/*
* The scanner definition for COOL ASTs
*/
import java_cup.runtime.Symbol;
class ASTLexer implements java_cup.runtime.Scanner {
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 int YY_BOL = 128;
private final int YY_EOF = 129;
StringBuffer buf = new StringBuffer();
int line() { return yyline; }
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 yyline;
private boolean yy_at_bol;
private int yy_lexical_state;
ASTLexer (java.io.Reader reader) {
this ();
if (null == reader) {
throw (new Error("Error: Bad input stream initializer."));
}
yy_reader = new java.io.BufferedReader(reader);
}
ASTLexer (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 ASTLexer () {
yy_buffer = new char[YY_BUFFER_SIZE];
yy_buffer_read = 0;
yy_buffer_index = 0;
yy_buffer_start = 0;
yy_buffer_end = 0;
yyline = 0;
yy_at_bol = true;
yy_lexical_state = YYINITIAL;
}
private boolean yy_eof_done = false;
private final int YYINITIAL = 0;
private final int STRING = 1;
private final int yy_state_dtrans[] = {
0,
139
};
private void yybegin (int state) {
yy_lexical_state = state;
}
private int 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 YY_EOF;
}
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 YY_EOF;
}
yy_buffer_read = yy_buffer_read + next_read;
}
return yy_buffer[yy_buffer_index++];
}
private void yy_move_end () {
if (yy_buffer_end > yy_buffer_start &&
'\n' == yy_buffer[yy_buffer_end-1])
yy_buffer_end--;
if (yy_buffer_end > yy_buffer_start &&
'\r' == yy_buffer[yy_buffer_end-1])
yy_buffer_end--;
}
private boolean yy_last_was_cr=false;
private void yy_mark_start () {
int i;
for (i = yy_buffer_start; i < yy_buffer_index; ++i) {
if ('\n' == yy_buffer[i] && !yy_last_was_cr) {
++yyline;
}
if ('\r' == yy_buffer[i]) {
++yyline;
yy_last_was_cr=true;
} else yy_last_was_cr=false;
}
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;
yy_at_bol = (yy_buffer_end > yy_buffer_start) &&
('\r' == yy_buffer[yy_buffer_end-1] ||
'\n' == yy_buffer[yy_buffer_end-1] ||
2028/*LS*/ == yy_buffer[yy_buffer_end-1] ||
2029/*PS*/ == yy_buffer[yy_buffer_end-1]);
}
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) {
res[i][j] = sequenceInteger;
sequenceLength--;
continue;
}
commaIndex = st.indexOf(',');
workString = (commaIndex==-1) ? st :
st.substring(0, commaIndex);
st = st.substring(commaIndex+1);
colonIndex = workString.indexOf(':');
if (colonIndex == -1) {
res[i][j]=Integer.parseInt(workString);
continue;
}
lengthString =
workString.substring(colonIndex+1);
sequenceLength=Integer.parseInt(lengthString);
workString=workString.substring(0,colonIndex);
sequenceInteger=Integer.parseInt(workString);
res[i][j] = sequenceInteger;
sequenceLength--;
}
}
return res;
}
private int yy_acpt[] = {
/* 0 */ YY_NOT_ACCEPT,
/* 1 */ YY_NO_ANCHOR,
/* 2 */ YY_NO_ANCHOR,
/* 3 */ YY_NO_ANCHOR,
/* 4 */ YY_NO_ANCHOR,
/* 5 */ YY_NO_ANCHOR,
/* 6 */ YY_NO_ANCHOR,
/* 7 */ YY_NO_ANCHOR,
/* 8 */ YY_NO_ANCHOR,
/* 9 */ YY_NO_ANCHOR,
/* 10 */ YY_NO_ANCHOR,
/* 11 */ YY_NO_ANCHOR,
/* 12 */ YY_NO_ANCHOR,
/* 13 */ YY_NO_ANCHOR,
/* 14 */ YY_NO_ANCHOR,
/* 15 */ YY_NO_ANCHOR,
/* 16 */ YY_NO_ANCHOR,
/* 17 */ YY_NO_ANCHOR,
/* 18 */ YY_NO_ANCHOR,
/* 19 */ YY_NO_ANCHOR,
/* 20 */ YY_NO_ANCHOR,
/* 21 */ YY_NO_ANCHOR,
/* 22 */ YY_NO_ANCHOR,
/* 23 */ YY_NO_ANCHOR,
/* 24 */ YY_NO_ANCHOR,
/* 25 */ YY_NO_ANCHOR,
/* 26 */ YY_NO_ANCHOR,
/* 27 */ YY_NO_ANCHOR,
/* 28 */ YY_NO_ANCHOR,
/* 29 */ YY_NO_ANCHOR,
/* 30 */ YY_NO_ANCHOR,
/* 31 */ YY_NO_ANCHOR,
/* 32 */ YY_NO_ANCHOR,
/* 33 */ YY_NO_ANCHOR,
/* 34 */ YY_NO_ANCHOR,
/* 35 */ YY_NO_ANCHOR,
/* 36 */ YY_NO_ANCHOR,
/* 37 */ YY_NO_ANCHOR,
/* 38 */ YY_NO_ANCHOR,
/* 39 */ YY_NO_ANCHOR,
/* 40 */ YY_NO_ANCHOR,
/* 41 */ YY_NO_ANCHOR,
/* 42 */ YY_NO_ANCHOR,
/* 43 */ YY_NO_ANCHOR,
/* 44 */ YY_NO_ANCHOR,
/* 45 */ YY_NO_ANCHOR,
/* 46 */ YY_NO_ANCHOR,
/* 47 */ YY_NO_ANCHOR,
/* 48 */ YY_NO_ANCHOR,
/* 49 */ YY_NOT_ACCEPT,
/* 50 */ YY_NO_ANCHOR,
/* 51 */ YY_NO_ANCHOR,
/* 52 */ YY_NOT_ACCEPT,
/* 53 */ YY_NOT_ACCEPT,
/* 54 */ YY_NOT_ACCEPT,
/* 55 */ YY_NOT_ACCEPT,
/* 56 */ YY_NOT_ACCEPT,
/* 57 */ YY_NOT_ACCEPT,
/* 58 */ YY_NOT_ACCEPT,
/* 59 */ YY_NOT_ACCEPT,
/* 60 */ YY_NOT_ACCEPT,
/* 61 */ YY_NOT_ACCEPT,
/* 62 */ YY_NOT_ACCEPT,
/* 63 */ YY_NOT_ACCEPT,
/* 64 */ YY_NOT_ACCEPT,
/* 65 */ YY_NOT_ACCEPT,
/* 66 */ YY_NOT_ACCEPT,
/* 67 */ YY_NOT_ACCEPT,
/* 68 */ YY_NOT_ACCEPT,
/* 69 */ YY_NOT_ACCEPT,
/* 70 */ YY_NOT_ACCEPT,
/* 71 */ YY_NOT_ACCEPT,
/* 72 */ YY_NOT_ACCEPT,
/* 73 */ YY_NOT_ACCEPT,
/* 74 */ YY_NOT_ACCEPT,
/* 75 */ YY_NOT_ACCEPT,
/* 76 */ YY_NOT_ACCEPT,
/* 77 */ YY_NOT_ACCEPT,
/* 78 */ YY_NOT_ACCEPT,
/* 79 */ YY_NOT_ACCEPT,
/* 80 */ YY_NOT_ACCEPT,
/* 81 */ YY_NOT_ACCEPT,
/* 82 */ YY_NOT_ACCEPT,
/* 83 */ YY_NOT_ACCEPT,
/* 84 */ YY_NOT_ACCEPT,
/* 85 */ YY_NOT_ACCEPT,
/* 86 */ YY_NOT_ACCEPT,
/* 87 */ YY_NOT_ACCEPT,
/* 88 */ YY_NOT_ACCEPT,
/* 89 */ YY_NOT_ACCEPT,
/* 90 */ YY_NOT_ACCEPT,
/* 91 */ YY_NOT_ACCEPT,
/* 92 */ YY_NOT_ACCEPT,
/* 93 */ YY_NOT_ACCEPT,
/* 94 */ YY_NOT_ACCEPT,
/* 95 */ YY_NOT_ACCEPT,
/* 96 */ YY_NOT_ACCEPT,
/* 97 */ YY_NOT_ACCEPT,
/* 98 */ YY_NOT_ACCEPT,
/* 99 */ YY_NOT_ACCEPT,
/* 100 */ YY_NOT_ACCEPT,
/* 101 */ YY_NOT_ACCEPT,
/* 102 */ YY_NOT_ACCEPT,
/* 103 */ YY_NOT_ACCEPT,
/* 104 */ YY_NOT_ACCEPT,
/* 105 */ YY_NOT_ACCEPT,
/* 106 */ YY_NOT_ACCEPT,
/* 107 */ YY_NOT_ACCEPT,
/* 108 */ YY_NOT_ACCEPT,
/* 109 */ YY_NOT_ACCEPT,
/* 110 */ YY_NOT_ACCEPT,
/* 111 */ YY_NOT_ACCEPT,
/* 112 */ YY_NOT_ACCEPT,
/* 113 */ YY_NOT_ACCEPT,
/* 114 */ YY_NOT_ACCEPT,
/* 115 */ YY_NOT_ACCEPT,
/* 116 */ YY_NOT_ACCEPT,
/* 117 */ YY_NOT_ACCEPT,
/* 118 */ YY_NOT_ACCEPT,
/* 119 */ YY_NOT_ACCEPT,
/* 120 */ YY_NOT_ACCEPT,
/* 121 */ YY_NOT_ACCEPT,
/* 122 */ YY_NOT_ACCEPT,
/* 123 */ YY_NOT_ACCEPT,
/* 124 */ YY_NOT_ACCEPT,
/* 125 */ YY_NOT_ACCEPT,
/* 126 */ YY_NOT_ACCEPT,
/* 127 */ YY_NOT_ACCEPT,
/* 128 */ YY_NOT_ACCEPT,
/* 129 */ YY_NOT_ACCEPT,
/* 130 */ YY_NOT_ACCEPT,
/* 131 */ YY_NOT_ACCEPT,
/* 132 */ YY_NOT_ACCEPT,
/* 133 */ YY_NOT_ACCEPT,
/* 134 */ YY_NOT_ACCEPT,
/* 135 */ YY_NOT_ACCEPT,
/* 136 */ YY_NOT_ACCEPT,
/* 137 */ YY_NOT_ACCEPT,
/* 138 */ YY_NOT_ACCEPT,
/* 139 */ YY_NOT_ACCEPT,
/* 140 */ YY_NOT_ACCEPT,
/* 141 */ YY_NOT_ACCEPT,
/* 142 */ YY_NOT_ACCEPT,
/* 143 */ YY_NOT_ACCEPT,
/* 144 */ YY_NOT_ACCEPT,
/* 145 */ YY_NOT_ACCEPT,
/* 146 */ YY_NOT_ACCEPT,
/* 147 */ YY_NOT_ACCEPT,
/* 148 */ YY_NOT_ACCEPT,
/* 149 */ YY_NOT_ACCEPT,
/* 150 */ YY_NOT_ACCEPT,
/* 151 */ YY_NOT_ACCEPT,
/* 152 */ YY_NOT_ACCEPT,
/* 153 */ YY_NOT_ACCEPT,
/* 154 */ YY_NOT_ACCEPT,
/* 155 */ YY_NOT_ACCEPT,
/* 156 */ YY_NOT_ACCEPT
};
private int yy_cmap[] = unpackFromString(1,130,
"36:8,37:2,1,36,37,1,36:18,37,36,34,3,36:4,31,32,36:6,2:10,30,36:6,33:26,36," +
"35,36:2,4,36,9,19,11,17,14,18,8,16,21,29,23,12,10,20,7,5,26,6,13,15,24,25,2" +
"7,28,22,33,36:5,0:2")[0];
private int yy_rmap[] = unpackFromString(1,157,
"0,1:2,2,3,1:4,4,1:38,5,4,6,5,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,2" +
"3,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,4" +
"8,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,7" +
"3,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,9" +
"8,99,100,101,102,103,104,105,106,107,108,109,110,111")[0];
private int yy_nxt[][] = unpackFromString(112,38,
"1,2,3,49,52,4:25,5,6,7,4,8,-1:2,2,-1:40,3,-1:37,4,-1,4:26,-1:3,4,-1:6,9,-1:" +
"37,48,-1:37,43:13,44,43:2,45,46,47,43:3,51,43:13,-1:5,53,-1,54,-1,55,56,57," +
"58,59,60,61,-1,62,63,64,65,66,-1:22,140,-1:5,67,-1:44,68,-1:31,69,-1,70,-1:" +
"36,141,-1:9,71,-1:20,72,-1:4,73,-1:32,152,-1:6,74,10,-1:37,75,-1:8,76,-1:39" +
",11,-1:33,77,-1:36,78,-1:23,79,-1:36,142,80,-1:4,143,-1:32,81,-1:6,82,-1:36" +
",83,-1:6,84,-1:41,86,-1:42,87,-1:21,88,-1:39,89,-1:34,12,-1:35,91,-1:9,92,-" +
"1:26,93,-1:43,13,-1:10,14,-1:17,144,-1:2,95,-1:47,15,-1:23,96,-1:45,97,-1:1" +
"1,153,-1:18,98,-1:38,100,-1:34,101,-1:41,16,-1:18,17,-1:35,102,-1:27,18,-1:" +
"30,103,-1:42,19,-1:38,154,-1:44,104,-1:22,20,-1:47,147,-1:26,21,-1:49,22,-1" +
":33,105,-1:29,23,-1:47,106,-1:33,107,-1:31,149,-1:42,155,-1:47,109,-1:29,24" +
",-1:39,111,112,-1:29,148,-1:36,156,-1:39,114,-1:42,25,-1:45,150,-1:25,117,-" +
"1:45,119,-1:31,121,-1:49,26,-1:42,122,-1:31,151,-1:30,27,-1:42,28,-1:34,29," +
"-1:28,30,-1:42,126,-1:39,127,-1:36,31,-1:35,32,-1:41,33,-1:26,128,-1:49,34," +
"-1:30,35,-1:31,130,-1:47,36,-1:34,131,-1:32,37,-1:45,38,-1:40,132,-1:36,39," +
"-1:42,133,-1:29,134,-1:29,135,-1:41,136,-1:43,137,-1:33,138,-1:42,40,-1:21," +
"1,-1,41:32,42,50,41:2,-1:7,85,-1:45,90,-1:31,99,-1:35,145,-1:51,146,-1:27,1" +
"10,-1:46,116,-1:24,115,-1:51,123,-1:25,118,-1:39,125,-1:31,129,-1:39,94,-1:" +
"51,108,-1:27,113,-1:35,120,-1:37,124,-1:28");
public java_cup.runtime.Symbol next_token ()
throws java.io.IOException {
int 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) {
if (yy_initial && yy_at_bol) yy_lookahead = YY_BOL;
else yy_lookahead = yy_advance();
yy_next_state = YY_F;
yy_next_state = yy_nxt[yy_rmap[yy_state]][yy_cmap[yy_lookahead]];
if (YY_EOF == yy_lookahead && true == yy_initial) {
return new Symbol(ASTConstants.EOF);
}
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 (YY_NO_STATE == yy_last_accept_state) {
throw (new Error("Lexical Error: Unmatched Input."));
}
else {
yy_anchor = yy_acpt[yy_last_accept_state];
if (0 != (YY_END & yy_anchor)) {
yy_move_end();
}
yy_to_mark();
switch (yy_last_accept_state) {
case 1:
case -2:
break;
case 2:
{}
case -3:
break;
case 3:
{ return new Symbol(ASTConstants.INT_CONST,
AbstractTable.inttable.addString(yytext())); }
case -4:
break;
case 4:
{ return new Symbol(ASTConstants.ID,
AbstractTable.idtable.addString(yytext())); }
case -5:
break;
case 5:
{ return new Symbol(ASTConstants.COLON); }
case -6:
break;
case 6:
{ return new Symbol(ASTConstants.LPAREN); }
case -7:
break;
case 7:
{ return new Symbol(ASTConstants.RPAREN); }
case -8:
break;
case 8:
{ buf.setLength(0); yybegin(STRING);}
case -9:
break;
case 9:
{ return new Symbol(ASTConstants.LINENO,
new Integer(yytext().substring(1))); }
case -10:
break;
case 10:
{ return new Symbol(ASTConstants.LT); }
case -11:
break;
case 11:
{ return new Symbol(ASTConstants.EQ); }
case -12:
break;
case 12:
{ return new Symbol(ASTConstants.MUL); }
case -13:
break;
case 13:
{ return new Symbol(ASTConstants.LET); }
case -14:
break;
case 14:
{ return new Symbol(ASTConstants.LEQ); }
case -15:
break;
case 15:
{ return new Symbol(ASTConstants.SUB); }
case -16:
break;
case 16:
{ return new Symbol(ASTConstants.NEG); }
case -17:
break;
case 17:
{ return new Symbol(ASTConstants.NEW); }
case -18:
break;
case 18:
{ return new Symbol(ASTConstants.INT); }
case -19:
break;
case 19:
{ return new Symbol(ASTConstants.PLUS); }
case -20:
break;
case 20:
{ return new Symbol(ASTConstants.ATTR); }
case -21:
break;
case 21:
{ return new Symbol(ASTConstants.COMP); }
case -22:
break;
case 22:
{ return new Symbol(ASTConstants.COND); }
case -23:
break;
case 23:
{ return new Symbol(ASTConstants.LOOP); }
case -24:
break;
case 24:
{ return new Symbol(ASTConstants.BOOL); }
case -25:
break;
case 25:
{ return new Symbol(ASTConstants.CLASS); }
case -26:
break;
case 26:
{ return new Symbol(ASTConstants.BLOCK); }
case -27:
break;
case 27:
{ return new Symbol(ASTConstants.OBJECT); }
case -28:
break;
case 28:
{ return new Symbol(ASTConstants.ASSIGN); }
case -29:
break;
case 29:
{ return new Symbol(ASTConstants.METHOD); }
case -30:
break;
case 30:
{ return new Symbol(ASTConstants.STR); }
case -31:
break;
case 31:
{ return new Symbol(ASTConstants.DIVIDE); }
case -32:
break;
case 32:
{ return new Symbol(ASTConstants.FORMAL); }
case -33:
break;
case 33:
{ return new Symbol(ASTConstants.BRANCH); }
case -34:
break;
case 34:
{ return new Symbol(ASTConstants.ISVOID); }
case -35:
break;
case 35:
{ return new Symbol(ASTConstants.PROGRAM); }
case -36:
break;
case 36:
{ return new Symbol(ASTConstants.TYPCASE); }
case -37:
break;
case 37:
{ return new Symbol(ASTConstants.NO_EXPR); }
case -38:
break;
case 38:
{ return new Symbol(ASTConstants.NO_TYPE); }
case -39:
break;
case 39:
{ return new Symbol(ASTConstants.DISPATCH); }
case -40:
break;
case 40:
{ return new Symbol(ASTConstants.STATIC_DISPATCH);}
case -41:
break;
case 41:
{ buf.append(yytext()); }
case -42:
break;
case 42:
{ yybegin(YYINITIAL);
return new Symbol(ASTConstants.STR_CONST,
AbstractTable.stringtable.addString(buf.toString())); }
case -43:
break;
case 43:
{ buf.append(yytext().substring(1)); }
case -44:
break;
case 44:
{ buf.append('\t'); }
case -45:
break;
case 45:
{ buf.append('\f'); }
case -46:
break;
case 46:
{ buf.append('\b'); }
case -47:
break;
case 47:
{ buf.append('\n'); }
case -48:
break;
case 48:
{ buf.append((char)Integer.parseInt(yytext().substring(2), 16)); }
case -49:
break;
case 50:
{ buf.append(yytext()); }
case -50:
break;
case 51:
{ buf.append(yytext().substring(1)); }
case -51:
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;
yy_mark_end();
}
}
}
}
}
}