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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).

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/*
 * 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 Base16EncodingCodePointIterator extends CodePointIterator {
    private ByteIterator iter;
    private final boolean toUpperCase;
    int b;
    boolean lo;

    Base16EncodingCodePointIterator(final ByteIterator iter, final boolean toUpperCase) {
        this.iter = iter;
        this.toUpperCase = toUpperCase;
    }

    public boolean hasNext() {
        return lo || iter.hasNext();
    }

    public boolean hasPrevious() {
        return lo || iter.hasPrevious();
    }

    private int hex(final int i) {
        if (i < 10) {
            return '0' + i;
        } else {
            assert i < 16;
            return (toUpperCase ? 'A' : 'a') + i - 10;
        }
    }

    public int next() throws NoSuchElementException {
        if (! hasNext()) throw new NoSuchElementException();
        if (lo) {
            lo = false;
            return hex(b & 0xf);
        } else {
            b = iter.next();
            lo = true;
            return hex(b >> 4);
        }
    }

    public int peekNext() throws NoSuchElementException {
        if (! hasNext()) throw new NoSuchElementException();
        if (lo) {
            return hex(b & 0xf);
        } else {
            return hex(iter.peekNext() >> 4);
        }
    }

    public int previous() throws NoSuchElementException {
        if (! hasPrevious()) throw new NoSuchElementException();
        if (lo) {
            lo = false;
            iter.previous();
            return hex(b >> 4);
        } else {
            b = iter.peekPrevious();
            lo = true;
            return hex(b & 0xf);
        }
    }

    public int peekPrevious() throws NoSuchElementException {
        if (! hasPrevious()) throw new NoSuchElementException();
        if (lo) {
            return hex(b >> 4);
        } else {
            return hex(iter.peekPrevious() & 0xf);
        }
    }

    public long getIndex() {
        return iter.getIndex() * 2 + (lo ? 1 : 0);
    }
}