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 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).
70 #define LEX_INTERPNORMAL 9
71 #define LEX_INTERPCASEMOD 8
72 #define LEX_INTERPPUSH 7
73 #define LEX_INTERPSTART 6
74 #define LEX_INTERPEND 5
75 #define LEX_INTERPENDMAYBE 4
76 #define LEX_INTERPCONCAT 3
77 #define LEX_INTERPCONST 2
78 #define LEX_FORMLINE 1
79 #define LEX_KNOWNEXT 0
88 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
90 # include <unistd.h> /* Needed for execv() */
103 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
105 #define TOKEN(retval) return (bufptr = s,(int)retval)
106 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
107 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
108 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
109 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
110 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
111 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
112 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
113 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
114 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
115 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
116 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
117 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
118 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
119 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
120 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
121 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
122 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
123 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
124 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
126 /* This bit of chicanery makes a unary function followed by
127 * a parenthesis into a function with one argument, highest precedence.
129 #define UNI(f) return(yylval.ival = f, \
132 last_uni = oldbufptr, \
134 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
136 #define UNIBRACK(f) return(yylval.ival = f, \
138 last_uni = oldbufptr, \
139 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
141 /* grandfather return to old style */
142 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
148 if (*bufptr == '=') {
150 if (toketype == ANDAND)
151 yylval.ival = OP_ANDASSIGN;
152 else if (toketype == OROR)
153 yylval.ival = OP_ORASSIGN;
164 char *oldbp = bufptr;
165 bool is_first = (oldbufptr == linestart);
169 New(890, msg, strlen(what) + 40, char);
170 sprintf(msg, "%s found where operator expected", what);
174 warn("\t(Missing semicolon on previous line?)\n");
175 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
177 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
178 if (t < bufptr && isSPACE(*t))
179 warn("\t(Do you need to predeclare %.*s?)\n",
180 t - oldoldbufptr, oldoldbufptr);
184 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
195 char *nl = strrchr(s,'\n');
199 else if (multi_close < 32 || multi_close == 127) {
201 tmpbuf[1] = toCTRL(multi_close);
207 *tmpbuf = multi_close;
211 q = strchr(s,'"') ? '\'' : '"';
212 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
220 warn("Use of %s is deprecated", s);
226 deprecate("comma-less variable list");
237 SAVEI32(lex_brackets);
238 SAVEI32(lex_fakebrack);
239 SAVEI32(lex_casemods);
244 SAVEI16(curcop->cop_line);
248 SAVEPPTR(oldoldbufptr);
251 SAVEPPTR(lex_brackstack);
252 SAVEPPTR(lex_casestack);
253 SAVEDESTRUCTOR(restore_rsfp, rsfp);
255 lex_state = LEX_NORMAL;
260 New(899, lex_brackstack, 120, char);
261 New(899, lex_casestack, 12, char);
262 SAVEFREEPV(lex_brackstack);
263 SAVEFREEPV(lex_casestack);
265 *lex_casestack = '\0';
269 SvREFCNT_dec(lex_stuff);
272 SvREFCNT_dec(lex_repl);
277 if (SvREADONLY(linestr))
278 linestr = sv_2mortal(newSVsv(linestr));
279 s = SvPV(linestr, len);
280 if (len && s[len-1] != ';') {
281 if (!(SvFLAGS(linestr) & SVs_TEMP))
282 linestr = sv_2mortal(newSVsv(linestr));
283 sv_catpvn(linestr, "\n;", 2);
286 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
287 bufend = bufptr + SvCUR(linestr);
289 rs = newSVpv("\n", 1);
303 PerlIO *fp = (PerlIO*)f;
305 if (rsfp == PerlIO_stdin())
306 PerlIO_clearerr(rsfp);
307 else if (rsfp && (rsfp != fp))
324 while (*s == ' ' || *s == '\t') s++;
325 if (strnEQ(s, "line ", 5)) {
334 while (*s == ' ' || *s == '\t')
336 if (*s == '"' && (t = strchr(s+1, '"')))
340 return; /* false alarm */
341 for (t = s; !isSPACE(*t); t++) ;
346 curcop->cop_filegv = gv_fetchfile(s);
348 curcop->cop_filegv = gv_fetchfile(origfilename);
350 curcop->cop_line = atoi(n)-1;
357 if (lex_formbrack && lex_brackets <= lex_formbrack) {
358 while (s < bufend && (*s == ' ' || *s == '\t'))
364 while (s < bufend && isSPACE(*s))
366 if (s < bufend && *s == '#') {
367 while (s < bufend && *s != '\n')
372 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
374 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
375 if (minus_n || minus_p) {
376 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
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);
393 linestart = bufptr = s + prevlen;
394 bufend = s + SvCUR(linestr);
397 if (perldb && curstash != debstash) {
398 SV *sv = NEWSV(85,0);
400 sv_upgrade(sv, SVt_PVMG);
401 sv_setpvn(sv,bufptr,bufend-bufptr);
402 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
413 if (oldoldbufptr != last_uni)
415 while (isSPACE(*last_uni))
417 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
418 if ((t = strchr(s, '(')) && t < bufptr)
422 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
429 #define UNI(f) return uni(f,s)
439 last_uni = oldbufptr;
450 #endif /* CRIPPLED_CC */
452 #define LOP(f,x) return lop(f,x,s)
457 (I32 f, expectation x, char *s)
463 #endif /* CAN_PROTOTYPE */
469 last_lop = oldbufptr;
486 nexttype[nexttoke] = type;
488 if (lex_state != LEX_KNOWNEXT) {
489 lex_defer = lex_state;
491 lex_state = LEX_KNOWNEXT;
496 force_word(start,token,check_keyword,allow_pack,allow_tick)
497 register char *start;
506 start = skipspace(start);
509 (allow_pack && *s == ':') ||
510 (allow_tick && *s == '\'') )
512 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
513 if (check_keyword && keyword(tokenbuf, len))
515 if (token == METHOD) {
525 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
526 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
538 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
539 nextval[nexttoke].opval = op;
542 op->op_private = OPpCONST_ENTERED;
543 /* XXX see note in pp_entereval() for why we forgo typo
544 warnings if the symbol must be introduced in an eval.
546 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
547 kind == '$' ? SVt_PV :
548 kind == '@' ? SVt_PVAV :
549 kind == '%' ? SVt_PVHV :
560 OP *version = Nullop;
564 /* default VERSION number -- GBARR */
569 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
570 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
572 /* real VERSION number -- GBARR */
573 version = yylval.opval;
577 /* NOTE: The parser sees the package name and the VERSION swapped */
578 nextval[nexttoke].opval = version;
596 s = SvPV_force(sv, len);
600 while (s < send && *s != '\\')
607 if (s + 1 < send && (s[1] == '\\'))
608 s++; /* all that, just for this */
613 SvCUR_set(sv, d - SvPVX(sv));
621 register I32 op_type = yylval.ival;
623 if (op_type == OP_NULL) {
624 yylval.opval = lex_op;
628 if (op_type == OP_CONST || op_type == OP_READLINE) {
629 SV *sv = q(lex_stuff);
631 char *p = SvPV(sv, len);
632 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
638 sublex_info.super_state = lex_state;
639 sublex_info.sub_inwhat = op_type;
640 sublex_info.sub_op = lex_op;
641 lex_state = LEX_INTERPPUSH;
645 yylval.opval = lex_op;
658 lex_state = sublex_info.super_state;
660 SAVEI32(lex_brackets);
661 SAVEI32(lex_fakebrack);
662 SAVEI32(lex_casemods);
667 SAVEI16(curcop->cop_line);
670 SAVEPPTR(oldoldbufptr);
673 SAVEPPTR(lex_brackstack);
674 SAVEPPTR(lex_casestack);
679 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
680 bufend += SvCUR(linestr);
686 New(899, lex_brackstack, 120, char);
687 New(899, lex_casestack, 12, char);
688 SAVEFREEPV(lex_brackstack);
689 SAVEFREEPV(lex_casestack);
691 *lex_casestack = '\0';
693 lex_state = LEX_INTERPCONCAT;
694 curcop->cop_line = multi_start;
696 lex_inwhat = sublex_info.sub_inwhat;
697 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
698 lex_inpat = sublex_info.sub_op;
710 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
714 if (lex_casemods) { /* oops, we've got some unbalanced parens */
715 lex_state = LEX_INTERPCASEMOD;
719 /* Is there a right-hand side to take care of? */
720 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
723 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
724 bufend += SvCUR(linestr);
730 *lex_casestack = '\0';
732 if (SvCOMPILED(lex_repl)) {
733 lex_state = LEX_INTERPNORMAL;
737 lex_state = LEX_INTERPCONCAT;
743 bufend = SvPVX(linestr);
744 bufend += SvCUR(linestr);
754 register char *send = bufend;
755 SV *sv = NEWSV(93, send - start);
756 register char *s = start;
757 register char *d = SvPVX(sv);
758 bool dorange = FALSE;
762 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
763 : (lex_inwhat & OP_TRANS)
767 while (s < send || dorange) {
768 if (lex_inwhat == OP_TRANS) {
773 SvGROW(sv, SvLEN(sv) + 256);
777 for (i = (U8)*d; i <= max; i++)
782 else if (*s == '-' && s+1 < send && s != start) {
787 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
788 while (s < send && *s != ')')
791 else if (*s == '#' && lex_inpat &&
792 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
793 while (s+1 < send && *s != '\n')
796 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
798 else if (*s == '$') {
799 if (!lex_inpat) /* not a regexp, so $ must be var */
801 if (s + 1 < send && !strchr(")| \n\t", s[1]))
802 break; /* in regexp, $ might be tail anchor */
804 if (*s == '\\' && s+1 < send) {
806 if (*s && strchr(leave, *s)) {
811 if (lex_inwhat == OP_SUBST && !lex_inpat &&
812 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
815 warn("\\%c better written as $%c", *s, *s);
819 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
825 if (lex_inwhat == OP_TRANS) {
833 case '0': case '1': case '2': case '3':
834 case '4': case '5': case '6': case '7':
835 *d++ = scan_oct(s, 3, &len);
839 *d++ = scan_hex(++s, 2, &len);
875 SvCUR_set(sv, d - SvPVX(sv));
878 if (SvCUR(sv) + 5 < SvLEN(sv)) {
879 SvLEN_set(sv, SvCUR(sv) + 1);
880 Renew(SvPVX(sv), SvLEN(sv), char);
883 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
889 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
896 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
898 if (*s != '{' && *s != '[')
903 /* In a pattern, so maybe we have {n,m}. */
920 /* On the other hand, maybe we have a character class */
923 if (*s == ']' || *s == '^')
926 int weight = 2; /* let's weigh the evidence */
928 unsigned char un_char = 0, last_un_char;
929 char *send = strchr(s,']');
930 char tmpbuf[sizeof tokenbuf * 4];
932 if (!send) /* has to be an expression */
938 else if (isDIGIT(*s)) {
940 if (isDIGIT(s[1]) && s[2] == ']')
946 for (; s < send; s++) {
947 last_un_char = un_char;
948 un_char = (unsigned char)*s;
953 weight -= seen[un_char] * 10;
955 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
956 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
961 else if (*s == '$' && s[1] &&
962 strchr("[#!%*<>()-=",s[1])) {
963 if (/*{*/ strchr("])} =",s[2]))
972 if (strchr("wds]",s[1]))
974 else if (seen['\''] || seen['"'])
976 else if (strchr("rnftbxcav",s[1]))
978 else if (isDIGIT(s[1])) {
980 while (s[1] && isDIGIT(s[1]))
990 if (strchr("aA01! ",last_un_char))
992 if (strchr("zZ79~",s[1]))
996 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
997 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1002 if (keyword(tmpbuf, d - tmpbuf))
1005 if (un_char == last_un_char + 1)
1007 weight -= seen[un_char];
1012 if (weight >= 0) /* probably a character class */
1020 intuit_method(start,gv)
1024 char *s = start + (*start == '$');
1025 char tmpbuf[sizeof tokenbuf];
1035 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1036 if (*start == '$') {
1037 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1042 return *s == '(' ? FUNCMETH : METHOD;
1044 if (!keyword(tmpbuf, len)) {
1045 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1046 if (indirgv && GvCVu(indirgv))
1048 /* filehandle or package name makes it a method */
1049 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1051 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1052 return 0; /* no assumptions -- "=>" quotes bearword */
1053 nextval[nexttoke].opval =
1054 (OP*)newSVOP(OP_CONST, 0,
1056 nextval[nexttoke].opval->op_private =
1061 return *s == '(' ? FUNCMETH : METHOD;
1071 char *pdb = getenv("PERL5DB");
1075 return "BEGIN { require 'perl5db.pl' }";
1081 /* Encoded script support. filter_add() effectively inserts a
1082 * 'pre-processing' function into the current source input stream.
1083 * Note that the filter function only applies to the current source file
1084 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1086 * The datasv parameter (which may be NULL) can be used to pass
1087 * private data to this instance of the filter. The filter function
1088 * can recover the SV using the FILTER_DATA macro and use it to
1089 * store private buffers and state information.
1091 * The supplied datasv parameter is upgraded to a PVIO type
1092 * and the IoDIRP field is used to store the function pointer.
1093 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1094 * private use must be set using malloc'd pointers.
1096 static int filter_debug = 0;
1099 filter_add(funcp, datasv)
1103 if (!funcp){ /* temporary handy debugging hack to be deleted */
1104 filter_debug = atoi((char*)datasv);
1108 rsfp_filters = newAV();
1111 if (!SvUPGRADE(datasv, SVt_PVIO))
1112 die("Can't upgrade filter_add data to SVt_PVIO");
1113 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1115 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1116 av_unshift(rsfp_filters, 1);
1117 av_store(rsfp_filters, 0, datasv) ;
1122 /* Delete most recently added instance of this filter function. */
1128 warn("filter_del func %p", funcp);
1129 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1131 /* if filter is on top of stack (usual case) just pop it off */
1132 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1133 /* sv_free(av_pop(rsfp_filters)); */
1134 sv_free(av_shift(rsfp_filters));
1138 /* we need to search for the correct entry and clear it */
1139 die("filter_del can only delete in reverse order (currently)");
1143 /* Invoke the n'th filter function for the current rsfp. */
1145 filter_read(idx, buf_sv, maxlen)
1148 int maxlen; /* 0 = read one text line */
1155 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1156 /* Provide a default input filter to make life easy. */
1157 /* Note that we append to the line. This is handy. */
1159 warn("filter_read %d: from rsfp\n", idx);
1163 int old_len = SvCUR(buf_sv) ;
1165 /* ensure buf_sv is large enough */
1166 SvGROW(buf_sv, old_len + maxlen) ;
1167 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1168 if (PerlIO_error(rsfp))
1169 return -1; /* error */
1171 return 0 ; /* end of file */
1173 SvCUR_set(buf_sv, old_len + len) ;
1176 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1177 if (PerlIO_error(rsfp))
1178 return -1; /* error */
1180 return 0 ; /* end of file */
1183 return SvCUR(buf_sv);
1185 /* Skip this filter slot if filter has been deleted */
1186 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1188 warn("filter_read %d: skipped (filter deleted)\n", idx);
1189 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1191 /* Get function pointer hidden within datasv */
1192 funcp = (filter_t)IoDIRP(datasv);
1194 warn("filter_read %d: via function %p (%s)\n",
1195 idx, funcp, SvPV(datasv,na));
1196 /* Call function. The function is expected to */
1197 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1198 /* Return: <0:error, =0:eof, >0:not eof */
1199 return (*funcp)(idx, buf_sv, maxlen);
1203 filter_gets(sv,fp, append)
1205 register PerlIO *fp;
1211 SvCUR_set(sv, 0); /* start with empty line */
1212 if (FILTER_READ(0, sv, 0) > 0)
1213 return ( SvPVX(sv) ) ;
1218 return (sv_gets(sv, fp, append));
1224 static char* exp_name[] =
1225 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1228 EXT int yychar; /* last token */
1238 if (pending_ident) {
1239 char pit = pending_ident;
1243 if (strchr(tokenbuf,':'))
1244 croak(no_myglob,tokenbuf);
1245 yylval.opval = newOP(OP_PADANY, 0);
1246 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1250 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1251 if (last_lop_op == OP_SORT &&
1252 tokenbuf[0] == '$' &&
1253 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1256 for (d = in_eval ? oldoldbufptr : linestart;
1257 d < bufend && *d != '\n';
1260 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1261 croak("Can't use \"my %s\" in sort comparison",
1267 yylval.opval = newOP(OP_PADANY, 0);
1268 yylval.opval->op_targ = tmp;
1272 /* Force them to make up their mind on "@foo". */
1273 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1274 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1275 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
1277 sprintf(tmpbuf, "In string, %s now must be written as \\%s",
1278 tokenbuf, tokenbuf);
1283 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1284 yylval.opval->op_private = OPpCONST_ENTERED;
1285 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1286 ((tokenbuf[0] == '$') ? SVt_PV
1287 : (tokenbuf[0] == '@') ? SVt_PVAV
1292 switch (lex_state) {
1294 case LEX_NORMAL: /* Some compilers will produce faster */
1295 case LEX_INTERPNORMAL: /* code if we comment these out. */
1301 yylval = nextval[nexttoke];
1303 lex_state = lex_defer;
1304 expect = lex_expect;
1305 lex_defer = LEX_NORMAL;
1307 return(nexttype[nexttoke]);
1309 case LEX_INTERPCASEMOD:
1311 if (bufptr != bufend && *bufptr != '\\')
1312 croak("panic: INTERPCASEMOD");
1314 if (bufptr == bufend || bufptr[1] == 'E') {
1317 oldmod = lex_casestack[--lex_casemods];
1318 lex_casestack[lex_casemods] = '\0';
1319 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1321 lex_state = LEX_INTERPCONCAT;
1325 if (bufptr != bufend)
1327 lex_state = LEX_INTERPCONCAT;
1332 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1333 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1334 if (strchr("LU", *s) &&
1335 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1337 lex_casestack[--lex_casemods] = '\0';
1340 if (lex_casemods > 10) {
1341 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1342 if (newlb != lex_casestack) {
1344 lex_casestack = newlb;
1347 lex_casestack[lex_casemods++] = *s;
1348 lex_casestack[lex_casemods] = '\0';
1349 lex_state = LEX_INTERPCONCAT;
1350 nextval[nexttoke].ival = 0;
1353 nextval[nexttoke].ival = OP_LCFIRST;
1355 nextval[nexttoke].ival = OP_UCFIRST;
1357 nextval[nexttoke].ival = OP_LC;
1359 nextval[nexttoke].ival = OP_UC;
1361 nextval[nexttoke].ival = OP_QUOTEMETA;
1363 croak("panic: yylex");
1375 case LEX_INTERPPUSH:
1376 return sublex_push();
1378 case LEX_INTERPSTART:
1379 if (bufptr == bufend)
1380 return sublex_done();
1382 lex_dojoin = (*bufptr == '@');
1383 lex_state = LEX_INTERPNORMAL;
1385 nextval[nexttoke].ival = 0;
1387 force_ident("\"", '$');
1388 nextval[nexttoke].ival = 0;
1390 nextval[nexttoke].ival = 0;
1392 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1401 case LEX_INTERPENDMAYBE:
1402 if (intuit_more(bufptr)) {
1403 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1411 lex_state = LEX_INTERPCONCAT;
1415 case LEX_INTERPCONCAT:
1418 croak("panic: INTERPCONCAT");
1420 if (bufptr == bufend)
1421 return sublex_done();
1423 if (SvIVX(linestr) == '\'') {
1424 SV *sv = newSVsv(linestr);
1427 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1431 s = scan_const(bufptr);
1433 lex_state = LEX_INTERPCASEMOD;
1435 lex_state = LEX_INTERPSTART;
1439 nextval[nexttoke] = yylval;
1452 lex_state = LEX_NORMAL;
1453 s = scan_formline(bufptr);
1460 oldoldbufptr = oldbufptr;
1463 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1469 croak("Unrecognized character \\%03o", *s & 255);
1472 goto fake_eof; /* emulate EOF on ^D or ^Z */
1478 yyerror("Missing right bracket");
1482 goto retry; /* ignore stray nulls */
1485 if (!in_eval && !preambled) {
1487 sv_setpv(linestr,incl_perldb());
1489 sv_catpv(linestr,";");
1491 while(AvFILL(preambleav) >= 0) {
1492 SV *tmpsv = av_shift(preambleav);
1493 sv_catsv(linestr, tmpsv);
1494 sv_catpv(linestr, ";");
1497 sv_free((SV*)preambleav);
1500 if (minus_n || minus_p) {
1501 sv_catpv(linestr, "LINE: while (<>) {");
1503 sv_catpv(linestr,"chomp;");
1505 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1507 GvIMPORTED_AV_on(gv);
1510 New(201, tmpbuf1, strlen(splitstr) * 2 + 20, char);
1511 if (strchr("/'\"", *splitstr)
1512 && strchr(splitstr + 1, *splitstr))
1513 sprintf(tmpbuf1, "@F=split(%s);", splitstr);
1516 s = "'~#\200\1'"; /* surely one char is unused...*/
1517 while (s[1] && strchr(splitstr, *s)) s++;
1519 sprintf(tmpbuf1, "@F=split(%s%c",
1520 "q" + (delim == '\''), delim);
1521 d = tmpbuf1 + strlen(tmpbuf1);
1522 for (s = splitstr; *s; ) {
1527 sprintf(d, "%c);", delim);
1529 sv_catpv(linestr,tmpbuf1);
1533 sv_catpv(linestr,"@F=split(' ');");
1536 sv_catpv(linestr, "\n");
1537 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1538 bufend = SvPVX(linestr) + SvCUR(linestr);
1539 if (perldb && curstash != debstash) {
1540 SV *sv = NEWSV(85,0);
1542 sv_upgrade(sv, SVt_PVMG);
1543 sv_setsv(sv,linestr);
1544 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1549 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1552 if (preprocess && !in_eval)
1553 (void)my_pclose(rsfp);
1554 else if ((PerlIO *)rsfp == PerlIO_stdin())
1555 PerlIO_clearerr(rsfp);
1557 (void)PerlIO_close(rsfp);
1560 if (!in_eval && (minus_n || minus_p)) {
1561 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1562 sv_catpv(linestr,";}");
1563 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1564 bufend = SvPVX(linestr) + SvCUR(linestr);
1565 minus_n = minus_p = 0;
1568 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1569 sv_setpv(linestr,"");
1570 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1573 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1576 /* Incest with pod. */
1577 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1578 sv_setpv(linestr, "");
1579 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1580 bufend = SvPVX(linestr) + SvCUR(linestr);
1585 } while (doextract);
1586 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1587 if (perldb && curstash != debstash) {
1588 SV *sv = NEWSV(85,0);
1590 sv_upgrade(sv, SVt_PVMG);
1591 sv_setsv(sv,linestr);
1592 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1594 bufend = SvPVX(linestr) + SvCUR(linestr);
1595 if (curcop->cop_line == 1) {
1596 while (s < bufend && isSPACE(*s))
1598 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1602 if (*s == '#' && *(s+1) == '!')
1604 #ifdef ALTERNATE_SHEBANG
1606 static char as[] = ALTERNATE_SHEBANG;
1607 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1608 d = s + (sizeof(as) - 1);
1610 #endif /* ALTERNATE_SHEBANG */
1619 while (*d && !isSPACE(*d))
1623 #ifdef ARG_ZERO_IS_SCRIPT
1624 if (ipathend > ipath) {
1626 * HP-UX (at least) sets argv[0] to the script name,
1627 * which makes $^X incorrect. And Digital UNIX and Linux,
1628 * at least, set argv[0] to the basename of the Perl
1629 * interpreter. So, having found "#!", we'll set it right.
1631 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1632 assert(SvPOK(x) || SvGMAGICAL(x));
1633 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1634 sv_setpvn(x, ipath, ipathend - ipath);
1637 TAINT_NOT; /* $^X is always tainted, but that's OK */
1639 #endif /* ARG_ZERO_IS_SCRIPT */
1644 d = instr(s,"perl -");
1646 d = instr(s,"perl");
1647 #ifdef ALTERNATE_SHEBANG
1649 * If the ALTERNATE_SHEBANG on this system starts with a
1650 * character that can be part of a Perl expression, then if
1651 * we see it but not "perl", we're probably looking at the
1652 * start of Perl code, not a request to hand off to some
1653 * other interpreter. Similarly, if "perl" is there, but
1654 * not in the first 'word' of the line, we assume the line
1655 * contains the start of the Perl program.
1657 if (d && *s != '#') {
1659 while (*c && !strchr("; \t\r\n\f\v#", *c))
1662 d = Nullch; /* "perl" not in first word; ignore */
1664 *s = '#'; /* Don't try to parse shebang line */
1666 #endif /* ALTERNATE_SHEBANG */
1671 !instr(s,"indir") &&
1672 instr(origargv[0],"perl"))
1678 while (s < bufend && isSPACE(*s))
1681 Newz(899,newargv,origargc+3,char*);
1683 while (s < bufend && !isSPACE(*s))
1686 Copy(origargv+1, newargv+2, origargc+1, char*);
1691 execv(ipath, newargv);
1692 croak("Can't exec %s", ipath);
1695 U32 oldpdb = perldb;
1696 bool oldn = minus_n;
1697 bool oldp = minus_p;
1699 while (*d && !isSPACE(*d)) d++;
1700 while (*d == ' ' || *d == '\t') d++;
1704 if (*d == 'M' || *d == 'm') {
1706 while (*d && !isSPACE(*d)) d++;
1707 croak("Too late for \"-%.*s\" option",
1710 d = moreswitches(d);
1712 if (perldb && !oldpdb ||
1713 ( minus_n || minus_p ) && !(oldn || oldp) )
1714 /* if we have already added "LINE: while (<>) {",
1715 we must not do it again */
1717 sv_setpv(linestr, "");
1718 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1719 bufend = SvPVX(linestr) + SvCUR(linestr);
1722 (void)gv_fetchfile(origfilename);
1729 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1731 lex_state = LEX_FORMLINE;
1736 warn("Illegal character \\%03o (carriage return)", '\r');
1738 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1739 case ' ': case '\t': case '\f': case 013:
1744 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1746 while (s < d && *s != '\n')
1751 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1753 lex_state = LEX_FORMLINE;
1763 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1768 while (s < bufend && (*s == ' ' || *s == '\t'))
1771 if (strnEQ(s,"=>",2)) {
1773 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1774 (int)tmp, (int)tmp);
1775 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1776 OPERATOR('-'); /* unary minus */
1778 last_uni = oldbufptr;
1779 last_lop_op = OP_FTEREAD; /* good enough */
1781 case 'r': FTST(OP_FTEREAD);
1782 case 'w': FTST(OP_FTEWRITE);
1783 case 'x': FTST(OP_FTEEXEC);
1784 case 'o': FTST(OP_FTEOWNED);
1785 case 'R': FTST(OP_FTRREAD);
1786 case 'W': FTST(OP_FTRWRITE);
1787 case 'X': FTST(OP_FTREXEC);
1788 case 'O': FTST(OP_FTROWNED);
1789 case 'e': FTST(OP_FTIS);
1790 case 'z': FTST(OP_FTZERO);
1791 case 's': FTST(OP_FTSIZE);
1792 case 'f': FTST(OP_FTFILE);
1793 case 'd': FTST(OP_FTDIR);
1794 case 'l': FTST(OP_FTLINK);
1795 case 'p': FTST(OP_FTPIPE);
1796 case 'S': FTST(OP_FTSOCK);
1797 case 'u': FTST(OP_FTSUID);
1798 case 'g': FTST(OP_FTSGID);
1799 case 'k': FTST(OP_FTSVTX);
1800 case 'b': FTST(OP_FTBLK);
1801 case 'c': FTST(OP_FTCHR);
1802 case 't': FTST(OP_FTTTY);
1803 case 'T': FTST(OP_FTTEXT);
1804 case 'B': FTST(OP_FTBINARY);
1805 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1806 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1807 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1809 croak("Unrecognized file test: -%c", (int)tmp);
1816 if (expect == XOPERATOR)
1821 else if (*s == '>') {
1824 if (isIDFIRST(*s)) {
1825 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1833 if (expect == XOPERATOR)
1836 if (isSPACE(*s) || !isSPACE(*bufptr))
1838 OPERATOR('-'); /* unary minus */
1845 if (expect == XOPERATOR)
1850 if (expect == XOPERATOR)
1853 if (isSPACE(*s) || !isSPACE(*bufptr))
1859 if (expect != XOPERATOR) {
1860 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1862 force_ident(tokenbuf, '*');
1875 if (expect == XOPERATOR) {
1880 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1883 yyerror("Final % should be \\% or %name");
1886 pending_ident = '%';
1908 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1909 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1914 if (curcop->cop_line < copline)
1915 copline = curcop->cop_line;
1926 if (lex_brackets <= 0)
1927 yyerror("Unmatched right bracket");
1930 if (lex_state == LEX_INTERPNORMAL) {
1931 if (lex_brackets == 0) {
1932 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1933 lex_state = LEX_INTERPEND;
1940 if (lex_brackets > 100) {
1941 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1942 if (newlb != lex_brackstack) {
1944 lex_brackstack = newlb;
1949 if (lex_formbrack) {
1953 if (oldoldbufptr == last_lop)
1954 lex_brackstack[lex_brackets++] = XTERM;
1956 lex_brackstack[lex_brackets++] = XOPERATOR;
1957 OPERATOR(HASHBRACK);
1959 while (s < bufend && (*s == ' ' || *s == '\t'))
1963 if (d < bufend && *d == '-') {
1966 while (d < bufend && (*d == ' ' || *d == '\t'))
1969 if (d < bufend && isIDFIRST(*d)) {
1970 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1972 while (d < bufend && (*d == ' ' || *d == '\t'))
1975 char minus = (tokenbuf[0] == '-');
1977 (keyword(tokenbuf + 1, len) ||
1978 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1979 perl_get_cv(tokenbuf + 1, FALSE) ))
1980 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1981 tokenbuf + !minus, tokenbuf + !minus);
1982 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1989 lex_brackstack[lex_brackets++] = XSTATE;
1993 lex_brackstack[lex_brackets++] = XOPERATOR;
1998 if (oldoldbufptr == last_lop)
1999 lex_brackstack[lex_brackets++] = XTERM;
2001 lex_brackstack[lex_brackets++] = XOPERATOR;
2004 OPERATOR(HASHBRACK);
2006 for (t = s; t < bufend && isALNUM(*t); t++) ;
2008 else if (*s == '\'' || *s == '"') {
2015 while (t < bufend && isSPACE(*t))
2017 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2018 OPERATOR(HASHBRACK);
2022 lex_brackstack[lex_brackets-1] = XSTATE;
2028 yylval.ival = curcop->cop_line;
2029 if (isSPACE(*s) || *s == '#')
2030 copline = NOLINE; /* invalidate current command line number */
2035 if (lex_brackets <= 0)
2036 yyerror("Unmatched right bracket");
2038 expect = (expectation)lex_brackstack[--lex_brackets];
2039 if (lex_brackets < lex_formbrack)
2041 if (lex_state == LEX_INTERPNORMAL) {
2042 if (lex_brackets == 0) {
2043 if (lex_fakebrack) {
2044 lex_state = LEX_INTERPEND;
2046 return yylex(); /* ignore fake brackets */
2048 if (*s == '-' && s[1] == '>')
2049 lex_state = LEX_INTERPENDMAYBE;
2050 else if (*s != '[' && *s != '{')
2051 lex_state = LEX_INTERPEND;
2054 if (lex_brackets < lex_fakebrack) {
2057 return yylex(); /* ignore fake brackets */
2067 if (expect == XOPERATOR) {
2068 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2076 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2079 force_ident(tokenbuf, '&');
2083 yylval.ival = (OPpENTERSUB_AMPER<<8);
2102 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2103 warn("Reversed %c= operator",(int)tmp);
2105 if (expect == XSTATE && isALPHA(tmp) &&
2106 (s == linestart+1 || s[-2] == '\n') )
2108 if (in_eval && !rsfp) {
2113 if (strnEQ(s,"=cut",4)) {
2130 if (lex_brackets < lex_formbrack) {
2132 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2133 if (*t == '\n' || *t == '#') {
2151 if (expect != XOPERATOR) {
2152 if (s[1] != '<' && !strchr(s,'>'))
2155 s = scan_heredoc(s);
2157 s = scan_inputsymbol(s);
2158 TERM(sublex_start());
2163 SHop(OP_LEFT_SHIFT);
2177 SHop(OP_RIGHT_SHIFT);
2186 if (expect == XOPERATOR) {
2187 if (lex_formbrack && lex_brackets == lex_formbrack) {
2190 return ','; /* grandfather non-comma-format format */
2194 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2195 if (expect == XOPERATOR)
2196 no_op("Array length", bufptr);
2198 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2203 pending_ident = '#';
2207 if (expect == XOPERATOR)
2208 no_op("Scalar", bufptr);
2210 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2213 yyerror("Final $ should be \\$ or $name");
2217 /* This kludge not intended to be bulletproof. */
2218 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2219 yylval.opval = newSVOP(OP_CONST, 0,
2220 newSViv((IV)compiling.cop_arybase));
2221 yylval.opval->op_private = OPpCONST_ARYBASE;
2226 if (lex_state == LEX_NORMAL)
2229 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2235 isSPACE(*t) || isALNUM(*t) || *t == '$';
2238 bufptr = skipspace(bufptr);
2239 while (t < bufend && *t != ']')
2241 warn("Multidimensional syntax %.*s not supported",
2242 (t - bufptr) + 1, bufptr);
2246 else if (*s == '{') {
2248 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2249 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2251 char tmpbuf[sizeof tokenbuf];
2253 for (t++; isSPACE(*t); t++) ;
2254 if (isIDFIRST(*t)) {
2255 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2256 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2257 warn("You need to quote \"%s\"", tmpbuf);
2264 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2265 bool islop = (last_lop == oldoldbufptr);
2266 if (!islop || last_lop_op == OP_GREPSTART)
2268 else if (strchr("$@\"'`q", *s))
2269 expect = XTERM; /* e.g. print $fh "foo" */
2270 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2271 expect = XTERM; /* e.g. print $fh &sub */
2272 else if (isIDFIRST(*s)) {
2273 char tmpbuf[sizeof tokenbuf];
2274 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2275 if (keyword(tmpbuf, len))
2276 expect = XTERM; /* e.g. print $fh length() */
2278 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2279 if (gv && GvCVu(gv))
2280 expect = XTERM; /* e.g. print $fh subr() */
2283 else if (isDIGIT(*s))
2284 expect = XTERM; /* e.g. print $fh 3 */
2285 else if (*s == '.' && isDIGIT(s[1]))
2286 expect = XTERM; /* e.g. print $fh .3 */
2287 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2288 expect = XTERM; /* e.g. print $fh -1 */
2289 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2290 expect = XTERM; /* print $fh <<"EOF" */
2292 pending_ident = '$';
2296 if (expect == XOPERATOR)
2299 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2302 yyerror("Final @ should be \\@ or @name");
2305 if (lex_state == LEX_NORMAL)
2307 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2311 /* Warn about @ where they meant $. */
2313 if (*s == '[' || *s == '{') {
2315 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2317 if (*t == '}' || *t == ']') {
2319 bufptr = skipspace(bufptr);
2320 warn("Scalar value %.*s better written as $%.*s",
2321 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2326 pending_ident = '@';
2329 case '/': /* may either be division or pattern */
2330 case '?': /* may either be conditional or pattern */
2331 if (expect != XOPERATOR) {
2334 TERM(sublex_start());
2342 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2343 (s == linestart || s[-1] == '\n') ) {
2348 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2354 yylval.ival = OPf_SPECIAL;
2360 if (expect != XOPERATOR)
2365 case '0': case '1': case '2': case '3': case '4':
2366 case '5': case '6': case '7': case '8': case '9':
2368 if (expect == XOPERATOR)
2374 if (expect == XOPERATOR) {
2375 if (lex_formbrack && lex_brackets == lex_formbrack) {
2378 return ','; /* grandfather non-comma-format format */
2384 missingterm((char*)0);
2385 yylval.ival = OP_CONST;
2386 TERM(sublex_start());
2390 if (expect == XOPERATOR) {
2391 if (lex_formbrack && lex_brackets == lex_formbrack) {
2394 return ','; /* grandfather non-comma-format format */
2400 missingterm((char*)0);
2401 yylval.ival = OP_CONST;
2402 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2403 if (*d == '$' || *d == '@' || *d == '\\') {
2404 yylval.ival = OP_STRINGIFY;
2408 TERM(sublex_start());
2412 if (expect == XOPERATOR)
2413 no_op("Backticks",s);
2415 missingterm((char*)0);
2416 yylval.ival = OP_BACKTICK;
2418 TERM(sublex_start());
2422 if (dowarn && lex_inwhat && isDIGIT(*s))
2423 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2424 if (expect == XOPERATOR)
2425 no_op("Backslash",s);
2429 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2465 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2467 /* Some keywords can be followed by any delimiter, including ':' */
2468 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2469 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2470 (tokenbuf[0] == 'q' &&
2471 strchr("qwx", tokenbuf[1]))));
2473 /* x::* is just a word, unless x is "CORE" */
2474 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2478 while (d < bufend && isSPACE(*d))
2479 d++; /* no comments skipped here, or s### is misparsed */
2481 /* Is this a label? */
2482 if (!tmp && expect == XSTATE
2483 && d < bufend && *d == ':' && *(d + 1) != ':') {
2485 yylval.pval = savepv(tokenbuf);
2490 /* Check for keywords */
2491 tmp = keyword(tokenbuf, len);
2493 /* Is this a word before a => operator? */
2494 if (strnEQ(d,"=>",2)) {
2496 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2497 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2498 tokenbuf, tokenbuf);
2499 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2500 yylval.opval->op_private = OPpCONST_BARE;
2504 if (tmp < 0) { /* second-class keyword? */
2506 if (expect != XOPERATOR &&
2507 (*s != ':' || s[1] != ':') &&
2508 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2520 default: /* not a keyword */
2524 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2526 /* Get the rest if it looks like a package qualifier */
2528 if (*s == '\'' || *s == ':' && s[1] == ':') {
2529 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2532 croak("Bad name after %s::", tokenbuf);
2535 if (expect == XOPERATOR) {
2536 if (bufptr == linestart) {
2542 no_op("Bareword",s);
2545 /* Look for a subroutine with this name in current package. */
2547 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2549 /* Presume this is going to be a bareword of some sort. */
2552 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2553 yylval.opval->op_private = OPpCONST_BARE;
2555 /* See if it's the indirect object for a list operator. */
2558 oldoldbufptr < bufptr &&
2559 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2560 /* NO SKIPSPACE BEFORE HERE! */
2562 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2564 bool immediate_paren = *s == '(';
2566 /* (Now we can afford to cross potential line boundary.) */
2569 /* Two barewords in a row may indicate method call. */
2571 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2574 /* If not a declared subroutine, it's an indirect object. */
2575 /* (But it's an indir obj regardless for sort.) */
2577 if ((last_lop_op == OP_SORT ||
2578 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2579 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2580 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2585 /* If followed by a paren, it's certainly a subroutine. */
2591 if (gv && GvCVu(gv)) {
2592 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2593 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2598 nextval[nexttoke].opval = yylval.opval;
2605 /* If followed by var or block, call it a method (unless sub) */
2607 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2608 last_lop = oldbufptr;
2609 last_lop_op = OP_METHOD;
2613 /* If followed by a bareword, see if it looks like indir obj. */
2615 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2618 /* Not a method, so call it a subroutine (if defined) */
2620 if (gv && GvCVu(gv)) {
2622 if (lastchar == '-')
2623 warn("Ambiguous use of -%s resolved as -&%s()",
2624 tokenbuf, tokenbuf);
2625 last_lop = oldbufptr;
2626 last_lop_op = OP_ENTERSUB;
2627 /* Check for a constant sub */
2628 if ((sv = cv_const_sv(cv))) {
2630 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2631 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2632 yylval.opval->op_private = 0;
2636 /* Resolve to GV now. */
2637 op_free(yylval.opval);
2638 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2639 /* Is there a prototype? */
2642 char *proto = SvPV((SV*)cv, len);
2645 if (strEQ(proto, "$"))
2647 if (*proto == '&' && *s == '{') {
2648 sv_setpv(subname,"__ANON__");
2652 nextval[nexttoke].opval = yylval.opval;
2658 if (hints & HINT_STRICT_SUBS &&
2661 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2662 last_lop_op != OP_ACCEPT &&
2663 last_lop_op != OP_PIPE_OP &&
2664 last_lop_op != OP_SOCKPAIR)
2667 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2672 /* Call it a bare word */
2676 if (lastchar != '-') {
2677 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2679 warn(warn_reserved, tokenbuf);
2682 if (lastchar && strchr("*%&", lastchar)) {
2683 warn("Operator or semicolon missing before %c%s",
2684 lastchar, tokenbuf);
2685 warn("Ambiguous use of %c resolved as operator %c",
2686 lastchar, lastchar);
2693 if (tokenbuf[2] == 'L')
2694 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2696 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2697 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2700 case KEY___PACKAGE__:
2701 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2703 ? newSVsv(curstname)
2712 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2714 char *pname = "main";
2715 if (tokenbuf[2] == 'D')
2716 pname = HvNAME(curstash ? curstash : defstash);
2717 sprintf(dname,"%s::DATA", pname);
2718 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
2721 GvIOp(gv) = newIO();
2722 IoIFP(GvIOp(gv)) = rsfp;
2723 #if defined(HAS_FCNTL) && defined(F_SETFD)
2725 int fd = PerlIO_fileno(rsfp);
2726 fcntl(fd,F_SETFD,fd >= 3);
2729 /* Mark this internal pseudo-handle as clean */
2730 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2732 IoTYPE(GvIOp(gv)) = '|';
2733 else if ((PerlIO*)rsfp == PerlIO_stdin())
2734 IoTYPE(GvIOp(gv)) = '-';
2736 IoTYPE(GvIOp(gv)) = '<';
2746 if (expect == XSTATE) {
2753 if (*s == ':' && s[1] == ':') {
2756 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2757 tmp = keyword(tokenbuf, len);
2771 LOP(OP_ACCEPT,XTERM);
2777 LOP(OP_ATAN2,XTERM);
2786 LOP(OP_BLESS,XTERM);
2795 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2815 LOP(OP_CRYPT,XTERM);
2819 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2820 if (*d != '0' && isDIGIT(*d))
2821 yywarn("chmod: mode argument is missing initial 0");
2823 LOP(OP_CHMOD,XTERM);
2826 LOP(OP_CHOWN,XTERM);
2829 LOP(OP_CONNECT,XTERM);
2845 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2849 hints |= HINT_BLOCK_SCOPE;
2859 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2860 LOP(OP_DBMOPEN,XTERM);
2866 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2873 yylval.ival = curcop->cop_line;
2887 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2888 UNIBRACK(OP_ENTEREVAL);
2903 case KEY_endhostent:
2909 case KEY_endservent:
2912 case KEY_endprotoent:
2923 yylval.ival = curcop->cop_line;
2925 if (isIDFIRST(*s)) {
2927 if ((bufend - p) >= 3 &&
2928 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2932 croak("Missing $ on loop variable");
2937 LOP(OP_FORMLINE,XTERM);
2943 LOP(OP_FCNTL,XTERM);
2949 LOP(OP_FLOCK,XTERM);
2958 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2961 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2976 case KEY_getpriority:
2977 LOP(OP_GETPRIORITY,XTERM);
2979 case KEY_getprotobyname:
2982 case KEY_getprotobynumber:
2983 LOP(OP_GPBYNUMBER,XTERM);
2985 case KEY_getprotoent:
2997 case KEY_getpeername:
2998 UNI(OP_GETPEERNAME);
3000 case KEY_gethostbyname:
3003 case KEY_gethostbyaddr:
3004 LOP(OP_GHBYADDR,XTERM);
3006 case KEY_gethostent:
3009 case KEY_getnetbyname:
3012 case KEY_getnetbyaddr:
3013 LOP(OP_GNBYADDR,XTERM);
3018 case KEY_getservbyname:
3019 LOP(OP_GSBYNAME,XTERM);
3021 case KEY_getservbyport:
3022 LOP(OP_GSBYPORT,XTERM);
3024 case KEY_getservent:
3027 case KEY_getsockname:
3028 UNI(OP_GETSOCKNAME);
3030 case KEY_getsockopt:
3031 LOP(OP_GSOCKOPT,XTERM);
3053 yylval.ival = curcop->cop_line;
3057 LOP(OP_INDEX,XTERM);
3063 LOP(OP_IOCTL,XTERM);
3075 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3106 LOP(OP_LISTEN,XTERM);
3113 TERM(sublex_start());
3116 LOP(OP_MAPSTART,XREF);
3119 LOP(OP_MKDIR,XTERM);
3122 LOP(OP_MSGCTL,XTERM);
3125 LOP(OP_MSGGET,XTERM);
3128 LOP(OP_MSGRCV,XTERM);
3131 LOP(OP_MSGSND,XTERM);
3138 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3145 if (expect != XSTATE)
3146 yyerror("\"no\" not allowed in expression");
3147 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3148 s = force_version(s);
3157 if (isIDFIRST(*s)) {
3159 for (d = s; isALNUM(*d); d++) ;
3161 if (strchr("|&*+-=!?:.", *t))
3162 warn("Precedence problem: open %.*s should be open(%.*s)",
3168 yylval.ival = OP_OR;
3178 LOP(OP_OPEN_DIR,XTERM);
3181 checkcomma(s,tokenbuf,"filehandle");
3185 checkcomma(s,tokenbuf,"filehandle");
3204 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3208 LOP(OP_PIPE_OP,XTERM);
3213 missingterm((char*)0);
3214 yylval.ival = OP_CONST;
3215 TERM(sublex_start());
3223 missingterm((char*)0);
3224 if (dowarn && SvLEN(lex_stuff)) {
3225 d = SvPV_force(lex_stuff, len);
3226 for (; len; --len, ++d) {
3228 warn("Possible attempt to separate words with commas");
3232 warn("Possible attempt to put comments in qw() list");
3238 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3242 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3245 yylval.ival = OP_SPLIT;
3249 last_lop = oldbufptr;
3250 last_lop_op = OP_SPLIT;
3256 missingterm((char*)0);
3257 yylval.ival = OP_STRINGIFY;
3258 if (SvIVX(lex_stuff) == '\'')
3259 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3260 TERM(sublex_start());
3265 missingterm((char*)0);
3266 yylval.ival = OP_BACKTICK;
3268 TERM(sublex_start());
3275 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3276 if (isIDFIRST(*tokenbuf))
3277 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3279 yyerror("<> should be quotes");
3286 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3290 LOP(OP_RENAME,XTERM);
3299 LOP(OP_RINDEX,XTERM);
3322 LOP(OP_REVERSE,XTERM);
3333 TERM(sublex_start());
3335 TOKEN(1); /* force error */
3344 LOP(OP_SELECT,XTERM);
3350 LOP(OP_SEMCTL,XTERM);
3353 LOP(OP_SEMGET,XTERM);
3356 LOP(OP_SEMOP,XTERM);
3362 LOP(OP_SETPGRP,XTERM);
3364 case KEY_setpriority:
3365 LOP(OP_SETPRIORITY,XTERM);
3367 case KEY_sethostent:
3373 case KEY_setservent:
3376 case KEY_setprotoent:
3386 LOP(OP_SEEKDIR,XTERM);
3388 case KEY_setsockopt:
3389 LOP(OP_SSOCKOPT,XTERM);
3395 LOP(OP_SHMCTL,XTERM);
3398 LOP(OP_SHMGET,XTERM);
3401 LOP(OP_SHMREAD,XTERM);
3404 LOP(OP_SHMWRITE,XTERM);
3407 LOP(OP_SHUTDOWN,XTERM);
3416 LOP(OP_SOCKET,XTERM);
3418 case KEY_socketpair:
3419 LOP(OP_SOCKPAIR,XTERM);
3422 checkcomma(s,tokenbuf,"subroutine name");
3424 if (*s == ';' || *s == ')') /* probably a close */
3425 croak("sort is now a reserved word");
3427 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3431 LOP(OP_SPLIT,XTERM);
3434 LOP(OP_SPRINTF,XTERM);
3437 LOP(OP_SPLICE,XTERM);
3453 LOP(OP_SUBSTR,XTERM);
3460 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3461 char tmpbuf[sizeof tokenbuf];
3463 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3464 if (strchr(tmpbuf, ':'))
3465 sv_setpv(subname, tmpbuf);
3467 sv_setsv(subname,curstname);
3468 sv_catpvn(subname,"::",2);
3469 sv_catpvn(subname,tmpbuf,len);
3471 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3475 expect = XTERMBLOCK;
3476 sv_setpv(subname,"?");
3479 if (tmp == KEY_format) {
3482 lex_formbrack = lex_brackets + 1;
3486 /* Look for a prototype */
3493 SvREFCNT_dec(lex_stuff);
3495 croak("Prototype not terminated");
3498 d = SvPVX(lex_stuff);
3500 for (p = d; *p; ++p) {
3505 SvCUR(lex_stuff) = tmp;
3508 nextval[1] = nextval[0];
3509 nexttype[1] = nexttype[0];
3510 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3511 nexttype[0] = THING;
3512 if (nexttoke == 1) {
3513 lex_defer = lex_state;
3514 lex_expect = expect;
3515 lex_state = LEX_KNOWNEXT;
3520 if (*SvPV(subname,na) == '?') {
3521 sv_setpv(subname,"__ANON__");
3528 LOP(OP_SYSTEM,XREF);
3531 LOP(OP_SYMLINK,XTERM);
3534 LOP(OP_SYSCALL,XTERM);
3537 LOP(OP_SYSOPEN,XTERM);
3540 LOP(OP_SYSSEEK,XTERM);
3543 LOP(OP_SYSREAD,XTERM);
3546 LOP(OP_SYSWRITE,XTERM);
3550 TERM(sublex_start());
3571 LOP(OP_TRUNCATE,XTERM);
3583 yylval.ival = curcop->cop_line;
3587 yylval.ival = curcop->cop_line;
3591 LOP(OP_UNLINK,XTERM);
3597 LOP(OP_UNPACK,XTERM);
3600 LOP(OP_UTIME,XTERM);
3604 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3605 if (*d != '0' && isDIGIT(*d))
3606 yywarn("umask: argument is missing initial 0");
3611 LOP(OP_UNSHIFT,XTERM);
3614 if (expect != XSTATE)
3615 yyerror("\"use\" not allowed in expression");
3618 s = force_version(s);
3619 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3620 nextval[nexttoke].opval = Nullop;
3625 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3626 s = force_version(s);
3639 yylval.ival = curcop->cop_line;
3643 hints |= HINT_BLOCK_SCOPE;
3650 LOP(OP_WAITPID,XTERM);
3656 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3660 if (expect == XOPERATOR)
3666 yylval.ival = OP_XOR;
3671 TERM(sublex_start());
3684 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3685 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3686 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3687 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3688 if (strEQ(d,"__END__")) return KEY___END__;
3692 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3697 if (strEQ(d,"and")) return -KEY_and;
3698 if (strEQ(d,"abs")) return -KEY_abs;
3701 if (strEQ(d,"alarm")) return -KEY_alarm;
3702 if (strEQ(d,"atan2")) return -KEY_atan2;
3705 if (strEQ(d,"accept")) return -KEY_accept;
3710 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3713 if (strEQ(d,"bless")) return -KEY_bless;
3714 if (strEQ(d,"bind")) return -KEY_bind;
3715 if (strEQ(d,"binmode")) return -KEY_binmode;
3718 if (strEQ(d,"CORE")) return -KEY_CORE;
3723 if (strEQ(d,"cmp")) return -KEY_cmp;
3724 if (strEQ(d,"chr")) return -KEY_chr;
3725 if (strEQ(d,"cos")) return -KEY_cos;
3728 if (strEQ(d,"chop")) return KEY_chop;
3731 if (strEQ(d,"close")) return -KEY_close;
3732 if (strEQ(d,"chdir")) return -KEY_chdir;
3733 if (strEQ(d,"chomp")) return KEY_chomp;
3734 if (strEQ(d,"chmod")) return -KEY_chmod;
3735 if (strEQ(d,"chown")) return -KEY_chown;
3736 if (strEQ(d,"crypt")) return -KEY_crypt;
3739 if (strEQ(d,"chroot")) return -KEY_chroot;
3740 if (strEQ(d,"caller")) return -KEY_caller;
3743 if (strEQ(d,"connect")) return -KEY_connect;
3746 if (strEQ(d,"closedir")) return -KEY_closedir;
3747 if (strEQ(d,"continue")) return -KEY_continue;
3752 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3757 if (strEQ(d,"do")) return KEY_do;
3760 if (strEQ(d,"die")) return -KEY_die;
3763 if (strEQ(d,"dump")) return -KEY_dump;
3766 if (strEQ(d,"delete")) return KEY_delete;
3769 if (strEQ(d,"defined")) return KEY_defined;
3770 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3773 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3778 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3779 if (strEQ(d,"END")) return KEY_END;
3784 if (strEQ(d,"eq")) return -KEY_eq;
3787 if (strEQ(d,"eof")) return -KEY_eof;
3788 if (strEQ(d,"exp")) return -KEY_exp;
3791 if (strEQ(d,"else")) return KEY_else;
3792 if (strEQ(d,"exit")) return -KEY_exit;
3793 if (strEQ(d,"eval")) return KEY_eval;
3794 if (strEQ(d,"exec")) return -KEY_exec;
3795 if (strEQ(d,"each")) return KEY_each;
3798 if (strEQ(d,"elsif")) return KEY_elsif;
3801 if (strEQ(d,"exists")) return KEY_exists;
3802 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3805 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3806 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3809 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3812 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3813 if (strEQ(d,"endservent")) return -KEY_endservent;
3816 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3823 if (strEQ(d,"for")) return KEY_for;
3826 if (strEQ(d,"fork")) return -KEY_fork;
3829 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3830 if (strEQ(d,"flock")) return -KEY_flock;
3833 if (strEQ(d,"format")) return KEY_format;
3834 if (strEQ(d,"fileno")) return -KEY_fileno;
3837 if (strEQ(d,"foreach")) return KEY_foreach;
3840 if (strEQ(d,"formline")) return -KEY_formline;
3846 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3847 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3851 if (strnEQ(d,"get",3)) {
3856 if (strEQ(d,"ppid")) return -KEY_getppid;
3857 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3860 if (strEQ(d,"pwent")) return -KEY_getpwent;
3861 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3862 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3865 if (strEQ(d,"peername")) return -KEY_getpeername;
3866 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3867 if (strEQ(d,"priority")) return -KEY_getpriority;
3870 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3873 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3877 else if (*d == 'h') {
3878 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3879 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3880 if (strEQ(d,"hostent")) return -KEY_gethostent;
3882 else if (*d == 'n') {
3883 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3884 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3885 if (strEQ(d,"netent")) return -KEY_getnetent;
3887 else if (*d == 's') {
3888 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3889 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3890 if (strEQ(d,"servent")) return -KEY_getservent;
3891 if (strEQ(d,"sockname")) return -KEY_getsockname;
3892 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3894 else if (*d == 'g') {
3895 if (strEQ(d,"grent")) return -KEY_getgrent;
3896 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3897 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3899 else if (*d == 'l') {
3900 if (strEQ(d,"login")) return -KEY_getlogin;
3902 else if (strEQ(d,"c")) return -KEY_getc;
3907 if (strEQ(d,"gt")) return -KEY_gt;
3908 if (strEQ(d,"ge")) return -KEY_ge;
3911 if (strEQ(d,"grep")) return KEY_grep;
3912 if (strEQ(d,"goto")) return KEY_goto;
3913 if (strEQ(d,"glob")) return -KEY_glob;
3916 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3921 if (strEQ(d,"hex")) return -KEY_hex;
3926 if (strEQ(d,"if")) return KEY_if;
3929 if (strEQ(d,"int")) return -KEY_int;
3932 if (strEQ(d,"index")) return -KEY_index;
3933 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3938 if (strEQ(d,"join")) return -KEY_join;
3942 if (strEQ(d,"keys")) return KEY_keys;
3943 if (strEQ(d,"kill")) return -KEY_kill;
3948 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3949 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3955 if (strEQ(d,"lt")) return -KEY_lt;
3956 if (strEQ(d,"le")) return -KEY_le;
3957 if (strEQ(d,"lc")) return -KEY_lc;
3960 if (strEQ(d,"log")) return -KEY_log;
3963 if (strEQ(d,"last")) return KEY_last;
3964 if (strEQ(d,"link")) return -KEY_link;
3967 if (strEQ(d,"local")) return KEY_local;
3968 if (strEQ(d,"lstat")) return -KEY_lstat;
3971 if (strEQ(d,"length")) return -KEY_length;
3972 if (strEQ(d,"listen")) return -KEY_listen;
3975 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3978 if (strEQ(d,"localtime")) return -KEY_localtime;
3984 case 1: return KEY_m;
3986 if (strEQ(d,"my")) return KEY_my;
3989 if (strEQ(d,"map")) return KEY_map;
3992 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3995 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3996 if (strEQ(d,"msgget")) return -KEY_msgget;
3997 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3998 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4003 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4006 if (strEQ(d,"next")) return KEY_next;
4007 if (strEQ(d,"ne")) return -KEY_ne;
4008 if (strEQ(d,"not")) return -KEY_not;
4009 if (strEQ(d,"no")) return KEY_no;
4014 if (strEQ(d,"or")) return -KEY_or;
4017 if (strEQ(d,"ord")) return -KEY_ord;
4018 if (strEQ(d,"oct")) return -KEY_oct;
4021 if (strEQ(d,"open")) return -KEY_open;
4024 if (strEQ(d,"opendir")) return -KEY_opendir;
4031 if (strEQ(d,"pop")) return KEY_pop;
4032 if (strEQ(d,"pos")) return KEY_pos;
4035 if (strEQ(d,"push")) return KEY_push;
4036 if (strEQ(d,"pack")) return -KEY_pack;
4037 if (strEQ(d,"pipe")) return -KEY_pipe;
4040 if (strEQ(d,"print")) return KEY_print;
4043 if (strEQ(d,"printf")) return KEY_printf;
4046 if (strEQ(d,"package")) return KEY_package;
4049 if (strEQ(d,"prototype")) return KEY_prototype;
4054 if (strEQ(d,"q")) return KEY_q;
4055 if (strEQ(d,"qq")) return KEY_qq;
4056 if (strEQ(d,"qw")) return KEY_qw;
4057 if (strEQ(d,"qx")) return KEY_qx;
4059 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4064 if (strEQ(d,"ref")) return -KEY_ref;
4067 if (strEQ(d,"read")) return -KEY_read;
4068 if (strEQ(d,"rand")) return -KEY_rand;
4069 if (strEQ(d,"recv")) return -KEY_recv;
4070 if (strEQ(d,"redo")) return KEY_redo;
4073 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4074 if (strEQ(d,"reset")) return -KEY_reset;
4077 if (strEQ(d,"return")) return KEY_return;
4078 if (strEQ(d,"rename")) return -KEY_rename;
4079 if (strEQ(d,"rindex")) return -KEY_rindex;
4082 if (strEQ(d,"require")) return -KEY_require;
4083 if (strEQ(d,"reverse")) return -KEY_reverse;
4084 if (strEQ(d,"readdir")) return -KEY_readdir;
4087 if (strEQ(d,"readlink")) return -KEY_readlink;
4088 if (strEQ(d,"readline")) return -KEY_readline;
4089 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4092 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4098 case 0: return KEY_s;
4100 if (strEQ(d,"scalar")) return KEY_scalar;
4105 if (strEQ(d,"seek")) return -KEY_seek;
4106 if (strEQ(d,"send")) return -KEY_send;
4109 if (strEQ(d,"semop")) return -KEY_semop;
4112 if (strEQ(d,"select")) return -KEY_select;
4113 if (strEQ(d,"semctl")) return -KEY_semctl;
4114 if (strEQ(d,"semget")) return -KEY_semget;
4117 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4118 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4121 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4122 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4125 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4128 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4129 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4130 if (strEQ(d,"setservent")) return -KEY_setservent;
4133 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4134 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4141 if (strEQ(d,"shift")) return KEY_shift;
4144 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4145 if (strEQ(d,"shmget")) return -KEY_shmget;
4148 if (strEQ(d,"shmread")) return -KEY_shmread;
4151 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4152 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4157 if (strEQ(d,"sin")) return -KEY_sin;
4160 if (strEQ(d,"sleep")) return -KEY_sleep;
4163 if (strEQ(d,"sort")) return KEY_sort;
4164 if (strEQ(d,"socket")) return -KEY_socket;
4165 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4168 if (strEQ(d,"split")) return KEY_split;
4169 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4170 if (strEQ(d,"splice")) return KEY_splice;
4173 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4176 if (strEQ(d,"srand")) return -KEY_srand;
4179 if (strEQ(d,"stat")) return -KEY_stat;
4180 if (strEQ(d,"study")) return KEY_study;
4183 if (strEQ(d,"substr")) return -KEY_substr;
4184 if (strEQ(d,"sub")) return KEY_sub;
4189 if (strEQ(d,"system")) return -KEY_system;
4192 if (strEQ(d,"symlink")) return -KEY_symlink;
4193 if (strEQ(d,"syscall")) return -KEY_syscall;
4194 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4195 if (strEQ(d,"sysread")) return -KEY_sysread;
4196 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4199 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4208 if (strEQ(d,"tr")) return KEY_tr;
4211 if (strEQ(d,"tie")) return KEY_tie;
4214 if (strEQ(d,"tell")) return -KEY_tell;
4215 if (strEQ(d,"tied")) return KEY_tied;
4216 if (strEQ(d,"time")) return -KEY_time;
4219 if (strEQ(d,"times")) return -KEY_times;
4222 if (strEQ(d,"telldir")) return -KEY_telldir;
4225 if (strEQ(d,"truncate")) return -KEY_truncate;
4232 if (strEQ(d,"uc")) return -KEY_uc;
4235 if (strEQ(d,"use")) return KEY_use;
4238 if (strEQ(d,"undef")) return KEY_undef;
4239 if (strEQ(d,"until")) return KEY_until;
4240 if (strEQ(d,"untie")) return KEY_untie;
4241 if (strEQ(d,"utime")) return -KEY_utime;
4242 if (strEQ(d,"umask")) return -KEY_umask;
4245 if (strEQ(d,"unless")) return KEY_unless;
4246 if (strEQ(d,"unpack")) return -KEY_unpack;
4247 if (strEQ(d,"unlink")) return -KEY_unlink;
4250 if (strEQ(d,"unshift")) return KEY_unshift;
4251 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4256 if (strEQ(d,"values")) return -KEY_values;
4257 if (strEQ(d,"vec")) return -KEY_vec;
4262 if (strEQ(d,"warn")) return -KEY_warn;
4263 if (strEQ(d,"wait")) return -KEY_wait;
4266 if (strEQ(d,"while")) return KEY_while;
4267 if (strEQ(d,"write")) return -KEY_write;
4270 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4273 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4278 if (len == 1) return -KEY_x;
4279 if (strEQ(d,"xor")) return -KEY_xor;
4282 if (len == 1) return KEY_y;
4291 checkcomma(s,name,what)
4298 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4300 for (w = s+2; *w && level; w++) {
4307 for (; *w && isSPACE(*w); w++) ;
4308 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4309 warn("%s (...) interpreted as function",name);
4311 while (s < bufend && isSPACE(*s))
4315 while (s < bufend && isSPACE(*s))
4317 if (isIDFIRST(*s)) {
4321 while (s < bufend && isSPACE(*s))
4326 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4330 croak("No comma allowed after %s", what);
4336 scan_word(s, dest, destlen, allow_package, slp)
4343 register char *d = dest;
4344 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4350 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4355 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4368 scan_ident(s, send, dest, destlen, ck_uni)
4370 register char *send;
4380 if (lex_brackets == 0)
4385 e = d + destlen - 3; /* two-character token, ending NUL */
4387 while (isDIGIT(*s)) {
4399 else if (*s == '\'' && isIDFIRST(s[1])) {
4404 else if (*s == ':' && s[1] == ':') {
4415 if (lex_state != LEX_NORMAL)
4416 lex_state = LEX_INTERPENDMAYBE;
4419 if (*s == '$' && s[1] &&
4420 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4422 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4423 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4436 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4441 if (isSPACE(s[-1])) {
4444 if (ch != ' ' && ch != '\t') {
4450 if (isIDFIRST(*d)) {
4452 while (isALNUM(*s) || *s == ':')
4455 while (s < send && (*s == ' ' || *s == '\t')) s++;
4456 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4457 if (dowarn && keyword(dest, d - dest)) {
4458 char *brack = *s == '[' ? "[...]" : "{...}";
4459 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4460 funny, dest, brack, funny, dest, brack);
4462 lex_fakebrack = lex_brackets+1;
4464 lex_brackstack[lex_brackets++] = XOPERATOR;
4470 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4471 lex_state = LEX_INTERPEND;
4475 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4476 warn("Ambiguous use of %c{%s} resolved to %c%s",
4477 funny, dest, funny, dest);
4480 s = bracket; /* let the parser handle it */
4484 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4485 lex_state = LEX_INTERPEND;
4489 void pmflag(pmfl,ch)
4496 *pmfl |= PMf_GLOBAL;
4500 *pmfl |= PMf_MULTILINE;
4502 *pmfl |= PMf_SINGLELINE;
4504 *pmfl |= PMf_EXTENDED;
4514 s = scan_str(start);
4517 SvREFCNT_dec(lex_stuff);
4519 croak("Search pattern not terminated");
4522 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4523 if (multi_open == '?')
4524 pm->op_pmflags |= PMf_ONCE;
4525 while (*s && strchr("iogmsx", *s))
4526 pmflag(&pm->op_pmflags,*s++);
4527 pm->op_pmpermflags = pm->op_pmflags;
4530 yylval.ival = OP_MATCH;
4543 yylval.ival = OP_NULL;
4545 s = scan_str(start);
4549 SvREFCNT_dec(lex_stuff);
4551 croak("Substitution pattern not terminated");
4554 if (s[-1] == multi_open)
4557 first_start = multi_start;
4561 SvREFCNT_dec(lex_stuff);
4564 SvREFCNT_dec(lex_repl);
4566 croak("Substitution replacement not terminated");
4568 multi_start = first_start; /* so whole substitution is taken together */
4570 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4571 while (*s && strchr("iogmsex", *s)) {
4577 pmflag(&pm->op_pmflags,*s++);
4582 pm->op_pmflags |= PMf_EVAL;
4583 repl = newSVpv("",0);
4585 sv_catpv(repl, es ? "eval " : "do ");
4586 sv_catpvn(repl, "{ ", 2);
4587 sv_catsv(repl, lex_repl);
4588 sv_catpvn(repl, " };", 2);
4589 SvCOMPILED_on(repl);
4590 SvREFCNT_dec(lex_repl);
4594 pm->op_pmpermflags = pm->op_pmflags;
4596 yylval.ival = OP_SUBST;
4604 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4605 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4607 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4608 pm->op_pmflags |= PMf_SCANFIRST;
4609 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4610 pm->op_pmslen = SvCUR(pm->op_pmshort);
4612 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4613 if (pm->op_pmshort &&
4614 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4616 if (pm->op_pmflags & PMf_SCANFIRST) {
4617 SvREFCNT_dec(pm->op_pmshort);
4618 pm->op_pmshort = Nullsv;
4621 SvREFCNT_dec(pm->op_pmregexp->regmust);
4622 pm->op_pmregexp->regmust = Nullsv;
4626 /* promote the better string */
4627 if ((!pm->op_pmshort &&
4628 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4629 ((pm->op_pmflags & PMf_SCANFIRST) &&
4630 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4631 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4632 pm->op_pmshort = pm->op_pmregexp->regmust;
4633 pm->op_pmslen = SvCUR(pm->op_pmshort);
4634 pm->op_pmregexp->regmust = Nullsv;
4635 pm->op_pmflags |= PMf_SCANFIRST;
4651 yylval.ival = OP_NULL;
4653 s = scan_str(start);
4656 SvREFCNT_dec(lex_stuff);
4658 croak("Translation pattern not terminated");
4660 if (s[-1] == multi_open)
4666 SvREFCNT_dec(lex_stuff);
4669 SvREFCNT_dec(lex_repl);
4671 croak("Translation replacement not terminated");
4674 New(803,tbl,256,short);
4675 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4677 complement = delete = squash = 0;
4678 while (*s == 'c' || *s == 'd' || *s == 's') {
4680 complement = OPpTRANS_COMPLEMENT;
4682 delete = OPpTRANS_DELETE;
4684 squash = OPpTRANS_SQUASH;
4687 op->op_private = delete|squash|complement;
4690 yylval.ival = OP_TRANS;
4699 I32 op_type = OP_SCALAR;
4705 int outer = (rsfp && !lex_inwhat);
4711 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4712 if (*peek && strchr("`'\"",*peek)) {
4715 s = cpytill(d,s,bufend,term,&len);
4726 deprecate("bare << to mean <<\"\"");
4729 } /* assuming tokenbuf won't clobber */
4734 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4735 herewas = newSVpv(s,bufend-s);
4737 s--, herewas = newSVpv(s,d-s);
4738 s += SvCUR(herewas);
4740 tmpstr = NEWSV(87,80);
4741 sv_upgrade(tmpstr, SVt_PVIV);
4746 else if (term == '`') {
4747 op_type = OP_BACKTICK;
4748 SvIVX(tmpstr) = '\\';
4752 multi_start = curcop->cop_line;
4753 multi_open = multi_close = '<';
4757 while (s < bufend &&
4758 (*s != term || memNE(s,tokenbuf,len)) ) {
4763 curcop->cop_line = multi_start;
4764 missingterm(tokenbuf);
4766 sv_setpvn(tmpstr,d+1,s-d);
4768 sv_catpvn(herewas,s,bufend-s);
4769 sv_setsv(linestr,herewas);
4770 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4771 bufend = SvPVX(linestr) + SvCUR(linestr);
4774 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4775 while (s >= bufend) { /* multiple line string? */
4777 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4778 curcop->cop_line = multi_start;
4779 missingterm(tokenbuf);
4782 if (perldb && curstash != debstash) {
4783 SV *sv = NEWSV(88,0);
4785 sv_upgrade(sv, SVt_PVMG);
4786 sv_setsv(sv,linestr);
4787 av_store(GvAV(curcop->cop_filegv),
4788 (I32)curcop->cop_line,sv);
4790 bufend = SvPVX(linestr) + SvCUR(linestr);
4791 if (*s == term && memEQ(s,tokenbuf,len)) {
4794 sv_catsv(linestr,herewas);
4795 bufend = SvPVX(linestr) + SvCUR(linestr);
4799 sv_catsv(tmpstr,linestr);
4802 multi_end = curcop->cop_line;
4804 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4805 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4806 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4808 SvREFCNT_dec(herewas);
4810 yylval.ival = op_type;
4815 scan_inputsymbol(start)
4818 register char *s = start;
4823 s = cpytill(d, s+1, bufend, '>', &len);
4827 croak("Unterminated <> operator");
4829 if (*d == '$' && d[1]) d++;
4830 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4832 if (d - tokenbuf != len) {
4833 yylval.ival = OP_GLOB;
4835 s = scan_str(start);
4837 croak("Glob not terminated");
4843 (void)strcpy(d,"ARGV");
4846 if (tmp = pad_findmy(d)) {
4847 OP *op = newOP(OP_PADSV, 0);
4849 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4852 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4853 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4854 newUNOP(OP_RV2GV, 0,
4855 newUNOP(OP_RV2SV, 0,
4856 newGVOP(OP_GV, 0, gv))));
4858 yylval.ival = OP_NULL;
4861 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4862 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4863 yylval.ival = OP_NULL;
4875 register char *s = start;
4884 multi_start = curcop->cop_line;
4886 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4891 sv_upgrade(sv, SVt_PVIV);
4893 (void)SvPOK_only(sv); /* validate pointer */
4896 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4897 to = SvPVX(sv)+SvCUR(sv);
4898 if (multi_open == multi_close) {
4899 for (; s < bufend; s++,to++) {
4900 if (*s == '\n' && !rsfp)
4902 if (*s == '\\' && s+1 < bufend && term != '\\') {
4908 else if (*s == term)
4914 for (; s < bufend; s++,to++) {
4915 if (*s == '\n' && !rsfp)
4917 if (*s == '\\' && s+1 < bufend && term != '\\') {
4923 else if (*s == term && --brackets <= 0)
4925 else if (*s == multi_open)
4931 SvCUR_set(sv, to - SvPVX(sv));
4933 if (s < bufend) break; /* string ends on this line? */
4936 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4938 curcop->cop_line = multi_start;
4942 if (perldb && curstash != debstash) {
4943 SV *sv = NEWSV(88,0);
4945 sv_upgrade(sv, SVt_PVMG);
4946 sv_setsv(sv,linestr);
4947 av_store(GvAV(curcop->cop_filegv),
4948 (I32)curcop->cop_line, sv);
4950 bufend = SvPVX(linestr) + SvCUR(linestr);
4952 multi_end = curcop->cop_line;
4954 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4955 SvLEN_set(sv, SvCUR(sv) + 1);
4956 Renew(SvPVX(sv), SvLEN(sv), char);
4969 register char *s = start;
4979 croak("panic: scan_num");
4984 bool overflowed = FALSE;
4990 else if (s[1] == '.')
5006 yyerror("Illegal octal digit");
5008 case '0': case '1': case '2': case '3': case '4':
5009 case '5': case '6': case '7':
5012 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5013 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5019 if (!overflowed && (n >> shift) != u) {
5020 warn("Integer overflow in %s number",
5021 (shift == 4) ? "hex" : "octal");
5033 case '1': case '2': case '3': case '4': case '5':
5034 case '6': case '7': case '8': case '9': case '.':
5038 while (isDIGIT(*s) || *s == '_') {
5040 if (dowarn && lastub && s - lastub != 3)
5041 warn("Misplaced _ in number");
5047 if (dowarn && lastub && s - lastub != 3)
5048 warn("Misplaced _ in number");
5049 if (*s == '.' && s[1] != '.') {
5052 while (isDIGIT(*s) || *s == '_') {
5059 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5062 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5063 if (*s == '+' || *s == '-')
5070 SET_NUMERIC_STANDARD();
5071 value = atof(tokenbuf);
5073 if (!floatit && (double)tryiv == value)
5074 sv_setiv(sv, tryiv);
5076 sv_setnv(sv, value);
5080 yylval.opval = newSVOP(OP_CONST, 0, sv);
5091 SV *stuff = newSVpv("",0);
5092 bool needargs = FALSE;
5095 if (*s == '.' || *s == '}') {
5097 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5101 if (in_eval && !rsfp) {
5102 eol = strchr(s,'\n');
5107 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5109 for (t = s; t < eol; t++) {
5110 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5112 goto enough; /* ~~ must be first line in formline */
5114 if (*t == '@' || *t == '^')
5117 sv_catpvn(stuff, s, eol-s);
5121 s = filter_gets(linestr, rsfp, 0);
5122 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5123 bufend = bufptr + SvCUR(linestr);
5126 yyerror("Format not terminated");
5136 lex_state = LEX_NORMAL;
5137 nextval[nexttoke].ival = 0;
5141 lex_state = LEX_FORMLINE;
5142 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5144 nextval[nexttoke].ival = OP_FORMLINE;
5148 SvREFCNT_dec(stuff);
5160 cshlen = strlen(cshname);
5165 start_subparse(is_format, flags)
5169 I32 oldsavestack_ix = savestack_ix;
5170 CV* outsidecv = compcv;
5174 assert(SvTYPE(compcv) == SVt_PVCV);
5181 SAVESPTR(comppad_name);
5183 SAVEI32(comppad_name_fill);
5184 SAVEI32(min_intro_pending);
5185 SAVEI32(max_intro_pending);
5186 SAVEI32(pad_reset_pending);
5188 compcv = (CV*)NEWSV(1104,0);
5189 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5190 CvFLAGS(compcv) |= flags;
5193 comppad_name = newAV();
5194 comppad_name_fill = 0;
5195 min_intro_pending = 0;
5196 av_push(comppad, Nullsv);
5197 curpad = AvARRAY(comppad);
5199 subline = curcop->cop_line;
5201 comppadlist = newAV();
5202 AvREAL_off(comppadlist);
5203 av_store(comppadlist, 0, (SV*)comppad_name);
5204 av_store(comppadlist, 1, (SV*)comppad);
5206 CvPADLIST(compcv) = comppadlist;
5207 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5209 return oldsavestack_ix;
5229 char *context = NULL;
5232 if (!yychar || (yychar == ';' && !rsfp))
5234 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5235 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5236 while (isSPACE(*oldoldbufptr))
5238 context = oldoldbufptr;
5239 contlen = bufptr - oldoldbufptr;
5241 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5242 oldbufptr != bufptr) {
5243 while (isSPACE(*oldbufptr))
5245 context = oldbufptr;
5246 contlen = bufptr - oldbufptr;
5248 else if (yychar > 255)
5249 where = "next token ???";
5250 else if ((yychar & 127) == 127) {
5251 if (lex_state == LEX_NORMAL ||
5252 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5253 where = "at end of line";
5255 where = "within pattern";
5257 where = "within string";
5259 else if (yychar < 32)
5260 (void)sprintf(where = wbuf, "next char ^%c", toCTRL(yychar));
5261 else if (isPRINT_LC(yychar))
5262 (void)sprintf(where = wbuf, "next char %c", yychar);
5264 (void)sprintf(where = wbuf, "next char \\%03o", yychar & 255);
5266 contlen = strlen(where);
5267 (void)sprintf(buf, "%s at %s line %d, ",
5268 s, SvPVX(GvSV(curcop->cop_filegv)), curcop->cop_line);
5270 (void)sprintf(buf+strlen(buf), "near \"%.*s\"\n", contlen, context);
5272 (void)sprintf(buf+strlen(buf), "%s\n", where);
5273 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5274 sprintf(buf+strlen(buf),
5275 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5276 (int)multi_open,(int)multi_close,(long)multi_start);
5282 sv_catpv(GvSV(errgv),buf);
5284 PerlIO_printf(PerlIO_stderr(), "%s",buf);
5285 if (++error_count >= 10)
5286 croak("%s has too many errors.\n",
5287 SvPVX(GvSV(curcop->cop_filegv)));