TreeVisitorAction (ANTLR 3 Runtime 3.5.3 API)

```
public interface TreeVisitorAction
```
How to execute code for node t when a visitor visits node t. Execute pre() before visiting children and execute post() after visiting children.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`post(Object t)`	Execute an action after visiting children of t.
`Object`	`pre(Object t)`	Execute an action before visiting children of t.

- Method Detail
  - pre
```
Object pre(Object t)
```
    Execute an action before visiting children of t. Return t or a rewritten t. It is up to the visitor to decide what to do with the return value. Children of returned value will be visited if using TreeVisitor.visit().
  - post
```
Object post(Object t)
```
    Execute an action after visiting children of t. Return t or a rewritten t. It is up to the visitor to decide what to do with the return value.