binding/mdsal-binding-dom-codec/src/main/java/org/opendaylight/mdsal/binding/dom/codec/impl/DataObjectStreamerGenerator.java

   1 /*
   2  * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.mdsal.binding.dom.codec.impl;
   9
  10 import static com.google.common.base.Verify.verify;
  11 import static java.util.Objects.requireNonNull;
  12 import static org.opendaylight.mdsal.binding.dom.codec.impl.ByteBuddyUtils.getField;
  13 import static org.opendaylight.mdsal.binding.dom.codec.impl.ByteBuddyUtils.invokeMethod;
  14 import static org.opendaylight.mdsal.binding.dom.codec.impl.ByteBuddyUtils.putField;
  15
  16 import com.google.common.collect.ImmutableList;
  17 import com.google.common.collect.ImmutableMap;
  18 import java.io.IOException;
  19 import java.lang.reflect.Method;
  20 import java.util.ArrayList;
  21 import java.util.HashMap;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.Map.Entry;
  25 import net.bytebuddy.ByteBuddy;
  26 import net.bytebuddy.description.field.FieldDescription;
  27 import net.bytebuddy.description.method.MethodDescription;
  28 import net.bytebuddy.description.type.TypeDefinition;
  29 import net.bytebuddy.description.type.TypeDefinition.Sort;
  30 import net.bytebuddy.description.type.TypeDescription;
  31 import net.bytebuddy.description.type.TypeDescription.Generic;
  32 import net.bytebuddy.dynamic.DynamicType.Builder;
  33 import net.bytebuddy.dynamic.scaffold.InstrumentedType;
  34 import net.bytebuddy.implementation.Implementation;
  35 import net.bytebuddy.implementation.Implementation.Context;
  36 import net.bytebuddy.implementation.bytecode.ByteCodeAppender;
  37 import net.bytebuddy.implementation.bytecode.Duplication;
  38 import net.bytebuddy.implementation.bytecode.StackManipulation;
  39 import net.bytebuddy.implementation.bytecode.TypeCreation;
  40 import net.bytebuddy.implementation.bytecode.constant.ClassConstant;
  41 import net.bytebuddy.implementation.bytecode.constant.IntegerConstant;
  42 import net.bytebuddy.implementation.bytecode.constant.TextConstant;
  43 import net.bytebuddy.implementation.bytecode.member.MethodInvocation;
  44 import net.bytebuddy.implementation.bytecode.member.MethodReturn;
  45 import net.bytebuddy.implementation.bytecode.member.MethodVariableAccess;
  46 import net.bytebuddy.jar.asm.MethodVisitor;
  47 import net.bytebuddy.jar.asm.Opcodes;
  48 import net.bytebuddy.matcher.ElementMatchers;
  49 import org.eclipse.jdt.annotation.Nullable;
  50 import org.opendaylight.mdsal.binding.dom.codec.api.BindingStreamEventWriter;
  51 import org.opendaylight.mdsal.binding.dom.codec.impl.NodeCodecContext.CodecContextFactory;
  52 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader;
  53 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader.ClassGenerator;
  54 import org.opendaylight.mdsal.binding.dom.codec.loader.CodecClassLoader.GeneratorResult;
  55 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingSchemaMapping;
  56 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
  57 import org.opendaylight.mdsal.binding.model.api.MethodSignature;
  58 import org.opendaylight.mdsal.binding.model.api.ParameterizedType;
  59 import org.opendaylight.mdsal.binding.model.api.Type;
  60 import org.opendaylight.yangtools.yang.binding.Augmentable;
  61 import org.opendaylight.yangtools.yang.binding.DataContainer;
  62 import org.opendaylight.yangtools.yang.binding.DataObject;
  63 import org.opendaylight.yangtools.yang.binding.Identifiable;
  64 import org.opendaylight.yangtools.yang.binding.Identifier;
  65 import org.opendaylight.yangtools.yang.model.api.AnydataSchemaNode;
  66 import org.opendaylight.yangtools.yang.model.api.AnyxmlSchemaNode;
  67 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
  68 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
  69 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  70 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
  71 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
  72 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
  73 import org.opendaylight.yangtools.yang.model.api.DocumentedNode.WithStatus;
  74 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
  75 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
  76 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
  77 import org.opendaylight.yangtools.yang.model.api.NotificationDefinition;
  78 import org.slf4j.Logger;
  79 import org.slf4j.LoggerFactory;
  80
  81 final class DataObjectStreamerGenerator<T extends DataObjectStreamer<?>> implements ClassGenerator<T> {
  82     static final String INSTANCE_FIELD = "INSTANCE";
  83
  84     private static final Logger LOG = LoggerFactory.getLogger(DataObjectStreamerGenerator.class);
  85     private static final Generic BB_VOID = TypeDefinition.Sort.describe(void.class);
  86     private static final Generic BB_DATAOBJECT = TypeDefinition.Sort.describe(DataObject.class);
  87     private static final Generic BB_DOSR = TypeDefinition.Sort.describe(DataObjectSerializerRegistry.class);
  88     private static final Generic BB_BESV = TypeDefinition.Sort.describe(BindingStreamEventWriter.class);
  89     private static final Generic BB_IOX = TypeDefinition.Sort.describe(IOException.class);
  90
  91     private static final int PUB_FINAL = Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_SYNTHETIC;
  92     private static final int PUB_CONST = Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC | Opcodes.ACC_FINAL
  93             | Opcodes.ACC_SYNTHETIC;
  94
  95     private static final Builder<?> TEMPLATE = new ByteBuddy().subclass(DataObjectStreamer.class)
  96             .modifiers(PUB_FINAL);
  97
  98     private static final StackManipulation REG = MethodVariableAccess.REFERENCE.loadFrom(1);
  99     private static final StackManipulation OBJ = MethodVariableAccess.REFERENCE.loadFrom(2);
 100     private static final StackManipulation STREAM = MethodVariableAccess.REFERENCE.loadFrom(3);
 101     private static final StackManipulation UNKNOWN_SIZE = IntegerConstant.forValue(
 102         BindingStreamEventWriter.UNKNOWN_SIZE);
 103
 104     private static final StackManipulation START_AUGMENTATION_NODE = invokeMethod(BindingStreamEventWriter.class,
 105         "startAugmentationNode", Class.class);
 106     private static final StackManipulation START_CASE = invokeMethod(BindingStreamEventWriter.class,
 107         "startCase", Class.class, int.class);
 108     private static final StackManipulation START_CONTAINER_NODE = invokeMethod(BindingStreamEventWriter.class,
 109         "startContainerNode", Class.class, int.class);
 110     private static final StackManipulation END_NODE = invokeMethod(BindingStreamEventWriter.class,
 111         "endNode");
 112
 113     // startMapEntryNode(obj.key(), UNKNOWN_SIZE);
 114     private static final StackManipulation START_MAP_ENTRY_NODE = new StackManipulation.Compound(
 115         OBJ,
 116         invokeMethod(Identifiable.class, "key"),
 117         UNKNOWN_SIZE,
 118         invokeMethod(BindingStreamEventWriter.class, "startMapEntryNode", Identifier.class, int.class));
 119
 120     // startUnkeyedListItem(UNKNOWN_SIZE);
 121     private static final StackManipulation START_UNKEYED_LIST_ITEM = new StackManipulation.Compound(
 122         UNKNOWN_SIZE,
 123         invokeMethod(BindingStreamEventWriter.class, "startUnkeyedListItem", int.class));
 124
 125     private static final StackManipulation STREAM_ANYDATA = invokeMethod(DataObjectStreamer.class,
 126         "streamAnydata", BindingStreamEventWriter.class, String.class, Object.class);
 127     private static final StackManipulation STREAM_ANYXML = invokeMethod(DataObjectStreamer.class,
 128         "streamAnyxml", BindingStreamEventWriter.class, String.class, Object.class);
 129     private static final StackManipulation STREAM_CHOICE = invokeMethod(DataObjectStreamer.class,
 130         "streamChoice", Class.class, DataObjectSerializerRegistry.class, BindingStreamEventWriter.class,
 131         DataContainer.class);
 132     private static final StackManipulation STREAM_CONTAINER = invokeMethod(DataObjectStreamer.class,
 133         "streamContainer", DataObjectStreamer.class, DataObjectSerializerRegistry.class, BindingStreamEventWriter.class,
 134         DataObject.class);
 135     private static final StackManipulation STREAM_LEAF = invokeMethod(DataObjectStreamer.class,
 136         "streamLeaf", BindingStreamEventWriter.class, String.class, Object.class);
 137     private static final StackManipulation STREAM_LEAF_LIST = invokeMethod(DataObjectStreamer.class,
 138         "streamLeafList",
 139         BindingStreamEventWriter.class, String.class, List.class);
 140     private static final StackManipulation STREAM_ORDERED_LEAF_LIST = invokeMethod(DataObjectStreamer.class,
 141         "streamOrderedLeafList", BindingStreamEventWriter.class, String.class, List.class);
 142     private static final StackManipulation STREAM_LIST = invokeMethod(DataObjectStreamer.class,
 143         "streamList", Class.class, DataObjectStreamer.class, DataObjectSerializerRegistry.class,
 144         BindingStreamEventWriter.class, List.class);
 145     private static final StackManipulation STREAM_MAP = invokeMethod(DataObjectStreamer.class,
 146         "streamMap", Class.class, DataObjectStreamer.class, DataObjectSerializerRegistry.class,
 147         BindingStreamEventWriter.class, Map.class);
 148     private static final StackManipulation STREAM_ORDERED_MAP = invokeMethod(DataObjectStreamer.class,
 149         "streamOrderedMap", Class.class, DataObjectStreamer.class, DataObjectSerializerRegistry.class,
 150         BindingStreamEventWriter.class, List.class);
 151
 152     // streamAugmentations(reg, stream, obj);
 153     private static final StackManipulation STREAM_AUGMENTATIONS = new StackManipulation.Compound(
 154         REG,
 155         STREAM,
 156         OBJ,
 157         invokeMethod(DataObjectStreamer.class, "streamAugmentations", DataObjectSerializerRegistry.class,
 158             BindingStreamEventWriter.class, Augmentable.class));
 159
 160     private final CodecContextFactory registry;
 161     private final StackManipulation startEvent;
 162     private final DataNodeContainer schema;
 163     private final Class<?> type;
 164     private final GeneratedType genType;
 165
 166     private DataObjectStreamerGenerator(final CodecContextFactory registry, final GeneratedType genType,
 167             final DataNodeContainer schema, final Class<?> type, final StackManipulation startEvent) {
 168         this.registry = requireNonNull(registry);
 169         this.genType = requireNonNull(genType);
 170         this.schema = requireNonNull(schema);
 171         this.type = requireNonNull(type);
 172         this.startEvent = requireNonNull(startEvent);
 173     }
 174
 175     static Class<? extends DataObjectStreamer<?>> generateStreamer(final CodecClassLoader loader,
 176             final CodecContextFactory registry, final Class<?> type) {
 177
 178         final Entry<GeneratedType, WithStatus> typeAndSchema = registry.getRuntimeContext().getTypeWithSchema(type);
 179         final WithStatus schema = typeAndSchema.getValue();
 180
 181         final StackManipulation startEvent;
 182         if (schema instanceof ContainerSchemaNode || schema instanceof NotificationDefinition) {
 183             startEvent = classUnknownSizeMethod(START_CONTAINER_NODE, type);
 184         } else if (schema instanceof ListSchemaNode) {
 185             startEvent = ((ListSchemaNode) schema).getKeyDefinition().isEmpty() ? START_UNKEYED_LIST_ITEM
 186                     : START_MAP_ENTRY_NODE;
 187         } else if (schema instanceof AugmentationSchemaNode) {
 188             // startAugmentationNode(Foo.class);
 189             startEvent = new StackManipulation.Compound(
 190                 ClassConstant.of(Sort.describe(type).asErasure()),
 191                 START_AUGMENTATION_NODE);
 192         } else if (schema instanceof CaseSchemaNode) {
 193             startEvent = classUnknownSizeMethod(START_CASE, type);
 194         } else {
 195             throw new UnsupportedOperationException("Schema type " + schema.getClass() + " is not supported");
 196         }
 197
 198         return loader.generateClass(type, "streamer",
 199             new DataObjectStreamerGenerator<>(registry, typeAndSchema.getKey(), (DataNodeContainer) schema, type,
 200                     startEvent));
 201     }
 202
 203     @Override
 204     public GeneratorResult<T> generateClass(final CodecClassLoader loader, final String fqcn,
 205             final Class<?> bindingInterface) {
 206         LOG.trace("Definining streamer {}", fqcn);
 207
 208         @SuppressWarnings("unchecked")
 209         Builder<T> builder = (Builder<T>) TEMPLATE.name(fqcn);
 210
 211         final ImmutableMap<String, Type> props = collectAllProperties(genType);
 212         final List<ChildStream> children = new ArrayList<>(props.size());
 213         for (final DataSchemaNode schemaChild : schema.getChildNodes()) {
 214             if (!schemaChild.isAugmenting()) {
 215                 final String getterName = BindingSchemaMapping.getGetterMethodName(schemaChild);
 216                 final Method getter;
 217                 try {
 218                     getter = type.getMethod(getterName);
 219                 } catch (NoSuchMethodException e) {
 220                     throw new IllegalStateException("Failed to find getter " + getterName, e);
 221                 }
 222
 223                 final ChildStream child = createStream(loader, props, schemaChild, getter);
 224                 if (child != null) {
 225                     children.add(child);
 226                 }
 227             }
 228         }
 229
 230         final ImmutableList.Builder<Class<?>> depBuilder = ImmutableList.builder();
 231         for (ChildStream child : children) {
 232             final Class<?> dependency = child.getDependency();
 233             if (dependency != null) {
 234                 depBuilder.add(dependency);
 235             }
 236         }
 237
 238         final GeneratorResult<T> result = GeneratorResult.of(builder
 239             .defineMethod("serialize", BB_VOID, PUB_FINAL)
 240                 .withParameters(BB_DOSR, BB_DATAOBJECT, BB_BESV)
 241                 .throwing(BB_IOX)
 242             .intercept(new SerializeImplementation(bindingInterface, startEvent, children)).make(), depBuilder.build());
 243
 244         LOG.trace("Definition of {} done", fqcn);
 245         return result;
 246     }
 247
 248     private ChildStream createStream(final CodecClassLoader loader, final ImmutableMap<String, Type> props,
 249             final DataSchemaNode childSchema, final Method getter) {
 250         if (childSchema instanceof LeafSchemaNode) {
 251             return qnameChildStream(STREAM_LEAF, getter, childSchema);
 252         }
 253         if (childSchema instanceof ContainerSchemaNode) {
 254             return containerChildStream(getter);
 255         }
 256         if (childSchema instanceof ListSchemaNode) {
 257             final String getterName = getter.getName();
 258             final Type childType = props.get(getterName);
 259             verify(childType instanceof ParameterizedType, "Unexpected type %s for %s", childType, getterName);
 260             final Type[] params = ((ParameterizedType) childType).getActualTypeArguments();
 261             final ListSchemaNode listSchema = (ListSchemaNode) childSchema;
 262             final Class<?> valueClass;
 263             if (!listSchema.isUserOrdered() && !listSchema.getKeyDefinition().isEmpty()) {
 264                 loadTypeClass(loader, params[0]);
 265                 valueClass = loadTypeClass(loader, params[1]);
 266             } else {
 267                 valueClass = loadTypeClass(loader, params[0]);
 268             }
 269
 270             return listChildStream(getter, valueClass.asSubclass(DataObject.class), listSchema);
 271         }
 272         if (childSchema instanceof ChoiceSchemaNode) {
 273             return choiceChildStream(getter);
 274         }
 275         if (childSchema instanceof AnydataSchemaNode) {
 276             return qnameChildStream(STREAM_ANYDATA, getter, childSchema);
 277         }
 278         if (childSchema instanceof AnyxmlSchemaNode) {
 279             return qnameChildStream(STREAM_ANYXML, getter, childSchema);
 280         }
 281         if (childSchema instanceof LeafListSchemaNode) {
 282             return qnameChildStream(((LeafListSchemaNode) childSchema).isUserOrdered() ? STREAM_ORDERED_LEAF_LIST
 283                     : STREAM_LEAF_LIST, getter, childSchema);
 284         }
 285
 286         LOG.debug("Ignoring {} due to unhandled schema {}", getter, childSchema);
 287         return null;
 288     }
 289
 290     private static ChildStream choiceChildStream(final Method getter) {
 291         // streamChoice(Foo.class, reg, stream, obj.getFoo());
 292         return new ChildStream(
 293             ClassConstant.of(Sort.describe(getter.getReturnType()).asErasure()),
 294             REG,
 295             STREAM,
 296             OBJ,
 297             invokeMethod(getter),
 298             STREAM_CHOICE);
 299     }
 300
 301     private ChildStream containerChildStream(final Method getter) {
 302         final Class<? extends DataObject> itemClass = getter.getReturnType().asSubclass(DataObject.class);
 303         final DataObjectStreamer<?> streamer = registry.getDataObjectSerializer(itemClass);
 304
 305         // streamContainer(FooStreamer.INSTANCE, reg, stream, obj.getFoo());
 306         return new ChildStream(streamer,
 307             streamerInstance(streamer),
 308             REG,
 309             STREAM,
 310             OBJ,
 311             invokeMethod(getter),
 312             STREAM_CONTAINER);
 313     }
 314
 315     private ChildStream listChildStream(final Method getter, final Class<? extends DataObject> itemClass,
 316             final ListSchemaNode childSchema) {
 317         final DataObjectStreamer<?> streamer = registry.getDataObjectSerializer(itemClass);
 318         final StackManipulation method;
 319         if (childSchema.getKeyDefinition().isEmpty()) {
 320             method = STREAM_LIST;
 321         } else {
 322             method = childSchema.isUserOrdered() ? STREAM_ORDERED_MAP : STREAM_MAP;
 323         }
 324
 325         // <METHOD>(Foo.class, FooStreamer.INSTACE, reg, stream, obj.getFoo());
 326         return new ChildStream(streamer,
 327             ClassConstant.of(Sort.describe(itemClass).asErasure()),
 328             streamerInstance(streamer),
 329             REG,
 330             STREAM,
 331             OBJ,
 332             invokeMethod(getter),
 333             method);
 334     }
 335
 336     private static ChildStream qnameChildStream(final StackManipulation method, final Method getter,
 337             final DataSchemaNode schema) {
 338         // <METHOD>(stream, "foo", obj.getFoo());
 339         return new ChildStream(
 340             STREAM,
 341             new TextConstant(schema.getQName().getLocalName()),
 342             OBJ,
 343             invokeMethod(getter),
 344             method);
 345     }
 346
 347     private static StackManipulation streamerInstance(final DataObjectStreamer<?> streamer) {
 348         try {
 349             return getField(streamer.getClass().getDeclaredField(INSTANCE_FIELD));
 350         } catch (NoSuchFieldException e) {
 351             throw new IllegalStateException(e);
 352         }
 353     }
 354
 355     private static StackManipulation classUnknownSizeMethod(final StackManipulation method, final Class<?> type) {
 356         // <METHOD>(Foo.class, UNKNOWN_SIZE);
 357         return new StackManipulation.Compound(
 358                 ClassConstant.of(Sort.describe(type).asErasure()),
 359                 UNKNOWN_SIZE,
 360                 method);
 361     }
 362
 363     private static ImmutableMap<String, Type> collectAllProperties(final GeneratedType type) {
 364         final Map<String, Type> props = new HashMap<>();
 365         collectAllProperties(type, props);
 366         return ImmutableMap.copyOf(props);
 367     }
 368
 369     private static void collectAllProperties(final GeneratedType type, final Map<String, Type> hashMap) {
 370         for (final MethodSignature definition : type.getMethodDefinitions()) {
 371             hashMap.put(definition.getName(), definition.getReturnType());
 372         }
 373         for (final Type parent : type.getImplements()) {
 374             if (parent instanceof GeneratedType) {
 375                 collectAllProperties((GeneratedType) parent, hashMap);
 376             }
 377         }
 378     }
 379
 380     private static Class<?> loadTypeClass(final CodecClassLoader loader, final Type type) {
 381         try {
 382             return loader.loadClass(type.getFullyQualifiedName());
 383         } catch (ClassNotFoundException e) {
 384             throw new LinkageError("Failed to load " + type, e);
 385         }
 386     }
 387
 388     private static final class SerializeImplementation implements Implementation {
 389         private final List<ChildStream> children;
 390         private final StackManipulation startEvent;
 391         private final Class<?> bindingInterface;
 392
 393         SerializeImplementation(final Class<?> bindingInterface, final StackManipulation startEvent,
 394                 final List<ChildStream> children) {
 395             this.bindingInterface = requireNonNull(bindingInterface);
 396             this.startEvent = requireNonNull(startEvent);
 397             this.children = requireNonNull(children);
 398         }
 399
 400         @Override
 401         public InstrumentedType prepare(final InstrumentedType instrumentedType) {
 402             return instrumentedType
 403                     // private static final This INSTANCE = new This();
 404                     .withField(new FieldDescription.Token(INSTANCE_FIELD, PUB_CONST, instrumentedType.asGenericType()))
 405                     .withInitializer(InitializeInstanceField.INSTANCE);
 406         }
 407
 408         @Override
 409         public ByteCodeAppender appender(final Target implementationTarget) {
 410             final List<StackManipulation> manipulations = new ArrayList<>(children.size() + 6);
 411
 412             // stream.<START_EVENT>(...);
 413             manipulations.add(STREAM);
 414             manipulations.add(startEvent);
 415
 416             // ... emit children ...
 417             manipulations.addAll(children);
 418
 419             if (Augmentable.class.isAssignableFrom(bindingInterface)) {
 420                 // streamAugmentations(reg, stream, obj);
 421                 manipulations.add(STREAM_AUGMENTATIONS);
 422             }
 423
 424             // stream.endNode();
 425             manipulations.add(STREAM);
 426             manipulations.add(END_NODE);
 427             // return;
 428             manipulations.add(MethodReturn.VOID);
 429
 430             return new ByteCodeAppender.Simple(manipulations);
 431         }
 432     }
 433
 434     private static final class ChildStream extends StackManipulation.Compound {
 435         private final @Nullable Class<?> dependency;
 436
 437         ChildStream(final StackManipulation... stackManipulation) {
 438             super(stackManipulation);
 439             dependency = null;
 440         }
 441
 442         ChildStream(final DataObjectStreamer<?> streamer, final StackManipulation... stackManipulation) {
 443             super(stackManipulation);
 444             dependency = streamer.getClass();
 445         }
 446
 447         @Nullable Class<?> getDependency() {
 448             return dependency;
 449         }
 450     }
 451
 452     private enum InitializeInstanceField implements ByteCodeAppender {
 453         INSTANCE;
 454
 455         @Override
 456         public Size apply(final MethodVisitor methodVisitor, final Context implementationContext,
 457                 final MethodDescription instrumentedMethod) {
 458             final TypeDescription instrumentedType = implementationContext.getInstrumentedType();
 459             StackManipulation.Size operandStackSize = new StackManipulation.Compound(
 460                 TypeCreation.of(instrumentedType),
 461                 Duplication.SINGLE,
 462                 MethodInvocation.invoke(instrumentedType.getDeclaredMethods()
 463                     .filter(ElementMatchers.isDefaultConstructor()).getOnly().asDefined()),
 464                 putField(instrumentedType, INSTANCE_FIELD))
 465                     .apply(methodVisitor, implementationContext);
 466             return new Size(operandStackSize.getMaximalSize(), instrumentedMethod.getStackSize());
 467         }
 468     }
 469 }