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/********************* */
/*! \file rewrites.h
** \verbatim
** Top contributors (to current version):
** Mudathir Mohamed
** This file is part of the CVC4 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.\endverbatim
**
** \brief Type for rewrites for bags.
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__BAGS__REWRITES_H
#define CVC4__THEORY__BAGS__REWRITES_H
#include <iosfwd>
namespace cvc5 {
namespace theory {
namespace bags {
/** Types of rewrites used by bags
*
* This rewrites are documented where they are used in the rewriter.
*/
enum class Rewrite : uint32_t
{
NONE, // no rewrite happened
CARD_DISJOINT,
CARD_MK_BAG,
CHOOSE_MK_BAG,
CONSTANT_EVALUATION,
COUNT_EMPTY,
COUNT_MK_BAG,
DUPLICATE_REMOVAL_MK_BAG,
EQ_CONST_FALSE,
EQ_REFL,
EQ_SYM,
FROM_SINGLETON,
IDENTICAL_NODES,
INTERSECTION_EMPTY_LEFT,
INTERSECTION_EMPTY_RIGHT,
INTERSECTION_SAME,
INTERSECTION_SHARED_LEFT,
INTERSECTION_SHARED_RIGHT,
IS_SINGLETON_MK_BAG,
MK_BAG_COUNT_NEGATIVE,
REMOVE_FROM_UNION,
REMOVE_MIN,
REMOVE_RETURN_LEFT,
REMOVE_SAME,
SUB_BAG,
SUBTRACT_DISJOINT_SHARED_LEFT,
SUBTRACT_DISJOINT_SHARED_RIGHT,
SUBTRACT_FROM_UNION,
SUBTRACT_MIN,
SUBTRACT_RETURN_LEFT,
SUBTRACT_SAME,
TO_SINGLETON,
UNION_DISJOINT_EMPTY_LEFT,
UNION_DISJOINT_EMPTY_RIGHT,
UNION_DISJOINT_MAX_MIN,
UNION_MAX_EMPTY,
UNION_MAX_SAME_OR_EMPTY,
UNION_MAX_UNION_LEFT,
UNION_MAX_UNION_RIGHT
};
/**
* Converts an rewrite to a string. Note: This function is also used in
* `safe_print()`. Changing this functions name or signature will result in
* `safe_print()` printing "<unsupported>" instead of the proper strings for
* the enum values.
*
* @param r The rewrite
* @return The name of the rewrite
*/
const char* toString(Rewrite r);
/**
* Writes an rewrite name to a stream.
*
* @param out The stream to write to
* @param r The rewrite to write to the stream
* @return The stream
*/
std::ostream& operator<<(std::ostream& out, Rewrite r);
} // namespace bags
} // namespace theory
} // namespace cvc5
#endif /* CVC4__THEORY__BAGS__REWRITES_H */
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