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FromArray.java
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54 lines (47 loc) · 1.47 KB
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/*
* Copyright (c) 2020, Fernando Miguel Carvalho, mcarvalho@cc.isel.ipl.pt
*
* 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 org.jayield.ops;
import org.jayield.Advancer;
import org.jayield.Traverser;
import org.jayield.Yield;
public class FromArray<U> implements Advancer<U>, Traverser<U> {
private final U[] data;
private int current;
public FromArray(U... data) {
this.data = data;
this.current = 0;
}
public boolean hasNext() {
return current < data.length;
}
/**
* Continues from the point where tryAdvance or next left the
* internal iteration.
* @param yield
*/
@Override
public void traverse(Yield<? super U> yield) {
for (int i = current; i < data.length; i++) {
yield.ret(data[i]);
}
}
@Override
public boolean tryAdvance(Yield<? super U> yield) {
if(!hasNext()) return false;
yield.ret(data[current++]);
return true;
}
}