csheets.core.formula
Class UnaryOperation

java.lang.Object
  csheets.core.formula.Operation<UnaryOperator>
      csheets.core.formula.UnaryOperation

All Implemented Interfaces:

Expression, Serializable

public class UnaryOperation
extends Operation<UnaryOperator>

A unary operation in a formula.

Author:

Einar Pehrson

See Also:

Serialized Form

Field Summary

Fields inherited from class csheets.core.formula.Operation

operator

Constructor Summary

UnaryOperation(UnaryOperator operator, Expression operand)
Creates a new unary operation.

Method Summary

Object	accept(ExpressionVisitor visitor) Accepts to visit the given expression visitor.
Value	evaluate() Evaluates the expression and returns the result.
Expression	getOperand() Returns the operand.
String	toString()

Methods inherited from class csheets.core.formula.Operation

getOperator

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryOperation

public UnaryOperation(UnaryOperator operator,
                      Expression operand)

Creates a new unary operation.

Parameters:

operator - the unary operator

operand - the operand

Method Detail

evaluate

public Value evaluate()
               throws IllegalValueTypeException

Description copied from interface: Expression

Evaluates the expression and returns the result.

Returns:

the result of the evaluation

Throws:

IllegalValueTypeException - if a value of an unexpected type was encountered when evaluating the expression

getOperand

public Expression getOperand()

Returns the operand.

Returns:

an expression tree representing the operand

accept

public Object accept(ExpressionVisitor visitor)

Description copied from interface: Expression

Accepts to visit the given expression visitor.

Parameters:

visitor - the visitor

toString

public String toString()

Overrides:

toString in class Object