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Public Member Functions | Static Public Member Functions | List of all members
dereference_exprt Class Reference

Operator to dereference a pointer. More...

#include <pointer_expr.h>

+ Inheritance diagram for dereference_exprt:
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+ Collaboration diagram for dereference_exprt:
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Public Member Functions

  dereference_exprt (const exprt &op)
 
  dereference_exprt (exprt op, typet type)
 
exprt &  pointer ()
 
const exprt &  pointer () const
 
- Public Member Functions inherited from unary_exprt
  unary_exprt (const irep_idt &_id, const exprt &_op)
 
  unary_exprt (const irep_idt &_id, exprt _op, typet _type)
 
const exprt &  op () const
 
exprt &  op ()
 
const exprt &  op1 () const =delete
 
exprt &  op1 ()=delete
 
const exprt &  op2 () const =delete
 
exprt &  op2 ()=delete
 
const exprt &  op3 () const =delete
 
exprt &  op3 ()=delete
 
- 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 ()
 

Static Public Member Functions

static void  check (const exprt &expr, const validation_modet vm=validation_modet::INVARIANT)
 
static void  validate (const exprt &expr, const namespacet &ns, const validation_modet vm=validation_modet::INVARIANT)
  Check that the dereference expression has the right number of operands, refers to something with a pointer type, and that its type is the base type of that pointer type.
 
- Static Public Member Functions inherited from unary_exprt
static void  check (const exprt &expr, const validation_modet vm=validation_modet::INVARIANT)
 
static void  validate (const exprt &expr, const namespacet &, const validation_modet vm=validation_modet::INVARIANT)
 
- Static Public Member Functions inherited from exprt
static void  check (const exprt &, const validation_modet=validation_modet::INVARIANT)
  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
 

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.
 
- 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

Operator to dereference a pointer.

Definition at line 833 of file pointer_expr.h.

Constructor & Destructor Documentation

◆  dereference_exprt() [1/2]

dereference_exprt::dereference_exprt ( const exprt &  op )
inlineexplicit

Definition at line 837 of file pointer_expr.h.

◆  dereference_exprt() [2/2]

dereference_exprt::dereference_exprt ( exprt  op,
typet  type 
)
inline

Definition at line 842 of file pointer_expr.h.

Member Function Documentation

◆  check()

static void dereference_exprt::check ( const exprt &  expr,
const validation_modet  vm = validation_modet::INVARIANT  
)
inlinestatic

Definition at line 857 of file pointer_expr.h.

◆  pointer() [1/2]

exprt & dereference_exprt::pointer ( )
inline

Definition at line 847 of file pointer_expr.h.

◆  pointer() [2/2]

const exprt & dereference_exprt::pointer ( ) const
inline

Definition at line 852 of file pointer_expr.h.

◆  validate()

void dereference_exprt::validate ( const exprt &  expr,
const namespacet &  ns,
const validation_modet  vm = validation_modet::INVARIANT  
)
static

Check that the dereference expression has the right number of operands, refers to something with a pointer type, and that its type is the base type of that pointer type.

Throws or raises an invariant if not, according to validation mode.

Parameters
expr expression to validate
ns global namespace
vm validation mode (see exprt::validate)

Definition at line 210 of file pointer_expr.cpp.

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

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