Examples of ptolemy.data.ArrayToken

ptolemy.data.ArrayToken
A token that contains an array of tokens. The operations between arrays are defined pointwise, and require that the lengths of the arrays are the same. The elements of the ArrayToken will be converted to the least upper bound of their input types. Zero length array tokens are supported, given a prototype element to determine the type of the array. @author Yuhong Xiong, Steve Neuendorffer, Contributor: Christopher Brooks @version $Id: ArrayToken.java,v 1.119 2007/12/07 06:31:43 cxh Exp $ @since Ptolemy II 0.4 @Pt.ProposedRating Yellow (cxh) @Pt.AcceptedRating Red (cxh) nil token code

     * @param attribute The attribute that changed.
     * @exception IllegalActionException If the base class throws it.
     */
    public void attributeChanged(Attribute attribute) throws IllegalActionException  {
        if (attribute == reflectionCoefficients) {
            ArrayToken value = (ArrayToken)reflectionCoefficients.getToken();
            int valueLength = value.length();
            if ((_backward == null) || (valueLength != (_backward.length - 1))) {
                $ASSIGN$_backward(new double[valueLength + 1]);
                $ASSIGN$_backwardCache(new double[valueLength + 1]);
                $ASSIGN$_forward(new double[valueLength + 1]);
                $ASSIGN$_forwardCache(new double[valueLength + 1]);
                $ASSIGN$_reflectionCoefs(new double[valueLength]);
            }
            for (int i = 0; i < valueLength; i++) {
                $ASSIGN$_reflectionCoefs(i, ((DoubleToken)value.getElement(i)).doubleValue());
            }
        } else {
            super.attributeChanged(attribute);
        }
    }

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        offsets.setTypeEquals(new ArrayType(BaseType.DOUBLE));
        attributeChanged(offsets);
        IntToken[] defaultValues = new IntToken[2];
        defaultValues[0] = new IntToken(1);
        defaultValues[1] = new IntToken(0);
        ArrayToken defaultValueToken = new ArrayToken(BaseType.INT, defaultValues);
        values = new Parameter(this, "values", defaultValueToken);
        output.setTypeAtLeast(ArrayType.elementType(values));
        attributeChanged(values);
    }

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     * @exception IllegalActionException If the offsets array is not
     * nondecreasing and nonnegative, or it is not a row vector.
     */
    public void attributeChanged(Attribute attribute) throws IllegalActionException  {
        if (attribute == offsets) {
            ArrayToken offsetsValue = (ArrayToken)offsets.getToken();
            $ASSIGN$_offsets(new double[offsetsValue.length()]);
            double previous = 0.0;
            for (int i = 0; i < offsetsValue.length(); i++) {
                $ASSIGN$_offsets(i, ((DoubleToken)offsetsValue.getElement(i)).doubleValue());
                if (_offsets[i] < previous) {
                    throw new IllegalActionException(this, "Value of offsets is not nondecreasing " + "and nonnegative.");
                }
                previous = _offsets[i];
            }

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     * Set the current value.
     * @return True.
     * @exception IllegalActionException If there is no director.
     */
    public boolean prefire() throws IllegalActionException  {
        ArrayToken val = (ArrayToken)(values.getToken());
        if ((val == null) || (val.length() <= _phase)) {
            throw new IllegalActionException(this, "Offsets and values parameters lengths do not match.");
        }
        $ASSIGN$_currentValue(val.getElement(_phase));
        return true;
    }

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     * @exception IllegalActionException If this method is invoked
     * with an unrecognized parameter.
     */
    public void attributeChanged(Attribute attribute) throws IllegalActionException  {
        if (attribute == numerator) {
            ArrayToken numeratorValue = (ArrayToken)numerator.getToken();
            $ASSIGN$_numerator(numeratorValue.arrayValue());
        } else if (attribute == denominator) {
            ArrayToken denominatorValue = (ArrayToken)denominator.getToken();
            $ASSIGN$_denominator(denominatorValue.arrayValue());
            if (!_denominator[0].isEqualTo(_denominator[0].one()).booleanValue()) {
                try {
                    MessageHandler.warning("First denominator value is required to be 1. " + "Using 1.");
                } catch (CancelException ex) {
                    throw new IllegalActionException(this, "Canceled parameter change.");

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                            for (int j = 0; j < ((int[]) field.get(obj)).length; j++) {
                                toks[j] = new IntToken(
                                        ((int[]) field.get(obj))[j]);
                            }


                            port.send(0, new ArrayToken(BaseType.INT, toks));
                        } catch (IllegalAccessException ex) {
                            throw new IllegalActionException(this, ex, "Type '"
                                    + typ + "' is not castable");
                        }
                    } else if (typ.equals("class [D")) {
                        try {
                            Token[] toks = new Token[((double[]) field.get(obj)).length];


                            for (int j = 0; j < ((double[]) field.get(obj)).length; j++) {
                                toks[j] = new DoubleToken(((double[]) field
                                        .get(obj))[j]);
                            }


                            port.send(0, new ArrayToken(toks));
                        } catch (IllegalAccessException ex) {
                            throw new IllegalActionException(this, ex, "Type '"
                                    + typ + "' is not castable");
                        }
                    } else {

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     * @exception IllegalActionException If the indexes vector is not
     * increasing and nonnegative, or the indexes is not a row vector.
     */
    public void attributeChanged(Attribute attribute) throws IllegalActionException  {
        if (attribute == indexes) {
            ArrayToken indexesValue = (ArrayToken)indexes.getToken();
            $ASSIGN$_indexes(new int[indexesValue.length()]);
            int previous = 0;
            for (int i = 0; i < indexesValue.length(); i++) {
                $ASSIGN$_indexes(i, ((IntToken)indexesValue.getElement(i)).intValue());
                if (_indexes[i] < previous) {
                    throw new IllegalActionException(this, "Value of indexes is not nondecreasing " + "and nonnegative.");
                }
                previous = _indexes[i];
            }
        } else if (attribute == values) {
            try {
                ArrayToken valuesArray = (ArrayToken)values.getToken();
                Token prototype = valuesArray.getElement(0);
                $ASSIGN$_zero(prototype.zero());
            } catch (ArrayIndexOutOfBoundsException ex) {
                throw new IllegalActionException(this, "Cannot set values to an empty array.");
            } catch (ClassCastException ex) {
                throw new IllegalActionException(this, "Cannot set values to something that is not an array: " + values.getToken());

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     * do not have the same length, or if there is no director.
     */
    public void fire() throws IllegalActionException  {
        super.fire();
        int currentIndex = 0;
        ArrayToken val = (ArrayToken)values.getToken();
        if (_indexColCount < _indexes.length) {
            if (val.length() != _indexes.length) {
                throw new IllegalActionException(this, "Parameters values and indexes have " + "different lengths.  Length of values = " + val.length()+". Length of indexes = "+_indexes.length+".");
            }
            currentIndex = _indexes[_indexColCount];
            if (_iterationCount == currentIndex) {
                output.send(0, val.getElement(_indexColCount));
                $ASSIGN$_match(true);
                return;
            }
        } else {
            if (_repeatFlag) {
                $ASSIGN$_iterationCount(0);
                $ASSIGN$_indexColCount(0);
                currentIndex = _indexes[_indexColCount];
                if (_iterationCount == currentIndex) {
                    output.send(0, val.getElement(_indexColCount));
                    $ASSIGN$_match(true);
                }
                return;
            }
        }

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     * @exception IllegalActionException If there is no director.
     */
    public void fire() throws IllegalActionException  {
        super.fire();
        if ((enable.getWidth() == 0) || (enable.hasToken(0) && ((BooleanToken)enable.get(0)).booleanValue())) {
            ArrayToken valuesArray = (ArrayToken)values.getToken();
            if (_currentIndex < valuesArray.length()) {
                output.send(0, valuesArray.getElement(_currentIndex));
                $ASSIGN$_outputProduced(true);
            }
        }
    }

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     */
    public boolean postfire() throws IllegalActionException  {
        if (_outputProduced) {
            $ASSIGN$_outputProduced(false);
            $ASSIGN$SPECIAL$_currentIndex(0, 1);
            ArrayToken valuesArray = (ArrayToken)values.getToken();
            if (_currentIndex >= valuesArray.length()) {
                boolean repeatValue = ((BooleanToken)repeat.getToken()).booleanValue();
                if (repeatValue) {
                    $ASSIGN$_currentIndex(0);
                } else {
                    boolean holdLastOutputValue = ((BooleanToken)holdLastOutput.getToken()).booleanValue();
                    if (holdLastOutputValue) {
                        $ASSIGN$_currentIndex(valuesArray.length() - 1);
                    } else {
                        $ASSIGN$_currentIndex(valuesArray.length());
                    }
                }
            }
        }
        return super.postfire();

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