calc
Class VariableCalc

java.lang.Object
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  +--calc.BaseCalc
        |
        +--calc.VariableCalc

public class VariableCalc

extends BaseCalc

Represents a Variable in the Calc-Scheme. Variables are (like Numerals) leaves in the operation tree, therefore they simply return the value which was set in setValue()

Fields inherited from class calc.BaseCalc

calculated, children, result

Constructor Summary

VariableCalc()

Method Summary

protected void	doCalculate() does nothing, since the result is already set in Constructor
int	getArgsNr() overridden by inheriting class, needed for consistency-checks
java.lang.String	getArithmeticSymbol() must be implemented for debugging purposes: returns "+" for AddCalc, etc.
boolean	getSign() Returns the sign of the variable true means positive value, false negative
void	setSign(boolean inSign) used by ExprParser if "-z" is encountered
void	setValue(Complex value) set the value of the variable.

Methods inherited from class calc.BaseCalc

calculate, clear, getChildren, insertChildren, main, result, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableCalc

public VariableCalc()

Method Detail

getArgsNr

public int getArgsNr()

Description copied from class: BaseCalc

overridden by inheriting class, needed for consistency-checks

Overrides:

getArgsNr in class BaseCalc

setValue

public void setValue(Complex value)

set the value of the variable. This method is called for every element of the definition lattice, when the Values are calculated

getSign

public boolean getSign()

Returns the sign of the variable true means positive value, false negative

setSign

public void setSign(boolean inSign)

used by ExprParser if "-z" is encountered

getArithmeticSymbol

public java.lang.String getArithmeticSymbol()

Description copied from class: BaseCalc

must be implemented for debugging purposes: returns "+" for AddCalc, etc.

Overrides:

getArithmeticSymbol in class BaseCalc

doCalculate

protected void doCalculate()

does nothing, since the result is already set in Constructor

Overrides:

doCalculate in class BaseCalc