Extracts a sub-range of a bit-vector operand. More...

#include <bitvector_expr.h>

Inheritance diagram for extractbits_exprt:

Collaboration diagram for extractbits_exprt:

Public Member Functions
	extractbits_exprt (exprt _src, exprt _index, typet _type)
	Extract the bits [`_index` .

	extractbits_exprt (exprt _src, const std::size_t _index, typet _type)

exprt &	src ()

exprt &	index ()

const exprt &	src () const

const exprt &	index () const

Public Member Functions inherited from exprt
	exprt ()

	exprt (const irep_idt &_id)

	exprt (irep_idt _id, typet _type)

	exprt (irep_idt _id, typet _type, operandst &&_operands)

	exprt (const irep_idt &id, typet type, source_locationt loc)

typet &	type ()
	Return the type of the expression.

const typet &	type () const

bool	has_operands () const
	Return true if there is at least one operand.

operandst &	operands ()

const operandst &	operands () const

exprt &	with_source_location (source_locationt location) &
	Add the source location from `location`, if it is non-nil.

exprt &&	with_source_location (source_locationt location) &&
	Add the source location from `location`, if it is non-nil.

exprt &	with_source_location (const exprt &other) &
	Add the source location from `other`, if it has any.

exprt &&	with_source_location (const exprt &other) &&
	Add the source location from `other`, if it has any.

void	reserve_operands (operandst::size_type n)

void	copy_to_operands (const exprt &expr)
	Copy the given argument to the end of `exprt`'s operands.

void	add_to_operands (const exprt &expr)
	Add the given argument to the end of `exprt`'s operands.

void	add_to_operands (exprt &&expr)
	Add the given argument to the end of `exprt`'s operands.

void	add_to_operands (exprt &&e1, exprt &&e2)
	Add the given arguments to the end of `exprt`'s operands.

void	add_to_operands (exprt &&e1, exprt &&e2, exprt &&e3)
	Add the given arguments to the end of `exprt`'s operands.

bool	is_constant () const
	Return whether the expression is a constant.

bool	is_true () const
	Return whether the expression is a constant representing `true`.

bool	is_false () const
	Return whether the expression is a constant representing `false`.

bool	is_zero () const
	Return whether the expression is a constant representing 0.

bool	is_one () const
	Return whether the expression is a constant representing 1.

bool	is_boolean () const
	Return whether the expression represents a Boolean.

const source_locationt &	find_source_location () const
	Get a source_locationt from the expression or from its operands (non-recursively).

const source_locationt &	source_location () const

source_locationt &	add_source_location ()

void	drop_source_location ()

void	visit (class expr_visitort &visitor)
	These are pre-order traversal visitors, i.e., the visitor is executed on a node before its children have been visited.

void	visit (class const_expr_visitort &visitor) const

void	visit_pre (std::function< void(exprt &)>)

void	visit_pre (std::function< void(const exprt &)>) const

void	visit_post (std::function< void(exprt &)>)
	These are post-order traversal visitors, i.e., the visitor is executed on a node after its children have been visited.

void	visit_post (std::function< void(const exprt &)>) const

depth_iteratort	depth_begin ()

depth_iteratort	depth_end ()

const_depth_iteratort	depth_begin () const

const_depth_iteratort	depth_end () const

const_depth_iteratort	depth_cbegin () const

const_depth_iteratort	depth_cend () const

depth_iteratort	depth_begin (std::function< exprt &()> mutate_root) const

const_unique_depth_iteratort	unique_depth_begin () const

const_unique_depth_iteratort	unique_depth_end () const

const_unique_depth_iteratort	unique_depth_cbegin () const

const_unique_depth_iteratort	unique_depth_cend () const

Public Member Functions inherited from irept
bool	is_nil () const

bool	is_not_nil () const

	irept (const irep_idt &_id)

	irept (const irep_idt &_id, const named_subt &_named_sub, const subt &_sub)

	irept ()=default

const irep_idt &	id () const

const std::string &	id_string () const

void	id (const irep_idt &_data)

const irept &	find (const irep_idt &name) const

irept &	add (const irep_idt &name)

irept &	add (const irep_idt &name, irept irep)

const std::string &	get_string (const irep_idt &name) const

const irep_idt &	get (const irep_idt &name) const

bool	get_bool (const irep_idt &name) const

signed int	get_int (const irep_idt &name) const

std::size_t	get_size_t (const irep_idt &name) const

long long	get_long_long (const irep_idt &name) const

void	set (const irep_idt &name, const irep_idt &value)

void	set (const irep_idt &name, irept irep)

void	set (const irep_idt &name, const long long value)

void	set_size_t (const irep_idt &name, const std::size_t value)

void	remove (const irep_idt &name)

void	move_to_sub (irept &irep)

void	move_to_named_sub (const irep_idt &name, irept &irep)

bool	operator== (const irept &other) const

bool	operator!= (const irept &other) const

void	swap (irept &irep)

bool	operator< (const irept &other) const
	defines ordering on the internal representation

bool	ordering (const irept &other) const
	defines ordering on the internal representation

int	compare (const irept &i) const
	defines ordering on the internal representation comments are ignored

void	clear ()

void	make_nil ()

subt &	get_sub ()

const subt &	get_sub () const

named_subt &	get_named_sub ()

const named_subt &	get_named_sub () const

std::size_t	hash () const

std::size_t	full_hash () const

bool	full_eq (const irept &other) const

std::string	pretty (unsigned indent=0, unsigned max_indent=0) const

Public Member Functions inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
	sharing_treet (irep_idt _id)

	sharing_treet (irep_idt _id, named_subt _named_sub, subt _sub)

	sharing_treet ()

	sharing_treet (const sharing_treet &irep)

	sharing_treet (sharing_treet &&irep)

sharing_treet &	operator= (const sharing_treet &irep)

sharing_treet &	operator= (sharing_treet &&irep)

	~sharing_treet ()

const dt &	read () const

dt &	write ()

Additional Inherited Members
Public Types inherited from exprt
typedef std::vector< exprt >	operandst

Public Types inherited from irept
using	baset = tree_implementationt

Public Types inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
using	dt = tree_nodet< irept, forward_list_as_mapt< irep_idt, irept >, true >

using	subt = typename dt::subt

using	named_subt = typename dt::named_subt

using	tree_implementationt = sharing_treet
	Used to refer to this class from derived classes.

Static Public Member Functions inherited from exprt
static void	check (const exprt &, const validation_modet)
	Check that the expression is well-formed (shallow checks only, i.e., subexpressions and its type are not checked).

static void	validate (const exprt &expr, const namespacet &, const validation_modet vm=validation_modet::INVARIANT)
	Check that the expression is well-formed, assuming that its subexpressions and type have all ready been checked for well-formedness.

static void	validate_full (const exprt &expr, const namespacet &ns, const validation_modet vm=validation_modet::INVARIANT)
	Check that the expression is well-formed (full check, including checks of all subexpressions and the type)

Static Public Member Functions inherited from irept
static bool	is_comment (const irep_idt &name)

static std::size_t	number_of_non_comments (const named_subt &)
	count the number of named_sub elements that are not comments

Protected Member Functions inherited from expr_protectedt
	expr_protectedt (irep_idt _id, typet _type)

	expr_protectedt (irep_idt _id, typet _type, operandst _operands)

exprt &	op0 ()

const exprt &	op0 () const

exprt &	op1 ()

const exprt &	op1 () const

exprt &	op2 ()

const exprt &	op2 () const

exprt &	op3 ()

const exprt &	op3 () const

Protected Member Functions inherited from exprt
exprt &	op0 ()

exprt &	op1 ()

exprt &	op2 ()

exprt &	op3 ()

const exprt &	op0 () const

const exprt &	op1 () const

const exprt &	op2 () const

const exprt &	op3 () const

exprt &	add_expr (const irep_idt &name)

const exprt &	find_expr (const irep_idt &name) const

Protected Member Functions inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
void	detach ()

Static Protected Member Functions inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
static void	remove_ref (dt *old_data)

static void	nonrecursive_destructor (dt *old_data)
	Does the same as remove_ref, but using an explicit stack instead of recursion.

Protected Attributes inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
dt *	data

Static Protected Attributes inherited from sharing_treet< irept, forward_list_as_mapt< irep_idt, irept > >
static dt	empty_d

Detailed Description

Extracts a sub-range of a bit-vector operand.

Definition at line 596 of file bitvector_expr.h.

Constructor & Destructor Documentation

◆ extractbits_exprt() [1/2]

extractbits_exprt::extractbits_exprt	(	exprt	_src,
		exprt	_index,
		typet	_type
	)

inline

Extract the bits [_index .

. _index + width - 1] from _src to produce a result of type _type where width is the number of bits of _type. Note that this specifies a closed interval, i.e., both bits _lower and _index + width - 1 are included. Indices count from the least-significant bit, and are not affected by endianness.

Definition at line 604 of file bitvector_expr.h.

◆ extractbits_exprt() [2/2]

extractbits_exprt::extractbits_exprt	(	exprt	_src,
		const std::size_t	_index,
		typet	_type
	)

Definition at line 31 of file bitvector_expr.cpp.

Member Function Documentation

◆ index() [1/2]

exprt & extractbits_exprt::index ( )

inline

Definition at line 619 of file bitvector_expr.h.

◆ index() [2/2]

const exprt & extractbits_exprt::index ( ) const

inline

Definition at line 629 of file bitvector_expr.h.

◆ src() [1/2]

exprt & extractbits_exprt::src ( )

inline

Definition at line 614 of file bitvector_expr.h.

◆ src() [2/2]

const exprt & extractbits_exprt::src ( ) const

inline

Definition at line 624 of file bitvector_expr.h.

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

/home/runner/work/cbmc/cbmc/src/util/bitvector_expr.h
/home/runner/work/cbmc/cbmc/src/util/bitvector_expr.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ extractbits_exprt() [1/2]

◆ extractbits_exprt() [2/2]

Member Function Documentation

◆ index() [1/2]

◆ index() [2/2]

◆ src() [1/2]

◆ src() [2/2]