+/* The following code was generated by JFlex 1.6.1 */
+
+package org.simantics.scl.compiler.parser.grammar.input;
+
+import org.simantics.scl.compiler.parser.grammar.input.Token;
+
+
+/**
+ * This class is a scanner generated by
+ * <a href="http://www.jflex.de/">JFlex</a> 1.6.1
+ * from the specification file <tt>C:/Users/hannu/git/scl/org.simantics.parser/src/org/simantics/parser/grammar/input2/GrammarLexer.flex</tt>
+ */
+public class GrammarLexer {
+
+ /** This character denotes the end of file */
+ public static final int YYEOF = -1;
+
+ /** initial size of the lookahead buffer */
+ private static final int ZZ_BUFFERSIZE = 16384;
+
+ /** lexical states */
+ public static final int YYINITIAL = 0;
+
+ /**
+ * 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
+ */
+ private static final int ZZ_LEXSTATE[] = {
+ 0, 0
+ };
+
+ /**
+ * Translates characters to character classes
+ */
+ private static final String ZZ_CMAP_PACKED =
+ "\11\0\1\4\1\6\1\36\1\36\1\6\22\0\1\4\2\0\1\13"+
+ "\4\0\1\15\1\16\1\7\1\17\1\14\2\0\1\5\12\1\1\0"+
+ "\1\12\1\0\1\10\1\0\1\20\1\0\32\3\4\0\1\1\1\0"+
+ "\1\24\1\2\1\35\1\33\1\32\1\30\1\2\1\27\1\21\2\2"+
+ "\1\25\1\2\1\22\3\2\1\31\1\26\1\23\1\34\5\2\1\0"+
+ "\1\11\10\0\1\36\u1fa2\0\1\36\1\36\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\uffff\0\udfe6\0";
+
+ /**
+ * Translates characters to character classes
+ */
+ private static final char [] ZZ_CMAP = zzUnpackCMap(ZZ_CMAP_PACKED);
+
+ /**
+ * Translates DFA states to action switch labels.
+ */
+ private static final int [] ZZ_ACTION = zzUnpackAction();
+
+ private static final String ZZ_ACTION_PACKED_0 =
+ "\1\0\1\1\1\2\1\3\1\4\1\1\1\5\1\6"+
+ "\1\7\1\10\1\11\1\12\1\13\1\14\1\15\1\16"+
+ "\3\2\1\4\1\0\3\2\1\0\3\2\1\4\4\2"+
+ "\1\17\2\2\1\20\1\21";
+
+ private static int [] zzUnpackAction() {
+ int [] result = new int[38];
+ 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
+ */
+ private static final int [] ZZ_ROWMAP = zzUnpackRowMap();
+
+ private static final String ZZ_ROWMAP_PACKED_0 =
+ "\0\0\0\37\0\76\0\135\0\174\0\233\0\37\0\37"+
+ "\0\37\0\37\0\37\0\37\0\37\0\37\0\37\0\37"+
+ "\0\272\0\331\0\370\0\u0117\0\u0136\0\u0155\0\u0174\0\u0193"+
+ "\0\u01b2\0\u01d1\0\u01f0\0\u020f\0\37\0\u022e\0\u024d\0\u026c"+
+ "\0\u028b\0\76\0\u02aa\0\u02c9\0\76\0\76";
+
+ private static int [] zzUnpackRowMap() {
+ int [] result = new int[38];
+ 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
+ */
+ private static final int [] ZZ_TRANS = zzUnpackTrans();
+
+ private static final String ZZ_TRANS_PACKED_0 =
+ "\2\2\1\3\1\4\1\5\1\6\1\5\1\7\1\10"+
+ "\1\11\1\12\1\13\1\14\1\15\1\16\1\17\1\20"+
+ "\1\21\4\3\1\22\2\3\1\23\4\3\41\0\3\3"+
+ "\15\0\15\3\2\0\3\4\15\0\15\4\5\0\1\5"+
+ "\1\0\1\5\35\0\1\24\1\0\1\25\30\0\3\3"+
+ "\15\0\1\3\1\26\13\3\2\0\3\3\15\0\6\3"+
+ "\1\27\6\3\2\0\3\3\15\0\11\3\1\30\3\3"+
+ "\1\0\6\24\1\0\30\24\7\25\1\31\27\25\1\0"+
+ "\3\3\15\0\1\32\14\3\2\0\3\3\15\0\1\33"+
+ "\14\3\2\0\3\3\15\0\12\3\1\34\2\3\1\0"+
+ "\5\25\1\35\1\25\1\31\27\25\1\0\3\3\15\0"+
+ "\2\3\1\36\12\3\2\0\3\3\15\0\7\3\1\37"+
+ "\5\3\2\0\3\3\15\0\13\3\1\40\1\3\2\0"+
+ "\3\3\15\0\1\41\14\3\2\0\3\3\15\0\2\3"+
+ "\1\42\12\3\2\0\3\3\15\0\14\3\1\43\2\0"+
+ "\3\3\15\0\3\3\1\44\11\3\2\0\3\3\15\0"+
+ "\11\3\1\45\3\3\2\0\3\3\15\0\4\3\1\46"+
+ "\10\3\1\0";
+
+ private static int [] zzUnpackTrans() {
+ int [] result = new int[744];
+ 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[] = {
+ "Unknown internal scanner error",
+ "Error: could not match input",
+ "Error: pushback value was too large"
+ };
+
+ /**
+ * 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 =
+ "\1\0\1\11\4\1\12\11\4\1\1\0\3\1\1\0"+
+ "\3\1\1\11\11\1";
+
+ private static int [] zzUnpackAttribute() {
+ int [] result = new int[38];
+ 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 */
+ 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 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;
+
+ /** denotes if the user-EOF-code has already been executed */
+ private boolean zzEOFDone;
+
+ /**
+ * 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.
+ */
+ private int zzFinalHighSurrogate = 0;
+
+ /* user code: */
+ private Token sym(int id) {
+ return new Token(id, yychar, yychar+yylength(), yytext());
+ }
+
+
+ /**
+ * Creates a new scanner
+ *
+ * @param in the java.io.Reader to read input from.
+ */
+ public GrammarLexer(java.io.Reader in) {
+ this.zzReader = in;
+ }
+
+
+ /**
+ * 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[0x110000];
+ int i = 0; /* index in packed string */
+ int j = 0; /* index in unpacked array */
+ while (i < 146) {
+ int count = packed.charAt(i++);
+ char value = packed.charAt(i++);
+ do map[j++] = value; while (--count > 0);
+ }
+ return map;
+ }
+
+
+ /**
+ * 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) {
+ zzEndRead += zzFinalHighSurrogate;
+ zzFinalHighSurrogate = 0;
+ System.arraycopy(zzBuffer, zzStartRead,
+ zzBuffer, 0,
+ zzEndRead-zzStartRead);
+
+ /* translate stored positions */
+ zzEndRead-= zzStartRead;
+ zzCurrentPos-= zzStartRead;
+ zzMarkedPos-= zzStartRead;
+ zzStartRead = 0;
+ }
+
+ /* is the buffer big enough? */
+ if (zzCurrentPos >= zzBuffer.length - zzFinalHighSurrogate) {
+ /* if not: blow it up */
+ char newBuffer[] = new char[zzBuffer.length*2];
+ System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
+ zzBuffer = newBuffer;
+ zzEndRead += zzFinalHighSurrogate;
+ zzFinalHighSurrogate = 0;
+ }
+
+ /* fill the buffer with new input */
+ int requested = zzBuffer.length - zzEndRead;
+ int numRead = zzReader.read(zzBuffer, zzEndRead, requested);
+
+ /* not supposed to occur according to specification of java.io.Reader */
+ if (numRead == 0) {
+ throw new java.io.IOException("Reader returned 0 characters. See JFlex examples for workaround.");
+ }
+ if (numRead > 0) {
+ zzEndRead += numRead;
+ /* If numRead == requested, we might have requested to few chars to
+ encode a full Unicode character. We assume that a Reader would
+ otherwise never return half characters. */
+ if (numRead == requested) {
+ if (Character.isHighSurrogate(zzBuffer[zzEndRead - 1])) {
+ --zzEndRead;
+ zzFinalHighSurrogate = 1;
+ }
+ }
+ /* potentially more input available */
+ return false;
+ }
+
+ /* numRead < 0 ==> end of stream */
+ return true;
+ }
+
+
+ /**
+ * 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>.
+ *
+ * Internal scan buffer is resized down to its initial length, if it has grown.
+ *
+ * @param reader the new input stream
+ */
+ public final void yyreset(java.io.Reader reader) {
+ zzReader = reader;
+ zzAtBOL = true;
+ zzAtEOF = false;
+ zzEOFDone = false;
+ zzEndRead = zzStartRead = 0;
+ zzCurrentPos = zzMarkedPos = 0;
+ zzFinalHighSurrogate = 0;
+ yyline = yychar = yycolumn = 0;
+ zzLexicalState = YYINITIAL;
+ if (zzBuffer.length > ZZ_BUFFERSIZE)
+ zzBuffer = new char[ZZ_BUFFERSIZE];
+ }
+
+
+ /**
+ * 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 new String( zzBuffer, zzStartRead, zzMarkedPos-zzStartRead );
+ }
+
+
+ /**
+ * 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.
+ */
+ 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.
+ *
+ * @param errorCode the code of the errormessage to display
+ */
+ private void zzScanError(int errorCode) throws RuntimeException {
+ String message;
+ try {
+ message = ZZ_ERROR_MSG[errorCode];
+ }
+ catch (ArrayIndexOutOfBoundsException e) {
+ message = ZZ_ERROR_MSG[ZZ_UNKNOWN_ERROR];
+ }
+
+ throw new RuntimeException(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
+ *
+ * @param number the number of characters to be read again.
+ * This number must not be greater than yylength()!
+ */
+ public void yypushback(int number) throws RuntimeException {
+ 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.
+ *
+ * @return the next token
+ * @exception java.io.IOException if any I/O-Error occurs
+ */
+ public Token nextToken() throws java.io.IOException, RuntimeException, RuntimeException {
+ 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;
+
+ while (true) {
+ zzMarkedPosL = zzMarkedPos;
+
+ yychar+= zzMarkedPosL-zzStartRead;
+
+ zzAction = -1;
+
+ zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
+
+ zzState = ZZ_LEXSTATE[zzLexicalState];
+
+ // set up zzAction for empty match case:
+ int zzAttributes = zzAttrL[zzState];
+ if ( (zzAttributes & 1) == 1 ) {
+ zzAction = zzState;
+ }
+
+
+ zzForAction: {
+ while (true) {
+
+ if (zzCurrentPosL < zzEndReadL) {
+ zzInput = Character.codePointAt(zzBufferL, zzCurrentPosL, zzEndReadL);
+ zzCurrentPosL += Character.charCount(zzInput);
+ }
+ else if (zzAtEOF) {
+ zzInput = YYEOF;
+ break zzForAction;
+ }
+ else {
+ // store back cached positions
+ zzCurrentPos = zzCurrentPosL;
+ zzMarkedPos = zzMarkedPosL;
+ boolean eof = zzRefill();
+ // get translated positions and possibly new buffer
+ zzCurrentPosL = zzCurrentPos;
+ zzMarkedPosL = zzMarkedPos;
+ zzBufferL = zzBuffer;
+ zzEndReadL = zzEndRead;
+ if (eof) {
+ zzInput = YYEOF;
+ break zzForAction;
+ }
+ else {
+ zzInput = Character.codePointAt(zzBufferL, zzCurrentPosL, zzEndReadL);
+ zzCurrentPosL += Character.charCount(zzInput);
+ }
+ }
+ int zzNext = zzTransL[ zzRowMapL[zzState] + zzCMapL[zzInput] ];
+ if (zzNext == -1) break zzForAction;
+ zzState = zzNext;
+
+ zzAttributes = zzAttrL[zzState];
+ if ( (zzAttributes & 1) == 1 ) {
+ zzAction = zzState;
+ zzMarkedPosL = zzCurrentPosL;
+ if ( (zzAttributes & 8) == 8 ) break zzForAction;
+ }
+
+ }
+ }
+
+ // store back cached position
+ zzMarkedPos = zzMarkedPosL;
+
+ if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
+ zzAtEOF = true;
+ { return sym(GrammarTerminals.EOF);
+ }
+ }
+ else {
+ switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
+ case 1:
+ { throw new RuntimeException("Illegal character '" + yytext() + "'.");
+ }
+ case 18: break;
+ case 2:
+ { return sym(GrammarTerminals.NONTERMINAL);
+ }
+ case 19: break;
+ case 3:
+ { return sym(GrammarTerminals.TERMINAL);
+ }
+ case 20: break;
+ case 4:
+ {
+ }
+ case 21: break;
+ case 5:
+ { return sym(GrammarTerminals.STAR);
+ }
+ case 22: break;
+ case 6:
+ { return sym(GrammarTerminals.EQUALS);
+ }
+ case 23: break;
+ case 7:
+ { return sym(GrammarTerminals.BAR);
+ }
+ case 24: break;
+ case 8:
+ { return sym(GrammarTerminals.SEMICOLON);
+ }
+ case 25: break;
+ case 9:
+ { return sym(GrammarTerminals.HASH);
+ }
+ case 26: break;
+ case 10:
+ { return sym(GrammarTerminals.COMMA);
+ }
+ case 27: break;
+ case 11:
+ { return sym(GrammarTerminals.LPAREN);
+ }
+ case 28: break;
+ case 12:
+ { return sym(GrammarTerminals.RPAREN);
+ }
+ case 29: break;
+ case 13:
+ { return sym(GrammarTerminals.PLUS);
+ }
+ case 30: break;
+ case 14:
+ { return sym(GrammarTerminals.OPTIONAL);
+ }
+ case 31: break;
+ case 15:
+ { return sym(GrammarTerminals.SHIFT);
+ }
+ case 32: break;
+ case 16:
+ { return sym(GrammarTerminals.REDUCE);
+ }
+ case 33: break;
+ case 17:
+ { return sym(GrammarTerminals.INITIAL);
+ }
+ case 34: break;
+ default:
+ zzScanError(ZZ_NO_MATCH);
+ }
+ }
+ }
+ }
+
+
+}
Code Review / simantics / platform.git / commitdiff