/*
    *  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 org.apache.commons.compress.harmony.pack200;
  
  import java.util.List;
  
  /**
   * Constant pool entry for a signature.
   */
  public class CPSignature extends ConstantPoolEntry implements Comparable {
  
      private final CPUTF8 signatureForm;
      private final List<CPClass> classes;
      private final String signature;
      private final boolean formStartsWithBracket;
  
      public CPSignature(final String signature, final CPUTF8 signatureForm, final List<CPClass> classes) {
          this.signature = signature;
          this.signatureForm = signatureForm;
          this.classes = classes;
          formStartsWithBracket = signatureForm.toString().startsWith("(");
      }
  
      @Override
      public int compareTo(final Object arg0) {
          if (signature.equals(((CPSignature) arg0).signature)) {
              return 0;
          }
          if (formStartsWithBracket && !((CPSignature) arg0).formStartsWithBracket) {
              return 1;
          }
          if (((CPSignature) arg0).formStartsWithBracket && !formStartsWithBracket) {
              return -1;
          }
          if (classes.size() - ((CPSignature) arg0).classes.size() != 0) {
              return classes.size() - ((CPSignature) arg0).classes.size();
          }
          if (classes.size() > 0) {
              for (int i = classes.size() - 1; i >= 0; i--) {
                  final CPClass cpClass = classes.get(i);
                  final CPClass compareClass = ((CPSignature) arg0).classes.get(i);
                  final int classComp = cpClass.compareTo(compareClass);
                  if (classComp != 0) {
                      return classComp;
                  }
              }
          }
          return signature.compareTo(((CPSignature) arg0).signature);
      }
  
      public List<CPClass> getClasses() {
          return classes;
      }
  
      public int getIndexInCpUtf8() {
          return signatureForm.getIndex();
      }
  
      public CPUTF8 getSignatureForm() {
          return signatureForm;
      }
  
      public String getUnderlyingString() {
          return signature;
      }
  
      @Override
      public String toString() {
          return signature;
      }
  }