SyntaxTree (ANTLR 4 Runtime 4.13.1 API)

All Superinterfaces:

Tree

All Known Subinterfaces:

ErrorNode, ParseTree, RuleNode, TerminalNode

All Known Implementing Classes:

ErrorNodeImpl, InterpreterRuleContext, ParserRuleContext, RuleContext, RuleContextWithAltNum, TerminalNodeImpl
```
public interface SyntaxTree
extends Tree
```
A tree that knows about an interval in a token stream is some kind of syntax tree. Subinterfaces distinguish between parse trees and other kinds of syntax trees we might want to create.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Interval`	`getSourceInterval()`	Return an `Interval` indicating the index in the `TokenStream` of the first and last token associated with this subtree.

Methods inherited from interface org.antlr.v4.runtime.tree.Tree
getChild, getChildCount, getParent, getPayload, toStringTree

- Method Detail
  - getSourceInterval
```
Interval getSourceInterval()
```
    Return an Interval indicating the index in the TokenStream of the first and last token associated with this subtree. If this node is a leaf, then the interval represents a single token and has interval i..i for token index i.
    An interval of i..i-1 indicates an empty interval at position i in the input stream, where 0 <= i <= the size of the input token stream. Currently, the code base can only have i=0..n-1 but in concept one could have an empty interval after EOF.
    
    If source interval is unknown, this returns Interval.INVALID.
    
    As a weird special case, the source interval for rules matched after EOF is unspecified.