CharStream (ANTLR 4 Runtime 4.13.2 API)

All Superinterfaces:

IntStream

All Known Implementing Classes:

ANTLRFileStream, ANTLRInputStream, CodePointCharStream, UnbufferedCharStream
```
public interface CharStream
extends IntStream
```
A source of characters for an ANTLR lexer.

Field Summary
- Fields inherited from interface org.antlr.v4.runtime.IntStream
  EOF, UNKNOWN_SOURCE_NAME

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`String`	`getText(Interval interval)`	This method returns the text for a range of characters within this input stream.

Methods inherited from interface org.antlr.v4.runtime.IntStream
consume, getSourceName, index, LA, mark, release, seek, size

- Method Detail
  - getText
```
String getText(Interval interval)
```
    This method returns the text for a range of characters within this input stream. This method is guaranteed to not throw an exception if the specified interval lies entirely within a marked range. For more information about marked ranges, see IntStream.mark().
    
    Parameters:
    
    interval - an interval within the stream
    
    Returns:
    
    the text of the specified interval
    
    Throws:
    
    NullPointerException - if interval is null
    
    IllegalArgumentException - if interval.a < 0, or if interval.b < interval.a - 1, or if interval.b lies at or past the end of the stream
    
    UnsupportedOperationException - if the stream does not support getting the text of the specified interval