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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.reasoning.literal;
import tools.refinery.store.query.InvalidQueryException;
import tools.refinery.store.query.literal.CallLiteral;
public final class PartialLiterals {
private PartialLiterals() {
throw new IllegalStateException("This is a static utility class and should not be instantiated directly");
}
public static CallLiteral may(CallLiteral literal) {
return addModality(literal, Modality.MAY, Concreteness.PARTIAL);
}
public static CallLiteral must(CallLiteral literal) {
return addModality(literal, Modality.MUST, Concreteness.PARTIAL);
}
public static CallLiteral candidateMay(CallLiteral literal) {
return addModality(literal, Modality.MAY, Concreteness.CANDIDATE);
}
public static CallLiteral candidateMust(CallLiteral literal) {
return addModality(literal, Modality.MUST, Concreteness.CANDIDATE);
}
public static CallLiteral addModality(CallLiteral literal, Modality modality, Concreteness concreteness) {
var target = literal.getTarget();
if (target instanceof ModalConstraint) {
throw new InvalidQueryException("Literal %s already has modality".formatted(literal));
}
var polarity = literal.getPolarity();
var modalTarget = new ModalConstraint(modality.commute(polarity), concreteness, target);
return new CallLiteral(polarity, modalTarget, literal.getArguments());
}
}
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