toolbus.parsercup
Class Lexer

java.lang.Object
  toolbus.parsercup.Lexer

All Implemented Interfaces:

java_cup.runtime.Scanner

public class Lexer
extends java.lang.Object
implements java_cup.runtime.Scanner

This class is a scanner generated by JFlex 1.3.5 on 7/3/08 11:06 AM from the specification file file:/export/scratch1/lankamp/metaClipse/toolbus-ng/src/toolbus/parsercup/toolbus.jflex

Field Summary

static int	INCLUDE
private int	previousYYchar
private java.lang.StringBuilder	string
static int	STRING lexical states
private boolean	yy_atEOF yy_atEOF == true <=> the scanner is at the EOF
private static byte[]	YY_ATTRIBUTE YY_ATTRIBUTE[aState] contains the attributes of state aState
private char[]	yy_buffer this buffer contains the current text to be matched and is the source of the yytext() string
private static int	YY_BUFFERSIZE initial size of the lookahead buffer
private int	yy_currentPos the current text position in the buffer
private int	yy_endRead endRead marks the last character in the buffer, that has been read from input
private boolean	yy_eof_done denotes if the user-EOF-code has already been executed
private static java.lang.String[]	YY_ERROR_MSG
private int	yy_lexical_state the current lexical state
private int	yy_markedPos the textposition at the last accepting state
private static int	YY_NO_MATCH
private static java.lang.String	yy_packed0 The packed transition table of the DFA (part 0)
private int	yy_pushbackPos the textposition at the last state to be included in yytext
private java.io.Reader	yy_reader the input device
private static int[]	yy_rowMap Translates a state to a row index in the transition table
private int	yy_startRead startRead marks the beginning of the yytext() string in the buffer
private int	yy_state the current state of the DFA
private static int	YY_UNKNOWN_ERROR
private int	yychar the number of characters up to the start of the matched text
private static char[]	yycmap Translates characters to character classes
private static java.lang.String	yycmap_packed Translates characters to character classes
private int	yycolumn the number of characters from the last newline up to the start of the matched text
static int	YYEOF This character denotes the end of file
static int	YYINITIAL
private int	yyline number of newlines encountered up to the start of the matched text
private static int[]	yytrans The transition table of the DFA

Constructor Summary

Lexer(java.io.InputStream in)
Creates a new scanner.

Lexer(java.io.Reader in)
Creates a new scanner There is also a java.io.InputStream version of this constructor.

Method Summary

int	getPosition()
int	getPreviousPosition()
java_cup.runtime.Symbol	next_token() Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.
private java_cup.runtime.Symbol	symbol(int type)
private java_cup.runtime.Symbol	symbol(int type, java.lang.Object value)
private void	yy_do_eof() Contains user EOF-code, which will be executed exactly once, when the end of file is reached
private boolean	yy_refill() Refills the input buffer.
private void	yy_ScanError(int errorCode) Reports an error that occured while scanning.
private static char[]	yy_unpack_cmap(java.lang.String packed) Unpacks the compressed character translation table.
private static int[]	yy_unpack() Unpacks the split, compressed DFA transition table.
private static int	yy_unpack(java.lang.String packed, int offset, int[] trans) Unpacks the compressed DFA transition table.
void	yybegin(int newState) Enters a new lexical state
char	yycharat(int pos) Returns the character at position pos from the matched text.
void	yyclose() Closes the input stream.
int	yylength() Returns the length of the matched text region.
void	yyreset(java.io.Reader reader) Closes the current stream, and resets the scanner to read from a new input stream.
int	yystate() Returns the current lexical state.
java.lang.String	yytext() Returns the text matched by the current regular expression.

Methods inherited from class java.lang.Object

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

Field Detail

YYEOF

public static final int YYEOF

This character denotes the end of file

See Also:

Constant Field Values

YY_BUFFERSIZE

private static final int YY_BUFFERSIZE

initial size of the lookahead buffer

See Also:

Constant Field Values

STRING

public static final int STRING

lexical states

See Also:

Constant Field Values

YYINITIAL

public static final int YYINITIAL

See Also:

Constant Field Values

INCLUDE

public static final int INCLUDE

See Also:

Constant Field Values

yycmap_packed

private static final java.lang.String yycmap_packed

Translates characters to character classes

See Also:

Constant Field Values

yycmap

private static final char[] yycmap

Translates characters to character classes

yy_rowMap

private static final int[] yy_rowMap

Translates a state to a row index in the transition table

yy_packed0

private static final java.lang.String yy_packed0

The packed transition table of the DFA (part 0)

See Also:

Constant Field Values

yytrans

private static final int[] yytrans

The transition table of the DFA

YY_UNKNOWN_ERROR

private static final int YY_UNKNOWN_ERROR

See Also:

Constant Field Values

YY_NO_MATCH

private static final int YY_NO_MATCH

See Also:

Constant Field Values

YY_ERROR_MSG

private static final java.lang.String[] YY_ERROR_MSG

YY_ATTRIBUTE

private static final byte[] YY_ATTRIBUTE

YY_ATTRIBUTE[aState] contains the attributes of state aState

yy_reader

private java.io.Reader yy_reader

the input device

yy_state

private int yy_state

the current state of the DFA

yy_lexical_state

private int yy_lexical_state

the current lexical state

yy_buffer

private char[] yy_buffer

this buffer contains the current text to be matched and is the source of the yytext() string

yy_markedPos

private int yy_markedPos

the textposition at the last accepting state

yy_pushbackPos

private int yy_pushbackPos

the textposition at the last state to be included in yytext

yy_currentPos

private int yy_currentPos

the current text position in the buffer

yy_startRead

private int yy_startRead

startRead marks the beginning of the yytext() string in the buffer

yy_endRead

private int yy_endRead

endRead marks the last character in the buffer, that has been read from input

yyline

private int yyline

number of newlines encountered up to the start of the matched text

yychar

private int yychar

the number of characters up to the start of the matched text

yycolumn

private int yycolumn

the number of characters from the last newline up to the start of the matched text

yy_atEOF

private boolean yy_atEOF

yy_atEOF == true <=> the scanner is at the EOF

yy_eof_done

private boolean yy_eof_done

denotes if the user-EOF-code has already been executed

string

private java.lang.StringBuilder string

previousYYchar

private volatile int previousYYchar

Constructor Detail

Lexer

public Lexer(java.io.Reader in)

Creates a new scanner There is also a java.io.InputStream version of this constructor.

Parameters:

in - the java.io.Reader to read input from.

Lexer

public Lexer(java.io.InputStream in)

Creates a new scanner. There is also java.io.Reader version of this constructor.

Parameters:

in - the java.io.Inputstream to read input from.

Method Detail

symbol

private java_cup.runtime.Symbol symbol(int type)

symbol

private java_cup.runtime.Symbol symbol(int type,
                                       java.lang.Object value)

getPreviousPosition

public int getPreviousPosition()

getPosition

public int getPosition()

yy_unpack

private static int[] yy_unpack()

Unpacks the split, compressed DFA transition table.

Returns:

the unpacked transition table

yy_unpack

private static int yy_unpack(java.lang.String packed,
                             int offset,
                             int[] trans)

Unpacks the compressed DFA transition table.

Parameters:

packed - the packed transition table

Returns:

the index of the last entry

yy_unpack_cmap

private static char[] yy_unpack_cmap(java.lang.String packed)

Unpacks the compressed character translation table.

Parameters:

packed - the packed character translation table

Returns:

the unpacked character translation table

yy_refill

private boolean yy_refill()
                   throws java.io.IOException

Refills the input buffer.

Returns:

false, iff there was new input.

Throws:

java.io.IOException - if any I/O-Error occurs

yyclose

public final void yyclose()
                   throws java.io.IOException

Closes the input stream.

Throws:

java.io.IOException

yyreset

public final void yyreset(java.io.Reader reader)
                   throws java.io.IOException

Closes the current stream, and resets the scanner to read from a new input stream. All internal variables are reset, the old input stream cannot be reused (internal buffer is discarded and lost). Lexical state is set to YY_INITIAL.

Parameters:

reader - the new input stream

Throws:

java.io.IOException

yystate

public final int yystate()

Returns the current lexical state.

yybegin

public final void yybegin(int newState)

Enters a new lexical state

Parameters:

newState - the new lexical state

yytext

public final java.lang.String yytext()

Returns the text matched by the current regular expression.

yycharat

public final char yycharat(int pos)

Returns the character at position pos from the matched text. It is equivalent to yytext().charAt(pos), but faster

Parameters:

pos - the position of the character to fetch. A value from 0 to yylength()-1.

Returns:

the character at position pos

yylength

public final int yylength()

Returns the length of the matched text region.

yy_ScanError

private void yy_ScanError(int errorCode)

Reports an error that occured while scanning. In a wellformed scanner (no or only correct usage of yypushback(int) and a match-all fallback rule) this method will only be called with things that "Can't Possibly Happen". If this method is called, something is seriously wrong (e.g. a JFlex bug producing a faulty scanner etc.). Usual syntax/scanner level error handling should be done in error fallback rules.

Parameters:

errorCode - the code of the errormessage to display

yy_do_eof

private void yy_do_eof()
                throws java.io.IOException

Contains user EOF-code, which will be executed exactly once, when the end of file is reached

Throws:

java.io.IOException

next_token

public java_cup.runtime.Symbol next_token()
                                   throws java.io.IOException

Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.

Specified by:

next_token in interface java_cup.runtime.Scanner

Returns:

the next token

Throws:

java.io.IOException - if any I/O-Error occurs