org.apache.velocity.runtime.parser.node

Class ASTSubtractNode

Implemented Interfaces:
Node

public class ASTSubtractNode
extends SimpleNode

Handles integer subtraction of nodes (in #set() ) Please look at the Parser.jjt file which is what controls the generation of this class.

Version:
$Id: ASTSubtractNode.java,v 1.7.8.1 2004/03/03 23:22:59 geirm Exp $

Authors:
Jason van Zyl
Geir Magnusson Jr.

Field Summary

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

children, first, id, info, invalid, last, parent, parser, rsvc, state

Constructor Summary

ASTSubtractNode(int id)
ASTSubtractNode(Parser p, int id)

Method Summary

Object
jjtAccept(ParserVisitor visitor, Object data)
Accept the visitor.
Object
value(InternalContextAdapter context)
computes the value of the subtraction.

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

childrenAccept, dump, evaluate, execute, getColumn, getFirstToken, getInfo, getLastToken, getLine, getType, init, isInvalid, jjtAccept, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, setFirstToken, setInfo, setInvalid, toString, value

Constructor Details

ASTSubtractNode

public ASTSubtractNode(int id)


ASTSubtractNode

public ASTSubtractNode(Parser p,
                       int id)

Method Details

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
                        Object data)
Accept the visitor. *
Specified by:
jjtAccept in interface Node
Overrides:
jjtAccept in interface SimpleNode


value

public Object value(InternalContextAdapter context)
            throws MethodInvocationException
computes the value of the subtraction. Currently limited to integers
Specified by:
value in interface Node
Overrides:
value in interface SimpleNode

Returns:
Integer(value) or null


Copyright B) 2002 Apache Software Foundation. All Rights Reserved.