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");
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 ?
373 ";}continue{print or die qq(-p destination: $!\\n)" :
375 sv_catpv(linestr,";}");
376 minus_n = minus_p = 0;
379 sv_setpv(linestr,";");
380 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
381 bufend = SvPVX(linestr) + SvCUR(linestr);
382 if (preprocess && !in_eval)
383 (void)my_pclose(rsfp);
384 else if ((PerlIO*)rsfp == PerlIO_stdin())
385 PerlIO_clearerr(rsfp);
387 (void)PerlIO_close(rsfp);
391 linestart = bufptr = s + prevlen;
392 bufend = s + SvCUR(linestr);
395 if (PERLDB_LINE && curstash != debstash) {
396 SV *sv = NEWSV(85,0);
398 sv_upgrade(sv, SVt_PVMG);
399 sv_setpvn(sv,bufptr,bufend-bufptr);
400 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
411 if (oldoldbufptr != last_uni)
413 while (isSPACE(*last_uni))
415 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
416 if ((t = strchr(s, '(')) && t < bufptr)
420 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
427 #define UNI(f) return uni(f,s)
437 last_uni = oldbufptr;
448 #endif /* CRIPPLED_CC */
450 #define LOP(f,x) return lop(f,x,s)
455 (I32 f, expectation x, char *s)
461 #endif /* CAN_PROTOTYPE */
467 last_lop = oldbufptr;
484 nexttype[nexttoke] = type;
486 if (lex_state != LEX_KNOWNEXT) {
487 lex_defer = lex_state;
489 lex_state = LEX_KNOWNEXT;
494 force_word(start,token,check_keyword,allow_pack,allow_tick)
495 register char *start;
504 start = skipspace(start);
507 (allow_pack && *s == ':') ||
508 (allow_tick && *s == '\'') )
510 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
511 if (check_keyword && keyword(tokenbuf, len))
513 if (token == METHOD) {
523 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
524 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
536 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
537 nextval[nexttoke].opval = op;
540 op->op_private = OPpCONST_ENTERED;
541 /* XXX see note in pp_entereval() for why we forgo typo
542 warnings if the symbol must be introduced in an eval.
544 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
545 kind == '$' ? SVt_PV :
546 kind == '@' ? SVt_PVAV :
547 kind == '%' ? SVt_PVHV :
558 OP *version = Nullop;
562 /* default VERSION number -- GBARR */
567 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
568 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
570 /* real VERSION number -- GBARR */
571 version = yylval.opval;
575 /* NOTE: The parser sees the package name and the VERSION swapped */
576 nextval[nexttoke].opval = version;
594 s = SvPV_force(sv, len);
598 while (s < send && *s != '\\')
605 if (s + 1 < send && (s[1] == '\\'))
606 s++; /* all that, just for this */
611 SvCUR_set(sv, d - SvPVX(sv));
619 register I32 op_type = yylval.ival;
621 if (op_type == OP_NULL) {
622 yylval.opval = lex_op;
626 if (op_type == OP_CONST || op_type == OP_READLINE) {
627 SV *sv = q(lex_stuff);
629 char *p = SvPV(sv, len);
630 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
636 sublex_info.super_state = lex_state;
637 sublex_info.sub_inwhat = op_type;
638 sublex_info.sub_op = lex_op;
639 lex_state = LEX_INTERPPUSH;
643 yylval.opval = lex_op;
656 lex_state = sublex_info.super_state;
658 SAVEI32(lex_brackets);
659 SAVEI32(lex_fakebrack);
660 SAVEI32(lex_casemods);
665 SAVEI16(curcop->cop_line);
668 SAVEPPTR(oldoldbufptr);
671 SAVEPPTR(lex_brackstack);
672 SAVEPPTR(lex_casestack);
677 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
678 bufend += SvCUR(linestr);
684 New(899, lex_brackstack, 120, char);
685 New(899, lex_casestack, 12, char);
686 SAVEFREEPV(lex_brackstack);
687 SAVEFREEPV(lex_casestack);
689 *lex_casestack = '\0';
691 lex_state = LEX_INTERPCONCAT;
692 curcop->cop_line = multi_start;
694 lex_inwhat = sublex_info.sub_inwhat;
695 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
696 lex_inpat = sublex_info.sub_op;
708 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
712 if (lex_casemods) { /* oops, we've got some unbalanced parens */
713 lex_state = LEX_INTERPCASEMOD;
717 /* Is there a right-hand side to take care of? */
718 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
721 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
722 bufend += SvCUR(linestr);
728 *lex_casestack = '\0';
730 if (SvCOMPILED(lex_repl)) {
731 lex_state = LEX_INTERPNORMAL;
735 lex_state = LEX_INTERPCONCAT;
741 bufend = SvPVX(linestr);
742 bufend += SvCUR(linestr);
752 register char *send = bufend;
753 SV *sv = NEWSV(93, send - start);
754 register char *s = start;
755 register char *d = SvPVX(sv);
756 bool dorange = FALSE;
760 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
761 : (lex_inwhat & OP_TRANS)
765 while (s < send || dorange) {
766 if (lex_inwhat == OP_TRANS) {
771 SvGROW(sv, SvLEN(sv) + 256);
775 for (i = (U8)*d; i <= max; i++)
780 else if (*s == '-' && s+1 < send && s != start) {
785 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
786 while (s < send && *s != ')')
789 else if (*s == '#' && lex_inpat &&
790 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
791 while (s+1 < send && *s != '\n')
794 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
796 else if (*s == '$') {
797 if (!lex_inpat) /* not a regexp, so $ must be var */
799 if (s + 1 < send && !strchr(")| \n\t", s[1]))
800 break; /* in regexp, $ might be tail anchor */
802 if (*s == '\\' && s+1 < send) {
804 if (*s && strchr(leave, *s)) {
809 if (lex_inwhat == OP_SUBST && !lex_inpat &&
810 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
813 warn("\\%c better written as $%c", *s, *s);
817 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
823 if (lex_inwhat == OP_TRANS) {
831 case '0': case '1': case '2': case '3':
832 case '4': case '5': case '6': case '7':
833 *d++ = scan_oct(s, 3, &len);
837 *d++ = scan_hex(++s, 2, &len);
873 SvCUR_set(sv, d - SvPVX(sv));
876 if (SvCUR(sv) + 5 < SvLEN(sv)) {
877 SvLEN_set(sv, SvCUR(sv) + 1);
878 Renew(SvPVX(sv), SvLEN(sv), char);
881 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
887 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
894 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
896 if (*s != '{' && *s != '[')
901 /* In a pattern, so maybe we have {n,m}. */
918 /* On the other hand, maybe we have a character class */
921 if (*s == ']' || *s == '^')
924 int weight = 2; /* let's weigh the evidence */
926 unsigned char un_char = 0, last_un_char;
927 char *send = strchr(s,']');
928 char tmpbuf[sizeof tokenbuf * 4];
930 if (!send) /* has to be an expression */
936 else if (isDIGIT(*s)) {
938 if (isDIGIT(s[1]) && s[2] == ']')
944 for (; s < send; s++) {
945 last_un_char = un_char;
946 un_char = (unsigned char)*s;
951 weight -= seen[un_char] * 10;
953 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
954 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
959 else if (*s == '$' && s[1] &&
960 strchr("[#!%*<>()-=",s[1])) {
961 if (/*{*/ strchr("])} =",s[2]))
970 if (strchr("wds]",s[1]))
972 else if (seen['\''] || seen['"'])
974 else if (strchr("rnftbxcav",s[1]))
976 else if (isDIGIT(s[1])) {
978 while (s[1] && isDIGIT(s[1]))
988 if (strchr("aA01! ",last_un_char))
990 if (strchr("zZ79~",s[1]))
994 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
995 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1000 if (keyword(tmpbuf, d - tmpbuf))
1003 if (un_char == last_un_char + 1)
1005 weight -= seen[un_char];
1010 if (weight >= 0) /* probably a character class */
1018 intuit_method(start,gv)
1022 char *s = start + (*start == '$');
1023 char tmpbuf[sizeof tokenbuf];
1033 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1034 if (*start == '$') {
1035 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1040 return *s == '(' ? FUNCMETH : METHOD;
1042 if (!keyword(tmpbuf, len)) {
1043 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1044 if (indirgv && GvCVu(indirgv))
1046 /* filehandle or package name makes it a method */
1047 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1049 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1050 return 0; /* no assumptions -- "=>" quotes bearword */
1051 nextval[nexttoke].opval =
1052 (OP*)newSVOP(OP_CONST, 0,
1054 nextval[nexttoke].opval->op_private =
1059 return *s == '(' ? FUNCMETH : METHOD;
1069 char *pdb = getenv("PERL5DB");
1073 return "BEGIN { require 'perl5db.pl' }";
1079 /* Encoded script support. filter_add() effectively inserts a
1080 * 'pre-processing' function into the current source input stream.
1081 * Note that the filter function only applies to the current source file
1082 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1084 * The datasv parameter (which may be NULL) can be used to pass
1085 * private data to this instance of the filter. The filter function
1086 * can recover the SV using the FILTER_DATA macro and use it to
1087 * store private buffers and state information.
1089 * The supplied datasv parameter is upgraded to a PVIO type
1090 * and the IoDIRP field is used to store the function pointer.
1091 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1092 * private use must be set using malloc'd pointers.
1094 static int filter_debug = 0;
1097 filter_add(funcp, datasv)
1101 if (!funcp){ /* temporary handy debugging hack to be deleted */
1102 filter_debug = atoi((char*)datasv);
1106 rsfp_filters = newAV();
1109 if (!SvUPGRADE(datasv, SVt_PVIO))
1110 die("Can't upgrade filter_add data to SVt_PVIO");
1111 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1113 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1114 av_unshift(rsfp_filters, 1);
1115 av_store(rsfp_filters, 0, datasv) ;
1120 /* Delete most recently added instance of this filter function. */
1126 warn("filter_del func %p", funcp);
1127 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1129 /* if filter is on top of stack (usual case) just pop it off */
1130 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1131 /* sv_free(av_pop(rsfp_filters)); */
1132 sv_free(av_shift(rsfp_filters));
1136 /* we need to search for the correct entry and clear it */
1137 die("filter_del can only delete in reverse order (currently)");
1141 /* Invoke the n'th filter function for the current rsfp. */
1143 filter_read(idx, buf_sv, maxlen)
1146 int maxlen; /* 0 = read one text line */
1153 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1154 /* Provide a default input filter to make life easy. */
1155 /* Note that we append to the line. This is handy. */
1157 warn("filter_read %d: from rsfp\n", idx);
1161 int old_len = SvCUR(buf_sv) ;
1163 /* ensure buf_sv is large enough */
1164 SvGROW(buf_sv, old_len + maxlen) ;
1165 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1166 if (PerlIO_error(rsfp))
1167 return -1; /* error */
1169 return 0 ; /* end of file */
1171 SvCUR_set(buf_sv, old_len + len) ;
1174 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1175 if (PerlIO_error(rsfp))
1176 return -1; /* error */
1178 return 0 ; /* end of file */
1181 return SvCUR(buf_sv);
1183 /* Skip this filter slot if filter has been deleted */
1184 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1186 warn("filter_read %d: skipped (filter deleted)\n", idx);
1187 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1189 /* Get function pointer hidden within datasv */
1190 funcp = (filter_t)IoDIRP(datasv);
1192 warn("filter_read %d: via function %p (%s)\n",
1193 idx, funcp, SvPV(datasv,na));
1194 /* Call function. The function is expected to */
1195 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1196 /* Return: <0:error, =0:eof, >0:not eof */
1197 return (*funcp)(idx, buf_sv, maxlen);
1201 filter_gets(sv,fp, append)
1203 register PerlIO *fp;
1209 SvCUR_set(sv, 0); /* start with empty line */
1210 if (FILTER_READ(0, sv, 0) > 0)
1211 return ( SvPVX(sv) ) ;
1216 return (sv_gets(sv, fp, append));
1222 static char* exp_name[] =
1223 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1226 EXT int yychar; /* last token */
1236 if (pending_ident) {
1237 char pit = pending_ident;
1241 if (strchr(tokenbuf,':'))
1242 croak(no_myglob,tokenbuf);
1243 yylval.opval = newOP(OP_PADANY, 0);
1244 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1248 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1249 if (last_lop_op == OP_SORT &&
1250 tokenbuf[0] == '$' &&
1251 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1254 for (d = in_eval ? oldoldbufptr : linestart;
1255 d < bufend && *d != '\n';
1258 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1259 croak("Can't use \"my %s\" in sort comparison",
1265 yylval.opval = newOP(OP_PADANY, 0);
1266 yylval.opval->op_targ = tmp;
1270 /* Force them to make up their mind on "@foo". */
1271 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1272 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1273 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1274 yyerror(form("In string, %s now must be written as \\%s",
1275 tokenbuf, tokenbuf));
1278 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1279 yylval.opval->op_private = OPpCONST_ENTERED;
1280 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1281 ((tokenbuf[0] == '$') ? SVt_PV
1282 : (tokenbuf[0] == '@') ? SVt_PVAV
1287 switch (lex_state) {
1289 case LEX_NORMAL: /* Some compilers will produce faster */
1290 case LEX_INTERPNORMAL: /* code if we comment these out. */
1296 yylval = nextval[nexttoke];
1298 lex_state = lex_defer;
1299 expect = lex_expect;
1300 lex_defer = LEX_NORMAL;
1302 return(nexttype[nexttoke]);
1304 case LEX_INTERPCASEMOD:
1306 if (bufptr != bufend && *bufptr != '\\')
1307 croak("panic: INTERPCASEMOD");
1309 if (bufptr == bufend || bufptr[1] == 'E') {
1312 oldmod = lex_casestack[--lex_casemods];
1313 lex_casestack[lex_casemods] = '\0';
1314 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1316 lex_state = LEX_INTERPCONCAT;
1320 if (bufptr != bufend)
1322 lex_state = LEX_INTERPCONCAT;
1327 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1328 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1329 if (strchr("LU", *s) &&
1330 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1332 lex_casestack[--lex_casemods] = '\0';
1335 if (lex_casemods > 10) {
1336 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1337 if (newlb != lex_casestack) {
1339 lex_casestack = newlb;
1342 lex_casestack[lex_casemods++] = *s;
1343 lex_casestack[lex_casemods] = '\0';
1344 lex_state = LEX_INTERPCONCAT;
1345 nextval[nexttoke].ival = 0;
1348 nextval[nexttoke].ival = OP_LCFIRST;
1350 nextval[nexttoke].ival = OP_UCFIRST;
1352 nextval[nexttoke].ival = OP_LC;
1354 nextval[nexttoke].ival = OP_UC;
1356 nextval[nexttoke].ival = OP_QUOTEMETA;
1358 croak("panic: yylex");
1370 case LEX_INTERPPUSH:
1371 return sublex_push();
1373 case LEX_INTERPSTART:
1374 if (bufptr == bufend)
1375 return sublex_done();
1377 lex_dojoin = (*bufptr == '@');
1378 lex_state = LEX_INTERPNORMAL;
1380 nextval[nexttoke].ival = 0;
1382 force_ident("\"", '$');
1383 nextval[nexttoke].ival = 0;
1385 nextval[nexttoke].ival = 0;
1387 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1396 case LEX_INTERPENDMAYBE:
1397 if (intuit_more(bufptr)) {
1398 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1406 lex_state = LEX_INTERPCONCAT;
1410 case LEX_INTERPCONCAT:
1413 croak("panic: INTERPCONCAT");
1415 if (bufptr == bufend)
1416 return sublex_done();
1418 if (SvIVX(linestr) == '\'') {
1419 SV *sv = newSVsv(linestr);
1422 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1426 s = scan_const(bufptr);
1428 lex_state = LEX_INTERPCASEMOD;
1430 lex_state = LEX_INTERPSTART;
1434 nextval[nexttoke] = yylval;
1447 lex_state = LEX_NORMAL;
1448 s = scan_formline(bufptr);
1455 oldoldbufptr = oldbufptr;
1458 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1464 croak("Unrecognized character \\%03o", *s & 255);
1467 goto fake_eof; /* emulate EOF on ^D or ^Z */
1473 yyerror("Missing right bracket");
1477 goto retry; /* ignore stray nulls */
1480 if (!in_eval && !preambled) {
1482 sv_setpv(linestr,incl_perldb());
1484 sv_catpv(linestr,";");
1486 while(AvFILL(preambleav) >= 0) {
1487 SV *tmpsv = av_shift(preambleav);
1488 sv_catsv(linestr, tmpsv);
1489 sv_catpv(linestr, ";");
1492 sv_free((SV*)preambleav);
1495 if (minus_n || minus_p) {
1496 sv_catpv(linestr, "LINE: while (<>) {");
1498 sv_catpv(linestr,"chomp;");
1500 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1502 GvIMPORTED_AV_on(gv);
1504 if (strchr("/'\"", *splitstr)
1505 && strchr(splitstr + 1, *splitstr))
1506 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1509 s = "'~#\200\1'"; /* surely one char is unused...*/
1510 while (s[1] && strchr(splitstr, *s)) s++;
1512 sv_catpvf(linestr, "@F=split(%s%c",
1513 "q" + (delim == '\''), delim);
1514 for (s = splitstr; *s; s++) {
1516 sv_catpvn(linestr, "\\", 1);
1517 sv_catpvn(linestr, s, 1);
1519 sv_catpvf(linestr, "%c);", delim);
1523 sv_catpv(linestr,"@F=split(' ');");
1526 sv_catpv(linestr, "\n");
1527 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1528 bufend = SvPVX(linestr) + SvCUR(linestr);
1529 if (PERLDB_LINE && curstash != debstash) {
1530 SV *sv = NEWSV(85,0);
1532 sv_upgrade(sv, SVt_PVMG);
1533 sv_setsv(sv,linestr);
1534 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1539 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1542 if (preprocess && !in_eval)
1543 (void)my_pclose(rsfp);
1544 else if ((PerlIO *)rsfp == PerlIO_stdin())
1545 PerlIO_clearerr(rsfp);
1547 (void)PerlIO_close(rsfp);
1550 if (!in_eval && (minus_n || minus_p)) {
1551 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1552 sv_catpv(linestr,";}");
1553 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1554 bufend = SvPVX(linestr) + SvCUR(linestr);
1555 minus_n = minus_p = 0;
1558 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1559 sv_setpv(linestr,"");
1560 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1563 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1566 /* Incest with pod. */
1567 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1568 sv_setpv(linestr, "");
1569 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1570 bufend = SvPVX(linestr) + SvCUR(linestr);
1575 } while (doextract);
1576 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1577 if (PERLDB_LINE && curstash != debstash) {
1578 SV *sv = NEWSV(85,0);
1580 sv_upgrade(sv, SVt_PVMG);
1581 sv_setsv(sv,linestr);
1582 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1584 bufend = SvPVX(linestr) + SvCUR(linestr);
1585 if (curcop->cop_line == 1) {
1586 while (s < bufend && isSPACE(*s))
1588 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1592 if (*s == '#' && *(s+1) == '!')
1594 #ifdef ALTERNATE_SHEBANG
1596 static char as[] = ALTERNATE_SHEBANG;
1597 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1598 d = s + (sizeof(as) - 1);
1600 #endif /* ALTERNATE_SHEBANG */
1609 while (*d && !isSPACE(*d))
1613 #ifdef ARG_ZERO_IS_SCRIPT
1614 if (ipathend > ipath) {
1616 * HP-UX (at least) sets argv[0] to the script name,
1617 * which makes $^X incorrect. And Digital UNIX and Linux,
1618 * at least, set argv[0] to the basename of the Perl
1619 * interpreter. So, having found "#!", we'll set it right.
1621 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1622 assert(SvPOK(x) || SvGMAGICAL(x));
1623 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1624 sv_setpvn(x, ipath, ipathend - ipath);
1627 TAINT_NOT; /* $^X is always tainted, but that's OK */
1629 #endif /* ARG_ZERO_IS_SCRIPT */
1634 d = instr(s,"perl -");
1636 d = instr(s,"perl");
1637 #ifdef ALTERNATE_SHEBANG
1639 * If the ALTERNATE_SHEBANG on this system starts with a
1640 * character that can be part of a Perl expression, then if
1641 * we see it but not "perl", we're probably looking at the
1642 * start of Perl code, not a request to hand off to some
1643 * other interpreter. Similarly, if "perl" is there, but
1644 * not in the first 'word' of the line, we assume the line
1645 * contains the start of the Perl program.
1647 if (d && *s != '#') {
1649 while (*c && !strchr("; \t\r\n\f\v#", *c))
1652 d = Nullch; /* "perl" not in first word; ignore */
1654 *s = '#'; /* Don't try to parse shebang line */
1656 #endif /* ALTERNATE_SHEBANG */
1661 !instr(s,"indir") &&
1662 instr(origargv[0],"perl"))
1668 while (s < bufend && isSPACE(*s))
1671 Newz(899,newargv,origargc+3,char*);
1673 while (s < bufend && !isSPACE(*s))
1676 Copy(origargv+1, newargv+2, origargc+1, char*);
1681 execv(ipath, newargv);
1682 croak("Can't exec %s", ipath);
1685 U32 oldpdb = perldb;
1686 bool oldn = minus_n;
1687 bool oldp = minus_p;
1689 while (*d && !isSPACE(*d)) d++;
1690 while (*d == ' ' || *d == '\t') d++;
1694 if (*d == 'M' || *d == 'm') {
1696 while (*d && !isSPACE(*d)) d++;
1697 croak("Too late for \"-%.*s\" option",
1700 d = moreswitches(d);
1702 if (PERLDB_LINE && !oldpdb ||
1703 ( minus_n || minus_p ) && !(oldn || oldp) )
1704 /* if we have already added "LINE: while (<>) {",
1705 we must not do it again */
1707 sv_setpv(linestr, "");
1708 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1709 bufend = SvPVX(linestr) + SvCUR(linestr);
1712 (void)gv_fetchfile(origfilename);
1719 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1721 lex_state = LEX_FORMLINE;
1726 warn("Illegal character \\%03o (carriage return)", '\r');
1728 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1729 case ' ': case '\t': case '\f': case 013:
1734 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1736 while (s < d && *s != '\n')
1741 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1743 lex_state = LEX_FORMLINE;
1753 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1758 while (s < bufend && (*s == ' ' || *s == '\t'))
1761 if (strnEQ(s,"=>",2)) {
1763 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1764 (int)tmp, (int)tmp);
1765 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1766 OPERATOR('-'); /* unary minus */
1768 last_uni = oldbufptr;
1769 last_lop_op = OP_FTEREAD; /* good enough */
1771 case 'r': FTST(OP_FTEREAD);
1772 case 'w': FTST(OP_FTEWRITE);
1773 case 'x': FTST(OP_FTEEXEC);
1774 case 'o': FTST(OP_FTEOWNED);
1775 case 'R': FTST(OP_FTRREAD);
1776 case 'W': FTST(OP_FTRWRITE);
1777 case 'X': FTST(OP_FTREXEC);
1778 case 'O': FTST(OP_FTROWNED);
1779 case 'e': FTST(OP_FTIS);
1780 case 'z': FTST(OP_FTZERO);
1781 case 's': FTST(OP_FTSIZE);
1782 case 'f': FTST(OP_FTFILE);
1783 case 'd': FTST(OP_FTDIR);
1784 case 'l': FTST(OP_FTLINK);
1785 case 'p': FTST(OP_FTPIPE);
1786 case 'S': FTST(OP_FTSOCK);
1787 case 'u': FTST(OP_FTSUID);
1788 case 'g': FTST(OP_FTSGID);
1789 case 'k': FTST(OP_FTSVTX);
1790 case 'b': FTST(OP_FTBLK);
1791 case 'c': FTST(OP_FTCHR);
1792 case 't': FTST(OP_FTTTY);
1793 case 'T': FTST(OP_FTTEXT);
1794 case 'B': FTST(OP_FTBINARY);
1795 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1796 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1797 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1799 croak("Unrecognized file test: -%c", (int)tmp);
1806 if (expect == XOPERATOR)
1811 else if (*s == '>') {
1814 if (isIDFIRST(*s)) {
1815 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1823 if (expect == XOPERATOR)
1826 if (isSPACE(*s) || !isSPACE(*bufptr))
1828 OPERATOR('-'); /* unary minus */
1835 if (expect == XOPERATOR)
1840 if (expect == XOPERATOR)
1843 if (isSPACE(*s) || !isSPACE(*bufptr))
1849 if (expect != XOPERATOR) {
1850 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1852 force_ident(tokenbuf, '*');
1865 if (expect == XOPERATOR) {
1870 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1873 yyerror("Final % should be \\% or %name");
1876 pending_ident = '%';
1898 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1899 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1904 if (curcop->cop_line < copline)
1905 copline = curcop->cop_line;
1916 if (lex_brackets <= 0)
1917 yyerror("Unmatched right bracket");
1920 if (lex_state == LEX_INTERPNORMAL) {
1921 if (lex_brackets == 0) {
1922 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1923 lex_state = LEX_INTERPEND;
1930 if (lex_brackets > 100) {
1931 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1932 if (newlb != lex_brackstack) {
1934 lex_brackstack = newlb;
1939 if (lex_formbrack) {
1943 if (oldoldbufptr == last_lop)
1944 lex_brackstack[lex_brackets++] = XTERM;
1946 lex_brackstack[lex_brackets++] = XOPERATOR;
1947 OPERATOR(HASHBRACK);
1949 while (s < bufend && (*s == ' ' || *s == '\t'))
1953 if (d < bufend && *d == '-') {
1956 while (d < bufend && (*d == ' ' || *d == '\t'))
1959 if (d < bufend && isIDFIRST(*d)) {
1960 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1962 while (d < bufend && (*d == ' ' || *d == '\t'))
1965 char minus = (tokenbuf[0] == '-');
1967 (keyword(tokenbuf + 1, len) ||
1968 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1969 perl_get_cv(tokenbuf + 1, FALSE) ))
1970 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1971 tokenbuf + !minus, tokenbuf + !minus);
1972 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1979 lex_brackstack[lex_brackets++] = XSTATE;
1983 lex_brackstack[lex_brackets++] = XOPERATOR;
1988 if (oldoldbufptr == last_lop)
1989 lex_brackstack[lex_brackets++] = XTERM;
1991 lex_brackstack[lex_brackets++] = XOPERATOR;
1994 OPERATOR(HASHBRACK);
1995 /* This hack serves to disambiguate a pair of curlies
1996 * as being a block or an anon hash. Normally, expectation
1997 * determines that, but in cases where we're not in a
1998 * position to expect anything in particular (like inside
1999 * eval"") we have to resolve the ambiguity. This code
2000 * covers the case where the first term in the curlies is a
2001 * quoted string. Most other cases need to be explicitly
2002 * disambiguated by prepending a `+' before the opening
2003 * curly in order to force resolution as an anon hash.
2005 * XXX should probably propagate the outer expectation
2006 * into eval"" to rely less on this hack, but that could
2007 * potentially break current behavior of eval"".
2011 if (*s == '\'' || *s == '"' || *s == '`') {
2012 /* common case: get past first string, handling escapes */
2013 for (t++; t < bufend && *t != *s;)
2014 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2018 else if (*s == 'q') {
2021 || ((*t == 'q' || *t == 'x') && ++t < bufend
2022 && !isALNUM(*t)))) {
2024 char open, close, term;
2027 while (t < bufend && isSPACE(*t))
2031 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2035 for (t++; t < bufend; t++) {
2036 if (*t == '\\' && t+1 < bufend && open != '\\')
2038 else if (*t == open)
2042 for (t++; t < bufend; t++) {
2043 if (*t == '\\' && t+1 < bufend)
2045 else if (*t == close && --brackets <= 0)
2047 else if (*t == open)
2053 else if (isALPHA(*s)) {
2054 for (t++; t < bufend && isALNUM(*t); t++) ;
2056 while (t < bufend && isSPACE(*t))
2058 /* if comma follows first term, call it an anon hash */
2059 /* XXX it could be a comma expression with loop modifiers */
2060 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2061 || (*t == '=' && t[1] == '>')))
2062 OPERATOR(HASHBRACK);
2066 lex_brackstack[lex_brackets-1] = XSTATE;
2072 yylval.ival = curcop->cop_line;
2073 if (isSPACE(*s) || *s == '#')
2074 copline = NOLINE; /* invalidate current command line number */
2079 if (lex_brackets <= 0)
2080 yyerror("Unmatched right bracket");
2082 expect = (expectation)lex_brackstack[--lex_brackets];
2083 if (lex_brackets < lex_formbrack)
2085 if (lex_state == LEX_INTERPNORMAL) {
2086 if (lex_brackets == 0) {
2087 if (lex_fakebrack) {
2088 lex_state = LEX_INTERPEND;
2090 return yylex(); /* ignore fake brackets */
2092 if (*s == '-' && s[1] == '>')
2093 lex_state = LEX_INTERPENDMAYBE;
2094 else if (*s != '[' && *s != '{')
2095 lex_state = LEX_INTERPEND;
2098 if (lex_brackets < lex_fakebrack) {
2101 return yylex(); /* ignore fake brackets */
2111 if (expect == XOPERATOR) {
2112 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2120 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2123 force_ident(tokenbuf, '&');
2127 yylval.ival = (OPpENTERSUB_AMPER<<8);
2146 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2147 warn("Reversed %c= operator",(int)tmp);
2149 if (expect == XSTATE && isALPHA(tmp) &&
2150 (s == linestart+1 || s[-2] == '\n') )
2152 if (in_eval && !rsfp) {
2157 if (strnEQ(s,"=cut",4)) {
2174 if (lex_brackets < lex_formbrack) {
2176 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2177 if (*t == '\n' || *t == '#') {
2195 if (expect != XOPERATOR) {
2196 if (s[1] != '<' && !strchr(s,'>'))
2199 s = scan_heredoc(s);
2201 s = scan_inputsymbol(s);
2202 TERM(sublex_start());
2207 SHop(OP_LEFT_SHIFT);
2221 SHop(OP_RIGHT_SHIFT);
2230 if (expect == XOPERATOR) {
2231 if (lex_formbrack && lex_brackets == lex_formbrack) {
2234 return ','; /* grandfather non-comma-format format */
2238 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2239 if (expect == XOPERATOR)
2240 no_op("Array length", bufptr);
2242 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2247 pending_ident = '#';
2251 if (expect == XOPERATOR)
2252 no_op("Scalar", bufptr);
2254 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2257 yyerror("Final $ should be \\$ or $name");
2261 /* This kludge not intended to be bulletproof. */
2262 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2263 yylval.opval = newSVOP(OP_CONST, 0,
2264 newSViv((IV)compiling.cop_arybase));
2265 yylval.opval->op_private = OPpCONST_ARYBASE;
2270 if (lex_state == LEX_NORMAL)
2273 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2279 isSPACE(*t) || isALNUM(*t) || *t == '$';
2282 bufptr = skipspace(bufptr);
2283 while (t < bufend && *t != ']')
2285 warn("Multidimensional syntax %.*s not supported",
2286 (t - bufptr) + 1, bufptr);
2290 else if (*s == '{') {
2292 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2293 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2295 char tmpbuf[sizeof tokenbuf];
2297 for (t++; isSPACE(*t); t++) ;
2298 if (isIDFIRST(*t)) {
2299 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2300 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2301 warn("You need to quote \"%s\"", tmpbuf);
2308 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2309 bool islop = (last_lop == oldoldbufptr);
2310 if (!islop || last_lop_op == OP_GREPSTART)
2312 else if (strchr("$@\"'`q", *s))
2313 expect = XTERM; /* e.g. print $fh "foo" */
2314 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2315 expect = XTERM; /* e.g. print $fh &sub */
2316 else if (isIDFIRST(*s)) {
2317 char tmpbuf[sizeof tokenbuf];
2318 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2319 if (tmp = keyword(tmpbuf, len)) {
2320 /* binary operators exclude handle interpretations */
2332 expect = XTERM; /* e.g. print $fh length() */
2337 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2338 if (gv && GvCVu(gv))
2339 expect = XTERM; /* e.g. print $fh subr() */
2342 else if (isDIGIT(*s))
2343 expect = XTERM; /* e.g. print $fh 3 */
2344 else if (*s == '.' && isDIGIT(s[1]))
2345 expect = XTERM; /* e.g. print $fh .3 */
2346 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2347 expect = XTERM; /* e.g. print $fh -1 */
2348 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2349 expect = XTERM; /* print $fh <<"EOF" */
2351 pending_ident = '$';
2355 if (expect == XOPERATOR)
2358 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2361 yyerror("Final @ should be \\@ or @name");
2364 if (lex_state == LEX_NORMAL)
2366 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2370 /* Warn about @ where they meant $. */
2372 if (*s == '[' || *s == '{') {
2374 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2376 if (*t == '}' || *t == ']') {
2378 bufptr = skipspace(bufptr);
2379 warn("Scalar value %.*s better written as $%.*s",
2380 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2385 pending_ident = '@';
2388 case '/': /* may either be division or pattern */
2389 case '?': /* may either be conditional or pattern */
2390 if (expect != XOPERATOR) {
2393 TERM(sublex_start());
2401 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2402 (s == linestart || s[-1] == '\n') ) {
2407 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2413 yylval.ival = OPf_SPECIAL;
2419 if (expect != XOPERATOR)
2424 case '0': case '1': case '2': case '3': case '4':
2425 case '5': case '6': case '7': case '8': case '9':
2427 if (expect == XOPERATOR)
2433 if (expect == XOPERATOR) {
2434 if (lex_formbrack && lex_brackets == lex_formbrack) {
2437 return ','; /* grandfather non-comma-format format */
2443 missingterm((char*)0);
2444 yylval.ival = OP_CONST;
2445 TERM(sublex_start());
2449 if (expect == XOPERATOR) {
2450 if (lex_formbrack && lex_brackets == lex_formbrack) {
2453 return ','; /* grandfather non-comma-format format */
2459 missingterm((char*)0);
2460 yylval.ival = OP_CONST;
2461 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2462 if (*d == '$' || *d == '@' || *d == '\\') {
2463 yylval.ival = OP_STRINGIFY;
2467 TERM(sublex_start());
2471 if (expect == XOPERATOR)
2472 no_op("Backticks",s);
2474 missingterm((char*)0);
2475 yylval.ival = OP_BACKTICK;
2477 TERM(sublex_start());
2481 if (dowarn && lex_inwhat && isDIGIT(*s))
2482 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2483 if (expect == XOPERATOR)
2484 no_op("Backslash",s);
2488 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2524 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2526 /* Some keywords can be followed by any delimiter, including ':' */
2527 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2528 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2529 (tokenbuf[0] == 'q' &&
2530 strchr("qwx", tokenbuf[1]))));
2532 /* x::* is just a word, unless x is "CORE" */
2533 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2537 while (d < bufend && isSPACE(*d))
2538 d++; /* no comments skipped here, or s### is misparsed */
2540 /* Is this a label? */
2541 if (!tmp && expect == XSTATE
2542 && d < bufend && *d == ':' && *(d + 1) != ':') {
2544 yylval.pval = savepv(tokenbuf);
2549 /* Check for keywords */
2550 tmp = keyword(tokenbuf, len);
2552 /* Is this a word before a => operator? */
2553 if (strnEQ(d,"=>",2)) {
2555 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2556 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2557 tokenbuf, tokenbuf);
2558 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2559 yylval.opval->op_private = OPpCONST_BARE;
2563 if (tmp < 0) { /* second-class keyword? */
2565 if (expect != XOPERATOR &&
2566 (*s != ':' || s[1] != ':') &&
2567 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2579 default: /* not a keyword */
2583 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2585 /* Get the rest if it looks like a package qualifier */
2587 if (*s == '\'' || *s == ':' && s[1] == ':') {
2588 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2591 croak("Bad name after %s::", tokenbuf);
2594 if (expect == XOPERATOR) {
2595 if (bufptr == linestart) {
2601 no_op("Bareword",s);
2604 /* Look for a subroutine with this name in current package. */
2606 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2608 /* Presume this is going to be a bareword of some sort. */
2611 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2612 yylval.opval->op_private = OPpCONST_BARE;
2614 /* See if it's the indirect object for a list operator. */
2617 oldoldbufptr < bufptr &&
2618 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2619 /* NO SKIPSPACE BEFORE HERE! */
2621 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2623 bool immediate_paren = *s == '(';
2625 /* (Now we can afford to cross potential line boundary.) */
2628 /* Two barewords in a row may indicate method call. */
2630 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2633 /* If not a declared subroutine, it's an indirect object. */
2634 /* (But it's an indir obj regardless for sort.) */
2636 if ((last_lop_op == OP_SORT ||
2637 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2638 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2639 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2644 /* If followed by a paren, it's certainly a subroutine. */
2650 if (gv && GvCVu(gv)) {
2651 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2652 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2657 nextval[nexttoke].opval = yylval.opval;
2664 /* If followed by var or block, call it a method (unless sub) */
2666 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2667 last_lop = oldbufptr;
2668 last_lop_op = OP_METHOD;
2672 /* If followed by a bareword, see if it looks like indir obj. */
2674 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2677 /* Not a method, so call it a subroutine (if defined) */
2679 if (gv && GvCVu(gv)) {
2681 if (lastchar == '-')
2682 warn("Ambiguous use of -%s resolved as -&%s()",
2683 tokenbuf, tokenbuf);
2684 last_lop = oldbufptr;
2685 last_lop_op = OP_ENTERSUB;
2686 /* Check for a constant sub */
2688 if ((sv = cv_const_sv(cv))) {
2690 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2691 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2692 yylval.opval->op_private = 0;
2696 /* Resolve to GV now. */
2697 op_free(yylval.opval);
2698 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2699 /* Is there a prototype? */
2702 char *proto = SvPV((SV*)cv, len);
2705 if (strEQ(proto, "$"))
2707 if (*proto == '&' && *s == '{') {
2708 sv_setpv(subname,"__ANON__");
2712 nextval[nexttoke].opval = yylval.opval;
2718 if (hints & HINT_STRICT_SUBS &&
2721 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2722 last_lop_op != OP_ACCEPT &&
2723 last_lop_op != OP_PIPE_OP &&
2724 last_lop_op != OP_SOCKPAIR)
2727 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2732 /* Call it a bare word */
2736 if (lastchar != '-') {
2737 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2739 warn(warn_reserved, tokenbuf);
2742 if (lastchar && strchr("*%&", lastchar)) {
2743 warn("Operator or semicolon missing before %c%s",
2744 lastchar, tokenbuf);
2745 warn("Ambiguous use of %c resolved as operator %c",
2746 lastchar, lastchar);
2752 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2753 newSVsv(GvSV(curcop->cop_filegv)));
2757 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2758 newSVpvf("%ld", (long)curcop->cop_line));
2761 case KEY___PACKAGE__:
2762 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2764 ? newSVsv(curstname)
2773 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2774 char *pname = "main";
2775 if (tokenbuf[2] == 'D')
2776 pname = HvNAME(curstash ? curstash : defstash);
2777 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2780 GvIOp(gv) = newIO();
2781 IoIFP(GvIOp(gv)) = rsfp;
2782 #if defined(HAS_FCNTL) && defined(F_SETFD)
2784 int fd = PerlIO_fileno(rsfp);
2785 fcntl(fd,F_SETFD,fd >= 3);
2788 /* Mark this internal pseudo-handle as clean */
2789 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2791 IoTYPE(GvIOp(gv)) = '|';
2792 else if ((PerlIO*)rsfp == PerlIO_stdin())
2793 IoTYPE(GvIOp(gv)) = '-';
2795 IoTYPE(GvIOp(gv)) = '<';
2805 if (expect == XSTATE) {
2812 if (*s == ':' && s[1] == ':') {
2815 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2816 tmp = keyword(tokenbuf, len);
2830 LOP(OP_ACCEPT,XTERM);
2836 LOP(OP_ATAN2,XTERM);
2845 LOP(OP_BLESS,XTERM);
2854 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2874 LOP(OP_CRYPT,XTERM);
2878 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2879 if (*d != '0' && isDIGIT(*d))
2880 yywarn("chmod: mode argument is missing initial 0");
2882 LOP(OP_CHMOD,XTERM);
2885 LOP(OP_CHOWN,XTERM);
2888 LOP(OP_CONNECT,XTERM);
2904 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2908 hints |= HINT_BLOCK_SCOPE;
2918 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2919 LOP(OP_DBMOPEN,XTERM);
2925 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2932 yylval.ival = curcop->cop_line;
2946 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2947 UNIBRACK(OP_ENTEREVAL);
2962 case KEY_endhostent:
2968 case KEY_endservent:
2971 case KEY_endprotoent:
2982 yylval.ival = curcop->cop_line;
2984 if (isIDFIRST(*s)) {
2986 if ((bufend - p) >= 3 &&
2987 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2991 croak("Missing $ on loop variable");
2996 LOP(OP_FORMLINE,XTERM);
3002 LOP(OP_FCNTL,XTERM);
3008 LOP(OP_FLOCK,XTERM);
3017 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3020 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3035 case KEY_getpriority:
3036 LOP(OP_GETPRIORITY,XTERM);
3038 case KEY_getprotobyname:
3041 case KEY_getprotobynumber:
3042 LOP(OP_GPBYNUMBER,XTERM);
3044 case KEY_getprotoent:
3056 case KEY_getpeername:
3057 UNI(OP_GETPEERNAME);
3059 case KEY_gethostbyname:
3062 case KEY_gethostbyaddr:
3063 LOP(OP_GHBYADDR,XTERM);
3065 case KEY_gethostent:
3068 case KEY_getnetbyname:
3071 case KEY_getnetbyaddr:
3072 LOP(OP_GNBYADDR,XTERM);
3077 case KEY_getservbyname:
3078 LOP(OP_GSBYNAME,XTERM);
3080 case KEY_getservbyport:
3081 LOP(OP_GSBYPORT,XTERM);
3083 case KEY_getservent:
3086 case KEY_getsockname:
3087 UNI(OP_GETSOCKNAME);
3089 case KEY_getsockopt:
3090 LOP(OP_GSOCKOPT,XTERM);
3112 yylval.ival = curcop->cop_line;
3116 LOP(OP_INDEX,XTERM);
3122 LOP(OP_IOCTL,XTERM);
3134 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3165 LOP(OP_LISTEN,XTERM);
3172 TERM(sublex_start());
3175 LOP(OP_MAPSTART,XREF);
3178 LOP(OP_MKDIR,XTERM);
3181 LOP(OP_MSGCTL,XTERM);
3184 LOP(OP_MSGGET,XTERM);
3187 LOP(OP_MSGRCV,XTERM);
3190 LOP(OP_MSGSND,XTERM);
3197 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3204 if (expect != XSTATE)
3205 yyerror("\"no\" not allowed in expression");
3206 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3207 s = force_version(s);
3216 if (isIDFIRST(*s)) {
3218 for (d = s; isALNUM(*d); d++) ;
3220 if (strchr("|&*+-=!?:.", *t))
3221 warn("Precedence problem: open %.*s should be open(%.*s)",
3227 yylval.ival = OP_OR;
3237 LOP(OP_OPEN_DIR,XTERM);
3240 checkcomma(s,tokenbuf,"filehandle");
3244 checkcomma(s,tokenbuf,"filehandle");
3263 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3267 LOP(OP_PIPE_OP,XTERM);
3272 missingterm((char*)0);
3273 yylval.ival = OP_CONST;
3274 TERM(sublex_start());
3282 missingterm((char*)0);
3283 if (dowarn && SvLEN(lex_stuff)) {
3284 d = SvPV_force(lex_stuff, len);
3285 for (; len; --len, ++d) {
3287 warn("Possible attempt to separate words with commas");
3291 warn("Possible attempt to put comments in qw() list");
3297 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3301 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3304 yylval.ival = OP_SPLIT;
3308 last_lop = oldbufptr;
3309 last_lop_op = OP_SPLIT;
3315 missingterm((char*)0);
3316 yylval.ival = OP_STRINGIFY;
3317 if (SvIVX(lex_stuff) == '\'')
3318 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3319 TERM(sublex_start());
3324 missingterm((char*)0);
3325 yylval.ival = OP_BACKTICK;
3327 TERM(sublex_start());
3334 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3335 if (isIDFIRST(*tokenbuf))
3336 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3338 yyerror("<> should be quotes");
3345 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3349 LOP(OP_RENAME,XTERM);
3358 LOP(OP_RINDEX,XTERM);
3381 LOP(OP_REVERSE,XTERM);
3392 TERM(sublex_start());
3394 TOKEN(1); /* force error */
3403 LOP(OP_SELECT,XTERM);
3409 LOP(OP_SEMCTL,XTERM);
3412 LOP(OP_SEMGET,XTERM);
3415 LOP(OP_SEMOP,XTERM);
3421 LOP(OP_SETPGRP,XTERM);
3423 case KEY_setpriority:
3424 LOP(OP_SETPRIORITY,XTERM);
3426 case KEY_sethostent:
3432 case KEY_setservent:
3435 case KEY_setprotoent:
3445 LOP(OP_SEEKDIR,XTERM);
3447 case KEY_setsockopt:
3448 LOP(OP_SSOCKOPT,XTERM);
3454 LOP(OP_SHMCTL,XTERM);
3457 LOP(OP_SHMGET,XTERM);
3460 LOP(OP_SHMREAD,XTERM);
3463 LOP(OP_SHMWRITE,XTERM);
3466 LOP(OP_SHUTDOWN,XTERM);
3475 LOP(OP_SOCKET,XTERM);
3477 case KEY_socketpair:
3478 LOP(OP_SOCKPAIR,XTERM);
3481 checkcomma(s,tokenbuf,"subroutine name");
3483 if (*s == ';' || *s == ')') /* probably a close */
3484 croak("sort is now a reserved word");
3486 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3490 LOP(OP_SPLIT,XTERM);
3493 LOP(OP_SPRINTF,XTERM);
3496 LOP(OP_SPLICE,XTERM);
3512 LOP(OP_SUBSTR,XTERM);
3519 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3520 char tmpbuf[sizeof tokenbuf];
3522 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3523 if (strchr(tmpbuf, ':'))
3524 sv_setpv(subname, tmpbuf);
3526 sv_setsv(subname,curstname);
3527 sv_catpvn(subname,"::",2);
3528 sv_catpvn(subname,tmpbuf,len);
3530 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3534 expect = XTERMBLOCK;
3535 sv_setpv(subname,"?");
3538 if (tmp == KEY_format) {
3541 lex_formbrack = lex_brackets + 1;
3545 /* Look for a prototype */
3552 SvREFCNT_dec(lex_stuff);
3554 croak("Prototype not terminated");
3557 d = SvPVX(lex_stuff);
3559 for (p = d; *p; ++p) {
3564 SvCUR(lex_stuff) = tmp;
3567 nextval[1] = nextval[0];
3568 nexttype[1] = nexttype[0];
3569 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3570 nexttype[0] = THING;
3571 if (nexttoke == 1) {
3572 lex_defer = lex_state;
3573 lex_expect = expect;
3574 lex_state = LEX_KNOWNEXT;
3579 if (*SvPV(subname,na) == '?') {
3580 sv_setpv(subname,"__ANON__");
3587 LOP(OP_SYSTEM,XREF);
3590 LOP(OP_SYMLINK,XTERM);
3593 LOP(OP_SYSCALL,XTERM);
3596 LOP(OP_SYSOPEN,XTERM);
3599 LOP(OP_SYSSEEK,XTERM);
3602 LOP(OP_SYSREAD,XTERM);
3605 LOP(OP_SYSWRITE,XTERM);
3609 TERM(sublex_start());
3630 LOP(OP_TRUNCATE,XTERM);
3642 yylval.ival = curcop->cop_line;
3646 yylval.ival = curcop->cop_line;
3650 LOP(OP_UNLINK,XTERM);
3656 LOP(OP_UNPACK,XTERM);
3659 LOP(OP_UTIME,XTERM);
3663 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3664 if (*d != '0' && isDIGIT(*d))
3665 yywarn("umask: argument is missing initial 0");
3670 LOP(OP_UNSHIFT,XTERM);
3673 if (expect != XSTATE)
3674 yyerror("\"use\" not allowed in expression");
3677 s = force_version(s);
3678 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3679 nextval[nexttoke].opval = Nullop;
3684 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3685 s = force_version(s);
3698 yylval.ival = curcop->cop_line;
3702 hints |= HINT_BLOCK_SCOPE;
3709 LOP(OP_WAITPID,XTERM);
3715 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3719 if (expect == XOPERATOR)
3725 yylval.ival = OP_XOR;
3730 TERM(sublex_start());
3743 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3744 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3745 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3746 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3747 if (strEQ(d,"__END__")) return KEY___END__;
3751 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3756 if (strEQ(d,"and")) return -KEY_and;
3757 if (strEQ(d,"abs")) return -KEY_abs;
3760 if (strEQ(d,"alarm")) return -KEY_alarm;
3761 if (strEQ(d,"atan2")) return -KEY_atan2;
3764 if (strEQ(d,"accept")) return -KEY_accept;
3769 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3772 if (strEQ(d,"bless")) return -KEY_bless;
3773 if (strEQ(d,"bind")) return -KEY_bind;
3774 if (strEQ(d,"binmode")) return -KEY_binmode;
3777 if (strEQ(d,"CORE")) return -KEY_CORE;
3782 if (strEQ(d,"cmp")) return -KEY_cmp;
3783 if (strEQ(d,"chr")) return -KEY_chr;
3784 if (strEQ(d,"cos")) return -KEY_cos;
3787 if (strEQ(d,"chop")) return KEY_chop;
3790 if (strEQ(d,"close")) return -KEY_close;
3791 if (strEQ(d,"chdir")) return -KEY_chdir;
3792 if (strEQ(d,"chomp")) return KEY_chomp;
3793 if (strEQ(d,"chmod")) return -KEY_chmod;
3794 if (strEQ(d,"chown")) return -KEY_chown;
3795 if (strEQ(d,"crypt")) return -KEY_crypt;
3798 if (strEQ(d,"chroot")) return -KEY_chroot;
3799 if (strEQ(d,"caller")) return -KEY_caller;
3802 if (strEQ(d,"connect")) return -KEY_connect;
3805 if (strEQ(d,"closedir")) return -KEY_closedir;
3806 if (strEQ(d,"continue")) return -KEY_continue;
3811 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3816 if (strEQ(d,"do")) return KEY_do;
3819 if (strEQ(d,"die")) return -KEY_die;
3822 if (strEQ(d,"dump")) return -KEY_dump;
3825 if (strEQ(d,"delete")) return KEY_delete;
3828 if (strEQ(d,"defined")) return KEY_defined;
3829 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3832 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3837 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3838 if (strEQ(d,"END")) return KEY_END;
3843 if (strEQ(d,"eq")) return -KEY_eq;
3846 if (strEQ(d,"eof")) return -KEY_eof;
3847 if (strEQ(d,"exp")) return -KEY_exp;
3850 if (strEQ(d,"else")) return KEY_else;
3851 if (strEQ(d,"exit")) return -KEY_exit;
3852 if (strEQ(d,"eval")) return KEY_eval;
3853 if (strEQ(d,"exec")) return -KEY_exec;
3854 if (strEQ(d,"each")) return KEY_each;
3857 if (strEQ(d,"elsif")) return KEY_elsif;
3860 if (strEQ(d,"exists")) return KEY_exists;
3861 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3864 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3865 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3868 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3871 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3872 if (strEQ(d,"endservent")) return -KEY_endservent;
3875 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3882 if (strEQ(d,"for")) return KEY_for;
3885 if (strEQ(d,"fork")) return -KEY_fork;
3888 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3889 if (strEQ(d,"flock")) return -KEY_flock;
3892 if (strEQ(d,"format")) return KEY_format;
3893 if (strEQ(d,"fileno")) return -KEY_fileno;
3896 if (strEQ(d,"foreach")) return KEY_foreach;
3899 if (strEQ(d,"formline")) return -KEY_formline;
3905 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3906 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3910 if (strnEQ(d,"get",3)) {
3915 if (strEQ(d,"ppid")) return -KEY_getppid;
3916 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3919 if (strEQ(d,"pwent")) return -KEY_getpwent;
3920 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3921 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3924 if (strEQ(d,"peername")) return -KEY_getpeername;
3925 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3926 if (strEQ(d,"priority")) return -KEY_getpriority;
3929 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3932 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3936 else if (*d == 'h') {
3937 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3938 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3939 if (strEQ(d,"hostent")) return -KEY_gethostent;
3941 else if (*d == 'n') {
3942 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3943 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3944 if (strEQ(d,"netent")) return -KEY_getnetent;
3946 else if (*d == 's') {
3947 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3948 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3949 if (strEQ(d,"servent")) return -KEY_getservent;
3950 if (strEQ(d,"sockname")) return -KEY_getsockname;
3951 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3953 else if (*d == 'g') {
3954 if (strEQ(d,"grent")) return -KEY_getgrent;
3955 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3956 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3958 else if (*d == 'l') {
3959 if (strEQ(d,"login")) return -KEY_getlogin;
3961 else if (strEQ(d,"c")) return -KEY_getc;
3966 if (strEQ(d,"gt")) return -KEY_gt;
3967 if (strEQ(d,"ge")) return -KEY_ge;
3970 if (strEQ(d,"grep")) return KEY_grep;
3971 if (strEQ(d,"goto")) return KEY_goto;
3972 if (strEQ(d,"glob")) return -KEY_glob;
3975 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3980 if (strEQ(d,"hex")) return -KEY_hex;
3985 if (strEQ(d,"if")) return KEY_if;
3988 if (strEQ(d,"int")) return -KEY_int;
3991 if (strEQ(d,"index")) return -KEY_index;
3992 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3997 if (strEQ(d,"join")) return -KEY_join;
4001 if (strEQ(d,"keys")) return KEY_keys;
4002 if (strEQ(d,"kill")) return -KEY_kill;
4007 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4008 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4014 if (strEQ(d,"lt")) return -KEY_lt;
4015 if (strEQ(d,"le")) return -KEY_le;
4016 if (strEQ(d,"lc")) return -KEY_lc;
4019 if (strEQ(d,"log")) return -KEY_log;
4022 if (strEQ(d,"last")) return KEY_last;
4023 if (strEQ(d,"link")) return -KEY_link;
4026 if (strEQ(d,"local")) return KEY_local;
4027 if (strEQ(d,"lstat")) return -KEY_lstat;
4030 if (strEQ(d,"length")) return -KEY_length;
4031 if (strEQ(d,"listen")) return -KEY_listen;
4034 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4037 if (strEQ(d,"localtime")) return -KEY_localtime;
4043 case 1: return KEY_m;
4045 if (strEQ(d,"my")) return KEY_my;
4048 if (strEQ(d,"map")) return KEY_map;
4051 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4054 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4055 if (strEQ(d,"msgget")) return -KEY_msgget;
4056 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4057 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4062 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4065 if (strEQ(d,"next")) return KEY_next;
4066 if (strEQ(d,"ne")) return -KEY_ne;
4067 if (strEQ(d,"not")) return -KEY_not;
4068 if (strEQ(d,"no")) return KEY_no;
4073 if (strEQ(d,"or")) return -KEY_or;
4076 if (strEQ(d,"ord")) return -KEY_ord;
4077 if (strEQ(d,"oct")) return -KEY_oct;
4080 if (strEQ(d,"open")) return -KEY_open;
4083 if (strEQ(d,"opendir")) return -KEY_opendir;
4090 if (strEQ(d,"pop")) return KEY_pop;
4091 if (strEQ(d,"pos")) return KEY_pos;
4094 if (strEQ(d,"push")) return KEY_push;
4095 if (strEQ(d,"pack")) return -KEY_pack;
4096 if (strEQ(d,"pipe")) return -KEY_pipe;
4099 if (strEQ(d,"print")) return KEY_print;
4102 if (strEQ(d,"printf")) return KEY_printf;
4105 if (strEQ(d,"package")) return KEY_package;
4108 if (strEQ(d,"prototype")) return KEY_prototype;
4113 if (strEQ(d,"q")) return KEY_q;
4114 if (strEQ(d,"qq")) return KEY_qq;
4115 if (strEQ(d,"qw")) return KEY_qw;
4116 if (strEQ(d,"qx")) return KEY_qx;
4118 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4123 if (strEQ(d,"ref")) return -KEY_ref;
4126 if (strEQ(d,"read")) return -KEY_read;
4127 if (strEQ(d,"rand")) return -KEY_rand;
4128 if (strEQ(d,"recv")) return -KEY_recv;
4129 if (strEQ(d,"redo")) return KEY_redo;
4132 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4133 if (strEQ(d,"reset")) return -KEY_reset;
4136 if (strEQ(d,"return")) return KEY_return;
4137 if (strEQ(d,"rename")) return -KEY_rename;
4138 if (strEQ(d,"rindex")) return -KEY_rindex;
4141 if (strEQ(d,"require")) return -KEY_require;
4142 if (strEQ(d,"reverse")) return -KEY_reverse;
4143 if (strEQ(d,"readdir")) return -KEY_readdir;
4146 if (strEQ(d,"readlink")) return -KEY_readlink;
4147 if (strEQ(d,"readline")) return -KEY_readline;
4148 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4151 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4157 case 0: return KEY_s;
4159 if (strEQ(d,"scalar")) return KEY_scalar;
4164 if (strEQ(d,"seek")) return -KEY_seek;
4165 if (strEQ(d,"send")) return -KEY_send;
4168 if (strEQ(d,"semop")) return -KEY_semop;
4171 if (strEQ(d,"select")) return -KEY_select;
4172 if (strEQ(d,"semctl")) return -KEY_semctl;
4173 if (strEQ(d,"semget")) return -KEY_semget;
4176 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4177 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4180 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4181 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4184 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4187 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4188 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4189 if (strEQ(d,"setservent")) return -KEY_setservent;
4192 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4193 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4200 if (strEQ(d,"shift")) return KEY_shift;
4203 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4204 if (strEQ(d,"shmget")) return -KEY_shmget;
4207 if (strEQ(d,"shmread")) return -KEY_shmread;
4210 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4211 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4216 if (strEQ(d,"sin")) return -KEY_sin;
4219 if (strEQ(d,"sleep")) return -KEY_sleep;
4222 if (strEQ(d,"sort")) return KEY_sort;
4223 if (strEQ(d,"socket")) return -KEY_socket;
4224 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4227 if (strEQ(d,"split")) return KEY_split;
4228 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4229 if (strEQ(d,"splice")) return KEY_splice;
4232 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4235 if (strEQ(d,"srand")) return -KEY_srand;
4238 if (strEQ(d,"stat")) return -KEY_stat;
4239 if (strEQ(d,"study")) return KEY_study;
4242 if (strEQ(d,"substr")) return -KEY_substr;
4243 if (strEQ(d,"sub")) return KEY_sub;
4248 if (strEQ(d,"system")) return -KEY_system;
4251 if (strEQ(d,"symlink")) return -KEY_symlink;
4252 if (strEQ(d,"syscall")) return -KEY_syscall;
4253 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4254 if (strEQ(d,"sysread")) return -KEY_sysread;
4255 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4258 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4267 if (strEQ(d,"tr")) return KEY_tr;
4270 if (strEQ(d,"tie")) return KEY_tie;
4273 if (strEQ(d,"tell")) return -KEY_tell;
4274 if (strEQ(d,"tied")) return KEY_tied;
4275 if (strEQ(d,"time")) return -KEY_time;
4278 if (strEQ(d,"times")) return -KEY_times;
4281 if (strEQ(d,"telldir")) return -KEY_telldir;
4284 if (strEQ(d,"truncate")) return -KEY_truncate;
4291 if (strEQ(d,"uc")) return -KEY_uc;
4294 if (strEQ(d,"use")) return KEY_use;
4297 if (strEQ(d,"undef")) return KEY_undef;
4298 if (strEQ(d,"until")) return KEY_until;
4299 if (strEQ(d,"untie")) return KEY_untie;
4300 if (strEQ(d,"utime")) return -KEY_utime;
4301 if (strEQ(d,"umask")) return -KEY_umask;
4304 if (strEQ(d,"unless")) return KEY_unless;
4305 if (strEQ(d,"unpack")) return -KEY_unpack;
4306 if (strEQ(d,"unlink")) return -KEY_unlink;
4309 if (strEQ(d,"unshift")) return KEY_unshift;
4310 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4315 if (strEQ(d,"values")) return -KEY_values;
4316 if (strEQ(d,"vec")) return -KEY_vec;
4321 if (strEQ(d,"warn")) return -KEY_warn;
4322 if (strEQ(d,"wait")) return -KEY_wait;
4325 if (strEQ(d,"while")) return KEY_while;
4326 if (strEQ(d,"write")) return -KEY_write;
4329 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4332 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4337 if (len == 1) return -KEY_x;
4338 if (strEQ(d,"xor")) return -KEY_xor;
4341 if (len == 1) return KEY_y;
4350 checkcomma(s,name,what)
4357 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4359 for (w = s+2; *w && level; w++) {
4366 for (; *w && isSPACE(*w); w++) ;
4367 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4368 warn("%s (...) interpreted as function",name);
4370 while (s < bufend && isSPACE(*s))
4374 while (s < bufend && isSPACE(*s))
4376 if (isIDFIRST(*s)) {
4380 while (s < bufend && isSPACE(*s))
4385 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4389 croak("No comma allowed after %s", what);
4395 scan_word(s, dest, destlen, allow_package, slp)
4402 register char *d = dest;
4403 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4406 croak(ident_too_long);
4409 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4414 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4427 scan_ident(s, send, dest, destlen, ck_uni)
4429 register char *send;
4439 if (lex_brackets == 0)
4444 e = d + destlen - 3; /* two-character token, ending NUL */
4446 while (isDIGIT(*s)) {
4448 croak(ident_too_long);
4455 croak(ident_too_long);
4458 else if (*s == '\'' && isIDFIRST(s[1])) {
4463 else if (*s == ':' && s[1] == ':') {
4474 if (lex_state != LEX_NORMAL)
4475 lex_state = LEX_INTERPENDMAYBE;
4478 if (*s == '$' && s[1] &&
4479 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4481 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4482 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4495 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4500 if (isSPACE(s[-1])) {
4503 if (ch != ' ' && ch != '\t') {
4509 if (isIDFIRST(*d)) {
4511 while (isALNUM(*s) || *s == ':')
4514 while (s < send && (*s == ' ' || *s == '\t')) s++;
4515 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4516 if (dowarn && keyword(dest, d - dest)) {
4517 char *brack = *s == '[' ? "[...]" : "{...}";
4518 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4519 funny, dest, brack, funny, dest, brack);
4521 lex_fakebrack = lex_brackets+1;
4523 lex_brackstack[lex_brackets++] = XOPERATOR;
4529 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4530 lex_state = LEX_INTERPEND;
4533 if (dowarn && lex_state == LEX_NORMAL &&
4534 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4535 warn("Ambiguous use of %c{%s} resolved to %c%s",
4536 funny, dest, funny, dest);
4539 s = bracket; /* let the parser handle it */
4543 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4544 lex_state = LEX_INTERPEND;
4548 void pmflag(pmfl,ch)
4555 *pmfl |= PMf_GLOBAL;
4557 *pmfl |= PMf_CONTINUE;
4561 *pmfl |= PMf_MULTILINE;
4563 *pmfl |= PMf_SINGLELINE;
4565 *pmfl |= PMf_EXTENDED;
4575 s = scan_str(start);
4578 SvREFCNT_dec(lex_stuff);
4580 croak("Search pattern not terminated");
4583 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4584 if (multi_open == '?')
4585 pm->op_pmflags |= PMf_ONCE;
4586 while (*s && strchr("iogcmsx", *s))
4587 pmflag(&pm->op_pmflags,*s++);
4588 pm->op_pmpermflags = pm->op_pmflags;
4591 yylval.ival = OP_MATCH;
4604 yylval.ival = OP_NULL;
4606 s = scan_str(start);
4610 SvREFCNT_dec(lex_stuff);
4612 croak("Substitution pattern not terminated");
4615 if (s[-1] == multi_open)
4618 first_start = multi_start;
4622 SvREFCNT_dec(lex_stuff);
4625 SvREFCNT_dec(lex_repl);
4627 croak("Substitution replacement not terminated");
4629 multi_start = first_start; /* so whole substitution is taken together */
4631 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4632 while (*s && strchr("iogcmsex", *s)) {
4638 pmflag(&pm->op_pmflags,*s++);
4643 pm->op_pmflags |= PMf_EVAL;
4644 repl = newSVpv("",0);
4646 sv_catpv(repl, es ? "eval " : "do ");
4647 sv_catpvn(repl, "{ ", 2);
4648 sv_catsv(repl, lex_repl);
4649 sv_catpvn(repl, " };", 2);
4650 SvCOMPILED_on(repl);
4651 SvREFCNT_dec(lex_repl);
4655 pm->op_pmpermflags = pm->op_pmflags;
4657 yylval.ival = OP_SUBST;
4665 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4666 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4668 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4669 pm->op_pmflags |= PMf_SCANFIRST;
4670 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4671 pm->op_pmslen = SvCUR(pm->op_pmshort);
4673 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4674 if (pm->op_pmshort &&
4675 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4677 if (pm->op_pmflags & PMf_SCANFIRST) {
4678 SvREFCNT_dec(pm->op_pmshort);
4679 pm->op_pmshort = Nullsv;
4682 SvREFCNT_dec(pm->op_pmregexp->regmust);
4683 pm->op_pmregexp->regmust = Nullsv;
4687 /* promote the better string */
4688 if ((!pm->op_pmshort &&
4689 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4690 ((pm->op_pmflags & PMf_SCANFIRST) &&
4691 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4692 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4693 pm->op_pmshort = pm->op_pmregexp->regmust;
4694 pm->op_pmslen = SvCUR(pm->op_pmshort);
4695 pm->op_pmregexp->regmust = Nullsv;
4696 pm->op_pmflags |= PMf_SCANFIRST;
4712 yylval.ival = OP_NULL;
4714 s = scan_str(start);
4717 SvREFCNT_dec(lex_stuff);
4719 croak("Translation pattern not terminated");
4721 if (s[-1] == multi_open)
4727 SvREFCNT_dec(lex_stuff);
4730 SvREFCNT_dec(lex_repl);
4732 croak("Translation replacement not terminated");
4735 New(803,tbl,256,short);
4736 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4738 complement = delete = squash = 0;
4739 while (*s == 'c' || *s == 'd' || *s == 's') {
4741 complement = OPpTRANS_COMPLEMENT;
4743 delete = OPpTRANS_DELETE;
4745 squash = OPpTRANS_SQUASH;
4748 op->op_private = delete|squash|complement;
4751 yylval.ival = OP_TRANS;
4760 I32 op_type = OP_SCALAR;
4767 int outer = (rsfp && !lex_inwhat);
4771 e = tokenbuf + sizeof tokenbuf - 1;
4774 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4775 if (*peek && strchr("`'\"",*peek)) {
4778 s = delimcpy(d, e, s, bufend, term, &len);
4789 deprecate("bare << to mean <<\"\"");
4790 for (; isALNUM(*s); s++) {
4795 if (d >= tokenbuf + sizeof tokenbuf - 1)
4796 croak("Delimiter for here document is too long");
4801 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4802 herewas = newSVpv(s,bufend-s);
4804 s--, herewas = newSVpv(s,d-s);
4805 s += SvCUR(herewas);
4807 tmpstr = NEWSV(87,80);
4808 sv_upgrade(tmpstr, SVt_PVIV);
4813 else if (term == '`') {
4814 op_type = OP_BACKTICK;
4815 SvIVX(tmpstr) = '\\';
4819 multi_start = curcop->cop_line;
4820 multi_open = multi_close = '<';
4824 while (s < bufend &&
4825 (*s != term || memNE(s,tokenbuf,len)) ) {
4830 curcop->cop_line = multi_start;
4831 missingterm(tokenbuf);
4833 sv_setpvn(tmpstr,d+1,s-d);
4835 sv_catpvn(herewas,s,bufend-s);
4836 sv_setsv(linestr,herewas);
4837 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4838 bufend = SvPVX(linestr) + SvCUR(linestr);
4841 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4842 while (s >= bufend) { /* multiple line string? */
4844 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4845 curcop->cop_line = multi_start;
4846 missingterm(tokenbuf);
4849 if (PERLDB_LINE && curstash != debstash) {
4850 SV *sv = NEWSV(88,0);
4852 sv_upgrade(sv, SVt_PVMG);
4853 sv_setsv(sv,linestr);
4854 av_store(GvAV(curcop->cop_filegv),
4855 (I32)curcop->cop_line,sv);
4857 bufend = SvPVX(linestr) + SvCUR(linestr);
4858 if (*s == term && memEQ(s,tokenbuf,len)) {
4861 sv_catsv(linestr,herewas);
4862 bufend = SvPVX(linestr) + SvCUR(linestr);
4866 sv_catsv(tmpstr,linestr);
4869 multi_end = curcop->cop_line;
4871 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4872 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4873 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4875 SvREFCNT_dec(herewas);
4877 yylval.ival = op_type;
4882 scan_inputsymbol(start)
4885 register char *s = start;
4891 e = tokenbuf + sizeof tokenbuf;
4892 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4893 if (len >= sizeof tokenbuf)
4894 croak("Excessively long <> operator");
4896 croak("Unterminated <> operator");
4898 if (*d == '$' && d[1]) d++;
4899 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4901 if (d - tokenbuf != len) {
4902 yylval.ival = OP_GLOB;
4904 s = scan_str(start);
4906 croak("Glob not terminated");
4912 (void)strcpy(d,"ARGV");
4915 if (tmp = pad_findmy(d)) {
4916 OP *op = newOP(OP_PADSV, 0);
4918 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4921 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4922 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4923 newUNOP(OP_RV2GV, 0,
4924 newUNOP(OP_RV2SV, 0,
4925 newGVOP(OP_GV, 0, gv))));
4927 yylval.ival = OP_NULL;
4930 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4931 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4932 yylval.ival = OP_NULL;
4944 register char *s = start;
4950 /* "#" is allowed as delimiter if on same line */
4951 while (*s == ' ' || *s == '\t')
4958 multi_start = curcop->cop_line;
4960 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4965 sv_upgrade(sv, SVt_PVIV);
4967 (void)SvPOK_only(sv); /* validate pointer */
4970 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4971 to = SvPVX(sv)+SvCUR(sv);
4972 if (multi_open == multi_close) {
4973 for (; s < bufend; s++,to++) {
4974 if (*s == '\n' && !rsfp)
4976 if (*s == '\\' && s+1 < bufend && term != '\\') {
4982 else if (*s == term)
4988 for (; s < bufend; s++,to++) {
4989 if (*s == '\n' && !rsfp)
4991 if (*s == '\\' && s+1 < bufend) {
4992 if ((s[1] == multi_open) || (s[1] == multi_close))
4997 else if (*s == multi_close && --brackets <= 0)
4999 else if (*s == multi_open)
5005 SvCUR_set(sv, to - SvPVX(sv));
5007 if (s < bufend) break; /* string ends on this line? */
5010 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5012 curcop->cop_line = multi_start;
5016 if (PERLDB_LINE && curstash != debstash) {
5017 SV *sv = NEWSV(88,0);
5019 sv_upgrade(sv, SVt_PVMG);
5020 sv_setsv(sv,linestr);
5021 av_store(GvAV(curcop->cop_filegv),
5022 (I32)curcop->cop_line, sv);
5024 bufend = SvPVX(linestr) + SvCUR(linestr);
5026 multi_end = curcop->cop_line;
5028 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5029 SvLEN_set(sv, SvCUR(sv) + 1);
5030 Renew(SvPVX(sv), SvLEN(sv), char);
5043 register char *s = start;
5051 static char number_too_long[] = "Number too long";
5055 croak("panic: scan_num");
5060 bool overflowed = FALSE;
5066 else if (s[1] == '.')
5082 yyerror("Illegal octal digit");
5084 case '0': case '1': case '2': case '3': case '4':
5085 case '5': case '6': case '7':
5088 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5089 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5095 if (!overflowed && (n >> shift) != u) {
5096 warn("Integer overflow in %s number",
5097 (shift == 4) ? "hex" : "octal");
5109 case '1': case '2': case '3': case '4': case '5':
5110 case '6': case '7': case '8': case '9': case '.':
5113 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5115 while (isDIGIT(*s) || *s == '_') {
5117 if (dowarn && lastub && s - lastub != 3)
5118 warn("Misplaced _ in number");
5123 croak(number_too_long);
5127 if (dowarn && lastub && s - lastub != 3)
5128 warn("Misplaced _ in number");
5129 if (*s == '.' && s[1] != '.') {
5132 for (; isDIGIT(*s) || *s == '_'; s++) {
5134 croak(number_too_long);
5139 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5142 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5143 if (*s == '+' || *s == '-')
5145 while (isDIGIT(*s)) {
5147 croak(number_too_long);
5153 SET_NUMERIC_STANDARD();
5154 value = atof(tokenbuf);
5156 if (!floatit && (double)tryiv == value)
5157 sv_setiv(sv, tryiv);
5159 sv_setnv(sv, value);
5163 yylval.opval = newSVOP(OP_CONST, 0, sv);
5174 SV *stuff = newSVpv("",0);
5175 bool needargs = FALSE;
5178 if (*s == '.' || *s == '}') {
5180 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5184 if (in_eval && !rsfp) {
5185 eol = strchr(s,'\n');
5190 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5192 for (t = s; t < eol; t++) {
5193 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5195 goto enough; /* ~~ must be first line in formline */
5197 if (*t == '@' || *t == '^')
5200 sv_catpvn(stuff, s, eol-s);
5204 s = filter_gets(linestr, rsfp, 0);
5205 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5206 bufend = bufptr + SvCUR(linestr);
5209 yyerror("Format not terminated");
5219 lex_state = LEX_NORMAL;
5220 nextval[nexttoke].ival = 0;
5224 lex_state = LEX_FORMLINE;
5225 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5227 nextval[nexttoke].ival = OP_FORMLINE;
5231 SvREFCNT_dec(stuff);
5243 cshlen = strlen(cshname);
5248 start_subparse(is_format, flags)
5252 I32 oldsavestack_ix = savestack_ix;
5253 CV* outsidecv = compcv;
5257 assert(SvTYPE(compcv) == SVt_PVCV);
5264 SAVESPTR(comppad_name);
5266 SAVEI32(comppad_name_fill);
5267 SAVEI32(min_intro_pending);
5268 SAVEI32(max_intro_pending);
5269 SAVEI32(pad_reset_pending);
5271 compcv = (CV*)NEWSV(1104,0);
5272 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5273 CvFLAGS(compcv) |= flags;
5276 comppad_name = newAV();
5277 comppad_name_fill = 0;
5278 min_intro_pending = 0;
5279 av_push(comppad, Nullsv);
5280 curpad = AvARRAY(comppad);
5282 subline = curcop->cop_line;
5284 comppadlist = newAV();
5285 AvREAL_off(comppadlist);
5286 av_store(comppadlist, 0, (SV*)comppad_name);
5287 av_store(comppadlist, 1, (SV*)comppad);
5289 CvPADLIST(compcv) = comppadlist;
5290 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5292 return oldsavestack_ix;
5311 char *context = NULL;
5315 if (!yychar || (yychar == ';' && !rsfp))
5317 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5318 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5319 while (isSPACE(*oldoldbufptr))
5321 context = oldoldbufptr;
5322 contlen = bufptr - oldoldbufptr;
5324 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5325 oldbufptr != bufptr) {
5326 while (isSPACE(*oldbufptr))
5328 context = oldbufptr;
5329 contlen = bufptr - oldbufptr;
5331 else if (yychar > 255)
5332 where = "next token ???";
5333 else if ((yychar & 127) == 127) {
5334 if (lex_state == LEX_NORMAL ||
5335 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5336 where = "at end of line";
5338 where = "within pattern";
5340 where = "within string";
5343 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5345 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5346 else if (isPRINT_LC(yychar))
5347 sv_catpvf(where_sv, "%c", yychar);
5349 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5350 where = SvPVX(where_sv);
5352 msg = sv_2mortal(newSVpv(s, 0));
5353 sv_catpvf(msg, " at %_ line %ld, ",
5354 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5356 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5358 sv_catpvf(msg, "%s\n", where);
5359 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5361 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5362 (int)multi_open,(int)multi_close,(long)multi_start);
5368 sv_catsv(GvSV(errgv), msg);
5370 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5371 if (++error_count >= 10)
5372 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));