org.wildfly.discovery.StringIterator 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 2014 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.discovery;
import java.util.NoSuchElementException;
/**
* @author David M. Lloyd
*/
final class StringIterator {
private final String string;
private int idx;
StringIterator(final String string) {
this.string = string;
}
boolean hasNext() {
return idx < string.length();
}
int next() {
if (! hasNext()) throw unexpectedEnd();
try {
return string.codePointAt(idx);
} finally {
idx = string.offsetByCodePoints(idx, 1);
}
}
int peek() {
if (! hasNext()) throw new NoSuchElementException();
return string.codePointAt(idx);
}
int getOffset() {
return idx;
}
IllegalArgumentException unexpectedCharacter() {
return new IllegalArgumentException("Unexpected character at " + string.offsetByCodePoints(idx, -1));
}
IllegalArgumentException unexpectedEnd() {
return new IllegalArgumentException("Unexpected end of string");
}
}