >= BuiltinType::Short && bk <= BuiltinType::Float128)
|| bk == BuiltinType::UChar
|| bk == BuiltinType::SChar;
}
unsigned getExtraLocalDataSize() const {
return needsExtraLocalData() ? sizeof(WrittenBuiltinSpecs) : 0;
}
unsigned getExtraLocalDataAlignment() const {
return needsExtraLocalData() ? alignof(WrittenBuiltinSpecs) : 1;
}
SourceRange getLocalSourceRange() const {
return getLocalData()->BuiltinRange;
}
TypeSpecifierSign getWrittenSignSpec() const {
if (needsExtraLocalData())
return static_cast<TypeSpecifierSign>(getWrittenBuiltinSpecs().Sign);
else
return TSS_unspecified;
}
bool hasWrittenSignSpec() const {
return getWrittenSignSpec() != TSS_unspecified;
}
void setWrittenSignSpec(TypeSpecifierSign written) {
if (needsExtraLocalData())
getWrittenBuiltinSpecs().Sign = written;
}
TypeSpecifierWidth getWrittenWidthSpec() const {
if (needsExtraLocalData())
return static_cast<TypeSpecifierWidth>(getWrittenBuiltinSpecs().Width);
else
return TSW_unspecified;
}
bool hasWrittenWidthSpec() const {
return getWrittenWidthSpec() != TSW_unspecified;
}
void setWrittenWidthSpec(TypeSpecifierWidth written) {
if (needsExtraLocalData())
getWrittenBuiltinSpecs().Width = written;
}
TypeSpecifierType getWrittenTypeSpec() const;
bool hasWrittenTypeSpec() const {
return getWrittenTypeSpec() != TST_unspecified;
}
void setWrittenTypeSpec(TypeSpecifierType written) {
if (needsExtraLocalData())
getWrittenBuiltinSpecs().Type = written;
}
bool hasModeAttr() const {
if (needsExtraLocalData())
return getWrittenBuiltinSpecs().ModeAttr;
else
return false;
}
void setModeAttr(bool written) {
if (needsExtraLocalData())
getWrittenBuiltinSpecs().ModeAttr = written;
}
void initializeLocal(ASTContext &Context, SourceLocation Loc) {
setBuiltinLoc(Loc);
if (needsExtraLocalData()) {
WrittenBuiltinSpecs &wbs = getWrittenBuiltinSpecs();
wbs.Sign = TSS_unspecified;
wbs.Width = TSW_unspecified;
wbs.Type = TST_unspecified;
wbs.ModeAttr = false;
}
}
};
/// Wrapper for source info for typedefs.
class TypedefTypeLoc : public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
TypedefTypeLoc,
TypedefType> {
public:
TypedefNameDecl *getTypedefNameDecl() const {
return getTypePtr()->getDecl();
}
};
/// Wrapper for source info for injected class names of class
/// templates.
class InjectedClassNameTypeLoc :
public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
InjectedClassNameTypeLoc,
InjectedClassNameType> {
public:
CXXRecordDecl *getDecl() const {
return getTypePtr()->getDecl();
}
};
/// Wrapper for source info for unresolved typename using decls.
class UnresolvedUsingTypeLoc :
public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
UnresolvedUsingTypeLoc,
UnresolvedUsingType> {
public:
UnresolvedUsingTypenameDecl *getDecl() const {
return getTypePtr()->getDecl();
}
};
/// Wrapper for source info for tag types. Note that this only
/// records source info for the name itself; a type written 'struct foo'
/// should be represented as an ElaboratedTypeLoc. We currently
/// only do that when C++ is enabled because of the expense of
/// creating an ElaboratedType node for so many type references in C.
class TagTypeLoc : public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
TagTypeLoc,
TagType> {
public:
TagDecl *getDecl() const { return getTypePtr()->getDecl(); }
/// True if the tag was defined in this type specifier.
bool isDefinition() const;
};
/// Wrapper for source info for record types.
class RecordTypeLoc : public InheritingConcreteTypeLoc<TagTypeLoc,
RecordTypeLoc,
RecordType> {
public:
RecordDecl *getDecl() const { return getTypePtr()->getDecl(); }
};
/// Wrapper for source info for enum types.
class EnumTypeLoc : public InheritingConcreteTypeLoc<TagTypeLoc,
EnumTypeLoc,
EnumType> {
public:
EnumDecl *getDecl() const { return getTypePtr()->getDecl(); }
};
/// Wrapper for template type parameters.
class TemplateTypeParmTypeLoc :
public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
TemplateTypeParmTypeLoc,
TemplateTypeParmType> {
public:
TemplateTypeParmDecl *getDecl() const { return getTypePtr()->getDecl(); }
};
struct ObjCTypeParamTypeLocInfo {
SourceLocation NameLoc;
};
/// ProtocolLAngleLoc, ProtocolRAngleLoc, and the source locations for
/// protocol qualifiers are stored after Info.
class ObjCTypeParamTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
ObjCTypeParamTypeLoc,
ObjCTypeParamType,
ObjCTypeParamTypeLocInfo> {
// SourceLocations are stored after Info, one for each protocol qualifier.
SourceLocation *getProtocolLocArray() const {
return (SourceLocation*)this->getExtraLocalData() + 2;
}
public:
ObjCTypeParamDecl *getDecl() const { return getTypePtr()->getDecl(); }
SourceLocation getNameLoc() const {
return this->getLocalData()->NameLoc;
}
void setNameLoc(SourceLocation Loc) {
this->getLocalData()->NameLoc = Loc;
}
SourceLocation getProtocolLAngleLoc() const {
return getNumProtocols() ?
*((SourceLocation*)this->getExtraLocalData()) :
SourceLocation();
}
void setProtocolLAngleLoc(SourceLocation Loc) {
*((SourceLocation*)this->getExtraLocalData()) = Loc;
}
SourceLocation getProtocolRAngleLoc() const {
return getNumProtocols() ?
*((SourceLocation*)this->getExtraLocalData() + 1) :
SourceLocation();
}
void setProtocolRAngleLoc(SourceLocation Loc) {
*((SourceLocation*)this->getExtraLocalData() + 1) = Loc;
}
unsigned getNumProtocols() const {
return this->getTypePtr()->getNumProtocols();
}
SourceLocation getProtocolLoc(unsigned i) const {
assert(i < getNumProtocols() && "Index is out of bounds!");
return getProtocolLocArray()[i];
}
void setProtocolLoc(unsigned i, SourceLocation Loc) {
assert(i < getNumProtocols() && "Index is out of bounds!");
getProtocolLocArray()[i] = Loc;
}
ObjCProtocolDecl *getProtocol(unsigned i) const {
assert(i < getNumProtocols() && "Index is out of bounds!");
return *(this->getTypePtr()->qual_begin() + i);
}
ArrayRef<SourceLocation> getProtocolLocs() const {
return llvm::makeArrayRef(getProtocolLocArray(), getNumProtocols());
}
void initializeLocal(ASTContext &Context, SourceLocation Loc);
unsigned getExtraLocalDataSize() const {
if (!this->getNumProtocols()) return 0;
// When there are protocol qualifers, we have LAngleLoc and RAngleLoc
// as well.
return (this->getNumProtocols() + 2) * sizeof(SourceLocation) ;
}
unsigned getExtraLocalDataAlignment() const {
return alignof(SourceLocation);
}
SourceRange getLocalSourceRange() const {
SourceLocation start = getNameLoc();
SourceLocation end = getProtocolRAngleLoc();
if (end.isInvalid()) return SourceRange(start, start);
return SourceRange(start, end);
}
};
/// Wrapper for substituted template type parameters.
class SubstTemplateTypeParmTypeLoc :
public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
SubstTemplateTypeParmTypeLoc,
SubstTemplateTypeParmType> {
};
/// Wrapper for substituted template type parameters.
class SubstTemplateTypeParmPackTypeLoc :
public InheritingConcreteTypeLoc<TypeSpecTypeLoc,
SubstTemplateTypeParmPackTypeLoc,
SubstTemplateTypeParmPackType> {
};
struct AttributedLocInfo {
const Attr *TypeAttr;
};
/// Type source information for an attributed type.
class AttributedTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
AttributedTypeLoc,
AttributedType,
AttributedLocInfo> {
public:
attr::Kind getAttrKind() const {
return getTypePtr()->getAttrKind();
}
bool isQualifier() const {
return getTypePtr()->isQualifier();
}
/// The modified type, which is generally canonically different from
/// the attribute type.
/// int main(int, char**) __attribute__((noreturn))
/// ~~~ ~~~~~~~~~~~~~
TypeLoc getModifiedLoc() const {
return getInnerTypeLoc();
}
/// The type attribute.
const Attr *getAttr() const {
return getLocalData()->TypeAttr;
}
void setAttr(const Attr *A) {
getLocalData()->TypeAttr = A;
}
template<typename T> const T *getAttrAs() {
return dyn_cast_or_null<T>(getAttr());
}
SourceRange getLocalSourceRange() const;
void initializeLocal(ASTContext &Context, SourceLocation loc) {
setAttr(nullptr);
}
QualType getInnerType() const {
return getTypePtr()->getModifiedType();
}
};
struct ObjCObjectTypeLocInfo {
SourceLocation TypeArgsLAngleLoc;
SourceLocation TypeArgsRAngleLoc;
SourceLocation ProtocolLAngleLoc;
SourceLocation ProtocolRAngleLoc;
bool HasBaseTypeAsWritten;
};
// A helper class for defining ObjC TypeLocs that can qualified with
// protocols.
//
// TypeClass basically has to be either ObjCInterfaceType or
// ObjCObjectPointerType.
class ObjCObjectTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
ObjCObjectTypeLoc,
ObjCObjectType,
ObjCObjectTypeLocInfo> {
// TypeSourceInfo*'s are stored after Info, one for each type argument.
TypeSourceInfo **getTypeArgLocArray() const {
return (TypeSourceInfo**)this->getExtraLocalData();
}
// SourceLocations are stored after the type argument information, one for
// each Protocol.
SourceLocation *getProtocolLocArray() const {
return (SourceLocation*)(getTypeArgLocArray() + getNumTypeArgs());
}
public:
SourceLocation getTypeArgsLAngleLoc() const {
return this->getLocalData()->TypeArgsLAngleLoc;
}
void setTypeArgsLAngleLoc(SourceLocation Loc) {
this->getLocalData()->TypeArgsLAngleLoc = Loc;
}
SourceLocation getTypeArgsRAngleLoc() const {
return this->getLocalData()->TypeArgsRAngleLoc;
}
void setTypeArgsRAngleLoc(SourceLocation Loc) {
this->getLocalData()->TypeArgsRAngleLoc = Loc;
}
unsigned getNumTypeArgs() const {
return this->getTypePtr()->getTypeArgsAsWritten().size();
}
TypeSourceInfo *getTypeArgTInfo(unsigned i) const {
assert(i < getNumTypeArgs() && "Index is out of bounds!");
return getTypeArgLocArray()[i];
}
void setTypeArgTInfo(unsigned i, TypeSourceInfo *TInfo) {
assert(i < getNumTypeArgs() && "Index is out of bounds!");
getTypeArgLocArray()[i] = TInfo;
}
SourceLocation getProtocolLAngleLoc() const {
return this->getLocalData()->ProtocolLAngleLoc;
}
void setProtocolLAngleLoc(SourceLocation Loc) {
this->getLocalData()->ProtocolLAngleLoc = Loc;
}
SourceLocation getProtocolRAngleLoc() const {
return this->getLocalData()->ProtocolRAngleLoc;
}
void setProtocolRAngleLoc(SourceLocation Loc) {
this->getLocalData()->ProtocolRAngleLoc = Loc;
}
unsigned getNumProtocols() const {
return this->getTypePtr()->getNumProtocols();
}
SourceLocation getProtocolLoc(unsigned i) const {
assert(i < getNumProtocols() && "Index is out of bounds!");
return getProtocolLocArray()[i];
}
void setProtocolLoc(unsigned i, SourceLocation Loc) {
assert(i < getNumProtocols() && "Index is out of bounds!");
getProtocolLocArray()[i] = Loc;
}
ObjCProtocolDecl *getProtocol(unsigned i) const {
assert(i < getNumProtocols() && "Index is out of bounds!");
return *(this->getTypePtr()->qual_begin() + i);
}
ArrayRef<SourceLocation> getProtocolLocs() const {
return llvm::makeArrayRef(getProtocolLocArray(), getNumProtocols());
}
bool hasBaseTypeAsWritten() const {
return getLocalData()->HasBaseTypeAsWritten;
}
void setHasBaseTypeAsWritten(bool HasBaseType) {
getLocalData()->HasBaseTypeAsWritten = HasBaseType;
}
TypeLoc getBaseLoc() const {
return getInnerTypeLoc();
}
SourceRange getLocalSourceRange() const {
SourceLocation start = getTypeArgsLAngleLoc();