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;
354 if (lex_formbrack && lex_brackets <= lex_formbrack) {
355 while (s < bufend && (*s == ' ' || *s == '\t'))
361 while (s < bufend && isSPACE(*s))
363 if (s < bufend && *s == '#') {
364 while (s < bufend && *s != '\n')
369 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
371 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
372 if (minus_n || minus_p) {
373 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
374 sv_catpv(linestr,";}");
375 minus_n = minus_p = 0;
378 sv_setpv(linestr,";");
379 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
380 bufend = SvPVX(linestr) + SvCUR(linestr);
381 if (preprocess && !in_eval)
382 (void)my_pclose(rsfp);
383 else if ((PerlIO*)rsfp == PerlIO_stdin())
384 PerlIO_clearerr(rsfp);
386 (void)PerlIO_close(rsfp);
390 linestart = bufptr = s + prevlen;
391 bufend = s + SvCUR(linestr);
394 if (perldb && curstash != debstash) {
395 SV *sv = NEWSV(85,0);
397 sv_upgrade(sv, SVt_PVMG);
398 sv_setpvn(sv,bufptr,bufend-bufptr);
399 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
410 if (oldoldbufptr != last_uni)
412 while (isSPACE(*last_uni))
414 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
415 if ((t = strchr(s, '(')) && t < bufptr)
419 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
426 #define UNI(f) return uni(f,s)
436 last_uni = oldbufptr;
447 #endif /* CRIPPLED_CC */
449 #define LOP(f,x) return lop(f,x,s)
454 (I32 f, expectation x, char *s)
460 #endif /* CAN_PROTOTYPE */
466 last_lop = oldbufptr;
483 nexttype[nexttoke] = type;
485 if (lex_state != LEX_KNOWNEXT) {
486 lex_defer = lex_state;
488 lex_state = LEX_KNOWNEXT;
493 force_word(start,token,check_keyword,allow_pack,allow_tick)
494 register char *start;
503 start = skipspace(start);
506 (allow_pack && *s == ':') ||
507 (allow_tick && *s == '\'') )
509 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
510 if (check_keyword && keyword(tokenbuf, len))
512 if (token == METHOD) {
522 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
523 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
535 OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
536 nextval[nexttoke].opval = o;
539 dTHR; /* just for in_eval */
540 o->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 */
1237 if (pending_ident) {
1238 char pit = pending_ident;
1242 if (strchr(tokenbuf,':'))
1243 croak(no_myglob,tokenbuf);
1244 yylval.opval = newOP(OP_PADANY, 0);
1245 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1249 if (!strchr(tokenbuf,':')
1250 && (tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1251 if (last_lop_op == OP_SORT &&
1252 tokenbuf[0] == '$' &&
1253 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1256 for (d = in_eval ? oldoldbufptr : linestart;
1257 d < bufend && *d != '\n';
1260 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1261 croak("Can't use \"my %s\" in sort comparison",
1267 yylval.opval = newOP(OP_PADANY, 0);
1268 yylval.opval->op_targ = tmp;
1272 /* Force them to make up their mind on "@foo". */
1273 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1274 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1275 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1276 yyerror(form("In string, %s now must be written as \\%s",
1277 tokenbuf, tokenbuf));
1280 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1281 yylval.opval->op_private = OPpCONST_ENTERED;
1282 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1283 ((tokenbuf[0] == '$') ? SVt_PV
1284 : (tokenbuf[0] == '@') ? SVt_PVAV
1289 switch (lex_state) {
1291 case LEX_NORMAL: /* Some compilers will produce faster */
1292 case LEX_INTERPNORMAL: /* code if we comment these out. */
1298 yylval = nextval[nexttoke];
1300 lex_state = lex_defer;
1301 expect = lex_expect;
1302 lex_defer = LEX_NORMAL;
1304 return(nexttype[nexttoke]);
1306 case LEX_INTERPCASEMOD:
1308 if (bufptr != bufend && *bufptr != '\\')
1309 croak("panic: INTERPCASEMOD");
1311 if (bufptr == bufend || bufptr[1] == 'E') {
1314 oldmod = lex_casestack[--lex_casemods];
1315 lex_casestack[lex_casemods] = '\0';
1316 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1318 lex_state = LEX_INTERPCONCAT;
1322 if (bufptr != bufend)
1324 lex_state = LEX_INTERPCONCAT;
1329 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1330 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1331 if (strchr("LU", *s) &&
1332 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1334 lex_casestack[--lex_casemods] = '\0';
1337 if (lex_casemods > 10) {
1338 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1339 if (newlb != lex_casestack) {
1341 lex_casestack = newlb;
1344 lex_casestack[lex_casemods++] = *s;
1345 lex_casestack[lex_casemods] = '\0';
1346 lex_state = LEX_INTERPCONCAT;
1347 nextval[nexttoke].ival = 0;
1350 nextval[nexttoke].ival = OP_LCFIRST;
1352 nextval[nexttoke].ival = OP_UCFIRST;
1354 nextval[nexttoke].ival = OP_LC;
1356 nextval[nexttoke].ival = OP_UC;
1358 nextval[nexttoke].ival = OP_QUOTEMETA;
1360 croak("panic: yylex");
1372 case LEX_INTERPPUSH:
1373 return sublex_push();
1375 case LEX_INTERPSTART:
1376 if (bufptr == bufend)
1377 return sublex_done();
1379 lex_dojoin = (*bufptr == '@');
1380 lex_state = LEX_INTERPNORMAL;
1382 nextval[nexttoke].ival = 0;
1384 force_ident("\"", '$');
1385 nextval[nexttoke].ival = 0;
1387 nextval[nexttoke].ival = 0;
1389 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1398 case LEX_INTERPENDMAYBE:
1399 if (intuit_more(bufptr)) {
1400 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1408 lex_state = LEX_INTERPCONCAT;
1412 case LEX_INTERPCONCAT:
1415 croak("panic: INTERPCONCAT");
1417 if (bufptr == bufend)
1418 return sublex_done();
1420 if (SvIVX(linestr) == '\'') {
1421 SV *sv = newSVsv(linestr);
1424 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1428 s = scan_const(bufptr);
1430 lex_state = LEX_INTERPCASEMOD;
1432 lex_state = LEX_INTERPSTART;
1436 nextval[nexttoke] = yylval;
1449 lex_state = LEX_NORMAL;
1450 s = scan_formline(bufptr);
1457 oldoldbufptr = oldbufptr;
1460 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1466 croak("Unrecognized character \\%03o", *s & 255);
1469 goto fake_eof; /* emulate EOF on ^D or ^Z */
1475 yyerror("Missing right bracket");
1479 goto retry; /* ignore stray nulls */
1482 if (!in_eval && !preambled) {
1484 sv_setpv(linestr,incl_perldb());
1486 sv_catpv(linestr,";");
1488 while(AvFILL(preambleav) >= 0) {
1489 SV *tmpsv = av_shift(preambleav);
1490 sv_catsv(linestr, tmpsv);
1491 sv_catpv(linestr, ";");
1494 sv_free((SV*)preambleav);
1497 if (minus_n || minus_p) {
1498 sv_catpv(linestr, "LINE: while (<>) {");
1500 sv_catpv(linestr,"chomp;");
1502 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1504 GvIMPORTED_AV_on(gv);
1506 if (strchr("/'\"", *splitstr)
1507 && strchr(splitstr + 1, *splitstr))
1508 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1511 s = "'~#\200\1'"; /* surely one char is unused...*/
1512 while (s[1] && strchr(splitstr, *s)) s++;
1514 sv_catpvf(linestr, "@F=split(%s%c",
1515 "q" + (delim == '\''), delim);
1516 for (s = splitstr; *s; s++) {
1518 sv_catpvn(linestr, "\\", 1);
1519 sv_catpvn(linestr, s, 1);
1521 sv_catpvf(linestr, "%c);", delim);
1525 sv_catpv(linestr,"@F=split(' ');");
1528 sv_catpv(linestr, "\n");
1529 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1530 bufend = SvPVX(linestr) + SvCUR(linestr);
1531 if (perldb && curstash != debstash) {
1532 SV *sv = NEWSV(85,0);
1534 sv_upgrade(sv, SVt_PVMG);
1535 sv_setsv(sv,linestr);
1536 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1541 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1544 if (preprocess && !in_eval)
1545 (void)my_pclose(rsfp);
1546 else if ((PerlIO *)rsfp == PerlIO_stdin())
1547 PerlIO_clearerr(rsfp);
1549 (void)PerlIO_close(rsfp);
1552 if (!in_eval && (minus_n || minus_p)) {
1553 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1554 sv_catpv(linestr,";}");
1555 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1556 bufend = SvPVX(linestr) + SvCUR(linestr);
1557 minus_n = minus_p = 0;
1560 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1561 sv_setpv(linestr,"");
1562 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1565 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1568 /* Incest with pod. */
1569 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1570 sv_setpv(linestr, "");
1571 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1572 bufend = SvPVX(linestr) + SvCUR(linestr);
1577 } while (doextract);
1578 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1579 if (perldb && curstash != debstash) {
1580 SV *sv = NEWSV(85,0);
1582 sv_upgrade(sv, SVt_PVMG);
1583 sv_setsv(sv,linestr);
1584 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1586 bufend = SvPVX(linestr) + SvCUR(linestr);
1587 if (curcop->cop_line == 1) {
1588 while (s < bufend && isSPACE(*s))
1590 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1594 if (*s == '#' && *(s+1) == '!')
1596 #ifdef ALTERNATE_SHEBANG
1598 static char as[] = ALTERNATE_SHEBANG;
1599 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1600 d = s + (sizeof(as) - 1);
1602 #endif /* ALTERNATE_SHEBANG */
1611 while (*d && !isSPACE(*d))
1615 #ifdef ARG_ZERO_IS_SCRIPT
1616 if (ipathend > ipath) {
1618 * HP-UX (at least) sets argv[0] to the script name,
1619 * which makes $^X incorrect. And Digital UNIX and Linux,
1620 * at least, set argv[0] to the basename of the Perl
1621 * interpreter. So, having found "#!", we'll set it right.
1623 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1624 assert(SvPOK(x) || SvGMAGICAL(x));
1625 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1626 sv_setpvn(x, ipath, ipathend - ipath);
1629 TAINT_NOT; /* $^X is always tainted, but that's OK */
1631 #endif /* ARG_ZERO_IS_SCRIPT */
1636 d = instr(s,"perl -");
1638 d = instr(s,"perl");
1639 #ifdef ALTERNATE_SHEBANG
1641 * If the ALTERNATE_SHEBANG on this system starts with a
1642 * character that can be part of a Perl expression, then if
1643 * we see it but not "perl", we're probably looking at the
1644 * start of Perl code, not a request to hand off to some
1645 * other interpreter. Similarly, if "perl" is there, but
1646 * not in the first 'word' of the line, we assume the line
1647 * contains the start of the Perl program.
1649 if (d && *s != '#') {
1651 while (*c && !strchr("; \t\r\n\f\v#", *c))
1654 d = Nullch; /* "perl" not in first word; ignore */
1656 *s = '#'; /* Don't try to parse shebang line */
1658 #endif /* ALTERNATE_SHEBANG */
1663 !instr(s,"indir") &&
1664 instr(origargv[0],"perl"))
1670 while (s < bufend && isSPACE(*s))
1673 Newz(899,newargv,origargc+3,char*);
1675 while (s < bufend && !isSPACE(*s))
1678 Copy(origargv+1, newargv+2, origargc+1, char*);
1683 execv(ipath, newargv);
1684 croak("Can't exec %s", ipath);
1687 U32 oldpdb = perldb;
1688 bool oldn = minus_n;
1689 bool oldp = minus_p;
1691 while (*d && !isSPACE(*d)) d++;
1692 while (*d == ' ' || *d == '\t') d++;
1696 if (*d == 'M' || *d == 'm') {
1698 while (*d && !isSPACE(*d)) d++;
1699 croak("Too late for \"-%.*s\" option",
1702 d = moreswitches(d);
1704 if (perldb && !oldpdb ||
1705 ( minus_n || minus_p ) && !(oldn || oldp) )
1706 /* if we have already added "LINE: while (<>) {",
1707 we must not do it again */
1709 sv_setpv(linestr, "");
1710 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1711 bufend = SvPVX(linestr) + SvCUR(linestr);
1714 (void)gv_fetchfile(origfilename);
1721 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1723 lex_state = LEX_FORMLINE;
1728 warn("Illegal character \\%03o (carriage return)", '\r');
1730 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1731 case ' ': case '\t': case '\f': case 013:
1736 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1738 while (s < d && *s != '\n')
1743 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1745 lex_state = LEX_FORMLINE;
1755 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1760 while (s < bufend && (*s == ' ' || *s == '\t'))
1763 if (strnEQ(s,"=>",2)) {
1765 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1766 (int)tmp, (int)tmp);
1767 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1768 OPERATOR('-'); /* unary minus */
1770 last_uni = oldbufptr;
1771 last_lop_op = OP_FTEREAD; /* good enough */
1773 case 'r': FTST(OP_FTEREAD);
1774 case 'w': FTST(OP_FTEWRITE);
1775 case 'x': FTST(OP_FTEEXEC);
1776 case 'o': FTST(OP_FTEOWNED);
1777 case 'R': FTST(OP_FTRREAD);
1778 case 'W': FTST(OP_FTRWRITE);
1779 case 'X': FTST(OP_FTREXEC);
1780 case 'O': FTST(OP_FTROWNED);
1781 case 'e': FTST(OP_FTIS);
1782 case 'z': FTST(OP_FTZERO);
1783 case 's': FTST(OP_FTSIZE);
1784 case 'f': FTST(OP_FTFILE);
1785 case 'd': FTST(OP_FTDIR);
1786 case 'l': FTST(OP_FTLINK);
1787 case 'p': FTST(OP_FTPIPE);
1788 case 'S': FTST(OP_FTSOCK);
1789 case 'u': FTST(OP_FTSUID);
1790 case 'g': FTST(OP_FTSGID);
1791 case 'k': FTST(OP_FTSVTX);
1792 case 'b': FTST(OP_FTBLK);
1793 case 'c': FTST(OP_FTCHR);
1794 case 't': FTST(OP_FTTTY);
1795 case 'T': FTST(OP_FTTEXT);
1796 case 'B': FTST(OP_FTBINARY);
1797 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1798 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1799 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1801 croak("Unrecognized file test: -%c", (int)tmp);
1808 if (expect == XOPERATOR)
1813 else if (*s == '>') {
1816 if (isIDFIRST(*s)) {
1817 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1825 if (expect == XOPERATOR)
1828 if (isSPACE(*s) || !isSPACE(*bufptr))
1830 OPERATOR('-'); /* unary minus */
1837 if (expect == XOPERATOR)
1842 if (expect == XOPERATOR)
1845 if (isSPACE(*s) || !isSPACE(*bufptr))
1851 if (expect != XOPERATOR) {
1852 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1854 force_ident(tokenbuf, '*');
1867 if (expect == XOPERATOR) {
1872 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1875 yyerror("Final % should be \\% or %name");
1878 pending_ident = '%';
1900 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1901 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1906 if (curcop->cop_line < copline)
1907 copline = curcop->cop_line;
1918 if (lex_brackets <= 0)
1919 yyerror("Unmatched right bracket");
1922 if (lex_state == LEX_INTERPNORMAL) {
1923 if (lex_brackets == 0) {
1924 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1925 lex_state = LEX_INTERPEND;
1932 if (lex_brackets > 100) {
1933 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1934 if (newlb != lex_brackstack) {
1936 lex_brackstack = newlb;
1941 if (lex_formbrack) {
1945 if (oldoldbufptr == last_lop)
1946 lex_brackstack[lex_brackets++] = XTERM;
1948 lex_brackstack[lex_brackets++] = XOPERATOR;
1949 OPERATOR(HASHBRACK);
1951 while (s < bufend && (*s == ' ' || *s == '\t'))
1955 if (d < bufend && *d == '-') {
1958 while (d < bufend && (*d == ' ' || *d == '\t'))
1961 if (d < bufend && isIDFIRST(*d)) {
1962 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1964 while (d < bufend && (*d == ' ' || *d == '\t'))
1967 char minus = (tokenbuf[0] == '-');
1969 (keyword(tokenbuf + 1, len) ||
1970 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1971 perl_get_cv(tokenbuf + 1, FALSE) ))
1972 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1973 tokenbuf + !minus, tokenbuf + !minus);
1974 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1981 lex_brackstack[lex_brackets++] = XSTATE;
1985 lex_brackstack[lex_brackets++] = XOPERATOR;
1990 if (oldoldbufptr == last_lop)
1991 lex_brackstack[lex_brackets++] = XTERM;
1993 lex_brackstack[lex_brackets++] = XOPERATOR;
1996 OPERATOR(HASHBRACK);
1998 for (t = s; t < bufend && isALNUM(*t); t++) ;
2000 else if (*s == '\'' || *s == '"') {
2007 while (t < bufend && isSPACE(*t))
2009 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2010 OPERATOR(HASHBRACK);
2014 lex_brackstack[lex_brackets-1] = XSTATE;
2020 yylval.ival = curcop->cop_line;
2021 if (isSPACE(*s) || *s == '#')
2022 copline = NOLINE; /* invalidate current command line number */
2027 if (lex_brackets <= 0)
2028 yyerror("Unmatched right bracket");
2030 expect = (expectation)lex_brackstack[--lex_brackets];
2031 if (lex_brackets < lex_formbrack)
2033 if (lex_state == LEX_INTERPNORMAL) {
2034 if (lex_brackets == 0) {
2035 if (lex_fakebrack) {
2036 lex_state = LEX_INTERPEND;
2038 return yylex(); /* ignore fake brackets */
2040 if (*s == '-' && s[1] == '>')
2041 lex_state = LEX_INTERPENDMAYBE;
2042 else if (*s != '[' && *s != '{')
2043 lex_state = LEX_INTERPEND;
2046 if (lex_brackets < lex_fakebrack) {
2049 return yylex(); /* ignore fake brackets */
2059 if (expect == XOPERATOR) {
2060 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2068 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2071 force_ident(tokenbuf, '&');
2075 yylval.ival = (OPpENTERSUB_AMPER<<8);
2094 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2095 warn("Reversed %c= operator",(int)tmp);
2097 if (expect == XSTATE && isALPHA(tmp) &&
2098 (s == linestart+1 || s[-2] == '\n') )
2100 if (in_eval && !rsfp) {
2105 if (strnEQ(s,"=cut",4)) {
2122 if (lex_brackets < lex_formbrack) {
2124 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2125 if (*t == '\n' || *t == '#') {
2143 if (expect != XOPERATOR) {
2144 if (s[1] != '<' && !strchr(s,'>'))
2147 s = scan_heredoc(s);
2149 s = scan_inputsymbol(s);
2150 TERM(sublex_start());
2155 SHop(OP_LEFT_SHIFT);
2169 SHop(OP_RIGHT_SHIFT);
2178 if (expect == XOPERATOR) {
2179 if (lex_formbrack && lex_brackets == lex_formbrack) {
2182 return ','; /* grandfather non-comma-format format */
2186 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2187 if (expect == XOPERATOR)
2188 no_op("Array length", bufptr);
2190 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2195 pending_ident = '#';
2199 if (expect == XOPERATOR)
2200 no_op("Scalar", bufptr);
2202 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2205 yyerror("Final $ should be \\$ or $name");
2209 /* This kludge not intended to be bulletproof. */
2210 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2211 yylval.opval = newSVOP(OP_CONST, 0,
2212 newSViv((IV)compiling.cop_arybase));
2213 yylval.opval->op_private = OPpCONST_ARYBASE;
2218 if (lex_state == LEX_NORMAL)
2221 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2227 isSPACE(*t) || isALNUM(*t) || *t == '$';
2230 bufptr = skipspace(bufptr);
2231 while (t < bufend && *t != ']')
2233 warn("Multidimensional syntax %.*s not supported",
2234 (t - bufptr) + 1, bufptr);
2238 else if (*s == '{') {
2240 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2241 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2243 char tmpbuf[sizeof tokenbuf];
2245 for (t++; isSPACE(*t); t++) ;
2246 if (isIDFIRST(*t)) {
2247 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2248 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2249 warn("You need to quote \"%s\"", tmpbuf);
2256 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2257 bool islop = (last_lop == oldoldbufptr);
2258 if (!islop || last_lop_op == OP_GREPSTART)
2260 else if (strchr("$@\"'`q", *s))
2261 expect = XTERM; /* e.g. print $fh "foo" */
2262 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2263 expect = XTERM; /* e.g. print $fh &sub */
2264 else if (isIDFIRST(*s)) {
2265 char tmpbuf[sizeof tokenbuf];
2266 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2267 if (keyword(tmpbuf, len))
2268 expect = XTERM; /* e.g. print $fh length() */
2270 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2271 if (gv && GvCVu(gv))
2272 expect = XTERM; /* e.g. print $fh subr() */
2275 else if (isDIGIT(*s))
2276 expect = XTERM; /* e.g. print $fh 3 */
2277 else if (*s == '.' && isDIGIT(s[1]))
2278 expect = XTERM; /* e.g. print $fh .3 */
2279 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2280 expect = XTERM; /* e.g. print $fh -1 */
2281 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2282 expect = XTERM; /* print $fh <<"EOF" */
2284 pending_ident = '$';
2288 if (expect == XOPERATOR)
2291 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2294 yyerror("Final @ should be \\@ or @name");
2297 if (lex_state == LEX_NORMAL)
2299 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2303 /* Warn about @ where they meant $. */
2305 if (*s == '[' || *s == '{') {
2307 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2309 if (*t == '}' || *t == ']') {
2311 bufptr = skipspace(bufptr);
2312 warn("Scalar value %.*s better written as $%.*s",
2313 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2318 pending_ident = '@';
2321 case '/': /* may either be division or pattern */
2322 case '?': /* may either be conditional or pattern */
2323 if (expect != XOPERATOR) {
2326 TERM(sublex_start());
2334 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2335 (s == linestart || s[-1] == '\n') ) {
2340 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2346 yylval.ival = OPf_SPECIAL;
2352 if (expect != XOPERATOR)
2357 case '0': case '1': case '2': case '3': case '4':
2358 case '5': case '6': case '7': case '8': case '9':
2360 if (expect == XOPERATOR)
2366 if (expect == XOPERATOR) {
2367 if (lex_formbrack && lex_brackets == lex_formbrack) {
2370 return ','; /* grandfather non-comma-format format */
2376 missingterm((char*)0);
2377 yylval.ival = OP_CONST;
2378 TERM(sublex_start());
2382 if (expect == XOPERATOR) {
2383 if (lex_formbrack && lex_brackets == lex_formbrack) {
2386 return ','; /* grandfather non-comma-format format */
2392 missingterm((char*)0);
2393 yylval.ival = OP_CONST;
2394 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2395 if (*d == '$' || *d == '@' || *d == '\\') {
2396 yylval.ival = OP_STRINGIFY;
2400 TERM(sublex_start());
2404 if (expect == XOPERATOR)
2405 no_op("Backticks",s);
2407 missingterm((char*)0);
2408 yylval.ival = OP_BACKTICK;
2410 TERM(sublex_start());
2414 if (dowarn && lex_inwhat && isDIGIT(*s))
2415 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2416 if (expect == XOPERATOR)
2417 no_op("Backslash",s);
2421 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2457 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2459 /* Some keywords can be followed by any delimiter, including ':' */
2460 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2461 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2462 (tokenbuf[0] == 'q' &&
2463 strchr("qwx", tokenbuf[1]))));
2465 /* x::* is just a word, unless x is "CORE" */
2466 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2470 while (d < bufend && isSPACE(*d))
2471 d++; /* no comments skipped here, or s### is misparsed */
2473 /* Is this a label? */
2474 if (!tmp && expect == XSTATE
2475 && d < bufend && *d == ':' && *(d + 1) != ':') {
2477 yylval.pval = savepv(tokenbuf);
2482 /* Check for keywords */
2483 tmp = keyword(tokenbuf, len);
2485 /* Is this a word before a => operator? */
2486 if (strnEQ(d,"=>",2)) {
2488 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2489 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2490 tokenbuf, tokenbuf);
2491 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2492 yylval.opval->op_private = OPpCONST_BARE;
2496 if (tmp < 0) { /* second-class keyword? */
2498 if (expect != XOPERATOR &&
2499 (*s != ':' || s[1] != ':') &&
2500 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2512 default: /* not a keyword */
2516 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2518 /* Get the rest if it looks like a package qualifier */
2520 if (*s == '\'' || *s == ':' && s[1] == ':') {
2521 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2524 croak("Bad name after %s::", tokenbuf);
2527 if (expect == XOPERATOR) {
2528 if (bufptr == linestart) {
2534 no_op("Bareword",s);
2537 /* Look for a subroutine with this name in current package. */
2539 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2541 /* Presume this is going to be a bareword of some sort. */
2544 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2545 yylval.opval->op_private = OPpCONST_BARE;
2547 /* See if it's the indirect object for a list operator. */
2550 oldoldbufptr < bufptr &&
2551 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2552 /* NO SKIPSPACE BEFORE HERE! */
2554 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2556 bool immediate_paren = *s == '(';
2558 /* (Now we can afford to cross potential line boundary.) */
2561 /* Two barewords in a row may indicate method call. */
2563 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2566 /* If not a declared subroutine, it's an indirect object. */
2567 /* (But it's an indir obj regardless for sort.) */
2569 if ((last_lop_op == OP_SORT ||
2570 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2571 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2572 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2577 /* If followed by a paren, it's certainly a subroutine. */
2583 if (gv && GvCVu(gv)) {
2584 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2585 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2590 nextval[nexttoke].opval = yylval.opval;
2597 /* If followed by var or block, call it a method (unless sub) */
2599 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2600 last_lop = oldbufptr;
2601 last_lop_op = OP_METHOD;
2605 /* If followed by a bareword, see if it looks like indir obj. */
2607 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2610 /* Not a method, so call it a subroutine (if defined) */
2612 if (gv && GvCVu(gv)) {
2614 if (lastchar == '-')
2615 warn("Ambiguous use of -%s resolved as -&%s()",
2616 tokenbuf, tokenbuf);
2617 last_lop = oldbufptr;
2618 last_lop_op = OP_ENTERSUB;
2619 /* Check for a constant sub */
2621 if ((sv = cv_const_sv(cv))) {
2623 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2624 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2625 yylval.opval->op_private = 0;
2629 /* Resolve to GV now. */
2630 op_free(yylval.opval);
2631 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2632 /* Is there a prototype? */
2635 char *proto = SvPV((SV*)cv, len);
2638 if (strEQ(proto, "$"))
2640 if (*proto == '&' && *s == '{') {
2641 sv_setpv(subname,"__ANON__");
2645 nextval[nexttoke].opval = yylval.opval;
2651 if (hints & HINT_STRICT_SUBS &&
2654 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2655 last_lop_op != OP_ACCEPT &&
2656 last_lop_op != OP_PIPE_OP &&
2657 last_lop_op != OP_SOCKPAIR)
2660 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2665 /* Call it a bare word */
2669 if (lastchar != '-') {
2670 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2672 warn(warn_reserved, tokenbuf);
2675 if (lastchar && strchr("*%&", lastchar)) {
2676 warn("Operator or semicolon missing before %c%s",
2677 lastchar, tokenbuf);
2678 warn("Ambiguous use of %c resolved as operator %c",
2679 lastchar, lastchar);
2685 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2686 newSVsv(GvSV(curcop->cop_filegv)));
2690 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2691 newSVpvf("%ld", (long)curcop->cop_line));
2694 case KEY___PACKAGE__:
2695 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2697 ? newSVsv(curstname)
2706 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2707 char *pname = "main";
2708 if (tokenbuf[2] == 'D')
2709 pname = HvNAME(curstash ? curstash : defstash);
2710 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2713 GvIOp(gv) = newIO();
2714 IoIFP(GvIOp(gv)) = rsfp;
2715 #if defined(HAS_FCNTL) && defined(F_SETFD)
2717 int fd = PerlIO_fileno(rsfp);
2718 fcntl(fd,F_SETFD,fd >= 3);
2721 /* Mark this internal pseudo-handle as clean */
2722 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2724 IoTYPE(GvIOp(gv)) = '|';
2725 else if ((PerlIO*)rsfp == PerlIO_stdin())
2726 IoTYPE(GvIOp(gv)) = '-';
2728 IoTYPE(GvIOp(gv)) = '<';
2739 if (expect == XSTATE) {
2746 if (*s == ':' && s[1] == ':') {
2749 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2750 tmp = keyword(tokenbuf, len);
2764 LOP(OP_ACCEPT,XTERM);
2770 LOP(OP_ATAN2,XTERM);
2779 LOP(OP_BLESS,XTERM);
2788 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2808 LOP(OP_CRYPT,XTERM);
2812 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2813 if (*d != '0' && isDIGIT(*d))
2814 yywarn("chmod: mode argument is missing initial 0");
2816 LOP(OP_CHMOD,XTERM);
2819 LOP(OP_CHOWN,XTERM);
2822 LOP(OP_CONNECT,XTERM);
2838 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2842 hints |= HINT_BLOCK_SCOPE;
2852 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2853 LOP(OP_DBMOPEN,XTERM);
2859 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2866 yylval.ival = curcop->cop_line;
2880 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2881 UNIBRACK(OP_ENTEREVAL);
2896 case KEY_endhostent:
2902 case KEY_endservent:
2905 case KEY_endprotoent:
2916 yylval.ival = curcop->cop_line;
2918 if (isIDFIRST(*s)) {
2920 if ((bufend - p) >= 3 &&
2921 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2925 croak("Missing $ on loop variable");
2930 LOP(OP_FORMLINE,XTERM);
2936 LOP(OP_FCNTL,XTERM);
2942 LOP(OP_FLOCK,XTERM);
2951 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2954 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2969 case KEY_getpriority:
2970 LOP(OP_GETPRIORITY,XTERM);
2972 case KEY_getprotobyname:
2975 case KEY_getprotobynumber:
2976 LOP(OP_GPBYNUMBER,XTERM);
2978 case KEY_getprotoent:
2990 case KEY_getpeername:
2991 UNI(OP_GETPEERNAME);
2993 case KEY_gethostbyname:
2996 case KEY_gethostbyaddr:
2997 LOP(OP_GHBYADDR,XTERM);
2999 case KEY_gethostent:
3002 case KEY_getnetbyname:
3005 case KEY_getnetbyaddr:
3006 LOP(OP_GNBYADDR,XTERM);
3011 case KEY_getservbyname:
3012 LOP(OP_GSBYNAME,XTERM);
3014 case KEY_getservbyport:
3015 LOP(OP_GSBYPORT,XTERM);
3017 case KEY_getservent:
3020 case KEY_getsockname:
3021 UNI(OP_GETSOCKNAME);
3023 case KEY_getsockopt:
3024 LOP(OP_GSOCKOPT,XTERM);
3046 yylval.ival = curcop->cop_line;
3050 LOP(OP_INDEX,XTERM);
3056 LOP(OP_IOCTL,XTERM);
3068 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3099 LOP(OP_LISTEN,XTERM);
3109 TERM(sublex_start());
3112 LOP(OP_MAPSTART,XREF);
3115 LOP(OP_MKDIR,XTERM);
3118 LOP(OP_MSGCTL,XTERM);
3121 LOP(OP_MSGGET,XTERM);
3124 LOP(OP_MSGRCV,XTERM);
3127 LOP(OP_MSGSND,XTERM);
3132 if (isIDFIRST(*s)) {
3133 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
3134 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3138 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3145 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3152 if (expect != XSTATE)
3153 yyerror("\"no\" not allowed in expression");
3154 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3155 s = force_version(s);
3164 if (isIDFIRST(*s)) {
3166 for (d = s; isALNUM(*d); d++) ;
3168 if (strchr("|&*+-=!?:.", *t))
3169 warn("Precedence problem: open %.*s should be open(%.*s)",
3175 yylval.ival = OP_OR;
3185 LOP(OP_OPEN_DIR,XTERM);
3188 checkcomma(s,tokenbuf,"filehandle");
3192 checkcomma(s,tokenbuf,"filehandle");
3211 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3215 LOP(OP_PIPE_OP,XTERM);
3220 missingterm((char*)0);
3221 yylval.ival = OP_CONST;
3222 TERM(sublex_start());
3230 missingterm((char*)0);
3231 if (dowarn && SvLEN(lex_stuff)) {
3232 d = SvPV_force(lex_stuff, len);
3233 for (; len; --len, ++d) {
3235 warn("Possible attempt to separate words with commas");
3239 warn("Possible attempt to put comments in qw() list");
3245 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3249 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3252 yylval.ival = OP_SPLIT;
3256 last_lop = oldbufptr;
3257 last_lop_op = OP_SPLIT;
3263 missingterm((char*)0);
3264 yylval.ival = OP_STRINGIFY;
3265 if (SvIVX(lex_stuff) == '\'')
3266 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3267 TERM(sublex_start());
3272 missingterm((char*)0);
3273 yylval.ival = OP_BACKTICK;
3275 TERM(sublex_start());
3282 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3283 if (isIDFIRST(*tokenbuf))
3284 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3286 yyerror("<> should be quotes");
3293 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3297 LOP(OP_RENAME,XTERM);
3306 LOP(OP_RINDEX,XTERM);
3329 LOP(OP_REVERSE,XTERM);
3340 TERM(sublex_start());
3342 TOKEN(1); /* force error */
3351 LOP(OP_SELECT,XTERM);
3357 LOP(OP_SEMCTL,XTERM);
3360 LOP(OP_SEMGET,XTERM);
3363 LOP(OP_SEMOP,XTERM);
3369 LOP(OP_SETPGRP,XTERM);
3371 case KEY_setpriority:
3372 LOP(OP_SETPRIORITY,XTERM);
3374 case KEY_sethostent:
3380 case KEY_setservent:
3383 case KEY_setprotoent:
3393 LOP(OP_SEEKDIR,XTERM);
3395 case KEY_setsockopt:
3396 LOP(OP_SSOCKOPT,XTERM);
3402 LOP(OP_SHMCTL,XTERM);
3405 LOP(OP_SHMGET,XTERM);
3408 LOP(OP_SHMREAD,XTERM);
3411 LOP(OP_SHMWRITE,XTERM);
3414 LOP(OP_SHUTDOWN,XTERM);
3423 LOP(OP_SOCKET,XTERM);
3425 case KEY_socketpair:
3426 LOP(OP_SOCKPAIR,XTERM);
3429 checkcomma(s,tokenbuf,"subroutine name");
3431 if (*s == ';' || *s == ')') /* probably a close */
3432 croak("sort is now a reserved word");
3434 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3438 LOP(OP_SPLIT,XTERM);
3441 LOP(OP_SPRINTF,XTERM);
3444 LOP(OP_SPLICE,XTERM);
3460 LOP(OP_SUBSTR,XTERM);
3467 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3468 char tmpbuf[sizeof tokenbuf];
3470 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3471 if (strchr(tmpbuf, ':'))
3472 sv_setpv(subname, tmpbuf);
3474 sv_setsv(subname,curstname);
3475 sv_catpvn(subname,"::",2);
3476 sv_catpvn(subname,tmpbuf,len);
3478 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3482 expect = XTERMBLOCK;
3483 sv_setpv(subname,"?");
3486 if (tmp == KEY_format) {
3489 lex_formbrack = lex_brackets + 1;
3493 /* Look for a prototype */
3500 SvREFCNT_dec(lex_stuff);
3502 croak("Prototype not terminated");
3505 d = SvPVX(lex_stuff);
3507 for (p = d; *p; ++p) {
3512 SvCUR(lex_stuff) = tmp;
3515 nextval[1] = nextval[0];
3516 nexttype[1] = nexttype[0];
3517 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3518 nexttype[0] = THING;
3519 if (nexttoke == 1) {
3520 lex_defer = lex_state;
3521 lex_expect = expect;
3522 lex_state = LEX_KNOWNEXT;
3527 if (*SvPV(subname,na) == '?') {
3528 sv_setpv(subname,"__ANON__");
3535 LOP(OP_SYSTEM,XREF);
3538 LOP(OP_SYMLINK,XTERM);
3541 LOP(OP_SYSCALL,XTERM);
3544 LOP(OP_SYSOPEN,XTERM);
3547 LOP(OP_SYSSEEK,XTERM);
3550 LOP(OP_SYSREAD,XTERM);
3553 LOP(OP_SYSWRITE,XTERM);
3557 TERM(sublex_start());
3578 LOP(OP_TRUNCATE,XTERM);
3590 yylval.ival = curcop->cop_line;
3594 yylval.ival = curcop->cop_line;
3598 LOP(OP_UNLINK,XTERM);
3604 LOP(OP_UNPACK,XTERM);
3607 LOP(OP_UTIME,XTERM);
3611 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3612 if (*d != '0' && isDIGIT(*d))
3613 yywarn("umask: argument is missing initial 0");
3618 LOP(OP_UNSHIFT,XTERM);
3621 if (expect != XSTATE)
3622 yyerror("\"use\" not allowed in expression");
3625 s = force_version(s);
3626 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3627 nextval[nexttoke].opval = Nullop;
3632 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3633 s = force_version(s);
3646 yylval.ival = curcop->cop_line;
3650 hints |= HINT_BLOCK_SCOPE;
3657 LOP(OP_WAITPID,XTERM);
3663 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3667 if (expect == XOPERATOR)
3673 yylval.ival = OP_XOR;
3678 TERM(sublex_start());
3691 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3692 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3693 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3694 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3695 if (strEQ(d,"__END__")) return KEY___END__;
3699 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3704 if (strEQ(d,"and")) return -KEY_and;
3705 if (strEQ(d,"abs")) return -KEY_abs;
3708 if (strEQ(d,"alarm")) return -KEY_alarm;
3709 if (strEQ(d,"atan2")) return -KEY_atan2;
3712 if (strEQ(d,"accept")) return -KEY_accept;
3717 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3720 if (strEQ(d,"bless")) return -KEY_bless;
3721 if (strEQ(d,"bind")) return -KEY_bind;
3722 if (strEQ(d,"binmode")) return -KEY_binmode;
3725 if (strEQ(d,"CORE")) return -KEY_CORE;
3730 if (strEQ(d,"cmp")) return -KEY_cmp;
3731 if (strEQ(d,"chr")) return -KEY_chr;
3732 if (strEQ(d,"cos")) return -KEY_cos;
3735 if (strEQ(d,"chop")) return KEY_chop;
3738 if (strEQ(d,"close")) return -KEY_close;
3739 if (strEQ(d,"chdir")) return -KEY_chdir;
3740 if (strEQ(d,"chomp")) return KEY_chomp;
3741 if (strEQ(d,"chmod")) return -KEY_chmod;
3742 if (strEQ(d,"chown")) return -KEY_chown;
3743 if (strEQ(d,"crypt")) return -KEY_crypt;
3746 if (strEQ(d,"chroot")) return -KEY_chroot;
3747 if (strEQ(d,"caller")) return -KEY_caller;
3750 if (strEQ(d,"connect")) return -KEY_connect;
3753 if (strEQ(d,"closedir")) return -KEY_closedir;
3754 if (strEQ(d,"continue")) return -KEY_continue;
3759 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3764 if (strEQ(d,"do")) return KEY_do;
3767 if (strEQ(d,"die")) return -KEY_die;
3770 if (strEQ(d,"dump")) return -KEY_dump;
3773 if (strEQ(d,"delete")) return KEY_delete;
3776 if (strEQ(d,"defined")) return KEY_defined;
3777 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3780 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3785 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3786 if (strEQ(d,"END")) return KEY_END;
3791 if (strEQ(d,"eq")) return -KEY_eq;
3794 if (strEQ(d,"eof")) return -KEY_eof;
3795 if (strEQ(d,"exp")) return -KEY_exp;
3798 if (strEQ(d,"else")) return KEY_else;
3799 if (strEQ(d,"exit")) return -KEY_exit;
3800 if (strEQ(d,"eval")) return KEY_eval;
3801 if (strEQ(d,"exec")) return -KEY_exec;
3802 if (strEQ(d,"each")) return KEY_each;
3805 if (strEQ(d,"elsif")) return KEY_elsif;
3808 if (strEQ(d,"exists")) return KEY_exists;
3809 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3812 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3813 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3816 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3819 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3820 if (strEQ(d,"endservent")) return -KEY_endservent;
3823 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3830 if (strEQ(d,"for")) return KEY_for;
3833 if (strEQ(d,"fork")) return -KEY_fork;
3836 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3837 if (strEQ(d,"flock")) return -KEY_flock;
3840 if (strEQ(d,"format")) return KEY_format;
3841 if (strEQ(d,"fileno")) return -KEY_fileno;
3844 if (strEQ(d,"foreach")) return KEY_foreach;
3847 if (strEQ(d,"formline")) return -KEY_formline;
3853 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3854 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3858 if (strnEQ(d,"get",3)) {
3863 if (strEQ(d,"ppid")) return -KEY_getppid;
3864 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3867 if (strEQ(d,"pwent")) return -KEY_getpwent;
3868 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3869 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3872 if (strEQ(d,"peername")) return -KEY_getpeername;
3873 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3874 if (strEQ(d,"priority")) return -KEY_getpriority;
3877 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3880 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3884 else if (*d == 'h') {
3885 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3886 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3887 if (strEQ(d,"hostent")) return -KEY_gethostent;
3889 else if (*d == 'n') {
3890 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3891 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3892 if (strEQ(d,"netent")) return -KEY_getnetent;
3894 else if (*d == 's') {
3895 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3896 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3897 if (strEQ(d,"servent")) return -KEY_getservent;
3898 if (strEQ(d,"sockname")) return -KEY_getsockname;
3899 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3901 else if (*d == 'g') {
3902 if (strEQ(d,"grent")) return -KEY_getgrent;
3903 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3904 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3906 else if (*d == 'l') {
3907 if (strEQ(d,"login")) return -KEY_getlogin;
3909 else if (strEQ(d,"c")) return -KEY_getc;
3914 if (strEQ(d,"gt")) return -KEY_gt;
3915 if (strEQ(d,"ge")) return -KEY_ge;
3918 if (strEQ(d,"grep")) return KEY_grep;
3919 if (strEQ(d,"goto")) return KEY_goto;
3920 if (strEQ(d,"glob")) return -KEY_glob;
3923 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3928 if (strEQ(d,"hex")) return -KEY_hex;
3933 if (strEQ(d,"if")) return KEY_if;
3936 if (strEQ(d,"int")) return -KEY_int;
3939 if (strEQ(d,"index")) return -KEY_index;
3940 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3945 if (strEQ(d,"join")) return -KEY_join;
3949 if (strEQ(d,"keys")) return KEY_keys;
3950 if (strEQ(d,"kill")) return -KEY_kill;
3955 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3956 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3962 if (strEQ(d,"lt")) return -KEY_lt;
3963 if (strEQ(d,"le")) return -KEY_le;
3964 if (strEQ(d,"lc")) return -KEY_lc;
3967 if (strEQ(d,"log")) return -KEY_log;
3970 if (strEQ(d,"last")) return KEY_last;
3971 if (strEQ(d,"link")) return -KEY_link;
3972 if (strEQ(d,"lock")) return -KEY_lock;
3975 if (strEQ(d,"local")) return KEY_local;
3976 if (strEQ(d,"lstat")) return -KEY_lstat;
3979 if (strEQ(d,"length")) return -KEY_length;
3980 if (strEQ(d,"listen")) return -KEY_listen;
3983 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3986 if (strEQ(d,"localtime")) return -KEY_localtime;
3992 case 1: return KEY_m;
3994 if (strEQ(d,"my")) return KEY_my;
3997 if (strEQ(d,"map")) return KEY_map;
4000 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4003 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4004 if (strEQ(d,"msgget")) return -KEY_msgget;
4005 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4006 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4011 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4014 if (strEQ(d,"next")) return KEY_next;
4015 if (strEQ(d,"ne")) return -KEY_ne;
4016 if (strEQ(d,"not")) return -KEY_not;
4017 if (strEQ(d,"no")) return KEY_no;
4022 if (strEQ(d,"or")) return -KEY_or;
4025 if (strEQ(d,"ord")) return -KEY_ord;
4026 if (strEQ(d,"oct")) return -KEY_oct;
4029 if (strEQ(d,"open")) return -KEY_open;
4032 if (strEQ(d,"opendir")) return -KEY_opendir;
4039 if (strEQ(d,"pop")) return KEY_pop;
4040 if (strEQ(d,"pos")) return KEY_pos;
4043 if (strEQ(d,"push")) return KEY_push;
4044 if (strEQ(d,"pack")) return -KEY_pack;
4045 if (strEQ(d,"pipe")) return -KEY_pipe;
4048 if (strEQ(d,"print")) return KEY_print;
4051 if (strEQ(d,"printf")) return KEY_printf;
4054 if (strEQ(d,"package")) return KEY_package;
4057 if (strEQ(d,"prototype")) return KEY_prototype;
4062 if (strEQ(d,"q")) return KEY_q;
4063 if (strEQ(d,"qq")) return KEY_qq;
4064 if (strEQ(d,"qw")) return KEY_qw;
4065 if (strEQ(d,"qx")) return KEY_qx;
4067 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4070 if (strEQ(d,"RESTART")) return KEY_RESTART;
4075 if (strEQ(d,"ref")) return -KEY_ref;
4078 if (strEQ(d,"read")) return -KEY_read;
4079 if (strEQ(d,"rand")) return -KEY_rand;
4080 if (strEQ(d,"recv")) return -KEY_recv;
4081 if (strEQ(d,"redo")) return KEY_redo;
4084 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4085 if (strEQ(d,"reset")) return -KEY_reset;
4088 if (strEQ(d,"return")) return KEY_return;
4089 if (strEQ(d,"rename")) return -KEY_rename;
4090 if (strEQ(d,"rindex")) return -KEY_rindex;
4093 if (strEQ(d,"require")) return -KEY_require;
4094 if (strEQ(d,"reverse")) return -KEY_reverse;
4095 if (strEQ(d,"readdir")) return -KEY_readdir;
4098 if (strEQ(d,"readlink")) return -KEY_readlink;
4099 if (strEQ(d,"readline")) return -KEY_readline;
4100 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4103 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4109 case 0: return KEY_s;
4111 if (strEQ(d,"scalar")) return KEY_scalar;
4116 if (strEQ(d,"seek")) return -KEY_seek;
4117 if (strEQ(d,"send")) return -KEY_send;
4120 if (strEQ(d,"semop")) return -KEY_semop;
4123 if (strEQ(d,"select")) return -KEY_select;
4124 if (strEQ(d,"semctl")) return -KEY_semctl;
4125 if (strEQ(d,"semget")) return -KEY_semget;
4128 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4129 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4132 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4133 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4136 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4139 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4140 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4141 if (strEQ(d,"setservent")) return -KEY_setservent;
4144 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4145 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4152 if (strEQ(d,"shift")) return KEY_shift;
4155 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4156 if (strEQ(d,"shmget")) return -KEY_shmget;
4159 if (strEQ(d,"shmread")) return -KEY_shmread;
4162 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4163 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4168 if (strEQ(d,"sin")) return -KEY_sin;
4171 if (strEQ(d,"sleep")) return -KEY_sleep;
4174 if (strEQ(d,"sort")) return KEY_sort;
4175 if (strEQ(d,"socket")) return -KEY_socket;
4176 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4179 if (strEQ(d,"split")) return KEY_split;
4180 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4181 if (strEQ(d,"splice")) return KEY_splice;
4184 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4187 if (strEQ(d,"srand")) return -KEY_srand;
4190 if (strEQ(d,"stat")) return -KEY_stat;
4191 if (strEQ(d,"study")) return KEY_study;
4194 if (strEQ(d,"substr")) return -KEY_substr;
4195 if (strEQ(d,"sub")) return KEY_sub;
4200 if (strEQ(d,"system")) return -KEY_system;
4203 if (strEQ(d,"symlink")) return -KEY_symlink;
4204 if (strEQ(d,"syscall")) return -KEY_syscall;
4205 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4206 if (strEQ(d,"sysread")) return -KEY_sysread;
4207 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4210 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4219 if (strEQ(d,"tr")) return KEY_tr;
4222 if (strEQ(d,"tie")) return KEY_tie;
4225 if (strEQ(d,"tell")) return -KEY_tell;
4226 if (strEQ(d,"tied")) return KEY_tied;
4227 if (strEQ(d,"time")) return -KEY_time;
4230 if (strEQ(d,"times")) return -KEY_times;
4233 if (strEQ(d,"telldir")) return -KEY_telldir;
4236 if (strEQ(d,"truncate")) return -KEY_truncate;
4243 if (strEQ(d,"uc")) return -KEY_uc;
4246 if (strEQ(d,"use")) return KEY_use;
4249 if (strEQ(d,"undef")) return KEY_undef;
4250 if (strEQ(d,"until")) return KEY_until;
4251 if (strEQ(d,"untie")) return KEY_untie;
4252 if (strEQ(d,"utime")) return -KEY_utime;
4253 if (strEQ(d,"umask")) return -KEY_umask;
4256 if (strEQ(d,"unless")) return KEY_unless;
4257 if (strEQ(d,"unpack")) return -KEY_unpack;
4258 if (strEQ(d,"unlink")) return -KEY_unlink;
4261 if (strEQ(d,"unshift")) return KEY_unshift;
4262 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4267 if (strEQ(d,"values")) return -KEY_values;
4268 if (strEQ(d,"vec")) return -KEY_vec;
4273 if (strEQ(d,"warn")) return -KEY_warn;
4274 if (strEQ(d,"wait")) return -KEY_wait;
4277 if (strEQ(d,"while")) return KEY_while;
4278 if (strEQ(d,"write")) return -KEY_write;
4281 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4284 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4289 if (len == 1) return -KEY_x;
4290 if (strEQ(d,"xor")) return -KEY_xor;
4293 if (len == 1) return KEY_y;
4302 checkcomma(s,name,what)
4309 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4311 for (w = s+2; *w && level; w++) {
4318 for (; *w && isSPACE(*w); w++) ;
4319 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4320 warn("%s (...) interpreted as function",name);
4322 while (s < bufend && isSPACE(*s))
4326 while (s < bufend && isSPACE(*s))
4328 if (isIDFIRST(*s)) {
4332 while (s < bufend && isSPACE(*s))
4337 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4341 croak("No comma allowed after %s", what);
4347 scan_word(s, dest, destlen, allow_package, slp)
4354 register char *d = dest;
4355 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4358 croak(ident_too_long);
4361 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4366 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4379 scan_ident(s, send, dest, destlen, ck_uni)
4381 register char *send;
4391 if (lex_brackets == 0)
4396 e = d + destlen - 3; /* two-character token, ending NUL */
4398 while (isDIGIT(*s)) {
4400 croak(ident_too_long);
4407 croak(ident_too_long);
4410 else if (*s == '\'' && isIDFIRST(s[1])) {
4415 else if (*s == ':' && s[1] == ':') {
4426 if (lex_state != LEX_NORMAL)
4427 lex_state = LEX_INTERPENDMAYBE;
4430 if (*s == '$' && s[1] &&
4431 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4433 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4434 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4447 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4452 if (isSPACE(s[-1])) {
4455 if (ch != ' ' && ch != '\t') {
4461 if (isIDFIRST(*d)) {
4463 while (isALNUM(*s) || *s == ':')
4466 while (s < send && (*s == ' ' || *s == '\t')) s++;
4467 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4468 if (dowarn && keyword(dest, d - dest)) {
4469 char *brack = *s == '[' ? "[...]" : "{...}";
4470 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4471 funny, dest, brack, funny, dest, brack);
4473 lex_fakebrack = lex_brackets+1;
4475 lex_brackstack[lex_brackets++] = XOPERATOR;
4481 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4482 lex_state = LEX_INTERPEND;
4486 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4487 warn("Ambiguous use of %c{%s} resolved to %c%s",
4488 funny, dest, funny, dest);
4491 s = bracket; /* let the parser handle it */
4495 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4496 lex_state = LEX_INTERPEND;
4500 void pmflag(pmfl,ch)
4507 *pmfl |= PMf_GLOBAL;
4509 *pmfl |= PMf_CONTINUE;
4513 *pmfl |= PMf_MULTILINE;
4515 *pmfl |= PMf_SINGLELINE;
4517 *pmfl |= PMf_EXTENDED;
4527 s = scan_str(start);
4530 SvREFCNT_dec(lex_stuff);
4532 croak("Search pattern not terminated");
4535 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4536 if (multi_open == '?')
4537 pm->op_pmflags |= PMf_ONCE;
4538 while (*s && strchr("iogcmsx", *s))
4539 pmflag(&pm->op_pmflags,*s++);
4540 pm->op_pmpermflags = pm->op_pmflags;
4543 yylval.ival = OP_MATCH;
4556 yylval.ival = OP_NULL;
4558 s = scan_str(start);
4562 SvREFCNT_dec(lex_stuff);
4564 croak("Substitution pattern not terminated");
4567 if (s[-1] == multi_open)
4570 first_start = multi_start;
4574 SvREFCNT_dec(lex_stuff);
4577 SvREFCNT_dec(lex_repl);
4579 croak("Substitution replacement not terminated");
4581 multi_start = first_start; /* so whole substitution is taken together */
4583 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4584 while (*s && strchr("iogcmsex", *s)) {
4590 pmflag(&pm->op_pmflags,*s++);
4595 pm->op_pmflags |= PMf_EVAL;
4596 repl = newSVpv("",0);
4598 sv_catpv(repl, es ? "eval " : "do ");
4599 sv_catpvn(repl, "{ ", 2);
4600 sv_catsv(repl, lex_repl);
4601 sv_catpvn(repl, " };", 2);
4602 SvCOMPILED_on(repl);
4603 SvREFCNT_dec(lex_repl);
4607 pm->op_pmpermflags = pm->op_pmflags;
4609 yylval.ival = OP_SUBST;
4618 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4619 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4621 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4622 pm->op_pmflags |= PMf_SCANFIRST;
4623 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4624 pm->op_pmslen = SvCUR(pm->op_pmshort);
4626 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4627 if (pm->op_pmshort &&
4628 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4630 if (pm->op_pmflags & PMf_SCANFIRST) {
4631 SvREFCNT_dec(pm->op_pmshort);
4632 pm->op_pmshort = Nullsv;
4635 SvREFCNT_dec(pm->op_pmregexp->regmust);
4636 pm->op_pmregexp->regmust = Nullsv;
4640 /* promote the better string */
4641 if ((!pm->op_pmshort &&
4642 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4643 ((pm->op_pmflags & PMf_SCANFIRST) &&
4644 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4645 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4646 pm->op_pmshort = pm->op_pmregexp->regmust;
4647 pm->op_pmslen = SvCUR(pm->op_pmshort);
4648 pm->op_pmregexp->regmust = Nullsv;
4649 pm->op_pmflags |= PMf_SCANFIRST;
4665 yylval.ival = OP_NULL;
4667 s = scan_str(start);
4670 SvREFCNT_dec(lex_stuff);
4672 croak("Translation pattern not terminated");
4674 if (s[-1] == multi_open)
4680 SvREFCNT_dec(lex_stuff);
4683 SvREFCNT_dec(lex_repl);
4685 croak("Translation replacement not terminated");
4688 New(803,tbl,256,short);
4689 o = newPVOP(OP_TRANS, 0, (char*)tbl);
4691 complement = delete = squash = 0;
4692 while (*s == 'c' || *s == 'd' || *s == 's') {
4694 complement = OPpTRANS_COMPLEMENT;
4696 delete = OPpTRANS_DELETE;
4698 squash = OPpTRANS_SQUASH;
4701 o->op_private = delete|squash|complement;
4704 yylval.ival = OP_TRANS;
4714 I32 op_type = OP_SCALAR;
4721 int outer = (rsfp && !lex_inwhat);
4725 e = tokenbuf + sizeof tokenbuf - 1;
4728 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4729 if (*peek && strchr("`'\"",*peek)) {
4732 s = delimcpy(d, e, s, bufend, term, &len);
4743 deprecate("bare << to mean <<\"\"");
4744 for (; isALNUM(*s); s++) {
4749 if (d >= tokenbuf + sizeof tokenbuf - 1)
4750 croak("Delimiter for here document is too long");
4755 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4756 herewas = newSVpv(s,bufend-s);
4758 s--, herewas = newSVpv(s,d-s);
4759 s += SvCUR(herewas);
4761 tmpstr = NEWSV(87,80);
4762 sv_upgrade(tmpstr, SVt_PVIV);
4767 else if (term == '`') {
4768 op_type = OP_BACKTICK;
4769 SvIVX(tmpstr) = '\\';
4773 multi_start = curcop->cop_line;
4774 multi_open = multi_close = '<';
4778 while (s < bufend &&
4779 (*s != term || memNE(s,tokenbuf,len)) ) {
4784 curcop->cop_line = multi_start;
4785 missingterm(tokenbuf);
4787 sv_setpvn(tmpstr,d+1,s-d);
4789 sv_catpvn(herewas,s,bufend-s);
4790 sv_setsv(linestr,herewas);
4791 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4792 bufend = SvPVX(linestr) + SvCUR(linestr);
4795 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4796 while (s >= bufend) { /* multiple line string? */
4798 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4799 curcop->cop_line = multi_start;
4800 missingterm(tokenbuf);
4803 if (perldb && curstash != debstash) {
4804 SV *sv = NEWSV(88,0);
4806 sv_upgrade(sv, SVt_PVMG);
4807 sv_setsv(sv,linestr);
4808 av_store(GvAV(curcop->cop_filegv),
4809 (I32)curcop->cop_line,sv);
4811 bufend = SvPVX(linestr) + SvCUR(linestr);
4812 if (*s == term && memEQ(s,tokenbuf,len)) {
4815 sv_catsv(linestr,herewas);
4816 bufend = SvPVX(linestr) + SvCUR(linestr);
4820 sv_catsv(tmpstr,linestr);
4823 multi_end = curcop->cop_line;
4825 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4826 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4827 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4829 SvREFCNT_dec(herewas);
4831 yylval.ival = op_type;
4836 scan_inputsymbol(start)
4839 register char *s = start;
4845 e = tokenbuf + sizeof tokenbuf;
4846 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4847 if (len >= sizeof tokenbuf)
4848 croak("Excessively long <> operator");
4850 croak("Unterminated <> operator");
4852 if (*d == '$' && d[1]) d++;
4853 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4855 if (d - tokenbuf != len) {
4856 yylval.ival = OP_GLOB;
4858 s = scan_str(start);
4860 croak("Glob not terminated");
4866 (void)strcpy(d,"ARGV");
4869 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4870 OP *o = newOP(OP_PADSV, 0);
4872 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
4875 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4876 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4877 newUNOP(OP_RV2GV, 0,
4878 newUNOP(OP_RV2SV, 0,
4879 newGVOP(OP_GV, 0, gv))));
4881 yylval.ival = OP_NULL;
4884 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4885 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4886 yylval.ival = OP_NULL;
4899 register char *s = start;
4908 multi_start = curcop->cop_line;
4910 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4915 sv_upgrade(sv, SVt_PVIV);
4917 (void)SvPOK_only(sv); /* validate pointer */
4920 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4921 to = SvPVX(sv)+SvCUR(sv);
4922 if (multi_open == multi_close) {
4923 for (; s < bufend; s++,to++) {
4924 if (*s == '\n' && !rsfp)
4926 if (*s == '\\' && s+1 < bufend && term != '\\') {
4932 else if (*s == term)
4938 for (; s < bufend; s++,to++) {
4939 if (*s == '\n' && !rsfp)
4941 if (*s == '\\' && s+1 < bufend && term != '\\') {
4947 else if (*s == term && --brackets <= 0)
4949 else if (*s == multi_open)
4955 SvCUR_set(sv, to - SvPVX(sv));
4957 if (s < bufend) break; /* string ends on this line? */
4960 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4962 curcop->cop_line = multi_start;
4966 if (perldb && curstash != debstash) {
4967 SV *sv = NEWSV(88,0);
4969 sv_upgrade(sv, SVt_PVMG);
4970 sv_setsv(sv,linestr);
4971 av_store(GvAV(curcop->cop_filegv),
4972 (I32)curcop->cop_line, sv);
4974 bufend = SvPVX(linestr) + SvCUR(linestr);
4976 multi_end = curcop->cop_line;
4978 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4979 SvLEN_set(sv, SvCUR(sv) + 1);
4980 Renew(SvPVX(sv), SvLEN(sv), char);
4993 register char *s = start;
5001 static char number_too_long[] = "Number too long";
5005 croak("panic: scan_num");
5010 bool overflowed = FALSE;
5016 else if (s[1] == '.')
5032 yyerror("Illegal octal digit");
5034 case '0': case '1': case '2': case '3': case '4':
5035 case '5': case '6': case '7':
5038 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5039 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5045 if (!overflowed && (n >> shift) != u) {
5046 warn("Integer overflow in %s number",
5047 (shift == 4) ? "hex" : "octal");
5059 case '1': case '2': case '3': case '4': case '5':
5060 case '6': case '7': case '8': case '9': case '.':
5063 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5065 while (isDIGIT(*s) || *s == '_') {
5067 if (dowarn && lastub && s - lastub != 3)
5068 warn("Misplaced _ in number");
5073 croak(number_too_long);
5077 if (dowarn && lastub && s - lastub != 3)
5078 warn("Misplaced _ in number");
5079 if (*s == '.' && s[1] != '.') {
5082 for (; isDIGIT(*s) || *s == '_'; s++) {
5084 croak(number_too_long);
5089 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5092 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5093 if (*s == '+' || *s == '-')
5095 while (isDIGIT(*s)) {
5097 croak(number_too_long);
5103 SET_NUMERIC_STANDARD();
5104 value = atof(tokenbuf);
5106 if (!floatit && (double)tryiv == value)
5107 sv_setiv(sv, tryiv);
5109 sv_setnv(sv, value);
5113 yylval.opval = newSVOP(OP_CONST, 0, sv);
5125 SV *stuff = newSVpv("",0);
5126 bool needargs = FALSE;
5129 if (*s == '.' || *s == '}') {
5131 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5135 if (in_eval && !rsfp) {
5136 eol = strchr(s,'\n');
5141 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5143 for (t = s; t < eol; t++) {
5144 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5146 goto enough; /* ~~ must be first line in formline */
5148 if (*t == '@' || *t == '^')
5151 sv_catpvn(stuff, s, eol-s);
5155 s = filter_gets(linestr, rsfp, 0);
5156 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5157 bufend = bufptr + SvCUR(linestr);
5160 yyerror("Format not terminated");
5170 lex_state = LEX_NORMAL;
5171 nextval[nexttoke].ival = 0;
5175 lex_state = LEX_FORMLINE;
5176 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5178 nextval[nexttoke].ival = OP_FORMLINE;
5182 SvREFCNT_dec(stuff);
5194 cshlen = strlen(cshname);
5199 start_subparse(is_format, flags)
5204 I32 oldsavestack_ix = savestack_ix;
5205 CV* outsidecv = compcv;
5209 assert(SvTYPE(compcv) == SVt_PVCV);
5216 SAVESPTR(comppad_name);
5218 SAVEI32(comppad_name_fill);
5219 SAVEI32(min_intro_pending);
5220 SAVEI32(max_intro_pending);
5221 SAVEI32(pad_reset_pending);
5223 compcv = (CV*)NEWSV(1104,0);
5224 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5225 CvFLAGS(compcv) |= flags;
5228 av_push(comppad, Nullsv);
5229 curpad = AvARRAY(comppad);
5230 comppad_name = newAV();
5231 comppad_name_fill = 0;
5232 min_intro_pending = 0;
5234 subline = curcop->cop_line;
5236 av_store(comppad_name, 0, newSVpv("@_", 2));
5237 curpad[0] = (SV*)newAV();
5238 SvPADMY_on(curpad[0]); /* XXX Needed? */
5239 CvOWNER(compcv) = 0;
5240 New(666, CvMUTEXP(compcv), 1, pthread_mutex_t);
5241 MUTEX_INIT(CvMUTEXP(compcv));
5242 New(666, CvCONDP(compcv), 1, pthread_cond_t);
5243 COND_INIT(CvCONDP(compcv));
5244 #endif /* USE_THREADS */
5246 comppadlist = newAV();
5247 AvREAL_off(comppadlist);
5248 av_store(comppadlist, 0, (SV*)comppad_name);
5249 av_store(comppadlist, 1, (SV*)comppad);
5251 CvPADLIST(compcv) = comppadlist;
5252 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5254 CvOWNER(compcv) = 0;
5255 New(666, CvMUTEXP(compcv), 1, pthread_mutex_t);
5256 MUTEX_INIT(CvMUTEXP(compcv));
5257 New(666, CvCONDP(compcv), 1, pthread_cond_t);
5258 COND_INIT(CvCONDP(compcv));
5259 #endif /* USE_THREADS */
5261 return oldsavestack_ix;
5282 char *context = NULL;
5286 if (!yychar || (yychar == ';' && !rsfp))
5288 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5289 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5290 while (isSPACE(*oldoldbufptr))
5292 context = oldoldbufptr;
5293 contlen = bufptr - oldoldbufptr;
5295 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5296 oldbufptr != bufptr) {
5297 while (isSPACE(*oldbufptr))
5299 context = oldbufptr;
5300 contlen = bufptr - oldbufptr;
5302 else if (yychar > 255)
5303 where = "next token ???";
5304 else if ((yychar & 127) == 127) {
5305 if (lex_state == LEX_NORMAL ||
5306 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5307 where = "at end of line";
5309 where = "within pattern";
5311 where = "within string";
5314 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5316 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5317 else if (isPRINT_LC(yychar))
5318 sv_catpvf(where_sv, "%c", yychar);
5320 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5321 where = SvPVX(where_sv);
5323 msg = sv_2mortal(newSVpv(s, 0));
5324 sv_catpvf(msg, " at %_ line %ld, ",
5325 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5327 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5329 sv_catpvf(msg, "%s\n", where);
5330 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5332 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5333 (int)multi_open,(int)multi_close,(long)multi_start);
5339 sv_catsv(GvSV(errgv), msg);
5341 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5342 if (++error_count >= 10)
5343 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
5345 in_my_stash = Nullhv;