3 * Copyright (c) 1991-1994, 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, I32 ck_uni));
26 static char *scan_inputsymbol _((char *start));
27 static char *scan_pat _((char *start));
28 static char *scan_str _((char *start));
29 static char *scan_subst _((char *start));
30 static char *scan_trans _((char *start));
31 static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
32 static char *skipspace _((char *s));
33 static void checkcomma _((char *s, char *name, char *what));
34 static void force_ident _((char *s, int kind));
35 static void incline _((char *s));
36 static int intuit_method _((char *s, GV *gv));
37 static int intuit_more _((char *s));
38 static I32 lop _((I32 f, expectation x, char *s));
39 static void missingterm _((char *s));
40 static void no_op _((char *what, char *s));
41 static void set_csh _((void));
42 static I32 sublex_done _((void));
43 static I32 sublex_push _((void));
44 static I32 sublex_start _((void));
46 static int uni _((I32 f, char *s));
48 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
49 static void restore_rsfp _((void *f));
51 static char *linestart; /* beg. of most recently read line */
53 static char pending_ident; /* pending identifier lookup */
56 I32 super_state; /* lexer state to save */
57 I32 sub_inwhat; /* "lex_inwhat" to use */
58 OP *sub_op; /* "lex_op" to use */
61 /* The following are arranged oddly so that the guard on the switch statement
62 * can get by with a single comparison (if the compiler is smart enough).
66 #define LEX_INTERPNORMAL 9
67 #define LEX_INTERPCASEMOD 8
68 #define LEX_INTERPPUSH 7
69 #define LEX_INTERPSTART 6
70 #define LEX_INTERPEND 5
71 #define LEX_INTERPENDMAYBE 4
72 #define LEX_INTERPCONCAT 3
73 #define LEX_INTERPCONST 2
74 #define LEX_FORMLINE 1
75 #define LEX_KNOWNEXT 0
84 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
86 # include <unistd.h> /* Needed for execv() */
99 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
101 #define TOKEN(retval) return (bufptr = s,(int)retval)
102 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
103 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
104 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
105 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
106 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
107 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
108 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
109 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
110 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
111 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
112 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
113 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
114 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
115 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
116 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
117 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
118 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
119 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
120 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
122 /* This bit of chicanery makes a unary function followed by
123 * a parenthesis into a function with one argument, highest precedence.
125 #define UNI(f) return(yylval.ival = f, \
128 last_uni = oldbufptr, \
130 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
132 #define UNIBRACK(f) return(yylval.ival = f, \
134 last_uni = oldbufptr, \
135 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
137 /* grandfather return to old style */
138 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
144 if (*bufptr == '=') {
146 if (toketype == ANDAND)
147 yylval.ival = OP_ANDASSIGN;
148 else if (toketype == OROR)
149 yylval.ival = OP_ORASSIGN;
161 char *oldbp = bufptr;
162 bool is_first = (oldbufptr == linestart);
164 sprintf(tmpbuf, "%s found where operator expected", what);
167 warn("\t(Missing semicolon on previous line?)\n");
168 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
170 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
171 if (t < bufptr && isSPACE(*t))
172 warn("\t(Do you need to predeclare %.*s?)\n",
173 t - oldoldbufptr, oldoldbufptr);
177 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
188 char *nl = strrchr(s,'\n');
192 else if (multi_close < 32 || multi_close == 127) {
194 tmpbuf[1] = toCTRL(multi_close);
200 *tmpbuf = multi_close;
204 q = strchr(s,'"') ? '\'' : '"';
205 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
213 warn("Use of %s is deprecated", s);
219 deprecate("comma-less variable list");
230 SAVEI32(lex_brackets);
231 SAVEI32(lex_fakebrack);
232 SAVEI32(lex_casemods);
237 SAVEI16(curcop->cop_line);
241 SAVEPPTR(oldoldbufptr);
244 SAVEPPTR(lex_brackstack);
245 SAVEPPTR(lex_casestack);
246 SAVEDESTRUCTOR(restore_rsfp, rsfp);
248 lex_state = LEX_NORMAL;
253 New(899, lex_brackstack, 120, char);
254 New(899, lex_casestack, 12, char);
255 SAVEFREEPV(lex_brackstack);
256 SAVEFREEPV(lex_casestack);
258 *lex_casestack = '\0';
262 SvREFCNT_dec(lex_stuff);
265 SvREFCNT_dec(lex_repl);
270 if (SvREADONLY(linestr))
271 linestr = sv_2mortal(newSVsv(linestr));
272 s = SvPV(linestr, len);
273 if (len && s[len-1] != ';') {
274 if (!(SvFLAGS(linestr) & SVs_TEMP))
275 linestr = sv_2mortal(newSVsv(linestr));
276 sv_catpvn(linestr, "\n;", 2);
279 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
280 bufend = bufptr + SvCUR(linestr);
282 rs = newSVpv("\n", 1);
296 PerlIO *fp = (PerlIO*)f;
298 if (rsfp == PerlIO_stdin())
299 PerlIO_clearerr(rsfp);
300 else if (rsfp && (rsfp != fp))
317 while (*s == ' ' || *s == '\t') s++;
318 if (strnEQ(s, "line ", 5)) {
327 while (*s == ' ' || *s == '\t')
329 if (*s == '"' && (t = strchr(s+1, '"')))
333 return; /* false alarm */
334 for (t = s; !isSPACE(*t); t++) ;
339 curcop->cop_filegv = gv_fetchfile(s);
341 curcop->cop_filegv = gv_fetchfile(origfilename);
343 curcop->cop_line = atoi(n)-1;
350 if (lex_formbrack && lex_brackets <= lex_formbrack) {
351 while (s < bufend && (*s == ' ' || *s == '\t'))
357 while (s < bufend && isSPACE(*s))
359 if (s < bufend && *s == '#') {
360 while (s < bufend && *s != '\n')
365 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
367 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
368 if (minus_n || minus_p) {
369 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
370 sv_catpv(linestr,";}");
371 minus_n = minus_p = 0;
374 sv_setpv(linestr,";");
375 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
376 bufend = SvPVX(linestr) + SvCUR(linestr);
377 if (preprocess && !in_eval)
378 (void)my_pclose(rsfp);
379 else if ((PerlIO*)rsfp == PerlIO_stdin())
380 PerlIO_clearerr(rsfp);
382 (void)PerlIO_close(rsfp);
386 linestart = bufptr = s + prevlen;
387 bufend = s + SvCUR(linestr);
390 if (perldb && curstash != debstash) {
391 SV *sv = NEWSV(85,0);
393 sv_upgrade(sv, SVt_PVMG);
394 sv_setpvn(sv,bufptr,bufend-bufptr);
395 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
406 if (oldoldbufptr != last_uni)
408 while (isSPACE(*last_uni))
410 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
411 if ((t = strchr(s, '(')) && t < bufptr)
415 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
422 #define UNI(f) return uni(f,s)
432 last_uni = oldbufptr;
443 #endif /* CRIPPLED_CC */
445 #define LOP(f,x) return lop(f,x,s)
450 (I32 f, expectation x, char *s)
456 #endif /* CAN_PROTOTYPE */
462 last_lop = oldbufptr;
479 nexttype[nexttoke] = type;
481 if (lex_state != LEX_KNOWNEXT) {
482 lex_defer = lex_state;
484 lex_state = LEX_KNOWNEXT;
489 force_word(start,token,check_keyword,allow_pack,allow_tick)
490 register char *start;
499 start = skipspace(start);
502 (allow_pack && *s == ':') ||
503 (allow_tick && *s == '\'') )
505 s = scan_word(s, tokenbuf, allow_pack, &len);
506 if (check_keyword && keyword(tokenbuf, len))
508 if (token == METHOD) {
518 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
519 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
531 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
532 nextval[nexttoke].opval = op;
535 op->op_private = OPpCONST_ENTERED;
536 /* XXX see note in pp_entereval() for why we forgo typo
537 warnings if the symbol must be introduced in an eval.
539 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
540 kind == '$' ? SVt_PV :
541 kind == '@' ? SVt_PVAV :
542 kind == '%' ? SVt_PVHV :
553 OP *version = Nullop;
557 /* default VERSION number -- GBARR */
562 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
563 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
565 /* real VERSION number -- GBARR */
566 version = yylval.opval;
570 /* NOTE: The parser sees the package name and the VERSION swapped */
571 nextval[nexttoke].opval = version;
589 s = SvPV_force(sv, len);
593 while (s < send && *s != '\\')
600 if (s + 1 < send && (s[1] == '\\'))
601 s++; /* all that, just for this */
606 SvCUR_set(sv, d - SvPVX(sv));
614 register I32 op_type = yylval.ival;
616 if (op_type == OP_NULL) {
617 yylval.opval = lex_op;
621 if (op_type == OP_CONST || op_type == OP_READLINE) {
622 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
627 sublex_info.super_state = lex_state;
628 sublex_info.sub_inwhat = op_type;
629 sublex_info.sub_op = lex_op;
630 lex_state = LEX_INTERPPUSH;
634 yylval.opval = lex_op;
647 lex_state = sublex_info.super_state;
649 SAVEI32(lex_brackets);
650 SAVEI32(lex_fakebrack);
651 SAVEI32(lex_casemods);
656 SAVEI16(curcop->cop_line);
659 SAVEPPTR(oldoldbufptr);
662 SAVEPPTR(lex_brackstack);
663 SAVEPPTR(lex_casestack);
668 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
669 bufend += SvCUR(linestr);
675 New(899, lex_brackstack, 120, char);
676 New(899, lex_casestack, 12, char);
677 SAVEFREEPV(lex_brackstack);
678 SAVEFREEPV(lex_casestack);
680 *lex_casestack = '\0';
682 lex_state = LEX_INTERPCONCAT;
683 curcop->cop_line = multi_start;
685 lex_inwhat = sublex_info.sub_inwhat;
686 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
687 lex_inpat = sublex_info.sub_op;
699 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
703 if (lex_casemods) { /* oops, we've got some unbalanced parens */
704 lex_state = LEX_INTERPCASEMOD;
708 /* Is there a right-hand side to take care of? */
709 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
712 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
713 bufend += SvCUR(linestr);
719 *lex_casestack = '\0';
721 if (SvCOMPILED(lex_repl)) {
722 lex_state = LEX_INTERPNORMAL;
726 lex_state = LEX_INTERPCONCAT;
732 bufend = SvPVX(linestr);
733 bufend += SvCUR(linestr);
743 register char *send = bufend;
744 SV *sv = NEWSV(93, send - start);
745 register char *s = start;
746 register char *d = SvPVX(sv);
747 bool dorange = FALSE;
751 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
752 : (lex_inwhat & OP_TRANS)
756 while (s < send || dorange) {
757 if (lex_inwhat == OP_TRANS) {
762 SvGROW(sv, SvLEN(sv) + 256);
766 for (i = (U8)*d; i <= max; i++)
771 else if (*s == '-' && s+1 < send && s != start) {
776 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
777 while (s < send && *s != ')')
780 else if (*s == '#' && lex_inpat &&
781 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
782 while (s+1 < send && *s != '\n')
785 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
787 else if (*s == '$') {
788 if (!lex_inpat) /* not a regexp, so $ must be var */
790 if (s + 1 < send && !strchr(")| \n\t", s[1]))
791 break; /* in regexp, $ might be tail anchor */
793 if (*s == '\\' && s+1 < send) {
795 if (*s && strchr(leave, *s)) {
800 if (lex_inwhat == OP_SUBST && !lex_inpat &&
801 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
804 warn("\\%c better written as $%c", *s, *s);
808 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
814 if (lex_inwhat == OP_TRANS) {
822 case '0': case '1': case '2': case '3':
823 case '4': case '5': case '6': case '7':
824 *d++ = scan_oct(s, 3, &len);
828 *d++ = scan_hex(++s, 2, &len);
864 SvCUR_set(sv, d - SvPVX(sv));
867 if (SvCUR(sv) + 5 < SvLEN(sv)) {
868 SvLEN_set(sv, SvCUR(sv) + 1);
869 Renew(SvPVX(sv), SvLEN(sv), char);
872 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
878 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
885 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
887 if (*s != '{' && *s != '[')
892 /* In a pattern, so maybe we have {n,m}. */
909 /* On the other hand, maybe we have a character class */
912 if (*s == ']' || *s == '^')
915 int weight = 2; /* let's weigh the evidence */
917 unsigned char un_char = 0, last_un_char;
918 char *send = strchr(s,']');
921 if (!send) /* has to be an expression */
927 else if (isDIGIT(*s)) {
929 if (isDIGIT(s[1]) && s[2] == ']')
935 for (; s < send; s++) {
936 last_un_char = un_char;
937 un_char = (unsigned char)*s;
942 weight -= seen[un_char] * 10;
944 scan_ident(s,send,tmpbuf,FALSE);
945 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
950 else if (*s == '$' && s[1] &&
951 strchr("[#!%*<>()-=",s[1])) {
952 if (/*{*/ strchr("])} =",s[2]))
961 if (strchr("wds]",s[1]))
963 else if (seen['\''] || seen['"'])
965 else if (strchr("rnftbxcav",s[1]))
967 else if (isDIGIT(s[1])) {
969 while (s[1] && isDIGIT(s[1]))
979 if (strchr("aA01! ",last_un_char))
981 if (strchr("zZ79~",s[1]))
985 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
986 isALPHA(*s) && s[1] && isALPHA(s[1])) {
991 if (keyword(tmpbuf, d - tmpbuf))
994 if (un_char == last_un_char + 1)
996 weight -= seen[un_char];
1001 if (weight >= 0) /* probably a character class */
1009 intuit_method(start,gv)
1013 char *s = start + (*start == '$');
1024 s = scan_word(s, tmpbuf, TRUE, &len);
1025 if (*start == '$') {
1026 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1031 return *s == '(' ? FUNCMETH : METHOD;
1033 if (!keyword(tmpbuf, len)) {
1034 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1035 if (indirgv && GvCVu(indirgv))
1037 /* filehandle or package name makes it a method */
1038 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1040 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1041 return 0; /* no assumptions -- "=>" quotes bearword */
1042 nextval[nexttoke].opval =
1043 (OP*)newSVOP(OP_CONST, 0,
1045 nextval[nexttoke].opval->op_private =
1050 return *s == '(' ? FUNCMETH : METHOD;
1060 char *pdb = getenv("PERL5DB");
1064 return "BEGIN { require 'perl5db.pl' }";
1070 /* Encoded script support. filter_add() effectively inserts a
1071 * 'pre-processing' function into the current source input stream.
1072 * Note that the filter function only applies to the current source file
1073 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1075 * The datasv parameter (which may be NULL) can be used to pass
1076 * private data to this instance of the filter. The filter function
1077 * can recover the SV using the FILTER_DATA macro and use it to
1078 * store private buffers and state information.
1080 * The supplied datasv parameter is upgraded to a PVIO type
1081 * and the IoDIRP field is used to store the function pointer.
1082 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1083 * private use must be set using malloc'd pointers.
1085 static int filter_debug = 0;
1088 filter_add(funcp, datasv)
1092 if (!funcp){ /* temporary handy debugging hack to be deleted */
1093 filter_debug = atoi((char*)datasv);
1097 rsfp_filters = newAV();
1100 if (!SvUPGRADE(datasv, SVt_PVIO))
1101 die("Can't upgrade filter_add data to SVt_PVIO");
1102 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1104 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1105 av_unshift(rsfp_filters, 1);
1106 av_store(rsfp_filters, 0, datasv) ;
1111 /* Delete most recently added instance of this filter function. */
1117 warn("filter_del func %p", funcp);
1118 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1120 /* if filter is on top of stack (usual case) just pop it off */
1121 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1122 /* sv_free(av_pop(rsfp_filters)); */
1123 sv_free(av_shift(rsfp_filters));
1127 /* we need to search for the correct entry and clear it */
1128 die("filter_del can only delete in reverse order (currently)");
1132 /* Invoke the n'th filter function for the current rsfp. */
1134 filter_read(idx, buf_sv, maxlen)
1137 int maxlen; /* 0 = read one text line */
1144 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1145 /* Provide a default input filter to make life easy. */
1146 /* Note that we append to the line. This is handy. */
1148 warn("filter_read %d: from rsfp\n", idx);
1152 int old_len = SvCUR(buf_sv) ;
1154 /* ensure buf_sv is large enough */
1155 SvGROW(buf_sv, old_len + maxlen) ;
1156 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1157 if (PerlIO_error(rsfp))
1158 return -1; /* error */
1160 return 0 ; /* end of file */
1162 SvCUR_set(buf_sv, old_len + len) ;
1165 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1166 if (PerlIO_error(rsfp))
1167 return -1; /* error */
1169 return 0 ; /* end of file */
1172 return SvCUR(buf_sv);
1174 /* Skip this filter slot if filter has been deleted */
1175 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1177 warn("filter_read %d: skipped (filter deleted)\n", idx);
1178 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1180 /* Get function pointer hidden within datasv */
1181 funcp = (filter_t)IoDIRP(datasv);
1183 warn("filter_read %d: via function %p (%s)\n",
1184 idx, funcp, SvPV(datasv,na));
1185 /* Call function. The function is expected to */
1186 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1187 /* Return: <0:error, =0:eof, >0:not eof */
1188 return (*funcp)(idx, buf_sv, maxlen);
1192 filter_gets(sv,fp, append)
1194 register PerlIO *fp;
1200 SvCUR_set(sv, 0); /* start with empty line */
1201 if (FILTER_READ(0, sv, 0) > 0)
1202 return ( SvPVX(sv) ) ;
1207 return (sv_gets(sv, fp, append));
1213 static char* exp_name[] =
1214 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1217 EXT int yychar; /* last token */
1227 if (pending_ident) {
1228 char pit = pending_ident;
1232 if (strchr(tokenbuf,':'))
1233 croak(no_myglob,tokenbuf);
1234 yylval.opval = newOP(OP_PADANY, 0);
1235 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1239 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1240 if (last_lop_op == OP_SORT &&
1241 tokenbuf[0] == '$' &&
1242 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1245 for (d = in_eval ? oldoldbufptr : linestart;
1246 d < bufend && *d != '\n';
1249 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1250 croak("Can't use \"my %s\" in sort comparison",
1256 yylval.opval = newOP(OP_PADANY, 0);
1257 yylval.opval->op_targ = tmp;
1261 /* Force them to make up their mind on "@foo". */
1262 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1263 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1264 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
1266 sprintf(tmpbuf, "Literal %s now requires backslash", tokenbuf);
1271 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1272 yylval.opval->op_private = OPpCONST_ENTERED;
1273 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1274 ((tokenbuf[0] == '$') ? SVt_PV
1275 : (tokenbuf[0] == '@') ? SVt_PVAV
1280 switch (lex_state) {
1282 case LEX_NORMAL: /* Some compilers will produce faster */
1283 case LEX_INTERPNORMAL: /* code if we comment these out. */
1289 yylval = nextval[nexttoke];
1291 lex_state = lex_defer;
1292 expect = lex_expect;
1293 lex_defer = LEX_NORMAL;
1295 return(nexttype[nexttoke]);
1297 case LEX_INTERPCASEMOD:
1299 if (bufptr != bufend && *bufptr != '\\')
1300 croak("panic: INTERPCASEMOD");
1302 if (bufptr == bufend || bufptr[1] == 'E') {
1305 oldmod = lex_casestack[--lex_casemods];
1306 lex_casestack[lex_casemods] = '\0';
1307 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1309 lex_state = LEX_INTERPCONCAT;
1313 if (bufptr != bufend)
1315 lex_state = LEX_INTERPCONCAT;
1320 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1321 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1322 if (strchr("LU", *s) &&
1323 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1325 lex_casestack[--lex_casemods] = '\0';
1328 if (lex_casemods > 10) {
1329 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1330 if (newlb != lex_casestack) {
1332 lex_casestack = newlb;
1335 lex_casestack[lex_casemods++] = *s;
1336 lex_casestack[lex_casemods] = '\0';
1337 lex_state = LEX_INTERPCONCAT;
1338 nextval[nexttoke].ival = 0;
1341 nextval[nexttoke].ival = OP_LCFIRST;
1343 nextval[nexttoke].ival = OP_UCFIRST;
1345 nextval[nexttoke].ival = OP_LC;
1347 nextval[nexttoke].ival = OP_UC;
1349 nextval[nexttoke].ival = OP_QUOTEMETA;
1351 croak("panic: yylex");
1363 case LEX_INTERPPUSH:
1364 return sublex_push();
1366 case LEX_INTERPSTART:
1367 if (bufptr == bufend)
1368 return sublex_done();
1370 lex_dojoin = (*bufptr == '@');
1371 lex_state = LEX_INTERPNORMAL;
1373 nextval[nexttoke].ival = 0;
1375 force_ident("\"", '$');
1376 nextval[nexttoke].ival = 0;
1378 nextval[nexttoke].ival = 0;
1380 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1391 case LEX_INTERPENDMAYBE:
1392 if (intuit_more(bufptr)) {
1393 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1401 lex_state = LEX_INTERPCONCAT;
1405 case LEX_INTERPCONCAT:
1408 croak("panic: INTERPCONCAT");
1410 if (bufptr == bufend)
1411 return sublex_done();
1413 if (SvIVX(linestr) == '\'') {
1414 SV *sv = newSVsv(linestr);
1417 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1421 s = scan_const(bufptr);
1423 lex_state = LEX_INTERPCASEMOD;
1425 lex_state = LEX_INTERPSTART;
1429 nextval[nexttoke] = yylval;
1442 lex_state = LEX_NORMAL;
1443 s = scan_formline(bufptr);
1450 oldoldbufptr = oldbufptr;
1453 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1459 warn("Unrecognized character \\%03o ignored", *s++ & 255);
1463 goto fake_eof; /* emulate EOF on ^D or ^Z */
1469 yyerror("Missing right bracket");
1473 goto retry; /* ignore stray nulls */
1476 if (!in_eval && !preambled) {
1478 sv_setpv(linestr,incl_perldb());
1480 sv_catpv(linestr,";");
1482 while(AvFILL(preambleav) >= 0) {
1483 SV *tmpsv = av_shift(preambleav);
1484 sv_catsv(linestr, tmpsv);
1485 sv_catpv(linestr, ";");
1488 sv_free((SV*)preambleav);
1491 if (minus_n || minus_p) {
1492 sv_catpv(linestr, "LINE: while (<>) {");
1494 sv_catpv(linestr,"chomp;");
1498 if ( splitstr[0] == '/' ||
1499 splitstr[0] == '\'' ||
1500 splitstr[0] == '"' )
1501 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1503 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1504 sv_catpv(linestr,tmpbuf1);
1507 sv_catpv(linestr,"@F=split(' ');");
1510 sv_catpv(linestr, "\n");
1511 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1512 bufend = SvPVX(linestr) + SvCUR(linestr);
1513 if (perldb && curstash != debstash) {
1514 SV *sv = NEWSV(85,0);
1516 sv_upgrade(sv, SVt_PVMG);
1517 sv_setsv(sv,linestr);
1518 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1523 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1526 if (preprocess && !in_eval)
1527 (void)my_pclose(rsfp);
1528 else if ((PerlIO *)rsfp == PerlIO_stdin())
1529 PerlIO_clearerr(rsfp);
1531 (void)PerlIO_close(rsfp);
1534 if (!in_eval && (minus_n || minus_p)) {
1535 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1536 sv_catpv(linestr,";}");
1537 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1538 bufend = SvPVX(linestr) + SvCUR(linestr);
1539 minus_n = minus_p = 0;
1542 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1543 sv_setpv(linestr,"");
1544 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1547 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1550 /* Incest with pod. */
1551 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1552 sv_setpv(linestr, "");
1553 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1554 bufend = SvPVX(linestr) + SvCUR(linestr);
1559 } while (doextract);
1560 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1561 if (perldb && curstash != debstash) {
1562 SV *sv = NEWSV(85,0);
1564 sv_upgrade(sv, SVt_PVMG);
1565 sv_setsv(sv,linestr);
1566 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1568 bufend = SvPVX(linestr) + SvCUR(linestr);
1569 if (curcop->cop_line == 1) {
1570 while (s < bufend && isSPACE(*s))
1572 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1576 if (*s == '#' && *(s+1) == '!')
1578 #ifdef ALTERNATE_SHEBANG
1580 static char as[] = ALTERNATE_SHEBANG;
1581 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1582 d = s + (sizeof(as) - 1);
1584 #endif /* ALTERNATE_SHEBANG */
1593 while (*d && !isSPACE(*d))
1597 #ifdef ARG_ZERO_IS_SCRIPT
1598 if (ipathend > ipath) {
1600 * HP-UX (at least) sets argv[0] to the script name,
1601 * which makes $^X incorrect. And Digital UNIX and Linux,
1602 * at least, set argv[0] to the basename of the Perl
1603 * interpreter. So, having found "#!", we'll set it right.
1605 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1606 assert(SvPOK(x) || SvGMAGICAL(x));
1607 if (sv_eq(x, GvSV(curcop->cop_filegv)))
1608 sv_setpvn(x, ipath, ipathend - ipath);
1609 TAINT_NOT; /* $^X is always tainted, but that's OK */
1611 #endif /* ARG_ZERO_IS_SCRIPT */
1616 d = instr(s,"perl -");
1618 d = instr(s,"perl");
1619 #ifdef ALTERNATE_SHEBANG
1621 * If the ALTERNATE_SHEBANG on this system starts with a
1622 * character that can be part of a Perl expression, then if
1623 * we see it but not "perl", we're probably looking at the
1624 * start of Perl code, not a request to hand off to some
1625 * other interpreter. Similarly, if "perl" is there, but
1626 * not in the first 'word' of the line, we assume the line
1627 * contains the start of the Perl program.
1629 if (d && *s != '#') {
1631 while (*c && !strchr("; \t\r\n\f\v#", *c))
1634 d = Nullch; /* "perl" not in first word; ignore */
1636 *s = '#'; /* Don't try to parse shebang line */
1638 #endif /* ALTERNATE_SHEBANG */
1643 !instr(s,"indir") &&
1644 instr(origargv[0],"perl"))
1650 while (s < bufend && isSPACE(*s))
1653 Newz(899,newargv,origargc+3,char*);
1655 while (s < bufend && !isSPACE(*s))
1658 Copy(origargv+1, newargv+2, origargc+1, char*);
1663 execv(ipath, newargv);
1664 croak("Can't exec %s", ipath);
1667 int oldpdb = perldb;
1671 while (*d && !isSPACE(*d)) d++;
1672 while (*d == ' ' || *d == '\t') d++;
1675 while (d = moreswitches(d)) ;
1676 if (perldb && !oldpdb ||
1677 ( minus_n || minus_p ) && !(oldn || oldp) )
1678 /* if we have already added "LINE: while (<>) {",
1679 we must not do it again */
1681 sv_setpv(linestr, "");
1682 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1683 bufend = SvPVX(linestr) + SvCUR(linestr);
1686 (void)gv_fetchfile(origfilename);
1693 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1695 lex_state = LEX_FORMLINE;
1700 croak("Illegal character \\%03o (carriage return)", '\r');
1701 case ' ': case '\t': case '\f': case 013:
1706 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1708 while (s < d && *s != '\n')
1713 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1715 lex_state = LEX_FORMLINE;
1725 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1730 while (s < bufend && (*s == ' ' || *s == '\t'))
1733 if (strnEQ(s,"=>",2)) {
1735 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1736 (int)tmp, (int)tmp);
1737 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1738 OPERATOR('-'); /* unary minus */
1740 last_uni = oldbufptr;
1741 last_lop_op = OP_FTEREAD; /* good enough */
1743 case 'r': FTST(OP_FTEREAD);
1744 case 'w': FTST(OP_FTEWRITE);
1745 case 'x': FTST(OP_FTEEXEC);
1746 case 'o': FTST(OP_FTEOWNED);
1747 case 'R': FTST(OP_FTRREAD);
1748 case 'W': FTST(OP_FTRWRITE);
1749 case 'X': FTST(OP_FTREXEC);
1750 case 'O': FTST(OP_FTROWNED);
1751 case 'e': FTST(OP_FTIS);
1752 case 'z': FTST(OP_FTZERO);
1753 case 's': FTST(OP_FTSIZE);
1754 case 'f': FTST(OP_FTFILE);
1755 case 'd': FTST(OP_FTDIR);
1756 case 'l': FTST(OP_FTLINK);
1757 case 'p': FTST(OP_FTPIPE);
1758 case 'S': FTST(OP_FTSOCK);
1759 case 'u': FTST(OP_FTSUID);
1760 case 'g': FTST(OP_FTSGID);
1761 case 'k': FTST(OP_FTSVTX);
1762 case 'b': FTST(OP_FTBLK);
1763 case 'c': FTST(OP_FTCHR);
1764 case 't': FTST(OP_FTTTY);
1765 case 'T': FTST(OP_FTTEXT);
1766 case 'B': FTST(OP_FTBINARY);
1767 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1768 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1769 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1771 croak("Unrecognized file test: -%c", (int)tmp);
1778 if (expect == XOPERATOR)
1783 else if (*s == '>') {
1786 if (isIDFIRST(*s)) {
1787 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1795 if (expect == XOPERATOR)
1798 if (isSPACE(*s) || !isSPACE(*bufptr))
1800 OPERATOR('-'); /* unary minus */
1807 if (expect == XOPERATOR)
1812 if (expect == XOPERATOR)
1815 if (isSPACE(*s) || !isSPACE(*bufptr))
1821 if (expect != XOPERATOR) {
1822 s = scan_ident(s, bufend, tokenbuf, TRUE);
1824 force_ident(tokenbuf, '*');
1837 if (expect == XOPERATOR) {
1842 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1845 yyerror("Final % should be \\% or %name");
1848 pending_ident = '%';
1870 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1871 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1876 if (curcop->cop_line < copline)
1877 copline = curcop->cop_line;
1888 if (lex_brackets <= 0)
1889 yyerror("Unmatched right bracket");
1892 if (lex_state == LEX_INTERPNORMAL) {
1893 if (lex_brackets == 0) {
1894 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1895 lex_state = LEX_INTERPEND;
1902 if (lex_brackets > 100) {
1903 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1904 if (newlb != lex_brackstack) {
1906 lex_brackstack = newlb;
1911 if (lex_formbrack) {
1915 if (oldoldbufptr == last_lop)
1916 lex_brackstack[lex_brackets++] = XTERM;
1918 lex_brackstack[lex_brackets++] = XOPERATOR;
1919 OPERATOR(HASHBRACK);
1922 while (s < bufend && (*s == ' ' || *s == '\t'))
1926 if (d < bufend && *d == '-') {
1929 while (d < bufend && (*d == ' ' || *d == '\t'))
1932 if (d < bufend && isIDFIRST(*d)) {
1933 d = scan_word(d, tokenbuf + 1, FALSE, &len);
1934 while (d < bufend && (*d == ' ' || *d == '\t'))
1937 char minus = (tokenbuf[0] == '-');
1939 (keyword(tokenbuf + 1, len) ||
1940 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1941 perl_get_cv(tokenbuf + 1, FALSE) ))
1942 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1943 tokenbuf + !minus, tokenbuf + !minus);
1944 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1951 lex_brackstack[lex_brackets++] = XSTATE;
1955 lex_brackstack[lex_brackets++] = XOPERATOR;
1960 if (oldoldbufptr == last_lop)
1961 lex_brackstack[lex_brackets++] = XTERM;
1963 lex_brackstack[lex_brackets++] = XOPERATOR;
1966 OPERATOR(HASHBRACK);
1968 for (t = s; t < bufend && isALNUM(*t); t++) ;
1970 else if (*s == '\'' || *s == '"') {
1977 while (t < bufend && isSPACE(*t))
1979 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1980 OPERATOR(HASHBRACK);
1984 lex_brackstack[lex_brackets-1] = XSTATE;
1990 yylval.ival = curcop->cop_line;
1991 if (isSPACE(*s) || *s == '#')
1992 copline = NOLINE; /* invalidate current command line number */
1997 if (lex_brackets <= 0)
1998 yyerror("Unmatched right bracket");
2000 expect = (expectation)lex_brackstack[--lex_brackets];
2001 if (lex_brackets < lex_formbrack)
2003 if (lex_state == LEX_INTERPNORMAL) {
2004 if (lex_brackets == 0) {
2005 if (lex_fakebrack) {
2006 lex_state = LEX_INTERPEND;
2008 return yylex(); /* ignore fake brackets */
2010 if (*s == '-' && s[1] == '>')
2011 lex_state = LEX_INTERPENDMAYBE;
2012 else if (*s != '[' && *s != '{')
2013 lex_state = LEX_INTERPEND;
2016 if (lex_brackets < lex_fakebrack) {
2019 return yylex(); /* ignore fake brackets */
2029 if (expect == XOPERATOR) {
2030 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2038 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
2041 force_ident(tokenbuf, '&');
2045 yylval.ival = (OPpENTERSUB_AMPER<<8);
2064 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2065 warn("Reversed %c= operator",(int)tmp);
2067 if (expect == XSTATE && isALPHA(tmp) &&
2068 (s == linestart+1 || s[-2] == '\n') )
2070 if (in_eval && !rsfp) {
2075 if (strnEQ(s,"=cut",4)) {
2092 if (lex_brackets < lex_formbrack) {
2094 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2095 if (*t == '\n' || *t == '#') {
2113 if (expect != XOPERATOR) {
2114 if (s[1] != '<' && !strchr(s,'>'))
2117 s = scan_heredoc(s);
2119 s = scan_inputsymbol(s);
2120 TERM(sublex_start());
2125 SHop(OP_LEFT_SHIFT);
2139 SHop(OP_RIGHT_SHIFT);
2148 if (expect == XOPERATOR) {
2149 if (lex_formbrack && lex_brackets == lex_formbrack) {
2152 return ','; /* grandfather non-comma-format format */
2156 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2157 if (expect == XOPERATOR)
2158 no_op("Array length", bufptr);
2160 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2164 pending_ident = '#';
2168 if (expect == XOPERATOR)
2169 no_op("Scalar", bufptr);
2171 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2174 yyerror("Final $ should be \\$ or $name");
2178 /* This kludge not intended to be bulletproof. */
2179 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2180 yylval.opval = newSVOP(OP_CONST, 0,
2181 newSViv((IV)compiling.cop_arybase));
2182 yylval.opval->op_private = OPpCONST_ARYBASE;
2187 if (lex_state == LEX_NORMAL)
2190 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2196 isSPACE(*t) || isALNUM(*t) || *t == '$';
2199 bufptr = skipspace(bufptr);
2200 while (t < bufend && *t != ']')
2202 warn("Multidimensional syntax %.*s not supported",
2203 (t - bufptr) + 1, bufptr);
2207 else if (*s == '{') {
2209 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2210 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2214 for (t++; isSPACE(*t); t++) ;
2215 if (isIDFIRST(*t)) {
2216 t = scan_word(t, tmpbuf, TRUE, &len);
2217 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2218 warn("You need to quote \"%s\"", tmpbuf);
2225 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2226 bool islop = (last_lop == oldoldbufptr);
2227 if (!islop || last_lop_op == OP_GREPSTART)
2229 else if (strchr("$@\"'`q", *s))
2230 expect = XTERM; /* e.g. print $fh "foo" */
2231 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2232 expect = XTERM; /* e.g. print $fh &sub */
2233 else if (isDIGIT(*s))
2234 expect = XTERM; /* e.g. print $fh 3 */
2235 else if (*s == '.' && isDIGIT(s[1]))
2236 expect = XTERM; /* e.g. print $fh .3 */
2237 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2238 expect = XTERM; /* e.g. print $fh -1 */
2239 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2240 expect = XTERM; /* print $fh <<"EOF" */
2242 pending_ident = '$';
2246 if (expect == XOPERATOR)
2249 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2252 yyerror("Final @ should be \\@ or @name");
2255 if (lex_state == LEX_NORMAL)
2257 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2261 /* Warn about @ where they meant $. */
2263 if (*s == '[' || *s == '{') {
2265 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2267 if (*t == '}' || *t == ']') {
2269 bufptr = skipspace(bufptr);
2270 warn("Scalar value %.*s better written as $%.*s",
2271 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2276 pending_ident = '@';
2279 case '/': /* may either be division or pattern */
2280 case '?': /* may either be conditional or pattern */
2281 if (expect != XOPERATOR) {
2284 TERM(sublex_start());
2292 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2293 (s == linestart || s[-1] == '\n') ) {
2298 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2304 yylval.ival = OPf_SPECIAL;
2310 if (expect != XOPERATOR)
2315 case '0': case '1': case '2': case '3': case '4':
2316 case '5': case '6': case '7': case '8': case '9':
2318 if (expect == XOPERATOR)
2324 if (expect == XOPERATOR) {
2325 if (lex_formbrack && lex_brackets == lex_formbrack) {
2328 return ','; /* grandfather non-comma-format format */
2334 missingterm((char*)0);
2335 yylval.ival = OP_CONST;
2336 TERM(sublex_start());
2340 if (expect == XOPERATOR) {
2341 if (lex_formbrack && lex_brackets == lex_formbrack) {
2344 return ','; /* grandfather non-comma-format format */
2350 missingterm((char*)0);
2351 yylval.ival = OP_CONST;
2352 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2353 if (*d == '$' || *d == '@' || *d == '\\') {
2354 yylval.ival = OP_STRINGIFY;
2358 TERM(sublex_start());
2362 if (expect == XOPERATOR)
2363 no_op("Backticks",s);
2365 missingterm((char*)0);
2366 yylval.ival = OP_BACKTICK;
2368 TERM(sublex_start());
2372 if (dowarn && lex_inwhat && isDIGIT(*s))
2373 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2374 if (expect == XOPERATOR)
2375 no_op("Backslash",s);
2379 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2415 s = scan_word(s, tokenbuf, FALSE, &len);
2417 /* Some keywords can be followed by any delimiter, including ':' */
2418 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2419 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2420 (tokenbuf[0] == 'q' &&
2421 strchr("qwx", tokenbuf[1]))));
2423 /* x::* is just a word, unless x is "CORE" */
2424 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2428 while (d < bufend && isSPACE(*d))
2429 d++; /* no comments skipped here, or s### is misparsed */
2431 /* Is this a label? */
2432 if (!tmp && expect == XSTATE
2433 && d < bufend && *d == ':' && *(d + 1) != ':') {
2435 yylval.pval = savepv(tokenbuf);
2440 /* Check for keywords */
2441 tmp = keyword(tokenbuf, len);
2443 /* Is this a word before a => operator? */
2444 if (strnEQ(d,"=>",2)) {
2446 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2447 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2448 tokenbuf, tokenbuf);
2449 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2450 yylval.opval->op_private = OPpCONST_BARE;
2454 if (tmp < 0) { /* second-class keyword? */
2456 if (expect != XOPERATOR &&
2457 (*s != ':' || s[1] != ':') &&
2458 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2470 default: /* not a keyword */
2473 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2475 /* Get the rest if it looks like a package qualifier */
2477 if (*s == '\'' || *s == ':' && s[1] == ':') {
2478 s = scan_word(s, tokenbuf + len, TRUE, &len);
2480 croak("Bad name after %s::", tokenbuf);
2483 if (expect == XOPERATOR) {
2484 if (bufptr == linestart) {
2490 no_op("Bare word",s);
2493 /* Look for a subroutine with this name in current package. */
2495 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2497 /* Presume this is going to be a bareword of some sort. */
2500 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2501 yylval.opval->op_private = OPpCONST_BARE;
2503 /* See if it's the indirect object for a list operator. */
2506 oldoldbufptr < bufptr &&
2507 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2508 /* NO SKIPSPACE BEFORE HERE! */
2510 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2512 bool immediate_paren = *s == '(';
2514 /* (Now we can afford to cross potential line boundary.) */
2517 /* Two barewords in a row may indicate method call. */
2519 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2522 /* If not a declared subroutine, it's an indirect object. */
2523 /* (But it's an indir obj regardless for sort.) */
2525 if ((last_lop_op == OP_SORT ||
2526 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2527 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2528 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2533 /* If followed by a paren, it's certainly a subroutine. */
2539 nextval[nexttoke].opval = yylval.opval;
2546 /* If followed by var or block, call it a method (unless sub) */
2548 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2549 last_lop = oldbufptr;
2550 last_lop_op = OP_METHOD;
2554 /* If followed by a bareword, see if it looks like indir obj. */
2556 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2559 /* Not a method, so call it a subroutine (if defined) */
2561 if (gv && GvCVu(gv)) {
2564 nextval[nexttoke].opval = yylval.opval;
2570 if (lastchar == '-')
2571 warn("Ambiguous use of -%s resolved as -&%s()",
2572 tokenbuf, tokenbuf);
2573 last_lop = oldbufptr;
2574 last_lop_op = OP_ENTERSUB;
2575 /* Check for a constant sub */
2577 SV *sv = cv_const_sv(cv);
2579 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2580 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2581 yylval.opval->op_private = 0;
2586 /* Resolve to GV now. */
2587 op_free(yylval.opval);
2588 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2589 /* Is there a prototype? */
2592 char *proto = SvPV((SV*)cv, len);
2595 if (strEQ(proto, "$"))
2597 if (*proto == '&' && *s == '{') {
2598 sv_setpv(subname,"__ANON__");
2602 nextval[nexttoke].opval = yylval.opval;
2608 if (hints & HINT_STRICT_SUBS &&
2611 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2612 last_lop_op != OP_ACCEPT &&
2613 last_lop_op != OP_PIPE_OP &&
2614 last_lop_op != OP_SOCKPAIR)
2617 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2622 /* Call it a bare word */
2626 if (lastchar != '-') {
2627 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2629 warn(warn_reserved, tokenbuf);
2632 if (lastchar && strchr("*%&", lastchar)) {
2633 warn("Operator or semicolon missing before %c%s",
2634 lastchar, tokenbuf);
2635 warn("Ambiguous use of %c resolved as operator %c",
2636 lastchar, lastchar);
2642 case KEY___FILE__: {
2643 if (tokenbuf[2] == 'L')
2644 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2646 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2647 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2656 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2658 char *pname = "main";
2659 if (tokenbuf[2] == 'D')
2660 pname = HvNAME(curstash ? curstash : defstash);
2661 sprintf(dname,"%s::DATA", pname);
2662 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
2665 GvIOp(gv) = newIO();
2666 IoIFP(GvIOp(gv)) = rsfp;
2667 #if defined(HAS_FCNTL) && defined(F_SETFD)
2669 int fd = PerlIO_fileno(rsfp);
2670 fcntl(fd,F_SETFD,fd >= 3);
2673 /* Mark this internal pseudo-handle as clean */
2674 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2676 IoTYPE(GvIOp(gv)) = '|';
2677 else if ((PerlIO*)rsfp == PerlIO_stdin())
2678 IoTYPE(GvIOp(gv)) = '-';
2680 IoTYPE(GvIOp(gv)) = '<';
2690 if (expect == XSTATE) {
2697 if (*s == ':' && s[1] == ':') {
2700 s = scan_word(s, tokenbuf, FALSE, &len);
2701 tmp = keyword(tokenbuf, len);
2715 LOP(OP_ACCEPT,XTERM);
2721 LOP(OP_ATAN2,XTERM);
2730 LOP(OP_BLESS,XTERM);
2739 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2759 LOP(OP_CRYPT,XTERM);
2763 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2764 if (*d != '0' && isDIGIT(*d))
2765 yywarn("chmod: mode argument is missing initial 0");
2767 LOP(OP_CHMOD,XTERM);
2770 LOP(OP_CHOWN,XTERM);
2773 LOP(OP_CONNECT,XTERM);
2789 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2793 hints |= HINT_BLOCK_SCOPE;
2803 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2804 LOP(OP_DBMOPEN,XTERM);
2810 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2817 yylval.ival = curcop->cop_line;
2831 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2832 UNIBRACK(OP_ENTEREVAL);
2847 case KEY_endhostent:
2853 case KEY_endservent:
2856 case KEY_endprotoent:
2867 yylval.ival = curcop->cop_line;
2869 if (isIDFIRST(*s)) {
2871 if ((bufend - p) >= 3 &&
2872 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2876 croak("Missing $ on loop variable");
2881 LOP(OP_FORMLINE,XTERM);
2887 LOP(OP_FCNTL,XTERM);
2893 LOP(OP_FLOCK,XTERM);
2902 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2905 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2920 case KEY_getpriority:
2921 LOP(OP_GETPRIORITY,XTERM);
2923 case KEY_getprotobyname:
2926 case KEY_getprotobynumber:
2927 LOP(OP_GPBYNUMBER,XTERM);
2929 case KEY_getprotoent:
2941 case KEY_getpeername:
2942 UNI(OP_GETPEERNAME);
2944 case KEY_gethostbyname:
2947 case KEY_gethostbyaddr:
2948 LOP(OP_GHBYADDR,XTERM);
2950 case KEY_gethostent:
2953 case KEY_getnetbyname:
2956 case KEY_getnetbyaddr:
2957 LOP(OP_GNBYADDR,XTERM);
2962 case KEY_getservbyname:
2963 LOP(OP_GSBYNAME,XTERM);
2965 case KEY_getservbyport:
2966 LOP(OP_GSBYPORT,XTERM);
2968 case KEY_getservent:
2971 case KEY_getsockname:
2972 UNI(OP_GETSOCKNAME);
2974 case KEY_getsockopt:
2975 LOP(OP_GSOCKOPT,XTERM);
2997 yylval.ival = curcop->cop_line;
3001 LOP(OP_INDEX,XTERM);
3007 LOP(OP_IOCTL,XTERM);
3019 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3050 LOP(OP_LISTEN,XTERM);
3057 TERM(sublex_start());
3060 LOP(OP_MAPSTART,XREF);
3063 LOP(OP_MKDIR,XTERM);
3066 LOP(OP_MSGCTL,XTERM);
3069 LOP(OP_MSGGET,XTERM);
3072 LOP(OP_MSGRCV,XTERM);
3075 LOP(OP_MSGSND,XTERM);
3082 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3089 if (expect != XSTATE)
3090 yyerror("\"no\" not allowed in expression");
3091 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3092 s = force_version(s);
3101 if (isIDFIRST(*s)) {
3103 for (d = s; isALNUM(*d); d++) ;
3105 if (strchr("|&*+-=!?:.", *t))
3106 warn("Precedence problem: open %.*s should be open(%.*s)",
3112 yylval.ival = OP_OR;
3122 LOP(OP_OPEN_DIR,XTERM);
3125 checkcomma(s,tokenbuf,"filehandle");
3129 checkcomma(s,tokenbuf,"filehandle");
3148 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3152 LOP(OP_PIPE_OP,XTERM);
3157 missingterm((char*)0);
3158 yylval.ival = OP_CONST;
3159 TERM(sublex_start());
3167 missingterm((char*)0);
3168 if (dowarn && SvLEN(lex_stuff)) {
3169 d = SvPV_force(lex_stuff, len);
3170 for (; len; --len, ++d) {
3172 warn("Possible attempt to separate words with commas");
3176 warn("Possible attempt to put comments in qw() list");
3182 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3186 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3189 yylval.ival = OP_SPLIT;
3193 last_lop = oldbufptr;
3194 last_lop_op = OP_SPLIT;
3200 missingterm((char*)0);
3201 yylval.ival = OP_STRINGIFY;
3202 if (SvIVX(lex_stuff) == '\'')
3203 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3204 TERM(sublex_start());
3209 missingterm((char*)0);
3210 yylval.ival = OP_BACKTICK;
3212 TERM(sublex_start());
3219 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3220 if (isIDFIRST(*tokenbuf))
3221 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3223 yyerror("<> should be quotes");
3230 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3234 LOP(OP_RENAME,XTERM);
3243 LOP(OP_RINDEX,XTERM);
3266 LOP(OP_REVERSE,XTERM);
3277 TERM(sublex_start());
3279 TOKEN(1); /* force error */
3288 LOP(OP_SELECT,XTERM);
3294 LOP(OP_SEMCTL,XTERM);
3297 LOP(OP_SEMGET,XTERM);
3300 LOP(OP_SEMOP,XTERM);
3306 LOP(OP_SETPGRP,XTERM);
3308 case KEY_setpriority:
3309 LOP(OP_SETPRIORITY,XTERM);
3311 case KEY_sethostent:
3317 case KEY_setservent:
3320 case KEY_setprotoent:
3330 LOP(OP_SEEKDIR,XTERM);
3332 case KEY_setsockopt:
3333 LOP(OP_SSOCKOPT,XTERM);
3339 LOP(OP_SHMCTL,XTERM);
3342 LOP(OP_SHMGET,XTERM);
3345 LOP(OP_SHMREAD,XTERM);
3348 LOP(OP_SHMWRITE,XTERM);
3351 LOP(OP_SHUTDOWN,XTERM);
3360 LOP(OP_SOCKET,XTERM);
3362 case KEY_socketpair:
3363 LOP(OP_SOCKPAIR,XTERM);
3366 checkcomma(s,tokenbuf,"subroutine name");
3368 if (*s == ';' || *s == ')') /* probably a close */
3369 croak("sort is now a reserved word");
3371 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3375 LOP(OP_SPLIT,XTERM);
3378 LOP(OP_SPRINTF,XTERM);
3381 LOP(OP_SPLICE,XTERM);
3397 LOP(OP_SUBSTR,XTERM);
3404 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3407 d = scan_word(s, tmpbuf, TRUE, &len);
3408 if (strchr(tmpbuf, ':'))
3409 sv_setpv(subname, tmpbuf);
3411 sv_setsv(subname,curstname);
3412 sv_catpvn(subname,"::",2);
3413 sv_catpvn(subname,tmpbuf,len);
3415 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3419 expect = XTERMBLOCK;
3420 sv_setpv(subname,"?");
3423 if (tmp == KEY_format) {
3426 lex_formbrack = lex_brackets + 1;
3430 /* Look for a prototype */
3435 SvREFCNT_dec(lex_stuff);
3437 croak("Prototype not terminated");
3440 nextval[1] = nextval[0];
3441 nexttype[1] = nexttype[0];
3442 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3443 nexttype[0] = THING;
3444 if (nexttoke == 1) {
3445 lex_defer = lex_state;
3446 lex_expect = expect;
3447 lex_state = LEX_KNOWNEXT;
3452 if (*SvPV(subname,na) == '?') {
3453 sv_setpv(subname,"__ANON__");
3460 LOP(OP_SYSTEM,XREF);
3463 LOP(OP_SYMLINK,XTERM);
3466 LOP(OP_SYSCALL,XTERM);
3469 LOP(OP_SYSOPEN,XTERM);
3472 LOP(OP_SYSREAD,XTERM);
3475 LOP(OP_SYSWRITE,XTERM);
3479 TERM(sublex_start());
3500 LOP(OP_TRUNCATE,XTERM);
3512 yylval.ival = curcop->cop_line;
3516 yylval.ival = curcop->cop_line;
3520 LOP(OP_UNLINK,XTERM);
3526 LOP(OP_UNPACK,XTERM);
3529 LOP(OP_UTIME,XTERM);
3533 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3534 if (*d != '0' && isDIGIT(*d))
3535 yywarn("umask: argument is missing initial 0");
3540 LOP(OP_UNSHIFT,XTERM);
3543 if (expect != XSTATE)
3544 yyerror("\"use\" not allowed in expression");
3547 s = force_version(s);
3548 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3549 nextval[nexttoke].opval = Nullop;
3554 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3555 s = force_version(s);
3568 yylval.ival = curcop->cop_line;
3572 hints |= HINT_BLOCK_SCOPE;
3579 LOP(OP_WAITPID,XTERM);
3585 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3589 if (expect == XOPERATOR)
3595 yylval.ival = OP_XOR;
3600 TERM(sublex_start());
3613 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3614 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3615 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3616 if (strEQ(d,"__END__")) return KEY___END__;
3620 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3625 if (strEQ(d,"and")) return -KEY_and;
3626 if (strEQ(d,"abs")) return -KEY_abs;
3629 if (strEQ(d,"alarm")) return -KEY_alarm;
3630 if (strEQ(d,"atan2")) return -KEY_atan2;
3633 if (strEQ(d,"accept")) return -KEY_accept;
3638 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3641 if (strEQ(d,"bless")) return -KEY_bless;
3642 if (strEQ(d,"bind")) return -KEY_bind;
3643 if (strEQ(d,"binmode")) return -KEY_binmode;
3646 if (strEQ(d,"CORE")) return -KEY_CORE;
3651 if (strEQ(d,"cmp")) return -KEY_cmp;
3652 if (strEQ(d,"chr")) return -KEY_chr;
3653 if (strEQ(d,"cos")) return -KEY_cos;
3656 if (strEQ(d,"chop")) return KEY_chop;
3659 if (strEQ(d,"close")) return -KEY_close;
3660 if (strEQ(d,"chdir")) return -KEY_chdir;
3661 if (strEQ(d,"chomp")) return KEY_chomp;
3662 if (strEQ(d,"chmod")) return -KEY_chmod;
3663 if (strEQ(d,"chown")) return -KEY_chown;
3664 if (strEQ(d,"crypt")) return -KEY_crypt;
3667 if (strEQ(d,"chroot")) return -KEY_chroot;
3668 if (strEQ(d,"caller")) return -KEY_caller;
3671 if (strEQ(d,"connect")) return -KEY_connect;
3674 if (strEQ(d,"closedir")) return -KEY_closedir;
3675 if (strEQ(d,"continue")) return -KEY_continue;
3680 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3685 if (strEQ(d,"do")) return KEY_do;
3688 if (strEQ(d,"die")) return -KEY_die;
3691 if (strEQ(d,"dump")) return -KEY_dump;
3694 if (strEQ(d,"delete")) return KEY_delete;
3697 if (strEQ(d,"defined")) return KEY_defined;
3698 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3701 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3706 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3707 if (strEQ(d,"END")) return KEY_END;
3712 if (strEQ(d,"eq")) return -KEY_eq;
3715 if (strEQ(d,"eof")) return -KEY_eof;
3716 if (strEQ(d,"exp")) return -KEY_exp;
3719 if (strEQ(d,"else")) return KEY_else;
3720 if (strEQ(d,"exit")) return -KEY_exit;
3721 if (strEQ(d,"eval")) return KEY_eval;
3722 if (strEQ(d,"exec")) return -KEY_exec;
3723 if (strEQ(d,"each")) return KEY_each;
3726 if (strEQ(d,"elsif")) return KEY_elsif;
3729 if (strEQ(d,"exists")) return KEY_exists;
3730 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3733 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3734 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3737 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3740 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3741 if (strEQ(d,"endservent")) return -KEY_endservent;
3744 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3751 if (strEQ(d,"for")) return KEY_for;
3754 if (strEQ(d,"fork")) return -KEY_fork;
3757 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3758 if (strEQ(d,"flock")) return -KEY_flock;
3761 if (strEQ(d,"format")) return KEY_format;
3762 if (strEQ(d,"fileno")) return -KEY_fileno;
3765 if (strEQ(d,"foreach")) return KEY_foreach;
3768 if (strEQ(d,"formline")) return -KEY_formline;
3774 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3775 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3779 if (strnEQ(d,"get",3)) {
3784 if (strEQ(d,"ppid")) return -KEY_getppid;
3785 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3788 if (strEQ(d,"pwent")) return -KEY_getpwent;
3789 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3790 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3793 if (strEQ(d,"peername")) return -KEY_getpeername;
3794 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3795 if (strEQ(d,"priority")) return -KEY_getpriority;
3798 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3801 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3805 else if (*d == 'h') {
3806 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3807 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3808 if (strEQ(d,"hostent")) return -KEY_gethostent;
3810 else if (*d == 'n') {
3811 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3812 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3813 if (strEQ(d,"netent")) return -KEY_getnetent;
3815 else if (*d == 's') {
3816 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3817 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3818 if (strEQ(d,"servent")) return -KEY_getservent;
3819 if (strEQ(d,"sockname")) return -KEY_getsockname;
3820 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3822 else if (*d == 'g') {
3823 if (strEQ(d,"grent")) return -KEY_getgrent;
3824 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3825 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3827 else if (*d == 'l') {
3828 if (strEQ(d,"login")) return -KEY_getlogin;
3830 else if (strEQ(d,"c")) return -KEY_getc;
3835 if (strEQ(d,"gt")) return -KEY_gt;
3836 if (strEQ(d,"ge")) return -KEY_ge;
3839 if (strEQ(d,"grep")) return KEY_grep;
3840 if (strEQ(d,"goto")) return KEY_goto;
3841 if (strEQ(d,"glob")) return -KEY_glob;
3844 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3849 if (strEQ(d,"hex")) return -KEY_hex;
3854 if (strEQ(d,"if")) return KEY_if;
3857 if (strEQ(d,"int")) return -KEY_int;
3860 if (strEQ(d,"index")) return -KEY_index;
3861 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3866 if (strEQ(d,"join")) return -KEY_join;
3870 if (strEQ(d,"keys")) return KEY_keys;
3871 if (strEQ(d,"kill")) return -KEY_kill;
3876 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3877 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3883 if (strEQ(d,"lt")) return -KEY_lt;
3884 if (strEQ(d,"le")) return -KEY_le;
3885 if (strEQ(d,"lc")) return -KEY_lc;
3888 if (strEQ(d,"log")) return -KEY_log;
3891 if (strEQ(d,"last")) return KEY_last;
3892 if (strEQ(d,"link")) return -KEY_link;
3895 if (strEQ(d,"local")) return KEY_local;
3896 if (strEQ(d,"lstat")) return -KEY_lstat;
3899 if (strEQ(d,"length")) return -KEY_length;
3900 if (strEQ(d,"listen")) return -KEY_listen;
3903 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3906 if (strEQ(d,"localtime")) return -KEY_localtime;
3912 case 1: return KEY_m;
3914 if (strEQ(d,"my")) return KEY_my;
3917 if (strEQ(d,"map")) return KEY_map;
3920 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3923 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3924 if (strEQ(d,"msgget")) return -KEY_msgget;
3925 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3926 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3931 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3934 if (strEQ(d,"next")) return KEY_next;
3935 if (strEQ(d,"ne")) return -KEY_ne;
3936 if (strEQ(d,"not")) return -KEY_not;
3937 if (strEQ(d,"no")) return KEY_no;
3942 if (strEQ(d,"or")) return -KEY_or;
3945 if (strEQ(d,"ord")) return -KEY_ord;
3946 if (strEQ(d,"oct")) return -KEY_oct;
3949 if (strEQ(d,"open")) return -KEY_open;
3952 if (strEQ(d,"opendir")) return -KEY_opendir;
3959 if (strEQ(d,"pop")) return KEY_pop;
3960 if (strEQ(d,"pos")) return KEY_pos;
3963 if (strEQ(d,"push")) return KEY_push;
3964 if (strEQ(d,"pack")) return -KEY_pack;
3965 if (strEQ(d,"pipe")) return -KEY_pipe;
3968 if (strEQ(d,"print")) return KEY_print;
3971 if (strEQ(d,"printf")) return KEY_printf;
3974 if (strEQ(d,"package")) return KEY_package;
3977 if (strEQ(d,"prototype")) return KEY_prototype;
3982 if (strEQ(d,"q")) return KEY_q;
3983 if (strEQ(d,"qq")) return KEY_qq;
3984 if (strEQ(d,"qw")) return KEY_qw;
3985 if (strEQ(d,"qx")) return KEY_qx;
3987 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
3992 if (strEQ(d,"ref")) return -KEY_ref;
3995 if (strEQ(d,"read")) return -KEY_read;
3996 if (strEQ(d,"rand")) return -KEY_rand;
3997 if (strEQ(d,"recv")) return -KEY_recv;
3998 if (strEQ(d,"redo")) return KEY_redo;
4001 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4002 if (strEQ(d,"reset")) return -KEY_reset;
4005 if (strEQ(d,"return")) return KEY_return;
4006 if (strEQ(d,"rename")) return -KEY_rename;
4007 if (strEQ(d,"rindex")) return -KEY_rindex;
4010 if (strEQ(d,"require")) return -KEY_require;
4011 if (strEQ(d,"reverse")) return -KEY_reverse;
4012 if (strEQ(d,"readdir")) return -KEY_readdir;
4015 if (strEQ(d,"readlink")) return -KEY_readlink;
4016 if (strEQ(d,"readline")) return -KEY_readline;
4017 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4020 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4026 case 0: return KEY_s;
4028 if (strEQ(d,"scalar")) return KEY_scalar;
4033 if (strEQ(d,"seek")) return -KEY_seek;
4034 if (strEQ(d,"send")) return -KEY_send;
4037 if (strEQ(d,"semop")) return -KEY_semop;
4040 if (strEQ(d,"select")) return -KEY_select;
4041 if (strEQ(d,"semctl")) return -KEY_semctl;
4042 if (strEQ(d,"semget")) return -KEY_semget;
4045 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4046 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4049 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4050 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4053 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4056 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4057 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4058 if (strEQ(d,"setservent")) return -KEY_setservent;
4061 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4062 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4069 if (strEQ(d,"shift")) return KEY_shift;
4072 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4073 if (strEQ(d,"shmget")) return -KEY_shmget;
4076 if (strEQ(d,"shmread")) return -KEY_shmread;
4079 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4080 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4085 if (strEQ(d,"sin")) return -KEY_sin;
4088 if (strEQ(d,"sleep")) return -KEY_sleep;
4091 if (strEQ(d,"sort")) return KEY_sort;
4092 if (strEQ(d,"socket")) return -KEY_socket;
4093 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4096 if (strEQ(d,"split")) return KEY_split;
4097 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4098 if (strEQ(d,"splice")) return KEY_splice;
4101 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4104 if (strEQ(d,"srand")) return -KEY_srand;
4107 if (strEQ(d,"stat")) return -KEY_stat;
4108 if (strEQ(d,"study")) return KEY_study;
4111 if (strEQ(d,"substr")) return -KEY_substr;
4112 if (strEQ(d,"sub")) return KEY_sub;
4117 if (strEQ(d,"system")) return -KEY_system;
4120 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4121 if (strEQ(d,"sysread")) return -KEY_sysread;
4122 if (strEQ(d,"symlink")) return -KEY_symlink;
4123 if (strEQ(d,"syscall")) return -KEY_syscall;
4126 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4135 if (strEQ(d,"tr")) return KEY_tr;
4138 if (strEQ(d,"tie")) return KEY_tie;
4141 if (strEQ(d,"tell")) return -KEY_tell;
4142 if (strEQ(d,"tied")) return KEY_tied;
4143 if (strEQ(d,"time")) return -KEY_time;
4146 if (strEQ(d,"times")) return -KEY_times;
4149 if (strEQ(d,"telldir")) return -KEY_telldir;
4152 if (strEQ(d,"truncate")) return -KEY_truncate;
4159 if (strEQ(d,"uc")) return -KEY_uc;
4162 if (strEQ(d,"use")) return KEY_use;
4165 if (strEQ(d,"undef")) return KEY_undef;
4166 if (strEQ(d,"until")) return KEY_until;
4167 if (strEQ(d,"untie")) return KEY_untie;
4168 if (strEQ(d,"utime")) return -KEY_utime;
4169 if (strEQ(d,"umask")) return -KEY_umask;
4172 if (strEQ(d,"unless")) return KEY_unless;
4173 if (strEQ(d,"unpack")) return -KEY_unpack;
4174 if (strEQ(d,"unlink")) return -KEY_unlink;
4177 if (strEQ(d,"unshift")) return KEY_unshift;
4178 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4183 if (strEQ(d,"values")) return -KEY_values;
4184 if (strEQ(d,"vec")) return -KEY_vec;
4189 if (strEQ(d,"warn")) return -KEY_warn;
4190 if (strEQ(d,"wait")) return -KEY_wait;
4193 if (strEQ(d,"while")) return KEY_while;
4194 if (strEQ(d,"write")) return -KEY_write;
4197 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4200 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4205 if (len == 1) return -KEY_x;
4206 if (strEQ(d,"xor")) return -KEY_xor;
4209 if (len == 1) return KEY_y;
4218 checkcomma(s,name,what)
4225 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4227 for (w = s+2; *w && level; w++) {
4234 for (; *w && isSPACE(*w); w++) ;
4235 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4236 warn("%s (...) interpreted as function",name);
4238 while (s < bufend && isSPACE(*s))
4242 while (s < bufend && isSPACE(*s))
4244 if (isIDFIRST(*s)) {
4248 while (s < bufend && isSPACE(*s))
4253 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4257 croak("No comma allowed after %s", what);
4263 scan_word(s, dest, allow_package, slp)
4269 register char *d = dest;
4273 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4278 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4291 scan_ident(s,send,dest,ck_uni)
4293 register char *send;
4301 if (lex_brackets == 0)
4314 else if (*s == '\'' && isIDFIRST(s[1])) {
4319 else if (*s == ':' && s[1] == ':') {
4330 if (lex_state != LEX_NORMAL)
4331 lex_state = LEX_INTERPENDMAYBE;
4334 if (*s == '$' && s[1] &&
4335 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4346 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4351 if (isSPACE(s[-1])) {
4354 if (ch != ' ' && ch != '\t') {
4360 if (isIDFIRST(*d)) {
4362 while (isALNUM(*s) || *s == ':')
4365 while (s < send && (*s == ' ' || *s == '\t')) s++;
4366 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4367 if (dowarn && keyword(dest, d - dest)) {
4368 char *brack = *s == '[' ? "[...]" : "{...}";
4369 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4370 funny, dest, brack, funny, dest, brack);
4372 lex_fakebrack = lex_brackets+1;
4374 lex_brackstack[lex_brackets++] = XOPERATOR;
4380 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4381 lex_state = LEX_INTERPEND;
4385 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4386 warn("Ambiguous use of %c{%s} resolved to %c%s",
4387 funny, dest, funny, dest);
4390 s = bracket; /* let the parser handle it */
4394 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4395 lex_state = LEX_INTERPEND;
4399 void pmflag(pmfl,ch)
4406 *pmfl |= PMf_GLOBAL;
4410 *pmfl |= PMf_MULTILINE;
4412 *pmfl |= PMf_SINGLELINE;
4414 *pmfl |= PMf_EXTENDED;
4424 s = scan_str(start);
4427 SvREFCNT_dec(lex_stuff);
4429 croak("Search pattern not terminated");
4432 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4433 if (multi_open == '?')
4434 pm->op_pmflags |= PMf_ONCE;
4435 while (*s && strchr("iogmsx", *s))
4436 pmflag(&pm->op_pmflags,*s++);
4437 pm->op_pmpermflags = pm->op_pmflags;
4440 yylval.ival = OP_MATCH;
4453 yylval.ival = OP_NULL;
4455 s = scan_str(start);
4459 SvREFCNT_dec(lex_stuff);
4461 croak("Substitution pattern not terminated");
4464 if (s[-1] == multi_open)
4467 first_start = multi_start;
4471 SvREFCNT_dec(lex_stuff);
4474 SvREFCNT_dec(lex_repl);
4476 croak("Substitution replacement not terminated");
4478 multi_start = first_start; /* so whole substitution is taken together */
4480 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4481 while (*s && strchr("iogmsex", *s)) {
4487 pmflag(&pm->op_pmflags,*s++);
4492 pm->op_pmflags |= PMf_EVAL;
4493 repl = newSVpv("",0);
4495 sv_catpv(repl, es ? "eval " : "do ");
4496 sv_catpvn(repl, "{ ", 2);
4497 sv_catsv(repl, lex_repl);
4498 sv_catpvn(repl, " };", 2);
4499 SvCOMPILED_on(repl);
4500 SvREFCNT_dec(lex_repl);
4504 pm->op_pmpermflags = pm->op_pmflags;
4506 yylval.ival = OP_SUBST;
4514 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4515 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4517 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4518 pm->op_pmflags |= PMf_SCANFIRST;
4519 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4520 pm->op_pmslen = SvCUR(pm->op_pmshort);
4522 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4523 if (pm->op_pmshort &&
4524 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4526 if (pm->op_pmflags & PMf_SCANFIRST) {
4527 SvREFCNT_dec(pm->op_pmshort);
4528 pm->op_pmshort = Nullsv;
4531 SvREFCNT_dec(pm->op_pmregexp->regmust);
4532 pm->op_pmregexp->regmust = Nullsv;
4536 /* promote the better string */
4537 if ((!pm->op_pmshort && !(pm->op_pmregexp->reganch & ROPT_ANCH)) ||
4538 ((pm->op_pmflags & PMf_SCANFIRST) &&
4539 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4540 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4541 pm->op_pmshort = pm->op_pmregexp->regmust;
4542 pm->op_pmslen = SvCUR(pm->op_pmshort);
4543 pm->op_pmregexp->regmust = Nullsv;
4544 pm->op_pmflags |= PMf_SCANFIRST;
4560 yylval.ival = OP_NULL;
4562 s = scan_str(start);
4565 SvREFCNT_dec(lex_stuff);
4567 croak("Translation pattern not terminated");
4569 if (s[-1] == multi_open)
4575 SvREFCNT_dec(lex_stuff);
4578 SvREFCNT_dec(lex_repl);
4580 croak("Translation replacement not terminated");
4583 New(803,tbl,256,short);
4584 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4586 complement = delete = squash = 0;
4587 while (*s == 'c' || *s == 'd' || *s == 's') {
4589 complement = OPpTRANS_COMPLEMENT;
4591 delete = OPpTRANS_DELETE;
4593 squash = OPpTRANS_SQUASH;
4596 op->op_private = delete|squash|complement;
4599 yylval.ival = OP_TRANS;
4608 I32 op_type = OP_SCALAR;
4614 int outer = (rsfp && !lex_inwhat);
4620 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4621 if (*peek && strchr("`'\"",*peek)) {
4624 s = cpytill(d,s,bufend,term,&len);
4635 deprecate("bare << to mean <<\"\"");
4638 } /* assuming tokenbuf won't clobber */
4643 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4644 herewas = newSVpv(s,bufend-s);
4646 s--, herewas = newSVpv(s,d-s);
4647 s += SvCUR(herewas);
4649 tmpstr = NEWSV(87,80);
4650 sv_upgrade(tmpstr, SVt_PVIV);
4655 else if (term == '`') {
4656 op_type = OP_BACKTICK;
4657 SvIVX(tmpstr) = '\\';
4661 multi_start = curcop->cop_line;
4662 multi_open = multi_close = '<';
4666 while (s < bufend &&
4667 (*s != term || memNE(s,tokenbuf,len)) ) {
4672 curcop->cop_line = multi_start;
4673 missingterm(tokenbuf);
4675 sv_setpvn(tmpstr,d+1,s-d);
4677 sv_catpvn(herewas,s,bufend-s);
4678 sv_setsv(linestr,herewas);
4679 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4680 bufend = SvPVX(linestr) + SvCUR(linestr);
4683 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4684 while (s >= bufend) { /* multiple line string? */
4686 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4687 curcop->cop_line = multi_start;
4688 missingterm(tokenbuf);
4691 if (perldb && curstash != debstash) {
4692 SV *sv = NEWSV(88,0);
4694 sv_upgrade(sv, SVt_PVMG);
4695 sv_setsv(sv,linestr);
4696 av_store(GvAV(curcop->cop_filegv),
4697 (I32)curcop->cop_line,sv);
4699 bufend = SvPVX(linestr) + SvCUR(linestr);
4700 if (*s == term && memEQ(s,tokenbuf,len)) {
4703 sv_catsv(linestr,herewas);
4704 bufend = SvPVX(linestr) + SvCUR(linestr);
4708 sv_catsv(tmpstr,linestr);
4711 multi_end = curcop->cop_line;
4713 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4714 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4715 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4717 SvREFCNT_dec(herewas);
4719 yylval.ival = op_type;
4724 scan_inputsymbol(start)
4727 register char *s = start;
4732 s = cpytill(d, s+1, bufend, '>', &len);
4736 croak("Unterminated <> operator");
4738 if (*d == '$' && d[1]) d++;
4739 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4741 if (d - tokenbuf != len) {
4742 yylval.ival = OP_GLOB;
4744 s = scan_str(start);
4746 croak("Glob not terminated");
4752 (void)strcpy(d,"ARGV");
4755 if (tmp = pad_findmy(d)) {
4756 OP *op = newOP(OP_PADSV, 0);
4758 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4761 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4762 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4763 newUNOP(OP_RV2GV, 0,
4764 newUNOP(OP_RV2SV, 0,
4765 newGVOP(OP_GV, 0, gv))));
4767 yylval.ival = OP_NULL;
4770 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4771 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4772 yylval.ival = OP_NULL;
4784 register char *s = start;
4793 multi_start = curcop->cop_line;
4795 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4800 sv_upgrade(sv, SVt_PVIV);
4802 (void)SvPOK_only(sv); /* validate pointer */
4805 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4806 to = SvPVX(sv)+SvCUR(sv);
4807 if (multi_open == multi_close) {
4808 for (; s < bufend; s++,to++) {
4809 if (*s == '\n' && !rsfp)
4811 if (*s == '\\' && s+1 < bufend && term != '\\') {
4817 else if (*s == term)
4823 for (; s < bufend; s++,to++) {
4824 if (*s == '\n' && !rsfp)
4826 if (*s == '\\' && s+1 < bufend && term != '\\') {
4832 else if (*s == term && --brackets <= 0)
4834 else if (*s == multi_open)
4840 SvCUR_set(sv, to - SvPVX(sv));
4842 if (s < bufend) break; /* string ends on this line? */
4845 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4847 curcop->cop_line = multi_start;
4851 if (perldb && curstash != debstash) {
4852 SV *sv = NEWSV(88,0);
4854 sv_upgrade(sv, SVt_PVMG);
4855 sv_setsv(sv,linestr);
4856 av_store(GvAV(curcop->cop_filegv),
4857 (I32)curcop->cop_line, sv);
4859 bufend = SvPVX(linestr) + SvCUR(linestr);
4861 multi_end = curcop->cop_line;
4863 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4864 SvLEN_set(sv, SvCUR(sv) + 1);
4865 Renew(SvPVX(sv), SvLEN(sv), char);
4878 register char *s = start;
4888 croak("panic: scan_num");
4893 bool overflowed = FALSE;
4899 else if (s[1] == '.')
4915 yyerror("Illegal octal digit");
4917 case '0': case '1': case '2': case '3': case '4':
4918 case '5': case '6': case '7':
4921 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4922 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4928 if (!overflowed && (n >> shift) != u) {
4929 warn("Integer overflow in %s number",
4930 (shift == 4) ? "hex" : "octal");
4942 case '1': case '2': case '3': case '4': case '5':
4943 case '6': case '7': case '8': case '9': case '.':
4947 while (isDIGIT(*s) || *s == '_') {
4949 if (dowarn && lastub && s - lastub != 3)
4950 warn("Misplaced _ in number");
4956 if (dowarn && lastub && s - lastub != 3)
4957 warn("Misplaced _ in number");
4958 if (*s == '.' && s[1] != '.') {
4961 while (isDIGIT(*s) || *s == '_') {
4968 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
4971 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
4972 if (*s == '+' || *s == '-')
4979 SET_NUMERIC_STANDARD();
4980 value = atof(tokenbuf);
4981 tryi32 = I_32(value);
4982 if (!floatit && (double)tryi32 == value)
4983 sv_setiv(sv,tryi32);
4989 yylval.opval = newSVOP(OP_CONST, 0, sv);
5000 SV *stuff = newSVpv("",0);
5001 bool needargs = FALSE;
5004 if (*s == '.' || *s == '}') {
5006 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5010 if (in_eval && !rsfp) {
5011 eol = strchr(s,'\n');
5016 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5018 for (t = s; t < eol; t++) {
5019 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5021 goto enough; /* ~~ must be first line in formline */
5023 if (*t == '@' || *t == '^')
5026 sv_catpvn(stuff, s, eol-s);
5030 s = filter_gets(linestr, rsfp, 0);
5031 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5032 bufend = bufptr + SvCUR(linestr);
5035 yyerror("Format not terminated");
5045 lex_state = LEX_NORMAL;
5046 nextval[nexttoke].ival = 0;
5050 lex_state = LEX_FORMLINE;
5051 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5053 nextval[nexttoke].ival = OP_FORMLINE;
5057 SvREFCNT_dec(stuff);
5069 cshlen = strlen(cshname);
5074 start_subparse(is_format, flags)
5078 int oldsavestack_ix = savestack_ix;
5079 CV* outsidecv = compcv;
5083 assert(SvTYPE(compcv) == SVt_PVCV);
5090 SAVESPTR(comppad_name);
5092 SAVEI32(comppad_name_fill);
5093 SAVEI32(min_intro_pending);
5094 SAVEI32(max_intro_pending);
5095 SAVEI32(pad_reset_pending);
5097 compcv = (CV*)NEWSV(1104,0);
5098 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5099 CvFLAGS(compcv) |= flags;
5102 comppad_name = newAV();
5103 comppad_name_fill = 0;
5104 min_intro_pending = 0;
5105 av_push(comppad, Nullsv);
5106 curpad = AvARRAY(comppad);
5108 subline = curcop->cop_line;
5110 comppadlist = newAV();
5111 AvREAL_off(comppadlist);
5112 av_store(comppadlist, 0, (SV*)comppad_name);
5113 av_store(comppadlist, 1, (SV*)comppad);
5115 CvPADLIST(compcv) = comppadlist;
5116 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5118 return oldsavestack_ix;
5137 char *tname = tmpbuf;
5139 if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5140 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5141 while (isSPACE(*oldoldbufptr))
5143 sprintf(tname,"near \"%.*s\"",bufptr - oldoldbufptr, oldoldbufptr);
5145 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5146 oldbufptr != bufptr) {
5147 while (isSPACE(*oldbufptr))
5149 sprintf(tname,"near \"%.*s\"",bufptr - oldbufptr, oldbufptr);
5151 else if (yychar > 255)
5152 tname = "next token ???";
5153 else if (!yychar || (yychar == ';' && !rsfp))
5154 (void)strcpy(tname,"at EOF");
5155 else if ((yychar & 127) == 127) {
5156 if (lex_state == LEX_NORMAL ||
5157 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5158 (void)strcpy(tname,"at end of line");
5160 (void)strcpy(tname,"within pattern");
5162 (void)strcpy(tname,"within string");
5164 else if (yychar < 32)
5165 (void)sprintf(tname,"next char ^%c",toCTRL(yychar));
5167 (void)sprintf(tname,"next char %c",yychar);
5168 (void)sprintf(buf, "%s at %s line %d, %s\n",
5169 s,SvPVX(GvSV(curcop->cop_filegv)),curcop->cop_line,tname);
5170 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5171 sprintf(buf+strlen(buf),
5172 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5173 (int)multi_open,(int)multi_close,(long)multi_start);
5179 sv_catpv(GvSV(errgv),buf);
5181 PerlIO_printf(PerlIO_stderr(), "%s",buf);
5182 if (++error_count >= 10)
5183 croak("%s has too many errors.\n",
5184 SvPVX(GvSV(curcop->cop_filegv)));