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  * @since 6.0
  34  */
  35 public abstract class NameSignatureInstruction extends CPInstruction {
  36 
  37     public NameSignatureInstruction() {
  38         super();
  39     }
  40 
  41     public NameSignatureInstruction(final short opcode, final int index) {
  42         super(opcode, index);
  43     }
  44 
  45     public ConstantNameAndType getNameAndType(final ConstantPoolGen cpg) {
  46         final ConstantPool cp = cpg.getConstantPool();
  47         final ConstantCP cmr = (ConstantCP) cp.getConstant(super.getIndex());
  48         return  (ConstantNameAndType) cp.getConstant(cmr.getNameAndTypeIndex());
  49     }
  50     /** @return signature of referenced method/field.
  51      */
  52     public String getSignature(final ConstantPoolGen cpg) {
  53         final ConstantPool cp = cpg.getConstantPool();
  54         final ConstantNameAndType cnat = getNameAndType(cpg);
  55         return ((ConstantUtf8) cp.getConstant(cnat.getSignatureIndex())).getBytes();
  56     }
  57 
  58     /** @return name of referenced method/field.
  59      */
  60     public String getName(final ConstantPoolGen cpg) {
  61         final ConstantPool cp = cpg.getConstantPool();
  62         final ConstantNameAndType cnat = getNameAndType(cpg);
  63         return ((ConstantUtf8) cp.getConstant(cnat.getNameIndex())).getBytes();
  64     }
  65 
  66 }