interval_abstract_value.h

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/*******************************************************************\
 
 Module: analyses variable-sensitivity intervals
 
 Author: Diffblue Ltd.
 
\*******************************************************************/
 
 
#ifndef CPROVER_ANALYSES_VARIABLE_SENSITIVITY_INTERVAL_ABSTRACT_VALUE_H
#define CPROVER_ANALYSES_VARIABLE_SENSITIVITY_INTERVAL_ABSTRACT_VALUE_H
 
#include <iosfwd>
 
#include <util/interval.h>
 
#include <analyses/variable-sensitivity/abstract_value_object.h>
 
class interval_abstract_valuet : public abstract_value_objectt
{
public:
  explicit interval_abstract_valuet(const typet &t);
  interval_abstract_valuet(const typet &t, bool tp, bool bttm);
 
  explicit interval_abstract_valuet(const constant_interval_exprt &e);
  interval_abstract_valuet(const exprt &lower, const exprt &upper);
 
  interval_abstract_valuet(
    const exprt &e,
    const abstract_environmentt &environment,
    const namespacet &ns);
 
  template <typename... Args>
  static std::shared_ptr<interval_abstract_valuet>
  make_interval(Args &&... args)
  {
    return std::make_shared<interval_abstract_valuet>(
      std::forward<Args>(args)...);
  }
 
  ~interval_abstract_valuet() override = default;
 
  index_range_implementation_ptrt
  index_range_implementation(const namespacet &ns) const override;
 
  value_range_implementation_ptrt value_range_implementation() const override;
 
  exprt to_constant() const override;
  constant_interval_exprt to_interval() const override
  {
    return interval;
  }
 
  abstract_value_pointert
  constrain(const exprt &lower, const exprt &upper) const override;
 
  size_t internal_hash() const override;
  bool internal_equality(const abstract_object_pointert &other) const override;
 
  void output(
    std::ostream &out,
    const class ai_baset &ai,
    const class namespacet &ns) const override;
 
  void get_statistics(
    abstract_object_statisticst &statistics,
    abstract_object_visitedt &visited,
    const abstract_environmentt &env,
    const namespacet &ns) const override;
 
protected:
  CLONE
 
  abstract_object_pointert merge_with_value(
    const abstract_value_pointert &other,
    const widen_modet &widen_mode) const override;
 
  abstract_object_pointert
  meet_with_value(const abstract_value_pointert &other) const override;
 
  exprt to_predicate_internal(const exprt &name) const override;
 
private:
  constant_interval_exprt interval;
 
  void set_top_internal() override;
};
 
#endif // CPROVER_ANALYSES_VARIABLE_SENSITIVITY_INTERVAL_ABSTRACT_VALUE_H