Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.sl.tools/src/com/oracle/truffle/sl/tools/debug/SLREPLServer.java @ 21997:c07e64ecb528
Update SL copyright headers to use UPL
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
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date | Thu, 16 Jul 2015 15:50:46 +0200 |
parents | 9c8c0937da41 |
children | 5bc7f7b867ab |
rev | line source |
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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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1 /* |
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2 * Copyright (c) 2014, 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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4 * |
21997
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5 * The Universal Permissive License (UPL), Version 1.0 |
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6 * |
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7 * Subject to the condition set forth below, permission is hereby granted to any |
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8 * person obtaining a copy of this software, associated documentation and/or |
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9 * data (collectively the "Software"), free of charge and under any and all |
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10 * copyright rights in the Software, and any and all patent rights owned or |
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11 * freely licensable by each licensor hereunder covering either (i) the |
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12 * unmodified Software as contributed to or provided by such licensor, or (ii) |
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13 * the Larger Works (as defined below), to deal in both |
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14 * |
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15 * (a) the Software, and |
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16 * |
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17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
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18 * one is included with the Software each a "Larger Work" to which the Software |
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19 * is contributed by such licensors), |
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20 * |
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21 * without restriction, including without limitation the rights to copy, create |
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22 * derivative works of, display, perform, and distribute the Software and make, |
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23 * use, sell, offer for sale, import, export, have made, and have sold the |
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24 * Software and the Larger Work(s), and to sublicense the foregoing rights on |
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25 * either these or other terms. |
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26 * |
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27 * This license is subject to the following condition: |
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28 * |
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29 * The above copyright notice and either this complete permission notice or at a |
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30 * minimum a reference to the UPL must be included in all copies or substantial |
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31 * portions of the Software. |
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32 * |
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33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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36 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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37 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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38 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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39 * SOFTWARE. |
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40 */ |
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41 package com.oracle.truffle.sl.tools.debug; |
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42 |
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43 import java.util.*; |
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44 |
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45 import com.oracle.truffle.api.frame.*; |
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46 import com.oracle.truffle.api.instrument.*; |
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47 import com.oracle.truffle.api.nodes.*; |
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48 import com.oracle.truffle.api.source.*; |
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49 import com.oracle.truffle.api.vm.*; |
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50 import com.oracle.truffle.api.vm.TruffleVM.Language; |
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51 import com.oracle.truffle.sl.*; |
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52 import com.oracle.truffle.tools.debug.engine.*; |
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53 import com.oracle.truffle.tools.debug.shell.*; |
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54 import com.oracle.truffle.tools.debug.shell.client.*; |
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55 import com.oracle.truffle.tools.debug.shell.server.*; |
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56 |
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57 /** |
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58 * Instantiation of the "server" side of the "REPL*" debugger for the Simple language. |
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59 * <p> |
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60 * The SL parser is not equipped to parse program fragments, so any debugging functions that depend |
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61 * on this are not supported, for example {@link DebugEngine#eval(Source, Node, MaterializedFrame)} |
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62 * and {@link Breakpoint#setCondition(String)}. |
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63 * |
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64 * @see SimpleREPLClient |
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65 */ |
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66 public final class SLREPLServer implements REPLServer { |
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67 |
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68 // TODO (mlvdv) remove when there's a better way to express this dependency |
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69 @SuppressWarnings("unused") private static final Class<SLLanguage> DYNAMIC_DEPENDENCY = com.oracle.truffle.sl.SLLanguage.class; |
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70 |
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71 public static void main(String[] args) { |
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72 // Cheating for the prototype: start from SL, rather than from the client. |
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73 final SLREPLServer server = new SLREPLServer(); |
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74 final SimpleREPLClient client = new SimpleREPLClient(server.language.getShortName(), server); |
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75 |
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76 // Cheating for the prototype: allow server access to client for recursive debugging |
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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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77 server.setClient(client); |
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78 |
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79 try { |
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80 client.start(); |
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81 } catch (QuitException ex) { |
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82 } |
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83 } |
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84 |
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85 private final Language language; |
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86 private final DebugEngine slDebugEngine; |
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87 private final String statusPrefix; |
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88 private final Map<String, REPLHandler> handlerMap = new HashMap<>(); |
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89 private SLServerContext currentServerContext; |
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90 private SimpleREPLClient replClient = null; |
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91 |
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92 private void add(REPLHandler fileHandler) { |
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93 handlerMap.put(fileHandler.getOp(), fileHandler); |
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94 } |
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95 |
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96 public SLREPLServer() { |
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97 add(REPLHandler.BACKTRACE_HANDLER); |
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98 add(REPLHandler.BREAK_AT_LINE_HANDLER); |
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99 add(REPLHandler.BREAK_AT_LINE_ONCE_HANDLER); |
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100 add(REPLHandler.BREAK_AT_THROW_HANDLER); |
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101 add(REPLHandler.BREAK_AT_THROW_ONCE_HANDLER); |
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102 add(REPLHandler.BREAKPOINT_INFO_HANDLER); |
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103 add(REPLHandler.CLEAR_BREAK_HANDLER); |
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104 add(REPLHandler.CONTINUE_HANDLER); |
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105 add(REPLHandler.DELETE_HANDLER); |
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106 add(REPLHandler.DISABLE_BREAK_HANDLER); |
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107 add(REPLHandler.ENABLE_BREAK_HANDLER); |
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108 add(REPLHandler.FILE_HANDLER); |
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109 add(REPLHandler.FRAME_HANDLER); |
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110 add(SLREPLHandler.INFO_HANDLER); |
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111 add(REPLHandler.KILL_HANDLER); |
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112 add(SLREPLHandler.LOAD_RUN_SOURCE_HANDLER); |
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113 add(SLREPLHandler.LOAD_STEP_SOURCE_HANDLER); |
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114 add(REPLHandler.QUIT_HANDLER); |
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115 add(REPLHandler.STEP_INTO_HANDLER); |
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116 add(REPLHandler.STEP_OUT_HANDLER); |
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117 add(REPLHandler.STEP_OVER_HANDLER); |
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118 add(REPLHandler.TRUFFLE_HANDLER); |
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119 add(REPLHandler.TRUFFLE_NODE_HANDLER); |
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120 |
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121 TruffleVM vm = TruffleVM.newVM().build(); |
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122 this.language = vm.getLanguages().get("application/x-sl"); |
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123 assert language != null; |
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124 |
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125 final SLREPLDebugClient slDebugClient = new SLREPLDebugClient(language); |
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126 this.slDebugEngine = DebugEngine.create(slDebugClient, language); |
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127 |
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128 this.statusPrefix = language.getShortName() + " REPL:"; |
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129 } |
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130 |
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131 private void setClient(SimpleREPLClient replClient) { |
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132 this.replClient = replClient; |
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133 } |
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134 |
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135 public REPLMessage start() { |
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136 |
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137 this.currentServerContext = new SLServerContext(null, null, null); |
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138 |
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139 // SL doesn't load modules (like other languages), so we just return a success |
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140 final REPLMessage reply = new REPLMessage(); |
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141 reply.put(REPLMessage.STATUS, REPLMessage.SUCCEEDED); |
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142 reply.put(REPLMessage.DISPLAY_MSG, language.getShortName() + " started"); |
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143 return reply; |
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144 } |
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145 |
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146 public REPLMessage[] receive(REPLMessage request) { |
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147 if (currentServerContext == null) { |
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148 final REPLMessage message = new REPLMessage(); |
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149 message.put(REPLMessage.STATUS, REPLMessage.FAILED); |
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150 message.put(REPLMessage.DISPLAY_MSG, "server not started"); |
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151 final REPLMessage[] reply = new REPLMessage[]{message}; |
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152 return reply; |
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153 } |
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154 return currentServerContext.receive(request); |
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155 } |
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156 |
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157 /** |
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158 * Execution context of a halted SL program. |
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159 */ |
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160 public final class SLServerContext extends REPLServerContext { |
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161 |
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162 private final SLServerContext predecessor; |
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163 |
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164 public SLServerContext(SLServerContext predecessor, Node astNode, MaterializedFrame mFrame) { |
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165 super(predecessor == null ? 0 : predecessor.getLevel() + 1, astNode, mFrame); |
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166 this.predecessor = predecessor; |
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167 } |
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168 |
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169 @Override |
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170 public REPLMessage[] receive(REPLMessage request) { |
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171 final String command = request.get(REPLMessage.OP); |
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172 final REPLHandler handler = handlerMap.get(command); |
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173 |
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174 if (handler == null) { |
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175 final REPLMessage message = new REPLMessage(); |
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176 message.put(REPLMessage.OP, command); |
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177 message.put(REPLMessage.STATUS, REPLMessage.FAILED); |
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178 message.put(REPLMessage.DISPLAY_MSG, statusPrefix + " op \"" + command + "\" not supported"); |
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179 final REPLMessage[] reply = new REPLMessage[]{message}; |
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180 return reply; |
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181 } |
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182 return handler.receive(request, currentServerContext); |
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183 } |
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184 |
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185 @Override |
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186 public Language getLanguage() { |
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187 return language; |
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188 } |
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189 |
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190 @Override |
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191 public DebugEngine getDebugEngine() { |
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192 return slDebugEngine; |
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193 } |
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194 |
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195 } |
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196 |
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197 /** |
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198 * Specialize the standard SL debug context by notifying the REPL client when execution is |
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199 * halted, e.g. at a breakpoint. |
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200 * <p> |
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201 * Before notification, the server creates a new context at the halted location, in which |
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202 * subsequent evaluations take place until such time as the client says to "continue". |
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203 * <p> |
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204 * This implementation "cheats" the intended asynchronous architecture by calling back directly |
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205 * to the client with the notification. |
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206 */ |
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207 private final class SLREPLDebugClient implements DebugClient { |
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208 |
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209 private final Language language; |
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210 |
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211 SLREPLDebugClient(Language language) { |
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212 this.language = language; |
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213 } |
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214 |
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215 public void haltedAt(Node node, MaterializedFrame mFrame, List<String> warnings) { |
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216 // Create and push a new debug context where execution is halted |
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217 currentServerContext = new SLServerContext(currentServerContext, node, mFrame); |
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218 |
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219 // Message the client that execution is halted and is in a new debugging context |
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220 final REPLMessage message = new REPLMessage(); |
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221 message.put(REPLMessage.OP, REPLMessage.STOPPED); |
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222 final SourceSection src = node.getSourceSection(); |
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223 final Source source = src.getSource(); |
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224 message.put(REPLMessage.SOURCE_NAME, source.getName()); |
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225 message.put(REPLMessage.FILE_PATH, source.getPath()); |
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226 message.put(REPLMessage.LINE_NUMBER, Integer.toString(src.getStartLine())); |
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227 message.put(REPLMessage.STATUS, REPLMessage.SUCCEEDED); |
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228 message.put(REPLMessage.DEBUG_LEVEL, Integer.toString(currentServerContext.getLevel())); |
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229 if (!warnings.isEmpty()) { |
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230 final StringBuilder sb = new StringBuilder(); |
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231 for (String warning : warnings) { |
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232 sb.append(warning + "\n"); |
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233 } |
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234 message.put(REPLMessage.WARNINGS, sb.toString()); |
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235 } |
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236 try { |
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237 // Cheat with synchrony: call client directly about entering a nested debugging |
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238 // context. |
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239 replClient.halted(message); |
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240 } finally { |
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241 // Returns when "continue" is called in the new debugging context |
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242 |
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243 // Pop the debug context, and return so that the old context will continue |
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244 currentServerContext = currentServerContext.predecessor; |
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245 } |
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246 } |
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247 |
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248 public Language getLanguage() { |
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249 return language; |
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250 } |
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251 } |
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252 |
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253 } |