/**
* 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 java_cup.runtime.Symbol next_token() 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;
while (true) {
zzMarkedPosL = zzMarkedPos;
zzAction = -1;
zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
zzState = ZZ_LEXSTATE[zzLexicalState];
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;
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 = zzBufferL[zzCurrentPosL++];
}
}
int zzNext = zzTransL[zzRowMapL[zzState] + zzCMapL[zzInput]];
if (zzNext == -1) break zzForAction;
zzState = zzNext;
int zzAttributes = zzAttrL[zzState];
if ((zzAttributes & 1) == 1) {
zzAction = zzState;
zzMarkedPosL = zzCurrentPosL;
if ((zzAttributes & 8) == 8) break zzForAction;
}
}
}
// store back cached position
zzMarkedPos = zzMarkedPosL;
switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
case 9:
{
return new Symbol(sym.RESTA);
}
case 11:
break;
case 6:
{
return new Symbol(sym.SUMA);
}
case 12:
break;
case 8:
{
return new Symbol(sym.IGUAL);
}
case 13:
break;
case 7:
{
return new Symbol(sym.MULTI);
}
case 14:
break;
case 5:
{
return new Symbol(sym.POTENCIA);
}
case 15:
break;
case 2:
{
return new Symbol(sym.DIVI);
}
case 16:
break;
case 1:
{
/*ignoro blancos*/
}
case 17:
break;
case 10:
{
return new Symbol(sym.NUMERO, new Integer(yytext()));
}
case 18:
break;
case 3:
{
return new Symbol(sym.PARENTIZQ);
}
case 19:
break;
case 4:
{
return new Symbol(sym.PARENTDER);
}
case 20:
break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
zzDoEOF();
{
return new java_cup.runtime.Symbol(sym.EOF);
}
} else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
/**
* Pushes the specified amount of characters back into the input stream.
*
* <p>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;
}