| /* |
| * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| |
| package com.sun.tools.example.debug.tty; |
| |
| import com.sun.jdi.*; |
| import com.sun.jdi.request.ClassPrepareRequest; |
| import java.util.StringTokenizer; |
| |
| |
| class PatternReferenceTypeSpec implements ReferenceTypeSpec { |
| final String classId; |
| String stem; |
| |
| PatternReferenceTypeSpec(String classId) throws ClassNotFoundException { |
| this.classId = classId; |
| stem = classId; |
| if (classId.startsWith("*")) { |
| stem = stem.substring(1); |
| } else if (classId.endsWith("*")) { |
| stem = stem.substring(0, classId.length() - 1); |
| } |
| checkClassName(stem); |
| } |
| |
| /** |
| * Is this spec unique or is it a class pattern? |
| */ |
| public boolean isUnique() { |
| return classId.equals(stem); |
| } |
| |
| /** |
| * Does the specified ReferenceType match this spec. |
| */ |
| @Override |
| public boolean matches(ReferenceType refType) { |
| if (classId.startsWith("*")) { |
| return refType.name().endsWith(stem); |
| } else if (classId.endsWith("*")) { |
| return refType.name().startsWith(stem); |
| } else { |
| return refType.name().equals(classId); |
| } |
| } |
| |
| @Override |
| public ClassPrepareRequest createPrepareRequest() { |
| ClassPrepareRequest request = |
| Env.vm().eventRequestManager().createClassPrepareRequest(); |
| request.addClassFilter(classId); |
| request.addCountFilter(1); |
| return request; |
| } |
| |
| @Override |
| public int hashCode() { |
| return classId.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof PatternReferenceTypeSpec) { |
| PatternReferenceTypeSpec spec = (PatternReferenceTypeSpec)obj; |
| |
| return classId.equals(spec.classId); |
| } else { |
| return false; |
| } |
| } |
| |
| private void checkClassName(String className) throws ClassNotFoundException { |
| // Do stricter checking of class name validity on deferred |
| // because if the name is invalid, it will |
| // never match a future loaded class, and we'll be silent |
| // about it. |
| StringTokenizer tokenizer = new StringTokenizer(className, "."); |
| while (tokenizer.hasMoreTokens()) { |
| String token = tokenizer.nextToken(); |
| // Each dot-separated piece must be a valid identifier |
| // and the first token can also be "*". (Note that |
| // numeric class ids are not permitted. They must |
| // match a loaded class.) |
| if (!isJavaIdentifier(token)) { |
| throw new ClassNotFoundException(); |
| } |
| } |
| } |
| |
| private boolean isJavaIdentifier(String s) { |
| if (s.length() == 0) { |
| return false; |
| } |
| |
| int cp = s.codePointAt(0); |
| if (! Character.isJavaIdentifierStart(cp)) { |
| return false; |
| } |
| |
| for (int i = Character.charCount(cp); i < s.length(); i += Character.charCount(cp)) { |
| cp = s.codePointAt(i); |
| if (! Character.isJavaIdentifierPart(cp)) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return classId; |
| } |
| } |