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   * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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   */
  
  package openjdk.tools.jdeprscan.scan;
  
  import openjdk.tools.classfile.ConstantPool;
  import openjdk.tools.classfile.ConstantPool.CONSTANT_Dynamic_info;
  
  /**
   * A visitor that selects constant pool entries by type and adds
   * them to the given CPEntries object.
   */
  class CPSelector implements ConstantPool.Visitor<Void,CPEntries> {
      @Override
      public Void visitClass(ConstantPool.CONSTANT_Class_info info, CPEntries p) {
          p.classes.add(info);
          return null;
      }
  
      @Override
      public Void visitDouble(ConstantPool.CONSTANT_Double_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitFieldref(ConstantPool.CONSTANT_Fieldref_info info, CPEntries p) {
          p.fieldRefs.add(info);
          return null;
      }
  
      @Override
      public Void visitFloat(ConstantPool.CONSTANT_Float_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitInteger(ConstantPool.CONSTANT_Integer_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitInterfaceMethodref(ConstantPool.CONSTANT_InterfaceMethodref_info info, CPEntries p) {
          p.intfMethodRefs.add(info);
          return null;
      }
  
      @Override
      public Void visitInvokeDynamic(ConstantPool.CONSTANT_InvokeDynamic_info info, CPEntries p) {
          return null;
      }
  
      public Void visitDynamicConstant(CONSTANT_Dynamic_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitLong(ConstantPool.CONSTANT_Long_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitMethodref(ConstantPool.CONSTANT_Methodref_info info, CPEntries p) {
          p.methodRefs.add(info);
          return null;
      }
  
      @Override
      public Void visitMethodHandle(ConstantPool.CONSTANT_MethodHandle_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitMethodType(ConstantPool.CONSTANT_MethodType_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitModule(ConstantPool.CONSTANT_Module_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitNameAndType(ConstantPool.CONSTANT_NameAndType_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitPackage(ConstantPool.CONSTANT_Package_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitString(ConstantPool.CONSTANT_String_info info, CPEntries p) {
          return null;
      }
  
      @Override
      public Void visitUtf8(ConstantPool.CONSTANT_Utf8_info info, CPEntries p) {
          return null;
      }
  }
  