Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.LocalVariableDefinition

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                type(int.class),
                arg("pagesIndex", PagesIndex.class),
                arg("leftPosition", int.class),
                arg("rightPosition", int.class));

        LocalVariableDefinition valueAddresses = compilerContext.declareVariable(LongArrayList.class, "valueAddresses");
        compareToMethod
                .getBody()
                .comment("LongArrayList valueAddresses = pagesIndex.valueAddresses")
                .getVariable("pagesIndex")
                .invokeVirtual(PagesIndex.class, "getValueAddresses", LongArrayList.class)
                .putVariable(valueAddresses);

        LocalVariableDefinition leftPageAddress = compilerContext.declareVariable(long.class, "leftPageAddress");
        compareToMethod
                .getBody()
                .comment("long leftPageAddress = valueAddresses.getLong(leftPosition)")
                .getVariable(valueAddresses)
                .getVariable("leftPosition")
                .invokeVirtual(LongArrayList.class, "getLong", long.class, int.class)
                .putVariable(leftPageAddress);

        LocalVariableDefinition leftBlockIndex = compilerContext.declareVariable(int.class, "leftBlockIndex");
        compareToMethod
                .getBody()
                .comment("int leftBlockIndex = decodeSliceIndex(leftPageAddress)")
                .getVariable(leftPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, long.class)
                .putVariable(leftBlockIndex);

        LocalVariableDefinition leftBlockPosition = compilerContext.declareVariable(int.class, "leftBlockPosition");
        compareToMethod
                .getBody()
                .comment("int leftBlockPosition = decodePosition(leftPageAddress)")
                .getVariable(leftPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodePosition", int.class, long.class)
                .putVariable(leftBlockPosition);

        LocalVariableDefinition rightPageAddress = compilerContext.declareVariable(long.class, "rightPageAddress");
        compareToMethod
                .getBody()
                .comment("long rightPageAddress = valueAddresses.getLong(rightPosition);")
                .getVariable(valueAddresses)
                .getVariable("rightPosition")
                .invokeVirtual(LongArrayList.class, "getLong", long.class, int.class)
                .putVariable(rightPageAddress);

        LocalVariableDefinition rightBlockIndex = compilerContext.declareVariable(int.class, "rightBlockIndex");
        compareToMethod
                .getBody()
                .comment("int rightBlockIndex = decodeSliceIndex(rightPageAddress)")
                .getVariable(rightPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, long.class)
                .putVariable(rightBlockIndex);

        LocalVariableDefinition rightBlockPosition = compilerContext.declareVariable(int.class, "rightBlockPosition");
        compareToMethod
                .getBody()
                .comment("int rightBlockPosition = decodePosition(rightPageAddress)")
                .getVariable(rightPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodePosition", int.class, long.class)
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                "hashPosition",
                type(int.class),
                arg("blockIndex", int.class),
                arg("blockPosition", int.class));

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

        for (FieldDefinition joinChannelField : joinChannelFields) {
            hashPositionMethod
                    .getBody()
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        if (fields.size() == 1) {
            generatePrimitiveDeserializer(deserializerBody, getSetter(clazz, fields.get(0)));
        }
        else {
            LocalVariableDefinition slice = compilerContext.declareVariable(Slice.class, "slice");
            deserializerBody.comment("Slice slice = block.getSlice(index);")
                    .getVariable("block")
                    .getVariable("index")
                    .invokeInterface(com.facebook.presto.spi.block.Block.class, "getSlice", Slice.class, int.class)
                    .putVariable(slice);
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        if (fields.size() == 1) {
            generatePrimitiveSerializer(serializerBody, getGetter(clazz, fields.get(0)));
        }
        else {
            LocalVariableDefinition 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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                type(int.class),
                arg("pagesIndex", PagesIndex.class),
                arg("leftPosition", int.class),
                arg("rightPosition", int.class));

        LocalVariableDefinition valueAddresses = compilerContext.declareVariable(LongArrayList.class, "valueAddresses");
        compareToMethod
                .getBody()
                .comment("LongArrayList valueAddresses = pagesIndex.valueAddresses")
                .getVariable("pagesIndex")
                .invokeVirtual(PagesIndex.class, "getValueAddresses", LongArrayList.class)
                .putVariable(valueAddresses);

        LocalVariableDefinition leftPageAddress = compilerContext.declareVariable(long.class, "leftPageAddress");
        compareToMethod
                .getBody()
                .comment("long leftPageAddress = valueAddresses.getLong(leftPosition)")
                .getVariable(valueAddresses)
                .getVariable("leftPosition")
                .invokeVirtual(LongArrayList.class, "getLong", long.class, int.class)
                .putVariable(leftPageAddress);

        LocalVariableDefinition leftBlockIndex = compilerContext.declareVariable(int.class, "leftBlockIndex");
        compareToMethod
                .getBody()
                .comment("int leftBlockIndex = decodeSliceIndex(leftPageAddress)")
                .getVariable(leftPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, long.class)
                .putVariable(leftBlockIndex);

        LocalVariableDefinition leftBlockPosition = compilerContext.declareVariable(int.class, "leftBlockPosition");
        compareToMethod
                .getBody()
                .comment("int leftBlockPosition = decodePosition(leftPageAddress)")
                .getVariable(leftPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodePosition", int.class, long.class)
                .putVariable(leftBlockPosition);

        LocalVariableDefinition rightPageAddress = compilerContext.declareVariable(long.class, "rightPageAddress");
        compareToMethod
                .getBody()
                .comment("long rightPageAddress = valueAddresses.getLong(rightPosition);")
                .getVariable(valueAddresses)
                .getVariable("rightPosition")
                .invokeVirtual(LongArrayList.class, "getLong", long.class, int.class)
                .putVariable(rightPageAddress);

        LocalVariableDefinition rightBlockIndex = compilerContext.declareVariable(int.class, "rightBlockIndex");
        compareToMethod
                .getBody()
                .comment("int rightBlockIndex = decodeSliceIndex(rightPageAddress)")
                .getVariable(rightPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodeSliceIndex", int.class, long.class)
                .putVariable(rightBlockIndex);

        LocalVariableDefinition rightBlockPosition = compilerContext.declareVariable(int.class, "rightBlockPosition");
        compareToMethod
                .getBody()
                .comment("int rightBlockPosition = decodePosition(rightPageAddress)")
                .getVariable(rightPageAddress)
                .invokeStatic(SyntheticAddress.class, "decodePosition", int.class, long.class)
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                "hashPosition",
                type(int.class),
                arg("blockIndex", int.class),
                arg("blockPosition", int.class));

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

        for (FieldDefinition joinChannelField : joinChannelFields) {
            hashPositionMethod
                    .getBody()
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                arg("page", com.facebook.presto.operator.Page.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

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

        LocalVariableDefinition 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<LocalVariableDefinition> cursorVariables = new ArrayList<>();

        List<Integer> allInputChannels = getInputChannels(Iterables.concat(projections, ImmutableList.of(filter)));
        for (int channel : allInputChannels) {
            LocalVariableDefinition cursorVariable = compilerContext.declareVariable(BlockCursor.class, "cursor_" + channel);
            cursorVariables.add(cursorVariable);
            filterAndProjectMethod.getBody()
                    .comment("BlockCursor %s = page.getBlock(%s).cursor();", cursorVariable.getName(), channel)
                    .getVariable("page")
                    .push(channel)
                    .invokeVirtual(com.facebook.presto.operator.Page.class, "getBlock", com.facebook.presto.spi.block.Block.class, int.class)
                    .invokeInterface(com.facebook.presto.spi.block.Block.class, "cursor", BlockCursor.class)
                    .putVariable(cursorVariable);
        }

        //
        // for loop body
        //

        // for (position = 0; position < rows; position++)
        ForLoopBuilder forLoop = forLoopBuilder(compilerContext)
                .comment("for (position = 0; position < rows; position++)")
                .initialize(new Block(compilerContext).putVariable(positionVariable, 0))
                .condition(new Block(compilerContext)
                        .getVariable(positionVariable)
                        .getVariable(rowsVariable)
                        .invokeStatic(CompilerOperations.class, "lessThan", boolean.class, int.class, int.class))
                .update(new Block(compilerContext).incrementVariable(positionVariable, (byte) 1));

        Block forLoopBody = new Block(compilerContext);

        // cursor.advanceNextPosition()
        for (LocalVariableDefinition cursorVariable : cursorVariables) {
            forLoopBody
                    .comment("checkState(%s.advanceNextPosition());", cursorVariable.getName())
                    .getVariable(cursorVariable)
                    .invokeInterface(BlockCursor.class, "advanceNextPosition", boolean.class)
                    .invokeStatic(Preconditions.class, "checkState", void.class, boolean.class);
        }

        IfStatementBuilder ifStatement = new IfStatementBuilder(compilerContext)
                .comment("if (filter(cursors...)");
        Block condition = new Block(compilerContext);
        condition.pushThis();
        List<Integer> filterInputChannels = getInputChannels(filter);
        for (int channel : filterInputChannels) {
            condition.getVariable("cursor_" + channel);
        }
        condition.invokeVirtual(classDefinition.getType(), "filter", type(boolean.class), nCopies(filterInputChannels.size(), type(BlockCursor.class)));
        ifStatement.condition(condition);

        Block trueBlock = new Block(compilerContext);
        if (projections.isEmpty()) {
            trueBlock
                    .comment("pageBuilder.declarePosition()")
                    .getVariable("pageBuilder")
                    .invokeVirtual(PageBuilder.class, "declarePosition", void.class);
        }
        else {
            // pageBuilder.getBlockBuilder(0).append(cursor.getDouble(0);
            for (int projectionIndex = 0; projectionIndex < projections.size(); projectionIndex++) {
                trueBlock.comment("project_%s(cursors..., pageBuilder.getBlockBuilder(%s))", projectionIndex, projectionIndex);
                trueBlock.pushThis();
                List<Integer> projectionInputs = getInputChannels(projections.get(projectionIndex));
                for (int channel : projectionInputs) {
                    trueBlock.getVariable("cursor_" + channel);
                }

                // pageBuilder.getBlockBuilder(0)
                trueBlock.getVariable("pageBuilder")
                        .push(projectionIndex)
                        .invokeVirtual(PageBuilder.class, "getBlockBuilder", BlockBuilder.class, int.class);

                // project(cursor_0, cursor_1, blockBuilder)
                trueBlock.invokeVirtual(classDefinition.getType(),
                        "project_" + projectionIndex,
                        type(void.class),
                        ImmutableList.<ParameterizedType>builder().addAll(nCopies(projectionInputs.size(), type(BlockCursor.class))).add(type(BlockBuilder.class)).build());
            }
        }
        ifStatement.ifTrue(trueBlock);

        forLoopBody.append(ifStatement.build());
        filterAndProjectMethod.getBody().append(forLoop.body(forLoopBody).build());

        //
        //  Verify all cursors ended together
        //

        // checkState(!cursor.advanceNextPosition());
        for (LocalVariableDefinition cursorVariable : cursorVariables) {
            filterAndProjectMethod.getBody()
                    .comment("checkState(not(%s.advanceNextPosition))", cursorVariable.getName())
                    .getVariable(cursorVariable)
                    .invokeInterface(BlockCursor.class, "advanceNextPosition", boolean.class)
                    .invokeStatic(CompilerOperations.class, "not", boolean.class, boolean.class)
                    .invokeStatic(Preconditions.class, "checkState", void.class, boolean.class);
        }
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                arg("cursor", RecordCursor.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

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

        //
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                arg("page", com.facebook.presto.operator.Page.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

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

        LocalVariableDefinition 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<LocalVariableDefinition> cursorVariables = new ArrayList<>();

        List<Integer> inputChannels = getInputChannels(expressionTypes.keySet());
        for (int channel : inputChannels) {
            LocalVariableDefinition cursorVariable = compilerContext.declareVariable(BlockCursor.class, "cursor_" + channel);
            cursorVariables.add(cursorVariable);
            filterAndProjectMethod.getBody()
                    .comment("BlockCursor %s = page.getBlock(%s).cursor();", cursorVariable.getName(), channel)
                    .getVariable("page")
                    .push(channel)
                    .invokeVirtual(com.facebook.presto.operator.Page.class, "getBlock", com.facebook.presto.spi.block.Block.class, int.class)
                    .invokeInterface(com.facebook.presto.spi.block.Block.class, "cursor", BlockCursor.class)
                    .putVariable(cursorVariable);
        }

        //
        // for loop body
        //

        // for (position = 0; position < rows; position++)
        ForLoopBuilder forLoop = forLoopBuilder(compilerContext)
                .comment("for (position = 0; position < rows; position++)")
                .initialize(new Block(compilerContext).putVariable(positionVariable, 0))
                .condition(new Block(compilerContext)
                        .getVariable(positionVariable)
                        .getVariable(rowsVariable)
                        .invokeStatic(CompilerOperations.class, "lessThan", boolean.class, int.class, int.class))
                .update(new Block(compilerContext).incrementVariable(positionVariable, (byte) 1));

        Block forLoopBody = new Block(compilerContext);

        // cursor.advanceNextPosition()
        for (LocalVariableDefinition cursorVariable : cursorVariables) {
            forLoopBody
                    .comment("checkState(%s.advanceNextPosition());", cursorVariable.getName())
                    .getVariable(cursorVariable)
                    .invokeInterface(BlockCursor.class, "advanceNextPosition", boolean.class)
                    .invokeStatic(Preconditions.class, "checkState", void.class, boolean.class);
        }

        IfStatementBuilder ifStatement = new IfStatementBuilder(compilerContext)
                .comment("if (filter(cursors...)");
        Block condition = new Block(compilerContext);
        condition.pushThis();
        for (int channel : inputChannels) {
            condition.getVariable("cursor_" + channel);
        }
        condition.invokeVirtual(classDefinition.getType(), "filter", type(boolean.class), nCopies(inputChannels.size(), type(BlockCursor.class)));
        ifStatement.condition(condition);

        Block trueBlock = new Block(compilerContext);
        if (projections.isEmpty()) {
            trueBlock
                    .comment("pageBuilder.declarePosition()")
                    .getVariable("pageBuilder")
                    .invokeVirtual(PageBuilder.class, "declarePosition", void.class);
        }
        else {
            // pageBuilder.getBlockBuilder(0).append(cursor.getDouble(0);
            for (int projectionIndex = 0; projectionIndex < projections.size(); projectionIndex++) {
                trueBlock.comment("project_%s(cursors..., pageBuilder.getBlockBuilder(%s))", projectionIndex, projectionIndex);
                trueBlock.pushThis();
                for (int channel : inputChannels) {
                    trueBlock.getVariable("cursor_" + channel);
                }

                // pageBuilder.getBlockBuilder(0)
                trueBlock.getVariable("pageBuilder")
                        .push(projectionIndex)
                        .invokeVirtual(PageBuilder.class, "getBlockBuilder", BlockBuilder.class, int.class);

                // project(cursor_0, cursor_1, blockBuilder)
                trueBlock.invokeVirtual(classDefinition.getType(),
                        "project_" + projectionIndex,
                        type(void.class),
                        ImmutableList.<ParameterizedType>builder().addAll(nCopies(inputChannels.size(), type(BlockCursor.class))).add(type(BlockBuilder.class)).build());
            }
        }
        ifStatement.ifTrue(trueBlock);

        forLoopBody.append(ifStatement.build());
        filterAndProjectMethod.getBody().append(forLoop.body(forLoopBody).build());

        //
        //  Verify all cursors ended together
        //

        // checkState(!cursor.advanceNextPosition());
        for (LocalVariableDefinition cursorVariable : cursorVariables) {
            filterAndProjectMethod.getBody()
                    .comment("checkState(not(%s.advanceNextPosition))", cursorVariable.getName())
                    .getVariable(cursorVariable)
                    .invokeInterface(BlockCursor.class, "advanceNextPosition", boolean.class)
                    .invokeStatic(CompilerOperations.class, "not", boolean.class, boolean.class)
                    .invokeStatic(Preconditions.class, "checkState", void.class, boolean.class);
        }
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                arg("cursor", RecordCursor.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

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

        //
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