Package com.singularsys.jepexamples.consoles

Class PostfixEvaluationConsole

java.lang.Object

com.singularsys.jepexamples.consoles.Console

com.singularsys.jepexamples.consoles.PostfixEvaluationConsole

public class PostfixEvaluationConsole
extends Console

A console using the PostfixEvaluator to evaluate expressions.

Nested Class Summary

Nested classes/interfaces inherited from class com.singularsys.jepexamples.consoles.Console

Console.JepOutputStream, Console.JepPrintStream, Console.NodeRes, Console.SPEC_ACTION

Field Summary

Fields inherited from class com.singularsys.jepexamples.consoles.Console

altered, doubleFormat, history, jep, showHistory

Constructor Summary

Constructors

Constructor	Description
PostfixEvaluationConsole()

Method Summary

Modifier and Type	Method	Description
void	initialise()	sets up all the needed objects.
static void	main(String[] args)
Object	processEquation(Node node)	Performs the required operation on a node.
void	setEvaluator(Evaluator ev)	Sets the evaluator used.
void	setMonitor(String[] args)	Sets up monitoring of the call tree.

Methods inherited from class com.singularsys.jepexamples.consoles.Console

clearVars, finaliseCommand, getCommand, getHistory, getJep, getPrompt, handleError, inputLoop, parseEvaluate, print, printFunctionEntry, printFuns, printHelp, printHistory, printIntroText, println, printOps, printStdHelp, printVars, processCommand, run, setAlteredCommand, setFormat, setFormat, setIndexShift, showCalls, showTree, split, testSpecialCommands, toString

Methods inherited from class java.lang.Object

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

Constructor Details

PostfixEvaluationConsole

public PostfixEvaluationConsole()

Method Details

main

public static void main(String[] args)

Parameters:

args -

initialise

public void initialise()

Description copied from class: Console

sets up all the needed objects.

Overrides:

initialise in class Console

processEquation

public Object processEquation(Node node)

Description copied from class: Console

Performs the required operation on a node. Typically, evaluates the node and prints the value.

Overrides:

processEquation in class Console

Parameters:

node - Node representing expression

Returns:

The result of the calculation

setMonitor

public void setMonitor(String[] args)

Description copied from class: Console

Sets up monitoring of the call tree. Calls Console.setEvaluator(Evaluator) with a MonitoringEvaluator, sub-classes may need to override this method disable this feature.

Overrides:

setMonitor in class Console

Parameters:

args - second argument can be one of "off", "calls" or "times"

setEvaluator

public void setEvaluator(Evaluator ev)

Description copied from class: Console

Sets the evaluator used. Default method simple calls Jep.setComponent(com.singularsys.jep.JepComponent) with the evaluator.

Overrides:

setEvaluator in class Console

Parameters:

ev - the evaluator to use