| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 com.sun.org.apache.bcel.internal.classfile; |
| |
| import java.io.DataInput; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| import com.sun.org.apache.bcel.internal.Const; |
| |
| /** |
| * This class is derived from the abstract {@link Constant} |
| * and represents a reference to the name and signature |
| * of a field or method. |
| * |
| * @version $Id: ConstantNameAndType.java 1747278 2016-06-07 17:28:43Z britter $ |
| * @see Constant |
| */ |
| public final class ConstantNameAndType extends Constant { |
| |
| private int name_index; // Name of field/method |
| private int signature_index; // and its signature. |
| |
| |
| /** |
| * Initialize from another object. |
| */ |
| public ConstantNameAndType(final ConstantNameAndType c) { |
| this(c.getNameIndex(), c.getSignatureIndex()); |
| } |
| |
| |
| /** |
| * Initialize instance from file data. |
| * |
| * @param file Input stream |
| * @throws IOException |
| */ |
| ConstantNameAndType(final DataInput file) throws IOException { |
| this(file.readUnsignedShort(), file.readUnsignedShort()); |
| } |
| |
| |
| /** |
| * @param name_index Name of field/method |
| * @param signature_index and its signature |
| */ |
| public ConstantNameAndType(final int name_index, final int signature_index) { |
| super(Const.CONSTANT_NameAndType); |
| this.name_index = name_index; |
| this.signature_index = signature_index; |
| } |
| |
| |
| /** |
| * Called by objects that are traversing the nodes of the tree implicitely |
| * defined by the contents of a Java class. I.e., the hierarchy of methods, |
| * fields, attributes, etc. spawns a tree of objects. |
| * |
| * @param v Visitor object |
| */ |
| @Override |
| public void accept( final Visitor v ) { |
| v.visitConstantNameAndType(this); |
| } |
| |
| |
| /** |
| * Dump name and signature index to file stream in binary format. |
| * |
| * @param file Output file stream |
| * @throws IOException |
| */ |
| @Override |
| public final void dump( final DataOutputStream file ) throws IOException { |
| file.writeByte(super.getTag()); |
| file.writeShort(name_index); |
| file.writeShort(signature_index); |
| } |
| |
| |
| /** |
| * @return Name index in constant pool of field/method name. |
| */ |
| public final int getNameIndex() { |
| return name_index; |
| } |
| |
| |
| /** @return name |
| */ |
| public final String getName( final ConstantPool cp ) { |
| return cp.constantToString(getNameIndex(), Const.CONSTANT_Utf8); |
| } |
| |
| |
| /** |
| * @return Index in constant pool of field/method signature. |
| */ |
| public final int getSignatureIndex() { |
| return signature_index; |
| } |
| |
| |
| /** @return signature |
| */ |
| public final String getSignature( final ConstantPool cp ) { |
| return cp.constantToString(getSignatureIndex(), Const.CONSTANT_Utf8); |
| } |
| |
| |
| /** |
| * @param name_index the name index of this constant |
| */ |
| public final void setNameIndex( final int name_index ) { |
| this.name_index = name_index; |
| } |
| |
| |
| /** |
| * @param signature_index the signature index in the constant pool of this type |
| */ |
| public final void setSignatureIndex( final int signature_index ) { |
| this.signature_index = signature_index; |
| } |
| |
| |
| /** |
| * @return String representation |
| */ |
| @Override |
| public final String toString() { |
| return super.toString() + "(name_index = " + name_index + ", signature_index = " |
| + signature_index + ")"; |
| } |
| } |