1 /* 2 * Javassist, a Java-bytecode translator toolkit. 3 * Copyright (C) 1999-2007 Shigeru Chiba. All Rights Reserved. 4 * 5 * The contents of this file are subject to the Mozilla Public License Version 6 * 1.1 (the "License"); you may not use this file except in compliance with 7 * the License. Alternatively, the contents of this file may be used under 8 * the terms of the GNU Lesser General Public License Version 2.1 or later. 9 * 10 * Software distributed under the License is distributed on an "AS IS" basis, 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12 * for the specific language governing rights and limitations under the 13 * License. 14 */ 15 16 package javassist.bytecode; 17 18 import java.io.DataInputStream; 19 import java.io.IOException; 20 import java.util.Map; 21 22 /** 23 * <code>SourceFile_attribute</code>. 24 */ 25 public class SourceFileAttribute extends AttributeInfo { 26 /** 27 * The name of this attribute <code>"SourceFile"</code>. 28 */ 29 public static final String tag = "SourceFile"; 30 SourceFileAttribute(ConstPool cp, int n, DataInputStream in)31 SourceFileAttribute(ConstPool cp, int n, DataInputStream in) 32 throws IOException 33 { 34 super(cp, n, in); 35 } 36 37 /** 38 * Constructs a SourceFile attribute. 39 * 40 * @param cp a constant pool table. 41 * @param filename the name of the source file. 42 */ SourceFileAttribute(ConstPool cp, String filename)43 public SourceFileAttribute(ConstPool cp, String filename) { 44 super(cp, tag); 45 int index = cp.addUtf8Info(filename); 46 byte[] bvalue = new byte[2]; 47 bvalue[0] = (byte)(index >>> 8); 48 bvalue[1] = (byte)index; 49 set(bvalue); 50 } 51 52 /** 53 * Returns the file name indicated by <code>sourcefile_index</code>. 54 */ getFileName()55 public String getFileName() { 56 return getConstPool().getUtf8Info(ByteArray.readU16bit(get(), 0)); 57 } 58 59 /** 60 * Makes a copy. Class names are replaced according to the 61 * given <code>Map</code> object. 62 * 63 * @param newCp the constant pool table used by the new copy. 64 * @param classnames pairs of replaced and substituted 65 * class names. 66 */ copy(ConstPool newCp, Map classnames)67 public AttributeInfo copy(ConstPool newCp, Map classnames) { 68 return new SourceFileAttribute(newCp, getFileName()); 69 } 70 } 71