com.hazelcast.org.apache.calcite.linq4j.tree.IndexExpression Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.org.apache.calcite.linq4j.tree;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
import java.util.List;
import java.util.Objects;
import static java.util.Objects.requireNonNull;
/**
* Represents indexing a property or array.
*/
public class IndexExpression extends Expression {
public final Expression array;
public final List indexExpressions;
public IndexExpression(Expression array, List indexExpressions) {
super(ExpressionType.ArrayIndex,
requireNonNull(
Types.getComponentType(array.getType()),
() -> "component type for " + array));
assert indexExpressions != null : "indexExpressions should not be null";
assert !indexExpressions.isEmpty() : "indexExpressions should not be empty";
this.array = array;
this.indexExpressions = indexExpressions;
}
@Override public Expression accept(Shuttle shuttle) {
shuttle = shuttle.preVisit(this);
Expression array = this.array.accept(shuttle);
List indexExpressions = Expressions.acceptExpressions(
this.indexExpressions, shuttle);
return shuttle.visit(this, array, indexExpressions);
}
@Override public R accept(Visitor visitor) {
return visitor.visit(this);
}
@Override void accept(ExpressionWriter writer, int lprec, int rprec) {
array.accept(writer, lprec, nodeType.lprec);
writer.list("[", ", ", "]", indexExpressions);
}
@Override public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
if (!super.equals(o)) {
return false;
}
IndexExpression that = (IndexExpression) o;
if (!array.equals(that.array)) {
return false;
}
if (!indexExpressions.equals(that.indexExpressions)) {
return false;
}
return true;
}
@Override public int hashCode() {
return Objects.hash(nodeType, type, array, indexExpressions);
}
}
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