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

java.lang.Object
  |
  +--org.apache.velocity.runtime.parser.node.SimpleNode
        |
        +--org.apache.velocity.runtime.parser.node.ASTSubtractNode

All 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 2001/10/22 03:53:25 jon Exp $

Author:

Jason van Zyl, Geir Magnusson Jr.

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

java.lang.Object	jjtAccept(ParserVisitor visitor, java.lang.Object data) Accept the visitor.
java.lang.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, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, setFirstToken, setInfo, setInvalid, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTSubtractNode

public ASTSubtractNode(int id)

ASTSubtractNode

public ASTSubtractNode(Parser p,
                       int id)

Method Detail

jjtAccept

public java.lang.Object jjtAccept(ParserVisitor visitor,
                                  java.lang.Object data)

Accept the visitor.

Overrides:

jjtAccept in class SimpleNode

value

public java.lang.Object value(InternalContextAdapter context)
                       throws MethodInvocationException

computes the value of the subtraction. Currently limited to integers

Overrides:

value in class SimpleNode

Returns:

Integer(value) or null