Package nl.rrd.wool.parser

Class WoolCommandParser

java.lang.Object

nl.rrd.wool.parser.WoolCommandParser

public class WoolCommandParser
extends Object

Constructor Summary

Constructors

Constructor	Description
WoolCommandParser(List<String> validCommands, WoolNodeState nodeState)

Method Summary

Modifier and Type	Method	Description
WoolCommand	parseFromName(WoolBodyToken startToken, CurrentIterator<WoolBodyToken> tokens)	Parses a command from the command name.
WoolCommand	parseFromStart(CurrentIterator<WoolBodyToken> tokens)	Parses a command from the start token.
String	readCommandName(CurrentIterator<WoolBodyToken> tokens)	Reads the command name from the start of a command.

Methods inherited from class java.lang.Object

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

Constructor Detail

WoolCommandParser

public WoolCommandParser(List<String> validCommands,
                         WoolNodeState nodeState)

Method Detail

readCommandName

public String readCommandName(CurrentIterator<WoolBodyToken> tokens)
                       throws LineNumberParseException

Reads the command name from the start of a command. The specified iterator should be positioned at the command start token. When this method returns, it will be positioned at the token with the command name. This method does not validate the command name.

Parameters:

tokens - the tokens

Returns:

the command name

Throws:

LineNumberParseException - if a parsing error occurs

parseFromName

public WoolCommand parseFromName(WoolBodyToken startToken,
                                 CurrentIterator<WoolBodyToken> tokens)
                          throws LineNumberParseException

Parses a command from the command name. The specified iterator should be positioned at the command name token. When this method returns it will be positioned after the command end token. This method can be called after readCommandName(). This method validates the command name.

Parameters:

startToken - the command start token

tokens - the tokens

Returns:

the command

Throws:

LineNumberParseException - if a parsing error occurs

parseFromStart

public WoolCommand parseFromStart(CurrentIterator<WoolBodyToken> tokens)
                           throws LineNumberParseException

Parses a command from the start token. The specified iterator should be positioned at the command start token. When this method returns it will be positioned after the command end token. This method cannot be called after readCommandName(). This method validates the command name.

Parameters:

tokens - the tokens

Returns:

the command

Throws:

LineNumberParseException - if a parsing error occurs