com.groovyj.jgprog.functions
Class If

java.lang.Object
  |
  +--com.groovyj.jgprog.Function
        |
        +--com.groovyj.jgprog.functions.If

All Implemented Interfaces:

java.io.Serializable

public class If

extends Function

implements java.io.Serializable

The if function. Allowed to be of any type. It has three children, the first of which must be boolean. The other two children must be of the same type as this node. If the first child evaluates to true, the return value of the first child is used as the return value of this node, otherwise the second child is used.

Copyright (c) 2000 Robert Baruch. This code is released under the GNU General Public License (GPL).

Version:

$Id: If.java,v 1.1 2000/10/12 15:19:39 groovyjava Exp $

Author:

Robert Baruch (jgprog@sourceforge.net)

See Also:

Serialized Form

Fields inherited from class com.groovyj.jgprog.Function

arity, individual, returnType

Constructor Summary

If(Type type)
Creates an if node

Method Summary

boolean	execute_boolean(Chromosome c, int n) Executes this node as a boolean.
double	execute_double(Chromosome c, int n) Executes this node as a double.
float	execute_float(Chromosome c, int n) Executes this node as a float.
int	execute_int(Chromosome c, int n) Executes this node as an integer.
long	execute_long(Chromosome c, int n) Executes this node as a long.
java.lang.Object	execute_object(Chromosome c, int n) Executes this node as an object.
void	execute_void(Chromosome c, int n) Executes this node, returning nothing.
Type	getChildType(int i) Gets the type of node allowed form the given child number.
java.lang.String	getName() Gets the name of this node.

Methods inherited from class com.groovyj.jgprog.Function

execute, getArity, getReturnType, setIndividual, setReturnType

Methods inherited from class java.lang.Object

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

Constructor Detail

If

public If(Type type)

Creates an if node

Since:

1.0

Method Detail

getName

public java.lang.String getName()

Description copied from class: Function

Gets the name of this node. Must be overridden in subclasses.

Overrides:

getName in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the name of this node.

execute_boolean

public boolean execute_boolean(Chromosome c,
                               int n)

Description copied from class: Function

Executes this node as a boolean.

Overrides:

execute_boolean in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the boolean return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not boolean

execute_void

public void execute_void(Chromosome c,
                         int n)

Description copied from class: Function

Executes this node, returning nothing.

Overrides:

execute_void in class Function

Following copied from class: com.groovyj.jgprog.Function

Throws:

UnsupportedOperationException - if the type of this node is not void

execute_int

public int execute_int(Chromosome c,
                       int n)

Description copied from class: Function

Executes this node as an integer.

Overrides:

execute_int in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the integer return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not integer

execute_long

public long execute_long(Chromosome c,
                         int n)

Description copied from class: Function

Executes this node as a long.

Overrides:

execute_long in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the long return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not long

execute_float

public float execute_float(Chromosome c,
                           int n)

Description copied from class: Function

Executes this node as a float.

Overrides:

execute_float in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the float return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not float

execute_double

public double execute_double(Chromosome c,
                             int n)

Description copied from class: Function

Executes this node as a double.

Overrides:

execute_double in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the double return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not double

execute_object

public java.lang.Object execute_object(Chromosome c,
                                       int n)

Description copied from class: Function

Executes this node as an object.

Overrides:

execute_object in class Function

Following copied from class: com.groovyj.jgprog.Function

Returns:

the object return value of this node

Throws:

UnsupportedOperationException - if the type of this node is not object

getChildType

public Type getChildType(int i)

Description copied from class: Function

Gets the type of node allowed form the given child number. Must be overridden in subclasses.

Overrides:

getChildType in class Function

Following copied from class: com.groovyj.jgprog.Function

Parameters:

i - the child number

Returns:

the type of node allowed for that child