: Class MemInt

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gpsys.primitives
Class MemInt

java.lang.Object
  |
  +--gpsys.Primitive
        |
        +--gpsys.Terminal
              |
              +--gpsys.primitives.MemInt

public class MemInt
extends Terminal

	MEM_INT MemInt

MemInt is a Terminal that implements indexed memory of INT type. The primitives MemGet and MemSet must be used to get and set any of the locations of the memory.

Version:: $Revision: 1.1 $, $Date: 2000/07/05 16:24:33 $
Author:: Adil Qureshi
Department of Computer Science,

University College London,

Gower St,

London WC1E 6BT,

UK.
See Also:: Type, Primitive, Terminal, gpsys.MemGet, gpsys.MemSet, Serialized Form

Field Summary
`(package private) int[]`	`memory` The array used to implement the memory.

Fields inherited from class gpsys.Primitive

type

Constructor Summary
`MemInt(int size)` Construct indexed memory of the specified size.

Method Summary
`java.lang.Object`	`evaluateObject(Individual i)` Evaluation of indexed memory just returns a reference to the memory.
`int`	`get(int index)` Gets the value of the specified memory location.
`Primitive`	`instance()` Creates a copy of this Terminal.
`void`	`reset(int index)` Sets the specified memory location to the default value (0).
`int`	`set(int index, int value)` Sets the specified memory location to the specified value.
`java.lang.String`	`toString()` Creates a String representing this Terminal.

Methods inherited from class gpsys.Terminal

evaluateBoolean, 
evaluateByte, 
evaluateChar, 
evaluateDouble, 
evaluateFloat, 
evaluateInt, 
evaluateLong, 
evaluateShort

Methods inherited from class java.lang.Object

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

Field Detail

memory

int[] memory

The array used to implement the memory.

Constructor Detail

MemInt

public MemInt(int size)

Construct indexed memory of the specified size.

Parameters:: size - The number memory locations needed.

Method Detail

evaluateObject

public final java.lang.Object evaluateObject(Individual i)
                                      throws EvaluationException

Evaluation of indexed memory just returns a reference to the memory. This reference can then be used as a parameter to MemGet or MemSet.

Parameters:: i - The individual being evaluated.
Returns:: A reference to this indexed memory object.
Throws:: EvaluationException - If there is an evaluation failure.
Overrides:: evaluateObject in class Terminal

reset

public final void reset(int index)

Sets the specified memory location to the default value (0).

Parameters:: index - The index of the memory location to be reset.

set

public final int set(int index,
                     int value)

Sets the specified memory location to the specified value.

Parameters:: index - The index of the memory location to be set.; value - The value to be assigned to the memory location.
Returns:: The value assigned to the specified memory location, if the index was valid (within range), and 0 otherwise.

get

public final int get(int index)

Gets the value of the specified memory location.

Parameters:: index - The index of the memory location to be read.
Returns:: The value of the specified memory location, if the index was valid (within range), and 0 otherwise.

instance

public final Primitive instance()

Creates a copy of this Terminal.

Returns:: Actaully a reference to the same Terminal since there is no change in instance variables required.
Overrides:: instance in class Primitive

toString

public java.lang.String toString()

Creates a String representing this Terminal.

Returns:: A String containing the name of this Terminal.
Overrides:: toString in class Primitive