Package com.singularsys.extexamples.consoles

Class ChainedConsole

java.lang.Object

com.singularsys.jepexamples.consoles.Console

com.singularsys.extexamples.consoles.ChainedConsole

public class ChainedConsole
extends Console

A console application illustrating the chained function features in the com.singularsys.extensions.chained package.

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
ChainedConsole()

Method Summary

Modifier and Type	Method	Description
boolean	finaliseCommand(String command, Node node, Object res)	Perform any post-processing of a command after evaluation.
void	initialise()	sets up all the needed objects.
static void	main(String[] args)	Creates a new Console object and calls run()
void	printHelp()	Print help message.
void	printIntroText()	Prints introductory text.
Object	processEquation(Node node)	Performs the required operation on a node.
void	setEvaluator(Evaluator ev)	Sets the evaluator used.

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

clearVars, getCommand, getHistory, getJep, getPrompt, handleError, inputLoop, parseEvaluate, print, printFunctionEntry, printFuns, printHistory, println, printOps, printStdHelp, printVars, processCommand, run, setAlteredCommand, setFormat, setFormat, setIndexShift, setMonitor, 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

ChainedConsole

public ChainedConsole()

Method Details

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)
                       throws JepException

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

Throws:

JepException - if a Parse or evaluation error

finaliseCommand

public boolean finaliseCommand(String command,
 Node node,
 Object res)

Description copied from class: Console

Perform any post-processing of a command after evaluation.

Overrides:

finaliseCommand in class Console

Parameters:

command - the string expression

node - parsed expression

res - result of evaluation

Returns:

true, false indicates the program should exit.

printIntroText

public void printIntroText()

Description copied from class: Console

Prints introductory text.

Overrides:

printIntroText in class Console

printHelp

public void printHelp()

Description copied from class: Console

Print help message.

Overrides:

printHelp in class Console

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

main

public static void main(String[] args)

Creates a new Console object and calls run()