A pointer to a memory block, live or dead. More...

#include "/opt/doxygen-docs/src/llvm/tools/clang/lib/AST/Interp/Pointer.h"

Public Member Functions
	Pointer ()

	Pointer (Block *B)

	Pointer (const Pointer &P)

	Pointer (Pointer &&P)

	~Pointer ()

void	operator= (const Pointer &P)

void	operator= (Pointer &&P)

APValue	toAPValue () const
	Converts the pointer to an APValue. More...

Pointer	atIndex (unsigned Idx) const
	Offsets a pointer inside an array. More...

Pointer	atField (unsigned Off) const
	Creates a pointer to a field. More...

Pointer	narrow () const
	Restricts the scope of an array element pointer. More...

Pointer	expand () const
	Expands a pointer to the containing array, undoing narrowing. More...

bool	isZero () const
	Checks if the pointer is null. More...

bool	isLive () const
	Checks if the pointer is live. More...

bool	isField () const
	Checks if the item is a field in an object. More...

Descriptor *	getDeclDesc () const
	Accessor for information about the declaration site. More...

SourceLocation	getDeclLoc () const

Pointer	getBase () const
	Returns a pointer to the object of which this pointer is a field. More...

Pointer	getArray () const
	Returns the parent array. More...

Descriptor *	getFieldDesc () const
	Accessors for information about the innermost field. More...

QualType	getType () const
	Returns the type of the innermost field. More...

size_t	elemSize () const
	Returns the element size of the innermost field. More...

size_t	getSize () const
	Returns the total size of the innermost field. More...

unsigned	getOffset () const
	Returns the offset into an array. More...

bool	inArray () const
	Checks if the innermost field is an array. More...

bool	inPrimitiveArray () const
	Checks if the structure is a primitive array. More...

bool	isUnknownSizeArray () const
	Checks if the structure is an array of unknown size. More...

bool	isArrayElement () const
	Checks if the pointer points to an array. More...

bool	isRoot () const
	Pointer points directly to a block. More...

Record *	getRecord () const
	Returns the record descriptor of a class. More...

const FieldDecl *	getField () const
	Returns the field information. More...

bool	isUnion () const
	Checks if the object is a union. More...

bool	isExtern () const
	Checks if the storage is extern. More...

bool	isStatic () const
	Checks if the storage is static. More...

bool	isTemporary () const
	Checks if the storage is temporary. More...

bool	isStaticTemporary () const
	Checks if the storage is a static temporary. More...

bool	isMutable () const
	Checks if the field is mutable. More...

bool	isInitialized () const
	Checks if an object was initialized. More...

bool	isActive () const
	Checks if the object is active. More...

bool	isBaseClass () const
	Checks if a structure is a base class. More...

bool	isConst () const
	Checks if an object or a subfield is mutable. More...

llvm::Optional< unsigned >	getDeclID () const
	Returns the declaration ID. More...

unsigned	getByteOffset () const
	Returns the byte offset from the start. More...

unsigned	getNumElems () const
	Returns the number of elements. More...

int64_t	getIndex () const
	Returns the index into an array. More...

bool	isOnePastEnd () const
	Checks if the index is one past end. More...

bool	isElementPastEnd () const
	Checks if the pointer is an out-of-bounds element pointer. More...

template<typename T >
T &	deref () const
	Dereferences the pointer, if it's live. More...

template<typename T >
T &	elem (unsigned I) const
	Dereferences a primitive element. More...

void	initialize () const
	Initializes a field. More...

void	activate () const
	Activats a field. More...

void	deactivate () const
	Deactivates an entire strurcutre. More...

void	print (llvm::raw_ostream &OS) const
	Prints the pointer. More...

Static Public Member Functions
static bool	hasSameBase (const Pointer &A, const Pointer &B)
	Checks if two pointers are comparable. More...

static bool	hasSameArray (const Pointer &A, const Pointer &B)
	Checks if two pointers can be subtracted. More...

Friends
class	Block

class	DeadBlock

Detailed Description

A pointer to a memory block, live or dead.

This object can be allocated into interpreter stack frames. If pointing to a live block, it is a link in the chain of pointers pointing to the block.

Definition at line 39 of file Pointer.h.

Constructor & Destructor Documentation

◆ Pointer() [1/4]

clang::interp::Pointer::Pointer ( )

inline

Definition at line 45 of file Pointer.h.

References operator=(), P, toAPValue(), and ~Pointer().

Referenced by atField(), atIndex(), expand(), getArray(), getBase(), narrow(), and Pointer().

◆ Pointer() [2/4]

Pointer::Pointer ( Block * B )

Definition at line 17 of file Pointer.cpp.

◆ Pointer() [3/4]

Pointer::Pointer ( const Pointer & P )

Definition at line 19 of file Pointer.cpp.

◆ Pointer() [4/4]

Pointer::Pointer ( Pointer && P )

Definition at line 21 of file Pointer.cpp.

References clang::interp::Block::addPointer(), clang::interp::Block::movePointer(), P, and Pointer().

◆ ~Pointer()

Pointer::~Pointer ( )

Definition at line 34 of file Pointer.cpp.

References clang::interp::Block::cleanup(), and clang::interp::Block::removePointer().

Referenced by Pointer().

Member Function Documentation

◆ activate()

void Pointer::activate ( ) const

Activats a field.

Definition at line 177 of file Pointer.cpp.

References clang::interp::InlineDescriptor::IsActive.

Referenced by elem(), clang::interp::GetPtrActiveField(), clang::interp::GetPtrActiveThisField(), and clang::interp::InitThisFieldActive().

◆ atField()

Pointer clang::interp::Pointer::atField ( unsigned Off ) const

inline

Creates a pointer to a field.

Definition at line 70 of file Pointer.h.

References Pointer().

Referenced by clang::interp::EvalEmitter::fallthrough(), clang::interp::GetField(), clang::interp::GetFieldPop(), clang::interp::GetPtrActiveField(), clang::interp::GetPtrActiveThisField(), clang::interp::GetPtrBase(), clang::interp::GetPtrField(), clang::interp::GetPtrThisBase(), clang::interp::GetPtrThisField(), clang::interp::GetThisField(), clang::interp::InitThisBitField(), clang::interp::InitThisField(), clang::interp::InitThisFieldActive(), and clang::interp::VirtBaseHelper().

◆ atIndex()

Pointer clang::interp::Pointer::atIndex ( unsigned Idx ) const

inline

Offsets a pointer inside an array.

Definition at line 58 of file Pointer.h.

References elemSize(), getDeclDesc(), getFieldDesc(), getSize(), and Pointer().

Referenced by clang::interp::EvalEmitter::fallthrough().

◆ deactivate()

void Pointer::deactivate ( ) const

Deactivates an entire strurcutre.

Definition at line 183 of file Pointer.cpp.

Referenced by elem(), clang::interp::GetPtrActiveField(), and clang::interp::GetPtrActiveThisField().

◆ deref()

template<typename T >

T& clang::interp::Pointer::deref ( ) const

inline

Dereferences the pointer, if it's live.

Definition at line 280 of file Pointer.h.

References clang::interp::Block::data(), and isLive().

Referenced by clang::interp::EvalEmitter::fallthrough(), clang::interp::GetField(), clang::interp::GetFieldPop(), clang::interp::InterpFrame::getParam(), clang::interp::GetThisField(), clang::interp::InitThisBitField(), clang::interp::InitThisField(), clang::interp::InitThisFieldActive(), clang::interp::Load(), clang::interp::LoadPop(), clang::interp::SetField(), clang::interp::InterpFrame::setParam(), clang::interp::SetThisField(), clang::interp::Store(), clang::interp::StoreBitField(), clang::interp::StoreBitFieldPop(), and clang::interp::StorePop().

◆ elem()

template<typename T >

T& clang::interp::Pointer::elem ( unsigned I ) const

inline

Dereferences a primitive element.

Definition at line 286 of file Pointer.h.

References activate(), clang::interp::Block::data(), deactivate(), hasSameArray(), hasSameBase(), and initialize().

◆ elemSize()

size_t clang::interp::Pointer::elemSize ( ) const

inline

Returns the element size of the innermost field.

Definition at line 181 of file Pointer.h.

References getDeclDesc(), clang::interp::Descriptor::getElemSize(), getFieldDesc(), and clang::interp::Descriptor::getSize().

Referenced by atIndex(), getIndex(), and getNumElems().

◆ expand()

Pointer clang::interp::Pointer::expand ( ) const

inline

Expands a pointer to the containing array, undoing narrowing.

Definition at line 112 of file Pointer.h.

References clang::interp::InlineDescriptor::Desc, getDeclDesc(), getSize(), inPrimitiveArray(), clang::interp::Descriptor::IsArray, isElementPastEnd(), clang::interp::InlineDescriptor::Offset, and Pointer().

Referenced by clang::interp::ExpandPtr().

◆ getArray()

Pointer clang::interp::Pointer::getArray ( ) const

inline

Returns the parent array.

Definition at line 161 of file Pointer.h.

References Pointer().

Referenced by toAPValue().

◆ getBase()

Pointer clang::interp::Pointer::getBase ( ) const

inline

Returns a pointer to the object of which this pointer is a field.

Definition at line 151 of file Pointer.h.

References clang::interp::InlineDescriptor::Offset, and Pointer().

Referenced by toAPValue(), and clang::interp::VirtBaseHelper().

◆ getByteOffset()

unsigned clang::interp::Pointer::getByteOffset ( ) const

inline

Returns the byte offset from the start.

Definition at line 255 of file Pointer.h.

◆ getDeclDesc()

Descriptor* clang::interp::Pointer::getDeclDesc ( ) const

inline

Accessor for information about the declaration site.

Definition at line 147 of file Pointer.h.

References clang::interp::Block::Desc.

Referenced by atIndex(), elemSize(), expand(), getDeclLoc(), getFieldDesc(), isConst(), print(), and toAPValue().

◆ getDeclID()

llvm::Optional<unsigned> clang::interp::Pointer::getDeclID ( ) const

inline

Returns the declaration ID.

Definition at line 252 of file Pointer.h.

References clang::interp::Block::getDeclID().

◆ getDeclLoc()

SourceLocation clang::interp::Pointer::getDeclLoc ( ) const

inline

Definition at line 148 of file Pointer.h.

References getDeclDesc(), and clang::interp::Descriptor::getLocation().

◆ getField()

const FieldDecl* clang::interp::Pointer::getField ( ) const

inline

Returns the field information.

Definition at line 223 of file Pointer.h.

References clang::interp::Descriptor::asFieldDecl(), getFieldDesc(), and isUnion().

◆ getFieldDesc()

Descriptor* clang::interp::Pointer::getFieldDesc ( ) const

inline

Accessors for information about the innermost field.

Definition at line 171 of file Pointer.h.

References clang::interp::InlineDescriptor::Desc, and getDeclDesc().

Referenced by atIndex(), elemSize(), getField(), getOffset(), getRecord(), getSize(), getType(), hasSameArray(), inArray(), initialize(), inPrimitiveArray(), isInitialized(), isUnknownSizeArray(), narrow(), and toAPValue().

◆ getIndex()

int64_t clang::interp::Pointer::getIndex ( ) const

inline

Returns the index into an array.

Definition at line 263 of file Pointer.h.

References elemSize(), getOffset(), and isElementPastEnd().

Referenced by initialize(), isInitialized(), and toAPValue().

◆ getNumElems()

unsigned clang::interp::Pointer::getNumElems ( ) const

inline

Returns the number of elements.

Definition at line 260 of file Pointer.h.

References elemSize(), and getSize().

Referenced by clang::interp::EvalEmitter::fallthrough().

◆ getOffset()

unsigned clang::interp::Pointer::getOffset ( ) const

inline

Returns the offset into an array.

Definition at line 190 of file Pointer.h.

References getFieldDesc().

Referenced by getIndex(), and isOnePastEnd().

◆ getRecord()

Record* clang::interp::Pointer::getRecord ( ) const

inline

Returns the record descriptor of a class.

Definition at line 221 of file Pointer.h.

References clang::interp::Descriptor::ElemRecord, and getFieldDesc().

Referenced by clang::interp::VirtBaseHelper().

◆ getSize()

size_t clang::interp::Pointer::getSize ( ) const

inline

Returns the total size of the innermost field.

Definition at line 187 of file Pointer.h.

References getFieldDesc(), and clang::interp::Descriptor::getSize().

Referenced by atIndex(), expand(), getNumElems(), and isOnePastEnd().

◆ getType()

QualType clang::interp::Pointer::getType ( ) const

inline

Returns the type of the innermost field.

Definition at line 178 of file Pointer.h.

References getFieldDesc(), and clang::interp::Descriptor::getType().

◆ hasSameArray()

bool Pointer::hasSameArray	(	const Pointer &	A,
		const Pointer &	B
	)

static

Checks if two pointers can be subtracted.

Definition at line 191 of file Pointer.cpp.

References getFieldDesc(), and clang::interp::Descriptor::IsArray.

Referenced by elem().

◆ hasSameBase()

bool Pointer::hasSameBase	(	const Pointer &	A,
		const Pointer &	B
	)

static

Checks if two pointers are comparable.

Definition at line 187 of file Pointer.cpp.

Referenced by elem().

◆ inArray()

bool clang::interp::Pointer::inArray ( ) const

inline

Checks if the innermost field is an array.

Definition at line 206 of file Pointer.h.

References getFieldDesc(), and clang::interp::Descriptor::IsArray.

◆ initialize()

void Pointer::initialize ( ) const

Initializes a field.

Definition at line 154 of file Pointer.cpp.

References clang::interp::InitMap::allocate(), getFieldDesc(), getIndex(), clang::interp::Descriptor::getNumElems(), clang::interp::InitMap::initialize(), clang::interp::InlineDescriptor::IsInitialized, clang::interp::Descriptor::isPrimitiveArray(), and clang::interp::Block::IsStatic.

Referenced by elem(), clang::interp::InitPop(), clang::interp::InitThisBitField(), clang::interp::InitThisField(), clang::interp::InitThisFieldActive(), and clang::interp::InterpFrame::~InterpFrame().

◆ inPrimitiveArray()

bool clang::interp::Pointer::inPrimitiveArray ( ) const

inline

Checks if the structure is a primitive array.

Definition at line 208 of file Pointer.h.

References getFieldDesc(), and clang::interp::Descriptor::isPrimitiveArray().

Referenced by expand(), and narrow().

◆ isActive()

bool clang::interp::Pointer::isActive ( ) const

inline

Checks if the object is active.

Definition at line 242 of file Pointer.h.

References clang::interp::InlineDescriptor::IsActive.

Referenced by clang::interp::EvalEmitter::fallthrough().

◆ isArrayElement()

bool clang::interp::Pointer::isArrayElement ( ) const

inline

Checks if the pointer points to an array.

Definition at line 214 of file Pointer.h.

Referenced by toAPValue().

◆ isBaseClass()

bool clang::interp::Pointer::isBaseClass ( ) const

inline

Checks if a structure is a base class.

Definition at line 244 of file Pointer.h.

References clang::interp::InlineDescriptor::IsBase, and isField().

Referenced by clang::interp::VirtBaseHelper(), and clang::interp::InterpFrame::~InterpFrame().

◆ isConst()

bool clang::interp::Pointer::isConst ( ) const

inline

Checks if an object or a subfield is mutable.

Definition at line 247 of file Pointer.h.

References getDeclDesc(), clang::interp::Descriptor::IsConst, and clang::interp::InlineDescriptor::IsConst.

◆ isElementPastEnd()

bool clang::interp::Pointer::isElementPastEnd ( ) const

inline

Checks if the pointer is an out-of-bounds element pointer.

Definition at line 277 of file Pointer.h.

Referenced by expand(), getIndex(), and isOnePastEnd().

◆ isExtern()

bool clang::interp::Pointer::isExtern ( ) const

inline

Checks if the storage is extern.

Definition at line 229 of file Pointer.h.

References clang::interp::Block::isExtern().

◆ isField()

bool clang::interp::Pointer::isField ( ) const

inline

Checks if the item is a field in an object.

Definition at line 144 of file Pointer.h.

Referenced by isBaseClass(), and toAPValue().

◆ isInitialized()

bool Pointer::isInitialized ( ) const

Checks if an object was initialized.

Definition at line 135 of file Pointer.cpp.

References getFieldDesc(), getIndex(), clang::interp::InlineDescriptor::IsInitialized, clang::interp::InitMap::isInitialized(), clang::interp::Descriptor::isPrimitiveArray(), and clang::interp::Block::IsStatic.

Referenced by isMutable().

◆ isLive()

bool clang::interp::Pointer::isLive ( ) const

inline

Checks if the pointer is live.

Definition at line 142 of file Pointer.h.

References clang::interp::Block::IsDead.

Referenced by deref().

◆ isMutable()

bool clang::interp::Pointer::isMutable ( ) const

inline

Checks if the field is mutable.

Definition at line 238 of file Pointer.h.

References isInitialized(), and clang::interp::InlineDescriptor::IsMutable.

◆ isOnePastEnd()

bool clang::interp::Pointer::isOnePastEnd ( ) const

inline

Checks if the index is one past end.

Definition at line 272 of file Pointer.h.

References getOffset(), getSize(), and isElementPastEnd().

Referenced by narrow(), and toAPValue().

◆ isRoot()

bool clang::interp::Pointer::isRoot ( ) const

inline

Pointer points directly to a block.

Definition at line 216 of file Pointer.h.

Referenced by print().

◆ isStatic()

bool clang::interp::Pointer::isStatic ( ) const

inline

Checks if the storage is static.

Definition at line 231 of file Pointer.h.

References clang::interp::Block::isStatic().

Referenced by isStaticTemporary().

◆ isStaticTemporary()

bool clang::interp::Pointer::isStaticTemporary ( ) const

inline

Checks if the storage is a static temporary.

Definition at line 235 of file Pointer.h.

References isStatic(), and isTemporary().

◆ isTemporary()

bool clang::interp::Pointer::isTemporary ( ) const

inline

Checks if the storage is temporary.

Definition at line 233 of file Pointer.h.

References clang::interp::Block::isTemporary().

Referenced by isStaticTemporary().

◆ isUnion()

bool clang::interp::Pointer::isUnion ( ) const

Checks if the object is a union.

Referenced by getField().

◆ isUnknownSizeArray()

bool clang::interp::Pointer::isUnknownSizeArray ( ) const

inline

Checks if the structure is an array of unknown size.

Definition at line 210 of file Pointer.h.

References getFieldDesc(), and clang::interp::Descriptor::isUnknownSizeArray().

Referenced by narrow(), and toAPValue().

◆ isZero()

bool clang::interp::Pointer::isZero ( ) const

inline

Checks if the pointer is null.

Definition at line 140 of file Pointer.h.

Referenced by narrow(), print(), and toAPValue().

◆ narrow()

Pointer clang::interp::Pointer::narrow ( ) const

inline

Restricts the scope of an array element pointer.

Definition at line 76 of file Pointer.h.

References getFieldDesc(), inPrimitiveArray(), isOnePastEnd(), isUnknownSizeArray(), isZero(), and Pointer().

Referenced by clang::interp::EvalEmitter::fallthrough(), and clang::interp::NarrowPtr().

◆ operator=() [1/2]

void Pointer::operator= ( const Pointer & P )

Definition at line 41 of file Pointer.cpp.

References clang::interp::Block::addPointer(), clang::interp::Block::cleanup(), and clang::interp::Block::removePointer().

Referenced by Pointer().

◆ operator=() [2/2]

void Pointer::operator= ( Pointer && P )

Definition at line 58 of file Pointer.cpp.

References clang::interp::Block::cleanup(), clang::interp::Block::movePointer(), P, and clang::interp::Block::removePointer().

◆ print()

void clang::interp::Pointer::print ( llvm::raw_ostream & OS ) const

inline

Prints the pointer.

Definition at line 303 of file Pointer.h.

References clang::interp::Block::getSize().

Referenced by clang::interp::operator<<().

◆ toAPValue()

APValue Pointer::toAPValue ( ) const

Converts the pointer to an APValue.

Definition at line 75 of file Pointer.cpp.

References clang::APValue::LValuePathEntry::ArrayIndex(), clang::interp::Descriptor::asDecl(), clang::interp::Descriptor::asExpr(), clang::interp::Descriptor::asValueDecl(), getArray(), getBase(), getDeclDesc(), getFieldDesc(), getIndex(), isArrayElement(), isField(), isOnePastEnd(), isUnknownSizeArray(), isZero(), and clang::CharUnits::Zero().

Referenced by Pointer().

Friends And Related Function Documentation

◆ Block

friend class Block

friend

Definition at line 313 of file Pointer.h.

◆ DeadBlock

friend class DeadBlock

friend

Definition at line 314 of file Pointer.h.

The documentation for this class was generated from the following files:

lib/AST/Interp/Pointer.h
lib/AST/Interp/Pointer.cpp

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ Pointer() [1/4]

◆ Pointer() [2/4]

◆ Pointer() [3/4]

◆ Pointer() [4/4]

◆ ~Pointer()

Member Function Documentation

◆ activate()

◆ atField()

◆ atIndex()

◆ deactivate()

◆ deref()

◆ elem()

◆ elemSize()

◆ expand()

◆ getArray()

◆ getBase()

◆ getByteOffset()

◆ getDeclDesc()

◆ getDeclID()

◆ getDeclLoc()

◆ getField()

◆ getFieldDesc()

◆ getIndex()

◆ getNumElems()

◆ getOffset()

◆ getRecord()

◆ getSize()

◆ getType()

◆ hasSameArray()

◆ hasSameBase()

◆ inArray()

◆ initialize()

◆ inPrimitiveArray()

◆ isActive()

◆ isArrayElement()

◆ isBaseClass()

◆ isConst()

◆ isElementPastEnd()

◆ isExtern()

◆ isField()

◆ isInitialized()

◆ isLive()

◆ isMutable()

◆ isOnePastEnd()

◆ isRoot()

◆ isStatic()

◆ isStaticTemporary()

◆ isTemporary()

◆ isUnion()

◆ isUnknownSizeArray()

◆ isZero()

◆ narrow()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ print()

◆ toAPValue()

Friends And Related Function Documentation

◆ Block

◆ DeadBlock