3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "It all comes from here, the stench and the peril." --Frodo
17 static void check_uni _((void));
18 static void force_next _((I32 type));
19 static char *force_version _((char *start));
20 static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21 static SV *q _((SV *sv));
22 static char *scan_const _((char *start));
23 static char *scan_formline _((char *s));
24 static char *scan_heredoc _((char *s));
25 static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen,
27 static char *scan_inputsymbol _((char *start));
28 static char *scan_pat _((char *start));
29 static char *scan_str _((char *start));
30 static char *scan_subst _((char *start));
31 static char *scan_trans _((char *start));
32 static char *scan_word _((char *s, char *dest, STRLEN destlen,
33 int allow_package, STRLEN *slp));
34 static char *skipspace _((char *s));
35 static void checkcomma _((char *s, char *name, char *what));
36 static void force_ident _((char *s, int kind));
37 static void incline _((char *s));
38 static int intuit_method _((char *s, GV *gv));
39 static int intuit_more _((char *s));
40 static I32 lop _((I32 f, expectation x, char *s));
41 static void missingterm _((char *s));
42 static void no_op _((char *what, char *s));
43 static void set_csh _((void));
44 static I32 sublex_done _((void));
45 static I32 sublex_push _((void));
46 static I32 sublex_start _((void));
48 static int uni _((I32 f, char *s));
50 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
51 static void restore_rsfp _((void *f));
53 static char ident_too_long[] = "Identifier too long";
55 static char *linestart; /* beg. of most recently read line */
57 static char pending_ident; /* pending identifier lookup */
60 I32 super_state; /* lexer state to save */
61 I32 sub_inwhat; /* "lex_inwhat" to use */
62 OP *sub_op; /* "lex_op" to use */
65 /* The following are arranged oddly so that the guard on the switch statement
66 * can get by with a single comparison (if the compiler is smart enough).
69 /* #define LEX_NOTPARSING 11 is done in perl.h. */
72 #define LEX_INTERPNORMAL 9
73 #define LEX_INTERPCASEMOD 8
74 #define LEX_INTERPPUSH 7
75 #define LEX_INTERPSTART 6
76 #define LEX_INTERPEND 5
77 #define LEX_INTERPENDMAYBE 4
78 #define LEX_INTERPCONCAT 3
79 #define LEX_INTERPCONST 2
80 #define LEX_FORMLINE 1
81 #define LEX_KNOWNEXT 0
90 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
92 # include <unistd.h> /* Needed for execv() */
100 #include "keywords.h"
105 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
107 #define TOKEN(retval) return (bufptr = s,(int)retval)
108 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
109 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
110 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
111 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
112 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
113 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
114 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
115 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
116 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
117 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
118 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
119 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
120 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
121 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
122 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
123 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
124 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
125 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
126 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
128 /* This bit of chicanery makes a unary function followed by
129 * a parenthesis into a function with one argument, highest precedence.
131 #define UNI(f) return(yylval.ival = f, \
134 last_uni = oldbufptr, \
136 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
138 #define UNIBRACK(f) return(yylval.ival = f, \
140 last_uni = oldbufptr, \
141 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
143 /* grandfather return to old style */
144 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
150 if (*bufptr == '=') {
152 if (toketype == ANDAND)
153 yylval.ival = OP_ANDASSIGN;
154 else if (toketype == OROR)
155 yylval.ival = OP_ORASSIGN;
166 char *oldbp = bufptr;
167 bool is_first = (oldbufptr == linestart);
170 yywarn(form("%s found where operator expected", what));
172 warn("\t(Missing semicolon on previous line?)\n");
173 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
175 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
176 if (t < bufptr && isSPACE(*t))
177 warn("\t(Do you need to predeclare %.*s?)\n",
178 t - oldoldbufptr, oldoldbufptr);
182 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
193 char *nl = strrchr(s,'\n');
197 else if (multi_close < 32 || multi_close == 127) {
199 tmpbuf[1] = toCTRL(multi_close);
205 *tmpbuf = multi_close;
209 q = strchr(s,'"') ? '\'' : '"';
210 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
218 warn("Use of %s is deprecated", s);
224 deprecate("comma-less variable list");
236 SAVEI32(lex_brackets);
237 SAVEI32(lex_fakebrack);
238 SAVEI32(lex_casemods);
243 SAVEI16(curcop->cop_line);
247 SAVEPPTR(oldoldbufptr);
250 SAVEPPTR(lex_brackstack);
251 SAVEPPTR(lex_casestack);
252 SAVEDESTRUCTOR(restore_rsfp, rsfp);
254 lex_state = LEX_NORMAL;
259 New(899, lex_brackstack, 120, char);
260 New(899, lex_casestack, 12, char);
261 SAVEFREEPV(lex_brackstack);
262 SAVEFREEPV(lex_casestack);
264 *lex_casestack = '\0';
268 SvREFCNT_dec(lex_stuff);
271 SvREFCNT_dec(lex_repl);
276 if (SvREADONLY(linestr))
277 linestr = sv_2mortal(newSVsv(linestr));
278 s = SvPV(linestr, len);
279 if (len && s[len-1] != ';') {
280 if (!(SvFLAGS(linestr) & SVs_TEMP))
281 linestr = sv_2mortal(newSVsv(linestr));
282 sv_catpvn(linestr, "\n;", 2);
285 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
286 bufend = bufptr + SvCUR(linestr);
288 rs = newSVpv("\n", 1);
302 PerlIO *fp = (PerlIO*)f;
304 if (rsfp == PerlIO_stdin())
305 PerlIO_clearerr(rsfp);
306 else if (rsfp && (rsfp != fp))
324 while (*s == ' ' || *s == '\t') s++;
325 if (strnEQ(s, "line ", 5)) {
334 while (*s == ' ' || *s == '\t')
336 if (*s == '"' && (t = strchr(s+1, '"')))
340 return; /* false alarm */
341 for (t = s; !isSPACE(*t); t++) ;
346 curcop->cop_filegv = gv_fetchfile(s);
348 curcop->cop_filegv = gv_fetchfile(origfilename);
350 curcop->cop_line = atoi(n)-1;
358 if (lex_formbrack && lex_brackets <= lex_formbrack) {
359 while (s < bufend && (*s == ' ' || *s == '\t'))
365 while (s < bufend && isSPACE(*s))
367 if (s < bufend && *s == '#') {
368 while (s < bufend && *s != '\n')
373 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
375 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
376 if (minus_n || minus_p) {
377 sv_setpv(linestr,minus_p ?
378 ";}continue{print or die qq(-p destination: $!\\n)" :
380 sv_catpv(linestr,";}");
381 minus_n = minus_p = 0;
384 sv_setpv(linestr,";");
385 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
386 bufend = SvPVX(linestr) + SvCUR(linestr);
387 if (preprocess && !in_eval)
388 (void)my_pclose(rsfp);
389 else if ((PerlIO*)rsfp == PerlIO_stdin())
390 PerlIO_clearerr(rsfp);
392 (void)PerlIO_close(rsfp);
398 linestart = bufptr = s + prevlen;
399 bufend = s + SvCUR(linestr);
402 if (PERLDB_LINE && curstash != debstash) {
403 SV *sv = NEWSV(85,0);
405 sv_upgrade(sv, SVt_PVMG);
406 sv_setpvn(sv,bufptr,bufend-bufptr);
407 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
418 if (oldoldbufptr != last_uni)
420 while (isSPACE(*last_uni))
422 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
423 if ((t = strchr(s, '(')) && t < bufptr)
427 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
434 #define UNI(f) return uni(f,s)
444 last_uni = oldbufptr;
455 #endif /* CRIPPLED_CC */
457 #define LOP(f,x) return lop(f,x,s)
462 (I32 f, expectation x, char *s)
468 #endif /* CAN_PROTOTYPE */
475 last_lop = oldbufptr;
492 nexttype[nexttoke] = type;
494 if (lex_state != LEX_KNOWNEXT) {
495 lex_defer = lex_state;
497 lex_state = LEX_KNOWNEXT;
502 force_word(start,token,check_keyword,allow_pack,allow_tick)
503 register char *start;
512 start = skipspace(start);
515 (allow_pack && *s == ':') ||
516 (allow_tick && *s == '\'') )
518 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
519 if (check_keyword && keyword(tokenbuf, len))
521 if (token == METHOD) {
531 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
532 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
544 OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
545 nextval[nexttoke].opval = o;
548 dTHR; /* just for in_eval */
549 o->op_private = OPpCONST_ENTERED;
550 /* XXX see note in pp_entereval() for why we forgo typo
551 warnings if the symbol must be introduced in an eval.
553 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
554 kind == '$' ? SVt_PV :
555 kind == '@' ? SVt_PVAV :
556 kind == '%' ? SVt_PVHV :
567 OP *version = Nullop;
571 /* default VERSION number -- GBARR */
576 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
577 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
579 /* real VERSION number -- GBARR */
580 version = yylval.opval;
584 /* NOTE: The parser sees the package name and the VERSION swapped */
585 nextval[nexttoke].opval = version;
603 s = SvPV_force(sv, len);
607 while (s < send && *s != '\\')
614 if (s + 1 < send && (s[1] == '\\'))
615 s++; /* all that, just for this */
620 SvCUR_set(sv, d - SvPVX(sv));
628 register I32 op_type = yylval.ival;
630 if (op_type == OP_NULL) {
631 yylval.opval = lex_op;
635 if (op_type == OP_CONST || op_type == OP_READLINE) {
636 SV *sv = q(lex_stuff);
638 char *p = SvPV(sv, len);
639 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
645 sublex_info.super_state = lex_state;
646 sublex_info.sub_inwhat = op_type;
647 sublex_info.sub_op = lex_op;
648 lex_state = LEX_INTERPPUSH;
652 yylval.opval = lex_op;
666 lex_state = sublex_info.super_state;
668 SAVEI32(lex_brackets);
669 SAVEI32(lex_fakebrack);
670 SAVEI32(lex_casemods);
675 SAVEI16(curcop->cop_line);
678 SAVEPPTR(oldoldbufptr);
681 SAVEPPTR(lex_brackstack);
682 SAVEPPTR(lex_casestack);
687 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
688 bufend += SvCUR(linestr);
694 New(899, lex_brackstack, 120, char);
695 New(899, lex_casestack, 12, char);
696 SAVEFREEPV(lex_brackstack);
697 SAVEFREEPV(lex_casestack);
699 *lex_casestack = '\0';
701 lex_state = LEX_INTERPCONCAT;
702 curcop->cop_line = multi_start;
704 lex_inwhat = sublex_info.sub_inwhat;
705 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
706 lex_inpat = sublex_info.sub_op;
718 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
722 if (lex_casemods) { /* oops, we've got some unbalanced parens */
723 lex_state = LEX_INTERPCASEMOD;
727 /* Is there a right-hand side to take care of? */
728 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
731 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
732 bufend += SvCUR(linestr);
738 *lex_casestack = '\0';
740 if (SvCOMPILED(lex_repl)) {
741 lex_state = LEX_INTERPNORMAL;
745 lex_state = LEX_INTERPCONCAT;
751 bufend = SvPVX(linestr);
752 bufend += SvCUR(linestr);
762 register char *send = bufend;
763 SV *sv = NEWSV(93, send - start);
764 register char *s = start;
765 register char *d = SvPVX(sv);
766 bool dorange = FALSE;
770 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
771 : (lex_inwhat & OP_TRANS)
775 while (s < send || dorange) {
776 if (lex_inwhat == OP_TRANS) {
781 SvGROW(sv, SvLEN(sv) + 256);
785 for (i = (U8)*d; i <= max; i++)
790 else if (*s == '-' && s+1 < send && s != start) {
795 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
796 while (s < send && *s != ')')
799 else if (*s == '#' && lex_inpat &&
800 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
801 while (s+1 < send && *s != '\n')
804 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
806 else if (*s == '$') {
807 if (!lex_inpat) /* not a regexp, so $ must be var */
809 if (s + 1 < send && !strchr(")| \n\t", s[1]))
810 break; /* in regexp, $ might be tail anchor */
812 if (*s == '\\' && s+1 < send) {
814 if (*s && strchr(leaveit, *s)) {
819 if (lex_inwhat == OP_SUBST && !lex_inpat &&
820 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
823 warn("\\%c better written as $%c", *s, *s);
827 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
833 if (lex_inwhat == OP_TRANS) {
841 case '0': case '1': case '2': case '3':
842 case '4': case '5': case '6': case '7':
843 *d++ = scan_oct(s, 3, &len);
847 *d++ = scan_hex(++s, 2, &len);
883 SvCUR_set(sv, d - SvPVX(sv));
886 if (SvCUR(sv) + 5 < SvLEN(sv)) {
887 SvLEN_set(sv, SvCUR(sv) + 1);
888 Renew(SvPVX(sv), SvLEN(sv), char);
891 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
897 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
904 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
906 if (*s != '{' && *s != '[')
911 /* In a pattern, so maybe we have {n,m}. */
928 /* On the other hand, maybe we have a character class */
931 if (*s == ']' || *s == '^')
934 int weight = 2; /* let's weigh the evidence */
936 unsigned char un_char = 0, last_un_char;
937 char *send = strchr(s,']');
938 char tmpbuf[sizeof tokenbuf * 4];
940 if (!send) /* has to be an expression */
946 else if (isDIGIT(*s)) {
948 if (isDIGIT(s[1]) && s[2] == ']')
954 for (; s < send; s++) {
955 last_un_char = un_char;
956 un_char = (unsigned char)*s;
961 weight -= seen[un_char] * 10;
963 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
964 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
969 else if (*s == '$' && s[1] &&
970 strchr("[#!%*<>()-=",s[1])) {
971 if (/*{*/ strchr("])} =",s[2]))
980 if (strchr("wds]",s[1]))
982 else if (seen['\''] || seen['"'])
984 else if (strchr("rnftbxcav",s[1]))
986 else if (isDIGIT(s[1])) {
988 while (s[1] && isDIGIT(s[1]))
998 if (strchr("aA01! ",last_un_char))
1000 if (strchr("zZ79~",s[1]))
1004 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
1005 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1010 if (keyword(tmpbuf, d - tmpbuf))
1013 if (un_char == last_un_char + 1)
1015 weight -= seen[un_char];
1020 if (weight >= 0) /* probably a character class */
1028 intuit_method(start,gv)
1032 char *s = start + (*start == '$');
1033 char tmpbuf[sizeof tokenbuf];
1043 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1044 if (*start == '$') {
1045 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1050 return *s == '(' ? FUNCMETH : METHOD;
1052 if (!keyword(tmpbuf, len)) {
1053 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1054 if (indirgv && GvCVu(indirgv))
1056 /* filehandle or package name makes it a method */
1057 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1059 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1060 return 0; /* no assumptions -- "=>" quotes bearword */
1061 nextval[nexttoke].opval =
1062 (OP*)newSVOP(OP_CONST, 0,
1064 nextval[nexttoke].opval->op_private =
1069 return *s == '(' ? FUNCMETH : METHOD;
1079 char *pdb = getenv("PERL5DB");
1083 return "BEGIN { require 'perl5db.pl' }";
1089 /* Encoded script support. filter_add() effectively inserts a
1090 * 'pre-processing' function into the current source input stream.
1091 * Note that the filter function only applies to the current source file
1092 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1094 * The datasv parameter (which may be NULL) can be used to pass
1095 * private data to this instance of the filter. The filter function
1096 * can recover the SV using the FILTER_DATA macro and use it to
1097 * store private buffers and state information.
1099 * The supplied datasv parameter is upgraded to a PVIO type
1100 * and the IoDIRP field is used to store the function pointer.
1101 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1102 * private use must be set using malloc'd pointers.
1104 static int filter_debug = 0;
1107 filter_add(funcp, datasv)
1111 if (!funcp){ /* temporary handy debugging hack to be deleted */
1112 filter_debug = atoi((char*)datasv);
1116 rsfp_filters = newAV();
1119 if (!SvUPGRADE(datasv, SVt_PVIO))
1120 die("Can't upgrade filter_add data to SVt_PVIO");
1121 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1123 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1124 av_unshift(rsfp_filters, 1);
1125 av_store(rsfp_filters, 0, datasv) ;
1130 /* Delete most recently added instance of this filter function. */
1136 warn("filter_del func %p", funcp);
1137 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1139 /* if filter is on top of stack (usual case) just pop it off */
1140 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1141 /* sv_free(av_pop(rsfp_filters)); */
1142 sv_free(av_shift(rsfp_filters));
1146 /* we need to search for the correct entry and clear it */
1147 die("filter_del can only delete in reverse order (currently)");
1151 /* Invoke the n'th filter function for the current rsfp. */
1153 filter_read(idx, buf_sv, maxlen)
1156 int maxlen; /* 0 = read one text line */
1163 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1164 /* Provide a default input filter to make life easy. */
1165 /* Note that we append to the line. This is handy. */
1167 warn("filter_read %d: from rsfp\n", idx);
1171 int old_len = SvCUR(buf_sv) ;
1173 /* ensure buf_sv is large enough */
1174 SvGROW(buf_sv, old_len + maxlen) ;
1175 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1176 if (PerlIO_error(rsfp))
1177 return -1; /* error */
1179 return 0 ; /* end of file */
1181 SvCUR_set(buf_sv, old_len + len) ;
1184 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1185 if (PerlIO_error(rsfp))
1186 return -1; /* error */
1188 return 0 ; /* end of file */
1191 return SvCUR(buf_sv);
1193 /* Skip this filter slot if filter has been deleted */
1194 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1196 warn("filter_read %d: skipped (filter deleted)\n", idx);
1197 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1199 /* Get function pointer hidden within datasv */
1200 funcp = (filter_t)IoDIRP(datasv);
1202 warn("filter_read %d: via function %p (%s)\n",
1203 idx, funcp, SvPV(datasv,na));
1204 /* Call function. The function is expected to */
1205 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1206 /* Return: <0:error, =0:eof, >0:not eof */
1207 return (*funcp)(idx, buf_sv, maxlen);
1211 filter_gets(sv,fp, append)
1213 register PerlIO *fp;
1219 SvCUR_set(sv, 0); /* start with empty line */
1220 if (FILTER_READ(0, sv, 0) > 0)
1221 return ( SvPVX(sv) ) ;
1226 return (sv_gets(sv, fp, append));
1232 static char* exp_name[] =
1233 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1236 EXT int yychar; /* last token */
1247 if (pending_ident) {
1248 char pit = pending_ident;
1252 if (strchr(tokenbuf,':'))
1253 croak(no_myglob,tokenbuf);
1254 yylval.opval = newOP(OP_PADANY, 0);
1255 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1259 if (!strchr(tokenbuf,':')) {
1261 /* Check for single character per-thread magicals */
1262 if (tokenbuf[0] == '$' && tokenbuf[2] == '\0'
1263 && !isALPHA(tokenbuf[1]) /* Rule out obvious non-magicals */
1264 && (tmp = find_thread_magical(&tokenbuf[1])) != NOT_IN_PAD)
1266 yylval.opval = newOP(OP_SPECIFIC, 0);
1267 yylval.opval->op_targ = tmp;
1270 #endif /* USE_THREADS */
1271 if ((tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1272 if (last_lop_op == OP_SORT &&
1273 tokenbuf[0] == '$' &&
1274 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1277 for (d = in_eval ? oldoldbufptr : linestart;
1278 d < bufend && *d != '\n';
1281 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1282 croak("Can't use \"my %s\" in sort comparison",
1288 yylval.opval = newOP(OP_PADANY, 0);
1289 yylval.opval->op_targ = tmp;
1294 /* Force them to make up their mind on "@foo". */
1295 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1296 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1297 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1298 yyerror(form("In string, %s now must be written as \\%s",
1299 tokenbuf, tokenbuf));
1302 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1303 yylval.opval->op_private = OPpCONST_ENTERED;
1304 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1305 ((tokenbuf[0] == '$') ? SVt_PV
1306 : (tokenbuf[0] == '@') ? SVt_PVAV
1311 switch (lex_state) {
1313 case LEX_NORMAL: /* Some compilers will produce faster */
1314 case LEX_INTERPNORMAL: /* code if we comment these out. */
1320 yylval = nextval[nexttoke];
1322 lex_state = lex_defer;
1323 expect = lex_expect;
1324 lex_defer = LEX_NORMAL;
1326 return(nexttype[nexttoke]);
1328 case LEX_INTERPCASEMOD:
1330 if (bufptr != bufend && *bufptr != '\\')
1331 croak("panic: INTERPCASEMOD");
1333 if (bufptr == bufend || bufptr[1] == 'E') {
1336 oldmod = lex_casestack[--lex_casemods];
1337 lex_casestack[lex_casemods] = '\0';
1338 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1340 lex_state = LEX_INTERPCONCAT;
1344 if (bufptr != bufend)
1346 lex_state = LEX_INTERPCONCAT;
1351 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1352 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1353 if (strchr("LU", *s) &&
1354 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1356 lex_casestack[--lex_casemods] = '\0';
1359 if (lex_casemods > 10) {
1360 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1361 if (newlb != lex_casestack) {
1363 lex_casestack = newlb;
1366 lex_casestack[lex_casemods++] = *s;
1367 lex_casestack[lex_casemods] = '\0';
1368 lex_state = LEX_INTERPCONCAT;
1369 nextval[nexttoke].ival = 0;
1372 nextval[nexttoke].ival = OP_LCFIRST;
1374 nextval[nexttoke].ival = OP_UCFIRST;
1376 nextval[nexttoke].ival = OP_LC;
1378 nextval[nexttoke].ival = OP_UC;
1380 nextval[nexttoke].ival = OP_QUOTEMETA;
1382 croak("panic: yylex");
1394 case LEX_INTERPPUSH:
1395 return sublex_push();
1397 case LEX_INTERPSTART:
1398 if (bufptr == bufend)
1399 return sublex_done();
1401 lex_dojoin = (*bufptr == '@');
1402 lex_state = LEX_INTERPNORMAL;
1404 nextval[nexttoke].ival = 0;
1407 nextval[nexttoke].opval = newOP(OP_SPECIFIC, 0);
1408 nextval[nexttoke].opval->op_targ = find_thread_magical("\"");
1409 force_next(PRIVATEREF);
1411 force_ident("\"", '$');
1412 #endif /* USE_THREADS */
1413 nextval[nexttoke].ival = 0;
1415 nextval[nexttoke].ival = 0;
1417 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1426 case LEX_INTERPENDMAYBE:
1427 if (intuit_more(bufptr)) {
1428 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1436 lex_state = LEX_INTERPCONCAT;
1440 case LEX_INTERPCONCAT:
1443 croak("panic: INTERPCONCAT");
1445 if (bufptr == bufend)
1446 return sublex_done();
1448 if (SvIVX(linestr) == '\'') {
1449 SV *sv = newSVsv(linestr);
1452 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1456 s = scan_const(bufptr);
1458 lex_state = LEX_INTERPCASEMOD;
1460 lex_state = LEX_INTERPSTART;
1464 nextval[nexttoke] = yylval;
1477 lex_state = LEX_NORMAL;
1478 s = scan_formline(bufptr);
1485 oldoldbufptr = oldbufptr;
1488 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1494 croak("Unrecognized character \\%03o", *s & 255);
1497 goto fake_eof; /* emulate EOF on ^D or ^Z */
1503 yyerror("Missing right bracket");
1507 goto retry; /* ignore stray nulls */
1510 if (!in_eval && !preambled) {
1512 sv_setpv(linestr,incl_perldb());
1514 sv_catpv(linestr,";");
1516 while(AvFILL(preambleav) >= 0) {
1517 SV *tmpsv = av_shift(preambleav);
1518 sv_catsv(linestr, tmpsv);
1519 sv_catpv(linestr, ";");
1522 sv_free((SV*)preambleav);
1525 if (minus_n || minus_p) {
1526 sv_catpv(linestr, "LINE: while (<>) {");
1528 sv_catpv(linestr,"chomp;");
1530 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1532 GvIMPORTED_AV_on(gv);
1534 if (strchr("/'\"", *splitstr)
1535 && strchr(splitstr + 1, *splitstr))
1536 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1539 s = "'~#\200\1'"; /* surely one char is unused...*/
1540 while (s[1] && strchr(splitstr, *s)) s++;
1542 sv_catpvf(linestr, "@F=split(%s%c",
1543 "q" + (delim == '\''), delim);
1544 for (s = splitstr; *s; s++) {
1546 sv_catpvn(linestr, "\\", 1);
1547 sv_catpvn(linestr, s, 1);
1549 sv_catpvf(linestr, "%c);", delim);
1553 sv_catpv(linestr,"@F=split(' ');");
1556 sv_catpv(linestr, "\n");
1557 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1558 bufend = SvPVX(linestr) + SvCUR(linestr);
1559 if (PERLDB_LINE && curstash != debstash) {
1560 SV *sv = NEWSV(85,0);
1562 sv_upgrade(sv, SVt_PVMG);
1563 sv_setsv(sv,linestr);
1564 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1569 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1572 if (preprocess && !in_eval)
1573 (void)my_pclose(rsfp);
1574 else if ((PerlIO *)rsfp == PerlIO_stdin())
1575 PerlIO_clearerr(rsfp);
1577 (void)PerlIO_close(rsfp);
1582 if (!in_eval && (minus_n || minus_p)) {
1583 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1584 sv_catpv(linestr,";}");
1585 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1586 bufend = SvPVX(linestr) + SvCUR(linestr);
1587 minus_n = minus_p = 0;
1590 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1591 sv_setpv(linestr,"");
1592 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1595 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1598 /* Incest with pod. */
1599 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1600 sv_setpv(linestr, "");
1601 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1602 bufend = SvPVX(linestr) + SvCUR(linestr);
1607 } while (doextract);
1608 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1609 if (PERLDB_LINE && curstash != debstash) {
1610 SV *sv = NEWSV(85,0);
1612 sv_upgrade(sv, SVt_PVMG);
1613 sv_setsv(sv,linestr);
1614 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1616 bufend = SvPVX(linestr) + SvCUR(linestr);
1617 if (curcop->cop_line == 1) {
1618 while (s < bufend && isSPACE(*s))
1620 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1624 if (*s == '#' && *(s+1) == '!')
1626 #ifdef ALTERNATE_SHEBANG
1628 static char as[] = ALTERNATE_SHEBANG;
1629 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1630 d = s + (sizeof(as) - 1);
1632 #endif /* ALTERNATE_SHEBANG */
1641 while (*d && !isSPACE(*d))
1645 #ifdef ARG_ZERO_IS_SCRIPT
1646 if (ipathend > ipath) {
1648 * HP-UX (at least) sets argv[0] to the script name,
1649 * which makes $^X incorrect. And Digital UNIX and Linux,
1650 * at least, set argv[0] to the basename of the Perl
1651 * interpreter. So, having found "#!", we'll set it right.
1653 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1654 assert(SvPOK(x) || SvGMAGICAL(x));
1655 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1656 sv_setpvn(x, ipath, ipathend - ipath);
1659 TAINT_NOT; /* $^X is always tainted, but that's OK */
1661 #endif /* ARG_ZERO_IS_SCRIPT */
1666 d = instr(s,"perl -");
1668 d = instr(s,"perl");
1669 #ifdef ALTERNATE_SHEBANG
1671 * If the ALTERNATE_SHEBANG on this system starts with a
1672 * character that can be part of a Perl expression, then if
1673 * we see it but not "perl", we're probably looking at the
1674 * start of Perl code, not a request to hand off to some
1675 * other interpreter. Similarly, if "perl" is there, but
1676 * not in the first 'word' of the line, we assume the line
1677 * contains the start of the Perl program.
1679 if (d && *s != '#') {
1681 while (*c && !strchr("; \t\r\n\f\v#", *c))
1684 d = Nullch; /* "perl" not in first word; ignore */
1686 *s = '#'; /* Don't try to parse shebang line */
1688 #endif /* ALTERNATE_SHEBANG */
1693 !instr(s,"indir") &&
1694 instr(origargv[0],"perl"))
1700 while (s < bufend && isSPACE(*s))
1703 Newz(899,newargv,origargc+3,char*);
1705 while (s < bufend && !isSPACE(*s))
1708 Copy(origargv+1, newargv+2, origargc+1, char*);
1713 execv(ipath, newargv);
1714 croak("Can't exec %s", ipath);
1717 U32 oldpdb = perldb;
1718 bool oldn = minus_n;
1719 bool oldp = minus_p;
1721 while (*d && !isSPACE(*d)) d++;
1722 while (*d == ' ' || *d == '\t') d++;
1726 if (*d == 'M' || *d == 'm') {
1728 while (*d && !isSPACE(*d)) d++;
1729 croak("Too late for \"-%.*s\" option",
1732 d = moreswitches(d);
1734 if (PERLDB_LINE && !oldpdb ||
1735 ( minus_n || minus_p ) && !(oldn || oldp) )
1736 /* if we have already added "LINE: while (<>) {",
1737 we must not do it again */
1739 sv_setpv(linestr, "");
1740 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1741 bufend = SvPVX(linestr) + SvCUR(linestr);
1744 (void)gv_fetchfile(origfilename);
1751 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1753 lex_state = LEX_FORMLINE;
1758 warn("Illegal character \\%03o (carriage return)", '\r');
1760 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1761 case ' ': case '\t': case '\f': case 013:
1766 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1768 while (s < d && *s != '\n')
1773 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1775 lex_state = LEX_FORMLINE;
1785 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1790 while (s < bufend && (*s == ' ' || *s == '\t'))
1793 if (strnEQ(s,"=>",2)) {
1795 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1796 (int)tmp, (int)tmp);
1797 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1798 OPERATOR('-'); /* unary minus */
1800 last_uni = oldbufptr;
1801 last_lop_op = OP_FTEREAD; /* good enough */
1803 case 'r': FTST(OP_FTEREAD);
1804 case 'w': FTST(OP_FTEWRITE);
1805 case 'x': FTST(OP_FTEEXEC);
1806 case 'o': FTST(OP_FTEOWNED);
1807 case 'R': FTST(OP_FTRREAD);
1808 case 'W': FTST(OP_FTRWRITE);
1809 case 'X': FTST(OP_FTREXEC);
1810 case 'O': FTST(OP_FTROWNED);
1811 case 'e': FTST(OP_FTIS);
1812 case 'z': FTST(OP_FTZERO);
1813 case 's': FTST(OP_FTSIZE);
1814 case 'f': FTST(OP_FTFILE);
1815 case 'd': FTST(OP_FTDIR);
1816 case 'l': FTST(OP_FTLINK);
1817 case 'p': FTST(OP_FTPIPE);
1818 case 'S': FTST(OP_FTSOCK);
1819 case 'u': FTST(OP_FTSUID);
1820 case 'g': FTST(OP_FTSGID);
1821 case 'k': FTST(OP_FTSVTX);
1822 case 'b': FTST(OP_FTBLK);
1823 case 'c': FTST(OP_FTCHR);
1824 case 't': FTST(OP_FTTTY);
1825 case 'T': FTST(OP_FTTEXT);
1826 case 'B': FTST(OP_FTBINARY);
1827 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1828 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1829 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1831 croak("Unrecognized file test: -%c", (int)tmp);
1838 if (expect == XOPERATOR)
1843 else if (*s == '>') {
1846 if (isIDFIRST(*s)) {
1847 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1855 if (expect == XOPERATOR)
1858 if (isSPACE(*s) || !isSPACE(*bufptr))
1860 OPERATOR('-'); /* unary minus */
1867 if (expect == XOPERATOR)
1872 if (expect == XOPERATOR)
1875 if (isSPACE(*s) || !isSPACE(*bufptr))
1881 if (expect != XOPERATOR) {
1882 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1884 force_ident(tokenbuf, '*');
1897 if (expect == XOPERATOR) {
1902 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1905 yyerror("Final % should be \\% or %name");
1908 pending_ident = '%';
1930 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1931 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1936 if (curcop->cop_line < copline)
1937 copline = curcop->cop_line;
1948 if (lex_brackets <= 0)
1949 yyerror("Unmatched right bracket");
1952 if (lex_state == LEX_INTERPNORMAL) {
1953 if (lex_brackets == 0) {
1954 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1955 lex_state = LEX_INTERPEND;
1962 if (lex_brackets > 100) {
1963 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1964 if (newlb != lex_brackstack) {
1966 lex_brackstack = newlb;
1971 if (lex_formbrack) {
1975 if (oldoldbufptr == last_lop)
1976 lex_brackstack[lex_brackets++] = XTERM;
1978 lex_brackstack[lex_brackets++] = XOPERATOR;
1979 OPERATOR(HASHBRACK);
1981 while (s < bufend && (*s == ' ' || *s == '\t'))
1985 if (d < bufend && *d == '-') {
1988 while (d < bufend && (*d == ' ' || *d == '\t'))
1991 if (d < bufend && isIDFIRST(*d)) {
1992 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1994 while (d < bufend && (*d == ' ' || *d == '\t'))
1997 char minus = (tokenbuf[0] == '-');
1999 (keyword(tokenbuf + 1, len) ||
2000 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
2001 perl_get_cv(tokenbuf + 1, FALSE) ))
2002 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
2003 tokenbuf + !minus, tokenbuf + !minus);
2004 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
2011 lex_brackstack[lex_brackets++] = XSTATE;
2015 lex_brackstack[lex_brackets++] = XOPERATOR;
2020 if (oldoldbufptr == last_lop)
2021 lex_brackstack[lex_brackets++] = XTERM;
2023 lex_brackstack[lex_brackets++] = XOPERATOR;
2026 OPERATOR(HASHBRACK);
2027 /* This hack serves to disambiguate a pair of curlies
2028 * as being a block or an anon hash. Normally, expectation
2029 * determines that, but in cases where we're not in a
2030 * position to expect anything in particular (like inside
2031 * eval"") we have to resolve the ambiguity. This code
2032 * covers the case where the first term in the curlies is a
2033 * quoted string. Most other cases need to be explicitly
2034 * disambiguated by prepending a `+' before the opening
2035 * curly in order to force resolution as an anon hash.
2037 * XXX should probably propagate the outer expectation
2038 * into eval"" to rely less on this hack, but that could
2039 * potentially break current behavior of eval"".
2043 if (*s == '\'' || *s == '"' || *s == '`') {
2044 /* common case: get past first string, handling escapes */
2045 for (t++; t < bufend && *t != *s;)
2046 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2050 else if (*s == 'q') {
2053 || ((*t == 'q' || *t == 'x') && ++t < bufend
2054 && !isALNUM(*t)))) {
2056 char open, close, term;
2059 while (t < bufend && isSPACE(*t))
2063 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2067 for (t++; t < bufend; t++) {
2068 if (*t == '\\' && t+1 < bufend && open != '\\')
2070 else if (*t == open)
2074 for (t++; t < bufend; t++) {
2075 if (*t == '\\' && t+1 < bufend)
2077 else if (*t == close && --brackets <= 0)
2079 else if (*t == open)
2085 else if (isALPHA(*s)) {
2086 for (t++; t < bufend && isALNUM(*t); t++) ;
2088 while (t < bufend && isSPACE(*t))
2090 /* if comma follows first term, call it an anon hash */
2091 /* XXX it could be a comma expression with loop modifiers */
2092 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2093 || (*t == '=' && t[1] == '>')))
2094 OPERATOR(HASHBRACK);
2098 lex_brackstack[lex_brackets-1] = XSTATE;
2104 yylval.ival = curcop->cop_line;
2105 if (isSPACE(*s) || *s == '#')
2106 copline = NOLINE; /* invalidate current command line number */
2111 if (lex_brackets <= 0)
2112 yyerror("Unmatched right bracket");
2114 expect = (expectation)lex_brackstack[--lex_brackets];
2115 if (lex_brackets < lex_formbrack)
2117 if (lex_state == LEX_INTERPNORMAL) {
2118 if (lex_brackets == 0) {
2119 if (lex_fakebrack) {
2120 lex_state = LEX_INTERPEND;
2122 return yylex(); /* ignore fake brackets */
2124 if (*s == '-' && s[1] == '>')
2125 lex_state = LEX_INTERPENDMAYBE;
2126 else if (*s != '[' && *s != '{')
2127 lex_state = LEX_INTERPEND;
2130 if (lex_brackets < lex_fakebrack) {
2133 return yylex(); /* ignore fake brackets */
2143 if (expect == XOPERATOR) {
2144 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2152 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2155 force_ident(tokenbuf, '&');
2159 yylval.ival = (OPpENTERSUB_AMPER<<8);
2178 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2179 warn("Reversed %c= operator",(int)tmp);
2181 if (expect == XSTATE && isALPHA(tmp) &&
2182 (s == linestart+1 || s[-2] == '\n') )
2184 if (in_eval && !rsfp) {
2189 if (strnEQ(s,"=cut",4)) {
2206 if (lex_brackets < lex_formbrack) {
2208 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2209 if (*t == '\n' || *t == '#') {
2227 if (expect != XOPERATOR) {
2228 if (s[1] != '<' && !strchr(s,'>'))
2231 s = scan_heredoc(s);
2233 s = scan_inputsymbol(s);
2234 TERM(sublex_start());
2239 SHop(OP_LEFT_SHIFT);
2253 SHop(OP_RIGHT_SHIFT);
2262 if (expect == XOPERATOR) {
2263 if (lex_formbrack && lex_brackets == lex_formbrack) {
2266 return ','; /* grandfather non-comma-format format */
2270 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2271 if (expect == XOPERATOR)
2272 no_op("Array length", bufptr);
2274 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2279 pending_ident = '#';
2283 if (expect == XOPERATOR)
2284 no_op("Scalar", bufptr);
2286 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2289 yyerror("Final $ should be \\$ or $name");
2293 /* This kludge not intended to be bulletproof. */
2294 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2295 yylval.opval = newSVOP(OP_CONST, 0,
2296 newSViv((IV)compiling.cop_arybase));
2297 yylval.opval->op_private = OPpCONST_ARYBASE;
2302 if (lex_state == LEX_NORMAL)
2305 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2311 isSPACE(*t) || isALNUM(*t) || *t == '$';
2314 bufptr = skipspace(bufptr);
2315 while (t < bufend && *t != ']')
2317 warn("Multidimensional syntax %.*s not supported",
2318 (t - bufptr) + 1, bufptr);
2322 else if (*s == '{') {
2324 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2325 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2327 char tmpbuf[sizeof tokenbuf];
2329 for (t++; isSPACE(*t); t++) ;
2330 if (isIDFIRST(*t)) {
2331 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2332 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2333 warn("You need to quote \"%s\"", tmpbuf);
2340 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2341 bool islop = (last_lop == oldoldbufptr);
2342 if (!islop || last_lop_op == OP_GREPSTART)
2344 else if (strchr("$@\"'`q", *s))
2345 expect = XTERM; /* e.g. print $fh "foo" */
2346 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2347 expect = XTERM; /* e.g. print $fh &sub */
2348 else if (isIDFIRST(*s)) {
2349 char tmpbuf[sizeof tokenbuf];
2350 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2351 if (tmp = keyword(tmpbuf, len)) {
2352 /* binary operators exclude handle interpretations */
2364 expect = XTERM; /* e.g. print $fh length() */
2369 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2370 if (gv && GvCVu(gv))
2371 expect = XTERM; /* e.g. print $fh subr() */
2374 else if (isDIGIT(*s))
2375 expect = XTERM; /* e.g. print $fh 3 */
2376 else if (*s == '.' && isDIGIT(s[1]))
2377 expect = XTERM; /* e.g. print $fh .3 */
2378 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2379 expect = XTERM; /* e.g. print $fh -1 */
2380 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2381 expect = XTERM; /* print $fh <<"EOF" */
2383 pending_ident = '$';
2387 if (expect == XOPERATOR)
2390 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2393 yyerror("Final @ should be \\@ or @name");
2396 if (lex_state == LEX_NORMAL)
2398 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2402 /* Warn about @ where they meant $. */
2404 if (*s == '[' || *s == '{') {
2406 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2408 if (*t == '}' || *t == ']') {
2410 bufptr = skipspace(bufptr);
2411 warn("Scalar value %.*s better written as $%.*s",
2412 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2417 pending_ident = '@';
2420 case '/': /* may either be division or pattern */
2421 case '?': /* may either be conditional or pattern */
2422 if (expect != XOPERATOR) {
2425 TERM(sublex_start());
2433 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2434 (s == linestart || s[-1] == '\n') ) {
2439 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2445 yylval.ival = OPf_SPECIAL;
2451 if (expect != XOPERATOR)
2456 case '0': case '1': case '2': case '3': case '4':
2457 case '5': case '6': case '7': case '8': case '9':
2459 if (expect == XOPERATOR)
2465 if (expect == XOPERATOR) {
2466 if (lex_formbrack && lex_brackets == lex_formbrack) {
2469 return ','; /* grandfather non-comma-format format */
2475 missingterm((char*)0);
2476 yylval.ival = OP_CONST;
2477 TERM(sublex_start());
2481 if (expect == XOPERATOR) {
2482 if (lex_formbrack && lex_brackets == lex_formbrack) {
2485 return ','; /* grandfather non-comma-format format */
2491 missingterm((char*)0);
2492 yylval.ival = OP_CONST;
2493 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2494 if (*d == '$' || *d == '@' || *d == '\\') {
2495 yylval.ival = OP_STRINGIFY;
2499 TERM(sublex_start());
2503 if (expect == XOPERATOR)
2504 no_op("Backticks",s);
2506 missingterm((char*)0);
2507 yylval.ival = OP_BACKTICK;
2509 TERM(sublex_start());
2513 if (dowarn && lex_inwhat && isDIGIT(*s))
2514 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2515 if (expect == XOPERATOR)
2516 no_op("Backslash",s);
2520 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2559 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2561 /* Some keywords can be followed by any delimiter, including ':' */
2562 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2563 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2564 (tokenbuf[0] == 'q' &&
2565 strchr("qwx", tokenbuf[1]))));
2567 /* x::* is just a word, unless x is "CORE" */
2568 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2572 while (d < bufend && isSPACE(*d))
2573 d++; /* no comments skipped here, or s### is misparsed */
2575 /* Is this a label? */
2576 if (!tmp && expect == XSTATE
2577 && d < bufend && *d == ':' && *(d + 1) != ':') {
2579 yylval.pval = savepv(tokenbuf);
2584 /* Check for keywords */
2585 tmp = keyword(tokenbuf, len);
2587 /* Is this a word before a => operator? */
2588 if (strnEQ(d,"=>",2)) {
2590 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2591 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2592 tokenbuf, tokenbuf);
2593 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2594 yylval.opval->op_private = OPpCONST_BARE;
2598 if (tmp < 0) { /* second-class keyword? */
2599 if (expect != XOPERATOR && (*s != ':' || s[1] != ':') &&
2600 (((gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2601 GvCVu(gv) && GvIMPORTED_CV(gv)) ||
2602 ((gvp = (GV**)hv_fetch(globalstash,tokenbuf,len,FALSE)) &&
2603 (gv = *gvp) != (GV*)&sv_undef &&
2604 GvCVu(gv) && GvIMPORTED_CV(gv))))
2609 tmp = -tmp; gv = Nullgv; gvp = 0;
2616 default: /* not a keyword */
2619 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2621 /* Get the rest if it looks like a package qualifier */
2623 if (*s == '\'' || *s == ':' && s[1] == ':') {
2624 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2627 croak("Bad name after %s::", tokenbuf);
2630 if (expect == XOPERATOR) {
2631 if (bufptr == linestart) {
2637 no_op("Bareword",s);
2640 /* Look for a subroutine with this name in current package. */
2643 sv = newSVpv("CORE::GLOBAL::",14);
2644 sv_catpv(sv,tokenbuf);
2647 sv = newSVpv(tokenbuf,0);
2649 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2651 /* Presume this is going to be a bareword of some sort. */
2654 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
2655 yylval.opval->op_private = OPpCONST_BARE;
2657 /* See if it's the indirect object for a list operator. */
2660 oldoldbufptr < bufptr &&
2661 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2662 /* NO SKIPSPACE BEFORE HERE! */
2664 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2666 bool immediate_paren = *s == '(';
2668 /* (Now we can afford to cross potential line boundary.) */
2671 /* Two barewords in a row may indicate method call. */
2673 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2676 /* If not a declared subroutine, it's an indirect object. */
2677 /* (But it's an indir obj regardless for sort.) */
2679 if ((last_lop_op == OP_SORT ||
2680 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2681 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2682 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2687 /* If followed by a paren, it's certainly a subroutine. */
2693 if (gv && GvCVu(gv)) {
2694 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2695 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2700 nextval[nexttoke].opval = yylval.opval;
2707 /* If followed by var or block, call it a method (unless sub) */
2709 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2710 last_lop = oldbufptr;
2711 last_lop_op = OP_METHOD;
2715 /* If followed by a bareword, see if it looks like indir obj. */
2717 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2720 /* Not a method, so call it a subroutine (if defined) */
2722 if (gv && GvCVu(gv)) {
2724 if (lastchar == '-')
2725 warn("Ambiguous use of -%s resolved as -&%s()",
2726 tokenbuf, tokenbuf);
2727 last_lop = oldbufptr;
2728 last_lop_op = OP_ENTERSUB;
2729 /* Check for a constant sub */
2731 if ((sv = cv_const_sv(cv))) {
2733 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2734 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2735 yylval.opval->op_private = 0;
2739 /* Resolve to GV now. */
2740 op_free(yylval.opval);
2741 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2742 /* Is there a prototype? */
2745 char *proto = SvPV((SV*)cv, len);
2748 if (strEQ(proto, "$"))
2750 if (*proto == '&' && *s == '{') {
2751 sv_setpv(subname,"__ANON__");
2755 nextval[nexttoke].opval = yylval.opval;
2761 if (hints & HINT_STRICT_SUBS &&
2764 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2765 last_lop_op != OP_ACCEPT &&
2766 last_lop_op != OP_PIPE_OP &&
2767 last_lop_op != OP_SOCKPAIR)
2770 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2775 /* Call it a bare word */
2779 if (lastchar != '-') {
2780 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2782 warn(warn_reserved, tokenbuf);
2785 if (lastchar && strchr("*%&", lastchar)) {
2786 warn("Operator or semicolon missing before %c%s",
2787 lastchar, tokenbuf);
2788 warn("Ambiguous use of %c resolved as operator %c",
2789 lastchar, lastchar);
2795 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2796 newSVsv(GvSV(curcop->cop_filegv)));
2800 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2801 newSVpvf("%ld", (long)curcop->cop_line));
2804 case KEY___PACKAGE__:
2805 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2807 ? newSVsv(curstname)
2816 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2817 char *pname = "main";
2818 if (tokenbuf[2] == 'D')
2819 pname = HvNAME(curstash ? curstash : defstash);
2820 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2823 GvIOp(gv) = newIO();
2824 IoIFP(GvIOp(gv)) = rsfp;
2825 #if defined(HAS_FCNTL) && defined(F_SETFD)
2827 int fd = PerlIO_fileno(rsfp);
2828 fcntl(fd,F_SETFD,fd >= 3);
2831 /* Mark this internal pseudo-handle as clean */
2832 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2834 IoTYPE(GvIOp(gv)) = '|';
2835 else if ((PerlIO*)rsfp == PerlIO_stdin())
2836 IoTYPE(GvIOp(gv)) = '-';
2838 IoTYPE(GvIOp(gv)) = '<';
2849 if (expect == XSTATE) {
2856 if (*s == ':' && s[1] == ':') {
2859 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2860 tmp = keyword(tokenbuf, len);
2874 LOP(OP_ACCEPT,XTERM);
2880 LOP(OP_ATAN2,XTERM);
2889 LOP(OP_BLESS,XTERM);
2898 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2918 LOP(OP_CRYPT,XTERM);
2922 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2923 if (*d != '0' && isDIGIT(*d))
2924 yywarn("chmod: mode argument is missing initial 0");
2926 LOP(OP_CHMOD,XTERM);
2929 LOP(OP_CHOWN,XTERM);
2932 LOP(OP_CONNECT,XTERM);
2948 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2952 hints |= HINT_BLOCK_SCOPE;
2962 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2963 LOP(OP_DBMOPEN,XTERM);
2969 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2976 yylval.ival = curcop->cop_line;
2990 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2991 UNIBRACK(OP_ENTEREVAL);
3006 case KEY_endhostent:
3012 case KEY_endservent:
3015 case KEY_endprotoent:
3026 yylval.ival = curcop->cop_line;
3028 if (isIDFIRST(*s)) {
3030 if ((bufend - p) >= 3 &&
3031 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
3035 croak("Missing $ on loop variable");
3040 LOP(OP_FORMLINE,XTERM);
3046 LOP(OP_FCNTL,XTERM);
3052 LOP(OP_FLOCK,XTERM);
3061 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3064 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3079 case KEY_getpriority:
3080 LOP(OP_GETPRIORITY,XTERM);
3082 case KEY_getprotobyname:
3085 case KEY_getprotobynumber:
3086 LOP(OP_GPBYNUMBER,XTERM);
3088 case KEY_getprotoent:
3100 case KEY_getpeername:
3101 UNI(OP_GETPEERNAME);
3103 case KEY_gethostbyname:
3106 case KEY_gethostbyaddr:
3107 LOP(OP_GHBYADDR,XTERM);
3109 case KEY_gethostent:
3112 case KEY_getnetbyname:
3115 case KEY_getnetbyaddr:
3116 LOP(OP_GNBYADDR,XTERM);
3121 case KEY_getservbyname:
3122 LOP(OP_GSBYNAME,XTERM);
3124 case KEY_getservbyport:
3125 LOP(OP_GSBYPORT,XTERM);
3127 case KEY_getservent:
3130 case KEY_getsockname:
3131 UNI(OP_GETSOCKNAME);
3133 case KEY_getsockopt:
3134 LOP(OP_GSOCKOPT,XTERM);
3156 yylval.ival = curcop->cop_line;
3160 LOP(OP_INDEX,XTERM);
3166 LOP(OP_IOCTL,XTERM);
3178 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3209 LOP(OP_LISTEN,XTERM);
3219 TERM(sublex_start());
3222 LOP(OP_MAPSTART,XREF);
3225 LOP(OP_MKDIR,XTERM);
3228 LOP(OP_MSGCTL,XTERM);
3231 LOP(OP_MSGGET,XTERM);
3234 LOP(OP_MSGRCV,XTERM);
3237 LOP(OP_MSGSND,XTERM);
3242 if (isIDFIRST(*s)) {
3243 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
3244 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3248 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3255 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3262 if (expect != XSTATE)
3263 yyerror("\"no\" not allowed in expression");
3264 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3265 s = force_version(s);
3274 if (isIDFIRST(*s)) {
3276 for (d = s; isALNUM(*d); d++) ;
3278 if (strchr("|&*+-=!?:.", *t))
3279 warn("Precedence problem: open %.*s should be open(%.*s)",
3285 yylval.ival = OP_OR;
3295 LOP(OP_OPEN_DIR,XTERM);
3298 checkcomma(s,tokenbuf,"filehandle");
3302 checkcomma(s,tokenbuf,"filehandle");
3321 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3325 LOP(OP_PIPE_OP,XTERM);
3330 missingterm((char*)0);
3331 yylval.ival = OP_CONST;
3332 TERM(sublex_start());
3340 missingterm((char*)0);
3341 if (dowarn && SvLEN(lex_stuff)) {
3342 d = SvPV_force(lex_stuff, len);
3343 for (; len; --len, ++d) {
3345 warn("Possible attempt to separate words with commas");
3349 warn("Possible attempt to put comments in qw() list");
3355 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3359 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3362 yylval.ival = OP_SPLIT;
3366 last_lop = oldbufptr;
3367 last_lop_op = OP_SPLIT;
3373 missingterm((char*)0);
3374 yylval.ival = OP_STRINGIFY;
3375 if (SvIVX(lex_stuff) == '\'')
3376 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3377 TERM(sublex_start());
3382 missingterm((char*)0);
3383 yylval.ival = OP_BACKTICK;
3385 TERM(sublex_start());
3392 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3393 if (isIDFIRST(*tokenbuf))
3394 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3396 yyerror("<> should be quotes");
3403 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3407 LOP(OP_RENAME,XTERM);
3416 LOP(OP_RINDEX,XTERM);
3439 LOP(OP_REVERSE,XTERM);
3450 TERM(sublex_start());
3452 TOKEN(1); /* force error */
3461 LOP(OP_SELECT,XTERM);
3467 LOP(OP_SEMCTL,XTERM);
3470 LOP(OP_SEMGET,XTERM);
3473 LOP(OP_SEMOP,XTERM);
3479 LOP(OP_SETPGRP,XTERM);
3481 case KEY_setpriority:
3482 LOP(OP_SETPRIORITY,XTERM);
3484 case KEY_sethostent:
3490 case KEY_setservent:
3493 case KEY_setprotoent:
3503 LOP(OP_SEEKDIR,XTERM);
3505 case KEY_setsockopt:
3506 LOP(OP_SSOCKOPT,XTERM);
3512 LOP(OP_SHMCTL,XTERM);
3515 LOP(OP_SHMGET,XTERM);
3518 LOP(OP_SHMREAD,XTERM);
3521 LOP(OP_SHMWRITE,XTERM);
3524 LOP(OP_SHUTDOWN,XTERM);
3533 LOP(OP_SOCKET,XTERM);
3535 case KEY_socketpair:
3536 LOP(OP_SOCKPAIR,XTERM);
3539 checkcomma(s,tokenbuf,"subroutine name");
3541 if (*s == ';' || *s == ')') /* probably a close */
3542 croak("sort is now a reserved word");
3544 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3548 LOP(OP_SPLIT,XTERM);
3551 LOP(OP_SPRINTF,XTERM);
3554 LOP(OP_SPLICE,XTERM);
3570 LOP(OP_SUBSTR,XTERM);
3577 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3578 char tmpbuf[sizeof tokenbuf];
3580 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3581 if (strchr(tmpbuf, ':'))
3582 sv_setpv(subname, tmpbuf);
3584 sv_setsv(subname,curstname);
3585 sv_catpvn(subname,"::",2);
3586 sv_catpvn(subname,tmpbuf,len);
3588 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3592 expect = XTERMBLOCK;
3593 sv_setpv(subname,"?");
3596 if (tmp == KEY_format) {
3599 lex_formbrack = lex_brackets + 1;
3603 /* Look for a prototype */
3610 SvREFCNT_dec(lex_stuff);
3612 croak("Prototype not terminated");
3615 d = SvPVX(lex_stuff);
3617 for (p = d; *p; ++p) {
3622 SvCUR(lex_stuff) = tmp;
3625 nextval[1] = nextval[0];
3626 nexttype[1] = nexttype[0];
3627 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3628 nexttype[0] = THING;
3629 if (nexttoke == 1) {
3630 lex_defer = lex_state;
3631 lex_expect = expect;
3632 lex_state = LEX_KNOWNEXT;
3637 if (*SvPV(subname,na) == '?') {
3638 sv_setpv(subname,"__ANON__");
3645 LOP(OP_SYSTEM,XREF);
3648 LOP(OP_SYMLINK,XTERM);
3651 LOP(OP_SYSCALL,XTERM);
3654 LOP(OP_SYSOPEN,XTERM);
3657 LOP(OP_SYSSEEK,XTERM);
3660 LOP(OP_SYSREAD,XTERM);
3663 LOP(OP_SYSWRITE,XTERM);
3667 TERM(sublex_start());
3688 LOP(OP_TRUNCATE,XTERM);
3700 yylval.ival = curcop->cop_line;
3704 yylval.ival = curcop->cop_line;
3708 LOP(OP_UNLINK,XTERM);
3714 LOP(OP_UNPACK,XTERM);
3717 LOP(OP_UTIME,XTERM);
3721 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3722 if (*d != '0' && isDIGIT(*d))
3723 yywarn("umask: argument is missing initial 0");
3728 LOP(OP_UNSHIFT,XTERM);
3731 if (expect != XSTATE)
3732 yyerror("\"use\" not allowed in expression");
3735 s = force_version(s);
3736 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3737 nextval[nexttoke].opval = Nullop;
3742 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3743 s = force_version(s);
3756 yylval.ival = curcop->cop_line;
3760 hints |= HINT_BLOCK_SCOPE;
3767 LOP(OP_WAITPID,XTERM);
3773 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3777 if (expect == XOPERATOR)
3783 yylval.ival = OP_XOR;
3788 TERM(sublex_start());
3801 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3802 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3803 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3804 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3805 if (strEQ(d,"__END__")) return KEY___END__;
3809 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3814 if (strEQ(d,"and")) return -KEY_and;
3815 if (strEQ(d,"abs")) return -KEY_abs;
3818 if (strEQ(d,"alarm")) return -KEY_alarm;
3819 if (strEQ(d,"atan2")) return -KEY_atan2;
3822 if (strEQ(d,"accept")) return -KEY_accept;
3827 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3830 if (strEQ(d,"bless")) return -KEY_bless;
3831 if (strEQ(d,"bind")) return -KEY_bind;
3832 if (strEQ(d,"binmode")) return -KEY_binmode;
3835 if (strEQ(d,"CORE")) return -KEY_CORE;
3840 if (strEQ(d,"cmp")) return -KEY_cmp;
3841 if (strEQ(d,"chr")) return -KEY_chr;
3842 if (strEQ(d,"cos")) return -KEY_cos;
3845 if (strEQ(d,"chop")) return KEY_chop;
3848 if (strEQ(d,"close")) return -KEY_close;
3849 if (strEQ(d,"chdir")) return -KEY_chdir;
3850 if (strEQ(d,"chomp")) return KEY_chomp;
3851 if (strEQ(d,"chmod")) return -KEY_chmod;
3852 if (strEQ(d,"chown")) return -KEY_chown;
3853 if (strEQ(d,"crypt")) return -KEY_crypt;
3856 if (strEQ(d,"chroot")) return -KEY_chroot;
3857 if (strEQ(d,"caller")) return -KEY_caller;
3860 if (strEQ(d,"connect")) return -KEY_connect;
3863 if (strEQ(d,"closedir")) return -KEY_closedir;
3864 if (strEQ(d,"continue")) return -KEY_continue;
3869 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3874 if (strEQ(d,"do")) return KEY_do;
3877 if (strEQ(d,"die")) return -KEY_die;
3880 if (strEQ(d,"dump")) return -KEY_dump;
3883 if (strEQ(d,"delete")) return KEY_delete;
3886 if (strEQ(d,"defined")) return KEY_defined;
3887 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3890 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3895 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3896 if (strEQ(d,"END")) return KEY_END;
3901 if (strEQ(d,"eq")) return -KEY_eq;
3904 if (strEQ(d,"eof")) return -KEY_eof;
3905 if (strEQ(d,"exp")) return -KEY_exp;
3908 if (strEQ(d,"else")) return KEY_else;
3909 if (strEQ(d,"exit")) return -KEY_exit;
3910 if (strEQ(d,"eval")) return KEY_eval;
3911 if (strEQ(d,"exec")) return -KEY_exec;
3912 if (strEQ(d,"each")) return KEY_each;
3915 if (strEQ(d,"elsif")) return KEY_elsif;
3918 if (strEQ(d,"exists")) return KEY_exists;
3919 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3922 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3923 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3926 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3929 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3930 if (strEQ(d,"endservent")) return -KEY_endservent;
3933 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3940 if (strEQ(d,"for")) return KEY_for;
3943 if (strEQ(d,"fork")) return -KEY_fork;
3946 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3947 if (strEQ(d,"flock")) return -KEY_flock;
3950 if (strEQ(d,"format")) return KEY_format;
3951 if (strEQ(d,"fileno")) return -KEY_fileno;
3954 if (strEQ(d,"foreach")) return KEY_foreach;
3957 if (strEQ(d,"formline")) return -KEY_formline;
3963 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3964 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3968 if (strnEQ(d,"get",3)) {
3973 if (strEQ(d,"ppid")) return -KEY_getppid;
3974 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3977 if (strEQ(d,"pwent")) return -KEY_getpwent;
3978 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3979 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3982 if (strEQ(d,"peername")) return -KEY_getpeername;
3983 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3984 if (strEQ(d,"priority")) return -KEY_getpriority;
3987 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3990 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3994 else if (*d == 'h') {
3995 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3996 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3997 if (strEQ(d,"hostent")) return -KEY_gethostent;
3999 else if (*d == 'n') {
4000 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
4001 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
4002 if (strEQ(d,"netent")) return -KEY_getnetent;
4004 else if (*d == 's') {
4005 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
4006 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
4007 if (strEQ(d,"servent")) return -KEY_getservent;
4008 if (strEQ(d,"sockname")) return -KEY_getsockname;
4009 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
4011 else if (*d == 'g') {
4012 if (strEQ(d,"grent")) return -KEY_getgrent;
4013 if (strEQ(d,"grnam")) return -KEY_getgrnam;
4014 if (strEQ(d,"grgid")) return -KEY_getgrgid;
4016 else if (*d == 'l') {
4017 if (strEQ(d,"login")) return -KEY_getlogin;
4019 else if (strEQ(d,"c")) return -KEY_getc;
4024 if (strEQ(d,"gt")) return -KEY_gt;
4025 if (strEQ(d,"ge")) return -KEY_ge;
4028 if (strEQ(d,"grep")) return KEY_grep;
4029 if (strEQ(d,"goto")) return KEY_goto;
4030 if (strEQ(d,"glob")) return KEY_glob;
4033 if (strEQ(d,"gmtime")) return -KEY_gmtime;
4038 if (strEQ(d,"hex")) return -KEY_hex;
4041 if (strEQ(d,"INIT")) return KEY_INIT;
4046 if (strEQ(d,"if")) return KEY_if;
4049 if (strEQ(d,"int")) return -KEY_int;
4052 if (strEQ(d,"index")) return -KEY_index;
4053 if (strEQ(d,"ioctl")) return -KEY_ioctl;
4058 if (strEQ(d,"join")) return -KEY_join;
4062 if (strEQ(d,"keys")) return KEY_keys;
4063 if (strEQ(d,"kill")) return -KEY_kill;
4068 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4069 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4075 if (strEQ(d,"lt")) return -KEY_lt;
4076 if (strEQ(d,"le")) return -KEY_le;
4077 if (strEQ(d,"lc")) return -KEY_lc;
4080 if (strEQ(d,"log")) return -KEY_log;
4083 if (strEQ(d,"last")) return KEY_last;
4084 if (strEQ(d,"link")) return -KEY_link;
4085 if (strEQ(d,"lock")) return -KEY_lock;
4088 if (strEQ(d,"local")) return KEY_local;
4089 if (strEQ(d,"lstat")) return -KEY_lstat;
4092 if (strEQ(d,"length")) return -KEY_length;
4093 if (strEQ(d,"listen")) return -KEY_listen;
4096 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4099 if (strEQ(d,"localtime")) return -KEY_localtime;
4105 case 1: return KEY_m;
4107 if (strEQ(d,"my")) return KEY_my;
4110 if (strEQ(d,"map")) return KEY_map;
4113 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4116 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4117 if (strEQ(d,"msgget")) return -KEY_msgget;
4118 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4119 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4124 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4127 if (strEQ(d,"next")) return KEY_next;
4128 if (strEQ(d,"ne")) return -KEY_ne;
4129 if (strEQ(d,"not")) return -KEY_not;
4130 if (strEQ(d,"no")) return KEY_no;
4135 if (strEQ(d,"or")) return -KEY_or;
4138 if (strEQ(d,"ord")) return -KEY_ord;
4139 if (strEQ(d,"oct")) return -KEY_oct;
4142 if (strEQ(d,"open")) return -KEY_open;
4145 if (strEQ(d,"opendir")) return -KEY_opendir;
4152 if (strEQ(d,"pop")) return KEY_pop;
4153 if (strEQ(d,"pos")) return KEY_pos;
4156 if (strEQ(d,"push")) return KEY_push;
4157 if (strEQ(d,"pack")) return -KEY_pack;
4158 if (strEQ(d,"pipe")) return -KEY_pipe;
4161 if (strEQ(d,"print")) return KEY_print;
4164 if (strEQ(d,"printf")) return KEY_printf;
4167 if (strEQ(d,"package")) return KEY_package;
4170 if (strEQ(d,"prototype")) return KEY_prototype;
4175 if (strEQ(d,"q")) return KEY_q;
4176 if (strEQ(d,"qq")) return KEY_qq;
4177 if (strEQ(d,"qw")) return KEY_qw;
4178 if (strEQ(d,"qx")) return KEY_qx;
4180 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4185 if (strEQ(d,"ref")) return -KEY_ref;
4188 if (strEQ(d,"read")) return -KEY_read;
4189 if (strEQ(d,"rand")) return -KEY_rand;
4190 if (strEQ(d,"recv")) return -KEY_recv;
4191 if (strEQ(d,"redo")) return KEY_redo;
4194 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4195 if (strEQ(d,"reset")) return -KEY_reset;
4198 if (strEQ(d,"return")) return KEY_return;
4199 if (strEQ(d,"rename")) return -KEY_rename;
4200 if (strEQ(d,"rindex")) return -KEY_rindex;
4203 if (strEQ(d,"require")) return -KEY_require;
4204 if (strEQ(d,"reverse")) return -KEY_reverse;
4205 if (strEQ(d,"readdir")) return -KEY_readdir;
4208 if (strEQ(d,"readlink")) return -KEY_readlink;
4209 if (strEQ(d,"readline")) return -KEY_readline;
4210 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4213 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4219 case 0: return KEY_s;
4221 if (strEQ(d,"scalar")) return KEY_scalar;
4226 if (strEQ(d,"seek")) return -KEY_seek;
4227 if (strEQ(d,"send")) return -KEY_send;
4230 if (strEQ(d,"semop")) return -KEY_semop;
4233 if (strEQ(d,"select")) return -KEY_select;
4234 if (strEQ(d,"semctl")) return -KEY_semctl;
4235 if (strEQ(d,"semget")) return -KEY_semget;
4238 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4239 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4242 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4243 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4246 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4249 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4250 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4251 if (strEQ(d,"setservent")) return -KEY_setservent;
4254 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4255 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4262 if (strEQ(d,"shift")) return KEY_shift;
4265 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4266 if (strEQ(d,"shmget")) return -KEY_shmget;
4269 if (strEQ(d,"shmread")) return -KEY_shmread;
4272 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4273 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4278 if (strEQ(d,"sin")) return -KEY_sin;
4281 if (strEQ(d,"sleep")) return -KEY_sleep;
4284 if (strEQ(d,"sort")) return KEY_sort;
4285 if (strEQ(d,"socket")) return -KEY_socket;
4286 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4289 if (strEQ(d,"split")) return KEY_split;
4290 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4291 if (strEQ(d,"splice")) return KEY_splice;
4294 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4297 if (strEQ(d,"srand")) return -KEY_srand;
4300 if (strEQ(d,"stat")) return -KEY_stat;
4301 if (strEQ(d,"study")) return KEY_study;
4304 if (strEQ(d,"substr")) return -KEY_substr;
4305 if (strEQ(d,"sub")) return KEY_sub;
4310 if (strEQ(d,"system")) return -KEY_system;
4313 if (strEQ(d,"symlink")) return -KEY_symlink;
4314 if (strEQ(d,"syscall")) return -KEY_syscall;
4315 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4316 if (strEQ(d,"sysread")) return -KEY_sysread;
4317 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4320 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4329 if (strEQ(d,"tr")) return KEY_tr;
4332 if (strEQ(d,"tie")) return KEY_tie;
4335 if (strEQ(d,"tell")) return -KEY_tell;
4336 if (strEQ(d,"tied")) return KEY_tied;
4337 if (strEQ(d,"time")) return -KEY_time;
4340 if (strEQ(d,"times")) return -KEY_times;
4343 if (strEQ(d,"telldir")) return -KEY_telldir;
4346 if (strEQ(d,"truncate")) return -KEY_truncate;
4353 if (strEQ(d,"uc")) return -KEY_uc;
4356 if (strEQ(d,"use")) return KEY_use;
4359 if (strEQ(d,"undef")) return KEY_undef;
4360 if (strEQ(d,"until")) return KEY_until;
4361 if (strEQ(d,"untie")) return KEY_untie;
4362 if (strEQ(d,"utime")) return -KEY_utime;
4363 if (strEQ(d,"umask")) return -KEY_umask;
4366 if (strEQ(d,"unless")) return KEY_unless;
4367 if (strEQ(d,"unpack")) return -KEY_unpack;
4368 if (strEQ(d,"unlink")) return -KEY_unlink;
4371 if (strEQ(d,"unshift")) return KEY_unshift;
4372 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4377 if (strEQ(d,"values")) return -KEY_values;
4378 if (strEQ(d,"vec")) return -KEY_vec;
4383 if (strEQ(d,"warn")) return -KEY_warn;
4384 if (strEQ(d,"wait")) return -KEY_wait;
4387 if (strEQ(d,"while")) return KEY_while;
4388 if (strEQ(d,"write")) return -KEY_write;
4391 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4394 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4399 if (len == 1) return -KEY_x;
4400 if (strEQ(d,"xor")) return -KEY_xor;
4403 if (len == 1) return KEY_y;
4412 checkcomma(s,name,what)
4419 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4421 for (w = s+2; *w && level; w++) {
4428 for (; *w && isSPACE(*w); w++) ;
4429 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4430 warn("%s (...) interpreted as function",name);
4432 while (s < bufend && isSPACE(*s))
4436 while (s < bufend && isSPACE(*s))
4438 if (isIDFIRST(*s)) {
4442 while (s < bufend && isSPACE(*s))
4447 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4451 croak("No comma allowed after %s", what);
4457 scan_word(s, dest, destlen, allow_package, slp)
4464 register char *d = dest;
4465 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4468 croak(ident_too_long);
4471 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4476 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4489 scan_ident(s, send, dest, destlen, ck_uni)
4491 register char *send;
4501 if (lex_brackets == 0)
4506 e = d + destlen - 3; /* two-character token, ending NUL */
4508 while (isDIGIT(*s)) {
4510 croak(ident_too_long);
4517 croak(ident_too_long);
4520 else if (*s == '\'' && isIDFIRST(s[1])) {
4525 else if (*s == ':' && s[1] == ':') {
4536 if (lex_state != LEX_NORMAL)
4537 lex_state = LEX_INTERPENDMAYBE;
4540 if (*s == '$' && s[1] &&
4541 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4543 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4544 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4557 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4562 if (isSPACE(s[-1])) {
4565 if (ch != ' ' && ch != '\t') {
4571 if (isIDFIRST(*d)) {
4573 while (isALNUM(*s) || *s == ':')
4576 while (s < send && (*s == ' ' || *s == '\t')) s++;
4577 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4578 if (dowarn && keyword(dest, d - dest)) {
4579 char *brack = *s == '[' ? "[...]" : "{...}";
4580 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4581 funny, dest, brack, funny, dest, brack);
4583 lex_fakebrack = lex_brackets+1;
4585 lex_brackstack[lex_brackets++] = XOPERATOR;
4591 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4592 lex_state = LEX_INTERPEND;
4595 if (dowarn && lex_state == LEX_NORMAL &&
4596 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4597 warn("Ambiguous use of %c{%s} resolved to %c%s",
4598 funny, dest, funny, dest);
4601 s = bracket; /* let the parser handle it */
4605 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4606 lex_state = LEX_INTERPEND;
4610 void pmflag(pmfl,ch)
4617 *pmfl |= PMf_GLOBAL;
4619 *pmfl |= PMf_CONTINUE;
4623 *pmfl |= PMf_MULTILINE;
4625 *pmfl |= PMf_SINGLELINE;
4627 *pmfl |= PMf_EXTENDED;
4637 s = scan_str(start);
4640 SvREFCNT_dec(lex_stuff);
4642 croak("Search pattern not terminated");
4645 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4646 if (multi_open == '?')
4647 pm->op_pmflags |= PMf_ONCE;
4648 while (*s && strchr("iogcmsx", *s))
4649 pmflag(&pm->op_pmflags,*s++);
4650 pm->op_pmpermflags = pm->op_pmflags;
4653 yylval.ival = OP_MATCH;
4666 yylval.ival = OP_NULL;
4668 s = scan_str(start);
4672 SvREFCNT_dec(lex_stuff);
4674 croak("Substitution pattern not terminated");
4677 if (s[-1] == multi_open)
4680 first_start = multi_start;
4684 SvREFCNT_dec(lex_stuff);
4687 SvREFCNT_dec(lex_repl);
4689 croak("Substitution replacement not terminated");
4691 multi_start = first_start; /* so whole substitution is taken together */
4693 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4694 while (*s && strchr("iogcmsex", *s)) {
4700 pmflag(&pm->op_pmflags,*s++);
4705 pm->op_pmflags |= PMf_EVAL;
4706 repl = newSVpv("",0);
4708 sv_catpv(repl, es ? "eval " : "do ");
4709 sv_catpvn(repl, "{ ", 2);
4710 sv_catsv(repl, lex_repl);
4711 sv_catpvn(repl, " };", 2);
4712 SvCOMPILED_on(repl);
4713 SvREFCNT_dec(lex_repl);
4717 pm->op_pmpermflags = pm->op_pmflags;
4719 yylval.ival = OP_SUBST;
4728 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4729 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4731 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4732 pm->op_pmflags |= PMf_SCANFIRST;
4733 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4734 pm->op_pmslen = SvCUR(pm->op_pmshort);
4736 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4737 if (pm->op_pmshort &&
4738 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4740 if (pm->op_pmflags & PMf_SCANFIRST) {
4741 SvREFCNT_dec(pm->op_pmshort);
4742 pm->op_pmshort = Nullsv;
4745 SvREFCNT_dec(pm->op_pmregexp->regmust);
4746 pm->op_pmregexp->regmust = Nullsv;
4750 /* promote the better string */
4751 if ((!pm->op_pmshort &&
4752 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4753 ((pm->op_pmflags & PMf_SCANFIRST) &&
4754 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4755 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4756 pm->op_pmshort = pm->op_pmregexp->regmust;
4757 pm->op_pmslen = SvCUR(pm->op_pmshort);
4758 pm->op_pmregexp->regmust = Nullsv;
4759 pm->op_pmflags |= PMf_SCANFIRST;
4775 yylval.ival = OP_NULL;
4777 s = scan_str(start);
4780 SvREFCNT_dec(lex_stuff);
4782 croak("Translation pattern not terminated");
4784 if (s[-1] == multi_open)
4790 SvREFCNT_dec(lex_stuff);
4793 SvREFCNT_dec(lex_repl);
4795 croak("Translation replacement not terminated");
4798 New(803,tbl,256,short);
4799 o = newPVOP(OP_TRANS, 0, (char*)tbl);
4801 complement = delete = squash = 0;
4802 while (*s == 'c' || *s == 'd' || *s == 's') {
4804 complement = OPpTRANS_COMPLEMENT;
4806 delete = OPpTRANS_DELETE;
4808 squash = OPpTRANS_SQUASH;
4811 o->op_private = delete|squash|complement;
4814 yylval.ival = OP_TRANS;
4824 I32 op_type = OP_SCALAR;
4831 int outer = (rsfp && !lex_inwhat);
4835 e = tokenbuf + sizeof tokenbuf - 1;
4838 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4839 if (*peek && strchr("`'\"",*peek)) {
4842 s = delimcpy(d, e, s, bufend, term, &len);
4853 deprecate("bare << to mean <<\"\"");
4854 for (; isALNUM(*s); s++) {
4859 if (d >= tokenbuf + sizeof tokenbuf - 1)
4860 croak("Delimiter for here document is too long");
4865 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4866 herewas = newSVpv(s,bufend-s);
4868 s--, herewas = newSVpv(s,d-s);
4869 s += SvCUR(herewas);
4871 tmpstr = NEWSV(87,80);
4872 sv_upgrade(tmpstr, SVt_PVIV);
4877 else if (term == '`') {
4878 op_type = OP_BACKTICK;
4879 SvIVX(tmpstr) = '\\';
4883 multi_start = curcop->cop_line;
4884 multi_open = multi_close = '<';
4888 while (s < bufend &&
4889 (*s != term || memNE(s,tokenbuf,len)) ) {
4894 curcop->cop_line = multi_start;
4895 missingterm(tokenbuf);
4897 sv_setpvn(tmpstr,d+1,s-d);
4899 sv_catpvn(herewas,s,bufend-s);
4900 sv_setsv(linestr,herewas);
4901 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4902 bufend = SvPVX(linestr) + SvCUR(linestr);
4905 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4906 while (s >= bufend) { /* multiple line string? */
4908 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4909 curcop->cop_line = multi_start;
4910 missingterm(tokenbuf);
4913 if (PERLDB_LINE && curstash != debstash) {
4914 SV *sv = NEWSV(88,0);
4916 sv_upgrade(sv, SVt_PVMG);
4917 sv_setsv(sv,linestr);
4918 av_store(GvAV(curcop->cop_filegv),
4919 (I32)curcop->cop_line,sv);
4921 bufend = SvPVX(linestr) + SvCUR(linestr);
4922 if (*s == term && memEQ(s,tokenbuf,len)) {
4925 sv_catsv(linestr,herewas);
4926 bufend = SvPVX(linestr) + SvCUR(linestr);
4930 sv_catsv(tmpstr,linestr);
4933 multi_end = curcop->cop_line;
4935 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4936 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4937 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4939 SvREFCNT_dec(herewas);
4941 yylval.ival = op_type;
4946 scan_inputsymbol(start)
4949 register char *s = start;
4955 e = tokenbuf + sizeof tokenbuf;
4956 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4957 if (len >= sizeof tokenbuf)
4958 croak("Excessively long <> operator");
4960 croak("Unterminated <> operator");
4962 if (*d == '$' && d[1]) d++;
4963 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4965 if (d - tokenbuf != len) {
4966 yylval.ival = OP_GLOB;
4968 s = scan_str(start);
4970 croak("Glob not terminated");
4976 (void)strcpy(d,"ARGV");
4979 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4980 OP *o = newOP(OP_PADSV, 0);
4982 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
4985 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4986 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4987 newUNOP(OP_RV2GV, 0,
4988 newUNOP(OP_RV2SV, 0,
4989 newGVOP(OP_GV, 0, gv))));
4991 yylval.ival = OP_NULL;
4994 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4995 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4996 yylval.ival = OP_NULL;
5009 register char *s = start;
5018 multi_start = curcop->cop_line;
5020 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
5025 sv_upgrade(sv, SVt_PVIV);
5027 (void)SvPOK_only(sv); /* validate pointer */
5030 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
5031 to = SvPVX(sv)+SvCUR(sv);
5032 if (multi_open == multi_close) {
5033 for (; s < bufend; s++,to++) {
5034 if (*s == '\n' && !rsfp)
5036 if (*s == '\\' && s+1 < bufend && term != '\\') {
5042 else if (*s == term)
5048 for (; s < bufend; s++,to++) {
5049 if (*s == '\n' && !rsfp)
5051 if (*s == '\\' && s+1 < bufend) {
5052 if ((s[1] == multi_open) || (s[1] == multi_close))
5057 else if (*s == multi_close && --brackets <= 0)
5059 else if (*s == multi_open)
5065 SvCUR_set(sv, to - SvPVX(sv));
5067 if (s < bufend) break; /* string ends on this line? */
5070 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5072 curcop->cop_line = multi_start;
5076 if (PERLDB_LINE && curstash != debstash) {
5077 SV *sv = NEWSV(88,0);
5079 sv_upgrade(sv, SVt_PVMG);
5080 sv_setsv(sv,linestr);
5081 av_store(GvAV(curcop->cop_filegv),
5082 (I32)curcop->cop_line, sv);
5084 bufend = SvPVX(linestr) + SvCUR(linestr);
5086 multi_end = curcop->cop_line;
5088 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5089 SvLEN_set(sv, SvCUR(sv) + 1);
5090 Renew(SvPVX(sv), SvLEN(sv), char);
5103 register char *s = start;
5111 static char number_too_long[] = "Number too long";
5115 croak("panic: scan_num");
5120 bool overflowed = FALSE;
5126 else if (s[1] == '.')
5142 yyerror("Illegal octal digit");
5144 case '0': case '1': case '2': case '3': case '4':
5145 case '5': case '6': case '7':
5148 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5149 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5155 if (!overflowed && (n >> shift) != u) {
5156 warn("Integer overflow in %s number",
5157 (shift == 4) ? "hex" : "octal");
5169 case '1': case '2': case '3': case '4': case '5':
5170 case '6': case '7': case '8': case '9': case '.':
5173 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5175 while (isDIGIT(*s) || *s == '_') {
5177 if (dowarn && lastub && s - lastub != 3)
5178 warn("Misplaced _ in number");
5183 croak(number_too_long);
5187 if (dowarn && lastub && s - lastub != 3)
5188 warn("Misplaced _ in number");
5189 if (*s == '.' && s[1] != '.') {
5192 for (; isDIGIT(*s) || *s == '_'; s++) {
5194 croak(number_too_long);
5199 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5202 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5203 if (*s == '+' || *s == '-')
5205 while (isDIGIT(*s)) {
5207 croak(number_too_long);
5213 SET_NUMERIC_STANDARD();
5214 value = atof(tokenbuf);
5216 if (!floatit && (double)tryiv == value)
5217 sv_setiv(sv, tryiv);
5219 sv_setnv(sv, value);
5223 yylval.opval = newSVOP(OP_CONST, 0, sv);
5235 SV *stuff = newSVpv("",0);
5236 bool needargs = FALSE;
5239 if (*s == '.' || *s == '}') {
5241 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5245 if (in_eval && !rsfp) {
5246 eol = strchr(s,'\n');
5251 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5253 for (t = s; t < eol; t++) {
5254 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5256 goto enough; /* ~~ must be first line in formline */
5258 if (*t == '@' || *t == '^')
5261 sv_catpvn(stuff, s, eol-s);
5265 s = filter_gets(linestr, rsfp, 0);
5266 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5267 bufend = bufptr + SvCUR(linestr);
5270 yyerror("Format not terminated");
5280 lex_state = LEX_NORMAL;
5281 nextval[nexttoke].ival = 0;
5285 lex_state = LEX_FORMLINE;
5286 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5288 nextval[nexttoke].ival = OP_FORMLINE;
5292 SvREFCNT_dec(stuff);
5304 cshlen = strlen(cshname);
5309 start_subparse(is_format, flags)
5314 I32 oldsavestack_ix = savestack_ix;
5315 CV* outsidecv = compcv;
5319 assert(SvTYPE(compcv) == SVt_PVCV);
5326 SAVESPTR(comppad_name);
5328 SAVEI32(comppad_name_fill);
5329 SAVEI32(min_intro_pending);
5330 SAVEI32(max_intro_pending);
5331 SAVEI32(pad_reset_pending);
5333 compcv = (CV*)NEWSV(1104,0);
5334 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5335 CvFLAGS(compcv) |= flags;
5338 av_push(comppad, Nullsv);
5339 curpad = AvARRAY(comppad);
5340 comppad_name = newAV();
5341 comppad_name_fill = 0;
5342 min_intro_pending = 0;
5344 subline = curcop->cop_line;
5346 av_store(comppad_name, 0, newSVpv("@_", 2));
5347 curpad[0] = (SV*)newAV();
5348 SvPADMY_on(curpad[0]); /* XXX Needed? */
5349 CvOWNER(compcv) = 0;
5350 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5351 MUTEX_INIT(CvMUTEXP(compcv));
5352 #endif /* USE_THREADS */
5354 comppadlist = newAV();
5355 AvREAL_off(comppadlist);
5356 av_store(comppadlist, 0, (SV*)comppad_name);
5357 av_store(comppadlist, 1, (SV*)comppad);
5359 CvPADLIST(compcv) = comppadlist;
5360 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc(outsidecv);
5362 CvOWNER(compcv) = 0;
5363 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5364 MUTEX_INIT(CvMUTEXP(compcv));
5365 #endif /* USE_THREADS */
5367 return oldsavestack_ix;
5388 char *context = NULL;
5392 if (!yychar || (yychar == ';' && !rsfp))
5394 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5395 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5396 while (isSPACE(*oldoldbufptr))
5398 context = oldoldbufptr;
5399 contlen = bufptr - oldoldbufptr;
5401 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5402 oldbufptr != bufptr) {
5403 while (isSPACE(*oldbufptr))
5405 context = oldbufptr;
5406 contlen = bufptr - oldbufptr;
5408 else if (yychar > 255)
5409 where = "next token ???";
5410 else if ((yychar & 127) == 127) {
5411 if (lex_state == LEX_NORMAL ||
5412 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5413 where = "at end of line";
5415 where = "within pattern";
5417 where = "within string";
5420 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5422 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5423 else if (isPRINT_LC(yychar))
5424 sv_catpvf(where_sv, "%c", yychar);
5426 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5427 where = SvPVX(where_sv);
5429 msg = sv_2mortal(newSVpv(s, 0));
5430 sv_catpvf(msg, " at %_ line %ld, ",
5431 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5433 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5435 sv_catpvf(msg, "%s\n", where);
5436 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5438 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5439 (int)multi_open,(int)multi_close,(long)multi_start);
5445 sv_catsv(errsv, msg);
5447 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5448 if (++error_count >= 10)
5449 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
5451 in_my_stash = Nullhv;