ASTIterator (tbel 1.0.3 API)

All Superinterfaces:

Serializable

All Known Implementing Classes:

ASTLinkedList
```
public interface ASTIterator
extends Serializable
```
The ASTIterator interface defines the functionality required by the enginer, for compiletime and runtime operations. Unlike other script implementations, MVEL does not use a completely normalized AST tree for it's execution. Instead, nodes are organized into a linear order and delivered via this iterator interface, much like bytecode instructions.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addTokenNode(ASTNode node)`
`void`	`addTokenNode(ASTNode node1, ASTNode node2)`
`void`	`back()`
`void`	`finish()`
`ASTNode`	`firstNode()`
`boolean`	`hasMoreNodes()`
`int`	`index()`
`ASTNode`	`nextNode()`
`ASTNode`	`nodesAhead(int offset)`
`ASTNode`	`nodesBack(int offset)`
`ASTNode`	`peekLast()`
`ASTNode`	`peekNext()`
`ASTNode`	`peekNode()`
`void`	`reset()`
`String`	`showNodeChain()`
`int`	`size()`
`void`	`skipNode()`

Method Detail

reset
```
void reset()
```

nextNode
```
ASTNode nextNode()
```

skipNode
```
void skipNode()
```

peekNext
```
ASTNode peekNext()
```

peekNode
```
ASTNode peekNode()
```

peekLast
```
ASTNode peekLast()
```

back
```
void back()
```

nodesBack
```
ASTNode nodesBack(int offset)
```

nodesAhead
```
ASTNode nodesAhead(int offset)
```

hasMoreNodes
```
boolean hasMoreNodes()
```

showNodeChain
```
String showNodeChain()
```

firstNode
```
ASTNode firstNode()
```

size
```
int size()
```

index
```
int index()
```

finish
```
void finish()
```

addTokenNode
```
void addTokenNode(ASTNode node)
```

addTokenNode

void addTokenNode(ASTNode node1,
                  ASTNode node2)