com.mpobjects.bdparsii.eval

Class Constant

java.lang.Object

com.mpobjects.bdparsii.eval.Constant

All Implemented Interfaces:

Expression

public final class Constant
extends Object
implements Expression

Represents a constant numeric expression.

Constructor Summary

Constructors

Constructor and Description
Constant(BigDecimal value)

Method Summary

Modifier and Type	Method and Description
BigDecimal	evaluate(MathContext mathContext) Evaluates the expression to a BigDecimal number.
boolean	isConstant() Determines the this expression is constant
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mpobjects.bdparsii.eval.Expression

evaluate, getMathContext, simplify

Constructor Detail

Constant

public Constant(BigDecimal value)

Method Detail

evaluate

public BigDecimal evaluate(MathContext mathContext)

Description copied from interface: Expression

Evaluates the expression to a BigDecimal number.

Specified by:

evaluate in interface Expression

Parameters:

mathContext - Use this math context during calculation instead of the one provided during parsing. Does not affect already simplified subexpressions.

Returns:

the double value as a result of evaluating this expression.

isConstant

public boolean isConstant()

Description copied from interface: Expression

Determines the this expression is constant

Specified by:

isConstant in interface Expression

Returns:

true if the result of evaluate will never change and does not depend on external state like variables

toString

public String toString()

Overrides:

toString in class Object