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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2003, 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 com.sun.tools.example.debug.tty; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | import com.sun.jdi.request.ClassPrepareRequest; | ||
| 30 | import java.util.StringTokenizer; | ||
| 31 | |||
| 32 | |||
| 33 | class PatternReferenceTypeSpec implements ReferenceTypeSpec { | ||
| 34 | final String classId; | ||
| 35 | String stem; | ||
| 36 | |||
| 37 | PatternReferenceTypeSpec(String classId) throws ClassNotFoundException { | ||
| 38 | this.classId = classId; | ||
| 39 | stem = classId; | ||
| 40 | if (classId.startsWith("*")) { | ||
| 41 | stem = stem.substring(1); | ||
| 42 | } else if (classId.endsWith("*")) { | ||
| 43 | stem = stem.substring(0, classId.length() - 1); | ||
| 44 | } | ||
| 45 | checkClassName(stem); | ||
| 46 | } | ||
| 47 | |||
| 48 | /** | ||
| 49 | * Is this spec unique or is it a class pattern? | ||
| 50 | */ | ||
| 51 | public boolean isUnique() { | ||
| 52 | return classId.equals(stem); | ||
| 53 | } | ||
| 54 | |||
| 55 | /** | ||
| 56 | * Does the specified ReferenceType match this spec. | ||
| 57 | */ | ||
| 58 | @Override | ||
| 59 | public boolean matches(ReferenceType refType) { | ||
| 60 | if (classId.startsWith("*")) { | ||
| 61 | return refType.name().endsWith(stem); | ||
| 62 | } else if (classId.endsWith("*")) { | ||
| 63 | return refType.name().startsWith(stem); | ||
| 64 | } else { | ||
| 65 | return refType.name().equals(classId); | ||
| 66 | } | ||
| 67 | } | ||
| 68 | |||
| 69 | @Override | ||
| 70 | public ClassPrepareRequest createPrepareRequest() { | ||
| 71 | ClassPrepareRequest request = | ||
| 72 | Env.vm().eventRequestManager().createClassPrepareRequest(); | ||
| 73 | request.addClassFilter(classId); | ||
| 74 | request.addCountFilter(1); | ||
| 75 | return request; | ||
| 76 | } | ||
| 77 | |||
| 78 | @Override | ||
| 79 | public int hashCode() { | ||
| 80 | return classId.hashCode(); | ||
| 81 | } | ||
| 82 | |||
| 83 | @Override | ||
| 84 | public boolean equals(Object obj) { | ||
| 85 | if (obj instanceof PatternReferenceTypeSpec) { | ||
| 86 | PatternReferenceTypeSpec spec = (PatternReferenceTypeSpec)obj; | ||
| 87 | |||
| 88 | return classId.equals(spec.classId); | ||
| 89 | } else { | ||
| 90 | return false; | ||
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 | private void checkClassName(String className) throws ClassNotFoundException { | ||
| 95 | // Do stricter checking of class name validity on deferred | ||
| 96 | // because if the name is invalid, it will | ||
| 97 | // never match a future loaded class, and we'll be silent | ||
| 98 | // about it. | ||
| 99 | StringTokenizer tokenizer = new StringTokenizer(className, "."); | ||
| 100 | while (tokenizer.hasMoreTokens()) { | ||
| 101 | String token = tokenizer.nextToken(); | ||
| 102 | // Each dot-separated piece must be a valid identifier | ||
| 103 | // and the first token can also be "*". (Note that | ||
| 104 | // numeric class ids are not permitted. They must | ||
| 105 | // match a loaded class.) | ||
| 106 | if (!isJavaIdentifier(token)) { | ||
| 107 | throw new ClassNotFoundException(); | ||
| 108 | } | ||
| 109 | } | ||
| 110 | } | ||
| 111 | |||
| 112 | private boolean isJavaIdentifier(String s) { | ||
| 113 | if (s.length() == 0) { | ||
| 114 | return false; | ||
| 115 | } | ||
| 116 | |||
| 117 | int cp = s.codePointAt(0); | ||
| 118 | if (! Character.isJavaIdentifierStart(cp)) { | ||
| 119 | return false; | ||
| 120 | } | ||
| 121 | |||
| 122 | for (int i = Character.charCount(cp); i < s.length(); i += Character.charCount(cp)) { | ||
| 123 | cp = s.codePointAt(i); | ||
| 124 | if (! Character.isJavaIdentifierPart(cp)) { | ||
| 125 | return false; | ||
| 126 | } | ||
| 127 | } | ||
| 128 | |||
| 129 | return true; | ||
| 130 | } | ||
| 131 | |||
| 132 | @Override | ||
| 133 | public String toString() { | ||
| 134 | return classId; | ||
| 135 | } | ||
| 136 | } | ||