csheets.core.formula
Class FunctionCall

java.lang.Object
  csheets.core.formula.FunctionCall

All Implemented Interfaces:

Expression, Serializable

public class FunctionCall
extends Object
implements Expression

A call to a function in a formula.

Author:

Einar Pehrson

See Also:

Serialized Form

Constructor Summary

FunctionCall(Function function, Expression... args)
Creates a new function call.

Method Summary

Object	accept(ExpressionVisitor visitor) Accepts to visit the given expression visitor.
Value	evaluate() Evaluates the expression and returns the result.
Expression[]	getArguments() Returns the arguments passed to the function.
Function	getFunction() Returns the function that is called.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionCall

public FunctionCall(Function function,
                    Expression... args)
             throws IllegalFunctionCallException

Creates a new function call.

Parameters:

function - the function that is called

args - the arguments passed to the function

Throws:

IllegalFunctionCallException - if the arguments passed to the function did not match its parameters

Method Detail

evaluate

public Value evaluate()
               throws IllegalValueTypeException

Description copied from interface: Expression

Evaluates the expression and returns the result.

Specified by:

evaluate in interface Expression

Returns:

the result of the evaluation

Throws:

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

getFunction

public Function getFunction()

Returns the function that is called.

Returns:

the function that is called

getArguments

public Expression[] getArguments()

Returns the arguments passed to the function.

Returns:

the arguments passed to the function

accept

public Object accept(ExpressionVisitor visitor)

Description copied from interface: Expression

Accepts to visit the given expression visitor.

Specified by:

accept in interface Expression

Parameters:

visitor - the visitor

toString

public String toString()

Overrides:

toString in class Object