#include "clang/AST/Type.h"

Inheritance diagram for clang::UsingType:

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Public Member Functions
UsingShadowDecl *	getFoundDecl () const

QualType	getUnderlyingType () const

bool	isSugared () const

QualType	desugar () const

bool	typeMatchesDecl () const

void	Profile (llvm::FoldingSetNodeID &ID)

Public Member Functions inherited from clang::Type
	Type (const Type &)=delete

	Type (Type &&)=delete

Type &	operator= (const Type &)=delete

Type &	operator= (Type &&)=delete

TypeClass	getTypeClass () const

bool	isFromAST () const
	Whether this type comes from an AST file.

bool	containsUnexpandedParameterPack () const
	Whether this type is or contains an unexpanded parameter pack, used to support C++0x variadic templates.

bool	isCanonicalUnqualified () const
	Determines if this type would be canonical if it had no further qualification.

QualType	getLocallyUnqualifiedSingleStepDesugaredType () const
	Pull a single level of sugar off of this locally-unqualified type.

bool	isSizelessType () const
	As an extension, we classify types as one of "sized" or "sizeless"; every type is one or the other.

bool	isSizelessBuiltinType () const

bool	isSizelessVectorType () const
	Returns true for all scalable vector types.

bool	isSVESizelessBuiltinType () const
	Returns true for SVE scalable vector types.

bool	isRVVSizelessBuiltinType () const
	Returns true for RVV scalable vector types.

bool	isWebAssemblyExternrefType () const
	Check if this is a WebAssembly Externref Type.

bool	isWebAssemblyTableType () const
	Returns true if this is a WebAssembly table type: either an array of reference types, or a pointer to a reference type (which can only be created by array to pointer decay).

bool	isSveVLSBuiltinType () const
	Determines if this is a sizeless type supported by the 'arm_sve_vector_bits' type attribute, which can be applied to a single SVE vector or predicate, excluding tuple types such as svint32x4_t.

QualType	getSveEltType (const ASTContext &Ctx) const
	Returns the representative type for the element of an SVE builtin type.

bool	isRVVVLSBuiltinType () const
	Determines if this is a sizeless type supported by the 'riscv_rvv_vector_bits' type attribute, which can be applied to a single RVV vector or mask.

QualType	getRVVEltType (const ASTContext &Ctx) const
	Returns the representative type for the element of an RVV builtin type.

QualType	getSizelessVectorEltType (const ASTContext &Ctx) const
	Returns the representative type for the element of a sizeless vector builtin type.

bool	isIncompleteType (NamedDecl **Def=nullptr) const
	Types are partitioned into 3 broad categories (C99 6.2.5p1): object types, function types, and incomplete types.

bool	isIncompleteOrObjectType () const
	Return true if this is an incomplete or object type, in other words, not a function type.

bool	isObjectType () const
	Determine whether this type is an object type.

bool	isLiteralType (const ASTContext &Ctx) const
	Return true if this is a literal type (C++11 [basic.types]p10)

bool	isStructuralType () const
	Determine if this type is a structural type, per C++20 [temp.param]p7.

bool	isStandardLayoutType () const
	Test if this type is a standard-layout type.

bool	isBuiltinType () const
	Helper methods to distinguish type categories.

bool	isSpecificBuiltinType (unsigned K) const
	Test for a particular builtin type.

bool	isPlaceholderType () const
	Test for a type which does not represent an actual type-system type but is instead used as a placeholder for various convenient purposes within Clang.

const BuiltinType *	getAsPlaceholderType () const

bool	isSpecificPlaceholderType (unsigned K) const
	Test for a specific placeholder type.

bool	isNonOverloadPlaceholderType () const
	Test for a placeholder type other than Overload; see BuiltinType::isNonOverloadPlaceholderType.

bool	isIntegerType () const
	isIntegerType() does not include complex integers (a GCC extension).

bool	isEnumeralType () const

bool	isScopedEnumeralType () const
	Determine whether this type is a scoped enumeration type.

bool	isBooleanType () const

bool	isCharType () const

bool	isWideCharType () const

bool	isChar8Type () const

bool	isChar16Type () const

bool	isChar32Type () const

bool	isAnyCharacterType () const
	Determine whether this type is any of the built-in character types.

bool	isIntegralType (const ASTContext &Ctx) const
	Determine whether this type is an integral type.

bool	isIntegralOrEnumerationType () const
	Determine whether this type is an integral or enumeration type.

bool	isIntegralOrUnscopedEnumerationType () const
	Determine whether this type is an integral or unscoped enumeration type.

bool	isUnscopedEnumerationType () const

bool	isRealFloatingType () const
	Floating point categories.

bool	isComplexType () const
	isComplexType() does not include complex integers (a GCC extension).

bool	isAnyComplexType () const

bool	isFloatingType () const

bool	isHalfType () const

bool	isFloat16Type () const

bool	isFloat32Type () const

bool	isDoubleType () const

bool	isBFloat16Type () const

bool	isFloat128Type () const

bool	isIbm128Type () const

bool	isRealType () const

bool	isArithmeticType () const

bool	isVoidType () const

bool	isScalarType () const

bool	isAggregateType () const
	Determines whether the type is a C++ aggregate type or C aggregate or union type.

bool	isFundamentalType () const
	Tests whether the type is categorized as a fundamental type.

bool	isCompoundType () const
	Tests whether the type is categorized as a compound type.

bool	isFunctionType () const

bool	isFunctionNoProtoType () const

bool	isFunctionProtoType () const

bool	isPointerType () const

bool	isPointerOrReferenceType () const

bool	isSignableType () const

bool	isAnyPointerType () const

bool	isCountAttributedType () const

bool	isBlockPointerType () const

bool	isVoidPointerType () const

bool	isReferenceType () const

bool	isLValueReferenceType () const

bool	isRValueReferenceType () const

bool	isObjectPointerType () const

bool	isFunctionPointerType () const

bool	isFunctionReferenceType () const

bool	isMemberPointerType () const

bool	isMemberFunctionPointerType () const

bool	isMemberDataPointerType () const

bool	isArrayType () const

bool	isConstantArrayType () const

bool	isIncompleteArrayType () const

bool	isVariableArrayType () const

bool	isArrayParameterType () const

bool	isDependentSizedArrayType () const

bool	isRecordType () const

bool	isClassType () const

bool	isStructureType () const

bool	isStructureTypeWithFlexibleArrayMember () const

bool	isObjCBoxableRecordType () const

bool	isInterfaceType () const

bool	isStructureOrClassType () const

bool	isUnionType () const

bool	isComplexIntegerType () const

bool	isVectorType () const

bool	isExtVectorType () const

bool	isExtVectorBoolType () const

bool	isSubscriptableVectorType () const

bool	isMatrixType () const

bool	isConstantMatrixType () const

bool	isDependentAddressSpaceType () const

bool	isObjCObjectPointerType () const

bool	isObjCRetainableType () const

bool	isObjCLifetimeType () const
	Returns true if objects of this type have lifetime semantics under ARC.

bool	isObjCIndirectLifetimeType () const

bool	isObjCNSObjectType () const

bool	isObjCIndependentClassType () const

bool	isObjCObjectType () const

bool	isObjCQualifiedInterfaceType () const

bool	isObjCQualifiedIdType () const

bool	isObjCQualifiedClassType () const

bool	isObjCObjectOrInterfaceType () const

bool	isObjCIdType () const

bool	isDecltypeType () const

bool	isObjCInertUnsafeUnretainedType () const
	Was this type written with the special inert-in-ARC __unsafe_unretained qualifier?

bool	isObjCIdOrObjectKindOfType (const ASTContext &ctx, const ObjCObjectType *&bound) const
	Whether the type is Objective-C 'id' or a __kindof type of an object type, e.g., __kindof NSView * or __kindof id <NSCopying>.

bool	isObjCClassType () const

bool	isObjCClassOrClassKindOfType () const
	Whether the type is Objective-C 'Class' or a __kindof type of an Class type, e.g., __kindof Class <NSCopying>.

bool	isBlockCompatibleObjCPointerType (ASTContext &ctx) const

bool	isObjCSelType () const

bool	isObjCBuiltinType () const

bool	isObjCARCBridgableType () const
	Determine whether the given type T is a "bridgable" Objective-C type, which is either an Objective-C object pointer type or an.

bool	isCARCBridgableType () const
	Determine whether the given type T is a "bridgeable" C type.

bool	isTemplateTypeParmType () const

bool	isNullPtrType () const

bool	isNothrowT () const

bool	isAlignValT () const

bool	isStdByteType () const

bool	isAtomicType () const

bool	isUndeducedAutoType () const

bool	isTypedefNameType () const
	Determines whether this type is written as a typedef-name.

bool	isImageType () const

bool	isSamplerT () const

bool	isEventT () const

bool	isClkEventT () const

bool	isQueueT () const

bool	isReserveIDT () const

bool	isOCLIntelSubgroupAVCType () const

bool	isOCLExtOpaqueType () const

bool	isPipeType () const

bool	isBitIntType () const

bool	isOpenCLSpecificType () const

bool	isHLSLSpecificType () const

bool	isHLSLBuiltinIntangibleType () const

bool	isHLSLAttributedResourceType () const

bool	isHLSLIntangibleType () const

bool	isObjCARCImplicitlyUnretainedType () const
	Determines if this type, which must satisfy isObjCLifetimeType(), is implicitly __unsafe_unretained rather than implicitly __strong.

bool	isCUDADeviceBuiltinSurfaceType () const
	Check if the type is the CUDA device builtin surface type.

bool	isCUDADeviceBuiltinTextureType () const
	Check if the type is the CUDA device builtin texture type.

Qualifiers::ObjCLifetime	getObjCARCImplicitLifetime () const
	Return the implicit lifetime for this type, which must not be dependent.

ScalarTypeKind	getScalarTypeKind () const
	Given that this is a scalar type, classify it.

TypeDependence	getDependence () const

bool	containsErrors () const
	Whether this type is an error type.

bool	isDependentType () const
	Whether this type is a dependent type, meaning that its definition somehow depends on a template parameter (C++ [temp.dep.type]).

bool	isInstantiationDependentType () const
	Determine whether this type is an instantiation-dependent type, meaning that the type involves a template parameter (even if the definition does not actually depend on the type substituted for that template parameter).

bool	isUndeducedType () const
	Determine whether this type is an undeduced type, meaning that it somehow involves a C++11 'auto' type or similar which has not yet been deduced.

bool	isVariablyModifiedType () const
	Whether this type is a variably-modified type (C99 6.7.5).

bool	hasSizedVLAType () const
	Whether this type involves a variable-length array type with a definite size.

bool	hasUnnamedOrLocalType () const
	Whether this type is or contains a local or unnamed type.

bool	isOverloadableType () const
	Determines whether this is a type for which one can define an overloaded operator.

bool	isElaboratedTypeSpecifier () const
	Determine wither this type is a C++ elaborated-type-specifier.

bool	canDecayToPointerType () const
	Determines whether this type can decay to a pointer type.

bool	hasPointerRepresentation () const
	Whether this type is represented natively as a pointer.

bool	hasObjCPointerRepresentation () const
	Whether this type can represent an objective pointer type for the purpose of GC'ability.

bool	hasIntegerRepresentation () const
	Determine whether this type has an integer representation of some sort, e.g., it is an integer type or a vector.

bool	hasSignedIntegerRepresentation () const
	Determine whether this type has an signed integer representation of some sort, e.g., it is an signed integer type or a vector.

bool	hasUnsignedIntegerRepresentation () const
	Determine whether this type has an unsigned integer representation of some sort, e.g., it is an unsigned integer type or a vector.

bool	hasFloatingRepresentation () const
	Determine whether this type has a floating-point representation of some sort, e.g., it is a floating-point type or a vector thereof.

const RecordType *	getAsStructureType () const

const RecordType *	getAsUnionType () const
	NOTE: getAs*ArrayType are methods on ASTContext.

const ComplexType *	getAsComplexIntegerType () const

const ObjCObjectType *	getAsObjCInterfaceType () const

const ObjCObjectPointerType *	getAsObjCInterfacePointerType () const

const ObjCObjectPointerType *	getAsObjCQualifiedIdType () const

const ObjCObjectPointerType *	getAsObjCQualifiedClassType () const

const ObjCObjectType *	getAsObjCQualifiedInterfaceType () const

CXXRecordDecl *	getAsCXXRecordDecl () const
	Retrieves the CXXRecordDecl that this type refers to, either because the type is a RecordType or because it is the injected-class-name type of a class template or class template partial specialization.

RecordDecl *	getAsRecordDecl () const
	Retrieves the RecordDecl this type refers to.

TagDecl *	getAsTagDecl () const
	Retrieves the TagDecl that this type refers to, either because the type is a TagType or because it is the injected-class-name type of a class template or class template partial specialization.

const CXXRecordDecl *	getPointeeCXXRecordDecl () const
	If this is a pointer or reference to a RecordType, return the CXXRecordDecl that the type refers to.

DeducedType *	getContainedDeducedType () const
	Get the DeducedType whose type will be deduced for a variable with an initializer of this type.

AutoType *	getContainedAutoType () const
	Get the AutoType whose type will be deduced for a variable with an initializer of this type.

bool	hasAutoForTrailingReturnType () const
	Determine whether this type was written with a leading 'auto' corresponding to a trailing return type (possibly for a nested function type within a pointer to function type or similar).

template<typename T >
const T *	getAs () const
	Member-template getAs<specific type>'.

template<typename T >
const T *	getAsAdjusted () const
	Member-template getAsAdjusted<specific type>.

const ArrayType *	getAsArrayTypeUnsafe () const
	A variant of getAs<> for array types which silently discards qualifiers from the outermost type.

template<typename T >
const T *	castAs () const
	Member-template castAs<specific type>.

const ArrayType *	castAsArrayTypeUnsafe () const
	A variant of castAs<> for array type which silently discards qualifiers from the outermost type.

bool	hasAttr (attr::Kind AK) const
	Determine whether this type had the specified attribute applied to it (looking through top-level type sugar).

const Type *	getBaseElementTypeUnsafe () const
	Get the base element type of this type, potentially discarding type qualifiers.

const Type *	getArrayElementTypeNoTypeQual () const
	If this is an array type, return the element type of the array, potentially with type qualifiers missing.

const Type *	getPointeeOrArrayElementType () const
	If this is a pointer type, return the pointee type.

QualType	getPointeeType () const
	If this is a pointer, ObjC object pointer, or block pointer, this returns the respective pointee.

const Type *	getUnqualifiedDesugaredType () const
	Return the specified type with any "sugar" removed from the type, removing any typedefs, typeofs, etc., as well as any qualifiers.

bool	isSignedIntegerType () const
	Return true if this is an integer type that is signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], or an enum decl which has a signed representation.

bool	isUnsignedIntegerType () const
	Return true if this is an integer type that is unsigned, according to C99 6.2.5p6 [which returns true for _Bool], or an enum decl which has an unsigned representation.

bool	isSignedIntegerOrEnumerationType () const
	Determines whether this is an integer type that is signed or an enumeration types whose underlying type is a signed integer type.

bool	isUnsignedIntegerOrEnumerationType () const
	Determines whether this is an integer type that is unsigned or an enumeration types whose underlying type is a unsigned integer type.

bool	isFixedPointType () const
	Return true if this is a fixed point type according to ISO/IEC JTC1 SC22 WG14 N1169.

bool	isFixedPointOrIntegerType () const
	Return true if this is a fixed point or integer type.

bool	isConvertibleToFixedPointType () const
	Return true if this can be converted to (or from) a fixed point type.

bool	isSaturatedFixedPointType () const
	Return true if this is a saturated fixed point type according to ISO/IEC JTC1 SC22 WG14 N1169.

bool	isUnsaturatedFixedPointType () const
	Return true if this is a saturated fixed point type according to ISO/IEC JTC1 SC22 WG14 N1169.

bool	isSignedFixedPointType () const
	Return true if this is a fixed point type that is signed according to ISO/IEC JTC1 SC22 WG14 N1169.

bool	isUnsignedFixedPointType () const
	Return true if this is a fixed point type that is unsigned according to ISO/IEC JTC1 SC22 WG14 N1169.

bool	isConstantSizeType () const
	Return true if this is not a variable sized type, according to the rules of C99 6.7.5p3.

bool	isSpecifierType () const
	Returns true if this type can be represented by some set of type specifiers.

Linkage	getLinkage () const
	Determine the linkage of this type.

Visibility	getVisibility () const
	Determine the visibility of this type.

bool	isVisibilityExplicit () const
	Return true if the visibility was explicitly set is the code.

LinkageInfo	getLinkageAndVisibility () const
	Determine the linkage and visibility of this type.

bool	isLinkageValid () const
	True if the computed linkage is valid.

std::optional< NullabilityKind >	getNullability () const
	Determine the nullability of the given type.

bool	canHaveNullability (bool ResultIfUnknown=true) const
	Determine whether the given type can have a nullability specifier applied to it, i.e., if it is any kind of pointer type.

std::optional< ArrayRef< QualType > >	getObjCSubstitutions (const DeclContext *dc) const
	Retrieve the set of substitutions required when accessing a member of the Objective-C receiver type that is declared in the given context.

bool	acceptsObjCTypeParams () const
	Determines if this is an ObjC interface type that may accept type parameters.

const char *	getTypeClassName () const

QualType	getCanonicalTypeInternal () const

CanQualType	getCanonicalTypeUnqualified () const

void	dump () const

void	dump (llvm::raw_ostream &OS, const ASTContext &Context) const

template<>
const TypedefType *	getAs () const
	This will check for a TypedefType by removing any existing sugar until it reaches a TypedefType or a non-sugared type.

Static Public Member Functions
static void	Profile (llvm::FoldingSetNodeID &ID, const UsingShadowDecl *Found, QualType Underlying)

static bool	classof (const Type *T)

Friends
class	ASTContext

Additional Inherited Members
Public Types inherited from clang::Type
enum	TypeClass

enum	ScalarTypeKind { STK_CPointer , STK_BlockPointer , STK_ObjCObjectPointer , STK_MemberPointer , STK_Bool , STK_Integral , STK_Floating , STK_IntegralComplex , STK_FloatingComplex , STK_FixedPoint }

Static Public Attributes inherited from clang::Type
static constexpr int	FunctionTypeNumParamsWidth = 16

static constexpr int	FunctionTypeNumParamsLimit = (1 << 16) - 1

Protected Types inherited from clang::Type
enum	{ NumArrayTypeBits = NumTypeBits + 6 }

enum	{ NumTypeWithKeywordBits = NumTypeBits + 8 }

Protected Member Functions inherited from clang::Type
	Type (TypeClass tc, QualType canon, TypeDependence Dependence)

Type *	this_ ()

void	setDependence (TypeDependence D)

void	addDependence (TypeDependence D)

Protected Attributes inherited from clang::Type
union {
TypeBitfields TypeBits

ArrayTypeBitfields ArrayTypeBits

ConstantArrayTypeBitfields ConstantArrayTypeBits

AttributedTypeBitfields AttributedTypeBits

AutoTypeBitfields AutoTypeBits

TypeOfBitfields TypeOfBits

TypedefBitfields TypedefBits

UsingBitfields UsingBits

BuiltinTypeBitfields BuiltinTypeBits

FunctionTypeBitfields FunctionTypeBits

ObjCObjectTypeBitfields ObjCObjectTypeBits

ReferenceTypeBitfields ReferenceTypeBits

TypeWithKeywordBitfields TypeWithKeywordBits

ElaboratedTypeBitfields ElaboratedTypeBits

VectorTypeBitfields VectorTypeBits

TemplateTypeParmTypeBitfields TemplateTypeParmTypeBits

SubstTemplateTypeParmTypeBitfields SubstTemplateTypeParmTypeBits

SubstTemplateTypeParmPackTypeBitfields SubstTemplateTypeParmPackTypeBits

TemplateSpecializationTypeBitfields TemplateSpecializationTypeBits

DependentTemplateSpecializationTypeBitfields DependentTemplateSpecializationTypeBits

PackExpansionTypeBitfields PackExpansionTypeBits

CountAttributedTypeBitfields CountAttributedTypeBits

};