1 /* 2 * Copyright (c) 1998, 2013, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package build.tools.jdwpgen; 27 28 import java.util.*; 29 import java.io.*; 30 31 class Parse { 32 33 final StreamTokenizer izer; 34 final Map<String, Node> kindMap = new HashMap<String, Node>(); 35 36 Parse(Reader reader) { 37 izer = new StreamTokenizer(new BufferedReader(reader)); 38 izer.resetSyntax(); 39 izer.slashStarComments(true); 40 izer.slashSlashComments(true); 41 izer.wordChars((int)'a', (int)'z'); 42 izer.wordChars((int)'A', (int)'Z'); 43 izer.wordChars((int)'0', (int)'9'); 44 izer.wordChars((int)'_', (int)'_'); 45 izer.wordChars((int)'-', (int)'-'); 46 izer.wordChars((int)'.', (int)'.'); 47 izer.whitespaceChars(0, 32); 48 izer.quoteChar('"'); 49 izer.quoteChar('\''); 50 51 kindMap.put("CommandSet", new CommandSetNode()); 52 kindMap.put("Command", new CommandNode()); 53 kindMap.put("Out", new OutNode()); 54 kindMap.put("Reply", new ReplyNode()); 55 kindMap.put("ErrorSet", new ErrorSetNode()); 56 kindMap.put("Error", new ErrorNode()); 57 kindMap.put("Event", new EventNode()); 58 kindMap.put("Repeat", new RepeatNode()); 59 kindMap.put("Group", new GroupNode()); 60 kindMap.put("Select", new SelectNode()); 61 kindMap.put("Alt", new AltNode()); 62 kindMap.put("ConstantSet", new ConstantSetNode()); 63 kindMap.put("Constant", new ConstantNode()); 64 kindMap.put("int", new IntTypeNode()); 65 kindMap.put("long", new LongTypeNode()); 66 kindMap.put("boolean", new BooleanTypeNode()); 67 kindMap.put("object", new ObjectTypeNode()); 68 kindMap.put("threadObject", new ThreadObjectTypeNode()); 69 kindMap.put("threadGroupObject", new ThreadGroupObjectTypeNode()); 70 kindMap.put("arrayObject", new ArrayObjectTypeNode()); 71 kindMap.put("stringObject", new StringObjectTypeNode()); 72 kindMap.put("classLoaderObject", new ClassLoaderObjectTypeNode()); 73 kindMap.put("classObject", new ClassObjectTypeNode()); 74 kindMap.put("referenceType", new ReferenceTypeNode()); 75 kindMap.put("referenceTypeID", new ReferenceIDTypeNode()); 76 kindMap.put("classType", new ClassTypeNode()); 77 kindMap.put("interfaceType", new InterfaceTypeNode()); 78 kindMap.put("arrayType", new ArrayTypeNode()); 79 kindMap.put("method", new MethodTypeNode()); 80 kindMap.put("field", new FieldTypeNode()); 81 kindMap.put("frame", new FrameTypeNode()); 82 kindMap.put("string", new StringTypeNode()); 83 kindMap.put("value", new ValueTypeNode()); 84 kindMap.put("byte", new ByteTypeNode()); 85 kindMap.put("location", new LocationTypeNode()); 86 kindMap.put("tagged-object", new TaggedObjectTypeNode()); 87 kindMap.put("referenceTypeID", new ReferenceIDTypeNode()); 88 kindMap.put("typed-sequence", new ArrayRegionTypeNode()); 89 kindMap.put("untagged-value", new UntaggedValueTypeNode()); 90 } 91 92 RootNode items() throws IOException { 93 List<Node> list = new ArrayList<Node>(); 94 95 while (izer.nextToken() != StreamTokenizer.TT_EOF) { 96 izer.pushBack(); 97 list.add(item()); 98 } 99 RootNode node = new RootNode(); 100 node.set("Root", list, 1); 101 return node; 102 } 103 104 Node item() throws IOException { 105 switch (izer.nextToken()) { 106 case StreamTokenizer.TT_EOF: 107 error("Unexpect end-of-file"); 108 return null; 109 110 case StreamTokenizer.TT_WORD: { 111 String name = izer.sval; 112 if (izer.nextToken() == '=') { 113 int ntok = izer.nextToken(); 114 if (ntok == StreamTokenizer.TT_WORD) { 115 return new NameValueNode(name, izer.sval); 116 } else if (ntok == '\'') { 117 return new NameValueNode(name, izer.sval.charAt(0)); 118 } else { 119 error("Expected value after: " + name + " ="); 120 return null; 121 } 122 } else { 123 izer.pushBack(); 124 return new NameNode(name); 125 } 126 } 127 128 case '"': 129 return new CommentNode(izer.sval); 130 131 case '(': { 132 if (izer.nextToken() == StreamTokenizer.TT_WORD) { 133 String kind = izer.sval; 134 List<Node> list = new ArrayList<Node>(); 135 136 while (izer.nextToken() != ')') { 137 izer.pushBack(); 138 list.add(item()); 139 } 140 Node proto = kindMap.get(kind); 141 if (proto == null) { 142 error("Invalid kind: " + kind); 143 return null; 144 } else { 145 try { 146 Node node = (Node)proto.getClass().newInstance(); 147 node.set(kind, list, izer.lineno()); 148 return node; 149 } catch (InstantiationException exc) { 150 error(exc.toString()); 151 return null; 152 } catch (IllegalAccessException exc) { 153 error(exc.toString()); 154 return null; 155 } 156 } 157 } else { 158 error("Expected kind identifier, got " + izer.ttype + 159 " : " + izer.sval); 160 return null; 161 } 162 } 163 164 default: 165 error("Unexpected character: '" + (char)izer.ttype + "'"); 166 return null; 167 } 168 } 169 170 void error(String errmsg) { 171 System.err.println(Main.specSource + ":" + izer.lineno() + 172 ": " + errmsg); 173 throw new RuntimeException("Error: " + errmsg); 174 } 175 } 176
