*
* "JLex: A Lexical Analyzer Generator for Java"
*
* http://www.cs.princeton.edu/~appel/modern/java/JLex/
*
* @author
* David W. Croft
* @version
* 1999-04-24
*********************************************************************/
//////////////////////////////////////////////////////////////////////
// Portions of this code machine-generated by JLex.
//////////////////////////////////////////////////////////////////////
public class MiniScanner implements MiniSymbols, CUPTokenScanner {
private final int YY_BUFFER_SIZE = 512;
private final int YY_F = -1;
private final int YY_NO_STATE = -1;
private final int YY_NOT_ACCEPT = 0;
private final int YY_START = 1;
private final int YY_END = 2;
private final int YY_NO_ANCHOR = 4;
private final char YYEOF = '\uFFFF';
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
private static final String [ ] TEST_FILES = {
"../test/Test.mini" };
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
public static void main ( String [ ] args )
throws Exception
//////////////////////////////////////////////////////////////////////
{
for ( int i = 0; i < TEST_FILES.length; i++ )
{
test ( new FileReader ( TEST_FILES [ i ] ) );
}
}
public static void test ( Reader reader )
throws Exception
//////////////////////////////////////////////////////////////////////
{
MiniScanner miniScanner = new MiniScanner ( reader );
Symbol symbol = null;
loop:
while ( ( symbol = miniScanner.nextToken ( ) ).sym != EOF )
{
System.out.println (
"Symbol: " + symbol + " Value: " + symbol.value );
}
}
public static Symbol scanConstant ( String text )
//////////////////////////////////////////////////////////////////////
{
try
{
return new Symbol ( CONSTANT, new Integer ( text ) );
}
catch ( NumberFormatException ex )
{
return null;
}
}
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
private java.io.BufferedReader yy_reader;
private int yy_buffer_index;
private int yy_buffer_read;
private int yy_buffer_start;
private int yy_buffer_end;
private char yy_buffer[];
private int yychar;
private int yyline;
private int yy_lexical_state;
public MiniScanner (java.io.Reader reader) {
this ();
if (null == reader) {
throw (new Error("Error: Bad input stream initializer."));
}
yy_reader = new java.io.BufferedReader(reader);
}
public MiniScanner (java.io.InputStream instream) {
this ();
if (null == instream) {
throw (new Error("Error: Bad input stream initializer."));
}
yy_reader = new java.io.BufferedReader(new java.io.InputStreamReader(instream));
}
private MiniScanner () {
yy_buffer = new char[YY_BUFFER_SIZE];
yy_buffer_read = 0;
yy_buffer_index = 0;
yy_buffer_start = 0;
yy_buffer_end = 0;
yychar = 0;
yyline = 0;
yy_lexical_state = YYINITIAL;
}
private boolean yy_eof_done = false;
private final int YYINITIAL = 0;
private final int yy_state_dtrans[] = {
0
};
private void yybegin (int state) {
yy_lexical_state = state;
}
private char yy_advance ()
throws java.io.IOException {
int next_read;
int i;
int j;
if (yy_buffer_index < yy_buffer_read) {
return yy_buffer[yy_buffer_index++];
}
if (0 != yy_buffer_start) {
i = yy_buffer_start;
j = 0;
while (i < yy_buffer_read) {
yy_buffer[j] = yy_buffer[i];
++i;
++j;
}
yy_buffer_end = yy_buffer_end - yy_buffer_start;
yy_buffer_start = 0;
yy_buffer_read = j;
yy_buffer_index = j;
next_read = yy_reader.read(yy_buffer,
yy_buffer_read,
yy_buffer.length - yy_buffer_read);
if (-1 == next_read) {
return YYEOF;
}
yy_buffer_read = yy_buffer_read + next_read;
}
while (yy_buffer_index >= yy_buffer_read) {
if (yy_buffer_index >= yy_buffer.length) {
yy_buffer = yy_double(yy_buffer);
}
next_read = yy_reader.read(yy_buffer,
yy_buffer_read,
yy_buffer.length - yy_buffer_read);
if (-1 == next_read) {
return YYEOF;
}
yy_buffer_read = yy_buffer_read + next_read;
}
return yy_buffer[yy_buffer_index++];
}
private void yy_move_start () {
if ((byte) '\n' == yy_buffer[yy_buffer_start]) {
++yyline;
}
++yychar;
++yy_buffer_start;
}
private void yy_pushback () {
--yy_buffer_end;
}
private void yy_mark_start () {
int i;
for (i = yy_buffer_start; i < yy_buffer_index; ++i) {
if ((byte) '\n' == yy_buffer[i]) {
++yyline;
}
}
yychar = yychar
+ yy_buffer_index - yy_buffer_start;
yy_buffer_start = yy_buffer_index;
}
private void yy_mark_end () {
yy_buffer_end = yy_buffer_index;
}
private void yy_to_mark () {
yy_buffer_index = yy_buffer_end;
}
private java.lang.String yytext () {
return (new java.lang.String(yy_buffer,
yy_buffer_start,
yy_buffer_end - yy_buffer_start));
}
private int yylength () {
return yy_buffer_end - yy_buffer_start;
}
private char[] yy_double (char buf[]) {
int i;
char newbuf[];
newbuf = new char[2*buf.length];
for (i = 0; i < buf.length; ++i) {
newbuf[i] = buf[i];
}
return newbuf;
}
private final int YY_E_INTERNAL = 0;
private final int YY_E_MATCH = 1;
private java.lang.String yy_error_string[] = {
"Error: Internal error.\n",
"Error: Unmatched input.\n"
};
private void yy_error (int code,boolean fatal) {
java.lang.System.out.print(yy_error_string[code]);
java.lang.System.out.flush();
if (fatal) {
throw new Error("Fatal Error.\n");
}
}
private int [][] unpackFromString(int size1, int size2, String st)
{
int colonIndex = -1;
String lengthString;
int sequenceLength = 0;
int sequenceInteger = 0;
int commaIndex;
String workString;
int res[][] = new int[size1][size2];
for (int i= 0; i < size1; i++)
for (int j= 0; j < size2; j++)
{
if (sequenceLength == 0)
{
commaIndex = st.indexOf(',');
if (commaIndex == -1)
workString = st;
else
workString = st.substring(0, commaIndex);
st = st.substring(commaIndex+1);
colonIndex = workString.indexOf(':');
if (colonIndex == -1)
{
res[i][j] = Integer.parseInt(workString);
}
else
{
lengthString = workString.substring(colonIndex+1);
sequenceLength = Integer.parseInt(lengthString);
workString = workString.substring(0,colonIndex);
sequenceInteger = Integer.parseInt(workString);
res[i][j] = sequenceInteger;
sequenceLength--;
}
}
else
{
res[i][j] = sequenceInteger;
sequenceLength--;
}
}
return res;
}
private int yy_acpt[] = {
YY_NOT_ACCEPT,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR,
YY_NO_ANCHOR
};
private int yy_cmap[] = {
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, 1, 0, 0,
2, 3, 4, 5, 6, 7, 0, 8,
9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 10, 11, 12, 13, 14, 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, 15, 0,
0, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 25, 26, 25, 27, 28,
29, 25, 30, 31, 32, 33, 25, 34,
25, 25, 25, 0, 0, 0, 0, 0
};
private int yy_rmap[] = {
0, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 1, 3, 1, 4, 1,
5, 1, 1, 1, 1, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18,
19, 20, 21, 22, 23, 24, 25, 26,
27, 28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46
};
private int yy_nxt[][] = unpackFromString(47,35,
"1,2,3,4,5,6,7,8,9,10,35,11,12,13,14,15,16,67,60,36,50,37,16:2,38,16:4,75,61,16,39,16,68,-1:44,10,-1:38,18,19,-1:33,20,-1:30,16,-1:6,16:19,-1:13,17,-1:30,16,-1:6,16:12,21,16:6,-1:9,16,-1:6,16:8,22,16:10,-1:9,16,-1:6,16:5,23,16:5,71,16:7,-1:9,16,-1:6,16:7,54,16:4,24,16:6,-1:9,16,-1:6,16:3,25,16:15,-1:9,16,-1:6,16:10,26,16:8,-1:9,16,-1:6,16:4,27,16:14,-1:9,16,-1:6,16:3,28,16:15,-1:9,16,-1:6,16:11,29,16:7,-1:9,16,-1:6,16:11,30,16:7,-1:9,16,-1:6,16:4,31,16:14,-1:9,16,-1:6,16:4,32,16:14,-1:9,16,-1:6,16:14,33,16:4,-1:9,16,-1:6,16:4,34,16:14,-1:9,16,-1:6,16:10,52,40,16:7,-1:9,16,-1:6,16:10,41,16:8,-1:9,16,-1:6,16:15,42,16:3,-1:9,16,-1:6,43,16:18,-1:9,16,-1:6,16:4,44,16:14,-1:9,16,-1:6,16:8,45,16:10,-1:9,16,-1:6,16:10,46,16:8,-1:9,16,-1:6,16:16,47,16:2,-1:9,16,-1:6,16:4,48,16:14,-1:9,16,-1:6,16:14,49,16:4,-1:9,16,-1:6,51,16:18,-1:9,16,-1:6,16:4,53,16:14,-1:9,16,-1:6,16:6,55,16:12,-1:9,16,-1:6,16:8,56,16:10,-1:9,16,-1:6,16:8,57,16:10,-1:9,16,-1:6,16:6,58,16:12,-1:9,16,-1:6,16:17,59,16,-1:9,16,-1:6,16:4,62,16:14,-1:9,16,-1:6,16:7,63,16:6,64,16:4,-1:9,16,-1:6,16:4,65,16:14,-1:9,16,-1:6,16:3,66,16:15,-1:9,16,-1:6,16:16,69,16:2,-1:9,16,-1:6,16:4,70,16:14,-1:9,16,-1:6,16:2,72,16:16,-1:9,16,-1:6,16:12,73,16:6,-1:9,16,-1:6,16:14,74,16:4");
public Symbol nextToken ()
throws java.io.IOException {
char yy_lookahead;
int yy_anchor = YY_NO_ANCHOR;
int yy_state = yy_state_dtrans[yy_lexical_state];
int yy_next_state = YY_NO_STATE;
int yy_last_accept_state = YY_NO_STATE;
boolean yy_initial = true;
int yy_this_accept;
yy_mark_start();
yy_this_accept = yy_acpt[yy_state];
if (YY_NOT_ACCEPT != yy_this_accept) {
yy_last_accept_state = yy_state;
yy_mark_end();
}
while (true) {
yy_lookahead = yy_advance();
yy_next_state = YY_F;
if (YYEOF != yy_lookahead) {
yy_next_state = yy_nxt[yy_rmap[yy_state]][yy_cmap[yy_lookahead]];
}
if (YY_F != yy_next_state) {
yy_state = yy_next_state;
yy_initial = false;
yy_this_accept = yy_acpt[yy_state];
if (YY_NOT_ACCEPT != yy_this_accept) {
yy_last_accept_state = yy_state;
yy_mark_end();
}
}
else {
if (YYEOF == yy_lookahead && true == yy_initial) {
return new Symbol ( EOF );
}
else if (YY_NO_STATE == yy_last_accept_state) {
throw (new Error("Lexical Error: Unmatched Input."));
}
else {
yy_to_mark();
yy_anchor = yy_acpt[yy_last_accept_state];
if (0 != (YY_END & yy_anchor)) {
yy_pushback();
}
if (0 != (YY_START & yy_anchor)) {
yy_move_start();
}
switch (yy_last_accept_state) {
case 1:
{ yybegin ( YYINITIAL ); }
case -2:
break;
case 2:
{ return new Symbol ( MOD ); }
case -3:
break;
case 3:
{ return new Symbol ( LPAREN ); }
case -4:
break;
case 4:
{ return new Symbol ( RPAREN ); }
case -5:
break;
case 5:
{ return new Symbol ( TIMES ); }
case -6:
break;
case 6:
{ return new Symbol ( PLUS ); }
case -7:
break;
case 7:
{ return new Symbol ( COMMA ); }
case -8:
break;
case 8:
{ return new Symbol ( MINUS ); }
case -9:
break;
case 9:
{ return new Symbol ( DIVIDE ); }
case -10:
break;
case 10:
{ return scanConstant ( yytext ( ) ); }
case -11:
break;
case 11:
{ return new Symbol ( SEMICOLON ); }
case -12:
break;
case 12:
{ return new Symbol ( LT ); }
case -13:
break;
case 13:
{ return new Symbol ( EQ ); }
case -14:
break;
case 14:
{ return new Symbol ( GT ); }
case -15:
break;
case 15:
{ return new Symbol ( EXP ); }
case -16:
break;
case 16:
{ return new Symbol ( NAME, yytext ( ) ); }
case -17:
break;
case 17:
{ return new Symbol ( ASSIGN ); }
case -18:
break;
case 18:
{ return new Symbol ( LE ); }
case -19:
break;
case 19:
{ return new Symbol ( NE ); }
case -20:
break;
case 20:
{ return new Symbol ( GE ); }
case -21:
break;
case 21:
{ return new Symbol ( DO ); }
case -22:
break;
case 22:
{ return new Symbol ( FI ); }
case -23:
break;
case 23:
{ return new Symbol ( IF ); }
case -24:
break;
case 24:
{ return new Symbol ( TO ); }
case -25:
break;
case 25:
{ return new Symbol ( END ); }
case -26:
break;
case 26:
{ return new Symbol ( CALL ); }
case -27:
break;
case 27:
{ return new Symbol ( ELSE ); }
case -28:
break;
case 28:
{ return new Symbol ( READ ); }
case -29:
break;
case 29:
{ return new Symbol ( THEN ); }
case -30:
break;
case 30:
{ return new Symbol ( BEGIN ); }
case -31:
break;
case 31:
{ return new Symbol ( WHILE ); }
case -32:
break;
case 32:
{ return new Symbol ( WRITE ); }
case -33:
break;
case 33:
{ return new Symbol ( INTEGER ); }
case -34:
break;
case 34:
{ return new Symbol ( PROCEDURE ); }
case -35:
break;
case 35:
{ yybegin ( YYINITIAL ); }
case -36:
break;
case 36:
{ return new Symbol ( NAME, yytext ( ) ); }
case -37:
break;
case 37:
{ return new Symbol ( NAME, yytext ( ) ); }
case -38:
break;
case 38:
{ return new Symbol ( NAME, yytext ( ) ); }
case -39:
break;
case 39:
{ return new Symbol ( NAME, yytext ( ) ); }
case -40:
break;
case 40:
{ return new Symbol ( NAME, yytext ( ) ); }
case -41:
break;
case 41:
{ return new Symbol ( NAME, yytext ( ) ); }
case -42:
break;
case 42:
{ return new Symbol ( NAME, yytext ( ) ); }
case -43:
break;
case 43:
{ return new Symbol ( NAME, yytext ( ) ); }
case -44:
break;
case 44:
{ return new Symbol ( NAME, yytext ( ) ); }
case -45:
break;
case 45:
{ return new Symbol ( NAME, yytext ( ) ); }
case -46:
break;
case 46:
{ return new Symbol ( NAME, yytext ( ) ); }
case -47:
break;
case 47:
{ return new Symbol ( NAME, yytext ( ) ); }
case -48:
break;
case 48:
{ return new Symbol ( NAME, yytext ( ) ); }
case -49:
break;
case 49:
{ return new Symbol ( NAME, yytext ( ) ); }
case -50:
break;
case 50:
{ return new Symbol ( NAME, yytext ( ) ); }
case -51:
break;
case 51:
{ return new Symbol ( NAME, yytext ( ) ); }
case -52:
break;
case 52:
{ return new Symbol ( NAME, yytext ( ) ); }
case -53:
break;
case 53:
{ return new Symbol ( NAME, yytext ( ) ); }
case -54:
break;
case 54:
{ return new Symbol ( NAME, yytext ( ) ); }
case -55:
break;
case 55:
{ return new Symbol ( NAME, yytext ( ) ); }
case -56:
break;
case 56:
{ return new Symbol ( NAME, yytext ( ) ); }
case -57:
break;
case 57:
{ return new Symbol ( NAME, yytext ( ) ); }
case -58:
break;
case 58:
{ return new Symbol ( NAME, yytext ( ) ); }
case -59:
break;
case 59:
{ return new Symbol ( NAME, yytext ( ) ); }
case -60:
break;
case 60:
{ return new Symbol ( NAME, yytext ( ) ); }
case -61:
break;
case 61:
{ return new Symbol ( NAME, yytext ( ) ); }
case -62:
break;
case 62:
{ return new Symbol ( NAME, yytext ( ) ); }
case -63:
break;
case 63:
{ return new Symbol ( NAME, yytext ( ) ); }
case -64:
break;
case 64:
{ return new Symbol ( NAME, yytext ( ) ); }
case -65:
break;
case 65:
{ return new Symbol ( NAME, yytext ( ) ); }
case -66:
break;
case 66:
{ return new Symbol ( NAME, yytext ( ) ); }
case -67:
break;
case 67:
{ return new Symbol ( NAME, yytext ( ) ); }
case -68:
break;
case 68:
{ return new Symbol ( NAME, yytext ( ) ); }
case -69:
break;
case 69:
{ return new Symbol ( NAME, yytext ( ) ); }
case -70:
break;
case 70:
{ return new Symbol ( NAME, yytext ( ) ); }
case -71:
break;
case 71:
{ return new Symbol ( NAME, yytext ( ) ); }
case -72:
break;
case 72:
{ return new Symbol ( NAME, yytext ( ) ); }
case -73:
break;
case 73:
{ return new Symbol ( NAME, yytext ( ) ); }
case -74:
break;
case 74:
{ return new Symbol ( NAME, yytext ( ) ); }
case -75:
break;
case 75:
{ return new Symbol ( NAME, yytext ( ) ); }
case -76:
break;
default:
yy_error(YY_E_INTERNAL,false);
case -1:
}
yy_initial = true;
yy_state = yy_state_dtrans[yy_lexical_state];
yy_next_state = YY_NO_STATE;
yy_last_accept_state = YY_NO_STATE;
yy_mark_start();
yy_this_accept = yy_acpt[yy_state];
if (YY_NOT_ACCEPT != yy_this_accept) {
yy_last_accept_state = yy_state;
}
}
}
}
}
}