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Showing content from https://clang.llvm.org/doxygen/VTableBuilder_8h_source.html below:

clang: include/clang/AST/VTableBuilder.h Source File

assert(!isa<CXXDestructorDecl>(MD) &&

);

assert(!isa<CXXDestructorDecl>(MD) &&

);

assert(

() &&

);

);

llvm_unreachable(

);

llvm_unreachable(

);

ComponentKind ==

;

assert(Offset.getQuantity() < (1LL << 56) &&

);

assert(Offset.getQuantity() >= -(1LL << 56) &&

);

= (

(Offset.getQuantity()) << 3) | ComponentKind;

);

assert((Ptr & 7) == 0 &&

);

= Ptr | ComponentKind;

CharUnits getOffset()

{

);

llvm::DenseMap<BaseSubobject, AddressPointLocation>

VTableComponents;

assert(AddressPoints.count(

) &&

);

AddressPoints.lookup(

);

AddressPoints;

AddressPointIndices;

(VTableIndices.empty())

VTableIndices.size();

(VTableIndices.empty()) {

VTableIndices[i];

(VTableIndices.empty()) {

thisIndex = VTableIndices[i];

nextIndex = (i + 1 == VTableIndices.size())

: VTableIndices[i + 1];

nextIndex - thisIndex;

llvm::DenseMap<const CXXMethodDecl *, ThunkInfoVectorTy>

;

ThunksMapTy::const_iterator I =

.find(MD);

llvm::DenseMap<const CXXMethodDecl *, const CXXMethodDecl *>

llvm::DenseMap<GlobalDecl, int64_t> MethodVTableIndicesTy;

MethodVTableIndicesTy MethodVTableIndices;

std::unique_ptr<const VTableLayout>>

VTableLayoutMapTy VTableLayouts;

llvm::DenseMap<ClassPairTy, CharUnits>

VirtualBaseClassOffsetOffsetsMapTy;

VirtualBaseClassOffsetOffsetsMapTy VirtualBaseClassOffsetOffsets;

computeVTableRelatedInformation(

*RD)

;

computeVTableRelatedInformation(RD);

assert(VTableLayouts.count(RD) &&

);

*VTableLayouts[RD];

MostDerivedClassIsVirtual,

*LayoutClass);

OriginalMethodMap[Key] = Val;

OriginalMethodMap;

ComponentLayout;

llvm::DenseMap<GlobalDecl, MethodVFTableLocation>

MethodVFTableLocationsTy;

MethodVFTableLocationsTy MethodVFTableLocations;

llvm::DenseMap<const CXXRecordDecl *, std::unique_ptr<VPtrInfoVector>>

VFPtrLocationsMapTy VFPtrLocations;

std::pair<const CXXRecordDecl *, CharUnits> VFTableIdTy;

llvm::DenseMap<VFTableIdTy, std::unique_ptr<const VTableLayout>>

VFTableLayoutMapTy VFTableLayouts;

llvm::DenseMap<const CXXRecordDecl *, std::unique_ptr<VirtualBaseInfo>>

computeVTableRelatedInformation(

*RD)

;

MethodVFTableLocationsTy &NewMethods,

computeVTablePaths(

ForVBTables,

*RD,

(isa<CXXDestructorDecl>(GD.

()) &&

Enums/classes describing ABI related information about constructors, destructors and thunks.

Enums/classes describing THUNK related information about constructors, destructors and thunks.

Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...

Represents a C++ destructor within a class.

Represents a static or instance method of a struct/union/class.

const CXXRecordDecl * getParent() const

Return the parent of this method declaration, which is the class in which this method is defined.

Represents a C++ struct/union/class.

CharUnits - This is an opaque type for sizes expressed in character units.

static CharUnits fromQuantity(QuantityType Quantity)

fromQuantity - Construct a CharUnits quantity from a raw integer type.

virtual Decl * getCanonicalDecl()

Retrieves the "canonical" declaration of the given declaration.

GlobalDecl - represents a global declaration.

CXXDtorType getDtorType() const

const Decl * getDecl() const

@ Relative

Components in the vtable are relative offsets between the vtable and the other structs/functions.

@ Pointer

Components in the vtable are pointers to other structs/functions.

bool isPointerLayout() const

const CXXMethodDecl * findOriginalMethodInMap(const CXXMethodDecl *MD) const

const OriginalMethodMapTy & getOriginalMethodMap()

This method is reserved for the implementation and shouldn't be used directly.

VTableComponentLayout getVTableComponentLayout() const

uint64_t getMethodVTableIndex(GlobalDecl GD)

Locate a virtual function in the vtable.

llvm::DenseMap< const CXXMethodDecl *, const CXXMethodDecl * > OriginalMethodMapTy

bool isRelativeLayout() const

std::unique_ptr< VTableLayout > createConstructionVTableLayout(const CXXRecordDecl *MostDerivedClass, CharUnits MostDerivedClassOffset, bool MostDerivedClassIsVirtual, const CXXRecordDecl *LayoutClass)

~ItaniumVTableContext() override

const VTableLayout & getVTableLayout(const CXXRecordDecl *RD)

CharUnits getVirtualBaseOffsetOffset(const CXXRecordDecl *RD, const CXXRecordDecl *VBase)

Return the offset in chars (relative to the vtable address point) where the offset of the virtual bas...

GlobalDecl findOriginalMethod(GlobalDecl GD)

Return the method that added the v-table slot that will be used to call the given method.

void setOriginalMethod(const CXXMethodDecl *Key, const CXXMethodDecl *Val)

static bool classof(const VTableContextBase *VT)

static bool classof(const VTableContextBase *VT)

const ThunkInfoVectorTy * getThunkInfo(GlobalDecl GD) override

MicrosoftVTableContext(ASTContext &Context)

unsigned getVBTableIndex(const CXXRecordDecl *Derived, const CXXRecordDecl *VBase)

Returns the index of VBase in the vbtable of Derived.

const VPtrInfoVector & enumerateVBTables(const CXXRecordDecl *RD)

MethodVFTableLocation getMethodVFTableLocation(GlobalDecl GD)

const VPtrInfoVector & getVFPtrOffsets(const CXXRecordDecl *RD)

const VTableLayout & getVFTableLayout(const CXXRecordDecl *RD, CharUnits VFPtrOffset)

~MicrosoftVTableContext() override

Represents a single component in a vtable.

VTableComponent()=default

static VTableComponent MakeCompleteDtor(const CXXDestructorDecl *DD)

static VTableComponent MakeRTTI(const CXXRecordDecl *RD)

GlobalDecl getGlobalDecl() const

const CXXMethodDecl * getUnusedFunctionDecl() const

static VTableComponent MakeOffsetToTop(CharUnits Offset)

bool isUsedFunctionPointerKind() const

bool isDestructorKind() const

CharUnits getVBaseOffset() const

static VTableComponent MakeUnusedFunction(const CXXMethodDecl *MD)

Kind getKind() const

Get the kind of this vtable component.

static VTableComponent MakeFunction(const CXXMethodDecl *MD)

@ CK_DeletingDtorPointer

A pointer to the deleting destructor.

@ CK_UnusedFunctionPointer

An entry that is never used.

@ CK_CompleteDtorPointer

A pointer to the complete destructor.

static VTableComponent MakeVBaseOffset(CharUnits Offset)

const CXXRecordDecl * getRTTIDecl() const

static VTableComponent MakeDeletingDtor(const CXXDestructorDecl *DD)

bool isFunctionPointerKind() const

CharUnits getOffsetToTop() const

const CXXMethodDecl * getFunctionDecl() const

static VTableComponent MakeVCallOffset(CharUnits Offset)

CharUnits getVCallOffset() const

const CXXDestructorDecl * getDestructorDecl() const

virtual const ThunkInfoVectorTy * getThunkInfo(GlobalDecl GD)

VTableContextBase(bool MS)

static bool hasVtableSlot(const CXXMethodDecl *MD)

Determine whether this function should be assigned a vtable slot.

virtual ~VTableContextBase()

virtual void computeVTableRelatedInformation(const CXXRecordDecl *RD)=0

Compute and store all vtable related information (vtable layout, vbase offset offsets,...

SmallVector< ThunkInfo, 1 > ThunkInfoVectorTy

llvm::DenseMap< const CXXMethodDecl *, ThunkInfoVectorTy > ThunksMapTy

ThunksMapTy Thunks

Contains all thunks that a given method decl will need.

const AddressPointsIndexMapTy & getAddressPointIndices() const

size_t getVTableOffset(size_t i) const

llvm::SmallVector< unsigned, 4 > AddressPointsIndexMapTy

llvm::DenseMap< BaseSubobject, AddressPointLocation > AddressPointsMapTy

AddressPointLocation getAddressPoint(BaseSubobject Base) const

std::pair< uint64_t, ThunkInfo > VTableThunkTy

ArrayRef< VTableComponent > vtable_components() const

size_t getNumVTables() const

ArrayRef< VTableThunkTy > vtable_thunks() const

const AddressPointsMapTy & getAddressPoints() const

size_t getVTableSize(size_t i) const

The JSON file list parser is used to communicate input to InstallAPI.

SmallVector< std::unique_ptr< VPtrInfo >, 2 > VPtrInfoVector

@ Dtor_Complete

Complete object dtor.

@ Dtor_Deleting

Deleting dtor.

__UINTPTR_TYPE__ uintptr_t

An unsigned integer type with the property that any valid pointer to void can be converted to this ty...

bool operator<(const MethodVFTableLocation &other) const

const CXXRecordDecl * VBase

If nonnull, holds the last vbase which contains the vfptr that the method definition is adjusted to.

MethodVFTableLocation(uint64_t VBTableIndex, const CXXRecordDecl *VBase, CharUnits VFPtrOffset, uint64_t Index)

CharUnits VFPtrOffset

This is the offset of the vfptr from the start of the last vbase, or the complete type if there are n...

uint64_t VBTableIndex

If nonzero, holds the vbtable index of the virtual base with the vfptr.

uint64_t Index

Method's index in the vftable.

Holds information about the inheritance path to a virtual base or function table pointer.

CharUnits NonVirtualOffset

IntroducingObject is at this offset from its containing complete object or virtual base.

CharUnits FullOffsetInMDC

Static offset from the top of the most derived class to this vfptr, including any virtual base offset...

const CXXRecordDecl * getVBaseWithVPtr() const

The vptr is stored inside the non-virtual component of this virtual base.

SmallVector< const CXXRecordDecl *, 1 > BasePath

VPtrInfo(const CXXRecordDecl *RD)

BasePath ContainingVBases

The set of possibly indirect vbases that contain this vbtable.

const CXXRecordDecl * IntroducingObject

This is the class that introduced the vptr by declaring new virtual methods or virtual bases.

BasePath MangledPath

The bases from the inheritance path that got used to mangle the vbtable name.

const CXXRecordDecl * NextBaseToMangle

The next base to push onto the mangled path if this path is ambiguous in a derived class.

BasePath PathToIntroducingObject

This holds the base classes path from the complete type to the first base with the given vfptr offset...

const CXXRecordDecl * ObjectWithVPtr

This is the most derived class that has this vptr at offset zero.

unsigned AddressPointIndex

All virtual base related information about a given record decl.

VPtrInfoVector VBPtrPaths

Information on all virtual base tables used when this record is the most derived class.

llvm::DenseMap< const CXXRecordDecl *, unsigned > VBTableIndices

A map from virtual base to vbtable index for doing a conversion from the the derived class to the a b...

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