/*
 * Copyright (c) 2018 Goldman Sachs and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.impl.utility.primitive;

import org.eclipse.collections.api.DoubleIterable;
import org.eclipse.collections.api.LazyDoubleIterable;
import org.eclipse.collections.api.LazyIterable;
import org.eclipse.collections.api.block.function.primitive.DoubleToObjectFunction;
import org.eclipse.collections.api.block.predicate.primitive.DoublePredicate;
import org.eclipse.collections.api.block.procedure.primitive.DoubleProcedure;
import org.eclipse.collections.impl.factory.primitive.DoubleLists;
import org.eclipse.collections.impl.lazy.primitive.CollectDoubleToObjectIterable;
import org.eclipse.collections.impl.lazy.primitive.FlatCollectDoubleToObjectIterable;
import org.eclipse.collections.impl.lazy.primitive.LazyDoubleIterableAdapter;
import org.eclipse.collections.impl.lazy.primitive.SelectDoubleIterable;
import org.eclipse.collections.impl.lazy.primitive.TapDoubleIterable;

LazyDoubleIterate is a factory class which creates "deferred" double iterables around the specified double iterables. A "deferred"
double iterable performs some operation, such as filtering or transforming, when the result double iterable is iterated over.  This
makes the operation very memory efficient, because you don't have to create intermediate collections during the
operation.
This file was automatically generated from template file lazyPrimitiveIterate.stg.
Since:
5.0/**
 * LazyDoubleIterate is a factory class which creates "deferred" double iterables around the specified double iterables. A "deferred"
 * double iterable performs some operation, such as filtering or transforming, when the result double iterable is iterated over.  This
 * makes the operation very memory efficient, because you don't have to create intermediate collections during the
 * operation.
 * This file was automatically generated from template file lazyPrimitiveIterate.stg.
 *
 * @since 5.0
 */
public final class LazyDoubleIterate
{
    private static final LazyDoubleIterable EMPTY_ITERABLE = DoubleLists.immutable.empty().asLazy();

    private LazyDoubleIterate()
    {
        throw new AssertionError("Suppress default constructor for noninstantiability");
    }

    
Creates a deferred double iterable for the specified double iterable.
/**
     * Creates a deferred double iterable for the specified double iterable.
     */
    public static LazyDoubleIterable adapt(DoubleIterable iterable)
    {
        return new LazyDoubleIterableAdapter(iterable);
    }

    
Creates a deferred filtering double iterable for the specified double iterable.
/**
     * Creates a deferred filtering double iterable for the specified double iterable.
     */
    public static LazyDoubleIterable select(DoubleIterable iterable, DoublePredicate predicate)
    {
        return new SelectDoubleIterable(iterable, predicate);
    }

    
Creates a deferred transforming double iterable for the specified double iterable.
/**
     * Creates a deferred transforming double iterable for the specified double iterable.
     */
    public static <V> LazyIterable<V> collect(
            DoubleIterable iterable,
            DoubleToObjectFunction<? extends V> function)
    {
        return new CollectDoubleToObjectIterable<>(iterable, function);
    }

    
Creates a deferred transforming and flattening double iterable for the specified double iterable.
Since:
9.0/**
     * Creates a deferred transforming and flattening double iterable for the specified double iterable.
     *
     * @since 9.0
     */
    public static <V> LazyIterable<V> flatCollect(
            DoubleIterable iterable,
            DoubleToObjectFunction<? extends Iterable<V>> function)
    {
        return new FlatCollectDoubleToObjectIterable<>(iterable, function);
    }

    
Creates a deferred filtering and transforming double iterable for the specified double iterable.
/**
     * Creates a deferred filtering and transforming double iterable for the specified double iterable.
     */
    public static <V> LazyIterable<V> collectIf(
            DoubleIterable iterable,
            DoublePredicate predicate,
            DoubleToObjectFunction<? extends V> function)
    {
        return LazyDoubleIterate.select(iterable, predicate).collect(function);
    }

    public static LazyDoubleIterable empty()
    {
        return EMPTY_ITERABLE;
    }

    
Creates a deferred tap iterable for the specified iterable.
Since:
9.0/**
     * Creates a deferred tap iterable for the specified iterable.
     *
     * @since 9.0
     */
    public static LazyDoubleIterable tap(DoubleIterable iterable, DoubleProcedure procedure)
    {
        return new TapDoubleIterable(iterable, procedure);
    }
}