1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.openjdk.asmtools.jasm; 24 25 import org.openjdk.asmtools.jasm.TypeAnnotationTypes.TypePathEntry; 26 27 import java.io.IOException; 28 import java.io.PrintWriter; 29 import java.util.ArrayList; 30 31 /** 32 * JVMS 4.7.20.2. The type_path structure 33 * 34 * type_path { 35 * u1 path_length; 36 * { u1 type_path_kind; 37 * u1 type_argument_index; 38 * } path[path_length]; 39 * } 40 */ 41 public class TypeAnnotationTypePathData implements Data { 42 43 private ArrayList<TypePathEntry> typePathEntries = new ArrayList<>(); 44 45 public void addTypePathEntry( TypePathEntry entry) { 46 typePathEntries.add(entry); 47 } 48 49 @Override 50 public void write(CheckedDataOutputStream out) throws IOException { 51 out.writeByte(typePathEntries.size()); 52 for (TypePathEntry entry : typePathEntries) { 53 out.writeByte(entry.getTypePathKind()); 54 out.writeByte(entry.getTypeArgumentIndex()); 55 } 56 } 57 58 @Override 59 public int getLength() { 60 return 1 + typePathEntries.size() * 2; 61 } 62 63 public String toString(int tabLevel) { 64 String buffer = ""; 65 if( typePathEntries.size() > 0 ) { 66 StringBuilder sb = new StringBuilder(tabString(tabLevel)); 67 sb.append(" [ "); 68 boolean first = true; 69 for (TypePathEntry entry : typePathEntries) { 70 if (!first) 71 sb.append(", "); 72 first = false; 73 sb.append(entry.toString()); 74 } 75 sb.append("]"); 76 buffer = sb.toString(); 77 } 78 return buffer; 79 } 80 81 /** 82 * jdis: print the type_path structure 83 */ 84 public void print(PrintWriter out, String tab) { 85 if( typePathEntries.size() > 0 ) { 86 out.print(tab + " {"); 87 boolean first = true; 88 for (TypePathEntry entry : typePathEntries) { 89 if (!first) { 90 out.print(", "); 91 } 92 first = false; 93 out.print(entry.toString()); 94 } 95 out.print(tab + "} "); 96 } 97 } 98 }