private char uniEscape() throws java.io.IOException, jasError {
int res = 0;
for (int i = 0; i < 4; i++) {
advance();
if (next_char == -1) return 0;
int tmp = Character.digit((char) next_char, 16);
if (tmp == -1) throw new jasError("Bad '\\u' escape sequence");
res = (res << 4) | tmp;
}
return (char) res;
}
/**
* 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 totalRead = 0;
while (totalRead < requested) {
int numRead = zzReader.read(zzBuffer, zzEndRead + totalRead, requested - totalRead);
if (numRead == -1) {
break;
}
totalRead += numRead;
}
if (totalRead > 0) {
zzEndRead += totalRead;
if (totalRead == requested) {
/* possibly more input available */
if (Character.isHighSurrogate(zzBuffer[zzEndRead - 1])) {
--zzEndRead;
zzFinalHighSurrogate = 1;
}
}
return false;
}
// totalRead = 0: End of stream
return true;
}
/**
* 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;
boolean zzR = false;
int zzCh;
int zzCharCount;
for (zzCurrentPosL = zzStartRead;
zzCurrentPosL < zzMarkedPosL;
zzCurrentPosL += zzCharCount) {
zzCh = Character.codePointAt(zzBufferL, zzCurrentPosL, zzMarkedPosL);
zzCharCount = Character.charCount(zzCh);
switch (zzCh) {
case '\u000B':
case '\u000C':
case '\u0085':
case '\u2028':
case '\u2029':
yyline++;
yycolumn = 0;
zzR = false;
break;
case '\r':
yyline++;
yycolumn = 0;
zzR = true;
break;
case '\n':
if (zzR) zzR = false;
else {
yyline++;
yycolumn = 0;
}
break;
default:
zzR = false;
yycolumn += zzCharCount;
}
}
if (zzR) {
// peek one character ahead if it is \n (if we have counted one line too much)
boolean zzPeek;
if (zzMarkedPosL < zzEndReadL) zzPeek = zzBufferL[zzMarkedPosL] == '\n';
else if (zzAtEOF) zzPeek = false;
else {
boolean eof = zzRefill();
zzEndReadL = zzEndRead;
zzMarkedPosL = zzMarkedPos;
zzBufferL = zzBuffer;
if (eof) zzPeek = false;
else zzPeek = zzBufferL[zzMarkedPosL] == '\n';
}
if (zzPeek) yyline--;
}
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;
switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
case 1:
{
System.out.println(
"Token No Valido <"
+ yytext()
+ ">linea: "
+ (yyline + 1)
+ " columna: "
+ (yycolumn + 1));
}
case 11:
break;
case 2:
{
return symbol(sym.NUM, new Integer(yytext()));
}
case 12:
break;
case 3:
{
return symbol(sym.MAS);
}
case 13:
break;
case 4:
{
return symbol(sym.MENOS);
}
case 14:
break;
case 5:
{
return symbol(sym.PYC);
}
case 15:
break;
case 6:
{
return symbol(sym.PARIZQ);
}
case 16:
break;
case 7:
{
return symbol(sym.PARDER);
}
case 17:
break;
case 8:
{
return symbol(sym.DIV);
}
case 18:
break;
case 9:
{
return symbol(sym.MUL);
}
case 19:
break;
case 10:
{
}
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);
}
}
}
}