Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.Variable

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    @Test
    public void testSetField()
            throws Exception
    {
        CompilerContext context = new CompilerContext(BOOTSTRAP_METHOD);
        Variable point = context.declareVariable(Point.class, "point");

        assertSetPoint(context, point.setField("x", constantInt(42)));
        assertSetPoint(context, point.setField(Point.class.getField("x"), constantInt(42)));
    }
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public abstract class VariableInstruction
        implements InstructionNode
{
    public static InstructionNode loadVariable(int slot)
    {
        return new LoadVariableInstruction(new Variable("unknown", slot, ParameterizedType.type(Object.class)));
    }
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                "hashPosition",
                type(int.class),
                arg("blockIndex", int.class),
                arg("blockPosition", int.class));

        Variable resultVariable = hashPositionMethod.getCompilerContext().declareVariable(int.class, "result");
        hashPositionMethod.getBody().push(0).putVariable(resultVariable);

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));
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                "hashRow",
                type(int.class),
                arg("position", int.class),
                arg("blocks", com.facebook.presto.spi.block.Block[].class));

        Variable resultVariable = hashPositionMethod.getCompilerContext().declareVariable(int.class, "result");
        hashPositionMethod.getBody().push(0).putVariable(resultVariable);

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));
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                arg("rightBlockPosition", int.class));

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));

            Variable blockIndex = compilerContext.getVariable("leftBlockIndex");
            ByteCodeExpression leftBlock = compilerContext
                    .getVariable("this")
                    .getField(joinChannelFields.get(index))
                    .invoke("get", Object.class, blockIndex)
                    .cast(com.facebook.presto.spi.block.Block.class);
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                type(int.class),
                arg("pagesIndex", PagesIndex.class),
                arg("leftPosition", int.class),
                arg("rightPosition", int.class));

        Variable valueAddresses = context.declareVariable(LongArrayList.class, "valueAddresses");
        compareToMethod
                .getBody()
                .comment("LongArrayList valueAddresses = pagesIndex.valueAddresses")
                .append(valueAddresses.set(context.getVariable("pagesIndex").invoke("getValueAddresses", LongArrayList.class)));

        Variable leftPageAddress = context.declareVariable(long.class, "leftPageAddress");
        compareToMethod
                .getBody()
                .comment("long leftPageAddress = valueAddresses.getLong(leftPosition)")
                .append(leftPageAddress.set(valueAddresses.invoke("getLong", long.class, context.getVariable("leftPosition"))));

        Variable leftBlockIndex = context.declareVariable(int.class, "leftBlockIndex");
        compareToMethod
                .getBody()
                .comment("int leftBlockIndex = decodeSliceIndex(leftPageAddress)")
                .append(leftBlockIndex.set(invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, leftPageAddress)));

        Variable leftBlockPosition = context.declareVariable(int.class, "leftBlockPosition");
        compareToMethod
                .getBody()
                .comment("int leftBlockPosition = decodePosition(leftPageAddress)")
                .append(leftBlockPosition.set(invokeStatic(SyntheticAddress.class, "decodePosition", int.class, leftPageAddress)));

        Variable rightPageAddress = context.declareVariable(long.class, "rightPageAddress");
        compareToMethod
                .getBody()
                .comment("long rightPageAddress = valueAddresses.getLong(rightPosition);")
                .append(rightPageAddress.set(valueAddresses.invoke("getLong", long.class, context.getVariable("rightPosition"))));

        Variable rightBlockIndex = context.declareVariable(int.class, "rightBlockIndex");
        compareToMethod
                .getBody()
                .comment("int rightBlockIndex = decodeSliceIndex(rightPageAddress)")
                .append(rightBlockIndex.set(invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, rightPageAddress)));

        Variable rightBlockPosition = context.declareVariable(int.class, "rightBlockPosition");
        compareToMethod
                .getBody()
                .comment("int rightBlockPosition = decodePosition(rightPageAddress)")
                .append(rightBlockPosition.set(invokeStatic(SyntheticAddress.class, "decodePosition", int.class, rightPageAddress)));

        for (int i = 0; i < sortChannels.size(); i++) {
            int sortChannel = sortChannels.get(i);
            SortOrder sortOrder = sortOrders.get(i);
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        // determine the type of the value and result
        Class<?> valueType = value.getType().getJavaType();

        // evaluate the value and store it in a variable
        LabelNode nullValue = new LabelNode("nullCondition");
        Variable tempVariable = context.createTempVariable(valueType);
        Block block = new Block(context)
                .append(valueBytecode)
                .append(ByteCodeUtils.ifWasNullClearPopAndGoto(context, nullValue, void.class, valueType))
                .putVariable(tempVariable);
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        // We should be able to insert the code to get the output variable and compute the value
        // at the right place instead of assuming they are in the stack. We should also not need to
        // use temp variables to re-shuffle the stack to the right shape before Type.writeXXX is called
        // Unfortunately, because of the assumptions made by try_cast, we can't get around it yet.
        // TODO: clean up once try_cast is fixed
        Variable tempValue = context.createTempVariable(type.getJavaType());
        Variable tempOutput = context.createTempVariable(BlockBuilder.class);
        return new Block(context)
                .comment("if (wasNull)")
                .append(new IfStatement.IfStatementBuilder(context)
                        .condition(new Block(context).getVariable(wasNullVariable))
                        .ifTrue(new Block(context)
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        if (fields.size() == 1) {
            generatePrimitiveDeserializer(deserializerBody, getSetter(clazz, fields.get(0)));
        }
        else {
            Variable slice = compilerContext.declareVariable(Slice.class, "slice");
            deserializerBody.comment("Slice slice = block.getSlice(index, 0, block.getLength(index));")
                    .getVariable("block")
                    .getVariable("index")
                    .push(0)
                    .getVariable("block")
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        if (fields.size() == 1) {
            generatePrimitiveSerializer(serializerBody, getGetter(clazz, fields.get(0)));
        }
        else {
            Variable slice = compilerContext.declareVariable(Slice.class, "slice");
            int size = serializedSizeOf(clazz);
            serializerBody.comment("Slice slice = Slices.allocate(%d);", size)
                    .push(size)
                    .invokeStatic(Slices.class, "allocate", Slice.class, int.class)
                    .putVariable(slice);
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Related Classes of com.facebook.presto.byteCode.Variable

  • com.facebook.presto.byteCode.expression.TestSetFieldByteCodeExpression
  • com.facebook.presto.byteCode.expression.TestSetVariableByteCodeExpression
  • com.facebook.presto.byteCode.instruction.VariableInstruction
  • com.facebook.presto.operator.aggregation.AccumulatorCompiler
  • com.facebook.presto.operator.aggregation.state.StateCompiler
  • com.facebook.presto.operator.scalar.ArrayConstructor
  • com.facebook.presto.operator.scalar.MapConstructor
  • com.facebook.presto.sql.gen.ByteCodeExpressionVisitor
  • com.facebook.presto.sql.gen.ByteCodeUtils
  • com.facebook.presto.sql.gen.CursorProcessorCompiler
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