jess
Interface Tokenizer

All Known Implementing Classes:

ReaderTokenizer

public interface Tokenizer

The Jess parser reads its input from a Tokenizer. In general, the supplied ReaderTokenizer implementation is sufficient for most needs.

(C) 2006 Sandia National Laboratories

See Also:

ReaderTokenizer

Field Summary

static java.lang.String	BLANK_MULTI
static java.lang.String	BLANK_PREFIX

Method Summary

java.lang.String	discardToEOL() Discard characters from the current stream position to the end of the current line.
void	eatWhitespace() Consume all characters up to, but not including, the next non-whitespace character
int	getStreamPos() Return the current character offset.
JessToken	nextToken() Return the next parsed token, skipping over all whitespace.
java.lang.String	readLine() Return characters from the current location to the end of the current line, as a String
void	reportNewlines(boolean b) Specify whether newlines should be reported as tokens

Field Detail

BLANK_PREFIX

public static final java.lang.String BLANK_PREFIX

See Also:

Constant Field Values

BLANK_MULTI

public static final java.lang.String BLANK_MULTI

See Also:

Constant Field Values

Method Detail

reportNewlines

public void reportNewlines(boolean b)

Specify whether newlines should be reported as tokens

Parameters:

b - true if newlines should be reported

readLine

public java.lang.String readLine()
                          throws JessException

Return characters from the current location to the end of the current line, as a String

Returns:

the rest of the current line

Throws:

JessException - if anything goes wrong

nextToken

public JessToken nextToken()
                    throws JessException

Return the next parsed token, skipping over all whitespace.

Returns:

the token

Throws:

JessException - if anything goes wrong

discardToEOL

public java.lang.String discardToEOL()
                              throws JessException

Discard characters from the current stream position to the end of the current line.

Returns:

the parsed characters

Throws:

JessException - if anything goes wrong

getStreamPos

public int getStreamPos()

Return the current character offset. The meaning depends on the underlying data source.

Returns:

the character position

eatWhitespace

public void eatWhitespace()
                   throws JessException

Consume all characters up to, but not including, the next non-whitespace character

Throws:

JessException