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eu.lunisolar.magma.func.tuple.LLongPair Maven / Gradle / Ivy
/*
* This file is part of "lunisolar-magma".
*
* (C) Copyright 2014-2019 Lunisolar (http://lunisolar.eu/).
*
* Licensed 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 eu.lunisolar.magma.func.tuple;
import eu.lunisolar.magma.basics.meta.LTuple;
import eu.lunisolar.magma.basics.Null;
import eu.lunisolar.magma.basics.fluent.Fluent;
import eu.lunisolar.magma.func.function.LFunction;
import eu.lunisolar.magma.func.function.to.*;
import eu.lunisolar.magma.func.operator.unary.*;
import eu.lunisolar.magma.func.operator.binary.*;
import eu.lunisolar.magma.func.predicate.*;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import java.util.*;
/**
* Exact equivalent of input parameters used in LBiLongConsumer.
*/
@SuppressWarnings("UnusedDeclaration")
public interface LLongPair extends LTuple, LLongSingle {
int SIZE = 2;
long first();
default long value() {
return first();
}
long second();
default Object get(int index) {
switch (index) {
case 1 :
return first();
case 2 :
return second();
default :
throw new NoSuchElementException();
}
}
/** Tuple size */
default int size() {
return SIZE;
}
/** Static hashCode() implementation method that takes same arguments as fields of the LLongPair and calculates hash from it. */
static int argHashCode(long a1, long a2) {
final int prime = 31;
int result = 1;
result = prime * result + Long.hashCode(a1);
result = prime * result + Long.hashCode(a2);
return result;
}
/** Static equals() implementation that takes same arguments (doubled) as fields of the LLongPair and checks if all values are equal. */
static boolean argEquals(long a1, long a2, long b1, long b2) {
return a1 == b1 && //
a2 == b2; //
}
/**
* Static equals() implementation that takes two tuples asnd checks if they are equal.
*
* Tuples are considered equal if are implementing same interface and their tuple values are equal regardless of the implementing class.
*/
static boolean argEquals(LLongPair the, Object that) {
return Null.equals(the, that, (one, two) -> {
// Intentionally all implementations of LLongPair are allowed.
if (!(two instanceof LLongPair)) {
return false;
}
LLongPair other = (LLongPair) two;
return argEquals(one.first(), one.second(), other.first(), other.second());
});
}
default Iterator iterator() {
return new Iterator() {
private int index;
@Override
public boolean hasNext() {
return index < SIZE;
}
@Override
public Object next() {
index++;
return get(index);
}
};
}
interface ComparableLongPair extends LLongPair, Comparable {
@Override
default int compareTo(LLongPair that) {
return Null.compare(this, that, (one, two) -> {
int retval = 0;
return (retval = Long.compare(one.first(), two.first())) != 0 ? retval : //
(retval = Long.compare(one.second(), two.second())) != 0 ? retval : 0; //
});
}
}
abstract class AbstractLongPair implements LLongPair {
@Override
public boolean equals(Object that) {
return LLongPair.argEquals(this, that);
}
@Override
public int hashCode() {
return LLongPair.argHashCode(first(), second());
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append('(');
sb.append(first());
sb.append(',');
sb.append(second());
sb.append(')');
return sb.toString();
}
}
/**
* Mutable, non-comparable tuple.
*/
final class MutLongPair extends AbstractLongPair {
private long first;
private long second;
public MutLongPair(long a1, long a2) {
this.first = a1;
this.second = a2;
}
public static MutLongPair of(long a1, long a2) {
return new MutLongPair(a1, a2);
}
public static MutLongPair copyOf(LLongPair tuple) {
return of(tuple.first(), tuple.second());
}
public long first() {
return first;
}
public MutLongPair first(long first) {
this.first = first;
return this;
}
public long second() {
return second;
}
public MutLongPair second(long second) {
this.second = second;
return this;
}
public MutLongPair setFirst(long first) {
this.first = first;
return this;
}
/** Sets value if predicate(newValue) OR newValue::predicate is true */
public MutLongPair setFirstIfArg(long first, LLongPredicate predicate) {
if (predicate.test(first)) {
this.first = first;
}
return this;
}
/** Sets value derived from non-null argument, only if argument is not null. */
public MutLongPair setFirstIfArgNotNull(R arg, LToLongFunction func) {
if (arg != null) {
this.first = func.applyAsLong(arg);
}
return this;
}
/** Sets value if predicate(current) OR current::predicate is true */
public MutLongPair setFirstIf(LLongPredicate predicate, long first) {
if (predicate.test(this.first)) {
this.first = first;
}
return this;
}
/** Sets new value if predicate predicate(newValue, current) OR newValue::something(current) is true. */
public MutLongPair setFirstIf(long first, LBiLongPredicate predicate) {
// the order of arguments is intentional, to allow predicate:
if (predicate.test(first, this.first)) {
this.first = first;
}
return this;
}
/** Sets new value if predicate predicate(current, newValue) OR current::something(newValue) is true. */
public MutLongPair setFirstIf(LBiLongPredicate predicate, long first) {
if (predicate.test(this.first, first)) {
this.first = first;
}
return this;
}
public MutLongPair setSecond(long second) {
this.second = second;
return this;
}
/** Sets value if predicate(newValue) OR newValue::predicate is true */
public MutLongPair setSecondIfArg(long second, LLongPredicate predicate) {
if (predicate.test(second)) {
this.second = second;
}
return this;
}
/** Sets value derived from non-null argument, only if argument is not null. */
public MutLongPair setSecondIfArgNotNull(R arg, LToLongFunction func) {
if (arg != null) {
this.second = func.applyAsLong(arg);
}
return this;
}
/** Sets value if predicate(current) OR current::predicate is true */
public MutLongPair setSecondIf(LLongPredicate predicate, long second) {
if (predicate.test(this.second)) {
this.second = second;
}
return this;
}
/** Sets new value if predicate predicate(newValue, current) OR newValue::something(current) is true. */
public MutLongPair setSecondIf(long second, LBiLongPredicate predicate) {
// the order of arguments is intentional, to allow predicate:
if (predicate.test(second, this.second)) {
this.second = second;
}
return this;
}
/** Sets new value if predicate predicate(current, newValue) OR current::something(newValue) is true. */
public MutLongPair setSecondIf(LBiLongPredicate predicate, long second) {
if (predicate.test(this.second, second)) {
this.second = second;
}
return this;
}
public void reset() {
first = 0L;
second = 0L;
}
}
/**
* Mutable, comparable tuple.
*/
final class MutCompLongPair extends AbstractLongPair implements ComparableLongPair {
private long first;
private long second;
public MutCompLongPair(long a1, long a2) {
this.first = a1;
this.second = a2;
}
public static MutCompLongPair of(long a1, long a2) {
return new MutCompLongPair(a1, a2);
}
public static MutCompLongPair copyOf(LLongPair tuple) {
return of(tuple.first(), tuple.second());
}
public long first() {
return first;
}
public MutCompLongPair first(long first) {
this.first = first;
return this;
}
public long second() {
return second;
}
public MutCompLongPair second(long second) {
this.second = second;
return this;
}
public MutCompLongPair setFirst(long first) {
this.first = first;
return this;
}
/** Sets value if predicate(newValue) OR newValue::predicate is true */
public MutCompLongPair setFirstIfArg(long first, LLongPredicate predicate) {
if (predicate.test(first)) {
this.first = first;
}
return this;
}
/** Sets value derived from non-null argument, only if argument is not null. */
public MutCompLongPair setFirstIfArgNotNull(R arg, LToLongFunction func) {
if (arg != null) {
this.first = func.applyAsLong(arg);
}
return this;
}
/** Sets value if predicate(current) OR current::predicate is true */
public MutCompLongPair setFirstIf(LLongPredicate predicate, long first) {
if (predicate.test(this.first)) {
this.first = first;
}
return this;
}
/** Sets new value if predicate predicate(newValue, current) OR newValue::something(current) is true. */
public MutCompLongPair setFirstIf(long first, LBiLongPredicate predicate) {
// the order of arguments is intentional, to allow predicate:
if (predicate.test(first, this.first)) {
this.first = first;
}
return this;
}
/** Sets new value if predicate predicate(current, newValue) OR current::something(newValue) is true. */
public MutCompLongPair setFirstIf(LBiLongPredicate predicate, long first) {
if (predicate.test(this.first, first)) {
this.first = first;
}
return this;
}
public MutCompLongPair setSecond(long second) {
this.second = second;
return this;
}
/** Sets value if predicate(newValue) OR newValue::predicate is true */
public MutCompLongPair setSecondIfArg(long second, LLongPredicate predicate) {
if (predicate.test(second)) {
this.second = second;
}
return this;
}
/** Sets value derived from non-null argument, only if argument is not null. */
public MutCompLongPair setSecondIfArgNotNull(R arg, LToLongFunction func) {
if (arg != null) {
this.second = func.applyAsLong(arg);
}
return this;
}
/** Sets value if predicate(current) OR current::predicate is true */
public MutCompLongPair setSecondIf(LLongPredicate predicate, long second) {
if (predicate.test(this.second)) {
this.second = second;
}
return this;
}
/** Sets new value if predicate predicate(newValue, current) OR newValue::something(current) is true. */
public MutCompLongPair setSecondIf(long second, LBiLongPredicate predicate) {
// the order of arguments is intentional, to allow predicate:
if (predicate.test(second, this.second)) {
this.second = second;
}
return this;
}
/** Sets new value if predicate predicate(current, newValue) OR current::something(newValue) is true. */
public MutCompLongPair setSecondIf(LBiLongPredicate predicate, long second) {
if (predicate.test(this.second, second)) {
this.second = second;
}
return this;
}
public void reset() {
first = 0L;
second = 0L;
}
}
/**
* Immutable, non-comparable tuple.
*/
@Immutable
final class ImmLongPair extends AbstractLongPair {
private final long first;
private final long second;
public ImmLongPair(long a1, long a2) {
this.first = a1;
this.second = a2;
}
public static ImmLongPair of(long a1, long a2) {
return new ImmLongPair(a1, a2);
}
public static ImmLongPair copyOf(LLongPair tuple) {
return of(tuple.first(), tuple.second());
}
public long first() {
return first;
}
public long second() {
return second;
}
}
/**
* Immutable, comparable tuple.
*/
@Immutable
final class ImmCompLongPair extends AbstractLongPair implements ComparableLongPair {
private final long first;
private final long second;
public ImmCompLongPair(long a1, long a2) {
this.first = a1;
this.second = a2;
}
public static ImmCompLongPair of(long a1, long a2) {
return new ImmCompLongPair(a1, a2);
}
public static ImmCompLongPair copyOf(LLongPair tuple) {
return of(tuple.first(), tuple.second());
}
public long first() {
return first;
}
public long second() {
return second;
}
}
}
