com.singularsys.jep.parser
Class SimpleNode

java.lang.Object
  com.singularsys.jep.parser.SimpleNode

All Implemented Interfaces:

Node

Direct Known Subclasses:

ASTConstant, ASTFunNode, ASTStart, ASTVarNode

public abstract class SimpleNode
extends java.lang.Object
implements Node

Nested Class Summary

Nested classes/interfaces inherited from interface com.singularsys.jep.parser.Node

Node.HookKey

Field Summary

protected Node[]	children
protected int	id
protected Node.HookKey[]	keys
protected Node	parent
protected Parser	parser
protected java.lang.Object[]	vals

Constructor Summary

SimpleNode(int i)

SimpleNode(Parser p, int i)

Method Summary

java.util.Iterator<Node>	childIterator() Returns an Iterator which iterates over the children of the Node.
java.lang.Iterable<Node>	children() Returns an Iterable object which can be used in a for/in loop.
java.lang.Object	childrenAccept(ParserVisitor visitor, java.lang.Object data) Accept the visitor.
void	dump(java.lang.String prefix)
java.lang.Object	getHook(Node.HookKey key) Get the object associated with the key
int	getId() Returns the id of the node (for simpler identification).
java.util.Collection<Node.HookKey>	hookKeys() Get all the keys defined for this node.
java.lang.Object	jjtAccept(ParserVisitor visitor, java.lang.Object data) Accept the visitor.
void	jjtAddChild(Node n, int i) This method tells the node to add its argument to the node's list of children.
void	jjtClose() This method is called after all the child nodes have been added.
Node	jjtGetChild(int i) This method returns a child node.
int	jjtGetNumChildren() Return the number of children the node has.
Node	jjtGetParent()
void	jjtOpen() This method is called after the node has been made the current node.
void	jjtSetParent(Node n) This pair of methods are used to inform the node of its parent.
java.lang.Object	removeHook(Node.HookKey key) Remove the key
java.lang.Object	setHook(Node.HookKey key, java.lang.Object hook) Set the data associated with a given key
java.lang.String	toString(java.lang.String prefix)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.singularsys.jep.parser.Node

getName, getOperator, getPFMC, getValue, getVar

Field Detail

parent

protected Node parent

children

protected Node[] children

id

protected int id

parser

protected Parser parser

keys

protected Node.HookKey[] keys

vals

protected java.lang.Object[] vals

Constructor Detail

SimpleNode

public SimpleNode(int i)

SimpleNode

public SimpleNode(Parser p,
                  int i)

Method Detail

jjtOpen

public void jjtOpen()

Description copied from interface: Node

This method is called after the node has been made the current node. It indicates that child nodes can now be added to it.

Specified by:

jjtOpen in interface Node

jjtClose

public void jjtClose()

Description copied from interface: Node

This method is called after all the child nodes have been added.

Specified by:

jjtClose in interface Node

jjtSetParent

public void jjtSetParent(Node n)

Description copied from interface: Node

This pair of methods are used to inform the node of its parent.

Specified by:

jjtSetParent in interface Node

jjtGetParent

public Node jjtGetParent()

Specified by:

jjtGetParent in interface Node

jjtAddChild

public void jjtAddChild(Node n,
                        int i)

Description copied from interface: Node

This method tells the node to add its argument to the node's list of children.

Specified by:

jjtAddChild in interface Node

jjtGetChild

public Node jjtGetChild(int i)

Description copied from interface: Node

This method returns a child node. The children are numbered from zero, left to right.

Specified by:

jjtGetChild in interface Node

jjtGetNumChildren

public int jjtGetNumChildren()

Description copied from interface: Node

Return the number of children the node has.

Specified by:

jjtGetNumChildren in interface Node

jjtAccept

public java.lang.Object jjtAccept(ParserVisitor visitor,
                                  java.lang.Object data)
                           throws JepException

Accept the visitor.

Specified by:

jjtAccept in interface Node

Throws:

ParseException

JepException

childrenAccept

public java.lang.Object childrenAccept(ParserVisitor visitor,
                                       java.lang.Object data)
                                throws JepException

Accept the visitor.

Throws:

JepException

toString

public java.lang.String toString(java.lang.String prefix)

dump

public void dump(java.lang.String prefix)

getId

public int getId()

Returns the id of the node (for simpler identification).

Specified by:

getId in interface Node

getHook

public java.lang.Object getHook(Node.HookKey key)

Description copied from interface: Node

Get the object associated with the key

Specified by:

getHook in interface Node

Returns:

the object associated with the key

setHook

public java.lang.Object setHook(Node.HookKey key,
                                java.lang.Object hook)

Description copied from interface: Node

Set the data associated with a given key

Specified by:

setHook in interface Node

Parameters:

key - defining the type of data

hook - actual object

Returns:

previous object associated with the key

hookKeys

public java.util.Collection<Node.HookKey> hookKeys()

Description copied from interface: Node

Get all the keys defined for this node.

Specified by:

hookKeys in interface Node

Returns:

all the keys

removeHook

public java.lang.Object removeHook(Node.HookKey key)

Description copied from interface: Node

Remove the key

Specified by:

removeHook in interface Node

Returns:

the object which was associated with the key

childIterator

public java.util.Iterator<Node> childIterator()

Returns an Iterator which iterates over the children of the Node. The remove method is unsupported.

Specified by:

childIterator in interface Node

Returns:

a new Iterator

children

public java.lang.Iterable<Node> children()

Returns an Iterable object which can be used in a for/in loop.

 for(Node child:node.children()) {
  ...
 }
 

Specified by:

children in interface Node