kernel
Class LexicalAnalyzer

java.lang.Object
  kernel.LexicalAnalyzer

All Implemented Interfaces:

java_cup.runtime.Scanner

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

This class is a scanner generated by JFlex 1.4.2

Field Summary

static int	INSIDE
static int	YYEOF This character denotes the end of file
static int	YYINITIAL lexical states

Constructor Summary

LexicalAnalyzer(java.io.InputStream r, java_cup.runtime.SymbolFactory sf)

LexicalAnalyzer(java.io.Reader in, java_cup.runtime.SymbolFactory sf)

Method Summary

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.
void	yybegin(int newState) Enters a new lexical state
void	yyclose() Closes the input stream.
char	yycharat(int pos) Returns the character at position pos from the matched text.
int	yylength() Returns the length of the matched text region.
void	yypushback(int number) Pushes the specified amount of characters back into the input stream.
void	yyreset(java.io.Reader reader) 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

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

Field Detail

INSIDE

public static final int INSIDE

See Also:

Constant Field Values

YYEOF

public static final int YYEOF

This character denotes the end of file

See Also:

Constant Field Values

YYINITIAL

public static final int YYINITIAL

lexical states

See Also:

Constant Field Values

Constructor Detail

LexicalAnalyzer

public LexicalAnalyzer(java.io.InputStream r,
                       java_cup.runtime.SymbolFactory sf)

LexicalAnalyzer

public LexicalAnalyzer(java.io.Reader in,
                       java_cup.runtime.SymbolFactory sf)

Method Detail

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

yybegin

public final void yybegin(int newState)

Enters a new lexical state

Parameters:

newState - the new lexical state

yyclose

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

Closes the input stream.

Throws:

java.io.IOException

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.

yypushback

public void yypushback(int number)

Pushes the specified amount of characters back into the input stream. They will be read again by then next call of the scanning method

Parameters:

number - the number of characters to be read again. This number must not be greater than yylength()!

yyreset

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

Resets the scanner to read from a new input stream. Does not close the old reader. All internal variables are reset, the old input stream cannot be reused (internal buffer is discarded and lost). Lexical state is set to ZZ_INITIAL.

Parameters:

reader - the new input stream

yystate

public final int yystate()

Returns the current lexical state.

yytext

public final java.lang.String yytext()

Returns the text matched by the current regular expression.