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/********************* -*- C++ -*- */
/** result.h
** Original author: mdeters
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.
**
** Encapsulation of the result of a query.
**/
#ifndef __CVC4__RESULT_H
#define __CVC4__RESULT_H
namespace CVC4 {
// TODO: perhaps best to templatize Result on its Kind (SAT/Validity),
// but this requires doing the same for Prover and needs discussion.
// TODO: subclass to provide models, etc. This is really just
// intended as a three-valued response code.
/**
* Three-valued, immutable SMT result, with optional explanation.
*/
class Result {
public:
enum SAT {
UNSAT = 0,
SAT = 1,
SAT_UNKNOWN = 2
};
enum Validity {
INVALID = 0,
VALID = 1,
VALIDITY_UNKNOWN = 2
};
enum UnknownExplanation {
REQUIRES_FULL_CHECK,
INCOMPLETE,
TIMEOUT,
BAIL,
OTHER
};
private:
enum SAT d_sat;
enum Validity d_validity;
enum { TYPE_SAT, TYPE_VALIDITY } d_which;
friend std::ostream& CVC4::operator<<(std::ostream& out, Result r);
public:
Result(enum SAT s) : d_sat(s), d_validity(VALIDITY_UNKNOWN), d_which(TYPE_SAT) {}
Result(enum Validity v) : d_sat(SAT_UNKNOWN), d_validity(v), d_which(TYPE_VALIDITY) {}
enum SAT isSAT();
enum Validity isValid();
enum UnknownExplanation whyUnknown();
};/* class Result */
inline std::ostream& operator<<(std::ostream& out, Result r) {
if(r.d_which == Result::TYPE_SAT) {
switch(r.d_sat) {
case Result::UNSAT: out << "UNSAT"; break;
case Result::SAT: out << "SAT"; break;
case Result::SAT_UNKNOWN: out << "SAT_UNKNOWN"; break;
}
} else {
switch(r.d_validity) {
case Result::INVALID: out << "INVALID"; break;
case Result::VALID: out << "VALID"; break;
case Result::VALIDITY_UNKNOWN: out << "VALIDITY_UNKNOWN"; break;
}
}
return out;
}
}/* CVC4 namespace */
#endif /* __CVC4__RESULT_H */
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