| Clover coverage report - DrJava Test Coverage (drjava-20120304-r5456) |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| PendingRequestManager.java | 0% | 3% | 16.7% | 3% |
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| 1 | /*BEGIN_COPYRIGHT_BLOCK | |
| 2 | * | |
| 3 | * Copyright (c) 2001-2010, JavaPLT group at Rice University (drjava@rice.edu) | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions are met: | |
| 8 | * * Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * * Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the | |
| 14 | * names of its contributors may be used to endorse or promote products | |
| 15 | * derived from this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | * | |
| 29 | * This software is Open Source Initiative approved Open Source Software. | |
| 30 | * Open Source Initative Approved is a trademark of the Open Source Initiative. | |
| 31 | * | |
| 32 | * This file is part of DrJava. Download the current version of this project | |
| 33 | * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/ | |
| 34 | * | |
| 35 | * END_COPYRIGHT_BLOCK*/ | |
| 36 | ||
| 37 | package edu.rice.cs.drjava.model.debug.jpda; | |
| 38 | ||
| 39 | import com.sun.jdi.*; | |
| 40 | import com.sun.jdi.request.*; | |
| 41 | import com.sun.jdi.event.*; | |
| 42 | ||
| 43 | import java.util.HashMap; | |
| 44 | import java.util.List; | |
| 45 | import java.util.Vector; | |
| 46 | import java.util.TreeMap; | |
| 47 | ||
| 48 | import java.io.File; | |
| 49 | ||
| 50 | import edu.rice.cs.drjava.model.DrJavaFileUtils; | |
| 51 | import edu.rice.cs.drjava.model.debug.DebugException; | |
| 52 | import edu.rice.cs.drjava.model.compiler.LanguageLevelStackTraceMapper; | |
| 53 | ||
| 54 | /** Keeps track of DocumentDebugActions that are waiting to be resolved when the classes they corresponed to are | |
| 55 | * prepared. (Only DocumentDebugActions have reference types which can be prepared.) | |
| 56 | * @version $Id: PendingRequestManager.java 5442 2011-08-16 09:11:12Z rcartwright $ | |
| 57 | */ | |
| 58 | ||
| 59 | public class PendingRequestManager { | |
| 60 | private JPDADebugger _manager; | |
| 61 | private HashMap<String, Vector<DocumentDebugAction<?>>> _pendingActions; | |
| 62 | ||
| 63 | 2198 | public PendingRequestManager(JPDADebugger manager) { |
| 64 | 2198 | _manager = manager; |
| 65 | 2198 | _pendingActions = new HashMap<String, Vector<DocumentDebugAction<?>>>(); |
| 66 | } | |
| 67 | ||
| 68 | /** Called if a breakpoint is set before its class is prepared | |
| 69 | * @param action The DebugAction that is pending | |
| 70 | */ | |
| 71 | 0 | public void addPendingRequest (DocumentDebugAction<?> action) { |
| 72 | 0 | String className = action.getClassName(); |
| 73 | 0 | Vector<DocumentDebugAction<?>> actions = _pendingActions.get(className); |
| 74 | 0 | if (actions == null) { |
| 75 | 0 | actions = new Vector<DocumentDebugAction<?>>(); |
| 76 | ||
| 77 | // only create a ClassPrepareRequest once per class | |
| 78 | 0 | ClassPrepareRequest request = |
| 79 | _manager.getEventRequestManager().createClassPrepareRequest(); | |
| 80 | // Listen for events from the class, and also its inner classes | |
| 81 | 0 | request.addClassFilter(className + "*"); |
| 82 | 0 | request.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD); |
| 83 | 0 | request.enable(); |
| 84 | //System.out.println("Creating prepareRequest in class " + className); | |
| 85 | } | |
| 86 | 0 | actions.add(action); |
| 87 | 0 | _pendingActions.put(className, actions); |
| 88 | } | |
| 89 | ||
| 90 | /** Called if a breakpoint is set and removed before its class is prepared | |
| 91 | * @param action The DebugAction that was set and removed | |
| 92 | */ | |
| 93 | 0 | public void removePendingRequest (DocumentDebugAction<?> action) { |
| 94 | 0 | String className = action.getClassName(); |
| 95 | 0 | Vector<DocumentDebugAction<?>> actions = _pendingActions.get(className); |
| 96 | 0 | if (actions == null) { |
| 97 | 0 | return; |
| 98 | } | |
| 99 | 0 | actions.remove(action); |
| 100 | // check if the vector is empty | |
| 101 | 0 | if (actions.size() == 0) { |
| 102 | 0 | _pendingActions.remove(className); |
| 103 | } | |
| 104 | } | |
| 105 | ||
| 106 | /** Recursively look through all nested types to see if the line number exists. | |
| 107 | * @param lineNumber line number to look for | |
| 108 | * @param rt reference type to start at | |
| 109 | * @return true if line number is found | |
| 110 | */ | |
| 111 | 0 | private boolean recursiveFindLineNumber(int lineNumber, ReferenceType rt) { |
| 112 | 0 | try { |
| 113 | 0 | for(Location l: rt.allLineLocations()) { |
| 114 | 0 | if (l.lineNumber() == lineNumber) { return true; } |
| 115 | } | |
| 116 | 0 | for(ReferenceType nested: rt.nestedTypes()) { |
| 117 | 0 | if (recursiveFindLineNumber(lineNumber, nested) == true) { return true; } |
| 118 | } | |
| 119 | } | |
| 120 | catch (AbsentInformationException aie) { /* fall through and return false */ } | |
| 121 | 0 | return false; |
| 122 | } | |
| 123 | ||
| 124 | ||
| 125 | /** | |
| 126 | * Method to change Language Level line numbers into their java file counterparts | |
| 127 | * @param dda the DocumentDebugAction whose line needs to be adjusted | |
| 128 | * @return the correct line number for the .java file | |
| 129 | */ | |
| 130 | 0 | public int LLDDALineNum(DocumentDebugAction<?> dda){ |
| 131 | 0 | int line = dda.getLineNumber(); |
| 132 | 0 | File f = dda.getFile(); |
| 133 | ||
| 134 | 0 | if (DrJavaFileUtils.isLLFile(f)) { |
| 135 | 0 | f = DrJavaFileUtils.getJavaForLLFile(f); |
| 136 | 0 | TreeMap<Integer, Integer> tM = _manager.getLLSTM().readLLBlock(f); |
| 137 | 0 | line = tM.get(dda.getLineNumber()); |
| 138 | } | |
| 139 | 0 | return line; |
| 140 | } | |
| 141 | ||
| 142 | /** Called by the EventHandler whenever a ClassPrepareEvent occurs. This will take the event, get the class that was | |
| 143 | * prepared, lookup the Vector of DebugAction that was waiting for this class's preparation, iterate through this | |
| 144 | * Vector, and attempt to create the Breakpoints that | |
| 145 | * were pending. Since the keys to the Hashtable are the names of the | |
| 146 | * outer class, the $ and everything after it must be cropped off from the | |
| 147 | * class name in order to do the lookup. During the lookup, however, the line | |
| 148 | * number of each action is checked to see if the line number is contained | |
| 149 | * in the given event's ReferenceType. If not, we ignore that pending action | |
| 150 | * since it is not in the class that was just prepared, but may be in one of its | |
| 151 | * inner classes. | |
| 152 | * @param event The ClassPrepareEvent that just occured | |
| 153 | */ | |
| 154 | 0 | public void classPrepared (ClassPrepareEvent event) throws DebugException { |
| 155 | 0 | ReferenceType rt = event.referenceType(); |
| 156 | //DrJava.consoleOut().println("In classPrepared. rt: " + rt); | |
| 157 | //DrJava.consoleOut().println("equals getReferenceType: " + | |
| 158 | // rt.equals(_manager.getReferenceType(rt.name()))); | |
| 159 | 0 | String className = rt.name(); |
| 160 | ||
| 161 | // crop off the $ if there is one and anything after it | |
| 162 | 0 | int indexOfDollar = className.indexOf('$'); |
| 163 | 0 | if (indexOfDollar > 1) { |
| 164 | 0 | className = className.substring(0, indexOfDollar); |
| 165 | } | |
| 166 | ||
| 167 | // Get the pending actions for this class (and inner classes) | |
| 168 | 0 | Vector<DocumentDebugAction<?>> actions = _pendingActions.get(className); |
| 169 | 0 | Vector<DocumentDebugAction<?>> failedActions = |
| 170 | new Vector<DocumentDebugAction<?>>(); | |
| 171 | //DrJava.consoleOut().println("pending actions: " + actions); | |
| 172 | 0 | if (actions == null) { |
| 173 | // Must have been a different class with a matching prefix, ignore it | |
| 174 | // since we're not interested in this class. | |
| 175 | 0 | return; |
| 176 | } | |
| 177 | 0 | else if (actions.isEmpty()) { |
| 178 | // any actions that were waiting for this class to be prepared have been | |
| 179 | // removed | |
| 180 | 0 | _manager.getEventRequestManager().deleteEventRequest(event.request()); |
| 181 | 0 | return; |
| 182 | } | |
| 183 | 0 | for (int i = 0; i < actions.size(); i++) { |
| 184 | 0 | DocumentDebugAction<?> a = actions.get(i); |
| 185 | 0 | int lineNumber = LLDDALineNum(a);//a.getLineNumber(); |
| 186 | 0 | if (lineNumber != DebugAction.ANY_LINE) { |
| 187 | 0 | try { |
| 188 | 0 | List<Location> lines = rt.locationsOfLine(lineNumber); |
| 189 | 0 | if (lines.size() == 0) { |
| 190 | // Do not disable action; the line number might just be in another class in the same file | |
| 191 | 0 | String exactClassName = a.getExactClassName(); |
| 192 | 0 | if (exactClassName != null && exactClassName.equals(rt.name())) { |
| 193 | 0 | _manager.printMessage(actions.get(i).toString() + " not on an executable line; disabled."); |
| 194 | 0 | actions.get(i).setEnabled(false); |
| 195 | } | |
| 196 | ||
| 197 | // Requested line number not in reference type, skip this action | |
| 198 | 0 | continue; |
| 199 | } | |
| 200 | } | |
| 201 | catch (AbsentInformationException aie) { | |
| 202 | // outer class has no line number info, skip this action | |
| 203 | 0 | continue; |
| 204 | } | |
| 205 | } | |
| 206 | // check if the action was successfully created | |
| 207 | 0 | try { |
| 208 | 0 | Vector<ReferenceType> refTypes = new Vector<ReferenceType>(); |
| 209 | 0 | refTypes.add(rt); |
| 210 | 0 | a.createRequests(refTypes); // This type warning will go away in JDK 1.5 |
| 211 | } | |
| 212 | catch (DebugException e) { | |
| 213 | 0 | failedActions.add(a); |
| 214 | // DrJava.consoleOut().println("Exception preparing request!! " + e); | |
| 215 | } | |
| 216 | } | |
| 217 | ||
| 218 | // For debugging purposes | |
| 219 | /* | |
| 220 | List l = _manager.getEventRequestManager().breakpointRequests(); | |
| 221 | System.out.println("list of eventrequestmanager's breakpointRequests: " + | |
| 222 | l); | |
| 223 | for (int i = 0; i < l.size(); i++) { | |
| 224 | BreakpointRequest br = (BreakpointRequest)l.get(i); | |
| 225 | System.out.println("isEnabled(): " + br.isEnabled() + | |
| 226 | " suspendPolicy(): " + br.suspendPolicy() + | |
| 227 | " location(): " + br.location()); | |
| 228 | } | |
| 229 | */ | |
| 230 | 0 | if (failedActions.size() > 0) { |
| 231 | // need to create an exception framework | |
| 232 | 0 | throw new DebugException("Failed actions: " + failedActions); |
| 233 | } | |
| 234 | } | |
| 235 | } |
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