EquationExtractor (Jep with extensions API )

java.lang.Object
- com.singularsys.jep.walkers.DoNothingVisitor
- - com.singularsys.jep.walkers.DeepCopyVisitor
  - - com.singularsys.extensions.xjep.EquationExtractor

All Implemented Interfaces:

JepComponent, ParserVisitor, java.io.Serializable

Direct Known Subclasses:

DEquationExtractor
```
public class EquationExtractor
extends DeepCopyVisitor
```
Extract equations for symbolic variables. If y is a variable which has an equation it will be replaced by its equation.

See Also:

Serialized Form

Field Summary
- Fields inherited from class com.singularsys.jep.walkers.DoNothingVisitor
  ft, jep, nf, ot, vt

Constructor Summary

Constructors
Constructor Description

EquationExtractor()

EquationExtractor(Jep j)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Node`	`replaceRHSVariablesByEquations(Node node)`	Replace variables on the right had side of an assignment by their equations
`Node`	`replaceVariableByExpressions(Node node)`	Replace all symbolic variable by their equations
`java.lang.Object`	`visit(ASTVarNode node, java.lang.Object data)`	Visit a variable node.

Methods inherited from class com.singularsys.jep.walkers.DeepCopyVisitor
deepCopy, visit, visit, visit

Methods inherited from class com.singularsys.jep.walkers.DoNothingVisitor
childrenHaveChanged, copyChildrenIfNeeded, getFunctionTable, getLightWeightInstance, getNodeFactory, getOperatorTable, getVariableTable, init, visit, visitChildren, visitNode

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - EquationExtractor
```
public EquationExtractor()
```
  - EquationExtractor
```
public EquationExtractor(Jep j)
```
- Method Detail
  - replaceVariableByExpressions
```
public Node replaceVariableByExpressions(Node node)
                                  throws JepException
```
    Replace all symbolic variable by their equations
    
    Parameters:
    
    node - root of expression
    
    Returns:
    
    copy of node with variables replaced by their equations
    
    Throws:
    
    JepException
  - replaceRHSVariablesByEquations
```
public Node replaceRHSVariablesByEquations(Node node)
                                    throws JepException
```
    Replace variables on the right had side of an assignment by their equations
    
    Parameters:
    
    node - an equation of the form g:=f^2-1
    
    Returns:
    
    a copy of the node
    
    Throws:
    
    JepException
  - visit
```
public java.lang.Object visit(ASTVarNode node,
                              java.lang.Object data)
                       throws JepException
```
    Description copied from class: DoNothingVisitor
    
    Visit a variable node. Can be overridden by sub-classes.
    
    Specified by:
    
    visit in interface ParserVisitor
    
    Overrides:
    
    visit in class DeepCopyVisitor
    
    Throws:
    
    JepException