net.sf.arise.piji
Class ListNode

java.lang.Object
  |
  +--net.sf.arise.piji.AbstractNode
        |
        +--net.sf.arise.piji.ListNode

All Implemented Interfaces:

Expression, java.io.Serializable

public final class ListNode

extends AbstractNode

A class describing a tree node with children in a Scheme tree

Author:

Kjetil Valstadsve

See Also:

Serialized Form

Constructor Summary

(package private)	ListNode(ListNodeType type) Construct a scheme node a list of subnodes
(package private)	ListNode(ListNodeType type, java.util.List nodes)

Method Summary

boolean	equals(java.lang.Object object)
java.lang.Object	evaluate(Context context) Evaluates this tree node in the given context.
Expression	get(int i)
(package private) AbstractNode	getArgumentNode(int i) Get a numbered argument node.
(package private) AbstractNode	getFunNode() Get a numbered argument node.
ListNodeType	getType()
int	hashCode()
int	size()
(package private) ListNode	sublist(int offset)
(package private) ListNode	sublist(int offset, int length)
protected void	writeToBuffer(java.lang.StringBuffer buffer, int x, boolean indent) Returns the string value of this tree node

Methods inherited from class net.sf.arise.piji.AbstractNode

toSchemeString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ListNode

ListNode(ListNodeType type)

Construct a scheme node a list of subnodes

ListNode

ListNode(ListNodeType type,
         java.util.List nodes)

Method Detail

sublist

ListNode sublist(int offset)

sublist

ListNode sublist(int offset,
                 int length)

getType

public ListNodeType getType()

size

public int size()

get

public final Expression get(int i)

getFunNode

final AbstractNode getFunNode()

Get a numbered argument node. Recall that this refers to the numbering of the child nodes preceding the first.

Returns:

Argument node alt. i

getArgumentNode

final AbstractNode getArgumentNode(int i)

Get a numbered argument node. Recall that this refers to the numbering of the child nodes preceding the first.

Parameters:

i - The number of the argument node

Returns:

Argument node alt. i

writeToBuffer

protected void writeToBuffer(java.lang.StringBuffer buffer,
                             int x,
                             boolean indent)

Returns the string value of this tree node

Specified by:

writeToBuffer in class AbstractNode

Parameters:

x - Used to set the indentation for printing, enabling proper tree structuring of the output

Returns:

A string describing the tree

equals

public final boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

evaluate

public final java.lang.Object evaluate(Context context)
                                throws java.lang.Throwable

Evaluates this tree node in the given context. Evaluates the first child node to a function, then applies it to the remaining child nodes.

Parameters:

context - The context to evaluate in

Returns:

The value of the tree

Throws:

EvaluationException - Thrown iff something bad happens

java.lang.Throwable - iff the evaluation goes awry