bsh

Class SimpleNode

java.lang.Object

bsh.SimpleNode

All Implemented Interfaces:

Node, java.io.Serializable, java.util.Iterator<Node>, java.util.ListIterator<Node>

Direct Known Subclasses:

BSHAutoCloseable, BSHEnumConstant, BSHLabeledStatement, BSHLiteral, BSHMultiCatch, BSHPackageDeclaration, BSHTryWithResources

public class SimpleNode
extends java.lang.Object
implements Node, java.io.Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Node[]	children
protected int	id
protected Node	parent
protected Parser	parser

Fields inherited from interface bsh.Node

JAVACODE

Constructor Summary

Constructors

Constructor and Description
SimpleNode(int i) Default constructor supplying the node with its type id.

Method Summary

Modifier and Type	Method and Description
void	add(Node e)
void	dump(java.lang.String prefix) Dump the children hierarchy.
java.lang.Object	eval(CallStack callstack, Interpreter interpreter) This is the general signature for evaluation of a node.
int	getId() Return the node type ID.
int	getLineNumber() Get the line number of the starting token
java.lang.String	getSourceFile() Get the name of the source file (or more generally source) of the text from which this node was parsed.
java.lang.String	getText() Get the text of the tokens comprising this node.
boolean	hasNext()
boolean	hasPrevious()
void	jjtAddChild(Node n, int i) Add argument to the list of children.
void	jjtClose() Called after all the child nodes have been added.
Node	jjtGetChild(int i) Returns the child node at the given index.
Node[]	jjtGetChildren() Return the list of child nodes..
int	jjtGetNumChildren() Return the number of children the node has.
Node	jjtGetParent() Return node parent.
void	jjtOpen() Called after the node has been made the current node.
void	jjtSetParent(Node n) Inform the node of its parent.
Node	next()
int	nextIndex()
Node	previous()
int	previousIndex()
void	remove()
void	set(Node e)
void	setSourceFile(java.lang.String sourceFile) Set the name of the source file (or more generally source) of the text from which this node was parsed.
java.lang.String	toString()
java.lang.String	toString(java.lang.String prefix) Overloaded toString with prefix used by dump.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

parent

protected Node parent

children

protected Node[] children

id

protected int id

parser

protected Parser parser

Constructor Detail

SimpleNode

public SimpleNode(int i)

Default constructor supplying the node with its type id.

Parameters:

i - type index of ParserTreeConstants.jjtNodeName

Method Detail

hasPrevious

public boolean hasPrevious()

Specified by:

hasPrevious in interface java.util.ListIterator<Node>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<Node>

Specified by:

hasNext in interface java.util.ListIterator<Node>

nextIndex

public int nextIndex()

Specified by:

nextIndex in interface java.util.ListIterator<Node>

previousIndex

public int previousIndex()

Specified by:

previousIndex in interface java.util.ListIterator<Node>

next

public Node next()

Specified by:

next in interface java.util.Iterator<Node>

Specified by:

next in interface java.util.ListIterator<Node>

previous

public Node previous()

Specified by:

previous in interface java.util.ListIterator<Node>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<Node>

Specified by:

remove in interface java.util.ListIterator<Node>

set

public void set(Node e)

Specified by:

set in interface java.util.ListIterator<Node>

add

public void add(Node e)

Specified by:

add in interface java.util.ListIterator<Node>

jjtOpen

public void jjtOpen()

Called after the node has been made the current node. Indicates that child nodes can now be added to it.

Specified by:

jjtOpen in interface Node

jjtClose

public void jjtClose()

Called after all the child nodes have been added.

Specified by:

jjtClose in interface Node

jjtSetParent

public void jjtSetParent(Node n)

Inform the node of its parent.

Specified by:

jjtSetParent in interface Node

jjtGetParent

public Node jjtGetParent()

Return node parent.

Specified by:

jjtGetParent in interface Node

Returns:

parent node

jjtAddChild

public void jjtAddChild(Node n,
                        int i)

Add argument to the list of children.

Specified by:

jjtAddChild in interface Node

Parameters:

n - the child node to add

i - index of child node

jjtGetChild

public Node jjtGetChild(int i)

Returns the child node at the given index. The children are numbered from zero, left to right.

Specified by:

jjtGetChild in interface Node

Parameters:

i - child index

Returns:

the node at index

jjtGetChildren

public Node[] jjtGetChildren()

Return the list of child nodes..

Specified by:

jjtGetChildren in interface Node

Returns:

children array or zero length Node array

jjtGetNumChildren

public int jjtGetNumChildren()

Return the number of children the node has.

Specified by:

jjtGetNumChildren in interface Node

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

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

Overloaded toString with prefix used by dump.

Specified by:

toString in interface Node

Parameters:

prefix - a prefix string

Returns:

toString with prefix

dump

public void dump(java.lang.String prefix)

Dump the children hierarchy.

Specified by:

dump in interface Node

Parameters:

prefix - a prefix string

eval

public java.lang.Object eval(CallStack callstack,
                             Interpreter interpreter)
                      throws EvalError

This is the general signature for evaluation of a node.

Specified by:

eval in interface Node

Parameters:

callstack - evaluation call stack

interpreter - evaluation interpreter

Returns:

result from evaluation

Throws:

EvalError - if an evaluation error occurred

setSourceFile

public void setSourceFile(java.lang.String sourceFile)

Set the name of the source file (or more generally source) of the text from which this node was parsed.

Specified by:

setSourceFile in interface Node

Parameters:

sourceFile - source

getSourceFile

public java.lang.String getSourceFile()

Get the name of the source file (or more generally source) of the text from which this node was parsed.

Specified by:

getSourceFile in interface Node

Returns:

source or parent's source or if no source found

getLineNumber

public int getLineNumber()

Get the line number of the starting token

Specified by:

getLineNumber in interface Node

Returns:

line number

getText

public java.lang.String getText()

Get the text of the tokens comprising this node.

Specified by:

getText in interface Node

Returns:

token text

getId

public int getId()

Return the node type ID.

Specified by:

getId in interface Node