Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.CompilerContext.declareVariable()

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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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        projectionMethod.comment("Projection: %s", projection.toString());

        // generate body code
        CompilerContext context = projectionMethod.getCompilerContext();
        context.declareVariable(type(boolean.class), "wasNull");
        Block getSessionByteCode = new Block(context).pushThis().getField(classDefinition.getType(), "session", type(ConnectorSession.class));

        ByteCodeNode body = compileExpression(callSiteBinder, projection, sourceIsCursor, context, getSessionByteCode);

        Type projectionType = projection.getType();
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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)));
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        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"))));
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        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)));
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        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)));
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        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"))));
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        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)));
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        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)));
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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)
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