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TaschenrechnerParser/TschenrechnerParser.java
Schleicher Laurenz fa28bd24fe Taschenrechner
2023-12-06 13:21:19 +01:00

632 lines
22 KiB
Java
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// created by jay 0.8 (c) 1998 Axel.Schreiner@informatik.uni-osnabrueck.de
// line 1 "TschenrechnerParser.jay"
class TschenrechnerParser {
// line 7 "-"
yyError yytemperror = new yyError();
public final int yyErrorCode = yytemperror.tokennr;
/** thrown for irrecoverable syntax errors and stack overflow.
*/
public static class yyException extends java.lang.Exception {
public yyException (String message) {
super(message);
}
}
/** must be implemented by a scanner object to supply input to the parser.
*/
public interface yyInput {
/** move on to next token.
@return false if positioned beyond tokens.
@throws IOException on input error.
*/
/** modified by diho, 10.04.2004 */
yyTokenclass advance () throws java.io.IOException;
/** classifies current token.
Should not be called if advance() returned false.
@return current %token or single character.
*/
/** modified by diho, 10.04.2004 token () is not longer necessary,
advance () supplies token or null
int token (); */
/** associated with current token.
Should not be called if advance() returned false.
@return value for token().
*/
/** modified by diho, 10.04.2004 value () is not longer necessary,
Token value can be retrieved from Token itself.
Object value ();*/
}
/** simplified error message.
@see <a href="#yyerror(java.lang.String, java.lang.String[])">yyerror</a>
*/
public void yyerror (String message) {
yyerror(message, null);
}
/** (syntax) error message.
Can be overwritten to control message format.
@param message text to be displayed.
@param expected vector of acceptable tokens, if available.
*/
public void yyerror (String message, String[] expected) {
if (expected != null && expected.length > 0) {
System.err.print(message+", expecting");
for (int n = 0; n < expected.length; ++ n)
System.err.print(" "+expected[n]);
System.err.println();
} else
System.err.println(message);
}
/** debugging support, requires the package jay.yydebug.
Set to null to suppress debugging messages.
*/
//t protected jay.yydebug.yyDebug yydebug;
protected static final int yyFinal = 3;
/** index-checked interface to yyName[].
@param token single character or %token value.
@return token name or [illegal] or [unknown].
*/
//t public static final String yyname (int token) {
//t if (token < 0 || token > YyNameClass.yyName.length) return "[illegal]";
//t String name;
//t if ((name = YyNameClass.yyName[token]) != null) return name;
//t return "[unknown]";
//t }
/** computes list of expected tokens on error by tracing the tables.
@param state for which to compute the list.
@return list of token names.
*/
protected String[] yyExpecting (int state) {
int token, n, len = 0;
boolean[] ok = new boolean[YyNameClass.yyName.length];
if ((n = YySindexClass.yySindex[state]) != 0)
for (token = n < 0 ? -n : 0;
token < YyNameClass.yyName.length && n+token < YyTableClass.yyTable.length; ++ token)
if (YyCheckClass.yyCheck[n+token] == token && !ok[token] && YyNameClass.yyName[token] != null) {
++ len;
ok[token] = true;
}
if ((n = YyRindexClass.yyRindex[state]) != 0)
for (token = n < 0 ? -n : 0;
token < YyNameClass.yyName.length && n+token < YyTableClass.yyTable.length; ++ token)
if (YyCheckClass.yyCheck[n+token] == token && !ok[token] && YyNameClass.yyName[token] != null) {
++ len;
ok[token] = true;
}
String result[] = new String[len];
for (n = token = 0; n < len; ++ token)
if (ok[token]) result[n++] = YyNameClass.yyName[token];
return result;
}
/** the generated parser, with debugging messages.
Maintains a state and a value stack, currently with fixed maximum size.
@param yyLex scanner.
@param yydebug debug message writer implementing yyDebug, or null.
@return result of the last reduction, if any.
@throws yyException on irrecoverable parse error.
*/
public Object yyparse (yyInput yyLex, Object yydebug)
throws java.io.IOException, yyException {
//t this.yydebug = (jay.yydebug.yyDebug)yydebug;
return yyparse(yyLex);
}
/** initial size and increment of the state/value stack [default 256].
This is not final so that it can be overwritten outside of invocations
of yyparse().
*/
protected int yyMax;
/** executed at the beginning of a reduce action.
Used as $$ = yyDefault($1), prior to the user-specified action, if any.
Can be overwritten to provide deep copy, etc.
@param first value for $1, or null.
@return first.
*/
protected Object yyDefault (Object first) {
return first;
}
/** the generated parser.
Maintains a state and a value stack, currently with fixed maximum size.
@param yyLex scanner.
@return result of the last reduction, if any.
@throws yyException on irrecoverable parse error.
*/
public Object yyparse (yyInput yyLex)
throws java.io.IOException, yyException {
YyCheckClass.yyCheckInit(); // initial yyCheck eingefuegt PL 05-03-08
YyTableClass.yyTableInit(); // initial yyCheck eingefuegt PL 05-03-08
if (yyMax <= 0) yyMax = 256; // initial size
int yyState = 0, yyStates[] = new int[yyMax]; // state stack
Object yyVal = null, yyVals[] = new Object[yyMax]; // value stack
/*modified by diho, 14.04.2004
orig: int yyToken = -1 was replaced by "empty Token"*/
yyTokenclass yyToken = new yyTokenclass(); // current input
int yyErrorFlag = 0; // #tks to shift
yyLoop: for (int yyTop = 0;; ++ yyTop) {
if (yyTop >= yyStates.length) { // dynamically increase
int[] i = new int[yyStates.length+yyMax];
System.arraycopy(yyStates, 0, i, 0, yyStates.length);
yyStates = i;
Object[] o = new Object[yyVals.length+yyMax];
System.arraycopy(yyVals, 0, o, 0, yyVals.length);
yyVals = o;
}
yyStates[yyTop] = yyState;
yyVals[yyTop] = yyVal;
//t if (yydebug != null) yydebug.push(yyState, yyVal);
yyDiscarded: for (;;) { // discarding a token does not change stack
int yyN;
if ((yyN = YyDefRedClass.yyDefRed[yyState]) == 0) { // else [default] reduce (yyN)
/* modified by diho, 14.04.2004
if "empty token", get next token */
if (yyToken.tokennr <0) {
/* modified by diho, 10.04.2004
call yyLex.advance in any case, check if yyToken is EOF */
yyToken = yyLex.advance(); /*? yyLex.token() : 0;*/
/* modified by diho, 27.04.2004
if "null", create EOF token */
if (yyToken == null) {yyToken = new EOF();}
//t if (yydebug != null)
//t /* modified by diho, 14.04.2004
//t orig.: yydebug.lex(yyState, yyToken, yyname(yyToken), yyLex.value()); */
//t yydebug.lex(yyState, yyToken.tokennr, yyname(yyToken.tokennr), yyToken.value);
}
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr*/
if ((yyN = YySindexClass.yySindex[yyState]) != 0 && (yyN += yyToken.tokennr) >= 0
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr*/
&& yyN < YyTableClass.yyTable.length && YyCheckClass.yyCheck[yyN] == yyToken.tokennr) {
//t if (yydebug != null)
//t yydebug.shift(yyState, YyTableClass.yyTable[yyN], yyErrorFlag-1);
yyState = YyTableClass.yyTable[yyN]; // shift to yyN
/* modified by diho, 14.04.2004
replaced yyLex.value() by yyToken.value*/
yyVal = yyToken.value;
/* modified by diho, 14.04.2004
orig: yyToken = -1 */
yyToken = new yyTokenclass();
if (yyErrorFlag > 0) -- yyErrorFlag;
continue yyLoop;
}
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr*/
if ((yyN = YyRindexClass.yyRindex[yyState]) != 0 && (yyN += yyToken.tokennr) >= 0
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr*/
&& yyN < YyTableClass.yyTable.length && YyCheckClass.yyCheck[yyN] == yyToken.tokennr)
yyN = YyTableClass.yyTable[yyN]; // reduce (yyN)
else
switch (yyErrorFlag) {
case 0:
yyerror("syntax error", yyExpecting(yyState));
//t if (yydebug != null) yydebug.error("syntax error");
case 1: case 2:
yyErrorFlag = 3;
do {
if ((yyN = YySindexClass.yySindex[yyStates[yyTop]]) != 0
&& (yyN += yyErrorCode) >= 0 && yyN < YyTableClass.yyTable.length
&& YyCheckClass.yyCheck[yyN] == yyErrorCode) {
//t if (yydebug != null)
//t yydebug.shift(yyStates[yyTop], YyTableClass.yyTable[yyN], 3);
yyState = YyTableClass.yyTable[yyN];
/* modified by diho, 14.04.2004
replaced yyLex.value by yyToken.value*/
yyVal = yyToken.value;
continue yyLoop;
}
//t if (yydebug != null) yydebug.pop(yyStates[yyTop]);
} while (-- yyTop >= 0);
//t if (yydebug != null) yydebug.reject();
throw new yyException("irrecoverable syntax error");
case 3:
/* modified by diho, 14.04.2004
orig.: if (yyToken == 0)*/
if (yyToken == null) {
//t if (yydebug != null) yydebug.reject();
throw new yyException("irrecoverable syntax error at end-of-file");
}
//t if (yydebug != null)
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr, yyLex.value by yyToken.value*/
//t yydebug.discard(yyState, yyToken.tokennr, yyname(yyToken.tokennr),
//t yyToken.value);
/* modified by diho, 14.04.2004
orig: yyToken = -1*/
yyToken = new yyTokenclass();
continue yyDiscarded; // leave stack alone
}
}
int yyV = yyTop + 1-YyLenClass.yyLen[yyN];
//t if (yydebug != null)
//t yydebug.reduce(yyState, yyStates[yyV-1], yyN, YyRuleClass.yyRule[yyN], YyLenClass.yyLen[yyN]);
yyVal = yyDefault(yyV > yyTop ? null : yyVals[yyV]);
switch (yyN) {
case 1:
// line 15 "TschenrechnerParser.jay"
{}
break;
case 2:
// line 16 "TschenrechnerParser.jay"
{}
break;
case 3:
// line 17 "TschenrechnerParser.jay"
{}
break;
case 4:
// line 19 "TschenrechnerParser.jay"
{}
break;
case 5:
// line 20 "TschenrechnerParser.jay"
{}
break;
case 6:
// line 21 "TschenrechnerParser.jay"
{}
break;
case 7:
// line 22 "TschenrechnerParser.jay"
{}
break;
// line 295 "-"
}
yyTop -= YyLenClass.yyLen[yyN];
yyState = yyStates[yyTop];
int yyM = YyLhsClass.yyLhs[yyN];
if (yyState == 0 && yyM == 0) {
//t if (yydebug != null) yydebug.shift(0, yyFinal);
yyState = yyFinal;
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr*/
if (yyToken.tokennr < 0) {
/** modified by diho, 10.04.2004
*/
yyToken = yyLex.advance(); /* ? yyLex.token() : 0;*/
/* modified by diho, 14.04.2004
if "empty token", get next token */
if (yyToken == null) {yyToken = new EOF();}
//t if (yydebug != null)
/* modified by diho, 14.04.2004
replaced yyToken by yyToken.tokennr, yyLex.value() by yyToken.value*/
//t yydebug.lex(yyState, yyToken.tokennr,yyname(yyToken.tokennr), yyToken.value);
}
/* modified by diho, 14.04.2004
orig.: if (yyToken == 0) */
if (yyToken.tokennr == 0) {
//t if (yydebug != null) yydebug.accept(yyVal);
return yyVal;
}
continue yyLoop;
}
if ((yyN = YyGindexClass.yyGindex[yyM]) != 0 && (yyN += yyState) >= 0
&& yyN < YyTableClass.yyTable.length && YyCheckClass.yyCheck[yyN] == yyState)
yyState = YyTableClass.yyTable[yyN];
else
yyState = YyDgotoClass.yyDgoto[yyM];
//t if (yydebug != null) yydebug.shift(yyStates[yyTop], yyState);
continue yyLoop;
}
}
}
protected static final class YyLhsClass {
public static final short yyLhs [] = { -1,
0, 0, 0, 1, 1, 1, 1,
};
} /* End of class YyLhsClass */
protected static final class YyLenClass {
public static final short yyLen [] = { 2,
3, 3, 1, 1, 1, 1, 1,
};
} /* End class YyLenClass */
protected static final class YyDefRedClass {
public static final short yyDefRed [] = { 0,
0, 3, 0, 0, 4, 5, 6, 7, 0, 1,
0,
};
} /* End of class YyDefRedClass */
protected static final class YyDgotoClass {
public static final short yyDgoto [] = { 3,
9,
};
} /* End of class YyDgotoClass */
protected static final class YySindexClass {
public static final short yySindex [] = { -247,
-247, 0, -248, -255, 0, 0, 0, 0, -247, 0,
-248,
};
} /* End of class YySindexClass */
protected static final class YyRindexClass {
public static final short yyRindex [] = { 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1,
};
} /* End of class YyRindexClass */
protected static final class YyGindexClass {
public static final short yyGindex [] = { -1,
0,
};
} /* End of class YyGindexClass */
protected static class yyTable0 {
protected static final short yyTable0 [] = { 4,
2, 5, 6, 7, 8, 0, 10, 11, 5, 6,
7, 8, 0, 1, 0, 2, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 2,
};
}
protected static final class YyTableClass {
static short[] yyTable = new short[264];
protected static void yyTableInit () {
int numyycheck;
int yyTableerun = 0;
for (numyycheck = 0; numyycheck <= 1000; numyycheck++) {
if (yyTableerun < 264) {
yyTable[yyTableerun] = yyTable0.yyTable0[numyycheck];
yyTableerun++;
}
}
}
} /* End of class YyTableClass */
protected static class yyCheck0 {
protected static final short yyCheck0 [] = { 1,
0, 257, 258, 259, 260, -1, 262, 9, 257, 258,
259, 260, -1, 261, -1, 263, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, 262,
};
}
protected static final class YyCheckClass {
static short[] yyCheck = new short[264];
protected static void yyCheckInit () {
int numyycheck;
int yyCheckerun = 0;
for (numyycheck = 0; numyycheck <= 1000; numyycheck++) {
if (yyCheckerun < 264) {
yyCheck[yyCheckerun] = yyCheck0.yyCheck0[numyycheck];
yyCheckerun++;
}
}
};
} /* End of class YyCheckClass */
//t protected static final class YyRuleClass {
//t public static final String yyRule [] = {
//t "$accept : S",
//t "S : KLAMMERAUF S KLAMMERZU",
//t "S : S operationszeichen S",
//t "S : ZAHL",
//t "operationszeichen : PLUS",
//t "operationszeichen : MAL",
//t "operationszeichen : MINUS",
//t "operationszeichen : GETEILT",
//t };
//t } /* End of class YyRuleClass */
protected static final class YyNameClass {
public static final String yyName [] = {
"end-of-file",null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,"PLUS","MAL","MINUS","GETEILT",
"KLAMMERAUF","KLAMMERZU","ZAHL","MALKLAMMERAUF",
};
} /* End of class YyNameClass */
// line 23 "TschenrechnerParser.jay"
}
// line 535 "-"
class yyTokenclass {
public int tokennr;
public Object value;
yyTokenclass () {
this.tokennr=-1;
}
yyTokenclass (Object o) {
this.value = o;
}
}
class EOF extends yyTokenclass {
EOF () {
super();
this.tokennr=0;
}
}
// %token constants
final class PLUS extends yyTokenclass {
PLUS(Object o) {
super(o);
this.tokennr = 257;
}
PLUS() {
super();
this.tokennr = 257;
}
}
final class MAL extends yyTokenclass {
MAL(Object o) {
super(o);
this.tokennr = 258;
}
MAL() {
super();
this.tokennr = 258;
}
}
final class MINUS extends yyTokenclass {
MINUS(Object o) {
super(o);
this.tokennr = 259;
}
MINUS() {
super();
this.tokennr = 259;
}
}
final class GETEILT extends yyTokenclass {
GETEILT(Object o) {
super(o);
this.tokennr = 260;
}
GETEILT() {
super();
this.tokennr = 260;
}
}
final class KLAMMERAUF extends yyTokenclass {
KLAMMERAUF(Object o) {
super(o);
this.tokennr = 261;
}
KLAMMERAUF() {
super();
this.tokennr = 261;
}
}
final class KLAMMERZU extends yyTokenclass {
KLAMMERZU(Object o) {
super(o);
this.tokennr = 262;
}
KLAMMERZU() {
super();
this.tokennr = 262;
}
}
final class ZAHL extends yyTokenclass {
ZAHL(Object o) {
super(o);
this.tokennr = 263;
}
ZAHL() {
super();
this.tokennr = 263;
}
}
final class MALKLAMMERAUF extends yyTokenclass {
MALKLAMMERAUF(Object o) {
super(o);
this.tokennr = 264;
}
MALKLAMMERAUF() {
super();
this.tokennr = 264;
}
}
final class yyError extends yyTokenclass {
yyError () {
super();
this.tokennr = 256;
}
}
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