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/*
* 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.runtime;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
/**
* Utility methods called by generated code.
*/
public class Utilities {
// Even though this is a utility class (all methods are static), we cannot
// make the constructor private. Because Janino doesn't do static import,
// generated code is placed in sub-classes.
protected Utilities() {
}
/** @deprecated Use {@link java.util.Objects#equals}. */
@Deprecated // to be removed before 2.0
public static boolean equal(Object o0, Object o1) {
// Same as java.lang.Objects.equals (JDK 1.7 and later)
// and com.hazelcast.com.google.common.base.Objects.equal
return Objects.equals(o0, o1);
}
public static int hash(Object v) {
return v == null ? 0 : v.hashCode();
}
/** Computes the hash code of a {@code double} value. Equivalent to
* {@link Double}{@code .hashCode(double)}, but that method was only
* introduced in JDK 1.8.
*
* @param v Value
* @return Hash code
* @deprecated Use {@link Double#hashCode(double)}
*/
@Deprecated // to be removed before 2.0
public static int hashCode(double v) {
return Double.hashCode(v);
}
/** Computes the hash code of a {@code float} value. Equivalent to
* {@link Float}{@code .hashCode(float)}, but that method was only
* introduced in JDK 1.8.
*
* @param v Value
* @return Hash code
* @deprecated Use {@link Float#hashCode(float)}
*/
@Deprecated // to be removed before 2.0
public static int hashCode(float v) {
return Float.hashCode(v);
}
/** Computes the hash code of a {@code long} value. Equivalent to
* {@link Long}{@code .hashCode(long)}, but that method was only
* introduced in JDK 1.8.
*
* @param v Value
* @return Hash code
* @deprecated Use {@link Long#hashCode(long)}
*/
@Deprecated // to be removed before 2.0
public static int hashCode(long v) {
return Long.hashCode(v);
}
/** Computes the hash code of a {@code boolean} value. Equivalent to
* {@link Boolean}{@code .hashCode(boolean)}, but that method was only
* introduced in JDK 1.8.
*
* @param v Value
* @return Hash code
* @deprecated Use {@link Boolean#hashCode(boolean)}
*/
@Deprecated // to be removed before 2.0
public static int hashCode(boolean v) {
return Boolean.hashCode(v);
}
public static int hash(int h, boolean v) {
return h * 31 + hashCode(v);
}
public static int hash(int h, byte v) {
return h * 31 + v;
}
public static int hash(int h, char v) {
return h * 31 + v;
}
public static int hash(int h, short v) {
return h * 31 + v;
}
public static int hash(int h, int v) {
return h * 31 + v;
}
public static int hash(int h, long v) {
return h * 31 + Long.hashCode(v);
}
public static int hash(int h, float v) {
return hash(h, Float.hashCode(v));
}
public static int hash(int h, double v) {
return hash(h, Double.hashCode(v));
}
public static int hash(int h, Object v) {
return h * 31 + (v == null ? 1 : v.hashCode());
}
public static int compare(boolean v0, boolean v1) {
return Boolean.compare(v0, v1);
}
public static int compare(byte v0, byte v1) {
return Byte.compare(v0, v1);
}
public static int compare(char v0, char v1) {
return Character.compare(v0, v1);
}
public static int compare(short v0, short v1) {
return Short.compare(v0, v1);
}
public static int compare(int v0, int v1) {
return Integer.compare(v0, v1);
}
public static int compare(long v0, long v1) {
return Long.compare(v0, v1);
}
public static int compare(float v0, float v1) {
return Float.compare(v0, v1);
}
public static int compare(double v0, double v1) {
return Double.compare(v0, v1);
}
public static int compare(List v0, List v1) {
//noinspection unchecked
final Iterator iterator0 = v0.iterator();
final Iterator iterator1 = v1.iterator();
for (;;) {
if (!iterator0.hasNext()) {
return !iterator1.hasNext()
? 0
: -1;
}
if (!iterator1.hasNext()) {
return 1;
}
final Object o0 = iterator0.next();
final Object o1 = iterator1.next();
int c = compare_(o0, o1);
if (c != 0) {
return c;
}
}
}
private static int compare_(Object o0, Object o1) {
if (o0 instanceof Comparable) {
return compare((Comparable) o0, (Comparable) o1);
}
return compare((List) o0, (List) o1);
}
public static int compare(Comparable v0, Comparable v1) {
//noinspection unchecked
return v0.compareTo(v1);
}
public static int compareNullsFirst(Comparable v0, Comparable v1) {
//noinspection unchecked
return v0 == v1 ? 0
: v0 == null ? -1
: v1 == null ? 1
: v0.compareTo(v1);
}
public static int compareNullsLast(Comparable v0, Comparable v1) {
//noinspection unchecked
return v0 == v1 ? 0
: v0 == null ? 1
: v1 == null ? -1
: v0.compareTo(v1);
}
public static int compareNullsLast(List v0, List v1) {
//noinspection unchecked
return v0 == v1 ? 0
: v0 == null ? 1
: v1 == null ? -1
: FlatLists.ComparableListImpl.compare(v0, v1);
}
/** Creates a pattern builder. */
public static Pattern.PatternBuilder patternBuilder() {
return Pattern.builder();
}
}
