X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perly.c;h=b71f95a952c77e38d5ec36cf848ba6c442df098d;hb=c0e1089ae3d29de8c9817373e1b7f36eaf9a9cd8;hp=641971b401e42571bce09b021d7caa4e10f8fe67;hpb=36ce8bec6e5bbc05c8d60ee17f105fc8b751cada;p=p5sagit%2Fp5-mst-13.2.git diff --git a/perly.c b/perly.c index 641971b..b71f95a 100644 --- a/perly.c +++ b/perly.c @@ -1,2463 +1,710 @@ -char rcsid[] = "$Header: perly.c,v 1.0.1.1 88/01/21 21:25:57 root Exp $"; -/* - * $Log: perly.c,v $ - * Revision 1.0.1.1 88/01/21 21:25:57 root - * Now uses CPP and CPPMINUS symbols from config.h. - * - * Revision 1.0 87/12/18 15:53:31 root - * Initial revision +/* perly.c + * + * Copyright (c) 2004 Larry Wall + * + * You may distribute under the terms of either the GNU General Public + * License or the Artistic License, as specified in the README file. * + * Note that this file was originally generated as an output from + * GNU bison version 1.875, but now the code is statically maintained + * and edited; the bits that are dependent on perly.y are now #included + * from the files perly.tab and perly.act. + * + * Here is an important copyright statement from the original, generated + * file: + * + * As a special exception, when this file is copied by Bison into a + * Bison output file, you may use that output file without + * restriction. This special exception was added by the Free + * Software Foundation in version 1.24 of Bison. */ -bool preprocess = FALSE; -bool assume_n = FALSE; -bool assume_p = FALSE; -bool doswitches = FALSE; -char *filename; -char *e_tmpname = "/tmp/perl-eXXXXXX"; -FILE *e_fp = Nullfp; -ARG *l(); - -main(argc,argv,env) -register int argc; -register char **argv; -register char **env; -{ - register STR *str; - register char *s; - char *index(); - - linestr = str_new(80); - str = str_make("-I/usr/lib/perl "); /* first used for -I flags */ - for (argc--,argv++; argc; argc--,argv++) { - if (argv[0][0] != '-' || !argv[0][1]) - break; - reswitch: - switch (argv[0][1]) { -#ifdef DEBUGGING - case 'D': - debug = atoi(argv[0]+2); -#ifdef YYDEBUG - yydebug = (debug & 1); -#endif - break; -#endif - case 'e': - if (!e_fp) { - mktemp(e_tmpname); - e_fp = fopen(e_tmpname,"w"); - } - if (argv[1]) - fputs(argv[1],e_fp); - putc('\n', e_fp); - argc--,argv++; - break; - case 'i': - inplace = savestr(argv[0]+2); - argvoutstab = stabent("ARGVOUT",TRUE); - break; - case 'I': - str_cat(str,argv[0]); - str_cat(str," "); - if (!argv[0][2]) { - str_cat(str,argv[1]); - argc--,argv++; - str_cat(str," "); - } - break; - case 'n': - assume_n = TRUE; - strcpy(argv[0], argv[0]+1); - goto reswitch; - case 'p': - assume_p = TRUE; - strcpy(argv[0], argv[0]+1); - goto reswitch; - case 'P': - preprocess = TRUE; - strcpy(argv[0], argv[0]+1); - goto reswitch; - case 's': - doswitches = TRUE; - strcpy(argv[0], argv[0]+1); - goto reswitch; - case 'v': - version(); - exit(0); - case '-': - argc--,argv++; - goto switch_end; - case 0: - break; - default: - fatal("Unrecognized switch: %s\n",argv[0]); - } - } - switch_end: - if (e_fp) { - fclose(e_fp); - argc++,argv--; - argv[0] = e_tmpname; - } - str_set(&str_no,No); - str_set(&str_yes,Yes); - init_eval(); - - /* open script */ - - if (argv[0] == Nullch) - argv[0] = "-"; - filename = savestr(argv[0]); - if (strEQ(filename,"-")) - argv[0] = ""; - if (preprocess) { - sprintf(buf, "\ -/bin/sed -e '/^[^#]/b' \ - -e '/^#[ ]*include[ ]/b' \ - -e '/^#[ ]*define[ ]/b' \ - -e '/^#[ ]*if[ ]/b' \ - -e '/^#[ ]*ifdef[ ]/b' \ - -e '/^#[ ]*else/b' \ - -e '/^#[ ]*endif/b' \ - -e 's/^#.*//' \ - %s | %s -C %s%s", - argv[0], CPP, str_get(str), CPPMINUS); - rsfp = popen(buf,"r"); - } - else if (!*argv[0]) - rsfp = stdin; - else - rsfp = fopen(argv[0],"r"); - if (rsfp == Nullfp) - fatal("Perl script \"%s\" doesn't seem to exist.\n",filename); - str_free(str); /* free -I directories */ +/* allow stack size to grow effectively without limit */ +#define YYMAXDEPTH 10000000 - defstab = stabent("_",TRUE); +#include "EXTERN.h" +#define PERL_IN_PERLY_C +#include "perl.h" - /* init tokener */ +typedef signed char yysigned_char; - bufptr = str_get(linestr); +#ifdef DEBUGGING +# define YYDEBUG 1 +#else +# define YYDEBUG 0 +#endif - /* now parse the report spec */ +/* contains all the parser state tables; auto-generated from perly.y */ +#include "perly.tab" - if (yyparse()) - fatal("Execution aborted due to compilation errors.\n"); +# define YYSIZE_T size_t - if (e_fp) { - e_fp = Nullfp; - UNLINK(e_tmpname); - } - argc--,argv++; /* skip name of script */ - if (doswitches) { - for (; argc > 0 && **argv == '-'; argc--,argv++) { - if (argv[0][1] == '-') { - argc--,argv++; - break; - } - str_numset(stabent(argv[0]+1,TRUE)->stab_val,(double)1.0); - } - } - if (argvstab = stabent("ARGV",FALSE)) { - for (; argc > 0; argc--,argv++) { - apush(argvstab->stab_array,str_make(argv[0])); - } - } - if (envstab = stabent("ENV",FALSE)) { - for (; *env; env++) { - if (!(s = index(*env,'='))) - continue; - *s++ = '\0'; - str = str_make(s); - str->str_link.str_magic = envstab; - hstore(envstab->stab_hash,*env,str); - *--s = '='; - } - } - sigstab = stabent("SIG",FALSE); +#define yyerrok (yyerrstatus = 0) +#define yyclearin (yychar = YYEMPTY) +#define YYEMPTY (-2) +#define YYEOF 0 - magicalize("!#?^~=-%0123456789.+&*(),\\/[|"); +#define YYACCEPT goto yyacceptlab +#define YYABORT goto yyabortlab +#define YYERROR goto yyerrlab1 - (tmpstab = stabent("0",FALSE)) && str_set(STAB_STR(tmpstab),filename); - (tmpstab = stabent("$",FALSE)) && - str_numset(STAB_STR(tmpstab),(double)getpid()); - tmpstab = stabent("stdin",TRUE); - tmpstab->stab_io = stio_new(); - tmpstab->stab_io->fp = stdin; +/* Like YYERROR except do call yyerror. This remains here temporarily + to ease the transition to the new meaning of YYERROR, for GCC. + Once GCC version 2 has supplanted version 1, this can go. */ - tmpstab = stabent("stdout",TRUE); - tmpstab->stab_io = stio_new(); - tmpstab->stab_io->fp = stdout; - defoutstab = tmpstab; - curoutstab = tmpstab; +#define YYFAIL goto yyerrlab - tmpstab = stabent("stderr",TRUE); - tmpstab->stab_io = stio_new(); - tmpstab->stab_io->fp = stderr; +#define YYRECOVERING() (!!yyerrstatus) - setjmp(top_env); /* sets goto_targ on longjump */ +#define YYBACKUP(Token, Value) \ +do \ + if (yychar == YYEMPTY && yylen == 1) { \ + yychar = (Token); \ + yylval = (Value); \ + yytoken = YYTRANSLATE (yychar); \ + YYPOPSTACK; \ + goto yybackup; \ + } \ + else { \ + yyerror ("syntax error: cannot back up"); \ + YYERROR; \ + } \ +while (0) -#ifdef DEBUGGING - if (debug & 1024) - dump_cmd(main_root,Nullcmd); - if (debug) - fprintf(stderr,"\nEXECUTING...\n\n"); -#endif +#define YYTERROR 1 +#define YYERRCODE 256 - /* do it */ +/* Enable debugging if requested. */ +#ifdef DEBUGGING - (void) cmd_exec(main_root); +# define yydebug (DEBUG_p_TEST) + +# define YYFPRINTF PerlIO_printf + +# define YYDPRINTF(Args) \ +do { \ + if (yydebug) \ + YYFPRINTF Args; \ +} while (0) + +# define YYDSYMPRINT(Args) \ +do { \ + if (yydebug) \ + yysymprint Args; \ +} while (0) + +# define YYDSYMPRINTF(Title, Token, Value) \ +do { \ + if (yydebug) { \ + YYFPRINTF (Perl_debug_log, "%s ", Title); \ + yysymprint (aTHX_ Perl_debug_log, Token, Value); \ + YYFPRINTF (Perl_debug_log, "\n"); \ + } \ +} while (0) + +/*--------------------------------. +| Print this symbol on YYOUTPUT. | +`--------------------------------*/ + +static void +yysymprint (pTHX_ PerlIO *yyoutput, int yytype, const YYSTYPE *yyvaluep) +{ + if (yytype < YYNTOKENS) { + YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); +# ifdef YYPRINT + YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); +# else + YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival); +# endif + } + else + YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); - if (goto_targ) - fatal("Can't find label \"%s\"--aborting.\n",goto_targ); - exit(0); + YYFPRINTF (yyoutput, ")"); } -magicalize(list) -register char *list; -{ - register STAB *stab; - char sym[2]; - - sym[1] = '\0'; - while (*sym = *list++) { - if (stab = stabent(sym,FALSE)) { - stab->stab_flags = SF_VMAGIC; - stab->stab_val->str_link.str_magic = stab; - } - } -} -#define RETURN(retval) return (bufptr = s,retval) -#define OPERATOR(retval) return (expectterm = TRUE,bufptr = s,retval) -#define TERM(retval) return (expectterm = FALSE,bufptr = s,retval) -#define LOOPX(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,LOOPEX) -#define UNI(f) return (yylval.ival = f,expectterm = TRUE,bufptr = s,UNIOP) -#define FUN0(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC0) -#define FUN1(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC1) -#define FUN2(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC2) -#define FUN3(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC3) -#define SFUN(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,STABFUN) - -yylex() +/* yy_stack_print() + * print the top 8 items on the parse stack. The args have the same + * meanings as the local vars in yyparse() of the same name */ + +static void +yy_stack_print (pTHX_ const short *yyss, const short *yyssp, const YYSTYPE *yyvs, const char**yyns) { - register char *s = bufptr; - register char *d; - register int tmp; - static bool in_format = FALSE; - static bool firstline = TRUE; - - retry: -#ifdef YYDEBUG - if (yydebug) - if (index(s,'\n')) - fprintf(stderr,"Tokener at %s",s); - else - fprintf(stderr,"Tokener at %s\n",s); -#endif - switch (*s) { - default: - fprintf(stderr, - "Unrecognized character %c in file %s line %d--ignoring.\n", - *s++,filename,line); - goto retry; - case 0: - s = str_get(linestr); - *s = '\0'; - if (firstline && (assume_n || assume_p)) { - firstline = FALSE; - str_set(linestr,"while (<>) {"); - s = str_get(linestr); - goto retry; - } - if (!rsfp) - RETURN(0); - if (in_format) { - yylval.formval = load_format(); /* leaves . in buffer */ - in_format = FALSE; - s = str_get(linestr); - TERM(FORMLIST); - } - line++; - if ((s = str_gets(linestr, rsfp)) == Nullch) { - if (preprocess) - pclose(rsfp); - else if (rsfp != stdin) - fclose(rsfp); - rsfp = Nullfp; - if (assume_n || assume_p) { - str_set(linestr,assume_p ? "}continue{print;" : ""); - str_cat(linestr,"}"); - s = str_get(linestr); - goto retry; - } - s = str_get(linestr); - RETURN(0); - } -#ifdef DEBUG - else if (firstline) { - char *showinput(); - s = showinput(); - } + int i; + int start = 1; + int count = (int)(yyssp - yyss); + + if (count > 8) { + start = count - 8 + 1; + count = 8; + } + + PerlIO_printf(Perl_debug_log, "\nindex:"); + for (i=0; i < count; i++) + PerlIO_printf(Perl_debug_log, " %8d", start+i); + PerlIO_printf(Perl_debug_log, "\nstate:"); + for (i=0, yyss += start; i < count; i++, yyss++) + PerlIO_printf(Perl_debug_log, " %8d", *yyss); + PerlIO_printf(Perl_debug_log, "\ntoken:"); + for (i=0, yyns += start; i < count; i++, yyns++) + PerlIO_printf(Perl_debug_log, " %8.8s", *yyns); + PerlIO_printf(Perl_debug_log, "\nvalue:"); + for (i=0, yyvs += start; i < count; i++, yyvs++) + PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)yyvs->ival); + PerlIO_printf(Perl_debug_log, "\n\n"); +} + +# define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) \ +do { \ + if (yydebug && DEBUG_v_TEST) \ + yy_stack_print (aTHX_ (yyss), (yyssp), (yyvs), (yyns)); \ +} while (0) + + +/*------------------------------------------------. +| Report that the YYRULE is going to be reduced. | +`------------------------------------------------*/ + +static void +yy_reduce_print (pTHX_ int yyrule) +{ + int yyi; + const unsigned int yylineno = yyrline[yyrule]; + YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ", + yyrule - 1, yylineno); + /* Print the symbols being reduced, and their result. */ + for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++) + YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]); + YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]); +} + +# define YY_REDUCE_PRINT(Rule) \ +do { \ + if (yydebug) \ + yy_reduce_print (aTHX_ Rule); \ +} while (0) + +#else /* !DEBUGGING */ +# define YYDPRINTF(Args) +# define YYDSYMPRINT(Args) +# define YYDSYMPRINTF(Title, Token, Value) +# define YY_STACK_PRINT(yyss, yyssp, yyvs, yyns) +# define YY_REDUCE_PRINT(Rule) +#endif /* !DEBUGGING */ + + +/* YYINITDEPTH -- initial size of the parser's stacks. */ +#ifndef YYINITDEPTH +# define YYINITDEPTH 200 #endif - firstline = FALSE; - goto retry; - case ' ': case '\t': - s++; - goto retry; - case '\n': - case '#': - if (preprocess && s == str_get(linestr) && - s[1] == ' ' && isdigit(s[2])) { - line = atoi(s+2)-1; - for (s += 2; isdigit(*s); s++) ; - while (*s && isspace(*s)) s++; - if (filename) - safefree(filename); - s[strlen(s)-1] = '\0'; /* wipe out newline */ - filename = savestr(s); - s = str_get(linestr); - } - *s = '\0'; - if (lex_newlines) - RETURN('\n'); - goto retry; - case '+': - case '-': - if (s[1] == *s) { - s++; - if (*s++ == '+') - RETURN(INC); - else - RETURN(DEC); - } - /* FALL THROUGH */ - case '*': - case '%': - case '^': - case '~': - case '(': - case ',': - case ':': - case ';': - case '{': - case '[': - tmp = *s++; - OPERATOR(tmp); - case ')': - case ']': - case '}': - tmp = *s++; - TERM(tmp); - case '&': - s++; - tmp = *s++; - if (tmp == '&') - OPERATOR(ANDAND); - s--; - OPERATOR('&'); - case '|': - s++; - tmp = *s++; - if (tmp == '|') - OPERATOR(OROR); - s--; - OPERATOR('|'); - case '=': - s++; - tmp = *s++; - if (tmp == '=') - OPERATOR(EQ); - if (tmp == '~') - OPERATOR(MATCH); - s--; - OPERATOR('='); - case '!': - s++; - tmp = *s++; - if (tmp == '=') - OPERATOR(NE); - if (tmp == '~') - OPERATOR(NMATCH); - s--; - OPERATOR('!'); - case '<': - if (expectterm) { - s = scanstr(s); - TERM(RSTRING); - } - s++; - tmp = *s++; - if (tmp == '<') - OPERATOR(LS); - if (tmp == '=') - OPERATOR(LE); - s--; - OPERATOR('<'); - case '>': - s++; - tmp = *s++; - if (tmp == '>') - OPERATOR(RS); - if (tmp == '=') - OPERATOR(GE); - s--; - OPERATOR('>'); - -#define SNARFWORD \ - d = tokenbuf; \ - while (isalpha(*s) || isdigit(*s) || *s == '_') \ - *d++ = *s++; \ - *d = '\0'; \ - d = tokenbuf; - - case '$': - if (s[1] == '#' && (isalpha(s[2]) || s[2] == '_')) { - s++; - s = scanreg(s,tokenbuf); - yylval.stabval = aadd(stabent(tokenbuf,TRUE)); - TERM(ARYLEN); - } - s = scanreg(s,tokenbuf); - yylval.stabval = stabent(tokenbuf,TRUE); - TERM(REG); - - case '@': - s = scanreg(s,tokenbuf); - yylval.stabval = aadd(stabent(tokenbuf,TRUE)); - TERM(ARY); - - case '/': /* may either be division or pattern */ - case '?': /* may either be conditional or pattern */ - if (expectterm) { - s = scanpat(s); - TERM(PATTERN); - } - tmp = *s++; - OPERATOR(tmp); - - case '.': - if (!expectterm || !isdigit(s[1])) { - s++; - tmp = *s++; - if (tmp == '.') - OPERATOR(DOTDOT); - s--; - OPERATOR('.'); - } - /* FALL THROUGH */ - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - case '\'': case '"': case '`': - s = scanstr(s); - TERM(RSTRING); - - case '_': - SNARFWORD; - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'a': case 'A': - SNARFWORD; - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'b': case 'B': - SNARFWORD; - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'c': case 'C': - SNARFWORD; - if (strEQ(d,"continue")) - OPERATOR(CONTINUE); - if (strEQ(d,"chdir")) - UNI(O_CHDIR); - if (strEQ(d,"close")) - OPERATOR(CLOSE); - if (strEQ(d,"crypt")) - FUN2(O_CRYPT); - if (strEQ(d,"chop")) - OPERATOR(CHOP); - if (strEQ(d,"chmod")) { - yylval.ival = O_CHMOD; - OPERATOR(PRINT); - } - if (strEQ(d,"chown")) { - yylval.ival = O_CHOWN; - OPERATOR(PRINT); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'd': case 'D': - SNARFWORD; - if (strEQ(d,"do")) - OPERATOR(DO); - if (strEQ(d,"die")) - UNI(O_DIE); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'e': case 'E': - SNARFWORD; - if (strEQ(d,"else")) - OPERATOR(ELSE); - if (strEQ(d,"elsif")) - OPERATOR(ELSIF); - if (strEQ(d,"eq") || strEQ(d,"EQ")) - OPERATOR(SEQ); - if (strEQ(d,"exit")) - UNI(O_EXIT); - if (strEQ(d,"eof")) - TERM(FEOF); - if (strEQ(d,"exp")) - FUN1(O_EXP); - if (strEQ(d,"each")) - SFUN(O_EACH); - if (strEQ(d,"exec")) { - yylval.ival = O_EXEC; - OPERATOR(PRINT); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'f': case 'F': - SNARFWORD; - if (strEQ(d,"for")) - OPERATOR(FOR); - if (strEQ(d,"format")) { - in_format = TRUE; - OPERATOR(FORMAT); - } - if (strEQ(d,"fork")) - FUN0(O_FORK); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'g': case 'G': - SNARFWORD; - if (strEQ(d,"gt") || strEQ(d,"GT")) - OPERATOR(SGT); - if (strEQ(d,"ge") || strEQ(d,"GE")) - OPERATOR(SGE); - if (strEQ(d,"goto")) - LOOPX(O_GOTO); - if (strEQ(d,"gmtime")) - FUN1(O_GMTIME); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'h': case 'H': - SNARFWORD; - if (strEQ(d,"hex")) - FUN1(O_HEX); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'i': case 'I': - SNARFWORD; - if (strEQ(d,"if")) - OPERATOR(IF); - if (strEQ(d,"index")) - FUN2(O_INDEX); - if (strEQ(d,"int")) - FUN1(O_INT); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'j': case 'J': - SNARFWORD; - if (strEQ(d,"join")) - OPERATOR(JOIN); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'k': case 'K': - SNARFWORD; - if (strEQ(d,"keys")) - SFUN(O_KEYS); - if (strEQ(d,"kill")) { - yylval.ival = O_KILL; - OPERATOR(PRINT); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'l': case 'L': - SNARFWORD; - if (strEQ(d,"last")) - LOOPX(O_LAST); - if (strEQ(d,"length")) - FUN1(O_LENGTH); - if (strEQ(d,"lt") || strEQ(d,"LT")) - OPERATOR(SLT); - if (strEQ(d,"le") || strEQ(d,"LE")) - OPERATOR(SLE); - if (strEQ(d,"localtime")) - FUN1(O_LOCALTIME); - if (strEQ(d,"log")) - FUN1(O_LOG); - if (strEQ(d,"link")) - FUN2(O_LINK); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'm': case 'M': - SNARFWORD; - if (strEQ(d,"m")) { - s = scanpat(s-1); - TERM(PATTERN); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'n': case 'N': - SNARFWORD; - if (strEQ(d,"next")) - LOOPX(O_NEXT); - if (strEQ(d,"ne") || strEQ(d,"NE")) - OPERATOR(SNE); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'o': case 'O': - SNARFWORD; - if (strEQ(d,"open")) - OPERATOR(OPEN); - if (strEQ(d,"ord")) - FUN1(O_ORD); - if (strEQ(d,"oct")) - FUN1(O_OCT); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'p': case 'P': - SNARFWORD; - if (strEQ(d,"print")) { - yylval.ival = O_PRINT; - OPERATOR(PRINT); - } - if (strEQ(d,"printf")) { - yylval.ival = O_PRTF; - OPERATOR(PRINT); - } - if (strEQ(d,"push")) { - yylval.ival = O_PUSH; - OPERATOR(PUSH); - } - if (strEQ(d,"pop")) - OPERATOR(POP); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'q': case 'Q': - SNARFWORD; - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'r': case 'R': - SNARFWORD; - if (strEQ(d,"reset")) - UNI(O_RESET); - if (strEQ(d,"redo")) - LOOPX(O_REDO); - if (strEQ(d,"rename")) - FUN2(O_RENAME); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 's': case 'S': - SNARFWORD; - if (strEQ(d,"s")) { - s = scansubst(s); - TERM(SUBST); - } - if (strEQ(d,"shift")) - TERM(SHIFT); - if (strEQ(d,"split")) - TERM(SPLIT); - if (strEQ(d,"substr")) - FUN3(O_SUBSTR); - if (strEQ(d,"sprintf")) - OPERATOR(SPRINTF); - if (strEQ(d,"sub")) - OPERATOR(SUB); - if (strEQ(d,"select")) - OPERATOR(SELECT); - if (strEQ(d,"seek")) - OPERATOR(SEEK); - if (strEQ(d,"stat")) - OPERATOR(STAT); - if (strEQ(d,"sqrt")) - FUN1(O_SQRT); - if (strEQ(d,"sleep")) - UNI(O_SLEEP); - if (strEQ(d,"system")) { - yylval.ival = O_SYSTEM; - OPERATOR(PRINT); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 't': case 'T': - SNARFWORD; - if (strEQ(d,"tr")) { - s = scantrans(s); - TERM(TRANS); - } - if (strEQ(d,"tell")) - TERM(TELL); - if (strEQ(d,"time")) - FUN0(O_TIME); - if (strEQ(d,"times")) - FUN0(O_TMS); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'u': case 'U': - SNARFWORD; - if (strEQ(d,"using")) - OPERATOR(USING); - if (strEQ(d,"until")) - OPERATOR(UNTIL); - if (strEQ(d,"unless")) - OPERATOR(UNLESS); - if (strEQ(d,"umask")) - FUN1(O_UMASK); - if (strEQ(d,"unshift")) { - yylval.ival = O_UNSHIFT; - OPERATOR(PUSH); - } - if (strEQ(d,"unlink")) { - yylval.ival = O_UNLINK; - OPERATOR(PRINT); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'v': case 'V': - SNARFWORD; - if (strEQ(d,"values")) - SFUN(O_VALUES); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'w': case 'W': - SNARFWORD; - if (strEQ(d,"write")) - TERM(WRITE); - if (strEQ(d,"while")) - OPERATOR(WHILE); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'x': case 'X': - SNARFWORD; - if (!expectterm && strEQ(d,"x")) - OPERATOR('x'); - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'y': case 'Y': - SNARFWORD; - if (strEQ(d,"y")) { - s = scantrans(s); - TERM(TRANS); - } - yylval.cval = savestr(d); - OPERATOR(WORD); - case 'z': case 'Z': - SNARFWORD; - yylval.cval = savestr(d); - OPERATOR(WORD); - } -} -STAB * -stabent(name,add) -register char *name; -int add; + +#if YYERROR_VERBOSE +# ifndef yystrlen +# if defined (__GLIBC__) && defined (_STRING_H) +# define yystrlen strlen +# else +/* Return the length of YYSTR. */ +static YYSIZE_T +yystrlen (const char *yystr) { - register STAB *stab; + register const char *yys = yystr; - for (stab = stab_index[*name]; stab; stab = stab->stab_next) { - if (strEQ(name,stab->stab_name)) - return stab; - } - - /* no entry--should we add one? */ - - if (add) { - stab = (STAB *) safemalloc(sizeof(STAB)); - bzero((char*)stab, sizeof(STAB)); - stab->stab_name = savestr(name); - stab->stab_val = str_new(0); - stab->stab_next = stab_index[*name]; - stab_index[*name] = stab; - return stab; - } - return Nullstab; + while (*yys++ != '\0') + continue; + + return yys - yystr - 1; } +# endif +# endif -STIO * -stio_new() +# ifndef yystpcpy +# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +static char * +yystpcpy (pTHX_ char *yydest, const char *yysrc) { - STIO *stio = (STIO *) safemalloc(sizeof(STIO)); + register char *yyd = yydest; + register const char *yys = yysrc; - bzero((char*)stio, sizeof(STIO)); - stio->page_len = 60; - return stio; -} + while ((*yyd++ = *yys++) != '\0') + continue; -char * -scanreg(s,dest) -register char *s; -char *dest; -{ - register char *d; - - s++; - d = dest; - while (isalpha(*s) || isdigit(*s) || *s == '_') - *d++ = *s++; - *d = '\0'; - d = dest; - if (!*d) { - *d = *s++; - if (*d == '{') { - d = dest; - while (*s && *s != '}') - *d++ = *s++; - *d = '\0'; - d = dest; - if (*s) - s++; - } - else - d[1] = '\0'; - } - if (*d == '^' && !isspace(*s)) - *d = *s++ & 31; - return s; + return yyd - 1; } +# endif +# endif -STR * -scanconst(string) -char *string; -{ - register STR *retstr; - register char *t; - register char *d; +#endif /* !YYERROR_VERBOSE */ - if (index(string,'|')) { - return Nullstr; - } - retstr = str_make(string); - t = str_get(retstr); - for (d=t; *d; ) { - switch (*d) { - case '.': case '[': case '$': case '(': case ')': case '|': - *d = '\0'; - break; - case '\\': - if (index("wWbB0123456789",d[1])) { - *d = '\0'; - break; - } - strcpy(d,d+1); - switch(*d) { - case 'n': - *d = '\n'; - break; - case 't': - *d = '\t'; - break; - case 'f': - *d = '\f'; - break; - case 'r': - *d = '\r'; - break; - } - /* FALL THROUGH */ - default: - if (d[1] == '*' || d[1] == '+' || d[1] == '?') { - *d = '\0'; - break; - } - d++; - } - } - if (!*t) { - str_free(retstr); - return Nullstr; - } - retstr->str_cur = strlen(retstr->str_ptr); /* XXX cheating here */ - return retstr; -} +/*----------. +| yyparse. | +`----------*/ -char * -scanpat(s) -register char *s; +int +Perl_yyparse (pTHX) { - register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); - register char *d; - - bzero((char *)spat, sizeof(SPAT)); - spat->spat_next = spat_root; /* link into spat list */ - spat_root = spat; - init_compex(&spat->spat_compex); - - switch (*s++) { - case 'm': - s++; - break; - case '/': - break; - case '?': - spat->spat_flags |= SPAT_USE_ONCE; - break; - default: - fatal("Search pattern not found:\n%s",str_get(linestr)); - } - s = cpytill(tokenbuf,s,s[-1]); - if (!*s) - fatal("Search pattern not terminated:\n%s",str_get(linestr)); - s++; - if (*tokenbuf == '^') { - spat->spat_first = scanconst(tokenbuf+1); - if (spat->spat_first) { - spat->spat_flen = strlen(spat->spat_first->str_ptr); - if (spat->spat_flen == strlen(tokenbuf+1)) - spat->spat_flags |= SPAT_SCANALL; - } - } - else { - spat->spat_flags |= SPAT_SCANFIRST; - spat->spat_first = scanconst(tokenbuf); - if (spat->spat_first) { - spat->spat_flen = strlen(spat->spat_first->str_ptr); - if (spat->spat_flen == strlen(tokenbuf)) - spat->spat_flags |= SPAT_SCANALL; - } - } - if (d = compile(&spat->spat_compex,tokenbuf,TRUE,FALSE)) - fatal(d); - yylval.arg = make_match(O_MATCH,stab_to_arg(A_STAB,defstab),spat); - return s; -} + int yychar; /* The lookahead symbol. */ + YYSTYPE yylval; /* The semantic value of the lookahead symbol. */ + int yynerrs; /* Number of syntax errors so far. */ + register int yystate; + register int yyn; + int yyresult; -char * -scansubst(s) -register char *s; -{ - register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); - register char *d; - - bzero((char *)spat, sizeof(SPAT)); - spat->spat_next = spat_root; /* link into spat list */ - spat_root = spat; - init_compex(&spat->spat_compex); - - s = cpytill(tokenbuf,s+1,*s); - if (!*s) - fatal("Substitution pattern not terminated:\n%s",str_get(linestr)); - for (d=tokenbuf; *d; d++) { - if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') { - register ARG *arg; - - spat->spat_runtime = arg = op_new(1); - arg->arg_type = O_ITEM; - arg[1].arg_type = A_DOUBLE; - arg[1].arg_ptr.arg_str = str_make(tokenbuf); - goto get_repl; /* skip compiling for now */ - } - } - if (*tokenbuf == '^') { - spat->spat_first = scanconst(tokenbuf+1); - if (spat->spat_first) - spat->spat_flen = strlen(spat->spat_first->str_ptr); - } - else { - spat->spat_flags |= SPAT_SCANFIRST; - spat->spat_first = scanconst(tokenbuf); - if (spat->spat_first) - spat->spat_flen = strlen(spat->spat_first->str_ptr); - } - if (d = compile(&spat->spat_compex,tokenbuf,TRUE,FALSE)) - fatal(d); -get_repl: - s = scanstr(s); - if (!*s) - fatal("Substitution replacement not terminated:\n%s",str_get(linestr)); - spat->spat_repl = yylval.arg; - if (*s == 'g') { - s++; - spat->spat_flags &= ~SPAT_USE_ONCE; - } - else - spat->spat_flags |= SPAT_USE_ONCE; - yylval.arg = make_match(O_SUBST,stab_to_arg(A_STAB,defstab),spat); - return s; -} + /* Number of tokens to shift before error messages enabled. */ + int yyerrstatus; + /* Lookahead token as an internal (translated) token number. */ + int yytoken = 0; -ARG * -make_split(stab,arg) -register STAB *stab; -register ARG *arg; -{ - if (arg->arg_type != O_MATCH) { - register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT)); - register char *d; + /* two stacks and their tools: + yyss: related to states, + yyvs: related to semantic values, - bzero((char *)spat, sizeof(SPAT)); - spat->spat_next = spat_root; /* link into spat list */ - spat_root = spat; - init_compex(&spat->spat_compex); + Refer to the stacks thru separate pointers, to allow yyoverflow + to reallocate them elsewhere. */ - spat->spat_runtime = arg; - arg = make_match(O_MATCH,stab_to_arg(A_STAB,defstab),spat); - } - arg->arg_type = O_SPLIT; - arg[2].arg_ptr.arg_spat->spat_repl = stab_to_arg(A_STAB,aadd(stab)); - return arg; -} + /* The state stack. */ + short *yyss; + register short *yyssp; -char * -expand_charset(s) -register char *s; -{ - char t[512]; - register char *d = t; - register int i; - - while (*s) { - if (s[1] == '-' && s[2]) { - for (i = s[0]; i <= s[2]; i++) - *d++ = i; - s += 3; - } - else - *d++ = *s++; - } - *d = '\0'; - return savestr(t); -} + /* The semantic value stack. */ + YYSTYPE *yyvs; + register YYSTYPE *yyvsp; -char * -scantrans(s) -register char *s; -{ - ARG *arg = - l(make_op(O_TRANS,2,stab_to_arg(A_STAB,defstab),Nullarg,Nullarg,0)); - register char *t; - register char *r; - register char *tbl = safemalloc(256); - register int i; - - arg[2].arg_type = A_NULL; - arg[2].arg_ptr.arg_cval = tbl; - for (i=0; i<256; i++) - tbl[i] = 0; - s = scanstr(s); - if (!*s) - fatal("Translation pattern not terminated:\n%s",str_get(linestr)); - t = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); - free_arg(yylval.arg); - s = scanstr(s-1); - if (!*s) - fatal("Translation replacement not terminated:\n%s",str_get(linestr)); - r = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str)); - free_arg(yylval.arg); - yylval.arg = arg; - if (!*r) { - safefree(r); - r = t; - } - for (i = 0; t[i]; i++) { - if (!r[i]) - r[i] = r[i-1]; - tbl[t[i] & 0377] = r[i]; - } - if (r != t) - safefree(r); - safefree(t); - return s; -} + /* for ease of re-allocation and automatic freeing, have two SVs whose + * SvPVX points to the stacks */ + SV *yyss_sv, *yyvs_sv; -CMD * -block_head(tail) -register CMD *tail; -{ - if (tail == Nullcmd) { - return tail; - } - return tail->c_head; -} +#ifdef DEBUGGING + /* maintain also a stack of token/rule names for debugging with -Dpv */ + const char **yyns, **yynsp; + SV *yyns_sv; +# define YYPOPSTACK (yyvsp--, yyssp--, yynsp--) +#else +# define YYPOPSTACK (yyvsp--, yyssp--) +#endif -CMD * -append_line(head,tail) -register CMD *head; -register CMD *tail; -{ - if (tail == Nullcmd) - return head; - if (!tail->c_head) /* make sure tail is well formed */ - tail->c_head = tail; - if (head != Nullcmd) { - tail = tail->c_head; /* get to start of tail list */ - if (!head->c_head) - head->c_head = head; /* start a new head list */ - while (head->c_next) { - head->c_next->c_head = head->c_head; - head = head->c_next; /* get to end of head list */ - } - head->c_next = tail; /* link to end of old list */ - tail->c_head = head->c_head; /* propagate head pointer */ - } - while (tail->c_next) { - tail->c_next->c_head = tail->c_head; - tail = tail->c_next; - } - return tail; -} -CMD * -make_acmd(type,stab,cond,arg) -int type; -STAB *stab; -ARG *cond; -ARG *arg; -{ - register CMD *cmd = (CMD *) safemalloc(sizeof (CMD)); - - bzero((char *)cmd, sizeof(CMD)); - cmd->c_type = type; - cmd->ucmd.acmd.ac_stab = stab; - cmd->ucmd.acmd.ac_expr = arg; - cmd->c_expr = cond; - if (cond) { - opt_arg(cmd,1); - cmd->c_flags |= CF_COND; - } - return cmd; -} + YYSIZE_T yystacksize = YYINITDEPTH; -CMD * -make_ccmd(type,arg,cblock) -int type; -register ARG *arg; -struct compcmd cblock; -{ - register CMD *cmd = (CMD *) safemalloc(sizeof (CMD)); - - bzero((char *)cmd, sizeof(CMD)); - cmd->c_type = type; - cmd->c_expr = arg; - cmd->ucmd.ccmd.cc_true = cblock.comp_true; - cmd->ucmd.ccmd.cc_alt = cblock.comp_alt; - if (arg) { - opt_arg(cmd,1); - cmd->c_flags |= CF_COND; - } - return cmd; -} + /* The variables used to return semantic value and location from the + action routines. */ + YYSTYPE yyval; -void -opt_arg(cmd,fliporflop) -register CMD *cmd; -int fliporflop; -{ - register ARG *arg; - int opt = CFT_EVAL; - int sure = 0; - ARG *arg2; - char *tmps; /* for True macro */ - int context = 0; /* 0 = normal, 1 = before &&, 2 = before || */ - int flp = fliporflop; - - if (!cmd) - return; - arg = cmd->c_expr; - - /* Turn "if (!expr)" into "unless (expr)" */ - - while (arg->arg_type == O_NOT && arg[1].arg_type == A_EXPR) { - cmd->c_flags ^= CF_INVERT; /* flip sense of cmd */ - cmd->c_expr = arg[1].arg_ptr.arg_arg; /* hoist the rest of expr */ - free_arg(arg); - arg = cmd->c_expr; /* here we go again */ - } - if (!arg->arg_len) { /* sanity check */ - cmd->c_flags |= opt; - return; - } + /* When reducing, the number of symbols on the RHS of the reduced + rule. */ + int yylen; - /* for "cond .. cond" we set up for the initial check */ + YYDPRINTF ((Perl_debug_log, "Starting parse\n")); - if (arg->arg_type == O_FLIP) - context |= 4; + ENTER; /* force stack free before we return */ + SAVEVPTR(PL_yycharp); + SAVEVPTR(PL_yylvalp); + PL_yycharp = &yychar; /* so PL_yyerror() can access it */ + PL_yylvalp = &yylval; /* so various functions in toke.c can access it */ - /* for "cond && expr" and "cond || expr" we can ignore expr, sort of */ + yyss_sv = NEWSV(73, YYINITDEPTH * sizeof(short)); + yyvs_sv = NEWSV(73, YYINITDEPTH * sizeof(YYSTYPE)); + SAVEFREESV(yyss_sv); + SAVEFREESV(yyvs_sv); + yyss = (short *) SvPVX(yyss_sv); + yyvs = (YYSTYPE *) SvPVX(yyvs_sv); + /* note that elements zero of yyvs and yyns are not used */ + yyssp = yyss; + yyvsp = yyvs; +#ifdef DEBUGGING + yyns_sv = NEWSV(73, YYINITDEPTH * sizeof(char *)); + SAVEFREESV(yyns_sv); + yyns = (const char **) SvPVX(yyns_sv); + yynsp = yyns; +#endif - if (arg->arg_type == O_AND) - context |= 1; - else if (arg->arg_type == O_OR) - context |= 2; - if (context && arg[flp].arg_type == A_EXPR) { - arg = arg[flp].arg_ptr.arg_arg; - flp = 1; - } + yystate = 0; + yyerrstatus = 0; + yynerrs = 0; + yychar = YYEMPTY; /* Cause a token to be read. */ - if (arg[flp].arg_flags & (AF_PRE|AF_POST)) { - cmd->c_flags |= opt; - return; /* side effect, can't optimize */ - } - if (arg->arg_type == O_ITEM || arg->arg_type == O_FLIP || - arg->arg_type == O_AND || arg->arg_type == O_OR) { - if (arg[flp].arg_type == A_SINGLE) { - opt = (str_true(arg[flp].arg_ptr.arg_str) ? CFT_TRUE : CFT_FALSE); - cmd->c_first = arg[flp].arg_ptr.arg_str; - goto literal; - } - else if (arg[flp].arg_type == A_STAB || arg[flp].arg_type == A_LVAL) { - cmd->c_stab = arg[flp].arg_ptr.arg_stab; - opt = CFT_REG; - literal: - if (!context) { /* no && or ||? */ - free_arg(arg); - cmd->c_expr = Nullarg; - } - if (!(context & 1)) - cmd->c_flags |= CF_EQSURE; - if (!(context & 2)) - cmd->c_flags |= CF_NESURE; - } - } - else if (arg->arg_type == O_MATCH || arg->arg_type == O_SUBST || - arg->arg_type == O_NMATCH || arg->arg_type == O_NSUBST) { - if ((arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) && - arg[2].arg_type == A_SPAT && - arg[2].arg_ptr.arg_spat->spat_first ) { - cmd->c_stab = arg[1].arg_ptr.arg_stab; - cmd->c_first = arg[2].arg_ptr.arg_spat->spat_first; - cmd->c_flen = arg[2].arg_ptr.arg_spat->spat_flen; - if (arg[2].arg_ptr.arg_spat->spat_flags & SPAT_SCANALL && - (arg->arg_type == O_MATCH || arg->arg_type == O_NMATCH) ) - sure |= CF_EQSURE; /* (SUBST must be forced even */ - /* if we know it will work.) */ - arg[2].arg_ptr.arg_spat->spat_first = Nullstr; - arg[2].arg_ptr.arg_spat->spat_flen = 0; /* only one chk */ - sure |= CF_NESURE; /* normally only sure if it fails */ - if (arg->arg_type == O_NMATCH || arg->arg_type == O_NSUBST) - cmd->c_flags |= CF_FIRSTNEG; - if (context & 1) { /* only sure if thing is false */ - if (cmd->c_flags & CF_FIRSTNEG) - sure &= ~CF_NESURE; - else - sure &= ~CF_EQSURE; - } - else if (context & 2) { /* only sure if thing is true */ - if (cmd->c_flags & CF_FIRSTNEG) - sure &= ~CF_EQSURE; - else - sure &= ~CF_NESURE; - } - if (sure & (CF_EQSURE|CF_NESURE)) { /* if we know anything*/ - if (arg[2].arg_ptr.arg_spat->spat_flags & SPAT_SCANFIRST) - opt = CFT_SCAN; - else - opt = CFT_ANCHOR; - if (sure == (CF_EQSURE|CF_NESURE) /* really sure? */ - && arg->arg_type == O_MATCH - && context & 4 - && fliporflop == 1) { - arg[2].arg_type = A_SINGLE; /* don't do twice */ - arg[2].arg_ptr.arg_str = &str_yes; - } - cmd->c_flags |= sure; - } - } - } - else if (arg->arg_type == O_SEQ || arg->arg_type == O_SNE || - arg->arg_type == O_SLT || arg->arg_type == O_SGT) { - if (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) { - if (arg[2].arg_type == A_SINGLE) { - cmd->c_stab = arg[1].arg_ptr.arg_stab; - cmd->c_first = arg[2].arg_ptr.arg_str; - cmd->c_flen = 30000; - switch (arg->arg_type) { - case O_SLT: case O_SGT: - sure |= CF_EQSURE; - cmd->c_flags |= CF_FIRSTNEG; - break; - case O_SNE: - cmd->c_flags |= CF_FIRSTNEG; - /* FALL THROUGH */ - case O_SEQ: - sure |= CF_NESURE|CF_EQSURE; - break; - } - if (context & 1) { /* only sure if thing is false */ - if (cmd->c_flags & CF_FIRSTNEG) - sure &= ~CF_NESURE; - else - sure &= ~CF_EQSURE; - } - else if (context & 2) { /* only sure if thing is true */ - if (cmd->c_flags & CF_FIRSTNEG) - sure &= ~CF_EQSURE; - else - sure &= ~CF_NESURE; - } - if (sure & (CF_EQSURE|CF_NESURE)) { - opt = CFT_STROP; - cmd->c_flags |= sure; - } - } - } - } - else if (arg->arg_type == O_ASSIGN && - (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) && - arg[1].arg_ptr.arg_stab == defstab && - arg[2].arg_type == A_EXPR ) { - arg2 = arg[2].arg_ptr.arg_arg; - if (arg2->arg_type == O_ITEM && arg2[1].arg_type == A_READ) { - opt = CFT_GETS; - cmd->c_stab = arg2[1].arg_ptr.arg_stab; - if (!(arg2[1].arg_ptr.arg_stab->stab_io->flags & IOF_ARGV)) { - free_arg(arg2); - free_arg(arg); - cmd->c_expr = Nullarg; - } - } - } - else if (arg->arg_type == O_CHOP && - (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) ) { - opt = CFT_CHOP; - cmd->c_stab = arg[1].arg_ptr.arg_stab; - free_arg(arg); - cmd->c_expr = Nullarg; - } - if (context & 4) - opt |= CF_FLIP; - cmd->c_flags |= opt; - - if (cmd->c_flags & CF_FLIP) { - if (fliporflop == 1) { - arg = cmd->c_expr; /* get back to O_FLIP arg */ - arg[3].arg_ptr.arg_cmd = (CMD*)safemalloc(sizeof(CMD)); - bcopy((char *)cmd, (char *)arg[3].arg_ptr.arg_cmd, sizeof(CMD)); - arg[4].arg_ptr.arg_cmd = (CMD*)safemalloc(sizeof(CMD)); - bcopy((char *)cmd, (char *)arg[4].arg_ptr.arg_cmd, sizeof(CMD)); - opt_arg(arg[4].arg_ptr.arg_cmd,2); - arg->arg_len = 2; /* this is a lie */ - } - else { - if ((opt & CF_OPTIMIZE) == CFT_EVAL) - cmd->c_flags = (cmd->c_flags & ~CF_OPTIMIZE) | CFT_UNFLIP; - } - } -} -ARG * -mod_match(type,left,pat) -register ARG *left; -register ARG *pat; -{ + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); - register SPAT *spat; - register ARG *newarg; - - if ((pat->arg_type == O_MATCH || - pat->arg_type == O_SUBST || - pat->arg_type == O_TRANS || - pat->arg_type == O_SPLIT - ) && - pat[1].arg_ptr.arg_stab == defstab ) { - switch (pat->arg_type) { - case O_MATCH: - newarg = make_op(type == O_MATCH ? O_MATCH : O_NMATCH, - pat->arg_len, - left,Nullarg,Nullarg,0); - break; - case O_SUBST: - newarg = l(make_op(type == O_MATCH ? O_SUBST : O_NSUBST, - pat->arg_len, - left,Nullarg,Nullarg,0)); - break; - case O_TRANS: - newarg = l(make_op(type == O_MATCH ? O_TRANS : O_NTRANS, - pat->arg_len, - left,Nullarg,Nullarg,0)); - break; - case O_SPLIT: - newarg = make_op(type == O_MATCH ? O_SPLIT : O_SPLIT, - pat->arg_len, - left,Nullarg,Nullarg,0); - break; - } - if (pat->arg_len >= 2) { - newarg[2].arg_type = pat[2].arg_type; - newarg[2].arg_ptr = pat[2].arg_ptr; - newarg[2].arg_flags = pat[2].arg_flags; - if (pat->arg_len >= 3) { - newarg[3].arg_type = pat[3].arg_type; - newarg[3].arg_ptr = pat[3].arg_ptr; - newarg[3].arg_flags = pat[3].arg_flags; - } - } - safefree((char*)pat); - } - else { - spat = (SPAT *) safemalloc(sizeof (SPAT)); - bzero((char *)spat, sizeof(SPAT)); - spat->spat_next = spat_root; /* link into spat list */ - spat_root = spat; - init_compex(&spat->spat_compex); - - spat->spat_runtime = pat; - newarg = make_op(type,2,left,Nullarg,Nullarg,0); - newarg[2].arg_type = A_SPAT; - newarg[2].arg_ptr.arg_spat = spat; - newarg[2].arg_flags = AF_SPECIAL; - } + goto yysetstate; - return newarg; -} +/*------------------------------------------------------------. +| yynewstate -- Push a new state, which is found in yystate. | +`------------------------------------------------------------*/ + yynewstate: + /* In all cases, when you get here, the value and location stacks + have just been pushed. so pushing a state here evens the stacks. + */ + yyssp++; -CMD * -add_label(lbl,cmd) -char *lbl; -register CMD *cmd; -{ - if (cmd) - cmd->c_label = lbl; - return cmd; -} + yysetstate: + *yyssp = yystate; -CMD * -addcond(cmd, arg) -register CMD *cmd; -register ARG *arg; -{ - cmd->c_expr = arg; - opt_arg(cmd,1); - cmd->c_flags |= CF_COND; - return cmd; -} + if (yyss + yystacksize - 1 <= yyssp) { + /* Get the current used size of the three stacks, in elements. */ + const YYSIZE_T yysize = yyssp - yyss + 1; -CMD * -addloop(cmd, arg) -register CMD *cmd; -register ARG *arg; -{ - cmd->c_expr = arg; - opt_arg(cmd,1); - cmd->c_flags |= CF_COND|CF_LOOP; - if (cmd->c_type == C_BLOCK) - cmd->c_flags &= ~CF_COND; - else { - arg = cmd->ucmd.acmd.ac_expr; - if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_CMD) - cmd->c_flags &= ~CF_COND; /* "do {} while" happens at least once */ - if (arg && arg->arg_type == O_SUBR) - cmd->c_flags &= ~CF_COND; /* likewise for "do subr() while" */ - } - return cmd; -} + /* Extend the stack our own way. */ + if (YYMAXDEPTH <= yystacksize) + goto yyoverflowlab; + yystacksize *= 2; + if (YYMAXDEPTH < yystacksize) + yystacksize = YYMAXDEPTH; -CMD * -invert(cmd) -register CMD *cmd; -{ - cmd->c_flags ^= CF_INVERT; - return cmd; -} + SvGROW(yyss_sv, yystacksize * sizeof(short)); + SvGROW(yyvs_sv, yystacksize * sizeof(YYSTYPE)); + yyss = (short *) SvPVX(yyss_sv); + yyvs = (YYSTYPE *) SvPVX(yyvs_sv); +#ifdef DEBUGGING + SvGROW(yyns_sv, yystacksize * sizeof(char *)); + yyns = (const char **) SvPVX(yyns_sv); + if (! yyns) + goto yyoverflowlab; + yynsp = yyns + yysize - 1; +#endif + if (!yyss || ! yyvs) + goto yyoverflowlab; -yyerror(s) -char *s; -{ - char tmpbuf[128]; - char *tname = tmpbuf; - - if (yychar > 256) { - tname = tokename[yychar-256]; - if (strEQ(tname,"word")) - strcpy(tname,tokenbuf); - else if (strEQ(tname,"register")) - sprintf(tname,"$%s",tokenbuf); - else if (strEQ(tname,"array_length")) - sprintf(tname,"$#%s",tokenbuf); + yyssp = yyss + yysize - 1; + yyvsp = yyvs + yysize - 1; + + + YYDPRINTF ((Perl_debug_log, "Stack size increased to %lu\n", + (unsigned long int) yystacksize)); + + if (yyss + yystacksize - 1 <= yyssp) + YYABORT; } - else if (!yychar) - strcpy(tname,"EOF"); - else if (yychar < 32) - sprintf(tname,"^%c",yychar+64); - else if (yychar == 127) - strcpy(tname,"^?"); - else - sprintf(tname,"%c",yychar); - printf("%s in file %s at line %d, next token \"%s\"\n", - s,filename,line,tname); -} -char * -scanstr(s) -register char *s; -{ - register char term; - register char *d; - register ARG *arg; - register bool makesingle = FALSE; - char *leave = "\\$nrtfb0123456789"; /* which backslash sequences to keep */ - - arg = op_new(1); - yylval.arg = arg; - arg->arg_type = O_ITEM; - - switch (*s) { - default: /* a substitution replacement */ - arg[1].arg_type = A_DOUBLE; - makesingle = TRUE; /* maybe disable runtime scanning */ - term = *s; - if (term == '\'') - leave = Nullch; - goto snarf_it; - case '0': - { - long i; - int shift; - - arg[1].arg_type = A_SINGLE; - if (s[1] == 'x') { - shift = 4; - s += 2; - } - else if (s[1] == '.') - goto decimal; - else - shift = 3; - i = 0; - for (;;) { - switch (*s) { - default: - goto out; - case '8': case '9': - if (shift != 4) - fatal("Illegal octal digit at line %d",line); - /* FALL THROUGH */ - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': - i <<= shift; - i += *s++ & 15; - break; - case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': - case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': - if (shift != 4) - goto out; - i <<= 4; - i += (*s++ & 7) + 9; - break; - } - } - out: - sprintf(tokenbuf,"%d",i); - arg[1].arg_ptr.arg_str = str_make(tokenbuf); - } - break; - case '1': case '2': case '3': case '4': case '5': - case '6': case '7': case '8': case '9': case '.': - decimal: - arg[1].arg_type = A_SINGLE; - d = tokenbuf; - while (isdigit(*s) || *s == '_') - *d++ = *s++; - if (*s == '.' && index("0123456789eE",s[1])) - *d++ = *s++; - while (isdigit(*s) || *s == '_') - *d++ = *s++; - if (index("eE",*s) && index("+-0123456789",s[1])) - *d++ = *s++; - if (*s == '+' || *s == '-') - *d++ = *s++; - while (isdigit(*s)) - *d++ = *s++; - *d = '\0'; - arg[1].arg_ptr.arg_str = str_make(tokenbuf); - break; - case '\'': - arg[1].arg_type = A_SINGLE; - term = *s; - leave = Nullch; - goto snarf_it; - - case '<': - arg[1].arg_type = A_READ; - s = cpytill(tokenbuf,s+1,'>'); - if (!*tokenbuf) - strcpy(tokenbuf,"ARGV"); - if (*s) - s++; - if (rsfp == stdin && strEQ(tokenbuf,"stdin")) - fatal("Can't get both program and data from \n"); - arg[1].arg_ptr.arg_stab = stabent(tokenbuf,TRUE); - arg[1].arg_ptr.arg_stab->stab_io = stio_new(); - if (strEQ(tokenbuf,"ARGV")) { - aadd(arg[1].arg_ptr.arg_stab); - arg[1].arg_ptr.arg_stab->stab_io->flags |= IOF_ARGV|IOF_START; - } - break; - case '"': - arg[1].arg_type = A_DOUBLE; - makesingle = TRUE; /* maybe disable runtime scanning */ - term = *s; - goto snarf_it; - case '`': - arg[1].arg_type = A_BACKTICK; - term = *s; - snarf_it: - { - STR *tmpstr; - int sqstart = line; - char *tmps; - - tmpstr = str_new(strlen(s)); - s = str_append_till(tmpstr,s+1,term,leave); - while (!*s) { /* multiple line string? */ - s = str_gets(linestr, rsfp); - if (!*s) - fatal("EOF in string at line %d\n",sqstart); - line++; - s = str_append_till(tmpstr,s,term,leave); - } - s++; - if (term == '\'') { - arg[1].arg_ptr.arg_str = tmpstr; - break; - } - tmps = s; - s = d = tmpstr->str_ptr; /* assuming shrinkage only */ - while (*s) { - if (*s == '$' && s[1]) { - makesingle = FALSE; /* force interpretation */ - if (!isalpha(s[1])) { /* an internal register? */ - int len; - - len = scanreg(s,tokenbuf) - s; - stabent(tokenbuf,TRUE); /* make sure it's created */ - while (len--) - *d++ = *s++; - continue; - } - } - else if (*s == '\\' && s[1]) { - s++; - switch (*s) { - default: - defchar: - if (!leave || index(leave,*s)) - *d++ = '\\'; - *d++ = *s++; - continue; - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - *d = *s++ - '0'; - if (index("01234567",*s)) { - *d <<= 3; - *d += *s++ - '0'; - } - else if (!index('`"',term)) { /* oops, a subpattern */ - s--; - goto defchar; - } - if (index("01234567",*s)) { - *d <<= 3; - *d += *s++ - '0'; - } - d++; - continue; - case 'b': - *d++ = '\b'; - break; - case 'n': - *d++ = '\n'; - break; - case 'r': - *d++ = '\r'; - break; - case 'f': - *d++ = '\f'; - break; - case 't': - *d++ = '\t'; - break; - } - s++; - continue; - } - *d++ = *s++; - } - *d = '\0'; - if (arg[1].arg_type == A_DOUBLE) { - if (makesingle) - arg[1].arg_type = A_SINGLE; /* now we can optimize on it */ - else - leave = "\\"; - for (d = s = tmpstr->str_ptr; *s; *d++ = *s++) { - if (*s == '\\' && (!leave || index(leave,s[1]))) - s++; - } - *d = '\0'; - } - tmpstr->str_cur = d - tmpstr->str_ptr; /* XXX cheat */ - arg[1].arg_ptr.arg_str = tmpstr; - s = tmps; - break; + goto yybackup; + + /*-----------. + | yybackup. | + `-----------*/ + yybackup: + +/* Do appropriate processing given the current state. */ +/* Read a lookahead token if we need one and don't already have one. */ +/* yyresume: */ + + /* First try to decide what to do without reference to lookahead token. */ + + yyn = yypact[yystate]; + if (yyn == YYPACT_NINF) + goto yydefault; + + /* Not known => get a lookahead token if don't already have one. */ + + /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */ + if (yychar == YYEMPTY) { + YYDPRINTF ((Perl_debug_log, "Reading a token: ")); + yychar = yylex(); +# ifdef EBCDIC + if (yychar >= 0 && yychar < 255) { + yychar = NATIVE_TO_ASCII(yychar); } +# endif } - return s; -} -ARG * -make_op(type,newlen,arg1,arg2,arg3,dolist) -int type; -int newlen; -ARG *arg1; -ARG *arg2; -ARG *arg3; -int dolist; -{ - register ARG *arg; - register ARG *chld; - register int doarg; - - arg = op_new(newlen); - arg->arg_type = type; - doarg = opargs[type]; - if (chld = arg1) { - if (!(doarg & 1)) - arg[1].arg_flags |= AF_SPECIAL; - if (doarg & 16) - arg[1].arg_flags |= AF_NUMERIC; - if (chld->arg_type == O_ITEM && - (hoistable[chld[1].arg_type] || chld[1].arg_type == A_LVAL) ) { - arg[1].arg_type = chld[1].arg_type; - arg[1].arg_ptr = chld[1].arg_ptr; - arg[1].arg_flags |= chld[1].arg_flags; - free_arg(chld); - } - else { - arg[1].arg_type = A_EXPR; - arg[1].arg_ptr.arg_arg = chld; - if (dolist & 1) { - if (chld->arg_type == O_LIST) { - if (newlen == 1) { /* we can hoist entire list */ - chld->arg_type = type; - free_arg(arg); - arg = chld; - } - else { - arg[1].arg_flags |= AF_SPECIAL; - } - } - else if (chld->arg_type == O_ARRAY && chld->arg_len == 1) - arg[1].arg_flags |= AF_SPECIAL; - } - } + if (yychar <= YYEOF) { + yychar = yytoken = YYEOF; + YYDPRINTF ((Perl_debug_log, "Now at end of input.\n")); } - if (chld = arg2) { - if (!(doarg & 2)) - arg[2].arg_flags |= AF_SPECIAL; - if (doarg & 32) - arg[2].arg_flags |= AF_NUMERIC; - if (chld->arg_type == O_ITEM && - (hoistable[chld[1].arg_type] || - (type == O_ASSIGN && - (chld[1].arg_type == A_READ || - chld[1].arg_type == A_DOUBLE || - chld[1].arg_type == A_BACKTICK ) ) ) ) { - arg[2].arg_type = chld[1].arg_type; - arg[2].arg_ptr = chld[1].arg_ptr; - free_arg(chld); - } - else { - arg[2].arg_type = A_EXPR; - arg[2].arg_ptr.arg_arg = chld; - if ((dolist & 2) && - (chld->arg_type == O_LIST || - (chld->arg_type == O_ARRAY && chld->arg_len == 1) )) - arg[2].arg_flags |= AF_SPECIAL; - } + else { + yytoken = YYTRANSLATE (yychar); + YYDSYMPRINTF ("Next token is", yytoken, &yylval); } - if (chld = arg3) { - if (!(doarg & 4)) - arg[3].arg_flags |= AF_SPECIAL; - if (doarg & 64) - arg[3].arg_flags |= AF_NUMERIC; - if (chld->arg_type == O_ITEM && hoistable[chld[1].arg_type]) { - arg[3].arg_type = chld[1].arg_type; - arg[3].arg_ptr = chld[1].arg_ptr; - free_arg(chld); - } - else { - arg[3].arg_type = A_EXPR; - arg[3].arg_ptr.arg_arg = chld; - if ((dolist & 4) && - (chld->arg_type == O_LIST || - (chld->arg_type == O_ARRAY && chld->arg_len == 1) )) - arg[3].arg_flags |= AF_SPECIAL; - } + + /* If the proper action on seeing token YYTOKEN is to reduce or to + detect an error, take that action. */ + yyn += yytoken; + if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) + goto yydefault; + yyn = yytable[yyn]; + if (yyn <= 0) { + if (yyn == 0 || yyn == YYTABLE_NINF) + goto yyerrlab; + yyn = -yyn; + goto yyreduce; } + + if (yyn == YYFINAL) + YYACCEPT; + + /* Shift the lookahead token. */ + YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken])); + + /* Discard the token being shifted unless it is eof. */ + if (yychar != YYEOF) + yychar = YYEMPTY; + + *++yyvsp = yylval; #ifdef DEBUGGING - if (debug & 16) { - fprintf(stderr,"%lx <= make_op(%s",arg,opname[arg->arg_type]); - if (arg1) - fprintf(stderr,",%s=%lx", - argname[arg[1].arg_type],arg[1].arg_ptr.arg_arg); - if (arg2) - fprintf(stderr,",%s=%lx", - argname[arg[2].arg_type],arg[2].arg_ptr.arg_arg); - if (arg3) - fprintf(stderr,",%s=%lx", - argname[arg[3].arg_type],arg[3].arg_ptr.arg_arg); - fprintf(stderr,")\n"); - } + *++yynsp = (const char *)(yytname[yytoken]); #endif - evalstatic(arg); /* see if we can consolidate anything */ - return arg; -} -/* turn 123 into 123 == $. */ -ARG * -flipflip(arg) -register ARG *arg; -{ - if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_SINGLE) { - arg = (ARG*)saferealloc((char*)arg,3*sizeof(ARG)); - arg->arg_type = O_EQ; - arg->arg_len = 2; - arg[2].arg_type = A_STAB; - arg[2].arg_flags = 0; - arg[2].arg_ptr.arg_stab = stabent(".",TRUE); - } - return arg; -} + /* Count tokens shifted since error; after three, turn off error + status. */ + if (yyerrstatus) + yyerrstatus--; -void -evalstatic(arg) -register ARG *arg; -{ - register STR *str; - register STR *s1; - register STR *s2; - double value; /* must not be register */ - register char *tmps; - int i; - double exp(), log(), sqrt(), modf(); - char *crypt(); - - if (!arg || !arg->arg_len) - return; - - if (arg[1].arg_type == A_SINGLE && - (arg->arg_len == 1 || arg[2].arg_type == A_SINGLE) ) { - str = str_new(0); - s1 = arg[1].arg_ptr.arg_str; - if (arg->arg_len > 1) - s2 = arg[2].arg_ptr.arg_str; - else - s2 = Nullstr; - switch (arg->arg_type) { - default: - str_free(str); - str = Nullstr; /* can't be evaluated yet */ - break; - case O_CONCAT: - str_sset(str,s1); - str_scat(str,s2); - break; - case O_REPEAT: - i = (int)str_gnum(s2); - while (i--) - str_scat(str,s1); - break; - case O_MULTIPLY: - value = str_gnum(s1); - str_numset(str,value * str_gnum(s2)); - break; - case O_DIVIDE: - value = str_gnum(s1); - str_numset(str,value / str_gnum(s2)); - break; - case O_MODULO: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) % ((long)str_gnum(s2)))); - break; - case O_ADD: - value = str_gnum(s1); - str_numset(str,value + str_gnum(s2)); - break; - case O_SUBTRACT: - value = str_gnum(s1); - str_numset(str,value - str_gnum(s2)); - break; - case O_LEFT_SHIFT: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) << ((long)str_gnum(s2)))); - break; - case O_RIGHT_SHIFT: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) >> ((long)str_gnum(s2)))); - break; - case O_LT: - value = str_gnum(s1); - str_numset(str,(double)(value < str_gnum(s2))); - break; - case O_GT: - value = str_gnum(s1); - str_numset(str,(double)(value > str_gnum(s2))); - break; - case O_LE: - value = str_gnum(s1); - str_numset(str,(double)(value <= str_gnum(s2))); - break; - case O_GE: - value = str_gnum(s1); - str_numset(str,(double)(value >= str_gnum(s2))); - break; - case O_EQ: - value = str_gnum(s1); - str_numset(str,(double)(value == str_gnum(s2))); - break; - case O_NE: - value = str_gnum(s1); - str_numset(str,(double)(value != str_gnum(s2))); - break; - case O_BIT_AND: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) & ((long)str_gnum(s2)))); - break; - case O_XOR: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) ^ ((long)str_gnum(s2)))); - break; - case O_BIT_OR: - value = str_gnum(s1); - str_numset(str,(double)(((long)value) | ((long)str_gnum(s2)))); - break; - case O_AND: - if (str_true(s1)) - str = str_make(str_get(s2)); - else - str = str_make(str_get(s1)); - break; - case O_OR: - if (str_true(s1)) - str = str_make(str_get(s1)); - else - str = str_make(str_get(s2)); - break; - case O_COND_EXPR: - if (arg[3].arg_type != A_SINGLE) { - str_free(str); - str = Nullstr; - } - else { - str = str_make(str_get(str_true(s1) ? s2 : arg[3].arg_ptr.arg_str)); - str_free(arg[3].arg_ptr.arg_str); - } - break; - case O_NEGATE: - str_numset(str,(double)(-str_gnum(s1))); - break; - case O_NOT: - str_numset(str,(double)(!str_true(s1))); - break; - case O_COMPLEMENT: - str_numset(str,(double)(~(long)str_gnum(s1))); - break; - case O_LENGTH: - str_numset(str, (double)str_len(s1)); - break; - case O_SUBSTR: - if (arg[3].arg_type != A_SINGLE || stabent("[",FALSE)) { - str_free(str); /* making the fallacious assumption */ - str = Nullstr; /* that any $[ occurs before substr()*/ - } - else { - char *beg; - int len = (int)str_gnum(s2); - int tmp; - - for (beg = str_get(s1); *beg && len > 0; beg++,len--) ; - len = (int)str_gnum(arg[3].arg_ptr.arg_str); - str_free(arg[3].arg_ptr.arg_str); - if (len > (tmp = strlen(beg))) - len = tmp; - str_nset(str,beg,len); - } - break; - case O_SLT: - tmps = str_get(s1); - str_numset(str,(double)(strLT(tmps,str_get(s2)))); - break; - case O_SGT: - tmps = str_get(s1); - str_numset(str,(double)(strGT(tmps,str_get(s2)))); - break; - case O_SLE: - tmps = str_get(s1); - str_numset(str,(double)(strLE(tmps,str_get(s2)))); - break; - case O_SGE: - tmps = str_get(s1); - str_numset(str,(double)(strGE(tmps,str_get(s2)))); - break; - case O_SEQ: - tmps = str_get(s1); - str_numset(str,(double)(strEQ(tmps,str_get(s2)))); - break; - case O_SNE: - tmps = str_get(s1); - str_numset(str,(double)(strNE(tmps,str_get(s2)))); - break; - case O_CRYPT: - tmps = str_get(s1); - str_set(str,crypt(tmps,str_get(s2))); - break; - case O_EXP: - str_numset(str,exp(str_gnum(s1))); - break; - case O_LOG: - str_numset(str,log(str_gnum(s1))); - break; - case O_SQRT: - str_numset(str,sqrt(str_gnum(s1))); - break; - case O_INT: - modf(str_gnum(s1),&value); - str_numset(str,value); - break; - case O_ORD: - str_numset(str,(double)(*str_get(s1))); - break; - } - if (str) { - arg->arg_type = O_ITEM; /* note arg1 type is already SINGLE */ - str_free(s1); - str_free(s2); - arg[1].arg_ptr.arg_str = str; - } - } -} + yystate = yyn; + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); -ARG * -l(arg) -register ARG *arg; -{ - register int i; - register ARG *arg1; + goto yynewstate; - arg->arg_flags |= AF_COMMON; /* XXX should cross-match */ - /* see if it's an array reference */ + /*-----------------------------------------------------------. + | yydefault -- do the default action for the current state. | + `-----------------------------------------------------------*/ + yydefault: + yyn = yydefact[yystate]; + if (yyn == 0) + goto yyerrlab; + goto yyreduce; - if (arg[1].arg_type == A_EXPR) { - arg1 = arg[1].arg_ptr.arg_arg; - if (arg1->arg_type == O_LIST && arg->arg_type != O_ITEM) { - /* assign to list */ - arg[1].arg_flags |= AF_SPECIAL; - arg[2].arg_flags |= AF_SPECIAL; - for (i = arg1->arg_len; i >= 1; i--) { - switch (arg1[i].arg_type) { - case A_STAB: case A_LVAL: - arg1[i].arg_type = A_LVAL; - break; - case A_EXPR: case A_LEXPR: - arg1[i].arg_type = A_LEXPR; - if (arg1[i].arg_ptr.arg_arg->arg_type == O_ARRAY) - arg1[i].arg_ptr.arg_arg->arg_type = O_LARRAY; - else if (arg1[i].arg_ptr.arg_arg->arg_type == O_HASH) - arg1[i].arg_ptr.arg_arg->arg_type = O_LHASH; - if (arg1[i].arg_ptr.arg_arg->arg_type == O_LARRAY) - break; - if (arg1[i].arg_ptr.arg_arg->arg_type == O_LHASH) - break; - /* FALL THROUGH */ - default: - sprintf(tokenbuf, - "Illegal item (%s) as lvalue",argname[arg1[i].arg_type]); - yyerror(tokenbuf); - } - } - } - else if (arg1->arg_type == O_ARRAY) { - if (arg1->arg_len == 1 && arg->arg_type != O_ITEM) { - /* assign to array */ - arg[1].arg_flags |= AF_SPECIAL; - arg[2].arg_flags |= AF_SPECIAL; - } - else - arg1->arg_type = O_LARRAY; /* assign to array elem */ - } - else if (arg1->arg_type == O_HASH) - arg1->arg_type = O_LHASH; - else { - sprintf(tokenbuf, - "Illegal expression (%s) as lvalue",opname[arg1->arg_type]); - yyerror(tokenbuf); - } - arg[1].arg_type = A_LEXPR; + /*-----------------------------. + | yyreduce -- Do a reduction. | + `-----------------------------*/ + yyreduce: + /* yyn is the number of a rule to reduce with. */ + yylen = yyr2[yyn]; + + /* If YYLEN is nonzero, implement the default value of the action: + "$$ = $1". + + Otherwise, the following line sets YYVAL to garbage. + This behavior is undocumented and Bison + users should not rely upon it. Assigning to YYVAL + unconditionally makes the parser a bit smaller, and it avoids a + GCC warning that YYVAL may be used uninitialized. */ + yyval = yyvsp[1-yylen]; + + + YY_REDUCE_PRINT (yyn); + switch (yyn) { + +/* contains all the rule actions; auto-generated from perly.y */ + +#define dep() deprecate("\"do\" to call subroutines") +#include "perly.act" + + } + + yyvsp -= yylen; + yyssp -= yylen; #ifdef DEBUGGING - if (debug & 16) - fprintf(stderr,"lval LEXPR\n"); + yynsp -= yylen; #endif - return arg; - } - /* not an array reference, should be a register name */ - if (arg[1].arg_type != A_STAB && arg[1].arg_type != A_LVAL) { - sprintf(tokenbuf, - "Illegal item (%s) as lvalue",argname[arg[1].arg_type]); - yyerror(tokenbuf); - } - arg[1].arg_type = A_LVAL; + *++yyvsp = yyval; #ifdef DEBUGGING - if (debug & 16) - fprintf(stderr,"lval LVAL\n"); + *++yynsp = (const char *)(yytname [yyr1[yyn]]); #endif - return arg; -} -ARG * -addflags(i,flags,arg) -register ARG *arg; -{ - arg[i].arg_flags |= flags; - return arg; -} + /* Now shift the result of the reduction. Determine what state + that goes to, based on the state we popped back to and the rule + number reduced by. */ -ARG * -hide_ary(arg) -ARG *arg; -{ - if (arg->arg_type == O_ARRAY) - return make_op(O_ITEM,1,arg,Nullarg,Nullarg,0); - return arg; -} + yyn = yyr1[yyn]; -ARG * -make_list(arg) -register ARG *arg; -{ - register int i; - register ARG *node; - register ARG *nxtnode; - register int j; - STR *tmpstr; - - if (!arg) { - arg = op_new(0); - arg->arg_type = O_LIST; - } - if (arg->arg_type != O_COMMA) { - arg->arg_flags |= AF_LISTISH; /* see listish() below */ - return arg; - } - for (i = 2, node = arg; ; i++) { - if (node->arg_len < 2) - break; - if (node[2].arg_type != A_EXPR) - break; - node = node[2].arg_ptr.arg_arg; - if (node->arg_type != O_COMMA) - break; - } - if (i > 2) { - node = arg; - arg = op_new(i); - tmpstr = arg->arg_ptr.arg_str; - *arg = *node; /* copy everything except the STR */ - arg->arg_ptr.arg_str = tmpstr; - for (j = 1; ; ) { - arg[j++] = node[1]; - if (j >= i) { - arg[j] = node[2]; - free_arg(node); - break; + yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; + if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) + yystate = yytable[yystate]; + else + yystate = yydefgoto[yyn - YYNTOKENS]; + + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); + +#ifdef DEBUGGING + /* tmp push yystate for stack print; this is normally pushed later in + * yynewstate */ + yyssp++; + *yyssp = yystate; + YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); + yyssp--; +#endif + + goto yynewstate; + + + /*------------------------------------. + | yyerrlab -- here on detecting error | + `------------------------------------*/ + yyerrlab: + /* If not already recovering from an error, report this error. */ + if (!yyerrstatus) { + ++yynerrs; +#if YYERROR_VERBOSE + yyn = yypact[yystate]; + + if (YYPACT_NINF < yyn && yyn < YYLAST) { + YYSIZE_T yysize = 0; + const int yytype = YYTRANSLATE (yychar); + char *yymsg; + int yyx, yycount; + + yycount = 0; + /* Start YYX at -YYN if negative to avoid negative indexes in + YYCHECK. */ + for (yyx = yyn < 0 ? -yyn : 0; + yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++) + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) + yysize += yystrlen (yytname[yyx]) + 15, yycount++; + yysize += yystrlen ("syntax error, unexpected ") + 1; + yysize += yystrlen (yytname[yytype]); + New(yymsg, yysize, char *); + if (yymsg != 0) { + const char *yyp = yystpcpy (yymsg, "syntax error, unexpected "); + yyp = yystpcpy (yyp, yytname[yytype]); + + if (yycount < 5) { + yycount = 0; + for (yyx = yyn < 0 ? -yyn : 0; + yyx < (int) (sizeof (yytname) / sizeof (char *)); + yyx++) + { + if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { + const char *yyq = ! yycount ? + ", expecting " : " or "; + yyp = yystpcpy (yyp, yyq); + yyp = yystpcpy (yyp, yytname[yyx]); + yycount++; + } + } + } + yyerror (yymsg); + YYSTACK_FREE (yymsg); } - nxtnode = node[2].arg_ptr.arg_arg; - free_arg(node); - node = nxtnode; + else + yyerror ("syntax error; also virtual memory exhausted"); } + else +#endif /* YYERROR_VERBOSE */ + yyerror ("syntax error"); } - arg->arg_type = O_LIST; - arg->arg_len = i; - return arg; -} -/* turn a single item into a list */ -ARG * -listish(arg) -ARG *arg; -{ - if (arg->arg_flags & AF_LISTISH) - arg = make_op(O_LIST,1,arg,Nullarg,Nullarg,0); - return arg; -} + if (yyerrstatus == 3) { + /* If just tried and failed to reuse lookahead token after an + error, discard it. */ -ARG * -stab_to_arg(atype,stab) -int atype; -register STAB *stab; -{ - register ARG *arg; + /* Return failure if at end of input. */ + if (yychar == YYEOF) { + /* Pop the error token. */ + YYPOPSTACK; + /* Pop the rest of the stack. */ + while (yyss < yyssp) { + YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); + YYPOPSTACK; + } + YYABORT; + } - arg = op_new(1); - arg->arg_type = O_ITEM; - arg[1].arg_type = atype; - arg[1].arg_ptr.arg_stab = stab; - return arg; -} + YYDSYMPRINTF ("Error: discarding", yytoken, &yylval); + yychar = YYEMPTY; -ARG * -cval_to_arg(cval) -register char *cval; -{ - register ARG *arg; - - arg = op_new(1); - arg->arg_type = O_ITEM; - arg[1].arg_type = A_SINGLE; - arg[1].arg_ptr.arg_str = str_make(cval); - safefree(cval); - return arg; -} + } -ARG * -op_new(numargs) -int numargs; -{ - register ARG *arg; + /* Else will try to reuse lookahead token after shifting the error + token. */ + goto yyerrlab1; - arg = (ARG*)safemalloc((numargs + 1) * sizeof (ARG)); - bzero((char *)arg, (numargs + 1) * sizeof (ARG)); - arg->arg_ptr.arg_str = str_new(0); - arg->arg_len = numargs; - return arg; -} -void -free_arg(arg) -ARG *arg; -{ - str_free(arg->arg_ptr.arg_str); - safefree((char*)arg); -} + /*----------------------------------------------------. + | yyerrlab1 -- error raised explicitly by an action. | + `----------------------------------------------------*/ + yyerrlab1: + yyerrstatus = 3; /* Each real token shifted decrements this. */ -ARG * -make_match(type,expr,spat) -int type; -ARG *expr; -SPAT *spat; -{ - register ARG *arg; + for (;;) { + yyn = yypact[yystate]; + if (yyn != YYPACT_NINF) { + yyn += YYTERROR; + if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) { + yyn = yytable[yyn]; + if (0 < yyn) + break; + } + } - arg = make_op(type,2,expr,Nullarg,Nullarg,0); + /* Pop the current state because it cannot handle the error token. */ + if (yyssp == yyss) + YYABORT; - arg[2].arg_type = A_SPAT; - arg[2].arg_ptr.arg_spat = spat; + YYDSYMPRINTF ("Error: popping", yystos[*yyssp], yyvsp); + yyvsp--; #ifdef DEBUGGING - if (debug & 16) - fprintf(stderr,"make_match SPAT=%lx\n",spat); + yynsp--; #endif + yystate = *--yyssp; - if (type == O_SUBST || type == O_NSUBST) { - if (arg[1].arg_type != A_STAB) - yyerror("Illegal lvalue"); - arg[1].arg_type = A_LVAL; + YY_STACK_PRINT (yyss, yyssp, yyvs, yyns); } - return arg; -} -ARG * -cmd_to_arg(cmd) -CMD *cmd; -{ - register ARG *arg; + if (yyn == YYFINAL) + YYACCEPT; - arg = op_new(1); - arg->arg_type = O_ITEM; - arg[1].arg_type = A_CMD; - arg[1].arg_ptr.arg_cmd = cmd; - return arg; -} + YYDPRINTF ((Perl_debug_log, "Shifting error token, ")); -CMD * -wopt(cmd) -register CMD *cmd; -{ - register CMD *tail; - register ARG *arg = cmd->c_expr; - char *tmps; /* used by True macro */ - - /* hoist "while ()" up into command block */ - - if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_READ) { - cmd->c_flags &= ~CF_OPTIMIZE; /* clear optimization type */ - cmd->c_flags |= CFT_GETS; /* and set it to do the input */ - cmd->c_stab = arg[1].arg_ptr.arg_stab; - if (arg[1].arg_ptr.arg_stab->stab_io->flags & IOF_ARGV) { - cmd->c_expr = l(make_op(O_ASSIGN, 2, /* fake up "$_ =" */ - stab_to_arg(A_LVAL,defstab), arg, Nullarg,1 )); - } - else { - free_arg(arg); - cmd->c_expr = Nullarg; - } - } + *++yyvsp = yylval; +#ifdef DEBUGGING + *++yynsp =""; +#endif - /* First find the end of the true list */ + yystate = yyn; + YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate)); - if (cmd->ucmd.ccmd.cc_true == Nullcmd) - return cmd; - for (tail = cmd->ucmd.ccmd.cc_true; tail->c_next; tail = tail->c_next) ; + goto yynewstate; - /* if there's a continue block, link it to true block and find end */ - if (cmd->ucmd.ccmd.cc_alt != Nullcmd) { - tail->c_next = cmd->ucmd.ccmd.cc_alt; - for ( ; tail->c_next; tail = tail->c_next) ; - } + /*-------------------------------------. + | yyacceptlab -- YYACCEPT comes here. | + `-------------------------------------*/ + yyacceptlab: + yyresult = 0; + goto yyreturn; - /* Here's the real trick: link the end of the list back to the beginning, - * inserting a "last" block to break out of the loop. This saves one or - * two procedure calls every time through the loop, because of how cmd_exec - * does tail recursion. - */ - - tail->c_next = (CMD *) safemalloc(sizeof (CMD)); - tail = tail->c_next; - if (!cmd->ucmd.ccmd.cc_alt) - cmd->ucmd.ccmd.cc_alt = tail; /* every loop has a continue now */ - - bcopy((char *)cmd, (char *)tail, sizeof(CMD)); - tail->c_type = C_EXPR; - tail->c_flags ^= CF_INVERT; /* turn into "last unless" */ - tail->c_next = tail->ucmd.ccmd.cc_true; /* loop directly back to top */ - tail->ucmd.acmd.ac_expr = make_op(O_LAST,0,Nullarg,Nullarg,Nullarg,0); - tail->ucmd.acmd.ac_stab = Nullstab; - return cmd; -} + /*-----------------------------------. + | yyabortlab -- YYABORT comes here. | + `-----------------------------------*/ + yyabortlab: + yyresult = 1; + goto yyreturn; -FCMD * -load_format() -{ - FCMD froot; - FCMD *flinebeg; - register FCMD *fprev = &froot; - register FCMD *fcmd; - register char *s; - register char *t; - register char tmpchar; - bool noblank; - - while ((s = str_gets(linestr,rsfp)) != Nullch) { - line++; - if (strEQ(s,".\n")) { - bufptr = s; - return froot.f_next; - } - if (*s == '#') - continue; - flinebeg = Nullfcmd; - noblank = FALSE; - while (*s) { - fcmd = (FCMD *)safemalloc(sizeof (FCMD)); - bzero((char*)fcmd, sizeof (FCMD)); - fprev->f_next = fcmd; - fprev = fcmd; - for (t=s; *t && *t != '@' && *t != '^'; t++) { - if (*t == '~') { - noblank = TRUE; - *t = ' '; - } - } - tmpchar = *t; - *t = '\0'; - fcmd->f_pre = savestr(s); - fcmd->f_presize = strlen(s); - *t = tmpchar; - s = t; - if (!*s) { - if (noblank) - fcmd->f_flags |= FC_NOBLANK; - break; - } - if (!flinebeg) - flinebeg = fcmd; /* start values here */ - if (*s++ == '^') - fcmd->f_flags |= FC_CHOP; /* for doing text filling */ - switch (*s) { - case '*': - fcmd->f_type = F_LINES; - *s = '\0'; - break; - case '<': - fcmd->f_type = F_LEFT; - while (*s == '<') - s++; - break; - case '>': - fcmd->f_type = F_RIGHT; - while (*s == '>') - s++; - break; - case '|': - fcmd->f_type = F_CENTER; - while (*s == '|') - s++; - break; - default: - fcmd->f_type = F_LEFT; - break; - } - if (fcmd->f_flags & FC_CHOP && *s == '.') { - fcmd->f_flags |= FC_MORE; - while (*s == '.') - s++; - } - fcmd->f_size = s-t; - } - if (flinebeg) { - again: - if ((bufptr = str_gets(linestr ,rsfp)) == Nullch) - goto badform; - line++; - if (strEQ(bufptr,".\n")) { - yyerror("Missing values line"); - return froot.f_next; - } - if (*bufptr == '#') - goto again; - lex_newlines = TRUE; - while (flinebeg || *bufptr) { - switch(yylex()) { - default: - yyerror("Bad value in format"); - *bufptr = '\0'; - break; - case '\n': - if (flinebeg) - yyerror("Missing value in format"); - *bufptr = '\0'; - break; - case REG: - yylval.arg = stab_to_arg(A_LVAL,yylval.stabval); - /* FALL THROUGH */ - case RSTRING: - if (!flinebeg) - yyerror("Extra value in format"); - else { - flinebeg->f_expr = yylval.arg; - do { - flinebeg = flinebeg->f_next; - } while (flinebeg && flinebeg->f_size == 0); - } - break; - case ',': case ';': - continue; - } - } - lex_newlines = FALSE; - } - } - badform: - bufptr = str_get(linestr); - yyerror("Format not terminated"); - return froot.f_next; + /*----------------------------------------------. + | yyoverflowlab -- parser overflow comes here. | + `----------------------------------------------*/ + yyoverflowlab: + yyerror ("parser stack overflow"); + yyresult = 2; + /* Fall through. */ + + yyreturn: + + LEAVE; /* force stack free before we return */ + + return yyresult; } + +/* + * Local variables: + * c-indentation-style: bsd + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + * + * ex: set ts=8 sts=4 sw=4 noet: + */