/* original parser id follows */ /* yysccsid[] = "@(#)yaccpar 1.9 (Berkeley) 02/21/93" */ /* (use YYMAJOR/YYMINOR for ifdefs dependent on parser version) */ #define YYBYACC 1 #define YYMAJOR 1 #define YYMINOR 9 #define YYCHECK "yyyymmdd" #define YYEMPTY (-1) #define yyclearin (yychar = YYEMPTY) #define yyerrok (yyerrflag = 0) #define YYRECOVERING() (yyerrflag != 0) #define YYENOMEM (-2) #define YYEOF 0 #ifndef yyparse #define yyparse calc_parse #endif /* yyparse */ #ifndef yylex #define yylex calc_lex #endif /* yylex */ #ifndef yyerror #define yyerror calc_error #endif /* yyerror */ #ifndef yychar #define yychar calc_char #endif /* yychar */ #ifndef yyval #define yyval calc_val #endif /* yyval */ #ifndef yylval #define yylval calc_lval #endif /* yylval */ #ifndef yydebug #define yydebug calc_debug #endif /* yydebug */ #ifndef yynerrs #define yynerrs calc_nerrs #endif /* yynerrs */ #ifndef yyerrflag #define yyerrflag calc_errflag #endif /* yyerrflag */ #ifndef yylhs #define yylhs calc_lhs #endif /* yylhs */ #ifndef yylen #define yylen calc_len #endif /* yylen */ #ifndef yydefred #define yydefred calc_defred #endif /* yydefred */ #ifndef yydgoto #define yydgoto calc_dgoto #endif /* yydgoto */ #ifndef yysindex #define yysindex calc_sindex #endif /* yysindex */ #ifndef yyrindex #define yyrindex calc_rindex #endif /* yyrindex */ #ifndef yygindex #define yygindex calc_gindex #endif /* yygindex */ #ifndef yytable #define yytable calc_table #endif /* yytable */ #ifndef yycheck #define yycheck calc_check #endif /* yycheck */ #ifndef yyname #define yyname calc_name #endif /* yyname */ #ifndef yyrule #define yyrule calc_rule #endif /* yyrule */ #define YYPREFIX "calc_" #define YYPURE 1 #line 2 "pure_calc.y" # include # include int regs[26]; int base; #ifdef YYBISON #define YYSTYPE int #define YYLEX_PARAM &yylval #define YYLEX_DECL() yylex(YYSTYPE *yylval) #define YYERROR_DECL() yyerror(const char *s) int YYLEX_DECL(); static void YYERROR_DECL(); #endif #line 117 "pure_calc.tab.c" #if ! defined(YYSTYPE) && ! defined(YYSTYPE_IS_DECLARED) /* Default: YYSTYPE is the semantic value type. */ typedef int YYSTYPE; # define YYSTYPE_IS_DECLARED 1 #endif /* compatibility with bison */ #ifdef YYPARSE_PARAM /* compatibility with FreeBSD */ # ifdef YYPARSE_PARAM_TYPE # define YYPARSE_DECL() yyparse(YYPARSE_PARAM_TYPE YYPARSE_PARAM) # else # define YYPARSE_DECL() yyparse(void *YYPARSE_PARAM) # endif #else # define YYPARSE_DECL() yyparse(void) #endif /* Parameters sent to lex. */ #ifdef YYLEX_PARAM # ifdef YYLEX_PARAM_TYPE # define YYLEX_DECL() yylex(YYSTYPE *yylval, YYLEX_PARAM_TYPE YYLEX_PARAM) # else # define YYLEX_DECL() yylex(YYSTYPE *yylval, void * YYLEX_PARAM) # endif # define YYLEX yylex(&yylval, YYLEX_PARAM) #else # define YYLEX_DECL() yylex(YYSTYPE *yylval) # define YYLEX yylex(&yylval) #endif /* Parameters sent to yyerror. */ #ifndef YYERROR_DECL #define YYERROR_DECL() yyerror(const char *s) #endif #ifndef YYERROR_CALL #define YYERROR_CALL(msg) yyerror(msg) #endif extern int YYPARSE_DECL(); #define DIGIT 257 #define LETTER 258 #define UMINUS 259 #define YYERRCODE 256 typedef short YYINT; static const YYINT calc_lhs[] = { -1, 0, 0, 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, }; static const YYINT calc_len[] = { 2, 0, 3, 3, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 2, }; static const YYINT calc_defred[] = { 1, 0, 0, 17, 0, 0, 0, 0, 0, 0, 3, 0, 15, 14, 0, 2, 0, 0, 0, 0, 0, 0, 0, 18, 0, 6, 0, 0, 0, 0, 9, 10, 11, }; static const YYINT calc_dgoto[] = { 1, 7, 8, 9, }; static const YYINT calc_sindex[] = { 0, -40, -7, 0, -55, -38, -38, 1, -29, -247, 0, -38, 0, 0, 22, 0, -38, -38, -38, -38, -38, -38, -38, 0, -29, 0, 51, 60, -20, -20, 0, 0, 0, }; static const YYINT calc_rindex[] = { 0, 0, 0, 0, 2, 0, 0, 0, 9, -9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, -6, 14, 5, 13, 0, 0, 0, }; static const YYINT calc_gindex[] = { 0, 0, 65, 0, }; #define YYTABLESIZE 220 static const YYINT calc_table[] = { 6, 16, 6, 10, 13, 5, 11, 5, 22, 17, 23, 15, 15, 20, 18, 7, 19, 22, 21, 4, 5, 0, 20, 8, 12, 0, 0, 21, 16, 16, 0, 0, 16, 16, 16, 13, 16, 0, 16, 15, 15, 0, 0, 7, 15, 15, 7, 15, 7, 15, 7, 8, 12, 0, 8, 12, 8, 0, 8, 22, 17, 0, 0, 25, 20, 18, 0, 19, 0, 21, 13, 14, 0, 0, 0, 0, 24, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 22, 17, 0, 0, 0, 20, 18, 16, 19, 22, 21, 0, 0, 0, 20, 18, 0, 19, 0, 21, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 8, 12, 0, 0, 0, 0, 0, 0, 0, 16, 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, 2, 3, 4, 3, 12, }; static const YYINT calc_check[] = { 40, 10, 40, 10, 10, 45, 61, 45, 37, 38, 257, 10, 10, 42, 43, 10, 45, 37, 47, 10, 10, -1, 42, 10, 10, -1, -1, 47, 37, 38, -1, -1, 41, 42, 43, 41, 45, -1, 47, 37, 38, -1, -1, 38, 42, 43, 41, 45, 43, 47, 45, 38, 38, -1, 41, 41, 43, -1, 45, 37, 38, -1, -1, 41, 42, 43, -1, 45, -1, 47, 5, 6, -1, -1, -1, -1, 11, -1, -1, -1, -1, 16, 17, 18, 19, 20, 21, 22, 37, 38, -1, -1, -1, 42, 43, 124, 45, 37, 47, -1, -1, -1, 42, 43, -1, 45, -1, 47, -1, -1, -1, -1, -1, -1, -1, 124, -1, -1, 124, -1, -1, -1, -1, -1, -1, -1, 124, -1, -1, 124, -1, -1, -1, -1, -1, -1, -1, 124, 124, -1, -1, -1, -1, -1, -1, -1, 124, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 256, 257, 258, 257, 258, }; #define YYFINAL 1 #ifndef YYDEBUG #define YYDEBUG 0 #endif #define YYMAXTOKEN 259 #define YYUNDFTOKEN 265 #define YYTRANSLATE(a) ((a) > YYMAXTOKEN ? YYUNDFTOKEN : (a)) #if YYDEBUG static const char *const calc_name[] = { "end-of-file",0,0,0,0,0,0,0,0,0,"'\\n'",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, 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, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 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, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,"DIGIT","LETTER","UMINUS",0,0,0,0,0,"illegal-symbol", }; static const char *const calc_rule[] = { "$accept : list", "list :", "list : list stat '\\n'", "list : list error '\\n'", "stat : expr", "stat : LETTER '=' expr", "expr : '(' expr ')'", "expr : expr '+' expr", "expr : expr '-' expr", "expr : expr '*' expr", "expr : expr '/' expr", "expr : expr '%' expr", "expr : expr '&' expr", "expr : expr '|' expr", "expr : '-' expr", "expr : LETTER", "expr : number", "number : DIGIT", "number : number DIGIT", }; #endif int yydebug; int yynerrs; /* define the initial stack-sizes */ #ifdef YYSTACKSIZE #undef YYMAXDEPTH #define YYMAXDEPTH YYSTACKSIZE #else #ifdef YYMAXDEPTH #define YYSTACKSIZE YYMAXDEPTH #else #define YYSTACKSIZE 10000 #define YYMAXDEPTH 10000 #endif #endif #define YYINITSTACKSIZE 200 typedef struct { unsigned stacksize; YYINT *s_base; YYINT *s_mark; YYINT *s_last; YYSTYPE *l_base; YYSTYPE *l_mark; } YYSTACKDATA; #line 72 "pure_calc.y" /* start of programs */ #ifdef YYBYACC static int YYLEX_DECL(); #endif int main (void) { while(!feof(stdin)) { yyparse(); } return 0; } static void YYERROR_DECL() { fprintf(stderr, "%s\n", s); } int YYLEX_DECL() { /* lexical analysis routine */ /* returns LETTER for a lower case letter, yylval = 0 through 25 */ /* return DIGIT for a digit, yylval = 0 through 9 */ /* all other characters are returned immediately */ int c; while( (c=getchar()) == ' ' ) { /* skip blanks */ } /* c is now nonblank */ if( islower( c )) { *yylval = c - 'a'; return ( LETTER ); } if( isdigit( c )) { *yylval = c - '0'; return ( DIGIT ); } return( c ); } #line 361 "pure_calc.tab.c" #if YYDEBUG #include /* needed for printf */ #endif #include /* needed for malloc, etc */ #include /* needed for memset */ /* allocate initial stack or double stack size, up to YYMAXDEPTH */ static int yygrowstack(YYSTACKDATA *data) { int i; unsigned newsize; YYINT *newss; YYSTYPE *newvs; if ((newsize = data->stacksize) == 0) newsize = YYINITSTACKSIZE; else if (newsize >= YYMAXDEPTH) return YYENOMEM; else if ((newsize *= 2) > YYMAXDEPTH) newsize = YYMAXDEPTH; i = (int) (data->s_mark - data->s_base); newss = (YYINT *)realloc(data->s_base, newsize * sizeof(*newss)); if (newss == 0) return YYENOMEM; data->s_base = newss; data->s_mark = newss + i; newvs = (YYSTYPE *)realloc(data->l_base, newsize * sizeof(*newvs)); if (newvs == 0) return YYENOMEM; data->l_base = newvs; data->l_mark = newvs + i; data->stacksize = newsize; data->s_last = data->s_base + newsize - 1; return 0; } #if YYPURE || defined(YY_NO_LEAKS) static void yyfreestack(YYSTACKDATA *data) { free(data->s_base); free(data->l_base); memset(data, 0, sizeof(*data)); } #else #define yyfreestack(data) /* nothing */ #endif #define YYABORT goto yyabort #define YYREJECT goto yyabort #define YYACCEPT goto yyaccept #define YYERROR goto yyerrlab int YYPARSE_DECL() { int yyerrflag; int yychar; YYSTYPE yyval; YYSTYPE yylval; /* variables for the parser stack */ YYSTACKDATA yystack; int yym, yyn, yystate; #if YYDEBUG const char *yys; if ((yys = getenv("YYDEBUG")) != 0) { yyn = *yys; if (yyn >= '0' && yyn <= '9') yydebug = yyn - '0'; } #endif yynerrs = 0; yyerrflag = 0; yychar = YYEMPTY; yystate = 0; #if YYPURE memset(&yystack, 0, sizeof(yystack)); #endif if (yystack.s_base == NULL && yygrowstack(&yystack) == YYENOMEM) goto yyoverflow; yystack.s_mark = yystack.s_base; yystack.l_mark = yystack.l_base; yystate = 0; *yystack.s_mark = 0; yyloop: if ((yyn = yydefred[yystate]) != 0) goto yyreduce; if (yychar < 0) { if ((yychar = YYLEX) < 0) yychar = YYEOF; #if YYDEBUG if (yydebug) { yys = yyname[YYTRANSLATE(yychar)]; printf("%sdebug: state %d, reading %d (%s)\n", YYPREFIX, yystate, yychar, yys); } #endif } if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 && yyn <= YYTABLESIZE && yycheck[yyn] == yychar) { #if YYDEBUG if (yydebug) printf("%sdebug: state %d, shifting to state %d\n", YYPREFIX, yystate, yytable[yyn]); #endif if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) { goto yyoverflow; } yystate = yytable[yyn]; *++yystack.s_mark = yytable[yyn]; *++yystack.l_mark = yylval; yychar = YYEMPTY; if (yyerrflag > 0) --yyerrflag; goto yyloop; } if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 && yyn <= YYTABLESIZE && yycheck[yyn] == yychar) { yyn = yytable[yyn]; goto yyreduce; } if (yyerrflag) goto yyinrecovery; YYERROR_CALL("syntax error"); goto yyerrlab; yyerrlab: ++yynerrs; yyinrecovery: if (yyerrflag < 3) { yyerrflag = 3; for (;;) { if ((yyn = yysindex[*yystack.s_mark]) && (yyn += YYERRCODE) >= 0 && yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE) { #if YYDEBUG if (yydebug) printf("%sdebug: state %d, error recovery shifting\ to state %d\n", YYPREFIX, *yystack.s_mark, yytable[yyn]); #endif if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) { goto yyoverflow; } yystate = yytable[yyn]; *++yystack.s_mark = yytable[yyn]; *++yystack.l_mark = yylval; goto yyloop; } else { #if YYDEBUG if (yydebug) printf("%sdebug: error recovery discarding state %d\n", YYPREFIX, *yystack.s_mark); #endif if (yystack.s_mark <= yystack.s_base) goto yyabort; --yystack.s_mark; --yystack.l_mark; } } } else { if (yychar == YYEOF) goto yyabort; #if YYDEBUG if (yydebug) { yys = yyname[YYTRANSLATE(yychar)]; printf("%sdebug: state %d, error recovery discards token %d (%s)\n", YYPREFIX, yystate, yychar, yys); } #endif yychar = YYEMPTY; goto yyloop; } yyreduce: #if YYDEBUG if (yydebug) printf("%sdebug: state %d, reducing by rule %d (%s)\n", YYPREFIX, yystate, yyn, yyrule[yyn]); #endif yym = yylen[yyn]; if (yym) yyval = yystack.l_mark[1-yym]; else memset(&yyval, 0, sizeof yyval); switch (yyn) { case 3: #line 34 "pure_calc.y" { yyerrok ; } break; case 4: #line 38 "pure_calc.y" { printf("%d\n",yystack.l_mark[0]);} break; case 5: #line 40 "pure_calc.y" { regs[yystack.l_mark[-2]] = yystack.l_mark[0]; } break; case 6: #line 44 "pure_calc.y" { yyval = yystack.l_mark[-1]; } break; case 7: #line 46 "pure_calc.y" { yyval = yystack.l_mark[-2] + yystack.l_mark[0]; } break; case 8: #line 48 "pure_calc.y" { yyval = yystack.l_mark[-2] - yystack.l_mark[0]; } break; case 9: #line 50 "pure_calc.y" { yyval = yystack.l_mark[-2] * yystack.l_mark[0]; } break; case 10: #line 52 "pure_calc.y" { yyval = yystack.l_mark[-2] / yystack.l_mark[0]; } break; case 11: #line 54 "pure_calc.y" { yyval = yystack.l_mark[-2] % yystack.l_mark[0]; } break; case 12: #line 56 "pure_calc.y" { yyval = yystack.l_mark[-2] & yystack.l_mark[0]; } break; case 13: #line 58 "pure_calc.y" { yyval = yystack.l_mark[-2] | yystack.l_mark[0]; } break; case 14: #line 60 "pure_calc.y" { yyval = - yystack.l_mark[0]; } break; case 15: #line 62 "pure_calc.y" { yyval = regs[yystack.l_mark[0]]; } break; case 17: #line 67 "pure_calc.y" { yyval = yystack.l_mark[0]; base = (yystack.l_mark[0]==0) ? 8 : 10; } break; case 18: #line 69 "pure_calc.y" { yyval = base * yystack.l_mark[-1] + yystack.l_mark[0]; } break; #line 630 "pure_calc.tab.c" } yystack.s_mark -= yym; yystate = *yystack.s_mark; yystack.l_mark -= yym; yym = yylhs[yyn]; if (yystate == 0 && yym == 0) { #if YYDEBUG if (yydebug) printf("%sdebug: after reduction, shifting from state 0 to\ state %d\n", YYPREFIX, YYFINAL); #endif yystate = YYFINAL; *++yystack.s_mark = YYFINAL; *++yystack.l_mark = yyval; if (yychar < 0) { if ((yychar = YYLEX) < 0) yychar = YYEOF; #if YYDEBUG if (yydebug) { yys = yyname[YYTRANSLATE(yychar)]; printf("%sdebug: state %d, reading %d (%s)\n", YYPREFIX, YYFINAL, yychar, yys); } #endif } if (yychar == YYEOF) goto yyaccept; goto yyloop; } if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 && yyn <= YYTABLESIZE && yycheck[yyn] == yystate) yystate = yytable[yyn]; else yystate = yydgoto[yym]; #if YYDEBUG if (yydebug) printf("%sdebug: after reduction, shifting from state %d \ to state %d\n", YYPREFIX, *yystack.s_mark, yystate); #endif if (yystack.s_mark >= yystack.s_last && yygrowstack(&yystack) == YYENOMEM) { goto yyoverflow; } *++yystack.s_mark = (YYINT) yystate; *++yystack.l_mark = yyval; goto yyloop; yyoverflow: YYERROR_CALL("yacc stack overflow"); yyabort: yyfreestack(&yystack); return (1); yyaccept: yyfreestack(&yystack); return (0); }