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   1 package net.mograsim.logic.model.am2900.util;
   2
   3 import static org.junit.jupiter.api.Assertions.fail;
   4
   5 import java.lang.reflect.Field;
   6 import java.util.HashMap;
   7 import java.util.HashSet;
   8 import java.util.LinkedList;
   9 import java.util.Objects;
  10 import java.util.Optional;
  11 import java.util.Queue;
  12 import java.util.Set;
  13 import java.util.TreeSet;
  14
  15 import net.mograsim.logic.core.components.CoreBitDisplay;
  16 import net.mograsim.logic.core.components.CoreManualSwitch;
  17 import net.mograsim.logic.core.timeline.Timeline;
  18 import net.mograsim.logic.model.LogicUIStandaloneGUI;
  19 import net.mograsim.logic.model.am2900.Am2900Loader;
  20 import net.mograsim.logic.model.am2900.TestableCircuit;
  21 import net.mograsim.logic.model.am2900.TestableCircuit.Result;
  22 import net.mograsim.logic.model.model.LogicModel;
  23 import net.mograsim.logic.model.model.LogicModelModifiable;
  24 import net.mograsim.logic.model.model.components.ModelComponent;
  25 import net.mograsim.logic.model.model.components.atomic.ModelBitDisplay;
  26 import net.mograsim.logic.model.model.components.atomic.ModelManualSwitch;
  27 import net.mograsim.logic.model.model.components.submodels.SubmodelComponent;
  28 import net.mograsim.logic.model.model.wires.ModelWire;
  29 import net.mograsim.logic.model.model.wires.Pin;
  30 import net.mograsim.logic.model.modeladapter.CoreModelParameters.CoreModelParametersBuilder;
  31 import net.mograsim.logic.model.modeladapter.LogicCoreAdapter;
  32 import net.mograsim.logic.model.preferences.DefaultRenderPreferences;
  33 import net.mograsim.logic.model.serializing.IndirectModelComponentCreator;
  34 import net.mograsim.logic.model.util.ModellingTool;
  35
  36 public class TestEnvironmentHelper
  37 {
  38         private final TestableCircuit testEnvInstance;
  39         private final Class<?> testEnvClass;
  40         private final String modelId;
  41         private Field componentField;
  42         private Optional<Field> timelineField = Optional.empty();
  43
  44         private ModelComponent component;
  45         private Timeline timeline;
  46         private LogicModelModifiable logicModel;
  47         private ModellingTool modellingTool;
  48         private HashMap<String, ModelManualSwitch> idSwitchMap = new HashMap<>();
  49         private HashMap<String, ModelBitDisplay> idDisplayMap = new HashMap<>();
  50
  51         private DebugState debug = DebugState.NO_DEBUG;
  52         private Set<String> wireDebugChangeSet;
  53         private boolean debugWires = false;
  54         public int debugEventThreshold = 20_000;
  55         public int debugEventCount = 500;
  56         private int eventCounter;
  57
  58         public TestEnvironmentHelper(TestableCircuit testEnv, String modelId)
  59         {
  60                 this.testEnvInstance = testEnv;
  61                 this.modelId = modelId;
  62                 this.testEnvClass = testEnvInstance.getClass();
  63                 for (Field f : testEnvClass.getDeclaredFields())
  64                 {
  65                         if (ModelComponent.class.isAssignableFrom(f.getType()))
  66                         {
  67                                 componentField = f;
  68                                 componentField.setAccessible(true);
  69                         } else if (Timeline.class.isAssignableFrom(f.getType()))
  70                         {
  71                                 f.setAccessible(true);
  72                                 timelineField = Optional.of(f);
  73                         }
  74                 }
  75                 if (componentField == null)
  76                         throw new IllegalStateException("No component or timeline field found!");
  77         }
  78
  79         public void setup(DebugState debug)
  80         {
  81                 this.debug = debug;
  82                 // Create logic model
  83                 logicModel = new LogicModelModifiable();
  84                 modellingTool = ModellingTool.createFor(logicModel);
  85                 Am2900Loader.setup();
  86                 component = IndirectModelComponentCreator.createComponent(logicModel, modelId);
  87                 setField(componentField, component);
  88
  89                 component.getPins().values().forEach(this::extendModelPin);
  90
  91                 // Create core model
  92                 CoreModelParametersBuilder paramsBuilder = new CoreModelParametersBuilder();
  93                 paramsBuilder.gateProcessTime = 50;
  94                 paramsBuilder.hardcodedComponentProcessTime = paramsBuilder.gateProcessTime * 5;
  95                 paramsBuilder.wireTravelTime = 10;
  96                 timeline = LogicCoreAdapter.convert(logicModel, paramsBuilder.build());
  97                 timelineField.ifPresent(f -> setField(f, timeline));
  98
  99                 // Bind switches/displays to this test class
 100                 component.getPins().values().forEach(this::bindModelPin);
 101
 102                 if (debug == DebugState.DEBUG_AT_PERFORMANCE_COST)
 103                 {
 104                         setupDebugging();
 105                 }
 106                 timeline.addEventAddedListener(te -> eventCounter++);
 107         }
 108
 109         private void extendModelPin(Pin p)
 110         {
 111                 String javaIdentId = idToJavaIdentifier(p.name);
 112                 try
 113                 {
 114                         Field f = testEnvClass.getDeclaredField(javaIdentId);
 115                         Class<?> type = f.getType();
 116                         if (CoreManualSwitch.class.isAssignableFrom(type))
 117                         {
 118                                 ModelManualSwitch gms = new ModelManualSwitch(logicModel, p.logicWidth);
 119                                 modellingTool.connect(p, gms.getOutputPin());
 120                                 idSwitchMap.put(p.name, gms);
 121                         } else if (CoreBitDisplay.class.isAssignableFrom(type))
 122                         {
 123                                 ModelBitDisplay gbd = new ModelBitDisplay(logicModel, p.logicWidth);
 124                                 modellingTool.connect(p, gbd.getInputPin());
 125                                 idDisplayMap.put(p.name, gbd);
 126                         } else if (SwitchWithDisplay.class.isAssignableFrom(type))
 127                         {
 128                                 SwitchWithDisplay swd = new SwitchWithDisplay(logicModel, p);
 129                                 setField(f, swd);
 130                         } else
 131                         {
 132                                 fail("unkown field type " + type);
 133                         }
 134                 }
 135                 catch (NoSuchFieldException | SecurityException e)
 136                 {
 137                         fail(e);
 138                 }
 139         }
 140
 141         private void bindModelPin(Pin p)
 142         {
 143                 String javaIdentId = idToJavaIdentifier(p.name);
 144                 if (idDisplayMap.containsKey(p.name))
 145                         setField(javaIdentId, idDisplayMap.get(p.name).getBitDisplay());
 146                 if (idSwitchMap.containsKey(p.name))
 147                         setField(javaIdentId, idSwitchMap.get(p.name).getManualSwitch());
 148         }
 149
 150         private void setupDebugging()
 151         {
 152                 // Debug code
 153                 HashSet<ModelWire> wiresIncludingSubmodels = new HashSet<>();
 154                 Queue<LogicModel> modelsToIterate = new LinkedList<>();
 155                 modelsToIterate.add(logicModel);
 156                 while (modelsToIterate.size() > 0)
 157                 {
 158                         LogicModel model = modelsToIterate.poll();
 159                         wiresIncludingSubmodels.addAll(model.getWiresByName().values());
 160                         for (ModelComponent comp : model.getComponentsByName().values())
 161                                 if (comp instanceof SubmodelComponent)
 162                                         modelsToIterate.offer(((SubmodelComponent) comp).submodel);
 163                 }
 164                 System.out.println(wiresIncludingSubmodels.size());
 165                 logicModel.setRedrawHandler(() -> wiresIncludingSubmodels.forEach(w ->
 166                 {
 167                         if (debugWires)
 168                         {
 169                                 wireDebugChangeSet.add(w.toString());
 170                         }
 171                 }));
 172         }
 173
 174         public Result run()
 175         {
 176                 // Normal execution until completion or eventLimit
 177                 int eventLimit = debugEventThreshold;
 178                 eventCounter = 0;
 179                 debugWires = false;
 180                 while (eventCounter < eventLimit)
 181                 {
 182                         timeline.executeNext();
 183                         if (!timeline.hasNext())
 184                                 return Result.SUCCESS;
 185                 }
 186
 187                 // Start debugging if event limit is reached (if debug is active)
 188                 if (debug == DebugState.DEBUG_AT_PERFORMANCE_COST)
 189                         return debugThisRun();
 190
 191                 return Result.OUT_OF_TIME;
 192         }
 193
 194         private Result debugThisRun()
 195         {
 196                 int eventLimit = debugEventThreshold;
 197                 debugWires = true;
 198                 wireDebugChangeSet = new TreeSet<>();
 199                 Set<String> oldChangeSet;
 200                 // observe wire changes to detect, if we are really stuck in an endless loop
 201                 do
 202                 {
 203                         eventLimit += debugEventCount;
 204                         oldChangeSet = wireDebugChangeSet;
 205                         wireDebugChangeSet = new TreeSet<>();
 206                         while (eventCounter < eventLimit)
 207                         {
 208                                 timeline.executeNext();
 209                                 if (!timeline.hasNext())
 210                                 {
 211                                         // no endless loop, but more events needed than expected
 212                                         System.out.println("run() took longer than expected: " + eventCounter);
 213                                         return Result.SUCCESS;
 214                                 }
 215                         }
 216                 } while (!oldChangeSet.equals(wireDebugChangeSet));
 217                 // if stuck, abort execution and print wires
 218                 System.err.print("Problematic Wire updates:");
 219                 wireDebugChangeSet.forEach(System.out::println);
 220                 System.err.println("run() failed: " + eventCounter);
 221                 return Result.OUT_OF_TIME;
 222         }
 223
 224         private static String idToJavaIdentifier(String s)
 225         {
 226                 StringBuilder sb = new StringBuilder(s.length());
 227                 char c = s.charAt(0);
 228                 sb.append(Character.isJavaIdentifierStart(c) ? c : '_');
 229                 for (int i = 1; i < s.length(); i++)
 230                         sb.append(Character.isJavaIdentifierPart(c = s.charAt(i)) ? c : '_');
 231                 return sb.toString();
 232         }
 233
 234         private <S> void setField(Field f, S value)
 235         {
 236                 try
 237                 {
 238                         f.setAccessible(true);
 239                         f.set(testEnvInstance, Objects.requireNonNull(value));
 240                 }
 241                 catch (Exception e)
 242                 {
 243                         fail(e);
 244                 }
 245         }
 246
 247         private <S> void setField(String name, S value)
 248         {
 249                 try
 250                 {
 251                         Field f = testEnvClass.getDeclaredField(name);
 252                         f.setAccessible(true);
 253                         f.set(testEnvInstance, Objects.requireNonNull(value));
 254                 }
 255                 catch (Exception e)
 256                 {
 257                         fail(e);
 258                 }
 259         }
 260
 261         public void displayState()
 262         {
 263                 try
 264                 {
 265                         new LogicUIStandaloneGUI(logicModel, new DefaultRenderPreferences()).run();
 266                         logicModel.setRedrawHandler(null);
 267                 }
 268                 catch (Exception e)
 269                 {
 270                         e.printStackTrace();
 271                 }
 272         }
 273
 274         public enum DebugState
 275         {
 276                 NO_DEBUG, DEBUG_AT_PERFORMANCE_COST;
 277         }
 278 }