CPUTF8.java
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.apache.commons.compress.harmony.unpack200.bytecode;
- import java.io.DataOutputStream;
- import java.io.IOException;
- import java.nio.charset.StandardCharsets;
- import java.util.Objects;
- /**
- * UTF8 constant pool entry, used for storing long Strings.
- */
- public class CPUTF8 extends ConstantPoolEntry {
- private final String utf8;
- private boolean hashCodeComputed;
- private int cachedHashCode;
- public CPUTF8(final String string) {
- this(string, -1);
- }
- /**
- * Creates a new CPUTF8 instance
- *
- * @param utf8 TODO
- * @param globalIndex index in CpBands
- * @throws NullPointerException if utf8 is null
- */
- public CPUTF8(final String utf8, final int globalIndex) {
- super(CP_UTF8, globalIndex);
- this.utf8 = Objects.requireNonNull(utf8, "utf8");
- }
- @Override
- public boolean equals(final Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj == null) {
- return false;
- }
- if (this.getClass() != obj.getClass()) {
- return false;
- }
- final CPUTF8 other = (CPUTF8) obj;
- return utf8.equals(other.utf8);
- }
- private void generateHashCode() {
- hashCodeComputed = true;
- final int PRIME = 31;
- cachedHashCode = PRIME + utf8.hashCode();
- }
- @Override
- public int hashCode() {
- if (!hashCodeComputed) {
- generateHashCode();
- }
- return cachedHashCode;
- }
- public void setGlobalIndex(final int index) {
- globalIndex = index;
- }
- @Override
- public String toString() {
- return StandardCharsets.UTF_8.name() + ":" + utf8;
- }
- public String underlyingString() {
- return utf8;
- }
- @Override
- protected void writeBody(final DataOutputStream dos) throws IOException {
- dos.writeUTF(utf8);
- }
- }