Package com.singularsys.jep.walkers

Class ImportationVisitor

java.lang.Object

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

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

com.singularsys.jep.walkers.ImportationVisitor

All Implemented Interfaces:

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

public class ImportationVisitor
extends GenericDeepCopyVisitor<Void>

Imports an expression from one Jep instance into another. This class is quicker than using a SerializableExpression but cannot handle such large equations.

   Jep sourceJep = ...;
   Jep destJep = ...;
   ImportationVisitor iv = new ImportationVisitor(destJep);
   Node node = sourceJep.parse("x^2-y^2");
   Node imported = iv.importEqn(node); 
 

Since Jep 4.1, this class extends GenericDeepCopyVisitor, changing some type signatures. The method importEqn(Node) should be used to import equations, rather than the deprecated deepCopy(Node).

Since:

Jep 3.5

Author:

Richard Morris

See Also:

• SerializableExpression
• Serialized Form

Field Summary

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

ft, nf, ot

Constructor Summary

Constructors

Constructor	Description
ImportationVisitor(Jep j)

Method Summary

Modifier and Type	Method	Description
Node	deepCopy(Node node)	Deprecated. use importEqn(Node) instead, which is more descriptive.
Node	importEqn(Node node)	Imports an equation from another Jep instance.
Node	visit(ASTFunNode node, Void data)	Ensures that functions will be correct for the give Jep instance.
Node	visit(ASTOpNode node, Void data)	Ensures that operators are correct for the given Jep instance.
Node	visit(ASTVarNode node, Void data)	Uses the name of the variable rather than the variable reference to create the node

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

getLightWeightInstance, visit, visit

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

ImportationVisitor

public ImportationVisitor(Jep j)

Method Details

visit

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

Uses the name of the variable rather than the variable reference to create the node

Specified by:

visit in interface GenericVisitor<Node,Void,ParseException>

Overrides:

visit in class GenericDeepCopyVisitor<Void>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

visit

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

Ensures that functions will be correct for the give Jep instance. Necessary for functions which implement JepComponent.

Specified by:

visit in interface GenericVisitor<Node,Void,ParseException>

Overrides:

visit in class GenericDeepCopyVisitor<Void>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

Since:

4.0

visit

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

Ensures that operators are correct for the given Jep instance. Necessary for functions which implement JepComponent.

Specified by:

visit in interface GenericVisitor<Node,Void,ParseException>

Overrides:

visit in class GenericDeepCopyVisitor<Void>

Parameters:

node - current node

data - context data

Returns:

the result of visiting the node

Throws:

ParseException

Since:

4.0

importEqn

public Node importEqn(Node node)
               throws ParseException

Imports an equation from another Jep instance.

Parameters:

node - the node to import

Returns:

a new node, with the same variable names, function names and operator names, but using the functions and operators of the Jep instance used to create this visitor.

Throws:

ParseException - if there is an error during the importation process.

deepCopy

@Deprecated(since="4.1")
public Node deepCopy(Node node)
              throws ParseException

Deprecated.

use importEqn(Node) instead, which is more descriptive.

Imports an equation from another Jep instance.

Parameters:

node - the node to import

Returns:

a new node, with the same variable names, function names and operator names, but using the functions and operators of the Jep instance used to create this visitor.

Throws:

ParseException - if there is an error during the importation process.