Package com.singularsys.jep.walkers

Class LightWeightImportationVisitor

java.lang.Object

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

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

com.singularsys.jep.walkers.LightWeightImportationVisitor

All Implemented Interfaces:

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

public class LightWeightImportationVisitor
extends GenericDeepCopyVisitor<Void>

A variant off the ImportationVisitor that uses either the same pfmc for a node or its getLightWeightInstance() if the function implements JepComponent. The ImportationVisitor finds the function by looking it up in the FunctionTable.

This class is used by the MacroFunction to ensure that these work correctly with the com.singularsys.jep.misc.overloadedfunctions package.

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

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
LightWeightImportationVisitor(Jep j)

Method Summary

Modifier and Type	Method	Description
Node	importEqn(Node node)	Import an equation from another Jep instance.
Node	visit(ASTFunNode node, Void data)	Creates a new function node, using the same pfmc, or its lightweight instance if the function implements JepComponent.
Node	visit(ASTOpNode node, Void data)	Create a new operator node, using the same operator.
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

LightWeightImportationVisitor

public LightWeightImportationVisitor(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

Creates a new function node, using the same pfmc, or its lightweight instance if the function implements JepComponent.

Specified by:

visit in interface GenericVisitor<Node,Void,ParseException>

Overrides:

visit in class GenericDeepCopyVisitor<Void>

Parameters:

node - node to copy

data - ignored

Returns:

a new node

Throws:

ParseException

visit

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

Create a new operator node, using the same operator. The Node's pfmc, either the nodes pfmc or its lightWeight instance.

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

importEqn

public Node importEqn(Node node)
               throws ParseException

Import an equation from another Jep instance.

Parameters:

node - the node to import

Returns:

a copy of the node, with the same pfmc or its lightWeightInstance if the pfmc implements JepComponent

Throws:

ParseException