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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2008, 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.bdi; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | import com.sun.jdi.request.EventRequest; | ||
| 30 | |||
| 31 | abstract public class EventRequestSpec { | ||
| 32 | |||
| 33 | static final int STATUS_UNRESOLVED = 1; | ||
| 34 | static final int STATUS_RESOLVED = 2; | ||
| 35 | static final int STATUS_ERROR = 3; | ||
| 36 | |||
| 37 | static final Object specPropertyKey = "spec"; | ||
| 38 | |||
| 39 | final EventRequestSpecList specs; | ||
| 40 | final ReferenceTypeSpec refSpec; | ||
| 41 | EventRequest request = null; | ||
| 42 | |||
| 43 | int status = STATUS_UNRESOLVED; | ||
| 44 | |||
| 45 | EventRequestSpec(EventRequestSpecList specs, ReferenceTypeSpec refSpec) { | ||
| 46 | this.specs = specs; | ||
| 47 | this.refSpec = refSpec; | ||
| 48 | } | ||
| 49 | |||
| 50 | void setRequest(EventRequest request) { | ||
| 51 | this.request = request; | ||
| 52 | request.putProperty(specPropertyKey, this); | ||
| 53 | request.enable(); | ||
| 54 | } | ||
| 55 | |||
| 56 | /** | ||
| 57 | * The 'refType' is known to match. | ||
| 58 | */ | ||
| 59 | abstract void resolve(ReferenceType refType) throws Exception; | ||
| 60 | |||
| 61 | abstract void notifySet(SpecListener listener, SpecEvent evt); | ||
| 62 | abstract void notifyDeferred(SpecListener listener, SpecEvent evt); | ||
| 63 | abstract void notifyResolved(SpecListener listener, SpecEvent evt); | ||
| 64 | abstract void notifyDeleted(SpecListener listener, SpecEvent evt); | ||
| 65 | abstract void notifyError(SpecListener listener, SpecErrorEvent evt); | ||
| 66 | |||
| 67 | /** | ||
| 68 | * The 'refType' is known to match. | ||
| 69 | */ | ||
| 70 | void resolveNotify(ReferenceType refType) { | ||
| 71 | try { | ||
| 72 | resolve(refType); | ||
| 73 | status = STATUS_RESOLVED; | ||
| 74 | specs.notifyResolved(this); | ||
| 75 | } catch(Exception exc) { | ||
| 76 | status = STATUS_ERROR; | ||
| 77 | specs.notifyError(this, exc); | ||
| 78 | } | ||
| 79 | } | ||
| 80 | |||
| 81 | /** | ||
| 82 | * See if 'refType' matches and resolve. | ||
| 83 | */ | ||
| 84 | void attemptResolve(ReferenceType refType) { | ||
| 85 | if (!isResolved() && refSpec.matches(refType)) { | ||
| 86 | resolveNotify(refType); | ||
| 87 | } | ||
| 88 | } | ||
| 89 | |||
| 90 | void attemptImmediateResolve(VirtualMachine vm) { | ||
| 91 | // try to resolve immediately | ||
| 92 | for (ReferenceType refType : vm.allClasses()) { | ||
| 93 | if (refSpec.matches(refType)) { | ||
| 94 | try { | ||
| 95 | resolve(refType); | ||
| 96 | status = STATUS_RESOLVED; | ||
| 97 | specs.notifySet(this); | ||
| 98 | } catch(Exception exc) { | ||
| 99 | status = STATUS_ERROR; | ||
| 100 | specs.notifyError(this, exc); | ||
| 101 | } | ||
| 102 | return; | ||
| 103 | } | ||
| 104 | } | ||
| 105 | specs.notifyDeferred(this); | ||
| 106 | } | ||
| 107 | |||
| 108 | public EventRequest getEventRequest() { | ||
| 109 | return request; | ||
| 110 | } | ||
| 111 | |||
| 112 | /** | ||
| 113 | * @return true if this spec has been resolved. | ||
| 114 | */ | ||
| 115 | public boolean isResolved() { | ||
| 116 | return status == STATUS_RESOLVED; | ||
| 117 | } | ||
| 118 | |||
| 119 | /** | ||
| 120 | * @return true if this spec has not yet been resolved. | ||
| 121 | */ | ||
| 122 | public boolean isUnresolved() { | ||
| 123 | return status == STATUS_UNRESOLVED; | ||
| 124 | } | ||
| 125 | |||
| 126 | /** | ||
| 127 | * @return true if this spec is unresolvable due to error. | ||
| 128 | */ | ||
| 129 | public boolean isErroneous() { | ||
| 130 | return status == STATUS_ERROR; | ||
| 131 | } | ||
| 132 | |||
| 133 | public String getStatusString() { | ||
| 134 | switch (status) { | ||
| 135 | case STATUS_RESOLVED: | ||
| 136 | return "resolved"; | ||
| 137 | case STATUS_UNRESOLVED: | ||
| 138 | return "deferred"; | ||
| 139 | case STATUS_ERROR: | ||
| 140 | return "erroneous"; | ||
| 141 | } | ||
| 142 | return "unknown"; | ||
| 143 | } | ||
| 144 | |||
| 145 | boolean isJavaIdentifier(String s) { | ||
| 146 | return Utils.isJavaIdentifier(s); | ||
| 147 | } | ||
| 148 | |||
| 149 | public String errorMessageFor(Exception e) { | ||
| 150 | if (e instanceof IllegalArgumentException) { | ||
| 151 | return ("Invalid command syntax"); | ||
| 152 | } else if (e instanceof RuntimeException) { | ||
| 153 | // A runtime exception that we were not expecting | ||
| 154 | throw (RuntimeException)e; | ||
| 155 | } else { | ||
| 156 | return ("Internal error; unable to set" + this); | ||
| 157 | } | ||
| 158 | } | ||
| 159 | } | ||