Scanner

All Superinterfaces:

java.util.Iterator<Token>

All Known Implementing Classes:

ScannerImpl
```
public interface Scanner
extends java.util.Iterator<Token>
```
This interface represents an input stream of Tokens.
The scanner and the parser form together the 'Parse' step in the loading process.

See Also:

3.1. Processes

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`checkToken(Token.ID... choices)`	Check if the next token is one of the given types.
`Token`	`next()`	Returns the next token.
`Token`	`peekToken()`	Return the next token, but do not delete it from the stream.
`void`	`resetDocumentIndex()`	Set the document index to 0 after a document end

Methods inherited from interface java.util.Iterator
forEachRemaining, hasNext, remove

- Method Detail
  - checkToken
```
boolean checkToken(Token.ID... choices)
```
    Check if the next token is one of the given types.
    
    Parameters:
    
    choices - token IDs to match with
    
    Returns:
    
    true if the next token is one of the given types. Returns false if no more tokens are available.
    
    Throws:
    
    ScannerException - Thrown in case of malformed input.
  - peekToken
```
Token peekToken()
```
    Return the next token, but do not delete it from the stream.
    
    Returns:
    
    The token that will be returned on the next call to next()
    
    Throws:
    
    ScannerException - Thrown in case of malformed input.
    
    java.lang.IndexOutOfBoundsException - if no more token left
  - next
```
Token next()
```
    Returns the next token.
    The token will be removed from the stream. (Every invocation of this method must happen after calling either checkToken(org.snakeyaml.engine.v2.tokens.Token.ID...) or peekToken()
    
    Specified by:
    
    next in interface java.util.Iterator<Token>
    
    Returns:
    
    the coming token
    
    Throws:
    
    ScannerException - Thrown in case of malformed input.
    
    java.lang.IndexOutOfBoundsException - if no more token left
  - resetDocumentIndex
```
void resetDocumentIndex()
```
    Set the document index to 0 after a document end