AstVisitorBase (PMD Core 7.5.0 API)

java.lang.Object
- net.sourceforge.pmd.lang.ast.AstVisitorBase<P,R>

All Implemented Interfaces:

AstVisitor<P,R>
```
public abstract class AstVisitorBase<P,R>
extends Object
implements AstVisitor<P,R>
```
Base implementation of AstVisitor, that performs a top-down (preorder) visit and may accumulate a result.
Note that if you care about the result (<R>), then you need to override visitChildren to implement the logic that combines values from children, if any.

Constructor Summary

Constructors
Constructor Description

AstVisitorBase()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected R`	`visitChildren(Node node, P data)`	Visit the children.
`R`	`visitNode(Node node, P param)`	Visit a node.

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

Methods inherited from interface net.sourceforge.pmd.lang.ast.AstVisitor
cannotVisit

- Constructor Detail
  - AstVisitorBase
```
public AstVisitorBase()
```
- Method Detail
  - visitChildren
```
protected R visitChildren(Node node,
                          P data)
```
    Visit the children. By default the data parameter is passed unchanged to all descendants, and null is returned. Override this method to customize this behavior.
    
    Parameters:
    
    node - Node whose children should be visited
    
    data - Parameter of the visit
    
    Returns:
    
    Some value for the children
  - visitNode
```
public R visitNode(Node node,
                   P param)
```
    Description copied from interface: AstVisitor
    
    Visit a node. This method is dispatched statically, you should use Node.acceptVisitor(AstVisitor, Object) if you want to call the most specific method instead.
    
    Specified by:
    
    visitNode in interface AstVisitor<P,R>
    
    Parameters:
    
    node - Node to visit
    
    param - Parameter
    
    Returns:
    
    Some result