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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.yql;
import com.google.common.base.Joiner;
import com.google.common.base.Preconditions;
import java.util.Set;
/**
* Check that an argument is an OperatorNode of a particular operator set.
*/
class NodeTypeChecker extends OperatorTypeChecker {
private final Class<? extends Operator> operatorType;
private final Set<? extends Operator> operators;
public NodeTypeChecker(Operator parent, int idx, Class<? extends Operator> operatorType, Set<? extends Operator> operators) {
super(parent, idx);
this.operatorType = operatorType;
this.operators = operators;
}
@Override
public void check(Object argument) {
Preconditions.checkNotNull(argument, "Argument %s of %s must not be null", idx, parent);
Preconditions.checkArgument(argument instanceof OperatorNode, "Argument %s of %s must be an OperatorNode<%s> (is %s).", idx, parent, operatorType.getName(), argument.getClass());
OperatorNode<?> node = (OperatorNode<?>) argument;
Operator op = node.getOperator();
Preconditions.checkArgument(operatorType.isInstance(op), "Argument %s of %s must be an OperatorNode<%s> (is: %s).", idx, parent, operatorType.getName(), op.getClass());
if (!operators.isEmpty()) {
Preconditions.checkArgument(operators.contains(op), "Argument %s of %s must be %s (is %s).", idx, parent, Joiner.on("|").join(operators), op);
}
}
}
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