/*
    * 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
    *
   *   https://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.unpack200.bytecode;
  
  import java.io.DataOutputStream;
  import java.io.IOException;
  
  /**
   * Line number table
   */
  public class LineNumberTableAttribute extends BCIRenumberedAttribute {
  
      private static CPUTF8 attributeName;
  
      public static void setAttributeName(final CPUTF8 cpUTF8Value) {
          attributeName = cpUTF8Value;
      }
  
      private final int lineNumberTableLength;
      private final int[] startPcs;
      private final int[] lineNumbers;
  
      public LineNumberTableAttribute(final int lineNumberTableLength, final int[] startPcs, final int[] lineNumbers) {
          super(attributeName);
          this.lineNumberTableLength = lineNumberTableLength;
          this.startPcs = startPcs;
          this.lineNumbers = lineNumbers;
      }
  
      @Override
      public boolean equals(final Object obj) {
          return this == obj;
      }
  
      @Override
      protected int getLength() {
          return 2 + 4 * lineNumberTableLength;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#getNestedClassFileEntries()
       */
      @Override
      protected ClassFileEntry[] getNestedClassFileEntries() {
          return new ClassFileEntry[] { getAttributeName() };
      }
  
      @Override
      protected int[] getStartPCs() {
          return startPcs;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.commons.compress.harmony.unpack200.bytecode.ClassFileEntry#toString()
       */
      @Override
      public String toString() {
          return "LineNumberTable: " + lineNumberTableLength + " lines";
      }
  
      @Override
      protected void writeBody(final DataOutputStream dos) throws IOException {
          dos.writeShort(lineNumberTableLength);
          for (int i = 0; i < lineNumberTableLength; i++) {
              dos.writeShort(startPcs[i]);
              dos.writeShort(lineNumbers[i]);
          }
      }
  }