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)
119 static cryptswitch_t cryptswitch_fp = NULL;
125 if (*bufptr == '=') {
127 if (toketype == ANDAND)
128 yylval.ival = OP_ANDASSIGN;
129 else if (toketype == OROR)
130 yylval.ival = OP_ORASSIGN;
142 char *oldbufptr = bufptr;
144 sprintf(tmpbuf, "%s found where operator expected", what);
146 if (oldbufptr == SvPVX(linestr))
147 warn("\t(Missing semicolon on previous line?)\n");
158 char *nl = strrchr(s,'\n');
162 else if (multi_close < 32 || multi_close == 127) {
164 tmpbuf[1] = multi_close ^ 64;
170 *tmpbuf = multi_close;
174 q = strchr(s,'"') ? '\'' : '"';
175 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
183 warn("Use of %s is deprecated", s);
189 deprecate("comma-less variable list");
200 SAVEINT(lex_brackets);
201 SAVEINT(lex_fakebrack);
202 SAVEINT(lex_casemods);
207 SAVEINT(curcop->cop_line);
211 SAVEPPTR(oldoldbufptr);
213 SAVEPPTR(lex_brackstack);
214 SAVEPPTR(lex_casestack);
217 lex_state = LEX_NORMAL;
222 New(899, lex_brackstack, 120, char);
223 New(899, lex_casestack, 12, char);
224 SAVEFREEPV(lex_brackstack);
225 SAVEFREEPV(lex_casestack);
227 *lex_casestack = '\0';
231 SvREFCNT_dec(lex_stuff);
234 SvREFCNT_dec(lex_repl);
239 if (SvREADONLY(linestr))
240 linestr = sv_2mortal(newSVsv(linestr));
241 s = SvPV(linestr, len);
242 if (len && s[len-1] != ';') {
243 if (!(SvFLAGS(linestr) & SVs_TEMP))
244 linestr = sv_2mortal(newSVsv(linestr));
245 sv_catpvn(linestr, "\n;", 2);
248 oldoldbufptr = oldbufptr = bufptr = SvPVX(linestr);
249 bufend = bufptr + SvCUR(linestr);
274 while (*s == ' ' || *s == '\t') s++;
275 if (strnEQ(s, "line ", 5)) {
284 while (*s == ' ' || *s == '\t')
286 if (*s == '"' && (t = strchr(s+1, '"')))
290 return; /* false alarm */
291 for (t = s; !isSPACE(*t); t++) ;
296 curcop->cop_filegv = gv_fetchfile(s);
298 curcop->cop_filegv = gv_fetchfile(origfilename);
300 curcop->cop_line = atoi(n)-1;
307 if (lex_formbrack && lex_brackets <= lex_formbrack) {
308 while (s < bufend && (*s == ' ' || *s == '\t'))
313 while (s < bufend && isSPACE(*s))
315 if (s < bufend && *s == '#') {
316 while (s < bufend && *s != '\n')
321 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
323 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) {
324 if (minus_n || minus_p) {
325 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
326 sv_catpv(linestr,";}");
327 minus_n = minus_p = 0;
330 sv_setpv(linestr,";");
331 oldoldbufptr = oldbufptr = bufptr = s = SvPVX(linestr);
332 bufend = SvPVX(linestr) + SvCUR(linestr);
333 if (preprocess && !in_eval)
334 (void)my_pclose(rsfp);
335 else if ((FILE*)rsfp == stdin)
342 oldoldbufptr = oldbufptr = bufptr = s;
343 bufend = bufptr + SvCUR(linestr);
345 if (perldb && curstash != debstash) {
346 SV *sv = NEWSV(85,0);
348 sv_upgrade(sv, SVt_PVMG);
349 sv_setsv(sv,linestr);
350 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
361 if (oldoldbufptr != last_uni)
363 while (isSPACE(*last_uni))
365 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
366 if ((t = strchr(s, '(')) && t < bufptr)
370 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
377 #define UNI(f) return uni(f,s)
387 last_uni = oldbufptr;
398 #endif /* CRIPPLED_CC */
400 #define LOP(f,x) return lop(f,x,s)
412 last_lop = oldbufptr;
429 nexttype[nexttoke] = type;
431 if (lex_state != LEX_KNOWNEXT) {
432 lex_defer = lex_state;
434 lex_state = LEX_KNOWNEXT;
439 force_word(start,token,check_keyword,allow_pack,allow_tick)
440 register char *start;
449 start = skipspace(start);
452 (allow_pack && *s == ':') ||
453 (allow_tick && *s == '\'') )
455 s = scan_word(s, tokenbuf, allow_pack, &len);
456 if (check_keyword && keyword(tokenbuf, len))
458 if (token == METHOD) {
468 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
469 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
481 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
485 kind == '$' ? SVt_PV :
486 kind == '@' ? SVt_PVAV :
487 kind == '%' ? SVt_PVHV :
505 s = SvPV_force(sv, len);
507 while (s < send && *s != '\\')
514 if (s + 1 < send && (s[1] == '\\'))
515 s++; /* all that, just for this */
520 SvCUR_set(sv, d - SvPVX(sv));
528 register I32 op_type = yylval.ival;
530 if (op_type == OP_NULL) {
531 yylval.opval = lex_op;
535 if (op_type == OP_CONST || op_type == OP_READLINE) {
536 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
543 SAVEINT(lex_brackets);
544 SAVEINT(lex_fakebrack);
545 SAVEINT(lex_casemods);
550 SAVEINT(curcop->cop_line);
553 SAVEPPTR(oldoldbufptr);
555 SAVEPPTR(lex_brackstack);
556 SAVEPPTR(lex_casestack);
561 bufend = bufptr = oldbufptr = oldoldbufptr = SvPVX(linestr);
562 bufend += SvCUR(linestr);
568 New(899, lex_brackstack, 120, char);
569 New(899, lex_casestack, 12, char);
570 SAVEFREEPV(lex_brackstack);
571 SAVEFREEPV(lex_casestack);
573 *lex_casestack = '\0';
575 lex_state = LEX_INTERPCONCAT;
576 curcop->cop_line = multi_start;
578 lex_inwhat = op_type;
579 if (op_type == OP_MATCH || op_type == OP_SUBST)
587 yylval.opval = lex_op;
600 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
604 if (lex_casemods) { /* oops, we've got some unbalanced parens */
605 lex_state = LEX_INTERPCASEMOD;
609 /* Is there a right-hand side to take care of? */
610 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
613 bufend = bufptr = oldbufptr = oldoldbufptr = SvPVX(linestr);
614 bufend += SvCUR(linestr);
620 *lex_casestack = '\0';
622 if (SvCOMPILED(lex_repl)) {
623 lex_state = LEX_INTERPNORMAL;
627 lex_state = LEX_INTERPCONCAT;
633 bufend = SvPVX(linestr);
634 bufend += SvCUR(linestr);
644 register char *send = bufend;
645 SV *sv = NEWSV(93, send - start);
646 register char *s = start;
647 register char *d = SvPVX(sv);
648 char delim = SvIVX(linestr);
649 bool dorange = FALSE;
653 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]}"
654 : (lex_inwhat & OP_TRANS)
658 while (s < send || dorange) {
659 if (lex_inwhat == OP_TRANS) {
664 SvGROW(sv, SvLEN(sv) + 256);
668 for (i = (*d & 0377); i <= max; i++)
673 else if (*s == '-' && s+1 < send && s != start) {
678 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
680 else if (*s == '$') {
681 if (!lex_inpat) /* not a regexp, so $ must be var */
683 if (s + 1 < send && !strchr(")| \n\t", s[1]))
684 break; /* in regexp, $ might be tail anchor */
686 if (*s == '\\' && s+1 < send) {
694 if (*s && strchr(leave, *s)) {
699 if (lex_inwhat == OP_SUBST && !lex_inpat &&
700 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
703 warn("\\%c better written as $%c", *s, *s);
707 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
713 if (lex_inwhat == OP_TRANS) {
721 case '0': case '1': case '2': case '3':
722 case '4': case '5': case '6': case '7':
723 *d++ = scan_oct(s, 3, &len);
727 *d++ = scan_hex(++s, 2, &len);
765 SvCUR_set(sv, d - SvPVX(sv));
768 if (SvCUR(sv) + 5 < SvLEN(sv)) {
769 SvLEN_set(sv, SvCUR(sv) + 1);
770 Renew(SvPVX(sv), SvLEN(sv), char);
773 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
779 /* This is the one truly awful dwimmer necessary to conflate C and sed. */
786 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
788 if (*s != '{' && *s != '[')
793 /* In a pattern, so maybe we have {n,m}. */
810 /* On the other hand, maybe we have a character class */
813 if (*s == ']' || *s == '^')
816 int weight = 2; /* let's weigh the evidence */
818 unsigned char un_char = 0, last_un_char;
819 char *send = strchr(s,']');
822 if (!send) /* has to be an expression */
828 else if (isDIGIT(*s)) {
830 if (isDIGIT(s[1]) && s[2] == ']')
836 for (; s < send; s++) {
837 last_un_char = un_char;
838 un_char = (unsigned char)*s;
843 weight -= seen[un_char] * 10;
845 scan_ident(s,send,tmpbuf,FALSE);
846 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
851 else if (*s == '$' && s[1] &&
852 strchr("[#!%*<>()-=",s[1])) {
853 if (/*{*/ strchr("])} =",s[2]))
862 if (strchr("wds]",s[1]))
864 else if (seen['\''] || seen['"'])
866 else if (strchr("rnftbxcav",s[1]))
868 else if (isDIGIT(s[1])) {
870 while (s[1] && isDIGIT(s[1]))
880 if (strchr("aA01! ",last_un_char))
882 if (strchr("zZ79~",s[1]))
886 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
887 isALPHA(*s) && s[1] && isALPHA(s[1])) {
892 if (keyword(tmpbuf, d - tmpbuf))
895 if (un_char == last_un_char + 1)
897 weight -= seen[un_char];
902 if (weight >= 0) /* probably a character class */
910 intuit_method(start,gv)
914 char *s = start + (*start == '$');
925 s = scan_word(s, tmpbuf, TRUE, &len);
927 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
932 return *s == '(' ? FUNCMETH : METHOD;
934 if (!keyword(tmpbuf, len)) {
935 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
936 if (indirgv && GvCV(indirgv))
938 /* filehandle or package name makes it a method */
939 if (!gv || GvIO(indirgv) || gv_stashpv(tmpbuf, FALSE)) {
941 nextval[nexttoke].opval =
942 (OP*)newSVOP(OP_CONST, 0,
944 nextval[nexttoke].opval->op_private =
949 return *s == '(' ? FUNCMETH : METHOD;
959 char *pdb = getenv("PERL5DB");
963 return "BEGIN { require 'perl5db.pl' }";
969 /* Encrypted script support: cryptswitch_add() may be called to */
970 /* define a function which may manipulate the input stream */
971 /* (via popen() etc) to decode the input if required. */
972 /* At the moment we only allow one cryptswitch function. */
974 cryptswitch_add(funcp)
977 cryptswitch_fp = funcp;
981 static char* exp_name[] =
982 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
984 extern int yychar; /* last token */
996 case LEX_NORMAL: /* Some compilers will produce faster */
997 case LEX_INTERPNORMAL: /* code if we comment these out. */
1003 yylval = nextval[nexttoke];
1005 lex_state = lex_defer;
1006 expect = lex_expect;
1007 lex_defer = LEX_NORMAL;
1009 return(nexttype[nexttoke]);
1011 case LEX_INTERPCASEMOD:
1013 if (bufptr != bufend && *bufptr != '\\')
1014 croak("panic: INTERPCASEMOD");
1016 if (bufptr == bufend || bufptr[1] == 'E') {
1019 oldmod = lex_casestack[--lex_casemods];
1020 lex_casestack[lex_casemods] = '\0';
1021 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1023 lex_state = LEX_INTERPCONCAT;
1027 if (bufptr != bufend)
1029 lex_state = LEX_INTERPCONCAT;
1034 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1035 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
1036 if (strchr("LU", *s) &&
1037 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1039 lex_casestack[--lex_casemods] = '\0';
1042 if (lex_casemods > 10) {
1043 char* newlb = (char*)realloc(lex_casestack, lex_casemods + 2);
1044 if (newlb != lex_casestack) {
1046 lex_casestack = newlb;
1049 lex_casestack[lex_casemods++] = *s;
1050 lex_casestack[lex_casemods] = '\0';
1051 lex_state = LEX_INTERPCONCAT;
1052 nextval[nexttoke].ival = 0;
1055 nextval[nexttoke].ival = OP_LCFIRST;
1057 nextval[nexttoke].ival = OP_UCFIRST;
1059 nextval[nexttoke].ival = OP_LC;
1061 nextval[nexttoke].ival = OP_UC;
1063 nextval[nexttoke].ival = OP_QUOTEMETA;
1065 croak("panic: yylex");
1077 case LEX_INTERPSTART:
1078 if (bufptr == bufend)
1079 return sublex_done();
1081 lex_dojoin = (*bufptr == '@');
1082 lex_state = LEX_INTERPNORMAL;
1084 nextval[nexttoke].ival = 0;
1086 force_ident("\"", '$');
1087 nextval[nexttoke].ival = 0;
1089 nextval[nexttoke].ival = 0;
1091 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1102 case LEX_INTERPENDMAYBE:
1103 if (intuit_more(bufptr)) {
1104 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1112 lex_state = LEX_INTERPCONCAT;
1116 case LEX_INTERPCONCAT:
1119 croak("panic: INTERPCONCAT");
1121 if (bufptr == bufend)
1122 return sublex_done();
1124 if (SvIVX(linestr) == '\'') {
1125 SV *sv = newSVsv(linestr);
1128 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1132 s = scan_const(bufptr);
1134 lex_state = LEX_INTERPCASEMOD;
1136 lex_state = LEX_INTERPSTART;
1140 nextval[nexttoke] = yylval;
1153 lex_state = LEX_NORMAL;
1154 s = scan_formline(bufptr);
1161 oldoldbufptr = oldbufptr;
1164 fprintf(stderr,"### Tokener expecting %s at %s\n", exp_name[expect], s);
1170 warn("Unrecognized character \\%03o ignored", *s++ & 255);
1174 goto fake_eof; /* emulate EOF on ^D or ^Z */
1178 yyerror("Missing right bracket");
1182 goto retry; /* ignore stray nulls */
1185 if (!in_eval && !preambled) {
1187 sv_setpv(linestr,incl_perldb());
1188 if (autoboot_preamble)
1189 sv_catpv(linestr, autoboot_preamble);
1190 if (minus_n || minus_p) {
1191 sv_catpv(linestr, "LINE: while (<>) {");
1193 sv_catpv(linestr,"chomp;");
1197 if ( splitstr[0] == '/' ||
1198 splitstr[0] == '\'' ||
1199 splitstr[0] == '"' )
1200 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1202 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1203 sv_catpv(linestr,tmpbuf1);
1206 sv_catpv(linestr,"@F=split(' ');");
1209 sv_catpv(linestr, "\n");
1210 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1211 bufend = SvPVX(linestr) + SvCUR(linestr);
1212 if (perldb && curstash != debstash) {
1213 SV *sv = NEWSV(85,0);
1215 sv_upgrade(sv, SVt_PVMG);
1216 sv_setsv(sv,linestr);
1217 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1221 /* Give cryptswitch a chance. Note that cryptswitch_fp may */
1222 /* be called several times owing to "goto retry;"'s below. */
1224 rsfp = (*cryptswitch_fp)(rsfp);
1226 if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) {
1229 if (preprocess && !in_eval)
1230 (void)my_pclose(rsfp);
1231 else if ((FILE*)rsfp == stdin)
1237 if (!in_eval && (minus_n || minus_p)) {
1238 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1239 sv_catpv(linestr,";}");
1240 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1241 bufend = SvPVX(linestr) + SvCUR(linestr);
1242 minus_n = minus_p = 0;
1245 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1246 sv_setpv(linestr,"");
1247 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
1250 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1253 /* Incest with pod. */
1254 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1255 sv_setpv(linestr, "");
1256 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1257 bufend = SvPVX(linestr) + SvCUR(linestr);
1262 } while (doextract);
1263 oldoldbufptr = oldbufptr = bufptr = s;
1264 if (perldb && curstash != debstash) {
1265 SV *sv = NEWSV(85,0);
1267 sv_upgrade(sv, SVt_PVMG);
1268 sv_setsv(sv,linestr);
1269 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1271 bufend = SvPVX(linestr) + SvCUR(linestr);
1272 if (curcop->cop_line == 1) {
1273 while (s < bufend && isSPACE(*s))
1275 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
1277 if (!in_eval && *s == '#' && s[1] == '!') {
1278 if (!instr(s,"perl") && !instr(s,"indir") &&
1279 instr(origargv[0],"perl")) {
1287 while (s < bufend && !isSPACE(*s))
1290 while (s < bufend && isSPACE(*s))
1293 Newz(899,newargv,origargc+3,char*);
1295 while (s < bufend && !isSPACE(*s))
1298 Copy(origargv+1, newargv+2, origargc+1, char*);
1304 croak("Can't exec %s", cmd);
1306 if (d = instr(s, "perl -")) {
1307 int oldpdb = perldb;
1312 while (d = moreswitches(d)) ;
1313 if (perldb && !oldpdb ||
1317 sv_setpv(linestr, "");
1318 oldoldbufptr = oldbufptr = s = SvPVX(linestr);
1319 bufend = SvPVX(linestr) + SvCUR(linestr);
1322 (void)gv_fetchfile(origfilename);
1328 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1330 lex_state = LEX_FORMLINE;
1334 case ' ': case '\t': case '\f': case '\r': case 013:
1339 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
1341 while (s < d && *s != '\n')
1346 if (lex_formbrack && lex_brackets <= lex_formbrack) {
1348 lex_state = LEX_FORMLINE;
1358 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
1360 last_uni = oldbufptr;
1361 last_lop_op = OP_FTEREAD; /* good enough */
1363 case 'r': FTST(OP_FTEREAD);
1364 case 'w': FTST(OP_FTEWRITE);
1365 case 'x': FTST(OP_FTEEXEC);
1366 case 'o': FTST(OP_FTEOWNED);
1367 case 'R': FTST(OP_FTRREAD);
1368 case 'W': FTST(OP_FTRWRITE);
1369 case 'X': FTST(OP_FTREXEC);
1370 case 'O': FTST(OP_FTROWNED);
1371 case 'e': FTST(OP_FTIS);
1372 case 'z': FTST(OP_FTZERO);
1373 case 's': FTST(OP_FTSIZE);
1374 case 'f': FTST(OP_FTFILE);
1375 case 'd': FTST(OP_FTDIR);
1376 case 'l': FTST(OP_FTLINK);
1377 case 'p': FTST(OP_FTPIPE);
1378 case 'S': FTST(OP_FTSOCK);
1379 case 'u': FTST(OP_FTSUID);
1380 case 'g': FTST(OP_FTSGID);
1381 case 'k': FTST(OP_FTSVTX);
1382 case 'b': FTST(OP_FTBLK);
1383 case 'c': FTST(OP_FTCHR);
1384 case 't': FTST(OP_FTTTY);
1385 case 'T': FTST(OP_FTTEXT);
1386 case 'B': FTST(OP_FTBINARY);
1387 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1388 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1389 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
1398 if (expect == XOPERATOR)
1403 else if (*s == '>') {
1406 if (isIDFIRST(*s)) {
1407 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
1413 if (expect == XOPERATOR)
1416 if (isSPACE(*s) || !isSPACE(*bufptr))
1418 OPERATOR('-'); /* unary minus */
1425 if (expect == XOPERATOR)
1430 if (expect == XOPERATOR)
1433 if (isSPACE(*s) || !isSPACE(*bufptr))
1439 if (expect != XOPERATOR) {
1440 s = scan_ident(s, bufend, tokenbuf, TRUE);
1442 force_ident(tokenbuf, '*');
1455 if (expect != XOPERATOR) {
1456 s = scan_ident(s, bufend, tokenbuf + 1, TRUE);
1461 if (strchr(tokenbuf,':'))
1462 croak("\"my\" variable %s can't be in a package",tokenbuf);
1463 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1464 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1465 force_next(PRIVATEREF);
1468 if (!strchr(tokenbuf,':')) {
1469 if (tmp = pad_findmy(tokenbuf)) {
1470 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1471 nextval[nexttoke].opval->op_targ = tmp;
1472 force_next(PRIVATEREF);
1476 force_ident(tokenbuf + 1, *tokenbuf);
1504 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
1505 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
1510 if (curcop->cop_line < copline)
1511 copline = curcop->cop_line;
1519 if (lex_brackets <= 0)
1520 yyerror("Unmatched right bracket");
1523 if (lex_state == LEX_INTERPNORMAL) {
1524 if (lex_brackets == 0) {
1525 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1526 lex_state = LEX_INTERPEND;
1533 if (lex_brackets > 100) {
1534 char* newlb = (char*)realloc(lex_brackstack, lex_brackets + 1);
1535 if (newlb != lex_brackstack) {
1537 lex_brackstack = newlb;
1542 if (lex_formbrack) {
1546 if (oldoldbufptr == last_lop)
1547 lex_brackstack[lex_brackets++] = XTERM;
1549 lex_brackstack[lex_brackets++] = XOPERATOR;
1550 OPERATOR(HASHBRACK);
1554 lex_brackstack[lex_brackets++] = XSTATE;
1558 lex_brackstack[lex_brackets++] = XOPERATOR;
1563 if (oldoldbufptr == last_lop)
1564 lex_brackstack[lex_brackets++] = XTERM;
1566 lex_brackstack[lex_brackets++] = XOPERATOR;
1569 OPERATOR(HASHBRACK);
1571 for (t = s; t < bufend && isALPHA(*t); t++) ;
1573 else if (*s == '\'' || *s == '"') {
1580 while (t < bufend && isSPACE(*t))
1582 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1583 OPERATOR(HASHBRACK);
1587 lex_brackstack[lex_brackets-1] = XSTATE;
1593 yylval.ival = curcop->cop_line;
1594 if (isSPACE(*s) || *s == '#')
1595 copline = NOLINE; /* invalidate current command line number */
1600 if (lex_brackets <= 0)
1601 yyerror("Unmatched right bracket");
1603 expect = (expectation)lex_brackstack[--lex_brackets];
1604 if (lex_brackets < lex_formbrack)
1606 if (lex_state == LEX_INTERPNORMAL) {
1607 if (lex_brackets == 0) {
1608 if (lex_fakebrack) {
1609 lex_state = LEX_INTERPEND;
1611 return yylex(); /* ignore fake brackets */
1613 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
1614 lex_state = LEX_INTERPEND;
1625 if (expect == XOPERATOR) {
1626 if (isALPHA(*s) && bufptr == SvPVX(linestr)) {
1634 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
1637 force_ident(tokenbuf, '&');
1659 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
1660 warn("Reversed %c= operator",tmp);
1662 if (isALPHA(tmp) && s == SvPVX(linestr)+1) {
1667 if (lex_brackets < lex_formbrack) {
1669 for (t = s; *t == ' ' || *t == '\t'; t++) ;
1670 if (*t == '\n' || *t == '#') {
1688 if (expect != XOPERATOR) {
1689 if (s[1] != '<' && !strchr(s,'>'))
1692 s = scan_heredoc(s);
1694 s = scan_inputsymbol(s);
1695 TERM(sublex_start());
1700 SHop(OP_LEFT_SHIFT);
1714 SHop(OP_RIGHT_SHIFT);
1721 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$", s[2]))) {
1722 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
1723 if (expect == XOPERATOR) {
1724 if (lex_formbrack && lex_brackets == lex_formbrack) {
1727 return ','; /* grandfather non-comma-format format */
1730 no_op("Array length",s);
1732 else if (!tokenbuf[1])
1734 if (!strchr(tokenbuf+1,':')) {
1736 if (tmp = pad_findmy(tokenbuf)) {
1737 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1738 nextval[nexttoke].opval->op_targ = tmp;
1740 force_next(PRIVATEREF);
1745 force_ident(tokenbuf+1, *tokenbuf);
1748 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
1749 if (expect == XOPERATOR) {
1750 if (lex_formbrack && lex_brackets == lex_formbrack) {
1753 return ','; /* grandfather non-comma-format format */
1759 expectation oldexpect = expect;
1761 /* This kludge not intended to be bulletproof. */
1762 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
1763 yylval.opval = newSVOP(OP_CONST, OPf_SPECIAL,
1764 newSViv((IV)compiling.cop_arybase));
1770 if (*s == '[' && oldexpect != XREF) {
1771 for (t = s+1; isSPACE(*t) || isALNUM(*t) || *t == '$'; t++) ;
1773 bufptr = skipspace(bufptr);
1774 while (t < bufend && *t != ']') t++;
1775 warn("Multidimensional syntax %.*s not supported",
1776 t-bufptr+1, bufptr);
1779 if (*s == '{' && strEQ(tokenbuf, "$SIG") &&
1780 (t = strchr(s,'}')) && (t = strchr(t,'='))) {
1784 for (t++; isSPACE(*t); t++) ;
1785 t = scan_word(t, tmpbuf, TRUE, &len);
1786 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
1787 warn("You need to quote \"%s\"", tmpbuf);
1791 if (lex_state == LEX_NORMAL && isSPACE(*s)) {
1792 bool islop = (last_lop == oldoldbufptr);
1794 if (!islop || last_lop_op == OP_GREPSTART)
1796 else if (strchr("$@\"'`q", *s))
1797 expect = XTERM; /* e.g. print $fh "foo" */
1798 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
1799 expect = XTERM; /* e.g. print $fh &sub */
1800 else if (isDIGIT(*s))
1801 expect = XTERM; /* e.g. print $fh 3 */
1802 else if (*s == '.' && isDIGIT(s[1]))
1803 expect = XTERM; /* e.g. print $fh .3 */
1804 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
1805 expect = XTERM; /* e.g. print $fh -1 */
1806 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
1807 expect = XTERM; /* print $fh <<"EOF" */
1810 if (strchr(tokenbuf,':'))
1811 croak("\"my\" variable %s can't be in a package",tokenbuf);
1812 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1813 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1814 force_next(PRIVATEREF);
1816 else if (!strchr(tokenbuf,':')) {
1817 if (oldexpect != XREF) {
1823 if (tmp = pad_findmy(tokenbuf)) {
1824 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1825 nextval[nexttoke].opval->op_targ = tmp;
1826 force_next(PRIVATEREF);
1829 force_ident(tokenbuf+1, *tokenbuf);
1832 force_ident(tokenbuf+1, *tokenbuf);
1836 yyerror("Final $ should be \\$ or $name");
1842 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
1843 if (expect == XOPERATOR)
1851 if (strchr(tokenbuf,':'))
1852 croak("\"my\" variable %s can't be in a package",tokenbuf);
1853 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1854 nextval[nexttoke].opval->op_targ = pad_allocmy(tokenbuf);
1855 force_next(PRIVATEREF);
1858 else if (!strchr(tokenbuf,':')) {
1861 if (tmp = pad_findmy(tokenbuf)) {
1862 nextval[nexttoke].opval = newOP(OP_PADANY, 0);
1863 nextval[nexttoke].opval->op_targ = tmp;
1864 force_next(PRIVATEREF);
1869 /* Force them to make up their mind on "@foo". */
1870 if (lex_state != LEX_NORMAL &&
1871 ( !(gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV)) ||
1877 sprintf(tmpbuf, "Literal @%s now requires backslash",tokenbuf+1);
1881 /* Warn about @ where they meant $. */
1883 if (*s == '[' || *s == '{') {
1885 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
1887 if (*t == '}' || *t == ']') {
1889 bufptr = skipspace(bufptr);
1890 warn("Scalar value %.*s better written as $%.*s",
1891 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
1895 force_ident(tokenbuf+1, *tokenbuf);
1899 yyerror("Final @ should be \\@ or @name");
1904 case '/': /* may either be division or pattern */
1905 case '?': /* may either be conditional or pattern */
1906 if (expect != XOPERATOR) {
1909 TERM(sublex_start());
1917 if (lex_formbrack && lex_brackets == lex_formbrack && s == oldbufptr) {
1922 if (expect == XOPERATOR || !isDIGIT(s[1])) {
1928 yylval.ival = OPf_SPECIAL;
1934 if (expect != XOPERATOR)
1939 case '0': case '1': case '2': case '3': case '4':
1940 case '5': case '6': case '7': case '8': case '9':
1942 if (expect == XOPERATOR)
1948 if (expect == XOPERATOR) {
1949 if (lex_formbrack && lex_brackets == lex_formbrack) {
1952 return ','; /* grandfather non-comma-format format */
1958 missingterm((char*)0);
1959 yylval.ival = OP_CONST;
1960 TERM(sublex_start());
1964 if (expect == XOPERATOR) {
1965 if (lex_formbrack && lex_brackets == lex_formbrack) {
1968 return ','; /* grandfather non-comma-format format */
1974 missingterm((char*)0);
1975 yylval.ival = OP_STRINGIFY;
1976 TERM(sublex_start());
1980 if (expect == XOPERATOR)
1981 no_op("Backticks",s);
1983 missingterm((char*)0);
1984 yylval.ival = OP_BACKTICK;
1986 TERM(sublex_start());
1990 if (expect == XOPERATOR)
1991 no_op("Backslash",s);
1995 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2031 s = scan_word(s, tokenbuf, FALSE, &len);
2033 tmp = keyword(tokenbuf, len);
2034 if (tmp < 0) { /* second-class keyword? */
2036 if (expect != XOPERATOR &&
2037 (*s != ':' || s[1] != ':') &&
2038 (gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV)) &&
2039 (GvFLAGS(gv) & GVf_IMPORTED) &&
2051 default: /* not a keyword */
2055 /* Get the rest if it looks like a package qualifier */
2057 if (*s == '\'' || *s == ':' && s[1] == ':') {
2058 s = scan_word(s, tokenbuf + len, TRUE, &len);
2060 croak("Bad name after %s::", tokenbuf);
2063 /* Do special processing at start of statement. */
2065 if (expect == XSTATE) {
2066 while (isSPACE(*s)) s++;
2067 if (*s == ':') { /* It's a label. */
2068 yylval.pval = savepv(tokenbuf);
2074 else if (expect == XOPERATOR) {
2075 if (bufptr == SvPVX(linestr)) {
2081 no_op("Bare word",s);
2084 /* Look for a subroutine with this name in current package. */
2086 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
2088 /* Presume this is going to be a bareword of some sort. */
2091 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2092 yylval.opval->op_private = OPpCONST_BARE;
2094 /* See if it's the indirect object for a list operator. */
2097 oldoldbufptr < bufptr &&
2098 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2099 /* NO SKIPSPACE BEFORE HERE! */
2101 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2103 /* (Now we can afford to cross potential line boundary.) */
2106 /* Two barewords in a row may indicate method call. */
2108 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2111 /* If not a declared subroutine, it's an indirect object. */
2112 /* (But it's an indir obj regardless for sort.) */
2114 if (last_lop_op == OP_SORT || !gv || !GvCV(gv)) {
2115 expect = last_lop == oldoldbufptr ? XTERM : XOPERATOR;
2116 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2118 warn(warn_reserved, tokenbuf);
2123 /* If followed by a paren, it's certainly a subroutine. */
2129 nextval[nexttoke].opval = yylval.opval;
2135 /* If followed by var or block, call it a method (unless sub) */
2137 if ((*s == '$' || *s == '{') && (!gv || !GvCV(gv))) {
2138 last_lop = oldbufptr;
2139 last_lop_op = OP_METHOD;
2143 /* If followed by a bareword, see if it looks like indir obj. */
2145 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2148 /* Not a method, so call it a subroutine (if defined) */
2150 if (gv && GvCV(gv)) {
2151 nextval[nexttoke].opval = yylval.opval;
2157 last_lop = oldbufptr;
2158 last_lop_op = OP_ENTERSUB;
2163 else if (hints & HINT_STRICT_SUBS &&
2165 last_lop_op != OP_ACCEPT &&
2166 last_lop_op != OP_PIPE_OP &&
2167 last_lop_op != OP_SOCKPAIR)
2170 "Bareword \"%s\" not allowed while \"strict subs\" in use",
2175 /* Call it a bare word */
2177 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2179 warn(warn_reserved, tokenbuf);
2184 case KEY___FILE__: {
2185 if (tokenbuf[2] == 'L')
2186 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2188 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
2189 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2198 gv = gv_fetchpv("DATA",TRUE, SVt_PVIO);
2201 GvIOp(gv) = newIO();
2202 IoIFP(GvIOp(gv)) = rsfp;
2203 #if defined(HAS_FCNTL) && defined(F_SETFD)
2205 int fd = fileno(rsfp);
2206 fcntl(fd,F_SETFD,fd >= 3);
2210 IoTYPE(GvIOp(gv)) = '|';
2211 else if ((FILE*)rsfp == stdin)
2212 IoTYPE(GvIOp(gv)) = '-';
2214 IoTYPE(GvIOp(gv)) = '<';
2224 if (expect == XSTATE) {
2231 if (*s == ':' && s[1] == ':') {
2233 s = scan_word(s, tokenbuf, FALSE, &len);
2234 tmp = keyword(tokenbuf, len);
2248 LOP(OP_ACCEPT,XTERM);
2254 LOP(OP_ATAN2,XTERM);
2263 LOP(OP_BLESS,XTERM);
2272 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
2292 LOP(OP_CRYPT,XTERM);
2296 if (dowarn && *s != '0' && isDIGIT(*s))
2297 yywarn("chmod: mode argument is missing initial 0");
2298 LOP(OP_CHMOD,XTERM);
2301 LOP(OP_CHOWN,XTERM);
2304 LOP(OP_CONNECT,XTERM);
2320 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2324 hints |= HINT_BLOCK_SCOPE;
2334 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2335 LOP(OP_DBMOPEN,XTERM);
2341 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2348 yylval.ival = curcop->cop_line;
2362 expect = (*s == '{') ? XTERMBLOCK : XTERM;
2363 UNIBRACK(OP_ENTEREVAL);
2378 case KEY_endhostent:
2384 case KEY_endservent:
2387 case KEY_endprotoent:
2398 yylval.ival = curcop->cop_line;
2399 while (s < bufend && isSPACE(*s))
2402 croak("Missing $ on loop variable");
2406 LOP(OP_FORMLINE,XTERM);
2412 LOP(OP_FCNTL,XTERM);
2418 LOP(OP_FLOCK,XTERM);
2427 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
2430 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2445 case KEY_getpriority:
2446 LOP(OP_GETPRIORITY,XTERM);
2448 case KEY_getprotobyname:
2451 case KEY_getprotobynumber:
2452 LOP(OP_GPBYNUMBER,XTERM);
2454 case KEY_getprotoent:
2466 case KEY_getpeername:
2467 UNI(OP_GETPEERNAME);
2469 case KEY_gethostbyname:
2472 case KEY_gethostbyaddr:
2473 LOP(OP_GHBYADDR,XTERM);
2475 case KEY_gethostent:
2478 case KEY_getnetbyname:
2481 case KEY_getnetbyaddr:
2482 LOP(OP_GNBYADDR,XTERM);
2487 case KEY_getservbyname:
2488 LOP(OP_GSBYNAME,XTERM);
2490 case KEY_getservbyport:
2491 LOP(OP_GSBYPORT,XTERM);
2493 case KEY_getservent:
2496 case KEY_getsockname:
2497 UNI(OP_GETSOCKNAME);
2499 case KEY_getsockopt:
2500 LOP(OP_GSOCKOPT,XTERM);
2522 yylval.ival = curcop->cop_line;
2526 LOP(OP_INDEX,XTERM);
2532 LOP(OP_IOCTL,XTERM);
2544 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2576 LOP(OP_LISTEN,XTERM);
2583 TERM(sublex_start());
2586 LOP(OP_MAPSTART,XREF);
2589 LOP(OP_MKDIR,XTERM);
2592 LOP(OP_MSGCTL,XTERM);
2595 LOP(OP_MSGGET,XTERM);
2598 LOP(OP_MSGRCV,XTERM);
2601 LOP(OP_MSGSND,XTERM);
2609 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2616 if (expect != XSTATE)
2617 yyerror("\"no\" not allowed in expression");
2618 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2627 if (isIDFIRST(*s)) {
2629 for (d = s; isALNUM(*d); d++) ;
2631 if (strchr("|&*+-=!?:.", *t))
2632 warn("Precedence problem: open %.*s should be open(%.*s)",
2638 yylval.ival = OP_OR;
2648 LOP(OP_OPEN_DIR,XTERM);
2651 checkcomma(s,tokenbuf,"filehandle");
2655 checkcomma(s,tokenbuf,"filehandle");
2671 s = force_word(s,WORD,FALSE,TRUE,FALSE);
2675 LOP(OP_PIPE_OP,XTERM);
2680 missingterm((char*)0);
2681 yylval.ival = OP_CONST;
2682 TERM(sublex_start());
2690 missingterm((char*)0);
2692 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
2696 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
2699 yylval.ival = OP_SPLIT;
2703 last_lop = oldbufptr;
2704 last_lop_op = OP_SPLIT;
2710 missingterm((char*)0);
2711 yylval.ival = OP_STRINGIFY;
2712 if (SvIVX(lex_stuff) == '\'')
2713 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
2714 TERM(sublex_start());
2719 missingterm((char*)0);
2720 yylval.ival = OP_BACKTICK;
2722 TERM(sublex_start());
2728 s = force_word(s,WORD,TRUE,TRUE,FALSE);
2730 yyerror("<> should be quotes");
2737 s = force_word(s,WORD,TRUE,FALSE,FALSE);
2741 LOP(OP_RENAME,XTERM);
2750 LOP(OP_RINDEX,XTERM);
2773 LOP(OP_REVERSE,XTERM);
2784 TERM(sublex_start());
2786 TOKEN(1); /* force error */
2795 LOP(OP_SELECT,XTERM);
2801 LOP(OP_SEMCTL,XTERM);
2804 LOP(OP_SEMGET,XTERM);
2807 LOP(OP_SEMOP,XTERM);
2813 LOP(OP_SETPGRP,XTERM);
2815 case KEY_setpriority:
2816 LOP(OP_SETPRIORITY,XTERM);
2818 case KEY_sethostent:
2824 case KEY_setservent:
2827 case KEY_setprotoent:
2837 LOP(OP_SEEKDIR,XTERM);
2839 case KEY_setsockopt:
2840 LOP(OP_SSOCKOPT,XTERM);
2846 LOP(OP_SHMCTL,XTERM);
2849 LOP(OP_SHMGET,XTERM);
2852 LOP(OP_SHMREAD,XTERM);
2855 LOP(OP_SHMWRITE,XTERM);
2858 LOP(OP_SHUTDOWN,XTERM);
2867 LOP(OP_SOCKET,XTERM);
2869 case KEY_socketpair:
2870 LOP(OP_SOCKPAIR,XTERM);
2873 checkcomma(s,tokenbuf,"subroutine name");
2875 if (*s == ';' || *s == ')') /* probably a close */
2876 croak("sort is now a reserved word");
2878 s = force_word(s,WORD,TRUE,TRUE,TRUE);
2882 LOP(OP_SPLIT,XTERM);
2885 LOP(OP_SPRINTF,XTERM);
2888 LOP(OP_SPLICE,XTERM);
2904 LOP(OP_SUBSTR,XTERM);
2910 if (*s == '{' && tmp == KEY_sub) {
2911 sv_setpv(subname,"__ANON__");
2912 PRETERMBLOCK(ANONSUB);
2915 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
2917 d = scan_word(s, tmpbuf, TRUE, &len);
2918 if (strchr(tmpbuf, ':'))
2919 sv_setpv(subname, tmpbuf);
2921 sv_setsv(subname,curstname);
2922 sv_catpvn(subname,"::",2);
2923 sv_catpvn(subname,tmpbuf,len);
2925 s = force_word(s,WORD,FALSE,TRUE,TRUE);
2928 sv_setpv(subname,"?");
2930 if (tmp != KEY_format)
2935 lex_formbrack = lex_brackets + 1;
2940 LOP(OP_SYSTEM,XREF);
2943 LOP(OP_SYMLINK,XTERM);
2946 LOP(OP_SYSCALL,XTERM);
2949 LOP(OP_SYSREAD,XTERM);
2952 LOP(OP_SYSWRITE,XTERM);
2956 TERM(sublex_start());
2974 LOP(OP_TRUNCATE,XTERM);
2986 yylval.ival = curcop->cop_line;
2990 yylval.ival = curcop->cop_line;
2994 LOP(OP_UNLINK,XTERM);
3000 LOP(OP_UNPACK,XTERM);
3003 LOP(OP_UTIME,XTERM);
3007 if (dowarn && *s != '0' && isDIGIT(*s))
3008 warn("umask: argument is missing initial 0");
3012 LOP(OP_UNSHIFT,XTERM);
3015 if (expect != XSTATE)
3016 yyerror("\"use\" not allowed in expression");
3017 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3029 yylval.ival = curcop->cop_line;
3033 hints |= HINT_BLOCK_SCOPE;
3040 LOP(OP_WAITPID,XTERM);
3046 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
3050 if (expect == XOPERATOR)
3056 yylval.ival = OP_XOR;
3061 TERM(sublex_start());
3074 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3075 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
3076 if (strEQ(d,"__END__")) return KEY___END__;
3080 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3085 if (strEQ(d,"and")) return -KEY_and;
3086 if (strEQ(d,"abs")) return -KEY_abs;
3089 if (strEQ(d,"alarm")) return -KEY_alarm;
3090 if (strEQ(d,"atan2")) return -KEY_atan2;
3093 if (strEQ(d,"accept")) return -KEY_accept;
3098 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
3101 if (strEQ(d,"bless")) return -KEY_bless;
3102 if (strEQ(d,"bind")) return -KEY_bind;
3103 if (strEQ(d,"binmode")) return -KEY_binmode;
3106 if (strEQ(d,"CORE")) return -KEY_CORE;
3111 if (strEQ(d,"cmp")) return -KEY_cmp;
3112 if (strEQ(d,"chr")) return -KEY_chr;
3113 if (strEQ(d,"cos")) return -KEY_cos;
3116 if (strEQ(d,"chop")) return KEY_chop;
3119 if (strEQ(d,"close")) return -KEY_close;
3120 if (strEQ(d,"chdir")) return -KEY_chdir;
3121 if (strEQ(d,"chomp")) return KEY_chomp;
3122 if (strEQ(d,"chmod")) return -KEY_chmod;
3123 if (strEQ(d,"chown")) return -KEY_chown;
3124 if (strEQ(d,"crypt")) return -KEY_crypt;
3127 if (strEQ(d,"chroot")) return -KEY_chroot;
3128 if (strEQ(d,"caller")) return -KEY_caller;
3131 if (strEQ(d,"connect")) return -KEY_connect;
3134 if (strEQ(d,"closedir")) return -KEY_closedir;
3135 if (strEQ(d,"continue")) return -KEY_continue;
3140 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3145 if (strEQ(d,"do")) return KEY_do;
3148 if (strEQ(d,"die")) return -KEY_die;
3151 if (strEQ(d,"dump")) return -KEY_dump;
3154 if (strEQ(d,"delete")) return KEY_delete;
3157 if (strEQ(d,"defined")) return KEY_defined;
3158 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
3161 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
3166 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
3167 if (strEQ(d,"END")) return KEY_END;
3172 if (strEQ(d,"eq")) return -KEY_eq;
3175 if (strEQ(d,"eof")) return -KEY_eof;
3176 if (strEQ(d,"exp")) return -KEY_exp;
3179 if (strEQ(d,"else")) return KEY_else;
3180 if (strEQ(d,"exit")) return -KEY_exit;
3181 if (strEQ(d,"eval")) return KEY_eval;
3182 if (strEQ(d,"exec")) return -KEY_exec;
3183 if (strEQ(d,"each")) return KEY_each;
3186 if (strEQ(d,"elsif")) return KEY_elsif;
3189 if (strEQ(d,"exists")) return KEY_exists;
3192 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3193 if (strEQ(d,"endpwent")) return -KEY_endpwent;
3196 if (strEQ(d,"endnetent")) return -KEY_endnetent;
3199 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3200 if (strEQ(d,"endservent")) return -KEY_endservent;
3203 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
3210 if (strEQ(d,"for")) return KEY_for;
3213 if (strEQ(d,"fork")) return -KEY_fork;
3216 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3217 if (strEQ(d,"flock")) return -KEY_flock;
3220 if (strEQ(d,"format")) return KEY_format;
3221 if (strEQ(d,"fileno")) return -KEY_fileno;
3224 if (strEQ(d,"foreach")) return KEY_foreach;
3227 if (strEQ(d,"formline")) return -KEY_formline;
3233 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3234 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
3238 if (strnEQ(d,"get",3)) {
3243 if (strEQ(d,"ppid")) return -KEY_getppid;
3244 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
3247 if (strEQ(d,"pwent")) return -KEY_getpwent;
3248 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3249 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
3252 if (strEQ(d,"peername")) return -KEY_getpeername;
3253 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3254 if (strEQ(d,"priority")) return -KEY_getpriority;
3257 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
3260 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
3264 else if (*d == 'h') {
3265 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3266 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3267 if (strEQ(d,"hostent")) return -KEY_gethostent;
3269 else if (*d == 'n') {
3270 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3271 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3272 if (strEQ(d,"netent")) return -KEY_getnetent;
3274 else if (*d == 's') {
3275 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3276 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3277 if (strEQ(d,"servent")) return -KEY_getservent;
3278 if (strEQ(d,"sockname")) return -KEY_getsockname;
3279 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
3281 else if (*d == 'g') {
3282 if (strEQ(d,"grent")) return -KEY_getgrent;
3283 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3284 if (strEQ(d,"grgid")) return -KEY_getgrgid;
3286 else if (*d == 'l') {
3287 if (strEQ(d,"login")) return -KEY_getlogin;
3289 else if (strEQ(d,"c")) return -KEY_getc;
3294 if (strEQ(d,"gt")) return -KEY_gt;
3295 if (strEQ(d,"ge")) return -KEY_ge;
3298 if (strEQ(d,"grep")) return KEY_grep;
3299 if (strEQ(d,"goto")) return KEY_goto;
3300 if (strEQ(d,"glob")) return -KEY_glob;
3303 if (strEQ(d,"gmtime")) return -KEY_gmtime;
3308 if (strEQ(d,"hex")) return -KEY_hex;
3313 if (strEQ(d,"if")) return KEY_if;
3316 if (strEQ(d,"int")) return -KEY_int;
3319 if (strEQ(d,"index")) return -KEY_index;
3320 if (strEQ(d,"ioctl")) return -KEY_ioctl;
3325 if (strEQ(d,"join")) return -KEY_join;
3329 if (strEQ(d,"keys")) return KEY_keys;
3330 if (strEQ(d,"kill")) return -KEY_kill;
3335 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3336 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
3342 if (strEQ(d,"lt")) return -KEY_lt;
3343 if (strEQ(d,"le")) return -KEY_le;
3344 if (strEQ(d,"lc")) return -KEY_lc;
3347 if (strEQ(d,"log")) return -KEY_log;
3350 if (strEQ(d,"last")) return KEY_last;
3351 if (strEQ(d,"link")) return -KEY_link;
3354 if (strEQ(d,"local")) return KEY_local;
3355 if (strEQ(d,"lstat")) return -KEY_lstat;
3358 if (strEQ(d,"length")) return -KEY_length;
3359 if (strEQ(d,"listen")) return -KEY_listen;
3362 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
3365 if (strEQ(d,"localtime")) return -KEY_localtime;
3371 case 1: return KEY_m;
3373 if (strEQ(d,"my")) return KEY_my;
3376 if (strEQ(d,"map")) return KEY_map;
3379 if (strEQ(d,"mkdir")) return -KEY_mkdir;
3382 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3383 if (strEQ(d,"msgget")) return -KEY_msgget;
3384 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3385 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
3390 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
3393 if (strEQ(d,"next")) return KEY_next;
3394 if (strEQ(d,"ne")) return -KEY_ne;
3395 if (strEQ(d,"not")) return -KEY_not;
3396 if (strEQ(d,"no")) return KEY_no;
3401 if (strEQ(d,"or")) return -KEY_or;
3404 if (strEQ(d,"ord")) return -KEY_ord;
3405 if (strEQ(d,"oct")) return -KEY_oct;
3408 if (strEQ(d,"open")) return -KEY_open;
3411 if (strEQ(d,"opendir")) return -KEY_opendir;
3418 if (strEQ(d,"pop")) return KEY_pop;
3419 if (strEQ(d,"pos")) return KEY_pos;
3422 if (strEQ(d,"push")) return KEY_push;
3423 if (strEQ(d,"pack")) return -KEY_pack;
3424 if (strEQ(d,"pipe")) return -KEY_pipe;
3427 if (strEQ(d,"print")) return KEY_print;
3430 if (strEQ(d,"printf")) return KEY_printf;
3433 if (strEQ(d,"package")) return KEY_package;
3439 if (strEQ(d,"q")) return KEY_q;
3440 if (strEQ(d,"qq")) return KEY_qq;
3441 if (strEQ(d,"qw")) return KEY_qw;
3442 if (strEQ(d,"qx")) return KEY_qx;
3444 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
3449 if (strEQ(d,"ref")) return -KEY_ref;
3452 if (strEQ(d,"read")) return -KEY_read;
3453 if (strEQ(d,"rand")) return -KEY_rand;
3454 if (strEQ(d,"recv")) return -KEY_recv;
3455 if (strEQ(d,"redo")) return KEY_redo;
3458 if (strEQ(d,"rmdir")) return -KEY_rmdir;
3459 if (strEQ(d,"reset")) return -KEY_reset;
3462 if (strEQ(d,"return")) return KEY_return;
3463 if (strEQ(d,"rename")) return -KEY_rename;
3464 if (strEQ(d,"rindex")) return -KEY_rindex;
3467 if (strEQ(d,"require")) return -KEY_require;
3468 if (strEQ(d,"reverse")) return -KEY_reverse;
3469 if (strEQ(d,"readdir")) return -KEY_readdir;
3472 if (strEQ(d,"readlink")) return -KEY_readlink;
3473 if (strEQ(d,"readline")) return -KEY_readline;
3474 if (strEQ(d,"readpipe")) return -KEY_readpipe;
3477 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
3483 case 0: return KEY_s;
3485 if (strEQ(d,"scalar")) return KEY_scalar;
3490 if (strEQ(d,"seek")) return -KEY_seek;
3491 if (strEQ(d,"send")) return -KEY_send;
3494 if (strEQ(d,"semop")) return -KEY_semop;
3497 if (strEQ(d,"select")) return -KEY_select;
3498 if (strEQ(d,"semctl")) return -KEY_semctl;
3499 if (strEQ(d,"semget")) return -KEY_semget;
3502 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
3503 if (strEQ(d,"seekdir")) return -KEY_seekdir;
3506 if (strEQ(d,"setpwent")) return -KEY_setpwent;
3507 if (strEQ(d,"setgrent")) return -KEY_setgrent;
3510 if (strEQ(d,"setnetent")) return -KEY_setnetent;
3513 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
3514 if (strEQ(d,"sethostent")) return -KEY_sethostent;
3515 if (strEQ(d,"setservent")) return -KEY_setservent;
3518 if (strEQ(d,"setpriority")) return -KEY_setpriority;
3519 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
3526 if (strEQ(d,"shift")) return KEY_shift;
3529 if (strEQ(d,"shmctl")) return -KEY_shmctl;
3530 if (strEQ(d,"shmget")) return -KEY_shmget;
3533 if (strEQ(d,"shmread")) return -KEY_shmread;
3536 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
3537 if (strEQ(d,"shutdown")) return -KEY_shutdown;
3542 if (strEQ(d,"sin")) return -KEY_sin;
3545 if (strEQ(d,"sleep")) return -KEY_sleep;
3548 if (strEQ(d,"sort")) return KEY_sort;
3549 if (strEQ(d,"socket")) return -KEY_socket;
3550 if (strEQ(d,"socketpair")) return -KEY_socketpair;
3553 if (strEQ(d,"split")) return KEY_split;
3554 if (strEQ(d,"sprintf")) return -KEY_sprintf;
3555 if (strEQ(d,"splice")) return KEY_splice;
3558 if (strEQ(d,"sqrt")) return -KEY_sqrt;
3561 if (strEQ(d,"srand")) return -KEY_srand;
3564 if (strEQ(d,"stat")) return -KEY_stat;
3565 if (strEQ(d,"study")) return KEY_study;
3568 if (strEQ(d,"substr")) return -KEY_substr;
3569 if (strEQ(d,"sub")) return KEY_sub;
3574 if (strEQ(d,"system")) return -KEY_system;
3577 if (strEQ(d,"sysread")) return -KEY_sysread;
3578 if (strEQ(d,"symlink")) return -KEY_symlink;
3579 if (strEQ(d,"syscall")) return -KEY_syscall;
3582 if (strEQ(d,"syswrite")) return -KEY_syswrite;
3591 if (strEQ(d,"tr")) return KEY_tr;
3594 if (strEQ(d,"tie")) return KEY_tie;
3597 if (strEQ(d,"tell")) return -KEY_tell;
3598 if (strEQ(d,"time")) return -KEY_time;
3601 if (strEQ(d,"times")) return -KEY_times;
3604 if (strEQ(d,"telldir")) return -KEY_telldir;
3607 if (strEQ(d,"truncate")) return -KEY_truncate;
3614 if (strEQ(d,"uc")) return -KEY_uc;
3617 if (strEQ(d,"use")) return KEY_use;
3620 if (strEQ(d,"undef")) return KEY_undef;
3621 if (strEQ(d,"until")) return KEY_until;
3622 if (strEQ(d,"untie")) return KEY_untie;
3623 if (strEQ(d,"utime")) return -KEY_utime;
3624 if (strEQ(d,"umask")) return -KEY_umask;
3627 if (strEQ(d,"unless")) return KEY_unless;
3628 if (strEQ(d,"unpack")) return -KEY_unpack;
3629 if (strEQ(d,"unlink")) return -KEY_unlink;
3632 if (strEQ(d,"unshift")) return KEY_unshift;
3633 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
3638 if (strEQ(d,"values")) return -KEY_values;
3639 if (strEQ(d,"vec")) return -KEY_vec;
3644 if (strEQ(d,"warn")) return -KEY_warn;
3645 if (strEQ(d,"wait")) return -KEY_wait;
3648 if (strEQ(d,"while")) return KEY_while;
3649 if (strEQ(d,"write")) return -KEY_write;
3652 if (strEQ(d,"waitpid")) return -KEY_waitpid;
3655 if (strEQ(d,"wantarray")) return -KEY_wantarray;
3660 if (len == 1) return -KEY_x;
3661 if (strEQ(d,"xor")) return -KEY_xor;
3664 if (len == 1) return KEY_y;
3673 checkcomma(s,name,what)
3680 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
3682 for (w = s+2; *w && level; w++) {
3689 for (; *w && isSPACE(*w); w++) ;
3690 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
3691 warn("%s (...) interpreted as function",name);
3693 while (s < bufend && isSPACE(*s))
3697 while (s < bufend && isSPACE(*s))
3699 if (isIDFIRST(*s)) {
3703 while (s < bufend && isSPACE(*s))
3708 kw = keyword(w, s - w);
3712 croak("No comma allowed after %s", what);
3718 scan_word(s, dest, allow_package, slp)
3724 register char *d = dest;
3728 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
3733 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
3746 scan_ident(s,send,dest,ck_uni)
3748 register char *send;
3755 if (lex_brackets == 0)
3769 else if (*s == '\'' && isIDFIRST(s[1])) {
3774 else if (*s == ':' && s[1] == ':') {
3785 if (lex_state != LEX_NORMAL)
3786 lex_state = LEX_INTERPENDMAYBE;
3789 if (*s == '$' && s[1] && (isALPHA(s[1]) || strchr("$_{", s[1])))
3792 if (lex_state == LEX_NORMAL)
3802 if (*d == '^' && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
3806 if (isALPHA(*d) || *d == '_') {
3811 if ((*s == '[' || *s == '{') && !keyword(dest,d-dest)) {
3813 croak("Can't use delimiter brackets within expression");
3814 lex_fakebrack = TRUE;
3816 lex_brackstack[lex_brackets++] = XOPERATOR;
3822 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
3823 lex_state = LEX_INTERPEND;
3826 s = bracket; /* let the parser handle it */
3830 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
3831 lex_state = LEX_INTERPEND;
3837 scan_prefix(pm,string,len)
3842 register SV *tmpstr;
3846 char *origstring = string;
3848 if (ninstr(string, string+len, vert, vert+1))
3852 tmpstr = NEWSV(86,len);
3853 sv_upgrade(tmpstr, SVt_PVBM);
3854 sv_setpvn(tmpstr,string,len);
3857 BmUSEFUL(tmpstr) = 100;
3858 for (d=t; d < e; ) {
3867 if (d[1] == '?') { /* All bets off. */
3868 SvREFCNT_dec(tmpstr);
3872 case '.': case '[': case '$': case ')': case '|': case '+':
3877 if (d[1] && strchr("AGZwWbB0123456789sSdDlLuUExc",d[1])) {
3881 Move(d+1,d,e-d,char);
3906 if (d[1] == '*' || (d[1] == '{' && d[2] == '0') || d[1] == '?') {
3914 SvREFCNT_dec(tmpstr);
3918 SvCUR_set(tmpstr, d - t);
3920 pm->op_pmflags |= PMf_ALL;
3921 if (*origstring != '^')
3922 pm->op_pmflags |= PMf_SCANFIRST;
3923 pm->op_pmshort = tmpstr;
3924 pm->op_pmslen = d - t;
3928 void pmflag(pmfl,ch)
3937 *pmfl |= PMf_GLOBAL;
3941 *pmfl |= PMf_MULTILINE;
3943 *pmfl |= PMf_SINGLELINE;
3945 *pmfl |= PMf_EXTENDED;
3955 s = scan_str(start);
3958 SvREFCNT_dec(lex_stuff);
3960 croak("Search pattern not terminated");
3962 pm = (PMOP*)newPMOP(OP_MATCH, 0);
3963 if (multi_open == '?')
3964 pm->op_pmflags |= PMf_ONCE;
3966 while (*s && strchr("iogmsx", *s))
3967 pmflag(&pm->op_pmflags,*s++);
3970 yylval.ival = OP_MATCH;
3982 yylval.ival = OP_NULL;
3984 s = scan_str(start);
3988 SvREFCNT_dec(lex_stuff);
3990 croak("Substitution pattern not terminated");
3993 if (s[-1] == multi_open)
3999 SvREFCNT_dec(lex_stuff);
4002 SvREFCNT_dec(lex_repl);
4004 croak("Substitution replacement not terminated");
4007 pm = (PMOP*)newPMOP(OP_SUBST, 0);
4008 while (*s && strchr("iogmsex", *s)) {
4014 pmflag(&pm->op_pmflags,*s++);
4019 pm->op_pmflags |= PMf_EVAL;
4020 repl = newSVpv("",0);
4022 sv_catpv(repl, es ? "eval " : "do ");
4023 sv_catpvn(repl, "{ ", 2);
4024 sv_catsv(repl, lex_repl);
4025 sv_catpvn(repl, " };", 2);
4026 SvCOMPILED_on(repl);
4027 SvREFCNT_dec(lex_repl);
4032 yylval.ival = OP_SUBST;
4040 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4041 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
4043 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4044 pm->op_pmflags |= PMf_SCANFIRST;
4045 else if (pm->op_pmflags & PMf_FOLD)
4047 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
4049 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4050 if (pm->op_pmshort &&
4051 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
4053 if (pm->op_pmflags & PMf_SCANFIRST) {
4054 SvREFCNT_dec(pm->op_pmshort);
4055 pm->op_pmshort = Nullsv;
4058 SvREFCNT_dec(pm->op_pmregexp->regmust);
4059 pm->op_pmregexp->regmust = Nullsv;
4063 if (!pm->op_pmshort || /* promote the better string */
4064 ((pm->op_pmflags & PMf_SCANFIRST) &&
4065 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)) )){
4066 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
4067 pm->op_pmshort = pm->op_pmregexp->regmust;
4068 pm->op_pmregexp->regmust = Nullsv;
4069 pm->op_pmflags |= PMf_SCANFIRST;
4085 yylval.ival = OP_NULL;
4087 s = scan_str(start);
4090 SvREFCNT_dec(lex_stuff);
4092 croak("Translation pattern not terminated");
4094 if (s[-1] == multi_open)
4100 SvREFCNT_dec(lex_stuff);
4103 SvREFCNT_dec(lex_repl);
4105 croak("Translation replacement not terminated");
4108 New(803,tbl,256,short);
4109 op = newPVOP(OP_TRANS, 0, (char*)tbl);
4111 complement = delete = squash = 0;
4112 while (*s == 'c' || *s == 'd' || *s == 's') {
4114 complement = OPpTRANS_COMPLEMENT;
4116 delete = OPpTRANS_DELETE;
4118 squash = OPpTRANS_SQUASH;
4121 op->op_private = delete|squash|complement;
4124 yylval.ival = OP_TRANS;
4133 I32 op_type = OP_SCALAR;
4143 if (*s && strchr("`'\"",*s)) {
4145 s = cpytill(d,s,bufend,term,&len);
4157 } /* assuming tokenbuf won't clobber */
4162 if (rsfp || !(d=ninstr(s,bufend,d,d+1)))
4163 herewas = newSVpv(s,bufend-s);
4165 s--, herewas = newSVpv(s,d-s);
4166 s += SvCUR(herewas);
4170 op_type = OP_BACKTICK;
4173 multi_start = curcop->cop_line;
4174 multi_open = multi_close = '<';
4175 tmpstr = NEWSV(87,80);
4176 sv_upgrade(tmpstr, SVt_PVIV);
4177 SvIVX(tmpstr) = '\\';
4181 while (s < bufend &&
4182 (*s != term || bcmp(s,tokenbuf,len) != 0) ) {
4187 curcop->cop_line = multi_start;
4188 missingterm(tokenbuf);
4190 sv_setpvn(tmpstr,d+1,s-d);
4192 sv_catpvn(herewas,s,bufend-s);
4193 sv_setsv(linestr,herewas);
4194 oldoldbufptr = oldbufptr = bufptr = s = SvPVX(linestr);
4195 bufend = SvPVX(linestr) + SvCUR(linestr);
4198 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4199 while (s >= bufend) { /* multiple line string? */
4201 !(oldoldbufptr = oldbufptr = s = sv_gets(linestr, rsfp, 0))) {
4202 curcop->cop_line = multi_start;
4203 missingterm(tokenbuf);
4206 if (perldb && curstash != debstash) {
4207 SV *sv = NEWSV(88,0);
4209 sv_upgrade(sv, SVt_PVMG);
4210 sv_setsv(sv,linestr);
4211 av_store(GvAV(curcop->cop_filegv),
4212 (I32)curcop->cop_line,sv);
4214 bufend = SvPVX(linestr) + SvCUR(linestr);
4215 if (*s == term && bcmp(s,tokenbuf,len) == 0) {
4218 sv_catsv(linestr,herewas);
4219 bufend = SvPVX(linestr) + SvCUR(linestr);
4223 sv_catsv(tmpstr,linestr);
4226 multi_end = curcop->cop_line;
4228 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4229 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
4230 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
4232 SvREFCNT_dec(herewas);
4234 yylval.ival = op_type;
4239 scan_inputsymbol(start)
4242 register char *s = start;
4247 s = cpytill(d, s+1, bufend, '>', &len);
4251 croak("Unterminated <> operator");
4254 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
4256 if (d - tokenbuf != len) {
4257 yylval.ival = OP_GLOB;
4259 s = scan_str(start);
4261 croak("Glob not terminated");
4267 (void)strcpy(d,"ARGV");
4270 if (tmp = pad_findmy(d)) {
4271 OP *op = newOP(OP_PADSV, 0);
4273 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4276 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4277 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4278 newUNOP(OP_RV2GV, 0,
4279 newUNOP(OP_RV2SV, 0,
4280 newGVOP(OP_GV, 0, gv))));
4282 yylval.ival = OP_NULL;
4285 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
4286 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4287 yylval.ival = OP_NULL;
4299 register char *s = start;
4308 multi_start = curcop->cop_line;
4310 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
4315 sv_upgrade(sv, SVt_PVIV);
4317 (void)SvPOK_only(sv); /* validate pointer */
4320 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
4321 to = SvPVX(sv)+SvCUR(sv);
4322 if (multi_open == multi_close) {
4323 for (; s < bufend; s++,to++) {
4324 if (*s == '\n' && !rsfp)
4326 if (*s == '\\' && s+1 < bufend && term != '\\') {
4332 else if (*s == term)
4338 for (; s < bufend; s++,to++) {
4339 if (*s == '\n' && !rsfp)
4341 if (*s == '\\' && s+1 < bufend && term != '\\') {
4347 else if (*s == term && --brackets <= 0)
4349 else if (*s == multi_open)
4355 SvCUR_set(sv, to - SvPVX(sv));
4357 if (s < bufend) break; /* string ends on this line? */
4360 !(oldoldbufptr = oldbufptr = s = sv_gets(linestr, rsfp, 0))) {
4361 curcop->cop_line = multi_start;
4365 if (perldb && curstash != debstash) {
4366 SV *sv = NEWSV(88,0);
4368 sv_upgrade(sv, SVt_PVMG);
4369 sv_setsv(sv,linestr);
4370 av_store(GvAV(curcop->cop_filegv),
4371 (I32)curcop->cop_line, sv);
4373 bufend = SvPVX(linestr) + SvCUR(linestr);
4375 multi_end = curcop->cop_line;
4377 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4378 SvLEN_set(sv, SvCUR(sv) + 1);
4379 Renew(SvPVX(sv), SvLEN(sv), char);
4392 register char *s = start;
4402 croak("panic: scan_num");
4412 else if (s[1] == '.')
4426 yyerror("Illegal octal digit");
4428 case '0': case '1': case '2': case '3': case '4':
4429 case '5': case '6': case '7':
4433 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4434 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4438 i += (*s++ & 7) + 9;
4445 if (tryi32 == i && tryi32 >= 0)
4446 sv_setiv(sv,tryi32);
4448 sv_setnv(sv,(double)i);
4451 case '1': case '2': case '3': case '4': case '5':
4452 case '6': case '7': case '8': case '9': case '.':
4456 while (isDIGIT(*s) || *s == '_') {
4458 if (dowarn && lastub && s - lastub != 3)
4459 warn("Misplaced _ in number");
4465 if (dowarn && lastub && s - lastub != 3)
4466 warn("Misplaced _ in number");
4467 if (*s == '.' && s[1] != '.') {
4470 while (isDIGIT(*s) || *s == '_') {
4477 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
4480 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
4481 if (*s == '+' || *s == '-')
4488 value = atof(tokenbuf);
4489 tryi32 = I_32(value);
4490 if (!floatit && (double)tryi32 == value)
4491 sv_setiv(sv,tryi32);
4497 yylval.opval = newSVOP(OP_CONST, 0, sv);
4508 SV *stuff = newSVpv("",0);
4509 bool needargs = FALSE;
4512 if (*s == '.' || *s == '}') {
4514 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
4518 if (in_eval && !rsfp) {
4519 eol = strchr(s,'\n');
4524 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
4526 for (t = s; t < eol; t++) {
4527 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
4529 goto enough; /* ~~ must be first line in formline */
4531 if (*t == '@' || *t == '^')
4534 sv_catpvn(stuff, s, eol-s);
4538 s = sv_gets(linestr, rsfp, 0);
4539 oldoldbufptr = oldbufptr = bufptr = SvPVX(linestr);
4540 bufend = bufptr + SvCUR(linestr);
4543 yyerror("Format not terminated");
4553 lex_state = LEX_NORMAL;
4554 nextval[nexttoke].ival = 0;
4558 lex_state = LEX_FORMLINE;
4559 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
4561 nextval[nexttoke].ival = OP_FORMLINE;
4565 SvREFCNT_dec(stuff);
4577 cshlen = strlen(cshname);
4584 int oldsavestack_ix = savestack_ix;
4591 SAVESPTR(comppad_name);
4592 SAVEINT(comppad_name_fill);
4593 SAVEINT(min_intro_pending);
4594 SAVEINT(max_intro_pending);
4596 SAVEFREESV((SV*)comppad);
4597 comppad_name = newAV();
4598 SAVEFREESV((SV*)comppad_name);
4599 comppad_name_fill = 0;
4600 min_intro_pending = 0;
4601 av_push(comppad, Nullsv);
4602 curpad = AvARRAY(comppad);
4605 subline = curcop->cop_line;
4606 return oldsavestack_ix;
4622 char *tname = tmpbuf;
4624 if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
4625 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
4626 while (isSPACE(*oldoldbufptr))
4628 sprintf(tname,"near \"%.*s\"",bufptr - oldoldbufptr, oldoldbufptr);
4630 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
4631 oldbufptr != bufptr) {
4632 while (isSPACE(*oldbufptr))
4634 sprintf(tname,"near \"%.*s\"",bufptr - oldbufptr, oldbufptr);
4636 else if (yychar > 255)
4637 tname = "next token ???";
4638 else if (!yychar || (yychar == ';' && !rsfp))
4639 (void)strcpy(tname,"at EOF");
4640 else if ((yychar & 127) == 127) {
4641 if (lex_state == LEX_NORMAL ||
4642 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
4643 (void)strcpy(tname,"at end of line");
4645 (void)strcpy(tname,"within string");
4647 else if (yychar < 32)
4648 (void)sprintf(tname,"next char ^%c",yychar+64);
4650 (void)sprintf(tname,"next char %c",yychar);
4651 (void)sprintf(buf, "%s at %s line %d, %s\n",
4652 s,SvPVX(GvSV(curcop->cop_filegv)),curcop->cop_line,tname);
4653 if (curcop->cop_line == multi_end && multi_start < multi_end) {
4654 sprintf(buf+strlen(buf),
4655 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
4656 multi_open,multi_close,(long)multi_start);
4660 sv_catpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),buf);
4663 if (++error_count >= 10)
4664 croak("%s has too many errors.\n",
4665 SvPVX(GvSV(curcop->cop_filegv)));