bboss.org.apache.velocity.runtime.parser.node

Class ASTMathNode

java.lang.Object

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

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

All Implemented Interfaces:

Node, Renderable

Direct Known Subclasses:

ASTAddNode, ASTDivNode, ASTModNode, ASTMulNode, ASTSubtractNode

public abstract class ASTMathNode
extends SimpleNode

Helps handle math

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

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	strictMode

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

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected java.lang.Object	handleSpecial(java.lang.Object left, java.lang.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.
java.lang.Object	init(InternalContextAdapter context, java.lang.Object data)
java.lang.Object	jjtAccept(ParserVisitor visitor, java.lang.Object data)
abstract java.lang.Number	perform(java.lang.Number left, java.lang.Number right, InternalContextAdapter context) Performs the math operation represented by this node.
java.lang.Object	value(InternalContextAdapter context) gets the two args and performs the operation on them

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

childrenAccept, dump, evaluate, execute, getChildren, getColumn, getFirstToken, getInfo, getLastToken, getLine, getLocation, getRuntimeServices, getTemplateName, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, setFirstToken, setInfo, setInvalid, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

strictMode

protected boolean strictMode

Constructor Detail

ASTMathNode

public ASTMathNode(int id)

ASTMathNode

public ASTMathNode(Parser p,
                   int id)

Method Detail

init

public java.lang.Object init(InternalContextAdapter context,
                             java.lang.Object data)
                      throws TemplateInitException

Specified by:

init in interface Node

Overrides:

init in class SimpleNode

Returns:

The init result.

Throws:

TemplateInitException

See Also:

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

jjtAccept

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

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class SimpleNode

Returns:

The Node execution result object.

See Also:

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

value

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

gets the two args and performs the operation on them

Specified by:

value in interface Node

Overrides:

value in class SimpleNode

Parameters:

context -

Returns:

result or null

Throws:

MethodInvocationException

See Also:

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

handleSpecial

protected java.lang.Object handleSpecial(java.lang.Object left,
                                         java.lang.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.

See Also:

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

perform

public abstract java.lang.Number perform(java.lang.Number left,
                                         java.lang.Number right,
                                         InternalContextAdapter context)

Performs the math operation represented by this node.