184 lines
7.4 KiB
Java
184 lines
7.4 KiB
Java
/*
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* Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package build.tools.jdwpgen;
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import java.util.*;
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import java.io.*;
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import java.lang.reflect.InvocationTargetException;
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class Parse {
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final StreamTokenizer izer;
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final Map<String, Node> kindMap = new HashMap<String, Node>();
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Parse(Reader reader) {
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izer = new StreamTokenizer(new BufferedReader(reader));
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izer.resetSyntax();
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izer.slashStarComments(true);
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izer.slashSlashComments(true);
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izer.wordChars((int)'a', (int)'z');
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izer.wordChars((int)'A', (int)'Z');
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izer.wordChars((int)'0', (int)'9');
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izer.wordChars((int)'_', (int)'_');
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izer.wordChars((int)'-', (int)'-');
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izer.wordChars((int)'.', (int)'.');
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izer.whitespaceChars(0, 32);
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izer.quoteChar('"');
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izer.quoteChar('\'');
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kindMap.put("CommandSet", new CommandSetNode());
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kindMap.put("Command", new CommandNode());
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kindMap.put("Out", new OutNode());
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kindMap.put("Reply", new ReplyNode());
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kindMap.put("ErrorSet", new ErrorSetNode());
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kindMap.put("Error", new ErrorNode());
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kindMap.put("Event", new EventNode());
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kindMap.put("Repeat", new RepeatNode());
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kindMap.put("Group", new GroupNode());
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kindMap.put("Select", new SelectNode());
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kindMap.put("Alt", new AltNode());
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kindMap.put("ConstantSet", new ConstantSetNode());
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kindMap.put("Constant", new ConstantNode());
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kindMap.put("int", new IntTypeNode());
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kindMap.put("long", new LongTypeNode());
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kindMap.put("boolean", new BooleanTypeNode());
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kindMap.put("object", new ObjectTypeNode());
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kindMap.put("threadObject", new ThreadObjectTypeNode());
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kindMap.put("threadGroupObject", new ThreadGroupObjectTypeNode());
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kindMap.put("arrayObject", new ArrayObjectTypeNode());
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kindMap.put("stringObject", new StringObjectTypeNode());
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kindMap.put("classLoaderObject", new ClassLoaderObjectTypeNode());
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kindMap.put("classObject", new ClassObjectTypeNode());
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kindMap.put("referenceType", new ReferenceTypeNode());
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kindMap.put("referenceTypeID", new ReferenceIDTypeNode());
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kindMap.put("classType", new ClassTypeNode());
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kindMap.put("interfaceType", new InterfaceTypeNode());
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kindMap.put("arrayType", new ArrayTypeNode());
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kindMap.put("method", new MethodTypeNode());
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kindMap.put("field", new FieldTypeNode());
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kindMap.put("frame", new FrameTypeNode());
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kindMap.put("string", new StringTypeNode());
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kindMap.put("moduleID", new ModuleTypeNode());
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kindMap.put("value", new ValueTypeNode());
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kindMap.put("byte", new ByteTypeNode());
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kindMap.put("location", new LocationTypeNode());
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kindMap.put("tagged-object", new TaggedObjectTypeNode());
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kindMap.put("referenceTypeID", new ReferenceIDTypeNode());
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kindMap.put("typed-sequence", new ArrayRegionTypeNode());
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kindMap.put("untagged-value", new UntaggedValueTypeNode());
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}
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RootNode items() throws IOException {
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List<Node> list = new ArrayList<Node>();
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while (izer.nextToken() != StreamTokenizer.TT_EOF) {
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izer.pushBack();
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list.add(item());
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}
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RootNode node = new RootNode();
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node.set("Root", list, 1);
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return node;
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}
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Node item() throws IOException {
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switch (izer.nextToken()) {
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case StreamTokenizer.TT_EOF:
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error("Unexpected end-of-file");
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return null;
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case StreamTokenizer.TT_WORD: {
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String name = izer.sval;
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if (izer.nextToken() == '=') {
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int ntok = izer.nextToken();
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if (ntok == StreamTokenizer.TT_WORD) {
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return new NameValueNode(name, izer.sval);
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} else if (ntok == '\'') {
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return new NameValueNode(name, izer.sval.charAt(0));
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} else {
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error("Expected value after: " + name + " =");
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return null;
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}
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} else {
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izer.pushBack();
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return new NameNode(name);
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}
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}
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case '"':
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return new CommentNode(izer.sval);
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case '(': {
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if (izer.nextToken() == StreamTokenizer.TT_WORD) {
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String kind = izer.sval;
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List<Node> list = new ArrayList<Node>();
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while (izer.nextToken() != ')') {
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izer.pushBack();
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list.add(item());
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}
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Node proto = kindMap.get(kind);
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if (proto == null) {
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error("Invalid kind: " + kind);
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return null;
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} else {
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try {
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Node node = (Node)proto.getClass().getDeclaredConstructor().newInstance();
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node.set(kind, list, izer.lineno());
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return node;
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} catch (InstantiationException exc) {
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error(exc.toString());
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return null;
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} catch (NoSuchMethodException exc) {
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error(exc.toString());
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return null;
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} catch (InvocationTargetException exc) {
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error(exc.toString());
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return null;
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} catch (IllegalAccessException exc) {
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error(exc.toString());
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return null;
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}
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}
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} else {
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error("Expected kind identifier, got " + izer.ttype +
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" : " + izer.sval);
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return null;
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}
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}
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default:
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error("Unexpected character: '" + (char)izer.ttype + "'");
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return null;
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}
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}
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void error(String errmsg) {
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System.err.println(Main.specSource + ":" + izer.lineno() +
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": " + errmsg);
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throw new RuntimeException("Error: " + errmsg);
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}
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}
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