Package com.facebook.presto.byteCode

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

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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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                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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        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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