#include <Expr.h>

Inheritance diagram for klee::ExtractExpr:

Collaboration diagram for klee::ExtractExpr:

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Public Member Functions
Width	getWidth () const

Kind	getKind () const

unsigned	getNumKids () const

ref< Expr >	getKid (unsigned i) const

int	compareContents (const Expr &b) const

virtual ref< Expr >	rebuild (ref< Expr > kids[]) const

virtual unsigned	computeHash ()

Public Member Functions inherited from klee::Expr
	Expr ()

virtual	~Expr ()

virtual Kind	getKind () const =0

virtual Width	getWidth () const =0

virtual unsigned	getNumKids () const =0

virtual ref< Expr >	getKid (unsigned i) const =0

virtual void	print (llvm::raw_ostream &os) const

void	dump () const
	dump - Print the expression to stderr. More...

virtual unsigned	hash () const
	Returns the pre-computed hash of the current expression. More...

virtual unsigned	computeHash ()

int	compare (const Expr &b) const

virtual ref< Expr >	rebuild (ref< Expr > kids[]) const =0

bool	isZero () const
	isZero - Is this a constant zero. More...

bool	isTrue () const
	isTrue - Is this the true expression. More...

bool	isFalse () const
	isFalse - Is this the false expression. More...

Static Public Member Functions
static ref< Expr >	alloc (const ref< Expr > &e, unsigned o, Width w)

static ref< Expr >	create (ref< Expr > e, unsigned bitOff, Width w)
	Creates an ExtractExpr with the given bit offset and width. More...

static bool	classof (const Expr *E)

static bool	classof (const ExtractExpr *)

Static Public Member Functions inherited from klee::NonConstantExpr
static bool	classof (const Expr *E)

static bool	classof (const NonConstantExpr *)

Static Public Member Functions inherited from klee::Expr
static void	printKind (llvm::raw_ostream &os, Kind k)

static void	printWidth (llvm::raw_ostream &os, Expr::Width w)

static unsigned	getMinBytesForWidth (Width w)
	returns the smallest number of bytes in which the given width fits More...

static ref< Expr >	createSExtToPointerWidth (ref< Expr > e)

static ref< Expr >	createZExtToPointerWidth (ref< Expr > e)

static ref< Expr >	createImplies (ref< Expr > hyp, ref< Expr > conc)

static ref< Expr >	createIsZero (ref< Expr > e)

static ref< Expr >	createTempRead (const Array *array, Expr::Width w)

static ref< ConstantExpr >	createPointer (uint64_t v)

static ref< Expr >	createFromKind (Kind k, std::vector< CreateArg > args)

static bool	isValidKidWidth (unsigned kid, Width w)

static bool	needsResultType ()

static bool	classof (const Expr *)

Public Attributes
ref< Expr >	expr

unsigned	offset

Width	width

Public Attributes inherited from klee::Expr
class ReferenceCounter	_refCount
	Required by klee::ref-managed objects. More...

Static Public Attributes
static const Kind	kind = Extract

static const unsigned	numKids = 1

Static Public Attributes inherited from klee::Expr
static unsigned	count = 0

static const unsigned	MAGIC_HASH_CONSTANT = 39

static const Width	InvalidWidth = 0

static const Width	Bool = 1

static const Width	Int8 = 8

static const Width	Int16 = 16

static const Width	Int32 = 32

static const Width	Int64 = 64

static const Width	Fl80 = 80

Private Member Functions
	ExtractExpr (const ref< Expr > &e, unsigned b, Width w)

Additional Inherited Members
Public Types inherited from klee::Expr
enum	Kind { InvalidKind = -1 , Constant = 0 , NotOptimized , Read =NotOptimized+2 , Select , Concat , Extract , ZExt , SExt , Not , Add , Sub , Mul , UDiv , SDiv , URem , SRem , And , Or , Xor , Shl , LShr , AShr , Eq , Ne , Ult , Ule , Ugt , Uge , Slt , Sle , Sgt , Sge , LastKind =Sge , CastKindFirst =ZExt , CastKindLast =SExt , BinaryKindFirst =Add , BinaryKindLast =Sge , CmpKindFirst =Eq , CmpKindLast =Sge }

typedef unsigned	Width
	The type of an expression is simply its width, in bits. More...

virtual int	compareContents (const Expr &b) const =0

Protected Attributes inherited from klee::Expr
unsigned	hashValue

Detailed Description

This class represents an extract from expression {\tt expr}, at bit offset {\tt offset} of width {\tt width}. Bit 0 is the right most bit of the expression.

Definition at line 739 of file Expr.h.

Constructor & Destructor Documentation

◆ ExtractExpr()

klee::ExtractExpr::ExtractExpr	(	const ref< Expr > &	e,
		unsigned	b,
		Width	w
	)

inlineprivate

Definition at line 779 of file Expr.h.

Referenced by alloc().

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Member Function Documentation

◆ alloc()

static ref< Expr > klee::ExtractExpr::alloc	(	const ref< Expr > &	e,
		unsigned	o,
		Width	w
	)

inlinestatic

Definition at line 750 of file Expr.h.

References klee::Expr::computeHash(), and ExtractExpr().

Referenced by klee::ExprOptimizer::buildConstantSelectExpr(), and create().

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◆ classof() [1/2]

static bool klee::ExtractExpr::classof ( const Expr * E )

inlinestatic

Definition at line 783 of file Expr.h.

References klee::Expr::Extract, and klee::Expr::getKind().

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◆ classof() [2/2]

static bool klee::ExtractExpr::classof ( const ExtractExpr * )

inlinestatic

Definition at line 786 of file Expr.h.

◆ compareContents()

int klee::ExtractExpr::compareContents ( const Expr & b ) const

inlinevirtual

Compares b to this Expr and determines how they are ordered (ignoring their kid expressions - i.e. those returned by getKid()).

Typically this requires comparing internal attributes of the Expr.

Implementations can assume that b and this are of the same kind.

This method effectively defines a partial order over Expr of the same kind (partial because kid Expr are not compared).

This method should not be called directly. Instead compare() should be used.

Parameters

[in] b Expr to compare this to.

Returns: One of the following values:

-1 if this is < b ignoring kid expressions.
1 if this is > b ignoring kid expressions.
0 if this and b are not ordered.

< and > are binary relations that express the partial order.

Implements klee::Expr.

Definition at line 765 of file Expr.h.

References offset, and width.

◆ computeHash()

unsigned ExtractExpr::computeHash ( )

virtual

(Re)computes the hash of the current expression. Returns the hash value.

Reimplemented from klee::Expr.

Definition at line 211 of file Expr.cpp.

References expr, getWidth(), klee::Expr::hash(), klee::Expr::hashValue, klee::Expr::MAGIC_HASH_CONSTANT, and offset.

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◆ create()

ref< Expr > ExtractExpr::create	(	ref< Expr >	e,
		unsigned	bitOff,
		Width	w
	)

static

Creates an ExtractExpr with the given bit offset and width.

Definition at line 675 of file Expr.cpp.

References alloc(), klee::ConcatExpr::create(), create(), expr, klee::Expr::Extract, getWidth(), and klee::Expr::getWidth().

Referenced by klee::ConcatExpr::create(), create(), klee::AssignmentGenerator::createExtractExpr(), klee::Executor::executeCall(), klee::Executor::executeInstruction(), klee::AssignmentGenerator::helperGenerateAssignment(), klee::ObjectState::read(), rebuild(), and klee::ObjectState::write().

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◆ getKid()

ref< Expr > klee::ExtractExpr::getKid ( unsigned i ) const

inlinevirtual

Implements klee::Expr.

Definition at line 763 of file Expr.h.

References expr.

◆ getKind()

Kind klee::ExtractExpr::getKind ( ) const

inlinevirtual

Implements klee::Expr.

Definition at line 760 of file Expr.h.

References klee::Expr::Extract.

◆ getNumKids()

unsigned klee::ExtractExpr::getNumKids ( ) const

inlinevirtual

Implements klee::Expr.

Definition at line 762 of file Expr.h.

References numKids.

◆ getWidth()

Width klee::ExtractExpr::getWidth ( ) const

inlinevirtual

Implements klee::Expr.

Definition at line 759 of file Expr.h.

References width.

Referenced by computeHash(), and create().

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◆ rebuild()

virtual ref< Expr > klee::ExtractExpr::rebuild ( ref< Expr > kids[] ) const

inlinevirtual

Implements klee::Expr.

Definition at line 772 of file Expr.h.

References create(), offset, and width.

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Member Data Documentation

◆ expr

ref<Expr> klee::ExtractExpr::expr

Definition at line 745 of file Expr.h.

Referenced by computeHash(), create(), getKid(), and PPrinter::printExtract().

◆ kind

const Kind klee::ExtractExpr::kind = Extract

static

Definition at line 741 of file Expr.h.

◆ numKids

const unsigned klee::ExtractExpr::numKids = 1

static

Definition at line 742 of file Expr.h.

Referenced by getNumKids().

◆ offset

unsigned klee::ExtractExpr::offset

Definition at line 746 of file Expr.h.

Referenced by compareContents(), computeHash(), PPrinter::printExtract(), and rebuild().

◆ width

Width klee::ExtractExpr::width

Definition at line 747 of file Expr.h.

Referenced by compareContents(), getWidth(), and rebuild().

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

/Users/cristic/klee/include/klee/Expr/Expr.h
/Users/cristic/klee/lib/Expr/Expr.cpp

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ExtractExpr()

Member Function Documentation

◆ alloc()

◆ classof() [1/2]

◆ classof() [2/2]

◆ compareContents()

◆ computeHash()

◆ create()

◆ getKid()

◆ getKind()

◆ getNumKids()

◆ getWidth()

◆ rebuild()

Member Data Documentation

◆ expr

◆ kind

◆ numKids

◆ offset

◆ width