| |
| /** This character denotes the end of file */ |
| public static final int YYEOF = LexerInput.EOF; |
| |
| /** initial size of the lookahead buffer */ |
| --- private static final int ZZ_BUFFERSIZE = ...; |
| |
| /** lexical states */ |
| --- lexical states, charmap |
| |
| /* 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" |
| }; |
| |
| --- isFinal list |
| /** the input device */ |
| private java.io.Reader zzReader; |
| |
| /** the current state of the DFA */ |
| private int zzState; |
| |
| /** 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 */ |
| private char zzBuffer[] = new char[ZZ_BUFFERSIZE]; |
| |
| /** the textposition at the last accepting state */ |
| private int zzMarkedPos; |
| |
| /** the textposition at the last state to be included in yytext */ |
| private int zzPushbackPos; |
| |
| /** the current text position in the buffer */ |
| private int zzCurrentPos; |
| |
| /** 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 */ |
| private int zzEndRead; |
| |
| /** 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 */ |
| private int yychar; |
| |
| /** |
| * 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 |
| */ |
| private boolean zzAtBOL = true; |
| |
| /** zzAtEOF == true <=> the scanner is at the EOF */ |
| private boolean zzAtEOF = false; |
| |
| --- user class code |
| |
| /** |
| * 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. |
| */ |
| --- constructor declaration |
| |
| |
| |
| /** |
| * 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 |
| * <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. |
| */ |
| public final int yystate() { |
| return zzLexicalState; |
| } |
| |
| |
| /** |
| * 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. |
| */ |
| public final String yytext() { |
| return input.readText().toString(); |
| } |
| |
| |
| /** |
| * 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 input.readText().charAt(pos); |
| } |
| |
| |
| /** |
| * Returns the length of the matched text region. |
| */ |
| public final int yylength() { |
| return input.readLength(); |
| } |
| |
| |
| /** |
| * 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 |
| */ |
| --- zzScanError declaration |
| String message; |
| try { |
| message = ZZ_ERROR_MSG[errorCode]; |
| } |
| catch (ArrayIndexOutOfBoundsException e) { |
| message = ZZ_ERROR_MSG[ZZ_UNKNOWN_ERROR]; |
| } |
| |
| --- throws clause |
| } |
| |
| |
| /** |
| * 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()! |
| */ |
| --- yypushback decl (contains zzScanError exception) |
| if ( number > yylength() ) |
| zzScanError(ZZ_PUSHBACK_2BIG); |
| |
| input.backup(number); |
| //zzMarkedPos -= number; |
| } |
| |
| |
| --- zzDoEOF |
| /** |
| * 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 |
| */ |
| --- yylex declaration |
| int zzInput; |
| int zzAction; |
| |
| // cached fields: |
| //int zzCurrentPosL; |
| //int zzMarkedPosL; |
| //int zzEndReadL = zzEndRead; |
| //char [] zzBufferL = zzBuffer; |
| char [] zzCMapL = ZZ_CMAP; |
| |
| --- local declarations |
| |
| while (true) { |
| //zzMarkedPosL = zzMarkedPos; |
| |
| --- start admin (line, char, col count) |
| zzAction = -1; |
| |
| //zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL; |
| int tokenLength = 0; |
| |
| --- start admin (lexstate etc) |
| |
| zzForAction: { |
| while (true) { |
| zzInput = input.read(); |
| |
| if(zzInput == LexerInput.EOF) { |
| //end of input reached |
| zzInput = YYEOF; |
| break zzForAction; |
| //notice: currently LexerInput.EOF == YYEOF |
| } |
| |
| --- line, col, char count, next transition, isFinal action |
| zzAction = zzState; |
| tokenLength = input.readLength(); |
| --- line count update |
| } |
| |
| } |
| } |
| |
| // store back cached position |
| if(zzInput != YYEOF) { |
| input.backup(input.readLength() - tokenLength); |
| } |
| --- char count update |
| |
| --- actions |
| default: |
| if (zzInput == YYEOF) |
| //zzAtEOF = true; |
| --- eofvalue |
| |
| else { |
| --- no match |
| } |
| } |
| } |
| } |
| |
| --- main |
| |
| } |