org.vesalainen.grammar.math

Class AbstractMathStateMachine

java.lang.Object

org.vesalainen.util.AbstractStateMachine<BooleanMathExpression,org.vesalainen.util.AbstractStateMachine.State>

org.vesalainen.grammar.math.AbstractMathStateMachine

Direct Known Subclasses:

SimpleMathStateMachine

public abstract class AbstractMathStateMachine
extends org.vesalainen.util.AbstractStateMachine<BooleanMathExpression,org.vesalainen.util.AbstractStateMachine.State>

AbstractMathStateMachine extends AbstractStateMachine by using boolean math expressions as conditions.

Implementing class defines variables except $startTime, $elapsedTime, $stateStartTime and $stateElapsedTime which are defined by this class.

Author:

tkv

See Also:

MathExpressionParser, AbstractStateMachine.getStartTime(), AbstractStateMachine.getElapsedTime(), AbstractStateMachine.getStateStartTime(), AbstractStateMachine.getStateElapsedTime()

Nested Class Summary

Nested classes/interfaces inherited from class org.vesalainen.util.AbstractStateMachine

org.vesalainen.util.AbstractStateMachine.State

Field Summary

Fields

Modifier and Type	Field and Description
static String	ELAPSED_TIME
static String	START_TIME
static String	STATE_ELAPSED_TIME
static String	STATE_START_TIME

Constructor Summary

Constructors

Constructor and Description
AbstractMathStateMachine(String start)
AbstractMathStateMachine(String start, boolean useDegrees)
AbstractMathStateMachine(String start, java.util.function.Supplier<java.time.Clock> clockSupplier, boolean useDegrees)

Method Summary

Modifier and Type	Method and Description
void	addTransition(String from, String condition, String to)
void	evaluate()
Set<String>	getCurrentVariables() Returns a set of variables used in current state.
protected abstract double	getVariable(String identifier) Returns the current value of given variable.
protected abstract void	register(Set<String> variables) This method is called before evaluation for information of variables that may need to be registered.
protected abstract void	unregister(Set<String> variables) This method is called after evaluation for information of variables that can be unregistered.

Methods inherited from class org.vesalainen.util.AbstractStateMachine

addState, addState, addState, addState, addTransition, getCurrentConditions, getCurrentState, getElapsedTime, getStartTime, getStateElapsedTime, getStateStartTime

Methods inherited from class java.lang.Object

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

Field Detail

START_TIME

public static final String START_TIME

See Also:

Constant Field Values

ELAPSED_TIME

public static final String ELAPSED_TIME

See Also:

Constant Field Values

STATE_START_TIME

public static final String STATE_START_TIME

See Also:

Constant Field Values

STATE_ELAPSED_TIME

public static final String STATE_ELAPSED_TIME

See Also:

Constant Field Values

Constructor Detail

AbstractMathStateMachine

public AbstractMathStateMachine(String start)

AbstractMathStateMachine

public AbstractMathStateMachine(String start,
                                boolean useDegrees)

AbstractMathStateMachine

public AbstractMathStateMachine(String start,
                                java.util.function.Supplier<java.time.Clock> clockSupplier,
                                boolean useDegrees)

Method Detail

addTransition

public void addTransition(String from,
                          String condition,
                          String to)

getCurrentVariables

public Set<String> getCurrentVariables()
                                throws Exception

Returns a set of variables used in current state.

Returns:

Throws:

Exception

getVariable

protected abstract double getVariable(String identifier)
                               throws IOException

Returns the current value of given variable.

Parameters:

identifier -

Returns:

Throws:

IOException

evaluate

public void evaluate()
              throws Exception

Overrides:

evaluate in class org.vesalainen.util.AbstractStateMachine<BooleanMathExpression,org.vesalainen.util.AbstractStateMachine.State>

Throws:

Exception

register

protected abstract void register(Set<String> variables)

This method is called before evaluation for information of variables that may need to be registered. Set content is valid only during this method call.

Parameters:

variables -

unregister

protected abstract void unregister(Set<String> variables)

This method is called after evaluation for information of variables that can be unregistered. Set content is valid only during this method call.

Parameters:

variables -