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Diagnostic cleanup
[perl5.git] / toke.c
CommitLineData
a0d0e21e 1/* toke.c
a687059c 2 *
a0d0e21e 3 * Copyright (c) 1991-1994, 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));
25static char *scan_ident _((char *s, char *send, char *dest, I32 ck_uni));
26static char *scan_inputsymbol _((char *start));
27static char *scan_pat _((char *start));
28static char *scan_str _((char *start));
29static char *scan_subst _((char *start));
30static char *scan_trans _((char *start));
31static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
32static char *skipspace _((char *s));
33static void checkcomma _((char *s, char *name, char *what));
34static void force_ident _((char *s, int kind));
35static void incline _((char *s));
36static int intuit_method _((char *s, GV *gv));
37static int intuit_more _((char *s));
38static I32 lop _((I32 f, expectation x, char *s));
39static void missingterm _((char *s));
40static void no_op _((char *what, char *s));
41static void set_csh _((void));
42static I32 sublex_done _((void));
55497cff 43static I32 sublex_push _((void));
a0d0e21e
LW		 44static I32 sublex_start _((void));
45#ifdef CRIPPLED_CC
46static int uni _((I32 f, char *s));
47#endif
fd049845 48static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
6d5fb7e3 49static void restore_rsfp _((void *f));
2f3197b3 50
fd049845 51static char *linestart; /* beg. of most recently read line */
52
bbce6d69 53static char pending_ident; /* pending identifier lookup */
54
55497cff 55static struct {
56 I32 super_state; /* lexer state to save */
57 I32 sub_inwhat; /* "lex_inwhat" to use */
58 OP *sub_op; /* "lex_op" to use */
59} sublex_info;
60
79072805
LW		 61/* The following are arranged oddly so that the guard on the switch statement
62 * can get by with a single comparison (if the compiler is smart enough).
63 */
64
55497cff 65#define LEX_NORMAL 10
66#define LEX_INTERPNORMAL 9
67#define LEX_INTERPCASEMOD 8
68#define LEX_INTERPPUSH 7
69#define LEX_INTERPSTART 6
70#define LEX_INTERPEND 5
71#define LEX_INTERPENDMAYBE 4
72#define LEX_INTERPCONCAT 3
73#define LEX_INTERPCONST 2
74#define LEX_FORMLINE 1
75#define LEX_KNOWNEXT 0
79072805 76
395c3793
LW		 77#ifdef I_FCNTL
78#include <fcntl.h>
79#endif
fe14fcc3
LW		 80#ifdef I_SYS_FILE
81#include <sys/file.h>
82#endif
395c3793 83
a790bc05 84/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85#ifdef I_UNISTD
86# include <unistd.h> /* Needed for execv() */
87#endif
88
89
79072805
LW		 90#ifdef ff_next
91#undef ff_next
d48672a2
LW		 92#endif
93
79072805 94#include "keywords.h"
fe14fcc3 95
ae986130
LW		 96#ifdef CLINE
97#undef CLINE
98#endif
79072805 99#define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
378cc40b 100
79072805
LW		 101#define TOKEN(retval) return (bufptr = s,(int)retval)
102#define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
a0d0e21e 103#define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
79072805 104#define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
a0d0e21e 105#define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
79072805
LW		 106#define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
107#define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
463ee0b2 108#define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
79072805
LW		 109#define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
110#define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
111#define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
a0d0e21e
LW		 112#define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
113#define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
114#define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
115#define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
79072805 116#define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
a0d0e21e
LW		 117#define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
118#define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
79072805
LW		 119#define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
120#define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
2f3197b3 121
a687059c
LW		 122/* This bit of chicanery makes a unary function followed by
123 * a parenthesis into a function with one argument, highest precedence.
124 */
2f3197b3 125#define UNI(f) return(yylval.ival = f, \
79072805 126 expect = XTERM, \
2f3197b3
LW		 127 bufptr = s, \
128 last_uni = oldbufptr, \
a0d0e21e 129 last_lop_op = f, \
a687059c
LW		 130 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
131
79072805
LW		 132#define UNIBRACK(f) return(yylval.ival = f, \
133 bufptr = s, \
134 last_uni = oldbufptr, \
135 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
136
9f68db38 137/* grandfather return to old style */
79072805
LW		 138#define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
139
a0d0e21e
LW		 140static int
141ao(toketype)
142int toketype;
143{
144 if (*bufptr == '=') {
145 bufptr++;
146 if (toketype == ANDAND)
147 yylval.ival = OP_ANDASSIGN;
148 else if (toketype == OROR)
149 yylval.ival = OP_ORASSIGN;
150 toketype = ASSIGNOP;
151 }
152 return toketype;
153}
154
8990e307
LW		 155static void
156no_op(what, s)
463ee0b2 157char *what;
8990e307 158char *s;
463ee0b2 159{
8990e307 160 char tmpbuf[128];
748a9306 161 char *oldbp = bufptr;
fd049845 162 bool is_first = (oldbufptr == linestart);
8990e307
LW		 163 bufptr = s;
164 sprintf(tmpbuf, "%s found where operator expected", what);
165 yywarn(tmpbuf);
748a9306 166 if (is_first)
a0d0e21e 167 warn("\t(Missing semicolon on previous line?)\n");
748a9306
LW		 168 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
169 char *t;
170 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
171 if (t < bufptr && isSPACE(*t))
172 warn("\t(Do you need to predeclare %.*s?)\n",
173 t - oldoldbufptr, oldoldbufptr);
174
175 }
176 else
177 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
178 bufptr = oldbp;
8990e307
LW		 179}
180
181static void
182missingterm(s)
183char *s;
184{
185 char tmpbuf[3];
186 char q;
187 if (s) {
188 char *nl = strrchr(s,'\n');
189 if (nl)
190 *nl = '\0';
191 }
192 else if (multi_close < 32 || multi_close == 127) {
193 *tmpbuf = '^';
bbce6d69 194 tmpbuf[1] = toCTRL(multi_close);
8990e307
LW		 195 s = "\\n";
196 tmpbuf[2] = '\0';
197 s = tmpbuf;
198 }
199 else {
200 *tmpbuf = multi_close;
201 tmpbuf[1] = '\0';
202 s = tmpbuf;
203 }
204 q = strchr(s,'"') ? '\'' : '"';
205 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
463ee0b2 206}
79072805
LW		 207
208void
a0d0e21e
LW		 209deprecate(s)
210char *s;
211{
212 if (dowarn)
213 warn("Use of %s is deprecated", s);
214}
215
216static void
217depcom()
218{
219 deprecate("comma-less variable list");
220}
221
222void
8990e307
LW		 223lex_start(line)
224SV *line;
79072805 225{
8990e307
LW		 226 char *s;
227 STRLEN len;
228
55497cff 229 SAVEI32(lex_dojoin);
230 SAVEI32(lex_brackets);
231 SAVEI32(lex_fakebrack);
232 SAVEI32(lex_casemods);
233 SAVEI32(lex_starts);
234 SAVEI32(lex_state);
a0d0e21e 235 SAVESPTR(lex_inpat);
55497cff 236 SAVEI32(lex_inwhat);
237 SAVEI16(curcop->cop_line);
85e6fe83
LW		 238 SAVEPPTR(bufptr);
239 SAVEPPTR(bufend);
240 SAVEPPTR(oldbufptr);
241 SAVEPPTR(oldoldbufptr);
fd049845 242 SAVEPPTR(linestart);
463ee0b2 243 SAVESPTR(linestr);
85e6fe83 244 SAVEPPTR(lex_brackstack);
a0d0e21e 245 SAVEPPTR(lex_casestack);
6d5fb7e3 246 SAVEDESTRUCTOR(restore_rsfp, rsfp);
463ee0b2 247
79072805
LW		 248 lex_state = LEX_NORMAL;
249 lex_defer = 0;
8990e307 250 expect = XSTATE;
79072805
LW		 251 lex_brackets = 0;
252 lex_fakebrack = 0;
8990e307 253 New(899, lex_brackstack, 120, char);
a0d0e21e 254 New(899, lex_casestack, 12, char);
8990e307 255 SAVEFREEPV(lex_brackstack);
a0d0e21e 256 SAVEFREEPV(lex_casestack);
79072805 257 lex_casemods = 0;
a0d0e21e 258 *lex_casestack = '\0';
79072805
LW		 259 lex_dojoin = 0;
260 lex_starts = 0;
261 if (lex_stuff)
8990e307 262 SvREFCNT_dec(lex_stuff);
79072805
LW		 263 lex_stuff = Nullsv;
264 if (lex_repl)
8990e307 265 SvREFCNT_dec(lex_repl);
79072805
LW		 266 lex_repl = Nullsv;
267 lex_inpat = 0;
268 lex_inwhat = 0;
8990e307
LW		 269 linestr = line;
270 if (SvREADONLY(linestr))
271 linestr = sv_2mortal(newSVsv(linestr));
272 s = SvPV(linestr, len);
273 if (len && s[len-1] != ';') {
a0d0e21e 274 if (!(SvFLAGS(linestr) & SVs_TEMP))
8990e307
LW		 275 linestr = sv_2mortal(newSVsv(linestr));
276 sv_catpvn(linestr, "\n;", 2);
277 }
278 SvTEMP_off(linestr);
fd049845 279 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
79072805 280 bufend = bufptr + SvCUR(linestr);
c07a80fd 281 SvREFCNT_dec(rs);
282 rs = newSVpv("\n", 1);
8990e307 283 rsfp = 0;
79072805 284}
a687059c 285
463ee0b2
LW		 286void
287lex_end()
288{
463ee0b2
LW		 289}
290
291static void
6d5fb7e3
CS		 292restore_rsfp(f)
293void *f;
294{
760ac839 295 PerlIO *fp = (PerlIO*)f;
6d5fb7e3 296
760ac839
LW		 297 if (rsfp == PerlIO_stdin())
298 PerlIO_clearerr(rsfp);
a5f75d66 299 else if (rsfp && (rsfp != fp))
760ac839 300 PerlIO_close(rsfp);
6d5fb7e3
CS		 301 rsfp = fp;
302}
303
304static void
463ee0b2
LW		 305incline(s)
306char *s;
307{
308 char *t;
309 char *n;
310 char ch;
311 int sawline = 0;
312
313 curcop->cop_line++;
314 if (*s++ != '#')
315 return;
316 while (*s == ' ' || *s == '\t') s++;
317 if (strnEQ(s, "line ", 5)) {
318 s += 5;
319 sawline = 1;
320 }
321 if (!isDIGIT(*s))
322 return;
323 n = s;
324 while (isDIGIT(*s))
325 s++;
326 while (*s == ' ' || *s == '\t')
327 s++;
328 if (*s == '"' && (t = strchr(s+1, '"')))
329 s++;
330 else {
331 if (!sawline)
332 return; /* false alarm */
333 for (t = s; !isSPACE(*t); t++) ;
334 }
335 ch = *t;
336 *t = '\0';
337 if (t - s > 0)
338 curcop->cop_filegv = gv_fetchfile(s);
339 else
340 curcop->cop_filegv = gv_fetchfile(origfilename);
341 *t = ch;
342 curcop->cop_line = atoi(n)-1;
343}
344
8990e307 345static char *
a687059c
LW		 346skipspace(s)
347register char *s;
348{
85e6fe83 349 if (lex_formbrack && lex_brackets <= lex_formbrack) {
463ee0b2
LW		 350 while (s < bufend && (*s == ' ' || *s == '\t'))
351 s++;
352 return s;
353 }
354 for (;;) {
fd049845 355 STRLEN prevlen;
463ee0b2
LW		 356 while (s < bufend && isSPACE(*s))
357 s++;
358 if (s < bufend && *s == '#') {
359 while (s < bufend && *s != '\n')
360 s++;
361 if (s < bufend)
362 s++;
363 }
a0d0e21e 364 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
463ee0b2 365 return s;
fd049845 366 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
a0d0e21e
LW		 367 if (minus_n || minus_p) {
368 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
369 sv_catpv(linestr,";}");
370 minus_n = minus_p = 0;
371 }
372 else
373 sv_setpv(linestr,";");
fd049845 374 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 375 bufend = SvPVX(linestr) + SvCUR(linestr);
376 if (preprocess && !in_eval)
8990e307 377 (void)my_pclose(rsfp);
760ac839
LW		 378 else if ((PerlIO*)rsfp == PerlIO_stdin())
379 PerlIO_clearerr(rsfp);
8990e307 380 else
760ac839 381 (void)PerlIO_close(rsfp);
8990e307 382 rsfp = Nullfp;
463ee0b2
LW		 383 return s;
384 }
fd049845 385 linestart = bufptr = s + prevlen;
386 bufend = s + SvCUR(linestr);
387 s = bufptr;
a0d0e21e 388 incline(s);
8990e307
LW		 389 if (perldb && curstash != debstash) {
390 SV *sv = NEWSV(85,0);
391
392 sv_upgrade(sv, SVt_PVMG);
fd049845 393 sv_setpvn(sv,bufptr,bufend-bufptr);
8990e307
LW		 394 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
395 }
463ee0b2 396 }
a687059c 397}
378cc40b 398
8990e307 399static void
2f3197b3
LW		 400check_uni() {
401 char *s;
402 char ch;
a0d0e21e 403 char *t;
2f3197b3
LW		 404
405 if (oldoldbufptr != last_uni)
406 return;
407 while (isSPACE(*last_uni))
408 last_uni++;
e334a159 409 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
a0d0e21e
LW		 410 if ((t = strchr(s, '(')) && t < bufptr)
411 return;
2f3197b3
LW		 412 ch = *s;
413 *s = '\0';
414 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
415 *s = ch;
416}
417
ffed7fef
LW		 418#ifdef CRIPPLED_CC
419
420#undef UNI
ffed7fef 421#define UNI(f) return uni(f,s)
ffed7fef 422
8990e307 423static int
ffed7fef 424uni(f,s)
79072805 425I32 f;
ffed7fef
LW		 426char *s;
427{
428 yylval.ival = f;
79072805 429 expect = XTERM;
ffed7fef 430 bufptr = s;
2f3197b3 431 last_uni = oldbufptr;
a0d0e21e 432 last_lop_op = f;
ffed7fef
LW		 433 if (*s == '(')
434 return FUNC1;
435 s = skipspace(s);
436 if (*s == '(')
437 return FUNC1;
438 else
439 return UNIOP;
440}
441
a0d0e21e
LW		 442#endif /* CRIPPLED_CC */
443
444#define LOP(f,x) return lop(f,x,s)
445
8990e307 446static I32
a0d0e21e 447lop(f,x,s)
79072805 448I32 f;
a0d0e21e 449expectation x;
ffed7fef
LW		 450char *s;
451{
79072805 452 yylval.ival = f;
35c8bce7 453 CLINE;
a0d0e21e 454 expect = x;
79072805 455 bufptr = s;
8990e307
LW		 456 last_lop = oldbufptr;
457 last_lop_op = f;
a0d0e21e
LW		 458 if (nexttoke)
459 return LSTOP;
79072805
LW		 460 if (*s == '(')
461 return FUNC;
462 s = skipspace(s);
463 if (*s == '(')
464 return FUNC;
465 else
466 return LSTOP;
467}
468
8990e307 469static void
79072805
LW		 470force_next(type)
471I32 type;
472{
473 nexttype[nexttoke] = type;
474 nexttoke++;
475 if (lex_state != LEX_KNOWNEXT) {
476 lex_defer = lex_state;
463ee0b2 477 lex_expect = expect;
79072805
LW		 478 lex_state = LEX_KNOWNEXT;
479 }
480}
481
8990e307 482static char *
a0d0e21e 483force_word(start,token,check_keyword,allow_pack,allow_tick)
463ee0b2 484register char *start;
79072805 485int token;
463ee0b2 486int check_keyword;
a0d0e21e 487int allow_pack;
463ee0b2 488int allow_tick;
79072805 489{
463ee0b2
LW		 490 register char *s;
491 STRLEN len;
492
493 start = skipspace(start);
494 s = start;
a0d0e21e
LW		 495 if (isIDFIRST(*s) ||
496 (allow_pack && *s == ':') ||
497 (allow_tick && *s == '\'') )
498 {
499 s = scan_word(s, tokenbuf, allow_pack, &len);
463ee0b2
LW		 500 if (check_keyword && keyword(tokenbuf, len))
501 return start;
502 if (token == METHOD) {
503 s = skipspace(s);
504 if (*s == '(')
505 expect = XTERM;
506 else {
507 expect = XOPERATOR;
508 force_next(')');
509 force_next('(');
510 }
79072805 511 }
463ee0b2 512 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
8990e307 513 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
79072805
LW		 514 force_next(token);
515 }
516 return s;
517}
518
8990e307 519static void
a0d0e21e 520force_ident(s, kind)
79072805 521register char *s;
a0d0e21e 522int kind;
79072805
LW		 523{
524 if (s && *s) {
748a9306
LW		 525 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
526 nextval[nexttoke].opval = op;
79072805 527 force_next(WORD);
748a9306
LW		 528 if (kind) {
529 op->op_private = OPpCONST_ENTERED;
55497cff 530 /* XXX see note in pp_entereval() for why we forgo typo
531 warnings if the symbol must be introduced in an eval.
532 GSAR 96-10-12 */
533 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
a0d0e21e
LW		 534 kind == '$' ? SVt_PV :
535 kind == '@' ? SVt_PVAV :
536 kind == '%' ? SVt_PVHV :
537 SVt_PVGV
538 );
748a9306 539 }
79072805
LW		 540 }
541}
542
89bfa8cd 543static char *
544force_version(s)
545char *s;
546{
547 OP *version = Nullop;
548
549 s = skipspace(s);
550
551 /* default VERSION number -- GBARR */
552
553 if(isDIGIT(*s)) {
554 char *d;
555 int c;
55497cff 556 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
89bfa8cd 557 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
558 s = scan_num(s);
559 /* real VERSION number -- GBARR */
560 version = yylval.opval;
561 }
562 }
563
564 /* NOTE: The parser sees the package name and the VERSION swapped */
565 nextval[nexttoke].opval = version;
566 force_next(WORD);
567
568 return (s);
569}
570
8990e307 571static SV *
79072805
LW		 572q(sv)
573SV *sv;
574{
575 register char *s;
576 register char *send;
577 register char *d;
463ee0b2 578 STRLEN len;
79072805
LW		 579
580 if (!SvLEN(sv))
581 return sv;
582
a0d0e21e 583 s = SvPV_force(sv, len);
748a9306
LW		 584 if (SvIVX(sv) == -1)
585 return sv;
463ee0b2 586 send = s + len;
79072805
LW		 587 while (s < send && *s != '\\')
588 s++;
589 if (s == send)
590 return sv;
591 d = s;
79072805
LW		 592 while (s < send) {
593 if (*s == '\\') {
a0d0e21e 594 if (s + 1 < send && (s[1] == '\\'))
79072805
LW		 595 s++; /* all that, just for this */
596 }
597 *d++ = *s++;
598 }
599 *d = '\0';
463ee0b2 600 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 601
602 return sv;
603}
604
8990e307 605static I32
79072805
LW		 606sublex_start()
607{
608 register I32 op_type = yylval.ival;
79072805
LW		 609
610 if (op_type == OP_NULL) {
611 yylval.opval = lex_op;
612 lex_op = Nullop;
613 return THING;
614 }
615 if (op_type == OP_CONST || op_type == OP_READLINE) {
616 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
617 lex_stuff = Nullsv;
618 return THING;
619 }
620
55497cff 621 sublex_info.super_state = lex_state;
622 sublex_info.sub_inwhat = op_type;
623 sublex_info.sub_op = lex_op;
624 lex_state = LEX_INTERPPUSH;
625
626 expect = XTERM;
627 if (lex_op) {
628 yylval.opval = lex_op;
629 lex_op = Nullop;
630 return PMFUNC;
631 }
632 else
633 return FUNC;
634}
635
636static I32
637sublex_push()
638{
79072805 639 push_scope();
55497cff 640
641 lex_state = sublex_info.super_state;
642 SAVEI32(lex_dojoin);
643 SAVEI32(lex_brackets);
644 SAVEI32(lex_fakebrack);
645 SAVEI32(lex_casemods);
646 SAVEI32(lex_starts);
647 SAVEI32(lex_state);
a0d0e21e 648 SAVESPTR(lex_inpat);
55497cff 649 SAVEI32(lex_inwhat);
650 SAVEI16(curcop->cop_line);
85e6fe83
LW		 651 SAVEPPTR(bufptr);
652 SAVEPPTR(oldbufptr);
653 SAVEPPTR(oldoldbufptr);
fd049845 654 SAVEPPTR(linestart);
79072805 655 SAVESPTR(linestr);
85e6fe83 656 SAVEPPTR(lex_brackstack);
a0d0e21e 657 SAVEPPTR(lex_casestack);
79072805
LW		 658
659 linestr = lex_stuff;
660 lex_stuff = Nullsv;
661
fd049845 662 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 663 bufend += SvCUR(linestr);
8990e307 664 SAVEFREESV(linestr);
79072805
LW		 665
666 lex_dojoin = FALSE;
667 lex_brackets = 0;
668 lex_fakebrack = 0;
8990e307 669 New(899, lex_brackstack, 120, char);
a0d0e21e 670 New(899, lex_casestack, 12, char);
8990e307 671 SAVEFREEPV(lex_brackstack);
a0d0e21e 672 SAVEFREEPV(lex_casestack);
79072805 673 lex_casemods = 0;
a0d0e21e 674 *lex_casestack = '\0';
79072805
LW		 675 lex_starts = 0;
676 lex_state = LEX_INTERPCONCAT;
677 curcop->cop_line = multi_start;
678
55497cff 679 lex_inwhat = sublex_info.sub_inwhat;
680 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
681 lex_inpat = sublex_info.sub_op;
79072805 682 else
55497cff 683 lex_inpat = Nullop;
79072805 684
55497cff 685 return '(';
79072805
LW		 686}
687
8990e307 688static I32
79072805
LW		 689sublex_done()
690{
691 if (!lex_starts++) {
692 expect = XOPERATOR;
93a17b20 693 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 694 return THING;
695 }
696
697 if (lex_casemods) { /* oops, we've got some unbalanced parens */
698 lex_state = LEX_INTERPCASEMOD;
699 return yylex();
700 }
701
79072805
LW		 702 /* Is there a right-hand side to take care of? */
703 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
704 linestr = lex_repl;
705 lex_inpat = 0;
fd049845 706 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 707 bufend += SvCUR(linestr);
8990e307 708 SAVEFREESV(linestr);
79072805
LW		 709 lex_dojoin = FALSE;
710 lex_brackets = 0;
711 lex_fakebrack = 0;
712 lex_casemods = 0;
a0d0e21e 713 *lex_casestack = '\0';
79072805
LW		 714 lex_starts = 0;
715 if (SvCOMPILED(lex_repl)) {
716 lex_state = LEX_INTERPNORMAL;
717 lex_starts++;
718 }
719 else
720 lex_state = LEX_INTERPCONCAT;
721 lex_repl = Nullsv;
722 return ',';
ffed7fef
LW		 723 }
724 else {
79072805 725 pop_scope();
463ee0b2 726 bufend = SvPVX(linestr);
79072805
LW		 727 bufend += SvCUR(linestr);
728 expect = XOPERATOR;
729 return ')';
ffed7fef
LW		 730 }
731}
732
8990e307 733static char *
79072805
LW		 734scan_const(start)
735char *start;
736{
737 register char *send = bufend;
738 SV *sv = NEWSV(93, send - start);
739 register char *s = start;
463ee0b2 740 register char *d = SvPVX(sv);
79072805
LW		 741 bool dorange = FALSE;
742 I32 len;
743 char *leave =
744 lex_inpat
748a9306 745 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 746 : (lex_inwhat & OP_TRANS)
747 ? ""
748 : "";
749
750 while (s < send || dorange) {
751 if (lex_inwhat == OP_TRANS) {
752 if (dorange) {
753 I32 i;
754 I32 max;
463ee0b2 755 i = d - SvPVX(sv);
79072805 756 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 757 d = SvPVX(sv) + i;
79072805 758 d -= 2;
91b7def8 759 max = (U8)d[1];
760 for (i = (U8)*d; i <= max; i++)
79072805
LW		 761 *d++ = i;
762 dorange = FALSE;
763 continue;
764 }
765 else if (*s == '-' && s+1 < send && s != start) {
766 dorange = TRUE;
767 s++;
768 }
769 }
748a9306
LW		 770 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
771 while (s < send && *s != ')')
772 *d++ = *s++;
773 }
774 else if (*s == '#' && lex_inpat &&
775 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
776 while (s+1 < send && *s != '\n')
777 *d++ = *s++;
778 }
a0d0e21e 779 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 780 break;
781 else if (*s == '$') {
782 if (!lex_inpat) /* not a regexp, so $ must be var */
783 break;
a0d0e21e 784 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 785 break; /* in regexp, $ might be tail anchor */
786 }
787 if (*s == '\\' && s+1 < send) {
788 s++;
93a17b20 789 if (*s && strchr(leave, *s)) {
79072805
LW		 790 *d++ = '\\';
791 *d++ = *s++;
792 continue;
793 }
794 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 795 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 796 {
a0d0e21e
LW		 797 if (dowarn)
798 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 799 *--s = '$';
800 break;
801 }
a0d0e21e 802 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 803 --s;
804 break;
805 }
806 switch (*s) {
807 case '-':
808 if (lex_inwhat == OP_TRANS) {
809 *d++ = *s++;
810 continue;
811 }
812 /* FALL THROUGH */
813 default:
814 *d++ = *s++;
815 continue;
816 case '0': case '1': case '2': case '3':
817 case '4': case '5': case '6': case '7':
818 *d++ = scan_oct(s, 3, &len);
819 s += len;
820 continue;
821 case 'x':
822 *d++ = scan_hex(++s, 2, &len);
823 s += len;
824 continue;
825 case 'c':
826 s++;
bbce6d69 827 len = *s++;
828 *d++ = toCTRL(len);
79072805
LW		 829 continue;
830 case 'b':
831 *d++ = '\b';
832 break;
833 case 'n':
834 *d++ = '\n';
835 break;
836 case 'r':
837 *d++ = '\r';
838 break;
839 case 'f':
840 *d++ = '\f';
841 break;
842 case 't':
843 *d++ = '\t';
844 break;
845 case 'e':
846 *d++ = '\033';
847 break;
848 case 'a':
849 *d++ = '\007';
850 break;
851 }
852 s++;
853 continue;
854 }
855 *d++ = *s++;
856 }
857 *d = '\0';
463ee0b2 858 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 859 SvPOK_on(sv);
860
861 if (SvCUR(sv) + 5 < SvLEN(sv)) {
862 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 863 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 864 }
865 if (s > bufptr)
866 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
867 else
8990e307 868 SvREFCNT_dec(sv);
79072805
LW		 869 return s;
870}
871
872/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 873static int
79072805
LW		 874intuit_more(s)
875register char *s;
876{
877 if (lex_brackets)
878 return TRUE;
879 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
880 return TRUE;
881 if (*s != '{' && *s != '[')
882 return FALSE;
883 if (!lex_inpat)
884 return TRUE;
885
886 /* In a pattern, so maybe we have {n,m}. */
887 if (*s == '{') {
888 s++;
889 if (!isDIGIT(*s))
890 return TRUE;
891 while (isDIGIT(*s))
892 s++;
893 if (*s == ',')
894 s++;
895 while (isDIGIT(*s))
896 s++;
897 if (*s == '}')
898 return FALSE;
899 return TRUE;
900
901 }
902
903 /* On the other hand, maybe we have a character class */
904
905 s++;
906 if (*s == ']' || *s == '^')
907 return FALSE;
908 else {
909 int weight = 2; /* let's weigh the evidence */
910 char seen[256];
911 unsigned char un_char = 0, last_un_char;
93a17b20 912 char *send = strchr(s,']');
79072805
LW		 913 char tmpbuf[512];
914
915 if (!send) /* has to be an expression */
916 return TRUE;
917
918 Zero(seen,256,char);
919 if (*s == '$')
920 weight -= 3;
921 else if (isDIGIT(*s)) {
922 if (s[1] != ']') {
923 if (isDIGIT(s[1]) && s[2] == ']')
924 weight -= 10;
925 }
926 else
927 weight -= 100;
928 }
929 for (; s < send; s++) {
930 last_un_char = un_char;
931 un_char = (unsigned char)*s;
932 switch (*s) {
933 case '@':
934 case '&':
935 case '$':
936 weight -= seen[un_char] * 10;
937 if (isALNUM(s[1])) {
938 scan_ident(s,send,tmpbuf,FALSE);
a0d0e21e 939 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 940 weight -= 100;
941 else
942 weight -= 10;
943 }
944 else if (*s == '$' && s[1] &&
93a17b20
LW		 945 strchr("[#!%*<>()-=",s[1])) {
946 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 947 weight -= 10;
948 else
949 weight -= 1;
950 }
951 break;
952 case '\\':
953 un_char = 254;
954 if (s[1]) {
93a17b20 955 if (strchr("wds]",s[1]))
79072805
LW		 956 weight += 100;
957 else if (seen['\''] || seen['"'])
958 weight += 1;
93a17b20 959 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 960 weight += 40;
961 else if (isDIGIT(s[1])) {
962 weight += 40;
963 while (s[1] && isDIGIT(s[1]))
964 s++;
965 }
966 }
967 else
968 weight += 100;
969 break;
970 case '-':
971 if (s[1] == '\\')
972 weight += 50;
93a17b20 973 if (strchr("aA01! ",last_un_char))
79072805 974 weight += 30;
93a17b20 975 if (strchr("zZ79~",s[1]))
79072805
LW		 976 weight += 30;
977 break;
978 default:
93a17b20 979 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 980 isALPHA(*s) && s[1] && isALPHA(s[1])) {
981 char *d = tmpbuf;
982 while (isALPHA(*s))
983 *d++ = *s++;
984 *d = '\0';
985 if (keyword(tmpbuf, d - tmpbuf))
986 weight -= 150;
987 }
988 if (un_char == last_un_char + 1)
989 weight += 5;
990 weight -= seen[un_char];
991 break;
992 }
993 seen[un_char]++;
994 }
995 if (weight >= 0) /* probably a character class */
996 return FALSE;
997 }
998
999 return TRUE;
1000}
ffed7fef 1001
a0d0e21e
LW		 1002static int
1003intuit_method(start,gv)
1004char *start;
1005GV *gv;
1006{
1007 char *s = start + (*start == '$');
1008 char tmpbuf[1024];
1009 STRLEN len;
1010 GV* indirgv;
1011
1012 if (gv) {
1013 if (GvIO(gv))
1014 return 0;
1015 if (!GvCV(gv))
1016 gv = 0;
1017 }
1018 s = scan_word(s, tmpbuf, TRUE, &len);
1019 if (*start == '$') {
1020 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1021 return 0;
1022 s = skipspace(s);
1023 bufptr = start;
1024 expect = XREF;
1025 return *s == '(' ? FUNCMETH : METHOD;
1026 }
1027 if (!keyword(tmpbuf, len)) {
1028 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1029 if (indirgv && GvCV(indirgv))
1030 return 0;
1031 /* filehandle or package name makes it a method */
89bfa8cd 1032 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1033 s = skipspace(s);
55497cff 1034 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1035 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1036 nextval[nexttoke].opval =
1037 (OP*)newSVOP(OP_CONST, 0,
1038 newSVpv(tmpbuf,0));
1039 nextval[nexttoke].opval->op_private =
1040 OPpCONST_BARE;
1041 expect = XTERM;
1042 force_next(WORD);
1043 bufptr = s;
1044 return *s == '(' ? FUNCMETH : METHOD;
1045 }
1046 }
1047 return 0;
1048}
1049
1050static char*
1051incl_perldb()
1052{
1053 if (perldb) {
1054 char *pdb = getenv("PERL5DB");
1055
1056 if (pdb)
1057 return pdb;
1058 return "BEGIN { require 'perl5db.pl' }";
1059 }
1060 return "";
1061}
1062
1063
16d20bd9
AD		 1064/* Encoded script support. filter_add() effectively inserts a
1065 * 'pre-processing' function into the current source input stream.
1066 * Note that the filter function only applies to the current source file
1067 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1068 *
1069 * The datasv parameter (which may be NULL) can be used to pass
1070 * private data to this instance of the filter. The filter function
1071 * can recover the SV using the FILTER_DATA macro and use it to
1072 * store private buffers and state information.
1073 *
1074 * The supplied datasv parameter is upgraded to a PVIO type
1075 * and the IoDIRP field is used to store the function pointer.
1076 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1077 * private use must be set using malloc'd pointers.
1078 */
1079static int filter_debug = 0;
1080
1081SV *
1082filter_add(funcp, datasv)
1083 filter_t funcp;
1084 SV *datasv;
1085{
1086 if (!funcp){ /* temporary handy debugging hack to be deleted */
1087 filter_debug = atoi((char*)datasv);
1088 return NULL;
1089 }
1090 if (!rsfp_filters)
1091 rsfp_filters = newAV();
1092 if (!datasv)
1093 datasv = newSV(0);
1094 if (!SvUPGRADE(datasv, SVt_PVIO))
1095 die("Can't upgrade filter_add data to SVt_PVIO");
1096 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1097 if (filter_debug)
1098 warn("filter_add func %lx (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1099 av_unshift(rsfp_filters, 1);
1100 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1101 return(datasv);
1102}
1103
1104
1105/* Delete most recently added instance of this filter function. */
a0d0e21e 1106void
16d20bd9
AD		 1107filter_del(funcp)
1108 filter_t funcp;
1109{
1110 if (filter_debug)
1111 warn("filter_del func %lx", funcp);
1112 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1113 return;
1114 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1115 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1116 /* sv_free(av_pop(rsfp_filters)); */
1117 sv_free(av_shift(rsfp_filters));
1118
16d20bd9
AD		 1119 return;
1120 }
1121 /* we need to search for the correct entry and clear it */
1122 die("filter_del can only delete in reverse order (currently)");
1123}
1124
1125
1126/* Invoke the n'th filter function for the current rsfp. */
1127I32
1128filter_read(idx, buf_sv, maxlen)
1129 int idx;
1130 SV *buf_sv;
1131 int maxlen; /* 0 = read one text line */
a0d0e21e 1132{
16d20bd9
AD		 1133 filter_t funcp;
1134 SV *datasv = NULL;
e50aee73 1135
16d20bd9
AD		 1136 if (!rsfp_filters)
1137 return -1;
1138 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1139 /* Provide a default input filter to make life easy. */
1140 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1141 if (filter_debug)
1142 warn("filter_read %d: from rsfp\n", idx);
1143 if (maxlen) {
1144 /* Want a block */
1145 int len ;
1146 int old_len = SvCUR(buf_sv) ;
1147
1148 /* ensure buf_sv is large enough */
1149 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1150 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1151 if (PerlIO_error(rsfp))
37120919
AD		 1152 return -1; /* error */
1153 else
1154 return 0 ; /* end of file */
1155 }
16d20bd9
AD		 1156 SvCUR_set(buf_sv, old_len + len) ;
1157 } else {
1158 /* Want a line */
37120919 1159 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1160 if (PerlIO_error(rsfp))
37120919
AD		 1161 return -1; /* error */
1162 else
1163 return 0 ; /* end of file */
1164 }
16d20bd9
AD		 1165 }
1166 return SvCUR(buf_sv);
1167 }
1168 /* Skip this filter slot if filter has been deleted */
1169 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1170 if (filter_debug)
1171 warn("filter_read %d: skipped (filter deleted)\n", idx);
1172 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1173 }
1174 /* Get function pointer hidden within datasv */
1175 funcp = (filter_t)IoDIRP(datasv);
1176 if (filter_debug)
1177 warn("filter_read %d: via function %lx (%s)\n",
1178 idx, funcp, SvPV(datasv,na));
1179 /* Call function. The function is expected to */
1180 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1181 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1182 return (*funcp)(idx, buf_sv, maxlen);
1183}
1184
1185static char *
fd049845 1186filter_gets(sv,fp, append)
16d20bd9 1187register SV *sv;
760ac839 1188register PerlIO *fp;
fd049845 1189STRLEN append;
16d20bd9
AD		 1190{
1191 if (rsfp_filters) {
1192
55497cff 1193 if (!append)
1194 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1195 if (FILTER_READ(0, sv, 0) > 0)
1196 return ( SvPVX(sv) ) ;
1197 else
1198 return Nullch ;
1199 }
1200 else
fd049845 1201 return (sv_gets(sv, fp, append));
16d20bd9 1202
a0d0e21e
LW		 1203}
1204
1205
748a9306
LW		 1206#ifdef DEBUGGING
1207 static char* exp_name[] =
a0d0e21e 1208 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1209#endif
463ee0b2
LW		 1210
1211extern int yychar; /* last token */
1212
2f3197b3 1213int
378cc40b
LW		 1214yylex()
1215{
79072805 1216 register char *s;
378cc40b 1217 register char *d;
79072805 1218 register I32 tmp;
463ee0b2 1219 STRLEN len;
a687059c 1220
bbce6d69 1221 if (pending_ident) {
1222 char pit = pending_ident;
1223 pending_ident = 0;
1224
1225 if (in_my) {
1226 if (strchr(tokenbuf,':'))
1227 croak(no_myglob,tokenbuf);
1228 yylval.opval = newOP(OP_PADANY, 0);
1229 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1230 return PRIVATEREF;
1231 }
1232
1233 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1234 if (last_lop_op == OP_SORT &&
1235 tokenbuf[0] == '$' &&
1236 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1237 && !tokenbuf[2])
1238 {
1239 for (d = in_eval ? oldoldbufptr : linestart;
1240 d < bufend && *d != '\n';
1241 d++)
1242 {
1243 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1244 croak("Can't use \"my %s\" in sort comparison",
1245 tokenbuf);
1246 }
1247 }
1248 }
1249
1250 yylval.opval = newOP(OP_PADANY, 0);
1251 yylval.opval->op_targ = tmp;
1252 return PRIVATEREF;
1253 }
1254
1255 /* Force them to make up their mind on "@foo". */
1256 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1257 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
1258 if (!gv || (tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv)) {
1259 char tmpbuf[1024];
1260 sprintf(tmpbuf, "Literal %s now requires backslash", tokenbuf);
1261 yyerror(tmpbuf);
1262 }
1263 }
1264
1265 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1266 yylval.opval->op_private = OPpCONST_ENTERED;
1267 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1268 ((tokenbuf[0] == '$') ? SVt_PV
1269 : (tokenbuf[0] == '@') ? SVt_PVAV
1270 : SVt_PVHV));
1271 return WORD;
1272 }
1273
79072805
LW		 1274 switch (lex_state) {
1275#ifdef COMMENTARY
1276 case LEX_NORMAL: /* Some compilers will produce faster */
1277 case LEX_INTERPNORMAL: /* code if we comment these out. */
1278 break;
1279#endif
1280
1281 case LEX_KNOWNEXT:
1282 nexttoke--;
1283 yylval = nextval[nexttoke];
463ee0b2 1284 if (!nexttoke) {
79072805 1285 lex_state = lex_defer;
463ee0b2 1286 expect = lex_expect;
a0d0e21e 1287 lex_defer = LEX_NORMAL;
463ee0b2 1288 }
79072805
LW		 1289 return(nexttype[nexttoke]);
1290
1291 case LEX_INTERPCASEMOD:
1292#ifdef DEBUGGING
1293 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1294 croak("panic: INTERPCASEMOD");
79072805
LW		 1295#endif
1296 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1297 char oldmod;
79072805 1298 if (lex_casemods) {
a0d0e21e
LW		 1299 oldmod = lex_casestack[--lex_casemods];
1300 lex_casestack[lex_casemods] = '\0';
1301 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1302 bufptr += 2;
1303 lex_state = LEX_INTERPCONCAT;
1304 }
79072805
LW		 1305 return ')';
1306 }
a0d0e21e
LW		 1307 if (bufptr != bufend)
1308 bufptr += 2;
1309 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1310 return yylex();
1311 }
1312 else {
1313 s = bufptr + 1;
1314 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1315 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1316 if (strchr("LU", *s) &&
1317 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1318 {
1319 lex_casestack[--lex_casemods] = '\0';
1320 return ')';
1321 }
1322 if (lex_casemods > 10) {
89bfa8cd 1323 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1324 if (newlb != lex_casestack) {
1325 SAVEFREEPV(newlb);
1326 lex_casestack = newlb;
1327 }
1328 }
1329 lex_casestack[lex_casemods++] = *s;
1330 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1331 lex_state = LEX_INTERPCONCAT;
1332 nextval[nexttoke].ival = 0;
1333 force_next('(');
1334 if (*s == 'l')
1335 nextval[nexttoke].ival = OP_LCFIRST;
1336 else if (*s == 'u')
1337 nextval[nexttoke].ival = OP_UCFIRST;
1338 else if (*s == 'L')
1339 nextval[nexttoke].ival = OP_LC;
1340 else if (*s == 'U')
1341 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1342 else if (*s == 'Q')
1343 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1344 else
463ee0b2 1345 croak("panic: yylex");
79072805
LW		 1346 bufptr = s + 1;
1347 force_next(FUNC);
1348 if (lex_starts) {
1349 s = bufptr;
463ee0b2 1350 lex_starts = 0;
79072805
LW		 1351 Aop(OP_CONCAT);
1352 }
1353 else
1354 return yylex();
1355 }
1356
55497cff 1357 case LEX_INTERPPUSH:
1358 return sublex_push();
1359
79072805
LW		 1360 case LEX_INTERPSTART:
1361 if (bufptr == bufend)
1362 return sublex_done();
1363 expect = XTERM;
1364 lex_dojoin = (*bufptr == '@');
1365 lex_state = LEX_INTERPNORMAL;
1366 if (lex_dojoin) {
1367 nextval[nexttoke].ival = 0;
1368 force_next(',');
a0d0e21e 1369 force_ident("\"", '$');
79072805
LW		 1370 nextval[nexttoke].ival = 0;
1371 force_next('$');
1372 nextval[nexttoke].ival = 0;
1373 force_next('(');
1374 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1375 force_next(FUNC);
1376 }
1377 if (lex_starts++) {
1378 s = bufptr;
1379 Aop(OP_CONCAT);
1380 }
1381 else
1382 return yylex();
1383 break;
1384
1385 case LEX_INTERPENDMAYBE:
1386 if (intuit_more(bufptr)) {
1387 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1388 break;
1389 }
1390 /* FALL THROUGH */
1391
1392 case LEX_INTERPEND:
1393 if (lex_dojoin) {
1394 lex_dojoin = FALSE;
1395 lex_state = LEX_INTERPCONCAT;
1396 return ')';
1397 }
1398 /* FALLTHROUGH */
1399 case LEX_INTERPCONCAT:
1400#ifdef DEBUGGING
1401 if (lex_brackets)
463ee0b2 1402 croak("panic: INTERPCONCAT");
79072805
LW		 1403#endif
1404 if (bufptr == bufend)
1405 return sublex_done();
1406
ed6116ce 1407 if (SvIVX(linestr) == '\'') {
79072805
LW		 1408 SV *sv = newSVsv(linestr);
1409 if (!lex_inpat)
1410 sv = q(sv);
1411 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1412 s = bufend;
1413 }
1414 else {
1415 s = scan_const(bufptr);
1416 if (*s == '\\')
1417 lex_state = LEX_INTERPCASEMOD;
1418 else
1419 lex_state = LEX_INTERPSTART;
1420 }
1421
1422 if (s != bufptr) {
1423 nextval[nexttoke] = yylval;
463ee0b2 1424 expect = XTERM;
79072805
LW		 1425 force_next(THING);
1426 if (lex_starts++)
1427 Aop(OP_CONCAT);
1428 else {
1429 bufptr = s;
1430 return yylex();
1431 }
1432 }
1433
1434 return yylex();
a0d0e21e
LW		 1435 case LEX_FORMLINE:
1436 lex_state = LEX_NORMAL;
1437 s = scan_formline(bufptr);
1438 if (!lex_formbrack)
1439 goto rightbracket;
1440 OPERATOR(';');
79072805
LW		 1441 }
1442
1443 s = bufptr;
a687059c
LW		 1444 oldoldbufptr = oldbufptr;
1445 oldbufptr = s;
79072805 1446 DEBUG_p( {
760ac839 1447 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1448 } )
463ee0b2
LW		 1449
1450 retry:
378cc40b
LW		 1451 switch (*s) {
1452 default:
a0d0e21e 1453 warn("Unrecognized character \\%03o ignored", *s++ & 255);
378cc40b 1454 goto retry;
e929a76b
LW		 1455 case 4:
1456 case 26:
1457 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1458 case 0:
463ee0b2 1459 if (!rsfp) {
55497cff 1460 last_uni = 0;
1461 last_lop = 0;
463ee0b2
LW		 1462 if (lex_brackets)
1463 yyerror("Missing right bracket");
79072805 1464 TOKEN(0);
463ee0b2 1465 }
a687059c
LW		 1466 if (s++ < bufend)
1467 goto retry; /* ignore stray nulls */
2f3197b3 1468 last_uni = 0;
79072805 1469 last_lop = 0;
a0d0e21e 1470 if (!in_eval && !preambled) {
79072805 1471 preambled = TRUE;
a0d0e21e 1472 sv_setpv(linestr,incl_perldb());
91b7def8 1473 if (SvCUR(linestr))
1474 sv_catpv(linestr,";");
1475 if (preambleav){
1476 while(AvFILL(preambleav) >= 0) {
1477 SV *tmpsv = av_shift(preambleav);
1478 sv_catsv(linestr, tmpsv);
1479 sv_catpv(linestr, ";");
1480 sv_free(tmpsv);
1481 }
1482 sv_free((SV*)preambleav);
1483 preambleav = NULL;
1484 }
79072805
LW		 1485 if (minus_n || minus_p) {
1486 sv_catpv(linestr, "LINE: while (<>) {");
1487 if (minus_l)
a0d0e21e 1488 sv_catpv(linestr,"chomp;");
2304df62
AD		 1489 if (minus_a){
1490 if (minus_F){
1491 char tmpbuf1[50];
1492 if ( splitstr[0] == '/' ||
1493 splitstr[0] == '\'' ||
1494 splitstr[0] == '"' )
1495 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1496 else
1497 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1498 sv_catpv(linestr,tmpbuf1);
1499 }
1500 else
1501 sv_catpv(linestr,"@F=split(' ');");
1502 }
79072805 1503 }
a0d0e21e 1504 sv_catpv(linestr, "\n");
fd049845 1505 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1506 bufend = SvPVX(linestr) + SvCUR(linestr);
a0d0e21e
LW		 1507 if (perldb && curstash != debstash) {
1508 SV *sv = NEWSV(85,0);
1509
1510 sv_upgrade(sv, SVt_PVMG);
1511 sv_setsv(sv,linestr);
1512 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1513 }
79072805 1514 goto retry;
a687059c 1515 }
e929a76b 1516 do {
fd049845 1517 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1518 fake_eof:
395c3793 1519 if (rsfp) {
a0d0e21e 1520 if (preprocess && !in_eval)
79072805 1521 (void)my_pclose(rsfp);
760ac839
LW		 1522 else if ((PerlIO *)rsfp == PerlIO_stdin())
1523 PerlIO_clearerr(rsfp);
395c3793 1524 else
760ac839 1525 (void)PerlIO_close(rsfp);
395c3793
LW		 1526 rsfp = Nullfp;
1527 }
a0d0e21e 1528 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1529 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1530 sv_catpv(linestr,";}");
fd049845 1531 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1532 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1533 minus_n = minus_p = 0;
1534 goto retry;
1535 }
fd049845 1536 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1537 sv_setpv(linestr,"");
1538 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1539 }
a0d0e21e
LW		 1540 if (doextract) {
1541 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1542 doextract = FALSE;
1543
1544 /* Incest with pod. */
1545 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1546 sv_setpv(linestr, "");
fd049845 1547 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1548 bufend = SvPVX(linestr) + SvCUR(linestr);
1549 doextract = FALSE;
1550 }
1551 }
463ee0b2 1552 incline(s);
e929a76b 1553 } while (doextract);
fd049845 1554 oldoldbufptr = oldbufptr = bufptr = linestart = s;
8990e307 1555 if (perldb && curstash != debstash) {
79072805 1556 SV *sv = NEWSV(85,0);
a687059c 1557
93a17b20 1558 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1559 sv_setsv(sv,linestr);
1560 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1561 }
463ee0b2 1562 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1563 if (curcop->cop_line == 1) {
1564 while (s < bufend && isSPACE(*s))
1565 s++;
a0d0e21e 1566 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1567 s++;
a0d0e21e 1568 if (!in_eval && *s == '#' && s[1] == '!') {
748a9306
LW		 1569 d = instr(s,"perl -");
1570 if (!d)
1571 d = instr(s,"perl");
1572 if (!d &&
1573 !minus_c &&
1574 !instr(s,"indir") &&
1575 instr(origargv[0],"perl"))
1576 {
9f68db38
LW		 1577 char **newargv;
1578 char *cmd;
1579
1580 s += 2;
1581 if (*s == ' ')
1582 s++;
1583 cmd = s;
de3bb511 1584 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1585 s++;
1586 *s++ = '\0';
de3bb511 1587 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1588 s++;
1589 if (s < bufend) {
1590 Newz(899,newargv,origargc+3,char*);
1591 newargv[1] = s;
de3bb511 1592 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1593 s++;
1594 *s = '\0';
1595 Copy(origargv+1, newargv+2, origargc+1, char*);
1596 }
1597 else
1598 newargv = origargv;
1599 newargv[0] = cmd;
1600 execv(cmd,newargv);
463ee0b2 1601 croak("Can't exec %s", cmd);
9f68db38 1602 }
748a9306 1603 if (d) {
a0d0e21e
LW		 1604 int oldpdb = perldb;
1605 int oldn = minus_n;
1606 int oldp = minus_p;
748a9306
LW		 1607
1608 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1609 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1610
1611 if (*d++ == '-') {
1612 while (d = moreswitches(d)) ;
1613 if (perldb && !oldpdb ||
b084f20b 1614 ( minus_n || minus_p ) && !(oldn || oldp) )
1615 /* if we have already added "LINE: while (<>) {",
1616 we must not do it again */
748a9306
LW		 1617 {
1618 sv_setpv(linestr, "");
fd049845 1619 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1620 bufend = SvPVX(linestr) + SvCUR(linestr);
1621 preambled = FALSE;
1622 if (perldb)
1623 (void)gv_fetchfile(origfilename);
1624 goto retry;
1625 }
a0d0e21e 1626 }
79072805 1627 }
9f68db38 1628 }
79072805 1629 }
85e6fe83 1630 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1631 bufptr = s;
1632 lex_state = LEX_FORMLINE;
1633 return yylex();
ae986130 1634 }
378cc40b 1635 goto retry;
fe14fcc3 1636 case ' ': case '\t': case '\f': case '\r': case 013:
378cc40b
LW		 1637 s++;
1638 goto retry;
378cc40b 1639 case '#':
e929a76b 1640 case '\n':
79072805 1641 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1642 d = bufend;
1643 while (s < d && *s != '\n')
378cc40b 1644 s++;
0f85fab0 1645 if (s < d)
378cc40b 1646 s++;
463ee0b2 1647 incline(s);
85e6fe83 1648 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1649 bufptr = s;
1650 lex_state = LEX_FORMLINE;
1651 return yylex();
a687059c 1652 }
378cc40b 1653 }
a687059c 1654 else {
378cc40b 1655 *s = '\0';
a687059c
LW		 1656 bufend = s;
1657 }
378cc40b
LW		 1658 goto retry;
1659 case '-':
79072805 1660 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1661 s++;
748a9306
LW		 1662 bufptr = s;
1663 tmp = *s++;
1664
1665 while (s < bufend && (*s == ' ' || *s == '\t'))
1666 s++;
1667
1668 if (strnEQ(s,"=>",2)) {
1669 if (dowarn)
1670 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1671 tmp, tmp);
1672 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1673 OPERATOR('-'); /* unary minus */
1674 }
e334a159 1675 last_uni = oldbufptr;
a0d0e21e 1676 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1677 switch (tmp) {
79072805
LW		 1678 case 'r': FTST(OP_FTEREAD);
1679 case 'w': FTST(OP_FTEWRITE);
1680 case 'x': FTST(OP_FTEEXEC);
1681 case 'o': FTST(OP_FTEOWNED);
1682 case 'R': FTST(OP_FTRREAD);
1683 case 'W': FTST(OP_FTRWRITE);
1684 case 'X': FTST(OP_FTREXEC);
1685 case 'O': FTST(OP_FTROWNED);
1686 case 'e': FTST(OP_FTIS);
1687 case 'z': FTST(OP_FTZERO);
1688 case 's': FTST(OP_FTSIZE);
1689 case 'f': FTST(OP_FTFILE);
1690 case 'd': FTST(OP_FTDIR);
1691 case 'l': FTST(OP_FTLINK);
1692 case 'p': FTST(OP_FTPIPE);
1693 case 'S': FTST(OP_FTSOCK);
1694 case 'u': FTST(OP_FTSUID);
1695 case 'g': FTST(OP_FTSGID);
1696 case 'k': FTST(OP_FTSVTX);
1697 case 'b': FTST(OP_FTBLK);
1698 case 'c': FTST(OP_FTCHR);
1699 case 't': FTST(OP_FTTTY);
1700 case 'T': FTST(OP_FTTEXT);
1701 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1702 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1703 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1704 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1705 default:
748a9306 1706 croak("Unrecognized file test: -%c", tmp);
378cc40b
LW		 1707 break;
1708 }
1709 }
a687059c
LW		 1710 tmp = *s++;
1711 if (*s == tmp) {
1712 s++;
79072805
LW		 1713 if (expect == XOPERATOR)
1714 TERM(POSTDEC);
1715 else
1716 OPERATOR(PREDEC);
1717 }
1718 else if (*s == '>') {
1719 s++;
1720 s = skipspace(s);
1721 if (isIDFIRST(*s)) {
a0d0e21e 1722 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1723 TOKEN(ARROW);
79072805 1724 }
748a9306
LW		 1725 else if (*s == '$')
1726 OPERATOR(ARROW);
463ee0b2 1727 else
748a9306 1728 TERM(ARROW);
a687059c 1729 }
79072805
LW		 1730 if (expect == XOPERATOR)
1731 Aop(OP_SUBTRACT);
1732 else {
2f3197b3
LW		 1733 if (isSPACE(*s) || !isSPACE(*bufptr))
1734 check_uni();
79072805 1735 OPERATOR('-'); /* unary minus */
2f3197b3 1736 }
79072805 1737
378cc40b 1738 case '+':
a687059c
LW		 1739 tmp = *s++;
1740 if (*s == tmp) {
378cc40b 1741 s++;
79072805
LW		 1742 if (expect == XOPERATOR)
1743 TERM(POSTINC);
1744 else
1745 OPERATOR(PREINC);
378cc40b 1746 }
79072805
LW		 1747 if (expect == XOPERATOR)
1748 Aop(OP_ADD);
1749 else {
2f3197b3
LW		 1750 if (isSPACE(*s) || !isSPACE(*bufptr))
1751 check_uni();
a687059c 1752 OPERATOR('+');
2f3197b3 1753 }
a687059c 1754
378cc40b 1755 case '*':
79072805
LW		 1756 if (expect != XOPERATOR) {
1757 s = scan_ident(s, bufend, tokenbuf, TRUE);
463ee0b2 1758 expect = XOPERATOR;
a0d0e21e
LW		 1759 force_ident(tokenbuf, '*');
1760 if (!*tokenbuf)
1761 PREREF('*');
79072805 1762 TERM('*');
a687059c 1763 }
79072805
LW		 1764 s++;
1765 if (*s == '*') {
a687059c 1766 s++;
79072805 1767 PWop(OP_POW);
a687059c 1768 }
79072805
LW		 1769 Mop(OP_MULTIPLY);
1770
378cc40b 1771 case '%':
bbce6d69 1772 if (expect == XOPERATOR) {
1773 ++s;
1774 Mop(OP_MODULO);
a687059c 1775 }
bbce6d69 1776 tokenbuf[0] = '%';
1777 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1778 if (!tokenbuf[1]) {
1779 if (s == bufend)
1780 yyerror("Final % should be \\% or %name");
1781 PREREF('%');
1782 }
1783 pending_ident = '%';
1784 TERM('%');
a687059c 1785
378cc40b 1786 case '^':
79072805 1787 s++;
a0d0e21e 1788 BOop(OP_BIT_XOR);
79072805
LW		 1789 case '[':
1790 lex_brackets++;
1791 /* FALL THROUGH */
378cc40b 1792 case '~':
378cc40b 1793 case ',':
378cc40b
LW		 1794 tmp = *s++;
1795 OPERATOR(tmp);
a0d0e21e
LW		 1796 case ':':
1797 if (s[1] == ':') {
1798 len = 0;
1799 goto just_a_word;
1800 }
1801 s++;
1802 OPERATOR(':');
8990e307
LW		 1803 case '(':
1804 s++;
a0d0e21e 1805 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1806 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1807 else
1808 expect = XTERM;
1809 TOKEN('(');
378cc40b 1810 case ';':
79072805
LW		 1811 if (curcop->cop_line < copline)
1812 copline = curcop->cop_line;
378cc40b
LW		 1813 tmp = *s++;
1814 OPERATOR(tmp);
1815 case ')':
378cc40b 1816 tmp = *s++;
16d20bd9
AD		 1817 s = skipspace(s);
1818 if (*s == '{')
1819 PREBLOCK(tmp);
378cc40b 1820 TERM(tmp);
79072805
LW		 1821 case ']':
1822 s++;
463ee0b2
LW		 1823 if (lex_brackets <= 0)
1824 yyerror("Unmatched right bracket");
1825 else
1826 --lex_brackets;
79072805 1827 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1828 if (lex_brackets == 0) {
a0d0e21e 1829 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1830 lex_state = LEX_INTERPEND;
1831 }
1832 }
4633a7c4 1833 TERM(']');
79072805
LW		 1834 case '{':
1835 leftbracket:
79072805 1836 s++;
8990e307 1837 if (lex_brackets > 100) {
89bfa8cd 1838 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1839 if (newlb != lex_brackstack) {
1840 SAVEFREEPV(newlb);
1841 lex_brackstack = newlb;
1842 }
1843 }
a0d0e21e
LW		 1844 switch (expect) {
1845 case XTERM:
1846 if (lex_formbrack) {
1847 s--;
1848 PRETERMBLOCK(DO);
1849 }
1850 if (oldoldbufptr == last_lop)
1851 lex_brackstack[lex_brackets++] = XTERM;
1852 else
1853 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1854 OPERATOR(HASHBRACK);
a0d0e21e 1855 break;
a0d0e21e 1856 case XOPERATOR:
748a9306
LW		 1857 while (s < bufend && (*s == ' ' || *s == '\t'))
1858 s++;
89bfa8cd 1859 if (s < bufend && (isALPHA(*s) || *s == '_')) {
748a9306
LW		 1860 d = scan_word(s, tokenbuf, FALSE, &len);
1861 while (d < bufend && (*d == ' ' || *d == '\t'))
1862 d++;
1863 if (*d == '}') {
1864 if (dowarn &&
1865 (keyword(tokenbuf, len) ||
1866 perl_get_cv(tokenbuf, FALSE) ))
1867 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1868 tokenbuf, tokenbuf);
1869 s = force_word(s,WORD,FALSE,TRUE,FALSE);
1870 }
1871 }
1872 /* FALL THROUGH */
1873 case XBLOCK:
a0d0e21e 1874 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 1875 expect = XSTATE;
a0d0e21e
LW		 1876 break;
1877 case XTERMBLOCK:
1878 lex_brackstack[lex_brackets++] = XOPERATOR;
1879 expect = XSTATE;
1880 break;
1881 default: {
1882 char *t;
1883 if (oldoldbufptr == last_lop)
1884 lex_brackstack[lex_brackets++] = XTERM;
1885 else
1886 lex_brackstack[lex_brackets++] = XOPERATOR;
1887 s = skipspace(s);
1888 if (*s == '}')
1889 OPERATOR(HASHBRACK);
1890 if (isALPHA(*s)) {
c07a80fd 1891 for (t = s; t < bufend && isALNUM(*t); t++) ;
a0d0e21e
LW		 1892 }
1893 else if (*s == '\'' || *s == '"') {
1894 t = strchr(s+1,*s);
1895 if (!t++)
1896 t = s;
1897 }
1898 else
1899 t = s;
1900 while (t < bufend && isSPACE(*t))
1901 t++;
1902 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1903 OPERATOR(HASHBRACK);
1904 if (expect == XREF)
1905 expect = XTERM;
1906 else {
1907 lex_brackstack[lex_brackets-1] = XSTATE;
1908 expect = XSTATE;
1909 }
8990e307 1910 }
a0d0e21e 1911 break;
463ee0b2 1912 }
79072805
LW		 1913 yylval.ival = curcop->cop_line;
1914 if (isSPACE(*s) || *s == '#')
1915 copline = NOLINE; /* invalidate current command line number */
79072805 1916 TOKEN('{');
378cc40b 1917 case '}':
79072805
LW		 1918 rightbracket:
1919 s++;
463ee0b2
LW		 1920 if (lex_brackets <= 0)
1921 yyerror("Unmatched right bracket");
1922 else
1923 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 1924 if (lex_brackets < lex_formbrack)
1925 lex_formbrack = 0;
79072805 1926 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1927 if (lex_brackets == 0) {
79072805
LW		 1928 if (lex_fakebrack) {
1929 lex_state = LEX_INTERPEND;
1930 bufptr = s;
1931 return yylex(); /* ignore fake brackets */
1932 }
a0d0e21e 1933 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1934 lex_state = LEX_INTERPEND;
1935 }
1936 }
748a9306
LW		 1937 if (lex_brackets < lex_fakebrack) {
1938 bufptr = s;
1939 lex_fakebrack = 0;
1940 return yylex(); /* ignore fake brackets */
1941 }
79072805
LW		 1942 force_next('}');
1943 TOKEN(';');
378cc40b
LW		 1944 case '&':
1945 s++;
1946 tmp = *s++;
1947 if (tmp == '&')
a0d0e21e 1948 AOPERATOR(ANDAND);
378cc40b 1949 s--;
463ee0b2 1950 if (expect == XOPERATOR) {
fd049845 1951 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 1952 curcop->cop_line--;
1953 warn(warn_nosemi);
1954 curcop->cop_line++;
1955 }
79072805 1956 BAop(OP_BIT_AND);
463ee0b2 1957 }
79072805
LW		 1958
1959 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
463ee0b2
LW		 1960 if (*tokenbuf) {
1961 expect = XOPERATOR;
a0d0e21e 1962 force_ident(tokenbuf, '&');
463ee0b2 1963 }
79072805
LW		 1964 else
1965 PREREF('&');
c07a80fd 1966 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 1967 TERM('&');
1968
378cc40b
LW		 1969 case '|':
1970 s++;
1971 tmp = *s++;
1972 if (tmp == '|')
a0d0e21e 1973 AOPERATOR(OROR);
378cc40b 1974 s--;
79072805 1975 BOop(OP_BIT_OR);
378cc40b
LW		 1976 case '=':
1977 s++;
1978 tmp = *s++;
1979 if (tmp == '=')
79072805
LW		 1980 Eop(OP_EQ);
1981 if (tmp == '>')
1982 OPERATOR(',');
378cc40b 1983 if (tmp == '~')
79072805 1984 PMop(OP_MATCH);
463ee0b2
LW		 1985 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
1986 warn("Reversed %c= operator",tmp);
378cc40b 1987 s--;
748a9306 1988 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 1989 (s == linestart+1 || s[-2] == '\n') )
748a9306 1990 {
a5f75d66
AD		 1991 if (in_eval && !rsfp) {
1992 d = bufend;
1993 while (s < d) {
1994 if (*s++ == '\n') {
1995 incline(s);
1996 if (strnEQ(s,"=cut",4)) {
1997 s = strchr(s,'\n');
1998 if (s)
1999 s++;
2000 else
2001 s = d;
2002 incline(s);
2003 goto retry;
2004 }
2005 }
2006 }
2007 goto retry;
2008 }
a0d0e21e
LW		 2009 s = bufend;
2010 doextract = TRUE;
2011 goto retry;
2012 }
2013 if (lex_brackets < lex_formbrack) {
2014 char *t;
2015 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2016 if (*t == '\n' || *t == '#') {
2017 s--;
2018 expect = XBLOCK;
2019 goto leftbracket;
2020 }
79072805 2021 }
a0d0e21e
LW		 2022 yylval.ival = 0;
2023 OPERATOR(ASSIGNOP);
378cc40b
LW		 2024 case '!':
2025 s++;
2026 tmp = *s++;
2027 if (tmp == '=')
79072805 2028 Eop(OP_NE);
378cc40b 2029 if (tmp == '~')
79072805 2030 PMop(OP_NOT);
378cc40b
LW		 2031 s--;
2032 OPERATOR('!');
2033 case '<':
79072805 2034 if (expect != XOPERATOR) {
93a17b20 2035 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2036 check_uni();
79072805
LW		 2037 if (s[1] == '<')
2038 s = scan_heredoc(s);
2039 else
2040 s = scan_inputsymbol(s);
2041 TERM(sublex_start());
378cc40b
LW		 2042 }
2043 s++;
2044 tmp = *s++;
2045 if (tmp == '<')
79072805 2046 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2047 if (tmp == '=') {
2048 tmp = *s++;
2049 if (tmp == '>')
79072805 2050 Eop(OP_NCMP);
395c3793 2051 s--;
79072805 2052 Rop(OP_LE);
395c3793 2053 }
378cc40b 2054 s--;
79072805 2055 Rop(OP_LT);
378cc40b
LW		 2056 case '>':
2057 s++;
2058 tmp = *s++;
2059 if (tmp == '>')
79072805 2060 SHop(OP_RIGHT_SHIFT);
378cc40b 2061 if (tmp == '=')
79072805 2062 Rop(OP_GE);
378cc40b 2063 s--;
79072805 2064 Rop(OP_GT);
378cc40b
LW		 2065
2066 case '$':
bbce6d69 2067 CLINE;
2068
2069 if (expect == XOPERATOR) {
2070 if (lex_formbrack && lex_brackets == lex_formbrack) {
2071 expect = XTERM;
2072 depcom();
2073 return ','; /* grandfather non-comma-format format */
8990e307 2074 }
bbce6d69 2075 }
2076
2077 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2078 if (expect == XOPERATOR)
2079 no_op("Array length", bufptr);
2080 tokenbuf[0] = '@';
2081 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2082 if (!tokenbuf[1])
a0d0e21e 2083 PREREF(DOLSHARP);
463ee0b2 2084 expect = XOPERATOR;
bbce6d69 2085 pending_ident = '#';
463ee0b2 2086 TOKEN(DOLSHARP);
79072805 2087 }
bbce6d69 2088
2089 if (expect == XOPERATOR)
2090 no_op("Scalar", bufptr);
2091 tokenbuf[0] = '$';
93a17b20 2092 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
bbce6d69 2093 if (!tokenbuf[1]) {
2094 if (s == bufend)
2095 yyerror("Final $ should be \\$ or $name");
2096 PREREF('$');
8990e307 2097 }
a0d0e21e 2098
bbce6d69 2099 /* This kludge not intended to be bulletproof. */
2100 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2101 yylval.opval = newSVOP(OP_CONST, 0,
2102 newSViv((IV)compiling.cop_arybase));
2103 yylval.opval->op_private = OPpCONST_ARYBASE;
2104 TERM(THING);
2105 }
2106
2107 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2108 char *t;
2109 if (*s == '[') {
2110 tokenbuf[0] = '@';
2111 if (dowarn) {
2112 for(t = s + 1;
2113 isSPACE(*t) || isALNUM(*t) || *t == '$';
2114 t++) ;
a0d0e21e
LW		 2115 if (*t++ == ',') {
2116 bufptr = skipspace(bufptr);
bbce6d69 2117 while (t < bufend && *t != ']')
2118 t++;
a0d0e21e 2119 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2120 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2121 }
2122 }
bbce6d69 2123 }
2124 else if (*s == '{') {
2125 tokenbuf[0] = '%';
2126 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2127 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2128 {
a0d0e21e 2129 char tmpbuf[1024];
a0d0e21e
LW		 2130 STRLEN len;
2131 for (t++; isSPACE(*t); t++) ;
748a9306
LW		 2132 if (isIDFIRST(*t)) {
2133 t = scan_word(t, tmpbuf, TRUE, &len);
2134 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2135 warn("You need to quote \"%s\"", tmpbuf);
2136 }
93a17b20
LW		 2137 }
2138 }
2f3197b3 2139 }
bbce6d69 2140
2141 expect = XOPERATOR;
2142 if (lex_state == LEX_NORMAL && isSPACE(*s)) {
2143 bool islop = (last_lop == oldoldbufptr);
2144 s = skipspace(s);
2145 if (!islop || last_lop_op == OP_GREPSTART)
2146 expect = XOPERATOR;
2147 else if (strchr("$@\"'`q", *s))
2148 expect = XTERM; /* e.g. print $fh "foo" */
2149 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2150 expect = XTERM; /* e.g. print $fh &sub */
2151 else if (isDIGIT(*s))
2152 expect = XTERM; /* e.g. print $fh 3 */
2153 else if (*s == '.' && isDIGIT(s[1]))
2154 expect = XTERM; /* e.g. print $fh .3 */
2155 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2156 expect = XTERM; /* e.g. print $fh -1 */
2157 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2158 expect = XTERM; /* print $fh <<"EOF" */
2159 }
2160 pending_ident = '$';
79072805 2161 TOKEN('$');
378cc40b
LW		 2162
2163 case '@':
8990e307 2164 if (expect == XOPERATOR)
bbce6d69 2165 no_op("Array", s);
2166 tokenbuf[0] = '@';
2167 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2168 if (!tokenbuf[1]) {
2169 if (s == bufend)
2170 yyerror("Final @ should be \\@ or @name");
2171 PREREF('@');
2172 }
2173 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2174 if (*s == '{')
2175 tokenbuf[0] = '%';
a0d0e21e
LW		 2176
2177 /* Warn about @ where they meant $. */
2178 if (dowarn) {
2179 if (*s == '[' || *s == '{') {
2180 char *t = s + 1;
2181 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2182 t++;
2183 if (*t == '}' || *t == ']') {
2184 t++;
2185 bufptr = skipspace(bufptr);
2186 warn("Scalar value %.*s better written as $%.*s",
2187 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2188 }
93a17b20
LW		 2189 }
2190 }
463ee0b2 2191 }
bbce6d69 2192 pending_ident = '@';
79072805 2193 TERM('@');
378cc40b
LW		 2194
2195 case '/': /* may either be division or pattern */
2196 case '?': /* may either be conditional or pattern */
79072805 2197 if (expect != XOPERATOR) {
2f3197b3 2198 check_uni();
79072805
LW		 2199 s = scan_pat(s);
2200 TERM(sublex_start());
378cc40b
LW		 2201 }
2202 tmp = *s++;
a687059c 2203 if (tmp == '/')
79072805 2204 Mop(OP_DIVIDE);
378cc40b
LW		 2205 OPERATOR(tmp);
2206
2207 case '.':
748a9306 2208 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2209 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2210 lex_formbrack = 0;
8990e307 2211 expect = XSTATE;
79072805
LW		 2212 goto rightbracket;
2213 }
2214 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2215 tmp = *s++;
a687059c
LW		 2216 if (*s == tmp) {
2217 s++;
2f3197b3
LW		 2218 if (*s == tmp) {
2219 s++;
79072805 2220 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2221 }
2222 else
79072805 2223 yylval.ival = 0;
378cc40b 2224 OPERATOR(DOTDOT);
a687059c 2225 }
79072805 2226 if (expect != XOPERATOR)
2f3197b3 2227 check_uni();
79072805 2228 Aop(OP_CONCAT);
378cc40b
LW		 2229 }
2230 /* FALL THROUGH */
2231 case '0': case '1': case '2': case '3': case '4':
2232 case '5': case '6': case '7': case '8': case '9':
79072805 2233 s = scan_num(s);
8990e307
LW		 2234 if (expect == XOPERATOR)
2235 no_op("Number",s);
79072805
LW		 2236 TERM(THING);
2237
2238 case '\'':
8990e307 2239 s = scan_str(s);
463ee0b2 2240 if (expect == XOPERATOR) {
a0d0e21e
LW		 2241 if (lex_formbrack && lex_brackets == lex_formbrack) {
2242 expect = XTERM;
2243 depcom();
2244 return ','; /* grandfather non-comma-format format */
2245 }
463ee0b2 2246 else
8990e307 2247 no_op("String",s);
463ee0b2 2248 }
79072805 2249 if (!s)
85e6fe83 2250 missingterm((char*)0);
79072805
LW		 2251 yylval.ival = OP_CONST;
2252 TERM(sublex_start());
2253
2254 case '"':
8990e307 2255 s = scan_str(s);
463ee0b2 2256 if (expect == XOPERATOR) {
a0d0e21e
LW		 2257 if (lex_formbrack && lex_brackets == lex_formbrack) {
2258 expect = XTERM;
2259 depcom();
2260 return ','; /* grandfather non-comma-format format */
2261 }
463ee0b2 2262 else
8990e307 2263 no_op("String",s);
463ee0b2 2264 }
79072805 2265 if (!s)
85e6fe83 2266 missingterm((char*)0);
4633a7c4
LW		 2267 yylval.ival = OP_CONST;
2268 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2269 if (*d == '$' || *d == '@' || *d == '\\') {
2270 yylval.ival = OP_STRINGIFY;
2271 break;
2272 }
2273 }
79072805
LW		 2274 TERM(sublex_start());
2275
2276 case '`':
2277 s = scan_str(s);
8990e307
LW		 2278 if (expect == XOPERATOR)
2279 no_op("Backticks",s);
79072805 2280 if (!s)
85e6fe83 2281 missingterm((char*)0);
79072805
LW		 2282 yylval.ival = OP_BACKTICK;
2283 set_csh();
2284 TERM(sublex_start());
2285
2286 case '\\':
2287 s++;
748a9306
LW		 2288 if (dowarn && lex_inwhat && isDIGIT(*s))
2289 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2290 if (expect == XOPERATOR)
2291 no_op("Backslash",s);
79072805
LW		 2292 OPERATOR(REFGEN);
2293
2294 case 'x':
2295 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2296 s++;
2297 Mop(OP_REPEAT);
2f3197b3 2298 }
79072805
LW		 2299 goto keylookup;
2300
378cc40b 2301 case '_':
79072805
LW		 2302 case 'a': case 'A':
2303 case 'b': case 'B':
2304 case 'c': case 'C':
2305 case 'd': case 'D':
2306 case 'e': case 'E':
2307 case 'f': case 'F':
2308 case 'g': case 'G':
2309 case 'h': case 'H':
2310 case 'i': case 'I':
2311 case 'j': case 'J':
2312 case 'k': case 'K':
2313 case 'l': case 'L':
2314 case 'm': case 'M':
2315 case 'n': case 'N':
2316 case 'o': case 'O':
2317 case 'p': case 'P':
2318 case 'q': case 'Q':
2319 case 'r': case 'R':
2320 case 's': case 'S':
2321 case 't': case 'T':
2322 case 'u': case 'U':
2323 case 'v': case 'V':
2324 case 'w': case 'W':
2325 case 'X':
2326 case 'y': case 'Y':
2327 case 'z': case 'Z':
2328
2329 keylookup:
748a9306 2330 bufptr = s;
463ee0b2
LW		 2331 s = scan_word(s, tokenbuf, FALSE, &len);
2332
4633a7c4
LW		 2333 if (*s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2334 goto just_a_word;
2335
a0d0e21e 2336 tmp = keyword(tokenbuf, len);
748a9306
LW		 2337
2338 /* Is this a word before a => operator? */
2339 d = s;
2340 while (d < bufend && (*d == ' ' || *d == '\t'))
2341 d++; /* no comments skipped here, or s### is misparsed */
2342 if (strnEQ(d,"=>",2)) {
2343 CLINE;
2344 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2345 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2346 tokenbuf, tokenbuf);
2347 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2348 yylval.opval->op_private = OPpCONST_BARE;
2349 TERM(WORD);
2350 }
2351
a0d0e21e
LW		 2352 if (tmp < 0) { /* second-class keyword? */
2353 GV* gv;
2354 if (expect != XOPERATOR &&
a5f75d66
AD		 2355 (*s != ':' || s[1] != ':') &&
2356 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2357 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2358 {
2359 tmp = 0;
2360 }
2361 else
2362 tmp = -tmp;
2363 }
2364
2365 reserved_word:
2366 switch (tmp) {
79072805
LW		 2367
2368 default: /* not a keyword */
93a17b20
LW		 2369 just_a_word: {
2370 GV *gv;
748a9306 2371 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2372
2373 /* Get the rest if it looks like a package qualifier */
2374
a0d0e21e 2375 if (*s == '\'' || *s == ':' && s[1] == ':') {
463ee0b2 2376 s = scan_word(s, tokenbuf + len, TRUE, &len);
a0d0e21e
LW		 2377 if (!len)
2378 croak("Bad name after %s::", tokenbuf);
2379 }
8990e307
LW		 2380
2381 /* Do special processing at start of statement. */
2382
2383 if (expect == XSTATE) {
93a17b20 2384 while (isSPACE(*s)) s++;
8990e307 2385 if (*s == ':') { /* It's a label. */
a0d0e21e 2386 yylval.pval = savepv(tokenbuf);
93a17b20
LW		 2387 s++;
2388 CLINE;
2389 TOKEN(LABEL);
2390 }
2391 }
a0d0e21e 2392 else if (expect == XOPERATOR) {
fd049845 2393 if (bufptr == linestart) {
463ee0b2
LW		 2394 curcop->cop_line--;
2395 warn(warn_nosemi);
2396 curcop->cop_line++;
2397 }
2398 else
8990e307 2399 no_op("Bare word",s);
463ee0b2 2400 }
8990e307
LW		 2401
2402 /* Look for a subroutine with this name in current package. */
2403
85e6fe83 2404 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2405
a0d0e21e
LW		 2406 /* Presume this is going to be a bareword of some sort. */
2407
2408 CLINE;
2409 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2410 yylval.opval->op_private = OPpCONST_BARE;
2411
8990e307
LW		 2412 /* See if it's the indirect object for a list operator. */
2413
a0d0e21e
LW		 2414 if (oldoldbufptr &&
2415 oldoldbufptr < bufptr &&
2416 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2417 /* NO SKIPSPACE BEFORE HERE! */
2418 (expect == XREF ||
2419 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2420 {
748a9306
LW		 2421 bool immediate_paren = *s == '(';
2422
a0d0e21e
LW		 2423 /* (Now we can afford to cross potential line boundary.) */
2424 s = skipspace(s);
2425
2426 /* Two barewords in a row may indicate method call. */
2427
2428 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2429 return tmp;
2430
2431 /* If not a declared subroutine, it's an indirect object. */
2432 /* (But it's an indir obj regardless for sort.) */
2433
8e07c86e
AD		 2434 if ((last_lop_op == OP_SORT ||
2435 (!immediate_paren && (!gv || !GvCV(gv))) ) &&
2436 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2437 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2438 goto bareword;
93a17b20
LW		 2439 }
2440 }
8990e307
LW		 2441
2442 /* If followed by a paren, it's certainly a subroutine. */
2443
2444 expect = XOPERATOR;
2445 s = skipspace(s);
93a17b20 2446 if (*s == '(') {
79072805 2447 CLINE;
a0d0e21e 2448 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2449 expect = XOPERATOR;
93a17b20 2450 force_next(WORD);
c07a80fd 2451 yylval.ival = 0;
463ee0b2 2452 TOKEN('&');
79072805 2453 }
93a17b20 2454
a0d0e21e 2455 /* If followed by var or block, call it a method (unless sub) */
8990e307
LW		 2456
2457 if ((*s == '$' || *s == '{') && (!gv || !GvCV(gv))) {
463ee0b2 2458 last_lop = oldbufptr;
8990e307 2459 last_lop_op = OP_METHOD;
93a17b20 2460 PREBLOCK(METHOD);
463ee0b2
LW		 2461 }
2462
8990e307
LW		 2463 /* If followed by a bareword, see if it looks like indir obj. */
2464
a0d0e21e
LW		 2465 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2466 return tmp;
93a17b20 2467
8990e307
LW		 2468 /* Not a method, so call it a subroutine (if defined) */
2469
2470 if (gv && GvCV(gv)) {
4633a7c4 2471 CV* cv = GvCV(gv);
8990e307 2472 if (*s == '(') {
a5f75d66 2473 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2474 expect = XTERM;
2475 force_next(WORD);
c07a80fd 2476 yylval.ival = 0;
8990e307
LW		 2477 TOKEN('&');
2478 }
748a9306 2479 if (lastchar == '-')
c2960299 2480 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2481 tokenbuf, tokenbuf);
8990e307 2482 last_lop = oldbufptr;
a0d0e21e 2483 last_lop_op = OP_ENTERSUB;
89bfa8cd 2484 /* Check for a constant sub */
760ac839
LW		 2485 {
2486 SV *sv = cv_const_sv(cv);
89bfa8cd 2487 if (sv) {
2488 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2489 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2490 yylval.opval->op_private = 0;
2491 TOKEN(WORD);
2492 }
2493 }
2494
a5f75d66
AD		 2495 /* Resolve to GV now. */
2496 op_free(yylval.opval);
2497 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2498 /* Is there a prototype? */
2499 if (SvPOK(cv)) {
2500 STRLEN len;
2501 char *proto = SvPV((SV*)cv, len);
2502 if (!len)
2503 TERM(FUNC0SUB);
2504 if (strEQ(proto, "$"))
2505 OPERATOR(UNIOPSUB);
2506 if (*proto == '&' && *s == '{') {
2507 sv_setpv(subname,"__ANON__");
2508 PREBLOCK(LSTOPSUB);
2509 }
2510 }
a5f75d66 2511 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2512 expect = XTERM;
2513 force_next(WORD);
2514 TOKEN(NOAMP);
2515 }
748a9306
LW		 2516
2517 if (hints & HINT_STRICT_SUBS &&
2518 lastchar != '-' &&
a0d0e21e 2519 strnNE(s,"->",2) &&
9b01e405 2520 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2521 last_lop_op != OP_ACCEPT &&
2522 last_lop_op != OP_PIPE_OP &&
2523 last_lop_op != OP_SOCKPAIR)
2524 {
2525 warn(
2526 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2527 tokenbuf);
2528 ++error_count;
2529 }
8990e307
LW		 2530
2531 /* Call it a bare word */
2532
748a9306
LW		 2533 bareword:
2534 if (dowarn) {
2535 if (lastchar != '-') {
2536 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2537 if (!*d)
2538 warn(warn_reserved, tokenbuf);
2539 }
2540 }
2541 if (lastchar && strchr("*%&", lastchar)) {
2542 warn("Operator or semicolon missing before %c%s",
2543 lastchar, tokenbuf);
c2960299 2544 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2545 lastchar, lastchar);
2546 }
93a17b20 2547 TOKEN(WORD);
79072805 2548 }
79072805
LW		 2549
2550 case KEY___LINE__:
2551 case KEY___FILE__: {
2552 if (tokenbuf[2] == 'L')
2553 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2554 else
463ee0b2 2555 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
79072805
LW		 2556 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2557 TERM(THING);
2558 }
2559
e50aee73 2560 case KEY___DATA__:
79072805
LW		 2561 case KEY___END__: {
2562 GV *gv;
79072805
LW		 2563
2564 /*SUPPRESS 560*/
a5f75d66 2565 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2566 char dname[256];
2567 char *pname = "main";
2568 if (tokenbuf[2] == 'D')
2569 pname = HvNAME(curstash ? curstash : defstash);
2570 sprintf(dname,"%s::DATA", pname);
2571 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
a5f75d66 2572 GvMULTI_on(gv);
79072805 2573 if (!GvIO(gv))
a0d0e21e
LW		 2574 GvIOp(gv) = newIO();
2575 IoIFP(GvIOp(gv)) = rsfp;
2576#if defined(HAS_FCNTL) && defined(F_SETFD)
2577 {
760ac839 2578 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2579 fcntl(fd,F_SETFD,fd >= 3);
2580 }
79072805 2581#endif
fd049845 2582 /* Mark this internal pseudo-handle as clean */
2583 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2584 if (preprocess)
a0d0e21e 2585 IoTYPE(GvIOp(gv)) = '|';
760ac839 2586 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2587 IoTYPE(GvIOp(gv)) = '-';
79072805 2588 else
a0d0e21e 2589 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2590 rsfp = Nullfp;
2591 }
2592 goto fake_eof;
e929a76b 2593 }
de3bb511 2594
8990e307 2595 case KEY_AUTOLOAD:
ed6116ce 2596 case KEY_DESTROY:
79072805
LW		 2597 case KEY_BEGIN:
2598 case KEY_END:
a0d0e21e 2599 if (expect == XSTATE) {
93a17b20
LW		 2600 s = bufptr;
2601 goto really_sub;
79072805
LW		 2602 }
2603 goto just_a_word;
2604
a0d0e21e
LW		 2605 case KEY_CORE:
2606 if (*s == ':' && s[1] == ':') {
2607 s += 2;
748a9306 2608 d = s;
a0d0e21e
LW		 2609 s = scan_word(s, tokenbuf, FALSE, &len);
2610 tmp = keyword(tokenbuf, len);
2611 if (tmp < 0)
2612 tmp = -tmp;
2613 goto reserved_word;
2614 }
2615 goto just_a_word;
2616
463ee0b2
LW		 2617 case KEY_abs:
2618 UNI(OP_ABS);
2619
79072805
LW		 2620 case KEY_alarm:
2621 UNI(OP_ALARM);
2622
2623 case KEY_accept:
a0d0e21e 2624 LOP(OP_ACCEPT,XTERM);
79072805 2625
463ee0b2
LW		 2626 case KEY_and:
2627 OPERATOR(ANDOP);
2628
79072805 2629 case KEY_atan2:
a0d0e21e 2630 LOP(OP_ATAN2,XTERM);
85e6fe83 2631
79072805 2632 case KEY_bind:
a0d0e21e 2633 LOP(OP_BIND,XTERM);
79072805
LW		 2634
2635 case KEY_binmode:
2636 UNI(OP_BINMODE);
2637
2638 case KEY_bless:
a0d0e21e 2639 LOP(OP_BLESS,XTERM);
79072805
LW		 2640
2641 case KEY_chop:
2642 UNI(OP_CHOP);
2643
2644 case KEY_continue:
2645 PREBLOCK(CONTINUE);
2646
2647 case KEY_chdir:
85e6fe83 2648 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2649 UNI(OP_CHDIR);
2650
2651 case KEY_close:
2652 UNI(OP_CLOSE);
2653
2654 case KEY_closedir:
2655 UNI(OP_CLOSEDIR);
2656
2657 case KEY_cmp:
2658 Eop(OP_SCMP);
2659
2660 case KEY_caller:
2661 UNI(OP_CALLER);
2662
2663 case KEY_crypt:
2664#ifdef FCRYPT
de3bb511
LW		 2665 if (!cryptseen++)
2666 init_des();
a687059c 2667#endif
a0d0e21e 2668 LOP(OP_CRYPT,XTERM);
79072805
LW		 2669
2670 case KEY_chmod:
748a9306
LW		 2671 if (dowarn) {
2672 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2673 if (*d != '0' && isDIGIT(*d))
2674 yywarn("chmod: mode argument is missing initial 0");
2675 }
a0d0e21e 2676 LOP(OP_CHMOD,XTERM);
79072805
LW		 2677
2678 case KEY_chown:
a0d0e21e 2679 LOP(OP_CHOWN,XTERM);
79072805
LW		 2680
2681 case KEY_connect:
a0d0e21e 2682 LOP(OP_CONNECT,XTERM);
79072805 2683
463ee0b2
LW		 2684 case KEY_chr:
2685 UNI(OP_CHR);
2686
79072805
LW		 2687 case KEY_cos:
2688 UNI(OP_COS);
2689
2690 case KEY_chroot:
2691 UNI(OP_CHROOT);
2692
2693 case KEY_do:
2694 s = skipspace(s);
2695 if (*s == '{')
a0d0e21e 2696 PRETERMBLOCK(DO);
79072805 2697 if (*s != '\'')
a0d0e21e 2698 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2699 OPERATOR(DO);
79072805
LW		 2700
2701 case KEY_die:
a0d0e21e
LW		 2702 hints |= HINT_BLOCK_SCOPE;
2703 LOP(OP_DIE,XTERM);
79072805
LW		 2704
2705 case KEY_defined:
2706 UNI(OP_DEFINED);
2707
2708 case KEY_delete:
a0d0e21e 2709 UNI(OP_DELETE);
79072805
LW		 2710
2711 case KEY_dbmopen:
a0d0e21e
LW		 2712 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2713 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2714
2715 case KEY_dbmclose:
2716 UNI(OP_DBMCLOSE);
2717
2718 case KEY_dump:
a0d0e21e 2719 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2720 LOOPX(OP_DUMP);
2721
2722 case KEY_else:
2723 PREBLOCK(ELSE);
2724
2725 case KEY_elsif:
2726 yylval.ival = curcop->cop_line;
2727 OPERATOR(ELSIF);
2728
2729 case KEY_eq:
2730 Eop(OP_SEQ);
2731
a0d0e21e
LW		 2732 case KEY_exists:
2733 UNI(OP_EXISTS);
2734
79072805
LW		 2735 case KEY_exit:
2736 UNI(OP_EXIT);
2737
2738 case KEY_eval:
79072805 2739 s = skipspace(s);
a0d0e21e 2740 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2741 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2742
2743 case KEY_eof:
2744 UNI(OP_EOF);
2745
2746 case KEY_exp:
2747 UNI(OP_EXP);
2748
2749 case KEY_each:
2750 UNI(OP_EACH);
2751
2752 case KEY_exec:
2753 set_csh();
a0d0e21e 2754 LOP(OP_EXEC,XREF);
79072805
LW		 2755
2756 case KEY_endhostent:
2757 FUN0(OP_EHOSTENT);
2758
2759 case KEY_endnetent:
2760 FUN0(OP_ENETENT);
2761
2762 case KEY_endservent:
2763 FUN0(OP_ESERVENT);
2764
2765 case KEY_endprotoent:
2766 FUN0(OP_EPROTOENT);
2767
2768 case KEY_endpwent:
2769 FUN0(OP_EPWENT);
2770
2771 case KEY_endgrent:
2772 FUN0(OP_EGRENT);
2773
2774 case KEY_for:
2775 case KEY_foreach:
2776 yylval.ival = curcop->cop_line;
55497cff 2777 s = skipspace(s);
2778 if (isIDFIRST(*s)) {
2779 char *p = s;
2780 if ((bufend - p) >= 3 &&
2781 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2782 p += 2;
2783 p = skipspace(p);
2784 if (isIDFIRST(*p))
2785 croak("Missing $ on loop variable");
2786 }
79072805
LW		 2787 OPERATOR(FOR);
2788
2789 case KEY_formline:
a0d0e21e 2790 LOP(OP_FORMLINE,XTERM);
79072805
LW		 2791
2792 case KEY_fork:
2793 FUN0(OP_FORK);
2794
2795 case KEY_fcntl:
a0d0e21e 2796 LOP(OP_FCNTL,XTERM);
79072805
LW		 2797
2798 case KEY_fileno:
2799 UNI(OP_FILENO);
2800
2801 case KEY_flock:
a0d0e21e 2802 LOP(OP_FLOCK,XTERM);
79072805
LW		 2803
2804 case KEY_gt:
2805 Rop(OP_SGT);
2806
2807 case KEY_ge:
2808 Rop(OP_SGE);
2809
2810 case KEY_grep:
a0d0e21e 2811 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 2812
2813 case KEY_goto:
a0d0e21e 2814 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2815 LOOPX(OP_GOTO);
2816
2817 case KEY_gmtime:
2818 UNI(OP_GMTIME);
2819
2820 case KEY_getc:
2821 UNI(OP_GETC);
2822
2823 case KEY_getppid:
2824 FUN0(OP_GETPPID);
2825
2826 case KEY_getpgrp:
2827 UNI(OP_GETPGRP);
2828
2829 case KEY_getpriority:
a0d0e21e 2830 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 2831
2832 case KEY_getprotobyname:
2833 UNI(OP_GPBYNAME);
2834
2835 case KEY_getprotobynumber:
a0d0e21e 2836 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 2837
2838 case KEY_getprotoent:
2839 FUN0(OP_GPROTOENT);
2840
2841 case KEY_getpwent:
2842 FUN0(OP_GPWENT);
2843
2844 case KEY_getpwnam:
2845 FUN1(OP_GPWNAM);
2846
2847 case KEY_getpwuid:
2848 FUN1(OP_GPWUID);
2849
2850 case KEY_getpeername:
2851 UNI(OP_GETPEERNAME);
2852
2853 case KEY_gethostbyname:
2854 UNI(OP_GHBYNAME);
2855
2856 case KEY_gethostbyaddr:
a0d0e21e 2857 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 2858
2859 case KEY_gethostent:
2860 FUN0(OP_GHOSTENT);
2861
2862 case KEY_getnetbyname:
2863 UNI(OP_GNBYNAME);
2864
2865 case KEY_getnetbyaddr:
a0d0e21e 2866 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 2867
2868 case KEY_getnetent:
2869 FUN0(OP_GNETENT);
2870
2871 case KEY_getservbyname:
a0d0e21e 2872 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 2873
2874 case KEY_getservbyport:
a0d0e21e 2875 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 2876
2877 case KEY_getservent:
2878 FUN0(OP_GSERVENT);
2879
2880 case KEY_getsockname:
2881 UNI(OP_GETSOCKNAME);
2882
2883 case KEY_getsockopt:
a0d0e21e 2884 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 2885
2886 case KEY_getgrent:
2887 FUN0(OP_GGRENT);
2888
2889 case KEY_getgrnam:
2890 FUN1(OP_GGRNAM);
2891
2892 case KEY_getgrgid:
2893 FUN1(OP_GGRGID);
2894
2895 case KEY_getlogin:
2896 FUN0(OP_GETLOGIN);
2897
93a17b20 2898 case KEY_glob:
a0d0e21e
LW		 2899 set_csh();
2900 LOP(OP_GLOB,XTERM);
93a17b20 2901
79072805
LW		 2902 case KEY_hex:
2903 UNI(OP_HEX);
2904
2905 case KEY_if:
2906 yylval.ival = curcop->cop_line;
2907 OPERATOR(IF);
2908
2909 case KEY_index:
a0d0e21e 2910 LOP(OP_INDEX,XTERM);
79072805
LW		 2911
2912 case KEY_int:
2913 UNI(OP_INT);
2914
2915 case KEY_ioctl:
a0d0e21e 2916 LOP(OP_IOCTL,XTERM);
79072805
LW		 2917
2918 case KEY_join:
a0d0e21e 2919 LOP(OP_JOIN,XTERM);
79072805
LW		 2920
2921 case KEY_keys:
2922 UNI(OP_KEYS);
2923
2924 case KEY_kill:
a0d0e21e 2925 LOP(OP_KILL,XTERM);
79072805
LW		 2926
2927 case KEY_last:
a0d0e21e 2928 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 2929 LOOPX(OP_LAST);
a0d0e21e 2930
79072805
LW		 2931 case KEY_lc:
2932 UNI(OP_LC);
2933
2934 case KEY_lcfirst:
2935 UNI(OP_LCFIRST);
2936
2937 case KEY_local:
2938 OPERATOR(LOCAL);
2939
2940 case KEY_length:
2941 UNI(OP_LENGTH);
2942
2943 case KEY_lt:
2944 Rop(OP_SLT);
2945
2946 case KEY_le:
2947 Rop(OP_SLE);
2948
2949 case KEY_localtime:
2950 UNI(OP_LOCALTIME);
2951
2952 case KEY_log:
2953 UNI(OP_LOG);
2954
2955 case KEY_link:
a0d0e21e 2956 LOP(OP_LINK,XTERM);
79072805
LW		 2957
2958 case KEY_listen:
a0d0e21e 2959 LOP(OP_LISTEN,XTERM);
79072805
LW		 2960
2961 case KEY_lstat:
2962 UNI(OP_LSTAT);
2963
2964 case KEY_m:
2965 s = scan_pat(s);
2966 TERM(sublex_start());
2967
a0d0e21e
LW		 2968 case KEY_map:
2969 LOP(OP_MAPSTART,XREF);
2970
79072805 2971 case KEY_mkdir:
a0d0e21e 2972 LOP(OP_MKDIR,XTERM);
79072805
LW		 2973
2974 case KEY_msgctl:
a0d0e21e 2975 LOP(OP_MSGCTL,XTERM);
79072805
LW		 2976
2977 case KEY_msgget:
a0d0e21e 2978 LOP(OP_MSGGET,XTERM);
79072805
LW		 2979
2980 case KEY_msgrcv:
a0d0e21e 2981 LOP(OP_MSGRCV,XTERM);
79072805
LW		 2982
2983 case KEY_msgsnd:
a0d0e21e 2984 LOP(OP_MSGSND,XTERM);
79072805 2985
93a17b20
LW		 2986 case KEY_my:
2987 in_my = TRUE;
55497cff 2988 OPERATOR(MY);
93a17b20 2989
79072805 2990 case KEY_next:
a0d0e21e 2991 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2992 LOOPX(OP_NEXT);
2993
2994 case KEY_ne:
2995 Eop(OP_SNE);
2996
a0d0e21e
LW		 2997 case KEY_no:
2998 if (expect != XSTATE)
2999 yyerror("\"no\" not allowed in expression");
3000 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3001 s = force_version(s);
a0d0e21e
LW		 3002 yylval.ival = 0;
3003 OPERATOR(USE);
3004
3005 case KEY_not:
3006 OPERATOR(NOTOP);
3007
79072805 3008 case KEY_open:
93a17b20
LW		 3009 s = skipspace(s);
3010 if (isIDFIRST(*s)) {
3011 char *t;
3012 for (d = s; isALNUM(*d); d++) ;
3013 t = skipspace(d);
3014 if (strchr("|&*+-=!?:.", *t))
3015 warn("Precedence problem: open %.*s should be open(%.*s)",
3016 d-s,s, d-s,s);
3017 }
a0d0e21e 3018 LOP(OP_OPEN,XTERM);
79072805 3019
463ee0b2 3020 case KEY_or:
a0d0e21e 3021 yylval.ival = OP_OR;
463ee0b2
LW		 3022 OPERATOR(OROP);
3023
79072805
LW		 3024 case KEY_ord:
3025 UNI(OP_ORD);
3026
3027 case KEY_oct:
3028 UNI(OP_OCT);
3029
3030 case KEY_opendir:
a0d0e21e 3031 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3032
3033 case KEY_print:
3034 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3035 LOP(OP_PRINT,XREF);
79072805
LW		 3036
3037 case KEY_printf:
3038 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3039 LOP(OP_PRTF,XREF);
79072805 3040
c07a80fd 3041 case KEY_prototype:
3042 UNI(OP_PROTOTYPE);
3043
79072805 3044 case KEY_push:
a0d0e21e 3045 LOP(OP_PUSH,XTERM);
79072805
LW		 3046
3047 case KEY_pop:
3048 UNI(OP_POP);
3049
a0d0e21e
LW		 3050 case KEY_pos:
3051 UNI(OP_POS);
3052
79072805 3053 case KEY_pack:
a0d0e21e 3054 LOP(OP_PACK,XTERM);
79072805
LW		 3055
3056 case KEY_package:
a0d0e21e 3057 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3058 OPERATOR(PACKAGE);
3059
3060 case KEY_pipe:
a0d0e21e 3061 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3062
3063 case KEY_q:
3064 s = scan_str(s);
3065 if (!s)
85e6fe83 3066 missingterm((char*)0);
79072805
LW		 3067 yylval.ival = OP_CONST;
3068 TERM(sublex_start());
3069
a0d0e21e
LW		 3070 case KEY_quotemeta:
3071 UNI(OP_QUOTEMETA);
3072
8990e307
LW		 3073 case KEY_qw:
3074 s = scan_str(s);
3075 if (!s)
85e6fe83 3076 missingterm((char*)0);
55497cff 3077 if (dowarn && SvLEN(lex_stuff)) {
3078 d = SvPV_force(lex_stuff, len);
3079 for (; len; --len, ++d) {
3080 if (*d == ',') {
3081 warn("Possible attempt to separate words with commas");
3082 break;
3083 }
3084 if (*d == '#') {
3085 warn("Possible attempt to put comments in qw() list");
3086 break;
3087 }
3088 }
3089 }
8990e307
LW		 3090 force_next(')');
3091 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3092 lex_stuff = Nullsv;
3093 force_next(THING);
3094 force_next(',');
3095 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3096 force_next(THING);
3097 force_next('(');
a0d0e21e
LW		 3098 yylval.ival = OP_SPLIT;
3099 CLINE;
3100 expect = XTERM;
3101 bufptr = s;
3102 last_lop = oldbufptr;
3103 last_lop_op = OP_SPLIT;
3104 return FUNC;
8990e307 3105
79072805
LW		 3106 case KEY_qq:
3107 s = scan_str(s);
3108 if (!s)
85e6fe83 3109 missingterm((char*)0);
a0d0e21e 3110 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3111 if (SvIVX(lex_stuff) == '\'')
3112 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3113 TERM(sublex_start());
3114
3115 case KEY_qx:
3116 s = scan_str(s);
3117 if (!s)
85e6fe83 3118 missingterm((char*)0);
79072805
LW		 3119 yylval.ival = OP_BACKTICK;
3120 set_csh();
3121 TERM(sublex_start());
3122
3123 case KEY_return:
3124 OLDLOP(OP_RETURN);
3125
3126 case KEY_require:
748a9306 3127 *tokenbuf = '\0';
a0d0e21e 3128 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3129 if (isIDFIRST(*tokenbuf))
89bfa8cd 3130 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3131 else if (*s == '<')
a0d0e21e 3132 yyerror("<> should be quotes");
463ee0b2 3133 UNI(OP_REQUIRE);
79072805
LW		 3134
3135 case KEY_reset:
3136 UNI(OP_RESET);
3137
3138 case KEY_redo:
a0d0e21e 3139 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3140 LOOPX(OP_REDO);
3141
3142 case KEY_rename:
a0d0e21e 3143 LOP(OP_RENAME,XTERM);
79072805
LW		 3144
3145 case KEY_rand:
3146 UNI(OP_RAND);
3147
3148 case KEY_rmdir:
3149 UNI(OP_RMDIR);
3150
3151 case KEY_rindex:
a0d0e21e 3152 LOP(OP_RINDEX,XTERM);
79072805
LW		 3153
3154 case KEY_read:
a0d0e21e 3155 LOP(OP_READ,XTERM);
79072805
LW		 3156
3157 case KEY_readdir:
3158 UNI(OP_READDIR);
3159
93a17b20
LW		 3160 case KEY_readline:
3161 set_csh();
3162 UNI(OP_READLINE);
3163
3164 case KEY_readpipe:
3165 set_csh();
3166 UNI(OP_BACKTICK);
3167
79072805
LW		 3168 case KEY_rewinddir:
3169 UNI(OP_REWINDDIR);
3170
3171 case KEY_recv:
a0d0e21e 3172 LOP(OP_RECV,XTERM);
79072805
LW		 3173
3174 case KEY_reverse:
a0d0e21e 3175 LOP(OP_REVERSE,XTERM);
79072805
LW		 3176
3177 case KEY_readlink:
3178 UNI(OP_READLINK);
3179
3180 case KEY_ref:
3181 UNI(OP_REF);
3182
3183 case KEY_s:
3184 s = scan_subst(s);
3185 if (yylval.opval)
3186 TERM(sublex_start());
3187 else
3188 TOKEN(1); /* force error */
3189
a0d0e21e
LW		 3190 case KEY_chomp:
3191 UNI(OP_CHOMP);
3192
79072805
LW		 3193 case KEY_scalar:
3194 UNI(OP_SCALAR);
3195
3196 case KEY_select:
a0d0e21e 3197 LOP(OP_SELECT,XTERM);
79072805
LW		 3198
3199 case KEY_seek:
a0d0e21e 3200 LOP(OP_SEEK,XTERM);
79072805
LW		 3201
3202 case KEY_semctl:
a0d0e21e 3203 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3204
3205 case KEY_semget:
a0d0e21e 3206 LOP(OP_SEMGET,XTERM);
79072805
LW		 3207
3208 case KEY_semop:
a0d0e21e 3209 LOP(OP_SEMOP,XTERM);
79072805
LW		 3210
3211 case KEY_send:
a0d0e21e 3212 LOP(OP_SEND,XTERM);
79072805
LW		 3213
3214 case KEY_setpgrp:
a0d0e21e 3215 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3216
3217 case KEY_setpriority:
a0d0e21e 3218 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3219
3220 case KEY_sethostent:
3221 FUN1(OP_SHOSTENT);
3222
3223 case KEY_setnetent:
3224 FUN1(OP_SNETENT);
3225
3226 case KEY_setservent:
3227 FUN1(OP_SSERVENT);
3228
3229 case KEY_setprotoent:
3230 FUN1(OP_SPROTOENT);
3231
3232 case KEY_setpwent:
3233 FUN0(OP_SPWENT);
3234
3235 case KEY_setgrent:
3236 FUN0(OP_SGRENT);
3237
3238 case KEY_seekdir:
a0d0e21e 3239 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3240
3241 case KEY_setsockopt:
a0d0e21e 3242 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3243
3244 case KEY_shift:
3245 UNI(OP_SHIFT);
3246
3247 case KEY_shmctl:
a0d0e21e 3248 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3249
3250 case KEY_shmget:
a0d0e21e 3251 LOP(OP_SHMGET,XTERM);
79072805
LW		 3252
3253 case KEY_shmread:
a0d0e21e 3254 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3255
3256 case KEY_shmwrite:
a0d0e21e 3257 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3258
3259 case KEY_shutdown:
a0d0e21e 3260 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3261
3262 case KEY_sin:
3263 UNI(OP_SIN);
3264
3265 case KEY_sleep:
3266 UNI(OP_SLEEP);
3267
3268 case KEY_socket:
a0d0e21e 3269 LOP(OP_SOCKET,XTERM);
79072805
LW		 3270
3271 case KEY_socketpair:
a0d0e21e 3272 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3273
3274 case KEY_sort:
3275 checkcomma(s,tokenbuf,"subroutine name");
3276 s = skipspace(s);
3277 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3278 croak("sort is now a reserved word");
3279 expect = XTERM;
a0d0e21e
LW		 3280 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3281 LOP(OP_SORT,XREF);
79072805
LW		 3282
3283 case KEY_split:
a0d0e21e 3284 LOP(OP_SPLIT,XTERM);
79072805
LW		 3285
3286 case KEY_sprintf:
a0d0e21e 3287 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3288
3289 case KEY_splice:
a0d0e21e 3290 LOP(OP_SPLICE,XTERM);
79072805
LW		 3291
3292 case KEY_sqrt:
3293 UNI(OP_SQRT);
3294
3295 case KEY_srand:
3296 UNI(OP_SRAND);
3297
3298 case KEY_stat:
3299 UNI(OP_STAT);
3300
3301 case KEY_study:
3302 sawstudy++;
3303 UNI(OP_STUDY);
3304
3305 case KEY_substr:
a0d0e21e 3306 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3307
3308 case KEY_format:
3309 case KEY_sub:
93a17b20 3310 really_sub:
79072805 3311 s = skipspace(s);
4633a7c4 3312
463ee0b2
LW		 3313 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3314 char tmpbuf[128];
4633a7c4 3315 expect = XBLOCK;
463ee0b2
LW		 3316 d = scan_word(s, tmpbuf, TRUE, &len);
3317 if (strchr(tmpbuf, ':'))
3318 sv_setpv(subname, tmpbuf);
3319 else {
3320 sv_setsv(subname,curstname);
8990e307 3321 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3322 sv_catpvn(subname,tmpbuf,len);
3323 }
a0d0e21e 3324 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3325 s = skipspace(s);
79072805 3326 }
4633a7c4
LW		 3327 else {
3328 expect = XTERMBLOCK;
79072805 3329 sv_setpv(subname,"?");
4633a7c4
LW		 3330 }
3331
3332 if (tmp == KEY_format) {
3333 s = skipspace(s);
3334 if (*s == '=')
3335 lex_formbrack = lex_brackets + 1;
3336 OPERATOR(FORMAT);
3337 }
79072805 3338
4633a7c4
LW		 3339 /* Look for a prototype */
3340 if (*s == '(') {
3341 s = scan_str(s);
3342 if (!s) {
3343 if (lex_stuff)
3344 SvREFCNT_dec(lex_stuff);
3345 lex_stuff = Nullsv;
3346 croak("Prototype not terminated");
3347 }
3348 nexttoke++;
3349 nextval[1] = nextval[0];
3350 nexttype[1] = nexttype[0];
3351 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3352 nexttype[0] = THING;
3353 if (nexttoke == 1) {
3354 lex_defer = lex_state;
3355 lex_expect = expect;
3356 lex_state = LEX_KNOWNEXT;
3357 }
3358 lex_stuff = Nullsv;
3359 }
79072805 3360
4633a7c4
LW		 3361 if (*SvPV(subname,na) == '?') {
3362 sv_setpv(subname,"__ANON__");
3363 TOKEN(ANONSUB);
3364 }
3365 PREBLOCK(SUB);
79072805
LW		 3366
3367 case KEY_system:
3368 set_csh();
a0d0e21e 3369 LOP(OP_SYSTEM,XREF);
79072805
LW		 3370
3371 case KEY_symlink:
a0d0e21e 3372 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3373
3374 case KEY_syscall:
a0d0e21e 3375 LOP(OP_SYSCALL,XTERM);
79072805 3376
c07a80fd 3377 case KEY_sysopen:
3378 LOP(OP_SYSOPEN,XTERM);
3379
79072805 3380 case KEY_sysread:
a0d0e21e 3381 LOP(OP_SYSREAD,XTERM);
79072805
LW		 3382
3383 case KEY_syswrite:
a0d0e21e 3384 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3385
3386 case KEY_tr:
3387 s = scan_trans(s);
3388 TERM(sublex_start());
3389
3390 case KEY_tell:
3391 UNI(OP_TELL);
3392
3393 case KEY_telldir:
3394 UNI(OP_TELLDIR);
3395
463ee0b2 3396 case KEY_tie:
a0d0e21e 3397 LOP(OP_TIE,XTERM);
463ee0b2 3398
c07a80fd 3399 case KEY_tied:
3400 UNI(OP_TIED);
3401
79072805
LW		 3402 case KEY_time:
3403 FUN0(OP_TIME);
3404
3405 case KEY_times:
3406 FUN0(OP_TMS);
3407
3408 case KEY_truncate:
a0d0e21e 3409 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3410
3411 case KEY_uc:
3412 UNI(OP_UC);
3413
3414 case KEY_ucfirst:
3415 UNI(OP_UCFIRST);
3416
463ee0b2
LW		 3417 case KEY_untie:
3418 UNI(OP_UNTIE);
3419
79072805
LW		 3420 case KEY_until:
3421 yylval.ival = curcop->cop_line;
3422 OPERATOR(UNTIL);
3423
3424 case KEY_unless:
3425 yylval.ival = curcop->cop_line;
3426 OPERATOR(UNLESS);
3427
3428 case KEY_unlink:
a0d0e21e 3429 LOP(OP_UNLINK,XTERM);
79072805
LW		 3430
3431 case KEY_undef:
3432 UNI(OP_UNDEF);
3433
3434 case KEY_unpack:
a0d0e21e 3435 LOP(OP_UNPACK,XTERM);
79072805
LW		 3436
3437 case KEY_utime:
a0d0e21e 3438 LOP(OP_UTIME,XTERM);
79072805
LW		 3439
3440 case KEY_umask:
748a9306
LW		 3441 if (dowarn) {
3442 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3443 if (*d != '0' && isDIGIT(*d))
3444 yywarn("umask: argument is missing initial 0");
3445 }
79072805
LW		 3446 UNI(OP_UMASK);
3447
3448 case KEY_unshift:
a0d0e21e
LW		 3449 LOP(OP_UNSHIFT,XTERM);
3450
3451 case KEY_use:
3452 if (expect != XSTATE)
3453 yyerror("\"use\" not allowed in expression");
89bfa8cd 3454 s = skipspace(s);
3455 if(isDIGIT(*s)) {
3456 s = force_version(s);
3457 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3458 nextval[nexttoke].opval = Nullop;
3459 force_next(WORD);
3460 }
3461 }
3462 else {
3463 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3464 s = force_version(s);
3465 }
a0d0e21e
LW		 3466 yylval.ival = 1;
3467 OPERATOR(USE);
79072805
LW		 3468
3469 case KEY_values:
3470 UNI(OP_VALUES);
3471
3472 case KEY_vec:
3473 sawvec = TRUE;
a0d0e21e 3474 LOP(OP_VEC,XTERM);
79072805
LW		 3475
3476 case KEY_while:
3477 yylval.ival = curcop->cop_line;
3478 OPERATOR(WHILE);
3479
3480 case KEY_warn:
a0d0e21e
LW		 3481 hints |= HINT_BLOCK_SCOPE;
3482 LOP(OP_WARN,XTERM);
79072805
LW		 3483
3484 case KEY_wait:
3485 FUN0(OP_WAIT);
3486
3487 case KEY_waitpid:
a0d0e21e 3488 LOP(OP_WAITPID,XTERM);
79072805
LW		 3489
3490 case KEY_wantarray:
3491 FUN0(OP_WANTARRAY);
3492
3493 case KEY_write:
85e6fe83 3494 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3495 UNI(OP_ENTERWRITE);
3496
3497 case KEY_x:
3498 if (expect == XOPERATOR)
3499 Mop(OP_REPEAT);
3500 check_uni();
3501 goto just_a_word;
3502
a0d0e21e
LW		 3503 case KEY_xor:
3504 yylval.ival = OP_XOR;
3505 OPERATOR(OROP);
3506
79072805
LW		 3507 case KEY_y:
3508 s = scan_trans(s);
3509 TERM(sublex_start());
3510 }
3511 }
3512}
3513
3514I32
3515keyword(d, len)
3516register char *d;
3517I32 len;
3518{
3519 switch (*d) {
3520 case '_':
3521 if (d[1] == '_') {
a0d0e21e
LW		 3522 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3523 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
e50aee73 3524 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3525 if (strEQ(d,"__END__")) return KEY___END__;
3526 }
3527 break;
8990e307
LW		 3528 case 'A':
3529 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3530 break;
79072805 3531 case 'a':
463ee0b2
LW		 3532 switch (len) {
3533 case 3:
a0d0e21e
LW		 3534 if (strEQ(d,"and")) return -KEY_and;
3535 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3536 break;
463ee0b2 3537 case 5:
a0d0e21e
LW		 3538 if (strEQ(d,"alarm")) return -KEY_alarm;
3539 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3540 break;
3541 case 6:
a0d0e21e 3542 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3543 break;
3544 }
79072805
LW		 3545 break;
3546 case 'B':
3547 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3548 break;
79072805 3549 case 'b':
a0d0e21e
LW		 3550 if (strEQ(d,"bless")) return -KEY_bless;
3551 if (strEQ(d,"bind")) return -KEY_bind;
3552 if (strEQ(d,"binmode")) return -KEY_binmode;
3553 break;
3554 case 'C':
3555 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3556 break;
3557 case 'c':
3558 switch (len) {
3559 case 3:
a0d0e21e
LW		 3560 if (strEQ(d,"cmp")) return -KEY_cmp;
3561 if (strEQ(d,"chr")) return -KEY_chr;
3562 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3563 break;
3564 case 4:
3565 if (strEQ(d,"chop")) return KEY_chop;
3566 break;
3567 case 5:
a0d0e21e
LW		 3568 if (strEQ(d,"close")) return -KEY_close;
3569 if (strEQ(d,"chdir")) return -KEY_chdir;
3570 if (strEQ(d,"chomp")) return KEY_chomp;
3571 if (strEQ(d,"chmod")) return -KEY_chmod;
3572 if (strEQ(d,"chown")) return -KEY_chown;
3573 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3574 break;
3575 case 6:
a0d0e21e
LW		 3576 if (strEQ(d,"chroot")) return -KEY_chroot;
3577 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3578 break;
3579 case 7:
a0d0e21e 3580 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3581 break;
3582 case 8:
a0d0e21e
LW		 3583 if (strEQ(d,"closedir")) return -KEY_closedir;
3584 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3585 break;
3586 }
3587 break;
ed6116ce
LW		 3588 case 'D':
3589 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3590 break;
79072805
LW		 3591 case 'd':
3592 switch (len) {
3593 case 2:
3594 if (strEQ(d,"do")) return KEY_do;
3595 break;
3596 case 3:
a0d0e21e 3597 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3598 break;
3599 case 4:
a0d0e21e 3600 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3601 break;
3602 case 6:
3603 if (strEQ(d,"delete")) return KEY_delete;
3604 break;
3605 case 7:
3606 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3607 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3608 break;
3609 case 8:
a0d0e21e 3610 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3611 break;
3612 }
3613 break;
3614 case 'E':
a0d0e21e 3615 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3616 if (strEQ(d,"END")) return KEY_END;
3617 break;
3618 case 'e':
3619 switch (len) {
3620 case 2:
a0d0e21e 3621 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3622 break;
3623 case 3:
a0d0e21e
LW		 3624 if (strEQ(d,"eof")) return -KEY_eof;
3625 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3626 break;
3627 case 4:
3628 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3629 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3630 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3631 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3632 if (strEQ(d,"each")) return KEY_each;
3633 break;
3634 case 5:
3635 if (strEQ(d,"elsif")) return KEY_elsif;
3636 break;
a0d0e21e
LW		 3637 case 6:
3638 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3639 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3640 break;
79072805 3641 case 8:
a0d0e21e
LW		 3642 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3643 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3644 break;
3645 case 9:
a0d0e21e 3646 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3647 break;
3648 case 10:
a0d0e21e
LW		 3649 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3650 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3651 break;
3652 case 11:
a0d0e21e 3653 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3654 break;
a687059c 3655 }
a687059c 3656 break;
79072805
LW		 3657 case 'f':
3658 switch (len) {
3659 case 3:
3660 if (strEQ(d,"for")) return KEY_for;
3661 break;
3662 case 4:
a0d0e21e 3663 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3664 break;
3665 case 5:
a0d0e21e
LW		 3666 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3667 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3668 break;
3669 case 6:
3670 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3671 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3672 break;
3673 case 7:
3674 if (strEQ(d,"foreach")) return KEY_foreach;
3675 break;
3676 case 8:
a0d0e21e 3677 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3678 break;
378cc40b 3679 }
a687059c 3680 break;
79072805
LW		 3681 case 'G':
3682 if (len == 2) {
a0d0e21e
LW		 3683 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3684 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3685 }
a687059c 3686 break;
79072805 3687 case 'g':
a687059c
LW		 3688 if (strnEQ(d,"get",3)) {
3689 d += 3;
3690 if (*d == 'p') {
79072805
LW		 3691 switch (len) {
3692 case 7:
a0d0e21e
LW		 3693 if (strEQ(d,"ppid")) return -KEY_getppid;
3694 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3695 break;
3696 case 8:
a0d0e21e
LW		 3697 if (strEQ(d,"pwent")) return -KEY_getpwent;
3698 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3699 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3700 break;
3701 case 11:
a0d0e21e
LW		 3702 if (strEQ(d,"peername")) return -KEY_getpeername;
3703 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3704 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3705 break;
3706 case 14:
a0d0e21e 3707 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3708 break;
3709 case 16:
a0d0e21e 3710 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3711 break;
3712 }
a687059c
LW		 3713 }
3714 else if (*d == 'h') {
a0d0e21e
LW		 3715 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3716 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3717 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3718 }
3719 else if (*d == 'n') {
a0d0e21e
LW		 3720 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3721 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3722 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3723 }
3724 else if (*d == 's') {
a0d0e21e
LW		 3725 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3726 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3727 if (strEQ(d,"servent")) return -KEY_getservent;
3728 if (strEQ(d,"sockname")) return -KEY_getsockname;
3729 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3730 }
3731 else if (*d == 'g') {
a0d0e21e
LW		 3732 if (strEQ(d,"grent")) return -KEY_getgrent;
3733 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3734 if (strEQ(d,"grgid")) return -KEY_getgrgid;
a687059c
LW		 3735 }
3736 else if (*d == 'l') {
a0d0e21e 3737 if (strEQ(d,"login")) return -KEY_getlogin;
a687059c 3738 }
a0d0e21e 3739 else if (strEQ(d,"c")) return -KEY_getc;
79072805 3740 break;
a687059c 3741 }
79072805
LW		 3742 switch (len) {
3743 case 2:
a0d0e21e
LW		 3744 if (strEQ(d,"gt")) return -KEY_gt;
3745 if (strEQ(d,"ge")) return -KEY_ge;
79072805
LW		 3746 break;
3747 case 4:
3748 if (strEQ(d,"grep")) return KEY_grep;
3749 if (strEQ(d,"goto")) return KEY_goto;
a0d0e21e 3750 if (strEQ(d,"glob")) return -KEY_glob;
79072805
LW		 3751 break;
3752 case 6:
a0d0e21e 3753 if (strEQ(d,"gmtime")) return -KEY_gmtime;
79072805 3754 break;
378cc40b 3755 }
a687059c 3756 break;
79072805 3757 case 'h':
a0d0e21e 3758 if (strEQ(d,"hex")) return -KEY_hex;
a687059c 3759 break;
79072805
LW		 3760 case 'i':
3761 switch (len) {
3762 case 2:
3763 if (strEQ(d,"if")) return KEY_if;
3764 break;
3765 case 3:
a0d0e21e 3766 if (strEQ(d,"int")) return -KEY_int;
79072805
LW		 3767 break;
3768 case 5:
a0d0e21e
LW		 3769 if (strEQ(d,"index")) return -KEY_index;
3770 if (strEQ(d,"ioctl")) return -KEY_ioctl;
79072805
LW		 3771 break;
3772 }
a687059c 3773 break;
79072805 3774 case 'j':
a0d0e21e 3775 if (strEQ(d,"join")) return -KEY_join;
a687059c 3776 break;
79072805
LW		 3777 case 'k':
3778 if (len == 4) {
3779 if (strEQ(d,"keys")) return KEY_keys;
a0d0e21e 3780 if (strEQ(d,"kill")) return -KEY_kill;
663a0e37 3781 }
79072805
LW		 3782 break;
3783 case 'L':
3784 if (len == 2) {
a0d0e21e
LW		 3785 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3786 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
378cc40b 3787 }
79072805
LW		 3788 break;
3789 case 'l':
3790 switch (len) {
3791 case 2:
a0d0e21e
LW		 3792 if (strEQ(d,"lt")) return -KEY_lt;
3793 if (strEQ(d,"le")) return -KEY_le;
3794 if (strEQ(d,"lc")) return -KEY_lc;
79072805
LW		 3795 break;
3796 case 3:
a0d0e21e 3797 if (strEQ(d,"log")) return -KEY_log;
79072805
LW		 3798 break;
3799 case 4:
3800 if (strEQ(d,"last")) return KEY_last;
a0d0e21e 3801 if (strEQ(d,"link")) return -KEY_link;
395c3793 3802 break;
79072805
LW		 3803 case 5:
3804 if (strEQ(d,"local")) return KEY_local;
a0d0e21e 3805 if (strEQ(d,"lstat")) return -KEY_lstat;
79072805
LW		 3806 break;
3807 case 6:
a0d0e21e
LW		 3808 if (strEQ(d,"length")) return -KEY_length;
3809 if (strEQ(d,"listen")) return -KEY_listen;
79072805
LW		 3810 break;
3811 case 7:
a0d0e21e 3812 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
79072805
LW		 3813 break;
3814 case 9:
a0d0e21e 3815 if (strEQ(d,"localtime")) return -KEY_localtime;
395c3793
LW		 3816 break;
3817 }
a687059c 3818 break;
79072805
LW		 3819 case 'm':
3820 switch (len) {
3821 case 1: return KEY_m;
93a17b20
LW		 3822 case 2:
3823 if (strEQ(d,"my")) return KEY_my;
3824 break;
a0d0e21e
LW		 3825 case 3:
3826 if (strEQ(d,"map")) return KEY_map;
3827 break;
79072805 3828 case 5:
a0d0e21e 3829 if (strEQ(d,"mkdir")) return -KEY_mkdir;
79072805
LW		 3830 break;
3831 case 6:
a0d0e21e
LW		 3832 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3833 if (strEQ(d,"msgget")) return -KEY_msgget;
3834 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3835 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
79072805
LW		 3836 break;
3837 }
a687059c 3838 break;
79072805 3839 case 'N':
a0d0e21e 3840 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
a687059c 3841 break;
79072805
LW		 3842 case 'n':
3843 if (strEQ(d,"next")) return KEY_next;
a0d0e21e
LW		 3844 if (strEQ(d,"ne")) return -KEY_ne;
3845 if (strEQ(d,"not")) return -KEY_not;
3846 if (strEQ(d,"no")) return KEY_no;
a687059c 3847 break;
79072805
LW		 3848 case 'o':
3849 switch (len) {
463ee0b2 3850 case 2:
a0d0e21e 3851 if (strEQ(d,"or")) return -KEY_or;
463ee0b2 3852 break;
79072805 3853 case 3:
a0d0e21e
LW		 3854 if (strEQ(d,"ord")) return -KEY_ord;
3855 if (strEQ(d,"oct")) return -KEY_oct;
79072805
LW		 3856 break;
3857 case 4:
a0d0e21e 3858 if (strEQ(d,"open")) return -KEY_open;
79072805
LW		 3859 break;
3860 case 7:
a0d0e21e 3861 if (strEQ(d,"opendir")) return -KEY_opendir;
79072805 3862 break;
fe14fcc3 3863 }
a687059c 3864 break;
79072805
LW		 3865 case 'p':
3866 switch (len) {
3867 case 3:
3868 if (strEQ(d,"pop")) return KEY_pop;
a0d0e21e 3869 if (strEQ(d,"pos")) return KEY_pos;
79072805
LW		 3870 break;
3871 case 4:
3872 if (strEQ(d,"push")) return KEY_push;
a0d0e21e
LW		 3873 if (strEQ(d,"pack")) return -KEY_pack;
3874 if (strEQ(d,"pipe")) return -KEY_pipe;
79072805
LW		 3875 break;
3876 case 5:
3877 if (strEQ(d,"print")) return KEY_print;
3878 break;
3879 case 6:
3880 if (strEQ(d,"printf")) return KEY_printf;
3881 break;
3882 case 7:
3883 if (strEQ(d,"package")) return KEY_package;
3884 break;
c07a80fd 3885 case 9:
3886 if (strEQ(d,"prototype")) return KEY_prototype;
663a0e37 3887 }
79072805
LW		 3888 break;
3889 case 'q':
3890 if (len <= 2) {
3891 if (strEQ(d,"q")) return KEY_q;
3892 if (strEQ(d,"qq")) return KEY_qq;
8990e307 3893 if (strEQ(d,"qw")) return KEY_qw;
79072805 3894 if (strEQ(d,"qx")) return KEY_qx;
663a0e37 3895 }
a0d0e21e 3896 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
79072805
LW		 3897 break;
3898 case 'r':
3899 switch (len) {
3900 case 3:
a0d0e21e 3901 if (strEQ(d,"ref")) return -KEY_ref;
79072805
LW		 3902 break;
3903 case 4:
a0d0e21e<