content: /*
   * 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.
   *
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  package openjdk.tools.jdeprscan.scan;
  
  import java.util.ArrayList;
  import java.util.Formatter;
  import java.util.List;
  import java.util.Locale;
  
  import openjdk.tools.classfile.ClassFile;
  import openjdk.tools.classfile.ConstantPool;
  
  import static openjdk.tools.classfile.ConstantPool.CPInfo;
  
  /**
   * A container for selected constant pool entries. There are currently
   * lists that contain the following types of CP entries:
   *
   *  - CONSTANT_Class_info
   *  - CONSTANT_Fieldref_info
   *  - CONSTANT_Methodref_info
   *  - CONSTANT_InterfaceMethodref_info
   */
  class CPEntries {
      final List<ConstantPool.CONSTANT_Class_info> classes = new ArrayList<>();
      final List<ConstantPool.CONSTANT_Fieldref_info> fieldRefs = new ArrayList<>();
      final List<ConstantPool.CONSTANT_Methodref_info> methodRefs = new ArrayList<>();
      final List<ConstantPool.CONSTANT_InterfaceMethodref_info> intfMethodRefs = new ArrayList<>();
  
      public static CPEntries loadFrom(ClassFile cf) {
          CPEntries entries = new CPEntries();
          for (CPInfo cpi : cf.constant_pool.entries()) {
              cpi.accept(new CPSelector(), entries);
          }
          return entries;
      }
  
      @Override
      public String toString() {
          StringBuilder sb = new StringBuilder();
          Formatter f = new Formatter(sb, Locale.getDefault());
          f.format("Classes:%n");
          f.format("%s%n", classes);
          f.format("FieldRefs:%n");
          f.format("%s%n", fieldRefs);
          f.format("MethodRefs:%n");
          f.format("%s%n", methodRefs);
          f.format("InterfaceMethodRefs:%n");
          f.format("%s%n", intfMethodRefs);
          f.flush();
          return sb.toString();
      }
  }
  