org.osgl.util.FlatMappedRSeq Maven / Gradle / Ivy
package org.osgl.util;
/*-
* #%L
* Java Tool
* %%
* Copyright (C) 2014 - 2017 OSGL (Open Source General Library)
* %%
* 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.
* #L%
*/
import org.osgl.$;
import java.util.Iterator;
/**
* Created with IntelliJ IDEA.
* User: luog
* Date: 9/11/13
* Time: 5:20 PM
* To change this template use File | Settings | File Templates.
*/
class FlatMappedRSeq extends ReversibleSeqBase {
private C.ReversibleSequence data;
private $.F1> mapper;
FlatMappedRSeq(C.ReversibleSequence rseq, $.Function> mapper) {
E.NPE(rseq, mapper);
this.data = rseq;
this.mapper = $.f1(mapper);
}
@Override
public int size() throws UnsupportedOperationException {
return data.size();
}
@Override
public Iterator iterator() {
return Iterators.flatMap(data.iterator(), mapper);
}
@Override
public Iterator reverseIterator() {
return Iterators.flatMap(data.reverseIterator(), mapper);
}
static C.ReversibleSequence
of(C.ReversibleSequence data, $.Function> mapper) {
return new FlatMappedRSeq(data, mapper);
}
}