Package jflex

Class LexScan

java.lang.Object
jflex.LexScan
All Implemented Interfaces:
java_cup.runtime.Scanner, sym

public final class LexScan extends Object implements sym, java_cup.runtime.Scanner
This class is a scanner generated by JFlex 1.7.0 from the specification file src/main/jflex/LexScan.flex
  • Field Details

    • YYEOF

      public static final int YYEOF
      This character denotes the end of file
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    • ZZ_BUFFERSIZE

      private static final int ZZ_BUFFERSIZE
      initial size of the lookahead buffer
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    • YYINITIAL

      public static final int YYINITIAL
      lexical states
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    • COMMENT

      public static final int COMMENT
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    • STATELIST

      public static final int STATELIST
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    • MACROS

      public static final int MACROS
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    • REGEXPSTART

      public static final int REGEXPSTART
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    • REGEXP

      public static final int REGEXP
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    • JAVA_CODE

      public static final int JAVA_CODE
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    • STATES

      public static final int STATES
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    • STRING_CONTENT

      public static final int STRING_CONTENT
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    • CHARCLASS

      public static final int CHARCLASS
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    • COPY

      public static final int COPY
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    • REPEATEXP

      public static final int REPEATEXP
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    • EATWSPNL

      public static final int EATWSPNL
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    • CTOR_ARG

      public static final int CTOR_ARG
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    • REGEXP_CODEPOINT_SEQUENCE

      public static final int REGEXP_CODEPOINT_SEQUENCE
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    • STRING_CODEPOINT_SEQUENCE

      public static final int STRING_CODEPOINT_SEQUENCE
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    • CHARCLASS_CODEPOINT

      public static final int CHARCLASS_CODEPOINT
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    • 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 String ZZ_CMAP_PACKED
      Translates characters to character classes
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    • 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 String ZZ_ACTION_PACKED_0
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    • 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 String ZZ_ROWMAP_PACKED_0
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    • ZZ_TRANS

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

      private static final String ZZ_TRANS_PACKED_0
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    • ZZ_UNKNOWN_ERROR

      private static final int ZZ_UNKNOWN_ERROR
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    • ZZ_NO_MATCH

      private static final int ZZ_NO_MATCH
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    • ZZ_PUSHBACK_2BIG

      private static final int ZZ_PUSHBACK_2BIG
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    • ZZ_ERROR_MSG

      private static final 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 String ZZ_ATTRIBUTE_PACKED_0
      See Also:
    • zzReader

      private 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.
    • zzStreams

      private Stack<LexScan.ZzFlexStreamInfo> zzStreams
      the stack of open (nested) input streams to read from
    • balance

      int balance
    • commentbalance

      int commentbalance
    • action_line

      int action_line
    • bufferSize

      int bufferSize
    • file

      File file
    • files

      Stack<File> files
    • userCode

      StringBuilder userCode
    • classCode

      String classCode
    • initCode

      String initCode
    • initThrow

      String initThrow
    • eofCode

      String eofCode
    • eofThrow

      String eofThrow
    • lexThrow

      String lexThrow
    • eofVal

      String eofVal
    • scanErrorException

      String scanErrorException
    • cupSymbol

      String cupSymbol
    • actionText

      StringBuilder actionText
    • string

    • unicodeProperties

      private UnicodeProperties unicodeProperties
    • charCount

      boolean charCount
    • lineCount

      boolean lineCount
    • columnCount

      boolean columnCount
    • cupCompatible

      boolean cupCompatible
    • cup2Compatible

      boolean cup2Compatible
    • cupDebug

      boolean cupDebug
    • isInteger

      boolean isInteger
    • isIntWrap

      boolean isIntWrap
    • isYYEOF

      boolean isYYEOF
    • notUnix

      boolean notUnix
    • isPublic

      boolean isPublic
    • isFinal

      boolean isFinal
    • isAbstract

      boolean isAbstract
    • bolUsed

      boolean bolUsed
    • standalone

      boolean standalone
    • debugOption

      boolean debugOption
    • caseless

      boolean caseless
    • inclusive_states

      boolean inclusive_states
    • eofclose

      boolean eofclose
    • isASCII

      boolean isASCII
    • isImplementing

      String isImplementing
    • isExtending

      String isExtending
    • className

      String className
    • functionName

      String functionName
    • tokenType

      String tokenType
    • visibility

      String visibility
    • ctorArgs

      List<String> ctorArgs
    • ctorTypes

      List<String> ctorTypes
    • states

    • actions

      List<Action> actions
    • nextState

      private int nextState
    • macroDefinition

      boolean macroDefinition
    • t

    • charClasses

      private CharClasses charClasses
  • Constructor Details

    • LexScan

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

    • zzUnpackAction

      private static int[] zzUnpackAction()
    • zzUnpackAction

      private static int zzUnpackAction(String packed, int offset, int[] result)
    • zzUnpackRowMap

      private static int[] zzUnpackRowMap()
    • zzUnpackRowMap

      private static int zzUnpackRowMap(String packed, int offset, int[] result)
    • zzUnpackTrans

      private static int[] zzUnpackTrans()
    • zzUnpackTrans

      private static int zzUnpackTrans(String packed, int offset, int[] result)
    • zzUnpackAttribute

      private static int[] zzUnpackAttribute()
    • zzUnpackAttribute

      private static int zzUnpackAttribute(String packed, int offset, int[] result)
    • getCharClasses

      public CharClasses getCharClasses()
    • currentLine

      public int currentLine()
    • setFile

      public void setFile(File file)
    • symbol

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

      private java_cup.runtime.Symbol symbol(int type)
    • symbol_countUpdate

      private java_cup.runtime.Symbol symbol_countUpdate(int type, Object value)
    • makeMacroIdent

      private String makeMacroIdent()
    • conc

      public static String conc(Object a, Object b)
    • concExc

      public static String concExc(Object a, Object b)
    • getUnicodeProperties

      public UnicodeProperties getUnicodeProperties()
    • populateDefaultVersionUnicodeProperties

      private void populateDefaultVersionUnicodeProperties()
    • includeFile

      private void includeFile(String filePath)
    • zzUnpackCMap

      private static char[] zzUnpackCMap(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 IOException
      Refills the input buffer.
      Returns:
      false, iff there was new input.
      Throws:
      IOException - if any I/O-Error occurs
    • 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 invalid input: '<'> action).
      Parameters:
      reader - the new input stream to read from
      See Also:
    • 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:
    • 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:
    • 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.
    • 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 IOException
      Contains user EOF-code, which will be executed exactly once, when the end of file is reached
      Throws:
      IOException
    • next_token

      public java_cup.runtime.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 java_cup.runtime.Scanner
      Returns:
      the next token
      Throws:
      IOException - if any I/O-Error occurs
    • getTokenName

      private String getTokenName(int token)
      Converts an int token code into the name of the token by reflection on the cup symbol class/interface sym This code was contributed by Karl Meissner invalid input: '<'meissnersd@yahoo.com>
    • debug_next_token

      public java_cup.runtime.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 invalid input: '<'meissnersd@yahoo.com>
      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.