org.wildfly.common.iteration.CharArrayIterator Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.wildfly.common.iteration;
import java.util.NoSuchElementException;
/**
*/
final class CharArrayIterator extends CodePointIterator {
private final int len;
private final char[] chars;
private final int offs;
private int idx;
private int offset;
CharArrayIterator(final int len, final char[] chars, final int offs) {
this.len = len;
this.chars = chars;
this.offs = offs;
idx = 0;
offset = 0;
}
public boolean hasNext() {
return idx < len;
}
public boolean hasPrevious() {
return idx > 0;
}
public int next() {
if (! hasNext()) throw new NoSuchElementException();
try {
offset++;
return Character.codePointAt(chars, offs + idx);
} finally {
idx = Character.offsetByCodePoints(chars, offs, len, offs + idx, 1) - offs;
}
}
public int peekNext() throws NoSuchElementException {
if (! hasNext()) throw new NoSuchElementException();
return Character.codePointAt(chars, offs + idx);
}
public int previous() {
if (! hasPrevious()) throw new NoSuchElementException();
idx = Character.offsetByCodePoints(chars, offs, len, offs + idx, - 1) - offs;
offset--;
return Character.codePointAt(chars, offs + idx);
}
public int peekPrevious() throws NoSuchElementException {
if (! hasPrevious()) throw new NoSuchElementException();
return Character.codePointBefore(chars, offs + idx);
}
public long getIndex() {
return offset;
}
}