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, I32 ck_uni));
26 static char *scan_inputsymbol _((char *start));
27 static char *scan_pat _((char *start));
28 static char *scan_str _((char *start));
29 static char *scan_subst _((char *start));
30 static char *scan_trans _((char *start));
31 static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
32 static char *skipspace _((char *s));
33 static void checkcomma _((char *s, char *name, char *what));
34 static void force_ident _((char *s, int kind));
35 static void incline _((char *s));
36 static int intuit_method _((char *s, GV *gv));
37 static int intuit_more _((char *s));
38 static I32 lop _((I32 f, expectation x, char *s));
39 static void missingterm _((char *s));
40 static void no_op _((char *what, char *s));
41 static void set_csh _((void));
42 static I32 sublex_done _((void));
43 static I32 sublex_push _((void));
44 static I32 sublex_start _((void));
46 static int uni _((I32 f, char *s));
48 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
49 static void restore_rsfp _((void *f));
51 static char *linestart; /* beg. of most recently read line */
53 static char pending_ident; /* pending identifier lookup */
56 I32 super_state; /* lexer state to save */
57 I32 sub_inwhat; /* "lex_inwhat" to use */
58 OP *sub_op; /* "lex_op" to use */
61 /* The following are arranged oddly so that the guard on the switch statement
62 * can get by with a single comparison (if the compiler is smart enough).
66 #define LEX_INTERPNORMAL 9
67 #define LEX_INTERPCASEMOD 8
68 #define LEX_INTERPPUSH 7
69 #define LEX_INTERPSTART 6
70 #define LEX_INTERPEND 5
71 #define LEX_INTERPENDMAYBE 4
72 #define LEX_INTERPCONCAT 3
73 #define LEX_INTERPCONST 2
74 #define LEX_FORMLINE 1
75 #define LEX_KNOWNEXT 0
84 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
86 # include <unistd.h> /* Needed for execv() */
99 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
101 #define TOKEN(retval) return (bufptr = s,(int)retval)
102 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
103 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
104 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
105 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
106 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
107 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
108 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
109 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
110 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
111 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
112 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
113 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
114 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
115 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
116 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
117 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
118 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
119 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
120 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
122 /* This bit of chicanery makes a unary function followed by
123 * a parenthesis into a function with one argument, highest precedence.
125 #define UNI(f) return(yylval.ival = f, \
128 last_uni = oldbufptr, \
130 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
132 #define UNIBRACK(f) return(yylval.ival = f, \
134 last_uni = oldbufptr, \
135 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
137 /* grandfather return to old style */
138 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
144 if (*bufptr == '=') {
146 if (toketype == ANDAND)
147 yylval.ival = OP_ANDASSIGN;
148 else if (toketype == OROR)
149 yylval.ival = OP_ORASSIGN;
160 char *oldbp = bufptr;
161 bool is_first = (oldbufptr == linestart);
165 New(890, msg, strlen(what) + 40, char);
166 sprintf(msg, "%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, 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 $%c", *s, *s);
815 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
821 if (lex_inwhat == OP_TRANS) {
829 case '0': case '1': case '2': case '3':
830 case '4': case '5': case '6': case '7':
831 *d++ = scan_oct(s, 3, &len);
835 *d++ = scan_hex(++s, 2, &len);
871 SvCUR_set(sv, d - SvPVX(sv));
874 if (SvCUR(sv) + 5 < SvLEN(sv)) {
875 SvLEN_set(sv, SvCUR(sv) + 1);
876 Renew(SvPVX(sv), SvLEN(sv), char);
879 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
885 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
892 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
894 if (*s != '{' && *s != '[')
899 /* In a pattern, so maybe we have {n,m}. */
916 /* On the other hand, maybe we have a character class */
919 if (*s == ']' || *s == '^')
922 int weight = 2; /* let's weigh the evidence */
924 unsigned char un_char = 0, last_un_char;
925 char *send = strchr(s,']');
928 if (!send) /* has to be an expression */
934 else if (isDIGIT(*s)) {
936 if (isDIGIT(s[1]) && s[2] == ']')
942 for (; s < send; s++) {
943 last_un_char = un_char;
944 un_char = (unsigned char)*s;
949 weight -= seen[un_char] * 10;
951 scan_ident(s,send,tmpbuf,FALSE);
952 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
957 else if (*s == '$' && 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("$@&",last_un_char) &&
993 isALPHA(*s) && s[1] && isALPHA(s[1])) {
998 if (keyword(tmpbuf, d - tmpbuf))
1001 if (un_char == last_un_char + 1)
1003 weight -= seen[un_char];
1008 if (weight >= 0) /* probably a character class */
1016 intuit_method(start,gv)
1020 char *s = start + (*start == '$');
1031 s = scan_word(s, 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))) {
1273 sprintf(tmpbuf, "In string, %s now must be written as \\%s",
1274 tokenbuf, tokenbuf);
1279 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1280 yylval.opval->op_private = OPpCONST_ENTERED;
1281 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1282 ((tokenbuf[0] == '$') ? SVt_PV
1283 : (tokenbuf[0] == '@') ? SVt_PVAV
1288 switch (lex_state) {
1290 case LEX_NORMAL: /* Some compilers will produce faster */
1291 case LEX_INTERPNORMAL: /* code if we comment these out. */
1297 yylval = nextval[nexttoke];
1299 lex_state = lex_defer;
1300 expect = lex_expect;
1301 lex_defer = LEX_NORMAL;
1303 return(nexttype[nexttoke]);
1305 case LEX_INTERPCASEMOD:
1307 if (bufptr != bufend && *bufptr != '\\')
1308 croak("panic: INTERPCASEMOD");
1310 if (bufptr == bufend || bufptr[1] == 'E') {
1313 oldmod = lex_casestack[--lex_casemods];
1314 lex_casestack[lex_casemods] = '\0';
1315 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1317 lex_state = LEX_INTERPCONCAT;
1321 if (bufptr != bufend)
1323 lex_state = LEX_INTERPCONCAT;
1328 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1329 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1330 if (strchr("LU", *s) &&
1331 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1333 lex_casestack[--lex_casemods] = '\0';
1336 if (lex_casemods > 10) {
1337 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1338 if (newlb != lex_casestack) {
1340 lex_casestack = newlb;
1343 lex_casestack[lex_casemods++] = *s;
1344 lex_casestack[lex_casemods] = '\0';
1345 lex_state = LEX_INTERPCONCAT;
1346 nextval[nexttoke].ival = 0;
1349 nextval[nexttoke].ival = OP_LCFIRST;
1351 nextval[nexttoke].ival = OP_UCFIRST;
1353 nextval[nexttoke].ival = OP_LC;
1355 nextval[nexttoke].ival = OP_UC;
1357 nextval[nexttoke].ival = OP_QUOTEMETA;
1359 croak("panic: yylex");
1371 case LEX_INTERPPUSH:
1372 return sublex_push();
1374 case LEX_INTERPSTART:
1375 if (bufptr == bufend)
1376 return sublex_done();
1378 lex_dojoin = (*bufptr == '@');
1379 lex_state = LEX_INTERPNORMAL;
1381 nextval[nexttoke].ival = 0;
1383 force_ident("\"", '$');
1384 nextval[nexttoke].ival = 0;
1386 nextval[nexttoke].ival = 0;
1388 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1397 case LEX_INTERPENDMAYBE:
1398 if (intuit_more(bufptr)) {
1399 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1407 lex_state = LEX_INTERPCONCAT;
1411 case LEX_INTERPCONCAT:
1414 croak("panic: INTERPCONCAT");
1416 if (bufptr == bufend)
1417 return sublex_done();
1419 if (SvIVX(linestr) == '\'') {
1420 SV *sv = newSVsv(linestr);
1423 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1427 s = scan_const(bufptr);
1429 lex_state = LEX_INTERPCASEMOD;
1431 lex_state = LEX_INTERPSTART;
1435 nextval[nexttoke] = yylval;
1448 lex_state = LEX_NORMAL;
1449 s = scan_formline(bufptr);
1456 oldoldbufptr = oldbufptr;
1459 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1465 croak("Unrecognized character \\%03o", *s & 255);
1468 goto fake_eof; /* emulate EOF on ^D or ^Z */
1474 yyerror("Missing right bracket");
1478 goto retry; /* ignore stray nulls */
1481 if (!in_eval && !preambled) {
1483 sv_setpv(linestr,incl_perldb());
1485 sv_catpv(linestr,";");
1487 while(AvFILL(preambleav) >= 0) {
1488 SV *tmpsv = av_shift(preambleav);
1489 sv_catsv(linestr, tmpsv);
1490 sv_catpv(linestr, ";");
1493 sv_free((SV*)preambleav);
1496 if (minus_n || minus_p) {
1497 sv_catpv(linestr, "LINE: while (<>) {");
1499 sv_catpv(linestr,"chomp;");
1501 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1503 GvIMPORTED_AV_on(gv);
1506 New(201, tmpbuf1, strlen(splitstr) * 2 + 20, char);
1507 if (strchr("/'\"", *splitstr)
1508 && strchr(splitstr + 1, *splitstr))
1509 sprintf(tmpbuf1, "@F=split(%s);", splitstr);
1512 s = "'~#\200\1'"; /* surely one char is unused...*/
1513 while (s[1] && strchr(splitstr, *s)) s++;
1515 sprintf(tmpbuf1, "@F=split(%s%c",
1516 "q" + (delim == '\''), delim);
1517 d = tmpbuf1 + strlen(tmpbuf1);
1518 for (s = splitstr; *s; ) {
1523 sprintf(d, "%c);", delim);
1525 sv_catpv(linestr,tmpbuf1);
1529 sv_catpv(linestr,"@F=split(' ');");
1532 sv_catpv(linestr, "\n");
1533 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1534 bufend = SvPVX(linestr) + SvCUR(linestr);
1535 if (perldb && curstash != debstash) {
1536 SV *sv = NEWSV(85,0);
1538 sv_upgrade(sv, SVt_PVMG);
1539 sv_setsv(sv,linestr);
1540 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1545 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1548 if (preprocess && !in_eval)
1549 (void)my_pclose(rsfp);
1550 else if ((PerlIO *)rsfp == PerlIO_stdin())
1551 PerlIO_clearerr(rsfp);
1553 (void)PerlIO_close(rsfp);
1556 if (!in_eval && (minus_n || minus_p)) {
1557 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1558 sv_catpv(linestr,";}");
1559 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1560 bufend = SvPVX(linestr) + SvCUR(linestr);
1561 minus_n = minus_p = 0;
1564 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1565 sv_setpv(linestr,"");
1566 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1569 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1572 /* Incest with pod. */
1573 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1574 sv_setpv(linestr, "");
1575 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1576 bufend = SvPVX(linestr) + SvCUR(linestr);
1581 } while (doextract);
1582 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1583 if (perldb && curstash != debstash) {
1584 SV *sv = NEWSV(85,0);
1586 sv_upgrade(sv, SVt_PVMG);
1587 sv_setsv(sv,linestr);
1588 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1590 bufend = SvPVX(linestr) + SvCUR(linestr);
1591 if (curcop->cop_line == 1) {
1592 while (s < bufend && isSPACE(*s))
1594 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1598 if (*s == '#' && *(s+1) == '!')
1600 #ifdef ALTERNATE_SHEBANG
1602 static char as[] = ALTERNATE_SHEBANG;
1603 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1604 d = s + (sizeof(as) - 1);
1606 #endif /* ALTERNATE_SHEBANG */
1615 while (*d && !isSPACE(*d))
1619 #ifdef ARG_ZERO_IS_SCRIPT
1620 if (ipathend > ipath) {
1622 * HP-UX (at least) sets argv[0] to the script name,
1623 * which makes $^X incorrect. And Digital UNIX and Linux,
1624 * at least, set argv[0] to the basename of the Perl
1625 * interpreter. So, having found "#!", we'll set it right.
1627 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1628 assert(SvPOK(x) || SvGMAGICAL(x));
1629 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1630 sv_setpvn(x, ipath, ipathend - ipath);
1633 TAINT_NOT; /* $^X is always tainted, but that's OK */
1635 #endif /* ARG_ZERO_IS_SCRIPT */
1640 d = instr(s,"perl -");
1642 d = instr(s,"perl");
1643 #ifdef ALTERNATE_SHEBANG
1645 * If the ALTERNATE_SHEBANG on this system starts with a
1646 * character that can be part of a Perl expression, then if
1647 * we see it but not "perl", we're probably looking at the
1648 * start of Perl code, not a request to hand off to some
1649 * other interpreter. Similarly, if "perl" is there, but
1650 * not in the first 'word' of the line, we assume the line
1651 * contains the start of the Perl program.
1653 if (d && *s != '#') {
1655 while (*c && !strchr("; \t\r\n\f\v#", *c))
1658 d = Nullch; /* "perl" not in first word; ignore */
1660 *s = '#'; /* Don't try to parse shebang line */
1662 #endif /* ALTERNATE_SHEBANG */
1667 !instr(s,"indir") &&
1668 instr(origargv[0],"perl"))
1674 while (s < bufend && isSPACE(*s))
1677 Newz(899,newargv,origargc+3,char*);
1679 while (s < bufend && !isSPACE(*s))
1682 Copy(origargv+1, newargv+2, origargc+1, char*);
1687 execv(ipath, newargv);
1688 croak("Can't exec %s", ipath);
1691 int oldpdb = perldb;
1695 while (*d && !isSPACE(*d)) d++;
1696 while (*d == ' ' || *d == '\t') d++;
1699 while (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, TRUE);
1850 force_ident(tokenbuf, '*');
1863 if (expect == XOPERATOR) {
1868 s = scan_ident(s, bufend, 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, FALSE, &len);
1959 while (d < bufend && (*d == ' ' || *d == '\t'))
1962 char minus = (tokenbuf[0] == '-');
1964 (keyword(tokenbuf + 1, len) ||
1965 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1966 perl_get_cv(tokenbuf + 1, FALSE) ))
1967 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1968 tokenbuf + !minus, tokenbuf + !minus);
1969 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1976 lex_brackstack[lex_brackets++] = XSTATE;
1980 lex_brackstack[lex_brackets++] = XOPERATOR;
1985 if (oldoldbufptr == last_lop)
1986 lex_brackstack[lex_brackets++] = XTERM;
1988 lex_brackstack[lex_brackets++] = XOPERATOR;
1991 OPERATOR(HASHBRACK);
1993 for (t = s; t < bufend && isALNUM(*t); t++) ;
1995 else if (*s == '\'' || *s == '"') {
2002 while (t < bufend && isSPACE(*t))
2004 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2005 OPERATOR(HASHBRACK);
2009 lex_brackstack[lex_brackets-1] = XSTATE;
2015 yylval.ival = curcop->cop_line;
2016 if (isSPACE(*s) || *s == '#')
2017 copline = NOLINE; /* invalidate current command line number */
2022 if (lex_brackets <= 0)
2023 yyerror("Unmatched right bracket");
2025 expect = (expectation)lex_brackstack[--lex_brackets];
2026 if (lex_brackets < lex_formbrack)
2028 if (lex_state == LEX_INTERPNORMAL) {
2029 if (lex_brackets == 0) {
2030 if (lex_fakebrack) {
2031 lex_state = LEX_INTERPEND;
2033 return yylex(); /* ignore fake brackets */
2035 if (*s == '-' && s[1] == '>')
2036 lex_state = LEX_INTERPENDMAYBE;
2037 else if (*s != '[' && *s != '{')
2038 lex_state = LEX_INTERPEND;
2041 if (lex_brackets < lex_fakebrack) {
2044 return yylex(); /* ignore fake brackets */
2054 if (expect == XOPERATOR) {
2055 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2063 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
2066 force_ident(tokenbuf, '&');
2070 yylval.ival = (OPpENTERSUB_AMPER<<8);
2089 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2090 warn("Reversed %c= operator",(int)tmp);
2092 if (expect == XSTATE && isALPHA(tmp) &&
2093 (s == linestart+1 || s[-2] == '\n') )
2095 if (in_eval && !rsfp) {
2100 if (strnEQ(s,"=cut",4)) {
2117 if (lex_brackets < lex_formbrack) {
2119 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2120 if (*t == '\n' || *t == '#') {
2138 if (expect != XOPERATOR) {
2139 if (s[1] != '<' && !strchr(s,'>'))
2142 s = scan_heredoc(s);
2144 s = scan_inputsymbol(s);
2145 TERM(sublex_start());
2150 SHop(OP_LEFT_SHIFT);
2164 SHop(OP_RIGHT_SHIFT);
2173 if (expect == XOPERATOR) {
2174 if (lex_formbrack && lex_brackets == lex_formbrack) {
2177 return ','; /* grandfather non-comma-format format */
2181 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2182 if (expect == XOPERATOR)
2183 no_op("Array length", bufptr);
2185 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2189 pending_ident = '#';
2193 if (expect == XOPERATOR)
2194 no_op("Scalar", bufptr);
2196 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2199 yyerror("Final $ should be \\$ or $name");
2203 /* This kludge not intended to be bulletproof. */
2204 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2205 yylval.opval = newSVOP(OP_CONST, 0,
2206 newSViv((IV)compiling.cop_arybase));
2207 yylval.opval->op_private = OPpCONST_ARYBASE;
2212 if (lex_state == LEX_NORMAL)
2215 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2221 isSPACE(*t) || isALNUM(*t) || *t == '$';
2224 bufptr = skipspace(bufptr);
2225 while (t < bufend && *t != ']')
2227 warn("Multidimensional syntax %.*s not supported",
2228 (t - bufptr) + 1, bufptr);
2232 else if (*s == '{') {
2234 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2235 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2239 for (t++; isSPACE(*t); t++) ;
2240 if (isIDFIRST(*t)) {
2241 t = scan_word(t, tmpbuf, TRUE, &len);
2242 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2243 warn("You need to quote \"%s\"", tmpbuf);
2250 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2251 bool islop = (last_lop == oldoldbufptr);
2252 if (!islop || last_lop_op == OP_GREPSTART)
2254 else if (strchr("$@\"'`q", *s))
2255 expect = XTERM; /* e.g. print $fh "foo" */
2256 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2257 expect = XTERM; /* e.g. print $fh &sub */
2258 else if (isIDFIRST(*s)) {
2260 scan_word(s, tmpbuf, TRUE, &len);
2261 if (keyword(tmpbuf, len))
2262 expect = XTERM; /* e.g. print $fh length() */
2264 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2265 if (gv && GvCVu(gv))
2266 expect = XTERM; /* e.g. print $fh subr() */
2269 else if (isDIGIT(*s))
2270 expect = XTERM; /* e.g. print $fh 3 */
2271 else if (*s == '.' && isDIGIT(s[1]))
2272 expect = XTERM; /* e.g. print $fh .3 */
2273 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2274 expect = XTERM; /* e.g. print $fh -1 */
2275 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2276 expect = XTERM; /* print $fh <<"EOF" */
2278 pending_ident = '$';
2282 if (expect == XOPERATOR)
2285 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2288 yyerror("Final @ should be \\@ or @name");
2291 if (lex_state == LEX_NORMAL)
2293 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2297 /* Warn about @ where they meant $. */
2299 if (*s == '[' || *s == '{') {
2301 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2303 if (*t == '}' || *t == ']') {
2305 bufptr = skipspace(bufptr);
2306 warn("Scalar value %.*s better written as $%.*s",
2307 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2312 pending_ident = '@';
2315 case '/': /* may either be division or pattern */
2316 case '?': /* may either be conditional or pattern */
2317 if (expect != XOPERATOR) {
2320 TERM(sublex_start());
2328 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2329 (s == linestart || s[-1] == '\n') ) {
2334 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2340 yylval.ival = OPf_SPECIAL;
2346 if (expect != XOPERATOR)
2351 case '0': case '1': case '2': case '3': case '4':
2352 case '5': case '6': case '7': case '8': case '9':
2354 if (expect == XOPERATOR)
2360 if (expect == XOPERATOR) {
2361 if (lex_formbrack && lex_brackets == lex_formbrack) {
2364 return ','; /* grandfather non-comma-format format */
2370 missingterm((char*)0);
2371 yylval.ival = OP_CONST;
2372 TERM(sublex_start());
2376 if (expect == XOPERATOR) {
2377 if (lex_formbrack && lex_brackets == lex_formbrack) {
2380 return ','; /* grandfather non-comma-format format */
2386 missingterm((char*)0);
2387 yylval.ival = OP_CONST;
2388 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2389 if (*d == '$' || *d == '@' || *d == '\\') {
2390 yylval.ival = OP_STRINGIFY;
2394 TERM(sublex_start());
2398 if (expect == XOPERATOR)
2399 no_op("Backticks",s);
2401 missingterm((char*)0);
2402 yylval.ival = OP_BACKTICK;
2404 TERM(sublex_start());
2408 if (dowarn && lex_inwhat && isDIGIT(*s))
2409 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2410 if (expect == XOPERATOR)
2411 no_op("Backslash",s);
2415 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2451 s = scan_word(s, tokenbuf, FALSE, &len);
2453 /* Some keywords can be followed by any delimiter, including ':' */
2454 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2455 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2456 (tokenbuf[0] == 'q' &&
2457 strchr("qwx", tokenbuf[1]))));
2459 /* x::* is just a word, unless x is "CORE" */
2460 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2464 while (d < bufend && isSPACE(*d))
2465 d++; /* no comments skipped here, or s### is misparsed */
2467 /* Is this a label? */
2468 if (!tmp && expect == XSTATE
2469 && d < bufend && *d == ':' && *(d + 1) != ':') {
2471 yylval.pval = savepv(tokenbuf);
2476 /* Check for keywords */
2477 tmp = keyword(tokenbuf, len);
2479 /* Is this a word before a => operator? */
2480 if (strnEQ(d,"=>",2)) {
2482 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2483 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2484 tokenbuf, tokenbuf);
2485 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2486 yylval.opval->op_private = OPpCONST_BARE;
2490 if (tmp < 0) { /* second-class keyword? */
2492 if (expect != XOPERATOR &&
2493 (*s != ':' || s[1] != ':') &&
2494 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2506 default: /* not a keyword */
2509 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2511 /* Get the rest if it looks like a package qualifier */
2513 if (*s == '\'' || *s == ':' && s[1] == ':') {
2514 s = scan_word(s, tokenbuf + len, TRUE, &len);
2516 croak("Bad name after %s::", tokenbuf);
2519 if (expect == XOPERATOR) {
2520 if (bufptr == linestart) {
2526 no_op("Bareword",s);
2529 /* Look for a subroutine with this name in current package. */
2531 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2533 /* Presume this is going to be a bareword of some sort. */
2536 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2537 yylval.opval->op_private = OPpCONST_BARE;
2539 /* See if it's the indirect object for a list operator. */
2542 oldoldbufptr < bufptr &&
2543 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2544 /* NO SKIPSPACE BEFORE HERE! */
2546 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2548 bool immediate_paren = *s == '(';
2550 /* (Now we can afford to cross potential line boundary.) */
2553 /* Two barewords in a row may indicate method call. */
2555 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2558 /* If not a declared subroutine, it's an indirect object. */
2559 /* (But it's an indir obj regardless for sort.) */
2561 if ((last_lop_op == OP_SORT ||
2562 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2563 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2564 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2569 /* If followed by a paren, it's certainly a subroutine. */
2575 nextval[nexttoke].opval = yylval.opval;
2582 /* If followed by var or block, call it a method (unless sub) */
2584 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2585 last_lop = oldbufptr;
2586 last_lop_op = OP_METHOD;
2590 /* If followed by a bareword, see if it looks like indir obj. */
2592 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2595 /* Not a method, so call it a subroutine (if defined) */
2597 if (gv && GvCVu(gv)) {
2600 nextval[nexttoke].opval = yylval.opval;
2606 if (lastchar == '-')
2607 warn("Ambiguous use of -%s resolved as -&%s()",
2608 tokenbuf, tokenbuf);
2609 last_lop = oldbufptr;
2610 last_lop_op = OP_ENTERSUB;
2611 /* Check for a constant sub */
2613 SV *sv = cv_const_sv(cv);
2615 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2616 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2617 yylval.opval->op_private = 0;
2622 /* Resolve to GV now. */
2623 op_free(yylval.opval);
2624 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2625 /* Is there a prototype? */
2628 char *proto = SvPV((SV*)cv, len);
2631 if (strEQ(proto, "$"))
2633 if (*proto == '&' && *s == '{') {
2634 sv_setpv(subname,"__ANON__");
2638 nextval[nexttoke].opval = yylval.opval;
2644 if (hints & HINT_STRICT_SUBS &&
2647 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2648 last_lop_op != OP_ACCEPT &&
2649 last_lop_op != OP_PIPE_OP &&
2650 last_lop_op != OP_SOCKPAIR)
2653 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2658 /* Call it a bare word */
2662 if (lastchar != '-') {
2663 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2665 warn(warn_reserved, tokenbuf);
2668 if (lastchar && strchr("*%&", lastchar)) {
2669 warn("Operator or semicolon missing before %c%s",
2670 lastchar, tokenbuf);
2671 warn("Ambiguous use of %c resolved as operator %c",
2672 lastchar, lastchar);
2679 if (tokenbuf[2] == 'L')
2680 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2682 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2683 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2686 case KEY___PACKAGE__:
2687 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2689 ? newSVsv(curstname)
2698 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2700 char *pname = "main";
2701 if (tokenbuf[2] == 'D')
2702 pname = HvNAME(curstash ? curstash : defstash);
2703 sprintf(dname,"%s::DATA", pname);
2704 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
2707 GvIOp(gv) = newIO();
2708 IoIFP(GvIOp(gv)) = rsfp;
2709 #if defined(HAS_FCNTL) && defined(F_SETFD)
2711 int fd = PerlIO_fileno(rsfp);
2712 fcntl(fd,F_SETFD,fd >= 3);
2715 /* Mark this internal pseudo-handle as clean */
2716 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2718 IoTYPE(GvIOp(gv)) = '|';
2719 else if ((PerlIO*)rsfp == PerlIO_stdin())
2720 IoTYPE(GvIOp(gv)) = '-';
2722 IoTYPE(GvIOp(gv)) = '<';
2732 if (expect == XSTATE) {
2739 if (*s == ':' && s[1] == ':') {
2742 s = scan_word(s, tokenbuf, FALSE, &len);
2743 tmp = keyword(tokenbuf, len);
2757 LOP(OP_ACCEPT,XTERM);
2763 LOP(OP_ATAN2,XTERM);
2772 LOP(OP_BLESS,XTERM);
2781 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2801 LOP(OP_CRYPT,XTERM);
2805 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2806 if (*d != '0' && isDIGIT(*d))
2807 yywarn("chmod: mode argument is missing initial 0");
2809 LOP(OP_CHMOD,XTERM);
2812 LOP(OP_CHOWN,XTERM);
2815 LOP(OP_CONNECT,XTERM);
2831 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2835 hints |= HINT_BLOCK_SCOPE;
2845 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2846 LOP(OP_DBMOPEN,XTERM);
2852 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2859 yylval.ival = curcop->cop_line;
2873 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2874 UNIBRACK(OP_ENTEREVAL);
2889 case KEY_endhostent:
2895 case KEY_endservent:
2898 case KEY_endprotoent:
2909 yylval.ival = curcop->cop_line;
2911 if (isIDFIRST(*s)) {
2913 if ((bufend - p) >= 3 &&
2914 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2918 croak("Missing $ on loop variable");
2923 LOP(OP_FORMLINE,XTERM);
2929 LOP(OP_FCNTL,XTERM);
2935 LOP(OP_FLOCK,XTERM);
2944 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2947 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2962 case KEY_getpriority:
2963 LOP(OP_GETPRIORITY,XTERM);
2965 case KEY_getprotobyname:
2968 case KEY_getprotobynumber:
2969 LOP(OP_GPBYNUMBER,XTERM);
2971 case KEY_getprotoent:
2983 case KEY_getpeername:
2984 UNI(OP_GETPEERNAME);
2986 case KEY_gethostbyname:
2989 case KEY_gethostbyaddr:
2990 LOP(OP_GHBYADDR,XTERM);
2992 case KEY_gethostent:
2995 case KEY_getnetbyname:
2998 case KEY_getnetbyaddr:
2999 LOP(OP_GNBYADDR,XTERM);
3004 case KEY_getservbyname:
3005 LOP(OP_GSBYNAME,XTERM);
3007 case KEY_getservbyport:
3008 LOP(OP_GSBYPORT,XTERM);
3010 case KEY_getservent:
3013 case KEY_getsockname:
3014 UNI(OP_GETSOCKNAME);
3016 case KEY_getsockopt:
3017 LOP(OP_GSOCKOPT,XTERM);
3039 yylval.ival = curcop->cop_line;
3043 LOP(OP_INDEX,XTERM);
3049 LOP(OP_IOCTL,XTERM);
3061 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3092 LOP(OP_LISTEN,XTERM);
3099 TERM(sublex_start());
3102 LOP(OP_MAPSTART,XREF);
3105 LOP(OP_MKDIR,XTERM);
3108 LOP(OP_MSGCTL,XTERM);
3111 LOP(OP_MSGGET,XTERM);
3114 LOP(OP_MSGRCV,XTERM);
3117 LOP(OP_MSGSND,XTERM);
3124 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3131 if (expect != XSTATE)
3132 yyerror("\"no\" not allowed in expression");
3133 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3134 s = force_version(s);
3143 if (isIDFIRST(*s)) {
3145 for (d = s; isALNUM(*d); d++) ;
3147 if (strchr("|&*+-=!?:.", *t))
3148 warn("Precedence problem: open %.*s should be open(%.*s)",
3154 yylval.ival = OP_OR;
3164 LOP(OP_OPEN_DIR,XTERM);
3167 checkcomma(s,tokenbuf,"filehandle");
3171 checkcomma(s,tokenbuf,"filehandle");
3190 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3194 LOP(OP_PIPE_OP,XTERM);
3199 missingterm((char*)0);
3200 yylval.ival = OP_CONST;
3201 TERM(sublex_start());
3209 missingterm((char*)0);
3210 if (dowarn && SvLEN(lex_stuff)) {
3211 d = SvPV_force(lex_stuff, len);
3212 for (; len; --len, ++d) {
3214 warn("Possible attempt to separate words with commas");
3218 warn("Possible attempt to put comments in qw() list");
3224 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3228 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3231 yylval.ival = OP_SPLIT;
3235 last_lop = oldbufptr;
3236 last_lop_op = OP_SPLIT;
3242 missingterm((char*)0);
3243 yylval.ival = OP_STRINGIFY;
3244 if (SvIVX(lex_stuff) == '\'')
3245 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3246 TERM(sublex_start());
3251 missingterm((char*)0);
3252 yylval.ival = OP_BACKTICK;
3254 TERM(sublex_start());
3261 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3262 if (isIDFIRST(*tokenbuf))
3263 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3265 yyerror("<> should be quotes");
3272 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3276 LOP(OP_RENAME,XTERM);
3285 LOP(OP_RINDEX,XTERM);
3308 LOP(OP_REVERSE,XTERM);
3319 TERM(sublex_start());
3321 TOKEN(1); /* force error */
3330 LOP(OP_SELECT,XTERM);
3336 LOP(OP_SEMCTL,XTERM);
3339 LOP(OP_SEMGET,XTERM);
3342 LOP(OP_SEMOP,XTERM);
3348 LOP(OP_SETPGRP,XTERM);
3350 case KEY_setpriority:
3351 LOP(OP_SETPRIORITY,XTERM);
3353 case KEY_sethostent:
3359 case KEY_setservent:
3362 case KEY_setprotoent:
3372 LOP(OP_SEEKDIR,XTERM);
3374 case KEY_setsockopt:
3375 LOP(OP_SSOCKOPT,XTERM);
3381 LOP(OP_SHMCTL,XTERM);
3384 LOP(OP_SHMGET,XTERM);
3387 LOP(OP_SHMREAD,XTERM);
3390 LOP(OP_SHMWRITE,XTERM);
3393 LOP(OP_SHUTDOWN,XTERM);
3402 LOP(OP_SOCKET,XTERM);
3404 case KEY_socketpair:
3405 LOP(OP_SOCKPAIR,XTERM);
3408 checkcomma(s,tokenbuf,"subroutine name");
3410 if (*s == ';' || *s == ')') /* probably a close */
3411 croak("sort is now a reserved word");
3413 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3417 LOP(OP_SPLIT,XTERM);
3420 LOP(OP_SPRINTF,XTERM);
3423 LOP(OP_SPLICE,XTERM);
3439 LOP(OP_SUBSTR,XTERM);
3446 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3449 d = scan_word(s, tmpbuf, TRUE, &len);
3450 if (strchr(tmpbuf, ':'))
3451 sv_setpv(subname, tmpbuf);
3453 sv_setsv(subname,curstname);
3454 sv_catpvn(subname,"::",2);
3455 sv_catpvn(subname,tmpbuf,len);
3457 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3461 expect = XTERMBLOCK;
3462 sv_setpv(subname,"?");
3465 if (tmp == KEY_format) {
3468 lex_formbrack = lex_brackets + 1;
3472 /* Look for a prototype */
3479 SvREFCNT_dec(lex_stuff);
3481 croak("Prototype not terminated");
3484 d = SvPVX(lex_stuff);
3486 for (p = d; *p; ++p) {
3491 SvCUR(lex_stuff) = tmp;
3494 nextval[1] = nextval[0];
3495 nexttype[1] = nexttype[0];
3496 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3497 nexttype[0] = THING;
3498 if (nexttoke == 1) {
3499 lex_defer = lex_state;
3500 lex_expect = expect;
3501 lex_state = LEX_KNOWNEXT;
3506 if (*SvPV(subname,na) == '?') {
3507 sv_setpv(subname,"__ANON__");
3514 LOP(OP_SYSTEM,XREF);
3517 LOP(OP_SYMLINK,XTERM);
3520 LOP(OP_SYSCALL,XTERM);
3523 LOP(OP_SYSOPEN,XTERM);
3526 LOP(OP_SYSREAD,XTERM);
3529 LOP(OP_SYSWRITE,XTERM);
3533 TERM(sublex_start());
3554 LOP(OP_TRUNCATE,XTERM);
3566 yylval.ival = curcop->cop_line;
3570 yylval.ival = curcop->cop_line;
3574 LOP(OP_UNLINK,XTERM);
3580 LOP(OP_UNPACK,XTERM);
3583 LOP(OP_UTIME,XTERM);
3587 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3588 if (*d != '0' && isDIGIT(*d))
3589 yywarn("umask: argument is missing initial 0");
3594 LOP(OP_UNSHIFT,XTERM);
3597 if (expect != XSTATE)
3598 yyerror("\"use\" not allowed in expression");
3601 s = force_version(s);
3602 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3603 nextval[nexttoke].opval = Nullop;
3608 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3609 s = force_version(s);
3622 yylval.ival = curcop->cop_line;
3626 hints |= HINT_BLOCK_SCOPE;
3633 LOP(OP_WAITPID,XTERM);
3639 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3643 if (expect == XOPERATOR)
3649 yylval.ival = OP_XOR;
3654 TERM(sublex_start());
3667 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3668 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3669 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3670 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3671 if (strEQ(d,"__END__")) return KEY___END__;
3675 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3680 if (strEQ(d,"and")) return -KEY_and;
3681 if (strEQ(d,"abs")) return -KEY_abs;
3684 if (strEQ(d,"alarm")) return -KEY_alarm;
3685 if (strEQ(d,"atan2")) return -KEY_atan2;
3688 if (strEQ(d,"accept")) return -KEY_accept;
3693 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3696 if (strEQ(d,"bless")) return -KEY_bless;
3697 if (strEQ(d,"bind")) return -KEY_bind;
3698 if (strEQ(d,"binmode")) return -KEY_binmode;
3701 if (strEQ(d,"CORE")) return -KEY_CORE;
3706 if (strEQ(d,"cmp")) return -KEY_cmp;
3707 if (strEQ(d,"chr")) return -KEY_chr;
3708 if (strEQ(d,"cos")) return -KEY_cos;
3711 if (strEQ(d,"chop")) return KEY_chop;
3714 if (strEQ(d,"close")) return -KEY_close;
3715 if (strEQ(d,"chdir")) return -KEY_chdir;
3716 if (strEQ(d,"chomp")) return KEY_chomp;
3717 if (strEQ(d,"chmod")) return -KEY_chmod;
3718 if (strEQ(d,"chown")) return -KEY_chown;
3719 if (strEQ(d,"crypt")) return -KEY_crypt;
3722 if (strEQ(d,"chroot")) return -KEY_chroot;
3723 if (strEQ(d,"caller")) return -KEY_caller;
3726 if (strEQ(d,"connect")) return -KEY_connect;
3729 if (strEQ(d,"closedir")) return -KEY_closedir;
3730 if (strEQ(d,"continue")) return -KEY_continue;
3735 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3740 if (strEQ(d,"do")) return KEY_do;
3743 if (strEQ(d,"die")) return -KEY_die;
3746 if (strEQ(d,"dump")) return -KEY_dump;
3749 if (strEQ(d,"delete")) return KEY_delete;
3752 if (strEQ(d,"defined")) return KEY_defined;
3753 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3756 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3761 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3762 if (strEQ(d,"END")) return KEY_END;
3767 if (strEQ(d,"eq")) return -KEY_eq;
3770 if (strEQ(d,"eof")) return -KEY_eof;
3771 if (strEQ(d,"exp")) return -KEY_exp;
3774 if (strEQ(d,"else")) return KEY_else;
3775 if (strEQ(d,"exit")) return -KEY_exit;
3776 if (strEQ(d,"eval")) return KEY_eval;
3777 if (strEQ(d,"exec")) return -KEY_exec;
3778 if (strEQ(d,"each")) return KEY_each;
3781 if (strEQ(d,"elsif")) return KEY_elsif;
3784 if (strEQ(d,"exists")) return KEY_exists;
3785 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3788 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3789 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3792 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3795 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3796 if (strEQ(d,"endservent")) return -KEY_endservent;
3799 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3806 if (strEQ(d,"for")) return KEY_for;
3809 if (strEQ(d,"fork")) return -KEY_fork;
3812 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3813 if (strEQ(d,"flock")) return -KEY_flock;
3816 if (strEQ(d,"format")) return KEY_format;
3817 if (strEQ(d,"fileno")) return -KEY_fileno;
3820 if (strEQ(d,"foreach")) return KEY_foreach;
3823 if (strEQ(d,"formline")) return -KEY_formline;
3829 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3830 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3834 if (strnEQ(d,"get",3)) {
3839 if (strEQ(d,"ppid")) return -KEY_getppid;
3840 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3843 if (strEQ(d,"pwent")) return -KEY_getpwent;
3844 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3845 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3848 if (strEQ(d,"peername")) return -KEY_getpeername;
3849 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3850 if (strEQ(d,"priority")) return -KEY_getpriority;
3853 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3856 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3860 else if (*d == 'h') {
3861 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3862 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3863 if (strEQ(d,"hostent")) return -KEY_gethostent;
3865 else if (*d == 'n') {
3866 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3867 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3868 if (strEQ(d,"netent")) return -KEY_getnetent;
3870 else if (*d == 's') {
3871 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3872 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3873 if (strEQ(d,"servent")) return -KEY_getservent;
3874 if (strEQ(d,"sockname")) return -KEY_getsockname;
3875 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3877 else if (*d == 'g') {
3878 if (strEQ(d,"grent")) return -KEY_getgrent;
3879 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3880 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3882 else if (*d == 'l') {
3883 if (strEQ(d,"login")) return -KEY_getlogin;
3885 else if (strEQ(d,"c")) return -KEY_getc;
3890 if (strEQ(d,"gt")) return -KEY_gt;
3891 if (strEQ(d,"ge")) return -KEY_ge;
3894 if (strEQ(d,"grep")) return KEY_grep;
3895 if (strEQ(d,"goto")) return KEY_goto;
3896 if (strEQ(d,"glob")) return -KEY_glob;
3899 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3904 if (strEQ(d,"hex")) return -KEY_hex;
3909 if (strEQ(d,"if")) return KEY_if;
3912 if (strEQ(d,"int")) return -KEY_int;
3915 if (strEQ(d,"index")) return -KEY_index;
3916 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3921 if (strEQ(d,"join")) return -KEY_join;
3925 if (strEQ(d,"keys")) return KEY_keys;
3926 if (strEQ(d,"kill")) return -KEY_kill;
3931 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3932 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3938 if (strEQ(d,"lt")) return -KEY_lt;
3939 if (strEQ(d,"le")) return -KEY_le;
3940 if (strEQ(d,"lc")) return -KEY_lc;
3943 if (strEQ(d,"log")) return -KEY_log;
3946 if (strEQ(d,"last")) return KEY_last;
3947 if (strEQ(d,"link")) return -KEY_link;
3950 if (strEQ(d,"local")) return KEY_local;
3951 if (strEQ(d,"lstat")) return -KEY_lstat;
3954 if (strEQ(d,"length")) return -KEY_length;
3955 if (strEQ(d,"listen")) return -KEY_listen;
3958 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3961 if (strEQ(d,"localtime")) return -KEY_localtime;
3967 case 1: return KEY_m;
3969 if (strEQ(d,"my")) return KEY_my;
3972 if (strEQ(d,"map")) return KEY_map;
3975 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3978 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3979 if (strEQ(d,"msgget")) return -KEY_msgget;
3980 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3981 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3986 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3989 if (strEQ(d,"next")) return KEY_next;
3990 if (strEQ(d,"ne")) return -KEY_ne;
3991 if (strEQ(d,"not")) return -KEY_not;
3992 if (strEQ(d,"no")) return KEY_no;
3997 if (strEQ(d,"or")) return -KEY_or;
4000 if (strEQ(d,"ord")) return -KEY_ord;
4001 if (strEQ(d,"oct")) return -KEY_oct;
4004 if (strEQ(d,"open")) return -KEY_open;
4007 if (strEQ(d,"opendir")) return -KEY_opendir;
4014 if (strEQ(d,"pop")) return KEY_pop;
4015 if (strEQ(d,"pos")) return KEY_pos;
4018 if (strEQ(d,"push")) return KEY_push;
4019 if (strEQ(d,"pack")) return -KEY_pack;
4020 if (strEQ(d,"pipe")) return -KEY_pipe;
4023 if (strEQ(d,"print")) return KEY_print;
4026 if (strEQ(d,"printf")) return KEY_printf;
4029 if (strEQ(d,"package")) return KEY_package;
4032 if (strEQ(d,"prototype")) return KEY_prototype;
4037 if (strEQ(d,"q")) return KEY_q;
4038 if (strEQ(d,"qq")) return KEY_qq;
4039 if (strEQ(d,"qw")) return KEY_qw;
4040 if (strEQ(d,"qx")) return KEY_qx;
4042 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4047 if (strEQ(d,"ref")) return -KEY_ref;
4050 if (strEQ(d,"read")) return -KEY_read;
4051 if (strEQ(d,"rand")) return -KEY_rand;
4052 if (strEQ(d,"recv")) return -KEY_recv;
4053 if (strEQ(d,"redo")) return KEY_redo;
4056 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4057 if (strEQ(d,"reset")) return -KEY_reset;
4060 if (strEQ(d,"return")) return KEY_return;
4061 if (strEQ(d,"rename")) return -KEY_rename;
4062 if (strEQ(d,"rindex")) return -KEY_rindex;
4065 if (strEQ(d,"require")) return -KEY_require;
4066 if (strEQ(d,"reverse")) return -KEY_reverse;
4067 if (strEQ(d,"readdir")) return -KEY_readdir;
4070 if (strEQ(d,"readlink")) return -KEY_readlink;
4071 if (strEQ(d,"readline")) return -KEY_readline;
4072 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4075 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4081 case 0: return KEY_s;
4083 if (strEQ(d,"scalar")) return KEY_scalar;
4088 if (strEQ(d,"seek")) return -KEY_seek;
4089 if (strEQ(d,"send")) return -KEY_send;
4092 if (strEQ(d,"semop")) return -KEY_semop;
4095 if (strEQ(d,"select")) return -KEY_select;
4096 if (strEQ(d,"semctl")) return -KEY_semctl;
4097 if (strEQ(d,"semget")) return -KEY_semget;
4100 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4101 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4104 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4105 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4108 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4111 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4112 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4113 if (strEQ(d,"setservent")) return -KEY_setservent;
4116 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4117 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4124 if (strEQ(d,"shift")) return KEY_shift;
4127 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4128 if (strEQ(d,"shmget")) return -KEY_shmget;
4131 if (strEQ(d,"shmread")) return -KEY_shmread;
4134 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4135 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4140 if (strEQ(d,"sin")) return -KEY_sin;
4143 if (strEQ(d,"sleep")) return -KEY_sleep;
4146 if (strEQ(d,"sort")) return KEY_sort;
4147 if (strEQ(d,"socket")) return -KEY_socket;
4148 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4151 if (strEQ(d,"split")) return KEY_split;
4152 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4153 if (strEQ(d,"splice")) return KEY_splice;
4156 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4159 if (strEQ(d,"srand")) return -KEY_srand;
4162 if (strEQ(d,"stat")) return -KEY_stat;
4163 if (strEQ(d,"study")) return KEY_study;
4166 if (strEQ(d,"substr")) return -KEY_substr;
4167 if (strEQ(d,"sub")) return KEY_sub;
4172 if (strEQ(d,"system")) return -KEY_system;
4175 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4176 if (strEQ(d,"sysread")) return -KEY_sysread;
4177 if (strEQ(d,"symlink")) return -KEY_symlink;
4178 if (strEQ(d,"syscall")) return -KEY_syscall;
4181 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4190 if (strEQ(d,"tr")) return KEY_tr;
4193 if (strEQ(d,"tie")) return KEY_tie;
4196 if (strEQ(d,"tell")) return -KEY_tell;
4197 if (strEQ(d,"tied")) return KEY_tied;
4198 if (strEQ(d,"time")) return -KEY_time;
4201 if (strEQ(d,"times")) return -KEY_times;
4204 if (strEQ(d,"telldir")) return -KEY_telldir;
4207 if (strEQ(d,"truncate")) return -KEY_truncate;
4214 if (strEQ(d,"uc")) return -KEY_uc;
4217 if (strEQ(d,"use")) return KEY_use;
4220 if (strEQ(d,"undef")) return KEY_undef;
4221 if (strEQ(d,"until")) return KEY_until;
4222 if (strEQ(d,"untie")) return KEY_untie;
4223 if (strEQ(d,"utime")) return -KEY_utime;
4224 if (strEQ(d,"umask")) return -KEY_umask;
4227 if (strEQ(d,"unless")) return KEY_unless;
4228 if (strEQ(d,"unpack")) return -KEY_unpack;
4229 if (strEQ(d,"unlink")) return -KEY_unlink;
4232 if (strEQ(d,"unshift")) return KEY_unshift;
4233 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4238 if (strEQ(d,"values")) return -KEY_values;
4239 if (strEQ(d,"vec")) return -KEY_vec;
4244 if (strEQ(d,"warn")) return -KEY_warn;
4245 if (strEQ(d,"wait")) return -KEY_wait;
4248 if (strEQ(d,"while")) return KEY_while;
4249 if (strEQ(d,"write")) return -KEY_write;
4252 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4255 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4260 if (len == 1) return -KEY_x;
4261 if (strEQ(d,"xor")) return -KEY_xor;
4264 if (len == 1) return KEY_y;
4273 checkcomma(s,name,what)
4280 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4282 for (w = s+2; *w && level; w++) {
4289 for (; *w && isSPACE(*w); w++) ;
4290 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4291 warn("%s (...) interpreted as function",name);
4293 while (s < bufend && isSPACE(*s))
4297 while (s < bufend && isSPACE(*s))
4299 if (isIDFIRST(*s)) {
4303 while (s < bufend && isSPACE(*s))
4308 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4312 croak("No comma allowed after %s", what);
4318 scan_word(s, dest, allow_package, slp)
4324 register char *d = dest;
4328 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4333 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4346 scan_ident(s,send,dest,ck_uni)
4348 register char *send;
4356 if (lex_brackets == 0)
4369 else if (*s == '\'' && isIDFIRST(s[1])) {
4374 else if (*s == ':' && s[1] == ':') {
4385 if (lex_state != LEX_NORMAL)
4386 lex_state = LEX_INTERPENDMAYBE;
4389 if (*s == '$' && s[1] &&
4390 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4392 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4393 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4406 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4411 if (isSPACE(s[-1])) {
4414 if (ch != ' ' && ch != '\t') {
4420 if (isIDFIRST(*d)) {
4422 while (isALNUM(*s) || *s == ':')
4425 while (s < send && (*s == ' ' || *s == '\t')) s++;
4426 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4427 if (dowarn && keyword(dest, d - dest)) {
4428 char *brack = *s == '[' ? "[...]" : "{...}";
4429 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4430 funny, dest, brack, funny, dest, brack);
4432 lex_fakebrack = lex_brackets+1;
4434 lex_brackstack[lex_brackets++] = XOPERATOR;
4440 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4441 lex_state = LEX_INTERPEND;
4445 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4446 warn("Ambiguous use of %c{%s} resolved to %c%s",
4447 funny, dest, funny, dest);
4450 s = bracket; /* let the parser handle it */
4454 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4455 lex_state = LEX_INTERPEND;
4459 void pmflag(pmfl,ch)
4466 *pmfl |= PMf_GLOBAL;
4470 *pmfl |= PMf_MULTILINE;
4472 *pmfl |= PMf_SINGLELINE;
4474 *pmfl |= PMf_EXTENDED;
4484 s = scan_str(start);
4487 SvREFCNT_dec(lex_stuff);
4489 croak("Search pattern not terminated");
4492 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4493 if (multi_open == '?')
4494 pm->op_pmflags |= PMf_ONCE;
4495 while (*s && strchr("iogmsx", *s))
4496 pmflag(&pm->op_pmflags,*s++);
4497 pm->op_pmpermflags = pm->op_pmflags;
4500 yylval.ival = OP_MATCH;
4513 yylval.ival = OP_NULL;
4515 s = scan_str(start);
4519 SvREFCNT_dec(lex_stuff);
4521 croak("Substitution pattern not terminated");
4524 if (s[-1] == multi_open)
4527 first_start = multi_start;
4531 SvREFCNT_dec(lex_stuff);
4534 SvREFCNT_dec(lex_repl);
4536 croak("Substitution replacement not terminated");
4538 multi_start = first_start; /* so whole substitution is taken together */
4540 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4541 while (*s && strchr("iogmsex", *s)) {
4547 pmflag(&pm->op_pmflags,*s++);
4552 pm->op_pmflags |= PMf_EVAL;
4553 repl = newSVpv("",0);
4555 sv_catpv(repl, es ? "eval " : "do ");
4556 sv_catpvn(repl, "{ ", 2);
4557 sv_catsv(repl, lex_repl);
4558 sv_catpvn(repl, " };", 2);
4559 SvCOMPILED_on(repl);
4560 SvREFCNT_dec(lex_repl);
4564 pm->op_pmpermflags = pm->op_pmflags;
4566 yylval.ival = OP_SUBST;
4574 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4575 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4577 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4578 pm->op_pmflags |= PMf_SCANFIRST;
4579 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4580 pm->op_pmslen = SvCUR(pm->op_pmshort);
4582 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4583 if (pm->op_pmshort &&
4584 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4586 if (pm->op_pmflags & PMf_SCANFIRST) {
4587 SvREFCNT_dec(pm->op_pmshort);
4588 pm->op_pmshort = Nullsv;
4591 SvREFCNT_dec(pm->op_pmregexp->regmust);
4592 pm->op_pmregexp->regmust = Nullsv;
4596 /* promote the better string */
4597 if ((!pm->op_pmshort &&
4598 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4599 ((pm->op_pmflags & PMf_SCANFIRST) &&
4600 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4601 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4602 pm->op_pmshort = pm->op_pmregexp->regmust;
4603 pm->op_pmslen = SvCUR(pm->op_pmshort);
4604 pm->op_pmregexp->regmust = Nullsv;
4605 pm->op_pmflags |= PMf_SCANFIRST;
4621 yylval.ival = OP_NULL;
4623 s = scan_str(start);
4626 SvREFCNT_dec(lex_stuff);
4628 croak("Translation pattern not terminated");
4630 if (s[-1] == multi_open)
4636 SvREFCNT_dec(lex_stuff);
4639 SvREFCNT_dec(lex_repl);
4641 croak("Translation replacement not terminated");
4644 New(803,tbl,256,short);
4645 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4647 complement = delete = squash = 0;
4648 while (*s == 'c' || *s == 'd' || *s == 's') {
4650 complement = OPpTRANS_COMPLEMENT;
4652 delete = OPpTRANS_DELETE;
4654 squash = OPpTRANS_SQUASH;
4657 op->op_private = delete|squash|complement;
4660 yylval.ival = OP_TRANS;
4669 I32 op_type = OP_SCALAR;
4675 int outer = (rsfp && !lex_inwhat);
4681 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4682 if (*peek && strchr("`'\"",*peek)) {
4685 s = cpytill(d,s,bufend,term,&len);
4696 deprecate("bare << to mean <<\"\"");
4699 } /* assuming tokenbuf won't clobber */
4704 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4705 herewas = newSVpv(s,bufend-s);
4707 s--, herewas = newSVpv(s,d-s);
4708 s += SvCUR(herewas);
4710 tmpstr = NEWSV(87,80);
4711 sv_upgrade(tmpstr, SVt_PVIV);
4716 else if (term == '`') {
4717 op_type = OP_BACKTICK;
4718 SvIVX(tmpstr) = '\\';
4722 multi_start = curcop->cop_line;
4723 multi_open = multi_close = '<';
4727 while (s < bufend &&
4728 (*s != term || memNE(s,tokenbuf,len)) ) {
4733 curcop->cop_line = multi_start;
4734 missingterm(tokenbuf);
4736 sv_setpvn(tmpstr,d+1,s-d);
4738 sv_catpvn(herewas,s,bufend-s);
4739 sv_setsv(linestr,herewas);
4740 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4741 bufend = SvPVX(linestr) + SvCUR(linestr);
4744 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4745 while (s >= bufend) { /* multiple line string? */
4747 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4748 curcop->cop_line = multi_start;
4749 missingterm(tokenbuf);
4752 if (perldb && curstash != debstash) {
4753 SV *sv = NEWSV(88,0);
4755 sv_upgrade(sv, SVt_PVMG);
4756 sv_setsv(sv,linestr);
4757 av_store(GvAV(curcop->cop_filegv),
4758 (I32)curcop->cop_line,sv);
4760 bufend = SvPVX(linestr) + SvCUR(linestr);
4761 if (*s == term && memEQ(s,tokenbuf,len)) {
4764 sv_catsv(linestr,herewas);
4765 bufend = SvPVX(linestr) + SvCUR(linestr);
4769 sv_catsv(tmpstr,linestr);
4772 multi_end = curcop->cop_line;
4774 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4775 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4776 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4778 SvREFCNT_dec(herewas);
4780 yylval.ival = op_type;
4785 scan_inputsymbol(start)
4788 register char *s = start;
4793 s = cpytill(d, s+1, bufend, '>', &len);
4797 croak("Unterminated <> operator");
4799 if (*d == '$' && d[1]) d++;
4800 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4802 if (d - tokenbuf != len) {
4803 yylval.ival = OP_GLOB;
4805 s = scan_str(start);
4807 croak("Glob not terminated");
4813 (void)strcpy(d,"ARGV");
4816 if (tmp = pad_findmy(d)) {
4817 OP *op = newOP(OP_PADSV, 0);
4819 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4822 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4823 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4824 newUNOP(OP_RV2GV, 0,
4825 newUNOP(OP_RV2SV, 0,
4826 newGVOP(OP_GV, 0, gv))));
4828 yylval.ival = OP_NULL;
4831 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4832 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4833 yylval.ival = OP_NULL;
4845 register char *s = start;
4854 multi_start = curcop->cop_line;
4856 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4861 sv_upgrade(sv, SVt_PVIV);
4863 (void)SvPOK_only(sv); /* validate pointer */
4866 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4867 to = SvPVX(sv)+SvCUR(sv);
4868 if (multi_open == multi_close) {
4869 for (; s < bufend; s++,to++) {
4870 if (*s == '\n' && !rsfp)
4872 if (*s == '\\' && s+1 < bufend && term != '\\') {
4878 else if (*s == term)
4884 for (; s < bufend; s++,to++) {
4885 if (*s == '\n' && !rsfp)
4887 if (*s == '\\' && s+1 < bufend && term != '\\') {
4893 else if (*s == term && --brackets <= 0)
4895 else if (*s == multi_open)
4901 SvCUR_set(sv, to - SvPVX(sv));
4903 if (s < bufend) break; /* string ends on this line? */
4906 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4908 curcop->cop_line = multi_start;
4912 if (perldb && curstash != debstash) {
4913 SV *sv = NEWSV(88,0);
4915 sv_upgrade(sv, SVt_PVMG);
4916 sv_setsv(sv,linestr);
4917 av_store(GvAV(curcop->cop_filegv),
4918 (I32)curcop->cop_line, sv);
4920 bufend = SvPVX(linestr) + SvCUR(linestr);
4922 multi_end = curcop->cop_line;
4924 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4925 SvLEN_set(sv, SvCUR(sv) + 1);
4926 Renew(SvPVX(sv), SvLEN(sv), char);
4939 register char *s = start;
4949 croak("panic: scan_num");
4954 bool overflowed = FALSE;
4960 else if (s[1] == '.')
4976 yyerror("Illegal octal digit");
4978 case '0': case '1': case '2': case '3': case '4':
4979 case '5': case '6': case '7':
4982 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4983 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4989 if (!overflowed && (n >> shift) != u) {
4990 warn("Integer overflow in %s number",
4991 (shift == 4) ? "hex" : "octal");
5003 case '1': case '2': case '3': case '4': case '5':
5004 case '6': case '7': case '8': case '9': case '.':
5008 while (isDIGIT(*s) || *s == '_') {
5010 if (dowarn && lastub && s - lastub != 3)
5011 warn("Misplaced _ in number");
5017 if (dowarn && lastub && s - lastub != 3)
5018 warn("Misplaced _ in number");
5019 if (*s == '.' && s[1] != '.') {
5022 while (isDIGIT(*s) || *s == '_') {
5029 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5032 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5033 if (*s == '+' || *s == '-')
5040 SET_NUMERIC_STANDARD();
5041 value = atof(tokenbuf);
5043 if (!floatit && (double)tryiv == value)
5044 sv_setiv(sv, tryiv);
5046 sv_setnv(sv, value);
5050 yylval.opval = newSVOP(OP_CONST, 0, sv);
5061 SV *stuff = newSVpv("",0);
5062 bool needargs = FALSE;
5065 if (*s == '.' || *s == '}') {
5067 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5071 if (in_eval && !rsfp) {
5072 eol = strchr(s,'\n');
5077 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5079 for (t = s; t < eol; t++) {
5080 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5082 goto enough; /* ~~ must be first line in formline */
5084 if (*t == '@' || *t == '^')
5087 sv_catpvn(stuff, s, eol-s);
5091 s = filter_gets(linestr, rsfp, 0);
5092 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5093 bufend = bufptr + SvCUR(linestr);
5096 yyerror("Format not terminated");
5106 lex_state = LEX_NORMAL;
5107 nextval[nexttoke].ival = 0;
5111 lex_state = LEX_FORMLINE;
5112 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5114 nextval[nexttoke].ival = OP_FORMLINE;
5118 SvREFCNT_dec(stuff);
5130 cshlen = strlen(cshname);
5135 start_subparse(is_format, flags)
5139 int oldsavestack_ix = savestack_ix;
5140 CV* outsidecv = compcv;
5144 assert(SvTYPE(compcv) == SVt_PVCV);
5151 SAVESPTR(comppad_name);
5153 SAVEI32(comppad_name_fill);
5154 SAVEI32(min_intro_pending);
5155 SAVEI32(max_intro_pending);
5156 SAVEI32(pad_reset_pending);
5158 compcv = (CV*)NEWSV(1104,0);
5159 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5160 CvFLAGS(compcv) |= flags;
5163 comppad_name = newAV();
5164 comppad_name_fill = 0;
5165 min_intro_pending = 0;
5166 av_push(comppad, Nullsv);
5167 curpad = AvARRAY(comppad);
5169 subline = curcop->cop_line;
5171 comppadlist = newAV();
5172 AvREAL_off(comppadlist);
5173 av_store(comppadlist, 0, (SV*)comppad_name);
5174 av_store(comppadlist, 1, (SV*)comppad);
5176 CvPADLIST(compcv) = comppadlist;
5177 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5179 return oldsavestack_ix;
5199 char *context = NULL;
5202 if (!yychar || (yychar == ';' && !rsfp))
5204 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5205 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5206 while (isSPACE(*oldoldbufptr))
5208 context = oldoldbufptr;
5209 contlen = bufptr - oldoldbufptr;
5211 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5212 oldbufptr != bufptr) {
5213 while (isSPACE(*oldbufptr))
5215 context = oldbufptr;
5216 contlen = bufptr - oldbufptr;
5218 else if (yychar > 255)
5219 where = "next token ???";
5220 else if ((yychar & 127) == 127) {
5221 if (lex_state == LEX_NORMAL ||
5222 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5223 where = "at end of line";
5225 where = "within pattern";
5227 where = "within string";
5229 else if (yychar < 32)
5230 (void)sprintf(where = wbuf, "next char ^%c", toCTRL(yychar));
5231 else if (isPRINT_LC(yychar))
5232 (void)sprintf(where = wbuf, "next char %c", yychar);
5234 (void)sprintf(where = wbuf, "next char \\%03o", yychar & 255);
5236 contlen = strlen(where);
5237 (void)sprintf(buf, "%s at %s line %d, ",
5238 s, SvPVX(GvSV(curcop->cop_filegv)), curcop->cop_line);
5240 (void)sprintf(buf+strlen(buf), "near \"%.*s\"\n", contlen, context);
5242 (void)sprintf(buf+strlen(buf), "%s\n", where);
5243 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5244 sprintf(buf+strlen(buf),
5245 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5246 (int)multi_open,(int)multi_close,(long)multi_start);
5252 sv_catpv(GvSV(errgv),buf);
5254 PerlIO_printf(PerlIO_stderr(), "%s",buf);
5255 if (++error_count >= 10)
5256 croak("%s has too many errors.\n",
5257 SvPVX(GvSV(curcop->cop_filegv)));