ASTPair (antlr Javadoc)

java.lang.Object
- antlr.ASTPair

```
public class ASTPair
extends Object
```
ASTPair: utility class used for manipulating a pair of ASTs representing the current AST root and current AST sibling. This exists to compensate for the lack of pointers or 'var' arguments in Java.

Field Summary

Fields
Modifier and Type Field Description

AST child

AST root

Constructor Summary

Constructors
Constructor Description

ASTPair()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`advanceChildToEnd()`	Make sure that child is the last sibling
`ASTPair`	`copy()`	Copy an ASTPair.
`String`	`toString()`

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

- Field Detail
  - root
```
public AST root
```
  - child
```
public AST child
```
- Constructor Detail
  - ASTPair
```
public ASTPair()
```
- Method Detail
  - advanceChildToEnd
```
public final void advanceChildToEnd()
```
    Make sure that child is the last sibling
  - copy
```
public ASTPair copy()
```
    Copy an ASTPair. Don't call it clone() because we want type-safety
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object