From e5ff1d3d4bc01d98b12d05f9cb85457c7f15c424 Mon Sep 17 00:00:00 2001 From: IronClawTrem Date: Tue, 6 Aug 2019 02:17:23 +0100 Subject: first commit --- src/tools/lcc/lburg/gram.c | 677 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 677 insertions(+) create mode 100644 src/tools/lcc/lburg/gram.c (limited to 'src/tools/lcc/lburg/gram.c') diff --git a/src/tools/lcc/lburg/gram.c b/src/tools/lcc/lburg/gram.c new file mode 100644 index 0000000..c09f897 --- /dev/null +++ b/src/tools/lcc/lburg/gram.c @@ -0,0 +1,677 @@ +#if defined(__STDC__) || defined(__cplusplus) +#define YYCONST const +#define YYPARAMS(x) x +#define YYDEFUN(name, arglist, args) name(args) +#define YYAND , +#define YYPTR void * +#else +#define YYCONST +#define YYPARAMS(x) () +#define YYDEFUN(name, arglist, args) name arglist args; +#define YYAND ; +#define YYPTR char * +#endif +#define YYBYACC 1 +#ifndef YYDONT_INCLUDE_STDIO +#include +#endif +#include /* for malloc/realloc/free */ +#line 2 "lburg/gram.y" +#include +#include "lburg.h" +/*lint -e616 -e527 -e652 -esym(552,yynerrs) -esym(563,yynewstate,yyerrlab) */ +static int yylineno = 0; +#line 8 "lburg/gram.y" +typedef union { + int n; + char *string; + Tree tree; +} YYSTYPE; +#line 37 "y.tab.c" +#define TERMINAL 257 +#define START 258 +#define PPERCENT 259 +#define ID 260 +#define TEMPLATE 261 +#define CODE 262 +#define INT 263 +#define YYERRCODE 256 +static YYCONST short yylhs[] = { -1, + 0, 0, 4, 4, 6, 6, 6, 6, 7, 7, + 5, 5, 5, 5, 1, 3, 3, 3, 2, +}; +static YYCONST short yylen[] = { 2, + 3, 1, 0, 2, 3, 3, 1, 2, 0, 4, + 0, 7, 2, 3, 1, 1, 4, 6, 1, +}; +static YYCONST short yydefred[] = { 3, + 0, 0, 0, 9, 0, 11, 7, 4, 8, 0, + 15, 0, 0, 0, 5, 6, 0, 13, 0, 0, + 14, 0, 10, 0, 0, 0, 0, 0, 19, 0, + 17, 0, 12, 0, 18, +}; +static YYCONST short yydgoto[] = { 1, + 12, 30, 25, 2, 13, 8, 10, +}; +static YYCONST short yysindex[] = { 0, + 0, -4, -2, 0, -250, 0, 0, 0, 0, -9, + 0, 1, -10, -49, 0, 0, 3, 0, -44, -248, + 0, -244, 0, -22, -242, -244, -245, -37, 0, 10, + 0, -244, 0, -20, 0, +}; +static YYCONST short yyrindex[] = { 0, + 0, 22, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 23, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, -39, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, +}; +static YYCONST short yygindex[] = { 0, + 11, 0, -23, 0, 0, 0, 0, +}; +#define YYTABLESIZE 255 +static YYCONST short yytable[] = { 18, + 15, 16, 28, 31, 16, 7, 32, 9, 34, 11, + 16, 20, 21, 22, 23, 24, 29, 26, 27, 33, + 35, 2, 1, 19, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 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, 17, 0, 0, 0, 11, + 14, 3, 4, 5, 6, +}; +static YYCONST short yycheck[] = { 10, + 10, 41, 26, 41, 44, 10, 44, 10, 32, 260, + 10, 61, 10, 58, 263, 260, 262, 40, 261, 10, + 41, 0, 0, 13, -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, -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, -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, 261, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, 256, -1, -1, -1, 260, + 260, 256, 257, 258, 259, +}; +#define YYFINAL 1 +#ifndef YYDEBUG +#define YYDEBUG 0 +#endif +#define YYMAXTOKEN 263 +#if YYDEBUG +static YYCONST char *YYCONST yyname[] = { +"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, +0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, +"TERMINAL","START","PPERCENT","ID","TEMPLATE","CODE","INT", +}; +static YYCONST char *YYCONST yyrule[] = { +"$accept : spec", +"spec : decls PPERCENT rules", +"spec : decls", +"decls :", +"decls : decls decl", +"decl : TERMINAL blist '\\n'", +"decl : START nonterm '\\n'", +"decl : '\\n'", +"decl : error '\\n'", +"blist :", +"blist : blist ID '=' INT", +"rules :", +"rules : rules nonterm ':' tree TEMPLATE cost '\\n'", +"rules : rules '\\n'", +"rules : rules error '\\n'", +"nonterm : ID", +"tree : ID", +"tree : ID '(' tree ')'", +"tree : ID '(' tree ',' tree ')'", +"cost : CODE", +}; +#endif +#define YYLEX yylex() +#define YYEMPTY -1 +#define yyclearin (yychar=(YYEMPTY)) +#define yyerrok (yyerrflag=0) +#ifndef YYINITDEPTH +#define YYINITDEPTH 200 +#endif +#ifdef YYSTACKSIZE +#ifndef YYMAXDEPTH +#define YYMAXDEPTH YYSTACKSIZE +#endif +#else +#ifdef YYMAXDEPTH +#define YYSTACKSIZE YYMAXDEPTH +#else +#define YYSTACKSIZE 500 +#define YYMAXDEPTH 500 +#endif +#endif +#ifndef YYMAXSTACKSIZE +#define YYMAXSTACKSIZE 10000 +#endif +int yydebug; +int yynerrs; +int yyerrflag; +int yychar; +YYSTYPE yyval; +YYSTYPE yylval; +static short *yyss; +static YYSTYPE *yyvs; +static int yystacksize; +#define yyfree(x) free(x) +extern int yylex(); + +static YYPTR +YYDEFUN (yymalloc, (bytes), unsigned bytes) +{ + YYPTR ptr = (YYPTR) malloc (bytes); + if (ptr != 0) return (ptr); + yyerror ("yyparse: memory exhausted"); + return (0); +} + +static YYPTR +YYDEFUN (yyrealloc, (old, bytes), YYPTR old YYAND unsigned bytes) +{ + YYPTR ptr = (YYPTR) realloc (old, bytes); + if (ptr != 0) return (ptr); + yyerror ("yyparse: memory exhausted"); + return (0); +} + +static int +#ifdef __GNUC__ +inline +#endif +yygrow () +{ +#if YYDEBUG + int old_stacksize = yystacksize; +#endif + short *new_yyss; + YYSTYPE *new_yyvs; + + if (yystacksize == YYMAXSTACKSIZE) + return (1); + yystacksize += (yystacksize + 1 ) / 2; + if (yystacksize > YYMAXSTACKSIZE) + yystacksize = YYMAXSTACKSIZE; +#if YYDEBUG + if (yydebug) + printf("yydebug: growing stack size from %d to %d\n", + old_stacksize, yystacksize); +#endif + new_yyss = (short *) yyrealloc ((char *)yyss, yystacksize * sizeof (short)); + if (new_yyss == 0) + return (1); + new_yyvs = (YYSTYPE *) yyrealloc ((char *)yyvs, yystacksize * sizeof (YYSTYPE)); + if (new_yyvs == 0) + { + yyfree (new_yyss); + return (1); + } + yyss = new_yyss; + yyvs = new_yyvs; + return (0); +} +#line 60 "lburg/gram.y" +#include +#include +#include +#include +#include + +int errcnt = 0; +FILE *infp = NULL; +FILE *outfp = NULL; +static char buf[BUFSIZ], *bp = buf; +static int ppercent = 0; +static int code = 0; + +static int get(void) { + if (*bp == 0) { + bp = buf; + *bp = 0; + if (fgets(buf, sizeof buf, infp) == NULL) + return EOF; + yylineno++; + while (buf[0] == '%' && buf[1] == '{' && buf[2] == '\n') { + for (;;) { + if (fgets(buf, sizeof buf, infp) == NULL) { + yywarn("unterminated %{...%}\n"); + return EOF; + } + yylineno++; + if (strcmp(buf, "%}\n") == 0) + break; + fputs(buf, outfp); + } + if (fgets(buf, sizeof buf, infp) == NULL) + return EOF; + yylineno++; + } + } + return *bp++; +} + +void yyerror(char *fmt, ...) { + va_list ap; + + va_start(ap, fmt); + if (yylineno > 0) + fprintf(stderr, "line %d: ", yylineno); + vfprintf(stderr, fmt, ap); + if (fmt[strlen(fmt)-1] != '\n') + fprintf(stderr, "\n"); + errcnt++; + va_end(ap); +} + +int yylex(void) { + int c; + + if (code) { + char *p; + bp += strspn(bp, " \t\f"); + p = strchr(bp, '\n'); + if (p == NULL) + p = strchr(bp, '\n'); + while (p > bp && isspace(p[-1])) + p--; + yylval.string = alloc(p - bp + 1); + strncpy(yylval.string, bp, p - bp); + yylval.string[p - bp] = 0; + bp = p; + code--; + return CODE; + } + while ((c = get()) != EOF) { + switch (c) { + case ' ': case '\f': case '\t': + continue; + case '\n': + case '(': case ')': case ',': + case ':': case '=': + return c; + } + if (c == '%' && *bp == '%') { + bp++; + return ppercent++ ? 0 : PPERCENT; + } else if (c == '%' && strncmp(bp, "term", 4) == 0 + && isspace(bp[4])) { + bp += 4; + return TERMINAL; + } else if (c == '%' && strncmp(bp, "start", 5) == 0 + && isspace(bp[5])) { + bp += 5; + return START; + } else if (c == '"') { + char *p = strchr(bp, '"'); + if (p == NULL) { + yyerror("missing \" in assembler template\n"); + p = strchr(bp, '\n'); + if (p == NULL) + p = strchr(bp, '\0'); + } + assert(p); + yylval.string = alloc(p - bp + 1); + strncpy(yylval.string, bp, p - bp); + yylval.string[p - bp] = 0; + bp = *p == '"' ? p + 1 : p; + code++; + return TEMPLATE; + } else if (isdigit(c)) { + int n = 0; + do { + int d = c - '0'; + if (n > (INT_MAX - d)/10) + yyerror("integer greater than %d\n", INT_MAX); + else + n = 10*n + d; + c = get(); + } while (c != EOF && isdigit(c)); + bp--; + yylval.n = n; + return INT; + } else if (isalpha(c)) { + char *p = bp - 1; + while (isalpha(*bp) || isdigit(*bp) || *bp == '_') + bp++; + yylval.string = alloc(bp - p + 1); + strncpy(yylval.string, p, bp - p); + yylval.string[bp - p] = 0; + return ID; + } else if (isprint(c)) + yyerror("invalid character `%c'\n", c); + else + yyerror("invalid character `\\%03o'\n", (unsigned char)c); + } + return 0; +} + +void yywarn(char *fmt, ...) { + va_list ap; + + va_start(ap, fmt); + if (yylineno > 0) + fprintf(stderr, "line %d: ", yylineno); + fprintf(stderr, "warning: "); + vfprintf(stderr, fmt, ap); +} +#line 403 "y.tab.c" +#define YYABORT goto yyabort +#define YYACCEPT goto yyaccept +#define YYERROR goto yyerrlab + +#if YYDEBUG +#ifdef __cplusplus +extern "C" char *getenv(); +#else +extern char *getenv(); +#endif +#endif + +int +yyparse() +{ + register int yym, yyn, yystate; + register YYSTYPE *yyvsp; + register short *yyssp; + short *yysse; +#if YYDEBUG + register YYCONST char *yys; + + if (yys = getenv("YYDEBUG")) + { + yyn = *yys; + if (yyn >= '0' && yyn <= '9') + yydebug = yyn - '0'; + } +#endif + + yynerrs = 0; + yyerrflag = 0; + yychar = (-1); + + if (yyss == 0) + { + yyss = (short *) yymalloc (YYSTACKSIZE * sizeof (short)); + if (yyss == 0) + goto yyabort; + yyvs = (YYSTYPE *) yymalloc (YYSTACKSIZE * sizeof (YYSTYPE)); + if (yyvs == 0) + { + yyfree (yyss); + goto yyabort; + } + yystacksize = YYSTACKSIZE; + } + yysse = yyss + yystacksize - 1; + yyssp = yyss; + yyvsp = yyvs; + *yyssp = yystate = 0; + goto yyloop; + +yypush_lex: + yyval = yylval; + yystate = yytable[yyn]; +yypush: + if (yyssp >= yysse) + { + int depth = yyssp - yyss; + if (yygrow() != 0) + goto yyoverflow; + yysse = yyss + yystacksize -1; + yyssp = depth + yyss; + yyvsp = depth + yyvs; + } + *++yyssp = yystate; + *++yyvsp = yyval; + +yyloop: + if ((yyn = yydefred[yystate])) goto yyreduce; + yyn = yysindex[yystate]; + if (yychar < 0) + { + if ((yychar = yylex()) < 0) yychar = 0; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("yydebug: state %d, reading %d (%s)\n", yystate, + yychar, yys); + } +#endif + } + if (yyn != 0 + && ((yyn += yychar), ((unsigned)yyn <= (unsigned)YYTABLESIZE)) + && yycheck[yyn] == yychar) + { +#if YYDEBUG + if (yydebug) + printf("yydebug: state %d, shifting to state %d\n", + yystate, yytable[yyn]); +#endif + if (yyerrflag > 0) --yyerrflag; + yychar = (-1); + goto yypush_lex; + } + yyn = yyrindex[yystate]; + if (yyn != 0 + && ((yyn += yychar), ((unsigned)yyn <= (unsigned)YYTABLESIZE)) + && yycheck[yyn] == yychar) + { + yyn = yytable[yyn]; + goto yyreduce; + } + if (yyerrflag) goto yyinrecovery; +#ifdef lint + goto yynewerror; +yynewerror: +#endif + yyerror("syntax error"); +#ifdef lint + goto yyerrlab; +yyerrlab: +#endif + ++yynerrs; +yyinrecovery: + if (yyerrflag < 3) + { + yyerrflag = 3; + for (;;) + { + yyn = yysindex[*yyssp]; + if (yyn != 0 + && ((yyn += YYERRCODE), ((unsigned)yyn <= (unsigned)YYTABLESIZE)) + && yycheck[yyn] == YYERRCODE) + { +#if YYDEBUG + if (yydebug) + printf("yydebug: state %d, error recovery shifting\ + to state %d\n", *yyssp, yytable[yyn]); +#endif + goto yypush_lex; + } + else + { +#if YYDEBUG + if (yydebug) + printf("yydebug: error recovery discarding state %d\n", + *yyssp); +#endif + if (yyssp <= yyss) goto yyabort; + --yyssp; + --yyvsp; + } + } + } + else + { + if (yychar == 0) goto yyabort; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("yydebug: state %d, error recovery discards token %d (%s)\n", + yystate, yychar, yys); + } +#endif + yychar = (-1); + goto yyloop; + } +yyreduce: +#if YYDEBUG + if (yydebug) + printf("yydebug: state %d, reducing by rule %d (%s)\n", + yystate, yyn, yyrule[yyn]); +#endif + yym = yylen[yyn]; + yyval = yyvsp[1-yym]; + switch (yyn) + { +case 1: +#line 22 "lburg/gram.y" +{ yylineno = 0; } +break; +case 2: +#line 23 "lburg/gram.y" +{ yylineno = 0; } +break; +case 6: +#line 31 "lburg/gram.y" +{ + if (nonterm(yyvsp[-1].string)->number != 1) + yyerror("redeclaration of the start symbol\n"); + } +break; +case 8: +#line 36 "lburg/gram.y" +{ yyerrok; } +break; +case 10: +#line 40 "lburg/gram.y" +{ term(yyvsp[-2].string, yyvsp[0].n); } +break; +case 12: +#line 44 "lburg/gram.y" +{ rule(yyvsp[-5].string, yyvsp[-3].tree, yyvsp[-2].string, yyvsp[-1].string); } +break; +case 14: +#line 46 "lburg/gram.y" +{ yyerrok; } +break; +case 15: +#line 49 "lburg/gram.y" +{ nonterm(yyval.string = yyvsp[0].string); } +break; +case 16: +#line 52 "lburg/gram.y" +{ yyval.tree = tree(yyvsp[0].string, 0, 0); } +break; +case 17: +#line 53 "lburg/gram.y" +{ yyval.tree = tree(yyvsp[-3].string, yyvsp[-1].tree, 0); } +break; +case 18: +#line 54 "lburg/gram.y" +{ yyval.tree = tree(yyvsp[-5].string, yyvsp[-3].tree, yyvsp[-1].tree); } +break; +case 19: +#line 57 "lburg/gram.y" +{ if (*yyvsp[0].string == 0) yyval.string = "0"; } +break; +#line 630 "y.tab.c" + } + yyssp -= yym; + yyvsp -= yym; + yym = yylhs[yyn]; + yystate = *yyssp; + if (yystate == 0 && yym == 0) + { +#if YYDEBUG + if (yydebug) + printf("yydebug: after reduction, shifting from state 0 to\ + state %d\n", YYFINAL); +#endif + yystate = YYFINAL; + *++yyssp = YYFINAL; + *++yyvsp = yyval; + if (yychar < 0) + { + if ((yychar = yylex()) < 0) yychar = 0; +#if YYDEBUG + if (yydebug) + { + yys = 0; + if (yychar <= YYMAXTOKEN) yys = yyname[yychar]; + if (!yys) yys = "illegal-symbol"; + printf("yydebug: state %d, reading %d (%s)\n", + YYFINAL, yychar, yys); + } +#endif + } + if (yychar == 0) goto yyaccept; + goto yyloop; + } + yyn = yygindex[yym]; + if (yyn != 0 + && ((yyn += yystate), ((unsigned)yyn <= (unsigned)YYTABLESIZE)) + && yycheck[yyn] == yystate) + yystate = yytable[yyn]; + else + yystate = yydgoto[yym]; +#if YYDEBUG + if (yydebug) + printf("yydebug: after reduction, shifting from state %d \ +to state %d\n", *yyssp, yystate); +#endif + goto yypush; +yyoverflow: + yyerror("yacc stack overflow"); +yyabort: + return (1); +yyaccept: + return (0); +} -- cgit