Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.Variable

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            Variable sampleWeightsBlock,
            boolean grouped,
            boolean acceptNulls)
    {
        // For-loop over rows
        Variable positionVariable = context.declareVariable(int.class, "position");
        Variable sampleWeightVariable = context.declareVariable(long.class, "sampleWeight");
        Variable rowsVariable = context.declareVariable(int.class, "rows");

        Block block = new Block(context)
                .getVariable("page")
                .invokeVirtual(Page.class, "getPositionCount", int.class)
                .putVariable(rowsVariable)
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    {
        CompilerContext context = new CompilerContext(null);

        Block body = declareAddIntermediate(definition, grouped, context);

        Variable scratchStateVariable = context.declareVariable(singleStateClass, "scratchState");
        Variable positionVariable = context.declareVariable(int.class, "position");

        body.comment("scratchState = stateFactory.createSingleState();")
                .pushThis()
                .getField(stateFactoryField)
                .invokeInterface(AccumulatorStateFactory.class, "createSingleState", Object.class)
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        if (grouped) {
            generateEnsureCapacity(stateField, body);
        }

        Variable positionVariable = context.declareVariable(int.class, "position");

        Block loopBody = new Block(context)
                .comment("<intermediate>(state, ...)")
                .pushThis()
                .getField(stateField);
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    // Generates a for-loop with a local variable named "position" defined, with the current position in the block,
    // loopBody will only be executed for non-null positions in the Block
    private static Block generateBlockNonNullPositionForLoop(CompilerContext context, Variable positionVariable, Block loopBody)
    {
        Variable rowsVariable = context.declareVariable(int.class, "rows");

        Block block = new Block(context)
                .getVariable("block")
                .invokeInterface(com.facebook.presto.spi.block.Block.class, "getPositionCount", int.class)
                .putVariable(rowsVariable);
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                arg("page", com.facebook.presto.operator.Page.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

        Variable positionVariable = compilerContext.declareVariable(int.class, "position");

        Variable rowsVariable = compilerContext.declareVariable(int.class, "rows");
        filterAndProjectMethod.getBody()
                .comment("int rows = page.getPositionCount();")
                .getVariable("page")
                .invokeVirtual(com.facebook.presto.operator.Page.class, "getPositionCount", int.class)
                .putVariable(rowsVariable);

        List<Integer> allInputChannels = getInputChannels(Iterables.concat(projections, ImmutableList.of(filter)));
        for (int channel : allInputChannels) {
            Variable blockVariable = compilerContext.declareVariable(com.facebook.presto.spi.block.Block.class, "block_" + channel);
            filterAndProjectMethod.getBody()
                    .comment("Block %s = page.getBlock(%s);", blockVariable.getName(), channel)
                    .getVariable("page")
                    .push(channel)
                    .invokeVirtual(com.facebook.presto.operator.Page.class, "getBlock", com.facebook.presto.spi.block.Block.class, int.class)
                    .putVariable(blockVariable);
        }
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                arg("cursor", RecordCursor.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

        Variable completedPositionsVariable = compilerContext.declareVariable(int.class, "completedPositions");
        filterAndProjectMethod.getBody()
                .comment("int completedPositions = 0;")
                .putVariable(completedPositionsVariable, 0);

        //
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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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            LabelNode matchLabel,
            LabelNode noMatchLabel,
            Collection<ByteCodeNode> testValues,
            boolean checkForNulls)
    {
        Variable caseWasNull = null;
        if (checkForNulls) {
            caseWasNull = context.createTempVariable(boolean.class);
        }

        Block caseBlock = new Block(context)
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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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    @Test
    public void testGetField()
            throws Exception
    {
        CompilerContext context = new CompilerContext(BOOTSTRAP_METHOD);
        Variable point = context.declareVariable(Point.class, "point");
        ByteCodeExpression setPoint = point.set(newInstance(Point.class, constantInt(3), constantInt(7)));

        assertEquals(setPoint.toString(), "point = new Point(3, 7);");

        Block block = new Block(context)
                .append(setPoint)
                .append(point.ret());

        assertByteCodeNode(block, type(Point.class), new Point(3, 7));
    }
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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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