LexScan (JFlex-scala 1.6.1 API)

java.lang.Object
- jflex.LexScan

All Implemented Interfaces:

Scanner, sym
```
public final class LexScan
extends Object
implements sym, Scanner
```
This class is a scanner generated by JFlex 1.6.1 from the specification file /iesl/local/jenkins/workspace/jflex-scala/jflex/src/main/jflex/LexScan.flex

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`CHARCLASS`
`static int`	`CHARCLASS_CODEPOINT`
`static int`	`COMMENT`
`static int`	`COPY`
`static int`	`CTOR_ARG`
`static int`	`EATWSPNL`
`static int`	`JAVA_CODE`
`static int`	`MACROS`
`static int`	`REGEXP`
`static int`	`REGEXP_CODEPOINT_SEQUENCE`
`static int`	`REGEXPSTART`
`static int`	`REPEATEXP`
`static int`	`STATELIST`
`static int`	`STATES`
`static int`	`STRING_CODEPOINT_SEQUENCE`
`static int`	`STRING_CONTENT`
`static int`	`YYEOF` This character denotes the end of file
`static int`	`YYINITIAL` lexical states

Fields inherited from interface jflex.sym
ACTION, ASCII, BANG, BAR, CCLASS, CCLASSNOT, CHAR, CHAR_I, CLOSEBRACKET, CLOSECLASS, COMMA, CONCAT, DASH, DELIMITER, DIFFERENCE, DIGITCLASS, DIGITCLASSNOT, DOLLAR, EOF, EOFRULE, EQUALS, error, FULL, HAT, IDENT, INTERSECTION, JLETTERCLASS, JLETTERDIGITCLASS, LBRACE, LESSTHAN, LETTERCLASS, LOOKAHEAD, LOWERCLASS, MACROUSE, MORETHAN, NEWLINE, NOACTION, OPENBRACKET, OPENCLASS, PLUS, POINT, QUESTION, RBRACE, REGEXPEND, REPEAT, STAR, STRING, STRING_I, SYMMETRICDIFFERENCE, terminalNames, TILDE, UNICODE, UNION, UNIPROPCCLASS, UNIPROPCCLASSNOT, UPPERCLASS, USERCODE, WHITESPACECLASS, WHITESPACECLASSNOT, WORDCLASS, WORDCLASSNOT

Constructor Summary

Constructors
Constructor and Description

LexScan(Reader in)
Creates a new scanner

Constructors
Constructor and Description
`LexScan(Reader in)` Creates a new scanner

Method Summary

Methods
Modifier and Type	Method and Description
`static String`	`conc(Object a, Object b)`
`static String`	`concExc(Object a, Object b)`
`int`	`currentLine()`
`Symbol`	`debug_next_token()` Same as next_token but also prints the token to standard out for debugging.
`CharClasses`	`getCharClasses()`
`UnicodeProperties`	`getUnicodeProperties()`
`static void`	`main(String[] argv)` Runs the scanner on input files.
`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`	`setFile(File file)`
`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.
`boolean`	`yymoreStreams()` Returns true iff there are still streams left to read from on the stream stack.
`void`	`yypopStream()` Closes the current input stream and continues to read from the one on top of the stream stack.
`void`	`yypushback(int number)` Pushes the specified amount of characters back into the input stream.
`void`	`yypushStream(Reader reader)` Stores the current input stream on a stack, and reads from a new stream.
`void`	`yyreset(Reader reader)` Resets the scanner to read from a new input stream.
`int`	`yystate()` Returns the current lexical state.
`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
  - YYINITIAL
```
public static final int YYINITIAL
```
    lexical states
    
    See Also:
    Constant Field Values
  - COMMENT
```
public static final int COMMENT
```
    See Also:
    Constant Field Values
  - STATELIST
```
public static final int STATELIST
```
    See Also:
    Constant Field Values
  - MACROS
```
public static final int MACROS
```
    See Also:
    Constant Field Values
  - REGEXPSTART
```
public static final int REGEXPSTART
```
    See Also:
    Constant Field Values
  - REGEXP
```
public static final int REGEXP
```
    See Also:
    Constant Field Values
  - JAVA_CODE
```
public static final int JAVA_CODE
```
    See Also:
    Constant Field Values
  - STATES
```
public static final int STATES
```
    See Also:
    Constant Field Values
  - STRING_CONTENT
```
public static final int STRING_CONTENT
```
    See Also:
    Constant Field Values
  - CHARCLASS
```
public static final int CHARCLASS
```
    See Also:
    Constant Field Values
  - COPY
```
public static final int COPY
```
    See Also:
    Constant Field Values
  - REPEATEXP
```
public static final int REPEATEXP
```
    See Also:
    Constant Field Values
  - EATWSPNL
```
public static final int EATWSPNL
```
    See Also:
    Constant Field Values
  - CTOR_ARG
```
public static final int CTOR_ARG
```
    See Also:
    Constant Field Values
  - REGEXP_CODEPOINT_SEQUENCE
```
public static final int REGEXP_CODEPOINT_SEQUENCE
```
    See Also:
    Constant Field Values
  - STRING_CODEPOINT_SEQUENCE
```
public static final int STRING_CODEPOINT_SEQUENCE
```
    See Also:
    Constant Field Values
  - CHARCLASS_CODEPOINT
```
public static final int CHARCLASS_CODEPOINT
```
    See Also:
    Constant Field Values
- Constructor Detail
  - LexScan
```
public LexScan(Reader in)
```
    Creates a new scanner
    
    Parameters:
    in - the java.io.Reader to read input from.
- Method Detail
  - getCharClasses
```
public CharClasses getCharClasses()
```
  - currentLine
```
public int currentLine()
```
  - setFile
```
public void setFile(File file)
```
  - conc
```
public static String conc(Object a,
          Object b)
```
  - concExc
```
public static String concExc(Object a,
             Object b)
```
  - getUnicodeProperties
```
public UnicodeProperties getUnicodeProperties()
```
  - yyclose
```
public final void yyclose()
                   throws IOException
```
    Closes the input stream.
    
    Throws:
    
    IOException
  - yypushStream
```
public final void yypushStream(Reader reader)
```
    Stores the current input stream on a stack, and reads from a new stream. Lexical state, line, char, and column counting remain untouched. The current input stream can be restored with yypopStream (usually in an <> action).
    
    Parameters:
    reader - the new input stream to read from
    See Also:
    yypopStream()
  - yypopStream
```
public final void yypopStream()
                       throws IOException
```
    Closes the current input stream and continues to read from the one on top of the stream stack.
    
    Throws:
    
    EmptyStackException - if there is no further stream to read from.
    
    IOException - if there was an error in closing the stream.
    See Also:
    yypushStream(java.io.Reader)
  - yymoreStreams
```
public final boolean yymoreStreams()
```
    Returns true iff there are still streams left to read from on the stream stack.
  - yyreset
```
public final void yyreset(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. Internal scan buffer is resized down to its initial length, if it has grown.
    
    Parameters:
    reader - the new input stream
    See Also:
    yypushStream(java.io.Reader), yypopStream()
  - 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 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.
  - 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()!
  - next_token
```
public Symbol next_token()
                  throws 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 Scanner
    
    Returns:
    the next token
    
    Throws:
    
    IOException - if any I/O-Error occurs
  - debug_next_token
```
public Symbol debug_next_token()
                        throws IOException
```
    Same as next_token but also prints the token to standard out for debugging. This code was contributed by Karl Meissner
    
    Throws:
    
    IOException
  - main
```
public static void main(String[] argv)
```
    Runs the scanner on input files. This main method is the debugging routine for the scanner. It prints debugging information about each returned token to System.out until the end of file is reached, or an error occured.
    
    Parameters:
    argv - the command line, contains the filenames to run the scanner on.

Class LexScan

Field Summary

Fields inherited from interface jflex.sym

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

YYEOF

YYINITIAL

COMMENT

STATELIST

MACROS

REGEXPSTART

REGEXP

JAVA_CODE

STATES

STRING_CONTENT

CHARCLASS

COPY

REPEATEXP

EATWSPNL

CTOR_ARG

REGEXP_CODEPOINT_SEQUENCE

STRING_CODEPOINT_SEQUENCE

CHARCLASS_CODEPOINT

Constructor Detail

LexScan

Method Detail

getCharClasses

currentLine

setFile

conc

concExc

getUnicodeProperties

yyclose

yypushStream

yypopStream

yymoreStreams

yyreset

yystate

yybegin

yytext

yycharat

yylength

yypushback

next_token

debug_next_token

main