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package tools.refinery.store.query.literal;
import tools.refinery.store.query.Variable;
import tools.refinery.store.query.equality.LiteralEqualityHelper;
import tools.refinery.store.query.substitution.Substitution;
import java.util.Set;
public enum BooleanLiteral implements PolarLiteral<BooleanLiteral> {
TRUE(true),
FALSE(false);
private final boolean value;
BooleanLiteral(boolean value) {
this.value = value;
}
@Override
public void collectAllVariables(Set<Variable> variables) {
// No variables to collect.
}
@Override
public Literal substitute(Substitution substitution) {
// No variables to substitute.
return this;
}
@Override
public LiteralReduction getReduction() {
return value ? LiteralReduction.ALWAYS_TRUE : LiteralReduction.ALWAYS_FALSE;
}
@Override
public BooleanLiteral negate() {
return fromBoolean(!value);
}
@Override
public boolean equalsWithSubstitution(LiteralEqualityHelper helper, Literal other) {
return equals(other);
}
@Override
public String toString() {
return Boolean.toString(value);
}
public static BooleanLiteral fromBoolean(boolean value) {
return value ? TRUE : FALSE;
}
}
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