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);
168 yywarn(form("%s found where operator expected", what));
170 warn("\t(Missing semicolon on previous line?)\n");
171 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
173 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
174 if (t < bufptr && isSPACE(*t))
175 warn("\t(Do you need to predeclare %.*s?)\n",
176 t - oldoldbufptr, oldoldbufptr);
180 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
191 char *nl = strrchr(s,'\n');
195 else if (multi_close < 32 || multi_close == 127) {
197 tmpbuf[1] = toCTRL(multi_close);
203 *tmpbuf = multi_close;
207 q = strchr(s,'"') ? '\'' : '"';
208 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
216 warn("Use of %s is deprecated", s);
222 deprecate("comma-less variable list");
233 SAVEI32(lex_brackets);
234 SAVEI32(lex_fakebrack);
235 SAVEI32(lex_casemods);
240 SAVEI16(curcop->cop_line);
244 SAVEPPTR(oldoldbufptr);
247 SAVEPPTR(lex_brackstack);
248 SAVEPPTR(lex_casestack);
249 SAVEDESTRUCTOR(restore_rsfp, rsfp);
251 lex_state = LEX_NORMAL;
256 New(899, lex_brackstack, 120, char);
257 New(899, lex_casestack, 12, char);
258 SAVEFREEPV(lex_brackstack);
259 SAVEFREEPV(lex_casestack);
261 *lex_casestack = '\0';
265 SvREFCNT_dec(lex_stuff);
268 SvREFCNT_dec(lex_repl);
273 if (SvREADONLY(linestr))
274 linestr = sv_2mortal(newSVsv(linestr));
275 s = SvPV(linestr, len);
276 if (len && s[len-1] != ';') {
277 if (!(SvFLAGS(linestr) & SVs_TEMP))
278 linestr = sv_2mortal(newSVsv(linestr));
279 sv_catpvn(linestr, "\n;", 2);
282 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
283 bufend = bufptr + SvCUR(linestr);
285 rs = newSVpv("\n", 1);
299 PerlIO *fp = (PerlIO*)f;
301 if (rsfp == PerlIO_stdin())
302 PerlIO_clearerr(rsfp);
303 else if (rsfp && (rsfp != fp))
320 while (*s == ' ' || *s == '\t') s++;
321 if (strnEQ(s, "line ", 5)) {
330 while (*s == ' ' || *s == '\t')
332 if (*s == '"' && (t = strchr(s+1, '"')))
336 return; /* false alarm */
337 for (t = s; !isSPACE(*t); t++) ;
342 curcop->cop_filegv = gv_fetchfile(s);
344 curcop->cop_filegv = gv_fetchfile(origfilename);
346 curcop->cop_line = atoi(n)-1;
353 if (lex_formbrack && lex_brackets <= lex_formbrack) {
354 while (s < bufend && (*s == ' ' || *s == '\t'))
360 while (s < bufend && isSPACE(*s))
362 if (s < bufend && *s == '#') {
363 while (s < bufend && *s != '\n')
368 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
370 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
371 if (minus_n || minus_p) {
372 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
373 sv_catpv(linestr,";}");
374 minus_n = minus_p = 0;
377 sv_setpv(linestr,";");
378 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
379 bufend = SvPVX(linestr) + SvCUR(linestr);
380 if (preprocess && !in_eval)
381 (void)my_pclose(rsfp);
382 else if ((PerlIO*)rsfp == PerlIO_stdin())
383 PerlIO_clearerr(rsfp);
385 (void)PerlIO_close(rsfp);
389 linestart = bufptr = s + prevlen;
390 bufend = s + SvCUR(linestr);
393 if (perldb && curstash != debstash) {
394 SV *sv = NEWSV(85,0);
396 sv_upgrade(sv, SVt_PVMG);
397 sv_setpvn(sv,bufptr,bufend-bufptr);
398 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
409 if (oldoldbufptr != last_uni)
411 while (isSPACE(*last_uni))
413 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
414 if ((t = strchr(s, '(')) && t < bufptr)
418 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
425 #define UNI(f) return uni(f,s)
435 last_uni = oldbufptr;
446 #endif /* CRIPPLED_CC */
448 #define LOP(f,x) return lop(f,x,s)
453 (I32 f, expectation x, char *s)
459 #endif /* CAN_PROTOTYPE */
465 last_lop = oldbufptr;
482 nexttype[nexttoke] = type;
484 if (lex_state != LEX_KNOWNEXT) {
485 lex_defer = lex_state;
487 lex_state = LEX_KNOWNEXT;
492 force_word(start,token,check_keyword,allow_pack,allow_tick)
493 register char *start;
502 start = skipspace(start);
505 (allow_pack && *s == ':') ||
506 (allow_tick && *s == '\'') )
508 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
509 if (check_keyword && keyword(tokenbuf, len))
511 if (token == METHOD) {
521 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
522 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
534 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
535 nextval[nexttoke].opval = op;
538 op->op_private = OPpCONST_ENTERED;
539 /* XXX see note in pp_entereval() for why we forgo typo
540 warnings if the symbol must be introduced in an eval.
542 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
543 kind == '$' ? SVt_PV :
544 kind == '@' ? SVt_PVAV :
545 kind == '%' ? SVt_PVHV :
556 OP *version = Nullop;
560 /* default VERSION number -- GBARR */
565 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
566 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
568 /* real VERSION number -- GBARR */
569 version = yylval.opval;
573 /* NOTE: The parser sees the package name and the VERSION swapped */
574 nextval[nexttoke].opval = version;
592 s = SvPV_force(sv, len);
596 while (s < send && *s != '\\')
603 if (s + 1 < send && (s[1] == '\\'))
604 s++; /* all that, just for this */
609 SvCUR_set(sv, d - SvPVX(sv));
617 register I32 op_type = yylval.ival;
619 if (op_type == OP_NULL) {
620 yylval.opval = lex_op;
624 if (op_type == OP_CONST || op_type == OP_READLINE) {
625 SV *sv = q(lex_stuff);
627 char *p = SvPV(sv, len);
628 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
634 sublex_info.super_state = lex_state;
635 sublex_info.sub_inwhat = op_type;
636 sublex_info.sub_op = lex_op;
637 lex_state = LEX_INTERPPUSH;
641 yylval.opval = lex_op;
654 lex_state = sublex_info.super_state;
656 SAVEI32(lex_brackets);
657 SAVEI32(lex_fakebrack);
658 SAVEI32(lex_casemods);
663 SAVEI16(curcop->cop_line);
666 SAVEPPTR(oldoldbufptr);
669 SAVEPPTR(lex_brackstack);
670 SAVEPPTR(lex_casestack);
675 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
676 bufend += SvCUR(linestr);
682 New(899, lex_brackstack, 120, char);
683 New(899, lex_casestack, 12, char);
684 SAVEFREEPV(lex_brackstack);
685 SAVEFREEPV(lex_casestack);
687 *lex_casestack = '\0';
689 lex_state = LEX_INTERPCONCAT;
690 curcop->cop_line = multi_start;
692 lex_inwhat = sublex_info.sub_inwhat;
693 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
694 lex_inpat = sublex_info.sub_op;
706 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
710 if (lex_casemods) { /* oops, we've got some unbalanced parens */
711 lex_state = LEX_INTERPCASEMOD;
715 /* Is there a right-hand side to take care of? */
716 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
719 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
720 bufend += SvCUR(linestr);
726 *lex_casestack = '\0';
728 if (SvCOMPILED(lex_repl)) {
729 lex_state = LEX_INTERPNORMAL;
733 lex_state = LEX_INTERPCONCAT;
739 bufend = SvPVX(linestr);
740 bufend += SvCUR(linestr);
750 register char *send = bufend;
751 SV *sv = NEWSV(93, send - start);
752 register char *s = start;
753 register char *d = SvPVX(sv);
754 bool dorange = FALSE;
758 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
759 : (lex_inwhat & OP_TRANS)
763 while (s < send || dorange) {
764 if (lex_inwhat == OP_TRANS) {
769 SvGROW(sv, SvLEN(sv) + 256);
773 for (i = (U8)*d; i <= max; i++)
778 else if (*s == '-' && s+1 < send && s != start) {
783 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
784 while (s < send && *s != ')')
787 else if (*s == '#' && lex_inpat &&
788 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
789 while (s+1 < send && *s != '\n')
792 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
794 else if (*s == '$') {
795 if (!lex_inpat) /* not a regexp, so $ must be var */
797 if (s + 1 < send && !strchr(")| \n\t", s[1]))
798 break; /* in regexp, $ might be tail anchor */
800 if (*s == '\\' && s+1 < send) {
802 if (*s && strchr(leave, *s)) {
807 if (lex_inwhat == OP_SUBST && !lex_inpat &&
808 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
811 warn("\\%c better written as $%c", *s, *s);
815 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
821 if (lex_inwhat == OP_TRANS) {
829 case '0': case '1': case '2': case '3':
830 case '4': case '5': case '6': case '7':
831 *d++ = scan_oct(s, 3, &len);
835 *d++ = scan_hex(++s, 2, &len);
871 SvCUR_set(sv, d - SvPVX(sv));
874 if (SvCUR(sv) + 5 < SvLEN(sv)) {
875 SvLEN_set(sv, SvCUR(sv) + 1);
876 Renew(SvPVX(sv), SvLEN(sv), char);
879 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
885 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
892 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
894 if (*s != '{' && *s != '[')
899 /* In a pattern, so maybe we have {n,m}. */
916 /* On the other hand, maybe we have a character class */
919 if (*s == ']' || *s == '^')
922 int weight = 2; /* let's weigh the evidence */
924 unsigned char un_char = 0, last_un_char;
925 char *send = strchr(s,']');
926 char tmpbuf[sizeof tokenbuf * 4];
928 if (!send) /* has to be an expression */
934 else if (isDIGIT(*s)) {
936 if (isDIGIT(s[1]) && s[2] == ']')
942 for (; s < send; s++) {
943 last_un_char = un_char;
944 un_char = (unsigned char)*s;
949 weight -= seen[un_char] * 10;
951 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
952 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
957 else if (*s == '$' && s[1] &&
958 strchr("[#!%*<>()-=",s[1])) {
959 if (/*{*/ strchr("])} =",s[2]))
968 if (strchr("wds]",s[1]))
970 else if (seen['\''] || seen['"'])
972 else if (strchr("rnftbxcav",s[1]))
974 else if (isDIGIT(s[1])) {
976 while (s[1] && isDIGIT(s[1]))
986 if (strchr("aA01! ",last_un_char))
988 if (strchr("zZ79~",s[1]))
992 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
993 isALPHA(*s) && s[1] && isALPHA(s[1])) {
998 if (keyword(tmpbuf, d - tmpbuf))
1001 if (un_char == last_un_char + 1)
1003 weight -= seen[un_char];
1008 if (weight >= 0) /* probably a character class */
1016 intuit_method(start,gv)
1020 char *s = start + (*start == '$');
1021 char tmpbuf[sizeof tokenbuf];
1031 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1032 if (*start == '$') {
1033 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1038 return *s == '(' ? FUNCMETH : METHOD;
1040 if (!keyword(tmpbuf, len)) {
1041 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1042 if (indirgv && GvCVu(indirgv))
1044 /* filehandle or package name makes it a method */
1045 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1047 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1048 return 0; /* no assumptions -- "=>" quotes bearword */
1049 nextval[nexttoke].opval =
1050 (OP*)newSVOP(OP_CONST, 0,
1052 nextval[nexttoke].opval->op_private =
1057 return *s == '(' ? FUNCMETH : METHOD;
1067 char *pdb = getenv("PERL5DB");
1071 return "BEGIN { require 'perl5db.pl' }";
1077 /* Encoded script support. filter_add() effectively inserts a
1078 * 'pre-processing' function into the current source input stream.
1079 * Note that the filter function only applies to the current source file
1080 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1082 * The datasv parameter (which may be NULL) can be used to pass
1083 * private data to this instance of the filter. The filter function
1084 * can recover the SV using the FILTER_DATA macro and use it to
1085 * store private buffers and state information.
1087 * The supplied datasv parameter is upgraded to a PVIO type
1088 * and the IoDIRP field is used to store the function pointer.
1089 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1090 * private use must be set using malloc'd pointers.
1092 static int filter_debug = 0;
1095 filter_add(funcp, datasv)
1099 if (!funcp){ /* temporary handy debugging hack to be deleted */
1100 filter_debug = atoi((char*)datasv);
1104 rsfp_filters = newAV();
1107 if (!SvUPGRADE(datasv, SVt_PVIO))
1108 die("Can't upgrade filter_add data to SVt_PVIO");
1109 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1111 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1112 av_unshift(rsfp_filters, 1);
1113 av_store(rsfp_filters, 0, datasv) ;
1118 /* Delete most recently added instance of this filter function. */
1124 warn("filter_del func %p", funcp);
1125 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1127 /* if filter is on top of stack (usual case) just pop it off */
1128 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1129 /* sv_free(av_pop(rsfp_filters)); */
1130 sv_free(av_shift(rsfp_filters));
1134 /* we need to search for the correct entry and clear it */
1135 die("filter_del can only delete in reverse order (currently)");
1139 /* Invoke the n'th filter function for the current rsfp. */
1141 filter_read(idx, buf_sv, maxlen)
1144 int maxlen; /* 0 = read one text line */
1151 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1152 /* Provide a default input filter to make life easy. */
1153 /* Note that we append to the line. This is handy. */
1155 warn("filter_read %d: from rsfp\n", idx);
1159 int old_len = SvCUR(buf_sv) ;
1161 /* ensure buf_sv is large enough */
1162 SvGROW(buf_sv, old_len + maxlen) ;
1163 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1164 if (PerlIO_error(rsfp))
1165 return -1; /* error */
1167 return 0 ; /* end of file */
1169 SvCUR_set(buf_sv, old_len + len) ;
1172 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1173 if (PerlIO_error(rsfp))
1174 return -1; /* error */
1176 return 0 ; /* end of file */
1179 return SvCUR(buf_sv);
1181 /* Skip this filter slot if filter has been deleted */
1182 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1184 warn("filter_read %d: skipped (filter deleted)\n", idx);
1185 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1187 /* Get function pointer hidden within datasv */
1188 funcp = (filter_t)IoDIRP(datasv);
1190 warn("filter_read %d: via function %p (%s)\n",
1191 idx, funcp, SvPV(datasv,na));
1192 /* Call function. The function is expected to */
1193 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1194 /* Return: <0:error, =0:eof, >0:not eof */
1195 return (*funcp)(idx, buf_sv, maxlen);
1199 filter_gets(sv,fp, append)
1201 register PerlIO *fp;
1207 SvCUR_set(sv, 0); /* start with empty line */
1208 if (FILTER_READ(0, sv, 0) > 0)
1209 return ( SvPVX(sv) ) ;
1214 return (sv_gets(sv, fp, append));
1220 static char* exp_name[] =
1221 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1224 EXT int yychar; /* last token */
1234 if (pending_ident) {
1235 char pit = pending_ident;
1239 if (strchr(tokenbuf,':'))
1240 croak(no_myglob,tokenbuf);
1241 yylval.opval = newOP(OP_PADANY, 0);
1242 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1246 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1247 if (last_lop_op == OP_SORT &&
1248 tokenbuf[0] == '$' &&
1249 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1252 for (d = in_eval ? oldoldbufptr : linestart;
1253 d < bufend && *d != '\n';
1256 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1257 croak("Can't use \"my %s\" in sort comparison",
1263 yylval.opval = newOP(OP_PADANY, 0);
1264 yylval.opval->op_targ = tmp;
1268 /* Force them to make up their mind on "@foo". */
1269 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1270 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1271 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1272 yyerror(form("In string, %s now must be written as \\%s",
1273 tokenbuf, tokenbuf));
1276 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1277 yylval.opval->op_private = OPpCONST_ENTERED;
1278 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1279 ((tokenbuf[0] == '$') ? SVt_PV
1280 : (tokenbuf[0] == '@') ? SVt_PVAV
1285 switch (lex_state) {
1287 case LEX_NORMAL: /* Some compilers will produce faster */
1288 case LEX_INTERPNORMAL: /* code if we comment these out. */
1294 yylval = nextval[nexttoke];
1296 lex_state = lex_defer;
1297 expect = lex_expect;
1298 lex_defer = LEX_NORMAL;
1300 return(nexttype[nexttoke]);
1302 case LEX_INTERPCASEMOD:
1304 if (bufptr != bufend && *bufptr != '\\')
1305 croak("panic: INTERPCASEMOD");
1307 if (bufptr == bufend || bufptr[1] == 'E') {
1310 oldmod = lex_casestack[--lex_casemods];
1311 lex_casestack[lex_casemods] = '\0';
1312 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1314 lex_state = LEX_INTERPCONCAT;
1318 if (bufptr != bufend)
1320 lex_state = LEX_INTERPCONCAT;
1325 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1326 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1327 if (strchr("LU", *s) &&
1328 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1330 lex_casestack[--lex_casemods] = '\0';
1333 if (lex_casemods > 10) {
1334 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1335 if (newlb != lex_casestack) {
1337 lex_casestack = newlb;
1340 lex_casestack[lex_casemods++] = *s;
1341 lex_casestack[lex_casemods] = '\0';
1342 lex_state = LEX_INTERPCONCAT;
1343 nextval[nexttoke].ival = 0;
1346 nextval[nexttoke].ival = OP_LCFIRST;
1348 nextval[nexttoke].ival = OP_UCFIRST;
1350 nextval[nexttoke].ival = OP_LC;
1352 nextval[nexttoke].ival = OP_UC;
1354 nextval[nexttoke].ival = OP_QUOTEMETA;
1356 croak("panic: yylex");
1368 case LEX_INTERPPUSH:
1369 return sublex_push();
1371 case LEX_INTERPSTART:
1372 if (bufptr == bufend)
1373 return sublex_done();
1375 lex_dojoin = (*bufptr == '@');
1376 lex_state = LEX_INTERPNORMAL;
1378 nextval[nexttoke].ival = 0;
1380 force_ident("\"", '$');
1381 nextval[nexttoke].ival = 0;
1383 nextval[nexttoke].ival = 0;
1385 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1394 case LEX_INTERPENDMAYBE:
1395 if (intuit_more(bufptr)) {
1396 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1404 lex_state = LEX_INTERPCONCAT;
1408 case LEX_INTERPCONCAT:
1411 croak("panic: INTERPCONCAT");
1413 if (bufptr == bufend)
1414 return sublex_done();
1416 if (SvIVX(linestr) == '\'') {
1417 SV *sv = newSVsv(linestr);
1420 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1424 s = scan_const(bufptr);
1426 lex_state = LEX_INTERPCASEMOD;
1428 lex_state = LEX_INTERPSTART;
1432 nextval[nexttoke] = yylval;
1445 lex_state = LEX_NORMAL;
1446 s = scan_formline(bufptr);
1453 oldoldbufptr = oldbufptr;
1456 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1462 croak("Unrecognized character \\%03o", *s & 255);
1465 goto fake_eof; /* emulate EOF on ^D or ^Z */
1471 yyerror("Missing right bracket");
1475 goto retry; /* ignore stray nulls */
1478 if (!in_eval && !preambled) {
1480 sv_setpv(linestr,incl_perldb());
1482 sv_catpv(linestr,";");
1484 while(AvFILL(preambleav) >= 0) {
1485 SV *tmpsv = av_shift(preambleav);
1486 sv_catsv(linestr, tmpsv);
1487 sv_catpv(linestr, ";");
1490 sv_free((SV*)preambleav);
1493 if (minus_n || minus_p) {
1494 sv_catpv(linestr, "LINE: while (<>) {");
1496 sv_catpv(linestr,"chomp;");
1498 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1500 GvIMPORTED_AV_on(gv);
1502 if (strchr("/'\"", *splitstr)
1503 && strchr(splitstr + 1, *splitstr))
1504 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1507 s = "'~#\200\1'"; /* surely one char is unused...*/
1508 while (s[1] && strchr(splitstr, *s)) s++;
1510 sv_catpvf(linestr, "@F=split(%s%c",
1511 "q" + (delim == '\''), delim);
1512 for (s = splitstr; *s; s++) {
1514 sv_catpvn(linestr, "\\", 1);
1515 sv_catpvn(linestr, s, 1);
1517 sv_catpvf(linestr, "%c);", delim);
1521 sv_catpv(linestr,"@F=split(' ');");
1524 sv_catpv(linestr, "\n");
1525 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1526 bufend = SvPVX(linestr) + SvCUR(linestr);
1527 if (perldb && curstash != debstash) {
1528 SV *sv = NEWSV(85,0);
1530 sv_upgrade(sv, SVt_PVMG);
1531 sv_setsv(sv,linestr);
1532 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1537 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1540 if (preprocess && !in_eval)
1541 (void)my_pclose(rsfp);
1542 else if ((PerlIO *)rsfp == PerlIO_stdin())
1543 PerlIO_clearerr(rsfp);
1545 (void)PerlIO_close(rsfp);
1548 if (!in_eval && (minus_n || minus_p)) {
1549 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1550 sv_catpv(linestr,";}");
1551 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1552 bufend = SvPVX(linestr) + SvCUR(linestr);
1553 minus_n = minus_p = 0;
1556 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1557 sv_setpv(linestr,"");
1558 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1561 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1564 /* Incest with pod. */
1565 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1566 sv_setpv(linestr, "");
1567 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1568 bufend = SvPVX(linestr) + SvCUR(linestr);
1573 } while (doextract);
1574 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1575 if (perldb && curstash != debstash) {
1576 SV *sv = NEWSV(85,0);
1578 sv_upgrade(sv, SVt_PVMG);
1579 sv_setsv(sv,linestr);
1580 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1582 bufend = SvPVX(linestr) + SvCUR(linestr);
1583 if (curcop->cop_line == 1) {
1584 while (s < bufend && isSPACE(*s))
1586 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1590 if (*s == '#' && *(s+1) == '!')
1592 #ifdef ALTERNATE_SHEBANG
1594 static char as[] = ALTERNATE_SHEBANG;
1595 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1596 d = s + (sizeof(as) - 1);
1598 #endif /* ALTERNATE_SHEBANG */
1607 while (*d && !isSPACE(*d))
1611 #ifdef ARG_ZERO_IS_SCRIPT
1612 if (ipathend > ipath) {
1614 * HP-UX (at least) sets argv[0] to the script name,
1615 * which makes $^X incorrect. And Digital UNIX and Linux,
1616 * at least, set argv[0] to the basename of the Perl
1617 * interpreter. So, having found "#!", we'll set it right.
1619 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1620 assert(SvPOK(x) || SvGMAGICAL(x));
1621 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1622 sv_setpvn(x, ipath, ipathend - ipath);
1625 TAINT_NOT; /* $^X is always tainted, but that's OK */
1627 #endif /* ARG_ZERO_IS_SCRIPT */
1632 d = instr(s,"perl -");
1634 d = instr(s,"perl");
1635 #ifdef ALTERNATE_SHEBANG
1637 * If the ALTERNATE_SHEBANG on this system starts with a
1638 * character that can be part of a Perl expression, then if
1639 * we see it but not "perl", we're probably looking at the
1640 * start of Perl code, not a request to hand off to some
1641 * other interpreter. Similarly, if "perl" is there, but
1642 * not in the first 'word' of the line, we assume the line
1643 * contains the start of the Perl program.
1645 if (d && *s != '#') {
1647 while (*c && !strchr("; \t\r\n\f\v#", *c))
1650 d = Nullch; /* "perl" not in first word; ignore */
1652 *s = '#'; /* Don't try to parse shebang line */
1654 #endif /* ALTERNATE_SHEBANG */
1659 !instr(s,"indir") &&
1660 instr(origargv[0],"perl"))
1666 while (s < bufend && isSPACE(*s))
1669 Newz(899,newargv,origargc+3,char*);
1671 while (s < bufend && !isSPACE(*s))
1674 Copy(origargv+1, newargv+2, origargc+1, char*);
1679 execv(ipath, newargv);
1680 croak("Can't exec %s", ipath);
1683 U32 oldpdb = perldb;
1684 bool oldn = minus_n;
1685 bool oldp = minus_p;
1687 while (*d && !isSPACE(*d)) d++;
1688 while (*d == ' ' || *d == '\t') d++;
1692 if (*d == 'M' || *d == 'm') {
1694 while (*d && !isSPACE(*d)) d++;
1695 croak("Too late for \"-%.*s\" option",
1698 d = moreswitches(d);
1700 if (perldb && !oldpdb ||
1701 ( minus_n || minus_p ) && !(oldn || oldp) )
1702 /* if we have already added "LINE: while (<>) {",
1703 we must not do it again */
1705 sv_setpv(linestr, "");
1706 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1707 bufend = SvPVX(linestr) + SvCUR(linestr);
1710 (void)gv_fetchfile(origfilename);
1717 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1719 lex_state = LEX_FORMLINE;
1724 warn("Illegal character \\%03o (carriage return)", '\r');
1726 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1727 case ' ': case '\t': case '\f': case 013:
1732 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1734 while (s < d && *s != '\n')
1739 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1741 lex_state = LEX_FORMLINE;
1751 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1756 while (s < bufend && (*s == ' ' || *s == '\t'))
1759 if (strnEQ(s,"=>",2)) {
1761 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1762 (int)tmp, (int)tmp);
1763 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1764 OPERATOR('-'); /* unary minus */
1766 last_uni = oldbufptr;
1767 last_lop_op = OP_FTEREAD; /* good enough */
1769 case 'r': FTST(OP_FTEREAD);
1770 case 'w': FTST(OP_FTEWRITE);
1771 case 'x': FTST(OP_FTEEXEC);
1772 case 'o': FTST(OP_FTEOWNED);
1773 case 'R': FTST(OP_FTRREAD);
1774 case 'W': FTST(OP_FTRWRITE);
1775 case 'X': FTST(OP_FTREXEC);
1776 case 'O': FTST(OP_FTROWNED);
1777 case 'e': FTST(OP_FTIS);
1778 case 'z': FTST(OP_FTZERO);
1779 case 's': FTST(OP_FTSIZE);
1780 case 'f': FTST(OP_FTFILE);
1781 case 'd': FTST(OP_FTDIR);
1782 case 'l': FTST(OP_FTLINK);
1783 case 'p': FTST(OP_FTPIPE);
1784 case 'S': FTST(OP_FTSOCK);
1785 case 'u': FTST(OP_FTSUID);
1786 case 'g': FTST(OP_FTSGID);
1787 case 'k': FTST(OP_FTSVTX);
1788 case 'b': FTST(OP_FTBLK);
1789 case 'c': FTST(OP_FTCHR);
1790 case 't': FTST(OP_FTTTY);
1791 case 'T': FTST(OP_FTTEXT);
1792 case 'B': FTST(OP_FTBINARY);
1793 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1794 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1795 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1797 croak("Unrecognized file test: -%c", (int)tmp);
1804 if (expect == XOPERATOR)
1809 else if (*s == '>') {
1812 if (isIDFIRST(*s)) {
1813 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1821 if (expect == XOPERATOR)
1824 if (isSPACE(*s) || !isSPACE(*bufptr))
1826 OPERATOR('-'); /* unary minus */
1833 if (expect == XOPERATOR)
1838 if (expect == XOPERATOR)
1841 if (isSPACE(*s) || !isSPACE(*bufptr))
1847 if (expect != XOPERATOR) {
1848 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1850 force_ident(tokenbuf, '*');
1863 if (expect == XOPERATOR) {
1868 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1871 yyerror("Final % should be \\% or %name");
1874 pending_ident = '%';
1896 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1897 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1902 if (curcop->cop_line < copline)
1903 copline = curcop->cop_line;
1914 if (lex_brackets <= 0)
1915 yyerror("Unmatched right bracket");
1918 if (lex_state == LEX_INTERPNORMAL) {
1919 if (lex_brackets == 0) {
1920 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1921 lex_state = LEX_INTERPEND;
1928 if (lex_brackets > 100) {
1929 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1930 if (newlb != lex_brackstack) {
1932 lex_brackstack = newlb;
1937 if (lex_formbrack) {
1941 if (oldoldbufptr == last_lop)
1942 lex_brackstack[lex_brackets++] = XTERM;
1944 lex_brackstack[lex_brackets++] = XOPERATOR;
1945 OPERATOR(HASHBRACK);
1947 while (s < bufend && (*s == ' ' || *s == '\t'))
1951 if (d < bufend && *d == '-') {
1954 while (d < bufend && (*d == ' ' || *d == '\t'))
1957 if (d < bufend && isIDFIRST(*d)) {
1958 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1960 while (d < bufend && (*d == ' ' || *d == '\t'))
1963 char minus = (tokenbuf[0] == '-');
1965 (keyword(tokenbuf + 1, len) ||
1966 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1967 perl_get_cv(tokenbuf + 1, FALSE) ))
1968 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1969 tokenbuf + !minus, tokenbuf + !minus);
1970 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1977 lex_brackstack[lex_brackets++] = XSTATE;
1981 lex_brackstack[lex_brackets++] = XOPERATOR;
1986 if (oldoldbufptr == last_lop)
1987 lex_brackstack[lex_brackets++] = XTERM;
1989 lex_brackstack[lex_brackets++] = XOPERATOR;
1992 OPERATOR(HASHBRACK);
1994 for (t = s; t < bufend && isALNUM(*t); t++) ;
1996 else if (*s == '\'' || *s == '"') {
2003 while (t < bufend && isSPACE(*t))
2005 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2006 OPERATOR(HASHBRACK);
2010 lex_brackstack[lex_brackets-1] = XSTATE;
2016 yylval.ival = curcop->cop_line;
2017 if (isSPACE(*s) || *s == '#')
2018 copline = NOLINE; /* invalidate current command line number */
2023 if (lex_brackets <= 0)
2024 yyerror("Unmatched right bracket");
2026 expect = (expectation)lex_brackstack[--lex_brackets];
2027 if (lex_brackets < lex_formbrack)
2029 if (lex_state == LEX_INTERPNORMAL) {
2030 if (lex_brackets == 0) {
2031 if (lex_fakebrack) {
2032 lex_state = LEX_INTERPEND;
2034 return yylex(); /* ignore fake brackets */
2036 if (*s == '-' && s[1] == '>')
2037 lex_state = LEX_INTERPENDMAYBE;
2038 else if (*s != '[' && *s != '{')
2039 lex_state = LEX_INTERPEND;
2042 if (lex_brackets < lex_fakebrack) {
2045 return yylex(); /* ignore fake brackets */
2055 if (expect == XOPERATOR) {
2056 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2064 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2067 force_ident(tokenbuf, '&');
2071 yylval.ival = (OPpENTERSUB_AMPER<<8);
2090 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2091 warn("Reversed %c= operator",(int)tmp);
2093 if (expect == XSTATE && isALPHA(tmp) &&
2094 (s == linestart+1 || s[-2] == '\n') )
2096 if (in_eval && !rsfp) {
2101 if (strnEQ(s,"=cut",4)) {
2118 if (lex_brackets < lex_formbrack) {
2120 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2121 if (*t == '\n' || *t == '#') {
2139 if (expect != XOPERATOR) {
2140 if (s[1] != '<' && !strchr(s,'>'))
2143 s = scan_heredoc(s);
2145 s = scan_inputsymbol(s);
2146 TERM(sublex_start());
2151 SHop(OP_LEFT_SHIFT);
2165 SHop(OP_RIGHT_SHIFT);
2174 if (expect == XOPERATOR) {
2175 if (lex_formbrack && lex_brackets == lex_formbrack) {
2178 return ','; /* grandfather non-comma-format format */
2182 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2183 if (expect == XOPERATOR)
2184 no_op("Array length", bufptr);
2186 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2191 pending_ident = '#';
2195 if (expect == XOPERATOR)
2196 no_op("Scalar", bufptr);
2198 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2201 yyerror("Final $ should be \\$ or $name");
2205 /* This kludge not intended to be bulletproof. */
2206 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2207 yylval.opval = newSVOP(OP_CONST, 0,
2208 newSViv((IV)compiling.cop_arybase));
2209 yylval.opval->op_private = OPpCONST_ARYBASE;
2214 if (lex_state == LEX_NORMAL)
2217 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2223 isSPACE(*t) || isALNUM(*t) || *t == '$';
2226 bufptr = skipspace(bufptr);
2227 while (t < bufend && *t != ']')
2229 warn("Multidimensional syntax %.*s not supported",
2230 (t - bufptr) + 1, bufptr);
2234 else if (*s == '{') {
2236 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2237 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2239 char tmpbuf[sizeof tokenbuf];
2241 for (t++; isSPACE(*t); t++) ;
2242 if (isIDFIRST(*t)) {
2243 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2244 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2245 warn("You need to quote \"%s\"", tmpbuf);
2252 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2253 bool islop = (last_lop == oldoldbufptr);
2254 if (!islop || last_lop_op == OP_GREPSTART)
2256 else if (strchr("$@\"'`q", *s))
2257 expect = XTERM; /* e.g. print $fh "foo" */
2258 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2259 expect = XTERM; /* e.g. print $fh &sub */
2260 else if (isIDFIRST(*s)) {
2261 char tmpbuf[sizeof tokenbuf];
2262 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2263 if (keyword(tmpbuf, len))
2264 expect = XTERM; /* e.g. print $fh length() */
2266 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2267 if (gv && GvCVu(gv))
2268 expect = XTERM; /* e.g. print $fh subr() */
2271 else if (isDIGIT(*s))
2272 expect = XTERM; /* e.g. print $fh 3 */
2273 else if (*s == '.' && isDIGIT(s[1]))
2274 expect = XTERM; /* e.g. print $fh .3 */
2275 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2276 expect = XTERM; /* e.g. print $fh -1 */
2277 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2278 expect = XTERM; /* print $fh <<"EOF" */
2280 pending_ident = '$';
2284 if (expect == XOPERATOR)
2287 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2290 yyerror("Final @ should be \\@ or @name");
2293 if (lex_state == LEX_NORMAL)
2295 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2299 /* Warn about @ where they meant $. */
2301 if (*s == '[' || *s == '{') {
2303 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2305 if (*t == '}' || *t == ']') {
2307 bufptr = skipspace(bufptr);
2308 warn("Scalar value %.*s better written as $%.*s",
2309 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2314 pending_ident = '@';
2317 case '/': /* may either be division or pattern */
2318 case '?': /* may either be conditional or pattern */
2319 if (expect != XOPERATOR) {
2322 TERM(sublex_start());
2330 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2331 (s == linestart || s[-1] == '\n') ) {
2336 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2342 yylval.ival = OPf_SPECIAL;
2348 if (expect != XOPERATOR)
2353 case '0': case '1': case '2': case '3': case '4':
2354 case '5': case '6': case '7': case '8': case '9':
2356 if (expect == XOPERATOR)
2362 if (expect == XOPERATOR) {
2363 if (lex_formbrack && lex_brackets == lex_formbrack) {
2366 return ','; /* grandfather non-comma-format format */
2372 missingterm((char*)0);
2373 yylval.ival = OP_CONST;
2374 TERM(sublex_start());
2378 if (expect == XOPERATOR) {
2379 if (lex_formbrack && lex_brackets == lex_formbrack) {
2382 return ','; /* grandfather non-comma-format format */
2388 missingterm((char*)0);
2389 yylval.ival = OP_CONST;
2390 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2391 if (*d == '$' || *d == '@' || *d == '\\') {
2392 yylval.ival = OP_STRINGIFY;
2396 TERM(sublex_start());
2400 if (expect == XOPERATOR)
2401 no_op("Backticks",s);
2403 missingterm((char*)0);
2404 yylval.ival = OP_BACKTICK;
2406 TERM(sublex_start());
2410 if (dowarn && lex_inwhat && isDIGIT(*s))
2411 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2412 if (expect == XOPERATOR)
2413 no_op("Backslash",s);
2417 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2453 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2455 /* Some keywords can be followed by any delimiter, including ':' */
2456 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2457 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2458 (tokenbuf[0] == 'q' &&
2459 strchr("qwx", tokenbuf[1]))));
2461 /* x::* is just a word, unless x is "CORE" */
2462 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2466 while (d < bufend && isSPACE(*d))
2467 d++; /* no comments skipped here, or s### is misparsed */
2469 /* Is this a label? */
2470 if (!tmp && expect == XSTATE
2471 && d < bufend && *d == ':' && *(d + 1) != ':') {
2473 yylval.pval = savepv(tokenbuf);
2478 /* Check for keywords */
2479 tmp = keyword(tokenbuf, len);
2481 /* Is this a word before a => operator? */
2482 if (strnEQ(d,"=>",2)) {
2484 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2485 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2486 tokenbuf, tokenbuf);
2487 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2488 yylval.opval->op_private = OPpCONST_BARE;
2492 if (tmp < 0) { /* second-class keyword? */
2494 if (expect != XOPERATOR &&
2495 (*s != ':' || s[1] != ':') &&
2496 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2508 default: /* not a keyword */
2512 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2514 /* Get the rest if it looks like a package qualifier */
2516 if (*s == '\'' || *s == ':' && s[1] == ':') {
2517 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2520 croak("Bad name after %s::", tokenbuf);
2523 if (expect == XOPERATOR) {
2524 if (bufptr == linestart) {
2530 no_op("Bareword",s);
2533 /* Look for a subroutine with this name in current package. */
2535 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2537 /* Presume this is going to be a bareword of some sort. */
2540 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2541 yylval.opval->op_private = OPpCONST_BARE;
2543 /* See if it's the indirect object for a list operator. */
2546 oldoldbufptr < bufptr &&
2547 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2548 /* NO SKIPSPACE BEFORE HERE! */
2550 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2552 bool immediate_paren = *s == '(';
2554 /* (Now we can afford to cross potential line boundary.) */
2557 /* Two barewords in a row may indicate method call. */
2559 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2562 /* If not a declared subroutine, it's an indirect object. */
2563 /* (But it's an indir obj regardless for sort.) */
2565 if ((last_lop_op == OP_SORT ||
2566 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2567 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2568 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2573 /* If followed by a paren, it's certainly a subroutine. */
2579 if (gv && GvCVu(gv)) {
2580 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2581 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2586 nextval[nexttoke].opval = yylval.opval;
2593 /* If followed by var or block, call it a method (unless sub) */
2595 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2596 last_lop = oldbufptr;
2597 last_lop_op = OP_METHOD;
2601 /* If followed by a bareword, see if it looks like indir obj. */
2603 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2606 /* Not a method, so call it a subroutine (if defined) */
2608 if (gv && GvCVu(gv)) {
2610 if (lastchar == '-')
2611 warn("Ambiguous use of -%s resolved as -&%s()",
2612 tokenbuf, tokenbuf);
2613 last_lop = oldbufptr;
2614 last_lop_op = OP_ENTERSUB;
2615 /* Check for a constant sub */
2617 if ((sv = cv_const_sv(cv))) {
2619 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2620 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2621 yylval.opval->op_private = 0;
2625 /* Resolve to GV now. */
2626 op_free(yylval.opval);
2627 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2628 /* Is there a prototype? */
2631 char *proto = SvPV((SV*)cv, len);
2634 if (strEQ(proto, "$"))
2636 if (*proto == '&' && *s == '{') {
2637 sv_setpv(subname,"__ANON__");
2641 nextval[nexttoke].opval = yylval.opval;
2647 if (hints & HINT_STRICT_SUBS &&
2650 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2651 last_lop_op != OP_ACCEPT &&
2652 last_lop_op != OP_PIPE_OP &&
2653 last_lop_op != OP_SOCKPAIR)
2656 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2661 /* Call it a bare word */
2665 if (lastchar != '-') {
2666 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2668 warn(warn_reserved, tokenbuf);
2671 if (lastchar && strchr("*%&", lastchar)) {
2672 warn("Operator or semicolon missing before %c%s",
2673 lastchar, tokenbuf);
2674 warn("Ambiguous use of %c resolved as operator %c",
2675 lastchar, lastchar);
2681 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2682 newSVsv(GvSV(curcop->cop_filegv)));
2686 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2687 newSVpvf("%ld", (long)curcop->cop_line));
2690 case KEY___PACKAGE__:
2691 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2693 ? newSVsv(curstname)
2702 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2703 char *pname = "main";
2704 if (tokenbuf[2] == 'D')
2705 pname = HvNAME(curstash ? curstash : defstash);
2706 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2709 GvIOp(gv) = newIO();
2710 IoIFP(GvIOp(gv)) = rsfp;
2711 #if defined(HAS_FCNTL) && defined(F_SETFD)
2713 int fd = PerlIO_fileno(rsfp);
2714 fcntl(fd,F_SETFD,fd >= 3);
2717 /* Mark this internal pseudo-handle as clean */
2718 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2720 IoTYPE(GvIOp(gv)) = '|';
2721 else if ((PerlIO*)rsfp == PerlIO_stdin())
2722 IoTYPE(GvIOp(gv)) = '-';
2724 IoTYPE(GvIOp(gv)) = '<';
2734 if (expect == XSTATE) {
2741 if (*s == ':' && s[1] == ':') {
2744 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2745 tmp = keyword(tokenbuf, len);
2759 LOP(OP_ACCEPT,XTERM);
2765 LOP(OP_ATAN2,XTERM);
2774 LOP(OP_BLESS,XTERM);
2783 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2803 LOP(OP_CRYPT,XTERM);
2807 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2808 if (*d != '0' && isDIGIT(*d))
2809 yywarn("chmod: mode argument is missing initial 0");
2811 LOP(OP_CHMOD,XTERM);
2814 LOP(OP_CHOWN,XTERM);
2817 LOP(OP_CONNECT,XTERM);
2833 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2837 hints |= HINT_BLOCK_SCOPE;
2847 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2848 LOP(OP_DBMOPEN,XTERM);
2854 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2861 yylval.ival = curcop->cop_line;
2875 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2876 UNIBRACK(OP_ENTEREVAL);
2891 case KEY_endhostent:
2897 case KEY_endservent:
2900 case KEY_endprotoent:
2911 yylval.ival = curcop->cop_line;
2913 if (isIDFIRST(*s)) {
2915 if ((bufend - p) >= 3 &&
2916 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2920 croak("Missing $ on loop variable");
2925 LOP(OP_FORMLINE,XTERM);
2931 LOP(OP_FCNTL,XTERM);
2937 LOP(OP_FLOCK,XTERM);
2946 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2949 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2964 case KEY_getpriority:
2965 LOP(OP_GETPRIORITY,XTERM);
2967 case KEY_getprotobyname:
2970 case KEY_getprotobynumber:
2971 LOP(OP_GPBYNUMBER,XTERM);
2973 case KEY_getprotoent:
2985 case KEY_getpeername:
2986 UNI(OP_GETPEERNAME);
2988 case KEY_gethostbyname:
2991 case KEY_gethostbyaddr:
2992 LOP(OP_GHBYADDR,XTERM);
2994 case KEY_gethostent:
2997 case KEY_getnetbyname:
3000 case KEY_getnetbyaddr:
3001 LOP(OP_GNBYADDR,XTERM);
3006 case KEY_getservbyname:
3007 LOP(OP_GSBYNAME,XTERM);
3009 case KEY_getservbyport:
3010 LOP(OP_GSBYPORT,XTERM);
3012 case KEY_getservent:
3015 case KEY_getsockname:
3016 UNI(OP_GETSOCKNAME);
3018 case KEY_getsockopt:
3019 LOP(OP_GSOCKOPT,XTERM);
3041 yylval.ival = curcop->cop_line;
3045 LOP(OP_INDEX,XTERM);
3051 LOP(OP_IOCTL,XTERM);
3063 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3094 LOP(OP_LISTEN,XTERM);
3101 TERM(sublex_start());
3104 LOP(OP_MAPSTART,XREF);
3107 LOP(OP_MKDIR,XTERM);
3110 LOP(OP_MSGCTL,XTERM);
3113 LOP(OP_MSGGET,XTERM);
3116 LOP(OP_MSGRCV,XTERM);
3119 LOP(OP_MSGSND,XTERM);
3126 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3133 if (expect != XSTATE)
3134 yyerror("\"no\" not allowed in expression");
3135 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3136 s = force_version(s);
3145 if (isIDFIRST(*s)) {
3147 for (d = s; isALNUM(*d); d++) ;
3149 if (strchr("|&*+-=!?:.", *t))
3150 warn("Precedence problem: open %.*s should be open(%.*s)",
3156 yylval.ival = OP_OR;
3166 LOP(OP_OPEN_DIR,XTERM);
3169 checkcomma(s,tokenbuf,"filehandle");
3173 checkcomma(s,tokenbuf,"filehandle");
3192 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3196 LOP(OP_PIPE_OP,XTERM);
3201 missingterm((char*)0);
3202 yylval.ival = OP_CONST;
3203 TERM(sublex_start());
3211 missingterm((char*)0);
3212 if (dowarn && SvLEN(lex_stuff)) {
3213 d = SvPV_force(lex_stuff, len);
3214 for (; len; --len, ++d) {
3216 warn("Possible attempt to separate words with commas");
3220 warn("Possible attempt to put comments in qw() list");
3226 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3230 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3233 yylval.ival = OP_SPLIT;
3237 last_lop = oldbufptr;
3238 last_lop_op = OP_SPLIT;
3244 missingterm((char*)0);
3245 yylval.ival = OP_STRINGIFY;
3246 if (SvIVX(lex_stuff) == '\'')
3247 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3248 TERM(sublex_start());
3253 missingterm((char*)0);
3254 yylval.ival = OP_BACKTICK;
3256 TERM(sublex_start());
3263 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3264 if (isIDFIRST(*tokenbuf))
3265 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3267 yyerror("<> should be quotes");
3274 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3278 LOP(OP_RENAME,XTERM);
3287 LOP(OP_RINDEX,XTERM);
3310 LOP(OP_REVERSE,XTERM);
3321 TERM(sublex_start());
3323 TOKEN(1); /* force error */
3332 LOP(OP_SELECT,XTERM);
3338 LOP(OP_SEMCTL,XTERM);
3341 LOP(OP_SEMGET,XTERM);
3344 LOP(OP_SEMOP,XTERM);
3350 LOP(OP_SETPGRP,XTERM);
3352 case KEY_setpriority:
3353 LOP(OP_SETPRIORITY,XTERM);
3355 case KEY_sethostent:
3361 case KEY_setservent:
3364 case KEY_setprotoent:
3374 LOP(OP_SEEKDIR,XTERM);
3376 case KEY_setsockopt:
3377 LOP(OP_SSOCKOPT,XTERM);
3383 LOP(OP_SHMCTL,XTERM);
3386 LOP(OP_SHMGET,XTERM);
3389 LOP(OP_SHMREAD,XTERM);
3392 LOP(OP_SHMWRITE,XTERM);
3395 LOP(OP_SHUTDOWN,XTERM);
3404 LOP(OP_SOCKET,XTERM);
3406 case KEY_socketpair:
3407 LOP(OP_SOCKPAIR,XTERM);
3410 checkcomma(s,tokenbuf,"subroutine name");
3412 if (*s == ';' || *s == ')') /* probably a close */
3413 croak("sort is now a reserved word");
3415 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3419 LOP(OP_SPLIT,XTERM);
3422 LOP(OP_SPRINTF,XTERM);
3425 LOP(OP_SPLICE,XTERM);
3441 LOP(OP_SUBSTR,XTERM);
3448 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3449 char tmpbuf[sizeof tokenbuf];
3451 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3452 if (strchr(tmpbuf, ':'))
3453 sv_setpv(subname, tmpbuf);
3455 sv_setsv(subname,curstname);
3456 sv_catpvn(subname,"::",2);
3457 sv_catpvn(subname,tmpbuf,len);
3459 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3463 expect = XTERMBLOCK;
3464 sv_setpv(subname,"?");
3467 if (tmp == KEY_format) {
3470 lex_formbrack = lex_brackets + 1;
3474 /* Look for a prototype */
3481 SvREFCNT_dec(lex_stuff);
3483 croak("Prototype not terminated");
3486 d = SvPVX(lex_stuff);
3488 for (p = d; *p; ++p) {
3493 SvCUR(lex_stuff) = tmp;
3496 nextval[1] = nextval[0];
3497 nexttype[1] = nexttype[0];
3498 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3499 nexttype[0] = THING;
3500 if (nexttoke == 1) {
3501 lex_defer = lex_state;
3502 lex_expect = expect;
3503 lex_state = LEX_KNOWNEXT;
3508 if (*SvPV(subname,na) == '?') {
3509 sv_setpv(subname,"__ANON__");
3516 LOP(OP_SYSTEM,XREF);
3519 LOP(OP_SYMLINK,XTERM);
3522 LOP(OP_SYSCALL,XTERM);
3525 LOP(OP_SYSOPEN,XTERM);
3528 LOP(OP_SYSSEEK,XTERM);
3531 LOP(OP_SYSREAD,XTERM);
3534 LOP(OP_SYSWRITE,XTERM);
3538 TERM(sublex_start());
3559 LOP(OP_TRUNCATE,XTERM);
3571 yylval.ival = curcop->cop_line;
3575 yylval.ival = curcop->cop_line;
3579 LOP(OP_UNLINK,XTERM);
3585 LOP(OP_UNPACK,XTERM);
3588 LOP(OP_UTIME,XTERM);
3592 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3593 if (*d != '0' && isDIGIT(*d))
3594 yywarn("umask: argument is missing initial 0");
3599 LOP(OP_UNSHIFT,XTERM);
3602 if (expect != XSTATE)
3603 yyerror("\"use\" not allowed in expression");
3606 s = force_version(s);
3607 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3608 nextval[nexttoke].opval = Nullop;
3613 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3614 s = force_version(s);
3627 yylval.ival = curcop->cop_line;
3631 hints |= HINT_BLOCK_SCOPE;
3638 LOP(OP_WAITPID,XTERM);
3644 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3648 if (expect == XOPERATOR)
3654 yylval.ival = OP_XOR;
3659 TERM(sublex_start());
3672 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3673 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3674 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3675 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3676 if (strEQ(d,"__END__")) return KEY___END__;
3680 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3685 if (strEQ(d,"and")) return -KEY_and;
3686 if (strEQ(d,"abs")) return -KEY_abs;
3689 if (strEQ(d,"alarm")) return -KEY_alarm;
3690 if (strEQ(d,"atan2")) return -KEY_atan2;
3693 if (strEQ(d,"accept")) return -KEY_accept;
3698 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3701 if (strEQ(d,"bless")) return -KEY_bless;
3702 if (strEQ(d,"bind")) return -KEY_bind;
3703 if (strEQ(d,"binmode")) return -KEY_binmode;
3706 if (strEQ(d,"CORE")) return -KEY_CORE;
3711 if (strEQ(d,"cmp")) return -KEY_cmp;
3712 if (strEQ(d,"chr")) return -KEY_chr;
3713 if (strEQ(d,"cos")) return -KEY_cos;
3716 if (strEQ(d,"chop")) return KEY_chop;
3719 if (strEQ(d,"close")) return -KEY_close;
3720 if (strEQ(d,"chdir")) return -KEY_chdir;
3721 if (strEQ(d,"chomp")) return KEY_chomp;
3722 if (strEQ(d,"chmod")) return -KEY_chmod;
3723 if (strEQ(d,"chown")) return -KEY_chown;
3724 if (strEQ(d,"crypt")) return -KEY_crypt;
3727 if (strEQ(d,"chroot")) return -KEY_chroot;
3728 if (strEQ(d,"caller")) return -KEY_caller;
3731 if (strEQ(d,"connect")) return -KEY_connect;
3734 if (strEQ(d,"closedir")) return -KEY_closedir;
3735 if (strEQ(d,"continue")) return -KEY_continue;
3740 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3745 if (strEQ(d,"do")) return KEY_do;
3748 if (strEQ(d,"die")) return -KEY_die;
3751 if (strEQ(d,"dump")) return -KEY_dump;
3754 if (strEQ(d,"delete")) return KEY_delete;
3757 if (strEQ(d,"defined")) return KEY_defined;
3758 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3761 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3766 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3767 if (strEQ(d,"END")) return KEY_END;
3772 if (strEQ(d,"eq")) return -KEY_eq;
3775 if (strEQ(d,"eof")) return -KEY_eof;
3776 if (strEQ(d,"exp")) return -KEY_exp;
3779 if (strEQ(d,"else")) return KEY_else;
3780 if (strEQ(d,"exit")) return -KEY_exit;
3781 if (strEQ(d,"eval")) return KEY_eval;
3782 if (strEQ(d,"exec")) return -KEY_exec;
3783 if (strEQ(d,"each")) return KEY_each;
3786 if (strEQ(d,"elsif")) return KEY_elsif;
3789 if (strEQ(d,"exists")) return KEY_exists;
3790 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3793 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3794 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3797 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3800 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3801 if (strEQ(d,"endservent")) return -KEY_endservent;
3804 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3811 if (strEQ(d,"for")) return KEY_for;
3814 if (strEQ(d,"fork")) return -KEY_fork;
3817 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3818 if (strEQ(d,"flock")) return -KEY_flock;
3821 if (strEQ(d,"format")) return KEY_format;
3822 if (strEQ(d,"fileno")) return -KEY_fileno;
3825 if (strEQ(d,"foreach")) return KEY_foreach;
3828 if (strEQ(d,"formline")) return -KEY_formline;
3834 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3835 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3839 if (strnEQ(d,"get",3)) {
3844 if (strEQ(d,"ppid")) return -KEY_getppid;
3845 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3848 if (strEQ(d,"pwent")) return -KEY_getpwent;
3849 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3850 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3853 if (strEQ(d,"peername")) return -KEY_getpeername;
3854 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3855 if (strEQ(d,"priority")) return -KEY_getpriority;
3858 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3861 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3865 else if (*d == 'h') {
3866 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3867 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3868 if (strEQ(d,"hostent")) return -KEY_gethostent;
3870 else if (*d == 'n') {
3871 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3872 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3873 if (strEQ(d,"netent")) return -KEY_getnetent;
3875 else if (*d == 's') {
3876 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3877 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3878 if (strEQ(d,"servent")) return -KEY_getservent;
3879 if (strEQ(d,"sockname")) return -KEY_getsockname;
3880 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3882 else if (*d == 'g') {
3883 if (strEQ(d,"grent")) return -KEY_getgrent;
3884 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3885 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3887 else if (*d == 'l') {
3888 if (strEQ(d,"login")) return -KEY_getlogin;
3890 else if (strEQ(d,"c")) return -KEY_getc;
3895 if (strEQ(d,"gt")) return -KEY_gt;
3896 if (strEQ(d,"ge")) return -KEY_ge;
3899 if (strEQ(d,"grep")) return KEY_grep;
3900 if (strEQ(d,"goto")) return KEY_goto;
3901 if (strEQ(d,"glob")) return -KEY_glob;
3904 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3909 if (strEQ(d,"hex")) return -KEY_hex;
3914 if (strEQ(d,"if")) return KEY_if;
3917 if (strEQ(d,"int")) return -KEY_int;
3920 if (strEQ(d,"index")) return -KEY_index;
3921 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3926 if (strEQ(d,"join")) return -KEY_join;
3930 if (strEQ(d,"keys")) return KEY_keys;
3931 if (strEQ(d,"kill")) return -KEY_kill;
3936 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3937 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3943 if (strEQ(d,"lt")) return -KEY_lt;
3944 if (strEQ(d,"le")) return -KEY_le;
3945 if (strEQ(d,"lc")) return -KEY_lc;
3948 if (strEQ(d,"log")) return -KEY_log;
3951 if (strEQ(d,"last")) return KEY_last;
3952 if (strEQ(d,"link")) return -KEY_link;
3955 if (strEQ(d,"local")) return KEY_local;
3956 if (strEQ(d,"lstat")) return -KEY_lstat;
3959 if (strEQ(d,"length")) return -KEY_length;
3960 if (strEQ(d,"listen")) return -KEY_listen;
3963 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3966 if (strEQ(d,"localtime")) return -KEY_localtime;
3972 case 1: return KEY_m;
3974 if (strEQ(d,"my")) return KEY_my;
3977 if (strEQ(d,"map")) return KEY_map;
3980 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3983 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3984 if (strEQ(d,"msgget")) return -KEY_msgget;
3985 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3986 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3991 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3994 if (strEQ(d,"next")) return KEY_next;
3995 if (strEQ(d,"ne")) return -KEY_ne;
3996 if (strEQ(d,"not")) return -KEY_not;
3997 if (strEQ(d,"no")) return KEY_no;
4002 if (strEQ(d,"or")) return -KEY_or;
4005 if (strEQ(d,"ord")) return -KEY_ord;
4006 if (strEQ(d,"oct")) return -KEY_oct;
4009 if (strEQ(d,"open")) return -KEY_open;
4012 if (strEQ(d,"opendir")) return -KEY_opendir;
4019 if (strEQ(d,"pop")) return KEY_pop;
4020 if (strEQ(d,"pos")) return KEY_pos;
4023 if (strEQ(d,"push")) return KEY_push;
4024 if (strEQ(d,"pack")) return -KEY_pack;
4025 if (strEQ(d,"pipe")) return -KEY_pipe;
4028 if (strEQ(d,"print")) return KEY_print;
4031 if (strEQ(d,"printf")) return KEY_printf;
4034 if (strEQ(d,"package")) return KEY_package;
4037 if (strEQ(d,"prototype")) return KEY_prototype;
4042 if (strEQ(d,"q")) return KEY_q;
4043 if (strEQ(d,"qq")) return KEY_qq;
4044 if (strEQ(d,"qw")) return KEY_qw;
4045 if (strEQ(d,"qx")) return KEY_qx;
4047 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4052 if (strEQ(d,"ref")) return -KEY_ref;
4055 if (strEQ(d,"read")) return -KEY_read;
4056 if (strEQ(d,"rand")) return -KEY_rand;
4057 if (strEQ(d,"recv")) return -KEY_recv;
4058 if (strEQ(d,"redo")) return KEY_redo;
4061 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4062 if (strEQ(d,"reset")) return -KEY_reset;
4065 if (strEQ(d,"return")) return KEY_return;
4066 if (strEQ(d,"rename")) return -KEY_rename;
4067 if (strEQ(d,"rindex")) return -KEY_rindex;
4070 if (strEQ(d,"require")) return -KEY_require;
4071 if (strEQ(d,"reverse")) return -KEY_reverse;
4072 if (strEQ(d,"readdir")) return -KEY_readdir;
4075 if (strEQ(d,"readlink")) return -KEY_readlink;
4076 if (strEQ(d,"readline")) return -KEY_readline;
4077 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4080 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4086 case 0: return KEY_s;
4088 if (strEQ(d,"scalar")) return KEY_scalar;
4093 if (strEQ(d,"seek")) return -KEY_seek;
4094 if (strEQ(d,"send")) return -KEY_send;
4097 if (strEQ(d,"semop")) return -KEY_semop;
4100 if (strEQ(d,"select")) return -KEY_select;
4101 if (strEQ(d,"semctl")) return -KEY_semctl;
4102 if (strEQ(d,"semget")) return -KEY_semget;
4105 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4106 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4109 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4110 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4113 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4116 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4117 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4118 if (strEQ(d,"setservent")) return -KEY_setservent;
4121 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4122 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4129 if (strEQ(d,"shift")) return KEY_shift;
4132 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4133 if (strEQ(d,"shmget")) return -KEY_shmget;
4136 if (strEQ(d,"shmread")) return -KEY_shmread;
4139 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4140 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4145 if (strEQ(d,"sin")) return -KEY_sin;
4148 if (strEQ(d,"sleep")) return -KEY_sleep;
4151 if (strEQ(d,"sort")) return KEY_sort;
4152 if (strEQ(d,"socket")) return -KEY_socket;
4153 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4156 if (strEQ(d,"split")) return KEY_split;
4157 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4158 if (strEQ(d,"splice")) return KEY_splice;
4161 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4164 if (strEQ(d,"srand")) return -KEY_srand;
4167 if (strEQ(d,"stat")) return -KEY_stat;
4168 if (strEQ(d,"study")) return KEY_study;
4171 if (strEQ(d,"substr")) return -KEY_substr;
4172 if (strEQ(d,"sub")) return KEY_sub;
4177 if (strEQ(d,"system")) return -KEY_system;
4180 if (strEQ(d,"symlink")) return -KEY_symlink;
4181 if (strEQ(d,"syscall")) return -KEY_syscall;
4182 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4183 if (strEQ(d,"sysread")) return -KEY_sysread;
4184 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4187 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4196 if (strEQ(d,"tr")) return KEY_tr;
4199 if (strEQ(d,"tie")) return KEY_tie;
4202 if (strEQ(d,"tell")) return -KEY_tell;
4203 if (strEQ(d,"tied")) return KEY_tied;
4204 if (strEQ(d,"time")) return -KEY_time;
4207 if (strEQ(d,"times")) return -KEY_times;
4210 if (strEQ(d,"telldir")) return -KEY_telldir;
4213 if (strEQ(d,"truncate")) return -KEY_truncate;
4220 if (strEQ(d,"uc")) return -KEY_uc;
4223 if (strEQ(d,"use")) return KEY_use;
4226 if (strEQ(d,"undef")) return KEY_undef;
4227 if (strEQ(d,"until")) return KEY_until;
4228 if (strEQ(d,"untie")) return KEY_untie;
4229 if (strEQ(d,"utime")) return -KEY_utime;
4230 if (strEQ(d,"umask")) return -KEY_umask;
4233 if (strEQ(d,"unless")) return KEY_unless;
4234 if (strEQ(d,"unpack")) return -KEY_unpack;
4235 if (strEQ(d,"unlink")) return -KEY_unlink;
4238 if (strEQ(d,"unshift")) return KEY_unshift;
4239 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4244 if (strEQ(d,"values")) return -KEY_values;
4245 if (strEQ(d,"vec")) return -KEY_vec;
4250 if (strEQ(d,"warn")) return -KEY_warn;
4251 if (strEQ(d,"wait")) return -KEY_wait;
4254 if (strEQ(d,"while")) return KEY_while;
4255 if (strEQ(d,"write")) return -KEY_write;
4258 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4261 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4266 if (len == 1) return -KEY_x;
4267 if (strEQ(d,"xor")) return -KEY_xor;
4270 if (len == 1) return KEY_y;
4279 checkcomma(s,name,what)
4286 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4288 for (w = s+2; *w && level; w++) {
4295 for (; *w && isSPACE(*w); w++) ;
4296 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4297 warn("%s (...) interpreted as function",name);
4299 while (s < bufend && isSPACE(*s))
4303 while (s < bufend && isSPACE(*s))
4305 if (isIDFIRST(*s)) {
4309 while (s < bufend && isSPACE(*s))
4314 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4318 croak("No comma allowed after %s", what);
4324 scan_word(s, dest, destlen, allow_package, slp)
4331 register char *d = dest;
4332 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4338 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4343 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4356 scan_ident(s, send, dest, destlen, ck_uni)
4358 register char *send;
4368 if (lex_brackets == 0)
4373 e = d + destlen - 3; /* two-character token, ending NUL */
4375 while (isDIGIT(*s)) {
4387 else if (*s == '\'' && isIDFIRST(s[1])) {
4392 else if (*s == ':' && s[1] == ':') {
4403 if (lex_state != LEX_NORMAL)
4404 lex_state = LEX_INTERPENDMAYBE;
4407 if (*s == '$' && s[1] &&
4408 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4410 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4411 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4424 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4429 if (isSPACE(s[-1])) {
4432 if (ch != ' ' && ch != '\t') {
4438 if (isIDFIRST(*d)) {
4440 while (isALNUM(*s) || *s == ':')
4443 while (s < send && (*s == ' ' || *s == '\t')) s++;
4444 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4445 if (dowarn && keyword(dest, d - dest)) {
4446 char *brack = *s == '[' ? "[...]" : "{...}";
4447 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4448 funny, dest, brack, funny, dest, brack);
4450 lex_fakebrack = lex_brackets+1;
4452 lex_brackstack[lex_brackets++] = XOPERATOR;
4458 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4459 lex_state = LEX_INTERPEND;
4463 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4464 warn("Ambiguous use of %c{%s} resolved to %c%s",
4465 funny, dest, funny, dest);
4468 s = bracket; /* let the parser handle it */
4472 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4473 lex_state = LEX_INTERPEND;
4477 void pmflag(pmfl,ch)
4484 *pmfl |= PMf_GLOBAL;
4488 *pmfl |= PMf_MULTILINE;
4490 *pmfl |= PMf_SINGLELINE;
4492 *pmfl |= PMf_EXTENDED;
4502 s = scan_str(start);
4505 SvREFCNT_dec(lex_stuff);
4507 croak("Search pattern not terminated");
4510 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4511 if (multi_open == '?')
4512 pm->op_pmflags |= PMf_ONCE;
4513 while (*s && strchr("iogmsx", *s))
4514 pmflag(&pm->op_pmflags,*s++);
4515 pm->op_pmpermflags = pm->op_pmflags;
4518 yylval.ival = OP_MATCH;
4531 yylval.ival = OP_NULL;
4533 s = scan_str(start);
4537 SvREFCNT_dec(lex_stuff);
4539 croak("Substitution pattern not terminated");
4542 if (s[-1] == multi_open)
4545 first_start = multi_start;
4549 SvREFCNT_dec(lex_stuff);
4552 SvREFCNT_dec(lex_repl);
4554 croak("Substitution replacement not terminated");
4556 multi_start = first_start; /* so whole substitution is taken together */
4558 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4559 while (*s && strchr("iogmsex", *s)) {
4565 pmflag(&pm->op_pmflags,*s++);
4570 pm->op_pmflags |= PMf_EVAL;
4571 repl = newSVpv("",0);
4573 sv_catpv(repl, es ? "eval " : "do ");
4574 sv_catpvn(repl, "{ ", 2);
4575 sv_catsv(repl, lex_repl);
4576 sv_catpvn(repl, " };", 2);
4577 SvCOMPILED_on(repl);
4578 SvREFCNT_dec(lex_repl);
4582 pm->op_pmpermflags = pm->op_pmflags;
4584 yylval.ival = OP_SUBST;
4592 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4593 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4595 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4596 pm->op_pmflags |= PMf_SCANFIRST;
4597 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4598 pm->op_pmslen = SvCUR(pm->op_pmshort);
4600 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4601 if (pm->op_pmshort &&
4602 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4604 if (pm->op_pmflags & PMf_SCANFIRST) {
4605 SvREFCNT_dec(pm->op_pmshort);
4606 pm->op_pmshort = Nullsv;
4609 SvREFCNT_dec(pm->op_pmregexp->regmust);
4610 pm->op_pmregexp->regmust = Nullsv;
4614 /* promote the better string */
4615 if ((!pm->op_pmshort &&
4616 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4617 ((pm->op_pmflags & PMf_SCANFIRST) &&
4618 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4619 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4620 pm->op_pmshort = pm->op_pmregexp->regmust;
4621 pm->op_pmslen = SvCUR(pm->op_pmshort);
4622 pm->op_pmregexp->regmust = Nullsv;
4623 pm->op_pmflags |= PMf_SCANFIRST;
4639 yylval.ival = OP_NULL;
4641 s = scan_str(start);
4644 SvREFCNT_dec(lex_stuff);
4646 croak("Translation pattern not terminated");
4648 if (s[-1] == multi_open)
4654 SvREFCNT_dec(lex_stuff);
4657 SvREFCNT_dec(lex_repl);
4659 croak("Translation replacement not terminated");
4662 New(803,tbl,256,short);
4663 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4665 complement = delete = squash = 0;
4666 while (*s == 'c' || *s == 'd' || *s == 's') {
4668 complement = OPpTRANS_COMPLEMENT;
4670 delete = OPpTRANS_DELETE;
4672 squash = OPpTRANS_SQUASH;
4675 op->op_private = delete|squash|complement;
4678 yylval.ival = OP_TRANS;
4687 I32 op_type = OP_SCALAR;
4693 int outer = (rsfp && !lex_inwhat);
4699 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4700 if (*peek && strchr("`'\"",*peek)) {
4703 s = cpytill(d,s,bufend,term,&len);
4714 deprecate("bare << to mean <<\"\"");
4717 } /* assuming tokenbuf won't clobber */
4722 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4723 herewas = newSVpv(s,bufend-s);
4725 s--, herewas = newSVpv(s,d-s);
4726 s += SvCUR(herewas);
4728 tmpstr = NEWSV(87,80);
4729 sv_upgrade(tmpstr, SVt_PVIV);
4734 else if (term == '`') {
4735 op_type = OP_BACKTICK;
4736 SvIVX(tmpstr) = '\\';
4740 multi_start = curcop->cop_line;
4741 multi_open = multi_close = '<';
4745 while (s < bufend &&
4746 (*s != term || memNE(s,tokenbuf,len)) ) {
4751 curcop->cop_line = multi_start;
4752 missingterm(tokenbuf);
4754 sv_setpvn(tmpstr,d+1,s-d);
4756 sv_catpvn(herewas,s,bufend-s);
4757 sv_setsv(linestr,herewas);
4758 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4759 bufend = SvPVX(linestr) + SvCUR(linestr);
4762 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4763 while (s >= bufend) { /* multiple line string? */
4765 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4766 curcop->cop_line = multi_start;
4767 missingterm(tokenbuf);
4770 if (perldb && curstash != debstash) {
4771 SV *sv = NEWSV(88,0);
4773 sv_upgrade(sv, SVt_PVMG);
4774 sv_setsv(sv,linestr);
4775 av_store(GvAV(curcop->cop_filegv),
4776 (I32)curcop->cop_line,sv);
4778 bufend = SvPVX(linestr) + SvCUR(linestr);
4779 if (*s == term && memEQ(s,tokenbuf,len)) {
4782 sv_catsv(linestr,herewas);
4783 bufend = SvPVX(linestr) + SvCUR(linestr);
4787 sv_catsv(tmpstr,linestr);
4790 multi_end = curcop->cop_line;
4792 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4793 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4794 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4796 SvREFCNT_dec(herewas);
4798 yylval.ival = op_type;
4803 scan_inputsymbol(start)
4806 register char *s = start;
4811 s = cpytill(d, s+1, bufend, '>', &len);
4815 croak("Unterminated <> operator");
4817 if (*d == '$' && d[1]) d++;
4818 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4820 if (d - tokenbuf != len) {
4821 yylval.ival = OP_GLOB;
4823 s = scan_str(start);
4825 croak("Glob not terminated");
4831 (void)strcpy(d,"ARGV");
4834 if (tmp = pad_findmy(d)) {
4835 OP *op = newOP(OP_PADSV, 0);
4837 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4840 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4841 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4842 newUNOP(OP_RV2GV, 0,
4843 newUNOP(OP_RV2SV, 0,
4844 newGVOP(OP_GV, 0, gv))));
4846 yylval.ival = OP_NULL;
4849 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4850 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4851 yylval.ival = OP_NULL;
4863 register char *s = start;
4872 multi_start = curcop->cop_line;
4874 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4879 sv_upgrade(sv, SVt_PVIV);
4881 (void)SvPOK_only(sv); /* validate pointer */
4884 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4885 to = SvPVX(sv)+SvCUR(sv);
4886 if (multi_open == multi_close) {
4887 for (; s < bufend; s++,to++) {
4888 if (*s == '\n' && !rsfp)
4890 if (*s == '\\' && s+1 < bufend && term != '\\') {
4896 else if (*s == term)
4902 for (; s < bufend; s++,to++) {
4903 if (*s == '\n' && !rsfp)
4905 if (*s == '\\' && s+1 < bufend && term != '\\') {
4911 else if (*s == term && --brackets <= 0)
4913 else if (*s == multi_open)
4919 SvCUR_set(sv, to - SvPVX(sv));
4921 if (s < bufend) break; /* string ends on this line? */
4924 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4926 curcop->cop_line = multi_start;
4930 if (perldb && curstash != debstash) {
4931 SV *sv = NEWSV(88,0);
4933 sv_upgrade(sv, SVt_PVMG);
4934 sv_setsv(sv,linestr);
4935 av_store(GvAV(curcop->cop_filegv),
4936 (I32)curcop->cop_line, sv);
4938 bufend = SvPVX(linestr) + SvCUR(linestr);
4940 multi_end = curcop->cop_line;
4942 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4943 SvLEN_set(sv, SvCUR(sv) + 1);
4944 Renew(SvPVX(sv), SvLEN(sv), char);
4957 register char *s = start;
4967 croak("panic: scan_num");
4972 bool overflowed = FALSE;
4978 else if (s[1] == '.')
4994 yyerror("Illegal octal digit");
4996 case '0': case '1': case '2': case '3': case '4':
4997 case '5': case '6': case '7':
5000 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5001 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5007 if (!overflowed && (n >> shift) != u) {
5008 warn("Integer overflow in %s number",
5009 (shift == 4) ? "hex" : "octal");
5021 case '1': case '2': case '3': case '4': case '5':
5022 case '6': case '7': case '8': case '9': case '.':
5026 while (isDIGIT(*s) || *s == '_') {
5028 if (dowarn && lastub && s - lastub != 3)
5029 warn("Misplaced _ in number");
5035 if (dowarn && lastub && s - lastub != 3)
5036 warn("Misplaced _ in number");
5037 if (*s == '.' && s[1] != '.') {
5040 while (isDIGIT(*s) || *s == '_') {
5047 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5050 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5051 if (*s == '+' || *s == '-')
5058 SET_NUMERIC_STANDARD();
5059 value = atof(tokenbuf);
5061 if (!floatit && (double)tryiv == value)
5062 sv_setiv(sv, tryiv);
5064 sv_setnv(sv, value);
5068 yylval.opval = newSVOP(OP_CONST, 0, sv);
5079 SV *stuff = newSVpv("",0);
5080 bool needargs = FALSE;
5083 if (*s == '.' || *s == '}') {
5085 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5089 if (in_eval && !rsfp) {
5090 eol = strchr(s,'\n');
5095 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5097 for (t = s; t < eol; t++) {
5098 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5100 goto enough; /* ~~ must be first line in formline */
5102 if (*t == '@' || *t == '^')
5105 sv_catpvn(stuff, s, eol-s);
5109 s = filter_gets(linestr, rsfp, 0);
5110 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5111 bufend = bufptr + SvCUR(linestr);
5114 yyerror("Format not terminated");
5124 lex_state = LEX_NORMAL;
5125 nextval[nexttoke].ival = 0;
5129 lex_state = LEX_FORMLINE;
5130 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5132 nextval[nexttoke].ival = OP_FORMLINE;
5136 SvREFCNT_dec(stuff);
5148 cshlen = strlen(cshname);
5153 start_subparse(is_format, flags)
5157 I32 oldsavestack_ix = savestack_ix;
5158 CV* outsidecv = compcv;
5162 assert(SvTYPE(compcv) == SVt_PVCV);
5169 SAVESPTR(comppad_name);
5171 SAVEI32(comppad_name_fill);
5172 SAVEI32(min_intro_pending);
5173 SAVEI32(max_intro_pending);
5174 SAVEI32(pad_reset_pending);
5176 compcv = (CV*)NEWSV(1104,0);
5177 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5178 CvFLAGS(compcv) |= flags;
5181 comppad_name = newAV();
5182 comppad_name_fill = 0;
5183 min_intro_pending = 0;
5184 av_push(comppad, Nullsv);
5185 curpad = AvARRAY(comppad);
5187 subline = curcop->cop_line;
5189 comppadlist = newAV();
5190 AvREAL_off(comppadlist);
5191 av_store(comppadlist, 0, (SV*)comppad_name);
5192 av_store(comppadlist, 1, (SV*)comppad);
5194 CvPADLIST(compcv) = comppadlist;
5195 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5197 return oldsavestack_ix;
5216 char *context = NULL;
5220 if (!yychar || (yychar == ';' && !rsfp))
5222 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5223 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5224 while (isSPACE(*oldoldbufptr))
5226 context = oldoldbufptr;
5227 contlen = bufptr - oldoldbufptr;
5229 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5230 oldbufptr != bufptr) {
5231 while (isSPACE(*oldbufptr))
5233 context = oldbufptr;
5234 contlen = bufptr - oldbufptr;
5236 else if (yychar > 255)
5237 where = "next token ???";
5238 else if ((yychar & 127) == 127) {
5239 if (lex_state == LEX_NORMAL ||
5240 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5241 where = "at end of line";
5243 where = "within pattern";
5245 where = "within string";
5248 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5250 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5251 else if (isPRINT_LC(yychar))
5252 sv_catpvf(where_sv, "%c", yychar);
5254 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5255 where = SvPVX(where_sv);
5257 msg = sv_2mortal(newSVpv(s, 0));
5258 sv_catpvf(msg, " at %S line %ld, ",
5259 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5261 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5263 sv_catpvf(msg, "%s\n", where);
5264 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5266 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5267 (int)multi_open,(int)multi_close,(long)multi_start);
5273 sv_catsv(GvSV(errgv), msg);
5275 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5276 if (++error_count >= 10)
5277 croak("%S has too many errors.\n", GvSV(curcop->cop_filegv));