org.apache.velocity.runtime.parser.node
Class SimpleNode

java.lang.Object
  org.apache.velocity.runtime.parser.node.SimpleNode

All Implemented Interfaces:

Node

Direct Known Subclasses:

ASTAddNode, ASTAndNode, ASTAssignment, ASTBlock, ASTComment, ASTDirective, ASTDivNode, ASTElseIfStatement, ASTElseStatement, ASTEQNode, ASTEscape, ASTEscapedDirective, ASTExpression, ASTFalse, ASTFloatingPointLiteral, ASTGENode, ASTGTNode, ASTIdentifier, ASTIfStatement, ASTIncludeStatement, ASTIntegerLiteral, ASTIntegerRange, ASTLENode, ASTLTNode, ASTMap, ASTMethod, ASTModNode, ASTMulNode, ASTNENode, ASTNotNode, ASTObjectArray, ASTOrNode, ASTParameters, ASTprocess, ASTReference, ASTSetDirective, ASTStop, ASTStringLiteral, ASTSubtractNode, ASTText, ASTTrue, ASTVariable, ASTWord

public class SimpleNode
extends Object
implements Node

Field Summary

protected Node[]	children
protected Token	first
protected int	id
protected int	info
protected boolean	invalid
protected Token	last
protected Log	log
protected Node	parent
protected Parser	parser
protected RuntimeServices	rsvc
boolean	state

Constructor Summary

SimpleNode(int i)

SimpleNode(Parser p, int i)

Method Summary

Object	childrenAccept(ParserVisitor visitor, Object data)
void	dump(String prefix) Override this method if you want to customize how the node dumps out its children.
boolean	evaluate(InternalContextAdapter context)
Object	execute(Object o, InternalContextAdapter context)
int	getColumn()
Token	getFirstToken()
int	getInfo()
Token	getLastToken()
int	getLine()
int	getType()
Object	init(InternalContextAdapter context, Object data)
boolean	isInvalid()
Object	jjtAccept(ParserVisitor visitor, Object data)
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.
String	literal()
boolean	render(InternalContextAdapter context, Writer writer)
void	setFirstToken(Token t)
void	setInfo(int info)
void	setInvalid() Mark the node as invalid.
String	toString()
String	toString(String prefix)
Object	value(InternalContextAdapter context)

Methods inherited from class java.lang.Object

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

Field Detail

rsvc

protected RuntimeServices rsvc

log

protected Log log

parent

protected Node parent

children

protected Node[] children

id

protected int id

parser

protected Parser parser

info

protected int info

state

public boolean state

invalid

protected boolean invalid

first

protected Token first

last

protected Token last

Constructor Detail

SimpleNode

public SimpleNode(int i)

Parameters:

i -

SimpleNode

public SimpleNode(Parser p,
                  int i)

Parameters:

p -

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

See Also:

Node.jjtOpen()

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

See Also:

Node.jjtClose()

setFirstToken

public void setFirstToken(Token t)

Parameters:

t -

getFirstToken

public Token getFirstToken()

Specified by:

getFirstToken in interface Node

Returns:

The first token.

See Also:

Node.getFirstToken()

getLastToken

public Token getLastToken()

Specified by:

getLastToken in interface Node

Returns:

The last token.

See Also:

Node.getLastToken()

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

See Also:

Node.jjtSetParent(org.apache.velocity.runtime.parser.node.Node)

jjtGetParent

public Node jjtGetParent()

Specified by:

jjtGetParent in interface Node

Returns:

The node parent.

See Also:

Node.jjtGetParent()

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

See Also:

Node.jjtAddChild(org.apache.velocity.runtime.parser.node.Node, int)

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

Returns:

A child node.

See Also:

Node.jjtGetChild(int)

jjtGetNumChildren

public int jjtGetNumChildren()

Description copied from interface: Node

Return the number of children the node has.

Specified by:

jjtGetNumChildren in interface Node

Returns:

The number of children of this node.

See Also:

Node.jjtGetNumChildren()

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
                        Object data)

Specified by:

jjtAccept in interface Node

Returns:

The Node execution result object.

See Also:

Node.jjtAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)

childrenAccept

public Object childrenAccept(ParserVisitor visitor,
                             Object data)

Specified by:

childrenAccept in interface Node

Returns:

The node execution result.

See Also:

Node.childrenAccept(org.apache.velocity.runtime.parser.ParserVisitor, java.lang.Object)

toString

public String toString(String prefix)

Parameters:

prefix -

Returns:

String representation of this node.

dump

public void dump(String prefix)

Override this method if you want to customize how the node dumps out its children.

Parameters:

prefix -

literal

public String literal()

Specified by:

literal in interface Node

Returns:

A literal.

See Also:

Node.literal()

init

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

Specified by:

init in interface Node

Returns:

The init result.

Throws:

TemplateInitException

See Also:

Node.init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)

evaluate

public boolean evaluate(InternalContextAdapter context)
                 throws MethodInvocationException

Specified by:

evaluate in interface Node

Returns:

The evaluation result.

Throws:

MethodInvocationException

See Also:

Node.evaluate(org.apache.velocity.context.InternalContextAdapter)

value

public Object value(InternalContextAdapter context)
             throws MethodInvocationException

Specified by:

value in interface Node

Returns:

The node value.

Throws:

MethodInvocationException

See Also:

Node.value(org.apache.velocity.context.InternalContextAdapter)

render

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

Specified by:

render in interface Node

Returns:

True if the node rendered successfully.

Throws:

IOException

MethodInvocationException

ParseErrorException

ResourceNotFoundException

See Also:

Node.render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer)

execute

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

Specified by:

execute in interface Node

Returns:

The execution result.

Throws:

MethodInvocationException

See Also:

Node.execute(java.lang.Object, org.apache.velocity.context.InternalContextAdapter)

getType

public int getType()

Specified by:

getType in interface Node

Returns:

The NodeType.

See Also:

Node.getType()

setInfo

public void setInfo(int info)

Specified by:

setInfo in interface Node

See Also:

Node.setInfo(int)

getInfo

public int getInfo()

Specified by:

getInfo in interface Node

Returns:

The current node info.

See Also:

Node.getInfo()

setInvalid

public void setInvalid()

Description copied from interface: Node

Mark the node as invalid.

Specified by:

setInvalid in interface Node

See Also:

Node.setInvalid()

isInvalid

public boolean isInvalid()

Specified by:

isInvalid in interface Node

Returns:

True if the node is invalid.

See Also:

Node.isInvalid()

getLine

public int getLine()

Specified by:

getLine in interface Node

Returns:

The current line position.

See Also:

Node.getLine()

getColumn

public int getColumn()

Specified by:

getColumn in interface Node

Returns:

The current column position.

See Also:

Node.getColumn()

toString

public String toString()

Overrides:

toString in class Object