csheets.core.formula.lang
Class ReferenceOperation

java.lang.Object
  csheets.core.formula.Operation<BinaryOperator>
      csheets.core.formula.BinaryOperation
          csheets.core.formula.lang.ReferenceOperation

All Implemented Interfaces:

Expression, Reference, Serializable, Comparable<Reference>

public class ReferenceOperation
extends BinaryOperation
implements Reference

A binary reference operation in a formula.

Author:

Einar Pehrson

See Also:

Serialized Form

Field Summary

Fields inherited from class csheets.core.formula.Operation

operator

Constructor Summary

ReferenceOperation(Reference leftOperand, RangeReference operator, Reference rightOperand)
Creates a new reference operation.

Method Summary

Object	accept(ExpressionVisitor visitor) Accepts to visit the given expression visitor.
int	compareTo(Reference reference) Compares the reference with the given reference for order.
Value	evaluate() Evaluates the expression and returns the result.
SortedSet<Cell>	getCells() Returns the cell addresses (or address) that the reference points to.
Reference	getLeftOperand() Returns the left(first) operand.
RangeReference	getOperator() Returns the operator.
Reference	getRightOperand() Returns the right(second) operand.

Methods inherited from class csheets.core.formula.BinaryOperation

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferenceOperation

public ReferenceOperation(Reference leftOperand,
                          RangeReference operator,
                          Reference rightOperand)

Creates a new reference operation.

Parameters:

leftOperand - the left(first) operand

operator - the reference operator

rightOperand - the right(second) operand

Method Detail

getCells

public SortedSet<Cell> getCells()

Description copied from interface: Reference

Returns the cell addresses (or address) that the reference points to.

Specified by:

getCells in interface Reference

Returns:

a naturally ordered set of the references' addresses

getOperator

public RangeReference getOperator()

Description copied from class: Operation

Returns the operator.

Overrides:

getOperator in class Operation<BinaryOperator>

Returns:

the operator.

getLeftOperand

public Reference getLeftOperand()

Description copied from class: BinaryOperation

Returns the left(first) operand.

Overrides:

getLeftOperand in class BinaryOperation

Returns:

an expression tree representing the operand

getRightOperand

public Reference getRightOperand()

Description copied from class: BinaryOperation

Returns the right(second) operand.

Overrides:

getRightOperand in class BinaryOperation

Returns:

an expression tree representing the operand

evaluate

public Value evaluate()

Description copied from interface: Expression

Evaluates the expression and returns the result.

Specified by:

evaluate in interface Expression

Specified by:

evaluate in interface Reference

Overrides:

evaluate in class BinaryOperation

Returns:

the result of the evaluation

accept

public Object accept(ExpressionVisitor visitor)
              throws ExpressionVisitorException

Description copied from interface: Expression

Accepts to visit the given expression visitor.

Specified by:

accept in interface Expression

Overrides:

accept in class BinaryOperation

Parameters:

visitor - the visitor

Throws:

ExpressionVisitorException

compareTo

public int compareTo(Reference reference)

Description copied from interface: Reference

Compares the reference with the given reference for order.

Specified by:

compareTo in interface Reference

Specified by:

compareTo in interface Comparable<Reference>

Parameters:

reference - the reference to be compared

Returns:

a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.