001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.compress.harmony.unpack200.bytecode; 018 019import java.io.DataOutputStream; 020import java.io.IOException; 021 022/** 023 * Line number table 024 */ 025public class LineNumberTableAttribute extends BCIRenumberedAttribute { 026 027 private final int line_number_table_length; 028 private final int[] start_pcs; 029 private final int[] line_numbers; 030 private static CPUTF8 attributeName; 031 032 public static void setAttributeName(final CPUTF8 cpUTF8Value) { 033 attributeName = cpUTF8Value; 034 } 035 036 public LineNumberTableAttribute(final int line_number_table_length, final int[] start_pcs, 037 final int[] line_numbers) { 038 super(attributeName); 039 this.line_number_table_length = line_number_table_length; 040 this.start_pcs = start_pcs; 041 this.line_numbers = line_numbers; 042 } 043 044 @Override 045 protected int getLength() { 046 return 2 + (4 * line_number_table_length); 047 } 048 049 @Override 050 protected void writeBody(final DataOutputStream dos) throws IOException { 051 dos.writeShort(line_number_table_length); 052 for (int i = 0; i < line_number_table_length; i++) { 053 dos.writeShort(start_pcs[i]); 054 dos.writeShort(line_numbers[i]); 055 } 056 } 057 058 /* 059 * (non-Javadoc) 060 * 061 * @see org.apache.commons.compress.harmony.unpack200.bytecode.ClassFileEntry#toString() 062 */ 063 @Override 064 public String toString() { 065 return "LineNumberTable: " + line_number_table_length + " lines"; 066 } 067 068 /* 069 * (non-Javadoc) 070 * 071 * @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#getNestedClassFileEntries() 072 */ 073 @Override 074 protected ClassFileEntry[] getNestedClassFileEntries() { 075 return new ClassFileEntry[] {getAttributeName()}; 076 } 077 078 @Override 079 public boolean equals(final Object obj) { 080 return this == obj; 081 } 082 083 /* 084 * (non-Javadoc) 085 * 086 * @see 087 * org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#resolve(org.apache.commons.compress.harmony. 088 * unpack200.bytecode.ClassConstantPool) 089 */ 090 @Override 091 protected void resolve(final ClassConstantPool pool) { 092 super.resolve(pool); 093 } 094 095 @Override 096 protected int[] getStartPCs() { 097 return start_pcs; 098 } 099}