1 /* 2 * Javassist, a Java-bytecode translator toolkit. 3 * Copyright (C) 1999- 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 * or the Apache License Version 2.0. 10 * 11 * Software distributed under the License is distributed on an "AS IS" basis, 12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 13 * for the specific language governing rights and limitations under the 14 * License. 15 */ 16 17 package javassist.bytecode; 18 19 import java.io.DataInputStream; 20 import java.io.IOException; 21 import java.util.Map; 22 23 /** 24 * <code>SourceFile_attribute</code>. 25 */ 26 public class SourceFileAttribute extends AttributeInfo { 27 /** 28 * The name of this attribute <code>"SourceFile"</code>. 29 */ 30 public static final String tag = "SourceFile"; 31 SourceFileAttribute(ConstPool cp, int n, DataInputStream in)32 SourceFileAttribute(ConstPool cp, int n, DataInputStream in) 33 throws IOException 34 { 35 super(cp, n, in); 36 } 37 38 /** 39 * Constructs a SourceFile attribute. 40 * 41 * @param cp a constant pool table. 42 * @param filename the name of the source file. 43 */ SourceFileAttribute(ConstPool cp, String filename)44 public SourceFileAttribute(ConstPool cp, String filename) { 45 super(cp, tag); 46 int index = cp.addUtf8Info(filename); 47 byte[] bvalue = new byte[2]; 48 bvalue[0] = (byte)(index >>> 8); 49 bvalue[1] = (byte)index; 50 set(bvalue); 51 } 52 53 /** 54 * Returns the file name indicated by <code>sourcefile_index</code>. 55 */ getFileName()56 public String getFileName() { 57 return getConstPool().getUtf8Info(ByteArray.readU16bit(get(), 0)); 58 } 59 60 /** 61 * Makes a copy. Class names are replaced according to the 62 * given <code>Map</code> object. 63 * 64 * @param newCp the constant pool table used by the new copy. 65 * @param classnames pairs of replaced and substituted 66 * class names. 67 */ 68 @Override copy(ConstPool newCp, Map<String,String> classnames)69 public AttributeInfo copy(ConstPool newCp, Map<String,String> classnames) { 70 return new SourceFileAttribute(newCp, getFileName()); 71 } 72 } 73