The Meta-Environment API

toolbus.parsercup
Class Lexer

java.lang.Object
  extended by 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

The Meta-Environment API