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");
235 SAVEI32(lex_brackets);
236 SAVEI32(lex_fakebrack);
237 SAVEI32(lex_casemods);
242 SAVEI16(curcop->cop_line);
246 SAVEPPTR(oldoldbufptr);
249 SAVEPPTR(lex_brackstack);
250 SAVEPPTR(lex_casestack);
251 SAVEDESTRUCTOR(restore_rsfp, rsfp);
253 lex_state = LEX_NORMAL;
258 New(899, lex_brackstack, 120, char);
259 New(899, lex_casestack, 12, char);
260 SAVEFREEPV(lex_brackstack);
261 SAVEFREEPV(lex_casestack);
263 *lex_casestack = '\0';
267 SvREFCNT_dec(lex_stuff);
270 SvREFCNT_dec(lex_repl);
275 if (SvREADONLY(linestr))
276 linestr = sv_2mortal(newSVsv(linestr));
277 s = SvPV(linestr, len);
278 if (len && s[len-1] != ';') {
279 if (!(SvFLAGS(linestr) & SVs_TEMP))
280 linestr = sv_2mortal(newSVsv(linestr));
281 sv_catpvn(linestr, "\n;", 2);
284 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
285 bufend = bufptr + SvCUR(linestr);
287 rs = newSVpv("\n", 1);
301 PerlIO *fp = (PerlIO*)f;
303 if (rsfp == PerlIO_stdin())
304 PerlIO_clearerr(rsfp);
305 else if (rsfp && (rsfp != fp))
322 while (*s == ' ' || *s == '\t') s++;
323 if (strnEQ(s, "line ", 5)) {
332 while (*s == ' ' || *s == '\t')
334 if (*s == '"' && (t = strchr(s+1, '"')))
338 return; /* false alarm */
339 for (t = s; !isSPACE(*t); t++) ;
344 curcop->cop_filegv = gv_fetchfile(s);
346 curcop->cop_filegv = gv_fetchfile(origfilename);
348 curcop->cop_line = atoi(n)-1;
355 if (lex_formbrack && lex_brackets <= lex_formbrack) {
356 while (s < bufend && (*s == ' ' || *s == '\t'))
362 while (s < bufend && isSPACE(*s))
364 if (s < bufend && *s == '#') {
365 while (s < bufend && *s != '\n')
370 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
372 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
373 if (minus_n || minus_p) {
374 sv_setpv(linestr,minus_p ?
375 ";}continue{print or die qq(-p destination: $!\\n)" :
377 sv_catpv(linestr,";}");
378 minus_n = minus_p = 0;
381 sv_setpv(linestr,";");
382 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
383 bufend = SvPVX(linestr) + SvCUR(linestr);
384 if (preprocess && !in_eval)
385 (void)my_pclose(rsfp);
386 else if ((PerlIO*)rsfp == PerlIO_stdin())
387 PerlIO_clearerr(rsfp);
389 (void)PerlIO_close(rsfp);
395 linestart = bufptr = s + prevlen;
396 bufend = s + SvCUR(linestr);
399 if (PERLDB_LINE && curstash != debstash) {
400 SV *sv = NEWSV(85,0);
402 sv_upgrade(sv, SVt_PVMG);
403 sv_setpvn(sv,bufptr,bufend-bufptr);
404 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
415 if (oldoldbufptr != last_uni)
417 while (isSPACE(*last_uni))
419 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
420 if ((t = strchr(s, '(')) && t < bufptr)
424 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
431 #define UNI(f) return uni(f,s)
441 last_uni = oldbufptr;
452 #endif /* CRIPPLED_CC */
454 #define LOP(f,x) return lop(f,x,s)
459 (I32 f, expectation x, char *s)
465 #endif /* CAN_PROTOTYPE */
471 last_lop = oldbufptr;
488 nexttype[nexttoke] = type;
490 if (lex_state != LEX_KNOWNEXT) {
491 lex_defer = lex_state;
493 lex_state = LEX_KNOWNEXT;
498 force_word(start,token,check_keyword,allow_pack,allow_tick)
499 register char *start;
508 start = skipspace(start);
511 (allow_pack && *s == ':') ||
512 (allow_tick && *s == '\'') )
514 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
515 if (check_keyword && keyword(tokenbuf, len))
517 if (token == METHOD) {
527 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
528 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
540 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
541 nextval[nexttoke].opval = op;
544 op->op_private = OPpCONST_ENTERED;
545 /* XXX see note in pp_entereval() for why we forgo typo
546 warnings if the symbol must be introduced in an eval.
548 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
549 kind == '$' ? SVt_PV :
550 kind == '@' ? SVt_PVAV :
551 kind == '%' ? SVt_PVHV :
562 OP *version = Nullop;
566 /* default VERSION number -- GBARR */
571 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
572 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
574 /* real VERSION number -- GBARR */
575 version = yylval.opval;
579 /* NOTE: The parser sees the package name and the VERSION swapped */
580 nextval[nexttoke].opval = version;
598 s = SvPV_force(sv, len);
602 while (s < send && *s != '\\')
609 if (s + 1 < send && (s[1] == '\\'))
610 s++; /* all that, just for this */
615 SvCUR_set(sv, d - SvPVX(sv));
623 register I32 op_type = yylval.ival;
625 if (op_type == OP_NULL) {
626 yylval.opval = lex_op;
630 if (op_type == OP_CONST || op_type == OP_READLINE) {
631 SV *sv = q(lex_stuff);
633 char *p = SvPV(sv, len);
634 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
640 sublex_info.super_state = lex_state;
641 sublex_info.sub_inwhat = op_type;
642 sublex_info.sub_op = lex_op;
643 lex_state = LEX_INTERPPUSH;
647 yylval.opval = lex_op;
660 lex_state = sublex_info.super_state;
662 SAVEI32(lex_brackets);
663 SAVEI32(lex_fakebrack);
664 SAVEI32(lex_casemods);
669 SAVEI16(curcop->cop_line);
672 SAVEPPTR(oldoldbufptr);
675 SAVEPPTR(lex_brackstack);
676 SAVEPPTR(lex_casestack);
681 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
682 bufend += SvCUR(linestr);
688 New(899, lex_brackstack, 120, char);
689 New(899, lex_casestack, 12, char);
690 SAVEFREEPV(lex_brackstack);
691 SAVEFREEPV(lex_casestack);
693 *lex_casestack = '\0';
695 lex_state = LEX_INTERPCONCAT;
696 curcop->cop_line = multi_start;
698 lex_inwhat = sublex_info.sub_inwhat;
699 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
700 lex_inpat = sublex_info.sub_op;
712 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
716 if (lex_casemods) { /* oops, we've got some unbalanced parens */
717 lex_state = LEX_INTERPCASEMOD;
721 /* Is there a right-hand side to take care of? */
722 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
725 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
726 bufend += SvCUR(linestr);
732 *lex_casestack = '\0';
734 if (SvCOMPILED(lex_repl)) {
735 lex_state = LEX_INTERPNORMAL;
739 lex_state = LEX_INTERPCONCAT;
745 bufend = SvPVX(linestr);
746 bufend += SvCUR(linestr);
756 register char *send = bufend;
757 SV *sv = NEWSV(93, send - start);
758 register char *s = start;
759 register char *d = SvPVX(sv);
760 bool dorange = FALSE;
764 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
765 : (lex_inwhat & OP_TRANS)
769 while (s < send || dorange) {
770 if (lex_inwhat == OP_TRANS) {
775 SvGROW(sv, SvLEN(sv) + 256);
779 for (i = (U8)*d; i <= max; i++)
784 else if (*s == '-' && s+1 < send && s != start) {
789 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
790 while (s < send && *s != ')')
793 else if (*s == '#' && lex_inpat &&
794 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
795 while (s+1 < send && *s != '\n')
798 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
800 else if (*s == '$') {
801 if (!lex_inpat) /* not a regexp, so $ must be var */
803 if (s + 1 < send && !strchr(")| \n\t", s[1]))
804 break; /* in regexp, $ might be tail anchor */
806 if (*s == '\\' && s+1 < send) {
808 if (*s && strchr(leave, *s)) {
813 if (lex_inwhat == OP_SUBST && !lex_inpat &&
814 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
817 warn("\\%c better written as $%c", *s, *s);
821 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
827 if (lex_inwhat == OP_TRANS) {
835 case '0': case '1': case '2': case '3':
836 case '4': case '5': case '6': case '7':
837 *d++ = scan_oct(s, 3, &len);
841 *d++ = scan_hex(++s, 2, &len);
877 SvCUR_set(sv, d - SvPVX(sv));
880 if (SvCUR(sv) + 5 < SvLEN(sv)) {
881 SvLEN_set(sv, SvCUR(sv) + 1);
882 Renew(SvPVX(sv), SvLEN(sv), char);
885 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
891 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
898 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
900 if (*s != '{' && *s != '[')
905 /* In a pattern, so maybe we have {n,m}. */
922 /* On the other hand, maybe we have a character class */
925 if (*s == ']' || *s == '^')
928 int weight = 2; /* let's weigh the evidence */
930 unsigned char un_char = 0, last_un_char;
931 char *send = strchr(s,']');
932 char tmpbuf[sizeof tokenbuf * 4];
934 if (!send) /* has to be an expression */
940 else if (isDIGIT(*s)) {
942 if (isDIGIT(s[1]) && s[2] == ']')
948 for (; s < send; s++) {
949 last_un_char = un_char;
950 un_char = (unsigned char)*s;
955 weight -= seen[un_char] * 10;
957 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
958 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
963 else if (*s == '$' && s[1] &&
964 strchr("[#!%*<>()-=",s[1])) {
965 if (/*{*/ strchr("])} =",s[2]))
974 if (strchr("wds]",s[1]))
976 else if (seen['\''] || seen['"'])
978 else if (strchr("rnftbxcav",s[1]))
980 else if (isDIGIT(s[1])) {
982 while (s[1] && isDIGIT(s[1]))
992 if (strchr("aA01! ",last_un_char))
994 if (strchr("zZ79~",s[1]))
998 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
999 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1004 if (keyword(tmpbuf, d - tmpbuf))
1007 if (un_char == last_un_char + 1)
1009 weight -= seen[un_char];
1014 if (weight >= 0) /* probably a character class */
1022 intuit_method(start,gv)
1026 char *s = start + (*start == '$');
1027 char tmpbuf[sizeof tokenbuf];
1037 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1038 if (*start == '$') {
1039 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1044 return *s == '(' ? FUNCMETH : METHOD;
1046 if (!keyword(tmpbuf, len)) {
1047 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1048 if (indirgv && GvCVu(indirgv))
1050 /* filehandle or package name makes it a method */
1051 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1053 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1054 return 0; /* no assumptions -- "=>" quotes bearword */
1055 nextval[nexttoke].opval =
1056 (OP*)newSVOP(OP_CONST, 0,
1058 nextval[nexttoke].opval->op_private =
1063 return *s == '(' ? FUNCMETH : METHOD;
1073 char *pdb = getenv("PERL5DB");
1077 return "BEGIN { require 'perl5db.pl' }";
1083 /* Encoded script support. filter_add() effectively inserts a
1084 * 'pre-processing' function into the current source input stream.
1085 * Note that the filter function only applies to the current source file
1086 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1088 * The datasv parameter (which may be NULL) can be used to pass
1089 * private data to this instance of the filter. The filter function
1090 * can recover the SV using the FILTER_DATA macro and use it to
1091 * store private buffers and state information.
1093 * The supplied datasv parameter is upgraded to a PVIO type
1094 * and the IoDIRP field is used to store the function pointer.
1095 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1096 * private use must be set using malloc'd pointers.
1098 static int filter_debug = 0;
1101 filter_add(funcp, datasv)
1105 if (!funcp){ /* temporary handy debugging hack to be deleted */
1106 filter_debug = atoi((char*)datasv);
1110 rsfp_filters = newAV();
1113 if (!SvUPGRADE(datasv, SVt_PVIO))
1114 die("Can't upgrade filter_add data to SVt_PVIO");
1115 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1117 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1118 av_unshift(rsfp_filters, 1);
1119 av_store(rsfp_filters, 0, datasv) ;
1124 /* Delete most recently added instance of this filter function. */
1130 warn("filter_del func %p", funcp);
1131 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1133 /* if filter is on top of stack (usual case) just pop it off */
1134 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1135 /* sv_free(av_pop(rsfp_filters)); */
1136 sv_free(av_shift(rsfp_filters));
1140 /* we need to search for the correct entry and clear it */
1141 die("filter_del can only delete in reverse order (currently)");
1145 /* Invoke the n'th filter function for the current rsfp. */
1147 filter_read(idx, buf_sv, maxlen)
1150 int maxlen; /* 0 = read one text line */
1157 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1158 /* Provide a default input filter to make life easy. */
1159 /* Note that we append to the line. This is handy. */
1161 warn("filter_read %d: from rsfp\n", idx);
1165 int old_len = SvCUR(buf_sv) ;
1167 /* ensure buf_sv is large enough */
1168 SvGROW(buf_sv, old_len + maxlen) ;
1169 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1170 if (PerlIO_error(rsfp))
1171 return -1; /* error */
1173 return 0 ; /* end of file */
1175 SvCUR_set(buf_sv, old_len + len) ;
1178 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1179 if (PerlIO_error(rsfp))
1180 return -1; /* error */
1182 return 0 ; /* end of file */
1185 return SvCUR(buf_sv);
1187 /* Skip this filter slot if filter has been deleted */
1188 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1190 warn("filter_read %d: skipped (filter deleted)\n", idx);
1191 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1193 /* Get function pointer hidden within datasv */
1194 funcp = (filter_t)IoDIRP(datasv);
1196 warn("filter_read %d: via function %p (%s)\n",
1197 idx, funcp, SvPV(datasv,na));
1198 /* Call function. The function is expected to */
1199 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1200 /* Return: <0:error, =0:eof, >0:not eof */
1201 return (*funcp)(idx, buf_sv, maxlen);
1205 filter_gets(sv,fp, append)
1207 register PerlIO *fp;
1213 SvCUR_set(sv, 0); /* start with empty line */
1214 if (FILTER_READ(0, sv, 0) > 0)
1215 return ( SvPVX(sv) ) ;
1220 return (sv_gets(sv, fp, append));
1226 static char* exp_name[] =
1227 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1230 EXT int yychar; /* last token */
1240 if (pending_ident) {
1241 char pit = pending_ident;
1245 if (strchr(tokenbuf,':'))
1246 croak(no_myglob,tokenbuf);
1247 yylval.opval = newOP(OP_PADANY, 0);
1248 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1252 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1253 if (last_lop_op == OP_SORT &&
1254 tokenbuf[0] == '$' &&
1255 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1258 for (d = in_eval ? oldoldbufptr : linestart;
1259 d < bufend && *d != '\n';
1262 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1263 croak("Can't use \"my %s\" in sort comparison",
1269 yylval.opval = newOP(OP_PADANY, 0);
1270 yylval.opval->op_targ = tmp;
1274 /* Force them to make up their mind on "@foo". */
1275 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1276 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1277 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1278 yyerror(form("In string, %s now must be written as \\%s",
1279 tokenbuf, tokenbuf));
1282 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1283 yylval.opval->op_private = OPpCONST_ENTERED;
1284 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1285 ((tokenbuf[0] == '$') ? SVt_PV
1286 : (tokenbuf[0] == '@') ? SVt_PVAV
1291 switch (lex_state) {
1293 case LEX_NORMAL: /* Some compilers will produce faster */
1294 case LEX_INTERPNORMAL: /* code if we comment these out. */
1300 yylval = nextval[nexttoke];
1302 lex_state = lex_defer;
1303 expect = lex_expect;
1304 lex_defer = LEX_NORMAL;
1306 return(nexttype[nexttoke]);
1308 case LEX_INTERPCASEMOD:
1310 if (bufptr != bufend && *bufptr != '\\')
1311 croak("panic: INTERPCASEMOD");
1313 if (bufptr == bufend || bufptr[1] == 'E') {
1316 oldmod = lex_casestack[--lex_casemods];
1317 lex_casestack[lex_casemods] = '\0';
1318 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1320 lex_state = LEX_INTERPCONCAT;
1324 if (bufptr != bufend)
1326 lex_state = LEX_INTERPCONCAT;
1331 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1332 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1333 if (strchr("LU", *s) &&
1334 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1336 lex_casestack[--lex_casemods] = '\0';
1339 if (lex_casemods > 10) {
1340 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1341 if (newlb != lex_casestack) {
1343 lex_casestack = newlb;
1346 lex_casestack[lex_casemods++] = *s;
1347 lex_casestack[lex_casemods] = '\0';
1348 lex_state = LEX_INTERPCONCAT;
1349 nextval[nexttoke].ival = 0;
1352 nextval[nexttoke].ival = OP_LCFIRST;
1354 nextval[nexttoke].ival = OP_UCFIRST;
1356 nextval[nexttoke].ival = OP_LC;
1358 nextval[nexttoke].ival = OP_UC;
1360 nextval[nexttoke].ival = OP_QUOTEMETA;
1362 croak("panic: yylex");
1374 case LEX_INTERPPUSH:
1375 return sublex_push();
1377 case LEX_INTERPSTART:
1378 if (bufptr == bufend)
1379 return sublex_done();
1381 lex_dojoin = (*bufptr == '@');
1382 lex_state = LEX_INTERPNORMAL;
1384 nextval[nexttoke].ival = 0;
1386 force_ident("\"", '$');
1387 nextval[nexttoke].ival = 0;
1389 nextval[nexttoke].ival = 0;
1391 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1400 case LEX_INTERPENDMAYBE:
1401 if (intuit_more(bufptr)) {
1402 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1410 lex_state = LEX_INTERPCONCAT;
1414 case LEX_INTERPCONCAT:
1417 croak("panic: INTERPCONCAT");
1419 if (bufptr == bufend)
1420 return sublex_done();
1422 if (SvIVX(linestr) == '\'') {
1423 SV *sv = newSVsv(linestr);
1426 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1430 s = scan_const(bufptr);
1432 lex_state = LEX_INTERPCASEMOD;
1434 lex_state = LEX_INTERPSTART;
1438 nextval[nexttoke] = yylval;
1451 lex_state = LEX_NORMAL;
1452 s = scan_formline(bufptr);
1459 oldoldbufptr = oldbufptr;
1462 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1468 croak("Unrecognized character \\%03o", *s & 255);
1471 goto fake_eof; /* emulate EOF on ^D or ^Z */
1477 yyerror("Missing right bracket");
1481 goto retry; /* ignore stray nulls */
1484 if (!in_eval && !preambled) {
1486 sv_setpv(linestr,incl_perldb());
1488 sv_catpv(linestr,";");
1490 while(AvFILL(preambleav) >= 0) {
1491 SV *tmpsv = av_shift(preambleav);
1492 sv_catsv(linestr, tmpsv);
1493 sv_catpv(linestr, ";");
1496 sv_free((SV*)preambleav);
1499 if (minus_n || minus_p) {
1500 sv_catpv(linestr, "LINE: while (<>) {");
1502 sv_catpv(linestr,"chomp;");
1504 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1506 GvIMPORTED_AV_on(gv);
1508 if (strchr("/'\"", *splitstr)
1509 && strchr(splitstr + 1, *splitstr))
1510 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1513 s = "'~#\200\1'"; /* surely one char is unused...*/
1514 while (s[1] && strchr(splitstr, *s)) s++;
1516 sv_catpvf(linestr, "@F=split(%s%c",
1517 "q" + (delim == '\''), delim);
1518 for (s = splitstr; *s; s++) {
1520 sv_catpvn(linestr, "\\", 1);
1521 sv_catpvn(linestr, s, 1);
1523 sv_catpvf(linestr, "%c);", delim);
1527 sv_catpv(linestr,"@F=split(' ');");
1530 sv_catpv(linestr, "\n");
1531 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1532 bufend = SvPVX(linestr) + SvCUR(linestr);
1533 if (PERLDB_LINE && curstash != debstash) {
1534 SV *sv = NEWSV(85,0);
1536 sv_upgrade(sv, SVt_PVMG);
1537 sv_setsv(sv,linestr);
1538 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1543 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1546 if (preprocess && !in_eval)
1547 (void)my_pclose(rsfp);
1548 else if ((PerlIO *)rsfp == PerlIO_stdin())
1549 PerlIO_clearerr(rsfp);
1551 (void)PerlIO_close(rsfp);
1556 if (!in_eval && (minus_n || minus_p)) {
1557 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1558 sv_catpv(linestr,";}");
1559 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1560 bufend = SvPVX(linestr) + SvCUR(linestr);
1561 minus_n = minus_p = 0;
1564 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1565 sv_setpv(linestr,"");
1566 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1569 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1572 /* Incest with pod. */
1573 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1574 sv_setpv(linestr, "");
1575 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1576 bufend = SvPVX(linestr) + SvCUR(linestr);
1581 } while (doextract);
1582 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1583 if (PERLDB_LINE && curstash != debstash) {
1584 SV *sv = NEWSV(85,0);
1586 sv_upgrade(sv, SVt_PVMG);
1587 sv_setsv(sv,linestr);
1588 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1590 bufend = SvPVX(linestr) + SvCUR(linestr);
1591 if (curcop->cop_line == 1) {
1592 while (s < bufend && isSPACE(*s))
1594 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1598 if (*s == '#' && *(s+1) == '!')
1600 #ifdef ALTERNATE_SHEBANG
1602 static char as[] = ALTERNATE_SHEBANG;
1603 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1604 d = s + (sizeof(as) - 1);
1606 #endif /* ALTERNATE_SHEBANG */
1615 while (*d && !isSPACE(*d))
1619 #ifdef ARG_ZERO_IS_SCRIPT
1620 if (ipathend > ipath) {
1622 * HP-UX (at least) sets argv[0] to the script name,
1623 * which makes $^X incorrect. And Digital UNIX and Linux,
1624 * at least, set argv[0] to the basename of the Perl
1625 * interpreter. So, having found "#!", we'll set it right.
1627 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1628 assert(SvPOK(x) || SvGMAGICAL(x));
1629 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1630 sv_setpvn(x, ipath, ipathend - ipath);
1633 TAINT_NOT; /* $^X is always tainted, but that's OK */
1635 #endif /* ARG_ZERO_IS_SCRIPT */
1640 d = instr(s,"perl -");
1642 d = instr(s,"perl");
1643 #ifdef ALTERNATE_SHEBANG
1645 * If the ALTERNATE_SHEBANG on this system starts with a
1646 * character that can be part of a Perl expression, then if
1647 * we see it but not "perl", we're probably looking at the
1648 * start of Perl code, not a request to hand off to some
1649 * other interpreter. Similarly, if "perl" is there, but
1650 * not in the first 'word' of the line, we assume the line
1651 * contains the start of the Perl program.
1653 if (d && *s != '#') {
1655 while (*c && !strchr("; \t\r\n\f\v#", *c))
1658 d = Nullch; /* "perl" not in first word; ignore */
1660 *s = '#'; /* Don't try to parse shebang line */
1662 #endif /* ALTERNATE_SHEBANG */
1667 !instr(s,"indir") &&
1668 instr(origargv[0],"perl"))
1674 while (s < bufend && isSPACE(*s))
1677 Newz(899,newargv,origargc+3,char*);
1679 while (s < bufend && !isSPACE(*s))
1682 Copy(origargv+1, newargv+2, origargc+1, char*);
1687 execv(ipath, newargv);
1688 croak("Can't exec %s", ipath);
1691 U32 oldpdb = perldb;
1692 bool oldn = minus_n;
1693 bool oldp = minus_p;
1695 while (*d && !isSPACE(*d)) d++;
1696 while (*d == ' ' || *d == '\t') d++;
1700 if (*d == 'M' || *d == 'm') {
1702 while (*d && !isSPACE(*d)) d++;
1703 croak("Too late for \"-%.*s\" option",
1706 d = moreswitches(d);
1708 if (PERLDB_LINE && !oldpdb ||
1709 ( minus_n || minus_p ) && !(oldn || oldp) )
1710 /* if we have already added "LINE: while (<>) {",
1711 we must not do it again */
1713 sv_setpv(linestr, "");
1714 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1715 bufend = SvPVX(linestr) + SvCUR(linestr);
1718 (void)gv_fetchfile(origfilename);
1725 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1727 lex_state = LEX_FORMLINE;
1732 warn("Illegal character \\%03o (carriage return)", '\r');
1734 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1735 case ' ': case '\t': case '\f': case 013:
1740 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1742 while (s < d && *s != '\n')
1747 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1749 lex_state = LEX_FORMLINE;
1759 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1764 while (s < bufend && (*s == ' ' || *s == '\t'))
1767 if (strnEQ(s,"=>",2)) {
1769 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1770 (int)tmp, (int)tmp);
1771 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1772 OPERATOR('-'); /* unary minus */
1774 last_uni = oldbufptr;
1775 last_lop_op = OP_FTEREAD; /* good enough */
1777 case 'r': FTST(OP_FTEREAD);
1778 case 'w': FTST(OP_FTEWRITE);
1779 case 'x': FTST(OP_FTEEXEC);
1780 case 'o': FTST(OP_FTEOWNED);
1781 case 'R': FTST(OP_FTRREAD);
1782 case 'W': FTST(OP_FTRWRITE);
1783 case 'X': FTST(OP_FTREXEC);
1784 case 'O': FTST(OP_FTROWNED);
1785 case 'e': FTST(OP_FTIS);
1786 case 'z': FTST(OP_FTZERO);
1787 case 's': FTST(OP_FTSIZE);
1788 case 'f': FTST(OP_FTFILE);
1789 case 'd': FTST(OP_FTDIR);
1790 case 'l': FTST(OP_FTLINK);
1791 case 'p': FTST(OP_FTPIPE);
1792 case 'S': FTST(OP_FTSOCK);
1793 case 'u': FTST(OP_FTSUID);
1794 case 'g': FTST(OP_FTSGID);
1795 case 'k': FTST(OP_FTSVTX);
1796 case 'b': FTST(OP_FTBLK);
1797 case 'c': FTST(OP_FTCHR);
1798 case 't': FTST(OP_FTTTY);
1799 case 'T': FTST(OP_FTTEXT);
1800 case 'B': FTST(OP_FTBINARY);
1801 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1802 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1803 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1805 croak("Unrecognized file test: -%c", (int)tmp);
1812 if (expect == XOPERATOR)
1817 else if (*s == '>') {
1820 if (isIDFIRST(*s)) {
1821 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1829 if (expect == XOPERATOR)
1832 if (isSPACE(*s) || !isSPACE(*bufptr))
1834 OPERATOR('-'); /* unary minus */
1841 if (expect == XOPERATOR)
1846 if (expect == XOPERATOR)
1849 if (isSPACE(*s) || !isSPACE(*bufptr))
1855 if (expect != XOPERATOR) {
1856 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1858 force_ident(tokenbuf, '*');
1871 if (expect == XOPERATOR) {
1876 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1879 yyerror("Final % should be \\% or %name");
1882 pending_ident = '%';
1904 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1905 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1910 if (curcop->cop_line < copline)
1911 copline = curcop->cop_line;
1922 if (lex_brackets <= 0)
1923 yyerror("Unmatched right bracket");
1926 if (lex_state == LEX_INTERPNORMAL) {
1927 if (lex_brackets == 0) {
1928 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1929 lex_state = LEX_INTERPEND;
1936 if (lex_brackets > 100) {
1937 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1938 if (newlb != lex_brackstack) {
1940 lex_brackstack = newlb;
1945 if (lex_formbrack) {
1949 if (oldoldbufptr == last_lop)
1950 lex_brackstack[lex_brackets++] = XTERM;
1952 lex_brackstack[lex_brackets++] = XOPERATOR;
1953 OPERATOR(HASHBRACK);
1955 while (s < bufend && (*s == ' ' || *s == '\t'))
1959 if (d < bufend && *d == '-') {
1962 while (d < bufend && (*d == ' ' || *d == '\t'))
1965 if (d < bufend && isIDFIRST(*d)) {
1966 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1968 while (d < bufend && (*d == ' ' || *d == '\t'))
1971 char minus = (tokenbuf[0] == '-');
1973 (keyword(tokenbuf + 1, len) ||
1974 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1975 perl_get_cv(tokenbuf + 1, FALSE) ))
1976 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1977 tokenbuf + !minus, tokenbuf + !minus);
1978 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1985 lex_brackstack[lex_brackets++] = XSTATE;
1989 lex_brackstack[lex_brackets++] = XOPERATOR;
1994 if (oldoldbufptr == last_lop)
1995 lex_brackstack[lex_brackets++] = XTERM;
1997 lex_brackstack[lex_brackets++] = XOPERATOR;
2000 OPERATOR(HASHBRACK);
2001 /* This hack serves to disambiguate a pair of curlies
2002 * as being a block or an anon hash. Normally, expectation
2003 * determines that, but in cases where we're not in a
2004 * position to expect anything in particular (like inside
2005 * eval"") we have to resolve the ambiguity. This code
2006 * covers the case where the first term in the curlies is a
2007 * quoted string. Most other cases need to be explicitly
2008 * disambiguated by prepending a `+' before the opening
2009 * curly in order to force resolution as an anon hash.
2011 * XXX should probably propagate the outer expectation
2012 * into eval"" to rely less on this hack, but that could
2013 * potentially break current behavior of eval"".
2017 if (*s == '\'' || *s == '"' || *s == '`') {
2018 /* common case: get past first string, handling escapes */
2019 for (t++; t < bufend && *t != *s;)
2020 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2024 else if (*s == 'q') {
2027 || ((*t == 'q' || *t == 'x') && ++t < bufend
2028 && !isALNUM(*t)))) {
2030 char open, close, term;
2033 while (t < bufend && isSPACE(*t))
2037 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2041 for (t++; t < bufend; t++) {
2042 if (*t == '\\' && t+1 < bufend && open != '\\')
2044 else if (*t == open)
2048 for (t++; t < bufend; t++) {
2049 if (*t == '\\' && t+1 < bufend)
2051 else if (*t == close && --brackets <= 0)
2053 else if (*t == open)
2059 else if (isALPHA(*s)) {
2060 for (t++; t < bufend && isALNUM(*t); t++) ;
2062 while (t < bufend && isSPACE(*t))
2064 /* if comma follows first term, call it an anon hash */
2065 /* XXX it could be a comma expression with loop modifiers */
2066 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2067 || (*t == '=' && t[1] == '>')))
2068 OPERATOR(HASHBRACK);
2072 lex_brackstack[lex_brackets-1] = XSTATE;
2078 yylval.ival = curcop->cop_line;
2079 if (isSPACE(*s) || *s == '#')
2080 copline = NOLINE; /* invalidate current command line number */
2085 if (lex_brackets <= 0)
2086 yyerror("Unmatched right bracket");
2088 expect = (expectation)lex_brackstack[--lex_brackets];
2089 if (lex_brackets < lex_formbrack)
2091 if (lex_state == LEX_INTERPNORMAL) {
2092 if (lex_brackets == 0) {
2093 if (lex_fakebrack) {
2094 lex_state = LEX_INTERPEND;
2096 return yylex(); /* ignore fake brackets */
2098 if (*s == '-' && s[1] == '>')
2099 lex_state = LEX_INTERPENDMAYBE;
2100 else if (*s != '[' && *s != '{')
2101 lex_state = LEX_INTERPEND;
2104 if (lex_brackets < lex_fakebrack) {
2107 return yylex(); /* ignore fake brackets */
2117 if (expect == XOPERATOR) {
2118 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2126 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2129 force_ident(tokenbuf, '&');
2133 yylval.ival = (OPpENTERSUB_AMPER<<8);
2152 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2153 warn("Reversed %c= operator",(int)tmp);
2155 if (expect == XSTATE && isALPHA(tmp) &&
2156 (s == linestart+1 || s[-2] == '\n') )
2158 if (in_eval && !rsfp) {
2163 if (strnEQ(s,"=cut",4)) {
2180 if (lex_brackets < lex_formbrack) {
2182 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2183 if (*t == '\n' || *t == '#') {
2201 if (expect != XOPERATOR) {
2202 if (s[1] != '<' && !strchr(s,'>'))
2205 s = scan_heredoc(s);
2207 s = scan_inputsymbol(s);
2208 TERM(sublex_start());
2213 SHop(OP_LEFT_SHIFT);
2227 SHop(OP_RIGHT_SHIFT);
2236 if (expect == XOPERATOR) {
2237 if (lex_formbrack && lex_brackets == lex_formbrack) {
2240 return ','; /* grandfather non-comma-format format */
2244 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2245 if (expect == XOPERATOR)
2246 no_op("Array length", bufptr);
2248 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2253 pending_ident = '#';
2257 if (expect == XOPERATOR)
2258 no_op("Scalar", bufptr);
2260 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2263 yyerror("Final $ should be \\$ or $name");
2267 /* This kludge not intended to be bulletproof. */
2268 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2269 yylval.opval = newSVOP(OP_CONST, 0,
2270 newSViv((IV)compiling.cop_arybase));
2271 yylval.opval->op_private = OPpCONST_ARYBASE;
2276 if (lex_state == LEX_NORMAL)
2279 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2285 isSPACE(*t) || isALNUM(*t) || *t == '$';
2288 bufptr = skipspace(bufptr);
2289 while (t < bufend && *t != ']')
2291 warn("Multidimensional syntax %.*s not supported",
2292 (t - bufptr) + 1, bufptr);
2296 else if (*s == '{') {
2298 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2299 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2301 char tmpbuf[sizeof tokenbuf];
2303 for (t++; isSPACE(*t); t++) ;
2304 if (isIDFIRST(*t)) {
2305 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2306 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2307 warn("You need to quote \"%s\"", tmpbuf);
2314 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2315 bool islop = (last_lop == oldoldbufptr);
2316 if (!islop || last_lop_op == OP_GREPSTART)
2318 else if (strchr("$@\"'`q", *s))
2319 expect = XTERM; /* e.g. print $fh "foo" */
2320 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2321 expect = XTERM; /* e.g. print $fh &sub */
2322 else if (isIDFIRST(*s)) {
2323 char tmpbuf[sizeof tokenbuf];
2324 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2325 if (tmp = keyword(tmpbuf, len)) {
2326 /* binary operators exclude handle interpretations */
2338 expect = XTERM; /* e.g. print $fh length() */
2343 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2344 if (gv && GvCVu(gv))
2345 expect = XTERM; /* e.g. print $fh subr() */
2348 else if (isDIGIT(*s))
2349 expect = XTERM; /* e.g. print $fh 3 */
2350 else if (*s == '.' && isDIGIT(s[1]))
2351 expect = XTERM; /* e.g. print $fh .3 */
2352 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2353 expect = XTERM; /* e.g. print $fh -1 */
2354 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2355 expect = XTERM; /* print $fh <<"EOF" */
2357 pending_ident = '$';
2361 if (expect == XOPERATOR)
2364 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2367 yyerror("Final @ should be \\@ or @name");
2370 if (lex_state == LEX_NORMAL)
2372 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2376 /* Warn about @ where they meant $. */
2378 if (*s == '[' || *s == '{') {
2380 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2382 if (*t == '}' || *t == ']') {
2384 bufptr = skipspace(bufptr);
2385 warn("Scalar value %.*s better written as $%.*s",
2386 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2391 pending_ident = '@';
2394 case '/': /* may either be division or pattern */
2395 case '?': /* may either be conditional or pattern */
2396 if (expect != XOPERATOR) {
2399 TERM(sublex_start());
2407 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2408 (s == linestart || s[-1] == '\n') ) {
2413 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2419 yylval.ival = OPf_SPECIAL;
2425 if (expect != XOPERATOR)
2430 case '0': case '1': case '2': case '3': case '4':
2431 case '5': case '6': case '7': case '8': case '9':
2433 if (expect == XOPERATOR)
2439 if (expect == XOPERATOR) {
2440 if (lex_formbrack && lex_brackets == lex_formbrack) {
2443 return ','; /* grandfather non-comma-format format */
2449 missingterm((char*)0);
2450 yylval.ival = OP_CONST;
2451 TERM(sublex_start());
2455 if (expect == XOPERATOR) {
2456 if (lex_formbrack && lex_brackets == lex_formbrack) {
2459 return ','; /* grandfather non-comma-format format */
2465 missingterm((char*)0);
2466 yylval.ival = OP_CONST;
2467 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2468 if (*d == '$' || *d == '@' || *d == '\\') {
2469 yylval.ival = OP_STRINGIFY;
2473 TERM(sublex_start());
2477 if (expect == XOPERATOR)
2478 no_op("Backticks",s);
2480 missingterm((char*)0);
2481 yylval.ival = OP_BACKTICK;
2483 TERM(sublex_start());
2487 if (dowarn && lex_inwhat && isDIGIT(*s))
2488 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2489 if (expect == XOPERATOR)
2490 no_op("Backslash",s);
2494 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2530 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2532 /* Some keywords can be followed by any delimiter, including ':' */
2533 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2534 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2535 (tokenbuf[0] == 'q' &&
2536 strchr("qwx", tokenbuf[1]))));
2538 /* x::* is just a word, unless x is "CORE" */
2539 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2543 while (d < bufend && isSPACE(*d))
2544 d++; /* no comments skipped here, or s### is misparsed */
2546 /* Is this a label? */
2547 if (!tmp && expect == XSTATE
2548 && d < bufend && *d == ':' && *(d + 1) != ':') {
2550 yylval.pval = savepv(tokenbuf);
2555 /* Check for keywords */
2556 tmp = keyword(tokenbuf, len);
2558 /* Is this a word before a => operator? */
2559 if (strnEQ(d,"=>",2)) {
2561 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2562 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2563 tokenbuf, tokenbuf);
2564 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2565 yylval.opval->op_private = OPpCONST_BARE;
2569 if (tmp < 0) { /* second-class keyword? */
2571 if (expect != XOPERATOR &&
2572 (*s != ':' || s[1] != ':') &&
2573 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2585 default: /* not a keyword */
2589 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2591 /* Get the rest if it looks like a package qualifier */
2593 if (*s == '\'' || *s == ':' && s[1] == ':') {
2594 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2597 croak("Bad name after %s::", tokenbuf);
2600 if (expect == XOPERATOR) {
2601 if (bufptr == linestart) {
2607 no_op("Bareword",s);
2610 /* Look for a subroutine with this name in current package. */
2612 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2614 /* Presume this is going to be a bareword of some sort. */
2617 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2618 yylval.opval->op_private = OPpCONST_BARE;
2620 /* See if it's the indirect object for a list operator. */
2623 oldoldbufptr < bufptr &&
2624 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2625 /* NO SKIPSPACE BEFORE HERE! */
2627 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2629 bool immediate_paren = *s == '(';
2631 /* (Now we can afford to cross potential line boundary.) */
2634 /* Two barewords in a row may indicate method call. */
2636 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2639 /* If not a declared subroutine, it's an indirect object. */
2640 /* (But it's an indir obj regardless for sort.) */
2642 if ((last_lop_op == OP_SORT ||
2643 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2644 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2645 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2650 /* If followed by a paren, it's certainly a subroutine. */
2656 if (gv && GvCVu(gv)) {
2657 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2658 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2663 nextval[nexttoke].opval = yylval.opval;
2670 /* If followed by var or block, call it a method (unless sub) */
2672 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2673 last_lop = oldbufptr;
2674 last_lop_op = OP_METHOD;
2678 /* If followed by a bareword, see if it looks like indir obj. */
2680 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2683 /* Not a method, so call it a subroutine (if defined) */
2685 if (gv && GvCVu(gv)) {
2687 if (lastchar == '-')
2688 warn("Ambiguous use of -%s resolved as -&%s()",
2689 tokenbuf, tokenbuf);
2690 last_lop = oldbufptr;
2691 last_lop_op = OP_ENTERSUB;
2692 /* Check for a constant sub */
2694 if ((sv = cv_const_sv(cv))) {
2696 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2697 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2698 yylval.opval->op_private = 0;
2702 /* Resolve to GV now. */
2703 op_free(yylval.opval);
2704 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2705 /* Is there a prototype? */
2708 char *proto = SvPV((SV*)cv, len);
2711 if (strEQ(proto, "$"))
2713 if (*proto == '&' && *s == '{') {
2714 sv_setpv(subname,"__ANON__");
2718 nextval[nexttoke].opval = yylval.opval;
2724 if (hints & HINT_STRICT_SUBS &&
2727 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2728 last_lop_op != OP_ACCEPT &&
2729 last_lop_op != OP_PIPE_OP &&
2730 last_lop_op != OP_SOCKPAIR)
2733 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2738 /* Call it a bare word */
2742 if (lastchar != '-') {
2743 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2745 warn(warn_reserved, tokenbuf);
2748 if (lastchar && strchr("*%&", lastchar)) {
2749 warn("Operator or semicolon missing before %c%s",
2750 lastchar, tokenbuf);
2751 warn("Ambiguous use of %c resolved as operator %c",
2752 lastchar, lastchar);
2758 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2759 newSVsv(GvSV(curcop->cop_filegv)));
2763 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2764 newSVpvf("%ld", (long)curcop->cop_line));
2767 case KEY___PACKAGE__:
2768 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2770 ? newSVsv(curstname)
2779 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2780 char *pname = "main";
2781 if (tokenbuf[2] == 'D')
2782 pname = HvNAME(curstash ? curstash : defstash);
2783 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2786 GvIOp(gv) = newIO();
2787 IoIFP(GvIOp(gv)) = rsfp;
2788 #if defined(HAS_FCNTL) && defined(F_SETFD)
2790 int fd = PerlIO_fileno(rsfp);
2791 fcntl(fd,F_SETFD,fd >= 3);
2794 /* Mark this internal pseudo-handle as clean */
2795 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2797 IoTYPE(GvIOp(gv)) = '|';
2798 else if ((PerlIO*)rsfp == PerlIO_stdin())
2799 IoTYPE(GvIOp(gv)) = '-';
2801 IoTYPE(GvIOp(gv)) = '<';
2811 if (expect == XSTATE) {
2818 if (*s == ':' && s[1] == ':') {
2821 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2822 tmp = keyword(tokenbuf, len);
2836 LOP(OP_ACCEPT,XTERM);
2842 LOP(OP_ATAN2,XTERM);
2851 LOP(OP_BLESS,XTERM);
2860 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2880 LOP(OP_CRYPT,XTERM);
2884 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2885 if (*d != '0' && isDIGIT(*d))
2886 yywarn("chmod: mode argument is missing initial 0");
2888 LOP(OP_CHMOD,XTERM);
2891 LOP(OP_CHOWN,XTERM);
2894 LOP(OP_CONNECT,XTERM);
2910 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2914 hints |= HINT_BLOCK_SCOPE;
2924 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2925 LOP(OP_DBMOPEN,XTERM);
2931 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2938 yylval.ival = curcop->cop_line;
2952 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2953 UNIBRACK(OP_ENTEREVAL);
2968 case KEY_endhostent:
2974 case KEY_endservent:
2977 case KEY_endprotoent:
2988 yylval.ival = curcop->cop_line;
2990 if (isIDFIRST(*s)) {
2992 if ((bufend - p) >= 3 &&
2993 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2997 croak("Missing $ on loop variable");
3002 LOP(OP_FORMLINE,XTERM);
3008 LOP(OP_FCNTL,XTERM);
3014 LOP(OP_FLOCK,XTERM);
3023 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3026 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3041 case KEY_getpriority:
3042 LOP(OP_GETPRIORITY,XTERM);
3044 case KEY_getprotobyname:
3047 case KEY_getprotobynumber:
3048 LOP(OP_GPBYNUMBER,XTERM);
3050 case KEY_getprotoent:
3062 case KEY_getpeername:
3063 UNI(OP_GETPEERNAME);
3065 case KEY_gethostbyname:
3068 case KEY_gethostbyaddr:
3069 LOP(OP_GHBYADDR,XTERM);
3071 case KEY_gethostent:
3074 case KEY_getnetbyname:
3077 case KEY_getnetbyaddr:
3078 LOP(OP_GNBYADDR,XTERM);
3083 case KEY_getservbyname:
3084 LOP(OP_GSBYNAME,XTERM);
3086 case KEY_getservbyport:
3087 LOP(OP_GSBYPORT,XTERM);
3089 case KEY_getservent:
3092 case KEY_getsockname:
3093 UNI(OP_GETSOCKNAME);
3095 case KEY_getsockopt:
3096 LOP(OP_GSOCKOPT,XTERM);
3118 yylval.ival = curcop->cop_line;
3122 LOP(OP_INDEX,XTERM);
3128 LOP(OP_IOCTL,XTERM);
3140 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3171 LOP(OP_LISTEN,XTERM);
3178 TERM(sublex_start());
3181 LOP(OP_MAPSTART,XREF);
3184 LOP(OP_MKDIR,XTERM);
3187 LOP(OP_MSGCTL,XTERM);
3190 LOP(OP_MSGGET,XTERM);
3193 LOP(OP_MSGRCV,XTERM);
3196 LOP(OP_MSGSND,XTERM);
3203 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3210 if (expect != XSTATE)
3211 yyerror("\"no\" not allowed in expression");
3212 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3213 s = force_version(s);
3222 if (isIDFIRST(*s)) {
3224 for (d = s; isALNUM(*d); d++) ;
3226 if (strchr("|&*+-=!?:.", *t))
3227 warn("Precedence problem: open %.*s should be open(%.*s)",
3233 yylval.ival = OP_OR;
3243 LOP(OP_OPEN_DIR,XTERM);
3246 checkcomma(s,tokenbuf,"filehandle");
3250 checkcomma(s,tokenbuf,"filehandle");
3269 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3273 LOP(OP_PIPE_OP,XTERM);
3278 missingterm((char*)0);
3279 yylval.ival = OP_CONST;
3280 TERM(sublex_start());
3288 missingterm((char*)0);
3289 if (dowarn && SvLEN(lex_stuff)) {
3290 d = SvPV_force(lex_stuff, len);
3291 for (; len; --len, ++d) {
3293 warn("Possible attempt to separate words with commas");
3297 warn("Possible attempt to put comments in qw() list");
3303 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3307 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3310 yylval.ival = OP_SPLIT;
3314 last_lop = oldbufptr;
3315 last_lop_op = OP_SPLIT;
3321 missingterm((char*)0);
3322 yylval.ival = OP_STRINGIFY;
3323 if (SvIVX(lex_stuff) == '\'')
3324 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3325 TERM(sublex_start());
3330 missingterm((char*)0);
3331 yylval.ival = OP_BACKTICK;
3333 TERM(sublex_start());
3340 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3341 if (isIDFIRST(*tokenbuf))
3342 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3344 yyerror("<> should be quotes");
3351 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3355 LOP(OP_RENAME,XTERM);
3364 LOP(OP_RINDEX,XTERM);
3387 LOP(OP_REVERSE,XTERM);
3398 TERM(sublex_start());
3400 TOKEN(1); /* force error */
3409 LOP(OP_SELECT,XTERM);
3415 LOP(OP_SEMCTL,XTERM);
3418 LOP(OP_SEMGET,XTERM);
3421 LOP(OP_SEMOP,XTERM);
3427 LOP(OP_SETPGRP,XTERM);
3429 case KEY_setpriority:
3430 LOP(OP_SETPRIORITY,XTERM);
3432 case KEY_sethostent:
3438 case KEY_setservent:
3441 case KEY_setprotoent:
3451 LOP(OP_SEEKDIR,XTERM);
3453 case KEY_setsockopt:
3454 LOP(OP_SSOCKOPT,XTERM);
3460 LOP(OP_SHMCTL,XTERM);
3463 LOP(OP_SHMGET,XTERM);
3466 LOP(OP_SHMREAD,XTERM);
3469 LOP(OP_SHMWRITE,XTERM);
3472 LOP(OP_SHUTDOWN,XTERM);
3481 LOP(OP_SOCKET,XTERM);
3483 case KEY_socketpair:
3484 LOP(OP_SOCKPAIR,XTERM);
3487 checkcomma(s,tokenbuf,"subroutine name");
3489 if (*s == ';' || *s == ')') /* probably a close */
3490 croak("sort is now a reserved word");
3492 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3496 LOP(OP_SPLIT,XTERM);
3499 LOP(OP_SPRINTF,XTERM);
3502 LOP(OP_SPLICE,XTERM);
3518 LOP(OP_SUBSTR,XTERM);
3525 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3526 char tmpbuf[sizeof tokenbuf];
3528 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3529 if (strchr(tmpbuf, ':'))
3530 sv_setpv(subname, tmpbuf);
3532 sv_setsv(subname,curstname);
3533 sv_catpvn(subname,"::",2);
3534 sv_catpvn(subname,tmpbuf,len);
3536 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3540 expect = XTERMBLOCK;
3541 sv_setpv(subname,"?");
3544 if (tmp == KEY_format) {
3547 lex_formbrack = lex_brackets + 1;
3551 /* Look for a prototype */
3558 SvREFCNT_dec(lex_stuff);
3560 croak("Prototype not terminated");
3563 d = SvPVX(lex_stuff);
3565 for (p = d; *p; ++p) {
3570 SvCUR(lex_stuff) = tmp;
3573 nextval[1] = nextval[0];
3574 nexttype[1] = nexttype[0];
3575 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3576 nexttype[0] = THING;
3577 if (nexttoke == 1) {
3578 lex_defer = lex_state;
3579 lex_expect = expect;
3580 lex_state = LEX_KNOWNEXT;
3585 if (*SvPV(subname,na) == '?') {
3586 sv_setpv(subname,"__ANON__");
3593 LOP(OP_SYSTEM,XREF);
3596 LOP(OP_SYMLINK,XTERM);
3599 LOP(OP_SYSCALL,XTERM);
3602 LOP(OP_SYSOPEN,XTERM);
3605 LOP(OP_SYSSEEK,XTERM);
3608 LOP(OP_SYSREAD,XTERM);
3611 LOP(OP_SYSWRITE,XTERM);
3615 TERM(sublex_start());
3636 LOP(OP_TRUNCATE,XTERM);
3648 yylval.ival = curcop->cop_line;
3652 yylval.ival = curcop->cop_line;
3656 LOP(OP_UNLINK,XTERM);
3662 LOP(OP_UNPACK,XTERM);
3665 LOP(OP_UTIME,XTERM);
3669 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3670 if (*d != '0' && isDIGIT(*d))
3671 yywarn("umask: argument is missing initial 0");
3676 LOP(OP_UNSHIFT,XTERM);
3679 if (expect != XSTATE)
3680 yyerror("\"use\" not allowed in expression");
3683 s = force_version(s);
3684 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3685 nextval[nexttoke].opval = Nullop;
3690 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3691 s = force_version(s);
3704 yylval.ival = curcop->cop_line;
3708 hints |= HINT_BLOCK_SCOPE;
3715 LOP(OP_WAITPID,XTERM);
3721 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3725 if (expect == XOPERATOR)
3731 yylval.ival = OP_XOR;
3736 TERM(sublex_start());
3749 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3750 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3751 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3752 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3753 if (strEQ(d,"__END__")) return KEY___END__;
3757 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3762 if (strEQ(d,"and")) return -KEY_and;
3763 if (strEQ(d,"abs")) return -KEY_abs;
3766 if (strEQ(d,"alarm")) return -KEY_alarm;
3767 if (strEQ(d,"atan2")) return -KEY_atan2;
3770 if (strEQ(d,"accept")) return -KEY_accept;
3775 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3778 if (strEQ(d,"bless")) return -KEY_bless;
3779 if (strEQ(d,"bind")) return -KEY_bind;
3780 if (strEQ(d,"binmode")) return -KEY_binmode;
3783 if (strEQ(d,"CORE")) return -KEY_CORE;
3788 if (strEQ(d,"cmp")) return -KEY_cmp;
3789 if (strEQ(d,"chr")) return -KEY_chr;
3790 if (strEQ(d,"cos")) return -KEY_cos;
3793 if (strEQ(d,"chop")) return KEY_chop;
3796 if (strEQ(d,"close")) return -KEY_close;
3797 if (strEQ(d,"chdir")) return -KEY_chdir;
3798 if (strEQ(d,"chomp")) return KEY_chomp;
3799 if (strEQ(d,"chmod")) return -KEY_chmod;
3800 if (strEQ(d,"chown")) return -KEY_chown;
3801 if (strEQ(d,"crypt")) return -KEY_crypt;
3804 if (strEQ(d,"chroot")) return -KEY_chroot;
3805 if (strEQ(d,"caller")) return -KEY_caller;
3808 if (strEQ(d,"connect")) return -KEY_connect;
3811 if (strEQ(d,"closedir")) return -KEY_closedir;
3812 if (strEQ(d,"continue")) return -KEY_continue;
3817 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3822 if (strEQ(d,"do")) return KEY_do;
3825 if (strEQ(d,"die")) return -KEY_die;
3828 if (strEQ(d,"dump")) return -KEY_dump;
3831 if (strEQ(d,"delete")) return KEY_delete;
3834 if (strEQ(d,"defined")) return KEY_defined;
3835 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3838 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3843 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3844 if (strEQ(d,"END")) return KEY_END;
3849 if (strEQ(d,"eq")) return -KEY_eq;
3852 if (strEQ(d,"eof")) return -KEY_eof;
3853 if (strEQ(d,"exp")) return -KEY_exp;
3856 if (strEQ(d,"else")) return KEY_else;
3857 if (strEQ(d,"exit")) return -KEY_exit;
3858 if (strEQ(d,"eval")) return KEY_eval;
3859 if (strEQ(d,"exec")) return -KEY_exec;
3860 if (strEQ(d,"each")) return KEY_each;
3863 if (strEQ(d,"elsif")) return KEY_elsif;
3866 if (strEQ(d,"exists")) return KEY_exists;
3867 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3870 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3871 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3874 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3877 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3878 if (strEQ(d,"endservent")) return -KEY_endservent;
3881 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3888 if (strEQ(d,"for")) return KEY_for;
3891 if (strEQ(d,"fork")) return -KEY_fork;
3894 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3895 if (strEQ(d,"flock")) return -KEY_flock;
3898 if (strEQ(d,"format")) return KEY_format;
3899 if (strEQ(d,"fileno")) return -KEY_fileno;
3902 if (strEQ(d,"foreach")) return KEY_foreach;
3905 if (strEQ(d,"formline")) return -KEY_formline;
3911 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3912 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3916 if (strnEQ(d,"get",3)) {
3921 if (strEQ(d,"ppid")) return -KEY_getppid;
3922 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3925 if (strEQ(d,"pwent")) return -KEY_getpwent;
3926 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3927 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3930 if (strEQ(d,"peername")) return -KEY_getpeername;
3931 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3932 if (strEQ(d,"priority")) return -KEY_getpriority;
3935 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3938 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3942 else if (*d == 'h') {
3943 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3944 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3945 if (strEQ(d,"hostent")) return -KEY_gethostent;
3947 else if (*d == 'n') {
3948 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3949 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3950 if (strEQ(d,"netent")) return -KEY_getnetent;
3952 else if (*d == 's') {
3953 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3954 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3955 if (strEQ(d,"servent")) return -KEY_getservent;
3956 if (strEQ(d,"sockname")) return -KEY_getsockname;
3957 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3959 else if (*d == 'g') {
3960 if (strEQ(d,"grent")) return -KEY_getgrent;
3961 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3962 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3964 else if (*d == 'l') {
3965 if (strEQ(d,"login")) return -KEY_getlogin;
3967 else if (strEQ(d,"c")) return -KEY_getc;
3972 if (strEQ(d,"gt")) return -KEY_gt;
3973 if (strEQ(d,"ge")) return -KEY_ge;
3976 if (strEQ(d,"grep")) return KEY_grep;
3977 if (strEQ(d,"goto")) return KEY_goto;
3978 if (strEQ(d,"glob")) return KEY_glob;
3981 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3986 if (strEQ(d,"hex")) return -KEY_hex;
3991 if (strEQ(d,"if")) return KEY_if;
3994 if (strEQ(d,"int")) return -KEY_int;
3997 if (strEQ(d,"index")) return -KEY_index;
3998 if (strEQ(d,"ioctl")) return -KEY_ioctl;
4003 if (strEQ(d,"join")) return -KEY_join;
4007 if (strEQ(d,"keys")) return KEY_keys;
4008 if (strEQ(d,"kill")) return -KEY_kill;
4013 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4014 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4020 if (strEQ(d,"lt")) return -KEY_lt;
4021 if (strEQ(d,"le")) return -KEY_le;
4022 if (strEQ(d,"lc")) return -KEY_lc;
4025 if (strEQ(d,"log")) return -KEY_log;
4028 if (strEQ(d,"last")) return KEY_last;
4029 if (strEQ(d,"link")) return -KEY_link;
4032 if (strEQ(d,"local")) return KEY_local;
4033 if (strEQ(d,"lstat")) return -KEY_lstat;
4036 if (strEQ(d,"length")) return -KEY_length;
4037 if (strEQ(d,"listen")) return -KEY_listen;
4040 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4043 if (strEQ(d,"localtime")) return -KEY_localtime;
4049 case 1: return KEY_m;
4051 if (strEQ(d,"my")) return KEY_my;
4054 if (strEQ(d,"map")) return KEY_map;
4057 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4060 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4061 if (strEQ(d,"msgget")) return -KEY_msgget;
4062 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4063 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4068 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4071 if (strEQ(d,"next")) return KEY_next;
4072 if (strEQ(d,"ne")) return -KEY_ne;
4073 if (strEQ(d,"not")) return -KEY_not;
4074 if (strEQ(d,"no")) return KEY_no;
4079 if (strEQ(d,"or")) return -KEY_or;
4082 if (strEQ(d,"ord")) return -KEY_ord;
4083 if (strEQ(d,"oct")) return -KEY_oct;
4086 if (strEQ(d,"open")) return -KEY_open;
4089 if (strEQ(d,"opendir")) return -KEY_opendir;
4096 if (strEQ(d,"pop")) return KEY_pop;
4097 if (strEQ(d,"pos")) return KEY_pos;
4100 if (strEQ(d,"push")) return KEY_push;
4101 if (strEQ(d,"pack")) return -KEY_pack;
4102 if (strEQ(d,"pipe")) return -KEY_pipe;
4105 if (strEQ(d,"print")) return KEY_print;
4108 if (strEQ(d,"printf")) return KEY_printf;
4111 if (strEQ(d,"package")) return KEY_package;
4114 if (strEQ(d,"prototype")) return KEY_prototype;
4119 if (strEQ(d,"q")) return KEY_q;
4120 if (strEQ(d,"qq")) return KEY_qq;
4121 if (strEQ(d,"qw")) return KEY_qw;
4122 if (strEQ(d,"qx")) return KEY_qx;
4124 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4129 if (strEQ(d,"ref")) return -KEY_ref;
4132 if (strEQ(d,"read")) return -KEY_read;
4133 if (strEQ(d,"rand")) return -KEY_rand;
4134 if (strEQ(d,"recv")) return -KEY_recv;
4135 if (strEQ(d,"redo")) return KEY_redo;
4138 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4139 if (strEQ(d,"reset")) return -KEY_reset;
4142 if (strEQ(d,"return")) return KEY_return;
4143 if (strEQ(d,"rename")) return -KEY_rename;
4144 if (strEQ(d,"rindex")) return -KEY_rindex;
4147 if (strEQ(d,"require")) return -KEY_require;
4148 if (strEQ(d,"reverse")) return -KEY_reverse;
4149 if (strEQ(d,"readdir")) return -KEY_readdir;
4152 if (strEQ(d,"readlink")) return -KEY_readlink;
4153 if (strEQ(d,"readline")) return -KEY_readline;
4154 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4157 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4163 case 0: return KEY_s;
4165 if (strEQ(d,"scalar")) return KEY_scalar;
4170 if (strEQ(d,"seek")) return -KEY_seek;
4171 if (strEQ(d,"send")) return -KEY_send;
4174 if (strEQ(d,"semop")) return -KEY_semop;
4177 if (strEQ(d,"select")) return -KEY_select;
4178 if (strEQ(d,"semctl")) return -KEY_semctl;
4179 if (strEQ(d,"semget")) return -KEY_semget;
4182 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4183 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4186 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4187 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4190 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4193 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4194 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4195 if (strEQ(d,"setservent")) return -KEY_setservent;
4198 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4199 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4206 if (strEQ(d,"shift")) return KEY_shift;
4209 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4210 if (strEQ(d,"shmget")) return -KEY_shmget;
4213 if (strEQ(d,"shmread")) return -KEY_shmread;
4216 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4217 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4222 if (strEQ(d,"sin")) return -KEY_sin;
4225 if (strEQ(d,"sleep")) return -KEY_sleep;
4228 if (strEQ(d,"sort")) return KEY_sort;
4229 if (strEQ(d,"socket")) return -KEY_socket;
4230 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4233 if (strEQ(d,"split")) return KEY_split;
4234 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4235 if (strEQ(d,"splice")) return KEY_splice;
4238 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4241 if (strEQ(d,"srand")) return -KEY_srand;
4244 if (strEQ(d,"stat")) return -KEY_stat;
4245 if (strEQ(d,"study")) return KEY_study;
4248 if (strEQ(d,"substr")) return -KEY_substr;
4249 if (strEQ(d,"sub")) return KEY_sub;
4254 if (strEQ(d,"system")) return -KEY_system;
4257 if (strEQ(d,"symlink")) return -KEY_symlink;
4258 if (strEQ(d,"syscall")) return -KEY_syscall;
4259 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4260 if (strEQ(d,"sysread")) return -KEY_sysread;
4261 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4264 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4273 if (strEQ(d,"tr")) return KEY_tr;
4276 if (strEQ(d,"tie")) return KEY_tie;
4279 if (strEQ(d,"tell")) return -KEY_tell;
4280 if (strEQ(d,"tied")) return KEY_tied;
4281 if (strEQ(d,"time")) return -KEY_time;
4284 if (strEQ(d,"times")) return -KEY_times;
4287 if (strEQ(d,"telldir")) return -KEY_telldir;
4290 if (strEQ(d,"truncate")) return -KEY_truncate;
4297 if (strEQ(d,"uc")) return -KEY_uc;
4300 if (strEQ(d,"use")) return KEY_use;
4303 if (strEQ(d,"undef")) return KEY_undef;
4304 if (strEQ(d,"until")) return KEY_until;
4305 if (strEQ(d,"untie")) return KEY_untie;
4306 if (strEQ(d,"utime")) return -KEY_utime;
4307 if (strEQ(d,"umask")) return -KEY_umask;
4310 if (strEQ(d,"unless")) return KEY_unless;
4311 if (strEQ(d,"unpack")) return -KEY_unpack;
4312 if (strEQ(d,"unlink")) return -KEY_unlink;
4315 if (strEQ(d,"unshift")) return KEY_unshift;
4316 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4321 if (strEQ(d,"values")) return -KEY_values;
4322 if (strEQ(d,"vec")) return -KEY_vec;
4327 if (strEQ(d,"warn")) return -KEY_warn;
4328 if (strEQ(d,"wait")) return -KEY_wait;
4331 if (strEQ(d,"while")) return KEY_while;
4332 if (strEQ(d,"write")) return -KEY_write;
4335 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4338 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4343 if (len == 1) return -KEY_x;
4344 if (strEQ(d,"xor")) return -KEY_xor;
4347 if (len == 1) return KEY_y;
4356 checkcomma(s,name,what)
4363 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4365 for (w = s+2; *w && level; w++) {
4372 for (; *w && isSPACE(*w); w++) ;
4373 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4374 warn("%s (...) interpreted as function",name);
4376 while (s < bufend && isSPACE(*s))
4380 while (s < bufend && isSPACE(*s))
4382 if (isIDFIRST(*s)) {
4386 while (s < bufend && isSPACE(*s))
4391 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4395 croak("No comma allowed after %s", what);
4401 scan_word(s, dest, destlen, allow_package, slp)
4408 register char *d = dest;
4409 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4412 croak(ident_too_long);
4415 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4420 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4433 scan_ident(s, send, dest, destlen, ck_uni)
4435 register char *send;
4445 if (lex_brackets == 0)
4450 e = d + destlen - 3; /* two-character token, ending NUL */
4452 while (isDIGIT(*s)) {
4454 croak(ident_too_long);
4461 croak(ident_too_long);
4464 else if (*s == '\'' && isIDFIRST(s[1])) {
4469 else if (*s == ':' && s[1] == ':') {
4480 if (lex_state != LEX_NORMAL)
4481 lex_state = LEX_INTERPENDMAYBE;
4484 if (*s == '$' && s[1] &&
4485 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4487 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4488 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4501 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4506 if (isSPACE(s[-1])) {
4509 if (ch != ' ' && ch != '\t') {
4515 if (isIDFIRST(*d)) {
4517 while (isALNUM(*s) || *s == ':')
4520 while (s < send && (*s == ' ' || *s == '\t')) s++;
4521 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4522 if (dowarn && keyword(dest, d - dest)) {
4523 char *brack = *s == '[' ? "[...]" : "{...}";
4524 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4525 funny, dest, brack, funny, dest, brack);
4527 lex_fakebrack = lex_brackets+1;
4529 lex_brackstack[lex_brackets++] = XOPERATOR;
4535 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4536 lex_state = LEX_INTERPEND;
4539 if (dowarn && lex_state == LEX_NORMAL &&
4540 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4541 warn("Ambiguous use of %c{%s} resolved to %c%s",
4542 funny, dest, funny, dest);
4545 s = bracket; /* let the parser handle it */
4549 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4550 lex_state = LEX_INTERPEND;
4554 void pmflag(pmfl,ch)
4561 *pmfl |= PMf_GLOBAL;
4563 *pmfl |= PMf_CONTINUE;
4567 *pmfl |= PMf_MULTILINE;
4569 *pmfl |= PMf_SINGLELINE;
4571 *pmfl |= PMf_EXTENDED;
4581 s = scan_str(start);
4584 SvREFCNT_dec(lex_stuff);
4586 croak("Search pattern not terminated");
4589 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4590 if (multi_open == '?')
4591 pm->op_pmflags |= PMf_ONCE;
4592 while (*s && strchr("iogcmsx", *s))
4593 pmflag(&pm->op_pmflags,*s++);
4594 pm->op_pmpermflags = pm->op_pmflags;
4597 yylval.ival = OP_MATCH;
4610 yylval.ival = OP_NULL;
4612 s = scan_str(start);
4616 SvREFCNT_dec(lex_stuff);
4618 croak("Substitution pattern not terminated");
4621 if (s[-1] == multi_open)
4624 first_start = multi_start;
4628 SvREFCNT_dec(lex_stuff);
4631 SvREFCNT_dec(lex_repl);
4633 croak("Substitution replacement not terminated");
4635 multi_start = first_start; /* so whole substitution is taken together */
4637 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4638 while (*s && strchr("iogcmsex", *s)) {
4644 pmflag(&pm->op_pmflags,*s++);
4649 pm->op_pmflags |= PMf_EVAL;
4650 repl = newSVpv("",0);
4652 sv_catpv(repl, es ? "eval " : "do ");
4653 sv_catpvn(repl, "{ ", 2);
4654 sv_catsv(repl, lex_repl);
4655 sv_catpvn(repl, " };", 2);
4656 SvCOMPILED_on(repl);
4657 SvREFCNT_dec(lex_repl);
4661 pm->op_pmpermflags = pm->op_pmflags;
4663 yylval.ival = OP_SUBST;
4671 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4672 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4674 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4675 pm->op_pmflags |= PMf_SCANFIRST;
4676 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4677 pm->op_pmslen = SvCUR(pm->op_pmshort);
4679 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4680 if (pm->op_pmshort &&
4681 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4683 if (pm->op_pmflags & PMf_SCANFIRST) {
4684 SvREFCNT_dec(pm->op_pmshort);
4685 pm->op_pmshort = Nullsv;
4688 SvREFCNT_dec(pm->op_pmregexp->regmust);
4689 pm->op_pmregexp->regmust = Nullsv;
4693 /* promote the better string */
4694 if ((!pm->op_pmshort &&
4695 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4696 ((pm->op_pmflags & PMf_SCANFIRST) &&
4697 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4698 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4699 pm->op_pmshort = pm->op_pmregexp->regmust;
4700 pm->op_pmslen = SvCUR(pm->op_pmshort);
4701 pm->op_pmregexp->regmust = Nullsv;
4702 pm->op_pmflags |= PMf_SCANFIRST;
4718 yylval.ival = OP_NULL;
4720 s = scan_str(start);
4723 SvREFCNT_dec(lex_stuff);
4725 croak("Translation pattern not terminated");
4727 if (s[-1] == multi_open)
4733 SvREFCNT_dec(lex_stuff);
4736 SvREFCNT_dec(lex_repl);
4738 croak("Translation replacement not terminated");
4741 New(803,tbl,256,short);
4742 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4744 complement = delete = squash = 0;
4745 while (*s == 'c' || *s == 'd' || *s == 's') {
4747 complement = OPpTRANS_COMPLEMENT;
4749 delete = OPpTRANS_DELETE;
4751 squash = OPpTRANS_SQUASH;
4754 op->op_private = delete|squash|complement;
4757 yylval.ival = OP_TRANS;
4766 I32 op_type = OP_SCALAR;
4773 int outer = (rsfp && !lex_inwhat);
4777 e = tokenbuf + sizeof tokenbuf - 1;
4780 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4781 if (*peek && strchr("`'\"",*peek)) {
4784 s = delimcpy(d, e, s, bufend, term, &len);
4795 deprecate("bare << to mean <<\"\"");
4796 for (; isALNUM(*s); s++) {
4801 if (d >= tokenbuf + sizeof tokenbuf - 1)
4802 croak("Delimiter for here document is too long");
4807 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4808 herewas = newSVpv(s,bufend-s);
4810 s--, herewas = newSVpv(s,d-s);
4811 s += SvCUR(herewas);
4813 tmpstr = NEWSV(87,80);
4814 sv_upgrade(tmpstr, SVt_PVIV);
4819 else if (term == '`') {
4820 op_type = OP_BACKTICK;
4821 SvIVX(tmpstr) = '\\';
4825 multi_start = curcop->cop_line;
4826 multi_open = multi_close = '<';
4830 while (s < bufend &&
4831 (*s != term || memNE(s,tokenbuf,len)) ) {
4836 curcop->cop_line = multi_start;
4837 missingterm(tokenbuf);
4839 sv_setpvn(tmpstr,d+1,s-d);
4841 sv_catpvn(herewas,s,bufend-s);
4842 sv_setsv(linestr,herewas);
4843 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4844 bufend = SvPVX(linestr) + SvCUR(linestr);
4847 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4848 while (s >= bufend) { /* multiple line string? */
4850 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4851 curcop->cop_line = multi_start;
4852 missingterm(tokenbuf);
4855 if (PERLDB_LINE && curstash != debstash) {
4856 SV *sv = NEWSV(88,0);
4858 sv_upgrade(sv, SVt_PVMG);
4859 sv_setsv(sv,linestr);
4860 av_store(GvAV(curcop->cop_filegv),
4861 (I32)curcop->cop_line,sv);
4863 bufend = SvPVX(linestr) + SvCUR(linestr);
4864 if (*s == term && memEQ(s,tokenbuf,len)) {
4867 sv_catsv(linestr,herewas);
4868 bufend = SvPVX(linestr) + SvCUR(linestr);
4872 sv_catsv(tmpstr,linestr);
4875 multi_end = curcop->cop_line;
4877 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4878 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4879 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4881 SvREFCNT_dec(herewas);
4883 yylval.ival = op_type;
4888 scan_inputsymbol(start)
4891 register char *s = start;
4897 e = tokenbuf + sizeof tokenbuf;
4898 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4899 if (len >= sizeof tokenbuf)
4900 croak("Excessively long <> operator");
4902 croak("Unterminated <> operator");
4904 if (*d == '$' && d[1]) d++;
4905 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4907 if (d - tokenbuf != len) {
4908 yylval.ival = OP_GLOB;
4910 s = scan_str(start);
4912 croak("Glob not terminated");
4918 (void)strcpy(d,"ARGV");
4921 if (tmp = pad_findmy(d)) {
4922 OP *op = newOP(OP_PADSV, 0);
4924 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4927 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4928 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4929 newUNOP(OP_RV2GV, 0,
4930 newUNOP(OP_RV2SV, 0,
4931 newGVOP(OP_GV, 0, gv))));
4933 yylval.ival = OP_NULL;
4936 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4937 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4938 yylval.ival = OP_NULL;
4950 register char *s = start;
4959 multi_start = curcop->cop_line;
4961 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4966 sv_upgrade(sv, SVt_PVIV);
4968 (void)SvPOK_only(sv); /* validate pointer */
4971 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4972 to = SvPVX(sv)+SvCUR(sv);
4973 if (multi_open == multi_close) {
4974 for (; s < bufend; s++,to++) {
4975 if (*s == '\n' && !rsfp)
4977 if (*s == '\\' && s+1 < bufend && term != '\\') {
4983 else if (*s == term)
4989 for (; s < bufend; s++,to++) {
4990 if (*s == '\n' && !rsfp)
4992 if (*s == '\\' && s+1 < bufend) {
4993 if ((s[1] == multi_open) || (s[1] == multi_close))
4998 else if (*s == multi_close && --brackets <= 0)
5000 else if (*s == multi_open)
5006 SvCUR_set(sv, to - SvPVX(sv));
5008 if (s < bufend) break; /* string ends on this line? */
5011 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5013 curcop->cop_line = multi_start;
5017 if (PERLDB_LINE && curstash != debstash) {
5018 SV *sv = NEWSV(88,0);
5020 sv_upgrade(sv, SVt_PVMG);
5021 sv_setsv(sv,linestr);
5022 av_store(GvAV(curcop->cop_filegv),
5023 (I32)curcop->cop_line, sv);
5025 bufend = SvPVX(linestr) + SvCUR(linestr);
5027 multi_end = curcop->cop_line;
5029 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5030 SvLEN_set(sv, SvCUR(sv) + 1);
5031 Renew(SvPVX(sv), SvLEN(sv), char);
5044 register char *s = start;
5052 static char number_too_long[] = "Number too long";
5056 croak("panic: scan_num");
5061 bool overflowed = FALSE;
5067 else if (s[1] == '.')
5083 yyerror("Illegal octal digit");
5085 case '0': case '1': case '2': case '3': case '4':
5086 case '5': case '6': case '7':
5089 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5090 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5096 if (!overflowed && (n >> shift) != u) {
5097 warn("Integer overflow in %s number",
5098 (shift == 4) ? "hex" : "octal");
5110 case '1': case '2': case '3': case '4': case '5':
5111 case '6': case '7': case '8': case '9': case '.':
5114 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5116 while (isDIGIT(*s) || *s == '_') {
5118 if (dowarn && lastub && s - lastub != 3)
5119 warn("Misplaced _ in number");
5124 croak(number_too_long);
5128 if (dowarn && lastub && s - lastub != 3)
5129 warn("Misplaced _ in number");
5130 if (*s == '.' && s[1] != '.') {
5133 for (; isDIGIT(*s) || *s == '_'; s++) {
5135 croak(number_too_long);
5140 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5143 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5144 if (*s == '+' || *s == '-')
5146 while (isDIGIT(*s)) {
5148 croak(number_too_long);
5154 SET_NUMERIC_STANDARD();
5155 value = atof(tokenbuf);
5157 if (!floatit && (double)tryiv == value)
5158 sv_setiv(sv, tryiv);
5160 sv_setnv(sv, value);
5164 yylval.opval = newSVOP(OP_CONST, 0, sv);
5175 SV *stuff = newSVpv("",0);
5176 bool needargs = FALSE;
5179 if (*s == '.' || *s == '}') {
5181 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5185 if (in_eval && !rsfp) {
5186 eol = strchr(s,'\n');
5191 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5193 for (t = s; t < eol; t++) {
5194 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5196 goto enough; /* ~~ must be first line in formline */
5198 if (*t == '@' || *t == '^')
5201 sv_catpvn(stuff, s, eol-s);
5205 s = filter_gets(linestr, rsfp, 0);
5206 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5207 bufend = bufptr + SvCUR(linestr);
5210 yyerror("Format not terminated");
5220 lex_state = LEX_NORMAL;
5221 nextval[nexttoke].ival = 0;
5225 lex_state = LEX_FORMLINE;
5226 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5228 nextval[nexttoke].ival = OP_FORMLINE;
5232 SvREFCNT_dec(stuff);
5244 cshlen = strlen(cshname);
5249 start_subparse(is_format, flags)
5253 I32 oldsavestack_ix = savestack_ix;
5254 CV* outsidecv = compcv;
5258 assert(SvTYPE(compcv) == SVt_PVCV);
5265 SAVESPTR(comppad_name);
5267 SAVEI32(comppad_name_fill);
5268 SAVEI32(min_intro_pending);
5269 SAVEI32(max_intro_pending);
5270 SAVEI32(pad_reset_pending);
5272 compcv = (CV*)NEWSV(1104,0);
5273 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5274 CvFLAGS(compcv) |= flags;
5277 comppad_name = newAV();
5278 comppad_name_fill = 0;
5279 min_intro_pending = 0;
5280 av_push(comppad, Nullsv);
5281 curpad = AvARRAY(comppad);
5283 subline = curcop->cop_line;
5285 comppadlist = newAV();
5286 AvREAL_off(comppadlist);
5287 av_store(comppadlist, 0, (SV*)comppad_name);
5288 av_store(comppadlist, 1, (SV*)comppad);
5290 CvPADLIST(compcv) = comppadlist;
5291 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5293 return oldsavestack_ix;
5312 char *context = NULL;
5316 if (!yychar || (yychar == ';' && !rsfp))
5318 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5319 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5320 while (isSPACE(*oldoldbufptr))
5322 context = oldoldbufptr;
5323 contlen = bufptr - oldoldbufptr;
5325 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5326 oldbufptr != bufptr) {
5327 while (isSPACE(*oldbufptr))
5329 context = oldbufptr;
5330 contlen = bufptr - oldbufptr;
5332 else if (yychar > 255)
5333 where = "next token ???";
5334 else if ((yychar & 127) == 127) {
5335 if (lex_state == LEX_NORMAL ||
5336 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5337 where = "at end of line";
5339 where = "within pattern";
5341 where = "within string";
5344 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5346 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5347 else if (isPRINT_LC(yychar))
5348 sv_catpvf(where_sv, "%c", yychar);
5350 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5351 where = SvPVX(where_sv);
5353 msg = sv_2mortal(newSVpv(s, 0));
5354 sv_catpvf(msg, " at %_ line %ld, ",
5355 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5357 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5359 sv_catpvf(msg, "%s\n", where);
5360 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5362 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5363 (int)multi_open,(int)multi_close,(long)multi_start);
5369 sv_catsv(GvSV(errgv), msg);
5371 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5372 if (++error_count >= 10)
5373 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));