| //===--- Type.cpp - Type representation and manipulation ------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements type-related functionality. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Type.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/AST/Expr.h" |
| #include "llvm/ADT/StringExtras.h" |
| |
| using namespace clang; |
| |
| bool QualType::isConstant(ASTContext& Ctx) const { |
| if (isConstQualified()) |
| return true; |
| |
| if (getTypePtr()->isArrayType()) |
| return Ctx.getAsArrayType(*this)->getElementType().isConstant(Ctx); |
| |
| return false; |
| } |
| |
| void Type::Destroy(ASTContext& C) { delete this; } |
| |
| void FunctionTypeProto::Destroy(ASTContext& C) { |
| // Destroy the object, but don't call delete. These are malloc'd. |
| this->~FunctionTypeProto(); |
| free(this); |
| } |
| |
| void VariableArrayType::Destroy(ASTContext& C) { |
| SizeExpr->Destroy(C); |
| delete this; |
| } |
| |
| void DependentSizedArrayType::Destroy(ASTContext& C) { |
| SizeExpr->Destroy(C); |
| delete this; |
| } |
| |
| /// getArrayElementTypeNoTypeQual - If this is an array type, return the |
| /// element type of the array, potentially with type qualifiers missing. |
| /// This method should never be used when type qualifiers are meaningful. |
| const Type *Type::getArrayElementTypeNoTypeQual() const { |
| // If this is directly an array type, return it. |
| if (const ArrayType *ATy = dyn_cast<ArrayType>(this)) |
| return ATy->getElementType().getTypePtr(); |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<ArrayType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (ArrayType *AT = dyn_cast<ArrayType>(CanonicalType.getUnqualifiedType())) |
| return AT->getElementType().getTypePtr(); |
| return 0; |
| } |
| |
| // If this is a typedef for an array type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getArrayElementTypeNoTypeQual(); |
| } |
| |
| /// getDesugaredType - Return the specified type with any "sugar" removed from |
| /// type type. This takes off typedefs, typeof's etc. If the outer level of |
| /// the type is already concrete, it returns it unmodified. This is similar |
| /// to getting the canonical type, but it doesn't remove *all* typedefs. For |
| /// example, it return "T*" as "T*", (not as "int*"), because the pointer is |
| /// concrete. |
| QualType Type::getDesugaredType() const { |
| if (const TypedefType *TDT = dyn_cast<TypedefType>(this)) |
| return TDT->LookThroughTypedefs(); |
| if (const TypeOfExpr *TOE = dyn_cast<TypeOfExpr>(this)) |
| return TOE->getUnderlyingExpr()->getType(); |
| if (const TypeOfType *TOT = dyn_cast<TypeOfType>(this)) |
| return TOT->getUnderlyingType(); |
| // FIXME: remove this cast. |
| return QualType(const_cast<Type*>(this), 0); |
| } |
| |
| /// isVoidType - Helper method to determine if this is the 'void' type. |
| bool Type::isVoidType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() == BuiltinType::Void; |
| return false; |
| } |
| |
| bool Type::isObjectType() const { |
| if (isa<FunctionType>(CanonicalType)) |
| return false; |
| else if (CanonicalType->isIncompleteType()) |
| return false; |
| else |
| return true; |
| } |
| |
| bool Type::isDerivedType() const { |
| switch (CanonicalType->getTypeClass()) { |
| case Pointer: |
| case VariableArray: |
| case ConstantArray: |
| case IncompleteArray: |
| case FunctionProto: |
| case FunctionNoProto: |
| case Reference: |
| return true; |
| case Tagged: { |
| const TagType *TT = cast<TagType>(CanonicalType); |
| return !TT->getDecl()->isEnum(); |
| } |
| default: |
| return false; |
| } |
| } |
| |
| bool Type::isClassType() const { |
| if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) |
| if (RT->getDecl()->isClass()) |
| return true; |
| return false; |
| } |
| bool Type::isStructureType() const { |
| if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) |
| if (RT->getDecl()->isStruct()) |
| return true; |
| return false; |
| } |
| bool Type::isUnionType() const { |
| if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) |
| if (RT->getDecl()->isUnion()) |
| return true; |
| return false; |
| } |
| |
| bool Type::isComplexType() const { |
| if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) |
| return CT->getElementType()->isFloatingType(); |
| return false; |
| } |
| |
| bool Type::isComplexIntegerType() const { |
| // Check for GCC complex integer extension. |
| if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) |
| return CT->getElementType()->isIntegerType(); |
| return false; |
| } |
| |
| const ComplexType *Type::getAsComplexIntegerType() const { |
| // Are we directly a complex type? |
| if (const ComplexType *CTy = dyn_cast<ComplexType>(this)) { |
| if (CTy->getElementType()->isIntegerType()) |
| return CTy; |
| } |
| // If the canonical form of this type isn't the right kind, reject it. |
| const ComplexType *CTy = dyn_cast<ComplexType>(CanonicalType); |
| if (!CTy || !CTy->getElementType()->isIntegerType()) |
| return 0; |
| |
| // If this is a typedef for a complex type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsComplexIntegerType(); |
| } |
| |
| const BuiltinType *Type::getAsBuiltinType() const { |
| // If this is directly a builtin type, return it. |
| if (const BuiltinType *BTy = dyn_cast<BuiltinType>(this)) |
| return BTy; |
| |
| // If the canonical form of this type isn't a builtin type, reject it. |
| if (!isa<BuiltinType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<BuiltinType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsBuiltinType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a builtin type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsBuiltinType(); |
| } |
| |
| const FunctionType *Type::getAsFunctionType() const { |
| // If this is directly a function type, return it. |
| if (const FunctionType *FTy = dyn_cast<FunctionType>(this)) |
| return FTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<FunctionType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<FunctionType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsFunctionType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a function type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsFunctionType(); |
| } |
| |
| const FunctionTypeProto *Type::getAsFunctionTypeProto() const { |
| return dyn_cast_or_null<FunctionTypeProto>(getAsFunctionType()); |
| } |
| |
| |
| const PointerLikeType *Type::getAsPointerLikeType() const { |
| // If this is directly a pointer-like type, return it. |
| if (const PointerLikeType *PTy = dyn_cast<PointerLikeType>(this)) |
| return PTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<PointerLikeType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<PointerLikeType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsPointerLikeType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a pointer type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsPointerLikeType(); |
| } |
| |
| const PointerType *Type::getAsPointerType() const { |
| // If this is directly a pointer type, return it. |
| if (const PointerType *PTy = dyn_cast<PointerType>(this)) |
| return PTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<PointerType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<PointerType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsPointerType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a pointer type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsPointerType(); |
| } |
| |
| const BlockPointerType *Type::getAsBlockPointerType() const { |
| // If this is directly a block pointer type, return it. |
| if (const BlockPointerType *PTy = dyn_cast<BlockPointerType>(this)) |
| return PTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<BlockPointerType>(CanonicalType)) |
| return 0; |
| |
| // If this is a typedef for a block pointer type, strip the typedef off |
| // without losing all typedef information. |
| return getDesugaredType()->getAsBlockPointerType(); |
| } |
| |
| const ReferenceType *Type::getAsReferenceType() const { |
| // If this is directly a reference type, return it. |
| if (const ReferenceType *RTy = dyn_cast<ReferenceType>(this)) |
| return RTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<ReferenceType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<ReferenceType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsReferenceType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a reference type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsReferenceType(); |
| } |
| |
| /// isVariablyModifiedType (C99 6.7.5p3) - Return true for variable length |
| /// array types and types that contain variable array types in their |
| /// declarator |
| bool Type::isVariablyModifiedType() const { |
| // A VLA is a variably modified type. |
| if (isVariableArrayType()) |
| return true; |
| |
| // An array can contain a variably modified type |
| if (const Type *T = getArrayElementTypeNoTypeQual()) |
| return T->isVariablyModifiedType(); |
| |
| // A pointer can point to a variably modified type |
| if (const PointerType* PT = getAsPointerType()) |
| return PT->getPointeeType()->isVariablyModifiedType(); |
| |
| // A function can return a variably modified type |
| // This one isn't completely obvious, but it follows from the |
| // definition in C99 6.7.5p3. Because of this rule, it's |
| // illegal to declare a function returning a variably modified type. |
| if (const FunctionType* FT = getAsFunctionType()) |
| return FT->getResultType()->isVariablyModifiedType(); |
| |
| return false; |
| } |
| |
| const RecordType *Type::getAsRecordType() const { |
| // If this is directly a reference type, return it. |
| if (const RecordType *RTy = dyn_cast<RecordType>(this)) |
| return RTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<RecordType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<RecordType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsRecordType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a record type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsRecordType(); |
| } |
| |
| const RecordType *Type::getAsStructureType() const { |
| // If this is directly a structure type, return it. |
| if (const RecordType *RT = dyn_cast<RecordType>(this)) { |
| if (RT->getDecl()->isStruct()) |
| return RT; |
| } |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) { |
| if (!RT->getDecl()->isStruct()) |
| return 0; |
| |
| // If this is a typedef for a structure type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsStructureType(); |
| } |
| // Look through type qualifiers |
| if (isa<RecordType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsStructureType(); |
| return 0; |
| } |
| |
| const RecordType *Type::getAsUnionType() const { |
| // If this is directly a union type, return it. |
| if (const RecordType *RT = dyn_cast<RecordType>(this)) { |
| if (RT->getDecl()->isUnion()) |
| return RT; |
| } |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (const RecordType *RT = dyn_cast<RecordType>(CanonicalType)) { |
| if (!RT->getDecl()->isUnion()) |
| return 0; |
| |
| // If this is a typedef for a union type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsUnionType(); |
| } |
| |
| // Look through type qualifiers |
| if (isa<RecordType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsUnionType(); |
| return 0; |
| } |
| |
| const EnumType *Type::getAsEnumType() const { |
| // Check the canonicalized unqualified type directly; the more complex |
| // version is unnecessary because there isn't any typedef information |
| // to preserve. |
| return dyn_cast<EnumType>(CanonicalType.getUnqualifiedType()); |
| } |
| |
| const ComplexType *Type::getAsComplexType() const { |
| // Are we directly a complex type? |
| if (const ComplexType *CTy = dyn_cast<ComplexType>(this)) |
| return CTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<ComplexType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<ComplexType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsComplexType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a complex type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsComplexType(); |
| } |
| |
| const VectorType *Type::getAsVectorType() const { |
| // Are we directly a vector type? |
| if (const VectorType *VTy = dyn_cast<VectorType>(this)) |
| return VTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<VectorType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<VectorType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsVectorType(); |
| return 0; |
| } |
| |
| // If this is a typedef for a vector type, strip the typedef off without |
| // losing all typedef information. |
| return getDesugaredType()->getAsVectorType(); |
| } |
| |
| const ExtVectorType *Type::getAsExtVectorType() const { |
| // Are we directly an OpenCU vector type? |
| if (const ExtVectorType *VTy = dyn_cast<ExtVectorType>(this)) |
| return VTy; |
| |
| // If the canonical form of this type isn't the right kind, reject it. |
| if (!isa<ExtVectorType>(CanonicalType)) { |
| // Look through type qualifiers |
| if (isa<ExtVectorType>(CanonicalType.getUnqualifiedType())) |
| return CanonicalType.getUnqualifiedType()->getAsExtVectorType(); |
| return 0; |
| } |
| |
| // If this is a typedef for an extended vector type, strip the typedef off |
| // without losing all typedef information. |
| return getDesugaredType()->getAsExtVectorType(); |
| } |
| |
| const ObjCInterfaceType *Type::getAsObjCInterfaceType() const { |
| // There is no sugar for ObjCInterfaceType's, just return the canonical |
| // type pointer if it is the right class. |
| return dyn_cast<ObjCInterfaceType>(CanonicalType); |
| } |
| |
| const ObjCQualifiedInterfaceType * |
| Type::getAsObjCQualifiedInterfaceType() const { |
| // There is no sugar for ObjCQualifiedInterfaceType's, just return the canonical |
| // type pointer if it is the right class. |
| return dyn_cast<ObjCQualifiedInterfaceType>(CanonicalType); |
| } |
| |
| const ObjCQualifiedIdType *Type::getAsObjCQualifiedIdType() const { |
| // There is no sugar for ObjCQualifiedIdType's, just return the canonical |
| // type pointer if it is the right class. |
| return dyn_cast<ObjCQualifiedIdType>(CanonicalType); |
| } |
| |
| const TemplateTypeParmType *Type::getAsTemplateTypeParmType() const { |
| // There is no sugar for template type parameters, so just return |
| // the canonical type pointer if it is the right class. |
| return dyn_cast<TemplateTypeParmType>(CanonicalType); |
| } |
| |
| bool Type::isIntegerType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Bool && |
| BT->getKind() <= BuiltinType::LongLong; |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) |
| // Incomplete enum types are not treated as integer types. |
| // FIXME: In C++, enum types are never integer types. |
| if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) |
| return true; |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isIntegerType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isIntegerType(); |
| return false; |
| } |
| |
| bool Type::isIntegralType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Bool && |
| BT->getKind() <= BuiltinType::LongLong; |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) |
| if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) |
| return true; // Complete enum types are integral. |
| // FIXME: In C++, enum types are never integral. |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isIntegralType(); |
| return false; |
| } |
| |
| bool Type::isEnumeralType() const { |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) |
| return TT->getDecl()->isEnum(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isEnumeralType(); |
| return false; |
| } |
| |
| bool Type::isBooleanType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() == BuiltinType::Bool; |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isBooleanType(); |
| return false; |
| } |
| |
| bool Type::isCharType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() == BuiltinType::Char_U || |
| BT->getKind() == BuiltinType::UChar || |
| BT->getKind() == BuiltinType::Char_S || |
| BT->getKind() == BuiltinType::SChar; |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isCharType(); |
| return false; |
| } |
| |
| bool Type::isWideCharType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() == BuiltinType::WChar; |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isWideCharType(); |
| return false; |
| } |
| |
| /// isSignedIntegerType - Return true if this is an integer type that is |
| /// signed, according to C99 6.2.5p4 [char, signed char, short, int, long..], |
| /// an enum decl which has a signed representation, or a vector of signed |
| /// integer element type. |
| bool Type::isSignedIntegerType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) { |
| return BT->getKind() >= BuiltinType::Char_S && |
| BT->getKind() <= BuiltinType::LongLong; |
| } |
| |
| if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) |
| return ET->getDecl()->getIntegerType()->isSignedIntegerType(); |
| |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isSignedIntegerType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isSignedIntegerType(); |
| return false; |
| } |
| |
| /// isUnsignedIntegerType - Return true if this is an integer type that is |
| /// unsigned, according to C99 6.2.5p6 [which returns true for _Bool], an enum |
| /// decl which has an unsigned representation, or a vector of unsigned integer |
| /// element type. |
| bool Type::isUnsignedIntegerType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) { |
| return BT->getKind() >= BuiltinType::Bool && |
| BT->getKind() <= BuiltinType::ULongLong; |
| } |
| |
| if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) |
| return ET->getDecl()->getIntegerType()->isUnsignedIntegerType(); |
| |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isUnsignedIntegerType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isUnsignedIntegerType(); |
| return false; |
| } |
| |
| bool Type::isFloatingType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Float && |
| BT->getKind() <= BuiltinType::LongDouble; |
| if (const ComplexType *CT = dyn_cast<ComplexType>(CanonicalType)) |
| return CT->getElementType()->isFloatingType(); |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isFloatingType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isFloatingType(); |
| return false; |
| } |
| |
| bool Type::isRealFloatingType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Float && |
| BT->getKind() <= BuiltinType::LongDouble; |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isRealFloatingType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isRealFloatingType(); |
| return false; |
| } |
| |
| bool Type::isRealType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Bool && |
| BT->getKind() <= BuiltinType::LongDouble; |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) |
| return TT->getDecl()->isEnum() && TT->getDecl()->isDefinition(); |
| if (const VectorType *VT = dyn_cast<VectorType>(CanonicalType)) |
| return VT->getElementType()->isRealType(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isRealType(); |
| return false; |
| } |
| |
| bool Type::isArithmeticType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() >= BuiltinType::Bool && |
| BT->getKind() <= BuiltinType::LongDouble; |
| if (const EnumType *ET = dyn_cast<EnumType>(CanonicalType)) |
| // GCC allows forward declaration of enum types (forbid by C99 6.7.2.3p2). |
| // If a body isn't seen by the time we get here, return false. |
| return ET->getDecl()->isDefinition(); |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isArithmeticType(); |
| return isa<ComplexType>(CanonicalType) || isa<VectorType>(CanonicalType); |
| } |
| |
| bool Type::isScalarType() const { |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType)) |
| return BT->getKind() != BuiltinType::Void; |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) { |
| // Enums are scalar types, but only if they are defined. Incomplete enums |
| // are not treated as scalar types. |
| if (TT->getDecl()->isEnum() && TT->getDecl()->isDefinition()) |
| return true; |
| return false; |
| } |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isScalarType(); |
| return isa<PointerType>(CanonicalType) || |
| isa<BlockPointerType>(CanonicalType) || |
| isa<ComplexType>(CanonicalType) || |
| isa<ObjCQualifiedIdType>(CanonicalType); |
| } |
| |
| bool Type::isAggregateType() const { |
| if (const TagType *TT = dyn_cast<TagType>(CanonicalType)) { |
| if (TT->getDecl()->isStruct()) |
| return true; |
| return false; |
| } |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isAggregateType(); |
| return isa<ArrayType>(CanonicalType); |
| } |
| |
| /// isConstantSizeType - Return true if this is not a variable sized type, |
| /// according to the rules of C99 6.7.5p3. It is not legal to call this on |
| /// incomplete types or dependent types. |
| bool Type::isConstantSizeType() const { |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isConstantSizeType(); |
| assert(!isIncompleteType() && "This doesn't make sense for incomplete types"); |
| assert(!isDependentType() && "This doesn't make sense for dependent types"); |
| // The VAT must have a size, as it is known to be complete. |
| return !isa<VariableArrayType>(CanonicalType); |
| } |
| |
| /// isIncompleteType - Return true if this is an incomplete type (C99 6.2.5p1) |
| /// - a type that can describe objects, but which lacks information needed to |
| /// determine its size. |
| bool Type::isIncompleteType() const { |
| switch (CanonicalType->getTypeClass()) { |
| default: return false; |
| case ASQual: |
| return cast<ASQualType>(CanonicalType)->getBaseType()->isIncompleteType(); |
| case Builtin: |
| // Void is the only incomplete builtin type. Per C99 6.2.5p19, it can never |
| // be completed. |
| return isVoidType(); |
| case Tagged: |
| // A tagged type (struct/union/enum/class) is incomplete if the decl is a |
| // forward declaration, but not a full definition (C99 6.2.5p22). |
| return !cast<TagType>(CanonicalType)->getDecl()->isDefinition(); |
| case IncompleteArray: |
| // An array of unknown size is an incomplete type (C99 6.2.5p22). |
| return true; |
| } |
| } |
| |
| bool Type::isPromotableIntegerType() const { |
| if (const ASQualType *ASQT = dyn_cast<ASQualType>(CanonicalType)) |
| return ASQT->getBaseType()->isPromotableIntegerType(); |
| const BuiltinType *BT = dyn_cast<BuiltinType>(CanonicalType); |
| if (!BT) return false; |
| switch (BT->getKind()) { |
| case BuiltinType::Bool: |
| case BuiltinType::Char_S: |
| case BuiltinType::Char_U: |
| case BuiltinType::SChar: |
| case BuiltinType::UChar: |
| case BuiltinType::Short: |
| case BuiltinType::UShort: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| const char *BuiltinType::getName() const { |
| switch (getKind()) { |
| default: assert(0 && "Unknown builtin type!"); |
| case Void: return "void"; |
| case Bool: return "_Bool"; |
| case Char_S: return "char"; |
| case Char_U: return "char"; |
| case SChar: return "signed char"; |
| case Short: return "short"; |
| case Int: return "int"; |
| case Long: return "long"; |
| case LongLong: return "long long"; |
| case UChar: return "unsigned char"; |
| case UShort: return "unsigned short"; |
| case UInt: return "unsigned int"; |
| case ULong: return "unsigned long"; |
| case ULongLong: return "unsigned long long"; |
| case Float: return "float"; |
| case Double: return "double"; |
| case LongDouble: return "long double"; |
| case WChar: return "wchar_t"; |
| case Overload: return "<overloaded function type>"; |
| case Dependent: return "<dependent type>"; |
| } |
| } |
| |
| void FunctionTypeProto::Profile(llvm::FoldingSetNodeID &ID, QualType Result, |
| arg_type_iterator ArgTys, |
| unsigned NumArgs, bool isVariadic, |
| unsigned TypeQuals) { |
| ID.AddPointer(Result.getAsOpaquePtr()); |
| for (unsigned i = 0; i != NumArgs; ++i) |
| ID.AddPointer(ArgTys[i].getAsOpaquePtr()); |
| ID.AddInteger(isVariadic); |
| ID.AddInteger(TypeQuals); |
| } |
| |
| void FunctionTypeProto::Profile(llvm::FoldingSetNodeID &ID) { |
| Profile(ID, getResultType(), arg_type_begin(), NumArgs, isVariadic(), |
| getTypeQuals()); |
| } |
| |
| void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID, |
| const ObjCInterfaceDecl *Decl, |
| ObjCProtocolDecl **protocols, |
| unsigned NumProtocols) { |
| ID.AddPointer(Decl); |
| for (unsigned i = 0; i != NumProtocols; i++) |
| ID.AddPointer(protocols[i]); |
| } |
| |
| void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID) { |
| Profile(ID, getDecl(), &Protocols[0], getNumProtocols()); |
| } |
| |
| void ObjCQualifiedIdType::Profile(llvm::FoldingSetNodeID &ID, |
| ObjCProtocolDecl **protocols, |
| unsigned NumProtocols) { |
| for (unsigned i = 0; i != NumProtocols; i++) |
| ID.AddPointer(protocols[i]); |
| } |
| |
| void ObjCQualifiedIdType::Profile(llvm::FoldingSetNodeID &ID) { |
| Profile(ID, &Protocols[0], getNumProtocols()); |
| } |
| |
| /// LookThroughTypedefs - Return the ultimate type this typedef corresponds to |
| /// potentially looking through *all* consequtive typedefs. This returns the |
| /// sum of the type qualifiers, so if you have: |
| /// typedef const int A; |
| /// typedef volatile A B; |
| /// looking through the typedefs for B will give you "const volatile A". |
| /// |
| QualType TypedefType::LookThroughTypedefs() const { |
| // Usually, there is only a single level of typedefs, be fast in that case. |
| QualType FirstType = getDecl()->getUnderlyingType(); |
| if (!isa<TypedefType>(FirstType)) |
| return FirstType; |
| |
| // Otherwise, do the fully general loop. |
| unsigned TypeQuals = 0; |
| const TypedefType *TDT = this; |
| while (1) { |
| QualType CurType = TDT->getDecl()->getUnderlyingType(); |
| |
| |
| /// FIXME: |
| /// FIXME: This is incorrect for ASQuals! |
| /// FIXME: |
| TypeQuals |= CurType.getCVRQualifiers(); |
| |
| TDT = dyn_cast<TypedefType>(CurType); |
| if (TDT == 0) |
| return QualType(CurType.getTypePtr(), TypeQuals); |
| } |
| } |
| |
| TypeOfExpr::TypeOfExpr(Expr *E, QualType can) |
| : Type(TypeOfExp, can, E->isTypeDependent()), TOExpr(E) { |
| assert(!isa<TypedefType>(can) && "Invalid canonical type"); |
| } |
| |
| bool RecordType::classof(const TagType *TT) { |
| return isa<RecordDecl>(TT->getDecl()); |
| } |
| |
| bool CXXRecordType::classof(const TagType *TT) { |
| return isa<CXXRecordDecl>(TT->getDecl()); |
| } |
| |
| bool EnumType::classof(const TagType *TT) { |
| return isa<EnumDecl>(TT->getDecl()); |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Type Printing |
| //===----------------------------------------------------------------------===// |
| |
| void QualType::dump(const char *msg) const { |
| std::string R = "identifier"; |
| getAsStringInternal(R); |
| if (msg) |
| fprintf(stderr, "%s: %s\n", msg, R.c_str()); |
| else |
| fprintf(stderr, "%s\n", R.c_str()); |
| } |
| void QualType::dump() const { |
| dump(""); |
| } |
| |
| void Type::dump() const { |
| std::string S = "identifier"; |
| getAsStringInternal(S); |
| fprintf(stderr, "%s\n", S.c_str()); |
| } |
| |
| |
| |
| static void AppendTypeQualList(std::string &S, unsigned TypeQuals) { |
| // Note: funkiness to ensure we get a space only between quals. |
| bool NonePrinted = true; |
| if (TypeQuals & QualType::Const) |
| S += "const", NonePrinted = false; |
| if (TypeQuals & QualType::Volatile) |
| S += (NonePrinted+" volatile"), NonePrinted = false; |
| if (TypeQuals & QualType::Restrict) |
| S += (NonePrinted+" restrict"), NonePrinted = false; |
| } |
| |
| void QualType::getAsStringInternal(std::string &S) const { |
| if (isNull()) { |
| S += "NULL TYPE\n"; |
| return; |
| } |
| |
| // Print qualifiers as appropriate. |
| if (unsigned Tq = getCVRQualifiers()) { |
| std::string TQS; |
| AppendTypeQualList(TQS, Tq); |
| if (!S.empty()) |
| S = TQS + ' ' + S; |
| else |
| S = TQS; |
| } |
| |
| getTypePtr()->getAsStringInternal(S); |
| } |
| |
| void BuiltinType::getAsStringInternal(std::string &S) const { |
| if (S.empty()) { |
| S = getName(); |
| } else { |
| // Prefix the basic type, e.g. 'int X'. |
| S = ' ' + S; |
| S = getName() + S; |
| } |
| } |
| |
| void ComplexType::getAsStringInternal(std::string &S) const { |
| ElementType->getAsStringInternal(S); |
| S = "_Complex " + S; |
| } |
| |
| void ASQualType::getAsStringInternal(std::string &S) const { |
| S = "__attribute__((address_space("+llvm::utostr_32(AddressSpace)+")))" + S; |
| BaseType->getAsStringInternal(S); |
| } |
| |
| void PointerType::getAsStringInternal(std::string &S) const { |
| S = '*' + S; |
| |
| // Handle things like 'int (*A)[4];' correctly. |
| // FIXME: this should include vectors, but vectors use attributes I guess. |
| if (isa<ArrayType>(getPointeeType())) |
| S = '(' + S + ')'; |
| |
| getPointeeType().getAsStringInternal(S); |
| } |
| |
| void BlockPointerType::getAsStringInternal(std::string &S) const { |
| S = '^' + S; |
| PointeeType.getAsStringInternal(S); |
| } |
| |
| void ReferenceType::getAsStringInternal(std::string &S) const { |
| S = '&' + S; |
| |
| // Handle things like 'int (&A)[4];' correctly. |
| // FIXME: this should include vectors, but vectors use attributes I guess. |
| if (isa<ArrayType>(getPointeeType())) |
| S = '(' + S + ')'; |
| |
| getPointeeType().getAsStringInternal(S); |
| } |
| |
| void ConstantArrayType::getAsStringInternal(std::string &S) const { |
| S += '['; |
| S += llvm::utostr(getSize().getZExtValue()); |
| S += ']'; |
| |
| getElementType().getAsStringInternal(S); |
| } |
| |
| void IncompleteArrayType::getAsStringInternal(std::string &S) const { |
| S += "[]"; |
| |
| getElementType().getAsStringInternal(S); |
| } |
| |
| void VariableArrayType::getAsStringInternal(std::string &S) const { |
| S += '['; |
| |
| if (getIndexTypeQualifier()) { |
| AppendTypeQualList(S, getIndexTypeQualifier()); |
| S += ' '; |
| } |
| |
| if (getSizeModifier() == Static) |
| S += "static"; |
| else if (getSizeModifier() == Star) |
| S += '*'; |
| |
| if (getSizeExpr()) { |
| std::string SStr; |
| llvm::raw_string_ostream s(SStr); |
| getSizeExpr()->printPretty(s); |
| S += s.str(); |
| } |
| S += ']'; |
| |
| getElementType().getAsStringInternal(S); |
| } |
| |
| void DependentSizedArrayType::getAsStringInternal(std::string &S) const { |
| S += '['; |
| |
| if (getIndexTypeQualifier()) { |
| AppendTypeQualList(S, getIndexTypeQualifier()); |
| S += ' '; |
| } |
| |
| if (getSizeModifier() == Static) |
| S += "static"; |
| else if (getSizeModifier() == Star) |
| S += '*'; |
| |
| if (getSizeExpr()) { |
| std::string SStr; |
| llvm::raw_string_ostream s(SStr); |
| getSizeExpr()->printPretty(s); |
| S += s.str(); |
| } |
| S += ']'; |
| |
| getElementType().getAsStringInternal(S); |
| } |
| |
| void VectorType::getAsStringInternal(std::string &S) const { |
| // FIXME: We prefer to print the size directly here, but have no way |
| // to get the size of the type. |
| S += " __attribute__((__vector_size__("; |
| S += llvm::utostr_32(NumElements); // convert back to bytes. |
| S += " * sizeof(" + ElementType.getAsString() + "))))"; |
| } |
| |
| void ExtVectorType::getAsStringInternal(std::string &S) const { |
| S += " __attribute__((ext_vector_type("; |
| S += llvm::utostr_32(NumElements); |
| S += ")))"; |
| ElementType.getAsStringInternal(S); |
| } |
| |
| void TypeOfExpr::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typeof(e) X'. |
| InnerString = ' ' + InnerString; |
| std::string Str; |
| llvm::raw_string_ostream s(Str); |
| getUnderlyingExpr()->printPretty(s); |
| InnerString = "typeof(" + s.str() + ")" + InnerString; |
| } |
| |
| void TypeOfType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typeof(t) X'. |
| InnerString = ' ' + InnerString; |
| std::string Tmp; |
| getUnderlyingType().getAsStringInternal(Tmp); |
| InnerString = "typeof(" + Tmp + ")" + InnerString; |
| } |
| |
| void FunctionTypeNoProto::getAsStringInternal(std::string &S) const { |
| // If needed for precedence reasons, wrap the inner part in grouping parens. |
| if (!S.empty()) |
| S = "(" + S + ")"; |
| |
| S += "()"; |
| getResultType().getAsStringInternal(S); |
| } |
| |
| void FunctionTypeProto::getAsStringInternal(std::string &S) const { |
| // If needed for precedence reasons, wrap the inner part in grouping parens. |
| if (!S.empty()) |
| S = "(" + S + ")"; |
| |
| S += "("; |
| std::string Tmp; |
| for (unsigned i = 0, e = getNumArgs(); i != e; ++i) { |
| if (i) S += ", "; |
| getArgType(i).getAsStringInternal(Tmp); |
| S += Tmp; |
| Tmp.clear(); |
| } |
| |
| if (isVariadic()) { |
| if (getNumArgs()) |
| S += ", "; |
| S += "..."; |
| } else if (getNumArgs() == 0) { |
| // Do not emit int() if we have a proto, emit 'int(void)'. |
| S += "void"; |
| } |
| |
| S += ")"; |
| getResultType().getAsStringInternal(S); |
| } |
| |
| |
| void TypedefType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. |
| InnerString = ' ' + InnerString; |
| InnerString = getDecl()->getIdentifier()->getName() + InnerString; |
| } |
| |
| void TemplateTypeParmType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'parmname X'. |
| InnerString = ' ' + InnerString; |
| InnerString = getDecl()->getIdentifier()->getName() + InnerString; |
| } |
| |
| void ObjCInterfaceType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. |
| InnerString = ' ' + InnerString; |
| InnerString = getDecl()->getIdentifier()->getName() + InnerString; |
| } |
| |
| void ObjCQualifiedInterfaceType::getAsStringInternal( |
| std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. |
| InnerString = ' ' + InnerString; |
| std::string ObjCQIString = getDecl()->getNameAsString(); |
| ObjCQIString += '<'; |
| bool isFirst = true; |
| for (qual_iterator I = qual_begin(), E = qual_end(); I != E; ++I) { |
| if (isFirst) |
| isFirst = false; |
| else |
| ObjCQIString += ','; |
| ObjCQIString += (*I)->getNameAsString(); |
| } |
| ObjCQIString += '>'; |
| InnerString = ObjCQIString + InnerString; |
| } |
| |
| void ObjCQualifiedIdType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. |
| InnerString = ' ' + InnerString; |
| std::string ObjCQIString = "id"; |
| ObjCQIString += '<'; |
| int num = getNumProtocols(); |
| for (int i = 0; i < num; i++) { |
| ObjCQIString += getProtocols(i)->getNameAsString(); |
| if (i < num-1) |
| ObjCQIString += ','; |
| } |
| ObjCQIString += '>'; |
| InnerString = ObjCQIString + InnerString; |
| } |
| |
| void TagType::getAsStringInternal(std::string &InnerString) const { |
| if (!InnerString.empty()) // Prefix the basic type, e.g. 'typedefname X'. |
| InnerString = ' ' + InnerString; |
| |
| const char *Kind = getDecl()->getKindName(); |
| const char *ID; |
| if (const IdentifierInfo *II = getDecl()->getIdentifier()) |
| ID = II->getName(); |
| else |
| ID = "<anonymous>"; |
| |
| InnerString = std::string(Kind) + " " + ID + InnerString; |
| } |