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annotate truffle/com.oracle.truffle.tools.debug.shell/src/com/oracle/truffle/tools/debug/shell/server/REPLServerContext.java @ 22168:ffadd23c63c8

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Introducing Portaal into the isolated world of each and any TruffleLanguage.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Mon, 14 Sep 2015 05:32:13 +0200
parents 547edc5af3fc
children 796f0fef110e
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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1 /*
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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4 *
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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5 * This code is free software; you can redistribute it and/or modify it
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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6 * under the terms of the GNU General Public License version 2 only, as
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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7 * published by the Free Software Foundation. Oracle designates this
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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8 * particular file as subject to the "Classpath" exception as provided
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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9 * by Oracle in the LICENSE file that accompanied this code.
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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10 *
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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14 * version 2 for more details (a copy is included in the LICENSE file that
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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15 * accompanied this code).
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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16 *
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17 * You should have received a copy of the GNU General Public License version
3b8bbf51d320 Truffle/Debugging: add the Truffle DebugEngine and supporting code, as well as add a crude command-line debugging tool used mainly to test the DebugEngine. Migrate the small tols out of project com.oracle.truffle.api into the new project com.oracle.truffle.tools.
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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23 * questions.
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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24 */
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25 package com.oracle.truffle.tools.debug.shell.server;
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26
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27 import com.oracle.truffle.api.debug.Breakpoint;
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28 import com.oracle.truffle.api.debug.Debugger;
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29 import com.oracle.truffle.api.debug.SuspendedEvent;
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30 import com.oracle.truffle.api.frame.*;
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31 import com.oracle.truffle.api.instrument.Visualizer;
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32 import com.oracle.truffle.api.instrument.impl.DefaultVisualizer;
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33 import com.oracle.truffle.api.nodes.*;
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34 import com.oracle.truffle.api.vm.*;
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35 import com.oracle.truffle.api.vm.Portaal.Language;
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36 import com.oracle.truffle.tools.debug.shell.*;
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37 import java.util.ArrayList;
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38 import java.util.Collections;
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39 import java.util.List;
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40
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41 public abstract class REPLServerContext {
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42
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43 private final int level;
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44 private final SuspendedEvent event;
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45
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46 protected REPLServerContext(int level, SuspendedEvent event) {
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47 this.level = level;
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48 this.event = event;
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49 }
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50
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51 /**
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52 * The nesting depth of this context in the current session.
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53 */
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54 public int getLevel() {
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55 return level;
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56 }
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57
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58 /**
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59 * The AST node where execution is halted in this context.
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60 */
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61 public Node getNodeAtHalt() {
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62 return event.getNode();
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63 }
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64
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65 /**
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66 * The frame where execution is halted in this context.
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67 */
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68 public MaterializedFrame getFrameAtHalt() {
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69 return event.getFrame();
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70 }
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71
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72 public abstract Language getLanguage();
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73
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74 public Visualizer getVisualizer() {
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75 return new DefaultVisualizer();
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76 }
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77
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78 public abstract Portaal vm();
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79
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80 protected abstract Debugger db();
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81
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82 /**
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83 * Dispatches a REPL request to the appropriate handler.
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84 */
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85 public abstract REPLMessage[] receive(REPLMessage request);
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86
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87 public abstract void registerBreakpoint(Breakpoint breakpoint);
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88
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89 public abstract Breakpoint findBreakpoint(int id);
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90
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91 public abstract int getBreakpointID(Breakpoint breakpoint);
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92
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93 /**
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94 * Provides access to the execution stack.
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95 *
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96 * @return immutable list of stack elements
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97 */
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98 public List<FrameDebugDescription> getStack() {
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99 List<FrameDebugDescription> frames = new ArrayList<>();
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100 int frameCount = 1;
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101 for (FrameInstance frameInstance : event.getStack()) {
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102 if (frameCount == 1) {
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103 frames.add(new FrameDebugDescription(frameCount, event.getNode(), frameInstance));
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104 } else {
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105 frames.add(new FrameDebugDescription(frameCount, frameInstance.getCallNode(), frameInstance));
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106 }
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107 frameCount++;
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108 }
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109 return Collections.unmodifiableList(frames);
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110 }
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111
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112 void prepareStepOut() {
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113 event.prepareStepOut();
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114 }
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115
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116 void prepareStepInto(int repeat) {
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117 event.prepareStepInto(repeat);
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118 }
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119
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120 void prepareStepOver(int repeat) {
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121 event.prepareStepOver(repeat);
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122 }
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123
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124 void prepareContinue() {
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125 event.prepareContinue();
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126 }
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127 }