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/********************* */
/*! \file dimacs.h
** \verbatim
** Top contributors (to current version):
** Alex Ozdemir
** 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 DIMACS SAT Problem Format
**
** Defines serialization/deserialization for SAT problems as DIMACS
**/
#include "cvc4_private.h"
#ifndef CVC4__PROOF__DIMACS_H
#define CVC4__PROOF__DIMACS_H
#include <iosfwd>
#include <memory>
#include <unordered_map>
#include "proof/clause_id.h"
#include "prop/sat_solver_types.h"
namespace CVC4 {
namespace proof {
/**
* Prints the literal as a (+) or (-) int
* Not operator<< b/c that represents negation as ~
*
* @param o where to print
* @param l the literal to print
*
* @return the original stream
*/
std::ostream& textOut(std::ostream& o, const prop::SatLiteral& l);
/**
* Prints the clause as a space-separated list of ints
* Not operator<< b/c that represents literal negation as ~
*
* @param o where to print
* @param c the clause to print
*
* @return the original stream
*/
std::ostream& textOut(std::ostream& o, const prop::SatClause& c);
/**
* Prints a CNF formula in DIMACS format
*
* @param o where to print to
* @param usedClauses the CNF formula
*/
void printDimacs(std::ostream& o,
const std::unordered_map<ClauseId, prop::SatClause>& clauses,
const std::vector<ClauseId>& usedIndices);
std::vector<prop::SatClause> parseDimacs(std::istream& i);
} // namespace proof
} // namespace CVC4
#endif // CVC4__PROOF__DIMACS_H
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