This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
https://perl5.git.perl.org / perl5.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Change pp_tie and pp_dbmopen to use perl_call_sv instead of a
[perl5.git] / toke.c
CommitLineData
a0d0e21e 1/* toke.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, Larry Wall
a687059c 4 *
d48672a2
LW		 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.
378cc40b 7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "It all comes from here, the stench and the peril." --Frodo
378cc40b
LW		 12 */
13
14#include "EXTERN.h"
15#include "perl.h"
378cc40b 16
a0d0e21e
LW		 17static void check_uni _((void));
18static void force_next _((I32 type));
89bfa8cd 19static char *force_version _((char *start));
a0d0e21e
LW		 20static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21static SV *q _((SV *sv));
22static char *scan_const _((char *start));
23static char *scan_formline _((char *s));
24static char *scan_heredoc _((char *s));
8903cb82 25static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen,
26 I32 ck_uni));
a0d0e21e
LW		 27static char *scan_inputsymbol _((char *start));
28static char *scan_pat _((char *start));
29static char *scan_str _((char *start));
30static char *scan_subst _((char *start));
31static char *scan_trans _((char *start));
8903cb82 32static char *scan_word _((char *s, char *dest, STRLEN destlen,
33 int allow_package, STRLEN *slp));
a0d0e21e
LW		 34static char *skipspace _((char *s));
35static void checkcomma _((char *s, char *name, char *what));
36static void force_ident _((char *s, int kind));
37static void incline _((char *s));
38static int intuit_method _((char *s, GV *gv));
39static int intuit_more _((char *s));
40static I32 lop _((I32 f, expectation x, char *s));
41static void missingterm _((char *s));
42static void no_op _((char *what, char *s));
43static void set_csh _((void));
44static I32 sublex_done _((void));
55497cff 45static I32 sublex_push _((void));
a0d0e21e
LW		 46static I32 sublex_start _((void));
47#ifdef CRIPPLED_CC
48static int uni _((I32 f, char *s));
49#endif
fd049845 50static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
6d5fb7e3 51static void restore_rsfp _((void *f));
2f3197b3 52
fc36a67e 53static char ident_too_long[] = "Identifier too long";
8903cb82 54
fd049845 55static char *linestart; /* beg. of most recently read line */
56
bbce6d69 57static char pending_ident; /* pending identifier lookup */
58
55497cff 59static struct {
60 I32 super_state; /* lexer state to save */
61 I32 sub_inwhat; /* "lex_inwhat" to use */
62 OP *sub_op; /* "lex_op" to use */
63} sublex_info;
64
79072805
LW		 65/* The following are arranged oddly so that the guard on the switch statement
66 * can get by with a single comparison (if the compiler is smart enough).
67 */
68
fb73857a 69/* #define LEX_NOTPARSING 11 is done in perl.h. */
70
55497cff 71#define LEX_NORMAL 10
72#define LEX_INTERPNORMAL 9
73#define LEX_INTERPCASEMOD 8
74#define LEX_INTERPPUSH 7
75#define LEX_INTERPSTART 6
76#define LEX_INTERPEND 5
77#define LEX_INTERPENDMAYBE 4
78#define LEX_INTERPCONCAT 3
79#define LEX_INTERPCONST 2
80#define LEX_FORMLINE 1
81#define LEX_KNOWNEXT 0
79072805 82
395c3793
LW		 83#ifdef I_FCNTL
84#include <fcntl.h>
85#endif
fe14fcc3
LW		 86#ifdef I_SYS_FILE
87#include <sys/file.h>
88#endif
395c3793 89
a790bc05 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
91#ifdef I_UNISTD
92# include <unistd.h> /* Needed for execv() */
93#endif
94
95
79072805
LW		 96#ifdef ff_next
97#undef ff_next
d48672a2
LW		 98#endif
99
79072805 100#include "keywords.h"
fe14fcc3 101
ae986130
LW		 102#ifdef CLINE
103#undef CLINE
104#endif
79072805 105#define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
378cc40b 106
79072805
LW		 107#define TOKEN(retval) return (bufptr = s,(int)retval)
108#define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
a0d0e21e 109#define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
79072805 110#define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
a0d0e21e 111#define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
79072805
LW		 112#define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
113#define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
463ee0b2 114#define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
79072805
LW		 115#define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
116#define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
117#define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
a0d0e21e
LW		 118#define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
119#define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
120#define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
121#define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
79072805 122#define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
a0d0e21e
LW		 123#define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
124#define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
79072805
LW		 125#define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
126#define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
2f3197b3 127
a687059c
LW		 128/* This bit of chicanery makes a unary function followed by
129 * a parenthesis into a function with one argument, highest precedence.
130 */
2f3197b3 131#define UNI(f) return(yylval.ival = f, \
79072805 132 expect = XTERM, \
2f3197b3
LW		 133 bufptr = s, \
134 last_uni = oldbufptr, \
a0d0e21e 135 last_lop_op = f, \
a687059c
LW		 136 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
137
79072805
LW		 138#define UNIBRACK(f) return(yylval.ival = f, \
139 bufptr = s, \
140 last_uni = oldbufptr, \
141 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
142
9f68db38 143/* grandfather return to old style */
79072805
LW		 144#define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
145
a0d0e21e
LW		 146static int
147ao(toketype)
148int toketype;
149{
150 if (*bufptr == '=') {
151 bufptr++;
152 if (toketype == ANDAND)
153 yylval.ival = OP_ANDASSIGN;
154 else if (toketype == OROR)
155 yylval.ival = OP_ORASSIGN;
156 toketype = ASSIGNOP;
157 }
158 return toketype;
159}
160
8990e307
LW		 161static void
162no_op(what, s)
463ee0b2 163char *what;
8990e307 164char *s;
463ee0b2 165{
748a9306 166 char *oldbp = bufptr;
fd049845 167 bool is_first = (oldbufptr == linestart);
68dc0745 168
8990e307 169 bufptr = s;
46fc3d4c 170 yywarn(form("%s found where operator expected", what));
748a9306 171 if (is_first)
a0d0e21e 172 warn("\t(Missing semicolon on previous line?)\n");
748a9306
LW		 173 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
174 char *t;
175 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
176 if (t < bufptr && isSPACE(*t))
177 warn("\t(Do you need to predeclare %.*s?)\n",
178 t - oldoldbufptr, oldoldbufptr);
179
180 }
181 else
182 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
183 bufptr = oldbp;
8990e307
LW		 184}
185
186static void
187missingterm(s)
188char *s;
189{
190 char tmpbuf[3];
191 char q;
192 if (s) {
193 char *nl = strrchr(s,'\n');
194 if (nl)
195 *nl = '\0';
196 }
197 else if (multi_close < 32 || multi_close == 127) {
198 *tmpbuf = '^';
bbce6d69 199 tmpbuf[1] = toCTRL(multi_close);
8990e307
LW		 200 s = "\\n";
201 tmpbuf[2] = '\0';
202 s = tmpbuf;
203 }
204 else {
205 *tmpbuf = multi_close;
206 tmpbuf[1] = '\0';
207 s = tmpbuf;
208 }
209 q = strchr(s,'"') ? '\'' : '"';
210 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
463ee0b2 211}
79072805
LW		 212
213void
a0d0e21e
LW		 214deprecate(s)
215char *s;
216{
217 if (dowarn)
218 warn("Use of %s is deprecated", s);
219}
220
221static void
222depcom()
223{
224 deprecate("comma-less variable list");
225}
226
227void
8990e307
LW		 228lex_start(line)
229SV *line;
79072805 230{
0f15f207 231 dTHR;
8990e307
LW		 232 char *s;
233 STRLEN len;
234
55497cff 235 SAVEI32(lex_dojoin);
236 SAVEI32(lex_brackets);
237 SAVEI32(lex_fakebrack);
238 SAVEI32(lex_casemods);
239 SAVEI32(lex_starts);
240 SAVEI32(lex_state);
a0d0e21e 241 SAVESPTR(lex_inpat);
55497cff 242 SAVEI32(lex_inwhat);
243 SAVEI16(curcop->cop_line);
85e6fe83
LW		 244 SAVEPPTR(bufptr);
245 SAVEPPTR(bufend);
246 SAVEPPTR(oldbufptr);
247 SAVEPPTR(oldoldbufptr);
fd049845 248 SAVEPPTR(linestart);
463ee0b2 249 SAVESPTR(linestr);
85e6fe83 250 SAVEPPTR(lex_brackstack);
a0d0e21e 251 SAVEPPTR(lex_casestack);
6d5fb7e3 252 SAVEDESTRUCTOR(restore_rsfp, rsfp);
463ee0b2 253
79072805
LW		 254 lex_state = LEX_NORMAL;
255 lex_defer = 0;
8990e307 256 expect = XSTATE;
79072805
LW		 257 lex_brackets = 0;
258 lex_fakebrack = 0;
8990e307 259 New(899, lex_brackstack, 120, char);
a0d0e21e 260 New(899, lex_casestack, 12, char);
8990e307 261 SAVEFREEPV(lex_brackstack);
a0d0e21e 262 SAVEFREEPV(lex_casestack);
79072805 263 lex_casemods = 0;
a0d0e21e 264 *lex_casestack = '\0';
79072805
LW		 265 lex_dojoin = 0;
266 lex_starts = 0;
267 if (lex_stuff)
8990e307 268 SvREFCNT_dec(lex_stuff);
79072805
LW		 269 lex_stuff = Nullsv;
270 if (lex_repl)
8990e307 271 SvREFCNT_dec(lex_repl);
79072805
LW		 272 lex_repl = Nullsv;
273 lex_inpat = 0;
274 lex_inwhat = 0;
8990e307
LW		 275 linestr = line;
276 if (SvREADONLY(linestr))
277 linestr = sv_2mortal(newSVsv(linestr));
278 s = SvPV(linestr, len);
279 if (len && s[len-1] != ';') {
a0d0e21e 280 if (!(SvFLAGS(linestr) & SVs_TEMP))
8990e307
LW		 281 linestr = sv_2mortal(newSVsv(linestr));
282 sv_catpvn(linestr, "\n;", 2);
283 }
284 SvTEMP_off(linestr);
fd049845 285 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
79072805 286 bufend = bufptr + SvCUR(linestr);
c07a80fd 287 SvREFCNT_dec(rs);
288 rs = newSVpv("\n", 1);
8990e307 289 rsfp = 0;
79072805 290}
a687059c 291
463ee0b2
LW		 292void
293lex_end()
294{
6ca21dd3 295 doextract = FALSE;
463ee0b2
LW		 296}
297
298static void
6d5fb7e3
CS		 299restore_rsfp(f)
300void *f;
301{
760ac839 302 PerlIO *fp = (PerlIO*)f;
6d5fb7e3 303
760ac839
LW		 304 if (rsfp == PerlIO_stdin())
305 PerlIO_clearerr(rsfp);
a5f75d66 306 else if (rsfp && (rsfp != fp))
760ac839 307 PerlIO_close(rsfp);
6d5fb7e3
CS		 308 rsfp = fp;
309}
310
311static void
463ee0b2
LW		 312incline(s)
313char *s;
314{
0f15f207 315 dTHR;
463ee0b2
LW		 316 char *t;
317 char *n;
318 char ch;
319 int sawline = 0;
320
321 curcop->cop_line++;
322 if (*s++ != '#')
323 return;
324 while (*s == ' ' || *s == '\t') s++;
325 if (strnEQ(s, "line ", 5)) {
326 s += 5;
327 sawline = 1;
328 }
329 if (!isDIGIT(*s))
330 return;
331 n = s;
332 while (isDIGIT(*s))
333 s++;
334 while (*s == ' ' || *s == '\t')
335 s++;
336 if (*s == '"' && (t = strchr(s+1, '"')))
337 s++;
338 else {
339 if (!sawline)
340 return; /* false alarm */
341 for (t = s; !isSPACE(*t); t++) ;
342 }
343 ch = *t;
344 *t = '\0';
345 if (t - s > 0)
346 curcop->cop_filegv = gv_fetchfile(s);
347 else
348 curcop->cop_filegv = gv_fetchfile(origfilename);
349 *t = ch;
350 curcop->cop_line = atoi(n)-1;
351}
352
8990e307 353static char *
a687059c
LW		 354skipspace(s)
355register char *s;
356{
11343788 357 dTHR;
85e6fe83 358 if (lex_formbrack && lex_brackets <= lex_formbrack) {
463ee0b2
LW		 359 while (s < bufend && (*s == ' ' || *s == '\t'))
360 s++;
361 return s;
362 }
363 for (;;) {
fd049845 364 STRLEN prevlen;
463ee0b2
LW		 365 while (s < bufend && isSPACE(*s))
366 s++;
367 if (s < bufend && *s == '#') {
368 while (s < bufend && *s != '\n')
369 s++;
370 if (s < bufend)
371 s++;
372 }
a0d0e21e 373 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
463ee0b2 374 return s;
fd049845 375 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
a0d0e21e 376 if (minus_n || minus_p) {
08e9d68e
DD		 377 sv_setpv(linestr,minus_p ?
378 ";}continue{print or die qq(-p destination: $!\\n)" :
379 "");
a0d0e21e
LW		 380 sv_catpv(linestr,";}");
381 minus_n = minus_p = 0;
382 }
383 else
384 sv_setpv(linestr,";");
fd049845 385 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 386 bufend = SvPVX(linestr) + SvCUR(linestr);
387 if (preprocess && !in_eval)
8990e307 388 (void)my_pclose(rsfp);
760ac839
LW		 389 else if ((PerlIO*)rsfp == PerlIO_stdin())
390 PerlIO_clearerr(rsfp);
8990e307 391 else
760ac839 392 (void)PerlIO_close(rsfp);
90248788
TB		 393 if (e_fp == rsfp)
394 e_fp = Nullfp;
8990e307 395 rsfp = Nullfp;
463ee0b2
LW		 396 return s;
397 }
fd049845 398 linestart = bufptr = s + prevlen;
399 bufend = s + SvCUR(linestr);
400 s = bufptr;
a0d0e21e 401 incline(s);
84902520 402 if (PERLDB_LINE && curstash != debstash) {
8990e307
LW		 403 SV *sv = NEWSV(85,0);
404
405 sv_upgrade(sv, SVt_PVMG);
fd049845 406 sv_setpvn(sv,bufptr,bufend-bufptr);
8990e307
LW		 407 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
408 }
463ee0b2 409 }
a687059c 410}
378cc40b 411
8990e307 412static void
2f3197b3
LW		 413check_uni() {
414 char *s;
415 char ch;
a0d0e21e 416 char *t;
2f3197b3
LW		 417
418 if (oldoldbufptr != last_uni)
419 return;
420 while (isSPACE(*last_uni))
421 last_uni++;
e334a159 422 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
a0d0e21e
LW		 423 if ((t = strchr(s, '(')) && t < bufptr)
424 return;
2f3197b3
LW		 425 ch = *s;
426 *s = '\0';
427 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
428 *s = ch;
429}
430
ffed7fef
LW		 431#ifdef CRIPPLED_CC
432
433#undef UNI
ffed7fef 434#define UNI(f) return uni(f,s)
ffed7fef 435
8990e307 436static int
ffed7fef 437uni(f,s)
79072805 438I32 f;
ffed7fef
LW		 439char *s;
440{
441 yylval.ival = f;
79072805 442 expect = XTERM;
ffed7fef 443 bufptr = s;
2f3197b3 444 last_uni = oldbufptr;
a0d0e21e 445 last_lop_op = f;
ffed7fef
LW		 446 if (*s == '(')
447 return FUNC1;
448 s = skipspace(s);
449 if (*s == '(')
450 return FUNC1;
451 else
452 return UNIOP;
453}
454
a0d0e21e
LW		 455#endif /* CRIPPLED_CC */
456
457#define LOP(f,x) return lop(f,x,s)
458
8990e307 459static I32
f86702cc 460lop
461#ifdef CAN_PROTOTYPE
462 (I32 f, expectation x, char *s)
463#else
464 (f,x,s)
79072805 465I32 f;
a0d0e21e 466expectation x;
ffed7fef 467char *s;
f86702cc 468#endif /* CAN_PROTOTYPE */
ffed7fef 469{
0f15f207 470 dTHR;
79072805 471 yylval.ival = f;
35c8bce7 472 CLINE;
a0d0e21e 473 expect = x;
79072805 474 bufptr = s;
8990e307
LW		 475 last_lop = oldbufptr;
476 last_lop_op = f;
a0d0e21e
LW		 477 if (nexttoke)
478 return LSTOP;
79072805
LW		 479 if (*s == '(')
480 return FUNC;
481 s = skipspace(s);
482 if (*s == '(')
483 return FUNC;
484 else
485 return LSTOP;
486}
487
8990e307 488static void
79072805
LW		 489force_next(type)
490I32 type;
491{
492 nexttype[nexttoke] = type;
493 nexttoke++;
494 if (lex_state != LEX_KNOWNEXT) {
495 lex_defer = lex_state;
463ee0b2 496 lex_expect = expect;
79072805
LW		 497 lex_state = LEX_KNOWNEXT;
498 }
499}
500
8990e307 501static char *
a0d0e21e 502force_word(start,token,check_keyword,allow_pack,allow_tick)
463ee0b2 503register char *start;
79072805 504int token;
463ee0b2 505int check_keyword;
a0d0e21e 506int allow_pack;
463ee0b2 507int allow_tick;
79072805 508{
463ee0b2
LW		 509 register char *s;
510 STRLEN len;
511
512 start = skipspace(start);
513 s = start;
a0d0e21e
LW		 514 if (isIDFIRST(*s) ||
515 (allow_pack && *s == ':') ||
516 (allow_tick && *s == '\'') )
517 {
8903cb82 518 s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len);
463ee0b2
LW		 519 if (check_keyword && keyword(tokenbuf, len))
520 return start;
521 if (token == METHOD) {
522 s = skipspace(s);
523 if (*s == '(')
524 expect = XTERM;
525 else {
526 expect = XOPERATOR;
527 force_next(')');
528 force_next('(');
529 }
79072805 530 }
463ee0b2 531 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
8990e307 532 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
79072805
LW		 533 force_next(token);
534 }
535 return s;
536}
537
8990e307 538static void
a0d0e21e 539force_ident(s, kind)
79072805 540register char *s;
a0d0e21e 541int kind;
79072805
LW		 542{
543 if (s && *s) {
11343788
MB		 544 OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
545 nextval[nexttoke].opval = o;
79072805 546 force_next(WORD);
748a9306 547 if (kind) {
e858de61 548 dTHR; /* just for in_eval */
11343788 549 o->op_private = OPpCONST_ENTERED;
55497cff 550 /* XXX see note in pp_entereval() for why we forgo typo
551 warnings if the symbol must be introduced in an eval.
552 GSAR 96-10-12 */
553 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
a0d0e21e
LW		 554 kind == '$' ? SVt_PV :
555 kind == '@' ? SVt_PVAV :
556 kind == '%' ? SVt_PVHV :
557 SVt_PVGV
558 );
748a9306 559 }
79072805
LW		 560 }
561}
562
89bfa8cd 563static char *
564force_version(s)
565char *s;
566{
567 OP *version = Nullop;
568
569 s = skipspace(s);
570
571 /* default VERSION number -- GBARR */
572
573 if(isDIGIT(*s)) {
574 char *d;
575 int c;
55497cff 576 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
89bfa8cd 577 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
578 s = scan_num(s);
579 /* real VERSION number -- GBARR */
580 version = yylval.opval;
581 }
582 }
583
584 /* NOTE: The parser sees the package name and the VERSION swapped */
585 nextval[nexttoke].opval = version;
586 force_next(WORD);
587
588 return (s);
589}
590
8990e307 591static SV *
79072805
LW		 592q(sv)
593SV *sv;
594{
595 register char *s;
596 register char *send;
597 register char *d;
463ee0b2 598 STRLEN len;
79072805
LW		 599
600 if (!SvLEN(sv))
601 return sv;
602
a0d0e21e 603 s = SvPV_force(sv, len);
748a9306
LW		 604 if (SvIVX(sv) == -1)
605 return sv;
463ee0b2 606 send = s + len;
79072805
LW		 607 while (s < send && *s != '\\')
608 s++;
609 if (s == send)
610 return sv;
611 d = s;
79072805
LW		 612 while (s < send) {
613 if (*s == '\\') {
a0d0e21e 614 if (s + 1 < send && (s[1] == '\\'))
79072805
LW		 615 s++; /* all that, just for this */
616 }
617 *d++ = *s++;
618 }
619 *d = '\0';
463ee0b2 620 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 621
622 return sv;
623}
624
8990e307 625static I32
79072805
LW		 626sublex_start()
627{
628 register I32 op_type = yylval.ival;
79072805
LW		 629
630 if (op_type == OP_NULL) {
631 yylval.opval = lex_op;
632 lex_op = Nullop;
633 return THING;
634 }
635 if (op_type == OP_CONST || op_type == OP_READLINE) {
1c9c84df
CS		 636 SV *sv = q(lex_stuff);
637 STRLEN len;
638 char *p = SvPV(sv, len);
639 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
640 SvREFCNT_dec(sv);
79072805
LW		 641 lex_stuff = Nullsv;
642 return THING;
643 }
644
55497cff 645 sublex_info.super_state = lex_state;
646 sublex_info.sub_inwhat = op_type;
647 sublex_info.sub_op = lex_op;
648 lex_state = LEX_INTERPPUSH;
649
650 expect = XTERM;
651 if (lex_op) {
652 yylval.opval = lex_op;
653 lex_op = Nullop;
654 return PMFUNC;
655 }
656 else
657 return FUNC;
658}
659
660static I32
661sublex_push()
662{
0f15f207 663 dTHR;
79072805 664 push_scope();
55497cff 665
666 lex_state = sublex_info.super_state;
667 SAVEI32(lex_dojoin);
668 SAVEI32(lex_brackets);
669 SAVEI32(lex_fakebrack);
670 SAVEI32(lex_casemods);
671 SAVEI32(lex_starts);
672 SAVEI32(lex_state);
a0d0e21e 673 SAVESPTR(lex_inpat);
55497cff 674 SAVEI32(lex_inwhat);
675 SAVEI16(curcop->cop_line);
85e6fe83
LW		 676 SAVEPPTR(bufptr);
677 SAVEPPTR(oldbufptr);
678 SAVEPPTR(oldoldbufptr);
fd049845 679 SAVEPPTR(linestart);
79072805 680 SAVESPTR(linestr);
85e6fe83 681 SAVEPPTR(lex_brackstack);
a0d0e21e 682 SAVEPPTR(lex_casestack);
79072805
LW		 683
684 linestr = lex_stuff;
685 lex_stuff = Nullsv;
686
fd049845 687 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 688 bufend += SvCUR(linestr);
8990e307 689 SAVEFREESV(linestr);
79072805
LW		 690
691 lex_dojoin = FALSE;
692 lex_brackets = 0;
693 lex_fakebrack = 0;
8990e307 694 New(899, lex_brackstack, 120, char);
a0d0e21e 695 New(899, lex_casestack, 12, char);
8990e307 696 SAVEFREEPV(lex_brackstack);
a0d0e21e 697 SAVEFREEPV(lex_casestack);
79072805 698 lex_casemods = 0;
a0d0e21e 699 *lex_casestack = '\0';
79072805
LW		 700 lex_starts = 0;
701 lex_state = LEX_INTERPCONCAT;
702 curcop->cop_line = multi_start;
703
55497cff 704 lex_inwhat = sublex_info.sub_inwhat;
705 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
706 lex_inpat = sublex_info.sub_op;
79072805 707 else
55497cff 708 lex_inpat = Nullop;
79072805 709
55497cff 710 return '(';
79072805
LW		 711}
712
8990e307 713static I32
79072805
LW		 714sublex_done()
715{
716 if (!lex_starts++) {
717 expect = XOPERATOR;
93a17b20 718 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 719 return THING;
720 }
721
722 if (lex_casemods) { /* oops, we've got some unbalanced parens */
723 lex_state = LEX_INTERPCASEMOD;
724 return yylex();
725 }
726
79072805
LW		 727 /* Is there a right-hand side to take care of? */
728 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
729 linestr = lex_repl;
730 lex_inpat = 0;
fd049845 731 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 732 bufend += SvCUR(linestr);
8990e307 733 SAVEFREESV(linestr);
79072805
LW		 734 lex_dojoin = FALSE;
735 lex_brackets = 0;
736 lex_fakebrack = 0;
737 lex_casemods = 0;
a0d0e21e 738 *lex_casestack = '\0';
79072805
LW		 739 lex_starts = 0;
740 if (SvCOMPILED(lex_repl)) {
741 lex_state = LEX_INTERPNORMAL;
742 lex_starts++;
743 }
744 else
745 lex_state = LEX_INTERPCONCAT;
746 lex_repl = Nullsv;
747 return ',';
ffed7fef
LW		 748 }
749 else {
79072805 750 pop_scope();
463ee0b2 751 bufend = SvPVX(linestr);
79072805
LW		 752 bufend += SvCUR(linestr);
753 expect = XOPERATOR;
754 return ')';
ffed7fef
LW		 755 }
756}
757
8990e307 758static char *
79072805
LW		 759scan_const(start)
760char *start;
761{
762 register char *send = bufend;
763 SV *sv = NEWSV(93, send - start);
764 register char *s = start;
463ee0b2 765 register char *d = SvPVX(sv);
79072805
LW		 766 bool dorange = FALSE;
767 I32 len;
72aaf631 768 char *leaveit =
79072805 769 lex_inpat
748a9306 770 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 771 : (lex_inwhat & OP_TRANS)
772 ? ""
773 : "";
774
775 while (s < send || dorange) {
776 if (lex_inwhat == OP_TRANS) {
777 if (dorange) {
778 I32 i;
779 I32 max;
463ee0b2 780 i = d - SvPVX(sv);
79072805 781 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 782 d = SvPVX(sv) + i;
79072805 783 d -= 2;
91b7def8 784 max = (U8)d[1];
785 for (i = (U8)*d; i <= max; i++)
79072805
LW		 786 *d++ = i;
787 dorange = FALSE;
788 continue;
789 }
790 else if (*s == '-' && s+1 < send && s != start) {
791 dorange = TRUE;
792 s++;
793 }
794 }
748a9306
LW		 795 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
796 while (s < send && *s != ')')
797 *d++ = *s++;
798 }
799 else if (*s == '#' && lex_inpat &&
800 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
801 while (s+1 < send && *s != '\n')
802 *d++ = *s++;
803 }
a0d0e21e 804 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 805 break;
806 else if (*s == '$') {
807 if (!lex_inpat) /* not a regexp, so $ must be var */
808 break;
a0d0e21e 809 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 810 break; /* in regexp, $ might be tail anchor */
811 }
812 if (*s == '\\' && s+1 < send) {
813 s++;
72aaf631 814 if (*s && strchr(leaveit, *s)) {
79072805
LW		 815 *d++ = '\\';
816 *d++ = *s++;
817 continue;
818 }
819 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 820 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 821 {
a0d0e21e
LW		 822 if (dowarn)
823 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 824 *--s = '$';
825 break;
826 }
a0d0e21e 827 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 828 --s;
829 break;
830 }
831 switch (*s) {
832 case '-':
833 if (lex_inwhat == OP_TRANS) {
834 *d++ = *s++;
835 continue;
836 }
837 /* FALL THROUGH */
838 default:
839 *d++ = *s++;
840 continue;
841 case '0': case '1': case '2': case '3':
842 case '4': case '5': case '6': case '7':
843 *d++ = scan_oct(s, 3, &len);
844 s += len;
845 continue;
846 case 'x':
847 *d++ = scan_hex(++s, 2, &len);
848 s += len;
849 continue;
850 case 'c':
851 s++;
bbce6d69 852 len = *s++;
853 *d++ = toCTRL(len);
79072805
LW		 854 continue;
855 case 'b':
856 *d++ = '\b';
857 break;
858 case 'n':
859 *d++ = '\n';
860 break;
861 case 'r':
862 *d++ = '\r';
863 break;
864 case 'f':
865 *d++ = '\f';
866 break;
867 case 't':
868 *d++ = '\t';
869 break;
870 case 'e':
871 *d++ = '\033';
872 break;
873 case 'a':
874 *d++ = '\007';
875 break;
876 }
877 s++;
878 continue;
879 }
880 *d++ = *s++;
881 }
882 *d = '\0';
463ee0b2 883 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 884 SvPOK_on(sv);
885
886 if (SvCUR(sv) + 5 < SvLEN(sv)) {
887 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 888 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 889 }
890 if (s > bufptr)
891 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
892 else
8990e307 893 SvREFCNT_dec(sv);
79072805
LW		 894 return s;
895}
896
897/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 898static int
79072805
LW		 899intuit_more(s)
900register char *s;
901{
902 if (lex_brackets)
903 return TRUE;
904 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
905 return TRUE;
906 if (*s != '{' && *s != '[')
907 return FALSE;
908 if (!lex_inpat)
909 return TRUE;
910
911 /* In a pattern, so maybe we have {n,m}. */
912 if (*s == '{') {
913 s++;
914 if (!isDIGIT(*s))
915 return TRUE;
916 while (isDIGIT(*s))
917 s++;
918 if (*s == ',')
919 s++;
920 while (isDIGIT(*s))
921 s++;
922 if (*s == '}')
923 return FALSE;
924 return TRUE;
925
926 }
927
928 /* On the other hand, maybe we have a character class */
929
930 s++;
931 if (*s == ']' || *s == '^')
932 return FALSE;
933 else {
934 int weight = 2; /* let's weigh the evidence */
935 char seen[256];
936 unsigned char un_char = 0, last_un_char;
93a17b20 937 char *send = strchr(s,']');
8903cb82 938 char tmpbuf[sizeof tokenbuf * 4];
79072805
LW		 939
940 if (!send) /* has to be an expression */
941 return TRUE;
942
943 Zero(seen,256,char);
944 if (*s == '$')
945 weight -= 3;
946 else if (isDIGIT(*s)) {
947 if (s[1] != ']') {
948 if (isDIGIT(s[1]) && s[2] == ']')
949 weight -= 10;
950 }
951 else
952 weight -= 100;
953 }
954 for (; s < send; s++) {
955 last_un_char = un_char;
956 un_char = (unsigned char)*s;
957 switch (*s) {
958 case '@':
959 case '&':
960 case '$':
961 weight -= seen[un_char] * 10;
962 if (isALNUM(s[1])) {
8903cb82 963 scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE);
a0d0e21e 964 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 965 weight -= 100;
966 else
967 weight -= 10;
968 }
969 else if (*s == '$' && s[1] &&
93a17b20
LW		 970 strchr("[#!%*<>()-=",s[1])) {
971 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 972 weight -= 10;
973 else
974 weight -= 1;
975 }
976 break;
977 case '\\':
978 un_char = 254;
979 if (s[1]) {
93a17b20 980 if (strchr("wds]",s[1]))
79072805
LW		 981 weight += 100;
982 else if (seen['\''] || seen['"'])
983 weight += 1;
93a17b20 984 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 985 weight += 40;
986 else if (isDIGIT(s[1])) {
987 weight += 40;
988 while (s[1] && isDIGIT(s[1]))
989 s++;
990 }
991 }
992 else
993 weight += 100;
994 break;
995 case '-':
996 if (s[1] == '\\')
997 weight += 50;
93a17b20 998 if (strchr("aA01! ",last_un_char))
79072805 999 weight += 30;
93a17b20 1000 if (strchr("zZ79~",s[1]))
79072805
LW		 1001 weight += 30;
1002 break;
1003 default:
93a17b20 1004 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 1005 isALPHA(*s) && s[1] && isALPHA(s[1])) {
1006 char *d = tmpbuf;
1007 while (isALPHA(*s))
1008 *d++ = *s++;
1009 *d = '\0';
1010 if (keyword(tmpbuf, d - tmpbuf))
1011 weight -= 150;
1012 }
1013 if (un_char == last_un_char + 1)
1014 weight += 5;
1015 weight -= seen[un_char];
1016 break;
1017 }
1018 seen[un_char]++;
1019 }
1020 if (weight >= 0) /* probably a character class */
1021 return FALSE;
1022 }
1023
1024 return TRUE;
1025}
ffed7fef 1026
a0d0e21e
LW		 1027static int
1028intuit_method(start,gv)
1029char *start;
1030GV *gv;
1031{
1032 char *s = start + (*start == '$');
8903cb82 1033 char tmpbuf[sizeof tokenbuf];
a0d0e21e
LW		 1034 STRLEN len;
1035 GV* indirgv;
1036
1037 if (gv) {
1038 if (GvIO(gv))
1039 return 0;
8ebc5c01 1040 if (!GvCVu(gv))
a0d0e21e
LW		 1041 gv = 0;
1042 }
8903cb82 1043 s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
a0d0e21e
LW		 1044 if (*start == '$') {
1045 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1046 return 0;
1047 s = skipspace(s);
1048 bufptr = start;
1049 expect = XREF;
1050 return *s == '(' ? FUNCMETH : METHOD;
1051 }
1052 if (!keyword(tmpbuf, len)) {
1053 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
8ebc5c01 1054 if (indirgv && GvCVu(indirgv))
a0d0e21e
LW		 1055 return 0;
1056 /* filehandle or package name makes it a method */
89bfa8cd 1057 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1058 s = skipspace(s);
55497cff 1059 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1060 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1061 nextval[nexttoke].opval =
1062 (OP*)newSVOP(OP_CONST, 0,
1063 newSVpv(tmpbuf,0));
1064 nextval[nexttoke].opval->op_private =
1065 OPpCONST_BARE;
1066 expect = XTERM;
1067 force_next(WORD);
1068 bufptr = s;
1069 return *s == '(' ? FUNCMETH : METHOD;
1070 }
1071 }
1072 return 0;
1073}
1074
1075static char*
1076incl_perldb()
1077{
1078 if (perldb) {
1079 char *pdb = getenv("PERL5DB");
1080
1081 if (pdb)
1082 return pdb;
1083 return "BEGIN { require 'perl5db.pl' }";
1084 }
1085 return "";
1086}
1087
1088
16d20bd9
AD		 1089/* Encoded script support. filter_add() effectively inserts a
1090 * 'pre-processing' function into the current source input stream.
1091 * Note that the filter function only applies to the current source file
1092 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1093 *
1094 * The datasv parameter (which may be NULL) can be used to pass
1095 * private data to this instance of the filter. The filter function
1096 * can recover the SV using the FILTER_DATA macro and use it to
1097 * store private buffers and state information.
1098 *
1099 * The supplied datasv parameter is upgraded to a PVIO type
1100 * and the IoDIRP field is used to store the function pointer.
1101 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1102 * private use must be set using malloc'd pointers.
1103 */
1104static int filter_debug = 0;
1105
1106SV *
1107filter_add(funcp, datasv)
1108 filter_t funcp;
1109 SV *datasv;
1110{
1111 if (!funcp){ /* temporary handy debugging hack to be deleted */
1112 filter_debug = atoi((char*)datasv);
1113 return NULL;
1114 }
1115 if (!rsfp_filters)
1116 rsfp_filters = newAV();
1117 if (!datasv)
1118 datasv = newSV(0);
1119 if (!SvUPGRADE(datasv, SVt_PVIO))
1120 die("Can't upgrade filter_add data to SVt_PVIO");
1121 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1122 if (filter_debug)
ff0cee69 1123 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1124 av_unshift(rsfp_filters, 1);
1125 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1126 return(datasv);
1127}
1128
1129
1130/* Delete most recently added instance of this filter function. */
a0d0e21e 1131void
16d20bd9
AD		 1132filter_del(funcp)
1133 filter_t funcp;
1134{
1135 if (filter_debug)
ff0cee69 1136 warn("filter_del func %p", funcp);
16d20bd9
AD		 1137 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1138 return;
1139 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1140 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1141 /* sv_free(av_pop(rsfp_filters)); */
1142 sv_free(av_shift(rsfp_filters));
1143
16d20bd9
AD		 1144 return;
1145 }
1146 /* we need to search for the correct entry and clear it */
1147 die("filter_del can only delete in reverse order (currently)");
1148}
1149
1150
1151/* Invoke the n'th filter function for the current rsfp. */
1152I32
1153filter_read(idx, buf_sv, maxlen)
1154 int idx;
1155 SV *buf_sv;
1156 int maxlen; /* 0 = read one text line */
a0d0e21e 1157{
16d20bd9
AD		 1158 filter_t funcp;
1159 SV *datasv = NULL;
e50aee73 1160
16d20bd9
AD		 1161 if (!rsfp_filters)
1162 return -1;
1163 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1164 /* Provide a default input filter to make life easy. */
1165 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1166 if (filter_debug)
1167 warn("filter_read %d: from rsfp\n", idx);
1168 if (maxlen) {
1169 /* Want a block */
1170 int len ;
1171 int old_len = SvCUR(buf_sv) ;
1172
1173 /* ensure buf_sv is large enough */
1174 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1175 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1176 if (PerlIO_error(rsfp))
37120919
AD		 1177 return -1; /* error */
1178 else
1179 return 0 ; /* end of file */
1180 }
16d20bd9
AD		 1181 SvCUR_set(buf_sv, old_len + len) ;
1182 } else {
1183 /* Want a line */
37120919 1184 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1185 if (PerlIO_error(rsfp))
37120919
AD		 1186 return -1; /* error */
1187 else
1188 return 0 ; /* end of file */
1189 }
16d20bd9
AD		 1190 }
1191 return SvCUR(buf_sv);
1192 }
1193 /* Skip this filter slot if filter has been deleted */
1194 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1195 if (filter_debug)
1196 warn("filter_read %d: skipped (filter deleted)\n", idx);
1197 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1198 }
1199 /* Get function pointer hidden within datasv */
1200 funcp = (filter_t)IoDIRP(datasv);
1201 if (filter_debug)
ff0cee69 1202 warn("filter_read %d: via function %p (%s)\n",
16d20bd9
AD		 1203 idx, funcp, SvPV(datasv,na));
1204 /* Call function. The function is expected to */
1205 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1206 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1207 return (*funcp)(idx, buf_sv, maxlen);
1208}
1209
1210static char *
fd049845 1211filter_gets(sv,fp, append)
16d20bd9 1212register SV *sv;
760ac839 1213register PerlIO *fp;
fd049845 1214STRLEN append;
16d20bd9
AD		 1215{
1216 if (rsfp_filters) {
1217
55497cff 1218 if (!append)
1219 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1220 if (FILTER_READ(0, sv, 0) > 0)
1221 return ( SvPVX(sv) ) ;
1222 else
1223 return Nullch ;
1224 }
1225 else
fd049845 1226 return (sv_gets(sv, fp, append));
16d20bd9 1227
a0d0e21e
LW		 1228}
1229
1230
748a9306
LW		 1231#ifdef DEBUGGING
1232 static char* exp_name[] =
a0d0e21e 1233 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1234#endif
463ee0b2 1235
71be2cbc 1236EXT int yychar; /* last token */
463ee0b2 1237
2f3197b3 1238int
378cc40b
LW		 1239yylex()
1240{
11343788 1241 dTHR;
79072805 1242 register char *s;
378cc40b 1243 register char *d;
79072805 1244 register I32 tmp;
463ee0b2 1245 STRLEN len;
a687059c 1246
bbce6d69 1247 if (pending_ident) {
1248 char pit = pending_ident;
1249 pending_ident = 0;
1250
1251 if (in_my) {
1252 if (strchr(tokenbuf,':'))
1253 croak(no_myglob,tokenbuf);
1254 yylval.opval = newOP(OP_PADANY, 0);
1255 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1256 return PRIVATEREF;
1257 }
1258
a863c7d1
MB		 1259 if (!strchr(tokenbuf,':')) {
1260#ifdef USE_THREADS
1261 /* Check for single character per-thread magicals */
1262 if (tokenbuf[0] == '$' && tokenbuf[2] == '\0'
554b3eca
MB		 1263 && !isALPHA(tokenbuf[1]) /* Rule out obvious non-magicals */
1264 && (tmp = find_thread_magical(&tokenbuf[1])) != NOT_IN_PAD)
1265 {
a863c7d1
MB		 1266 yylval.opval = newOP(OP_SPECIFIC, 0);
1267 yylval.opval->op_targ = tmp;
1268 return PRIVATEREF;
1269 }
1270#endif /* USE_THREADS */
1271 if ((tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) {
1272 if (last_lop_op == OP_SORT &&
1273 tokenbuf[0] == '$' &&
1274 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1275 && !tokenbuf[2])
bbce6d69 1276 {
a863c7d1
MB		 1277 for (d = in_eval ? oldoldbufptr : linestart;
1278 d < bufend && *d != '\n';
1279 d++)
1280 {
1281 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1282 croak("Can't use \"my %s\" in sort comparison",
1283 tokenbuf);
1284 }
bbce6d69 1285 }
1286 }
bbce6d69 1287
a863c7d1
MB		 1288 yylval.opval = newOP(OP_PADANY, 0);
1289 yylval.opval->op_targ = tmp;
1290 return PRIVATEREF;
1291 }
bbce6d69 1292 }
1293
1294 /* Force them to make up their mind on "@foo". */
1295 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1296 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
46fc3d4c 1297 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)))
1298 yyerror(form("In string, %s now must be written as \\%s",
1299 tokenbuf, tokenbuf));
bbce6d69 1300 }
1301
1302 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1303 yylval.opval->op_private = OPpCONST_ENTERED;
1304 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1305 ((tokenbuf[0] == '$') ? SVt_PV
1306 : (tokenbuf[0] == '@') ? SVt_PVAV
1307 : SVt_PVHV));
1308 return WORD;
1309 }
1310
79072805
LW		 1311 switch (lex_state) {
1312#ifdef COMMENTARY
1313 case LEX_NORMAL: /* Some compilers will produce faster */
1314 case LEX_INTERPNORMAL: /* code if we comment these out. */
1315 break;
1316#endif
1317
1318 case LEX_KNOWNEXT:
1319 nexttoke--;
1320 yylval = nextval[nexttoke];
463ee0b2 1321 if (!nexttoke) {
79072805 1322 lex_state = lex_defer;
463ee0b2 1323 expect = lex_expect;
a0d0e21e 1324 lex_defer = LEX_NORMAL;
463ee0b2 1325 }
79072805
LW		 1326 return(nexttype[nexttoke]);
1327
1328 case LEX_INTERPCASEMOD:
1329#ifdef DEBUGGING
1330 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1331 croak("panic: INTERPCASEMOD");
79072805
LW		 1332#endif
1333 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1334 char oldmod;
79072805 1335 if (lex_casemods) {
a0d0e21e
LW		 1336 oldmod = lex_casestack[--lex_casemods];
1337 lex_casestack[lex_casemods] = '\0';
1338 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1339 bufptr += 2;
1340 lex_state = LEX_INTERPCONCAT;
1341 }
79072805
LW		 1342 return ')';
1343 }
a0d0e21e
LW		 1344 if (bufptr != bufend)
1345 bufptr += 2;
1346 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1347 return yylex();
1348 }
1349 else {
1350 s = bufptr + 1;
1351 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1352 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1353 if (strchr("LU", *s) &&
1354 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1355 {
1356 lex_casestack[--lex_casemods] = '\0';
1357 return ')';
1358 }
1359 if (lex_casemods > 10) {
89bfa8cd 1360 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1361 if (newlb != lex_casestack) {
1362 SAVEFREEPV(newlb);
1363 lex_casestack = newlb;
1364 }
1365 }
1366 lex_casestack[lex_casemods++] = *s;
1367 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1368 lex_state = LEX_INTERPCONCAT;
1369 nextval[nexttoke].ival = 0;
1370 force_next('(');
1371 if (*s == 'l')
1372 nextval[nexttoke].ival = OP_LCFIRST;
1373 else if (*s == 'u')
1374 nextval[nexttoke].ival = OP_UCFIRST;
1375 else if (*s == 'L')
1376 nextval[nexttoke].ival = OP_LC;
1377 else if (*s == 'U')
1378 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1379 else if (*s == 'Q')
1380 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1381 else
463ee0b2 1382 croak("panic: yylex");
79072805
LW		 1383 bufptr = s + 1;
1384 force_next(FUNC);
1385 if (lex_starts) {
1386 s = bufptr;
463ee0b2 1387 lex_starts = 0;
79072805
LW		 1388 Aop(OP_CONCAT);
1389 }
1390 else
1391 return yylex();
1392 }
1393
55497cff 1394 case LEX_INTERPPUSH:
1395 return sublex_push();
1396
79072805
LW		 1397 case LEX_INTERPSTART:
1398 if (bufptr == bufend)
1399 return sublex_done();
1400 expect = XTERM;
1401 lex_dojoin = (*bufptr == '@');
1402 lex_state = LEX_INTERPNORMAL;
1403 if (lex_dojoin) {
1404 nextval[nexttoke].ival = 0;
1405 force_next(',');
554b3eca
MB		 1406#ifdef USE_THREADS
1407 nextval[nexttoke].opval = newOP(OP_SPECIFIC, 0);
1408 nextval[nexttoke].opval->op_targ = find_thread_magical("\"");
1409 force_next(PRIVATEREF);
1410#else
a0d0e21e 1411 force_ident("\"", '$');
554b3eca 1412#endif /* USE_THREADS */
79072805
LW		 1413 nextval[nexttoke].ival = 0;
1414 force_next('$');
1415 nextval[nexttoke].ival = 0;
1416 force_next('(');
1417 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1418 force_next(FUNC);
1419 }
1420 if (lex_starts++) {
1421 s = bufptr;
1422 Aop(OP_CONCAT);
1423 }
68dc0745 1424 return yylex();
79072805
LW		 1425
1426 case LEX_INTERPENDMAYBE:
1427 if (intuit_more(bufptr)) {
1428 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1429 break;
1430 }
1431 /* FALL THROUGH */
1432
1433 case LEX_INTERPEND:
1434 if (lex_dojoin) {
1435 lex_dojoin = FALSE;
1436 lex_state = LEX_INTERPCONCAT;
1437 return ')';
1438 }
1439 /* FALLTHROUGH */
1440 case LEX_INTERPCONCAT:
1441#ifdef DEBUGGING
1442 if (lex_brackets)
463ee0b2 1443 croak("panic: INTERPCONCAT");
79072805
LW		 1444#endif
1445 if (bufptr == bufend)
1446 return sublex_done();
1447
ed6116ce 1448 if (SvIVX(linestr) == '\'') {
79072805
LW		 1449 SV *sv = newSVsv(linestr);
1450 if (!lex_inpat)
1451 sv = q(sv);
1452 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1453 s = bufend;
1454 }
1455 else {
1456 s = scan_const(bufptr);
1457 if (*s == '\\')
1458 lex_state = LEX_INTERPCASEMOD;
1459 else
1460 lex_state = LEX_INTERPSTART;
1461 }
1462
1463 if (s != bufptr) {
1464 nextval[nexttoke] = yylval;
463ee0b2 1465 expect = XTERM;
79072805
LW		 1466 force_next(THING);
1467 if (lex_starts++)
1468 Aop(OP_CONCAT);
1469 else {
1470 bufptr = s;
1471 return yylex();
1472 }
1473 }
1474
1475 return yylex();
a0d0e21e
LW		 1476 case LEX_FORMLINE:
1477 lex_state = LEX_NORMAL;
1478 s = scan_formline(bufptr);
1479 if (!lex_formbrack)
1480 goto rightbracket;
1481 OPERATOR(';');
79072805
LW		 1482 }
1483
1484 s = bufptr;
a687059c
LW		 1485 oldoldbufptr = oldbufptr;
1486 oldbufptr = s;
79072805 1487 DEBUG_p( {
760ac839 1488 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1489 } )
463ee0b2
LW		 1490
1491 retry:
378cc40b
LW		 1492 switch (*s) {
1493 default:
54310121 1494 croak("Unrecognized character \\%03o", *s & 255);
e929a76b
LW		 1495 case 4:
1496 case 26:
1497 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1498 case 0:
463ee0b2 1499 if (!rsfp) {
55497cff 1500 last_uni = 0;
1501 last_lop = 0;
463ee0b2
LW		 1502 if (lex_brackets)
1503 yyerror("Missing right bracket");
79072805 1504 TOKEN(0);
463ee0b2 1505 }
a687059c
LW		 1506 if (s++ < bufend)
1507 goto retry; /* ignore stray nulls */
2f3197b3 1508 last_uni = 0;
79072805 1509 last_lop = 0;
a0d0e21e 1510 if (!in_eval && !preambled) {
79072805 1511 preambled = TRUE;
a0d0e21e 1512 sv_setpv(linestr,incl_perldb());
91b7def8 1513 if (SvCUR(linestr))
1514 sv_catpv(linestr,";");
1515 if (preambleav){
1516 while(AvFILL(preambleav) >= 0) {
1517 SV *tmpsv = av_shift(preambleav);
1518 sv_catsv(linestr, tmpsv);
1519 sv_catpv(linestr, ";");
1520 sv_free(tmpsv);
1521 }
1522 sv_free((SV*)preambleav);
1523 preambleav = NULL;
1524 }
79072805
LW		 1525 if (minus_n || minus_p) {
1526 sv_catpv(linestr, "LINE: while (<>) {");
1527 if (minus_l)
a0d0e21e 1528 sv_catpv(linestr,"chomp;");
8fd239a7
CS		 1529 if (minus_a) {
1530 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1531 if (gv)
1532 GvIMPORTED_AV_on(gv);
1533 if (minus_F) {
54310121 1534 if (strchr("/'\"", *splitstr)
1535 && strchr(splitstr + 1, *splitstr))
46fc3d4c 1536 sv_catpvf(linestr, "@F=split(%s);", splitstr);
54310121 1537 else {
1538 char delim;
1539 s = "'~#\200\1'"; /* surely one char is unused...*/
1540 while (s[1] && strchr(splitstr, *s)) s++;
1541 delim = *s;
46fc3d4c 1542 sv_catpvf(linestr, "@F=split(%s%c",
1543 "q" + (delim == '\''), delim);
1544 for (s = splitstr; *s; s++) {
54310121 1545 if (*s == '\\')
46fc3d4c 1546 sv_catpvn(linestr, "\\", 1);
1547 sv_catpvn(linestr, s, 1);
54310121 1548 }
46fc3d4c 1549 sv_catpvf(linestr, "%c);", delim);
54310121 1550 }
2304df62
AD		 1551 }
1552 else
1553 sv_catpv(linestr,"@F=split(' ');");
1554 }
79072805 1555 }
a0d0e21e 1556 sv_catpv(linestr, "\n");
fd049845 1557 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1558 bufend = SvPVX(linestr) + SvCUR(linestr);
84902520 1559 if (PERLDB_LINE && curstash != debstash) {
a0d0e21e
LW		 1560 SV *sv = NEWSV(85,0);
1561
1562 sv_upgrade(sv, SVt_PVMG);
1563 sv_setsv(sv,linestr);
1564 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1565 }
79072805 1566 goto retry;
a687059c 1567 }
e929a76b 1568 do {
fd049845 1569 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1570 fake_eof:
395c3793 1571 if (rsfp) {
a0d0e21e 1572 if (preprocess && !in_eval)
79072805 1573 (void)my_pclose(rsfp);
760ac839
LW		 1574 else if ((PerlIO *)rsfp == PerlIO_stdin())
1575 PerlIO_clearerr(rsfp);
395c3793 1576 else
760ac839 1577 (void)PerlIO_close(rsfp);
90248788
TB		 1578 if (e_fp == rsfp)
1579 e_fp = Nullfp;
395c3793
LW		 1580 rsfp = Nullfp;
1581 }
a0d0e21e 1582 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1583 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1584 sv_catpv(linestr,";}");
fd049845 1585 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1586 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1587 minus_n = minus_p = 0;
1588 goto retry;
1589 }
fd049845 1590 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1591 sv_setpv(linestr,"");
1592 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1593 }
a0d0e21e
LW		 1594 if (doextract) {
1595 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1596 doextract = FALSE;
1597
1598 /* Incest with pod. */
1599 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1600 sv_setpv(linestr, "");
fd049845 1601 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1602 bufend = SvPVX(linestr) + SvCUR(linestr);
1603 doextract = FALSE;
1604 }
1605 }
463ee0b2 1606 incline(s);
e929a76b 1607 } while (doextract);
fd049845 1608 oldoldbufptr = oldbufptr = bufptr = linestart = s;
84902520 1609 if (PERLDB_LINE && curstash != debstash) {
79072805 1610 SV *sv = NEWSV(85,0);
a687059c 1611
93a17b20 1612 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1613 sv_setsv(sv,linestr);
1614 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1615 }
463ee0b2 1616 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1617 if (curcop->cop_line == 1) {
1618 while (s < bufend && isSPACE(*s))
1619 s++;
a0d0e21e 1620 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1621 s++;
44a8e56a 1622 d = Nullch;
1623 if (!in_eval) {
1624 if (*s == '#' && *(s+1) == '!')
1625 d = s + 2;
1626#ifdef ALTERNATE_SHEBANG
1627 else {
1628 static char as[] = ALTERNATE_SHEBANG;
1629 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1630 d = s + (sizeof(as) - 1);
1631 }
1632#endif /* ALTERNATE_SHEBANG */
1633 }
1634 if (d) {
b8378b72 1635 char *ipath;
774d564b 1636 char *ipathend;
b8378b72 1637
774d564b 1638 while (isSPACE(*d))
b8378b72
CS		 1639 d++;
1640 ipath = d;
774d564b 1641 while (*d && !isSPACE(*d))
1642 d++;
1643 ipathend = d;
1644
1645#ifdef ARG_ZERO_IS_SCRIPT
1646 if (ipathend > ipath) {
1647 /*
1648 * HP-UX (at least) sets argv[0] to the script name,
1649 * which makes $^X incorrect. And Digital UNIX and Linux,
1650 * at least, set argv[0] to the basename of the Perl
1651 * interpreter. So, having found "#!", we'll set it right.
1652 */
1653 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1654 assert(SvPOK(x) || SvGMAGICAL(x));
9607fc9c 1655 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
774d564b 1656 sv_setpvn(x, ipath, ipathend - ipath);
9607fc9c 1657 SvSETMAGIC(x);
1658 }
774d564b 1659 TAINT_NOT; /* $^X is always tainted, but that's OK */
8ebc5c01 1660 }
774d564b 1661#endif /* ARG_ZERO_IS_SCRIPT */
b8378b72
CS		 1662
1663 /*
1664 * Look for options.
1665 */
748a9306
LW		 1666 d = instr(s,"perl -");
1667 if (!d)
1668 d = instr(s,"perl");
44a8e56a 1669#ifdef ALTERNATE_SHEBANG
1670 /*
1671 * If the ALTERNATE_SHEBANG on this system starts with a
1672 * character that can be part of a Perl expression, then if
1673 * we see it but not "perl", we're probably looking at the
1674 * start of Perl code, not a request to hand off to some
1675 * other interpreter. Similarly, if "perl" is there, but
1676 * not in the first 'word' of the line, we assume the line
1677 * contains the start of the Perl program.
44a8e56a 1678 */
1679 if (d && *s != '#') {
774d564b 1680 char *c = ipath;
44a8e56a 1681 while (*c && !strchr("; \t\r\n\f\v#", *c))
1682 c++;
1683 if (c < d)
1684 d = Nullch; /* "perl" not in first word; ignore */
1685 else
1686 *s = '#'; /* Don't try to parse shebang line */
1687 }
774d564b 1688#endif /* ALTERNATE_SHEBANG */
748a9306 1689 if (!d &&
44a8e56a 1690 *s == '#' &&
774d564b 1691 ipathend > ipath &&
748a9306
LW		 1692 !minus_c &&
1693 !instr(s,"indir") &&
1694 instr(origargv[0],"perl"))
1695 {
9f68db38 1696 char **newargv;
9f68db38 1697
774d564b 1698 *ipathend = '\0';
1699 s = ipathend + 1;
de3bb511 1700 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1701 s++;
1702 if (s < bufend) {
1703 Newz(899,newargv,origargc+3,char*);
1704 newargv[1] = s;
de3bb511 1705 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1706 s++;
1707 *s = '\0';
1708 Copy(origargv+1, newargv+2, origargc+1, char*);
1709 }
1710 else
1711 newargv = origargv;
774d564b 1712 newargv[0] = ipath;
1713 execv(ipath, newargv);
1714 croak("Can't exec %s", ipath);
9f68db38 1715 }
748a9306 1716 if (d) {
ba6d6ac9
CS		 1717 U32 oldpdb = perldb;
1718 bool oldn = minus_n;
1719 bool oldp = minus_p;
748a9306
LW		 1720
1721 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1722 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1723
1724 if (*d++ == '-') {
8cc95fdb 1725 do {
1726 if (*d == 'M' || *d == 'm') {
1727 char *m = d;
1728 while (*d && !isSPACE(*d)) d++;
1729 croak("Too late for \"-%.*s\" option",
1730 (int)(d - m), m);
1731 }
1732 d = moreswitches(d);
1733 } while (d);
84902520 1734 if (PERLDB_LINE && !oldpdb ||
b084f20b 1735 ( minus_n || minus_p ) && !(oldn || oldp) )
1736 /* if we have already added "LINE: while (<>) {",
1737 we must not do it again */
748a9306
LW		 1738 {
1739 sv_setpv(linestr, "");
fd049845 1740 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1741 bufend = SvPVX(linestr) + SvCUR(linestr);
1742 preambled = FALSE;
84902520 1743 if (PERLDB_LINE)
748a9306
LW		 1744 (void)gv_fetchfile(origfilename);
1745 goto retry;
1746 }
a0d0e21e 1747 }
79072805 1748 }
9f68db38 1749 }
79072805 1750 }
85e6fe83 1751 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1752 bufptr = s;
1753 lex_state = LEX_FORMLINE;
1754 return yylex();
ae986130 1755 }
378cc40b 1756 goto retry;
4fdae800 1757 case '\r':
54310121 1758 warn("Illegal character \\%03o (carriage return)", '\r');
1759 croak(
1760 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
4fdae800 1761 case ' ': case '\t': case '\f': case 013:
378cc40b
LW		 1762 s++;
1763 goto retry;
378cc40b 1764 case '#':
e929a76b 1765 case '\n':
79072805 1766 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1767 d = bufend;
1768 while (s < d && *s != '\n')
378cc40b 1769 s++;
0f85fab0 1770 if (s < d)
378cc40b 1771 s++;
463ee0b2 1772 incline(s);
85e6fe83 1773 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1774 bufptr = s;
1775 lex_state = LEX_FORMLINE;
1776 return yylex();
a687059c 1777 }
378cc40b 1778 }
a687059c 1779 else {
378cc40b 1780 *s = '\0';
a687059c
LW		 1781 bufend = s;
1782 }
378cc40b
LW		 1783 goto retry;
1784 case '-':
79072805 1785 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1786 s++;
748a9306
LW		 1787 bufptr = s;
1788 tmp = *s++;
1789
1790 while (s < bufend && (*s == ' ' || *s == '\t'))
1791 s++;
1792
1793 if (strnEQ(s,"=>",2)) {
1794 if (dowarn)
1795 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
ff0cee69 1796 (int)tmp, (int)tmp);
748a9306
LW		 1797 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1798 OPERATOR('-'); /* unary minus */
1799 }
e334a159 1800 last_uni = oldbufptr;
a0d0e21e 1801 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1802 switch (tmp) {
79072805
LW		 1803 case 'r': FTST(OP_FTEREAD);
1804 case 'w': FTST(OP_FTEWRITE);
1805 case 'x': FTST(OP_FTEEXEC);
1806 case 'o': FTST(OP_FTEOWNED);
1807 case 'R': FTST(OP_FTRREAD);
1808 case 'W': FTST(OP_FTRWRITE);
1809 case 'X': FTST(OP_FTREXEC);
1810 case 'O': FTST(OP_FTROWNED);
1811 case 'e': FTST(OP_FTIS);
1812 case 'z': FTST(OP_FTZERO);
1813 case 's': FTST(OP_FTSIZE);
1814 case 'f': FTST(OP_FTFILE);
1815 case 'd': FTST(OP_FTDIR);
1816 case 'l': FTST(OP_FTLINK);
1817 case 'p': FTST(OP_FTPIPE);
1818 case 'S': FTST(OP_FTSOCK);
1819 case 'u': FTST(OP_FTSUID);
1820 case 'g': FTST(OP_FTSGID);
1821 case 'k': FTST(OP_FTSVTX);
1822 case 'b': FTST(OP_FTBLK);
1823 case 'c': FTST(OP_FTCHR);
1824 case 't': FTST(OP_FTTTY);
1825 case 'T': FTST(OP_FTTEXT);
1826 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1827 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1828 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1829 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1830 default:
ff0cee69 1831 croak("Unrecognized file test: -%c", (int)tmp);
378cc40b
LW		 1832 break;
1833 }
1834 }
a687059c
LW		 1835 tmp = *s++;
1836 if (*s == tmp) {
1837 s++;
79072805
LW		 1838 if (expect == XOPERATOR)
1839 TERM(POSTDEC);
1840 else
1841 OPERATOR(PREDEC);
1842 }
1843 else if (*s == '>') {
1844 s++;
1845 s = skipspace(s);
1846 if (isIDFIRST(*s)) {
a0d0e21e 1847 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1848 TOKEN(ARROW);
79072805 1849 }
748a9306
LW		 1850 else if (*s == '$')
1851 OPERATOR(ARROW);
463ee0b2 1852 else
748a9306 1853 TERM(ARROW);
a687059c 1854 }
79072805
LW		 1855 if (expect == XOPERATOR)
1856 Aop(OP_SUBTRACT);
1857 else {
2f3197b3
LW		 1858 if (isSPACE(*s) || !isSPACE(*bufptr))
1859 check_uni();
79072805 1860 OPERATOR('-'); /* unary minus */
2f3197b3 1861 }
79072805 1862
378cc40b 1863 case '+':
a687059c
LW		 1864 tmp = *s++;
1865 if (*s == tmp) {
378cc40b 1866 s++;
79072805
LW		 1867 if (expect == XOPERATOR)
1868 TERM(POSTINC);
1869 else
1870 OPERATOR(PREINC);
378cc40b 1871 }
79072805
LW		 1872 if (expect == XOPERATOR)
1873 Aop(OP_ADD);
1874 else {
2f3197b3
LW		 1875 if (isSPACE(*s) || !isSPACE(*bufptr))
1876 check_uni();
a687059c 1877 OPERATOR('+');
2f3197b3 1878 }
a687059c 1879
378cc40b 1880 case '*':
79072805 1881 if (expect != XOPERATOR) {
8903cb82 1882 s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE);
463ee0b2 1883 expect = XOPERATOR;
a0d0e21e
LW		 1884 force_ident(tokenbuf, '*');
1885 if (!*tokenbuf)
1886 PREREF('*');
79072805 1887 TERM('*');
a687059c 1888 }
79072805
LW		 1889 s++;
1890 if (*s == '*') {
a687059c 1891 s++;
79072805 1892 PWop(OP_POW);
a687059c 1893 }
79072805
LW		 1894 Mop(OP_MULTIPLY);
1895
378cc40b 1896 case '%':
bbce6d69 1897 if (expect == XOPERATOR) {
1898 ++s;
1899 Mop(OP_MODULO);
a687059c 1900 }
bbce6d69 1901 tokenbuf[0] = '%';
8903cb82 1902 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE);
bbce6d69 1903 if (!tokenbuf[1]) {
1904 if (s == bufend)
1905 yyerror("Final % should be \\% or %name");
1906 PREREF('%');
a687059c 1907 }
bbce6d69 1908 pending_ident = '%';
1909 TERM('%');
a687059c 1910
378cc40b 1911 case '^':
79072805 1912 s++;
a0d0e21e 1913 BOop(OP_BIT_XOR);
79072805
LW		 1914 case '[':
1915 lex_brackets++;
1916 /* FALL THROUGH */
378cc40b 1917 case '~':
378cc40b 1918 case ',':
378cc40b
LW		 1919 tmp = *s++;
1920 OPERATOR(tmp);
a0d0e21e
LW		 1921 case ':':
1922 if (s[1] == ':') {
1923 len = 0;
1924 goto just_a_word;
1925 }
1926 s++;
1927 OPERATOR(':');
8990e307
LW		 1928 case '(':
1929 s++;
a0d0e21e 1930 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1931 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1932 else
1933 expect = XTERM;
1934 TOKEN('(');
378cc40b 1935 case ';':
79072805
LW		 1936 if (curcop->cop_line < copline)
1937 copline = curcop->cop_line;
378cc40b
LW		 1938 tmp = *s++;
1939 OPERATOR(tmp);
1940 case ')':
378cc40b 1941 tmp = *s++;
16d20bd9
AD		 1942 s = skipspace(s);
1943 if (*s == '{')
1944 PREBLOCK(tmp);
378cc40b 1945 TERM(tmp);
79072805
LW		 1946 case ']':
1947 s++;
463ee0b2
LW		 1948 if (lex_brackets <= 0)
1949 yyerror("Unmatched right bracket");
1950 else
1951 --lex_brackets;
79072805 1952 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1953 if (lex_brackets == 0) {
a0d0e21e 1954 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1955 lex_state = LEX_INTERPEND;
1956 }
1957 }
4633a7c4 1958 TERM(']');
79072805
LW		 1959 case '{':
1960 leftbracket:
79072805 1961 s++;
8990e307 1962 if (lex_brackets > 100) {
89bfa8cd 1963 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1964 if (newlb != lex_brackstack) {
1965 SAVEFREEPV(newlb);
1966 lex_brackstack = newlb;
1967 }
1968 }
a0d0e21e
LW		 1969 switch (expect) {
1970 case XTERM:
1971 if (lex_formbrack) {
1972 s--;
1973 PRETERMBLOCK(DO);
1974 }
1975 if (oldoldbufptr == last_lop)
1976 lex_brackstack[lex_brackets++] = XTERM;
1977 else
1978 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1979 OPERATOR(HASHBRACK);
a0d0e21e 1980 case XOPERATOR:
748a9306
LW		 1981 while (s < bufend && (*s == ' ' || *s == '\t'))
1982 s++;
44a8e56a 1983 d = s;
1984 tokenbuf[0] = '\0';
1985 if (d < bufend && *d == '-') {
1986 tokenbuf[0] = '-';
1987 d++;
1988 while (d < bufend && (*d == ' ' || *d == '\t'))
1989 d++;
1990 }
1991 if (d < bufend && isIDFIRST(*d)) {
8903cb82 1992 d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1,
1993 FALSE, &len);
748a9306
LW		 1994 while (d < bufend && (*d == ' ' || *d == '\t'))
1995 d++;
1996 if (*d == '}') {
44a8e56a 1997 char minus = (tokenbuf[0] == '-');
748a9306 1998 if (dowarn &&
44a8e56a 1999 (keyword(tokenbuf + 1, len) ||
2000 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
2001 perl_get_cv(tokenbuf + 1, FALSE) ))
748a9306 2002 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
44a8e56a 2003 tokenbuf + !minus, tokenbuf + !minus);
2004 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
2005 if (minus)
2006 force_next('-');
748a9306
LW		 2007 }
2008 }
2009 /* FALL THROUGH */
2010 case XBLOCK:
a0d0e21e 2011 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 2012 expect = XSTATE;
a0d0e21e
LW		 2013 break;
2014 case XTERMBLOCK:
2015 lex_brackstack[lex_brackets++] = XOPERATOR;
2016 expect = XSTATE;
2017 break;
2018 default: {
2019 char *t;
2020 if (oldoldbufptr == last_lop)
2021 lex_brackstack[lex_brackets++] = XTERM;
2022 else
2023 lex_brackstack[lex_brackets++] = XOPERATOR;
2024 s = skipspace(s);
2025 if (*s == '}')
2026 OPERATOR(HASHBRACK);
b8a4b1be
GS		 2027 /* This hack serves to disambiguate a pair of curlies
2028 * as being a block or an anon hash. Normally, expectation
2029 * determines that, but in cases where we're not in a
2030 * position to expect anything in particular (like inside
2031 * eval"") we have to resolve the ambiguity. This code
2032 * covers the case where the first term in the curlies is a
2033 * quoted string. Most other cases need to be explicitly
2034 * disambiguated by prepending a `+' before the opening
2035 * curly in order to force resolution as an anon hash.
2036 *
2037 * XXX should probably propagate the outer expectation
2038 * into eval"" to rely less on this hack, but that could
2039 * potentially break current behavior of eval"".
2040 * GSAR 97-07-21
2041 */
2042 t = s;
2043 if (*s == '\'' || *s == '"' || *s == '`') {
2044 /* common case: get past first string, handling escapes */
2045 for (t++; t < bufend && *t != *s;)
2046 if (*t++ == '\\' && (*t == '\\' || *t == *s))
2047 t++;
2048 t++;
a0d0e21e 2049 }
b8a4b1be
GS		 2050 else if (*s == 'q') {
2051 if (++t < bufend
2052 && (!isALNUM(*t)
2053 || ((*t == 'q' || *t == 'x') && ++t < bufend
2054 && !isALNUM(*t)))) {
2055 char *tmps;
2056 char open, close, term;
2057 I32 brackets = 1;
2058
2059 while (t < bufend && isSPACE(*t))
2060 t++;
2061 term = *t;
2062 open = term;
2063 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
2064 term = tmps[5];
2065 close = term;
2066 if (open == close)
2067 for (t++; t < bufend; t++) {
6d07e5e9 2068 if (*t == '\\' && t+1 < bufend && open != '\\')
b8a4b1be 2069 t++;
6d07e5e9 2070 else if (*t == open)
b8a4b1be
GS		 2071 break;
2072 }
2073 else
2074 for (t++; t < bufend; t++) {
6d07e5e9 2075 if (*t == '\\' && t+1 < bufend)
b8a4b1be 2076 t++;
6d07e5e9 2077 else if (*t == close && --brackets <= 0)
b8a4b1be
GS		 2078 break;
2079 else if (*t == open)
2080 brackets++;
2081 }
2082 }
2083 t++;
a0d0e21e 2084 }
b8a4b1be
GS		 2085 else if (isALPHA(*s)) {
2086 for (t++; t < bufend && isALNUM(*t); t++) ;
a0d0e21e 2087 }
a0d0e21e
LW		 2088 while (t < bufend && isSPACE(*t))
2089 t++;
b8a4b1be
GS		 2090 /* if comma follows first term, call it an anon hash */
2091 /* XXX it could be a comma expression with loop modifiers */
2092 if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s)))
2093 || (*t == '=' && t[1] == '>')))
a0d0e21e
LW		 2094 OPERATOR(HASHBRACK);
2095 if (expect == XREF)
2096 expect = XTERM;
2097 else {
2098 lex_brackstack[lex_brackets-1] = XSTATE;
2099 expect = XSTATE;
2100 }
8990e307 2101 }
a0d0e21e 2102 break;
463ee0b2 2103 }
79072805
LW		 2104 yylval.ival = curcop->cop_line;
2105 if (isSPACE(*s) || *s == '#')
2106 copline = NOLINE; /* invalidate current command line number */
79072805 2107 TOKEN('{');
378cc40b 2108 case '}':
79072805
LW		 2109 rightbracket:
2110 s++;
463ee0b2
LW		 2111 if (lex_brackets <= 0)
2112 yyerror("Unmatched right bracket");
2113 else
2114 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 2115 if (lex_brackets < lex_formbrack)
2116 lex_formbrack = 0;
79072805 2117 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 2118 if (lex_brackets == 0) {
79072805
LW		 2119 if (lex_fakebrack) {
2120 lex_state = LEX_INTERPEND;
2121 bufptr = s;
2122 return yylex(); /* ignore fake brackets */
2123 }
fa83b5b6 2124 if (*s == '-' && s[1] == '>')
2125 lex_state = LEX_INTERPENDMAYBE;
2126 else if (*s != '[' && *s != '{')
79072805
LW		 2127 lex_state = LEX_INTERPEND;
2128 }
2129 }
748a9306
LW		 2130 if (lex_brackets < lex_fakebrack) {
2131 bufptr = s;
2132 lex_fakebrack = 0;
2133 return yylex(); /* ignore fake brackets */
2134 }
79072805
LW		 2135 force_next('}');
2136 TOKEN(';');
378cc40b
LW		 2137 case '&':
2138 s++;
2139 tmp = *s++;
2140 if (tmp == '&')
a0d0e21e 2141 AOPERATOR(ANDAND);
378cc40b 2142 s--;
463ee0b2 2143 if (expect == XOPERATOR) {
fd049845 2144 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 2145 curcop->cop_line--;
2146 warn(warn_nosemi);
2147 curcop->cop_line++;
2148 }
79072805 2149 BAop(OP_BIT_AND);
463ee0b2 2150 }
79072805 2151
8903cb82 2152 s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE);
463ee0b2
LW		 2153 if (*tokenbuf) {
2154 expect = XOPERATOR;
a0d0e21e 2155 force_ident(tokenbuf, '&');
463ee0b2 2156 }
79072805
LW		 2157 else
2158 PREREF('&');
c07a80fd 2159 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 2160 TERM('&');
2161
378cc40b
LW		 2162 case '|':
2163 s++;
2164 tmp = *s++;
2165 if (tmp == '|')
a0d0e21e 2166 AOPERATOR(OROR);
378cc40b 2167 s--;
79072805 2168 BOop(OP_BIT_OR);
378cc40b
LW		 2169 case '=':
2170 s++;
2171 tmp = *s++;
2172 if (tmp == '=')
79072805
LW		 2173 Eop(OP_EQ);
2174 if (tmp == '>')
2175 OPERATOR(',');
378cc40b 2176 if (tmp == '~')
79072805 2177 PMop(OP_MATCH);
463ee0b2 2178 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
ff0cee69 2179 warn("Reversed %c= operator",(int)tmp);
378cc40b 2180 s--;
748a9306 2181 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 2182 (s == linestart+1 || s[-2] == '\n') )
748a9306 2183 {
a5f75d66
AD		 2184 if (in_eval && !rsfp) {
2185 d = bufend;
2186 while (s < d) {
2187 if (*s++ == '\n') {
2188 incline(s);
2189 if (strnEQ(s,"=cut",4)) {
2190 s = strchr(s,'\n');
2191 if (s)
2192 s++;
2193 else
2194 s = d;
2195 incline(s);
2196 goto retry;
2197 }
2198 }
2199 }
2200 goto retry;
2201 }
a0d0e21e
LW		 2202 s = bufend;
2203 doextract = TRUE;
2204 goto retry;
2205 }
2206 if (lex_brackets < lex_formbrack) {
2207 char *t;
2208 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2209 if (*t == '\n' || *t == '#') {
2210 s--;
2211 expect = XBLOCK;
2212 goto leftbracket;
2213 }
79072805 2214 }
a0d0e21e
LW		 2215 yylval.ival = 0;
2216 OPERATOR(ASSIGNOP);
378cc40b
LW		 2217 case '!':
2218 s++;
2219 tmp = *s++;
2220 if (tmp == '=')
79072805 2221 Eop(OP_NE);
378cc40b 2222 if (tmp == '~')
79072805 2223 PMop(OP_NOT);
378cc40b
LW		 2224 s--;
2225 OPERATOR('!');
2226 case '<':
79072805 2227 if (expect != XOPERATOR) {
93a17b20 2228 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2229 check_uni();
79072805
LW		 2230 if (s[1] == '<')
2231 s = scan_heredoc(s);
2232 else
2233 s = scan_inputsymbol(s);
2234 TERM(sublex_start());
378cc40b
LW		 2235 }
2236 s++;
2237 tmp = *s++;
2238 if (tmp == '<')
79072805 2239 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2240 if (tmp == '=') {
2241 tmp = *s++;
2242 if (tmp == '>')
79072805 2243 Eop(OP_NCMP);
395c3793 2244 s--;
79072805 2245 Rop(OP_LE);
395c3793 2246 }
378cc40b 2247 s--;
79072805 2248 Rop(OP_LT);
378cc40b
LW		 2249 case '>':
2250 s++;
2251 tmp = *s++;
2252 if (tmp == '>')
79072805 2253 SHop(OP_RIGHT_SHIFT);
378cc40b 2254 if (tmp == '=')
79072805 2255 Rop(OP_GE);
378cc40b 2256 s--;
79072805 2257 Rop(OP_GT);
378cc40b
LW		 2258
2259 case '$':
bbce6d69 2260 CLINE;
2261
8990e307 2262 if (expect == XOPERATOR) {
a0d0e21e
LW		 2263 if (lex_formbrack && lex_brackets == lex_formbrack) {
2264 expect = XTERM;
2265 depcom();
bbce6d69 2266 return ','; /* grandfather non-comma-format format */
a0d0e21e 2267 }
8990e307 2268 }
a0d0e21e 2269
bbce6d69 2270 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2271 if (expect == XOPERATOR)
2272 no_op("Array length", bufptr);
2273 tokenbuf[0] = '@';
8903cb82 2274 s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1,
2275 FALSE);
bbce6d69 2276 if (!tokenbuf[1])
a0d0e21e 2277 PREREF(DOLSHARP);
463ee0b2 2278 expect = XOPERATOR;
bbce6d69 2279 pending_ident = '#';
463ee0b2 2280 TOKEN(DOLSHARP);
79072805 2281 }
bbce6d69 2282
2283 if (expect == XOPERATOR)
2284 no_op("Scalar", bufptr);
2285 tokenbuf[0] = '$';
8903cb82 2286 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
bbce6d69 2287 if (!tokenbuf[1]) {
2288 if (s == bufend)
2289 yyerror("Final $ should be \\$ or $name");
2290 PREREF('$');
8990e307 2291 }
a0d0e21e 2292
bbce6d69 2293 /* This kludge not intended to be bulletproof. */
2294 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2295 yylval.opval = newSVOP(OP_CONST, 0,
2296 newSViv((IV)compiling.cop_arybase));
2297 yylval.opval->op_private = OPpCONST_ARYBASE;
2298 TERM(THING);
2299 }
2300
ff68c719 2301 d = s;
2302 if (lex_state == LEX_NORMAL)
2303 s = skipspace(s);
2304
bbce6d69 2305 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2306 char *t;
2307 if (*s == '[') {
2308 tokenbuf[0] = '@';
2309 if (dowarn) {
2310 for(t = s + 1;
2311 isSPACE(*t) || isALNUM(*t) || *t == '$';
2312 t++) ;
a0d0e21e
LW		 2313 if (*t++ == ',') {
2314 bufptr = skipspace(bufptr);
bbce6d69 2315 while (t < bufend && *t != ']')
2316 t++;
a0d0e21e 2317 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2318 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2319 }
2320 }
bbce6d69 2321 }
2322 else if (*s == '{') {
2323 tokenbuf[0] = '%';
2324 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2325 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2326 {
8903cb82 2327 char tmpbuf[sizeof tokenbuf];
a0d0e21e
LW		 2328 STRLEN len;
2329 for (t++; isSPACE(*t); t++) ;
748a9306 2330 if (isIDFIRST(*t)) {
8903cb82 2331 t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len);
748a9306
LW		 2332 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2333 warn("You need to quote \"%s\"", tmpbuf);
2334 }
93a17b20
LW		 2335 }
2336 }
2f3197b3 2337 }
bbce6d69 2338
2339 expect = XOPERATOR;
ff68c719 2340 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
bbce6d69 2341 bool islop = (last_lop == oldoldbufptr);
bbce6d69 2342 if (!islop || last_lop_op == OP_GREPSTART)
2343 expect = XOPERATOR;
2344 else if (strchr("$@\"'`q", *s))
2345 expect = XTERM; /* e.g. print $fh "foo" */
2346 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2347 expect = XTERM; /* e.g. print $fh &sub */
68dc0745 2348 else if (isIDFIRST(*s)) {
8903cb82 2349 char tmpbuf[sizeof tokenbuf];
2350 scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
84902520
TB		 2351 if (tmp = keyword(tmpbuf, len)) {
2352 /* binary operators exclude handle interpretations */
2353 switch (tmp) {
2354 case -KEY_x:
2355 case -KEY_eq:
2356 case -KEY_ne:
2357 case -KEY_gt:
2358 case -KEY_lt:
2359 case -KEY_ge:
2360 case -KEY_le:
2361 case -KEY_cmp:
2362 break;
2363 default:
2364 expect = XTERM; /* e.g. print $fh length() */
2365 break;
2366 }
2367 }
68dc0745 2368 else {
2369 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2370 if (gv && GvCVu(gv))
2371 expect = XTERM; /* e.g. print $fh subr() */
93a17b20 2372 }
93a17b20 2373 }
bbce6d69 2374 else if (isDIGIT(*s))
2375 expect = XTERM; /* e.g. print $fh 3 */
2376 else if (*s == '.' && isDIGIT(s[1]))
2377 expect = XTERM; /* e.g. print $fh .3 */
2378 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2379 expect = XTERM; /* e.g. print $fh -1 */
2380 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2381 expect = XTERM; /* print $fh <<"EOF" */
2382 }
2383 pending_ident = '$';
79072805 2384 TOKEN('$');
378cc40b
LW		 2385
2386 case '@':
8990e307 2387 if (expect == XOPERATOR)
bbce6d69 2388 no_op("Array", s);
2389 tokenbuf[0] = '@';
8903cb82 2390 s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE);
bbce6d69 2391 if (!tokenbuf[1]) {
2392 if (s == bufend)
2393 yyerror("Final @ should be \\@ or @name");
2394 PREREF('@');
2395 }
ff68c719 2396 if (lex_state == LEX_NORMAL)
2397 s = skipspace(s);
bbce6d69 2398 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2399 if (*s == '{')
2400 tokenbuf[0] = '%';
a0d0e21e
LW		 2401
2402 /* Warn about @ where they meant $. */
2403 if (dowarn) {
2404 if (*s == '[' || *s == '{') {
2405 char *t = s + 1;
2406 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2407 t++;
2408 if (*t == '}' || *t == ']') {
2409 t++;
2410 bufptr = skipspace(bufptr);
2411 warn("Scalar value %.*s better written as $%.*s",
2412 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2413 }
93a17b20
LW		 2414 }
2415 }
463ee0b2 2416 }
bbce6d69 2417 pending_ident = '@';
79072805 2418 TERM('@');
378cc40b
LW		 2419
2420 case '/': /* may either be division or pattern */
2421 case '?': /* may either be conditional or pattern */
79072805 2422 if (expect != XOPERATOR) {
2f3197b3 2423 check_uni();
79072805
LW		 2424 s = scan_pat(s);
2425 TERM(sublex_start());
378cc40b
LW		 2426 }
2427 tmp = *s++;
a687059c 2428 if (tmp == '/')
79072805 2429 Mop(OP_DIVIDE);
378cc40b
LW		 2430 OPERATOR(tmp);
2431
2432 case '.':
748a9306 2433 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2434 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2435 lex_formbrack = 0;
8990e307 2436 expect = XSTATE;
79072805
LW		 2437 goto rightbracket;
2438 }
2439 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2440 tmp = *s++;
a687059c
LW		 2441 if (*s == tmp) {
2442 s++;
2f3197b3
LW		 2443 if (*s == tmp) {
2444 s++;
79072805 2445 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2446 }
2447 else
79072805 2448 yylval.ival = 0;
378cc40b 2449 OPERATOR(DOTDOT);
a687059c 2450 }
79072805 2451 if (expect != XOPERATOR)
2f3197b3 2452 check_uni();
79072805 2453 Aop(OP_CONCAT);
378cc40b
LW		 2454 }
2455 /* FALL THROUGH */
2456 case '0': case '1': case '2': case '3': case '4':
2457 case '5': case '6': case '7': case '8': case '9':
79072805 2458 s = scan_num(s);
8990e307
LW		 2459 if (expect == XOPERATOR)
2460 no_op("Number",s);
79072805
LW		 2461 TERM(THING);
2462
2463 case '\'':
8990e307 2464 s = scan_str(s);
463ee0b2 2465 if (expect == XOPERATOR) {
a0d0e21e
LW		 2466 if (lex_formbrack && lex_brackets == lex_formbrack) {
2467 expect = XTERM;
2468 depcom();
2469 return ','; /* grandfather non-comma-format format */
2470 }
463ee0b2 2471 else
8990e307 2472 no_op("String",s);
463ee0b2 2473 }
79072805 2474 if (!s)
85e6fe83 2475 missingterm((char*)0);
79072805
LW		 2476 yylval.ival = OP_CONST;
2477 TERM(sublex_start());
2478
2479 case '"':
8990e307 2480 s = scan_str(s);
463ee0b2 2481 if (expect == XOPERATOR) {
a0d0e21e
LW		 2482 if (lex_formbrack && lex_brackets == lex_formbrack) {
2483 expect = XTERM;
2484 depcom();
2485 return ','; /* grandfather non-comma-format format */
2486 }
463ee0b2 2487 else
8990e307 2488 no_op("String",s);
463ee0b2 2489 }
79072805 2490 if (!s)
85e6fe83 2491 missingterm((char*)0);
4633a7c4
LW		 2492 yylval.ival = OP_CONST;
2493 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2494 if (*d == '$' || *d == '@' || *d == '\\') {
2495 yylval.ival = OP_STRINGIFY;
2496 break;
2497 }
2498 }
79072805
LW		 2499 TERM(sublex_start());
2500
2501 case '`':
2502 s = scan_str(s);
8990e307
LW		 2503 if (expect == XOPERATOR)
2504 no_op("Backticks",s);
79072805 2505 if (!s)
85e6fe83 2506 missingterm((char*)0);
79072805
LW		 2507 yylval.ival = OP_BACKTICK;
2508 set_csh();
2509 TERM(sublex_start());
2510
2511 case '\\':
2512 s++;
748a9306
LW		 2513 if (dowarn && lex_inwhat && isDIGIT(*s))
2514 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2515 if (expect == XOPERATOR)
2516 no_op("Backslash",s);
79072805
LW		 2517 OPERATOR(REFGEN);
2518
2519 case 'x':
2520 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2521 s++;
2522 Mop(OP_REPEAT);
2f3197b3 2523 }
79072805
LW		 2524 goto keylookup;
2525
378cc40b 2526 case '_':
79072805
LW		 2527 case 'a': case 'A':
2528 case 'b': case 'B':
2529 case 'c': case 'C':
2530 case 'd': case 'D':
2531 case 'e': case 'E':
2532 case 'f': case 'F':
2533 case 'g': case 'G':
2534 case 'h': case 'H':
2535 case 'i': case 'I':
2536 case 'j': case 'J':
2537 case 'k': case 'K':
2538 case 'l': case 'L':
2539 case 'm': case 'M':
2540 case 'n': case 'N':
2541 case 'o': case 'O':
2542 case 'p': case 'P':
2543 case 'q': case 'Q':
2544 case 'r': case 'R':
2545 case 's': case 'S':
2546 case 't': case 'T':
2547 case 'u': case 'U':
2548 case 'v': case 'V':
2549 case 'w': case 'W':
2550 case 'X':
2551 case 'y': case 'Y':
2552 case 'z': case 'Z':
2553
2554 keylookup:
748a9306 2555 bufptr = s;
8903cb82 2556 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
8ebc5c01 2557
2558 /* Some keywords can be followed by any delimiter, including ':' */
2559 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2560 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2561 (tokenbuf[0] == 'q' &&
2562 strchr("qwx", tokenbuf[1]))));
2563
2564 /* x::* is just a word, unless x is "CORE" */
2565 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
4633a7c4
LW		 2566 goto just_a_word;
2567
3643fb5f
CS		 2568 d = s;
2569 while (d < bufend && isSPACE(*d))
2570 d++; /* no comments skipped here, or s### is misparsed */
2571
2572 /* Is this a label? */
8ebc5c01 2573 if (!tmp && expect == XSTATE
2574 && d < bufend && *d == ':' && *(d + 1) != ':') {
2575 s = d + 1;
2576 yylval.pval = savepv(tokenbuf);
2577 CLINE;
2578 TOKEN(LABEL);
3643fb5f
CS		 2579 }
2580
2581 /* Check for keywords */
a0d0e21e 2582 tmp = keyword(tokenbuf, len);
748a9306
LW		 2583
2584 /* Is this a word before a => operator? */
748a9306
LW		 2585 if (strnEQ(d,"=>",2)) {
2586 CLINE;
2587 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2588 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2589 tokenbuf, tokenbuf);
2590 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2591 yylval.opval->op_private = OPpCONST_BARE;
2592 TERM(WORD);
2593 }
2594
a0d0e21e
LW		 2595 if (tmp < 0) { /* second-class keyword? */
2596 GV* gv;
2597 if (expect != XOPERATOR &&
a5f75d66
AD		 2598 (*s != ':' || s[1] != ':') &&
2599 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2600 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2601 {
2602 tmp = 0;
2603 }
2604 else
2605 tmp = -tmp;
2606 }
2607
2608 reserved_word:
2609 switch (tmp) {
79072805
LW		 2610
2611 default: /* not a keyword */
93a17b20
LW		 2612 just_a_word: {
2613 GV *gv;
96e4d5b1 2614 SV *sv;
748a9306 2615 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2616
2617 /* Get the rest if it looks like a package qualifier */
2618
a0d0e21e 2619 if (*s == '\'' || *s == ':' && s[1] == ':') {
8903cb82 2620 s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len,
2621 TRUE, &len);
a0d0e21e
LW		 2622 if (!len)
2623 croak("Bad name after %s::", tokenbuf);
2624 }
8990e307 2625
3643fb5f 2626 if (expect == XOPERATOR) {
fd049845 2627 if (bufptr == linestart) {
463ee0b2
LW		 2628 curcop->cop_line--;
2629 warn(warn_nosemi);
2630 curcop->cop_line++;
2631 }
2632 else
54310121 2633 no_op("Bareword",s);
463ee0b2 2634 }
8990e307
LW		 2635
2636 /* Look for a subroutine with this name in current package. */
2637
85e6fe83 2638 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2639
a0d0e21e
LW		 2640 /* Presume this is going to be a bareword of some sort. */
2641
2642 CLINE;
2643 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2644 yylval.opval->op_private = OPpCONST_BARE;
2645
8990e307
LW		 2646 /* See if it's the indirect object for a list operator. */
2647
a0d0e21e
LW		 2648 if (oldoldbufptr &&
2649 oldoldbufptr < bufptr &&
2650 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2651 /* NO SKIPSPACE BEFORE HERE! */
2652 (expect == XREF ||
2653 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2654 {
748a9306
LW		 2655 bool immediate_paren = *s == '(';
2656
a0d0e21e
LW		 2657 /* (Now we can afford to cross potential line boundary.) */
2658 s = skipspace(s);
2659
2660 /* Two barewords in a row may indicate method call. */
2661
2662 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2663 return tmp;
2664
2665 /* If not a declared subroutine, it's an indirect object. */
2666 /* (But it's an indir obj regardless for sort.) */
2667
8e07c86e 2668 if ((last_lop_op == OP_SORT ||
8ebc5c01 2669 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
8e07c86e 2670 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2671 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2672 goto bareword;
93a17b20
LW		 2673 }
2674 }
8990e307
LW		 2675
2676 /* If followed by a paren, it's certainly a subroutine. */
2677
2678 expect = XOPERATOR;
2679 s = skipspace(s);
93a17b20 2680 if (*s == '(') {
79072805 2681 CLINE;
96e4d5b1 2682 if (gv && GvCVu(gv)) {
2683 for (d = s + 1; *d == ' ' || *d == '\t'; d++) ;
2684 if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) {
2685 s = d + 1;
2686 goto its_constant;
2687 }
2688 }
a0d0e21e 2689 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2690 expect = XOPERATOR;
93a17b20 2691 force_next(WORD);
c07a80fd 2692 yylval.ival = 0;
463ee0b2 2693 TOKEN('&');
79072805 2694 }
93a17b20 2695
a0d0e21e 2696 /* If followed by var or block, call it a method (unless sub) */
8990e307 2697
8ebc5c01 2698 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
463ee0b2 2699 last_lop = oldbufptr;
8990e307 2700 last_lop_op = OP_METHOD;
93a17b20 2701 PREBLOCK(METHOD);
463ee0b2
LW		 2702 }
2703
8990e307
LW		 2704 /* If followed by a bareword, see if it looks like indir obj. */
2705
a0d0e21e
LW		 2706 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2707 return tmp;
93a17b20 2708
8990e307
LW		 2709 /* Not a method, so call it a subroutine (if defined) */
2710
8ebc5c01 2711 if (gv && GvCVu(gv)) {
46fc3d4c 2712 CV* cv;
748a9306 2713 if (lastchar == '-')
c2960299 2714 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2715 tokenbuf, tokenbuf);
8990e307 2716 last_lop = oldbufptr;
a0d0e21e 2717 last_lop_op = OP_ENTERSUB;
89bfa8cd 2718 /* Check for a constant sub */
46fc3d4c 2719 cv = GvCV(gv);
96e4d5b1 2720 if ((sv = cv_const_sv(cv))) {
2721 its_constant:
2722 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2723 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2724 yylval.opval->op_private = 0;
2725 TOKEN(WORD);
89bfa8cd 2726 }
2727
a5f75d66
AD		 2728 /* Resolve to GV now. */
2729 op_free(yylval.opval);
2730 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2731 /* Is there a prototype? */
2732 if (SvPOK(cv)) {
2733 STRLEN len;
2734 char *proto = SvPV((SV*)cv, len);
2735 if (!len)
2736 TERM(FUNC0SUB);
2737 if (strEQ(proto, "$"))
2738 OPERATOR(UNIOPSUB);
2739 if (*proto == '&' && *s == '{') {
2740 sv_setpv(subname,"__ANON__");
2741 PREBLOCK(LSTOPSUB);
2742 }
2743 }
a5f75d66 2744 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2745 expect = XTERM;
2746 force_next(WORD);
2747 TOKEN(NOAMP);
2748 }
748a9306
LW		 2749
2750 if (hints & HINT_STRICT_SUBS &&
2751 lastchar != '-' &&
a0d0e21e 2752 strnNE(s,"->",2) &&
9b01e405 2753 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2754 last_lop_op != OP_ACCEPT &&
2755 last_lop_op != OP_PIPE_OP &&
2756 last_lop_op != OP_SOCKPAIR)
2757 {
2758 warn(
2759 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2760 tokenbuf);
2761 ++error_count;
2762 }
8990e307
LW		 2763
2764 /* Call it a bare word */
2765
748a9306
LW		 2766 bareword:
2767 if (dowarn) {
2768 if (lastchar != '-') {
2769 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2770 if (!*d)
2771 warn(warn_reserved, tokenbuf);
2772 }
2773 }
2774 if (lastchar && strchr("*%&", lastchar)) {
2775 warn("Operator or semicolon missing before %c%s",
2776 lastchar, tokenbuf);
c2960299 2777 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2778 lastchar, lastchar);
2779 }
93a17b20 2780 TOKEN(WORD);
79072805 2781 }
79072805 2782
68dc0745 2783 case KEY___FILE__:
46fc3d4c 2784 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2785 newSVsv(GvSV(curcop->cop_filegv)));
2786 TERM(THING);
2787
79072805 2788 case KEY___LINE__:
46fc3d4c 2789 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2790 newSVpvf("%ld", (long)curcop->cop_line));
79072805 2791 TERM(THING);
68dc0745 2792
2793 case KEY___PACKAGE__:
2794 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2795 (curstash
2796 ? newSVsv(curstname)
2797 : &sv_undef));
79072805 2798 TERM(THING);
79072805 2799
e50aee73 2800 case KEY___DATA__:
79072805
LW		 2801 case KEY___END__: {
2802 GV *gv;
79072805
LW		 2803
2804 /*SUPPRESS 560*/
a5f75d66 2805 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2806 char *pname = "main";
2807 if (tokenbuf[2] == 'D')
2808 pname = HvNAME(curstash ? curstash : defstash);
46fc3d4c 2809 gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO);
a5f75d66 2810 GvMULTI_on(gv);
79072805 2811 if (!GvIO(gv))
a0d0e21e
LW		 2812 GvIOp(gv) = newIO();
2813 IoIFP(GvIOp(gv)) = rsfp;
2814#if defined(HAS_FCNTL) && defined(F_SETFD)
2815 {
760ac839 2816 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2817 fcntl(fd,F_SETFD,fd >= 3);
2818 }
79072805 2819#endif
fd049845 2820 /* Mark this internal pseudo-handle as clean */
2821 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2822 if (preprocess)
a0d0e21e 2823 IoTYPE(GvIOp(gv)) = '|';
760ac839 2824 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2825 IoTYPE(GvIOp(gv)) = '-';
79072805 2826 else
a0d0e21e 2827 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2828 rsfp = Nullfp;
2829 }
2830 goto fake_eof;
e929a76b 2831 }
de3bb511 2832
8990e307 2833 case KEY_AUTOLOAD:
ed6116ce 2834 case KEY_DESTROY:
79072805
LW		 2835 case KEY_BEGIN:
2836 case KEY_END:
7d07dbc2 2837 case KEY_INIT:
a0d0e21e 2838 if (expect == XSTATE) {
93a17b20
LW		 2839 s = bufptr;
2840 goto really_sub;
79072805
LW		 2841 }
2842 goto just_a_word;
2843
a0d0e21e
LW		 2844 case KEY_CORE:
2845 if (*s == ':' && s[1] == ':') {
2846 s += 2;
748a9306 2847 d = s;
8903cb82 2848 s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len);
a0d0e21e
LW		 2849 tmp = keyword(tokenbuf, len);
2850 if (tmp < 0)
2851 tmp = -tmp;
2852 goto reserved_word;
2853 }
2854 goto just_a_word;
2855
463ee0b2
LW		 2856 case KEY_abs:
2857 UNI(OP_ABS);
2858
79072805
LW		 2859 case KEY_alarm:
2860 UNI(OP_ALARM);
2861
2862 case KEY_accept:
a0d0e21e 2863 LOP(OP_ACCEPT,XTERM);
79072805 2864
463ee0b2
LW		 2865 case KEY_and:
2866 OPERATOR(ANDOP);
2867
79072805 2868 case KEY_atan2:
a0d0e21e 2869 LOP(OP_ATAN2,XTERM);
85e6fe83 2870
79072805 2871 case KEY_bind:
a0d0e21e 2872 LOP(OP_BIND,XTERM);
79072805
LW		 2873
2874 case KEY_binmode:
2875 UNI(OP_BINMODE);
2876
2877 case KEY_bless:
a0d0e21e 2878 LOP(OP_BLESS,XTERM);
79072805
LW		 2879
2880 case KEY_chop:
2881 UNI(OP_CHOP);
2882
2883 case KEY_continue:
2884 PREBLOCK(CONTINUE);
2885
2886 case KEY_chdir:
85e6fe83 2887 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2888 UNI(OP_CHDIR);
2889
2890 case KEY_close:
2891 UNI(OP_CLOSE);
2892
2893 case KEY_closedir:
2894 UNI(OP_CLOSEDIR);
2895
2896 case KEY_cmp:
2897 Eop(OP_SCMP);
2898
2899 case KEY_caller:
2900 UNI(OP_CALLER);
2901
2902 case KEY_crypt:
2903#ifdef FCRYPT
de3bb511
LW		 2904 if (!cryptseen++)
2905 init_des();
a687059c 2906#endif
a0d0e21e 2907 LOP(OP_CRYPT,XTERM);
79072805
LW		 2908
2909 case KEY_chmod:
748a9306
LW		 2910 if (dowarn) {
2911 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2912 if (*d != '0' && isDIGIT(*d))
2913 yywarn("chmod: mode argument is missing initial 0");
2914 }
a0d0e21e 2915 LOP(OP_CHMOD,XTERM);
79072805
LW		 2916
2917 case KEY_chown:
a0d0e21e 2918 LOP(OP_CHOWN,XTERM);
79072805
LW		 2919
2920 case KEY_connect:
a0d0e21e 2921 LOP(OP_CONNECT,XTERM);
79072805 2922
463ee0b2
LW		 2923 case KEY_chr:
2924 UNI(OP_CHR);
2925
79072805
LW		 2926 case KEY_cos:
2927 UNI(OP_COS);
2928
2929 case KEY_chroot:
2930 UNI(OP_CHROOT);
2931
2932 case KEY_do:
2933 s = skipspace(s);
2934 if (*s == '{')
a0d0e21e 2935 PRETERMBLOCK(DO);
79072805 2936 if (*s != '\'')
a0d0e21e 2937 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2938 OPERATOR(DO);
79072805
LW		 2939
2940 case KEY_die:
a0d0e21e
LW		 2941 hints |= HINT_BLOCK_SCOPE;
2942 LOP(OP_DIE,XTERM);
79072805
LW		 2943
2944 case KEY_defined:
2945 UNI(OP_DEFINED);
2946
2947 case KEY_delete:
a0d0e21e 2948 UNI(OP_DELETE);
79072805
LW		 2949
2950 case KEY_dbmopen:
a0d0e21e
LW		 2951 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2952 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2953
2954 case KEY_dbmclose:
2955 UNI(OP_DBMCLOSE);
2956
2957 case KEY_dump:
a0d0e21e 2958 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2959 LOOPX(OP_DUMP);
2960
2961 case KEY_else:
2962 PREBLOCK(ELSE);
2963
2964 case KEY_elsif:
2965 yylval.ival = curcop->cop_line;
2966 OPERATOR(ELSIF);
2967
2968 case KEY_eq:
2969 Eop(OP_SEQ);
2970
a0d0e21e
LW		 2971 case KEY_exists:
2972 UNI(OP_EXISTS);
2973
79072805
LW		 2974 case KEY_exit:
2975 UNI(OP_EXIT);
2976
2977 case KEY_eval:
79072805 2978 s = skipspace(s);
a0d0e21e 2979 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2980 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2981
2982 case KEY_eof:
2983 UNI(OP_EOF);
2984
2985 case KEY_exp:
2986 UNI(OP_EXP);
2987
2988 case KEY_each:
2989 UNI(OP_EACH);
2990
2991 case KEY_exec:
2992 set_csh();
a0d0e21e 2993 LOP(OP_EXEC,XREF);
79072805
LW		 2994
2995 case KEY_endhostent:
2996 FUN0(OP_EHOSTENT);
2997
2998 case KEY_endnetent:
2999 FUN0(OP_ENETENT);
3000
3001 case KEY_endservent:
3002 FUN0(OP_ESERVENT);
3003
3004 case KEY_endprotoent:
3005 FUN0(OP_EPROTOENT);
3006
3007 case KEY_endpwent:
3008 FUN0(OP_EPWENT);
3009
3010 case KEY_endgrent:
3011 FUN0(OP_EGRENT);
3012
3013 case KEY_for:
3014 case KEY_foreach:
3015 yylval.ival = curcop->cop_line;
55497cff 3016 s = skipspace(s);
3017 if (isIDFIRST(*s)) {
3018 char *p = s;
3019 if ((bufend - p) >= 3 &&
3020 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
3021 p += 2;
3022 p = skipspace(p);
3023 if (isIDFIRST(*p))
3024 croak("Missing $ on loop variable");
3025 }
79072805
LW		 3026 OPERATOR(FOR);
3027
3028 case KEY_formline:
a0d0e21e 3029 LOP(OP_FORMLINE,XTERM);
79072805
LW		 3030
3031 case KEY_fork:
3032 FUN0(OP_FORK);
3033
3034 case KEY_fcntl:
a0d0e21e 3035 LOP(OP_FCNTL,XTERM);
79072805
LW		 3036
3037 case KEY_fileno:
3038 UNI(OP_FILENO);
3039
3040 case KEY_flock:
a0d0e21e 3041 LOP(OP_FLOCK,XTERM);
79072805
LW		 3042
3043 case KEY_gt:
3044 Rop(OP_SGT);
3045
3046 case KEY_ge:
3047 Rop(OP_SGE);
3048
3049 case KEY_grep:
a0d0e21e 3050 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 3051
3052 case KEY_goto:
a0d0e21e 3053 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3054 LOOPX(OP_GOTO);
3055
3056 case KEY_gmtime:
3057 UNI(OP_GMTIME);
3058
3059 case KEY_getc:
3060 UNI(OP_GETC);
3061
3062 case KEY_getppid:
3063 FUN0(OP_GETPPID);
3064
3065 case KEY_getpgrp:
3066 UNI(OP_GETPGRP);
3067
3068 case KEY_getpriority:
a0d0e21e 3069 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 3070
3071 case KEY_getprotobyname:
3072 UNI(OP_GPBYNAME);
3073
3074 case KEY_getprotobynumber:
a0d0e21e 3075 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 3076
3077 case KEY_getprotoent:
3078 FUN0(OP_GPROTOENT);
3079
3080 case KEY_getpwent:
3081 FUN0(OP_GPWENT);
3082
3083 case KEY_getpwnam:
ff68c719 3084 UNI(OP_GPWNAM);
79072805
LW		 3085
3086 case KEY_getpwuid:
ff68c719 3087 UNI(OP_GPWUID);
79072805
LW		 3088
3089 case KEY_getpeername:
3090 UNI(OP_GETPEERNAME);
3091
3092 case KEY_gethostbyname:
3093 UNI(OP_GHBYNAME);
3094
3095 case KEY_gethostbyaddr:
a0d0e21e 3096 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 3097
3098 case KEY_gethostent:
3099 FUN0(OP_GHOSTENT);
3100
3101 case KEY_getnetbyname:
3102 UNI(OP_GNBYNAME);
3103
3104 case KEY_getnetbyaddr:
a0d0e21e 3105 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 3106
3107 case KEY_getnetent:
3108 FUN0(OP_GNETENT);
3109
3110 case KEY_getservbyname:
a0d0e21e 3111 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 3112
3113 case KEY_getservbyport:
a0d0e21e 3114 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 3115
3116 case KEY_getservent:
3117 FUN0(OP_GSERVENT);
3118
3119 case KEY_getsockname:
3120 UNI(OP_GETSOCKNAME);
3121
3122 case KEY_getsockopt:
a0d0e21e 3123 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 3124
3125 case KEY_getgrent:
3126 FUN0(OP_GGRENT);
3127
3128 case KEY_getgrnam:
ff68c719 3129 UNI(OP_GGRNAM);
79072805
LW		 3130
3131 case KEY_getgrgid:
ff68c719 3132 UNI(OP_GGRGID);
79072805
LW		 3133
3134 case KEY_getlogin:
3135 FUN0(OP_GETLOGIN);
3136
93a17b20 3137 case KEY_glob:
a0d0e21e
LW		 3138 set_csh();
3139 LOP(OP_GLOB,XTERM);
93a17b20 3140
79072805
LW		 3141 case KEY_hex:
3142 UNI(OP_HEX);
3143
3144 case KEY_if:
3145 yylval.ival = curcop->cop_line;
3146 OPERATOR(IF);
3147
3148 case KEY_index:
a0d0e21e 3149 LOP(OP_INDEX,XTERM);
79072805
LW		 3150
3151 case KEY_int:
3152 UNI(OP_INT);
3153
3154 case KEY_ioctl:
a0d0e21e 3155 LOP(OP_IOCTL,XTERM);
79072805
LW		 3156
3157 case KEY_join:
a0d0e21e 3158 LOP(OP_JOIN,XTERM);
79072805
LW		 3159
3160 case KEY_keys:
3161 UNI(OP_KEYS);
3162
3163 case KEY_kill:
a0d0e21e 3164 LOP(OP_KILL,XTERM);
79072805
LW		 3165
3166 case KEY_last:
a0d0e21e 3167 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 3168 LOOPX(OP_LAST);
a0d0e21e 3169
79072805
LW		 3170 case KEY_lc:
3171 UNI(OP_LC);
3172
3173 case KEY_lcfirst:
3174 UNI(OP_LCFIRST);
3175
3176 case KEY_local:
3177 OPERATOR(LOCAL);
3178
3179 case KEY_length:
3180 UNI(OP_LENGTH);
3181
3182 case KEY_lt:
3183 Rop(OP_SLT);
3184
3185 case KEY_le:
3186 Rop(OP_SLE);
3187
3188 case KEY_localtime:
3189 UNI(OP_LOCALTIME);
3190
3191 case KEY_log:
3192 UNI(OP_LOG);
3193
3194 case KEY_link:
a0d0e21e 3195 LOP(OP_LINK,XTERM);
79072805
LW		 3196
3197 case KEY_listen:
a0d0e21e 3198 LOP(OP_LISTEN,XTERM);
79072805 3199
c0329465
MB		 3200 case KEY_lock:
3201 UNI(OP_LOCK);
3202
79072805
LW		 3203 case KEY_lstat:
3204 UNI(OP_LSTAT);
3205
3206 case KEY_m:
3207 s = scan_pat(s);
3208 TERM(sublex_start());
3209
a0d0e21e
LW		 3210 case KEY_map:
3211 LOP(OP_MAPSTART,XREF);
3212
79072805 3213 case KEY_mkdir:
a0d0e21e 3214 LOP(OP_MKDIR,XTERM);
79072805
LW		 3215
3216 case KEY_msgctl:
a0d0e21e 3217 LOP(OP_MSGCTL,XTERM);
79072805
LW		 3218
3219 case KEY_msgget:
a0d0e21e 3220 LOP(OP_MSGGET,XTERM);
79072805
LW		 3221
3222 case KEY_msgrcv:
a0d0e21e 3223 LOP(OP_MSGRCV,XTERM);
79072805
LW		 3224
3225 case KEY_msgsnd:
a0d0e21e 3226 LOP(OP_MSGSND,XTERM);
79072805 3227
93a17b20
LW		 3228 case KEY_my:
3229 in_my = TRUE;
c750a3ec
MB		 3230 s = skipspace(s);
3231 if (isIDFIRST(*s)) {
97fcbf96 3232 s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len);
c750a3ec
MB		 3233 in_my_stash = gv_stashpv(tokenbuf, FALSE);
3234 if (!in_my_stash) {
3235 char tmpbuf[1024];
3236 bufptr = s;
3237 sprintf(tmpbuf, "No such class %.1000s", tokenbuf);
3238 yyerror(tmpbuf);
3239 }
3240 }
55497cff 3241 OPERATOR(MY);
93a17b20 3242
79072805 3243 case KEY_next:
a0d0e21e 3244 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3245 LOOPX(OP_NEXT);
3246
3247 case KEY_ne:
3248 Eop(OP_SNE);
3249
a0d0e21e
LW		 3250 case KEY_no:
3251 if (expect != XSTATE)
3252 yyerror("\"no\" not allowed in expression");
3253 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3254 s = force_version(s);
a0d0e21e
LW		 3255 yylval.ival = 0;
3256 OPERATOR(USE);
3257
3258 case KEY_not:
3259 OPERATOR(NOTOP);
3260
79072805 3261 case KEY_open:
93a17b20
LW		 3262 s = skipspace(s);
3263 if (isIDFIRST(*s)) {
3264 char *t;
3265 for (d = s; isALNUM(*d); d++) ;
3266 t = skipspace(d);
3267 if (strchr("|&*+-=!?:.", *t))
3268 warn("Precedence problem: open %.*s should be open(%.*s)",
3269 d-s,s, d-s,s);
3270 }
a0d0e21e 3271 LOP(OP_OPEN,XTERM);
79072805 3272
463ee0b2 3273 case KEY_or:
a0d0e21e 3274 yylval.ival = OP_OR;
463ee0b2
LW		 3275 OPERATOR(OROP);
3276
79072805
LW		 3277 case KEY_ord:
3278 UNI(OP_ORD);
3279
3280 case KEY_oct:
3281 UNI(OP_OCT);
3282
3283 case KEY_opendir:
a0d0e21e 3284 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3285
3286 case KEY_print:
3287 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3288 LOP(OP_PRINT,XREF);
79072805
LW		 3289
3290 case KEY_printf:
3291 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3292 LOP(OP_PRTF,XREF);
79072805 3293
c07a80fd 3294 case KEY_prototype:
3295 UNI(OP_PROTOTYPE);
3296
79072805 3297 case KEY_push:
a0d0e21e 3298 LOP(OP_PUSH,XTERM);
79072805
LW		 3299
3300 case KEY_pop:
3301 UNI(OP_POP);
3302
a0d0e21e
LW		 3303 case KEY_pos:
3304 UNI(OP_POS);
3305
79072805 3306 case KEY_pack:
a0d0e21e 3307 LOP(OP_PACK,XTERM);
79072805
LW		 3308
3309 case KEY_package:
a0d0e21e 3310 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3311 OPERATOR(PACKAGE);
3312
3313 case KEY_pipe:
a0d0e21e 3314 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3315
3316 case KEY_q:
3317 s = scan_str(s);
3318 if (!s)
85e6fe83 3319 missingterm((char*)0);
79072805
LW		 3320 yylval.ival = OP_CONST;
3321 TERM(sublex_start());
3322
a0d0e21e
LW		 3323 case KEY_quotemeta:
3324 UNI(OP_QUOTEMETA);
3325
8990e307
LW		 3326 case KEY_qw:
3327 s = scan_str(s);
3328 if (!s)
85e6fe83 3329 missingterm((char*)0);
55497cff 3330 if (dowarn && SvLEN(lex_stuff)) {
3331 d = SvPV_force(lex_stuff, len);
3332 for (; len; --len, ++d) {
3333 if (*d == ',') {
3334 warn("Possible attempt to separate words with commas");
3335 break;
3336 }
3337 if (*d == '#') {
3338 warn("Possible attempt to put comments in qw() list");
3339 break;
3340 }
3341 }
3342 }
8990e307
LW		 3343 force_next(')');
3344 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3345 lex_stuff = Nullsv;
3346 force_next(THING);
3347 force_next(',');
3348 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3349 force_next(THING);
3350 force_next('(');
a0d0e21e
LW		 3351 yylval.ival = OP_SPLIT;
3352 CLINE;
3353 expect = XTERM;
3354 bufptr = s;
3355 last_lop = oldbufptr;
3356 last_lop_op = OP_SPLIT;
3357 return FUNC;
8990e307 3358
79072805
LW		 3359 case KEY_qq:
3360 s = scan_str(s);
3361 if (!s)
85e6fe83 3362 missingterm((char*)0);
a0d0e21e 3363 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3364 if (SvIVX(lex_stuff) == '\'')
3365 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3366 TERM(sublex_start());
3367
3368 case KEY_qx:
3369 s = scan_str(s);
3370 if (!s)
85e6fe83 3371 missingterm((char*)0);
79072805
LW		 3372 yylval.ival = OP_BACKTICK;
3373 set_csh();
3374 TERM(sublex_start());
3375
3376 case KEY_return:
3377 OLDLOP(OP_RETURN);
3378
3379 case KEY_require:
748a9306 3380 *tokenbuf = '\0';
a0d0e21e 3381 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3382 if (isIDFIRST(*tokenbuf))
89bfa8cd 3383 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3384 else if (*s == '<')
a0d0e21e 3385 yyerror("<> should be quotes");
463ee0b2 3386 UNI(OP_REQUIRE);
79072805
LW		 3387
3388 case KEY_reset:
3389 UNI(OP_RESET);
3390
3391 case KEY_redo:
a0d0e21e 3392 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3393 LOOPX(OP_REDO);
3394
3395 case KEY_rename:
a0d0e21e 3396 LOP(OP_RENAME,XTERM);
79072805
LW		 3397
3398 case KEY_rand:
3399 UNI(OP_RAND);
3400
3401 case KEY_rmdir:
3402 UNI(OP_RMDIR);
3403
3404 case KEY_rindex:
a0d0e21e 3405 LOP(OP_RINDEX,XTERM);
79072805
LW		 3406
3407 case KEY_read:
a0d0e21e 3408 LOP(OP_READ,XTERM);
79072805
LW		 3409
3410 case KEY_readdir:
3411 UNI(OP_READDIR);
3412
93a17b20
LW		 3413 case KEY_readline:
3414 set_csh();
3415 UNI(OP_READLINE);
3416
3417 case KEY_readpipe:
3418 set_csh();
3419 UNI(OP_BACKTICK);
3420
79072805
LW		 3421 case KEY_rewinddir:
3422 UNI(OP_REWINDDIR);
3423
3424 case KEY_recv:
a0d0e21e 3425 LOP(OP_RECV,XTERM);
79072805
LW		 3426
3427 case KEY_reverse:
a0d0e21e 3428 LOP(OP_REVERSE,XTERM);
79072805
LW		 3429
3430 case KEY_readlink:
3431 UNI(OP_READLINK);
3432
3433 case KEY_ref:
3434 UNI(OP_REF);
3435
3436 case KEY_s:
3437 s = scan_subst(s);
3438 if (yylval.opval)
3439 TERM(sublex_start());
3440 else
3441 TOKEN(1); /* force error */
3442
a0d0e21e
LW		 3443 case KEY_chomp:
3444 UNI(OP_CHOMP);
3445
79072805
LW		 3446 case KEY_scalar:
3447 UNI(OP_SCALAR);
3448
3449 case KEY_select:
a0d0e21e 3450 LOP(OP_SELECT,XTERM);
79072805
LW		 3451
3452 case KEY_seek:
a0d0e21e 3453 LOP(OP_SEEK,XTERM);
79072805
LW		 3454
3455 case KEY_semctl:
a0d0e21e 3456 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3457
3458 case KEY_semget:
a0d0e21e 3459 LOP(OP_SEMGET,XTERM);
79072805
LW		 3460
3461 case KEY_semop:
a0d0e21e 3462 LOP(OP_SEMOP,XTERM);
79072805
LW		 3463
3464 case KEY_send:
a0d0e21e 3465 LOP(OP_SEND,XTERM);
79072805
LW		 3466
3467 case KEY_setpgrp:
a0d0e21e 3468 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3469
3470 case KEY_setpriority:
a0d0e21e 3471 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3472
3473 case KEY_sethostent:
ff68c719 3474 UNI(OP_SHOSTENT);
79072805
LW		 3475
3476 case KEY_setnetent:
ff68c719 3477 UNI(OP_SNETENT);
79072805
LW		 3478
3479 case KEY_setservent:
ff68c719 3480 UNI(OP_SSERVENT);
79072805
LW		 3481
3482 case KEY_setprotoent:
ff68c719 3483 UNI(OP_SPROTOENT);
79072805
LW		 3484
3485 case KEY_setpwent:
3486 FUN0(OP_SPWENT);
3487
3488 case KEY_setgrent:
3489 FUN0(OP_SGRENT);
3490
3491 case KEY_seekdir:
a0d0e21e 3492 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3493
3494 case KEY_setsockopt:
a0d0e21e 3495 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3496
3497 case KEY_shift:
3498 UNI(OP_SHIFT);
3499
3500 case KEY_shmctl:
a0d0e21e 3501 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3502
3503 case KEY_shmget:
a0d0e21e 3504 LOP(OP_SHMGET,XTERM);
79072805
LW		 3505
3506 case KEY_shmread:
a0d0e21e 3507 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3508
3509 case KEY_shmwrite:
a0d0e21e 3510 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3511
3512 case KEY_shutdown:
a0d0e21e 3513 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3514
3515 case KEY_sin:
3516 UNI(OP_SIN);
3517
3518 case KEY_sleep:
3519 UNI(OP_SLEEP);
3520
3521 case KEY_socket:
a0d0e21e 3522 LOP(OP_SOCKET,XTERM);
79072805
LW		 3523
3524 case KEY_socketpair:
a0d0e21e 3525 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3526
3527 case KEY_sort:
3528 checkcomma(s,tokenbuf,"subroutine name");
3529 s = skipspace(s);
3530 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3531 croak("sort is now a reserved word");
3532 expect = XTERM;
a0d0e21e
LW		 3533 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3534 LOP(OP_SORT,XREF);
79072805
LW		 3535
3536 case KEY_split:
a0d0e21e 3537 LOP(OP_SPLIT,XTERM);
79072805
LW		 3538
3539 case KEY_sprintf:
a0d0e21e 3540 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3541
3542 case KEY_splice:
a0d0e21e 3543 LOP(OP_SPLICE,XTERM);
79072805
LW		 3544
3545 case KEY_sqrt:
3546 UNI(OP_SQRT);
3547
3548 case KEY_srand:
3549 UNI(OP_SRAND);
3550
3551 case KEY_stat:
3552 UNI(OP_STAT);
3553
3554 case KEY_study:
3555 sawstudy++;
3556 UNI(OP_STUDY);
3557
3558 case KEY_substr:
a0d0e21e 3559 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3560
3561 case KEY_format:
3562 case KEY_sub:
93a17b20 3563 really_sub:
79072805 3564 s = skipspace(s);
4633a7c4 3565
463ee0b2 3566 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
8903cb82 3567 char tmpbuf[sizeof tokenbuf];
4633a7c4 3568 expect = XBLOCK;
8903cb82 3569 d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len);
463ee0b2
LW		 3570 if (strchr(tmpbuf, ':'))
3571 sv_setpv(subname, tmpbuf);
3572 else {
3573 sv_setsv(subname,curstname);
8990e307 3574 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3575 sv_catpvn(subname,tmpbuf,len);
3576 }
a0d0e21e 3577 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3578 s = skipspace(s);
79072805 3579 }
4633a7c4
LW		 3580 else {
3581 expect = XTERMBLOCK;
79072805 3582 sv_setpv(subname,"?");
4633a7c4
LW		 3583 }
3584
3585 if (tmp == KEY_format) {
3586 s = skipspace(s);
3587 if (*s == '=')
3588 lex_formbrack = lex_brackets + 1;
3589 OPERATOR(FORMAT);
3590 }
79072805 3591
4633a7c4
LW		 3592 /* Look for a prototype */
3593 if (*s == '(') {
68dc0745 3594 char *p;
3595
4633a7c4
LW		 3596 s = scan_str(s);
3597 if (!s) {
3598 if (lex_stuff)
3599 SvREFCNT_dec(lex_stuff);
3600 lex_stuff = Nullsv;
3601 croak("Prototype not terminated");
3602 }
68dc0745 3603 /* strip spaces */
3604 d = SvPVX(lex_stuff);
3605 tmp = 0;
3606 for (p = d; *p; ++p) {
3607 if (!isSPACE(*p))
3608 d[tmp++] = *p;
3609 }
3610 d[tmp] = '\0';
3611 SvCUR(lex_stuff) = tmp;
3612
4633a7c4
LW		 3613 nexttoke++;
3614 nextval[1] = nextval[0];
3615 nexttype[1] = nexttype[0];
3616 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3617 nexttype[0] = THING;
3618 if (nexttoke == 1) {
3619 lex_defer = lex_state;
3620 lex_expect = expect;
3621 lex_state = LEX_KNOWNEXT;
3622 }
3623 lex_stuff = Nullsv;
3624 }
79072805 3625
4633a7c4
LW		 3626 if (*SvPV(subname,na) == '?') {
3627 sv_setpv(subname,"__ANON__");
3628 TOKEN(ANONSUB);
3629 }
3630 PREBLOCK(SUB);
79072805
LW		 3631
3632 case KEY_system:
3633 set_csh();
a0d0e21e 3634 LOP(OP_SYSTEM,XREF);
79072805
LW		 3635
3636 case KEY_symlink:
a0d0e21e 3637 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3638
3639 case KEY_syscall:
a0d0e21e 3640 LOP(OP_SYSCALL,XTERM);
79072805 3641
c07a80fd 3642 case KEY_sysopen:
3643 LOP(OP_SYSOPEN,XTERM);
3644
137443ea 3645 case KEY_sysseek:
3646 LOP(OP_SYSSEEK,XTERM);
3647
79072805 3648 case KEY_sysread:
a0d0e21e 3649 LOP(OP_SYSREAD,XTERM);
79072805
LW		 3650
3651 case KEY_syswrite:
a0d0e21e 3652 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3653
3654 case KEY_tr:
3655 s = scan_trans(s);
3656 TERM(sublex_start());
3657
3658 case KEY_tell:
3659 UNI(OP_TELL);
3660
3661 case KEY_telldir:
3662 UNI(OP_TELLDIR);
3663
463ee0b2 3664 case KEY_tie:
a0d0e21e 3665 LOP(OP_TIE,XTERM);
463ee0b2 3666
c07a80fd 3667 case KEY_tied:
3668 UNI(OP_TIED);
3669
79072805
LW		 3670 case KEY_time:
3671 FUN0(OP_TIME);
3672
3673 case KEY_times:
3674 FUN0(OP_TMS);
3675
3676 case KEY_truncate:
a0d0e21e 3677 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3678
3679 case KEY_uc:
3680 UNI(OP_UC);
3681
3682 case KEY_ucfirst:
3683 UNI(OP_UCFIRST);
3684
463ee0b2
LW		 3685 case KEY_untie:
3686 UNI(OP_UNTIE);
3687
79072805
LW		 3688 case KEY_until:
3689 yylval.ival = curcop->cop_line;
3690 OPERATOR(UNTIL);
3691
3692 case KEY_unless:
3693 yylval.ival = curcop->cop_line;
3694 OPERATOR(UNLESS);
3695
3696 case KEY_unlink:
a0d0e21e 3697 LOP(OP_UNLINK,XTERM);
79072805
LW		 3698
3699 case KEY_undef:
3700 UNI(OP_UNDEF);
3701
3702 case KEY_unpack:
a0d0e21e 3703 LOP(OP_UNPACK,XTERM);
79072805
LW		 3704
3705 case KEY_utime:
a0d0e21e 3706 LOP(OP_UTIME,XTERM);
79072805
LW		 3707
3708 case KEY_umask:
748a9306
LW		 3709 if (dowarn) {
3710 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3711 if (*d != '0' && isDIGIT(*d))
3712 yywarn("umask: argument is missing initial 0");
3713 }
79072805
LW		 3714 UNI(OP_UMASK);
3715
3716 case KEY_unshift:
a0d0e21e
LW		 3717 LOP(OP_UNSHIFT,XTERM);
3718
3719 case KEY_use:
3720 if (expect != XSTATE)
3721 yyerror("\"use\" not allowed in expression");
89bfa8cd 3722 s = skipspace(s);
3723 if(isDIGIT(*s)) {
3724 s = force_version(s);
3725 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3726 nextval[nexttoke].opval = Nullop;
3727 force_next(WORD);
3728 }
3729 }
3730 else {
3731 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3732 s = force_version(s);
3733 }
a0d0e21e
LW		 3734 yylval.ival = 1;
3735 OPERATOR(USE);
79072805
LW		 3736
3737 case KEY_values:
3738 UNI(OP_VALUES);
3739
3740 case KEY_vec:
3741 sawvec = TRUE;
a0d0e21e 3742 LOP(OP_VEC,XTERM);
79072805
LW		 3743
3744 case KEY_while:
3745 yylval.ival = curcop->cop_line;
3746 OPERATOR(WHILE);
3747
3748 case KEY_warn:
a0d0e21e
LW		 3749 hints |= HINT_BLOCK_SCOPE;
3750 LOP(OP_WARN,XTERM);
79072805
LW		 3751
3752 case KEY_wait:
3753 FUN0(OP_WAIT);
3754
3755 case KEY_waitpid:
a0d0e21e 3756 LOP(OP_WAITPID,XTERM);
79072805
LW		 3757
3758 case KEY_wantarray:
3759 FUN0(OP_WANTARRAY);
3760
3761 case KEY_write:
85e6fe83 3762 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3763 UNI(OP_ENTERWRITE);
3764
3765 case KEY_x:
3766 if (expect == XOPERATOR)
3767 Mop(OP_REPEAT);
3768 check_uni();
3769 goto just_a_word;
3770
a0d0e21e
LW		 3771 case KEY_xor:
3772 yylval.ival = OP_XOR;
3773 OPERATOR(OROP);
3774
79072805
LW		 3775 case KEY_y:
3776 s = scan_trans(s);
3777 TERM(sublex_start());
3778 }
3779 }
3780}
3781
3782I32
3783keyword(d, len)
3784register char *d;
3785I32 len;
3786{
3787 switch (*d) {
3788 case '_':
3789 if (d[1] == '_') {
a0d0e21e 3790 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
68dc0745 3791 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3792 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
e50aee73 3793 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3794 if (strEQ(d,"__END__")) return KEY___END__;
3795 }
3796 break;
8990e307
LW		 3797 case 'A':
3798 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3799 break;
79072805 3800 case 'a':
463ee0b2
LW		 3801 switch (len) {
3802 case 3:
a0d0e21e
LW		 3803 if (strEQ(d,"and")) return -KEY_and;
3804 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3805 break;
463ee0b2 3806 case 5:
a0d0e21e
LW		 3807 if (strEQ(d,"alarm")) return -KEY_alarm;
3808 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3809 break;
3810 case 6:
a0d0e21e 3811 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3812 break;
3813 }
79072805
LW		 3814 break;
3815 case 'B':
3816 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3817 break;
79072805 3818 case 'b':
a0d0e21e
LW		 3819 if (strEQ(d,"bless")) return -KEY_bless;
3820 if (strEQ(d,"bind")) return -KEY_bind;
3821 if (strEQ(d,"binmode")) return -KEY_binmode;
3822 break;
3823 case 'C':
3824 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3825 break;
3826 case 'c':
3827 switch (len) {
3828 case 3:
a0d0e21e
LW		 3829 if (strEQ(d,"cmp")) return -KEY_cmp;
3830 if (strEQ(d,"chr")) return -KEY_chr;
3831 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3832 break;
3833 case 4:
3834 if (strEQ(d,"chop")) return KEY_chop;
3835 break;
3836 case 5:
a0d0e21e
LW		 3837 if (strEQ(d,"close")) return -KEY_close;
3838 if (strEQ(d,"chdir")) return -KEY_chdir;
3839 if (strEQ(d,"chomp")) return KEY_chomp;
3840 if (strEQ(d,"chmod")) return -KEY_chmod;
3841 if (strEQ(d,"chown")) return -KEY_chown;
3842 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3843 break;
3844 case 6:
a0d0e21e
LW		 3845 if (strEQ(d,"chroot")) return -KEY_chroot;
3846 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3847 break;
3848 case 7:
a0d0e21e 3849 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3850 break;
3851 case 8:
a0d0e21e
LW		 3852 if (strEQ(d,"closedir")) return -KEY_closedir;
3853 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3854 break;
3855 }
3856 break;
ed6116ce
LW		 3857 case 'D':
3858 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3859 break;
79072805
LW		 3860 case 'd':
3861 switch (len) {
3862 case 2:
3863 if (strEQ(d,"do")) return KEY_do;
3864 break;
3865 case 3:
a0d0e21e 3866 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3867 break;
3868 case 4:
a0d0e21e 3869 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3870 break;
3871 case 6:
3872 if (strEQ(d,"delete")) return KEY_delete;
3873 break;
3874 case 7:
3875 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3876 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3877 break;
3878 case 8:
a0d0e21e 3879 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3880 break;
3881 }
3882 break;
3883 case 'E':
a0d0e21e 3884 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3885 if (strEQ(d,"END")) return KEY_END;
3886 break;
3887 case 'e':
3888 switch (len) {
3889 case 2:
a0d0e21e 3890 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3891 break;
3892 case 3:
a0d0e21e
LW		 3893 if (strEQ(d,"eof")) return -KEY_eof;
3894 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3895 break;
3896 case 4:
3897 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3898 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3899 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3900 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3901 if (strEQ(d,"each")) return KEY_each;
3902 break;
3903 case 5:
3904 if (strEQ(d,"elsif")) return KEY_elsif;
3905 break;
a0d0e21e
LW		 3906 case 6:
3907 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3908 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3909 break;
79072805 3910 case 8:
a0d0e21e
LW		 3911 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3912 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3913 break;
3914 case 9:
a0d0e21e 3915 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3916 break;
3917 case 10:
a0d0e21e
LW		 3918 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3919 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3920 break;
3921 case 11:
a0d0e21e 3922 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3923 break;
a687059c 3924 }
a687059c 3925 break;
79072805
LW		 3926 case 'f':
3927 switch (len) {
3928 case 3:
3929 if (strEQ(d,"for")) return KEY_for;
3930 break;
3931 case 4:
a0d0e21e 3932 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3933 break;
3934 case 5:
a0d0e21e
LW		 3935 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3936 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3937 break;
3938 case 6:
3939 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3940 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3941 break;
3942 case 7:
3943 if (strEQ(d,"foreach")) return KEY_foreach;
3944 break;
3945 case 8:
a0d0e21e 3946 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3947 break;
378cc40b 3948 }
a687059c 3949 break;
79072805
LW		 3950 case 'G':
3951 if (len == 2) {
a0d0e21e
LW		 3952 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3953 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3954 }
a687059c 3955 break;
79072805 3956 case 'g':
a687059c
LW		 3957 if (strnEQ(d,"get",3)) {
3958 d += 3;
3959 if (*d == 'p') {
79072805
LW		 3960 switch (len) {
3961 case 7:
a0d0e21e
LW		 3962 if (strEQ(d,"ppid")) return -KEY_getppid;
3963 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3964 break;
3965 case 8:
a0d0e21e
LW		 3966 if (strEQ(d,"pwent")) return -KEY_getpwent;
3967 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3968 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3969 break;
3970 case 11:
a0d0e21e
LW		 3971 if (strEQ(d,"peername")) return -KEY_getpeername;
3972 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3973 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3974 break;
3975 case 14:
a0d0e21e 3976 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3977 break;
3978 case 16:
a0d0e21e 3979 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3980 break;
3981 }
a687059c
LW		 3982 }
3983 else if (*d == 'h') {
a0d0e21e
LW		 3984 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3985 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3986 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3987 }
3988 else if (*d == 'n') {
a0d0e21e
LW		 3989 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3990 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3991 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3992 }
3993 else if (*d == 's') {
a0d0e21e
LW		 3994 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3995 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3996 if (strEQ(d,"servent")) return -KEY_getservent;
3997 if (strEQ(d,"sockname")) return -KEY_getsockname;
3998 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3999 }
4000 else if (*d == 'g') {
a0d0e21e
LW		 4001 if (strEQ(d,"grent")) return -KEY_getgrent;
4002 if (strEQ(d,"grnam")) return -KEY_getgrnam;
4003 if (strEQ(d,"grgid")) return -KEY_getgrgid;
a687059c
LW		 4004 }
4005 else if (*d == 'l') {
a0d0e21e 4006 if (strEQ(d,"login")) return -KEY_getlogin;
a687059c 4007 }
a0d0e21e 4008 else if (strEQ(d,"c")) return -KEY_getc;
79072805 4009 break;
a687059c 4010 }
79072805
LW		 4011 switch (len) {
4012 case 2:
a0d0e21e
LW		 4013 if (strEQ(d,"gt")) return -KEY_gt;
4014 if (strEQ(d,"ge")) return -KEY_ge;
79072805
LW		 4015 break;
4016 case 4:
4017 if (strEQ(d,"grep")) return KEY_grep;
4018 if (strEQ(d,"goto")) return KEY_goto;
fb73857a 4019 if (strEQ(d,"glob")) return KEY_glob;
79072805
LW		 4020 break;
4021 case 6:
a0d0e21e 4022 if (strEQ(d,"gmtime")) return -KEY_gmtime;
79072805 4023 break;
378cc40b 4024 }
a687059c 4025 break;
79072805 4026 case 'h':
a0d0e21e 4027 if (strEQ(d,"hex")) return -KEY_hex;
a687059c 4028 break;
7d07dbc2
MB		 4029 case 'I':
4030 if (strEQ(d,"INIT")) return KEY_INIT;
4031 break;
79072805
LW		 4032 case 'i':
4033 switch (len) {
4034 case 2:
4035 if (strEQ(d,"if")) return KEY_if;
4036 break;
4037 case 3:
a0d0e21e 4038 if (strEQ(d,"int")) return -KEY_int;
79072805
LW		 4039 break;
4040 case 5:
a0d0e21e
LW		 4041 if (strEQ(d,"index")) return -KEY_index;
4042 if (strEQ(d,"ioctl")) return -KEY_ioctl;
79072805
LW		 4043 break;
4044 }
a687059c 4045 break;
79072805 4046 case 'j':
a0d0e21e 4047 if (strEQ(d,"join")) return -KEY_join;
a687059c 4048 break;
79072805
LW		 4049 case 'k':
4050 if (len == 4) {
4051 if (strEQ(d,"keys")) return KEY_keys;
a0d0e21e 4052 if (strEQ(d,"kill")) return -KEY_kill;
663a0e37 4053 }
79072805
LW		 4054 break;
4055 case 'L':
4056 if (len == 2) {
a0d0e21e
LW		 4057 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
4058 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
378cc40b 4059 }
79072805
LW		 4060 break;
4061 case 'l':
4062 switch (len) {
4063 case 2:
a0d0e21e
LW		 4064 if (strEQ(d,"lt")) return -KEY_lt;
4065 if (strEQ(d,"le")) return -KEY_le;
4066 if (strEQ(d,"lc")) return -KEY_lc;
79072805
LW		 4067 break;
4068 case 3:
a0d0e21e 4069 if (strEQ(d,"log")) return -KEY_log;
79072805
LW		 4070 break;
4071 case 4:
4072 if (strEQ(d,"last")) return KEY_last;
a0d0e21e 4073 if (strEQ(d,"link")) return -KEY_link;
c0329465 4074 if (strEQ(d,"lock")) return -KEY_lock;
395c3793 4075 break;
79072805
LW		 4076 case 5:
4077 if (strEQ(d,"local")) return KEY_local;
a0d0e21e 4078 if (strEQ(d,"lstat")) return -KEY_lstat;
79072805
LW		 4079 break;
4080 case 6:
a0d0e21e
LW		 4081 if (strEQ(d,"length")) return -KEY_length;
4082 if (strEQ(d,"listen")) return -KEY_listen;
79072805
LW		 4083 break;
4084 case 7:
a0d0e21e 4085 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
79072805
LW		 4086 break;
4087 case 9:
a0d0e21e 4088 if (strEQ(d,"localtime")) return -KEY_localtime;
395c3793
LW		 4089 break;
4090 }
a687059c 4091 break;
79072805
LW		 4092 case 'm':
4093 switch (len) {
4094 case 1: return KEY_m;
93a17b20
LW		 4095 case 2:
4096 if (strEQ(d,"my")) return KEY_my;
4097 break;
a0d0e21e
LW		 4098 case 3:
4099 if (strEQ(d,"map")) return KEY_map;
4100 break;
79072805 4101 case 5:
a0d0e21e 4102 if (strEQ(d,"mkdir")) return -KEY_mkdir;
79072805
LW		 4103 break;
4104 case 6:
a0d0e21e
LW		 4105 if (strEQ(d,"msgctl")) return -KEY_msgctl;
4106 if (strEQ(d,"msgget")) return -KEY_msgget;
4107 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
4108 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
79072805
LW		 4109 break;
4110 }
a687059c 4111 break;
79072805 4112 case 'N':
a0d0e21e 4113 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
a687059c 4114 break;
79072805
LW		 4115 case 'n':
4116 if (strEQ(d,"next")) return KEY_next;
a0d0e21e
LW		 4117 if (strEQ(d,"ne")) return -KEY_ne;
4118 if (strEQ(d,"not")) return -KEY_not;
4119 if (strEQ(d,"no")) return KEY_no;
a687059c 4120 break;
79072805
LW		 4121 case 'o':
4122 switch (len) {
463ee0b2 4123 case 2:
a0d0e21e 4124 if (strEQ(d,"or")) return -KEY_or;
463ee0b2 4125 break;
79072805 4126 case 3:
a0d0e21e
LW		 4127 if (strEQ(d,"ord")) return -KEY_ord;
4128 if (strEQ(d,"oct")) return -KEY_oct;
79072805
LW		 4129 break;
4130 case 4:
a0d0e21e 4131 if (strEQ(d,"open")) return -KEY_open;
79072805
LW		 4132 break;
4133 case 7:
a0d0e21e 4134 if (strEQ(d,"opendir")) return -KEY_opendir;
79072805 4135 break;
fe14fcc3 4136 }
a687059c 4137 break;
79072805
LW		 4138 case 'p':
4139 switch (len) {
4140 case 3:
4141 if (strEQ(d,"pop")) return KEY_pop;
a0d0e21e 4142 if (strEQ(d,"pos")) return KEY_pos;
79072805
LW		 4143 break;
4144 case 4:
4145 if (strEQ(d,"push")) return KEY_push;
a0d0e21e
LW		 4146 if (strEQ(d,"pack")) return -KEY_pack;
4147 if (strEQ(d,"pipe")) return -KEY_pipe;
79072805
LW		 4148 break;
4149 case 5:
4150 if (strEQ(d,"print")) return KEY_print;
4151 break;
4152 case 6:
4153 if (strEQ(d,"printf")) return KEY_printf;
4154 break;
4155 case 7:
4156 if (strEQ(d,"package")) return KEY_package;
4157 break;
c07a80fd 4158 case 9:
4159 if (strEQ(d,"prototype")) return KEY_prototype;
663a0e37 4160 }
79072805
LW		 4161 break;
4162 case 'q':
4163 if (len <= 2) {
4164 if (strEQ(d,"q")) return KEY_q;
4165 if (strEQ(d,"qq")) return KEY_qq;
8990e307 4166 if (strEQ(d,"qw")) return KEY_qw;
79072805 4167 if (strEQ(d,"qx")) return KEY_qx;
663a0e37 4168 }
a0d0e21e 4169 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
79072805
LW		 4170 break;
4171 case 'r':
4172 switch (len) {
4173 case 3:
a0d0e21e 4174 if (strEQ(d,"ref")) return -KEY_ref;
79072805
LW		 4175 break;
4176 case 4:
a0d0e21e
LW		 4177 if (strEQ(d,"read")) return -KEY_read;
4178 if (strEQ(d,"rand")) return -KEY_rand;
4179 if (strEQ(d,"recv")) return -KEY_recv;
79072805
LW		 4180 if (strEQ(d,"redo")) return KEY_redo;
4181 break;
4182 case 5:
a0d0e21e
LW		 4183 if (strEQ(d,"rmdir")) return -KEY_rmdir;
4184 if (strEQ(d,"reset")) return -KEY_reset;
79072805
LW		 4185 break;
4186 case 6:
4187 if (strEQ(d,"return")) return KEY_return;
a0d0e21e
LW		 4188 if (strEQ(d,"rename")) return -KEY_rename;
4189 if (strEQ(d,"rindex")) return -KEY_rindex;
79072805
LW		 4190 break;
4191 case 7:
a0d0e21e
LW		 4192 if (strEQ(d,"require")) return -KEY_require;
4193 if (strEQ(d,"reverse")) return -KEY_reverse;
4194 if (strEQ(d,"readdir")) return -KEY_readdir;
79072805
LW		 4195 break;
4196 case 8:
a0d0e21e
LW		 4197 if (strEQ(d,"readlink")) return -KEY_readlink;
4198 if (strEQ(d,"readline")) return -KEY_readline;
4199 if (strEQ(d,"readpipe")) return -KEY_readpipe;
79072805
LW		 4200 break;
4201 case 9:
a0d0e21e 4202 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
79072805 4203 break;
a687059c 4204 }
79072805
LW		 4205 break;
4206 case 's':
a687059c 4207 switch (d[1]) {
79072805 4208 case 0: return KEY_s;
a687059c 4209 case 'c':
79072805 4210 if (strEQ(d,"scalar")) return KEY_scalar;
a687059c
LW		 4211 break;
4212 case 'e':
79072805
LW		 4213 switch (len) {
4214 case 4:
a0d0e21e
LW		 4215 if (strEQ(d,"seek")) return -KEY_seek;
4216 if (strEQ(d,"send")) return -KEY_send;
79072805
LW		 4217 break;
4218 case 5:
a0d0e21e 4219 if (strEQ(d,"semop")) return -KEY_semop;
79072805
LW		 4220 break;
4221 case 6:
a0d0e21e
LW		 4222 if (strEQ(d,"select")) return -KEY_select;
4223 if (strEQ(d,"semctl")) return -KEY_semctl;
4224 if (strEQ(d,"semget")) return -KEY_semget;
79072805
LW		 4225 break;
4226 case 7:
a0d0e21e
LW		 4227 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
4228 if (strEQ(d,"seekdir")) return -KEY_seekdir;
79072805
LW		 4229 break;
4230 case 8:
a0d0e21e
LW		 4231 if (strEQ(d,"setpwent")) return -KEY_setpwent;
4232 if (strEQ(d,"setgrent")) return -KEY_setgrent;
79072805
LW		 4233 break;
4234 case 9:
a0d0e21e 4235 if (strEQ(d,"setnetent")) return -KEY_setnetent;
79072805
LW		 4236 break;
4237 case 10:
a0d0e21e
LW		 4238 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
4239 if (strEQ(d,"sethostent")) return -KEY_sethostent;
4240 if (strEQ(d,"setservent")) return -KEY_setservent;
79072805
LW		 4241 break;
4242 case 11:
a0d0e21e
LW		 4243 if (strEQ(d,"setpriority")) return -KEY_setpriority;
4244 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
79072805
LW		 4245 break;
4246 }
a687059c
LW		 4247 break;
4248 case 'h':
79072805
LW		 4249 switch (len) {
4250 case 5:
4251 if (strEQ(d,"shift")) return KEY_shift;
4252 break;
4253 case 6:
a0d0e21e
LW		 4254 if (strEQ(d,"shmctl")) return -KEY_shmctl;
4255 if (strEQ(d,"shmget")) return -KEY_shmget;
79072805
LW		 4256 break;
4257 case 7:
a0d0e21e 4258 if (strEQ(d,"shmread")) return -KEY_shmread;
79072805
LW		 4259 break;
4260 case 8:
a0d0e21e
LW		 4261 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4262 if (strEQ(d,"shutdown")) return -KEY_shutdown;
79072805
LW		 4263 break;
4264 }
a687059c
LW		 4265 break;
4266 case 'i':
a0d0e21e 4267 if (strEQ(d,"sin")) return -KEY_sin;
a687059c
LW		 4268 break;
4269 case 'l':
a0d0e21e 4270 if (strEQ(d,"sleep")) return -KEY_sleep;
a687059c
LW		 4271 break;
4272 case 'o':
79072805 4273 if (strEQ(d,"sort")) return KEY_sort;
a0d0e21e
LW		 4274 if (strEQ(d,"socket")) return -KEY_socket;
4275 if (strEQ(d,"socketpair")) return -KEY_socketpair;
a687059c
LW		 4276 break;
4277 case 'p':
79072805 4278 if (strEQ(d,"split")) return KEY_split;
a0d0e21e 4279 if (strEQ(d,"sprintf")) return -KEY_sprintf;
79072805 4280 if (strEQ(d,"splice")) return KEY_splice;
a687059c
LW		 4281 break;
4282 case 'q':
a0d0e21e 4283 if (strEQ(d,"sqrt")) return -KEY_sqrt;
a687059c
LW		 4284 break;
4285 case 'r':
a0d0e21e 4286 if (strEQ(d,"srand")) return -KEY_srand;
a687059c
LW		 4287 break;
4288 case 't':
a0d0e21e 4289 if (strEQ(d,"stat")) return -KEY_stat;
79072805 4290 if (strEQ(d,"study")) return KEY_study;
a687059c
LW		 4291 break;
4292 case 'u':
a0d0e21e 4293 if (strEQ(d,"substr")) return -KEY_substr;
79072805 4294 if (strEQ(d,"sub")) return KEY_sub;
a687059c
LW		 4295 break;
4296 case 'y':
79072805
LW		 4297 switch (len) {
4298 case 6:
a0d0e21e 4299 if (strEQ(d,"system")) return -KEY_system;
79072805
LW		 4300 break;
4301 case 7:
a0d0e21e
LW		 4302 if (strEQ(d,"symlink")) return -KEY_symlink;
4303 if (strEQ(d,"syscall")) return -KEY_syscall;
137443ea 4304 if (strEQ(d,"sysopen")) return -KEY_sysopen;
4305 if (strEQ(d,"sysread")) return -KEY_sysread;
4306 if (strEQ(d,"sysseek")) return -KEY_sysseek;
79072805
LW		 4307 break;
4308 case 8:
a0d0e21e 4309 if (strEQ(d,"syswrite")) return -KEY_syswrite;
79072805 4310 break;
a687059c 4311 }
a687059c
LW		 4312 break;
4313 }
4314 break;
79072805
LW		 4315 case 't':
4316 switch (len) {
4317 case 2:
4318 if (strEQ(d,"tr")) return KEY_tr;
4319 break;
463ee0b2
LW		 4320 case 3:
4321 if (strEQ(d,"tie")) return KEY_tie;
4322 break;
79072805 4323 case 4:
a0d0e21e 4324 if (strEQ(d,"tell")) return -KEY_tell;
c07a80fd 4325 if (strEQ(d,"tied")) return KEY_tied;
a0d0e21e 4326 if (strEQ(d,"time")) return -KEY_time;
79072805
LW		 4327 break;
4328 case 5:
a0d0e21e 4329 if (strEQ(d,"times")) return -KEY_times;
79072805
LW		 4330 break;
4331 case 7:
a0d0e21e 4332 if (strEQ(d,"telldir")) return -KEY_telldir;
79072805
LW		 4333 break;
4334 case 8:
a0d0e21e 4335 if (strEQ(d,"truncate")) return -KEY_truncate;
79072805 4336 break;
378cc40b 4337 }
a687059c 4338 break;
79072805
LW		 4339 case 'u':
4340 switch (len) {
4341 case 2:
a0d0e21e
LW		 4342 if (strEQ(d,"uc")) return -KEY_uc;
4343 break;
4344 case 3:
4345 if (strEQ(d,"use")) return KEY_use;
79072805
LW		 4346 break;
4347 case 5:
4348 if (strEQ(d,"undef")) return KEY_undef;
4349 if (strEQ(d,"until")) return KEY_until;
463ee0b2 4350 if (strEQ(d,"untie")) return KEY_untie;
a0d0e21e
LW		 4351 if (strEQ(d,"utime")) return -KEY_utime;
4352 if (strEQ(d,"umask")) return -KEY_umask;
79072805
LW		 4353 break;
4354 case 6:
4355 if (strEQ(d,"unless")) return KEY_unless;
a0d0e21e
LW		 4356 if (strEQ(d,"unpack")) return -KEY_unpack;
4357 if (strEQ(d,"unlink")) return -KEY_unlink;
79072805
LW		 4358 break;
4359 case 7:
4360 if (strEQ(d,"unshift")) return KEY_unshift;
a0d0e21e 4361 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
79072805 4362 break;
a687059c
LW		 4363 }
4364 break;
79072805 4365 case 'v':
a0d0e21e
LW		 4366 if (strEQ(d,"values")) return -KEY_values;
4367 if (strEQ(d,"vec")) return -KEY_vec;
a687059c 4368 break;
79072805
LW		 4369 case 'w':
4370 switch (len) {
4371 case 4:
a0d0e21e
LW		 4372 if (strEQ(d,"warn")) return -KEY_warn;
4373 if (strEQ(d,"wait")) return -KEY_wait;
79072805
LW		 4374 break;
4375 case 5:
4376 if (strEQ(d,"while")) return KEY_while;
a0d0e21e 4377 if (strEQ(d,"write")) return -KEY_write;
79072805
LW		 4378 break;
4379 case 7:
a0d0e21e 4380 if (strEQ(d,"waitpid")) return -KEY_waitpid;
79072805
LW		 4381 break;
4382 case 9:
a0d0e21e 4383 if (strEQ(d,"wantarray")) return -KEY_wantarray;
79072805 4384 break;
2f3197b3 4385 }
a687059c 4386 break;
79072805 4387 case 'x':
a0d0e21e
LW		 4388 if (len == 1) return -KEY_x;
4389 if (strEQ(d,"xor")) return -KEY_xor;
a687059c 4390 break;
79072805
LW		 4391 case 'y':
4392 if (len == 1) return KEY_y;
4393 break;
4394 case 'z':
a687059c
LW		 4395 break;
4396 }
79072805 4397 return 0;
a687059c
LW		 4398}
4399
8990e307 4400static void
2f3197b3 4401checkcomma(s,name,what)
a687059c 4402register char *s;
2f3197b3 4403char *name;
a687059c
LW		 4404char *what;
4405{
2f3197b3
LW		 4406 char *w;
4407
463ee0b2 4408 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
a0d0e21e
LW		 4409 int level = 1;
4410 for (w = s+2; *w && level; w++) {
4411 if (*w == '(')
4412 ++level;
4413 else if (*w == ')')
4414 --level;
4415 }
4416 if (*w)
4417 for (; *w && isSPACE(*w); w++) ;
d1f3fb15 4418 if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */
2f3197b3
LW		 4419 warn("%s (...) interpreted as function",name);
4420 }
4421 while (s < bufend && isSPACE(*s))
4422 s++;
a687059c
LW		 4423 if (*s == '(')
4424 s++;
de3bb511 4425 while (s < bufend && isSPACE(*s))
a687059c 4426 s++;
79072805 4427 if (isIDFIRST(*s)) {
2f3197b3 4428 w = s++;
de3bb511 4429 while (isALNUM(*s))
a687059c 4430 s++;
de3bb511 4431 while (s < bufend && isSPACE(*s))
a687059c 4432 s++;
e929a76b 4433 if (*s == ',') {
463ee0b2 4434 int kw;
e929a76b 4435 *s = '\0';
4633a7c4 4436 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
e929a76b 4437 *s = ',';
463ee0b2 4438 if (kw)
e929a76b 4439 return;
463ee0b2
LW		 4440 croak("No comma allowed after %s", what);
4441 }
4442 }
4443}
4444
8990e307 4445static char *
8903cb82 4446scan_word(s, dest, destlen, allow_package, slp)
463ee0b2
LW		 4447register char *s;
4448char *dest;
8903cb82 4449STRLEN destlen;
463ee0b2
LW		 4450int allow_package;
4451STRLEN *slp;
4452{
4453 register char *d = dest;
8903cb82 4454 register char *e = d + destlen - 3; /* two-character token, ending NUL */
463ee0b2 4455 for (;;) {
8903cb82 4456 if (d >= e)
fc36a67e 4457 croak(ident_too_long);
463ee0b2
LW		 4458 if (isALNUM(*s))
4459 *d++ = *s++;
4460 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4461 *d++ = ':';
4462 *d++ = ':';
4463 s++;
4464 }
4465 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4466 *d++ = *s++;
4467 *d++ = *s++;
4468 }
4469 else {
4470 *d = '\0';
4471 *slp = d - dest;
4472 return s;
e929a76b 4473 }
378cc40b
LW		 4474 }
4475}
4476
8990e307 4477static char *
8903cb82 4478scan_ident(s, send, dest, destlen, ck_uni)
378cc40b 4479register char *s;
a687059c 4480register char *send;
378cc40b 4481char *dest;
8903cb82 4482STRLEN destlen;
79072805 4483I32 ck_uni;
378cc40b
LW		 4484{
4485 register char *d;
8903cb82 4486 register char *e;
79072805 4487 char *bracket = 0;
748a9306 4488 char funny = *s++;
378cc40b 4489
79072805
LW		 4490 if (lex_brackets == 0)
4491 lex_fakebrack = 0;
a0d0e21e
LW		 4492 if (isSPACE(*s))
4493 s = skipspace(s);
378cc40b 4494 d = dest;
8903cb82 4495 e = d + destlen - 3; /* two-character token, ending NUL */
de3bb511 4496 if (isDIGIT(*s)) {
8903cb82 4497 while (isDIGIT(*s)) {
4498 if (d >= e)
fc36a67e 4499 croak(ident_too_long);
378cc40b 4500 *d++ = *s++;
8903cb82 4501 }
378cc40b
LW		 4502 }
4503 else {
463ee0b2 4504 for (;;) {
8903cb82 4505 if (d >= e)
fc36a67e 4506 croak(ident_too_long);
463ee0b2
LW		 4507 if (isALNUM(*s))
4508 *d++ = *s++;
4509 else if (*s == '\'' && isIDFIRST(s[1])) {
4510 *d++ = ':';
4511 *d++ = ':';
4512 s++;
4513 }
a0d0e21e 4514 else if (*s == ':' && s[1] == ':') {
463ee0b2
LW		 4515 *d++ = *s++;
4516 *d++ = *s++;
4517 }
4518 else
4519 break;
4520 }
378cc40b
LW		 4521 }
4522 *d = '\0';
4523 d = dest;
79072805
LW		 4524 if (*d) {
4525 if (lex_state != LEX_NORMAL)
4526 lex_state = LEX_INTERPENDMAYBE;
4527 return s;
378cc40b 4528 }
748a9306 4529 if (*s == '$' && s[1] &&
ff0cee69 4530 (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) )
5cd24f17 4531 {
4532 if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL)
4533 deprecate("\"$$<digit>\" to mean \"${$}<digit>\"");
4534 else
4535 return s;
4536 }
79072805
LW		 4537 if (*s == '{') {
4538 bracket = s;
4539 s++;
4540 }
4541 else if (ck_uni)
4542 check_uni();
93a17b20 4543 if (s < send)
79072805
LW		 4544 *d = *s++;
4545 d[1] = '\0';
748a9306 4546 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
bbce6d69 4547 *d = toCTRL(*s);
4548 s++;
de3bb511 4549 }
79072805 4550 if (bracket) {
748a9306 4551 if (isSPACE(s[-1])) {
fa83b5b6 4552 while (s < send) {
4553 char ch = *s++;
4554 if (ch != ' ' && ch != '\t') {
4555 *d = ch;
4556 break;
4557 }
4558 }
748a9306 4559 }
ff68c719 4560 if (isIDFIRST(*d)) {
79072805 4561 d++;
748a9306 4562 while (isALNUM(*s) || *s == ':')
79072805
LW		 4563 *d++ = *s++;
4564 *d = '\0';
748a9306 4565 while (s < send && (*s == ' ' || *s == '\t')) s++;
ff68c719 4566 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
748a9306
LW		 4567 if (dowarn && keyword(dest, d - dest)) {
4568 char *brack = *s == '[' ? "[...]" : "{...}";
4569 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4570 funny, dest, brack, funny, dest, brack);
4571 }
4572 lex_fakebrack = lex_brackets+1;
79072805 4573 bracket++;
a0d0e21e 4574 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805
LW		 4575 return s;
4576 }
4577 }
4578 if (*s == '}') {
4579 s++;
4580 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4581 lex_state = LEX_INTERPEND;
748a9306
LW		 4582 if (funny == '#')
4583 funny = '@';
84902520 4584 if (dowarn && lex_state == LEX_NORMAL &&
748a9306
LW		 4585 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4586 warn("Ambiguous use of %c{%s} resolved to %c%s",
4587 funny, dest, funny, dest);
79072805
LW		 4588 }
4589 else {
4590 s = bracket; /* let the parser handle it */
93a17b20 4591 *dest = '\0';
79072805
LW		 4592 }
4593 }
4594 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4595 lex_state = LEX_INTERPEND;
378cc40b
LW		 4596 return s;
4597}
4598
a0d0e21e
LW		 4599void pmflag(pmfl,ch)
4600U16* pmfl;
4601int ch;
4602{
bbce6d69 4603 if (ch == 'i')
a0d0e21e 4604 *pmfl |= PMf_FOLD;
a0d0e21e
LW		 4605 else if (ch == 'g')
4606 *pmfl |= PMf_GLOBAL;
c90c0ff4 4607 else if (ch == 'c')
4608 *pmfl |= PMf_CONTINUE;
a0d0e21e
LW		 4609 else if (ch == 'o')
4610 *pmfl |= PMf_KEEP;
4611 else if (ch == 'm')
4612 *pmfl |= PMf_MULTILINE;
4613 else if (ch == 's')
4614 *pmfl |= PMf_SINGLELINE;
4615 else if (ch == 'x')
4616 *pmfl |= PMf_EXTENDED;
4617}
378cc40b 4618
8990e307 4619static char *
79072805
LW		 4620scan_pat(start)
4621char *start;
378cc40b 4622{
79072805
LW		 4623 PMOP *pm;
4624 char *s;
378cc40b 4625
79072805
LW		 4626 s = scan_str(start);
4627 if (!s) {
4628 if (lex_stuff)
8990e307 4629 SvREFCNT_dec(lex_stuff);
79072805 4630 lex_stuff = Nullsv;
463ee0b2 4631 croak("Search pattern not terminated");
378cc40b 4632 }
bbce6d69 4633
79072805 4634 pm = (PMOP*)newPMOP(OP_MATCH, 0);
a0d0e21e 4635 if (multi_open == '?')
79072805 4636 pm->op_pmflags |= PMf_ONCE;
c90c0ff4 4637 while (*s && strchr("iogcmsx", *s))
a0d0e21e 4638 pmflag(&pm->op_pmflags,*s++);
4633a7c4 4639 pm->op_pmpermflags = pm->op_pmflags;
bbce6d69 4640
79072805
LW		 4641 lex_op = (OP*)pm;
4642 yylval.ival = OP_MATCH;
378cc40b
LW		 4643 return s;
4644}
4645
8990e307 4646static char *
79072805 4647scan_subst(start)
2f3197b3 4648char *start;
79072805 4649{
a0d0e21e 4650 register char *s;
79072805 4651 register PMOP *pm;
4fdae800 4652 I32 first_start;
79072805
LW		 4653 I32 es = 0;
4654
79072805
LW		 4655 yylval.ival = OP_NULL;
4656
a0d0e21e 4657 s = scan_str(start);
79072805
LW		 4658
4659 if (!s) {
4660 if (lex_stuff)
8990e307 4661 SvREFCNT_dec(lex_stuff);
79072805 4662 lex_stuff = Nullsv;
463ee0b2 4663 croak("Substitution pattern not terminated");
a687059c 4664 }
79072805 4665
a0d0e21e 4666 if (s[-1] == multi_open)
79072805
LW		 4667 s--;
4668
4fdae800 4669 first_start = multi_start;
79072805
LW		 4670 s = scan_str(s);
4671 if (!s) {
4672 if (lex_stuff)
8990e307 4673 SvREFCNT_dec(lex_stuff);
79072805
LW		 4674 lex_stuff = Nullsv;
4675 if (lex_repl)
8990e307 4676 SvREFCNT_dec(lex_repl);
79072805 4677 lex_repl = Nullsv;
463ee0b2 4678 croak("Substitution replacement not terminated");
a687059c 4679 }
4fdae800 4680 multi_start = first_start; /* so whole substitution is taken together */
2f3197b3 4681
79072805 4682 pm = (PMOP*)newPMOP(OP_SUBST, 0);
c90c0ff4 4683 while (*s && strchr("iogcmsex", *s)) {
a687059c
LW		 4684 if (*s == 'e') {
4685 s++;
2f3197b3 4686 es++;
a687059c 4687 }
a0d0e21e
LW		 4688 else
4689 pmflag(&pm->op_pmflags,*s++);
378cc40b 4690 }
79072805
LW		 4691
4692 if (es) {
4693 SV *repl;
4694 pm->op_pmflags |= PMf_EVAL;
463ee0b2
LW		 4695 repl = newSVpv("",0);
4696 while (es-- > 0)
a0d0e21e 4697 sv_catpv(repl, es ? "eval " : "do ");
79072805
LW		 4698 sv_catpvn(repl, "{ ", 2);
4699 sv_catsv(repl, lex_repl);
4700 sv_catpvn(repl, " };", 2);
4701 SvCOMPILED_on(repl);
8990e307 4702 SvREFCNT_dec(lex_repl);
79072805 4703 lex_repl = repl;
378cc40b 4704 }
79072805 4705
4633a7c4 4706 pm->op_pmpermflags = pm->op_pmflags;
79072805
LW		 4707 lex_op = (OP*)pm;
4708 yylval.ival = OP_SUBST;
378cc40b
LW		 4709 return s;
4710}
4711
1462b684 4712void
79072805
LW		 4713hoistmust(pm)
4714register PMOP *pm;
378cc40b 4715{
11343788 4716 dTHR;
79072805
LW		 4717 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4718 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
d48672a2 4719 ) {
79072805
LW		 4720 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4721 pm->op_pmflags |= PMf_SCANFIRST;
8990e307 4722 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
748a9306 4723 pm->op_pmslen = SvCUR(pm->op_pmshort);
d48672a2 4724 }
79072805
LW		 4725 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4726 if (pm->op_pmshort &&
4727 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
a687059c 4728 {
79072805 4729 if (pm->op_pmflags & PMf_SCANFIRST) {
8990e307 4730 SvREFCNT_dec(pm->op_pmshort);
79072805 4731 pm->op_pmshort = Nullsv;
378cc40b
LW		 4732 }
4733 else {
8990e307 4734 SvREFCNT_dec(pm->op_pmregexp->regmust);
79072805 4735 pm->op_pmregexp->regmust = Nullsv;
378cc40b
LW		 4736 return;
4737 }
4738 }
774d564b 4739 /* promote the better string */
5cd24f17 4740 if ((!pm->op_pmshort &&
4741 !(pm->op_pmregexp->reganch & ROPT_ANCH_GPOS)) ||
774d564b 4742 ((pm->op_pmflags & PMf_SCANFIRST) &&
4743 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)))) {
8990e307 4744 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
79072805 4745 pm->op_pmshort = pm->op_pmregexp->regmust;
748a9306 4746 pm->op_pmslen = SvCUR(pm->op_pmshort);
79072805
LW		 4747 pm->op_pmregexp->regmust = Nullsv;
4748 pm->op_pmflags |= PMf_SCANFIRST;
378cc40b
LW		 4749 }
4750 }
4751}
4752
8990e307 4753static char *
79072805 4754scan_trans(start)
2f3197b3 4755char *start;
378cc40b 4756{
a0d0e21e 4757 register char* s;
11343788 4758 OP *o;
79072805
LW		 4759 short *tbl;
4760 I32 squash;
4761 I32 delete;
4762 I32 complement;
4763
4764 yylval.ival = OP_NULL;
4765
a0d0e21e 4766 s = scan_str(start);
79072805
LW		 4767 if (!s) {
4768 if (lex_stuff)
8990e307 4769 SvREFCNT_dec(lex_stuff);
79072805 4770 lex_stuff = Nullsv;
463ee0b2 4771 croak("Translation pattern not terminated");
a687059c 4772 }
a0d0e21e 4773 if (s[-1] == multi_open)
2f3197b3
LW		 4774 s--;
4775
93a17b20 4776 s = scan_str(s);
79072805
LW		 4777 if (!s) {
4778 if (lex_stuff)
8990e307 4779 SvREFCNT_dec(lex_stuff);
79072805
LW		 4780 lex_stuff = Nullsv;
4781 if (lex_repl)
8990e307 4782 SvREFCNT_dec(lex_repl);
79072805 4783 lex_repl = Nullsv;
463ee0b2 4784 croak("Translation replacement not terminated");
a687059c 4785 }
79072805
LW		 4786
4787 New(803,tbl,256,short);
11343788 4788 o = newPVOP(OP_TRANS, 0, (char*)tbl);
2f3197b3 4789
395c3793
LW		 4790 complement = delete = squash = 0;
4791 while (*s == 'c' || *s == 'd' || *s == 's') {
4792 if (*s == 'c')
79072805 4793 complement = OPpTRANS_COMPLEMENT;
395c3793 4794 else if (*s == 'd')
79072805 4795 delete = OPpTRANS_DELETE;
395c3793 4796 else
79072805 4797 squash = OPpTRANS_SQUASH;
395c3793
LW		 4798 s++;
4799 }
11343788 4800 o->op_private = delete|squash|complement;
79072805 4801
11343788 4802 lex_op = o;
79072805
LW		 4803 yylval.ival = OP_TRANS;
4804 return s;
4805}
4806
8990e307 4807static char *
79072805
LW		 4808scan_heredoc(s)
4809register char *s;
4810{
11343788 4811 dTHR;
79072805
LW		 4812 SV *herewas;
4813 I32 op_type = OP_SCALAR;
4814 I32 len;
4815 SV *tmpstr;
4816 char term;
4817 register char *d;
fc36a67e 4818 register char *e;
4633a7c4 4819 char *peek;
fd2d0953 4820 int outer = (rsfp && !lex_inwhat);
79072805
LW		 4821
4822 s += 2;
4823 d = tokenbuf;
fc36a67e 4824 e = tokenbuf + sizeof tokenbuf - 1;
fd2d0953 4825 if (!outer)
79072805 4826 *d++ = '\n';
4633a7c4
LW		 4827 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4828 if (*peek && strchr("`'\"",*peek)) {
4829 s = peek;
79072805 4830 term = *s++;
fc36a67e 4831 s = delimcpy(d, e, s, bufend, term, &len);
4832 d += len;
79072805
LW		 4833 if (s < bufend)
4834 s++;
79072805
LW		 4835 }
4836 else {
4837 if (*s == '\\')
4838 s++, term = '\'';
4839 else
4840 term = '"';
4633a7c4
LW		 4841 if (!isALNUM(*s))
4842 deprecate("bare << to mean <<\"\"");
fc36a67e 4843 for (; isALNUM(*s); s++) {
4844 if (d < e)
4845 *d++ = *s;
4846 }
4847 }
4848 if (d >= tokenbuf + sizeof tokenbuf - 1)
4849 croak("Delimiter for here document is too long");
79072805
LW		 4850 *d++ = '\n';
4851 *d = '\0';
4852 len = d - tokenbuf;
4853 d = "\n";
fd2d0953 4854 if (outer || !(d=ninstr(s,bufend,d,d+1)))
79072805
LW		 4855 herewas = newSVpv(s,bufend-s);
4856 else
4857 s--, herewas = newSVpv(s,d-s);
4858 s += SvCUR(herewas);
748a9306
LW		 4859
4860 tmpstr = NEWSV(87,80);
4861 sv_upgrade(tmpstr, SVt_PVIV);
4862 if (term == '\'') {
79072805 4863 op_type = OP_CONST;
748a9306
LW		 4864 SvIVX(tmpstr) = -1;
4865 }
4866 else if (term == '`') {
79072805 4867 op_type = OP_BACKTICK;
748a9306
LW		 4868 SvIVX(tmpstr) = '\\';
4869 }
79072805
LW		 4870
4871 CLINE;
4872 multi_start = curcop->cop_line;
4873 multi_open = multi_close = '<';
79072805 4874 term = *tokenbuf;
fd2d0953 4875 if (!outer) {
79072805
LW		 4876 d = s;
4877 while (s < bufend &&
36477c24 4878 (*s != term || memNE(s,tokenbuf,len)) ) {
79072805
LW		 4879 if (*s++ == '\n')
4880 curcop->cop_line++;
4881 }
4882 if (s >= bufend) {
4883 curcop->cop_line = multi_start;
8990e307 4884 missingterm(tokenbuf);
79072805
LW		 4885 }
4886 sv_setpvn(tmpstr,d+1,s-d);
4887 s += len - 1;
4888 sv_catpvn(herewas,s,bufend-s);
4889 sv_setsv(linestr,herewas);
fd049845 4890 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
463ee0b2 4891 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 4892 }
4893 else
4894 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4895 while (s >= bufend) { /* multiple line string? */
fd2d0953 4896 if (!outer ||
fd049845 4897 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
79072805 4898 curcop->cop_line = multi_start;
8990e307 4899 missingterm(tokenbuf);
79072805
LW		 4900 }
4901 curcop->cop_line++;
84902520 4902 if (PERLDB_LINE && curstash != debstash) {
79072805
LW		 4903 SV *sv = NEWSV(88,0);
4904
93a17b20 4905 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 4906 sv_setsv(sv,linestr);
4907 av_store(GvAV(curcop->cop_filegv),
4908 (I32)curcop->cop_line,sv);
4909 }
463ee0b2 4910 bufend = SvPVX(linestr) + SvCUR(linestr);
36477c24 4911 if (*s == term && memEQ(s,tokenbuf,len)) {
79072805
LW		 4912 s = bufend - 1;
4913 *s = ' ';
4914 sv_catsv(linestr,herewas);
463ee0b2 4915 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 4916 }
4917 else {
4918 s = bufend;
4919 sv_catsv(tmpstr,linestr);
395c3793
LW		 4920 }
4921 }
79072805
LW		 4922 multi_end = curcop->cop_line;
4923 s++;
4924 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4925 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
463ee0b2 4926 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
79072805 4927 }
8990e307 4928 SvREFCNT_dec(herewas);
79072805
LW		 4929 lex_stuff = tmpstr;
4930 yylval.ival = op_type;
4931 return s;
4932}
4933
8990e307 4934static char *
79072805
LW		 4935scan_inputsymbol(start)
4936char *start;
4937{
4938 register char *s = start;
4939 register char *d;
fc36a67e 4940 register char *e;
79072805
LW		 4941 I32 len;
4942
4943 d = tokenbuf;
fc36a67e 4944 e = tokenbuf + sizeof tokenbuf;
4945 s = delimcpy(d, e, s + 1, bufend, '>', &len);
4946 if (len >= sizeof tokenbuf)
4947 croak("Excessively long <> operator");
4948 if (s >= bufend)
463ee0b2 4949 croak("Unterminated <> operator");
fc36a67e 4950 s++;
4633a7c4 4951 if (*d == '$' && d[1]) d++;
a0d0e21e 4952 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
79072805
LW		 4953 d++;
4954 if (d - tokenbuf != len) {
4955 yylval.ival = OP_GLOB;
4956 set_csh();
4957 s = scan_str(start);
4958 if (!s)
463ee0b2 4959 croak("Glob not terminated");
79072805
LW		 4960 return s;
4961 }
395c3793 4962 else {
79072805
LW		 4963 d = tokenbuf;
4964 if (!len)
4965 (void)strcpy(d,"ARGV");
4966 if (*d == '$') {
a0d0e21e 4967 I32 tmp;
11343788
MB		 4968 if ((tmp = pad_findmy(d)) != NOT_IN_PAD) {
4969 OP *o = newOP(OP_PADSV, 0);
4970 o->op_targ = tmp;
4971 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o));
a0d0e21e
LW		 4972 }
4973 else {
4974 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4975 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4976 newUNOP(OP_RV2GV, 0,
4977 newUNOP(OP_RV2SV, 0,
4978 newGVOP(OP_GV, 0, gv))));
4979 }
79072805
LW		 4980 yylval.ival = OP_NULL;
4981 }
4982 else {
85e6fe83 4983 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
79072805
LW		 4984 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4985 yylval.ival = OP_NULL;
4986 }
4987 }
4988 return s;
4989}
4990
8990e307 4991static char *
79072805
LW		 4992scan_str(start)
4993char *start;
4994{
11343788 4995 dTHR;
93a17b20 4996 SV *sv;
79072805
LW		 4997 char *tmps;
4998 register char *s = start;
a0d0e21e 4999 register char term;
93a17b20
LW		 5000 register char *to;
5001 I32 brackets = 1;
79072805 5002
fb73857a 5003 if (isSPACE(*s))
5004 s = skipspace(s);
79072805 5005 CLINE;
a0d0e21e 5006 term = *s;
79072805
LW		 5007 multi_start = curcop->cop_line;
5008 multi_open = term;
93a17b20 5009 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
79072805
LW		 5010 term = tmps[5];
5011 multi_close = term;
5012
93a17b20 5013 sv = NEWSV(87,80);
ed6116ce
LW		 5014 sv_upgrade(sv, SVt_PVIV);
5015 SvIVX(sv) = term;
a0d0e21e 5016 (void)SvPOK_only(sv); /* validate pointer */
93a17b20
LW		 5017 s++;
5018 for (;;) {
5019 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
463ee0b2 5020 to = SvPVX(sv)+SvCUR(sv);
93a17b20
LW		 5021 if (multi_open == multi_close) {
5022 for (; s < bufend; s++,to++) {
463ee0b2
LW		 5023 if (*s == '\n' && !rsfp)
5024 curcop->cop_line++;
a0d0e21e
LW		 5025 if (*s == '\\' && s+1 < bufend && term != '\\') {
5026 if (s[1] == term)
5027 s++;
5028 else
5029 *to++ = *s++;
5030 }
93a17b20
LW		 5031 else if (*s == term)
5032 break;
5033 *to = *s;
5034 }
5035 }
5036 else {
5037 for (; s < bufend; s++,to++) {
463ee0b2
LW		 5038 if (*s == '\n' && !rsfp)
5039 curcop->cop_line++;
6d07e5e9
GS		 5040 if (*s == '\\' && s+1 < bufend) {
5041 if ((s[1] == multi_open) || (s[1] == multi_close))
a0d0e21e
LW		 5042 s++;
5043 else
5044 *to++ = *s++;
5045 }
6d07e5e9 5046 else if (*s == multi_close && --brackets <= 0)
93a17b20
LW		 5047 break;
5048 else if (*s == multi_open)
5049 brackets++;
5050 *to = *s;
5051 }
5052 }
5053 *to = '\0';
463ee0b2 5054 SvCUR_set(sv, to - SvPVX(sv));
93a17b20
LW		 5055
5056 if (s < bufend) break; /* string ends on this line? */
79072805 5057
79072805 5058 if (!rsfp ||
fd049845 5059 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
c07a80fd 5060 sv_free(sv);
79072805
LW		 5061 curcop->cop_line = multi_start;
5062 return Nullch;
5063 }
5064 curcop->cop_line++;
84902520 5065 if (PERLDB_LINE && curstash != debstash) {
79072805
LW		 5066 SV *sv = NEWSV(88,0);
5067
93a17b20 5068 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 5069 sv_setsv(sv,linestr);
5070 av_store(GvAV(curcop->cop_filegv),
5071 (I32)curcop->cop_line, sv);
395c3793 5072 }
463ee0b2 5073 bufend = SvPVX(linestr) + SvCUR(linestr);
378cc40b 5074 }
79072805
LW		 5075 multi_end = curcop->cop_line;
5076 s++;
93a17b20
LW		 5077 if (SvCUR(sv) + 5 < SvLEN(sv)) {
5078 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 5079 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 5080 }
5081 if (lex_stuff)
93a17b20 5082 lex_repl = sv;
79072805 5083 else
93a17b20 5084 lex_stuff = sv;
378cc40b
LW		 5085 return s;
5086}
5087
5088char *
79072805 5089scan_num(start)
2f3197b3 5090char *start;
378cc40b 5091{
2f3197b3 5092 register char *s = start;
378cc40b 5093 register char *d;
fc36a67e 5094 register char *e;
1e422769 5095 I32 tryiv;
79072805
LW		 5096 double value;
5097 SV *sv;
5098 I32 floatit;
93a17b20 5099 char *lastub = 0;
fc36a67e 5100 static char number_too_long[] = "Number too long";
378cc40b
LW		 5101
5102 switch (*s) {
79072805 5103 default:
463ee0b2 5104 croak("panic: scan_num");
378cc40b
LW		 5105 case '0':
5106 {
55497cff 5107 UV u;
79072805 5108 I32 shift;
55497cff 5109 bool overflowed = FALSE;
378cc40b 5110
378cc40b
LW		 5111 if (s[1] == 'x') {
5112 shift = 4;
5113 s += 2;
5114 }
5115 else if (s[1] == '.')
5116 goto decimal;
5117 else
5118 shift = 3;
55497cff 5119 u = 0;
378cc40b 5120 for (;;) {
55497cff 5121 UV n, b;
5122
378cc40b
LW		 5123 switch (*s) {
5124 default:
5125 goto out;
de3bb511
LW		 5126 case '_':
5127 s++;
5128 break;
378cc40b
LW		 5129 case '8': case '9':
5130 if (shift != 4)
a687059c 5131 yyerror("Illegal octal digit");
378cc40b
LW		 5132 /* FALL THROUGH */
5133 case '0': case '1': case '2': case '3': case '4':
5134 case '5': case '6': case '7':
55497cff 5135 b = *s++ & 15;
5136 goto digit;
378cc40b
LW		 5137 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
5138 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
5139 if (shift != 4)
5140 goto out;
55497cff 5141 b = (*s++ & 7) + 9;
5142 digit:
5143 n = u << shift;
5144 if (!overflowed && (n >> shift) != u) {
5145 warn("Integer overflow in %s number",
5146 (shift == 4) ? "hex" : "octal");
5147 overflowed = TRUE;
5148 }
5149 u = n | b;
378cc40b
LW		 5150 break;
5151 }
5152 }
5153 out:
79072805 5154 sv = NEWSV(92,0);
55497cff 5155 sv_setuv(sv, u);
378cc40b
LW		 5156 }
5157 break;
5158 case '1': case '2': case '3': case '4': case '5':
5159 case '6': case '7': case '8': case '9': case '.':
5160 decimal:
378cc40b 5161 d = tokenbuf;
fc36a67e 5162 e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */
79072805 5163 floatit = FALSE;
de3bb511 5164 while (isDIGIT(*s) || *s == '_') {
93a17b20
LW		 5165 if (*s == '_') {
5166 if (dowarn && lastub && s - lastub != 3)
8990e307 5167 warn("Misplaced _ in number");
93a17b20
LW		 5168 lastub = ++s;
5169 }
fc36a67e 5170 else {
5171 if (d >= e)
5172 croak(number_too_long);
378cc40b 5173 *d++ = *s++;
fc36a67e 5174 }
378cc40b 5175 }
93a17b20 5176 if (dowarn && lastub && s - lastub != 3)
8990e307 5177 warn("Misplaced _ in number");
2f3197b3 5178 if (*s == '.' && s[1] != '.') {
79072805 5179 floatit = TRUE;
378cc40b 5180 *d++ = *s++;
fc36a67e 5181 for (; isDIGIT(*s) || *s == '_'; s++) {
5182 if (d >= e)
5183 croak(number_too_long);
5184 if (*s != '_')
5185 *d++ = *s;
378cc40b
LW		 5186 }
5187 }
93a17b20 5188 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
79072805
LW		 5189 floatit = TRUE;
5190 s++;
5191 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
378cc40b
LW		 5192 if (*s == '+' || *s == '-')
5193 *d++ = *s++;
fc36a67e 5194 while (isDIGIT(*s)) {
5195 if (d >= e)
5196 croak(number_too_long);
378cc40b 5197 *d++ = *s++;
fc36a67e 5198 }
378cc40b
LW		 5199 }
5200 *d = '\0';
79072805 5201 sv = NEWSV(92,0);
36477c24 5202 SET_NUMERIC_STANDARD();
79072805 5203 value = atof(tokenbuf);
1e422769 5204 tryiv = I_V(value);
5205 if (!floatit && (double)tryiv == value)
5206 sv_setiv(sv, tryiv);
2f3197b3 5207 else
1e422769 5208 sv_setnv(sv, value);
378cc40b 5209 break;
79072805 5210 }
a687059c 5211
79072805 5212 yylval.opval = newSVOP(OP_CONST, 0, sv);
a687059c 5213
378cc40b
LW		 5214 return s;
5215}
5216
8990e307 5217static char *
79072805
LW		 5218scan_formline(s)
5219register char *s;
378cc40b 5220{
11343788 5221 dTHR;
79072805 5222 register char *eol;
378cc40b 5223 register char *t;
a0d0e21e 5224 SV *stuff = newSVpv("",0);
79072805 5225 bool needargs = FALSE;
378cc40b 5226
79072805 5227 while (!needargs) {
85e6fe83 5228 if (*s == '.' || *s == '}') {
79072805
LW		 5229 /*SUPPRESS 530*/
5230 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
5231 if (*t == '\n')
5232 break;
5233 }
0f85fab0 5234 if (in_eval && !rsfp) {
93a17b20 5235 eol = strchr(s,'\n');
0f85fab0
LW		 5236 if (!eol++)
5237 eol = bufend;
5238 }
5239 else
463ee0b2 5240 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
79072805 5241 if (*s != '#') {
a0d0e21e
LW		 5242 for (t = s; t < eol; t++) {
5243 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
5244 needargs = FALSE;
5245 goto enough; /* ~~ must be first line in formline */
378cc40b 5246 }
a0d0e21e
LW		 5247 if (*t == '@' || *t == '^')
5248 needargs = TRUE;
378cc40b 5249 }
a0d0e21e 5250 sv_catpvn(stuff, s, eol-s);
79072805
LW		 5251 }
5252 s = eol;
5253 if (rsfp) {
fd049845 5254 s = filter_gets(linestr, rsfp, 0);
5255 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
a0d0e21e 5256 bufend = bufptr + SvCUR(linestr);
79072805
LW		 5257 if (!s) {
5258 s = bufptr;
5259 yyerror("Format not terminated");
378cc40b
LW		 5260 break;
5261 }
378cc40b 5262 }
463ee0b2 5263 incline(s);
79072805 5264 }
a0d0e21e
LW		 5265 enough:
5266 if (SvCUR(stuff)) {
463ee0b2 5267 expect = XTERM;
79072805 5268 if (needargs) {
a0d0e21e 5269 lex_state = LEX_NORMAL;
79072805
LW		 5270 nextval[nexttoke].ival = 0;
5271 force_next(',');
5272 }
a0d0e21e
LW		 5273 else
5274 lex_state = LEX_FORMLINE;
79072805
LW		 5275 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
5276 force_next(THING);
5277 nextval[nexttoke].ival = OP_FORMLINE;
5278 force_next(LSTOP);
378cc40b 5279 }
79072805 5280 else {
8990e307 5281 SvREFCNT_dec(stuff);
85e6fe83 5282 lex_formbrack = 0;
79072805
LW		 5283 bufptr = s;
5284 }
5285 return s;
378cc40b 5286}
a687059c 5287
2f3197b3 5288static void
a687059c
LW		 5289set_csh()
5290{
ae986130
LW		 5291#ifdef CSH
5292 if (!cshlen)
5293 cshlen = strlen(cshname);
5294#endif
a687059c 5295}
463ee0b2 5296
ba6d6ac9 5297I32
774d564b 5298start_subparse(is_format, flags)
5299I32 is_format;
fa83b5b6 5300U32 flags;
8990e307 5301{
11343788 5302 dTHR;
ba6d6ac9 5303 I32 oldsavestack_ix = savestack_ix;
748a9306
LW		 5304 CV* outsidecv = compcv;
5305 AV* comppadlist;
8990e307 5306
e9a444f0
LW		 5307 if (compcv) {
5308 assert(SvTYPE(compcv) == SVt_PVCV);
5309 }
8990e307
LW		 5310 save_I32(&subline);
5311 save_item(subname);
55497cff 5312 SAVEI32(padix);
8990e307
LW		 5313 SAVESPTR(curpad);
5314 SAVESPTR(comppad);
5315 SAVESPTR(comppad_name);
748a9306 5316 SAVESPTR(compcv);
55497cff 5317 SAVEI32(comppad_name_fill);
5318 SAVEI32(min_intro_pending);
5319 SAVEI32(max_intro_pending);
5320 SAVEI32(pad_reset_pending);
748a9306
LW		 5321
5322 compcv = (CV*)NEWSV(1104,0);
774d564b 5323 sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV);
fa83b5b6 5324 CvFLAGS(compcv) |= flags;
748a9306 5325
8990e307 5326 comppad = newAV();
6d4ff0d2
MB		 5327 av_push(comppad, Nullsv);
5328 curpad = AvARRAY(comppad);
8990e307
LW		 5329 comppad_name = newAV();
5330 comppad_name_fill = 0;
5331 min_intro_pending = 0;
8990e307 5332 padix = 0;
8990e307 5333 subline = curcop->cop_line;
6d4ff0d2
MB		 5334#ifdef USE_THREADS
5335 av_store(comppad_name, 0, newSVpv("@_", 2));
5336 curpad[0] = (SV*)newAV();
5337 SvPADMY_on(curpad[0]); /* XXX Needed? */
5338 CvOWNER(compcv) = 0;
12ca11f6 5339 New(666, CvMUTEXP(compcv), 1, perl_mutex);
6d4ff0d2 5340 MUTEX_INIT(CvMUTEXP(compcv));
6d4ff0d2 5341#endif /* USE_THREADS */
748a9306
LW		 5342
5343 comppadlist = newAV();
5344 AvREAL_off(comppadlist);
8e07c86e
AD		 5345 av_store(comppadlist, 0, (SV*)comppad_name);
5346 av_store(comppadlist, 1, (SV*)comppad);
748a9306
LW		 5347
5348 CvPADLIST(compcv) = comppadlist;
199100c8 5349 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc(outsidecv);
11343788
MB		 5350#ifdef USE_THREADS
5351 CvOWNER(compcv) = 0;
12ca11f6 5352 New(666, CvMUTEXP(compcv), 1, perl_mutex);
11343788 5353 MUTEX_INIT(CvMUTEXP(compcv));
11343788 5354#endif /* USE_THREADS */
748a9306 5355
8990e307
LW		 5356 return oldsavestack_ix;
5357}
5358
5359int
5360yywarn(s)
5361char *s;
5362{
11343788 5363 dTHR;
8990e307 5364 --error_count;
748a9306
LW		 5365 in_eval |= 2;
5366 yyerror(s);
5367 in_eval &= ~2;
5368 return 0;
8990e307
LW		 5369}
5370
5371int
463ee0b2
LW		 5372yyerror(s)
5373char *s;
5374{
11343788 5375 dTHR;
68dc0745 5376 char *where = NULL;
5377 char *context = NULL;
5378 int contlen = -1;
46fc3d4c 5379 SV *msg;
463ee0b2 5380
54310121 5381 if (!yychar || (yychar == ';' && !rsfp))
5382 where = "at EOF";
5383 else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
463ee0b2
LW		 5384 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5385 while (isSPACE(*oldoldbufptr))
5386 oldoldbufptr++;
68dc0745 5387 context = oldoldbufptr;
5388 contlen = bufptr - oldoldbufptr;
463ee0b2
LW		 5389 }
5390 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5391 oldbufptr != bufptr) {
5392 while (isSPACE(*oldbufptr))
5393 oldbufptr++;
68dc0745 5394 context = oldbufptr;
5395 contlen = bufptr - oldbufptr;
463ee0b2
LW		 5396 }
5397 else if (yychar > 255)
68dc0745 5398 where = "next token ???";
463ee0b2
LW		 5399 else if ((yychar & 127) == 127) {
5400 if (lex_state == LEX_NORMAL ||
5401 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
68dc0745 5402 where = "at end of line";
4633a7c4 5403 else if (lex_inpat)
68dc0745 5404 where = "within pattern";
463ee0b2 5405 else
68dc0745 5406 where = "within string";
463ee0b2 5407 }
46fc3d4c 5408 else {
5409 SV *where_sv = sv_2mortal(newSVpv("next char ", 0));
5410 if (yychar < 32)
5411 sv_catpvf(where_sv, "^%c", toCTRL(yychar));
5412 else if (isPRINT_LC(yychar))
5413 sv_catpvf(where_sv, "%c", yychar);
463ee0b2 5414 else
46fc3d4c 5415 sv_catpvf(where_sv, "\\%03o", yychar & 255);
5416 where = SvPVX(where_sv);
463ee0b2 5417 }
46fc3d4c 5418 msg = sv_2mortal(newSVpv(s, 0));
fc36a67e 5419 sv_catpvf(msg, " at %_ line %ld, ",
46fc3d4c 5420 GvSV(curcop->cop_filegv), (long)curcop->cop_line);
68dc0745 5421 if (context)
46fc3d4c 5422 sv_catpvf(msg, "near \"%.*s\"\n", contlen, context);
463ee0b2 5423 else
46fc3d4c 5424 sv_catpvf(msg, "%s\n", where);
4fdae800 5425 if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) {
46fc3d4c 5426 sv_catpvf(msg,
4fdae800 5427 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
ff0cee69 5428 (int)multi_open,(int)multi_close,(long)multi_start);
a0d0e21e
LW		 5429 multi_end = 0;
5430 }
748a9306 5431 if (in_eval & 2)
fc36a67e 5432 warn("%_", msg);
748a9306 5433 else if (in_eval)
a863c7d1 5434 sv_catsv(errsv, msg);
463ee0b2 5435 else
46fc3d4c 5436 PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg));
463ee0b2 5437 if (++error_count >= 10)
fc36a67e 5438 croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv));
4633a7c4 5439 in_my = 0;
c750a3ec 5440 in_my_stash = Nullhv;
463ee0b2
LW		 5441 return 0;
5442}
Unnamed repository; edit this file 'description' to name the repository.