Examples with MethodDefinition com.facebook.presto.bytecode.MethodDefinition used on opensource projects

Example 71 with MethodDefinition

use of com.facebook.presto.bytecode.MethodDefinition in project presto by prestodb.

the class AccumulatorCompiler method generateConstructor.

private static void generateConstructor(ClassDefinition definition, FieldDefinition stateSerializerField, FieldDefinition stateFactoryField, FieldDefinition inputChannelsField, FieldDefinition maskChannelField, FieldDefinition stateField, boolean grouped) {
    Parameter stateSerializer = arg("stateSerializer", AccumulatorStateSerializer.class);
    Parameter stateFactory = arg("stateFactory", AccumulatorStateFactory.class);
    Parameter inputChannels = arg("inputChannels", type(List.class, Integer.class));
    Parameter maskChannel = arg("maskChannel", type(Optional.class, Integer.class));
    MethodDefinition method = definition.declareConstructor(a(PUBLIC), stateSerializer, stateFactory, inputChannels, maskChannel);
    BytecodeBlock body = method.getBody();
    Variable thisVariable = method.getThis();
    body.comment("super();").append(thisVariable).invokeConstructor(Object.class);
    body.append(thisVariable.setField(stateSerializerField, generateRequireNotNull(stateSerializer)));
    body.append(thisVariable.setField(stateFactoryField, generateRequireNotNull(stateFactory)));
    body.append(thisVariable.setField(inputChannelsField, generateRequireNotNull(inputChannels)));
    body.append(thisVariable.setField(maskChannelField, generateRequireNotNull(maskChannel)));
    String createState;
    if (grouped) {
        createState = "createGroupedState";
    } else {
        createState = "createSingleState";
    }
    body.append(thisVariable.setField(stateField, stateFactory.invoke(createState, Object.class).cast(stateField.getType())));
    body.ret();
}

Example 72 with MethodDefinition

use of com.facebook.presto.bytecode.MethodDefinition in project presto by prestodb.

the class AccumulatorCompiler method generateGetEstimatedSize.

private static void generateGetEstimatedSize(ClassDefinition definition, FieldDefinition stateField) {
    MethodDefinition method = definition.declareMethod(a(PUBLIC), "getEstimatedSize", type(long.class));
    BytecodeExpression state = method.getThis().getField(stateField);
    method.getBody().append(state.invoke("getEstimatedSize", long.class).ret());
}

Example 73 with MethodDefinition

use of com.facebook.presto.bytecode.MethodDefinition in project presto by prestodb.

the class MapFilterFunction method generateFilter.

private static MethodHandle generateFilter(Type keyType, Type valueType) {
    CallSiteBinder binder = new CallSiteBinder();
    MapType mapType = new MapType(keyType, valueType);
    Class<?> keyJavaType = Primitives.wrap(keyType.getJavaType());
    Class<?> valueJavaType = Primitives.wrap(valueType.getJavaType());
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName("MapFilter"), type(Object.class));
    definition.declareDefaultConstructor(a(PRIVATE));
    Parameter block = arg("block", Block.class);
    Parameter function = arg("function", MethodHandle.class);
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "filter", type(Block.class), ImmutableList.of(block, function));
    BytecodeBlock body = method.getBody();
    Scope scope = method.getScope();
    Variable positionCount = scope.declareVariable(int.class, "positionCount");
    Variable position = scope.declareVariable(int.class, "position");
    Variable blockBuilder = scope.declareVariable(BlockBuilder.class, "blockBuilder");
    Variable keyElement = scope.declareVariable(keyJavaType, "keyElement");
    Variable valueElement = scope.declareVariable(valueJavaType, "valueElement");
    Variable keep = scope.declareVariable(Boolean.class, "keep");
    // invoke block.getPositionCount()
    body.append(positionCount.set(block.invoke("getPositionCount", int.class)));
    // create the interleaved block builder
    body.append(blockBuilder.set(newInstance(InterleavedBlockBuilder.class, constantType(binder, mapType).invoke("getTypeParameters", List.class), newInstance(BlockBuilderStatus.class), positionCount)));
    SqlTypeBytecodeExpression keySqlType = constantType(binder, keyType);
    BytecodeNode loadKeyElement;
    if (!keyType.equals(UNKNOWN)) {
        // key element must be non-null
        loadKeyElement = new BytecodeBlock().append(keyElement.set(keySqlType.getValue(block, position).cast(keyJavaType)));
    } else {
        loadKeyElement = new BytecodeBlock().append(keyElement.set(constantNull(keyJavaType)));
    }
    SqlTypeBytecodeExpression valueSqlType = constantType(binder, valueType);
    BytecodeNode loadValueElement;
    if (!valueType.equals(UNKNOWN)) {
        loadValueElement = new IfStatement().condition(block.invoke("isNull", boolean.class, add(position, constantInt(1)))).ifTrue(valueElement.set(constantNull(valueJavaType))).ifFalse(valueElement.set(valueSqlType.getValue(block, add(position, constantInt(1))).cast(valueJavaType)));
    } else {
        loadValueElement = new BytecodeBlock().append(valueElement.set(constantNull(valueJavaType)));
    }
    body.append(new ForLoop().initialize(position.set(constantInt(0))).condition(lessThan(position, positionCount)).update(incrementVariable(position, (byte) 2)).body(new BytecodeBlock().append(loadKeyElement).append(loadValueElement).append(keep.set(function.invoke("invokeExact", Boolean.class, keyElement, valueElement))).append(new IfStatement("if (keep != null && keep) ...").condition(and(notEqual(keep, constantNull(Boolean.class)), keep.cast(boolean.class))).ifTrue(new BytecodeBlock().append(keySqlType.invoke("appendTo", void.class, block, position, blockBuilder)).append(valueSqlType.invoke("appendTo", void.class, block, add(position, constantInt(1)), blockBuilder))))));
    body.append(blockBuilder.invoke("build", Block.class).ret());
    Class<?> generatedClass = defineClass(definition, Object.class, binder.getBindings(), MapFilterFunction.class.getClassLoader());
    return methodHandle(generatedClass, "filter", Block.class, MethodHandle.class);
}

Example 74 with MethodDefinition

use of com.facebook.presto.bytecode.MethodDefinition in project presto by prestodb.

the class ArrayTransformFunction method generateTransform.

private static Class<?> generateTransform(Type inputType, Type outputType) {
    CallSiteBinder binder = new CallSiteBinder();
    Class<?> inputJavaType = Primitives.wrap(inputType.getJavaType());
    Class<?> outputJavaType = Primitives.wrap(outputType.getJavaType());
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), makeClassName("ArrayTransform"), type(Object.class));
    definition.declareDefaultConstructor(a(PRIVATE));
    // define createPageBuilder
    MethodDefinition createPageBuilderMethod = definition.declareMethod(a(PUBLIC, STATIC), "createPageBuilder", type(PageBuilder.class));
    createPageBuilderMethod.getBody().append(newInstance(PageBuilder.class, constantType(binder, new ArrayType(outputType)).invoke("getTypeParameters", List.class)).ret());
    // define transform method
    Parameter pageBuilder = arg("pageBuilder", PageBuilder.class);
    Parameter block = arg("block", Block.class);
    Parameter function = arg("function", MethodHandle.class);
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "transform", type(Block.class), ImmutableList.of(pageBuilder, block, function));
    BytecodeBlock body = method.getBody();
    Scope scope = method.getScope();
    Variable positionCount = scope.declareVariable(int.class, "positionCount");
    Variable position = scope.declareVariable(int.class, "position");
    Variable blockBuilder = scope.declareVariable(BlockBuilder.class, "blockBuilder");
    Variable inputElement = scope.declareVariable(inputJavaType, "inputElement");
    Variable outputElement = scope.declareVariable(outputJavaType, "outputElement");
    // invoke block.getPositionCount()
    body.append(positionCount.set(block.invoke("getPositionCount", int.class)));
    // reset page builder if it is full
    body.append(new IfStatement().condition(pageBuilder.invoke("isFull", boolean.class)).ifTrue(pageBuilder.invoke("reset", void.class)));
    // get block builder
    body.append(blockBuilder.set(pageBuilder.invoke("getBlockBuilder", BlockBuilder.class, constantInt(0))));
    BytecodeNode loadInputElement;
    if (!inputType.equals(UNKNOWN)) {
        loadInputElement = new IfStatement().condition(block.invoke("isNull", boolean.class, position)).ifTrue(inputElement.set(constantNull(inputJavaType))).ifFalse(inputElement.set(constantType(binder, inputType).getValue(block, position).cast(inputJavaType)));
    } else {
        loadInputElement = new BytecodeBlock().append(inputElement.set(constantNull(inputJavaType)));
    }
    BytecodeNode writeOutputElement;
    if (!outputType.equals(UNKNOWN)) {
        writeOutputElement = new IfStatement().condition(equal(outputElement, constantNull(outputJavaType))).ifTrue(blockBuilder.invoke("appendNull", BlockBuilder.class).pop()).ifFalse(constantType(binder, outputType).writeValue(blockBuilder, outputElement.cast(outputType.getJavaType())));
    } else {
        writeOutputElement = new BytecodeBlock().append(blockBuilder.invoke("appendNull", BlockBuilder.class).pop());
    }
    body.append(new ForLoop().initialize(position.set(constantInt(0))).condition(lessThan(position, positionCount)).update(incrementVariable(position, (byte) 1)).body(new BytecodeBlock().append(loadInputElement).append(outputElement.set(function.invoke("invokeExact", outputJavaType, inputElement))).append(writeOutputElement)));
    body.append(pageBuilder.invoke("declarePositions", void.class, positionCount));
    body.append(blockBuilder.invoke("getRegion", Block.class, subtract(blockBuilder.invoke("getPositionCount", int.class), positionCount), positionCount).ret());
    return defineClass(definition, Object.class, binder.getBindings(), ArrayTransformFunction.class.getClassLoader());
}