Examples with StackManipulation org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation used on opensource projects

Example 51 with StackManipulation

use of org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation in project curiostack by curioswitch.

the class DoParse method setFieldValue.

/**
 * Returns the {@link StackManipulation} for setting the value of a field. This will be all the
 * elements for a repeated field.
 *
 * @param info description of the field to set.
 * @param beforeReadField jump target for before reading a field, used once this field is
 *     completed being set.
 * @param locals the method local variables
 * @param fieldsByName the instance fields
 */
private StackManipulation setFieldValue(ProtoFieldInfo info, Label beforeReadField, LocalVariables<LocalVariable> locals, Map<String, FieldDescription> fieldsByName) {
    if (info.isMapField()) {
        return setMapFieldValue(info, beforeReadField, locals, fieldsByName);
    } else {
        final StackManipulation setConcreteValue = invoke(info.setValueMethod());
        final StackManipulation setSingleValue;
        if (info.valueJavaType() == JavaType.MESSAGE) {
            setSingleValue = new StackManipulation.Compound(TypeCasting.to(new ForLoadedType(info.javaClass())), setConcreteValue);
        } else if (info.valueType() == Type.ENUM && !info.isRepeated()) {
            // For non-repeated enums, we treat unknown as the default value.
            setSingleValue = new StackManipulation.Compound(ParseSupport_mapUnknownEnumValue, setConcreteValue);
        } else {
            setSingleValue = setConcreteValue;
        }
        if (info.descriptor().isRepeated()) {
            return setRepeatedFieldValue(info, beforeReadField, locals, fieldsByName, setSingleValue);
        } else {
            // builder.setFoo(readValue());
            return new StackManipulation.Compound(locals.load(LocalVariable.builder), locals.load(LocalVariable.parser), readValue(info, fieldsByName, locals), setSingleValue, Removal.SINGLE, new Goto(beforeReadField));
        }
    }
}

Example 52 with StackManipulation

use of org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation in project curiostack by curioswitch.

the class DoParse method apply.

@Override
public Size apply(MethodVisitor methodVisitor, Context implementationContext, MethodDescription instrumentedMethod) {
    Map<String, FieldDescription> fieldsByName = CodeGenUtil.fieldsByName(implementationContext);
    List<FieldDescriptor> sortedFields = CodeGenUtil.sorted(descriptor.getFields());
    // Fields stored in order of number, so to get the highest number we take the last field.
    FieldDescriptor lastField = !sortedFields.isEmpty() ? sortedFields.get(sortedFields.size() - 1) : null;
    // Field numbers are 1 or greater so we will allocate the same size as the last field number
    // and subtract 1 when keeping track.
    int lastFieldNumber = lastField != null ? lastField.getNumber() : 0;
    int numFieldPresenceWords = lastFieldNumber / Integer.SIZE;
    if (lastFieldNumber % Integer.SIZE > 0) {
        numFieldPresenceWords++;
    }
    LocalVariable[] fieldPresenceVars = new LocalVariable[numFieldPresenceWords];
    for (int i = 0; i < numFieldPresenceWords; i++) {
        fieldPresenceVars[i] = new LocalVariable("setFieldBits" + i);
    }
    LocalVariable[] handles = Arrays.copyOf(LocalVariable.values(), LocalVariable.values().length + fieldPresenceVars.length);
    System.arraycopy(fieldPresenceVars, 0, handles, LocalVariable.values().length, fieldPresenceVars.length);
    LocalVariables.Builder<LocalVariable> localsBuilder = LocalVariables.builderForMethod(instrumentedMethod, handles).add(builderClass, LocalVariable.builder).add(String.class, LocalVariable.fieldName).add(int.class, LocalVariable.intvalue).add(int.class, LocalVariable.intMapKey).add(long.class, LocalVariable.longMapKey).add(boolean.class, LocalVariable.boolMapKey).add(String.class, LocalVariable.stringMapKey);
    for (LocalVariable fieldPresenceVar : fieldPresenceVars) {
        localsBuilder.add(int.class, fieldPresenceVar);
    }
    LocalVariables<LocalVariable> locals = localsBuilder.build();
    List<StackManipulation> stackManipulations = new ArrayList<>();
    Label beforeReadField = new Label();
    Label finished = new Label();
    // Initialize local variables for this method, e.g.,
    // void doMerge(JsonParser parser, int currentDepth, Message.Builder messageBuilder) {
    // T builder = (T) messageBuilder;
    // String fieldName = null;
    // Object fieldNumberUnboxed = null;
    // int fieldNumber = 0;
    // int setFieldBits0 = 0;
    // int setFieldBits1 = 0;
    // ...
    stackManipulations.addAll(Arrays.asList(locals.initialize(), locals.load(LocalVariable.messageBuilder), TypeCasting.to(new ForLoadedType(builderClass)), locals.store(LocalVariable.builder)));
    // Begins the loop that reads fields from the JSON, reading the field name and computing its
    // hash, e.g.,
    // ...
    // while (parser.nextValue() != ParseSupport.checkObjectEnd) {
    // fieldName = parser.getCurrentName();
    // fieldNumberUnboxed = FIELD_NUMBERS.get(fieldName):
    // if (fieldNumberUnboxed == null) {
    // ParseSupport.throwIfUnknownField(fieldName, descriptor.getFullName());
    // return
    // }
    // fieldNumber = (int) fieldNumberUnboxed;
    // ...
    stackManipulations.addAll(Arrays.asList(new SetJumpTargetLabel(beforeReadField), locals.load(LocalVariable.parser), Parser_nextValue, ParseSupport_checkObjectEnd, new IfTrue(finished), locals.load(LocalVariable.parser), Parser_getCurrentName, locals.store(LocalVariable.fieldName)));
    for (FieldDescriptor f : sortedFields) {
        Label afterNameCheck = new Label();
        Label afterField = new Label();
        ProtoFieldInfo field = new ProtoFieldInfo(f, prototype);
        int fieldNumberZeroBased = field.descriptor().getNumber() - 1;
        LocalVariable fieldPresenceVar = fieldPresenceVars[fieldNumberZeroBased / Integer.SIZE];
        int fieldPreserveVarBitIndex = fieldNumberZeroBased % Integer.SIZE;
        // if-statement for checking whether the current JSON field name matches this field, e.g.,
        // if (fieldName == String.intern(field.getName())
        // || fieldName == String.intern(field.getJsonName()) {
        // ...
        // } else if ...
        stackManipulations.addAll(Arrays.asList(locals.load(LocalVariable.fieldName), new TextConstant(field.descriptor().getJsonName()), new IfRefsEqual(afterNameCheck), locals.load(LocalVariable.fieldName), new TextConstant(field.descriptor().getName()), new IfRefsNotEqual(afterField), new SetJumpTargetLabel(afterNameCheck)));
        // Check whether we have already seen this field in the JSON, which is not allowed. e.g.,
        // setFieldBitsN = ParseSupport.throwIfFieldAlreadyWritten(
        // setFieldBitsN, 0x1 << field.getNumber() % 8);
        stackManipulations.addAll(Arrays.asList(locals.load(fieldPresenceVar), IntegerConstant.forValue(0x1 << fieldPreserveVarBitIndex), new TextConstant(field.descriptor().getFullName()), ParseSupport_throwIfFieldAlreadyWritten, locals.store(fieldPresenceVar)));
        // ParseSupport.throwIfOneofAlreadyWritten(builder.getSomeOneofCase(), field.getFullName());
        if (field.isInOneof()) {
            try {
                stackManipulations.addAll(Arrays.asList(locals.load(LocalVariable.parser), locals.load(LocalVariable.builder), invoke(builderClass.getDeclaredMethod(field.getOneOfCaseMethodName())), new TextConstant(field.descriptor().getFullName()), IntegerConstant.forValue(mustSkipNull(field.descriptor())), ParseSupport_throwIfOneofAlreadyWritten));
            } catch (NoSuchMethodException e) {
                throw new IllegalStateException("Could not find oneof case method.", e);
            }
        }
        // }
        if (mustSkipNull(field.descriptor())) {
            stackManipulations.addAll(Arrays.asList(locals.load(LocalVariable.parser), ParseSupport_checkNull, new IfTrue(beforeReadField)));
        }
        StackManipulation setValue = setFieldValue(field, beforeReadField, locals, fieldsByName);
        stackManipulations.add(setValue);
        stackManipulations.add(new SetJumpTargetLabel(afterField));
    }
    if (ignoringUnknownFields) {
        // If we found no corresponding field number, jump back to the beginning of the while loop.
        stackManipulations.add(new Goto(beforeReadField));
    } else {
        // If we found no corresponding field number, throw an exception.
        stackManipulations.addAll(Arrays.asList(locals.load(LocalVariable.fieldName), new TextConstant(descriptor.getFullName()), ParseSupport_throwIfUnknownField));
    }
    // End of the field processing while loop.
    stackManipulations.add(new SetJumpTargetLabel(finished));
    stackManipulations.add(MethodReturn.VOID);
    StackManipulation.Size operandStackSize = new StackManipulation.Compound(stackManipulations).apply(methodVisitor, implementationContext);
    return new Size(operandStackSize.getMaximalSize(), locals.stackSize());
}

Example 53 with StackManipulation

use of org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation in project curiostack by curioswitch.

the class DoParse method setMapFieldValue.

/**
 * Returns the {@link StackManipulation} for setting the value of a map field.
 *
 * <p>Roughly equivalent to:
 *
 * <pre>{@code
 * ParseSupport.parseObjectStart(parser);
 * while (!ParseSupport.checkObjectEnd(parser.currentToken())) {
 *   builder.putFoo(readKey(), readValue());
 * }
 * }</pre>
 */
private StackManipulation setMapFieldValue(ProtoFieldInfo info, Label beforeReadField, LocalVariables<LocalVariable> locals, Map<String, FieldDescription> fieldsByName) {
    final StackManipulation setConcreteValue = invoke(info.setValueMethod());
    final StackManipulation setMapEntry;
    if (info.valueJavaType() == JavaType.MESSAGE) {
        setMapEntry = new StackManipulation.Compound(TypeCasting.to(new ForLoadedType(info.javaClass())), setConcreteValue);
    } else {
        setMapEntry = setConcreteValue;
    }
    Label mapStart = new Label();
    Label afterSet = new Label();
    StackManipulation.Compound beforeReadKey = new StackManipulation.Compound(locals.load(LocalVariable.parser), ParseSupport_parseObjectStart, new SetJumpTargetLabel(mapStart), locals.load(LocalVariable.parser), Parser_currentToken, ParseSupport_checkObjectEnd, new IfTrue(beforeReadField));
    StackManipulation.Compound setValueAndPrepareForNext = new StackManipulation.Compound(setMapEntry, Removal.SINGLE, new SetJumpTargetLabel(afterSet), locals.load(LocalVariable.parser), Parser_nextToken, Removal.SINGLE, new Goto(mapStart));
    if (info.valueType() == Type.ENUM) {
        // We special-case enum since we may need to skip unknown values.
        final LocalVariable keyVar;
        switch(info.mapKeyField().valueJavaType()) {
            case INT:
                keyVar = LocalVariable.intMapKey;
                break;
            case LONG:
                keyVar = LocalVariable.longMapKey;
                break;
            case BOOLEAN:
                keyVar = LocalVariable.boolMapKey;
                break;
            case STRING:
                keyVar = LocalVariable.stringMapKey;
                break;
            default:
                throw new IllegalArgumentException("Invalid map key type");
        }
        return new StackManipulation.Compound(beforeReadKey, locals.load(LocalVariable.parser), readValue(info.mapKeyField(), fieldsByName, locals), locals.store(keyVar), locals.load(LocalVariable.parser), Parser_nextToken, Removal.SINGLE, locals.load(LocalVariable.parser), readValue(info, fieldsByName, locals), locals.store(LocalVariable.intvalue), locals.load(LocalVariable.intvalue), IntegerConstant.forValue(-1), new IfEqual(int.class, afterSet), locals.load(LocalVariable.builder), locals.load(keyVar), locals.load(LocalVariable.intvalue), setValueAndPrepareForNext);
    } else {
        return new StackManipulation.Compound(beforeReadKey, locals.load(LocalVariable.builder), locals.load(LocalVariable.parser), readValue(info.mapKeyField(), fieldsByName, locals), locals.load(LocalVariable.parser), Parser_nextToken, Removal.SINGLE, locals.load(LocalVariable.parser), readValue(info, fieldsByName, locals), setValueAndPrepareForNext);
    }
}

Example 54 with StackManipulation

use of org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation in project byte-buddy by raphw.

the class FixedValue method apply.

/**
     * Blueprint method that for applying the actual implementation.
     *
     * @param methodVisitor           The method visitor to which the implementation is applied to.
     * @param implementationContext   The implementation context for the given implementation.
     * @param instrumentedMethod      The instrumented method that is target of the implementation.
     * @param fixedValueType          A description of the type of the fixed value that is loaded by the
     *                                {@code valueLoadingInstruction}.
     * @param valueLoadingInstruction A stack manipulation that represents the loading of the fixed value onto the
     *                                operand stack.
     * @return A representation of the stack and variable array sized that are required for this implementation.
     */
protected ByteCodeAppender.Size apply(MethodVisitor methodVisitor, Context implementationContext, MethodDescription instrumentedMethod, TypeDescription.Generic fixedValueType, StackManipulation valueLoadingInstruction) {
    StackManipulation assignment = assigner.assign(fixedValueType, instrumentedMethod.getReturnType(), typing);
    if (!assignment.isValid()) {
        throw new IllegalArgumentException("Cannot return value of type " + fixedValueType + " for " + instrumentedMethod);
    }
    StackManipulation.Size stackSize = new StackManipulation.Compound(valueLoadingInstruction, assignment, MethodReturn.of(instrumentedMethod.getReturnType())).apply(methodVisitor, implementationContext);
    return new ByteCodeAppender.Size(stackSize.getMaximalSize(), instrumentedMethod.getStackSize());
}

Example 55 with StackManipulation

use of org.apache.beam.vendor.bytebuddy.v1_11_0.net.bytebuddy.implementation.bytecode.StackManipulation in project byte-buddy by raphw.

the class MethodDelegationBinderTerminationHandlerTest method testReturning.

@Test
public void testReturning() throws Exception {
    when(source.getReturnType()).thenReturn(genericSourceType);
    when(target.getReturnType()).thenReturn(genericTargetType);
    when(genericSourceType.asErasure()).thenReturn(sourceType);
    when(genericTargetType.asErasure()).thenReturn(targetType);
    when(assigner.assign(genericTargetType, genericSourceType, Assigner.Typing.STATIC)).thenReturn(stackManipulation);
    StackManipulation stackManipulation = MethodDelegationBinder.TerminationHandler.Default.RETURNING.resolve(assigner, Assigner.Typing.STATIC, source, target);
    assertThat(stackManipulation, is((StackManipulation) new StackManipulation.Compound(this.stackManipulation, MethodReturn.REFERENCE)));
    verify(assigner).assign(genericTargetType, genericSourceType, Assigner.Typing.STATIC);
}