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
18 static void check_uni _((void));
19 static void force_next _((I32 type));
20 static char *force_version _((char *start));
21 static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
22 static SV *tokeq _((SV *sv));
23 static char *scan_const _((char *start));
24 static char *scan_formline _((char *s));
25 static char *scan_heredoc _((char *s));
26 static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen,
28 static char *scan_inputsymbol _((char *start));
29 static char *scan_pat _((char *start));
30 static char *scan_str _((char *start));
31 static char *scan_subst _((char *start));
32 static char *scan_trans _((char *start));
33 static char *scan_word _((char *s, char *dest, STRLEN destlen,
34 int allow_package, STRLEN *slp));
35 static char *skipspace _((char *s));
36 static void checkcomma _((char *s, char *name, char *what));
37 static void force_ident _((char *s, int kind));
38 static void incline _((char *s));
39 static int intuit_method _((char *s, GV *gv));
40 static int intuit_more _((char *s));
41 static I32 lop _((I32 f, expectation x, char *s));
42 static void missingterm _((char *s));
43 static void no_op _((char *what, char *s));
44 static void set_csh _((void));
45 static I32 sublex_done _((void));
46 static I32 sublex_push _((void));
47 static I32 sublex_start _((void));
49 static int uni _((I32 f, char *s));
51 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
52 static void restore_rsfp _((void *f));
53 static void restore_expect _((void *e));
54 static void restore_lex_expect _((void *e));
55 #endif /* PERL_OBJECT */
57 static char ident_too_long[] = "Identifier too long";
59 /* The following are arranged oddly so that the guard on the switch statement
60 * can get by with a single comparison (if the compiler is smart enough).
63 /* #define LEX_NOTPARSING 11 is done in perl.h. */
66 #define LEX_INTERPNORMAL 9
67 #define LEX_INTERPCASEMOD 8
68 #define LEX_INTERPPUSH 7
69 #define LEX_INTERPSTART 6
70 #define LEX_INTERPEND 5
71 #define LEX_INTERPENDMAYBE 4
72 #define LEX_INTERPCONCAT 3
73 #define LEX_INTERPCONST 2
74 #define LEX_FORMLINE 1
75 #define LEX_KNOWNEXT 0
84 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
86 # include <unistd.h> /* Needed for execv() */
99 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
101 #define TOKEN(retval) return (bufptr = s,(int)retval)
102 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
103 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
104 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
105 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
106 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
107 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
108 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
109 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
110 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
111 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
112 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
113 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
114 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
115 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
116 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
117 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
118 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
119 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
120 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
122 /* This bit of chicanery makes a unary function followed by
123 * a parenthesis into a function with one argument, highest precedence.
125 #define UNI(f) return(yylval.ival = f, \
128 last_uni = oldbufptr, \
130 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
132 #define UNIBRACK(f) return(yylval.ival = f, \
134 last_uni = oldbufptr, \
135 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
137 /* grandfather return to old style */
138 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
143 if (*bufptr == '=') {
145 if (toketype == ANDAND)
146 yylval.ival = OP_ANDASSIGN;
147 else if (toketype == OROR)
148 yylval.ival = OP_ORASSIGN;
155 no_op(char *what, char *s)
157 char *oldbp = bufptr;
158 bool is_first = (oldbufptr == linestart);
161 yywarn(form("%s found where operator expected", what));
163 warn("\t(Missing semicolon on previous line?)\n");
164 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
166 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
167 if (t < bufptr && isSPACE(*t))
168 warn("\t(Do you need to predeclare %.*s?)\n",
169 t - oldoldbufptr, oldoldbufptr);
173 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
183 char *nl = strrchr(s,'\n');
187 else if (multi_close < 32 || multi_close == 127) {
189 tmpbuf[1] = toCTRL(multi_close);
195 *tmpbuf = multi_close;
199 q = strchr(s,'"') ? '\'' : '"';
200 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
207 warn("Use of %s is deprecated", s);
213 deprecate("comma-less variable list");
219 win32_textfilter(int idx, SV *sv, int maxlen)
221 I32 count = FILTER_READ(idx+1, sv, maxlen);
222 if (count > 0 && !maxlen)
223 win32_strip_return(sv);
237 SAVEI32(lex_brackets);
238 SAVEI32(lex_fakebrack);
239 SAVEI32(lex_casemods);
244 SAVEI16(curcop->cop_line);
248 SAVEPPTR(oldoldbufptr);
251 SAVEPPTR(lex_brackstack);
252 SAVEPPTR(lex_casestack);
253 SAVEDESTRUCTOR(restore_rsfp, rsfp);
257 SAVEDESTRUCTOR(restore_expect, tokenbuf + expect); /* encode as pointer */
258 SAVEDESTRUCTOR(restore_lex_expect, tokenbuf + expect);
260 lex_state = LEX_NORMAL;
265 New(899, lex_brackstack, 120, char);
266 New(899, lex_casestack, 12, char);
267 SAVEFREEPV(lex_brackstack);
268 SAVEFREEPV(lex_casestack);
270 *lex_casestack = '\0';
278 if (SvREADONLY(linestr))
279 linestr = sv_2mortal(newSVsv(linestr));
280 s = SvPV(linestr, len);
281 if (len && s[len-1] != ';') {
282 if (!(SvFLAGS(linestr) & SVs_TEMP))
283 linestr = sv_2mortal(newSVsv(linestr));
284 sv_catpvn(linestr, "\n;", 2);
287 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
288 bufend = bufptr + SvCUR(linestr);
290 rs = newSVpv("\n", 1);
301 restore_rsfp(void *f)
303 PerlIO *fp = (PerlIO*)f;
305 if (rsfp == PerlIO_stdin())
306 PerlIO_clearerr(rsfp);
307 else if (rsfp && (rsfp != fp))
313 restore_expect(void *e)
315 /* a safe way to store a small integer in a pointer */
316 expect = (expectation)((char *)e - tokenbuf);
320 restore_lex_expect(void *e)
322 /* a safe way to store a small integer in a pointer */
323 lex_expect = (expectation)((char *)e - tokenbuf);
338 while (*s == ' ' || *s == '\t') s++;
339 if (strnEQ(s, "line ", 5)) {
348 while (*s == ' ' || *s == '\t')
350 if (*s == '"' && (t = strchr(s+1, '"')))
354 return; /* false alarm */
355 for (t = s; !isSPACE(*t); t++) ;
360 curcop->cop_filegv = gv_fetchfile(s);
362 curcop->cop_filegv = gv_fetchfile(origfilename);
364 curcop->cop_line = atoi(n)-1;
368 skipspace(register char *s)
371 if (lex_formbrack && lex_brackets <= lex_formbrack) {
372 while (s < bufend && (*s == ' ' || *s == '\t'))
378 while (s < bufend && isSPACE(*s))
380 if (s < bufend && *s == '#') {
381 while (s < bufend && *s != '\n')
386 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
388 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
389 if (minus_n || minus_p) {
390 sv_setpv(linestr,minus_p ?
391 ";}continue{print or die qq(-p destination: $!\\n)" :
393 sv_catpv(linestr,";}");
394 minus_n = minus_p = 0;
397 sv_setpv(linestr,";");
398 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
399 bufend = SvPVX(linestr) + SvCUR(linestr);
400 if (preprocess && !in_eval)
401 (void)PerlProc_pclose(rsfp);
402 else if ((PerlIO*)rsfp == PerlIO_stdin())
403 PerlIO_clearerr(rsfp);
405 (void)PerlIO_close(rsfp);
411 linestart = bufptr = s + prevlen;
412 bufend = s + SvCUR(linestr);
415 if (PERLDB_LINE && curstash != debstash) {
416 SV *sv = NEWSV(85,0);
418 sv_upgrade(sv, SVt_PVMG);
419 sv_setpvn(sv,bufptr,bufend-bufptr);
420 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
431 if (oldoldbufptr != last_uni)
433 while (isSPACE(*last_uni))
435 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
436 if ((t = strchr(s, '(')) && t < bufptr)
440 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
447 #define UNI(f) return uni(f,s)
455 last_uni = oldbufptr;
466 #endif /* CRIPPLED_CC */
468 #define LOP(f,x) return lop(f,x,s)
473 (I32 f, expectation x, char *s)
479 #endif /* CAN_PROTOTYPE */
486 last_lop = oldbufptr;
502 nexttype[nexttoke] = type;
504 if (lex_state != LEX_KNOWNEXT) {
505 lex_defer = lex_state;
507 lex_state = LEX_KNOWNEXT;
512 force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick)
517 start = skipspace(start);
520 (allow_pack && *s == ':') ||
521 (allow_initial_tick && *s == '\'') )
523 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
524 if (check_keyword && keyword(tokenbuf, len))
526 if (token == METHOD) {
536 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
537 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
544 force_ident(register char *s, int kind)
547 OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
548 nextval[nexttoke].opval = o;
551 dTHR; /* just for in_eval */
552 o->op_private = OPpCONST_ENTERED;
553 /* XXX see note in pp_entereval() for why we forgo typo
554 warnings if the symbol must be introduced in an eval.
556 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
557 kind == '$' ? SVt_PV :
558 kind == '@' ? SVt_PVAV :
559 kind == '%' ? SVt_PVHV :
567 force_version(char *s)
569 OP *version = Nullop;
573 /* default VERSION number -- GBARR */
578 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
579 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
581 /* real VERSION number -- GBARR */
582 version = yylval.opval;
586 /* NOTE: The parser sees the package name and the VERSION swapped */
587 nextval[nexttoke].opval = version;
604 s = SvPV_force(sv, len);
608 while (s < send && *s != '\\')
615 if (s + 1 < send && (s[1] == '\\'))
616 s++; /* all that, just for this */
621 SvCUR_set(sv, d - SvPVX(sv));
629 register I32 op_type = yylval.ival;
631 if (op_type == OP_NULL) {
632 yylval.opval = lex_op;
636 if (op_type == OP_CONST || op_type == OP_READLINE) {
637 SV *sv = tokeq(lex_stuff);
639 char *p = SvPV(sv, len);
640 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
646 sublex_info.super_state = lex_state;
647 sublex_info.sub_inwhat = op_type;
648 sublex_info.sub_op = lex_op;
649 lex_state = LEX_INTERPPUSH;
653 yylval.opval = lex_op;
667 lex_state = sublex_info.super_state;
669 SAVEI32(lex_brackets);
670 SAVEI32(lex_fakebrack);
671 SAVEI32(lex_casemods);
676 SAVEI16(curcop->cop_line);
679 SAVEPPTR(oldoldbufptr);
682 SAVEPPTR(lex_brackstack);
683 SAVEPPTR(lex_casestack);
688 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
689 bufend += SvCUR(linestr);
695 New(899, lex_brackstack, 120, char);
696 New(899, lex_casestack, 12, char);
697 SAVEFREEPV(lex_brackstack);
698 SAVEFREEPV(lex_casestack);
700 *lex_casestack = '\0';
702 lex_state = LEX_INTERPCONCAT;
703 curcop->cop_line = multi_start;
705 lex_inwhat = sublex_info.sub_inwhat;
706 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
707 lex_inpat = sublex_info.sub_op;
719 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
723 if (lex_casemods) { /* oops, we've got some unbalanced parens */
724 lex_state = LEX_INTERPCASEMOD;
728 /* Is there a right-hand side to take care of? */
729 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
732 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
733 bufend += SvCUR(linestr);
739 *lex_casestack = '\0';
741 if (SvCOMPILED(lex_repl)) {
742 lex_state = LEX_INTERPNORMAL;
746 lex_state = LEX_INTERPCONCAT;
752 bufend = SvPVX(linestr);
753 bufend += SvCUR(linestr);
760 scan_const(char *start)
762 register char *send = bufend;
763 SV *sv = NEWSV(93, send - start);
764 register char *s = start;
765 register char *d = SvPVX(sv);
766 bool dorange = FALSE;
770 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
771 : (lex_inwhat & OP_TRANS)
775 while (s < send || dorange) {
776 if (lex_inwhat == OP_TRANS) {
781 SvGROW(sv, SvLEN(sv) + 256);
785 for (i = (U8)*d; i <= max; i++)
790 else if (*s == '-' && s+1 < send && s != start) {
795 else if (*s == '(' && lex_inpat && s[1] == '?') {
797 while (s < send && *s != ')')
799 } else if (s[2] == '{') { /* This should march regcomp.c */
801 char *regparse = s + 3;
804 while (count && (c = *regparse)) {
805 if (c == '\\' && regparse[1])
813 if (*regparse == ')')
816 yyerror("Sequence (?{...}) not terminated or not {}-balanced");
817 while (s < regparse && *s != ')')
821 else if (*s == '#' && lex_inpat &&
822 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
823 while (s+1 < send && *s != '\n')
826 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
828 else if (*s == '$') {
829 if (!lex_inpat) /* not a regexp, so $ must be var */
831 if (s + 1 < send && !strchr("()| \n\t", s[1]))
832 break; /* in regexp, $ might be tail anchor */
834 if (*s == '\\' && s+1 < send) {
836 if (*s && strchr(leaveit, *s)) {
841 if (lex_inwhat == OP_SUBST && !lex_inpat &&
842 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
845 warn("\\%c better written as $%c", *s, *s);
849 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
855 if (lex_inwhat == OP_TRANS) {
863 case '0': case '1': case '2': case '3':
864 case '4': case '5': case '6': case '7':
865 *d++ = scan_oct(s, 3, &len);
869 *d++ = scan_hex(++s, 2, &len);
905 SvCUR_set(sv, d - SvPVX(sv));
908 if (SvCUR(sv) + 5 < SvLEN(sv)) {
909 SvLEN_set(sv, SvCUR(sv) + 1);
910 Renew(SvPVX(sv), SvLEN(sv), char);
913 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
919 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
921 intuit_more(register char *s)
925 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
927 if (*s != '{' && *s != '[')
932 /* In a pattern, so maybe we have {n,m}. */
949 /* On the other hand, maybe we have a character class */
952 if (*s == ']' || *s == '^')
955 int weight = 2; /* let's weigh the evidence */
957 unsigned char un_char = 0, last_un_char;
958 char *send = strchr(s,']');
959 char tmpbuf[sizeof tokenbuf * 4];
961 if (!send) /* has to be an expression */
967 else if (isDIGIT(*s)) {
969 if (isDIGIT(s[1]) && s[2] == ']')
975 for (; s < send; s++) {
976 last_un_char = un_char;
977 un_char = (unsigned char)*s;
982 weight -= seen[un_char] * 10;
984 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
985 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
990 else if (*s == '$' && s[1] &&
991 strchr("[#!%*<>()-=",s[1])) {
992 if (/*{*/ strchr("])} =",s[2]))
1001 if (strchr("wds]",s[1]))
1003 else if (seen['\''] || seen['"'])
1005 else if (strchr("rnftbxcav",s[1]))
1007 else if (isDIGIT(s[1])) {
1009 while (s[1] && isDIGIT(s[1]))
1019 if (strchr("aA01! ",last_un_char))
1021 if (strchr("zZ79~",s[1]))
1025 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
1026 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1031 if (keyword(tmpbuf, d - tmpbuf))
1034 if (un_char == last_un_char + 1)
1036 weight -= seen[un_char];
1041 if (weight >= 0) /* probably a character class */
1049 intuit_method(char *start, GV *gv)
1051 char *s = start + (*start == '$');
1052 char tmpbuf[sizeof tokenbuf];
1060 if ((cv = GvCVu(gv))) {
1061 char *proto = SvPVX(cv);
1071 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
1072 if (*start == '$') {
1073 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1078 return *s == '(' ? FUNCMETH : METHOD;
1080 if (!keyword(tmpbuf, len)) {
1081 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1082 if (indirgv && GvCVu(indirgv))
1084 /* filehandle or package name makes it a method */
1085 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1087 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1088 return 0; /* no assumptions -- "=>" quotes bearword */
1089 nextval[nexttoke].opval =
1090 (OP*)newSVOP(OP_CONST, 0,
1092 nextval[nexttoke].opval->op_private =
1097 return *s == '(' ? FUNCMETH : METHOD;
1107 char *pdb = PerlEnv_getenv("PERL5DB");
1111 SETERRNO(0,SS$_NORMAL);
1112 return "BEGIN { require 'perl5db.pl' }";
1118 /* Encoded script support. filter_add() effectively inserts a
1119 * 'pre-processing' function into the current source input stream.
1120 * Note that the filter function only applies to the current source file
1121 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1123 * The datasv parameter (which may be NULL) can be used to pass
1124 * private data to this instance of the filter. The filter function
1125 * can recover the SV using the FILTER_DATA macro and use it to
1126 * store private buffers and state information.
1128 * The supplied datasv parameter is upgraded to a PVIO type
1129 * and the IoDIRP field is used to store the function pointer.
1130 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1131 * private use must be set using malloc'd pointers.
1133 static int filter_debug = 0;
1136 filter_add(filter_t funcp, SV *datasv)
1138 if (!funcp){ /* temporary handy debugging hack to be deleted */
1139 filter_debug = atoi((char*)datasv);
1143 rsfp_filters = newAV();
1145 datasv = NEWSV(255,0);
1146 if (!SvUPGRADE(datasv, SVt_PVIO))
1147 die("Can't upgrade filter_add data to SVt_PVIO");
1148 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1150 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1151 av_unshift(rsfp_filters, 1);
1152 av_store(rsfp_filters, 0, datasv) ;
1157 /* Delete most recently added instance of this filter function. */
1159 filter_del(filter_t funcp)
1162 warn("filter_del func %p", funcp);
1163 if (!rsfp_filters || AvFILLp(rsfp_filters)<0)
1165 /* if filter is on top of stack (usual case) just pop it off */
1166 if (IoDIRP(FILTER_DATA(AvFILLp(rsfp_filters))) == (void*)funcp){
1167 sv_free(av_pop(rsfp_filters));
1171 /* we need to search for the correct entry and clear it */
1172 die("filter_del can only delete in reverse order (currently)");
1176 /* Invoke the n'th filter function for the current rsfp. */
1178 filter_read(int idx, SV *buf_sv, int maxlen)
1181 /* 0 = read one text line */
1188 if (idx > AvFILLp(rsfp_filters)){ /* Any more filters? */
1189 /* Provide a default input filter to make life easy. */
1190 /* Note that we append to the line. This is handy. */
1192 warn("filter_read %d: from rsfp\n", idx);
1196 int old_len = SvCUR(buf_sv) ;
1198 /* ensure buf_sv is large enough */
1199 SvGROW(buf_sv, old_len + maxlen) ;
1200 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1201 if (PerlIO_error(rsfp))
1202 return -1; /* error */
1204 return 0 ; /* end of file */
1206 SvCUR_set(buf_sv, old_len + len) ;
1209 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1210 if (PerlIO_error(rsfp))
1211 return -1; /* error */
1213 return 0 ; /* end of file */
1217 return SvCUR(buf_sv);
1219 /* Skip this filter slot if filter has been deleted */
1220 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1222 warn("filter_read %d: skipped (filter deleted)\n", idx);
1223 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1225 /* Get function pointer hidden within datasv */
1226 funcp = (filter_t)IoDIRP(datasv);
1228 warn("filter_read %d: via function %p (%s)\n",
1229 idx, funcp, SvPV(datasv,na));
1230 /* Call function. The function is expected to */
1231 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1232 /* Return: <0:error, =0:eof, >0:not eof */
1233 return (*funcp)(idx, buf_sv, maxlen);
1238 filter_gets(register SV *sv, register PerlIO *fp, STRLEN append)
1241 if (!rsfp_filters) {
1242 filter_add(win32_textfilter,NULL);
1248 SvCUR_set(sv, 0); /* start with empty line */
1249 if (FILTER_READ(0, sv, 0) > 0)
1250 return ( SvPVX(sv) ) ;
1255 return (sv_gets(sv, fp, append));
1260 static char* exp_name[] =
1261 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1264 EXT int yychar; /* last token */
1277 if (pending_ident) {
1278 char pit = pending_ident;
1282 if (strchr(tokenbuf,':'))
1283 croak(no_myglob,tokenbuf);
1284 yylval.opval = newOP(OP_PADANY, 0);
1285 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1289 if (!strchr(tokenbuf,':')) {
1291 /* Check for single character per-thread SVs */
1292 if (tokenbuf[0] == '$' && tokenbuf[2] == '\0'
1293 && !isALPHA(tokenbuf[1]) /* Rule out obvious non-threadsvs */
1294 && (tmp = find_threadsv(&tokenbuf[1])) != NOT_IN_PAD)
1296 yylval.opval = newOP(OP_THREADSV, 0);
1297 yylval.opval->op_targ = tmp;
1300 #endif /* USE_THREADS */
1301 if ((tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1302 if (last_lop_op == OP_SORT &&
1303 tokenbuf[0] == '$' &&
1304 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1307 for (d = in_eval ? oldoldbufptr : linestart;
1308 d < bufend && *d != '\n';
1311 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1312 croak("Can't use \"my %s\" in sort comparison",
1318 yylval.opval = newOP(OP_PADANY, 0);
1319 yylval.opval->op_targ = tmp;
1324 /* Force them to make up their mind on "@foo". */
1325 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1326 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1327 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1328 yyerror(form("In string, %s now must be written as \\%s",
1329 tokenbuf, tokenbuf));
1332 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1333 yylval.opval->op_private = OPpCONST_ENTERED;
1334 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1335 ((tokenbuf[0] == '$') ? SVt_PV
1336 : (tokenbuf[0] == '@') ? SVt_PVAV
1341 switch (lex_state) {
1343 case LEX_NORMAL: /* Some compilers will produce faster */
1344 case LEX_INTERPNORMAL: /* code if we comment these out. */
1350 yylval = nextval[nexttoke];
1352 lex_state = lex_defer;
1353 expect = lex_expect;
1354 lex_defer = LEX_NORMAL;
1356 return(nexttype[nexttoke]);
1358 case LEX_INTERPCASEMOD:
1360 if (bufptr != bufend && *bufptr != '\\')
1361 croak("panic: INTERPCASEMOD");
1363 if (bufptr == bufend || bufptr[1] == 'E') {
1366 oldmod = lex_casestack[--lex_casemods];
1367 lex_casestack[lex_casemods] = '\0';
1368 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1370 lex_state = LEX_INTERPCONCAT;
1374 if (bufptr != bufend)
1376 lex_state = LEX_INTERPCONCAT;
1381 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1382 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1383 if (strchr("LU", *s) &&
1384 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1386 lex_casestack[--lex_casemods] = '\0';
1389 if (lex_casemods > 10) {
1390 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1391 if (newlb != lex_casestack) {
1393 lex_casestack = newlb;
1396 lex_casestack[lex_casemods++] = *s;
1397 lex_casestack[lex_casemods] = '\0';
1398 lex_state = LEX_INTERPCONCAT;
1399 nextval[nexttoke].ival = 0;
1402 nextval[nexttoke].ival = OP_LCFIRST;
1404 nextval[nexttoke].ival = OP_UCFIRST;
1406 nextval[nexttoke].ival = OP_LC;
1408 nextval[nexttoke].ival = OP_UC;
1410 nextval[nexttoke].ival = OP_QUOTEMETA;
1412 croak("panic: yylex");
1424 case LEX_INTERPPUSH:
1425 return sublex_push();
1427 case LEX_INTERPSTART:
1428 if (bufptr == bufend)
1429 return sublex_done();
1431 lex_dojoin = (*bufptr == '@');
1432 lex_state = LEX_INTERPNORMAL;
1434 nextval[nexttoke].ival = 0;
1437 nextval[nexttoke].opval = newOP(OP_THREADSV, 0);
1438 nextval[nexttoke].opval->op_targ = find_threadsv("\"");
1439 force_next(PRIVATEREF);
1441 force_ident("\"", '$');
1442 #endif /* USE_THREADS */
1443 nextval[nexttoke].ival = 0;
1445 nextval[nexttoke].ival = 0;
1447 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1456 case LEX_INTERPENDMAYBE:
1457 if (intuit_more(bufptr)) {
1458 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1466 lex_state = LEX_INTERPCONCAT;
1470 case LEX_INTERPCONCAT:
1473 croak("panic: INTERPCONCAT");
1475 if (bufptr == bufend)
1476 return sublex_done();
1478 if (SvIVX(linestr) == '\'') {
1479 SV *sv = newSVsv(linestr);
1482 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1486 s = scan_const(bufptr);
1488 lex_state = LEX_INTERPCASEMOD;
1490 lex_state = LEX_INTERPSTART;
1494 nextval[nexttoke] = yylval;
1507 lex_state = LEX_NORMAL;
1508 s = scan_formline(bufptr);
1515 oldoldbufptr = oldbufptr;
1518 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1524 croak("Unrecognized character \\%03o", *s & 255);
1527 goto fake_eof; /* emulate EOF on ^D or ^Z */
1533 yyerror("Missing right bracket");
1537 goto retry; /* ignore stray nulls */
1540 if (!in_eval && !preambled) {
1542 sv_setpv(linestr,incl_perldb());
1544 sv_catpv(linestr,";");
1546 while(AvFILLp(preambleav) >= 0) {
1547 SV *tmpsv = av_shift(preambleav);
1548 sv_catsv(linestr, tmpsv);
1549 sv_catpv(linestr, ";");
1552 sv_free((SV*)preambleav);
1555 if (minus_n || minus_p) {
1556 sv_catpv(linestr, "LINE: while (<>) {");
1558 sv_catpv(linestr,"chomp;");
1560 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1562 GvIMPORTED_AV_on(gv);
1564 if (strchr("/'\"", *splitstr)
1565 && strchr(splitstr + 1, *splitstr))
1566 sv_catpvf(linestr, "@F=split(%s);", splitstr);
1569 s = "'~#\200\1'"; /* surely one char is unused...*/
1570 while (s[1] && strchr(splitstr, *s)) s++;
1572 sv_catpvf(linestr, "@F=split(%s%c",
1573 "q" + (delim == '\''), delim);
1574 for (s = splitstr; *s; s++) {
1576 sv_catpvn(linestr, "\\", 1);
1577 sv_catpvn(linestr, s, 1);
1579 sv_catpvf(linestr, "%c);", delim);
1583 sv_catpv(linestr,"@F=split(' ');");
1586 sv_catpv(linestr, "\n");
1587 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1588 bufend = SvPVX(linestr) + SvCUR(linestr);
1589 if (PERLDB_LINE && curstash != debstash) {
1590 SV *sv = NEWSV(85,0);
1592 sv_upgrade(sv, SVt_PVMG);
1593 sv_setsv(sv,linestr);
1594 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1599 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1602 if (preprocess && !in_eval)
1603 (void)PerlProc_pclose(rsfp);
1604 else if ((PerlIO *)rsfp == PerlIO_stdin())
1605 PerlIO_clearerr(rsfp);
1607 (void)PerlIO_close(rsfp);
1612 if (!in_eval && (minus_n || minus_p)) {
1613 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1614 sv_catpv(linestr,";}");
1615 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1616 bufend = SvPVX(linestr) + SvCUR(linestr);
1617 minus_n = minus_p = 0;
1620 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1621 sv_setpv(linestr,"");
1622 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1625 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1628 /* Incest with pod. */
1629 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1630 sv_setpv(linestr, "");
1631 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1632 bufend = SvPVX(linestr) + SvCUR(linestr);
1637 } while (doextract);
1638 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1639 if (PERLDB_LINE && curstash != debstash) {
1640 SV *sv = NEWSV(85,0);
1642 sv_upgrade(sv, SVt_PVMG);
1643 sv_setsv(sv,linestr);
1644 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1646 bufend = SvPVX(linestr) + SvCUR(linestr);
1647 if (curcop->cop_line == 1) {
1648 while (s < bufend && isSPACE(*s))
1650 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1654 if (*s == '#' && *(s+1) == '!')
1656 #ifdef ALTERNATE_SHEBANG
1658 static char as[] = ALTERNATE_SHEBANG;
1659 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1660 d = s + (sizeof(as) - 1);
1662 #endif /* ALTERNATE_SHEBANG */
1671 while (*d && !isSPACE(*d))
1675 #ifdef ARG_ZERO_IS_SCRIPT
1676 if (ipathend > ipath) {
1678 * HP-UX (at least) sets argv[0] to the script name,
1679 * which makes $^X incorrect. And Digital UNIX and Linux,
1680 * at least, set argv[0] to the basename of the Perl
1681 * interpreter. So, having found "#!", we'll set it right.
1683 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1684 assert(SvPOK(x) || SvGMAGICAL(x));
1685 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1686 sv_setpvn(x, ipath, ipathend - ipath);
1689 TAINT_NOT; /* $^X is always tainted, but that's OK */
1691 #endif /* ARG_ZERO_IS_SCRIPT */
1696 d = instr(s,"perl -");
1698 d = instr(s,"perl");
1699 #ifdef ALTERNATE_SHEBANG
1701 * If the ALTERNATE_SHEBANG on this system starts with a
1702 * character that can be part of a Perl expression, then if
1703 * we see it but not "perl", we're probably looking at the
1704 * start of Perl code, not a request to hand off to some
1705 * other interpreter. Similarly, if "perl" is there, but
1706 * not in the first 'word' of the line, we assume the line
1707 * contains the start of the Perl program.
1709 if (d && *s != '#') {
1711 while (*c && !strchr("; \t\r\n\f\v#", *c))
1714 d = Nullch; /* "perl" not in first word; ignore */
1716 *s = '#'; /* Don't try to parse shebang line */
1718 #endif /* ALTERNATE_SHEBANG */
1723 !instr(s,"indir") &&
1724 instr(origargv[0],"perl"))
1730 while (s < bufend && isSPACE(*s))
1733 Newz(899,newargv,origargc+3,char*);
1735 while (s < bufend && !isSPACE(*s))
1738 Copy(origargv+1, newargv+2, origargc+1, char*);
1743 execv(ipath, newargv);
1744 croak("Can't exec %s", ipath);
1747 U32 oldpdb = perldb;
1748 bool oldn = minus_n;
1749 bool oldp = minus_p;
1751 while (*d && !isSPACE(*d)) d++;
1752 while (*d == ' ' || *d == '\t') d++;
1756 if (*d == 'M' || *d == 'm') {
1758 while (*d && !isSPACE(*d)) d++;
1759 croak("Too late for \"-%.*s\" option",
1762 d = moreswitches(d);
1764 if (PERLDB_LINE && !oldpdb ||
1765 ( minus_n || minus_p ) && !(oldn || oldp) )
1766 /* if we have already added "LINE: while (<>) {",
1767 we must not do it again */
1769 sv_setpv(linestr, "");
1770 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1771 bufend = SvPVX(linestr) + SvCUR(linestr);
1774 (void)gv_fetchfile(origfilename);
1781 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1783 lex_state = LEX_FORMLINE;
1789 warn("Illegal character \\%03o (carriage return)", '\r');
1791 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1793 case ' ': case '\t': case '\f': case 013:
1798 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1800 while (s < d && *s != '\n')
1805 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1807 lex_state = LEX_FORMLINE;
1817 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1822 while (s < bufend && (*s == ' ' || *s == '\t'))
1825 if (strnEQ(s,"=>",2)) {
1827 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1828 (int)tmp, (int)tmp);
1829 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1830 OPERATOR('-'); /* unary minus */
1832 last_uni = oldbufptr;
1833 last_lop_op = OP_FTEREAD; /* good enough */
1835 case 'r': FTST(OP_FTEREAD);
1836 case 'w': FTST(OP_FTEWRITE);
1837 case 'x': FTST(OP_FTEEXEC);
1838 case 'o': FTST(OP_FTEOWNED);
1839 case 'R': FTST(OP_FTRREAD);
1840 case 'W': FTST(OP_FTRWRITE);
1841 case 'X': FTST(OP_FTREXEC);
1842 case 'O': FTST(OP_FTROWNED);
1843 case 'e': FTST(OP_FTIS);
1844 case 'z': FTST(OP_FTZERO);
1845 case 's': FTST(OP_FTSIZE);
1846 case 'f': FTST(OP_FTFILE);
1847 case 'd': FTST(OP_FTDIR);
1848 case 'l': FTST(OP_FTLINK);
1849 case 'p': FTST(OP_FTPIPE);
1850 case 'S': FTST(OP_FTSOCK);
1851 case 'u': FTST(OP_FTSUID);
1852 case 'g': FTST(OP_FTSGID);
1853 case 'k': FTST(OP_FTSVTX);
1854 case 'b': FTST(OP_FTBLK);
1855 case 'c': FTST(OP_FTCHR);
1856 case 't': FTST(OP_FTTTY);
1857 case 'T': FTST(OP_FTTEXT);
1858 case 'B': FTST(OP_FTBINARY);
1859 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1860 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1861 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1863 croak("Unrecognized file test: -%c", (int)tmp);
1870 if (expect == XOPERATOR)
1875 else if (*s == '>') {
1878 if (isIDFIRST(*s)) {
1879 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1887 if (expect == XOPERATOR)
1890 if (isSPACE(*s) || !isSPACE(*bufptr))
1892 OPERATOR('-'); /* unary minus */
1899 if (expect == XOPERATOR)
1904 if (expect == XOPERATOR)
1907 if (isSPACE(*s) || !isSPACE(*bufptr))
1913 if (expect != XOPERATOR) {
1914 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
1916 force_ident(tokenbuf, '*');
1929 if (expect == XOPERATOR) {
1934 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
1937 yyerror("Final % should be \\% or %name");
1940 pending_ident = '%';
1962 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1963 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1968 if (curcop->cop_line < copline)
1969 copline = curcop->cop_line;
1980 if (lex_brackets <= 0)
1981 yyerror("Unmatched right bracket");
1984 if (lex_state == LEX_INTERPNORMAL) {
1985 if (lex_brackets == 0) {
1986 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1987 lex_state = LEX_INTERPEND;
1994 if (lex_brackets > 100) {
1995 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1996 if (newlb != lex_brackstack) {
1998 lex_brackstack = newlb;
2003 if (lex_formbrack) {
2007 if (oldoldbufptr == last_lop)
2008 lex_brackstack[lex_brackets++] = XTERM;
2010 lex_brackstack[lex_brackets++] = XOPERATOR;
2011 OPERATOR(HASHBRACK);
2013 while (s < bufend && (*s == ' ' || *s == '\t'))
2017 if (d < bufend && *d == '-') {
2020 while (d < bufend && (*d == ' ' || *d == '\t'))
2023 if (d < bufend && isIDFIRST(*d)) {
2024 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
2026 while (d < bufend && (*d == ' ' || *d == '\t'))
2029 char minus = (tokenbuf[0] == '-');
2031 (keyword(tokenbuf + 1, len) ||
2032 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
2033 perl_get_cv(tokenbuf + 1, FALSE) ))
2034 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
2035 tokenbuf + !minus, tokenbuf + !minus);
2036 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
2043 lex_brackstack[lex_brackets++] = XSTATE;
2047 lex_brackstack[lex_brackets++] = XOPERATOR;
2052 if (oldoldbufptr == last_lop)
2053 lex_brackstack[lex_brackets++] = XTERM;
2055 lex_brackstack[lex_brackets++] = XOPERATOR;
2058 if (expect == XSTATE) {
2059 lex_brackstack[lex_brackets-1] = XSTATE;
2062 OPERATOR(HASHBRACK);
2064 /* This hack serves to disambiguate a pair of curlies
2065 * as being a block or an anon hash. Normally, expectation
2066 * determines that, but in cases where we're not in a
2067 * position to expect anything in particular (like inside
2068 * eval"") we have to resolve the ambiguity. This code
2069 * covers the case where the first term in the curlies is a
2070 * quoted string. Most other cases need to be explicitly
2071 * disambiguated by prepending a `+' before the opening
2072 * curly in order to force resolution as an anon hash.
2074 * XXX should probably propagate the outer expectation
2075 * into eval"" to rely less on this hack, but that could
2076 * potentially break current behavior of eval"".
2080 if (*s == '\'' || *s == '"' || *s == '`') {
2081 /* common case: get past first string, handling escapes */
2082 for (t++; t < bufend && *t != *s;)
2083 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2087 else if (*s == 'q') {
2090 || ((*t == 'q' || *t == 'x') && ++t < bufend
2091 && !isALNUM(*t)))) {
2093 char open, close, term;
2096 while (t < bufend && isSPACE(*t))
2100 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2104 for (t++; t < bufend; t++) {
2105 if (*t == '\\' && t+1 < bufend && open != '\\')
2107 else if (*t == open)
2111 for (t++; t < bufend; t++) {
2112 if (*t == '\\' && t+1 < bufend)
2114 else if (*t == close && --brackets <= 0)
2116 else if (*t == open)
2122 else if (isALPHA(*s)) {
2123 for (t++; t < bufend && isALNUM(*t); t++) ;
2125 while (t < bufend && isSPACE(*t))
2127 /* if comma follows first term, call it an anon hash */
2128 /* XXX it could be a comma expression with loop modifiers */
2129 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2130 || (*t == '=' && t[1] == '>')))
2131 OPERATOR(HASHBRACK);
2135 lex_brackstack[lex_brackets-1] = XSTATE;
2141 yylval.ival = curcop->cop_line;
2142 if (isSPACE(*s) || *s == '#')
2143 copline = NOLINE; /* invalidate current command line number */
2148 if (lex_brackets <= 0)
2149 yyerror("Unmatched right bracket");
2151 expect = (expectation)lex_brackstack[--lex_brackets];
2152 if (lex_brackets < lex_formbrack)
2154 if (lex_state == LEX_INTERPNORMAL) {
2155 if (lex_brackets == 0) {
2156 if (lex_fakebrack) {
2157 lex_state = LEX_INTERPEND;
2159 return yylex(); /* ignore fake brackets */
2161 if (*s == '-' && s[1] == '>')
2162 lex_state = LEX_INTERPENDMAYBE;
2163 else if (*s != '[' && *s != '{')
2164 lex_state = LEX_INTERPEND;
2167 if (lex_brackets < lex_fakebrack) {
2170 return yylex(); /* ignore fake brackets */
2180 if (expect == XOPERATOR) {
2181 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2189 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
2192 force_ident(tokenbuf, '&');
2196 yylval.ival = (OPpENTERSUB_AMPER<<8);
2215 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2216 warn("Reversed %c= operator",(int)tmp);
2218 if (expect == XSTATE && isALPHA(tmp) &&
2219 (s == linestart+1 || s[-2] == '\n') )
2221 if (in_eval && !rsfp) {
2226 if (strnEQ(s,"=cut",4)) {
2243 if (lex_brackets < lex_formbrack) {
2245 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2246 if (*t == '\n' || *t == '#') {
2264 if (expect != XOPERATOR) {
2265 if (s[1] != '<' && !strchr(s,'>'))
2268 s = scan_heredoc(s);
2270 s = scan_inputsymbol(s);
2271 TERM(sublex_start());
2276 SHop(OP_LEFT_SHIFT);
2290 SHop(OP_RIGHT_SHIFT);
2299 if (expect == XOPERATOR) {
2300 if (lex_formbrack && lex_brackets == lex_formbrack) {
2303 return ','; /* grandfather non-comma-format format */
2307 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2308 if (expect == XOPERATOR)
2309 no_op("Array length", bufptr);
2311 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2316 pending_ident = '#';
2320 if (expect == XOPERATOR)
2321 no_op("Scalar", bufptr);
2323 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2326 yyerror("Final $ should be \\$ or $name");
2330 /* This kludge not intended to be bulletproof. */
2331 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2332 yylval.opval = newSVOP(OP_CONST, 0,
2333 newSViv((IV)compiling.cop_arybase));
2334 yylval.opval->op_private = OPpCONST_ARYBASE;
2339 if (lex_state == LEX_NORMAL)
2342 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2348 isSPACE(*t) || isALNUM(*t) || *t == '$';
2351 bufptr = skipspace(bufptr);
2352 while (t < bufend && *t != ']')
2354 warn("Multidimensional syntax %.*s not supported",
2355 (t - bufptr) + 1, bufptr);
2359 else if (*s == '{') {
2361 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2362 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2364 char tmpbuf[sizeof tokenbuf];
2366 for (t++; isSPACE(*t); t++) ;
2367 if (isIDFIRST(*t)) {
2368 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
2369 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2370 warn("You need to quote \"%s\"", tmpbuf);
2377 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2378 bool islop = (last_lop == oldoldbufptr);
2379 if (!islop || last_lop_op == OP_GREPSTART)
2381 else if (strchr("$@\"'`q", *s))
2382 expect = XTERM; /* e.g. print $fh "foo" */
2383 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2384 expect = XTERM; /* e.g. print $fh &sub */
2385 else if (isIDFIRST(*s)) {
2386 char tmpbuf[sizeof tokenbuf];
2387 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
2388 if (tmp = keyword(tmpbuf, len)) {
2389 /* binary operators exclude handle interpretations */
2401 expect = XTERM; /* e.g. print $fh length() */
2406 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2407 if (gv && GvCVu(gv))
2408 expect = XTERM; /* e.g. print $fh subr() */
2411 else if (isDIGIT(*s))
2412 expect = XTERM; /* e.g. print $fh 3 */
2413 else if (*s == '.' && isDIGIT(s[1]))
2414 expect = XTERM; /* e.g. print $fh .3 */
2415 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2416 expect = XTERM; /* e.g. print $fh -1 */
2417 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2418 expect = XTERM; /* print $fh <<"EOF" */
2420 pending_ident = '$';
2424 if (expect == XOPERATOR)
2427 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
2430 yyerror("Final @ should be \\@ or @name");
2433 if (lex_state == LEX_NORMAL)
2435 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2439 /* Warn about @ where they meant $. */
2441 if (*s == '[' || *s == '{') {
2443 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2445 if (*t == '}' || *t == ']') {
2447 bufptr = skipspace(bufptr);
2448 warn("Scalar value %.*s better written as $%.*s",
2449 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2454 pending_ident = '@';
2457 case '/': /* may either be division or pattern */
2458 case '?': /* may either be conditional or pattern */
2459 if (expect != XOPERATOR) {
2460 /* Disable warning on "study /blah/" */
2461 if (oldoldbufptr == last_uni
2462 && (*last_uni != 's' || s - last_uni < 5
2463 || memNE(last_uni, "study", 5) || isALNUM(last_uni[5])))
2466 TERM(sublex_start());
2474 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2475 (s == linestart || s[-1] == '\n') ) {
2480 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2486 yylval.ival = OPf_SPECIAL;
2492 if (expect != XOPERATOR)
2497 case '0': case '1': case '2': case '3': case '4':
2498 case '5': case '6': case '7': case '8': case '9':
2500 if (expect == XOPERATOR)
2506 if (expect == XOPERATOR) {
2507 if (lex_formbrack && lex_brackets == lex_formbrack) {
2510 return ','; /* grandfather non-comma-format format */
2516 missingterm((char*)0);
2517 yylval.ival = OP_CONST;
2518 TERM(sublex_start());
2522 if (expect == XOPERATOR) {
2523 if (lex_formbrack && lex_brackets == lex_formbrack) {
2526 return ','; /* grandfather non-comma-format format */
2532 missingterm((char*)0);
2533 yylval.ival = OP_CONST;
2534 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2535 if (*d == '$' || *d == '@' || *d == '\\') {
2536 yylval.ival = OP_STRINGIFY;
2540 TERM(sublex_start());
2544 if (expect == XOPERATOR)
2545 no_op("Backticks",s);
2547 missingterm((char*)0);
2548 yylval.ival = OP_BACKTICK;
2550 TERM(sublex_start());
2554 if (dowarn && lex_inwhat && isDIGIT(*s))
2555 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2556 if (expect == XOPERATOR)
2557 no_op("Backslash",s);
2561 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2600 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2602 /* Some keywords can be followed by any delimiter, including ':' */
2603 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2604 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2605 (tokenbuf[0] == 'q' &&
2606 strchr("qwx", tokenbuf[1]))));
2608 /* x::* is just a word, unless x is "CORE" */
2609 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2613 while (d < bufend && isSPACE(*d))
2614 d++; /* no comments skipped here, or s### is misparsed */
2616 /* Is this a label? */
2617 if (!tmp && expect == XSTATE
2618 && d < bufend && *d == ':' && *(d + 1) != ':') {
2620 yylval.pval = savepv(tokenbuf);
2625 /* Check for keywords */
2626 tmp = keyword(tokenbuf, len);
2628 /* Is this a word before a => operator? */
2629 if (strnEQ(d,"=>",2)) {
2631 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2632 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2633 tokenbuf, tokenbuf);
2634 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2635 yylval.opval->op_private = OPpCONST_BARE;
2639 if (tmp < 0) { /* second-class keyword? */
2640 if (expect != XOPERATOR && (*s != ':' || s[1] != ':') &&
2641 (((gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2642 GvCVu(gv) && GvIMPORTED_CV(gv)) ||
2643 ((gvp = (GV**)hv_fetch(globalstash,tokenbuf,len,FALSE)) &&
2644 (gv = *gvp) != (GV*)&sv_undef &&
2645 GvCVu(gv) && GvIMPORTED_CV(gv))))
2647 tmp = 0; /* overridden by importation */
2650 && -tmp==KEY_lock /* XXX generalizable kludge */
2651 && !hv_fetch(GvHVn(incgv), "Thread.pm", 9, FALSE))
2653 tmp = 0; /* any sub overrides "weak" keyword */
2656 tmp = -tmp; gv = Nullgv; gvp = 0;
2663 default: /* not a keyword */
2666 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2668 /* Get the rest if it looks like a package qualifier */
2670 if (*s == '\'' || *s == ':' && s[1] == ':') {
2671 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2674 croak("Bad name after %s::", tokenbuf);
2677 if (expect == XOPERATOR) {
2678 if (bufptr == linestart) {
2684 no_op("Bareword",s);
2687 /* Look for a subroutine with this name in current package. */
2690 sv = newSVpv("CORE::GLOBAL::",14);
2691 sv_catpv(sv,tokenbuf);
2694 sv = newSVpv(tokenbuf,0);
2696 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2698 /* Presume this is going to be a bareword of some sort. */
2701 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
2702 yylval.opval->op_private = OPpCONST_BARE;
2704 /* See if it's the indirect object for a list operator. */
2707 oldoldbufptr < bufptr &&
2708 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2709 /* NO SKIPSPACE BEFORE HERE! */
2711 ((opargs[last_lop_op] >> OASHIFT)& 7) == OA_FILEREF) )
2713 bool immediate_paren = *s == '(';
2715 /* (Now we can afford to cross potential line boundary.) */
2718 /* Two barewords in a row may indicate method call. */
2720 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2723 /* If not a declared subroutine, it's an indirect object. */
2724 /* (But it's an indir obj regardless for sort.) */
2726 if ((last_lop_op == OP_SORT ||
2727 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2728 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2729 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2734 /* If followed by a paren, it's certainly a subroutine. */
2740 if (gv && GvCVu(gv)) {
2741 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2742 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2747 nextval[nexttoke].opval = yylval.opval;
2754 /* If followed by var or block, call it a method (unless sub) */
2756 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2757 last_lop = oldbufptr;
2758 last_lop_op = OP_METHOD;
2762 /* If followed by a bareword, see if it looks like indir obj. */
2764 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2767 /* Not a method, so call it a subroutine (if defined) */
2769 if (gv && GvCVu(gv)) {
2771 if (lastchar == '-')
2772 warn("Ambiguous use of -%s resolved as -&%s()",
2773 tokenbuf, tokenbuf);
2774 last_lop = oldbufptr;
2775 last_lop_op = OP_ENTERSUB;
2776 /* Check for a constant sub */
2778 if ((sv = cv_const_sv(cv))) {
2780 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2781 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2782 yylval.opval->op_private = 0;
2786 /* Resolve to GV now. */
2787 op_free(yylval.opval);
2788 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2789 /* Is there a prototype? */
2792 char *proto = SvPV((SV*)cv, len);
2795 if (strEQ(proto, "$"))
2797 if (*proto == '&' && *s == '{') {
2798 sv_setpv(subname,"__ANON__");
2802 nextval[nexttoke].opval = yylval.opval;
2808 if (hints & HINT_STRICT_SUBS &&
2811 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2812 last_lop_op != OP_ACCEPT &&
2813 last_lop_op != OP_PIPE_OP &&
2814 last_lop_op != OP_SOCKPAIR)
2817 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2822 /* Call it a bare word */
2826 if (lastchar != '-') {
2827 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2829 warn(warn_reserved, tokenbuf);
2832 if (lastchar && strchr("*%&", lastchar)) {
2833 warn("Operator or semicolon missing before %c%s",
2834 lastchar, tokenbuf);
2835 warn("Ambiguous use of %c resolved as operator %c",
2836 lastchar, lastchar);
2842 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2843 newSVsv(GvSV(curcop->cop_filegv)));
2847 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2848 newSVpvf("%ld", (long)curcop->cop_line));
2851 case KEY___PACKAGE__:
2852 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2854 ? newSVsv(curstname)
2863 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2864 char *pname = "main";
2865 if (tokenbuf[2] == 'D')
2866 pname = HvNAME(curstash ? curstash : defstash);
2867 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
2870 GvIOp(gv) = newIO();
2871 IoIFP(GvIOp(gv)) = rsfp;
2872 #if defined(HAS_FCNTL) && defined(F_SETFD)
2874 int fd = PerlIO_fileno(rsfp);
2875 fcntl(fd,F_SETFD,fd >= 3);
2878 /* Mark this internal pseudo-handle as clean */
2879 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2881 IoTYPE(GvIOp(gv)) = '|';
2882 else if ((PerlIO*)rsfp == PerlIO_stdin())
2883 IoTYPE(GvIOp(gv)) = '-';
2885 IoTYPE(GvIOp(gv)) = '<';
2896 if (expect == XSTATE) {
2903 if (*s == ':' && s[1] == ':') {
2906 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
2907 tmp = keyword(tokenbuf, len);
2921 LOP(OP_ACCEPT,XTERM);
2927 LOP(OP_ATAN2,XTERM);
2936 LOP(OP_BLESS,XTERM);
2945 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2965 LOP(OP_CRYPT,XTERM);
2969 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2970 if (*d != '0' && isDIGIT(*d))
2971 yywarn("chmod: mode argument is missing initial 0");
2973 LOP(OP_CHMOD,XTERM);
2976 LOP(OP_CHOWN,XTERM);
2979 LOP(OP_CONNECT,XTERM);
2995 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2999 hints |= HINT_BLOCK_SCOPE;
3009 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
3010 LOP(OP_DBMOPEN,XTERM);
3016 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3023 yylval.ival = curcop->cop_line;
3037 expect = (*s == '{') ? XTERMBLOCK : XTERM;
3038 UNIBRACK(OP_ENTEREVAL);
3053 case KEY_endhostent:
3059 case KEY_endservent:
3062 case KEY_endprotoent:
3073 yylval.ival = curcop->cop_line;
3075 if (isIDFIRST(*s)) {
3077 if ((bufend - p) >= 3 &&
3078 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
3082 croak("Missing $ on loop variable");
3087 LOP(OP_FORMLINE,XTERM);
3093 LOP(OP_FCNTL,XTERM);
3099 LOP(OP_FLOCK,XTERM);
3108 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
3111 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3126 case KEY_getpriority:
3127 LOP(OP_GETPRIORITY,XTERM);
3129 case KEY_getprotobyname:
3132 case KEY_getprotobynumber:
3133 LOP(OP_GPBYNUMBER,XTERM);
3135 case KEY_getprotoent:
3147 case KEY_getpeername:
3148 UNI(OP_GETPEERNAME);
3150 case KEY_gethostbyname:
3153 case KEY_gethostbyaddr:
3154 LOP(OP_GHBYADDR,XTERM);
3156 case KEY_gethostent:
3159 case KEY_getnetbyname:
3162 case KEY_getnetbyaddr:
3163 LOP(OP_GNBYADDR,XTERM);
3168 case KEY_getservbyname:
3169 LOP(OP_GSBYNAME,XTERM);
3171 case KEY_getservbyport:
3172 LOP(OP_GSBYPORT,XTERM);
3174 case KEY_getservent:
3177 case KEY_getsockname:
3178 UNI(OP_GETSOCKNAME);
3180 case KEY_getsockopt:
3181 LOP(OP_GSOCKOPT,XTERM);
3203 yylval.ival = curcop->cop_line;
3207 LOP(OP_INDEX,XTERM);
3213 LOP(OP_IOCTL,XTERM);
3225 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3256 LOP(OP_LISTEN,XTERM);
3266 TERM(sublex_start());
3269 LOP(OP_MAPSTART,XREF);
3272 LOP(OP_MKDIR,XTERM);
3275 LOP(OP_MSGCTL,XTERM);
3278 LOP(OP_MSGGET,XTERM);
3281 LOP(OP_MSGRCV,XTERM);
3284 LOP(OP_MSGSND,XTERM);
3289 if (isIDFIRST(*s)) {
3290 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
3291 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3295 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3302 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3309 if (expect != XSTATE)
3310 yyerror("\"no\" not allowed in expression");
3311 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3312 s = force_version(s);
3321 if (isIDFIRST(*s)) {
3323 for (d = s; isALNUM(*d); d++) ;
3325 if (strchr("|&*+-=!?:.", *t))
3326 warn("Precedence problem: open %.*s should be open(%.*s)",
3332 yylval.ival = OP_OR;
3342 LOP(OP_OPEN_DIR,XTERM);
3345 checkcomma(s,tokenbuf,"filehandle");
3349 checkcomma(s,tokenbuf,"filehandle");
3368 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3372 LOP(OP_PIPE_OP,XTERM);
3377 missingterm((char*)0);
3378 yylval.ival = OP_CONST;
3379 TERM(sublex_start());
3387 missingterm((char*)0);
3388 if (dowarn && SvLEN(lex_stuff)) {
3389 d = SvPV_force(lex_stuff, len);
3390 for (; len; --len, ++d) {
3392 warn("Possible attempt to separate words with commas");
3396 warn("Possible attempt to put comments in qw() list");
3402 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, tokeq(lex_stuff));
3406 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3409 yylval.ival = OP_SPLIT;
3413 last_lop = oldbufptr;
3414 last_lop_op = OP_SPLIT;
3420 missingterm((char*)0);
3421 yylval.ival = OP_STRINGIFY;
3422 if (SvIVX(lex_stuff) == '\'')
3423 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3424 TERM(sublex_start());
3429 missingterm((char*)0);
3430 yylval.ival = OP_BACKTICK;
3432 TERM(sublex_start());
3439 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3440 if (isIDFIRST(*tokenbuf))
3441 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3443 yyerror("<> should be quotes");
3450 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3454 LOP(OP_RENAME,XTERM);
3463 LOP(OP_RINDEX,XTERM);
3486 LOP(OP_REVERSE,XTERM);
3497 TERM(sublex_start());
3499 TOKEN(1); /* force error */
3508 LOP(OP_SELECT,XTERM);
3514 LOP(OP_SEMCTL,XTERM);
3517 LOP(OP_SEMGET,XTERM);
3520 LOP(OP_SEMOP,XTERM);
3526 LOP(OP_SETPGRP,XTERM);
3528 case KEY_setpriority:
3529 LOP(OP_SETPRIORITY,XTERM);
3531 case KEY_sethostent:
3537 case KEY_setservent:
3540 case KEY_setprotoent:
3550 LOP(OP_SEEKDIR,XTERM);
3552 case KEY_setsockopt:
3553 LOP(OP_SSOCKOPT,XTERM);
3559 LOP(OP_SHMCTL,XTERM);
3562 LOP(OP_SHMGET,XTERM);
3565 LOP(OP_SHMREAD,XTERM);
3568 LOP(OP_SHMWRITE,XTERM);
3571 LOP(OP_SHUTDOWN,XTERM);
3580 LOP(OP_SOCKET,XTERM);
3582 case KEY_socketpair:
3583 LOP(OP_SOCKPAIR,XTERM);
3586 checkcomma(s,tokenbuf,"subroutine name");
3588 if (*s == ';' || *s == ')') /* probably a close */
3589 croak("sort is now a reserved word");
3591 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3595 LOP(OP_SPLIT,XTERM);
3598 LOP(OP_SPRINTF,XTERM);
3601 LOP(OP_SPLICE,XTERM);
3617 LOP(OP_SUBSTR,XTERM);
3624 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3625 char tmpbuf[sizeof tokenbuf];
3627 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
3628 if (strchr(tmpbuf, ':'))
3629 sv_setpv(subname, tmpbuf);
3631 sv_setsv(subname,curstname);
3632 sv_catpvn(subname,"::",2);
3633 sv_catpvn(subname,tmpbuf,len);
3635 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3639 expect = XTERMBLOCK;
3640 sv_setpv(subname,"?");
3643 if (tmp == KEY_format) {
3646 lex_formbrack = lex_brackets + 1;
3650 /* Look for a prototype */
3657 SvREFCNT_dec(lex_stuff);
3659 croak("Prototype not terminated");
3662 d = SvPVX(lex_stuff);
3664 for (p = d; *p; ++p) {
3669 SvCUR(lex_stuff) = tmp;
3672 nextval[1] = nextval[0];
3673 nexttype[1] = nexttype[0];
3674 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3675 nexttype[0] = THING;
3676 if (nexttoke == 1) {
3677 lex_defer = lex_state;
3678 lex_expect = expect;
3679 lex_state = LEX_KNOWNEXT;
3684 if (*SvPV(subname,na) == '?') {
3685 sv_setpv(subname,"__ANON__");
3692 LOP(OP_SYSTEM,XREF);
3695 LOP(OP_SYMLINK,XTERM);
3698 LOP(OP_SYSCALL,XTERM);
3701 LOP(OP_SYSOPEN,XTERM);
3704 LOP(OP_SYSSEEK,XTERM);
3707 LOP(OP_SYSREAD,XTERM);
3710 LOP(OP_SYSWRITE,XTERM);
3714 TERM(sublex_start());
3735 LOP(OP_TRUNCATE,XTERM);
3747 yylval.ival = curcop->cop_line;
3751 yylval.ival = curcop->cop_line;
3755 LOP(OP_UNLINK,XTERM);
3761 LOP(OP_UNPACK,XTERM);
3764 LOP(OP_UTIME,XTERM);
3768 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3769 if (*d != '0' && isDIGIT(*d))
3770 yywarn("umask: argument is missing initial 0");
3775 LOP(OP_UNSHIFT,XTERM);
3778 if (expect != XSTATE)
3779 yyerror("\"use\" not allowed in expression");
3782 s = force_version(s);
3783 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3784 nextval[nexttoke].opval = Nullop;
3789 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3790 s = force_version(s);
3803 yylval.ival = curcop->cop_line;
3807 hints |= HINT_BLOCK_SCOPE;
3814 LOP(OP_WAITPID,XTERM);
3820 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3824 if (expect == XOPERATOR)
3830 yylval.ival = OP_XOR;
3835 TERM(sublex_start());
3841 keyword(register char *d, I32 len)
3846 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3847 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3848 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3849 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3850 if (strEQ(d,"__END__")) return KEY___END__;
3854 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3859 if (strEQ(d,"and")) return -KEY_and;
3860 if (strEQ(d,"abs")) return -KEY_abs;
3863 if (strEQ(d,"alarm")) return -KEY_alarm;
3864 if (strEQ(d,"atan2")) return -KEY_atan2;
3867 if (strEQ(d,"accept")) return -KEY_accept;
3872 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3875 if (strEQ(d,"bless")) return -KEY_bless;
3876 if (strEQ(d,"bind")) return -KEY_bind;
3877 if (strEQ(d,"binmode")) return -KEY_binmode;
3880 if (strEQ(d,"CORE")) return -KEY_CORE;
3885 if (strEQ(d,"cmp")) return -KEY_cmp;
3886 if (strEQ(d,"chr")) return -KEY_chr;
3887 if (strEQ(d,"cos")) return -KEY_cos;
3890 if (strEQ(d,"chop")) return KEY_chop;
3893 if (strEQ(d,"close")) return -KEY_close;
3894 if (strEQ(d,"chdir")) return -KEY_chdir;
3895 if (strEQ(d,"chomp")) return KEY_chomp;
3896 if (strEQ(d,"chmod")) return -KEY_chmod;
3897 if (strEQ(d,"chown")) return -KEY_chown;
3898 if (strEQ(d,"crypt")) return -KEY_crypt;
3901 if (strEQ(d,"chroot")) return -KEY_chroot;
3902 if (strEQ(d,"caller")) return -KEY_caller;
3905 if (strEQ(d,"connect")) return -KEY_connect;
3908 if (strEQ(d,"closedir")) return -KEY_closedir;
3909 if (strEQ(d,"continue")) return -KEY_continue;
3914 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3919 if (strEQ(d,"do")) return KEY_do;
3922 if (strEQ(d,"die")) return -KEY_die;
3925 if (strEQ(d,"dump")) return -KEY_dump;
3928 if (strEQ(d,"delete")) return KEY_delete;
3931 if (strEQ(d,"defined")) return KEY_defined;
3932 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3935 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3940 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3941 if (strEQ(d,"END")) return KEY_END;
3946 if (strEQ(d,"eq")) return -KEY_eq;
3949 if (strEQ(d,"eof")) return -KEY_eof;
3950 if (strEQ(d,"exp")) return -KEY_exp;
3953 if (strEQ(d,"else")) return KEY_else;
3954 if (strEQ(d,"exit")) return -KEY_exit;
3955 if (strEQ(d,"eval")) return KEY_eval;
3956 if (strEQ(d,"exec")) return -KEY_exec;
3957 if (strEQ(d,"each")) return KEY_each;
3960 if (strEQ(d,"elsif")) return KEY_elsif;
3963 if (strEQ(d,"exists")) return KEY_exists;
3964 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3967 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3968 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3971 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3974 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3975 if (strEQ(d,"endservent")) return -KEY_endservent;
3978 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3985 if (strEQ(d,"for")) return KEY_for;
3988 if (strEQ(d,"fork")) return -KEY_fork;
3991 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3992 if (strEQ(d,"flock")) return -KEY_flock;
3995 if (strEQ(d,"format")) return KEY_format;
3996 if (strEQ(d,"fileno")) return -KEY_fileno;
3999 if (strEQ(d,"foreach")) return KEY_foreach;
4002 if (strEQ(d,"formline")) return -KEY_formline;
4008 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
4009 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
4013 if (strnEQ(d,"get",3)) {
4018 if (strEQ(d,"ppid")) return -KEY_getppid;
4019 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
4022 if (strEQ(d,"pwent")) return -KEY_getpwent;
4023 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
4024 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
4027 if (strEQ(d,"peername")) return -KEY_getpeername;
4028 if (strEQ(d,"protoent")) return -KEY_getprotoent;
4029 if (strEQ(d,"priority")) return -KEY_getpriority;
4032 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
4035 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
4039 else if (*d == 'h') {
4040 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
4041 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
4042 if (strEQ(d,"hostent")) return -KEY_gethostent;
4044 else if (*d == 'n') {
4045 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
4046 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
4047 if (strEQ(d,"netent")) return -KEY_getnetent;
4049 else if (*d == 's') {
4050 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
4051 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
4052 if (strEQ(d,"servent")) return -KEY_getservent;
4053 if (strEQ(d,"sockname")) return -KEY_getsockname;
4054 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
4056 else if (*d == 'g') {
4057 if (strEQ(d,"grent")) return -KEY_getgrent;
4058 if (strEQ(d,"grnam")) return -KEY_getgrnam;
4059 if (strEQ(d,"grgid")) return -KEY_getgrgid;
4061 else if (*d == 'l') {
4062 if (strEQ(d,"login")) return -KEY_getlogin;
4064 else if (strEQ(d,"c")) return -KEY_getc;
4069 if (strEQ(d,"gt")) return -KEY_gt;
4070 if (strEQ(d,"ge")) return -KEY_ge;
4073 if (strEQ(d,"grep")) return KEY_grep;
4074 if (strEQ(d,"goto")) return KEY_goto;
4075 if (strEQ(d,"glob")) return KEY_glob;
4078 if (strEQ(d,"gmtime")) return -KEY_gmtime;
4083 if (strEQ(d,"hex")) return -KEY_hex;
4086 if (strEQ(d,"INIT")) return KEY_INIT;
4091 if (strEQ(d,"if")) return KEY_if;
4094 if (strEQ(d,"int")) return -KEY_int;
4097 if (strEQ(d,"index")) return -KEY_index;
4098 if (strEQ(d,"ioctl")) return -KEY_ioctl;
4103 if (strEQ(d,"join")) return -KEY_join;
4107 if (strEQ(d,"keys")) return KEY_keys;
4108 if (strEQ(d,"kill")) return -KEY_kill;
4113 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4114 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
4120 if (strEQ(d,"lt")) return -KEY_lt;
4121 if (strEQ(d,"le")) return -KEY_le;
4122 if (strEQ(d,"lc")) return -KEY_lc;
4125 if (strEQ(d,"log")) return -KEY_log;
4128 if (strEQ(d,"last")) return KEY_last;
4129 if (strEQ(d,"link")) return -KEY_link;
4130 if (strEQ(d,"lock")) return -KEY_lock;
4133 if (strEQ(d,"local")) return KEY_local;
4134 if (strEQ(d,"lstat")) return -KEY_lstat;
4137 if (strEQ(d,"length")) return -KEY_length;
4138 if (strEQ(d,"listen")) return -KEY_listen;
4141 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
4144 if (strEQ(d,"localtime")) return -KEY_localtime;
4150 case 1: return KEY_m;
4152 if (strEQ(d,"my")) return KEY_my;
4155 if (strEQ(d,"map")) return KEY_map;
4158 if (strEQ(d,"mkdir")) return -KEY_mkdir;
4161 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4162 if (strEQ(d,"msgget")) return -KEY_msgget;
4163 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4164 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
4169 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
4172 if (strEQ(d,"next")) return KEY_next;
4173 if (strEQ(d,"ne")) return -KEY_ne;
4174 if (strEQ(d,"not")) return -KEY_not;
4175 if (strEQ(d,"no")) return KEY_no;
4180 if (strEQ(d,"or")) return -KEY_or;
4183 if (strEQ(d,"ord")) return -KEY_ord;
4184 if (strEQ(d,"oct")) return -KEY_oct;
4187 if (strEQ(d,"open")) return -KEY_open;
4190 if (strEQ(d,"opendir")) return -KEY_opendir;
4197 if (strEQ(d,"pop")) return KEY_pop;
4198 if (strEQ(d,"pos")) return KEY_pos;
4201 if (strEQ(d,"push")) return KEY_push;
4202 if (strEQ(d,"pack")) return -KEY_pack;
4203 if (strEQ(d,"pipe")) return -KEY_pipe;
4206 if (strEQ(d,"print")) return KEY_print;
4209 if (strEQ(d,"printf")) return KEY_printf;
4212 if (strEQ(d,"package")) return KEY_package;
4215 if (strEQ(d,"prototype")) return KEY_prototype;
4220 if (strEQ(d,"q")) return KEY_q;
4221 if (strEQ(d,"qq")) return KEY_qq;
4222 if (strEQ(d,"qw")) return KEY_qw;
4223 if (strEQ(d,"qx")) return KEY_qx;
4225 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4230 if (strEQ(d,"ref")) return -KEY_ref;
4233 if (strEQ(d,"read")) return -KEY_read;
4234 if (strEQ(d,"rand")) return -KEY_rand;
4235 if (strEQ(d,"recv")) return -KEY_recv;
4236 if (strEQ(d,"redo")) return KEY_redo;
4239 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4240 if (strEQ(d,"reset")) return -KEY_reset;
4243 if (strEQ(d,"return")) return KEY_return;
4244 if (strEQ(d,"rename")) return -KEY_rename;
4245 if (strEQ(d,"rindex")) return -KEY_rindex;
4248 if (strEQ(d,"require")) return -KEY_require;
4249 if (strEQ(d,"reverse")) return -KEY_reverse;
4250 if (strEQ(d,"readdir")) return -KEY_readdir;
4253 if (strEQ(d,"readlink")) return -KEY_readlink;
4254 if (strEQ(d,"readline")) return -KEY_readline;
4255 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4258 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4264 case 0: return KEY_s;
4266 if (strEQ(d,"scalar")) return KEY_scalar;
4271 if (strEQ(d,"seek")) return -KEY_seek;
4272 if (strEQ(d,"send")) return -KEY_send;
4275 if (strEQ(d,"semop")) return -KEY_semop;
4278 if (strEQ(d,"select")) return -KEY_select;
4279 if (strEQ(d,"semctl")) return -KEY_semctl;
4280 if (strEQ(d,"semget")) return -KEY_semget;
4283 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4284 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4287 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4288 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4291 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4294 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4295 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4296 if (strEQ(d,"setservent")) return -KEY_setservent;
4299 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4300 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4307 if (strEQ(d,"shift")) return KEY_shift;
4310 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4311 if (strEQ(d,"shmget")) return -KEY_shmget;
4314 if (strEQ(d,"shmread")) return -KEY_shmread;
4317 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4318 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4323 if (strEQ(d,"sin")) return -KEY_sin;
4326 if (strEQ(d,"sleep")) return -KEY_sleep;
4329 if (strEQ(d,"sort")) return KEY_sort;
4330 if (strEQ(d,"socket")) return -KEY_socket;
4331 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4334 if (strEQ(d,"split")) return KEY_split;
4335 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4336 if (strEQ(d,"splice")) return KEY_splice;
4339 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4342 if (strEQ(d,"srand")) return -KEY_srand;
4345 if (strEQ(d,"stat")) return -KEY_stat;
4346 if (strEQ(d,"study")) return KEY_study;
4349 if (strEQ(d,"substr")) return -KEY_substr;
4350 if (strEQ(d,"sub")) return KEY_sub;
4355 if (strEQ(d,"system")) return -KEY_system;
4358 if (strEQ(d,"symlink")) return -KEY_symlink;
4359 if (strEQ(d,"syscall")) return -KEY_syscall;
4360 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4361 if (strEQ(d,"sysread")) return -KEY_sysread;
4362 if (strEQ(d,"sysseek")) return -KEY_sysseek;
4365 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4374 if (strEQ(d,"tr")) return KEY_tr;
4377 if (strEQ(d,"tie")) return KEY_tie;
4380 if (strEQ(d,"tell")) return -KEY_tell;
4381 if (strEQ(d,"tied")) return KEY_tied;
4382 if (strEQ(d,"time")) return -KEY_time;
4385 if (strEQ(d,"times")) return -KEY_times;
4388 if (strEQ(d,"telldir")) return -KEY_telldir;
4391 if (strEQ(d,"truncate")) return -KEY_truncate;
4398 if (strEQ(d,"uc")) return -KEY_uc;
4401 if (strEQ(d,"use")) return KEY_use;
4404 if (strEQ(d,"undef")) return KEY_undef;
4405 if (strEQ(d,"until")) return KEY_until;
4406 if (strEQ(d,"untie")) return KEY_untie;
4407 if (strEQ(d,"utime")) return -KEY_utime;
4408 if (strEQ(d,"umask")) return -KEY_umask;
4411 if (strEQ(d,"unless")) return KEY_unless;
4412 if (strEQ(d,"unpack")) return -KEY_unpack;
4413 if (strEQ(d,"unlink")) return -KEY_unlink;
4416 if (strEQ(d,"unshift")) return KEY_unshift;
4417 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4422 if (strEQ(d,"values")) return -KEY_values;
4423 if (strEQ(d,"vec")) return -KEY_vec;
4428 if (strEQ(d,"warn")) return -KEY_warn;
4429 if (strEQ(d,"wait")) return -KEY_wait;
4432 if (strEQ(d,"while")) return KEY_while;
4433 if (strEQ(d,"write")) return -KEY_write;
4436 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4439 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4444 if (len == 1) return -KEY_x;
4445 if (strEQ(d,"xor")) return -KEY_xor;
4448 if (len == 1) return KEY_y;
4457 checkcomma(register char *s, char *name, char *what)
4461 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4463 for (w = s+2; *w && level; w++) {
4470 for (; *w && isSPACE(*w); w++) ;
4471 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
4472 warn("%s (...) interpreted as function",name);
4474 while (s < bufend && isSPACE(*s))
4478 while (s < bufend && isSPACE(*s))
4480 if (isIDFIRST(*s)) {
4484 while (s < bufend && isSPACE(*s))
4489 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4493 croak("No comma allowed after %s", what);
4499 scan_word(register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp)
4501 register char *d = dest;
4502 register char *e = d + destlen - 3; /* two-character token, ending NUL */
4505 croak(ident_too_long);
4508 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4513 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4526 scan_ident(register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni)
4533 if (lex_brackets == 0)
4538 e = d + destlen - 3; /* two-character token, ending NUL */
4540 while (isDIGIT(*s)) {
4542 croak(ident_too_long);
4549 croak(ident_too_long);
4552 else if (*s == '\'' && isIDFIRST(s[1])) {
4557 else if (*s == ':' && s[1] == ':') {
4568 if (lex_state != LEX_NORMAL)
4569 lex_state = LEX_INTERPENDMAYBE;
4572 if (*s == '$' && s[1] &&
4573 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4575 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4576 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4589 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4594 if (isSPACE(s[-1])) {
4597 if (ch != ' ' && ch != '\t') {
4603 if (isIDFIRST(*d)) {
4605 while (isALNUM(*s) || *s == ':')
4608 while (s < send && (*s == ' ' || *s == '\t')) s++;
4609 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4610 if (dowarn && keyword(dest, d - dest)) {
4611 char *brack = *s == '[' ? "[...]" : "{...}";
4612 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4613 funny, dest, brack, funny, dest, brack);
4615 lex_fakebrack = lex_brackets+1;
4617 lex_brackstack[lex_brackets++] = XOPERATOR;
4623 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4624 lex_state = LEX_INTERPEND;
4627 if (dowarn && lex_state == LEX_NORMAL &&
4628 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4629 warn("Ambiguous use of %c{%s} resolved to %c%s",
4630 funny, dest, funny, dest);
4633 s = bracket; /* let the parser handle it */
4637 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4638 lex_state = LEX_INTERPEND;
4642 void pmflag(U16 *pmfl, int ch)
4647 *pmfl |= PMf_GLOBAL;
4649 *pmfl |= PMf_CONTINUE;
4653 *pmfl |= PMf_MULTILINE;
4655 *pmfl |= PMf_SINGLELINE;
4657 *pmfl |= PMf_EXTENDED;
4661 scan_pat(char *start)
4666 s = scan_str(start);
4669 SvREFCNT_dec(lex_stuff);
4671 croak("Search pattern not terminated");
4674 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4675 if (multi_open == '?')
4676 pm->op_pmflags |= PMf_ONCE;
4677 while (*s && strchr("iogcmsx", *s))
4678 pmflag(&pm->op_pmflags,*s++);
4679 pm->op_pmpermflags = pm->op_pmflags;
4682 yylval.ival = OP_MATCH;
4687 scan_subst(char *start)
4694 yylval.ival = OP_NULL;
4696 s = scan_str(start);
4700 SvREFCNT_dec(lex_stuff);
4702 croak("Substitution pattern not terminated");
4705 if (s[-1] == multi_open)
4708 first_start = multi_start;
4712 SvREFCNT_dec(lex_stuff);
4715 SvREFCNT_dec(lex_repl);
4717 croak("Substitution replacement not terminated");
4719 multi_start = first_start; /* so whole substitution is taken together */
4721 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4722 while (*s && strchr("iogcmsex", *s)) {
4728 pmflag(&pm->op_pmflags,*s++);
4733 pm->op_pmflags |= PMf_EVAL;
4734 repl = newSVpv("",0);
4736 sv_catpv(repl, es ? "eval " : "do ");
4737 sv_catpvn(repl, "{ ", 2);
4738 sv_catsv(repl, lex_repl);
4739 sv_catpvn(repl, " };", 2);
4740 SvCOMPILED_on(repl);
4741 SvREFCNT_dec(lex_repl);
4745 pm->op_pmpermflags = pm->op_pmflags;
4747 yylval.ival = OP_SUBST;
4752 scan_trans(char *start)
4761 yylval.ival = OP_NULL;
4763 s = scan_str(start);
4766 SvREFCNT_dec(lex_stuff);
4768 croak("Translation pattern not terminated");
4770 if (s[-1] == multi_open)
4776 SvREFCNT_dec(lex_stuff);
4779 SvREFCNT_dec(lex_repl);
4781 croak("Translation replacement not terminated");
4784 New(803,tbl,256,short);
4785 o = newPVOP(OP_TRANS, 0, (char*)tbl);
4787 complement = Delete = squash = 0;
4788 while (*s == 'c' || *s == 'd' || *s == 's') {
4790 complement = OPpTRANS_COMPLEMENT;
4792 Delete = OPpTRANS_DELETE;
4794 squash = OPpTRANS_SQUASH;
4797 o->op_private = Delete|squash|complement;
4800 yylval.ival = OP_TRANS;
4805 scan_heredoc(register char *s)
4809 I32 op_type = OP_SCALAR;
4816 int outer = (rsfp && !lex_inwhat);
4820 e = tokenbuf + sizeof tokenbuf - 1;
4823 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4824 if (*peek && strchr("`'\"",*peek)) {
4827 s = delimcpy(d, e, s, bufend, term, &len);
4838 deprecate("bare << to mean <<\"\"");
4839 for (; isALNUM(*s); s++) {
4844 if (d >= tokenbuf + sizeof tokenbuf - 1)
4845 croak("Delimiter for here document is too long");
4850 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4851 herewas = newSVpv(s,bufend-s);
4853 s--, herewas = newSVpv(s,d-s);
4854 s += SvCUR(herewas);
4856 tmpstr = NEWSV(87,80);
4857 sv_upgrade(tmpstr, SVt_PVIV);
4862 else if (term == '`') {
4863 op_type = OP_BACKTICK;
4864 SvIVX(tmpstr) = '\\';
4868 multi_start = curcop->cop_line;
4869 multi_open = multi_close = '<';
4873 while (s < bufend &&
4874 (*s != term || memNE(s,tokenbuf,len)) ) {
4879 curcop->cop_line = multi_start;
4880 missingterm(tokenbuf);
4882 sv_setpvn(tmpstr,d+1,s-d);
4884 curcop->cop_line++; /* the preceding stmt passes a newline */
4886 sv_catpvn(herewas,s,bufend-s);
4887 sv_setsv(linestr,herewas);
4888 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4889 bufend = SvPVX(linestr) + SvCUR(linestr);
4892 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4893 while (s >= bufend) { /* multiple line string? */
4895 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4896 curcop->cop_line = multi_start;
4897 missingterm(tokenbuf);
4900 if (PERLDB_LINE && curstash != debstash) {
4901 SV *sv = NEWSV(88,0);
4903 sv_upgrade(sv, SVt_PVMG);
4904 sv_setsv(sv,linestr);
4905 av_store(GvAV(curcop->cop_filegv),
4906 (I32)curcop->cop_line,sv);
4908 bufend = SvPVX(linestr) + SvCUR(linestr);
4909 if (*s == term && memEQ(s,tokenbuf,len)) {
4912 sv_catsv(linestr,herewas);
4913 bufend = SvPVX(linestr) + SvCUR(linestr);
4917 sv_catsv(tmpstr,linestr);
4920 multi_end = curcop->cop_line;
4922 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4923 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4924 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4926 SvREFCNT_dec(herewas);
4928 yylval.ival = op_type;
4933 scan_inputsymbol(char *start)
4935 register char *s = start;
4941 e = tokenbuf + sizeof tokenbuf;
4942 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4943 if (len >= sizeof tokenbuf)
4944 croak("Excessively long <> operator");
4946 croak("Unterminated <> operator");
4948 if (*d == '$' && d[1]) d++;
4949 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4951 if (d - tokenbuf != len) {
4952 yylval.ival = OP_GLOB;
4954 s = scan_str(start);
4956 croak("Glob not terminated");
4962 (void)strcpy(d,"ARGV");
4965 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4966 OP *o = newOP(OP_PADSV, 0);
4968 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
4971 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4972 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4973 newUNOP(OP_RV2GV, 0,
4974 newUNOP(OP_RV2SV, 0,
4975 newGVOP(OP_GV, 0, gv))));
4977 yylval.ival = OP_NULL;
4980 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4981 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4982 yylval.ival = OP_NULL;
4989 scan_str(char *start)
4994 register char *s = start;
5003 multi_start = curcop->cop_line;
5005 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
5010 sv_upgrade(sv, SVt_PVIV);
5012 (void)SvPOK_only(sv); /* validate pointer */
5015 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
5016 to = SvPVX(sv)+SvCUR(sv);
5017 if (multi_open == multi_close) {
5018 for (; s < bufend; s++,to++) {
5019 if (*s == '\n' && !rsfp)
5021 if (*s == '\\' && s+1 < bufend && term != '\\') {
5027 else if (*s == term)
5033 for (; s < bufend; s++,to++) {
5034 if (*s == '\n' && !rsfp)
5036 if (*s == '\\' && s+1 < bufend) {
5037 if ((s[1] == multi_open) || (s[1] == multi_close))
5042 else if (*s == multi_close && --brackets <= 0)
5044 else if (*s == multi_open)
5050 SvCUR_set(sv, to - SvPVX(sv));
5052 if (s < bufend) break; /* string ends on this line? */
5055 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
5057 curcop->cop_line = multi_start;
5061 if (PERLDB_LINE && curstash != debstash) {
5062 SV *sv = NEWSV(88,0);
5064 sv_upgrade(sv, SVt_PVMG);
5065 sv_setsv(sv,linestr);
5066 av_store(GvAV(curcop->cop_filegv),
5067 (I32)curcop->cop_line, sv);
5069 bufend = SvPVX(linestr) + SvCUR(linestr);
5071 multi_end = curcop->cop_line;
5073 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5074 SvLEN_set(sv, SvCUR(sv) + 1);
5075 Renew(SvPVX(sv), SvLEN(sv), char);
5085 scan_num(char *start)
5087 register char *s = start;
5095 static char number_too_long[] = "Number too long";
5099 croak("panic: scan_num");
5104 bool overflowed = FALSE;
5110 else if (s[1] == '.')
5126 yyerror("Illegal octal digit");
5128 case '0': case '1': case '2': case '3': case '4':
5129 case '5': case '6': case '7':
5132 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5133 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5139 if (!overflowed && (n >> shift) != u) {
5140 warn("Integer overflow in %s number",
5141 (shift == 4) ? "hex" : "octal");
5153 case '1': case '2': case '3': case '4': case '5':
5154 case '6': case '7': case '8': case '9': case '.':
5157 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
5159 while (isDIGIT(*s) || *s == '_') {
5161 if (dowarn && lastub && s - lastub != 3)
5162 warn("Misplaced _ in number");
5167 croak(number_too_long);
5171 if (dowarn && lastub && s - lastub != 3)
5172 warn("Misplaced _ in number");
5173 if (*s == '.' && s[1] != '.') {
5176 for (; isDIGIT(*s) || *s == '_'; s++) {
5178 croak(number_too_long);
5183 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5186 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5187 if (*s == '+' || *s == '-')
5189 while (isDIGIT(*s)) {
5191 croak(number_too_long);
5197 SET_NUMERIC_STANDARD();
5198 value = atof(tokenbuf);
5200 if (!floatit && (double)tryiv == value)
5201 sv_setiv(sv, tryiv);
5203 sv_setnv(sv, value);
5207 yylval.opval = newSVOP(OP_CONST, 0, sv);
5213 scan_formline(register char *s)
5218 SV *stuff = newSVpv("",0);
5219 bool needargs = FALSE;
5222 if (*s == '.' || *s == '}') {
5224 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5228 if (in_eval && !rsfp) {
5229 eol = strchr(s,'\n');
5234 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5236 for (t = s; t < eol; t++) {
5237 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5239 goto enough; /* ~~ must be first line in formline */
5241 if (*t == '@' || *t == '^')
5244 sv_catpvn(stuff, s, eol-s);
5248 s = filter_gets(linestr, rsfp, 0);
5249 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5250 bufend = bufptr + SvCUR(linestr);
5253 yyerror("Format not terminated");
5263 lex_state = LEX_NORMAL;
5264 nextval[nexttoke].ival = 0;
5268 lex_state = LEX_FORMLINE;
5269 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5271 nextval[nexttoke].ival = OP_FORMLINE;
5275 SvREFCNT_dec(stuff);
5287 cshlen = strlen(cshname);
5292 start_subparse(I32 is_format, U32 flags)
5295 I32 oldsavestack_ix = savestack_ix;
5296 CV* outsidecv = compcv;
5300 assert(SvTYPE(compcv) == SVt_PVCV);
5307 SAVESPTR(comppad_name);
5309 SAVEI32(comppad_name_fill);
5310 SAVEI32(min_intro_pending);
5311 SAVEI32(max_intro_pending);
5312 SAVEI32(pad_reset_pending);
5314 compcv = (CV*)NEWSV(1104,0);
5315 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5316 CvFLAGS(compcv) |= flags;
5319 av_push(comppad, Nullsv);
5320 curpad = AvARRAY(comppad);
5321 comppad_name = newAV();
5322 comppad_name_fill = 0;
5323 min_intro_pending = 0;
5325 subline = curcop->cop_line;
5327 av_store(comppad_name, 0, newSVpv("@_", 2));
5328 curpad[0] = (SV*)newAV();
5329 SvPADMY_on(curpad[0]); /* XXX Needed? */
5330 CvOWNER(compcv) = 0;
5331 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5332 MUTEX_INIT(CvMUTEXP(compcv));
5333 #endif /* USE_THREADS */
5335 comppadlist = newAV();
5336 AvREAL_off(comppadlist);
5337 av_store(comppadlist, 0, (SV*)comppad_name);
5338 av_store(comppadlist, 1, (SV*)comppad);
5340 CvPADLIST(compcv) = comppadlist;
5341 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc(outsidecv);
5343 CvOWNER(compcv) = 0;
5344 New(666, CvMUTEXP(compcv), 1, perl_mutex);
5345 MUTEX_INIT(CvMUTEXP(compcv));
5346 #endif /* USE_THREADS */
5348 return oldsavestack_ix;
5367 char *context = NULL;
5371 if (!yychar || (yychar == ';' && !rsfp))
5373 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5374 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5375 while (isSPACE(*oldoldbufptr))
5377 context = oldoldbufptr;
5378 contlen = bufptr - oldoldbufptr;
5380 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5381 oldbufptr != bufptr) {
5382 while (isSPACE(*oldbufptr))
5384 context = oldbufptr;
5385 contlen = bufptr - oldbufptr;
5387 else if (yychar > 255)
5388 where = "next token ???";
5389 else if ((yychar & 127) == 127) {
5390 if (lex_state == LEX_NORMAL ||
5391 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5392 where = "at end of line";
5394 where = "within pattern";
5396 where = "within string";
5399 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5401 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5402 else if (isPRINT_LC(yychar))
5403 sv_catpvf(where_sv, "%c", yychar);
5405 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5406 where = SvPVX(where_sv);
5408 msg = sv_2mortal(newSVpv(s, 0));
5409 sv_catpvf(msg, " at %_ line %ld, ",
5410 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
5412 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
5414 sv_catpvf(msg, "%s\n", where);
5415 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5417 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5418 (int)multi_open,(int)multi_close,(long)multi_start);
5424 sv_catsv(ERRSV, msg);
5426 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
5427 if (++error_count >= 10)
5428 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
5430 in_my_stash = Nullhv;