org.apache.velocity.runtime.parser.node

Class ASTAddNode

java.lang.Object

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

org.apache.velocity.runtime.parser.node.ASTBinaryOperator

org.apache.velocity.runtime.parser.node.ASTMathNode

org.apache.velocity.runtime.parser.node.ASTAddNode

All Implemented Interfaces:

Node, Renderable

public class ASTAddNode
extends ASTMathNode

Handles number addition of nodes.

Please look at the Parser.jjt file which is what controls the generation of this class.

Version:

$Id$

Author:

Will Glass-Husain, Peter Romianowski, Jason van Zyl, Geir Magnusson Jr.

Field Summary

Fields inherited from class org.apache.velocity.runtime.parser.node.ASTMathNode

strictMode

Fields inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

children, column, first, firstImage, id, info, invalid, last, lastImage, line, literal, log, parent, parser, rsvc, state, template

Constructor Summary

Constructors

Constructor and Description
ASTAddNode(int id)
ASTAddNode(Parser p, int id)

Method Summary

Modifier and Type	Method and Description
String	getLiteralOperator() get the string representing the mathematical operator
protected Object	handleSpecial(Object left, Object right, InternalContextAdapter context) Extension hook to allow special behavior by subclasses If this method returns a non-null value, that is returned, rather than the result of the math operation.
Number	perform(Number left, Number right, InternalContextAdapter context) Performs the math operation represented by this node.

Methods inherited from class org.apache.velocity.runtime.parser.node.ASTMathNode

init, jjtAccept, value

Methods inherited from class org.apache.velocity.runtime.parser.node.ASTBinaryOperator

literal

Methods inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

childrenAccept, cleanupParserAndTokens, dump, dump, dump, evaluate, execute, getColumn, getFirstToken, getFirstTokenImage, getInfo, getLastToken, getLastTokenImage, getLine, getLocation, getParser, getRuntimeServices, getTemplate, getTemplateName, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, render, saveTokenImages, setFirstToken, setInfo, setInvalid, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTAddNode

public ASTAddNode(int id)

Parameters:

id -

ASTAddNode

public ASTAddNode(Parser p,
                  int id)

Parameters:

p -

id -

Method Detail

handleSpecial

protected Object handleSpecial(Object left,
                               Object right,
                               InternalContextAdapter context)

Description copied from class: ASTMathNode

Extension hook to allow special behavior by subclasses If this method returns a non-null value, that is returned, rather than the result of the math operation.

Overrides:

handleSpecial in class ASTMathNode

Returns:

special value

See Also:

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

getLiteralOperator

public String getLiteralOperator()

Description copied from class: ASTBinaryOperator

get the string representing the mathematical operator

Specified by:

getLiteralOperator in class ASTBinaryOperator

Returns:

operator string

perform

public Number perform(Number left,
                      Number right,
                      InternalContextAdapter context)

Description copied from class: ASTMathNode

Performs the math operation represented by this node.

Specified by:

perform in class ASTMathNode

Returns:

computed value

See Also:

perform(Number, Number, InternalContextAdapter)