Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.Block.comment()

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                        .comment("output.append(<doubleStackValue>);")
                        .invokeVirtual(BlockBuilder.class, "append", BlockBuilder.class, double.class)
                        .pop();
            }
            else if (body.getType() == Slice.class) {
                notNullBlock
                        .comment("output.append(<sliceStackValue>);")
                        .invokeVirtual(BlockBuilder.class, "append", BlockBuilder.class, Slice.class)
                        .pop();
            }
            else {
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        Object value = constant.getValue();
        Class<?> javaType = constant.getType().getJavaType();

        Block block = new Block(context);
        if (value == null) {
            return block.comment("constant null")
                    .putVariable("wasNull", true)
                    .pushJavaDefault(javaType);
        }

        // use LDC for primitives (boolean, short, int, long, float, double)
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                    .putVariable("wasNull", true)
                    .pushJavaDefault(javaType);
        }

        // use LDC for primitives (boolean, short, int, long, float, double)
        block.comment("constant " + constant.getType().getName());
        if (javaType == boolean.class) {
            return block.append(loadBoolean((Boolean) value));
        }
        if (javaType == byte.class || javaType == short.class || javaType == int.class) {
            return block.append(loadInt(((Number) value).intValue()));
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                .getBody()
                .comment("super();")
                .pushThis()
                .invokeConstructor(Object.class);

        constructor.comment("Set channel fields");
        for (int index = 0; index < channelFields.size(); index++) {
            constructor
                    .pushThis()
                    .getVariable("channels")
                    .push(index)
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                    .invokeInterface(List.class, "get", Object.class, int.class)
                    .checkCast(type(List.class, com.facebook.presto.spi.block.Block.class))
                    .putField(channelFields.get(index));
        }

        constructor.comment("Set join channel fields");
        for (int index = 0; index < joinChannelFields.size(); index++) {
            constructor
                    .pushThis()
                    .getVariable("channels")
                    .push(joinChannels.get(index))
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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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            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);

            for (StateField field : fields) {
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                    .putVariable(slice);

            for (StateField field : fields) {
                generateSerializeFieldToSlice(serializerBody, slice, getGetter(clazz, field), offsetOfField(field, fields));
            }
            serializerBody.comment("out.appendSlice(slice);")
                    .getVariable("out")
                    .getVariable(slice)
                    .invokeInterface(BlockBuilder.class, "appendSlice", BlockBuilder.class, Slice.class);
        }
        serializerBody.ret();
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        Block getEstimatedSize = definition.declareMethod(new CompilerContext(null), a(PUBLIC), "getEstimatedSize", type(long.class))
                .getBody()
                .comment("long size = 0;")
                .push(0L);
        for (FieldDefinition field : fieldDefinitions) {
            getEstimatedSize
                    .comment("size += %s.sizeOf();", field.getName())
                    .pushThis()
                    .getField(field)
                    .invokeVirtual(field.getType(), "sizeOf", type(long.class))
                    .longAdd();
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                    .pushThis()
                    .getField(field)
                    .invokeVirtual(field.getType(), "sizeOf", type(long.class))
                    .longAdd();
        }
        getEstimatedSize.comment("return size;");
        getEstimatedSize.retLong();

        return defineClass(definition, clazz, classLoader);
    }
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