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, I32 ck_uni));
26 static char *scan_inputsymbol _((char *start));
27 static char *scan_pat _((char *start));
28 static char *scan_str _((char *start));
29 static char *scan_subst _((char *start));
30 static char *scan_trans _((char *start));
31 static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
32 static char *skipspace _((char *s));
33 static void checkcomma _((char *s, char *name, char *what));
34 static void force_ident _((char *s, int kind));
35 static void incline _((char *s));
36 static int intuit_method _((char *s, GV *gv));
37 static int intuit_more _((char *s));
38 static I32 lop _((I32 f, expectation x, char *s));
39 static void missingterm _((char *s));
40 static void no_op _((char *what, char *s));
41 static void set_csh _((void));
42 static I32 sublex_done _((void));
43 static I32 sublex_push _((void));
44 static I32 sublex_start _((void));
46 static int uni _((I32 f, char *s));
48 static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
49 static void restore_rsfp _((void *f));
51 static char *linestart; /* beg. of most recently read line */
53 static char pending_ident; /* pending identifier lookup */
56 I32 super_state; /* lexer state to save */
57 I32 sub_inwhat; /* "lex_inwhat" to use */
58 OP *sub_op; /* "lex_op" to use */
61 /* The following are arranged oddly so that the guard on the switch statement
62 * can get by with a single comparison (if the compiler is smart enough).
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)
144 if (*bufptr == '=') {
146 if (toketype == ANDAND)
147 yylval.ival = OP_ANDASSIGN;
148 else if (toketype == OROR)
149 yylval.ival = OP_ORASSIGN;
160 char *oldbp = bufptr;
161 bool is_first = (oldbufptr == linestart);
165 New(890, msg, strlen(what) + 40, char);
166 sprintf(msg, "%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 ? ";}continue{print" : "");
373 sv_catpv(linestr,";}");
374 minus_n = minus_p = 0;
377 sv_setpv(linestr,";");
378 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
379 bufend = SvPVX(linestr) + SvCUR(linestr);
380 if (preprocess && !in_eval)
381 (void)my_pclose(rsfp);
382 else if ((PerlIO*)rsfp == PerlIO_stdin())
383 PerlIO_clearerr(rsfp);
385 (void)PerlIO_close(rsfp);
389 linestart = bufptr = s + prevlen;
390 bufend = s + SvCUR(linestr);
393 if (perldb && curstash != debstash) {
394 SV *sv = NEWSV(85,0);
396 sv_upgrade(sv, SVt_PVMG);
397 sv_setpvn(sv,bufptr,bufend-bufptr);
398 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
409 if (oldoldbufptr != last_uni)
411 while (isSPACE(*last_uni))
413 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
414 if ((t = strchr(s, '(')) && t < bufptr)
418 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
425 #define UNI(f) return uni(f,s)
435 last_uni = oldbufptr;
446 #endif /* CRIPPLED_CC */
448 #define LOP(f,x) return lop(f,x,s)
453 (I32 f, expectation x, char *s)
459 #endif /* CAN_PROTOTYPE */
465 last_lop = oldbufptr;
482 nexttype[nexttoke] = type;
484 if (lex_state != LEX_KNOWNEXT) {
485 lex_defer = lex_state;
487 lex_state = LEX_KNOWNEXT;
492 force_word(start,token,check_keyword,allow_pack,allow_tick)
493 register char *start;
502 start = skipspace(start);
505 (allow_pack && *s == ':') ||
506 (allow_tick && *s == '\'') )
508 s = scan_word(s, tokenbuf, allow_pack, &len);
509 if (check_keyword && keyword(tokenbuf, len))
511 if (token == METHOD) {
521 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
522 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
534 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
535 nextval[nexttoke].opval = op;
538 op->op_private = OPpCONST_ENTERED;
539 /* XXX see note in pp_entereval() for why we forgo typo
540 warnings if the symbol must be introduced in an eval.
542 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
543 kind == '$' ? SVt_PV :
544 kind == '@' ? SVt_PVAV :
545 kind == '%' ? SVt_PVHV :
556 OP *version = Nullop;
560 /* default VERSION number -- GBARR */
565 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
566 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
568 /* real VERSION number -- GBARR */
569 version = yylval.opval;
573 /* NOTE: The parser sees the package name and the VERSION swapped */
574 nextval[nexttoke].opval = version;
592 s = SvPV_force(sv, len);
596 while (s < send && *s != '\\')
603 if (s + 1 < send && (s[1] == '\\'))
604 s++; /* all that, just for this */
609 SvCUR_set(sv, d - SvPVX(sv));
617 register I32 op_type = yylval.ival;
619 if (op_type == OP_NULL) {
620 yylval.opval = lex_op;
624 if (op_type == OP_CONST || op_type == OP_READLINE) {
625 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
630 sublex_info.super_state = lex_state;
631 sublex_info.sub_inwhat = op_type;
632 sublex_info.sub_op = lex_op;
633 lex_state = LEX_INTERPPUSH;
637 yylval.opval = lex_op;
650 lex_state = sublex_info.super_state;
652 SAVEI32(lex_brackets);
653 SAVEI32(lex_fakebrack);
654 SAVEI32(lex_casemods);
659 SAVEI16(curcop->cop_line);
662 SAVEPPTR(oldoldbufptr);
665 SAVEPPTR(lex_brackstack);
666 SAVEPPTR(lex_casestack);
671 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
672 bufend += SvCUR(linestr);
678 New(899, lex_brackstack, 120, char);
679 New(899, lex_casestack, 12, char);
680 SAVEFREEPV(lex_brackstack);
681 SAVEFREEPV(lex_casestack);
683 *lex_casestack = '\0';
685 lex_state = LEX_INTERPCONCAT;
686 curcop->cop_line = multi_start;
688 lex_inwhat = sublex_info.sub_inwhat;
689 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
690 lex_inpat = sublex_info.sub_op;
702 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
706 if (lex_casemods) { /* oops, we've got some unbalanced parens */
707 lex_state = LEX_INTERPCASEMOD;
711 /* Is there a right-hand side to take care of? */
712 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
715 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
716 bufend += SvCUR(linestr);
722 *lex_casestack = '\0';
724 if (SvCOMPILED(lex_repl)) {
725 lex_state = LEX_INTERPNORMAL;
729 lex_state = LEX_INTERPCONCAT;
735 bufend = SvPVX(linestr);
736 bufend += SvCUR(linestr);
746 register char *send = bufend;
747 SV *sv = NEWSV(93, send - start);
748 register char *s = start;
749 register char *d = SvPVX(sv);
750 bool dorange = FALSE;
754 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
755 : (lex_inwhat & OP_TRANS)
759 while (s < send || dorange) {
760 if (lex_inwhat == OP_TRANS) {
765 SvGROW(sv, SvLEN(sv) + 256);
769 for (i = (U8)*d; i <= max; i++)
774 else if (*s == '-' && s+1 < send && s != start) {
779 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
780 while (s < send && *s != ')')
783 else if (*s == '#' && lex_inpat &&
784 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
785 while (s+1 < send && *s != '\n')
788 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
790 else if (*s == '$') {
791 if (!lex_inpat) /* not a regexp, so $ must be var */
793 if (s + 1 < send && !strchr(")| \n\t", s[1]))
794 break; /* in regexp, $ might be tail anchor */
796 if (*s == '\\' && s+1 < send) {
798 if (*s && strchr(leave, *s)) {
803 if (lex_inwhat == OP_SUBST && !lex_inpat &&
804 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
807 warn("\\%c better written as $%c", *s, *s);
811 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
817 if (lex_inwhat == OP_TRANS) {
825 case '0': case '1': case '2': case '3':
826 case '4': case '5': case '6': case '7':
827 *d++ = scan_oct(s, 3, &len);
831 *d++ = scan_hex(++s, 2, &len);
867 SvCUR_set(sv, d - SvPVX(sv));
870 if (SvCUR(sv) + 5 < SvLEN(sv)) {
871 SvLEN_set(sv, SvCUR(sv) + 1);
872 Renew(SvPVX(sv), SvLEN(sv), char);
875 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
881 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
888 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
890 if (*s != '{' && *s != '[')
895 /* In a pattern, so maybe we have {n,m}. */
912 /* On the other hand, maybe we have a character class */
915 if (*s == ']' || *s == '^')
918 int weight = 2; /* let's weigh the evidence */
920 unsigned char un_char = 0, last_un_char;
921 char *send = strchr(s,']');
924 if (!send) /* has to be an expression */
930 else if (isDIGIT(*s)) {
932 if (isDIGIT(s[1]) && s[2] == ']')
938 for (; s < send; s++) {
939 last_un_char = un_char;
940 un_char = (unsigned char)*s;
945 weight -= seen[un_char] * 10;
947 scan_ident(s,send,tmpbuf,FALSE);
948 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
953 else if (*s == '$' && s[1] &&
954 strchr("[#!%*<>()-=",s[1])) {
955 if (/*{*/ strchr("])} =",s[2]))
964 if (strchr("wds]",s[1]))
966 else if (seen['\''] || seen['"'])
968 else if (strchr("rnftbxcav",s[1]))
970 else if (isDIGIT(s[1])) {
972 while (s[1] && isDIGIT(s[1]))
982 if (strchr("aA01! ",last_un_char))
984 if (strchr("zZ79~",s[1]))
988 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
989 isALPHA(*s) && s[1] && isALPHA(s[1])) {
994 if (keyword(tmpbuf, d - tmpbuf))
997 if (un_char == last_un_char + 1)
999 weight -= seen[un_char];
1004 if (weight >= 0) /* probably a character class */
1012 intuit_method(start,gv)
1016 char *s = start + (*start == '$');
1027 s = scan_word(s, tmpbuf, TRUE, &len);
1028 if (*start == '$') {
1029 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1034 return *s == '(' ? FUNCMETH : METHOD;
1036 if (!keyword(tmpbuf, len)) {
1037 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1038 if (indirgv && GvCVu(indirgv))
1040 /* filehandle or package name makes it a method */
1041 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
1043 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1044 return 0; /* no assumptions -- "=>" quotes bearword */
1045 nextval[nexttoke].opval =
1046 (OP*)newSVOP(OP_CONST, 0,
1048 nextval[nexttoke].opval->op_private =
1053 return *s == '(' ? FUNCMETH : METHOD;
1063 char *pdb = getenv("PERL5DB");
1067 return "BEGIN { require 'perl5db.pl' }";
1073 /* Encoded script support. filter_add() effectively inserts a
1074 * 'pre-processing' function into the current source input stream.
1075 * Note that the filter function only applies to the current source file
1076 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1078 * The datasv parameter (which may be NULL) can be used to pass
1079 * private data to this instance of the filter. The filter function
1080 * can recover the SV using the FILTER_DATA macro and use it to
1081 * store private buffers and state information.
1083 * The supplied datasv parameter is upgraded to a PVIO type
1084 * and the IoDIRP field is used to store the function pointer.
1085 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1086 * private use must be set using malloc'd pointers.
1088 static int filter_debug = 0;
1091 filter_add(funcp, datasv)
1095 if (!funcp){ /* temporary handy debugging hack to be deleted */
1096 filter_debug = atoi((char*)datasv);
1100 rsfp_filters = newAV();
1103 if (!SvUPGRADE(datasv, SVt_PVIO))
1104 die("Can't upgrade filter_add data to SVt_PVIO");
1105 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1107 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
1108 av_unshift(rsfp_filters, 1);
1109 av_store(rsfp_filters, 0, datasv) ;
1114 /* Delete most recently added instance of this filter function. */
1120 warn("filter_del func %p", funcp);
1121 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1123 /* if filter is on top of stack (usual case) just pop it off */
1124 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1125 /* sv_free(av_pop(rsfp_filters)); */
1126 sv_free(av_shift(rsfp_filters));
1130 /* we need to search for the correct entry and clear it */
1131 die("filter_del can only delete in reverse order (currently)");
1135 /* Invoke the n'th filter function for the current rsfp. */
1137 filter_read(idx, buf_sv, maxlen)
1140 int maxlen; /* 0 = read one text line */
1147 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1148 /* Provide a default input filter to make life easy. */
1149 /* Note that we append to the line. This is handy. */
1151 warn("filter_read %d: from rsfp\n", idx);
1155 int old_len = SvCUR(buf_sv) ;
1157 /* ensure buf_sv is large enough */
1158 SvGROW(buf_sv, old_len + maxlen) ;
1159 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1160 if (PerlIO_error(rsfp))
1161 return -1; /* error */
1163 return 0 ; /* end of file */
1165 SvCUR_set(buf_sv, old_len + len) ;
1168 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
1169 if (PerlIO_error(rsfp))
1170 return -1; /* error */
1172 return 0 ; /* end of file */
1175 return SvCUR(buf_sv);
1177 /* Skip this filter slot if filter has been deleted */
1178 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1180 warn("filter_read %d: skipped (filter deleted)\n", idx);
1181 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1183 /* Get function pointer hidden within datasv */
1184 funcp = (filter_t)IoDIRP(datasv);
1186 warn("filter_read %d: via function %p (%s)\n",
1187 idx, funcp, SvPV(datasv,na));
1188 /* Call function. The function is expected to */
1189 /* call "FILTER_READ(idx+1, buf_sv)" first. */
1190 /* Return: <0:error, =0:eof, >0:not eof */
1191 return (*funcp)(idx, buf_sv, maxlen);
1195 filter_gets(sv,fp, append)
1197 register PerlIO *fp;
1203 SvCUR_set(sv, 0); /* start with empty line */
1204 if (FILTER_READ(0, sv, 0) > 0)
1205 return ( SvPVX(sv) ) ;
1210 return (sv_gets(sv, fp, append));
1216 static char* exp_name[] =
1217 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1220 EXT int yychar; /* last token */
1230 if (pending_ident) {
1231 char pit = pending_ident;
1235 if (strchr(tokenbuf,':'))
1236 croak(no_myglob,tokenbuf);
1237 yylval.opval = newOP(OP_PADANY, 0);
1238 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1242 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1243 if (last_lop_op == OP_SORT &&
1244 tokenbuf[0] == '$' &&
1245 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1248 for (d = in_eval ? oldoldbufptr : linestart;
1249 d < bufend && *d != '\n';
1252 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1253 croak("Can't use \"my %s\" in sort comparison",
1259 yylval.opval = newOP(OP_PADANY, 0);
1260 yylval.opval->op_targ = tmp;
1264 /* Force them to make up their mind on "@foo". */
1265 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1266 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1267 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
1269 sprintf(tmpbuf, "In string, %s now must be written as \\%s",
1270 tokenbuf, tokenbuf);
1275 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1276 yylval.opval->op_private = OPpCONST_ENTERED;
1277 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1278 ((tokenbuf[0] == '$') ? SVt_PV
1279 : (tokenbuf[0] == '@') ? SVt_PVAV
1284 switch (lex_state) {
1286 case LEX_NORMAL: /* Some compilers will produce faster */
1287 case LEX_INTERPNORMAL: /* code if we comment these out. */
1293 yylval = nextval[nexttoke];
1295 lex_state = lex_defer;
1296 expect = lex_expect;
1297 lex_defer = LEX_NORMAL;
1299 return(nexttype[nexttoke]);
1301 case LEX_INTERPCASEMOD:
1303 if (bufptr != bufend && *bufptr != '\\')
1304 croak("panic: INTERPCASEMOD");
1306 if (bufptr == bufend || bufptr[1] == 'E') {
1309 oldmod = lex_casestack[--lex_casemods];
1310 lex_casestack[lex_casemods] = '\0';
1311 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1313 lex_state = LEX_INTERPCONCAT;
1317 if (bufptr != bufend)
1319 lex_state = LEX_INTERPCONCAT;
1324 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1325 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1326 if (strchr("LU", *s) &&
1327 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1329 lex_casestack[--lex_casemods] = '\0';
1332 if (lex_casemods > 10) {
1333 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
1334 if (newlb != lex_casestack) {
1336 lex_casestack = newlb;
1339 lex_casestack[lex_casemods++] = *s;
1340 lex_casestack[lex_casemods] = '\0';
1341 lex_state = LEX_INTERPCONCAT;
1342 nextval[nexttoke].ival = 0;
1345 nextval[nexttoke].ival = OP_LCFIRST;
1347 nextval[nexttoke].ival = OP_UCFIRST;
1349 nextval[nexttoke].ival = OP_LC;
1351 nextval[nexttoke].ival = OP_UC;
1353 nextval[nexttoke].ival = OP_QUOTEMETA;
1355 croak("panic: yylex");
1367 case LEX_INTERPPUSH:
1368 return sublex_push();
1370 case LEX_INTERPSTART:
1371 if (bufptr == bufend)
1372 return sublex_done();
1374 lex_dojoin = (*bufptr == '@');
1375 lex_state = LEX_INTERPNORMAL;
1377 nextval[nexttoke].ival = 0;
1379 force_ident("\"", '$');
1380 nextval[nexttoke].ival = 0;
1382 nextval[nexttoke].ival = 0;
1384 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1393 case LEX_INTERPENDMAYBE:
1394 if (intuit_more(bufptr)) {
1395 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1403 lex_state = LEX_INTERPCONCAT;
1407 case LEX_INTERPCONCAT:
1410 croak("panic: INTERPCONCAT");
1412 if (bufptr == bufend)
1413 return sublex_done();
1415 if (SvIVX(linestr) == '\'') {
1416 SV *sv = newSVsv(linestr);
1419 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1423 s = scan_const(bufptr);
1425 lex_state = LEX_INTERPCASEMOD;
1427 lex_state = LEX_INTERPSTART;
1431 nextval[nexttoke] = yylval;
1444 lex_state = LEX_NORMAL;
1445 s = scan_formline(bufptr);
1452 oldoldbufptr = oldbufptr;
1455 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
1461 croak("Unrecognized character \\%03o", *s & 255);
1464 goto fake_eof; /* emulate EOF on ^D or ^Z */
1470 yyerror("Missing right bracket");
1474 goto retry; /* ignore stray nulls */
1477 if (!in_eval && !preambled) {
1479 sv_setpv(linestr,incl_perldb());
1481 sv_catpv(linestr,";");
1483 while(AvFILL(preambleav) >= 0) {
1484 SV *tmpsv = av_shift(preambleav);
1485 sv_catsv(linestr, tmpsv);
1486 sv_catpv(linestr, ";");
1489 sv_free((SV*)preambleav);
1492 if (minus_n || minus_p) {
1493 sv_catpv(linestr, "LINE: while (<>) {");
1495 sv_catpv(linestr,"chomp;");
1497 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1499 GvIMPORTED_AV_on(gv);
1502 New(201, tmpbuf1, strlen(splitstr) * 2 + 20, char);
1503 if (strchr("/'\"", *splitstr)
1504 && strchr(splitstr + 1, *splitstr))
1505 sprintf(tmpbuf1, "@F=split(%s);", splitstr);
1508 s = "'~#\200\1'"; /* surely one char is unused...*/
1509 while (s[1] && strchr(splitstr, *s)) s++;
1511 sprintf(tmpbuf1, "@F=split(%s%c",
1512 "q" + (delim == '\''), delim);
1513 d = tmpbuf1 + strlen(tmpbuf1);
1514 for (s = splitstr; *s; ) {
1519 sprintf(d, "%c);", delim);
1521 sv_catpv(linestr,tmpbuf1);
1525 sv_catpv(linestr,"@F=split(' ');");
1528 sv_catpv(linestr, "\n");
1529 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1530 bufend = SvPVX(linestr) + SvCUR(linestr);
1531 if (perldb && curstash != debstash) {
1532 SV *sv = NEWSV(85,0);
1534 sv_upgrade(sv, SVt_PVMG);
1535 sv_setsv(sv,linestr);
1536 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1541 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
1544 if (preprocess && !in_eval)
1545 (void)my_pclose(rsfp);
1546 else if ((PerlIO *)rsfp == PerlIO_stdin())
1547 PerlIO_clearerr(rsfp);
1549 (void)PerlIO_close(rsfp);
1552 if (!in_eval && (minus_n || minus_p)) {
1553 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1554 sv_catpv(linestr,";}");
1555 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1556 bufend = SvPVX(linestr) + SvCUR(linestr);
1557 minus_n = minus_p = 0;
1560 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1561 sv_setpv(linestr,"");
1562 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1565 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1568 /* Incest with pod. */
1569 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1570 sv_setpv(linestr, "");
1571 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1572 bufend = SvPVX(linestr) + SvCUR(linestr);
1577 } while (doextract);
1578 oldoldbufptr = oldbufptr = bufptr = linestart = s;
1579 if (perldb && curstash != debstash) {
1580 SV *sv = NEWSV(85,0);
1582 sv_upgrade(sv, SVt_PVMG);
1583 sv_setsv(sv,linestr);
1584 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1586 bufend = SvPVX(linestr) + SvCUR(linestr);
1587 if (curcop->cop_line == 1) {
1588 while (s < bufend && isSPACE(*s))
1590 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1594 if (*s == '#' && *(s+1) == '!')
1596 #ifdef ALTERNATE_SHEBANG
1598 static char as[] = ALTERNATE_SHEBANG;
1599 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1600 d = s + (sizeof(as) - 1);
1602 #endif /* ALTERNATE_SHEBANG */
1611 while (*d && !isSPACE(*d))
1615 #ifdef ARG_ZERO_IS_SCRIPT
1616 if (ipathend > ipath) {
1618 * HP-UX (at least) sets argv[0] to the script name,
1619 * which makes $^X incorrect. And Digital UNIX and Linux,
1620 * at least, set argv[0] to the basename of the Perl
1621 * interpreter. So, having found "#!", we'll set it right.
1623 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1624 assert(SvPOK(x) || SvGMAGICAL(x));
1625 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
1626 sv_setpvn(x, ipath, ipathend - ipath);
1629 TAINT_NOT; /* $^X is always tainted, but that's OK */
1631 #endif /* ARG_ZERO_IS_SCRIPT */
1636 d = instr(s,"perl -");
1638 d = instr(s,"perl");
1639 #ifdef ALTERNATE_SHEBANG
1641 * If the ALTERNATE_SHEBANG on this system starts with a
1642 * character that can be part of a Perl expression, then if
1643 * we see it but not "perl", we're probably looking at the
1644 * start of Perl code, not a request to hand off to some
1645 * other interpreter. Similarly, if "perl" is there, but
1646 * not in the first 'word' of the line, we assume the line
1647 * contains the start of the Perl program.
1649 if (d && *s != '#') {
1651 while (*c && !strchr("; \t\r\n\f\v#", *c))
1654 d = Nullch; /* "perl" not in first word; ignore */
1656 *s = '#'; /* Don't try to parse shebang line */
1658 #endif /* ALTERNATE_SHEBANG */
1663 !instr(s,"indir") &&
1664 instr(origargv[0],"perl"))
1670 while (s < bufend && isSPACE(*s))
1673 Newz(899,newargv,origargc+3,char*);
1675 while (s < bufend && !isSPACE(*s))
1678 Copy(origargv+1, newargv+2, origargc+1, char*);
1683 execv(ipath, newargv);
1684 croak("Can't exec %s", ipath);
1687 int oldpdb = perldb;
1691 while (*d && !isSPACE(*d)) d++;
1692 while (*d == ' ' || *d == '\t') d++;
1695 while (d = moreswitches(d)) ;
1696 if (perldb && !oldpdb ||
1697 ( minus_n || minus_p ) && !(oldn || oldp) )
1698 /* if we have already added "LINE: while (<>) {",
1699 we must not do it again */
1701 sv_setpv(linestr, "");
1702 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
1703 bufend = SvPVX(linestr) + SvCUR(linestr);
1706 (void)gv_fetchfile(origfilename);
1713 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1715 lex_state = LEX_FORMLINE;
1720 warn("Illegal character \\%03o (carriage return)", '\r');
1722 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
1723 case ' ': case '\t': case '\f': case 013:
1728 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1730 while (s < d && *s != '\n')
1735 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1737 lex_state = LEX_FORMLINE;
1747 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1752 while (s < bufend && (*s == ' ' || *s == '\t'))
1755 if (strnEQ(s,"=>",2)) {
1757 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1758 (int)tmp, (int)tmp);
1759 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1760 OPERATOR('-'); /* unary minus */
1762 last_uni = oldbufptr;
1763 last_lop_op = OP_FTEREAD; /* good enough */
1765 case 'r': FTST(OP_FTEREAD);
1766 case 'w': FTST(OP_FTEWRITE);
1767 case 'x': FTST(OP_FTEEXEC);
1768 case 'o': FTST(OP_FTEOWNED);
1769 case 'R': FTST(OP_FTRREAD);
1770 case 'W': FTST(OP_FTRWRITE);
1771 case 'X': FTST(OP_FTREXEC);
1772 case 'O': FTST(OP_FTROWNED);
1773 case 'e': FTST(OP_FTIS);
1774 case 'z': FTST(OP_FTZERO);
1775 case 's': FTST(OP_FTSIZE);
1776 case 'f': FTST(OP_FTFILE);
1777 case 'd': FTST(OP_FTDIR);
1778 case 'l': FTST(OP_FTLINK);
1779 case 'p': FTST(OP_FTPIPE);
1780 case 'S': FTST(OP_FTSOCK);
1781 case 'u': FTST(OP_FTSUID);
1782 case 'g': FTST(OP_FTSGID);
1783 case 'k': FTST(OP_FTSVTX);
1784 case 'b': FTST(OP_FTBLK);
1785 case 'c': FTST(OP_FTCHR);
1786 case 't': FTST(OP_FTTTY);
1787 case 'T': FTST(OP_FTTEXT);
1788 case 'B': FTST(OP_FTBINARY);
1789 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1790 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1791 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1793 croak("Unrecognized file test: -%c", (int)tmp);
1800 if (expect == XOPERATOR)
1805 else if (*s == '>') {
1808 if (isIDFIRST(*s)) {
1809 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1817 if (expect == XOPERATOR)
1820 if (isSPACE(*s) || !isSPACE(*bufptr))
1822 OPERATOR('-'); /* unary minus */
1829 if (expect == XOPERATOR)
1834 if (expect == XOPERATOR)
1837 if (isSPACE(*s) || !isSPACE(*bufptr))
1843 if (expect != XOPERATOR) {
1844 s = scan_ident(s, bufend, tokenbuf, TRUE);
1846 force_ident(tokenbuf, '*');
1859 if (expect == XOPERATOR) {
1864 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1867 yyerror("Final % should be \\% or %name");
1870 pending_ident = '%';
1892 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1893 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1898 if (curcop->cop_line < copline)
1899 copline = curcop->cop_line;
1910 if (lex_brackets <= 0)
1911 yyerror("Unmatched right bracket");
1914 if (lex_state == LEX_INTERPNORMAL) {
1915 if (lex_brackets == 0) {
1916 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1917 lex_state = LEX_INTERPEND;
1924 if (lex_brackets > 100) {
1925 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
1926 if (newlb != lex_brackstack) {
1928 lex_brackstack = newlb;
1933 if (lex_formbrack) {
1937 if (oldoldbufptr == last_lop)
1938 lex_brackstack[lex_brackets++] = XTERM;
1940 lex_brackstack[lex_brackets++] = XOPERATOR;
1941 OPERATOR(HASHBRACK);
1943 while (s < bufend && (*s == ' ' || *s == '\t'))
1947 if (d < bufend && *d == '-') {
1950 while (d < bufend && (*d == ' ' || *d == '\t'))
1953 if (d < bufend && isIDFIRST(*d)) {
1954 d = scan_word(d, tokenbuf + 1, FALSE, &len);
1955 while (d < bufend && (*d == ' ' || *d == '\t'))
1958 char minus = (tokenbuf[0] == '-');
1960 (keyword(tokenbuf + 1, len) ||
1961 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1962 perl_get_cv(tokenbuf + 1, FALSE) ))
1963 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1964 tokenbuf + !minus, tokenbuf + !minus);
1965 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1972 lex_brackstack[lex_brackets++] = XSTATE;
1976 lex_brackstack[lex_brackets++] = XOPERATOR;
1981 if (oldoldbufptr == last_lop)
1982 lex_brackstack[lex_brackets++] = XTERM;
1984 lex_brackstack[lex_brackets++] = XOPERATOR;
1987 OPERATOR(HASHBRACK);
1989 for (t = s; t < bufend && isALNUM(*t); t++) ;
1991 else if (*s == '\'' || *s == '"') {
1998 while (t < bufend && isSPACE(*t))
2000 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2001 OPERATOR(HASHBRACK);
2005 lex_brackstack[lex_brackets-1] = XSTATE;
2011 yylval.ival = curcop->cop_line;
2012 if (isSPACE(*s) || *s == '#')
2013 copline = NOLINE; /* invalidate current command line number */
2018 if (lex_brackets <= 0)
2019 yyerror("Unmatched right bracket");
2021 expect = (expectation)lex_brackstack[--lex_brackets];
2022 if (lex_brackets < lex_formbrack)
2024 if (lex_state == LEX_INTERPNORMAL) {
2025 if (lex_brackets == 0) {
2026 if (lex_fakebrack) {
2027 lex_state = LEX_INTERPEND;
2029 return yylex(); /* ignore fake brackets */
2031 if (*s == '-' && s[1] == '>')
2032 lex_state = LEX_INTERPENDMAYBE;
2033 else if (*s != '[' && *s != '{')
2034 lex_state = LEX_INTERPEND;
2037 if (lex_brackets < lex_fakebrack) {
2040 return yylex(); /* ignore fake brackets */
2050 if (expect == XOPERATOR) {
2051 if (dowarn && isALPHA(*s) && bufptr == linestart) {
2059 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
2062 force_ident(tokenbuf, '&');
2066 yylval.ival = (OPpENTERSUB_AMPER<<8);
2085 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2086 warn("Reversed %c= operator",(int)tmp);
2088 if (expect == XSTATE && isALPHA(tmp) &&
2089 (s == linestart+1 || s[-2] == '\n') )
2091 if (in_eval && !rsfp) {
2096 if (strnEQ(s,"=cut",4)) {
2113 if (lex_brackets < lex_formbrack) {
2115 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2116 if (*t == '\n' || *t == '#') {
2134 if (expect != XOPERATOR) {
2135 if (s[1] != '<' && !strchr(s,'>'))
2138 s = scan_heredoc(s);
2140 s = scan_inputsymbol(s);
2141 TERM(sublex_start());
2146 SHop(OP_LEFT_SHIFT);
2160 SHop(OP_RIGHT_SHIFT);
2169 if (expect == XOPERATOR) {
2170 if (lex_formbrack && lex_brackets == lex_formbrack) {
2173 return ','; /* grandfather non-comma-format format */
2177 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2178 if (expect == XOPERATOR)
2179 no_op("Array length", bufptr);
2181 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2185 pending_ident = '#';
2189 if (expect == XOPERATOR)
2190 no_op("Scalar", bufptr);
2192 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2195 yyerror("Final $ should be \\$ or $name");
2199 /* This kludge not intended to be bulletproof. */
2200 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2201 yylval.opval = newSVOP(OP_CONST, 0,
2202 newSViv((IV)compiling.cop_arybase));
2203 yylval.opval->op_private = OPpCONST_ARYBASE;
2208 if (lex_state == LEX_NORMAL)
2211 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2217 isSPACE(*t) || isALNUM(*t) || *t == '$';
2220 bufptr = skipspace(bufptr);
2221 while (t < bufend && *t != ']')
2223 warn("Multidimensional syntax %.*s not supported",
2224 (t - bufptr) + 1, bufptr);
2228 else if (*s == '{') {
2230 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2231 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2235 for (t++; isSPACE(*t); t++) ;
2236 if (isIDFIRST(*t)) {
2237 t = scan_word(t, tmpbuf, TRUE, &len);
2238 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2239 warn("You need to quote \"%s\"", tmpbuf);
2246 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
2247 bool islop = (last_lop == oldoldbufptr);
2248 if (!islop || last_lop_op == OP_GREPSTART)
2250 else if (strchr("$@\"'`q", *s))
2251 expect = XTERM; /* e.g. print $fh "foo" */
2252 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2253 expect = XTERM; /* e.g. print $fh &sub */
2254 else if (isIDFIRST(*s)) {
2256 scan_word(s, tmpbuf, TRUE, &len);
2257 if (keyword(tmpbuf, len))
2258 expect = XTERM; /* e.g. print $fh length() */
2260 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2261 if (gv && GvCVu(gv))
2262 expect = XTERM; /* e.g. print $fh subr() */
2265 else if (isDIGIT(*s))
2266 expect = XTERM; /* e.g. print $fh 3 */
2267 else if (*s == '.' && isDIGIT(s[1]))
2268 expect = XTERM; /* e.g. print $fh .3 */
2269 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2270 expect = XTERM; /* e.g. print $fh -1 */
2271 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2272 expect = XTERM; /* print $fh <<"EOF" */
2274 pending_ident = '$';
2278 if (expect == XOPERATOR)
2281 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2284 yyerror("Final @ should be \\@ or @name");
2287 if (lex_state == LEX_NORMAL)
2289 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2293 /* Warn about @ where they meant $. */
2295 if (*s == '[' || *s == '{') {
2297 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2299 if (*t == '}' || *t == ']') {
2301 bufptr = skipspace(bufptr);
2302 warn("Scalar value %.*s better written as $%.*s",
2303 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2308 pending_ident = '@';
2311 case '/': /* may either be division or pattern */
2312 case '?': /* may either be conditional or pattern */
2313 if (expect != XOPERATOR) {
2316 TERM(sublex_start());
2324 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
2325 (s == linestart || s[-1] == '\n') ) {
2330 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2336 yylval.ival = OPf_SPECIAL;
2342 if (expect != XOPERATOR)
2347 case '0': case '1': case '2': case '3': case '4':
2348 case '5': case '6': case '7': case '8': case '9':
2350 if (expect == XOPERATOR)
2356 if (expect == XOPERATOR) {
2357 if (lex_formbrack && lex_brackets == lex_formbrack) {
2360 return ','; /* grandfather non-comma-format format */
2366 missingterm((char*)0);
2367 yylval.ival = OP_CONST;
2368 TERM(sublex_start());
2372 if (expect == XOPERATOR) {
2373 if (lex_formbrack && lex_brackets == lex_formbrack) {
2376 return ','; /* grandfather non-comma-format format */
2382 missingterm((char*)0);
2383 yylval.ival = OP_CONST;
2384 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2385 if (*d == '$' || *d == '@' || *d == '\\') {
2386 yylval.ival = OP_STRINGIFY;
2390 TERM(sublex_start());
2394 if (expect == XOPERATOR)
2395 no_op("Backticks",s);
2397 missingterm((char*)0);
2398 yylval.ival = OP_BACKTICK;
2400 TERM(sublex_start());
2404 if (dowarn && lex_inwhat && isDIGIT(*s))
2405 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2406 if (expect == XOPERATOR)
2407 no_op("Backslash",s);
2411 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2447 s = scan_word(s, tokenbuf, FALSE, &len);
2449 /* Some keywords can be followed by any delimiter, including ':' */
2450 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2451 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2452 (tokenbuf[0] == 'q' &&
2453 strchr("qwx", tokenbuf[1]))));
2455 /* x::* is just a word, unless x is "CORE" */
2456 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2460 while (d < bufend && isSPACE(*d))
2461 d++; /* no comments skipped here, or s### is misparsed */
2463 /* Is this a label? */
2464 if (!tmp && expect == XSTATE
2465 && d < bufend && *d == ':' && *(d + 1) != ':') {
2467 yylval.pval = savepv(tokenbuf);
2472 /* Check for keywords */
2473 tmp = keyword(tokenbuf, len);
2475 /* Is this a word before a => operator? */
2476 if (strnEQ(d,"=>",2)) {
2478 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2479 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2480 tokenbuf, tokenbuf);
2481 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2482 yylval.opval->op_private = OPpCONST_BARE;
2486 if (tmp < 0) { /* second-class keyword? */
2488 if (expect != XOPERATOR &&
2489 (*s != ':' || s[1] != ':') &&
2490 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2502 default: /* not a keyword */
2505 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2507 /* Get the rest if it looks like a package qualifier */
2509 if (*s == '\'' || *s == ':' && s[1] == ':') {
2510 s = scan_word(s, tokenbuf + len, TRUE, &len);
2512 croak("Bad name after %s::", tokenbuf);
2515 if (expect == XOPERATOR) {
2516 if (bufptr == linestart) {
2522 no_op("Bareword",s);
2525 /* Look for a subroutine with this name in current package. */
2527 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2529 /* Presume this is going to be a bareword of some sort. */
2532 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2533 yylval.opval->op_private = OPpCONST_BARE;
2535 /* See if it's the indirect object for a list operator. */
2538 oldoldbufptr < bufptr &&
2539 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2540 /* NO SKIPSPACE BEFORE HERE! */
2542 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2544 bool immediate_paren = *s == '(';
2546 /* (Now we can afford to cross potential line boundary.) */
2549 /* Two barewords in a row may indicate method call. */
2551 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2554 /* If not a declared subroutine, it's an indirect object. */
2555 /* (But it's an indir obj regardless for sort.) */
2557 if ((last_lop_op == OP_SORT ||
2558 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
2559 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
2560 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2565 /* If followed by a paren, it's certainly a subroutine. */
2571 nextval[nexttoke].opval = yylval.opval;
2578 /* If followed by var or block, call it a method (unless sub) */
2580 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
2581 last_lop = oldbufptr;
2582 last_lop_op = OP_METHOD;
2586 /* If followed by a bareword, see if it looks like indir obj. */
2588 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2591 /* Not a method, so call it a subroutine (if defined) */
2593 if (gv && GvCVu(gv)) {
2596 nextval[nexttoke].opval = yylval.opval;
2602 if (lastchar == '-')
2603 warn("Ambiguous use of -%s resolved as -&%s()",
2604 tokenbuf, tokenbuf);
2605 last_lop = oldbufptr;
2606 last_lop_op = OP_ENTERSUB;
2607 /* Check for a constant sub */
2609 SV *sv = cv_const_sv(cv);
2611 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2612 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2613 yylval.opval->op_private = 0;
2618 /* Resolve to GV now. */
2619 op_free(yylval.opval);
2620 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
2621 /* Is there a prototype? */
2624 char *proto = SvPV((SV*)cv, len);
2627 if (strEQ(proto, "$"))
2629 if (*proto == '&' && *s == '{') {
2630 sv_setpv(subname,"__ANON__");
2634 nextval[nexttoke].opval = yylval.opval;
2640 if (hints & HINT_STRICT_SUBS &&
2643 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
2644 last_lop_op != OP_ACCEPT &&
2645 last_lop_op != OP_PIPE_OP &&
2646 last_lop_op != OP_SOCKPAIR)
2649 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2654 /* Call it a bare word */
2658 if (lastchar != '-') {
2659 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2661 warn(warn_reserved, tokenbuf);
2664 if (lastchar && strchr("*%&", lastchar)) {
2665 warn("Operator or semicolon missing before %c%s",
2666 lastchar, tokenbuf);
2667 warn("Ambiguous use of %c resolved as operator %c",
2668 lastchar, lastchar);
2675 if (tokenbuf[2] == 'L')
2676 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2678 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2679 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2682 case KEY___PACKAGE__:
2683 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2685 ? newSVsv(curstname)
2694 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
2696 char *pname = "main";
2697 if (tokenbuf[2] == 'D')
2698 pname = HvNAME(curstash ? curstash : defstash);
2699 sprintf(dname,"%s::DATA", pname);
2700 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
2703 GvIOp(gv) = newIO();
2704 IoIFP(GvIOp(gv)) = rsfp;
2705 #if defined(HAS_FCNTL) && defined(F_SETFD)
2707 int fd = PerlIO_fileno(rsfp);
2708 fcntl(fd,F_SETFD,fd >= 3);
2711 /* Mark this internal pseudo-handle as clean */
2712 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
2714 IoTYPE(GvIOp(gv)) = '|';
2715 else if ((PerlIO*)rsfp == PerlIO_stdin())
2716 IoTYPE(GvIOp(gv)) = '-';
2718 IoTYPE(GvIOp(gv)) = '<';
2728 if (expect == XSTATE) {
2735 if (*s == ':' && s[1] == ':') {
2738 s = scan_word(s, tokenbuf, FALSE, &len);
2739 tmp = keyword(tokenbuf, len);
2753 LOP(OP_ACCEPT,XTERM);
2759 LOP(OP_ATAN2,XTERM);
2768 LOP(OP_BLESS,XTERM);
2777 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2797 LOP(OP_CRYPT,XTERM);
2801 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2802 if (*d != '0' && isDIGIT(*d))
2803 yywarn("chmod: mode argument is missing initial 0");
2805 LOP(OP_CHMOD,XTERM);
2808 LOP(OP_CHOWN,XTERM);
2811 LOP(OP_CONNECT,XTERM);
2827 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2831 hints |= HINT_BLOCK_SCOPE;
2841 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2842 LOP(OP_DBMOPEN,XTERM);
2848 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2855 yylval.ival = curcop->cop_line;
2869 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2870 UNIBRACK(OP_ENTEREVAL);
2885 case KEY_endhostent:
2891 case KEY_endservent:
2894 case KEY_endprotoent:
2905 yylval.ival = curcop->cop_line;
2907 if (isIDFIRST(*s)) {
2909 if ((bufend - p) >= 3 &&
2910 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2914 croak("Missing $ on loop variable");
2919 LOP(OP_FORMLINE,XTERM);
2925 LOP(OP_FCNTL,XTERM);
2931 LOP(OP_FLOCK,XTERM);
2940 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2943 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2958 case KEY_getpriority:
2959 LOP(OP_GETPRIORITY,XTERM);
2961 case KEY_getprotobyname:
2964 case KEY_getprotobynumber:
2965 LOP(OP_GPBYNUMBER,XTERM);
2967 case KEY_getprotoent:
2979 case KEY_getpeername:
2980 UNI(OP_GETPEERNAME);
2982 case KEY_gethostbyname:
2985 case KEY_gethostbyaddr:
2986 LOP(OP_GHBYADDR,XTERM);
2988 case KEY_gethostent:
2991 case KEY_getnetbyname:
2994 case KEY_getnetbyaddr:
2995 LOP(OP_GNBYADDR,XTERM);
3000 case KEY_getservbyname:
3001 LOP(OP_GSBYNAME,XTERM);
3003 case KEY_getservbyport:
3004 LOP(OP_GSBYPORT,XTERM);
3006 case KEY_getservent:
3009 case KEY_getsockname:
3010 UNI(OP_GETSOCKNAME);
3012 case KEY_getsockopt:
3013 LOP(OP_GSOCKOPT,XTERM);
3035 yylval.ival = curcop->cop_line;
3039 LOP(OP_INDEX,XTERM);
3045 LOP(OP_IOCTL,XTERM);
3057 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3088 LOP(OP_LISTEN,XTERM);
3095 TERM(sublex_start());
3098 LOP(OP_MAPSTART,XREF);
3101 LOP(OP_MKDIR,XTERM);
3104 LOP(OP_MSGCTL,XTERM);
3107 LOP(OP_MSGGET,XTERM);
3110 LOP(OP_MSGRCV,XTERM);
3113 LOP(OP_MSGSND,XTERM);
3120 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3127 if (expect != XSTATE)
3128 yyerror("\"no\" not allowed in expression");
3129 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3130 s = force_version(s);
3139 if (isIDFIRST(*s)) {
3141 for (d = s; isALNUM(*d); d++) ;
3143 if (strchr("|&*+-=!?:.", *t))
3144 warn("Precedence problem: open %.*s should be open(%.*s)",
3150 yylval.ival = OP_OR;
3160 LOP(OP_OPEN_DIR,XTERM);
3163 checkcomma(s,tokenbuf,"filehandle");
3167 checkcomma(s,tokenbuf,"filehandle");
3186 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3190 LOP(OP_PIPE_OP,XTERM);
3195 missingterm((char*)0);
3196 yylval.ival = OP_CONST;
3197 TERM(sublex_start());
3205 missingterm((char*)0);
3206 if (dowarn && SvLEN(lex_stuff)) {
3207 d = SvPV_force(lex_stuff, len);
3208 for (; len; --len, ++d) {
3210 warn("Possible attempt to separate words with commas");
3214 warn("Possible attempt to put comments in qw() list");
3220 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3224 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3227 yylval.ival = OP_SPLIT;
3231 last_lop = oldbufptr;
3232 last_lop_op = OP_SPLIT;
3238 missingterm((char*)0);
3239 yylval.ival = OP_STRINGIFY;
3240 if (SvIVX(lex_stuff) == '\'')
3241 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
3242 TERM(sublex_start());
3247 missingterm((char*)0);
3248 yylval.ival = OP_BACKTICK;
3250 TERM(sublex_start());
3257 s = force_word(s,WORD,TRUE,TRUE,FALSE);
3258 if (isIDFIRST(*tokenbuf))
3259 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
3261 yyerror("<> should be quotes");
3268 s = force_word(s,WORD,TRUE,FALSE,FALSE);
3272 LOP(OP_RENAME,XTERM);
3281 LOP(OP_RINDEX,XTERM);
3304 LOP(OP_REVERSE,XTERM);
3315 TERM(sublex_start());
3317 TOKEN(1); /* force error */
3326 LOP(OP_SELECT,XTERM);
3332 LOP(OP_SEMCTL,XTERM);
3335 LOP(OP_SEMGET,XTERM);
3338 LOP(OP_SEMOP,XTERM);
3344 LOP(OP_SETPGRP,XTERM);
3346 case KEY_setpriority:
3347 LOP(OP_SETPRIORITY,XTERM);
3349 case KEY_sethostent:
3355 case KEY_setservent:
3358 case KEY_setprotoent:
3368 LOP(OP_SEEKDIR,XTERM);
3370 case KEY_setsockopt:
3371 LOP(OP_SSOCKOPT,XTERM);
3377 LOP(OP_SHMCTL,XTERM);
3380 LOP(OP_SHMGET,XTERM);
3383 LOP(OP_SHMREAD,XTERM);
3386 LOP(OP_SHMWRITE,XTERM);
3389 LOP(OP_SHUTDOWN,XTERM);
3398 LOP(OP_SOCKET,XTERM);
3400 case KEY_socketpair:
3401 LOP(OP_SOCKPAIR,XTERM);
3404 checkcomma(s,tokenbuf,"subroutine name");
3406 if (*s == ';' || *s == ')') /* probably a close */
3407 croak("sort is now a reserved word");
3409 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3413 LOP(OP_SPLIT,XTERM);
3416 LOP(OP_SPRINTF,XTERM);
3419 LOP(OP_SPLICE,XTERM);
3435 LOP(OP_SUBSTR,XTERM);
3442 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3445 d = scan_word(s, tmpbuf, TRUE, &len);
3446 if (strchr(tmpbuf, ':'))
3447 sv_setpv(subname, tmpbuf);
3449 sv_setsv(subname,curstname);
3450 sv_catpvn(subname,"::",2);
3451 sv_catpvn(subname,tmpbuf,len);
3453 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3457 expect = XTERMBLOCK;
3458 sv_setpv(subname,"?");
3461 if (tmp == KEY_format) {
3464 lex_formbrack = lex_brackets + 1;
3468 /* Look for a prototype */
3475 SvREFCNT_dec(lex_stuff);
3477 croak("Prototype not terminated");
3480 d = SvPVX(lex_stuff);
3482 for (p = d; *p; ++p) {
3487 SvCUR(lex_stuff) = tmp;
3490 nextval[1] = nextval[0];
3491 nexttype[1] = nexttype[0];
3492 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3493 nexttype[0] = THING;
3494 if (nexttoke == 1) {
3495 lex_defer = lex_state;
3496 lex_expect = expect;
3497 lex_state = LEX_KNOWNEXT;
3502 if (*SvPV(subname,na) == '?') {
3503 sv_setpv(subname,"__ANON__");
3510 LOP(OP_SYSTEM,XREF);
3513 LOP(OP_SYMLINK,XTERM);
3516 LOP(OP_SYSCALL,XTERM);
3519 LOP(OP_SYSOPEN,XTERM);
3522 LOP(OP_SYSREAD,XTERM);
3525 LOP(OP_SYSWRITE,XTERM);
3529 TERM(sublex_start());
3550 LOP(OP_TRUNCATE,XTERM);
3562 yylval.ival = curcop->cop_line;
3566 yylval.ival = curcop->cop_line;
3570 LOP(OP_UNLINK,XTERM);
3576 LOP(OP_UNPACK,XTERM);
3579 LOP(OP_UTIME,XTERM);
3583 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3584 if (*d != '0' && isDIGIT(*d))
3585 yywarn("umask: argument is missing initial 0");
3590 LOP(OP_UNSHIFT,XTERM);
3593 if (expect != XSTATE)
3594 yyerror("\"use\" not allowed in expression");
3597 s = force_version(s);
3598 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3599 nextval[nexttoke].opval = Nullop;
3604 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3605 s = force_version(s);
3618 yylval.ival = curcop->cop_line;
3622 hints |= HINT_BLOCK_SCOPE;
3629 LOP(OP_WAITPID,XTERM);
3635 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3639 if (expect == XOPERATOR)
3645 yylval.ival = OP_XOR;
3650 TERM(sublex_start());
3663 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3664 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3665 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
3666 if (strEQ(d,"__DATA__")) return KEY___DATA__;
3667 if (strEQ(d,"__END__")) return KEY___END__;
3671 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3676 if (strEQ(d,"and")) return -KEY_and;
3677 if (strEQ(d,"abs")) return -KEY_abs;
3680 if (strEQ(d,"alarm")) return -KEY_alarm;
3681 if (strEQ(d,"atan2")) return -KEY_atan2;
3684 if (strEQ(d,"accept")) return -KEY_accept;
3689 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3692 if (strEQ(d,"bless")) return -KEY_bless;
3693 if (strEQ(d,"bind")) return -KEY_bind;
3694 if (strEQ(d,"binmode")) return -KEY_binmode;
3697 if (strEQ(d,"CORE")) return -KEY_CORE;
3702 if (strEQ(d,"cmp")) return -KEY_cmp;
3703 if (strEQ(d,"chr")) return -KEY_chr;
3704 if (strEQ(d,"cos")) return -KEY_cos;
3707 if (strEQ(d,"chop")) return KEY_chop;
3710 if (strEQ(d,"close")) return -KEY_close;
3711 if (strEQ(d,"chdir")) return -KEY_chdir;
3712 if (strEQ(d,"chomp")) return KEY_chomp;
3713 if (strEQ(d,"chmod")) return -KEY_chmod;
3714 if (strEQ(d,"chown")) return -KEY_chown;
3715 if (strEQ(d,"crypt")) return -KEY_crypt;
3718 if (strEQ(d,"chroot")) return -KEY_chroot;
3719 if (strEQ(d,"caller")) return -KEY_caller;
3722 if (strEQ(d,"connect")) return -KEY_connect;
3725 if (strEQ(d,"closedir")) return -KEY_closedir;
3726 if (strEQ(d,"continue")) return -KEY_continue;
3731 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3736 if (strEQ(d,"do")) return KEY_do;
3739 if (strEQ(d,"die")) return -KEY_die;
3742 if (strEQ(d,"dump")) return -KEY_dump;
3745 if (strEQ(d,"delete")) return KEY_delete;
3748 if (strEQ(d,"defined")) return KEY_defined;
3749 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3752 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3757 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3758 if (strEQ(d,"END")) return KEY_END;
3763 if (strEQ(d,"eq")) return -KEY_eq;
3766 if (strEQ(d,"eof")) return -KEY_eof;
3767 if (strEQ(d,"exp")) return -KEY_exp;
3770 if (strEQ(d,"else")) return KEY_else;
3771 if (strEQ(d,"exit")) return -KEY_exit;
3772 if (strEQ(d,"eval")) return KEY_eval;
3773 if (strEQ(d,"exec")) return -KEY_exec;
3774 if (strEQ(d,"each")) return KEY_each;
3777 if (strEQ(d,"elsif")) return KEY_elsif;
3780 if (strEQ(d,"exists")) return KEY_exists;
3781 if (strEQ(d,"elseif")) warn("elseif should be elsif");
3784 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3785 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3788 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3791 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3792 if (strEQ(d,"endservent")) return -KEY_endservent;
3795 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3802 if (strEQ(d,"for")) return KEY_for;
3805 if (strEQ(d,"fork")) return -KEY_fork;
3808 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3809 if (strEQ(d,"flock")) return -KEY_flock;
3812 if (strEQ(d,"format")) return KEY_format;
3813 if (strEQ(d,"fileno")) return -KEY_fileno;
3816 if (strEQ(d,"foreach")) return KEY_foreach;
3819 if (strEQ(d,"formline")) return -KEY_formline;
3825 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3826 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3830 if (strnEQ(d,"get",3)) {
3835 if (strEQ(d,"ppid")) return -KEY_getppid;
3836 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3839 if (strEQ(d,"pwent")) return -KEY_getpwent;
3840 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3841 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3844 if (strEQ(d,"peername")) return -KEY_getpeername;
3845 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3846 if (strEQ(d,"priority")) return -KEY_getpriority;
3849 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3852 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3856 else if (*d == 'h') {
3857 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3858 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3859 if (strEQ(d,"hostent")) return -KEY_gethostent;
3861 else if (*d == 'n') {
3862 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3863 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3864 if (strEQ(d,"netent")) return -KEY_getnetent;
3866 else if (*d == 's') {
3867 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3868 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3869 if (strEQ(d,"servent")) return -KEY_getservent;
3870 if (strEQ(d,"sockname")) return -KEY_getsockname;
3871 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3873 else if (*d == 'g') {
3874 if (strEQ(d,"grent")) return -KEY_getgrent;
3875 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3876 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3878 else if (*d == 'l') {
3879 if (strEQ(d,"login")) return -KEY_getlogin;
3881 else if (strEQ(d,"c")) return -KEY_getc;
3886 if (strEQ(d,"gt")) return -KEY_gt;
3887 if (strEQ(d,"ge")) return -KEY_ge;
3890 if (strEQ(d,"grep")) return KEY_grep;
3891 if (strEQ(d,"goto")) return KEY_goto;
3892 if (strEQ(d,"glob")) return -KEY_glob;
3895 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3900 if (strEQ(d,"hex")) return -KEY_hex;
3905 if (strEQ(d,"if")) return KEY_if;
3908 if (strEQ(d,"int")) return -KEY_int;
3911 if (strEQ(d,"index")) return -KEY_index;
3912 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3917 if (strEQ(d,"join")) return -KEY_join;
3921 if (strEQ(d,"keys")) return KEY_keys;
3922 if (strEQ(d,"kill")) return -KEY_kill;
3927 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3928 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3934 if (strEQ(d,"lt")) return -KEY_lt;
3935 if (strEQ(d,"le")) return -KEY_le;
3936 if (strEQ(d,"lc")) return -KEY_lc;
3939 if (strEQ(d,"log")) return -KEY_log;
3942 if (strEQ(d,"last")) return KEY_last;
3943 if (strEQ(d,"link")) return -KEY_link;
3946 if (strEQ(d,"local")) return KEY_local;
3947 if (strEQ(d,"lstat")) return -KEY_lstat;
3950 if (strEQ(d,"length")) return -KEY_length;
3951 if (strEQ(d,"listen")) return -KEY_listen;
3954 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3957 if (strEQ(d,"localtime")) return -KEY_localtime;
3963 case 1: return KEY_m;
3965 if (strEQ(d,"my")) return KEY_my;
3968 if (strEQ(d,"map")) return KEY_map;
3971 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3974 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3975 if (strEQ(d,"msgget")) return -KEY_msgget;
3976 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3977 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3982 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3985 if (strEQ(d,"next")) return KEY_next;
3986 if (strEQ(d,"ne")) return -KEY_ne;
3987 if (strEQ(d,"not")) return -KEY_not;
3988 if (strEQ(d,"no")) return KEY_no;
3993 if (strEQ(d,"or")) return -KEY_or;
3996 if (strEQ(d,"ord")) return -KEY_ord;
3997 if (strEQ(d,"oct")) return -KEY_oct;
4000 if (strEQ(d,"open")) return -KEY_open;
4003 if (strEQ(d,"opendir")) return -KEY_opendir;
4010 if (strEQ(d,"pop")) return KEY_pop;
4011 if (strEQ(d,"pos")) return KEY_pos;
4014 if (strEQ(d,"push")) return KEY_push;
4015 if (strEQ(d,"pack")) return -KEY_pack;
4016 if (strEQ(d,"pipe")) return -KEY_pipe;
4019 if (strEQ(d,"print")) return KEY_print;
4022 if (strEQ(d,"printf")) return KEY_printf;
4025 if (strEQ(d,"package")) return KEY_package;
4028 if (strEQ(d,"prototype")) return KEY_prototype;
4033 if (strEQ(d,"q")) return KEY_q;
4034 if (strEQ(d,"qq")) return KEY_qq;
4035 if (strEQ(d,"qw")) return KEY_qw;
4036 if (strEQ(d,"qx")) return KEY_qx;
4038 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
4043 if (strEQ(d,"ref")) return -KEY_ref;
4046 if (strEQ(d,"read")) return -KEY_read;
4047 if (strEQ(d,"rand")) return -KEY_rand;
4048 if (strEQ(d,"recv")) return -KEY_recv;
4049 if (strEQ(d,"redo")) return KEY_redo;
4052 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4053 if (strEQ(d,"reset")) return -KEY_reset;
4056 if (strEQ(d,"return")) return KEY_return;
4057 if (strEQ(d,"rename")) return -KEY_rename;
4058 if (strEQ(d,"rindex")) return -KEY_rindex;
4061 if (strEQ(d,"require")) return -KEY_require;
4062 if (strEQ(d,"reverse")) return -KEY_reverse;
4063 if (strEQ(d,"readdir")) return -KEY_readdir;
4066 if (strEQ(d,"readlink")) return -KEY_readlink;
4067 if (strEQ(d,"readline")) return -KEY_readline;
4068 if (strEQ(d,"readpipe")) return -KEY_readpipe;
4071 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
4077 case 0: return KEY_s;
4079 if (strEQ(d,"scalar")) return KEY_scalar;
4084 if (strEQ(d,"seek")) return -KEY_seek;
4085 if (strEQ(d,"send")) return -KEY_send;
4088 if (strEQ(d,"semop")) return -KEY_semop;
4091 if (strEQ(d,"select")) return -KEY_select;
4092 if (strEQ(d,"semctl")) return -KEY_semctl;
4093 if (strEQ(d,"semget")) return -KEY_semget;
4096 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4097 if (strEQ(d,"seekdir")) return -KEY_seekdir;
4100 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4101 if (strEQ(d,"setgrent")) return -KEY_setgrent;
4104 if (strEQ(d,"setnetent")) return -KEY_setnetent;
4107 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4108 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4109 if (strEQ(d,"setservent")) return -KEY_setservent;
4112 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4113 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
4120 if (strEQ(d,"shift")) return KEY_shift;
4123 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4124 if (strEQ(d,"shmget")) return -KEY_shmget;
4127 if (strEQ(d,"shmread")) return -KEY_shmread;
4130 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4131 if (strEQ(d,"shutdown")) return -KEY_shutdown;
4136 if (strEQ(d,"sin")) return -KEY_sin;
4139 if (strEQ(d,"sleep")) return -KEY_sleep;
4142 if (strEQ(d,"sort")) return KEY_sort;
4143 if (strEQ(d,"socket")) return -KEY_socket;
4144 if (strEQ(d,"socketpair")) return -KEY_socketpair;
4147 if (strEQ(d,"split")) return KEY_split;
4148 if (strEQ(d,"sprintf")) return -KEY_sprintf;
4149 if (strEQ(d,"splice")) return KEY_splice;
4152 if (strEQ(d,"sqrt")) return -KEY_sqrt;
4155 if (strEQ(d,"srand")) return -KEY_srand;
4158 if (strEQ(d,"stat")) return -KEY_stat;
4159 if (strEQ(d,"study")) return KEY_study;
4162 if (strEQ(d,"substr")) return -KEY_substr;
4163 if (strEQ(d,"sub")) return KEY_sub;
4168 if (strEQ(d,"system")) return -KEY_system;
4171 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4172 if (strEQ(d,"sysread")) return -KEY_sysread;
4173 if (strEQ(d,"symlink")) return -KEY_symlink;
4174 if (strEQ(d,"syscall")) return -KEY_syscall;
4177 if (strEQ(d,"syswrite")) return -KEY_syswrite;
4186 if (strEQ(d,"tr")) return KEY_tr;
4189 if (strEQ(d,"tie")) return KEY_tie;
4192 if (strEQ(d,"tell")) return -KEY_tell;
4193 if (strEQ(d,"tied")) return KEY_tied;
4194 if (strEQ(d,"time")) return -KEY_time;
4197 if (strEQ(d,"times")) return -KEY_times;
4200 if (strEQ(d,"telldir")) return -KEY_telldir;
4203 if (strEQ(d,"truncate")) return -KEY_truncate;
4210 if (strEQ(d,"uc")) return -KEY_uc;
4213 if (strEQ(d,"use")) return KEY_use;
4216 if (strEQ(d,"undef")) return KEY_undef;
4217 if (strEQ(d,"until")) return KEY_until;
4218 if (strEQ(d,"untie")) return KEY_untie;
4219 if (strEQ(d,"utime")) return -KEY_utime;
4220 if (strEQ(d,"umask")) return -KEY_umask;
4223 if (strEQ(d,"unless")) return KEY_unless;
4224 if (strEQ(d,"unpack")) return -KEY_unpack;
4225 if (strEQ(d,"unlink")) return -KEY_unlink;
4228 if (strEQ(d,"unshift")) return KEY_unshift;
4229 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
4234 if (strEQ(d,"values")) return -KEY_values;
4235 if (strEQ(d,"vec")) return -KEY_vec;
4240 if (strEQ(d,"warn")) return -KEY_warn;
4241 if (strEQ(d,"wait")) return -KEY_wait;
4244 if (strEQ(d,"while")) return KEY_while;
4245 if (strEQ(d,"write")) return -KEY_write;
4248 if (strEQ(d,"waitpid")) return -KEY_waitpid;
4251 if (strEQ(d,"wantarray")) return -KEY_wantarray;
4256 if (len == 1) return -KEY_x;
4257 if (strEQ(d,"xor")) return -KEY_xor;
4260 if (len == 1) return KEY_y;
4269 checkcomma(s,name,what)
4276 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
4278 for (w = s+2; *w && level; w++) {
4285 for (; *w && isSPACE(*w); w++) ;
4286 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
4287 warn("%s (...) interpreted as function",name);
4289 while (s < bufend && isSPACE(*s))
4293 while (s < bufend && isSPACE(*s))
4295 if (isIDFIRST(*s)) {
4299 while (s < bufend && isSPACE(*s))
4304 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
4308 croak("No comma allowed after %s", what);
4314 scan_word(s, dest, allow_package, slp)
4320 register char *d = dest;
4324 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4329 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4342 scan_ident(s,send,dest,ck_uni)
4344 register char *send;
4352 if (lex_brackets == 0)
4365 else if (*s == '\'' && isIDFIRST(s[1])) {
4370 else if (*s == ':' && s[1] == ':') {
4381 if (lex_state != LEX_NORMAL)
4382 lex_state = LEX_INTERPENDMAYBE;
4385 if (*s == '$' && s[1] &&
4386 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
4397 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
4402 if (isSPACE(s[-1])) {
4405 if (ch != ' ' && ch != '\t') {
4411 if (isIDFIRST(*d)) {
4413 while (isALNUM(*s) || *s == ':')
4416 while (s < send && (*s == ' ' || *s == '\t')) s++;
4417 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
4418 if (dowarn && keyword(dest, d - dest)) {
4419 char *brack = *s == '[' ? "[...]" : "{...}";
4420 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4421 funny, dest, brack, funny, dest, brack);
4423 lex_fakebrack = lex_brackets+1;
4425 lex_brackstack[lex_brackets++] = XOPERATOR;
4431 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4432 lex_state = LEX_INTERPEND;
4436 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4437 warn("Ambiguous use of %c{%s} resolved to %c%s",
4438 funny, dest, funny, dest);
4441 s = bracket; /* let the parser handle it */
4445 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4446 lex_state = LEX_INTERPEND;
4450 void pmflag(pmfl,ch)
4457 *pmfl |= PMf_GLOBAL;
4461 *pmfl |= PMf_MULTILINE;
4463 *pmfl |= PMf_SINGLELINE;
4465 *pmfl |= PMf_EXTENDED;
4475 s = scan_str(start);
4478 SvREFCNT_dec(lex_stuff);
4480 croak("Search pattern not terminated");
4483 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4484 if (multi_open == '?')
4485 pm->op_pmflags |= PMf_ONCE;
4486 while (*s && strchr("iogmsx", *s))
4487 pmflag(&pm->op_pmflags,*s++);
4488 pm->op_pmpermflags = pm->op_pmflags;
4491 yylval.ival = OP_MATCH;
4504 yylval.ival = OP_NULL;
4506 s = scan_str(start);
4510 SvREFCNT_dec(lex_stuff);
4512 croak("Substitution pattern not terminated");
4515 if (s[-1] == multi_open)
4518 first_start = multi_start;
4522 SvREFCNT_dec(lex_stuff);
4525 SvREFCNT_dec(lex_repl);
4527 croak("Substitution replacement not terminated");
4529 multi_start = first_start; /* so whole substitution is taken together */
4531 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4532 while (*s && strchr("iogmsex", *s)) {
4538 pmflag(&pm->op_pmflags,*s++);
4543 pm->op_pmflags |= PMf_EVAL;
4544 repl = newSVpv("",0);
4546 sv_catpv(repl, es ? "eval " : "do ");
4547 sv_catpvn(repl, "{ ", 2);
4548 sv_catsv(repl, lex_repl);
4549 sv_catpvn(repl, " };", 2);
4550 SvCOMPILED_on(repl);
4551 SvREFCNT_dec(lex_repl);
4555 pm->op_pmpermflags = pm->op_pmflags;
4557 yylval.ival = OP_SUBST;
4565 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4566 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4568 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4569 pm->op_pmflags |= PMf_SCANFIRST;
4570 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4571 pm->op_pmslen = SvCUR(pm->op_pmshort);
4573 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4574 if (pm->op_pmshort &&
4575 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4577 if (pm->op_pmflags & PMf_SCANFIRST) {
4578 SvREFCNT_dec(pm->op_pmshort);
4579 pm->op_pmshort = Nullsv;
4582 SvREFCNT_dec(pm->op_pmregexp->regmust);
4583 pm->op_pmregexp->regmust = Nullsv;
4587 /* promote the better string */
4588 if ((!pm->op_pmshort && !(pm->op_pmregexp->reganch & ROPT_ANCH)) ||
4589 ((pm->op_pmflags & PMf_SCANFIRST) &&
4590 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
4591 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4592 pm->op_pmshort = pm->op_pmregexp->regmust;
4593 pm->op_pmslen = SvCUR(pm->op_pmshort);
4594 pm->op_pmregexp->regmust = Nullsv;
4595 pm->op_pmflags |= PMf_SCANFIRST;
4611 yylval.ival = OP_NULL;
4613 s = scan_str(start);
4616 SvREFCNT_dec(lex_stuff);
4618 croak("Translation pattern not terminated");
4620 if (s[-1] == multi_open)
4626 SvREFCNT_dec(lex_stuff);
4629 SvREFCNT_dec(lex_repl);
4631 croak("Translation replacement not terminated");
4634 New(803,tbl,256,short);
4635 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4637 complement = delete = squash = 0;
4638 while (*s == 'c' || *s == 'd' || *s == 's') {
4640 complement = OPpTRANS_COMPLEMENT;
4642 delete = OPpTRANS_DELETE;
4644 squash = OPpTRANS_SQUASH;
4647 op->op_private = delete|squash|complement;
4650 yylval.ival = OP_TRANS;
4659 I32 op_type = OP_SCALAR;
4665 int outer = (rsfp && !lex_inwhat);
4671 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4672 if (*peek && strchr("`'\"",*peek)) {
4675 s = cpytill(d,s,bufend,term,&len);
4686 deprecate("bare << to mean <<\"\"");
4689 } /* assuming tokenbuf won't clobber */
4694 if (outer || !(d=ninstr(s,bufend,d,d+1)))
4695 herewas = newSVpv(s,bufend-s);
4697 s--, herewas = newSVpv(s,d-s);
4698 s += SvCUR(herewas);
4700 tmpstr = NEWSV(87,80);
4701 sv_upgrade(tmpstr, SVt_PVIV);
4706 else if (term == '`') {
4707 op_type = OP_BACKTICK;
4708 SvIVX(tmpstr) = '\\';
4712 multi_start = curcop->cop_line;
4713 multi_open = multi_close = '<';
4717 while (s < bufend &&
4718 (*s != term || memNE(s,tokenbuf,len)) ) {
4723 curcop->cop_line = multi_start;
4724 missingterm(tokenbuf);
4726 sv_setpvn(tmpstr,d+1,s-d);
4728 sv_catpvn(herewas,s,bufend-s);
4729 sv_setsv(linestr,herewas);
4730 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
4731 bufend = SvPVX(linestr) + SvCUR(linestr);
4734 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4735 while (s >= bufend) { /* multiple line string? */
4737 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4738 curcop->cop_line = multi_start;
4739 missingterm(tokenbuf);
4742 if (perldb && curstash != debstash) {
4743 SV *sv = NEWSV(88,0);
4745 sv_upgrade(sv, SVt_PVMG);
4746 sv_setsv(sv,linestr);
4747 av_store(GvAV(curcop->cop_filegv),
4748 (I32)curcop->cop_line,sv);
4750 bufend = SvPVX(linestr) + SvCUR(linestr);
4751 if (*s == term && memEQ(s,tokenbuf,len)) {
4754 sv_catsv(linestr,herewas);
4755 bufend = SvPVX(linestr) + SvCUR(linestr);
4759 sv_catsv(tmpstr,linestr);
4762 multi_end = curcop->cop_line;
4764 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4765 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4766 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4768 SvREFCNT_dec(herewas);
4770 yylval.ival = op_type;
4775 scan_inputsymbol(start)
4778 register char *s = start;
4783 s = cpytill(d, s+1, bufend, '>', &len);
4787 croak("Unterminated <> operator");
4789 if (*d == '$' && d[1]) d++;
4790 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4792 if (d - tokenbuf != len) {
4793 yylval.ival = OP_GLOB;
4795 s = scan_str(start);
4797 croak("Glob not terminated");
4803 (void)strcpy(d,"ARGV");
4806 if (tmp = pad_findmy(d)) {
4807 OP *op = newOP(OP_PADSV, 0);
4809 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4812 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4813 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4814 newUNOP(OP_RV2GV, 0,
4815 newUNOP(OP_RV2SV, 0,
4816 newGVOP(OP_GV, 0, gv))));
4818 yylval.ival = OP_NULL;
4821 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4822 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4823 yylval.ival = OP_NULL;
4835 register char *s = start;
4844 multi_start = curcop->cop_line;
4846 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4851 sv_upgrade(sv, SVt_PVIV);
4853 (void)SvPOK_only(sv); /* validate pointer */
4856 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4857 to = SvPVX(sv)+SvCUR(sv);
4858 if (multi_open == multi_close) {
4859 for (; s < bufend; s++,to++) {
4860 if (*s == '\n' && !rsfp)
4862 if (*s == '\\' && s+1 < bufend && term != '\\') {
4868 else if (*s == term)
4874 for (; s < bufend; s++,to++) {
4875 if (*s == '\n' && !rsfp)
4877 if (*s == '\\' && s+1 < bufend && term != '\\') {
4883 else if (*s == term && --brackets <= 0)
4885 else if (*s == multi_open)
4891 SvCUR_set(sv, to - SvPVX(sv));
4893 if (s < bufend) break; /* string ends on this line? */
4896 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
4898 curcop->cop_line = multi_start;
4902 if (perldb && curstash != debstash) {
4903 SV *sv = NEWSV(88,0);
4905 sv_upgrade(sv, SVt_PVMG);
4906 sv_setsv(sv,linestr);
4907 av_store(GvAV(curcop->cop_filegv),
4908 (I32)curcop->cop_line, sv);
4910 bufend = SvPVX(linestr) + SvCUR(linestr);
4912 multi_end = curcop->cop_line;
4914 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4915 SvLEN_set(sv, SvCUR(sv) + 1);
4916 Renew(SvPVX(sv), SvLEN(sv), char);
4929 register char *s = start;
4939 croak("panic: scan_num");
4944 bool overflowed = FALSE;
4950 else if (s[1] == '.')
4966 yyerror("Illegal octal digit");
4968 case '0': case '1': case '2': case '3': case '4':
4969 case '5': case '6': case '7':
4972 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4973 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4979 if (!overflowed && (n >> shift) != u) {
4980 warn("Integer overflow in %s number",
4981 (shift == 4) ? "hex" : "octal");
4993 case '1': case '2': case '3': case '4': case '5':
4994 case '6': case '7': case '8': case '9': case '.':
4998 while (isDIGIT(*s) || *s == '_') {
5000 if (dowarn && lastub && s - lastub != 3)
5001 warn("Misplaced _ in number");
5007 if (dowarn && lastub && s - lastub != 3)
5008 warn("Misplaced _ in number");
5009 if (*s == '.' && s[1] != '.') {
5012 while (isDIGIT(*s) || *s == '_') {
5019 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
5022 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
5023 if (*s == '+' || *s == '-')
5030 SET_NUMERIC_STANDARD();
5031 value = atof(tokenbuf);
5033 if (!floatit && (double)tryiv == value)
5034 sv_setiv(sv, tryiv);
5036 sv_setnv(sv, value);
5040 yylval.opval = newSVOP(OP_CONST, 0, sv);
5051 SV *stuff = newSVpv("",0);
5052 bool needargs = FALSE;
5055 if (*s == '.' || *s == '}') {
5057 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5061 if (in_eval && !rsfp) {
5062 eol = strchr(s,'\n');
5067 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
5069 for (t = s; t < eol; t++) {
5070 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5072 goto enough; /* ~~ must be first line in formline */
5074 if (*t == '@' || *t == '^')
5077 sv_catpvn(stuff, s, eol-s);
5081 s = filter_gets(linestr, rsfp, 0);
5082 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
5083 bufend = bufptr + SvCUR(linestr);
5086 yyerror("Format not terminated");
5096 lex_state = LEX_NORMAL;
5097 nextval[nexttoke].ival = 0;
5101 lex_state = LEX_FORMLINE;
5102 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5104 nextval[nexttoke].ival = OP_FORMLINE;
5108 SvREFCNT_dec(stuff);
5120 cshlen = strlen(cshname);
5125 start_subparse(is_format, flags)
5129 int oldsavestack_ix = savestack_ix;
5130 CV* outsidecv = compcv;
5134 assert(SvTYPE(compcv) == SVt_PVCV);
5141 SAVESPTR(comppad_name);
5143 SAVEI32(comppad_name_fill);
5144 SAVEI32(min_intro_pending);
5145 SAVEI32(max_intro_pending);
5146 SAVEI32(pad_reset_pending);
5148 compcv = (CV*)NEWSV(1104,0);
5149 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
5150 CvFLAGS(compcv) |= flags;
5153 comppad_name = newAV();
5154 comppad_name_fill = 0;
5155 min_intro_pending = 0;
5156 av_push(comppad, Nullsv);
5157 curpad = AvARRAY(comppad);
5159 subline = curcop->cop_line;
5161 comppadlist = newAV();
5162 AvREAL_off(comppadlist);
5163 av_store(comppadlist, 0, (SV*)comppad_name);
5164 av_store(comppadlist, 1, (SV*)comppad);
5166 CvPADLIST(compcv) = comppadlist;
5167 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
5169 return oldsavestack_ix;
5189 char *context = NULL;
5192 if (!yychar || (yychar == ';' && !rsfp))
5194 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5195 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5196 while (isSPACE(*oldoldbufptr))
5198 context = oldoldbufptr;
5199 contlen = bufptr - oldoldbufptr;
5201 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5202 oldbufptr != bufptr) {
5203 while (isSPACE(*oldbufptr))
5205 context = oldbufptr;
5206 contlen = bufptr - oldbufptr;
5208 else if (yychar > 255)
5209 where = "next token ???";
5210 else if ((yychar & 127) == 127) {
5211 if (lex_state == LEX_NORMAL ||
5212 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5213 where = "at end of line";
5215 where = "within pattern";
5217 where = "within string";
5219 else if (yychar < 32)
5220 (void)sprintf(where = wbuf, "next char ^%c", toCTRL(yychar));
5221 else if (isPRINT_LC(yychar))
5222 (void)sprintf(where = wbuf, "next char %c", yychar);
5224 (void)sprintf(where = wbuf, "next char \\%03o", yychar & 255);
5226 contlen = strlen(where);
5227 (void)sprintf(buf, "%s at %s line %d, ",
5228 s, SvPVX(GvSV(curcop->cop_filegv)), curcop->cop_line);
5230 (void)sprintf(buf+strlen(buf), "near \"%.*s\"\n", contlen, context);
5232 (void)sprintf(buf+strlen(buf), "%s\n", where);
5233 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
5234 sprintf(buf+strlen(buf),
5235 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5236 (int)multi_open,(int)multi_close,(long)multi_start);
5242 sv_catpv(GvSV(errgv),buf);
5244 PerlIO_printf(PerlIO_stderr(), "%s",buf);
5245 if (++error_count >= 10)
5246 croak("%s has too many errors.\n",
5247 SvPVX(GvSV(curcop->cop_filegv)));