com.pdmfc.tea.runtime
Class SObjPair

java.lang.Object
  |
  +--com.pdmfc.tea.runtime.SObjPair

public class SObjPair

extends java.lang.Object

Implements a pair. A list can easily be built with this kind of objects.

Field Summary

java.lang.Object	_car The left hand side object of the pair.
java.lang.Object	_cdr The right hand side object of the pair.

Constructor Summary

SObjPair()
Builds a pair with nothing inside it.

SObjPair(java.lang.Object car, java.lang.Object cdr)
Builds a pair containing two objects.

Method Summary

java.util.Enumeration	elements() Deprecated. Use iterator().
static SObjPair	emptyList() Creates a pair representing an empty list.
java.util.Iterator	iterator() Builds an java.util.Iterator that will orderly iterator over the elements in the list whose head is this SObjPair object.
int	length() Determines the size of the list starting with this node.

Methods inherited from class java.lang.Object

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

Field Detail

_car

public java.lang.Object _car

The left hand side object of the pair.

_cdr

public java.lang.Object _cdr

The right hand side object of the pair.

Constructor Detail

SObjPair

public SObjPair()

Builds a pair with nothing inside it.

SObjPair

public SObjPair(java.lang.Object car,
                java.lang.Object cdr)

Builds a pair containing two objects.

Parameters:

car - The left hand side object.

cdr - The right hand side object.

Method Detail

emptyList

public static SObjPair emptyList()

Creates a pair representing an empty list.

Returns:

A newly created SObjPair object representing the empty list.

length

public int length()
           throws SRuntimeException

Determines the size of the list starting with this node.

Returns:

The number of nodes in the list, starting with this node.

Throws:

SRuntimeException - Thrown if the list starting with this node is not properly formed.

elements

public java.util.Enumeration elements()

Deprecated. Use iterator().

Builds an java.util.Enumeration that will orderly iterator over the elements in the list whose head is this SObjPair object.

Returns:

A newly created java.util.Enumeration object that will iterate over the list elements.

iterator

public java.util.Iterator iterator()

Builds an java.util.Iterator that will orderly iterator over the elements in the list whose head is this SObjPair object.

Returns:

A newly created java.util.Iterator object that will iterate over the list elements.