/* The following code was generated by JFlex 1.4 on 6/16/17 3:03 PM */

IMPORTANT: must compile with JFlex 1.4, JFlex 1.4.3 seems buggy with look-ahead
How to generate StrptimeLexer.java
1. Download and install JFlex 1.4 from https://sourceforge.net/projects/jflex/files/jflex/1.4/
2. Execute bin/jflex command to generate StrptimeLexer.java
   $ bin/jflex core/src/main/java/org/jruby/lexer/StrptimeLexer.java
/**
 * IMPORTANT: must compile with JFlex 1.4, JFlex 1.4.3 seems buggy with look-ahead
 *
 * How to generate StrptimeLexer.java
 * 1. Download and install JFlex 1.4 from https://sourceforge.net/projects/jflex/files/jflex/1.4/
 * 2. Execute bin/jflex command to generate StrptimeLexer.java
 *    $ bin/jflex core/src/main/java/org/jruby/lexer/StrptimeLexer.java
 */

package org.jruby.lexer;

import org.jruby.util.StrptimeToken;


This class is a scanner generated by 
JFlex 1.4
on 6/16/17 3:03 PM from the specification file
core/src/main/java/org/jruby/lexer/StrptimeLexer.flex
/**
 * This class is a scanner generated by 
 * <a href="http://www.jflex.de/">JFlex</a> 1.4
 * on 6/16/17 3:03 PM from the specification file
 * <tt>core/src/main/java/org/jruby/lexer/StrptimeLexer.flex</tt>
 */
public class StrptimeLexer {

  
This character denotes the end of file /** This character denotes the end of file */
  public static final int YYEOF = -1;

  
initial size of the lookahead buffer /** initial size of the lookahead buffer */
  private static final int ZZ_BUFFERSIZE = 16384;

  
lexical states /** lexical states */
  public static final int CONVERSION = 1;
  public static final int YYINITIAL = 0;

  
Translates characters to character classes
/** 
   * Translates characters to character classes
   */
  private static final String ZZ_CMAP_PACKED = 
    "\12\0\1\0\30\0\1\0\1\0\1\11\5\0\1\1\1\0\1\0"+
    "\2\0\1\0\11\0\1\7\6\0\2\1\1\3\1\1\1\2\2\1"+
    "\2\5\2\0\1\1\1\5\1\1\1\4\3\1\1\5\1\1\3\5"+
    "\2\3\1\1\3\0\2\0\1\0\2\1\1\3\2\5\1\0\2\1"+
    "\1\0\3\1\1\5\1\1\1\0\1\1\1\0\3\1\1\5\1\1"+
    "\1\5\1\3\1\6\1\10\uff85\0";

  
Translates characters to character classes
/** 
   * Translates characters to character classes
   */
  private static final char [] ZZ_CMAP = zzUnpackCMap(ZZ_CMAP_PACKED);

  
Translates DFA states to action switch labels.
/** 
   * Translates DFA states to action switch labels.
   */
  private static final int [] ZZ_ACTION = zzUnpackAction();

  private static final String ZZ_ACTION_PACKED_0 =
    "\2\0\2\1\1\2\3\0\1\3\1\4\3\3\1\5"+
    "\4\0";

  private static int [] zzUnpackAction() {
    int [] result = new int[18];
    int offset = 0;
    offset = zzUnpackAction(ZZ_ACTION_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackAction(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }


  
Translates a state to a row index in the transition table
/** 
   * Translates a state to a row index in the transition table
   */
  private static final int [] ZZ_ROWMAP = zzUnpackRowMap();

  private static final String ZZ_ROWMAP_PACKED_0 =
    "\0\0\0\12\0\24\0\36\0\50\0\62\0\74\0\106"+
    "\0\50\0\50\0\120\0\132\0\144\0\50\0\156\0\170"+
    "\0\202\0\214";

  private static int [] zzUnpackRowMap() {
    int [] result = new int[18];
    int offset = 0;
    offset = zzUnpackRowMap(ZZ_ROWMAP_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackRowMap(String packed, int offset, int [] result) {
    int i = 0;  /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int high = packed.charAt(i++) << 16;
      result[j++] = high | packed.charAt(i++);
    }
    return j;
  }

  
The transition table of the DFA
/** 
   * The transition table of the DFA
   */
  private static final int [] ZZ_TRANS = zzUnpackTrans();

  private static final String ZZ_TRANS_PACKED_0 =
    "\11\3\1\4\1\0\1\5\1\6\1\5\1\7\2\5"+
    "\1\10\1\5\1\0\11\11\1\0\1\11\1\12\1\13"+
    "\1\12\1\14\2\12\1\15\1\12\1\16\15\0\1\5"+
    "\2\0\1\5\10\0\2\5\12\0\1\17\1\5\4\0"+
    "\1\12\2\0\1\12\10\0\2\12\12\0\1\20\1\12"+
    "\10\0\1\21\1\5\10\0\1\22\1\12\11\0\1\5"+
    "\11\0\1\12\1\0";

  private static int [] zzUnpackTrans() {
    int [] result = new int[150];
    int offset = 0;
    offset = zzUnpackTrans(ZZ_TRANS_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackTrans(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      value--;
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }


  /* error codes */
  private static final int ZZ_UNKNOWN_ERROR = 0;
  private static final int ZZ_NO_MATCH = 1;
  private static final int ZZ_PUSHBACK_2BIG = 2;

  /* error messages for the codes above */
  private static final String ZZ_ERROR_MSG[] = {
    "Unkown internal scanner error",
    "Error: could not match input",
    "Error: pushback value was too large"
  };

  
ZZ_ATTRIBUTE[aState] contains the attributes of state aState
/**
   * ZZ_ATTRIBUTE[aState] contains the attributes of state <code>aState</code>
   */
  private static final int [] ZZ_ATTRIBUTE = zzUnpackAttribute();

  private static final String ZZ_ATTRIBUTE_PACKED_0 =
    "\2\0\2\3\1\11\3\0\2\15\3\5\1\11\4\0";

  private static int [] zzUnpackAttribute() {
    int [] result = new int[18];
    int offset = 0;
    offset = zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackAttribute(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }

  
the input device /** the input device */
  private java.io.Reader zzReader;

  
the current state of the DFA /** the current state of the DFA */
  private int zzState;

  
the current lexical state /** the current lexical state */
  private int zzLexicalState = YYINITIAL;

  
this buffer contains the current text to be matched and is
the source of the yytext() string /** this buffer contains the current text to be matched and is
      the source of the yytext() string */
  private char zzBuffer[] = new char[ZZ_BUFFERSIZE];

  
the textposition at the last accepting state /** the textposition at the last accepting state */
  private int zzMarkedPos;

  
the textposition at the last state to be included in yytext /** the textposition at the last state to be included in yytext */
  private int zzPushbackPos;

  
the current text position in the buffer /** the current text position in the buffer */
  private int zzCurrentPos;

  
startRead marks the beginning of the yytext() string in the buffer /** startRead marks the beginning of the yytext() string in the buffer */
  private int zzStartRead;

  
endRead marks the last character in the buffer, that has been read
from input /** endRead marks the last character in the buffer, that has been read
      from input */
  private int zzEndRead;

  
number of newlines encountered up to the start of the matched text /** number of newlines encountered up to the start of the matched text */
  private int yyline;

  
the number of characters up to the start of the matched text /** the number of characters up to the start of the matched text */
  private int yychar;

  
the number of characters from the last newline up to the start of the 
matched text
/**
   * the number of characters from the last newline up to the start of the 
   * matched text
   */
  private int yycolumn;

  
zzAtBOL == true <=> the scanner is currently at the beginning of a line
/** 
   * zzAtBOL == true <=> the scanner is currently at the beginning of a line
   */
  private boolean zzAtBOL = true;

  
zzAtEOF == true <=> the scanner is at the EOF /** zzAtEOF == true <=> the scanner is at the EOF */
  private boolean zzAtEOF;

  /* user code: */
    StringBuilder stringBuf = new StringBuilder();

    public StrptimeToken rawString() {
        String str = stringBuf.toString();
        stringBuf.setLength(0);
        return StrptimeToken.str(str);
    }

    public StrptimeToken directive(char c) {
        StrptimeToken token;
        if (c == 'z') {
            int colons = yylength()-1; // can only be colons except the 'z'
            return StrptimeToken.zoneOffsetColons(colons);
        } else if ((token = StrptimeToken.format(c)) != null) {
            return token;
        } else {
            return StrptimeToken.special(c);
        }
    }


  
Creates a new scanner
There is also a java.io.InputStream version of this constructor.
Params:
in –  the java.io.Reader to read input from./**
   * Creates a new scanner
   * There is also a java.io.InputStream version of this constructor.
   *
   * @param   in  the java.io.Reader to read input from.
   */
  public StrptimeLexer(java.io.Reader in) {
    this.zzReader = in;
  }

  
Creates a new scanner.
There is also java.io.Reader version of this constructor.
Params:
in –  the java.io.Inputstream to read input from./**
   * Creates a new scanner.
   * There is also java.io.Reader version of this constructor.
   *
   * @param   in  the java.io.Inputstream to read input from.
   */
  public StrptimeLexer(java.io.InputStream in) {
    this(new java.io.InputStreamReader(in));
  }

  
Unpacks the compressed character translation table.
Params:
packed –   the packed character translation table
Returns:
        the unpacked character translation table/** 
   * Unpacks the compressed character translation table.
   *
   * @param packed   the packed character translation table
   * @return         the unpacked character translation table
   */
  private static char [] zzUnpackCMap(String packed) {
    char [] map = new char[0x10000];
    int i = 0;  /* index in packed string  */
    int j = 0;  /* index in unpacked array */
    while (i < 110) {
      int  count = packed.charAt(i++);
      char value = packed.charAt(i++);
      do map[j++] = value; while (--count > 0);
    }
    return map;
  }


  
Refills the input buffer.
Throws:
IOException –  if any I/O-Error occurs
Returns:
     false, iff there was new input./**
   * Refills the input buffer.
   *
   * @return      <code>false</code>, iff there was new input.
   * 
   * @exception   java.io.IOException  if any I/O-Error occurs
   */
  private boolean zzRefill() throws java.io.IOException {

    /* first: make room (if you can) */
    if (zzStartRead > 0) {
      System.arraycopy(zzBuffer, zzStartRead,
                       zzBuffer, 0,
                       zzEndRead-zzStartRead);

      /* translate stored positions */
      zzEndRead-= zzStartRead;
      zzCurrentPos-= zzStartRead;
      zzMarkedPos-= zzStartRead;
      zzPushbackPos-= zzStartRead;
      zzStartRead = 0;
    }

    /* is the buffer big enough? */
    if (zzCurrentPos >= zzBuffer.length) {
      /* if not: blow it up */
      char newBuffer[] = new char[zzCurrentPos*2];
      System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
      zzBuffer = newBuffer;
    }

    /* finally: fill the buffer with new input */
    int numRead = zzReader.read(zzBuffer, zzEndRead,
                                            zzBuffer.length-zzEndRead);

    if (numRead < 0) {
      return true;
    }
    else {
      zzEndRead+= numRead;
      return false;
    }
  }

    
  
Closes the input stream.
/**
   * Closes the input stream.
   */
  public final void yyclose() throws java.io.IOException {
    zzAtEOF = true;            /* indicate end of file */
    zzEndRead = zzStartRead;  /* invalidate buffer    */

    if (zzReader != null)
      zzReader.close();
  }


  
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.
Params:
reader –   the new input stream/**
   * 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 
   * <b>cannot</b> be reused (internal buffer is discarded and lost).
   * Lexical state is set to <tt>ZZ_INITIAL</tt>.
   *
   * @param reader   the new input stream 
   */
  public final void yyreset(java.io.Reader reader) {
    zzReader = reader;
    zzAtBOL  = true;
    zzAtEOF  = false;
    zzEndRead = zzStartRead = 0;
    zzCurrentPos = zzMarkedPos = zzPushbackPos = 0;
    yyline = yychar = yycolumn = 0;
    zzLexicalState = YYINITIAL;
  }


  
Returns the current lexical state.
/**
   * Returns the current lexical state.
   */
  public final int yystate() {
    return zzLexicalState;
  }


  
Enters a new lexical state
Params:
newState – the new lexical state/**
   * Enters a new lexical state
   *
   * @param newState the new lexical state
   */
  public final void yybegin(int newState) {
    zzLexicalState = newState;
  }


  
Returns the text matched by the current regular expression.
/**
   * Returns the text matched by the current regular expression.
   */
  public final String yytext() {
    return new String( zzBuffer, zzStartRead, zzMarkedPos-zzStartRead );
  }


  
Returns the character at position pos from the 
matched text. 
It is equivalent to yytext().charAt(pos), but faster
Params:
pos – the position of the character to fetch. 
           A value from 0 to yylength()-1.
Returns:
the character at position pos/**
   * Returns the character at position <tt>pos</tt> from the 
   * matched text. 
   * 
   * It is equivalent to yytext().charAt(pos), but faster
   *
   * @param pos the position of the character to fetch. 
   *            A value from 0 to yylength()-1.
   *
   * @return the character at position pos
   */
  public final char yycharat(int pos) {
    return zzBuffer[zzStartRead+pos];
  }


  
Returns the length of the matched text region.
/**
   * Returns the length of the matched text region.
   */
  public final int yylength() {
    return zzMarkedPos-zzStartRead;
  }


  
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.
Params:
errorCode –  the code of the errormessage to display/**
   * 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.
   *
   * @param   errorCode  the code of the errormessage to display
   */
  private void zzScanError(int errorCode) {
    String message;
    try {
      message = ZZ_ERROR_MSG[errorCode];
    }
    catch (ArrayIndexOutOfBoundsException e) {
      message = ZZ_ERROR_MSG[ZZ_UNKNOWN_ERROR];
    }

    throw new Error(message);
  } 


  
Pushes the specified amount of characters back into the input stream.
They will be read again by then next call of the scanning method
Params:
number –  the number of characters to be read again.
               This number must not be greater than yylength()!/**
   * Pushes the specified amount of characters back into the input stream.
   *
   * They will be read again by then next call of the scanning method
   *
   * @param number  the number of characters to be read again.
   *                This number must not be greater than yylength()!
   */
  public void yypushback(int number)  {
    if ( number > yylength() )
      zzScanError(ZZ_PUSHBACK_2BIG);

    zzMarkedPos -= number;
  }


  
Resumes scanning until the next regular expression is matched,
the end of input is encountered or an I/O-Error occurs.
Throws:
IOException –  if any I/O-Error occurs
Returns:
     the next token/**
   * Resumes scanning until the next regular expression is matched,
   * the end of input is encountered or an I/O-Error occurs.
   *
   * @return      the next token
   * @exception   java.io.IOException  if any I/O-Error occurs
   */
  public org.jruby.util.StrptimeToken yylex() throws java.io.IOException {
    int zzInput;
    int zzAction;

    // cached fields:
    int zzCurrentPosL;
    int zzMarkedPosL;
    int zzEndReadL = zzEndRead;
    char [] zzBufferL = zzBuffer;
    char [] zzCMapL = ZZ_CMAP;

    int [] zzTransL = ZZ_TRANS;
    int [] zzRowMapL = ZZ_ROWMAP;
    int [] zzAttrL = ZZ_ATTRIBUTE;
    int zzPushbackPosL = zzPushbackPos = -1;
    boolean zzWasPushback;

    while (true) {
      zzMarkedPosL = zzMarkedPos;

      zzAction = -1;

      zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
  
      zzState = zzLexicalState;

      zzWasPushback = false;

      zzForAction: {
        while (true) {
    
          if (zzCurrentPosL < zzEndReadL)
            zzInput = zzBufferL[zzCurrentPosL++];
          else if (zzAtEOF) {
            zzInput = YYEOF;
            break zzForAction;
          }
          else {
            // store back cached positions
            zzCurrentPos  = zzCurrentPosL;
            zzMarkedPos   = zzMarkedPosL;
            zzPushbackPos = zzPushbackPosL;
            boolean eof = zzRefill();
            // get translated positions and possibly new buffer
            zzCurrentPosL  = zzCurrentPos;
            zzMarkedPosL   = zzMarkedPos;
            zzBufferL      = zzBuffer;
            zzEndReadL     = zzEndRead;
            zzPushbackPosL = zzPushbackPos;
            if (eof) {
              zzInput = YYEOF;
              break zzForAction;
            }
            else {
              zzInput = zzBufferL[zzCurrentPosL++];
            }
          }
          int zzNext = zzTransL[ zzRowMapL[zzState] + zzCMapL[zzInput] ];
          if (zzNext == -1) break zzForAction;
          zzState = zzNext;

          int zzAttributes = zzAttrL[zzState];
          if ( (zzAttributes & 2) == 2 )
            zzPushbackPosL = zzCurrentPosL;

          if ( (zzAttributes & 1) == 1 ) {
            zzWasPushback = (zzAttributes & 4) == 4;
            zzAction = zzState;
            zzMarkedPosL = zzCurrentPosL;
            if ( (zzAttributes & 8) == 8 ) break zzForAction;
          }

        }
      }

      // store back cached position
      zzMarkedPos = zzMarkedPosL;
      if (zzWasPushback)
        zzMarkedPos = zzPushbackPosL;

      switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
        case 2: 
          { yybegin(YYINITIAL); return directive(yycharat(yylength()-1));
          }
        case 6: break;
        case 3: 
          { stringBuf.append(yycharat(0));
          }
        case 7: break;
        case 5: 
          { return StrptimeToken.str("%");
          }
        case 8: break;
        case 1: 
          { stringBuf.append(yycharat(0)); return rawString();
          }
        case 9: break;
        case 4: 
          { yybegin(CONVERSION);
          }
        case 10: break;
        default: 
          if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
            zzAtEOF = true;
            return null;
          } 
          else {
            zzScanError(ZZ_NO_MATCH);
          }
      }
    }
  }


}