Examples of ptolemy.data.ScalarToken

ptolemy.data.ScalarToken
Abstract base class for tokens that contain a scalar. This base class extends the Token class to properly implement type conversion and the units portion of the standard operations for scalar tokens. It also adds methods for querying the natural ordering between scalars.
This class has a number of protected abstract methods that subclasses must implement. These methods need only implement the numerical portion of the operation between two tokens of the same type. This base class will handle the conversion of tokens from different types to the same type before calling the protected method, and the proper computation of the units of the returned token afterwards.
In general, any instance of a scalar token may be optionally associated with a set of units. In the arithmetic methods add(), modulo(), and subtract(), the two operands must have the same units. Otherwise, an exception will be thrown. In the methods multiply() and divide(), the units of the resulting token will be computed automatically. IMPORTANT: The protected methods implemented in derived classes are expected to return a new token in the case of multiply and divide. This new token will automatically have its units set correctly by this base class implementation. Certain cases, such as multiplication by one, cannot be optimized to simply return an the input token without performing the multiplication, since the units of the result may be different than the units of either input token. @author Yuhong Xiong, Mudit Goel, Steve Neuendorffer @version $Id: ScalarToken.java,v 1.116 2008/01/24 00:33:57 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (neuendor) @Pt.AcceptedRating Green (yuhong)

     * @exception IllegalActionException If there is no director.
     */
    public void fire() throws IllegalActionException  {
        super.fire();
        if (_nextPort.hasToken(0)) {
            ScalarToken readToken = (ScalarToken)_nextPort.get(0);
            if (_debugging) {
                _debug("Read input token from " + _nextPort.getName()+" with value "+readToken);
            }
            if (_recordedToken == null) {
                $ASSIGN$_tentativeRecordedToken(readToken);
                $ASSIGN$_tentativeReadFromA(true);
                $ASSIGN$_tentativeNextPort(inputB);
            } else {
                if ((readToken.isLessThan(_recordedToken)).booleanValue()) {
                    output.send(0, readToken);
                    if (_debugging) {
                        _debug("Sent output token with value " + readToken);
                    }
                    if (_nextPort == inputA) {

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            // unlike other scalars.
            if ((leftToken instanceof ScalarToken)
                    && (rightToken instanceof ScalarToken)
                    && !(leftToken instanceof BooleanToken)) {
                // handle the relations like x == 2.0
                ScalarToken difference = (ScalarToken) leftToken
                        .subtract(rightToken);
                if (((BooleanToken) result).booleanValue()) {
                    _relationType = RelationType.EQUAL_INEQUAL;
                } else {
                    if (difference.doubleValue() < 0) {
                        _relationType = RelationType.LESS_THAN;
                    } else {
                        _relationType = RelationType.GREATER_THAN;
                    }
                }
                _difference = difference.doubleValue();
            } else {
                // handle the relations like x == true, x == "str", or x!= false
                if (((BooleanToken) result).booleanValue()) {
                    _relationType = RelationType.TRUE;
                } else {
                    _relationType = RelationType.FALSE;
                }
                _difference = 0.0;
            }
        } else {
            // If the operator is neither about equal nor not-equal relations,
            // both tokens must be scalar tokens.
            if (!((leftToken instanceof ScalarToken) && (rightToken instanceof ScalarToken))) {
                throw new IllegalActionException("The " + operator.image
                        + " operator can only be applied between scalars.");
            }
            ScalarToken leftScalar = (ScalarToken) leftToken;
            ScalarToken rightScalar = (ScalarToken) rightToken;
            // A relation needs strictly satisfied.
            if (operator.kind == PtParserConstants.GTE) {
                result = leftScalar.isLessThan(rightScalar).not();
            } else if (operator.kind == PtParserConstants.GT) {
                result = rightScalar.isLessThan(leftScalar);
            } else if (operator.kind == PtParserConstants.LTE) {
                result = rightScalar.isLessThan(leftScalar).not();
            } else if (operator.kind == PtParserConstants.LT) {
                result = leftScalar.isLessThan(rightScalar);
            } else {
                throw new IllegalActionException("Invalid operation "
                        + operator.image + " between "

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     *  @exception IllegalActionException If there is no director.
     */
    public void fire() throws IllegalActionException {
        super.fire();
        if (input.hasToken(0)) {
            ScalarToken in = (ScalarToken) input.get(0);
            output.send(0, in.absolute());
        }
    }

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     *  produce no output.
     *  @exception IllegalActionException If there is no director.
     */
    public void fire() throws IllegalActionException {
        super.fire();
        ScalarToken result = null;
        ScalarToken resultMagnitude = null;
        ScalarToken inMagnitude = null;
        int channelNum = -1;


        for (int i = 0; i < input.getWidth(); i++) {
            if (input.hasToken(i)) {
                ScalarToken in = (ScalarToken) input.get(i);


                if (in.getType().equals(BaseType.COMPLEX)) {
                    // If we have a complex, we use the absolute value
                    // for comparison, but save output the initial input
                    // for output at the end.
                    inMagnitude = in.absolute();
                } else {
                    inMagnitude = in;
                }


                if (result == null) {

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            RecordToken defaultPropertiesValue = (RecordToken) defaultProperties
                    .getToken();


            // Type of the field must be convertible to double, but
            // need not actually be a double.
            ScalarToken field = (ScalarToken) defaultPropertiesValue
                    .get("range");
            range = field.doubleValue();
        }


        boolean result = (_distanceBetween(source, destination) <= range);


        if (result) {

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        } else if (temporaryAttribute instanceof Variable) {
            Variable weightAttribute = (Variable) temporaryAttribute;
            Token weightToken = weightAttribute.getToken();


            if (weightToken instanceof ScalarToken) {
                ScalarToken weightScalarToken = (ScalarToken) weightToken;
                return weightScalarToken.intValue();
            }
            return 0;
        } else {
            _debug(" something wrong with the edge");
            return 0;

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        // default properties and to apply registered transformers.
        RecordToken merged = super.transformProperties(properties, source,
                destination);


        // Get the transmit power.
        ScalarToken transmitPower = (ScalarToken) merged.get("power");


        // Evaluate the power loss factor, which will have been updated
        // with the new value of "distance."
        double powerPropagationFactorValue = ((DoubleToken) powerPropagationFactor
                .getToken()).doubleValue();


        // Calculate the receive power.
        double receivePower = transmitPower.doubleValue()
                * powerPropagationFactorValue;


        // Create a record token with the receive power.
        String[] names = { "power" };
        Token[] values = { new DoubleToken(receivePower) };

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            throw new IllegalActionException("Inputs to DotProduct have "
                    + "no elements.");
        }


        Token dotProd = null;
        ScalarToken currentTerm;


        for (int i = 0; i < array1.length; i++) {
            currentTerm = (ScalarToken) array1[i].multiply(array2[i]);


            if (dotProd == null) {

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            RecordToken defaultPropertiesValue = (RecordToken) defaultProperties
                    .getToken();


            // Type of the field must be convertible to double, but
            // need not actually be a double.
            ScalarToken field = (ScalarToken) defaultPropertiesValue
                    .get("range");
            range = field.doubleValue();
        }


        boolean result = (_distanceBetween(source, destination) <= range);


        // Whether a port is in range depends on the

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     *  output.  If there is no input, then produce no output.
     *  @exception IllegalActionException If there is no director.
     */
    public void fire() throws IllegalActionException {
        super.fire();
        ScalarToken result = null;
        ScalarToken resultMagnitude = null;
        ScalarToken inMagnitude = null;
        int channelNum = -1;


        for (int i = 0; i < input.getWidth(); i++) {
            if (input.hasToken(i)) {
                ScalarToken in = (ScalarToken) input.get(i);


                if (in.getType().equals(BaseType.COMPLEX)) {
                    // If we have a complex, we use the absolute value
                    // for comparison, but save output the initial input
                    // for output at the end.
                    inMagnitude = in.absolute();
                } else {
                    inMagnitude = in;
                }


                if (result == null) {

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