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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2018-2023 Saxonica Limited
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
package net.sf.saxon.tree.jiter;
import java.util.Iterator;
/**
* A Java Iterable which applies a mapping function to each item in a supplied Iterable
* @param the type of the input items
* @param the type of the delivered item
*/
public class MappingJavaIterable implements Iterable {
private final Iterable input;
private final java.util.function.Function mapper;
/**
* Create a mapping iterable
* @param in the input sequence
* @param mapper the mapping function to be applied to each item in the input sequence to
* generate the corresponding item in the result sequence. If the mapping
* function returns null for a particular input, the item is omitted from the
* result sequence.
*/
public MappingJavaIterable(Iterable in, java.util.function.Function mapper) {
this.input = in;
this.mapper = mapper;
}
/**
* Returns an iterator over elements of type {@code T}.
*
* @return an Iterator.
*/
@Override
public Iterator iterator() {
return new MappingJavaIterator(input.iterator(), mapper);
}
}