org.apache.velocity.runtime.parser.node
Interface Node

All Superinterfaces:

Node

All Known Implementing Classes:

SimpleNode

public interface Node

extends Node

All AST nodes must implement this interface. It provides basic machinery for constructing the parent and child relationships between nodes.

Method Summary

Object	childrenAccept(ParserVisitor visitor, Object data)
boolean	evaluate(InternalContextAdapter context)
Object	execute(Object o, InternalContextAdapter context)
Node	getChild(int i) This method returns a child node.
int	getColumn()
Token	getFirstToken()
int	getInfo()
Token	getLastToken()
int	getLine()
int	getType()
Object	init(InternalContextAdapter context, Object data)
boolean	isInvalid()
String	literal()
boolean	render(InternalContextAdapter context, Writer writer)
void	setInfo(int info)
void	setInvalid()
Object	value(InternalContextAdapter context)

Methods inherited from interface org.apache.velocity.runtime.parser.Node

jjtAccept, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent

Method Detail

getChild

public Node getChild(int i)

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

childrenAccept

public Object childrenAccept(ParserVisitor visitor,
                             Object data)

getFirstToken

public Token getFirstToken()

getLastToken

public Token getLastToken()

getType

public int getType()

init

public Object init(InternalContextAdapter context,
                   Object data)
            throws Exception

Throws:

Exception

evaluate

public boolean evaluate(InternalContextAdapter context)
                 throws MethodInvocationException

Throws:

MethodInvocationException

value

public Object value(InternalContextAdapter context)
             throws MethodInvocationException

Throws:

MethodInvocationException

render

public boolean render(InternalContextAdapter context,
                      Writer writer)
               throws IOException,
                      MethodInvocationException,
                      ParseErrorException,
                      ResourceNotFoundException

Throws:

IOException

MethodInvocationException

ParseErrorException

ResourceNotFoundException

execute

public Object execute(Object o,
                      InternalContextAdapter context)
               throws MethodInvocationException

Throws:

MethodInvocationException

setInfo

public void setInfo(int info)

getInfo

public int getInfo()

literal

public String literal()

setInvalid

public void setInvalid()

isInvalid

public boolean isInvalid()

getLine

public int getLine()

getColumn

public int getColumn()