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/********************* */
/*! \file result.h
** \verbatim
** Original author: mdeters
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 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.\endverbatim
**
** \brief Encapsulation of the result of a query.
**
** Encapsulation of the result of a query.
**/
#include "cvc4_public.h"
#ifndef __CVC4__RESULT_H
#define __CVC4__RESULT_H
#include <iostream>
#include <string>
#include "util/exception.h"
namespace CVC4 {
class Result;
std::ostream& operator<<(std::ostream& out, const Result& r) CVC4_PUBLIC;
/**
* Three-valued SMT result, with optional explanation.
*/
class CVC4_PUBLIC Result {
public:
enum Sat {
UNSAT = 0,
SAT = 1,
SAT_UNKNOWN = 2
};
enum Validity {
INVALID = 0,
VALID = 1,
VALIDITY_UNKNOWN = 2
};
enum Type {
TYPE_SAT,
TYPE_VALIDITY,
TYPE_NONE
};
enum UnknownExplanation {
REQUIRES_FULL_CHECK,
INCOMPLETE,
TIMEOUT,
RESOURCEOUT,
MEMOUT,
INTERRUPTED,
NO_STATUS,
UNSUPPORTED,
OTHER,
UNKNOWN_REASON
};
private:
enum Sat d_sat;
enum Validity d_validity;
enum Type d_which;
enum UnknownExplanation d_unknownExplanation;
public:
Result() :
d_sat(SAT_UNKNOWN),
d_validity(VALIDITY_UNKNOWN),
d_which(TYPE_NONE),
d_unknownExplanation(UNKNOWN_REASON) {
}
Result(enum Sat s) :
d_sat(s),
d_validity(VALIDITY_UNKNOWN),
d_which(TYPE_SAT),
d_unknownExplanation(UNKNOWN_REASON) {
CheckArgument(s != SAT_UNKNOWN,
"Must provide a reason for satisfiability being unknown");
}
Result(enum Validity v) :
d_sat(SAT_UNKNOWN),
d_validity(v),
d_which(TYPE_VALIDITY),
d_unknownExplanation(UNKNOWN_REASON) {
CheckArgument(v != VALIDITY_UNKNOWN,
"Must provide a reason for validity being unknown");
}
Result(enum Sat s, enum UnknownExplanation unknownExplanation) :
d_sat(s),
d_validity(VALIDITY_UNKNOWN),
d_which(TYPE_SAT),
d_unknownExplanation(unknownExplanation) {
CheckArgument(s == SAT_UNKNOWN,
"improper use of unknown-result constructor");
}
Result(enum Validity v, enum UnknownExplanation unknownExplanation) :
d_sat(SAT_UNKNOWN),
d_validity(v),
d_which(TYPE_VALIDITY),
d_unknownExplanation(unknownExplanation) {
CheckArgument(v == VALIDITY_UNKNOWN,
"improper use of unknown-result constructor");
}
Result(const std::string& s);
enum Sat isSat() const {
return d_which == TYPE_SAT ? d_sat : SAT_UNKNOWN;
}
enum Validity isValid() const {
return d_which == TYPE_VALIDITY ? d_validity : VALIDITY_UNKNOWN;
}
bool isUnknown() const {
return isSat() == SAT_UNKNOWN && isValid() == VALIDITY_UNKNOWN;
}
Type getType() const {
return d_which;
}
bool isNull() const {
return d_which == TYPE_NONE;
}
enum UnknownExplanation whyUnknown() const {
CheckArgument( isUnknown(), this,
"This result is not unknown, so the reason for "
"being unknown cannot be inquired of it" );
return d_unknownExplanation;
}
bool operator==(const Result& r) const throw();
inline bool operator!=(const Result& r) const throw();
Result asSatisfiabilityResult() const throw();
Result asValidityResult() const throw();
std::string toString() const;
};/* class Result */
inline bool Result::operator!=(const Result& r) const throw() {
return !(*this == r);
}
std::ostream& operator<<(std::ostream& out,
enum Result::Sat s) CVC4_PUBLIC;
std::ostream& operator<<(std::ostream& out,
enum Result::Validity v) CVC4_PUBLIC;
std::ostream& operator<<(std::ostream& out,
enum Result::UnknownExplanation e) CVC4_PUBLIC;
}/* CVC4 namespace */
#endif /* __CVC4__RESULT_H */
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