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/********************* */
/*! \file expr_sequence.h
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 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 The sequence data type.
**/
#include "cvc4_public.h"
#ifndef CVC4__EXPR__EXPR_SEQUENCE_H
#define CVC4__EXPR__EXPR_SEQUENCE_H
#include <iosfwd>
#include <memory>
#include <vector>
namespace CVC4 {
// messy; Expr needs ExprSequence (because it's the payload of a
// CONSTANT-kinded expression), and ExprSequence needs Expr.
class Type;
class Expr;
class Sequence;
/** The CVC4 sequence class
*
* This data structure is the domain of values for the sequence type.
*/
class CVC4_PUBLIC ExprSequence
{
public:
/** constructors for ExprSequence
*
* Internally, a CVC4::ExprSequence is represented by a vector of Nodes
* (d_seq), where each Node in this vector must be a constant.
*/
ExprSequence(const Type& type, const std::vector<Expr>& seq);
~ExprSequence();
ExprSequence(const ExprSequence& other);
ExprSequence& operator=(const ExprSequence& other);
bool operator==(const ExprSequence& es) const;
bool operator!=(const ExprSequence& es) const;
bool operator<(const ExprSequence& es) const;
bool operator<=(const ExprSequence& es) const;
bool operator>(const ExprSequence& es) const;
bool operator>=(const ExprSequence& es) const;
const Type& getType() const;
const Sequence& getSequence() const;
private:
/** The element type of the sequence */
std::unique_ptr<Type> d_type;
/** The data of the sequence */
std::unique_ptr<Sequence> d_sequence;
}; /* class ExprSequence */
struct CVC4_PUBLIC ExprSequenceHashFunction
{
size_t operator()(const ::CVC4::ExprSequence& s) const;
}; /* struct ExprSequenceHashFunction */
std::ostream& operator<<(std::ostream& os, const ExprSequence& s) CVC4_PUBLIC;
} // namespace CVC4
#endif /* CVC4__EXPR__SEQUENCE_H */
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