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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 StringIterator extends CodePointIterator {
    private final int len;
    private final String string;
    private final int offs;
    private int idx;
    private long offset;

    StringIterator(final int len, final String string, final int offs) {
        this.len = len;
        this.string = string;
        this.offs = offs;
        idx = 0;
        offset = 0;
    }

    public boolean hasNext() {
        return idx < len;
    }

    public boolean hasPrevious() {
        return offset > 0;
    }

    public int next() {
        if (! hasNext()) throw new NoSuchElementException();
        try {
            offset++;
            return string.codePointAt(idx + offs);
        } finally {
            idx = string.offsetByCodePoints(idx + offs, 1) - offs;
        }
    }

    public int peekNext() throws NoSuchElementException {
        if (! hasNext()) throw new NoSuchElementException();
        return string.codePointAt(idx + offs);
    }

    public int previous() {
        if (! hasPrevious()) throw new NoSuchElementException();
        idx = string.offsetByCodePoints(idx + offs, - 1) - offs;
        offset--;
        return string.codePointAt(idx + offs);
    }

    public int peekPrevious() throws NoSuchElementException {
        if (! hasPrevious()) throw new NoSuchElementException();
        return string.codePointBefore(idx + offs);
    }

    public long getIndex() {
        return offset;
    }

    public StringBuilder drainTo(final StringBuilder b) {
        try {
            return b.append(string, idx + offs, offs + len);
        } finally {
            offset += string.codePointCount(idx + offs, offs + len);
            idx = len;
        }
    }

    public String drainToString() {
        try {
            return string.substring(idx + offs, offs + len);
        } finally {
            offset += string.codePointCount(idx + offs, offs + len);
            idx = len;
        }
    }
}