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/******************************************************************************
* Top contributors (to current version):
* Tim King, Andres Noetzli, Kshitij Bansal
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* [[ Add one-line brief description here ]]
*
* [[ Add lengthier description here ]]
* \todo document this file
*/
#include "cvc5_public.h"
#ifndef CVC5__EMPTY_SET_H
#define CVC5__EMPTY_SET_H
#include <iosfwd>
#include <memory>
namespace cvc5 {
class TypeNode;
class EmptySet
{
public:
/**
* Constructs an emptyset of the specified type. Note that the argument
* is the type of the set itself, NOT the type of the elements.
*/
EmptySet(const TypeNode& setType);
~EmptySet();
EmptySet(const EmptySet& other);
EmptySet& operator=(const EmptySet& other);
const TypeNode& getType() const;
bool operator==(const EmptySet& es) const;
bool operator!=(const EmptySet& es) const;
bool operator<(const EmptySet& es) const;
bool operator<=(const EmptySet& es) const;
bool operator>(const EmptySet& es) const;
bool operator>=(const EmptySet& es) const;
private:
EmptySet();
std::unique_ptr<TypeNode> d_type;
}; /* class EmptySet */
std::ostream& operator<<(std::ostream& out, const EmptySet& es);
struct EmptySetHashFunction
{
size_t operator()(const EmptySet& es) const;
}; /* struct EmptySetHashFunction */
} // namespace cvc5
#endif /* CVC5__EMPTY_SET_H */
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