Package com.singularsys.jep.walkers

Class GenericDeepCopyVisitor<D>

java.lang.Object

com.singularsys.jep.walkers.GenericDoNothingVisitor<D>

com.singularsys.jep.walkers.GenericDeepCopyVisitor<D>

Type Parameters:

D - the type of the data passed to the visit methods

All Implemented Interfaces:

GenericVisitor<Node,D,ParseException>, JepComponent, Serializable

Direct Known Subclasses:

ExpressionConsolidator, ImportationVisitor, LightWeightImportationVisitor

public class GenericDeepCopyVisitor<D>
extends GenericDoNothingVisitor<D>

A Visitor which returns an exact copy of the tree, creating new nodes for each type. This class should be extended by visitors which modify trees and creates a new tree.

Since:

Jep 4.1

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.walkers.GenericDoNothingVisitor

ft, nf, ot

Constructor Summary

Constructors

Constructor	Description
GenericDeepCopyVisitor()	Constructor to use as a JepComponent.

Method Summary

Modifier and Type	Method	Description
JepComponent	getLightWeightInstance()	Gets a light-weight instance suitable for using in multiple threads.
Node	visit(ASTConstant node, D data)	Visit a constant node
Node	visit(ASTFunNode node, D data)	Visit a function node
Node	visit(ASTOpNode node, D data)	Visit an operator node
Node	visit(ASTVarNode node, D data)	Visit a variable node
Node	visit(Node node, D data)	Visit a node calling the appropriate overloaded method.

Methods inherited from class com.singularsys.jep.walkers.GenericDoNothingVisitor

childrenHaveChanged, copyChildrenIfNeeded, copyChildrenIfNeeded, init, makeException

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.singularsys.jep.GenericVisitor

makeException, visitChildren

Constructor Details

GenericDeepCopyVisitor

public GenericDeepCopyVisitor()

Constructor to use as a JepComponent. GenericDoNothingVisitor.init(Jep) must be called later.

Method Details

visit

public Node visit(Node node,
 D data)
           throws ParseException

Description copied from interface: GenericVisitor

Visit a node calling the appropriate overloaded method.

Parameters:

node - current node

data - context data passed to each child

Returns:

result of visiting the node

Throws:

ParseException

visit

public Node visit(ASTConstant node,
 D data)
           throws ParseException

Description copied from interface: GenericVisitor

Visit a constant node

Specified by:

visit in interface GenericVisitor<Node,D,ParseException>

Overrides:

visit in class GenericDoNothingVisitor<D>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

visit

public Node visit(ASTFunNode node,
 D data)
           throws ParseException

Description copied from interface: GenericVisitor

Visit a function node

Specified by:

visit in interface GenericVisitor<Node,D,ParseException>

Overrides:

visit in class GenericDoNothingVisitor<D>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

visit

public Node visit(ASTOpNode node,
 D data)
           throws ParseException

Description copied from interface: GenericVisitor

Visit an operator node

Specified by:

visit in interface GenericVisitor<Node,D,ParseException>

Overrides:

visit in class GenericDoNothingVisitor<D>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

visit

public Node visit(ASTVarNode node,
 D data)
           throws ParseException

Description copied from interface: GenericVisitor

Visit a variable node

Specified by:

visit in interface GenericVisitor<Node,D,ParseException>

Overrides:

visit in class GenericDoNothingVisitor<D>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

getLightWeightInstance

public JepComponent getLightWeightInstance()

Description copied from interface: JepComponent

Gets a light-weight instance suitable for using in multiple threads.

Specified by:

getLightWeightInstance in interface JepComponent

Overrides:

getLightWeightInstance in class GenericDoNothingVisitor<D>

Returns:

either a new instance, null or 'this'.