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eu.lunisolar.magma.func.operator.binary.LBinaryOperator 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.operator.binary;
import javax.annotation.Nonnull; // NOSONAR
import javax.annotation.Nullable; // NOSONAR
import java.util.Comparator; // NOSONAR
import java.util.Objects; // NOSONAR
import eu.lunisolar.magma.basics.*; //NOSONAR
import eu.lunisolar.magma.basics.builder.*; // NOSONAR
import eu.lunisolar.magma.basics.exceptions.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.aType.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.type.*; // NOSONAR
import eu.lunisolar.magma.basics.meta.functional.domain.*; // NOSONAR
import eu.lunisolar.magma.func.IA;
import eu.lunisolar.magma.func.SA;
import eu.lunisolar.magma.func.*; // NOSONAR
import eu.lunisolar.magma.func.tuple.*; // NOSONAR
import java.util.function.*; // NOSONAR
import java.util.*; // NOSONAR
import java.lang.reflect.*;
import eu.lunisolar.magma.func.action.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.bi.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.obj.*; // NOSONAR
import eu.lunisolar.magma.func.consumer.primitives.tri.*; // NOSONAR
import eu.lunisolar.magma.func.function.*; // NOSONAR
import eu.lunisolar.magma.func.function.conversion.*; // NOSONAR
import eu.lunisolar.magma.func.function.from.*; // NOSONAR
import eu.lunisolar.magma.func.function.to.*; // NOSONAR
import eu.lunisolar.magma.func.operator.binary.*; // NOSONAR
import eu.lunisolar.magma.func.operator.ternary.*; // NOSONAR
import eu.lunisolar.magma.func.operator.unary.*; // NOSONAR
import eu.lunisolar.magma.func.predicate.*; // NOSONAR
import eu.lunisolar.magma.func.supplier.*; // NOSONAR
/**
* Non-throwing functional interface (lambda) LBinaryOperator for Java 8.
*
* Type: operator
*
* Domain (lvl: 2): T a1,T a2
*
* Co-domain: T
*
*/
@FunctionalInterface
@SuppressWarnings("UnusedDeclaration")
public interface LBinaryOperator extends BinaryOperator, MetaOperator, MetaInterface.NonThrowing, Codomain>, Domain2, a>, LBiFunction { // NOSONAR
String DESCRIPTION = "LBinaryOperator: T apply(T a1,T a2)";
default T tupleApply(LPair args) {
return apply(args.first(), args.second());
}
/** Function call that handles exceptions according to the instructions. */
default T handlingApply(T a1, T a2, HandlingInstructions handling) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
throw Handler.handleOrNest(e, handling);
}
}
default LBinaryOperator handling(HandlingInstructions handling) {
return (a1, a2) -> handlingApply(a1, a2, handling);
}
default T apply(T a1, T a2, @Nonnull ExWMF exF, @Nonnull String newMessage, @Nullable Object... messageParams) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
throw Handling.wrap(e, exF, newMessage, messageParams);
}
}
default LBinaryOperator trying(@Nonnull ExWMF exF, @Nonnull String newMessage, @Nullable Object... messageParams) {
return (a1, a2) -> apply(a1, a2, exF, newMessage, messageParams);
}
default T apply(T a1, T a2, @Nonnull ExWF exF) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
throw Handling.wrap(e, exF);
}
}
default LBinaryOperator trying(@Nonnull ExWF exF) {
return (a1, a2) -> apply(a1, a2, exF);
}
default T applyThen(T a1, T a2, @Nonnull LFunction handler) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
Handling.handleErrors(e);
return handler.apply(e);
}
}
default LBinaryOperator tryingThen(@Nonnull LFunction handler) {
return (a1, a2) -> applyThen(a1, a2, handler);
}
/** Function call that handles exceptions by always nesting checked exceptions and propagating the others as is. */
default T nestingApply(T a1, T a2) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
throw Handling.nestCheckedAndThrow(e);
}
}
/** Function call that handles exceptions by always propagating them as is, even when they are undeclared checked ones. */
default T shovingApply(T a1, T a2) {
try {
return this.applyX(a1, a2);
} catch (Throwable e) { // NOSONAR
throw Handling.shoveIt(e);
}
}
static T handlingApply(T a1, T a2, LBinaryOperator func, HandlingInstructions handling) { // <-
Null.nonNullArg(func, "func");
return func.handlingApply(a1, a2, handling);
}
static T tryApply(T a1, T a2, LBinaryOperator func) {
Null.nonNullArg(func, "func");
return func.nestingApply(a1, a2);
}
static T tryApply(T a1, T a2, LBinaryOperator func, @Nonnull ExWMF exF, @Nonnull String newMessage, @Nullable Object... messageParams) {
Null.nonNullArg(func, "func");
return func.apply(a1, a2, exF, newMessage, messageParams);
}
static T tryApply(T a1, T a2, LBinaryOperator func, @Nonnull ExWF exF) {
Null.nonNullArg(func, "func");
return func.apply(a1, a2, exF);
}
static T tryApplyThen(T a1, T a2, LBinaryOperator func, @Nonnull LFunction handler) {
Null.nonNullArg(func, "func");
return func.applyThen(a1, a2, handler);
}
default T failSafeApply(T a1, T a2, @Nonnull LBinaryOperator failSafe) {
try {
return apply(a1, a2);
} catch (Throwable e) { // NOSONAR
Handling.handleErrors(e);
return failSafe.apply(a1, a2);
}
}
static T failSafeApply(T a1, T a2, LBinaryOperator func, @Nonnull LBinaryOperator failSafe) {
Null.nonNullArg(failSafe, "failSafe");
if (func == null) {
return failSafe.apply(a1, a2);
} else {
return func.failSafeApply(a1, a2, failSafe);
}
}
static LBinaryOperator failSafe(LBinaryOperator func, @Nonnull LBinaryOperator failSafe) {
Null.nonNullArg(failSafe, "failSafe");
return (a1, a2) -> failSafeApply(a1, a2, func, failSafe);
}
LSupplier NULL_VALUE_MESSAGE_SUPPLIER = () -> "Evaluated value by nonNullApply() method cannot be null (" + DESCRIPTION + ").";
/** Function call that ensures the result is not null */
@Nonnull
default T nonNullApply(T a1, T a2) {
return Null.requireNonNull(apply(a1, a2), NULL_VALUE_MESSAGE_SUPPLIER);
}
/** Returns description of the functional interface. */
@Nonnull
default String functionalInterfaceDescription() {
return LBinaryOperator.DESCRIPTION;
}
/** From-To. Intended to be used with non-capturing lambda. */
public static void fromTo(int min_i, int max_i, T a1, T a2, LBinaryOperator func) {
Null.nonNullArg(func, "func");
if (min_i <= max_i) {
for (int i = min_i; i <= max_i; i++) {
func.apply(a1, a2);
}
} else {
for (int i = min_i; i >= max_i; i--) {
func.apply(a1, a2);
}
}
}
/** From-To. Intended to be used with non-capturing lambda. */
public static void fromTill(int min_i, int max_i, T a1, T a2, LBinaryOperator func) {
Null.nonNullArg(func, "func");
if (min_i <= max_i) {
for (int i = min_i; i < max_i; i++) {
func.apply(a1, a2);
}
} else {
for (int i = min_i; i > max_i; i--) {
func.apply(a1, a2);
}
}
}
/** From-To. Intended to be used with non-capturing lambda. */
public static void times(int max_i, T a1, T a2, LBinaryOperator func) {
if (max_i < 0)
return;
fromTill(0, max_i, a1, a2, func);
}
public default LUnaryOperator lShrink(LUnaryOperator left) {
return a2 -> apply(left.apply(a2), a2);
}
public default LUnaryOperator lShrinkc(T a1) {
return a2 -> apply(a1, a2);
}
public static LUnaryOperator lShrinked(LUnaryOperator left, LBinaryOperator func) {
return func.lShrink(left);
}
public static LUnaryOperator lShrinkedc(T a1, LBinaryOperator func) {
return func.lShrinkc(a1);
}
public default LUnaryOperator rShrink(LUnaryOperator right) {
return a1 -> apply(a1, right.apply(a1));
}
public default LUnaryOperator rShrinkc(T a2) {
return a1 -> apply(a1, a2);
}
public static LUnaryOperator rShrinked(LUnaryOperator right, LBinaryOperator func) {
return func.rShrink(right);
}
public static LUnaryOperator rShrinkedc(T a2, LBinaryOperator func) {
return func.rShrinkc(a2);
}
/** */
public static LBinaryOperator uncurry(LFunction> func) {
return (T a1, T a2) -> func.apply(a1).apply(a2);
}
/** Cast that removes generics. */
public default LBinaryOperator untyped() {
return this;
}
/** Cast that replace generics. */
public default LBinaryOperator cast() {
return untyped();
}
/** Cast that replace generics. */
public static LBinaryOperator cast(LBinaryOperator function) {
return (LBinaryOperator) function;
}
/** Captures arguments but delays the evaluation. */
default LSupplier capture(T a1, T a2) {
return () -> this.apply(a1, a2);
}
/** Creates function that always returns the same value. */
static LBinaryOperator constant(T r) {
return (a1, a2) -> r;
}
/** Captures single parameter function into this interface where only 1st parameter will be used. */
@Nonnull
static LBinaryOperator apply1st(@Nonnull LUnaryOperator func) {
return (a1, a2) -> func.apply(a1);
}
/** Captures single parameter function into this interface where only 2nd parameter will be used. */
@Nonnull
static LBinaryOperator apply2nd(@Nonnull LUnaryOperator func) {
return (a1, a2) -> func.apply(a2);
}
/** Convenient method in case lambda expression is ambiguous for the compiler (that might happen for overloaded methods accepting different interfaces). */
@Nonnull
static LBinaryOperator binaryOp(final @Nonnull LBinaryOperator lambda) {
Null.nonNullArg(lambda, "lambda");
return lambda;
}
@Nonnull
static LBinaryOperator recursive(final @Nonnull LFunction, LBinaryOperator> selfLambda) {
final LBinaryOperatorSingle single = new LBinaryOperatorSingle();
LBinaryOperator func = selfLambda.apply(single);
single.target = func;
return func;
}
final class LBinaryOperatorSingle implements LSingle>, LBinaryOperator {
private LBinaryOperator target = null;
@Override
public T applyX(T a1, T a2) throws Throwable {
return target.applyX(a1, a2);
}
@Override
public LBinaryOperator value() {
return target;
}
}
@Nonnull
static LBinaryOperator binaryOpThrowing(final @Nonnull ExF exF) {
Null.nonNullArg(exF, "exF");
return (a1, a2) -> {
throw exF.produce();
};
}
@Nonnull
static LBinaryOperator binaryOpThrowing(final String message, final @Nonnull ExMF exF) {
Null.nonNullArg(exF, "exF");
return (a1, a2) -> {
throw exF.produce(message);
};
}
static T call(T a1, T a2, final @Nonnull LBinaryOperator lambda) {
Null.nonNullArg(lambda, "lambda");
return lambda.apply(a1, a2);
}
//
/** Wraps JRE instance. */
@Nonnull
static LBinaryOperator wrap(final BinaryOperator other) {
return other::apply;
}
//
//
/** Safe instance. That always returns the same value (as produce). */
@Nonnull
static LBinaryOperator safe() {
return LBinaryOperator::produce;
}
/** Safe instance supplier. Returns supplier of safe() instance. */
@Nonnull
static LSupplier> safeSupplier() {
return () -> safe();
}
/** Safe wrapping. Either argument function is returned (if it is not null) or safe() instance. */
@Nonnull
static LBinaryOperator safe(final @Nullable LBinaryOperator other) {
if (other == null) {
return safe();
} else {
return other;
}
}
/** Safe supplier. Either argument supplier is returned (if it is not null) or supplier of safe() instance. */
@Nonnull
static LSupplier> safeSupplier(final @Nullable LSupplier> supplier) {
if (supplier == null) {
return safeSupplier();
} else {
return supplier;
}
}
//
/**
* Creates function that returns the lesser value according to the comparator.
* @see {@link java.util.function.BinaryOperator#minBy}
*/
@Nonnull
static LBinaryOperator minBy(@Nonnull Comparator comparator) {
Null.nonNullArg(comparator, "comparator");
return (a, b) -> comparator.compare(a, b) <= 0 ? a : b;
}
/**
* Creates function that returns the lesser value according to the comparator.
* @see {@link java.util.function.BinaryOperator#maxBy}
*/
@Nonnull
static LBinaryOperator maxBy(@Nonnull Comparator comparator) {
Null.nonNullArg(comparator, "comparator");
return (a, b) -> comparator.compare(a, b) >= 0 ? a : b;
}
//
/** Combines two functions together in a order. */
@Nonnull
default LBiFunction then(@Nonnull LFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.apply(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToByteBiFunction thenToByte(@Nonnull LToByteFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsByte(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToSrtBiFunction thenToSrt(@Nonnull LToSrtFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsSrt(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToIntBiFunction thenToInt(@Nonnull LToIntFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsInt(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToLongBiFunction thenToLong(@Nonnull LToLongFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsLong(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToFltBiFunction thenToFlt(@Nonnull LToFltFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsFlt(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToDblBiFunction thenToDbl(@Nonnull LToDblFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsDbl(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LToCharBiFunction thenToChar(@Nonnull LToCharFunction after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.applyAsChar(this.apply(a1, a2));
}
/** Combines two functions together in a order. */
@Nonnull
default LBiPredicate thenToBool(@Nonnull LPredicate after) {
Null.nonNullArg(after, "after");
return (a1, a2) -> after.test(this.apply(a1, a2));
}
//
//
//
/** Converts to function that makes sure that the result is not null. */
@Nonnull
default LBinaryOperator nonNullable() {
return this::nonNullApply;
}
/** Does nothing (LBinaryOperator) Operator */
public static T produce(T a1, T a2) {
return (T) Function4U.defaultObject;
}
/**
* For each element (or tuple) from arguments, calls the function and passes the result to consumer.
* Thread safety, fail-fast, fail-safety of this method is not expected.
*/
default void forEach(IndexedRead> ia1, C1 source1, IndexedRead> ia2, C2 source2, LConsumer consumer) {
int size = ia1.size(source1);
LOiFunction oiFunc1 = (LOiFunction) ia1.getter();
size = Integer.min(size, ia2.size(source2));
LOiFunction oiFunc2 = (LOiFunction) ia2.getter();
int i = 0;
for (; i < size; i++) {
T a1 = oiFunc1.apply(source1, i);
T a2 = oiFunc2.apply(source2, i);
consumer.accept(this.apply(a1, a2));
}
}
/**
* For each element (or tuple) from arguments, calls the function and passes the result to consumer.
* Thread safety, fail-fast, fail-safety of this method is not expected.
*/
default void iterate(SequentialRead> sa1, C1 source1, IndexedRead> ia2, C2 source2, LConsumer consumer) {
Object iterator1 = ((LFunction) sa1.adapter()).apply(source1);
LPredicate testFunc1 = (LPredicate) sa1.tester();
LFunction nextFunc1 = (LFunction) sa1.supplier();
int size = ia2.size(source2);
LOiFunction oiFunc2 = (LOiFunction) ia2.getter();
int i = 0;
while (testFunc1.test(iterator1) && i < size) {
T a1 = nextFunc1.apply(iterator1);
T a2 = oiFunc2.apply(source2, i);
consumer.accept(this.apply(a1, a2));
i++;
}
}
/**
* For each element (or tuple) from arguments, calls the function and passes the result to consumer.
* Thread safety, fail-fast, fail-safety of this method is not expected.
*/
default void iterate(IndexedRead> ia1, C1 source1, SequentialRead> sa2, C2 source2, LConsumer consumer) {
int size = ia1.size(source1);
LOiFunction oiFunc1 = (LOiFunction) ia1.getter();
Object iterator2 = ((LFunction) sa2.adapter()).apply(source2);
LPredicate testFunc2 = (LPredicate) sa2.tester();
LFunction nextFunc2 = (LFunction) sa2.supplier();
int i = 0;
while (i < size && testFunc2.test(iterator2)) {
T a1 = oiFunc1.apply(source1, i);
T a2 = nextFunc2.apply(iterator2);
consumer.accept(this.apply(a1, a2));
i++;
}
}
/**
* For each element (or tuple) from arguments, calls the function and passes the result to consumer.
* Thread safety, fail-fast, fail-safety of this method depends highly on the arguments.
*/
default void iterate(SequentialRead> sa1, C1 source1, SequentialRead> sa2, C2 source2, LConsumer consumer) {
Object iterator1 = ((LFunction) sa1.adapter()).apply(source1);
LPredicate testFunc1 = (LPredicate) sa1.tester();
LFunction nextFunc1 = (LFunction) sa1.supplier();
Object iterator2 = ((LFunction) sa2.adapter()).apply(source2);
LPredicate testFunc2 = (LPredicate) sa2.tester();
LFunction nextFunc2 = (LFunction) sa2.supplier();
while (testFunc1.test(iterator1) && testFunc2.test(iterator2)) {
T a1 = nextFunc1.apply(iterator1);
T a2 = nextFunc2.apply(iterator2);
consumer.accept(this.apply(a1, a2));
}
}
}
