3 * Copyright (c) 1991-1994, 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_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
20 static SV *q _((SV *sv));
21 static char *scan_const _((char *start));
22 static char *scan_formline _((char *s));
23 static char *scan_heredoc _((char *s));
24 static char *scan_ident _((char *s, char *send, char *dest, I32 ck_uni));
25 static char *scan_inputsymbol _((char *start));
26 static char *scan_pat _((char *start));
27 static char *scan_str _((char *start));
28 static char *scan_subst _((char *start));
29 static char *scan_trans _((char *start));
30 static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
31 static char *skipspace _((char *s));
32 static void checkcomma _((char *s, char *name, char *what));
33 static void force_ident _((char *s, int kind));
34 static void incline _((char *s));
35 static int intuit_method _((char *s, GV *gv));
36 static int intuit_more _((char *s));
37 static I32 lop _((I32 f, expectation x, char *s));
38 static void missingterm _((char *s));
39 static void no_op _((char *what, char *s));
40 static void set_csh _((void));
41 static I32 sublex_done _((void));
42 static I32 sublex_start _((void));
44 static int uni _((I32 f, char *s));
47 /* The following are arranged oddly so that the guard on the switch statement
48 * can get by with a single comparison (if the compiler is smart enough).
52 #define LEX_INTERPNORMAL 8
53 #define LEX_INTERPCASEMOD 7
54 #define LEX_INTERPSTART 6
55 #define LEX_INTERPEND 5
56 #define LEX_INTERPENDMAYBE 4
57 #define LEX_INTERPCONCAT 3
58 #define LEX_INTERPCONST 2
59 #define LEX_FORMLINE 1
60 #define LEX_KNOWNEXT 0
78 #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
80 #define TOKEN(retval) return (bufptr = s,(int)retval)
81 #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
82 #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
83 #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
84 #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
85 #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
86 #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
87 #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
88 #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
89 #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
90 #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
91 #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
92 #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
93 #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
94 #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
95 #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
96 #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
97 #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
98 #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
99 #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
101 /* This bit of chicanery makes a unary function followed by
102 * a parenthesis into a function with one argument, highest precedence.
104 #define UNI(f) return(yylval.ival = f, \
107 last_uni = oldbufptr, \
109 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
111 #define UNIBRACK(f) return(yylval.ival = f, \
113 last_uni = oldbufptr, \
114 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
116 /* grandfather return to old style */
117 #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
123 if (*bufptr == '=') {
125 if (toketype == ANDAND)
126 yylval.ival = OP_ANDASSIGN;
127 else if (toketype == OROR)
128 yylval.ival = OP_ORASSIGN;
140 char *oldbp = bufptr;
141 bool is_first = (oldbufptr == SvPVX(linestr));
143 sprintf(tmpbuf, "%s found where operator expected", what);
146 warn("\t(Missing semicolon on previous line?)\n");
147 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
149 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
150 if (t < bufptr && isSPACE(*t))
151 warn("\t(Do you need to predeclare %.*s?)\n",
152 t - oldoldbufptr, oldoldbufptr);
156 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
167 char *nl = strrchr(s,'\n');
171 else if (multi_close < 32 || multi_close == 127) {
173 tmpbuf[1] = multi_close ^ 64;
179 *tmpbuf = multi_close;
183 q = strchr(s,'"') ? '\'' : '"';
184 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
192 warn("Use of %s is deprecated", s);
198 deprecate("comma-less variable list");
209 SAVEINT(lex_brackets);
210 SAVEINT(lex_fakebrack);
211 SAVEINT(lex_casemods);
216 SAVEINT(curcop->cop_line);
220 SAVEPPTR(oldoldbufptr);
222 SAVEPPTR(lex_brackstack);
223 SAVEPPTR(lex_casestack);
226 lex_state = LEX_NORMAL;
231 New(899, lex_brackstack, 120, char);
232 New(899, lex_casestack, 12, char);
233 SAVEFREEPV(lex_brackstack);
234 SAVEFREEPV(lex_casestack);
236 *lex_casestack = '\0';
240 SvREFCNT_dec(lex_stuff);
243 SvREFCNT_dec(lex_repl);
248 if (SvREADONLY(linestr))
249 linestr = sv_2mortal(newSVsv(linestr));
250 s = SvPV(linestr, len);
251 if (len && s[len-1] != ';') {
252 if (!(SvFLAGS(linestr) & SVs_TEMP))
253 linestr = sv_2mortal(newSVsv(linestr));
254 sv_catpvn(linestr, "\n;", 2);
257 oldoldbufptr = oldbufptr = bufptr = SvPVX(linestr);
258 bufend = bufptr + SvCUR(linestr);
283 while (*s == ' ' || *s == '\t') s++;
284 if (strnEQ(s, "line ", 5)) {
293 while (*s == ' ' || *s == '\t')
295 if (*s == '"' && (t = strchr(s+1, '"')))
299 return; /* false alarm */
300 for (t = s; !isSPACE(*t); t++) ;
305 curcop->cop_filegv = gv_fetchfile(s);
307 curcop->cop_filegv = gv_fetchfile(origfilename);
309 curcop->cop_line = atoi(n)-1;
316 if (lex_formbrack && lex_brackets <= lex_formbrack) {
317 while (s < bufend && (*s == ' ' || *s == '\t'))
322 while (s < bufend && isSPACE(*s))
324 if (s < bufend && *s == '#') {
325 while (s < bufend && *s != '\n')
330 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
332 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) {
333 if (minus_n || minus_p) {
334 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
335 sv_catpv(linestr,";}");
336 minus_n = minus_p = 0;
339 sv_setpv(linestr,";");
340 oldoldbufptr = oldbufptr = bufptr = s = SvPVX(linestr);
341 bufend = SvPVX(linestr) + SvCUR(linestr);
342 if (preprocess && !in_eval)
343 (void)my_pclose(rsfp);
344 else if ((FILE*)rsfp == stdin)
351 oldoldbufptr = oldbufptr = bufptr = s;
352 bufend = bufptr + SvCUR(linestr);
354 if (perldb && curstash != debstash) {
355 SV *sv = NEWSV(85,0);
357 sv_upgrade(sv, SVt_PVMG);
358 sv_setsv(sv,linestr);
359 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
370 if (oldoldbufptr != last_uni)
372 while (isSPACE(*last_uni))
374 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
375 if ((t = strchr(s, '(')) && t < bufptr)
379 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
386 #define UNI(f) return uni(f,s)
396 last_uni = oldbufptr;
407 #endif /* CRIPPLED_CC */
409 #define LOP(f,x) return lop(f,x,s)
421 last_lop = oldbufptr;
438 nexttype[nexttoke] = type;
440 if (lex_state != LEX_KNOWNEXT) {
441 lex_defer = lex_state;
443 lex_state = LEX_KNOWNEXT;
448 force_word(start,token,check_keyword,allow_pack,allow_tick)
449 register char *start;
458 start = skipspace(start);
461 (allow_pack && *s == ':') ||
462 (allow_tick && *s == '\'') )
464 s = scan_word(s, tokenbuf, allow_pack, &len);
465 if (check_keyword && keyword(tokenbuf, len))
467 if (token == METHOD) {
477 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
478 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
490 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
491 nextval[nexttoke].opval = op;
494 op->op_private = OPpCONST_ENTERED;
496 kind == '$' ? SVt_PV :
497 kind == '@' ? SVt_PVAV :
498 kind == '%' ? SVt_PVHV :
517 s = SvPV_force(sv, len);
521 while (s < send && *s != '\\')
528 if (s + 1 < send && (s[1] == '\\'))
529 s++; /* all that, just for this */
534 SvCUR_set(sv, d - SvPVX(sv));
542 register I32 op_type = yylval.ival;
544 if (op_type == OP_NULL) {
545 yylval.opval = lex_op;
549 if (op_type == OP_CONST || op_type == OP_READLINE) {
550 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
557 SAVEINT(lex_brackets);
558 SAVEINT(lex_fakebrack);
559 SAVEINT(lex_casemods);
564 SAVEINT(curcop->cop_line);
567 SAVEPPTR(oldoldbufptr);
569 SAVEPPTR(lex_brackstack);
570 SAVEPPTR(lex_casestack);
575 bufend = bufptr = oldbufptr = oldoldbufptr = SvPVX(linestr);
576 bufend += SvCUR(linestr);
582 New(899, lex_brackstack, 120, char);
583 New(899, lex_casestack, 12, char);
584 SAVEFREEPV(lex_brackstack);
585 SAVEFREEPV(lex_casestack);
587 *lex_casestack = '\0';
589 lex_state = LEX_INTERPCONCAT;
590 curcop->cop_line = multi_start;
592 lex_inwhat = op_type;
593 if (op_type == OP_MATCH || op_type == OP_SUBST)
601 yylval.opval = lex_op;
614 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
618 if (lex_casemods) { /* oops, we've got some unbalanced parens */
619 lex_state = LEX_INTERPCASEMOD;
623 /* Is there a right-hand side to take care of? */
624 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
627 bufend = bufptr = oldbufptr = oldoldbufptr = SvPVX(linestr);
628 bufend += SvCUR(linestr);
634 *lex_casestack = '\0';
636 if (SvCOMPILED(lex_repl)) {
637 lex_state = LEX_INTERPNORMAL;
641 lex_state = LEX_INTERPCONCAT;
647 bufend = SvPVX(linestr);
648 bufend += SvCUR(linestr);
658 register char *send = bufend;
659 SV *sv = NEWSV(93, send - start);
660 register char *s = start;
661 register char *d = SvPVX(sv);
662 bool dorange = FALSE;
666 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
667 : (lex_inwhat & OP_TRANS)
671 while (s < send || dorange) {
672 if (lex_inwhat == OP_TRANS) {
677 SvGROW(sv, SvLEN(sv) + 256);
681 for (i = (*d & 0377); i <= max; i++)
686 else if (*s == '-' && s+1 < send && s != start) {
691 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
692 while (s < send && *s != ')')
695 else if (*s == '#' && lex_inpat &&
696 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
697 while (s+1 < send && *s != '\n')
700 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
702 else if (*s == '$') {
703 if (!lex_inpat) /* not a regexp, so $ must be var */
705 if (s + 1 < send && !strchr(")| \n\t", s[1]))
706 break; /* in regexp, $ might be tail anchor */
708 if (*s == '\\' && s+1 < send) {
710 if (*s && strchr(leave, *s)) {
715 if (lex_inwhat == OP_SUBST && !lex_inpat &&
716 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
719 warn("\\%c better written as $%c", *s, *s);
723 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
729 if (lex_inwhat == OP_TRANS) {
737 case '0': case '1': case '2': case '3':
738 case '4': case '5': case '6': case '7':
739 *d++ = scan_oct(s, 3, &len);
743 *d++ = scan_hex(++s, 2, &len);
781 SvCUR_set(sv, d - SvPVX(sv));
784 if (SvCUR(sv) + 5 < SvLEN(sv)) {
785 SvLEN_set(sv, SvCUR(sv) + 1);
786 Renew(SvPVX(sv), SvLEN(sv), char);
789 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
795 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
802 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
804 if (*s != '{' && *s != '[')
809 /* In a pattern, so maybe we have {n,m}. */
826 /* On the other hand, maybe we have a character class */
829 if (*s == ']' || *s == '^')
832 int weight = 2; /* let's weigh the evidence */
834 unsigned char un_char = 0, last_un_char;
835 char *send = strchr(s,']');
838 if (!send) /* has to be an expression */
844 else if (isDIGIT(*s)) {
846 if (isDIGIT(s[1]) && s[2] == ']')
852 for (; s < send; s++) {
853 last_un_char = un_char;
854 un_char = (unsigned char)*s;
859 weight -= seen[un_char] * 10;
861 scan_ident(s,send,tmpbuf,FALSE);
862 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
867 else if (*s == '$' && s[1] &&
868 strchr("[#!%*<>()-=",s[1])) {
869 if (/*{*/ strchr("])} =",s[2]))
878 if (strchr("wds]",s[1]))
880 else if (seen['\''] || seen['"'])
882 else if (strchr("rnftbxcav",s[1]))
884 else if (isDIGIT(s[1])) {
886 while (s[1] && isDIGIT(s[1]))
896 if (strchr("aA01! ",last_un_char))
898 if (strchr("zZ79~",s[1]))
902 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
903 isALPHA(*s) && s[1] && isALPHA(s[1])) {
908 if (keyword(tmpbuf, d - tmpbuf))
911 if (un_char == last_un_char + 1)
913 weight -= seen[un_char];
918 if (weight >= 0) /* probably a character class */
926 intuit_method(start,gv)
930 char *s = start + (*start == '$');
941 s = scan_word(s, tmpbuf, TRUE, &len);
943 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
948 return *s == '(' ? FUNCMETH : METHOD;
950 if (!keyword(tmpbuf, len)) {
951 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
952 if (indirgv && GvCV(indirgv))
954 /* filehandle or package name makes it a method */
955 if (!gv || GvIO(indirgv) || gv_stashpv(tmpbuf, FALSE)) {
957 nextval[nexttoke].opval =
958 (OP*)newSVOP(OP_CONST, 0,
960 nextval[nexttoke].opval->op_private =
965 return *s == '(' ? FUNCMETH : METHOD;
975 char *pdb = getenv("PERL5DB");
979 return "BEGIN { require 'perl5db.pl' }";
985 /* Encrypted script support: cryptswitch_add() may be called to */
986 /* define a function which may manipulate the input stream */
987 /* (via popen() etc) to decode the input if required. */
988 /* At the moment we only allow one cryptswitch function. */
990 cryptswitch_add(funcp)
993 cryptswitch_fp = funcp;
998 static char* exp_name[] =
999 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
1002 extern int yychar; /* last token */
1012 switch (lex_state) {
1014 case LEX_NORMAL: /* Some compilers will produce faster */
1015 case LEX_INTERPNORMAL: /* code if we comment these out. */
1021 yylval = nextval[nexttoke];
1023 lex_state = lex_defer;
1024 expect = lex_expect;
1025 lex_defer = LEX_NORMAL;
1027 return(nexttype[nexttoke]);
1029 case LEX_INTERPCASEMOD:
1031 if (bufptr != bufend && *bufptr != '\\')
1032 croak("panic: INTERPCASEMOD");
1034 if (bufptr == bufend || bufptr[1] == 'E') {
1037 oldmod = lex_casestack[--lex_casemods];
1038 lex_casestack[lex_casemods] = '\0';
1039 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1041 lex_state = LEX_INTERPCONCAT;
1045 if (bufptr != bufend)
1047 lex_state = LEX_INTERPCONCAT;
1052 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1053 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1054 if (strchr("LU", *s) &&
1055 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1057 lex_casestack[--lex_casemods] = '\0';
1060 if (lex_casemods > 10) {
1061 char* newlb = (char*)realloc(lex_casestack, lex_casemods + 2);
1062 if (newlb != lex_casestack) {
1064 lex_casestack = newlb;
1067 lex_casestack[lex_casemods++] = *s;
1068 lex_casestack[lex_casemods] = '\0';
1069 lex_state = LEX_INTERPCONCAT;
1070 nextval[nexttoke].ival = 0;
1073 nextval[nexttoke].ival = OP_LCFIRST;
1075 nextval[nexttoke].ival = OP_UCFIRST;
1077 nextval[nexttoke].ival = OP_LC;
1079 nextval[nexttoke].ival = OP_UC;
1081 nextval[nexttoke].ival = OP_QUOTEMETA;
1083 croak("panic: yylex");
1095 case LEX_INTERPSTART:
1096 if (bufptr == bufend)
1097 return sublex_done();
1099 lex_dojoin = (*bufptr == '@');
1100 lex_state = LEX_INTERPNORMAL;
1102 nextval[nexttoke].ival = 0;
1104 force_ident("\"", '$');
1105 nextval[nexttoke].ival = 0;
1107 nextval[nexttoke].ival = 0;
1109 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1120 case LEX_INTERPENDMAYBE:
1121 if (intuit_more(bufptr)) {
1122 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1130 lex_state = LEX_INTERPCONCAT;
1134 case LEX_INTERPCONCAT:
1137 croak("panic: INTERPCONCAT");
1139 if (bufptr == bufend)
1140 return sublex_done();
1142 if (SvIVX(linestr) == '\'') {
1143 SV *sv = newSVsv(linestr);
1146 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1150 s = scan_const(bufptr);
1152 lex_state = LEX_INTERPCASEMOD;
1154 lex_state = LEX_INTERPSTART;
1158 nextval[nexttoke] = yylval;
1171 lex_state = LEX_NORMAL;
1172 s = scan_formline(bufptr);
1179 oldoldbufptr = oldbufptr;
1182 fprintf(stderr,"### Tokener expecting %s at %s\n", exp_name[expect], s);
1188 warn("Unrecognized character \\%03o ignored", *s++ & 255);
1192 goto fake_eof; /* emulate EOF on ^D or ^Z */
1196 yyerror("Missing right bracket");
1200 goto retry; /* ignore stray nulls */
1203 if (!in_eval && !preambled) {
1205 sv_setpv(linestr,incl_perldb());
1206 if (autoboot_preamble)
1207 sv_catpv(linestr, autoboot_preamble);
1208 if (minus_n || minus_p) {
1209 sv_catpv(linestr, "LINE: while (<>) {");
1211 sv_catpv(linestr,"chomp;");
1215 if ( splitstr[0] == '/' ||
1216 splitstr[0] == '\'' ||
1217 splitstr[0] == '"' )
1218 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1220 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1221 sv_catpv(linestr,tmpbuf1);
1224 sv_catpv(linestr,"@F=split(' ');");
1227 sv_catpv(linestr, "\n");
1228 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1229 bufend = SvPVX(linestr) + SvCUR(linestr);
1230 if (perldb && curstash != debstash) {
1231 SV *sv = NEWSV(85,0);
1233 sv_upgrade(sv, SVt_PVMG);
1234 sv_setsv(sv,linestr);
1235 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1239 /* Give cryptswitch a chance. Note that cryptswitch_fp may */
1240 /* be either be called once if it redirects rsfp and unregisters */
1241 /* itself, or it may be called on every line if it loads linestr. */
1242 if (cryptswitch_fp && (*cryptswitch_fp)()) {
1243 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1244 bufend = SvPVX(linestr) + SvCUR(linestr);
1248 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) {
1251 if (preprocess && !in_eval)
1252 (void)my_pclose(rsfp);
1253 else if ((FILE*)rsfp == stdin)
1259 if (!in_eval && (minus_n || minus_p)) {
1260 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1261 sv_catpv(linestr,";}");
1262 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1263 bufend = SvPVX(linestr) + SvCUR(linestr);
1264 minus_n = minus_p = 0;
1267 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1268 sv_setpv(linestr,"");
1269 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1272 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1275 /* Incest with pod. */
1276 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1277 sv_setpv(linestr, "");
1278 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1279 bufend = SvPVX(linestr) + SvCUR(linestr);
1284 } while (doextract);
1285 oldoldbufptr = oldbufptr = bufptr = s;
1286 if (perldb && curstash != debstash) {
1287 SV *sv = NEWSV(85,0);
1289 sv_upgrade(sv, SVt_PVMG);
1290 sv_setsv(sv,linestr);
1291 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1293 bufend = SvPVX(linestr) + SvCUR(linestr);
1294 if (curcop->cop_line == 1) {
1295 while (s < bufend && isSPACE(*s))
1297 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1299 if (!in_eval && *s == '#' && s[1] == '!') {
1300 d = instr(s,"perl -");
1302 d = instr(s,"perl");
1305 !instr(s,"indir") &&
1306 instr(origargv[0],"perl"))
1315 while (s < bufend && !isSPACE(*s))
1318 while (s < bufend && isSPACE(*s))
1321 Newz(899,newargv,origargc+3,char*);
1323 while (s < bufend && !isSPACE(*s))
1326 Copy(origargv+1, newargv+2, origargc+1, char*);
1332 croak("Can't exec %s", cmd);
1335 int oldpdb = perldb;
1339 while (*d && !isSPACE(*d)) d++;
1340 while (*d == ' ') d++;
1343 while (d = moreswitches(d)) ;
1344 if (perldb && !oldpdb ||
1348 sv_setpv(linestr, "");
1349 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1350 bufend = SvPVX(linestr) + SvCUR(linestr);
1353 (void)gv_fetchfile(origfilename);
1360 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1362 lex_state = LEX_FORMLINE;
1366 case ' ': case '\t': case '\f': case '\r': case 013:
1371 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1373 while (s < d && *s != '\n')
1378 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1380 lex_state = LEX_FORMLINE;
1390 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1395 while (s < bufend && (*s == ' ' || *s == '\t'))
1398 if (strnEQ(s,"=>",2)) {
1400 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1402 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1403 OPERATOR('-'); /* unary minus */
1405 last_uni = oldbufptr;
1406 last_lop_op = OP_FTEREAD; /* good enough */
1408 case 'r': FTST(OP_FTEREAD);
1409 case 'w': FTST(OP_FTEWRITE);
1410 case 'x': FTST(OP_FTEEXEC);
1411 case 'o': FTST(OP_FTEOWNED);
1412 case 'R': FTST(OP_FTRREAD);
1413 case 'W': FTST(OP_FTRWRITE);
1414 case 'X': FTST(OP_FTREXEC);
1415 case 'O': FTST(OP_FTROWNED);
1416 case 'e': FTST(OP_FTIS);
1417 case 'z': FTST(OP_FTZERO);
1418 case 's': FTST(OP_FTSIZE);
1419 case 'f': FTST(OP_FTFILE);
1420 case 'd': FTST(OP_FTDIR);
1421 case 'l': FTST(OP_FTLINK);
1422 case 'p': FTST(OP_FTPIPE);
1423 case 'S': FTST(OP_FTSOCK);
1424 case 'u': FTST(OP_FTSUID);
1425 case 'g': FTST(OP_FTSGID);
1426 case 'k': FTST(OP_FTSVTX);
1427 case 'b': FTST(OP_FTBLK);
1428 case 'c': FTST(OP_FTCHR);
1429 case 't': FTST(OP_FTTTY);
1430 case 'T': FTST(OP_FTTEXT);
1431 case 'B': FTST(OP_FTBINARY);
1432 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1433 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1434 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1436 croak("Unrecognized file test: -%c", tmp);
1443 if (expect == XOPERATOR)
1448 else if (*s == '>') {
1451 if (isIDFIRST(*s)) {
1452 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1460 if (expect == XOPERATOR)
1463 if (isSPACE(*s) || !isSPACE(*bufptr))
1465 OPERATOR('-'); /* unary minus */
1472 if (expect == XOPERATOR)
1477 if (expect == XOPERATOR)
1480 if (isSPACE(*s) || !isSPACE(*bufptr))
1486 if (expect != XOPERATOR) {
1487 s = scan_ident(s, bufend, tokenbuf, TRUE);
1489 force_ident(tokenbuf, '*');
1502 if (expect != XOPERATOR) {
1503 s = scan_ident(s, bufend, tokenbuf + 1, TRUE);
1508 if (strchr(tokenbuf,':'))
1509 croak(no_myglob,tokenbuf);
1510 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1511 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1512 force_next(PRIVATEREF);
1515 if (!strchr(tokenbuf,':')) {
1516 if (tmp = pad_findmy(tokenbuf)) {
1517 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1518 nextval[nexttoke].opval->op_targ = tmp;
1519 force_next(PRIVATEREF);
1523 force_ident(tokenbuf + 1, *tokenbuf);
1551 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1552 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1557 if (curcop->cop_line < copline)
1558 copline = curcop->cop_line;
1566 if (lex_brackets <= 0)
1567 yyerror("Unmatched right bracket");
1570 if (lex_state == LEX_INTERPNORMAL) {
1571 if (lex_brackets == 0) {
1572 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1573 lex_state = LEX_INTERPEND;
1580 if (lex_brackets > 100) {
1581 char* newlb = (char*)realloc(lex_brackstack, lex_brackets + 1);
1582 if (newlb != lex_brackstack) {
1584 lex_brackstack = newlb;
1589 if (lex_formbrack) {
1593 if (oldoldbufptr == last_lop)
1594 lex_brackstack[lex_brackets++] = XTERM;
1596 lex_brackstack[lex_brackets++] = XOPERATOR;
1597 OPERATOR(HASHBRACK);
1600 while (s < bufend && (*s == ' ' || *s == '\t'))
1602 if (s < bufend && isALPHA(*s)) {
1603 d = scan_word(s, tokenbuf, FALSE, &len);
1604 while (d < bufend && (*d == ' ' || *d == '\t'))
1608 (keyword(tokenbuf, len) ||
1609 perl_get_cv(tokenbuf, FALSE) ))
1610 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1611 tokenbuf, tokenbuf);
1612 s = force_word(s,WORD,FALSE,TRUE,FALSE);
1617 lex_brackstack[lex_brackets++] = XSTATE;
1621 lex_brackstack[lex_brackets++] = XOPERATOR;
1626 if (oldoldbufptr == last_lop)
1627 lex_brackstack[lex_brackets++] = XTERM;
1629 lex_brackstack[lex_brackets++] = XOPERATOR;
1632 OPERATOR(HASHBRACK);
1634 for (t = s; t < bufend && isALPHA(*t); t++) ;
1636 else if (*s == '\'' || *s == '"') {
1643 while (t < bufend && isSPACE(*t))
1645 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1646 OPERATOR(HASHBRACK);
1650 lex_brackstack[lex_brackets-1] = XSTATE;
1656 yylval.ival = curcop->cop_line;
1657 if (isSPACE(*s) || *s == '#')
1658 copline = NOLINE; /* invalidate current command line number */
1663 if (lex_brackets <= 0)
1664 yyerror("Unmatched right bracket");
1666 expect = (expectation)lex_brackstack[--lex_brackets];
1667 if (lex_brackets < lex_formbrack)
1669 if (lex_state == LEX_INTERPNORMAL) {
1670 if (lex_brackets == 0) {
1671 if (lex_fakebrack) {
1672 lex_state = LEX_INTERPEND;
1674 return yylex(); /* ignore fake brackets */
1676 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1677 lex_state = LEX_INTERPEND;
1680 if (lex_brackets < lex_fakebrack) {
1683 return yylex(); /* ignore fake brackets */
1693 if (expect == XOPERATOR) {
1694 if (isALPHA(*s) && bufptr == SvPVX(linestr)) {
1702 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
1705 force_ident(tokenbuf, '&');
1727 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
1728 warn("Reversed %c= operator",tmp);
1730 if (expect == XSTATE && isALPHA(tmp) &&
1731 (s == SvPVX(linestr)+1 || s[-2] == '\n') )
1737 if (lex_brackets < lex_formbrack) {
1739 for (t = s; *t == ' ' || *t == '\t'; t++) ;
1740 if (*t == '\n' || *t == '#') {
1758 if (expect != XOPERATOR) {
1759 if (s[1] != '<' && !strchr(s,'>'))
1762 s = scan_heredoc(s);
1764 s = scan_inputsymbol(s);
1765 TERM(sublex_start());
1770 SHop(OP_LEFT_SHIFT);
1784 SHop(OP_RIGHT_SHIFT);
1791 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
1792 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
1793 if (expect == XOPERATOR) {
1794 if (lex_formbrack && lex_brackets == lex_formbrack) {
1797 return ','; /* grandfather non-comma-format format */
1800 no_op("Array length",s);
1802 else if (!tokenbuf[1])
1804 if (!strchr(tokenbuf+1,':')) {
1806 if (tmp = pad_findmy(tokenbuf)) {
1807 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1808 nextval[nexttoke].opval->op_targ = tmp;
1810 force_next(PRIVATEREF);
1815 force_ident(tokenbuf+1, *tokenbuf);
1818 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
1819 if (expect == XOPERATOR) {
1820 if (lex_formbrack && lex_brackets == lex_formbrack) {
1823 return ','; /* grandfather non-comma-format format */
1829 expectation oldexpect = expect;
1831 /* This kludge not intended to be bulletproof. */
1832 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
1833 yylval.opval = newSVOP(OP_CONST, 0,
1834 newSViv((IV)compiling.cop_arybase));
1835 yylval.opval->op_private = OPpCONST_ARYBASE;
1841 if (*s == '[' && oldexpect != XREF) {
1842 for (t = s+1; isSPACE(*t) || isALNUM(*t) || *t == '$'; t++) ;
1844 bufptr = skipspace(bufptr);
1845 while (t < bufend && *t != ']') t++;
1846 warn("Multidimensional syntax %.*s not supported",
1847 t-bufptr+1, bufptr);
1850 if (*s == '{' && strEQ(tokenbuf, "$SIG") &&
1851 (t = strchr(s,'}')) && (t = strchr(t,'='))) {
1854 for (t++; isSPACE(*t); t++) ;
1855 if (isIDFIRST(*t)) {
1856 t = scan_word(t, tmpbuf, TRUE, &len);
1857 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
1858 warn("You need to quote \"%s\"", tmpbuf);
1863 if (lex_state == LEX_NORMAL && isSPACE(*s)) {
1864 bool islop = (last_lop == oldoldbufptr);
1866 if (!islop || last_lop_op == OP_GREPSTART)
1868 else if (strchr("$@\"'`q", *s))
1869 expect = XTERM; /* e.g. print $fh "foo" */
1870 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
1871 expect = XTERM; /* e.g. print $fh &sub */
1872 else if (isDIGIT(*s))
1873 expect = XTERM; /* e.g. print $fh 3 */
1874 else if (*s == '.' && isDIGIT(s[1]))
1875 expect = XTERM; /* e.g. print $fh .3 */
1876 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
1877 expect = XTERM; /* e.g. print $fh -1 */
1878 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
1879 expect = XTERM; /* print $fh <<"EOF" */
1882 if (strchr(tokenbuf,':'))
1883 croak(no_myglob,tokenbuf);
1884 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1885 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1886 force_next(PRIVATEREF);
1888 else if (!strchr(tokenbuf,':')) {
1889 if (oldexpect != XREF || oldoldbufptr == last_lop) {
1895 if (tmp = pad_findmy(tokenbuf)) {
1896 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1897 nextval[nexttoke].opval->op_targ = tmp;
1898 force_next(PRIVATEREF);
1901 if ((tainting || !euid) &&
1902 !isLOWER(tokenbuf[1]) &&
1903 (isDIGIT(tokenbuf[1]) ||
1904 strchr("&`'+", tokenbuf[1]) ||
1905 instr(tokenbuf,"MATCH") ))
1906 hints |= HINT_BLOCK_SCOPE; /* Can't optimize block out*/
1907 force_ident(tokenbuf+1, *tokenbuf);
1911 force_ident(tokenbuf+1, *tokenbuf);
1915 yyerror("Final $ should be \\$ or $name");
1921 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
1922 if (expect == XOPERATOR)
1930 if (strchr(tokenbuf,':'))
1931 croak(no_myglob,tokenbuf);
1932 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1933 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1934 force_next(PRIVATEREF);
1937 else if (!strchr(tokenbuf,':')) {
1940 if (tmp = pad_findmy(tokenbuf)) {
1941 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1942 nextval[nexttoke].opval->op_targ = tmp;
1943 force_next(PRIVATEREF);
1948 /* Force them to make up their mind on "@foo". */
1949 if (lex_state != LEX_NORMAL &&
1950 ( !(gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV)) ||
1956 sprintf(tmpbuf, "Literal @%s now requires backslash",tokenbuf+1);
1960 /* Warn about @ where they meant $. */
1962 if (*s == '[' || *s == '{') {
1964 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
1966 if (*t == '}' || *t == ']') {
1968 bufptr = skipspace(bufptr);
1969 warn("Scalar value %.*s better written as $%.*s",
1970 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
1974 force_ident(tokenbuf+1, *tokenbuf);
1978 yyerror("Final @ should be \\@ or @name");
1983 case '/': /* may either be division or pattern */
1984 case '?': /* may either be conditional or pattern */
1985 if (expect != XOPERATOR) {
1988 TERM(sublex_start());
1996 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
1997 (s == SvPVX(linestr) || s[-1] == '\n') ) {
2002 if (expect == XOPERATOR || !isDIGIT(s[1])) {
2008 yylval.ival = OPf_SPECIAL;
2014 if (expect != XOPERATOR)
2019 case '0': case '1': case '2': case '3': case '4':
2020 case '5': case '6': case '7': case '8': case '9':
2022 if (expect == XOPERATOR)
2028 if (expect == XOPERATOR) {
2029 if (lex_formbrack && lex_brackets == lex_formbrack) {
2032 return ','; /* grandfather non-comma-format format */
2038 missingterm((char*)0);
2039 yylval.ival = OP_CONST;
2040 TERM(sublex_start());
2044 if (expect == XOPERATOR) {
2045 if (lex_formbrack && lex_brackets == lex_formbrack) {
2048 return ','; /* grandfather non-comma-format format */
2054 missingterm((char*)0);
2055 yylval.ival = OP_STRINGIFY;
2056 TERM(sublex_start());
2060 if (expect == XOPERATOR)
2061 no_op("Backticks",s);
2063 missingterm((char*)0);
2064 yylval.ival = OP_BACKTICK;
2066 TERM(sublex_start());
2070 if (dowarn && lex_inwhat && isDIGIT(*s))
2071 warn("Can't use \\%c to mean $%c in expression", *s, *s);
2072 if (expect == XOPERATOR)
2073 no_op("Backslash",s);
2077 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2113 s = scan_word(s, tokenbuf, FALSE, &len);
2115 tmp = keyword(tokenbuf, len);
2117 /* Is this a word before a => operator? */
2119 while (d < bufend && (*d == ' ' || *d == '\t'))
2120 d++; /* no comments skipped here, or s### is misparsed */
2121 if (strnEQ(d,"=>",2)) {
2123 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2124 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2125 tokenbuf, tokenbuf);
2126 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2127 yylval.opval->op_private = OPpCONST_BARE;
2131 if (tmp < 0) { /* second-class keyword? */
2133 if (expect != XOPERATOR &&
2134 (*s != ':' || s[1] != ':') &&
2135 (gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV)) &&
2136 (GvFLAGS(gv) & GVf_IMPORTED) &&
2148 default: /* not a keyword */
2151 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
2153 /* Get the rest if it looks like a package qualifier */
2155 if (*s == '\'' || *s == ':' && s[1] == ':') {
2156 s = scan_word(s, tokenbuf + len, TRUE, &len);
2158 croak("Bad name after %s::", tokenbuf);
2161 /* Do special processing at start of statement. */
2163 if (expect == XSTATE) {
2164 while (isSPACE(*s)) s++;
2165 if (*s == ':') { /* It's a label. */
2166 yylval.pval = savepv(tokenbuf);
2172 else if (expect == XOPERATOR) {
2173 if (bufptr == SvPVX(linestr)) {
2179 no_op("Bare word",s);
2182 /* Look for a subroutine with this name in current package. */
2184 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2186 /* Presume this is going to be a bareword of some sort. */
2189 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2190 yylval.opval->op_private = OPpCONST_BARE;
2192 /* See if it's the indirect object for a list operator. */
2195 oldoldbufptr < bufptr &&
2196 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2197 /* NO SKIPSPACE BEFORE HERE! */
2199 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2201 bool immediate_paren = *s == '(';
2203 /* (Now we can afford to cross potential line boundary.) */
2206 /* Two barewords in a row may indicate method call. */
2208 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2211 /* If not a declared subroutine, it's an indirect object. */
2212 /* (But it's an indir obj regardless for sort.) */
2214 if (last_lop_op == OP_SORT ||
2215 (!immediate_paren && (!gv || !GvCV(gv))) ) {
2216 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2221 /* If followed by a paren, it's certainly a subroutine. */
2227 nextval[nexttoke].opval = yylval.opval;
2233 /* If followed by var or block, call it a method (unless sub) */
2235 if ((*s == '$' || *s == '{') && (!gv || !GvCV(gv))) {
2236 last_lop = oldbufptr;
2237 last_lop_op = OP_METHOD;
2241 /* If followed by a bareword, see if it looks like indir obj. */
2243 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2246 /* Not a method, so call it a subroutine (if defined) */
2248 if (gv && GvCV(gv)) {
2249 nextval[nexttoke].opval = yylval.opval;
2255 if (lastchar == '-')
2256 warn("Ambiguious use of -%s resolved as -&%s()",
2257 tokenbuf, tokenbuf);
2258 last_lop = oldbufptr;
2259 last_lop_op = OP_ENTERSUB;
2265 if (hints & HINT_STRICT_SUBS &&
2268 last_lop_op != OP_ACCEPT &&
2269 last_lop_op != OP_PIPE_OP &&
2270 last_lop_op != OP_SOCKPAIR)
2273 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2278 /* Call it a bare word */
2282 if (lastchar != '-') {
2283 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2285 warn(warn_reserved, tokenbuf);
2288 if (lastchar && strchr("*%&", lastchar)) {
2289 warn("Operator or semicolon missing before %c%s",
2290 lastchar, tokenbuf);
2291 warn("Ambiguious use of %c resolved as operator %c",
2292 lastchar, lastchar);
2298 case KEY___FILE__: {
2299 if (tokenbuf[2] == 'L')
2300 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2302 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2303 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2312 gv = gv_fetchpv("main::DATA",TRUE, SVt_PVIO);
2315 GvIOp(gv) = newIO();
2316 IoIFP(GvIOp(gv)) = rsfp;
2317 #if defined(HAS_FCNTL) && defined(F_SETFD)
2319 int fd = fileno(rsfp);
2320 fcntl(fd,F_SETFD,fd >= 3);
2324 IoTYPE(GvIOp(gv)) = '|';
2325 else if ((FILE*)rsfp == stdin)
2326 IoTYPE(GvIOp(gv)) = '-';
2328 IoTYPE(GvIOp(gv)) = '<';
2338 if (expect == XSTATE) {
2345 if (*s == ':' && s[1] == ':') {
2348 s = scan_word(s, tokenbuf, FALSE, &len);
2349 tmp = keyword(tokenbuf, len);
2363 LOP(OP_ACCEPT,XTERM);
2369 LOP(OP_ATAN2,XTERM);
2378 LOP(OP_BLESS,XTERM);
2387 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2407 LOP(OP_CRYPT,XTERM);
2411 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2412 if (*d != '0' && isDIGIT(*d))
2413 yywarn("chmod: mode argument is missing initial 0");
2415 LOP(OP_CHMOD,XTERM);
2418 LOP(OP_CHOWN,XTERM);
2421 LOP(OP_CONNECT,XTERM);
2437 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2441 hints |= HINT_BLOCK_SCOPE;
2451 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2452 LOP(OP_DBMOPEN,XTERM);
2458 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2465 yylval.ival = curcop->cop_line;
2479 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2480 UNIBRACK(OP_ENTEREVAL);
2495 case KEY_endhostent:
2501 case KEY_endservent:
2504 case KEY_endprotoent:
2515 yylval.ival = curcop->cop_line;
2516 while (s < bufend && isSPACE(*s))
2519 croak("Missing $ on loop variable");
2523 LOP(OP_FORMLINE,XTERM);
2529 LOP(OP_FCNTL,XTERM);
2535 LOP(OP_FLOCK,XTERM);
2544 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2547 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2562 case KEY_getpriority:
2563 LOP(OP_GETPRIORITY,XTERM);
2565 case KEY_getprotobyname:
2568 case KEY_getprotobynumber:
2569 LOP(OP_GPBYNUMBER,XTERM);
2571 case KEY_getprotoent:
2583 case KEY_getpeername:
2584 UNI(OP_GETPEERNAME);
2586 case KEY_gethostbyname:
2589 case KEY_gethostbyaddr:
2590 LOP(OP_GHBYADDR,XTERM);
2592 case KEY_gethostent:
2595 case KEY_getnetbyname:
2598 case KEY_getnetbyaddr:
2599 LOP(OP_GNBYADDR,XTERM);
2604 case KEY_getservbyname:
2605 LOP(OP_GSBYNAME,XTERM);
2607 case KEY_getservbyport:
2608 LOP(OP_GSBYPORT,XTERM);
2610 case KEY_getservent:
2613 case KEY_getsockname:
2614 UNI(OP_GETSOCKNAME);
2616 case KEY_getsockopt:
2617 LOP(OP_GSOCKOPT,XTERM);
2639 yylval.ival = curcop->cop_line;
2643 LOP(OP_INDEX,XTERM);
2649 LOP(OP_IOCTL,XTERM);
2661 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2693 LOP(OP_LISTEN,XTERM);
2700 TERM(sublex_start());
2703 LOP(OP_MAPSTART,XREF);
2706 LOP(OP_MKDIR,XTERM);
2709 LOP(OP_MSGCTL,XTERM);
2712 LOP(OP_MSGGET,XTERM);
2715 LOP(OP_MSGRCV,XTERM);
2718 LOP(OP_MSGSND,XTERM);
2726 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2733 if (expect != XSTATE)
2734 yyerror("\"no\" not allowed in expression");
2735 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2744 if (isIDFIRST(*s)) {
2746 for (d = s; isALNUM(*d); d++) ;
2748 if (strchr("|&*+-=!?:.", *t))
2749 warn("Precedence problem: open %.*s should be open(%.*s)",
2755 yylval.ival = OP_OR;
2765 LOP(OP_OPEN_DIR,XTERM);
2768 checkcomma(s,tokenbuf,"filehandle");
2772 checkcomma(s,tokenbuf,"filehandle");
2788 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2792 LOP(OP_PIPE_OP,XTERM);
2797 missingterm((char*)0);
2798 yylval.ival = OP_CONST;
2799 TERM(sublex_start());
2807 missingterm((char*)0);
2809 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
2813 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
2816 yylval.ival = OP_SPLIT;
2820 last_lop = oldbufptr;
2821 last_lop_op = OP_SPLIT;
2827 missingterm((char*)0);
2828 yylval.ival = OP_STRINGIFY;
2829 if (SvIVX(lex_stuff) == '\'')
2830 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
2831 TERM(sublex_start());
2836 missingterm((char*)0);
2837 yylval.ival = OP_BACKTICK;
2839 TERM(sublex_start());
2846 s = force_word(s,WORD,TRUE,TRUE,FALSE);
2847 if (isIDFIRST(*tokenbuf))
2848 gv_stashpv(tokenbuf, TRUE);
2850 yyerror("<> should be quotes");
2857 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2861 LOP(OP_RENAME,XTERM);
2870 LOP(OP_RINDEX,XTERM);
2893 LOP(OP_REVERSE,XTERM);
2904 TERM(sublex_start());
2906 TOKEN(1); /* force error */
2915 LOP(OP_SELECT,XTERM);
2921 LOP(OP_SEMCTL,XTERM);
2924 LOP(OP_SEMGET,XTERM);
2927 LOP(OP_SEMOP,XTERM);
2933 LOP(OP_SETPGRP,XTERM);
2935 case KEY_setpriority:
2936 LOP(OP_SETPRIORITY,XTERM);
2938 case KEY_sethostent:
2944 case KEY_setservent:
2947 case KEY_setprotoent:
2957 LOP(OP_SEEKDIR,XTERM);
2959 case KEY_setsockopt:
2960 LOP(OP_SSOCKOPT,XTERM);
2966 LOP(OP_SHMCTL,XTERM);
2969 LOP(OP_SHMGET,XTERM);
2972 LOP(OP_SHMREAD,XTERM);
2975 LOP(OP_SHMWRITE,XTERM);
2978 LOP(OP_SHUTDOWN,XTERM);
2987 LOP(OP_SOCKET,XTERM);
2989 case KEY_socketpair:
2990 LOP(OP_SOCKPAIR,XTERM);
2993 checkcomma(s,tokenbuf,"subroutine name");
2995 if (*s == ';' || *s == ')') /* probably a close */
2996 croak("sort is now a reserved word");
2998 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3002 LOP(OP_SPLIT,XTERM);
3005 LOP(OP_SPRINTF,XTERM);
3008 LOP(OP_SPLICE,XTERM);
3024 LOP(OP_SUBSTR,XTERM);
3030 if (*s == '{' && tmp == KEY_sub) {
3031 sv_setpv(subname,"__ANON__");
3032 PRETERMBLOCK(ANONSUB);
3035 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3037 d = scan_word(s, tmpbuf, TRUE, &len);
3038 if (strchr(tmpbuf, ':'))
3039 sv_setpv(subname, tmpbuf);
3041 sv_setsv(subname,curstname);
3042 sv_catpvn(subname,"::",2);
3043 sv_catpvn(subname,tmpbuf,len);
3045 s = force_word(s,WORD,FALSE,TRUE,TRUE);
3048 sv_setpv(subname,"?");
3050 if (tmp != KEY_format)
3055 lex_formbrack = lex_brackets + 1;
3060 LOP(OP_SYSTEM,XREF);
3063 LOP(OP_SYMLINK,XTERM);
3066 LOP(OP_SYSCALL,XTERM);
3069 LOP(OP_SYSREAD,XTERM);
3072 LOP(OP_SYSWRITE,XTERM);
3076 TERM(sublex_start());
3094 LOP(OP_TRUNCATE,XTERM);
3106 yylval.ival = curcop->cop_line;
3110 yylval.ival = curcop->cop_line;
3114 LOP(OP_UNLINK,XTERM);
3120 LOP(OP_UNPACK,XTERM);
3123 LOP(OP_UTIME,XTERM);
3127 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3128 if (*d != '0' && isDIGIT(*d))
3129 yywarn("umask: argument is missing initial 0");
3134 LOP(OP_UNSHIFT,XTERM);
3137 if (expect != XSTATE)
3138 yyerror("\"use\" not allowed in expression");
3139 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3151 yylval.ival = curcop->cop_line;
3155 hints |= HINT_BLOCK_SCOPE;
3162 LOP(OP_WAITPID,XTERM);
3168 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3172 if (expect == XOPERATOR)
3178 yylval.ival = OP_XOR;
3183 TERM(sublex_start());
3196 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3197 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3198 if (strEQ(d,"__END__")) return KEY___END__;
3202 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3207 if (strEQ(d,"and")) return -KEY_and;
3208 if (strEQ(d,"abs")) return -KEY_abs;
3211 if (strEQ(d,"alarm")) return -KEY_alarm;
3212 if (strEQ(d,"atan2")) return -KEY_atan2;
3215 if (strEQ(d,"accept")) return -KEY_accept;
3220 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3223 if (strEQ(d,"bless")) return -KEY_bless;
3224 if (strEQ(d,"bind")) return -KEY_bind;
3225 if (strEQ(d,"binmode")) return -KEY_binmode;
3228 if (strEQ(d,"CORE")) return -KEY_CORE;
3233 if (strEQ(d,"cmp")) return -KEY_cmp;
3234 if (strEQ(d,"chr")) return -KEY_chr;
3235 if (strEQ(d,"cos")) return -KEY_cos;
3238 if (strEQ(d,"chop")) return KEY_chop;
3241 if (strEQ(d,"close")) return -KEY_close;
3242 if (strEQ(d,"chdir")) return -KEY_chdir;
3243 if (strEQ(d,"chomp")) return KEY_chomp;
3244 if (strEQ(d,"chmod")) return -KEY_chmod;
3245 if (strEQ(d,"chown")) return -KEY_chown;
3246 if (strEQ(d,"crypt")) return -KEY_crypt;
3249 if (strEQ(d,"chroot")) return -KEY_chroot;
3250 if (strEQ(d,"caller")) return -KEY_caller;
3253 if (strEQ(d,"connect")) return -KEY_connect;
3256 if (strEQ(d,"closedir")) return -KEY_closedir;
3257 if (strEQ(d,"continue")) return -KEY_continue;
3262 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3267 if (strEQ(d,"do")) return KEY_do;
3270 if (strEQ(d,"die")) return -KEY_die;
3273 if (strEQ(d,"dump")) return -KEY_dump;
3276 if (strEQ(d,"delete")) return KEY_delete;
3279 if (strEQ(d,"defined")) return KEY_defined;
3280 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3283 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3288 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3289 if (strEQ(d,"END")) return KEY_END;
3294 if (strEQ(d,"eq")) return -KEY_eq;
3297 if (strEQ(d,"eof")) return -KEY_eof;
3298 if (strEQ(d,"exp")) return -KEY_exp;
3301 if (strEQ(d,"else")) return KEY_else;
3302 if (strEQ(d,"exit")) return -KEY_exit;
3303 if (strEQ(d,"eval")) return KEY_eval;
3304 if (strEQ(d,"exec")) return -KEY_exec;
3305 if (strEQ(d,"each")) return KEY_each;
3308 if (strEQ(d,"elsif")) return KEY_elsif;
3311 if (strEQ(d,"exists")) return KEY_exists;
3314 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3315 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3318 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3321 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3322 if (strEQ(d,"endservent")) return -KEY_endservent;
3325 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3332 if (strEQ(d,"for")) return KEY_for;
3335 if (strEQ(d,"fork")) return -KEY_fork;
3338 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3339 if (strEQ(d,"flock")) return -KEY_flock;
3342 if (strEQ(d,"format")) return KEY_format;
3343 if (strEQ(d,"fileno")) return -KEY_fileno;
3346 if (strEQ(d,"foreach")) return KEY_foreach;
3349 if (strEQ(d,"formline")) return -KEY_formline;
3355 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3356 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3360 if (strnEQ(d,"get",3)) {
3365 if (strEQ(d,"ppid")) return -KEY_getppid;
3366 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3369 if (strEQ(d,"pwent")) return -KEY_getpwent;
3370 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3371 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3374 if (strEQ(d,"peername")) return -KEY_getpeername;
3375 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3376 if (strEQ(d,"priority")) return -KEY_getpriority;
3379 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3382 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3386 else if (*d == 'h') {
3387 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3388 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3389 if (strEQ(d,"hostent")) return -KEY_gethostent;
3391 else if (*d == 'n') {
3392 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3393 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3394 if (strEQ(d,"netent")) return -KEY_getnetent;
3396 else if (*d == 's') {
3397 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3398 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3399 if (strEQ(d,"servent")) return -KEY_getservent;
3400 if (strEQ(d,"sockname")) return -KEY_getsockname;
3401 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3403 else if (*d == 'g') {
3404 if (strEQ(d,"grent")) return -KEY_getgrent;
3405 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3406 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3408 else if (*d == 'l') {
3409 if (strEQ(d,"login")) return -KEY_getlogin;
3411 else if (strEQ(d,"c")) return -KEY_getc;
3416 if (strEQ(d,"gt")) return -KEY_gt;
3417 if (strEQ(d,"ge")) return -KEY_ge;
3420 if (strEQ(d,"grep")) return KEY_grep;
3421 if (strEQ(d,"goto")) return KEY_goto;
3422 if (strEQ(d,"glob")) return -KEY_glob;
3425 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3430 if (strEQ(d,"hex")) return -KEY_hex;
3435 if (strEQ(d,"if")) return KEY_if;
3438 if (strEQ(d,"int")) return -KEY_int;
3441 if (strEQ(d,"index")) return -KEY_index;
3442 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3447 if (strEQ(d,"join")) return -KEY_join;
3451 if (strEQ(d,"keys")) return KEY_keys;
3452 if (strEQ(d,"kill")) return -KEY_kill;
3457 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3458 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3464 if (strEQ(d,"lt")) return -KEY_lt;
3465 if (strEQ(d,"le")) return -KEY_le;
3466 if (strEQ(d,"lc")) return -KEY_lc;
3469 if (strEQ(d,"log")) return -KEY_log;
3472 if (strEQ(d,"last")) return KEY_last;
3473 if (strEQ(d,"link")) return -KEY_link;
3476 if (strEQ(d,"local")) return KEY_local;
3477 if (strEQ(d,"lstat")) return -KEY_lstat;
3480 if (strEQ(d,"length")) return -KEY_length;
3481 if (strEQ(d,"listen")) return -KEY_listen;
3484 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3487 if (strEQ(d,"localtime")) return -KEY_localtime;
3493 case 1: return KEY_m;
3495 if (strEQ(d,"my")) return KEY_my;
3498 if (strEQ(d,"map")) return KEY_map;
3501 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3504 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3505 if (strEQ(d,"msgget")) return -KEY_msgget;
3506 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3507 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3512 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3515 if (strEQ(d,"next")) return KEY_next;
3516 if (strEQ(d,"ne")) return -KEY_ne;
3517 if (strEQ(d,"not")) return -KEY_not;
3518 if (strEQ(d,"no")) return KEY_no;
3523 if (strEQ(d,"or")) return -KEY_or;
3526 if (strEQ(d,"ord")) return -KEY_ord;
3527 if (strEQ(d,"oct")) return -KEY_oct;
3530 if (strEQ(d,"open")) return -KEY_open;
3533 if (strEQ(d,"opendir")) return -KEY_opendir;
3540 if (strEQ(d,"pop")) return KEY_pop;
3541 if (strEQ(d,"pos")) return KEY_pos;
3544 if (strEQ(d,"push")) return KEY_push;
3545 if (strEQ(d,"pack")) return -KEY_pack;
3546 if (strEQ(d,"pipe")) return -KEY_pipe;
3549 if (strEQ(d,"print")) return KEY_print;
3552 if (strEQ(d,"printf")) return KEY_printf;
3555 if (strEQ(d,"package")) return KEY_package;
3561 if (strEQ(d,"q")) return KEY_q;
3562 if (strEQ(d,"qq")) return KEY_qq;
3563 if (strEQ(d,"qw")) return KEY_qw;
3564 if (strEQ(d,"qx")) return KEY_qx;
3566 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
3571 if (strEQ(d,"ref")) return -KEY_ref;
3574 if (strEQ(d,"read")) return -KEY_read;
3575 if (strEQ(d,"rand")) return -KEY_rand;
3576 if (strEQ(d,"recv")) return -KEY_recv;
3577 if (strEQ(d,"redo")) return KEY_redo;
3580 if (strEQ(d,"rmdir")) return -KEY_rmdir;
3581 if (strEQ(d,"reset")) return -KEY_reset;
3584 if (strEQ(d,"return")) return KEY_return;
3585 if (strEQ(d,"rename")) return -KEY_rename;
3586 if (strEQ(d,"rindex")) return -KEY_rindex;
3589 if (strEQ(d,"require")) return -KEY_require;
3590 if (strEQ(d,"reverse")) return -KEY_reverse;
3591 if (strEQ(d,"readdir")) return -KEY_readdir;
3594 if (strEQ(d,"readlink")) return -KEY_readlink;
3595 if (strEQ(d,"readline")) return -KEY_readline;
3596 if (strEQ(d,"readpipe")) return -KEY_readpipe;
3599 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
3605 case 0: return KEY_s;
3607 if (strEQ(d,"scalar")) return KEY_scalar;
3612 if (strEQ(d,"seek")) return -KEY_seek;
3613 if (strEQ(d,"send")) return -KEY_send;
3616 if (strEQ(d,"semop")) return -KEY_semop;
3619 if (strEQ(d,"select")) return -KEY_select;
3620 if (strEQ(d,"semctl")) return -KEY_semctl;
3621 if (strEQ(d,"semget")) return -KEY_semget;
3624 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
3625 if (strEQ(d,"seekdir")) return -KEY_seekdir;
3628 if (strEQ(d,"setpwent")) return -KEY_setpwent;
3629 if (strEQ(d,"setgrent")) return -KEY_setgrent;
3632 if (strEQ(d,"setnetent")) return -KEY_setnetent;
3635 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
3636 if (strEQ(d,"sethostent")) return -KEY_sethostent;
3637 if (strEQ(d,"setservent")) return -KEY_setservent;
3640 if (strEQ(d,"setpriority")) return -KEY_setpriority;
3641 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
3648 if (strEQ(d,"shift")) return KEY_shift;
3651 if (strEQ(d,"shmctl")) return -KEY_shmctl;
3652 if (strEQ(d,"shmget")) return -KEY_shmget;
3655 if (strEQ(d,"shmread")) return -KEY_shmread;
3658 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
3659 if (strEQ(d,"shutdown")) return -KEY_shutdown;
3664 if (strEQ(d,"sin")) return -KEY_sin;
3667 if (strEQ(d,"sleep")) return -KEY_sleep;
3670 if (strEQ(d,"sort")) return KEY_sort;
3671 if (strEQ(d,"socket")) return -KEY_socket;
3672 if (strEQ(d,"socketpair")) return -KEY_socketpair;
3675 if (strEQ(d,"split")) return KEY_split;
3676 if (strEQ(d,"sprintf")) return -KEY_sprintf;
3677 if (strEQ(d,"splice")) return KEY_splice;
3680 if (strEQ(d,"sqrt")) return -KEY_sqrt;
3683 if (strEQ(d,"srand")) return -KEY_srand;
3686 if (strEQ(d,"stat")) return -KEY_stat;
3687 if (strEQ(d,"study")) return KEY_study;
3690 if (strEQ(d,"substr")) return -KEY_substr;
3691 if (strEQ(d,"sub")) return KEY_sub;
3696 if (strEQ(d,"system")) return -KEY_system;
3699 if (strEQ(d,"sysread")) return -KEY_sysread;
3700 if (strEQ(d,"symlink")) return -KEY_symlink;
3701 if (strEQ(d,"syscall")) return -KEY_syscall;
3704 if (strEQ(d,"syswrite")) return -KEY_syswrite;
3713 if (strEQ(d,"tr")) return KEY_tr;
3716 if (strEQ(d,"tie")) return KEY_tie;
3719 if (strEQ(d,"tell")) return -KEY_tell;
3720 if (strEQ(d,"time")) return -KEY_time;
3723 if (strEQ(d,"times")) return -KEY_times;
3726 if (strEQ(d,"telldir")) return -KEY_telldir;
3729 if (strEQ(d,"truncate")) return -KEY_truncate;
3736 if (strEQ(d,"uc")) return -KEY_uc;
3739 if (strEQ(d,"use")) return KEY_use;
3742 if (strEQ(d,"undef")) return KEY_undef;
3743 if (strEQ(d,"until")) return KEY_until;
3744 if (strEQ(d,"untie")) return KEY_untie;
3745 if (strEQ(d,"utime")) return -KEY_utime;
3746 if (strEQ(d,"umask")) return -KEY_umask;
3749 if (strEQ(d,"unless")) return KEY_unless;
3750 if (strEQ(d,"unpack")) return -KEY_unpack;
3751 if (strEQ(d,"unlink")) return -KEY_unlink;
3754 if (strEQ(d,"unshift")) return KEY_unshift;
3755 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
3760 if (strEQ(d,"values")) return -KEY_values;
3761 if (strEQ(d,"vec")) return -KEY_vec;
3766 if (strEQ(d,"warn")) return -KEY_warn;
3767 if (strEQ(d,"wait")) return -KEY_wait;
3770 if (strEQ(d,"while")) return KEY_while;
3771 if (strEQ(d,"write")) return -KEY_write;
3774 if (strEQ(d,"waitpid")) return -KEY_waitpid;
3777 if (strEQ(d,"wantarray")) return -KEY_wantarray;
3782 if (len == 1) return -KEY_x;
3783 if (strEQ(d,"xor")) return -KEY_xor;
3786 if (len == 1) return KEY_y;
3795 checkcomma(s,name,what)
3802 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
3804 for (w = s+2; *w && level; w++) {
3811 for (; *w && isSPACE(*w); w++) ;
3812 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
3813 warn("%s (...) interpreted as function",name);
3815 while (s < bufend && isSPACE(*s))
3819 while (s < bufend && isSPACE(*s))
3821 if (isIDFIRST(*s)) {
3825 while (s < bufend && isSPACE(*s))
3830 kw = keyword(w, s - w);
3834 croak("No comma allowed after %s", what);
3840 scan_word(s, dest, allow_package, slp)
3846 register char *d = dest;
3850 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
3855 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
3868 scan_ident(s,send,dest,ck_uni)
3870 register char *send;
3878 if (lex_brackets == 0)
3891 else if (*s == '\'' && isIDFIRST(s[1])) {
3896 else if (*s == ':' && s[1] == ':') {
3907 if (lex_state != LEX_NORMAL)
3908 lex_state = LEX_INTERPENDMAYBE;
3911 if (*s == '$' && s[1] &&
3912 (isALPHA(s[1]) || strchr("$_{", s[1]) || strnEQ(s+1,"::",2)) )
3923 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
3927 if (isSPACE(s[-1])) {
3928 while (s < send && (*s == ' ' || *s == '\t')) s++;
3931 if (isALPHA(*d) || *d == '_') {
3933 while (isALNUM(*s) || *s == ':')
3936 while (s < send && (*s == ' ' || *s == '\t')) s++;
3937 if ((*s == '[' || *s == '{')) {
3938 if (dowarn && keyword(dest, d - dest)) {
3939 char *brack = *s == '[' ? "[...]" : "{...}";
3940 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
3941 funny, dest, brack, funny, dest, brack);
3943 lex_fakebrack = lex_brackets+1;
3945 lex_brackstack[lex_brackets++] = XOPERATOR;
3951 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
3952 lex_state = LEX_INTERPEND;
3956 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
3957 warn("Ambiguous use of %c{%s} resolved to %c%s",
3958 funny, dest, funny, dest);
3961 s = bracket; /* let the parser handle it */
3965 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
3966 lex_state = LEX_INTERPEND;
3970 void pmflag(pmfl,ch)
3979 *pmfl |= PMf_GLOBAL;
3983 *pmfl |= PMf_MULTILINE;
3985 *pmfl |= PMf_SINGLELINE;
3987 *pmfl |= PMf_EXTENDED;
3997 s = scan_str(start);
4000 SvREFCNT_dec(lex_stuff);
4002 croak("Search pattern not terminated");
4004 pm = (PMOP*)newPMOP(OP_MATCH, 0);
4005 if (multi_open == '?')
4006 pm->op_pmflags |= PMf_ONCE;
4008 while (*s && strchr("iogmsx", *s))
4009 pmflag(&pm->op_pmflags,*s++);
4012 yylval.ival = OP_MATCH;
4024 yylval.ival = OP_NULL;
4026 s = scan_str(start);
4030 SvREFCNT_dec(lex_stuff);
4032 croak("Substitution pattern not terminated");
4035 if (s[-1] == multi_open)
4041 SvREFCNT_dec(lex_stuff);
4044 SvREFCNT_dec(lex_repl);
4046 croak("Substitution replacement not terminated");
4049 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4050 while (*s && strchr("iogmsex", *s)) {
4056 pmflag(&pm->op_pmflags,*s++);
4061 pm->op_pmflags |= PMf_EVAL;
4062 repl = newSVpv("",0);
4064 sv_catpv(repl, es ? "eval " : "do ");
4065 sv_catpvn(repl, "{ ", 2);
4066 sv_catsv(repl, lex_repl);
4067 sv_catpvn(repl, " };", 2);
4068 SvCOMPILED_on(repl);
4069 SvREFCNT_dec(lex_repl);
4074 yylval.ival = OP_SUBST;
4082 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4083 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4085 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4086 pm->op_pmflags |= PMf_SCANFIRST;
4087 else if (pm->op_pmflags & PMf_FOLD)
4089 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4090 pm->op_pmslen = SvCUR(pm->op_pmshort);
4092 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4093 if (pm->op_pmshort &&
4094 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4096 if (pm->op_pmflags & PMf_SCANFIRST) {
4097 SvREFCNT_dec(pm->op_pmshort);
4098 pm->op_pmshort = Nullsv;
4101 SvREFCNT_dec(pm->op_pmregexp->regmust);
4102 pm->op_pmregexp->regmust = Nullsv;
4106 if (!pm->op_pmshort || /* promote the better string */
4107 ((pm->op_pmflags & PMf_SCANFIRST) &&
4108 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)) )){
4109 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4110 pm->op_pmshort = pm->op_pmregexp->regmust;
4111 pm->op_pmslen = SvCUR(pm->op_pmshort);
4112 pm->op_pmregexp->regmust = Nullsv;
4113 pm->op_pmflags |= PMf_SCANFIRST;
4129 yylval.ival = OP_NULL;
4131 s = scan_str(start);
4134 SvREFCNT_dec(lex_stuff);
4136 croak("Translation pattern not terminated");
4138 if (s[-1] == multi_open)
4144 SvREFCNT_dec(lex_stuff);
4147 SvREFCNT_dec(lex_repl);
4149 croak("Translation replacement not terminated");
4152 New(803,tbl,256,short);
4153 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4155 complement = delete = squash = 0;
4156 while (*s == 'c' || *s == 'd' || *s == 's') {
4158 complement = OPpTRANS_COMPLEMENT;
4160 delete = OPpTRANS_DELETE;
4162 squash = OPpTRANS_SQUASH;
4165 op->op_private = delete|squash|complement;
4168 yylval.ival = OP_TRANS;
4177 I32 op_type = OP_SCALAR;
4187 if (*s && strchr("`'\"",*s)) {
4189 s = cpytill(d,s,bufend,term,&len);
4201 } /* assuming tokenbuf won't clobber */
4206 if (rsfp || !(d=ninstr(s,bufend,d,d+1)))
4207 herewas = newSVpv(s,bufend-s);
4209 s--, herewas = newSVpv(s,d-s);
4210 s += SvCUR(herewas);
4212 tmpstr = NEWSV(87,80);
4213 sv_upgrade(tmpstr, SVt_PVIV);
4218 else if (term == '`') {
4219 op_type = OP_BACKTICK;
4220 SvIVX(tmpstr) = '\\';
4224 multi_start = curcop->cop_line;
4225 multi_open = multi_close = '<';
4229 while (s < bufend &&
4230 (*s != term || bcmp(s,tokenbuf,len) != 0) ) {
4235 curcop->cop_line = multi_start;
4236 missingterm(tokenbuf);
4238 sv_setpvn(tmpstr,d+1,s-d);
4240 sv_catpvn(herewas,s,bufend-s);
4241 sv_setsv(linestr,herewas);
4242 oldoldbufptr = oldbufptr = bufptr = s = SvPVX(linestr);
4243 bufend = SvPVX(linestr) + SvCUR(linestr);
4246 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4247 while (s >= bufend) { /* multiple line string? */
4249 !(oldoldbufptr = oldbufptr = s = sv_gets(linestr, rsfp, 0))) {
4250 curcop->cop_line = multi_start;
4251 missingterm(tokenbuf);
4254 if (perldb && curstash != debstash) {
4255 SV *sv = NEWSV(88,0);
4257 sv_upgrade(sv, SVt_PVMG);
4258 sv_setsv(sv,linestr);
4259 av_store(GvAV(curcop->cop_filegv),
4260 (I32)curcop->cop_line,sv);
4262 bufend = SvPVX(linestr) + SvCUR(linestr);
4263 if (*s == term && bcmp(s,tokenbuf,len) == 0) {
4266 sv_catsv(linestr,herewas);
4267 bufend = SvPVX(linestr) + SvCUR(linestr);
4271 sv_catsv(tmpstr,linestr);
4274 multi_end = curcop->cop_line;
4276 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4277 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4278 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4280 SvREFCNT_dec(herewas);
4282 yylval.ival = op_type;
4287 scan_inputsymbol(start)
4290 register char *s = start;
4295 s = cpytill(d, s+1, bufend, '>', &len);
4299 croak("Unterminated <> operator");
4302 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4304 if (d - tokenbuf != len) {
4305 yylval.ival = OP_GLOB;
4307 s = scan_str(start);
4309 croak("Glob not terminated");
4315 (void)strcpy(d,"ARGV");
4318 if (tmp = pad_findmy(d)) {
4319 OP *op = newOP(OP_PADSV, 0);
4321 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4324 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4325 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4326 newUNOP(OP_RV2GV, 0,
4327 newUNOP(OP_RV2SV, 0,
4328 newGVOP(OP_GV, 0, gv))));
4330 yylval.ival = OP_NULL;
4333 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4334 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4335 yylval.ival = OP_NULL;
4347 register char *s = start;
4356 multi_start = curcop->cop_line;
4358 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4363 sv_upgrade(sv, SVt_PVIV);
4365 (void)SvPOK_only(sv); /* validate pointer */
4368 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4369 to = SvPVX(sv)+SvCUR(sv);
4370 if (multi_open == multi_close) {
4371 for (; s < bufend; s++,to++) {
4372 if (*s == '\n' && !rsfp)
4374 if (*s == '\\' && s+1 < bufend && term != '\\') {
4380 else if (*s == term)
4386 for (; s < bufend; s++,to++) {
4387 if (*s == '\n' && !rsfp)
4389 if (*s == '\\' && s+1 < bufend && term != '\\') {
4395 else if (*s == term && --brackets <= 0)
4397 else if (*s == multi_open)
4403 SvCUR_set(sv, to - SvPVX(sv));
4405 if (s < bufend) break; /* string ends on this line? */
4408 !(oldoldbufptr = oldbufptr = s = sv_gets(linestr, rsfp, 0))) {
4409 curcop->cop_line = multi_start;
4413 if (perldb && curstash != debstash) {
4414 SV *sv = NEWSV(88,0);
4416 sv_upgrade(sv, SVt_PVMG);
4417 sv_setsv(sv,linestr);
4418 av_store(GvAV(curcop->cop_filegv),
4419 (I32)curcop->cop_line, sv);
4421 bufend = SvPVX(linestr) + SvCUR(linestr);
4423 multi_end = curcop->cop_line;
4425 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4426 SvLEN_set(sv, SvCUR(sv) + 1);
4427 Renew(SvPVX(sv), SvLEN(sv), char);
4440 register char *s = start;
4450 croak("panic: scan_num");
4460 else if (s[1] == '.')
4474 yyerror("Illegal octal digit");
4476 case '0': case '1': case '2': case '3': case '4':
4477 case '5': case '6': case '7':
4481 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4482 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4486 i += (*s++ & 7) + 9;
4493 if (tryi32 == i && tryi32 >= 0)
4494 sv_setiv(sv,tryi32);
4496 sv_setnv(sv,(double)i);
4499 case '1': case '2': case '3': case '4': case '5':
4500 case '6': case '7': case '8': case '9': case '.':
4504 while (isDIGIT(*s) || *s == '_') {
4506 if (dowarn && lastub && s - lastub != 3)
4507 warn("Misplaced _ in number");
4513 if (dowarn && lastub && s - lastub != 3)
4514 warn("Misplaced _ in number");
4515 if (*s == '.' && s[1] != '.') {
4518 while (isDIGIT(*s) || *s == '_') {
4525 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
4528 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
4529 if (*s == '+' || *s == '-')
4536 value = atof(tokenbuf);
4537 tryi32 = I_32(value);
4538 if (!floatit && (double)tryi32 == value)
4539 sv_setiv(sv,tryi32);
4545 yylval.opval = newSVOP(OP_CONST, 0, sv);
4556 SV *stuff = newSVpv("",0);
4557 bool needargs = FALSE;
4560 if (*s == '.' || *s == '}') {
4562 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
4566 if (in_eval && !rsfp) {
4567 eol = strchr(s,'\n');
4572 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
4574 for (t = s; t < eol; t++) {
4575 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
4577 goto enough; /* ~~ must be first line in formline */
4579 if (*t == '@' || *t == '^')
4582 sv_catpvn(stuff, s, eol-s);
4586 s = sv_gets(linestr, rsfp, 0);
4587 oldoldbufptr = oldbufptr = bufptr = SvPVX(linestr);
4588 bufend = bufptr + SvCUR(linestr);
4591 yyerror("Format not terminated");
4601 lex_state = LEX_NORMAL;
4602 nextval[nexttoke].ival = 0;
4606 lex_state = LEX_FORMLINE;
4607 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
4609 nextval[nexttoke].ival = OP_FORMLINE;
4613 SvREFCNT_dec(stuff);
4625 cshlen = strlen(cshname);
4632 int oldsavestack_ix = savestack_ix;
4633 CV* outsidecv = compcv;
4637 assert(SvTYPE(compcv) == SVt_PVCV);
4644 SAVESPTR(comppad_name);
4646 SAVEINT(comppad_name_fill);
4647 SAVEINT(min_intro_pending);
4648 SAVEINT(max_intro_pending);
4649 SAVEINT(pad_reset_pending);
4651 compcv = (CV*)NEWSV(1104,0);
4652 sv_upgrade((SV *)compcv, SVt_PVCV);
4655 SAVEFREESV((SV*)comppad);
4656 comppad_name = newAV();
4657 SAVEFREESV((SV*)comppad_name);
4658 comppad_name_fill = 0;
4659 min_intro_pending = 0;
4660 av_push(comppad, Nullsv);
4661 curpad = AvARRAY(comppad);
4663 subline = curcop->cop_line;
4665 comppadlist = newAV();
4666 AvREAL_off(comppadlist);
4667 av_store(comppadlist, 0, SvREFCNT_inc((SV*)comppad_name));
4668 av_store(comppadlist, 1, SvREFCNT_inc((SV*)comppad));
4670 CvPADLIST(compcv) = comppadlist;
4671 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
4673 return oldsavestack_ix;
4692 char *tname = tmpbuf;
4694 if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
4695 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
4696 while (isSPACE(*oldoldbufptr))
4698 sprintf(tname,"near \"%.*s\"",bufptr - oldoldbufptr, oldoldbufptr);
4700 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
4701 oldbufptr != bufptr) {
4702 while (isSPACE(*oldbufptr))
4704 sprintf(tname,"near \"%.*s\"",bufptr - oldbufptr, oldbufptr);
4706 else if (yychar > 255)
4707 tname = "next token ???";
4708 else if (!yychar || (yychar == ';' && !rsfp))
4709 (void)strcpy(tname,"at EOF");
4710 else if ((yychar & 127) == 127) {
4711 if (lex_state == LEX_NORMAL ||
4712 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
4713 (void)strcpy(tname,"at end of line");
4715 (void)strcpy(tname,"within string");
4717 else if (yychar < 32)
4718 (void)sprintf(tname,"next char ^%c",yychar+64);
4720 (void)sprintf(tname,"next char %c",yychar);
4721 (void)sprintf(buf, "%s at %s line %d, %s\n",
4722 s,SvPVX(GvSV(curcop->cop_filegv)),curcop->cop_line,tname);
4723 if (curcop->cop_line == multi_end && multi_start < multi_end) {
4724 sprintf(buf+strlen(buf),
4725 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
4726 multi_open,multi_close,(long)multi_start);
4732 sv_catpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),buf);
4735 if (++error_count >= 10)
4736 croak("%s has too many errors.\n",
4737 SvPVX(GvSV(curcop->cop_filegv)));