CBMC
two_value_union_abstract_objectt Class Reference

#include <two_value_union_abstract_object.h>

+ Inheritance diagram for two_value_union_abstract_objectt:
+ Collaboration diagram for two_value_union_abstract_objectt:

Public Types

typedef abstract_aggregate_objectt< two_value_union_abstract_objectt, union_aggregate_typetabstract_aggregate_baset
 
- Public Types inherited from abstract_objectt
typedef goto_programt::const_targett locationt
 
typedef sharing_mapt< irep_idt, abstract_object_pointert, false, irep_id_hashshared_mapt
 

Public Member Functions

 two_value_union_abstract_objectt (const typet &type, bool top, bool bottom)
 Start the abstract object at either top or bottom or neither Asserts if both top and bottom are true. More...
 
 two_value_union_abstract_objectt (const exprt &expr, const abstract_environmentt &environment, const namespacet &ns)
 
- Public Member Functions inherited from abstract_aggregate_objectt< two_value_union_abstract_objectt, union_aggregate_typet >
 abstract_aggregate_objectt (const typet &type, bool tp, bool bttm)
 
 abstract_aggregate_objectt (const exprt &expr, const abstract_environmentt &environment, const namespacet &ns)
 
abstract_object_pointert expression_transform (const exprt &expr, const std::vector< abstract_object_pointert > &operands, const abstract_environmentt &environment, const namespacet &ns) const override
 Interface for transforms. More...
 
abstract_object_pointert write (abstract_environmentt &environment, const namespacet &ns, const std::stack< exprt > &stack, const exprt &specifier, const abstract_object_pointert &value, bool merging_write) const override
 A helper function to evaluate writing to a component of an abstract object. More...
 
void get_statistics (abstract_object_statisticst &statistics, abstract_object_visitedt &visited, const abstract_environmentt &env, const namespacet &ns) const override
 
- Public Member Functions inherited from abstract_objectt
 abstract_objectt (const typet &type, bool top, bool bottom)
 Start the abstract object at either top or bottom or neither Asserts if both top and bottom are true. More...
 
 abstract_objectt (const exprt &expr, const abstract_environmentt &environment, const namespacet &ns)
 Construct an abstract object from the expression. More...
 
virtual ~abstract_objectt ()
 
virtual const typettype () const
 Get the real type of the variable this abstract object is representing. More...
 
virtual bool is_top () const
 Find out if the abstract object is top. More...
 
virtual bool is_bottom () const
 Find out if the abstract object is bottom. More...
 
virtual bool verify () const
 Verify the internal structure of an abstract_object is correct. More...
 
virtual exprt to_constant () const
 Converts to a constant expression if possible. More...
 
exprt to_predicate (const exprt &name) const
 Converts to an invariant expression. More...
 
virtual void output (std::ostream &out, const class ai_baset &ai, const namespacet &ns) const
 Print the value of the abstract object. More...
 
virtual bool has_been_modified (const abstract_object_pointert &before) const
 Determine whether 'this' abstract_object has been modified in comparison to a previous 'before' state. More...
 
virtual abstract_object_pointert meet (const abstract_object_pointert &other) const
 Base implementation of the meet operation: only used if no more precise abstraction can be used, can only result in {TOP, BOTTOM, one of the original objects}. More...
 
virtual abstract_object_pointert write_location_context (const locationt &location) const
 Update the write location context for an abstract object. More...
 
virtual abstract_object_pointert merge_location_context (const locationt &location) const
 Update the merge location context for an abstract object. More...
 
abstract_object_pointert make_top () const
 
abstract_object_pointert clear_top () const
 
virtual abstract_object_pointert unwrap_context () const
 
virtual abstract_object_pointert visit_sub_elements (const abstract_object_visitort &visitor) const
 Apply a visitor operation to all sub elements of this abstract_object. More...
 
virtual size_t internal_hash () const
 
virtual bool internal_equality (const abstract_object_pointert &other) const
 
virtual exprt to_predicate_internal (const exprt &name) const
 to_predicate implementation - derived classes will override More...
 

Protected Member Functions

void statistics (abstract_object_statisticst &statistics, abstract_object_visitedt &visited, const abstract_environmentt &env, const namespacet &ns) const override
 
- Protected Member Functions inherited from abstract_aggregate_objectt< two_value_union_abstract_objectt, union_aggregate_typet >
virtual abstract_object_pointert read_component (const abstract_environmentt &environment, const exprt &expr, const namespacet &ns) const
 
virtual abstract_object_pointert write_component (abstract_environmentt &environment, const namespacet &ns, const std::stack< exprt > &stack, const exprt &expr, const abstract_object_pointert &value, bool merging_write) const
 
- Protected Member Functions inherited from abstract_objectt
virtual internal_abstract_object_pointert mutable_clone () const
 
abstract_object_pointert abstract_object_merge (const abstract_object_pointert &other) const
 Create a new abstract object that is the result of the merge, unless the object would be unchanged, then would return itself. More...
 
bool should_use_base_merge (const abstract_object_pointert &other) const
 To detect the cases where the base merge is sufficient to do a merge We can't do if this->is_bottom() since we want the specific. More...
 
virtual abstract_object_pointert merge (const abstract_object_pointert &other, const widen_modet &widen_mode) const
 Create a new abstract object that is the result of the merge, unless the object would be unchanged, then would return itself. More...
 
abstract_object_pointert abstract_object_meet (const abstract_object_pointert &other) const
 Helper function for base meet. More...
 
bool should_use_base_meet (const abstract_object_pointert &other) const
 Helper function to decide if base meet implementation should be used. More...
 
void set_top ()
 
void set_not_top ()
 
void set_not_bottom ()
 

Additional Inherited Members

- Static Public Member Functions inherited from abstract_objectt
static void dump_map (std::ostream out, const shared_mapt &m)
 
static void dump_map_diff (std::ostream out, const shared_mapt &m1, const shared_mapt &m2)
 Dump all elements in m1 that are different or missing in m2. More...
 
static combine_result merge (const abstract_object_pointert &op1, const abstract_object_pointert &op2, const locationt &merge_location, const widen_modet &widen_mode)
 
static combine_result merge (const abstract_object_pointert &op1, const abstract_object_pointert &op2, const widen_modet &widen_mode)
 
static combine_result meet (const abstract_object_pointert &op1, const abstract_object_pointert &op2)
 Interface method for the meet operation. More...
 
- Protected Types inherited from abstract_objectt
template<class T >
using internal_sharing_ptrt = std::shared_ptr< T >
 
typedef internal_sharing_ptrt< class abstract_objecttinternal_abstract_object_pointert
 
- Static Protected Member Functions inherited from abstract_aggregate_objectt< two_value_union_abstract_objectt, union_aggregate_typet >
static bool merge_shared_maps (const sharing_mapt< keyt, abstract_object_pointert, false, hash > &map1, const sharing_mapt< keyt, abstract_object_pointert, false, hash > &map2, sharing_mapt< keyt, abstract_object_pointert, false, hash > &out_map, const widen_modet &widen_mode)
 

Detailed Description

Definition at line 17 of file two_value_union_abstract_object.h.

Member Typedef Documentation

◆ abstract_aggregate_baset

Constructor & Destructor Documentation

◆ two_value_union_abstract_objectt() [1/2]

two_value_union_abstract_objectt::two_value_union_abstract_objectt ( const typet type,
bool  top,
bool  bottom 
)
inline

Start the abstract object at either top or bottom or neither Asserts if both top and bottom are true.

Parameters
typethe type the abstract_object is representing
topis the abstract_object starting as top
bottomis the abstract_object starting as bottom

Definition at line 33 of file two_value_union_abstract_object.h.

◆ two_value_union_abstract_objectt() [2/2]

two_value_union_abstract_objectt::two_value_union_abstract_objectt ( const exprt expr,
const abstract_environmentt environment,
const namespacet ns 
)
inlineexplicit
Parameters
exprthe expression to use as the starting pointer for an abstract object
environmentthe environment the abstract object is going to be evaluated in.
nsthe current namespace

Definition at line 43 of file two_value_union_abstract_object.h.

Member Function Documentation

◆ statistics()

void two_value_union_abstract_objectt::statistics ( abstract_object_statisticst statistics,
abstract_object_visitedt visited,
const abstract_environmentt env,
const namespacet ns 
) const
inlineoverrideprotectedvirtual

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