Package hec.hecmath.computation

Class TextExpression

java.lang.Object

hec.hecmath.computation.TextExpression

All Implemented Interfaces:

Constants, Evaluable, Updatable, UpdatableListener

public class TextExpression
extends Object
implements Evaluable, Constants

Nested Class Summary

Nested classes/interfaces inherited from interface hec.hecmath.computation.Constants

Constants.LogicTestOperator, Constants.MathOperator, Constants.Notation, Constants.Precedence, Constants.QualityOperator, Constants.QualityTestOperator, Constants.TextOperator, Constants.TextTestOperator, Constants.ValueTestOperator

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	allowDenormal
protected static boolean	allowDenormalByDefault
protected boolean	exceptionOnUndefined
protected static boolean	exceptionOnUndefinedByDefault
protected Evaluable	expression
protected Constants.Notation	inputNotation
protected String	inputText
protected String	result
protected boolean	stale
protected boolean	tolerateUndefined
protected static boolean	tolerateUndefinedByDefault
protected Set<UpdatableListener>	updateListeners
protected Object	updateListenersLock
protected Set<Updatable>	updateSources
protected Object	updateSourcesLock
protected VariableSet	variables

Fields inherited from interface hec.hecmath.computation.Constants

BINARY, CONSTANT, TERNARY, UNARY, VARIADIC

Constructor Summary

Constructors

Constructor	Description
TextExpression()
TextExpression(String expr)
TextExpression(String expr, VariableSet variables)

Method Summary

Modifier and Type	Method	Description
protected void	buildExpression(List<String> tokens)
void	dataUpdated(Updatable u)
double	evaluate()
String	evaluateToString()
boolean	getAllowDenormal()
static boolean	getAllowDenormalByDefault()
boolean	getExceptionOnUndefined()
static boolean	getExceptionOnUndefinedByDefault()
boolean	getTolerateUndefined()
static boolean	getTolerateUndefinedByDefault()
protected String	infixToPostfix(String infix)
protected List<String>	infixToPostfix(List<String> infix)
protected TextOperation	makeOperationFromPostfix(Stack<String> stack)
protected TextOperation	makeOperationFromPrefix(Queue<String> queue)
void	notifyListeners()
protected List<String>	parseTextExpression(String expr)
protected List<String>	parseTextExpression(String expr, Constants.Notation notation)
void	registerAsListener(Updatable u)
void	registerListener(UpdatableListener listener)
void	setAllowDenormal(boolean setting)
static void	setAllowDenormalByDefault(boolean setting)
void	setExceptionOnUndefined(boolean setting)
static void	setExceptionOnUndefinedByDefault(boolean setting)
protected void	setTextExpression(String expr)
void	setTolerateUndefined(boolean setting)
static void	setTolerateUndefinedByDefault(boolean setting)
protected String	sexpToPrefix(String sexp)
protected List<String>	sexpToPrefix(List<String> sexp)
String	toNotation(Constants.Notation notation)
String	toString()
void	unregisterAsListener()
void	unregisterAsListener(Updatable u)
void	unregisterListener(UpdatableListener listener)

Methods inherited from class java.lang.Object

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

Field Details

tolerateUndefinedByDefault

protected static boolean tolerateUndefinedByDefault

exceptionOnUndefinedByDefault

protected static boolean exceptionOnUndefinedByDefault

allowDenormalByDefault

protected static boolean allowDenormalByDefault

tolerateUndefined

protected boolean tolerateUndefined

exceptionOnUndefined

protected boolean exceptionOnUndefined

allowDenormal

protected boolean allowDenormal

inputText

protected String inputText

inputNotation

protected Constants.Notation inputNotation

expression

protected Evaluable expression

variables

protected VariableSet variables

updateListeners

protected Set<UpdatableListener> updateListeners

updateListenersLock

protected Object updateListenersLock

updateSources

protected Set<Updatable> updateSources

updateSourcesLock

protected Object updateSourcesLock

stale

protected boolean stale

result

protected String result

Constructor Details

TextExpression

public TextExpression()

TextExpression

public TextExpression(String expr)
               throws ComputationException

Throws:

ComputationException

TextExpression

public TextExpression(String expr,
 VariableSet variables)
               throws ComputationException

Throws:

ComputationException

Method Details

getTolerateUndefinedByDefault

public static boolean getTolerateUndefinedByDefault()

setTolerateUndefinedByDefault

public static void setTolerateUndefinedByDefault(boolean setting)

getExceptionOnUndefinedByDefault

public static boolean getExceptionOnUndefinedByDefault()

setExceptionOnUndefinedByDefault

public static void setExceptionOnUndefinedByDefault(boolean setting)

getAllowDenormalByDefault

public static boolean getAllowDenormalByDefault()

setAllowDenormalByDefault

public static void setAllowDenormalByDefault(boolean setting)

registerListener

public void registerListener(UpdatableListener listener)

Specified by:

registerListener in interface Updatable

unregisterListener

public void unregisterListener(UpdatableListener listener)

Specified by:

unregisterListener in interface Updatable

notifyListeners

public void notifyListeners()

Specified by:

notifyListeners in interface Updatable

dataUpdated

public void dataUpdated(Updatable u)

Specified by:

dataUpdated in interface UpdatableListener

registerAsListener

public void registerAsListener(Updatable u)

Specified by:

registerAsListener in interface UpdatableListener

unregisterAsListener

public void unregisterAsListener(Updatable u)

Specified by:

unregisterAsListener in interface UpdatableListener

unregisterAsListener

public void unregisterAsListener()

Specified by:

unregisterAsListener in interface UpdatableListener

evaluate

public double evaluate()
                throws ComputationException

Specified by:

evaluate in interface Evaluable

Throws:

ComputationException

evaluateToString

public String evaluateToString()
                        throws ComputationException

Specified by:

evaluateToString in interface Evaluable

Throws:

ComputationException

sexpToPrefix

protected String sexpToPrefix(String sexp)
                       throws ComputationException

Throws:

ComputationException

sexpToPrefix

protected List<String> sexpToPrefix(List<String> sexp)
                             throws ComputationException

Throws:

ComputationException

infixToPostfix

protected String infixToPostfix(String infix)
                         throws ComputationException

Throws:

ComputationException

infixToPostfix

protected List<String> infixToPostfix(List<String> infix)
                               throws ComputationException

Throws:

ComputationException

setTextExpression

protected void setTextExpression(String expr)
                          throws ComputationException

Throws:

ComputationException

parseTextExpression

protected List<String> parseTextExpression(String expr)
                                    throws ComputationException

Throws:

ComputationException

parseTextExpression

protected List<String> parseTextExpression(String expr,
 Constants.Notation notation)
                                    throws ComputationException

Throws:

ComputationException

makeOperationFromPostfix

protected TextOperation makeOperationFromPostfix(Stack<String> stack)
                                          throws ComputationException

Throws:

ComputationException

makeOperationFromPrefix

protected TextOperation makeOperationFromPrefix(Queue<String> queue)
                                         throws ComputationException

Throws:

ComputationException

buildExpression

protected void buildExpression(List<String> tokens)
                        throws ComputationException

Throws:

ComputationException

toNotation

public String toNotation(Constants.Notation notation)
                  throws ComputationException

Specified by:

toNotation in interface Evaluable

Throws:

ComputationException

getTolerateUndefined

public boolean getTolerateUndefined()

Specified by:

getTolerateUndefined in interface Evaluable

setTolerateUndefined

public void setTolerateUndefined(boolean setting)

Specified by:

setTolerateUndefined in interface Evaluable

getExceptionOnUndefined

public boolean getExceptionOnUndefined()

Specified by:

getExceptionOnUndefined in interface Evaluable

setExceptionOnUndefined

public void setExceptionOnUndefined(boolean setting)

Specified by:

setExceptionOnUndefined in interface Evaluable

getAllowDenormal

public boolean getAllowDenormal()

Specified by:

getAllowDenormal in interface Evaluable

setAllowDenormal

public void setAllowDenormal(boolean setting)

Specified by:

setAllowDenormal in interface Evaluable

toString

public String toString()

Specified by:

toString in interface Evaluable

Overrides:

toString in class Object