1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Licensed to the Apache Software Foundation (ASF) under one or more
   7  * contributor license agreements.  See the NOTICE file distributed with
   8  * this work for additional information regarding copyright ownership.
   9  * The ASF licenses this file to You under the Apache License, Version 2.0
  10  * (the "License"); you may not use this file except in compliance with
  11  * the License.  You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  */
  21 
  22 package com.sun.org.apache.bcel.internal.generic;
  23 
  24 import com.sun.org.apache.bcel.internal.classfile.ConstantCP;
  25 import com.sun.org.apache.bcel.internal.classfile.ConstantNameAndType;
  26 import com.sun.org.apache.bcel.internal.classfile.ConstantPool;
  27 import com.sun.org.apache.bcel.internal.classfile.ConstantUtf8;
  28 
  29 /**
  30  * Super class for FieldOrMethod and INVOKEDYNAMIC, since they both have
  31  * names and signatures
  32  *
  33  * @version $Id: FieldOrMethod.java 1481383 2013-05-11 17:34:32Z dbrosius $
  34  * @since 6.0
  35  */
  36 public abstract class NameSignatureInstruction extends CPInstruction {
  37 
  38     public NameSignatureInstruction() {
  39         super();
  40     }
  41 
  42     public NameSignatureInstruction(final short opcode, final int index) {
  43         super(opcode, index);
  44     }
  45 
  46     public ConstantNameAndType getNameAndType(final ConstantPoolGen cpg) {
  47         final ConstantPool cp = cpg.getConstantPool();
  48         final ConstantCP cmr = (ConstantCP) cp.getConstant(super.getIndex());
  49         return  (ConstantNameAndType) cp.getConstant(cmr.getNameAndTypeIndex());
  50     }
  51     /** @return signature of referenced method/field.
  52      */
  53     public String getSignature(final ConstantPoolGen cpg) {
  54         final ConstantPool cp = cpg.getConstantPool();
  55         final ConstantNameAndType cnat = getNameAndType(cpg);
  56         return ((ConstantUtf8) cp.getConstant(cnat.getSignatureIndex())).getBytes();
  57     }
  58 
  59     /** @return name of referenced method/field.
  60      */
  61     public String getName(final ConstantPoolGen cpg) {
  62         final ConstantPool cp = cpg.getConstantPool();
  63         final ConstantNameAndType cnat = getNameAndType(cpg);
  64         return ((ConstantUtf8) cp.getConstant(cnat.getNameIndex())).getBytes();
  65     }
  66 
  67 }