org.simulator.sbml.astnode
Class ASTNodeValue

java.lang.Object
  org.simulator.sbml.astnode.ASTNodeValue

Direct Known Subclasses:

CompartmentOrParameterValue, DivideValue, FunctionValue, IntegerValue, LocalParameterValue, MinusValue, NamedValue, PlusValue, PowerValue, ReactionValue, RootFunctionValue, SpeciesReferenceValue, SpeciesValue, TimesValue

public class ASTNodeValue
extends Object

This class can compute and store the interpreted value (double or boolean) of an ASTNode at the current time. A new computation is only done if the time has changed. So the computation is time-efficient.

Since:

1.0

Version:

$Rev: 205 $

Author:

Roland Keller

Field Summary

protected boolean	alreadyProcessed Flag that tells whether a calculation of the value has already been done (important in the case of constant values)
protected boolean	booleanValue Boolean value of the node (if the type of the value is boolean)
protected ASTNodeValue[]	children The ASTNodeObjects of the child nodes of the corresponding ASTNode
protected int	denominator The denominator of the corresponding ASTNode
protected double	doubleValue Double value of the node (if the type of the value is double)
protected int	exponent The exponent of the corresponding ASTNode
protected ASTNodeInterpreter	interpreter The interpreter for calculating the value
protected boolean	isConstant Flag that is true if the value of the ASTNode is constant.
protected boolean	isDouble Flag that is true if the value has double as type and false if the value is boolean
protected boolean	isInfinite Flag that is true if the value is positive/negative infinity
protected ASTNodeValue	leftChild The ASTNodeObject of the left child of the corresponding ASTNode
static Logger	logger A Logger for this class.
protected double	mantissa The mantissa of the corresponding ASTNode
protected String	name The name of the corresponding ASTNode
protected ASTNode	node The ASTNode this object is referring to
protected ASTNode.Type	nodeType The node type of the corresponding ASTNode
protected int	numChildren The number of children of the corresponding ASTNode
protected int	numerator The numerator of the corresponding ASTNode
protected double	real The real value of the corresponding ASTNode
protected ASTNodeValue	rightChild The ASTNodeObject of the right child of the corresponding ASTNode
protected double	time The time of the last computation
protected String	units The units of the corresponding ASTNode

Constructor Summary

ASTNodeValue(ASTNodeInterpreter interpreter, ASTNode node)

Method Summary

boolean	compileBoolean(double time) Computes the boolean value if the time has changed and otherwise returns the already computed value
double	compileDouble(double time) Computes the double value if the time has changed and otherwise returns the already computed value
protected void	computeBooleanValue() Computes the boolean value of the node.
protected void	computeDoubleValue() Computes the double value of the node.
boolean	getConstant()
String	getName() Returns the name of the corresponding ASTNode.
ASTNode	getNode()
double	getTime()
Object	getValue(double time) Returns the value as an object (double or boolean)
boolean	isName() Returns true if the corresponding ASTNode is of type name.
void	reset() Resets the node
void	setTime(double time)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

time

protected double time

The time of the last computation

isConstant

protected boolean isConstant

Flag that is true if the value of the ASTNode is constant.

isInfinite

protected boolean isInfinite

Flag that is true if the value is positive/negative infinity

booleanValue

protected boolean booleanValue

Boolean value of the node (if the type of the value is boolean)

doubleValue

protected double doubleValue

Double value of the node (if the type of the value is double)

isDouble

protected boolean isDouble

Flag that is true if the value has double as type and false if the value is boolean

node

protected ASTNode node

The ASTNode this object is referring to

nodeType

protected ASTNode.Type nodeType

The node type of the corresponding ASTNode

children

protected ASTNodeValue[] children

The ASTNodeObjects of the child nodes of the corresponding ASTNode

leftChild

protected ASTNodeValue leftChild

The ASTNodeObject of the left child of the corresponding ASTNode

rightChild

protected ASTNodeValue rightChild

The ASTNodeObject of the right child of the corresponding ASTNode

name

protected String name

The name of the corresponding ASTNode

numChildren

protected int numChildren

The number of children of the corresponding ASTNode

alreadyProcessed

protected boolean alreadyProcessed

Flag that tells whether a calculation of the value has already been done (important in the case of constant values)

interpreter

protected ASTNodeInterpreter interpreter

The interpreter for calculating the value

real

protected double real

The real value of the corresponding ASTNode

mantissa

protected double mantissa

The mantissa of the corresponding ASTNode

exponent

protected int exponent

The exponent of the corresponding ASTNode

numerator

protected int numerator

The numerator of the corresponding ASTNode

denominator

protected int denominator

The denominator of the corresponding ASTNode

units

protected String units

The units of the corresponding ASTNode

logger

public static final Logger logger

A Logger for this class.

Constructor Detail

ASTNodeValue

public ASTNodeValue(ASTNodeInterpreter interpreter,
                    ASTNode node)

Parameters:

interpreter -

node -

Method Detail

reset

public void reset()

Resets the node

getTime

public double getTime()

Returns:

time the time of the last computation of the value

setTime

public void setTime(double time)

Parameters:

time -

getConstant

public boolean getConstant()

Returns:

constant?

getNode

public ASTNode getNode()

Returns:

node the corresponding ASTNode

getValue

public Object getValue(double time)

Returns the value as an object (double or boolean)

Parameters:

time -

Returns:

value the double or boolean value of the node

compileDouble

public double compileDouble(double time)

Computes the double value if the time has changed and otherwise returns the already computed value

Parameters:

time -

Returns:

doubleValue the double value of the node

compileBoolean

public boolean compileBoolean(double time)

Computes the boolean value if the time has changed and otherwise returns the already computed value

Parameters:

time -

Returns:

booleanValue the boolean value of the node

computeDoubleValue

protected void computeDoubleValue()

Computes the double value of the node.

computeBooleanValue

protected void computeBooleanValue()

Computes the boolean value of the node.

isName

public boolean isName()

Returns true if the corresponding ASTNode is of type name.

Returns:

name?

getName

public String getName()

Returns the name of the corresponding ASTNode.

Returns:

name