Class JFlexLexer

  • All Implemented Interfaces:
    CommentScanner, JavaLexer, Lexer

    public class JFlexLexer
    extends java.lang.Object
    implements JavaLexer
    This class is a scanner generated by JFlex 1.7.0 from the specification file src/grammar/lexer.flex
    • Constructor Summary

      Constructors 
      Constructor Description
      JFlexLexer​(java.io.InputStream stream, java.io.Writer writer)  
      JFlexLexer​(java.io.Reader in)
      Creates a new scanner
      JFlexLexer​(java.io.Reader reader, java.io.Writer writer)  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void addCommentHandler​(CommentHandler handler)
      Register this handler as a comment-listener.
      java.lang.String getCodeBody()  
      int getColumn()  
      int getLine()  
      int lex()  
      private void markAnnotatedElementLine()  
      private int parseValue​(java.lang.String value, int defaultValue)  
      private void popState()  
      private void pushState​(int newState)  
      private void resetAnnotatedElementLine()  
      java.lang.String text()  
      private void write()  
      private void write​(java.lang.String text)  
      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.
      int yylex()
      Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.
      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.
      private void zzDoEOF()
      Contains user EOF-code, which will be executed exactly once, when the end of file is reached
      private boolean zzRefill()
      Refills the input buffer.
      private void zzScanError​(int errorCode)
      Reports an error that occured while scanning.
      private static int[] zzUnpackAction()  
      private static int zzUnpackAction​(java.lang.String packed, int offset, int[] result)  
      private static int[] zzUnpackAttribute()  
      private static int zzUnpackAttribute​(java.lang.String packed, int offset, int[] result)  
      private static char[] zzUnpackCMap​(java.lang.String packed)
      Unpacks the compressed character translation table.
      private static int[] zzUnpackRowMap()  
      private static int zzUnpackRowMap​(java.lang.String packed, int offset, int[] result)  
      private static int[] zzUnpackTrans()  
      private static int zzUnpackTrans​(java.lang.String packed, int offset, int[] result)  
      • 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
      • ZZ_BUFFERSIZE

        private static final int ZZ_BUFFERSIZE
        initial size of the lookahead buffer
        See Also:
        Constant Field Values
      • ZZ_LEXSTATE

        private static final int[] ZZ_LEXSTATE
        ZZ_LEXSTATE[l] is the state in the DFA for the lexical state l ZZ_LEXSTATE[l+1] is the state in the DFA for the lexical state l at the beginning of a line l is of the form l = 2*k, k a non negative integer
      • ZZ_CMAP_PACKED

        private static final java.lang.String ZZ_CMAP_PACKED
        Translates characters to character classes
        See Also:
        Constant Field Values
      • ZZ_CMAP

        private static final char[] ZZ_CMAP
        Translates characters to character classes
      • ZZ_ACTION

        private static final int[] ZZ_ACTION
        Translates DFA states to action switch labels.
      • ZZ_ACTION_PACKED_0

        private static final java.lang.String ZZ_ACTION_PACKED_0
        See Also:
        Constant Field Values
      • ZZ_ROWMAP

        private static final int[] ZZ_ROWMAP
        Translates a state to a row index in the transition table
      • ZZ_ROWMAP_PACKED_0

        private static final java.lang.String ZZ_ROWMAP_PACKED_0
        See Also:
        Constant Field Values
      • ZZ_TRANS

        private static final int[] ZZ_TRANS
        The transition table of the DFA
      • ZZ_TRANS_PACKED_0

        private static final java.lang.String ZZ_TRANS_PACKED_0
        See Also:
        Constant Field Values
      • ZZ_ERROR_MSG

        private static final java.lang.String[] ZZ_ERROR_MSG
      • ZZ_ATTRIBUTE

        private static final int[] ZZ_ATTRIBUTE
        ZZ_ATTRIBUTE[aState] contains the attributes of state aState
      • ZZ_ATTRIBUTE_PACKED_0

        private static final java.lang.String ZZ_ATTRIBUTE_PACKED_0
        See Also:
        Constant Field Values
      • zzReader

        private java.io.Reader zzReader
        the input device
      • zzState

        private int zzState
        the current state of the DFA
      • zzLexicalState

        private int zzLexicalState
        the current lexical state
      • zzBuffer

        private char[] zzBuffer
        this buffer contains the current text to be matched and is the source of the yytext() string
      • zzMarkedPos

        private int zzMarkedPos
        the textposition at the last accepting state
      • zzCurrentPos

        private int zzCurrentPos
        the current text position in the buffer
      • zzStartRead

        private int zzStartRead
        startRead marks the beginning of the yytext() string in the buffer
      • zzEndRead

        private int zzEndRead
        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
      • zzAtBOL

        private boolean zzAtBOL
        zzAtBOL == true iff the scanner is currently at the beginning of a line
      • zzAtEOF

        private boolean zzAtEOF
        zzAtEOF == true iff the scanner is at the EOF
      • zzEOFDone

        private boolean zzEOFDone
        denotes if the user-EOF-code has already been executed
      • zzFinalHighSurrogate

        private int zzFinalHighSurrogate
        The number of occupied positions in zzBuffer beyond zzEndRead. When a lead/high surrogate has been read from the input stream into the final zzBuffer position, this will have a value of 1; otherwise, it will have a value of 0.
      • zzFin

        private boolean[] zzFin
        For the backwards DFA of general lookahead statements
      • writer

        private java.io.Writer writer
      • commentHandlers

        private java.util.List<CommentHandler> commentHandlers
      • classDepth

        private int classDepth
      • parenDepth

        private int parenDepth
      • nestingDepth

        private int nestingDepth
      • annotationDepth

        private int annotationDepth
      • assignmentDepth

        private int assignmentDepth
      • stateDepth

        private int stateDepth
      • codeblockDepth

        private int codeblockDepth
      • stateStack

        private int[] stateStack
      • braceMode

        private int braceMode
      • parenMode

        private int parenMode
      • annotatedElementLine

        private int annotatedElementLine
      • codeBody

        private java.lang.StringBuffer codeBody
      • newMode

        private boolean newMode
      • bracketMode

        private boolean bracketMode
      • anonymousMode

        private boolean anonymousMode
      • enumConstantMode

        private boolean enumConstantMode
      • appendingToCodeBody

        private boolean appendingToCodeBody
    • Constructor Detail

      • JFlexLexer

        public JFlexLexer​(java.io.Reader reader,
                          java.io.Writer writer)
      • JFlexLexer

        public JFlexLexer​(java.io.InputStream stream,
                          java.io.Writer writer)
      • JFlexLexer

        public JFlexLexer​(java.io.Reader in)
        Creates a new scanner
        Parameters:
        in - the java.io.Reader to read input from.
    • Method Detail

      • zzUnpackAction

        private static int[] zzUnpackAction()
      • zzUnpackAction

        private static int zzUnpackAction​(java.lang.String packed,
                                          int offset,
                                          int[] result)
      • zzUnpackRowMap

        private static int[] zzUnpackRowMap()
      • zzUnpackRowMap

        private static int zzUnpackRowMap​(java.lang.String packed,
                                          int offset,
                                          int[] result)
      • zzUnpackTrans

        private static int[] zzUnpackTrans()
      • zzUnpackTrans

        private static int zzUnpackTrans​(java.lang.String packed,
                                         int offset,
                                         int[] result)
      • zzUnpackAttribute

        private static int[] zzUnpackAttribute()
      • zzUnpackAttribute

        private static int zzUnpackAttribute​(java.lang.String packed,
                                             int offset,
                                             int[] result)
      • write

        private void write()
      • write

        private void write​(java.lang.String text)
      • text

        public java.lang.String text()
        Specified by:
        text in interface Lexer
      • lex

        public int lex()
                throws java.io.IOException
        Specified by:
        lex in interface Lexer
        Throws:
        java.io.IOException
      • getLine

        public int getLine()
        Specified by:
        getLine in interface Lexer
      • getColumn

        public int getColumn()
        Specified by:
        getColumn in interface Lexer
      • pushState

        private void pushState​(int newState)
      • popState

        private void popState()
      • getCodeBody

        public java.lang.String getCodeBody()
        Specified by:
        getCodeBody in interface Lexer
      • addCommentHandler

        public void addCommentHandler​(CommentHandler handler)
        Description copied from interface: CommentScanner
        Register this handler as a comment-listener. If scanner hits a comment, all handlers will be triggered.
        Specified by:
        addCommentHandler in interface CommentScanner
        Parameters:
        handler - the commentHandler to add to the CommentScanner
      • parseValue

        private int parseValue​(java.lang.String value,
                               int defaultValue)
      • markAnnotatedElementLine

        private void markAnnotatedElementLine()
      • resetAnnotatedElementLine

        private void resetAnnotatedElementLine()
      • zzUnpackCMap

        private static char[] zzUnpackCMap​(java.lang.String packed)
        Unpacks the compressed character translation table.
        Parameters:
        packed - the packed character translation table
        Returns:
        the unpacked character translation table
      • zzRefill

        private boolean zzRefill()
                          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)
        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
      • 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.
      • zzScanError

        private void zzScanError​(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
      • 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()!
      • zzDoEOF

        private void zzDoEOF()
                      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
      • yylex

        public int yylex()
                  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.
        Returns:
        the next token
        Throws:
        java.io.IOException - if any I/O-Error occurs