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

#include "clang/AST/VTableBuilder.h"

Public Types
typedef SmallVector< const CXXRecordDecl *, 1 >	BasePath

Public Member Functions
	VPtrInfo (const CXXRecordDecl *RD)
const CXXRecordDecl *	getVBaseWithVPtr () const
	The vptr is stored inside the non-virtual component of this virtual base.

Public Attributes
const CXXRecordDecl *	ObjectWithVPtr
	This is the most derived class that has this vptr at offset zero.
const CXXRecordDecl *	IntroducingObject
	This is the class that introduced the vptr by declaring new virtual methods or virtual bases.
CharUnits	NonVirtualOffset
	IntroducingObject is at this offset from its containing complete object or virtual base.
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	ContainingVBases
	The set of possibly indirect vbases that contain this vbtable.
BasePath	PathToIntroducingObject
	This holds the base classes path from the complete type to the first base with the given vfptr offset, in the base-to-derived order.
CharUnits	FullOffsetInMDC
	Static offset from the top of the most derived class to this vfptr, including any virtual base offset.

Detailed Description

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

A record may contain as many vfptrs or vbptrs as there are base subobjects.

Definition at line 464 of file VTableBuilder.h.

Member Typedef Documentation

◆ BasePath

typedef SmallVector<const CXXRecordDecl *, 1> clang::VPtrInfo::BasePath

Definition at line 465 of file VTableBuilder.h.

Constructor & Destructor Documentation

◆ VPtrInfo()

clang::VPtrInfo::VPtrInfo ( const CXXRecordDecl * RD )

inline

Definition at line 467 of file VTableBuilder.h.

References IntroducingObject, NextBaseToMangle, and ObjectWithVPtr.

Member Function Documentation

◆ getVBaseWithVPtr()

const CXXRecordDecl * clang::VPtrInfo::getVBaseWithVPtr ( ) const

inline

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

Definition at line 508 of file VTableBuilder.h.

References ContainingVBases, and clang::nullptr.

Member Data Documentation

◆ ContainingVBases

BasePath clang::VPtrInfo::ContainingVBases

The set of possibly indirect vbases that contain this vbtable.

When a derived class indirectly inherits from the same vbase twice, we only keep vtables and their paths from the first instance.

Definition at line 496 of file VTableBuilder.h.

Referenced by getVBaseWithVPtr().

◆ FullOffsetInMDC

CharUnits clang::VPtrInfo::FullOffsetInMDC

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

Only used for vftables.

Definition at line 505 of file VTableBuilder.h.

◆ IntroducingObject

const CXXRecordDecl* clang::VPtrInfo::IntroducingObject

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

Definition at line 477 of file VTableBuilder.h.

Referenced by selectBestPath(), and VPtrInfo().

◆ MangledPath

BasePath clang::VPtrInfo::MangledPath

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

This is not really a full path like a CXXBasePath. It holds the subset of records that need to be mangled into the vbtable symbol name in order to get a unique name.

Definition at line 487 of file VTableBuilder.h.

Referenced by extendPath(), mangleVFTableName(), and rebucketPaths().

◆ NextBaseToMangle

const CXXRecordDecl* clang::VPtrInfo::NextBaseToMangle

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

If it's null, then it's already been pushed onto the path.

Definition at line 491 of file VTableBuilder.h.

Referenced by extendPath(), and VPtrInfo().

◆ NonVirtualOffset

CharUnits clang::VPtrInfo::NonVirtualOffset

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

Definition at line 481 of file VTableBuilder.h.

◆ ObjectWithVPtr

const CXXRecordDecl* clang::VPtrInfo::ObjectWithVPtr

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

When single inheritance is used, this is always the most derived class. If multiple inheritance is used, it may be any direct or indirect base.

Definition at line 473 of file VTableBuilder.h.

Referenced by VPtrInfo().

◆ PathToIntroducingObject

BasePath clang::VPtrInfo::PathToIntroducingObject

This holds the base classes path from the complete type to the first base with the given vfptr offset, in the base-to-derived order.