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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.logic.term;
import org.jetbrains.annotations.Nullable;
import tools.refinery.logic.InvalidQueryException;
import tools.refinery.logic.equality.LiteralEqualityHelper;
import tools.refinery.logic.equality.LiteralHashCodeHelper;
import tools.refinery.logic.literal.EquivalenceLiteral;
import tools.refinery.logic.literal.Literal;
import tools.refinery.logic.substitution.Substitution;
import tools.refinery.logic.valuation.Valuation;
import java.util.Objects;
public final class DataVariable<T> extends AnyDataVariable implements Term<T> {
private final Class<T> type;
DataVariable(String name, Class<T> type) {
super(name);
this.type = type;
}
@Override
public Class<T> getType() {
return type;
}
@Override
public DataVariable<T> renew(@Nullable String name) {
return new DataVariable<>(name, type);
}
@Override
public DataVariable<T> renew() {
return renew(getExplicitName());
}
@Override
public <U> DataVariable<U> asDataVariable(Class<U> newType) {
if (!getType().equals(newType)) {
throw new InvalidQueryException("%s is not of type %s but of type %s"
.formatted(this, newType.getName(), getType().getName()));
}
@SuppressWarnings("unchecked")
var result = (DataVariable<U>) this;
return result;
}
@Override
public T evaluate(Valuation valuation) {
return valuation.getValue(this);
}
@Override
public Term<T> substitute(Substitution substitution) {
return substitution.getTypeSafeSubstitute(this);
}
@Override
public boolean equalsWithSubstitution(LiteralEqualityHelper helper, AnyTerm other) {
return other instanceof DataVariable<?> dataVariable && helper.variableEqual(this, dataVariable);
}
@Override
public int hashCodeWithSubstitution(LiteralHashCodeHelper helper) {
return helper.getVariableHashCode(this);
}
@Override
public int hashCodeWithSubstitution(int sequenceNumber) {
return Objects.hash(type, sequenceNumber);
}
public Literal assign(AssignedValue<T> value) {
return value.toLiteral(this);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
DataVariable<?> that = (DataVariable<?>) o;
return type.equals(that.type);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), type);
}
public EquivalenceLiteral isEquivalent(DataVariable<T> other) {
return new EquivalenceLiteral(true, this, other);
}
public EquivalenceLiteral notEquivalent(DataVariable<T> other) {
return new EquivalenceLiteral(false, this, other);
}
}
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