full_struct_abstract_object.h

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/*******************************************************************\
 
Module: Struct abstract object
 
Author: Thomas Kiley, thomas.kiley@diffblue.com
 
\*******************************************************************/
 
#ifndef CPROVER_ANALYSES_VARIABLE_SENSITIVITY_FULL_STRUCT_ABSTRACT_OBJECT_H
#define CPROVER_ANALYSES_VARIABLE_SENSITIVITY_FULL_STRUCT_ABSTRACT_OBJECT_H
 
#include <analyses/variable-sensitivity/abstract_aggregate_object.h>
#include <iosfwd>
#include <util/sharing_map.h>
 
class full_struct_abstract_objectt : public abstract_aggregate_objectt<
                                       full_struct_abstract_objectt,
                                       struct_aggregate_typet>
{
public:
  typedef sharing_ptrt<full_struct_abstract_objectt> constant_struct_pointert;
  typedef abstract_aggregate_objectt<
    full_struct_abstract_objectt,
    struct_aggregate_typet>
    abstract_aggregate_baset;
 
  full_struct_abstract_objectt(const full_struct_abstract_objectt &ao);
 
  full_struct_abstract_objectt(const typet &type, bool top, bool bottom);
 
  full_struct_abstract_objectt(
    const exprt &expr,
    const abstract_environmentt &environment,
    const namespacet &ns);
 
  void output(
    std::ostream &out,
    const class ai_baset &ai,
    const class namespacet &ns) const override;
 
  abstract_object_pointert
  write_location_context(const locationt &location) const override;
  abstract_object_pointert
  merge_location_context(const locationt &location) const override;
 
  abstract_object_pointert
  visit_sub_elements(const abstract_object_visitort &visitor) const override;
 
  void statistics(
    abstract_object_statisticst &statistics,
    abstract_object_visitedt &visited,
    const abstract_environmentt &env,
    const namespacet &ns) const override;
 
private:
  // no entry means component is top
  typedef sharing_mapt<irep_idt, abstract_object_pointert, false, irep_id_hash>
    shared_struct_mapt;
  shared_struct_mapt map;
 
  abstract_object_pointert merge_constant_structs(
    constant_struct_pointert other,
    const widen_modet &widen_mode) const;
 
protected:
  CLONE
 
  abstract_object_pointert read_component(
    const abstract_environmentt &environment,
    const exprt &expr,
    const namespacet &ns) const override;
 
  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 override;
 
  bool verify() const override;
 
  abstract_object_pointert merge(
    const abstract_object_pointert &other,
    const widen_modet &widen_mode) const override;
 
  exprt to_predicate_internal(const exprt &name) const override;
};
 
#endif // CPROVER_ANALYSES_VARIABLE_SENSITIVITY_FULL_STRUCT_ABSTRACT_OBJECT_H