Package org.snakeyaml.engine.v2.scanner

Class ScannerImpl

java.lang.Object

org.snakeyaml.engine.v2.scanner.ScannerImpl

All Implemented Interfaces:

Iterator<Token>, Scanner

public final class ScannerImpl
extends Object
implements Scanner

 Scanner produces tokens of the following types:
 STREAM-START
 STREAM-END
 DIRECTIVE(name, value)
 DOCUMENT-START
 DOCUMENT-END
 BLOCK-SEQUENCE-START
 BLOCK-MAPPING-START
 BLOCK-END
 FLOW-SEQUENCE-START
 FLOW-MAPPING-START
 FLOW-SEQUENCE-END
 FLOW-MAPPING-END
 BLOCK-ENTRY
 FLOW-ENTRY
 KEY
 VALUE
 ALIAS(value)
 ANCHOR(value)
 TAG(value)
 SCALAR(value, plain, style)
 Read comments in the Scanner code for more details.
 

Constructor Summary

Constructors

Constructor	Description
ScannerImpl(StreamReader reader)

Method Summary

Modifier and Type	Method	Description
boolean	checkToken(Token.ID... choices)	Check whether the next token is one of the given types.
boolean	hasNext()
Token	next()	Return the next token, removing it from the queue.
Token	peekToken()	Return the next token, but do not delete it from the queue.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

ScannerImpl

public ScannerImpl(StreamReader reader)

Method Detail

checkToken

public boolean checkToken(Token.ID... choices)

Check whether the next token is one of the given types.

Specified by:

checkToken in interface Scanner

Parameters:

choices - token IDs.

Returns:

true if the next token can be assigned to a variable of at least one of the given types. Returns false if no more tokens are available.

peekToken

public Token peekToken()

Return the next token, but do not delete it from the queue.

Specified by:

peekToken in interface Scanner

Returns:

The token that will be returned on the next call to Scanner.next()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Token>

next

public Token next()

Return the next token, removing it from the queue.

Specified by:

next in interface Iterator<Token>

Specified by:

next in interface Scanner

Returns:

the coming token