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 o->op_private = OPpCONST_ENTERED;
540 /* XXX see note in pp_entereval() for why we forgo typo
541 warnings if the symbol must be introduced in an eval.
543 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
544 kind == '$' ? SVt_PV :
545 kind == '@' ? SVt_PVAV :
546 kind == '%' ? SVt_PVHV :
557 OP *version = Nullop;
561 /* default VERSION number -- GBARR */
566 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
567 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
569 /* real VERSION number -- GBARR */
570 version = yylval.opval;
574 /* NOTE: The parser sees the package name and the VERSION swapped */
575 nextval[nexttoke].opval = version;
593 s = SvPV_force(sv, len);
597 while (s < send && *s != '\\')
604 if (s + 1 < send && (s[1] == '\\'))
605 s++; /* all that, just for this */
610 SvCUR_set(sv, d - SvPVX(sv));
618 register I32 op_type = yylval.ival;
620 if (op_type == OP_NULL) {
621 yylval.opval = lex_op;
625 if (op_type == OP_CONST || op_type == OP_READLINE) {
626 SV *sv = q(lex_stuff);
628 char *p = SvPV(sv, len);
629 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
635 sublex_info.super_state = lex_state;
636 sublex_info.sub_inwhat = op_type;
637 sublex_info.sub_op = lex_op;
638 lex_state = LEX_INTERPPUSH;
642 yylval.opval = lex_op;
655 lex_state = sublex_info.super_state;
657 SAVEI32(lex_brackets);
658 SAVEI32(lex_fakebrack);
659 SAVEI32(lex_casemods);
664 SAVEI16(curcop->cop_line);
667 SAVEPPTR(oldoldbufptr);
670 SAVEPPTR(lex_brackstack);
671 SAVEPPTR(lex_casestack);
676 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
677 bufend += SvCUR(linestr);
683 New(899, lex_brackstack, 120, char);
684 New(899, lex_casestack, 12, char);
685 SAVEFREEPV(lex_brackstack);
686 SAVEFREEPV(lex_casestack);
688 *lex_casestack = '\0';
690 lex_state = LEX_INTERPCONCAT;
691 curcop->cop_line = multi_start;
693 lex_inwhat = sublex_info.sub_inwhat;
694 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
695 lex_inpat = sublex_info.sub_op;
707 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
711 if (lex_casemods) { /* oops, we've got some unbalanced parens */
712 lex_state = LEX_INTERPCASEMOD;
716 /* Is there a right-hand side to take care of? */
717 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
720 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
721 bufend += SvCUR(linestr);
727 *lex_casestack = '\0';
729 if (SvCOMPILED(lex_repl)) {
730 lex_state = LEX_INTERPNORMAL;
734 lex_state = LEX_INTERPCONCAT;
740 bufend = SvPVX(linestr);
741 bufend += SvCUR(linestr);
751 register char *send = bufend;
752 SV *sv = NEWSV(93, send - start);
753 register char *s = start;
754 register char *d = SvPVX(sv);
755 bool dorange = FALSE;
759 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
760 : (lex_inwhat & OP_TRANS)
764 while (s < send || dorange) {
765 if (lex_inwhat == OP_TRANS) {
770 SvGROW(sv, SvLEN(sv) + 256);
774 for (i = (U8)*d; i <= max; i++)
779 else if (*s == '-' && s+1 < send && s != start) {
784 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
785 while (s < send && *s != ')')
788 else if (*s == '#' && lex_inpat &&
789 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
790 while (s+1 < send && *s != '\n')
793 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
795 else if (*s == '$') {
796 if (!lex_inpat) /* not a regexp, so $ must be var */
798 if (s + 1 < send && !strchr(")| \n\t", s[1]))
799 break; /* in regexp, $ might be tail anchor */
801 if (*s == '\\' && s+1 < send) {
803 if (*s && strchr(leave, *s)) {
808 if (lex_inwhat == OP_SUBST && !lex_inpat &&
809 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
812 warn("\\%c better written as $%c", *s, *s);
816 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
822 if (lex_inwhat == OP_TRANS) {
830 case '0': case '1': case '2': case '3':
831 case '4': case '5': case '6': case '7':
832 *d++ = scan_oct(s, 3, &len);
836 *d++ = scan_hex(++s, 2, &len);
872 SvCUR_set(sv, d - SvPVX(sv));
875 if (SvCUR(sv) + 5 < SvLEN(sv)) {
876 SvLEN_set(sv, SvCUR(sv) + 1);
877 Renew(SvPVX(sv), SvLEN(sv), char);
880 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
886 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
893 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
895 if (*s != '{' && *s != '[')
900 /* In a pattern, so maybe we have {n,m}. */
917 /* On the other hand, maybe we have a character class */
920 if (*s == ']' || *s == '^')
923 int weight = 2; /* let's weigh the evidence */
925 unsigned char un_char = 0, last_un_char;
926 char *send = strchr(s,']');
927 char tmpbuf[sizeof tokenbuf * 4];
929 if (!send) /* has to be an expression */
935 else if (isDIGIT(*s)) {
937 if (isDIGIT(s[1]) && s[2] == ']')
943 for (; s < send; s++) {
944 last_un_char = un_char;
945 un_char = (unsigned char)*s;
950 weight -= seen[un_char] * 10;
952 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
953 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
958 else if (*s == '$' && s[1] &&
959 strchr("[#!%*<>()-=",s[1])) {
960 if (/*{*/ strchr("])} =",s[2]))
969 if (strchr("wds]",s[1]))
971 else if (seen['\''] || seen['"'])
973 else if (strchr("rnftbxcav",s[1]))
975 else if (isDIGIT(s[1])) {
977 while (s[1] && isDIGIT(s[1]))
987 if (strchr("aA01! ",last_un_char))
989 if (strchr("zZ79~",s[1]))
993 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
994 isALPHA(*s) && s[1] && isALPHA(s[1])) {
999 if (keyword(tmpbuf, d - tmpbuf))
1002 if (un_char == last_un_char + 1)
1004 weight -= seen[un_char];
1009 if (weight >= 0) /* probably a character class */
1017 intuit_method(start,gv)
1021 char *s = start + (*start == '$');
1022 char tmpbuf[sizeof tokenbuf];
1032 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1033 if (*start == '$') {
1034 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1039 return *s == '(' ? FUNCMETH : METHOD;
1041 if (!keyword(tmpbuf, len)) {
1042 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1043 if (indirgv && GvCVu(indirgv))
1045 /* filehandle or package name makes it a method */
1046 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1048 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1049 return 0; /* no assumptions -- "=>" quotes bearword */
1050 nextval[nexttoke].opval =
1051 (OP*)newSVOP(OP_CONST, 0,
1053 nextval[nexttoke].opval->op_private =
1058 return *s == '(' ? FUNCMETH : METHOD;
1068 char *pdb = getenv("PERL5DB");
1072 return "BEGIN { require 'perl5db.pl' }";
1078 /* Encoded script support. filter_add() effectively inserts a
1079 * 'pre-processing' function into the current source input stream.
1080 * Note that the filter function only applies to the current source file
1081 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1083 * The datasv parameter (which may be NULL) can be used to pass
1084 * private data to this instance of the filter. The filter function
1085 * can recover the SV using the FILTER_DATA macro and use it to
1086 * store private buffers and state information.
1088 * The supplied datasv parameter is upgraded to a PVIO type
1089 * and the IoDIRP field is used to store the function pointer.
1090 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1091 * private use must be set using malloc'd pointers.
1093 static int filter_debug = 0;
1096 filter_add(funcp, datasv)
1100 if (!funcp){ /* temporary handy debugging hack to be deleted */
1101 filter_debug = atoi((char*)datasv);
1105 rsfp_filters = newAV();
1108 if (!SvUPGRADE(datasv, SVt_PVIO))
1109 die("Can't upgrade filter_add data to SVt_PVIO");
1110 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1112 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1113 av_unshift(rsfp_filters, 1);
1114 av_store(rsfp_filters, 0, datasv) ;
1119 /* Delete most recently added instance of this filter function. */
1125 warn("filter_del func %p", funcp);
1126 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1128 /* if filter is on top of stack (usual case) just pop it off */
1129 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1130 /* sv_free(av_pop(rsfp_filters)); */
1131 sv_free(av_shift(rsfp_filters));
1135 /* we need to search for the correct entry and clear it */
1136 die("filter_del can only delete in reverse order (currently)");
1140 /* Invoke the n'th filter function for the current rsfp. */
1142 filter_read(idx, buf_sv, maxlen)
1145 int maxlen; /* 0 = read one text line */
1152 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1153 /* Provide a default input filter to make life easy. */
1154 /* Note that we append to the line. This is handy. */
1156 warn("filter_read %d: from rsfp\n", idx);
1160 int old_len = SvCUR(buf_sv) ;
1162 /* ensure buf_sv is large enough */
1163 SvGROW(buf_sv, old_len + maxlen) ;
1164 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1165 if (PerlIO_error(rsfp))
1166 return -1; /* error */
1168 return 0 ; /* end of file */
1170 SvCUR_set(buf_sv, old_len + len) ;
1173 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1174 if (PerlIO_error(rsfp))
1175 return -1; /* error */
1177 return 0 ; /* end of file */
1180 return SvCUR(buf_sv);
1182 /* Skip this filter slot if filter has been deleted */
1183 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1185 warn("filter_read %d: skipped (filter deleted)\n", idx);
1186 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1188 /* Get function pointer hidden within datasv */
1189 funcp = (filter_t)IoDIRP(datasv);
1191 warn("filter_read %d: via function %p (%s)\n",
1192 idx, funcp, SvPV(datasv,na));
1193 /* Call function. The function is expected to */
1194 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1195 /* Return: <0:error, =0:eof, >0:not eof */
1196 return (*funcp)(idx, buf_sv, maxlen);
1200 filter_gets(sv,fp, append)
1202 register PerlIO *fp;
1208 SvCUR_set(sv, 0); /* start with empty line */
1209 if (FILTER_READ(0, sv, 0) > 0)
1210 return ( SvPVX(sv) ) ;
1215 return (sv_gets(sv, fp, append));
1221 static char* exp_name[] =
1222 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1225 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,':')
1249 && (tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1250 if (last_lop_op == OP_SORT &&
1251 tokenbuf[0] == '$' &&
1252 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1255 for (d = in_eval ? oldoldbufptr : linestart;
1256 d < bufend && *d != '\n';
1259 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1260 croak("Can't use \"my %s\" in sort comparison",
1266 yylval.opval = newOP(OP_PADANY, 0);
1267 yylval.opval->op_targ = tmp;
1271 /* Force them to make up their mind on "@foo". */
1272 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1273 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1274 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1275 yyerror(form("In string, %s now must be written as \\%s",
1276 tokenbuf, tokenbuf));
1279 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1280 yylval.opval->op_private = OPpCONST_ENTERED;
1281 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1282 ((tokenbuf[0] == '$') ? SVt_PV
1283 : (tokenbuf[0] == '@') ? SVt_PVAV
1288 switch (lex_state) {
1290 case LEX_NORMAL: /* Some compilers will produce faster */
1291 case LEX_INTERPNORMAL: /* code if we comment these out. */
1297 yylval = nextval[nexttoke];
1299 lex_state = lex_defer;
1300 expect = lex_expect;
1301 lex_defer = LEX_NORMAL;
1303 return(nexttype[nexttoke]);
1305 case LEX_INTERPCASEMOD:
1307 if (bufptr != bufend && *bufptr != '\\')
1308 croak("panic: INTERPCASEMOD");
1310 if (bufptr == bufend || bufptr[1] == 'E') {
1313 oldmod = lex_casestack[--lex_casemods];
1314 lex_casestack[lex_casemods] = '\0';
1315 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1317 lex_state = LEX_INTERPCONCAT;
1321 if (bufptr != bufend)
1323 lex_state = LEX_INTERPCONCAT;
1328 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1329 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1330 if (strchr("LU", *s) &&
1331 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1333 lex_casestack[--lex_casemods] = '\0';
1336 if (lex_casemods > 10) {
1337 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1338 if (newlb != lex_casestack) {
1340 lex_casestack = newlb;
1343 lex_casestack[lex_casemods++] = *s;
1344 lex_casestack[lex_casemods] = '\0';
1345 lex_state = LEX_INTERPCONCAT;
1346 nextval[nexttoke].ival = 0;
1349 nextval[nexttoke].ival = OP_LCFIRST;
1351 nextval[nexttoke].ival = OP_UCFIRST;
1353 nextval[nexttoke].ival = OP_LC;
1355 nextval[nexttoke].ival = OP_UC;
1357 nextval[nexttoke].ival = OP_QUOTEMETA;
1359 croak("panic: yylex");
1371 case LEX_INTERPPUSH:
1372 return sublex_push();
1374 case LEX_INTERPSTART:
1375 if (bufptr == bufend)
1376 return sublex_done();
1378 lex_dojoin = (*bufptr == '@');
1379 lex_state = LEX_INTERPNORMAL;
1381 nextval[nexttoke].ival = 0;
1383 force_ident("\"", '$');
1384 nextval[nexttoke].ival = 0;
1386 nextval[nexttoke].ival = 0;
1388 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1397 case LEX_INTERPENDMAYBE:
1398 if (intuit_more(bufptr)) {
1399 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1407 lex_state = LEX_INTERPCONCAT;
1411 case LEX_INTERPCONCAT:
1414 croak("panic: INTERPCONCAT");
1416 if (bufptr == bufend)
1417 return sublex_done();
1419 if (SvIVX(linestr) == '\'') {
1420 SV *sv = newSVsv(linestr);
1423 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1427 s = scan_const(bufptr);
1429 lex_state = LEX_INTERPCASEMOD;
1431 lex_state = LEX_INTERPSTART;
1435 nextval[nexttoke] = yylval;
1448 lex_state = LEX_NORMAL;
1449 s = scan_formline(bufptr);
1456 oldoldbufptr = oldbufptr;
1459 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1465 croak("Unrecognized character \\%03o", *s & 255);
1468 goto fake_eof; /* emulate EOF on ^D or ^Z */
1474 yyerror("Missing right bracket");
1478 goto retry; /* ignore stray nulls */
1481 if (!in_eval && !preambled) {
1483 sv_setpv(linestr,incl_perldb());
1485 sv_catpv(linestr,";");
1487 while(AvFILL(preambleav) >= 0) {
1488 SV *tmpsv = av_shift(preambleav);
1489 sv_catsv(linestr, tmpsv);
1490 sv_catpv(linestr, ";");
1493 sv_free((SV*)preambleav);
1496 if (minus_n || minus_p) {
1497 sv_catpv(linestr, "LINE: while (<>) {");
1499 sv_catpv(linestr,"chomp;");
1501 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1503 GvIMPORTED_AV_on(gv);
1505 if (strchr("/'\"", *splitstr)
1506 && strchr(splitstr + 1, *splitstr))
1507 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1510 s = "'~#\200\1'"; /* surely one char is unused...*/
1511 while (s[1] && strchr(splitstr, *s)) s++;
1513 sv_catpvf(linestr, "@F=split(%s%c",
1514 "q" + (delim == '\''), delim);
1515 for (s = splitstr; *s; s++) {
1517 sv_catpvn(linestr, "\\", 1);
1518 sv_catpvn(linestr, s, 1);
1520 sv_catpvf(linestr, "%c);", delim);
1524 sv_catpv(linestr,"@F=split(' ');");
1527 sv_catpv(linestr, "\n");
1528 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1529 bufend = SvPVX(linestr) + SvCUR(linestr);
1530 if (perldb && curstash != debstash) {
1531 SV *sv = NEWSV(85,0);
1533 sv_upgrade(sv, SVt_PVMG);
1534 sv_setsv(sv,linestr);
1535 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1540 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1543 if (preprocess && !in_eval)
1544 (void)my_pclose(rsfp);
1545 else if ((PerlIO *)rsfp == PerlIO_stdin())
1546 PerlIO_clearerr(rsfp);
1548 (void)PerlIO_close(rsfp);
1551 if (!in_eval && (minus_n || minus_p)) {
1552 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1553 sv_catpv(linestr,";}");
1554 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1555 bufend = SvPVX(linestr) + SvCUR(linestr);
1556 minus_n = minus_p = 0;
1559 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1560 sv_setpv(linestr,"");
1561 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1564 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1567 /* Incest with pod. */
1568 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1569 sv_setpv(linestr, "");
1570 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1571 bufend = SvPVX(linestr) + SvCUR(linestr);
1576 } while (doextract);
1577 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1578 if (perldb && curstash != debstash) {
1579 SV *sv = NEWSV(85,0);
1581 sv_upgrade(sv, SVt_PVMG);
1582 sv_setsv(sv,linestr);
1583 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1585 bufend = SvPVX(linestr) + SvCUR(linestr);
1586 if (curcop->cop_line == 1) {
1587 while (s < bufend && isSPACE(*s))
1589 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1593 if (*s == '#' && *(s+1) == '!')
1595 #ifdef ALTERNATE_SHEBANG
1597 static char as[] = ALTERNATE_SHEBANG;
1598 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1599 d = s + (sizeof(as) - 1);
1601 #endif /* ALTERNATE_SHEBANG */
1610 while (*d && !isSPACE(*d))
1614 #ifdef ARG_ZERO_IS_SCRIPT
1615 if (ipathend > ipath) {
1617 * HP-UX (at least) sets argv[0] to the script name,
1618 * which makes $^X incorrect. And Digital UNIX and Linux,
1619 * at least, set argv[0] to the basename of the Perl
1620 * interpreter. So, having found "#!", we'll set it right.
1622 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1623 assert(SvPOK(x) || SvGMAGICAL(x));
1624 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1625 sv_setpvn(x, ipath, ipathend - ipath);
1628 TAINT_NOT; /* $^X is always tainted, but that's OK */
1630 #endif /* ARG_ZERO_IS_SCRIPT */
1635 d = instr(s,"perl -");
1637 d = instr(s,"perl");
1638 #ifdef ALTERNATE_SHEBANG
1640 * If the ALTERNATE_SHEBANG on this system starts with a
1641 * character that can be part of a Perl expression, then if
1642 * we see it but not "perl", we're probably looking at the
1643 * start of Perl code, not a request to hand off to some
1644 * other interpreter. Similarly, if "perl" is there, but
1645 * not in the first 'word' of the line, we assume the line
1646 * contains the start of the Perl program.
1648 if (d && *s != '#') {
1650 while (*c && !strchr("; \t\r\n\f\v#", *c))
1653 d = Nullch; /* "perl" not in first word; ignore */
1655 *s = '#'; /* Don't try to parse shebang line */
1657 #endif /* ALTERNATE_SHEBANG */
1662 !instr(s,"indir") &&
1663 instr(origargv[0],"perl"))
1669 while (s < bufend && isSPACE(*s))
1672 Newz(899,newargv,origargc+3,char*);
1674 while (s < bufend && !isSPACE(*s))
1677 Copy(origargv+1, newargv+2, origargc+1, char*);
1682 execv(ipath, newargv);
1683 croak("Can't exec %s", ipath);
1686 U32 oldpdb = perldb;
1687 bool oldn = minus_n;
1688 bool oldp = minus_p;
1690 while (*d && !isSPACE(*d)) d++;
1691 while (*d == ' ' || *d == '\t') d++;
1695 if (*d == 'M' || *d == 'm') {
1697 while (*d && !isSPACE(*d)) d++;
1698 croak("Too late for \"-%.*s\" option",
1701 d = moreswitches(d);
1703 if (perldb && !oldpdb ||
1704 ( minus_n || minus_p ) && !(oldn || oldp) )
1705 /* if we have already added "LINE: while (<>) {",
1706 we must not do it again */
1708 sv_setpv(linestr, "");
1709 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1710 bufend = SvPVX(linestr) + SvCUR(linestr);
1713 (void)gv_fetchfile(origfilename);
1720 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1722 lex_state = LEX_FORMLINE;
1727 warn("Illegal character \\%03o (carriage return)", '\r');
1729 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1730 case ' ': case '\t': case '\f': case 013:
1735 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1737 while (s < d && *s != '\n')
1742 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1744 lex_state = LEX_FORMLINE;
1754 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1759 while (s < bufend && (*s == ' ' || *s == '\t'))
1762 if (strnEQ(s,"=>",2)) {
1764 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1765 (int)tmp, (int)tmp);
1766 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1767 OPERATOR('-'); /* unary minus */
1769 last_uni = oldbufptr;
1770 last_lop_op = OP_FTEREAD; /* good enough */
1772 case 'r': FTST(OP_FTEREAD);
1773 case 'w': FTST(OP_FTEWRITE);
1774 case 'x': FTST(OP_FTEEXEC);
1775 case 'o': FTST(OP_FTEOWNED);
1776 case 'R': FTST(OP_FTRREAD);
1777 case 'W': FTST(OP_FTRWRITE);
1778 case 'X': FTST(OP_FTREXEC);
1779 case 'O': FTST(OP_FTROWNED);
1780 case 'e': FTST(OP_FTIS);
1781 case 'z': FTST(OP_FTZERO);
1782 case 's': FTST(OP_FTSIZE);
1783 case 'f': FTST(OP_FTFILE);
1784 case 'd': FTST(OP_FTDIR);
1785 case 'l': FTST(OP_FTLINK);
1786 case 'p': FTST(OP_FTPIPE);
1787 case 'S': FTST(OP_FTSOCK);
1788 case 'u': FTST(OP_FTSUID);
1789 case 'g': FTST(OP_FTSGID);
1790 case 'k': FTST(OP_FTSVTX);
1791 case 'b': FTST(OP_FTBLK);
1792 case 'c': FTST(OP_FTCHR);
1793 case 't': FTST(OP_FTTTY);
1794 case 'T': FTST(OP_FTTEXT);
1795 case 'B': FTST(OP_FTBINARY);
1796 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1797 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1798 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1800 croak("Unrecognized file test: -%c", (int)tmp);
1807 if (expect == XOPERATOR)
1812 else if (*s == '>') {
1815 if (isIDFIRST(*s)) {
1816 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1824 if (expect == XOPERATOR)
1827 if (isSPACE(*s) || !isSPACE(*bufptr))
1829 OPERATOR('-'); /* unary minus */
1836 if (expect == XOPERATOR)
1841 if (expect == XOPERATOR)
1844 if (isSPACE(*s) || !isSPACE(*bufptr))
1850 if (expect != XOPERATOR) {
1851 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1853 force_ident(tokenbuf, '*');
1866 if (expect == XOPERATOR) {
1871 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1874 yyerror("Final % should be \\% or %name");
1877 pending_ident = '%';
1899 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1900 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1905 if (curcop->cop_line < copline)
1906 copline = curcop->cop_line;
1917 if (lex_brackets <= 0)
1918 yyerror("Unmatched right bracket");
1921 if (lex_state == LEX_INTERPNORMAL) {
1922 if (lex_brackets == 0) {
1923 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1924 lex_state = LEX_INTERPEND;
1931 if (lex_brackets > 100) {
1932 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1933 if (newlb != lex_brackstack) {
1935 lex_brackstack = newlb;
1940 if (lex_formbrack) {
1944 if (oldoldbufptr == last_lop)
1945 lex_brackstack[lex_brackets++] = XTERM;
1947 lex_brackstack[lex_brackets++] = XOPERATOR;
1948 OPERATOR(HASHBRACK);
1950 while (s < bufend && (*s == ' ' || *s == '\t'))
1954 if (d < bufend && *d == '-') {
1957 while (d < bufend && (*d == ' ' || *d == '\t'))
1960 if (d < bufend && isIDFIRST(*d)) {
1961 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1963 while (d < bufend && (*d == ' ' || *d == '\t'))
1966 char minus = (tokenbuf[0] == '-');
1968 (keyword(tokenbuf + 1, len) ||
1969 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1970 perl_get_cv(tokenbuf + 1, FALSE) ))
1971 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1972 tokenbuf + !minus, tokenbuf + !minus);
1973 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1980 lex_brackstack[lex_brackets++] = XSTATE;
1984 lex_brackstack[lex_brackets++] = XOPERATOR;
1989 if (oldoldbufptr == last_lop)
1990 lex_brackstack[lex_brackets++] = XTERM;
1992 lex_brackstack[lex_brackets++] = XOPERATOR;
1995 OPERATOR(HASHBRACK);
1997 for (t = s; t < bufend && isALNUM(*t); t++) ;
1999 else if (*s == '\'' || *s == '"') {
2006 while (t < bufend && isSPACE(*t))
2008 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2009 OPERATOR(HASHBRACK);
2013 lex_brackstack[lex_brackets-1] = XSTATE;
2019 yylval.ival = curcop->cop_line;
2020 if (isSPACE(*s) || *s == '#')
2021 copline = NOLINE; /* invalidate current command line number */
2026 if (lex_brackets <= 0)
2027 yyerror("Unmatched right bracket");
2029 expect = (expectation)lex_brackstack[--lex_brackets];
2030 if (lex_brackets < lex_formbrack)
2032 if (lex_state == LEX_INTERPNORMAL) {
2033 if (lex_brackets == 0) {
2034 if (lex_fakebrack) {
2035 lex_state = LEX_INTERPEND;
2037 return yylex(); /* ignore fake brackets */
2039 if (*s == '-' && s[1] == '>')
2040 lex_state = LEX_INTERPENDMAYBE;
2041 else if (*s != '[' && *s != '{')
2042 lex_state = LEX_INTERPEND;
2045 if (lex_brackets < lex_fakebrack) {
2048 return yylex(); /* ignore fake brackets */
2058 if (expect == XOPERATOR) {
2059 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2067 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2070 force_ident(tokenbuf, '&');
2074 yylval.ival = (OPpENTERSUB_AMPER<<8);
2093 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2094 warn("Reversed %c= operator",(int)tmp);
2096 if (expect == XSTATE && isALPHA(tmp) &&
2097 (s == linestart+1 || s[-2] == '\n') )
2099 if (in_eval && !rsfp) {
2104 if (strnEQ(s,"=cut",4)) {
2121 if (lex_brackets < lex_formbrack) {
2123 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2124 if (*t == '\n' || *t == '#') {
2142 if (expect != XOPERATOR) {
2143 if (s[1] != '<' && !strchr(s,'>'))
2146 s = scan_heredoc(s);
2148 s = scan_inputsymbol(s);
2149 TERM(sublex_start());
2154 SHop(OP_LEFT_SHIFT);
2168 SHop(OP_RIGHT_SHIFT);
2177 if (expect == XOPERATOR) {
2178 if (lex_formbrack && lex_brackets == lex_formbrack) {
2181 return ','; /* grandfather non-comma-format format */
2185 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2186 if (expect == XOPERATOR)
2187 no_op("Array length", bufptr);
2189 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2194 pending_ident = '#';
2198 if (expect == XOPERATOR)
2199 no_op("Scalar", bufptr);
2201 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2204 yyerror("Final $ should be \\$ or $name");
2208 /* This kludge not intended to be bulletproof. */
2209 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2210 yylval.opval = newSVOP(OP_CONST, 0,
2211 newSViv((IV)compiling.cop_arybase));
2212 yylval.opval->op_private = OPpCONST_ARYBASE;
2217 if (lex_state == LEX_NORMAL)
2220 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2226 isSPACE(*t) || isALNUM(*t) || *t == '$';
2229 bufptr = skipspace(bufptr);
2230 while (t < bufend && *t != ']')
2232 warn("Multidimensional syntax %.*s not supported",
2233 (t - bufptr) + 1, bufptr);
2237 else if (*s == '{') {
2239 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2240 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2242 char tmpbuf[sizeof tokenbuf];
2244 for (t++; isSPACE(*t); t++) ;
2245 if (isIDFIRST(*t)) {
2246 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2247 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2248 warn("You need to quote \"%s\"", tmpbuf);
2255 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2256 bool islop = (last_lop == oldoldbufptr);
2257 if (!islop || last_lop_op == OP_GREPSTART)
2259 else if (strchr("$@\"'`q", *s))
2260 expect = XTERM; /* e.g. print $fh "foo" */
2261 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2262 expect = XTERM; /* e.g. print $fh &sub */
2263 else if (isIDFIRST(*s)) {
2264 char tmpbuf[sizeof tokenbuf];
2265 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2266 if (keyword(tmpbuf, len))
2267 expect = XTERM; /* e.g. print $fh length() */
2269 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2270 if (gv && GvCVu(gv))
2271 expect = XTERM; /* e.g. print $fh subr() */
2274 else if (isDIGIT(*s))
2275 expect = XTERM; /* e.g. print $fh 3 */
2276 else if (*s == '.' && isDIGIT(s[1]))
2277 expect = XTERM; /* e.g. print $fh .3 */
2278 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2279 expect = XTERM; /* e.g. print $fh -1 */
2280 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2281 expect = XTERM; /* print $fh <<"EOF" */
2283 pending_ident = '$';
2287 if (expect == XOPERATOR)
2290 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2293 yyerror("Final @ should be \\@ or @name");
2296 if (lex_state == LEX_NORMAL)
2298 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2302 /* Warn about @ where they meant $. */
2304 if (*s == '[' || *s == '{') {
2306 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2308 if (*t == '}' || *t == ']') {
2310 bufptr = skipspace(bufptr);
2311 warn("Scalar value %.*s better written as $%.*s",
2312 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2317 pending_ident = '@';
2320 case '/': /* may either be division or pattern */
2321 case '?': /* may either be conditional or pattern */
2322 if (expect != XOPERATOR) {
2325 TERM(sublex_start());
2333 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2334 (s == linestart || s[-1] == '\n') ) {
2339 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2345 yylval.ival = OPf_SPECIAL;
2351 if (expect != XOPERATOR)
2356 case '0': case '1': case '2': case '3': case '4':
2357 case '5': case '6': case '7': case '8': case '9':
2359 if (expect == XOPERATOR)
2365 if (expect == XOPERATOR) {
2366 if (lex_formbrack && lex_brackets == lex_formbrack) {
2369 return ','; /* grandfather non-comma-format format */
2375 missingterm((char*)0);
2376 yylval.ival = OP_CONST;
2377 TERM(sublex_start());
2381 if (expect == XOPERATOR) {
2382 if (lex_formbrack && lex_brackets == lex_formbrack) {
2385 return ','; /* grandfather non-comma-format format */
2391 missingterm((char*)0);
2392 yylval.ival = OP_CONST;
2393 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2394 if (*d == '$' || *d == '@' || *d == '\\') {
2395 yylval.ival = OP_STRINGIFY;
2399 TERM(sublex_start());
2403 if (expect == XOPERATOR)
2404 no_op("Backticks",s);
2406 missingterm((char*)0);
2407 yylval.ival = OP_BACKTICK;
2409 TERM(sublex_start());
2413 if (dowarn && lex_inwhat && isDIGIT(*s))
2414 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2415 if (expect == XOPERATOR)
2416 no_op("Backslash",s);
2420 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2456 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2458 /* Some keywords can be followed by any delimiter, including ':' */
2459 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2460 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2461 (tokenbuf[0] == 'q' &&
2462 strchr("qwx", tokenbuf[1]))));
2464 /* x::* is just a word, unless x is "CORE" */
2465 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2469 while (d < bufend && isSPACE(*d))
2470 d++; /* no comments skipped here, or s### is misparsed */
2472 /* Is this a label? */
2473 if (!tmp && expect == XSTATE
2474 && d < bufend && *d == ':' && *(d + 1) != ':') {
2476 yylval.pval = savepv(tokenbuf);
2481 /* Check for keywords */
2482 tmp = keyword(tokenbuf, len);
2484 /* Is this a word before a => operator? */
2485 if (strnEQ(d,"=>",2)) {
2487 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2488 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2489 tokenbuf, tokenbuf);
2490 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2491 yylval.opval->op_private = OPpCONST_BARE;
2495 if (tmp < 0) { /* second-class keyword? */
2497 if (expect != XOPERATOR &&
2498 (*s != ':' || s[1] != ':') &&
2499 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2511 default: /* not a keyword */
2515 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2517 /* Get the rest if it looks like a package qualifier */
2519 if (*s == '\'' || *s == ':' && s[1] == ':') {
2520 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2523 croak("Bad name after %s::", tokenbuf);
2526 if (expect == XOPERATOR) {
2527 if (bufptr == linestart) {
2533 no_op("Bareword",s);
2536 /* Look for a subroutine with this name in current package. */
2538 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2540 /* Presume this is going to be a bareword of some sort. */
2543 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2544 yylval.opval->op_private = OPpCONST_BARE;
2546 /* See if it's the indirect object for a list operator. */
2549 oldoldbufptr < bufptr &&
2550 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2551 /* NO SKIPSPACE BEFORE HERE! */
2553 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2555 bool immediate_paren = *s == '(';
2557 /* (Now we can afford to cross potential line boundary.) */
2560 /* Two barewords in a row may indicate method call. */
2562 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2565 /* If not a declared subroutine, it's an indirect object. */
2566 /* (But it's an indir obj regardless for sort.) */
2568 if ((last_lop_op == OP_SORT ||
2569 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2570 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2571 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2576 /* If followed by a paren, it's certainly a subroutine. */
2582 if (gv && GvCVu(gv)) {
2583 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2584 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2589 nextval[nexttoke].opval = yylval.opval;
2596 /* If followed by var or block, call it a method (unless sub) */
2598 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2599 last_lop = oldbufptr;
2600 last_lop_op = OP_METHOD;
2604 /* If followed by a bareword, see if it looks like indir obj. */
2606 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2609 /* Not a method, so call it a subroutine (if defined) */
2611 if (gv && GvCVu(gv)) {
2613 if (lastchar == '-')
2614 warn("Ambiguous use of -%s resolved as -&%s()",
2615 tokenbuf, tokenbuf);
2616 last_lop = oldbufptr;
2617 last_lop_op = OP_ENTERSUB;
2618 /* Check for a constant sub */
2620 if ((sv = cv_const_sv(cv))) {
2622 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2623 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2624 yylval.opval->op_private = 0;
2628 /* Resolve to GV now. */
2629 op_free(yylval.opval);
2630 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2631 /* Is there a prototype? */
2634 char *proto = SvPV((SV*)cv, len);
2637 if (strEQ(proto, "$"))
2639 if (*proto == '&' && *s == '{') {
2640 sv_setpv(subname,"__ANON__");
2644 nextval[nexttoke].opval = yylval.opval;
2650 if (hints & HINT_STRICT_SUBS &&
2653 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2654 last_lop_op != OP_ACCEPT &&
2655 last_lop_op != OP_PIPE_OP &&
2656 last_lop_op != OP_SOCKPAIR)
2659 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2664 /* Call it a bare word */
2668 if (lastchar != '-') {
2669 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2671 warn(warn_reserved, tokenbuf);
2674 if (lastchar && strchr("*%&", lastchar)) {
2675 warn("Operator or semicolon missing before %c%s",
2676 lastchar, tokenbuf);
2677 warn("Ambiguous use of %c resolved as operator %c",
2678 lastchar, lastchar);
2684 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2685 newSVsv(GvSV(curcop->cop_filegv)));
2689 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2690 newSVpvf("%ld", (long)curcop->cop_line));
2693 case KEY___PACKAGE__:
2694 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2696 ? newSVsv(curstname)
2705 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2706 char *pname = "main";
2707 if (tokenbuf[2] == 'D')
2708 pname = HvNAME(curstash ? curstash : defstash);
2709 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2712 GvIOp(gv) = newIO();
2713 IoIFP(GvIOp(gv)) = rsfp;
2714 #if defined(HAS_FCNTL) && defined(F_SETFD)
2716 int fd = PerlIO_fileno(rsfp);
2717 fcntl(fd,F_SETFD,fd >= 3);
2720 /* Mark this internal pseudo-handle as clean */
2721 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2723 IoTYPE(GvIOp(gv)) = '|';
2724 else if ((PerlIO*)rsfp == PerlIO_stdin())
2725 IoTYPE(GvIOp(gv)) = '-';
2727 IoTYPE(GvIOp(gv)) = '<';
2738 if (expect == XSTATE) {
2745 if (*s == ':' && s[1] == ':') {
2748 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2749 tmp = keyword(tokenbuf, len);
2763 LOP(OP_ACCEPT,XTERM);
2769 LOP(OP_ATAN2,XTERM);
2778 LOP(OP_BLESS,XTERM);
2787 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2807 LOP(OP_CRYPT,XTERM);
2811 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2812 if (*d != '0' && isDIGIT(*d))
2813 yywarn("chmod: mode argument is missing initial 0");
2815 LOP(OP_CHMOD,XTERM);
2818 LOP(OP_CHOWN,XTERM);
2821 LOP(OP_CONNECT,XTERM);
2837 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2841 hints |= HINT_BLOCK_SCOPE;
2851 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2852 LOP(OP_DBMOPEN,XTERM);
2858 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2865 yylval.ival = curcop->cop_line;
2879 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2880 UNIBRACK(OP_ENTEREVAL);
2895 case KEY_endhostent:
2901 case KEY_endservent:
2904 case KEY_endprotoent:
2915 yylval.ival = curcop->cop_line;
2917 if (isIDFIRST(*s)) {
2919 if ((bufend - p) >= 3 &&
2920 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2924 croak("Missing $ on loop variable");
2929 LOP(OP_FORMLINE,XTERM);
2935 LOP(OP_FCNTL,XTERM);
2941 LOP(OP_FLOCK,XTERM);
2950 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2953 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2968 case KEY_getpriority:
2969 LOP(OP_GETPRIORITY,XTERM);
2971 case KEY_getprotobyname:
2974 case KEY_getprotobynumber:
2975 LOP(OP_GPBYNUMBER,XTERM);
2977 case KEY_getprotoent:
2989 case KEY_getpeername:
2990 UNI(OP_GETPEERNAME);
2992 case KEY_gethostbyname:
2995 case KEY_gethostbyaddr:
2996 LOP(OP_GHBYADDR,XTERM);
2998 case KEY_gethostent:
3001 case KEY_getnetbyname:
3004 case KEY_getnetbyaddr:
3005 LOP(OP_GNBYADDR,XTERM);
3010 case KEY_getservbyname:
3011 LOP(OP_GSBYNAME,XTERM);
3013 case KEY_getservbyport:
3014 LOP(OP_GSBYPORT,XTERM);
3016 case KEY_getservent:
3019 case KEY_getsockname:
3020 UNI(OP_GETSOCKNAME);
3022 case KEY_getsockopt:
3023 LOP(OP_GSOCKOPT,XTERM);
3045 yylval.ival = curcop->cop_line;
3049 LOP(OP_INDEX,XTERM);
3055 LOP(OP_IOCTL,XTERM);
3067 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3098 LOP(OP_LISTEN,XTERM);
3105 TERM(sublex_start());
3108 LOP(OP_MAPSTART,XREF);
3111 LOP(OP_MKDIR,XTERM);
3114 LOP(OP_MSGCTL,XTERM);
3117 LOP(OP_MSGGET,XTERM);
3120 LOP(OP_MSGRCV,XTERM);
3123 LOP(OP_MSGSND,XTERM);
3128 if (isIDFIRST(*s)) {
3129 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
3130 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3134 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3141 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3148 if (expect != XSTATE)
3149 yyerror("\"no\" not allowed in expression");
3150 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3151 s = force_version(s);
3160 if (isIDFIRST(*s)) {
3162 for (d = s; isALNUM(*d); d++) ;
3164 if (strchr("|&*+-=!?:.", *t))
3165 warn("Precedence problem: open %.*s should be open(%.*s)",
3171 yylval.ival = OP_OR;
3181 LOP(OP_OPEN_DIR,XTERM);
3184 checkcomma(s,tokenbuf,"filehandle");
3188 checkcomma(s,tokenbuf,"filehandle");
3207 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3211 LOP(OP_PIPE_OP,XTERM);
3216 missingterm((char*)0);
3217 yylval.ival = OP_CONST;
3218 TERM(sublex_start());
3226 missingterm((char*)0);
3227 if (dowarn && SvLEN(lex_stuff)) {
3228 d = SvPV_force(lex_stuff, len);
3229 for (; len; --len, ++d) {
3231 warn("Possible attempt to separate words with commas");
3235 warn("Possible attempt to put comments in qw() list");
3241 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3245 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3248 yylval.ival = OP_SPLIT;
3252 last_lop = oldbufptr;
3253 last_lop_op = OP_SPLIT;
3259 missingterm((char*)0);
3260 yylval.ival = OP_STRINGIFY;
3261 if (SvIVX(lex_stuff) == '\'')
3262 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3263 TERM(sublex_start());
3268 missingterm((char*)0);
3269 yylval.ival = OP_BACKTICK;
3271 TERM(sublex_start());
3278 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3279 if (isIDFIRST(*tokenbuf))
3280 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3282 yyerror("<> should be quotes");
3289 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3293 LOP(OP_RENAME,XTERM);
3302 LOP(OP_RINDEX,XTERM);
3325 LOP(OP_REVERSE,XTERM);
3336 TERM(sublex_start());
3338 TOKEN(1); /* force error */
3347 LOP(OP_SELECT,XTERM);
3353 LOP(OP_SEMCTL,XTERM);
3356 LOP(OP_SEMGET,XTERM);
3359 LOP(OP_SEMOP,XTERM);
3365 LOP(OP_SETPGRP,XTERM);
3367 case KEY_setpriority:
3368 LOP(OP_SETPRIORITY,XTERM);
3370 case KEY_sethostent:
3376 case KEY_setservent:
3379 case KEY_setprotoent:
3389 LOP(OP_SEEKDIR,XTERM);
3391 case KEY_setsockopt:
3392 LOP(OP_SSOCKOPT,XTERM);
3398 LOP(OP_SHMCTL,XTERM);
3401 LOP(OP_SHMGET,XTERM);
3404 LOP(OP_SHMREAD,XTERM);
3407 LOP(OP_SHMWRITE,XTERM);
3410 LOP(OP_SHUTDOWN,XTERM);
3419 LOP(OP_SOCKET,XTERM);
3421 case KEY_socketpair:
3422 LOP(OP_SOCKPAIR,XTERM);
3425 checkcomma(s,tokenbuf,"subroutine name");
3427 if (*s == ';' || *s == ')') /* probably a close */
3428 croak("sort is now a reserved word");
3430 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3434 LOP(OP_SPLIT,XTERM);
3437 LOP(OP_SPRINTF,XTERM);
3440 LOP(OP_SPLICE,XTERM);
3456 LOP(OP_SUBSTR,XTERM);
3463 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3464 char tmpbuf[sizeof tokenbuf];
3466 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3467 if (strchr(tmpbuf, ':'))
3468 sv_setpv(subname, tmpbuf);
3470 sv_setsv(subname,curstname);
3471 sv_catpvn(subname,"::",2);
3472 sv_catpvn(subname,tmpbuf,len);
3474 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3478 expect = XTERMBLOCK;
3479 sv_setpv(subname,"?");
3482 if (tmp == KEY_format) {
3485 lex_formbrack = lex_brackets + 1;
3489 /* Look for a prototype */
3496 SvREFCNT_dec(lex_stuff);
3498 croak("Prototype not terminated");
3501 d = SvPVX(lex_stuff);
3503 for (p = d; *p; ++p) {
3508 SvCUR(lex_stuff) = tmp;
3511 nextval[1] = nextval[0];
3512 nexttype[1] = nexttype[0];
3513 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3514 nexttype[0] = THING;
3515 if (nexttoke == 1) {
3516 lex_defer = lex_state;
3517 lex_expect = expect;
3518 lex_state = LEX_KNOWNEXT;
3523 if (*SvPV(subname,na) == '?') {
3524 sv_setpv(subname,"__ANON__");
3531 LOP(OP_SYSTEM,XREF);
3534 LOP(OP_SYMLINK,XTERM);
3537 LOP(OP_SYSCALL,XTERM);
3540 LOP(OP_SYSOPEN,XTERM);
3543 LOP(OP_SYSSEEK,XTERM);
3546 LOP(OP_SYSREAD,XTERM);
3549 LOP(OP_SYSWRITE,XTERM);
3553 TERM(sublex_start());
3574 LOP(OP_TRUNCATE,XTERM);
3586 yylval.ival = curcop->cop_line;
3590 yylval.ival = curcop->cop_line;
3594 LOP(OP_UNLINK,XTERM);
3600 LOP(OP_UNPACK,XTERM);
3603 LOP(OP_UTIME,XTERM);
3607 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3608 if (*d != '0' && isDIGIT(*d))
3609 yywarn("umask: argument is missing initial 0");
3614 LOP(OP_UNSHIFT,XTERM);
3617 if (expect != XSTATE)
3618 yyerror("\"use\" not allowed in expression");
3621 s = force_version(s);
3622 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3623 nextval[nexttoke].opval = Nullop;
3628 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3629 s = force_version(s);
3642 yylval.ival = curcop->cop_line;
3646 hints |= HINT_BLOCK_SCOPE;
3653 LOP(OP_WAITPID,XTERM);
3659 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3663 if (expect == XOPERATOR)
3669 yylval.ival = OP_XOR;
3674 TERM(sublex_start());
3687 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3688 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3689 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3690 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3691 if (strEQ(d,"__END__")) return KEY___END__;
3695 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3700 if (strEQ(d,"and")) return -KEY_and;
3701 if (strEQ(d,"abs")) return -KEY_abs;
3704 if (strEQ(d,"alarm")) return -KEY_alarm;
3705 if (strEQ(d,"atan2")) return -KEY_atan2;
3708 if (strEQ(d,"accept")) return -KEY_accept;
3713 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3716 if (strEQ(d,"bless")) return -KEY_bless;
3717 if (strEQ(d,"bind")) return -KEY_bind;
3718 if (strEQ(d,"binmode")) return -KEY_binmode;
3721 if (strEQ(d,"CORE")) return -KEY_CORE;
3726 if (strEQ(d,"cmp")) return -KEY_cmp;
3727 if (strEQ(d,"chr")) return -KEY_chr;
3728 if (strEQ(d,"cos")) return -KEY_cos;
3731 if (strEQ(d,"chop")) return KEY_chop;
3734 if (strEQ(d,"close")) return -KEY_close;
3735 if (strEQ(d,"chdir")) return -KEY_chdir;
3736 if (strEQ(d,"chomp")) return KEY_chomp;
3737 if (strEQ(d,"chmod")) return -KEY_chmod;
3738 if (strEQ(d,"chown")) return -KEY_chown;
3739 if (strEQ(d,"crypt")) return -KEY_crypt;
3742 if (strEQ(d,"chroot")) return -KEY_chroot;
3743 if (strEQ(d,"caller")) return -KEY_caller;
3746 if (strEQ(d,"connect")) return -KEY_connect;
3749 if (strEQ(d,"closedir")) return -KEY_closedir;
3750 if (strEQ(d,"continue")) return -KEY_continue;
3755 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3760 if (strEQ(d,"do")) return KEY_do;
3763 if (strEQ(d,"die")) return -KEY_die;
3766 if (strEQ(d,"dump")) return -KEY_dump;
3769 if (strEQ(d,"delete")) return KEY_delete;
3772 if (strEQ(d,"defined")) return KEY_defined;
3773 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3776 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3781 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3782 if (strEQ(d,"END")) return KEY_END;
3787 if (strEQ(d,"eq")) return -KEY_eq;
3790 if (strEQ(d,"eof")) return -KEY_eof;
3791 if (strEQ(d,"exp")) return -KEY_exp;
3794 if (strEQ(d,"else")) return KEY_else;
3795 if (strEQ(d,"exit")) return -KEY_exit;
3796 if (strEQ(d,"eval")) return KEY_eval;
3797 if (strEQ(d,"exec")) return -KEY_exec;
3798 if (strEQ(d,"each")) return KEY_each;
3801 if (strEQ(d,"elsif")) return KEY_elsif;
3804 if (strEQ(d,"exists")) return KEY_exists;
3805 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3808 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3809 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3812 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3815 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3816 if (strEQ(d,"endservent")) return -KEY_endservent;
3819 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3826 if (strEQ(d,"for")) return KEY_for;
3829 if (strEQ(d,"fork")) return -KEY_fork;
3832 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3833 if (strEQ(d,"flock")) return -KEY_flock;
3836 if (strEQ(d,"format")) return KEY_format;
3837 if (strEQ(d,"fileno")) return -KEY_fileno;
3840 if (strEQ(d,"foreach")) return KEY_foreach;
3843 if (strEQ(d,"formline")) return -KEY_formline;
3849 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3850 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3854 if (strnEQ(d,"get",3)) {
3859 if (strEQ(d,"ppid")) return -KEY_getppid;
3860 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3863 if (strEQ(d,"pwent")) return -KEY_getpwent;
3864 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3865 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3868 if (strEQ(d,"peername")) return -KEY_getpeername;
3869 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3870 if (strEQ(d,"priority")) return -KEY_getpriority;
3873 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3876 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3880 else if (*d == 'h') {
3881 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3882 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3883 if (strEQ(d,"hostent")) return -KEY_gethostent;
3885 else if (*d == 'n') {
3886 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3887 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3888 if (strEQ(d,"netent")) return -KEY_getnetent;
3890 else if (*d == 's') {
3891 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3892 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3893 if (strEQ(d,"servent")) return -KEY_getservent;
3894 if (strEQ(d,"sockname")) return -KEY_getsockname;
3895 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3897 else if (*d == 'g') {
3898 if (strEQ(d,"grent")) return -KEY_getgrent;
3899 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3900 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3902 else if (*d == 'l') {
3903 if (strEQ(d,"login")) return -KEY_getlogin;
3905 else if (strEQ(d,"c")) return -KEY_getc;
3910 if (strEQ(d,"gt")) return -KEY_gt;
3911 if (strEQ(d,"ge")) return -KEY_ge;
3914 if (strEQ(d,"grep")) return KEY_grep;
3915 if (strEQ(d,"goto")) return KEY_goto;
3916 if (strEQ(d,"glob")) return -KEY_glob;
3919 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3924 if (strEQ(d,"hex")) return -KEY_hex;
3929 if (strEQ(d,"if")) return KEY_if;
3932 if (strEQ(d,"int")) return -KEY_int;
3935 if (strEQ(d,"index")) return -KEY_index;
3936 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3941 if (strEQ(d,"join")) return -KEY_join;
3945 if (strEQ(d,"keys")) return KEY_keys;
3946 if (strEQ(d,"kill")) return -KEY_kill;
3951 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3952 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3958 if (strEQ(d,"lt")) return -KEY_lt;
3959 if (strEQ(d,"le")) return -KEY_le;
3960 if (strEQ(d,"lc")) return -KEY_lc;
3963 if (strEQ(d,"log")) return -KEY_log;
3966 if (strEQ(d,"last")) return KEY_last;
3967 if (strEQ(d,"link")) return -KEY_link;
3970 if (strEQ(d,"local")) return KEY_local;
3971 if (strEQ(d,"lstat")) return -KEY_lstat;
3974 if (strEQ(d,"length")) return -KEY_length;
3975 if (strEQ(d,"listen")) return -KEY_listen;
3978 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3981 if (strEQ(d,"localtime")) return -KEY_localtime;
3987 case 1: return KEY_m;
3989 if (strEQ(d,"my")) return KEY_my;
3992 if (strEQ(d,"map")) return KEY_map;
3995 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3998 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3999 if (strEQ(d,"msgget")) return -KEY_msgget;
4000 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4001 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4006 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4009 if (strEQ(d,"next")) return KEY_next;
4010 if (strEQ(d,"ne")) return -KEY_ne;
4011 if (strEQ(d,"not")) return -KEY_not;
4012 if (strEQ(d,"no")) return KEY_no;
4017 if (strEQ(d,"or")) return -KEY_or;
4020 if (strEQ(d,"ord")) return -KEY_ord;
4021 if (strEQ(d,"oct")) return -KEY_oct;
4024 if (strEQ(d,"open")) return -KEY_open;
4027 if (strEQ(d,"opendir")) return -KEY_opendir;
4034 if (strEQ(d,"pop")) return KEY_pop;
4035 if (strEQ(d,"pos")) return KEY_pos;
4038 if (strEQ(d,"push")) return KEY_push;
4039 if (strEQ(d,"pack")) return -KEY_pack;
4040 if (strEQ(d,"pipe")) return -KEY_pipe;
4043 if (strEQ(d,"print")) return KEY_print;
4046 if (strEQ(d,"printf")) return KEY_printf;
4049 if (strEQ(d,"package")) return KEY_package;
4052 if (strEQ(d,"prototype")) return KEY_prototype;
4057 if (strEQ(d,"q")) return KEY_q;
4058 if (strEQ(d,"qq")) return KEY_qq;
4059 if (strEQ(d,"qw")) return KEY_qw;
4060 if (strEQ(d,"qx")) return KEY_qx;
4062 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4065 if (strEQ(d,"RESTART")) return KEY_RESTART;
4070 if (strEQ(d,"ref")) return -KEY_ref;
4073 if (strEQ(d,"read")) return -KEY_read;
4074 if (strEQ(d,"rand")) return -KEY_rand;
4075 if (strEQ(d,"recv")) return -KEY_recv;
4076 if (strEQ(d,"redo")) return KEY_redo;
4079 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4080 if (strEQ(d,"reset")) return -KEY_reset;
4083 if (strEQ(d,"return")) return KEY_return;
4084 if (strEQ(d,"rename")) return -KEY_rename;
4085 if (strEQ(d,"rindex")) return -KEY_rindex;
4088 if (strEQ(d,"require")) return -KEY_require;
4089 if (strEQ(d,"reverse")) return -KEY_reverse;
4090 if (strEQ(d,"readdir")) return -KEY_readdir;
4093 if (strEQ(d,"readlink")) return -KEY_readlink;
4094 if (strEQ(d,"readline")) return -KEY_readline;
4095 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4098 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4104 case 0: return KEY_s;
4106 if (strEQ(d,"scalar")) return KEY_scalar;
4111 if (strEQ(d,"seek")) return -KEY_seek;
4112 if (strEQ(d,"send")) return -KEY_send;
4115 if (strEQ(d,"semop")) return -KEY_semop;
4118 if (strEQ(d,"select")) return -KEY_select;
4119 if (strEQ(d,"semctl")) return -KEY_semctl;
4120 if (strEQ(d,"semget")) return -KEY_semget;
4123 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4124 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4127 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4128 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4131 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4134 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4135 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4136 if (strEQ(d,"setservent")) return -KEY_setservent;
4139 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4140 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4147 if (strEQ(d,"shift")) return KEY_shift;
4150 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4151 if (strEQ(d,"shmget")) return -KEY_shmget;
4154 if (strEQ(d,"shmread")) return -KEY_shmread;
4157 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4158 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4163 if (strEQ(d,"sin")) return -KEY_sin;
4166 if (strEQ(d,"sleep")) return -KEY_sleep;
4169 if (strEQ(d,"sort")) return KEY_sort;
4170 if (strEQ(d,"socket")) return -KEY_socket;
4171 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4174 if (strEQ(d,"split")) return KEY_split;
4175 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4176 if (strEQ(d,"splice")) return KEY_splice;
4179 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4182 if (strEQ(d,"srand")) return -KEY_srand;
4185 if (strEQ(d,"stat")) return -KEY_stat;
4186 if (strEQ(d,"study")) return KEY_study;
4189 if (strEQ(d,"substr")) return -KEY_substr;
4190 if (strEQ(d,"sub")) return KEY_sub;
4195 if (strEQ(d,"system")) return -KEY_system;
4198 if (strEQ(d,"symlink")) return -KEY_symlink;
4199 if (strEQ(d,"syscall")) return -KEY_syscall;
4200 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4201 if (strEQ(d,"sysread")) return -KEY_sysread;
4202 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4205 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4214 if (strEQ(d,"tr")) return KEY_tr;
4217 if (strEQ(d,"tie")) return KEY_tie;
4220 if (strEQ(d,"tell")) return -KEY_tell;
4221 if (strEQ(d,"tied")) return KEY_tied;
4222 if (strEQ(d,"time")) return -KEY_time;
4225 if (strEQ(d,"times")) return -KEY_times;
4228 if (strEQ(d,"telldir")) return -KEY_telldir;
4231 if (strEQ(d,"truncate")) return -KEY_truncate;
4238 if (strEQ(d,"uc")) return -KEY_uc;
4241 if (strEQ(d,"use")) return KEY_use;
4244 if (strEQ(d,"undef")) return KEY_undef;
4245 if (strEQ(d,"until")) return KEY_until;
4246 if (strEQ(d,"untie")) return KEY_untie;
4247 if (strEQ(d,"utime")) return -KEY_utime;
4248 if (strEQ(d,"umask")) return -KEY_umask;
4251 if (strEQ(d,"unless")) return KEY_unless;
4252 if (strEQ(d,"unpack")) return -KEY_unpack;
4253 if (strEQ(d,"unlink")) return -KEY_unlink;
4256 if (strEQ(d,"unshift")) return KEY_unshift;
4257 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4262 if (strEQ(d,"values")) return -KEY_values;
4263 if (strEQ(d,"vec")) return -KEY_vec;
4268 if (strEQ(d,"warn")) return -KEY_warn;
4269 if (strEQ(d,"wait")) return -KEY_wait;
4272 if (strEQ(d,"while")) return KEY_while;
4273 if (strEQ(d,"write")) return -KEY_write;
4276 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4279 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4284 if (len == 1) return -KEY_x;
4285 if (strEQ(d,"xor")) return -KEY_xor;
4288 if (len == 1) return KEY_y;
4297 checkcomma(s,name,what)
4304 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4306 for (w = s+2; *w && level; w++) {
4313 for (; *w && isSPACE(*w); w++) ;
4314 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4315 warn("%s (...) interpreted as function",name);
4317 while (s < bufend && isSPACE(*s))
4321 while (s < bufend && isSPACE(*s))
4323 if (isIDFIRST(*s)) {
4327 while (s < bufend && isSPACE(*s))
4332 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4336 croak("No comma allowed after %s", what);
4342 scan_word(s, dest, destlen, allow_package, slp)
4349 register char *d = dest;
4350 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4353 croak(ident_too_long);
4356 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4361 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4374 scan_ident(s, send, dest, destlen, ck_uni)
4376 register char *send;
4386 if (lex_brackets == 0)
4391 e = d + destlen - 3; /* two-character token, ending NUL */
4393 while (isDIGIT(*s)) {
4395 croak(ident_too_long);
4402 croak(ident_too_long);
4405 else if (*s == '\'' && isIDFIRST(s[1])) {
4410 else if (*s == ':' && s[1] == ':') {
4421 if (lex_state != LEX_NORMAL)
4422 lex_state = LEX_INTERPENDMAYBE;
4425 if (*s == '$' && s[1] &&
4426 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4428 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4429 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4442 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4447 if (isSPACE(s[-1])) {
4450 if (ch != ' ' && ch != '\t') {
4456 if (isIDFIRST(*d)) {
4458 while (isALNUM(*s) || *s == ':')
4461 while (s < send && (*s == ' ' || *s == '\t')) s++;
4462 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4463 if (dowarn && keyword(dest, d - dest)) {
4464 char *brack = *s == '[' ? "[...]" : "{...}";
4465 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4466 funny, dest, brack, funny, dest, brack);
4468 lex_fakebrack = lex_brackets+1;
4470 lex_brackstack[lex_brackets++] = XOPERATOR;
4476 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4477 lex_state = LEX_INTERPEND;
4481 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4482 warn("Ambiguous use of %c{%s} resolved to %c%s",
4483 funny, dest, funny, dest);
4486 s = bracket; /* let the parser handle it */
4490 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4491 lex_state = LEX_INTERPEND;
4495 void pmflag(pmfl,ch)
4502 *pmfl |= PMf_GLOBAL;
4504 *pmfl |= PMf_CONTINUE;
4508 *pmfl |= PMf_MULTILINE;
4510 *pmfl |= PMf_SINGLELINE;
4512 *pmfl |= PMf_EXTENDED;
4522 s = scan_str(start);
4525 SvREFCNT_dec(lex_stuff);
4527 croak("Search pattern not terminated");
4530 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4531 if (multi_open == '?')
4532 pm->op_pmflags |= PMf_ONCE;
4533 while (*s && strchr("iogcmsx", *s))
4534 pmflag(&pm->op_pmflags,*s++);
4535 pm->op_pmpermflags = pm->op_pmflags;
4538 yylval.ival = OP_MATCH;
4551 yylval.ival = OP_NULL;
4553 s = scan_str(start);
4557 SvREFCNT_dec(lex_stuff);
4559 croak("Substitution pattern not terminated");
4562 if (s[-1] == multi_open)
4565 first_start = multi_start;
4569 SvREFCNT_dec(lex_stuff);
4572 SvREFCNT_dec(lex_repl);
4574 croak("Substitution replacement not terminated");
4576 multi_start = first_start; /* so whole substitution is taken together */
4578 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4579 while (*s && strchr("iogcmsex", *s)) {
4585 pmflag(&pm->op_pmflags,*s++);
4590 pm->op_pmflags |= PMf_EVAL;
4591 repl = newSVpv("",0);
4593 sv_catpv(repl, es ? "eval " : "do ");
4594 sv_catpvn(repl, "{ ", 2);
4595 sv_catsv(repl, lex_repl);
4596 sv_catpvn(repl, " };", 2);
4597 SvCOMPILED_on(repl);
4598 SvREFCNT_dec(lex_repl);
4602 pm->op_pmpermflags = pm->op_pmflags;
4604 yylval.ival = OP_SUBST;
4613 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4614 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4616 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4617 pm->op_pmflags |= PMf_SCANFIRST;
4618 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4619 pm->op_pmslen = SvCUR(pm->op_pmshort);
4621 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4622 if (pm->op_pmshort &&
4623 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4625 if (pm->op_pmflags & PMf_SCANFIRST) {
4626 SvREFCNT_dec(pm->op_pmshort);
4627 pm->op_pmshort = Nullsv;
4630 SvREFCNT_dec(pm->op_pmregexp->regmust);
4631 pm->op_pmregexp->regmust = Nullsv;
4635 /* promote the better string */
4636 if ((!pm->op_pmshort &&
4637 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4638 ((pm->op_pmflags & PMf_SCANFIRST) &&
4639 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4640 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4641 pm->op_pmshort = pm->op_pmregexp->regmust;
4642 pm->op_pmslen = SvCUR(pm->op_pmshort);
4643 pm->op_pmregexp->regmust = Nullsv;
4644 pm->op_pmflags |= PMf_SCANFIRST;
4660 yylval.ival = OP_NULL;
4662 s = scan_str(start);
4665 SvREFCNT_dec(lex_stuff);
4667 croak("Translation pattern not terminated");
4669 if (s[-1] == multi_open)
4675 SvREFCNT_dec(lex_stuff);
4678 SvREFCNT_dec(lex_repl);
4680 croak("Translation replacement not terminated");
4683 New(803,tbl,256,short);
4684 o = newPVOP(OP_TRANS, 0, (char*)tbl);
4686 complement = delete = squash = 0;
4687 while (*s == 'c' || *s == 'd' || *s == 's') {
4689 complement = OPpTRANS_COMPLEMENT;
4691 delete = OPpTRANS_DELETE;
4693 squash = OPpTRANS_SQUASH;
4696 o->op_private = delete|squash|complement;
4699 yylval.ival = OP_TRANS;
4709 I32 op_type = OP_SCALAR;
4716 int outer = (rsfp && !lex_inwhat);
4720 e = tokenbuf + sizeof tokenbuf - 1;
4723 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4724 if (*peek && strchr("`'\"",*peek)) {
4727 s = delimcpy(d, e, s, bufend, term, &len);
4738 deprecate("bare << to mean <<\"\"");
4739 for (; isALNUM(*s); s++) {
4744 if (d >= tokenbuf + sizeof tokenbuf - 1)
4745 croak("Delimiter for here document is too long");
4750 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4751 herewas = newSVpv(s,bufend-s);
4753 s--, herewas = newSVpv(s,d-s);
4754 s += SvCUR(herewas);
4756 tmpstr = NEWSV(87,80);
4757 sv_upgrade(tmpstr, SVt_PVIV);
4762 else if (term == '`') {
4763 op_type = OP_BACKTICK;
4764 SvIVX(tmpstr) = '\\';
4768 multi_start = curcop->cop_line;
4769 multi_open = multi_close = '<';
4773 while (s < bufend &&
4774 (*s != term || memNE(s,tokenbuf,len)) ) {
4779 curcop->cop_line = multi_start;
4780 missingterm(tokenbuf);
4782 sv_setpvn(tmpstr,d+1,s-d);
4784 sv_catpvn(herewas,s,bufend-s);
4785 sv_setsv(linestr,herewas);
4786 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4787 bufend = SvPVX(linestr) + SvCUR(linestr);
4790 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4791 while (s >= bufend) { /* multiple line string? */
4793 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4794 curcop->cop_line = multi_start;
4795 missingterm(tokenbuf);
4798 if (perldb && curstash != debstash) {
4799 SV *sv = NEWSV(88,0);
4801 sv_upgrade(sv, SVt_PVMG);
4802 sv_setsv(sv,linestr);
4803 av_store(GvAV(curcop->cop_filegv),
4804 (I32)curcop->cop_line,sv);
4806 bufend = SvPVX(linestr) + SvCUR(linestr);
4807 if (*s == term && memEQ(s,tokenbuf,len)) {
4810 sv_catsv(linestr,herewas);
4811 bufend = SvPVX(linestr) + SvCUR(linestr);
4815 sv_catsv(tmpstr,linestr);
4818 multi_end = curcop->cop_line;
4820 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4821 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4822 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4824 SvREFCNT_dec(herewas);
4826 yylval.ival = op_type;
4831 scan_inputsymbol(start)
4834 register char *s = start;
4840 e = tokenbuf + sizeof tokenbuf;
4841 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4842 if (len >= sizeof tokenbuf)
4843 croak("Excessively long <> operator");
4845 croak("Unterminated <> operator");
4847 if (*d == '$' && d[1]) d++;
4848 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4850 if (d - tokenbuf != len) {
4851 yylval.ival = OP_GLOB;
4853 s = scan_str(start);
4855 croak("Glob not terminated");
4861 (void)strcpy(d,"ARGV");
4864 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4865 OP *o = newOP(OP_PADSV, 0);
4867 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
4870 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4871 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4872 newUNOP(OP_RV2GV, 0,
4873 newUNOP(OP_RV2SV, 0,
4874 newGVOP(OP_GV, 0, gv))));
4876 yylval.ival = OP_NULL;
4879 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4880 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4881 yylval.ival = OP_NULL;
4894 register char *s = start;
4903 multi_start = curcop->cop_line;
4905 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4910 sv_upgrade(sv, SVt_PVIV);
4912 (void)SvPOK_only(sv); /* validate pointer */
4915 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4916 to = SvPVX(sv)+SvCUR(sv);
4917 if (multi_open == multi_close) {
4918 for (; s < bufend; s++,to++) {
4919 if (*s == '\n' && !rsfp)
4921 if (*s == '\\' && s+1 < bufend && term != '\\') {
4927 else if (*s == term)
4933 for (; s < bufend; s++,to++) {
4934 if (*s == '\n' && !rsfp)
4936 if (*s == '\\' && s+1 < bufend && term != '\\') {
4942 else if (*s == term && --brackets <= 0)
4944 else if (*s == multi_open)
4950 SvCUR_set(sv, to - SvPVX(sv));
4952 if (s < bufend) break; /* string ends on this line? */
4955 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4957 curcop->cop_line = multi_start;
4961 if (perldb && curstash != debstash) {
4962 SV *sv = NEWSV(88,0);
4964 sv_upgrade(sv, SVt_PVMG);
4965 sv_setsv(sv,linestr);
4966 av_store(GvAV(curcop->cop_filegv),
4967 (I32)curcop->cop_line, sv);
4969 bufend = SvPVX(linestr) + SvCUR(linestr);
4971 multi_end = curcop->cop_line;
4973 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4974 SvLEN_set(sv, SvCUR(sv) + 1);
4975 Renew(SvPVX(sv), SvLEN(sv), char);
4988 register char *s = start;
4996 static char number_too_long[] = "Number too long";
5000 croak("panic: scan_num");
5005 bool overflowed = FALSE;
5011 else if (s[1] == '.')
5027 yyerror("Illegal octal digit");
5029 case '0': case '1': case '2': case '3': case '4':
5030 case '5': case '6': case '7':
5033 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5034 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5040 if (!overflowed && (n >> shift) != u) {
5041 warn("Integer overflow in %s number",
5042 (shift == 4) ? "hex" : "octal");
5054 case '1': case '2': case '3': case '4': case '5':
5055 case '6': case '7': case '8': case '9': case '.':
5058 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5060 while (isDIGIT(*s) || *s == '_') {
5062 if (dowarn && lastub && s - lastub != 3)
5063 warn("Misplaced _ in number");
5068 croak(number_too_long);
5072 if (dowarn && lastub && s - lastub != 3)
5073 warn("Misplaced _ in number");
5074 if (*s == '.' && s[1] != '.') {
5077 for (; isDIGIT(*s) || *s == '_'; s++) {
5079 croak(number_too_long);
5084 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5087 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5088 if (*s == '+' || *s == '-')
5090 while (isDIGIT(*s)) {
5092 croak(number_too_long);
5098 SET_NUMERIC_STANDARD();
5099 value = atof(tokenbuf);
5101 if (!floatit && (double)tryiv == value)
5102 sv_setiv(sv, tryiv);
5104 sv_setnv(sv, value);
5108 yylval.opval = newSVOP(OP_CONST, 0, sv);
5120 SV *stuff = newSVpv("",0);
5121 bool needargs = FALSE;
5124 if (*s == '.' || *s == '}') {
5126 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5130 if (in_eval && !rsfp) {
5131 eol = strchr(s,'\n');
5136 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5138 for (t = s; t < eol; t++) {
5139 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5141 goto enough; /* ~~ must be first line in formline */
5143 if (*t == '@' || *t == '^')
5146 sv_catpvn(stuff, s, eol-s);
5150 s = filter_gets(linestr, rsfp, 0);
5151 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5152 bufend = bufptr + SvCUR(linestr);
5155 yyerror("Format not terminated");
5165 lex_state = LEX_NORMAL;
5166 nextval[nexttoke].ival = 0;
5170 lex_state = LEX_FORMLINE;
5171 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5173 nextval[nexttoke].ival = OP_FORMLINE;
5177 SvREFCNT_dec(stuff);
5189 cshlen = strlen(cshname);
5194 start_subparse(is_format, flags)
5199 I32 oldsavestack_ix = savestack_ix;
5200 CV* outsidecv = compcv;
5204 assert(SvTYPE(compcv) == SVt_PVCV);
5211 SAVESPTR(comppad_name);
5213 SAVEI32(comppad_name_fill);
5214 SAVEI32(min_intro_pending);
5215 SAVEI32(max_intro_pending);
5216 SAVEI32(pad_reset_pending);
5218 compcv = (CV*)NEWSV(1104,0);
5219 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5220 CvFLAGS(compcv) |= flags;
5223 comppad_name = newAV();
5224 comppad_name_fill = 0;
5226 av_store(comppad_name, 0, newSVpv("@_", 2));
5227 #endif /* USE_THREADS */
5228 min_intro_pending = 0;
5229 av_push(comppad, Nullsv);
5230 curpad = AvARRAY(comppad);
5232 subline = curcop->cop_line;
5234 comppadlist = newAV();
5235 AvREAL_off(comppadlist);
5236 av_store(comppadlist, 0, (SV*)comppad_name);
5237 av_store(comppadlist, 1, (SV*)comppad);
5239 CvPADLIST(compcv) = comppadlist;
5240 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5242 CvOWNER(compcv) = 0;
5243 New(666, CvMUTEXP(compcv), 1, pthread_mutex_t);
5244 MUTEX_INIT(CvMUTEXP(compcv));
5245 New(666, CvCONDP(compcv), 1, pthread_cond_t);
5246 COND_INIT(CvCONDP(compcv));
5247 #endif /* USE_THREADS */
5249 return oldsavestack_ix;
5270 char *context = NULL;
5274 if (!yychar || (yychar == ';' && !rsfp))
5276 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5277 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5278 while (isSPACE(*oldoldbufptr))
5280 context = oldoldbufptr;
5281 contlen = bufptr - oldoldbufptr;
5283 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5284 oldbufptr != bufptr) {
5285 while (isSPACE(*oldbufptr))
5287 context = oldbufptr;
5288 contlen = bufptr - oldbufptr;
5290 else if (yychar > 255)
5291 where = "next token ???";
5292 else if ((yychar & 127) == 127) {
5293 if (lex_state == LEX_NORMAL ||
5294 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5295 where = "at end of line";
5297 where = "within pattern";
5299 where = "within string";
5302 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5304 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5305 else if (isPRINT_LC(yychar))
5306 sv_catpvf(where_sv, "%c", yychar);
5308 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5309 where = SvPVX(where_sv);
5311 msg = sv_2mortal(newSVpv(s, 0));
5312 sv_catpvf(msg, " at %_ line %ld, ",
5313 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5315 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5317 sv_catpvf(msg, "%s\n", where);
5318 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5320 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5321 (int)multi_open,(int)multi_close,(long)multi_start);
5327 sv_catsv(GvSV(errgv), msg);
5329 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5330 if (++error_count >= 10)
5331 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
5333 in_my_stash = Nullhv;