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Fix example #4 in perlXStut
[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{
6ca21dd3 289 doextract = FALSE;
463ee0b2
LW		 290}
291
292static void
6d5fb7e3
CS		 293restore_rsfp(f)
294void *f;
295{
760ac839 296 PerlIO *fp = (PerlIO*)f;
6d5fb7e3 297
760ac839
LW		 298 if (rsfp == PerlIO_stdin())
299 PerlIO_clearerr(rsfp);
a5f75d66 300 else if (rsfp && (rsfp != fp))
760ac839 301 PerlIO_close(rsfp);
6d5fb7e3
CS		 302 rsfp = fp;
303}
304
305static void
463ee0b2
LW		 306incline(s)
307char *s;
308{
309 char *t;
310 char *n;
311 char ch;
312 int sawline = 0;
313
314 curcop->cop_line++;
315 if (*s++ != '#')
316 return;
317 while (*s == ' ' || *s == '\t') s++;
318 if (strnEQ(s, "line ", 5)) {
319 s += 5;
320 sawline = 1;
321 }
322 if (!isDIGIT(*s))
323 return;
324 n = s;
325 while (isDIGIT(*s))
326 s++;
327 while (*s == ' ' || *s == '\t')
328 s++;
329 if (*s == '"' && (t = strchr(s+1, '"')))
330 s++;
331 else {
332 if (!sawline)
333 return; /* false alarm */
334 for (t = s; !isSPACE(*t); t++) ;
335 }
336 ch = *t;
337 *t = '\0';
338 if (t - s > 0)
339 curcop->cop_filegv = gv_fetchfile(s);
340 else
341 curcop->cop_filegv = gv_fetchfile(origfilename);
342 *t = ch;
343 curcop->cop_line = atoi(n)-1;
344}
345
8990e307 346static char *
a687059c
LW		 347skipspace(s)
348register char *s;
349{
85e6fe83 350 if (lex_formbrack && lex_brackets <= lex_formbrack) {
463ee0b2
LW		 351 while (s < bufend && (*s == ' ' || *s == '\t'))
352 s++;
353 return s;
354 }
355 for (;;) {
fd049845 356 STRLEN prevlen;
463ee0b2
LW		 357 while (s < bufend && isSPACE(*s))
358 s++;
359 if (s < bufend && *s == '#') {
360 while (s < bufend && *s != '\n')
361 s++;
362 if (s < bufend)
363 s++;
364 }
a0d0e21e 365 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
463ee0b2 366 return s;
fd049845 367 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
a0d0e21e
LW		 368 if (minus_n || minus_p) {
369 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
370 sv_catpv(linestr,";}");
371 minus_n = minus_p = 0;
372 }
373 else
374 sv_setpv(linestr,";");
fd049845 375 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 376 bufend = SvPVX(linestr) + SvCUR(linestr);
377 if (preprocess && !in_eval)
8990e307 378 (void)my_pclose(rsfp);
760ac839
LW		 379 else if ((PerlIO*)rsfp == PerlIO_stdin())
380 PerlIO_clearerr(rsfp);
8990e307 381 else
760ac839 382 (void)PerlIO_close(rsfp);
8990e307 383 rsfp = Nullfp;
463ee0b2
LW		 384 return s;
385 }
fd049845 386 linestart = bufptr = s + prevlen;
387 bufend = s + SvCUR(linestr);
388 s = bufptr;
a0d0e21e 389 incline(s);
8990e307
LW		 390 if (perldb && curstash != debstash) {
391 SV *sv = NEWSV(85,0);
392
393 sv_upgrade(sv, SVt_PVMG);
fd049845 394 sv_setpvn(sv,bufptr,bufend-bufptr);
8990e307
LW		 395 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
396 }
463ee0b2 397 }
a687059c 398}
378cc40b 399
8990e307 400static void
2f3197b3
LW		 401check_uni() {
402 char *s;
403 char ch;
a0d0e21e 404 char *t;
2f3197b3
LW		 405
406 if (oldoldbufptr != last_uni)
407 return;
408 while (isSPACE(*last_uni))
409 last_uni++;
e334a159 410 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
a0d0e21e
LW		 411 if ((t = strchr(s, '(')) && t < bufptr)
412 return;
2f3197b3
LW		 413 ch = *s;
414 *s = '\0';
415 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
416 *s = ch;
417}
418
ffed7fef
LW		 419#ifdef CRIPPLED_CC
420
421#undef UNI
ffed7fef 422#define UNI(f) return uni(f,s)
ffed7fef 423
8990e307 424static int
ffed7fef 425uni(f,s)
79072805 426I32 f;
ffed7fef
LW		 427char *s;
428{
429 yylval.ival = f;
79072805 430 expect = XTERM;
ffed7fef 431 bufptr = s;
2f3197b3 432 last_uni = oldbufptr;
a0d0e21e 433 last_lop_op = f;
ffed7fef
LW		 434 if (*s == '(')
435 return FUNC1;
436 s = skipspace(s);
437 if (*s == '(')
438 return FUNC1;
439 else
440 return UNIOP;
441}
442
a0d0e21e
LW		 443#endif /* CRIPPLED_CC */
444
445#define LOP(f,x) return lop(f,x,s)
446
8990e307 447static I32
a0d0e21e 448lop(f,x,s)
79072805 449I32 f;
a0d0e21e 450expectation x;
ffed7fef
LW		 451char *s;
452{
79072805 453 yylval.ival = f;
35c8bce7 454 CLINE;
a0d0e21e 455 expect = x;
79072805 456 bufptr = s;
8990e307
LW		 457 last_lop = oldbufptr;
458 last_lop_op = f;
a0d0e21e
LW		 459 if (nexttoke)
460 return LSTOP;
79072805
LW		 461 if (*s == '(')
462 return FUNC;
463 s = skipspace(s);
464 if (*s == '(')
465 return FUNC;
466 else
467 return LSTOP;
468}
469
8990e307 470static void
79072805
LW		 471force_next(type)
472I32 type;
473{
474 nexttype[nexttoke] = type;
475 nexttoke++;
476 if (lex_state != LEX_KNOWNEXT) {
477 lex_defer = lex_state;
463ee0b2 478 lex_expect = expect;
79072805
LW		 479 lex_state = LEX_KNOWNEXT;
480 }
481}
482
8990e307 483static char *
a0d0e21e 484force_word(start,token,check_keyword,allow_pack,allow_tick)
463ee0b2 485register char *start;
79072805 486int token;
463ee0b2 487int check_keyword;
a0d0e21e 488int allow_pack;
463ee0b2 489int allow_tick;
79072805 490{
463ee0b2
LW		 491 register char *s;
492 STRLEN len;
493
494 start = skipspace(start);
495 s = start;
a0d0e21e
LW		 496 if (isIDFIRST(*s) ||
497 (allow_pack && *s == ':') ||
498 (allow_tick && *s == '\'') )
499 {
500 s = scan_word(s, tokenbuf, allow_pack, &len);
463ee0b2
LW		 501 if (check_keyword && keyword(tokenbuf, len))
502 return start;
503 if (token == METHOD) {
504 s = skipspace(s);
505 if (*s == '(')
506 expect = XTERM;
507 else {
508 expect = XOPERATOR;
509 force_next(')');
510 force_next('(');
511 }
79072805 512 }
463ee0b2 513 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
8990e307 514 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
79072805
LW		 515 force_next(token);
516 }
517 return s;
518}
519
8990e307 520static void
a0d0e21e 521force_ident(s, kind)
79072805 522register char *s;
a0d0e21e 523int kind;
79072805
LW		 524{
525 if (s && *s) {
748a9306
LW		 526 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
527 nextval[nexttoke].opval = op;
79072805 528 force_next(WORD);
748a9306
LW		 529 if (kind) {
530 op->op_private = OPpCONST_ENTERED;
55497cff 531 /* XXX see note in pp_entereval() for why we forgo typo
532 warnings if the symbol must be introduced in an eval.
533 GSAR 96-10-12 */
534 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
a0d0e21e
LW		 535 kind == '$' ? SVt_PV :
536 kind == '@' ? SVt_PVAV :
537 kind == '%' ? SVt_PVHV :
538 SVt_PVGV
539 );
748a9306 540 }
79072805
LW		 541 }
542}
543
89bfa8cd 544static char *
545force_version(s)
546char *s;
547{
548 OP *version = Nullop;
549
550 s = skipspace(s);
551
552 /* default VERSION number -- GBARR */
553
554 if(isDIGIT(*s)) {
555 char *d;
556 int c;
55497cff 557 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
89bfa8cd 558 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
559 s = scan_num(s);
560 /* real VERSION number -- GBARR */
561 version = yylval.opval;
562 }
563 }
564
565 /* NOTE: The parser sees the package name and the VERSION swapped */
566 nextval[nexttoke].opval = version;
567 force_next(WORD);
568
569 return (s);
570}
571
8990e307 572static SV *
79072805
LW		 573q(sv)
574SV *sv;
575{
576 register char *s;
577 register char *send;
578 register char *d;
463ee0b2 579 STRLEN len;
79072805
LW		 580
581 if (!SvLEN(sv))
582 return sv;
583
a0d0e21e 584 s = SvPV_force(sv, len);
748a9306
LW		 585 if (SvIVX(sv) == -1)
586 return sv;
463ee0b2 587 send = s + len;
79072805
LW		 588 while (s < send && *s != '\\')
589 s++;
590 if (s == send)
591 return sv;
592 d = s;
79072805
LW		 593 while (s < send) {
594 if (*s == '\\') {
a0d0e21e 595 if (s + 1 < send && (s[1] == '\\'))
79072805
LW		 596 s++; /* all that, just for this */
597 }
598 *d++ = *s++;
599 }
600 *d = '\0';
463ee0b2 601 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 602
603 return sv;
604}
605
8990e307 606static I32
79072805
LW		 607sublex_start()
608{
609 register I32 op_type = yylval.ival;
79072805
LW		 610
611 if (op_type == OP_NULL) {
612 yylval.opval = lex_op;
613 lex_op = Nullop;
614 return THING;
615 }
616 if (op_type == OP_CONST || op_type == OP_READLINE) {
617 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
618 lex_stuff = Nullsv;
619 return THING;
620 }
621
55497cff 622 sublex_info.super_state = lex_state;
623 sublex_info.sub_inwhat = op_type;
624 sublex_info.sub_op = lex_op;
625 lex_state = LEX_INTERPPUSH;
626
627 expect = XTERM;
628 if (lex_op) {
629 yylval.opval = lex_op;
630 lex_op = Nullop;
631 return PMFUNC;
632 }
633 else
634 return FUNC;
635}
636
637static I32
638sublex_push()
639{
79072805 640 push_scope();
55497cff 641
642 lex_state = sublex_info.super_state;
643 SAVEI32(lex_dojoin);
644 SAVEI32(lex_brackets);
645 SAVEI32(lex_fakebrack);
646 SAVEI32(lex_casemods);
647 SAVEI32(lex_starts);
648 SAVEI32(lex_state);
a0d0e21e 649 SAVESPTR(lex_inpat);
55497cff 650 SAVEI32(lex_inwhat);
651 SAVEI16(curcop->cop_line);
85e6fe83
LW		 652 SAVEPPTR(bufptr);
653 SAVEPPTR(oldbufptr);
654 SAVEPPTR(oldoldbufptr);
fd049845 655 SAVEPPTR(linestart);
79072805 656 SAVESPTR(linestr);
85e6fe83 657 SAVEPPTR(lex_brackstack);
a0d0e21e 658 SAVEPPTR(lex_casestack);
79072805
LW		 659
660 linestr = lex_stuff;
661 lex_stuff = Nullsv;
662
fd049845 663 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 664 bufend += SvCUR(linestr);
8990e307 665 SAVEFREESV(linestr);
79072805
LW		 666
667 lex_dojoin = FALSE;
668 lex_brackets = 0;
669 lex_fakebrack = 0;
8990e307 670 New(899, lex_brackstack, 120, char);
a0d0e21e 671 New(899, lex_casestack, 12, char);
8990e307 672 SAVEFREEPV(lex_brackstack);
a0d0e21e 673 SAVEFREEPV(lex_casestack);
79072805 674 lex_casemods = 0;
a0d0e21e 675 *lex_casestack = '\0';
79072805
LW		 676 lex_starts = 0;
677 lex_state = LEX_INTERPCONCAT;
678 curcop->cop_line = multi_start;
679
55497cff 680 lex_inwhat = sublex_info.sub_inwhat;
681 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
682 lex_inpat = sublex_info.sub_op;
79072805 683 else
55497cff 684 lex_inpat = Nullop;
79072805 685
55497cff 686 return '(';
79072805
LW		 687}
688
8990e307 689static I32
79072805
LW		 690sublex_done()
691{
692 if (!lex_starts++) {
693 expect = XOPERATOR;
93a17b20 694 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 695 return THING;
696 }
697
698 if (lex_casemods) { /* oops, we've got some unbalanced parens */
699 lex_state = LEX_INTERPCASEMOD;
700 return yylex();
701 }
702
79072805
LW		 703 /* Is there a right-hand side to take care of? */
704 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
705 linestr = lex_repl;
706 lex_inpat = 0;
fd049845 707 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 708 bufend += SvCUR(linestr);
8990e307 709 SAVEFREESV(linestr);
79072805
LW		 710 lex_dojoin = FALSE;
711 lex_brackets = 0;
712 lex_fakebrack = 0;
713 lex_casemods = 0;
a0d0e21e 714 *lex_casestack = '\0';
79072805
LW		 715 lex_starts = 0;
716 if (SvCOMPILED(lex_repl)) {
717 lex_state = LEX_INTERPNORMAL;
718 lex_starts++;
719 }
720 else
721 lex_state = LEX_INTERPCONCAT;
722 lex_repl = Nullsv;
723 return ',';
ffed7fef
LW		 724 }
725 else {
79072805 726 pop_scope();
463ee0b2 727 bufend = SvPVX(linestr);
79072805
LW		 728 bufend += SvCUR(linestr);
729 expect = XOPERATOR;
730 return ')';
ffed7fef
LW		 731 }
732}
733
8990e307 734static char *
79072805
LW		 735scan_const(start)
736char *start;
737{
738 register char *send = bufend;
739 SV *sv = NEWSV(93, send - start);
740 register char *s = start;
463ee0b2 741 register char *d = SvPVX(sv);
79072805
LW		 742 bool dorange = FALSE;
743 I32 len;
744 char *leave =
745 lex_inpat
748a9306 746 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 747 : (lex_inwhat & OP_TRANS)
748 ? ""
749 : "";
750
751 while (s < send || dorange) {
752 if (lex_inwhat == OP_TRANS) {
753 if (dorange) {
754 I32 i;
755 I32 max;
463ee0b2 756 i = d - SvPVX(sv);
79072805 757 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 758 d = SvPVX(sv) + i;
79072805 759 d -= 2;
91b7def8 760 max = (U8)d[1];
761 for (i = (U8)*d; i <= max; i++)
79072805
LW		 762 *d++ = i;
763 dorange = FALSE;
764 continue;
765 }
766 else if (*s == '-' && s+1 < send && s != start) {
767 dorange = TRUE;
768 s++;
769 }
770 }
748a9306
LW		 771 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
772 while (s < send && *s != ')')
773 *d++ = *s++;
774 }
775 else if (*s == '#' && lex_inpat &&
776 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
777 while (s+1 < send && *s != '\n')
778 *d++ = *s++;
779 }
a0d0e21e 780 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 781 break;
782 else if (*s == '$') {
783 if (!lex_inpat) /* not a regexp, so $ must be var */
784 break;
a0d0e21e 785 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 786 break; /* in regexp, $ might be tail anchor */
787 }
788 if (*s == '\\' && s+1 < send) {
789 s++;
93a17b20 790 if (*s && strchr(leave, *s)) {
79072805
LW		 791 *d++ = '\\';
792 *d++ = *s++;
793 continue;
794 }
795 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 796 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 797 {
a0d0e21e
LW		 798 if (dowarn)
799 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 800 *--s = '$';
801 break;
802 }
a0d0e21e 803 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 804 --s;
805 break;
806 }
807 switch (*s) {
808 case '-':
809 if (lex_inwhat == OP_TRANS) {
810 *d++ = *s++;
811 continue;
812 }
813 /* FALL THROUGH */
814 default:
815 *d++ = *s++;
816 continue;
817 case '0': case '1': case '2': case '3':
818 case '4': case '5': case '6': case '7':
819 *d++ = scan_oct(s, 3, &len);
820 s += len;
821 continue;
822 case 'x':
823 *d++ = scan_hex(++s, 2, &len);
824 s += len;
825 continue;
826 case 'c':
827 s++;
bbce6d69 828 len = *s++;
829 *d++ = toCTRL(len);
79072805
LW		 830 continue;
831 case 'b':
832 *d++ = '\b';
833 break;
834 case 'n':
835 *d++ = '\n';
836 break;
837 case 'r':
838 *d++ = '\r';
839 break;
840 case 'f':
841 *d++ = '\f';
842 break;
843 case 't':
844 *d++ = '\t';
845 break;
846 case 'e':
847 *d++ = '\033';
848 break;
849 case 'a':
850 *d++ = '\007';
851 break;
852 }
853 s++;
854 continue;
855 }
856 *d++ = *s++;
857 }
858 *d = '\0';
463ee0b2 859 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 860 SvPOK_on(sv);
861
862 if (SvCUR(sv) + 5 < SvLEN(sv)) {
863 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 864 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 865 }
866 if (s > bufptr)
867 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
868 else
8990e307 869 SvREFCNT_dec(sv);
79072805
LW		 870 return s;
871}
872
873/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 874static int
79072805
LW		 875intuit_more(s)
876register char *s;
877{
878 if (lex_brackets)
879 return TRUE;
880 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
881 return TRUE;
882 if (*s != '{' && *s != '[')
883 return FALSE;
884 if (!lex_inpat)
885 return TRUE;
886
887 /* In a pattern, so maybe we have {n,m}. */
888 if (*s == '{') {
889 s++;
890 if (!isDIGIT(*s))
891 return TRUE;
892 while (isDIGIT(*s))
893 s++;
894 if (*s == ',')
895 s++;
896 while (isDIGIT(*s))
897 s++;
898 if (*s == '}')
899 return FALSE;
900 return TRUE;
901
902 }
903
904 /* On the other hand, maybe we have a character class */
905
906 s++;
907 if (*s == ']' || *s == '^')
908 return FALSE;
909 else {
910 int weight = 2; /* let's weigh the evidence */
911 char seen[256];
912 unsigned char un_char = 0, last_un_char;
93a17b20 913 char *send = strchr(s,']');
79072805
LW		 914 char tmpbuf[512];
915
916 if (!send) /* has to be an expression */
917 return TRUE;
918
919 Zero(seen,256,char);
920 if (*s == '$')
921 weight -= 3;
922 else if (isDIGIT(*s)) {
923 if (s[1] != ']') {
924 if (isDIGIT(s[1]) && s[2] == ']')
925 weight -= 10;
926 }
927 else
928 weight -= 100;
929 }
930 for (; s < send; s++) {
931 last_un_char = un_char;
932 un_char = (unsigned char)*s;
933 switch (*s) {
934 case '@':
935 case '&':
936 case '$':
937 weight -= seen[un_char] * 10;
938 if (isALNUM(s[1])) {
939 scan_ident(s,send,tmpbuf,FALSE);
a0d0e21e 940 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 941 weight -= 100;
942 else
943 weight -= 10;
944 }
945 else if (*s == '$' && s[1] &&
93a17b20
LW		 946 strchr("[#!%*<>()-=",s[1])) {
947 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 948 weight -= 10;
949 else
950 weight -= 1;
951 }
952 break;
953 case '\\':
954 un_char = 254;
955 if (s[1]) {
93a17b20 956 if (strchr("wds]",s[1]))
79072805
LW		 957 weight += 100;
958 else if (seen['\''] || seen['"'])
959 weight += 1;
93a17b20 960 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 961 weight += 40;
962 else if (isDIGIT(s[1])) {
963 weight += 40;
964 while (s[1] && isDIGIT(s[1]))
965 s++;
966 }
967 }
968 else
969 weight += 100;
970 break;
971 case '-':
972 if (s[1] == '\\')
973 weight += 50;
93a17b20 974 if (strchr("aA01! ",last_un_char))
79072805 975 weight += 30;
93a17b20 976 if (strchr("zZ79~",s[1]))
79072805
LW		 977 weight += 30;
978 break;
979 default:
93a17b20 980 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 981 isALPHA(*s) && s[1] && isALPHA(s[1])) {
982 char *d = tmpbuf;
983 while (isALPHA(*s))
984 *d++ = *s++;
985 *d = '\0';
986 if (keyword(tmpbuf, d - tmpbuf))
987 weight -= 150;
988 }
989 if (un_char == last_un_char + 1)
990 weight += 5;
991 weight -= seen[un_char];
992 break;
993 }
994 seen[un_char]++;
995 }
996 if (weight >= 0) /* probably a character class */
997 return FALSE;
998 }
999
1000 return TRUE;
1001}
ffed7fef 1002
a0d0e21e
LW		 1003static int
1004intuit_method(start,gv)
1005char *start;
1006GV *gv;
1007{
1008 char *s = start + (*start == '$');
1009 char tmpbuf[1024];
1010 STRLEN len;
1011 GV* indirgv;
1012
1013 if (gv) {
1014 if (GvIO(gv))
1015 return 0;
8ebc5c01 1016 if (!GvCVu(gv))
a0d0e21e
LW		 1017 gv = 0;
1018 }
1019 s = scan_word(s, tmpbuf, TRUE, &len);
1020 if (*start == '$') {
1021 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1022 return 0;
1023 s = skipspace(s);
1024 bufptr = start;
1025 expect = XREF;
1026 return *s == '(' ? FUNCMETH : METHOD;
1027 }
1028 if (!keyword(tmpbuf, len)) {
1029 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
8ebc5c01 1030 if (indirgv && GvCVu(indirgv))
a0d0e21e
LW		 1031 return 0;
1032 /* filehandle or package name makes it a method */
89bfa8cd 1033 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1034 s = skipspace(s);
55497cff 1035 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1036 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1037 nextval[nexttoke].opval =
1038 (OP*)newSVOP(OP_CONST, 0,
1039 newSVpv(tmpbuf,0));
1040 nextval[nexttoke].opval->op_private =
1041 OPpCONST_BARE;
1042 expect = XTERM;
1043 force_next(WORD);
1044 bufptr = s;
1045 return *s == '(' ? FUNCMETH : METHOD;
1046 }
1047 }
1048 return 0;
1049}
1050
1051static char*
1052incl_perldb()
1053{
1054 if (perldb) {
1055 char *pdb = getenv("PERL5DB");
1056
1057 if (pdb)
1058 return pdb;
1059 return "BEGIN { require 'perl5db.pl' }";
1060 }
1061 return "";
1062}
1063
1064
16d20bd9
AD		 1065/* Encoded script support. filter_add() effectively inserts a
1066 * 'pre-processing' function into the current source input stream.
1067 * Note that the filter function only applies to the current source file
1068 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1069 *
1070 * The datasv parameter (which may be NULL) can be used to pass
1071 * private data to this instance of the filter. The filter function
1072 * can recover the SV using the FILTER_DATA macro and use it to
1073 * store private buffers and state information.
1074 *
1075 * The supplied datasv parameter is upgraded to a PVIO type
1076 * and the IoDIRP field is used to store the function pointer.
1077 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1078 * private use must be set using malloc'd pointers.
1079 */
1080static int filter_debug = 0;
1081
1082SV *
1083filter_add(funcp, datasv)
1084 filter_t funcp;
1085 SV *datasv;
1086{
1087 if (!funcp){ /* temporary handy debugging hack to be deleted */
1088 filter_debug = atoi((char*)datasv);
1089 return NULL;
1090 }
1091 if (!rsfp_filters)
1092 rsfp_filters = newAV();
1093 if (!datasv)
1094 datasv = newSV(0);
1095 if (!SvUPGRADE(datasv, SVt_PVIO))
1096 die("Can't upgrade filter_add data to SVt_PVIO");
1097 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1098 if (filter_debug)
1099 warn("filter_add func %lx (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1100 av_unshift(rsfp_filters, 1);
1101 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1102 return(datasv);
1103}
1104
1105
1106/* Delete most recently added instance of this filter function. */
a0d0e21e 1107void
16d20bd9
AD		 1108filter_del(funcp)
1109 filter_t funcp;
1110{
1111 if (filter_debug)
1112 warn("filter_del func %lx", funcp);
1113 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1114 return;
1115 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1116 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1117 /* sv_free(av_pop(rsfp_filters)); */
1118 sv_free(av_shift(rsfp_filters));
1119
16d20bd9
AD		 1120 return;
1121 }
1122 /* we need to search for the correct entry and clear it */
1123 die("filter_del can only delete in reverse order (currently)");
1124}
1125
1126
1127/* Invoke the n'th filter function for the current rsfp. */
1128I32
1129filter_read(idx, buf_sv, maxlen)
1130 int idx;
1131 SV *buf_sv;
1132 int maxlen; /* 0 = read one text line */
a0d0e21e 1133{
16d20bd9
AD		 1134 filter_t funcp;
1135 SV *datasv = NULL;
e50aee73 1136
16d20bd9
AD		 1137 if (!rsfp_filters)
1138 return -1;
1139 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1140 /* Provide a default input filter to make life easy. */
1141 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1142 if (filter_debug)
1143 warn("filter_read %d: from rsfp\n", idx);
1144 if (maxlen) {
1145 /* Want a block */
1146 int len ;
1147 int old_len = SvCUR(buf_sv) ;
1148
1149 /* ensure buf_sv is large enough */
1150 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1151 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1152 if (PerlIO_error(rsfp))
37120919
AD		 1153 return -1; /* error */
1154 else
1155 return 0 ; /* end of file */
1156 }
16d20bd9
AD		 1157 SvCUR_set(buf_sv, old_len + len) ;
1158 } else {
1159 /* Want a line */
37120919 1160 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1161 if (PerlIO_error(rsfp))
37120919
AD		 1162 return -1; /* error */
1163 else
1164 return 0 ; /* end of file */
1165 }
16d20bd9
AD		 1166 }
1167 return SvCUR(buf_sv);
1168 }
1169 /* Skip this filter slot if filter has been deleted */
1170 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1171 if (filter_debug)
1172 warn("filter_read %d: skipped (filter deleted)\n", idx);
1173 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1174 }
1175 /* Get function pointer hidden within datasv */
1176 funcp = (filter_t)IoDIRP(datasv);
1177 if (filter_debug)
1178 warn("filter_read %d: via function %lx (%s)\n",
1179 idx, funcp, SvPV(datasv,na));
1180 /* Call function. The function is expected to */
1181 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1182 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1183 return (*funcp)(idx, buf_sv, maxlen);
1184}
1185
1186static char *
fd049845 1187filter_gets(sv,fp, append)
16d20bd9 1188register SV *sv;
760ac839 1189register PerlIO *fp;
fd049845 1190STRLEN append;
16d20bd9
AD		 1191{
1192 if (rsfp_filters) {
1193
55497cff 1194 if (!append)
1195 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1196 if (FILTER_READ(0, sv, 0) > 0)
1197 return ( SvPVX(sv) ) ;
1198 else
1199 return Nullch ;
1200 }
1201 else
fd049845 1202 return (sv_gets(sv, fp, append));
16d20bd9 1203
a0d0e21e
LW		 1204}
1205
1206
748a9306
LW		 1207#ifdef DEBUGGING
1208 static char* exp_name[] =
a0d0e21e 1209 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1210#endif
463ee0b2 1211
71be2cbc 1212EXT int yychar; /* last token */
463ee0b2 1213
2f3197b3 1214int
378cc40b
LW		 1215yylex()
1216{
79072805 1217 register char *s;
378cc40b 1218 register char *d;
79072805 1219 register I32 tmp;
463ee0b2 1220 STRLEN len;
a687059c 1221
bbce6d69 1222 if (pending_ident) {
1223 char pit = pending_ident;
1224 pending_ident = 0;
1225
1226 if (in_my) {
1227 if (strchr(tokenbuf,':'))
1228 croak(no_myglob,tokenbuf);
1229 yylval.opval = newOP(OP_PADANY, 0);
1230 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1231 return PRIVATEREF;
1232 }
1233
1234 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1235 if (last_lop_op == OP_SORT &&
1236 tokenbuf[0] == '$' &&
1237 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1238 && !tokenbuf[2])
1239 {
1240 for (d = in_eval ? oldoldbufptr : linestart;
1241 d < bufend && *d != '\n';
1242 d++)
1243 {
1244 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1245 croak("Can't use \"my %s\" in sort comparison",
1246 tokenbuf);
1247 }
1248 }
1249 }
1250
1251 yylval.opval = newOP(OP_PADANY, 0);
1252 yylval.opval->op_targ = tmp;
1253 return PRIVATEREF;
1254 }
1255
1256 /* Force them to make up their mind on "@foo". */
1257 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1258 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
36477c24 1259 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
bbce6d69 1260 char tmpbuf[1024];
1261 sprintf(tmpbuf, "Literal %s now requires backslash", tokenbuf);
1262 yyerror(tmpbuf);
1263 }
1264 }
1265
1266 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1267 yylval.opval->op_private = OPpCONST_ENTERED;
1268 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1269 ((tokenbuf[0] == '$') ? SVt_PV
1270 : (tokenbuf[0] == '@') ? SVt_PVAV
1271 : SVt_PVHV));
1272 return WORD;
1273 }
1274
79072805
LW		 1275 switch (lex_state) {
1276#ifdef COMMENTARY
1277 case LEX_NORMAL: /* Some compilers will produce faster */
1278 case LEX_INTERPNORMAL: /* code if we comment these out. */
1279 break;
1280#endif
1281
1282 case LEX_KNOWNEXT:
1283 nexttoke--;
1284 yylval = nextval[nexttoke];
463ee0b2 1285 if (!nexttoke) {
79072805 1286 lex_state = lex_defer;
463ee0b2 1287 expect = lex_expect;
a0d0e21e 1288 lex_defer = LEX_NORMAL;
463ee0b2 1289 }
79072805
LW		 1290 return(nexttype[nexttoke]);
1291
1292 case LEX_INTERPCASEMOD:
1293#ifdef DEBUGGING
1294 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1295 croak("panic: INTERPCASEMOD");
79072805
LW		 1296#endif
1297 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1298 char oldmod;
79072805 1299 if (lex_casemods) {
a0d0e21e
LW		 1300 oldmod = lex_casestack[--lex_casemods];
1301 lex_casestack[lex_casemods] = '\0';
1302 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1303 bufptr += 2;
1304 lex_state = LEX_INTERPCONCAT;
1305 }
79072805
LW		 1306 return ')';
1307 }
a0d0e21e
LW		 1308 if (bufptr != bufend)
1309 bufptr += 2;
1310 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1311 return yylex();
1312 }
1313 else {
1314 s = bufptr + 1;
1315 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1316 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1317 if (strchr("LU", *s) &&
1318 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1319 {
1320 lex_casestack[--lex_casemods] = '\0';
1321 return ')';
1322 }
1323 if (lex_casemods > 10) {
89bfa8cd 1324 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1325 if (newlb != lex_casestack) {
1326 SAVEFREEPV(newlb);
1327 lex_casestack = newlb;
1328 }
1329 }
1330 lex_casestack[lex_casemods++] = *s;
1331 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1332 lex_state = LEX_INTERPCONCAT;
1333 nextval[nexttoke].ival = 0;
1334 force_next('(');
1335 if (*s == 'l')
1336 nextval[nexttoke].ival = OP_LCFIRST;
1337 else if (*s == 'u')
1338 nextval[nexttoke].ival = OP_UCFIRST;
1339 else if (*s == 'L')
1340 nextval[nexttoke].ival = OP_LC;
1341 else if (*s == 'U')
1342 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1343 else if (*s == 'Q')
1344 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1345 else
463ee0b2 1346 croak("panic: yylex");
79072805
LW		 1347 bufptr = s + 1;
1348 force_next(FUNC);
1349 if (lex_starts) {
1350 s = bufptr;
463ee0b2 1351 lex_starts = 0;
79072805
LW		 1352 Aop(OP_CONCAT);
1353 }
1354 else
1355 return yylex();
1356 }
1357
55497cff 1358 case LEX_INTERPPUSH:
1359 return sublex_push();
1360
79072805
LW		 1361 case LEX_INTERPSTART:
1362 if (bufptr == bufend)
1363 return sublex_done();
1364 expect = XTERM;
1365 lex_dojoin = (*bufptr == '@');
1366 lex_state = LEX_INTERPNORMAL;
1367 if (lex_dojoin) {
1368 nextval[nexttoke].ival = 0;
1369 force_next(',');
a0d0e21e 1370 force_ident("\"", '$');
79072805
LW		 1371 nextval[nexttoke].ival = 0;
1372 force_next('$');
1373 nextval[nexttoke].ival = 0;
1374 force_next('(');
1375 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1376 force_next(FUNC);
1377 }
1378 if (lex_starts++) {
1379 s = bufptr;
1380 Aop(OP_CONCAT);
1381 }
1382 else
1383 return yylex();
1384 break;
1385
1386 case LEX_INTERPENDMAYBE:
1387 if (intuit_more(bufptr)) {
1388 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1389 break;
1390 }
1391 /* FALL THROUGH */
1392
1393 case LEX_INTERPEND:
1394 if (lex_dojoin) {
1395 lex_dojoin = FALSE;
1396 lex_state = LEX_INTERPCONCAT;
1397 return ')';
1398 }
1399 /* FALLTHROUGH */
1400 case LEX_INTERPCONCAT:
1401#ifdef DEBUGGING
1402 if (lex_brackets)
463ee0b2 1403 croak("panic: INTERPCONCAT");
79072805
LW		 1404#endif
1405 if (bufptr == bufend)
1406 return sublex_done();
1407
ed6116ce 1408 if (SvIVX(linestr) == '\'') {
79072805
LW		 1409 SV *sv = newSVsv(linestr);
1410 if (!lex_inpat)
1411 sv = q(sv);
1412 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1413 s = bufend;
1414 }
1415 else {
1416 s = scan_const(bufptr);
1417 if (*s == '\\')
1418 lex_state = LEX_INTERPCASEMOD;
1419 else
1420 lex_state = LEX_INTERPSTART;
1421 }
1422
1423 if (s != bufptr) {
1424 nextval[nexttoke] = yylval;
463ee0b2 1425 expect = XTERM;
79072805
LW		 1426 force_next(THING);
1427 if (lex_starts++)
1428 Aop(OP_CONCAT);
1429 else {
1430 bufptr = s;
1431 return yylex();
1432 }
1433 }
1434
1435 return yylex();
a0d0e21e
LW		 1436 case LEX_FORMLINE:
1437 lex_state = LEX_NORMAL;
1438 s = scan_formline(bufptr);
1439 if (!lex_formbrack)
1440 goto rightbracket;
1441 OPERATOR(';');
79072805
LW		 1442 }
1443
1444 s = bufptr;
a687059c
LW		 1445 oldoldbufptr = oldbufptr;
1446 oldbufptr = s;
79072805 1447 DEBUG_p( {
760ac839 1448 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1449 } )
463ee0b2
LW		 1450
1451 retry:
378cc40b
LW		 1452 switch (*s) {
1453 default:
a0d0e21e 1454 warn("Unrecognized character \\%03o ignored", *s++ & 255);
378cc40b 1455 goto retry;
e929a76b
LW		 1456 case 4:
1457 case 26:
1458 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1459 case 0:
463ee0b2 1460 if (!rsfp) {
55497cff 1461 last_uni = 0;
1462 last_lop = 0;
463ee0b2
LW		 1463 if (lex_brackets)
1464 yyerror("Missing right bracket");
79072805 1465 TOKEN(0);
463ee0b2 1466 }
a687059c
LW		 1467 if (s++ < bufend)
1468 goto retry; /* ignore stray nulls */
2f3197b3 1469 last_uni = 0;
79072805 1470 last_lop = 0;
a0d0e21e 1471 if (!in_eval && !preambled) {
79072805 1472 preambled = TRUE;
a0d0e21e 1473 sv_setpv(linestr,incl_perldb());
91b7def8 1474 if (SvCUR(linestr))
1475 sv_catpv(linestr,";");
1476 if (preambleav){
1477 while(AvFILL(preambleav) >= 0) {
1478 SV *tmpsv = av_shift(preambleav);
1479 sv_catsv(linestr, tmpsv);
1480 sv_catpv(linestr, ";");
1481 sv_free(tmpsv);
1482 }
1483 sv_free((SV*)preambleav);
1484 preambleav = NULL;
1485 }
79072805
LW		 1486 if (minus_n || minus_p) {
1487 sv_catpv(linestr, "LINE: while (<>) {");
1488 if (minus_l)
a0d0e21e 1489 sv_catpv(linestr,"chomp;");
2304df62
AD		 1490 if (minus_a){
1491 if (minus_F){
1492 char tmpbuf1[50];
1493 if ( splitstr[0] == '/' ||
1494 splitstr[0] == '\'' ||
1495 splitstr[0] == '"' )
1496 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1497 else
1498 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1499 sv_catpv(linestr,tmpbuf1);
1500 }
1501 else
1502 sv_catpv(linestr,"@F=split(' ');");
1503 }
79072805 1504 }
a0d0e21e 1505 sv_catpv(linestr, "\n");
fd049845 1506 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1507 bufend = SvPVX(linestr) + SvCUR(linestr);
a0d0e21e
LW		 1508 if (perldb && curstash != debstash) {
1509 SV *sv = NEWSV(85,0);
1510
1511 sv_upgrade(sv, SVt_PVMG);
1512 sv_setsv(sv,linestr);
1513 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1514 }
79072805 1515 goto retry;
a687059c 1516 }
e929a76b 1517 do {
fd049845 1518 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1519 fake_eof:
395c3793 1520 if (rsfp) {
a0d0e21e 1521 if (preprocess && !in_eval)
79072805 1522 (void)my_pclose(rsfp);
760ac839
LW		 1523 else if ((PerlIO *)rsfp == PerlIO_stdin())
1524 PerlIO_clearerr(rsfp);
395c3793 1525 else
760ac839 1526 (void)PerlIO_close(rsfp);
395c3793
LW		 1527 rsfp = Nullfp;
1528 }
a0d0e21e 1529 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1530 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1531 sv_catpv(linestr,";}");
fd049845 1532 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1533 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1534 minus_n = minus_p = 0;
1535 goto retry;
1536 }
fd049845 1537 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1538 sv_setpv(linestr,"");
1539 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1540 }
a0d0e21e
LW		 1541 if (doextract) {
1542 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1543 doextract = FALSE;
1544
1545 /* Incest with pod. */
1546 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1547 sv_setpv(linestr, "");
fd049845 1548 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1549 bufend = SvPVX(linestr) + SvCUR(linestr);
1550 doextract = FALSE;
1551 }
1552 }
463ee0b2 1553 incline(s);
e929a76b 1554 } while (doextract);
fd049845 1555 oldoldbufptr = oldbufptr = bufptr = linestart = s;
8990e307 1556 if (perldb && curstash != debstash) {
79072805 1557 SV *sv = NEWSV(85,0);
a687059c 1558
93a17b20 1559 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1560 sv_setsv(sv,linestr);
1561 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1562 }
463ee0b2 1563 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1564 if (curcop->cop_line == 1) {
1565 while (s < bufend && isSPACE(*s))
1566 s++;
a0d0e21e 1567 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1568 s++;
a0d0e21e 1569 if (!in_eval && *s == '#' && s[1] == '!') {
8ebc5c01 1570 /*
b8378b72
CS		 1571 * HP-UX (at least) sets argv[0] to the script name,
1572 * which makes $^X incorrect. And Digital UNIX and Linux,
1573 * at least, set argv[0] to the basename of the Perl
1574 * interpreter. So, having found "#!", we'll set it right.
8ebc5c01 1575 */
b8378b72
CS		 1576 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1577 char *ipath;
1578 char *ibase;
1579
1580 d = s + 2;
1581 while (*d == ' ' || *d == '\t')
1582 d++;
1583 ipath = d;
1584 ibase = Nullch;
1585 while (*d && !isSPACE(*d)) {
1586 if (*d++ == '/')
1587 ibase = d;
8ebc5c01 1588 }
b8378b72
CS		 1589 assert(SvPOK(x) || SvGMAGICAL(x));
1590 if (sv_eq(x, GvSV(curcop->cop_filegv))
1591 || (ibase
1592 && SvCUR(x) == (d - ibase)
1593 && strnEQ(SvPVX(x), ibase, d - ibase)))
1594 sv_setpvn(x, ipath, d - ipath);
1595 /*
1596 * $^X is always tainted, but taintedness must be off
1597 * when parsing code, so forget we ever saw it.
1598 */
1599 TAINT_NOT;
1600
1601 /*
1602 * Look for options.
1603 */
748a9306
LW		 1604 d = instr(s,"perl -");
1605 if (!d)
1606 d = instr(s,"perl");
1607 if (!d &&
1608 !minus_c &&
1609 !instr(s,"indir") &&
1610 instr(origargv[0],"perl"))
1611 {
9f68db38
LW		 1612 char **newargv;
1613 char *cmd;
1614
1615 s += 2;
1616 if (*s == ' ')
1617 s++;
1618 cmd = s;
de3bb511 1619 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1620 s++;
1621 *s++ = '\0';
de3bb511 1622 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1623 s++;
1624 if (s < bufend) {
1625 Newz(899,newargv,origargc+3,char*);
1626 newargv[1] = s;
de3bb511 1627 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1628 s++;
1629 *s = '\0';
1630 Copy(origargv+1, newargv+2, origargc+1, char*);
1631 }
1632 else
1633 newargv = origargv;
1634 newargv[0] = cmd;
1635 execv(cmd,newargv);
463ee0b2 1636 croak("Can't exec %s", cmd);
9f68db38 1637 }
748a9306 1638 if (d) {
a0d0e21e
LW		 1639 int oldpdb = perldb;
1640 int oldn = minus_n;
1641 int oldp = minus_p;
748a9306
LW		 1642
1643 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1644 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1645
1646 if (*d++ == '-') {
1647 while (d = moreswitches(d)) ;
1648 if (perldb && !oldpdb ||
b084f20b 1649 ( minus_n || minus_p ) && !(oldn || oldp) )
1650 /* if we have already added "LINE: while (<>) {",
1651 we must not do it again */
748a9306
LW		 1652 {
1653 sv_setpv(linestr, "");
fd049845 1654 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1655 bufend = SvPVX(linestr) + SvCUR(linestr);
1656 preambled = FALSE;
1657 if (perldb)
1658 (void)gv_fetchfile(origfilename);
1659 goto retry;
1660 }
a0d0e21e 1661 }
79072805 1662 }
9f68db38 1663 }
79072805 1664 }
85e6fe83 1665 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1666 bufptr = s;
1667 lex_state = LEX_FORMLINE;
1668 return yylex();
ae986130 1669 }
378cc40b 1670 goto retry;
fe14fcc3 1671 case ' ': case '\t': case '\f': case '\r': case 013:
378cc40b
LW		 1672 s++;
1673 goto retry;
378cc40b 1674 case '#':
e929a76b 1675 case '\n':
79072805 1676 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1677 d = bufend;
1678 while (s < d && *s != '\n')
378cc40b 1679 s++;
0f85fab0 1680 if (s < d)
378cc40b 1681 s++;
463ee0b2 1682 incline(s);
85e6fe83 1683 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1684 bufptr = s;
1685 lex_state = LEX_FORMLINE;
1686 return yylex();
a687059c 1687 }
378cc40b 1688 }
a687059c 1689 else {
378cc40b 1690 *s = '\0';
a687059c
LW		 1691 bufend = s;
1692 }
378cc40b
LW		 1693 goto retry;
1694 case '-':
79072805 1695 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1696 s++;
748a9306
LW		 1697 bufptr = s;
1698 tmp = *s++;
1699
1700 while (s < bufend && (*s == ' ' || *s == '\t'))
1701 s++;
1702
1703 if (strnEQ(s,"=>",2)) {
1704 if (dowarn)
1705 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1706 tmp, tmp);
1707 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1708 OPERATOR('-'); /* unary minus */
1709 }
e334a159 1710 last_uni = oldbufptr;
a0d0e21e 1711 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1712 switch (tmp) {
79072805
LW		 1713 case 'r': FTST(OP_FTEREAD);
1714 case 'w': FTST(OP_FTEWRITE);
1715 case 'x': FTST(OP_FTEEXEC);
1716 case 'o': FTST(OP_FTEOWNED);
1717 case 'R': FTST(OP_FTRREAD);
1718 case 'W': FTST(OP_FTRWRITE);
1719 case 'X': FTST(OP_FTREXEC);
1720 case 'O': FTST(OP_FTROWNED);
1721 case 'e': FTST(OP_FTIS);
1722 case 'z': FTST(OP_FTZERO);
1723 case 's': FTST(OP_FTSIZE);
1724 case 'f': FTST(OP_FTFILE);
1725 case 'd': FTST(OP_FTDIR);
1726 case 'l': FTST(OP_FTLINK);
1727 case 'p': FTST(OP_FTPIPE);
1728 case 'S': FTST(OP_FTSOCK);
1729 case 'u': FTST(OP_FTSUID);
1730 case 'g': FTST(OP_FTSGID);
1731 case 'k': FTST(OP_FTSVTX);
1732 case 'b': FTST(OP_FTBLK);
1733 case 'c': FTST(OP_FTCHR);
1734 case 't': FTST(OP_FTTTY);
1735 case 'T': FTST(OP_FTTEXT);
1736 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1737 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1738 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1739 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1740 default:
748a9306 1741 croak("Unrecognized file test: -%c", tmp);
378cc40b
LW		 1742 break;
1743 }
1744 }
a687059c
LW		 1745 tmp = *s++;
1746 if (*s == tmp) {
1747 s++;
79072805
LW		 1748 if (expect == XOPERATOR)
1749 TERM(POSTDEC);
1750 else
1751 OPERATOR(PREDEC);
1752 }
1753 else if (*s == '>') {
1754 s++;
1755 s = skipspace(s);
1756 if (isIDFIRST(*s)) {
a0d0e21e 1757 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1758 TOKEN(ARROW);
79072805 1759 }
748a9306
LW		 1760 else if (*s == '$')
1761 OPERATOR(ARROW);
463ee0b2 1762 else
748a9306 1763 TERM(ARROW);
a687059c 1764 }
79072805
LW		 1765 if (expect == XOPERATOR)
1766 Aop(OP_SUBTRACT);
1767 else {
2f3197b3
LW		 1768 if (isSPACE(*s) || !isSPACE(*bufptr))
1769 check_uni();
79072805 1770 OPERATOR('-'); /* unary minus */
2f3197b3 1771 }
79072805 1772
378cc40b 1773 case '+':
a687059c
LW		 1774 tmp = *s++;
1775 if (*s == tmp) {
378cc40b 1776 s++;
79072805
LW		 1777 if (expect == XOPERATOR)
1778 TERM(POSTINC);
1779 else
1780 OPERATOR(PREINC);
378cc40b 1781 }
79072805
LW		 1782 if (expect == XOPERATOR)
1783 Aop(OP_ADD);
1784 else {
2f3197b3
LW		 1785 if (isSPACE(*s) || !isSPACE(*bufptr))
1786 check_uni();
a687059c 1787 OPERATOR('+');
2f3197b3 1788 }
a687059c 1789
378cc40b 1790 case '*':
79072805
LW		 1791 if (expect != XOPERATOR) {
1792 s = scan_ident(s, bufend, tokenbuf, TRUE);
463ee0b2 1793 expect = XOPERATOR;
a0d0e21e
LW		 1794 force_ident(tokenbuf, '*');
1795 if (!*tokenbuf)
1796 PREREF('*');
79072805 1797 TERM('*');
a687059c 1798 }
79072805
LW		 1799 s++;
1800 if (*s == '*') {
a687059c 1801 s++;
79072805 1802 PWop(OP_POW);
a687059c 1803 }
79072805
LW		 1804 Mop(OP_MULTIPLY);
1805
378cc40b 1806 case '%':
bbce6d69 1807 if (expect == XOPERATOR) {
1808 ++s;
1809 Mop(OP_MODULO);
a687059c 1810 }
bbce6d69 1811 tokenbuf[0] = '%';
1812 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1813 if (!tokenbuf[1]) {
1814 if (s == bufend)
1815 yyerror("Final % should be \\% or %name");
1816 PREREF('%');
1817 }
1818 pending_ident = '%';
1819 TERM('%');
a687059c 1820
378cc40b 1821 case '^':
79072805 1822 s++;
a0d0e21e 1823 BOop(OP_BIT_XOR);
79072805
LW		 1824 case '[':
1825 lex_brackets++;
1826 /* FALL THROUGH */
378cc40b 1827 case '~':
378cc40b 1828 case ',':
378cc40b
LW		 1829 tmp = *s++;
1830 OPERATOR(tmp);
a0d0e21e
LW		 1831 case ':':
1832 if (s[1] == ':') {
1833 len = 0;
1834 goto just_a_word;
1835 }
1836 s++;
1837 OPERATOR(':');
8990e307
LW		 1838 case '(':
1839 s++;
a0d0e21e 1840 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1841 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1842 else
1843 expect = XTERM;
1844 TOKEN('(');
378cc40b 1845 case ';':
79072805
LW		 1846 if (curcop->cop_line < copline)
1847 copline = curcop->cop_line;
378cc40b
LW		 1848 tmp = *s++;
1849 OPERATOR(tmp);
1850 case ')':
378cc40b 1851 tmp = *s++;
16d20bd9
AD		 1852 s = skipspace(s);
1853 if (*s == '{')
1854 PREBLOCK(tmp);
378cc40b 1855 TERM(tmp);
79072805
LW		 1856 case ']':
1857 s++;
463ee0b2
LW		 1858 if (lex_brackets <= 0)
1859 yyerror("Unmatched right bracket");
1860 else
1861 --lex_brackets;
79072805 1862 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1863 if (lex_brackets == 0) {
a0d0e21e 1864 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1865 lex_state = LEX_INTERPEND;
1866 }
1867 }
4633a7c4 1868 TERM(']');
79072805
LW		 1869 case '{':
1870 leftbracket:
79072805 1871 s++;
8990e307 1872 if (lex_brackets > 100) {
89bfa8cd 1873 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1874 if (newlb != lex_brackstack) {
1875 SAVEFREEPV(newlb);
1876 lex_brackstack = newlb;
1877 }
1878 }
a0d0e21e
LW		 1879 switch (expect) {
1880 case XTERM:
1881 if (lex_formbrack) {
1882 s--;
1883 PRETERMBLOCK(DO);
1884 }
1885 if (oldoldbufptr == last_lop)
1886 lex_brackstack[lex_brackets++] = XTERM;
1887 else
1888 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1889 OPERATOR(HASHBRACK);
a0d0e21e 1890 break;
a0d0e21e 1891 case XOPERATOR:
748a9306
LW		 1892 while (s < bufend && (*s == ' ' || *s == '\t'))
1893 s++;
ff68c719 1894 if (s < bufend && isIDFIRST(*s)) {
748a9306
LW		 1895 d = scan_word(s, tokenbuf, FALSE, &len);
1896 while (d < bufend && (*d == ' ' || *d == '\t'))
1897 d++;
1898 if (*d == '}') {
1899 if (dowarn &&
1900 (keyword(tokenbuf, len) ||
1901 perl_get_cv(tokenbuf, FALSE) ))
1902 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1903 tokenbuf, tokenbuf);
1904 s = force_word(s,WORD,FALSE,TRUE,FALSE);
1905 }
1906 }
1907 /* FALL THROUGH */
1908 case XBLOCK:
a0d0e21e 1909 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 1910 expect = XSTATE;
a0d0e21e
LW		 1911 break;
1912 case XTERMBLOCK:
1913 lex_brackstack[lex_brackets++] = XOPERATOR;
1914 expect = XSTATE;
1915 break;
1916 default: {
1917 char *t;
1918 if (oldoldbufptr == last_lop)
1919 lex_brackstack[lex_brackets++] = XTERM;
1920 else
1921 lex_brackstack[lex_brackets++] = XOPERATOR;
1922 s = skipspace(s);
1923 if (*s == '}')
1924 OPERATOR(HASHBRACK);
1925 if (isALPHA(*s)) {
c07a80fd 1926 for (t = s; t < bufend && isALNUM(*t); t++) ;
a0d0e21e
LW		 1927 }
1928 else if (*s == '\'' || *s == '"') {
1929 t = strchr(s+1,*s);
1930 if (!t++)
1931 t = s;
1932 }
1933 else
1934 t = s;
1935 while (t < bufend && isSPACE(*t))
1936 t++;
1937 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1938 OPERATOR(HASHBRACK);
1939 if (expect == XREF)
1940 expect = XTERM;
1941 else {
1942 lex_brackstack[lex_brackets-1] = XSTATE;
1943 expect = XSTATE;
1944 }
8990e307 1945 }
a0d0e21e 1946 break;
463ee0b2 1947 }
79072805
LW		 1948 yylval.ival = curcop->cop_line;
1949 if (isSPACE(*s) || *s == '#')
1950 copline = NOLINE; /* invalidate current command line number */
79072805 1951 TOKEN('{');
378cc40b 1952 case '}':
79072805
LW		 1953 rightbracket:
1954 s++;
463ee0b2
LW		 1955 if (lex_brackets <= 0)
1956 yyerror("Unmatched right bracket");
1957 else
1958 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 1959 if (lex_brackets < lex_formbrack)
1960 lex_formbrack = 0;
79072805 1961 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1962 if (lex_brackets == 0) {
79072805
LW		 1963 if (lex_fakebrack) {
1964 lex_state = LEX_INTERPEND;
1965 bufptr = s;
1966 return yylex(); /* ignore fake brackets */
1967 }
a0d0e21e 1968 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1969 lex_state = LEX_INTERPEND;
1970 }
1971 }
748a9306
LW		 1972 if (lex_brackets < lex_fakebrack) {
1973 bufptr = s;
1974 lex_fakebrack = 0;
1975 return yylex(); /* ignore fake brackets */
1976 }
79072805
LW		 1977 force_next('}');
1978 TOKEN(';');
378cc40b
LW		 1979 case '&':
1980 s++;
1981 tmp = *s++;
1982 if (tmp == '&')
a0d0e21e 1983 AOPERATOR(ANDAND);
378cc40b 1984 s--;
463ee0b2 1985 if (expect == XOPERATOR) {
fd049845 1986 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 1987 curcop->cop_line--;
1988 warn(warn_nosemi);
1989 curcop->cop_line++;
1990 }
79072805 1991 BAop(OP_BIT_AND);
463ee0b2 1992 }
79072805
LW		 1993
1994 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
463ee0b2
LW		 1995 if (*tokenbuf) {
1996 expect = XOPERATOR;
a0d0e21e 1997 force_ident(tokenbuf, '&');
463ee0b2 1998 }
79072805
LW		 1999 else
2000 PREREF('&');
c07a80fd 2001 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 2002 TERM('&');
2003
378cc40b
LW		 2004 case '|':
2005 s++;
2006 tmp = *s++;
2007 if (tmp == '|')
a0d0e21e 2008 AOPERATOR(OROR);
378cc40b 2009 s--;
79072805 2010 BOop(OP_BIT_OR);
378cc40b
LW		 2011 case '=':
2012 s++;
2013 tmp = *s++;
2014 if (tmp == '=')
79072805
LW		 2015 Eop(OP_EQ);
2016 if (tmp == '>')
2017 OPERATOR(',');
378cc40b 2018 if (tmp == '~')
79072805 2019 PMop(OP_MATCH);
463ee0b2
LW		 2020 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
2021 warn("Reversed %c= operator",tmp);
378cc40b 2022 s--;
748a9306 2023 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 2024 (s == linestart+1 || s[-2] == '\n') )
748a9306 2025 {
a5f75d66
AD		 2026 if (in_eval && !rsfp) {
2027 d = bufend;
2028 while (s < d) {
2029 if (*s++ == '\n') {
2030 incline(s);
2031 if (strnEQ(s,"=cut",4)) {
2032 s = strchr(s,'\n');
2033 if (s)
2034 s++;
2035 else
2036 s = d;
2037 incline(s);
2038 goto retry;
2039 }
2040 }
2041 }
2042 goto retry;
2043 }
a0d0e21e
LW		 2044 s = bufend;
2045 doextract = TRUE;
2046 goto retry;
2047 }
2048 if (lex_brackets < lex_formbrack) {
2049 char *t;
2050 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2051 if (*t == '\n' || *t == '#') {
2052 s--;
2053 expect = XBLOCK;
2054 goto leftbracket;
2055 }
79072805 2056 }
a0d0e21e
LW		 2057 yylval.ival = 0;
2058 OPERATOR(ASSIGNOP);
378cc40b
LW		 2059 case '!':
2060 s++;
2061 tmp = *s++;
2062 if (tmp == '=')
79072805 2063 Eop(OP_NE);
378cc40b 2064 if (tmp == '~')
79072805 2065 PMop(OP_NOT);
378cc40b
LW		 2066 s--;
2067 OPERATOR('!');
2068 case '<':
79072805 2069 if (expect != XOPERATOR) {
93a17b20 2070 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2071 check_uni();
79072805
LW		 2072 if (s[1] == '<')
2073 s = scan_heredoc(s);
2074 else
2075 s = scan_inputsymbol(s);
2076 TERM(sublex_start());
378cc40b
LW		 2077 }
2078 s++;
2079 tmp = *s++;
2080 if (tmp == '<')
79072805 2081 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2082 if (tmp == '=') {
2083 tmp = *s++;
2084 if (tmp == '>')
79072805 2085 Eop(OP_NCMP);
395c3793 2086 s--;
79072805 2087 Rop(OP_LE);
395c3793 2088 }
378cc40b 2089 s--;
79072805 2090 Rop(OP_LT);
378cc40b
LW		 2091 case '>':
2092 s++;
2093 tmp = *s++;
2094 if (tmp == '>')
79072805 2095 SHop(OP_RIGHT_SHIFT);
378cc40b 2096 if (tmp == '=')
79072805 2097 Rop(OP_GE);
378cc40b 2098 s--;
79072805 2099 Rop(OP_GT);
378cc40b
LW		 2100
2101 case '$':
bbce6d69 2102 CLINE;
2103
2104 if (expect == XOPERATOR) {
2105 if (lex_formbrack && lex_brackets == lex_formbrack) {
2106 expect = XTERM;
2107 depcom();
2108 return ','; /* grandfather non-comma-format format */
8990e307 2109 }
bbce6d69 2110 }
2111
2112 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2113 if (expect == XOPERATOR)
2114 no_op("Array length", bufptr);
2115 tokenbuf[0] = '@';
2116 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2117 if (!tokenbuf[1])
a0d0e21e 2118 PREREF(DOLSHARP);
463ee0b2 2119 expect = XOPERATOR;
bbce6d69 2120 pending_ident = '#';
463ee0b2 2121 TOKEN(DOLSHARP);
79072805 2122 }
bbce6d69 2123
2124 if (expect == XOPERATOR)
2125 no_op("Scalar", bufptr);
2126 tokenbuf[0] = '$';
93a17b20 2127 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
bbce6d69 2128 if (!tokenbuf[1]) {
2129 if (s == bufend)
2130 yyerror("Final $ should be \\$ or $name");
2131 PREREF('$');
8990e307 2132 }
a0d0e21e 2133
bbce6d69 2134 /* This kludge not intended to be bulletproof. */
2135 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2136 yylval.opval = newSVOP(OP_CONST, 0,
2137 newSViv((IV)compiling.cop_arybase));
2138 yylval.opval->op_private = OPpCONST_ARYBASE;
2139 TERM(THING);
2140 }
2141
ff68c719 2142 d = s;
2143 if (lex_state == LEX_NORMAL)
2144 s = skipspace(s);
2145
bbce6d69 2146 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2147 char *t;
2148 if (*s == '[') {
2149 tokenbuf[0] = '@';
2150 if (dowarn) {
2151 for(t = s + 1;
2152 isSPACE(*t) || isALNUM(*t) || *t == '$';
2153 t++) ;
a0d0e21e
LW		 2154 if (*t++ == ',') {
2155 bufptr = skipspace(bufptr);
bbce6d69 2156 while (t < bufend && *t != ']')
2157 t++;
a0d0e21e 2158 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2159 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2160 }
2161 }
bbce6d69 2162 }
2163 else if (*s == '{') {
2164 tokenbuf[0] = '%';
2165 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2166 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2167 {
a0d0e21e 2168 char tmpbuf[1024];
a0d0e21e
LW		 2169 STRLEN len;
2170 for (t++; isSPACE(*t); t++) ;
748a9306
LW		 2171 if (isIDFIRST(*t)) {
2172 t = scan_word(t, tmpbuf, TRUE, &len);
2173 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2174 warn("You need to quote \"%s\"", tmpbuf);
2175 }
93a17b20
LW		 2176 }
2177 }
2f3197b3 2178 }
bbce6d69 2179
2180 expect = XOPERATOR;
ff68c719 2181 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
bbce6d69 2182 bool islop = (last_lop == oldoldbufptr);
bbce6d69 2183 if (!islop || last_lop_op == OP_GREPSTART)
2184 expect = XOPERATOR;
2185 else if (strchr("$@\"'`q", *s))
2186 expect = XTERM; /* e.g. print $fh "foo" */
2187 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2188 expect = XTERM; /* e.g. print $fh &sub */
2189 else if (isDIGIT(*s))
2190 expect = XTERM; /* e.g. print $fh 3 */
2191 else if (*s == '.' && isDIGIT(s[1]))
2192 expect = XTERM; /* e.g. print $fh .3 */
2193 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2194 expect = XTERM; /* e.g. print $fh -1 */
2195 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2196 expect = XTERM; /* print $fh <<"EOF" */
2197 }
2198 pending_ident = '$';
79072805 2199 TOKEN('$');
378cc40b
LW		 2200
2201 case '@':
8990e307 2202 if (expect == XOPERATOR)
bbce6d69 2203 no_op("Array", s);
2204 tokenbuf[0] = '@';
2205 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2206 if (!tokenbuf[1]) {
2207 if (s == bufend)
2208 yyerror("Final @ should be \\@ or @name");
2209 PREREF('@');
2210 }
ff68c719 2211 if (lex_state == LEX_NORMAL)
2212 s = skipspace(s);
bbce6d69 2213 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2214 if (*s == '{')
2215 tokenbuf[0] = '%';
a0d0e21e
LW		 2216
2217 /* Warn about @ where they meant $. */
2218 if (dowarn) {
2219 if (*s == '[' || *s == '{') {
2220 char *t = s + 1;
2221 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2222 t++;
2223 if (*t == '}' || *t == ']') {
2224 t++;
2225 bufptr = skipspace(bufptr);
2226 warn("Scalar value %.*s better written as $%.*s",
2227 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2228 }
93a17b20
LW		 2229 }
2230 }
463ee0b2 2231 }
bbce6d69 2232 pending_ident = '@';
79072805 2233 TERM('@');
378cc40b
LW		 2234
2235 case '/': /* may either be division or pattern */
2236 case '?': /* may either be conditional or pattern */
79072805 2237 if (expect != XOPERATOR) {
2f3197b3 2238 check_uni();
79072805
LW		 2239 s = scan_pat(s);
2240 TERM(sublex_start());
378cc40b
LW		 2241 }
2242 tmp = *s++;
a687059c 2243 if (tmp == '/')
79072805 2244 Mop(OP_DIVIDE);
378cc40b
LW		 2245 OPERATOR(tmp);
2246
2247 case '.':
748a9306 2248 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2249 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2250 lex_formbrack = 0;
8990e307 2251 expect = XSTATE;
79072805
LW		 2252 goto rightbracket;
2253 }
2254 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2255 tmp = *s++;
a687059c
LW		 2256 if (*s == tmp) {
2257 s++;
2f3197b3
LW		 2258 if (*s == tmp) {
2259 s++;
79072805 2260 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2261 }
2262 else
79072805 2263 yylval.ival = 0;
378cc40b 2264 OPERATOR(DOTDOT);
a687059c 2265 }
79072805 2266 if (expect != XOPERATOR)
2f3197b3 2267 check_uni();
79072805 2268 Aop(OP_CONCAT);
378cc40b
LW		 2269 }
2270 /* FALL THROUGH */
2271 case '0': case '1': case '2': case '3': case '4':
2272 case '5': case '6': case '7': case '8': case '9':
79072805 2273 s = scan_num(s);
8990e307
LW		 2274 if (expect == XOPERATOR)
2275 no_op("Number",s);
79072805
LW		 2276 TERM(THING);
2277
2278 case '\'':
8990e307 2279 s = scan_str(s);
463ee0b2 2280 if (expect == XOPERATOR) {
a0d0e21e
LW		 2281 if (lex_formbrack && lex_brackets == lex_formbrack) {
2282 expect = XTERM;
2283 depcom();
2284 return ','; /* grandfather non-comma-format format */
2285 }
463ee0b2 2286 else
8990e307 2287 no_op("String",s);
463ee0b2 2288 }
79072805 2289 if (!s)
85e6fe83 2290 missingterm((char*)0);
79072805
LW		 2291 yylval.ival = OP_CONST;
2292 TERM(sublex_start());
2293
2294 case '"':
8990e307 2295 s = scan_str(s);
463ee0b2 2296 if (expect == XOPERATOR) {
a0d0e21e
LW		 2297 if (lex_formbrack && lex_brackets == lex_formbrack) {
2298 expect = XTERM;
2299 depcom();
2300 return ','; /* grandfather non-comma-format format */
2301 }
463ee0b2 2302 else
8990e307 2303 no_op("String",s);
463ee0b2 2304 }
79072805 2305 if (!s)
85e6fe83 2306 missingterm((char*)0);
4633a7c4
LW		 2307 yylval.ival = OP_CONST;
2308 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2309 if (*d == '$' || *d == '@' || *d == '\\') {
2310 yylval.ival = OP_STRINGIFY;
2311 break;
2312 }
2313 }
79072805
LW		 2314 TERM(sublex_start());
2315
2316 case '`':
2317 s = scan_str(s);
8990e307
LW		 2318 if (expect == XOPERATOR)
2319 no_op("Backticks",s);
79072805 2320 if (!s)
85e6fe83 2321 missingterm((char*)0);
79072805
LW		 2322 yylval.ival = OP_BACKTICK;
2323 set_csh();
2324 TERM(sublex_start());
2325
2326 case '\\':
2327 s++;
748a9306
LW		 2328 if (dowarn && lex_inwhat && isDIGIT(*s))
2329 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2330 if (expect == XOPERATOR)
2331 no_op("Backslash",s);
79072805
LW		 2332 OPERATOR(REFGEN);
2333
2334 case 'x':
2335 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2336 s++;
2337 Mop(OP_REPEAT);
2f3197b3 2338 }
79072805
LW		 2339 goto keylookup;
2340
378cc40b 2341 case '_':
79072805
LW		 2342 case 'a': case 'A':
2343 case 'b': case 'B':
2344 case 'c': case 'C':
2345 case 'd': case 'D':
2346 case 'e': case 'E':
2347 case 'f': case 'F':
2348 case 'g': case 'G':
2349 case 'h': case 'H':
2350 case 'i': case 'I':
2351 case 'j': case 'J':
2352 case 'k': case 'K':
2353 case 'l': case 'L':
2354 case 'm': case 'M':
2355 case 'n': case 'N':
2356 case 'o': case 'O':
2357 case 'p': case 'P':
2358 case 'q': case 'Q':
2359 case 'r': case 'R':
2360 case 's': case 'S':
2361 case 't': case 'T':
2362 case 'u': case 'U':
2363 case 'v': case 'V':
2364 case 'w': case 'W':
2365 case 'X':
2366 case 'y': case 'Y':
2367 case 'z': case 'Z':
2368
2369 keylookup:
748a9306 2370 bufptr = s;
463ee0b2 2371 s = scan_word(s, tokenbuf, FALSE, &len);
8ebc5c01 2372
2373 /* Some keywords can be followed by any delimiter, including ':' */
2374 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2375 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2376 (tokenbuf[0] == 'q' &&
2377 strchr("qwx", tokenbuf[1]))));
2378
2379 /* x::* is just a word, unless x is "CORE" */
2380 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
4633a7c4
LW		 2381 goto just_a_word;
2382
3643fb5f
CS		 2383 d = s;
2384 while (d < bufend && isSPACE(*d))
2385 d++; /* no comments skipped here, or s### is misparsed */
2386
2387 /* Is this a label? */
8ebc5c01 2388 if (!tmp && expect == XSTATE
2389 && d < bufend && *d == ':' && *(d + 1) != ':') {
2390 s = d + 1;
2391 yylval.pval = savepv(tokenbuf);
2392 CLINE;
2393 TOKEN(LABEL);
3643fb5f
CS		 2394 }
2395
2396 /* Check for keywords */
a0d0e21e 2397 tmp = keyword(tokenbuf, len);
748a9306
LW		 2398
2399 /* Is this a word before a => operator? */
748a9306
LW		 2400 if (strnEQ(d,"=>",2)) {
2401 CLINE;
2402 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2403 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2404 tokenbuf, tokenbuf);
2405 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2406 yylval.opval->op_private = OPpCONST_BARE;
2407 TERM(WORD);
2408 }
2409
a0d0e21e
LW		 2410 if (tmp < 0) { /* second-class keyword? */
2411 GV* gv;
2412 if (expect != XOPERATOR &&
a5f75d66
AD		 2413 (*s != ':' || s[1] != ':') &&
2414 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2415 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2416 {
2417 tmp = 0;
2418 }
2419 else
2420 tmp = -tmp;
2421 }
2422
2423 reserved_word:
2424 switch (tmp) {
79072805
LW		 2425
2426 default: /* not a keyword */
93a17b20
LW		 2427 just_a_word: {
2428 GV *gv;
748a9306 2429 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2430
2431 /* Get the rest if it looks like a package qualifier */
2432
a0d0e21e 2433 if (*s == '\'' || *s == ':' && s[1] == ':') {
463ee0b2 2434 s = scan_word(s, tokenbuf + len, TRUE, &len);
a0d0e21e
LW		 2435 if (!len)
2436 croak("Bad name after %s::", tokenbuf);
2437 }
8990e307 2438
3643fb5f 2439 if (expect == XOPERATOR) {
fd049845 2440 if (bufptr == linestart) {
463ee0b2
LW		 2441 curcop->cop_line--;
2442 warn(warn_nosemi);
2443 curcop->cop_line++;
2444 }
2445 else
8990e307 2446 no_op("Bare word",s);
463ee0b2 2447 }
8990e307
LW		 2448
2449 /* Look for a subroutine with this name in current package. */
2450
85e6fe83 2451 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2452
a0d0e21e
LW		 2453 /* Presume this is going to be a bareword of some sort. */
2454
2455 CLINE;
2456 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2457 yylval.opval->op_private = OPpCONST_BARE;
2458
8990e307
LW		 2459 /* See if it's the indirect object for a list operator. */
2460
a0d0e21e
LW		 2461 if (oldoldbufptr &&
2462 oldoldbufptr < bufptr &&
2463 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2464 /* NO SKIPSPACE BEFORE HERE! */
2465 (expect == XREF ||
2466 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2467 {
748a9306
LW		 2468 bool immediate_paren = *s == '(';
2469
a0d0e21e
LW		 2470 /* (Now we can afford to cross potential line boundary.) */
2471 s = skipspace(s);
2472
2473 /* Two barewords in a row may indicate method call. */
2474
2475 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2476 return tmp;
2477
2478 /* If not a declared subroutine, it's an indirect object. */
2479 /* (But it's an indir obj regardless for sort.) */
2480
8e07c86e 2481 if ((last_lop_op == OP_SORT ||
8ebc5c01 2482 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
8e07c86e 2483 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2484 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2485 goto bareword;
93a17b20
LW		 2486 }
2487 }
8990e307
LW		 2488
2489 /* If followed by a paren, it's certainly a subroutine. */
2490
2491 expect = XOPERATOR;
2492 s = skipspace(s);
93a17b20 2493 if (*s == '(') {
79072805 2494 CLINE;
a0d0e21e 2495 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2496 expect = XOPERATOR;
93a17b20 2497 force_next(WORD);
c07a80fd 2498 yylval.ival = 0;
463ee0b2 2499 TOKEN('&');
79072805 2500 }
93a17b20 2501
a0d0e21e 2502 /* If followed by var or block, call it a method (unless sub) */
8990e307 2503
8ebc5c01 2504 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
463ee0b2 2505 last_lop = oldbufptr;
8990e307 2506 last_lop_op = OP_METHOD;
93a17b20 2507 PREBLOCK(METHOD);
463ee0b2
LW		 2508 }
2509
8990e307
LW		 2510 /* If followed by a bareword, see if it looks like indir obj. */
2511
a0d0e21e
LW		 2512 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2513 return tmp;
93a17b20 2514
8990e307
LW		 2515 /* Not a method, so call it a subroutine (if defined) */
2516
8ebc5c01 2517 if (gv && GvCVu(gv)) {
4633a7c4 2518 CV* cv = GvCV(gv);
8990e307 2519 if (*s == '(') {
a5f75d66 2520 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2521 expect = XTERM;
2522 force_next(WORD);
c07a80fd 2523 yylval.ival = 0;
8990e307
LW		 2524 TOKEN('&');
2525 }
748a9306 2526 if (lastchar == '-')
c2960299 2527 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2528 tokenbuf, tokenbuf);
8990e307 2529 last_lop = oldbufptr;
a0d0e21e 2530 last_lop_op = OP_ENTERSUB;
89bfa8cd 2531 /* Check for a constant sub */
760ac839
LW		 2532 {
2533 SV *sv = cv_const_sv(cv);
89bfa8cd 2534 if (sv) {
2535 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2536 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2537 yylval.opval->op_private = 0;
2538 TOKEN(WORD);
2539 }
2540 }
2541
a5f75d66
AD		 2542 /* Resolve to GV now. */
2543 op_free(yylval.opval);
2544 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2545 /* Is there a prototype? */
2546 if (SvPOK(cv)) {
2547 STRLEN len;
2548 char *proto = SvPV((SV*)cv, len);
2549 if (!len)
2550 TERM(FUNC0SUB);
2551 if (strEQ(proto, "$"))
2552 OPERATOR(UNIOPSUB);
2553 if (*proto == '&' && *s == '{') {
2554 sv_setpv(subname,"__ANON__");
2555 PREBLOCK(LSTOPSUB);
2556 }
2557 }
a5f75d66 2558 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2559 expect = XTERM;
2560 force_next(WORD);
2561 TOKEN(NOAMP);
2562 }
748a9306
LW		 2563
2564 if (hints & HINT_STRICT_SUBS &&
2565 lastchar != '-' &&
a0d0e21e 2566 strnNE(s,"->",2) &&
9b01e405 2567 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2568 last_lop_op != OP_ACCEPT &&
2569 last_lop_op != OP_PIPE_OP &&
2570 last_lop_op != OP_SOCKPAIR)
2571 {
2572 warn(
2573 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2574 tokenbuf);
2575 ++error_count;
2576 }
8990e307
LW		 2577
2578 /* Call it a bare word */
2579
748a9306
LW		 2580 bareword:
2581 if (dowarn) {
2582 if (lastchar != '-') {
2583 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2584 if (!*d)
2585 warn(warn_reserved, tokenbuf);
2586 }
2587 }
2588 if (lastchar && strchr("*%&", lastchar)) {
2589 warn("Operator or semicolon missing before %c%s",
2590 lastchar, tokenbuf);
c2960299 2591 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2592 lastchar, lastchar);
2593 }
93a17b20 2594 TOKEN(WORD);
79072805 2595 }
79072805
LW		 2596
2597 case KEY___LINE__:
2598 case KEY___FILE__: {
2599 if (tokenbuf[2] == 'L')
2600 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2601 else
463ee0b2 2602 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
79072805
LW		 2603 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2604 TERM(THING);
2605 }
2606
e50aee73 2607 case KEY___DATA__:
79072805
LW		 2608 case KEY___END__: {
2609 GV *gv;
79072805
LW		 2610
2611 /*SUPPRESS 560*/
a5f75d66 2612 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2613 char dname[256];
2614 char *pname = "main";
2615 if (tokenbuf[2] == 'D')
2616 pname = HvNAME(curstash ? curstash : defstash);
2617 sprintf(dname,"%s::DATA", pname);
2618 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
a5f75d66 2619 GvMULTI_on(gv);
79072805 2620 if (!GvIO(gv))
a0d0e21e
LW		 2621 GvIOp(gv) = newIO();
2622 IoIFP(GvIOp(gv)) = rsfp;
2623#if defined(HAS_FCNTL) && defined(F_SETFD)
2624 {
760ac839 2625 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2626 fcntl(fd,F_SETFD,fd >= 3);
2627 }
79072805 2628#endif
fd049845 2629 /* Mark this internal pseudo-handle as clean */
2630 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2631 if (preprocess)
a0d0e21e 2632 IoTYPE(GvIOp(gv)) = '|';
760ac839 2633 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2634 IoTYPE(GvIOp(gv)) = '-';
79072805 2635 else
a0d0e21e 2636 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2637 rsfp = Nullfp;
2638 }
2639 goto fake_eof;
e929a76b 2640 }
de3bb511 2641
8990e307 2642 case KEY_AUTOLOAD:
ed6116ce 2643 case KEY_DESTROY:
79072805
LW		 2644 case KEY_BEGIN:
2645 case KEY_END:
a0d0e21e 2646 if (expect == XSTATE) {
93a17b20
LW		 2647 s = bufptr;
2648 goto really_sub;
79072805
LW		 2649 }
2650 goto just_a_word;
2651
a0d0e21e
LW		 2652 case KEY_CORE:
2653 if (*s == ':' && s[1] == ':') {
2654 s += 2;
748a9306 2655 d = s;
a0d0e21e
LW		 2656 s = scan_word(s, tokenbuf, FALSE, &len);
2657 tmp = keyword(tokenbuf, len);
2658 if (tmp < 0)
2659 tmp = -tmp;
2660 goto reserved_word;
2661 }
2662 goto just_a_word;
2663
463ee0b2
LW		 2664 case KEY_abs:
2665 UNI(OP_ABS);
2666
79072805
LW		 2667 case KEY_alarm:
2668 UNI(OP_ALARM);
2669
2670 case KEY_accept:
a0d0e21e 2671 LOP(OP_ACCEPT,XTERM);
79072805 2672
463ee0b2
LW		 2673 case KEY_and:
2674 OPERATOR(ANDOP);
2675
79072805 2676 case KEY_atan2:
a0d0e21e 2677 LOP(OP_ATAN2,XTERM);
85e6fe83 2678
79072805 2679 case KEY_bind:
a0d0e21e 2680 LOP(OP_BIND,XTERM);
79072805
LW		 2681
2682 case KEY_binmode:
2683 UNI(OP_BINMODE);
2684
2685 case KEY_bless:
a0d0e21e 2686 LOP(OP_BLESS,XTERM);
79072805
LW		 2687
2688 case KEY_chop:
2689 UNI(OP_CHOP);
2690
2691 case KEY_continue:
2692 PREBLOCK(CONTINUE);
2693
2694 case KEY_chdir:
85e6fe83 2695 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2696 UNI(OP_CHDIR);
2697
2698 case KEY_close:
2699 UNI(OP_CLOSE);
2700
2701 case KEY_closedir:
2702 UNI(OP_CLOSEDIR);
2703
2704 case KEY_cmp:
2705 Eop(OP_SCMP);
2706
2707 case KEY_caller:
2708 UNI(OP_CALLER);
2709
2710 case KEY_crypt:
2711#ifdef FCRYPT
de3bb511
LW		 2712 if (!cryptseen++)
2713 init_des();
a687059c 2714#endif
a0d0e21e 2715 LOP(OP_CRYPT,XTERM);
79072805
LW		 2716
2717 case KEY_chmod:
748a9306
LW		 2718 if (dowarn) {
2719 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2720 if (*d != '0' && isDIGIT(*d))
2721 yywarn("chmod: mode argument is missing initial 0");
2722 }
a0d0e21e 2723 LOP(OP_CHMOD,XTERM);
79072805
LW		 2724
2725 case KEY_chown:
a0d0e21e 2726 LOP(OP_CHOWN,XTERM);
79072805
LW		 2727
2728 case KEY_connect:
a0d0e21e 2729 LOP(OP_CONNECT,XTERM);
79072805 2730
463ee0b2
LW		 2731 case KEY_chr:
2732 UNI(OP_CHR);
2733
79072805
LW		 2734 case KEY_cos:
2735 UNI(OP_COS);
2736
2737 case KEY_chroot:
2738 UNI(OP_CHROOT);
2739
2740 case KEY_do:
2741 s = skipspace(s);
2742 if (*s == '{')
a0d0e21e 2743 PRETERMBLOCK(DO);
79072805 2744 if (*s != '\'')
a0d0e21e 2745 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2746 OPERATOR(DO);
79072805
LW		 2747
2748 case KEY_die:
a0d0e21e
LW		 2749 hints |= HINT_BLOCK_SCOPE;
2750 LOP(OP_DIE,XTERM);
79072805
LW		 2751
2752 case KEY_defined:
2753 UNI(OP_DEFINED);
2754
2755 case KEY_delete:
a0d0e21e 2756 UNI(OP_DELETE);
79072805
LW		 2757
2758 case KEY_dbmopen:
a0d0e21e
LW		 2759 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2760 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2761
2762 case KEY_dbmclose:
2763 UNI(OP_DBMCLOSE);
2764
2765 case KEY_dump:
a0d0e21e 2766 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2767 LOOPX(OP_DUMP);
2768
2769 case KEY_else:
2770 PREBLOCK(ELSE);
2771
2772 case KEY_elsif:
2773 yylval.ival = curcop->cop_line;
2774 OPERATOR(ELSIF);
2775
2776 case KEY_eq:
2777 Eop(OP_SEQ);
2778
a0d0e21e
LW		 2779 case KEY_exists:
2780 UNI(OP_EXISTS);
2781
79072805
LW		 2782 case KEY_exit:
2783 UNI(OP_EXIT);
2784
2785 case KEY_eval:
79072805 2786 s = skipspace(s);
a0d0e21e 2787 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2788 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2789
2790 case KEY_eof:
2791 UNI(OP_EOF);
2792
2793 case KEY_exp:
2794 UNI(OP_EXP);
2795
2796 case KEY_each:
2797 UNI(OP_EACH);
2798
2799 case KEY_exec:
2800 set_csh();
a0d0e21e 2801 LOP(OP_EXEC,XREF);
79072805
LW		 2802
2803 case KEY_endhostent:
2804 FUN0(OP_EHOSTENT);
2805
2806 case KEY_endnetent:
2807 FUN0(OP_ENETENT);
2808
2809 case KEY_endservent:
2810 FUN0(OP_ESERVENT);
2811
2812 case KEY_endprotoent:
2813 FUN0(OP_EPROTOENT);
2814
2815 case KEY_endpwent:
2816 FUN0(OP_EPWENT);
2817
2818 case KEY_endgrent:
2819 FUN0(OP_EGRENT);
2820
2821 case KEY_for:
2822 case KEY_foreach:
2823 yylval.ival = curcop->cop_line;
55497cff 2824 s = skipspace(s);
2825 if (isIDFIRST(*s)) {
2826 char *p = s;
2827 if ((bufend - p) >= 3 &&
2828 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2829 p += 2;
2830 p = skipspace(p);
2831 if (isIDFIRST(*p))
2832 croak("Missing $ on loop variable");
2833 }
79072805
LW		 2834 OPERATOR(FOR);
2835
2836 case KEY_formline:
a0d0e21e 2837 LOP(OP_FORMLINE,XTERM);
79072805
LW		 2838
2839 case KEY_fork:
2840 FUN0(OP_FORK);
2841
2842 case KEY_fcntl:
a0d0e21e 2843 LOP(OP_FCNTL,XTERM);
79072805
LW		 2844
2845 case KEY_fileno:
2846 UNI(OP_FILENO);
2847
2848 case KEY_flock:
a0d0e21e 2849 LOP(OP_FLOCK,XTERM);
79072805
LW		 2850
2851 case KEY_gt:
2852 Rop(OP_SGT);
2853
2854 case KEY_ge:
2855 Rop(OP_SGE);
2856
2857 case KEY_grep:
a0d0e21e 2858 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 2859
2860 case KEY_goto:
a0d0e21e 2861 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2862 LOOPX(OP_GOTO);
2863
2864 case KEY_gmtime:
2865 UNI(OP_GMTIME);
2866
2867 case KEY_getc:
2868 UNI(OP_GETC);
2869
2870 case KEY_getppid:
2871 FUN0(OP_GETPPID);
2872
2873 case KEY_getpgrp:
2874 UNI(OP_GETPGRP);
2875
2876 case KEY_getpriority:
a0d0e21e 2877 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 2878
2879 case KEY_getprotobyname:
2880 UNI(OP_GPBYNAME);
2881
2882 case KEY_getprotobynumber:
a0d0e21e 2883 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 2884
2885 case KEY_getprotoent:
2886 FUN0(OP_GPROTOENT);
2887
2888 case KEY_getpwent:
2889 FUN0(OP_GPWENT);
2890
2891 case KEY_getpwnam:
ff68c719 2892 UNI(OP_GPWNAM);
79072805
LW		 2893
2894 case KEY_getpwuid:
ff68c719 2895 UNI(OP_GPWUID);
79072805
LW		 2896
2897 case KEY_getpeername:
2898 UNI(OP_GETPEERNAME);
2899
2900 case KEY_gethostbyname:
2901 UNI(OP_GHBYNAME);
2902
2903 case KEY_gethostbyaddr:
a0d0e21e 2904 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 2905
2906 case KEY_gethostent:
2907 FUN0(OP_GHOSTENT);
2908
2909 case KEY_getnetbyname:
2910 UNI(OP_GNBYNAME);
2911
2912 case KEY_getnetbyaddr:
a0d0e21e 2913 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 2914
2915 case KEY_getnetent:
2916 FUN0(OP_GNETENT);
2917
2918 case KEY_getservbyname:
a0d0e21e 2919 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 2920
2921 case KEY_getservbyport:
a0d0e21e 2922 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 2923
2924 case KEY_getservent:
2925 FUN0(OP_GSERVENT);
2926
2927 case KEY_getsockname:
2928 UNI(OP_GETSOCKNAME);
2929
2930 case KEY_getsockopt:
a0d0e21e 2931 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 2932
2933 case KEY_getgrent:
2934 FUN0(OP_GGRENT);
2935
2936 case KEY_getgrnam:
ff68c719 2937 UNI(OP_GGRNAM);
79072805
LW		 2938
2939 case KEY_getgrgid:
ff68c719 2940 UNI(OP_GGRGID);
79072805
LW		 2941
2942 case KEY_getlogin:
2943 FUN0(OP_GETLOGIN);
2944
93a17b20 2945 case KEY_glob:
a0d0e21e
LW		 2946 set_csh();
2947 LOP(OP_GLOB,XTERM);
93a17b20 2948
79072805
LW		 2949 case KEY_hex:
2950 UNI(OP_HEX);
2951
2952 case KEY_if:
2953 yylval.ival = curcop->cop_line;
71be2cbc 2954 OPERATOR(IF);
79072805
LW		 2955
2956 case KEY_index:
a0d0e21e 2957 LOP(OP_INDEX,XTERM);
79072805
LW		 2958
2959 case KEY_int:
2960 UNI(OP_INT);
2961
2962 case KEY_ioctl:
a0d0e21e 2963 LOP(OP_IOCTL,XTERM);
79072805
LW		 2964
2965 case KEY_join:
a0d0e21e 2966 LOP(OP_JOIN,XTERM);
79072805
LW		 2967
2968 case KEY_keys:
2969 UNI(OP_KEYS);
2970
2971 case KEY_kill:
a0d0e21e 2972 LOP(OP_KILL,XTERM);
79072805
LW		 2973
2974 case KEY_last:
a0d0e21e 2975 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 2976 LOOPX(OP_LAST);
a0d0e21e 2977
79072805
LW		 2978 case KEY_lc:
2979 UNI(OP_LC);
2980
2981 case KEY_lcfirst:
2982 UNI(OP_LCFIRST);
2983
2984 case KEY_local:
2985 OPERATOR(LOCAL);
2986
2987 case KEY_length:
2988 UNI(OP_LENGTH);
2989
2990 case KEY_lt:
2991 Rop(OP_SLT);
2992
2993 case KEY_le:
2994 Rop(OP_SLE);
2995
2996 case KEY_localtime:
2997 UNI(OP_LOCALTIME);
2998
2999 case KEY_log:
3000 UNI(OP_LOG);
3001
3002 case KEY_link:
a0d0e21e 3003 LOP(OP_LINK,XTERM);
79072805
LW		 3004
3005 case KEY_listen:
a0d0e21e 3006 LOP(OP_LISTEN,XTERM);
79072805
LW		 3007
3008 case KEY_lstat:
3009 UNI(OP_LSTAT);
3010
3011 case KEY_m:
3012 s = scan_pat(s);
3013 TERM(sublex_start());
3014
a0d0e21e
LW		 3015 case KEY_map:
3016 LOP(OP_MAPSTART,XREF);
3017
79072805 3018 case KEY_mkdir:
a0d0e21e 3019 LOP(OP_MKDIR,XTERM);
79072805
LW		 3020
3021 case KEY_msgctl:
a0d0e21e 3022 LOP(OP_MSGCTL,XTERM);
79072805
LW		 3023
3024 case KEY_msgget:
a0d0e21e 3025 LOP(OP_MSGGET,XTERM);
79072805
LW		 3026
3027 case KEY_msgrcv:
a0d0e21e 3028 LOP(OP_MSGRCV,XTERM);
79072805
LW		 3029
3030 case KEY_msgsnd:
a0d0e21e 3031 LOP(OP_MSGSND,XTERM);
79072805 3032
93a17b20
LW		 3033 case KEY_my:
3034 in_my = TRUE;
55497cff 3035 OPERATOR(MY);
93a17b20 3036
79072805 3037 case KEY_next:
a0d0e21e 3038 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3039 LOOPX(OP_NEXT);
3040
3041 case KEY_ne:
3042 Eop(OP_SNE);
3043
a0d0e21e
LW		 3044 case KEY_no:
3045 if (expect != XSTATE)
3046 yyerror("\"no\" not allowed in expression");
3047 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3048 s = force_version(s);
a0d0e21e
LW		 3049 yylval.ival = 0;
3050 OPERATOR(USE);
3051
3052 case KEY_not:
3053 OPERATOR(NOTOP);
3054
79072805 3055 case KEY_open:
93a17b20
LW		 3056 s = skipspace(s);
3057 if (isIDFIRST(*s)) {
3058 char *t;
3059 for (d = s; isALNUM(*d); d++) ;
3060 t = skipspace(d);
3061 if (strchr("|&*+-=!?:.", *t))
3062 warn("Precedence problem: open %.*s should be open(%.*s)",
3063 d-s,s, d-s,s);
3064 }
a0d0e21e 3065 LOP(OP_OPEN,XTERM);
79072805 3066
463ee0b2 3067 case KEY_or:
a0d0e21e 3068 yylval.ival = OP_OR;
463ee0b2
LW		 3069 OPERATOR(OROP);
3070
79072805
LW		 3071 case KEY_ord:
3072 UNI(OP_ORD);
3073
3074 case KEY_oct:
3075 UNI(OP_OCT);
3076
3077 case KEY_opendir:
a0d0e21e 3078 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3079
3080 case KEY_print:
3081 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3082 LOP(OP_PRINT,XREF);
79072805
LW		 3083
3084 case KEY_printf:
3085 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3086 LOP(OP_PRTF,XREF);
79072805 3087
c07a80fd 3088 case KEY_prototype:
3089 UNI(OP_PROTOTYPE);
3090
79072805 3091 case KEY_push:
a0d0e21e 3092 LOP(OP_PUSH,XTERM);
79072805
LW		 3093
3094 case KEY_pop:
3095 UNI(OP_POP);
3096
a0d0e21e
LW		 3097 case KEY_pos:
3098 UNI(OP_POS);
3099
79072805 3100 case KEY_pack:
a0d0e21e 3101 LOP(OP_PACK,XTERM);
79072805
LW		 3102
3103 case KEY_package:
a0d0e21e 3104 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3105 OPERATOR(PACKAGE);
3106
3107 case KEY_pipe:
a0d0e21e 3108 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3109
3110 case KEY_q:
3111 s = scan_str(s);
3112 if (!s)
85e6fe83 3113 missingterm((char*)0);
79072805
LW		 3114 yylval.ival = OP_CONST;
3115 TERM(sublex_start());
3116
a0d0e21e
LW		 3117 case KEY_quotemeta:
3118 UNI(OP_QUOTEMETA);
3119
8990e307
LW		 3120 case KEY_qw:
3121 s = scan_str(s);
3122 if (!s)
85e6fe83 3123 missingterm((char*)0);
55497cff 3124 if (dowarn && SvLEN(lex_stuff)) {
3125 d = SvPV_force(lex_stuff, len);
3126 for (; len; --len, ++d) {
3127 if (*d == ',') {
3128 warn("Possible attempt to separate words with commas");
3129 break;
3130 }
3131 if (*d == '#') {
3132 warn("Possible attempt to put comments in qw() list");
3133 break;
3134 }
3135 }
3136 }
8990e307
LW		 3137 force_next(')');
3138 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3139 lex_stuff = Nullsv;
3140 force_next(THING);
3141 force_next(',');
3142 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3143 force_next(THING);
3144 force_next('(');
a0d0e21e
LW		 3145 yylval.ival = OP_SPLIT;
3146 CLINE;
3147 expect = XTERM;
3148 bufptr = s;
3149 last_lop = oldbufptr;
3150 last_lop_op = OP_SPLIT;
3151 return FUNC;
8990e307 3152
79072805
LW		 3153 case KEY_qq:
3154 s = scan_str(s);
3155 if (!s)
85e6fe83 3156 missingterm((char*)0);
a0d0e21e 3157 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3158 if (SvIVX(lex_stuff) == '\'')
3159 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3160 TERM(sublex_start());
3161
3162 case KEY_qx:
3163 s = scan_str(s);
3164 if (!s)
85e6fe83 3165 missingterm((char*)0);
79072805
LW		 3166 yylval.ival = OP_BACKTICK;
3167 set_csh();
3168 TERM(sublex_start());
3169
3170 case KEY_return:
3171 OLDLOP(OP_RETURN);
3172
3173 case KEY_require:
748a9306 3174 *tokenbuf = '\0';
a0d0e21e 3175 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3176 if (isIDFIRST(*tokenbuf))
89bfa8cd 3177 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3178 else if (*s == '<')
a0d0e21e 3179 yyerror("<> should be quotes");
463ee0b2 3180 UNI(OP_REQUIRE);
79072805
LW		 3181
3182 case KEY_reset:
3183 UNI(OP_RESET);
3184
3185 case KEY_redo:
a0d0e21e 3186 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3187 LOOPX(OP_REDO);
3188
3189 case KEY_rename:
a0d0e21e 3190 LOP(OP_RENAME,XTERM);
79072805
LW		 3191
3192 case KEY_rand:
3193 UNI(OP_RAND);
3194
3195 case KEY_rmdir:
3196 UNI(OP_RMDIR);
3197
3198 case KEY_rindex:
a0d0e21e 3199 LOP(OP_RINDEX,XTERM);
79072805
LW		 3200
3201 case KEY_read:
a0d0e21e 3202 LOP(OP_READ,XTERM);
79072805
LW		 3203
3204 case KEY_readdir:
3205 UNI(OP_READDIR);
3206
93a17b20
LW		 3207 case KEY_readline:
3208 set_csh();
3209 UNI(OP_READLINE);
3210
3211 case KEY_readpipe:
3212 set_csh();
3213 UNI(OP_BACKTICK);
3214
79072805
LW		 3215 case KEY_rewinddir:
3216 UNI(OP_REWINDDIR);
3217
3218 case KEY_recv:
a0d0e21e 3219 LOP(OP_RECV,XTERM);
79072805
LW		 3220
3221 case KEY_reverse:
a0d0e21e 3222 LOP(OP_REVERSE,XTERM);
79072805
LW		 3223
3224 case KEY_readlink:
3225 UNI(OP_READLINK);
3226
3227 case KEY_ref:
3228 UNI(OP_REF);
3229
3230 case KEY_s:
3231 s = scan_subst(s);
3232 if (yylval.opval)
3233 TERM(sublex_start());
3234 else
3235 TOKEN(1); /* force error */
3236
a0d0e21e
LW		 3237 case KEY_chomp:
3238 UNI(OP_CHOMP);
3239
79072805
LW		 3240 case KEY_scalar:
3241 UNI(OP_SCALAR);
3242
3243 case KEY_select:
a0d0e21e 3244 LOP(OP_SELECT,XTERM);
79072805
LW		 3245
3246 case KEY_seek:
a0d0e21e 3247 LOP(OP_SEEK,XTERM);
79072805
LW		 3248
3249 case KEY_semctl:
a0d0e21e 3250 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3251
3252 case KEY_semget:
a0d0e21e 3253 LOP(OP_SEMGET,XTERM);
79072805
LW		 3254
3255 case KEY_semop:
a0d0e21e 3256 LOP(OP_SEMOP,XTERM);
79072805
LW		 3257
3258 case KEY_send:
a0d0e21e 3259 LOP(OP_SEND,XTERM);
79072805
LW		 3260
3261 case KEY_setpgrp:
a0d0e21e 3262 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3263
3264 case KEY_setpriority:
a0d0e21e 3265 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3266
3267 case KEY_sethostent:
ff68c719 3268 UNI(OP_SHOSTENT);
79072805
LW		 3269
3270 case KEY_setnetent:
ff68c719 3271 UNI(OP_SNETENT);
79072805
LW		 3272
3273 case KEY_setservent:
ff68c719 3274 UNI(OP_SSERVENT);
79072805
LW		 3275
3276 case KEY_setprotoent:
ff68c719 3277 UNI(OP_SPROTOENT);
79072805
LW		 3278
3279 case KEY_setpwent:
3280 FUN0(OP_SPWENT);
3281
3282 case KEY_setgrent:
3283 FUN0(OP_SGRENT);
3284
3285 case KEY_seekdir:
a0d0e21e 3286 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3287
3288 case KEY_setsockopt:
a0d0e21e 3289 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3290
3291 case KEY_shift:
3292 UNI(OP_SHIFT);
3293
3294 case KEY_shmctl:
a0d0e21e 3295 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3296
3297 case KEY_shmget:
a0d0e21e 3298 LOP(OP_SHMGET,XTERM);
79072805
LW		 3299
3300 case KEY_shmread:
a0d0e21e 3301 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3302
3303 case KEY_shmwrite:
a0d0e21e 3304 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3305
3306 case KEY_shutdown:
a0d0e21e 3307 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3308
3309 case KEY_sin:
3310 UNI(OP_SIN);
3311
3312 case KEY_sleep:
3313 UNI(OP_SLEEP);
3314
3315 case KEY_socket:
a0d0e21e 3316 LOP(OP_SOCKET,XTERM);
79072805
LW		 3317
3318 case KEY_socketpair:
a0d0e21e 3319 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3320
3321 case KEY_sort:
3322 checkcomma(s,tokenbuf,"subroutine name");
3323 s = skipspace(s);
3324 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3325 croak("sort is now a reserved word");
3326 expect = XTERM;
a0d0e21e
LW		 3327 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3328 LOP(OP_SORT,XREF);
79072805
LW		 3329
3330 case KEY_split:
a0d0e21e 3331 LOP(OP_SPLIT,XTERM);
79072805
LW		 3332
3333 case KEY_sprintf:
a0d0e21e 3334 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3335
3336 case KEY_splice:
a0d0e21e 3337 LOP(OP_SPLICE,XTERM);
79072805
LW		 3338
3339 case KEY_sqrt:
3340 UNI(OP_SQRT);
3341
3342 case KEY_srand:
3343 UNI(OP_SRAND);
3344
3345 case KEY_stat:
3346 UNI(OP_STAT);
3347
3348 case KEY_study:
3349 sawstudy++;
3350 UNI(OP_STUDY);
3351
3352 case KEY_substr:
a0d0e21e 3353 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3354
3355 case KEY_format:
3356 case KEY_sub:
93a17b20 3357 really_sub:
79072805 3358 s = skipspace(s);
4633a7c4 3359
463ee0b2
LW		 3360 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3361 char tmpbuf[128];
4633a7c4 3362 expect = XBLOCK;
463ee0b2
LW		 3363 d = scan_word(s, tmpbuf, TRUE, &len);
3364 if (strchr(tmpbuf, ':'))
3365 sv_setpv(subname, tmpbuf);
3366 else {
3367 sv_setsv(subname,curstname);
8990e307 3368 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3369 sv_catpvn(subname,tmpbuf,len);
3370 }
a0d0e21e 3371 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3372 s = skipspace(s);
79072805 3373 }
4633a7c4
LW		 3374 else {
3375 expect = XTERMBLOCK;
79072805 3376 sv_setpv(subname,"?");
4633a7c4
LW		 3377 }
3378
3379 if (tmp == KEY_format) {
3380 s = skipspace(s);
3381 if (*s == '=')
3382 lex_formbrack = lex_brackets + 1;
3383 OPERATOR(FORMAT);
3384 }
79072805 3385
4633a7c4
LW		 3386 /* Look for a prototype */
3387 if (*s == '(') {
3388 s = scan_str(s);
3389 if (!s) {
3390 if (lex_stuff)
3391 SvREFCNT_dec(lex_stuff);
3392 lex_stuff = Nullsv;
3393 croak("Prototype not terminated");
3394 }
3395 nexttoke++;
3396 nextval[1] = nextval[0];
3397 nexttype[1] = nexttype[0];
3398 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3399 nexttype[0] = THING;
3400 if (nexttoke == 1) {
3401 lex_defer = lex_state;
3402 lex_expect = expect;
3403 lex_state = LEX_KNOWNEXT;
3404 }
3405 lex_stuff = Nullsv;
3406 }
79072805 3407
4633a7c4
LW		 3408 if (*SvPV(subname,na) == '?') {
3409 sv_setpv(subname,"__ANON__");
3410 TOKEN(ANONSUB);
3411 }
3412 PREBLOCK(SUB);
79072805
LW		 3413
3414 case KEY_system:
3415 set_csh();
a0d0e21e 3416 LOP(OP_SYSTEM,XREF);
79072805
LW		 3417
3418 case KEY_symlink:
a0d0e21e 3419 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3420
3421 case KEY_syscall:
a0d0e21e 3422 LOP(OP_SYSCALL,XTERM);
79072805 3423
c07a80fd 3424 case KEY_sysopen:
3425 LOP(OP_SYSOPEN,XTERM);
3426
79072805 3427 case KEY_sysread:
a0d0e21e 3428 LOP(OP_SYSREAD,XTERM);
79072805
LW		 3429
3430 case KEY_syswrite:
a0d0e21e 3431 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3432
3433 case KEY_tr:
3434 s = scan_trans(s);
3435 TERM(sublex_start());
3436
3437 case KEY_tell:
3438 UNI(OP_TELL);
3439
3440 case KEY_telldir:
3441 UNI(OP_TELLDIR);
3442
463ee0b2 3443 case KEY_tie:
a0d0e21e 3444 LOP(OP_TIE,XTERM);
463ee0b2 3445
c07a80fd 3446 case KEY_tied:
3447 UNI(OP_TIED);
3448
79072805
LW		 3449 case KEY_time:
3450 FUN0(OP_TIME);
3451
3452 case KEY_times:
3453 FUN0(OP_TMS);
3454
3455 case KEY_truncate:
a0d0e21e 3456 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3457
3458 case KEY_uc:
3459 UNI(OP_UC);
3460
3461 case KEY_ucfirst:
3462 UNI(OP_UCFIRST);
3463
463ee0b2
LW		 3464 case KEY_untie:
3465 UNI(OP_UNTIE);
3466
79072805
LW		 3467 case KEY_until:
3468 yylval.ival = curcop->cop_line;
71be2cbc 3469 OPERATOR(UNTIL);
79072805
LW		 3470
3471 case KEY_unless:
3472 yylval.ival = curcop->cop_line;
71be2cbc 3473 OPERATOR(UNLESS);
79072805
LW		 3474
3475 case KEY_unlink:
a0d0e21e 3476 LOP(OP_UNLINK,XTERM);
79072805
LW		 3477
3478 case KEY_undef:
3479 UNI(OP_UNDEF);
3480
3481 case KEY_unpack:
a0d0e21e 3482 LOP(OP_UNPACK,XTERM);
79072805
LW		 3483
3484 case KEY_utime:
a0d0e21e 3485 LOP(OP_UTIME,XTERM);
79072805
LW		 3486
3487 case KEY_umask:
748a9306
LW		 3488 if (dowarn) {
3489 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3490 if (*d != '0' && isDIGIT(*d))
3491 yywarn("umask: argument is missing initial 0");
3492 }
79072805
LW		 3493 UNI(OP_UMASK);
3494
3495 case KEY_unshift:
a0d0e21e
LW		 3496 LOP(OP_UNSHIFT,XTERM);
3497
3498 case KEY_use:
3499 if (expect != XSTATE)
3500 yyerror("\"use\" not allowed in expression");
89bfa8cd 3501 s = skipspace(s);
3502 if(isDIGIT(*s)) {
3503 s = force_version(s);
3504 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3505 nextval[nexttoke].opval = Nullop;
3506 force_next(WORD);
3507 }
3508 }
3509 else {
3510 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3511 s = force_version(s);
3512 }
a0d0e21e
LW		 3513 yylval.ival = 1;
3514 OPERATOR(USE);
79072805
LW		 3515
3516 case KEY_values:
3517 UNI(OP_VALUES);
3518
3519 case KEY_vec:
3520 sawvec = TRUE;
a0d0e21e 3521 LOP(OP_VEC,XTERM);
79072805
LW		 3522
3523 case KEY_while:
3524 yylval.ival = curcop->cop_line;
71be2cbc 3525 OPERATOR(WHILE);
79072805
LW		 3526
3527 case KEY_warn:
a0d0e21e
LW		 3528 hints |= HINT_BLOCK_SCOPE;
3529 LOP(OP_WARN,XTERM);
79072805
LW		 3530
3531 case KEY_wait:
3532 FUN0(OP_WAIT);
3533
3534 case KEY_waitpid:
a0d0e21e 3535 LOP(OP_WAITPID,XTERM);
79072805
LW		 3536
3537 case KEY_wantarray:
3538 FUN0(OP_WANTARRAY);
3539
3540 case KEY_write:
85e6fe83 3541 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3542 UNI(OP_ENTERWRITE);
3543
3544 case KEY_x:
3545 if (expect == XOPERATOR)
3546 Mop(OP_REPEAT);
3547 check_uni();
3548 goto just_a_word;
3549
a0d0e21e
LW		 3550 case KEY_xor:
3551 yylval.ival = OP_XOR;
3552 OPERATOR(OROP);
3553
79072805
LW		 3554 case KEY_y:
3555 s = scan_trans(s);
3556 TERM(sublex_start());
3557 }
3558 }
3559}
3560
3561I32
3562keyword(d, len)
3563register char *d;
3564I32 len;
3565{
3566 switch (*d) {
3567 case '_':
3568 if (d[1] == '_') {
a0d0e21e
LW		 3569 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3570 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
e50aee73 3571 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3572 if (strEQ(d,"__END__")) return KEY___END__;
3573 }
3574 break;
8990e307
LW		 3575 case 'A':
3576 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3577 break;
79072805 3578 case 'a':
463ee0b2
LW		 3579 switch (len) {
3580 case 3:
a0d0e21e
LW		 3581 if (strEQ(d,"and")) return -KEY_and;
3582 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3583 break;
463ee0b2 3584 case 5:
a0d0e21e
LW		 3585 if (strEQ(d,"alarm")) return -KEY_alarm;
3586 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3587 break;
3588 case 6:
a0d0e21e 3589 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3590 break;
3591 }
79072805
LW		 3592 break;
3593 case 'B':
3594 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3595 break;
79072805 3596 case 'b':
a0d0e21e
LW		 3597 if (strEQ(d,"bless")) return -KEY_bless;
3598 if (strEQ(d,"bind")) return -KEY_bind;
3599 if (strEQ(d,"binmode")) return -KEY_binmode;
3600 break;
3601 case 'C':
3602 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3603 break;
3604 case 'c':
3605 switch (len) {
3606 case 3:
a0d0e21e
LW		 3607 if (strEQ(d,"cmp")) return -KEY_cmp;
3608 if (strEQ(d,"chr")) return -KEY_chr;
3609 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3610 break;
3611 case 4:
3612 if (strEQ(d,"chop")) return KEY_chop;
3613 break;
3614 case 5:
a0d0e21e
LW		 3615 if (strEQ(d,"close")) return -KEY_close;
3616 if (strEQ(d,"chdir")) return -KEY_chdir;
3617 if (strEQ(d,"chomp")) return KEY_chomp;
3618 if (strEQ(d,"chmod")) return -KEY_chmod;
3619 if (strEQ(d,"chown")) return -KEY_chown;
3620 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3621 break;
3622 case 6:
a0d0e21e
LW		 3623 if (strEQ(d,"chroot")) return -KEY_chroot;
3624 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3625 break;
3626 case 7:
a0d0e21e 3627 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3628 break;
3629 case 8:
a0d0e21e
LW		 3630 if (strEQ(d,"closedir")) return -KEY_closedir;
3631 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3632 break;
3633 }
3634 break;
ed6116ce
LW		 3635 case 'D':
3636 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3637 break;
79072805
LW		 3638 case 'd':
3639 switch (len) {
3640 case 2:
3641 if (strEQ(d,"do")) return KEY_do;
3642 break;
3643 case 3:
a0d0e21e 3644 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3645 break;
3646 case 4:
a0d0e21e 3647 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3648 break;
3649 case 6:
3650 if (strEQ(d,"delete")) return KEY_delete;
3651 break;
3652 case 7:
3653 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3654 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3655 break;
3656 case 8:
a0d0e21e 3657 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3658 break;
3659 }
3660 break;
3661 case 'E':
a0d0e21e 3662 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3663 if (strEQ(d,"END")) return KEY_END;
3664 break;
3665 case 'e':
3666 switch (len) {
3667 case 2:
a0d0e21e 3668 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3669 break;
3670 case 3:
a0d0e21e
LW		 3671 if (strEQ(d,"eof")) return -KEY_eof;
3672 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3673 break;
3674 case 4:
3675 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3676 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3677 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3678 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3679 if (strEQ(d,"each")) return KEY_each;
3680 break;
3681 case 5:
3682 if (strEQ(d,"elsif")) return KEY_elsif;
3683 break;
a0d0e21e
LW		 3684 case 6:
3685 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3686 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3687 break;
79072805 3688 case 8:
a0d0e21e
LW		 3689 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3690 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3691 break;
3692 case 9:
a0d0e21e 3693 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3694 break;
3695 case 10:
a0d0e21e
LW		 3696 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3697 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3698 break;
3699 case 11:
a0d0e21e 3700 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3701 break;
a687059c 3702 }
a687059c 3703 break;
79072805
LW		 3704 case 'f':
3705 switch (len) {
3706 case 3:
3707 if (strEQ(d,"for")) return KEY_for;
3708 break;
3709 case 4:
a0d0e21e 3710 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3711 break;
3712 case 5:
a0d0e21e
LW		 3713 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3714 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3715 break;
3716 case 6:
3717 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3718 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3719 break;
3720 case 7:
3721 if (strEQ(d,"foreach")) return KEY_foreach;
3722 break;
3723 case 8:
a0d0e21e 3724 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3725 break;
378cc40b 3726 }
a687059c 3727 break;
79072805
LW		 3728 case 'G':
3729 if (len == 2) {
a0d0e21e
LW		 3730 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3731 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3732 }
a687059c 3733 break;
79072805 3734 case 'g':
a687059c
LW		 3735 if (strnEQ(d,"get",3)) {
3736 d += 3;
3737 if (*d == 'p') {
79072805
LW		 3738 switch (len) {
3739 case 7:
a0d0e21e
LW		 3740 if (strEQ(d,"ppid")) return -KEY_getppid;
3741 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3742 break;
3743 case 8:
a0d0e21e
LW		 3744 if (strEQ(d,"pwent")) return -KEY_getpwent;
3745 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3746 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3747 break;
3748 case 11:
a0d0e21e
LW		 3749 if (strEQ(d,"peername")) return -KEY_getpeername;
3750 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3751 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3752 break;
3753 case 14:
a0d0e21e 3754 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3755 break;
3756 case 16:
a0d0e21e 3757 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3758 break;
3759 }
a687059c
LW		 3760 }
3761 else if (*d == 'h') {
a0d0e21e
LW		 3762 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3763 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3764 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3765 }
3766 else if (*d == 'n') {
a0d0e21e
LW		 3767 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3768 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3769 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3770 }
3771 else if (*d == 's') {
a0d0e21e
LW		 3772 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3773 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3774 if (strEQ(d,"servent")) return -KEY_getservent;
3775 if (strEQ(d,"sockname")) return -KEY_getsockname;
3776 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3777 }
3778 else if (*d == 'g') {
a0d0e21e
LW		 3779 if (strEQ(d,"grent")) return -KEY_getgrent;
3780 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3781 if (strEQ(d,"grgid")) return -KEY_getgrgid;
a687059c
LW		 3782 }
3783 else if (*d == 'l') {
a0d0e21e 3784 if (strEQ(d,"login")) return -KEY_getlogin;
a687059c 3785 }
a0d0e21e 3786 else if (strEQ(d,"c")) return -KEY_getc;
79072805 3787 break;
a687059c 3788 }
79072805
LW		 3789 switch (len) {
3790 case 2:
a0d0e21e
LW		 3791 if (strEQ(d,"gt")) return -KEY_gt;
3792 if (strEQ(d,"ge")) return -KEY_ge;
79072805
LW		 3793 break;
3794 case 4:
3795 if (strEQ(d,"grep")) return KEY_grep;
3796 if (strEQ(d,"goto")) return KEY_goto;
a0d0e21e 3797 if (strEQ(d,"glob")) return -KEY_glob;
79072805
LW		 3798 break;
3799 case 6:
a0d0e21e 3800 if (strEQ(d,"gmtime")) return -KEY_gmtime;
79072805 3801 break;
378cc40b 3802 }
a687059c 3803 break;
79072805 3804 case 'h':
a0d0e21e 3805 if (strEQ(d,"hex")) return -KEY_hex;
a687059c 3806 break;
79072805
LW		 3807 case 'i':
3808 switch (len) {
3809 case 2:
3810 if (strEQ(d,"if")) return KEY_if;
3811 break;
3812 case 3:
a0d0e21e 3813 if (strEQ(d,"int")) return -KEY_int;
79072805
LW		 3814 break;
3815 case 5:
a0d0e21e
LW		 3816 if (strEQ(d,"index")) return -KEY_index;
3817 if (strEQ(d,"ioctl")) return -KEY_ioctl;
79072805
LW		 3818 break;
3819 }
a687059c 3820 break;
79072805 3821 case 'j':
a0d0e21e 3822 if (strEQ(d,"join")) return -KEY_join;
a687059c 3823 break;
79072805
LW		 3824 case 'k':
3825 if (len == 4) {
3826 if (strEQ(d,"keys")) return KEY_keys;
a0d0e21e 3827 if (strEQ(d,"kill")) return -KEY_kill;
663a0e37 3828 }
79072805
LW		 3829 break;
3830 case 'L':
3831 if (len == 2) {
a0d0e21e
LW		 3832 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3833 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
378cc40b 3834 }
79072805
LW		 3835 break;
3836 case 'l':
3837 switch (len) {
3838 case 2:
a0d0e21e
LW		 3839 if (strEQ(d,"lt")) return -KEY_lt;
3840 if (strEQ(d,"le")) return -KEY_le;
3841 if (strEQ(d,"lc")) return -KEY_lc;
79072805
LW		 3842 break;
3843 case 3:
a0d0e21e 3844 if (strEQ(d,"log")) return -KEY_log;
79072805
LW		 3845 break;
3846 case 4:
3847 if (strEQ(d,"last")) return KEY_last;
a0d0e21e 3848 if (strEQ(d,"link")) return -KEY_link;
395c3793 3849 break;
79072805
LW		 3850 case 5:
3851 if (strEQ(d,"local")) return KEY_local;
a0d0e21e 3852 if (strEQ(d,"lstat")) return -KEY_lstat;
79072805
LW		 3853 break;
3854 case 6:
a0d0e21e
LW		 3855 if (strEQ(d,"length")) return -KEY_length;
3856 if (strEQ(d,"listen")) return -KEY_listen;
79072805
LW		 3857 break;
3858 case 7:
a0d0e21e 3859 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
79072805
LW		 3860 break;
3861 case 9:
a0d0e21e 3862 if (strEQ(d,"localtime")) return -KEY_localtime;
395c3793
LW		 3863 break;
3864 }
a687059c 3865 break;
79072805
LW		 3866 case 'm':
3867 switch (len) {
3868 case 1: return KEY_m;
93a17b20
LW		 3869 case 2:
3870 if (strEQ(d,"my")) return KEY_my;
3871 break;
a0d0e21e
LW		 3872 case 3:
3873 if (strEQ(d,"map")) return KEY_map;
3874 break;
79072805 3875 case 5:
a0d0e21e 3876 if (strEQ(d,"mkdir")) return -KEY_mkdir;
79072805
LW		 3877 break;
3878 case 6:
a0d0e21e
LW		 3879 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3880 if (strEQ(d,"msgget")) return -KEY_msgget;
3881 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3882 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
79072805
LW		 3883 break;
3884 }
a687059c 3885 break;
79072805 3886 case 'N':
a0d0e21e 3887 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
a687059c 3888 break;
79072805
LW