# include "stdio.h" # define U(x) ((x)&0377) # define NLSTATE yyprevious=YYNEWLINE # define BEGIN yybgin = yysvec + 1 + # define INITIAL 0 # define YYLERR yysvec # define YYSTATE (yyestate-yysvec-1) # define YYOPTIM 1 # define YYLMAX 200 # define output(c) putc(c,yyout) # define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar) # define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;} # define yymore() (yymorfg=1) # define ECHO fprintf(yyout, "%s",yytext) # define REJECT { nstr = yyreject(); goto yyfussy;} int yyleng; extern unsigned char yytext[]; int yymorfg; extern unsigned char *yysptr, yysbuf[]; int yytchar; FILE *yyin = {stdin}, *yyout = {stdout}; extern int yylineno; struct yysvf { struct yywork *yystoff; struct yysvf *yyother; int *yystops;}; struct yysvf *yyestate; extern struct yysvf yysvec[], *yybgin; /* Copyright (c) 1997 Andrew W. Appel. Licensed software: see LICENSE file */ #include #include "util.h" #include "symbol.h" #include "absyn.h" #include "y.tab.h" #include "errormsg.h" static int comLevel=0; #define STRINGMAX 1024 char stringbuild[STRINGMAX+1]; int stringindex=0; static void append(char c) { if (stringindex= 0) yyfussy: switch(nstr){ case 0: if(yywrap()) return(0); break; case 1: {adjust(); continue;} break; case 2: {adjust(); EM_newline(); continue;} break; case 3: {adjust(); return COMMA;} break; case 4: {adjust(); return LBRACE;} break; case 5: {adjust(); return RBRACE;} break; case 6: {adjust(); return LBRACK;} break; case 7: {adjust(); return RBRACK;} break; case 8: {adjust(); return COLON;} break; case 9: {adjust(); return SEMICOLON;} break; case 10: {adjust(); return LPAREN;} break; case 11: {adjust(); return RPAREN;} break; case 12: {adjust(); return DOT;} break; case 13: {adjust(); return PLUS;} break; case 14: {adjust(); return MINUS;} break; case 15: {adjust(); return TIMES;} break; case 16: {adjust(); return DIVIDE;} break; case 17: {adjust(); return AND;} break; case 18: {adjust(); return OR;} break; case 19: {adjust(); return ASSIGN;} break; case 20: {adjust(); return EQ;} break; case 21: {adjust(); return NEQ;} break; case 22: {adjust(); return GT;} break; case 23: {adjust(); return LT;} break; case 24: {adjust(); return GE;} break; case 25: {adjust(); return LE;} break; case 26: {adjust(); return FOR;} break; case 27: {adjust(); return WHILE;} break; case 28: {adjust(); return BREAK;} break; case 29: {adjust(); return LET;} break; case 30: {adjust(); return IN;} break; case 31: {adjust(); return NIL;} break; case 32: {adjust(); return TO;} break; case 33: {adjust(); return END;} break; case 34: {adjust(); return FUNCTION;} break; case 35: {adjust(); return VAR;} break; case 36: {adjust(); return TYPE;} break; case 37: {adjust(); return ARRAY;} break; case 38: {adjust(); return IF;} break; case 39: {adjust(); return THEN;} break; case 40: {adjust(); return ELSE;} break; case 41: {adjust(); return DO;} break; case 42: {adjust(); return OF;} break; case 43: {adjust(); yylval.sval = String((char*)yytext); return ID;} break; case 44: {adjust(); yylval.ival=atoi(yytext); return INT;} break; case 45: {adjust(); BEGIN S; continue;} break; case 46: {adjust(); BEGIN A; comLevel = 1; continue;} break; case 47: {adjust(); EM_error(EM_tokPos,"unmatched close comment"); continue;} break; case 48: {adjust(); EM_error(EM_tokPos,"non-Ascii character"); continue;} break; case 49: {adjust(); EM_error(EM_tokPos,"illegal token"); continue;} break; case 50: {adjust(); comLevel++; continue;} break; case 51: {adjust(); EM_newline(); continue;} break; case 52: {adjust(); comLevel--; if (comLevel==0) {BEGIN INITIAL;} continue;} break; case 53: {adjust(); continue;} break; case 54: {adjust(); BEGIN INITIAL; yylval.sval=getstring(); return STRING;} break; case 55: {adjust(); EM_error (EM_tokPos,"unclosed string"); EM_newline(); BEGIN INITIAL; yylval.sval=getstring(); return STRING;} break; case 56: {adjust(); EM_newline(); BEGIN F; continue;} break; case 57: {adjust(); BEGIN F; continue;} break; case 58: {adjust(); append(*yytext); continue;} break; case 59: {adjust(); EM_newline(); continue;} break; case 60: {adjust(); continue;} break; case 61: {adjust(); BEGIN S; continue;} break; case 62: {adjust(); EM_error(EM_tokPos, "unclosed string"); BEGIN INITIAL; yylval.sval=getstring(); return STRING;} break; case 63: {adjust(); append('\t'); continue;} break; case 64: {adjust(); append('\n'); continue;} break; case 65: {adjust(); append('\\'); continue;} break; case 66: {adjust(); append(yytext[1]); continue;} break; case 67: {adjust(); append(yytext[2]-'@'); continue;} break; case 68: {int x = yytext[1]*100 + yytext[2]*10 + yytext[3] - ('0' * 111); adjust(); if (x>255) EM_error(EM_tokPos, "illegal ascii escape"); else append(x); continue; } break; case 69: {adjust(); EM_error(EM_tokPos, "illegal string escape"); continue;} break; case -1: break; default: fprintf(yyout,"bad switch yylook %d",nstr); } return(0); } /* end of yylex */ int yyvstop[] = { 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 1, 60, 0, 49, 0, 1, 49, 0, 2, 0, 45, 49, 0, 17, 49, 0, 10, 49, 0, 11, 49, 0, 15, 49, 0, 13, 49, 0, 3, 49, 0, 14, 49, 0, 12, 49, 0, 16, 49, 0, 44, 49, 0, 8, 49, 0, 9, 49, 0, 23, 49, 0, 20, 49, 0, 22, 49, 0, 43, 49, 0, 6, 49, 0, 7, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 48, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 43, 49, 0, 4, 49, 0, 18, 49, 0, 5, 49, 0, 53, 0, 51, 0, 53, 0, 53, 0, 58, 0, 55, 0, 54, 58, 0, 58, 69, 0, 62, 0, 60, 62, 0, 59, 0, 61, 62, 0, 1, 0, 47, 0, 46, 0, 44, 0, 19, 0, 25, 0, 21, 0, 24, 0, 43, 0, 43, 0, 43, 0, 41, 43, 0, 43, 0, 43, 0, 43, 0, 43, 0, 38, 43, 0, 30, 43, 0, 43, 0, 43, 0, 42, 43, 0, 43, 0, 32, 43, 0, 43, 0, 43, 0, 43, 0, 52, 0, 50, 0, 57, 0, 56, 0, 66, 0, 65, 0, 64, 0, 63, 0, 60, 0, 43, 0, 43, 0, 43, 0, 33, 43, 0, 26, 43, 0, 43, 0, 29, 43, 0, 31, 43, 0, 43, 0, 43, 0, 35, 43, 0, 43, 0, 67, 0, 43, 0, 43, 0, 40, 43, 0, 43, 0, 39, 43, 0, 36, 43, 0, 43, 0, 37, 43, 0, 28, 43, 0, 43, 0, 27, 43, 0, 43, 0, 68, 0, 43, 0, 34, 43, 0, 0}; # define YYTYPE unsigned char struct yywork { YYTYPE verify, advance; } yycrank[] = { 0,0, 0,0, 1,9, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 1,10, 1,11, 0,0, 10,59, 0,0, 56,95, 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, 1,12, 10,59, 6,53, 56,95, 1,13, 0,0, 1,14, 1,15, 1,16, 1,17, 1,18, 1,19, 1,20, 1,21, 1,22, 4,49, 16,60, 21,61, 49,85, 50,86, 4,50, 0,0, 0,0, 0,0, 1,23, 1,24, 1,25, 1,26, 1,27, 23,63, 1,9, 1,28, 22,62, 22,62, 22,62, 22,62, 22,62, 22,62, 22,62, 22,62, 22,62, 22,62, 25,64, 25,65, 27,66, 0,0, 7,55, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 7,56, 7,57, 0,0, 1,29, 8,58, 1,30, 6,54, 1,9, 90,108, 1,31, 1,32, 1,28, 1,33, 1,34, 1,35, 1,28, 1,36, 1,37, 1,28, 1,28, 1,38, 1,28, 1,39, 1,40, 1,28, 1,28, 1,28, 1,28, 1,41, 1,28, 1,42, 1,43, 1,28, 1,28, 1,28, 1,44, 1,45, 1,46, 2,12, 7,55, 31,68, 32,69, 2,13, 33,70, 2,14, 2,15, 2,16, 2,17, 2,18, 2,19, 2,20, 2,21, 34,71, 35,73, 34,72, 7,55, 7,55, 38,77, 39,78, 35,74, 37,75, 40,79, 2,23, 2,24, 2,25, 2,26, 2,27, 41,80, 37,76, 42,83, 43,84, 68,96, 69,97, 71,98, 41,81, 72,99, 73,100, 74,101, 77,102, 78,103, 80,104, 82,105, 83,106, 7,58, 41,82, 84,107, 7,55, 96,110, 7,55, 97,111, 3,47, 98,112, 101,113, 104,114, 105,115, 2,29, 107,116, 2,30, 3,47, 3,48, 110,118, 111,119, 2,32, 2,28, 2,33, 2,34, 2,35, 2,28, 2,36, 2,37, 2,28, 2,28, 2,38, 2,28, 2,39, 2,40, 2,28, 2,28, 2,28, 2,28, 2,41, 2,28, 2,42, 2,43, 2,28, 2,28, 2,28, 2,44, 2,45, 2,46, 5,51, 3,49, 113,120, 116,121, 117,122, 120,123, 3,50, 3,47, 5,51, 5,52, 108,117, 108,117, 108,117, 108,117, 108,117, 108,117, 108,117, 108,117, 108,117, 108,117, 123,125, 125,126, 0,0, 3,47, 3,47, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 5,53, 122,124, 122,124, 122,124, 122,124, 122,124, 122,124, 122,124, 122,124, 122,124, 122,124, 0,0, 0,0, 0,0, 5,51, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 3,47, 0,0, 3,47, 0,0, 0,0, 0,0, 0,0, 0,0, 0,0, 5,51, 5,51, 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, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 0,0, 5,54, 0,0, 0,0, 5,51, 0,0, 5,51, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 0,0, 0,0, 0,0, 0,0, 28,67, 0,0, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 28,67, 54,87, 54,88, 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, 54,87, 0,0, 54,89, 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, 54,90, 54,90, 54,90, 54,90, 54,90, 54,90, 54,90, 54,90, 54,90, 54,90, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 92,109, 0,0, 0,0, 54,91, 0,0, 54,92, 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, 54,93, 0,0, 0,0, 0,0, 0,0, 0,0, 54,94, 0,0, 0,0, 0,0}; struct yysvf yysvec[] = { 0, 0, 0, yycrank+-1, 0, yyvstop+1, yycrank+-93, yysvec+1, yyvstop+4, yycrank+-178, 0, yyvstop+7, yycrank+-8, yysvec+3, yyvstop+10, yycrank+-218, 0, yyvstop+13, yycrank+-3, yysvec+5, yyvstop+16, yycrank+-80, 0, yyvstop+19, yycrank+-1, yysvec+7, yyvstop+22, yycrank+0, 0, yyvstop+25, yycrank+4, 0, yyvstop+27, yycrank+0, 0, yyvstop+30, yycrank+0, 0, yyvstop+32, yycrank+0, 0, yyvstop+35, yycrank+0, 0, yyvstop+38, yycrank+0, 0, yyvstop+41, yycrank+4, 0, yyvstop+44, yycrank+0, 0, yyvstop+47, yycrank+0, 0, yyvstop+50, yycrank+0, 0, yyvstop+53, yycrank+0, 0, yyvstop+56, yycrank+10, 0, yyvstop+59, yycrank+19, 0, yyvstop+62, yycrank+3, 0, yyvstop+65, yycrank+0, 0, yyvstop+68, yycrank+16, 0, yyvstop+71, yycrank+0, 0, yyvstop+74, yycrank+18, 0, yyvstop+77, yycrank+251, 0, yyvstop+80, yycrank+0, 0, yyvstop+83, yycrank+0, 0, yyvstop+86, yycrank+15, yysvec+28, yyvstop+89, yycrank+16, yysvec+28, yyvstop+92, yycrank+21, yysvec+28, yyvstop+95, yycrank+33, yysvec+28, yyvstop+98, yycrank+31, yysvec+28, yyvstop+101, yycrank+0, yysvec+28, yyvstop+104, yycrank+47, yysvec+28, yyvstop+108, yycrank+45, yysvec+28, yyvstop+111, yycrank+42, yysvec+28, yyvstop+114, yycrank+48, yysvec+28, yyvstop+117, yycrank+52, yysvec+28, yyvstop+120, yycrank+61, yysvec+28, yyvstop+123, yycrank+55, yysvec+28, yyvstop+126, yycrank+0, 0, yyvstop+129, yycrank+0, 0, yyvstop+132, yycrank+0, 0, yyvstop+135, yycrank+0, 0, yyvstop+138, yycrank+0, 0, yyvstop+140, yycrank+6, 0, yyvstop+142, yycrank+12, 0, yyvstop+144, yycrank+0, 0, yyvstop+146, yycrank+0, 0, yyvstop+148, yycrank+0, 0, yyvstop+150, yycrank+365, 0, yyvstop+153, yycrank+0, 0, yyvstop+156, yycrank+6, 0, yyvstop+158, yycrank+0, 0, yyvstop+161, yycrank+0, 0, yyvstop+163, yycrank+0, yysvec+10, yyvstop+166, yycrank+0, 0, yyvstop+168, yycrank+0, 0, yyvstop+170, yycrank+0, yysvec+22, yyvstop+172, yycrank+0, 0, yyvstop+174, yycrank+0, 0, yyvstop+176, yycrank+0, 0, yyvstop+178, yycrank+0, 0, yyvstop+180, yycrank+0, yysvec+28, yyvstop+182, yycrank+46, yysvec+28, yyvstop+184, yycrank+60, yysvec+28, yyvstop+186, yycrank+0, yysvec+28, yyvstop+188, yycrank+47, yysvec+28, yyvstop+191, yycrank+64, yysvec+28, yyvstop+193, yycrank+51, yysvec+28, yyvstop+195, yycrank+56, yysvec+28, yyvstop+197, yycrank+0, yysvec+28, yyvstop+199, yycrank+0, yysvec+28, yyvstop+202, yycrank+51, yysvec+28, yyvstop+205, yycrank+60, yysvec+28, yyvstop+207, yycrank+0, yysvec+28, yyvstop+209, yycrank+68, yysvec+28, yyvstop+212, yycrank+0, yysvec+28, yyvstop+214, yycrank+58, yysvec+28, yyvstop+217, yycrank+57, yysvec+28, yyvstop+219, yycrank+69, yysvec+28, yyvstop+221, yycrank+0, 0, yyvstop+223, yycrank+0, 0, yyvstop+225, yycrank+0, 0, yyvstop+227, yycrank+0, 0, yyvstop+229, yycrank+0, 0, yyvstop+231, yycrank+5, 0, 0, yycrank+0, 0, yyvstop+233, yycrank+359, 0, 0, yycrank+0, 0, yyvstop+235, yycrank+0, 0, yyvstop+237, yycrank+0, yysvec+56, yyvstop+239, yycrank+79, yysvec+28, yyvstop+241, yycrank+81, yysvec+28, yyvstop+243, yycrank+79, yysvec+28, yyvstop+245, yycrank+0, yysvec+28, yyvstop+247, yycrank+0, yysvec+28, yyvstop+250, yycrank+82, yysvec+28, yyvstop+253, yycrank+0, yysvec+28, yyvstop+255, yycrank+0, yysvec+28, yyvstop+258, yycrank+72, yysvec+28, yyvstop+261, yycrank+82, yysvec+28, yyvstop+263, yycrank+0, yysvec+28, yyvstop+265, yycrank+77, yysvec+28, yyvstop+268, yycrank+181, 0, 0, yycrank+0, 0, yyvstop+270, yycrank+68, yysvec+28, yyvstop+272, yycrank+83, yysvec+28, yyvstop+274, yycrank+0, yysvec+28, yyvstop+276, yycrank+105, yysvec+28, yyvstop+279, yycrank+0, yysvec+28, yyvstop+281, yycrank+0, yysvec+28, yyvstop+284, yycrank+121, yysvec+28, yyvstop+287, yycrank+131, 0, 0, yycrank+0, yysvec+28, yyvstop+289, yycrank+0, yysvec+28, yyvstop+292, yycrank+119, yysvec+28, yyvstop+295, yycrank+0, yysvec+28, yyvstop+297, yycrank+205, 0, 0, yycrank+128, yysvec+28, yyvstop+300, yycrank+0, 0, yyvstop+302, yycrank+130, yysvec+28, yyvstop+304, yycrank+0, yysvec+28, yyvstop+306, 0, 0, 0}; struct yywork *yytop = yycrank+481; struct yysvf *yybgin = yysvec+1; unsigned char yymatch[] = { 00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 011 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , '0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' , '0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 , '@' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' , 'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' , 'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' , 'A' ,'A' ,'A' ,'@' ,'@' ,'@' ,'@' ,'_' , 01 ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' , 'a' ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' , 'a' ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' ,'a' , 'a' ,'a' ,'a' ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 , 0}; unsigned char yyextra[] = { 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}; /* * (c) Copyright 1990, OPEN SOFTWARE FOUNDATION, INC. * ALL RIGHTS RESERVED */ /* * OSF/1 Release 1.0 */ /* # # IBM CONFIDENTIAL # Copyright International Business Machines Corp. 1989 # Unpublished Work # All Rights Reserved # Licensed Material - Property of IBM # # # US Government Users Restricted Rights - Use, duplication or # disclosure restricted by GSA ADP Schedule Contract with IBM Corp. # */ /* @(#)ncform 1.3 com/lib/l,3.1,8951 9/7/89 18:48:47 */ int yylineno =1; # define YYU(x) x # define NLSTATE yyprevious=YYNEWLINE unsigned char yytext[YYLMAX]; struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp; unsigned char yysbuf[YYLMAX]; unsigned char *yysptr = yysbuf; int *yyfnd; extern struct yysvf *yyestate; int yyprevious = YYNEWLINE; yylook(){ register struct yysvf *yystate, **lsp; register struct yywork *yyt; struct yysvf *yyz; int yych, yyfirst; struct yywork *yyr; # ifdef LEXDEBUG int debug; # endif unsigned char *yylastch; /* start off machines */ # ifdef LEXDEBUG debug = 0; # endif yyfirst=1; if (!yymorfg) yylastch = yytext; else { yymorfg=0; yylastch = yytext+yyleng; } for(;;){ lsp = yylstate; yyestate = yystate = yybgin; if (yyprevious==YYNEWLINE) yystate++; for (;;){ # ifdef LEXDEBUG if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1); # endif yyt = yystate->yystoff; if(yyt == yycrank && !yyfirst){ /* may not be any transitions */ yyz = yystate->yyother; if(yyz == 0)break; if(yyz->yystoff == yycrank)break; } *yylastch++ = yych = input(); yyfirst=0; tryagain: # ifdef LEXDEBUG if(debug){ fprintf(yyout,"char "); allprint(yych); putchar('\n'); } # endif yyr = yyt; if ( yyt > yycrank){ yyt = yyr + yych; if (yyt <= yytop && yyt->verify+yysvec == yystate){ if(yyt->advance+yysvec == YYLERR) /* error transitions */ {unput(*--yylastch);break;} *lsp++ = yystate = yyt->advance+yysvec; goto contin; } } # ifdef YYOPTIM else if(yyt < yycrank) { /* r < yycrank */ yyt = yyr = yycrank+(yycrank-yyt); # ifdef LEXDEBUG if(debug)fprintf(yyout,"compressed state\n"); # endif yyt = yyt + yych; if(yyt <= yytop && yyt->verify+yysvec == yystate){ if(yyt->advance+yysvec == YYLERR) /* error transitions */ {unput(*--yylastch);break;} *lsp++ = yystate = yyt->advance+yysvec; goto contin; } yyt = yyr + YYU(yymatch[yych]); # ifdef LEXDEBUG if(debug){ fprintf(yyout,"try fall back character "); allprint(YYU(yymatch[yych])); putchar('\n'); } # endif if(yyt <= yytop && yyt->verify+yysvec == yystate){ if(yyt->advance+yysvec == YYLERR) /* error transition */ {unput(*--yylastch);break;} *lsp++ = yystate = yyt->advance+yysvec; goto contin; } } if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){ # ifdef LEXDEBUG if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1); # endif goto tryagain; } # endif else {unput(*--yylastch);break;} contin: # ifdef LEXDEBUG if(debug){ fprintf(yyout,"state %d char ",yystate-yysvec-1); allprint(yych); putchar('\n'); } # endif ; } # ifdef LEXDEBUG if(debug){ fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1); allprint(yych); putchar('\n'); } # endif while (lsp-- > yylstate){ *yylastch-- = 0; if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){ yyolsp = lsp; if(yyextra[*yyfnd]){ /* must backup */ while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){ lsp--; unput(*yylastch--); } } yyprevious = YYU(*yylastch); yylsp = lsp; yyleng = yylastch-yytext+1; yytext[yyleng] = 0; # ifdef LEXDEBUG if(debug){ fprintf(yyout,"\nmatch "); sprint(yytext); fprintf(yyout," action %d\n",*yyfnd); } # endif return(*yyfnd++); } unput(*yylastch); } if (yytext[0] == 0 /* && feof(yyin) */) { yysptr=yysbuf; return(0); } yyprevious = yytext[0] = input(); if (yyprevious>0) output(yyprevious); yylastch=yytext; # ifdef LEXDEBUG if(debug)putchar('\n'); # endif } } yyback(p, m) int *p; { if (p==0) return(0); while (*p) { if (*p++ == m) return(1); } return(0); } /* the following are only used in the lex library */ yyinput(){ return(input()); } yyoutput(c) int c; { output(c); } yyunput(c) int c; { unput(c); }