3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "It all comes from here, the stench and the peril." --Frodo
17 static void check_uni _((void));
18 static void force_next _((I32 type));
19 static char *force_version _((char *start));
20 static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21 static SV *q _((SV *sv));
22 static char *scan_const _((char *start));
23 static char *scan_formline _((char *s));
24 static char *scan_heredoc _((char *s));
25 static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen,
27 static char *scan_inputsymbol _((char *start));
28 static char *scan_pat _((char *start));
29 static char *scan_str _((char *start));
30 static char *scan_subst _((char *start));
31 static char *scan_trans _((char *start));
32 static char *scan_word _((char *s, char *dest, STRLEN destlen,
33 int allow_package, STRLEN *slp));
34 static char *skipspace _((char *s));
35 static void checkcomma _((char *s, char *name, char *what));
36 static void force_ident _((char *s, int kind));
37 static void incline _((char *s));
38 static int intuit_method _((char *s, GV *gv));
39 static int intuit_more _((char *s));
40 static I32 lop _((I32 f, expectation x, char *s));
41 static void missingterm _((char *s));
42 static void no_op _((char *what, char *s));
43 static void set_csh _((void));
44 static I32 sublex_done _((void));
45 static I32 sublex_push _((void));
46 static I32 sublex_start _((void));
48 static int uni _((I32 f, char *s));
50 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
51 static void restore_rsfp _((void *f));
53 static char ident_too_long[] = "Identifier too long";
55 static char *linestart; /* beg. of most recently read line */
57 static char pending_ident; /* pending identifier lookup */
60 I32 super_state; /* lexer state to save */
61 I32 sub_inwhat; /* "lex_inwhat" to use */
62 OP *sub_op; /* "lex_op" to use */
65 /* The following are arranged oddly so that the guard on the switch statement
66 * can get by with a single comparison (if the compiler is smart enough).
70 #define LEX_INTERPNORMAL 9
71 #define LEX_INTERPCASEMOD 8
72 #define LEX_INTERPPUSH 7
73 #define LEX_INTERPSTART 6
74 #define LEX_INTERPEND 5
75 #define LEX_INTERPENDMAYBE 4
76 #define LEX_INTERPCONCAT 3
77 #define LEX_INTERPCONST 2
78 #define LEX_FORMLINE 1
79 #define LEX_KNOWNEXT 0
88 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
90 # include <unistd.h> /* Needed for execv() */
103 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
105 #define TOKEN(retval) return (bufptr = s,(int)retval)
106 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
107 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
108 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
109 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
110 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
111 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
112 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
113 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
114 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
115 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
116 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
117 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
118 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
119 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
120 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
121 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
122 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
123 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
124 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
126 /* This bit of chicanery makes a unary function followed by
127 * a parenthesis into a function with one argument, highest precedence.
129 #define UNI(f) return(yylval.ival = f, \
132 last_uni = oldbufptr, \
134 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
136 #define UNIBRACK(f) return(yylval.ival = f, \
138 last_uni = oldbufptr, \
139 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
141 /* grandfather return to old style */
142 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
148 if (*bufptr == '=') {
150 if (toketype == ANDAND)
151 yylval.ival = OP_ANDASSIGN;
152 else if (toketype == OROR)
153 yylval.ival = OP_ORASSIGN;
164 char *oldbp = bufptr;
165 bool is_first = (oldbufptr == linestart);
168 yywarn(form("%s found where operator expected", what));
170 warn("\t(Missing semicolon on previous line?)\n");
171 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
173 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
174 if (t < bufptr && isSPACE(*t))
175 warn("\t(Do you need to predeclare %.*s?)\n",
176 t - oldoldbufptr, oldoldbufptr);
180 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
191 char *nl = strrchr(s,'\n');
195 else if (multi_close < 32 || multi_close == 127) {
197 tmpbuf[1] = toCTRL(multi_close);
203 *tmpbuf = multi_close;
207 q = strchr(s,'"') ? '\'' : '"';
208 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
216 warn("Use of %s is deprecated", s);
222 deprecate("comma-less variable list");
233 SAVEI32(lex_brackets);
234 SAVEI32(lex_fakebrack);
235 SAVEI32(lex_casemods);
240 SAVEI16(curcop->cop_line);
244 SAVEPPTR(oldoldbufptr);
247 SAVEPPTR(lex_brackstack);
248 SAVEPPTR(lex_casestack);
249 SAVEDESTRUCTOR(restore_rsfp, rsfp);
251 lex_state = LEX_NORMAL;
256 New(899, lex_brackstack, 120, char);
257 New(899, lex_casestack, 12, char);
258 SAVEFREEPV(lex_brackstack);
259 SAVEFREEPV(lex_casestack);
261 *lex_casestack = '\0';
265 SvREFCNT_dec(lex_stuff);
268 SvREFCNT_dec(lex_repl);
273 if (SvREADONLY(linestr))
274 linestr = sv_2mortal(newSVsv(linestr));
275 s = SvPV(linestr, len);
276 if (len && s[len-1] != ';') {
277 if (!(SvFLAGS(linestr) & SVs_TEMP))
278 linestr = sv_2mortal(newSVsv(linestr));
279 sv_catpvn(linestr, "\n;", 2);
282 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
283 bufend = bufptr + SvCUR(linestr);
285 rs = newSVpv("\n", 1);
299 PerlIO *fp = (PerlIO*)f;
301 if (rsfp == PerlIO_stdin())
302 PerlIO_clearerr(rsfp);
303 else if (rsfp && (rsfp != fp))
320 while (*s == ' ' || *s == '\t') s++;
321 if (strnEQ(s, "line ", 5)) {
330 while (*s == ' ' || *s == '\t')
332 if (*s == '"' && (t = strchr(s+1, '"')))
336 return; /* false alarm */
337 for (t = s; !isSPACE(*t); t++) ;
342 curcop->cop_filegv = gv_fetchfile(s);
344 curcop->cop_filegv = gv_fetchfile(origfilename);
346 curcop->cop_line = atoi(n)-1;
353 if (lex_formbrack && lex_brackets <= lex_formbrack) {
354 while (s < bufend && (*s == ' ' || *s == '\t'))
360 while (s < bufend && isSPACE(*s))
362 if (s < bufend && *s == '#') {
363 while (s < bufend && *s != '\n')
368 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
370 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
371 if (minus_n || minus_p) {
372 sv_setpv(linestr,minus_p ?
373 ";}continue{print or die qq(-p destination: $!\\n)" :
375 sv_catpv(linestr,";}");
376 minus_n = minus_p = 0;
379 sv_setpv(linestr,";");
380 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
381 bufend = SvPVX(linestr) + SvCUR(linestr);
382 if (preprocess && !in_eval)
383 (void)my_pclose(rsfp);
384 else if ((PerlIO*)rsfp == PerlIO_stdin())
385 PerlIO_clearerr(rsfp);
387 (void)PerlIO_close(rsfp);
393 linestart = bufptr = s + prevlen;
394 bufend = s + SvCUR(linestr);
397 if (PERLDB_LINE && curstash != debstash) {
398 SV *sv = NEWSV(85,0);
400 sv_upgrade(sv, SVt_PVMG);
401 sv_setpvn(sv,bufptr,bufend-bufptr);
402 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
413 if (oldoldbufptr != last_uni)
415 while (isSPACE(*last_uni))
417 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
418 if ((t = strchr(s, '(')) && t < bufptr)
422 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
429 #define UNI(f) return uni(f,s)
439 last_uni = oldbufptr;
450 #endif /* CRIPPLED_CC */
452 #define LOP(f,x) return lop(f,x,s)
457 (I32 f, expectation x, char *s)
463 #endif /* CAN_PROTOTYPE */
469 last_lop = oldbufptr;
486 nexttype[nexttoke] = type;
488 if (lex_state != LEX_KNOWNEXT) {
489 lex_defer = lex_state;
491 lex_state = LEX_KNOWNEXT;
496 force_word(start,token,check_keyword,allow_pack,allow_tick)
497 register char *start;
506 start = skipspace(start);
509 (allow_pack && *s == ':') ||
510 (allow_tick && *s == '\'') )
512 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
513 if (check_keyword && keyword(tokenbuf, len))
515 if (token == METHOD) {
525 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
526 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
538 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
539 nextval[nexttoke].opval = op;
542 op->op_private = OPpCONST_ENTERED;
543 /* XXX see note in pp_entereval() for why we forgo typo
544 warnings if the symbol must be introduced in an eval.
546 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
547 kind == '$' ? SVt_PV :
548 kind == '@' ? SVt_PVAV :
549 kind == '%' ? SVt_PVHV :
560 OP *version = Nullop;
564 /* default VERSION number -- GBARR */
569 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
570 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
572 /* real VERSION number -- GBARR */
573 version = yylval.opval;
577 /* NOTE: The parser sees the package name and the VERSION swapped */
578 nextval[nexttoke].opval = version;
596 s = SvPV_force(sv, len);
600 while (s < send && *s != '\\')
607 if (s + 1 < send && (s[1] == '\\'))
608 s++; /* all that, just for this */
613 SvCUR_set(sv, d - SvPVX(sv));
621 register I32 op_type = yylval.ival;
623 if (op_type == OP_NULL) {
624 yylval.opval = lex_op;
628 if (op_type == OP_CONST || op_type == OP_READLINE) {
629 SV *sv = q(lex_stuff);
631 char *p = SvPV(sv, len);
632 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
638 sublex_info.super_state = lex_state;
639 sublex_info.sub_inwhat = op_type;
640 sublex_info.sub_op = lex_op;
641 lex_state = LEX_INTERPPUSH;
645 yylval.opval = lex_op;
658 lex_state = sublex_info.super_state;
660 SAVEI32(lex_brackets);
661 SAVEI32(lex_fakebrack);
662 SAVEI32(lex_casemods);
667 SAVEI16(curcop->cop_line);
670 SAVEPPTR(oldoldbufptr);
673 SAVEPPTR(lex_brackstack);
674 SAVEPPTR(lex_casestack);
679 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
680 bufend += SvCUR(linestr);
686 New(899, lex_brackstack, 120, char);
687 New(899, lex_casestack, 12, char);
688 SAVEFREEPV(lex_brackstack);
689 SAVEFREEPV(lex_casestack);
691 *lex_casestack = '\0';
693 lex_state = LEX_INTERPCONCAT;
694 curcop->cop_line = multi_start;
696 lex_inwhat = sublex_info.sub_inwhat;
697 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
698 lex_inpat = sublex_info.sub_op;
710 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
714 if (lex_casemods) { /* oops, we've got some unbalanced parens */
715 lex_state = LEX_INTERPCASEMOD;
719 /* Is there a right-hand side to take care of? */
720 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
723 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
724 bufend += SvCUR(linestr);
730 *lex_casestack = '\0';
732 if (SvCOMPILED(lex_repl)) {
733 lex_state = LEX_INTERPNORMAL;
737 lex_state = LEX_INTERPCONCAT;
743 bufend = SvPVX(linestr);
744 bufend += SvCUR(linestr);
754 register char *send = bufend;
755 SV *sv = NEWSV(93, send - start);
756 register char *s = start;
757 register char *d = SvPVX(sv);
758 bool dorange = FALSE;
762 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
763 : (lex_inwhat & OP_TRANS)
767 while (s < send || dorange) {
768 if (lex_inwhat == OP_TRANS) {
773 SvGROW(sv, SvLEN(sv) + 256);
777 for (i = (U8)*d; i <= max; i++)
782 else if (*s == '-' && s+1 < send && s != start) {
787 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
788 while (s < send && *s != ')')
791 else if (*s == '#' && lex_inpat &&
792 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
793 while (s+1 < send && *s != '\n')
796 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
798 else if (*s == '$') {
799 if (!lex_inpat) /* not a regexp, so $ must be var */
801 if (s + 1 < send && !strchr(")| \n\t", s[1]))
802 break; /* in regexp, $ might be tail anchor */
804 if (*s == '\\' && s+1 < send) {
806 if (*s && strchr(leave, *s)) {
811 if (lex_inwhat == OP_SUBST && !lex_inpat &&
812 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
815 warn("\\%c better written as $%c", *s, *s);
819 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
825 if (lex_inwhat == OP_TRANS) {
833 case '0': case '1': case '2': case '3':
834 case '4': case '5': case '6': case '7':
835 *d++ = scan_oct(s, 3, &len);
839 *d++ = scan_hex(++s, 2, &len);
875 SvCUR_set(sv, d - SvPVX(sv));
878 if (SvCUR(sv) + 5 < SvLEN(sv)) {
879 SvLEN_set(sv, SvCUR(sv) + 1);
880 Renew(SvPVX(sv), SvLEN(sv), char);
883 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
889 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
896 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
898 if (*s != '{' && *s != '[')
903 /* In a pattern, so maybe we have {n,m}. */
920 /* On the other hand, maybe we have a character class */
923 if (*s == ']' || *s == '^')
926 int weight = 2; /* let's weigh the evidence */
928 unsigned char un_char = 0, last_un_char;
929 char *send = strchr(s,']');
930 char tmpbuf[sizeof tokenbuf * 4];
932 if (!send) /* has to be an expression */
938 else if (isDIGIT(*s)) {
940 if (isDIGIT(s[1]) && s[2] == ']')
946 for (; s < send; s++) {
947 last_un_char = un_char;
948 un_char = (unsigned char)*s;
953 weight -= seen[un_char] * 10;
955 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
956 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
961 else if (*s == '$' && s[1] &&
962 strchr("[#!%*<>()-=",s[1])) {
963 if (/*{*/ strchr("])} =",s[2]))
972 if (strchr("wds]",s[1]))
974 else if (seen['\''] || seen['"'])
976 else if (strchr("rnftbxcav",s[1]))
978 else if (isDIGIT(s[1])) {
980 while (s[1] && isDIGIT(s[1]))
990 if (strchr("aA01! ",last_un_char))
992 if (strchr("zZ79~",s[1]))
996 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
997 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1002 if (keyword(tmpbuf, d - tmpbuf))
1005 if (un_char == last_un_char + 1)
1007 weight -= seen[un_char];
1012 if (weight >= 0) /* probably a character class */
1020 intuit_method(start,gv)
1024 char *s = start + (*start == '$');
1025 char tmpbuf[sizeof tokenbuf];
1035 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1036 if (*start == '$') {
1037 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1042 return *s == '(' ? FUNCMETH : METHOD;
1044 if (!keyword(tmpbuf, len)) {
1045 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1046 if (indirgv && GvCVu(indirgv))
1048 /* filehandle or package name makes it a method */
1049 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1051 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1052 return 0; /* no assumptions -- "=>" quotes bearword */
1053 nextval[nexttoke].opval =
1054 (OP*)newSVOP(OP_CONST, 0,
1056 nextval[nexttoke].opval->op_private =
1061 return *s == '(' ? FUNCMETH : METHOD;
1071 char *pdb = getenv("PERL5DB");
1075 return "BEGIN { require 'perl5db.pl' }";
1081 /* Encoded script support. filter_add() effectively inserts a
1082 * 'pre-processing' function into the current source input stream.
1083 * Note that the filter function only applies to the current source file
1084 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1086 * The datasv parameter (which may be NULL) can be used to pass
1087 * private data to this instance of the filter. The filter function
1088 * can recover the SV using the FILTER_DATA macro and use it to
1089 * store private buffers and state information.
1091 * The supplied datasv parameter is upgraded to a PVIO type
1092 * and the IoDIRP field is used to store the function pointer.
1093 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1094 * private use must be set using malloc'd pointers.
1096 static int filter_debug = 0;
1099 filter_add(funcp, datasv)
1103 if (!funcp){ /* temporary handy debugging hack to be deleted */
1104 filter_debug = atoi((char*)datasv);
1108 rsfp_filters = newAV();
1111 if (!SvUPGRADE(datasv, SVt_PVIO))
1112 die("Can't upgrade filter_add data to SVt_PVIO");
1113 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1115 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1116 av_unshift(rsfp_filters, 1);
1117 av_store(rsfp_filters, 0, datasv) ;
1122 /* Delete most recently added instance of this filter function. */
1128 warn("filter_del func %p", funcp);
1129 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1131 /* if filter is on top of stack (usual case) just pop it off */
1132 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1133 /* sv_free(av_pop(rsfp_filters)); */
1134 sv_free(av_shift(rsfp_filters));
1138 /* we need to search for the correct entry and clear it */
1139 die("filter_del can only delete in reverse order (currently)");
1143 /* Invoke the n'th filter function for the current rsfp. */
1145 filter_read(idx, buf_sv, maxlen)
1148 int maxlen; /* 0 = read one text line */
1155 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1156 /* Provide a default input filter to make life easy. */
1157 /* Note that we append to the line. This is handy. */
1159 warn("filter_read %d: from rsfp\n", idx);
1163 int old_len = SvCUR(buf_sv) ;
1165 /* ensure buf_sv is large enough */
1166 SvGROW(buf_sv, old_len + maxlen) ;
1167 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1168 if (PerlIO_error(rsfp))
1169 return -1; /* error */
1171 return 0 ; /* end of file */
1173 SvCUR_set(buf_sv, old_len + len) ;
1176 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1177 if (PerlIO_error(rsfp))
1178 return -1; /* error */
1180 return 0 ; /* end of file */
1183 return SvCUR(buf_sv);
1185 /* Skip this filter slot if filter has been deleted */
1186 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1188 warn("filter_read %d: skipped (filter deleted)\n", idx);
1189 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1191 /* Get function pointer hidden within datasv */
1192 funcp = (filter_t)IoDIRP(datasv);
1194 warn("filter_read %d: via function %p (%s)\n",
1195 idx, funcp, SvPV(datasv,na));
1196 /* Call function. The function is expected to */
1197 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1198 /* Return: <0:error, =0:eof, >0:not eof */
1199 return (*funcp)(idx, buf_sv, maxlen);
1203 filter_gets(sv,fp, append)
1205 register PerlIO *fp;
1211 SvCUR_set(sv, 0); /* start with empty line */
1212 if (FILTER_READ(0, sv, 0) > 0)
1213 return ( SvPVX(sv) ) ;
1218 return (sv_gets(sv, fp, append));
1224 static char* exp_name[] =
1225 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1228 EXT int yychar; /* last token */
1238 if (pending_ident) {
1239 char pit = pending_ident;
1243 if (strchr(tokenbuf,':'))
1244 croak(no_myglob,tokenbuf);
1245 yylval.opval = newOP(OP_PADANY, 0);
1246 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1250 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
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_LINE && 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);
1554 if (!in_eval && (minus_n || minus_p)) {
1555 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1556 sv_catpv(linestr,";}");
1557 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1558 bufend = SvPVX(linestr) + SvCUR(linestr);
1559 minus_n = minus_p = 0;
1562 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1563 sv_setpv(linestr,"");
1564 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1567 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1570 /* Incest with pod. */
1571 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1572 sv_setpv(linestr, "");
1573 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1574 bufend = SvPVX(linestr) + SvCUR(linestr);
1579 } while (doextract);
1580 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1581 if (PERLDB_LINE && curstash != debstash) {
1582 SV *sv = NEWSV(85,0);
1584 sv_upgrade(sv, SVt_PVMG);
1585 sv_setsv(sv,linestr);
1586 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1588 bufend = SvPVX(linestr) + SvCUR(linestr);
1589 if (curcop->cop_line == 1) {
1590 while (s < bufend && isSPACE(*s))
1592 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1596 if (*s == '#' && *(s+1) == '!')
1598 #ifdef ALTERNATE_SHEBANG
1600 static char as[] = ALTERNATE_SHEBANG;
1601 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1602 d = s + (sizeof(as) - 1);
1604 #endif /* ALTERNATE_SHEBANG */
1613 while (*d && !isSPACE(*d))
1617 #ifdef ARG_ZERO_IS_SCRIPT
1618 if (ipathend > ipath) {
1620 * HP-UX (at least) sets argv[0] to the script name,
1621 * which makes $^X incorrect. And Digital UNIX and Linux,
1622 * at least, set argv[0] to the basename of the Perl
1623 * interpreter. So, having found "#!", we'll set it right.
1625 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1626 assert(SvPOK(x) || SvGMAGICAL(x));
1627 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1628 sv_setpvn(x, ipath, ipathend - ipath);
1631 TAINT_NOT; /* $^X is always tainted, but that's OK */
1633 #endif /* ARG_ZERO_IS_SCRIPT */
1638 d = instr(s,"perl -");
1640 d = instr(s,"perl");
1641 #ifdef ALTERNATE_SHEBANG
1643 * If the ALTERNATE_SHEBANG on this system starts with a
1644 * character that can be part of a Perl expression, then if
1645 * we see it but not "perl", we're probably looking at the
1646 * start of Perl code, not a request to hand off to some
1647 * other interpreter. Similarly, if "perl" is there, but
1648 * not in the first 'word' of the line, we assume the line
1649 * contains the start of the Perl program.
1651 if (d && *s != '#') {
1653 while (*c && !strchr("; \t\r\n\f\v#", *c))
1656 d = Nullch; /* "perl" not in first word; ignore */
1658 *s = '#'; /* Don't try to parse shebang line */
1660 #endif /* ALTERNATE_SHEBANG */
1665 !instr(s,"indir") &&
1666 instr(origargv[0],"perl"))
1672 while (s < bufend && isSPACE(*s))
1675 Newz(899,newargv,origargc+3,char*);
1677 while (s < bufend && !isSPACE(*s))
1680 Copy(origargv+1, newargv+2, origargc+1, char*);
1685 execv(ipath, newargv);
1686 croak("Can't exec %s", ipath);
1689 U32 oldpdb = perldb;
1690 bool oldn = minus_n;
1691 bool oldp = minus_p;
1693 while (*d && !isSPACE(*d)) d++;
1694 while (*d == ' ' || *d == '\t') d++;
1698 if (*d == 'M' || *d == 'm') {
1700 while (*d && !isSPACE(*d)) d++;
1701 croak("Too late for \"-%.*s\" option",
1704 d = moreswitches(d);
1706 if (PERLDB_LINE && !oldpdb ||
1707 ( minus_n || minus_p ) && !(oldn || oldp) )
1708 /* if we have already added "LINE: while (<>) {",
1709 we must not do it again */
1711 sv_setpv(linestr, "");
1712 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1713 bufend = SvPVX(linestr) + SvCUR(linestr);
1716 (void)gv_fetchfile(origfilename);
1723 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1725 lex_state = LEX_FORMLINE;
1730 warn("Illegal character \\%03o (carriage return)", '\r');
1732 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1733 case ' ': case '\t': case '\f': case 013:
1738 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1740 while (s < d && *s != '\n')
1745 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1747 lex_state = LEX_FORMLINE;
1757 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1762 while (s < bufend && (*s == ' ' || *s == '\t'))
1765 if (strnEQ(s,"=>",2)) {
1767 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1768 (int)tmp, (int)tmp);
1769 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1770 OPERATOR('-'); /* unary minus */
1772 last_uni = oldbufptr;
1773 last_lop_op = OP_FTEREAD; /* good enough */
1775 case 'r': FTST(OP_FTEREAD);
1776 case 'w': FTST(OP_FTEWRITE);
1777 case 'x': FTST(OP_FTEEXEC);
1778 case 'o': FTST(OP_FTEOWNED);
1779 case 'R': FTST(OP_FTRREAD);
1780 case 'W': FTST(OP_FTRWRITE);
1781 case 'X': FTST(OP_FTREXEC);
1782 case 'O': FTST(OP_FTROWNED);
1783 case 'e': FTST(OP_FTIS);
1784 case 'z': FTST(OP_FTZERO);
1785 case 's': FTST(OP_FTSIZE);
1786 case 'f': FTST(OP_FTFILE);
1787 case 'd': FTST(OP_FTDIR);
1788 case 'l': FTST(OP_FTLINK);
1789 case 'p': FTST(OP_FTPIPE);
1790 case 'S': FTST(OP_FTSOCK);
1791 case 'u': FTST(OP_FTSUID);
1792 case 'g': FTST(OP_FTSGID);
1793 case 'k': FTST(OP_FTSVTX);
1794 case 'b': FTST(OP_FTBLK);
1795 case 'c': FTST(OP_FTCHR);
1796 case 't': FTST(OP_FTTTY);
1797 case 'T': FTST(OP_FTTEXT);
1798 case 'B': FTST(OP_FTBINARY);
1799 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1800 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1801 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1803 croak("Unrecognized file test: -%c", (int)tmp);
1810 if (expect == XOPERATOR)
1815 else if (*s == '>') {
1818 if (isIDFIRST(*s)) {
1819 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1827 if (expect == XOPERATOR)
1830 if (isSPACE(*s) || !isSPACE(*bufptr))
1832 OPERATOR('-'); /* unary minus */
1839 if (expect == XOPERATOR)
1844 if (expect == XOPERATOR)
1847 if (isSPACE(*s) || !isSPACE(*bufptr))
1853 if (expect != XOPERATOR) {
1854 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1856 force_ident(tokenbuf, '*');
1869 if (expect == XOPERATOR) {
1874 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1877 yyerror("Final % should be \\% or %name");
1880 pending_ident = '%';
1902 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1903 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1908 if (curcop->cop_line < copline)
1909 copline = curcop->cop_line;
1920 if (lex_brackets <= 0)
1921 yyerror("Unmatched right bracket");
1924 if (lex_state == LEX_INTERPNORMAL) {
1925 if (lex_brackets == 0) {
1926 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1927 lex_state = LEX_INTERPEND;
1934 if (lex_brackets > 100) {
1935 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1936 if (newlb != lex_brackstack) {
1938 lex_brackstack = newlb;
1943 if (lex_formbrack) {
1947 if (oldoldbufptr == last_lop)
1948 lex_brackstack[lex_brackets++] = XTERM;
1950 lex_brackstack[lex_brackets++] = XOPERATOR;
1951 OPERATOR(HASHBRACK);
1953 while (s < bufend && (*s == ' ' || *s == '\t'))
1957 if (d < bufend && *d == '-') {
1960 while (d < bufend && (*d == ' ' || *d == '\t'))
1963 if (d < bufend && isIDFIRST(*d)) {
1964 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1966 while (d < bufend && (*d == ' ' || *d == '\t'))
1969 char minus = (tokenbuf[0] == '-');
1971 (keyword(tokenbuf + 1, len) ||
1972 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1973 perl_get_cv(tokenbuf + 1, FALSE) ))
1974 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1975 tokenbuf + !minus, tokenbuf + !minus);
1976 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1983 lex_brackstack[lex_brackets++] = XSTATE;
1987 lex_brackstack[lex_brackets++] = XOPERATOR;
1992 if (oldoldbufptr == last_lop)
1993 lex_brackstack[lex_brackets++] = XTERM;
1995 lex_brackstack[lex_brackets++] = XOPERATOR;
1998 OPERATOR(HASHBRACK);
1999 /* This hack serves to disambiguate a pair of curlies
2000 * as being a block or an anon hash. Normally, expectation
2001 * determines that, but in cases where we're not in a
2002 * position to expect anything in particular (like inside
2003 * eval"") we have to resolve the ambiguity. This code
2004 * covers the case where the first term in the curlies is a
2005 * quoted string. Most other cases need to be explicitly
2006 * disambiguated by prepending a `+' before the opening
2007 * curly in order to force resolution as an anon hash.
2009 * XXX should probably propagate the outer expectation
2010 * into eval"" to rely less on this hack, but that could
2011 * potentially break current behavior of eval"".
2015 if (*s == '\'' || *s == '"' || *s == '`') {
2016 /* common case: get past first string, handling escapes */
2017 for (t++; t < bufend && *t != *s;)
2018 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2022 else if (*s == 'q') {
2025 || ((*t == 'q' || *t == 'x') && ++t < bufend
2026 && !isALNUM(*t)))) {
2028 char open, close, term;
2031 while (t < bufend && isSPACE(*t))
2035 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2039 for (t++; t < bufend; t++) {
2040 if (*t == '\\' && t+1 < bufend && open != '\\')
2042 else if (*t == open)
2046 for (t++; t < bufend; t++) {
2047 if (*t == '\\' && t+1 < bufend)
2049 else if (*t == close && --brackets <= 0)
2051 else if (*t == open)
2057 else if (isALPHA(*s)) {
2058 for (t++; t < bufend && isALNUM(*t); t++) ;
2060 while (t < bufend && isSPACE(*t))
2062 /* if comma follows first term, call it an anon hash */
2063 /* XXX it could be a comma expression with loop modifiers */
2064 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2065 || (*t == '=' && t[1] == '>')))
2066 OPERATOR(HASHBRACK);
2070 lex_brackstack[lex_brackets-1] = XSTATE;
2076 yylval.ival = curcop->cop_line;
2077 if (isSPACE(*s) || *s == '#')
2078 copline = NOLINE; /* invalidate current command line number */
2083 if (lex_brackets <= 0)
2084 yyerror("Unmatched right bracket");
2086 expect = (expectation)lex_brackstack[--lex_brackets];
2087 if (lex_brackets < lex_formbrack)
2089 if (lex_state == LEX_INTERPNORMAL) {
2090 if (lex_brackets == 0) {
2091 if (lex_fakebrack) {
2092 lex_state = LEX_INTERPEND;
2094 return yylex(); /* ignore fake brackets */
2096 if (*s == '-' && s[1] == '>')
2097 lex_state = LEX_INTERPENDMAYBE;
2098 else if (*s != '[' && *s != '{')
2099 lex_state = LEX_INTERPEND;
2102 if (lex_brackets < lex_fakebrack) {
2105 return yylex(); /* ignore fake brackets */
2115 if (expect == XOPERATOR) {
2116 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2124 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2127 force_ident(tokenbuf, '&');
2131 yylval.ival = (OPpENTERSUB_AMPER<<8);
2150 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2151 warn("Reversed %c= operator",(int)tmp);
2153 if (expect == XSTATE && isALPHA(tmp) &&
2154 (s == linestart+1 || s[-2] == '\n') )
2156 if (in_eval && !rsfp) {
2161 if (strnEQ(s,"=cut",4)) {
2178 if (lex_brackets < lex_formbrack) {
2180 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2181 if (*t == '\n' || *t == '#') {
2199 if (expect != XOPERATOR) {
2200 if (s[1] != '<' && !strchr(s,'>'))
2203 s = scan_heredoc(s);
2205 s = scan_inputsymbol(s);
2206 TERM(sublex_start());
2211 SHop(OP_LEFT_SHIFT);
2225 SHop(OP_RIGHT_SHIFT);
2234 if (expect == XOPERATOR) {
2235 if (lex_formbrack && lex_brackets == lex_formbrack) {
2238 return ','; /* grandfather non-comma-format format */
2242 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2243 if (expect == XOPERATOR)
2244 no_op("Array length", bufptr);
2246 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2251 pending_ident = '#';
2255 if (expect == XOPERATOR)
2256 no_op("Scalar", bufptr);
2258 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2261 yyerror("Final $ should be \\$ or $name");
2265 /* This kludge not intended to be bulletproof. */
2266 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2267 yylval.opval = newSVOP(OP_CONST, 0,
2268 newSViv((IV)compiling.cop_arybase));
2269 yylval.opval->op_private = OPpCONST_ARYBASE;
2274 if (lex_state == LEX_NORMAL)
2277 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2283 isSPACE(*t) || isALNUM(*t) || *t == '$';
2286 bufptr = skipspace(bufptr);
2287 while (t < bufend && *t != ']')
2289 warn("Multidimensional syntax %.*s not supported",
2290 (t - bufptr) + 1, bufptr);
2294 else if (*s == '{') {
2296 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2297 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2299 char tmpbuf[sizeof tokenbuf];
2301 for (t++; isSPACE(*t); t++) ;
2302 if (isIDFIRST(*t)) {
2303 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2304 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2305 warn("You need to quote \"%s\"", tmpbuf);
2312 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2313 bool islop = (last_lop == oldoldbufptr);
2314 if (!islop || last_lop_op == OP_GREPSTART)
2316 else if (strchr("$@\"'`q", *s))
2317 expect = XTERM; /* e.g. print $fh "foo" */
2318 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2319 expect = XTERM; /* e.g. print $fh &sub */
2320 else if (isIDFIRST(*s)) {
2321 char tmpbuf[sizeof tokenbuf];
2322 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2323 if (tmp = keyword(tmpbuf, len)) {
2324 /* binary operators exclude handle interpretations */
2336 expect = XTERM; /* e.g. print $fh length() */
2341 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2342 if (gv && GvCVu(gv))
2343 expect = XTERM; /* e.g. print $fh subr() */
2346 else if (isDIGIT(*s))
2347 expect = XTERM; /* e.g. print $fh 3 */
2348 else if (*s == '.' && isDIGIT(s[1]))
2349 expect = XTERM; /* e.g. print $fh .3 */
2350 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2351 expect = XTERM; /* e.g. print $fh -1 */
2352 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2353 expect = XTERM; /* print $fh <<"EOF" */
2355 pending_ident = '$';
2359 if (expect == XOPERATOR)
2362 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2365 yyerror("Final @ should be \\@ or @name");
2368 if (lex_state == LEX_NORMAL)
2370 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2374 /* Warn about @ where they meant $. */
2376 if (*s == '[' || *s == '{') {
2378 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2380 if (*t == '}' || *t == ']') {
2382 bufptr = skipspace(bufptr);
2383 warn("Scalar value %.*s better written as $%.*s",
2384 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2389 pending_ident = '@';
2392 case '/': /* may either be division or pattern */
2393 case '?': /* may either be conditional or pattern */
2394 if (expect != XOPERATOR) {
2397 TERM(sublex_start());
2405 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2406 (s == linestart || s[-1] == '\n') ) {
2411 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2417 yylval.ival = OPf_SPECIAL;
2423 if (expect != XOPERATOR)
2428 case '0': case '1': case '2': case '3': case '4':
2429 case '5': case '6': case '7': case '8': case '9':
2431 if (expect == XOPERATOR)
2437 if (expect == XOPERATOR) {
2438 if (lex_formbrack && lex_brackets == lex_formbrack) {
2441 return ','; /* grandfather non-comma-format format */
2447 missingterm((char*)0);
2448 yylval.ival = OP_CONST;
2449 TERM(sublex_start());
2453 if (expect == XOPERATOR) {
2454 if (lex_formbrack && lex_brackets == lex_formbrack) {
2457 return ','; /* grandfather non-comma-format format */
2463 missingterm((char*)0);
2464 yylval.ival = OP_CONST;
2465 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2466 if (*d == '$' || *d == '@' || *d == '\\') {
2467 yylval.ival = OP_STRINGIFY;
2471 TERM(sublex_start());
2475 if (expect == XOPERATOR)
2476 no_op("Backticks",s);
2478 missingterm((char*)0);
2479 yylval.ival = OP_BACKTICK;
2481 TERM(sublex_start());
2485 if (dowarn && lex_inwhat && isDIGIT(*s))
2486 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2487 if (expect == XOPERATOR)
2488 no_op("Backslash",s);
2492 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2528 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2530 /* Some keywords can be followed by any delimiter, including ':' */
2531 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2532 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2533 (tokenbuf[0] == 'q' &&
2534 strchr("qwx", tokenbuf[1]))));
2536 /* x::* is just a word, unless x is "CORE" */
2537 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2541 while (d < bufend && isSPACE(*d))
2542 d++; /* no comments skipped here, or s### is misparsed */
2544 /* Is this a label? */
2545 if (!tmp && expect == XSTATE
2546 && d < bufend && *d == ':' && *(d + 1) != ':') {
2548 yylval.pval = savepv(tokenbuf);
2553 /* Check for keywords */
2554 tmp = keyword(tokenbuf, len);
2556 /* Is this a word before a => operator? */
2557 if (strnEQ(d,"=>",2)) {
2559 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2560 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2561 tokenbuf, tokenbuf);
2562 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2563 yylval.opval->op_private = OPpCONST_BARE;
2567 if (tmp < 0) { /* second-class keyword? */
2569 if (expect != XOPERATOR &&
2570 (*s != ':' || s[1] != ':') &&
2571 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2583 default: /* not a keyword */
2587 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2589 /* Get the rest if it looks like a package qualifier */
2591 if (*s == '\'' || *s == ':' && s[1] == ':') {
2592 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2595 croak("Bad name after %s::", tokenbuf);
2598 if (expect == XOPERATOR) {
2599 if (bufptr == linestart) {
2605 no_op("Bareword",s);
2608 /* Look for a subroutine with this name in current package. */
2610 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2612 /* Presume this is going to be a bareword of some sort. */
2615 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2616 yylval.opval->op_private = OPpCONST_BARE;
2618 /* See if it's the indirect object for a list operator. */
2621 oldoldbufptr < bufptr &&
2622 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2623 /* NO SKIPSPACE BEFORE HERE! */
2625 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2627 bool immediate_paren = *s == '(';
2629 /* (Now we can afford to cross potential line boundary.) */
2632 /* Two barewords in a row may indicate method call. */
2634 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2637 /* If not a declared subroutine, it's an indirect object. */
2638 /* (But it's an indir obj regardless for sort.) */
2640 if ((last_lop_op == OP_SORT ||
2641 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2642 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2643 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2648 /* If followed by a paren, it's certainly a subroutine. */
2654 if (gv && GvCVu(gv)) {
2655 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2656 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2661 nextval[nexttoke].opval = yylval.opval;
2668 /* If followed by var or block, call it a method (unless sub) */
2670 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2671 last_lop = oldbufptr;
2672 last_lop_op = OP_METHOD;
2676 /* If followed by a bareword, see if it looks like indir obj. */
2678 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2681 /* Not a method, so call it a subroutine (if defined) */
2683 if (gv && GvCVu(gv)) {
2685 if (lastchar == '-')
2686 warn("Ambiguous use of -%s resolved as -&%s()",
2687 tokenbuf, tokenbuf);
2688 last_lop = oldbufptr;
2689 last_lop_op = OP_ENTERSUB;
2690 /* Check for a constant sub */
2692 if ((sv = cv_const_sv(cv))) {
2694 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2695 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2696 yylval.opval->op_private = 0;
2700 /* Resolve to GV now. */
2701 op_free(yylval.opval);
2702 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2703 /* Is there a prototype? */
2706 char *proto = SvPV((SV*)cv, len);
2709 if (strEQ(proto, "$"))
2711 if (*proto == '&' && *s == '{') {
2712 sv_setpv(subname,"__ANON__");
2716 nextval[nexttoke].opval = yylval.opval;
2722 if (hints & HINT_STRICT_SUBS &&
2725 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2726 last_lop_op != OP_ACCEPT &&
2727 last_lop_op != OP_PIPE_OP &&
2728 last_lop_op != OP_SOCKPAIR)
2731 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2736 /* Call it a bare word */
2740 if (lastchar != '-') {
2741 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2743 warn(warn_reserved, tokenbuf);
2746 if (lastchar && strchr("*%&", lastchar)) {
2747 warn("Operator or semicolon missing before %c%s",
2748 lastchar, tokenbuf);
2749 warn("Ambiguous use of %c resolved as operator %c",
2750 lastchar, lastchar);
2756 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2757 newSVsv(GvSV(curcop->cop_filegv)));
2761 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2762 newSVpvf("%ld", (long)curcop->cop_line));
2765 case KEY___PACKAGE__:
2766 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2768 ? newSVsv(curstname)
2777 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2778 char *pname = "main";
2779 if (tokenbuf[2] == 'D')
2780 pname = HvNAME(curstash ? curstash : defstash);
2781 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2784 GvIOp(gv) = newIO();
2785 IoIFP(GvIOp(gv)) = rsfp;
2786 #if defined(HAS_FCNTL) && defined(F_SETFD)
2788 int fd = PerlIO_fileno(rsfp);
2789 fcntl(fd,F_SETFD,fd >= 3);
2792 /* Mark this internal pseudo-handle as clean */
2793 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2795 IoTYPE(GvIOp(gv)) = '|';
2796 else if ((PerlIO*)rsfp == PerlIO_stdin())
2797 IoTYPE(GvIOp(gv)) = '-';
2799 IoTYPE(GvIOp(gv)) = '<';
2809 if (expect == XSTATE) {
2816 if (*s == ':' && s[1] == ':') {
2819 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2820 tmp = keyword(tokenbuf, len);
2834 LOP(OP_ACCEPT,XTERM);
2840 LOP(OP_ATAN2,XTERM);
2849 LOP(OP_BLESS,XTERM);
2858 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2878 LOP(OP_CRYPT,XTERM);
2882 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2883 if (*d != '0' && isDIGIT(*d))
2884 yywarn("chmod: mode argument is missing initial 0");
2886 LOP(OP_CHMOD,XTERM);
2889 LOP(OP_CHOWN,XTERM);
2892 LOP(OP_CONNECT,XTERM);
2908 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2912 hints |= HINT_BLOCK_SCOPE;
2922 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2923 LOP(OP_DBMOPEN,XTERM);
2929 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2936 yylval.ival = curcop->cop_line;
2950 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2951 UNIBRACK(OP_ENTEREVAL);
2966 case KEY_endhostent:
2972 case KEY_endservent:
2975 case KEY_endprotoent:
2986 yylval.ival = curcop->cop_line;
2988 if (isIDFIRST(*s)) {
2990 if ((bufend - p) >= 3 &&
2991 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2995 croak("Missing $ on loop variable");
3000 LOP(OP_FORMLINE,XTERM);
3006 LOP(OP_FCNTL,XTERM);
3012 LOP(OP_FLOCK,XTERM);
3021 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3024 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3039 case KEY_getpriority:
3040 LOP(OP_GETPRIORITY,XTERM);
3042 case KEY_getprotobyname:
3045 case KEY_getprotobynumber:
3046 LOP(OP_GPBYNUMBER,XTERM);
3048 case KEY_getprotoent:
3060 case KEY_getpeername:
3061 UNI(OP_GETPEERNAME);
3063 case KEY_gethostbyname:
3066 case KEY_gethostbyaddr:
3067 LOP(OP_GHBYADDR,XTERM);
3069 case KEY_gethostent:
3072 case KEY_getnetbyname:
3075 case KEY_getnetbyaddr:
3076 LOP(OP_GNBYADDR,XTERM);
3081 case KEY_getservbyname:
3082 LOP(OP_GSBYNAME,XTERM);
3084 case KEY_getservbyport:
3085 LOP(OP_GSBYPORT,XTERM);
3087 case KEY_getservent:
3090 case KEY_getsockname:
3091 UNI(OP_GETSOCKNAME);
3093 case KEY_getsockopt:
3094 LOP(OP_GSOCKOPT,XTERM);
3116 yylval.ival = curcop->cop_line;
3120 LOP(OP_INDEX,XTERM);
3126 LOP(OP_IOCTL,XTERM);
3138 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3169 LOP(OP_LISTEN,XTERM);
3176 TERM(sublex_start());
3179 LOP(OP_MAPSTART,XREF);
3182 LOP(OP_MKDIR,XTERM);
3185 LOP(OP_MSGCTL,XTERM);
3188 LOP(OP_MSGGET,XTERM);
3191 LOP(OP_MSGRCV,XTERM);
3194 LOP(OP_MSGSND,XTERM);
3201 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3208 if (expect != XSTATE)
3209 yyerror("\"no\" not allowed in expression");
3210 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3211 s = force_version(s);
3220 if (isIDFIRST(*s)) {
3222 for (d = s; isALNUM(*d); d++) ;
3224 if (strchr("|&*+-=!?:.", *t))
3225 warn("Precedence problem: open %.*s should be open(%.*s)",
3231 yylval.ival = OP_OR;
3241 LOP(OP_OPEN_DIR,XTERM);
3244 checkcomma(s,tokenbuf,"filehandle");
3248 checkcomma(s,tokenbuf,"filehandle");
3267 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3271 LOP(OP_PIPE_OP,XTERM);
3276 missingterm((char*)0);
3277 yylval.ival = OP_CONST;
3278 TERM(sublex_start());
3286 missingterm((char*)0);
3287 if (dowarn && SvLEN(lex_stuff)) {
3288 d = SvPV_force(lex_stuff, len);
3289 for (; len; --len, ++d) {
3291 warn("Possible attempt to separate words with commas");
3295 warn("Possible attempt to put comments in qw() list");
3301 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3305 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3308 yylval.ival = OP_SPLIT;
3312 last_lop = oldbufptr;
3313 last_lop_op = OP_SPLIT;
3319 missingterm((char*)0);
3320 yylval.ival = OP_STRINGIFY;
3321 if (SvIVX(lex_stuff) == '\'')
3322 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3323 TERM(sublex_start());
3328 missingterm((char*)0);
3329 yylval.ival = OP_BACKTICK;
3331 TERM(sublex_start());
3338 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3339 if (isIDFIRST(*tokenbuf))
3340 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3342 yyerror("<> should be quotes");
3349 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3353 LOP(OP_RENAME,XTERM);
3362 LOP(OP_RINDEX,XTERM);
3385 LOP(OP_REVERSE,XTERM);
3396 TERM(sublex_start());
3398 TOKEN(1); /* force error */
3407 LOP(OP_SELECT,XTERM);
3413 LOP(OP_SEMCTL,XTERM);
3416 LOP(OP_SEMGET,XTERM);
3419 LOP(OP_SEMOP,XTERM);
3425 LOP(OP_SETPGRP,XTERM);
3427 case KEY_setpriority:
3428 LOP(OP_SETPRIORITY,XTERM);
3430 case KEY_sethostent:
3436 case KEY_setservent:
3439 case KEY_setprotoent:
3449 LOP(OP_SEEKDIR,XTERM);
3451 case KEY_setsockopt:
3452 LOP(OP_SSOCKOPT,XTERM);
3458 LOP(OP_SHMCTL,XTERM);
3461 LOP(OP_SHMGET,XTERM);
3464 LOP(OP_SHMREAD,XTERM);
3467 LOP(OP_SHMWRITE,XTERM);
3470 LOP(OP_SHUTDOWN,XTERM);
3479 LOP(OP_SOCKET,XTERM);
3481 case KEY_socketpair:
3482 LOP(OP_SOCKPAIR,XTERM);
3485 checkcomma(s,tokenbuf,"subroutine name");
3487 if (*s == ';' || *s == ')') /* probably a close */
3488 croak("sort is now a reserved word");
3490 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3494 LOP(OP_SPLIT,XTERM);
3497 LOP(OP_SPRINTF,XTERM);
3500 LOP(OP_SPLICE,XTERM);
3516 LOP(OP_SUBSTR,XTERM);
3523 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3524 char tmpbuf[sizeof tokenbuf];
3526 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3527 if (strchr(tmpbuf, ':'))
3528 sv_setpv(subname, tmpbuf);
3530 sv_setsv(subname,curstname);
3531 sv_catpvn(subname,"::",2);
3532 sv_catpvn(subname,tmpbuf,len);
3534 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3538 expect = XTERMBLOCK;
3539 sv_setpv(subname,"?");
3542 if (tmp == KEY_format) {
3545 lex_formbrack = lex_brackets + 1;
3549 /* Look for a prototype */
3556 SvREFCNT_dec(lex_stuff);
3558 croak("Prototype not terminated");
3561 d = SvPVX(lex_stuff);
3563 for (p = d; *p; ++p) {
3568 SvCUR(lex_stuff) = tmp;
3571 nextval[1] = nextval[0];
3572 nexttype[1] = nexttype[0];
3573 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3574 nexttype[0] = THING;
3575 if (nexttoke == 1) {
3576 lex_defer = lex_state;
3577 lex_expect = expect;
3578 lex_state = LEX_KNOWNEXT;
3583 if (*SvPV(subname,na) == '?') {
3584 sv_setpv(subname,"__ANON__");
3591 LOP(OP_SYSTEM,XREF);
3594 LOP(OP_SYMLINK,XTERM);
3597 LOP(OP_SYSCALL,XTERM);
3600 LOP(OP_SYSOPEN,XTERM);
3603 LOP(OP_SYSSEEK,XTERM);
3606 LOP(OP_SYSREAD,XTERM);
3609 LOP(OP_SYSWRITE,XTERM);
3613 TERM(sublex_start());
3634 LOP(OP_TRUNCATE,XTERM);
3646 yylval.ival = curcop->cop_line;
3650 yylval.ival = curcop->cop_line;
3654 LOP(OP_UNLINK,XTERM);
3660 LOP(OP_UNPACK,XTERM);
3663 LOP(OP_UTIME,XTERM);
3667 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3668 if (*d != '0' && isDIGIT(*d))
3669 yywarn("umask: argument is missing initial 0");
3674 LOP(OP_UNSHIFT,XTERM);
3677 if (expect != XSTATE)
3678 yyerror("\"use\" not allowed in expression");
3681 s = force_version(s);
3682 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3683 nextval[nexttoke].opval = Nullop;
3688 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3689 s = force_version(s);
3702 yylval.ival = curcop->cop_line;
3706 hints |= HINT_BLOCK_SCOPE;
3713 LOP(OP_WAITPID,XTERM);
3719 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3723 if (expect == XOPERATOR)
3729 yylval.ival = OP_XOR;
3734 TERM(sublex_start());
3747 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3748 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3749 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3750 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3751 if (strEQ(d,"__END__")) return KEY___END__;
3755 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3760 if (strEQ(d,"and")) return -KEY_and;
3761 if (strEQ(d,"abs")) return -KEY_abs;
3764 if (strEQ(d,"alarm")) return -KEY_alarm;
3765 if (strEQ(d,"atan2")) return -KEY_atan2;
3768 if (strEQ(d,"accept")) return -KEY_accept;
3773 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3776 if (strEQ(d,"bless")) return -KEY_bless;
3777 if (strEQ(d,"bind")) return -KEY_bind;
3778 if (strEQ(d,"binmode")) return -KEY_binmode;
3781 if (strEQ(d,"CORE")) return -KEY_CORE;
3786 if (strEQ(d,"cmp")) return -KEY_cmp;
3787 if (strEQ(d,"chr")) return -KEY_chr;
3788 if (strEQ(d,"cos")) return -KEY_cos;
3791 if (strEQ(d,"chop")) return KEY_chop;
3794 if (strEQ(d,"close")) return -KEY_close;
3795 if (strEQ(d,"chdir")) return -KEY_chdir;
3796 if (strEQ(d,"chomp")) return KEY_chomp;
3797 if (strEQ(d,"chmod")) return -KEY_chmod;
3798 if (strEQ(d,"chown")) return -KEY_chown;
3799 if (strEQ(d,"crypt")) return -KEY_crypt;
3802 if (strEQ(d,"chroot")) return -KEY_chroot;
3803 if (strEQ(d,"caller")) return -KEY_caller;
3806 if (strEQ(d,"connect")) return -KEY_connect;
3809 if (strEQ(d,"closedir")) return -KEY_closedir;
3810 if (strEQ(d,"continue")) return -KEY_continue;
3815 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3820 if (strEQ(d,"do")) return KEY_do;
3823 if (strEQ(d,"die")) return -KEY_die;
3826 if (strEQ(d,"dump")) return -KEY_dump;
3829 if (strEQ(d,"delete")) return KEY_delete;
3832 if (strEQ(d,"defined")) return KEY_defined;
3833 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3836 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3841 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3842 if (strEQ(d,"END")) return KEY_END;
3847 if (strEQ(d,"eq")) return -KEY_eq;
3850 if (strEQ(d,"eof")) return -KEY_eof;
3851 if (strEQ(d,"exp")) return -KEY_exp;
3854 if (strEQ(d,"else")) return KEY_else;
3855 if (strEQ(d,"exit")) return -KEY_exit;
3856 if (strEQ(d,"eval")) return KEY_eval;
3857 if (strEQ(d,"exec")) return -KEY_exec;
3858 if (strEQ(d,"each")) return KEY_each;
3861 if (strEQ(d,"elsif")) return KEY_elsif;
3864 if (strEQ(d,"exists")) return KEY_exists;
3865 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3868 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3869 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3872 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3875 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3876 if (strEQ(d,"endservent")) return -KEY_endservent;
3879 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3886 if (strEQ(d,"for")) return KEY_for;
3889 if (strEQ(d,"fork")) return -KEY_fork;
3892 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3893 if (strEQ(d,"flock")) return -KEY_flock;
3896 if (strEQ(d,"format")) return KEY_format;
3897 if (strEQ(d,"fileno")) return -KEY_fileno;
3900 if (strEQ(d,"foreach")) return KEY_foreach;
3903 if (strEQ(d,"formline")) return -KEY_formline;
3909 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3910 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3914 if (strnEQ(d,"get",3)) {
3919 if (strEQ(d,"ppid")) return -KEY_getppid;
3920 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3923 if (strEQ(d,"pwent")) return -KEY_getpwent;
3924 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3925 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3928 if (strEQ(d,"peername")) return -KEY_getpeername;
3929 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3930 if (strEQ(d,"priority")) return -KEY_getpriority;
3933 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3936 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3940 else if (*d == 'h') {
3941 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3942 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3943 if (strEQ(d,"hostent")) return -KEY_gethostent;
3945 else if (*d == 'n') {
3946 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3947 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3948 if (strEQ(d,"netent")) return -KEY_getnetent;
3950 else if (*d == 's') {
3951 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3952 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3953 if (strEQ(d,"servent")) return -KEY_getservent;
3954 if (strEQ(d,"sockname")) return -KEY_getsockname;
3955 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3957 else if (*d == 'g') {
3958 if (strEQ(d,"grent")) return -KEY_getgrent;
3959 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3960 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3962 else if (*d == 'l') {
3963 if (strEQ(d,"login")) return -KEY_getlogin;
3965 else if (strEQ(d,"c")) return -KEY_getc;
3970 if (strEQ(d,"gt")) return -KEY_gt;
3971 if (strEQ(d,"ge")) return -KEY_ge;
3974 if (strEQ(d,"grep")) return KEY_grep;
3975 if (strEQ(d,"goto")) return KEY_goto;
3976 if (strEQ(d,"glob")) return -KEY_glob;
3979 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3984 if (strEQ(d,"hex")) return -KEY_hex;
3989 if (strEQ(d,"if")) return KEY_if;
3992 if (strEQ(d,"int")) return -KEY_int;
3995 if (strEQ(d,"index")) return -KEY_index;
3996 if (strEQ(d,"ioctl")) return -KEY_ioctl;
4001 if (strEQ(d,"join")) return -KEY_join;
4005 if (strEQ(d,"keys")) return KEY_keys;
4006 if (strEQ(d,"kill")) return -KEY_kill;
4011 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4012 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4018 if (strEQ(d,"lt")) return -KEY_lt;
4019 if (strEQ(d,"le")) return -KEY_le;
4020 if (strEQ(d,"lc")) return -KEY_lc;
4023 if (strEQ(d,"log")) return -KEY_log;
4026 if (strEQ(d,"last")) return KEY_last;
4027 if (strEQ(d,"link")) return -KEY_link;
4030 if (strEQ(d,"local")) return KEY_local;
4031 if (strEQ(d,"lstat")) return -KEY_lstat;
4034 if (strEQ(d,"length")) return -KEY_length;
4035 if (strEQ(d,"listen")) return -KEY_listen;
4038 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4041 if (strEQ(d,"localtime")) return -KEY_localtime;
4047 case 1: return KEY_m;
4049 if (strEQ(d,"my")) return KEY_my;
4052 if (strEQ(d,"map")) return KEY_map;
4055 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4058 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4059 if (strEQ(d,"msgget")) return -KEY_msgget;
4060 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4061 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4066 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4069 if (strEQ(d,"next")) return KEY_next;
4070 if (strEQ(d,"ne")) return -KEY_ne;
4071 if (strEQ(d,"not")) return -KEY_not;
4072 if (strEQ(d,"no")) return KEY_no;
4077 if (strEQ(d,"or")) return -KEY_or;
4080 if (strEQ(d,"ord")) return -KEY_ord;
4081 if (strEQ(d,"oct")) return -KEY_oct;
4084 if (strEQ(d,"open")) return -KEY_open;
4087 if (strEQ(d,"opendir")) return -KEY_opendir;
4094 if (strEQ(d,"pop")) return KEY_pop;
4095 if (strEQ(d,"pos")) return KEY_pos;
4098 if (strEQ(d,"push")) return KEY_push;
4099 if (strEQ(d,"pack")) return -KEY_pack;
4100 if (strEQ(d,"pipe")) return -KEY_pipe;
4103 if (strEQ(d,"print")) return KEY_print;
4106 if (strEQ(d,"printf")) return KEY_printf;
4109 if (strEQ(d,"package")) return KEY_package;
4112 if (strEQ(d,"prototype")) return KEY_prototype;
4117 if (strEQ(d,"q")) return KEY_q;
4118 if (strEQ(d,"qq")) return KEY_qq;
4119 if (strEQ(d,"qw")) return KEY_qw;
4120 if (strEQ(d,"qx")) return KEY_qx;
4122 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4127 if (strEQ(d,"ref")) return -KEY_ref;
4130 if (strEQ(d,"read")) return -KEY_read;
4131 if (strEQ(d,"rand")) return -KEY_rand;
4132 if (strEQ(d,"recv")) return -KEY_recv;
4133 if (strEQ(d,"redo")) return KEY_redo;
4136 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4137 if (strEQ(d,"reset")) return -KEY_reset;
4140 if (strEQ(d,"return")) return KEY_return;
4141 if (strEQ(d,"rename")) return -KEY_rename;
4142 if (strEQ(d,"rindex")) return -KEY_rindex;
4145 if (strEQ(d,"require")) return -KEY_require;
4146 if (strEQ(d,"reverse")) return -KEY_reverse;
4147 if (strEQ(d,"readdir")) return -KEY_readdir;
4150 if (strEQ(d,"readlink")) return -KEY_readlink;
4151 if (strEQ(d,"readline")) return -KEY_readline;
4152 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4155 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4161 case 0: return KEY_s;
4163 if (strEQ(d,"scalar")) return KEY_scalar;
4168 if (strEQ(d,"seek")) return -KEY_seek;
4169 if (strEQ(d,"send")) return -KEY_send;
4172 if (strEQ(d,"semop")) return -KEY_semop;
4175 if (strEQ(d,"select")) return -KEY_select;
4176 if (strEQ(d,"semctl")) return -KEY_semctl;
4177 if (strEQ(d,"semget")) return -KEY_semget;
4180 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4181 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4184 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4185 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4188 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4191 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4192 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4193 if (strEQ(d,"setservent")) return -KEY_setservent;
4196 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4197 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4204 if (strEQ(d,"shift")) return KEY_shift;
4207 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4208 if (strEQ(d,"shmget")) return -KEY_shmget;
4211 if (strEQ(d,"shmread")) return -KEY_shmread;
4214 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4215 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4220 if (strEQ(d,"sin")) return -KEY_sin;
4223 if (strEQ(d,"sleep")) return -KEY_sleep;
4226 if (strEQ(d,"sort")) return KEY_sort;
4227 if (strEQ(d,"socket")) return -KEY_socket;
4228 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4231 if (strEQ(d,"split")) return KEY_split;
4232 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4233 if (strEQ(d,"splice")) return KEY_splice;
4236 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4239 if (strEQ(d,"srand")) return -KEY_srand;
4242 if (strEQ(d,"stat")) return -KEY_stat;
4243 if (strEQ(d,"study")) return KEY_study;
4246 if (strEQ(d,"substr")) return -KEY_substr;
4247 if (strEQ(d,"sub")) return KEY_sub;
4252 if (strEQ(d,"system")) return -KEY_system;
4255 if (strEQ(d,"symlink")) return -KEY_symlink;
4256 if (strEQ(d,"syscall")) return -KEY_syscall;
4257 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4258 if (strEQ(d,"sysread")) return -KEY_sysread;
4259 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4262 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4271 if (strEQ(d,"tr")) return KEY_tr;
4274 if (strEQ(d,"tie")) return KEY_tie;
4277 if (strEQ(d,"tell")) return -KEY_tell;
4278 if (strEQ(d,"tied")) return KEY_tied;
4279 if (strEQ(d,"time")) return -KEY_time;
4282 if (strEQ(d,"times")) return -KEY_times;
4285 if (strEQ(d,"telldir")) return -KEY_telldir;
4288 if (strEQ(d,"truncate")) return -KEY_truncate;
4295 if (strEQ(d,"uc")) return -KEY_uc;
4298 if (strEQ(d,"use")) return KEY_use;
4301 if (strEQ(d,"undef")) return KEY_undef;
4302 if (strEQ(d,"until")) return KEY_until;
4303 if (strEQ(d,"untie")) return KEY_untie;
4304 if (strEQ(d,"utime")) return -KEY_utime;
4305 if (strEQ(d,"umask")) return -KEY_umask;
4308 if (strEQ(d,"unless")) return KEY_unless;
4309 if (strEQ(d,"unpack")) return -KEY_unpack;
4310 if (strEQ(d,"unlink")) return -KEY_unlink;
4313 if (strEQ(d,"unshift")) return KEY_unshift;
4314 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4319 if (strEQ(d,"values")) return -KEY_values;
4320 if (strEQ(d,"vec")) return -KEY_vec;
4325 if (strEQ(d,"warn")) return -KEY_warn;
4326 if (strEQ(d,"wait")) return -KEY_wait;
4329 if (strEQ(d,"while")) return KEY_while;
4330 if (strEQ(d,"write")) return -KEY_write;
4333 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4336 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4341 if (len == 1) return -KEY_x;
4342 if (strEQ(d,"xor")) return -KEY_xor;
4345 if (len == 1) return KEY_y;
4354 checkcomma(s,name,what)
4361 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4363 for (w = s+2; *w && level; w++) {
4370 for (; *w && isSPACE(*w); w++) ;
4371 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4372 warn("%s (...) interpreted as function",name);
4374 while (s < bufend && isSPACE(*s))
4378 while (s < bufend && isSPACE(*s))
4380 if (isIDFIRST(*s)) {
4384 while (s < bufend && isSPACE(*s))
4389 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4393 croak("No comma allowed after %s", what);
4399 scan_word(s, dest, destlen, allow_package, slp)
4406 register char *d = dest;
4407 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4410 croak(ident_too_long);
4413 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4418 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4431 scan_ident(s, send, dest, destlen, ck_uni)
4433 register char *send;
4443 if (lex_brackets == 0)
4448 e = d + destlen - 3; /* two-character token, ending NUL */
4450 while (isDIGIT(*s)) {
4452 croak(ident_too_long);
4459 croak(ident_too_long);
4462 else if (*s == '\'' && isIDFIRST(s[1])) {
4467 else if (*s == ':' && s[1] == ':') {
4478 if (lex_state != LEX_NORMAL)
4479 lex_state = LEX_INTERPENDMAYBE;
4482 if (*s == '$' && s[1] &&
4483 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4485 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4486 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4499 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4504 if (isSPACE(s[-1])) {
4507 if (ch != ' ' && ch != '\t') {
4513 if (isIDFIRST(*d)) {
4515 while (isALNUM(*s) || *s == ':')
4518 while (s < send && (*s == ' ' || *s == '\t')) s++;
4519 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4520 if (dowarn && keyword(dest, d - dest)) {
4521 char *brack = *s == '[' ? "[...]" : "{...}";
4522 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4523 funny, dest, brack, funny, dest, brack);
4525 lex_fakebrack = lex_brackets+1;
4527 lex_brackstack[lex_brackets++] = XOPERATOR;
4533 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4534 lex_state = LEX_INTERPEND;
4537 if (dowarn && lex_state == LEX_NORMAL &&
4538 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4539 warn("Ambiguous use of %c{%s} resolved to %c%s",
4540 funny, dest, funny, dest);
4543 s = bracket; /* let the parser handle it */
4547 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4548 lex_state = LEX_INTERPEND;
4552 void pmflag(pmfl,ch)
4559 *pmfl |= PMf_GLOBAL;
4561 *pmfl |= PMf_CONTINUE;
4565 *pmfl |= PMf_MULTILINE;
4567 *pmfl |= PMf_SINGLELINE;
4569 *pmfl |= PMf_EXTENDED;
4579 s = scan_str(start);
4582 SvREFCNT_dec(lex_stuff);
4584 croak("Search pattern not terminated");
4587 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4588 if (multi_open == '?')
4589 pm->op_pmflags |= PMf_ONCE;
4590 while (*s && strchr("iogcmsx", *s))
4591 pmflag(&pm->op_pmflags,*s++);
4592 pm->op_pmpermflags = pm->op_pmflags;
4595 yylval.ival = OP_MATCH;
4608 yylval.ival = OP_NULL;
4610 s = scan_str(start);
4614 SvREFCNT_dec(lex_stuff);
4616 croak("Substitution pattern not terminated");
4619 if (s[-1] == multi_open)
4622 first_start = multi_start;
4626 SvREFCNT_dec(lex_stuff);
4629 SvREFCNT_dec(lex_repl);
4631 croak("Substitution replacement not terminated");
4633 multi_start = first_start; /* so whole substitution is taken together */
4635 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4636 while (*s && strchr("iogcmsex", *s)) {
4642 pmflag(&pm->op_pmflags,*s++);
4647 pm->op_pmflags |= PMf_EVAL;
4648 repl = newSVpv("",0);
4650 sv_catpv(repl, es ? "eval " : "do ");
4651 sv_catpvn(repl, "{ ", 2);
4652 sv_catsv(repl, lex_repl);
4653 sv_catpvn(repl, " };", 2);
4654 SvCOMPILED_on(repl);
4655 SvREFCNT_dec(lex_repl);
4659 pm->op_pmpermflags = pm->op_pmflags;
4661 yylval.ival = OP_SUBST;
4669 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4670 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4672 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4673 pm->op_pmflags |= PMf_SCANFIRST;
4674 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4675 pm->op_pmslen = SvCUR(pm->op_pmshort);
4677 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4678 if (pm->op_pmshort &&
4679 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4681 if (pm->op_pmflags & PMf_SCANFIRST) {
4682 SvREFCNT_dec(pm->op_pmshort);
4683 pm->op_pmshort = Nullsv;
4686 SvREFCNT_dec(pm->op_pmregexp->regmust);
4687 pm->op_pmregexp->regmust = Nullsv;
4691 /* promote the better string */
4692 if ((!pm->op_pmshort &&
4693 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
4694 ((pm->op_pmflags & PMf_SCANFIRST) &&
4695 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4696 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4697 pm->op_pmshort = pm->op_pmregexp->regmust;
4698 pm->op_pmslen = SvCUR(pm->op_pmshort);
4699 pm->op_pmregexp->regmust = Nullsv;
4700 pm->op_pmflags |= PMf_SCANFIRST;
4716 yylval.ival = OP_NULL;
4718 s = scan_str(start);
4721 SvREFCNT_dec(lex_stuff);
4723 croak("Translation pattern not terminated");
4725 if (s[-1] == multi_open)
4731 SvREFCNT_dec(lex_stuff);
4734 SvREFCNT_dec(lex_repl);
4736 croak("Translation replacement not terminated");
4739 New(803,tbl,256,short);
4740 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4742 complement = delete = squash = 0;
4743 while (*s == 'c' || *s == 'd' || *s == 's') {
4745 complement = OPpTRANS_COMPLEMENT;
4747 delete = OPpTRANS_DELETE;
4749 squash = OPpTRANS_SQUASH;
4752 op->op_private = delete|squash|complement;
4755 yylval.ival = OP_TRANS;
4764 I32 op_type = OP_SCALAR;
4771 int outer = (rsfp && !lex_inwhat);
4775 e = tokenbuf + sizeof tokenbuf - 1;
4778 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4779 if (*peek && strchr("`'\"",*peek)) {
4782 s = delimcpy(d, e, s, bufend, term, &len);
4793 deprecate("bare << to mean <<\"\"");
4794 for (; isALNUM(*s); s++) {
4799 if (d >= tokenbuf + sizeof tokenbuf - 1)
4800 croak("Delimiter for here document is too long");
4805 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4806 herewas = newSVpv(s,bufend-s);
4808 s--, herewas = newSVpv(s,d-s);
4809 s += SvCUR(herewas);
4811 tmpstr = NEWSV(87,80);
4812 sv_upgrade(tmpstr, SVt_PVIV);
4817 else if (term == '`') {
4818 op_type = OP_BACKTICK;
4819 SvIVX(tmpstr) = '\\';
4823 multi_start = curcop->cop_line;
4824 multi_open = multi_close = '<';
4828 while (s < bufend &&
4829 (*s != term || memNE(s,tokenbuf,len)) ) {
4834 curcop->cop_line = multi_start;
4835 missingterm(tokenbuf);
4837 sv_setpvn(tmpstr,d+1,s-d);
4839 sv_catpvn(herewas,s,bufend-s);
4840 sv_setsv(linestr,herewas);
4841 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4842 bufend = SvPVX(linestr) + SvCUR(linestr);
4845 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4846 while (s >= bufend) { /* multiple line string? */
4848 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4849 curcop->cop_line = multi_start;
4850 missingterm(tokenbuf);
4853 if (PERLDB_LINE && curstash != debstash) {
4854 SV *sv = NEWSV(88,0);
4856 sv_upgrade(sv, SVt_PVMG);
4857 sv_setsv(sv,linestr);
4858 av_store(GvAV(curcop->cop_filegv),
4859 (I32)curcop->cop_line,sv);
4861 bufend = SvPVX(linestr) + SvCUR(linestr);
4862 if (*s == term && memEQ(s,tokenbuf,len)) {
4865 sv_catsv(linestr,herewas);
4866 bufend = SvPVX(linestr) + SvCUR(linestr);
4870 sv_catsv(tmpstr,linestr);
4873 multi_end = curcop->cop_line;
4875 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4876 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4877 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4879 SvREFCNT_dec(herewas);
4881 yylval.ival = op_type;
4886 scan_inputsymbol(start)
4889 register char *s = start;
4895 e = tokenbuf + sizeof tokenbuf;
4896 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4897 if (len >= sizeof tokenbuf)
4898 croak("Excessively long <> operator");
4900 croak("Unterminated <> operator");
4902 if (*d == '$' && d[1]) d++;
4903 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4905 if (d - tokenbuf != len) {
4906 yylval.ival = OP_GLOB;
4908 s = scan_str(start);
4910 croak("Glob not terminated");
4916 (void)strcpy(d,"ARGV");
4919 if (tmp = pad_findmy(d)) {
4920 OP *op = newOP(OP_PADSV, 0);
4922 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4925 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4926 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4927 newUNOP(OP_RV2GV, 0,
4928 newUNOP(OP_RV2SV, 0,
4929 newGVOP(OP_GV, 0, gv))));
4931 yylval.ival = OP_NULL;
4934 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4935 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4936 yylval.ival = OP_NULL;
4948 register char *s = start;
4954 /* "#" is allowed as delimiter if on same line */
4955 while (*s == ' ' || *s == '\t')
4962 multi_start = curcop->cop_line;
4964 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4969 sv_upgrade(sv, SVt_PVIV);
4971 (void)SvPOK_only(sv); /* validate pointer */
4974 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4975 to = SvPVX(sv)+SvCUR(sv);
4976 if (multi_open == multi_close) {
4977 for (; s < bufend; s++,to++) {
4978 if (*s == '\n' && !rsfp)
4980 if (*s == '\\' && s+1 < bufend && term != '\\') {
4986 else if (*s == term)
4992 for (; s < bufend; s++,to++) {
4993 if (*s == '\n' && !rsfp)
4995 if (*s == '\\' && s+1 < bufend) {
4996 if ((s[1] == multi_open) || (s[1] == multi_close))
5001 else if (*s == multi_close && --brackets <= 0)
5003 else if (*s == multi_open)
5009 SvCUR_set(sv, to - SvPVX(sv));
5011 if (s < bufend) break; /* string ends on this line? */
5014 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5016 curcop->cop_line = multi_start;
5020 if (PERLDB_LINE && curstash != debstash) {
5021 SV *sv = NEWSV(88,0);
5023 sv_upgrade(sv, SVt_PVMG);
5024 sv_setsv(sv,linestr);
5025 av_store(GvAV(curcop->cop_filegv),
5026 (I32)curcop->cop_line, sv);
5028 bufend = SvPVX(linestr) + SvCUR(linestr);
5030 multi_end = curcop->cop_line;
5032 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5033 SvLEN_set(sv, SvCUR(sv) + 1);
5034 Renew(SvPVX(sv), SvLEN(sv), char);
5047 register char *s = start;
5055 static char number_too_long[] = "Number too long";
5059 croak("panic: scan_num");
5064 bool overflowed = FALSE;
5070 else if (s[1] == '.')
5086 yyerror("Illegal octal digit");
5088 case '0': case '1': case '2': case '3': case '4':
5089 case '5': case '6': case '7':
5092 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5093 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5099 if (!overflowed && (n >> shift) != u) {
5100 warn("Integer overflow in %s number",
5101 (shift == 4) ? "hex" : "octal");
5113 case '1': case '2': case '3': case '4': case '5':
5114 case '6': case '7': case '8': case '9': case '.':
5117 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5119 while (isDIGIT(*s) || *s == '_') {
5121 if (dowarn && lastub && s - lastub != 3)
5122 warn("Misplaced _ in number");
5127 croak(number_too_long);
5131 if (dowarn && lastub && s - lastub != 3)
5132 warn("Misplaced _ in number");
5133 if (*s == '.' && s[1] != '.') {
5136 for (; isDIGIT(*s) || *s == '_'; s++) {
5138 croak(number_too_long);
5143 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5146 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5147 if (*s == '+' || *s == '-')
5149 while (isDIGIT(*s)) {
5151 croak(number_too_long);
5157 SET_NUMERIC_STANDARD();
5158 value = atof(tokenbuf);
5160 if (!floatit && (double)tryiv == value)
5161 sv_setiv(sv, tryiv);
5163 sv_setnv(sv, value);
5167 yylval.opval = newSVOP(OP_CONST, 0, sv);
5178 SV *stuff = newSVpv("",0);
5179 bool needargs = FALSE;
5182 if (*s == '.' || *s == '}') {
5184 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5188 if (in_eval && !rsfp) {
5189 eol = strchr(s,'\n');
5194 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5196 for (t = s; t < eol; t++) {
5197 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5199 goto enough; /* ~~ must be first line in formline */
5201 if (*t == '@' || *t == '^')
5204 sv_catpvn(stuff, s, eol-s);
5208 s = filter_gets(linestr, rsfp, 0);
5209 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5210 bufend = bufptr + SvCUR(linestr);
5213 yyerror("Format not terminated");
5223 lex_state = LEX_NORMAL;
5224 nextval[nexttoke].ival = 0;
5228 lex_state = LEX_FORMLINE;
5229 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5231 nextval[nexttoke].ival = OP_FORMLINE;
5235 SvREFCNT_dec(stuff);
5247 cshlen = strlen(cshname);
5252 start_subparse(is_format, flags)
5256 I32 oldsavestack_ix = savestack_ix;
5257 CV* outsidecv = compcv;
5261 assert(SvTYPE(compcv) == SVt_PVCV);
5268 SAVESPTR(comppad_name);
5270 SAVEI32(comppad_name_fill);
5271 SAVEI32(min_intro_pending);
5272 SAVEI32(max_intro_pending);
5273 SAVEI32(pad_reset_pending);
5275 compcv = (CV*)NEWSV(1104,0);
5276 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5277 CvFLAGS(compcv) |= flags;
5280 comppad_name = newAV();
5281 comppad_name_fill = 0;
5282 min_intro_pending = 0;
5283 av_push(comppad, Nullsv);
5284 curpad = AvARRAY(comppad);
5286 subline = curcop->cop_line;
5288 comppadlist = newAV();
5289 AvREAL_off(comppadlist);
5290 av_store(comppadlist, 0, (SV*)comppad_name);
5291 av_store(comppadlist, 1, (SV*)comppad);
5293 CvPADLIST(compcv) = comppadlist;
5294 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5296 return oldsavestack_ix;
5315 char *context = NULL;
5319 if (!yychar || (yychar == ';' && !rsfp))
5321 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5322 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5323 while (isSPACE(*oldoldbufptr))
5325 context = oldoldbufptr;
5326 contlen = bufptr - oldoldbufptr;
5328 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5329 oldbufptr != bufptr) {
5330 while (isSPACE(*oldbufptr))
5332 context = oldbufptr;
5333 contlen = bufptr - oldbufptr;
5335 else if (yychar > 255)
5336 where = "next token ???";
5337 else if ((yychar & 127) == 127) {
5338 if (lex_state == LEX_NORMAL ||
5339 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5340 where = "at end of line";
5342 where = "within pattern";
5344 where = "within string";
5347 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5349 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5350 else if (isPRINT_LC(yychar))
5351 sv_catpvf(where_sv, "%c", yychar);
5353 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5354 where = SvPVX(where_sv);
5356 msg = sv_2mortal(newSVpv(s, 0));
5357 sv_catpvf(msg, " at %_ line %ld, ",
5358 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5360 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5362 sv_catpvf(msg, "%s\n", where);
5363 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5365 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5366 (int)multi_open,(int)multi_close,(long)multi_start);
5372 sv_catsv(GvSV(errgv), msg);
5374 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5375 if (++error_count >= 10)
5376 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));