3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "It all comes from here, the stench and the peril." --Frodo
17 static void check_uni _((void));
18 static void force_next _((I32 type));
19 static char *force_version _((char *start));
20 static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21 static SV *q _((SV *sv));
22 static char *scan_const _((char *start));
23 static char *scan_formline _((char *s));
24 static char *scan_heredoc _((char *s));
25 static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen,
27 static char *scan_inputsymbol _((char *start));
28 static char *scan_pat _((char *start));
29 static char *scan_str _((char *start));
30 static char *scan_subst _((char *start));
31 static char *scan_trans _((char *start));
32 static char *scan_word _((char *s, char *dest, STRLEN destlen,
33 int allow_package, STRLEN *slp));
34 static char *skipspace _((char *s));
35 static void checkcomma _((char *s, char *name, char *what));
36 static void force_ident _((char *s, int kind));
37 static void incline _((char *s));
38 static int intuit_method _((char *s, GV *gv));
39 static int intuit_more _((char *s));
40 static I32 lop _((I32 f, expectation x, char *s));
41 static void missingterm _((char *s));
42 static void no_op _((char *what, char *s));
43 static void set_csh _((void));
44 static I32 sublex_done _((void));
45 static I32 sublex_push _((void));
46 static I32 sublex_start _((void));
48 static int uni _((I32 f, char *s));
50 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
51 static void restore_rsfp _((void *f));
53 static char ident_too_long[] = "Identifier too long";
55 static char *linestart; /* beg. of most recently read line */
57 static char pending_ident; /* pending identifier lookup */
60 I32 super_state; /* lexer state to save */
61 I32 sub_inwhat; /* "lex_inwhat" to use */
62 OP *sub_op; /* "lex_op" to use */
65 /* The following are arranged oddly so that the guard on the switch statement
66 * can get by with a single comparison (if the compiler is smart enough).
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");
234 SAVEI32(lex_brackets);
235 SAVEI32(lex_fakebrack);
236 SAVEI32(lex_casemods);
241 SAVEI16(curcop->cop_line);
245 SAVEPPTR(oldoldbufptr);
248 SAVEPPTR(lex_brackstack);
249 SAVEPPTR(lex_casestack);
250 SAVEDESTRUCTOR(restore_rsfp, rsfp);
252 lex_state = LEX_NORMAL;
257 New(899, lex_brackstack, 120, char);
258 New(899, lex_casestack, 12, char);
259 SAVEFREEPV(lex_brackstack);
260 SAVEFREEPV(lex_casestack);
262 *lex_casestack = '\0';
266 SvREFCNT_dec(lex_stuff);
269 SvREFCNT_dec(lex_repl);
274 if (SvREADONLY(linestr))
275 linestr = sv_2mortal(newSVsv(linestr));
276 s = SvPV(linestr, len);
277 if (len && s[len-1] != ';') {
278 if (!(SvFLAGS(linestr) & SVs_TEMP))
279 linestr = sv_2mortal(newSVsv(linestr));
280 sv_catpvn(linestr, "\n;", 2);
283 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
284 bufend = bufptr + SvCUR(linestr);
286 rs = newSVpv("\n", 1);
300 PerlIO *fp = (PerlIO*)f;
302 if (rsfp == PerlIO_stdin())
303 PerlIO_clearerr(rsfp);
304 else if (rsfp && (rsfp != fp))
322 while (*s == ' ' || *s == '\t') s++;
323 if (strnEQ(s, "line ", 5)) {
332 while (*s == ' ' || *s == '\t')
334 if (*s == '"' && (t = strchr(s+1, '"')))
338 return; /* false alarm */
339 for (t = s; !isSPACE(*t); t++) ;
344 curcop->cop_filegv = gv_fetchfile(s);
346 curcop->cop_filegv = gv_fetchfile(origfilename);
348 curcop->cop_line = atoi(n)-1;
356 if (lex_formbrack && lex_brackets <= lex_formbrack) {
357 while (s < bufend && (*s == ' ' || *s == '\t'))
363 while (s < bufend && isSPACE(*s))
365 if (s < bufend && *s == '#') {
366 while (s < bufend && *s != '\n')
371 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
373 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
374 if (minus_n || minus_p) {
375 sv_setpv(linestr,minus_p ?
376 ";}continue{print or die qq(-p destination: $!\\n)" :
378 sv_catpv(linestr,";}");
379 minus_n = minus_p = 0;
382 sv_setpv(linestr,";");
383 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
384 bufend = SvPVX(linestr) + SvCUR(linestr);
385 if (preprocess && !in_eval)
386 (void)my_pclose(rsfp);
387 else if ((PerlIO*)rsfp == PerlIO_stdin())
388 PerlIO_clearerr(rsfp);
390 (void)PerlIO_close(rsfp);
396 linestart = bufptr = s + prevlen;
397 bufend = s + SvCUR(linestr);
400 if (PERLDB_LINE && curstash != debstash) {
401 SV *sv = NEWSV(85,0);
403 sv_upgrade(sv, SVt_PVMG);
404 sv_setpvn(sv,bufptr,bufend-bufptr);
405 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
416 if (oldoldbufptr != last_uni)
418 while (isSPACE(*last_uni))
420 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
421 if ((t = strchr(s, '(')) && t < bufptr)
425 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
432 #define UNI(f) return uni(f,s)
442 last_uni = oldbufptr;
453 #endif /* CRIPPLED_CC */
455 #define LOP(f,x) return lop(f,x,s)
460 (I32 f, expectation x, char *s)
466 #endif /* CAN_PROTOTYPE */
473 last_lop = oldbufptr;
490 nexttype[nexttoke] = type;
492 if (lex_state != LEX_KNOWNEXT) {
493 lex_defer = lex_state;
495 lex_state = LEX_KNOWNEXT;
500 force_word(start,token,check_keyword,allow_pack,allow_tick)
501 register char *start;
510 start = skipspace(start);
513 (allow_pack && *s == ':') ||
514 (allow_tick && *s == '\'') )
516 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
517 if (check_keyword && keyword(tokenbuf, len))
519 if (token == METHOD) {
529 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
530 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
542 OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
543 nextval[nexttoke].opval = o;
546 dTHR; /* just for in_eval */
547 o->op_private = OPpCONST_ENTERED;
548 /* XXX see note in pp_entereval() for why we forgo typo
549 warnings if the symbol must be introduced in an eval.
551 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
552 kind == '$' ? SVt_PV :
553 kind == '@' ? SVt_PVAV :
554 kind == '%' ? SVt_PVHV :
565 OP *version = Nullop;
569 /* default VERSION number -- GBARR */
574 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
575 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
577 /* real VERSION number -- GBARR */
578 version = yylval.opval;
582 /* NOTE: The parser sees the package name and the VERSION swapped */
583 nextval[nexttoke].opval = version;
601 s = SvPV_force(sv, len);
605 while (s < send && *s != '\\')
612 if (s + 1 < send && (s[1] == '\\'))
613 s++; /* all that, just for this */
618 SvCUR_set(sv, d - SvPVX(sv));
626 register I32 op_type = yylval.ival;
628 if (op_type == OP_NULL) {
629 yylval.opval = lex_op;
633 if (op_type == OP_CONST || op_type == OP_READLINE) {
634 SV *sv = q(lex_stuff);
636 char *p = SvPV(sv, len);
637 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
643 sublex_info.super_state = lex_state;
644 sublex_info.sub_inwhat = op_type;
645 sublex_info.sub_op = lex_op;
646 lex_state = LEX_INTERPPUSH;
650 yylval.opval = lex_op;
664 lex_state = sublex_info.super_state;
666 SAVEI32(lex_brackets);
667 SAVEI32(lex_fakebrack);
668 SAVEI32(lex_casemods);
673 SAVEI16(curcop->cop_line);
676 SAVEPPTR(oldoldbufptr);
679 SAVEPPTR(lex_brackstack);
680 SAVEPPTR(lex_casestack);
685 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
686 bufend += SvCUR(linestr);
692 New(899, lex_brackstack, 120, char);
693 New(899, lex_casestack, 12, char);
694 SAVEFREEPV(lex_brackstack);
695 SAVEFREEPV(lex_casestack);
697 *lex_casestack = '\0';
699 lex_state = LEX_INTERPCONCAT;
700 curcop->cop_line = multi_start;
702 lex_inwhat = sublex_info.sub_inwhat;
703 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
704 lex_inpat = sublex_info.sub_op;
716 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
720 if (lex_casemods) { /* oops, we've got some unbalanced parens */
721 lex_state = LEX_INTERPCASEMOD;
725 /* Is there a right-hand side to take care of? */
726 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
729 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
730 bufend += SvCUR(linestr);
736 *lex_casestack = '\0';
738 if (SvCOMPILED(lex_repl)) {
739 lex_state = LEX_INTERPNORMAL;
743 lex_state = LEX_INTERPCONCAT;
749 bufend = SvPVX(linestr);
750 bufend += SvCUR(linestr);
760 register char *send = bufend;
761 SV *sv = NEWSV(93, send - start);
762 register char *s = start;
763 register char *d = SvPVX(sv);
764 bool dorange = FALSE;
768 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
769 : (lex_inwhat & OP_TRANS)
773 while (s < send || dorange) {
774 if (lex_inwhat == OP_TRANS) {
779 SvGROW(sv, SvLEN(sv) + 256);
783 for (i = (U8)*d; i <= max; i++)
788 else if (*s == '-' && s+1 < send && s != start) {
793 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
794 while (s < send && *s != ')')
797 else if (*s == '#' && lex_inpat &&
798 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
799 while (s+1 < send && *s != '\n')
802 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
804 else if (*s == '$') {
805 if (!lex_inpat) /* not a regexp, so $ must be var */
807 if (s + 1 < send && !strchr(")| \n\t", s[1]))
808 break; /* in regexp, $ might be tail anchor */
810 if (*s == '\\' && s+1 < send) {
812 if (*s && strchr(leaveit, *s)) {
817 if (lex_inwhat == OP_SUBST && !lex_inpat &&
818 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
821 warn("\\%c better written as $%c", *s, *s);
825 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
831 if (lex_inwhat == OP_TRANS) {
839 case '0': case '1': case '2': case '3':
840 case '4': case '5': case '6': case '7':
841 *d++ = scan_oct(s, 3, &len);
845 *d++ = scan_hex(++s, 2, &len);
881 SvCUR_set(sv, d - SvPVX(sv));
884 if (SvCUR(sv) + 5 < SvLEN(sv)) {
885 SvLEN_set(sv, SvCUR(sv) + 1);
886 Renew(SvPVX(sv), SvLEN(sv), char);
889 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
895 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
902 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
904 if (*s != '{' && *s != '[')
909 /* In a pattern, so maybe we have {n,m}. */
926 /* On the other hand, maybe we have a character class */
929 if (*s == ']' || *s == '^')
932 int weight = 2; /* let's weigh the evidence */
934 unsigned char un_char = 0, last_un_char;
935 char *send = strchr(s,']');
936 char tmpbuf[sizeof tokenbuf * 4];
938 if (!send) /* has to be an expression */
944 else if (isDIGIT(*s)) {
946 if (isDIGIT(s[1]) && s[2] == ']')
952 for (; s < send; s++) {
953 last_un_char = un_char;
954 un_char = (unsigned char)*s;
959 weight -= seen[un_char] * 10;
961 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
962 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
967 else if (*s == '$' && s[1] &&
968 strchr("[#!%*<>()-=",s[1])) {
969 if (/*{*/ strchr("])} =",s[2]))
978 if (strchr("wds]",s[1]))
980 else if (seen['\''] || seen['"'])
982 else if (strchr("rnftbxcav",s[1]))
984 else if (isDIGIT(s[1])) {
986 while (s[1] && isDIGIT(s[1]))
996 if (strchr("aA01! ",last_un_char))
998 if (strchr("zZ79~",s[1]))
1002 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
1003 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1008 if (keyword(tmpbuf, d - tmpbuf))
1011 if (un_char == last_un_char + 1)
1013 weight -= seen[un_char];
1018 if (weight >= 0) /* probably a character class */
1026 intuit_method(start,gv)
1030 char *s = start + (*start == '$');
1031 char tmpbuf[sizeof tokenbuf];
1041 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1042 if (*start == '$') {
1043 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1048 return *s == '(' ? FUNCMETH : METHOD;
1050 if (!keyword(tmpbuf, len)) {
1051 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1052 if (indirgv && GvCVu(indirgv))
1054 /* filehandle or package name makes it a method */
1055 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1057 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1058 return 0; /* no assumptions -- "=>" quotes bearword */
1059 nextval[nexttoke].opval =
1060 (OP*)newSVOP(OP_CONST, 0,
1062 nextval[nexttoke].opval->op_private =
1067 return *s == '(' ? FUNCMETH : METHOD;
1077 char *pdb = getenv("PERL5DB");
1081 return "BEGIN { require 'perl5db.pl' }";
1087 /* Encoded script support. filter_add() effectively inserts a
1088 * 'pre-processing' function into the current source input stream.
1089 * Note that the filter function only applies to the current source file
1090 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1092 * The datasv parameter (which may be NULL) can be used to pass
1093 * private data to this instance of the filter. The filter function
1094 * can recover the SV using the FILTER_DATA macro and use it to
1095 * store private buffers and state information.
1097 * The supplied datasv parameter is upgraded to a PVIO type
1098 * and the IoDIRP field is used to store the function pointer.
1099 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1100 * private use must be set using malloc'd pointers.
1102 static int filter_debug = 0;
1105 filter_add(funcp, datasv)
1109 if (!funcp){ /* temporary handy debugging hack to be deleted */
1110 filter_debug = atoi((char*)datasv);
1114 rsfp_filters = newAV();
1117 if (!SvUPGRADE(datasv, SVt_PVIO))
1118 die("Can't upgrade filter_add data to SVt_PVIO");
1119 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1121 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1122 av_unshift(rsfp_filters, 1);
1123 av_store(rsfp_filters, 0, datasv) ;
1128 /* Delete most recently added instance of this filter function. */
1134 warn("filter_del func %p", funcp);
1135 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1137 /* if filter is on top of stack (usual case) just pop it off */
1138 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1139 /* sv_free(av_pop(rsfp_filters)); */
1140 sv_free(av_shift(rsfp_filters));
1144 /* we need to search for the correct entry and clear it */
1145 die("filter_del can only delete in reverse order (currently)");
1149 /* Invoke the n'th filter function for the current rsfp. */
1151 filter_read(idx, buf_sv, maxlen)
1154 int maxlen; /* 0 = read one text line */
1161 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1162 /* Provide a default input filter to make life easy. */
1163 /* Note that we append to the line. This is handy. */
1165 warn("filter_read %d: from rsfp\n", idx);
1169 int old_len = SvCUR(buf_sv) ;
1171 /* ensure buf_sv is large enough */
1172 SvGROW(buf_sv, old_len + maxlen) ;
1173 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1174 if (PerlIO_error(rsfp))
1175 return -1; /* error */
1177 return 0 ; /* end of file */
1179 SvCUR_set(buf_sv, old_len + len) ;
1182 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1183 if (PerlIO_error(rsfp))
1184 return -1; /* error */
1186 return 0 ; /* end of file */
1189 return SvCUR(buf_sv);
1191 /* Skip this filter slot if filter has been deleted */
1192 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1194 warn("filter_read %d: skipped (filter deleted)\n", idx);
1195 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1197 /* Get function pointer hidden within datasv */
1198 funcp = (filter_t)IoDIRP(datasv);
1200 warn("filter_read %d: via function %p (%s)\n",
1201 idx, funcp, SvPV(datasv,na));
1202 /* Call function. The function is expected to */
1203 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1204 /* Return: <0:error, =0:eof, >0:not eof */
1205 return (*funcp)(idx, buf_sv, maxlen);
1209 filter_gets(sv,fp, append)
1211 register PerlIO *fp;
1217 SvCUR_set(sv, 0); /* start with empty line */
1218 if (FILTER_READ(0, sv, 0) > 0)
1219 return ( SvPVX(sv) ) ;
1224 return (sv_gets(sv, fp, append));
1230 static char* exp_name[] =
1231 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1234 EXT int yychar; /* last token */
1245 if (pending_ident) {
1246 char pit = pending_ident;
1250 if (strchr(tokenbuf,':'))
1251 croak(no_myglob,tokenbuf);
1252 yylval.opval = newOP(OP_PADANY, 0);
1253 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1257 if (!strchr(tokenbuf,':')
1258 && (tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1259 if (last_lop_op == OP_SORT &&
1260 tokenbuf[0] == '$' &&
1261 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1264 for (d = in_eval ? oldoldbufptr : linestart;
1265 d < bufend && *d != '\n';
1268 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1269 croak("Can't use \"my %s\" in sort comparison",
1275 yylval.opval = newOP(OP_PADANY, 0);
1276 yylval.opval->op_targ = tmp;
1280 /* Force them to make up their mind on "@foo". */
1281 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1282 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1283 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1284 yyerror(form("In string, %s now must be written as \\%s",
1285 tokenbuf, tokenbuf));
1288 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1289 yylval.opval->op_private = OPpCONST_ENTERED;
1290 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1291 ((tokenbuf[0] == '$') ? SVt_PV
1292 : (tokenbuf[0] == '@') ? SVt_PVAV
1297 switch (lex_state) {
1299 case LEX_NORMAL: /* Some compilers will produce faster */
1300 case LEX_INTERPNORMAL: /* code if we comment these out. */
1306 yylval = nextval[nexttoke];
1308 lex_state = lex_defer;
1309 expect = lex_expect;
1310 lex_defer = LEX_NORMAL;
1312 return(nexttype[nexttoke]);
1314 case LEX_INTERPCASEMOD:
1316 if (bufptr != bufend && *bufptr != '\\')
1317 croak("panic: INTERPCASEMOD");
1319 if (bufptr == bufend || bufptr[1] == 'E') {
1322 oldmod = lex_casestack[--lex_casemods];
1323 lex_casestack[lex_casemods] = '\0';
1324 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1326 lex_state = LEX_INTERPCONCAT;
1330 if (bufptr != bufend)
1332 lex_state = LEX_INTERPCONCAT;
1337 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1338 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1339 if (strchr("LU", *s) &&
1340 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1342 lex_casestack[--lex_casemods] = '\0';
1345 if (lex_casemods > 10) {
1346 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1347 if (newlb != lex_casestack) {
1349 lex_casestack = newlb;
1352 lex_casestack[lex_casemods++] = *s;
1353 lex_casestack[lex_casemods] = '\0';
1354 lex_state = LEX_INTERPCONCAT;
1355 nextval[nexttoke].ival = 0;
1358 nextval[nexttoke].ival = OP_LCFIRST;
1360 nextval[nexttoke].ival = OP_UCFIRST;
1362 nextval[nexttoke].ival = OP_LC;
1364 nextval[nexttoke].ival = OP_UC;
1366 nextval[nexttoke].ival = OP_QUOTEMETA;
1368 croak("panic: yylex");
1380 case LEX_INTERPPUSH:
1381 return sublex_push();
1383 case LEX_INTERPSTART:
1384 if (bufptr == bufend)
1385 return sublex_done();
1387 lex_dojoin = (*bufptr == '@');
1388 lex_state = LEX_INTERPNORMAL;
1390 nextval[nexttoke].ival = 0;
1392 force_ident("\"", '$');
1393 nextval[nexttoke].ival = 0;
1395 nextval[nexttoke].ival = 0;
1397 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1406 case LEX_INTERPENDMAYBE:
1407 if (intuit_more(bufptr)) {
1408 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1416 lex_state = LEX_INTERPCONCAT;
1420 case LEX_INTERPCONCAT:
1423 croak("panic: INTERPCONCAT");
1425 if (bufptr == bufend)
1426 return sublex_done();
1428 if (SvIVX(linestr) == '\'') {
1429 SV *sv = newSVsv(linestr);
1432 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1436 s = scan_const(bufptr);
1438 lex_state = LEX_INTERPCASEMOD;
1440 lex_state = LEX_INTERPSTART;
1444 nextval[nexttoke] = yylval;
1457 lex_state = LEX_NORMAL;
1458 s = scan_formline(bufptr);
1465 oldoldbufptr = oldbufptr;
1468 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1474 croak("Unrecognized character \\%03o", *s & 255);
1477 goto fake_eof; /* emulate EOF on ^D or ^Z */
1483 yyerror("Missing right bracket");
1487 goto retry; /* ignore stray nulls */
1490 if (!in_eval && !preambled) {
1492 sv_setpv(linestr,incl_perldb());
1494 sv_catpv(linestr,";");
1496 while(AvFILL(preambleav) >= 0) {
1497 SV *tmpsv = av_shift(preambleav);
1498 sv_catsv(linestr, tmpsv);
1499 sv_catpv(linestr, ";");
1502 sv_free((SV*)preambleav);
1505 if (minus_n || minus_p) {
1506 sv_catpv(linestr, "LINE: while (<>) {");
1508 sv_catpv(linestr,"chomp;");
1510 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1512 GvIMPORTED_AV_on(gv);
1514 if (strchr("/'\"", *splitstr)
1515 && strchr(splitstr + 1, *splitstr))
1516 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1519 s = "'~#\200\1'"; /* surely one char is unused...*/
1520 while (s[1] && strchr(splitstr, *s)) s++;
1522 sv_catpvf(linestr, "@F=split(%s%c",
1523 "q" + (delim == '\''), delim);
1524 for (s = splitstr; *s; s++) {
1526 sv_catpvn(linestr, "\\", 1);
1527 sv_catpvn(linestr, s, 1);
1529 sv_catpvf(linestr, "%c);", delim);
1533 sv_catpv(linestr,"@F=split(' ');");
1536 sv_catpv(linestr, "\n");
1537 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1538 bufend = SvPVX(linestr) + SvCUR(linestr);
1539 if (PERLDB_LINE && curstash != debstash) {
1540 SV *sv = NEWSV(85,0);
1542 sv_upgrade(sv, SVt_PVMG);
1543 sv_setsv(sv,linestr);
1544 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1549 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1552 if (preprocess && !in_eval)
1553 (void)my_pclose(rsfp);
1554 else if ((PerlIO *)rsfp == PerlIO_stdin())
1555 PerlIO_clearerr(rsfp);
1557 (void)PerlIO_close(rsfp);
1562 if (!in_eval && (minus_n || minus_p)) {
1563 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1564 sv_catpv(linestr,";}");
1565 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1566 bufend = SvPVX(linestr) + SvCUR(linestr);
1567 minus_n = minus_p = 0;
1570 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1571 sv_setpv(linestr,"");
1572 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1575 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1578 /* Incest with pod. */
1579 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1580 sv_setpv(linestr, "");
1581 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1582 bufend = SvPVX(linestr) + SvCUR(linestr);
1587 } while (doextract);
1588 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1589 if (PERLDB_LINE && curstash != debstash) {
1590 SV *sv = NEWSV(85,0);
1592 sv_upgrade(sv, SVt_PVMG);
1593 sv_setsv(sv,linestr);
1594 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1596 bufend = SvPVX(linestr) + SvCUR(linestr);
1597 if (curcop->cop_line == 1) {
1598 while (s < bufend && isSPACE(*s))
1600 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1604 if (*s == '#' && *(s+1) == '!')
1606 #ifdef ALTERNATE_SHEBANG
1608 static char as[] = ALTERNATE_SHEBANG;
1609 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1610 d = s + (sizeof(as) - 1);
1612 #endif /* ALTERNATE_SHEBANG */
1621 while (*d && !isSPACE(*d))
1625 #ifdef ARG_ZERO_IS_SCRIPT
1626 if (ipathend > ipath) {
1628 * HP-UX (at least) sets argv[0] to the script name,
1629 * which makes $^X incorrect. And Digital UNIX and Linux,
1630 * at least, set argv[0] to the basename of the Perl
1631 * interpreter. So, having found "#!", we'll set it right.
1633 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1634 assert(SvPOK(x) || SvGMAGICAL(x));
1635 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1636 sv_setpvn(x, ipath, ipathend - ipath);
1639 TAINT_NOT; /* $^X is always tainted, but that's OK */
1641 #endif /* ARG_ZERO_IS_SCRIPT */
1646 d = instr(s,"perl -");
1648 d = instr(s,"perl");
1649 #ifdef ALTERNATE_SHEBANG
1651 * If the ALTERNATE_SHEBANG on this system starts with a
1652 * character that can be part of a Perl expression, then if
1653 * we see it but not "perl", we're probably looking at the
1654 * start of Perl code, not a request to hand off to some
1655 * other interpreter. Similarly, if "perl" is there, but
1656 * not in the first 'word' of the line, we assume the line
1657 * contains the start of the Perl program.
1659 if (d && *s != '#') {
1661 while (*c && !strchr("; \t\r\n\f\v#", *c))
1664 d = Nullch; /* "perl" not in first word; ignore */
1666 *s = '#'; /* Don't try to parse shebang line */
1668 #endif /* ALTERNATE_SHEBANG */
1673 !instr(s,"indir") &&
1674 instr(origargv[0],"perl"))
1680 while (s < bufend && isSPACE(*s))
1683 Newz(899,newargv,origargc+3,char*);
1685 while (s < bufend && !isSPACE(*s))
1688 Copy(origargv+1, newargv+2, origargc+1, char*);
1693 execv(ipath, newargv);
1694 croak("Can't exec %s", ipath);
1697 U32 oldpdb = perldb;
1698 bool oldn = minus_n;
1699 bool oldp = minus_p;
1701 while (*d && !isSPACE(*d)) d++;
1702 while (*d == ' ' || *d == '\t') d++;
1706 if (*d == 'M' || *d == 'm') {
1708 while (*d && !isSPACE(*d)) d++;
1709 croak("Too late for \"-%.*s\" option",
1712 d = moreswitches(d);
1714 if (PERLDB_LINE && !oldpdb ||
1715 ( minus_n || minus_p ) && !(oldn || oldp) )
1716 /* if we have already added "LINE: while (<>) {",
1717 we must not do it again */
1719 sv_setpv(linestr, "");
1720 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1721 bufend = SvPVX(linestr) + SvCUR(linestr);
1724 (void)gv_fetchfile(origfilename);
1731 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1733 lex_state = LEX_FORMLINE;
1738 warn("Illegal character \\%03o (carriage return)", '\r');
1740 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1741 case ' ': case '\t': case '\f': case 013:
1746 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1748 while (s < d && *s != '\n')
1753 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1755 lex_state = LEX_FORMLINE;
1765 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1770 while (s < bufend && (*s == ' ' || *s == '\t'))
1773 if (strnEQ(s,"=>",2)) {
1775 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1776 (int)tmp, (int)tmp);
1777 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1778 OPERATOR('-'); /* unary minus */
1780 last_uni = oldbufptr;
1781 last_lop_op = OP_FTEREAD; /* good enough */
1783 case 'r': FTST(OP_FTEREAD);
1784 case 'w': FTST(OP_FTEWRITE);
1785 case 'x': FTST(OP_FTEEXEC);
1786 case 'o': FTST(OP_FTEOWNED);
1787 case 'R': FTST(OP_FTRREAD);
1788 case 'W': FTST(OP_FTRWRITE);
1789 case 'X': FTST(OP_FTREXEC);
1790 case 'O': FTST(OP_FTROWNED);
1791 case 'e': FTST(OP_FTIS);
1792 case 'z': FTST(OP_FTZERO);
1793 case 's': FTST(OP_FTSIZE);
1794 case 'f': FTST(OP_FTFILE);
1795 case 'd': FTST(OP_FTDIR);
1796 case 'l': FTST(OP_FTLINK);
1797 case 'p': FTST(OP_FTPIPE);
1798 case 'S': FTST(OP_FTSOCK);
1799 case 'u': FTST(OP_FTSUID);
1800 case 'g': FTST(OP_FTSGID);
1801 case 'k': FTST(OP_FTSVTX);
1802 case 'b': FTST(OP_FTBLK);
1803 case 'c': FTST(OP_FTCHR);
1804 case 't': FTST(OP_FTTTY);
1805 case 'T': FTST(OP_FTTEXT);
1806 case 'B': FTST(OP_FTBINARY);
1807 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1808 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1809 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1811 croak("Unrecognized file test: -%c", (int)tmp);
1818 if (expect == XOPERATOR)
1823 else if (*s == '>') {
1826 if (isIDFIRST(*s)) {
1827 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1835 if (expect == XOPERATOR)
1838 if (isSPACE(*s) || !isSPACE(*bufptr))
1840 OPERATOR('-'); /* unary minus */
1847 if (expect == XOPERATOR)
1852 if (expect == XOPERATOR)
1855 if (isSPACE(*s) || !isSPACE(*bufptr))
1861 if (expect != XOPERATOR) {
1862 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1864 force_ident(tokenbuf, '*');
1877 if (expect == XOPERATOR) {
1882 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1885 yyerror("Final % should be \\% or %name");
1888 pending_ident = '%';
1910 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1911 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1916 if (curcop->cop_line < copline)
1917 copline = curcop->cop_line;
1928 if (lex_brackets <= 0)
1929 yyerror("Unmatched right bracket");
1932 if (lex_state == LEX_INTERPNORMAL) {
1933 if (lex_brackets == 0) {
1934 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1935 lex_state = LEX_INTERPEND;
1942 if (lex_brackets > 100) {
1943 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1944 if (newlb != lex_brackstack) {
1946 lex_brackstack = newlb;
1951 if (lex_formbrack) {
1955 if (oldoldbufptr == last_lop)
1956 lex_brackstack[lex_brackets++] = XTERM;
1958 lex_brackstack[lex_brackets++] = XOPERATOR;
1959 OPERATOR(HASHBRACK);
1961 while (s < bufend && (*s == ' ' || *s == '\t'))
1965 if (d < bufend && *d == '-') {
1968 while (d < bufend && (*d == ' ' || *d == '\t'))
1971 if (d < bufend && isIDFIRST(*d)) {
1972 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1974 while (d < bufend && (*d == ' ' || *d == '\t'))
1977 char minus = (tokenbuf[0] == '-');
1979 (keyword(tokenbuf + 1, len) ||
1980 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1981 perl_get_cv(tokenbuf + 1, FALSE) ))
1982 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1983 tokenbuf + !minus, tokenbuf + !minus);
1984 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1991 lex_brackstack[lex_brackets++] = XSTATE;
1995 lex_brackstack[lex_brackets++] = XOPERATOR;
2000 if (oldoldbufptr == last_lop)
2001 lex_brackstack[lex_brackets++] = XTERM;
2003 lex_brackstack[lex_brackets++] = XOPERATOR;
2006 OPERATOR(HASHBRACK);
2007 /* This hack serves to disambiguate a pair of curlies
2008 * as being a block or an anon hash. Normally, expectation
2009 * determines that, but in cases where we're not in a
2010 * position to expect anything in particular (like inside
2011 * eval"") we have to resolve the ambiguity. This code
2012 * covers the case where the first term in the curlies is a
2013 * quoted string. Most other cases need to be explicitly
2014 * disambiguated by prepending a `+' before the opening
2015 * curly in order to force resolution as an anon hash.
2017 * XXX should probably propagate the outer expectation
2018 * into eval"" to rely less on this hack, but that could
2019 * potentially break current behavior of eval"".
2023 if (*s == '\'' || *s == '"' || *s == '`') {
2024 /* common case: get past first string, handling escapes */
2025 for (t++; t < bufend && *t != *s;)
2026 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2030 else if (*s == 'q') {
2033 || ((*t == 'q' || *t == 'x') && ++t < bufend
2034 && !isALNUM(*t)))) {
2036 char open, close, term;
2039 while (t < bufend && isSPACE(*t))
2043 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2047 for (t++; t < bufend; t++) {
2048 if (*t == '\\' && t+1 < bufend && open != '\\')
2050 else if (*t == open)
2054 for (t++; t < bufend; t++) {
2055 if (*t == '\\' && t+1 < bufend)
2057 else if (*t == close && --brackets <= 0)
2059 else if (*t == open)
2065 else if (isALPHA(*s)) {
2066 for (t++; t < bufend && isALNUM(*t); t++) ;
2068 while (t < bufend && isSPACE(*t))
2070 /* if comma follows first term, call it an anon hash */
2071 /* XXX it could be a comma expression with loop modifiers */
2072 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2073 || (*t == '=' && t[1] == '>')))
2074 OPERATOR(HASHBRACK);
2078 lex_brackstack[lex_brackets-1] = XSTATE;
2084 yylval.ival = curcop->cop_line;
2085 if (isSPACE(*s) || *s == '#')
2086 copline = NOLINE; /* invalidate current command line number */
2091 if (lex_brackets <= 0)
2092 yyerror("Unmatched right bracket");
2094 expect = (expectation)lex_brackstack[--lex_brackets];
2095 if (lex_brackets < lex_formbrack)
2097 if (lex_state == LEX_INTERPNORMAL) {
2098 if (lex_brackets == 0) {
2099 if (lex_fakebrack) {
2100 lex_state = LEX_INTERPEND;
2102 return yylex(); /* ignore fake brackets */
2104 if (*s == '-' && s[1] == '>')
2105 lex_state = LEX_INTERPENDMAYBE;
2106 else if (*s != '[' && *s != '{')
2107 lex_state = LEX_INTERPEND;
2110 if (lex_brackets < lex_fakebrack) {
2113 return yylex(); /* ignore fake brackets */
2123 if (expect == XOPERATOR) {
2124 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2132 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2135 force_ident(tokenbuf, '&');
2139 yylval.ival = (OPpENTERSUB_AMPER<<8);
2158 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2159 warn("Reversed %c= operator",(int)tmp);
2161 if (expect == XSTATE && isALPHA(tmp) &&
2162 (s == linestart+1 || s[-2] == '\n') )
2164 if (in_eval && !rsfp) {
2169 if (strnEQ(s,"=cut",4)) {
2186 if (lex_brackets < lex_formbrack) {
2188 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2189 if (*t == '\n' || *t == '#') {
2207 if (expect != XOPERATOR) {
2208 if (s[1] != '<' && !strchr(s,'>'))
2211 s = scan_heredoc(s);
2213 s = scan_inputsymbol(s);
2214 TERM(sublex_start());
2219 SHop(OP_LEFT_SHIFT);
2233 SHop(OP_RIGHT_SHIFT);
2242 if (expect == XOPERATOR) {
2243 if (lex_formbrack && lex_brackets == lex_formbrack) {
2246 return ','; /* grandfather non-comma-format format */
2250 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2251 if (expect == XOPERATOR)
2252 no_op("Array length", bufptr);
2254 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2259 pending_ident = '#';
2263 if (expect == XOPERATOR)
2264 no_op("Scalar", bufptr);
2266 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2269 yyerror("Final $ should be \\$ or $name");
2273 /* This kludge not intended to be bulletproof. */
2274 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2275 yylval.opval = newSVOP(OP_CONST, 0,
2276 newSViv((IV)compiling.cop_arybase));
2277 yylval.opval->op_private = OPpCONST_ARYBASE;
2282 if (lex_state == LEX_NORMAL)
2285 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2291 isSPACE(*t) || isALNUM(*t) || *t == '$';
2294 bufptr = skipspace(bufptr);
2295 while (t < bufend && *t != ']')
2297 warn("Multidimensional syntax %.*s not supported",
2298 (t - bufptr) + 1, bufptr);
2302 else if (*s == '{') {
2304 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2305 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2307 char tmpbuf[sizeof tokenbuf];
2309 for (t++; isSPACE(*t); t++) ;
2310 if (isIDFIRST(*t)) {
2311 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2312 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2313 warn("You need to quote \"%s\"", tmpbuf);
2320 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2321 bool islop = (last_lop == oldoldbufptr);
2322 if (!islop || last_lop_op == OP_GREPSTART)
2324 else if (strchr("$@\"'`q", *s))
2325 expect = XTERM; /* e.g. print $fh "foo" */
2326 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2327 expect = XTERM; /* e.g. print $fh &sub */
2328 else if (isIDFIRST(*s)) {
2329 char tmpbuf[sizeof tokenbuf];
2330 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2331 if (tmp = keyword(tmpbuf, len)) {
2332 /* binary operators exclude handle interpretations */
2344 expect = XTERM; /* e.g. print $fh length() */
2349 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2350 if (gv && GvCVu(gv))
2351 expect = XTERM; /* e.g. print $fh subr() */
2354 else if (isDIGIT(*s))
2355 expect = XTERM; /* e.g. print $fh 3 */
2356 else if (*s == '.' && isDIGIT(s[1]))
2357 expect = XTERM; /* e.g. print $fh .3 */
2358 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2359 expect = XTERM; /* e.g. print $fh -1 */
2360 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2361 expect = XTERM; /* print $fh <<"EOF" */
2363 pending_ident = '$';
2367 if (expect == XOPERATOR)
2370 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2373 yyerror("Final @ should be \\@ or @name");
2376 if (lex_state == LEX_NORMAL)
2378 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2382 /* Warn about @ where they meant $. */
2384 if (*s == '[' || *s == '{') {
2386 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2388 if (*t == '}' || *t == ']') {
2390 bufptr = skipspace(bufptr);
2391 warn("Scalar value %.*s better written as $%.*s",
2392 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2397 pending_ident = '@';
2400 case '/': /* may either be division or pattern */
2401 case '?': /* may either be conditional or pattern */
2402 if (expect != XOPERATOR) {
2405 TERM(sublex_start());
2413 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2414 (s == linestart || s[-1] == '\n') ) {
2419 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2425 yylval.ival = OPf_SPECIAL;
2431 if (expect != XOPERATOR)
2436 case '0': case '1': case '2': case '3': case '4':
2437 case '5': case '6': case '7': case '8': case '9':
2439 if (expect == XOPERATOR)
2445 if (expect == XOPERATOR) {
2446 if (lex_formbrack && lex_brackets == lex_formbrack) {
2449 return ','; /* grandfather non-comma-format format */
2455 missingterm((char*)0);
2456 yylval.ival = OP_CONST;
2457 TERM(sublex_start());
2461 if (expect == XOPERATOR) {
2462 if (lex_formbrack && lex_brackets == lex_formbrack) {
2465 return ','; /* grandfather non-comma-format format */
2471 missingterm((char*)0);
2472 yylval.ival = OP_CONST;
2473 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2474 if (*d == '$' || *d == '@' || *d == '\\') {
2475 yylval.ival = OP_STRINGIFY;
2479 TERM(sublex_start());
2483 if (expect == XOPERATOR)
2484 no_op("Backticks",s);
2486 missingterm((char*)0);
2487 yylval.ival = OP_BACKTICK;
2489 TERM(sublex_start());
2493 if (dowarn && lex_inwhat && isDIGIT(*s))
2494 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2495 if (expect == XOPERATOR)
2496 no_op("Backslash",s);
2500 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2536 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2538 /* Some keywords can be followed by any delimiter, including ':' */
2539 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2540 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2541 (tokenbuf[0] == 'q' &&
2542 strchr("qwx", tokenbuf[1]))));
2544 /* x::* is just a word, unless x is "CORE" */
2545 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2549 while (d < bufend && isSPACE(*d))
2550 d++; /* no comments skipped here, or s### is misparsed */
2552 /* Is this a label? */
2553 if (!tmp && expect == XSTATE
2554 && d < bufend && *d == ':' && *(d + 1) != ':') {
2556 yylval.pval = savepv(tokenbuf);
2561 /* Check for keywords */
2562 tmp = keyword(tokenbuf, len);
2564 /* Is this a word before a => operator? */
2565 if (strnEQ(d,"=>",2)) {
2567 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2568 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2569 tokenbuf, tokenbuf);
2570 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2571 yylval.opval->op_private = OPpCONST_BARE;
2575 if (tmp < 0) { /* second-class keyword? */
2577 if (expect != XOPERATOR &&
2578 (*s != ':' || s[1] != ':') &&
2579 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2591 default: /* not a keyword */
2595 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2597 /* Get the rest if it looks like a package qualifier */
2599 if (*s == '\'' || *s == ':' && s[1] == ':') {
2600 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2603 croak("Bad name after %s::", tokenbuf);
2606 if (expect == XOPERATOR) {
2607 if (bufptr == linestart) {
2613 no_op("Bareword",s);
2616 /* Look for a subroutine with this name in current package. */
2618 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2620 /* Presume this is going to be a bareword of some sort. */
2623 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2624 yylval.opval->op_private = OPpCONST_BARE;
2626 /* See if it's the indirect object for a list operator. */
2629 oldoldbufptr < bufptr &&
2630 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2631 /* NO SKIPSPACE BEFORE HERE! */
2633 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2635 bool immediate_paren = *s == '(';
2637 /* (Now we can afford to cross potential line boundary.) */
2640 /* Two barewords in a row may indicate method call. */
2642 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2645 /* If not a declared subroutine, it's an indirect object. */
2646 /* (But it's an indir obj regardless for sort.) */
2648 if ((last_lop_op == OP_SORT ||
2649 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2650 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2651 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2656 /* If followed by a paren, it's certainly a subroutine. */
2662 if (gv && GvCVu(gv)) {
2663 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2664 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2669 nextval[nexttoke].opval = yylval.opval;
2676 /* If followed by var or block, call it a method (unless sub) */
2678 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2679 last_lop = oldbufptr;
2680 last_lop_op = OP_METHOD;
2684 /* If followed by a bareword, see if it looks like indir obj. */
2686 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2689 /* Not a method, so call it a subroutine (if defined) */
2691 if (gv && GvCVu(gv)) {
2693 if (lastchar == '-')
2694 warn("Ambiguous use of -%s resolved as -&%s()",
2695 tokenbuf, tokenbuf);
2696 last_lop = oldbufptr;
2697 last_lop_op = OP_ENTERSUB;
2698 /* Check for a constant sub */
2700 if ((sv = cv_const_sv(cv))) {
2702 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2703 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2704 yylval.opval->op_private = 0;
2708 /* Resolve to GV now. */
2709 op_free(yylval.opval);
2710 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2711 /* Is there a prototype? */
2714 char *proto = SvPV((SV*)cv, len);
2717 if (strEQ(proto, "$"))
2719 if (*proto == '&' && *s == '{') {
2720 sv_setpv(subname,"__ANON__");
2724 nextval[nexttoke].opval = yylval.opval;
2730 if (hints & HINT_STRICT_SUBS &&
2733 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2734 last_lop_op != OP_ACCEPT &&
2735 last_lop_op != OP_PIPE_OP &&
2736 last_lop_op != OP_SOCKPAIR)
2739 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2744 /* Call it a bare word */
2748 if (lastchar != '-') {
2749 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2751 warn(warn_reserved, tokenbuf);
2754 if (lastchar && strchr("*%&", lastchar)) {
2755 warn("Operator or semicolon missing before %c%s",
2756 lastchar, tokenbuf);
2757 warn("Ambiguous use of %c resolved as operator %c",
2758 lastchar, lastchar);
2764 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2765 newSVsv(GvSV(curcop->cop_filegv)));
2769 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2770 newSVpvf("%ld", (long)curcop->cop_line));
2773 case KEY___PACKAGE__:
2774 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2776 ? newSVsv(curstname)
2785 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2786 char *pname = "main";
2787 if (tokenbuf[2] == 'D')
2788 pname = HvNAME(curstash ? curstash : defstash);
2789 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2792 GvIOp(gv) = newIO();
2793 IoIFP(GvIOp(gv)) = rsfp;
2794 #if defined(HAS_FCNTL) && defined(F_SETFD)
2796 int fd = PerlIO_fileno(rsfp);
2797 fcntl(fd,F_SETFD,fd >= 3);
2800 /* Mark this internal pseudo-handle as clean */
2801 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2803 IoTYPE(GvIOp(gv)) = '|';
2804 else if ((PerlIO*)rsfp == PerlIO_stdin())
2805 IoTYPE(GvIOp(gv)) = '-';
2807 IoTYPE(GvIOp(gv)) = '<';
2818 if (expect == XSTATE) {
2825 if (*s == ':' && s[1] == ':') {
2828 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2829 tmp = keyword(tokenbuf, len);
2843 LOP(OP_ACCEPT,XTERM);
2849 LOP(OP_ATAN2,XTERM);
2858 LOP(OP_BLESS,XTERM);
2867 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2887 LOP(OP_CRYPT,XTERM);
2891 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2892 if (*d != '0' && isDIGIT(*d))
2893 yywarn("chmod: mode argument is missing initial 0");
2895 LOP(OP_CHMOD,XTERM);
2898 LOP(OP_CHOWN,XTERM);
2901 LOP(OP_CONNECT,XTERM);
2917 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2921 hints |= HINT_BLOCK_SCOPE;
2931 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2932 LOP(OP_DBMOPEN,XTERM);
2938 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2945 yylval.ival = curcop->cop_line;
2959 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2960 UNIBRACK(OP_ENTEREVAL);
2975 case KEY_endhostent:
2981 case KEY_endservent:
2984 case KEY_endprotoent:
2995 yylval.ival = curcop->cop_line;
2997 if (isIDFIRST(*s)) {
2999 if ((bufend - p) >= 3 &&
3000 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
3004 croak("Missing $ on loop variable");
3009 LOP(OP_FORMLINE,XTERM);
3015 LOP(OP_FCNTL,XTERM);
3021 LOP(OP_FLOCK,XTERM);
3030 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3033 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3048 case KEY_getpriority:
3049 LOP(OP_GETPRIORITY,XTERM);
3051 case KEY_getprotobyname:
3054 case KEY_getprotobynumber:
3055 LOP(OP_GPBYNUMBER,XTERM);
3057 case KEY_getprotoent:
3069 case KEY_getpeername:
3070 UNI(OP_GETPEERNAME);
3072 case KEY_gethostbyname:
3075 case KEY_gethostbyaddr:
3076 LOP(OP_GHBYADDR,XTERM);
3078 case KEY_gethostent:
3081 case KEY_getnetbyname:
3084 case KEY_getnetbyaddr:
3085 LOP(OP_GNBYADDR,XTERM);
3090 case KEY_getservbyname:
3091 LOP(OP_GSBYNAME,XTERM);
3093 case KEY_getservbyport:
3094 LOP(OP_GSBYPORT,XTERM);
3096 case KEY_getservent:
3099 case KEY_getsockname:
3100 UNI(OP_GETSOCKNAME);
3102 case KEY_getsockopt:
3103 LOP(OP_GSOCKOPT,XTERM);
3125 yylval.ival = curcop->cop_line;
3129 LOP(OP_INDEX,XTERM);
3135 LOP(OP_IOCTL,XTERM);
3147 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3178 LOP(OP_LISTEN,XTERM);
3188 TERM(sublex_start());
3191 LOP(OP_MAPSTART,XREF);
3194 LOP(OP_MKDIR,XTERM);
3197 LOP(OP_MSGCTL,XTERM);
3200 LOP(OP_MSGGET,XTERM);
3203 LOP(OP_MSGRCV,XTERM);
3206 LOP(OP_MSGSND,XTERM);
3211 if (isIDFIRST(*s)) {
3212 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
3213 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3217 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3224 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3231 if (expect != XSTATE)
3232 yyerror("\"no\" not allowed in expression");
3233 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3234 s = force_version(s);
3243 if (isIDFIRST(*s)) {
3245 for (d = s; isALNUM(*d); d++) ;
3247 if (strchr("|&*+-=!?:.", *t))
3248 warn("Precedence problem: open %.*s should be open(%.*s)",
3254 yylval.ival = OP_OR;
3264 LOP(OP_OPEN_DIR,XTERM);
3267 checkcomma(s,tokenbuf,"filehandle");
3271 checkcomma(s,tokenbuf,"filehandle");
3290 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3294 LOP(OP_PIPE_OP,XTERM);
3299 missingterm((char*)0);
3300 yylval.ival = OP_CONST;
3301 TERM(sublex_start());
3309 missingterm((char*)0);
3310 if (dowarn && SvLEN(lex_stuff)) {
3311 d = SvPV_force(lex_stuff, len);
3312 for (; len; --len, ++d) {
3314 warn("Possible attempt to separate words with commas");
3318 warn("Possible attempt to put comments in qw() list");
3324 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3328 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3331 yylval.ival = OP_SPLIT;
3335 last_lop = oldbufptr;
3336 last_lop_op = OP_SPLIT;
3342 missingterm((char*)0);
3343 yylval.ival = OP_STRINGIFY;
3344 if (SvIVX(lex_stuff) == '\'')
3345 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3346 TERM(sublex_start());
3351 missingterm((char*)0);
3352 yylval.ival = OP_BACKTICK;
3354 TERM(sublex_start());
3361 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3362 if (isIDFIRST(*tokenbuf))
3363 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3365 yyerror("<> should be quotes");
3372 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3376 LOP(OP_RENAME,XTERM);
3385 LOP(OP_RINDEX,XTERM);
3408 LOP(OP_REVERSE,XTERM);
3419 TERM(sublex_start());
3421 TOKEN(1); /* force error */
3430 LOP(OP_SELECT,XTERM);
3436 LOP(OP_SEMCTL,XTERM);
3439 LOP(OP_SEMGET,XTERM);
3442 LOP(OP_SEMOP,XTERM);
3448 LOP(OP_SETPGRP,XTERM);
3450 case KEY_setpriority:
3451 LOP(OP_SETPRIORITY,XTERM);
3453 case KEY_sethostent:
3459 case KEY_setservent:
3462 case KEY_setprotoent:
3472 LOP(OP_SEEKDIR,XTERM);
3474 case KEY_setsockopt:
3475 LOP(OP_SSOCKOPT,XTERM);
3481 LOP(OP_SHMCTL,XTERM);
3484 LOP(OP_SHMGET,XTERM);
3487 LOP(OP_SHMREAD,XTERM);
3490 LOP(OP_SHMWRITE,XTERM);
3493 LOP(OP_SHUTDOWN,XTERM);
3502 LOP(OP_SOCKET,XTERM);
3504 case KEY_socketpair:
3505 LOP(OP_SOCKPAIR,XTERM);
3508 checkcomma(s,tokenbuf,"subroutine name");
3510 if (*s == ';' || *s == ')') /* probably a close */
3511 croak("sort is now a reserved word");
3513 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3517 LOP(OP_SPLIT,XTERM);
3520 LOP(OP_SPRINTF,XTERM);
3523 LOP(OP_SPLICE,XTERM);
3539 LOP(OP_SUBSTR,XTERM);
3546 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3547 char tmpbuf[sizeof tokenbuf];
3549 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3550 if (strchr(tmpbuf, ':'))
3551 sv_setpv(subname, tmpbuf);
3553 sv_setsv(subname,curstname);
3554 sv_catpvn(subname,"::",2);
3555 sv_catpvn(subname,tmpbuf,len);
3557 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3561 expect = XTERMBLOCK;
3562 sv_setpv(subname,"?");
3565 if (tmp == KEY_format) {
3568 lex_formbrack = lex_brackets + 1;
3572 /* Look for a prototype */
3579 SvREFCNT_dec(lex_stuff);
3581 croak("Prototype not terminated");
3584 d = SvPVX(lex_stuff);
3586 for (p = d; *p; ++p) {
3591 SvCUR(lex_stuff) = tmp;
3594 nextval[1] = nextval[0];
3595 nexttype[1] = nexttype[0];
3596 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3597 nexttype[0] = THING;
3598 if (nexttoke == 1) {
3599 lex_defer = lex_state;
3600 lex_expect = expect;
3601 lex_state = LEX_KNOWNEXT;
3606 if (*SvPV(subname,na) == '?') {
3607 sv_setpv(subname,"__ANON__");
3614 LOP(OP_SYSTEM,XREF);
3617 LOP(OP_SYMLINK,XTERM);
3620 LOP(OP_SYSCALL,XTERM);
3623 LOP(OP_SYSOPEN,XTERM);
3626 LOP(OP_SYSSEEK,XTERM);
3629 LOP(OP_SYSREAD,XTERM);
3632 LOP(OP_SYSWRITE,XTERM);
3636 TERM(sublex_start());
3657 LOP(OP_TRUNCATE,XTERM);
3669 yylval.ival = curcop->cop_line;
3673 yylval.ival = curcop->cop_line;
3677 LOP(OP_UNLINK,XTERM);
3683 LOP(OP_UNPACK,XTERM);
3686 LOP(OP_UTIME,XTERM);
3690 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3691 if (*d != '0' && isDIGIT(*d))
3692 yywarn("umask: argument is missing initial 0");
3697 LOP(OP_UNSHIFT,XTERM);
3700 if (expect != XSTATE)
3701 yyerror("\"use\" not allowed in expression");
3704 s = force_version(s);
3705 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3706 nextval[nexttoke].opval = Nullop;
3711 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3712 s = force_version(s);
3725 yylval.ival = curcop->cop_line;
3729 hints |= HINT_BLOCK_SCOPE;
3736 LOP(OP_WAITPID,XTERM);
3742 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3746 if (expect == XOPERATOR)
3752 yylval.ival = OP_XOR;
3757 TERM(sublex_start());
3770 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3771 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3772 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3773 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3774 if (strEQ(d,"__END__")) return KEY___END__;
3778 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3783 if (strEQ(d,"and")) return -KEY_and;
3784 if (strEQ(d,"abs")) return -KEY_abs;
3787 if (strEQ(d,"alarm")) return -KEY_alarm;
3788 if (strEQ(d,"atan2")) return -KEY_atan2;
3791 if (strEQ(d,"accept")) return -KEY_accept;
3796 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3799 if (strEQ(d,"bless")) return -KEY_bless;
3800 if (strEQ(d,"bind")) return -KEY_bind;
3801 if (strEQ(d,"binmode")) return -KEY_binmode;
3804 if (strEQ(d,"CORE")) return -KEY_CORE;
3809 if (strEQ(d,"cmp")) return -KEY_cmp;
3810 if (strEQ(d,"chr")) return -KEY_chr;
3811 if (strEQ(d,"cos")) return -KEY_cos;
3814 if (strEQ(d,"chop")) return KEY_chop;
3817 if (strEQ(d,"close")) return -KEY_close;
3818 if (strEQ(d,"chdir")) return -KEY_chdir;
3819 if (strEQ(d,"chomp")) return KEY_chomp;
3820 if (strEQ(d,"chmod")) return -KEY_chmod;
3821 if (strEQ(d,"chown")) return -KEY_chown;
3822 if (strEQ(d,"crypt")) return -KEY_crypt;
3825 if (strEQ(d,"chroot")) return -KEY_chroot;
3826 if (strEQ(d,"caller")) return -KEY_caller;
3829 if (strEQ(d,"connect")) return -KEY_connect;
3832 if (strEQ(d,"closedir")) return -KEY_closedir;
3833 if (strEQ(d,"continue")) return -KEY_continue;
3838 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3843 if (strEQ(d,"do")) return KEY_do;
3846 if (strEQ(d,"die")) return -KEY_die;
3849 if (strEQ(d,"dump")) return -KEY_dump;
3852 if (strEQ(d,"delete")) return KEY_delete;
3855 if (strEQ(d,"defined")) return KEY_defined;
3856 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3859 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3864 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3865 if (strEQ(d,"END")) return KEY_END;
3870 if (strEQ(d,"eq")) return -KEY_eq;
3873 if (strEQ(d,"eof")) return -KEY_eof;
3874 if (strEQ(d,"exp")) return -KEY_exp;
3877 if (strEQ(d,"else")) return KEY_else;
3878 if (strEQ(d,"exit")) return -KEY_exit;
3879 if (strEQ(d,"eval")) return KEY_eval;
3880 if (strEQ(d,"exec")) return -KEY_exec;
3881 if (strEQ(d,"each")) return KEY_each;
3884 if (strEQ(d,"elsif")) return KEY_elsif;
3887 if (strEQ(d,"exists")) return KEY_exists;
3888 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3891 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3892 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3895 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3898 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3899 if (strEQ(d,"endservent")) return -KEY_endservent;
3902 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3909 if (strEQ(d,"for")) return KEY_for;
3912 if (strEQ(d,"fork")) return -KEY_fork;
3915 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3916 if (strEQ(d,"flock")) return -KEY_flock;
3919 if (strEQ(d,"format")) return KEY_format;
3920 if (strEQ(d,"fileno")) return -KEY_fileno;
3923 if (strEQ(d,"foreach")) return KEY_foreach;
3926 if (strEQ(d,"formline")) return -KEY_formline;
3932 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3933 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3937 if (strnEQ(d,"get",3)) {
3942 if (strEQ(d,"ppid")) return -KEY_getppid;
3943 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3946 if (strEQ(d,"pwent")) return -KEY_getpwent;
3947 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3948 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3951 if (strEQ(d,"peername")) return -KEY_getpeername;
3952 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3953 if (strEQ(d,"priority")) return -KEY_getpriority;
3956 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3959 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3963 else if (*d == 'h') {
3964 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3965 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3966 if (strEQ(d,"hostent")) return -KEY_gethostent;
3968 else if (*d == 'n') {
3969 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3970 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3971 if (strEQ(d,"netent")) return -KEY_getnetent;
3973 else if (*d == 's') {
3974 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3975 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3976 if (strEQ(d,"servent")) return -KEY_getservent;
3977 if (strEQ(d,"sockname")) return -KEY_getsockname;
3978 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3980 else if (*d == 'g') {
3981 if (strEQ(d,"grent")) return -KEY_getgrent;
3982 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3983 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3985 else if (*d == 'l') {
3986 if (strEQ(d,"login")) return -KEY_getlogin;
3988 else if (strEQ(d,"c")) return -KEY_getc;
3993 if (strEQ(d,"gt")) return -KEY_gt;
3994 if (strEQ(d,"ge")) return -KEY_ge;
3997 if (strEQ(d,"grep")) return KEY_grep;
3998 if (strEQ(d,"goto")) return KEY_goto;
3999 if (strEQ(d,"glob")) return -KEY_glob;
4002 if (strEQ(d,"gmtime")) return -KEY_gmtime;
4007 if (strEQ(d,"hex")) return -KEY_hex;
4010 if (strEQ(d,"INIT")) return KEY_INIT;
4015 if (strEQ(d,"if")) return KEY_if;
4018 if (strEQ(d,"int")) return -KEY_int;
4021 if (strEQ(d,"index")) return -KEY_index;
4022 if (strEQ(d,"ioctl")) return -KEY_ioctl;
4027 if (strEQ(d,"join")) return -KEY_join;
4031 if (strEQ(d,"keys")) return KEY_keys;
4032 if (strEQ(d,"kill")) return -KEY_kill;
4037 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4038 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4044 if (strEQ(d,"lt")) return -KEY_lt;
4045 if (strEQ(d,"le")) return -KEY_le;
4046 if (strEQ(d,"lc")) return -KEY_lc;
4049 if (strEQ(d,"log")) return -KEY_log;
4052 if (strEQ(d,"last")) return KEY_last;
4053 if (strEQ(d,"link")) return -KEY_link;
4054 if (strEQ(d,"lock")) return -KEY_lock;
4057 if (strEQ(d,"local")) return KEY_local;
4058 if (strEQ(d,"lstat")) return -KEY_lstat;
4061 if (strEQ(d,"length")) return -KEY_length;
4062 if (strEQ(d,"listen")) return -KEY_listen;
4065 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4068 if (strEQ(d,"localtime")) return -KEY_localtime;
4074 case 1: return KEY_m;
4076 if (strEQ(d,"my")) return KEY_my;
4079 if (strEQ(d,"map")) return KEY_map;
4082 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4085 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4086 if (strEQ(d,"msgget")) return -KEY_msgget;
4087 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4088 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4093 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4096 if (strEQ(d,"next")) return KEY_next;
4097 if (strEQ(d,"ne")) return -KEY_ne;
4098 if (strEQ(d,"not")) return -KEY_not;
4099 if (strEQ(d,"no")) return KEY_no;
4104 if (strEQ(d,"or")) return -KEY_or;
4107 if (strEQ(d,"ord")) return -KEY_ord;
4108 if (strEQ(d,"oct")) return -KEY_oct;
4111 if (strEQ(d,"open")) return -KEY_open;
4114 if (strEQ(d,"opendir")) return -KEY_opendir;
4121 if (strEQ(d,"pop")) return KEY_pop;
4122 if (strEQ(d,"pos")) return KEY_pos;
4125 if (strEQ(d,"push")) return KEY_push;
4126 if (strEQ(d,"pack")) return -KEY_pack;
4127 if (strEQ(d,"pipe")) return -KEY_pipe;
4130 if (strEQ(d,"print")) return KEY_print;
4133 if (strEQ(d,"printf")) return KEY_printf;
4136 if (strEQ(d,"package")) return KEY_package;
4139 if (strEQ(d,"prototype")) return KEY_prototype;
4144 if (strEQ(d,"q")) return KEY_q;
4145 if (strEQ(d,"qq")) return KEY_qq;
4146 if (strEQ(d,"qw")) return KEY_qw;
4147 if (strEQ(d,"qx")) return KEY_qx;
4149 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4154 if (strEQ(d,"ref")) return -KEY_ref;
4157 if (strEQ(d,"read")) return -KEY_read;
4158 if (strEQ(d,"rand")) return -KEY_rand;
4159 if (strEQ(d,"recv")) return -KEY_recv;
4160 if (strEQ(d,"redo")) return KEY_redo;
4163 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4164 if (strEQ(d,"reset")) return -KEY_reset;
4167 if (strEQ(d,"return")) return KEY_return;
4168 if (strEQ(d,"rename")) return -KEY_rename;
4169 if (strEQ(d,"rindex")) return -KEY_rindex;
4172 if (strEQ(d,"require")) return -KEY_require;
4173 if (strEQ(d,"reverse")) return -KEY_reverse;
4174 if (strEQ(d,"readdir")) return -KEY_readdir;
4177 if (strEQ(d,"readlink")) return -KEY_readlink;
4178 if (strEQ(d,"readline")) return -KEY_readline;
4179 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4182 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4188 case 0: return KEY_s;
4190 if (strEQ(d,"scalar")) return KEY_scalar;
4195 if (strEQ(d,"seek")) return -KEY_seek;
4196 if (strEQ(d,"send")) return -KEY_send;
4199 if (strEQ(d,"semop")) return -KEY_semop;
4202 if (strEQ(d,"select")) return -KEY_select;
4203 if (strEQ(d,"semctl")) return -KEY_semctl;
4204 if (strEQ(d,"semget")) return -KEY_semget;
4207 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4208 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4211 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4212 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4215 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4218 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4219 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4220 if (strEQ(d,"setservent")) return -KEY_setservent;
4223 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4224 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4231 if (strEQ(d,"shift")) return KEY_shift;
4234 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4235 if (strEQ(d,"shmget")) return -KEY_shmget;
4238 if (strEQ(d,"shmread")) return -KEY_shmread;
4241 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4242 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4247 if (strEQ(d,"sin")) return -KEY_sin;
4250 if (strEQ(d,"sleep")) return -KEY_sleep;
4253 if (strEQ(d,"sort")) return KEY_sort;
4254 if (strEQ(d,"socket")) return -KEY_socket;
4255 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4258 if (strEQ(d,"split")) return KEY_split;
4259 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4260 if (strEQ(d,"splice")) return KEY_splice;
4263 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4266 if (strEQ(d,"srand")) return -KEY_srand;
4269 if (strEQ(d,"stat")) return -KEY_stat;
4270 if (strEQ(d,"study")) return KEY_study;
4273 if (strEQ(d,"substr")) return -KEY_substr;
4274 if (strEQ(d,"sub")) return KEY_sub;
4279 if (strEQ(d,"system")) return -KEY_system;
4282 if (strEQ(d,"symlink")) return -KEY_symlink;
4283 if (strEQ(d,"syscall")) return -KEY_syscall;
4284 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4285 if (strEQ(d,"sysread")) return -KEY_sysread;
4286 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4289 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4298 if (strEQ(d,"tr")) return KEY_tr;
4301 if (strEQ(d,"tie")) return KEY_tie;
4304 if (strEQ(d,"tell")) return -KEY_tell;
4305 if (strEQ(d,"tied")) return KEY_tied;
4306 if (strEQ(d,"time")) return -KEY_time;
4309 if (strEQ(d,"times")) return -KEY_times;
4312 if (strEQ(d,"telldir")) return -KEY_telldir;
4315 if (strEQ(d,"truncate")) return -KEY_truncate;
4322 if (strEQ(d,"uc")) return -KEY_uc;
4325 if (strEQ(d,"use")) return KEY_use;
4328 if (strEQ(d,"undef")) return KEY_undef;
4329 if (strEQ(d,"until")) return KEY_until;
4330 if (strEQ(d,"untie")) return KEY_untie;
4331 if (strEQ(d,"utime")) return -KEY_utime;
4332 if (strEQ(d,"umask")) return -KEY_umask;
4335 if (strEQ(d,"unless")) return KEY_unless;
4336 if (strEQ(d,"unpack")) return -KEY_unpack;
4337 if (strEQ(d,"unlink")) return -KEY_unlink;
4340 if (strEQ(d,"unshift")) return KEY_unshift;
4341 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4346 if (strEQ(d,"values")) return -KEY_values;
4347 if (strEQ(d,"vec")) return -KEY_vec;
4352 if (strEQ(d,"warn")) return -KEY_warn;
4353 if (strEQ(d,"wait")) return -KEY_wait;
4356 if (strEQ(d,"while")) return KEY_while;
4357 if (strEQ(d,"write")) return -KEY_write;
4360 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4363 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4368 if (len == 1) return -KEY_x;
4369 if (strEQ(d,"xor")) return -KEY_xor;
4372 if (len == 1) return KEY_y;
4381 checkcomma(s,name,what)
4388 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4390 for (w = s+2; *w && level; w++) {
4397 for (; *w && isSPACE(*w); w++) ;
4398 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4399 warn("%s (...) interpreted as function",name);
4401 while (s < bufend && isSPACE(*s))
4405 while (s < bufend && isSPACE(*s))
4407 if (isIDFIRST(*s)) {
4411 while (s < bufend && isSPACE(*s))
4416 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4420 croak("No comma allowed after %s", what);
4426 scan_word(s, dest, destlen, allow_package, slp)
4433 register char *d = dest;
4434 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4437 croak(ident_too_long);
4440 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4445 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4458 scan_ident(s, send, dest, destlen, ck_uni)
4460 register char *send;
4470 if (lex_brackets == 0)
4475 e = d + destlen - 3; /* two-character token, ending NUL */
4477 while (isDIGIT(*s)) {
4479 croak(ident_too_long);
4486 croak(ident_too_long);
4489 else if (*s == '\'' && isIDFIRST(s[1])) {
4494 else if (*s == ':' && s[1] == ':') {
4505 if (lex_state != LEX_NORMAL)
4506 lex_state = LEX_INTERPENDMAYBE;
4509 if (*s == '$' && s[1] &&
4510 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4512 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4513 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4526 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4531 if (isSPACE(s[-1])) {
4534 if (ch != ' ' && ch != '\t') {
4540 if (isIDFIRST(*d)) {
4542 while (isALNUM(*s) || *s == ':')
4545 while (s < send && (*s == ' ' || *s == '\t')) s++;
4546 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4547 if (dowarn && keyword(dest, d - dest)) {
4548 char *brack = *s == '[' ? "[...]" : "{...}";
4549 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4550 funny, dest, brack, funny, dest, brack);
4552 lex_fakebrack = lex_brackets+1;
4554 lex_brackstack[lex_brackets++] = XOPERATOR;
4560 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4561 lex_state = LEX_INTERPEND;
4564 if (dowarn && lex_state == LEX_NORMAL &&
4565 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4566 warn("Ambiguous use of %c{%s} resolved to %c%s",
4567 funny, dest, funny, dest);
4570 s = bracket; /* let the parser handle it */
4574 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4575 lex_state = LEX_INTERPEND;
4579 void pmflag(pmfl,ch)
4586 *pmfl |= PMf_GLOBAL;
4588 *pmfl |= PMf_CONTINUE;
4592 *pmfl |= PMf_MULTILINE;
4594 *pmfl |= PMf_SINGLELINE;
4596 *pmfl |= PMf_EXTENDED;
4606 s = scan_str(start);
4609 SvREFCNT_dec(lex_stuff);
4611 croak("Search pattern not terminated");
4614 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4615 if (multi_open == '?')
4616 pm->op_pmflags |= PMf_ONCE;
4617 while (*s && strchr("iogcmsx", *s))
4618 pmflag(&pm->op_pmflags,*s++);
4619 pm->op_pmpermflags = pm->op_pmflags;
4622 yylval.ival = OP_MATCH;
4635 yylval.ival = OP_NULL;
4637 s = scan_str(start);
4641 SvREFCNT_dec(lex_stuff);
4643 croak("Substitution pattern not terminated");
4646 if (s[-1] == multi_open)
4649 first_start = multi_start;
4653 SvREFCNT_dec(lex_stuff);
4656 SvREFCNT_dec(lex_repl);
4658 croak("Substitution replacement not terminated");
4660 multi_start = first_start; /* so whole substitution is taken together */
4662 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4663 while (*s && strchr("iogcmsex", *s)) {
4669 pmflag(&pm->op_pmflags,*s++);
4674 pm->op_pmflags |= PMf_EVAL;
4675 repl = newSVpv("",0);
4677 sv_catpv(repl, es ? "eval " : "do ");
4678 sv_catpvn(repl, "{ ", 2);
4679 sv_catsv(repl, lex_repl);
4680 sv_catpvn(repl, " };", 2);
4681 SvCOMPILED_on(repl);
4682 SvREFCNT_dec(lex_repl);
4686 pm->op_pmpermflags = pm->op_pmflags;
4688 yylval.ival = OP_SUBST;
4697 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4698 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4700 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4701 pm->op_pmflags |= PMf_SCANFIRST;
4702 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4703 pm->op_pmslen = SvCUR(pm->op_pmshort);
4705 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4706 if (pm->op_pmshort &&
4707 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4709 if (pm->op_pmflags & PMf_SCANFIRST) {
4710 SvREFCNT_dec(pm->op_pmshort);
4711 pm->op_pmshort = Nullsv;
4714 SvREFCNT_dec(pm->op_pmregexp->regmust);
4715 pm->op_pmregexp->regmust = Nullsv;
4719 /* promote the better string */
4720 if ((!pm->op_pmshort &&
4721 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4722 ((pm->op_pmflags & PMf_SCANFIRST) &&
4723 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4724 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4725 pm->op_pmshort = pm->op_pmregexp->regmust;
4726 pm->op_pmslen = SvCUR(pm->op_pmshort);
4727 pm->op_pmregexp->regmust = Nullsv;
4728 pm->op_pmflags |= PMf_SCANFIRST;
4744 yylval.ival = OP_NULL;
4746 s = scan_str(start);
4749 SvREFCNT_dec(lex_stuff);
4751 croak("Translation pattern not terminated");
4753 if (s[-1] == multi_open)
4759 SvREFCNT_dec(lex_stuff);
4762 SvREFCNT_dec(lex_repl);
4764 croak("Translation replacement not terminated");
4767 New(803,tbl,256,short);
4768 o = newPVOP(OP_TRANS, 0, (char*)tbl);
4770 complement = delete = squash = 0;
4771 while (*s == 'c' || *s == 'd' || *s == 's') {
4773 complement = OPpTRANS_COMPLEMENT;
4775 delete = OPpTRANS_DELETE;
4777 squash = OPpTRANS_SQUASH;
4780 o->op_private = delete|squash|complement;
4783 yylval.ival = OP_TRANS;
4793 I32 op_type = OP_SCALAR;
4800 int outer = (rsfp && !lex_inwhat);
4804 e = tokenbuf + sizeof tokenbuf - 1;
4807 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4808 if (*peek && strchr("`'\"",*peek)) {
4811 s = delimcpy(d, e, s, bufend, term, &len);
4822 deprecate("bare << to mean <<\"\"");
4823 for (; isALNUM(*s); s++) {
4828 if (d >= tokenbuf + sizeof tokenbuf - 1)
4829 croak("Delimiter for here document is too long");
4834 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4835 herewas = newSVpv(s,bufend-s);
4837 s--, herewas = newSVpv(s,d-s);
4838 s += SvCUR(herewas);
4840 tmpstr = NEWSV(87,80);
4841 sv_upgrade(tmpstr, SVt_PVIV);
4846 else if (term == '`') {
4847 op_type = OP_BACKTICK;
4848 SvIVX(tmpstr) = '\\';
4852 multi_start = curcop->cop_line;
4853 multi_open = multi_close = '<';
4857 while (s < bufend &&
4858 (*s != term || memNE(s,tokenbuf,len)) ) {
4863 curcop->cop_line = multi_start;
4864 missingterm(tokenbuf);
4866 sv_setpvn(tmpstr,d+1,s-d);
4868 sv_catpvn(herewas,s,bufend-s);
4869 sv_setsv(linestr,herewas);
4870 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4871 bufend = SvPVX(linestr) + SvCUR(linestr);
4874 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4875 while (s >= bufend) { /* multiple line string? */
4877 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4878 curcop->cop_line = multi_start;
4879 missingterm(tokenbuf);
4882 if (PERLDB_LINE && curstash != debstash) {
4883 SV *sv = NEWSV(88,0);
4885 sv_upgrade(sv, SVt_PVMG);
4886 sv_setsv(sv,linestr);
4887 av_store(GvAV(curcop->cop_filegv),
4888 (I32)curcop->cop_line,sv);
4890 bufend = SvPVX(linestr) + SvCUR(linestr);
4891 if (*s == term && memEQ(s,tokenbuf,len)) {
4894 sv_catsv(linestr,herewas);
4895 bufend = SvPVX(linestr) + SvCUR(linestr);
4899 sv_catsv(tmpstr,linestr);
4902 multi_end = curcop->cop_line;
4904 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4905 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4906 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4908 SvREFCNT_dec(herewas);
4910 yylval.ival = op_type;
4915 scan_inputsymbol(start)
4918 register char *s = start;
4924 e = tokenbuf + sizeof tokenbuf;
4925 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4926 if (len >= sizeof tokenbuf)
4927 croak("Excessively long <> operator");
4929 croak("Unterminated <> operator");
4931 if (*d == '$' && d[1]) d++;
4932 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4934 if (d - tokenbuf != len) {
4935 yylval.ival = OP_GLOB;
4937 s = scan_str(start);
4939 croak("Glob not terminated");
4945 (void)strcpy(d,"ARGV");
4948 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4949 OP *o = newOP(OP_PADSV, 0);
4951 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
4954 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4955 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4956 newUNOP(OP_RV2GV, 0,
4957 newUNOP(OP_RV2SV, 0,
4958 newGVOP(OP_GV, 0, gv))));
4960 yylval.ival = OP_NULL;
4963 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4964 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4965 yylval.ival = OP_NULL;
4978 register char *s = start;
4984 /* "#" is allowed as delimiter if on same line */
4985 while (*s == ' ' || *s == '\t')
4992 multi_start = curcop->cop_line;
4994 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4999 sv_upgrade(sv, SVt_PVIV);
5001 (void)SvPOK_only(sv); /* validate pointer */
5004 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
5005 to = SvPVX(sv)+SvCUR(sv);
5006 if (multi_open == multi_close) {
5007 for (; s < bufend; s++,to++) {
5008 if (*s == '\n' && !rsfp)
5010 if (*s == '\\' && s+1 < bufend && term != '\\') {
5016 else if (*s == term)
5022 for (; s < bufend; s++,to++) {
5023 if (*s == '\n' && !rsfp)
5025 if (*s == '\\' && s+1 < bufend) {
5026 if ((s[1] == multi_open) || (s[1] == multi_close))
5031 else if (*s == multi_close && --brackets <= 0)
5033 else if (*s == multi_open)
5039 SvCUR_set(sv, to - SvPVX(sv));
5041 if (s < bufend) break; /* string ends on this line? */
5044 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5046 curcop->cop_line = multi_start;
5050 if (PERLDB_LINE && curstash != debstash) {
5051 SV *sv = NEWSV(88,0);
5053 sv_upgrade(sv, SVt_PVMG);
5054 sv_setsv(sv,linestr);
5055 av_store(GvAV(curcop->cop_filegv),
5056 (I32)curcop->cop_line, sv);
5058 bufend = SvPVX(linestr) + SvCUR(linestr);
5060 multi_end = curcop->cop_line;
5062 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5063 SvLEN_set(sv, SvCUR(sv) + 1);
5064 Renew(SvPVX(sv), SvLEN(sv), char);
5077 register char *s = start;
5085 static char number_too_long[] = "Number too long";
5089 croak("panic: scan_num");
5094 bool overflowed = FALSE;
5100 else if (s[1] == '.')
5116 yyerror("Illegal octal digit");
5118 case '0': case '1': case '2': case '3': case '4':
5119 case '5': case '6': case '7':
5122 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5123 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5129 if (!overflowed && (n >> shift) != u) {
5130 warn("Integer overflow in %s number",
5131 (shift == 4) ? "hex" : "octal");
5143 case '1': case '2': case '3': case '4': case '5':
5144 case '6': case '7': case '8': case '9': case '.':
5147 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5149 while (isDIGIT(*s) || *s == '_') {
5151 if (dowarn && lastub && s - lastub != 3)
5152 warn("Misplaced _ in number");
5157 croak(number_too_long);
5161 if (dowarn && lastub && s - lastub != 3)
5162 warn("Misplaced _ in number");
5163 if (*s == '.' && s[1] != '.') {
5166 for (; isDIGIT(*s) || *s == '_'; s++) {
5168 croak(number_too_long);
5173 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5176 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5177 if (*s == '+' || *s == '-')
5179 while (isDIGIT(*s)) {
5181 croak(number_too_long);
5187 SET_NUMERIC_STANDARD();
5188 value = atof(tokenbuf);
5190 if (!floatit && (double)tryiv == value)
5191 sv_setiv(sv, tryiv);
5193 sv_setnv(sv, value);
5197 yylval.opval = newSVOP(OP_CONST, 0, sv);
5209 SV *stuff = newSVpv("",0);
5210 bool needargs = FALSE;
5213 if (*s == '.' || *s == '}') {
5215 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5219 if (in_eval && !rsfp) {
5220 eol = strchr(s,'\n');
5225 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5227 for (t = s; t < eol; t++) {
5228 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5230 goto enough; /* ~~ must be first line in formline */
5232 if (*t == '@' || *t == '^')
5235 sv_catpvn(stuff, s, eol-s);
5239 s = filter_gets(linestr, rsfp, 0);
5240 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5241 bufend = bufptr + SvCUR(linestr);
5244 yyerror("Format not terminated");
5254 lex_state = LEX_NORMAL;
5255 nextval[nexttoke].ival = 0;
5259 lex_state = LEX_FORMLINE;
5260 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5262 nextval[nexttoke].ival = OP_FORMLINE;
5266 SvREFCNT_dec(stuff);
5278 cshlen = strlen(cshname);
5283 start_subparse(is_format, flags)
5288 I32 oldsavestack_ix = savestack_ix;
5289 CV* outsidecv = compcv;
5293 assert(SvTYPE(compcv) == SVt_PVCV);
5300 SAVESPTR(comppad_name);
5302 SAVEI32(comppad_name_fill);
5303 SAVEI32(min_intro_pending);
5304 SAVEI32(max_intro_pending);
5305 SAVEI32(pad_reset_pending);
5307 compcv = (CV*)NEWSV(1104,0);
5308 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5309 CvFLAGS(compcv) |= flags;
5312 av_push(comppad, Nullsv);
5313 curpad = AvARRAY(comppad);
5314 comppad_name = newAV();
5315 comppad_name_fill = 0;
5316 min_intro_pending = 0;
5318 subline = curcop->cop_line;
5320 av_store(comppad_name, 0, newSVpv("@_", 2));
5321 curpad[0] = (SV*)newAV();
5322 SvPADMY_on(curpad[0]); /* XXX Needed? */
5323 CvOWNER(compcv) = 0;
5324 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5325 MUTEX_INIT(CvMUTEXP(compcv));
5326 #endif /* USE_THREADS */
5328 comppadlist = newAV();
5329 AvREAL_off(comppadlist);
5330 av_store(comppadlist, 0, (SV*)comppad_name);
5331 av_store(comppadlist, 1, (SV*)comppad);
5333 CvPADLIST(compcv) = comppadlist;
5334 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5336 CvOWNER(compcv) = 0;
5337 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5338 MUTEX_INIT(CvMUTEXP(compcv));
5339 #endif /* USE_THREADS */
5341 return oldsavestack_ix;
5362 char *context = NULL;
5366 if (!yychar || (yychar == ';' && !rsfp))
5368 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5369 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5370 while (isSPACE(*oldoldbufptr))
5372 context = oldoldbufptr;
5373 contlen = bufptr - oldoldbufptr;
5375 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5376 oldbufptr != bufptr) {
5377 while (isSPACE(*oldbufptr))
5379 context = oldbufptr;
5380 contlen = bufptr - oldbufptr;
5382 else if (yychar > 255)
5383 where = "next token ???";
5384 else if ((yychar & 127) == 127) {
5385 if (lex_state == LEX_NORMAL ||
5386 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5387 where = "at end of line";
5389 where = "within pattern";
5391 where = "within string";
5394 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5396 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5397 else if (isPRINT_LC(yychar))
5398 sv_catpvf(where_sv, "%c", yychar);
5400 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5401 where = SvPVX(where_sv);
5403 msg = sv_2mortal(newSVpv(s, 0));
5404 sv_catpvf(msg, " at %_ line %ld, ",
5405 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5407 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5409 sv_catpvf(msg, "%s\n", where);
5410 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5412 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5413 (int)multi_open,(int)multi_close,(long)multi_start);
5419 sv_catsv(GvSV(errgv), msg);
5421 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5422 if (++error_count >= 10)
5423 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
5425 in_my_stash = Nullhv;