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[perl5.git] / toke.c
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a0d0e21e 1/* toke.c
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
378cc40b 7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "It all comes from here, the stench and the peril." --Frodo
378cc40b
LW		 12 */
13
14#include "EXTERN.h"
15#include "perl.h"
378cc40b 16
a0d0e21e
LW		 17static void check_uni _((void));
18static void force_next _((I32 type));
89bfa8cd 19static char *force_version _((char *start));
a0d0e21e
LW		 20static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21static SV *q _((SV *sv));
22static char *scan_const _((char *start));
23static char *scan_formline _((char *s));
24static char *scan_heredoc _((char *s));
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{
748a9306 160 char *oldbp = bufptr;
fd049845 161 bool is_first = (oldbufptr == linestart);
68dc0745 162 char *msg;
163
8990e307 164 bufptr = s;
68dc0745 165 New(890, msg, strlen(what) + 40, char);
166 sprintf(msg, "%s found where operator expected", what);
167 yywarn(msg);
168 Safefree(msg);
748a9306 169 if (is_first)
a0d0e21e 170 warn("\t(Missing semicolon on previous line?)\n");
748a9306
LW		 171 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
172 char *t;
173 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
174 if (t < bufptr && isSPACE(*t))
175 warn("\t(Do you need to predeclare %.*s?)\n",
176 t - oldoldbufptr, oldoldbufptr);
177
178 }
179 else
180 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
181 bufptr = oldbp;
8990e307
LW		 182}
183
184static void
185missingterm(s)
186char *s;
187{
188 char tmpbuf[3];
189 char q;
190 if (s) {
191 char *nl = strrchr(s,'\n');
192 if (nl)
193 *nl = '\0';
194 }
195 else if (multi_close < 32 || multi_close == 127) {
196 *tmpbuf = '^';
bbce6d69 197 tmpbuf[1] = toCTRL(multi_close);
8990e307
LW		 198 s = "\\n";
199 tmpbuf[2] = '\0';
200 s = tmpbuf;
201 }
202 else {
203 *tmpbuf = multi_close;
204 tmpbuf[1] = '\0';
205 s = tmpbuf;
206 }
207 q = strchr(s,'"') ? '\'' : '"';
208 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
463ee0b2 209}
79072805
LW		 210
211void
a0d0e21e
LW		 212deprecate(s)
213char *s;
214{
215 if (dowarn)
216 warn("Use of %s is deprecated", s);
217}
218
219static void
220depcom()
221{
222 deprecate("comma-less variable list");
223}
224
225void
8990e307
LW		 226lex_start(line)
227SV *line;
79072805 228{
8990e307
LW		 229 char *s;
230 STRLEN len;
231
55497cff 232 SAVEI32(lex_dojoin);
233 SAVEI32(lex_brackets);
234 SAVEI32(lex_fakebrack);
235 SAVEI32(lex_casemods);
236 SAVEI32(lex_starts);
237 SAVEI32(lex_state);
a0d0e21e 238 SAVESPTR(lex_inpat);
55497cff 239 SAVEI32(lex_inwhat);
240 SAVEI16(curcop->cop_line);
85e6fe83
LW		 241 SAVEPPTR(bufptr);
242 SAVEPPTR(bufend);
243 SAVEPPTR(oldbufptr);
244 SAVEPPTR(oldoldbufptr);
fd049845 245 SAVEPPTR(linestart);
463ee0b2 246 SAVESPTR(linestr);
85e6fe83 247 SAVEPPTR(lex_brackstack);
a0d0e21e 248 SAVEPPTR(lex_casestack);
6d5fb7e3 249 SAVEDESTRUCTOR(restore_rsfp, rsfp);
463ee0b2 250
79072805
LW		 251 lex_state = LEX_NORMAL;
252 lex_defer = 0;
8990e307 253 expect = XSTATE;
79072805
LW		 254 lex_brackets = 0;
255 lex_fakebrack = 0;
8990e307 256 New(899, lex_brackstack, 120, char);
a0d0e21e 257 New(899, lex_casestack, 12, char);
8990e307 258 SAVEFREEPV(lex_brackstack);
a0d0e21e 259 SAVEFREEPV(lex_casestack);
79072805 260 lex_casemods = 0;
a0d0e21e 261 *lex_casestack = '\0';
79072805
LW		 262 lex_dojoin = 0;
263 lex_starts = 0;
264 if (lex_stuff)
8990e307 265 SvREFCNT_dec(lex_stuff);
79072805
LW		 266 lex_stuff = Nullsv;
267 if (lex_repl)
8990e307 268 SvREFCNT_dec(lex_repl);
79072805
LW		 269 lex_repl = Nullsv;
270 lex_inpat = 0;
271 lex_inwhat = 0;
8990e307
LW		 272 linestr = line;
273 if (SvREADONLY(linestr))
274 linestr = sv_2mortal(newSVsv(linestr));
275 s = SvPV(linestr, len);
276 if (len && s[len-1] != ';') {
a0d0e21e 277 if (!(SvFLAGS(linestr) & SVs_TEMP))
8990e307
LW		 278 linestr = sv_2mortal(newSVsv(linestr));
279 sv_catpvn(linestr, "\n;", 2);
280 }
281 SvTEMP_off(linestr);
fd049845 282 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
79072805 283 bufend = bufptr + SvCUR(linestr);
c07a80fd 284 SvREFCNT_dec(rs);
285 rs = newSVpv("\n", 1);
8990e307 286 rsfp = 0;
79072805 287}
a687059c 288
463ee0b2
LW		 289void
290lex_end()
291{
6ca21dd3 292 doextract = FALSE;
463ee0b2
LW		 293}
294
295static void
6d5fb7e3
CS		 296restore_rsfp(f)
297void *f;
298{
760ac839 299 PerlIO *fp = (PerlIO*)f;
6d5fb7e3 300
760ac839
LW		 301 if (rsfp == PerlIO_stdin())
302 PerlIO_clearerr(rsfp);
a5f75d66 303 else if (rsfp && (rsfp != fp))
760ac839 304 PerlIO_close(rsfp);
6d5fb7e3
CS		 305 rsfp = fp;
306}
307
308static void
463ee0b2
LW		 309incline(s)
310char *s;
311{
312 char *t;
313 char *n;
314 char ch;
315 int sawline = 0;
316
317 curcop->cop_line++;
318 if (*s++ != '#')
319 return;
320 while (*s == ' ' || *s == '\t') s++;
321 if (strnEQ(s, "line ", 5)) {
322 s += 5;
323 sawline = 1;
324 }
325 if (!isDIGIT(*s))
326 return;
327 n = s;
328 while (isDIGIT(*s))
329 s++;
330 while (*s == ' ' || *s == '\t')
331 s++;
332 if (*s == '"' && (t = strchr(s+1, '"')))
333 s++;
334 else {
335 if (!sawline)
336 return; /* false alarm */
337 for (t = s; !isSPACE(*t); t++) ;
338 }
339 ch = *t;
340 *t = '\0';
341 if (t - s > 0)
342 curcop->cop_filegv = gv_fetchfile(s);
343 else
344 curcop->cop_filegv = gv_fetchfile(origfilename);
345 *t = ch;
346 curcop->cop_line = atoi(n)-1;
347}
348
8990e307 349static char *
a687059c
LW		 350skipspace(s)
351register char *s;
352{
85e6fe83 353 if (lex_formbrack && lex_brackets <= lex_formbrack) {
463ee0b2
LW		 354 while (s < bufend && (*s == ' ' || *s == '\t'))
355 s++;
356 return s;
357 }
358 for (;;) {
fd049845 359 STRLEN prevlen;
463ee0b2
LW		 360 while (s < bufend && isSPACE(*s))
361 s++;
362 if (s < bufend && *s == '#') {
363 while (s < bufend && *s != '\n')
364 s++;
365 if (s < bufend)
366 s++;
367 }
a0d0e21e 368 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
463ee0b2 369 return s;
fd049845 370 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
a0d0e21e
LW		 371 if (minus_n || minus_p) {
372 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
373 sv_catpv(linestr,";}");
374 minus_n = minus_p = 0;
375 }
376 else
377 sv_setpv(linestr,";");
fd049845 378 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 379 bufend = SvPVX(linestr) + SvCUR(linestr);
380 if (preprocess && !in_eval)
8990e307 381 (void)my_pclose(rsfp);
760ac839
LW		 382 else if ((PerlIO*)rsfp == PerlIO_stdin())
383 PerlIO_clearerr(rsfp);
8990e307 384 else
760ac839 385 (void)PerlIO_close(rsfp);
8990e307 386 rsfp = Nullfp;
463ee0b2
LW		 387 return s;
388 }
fd049845 389 linestart = bufptr = s + prevlen;
390 bufend = s + SvCUR(linestr);
391 s = bufptr;
a0d0e21e 392 incline(s);
8990e307
LW		 393 if (perldb && curstash != debstash) {
394 SV *sv = NEWSV(85,0);
395
396 sv_upgrade(sv, SVt_PVMG);
fd049845 397 sv_setpvn(sv,bufptr,bufend-bufptr);
8990e307
LW		 398 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
399 }
463ee0b2 400 }
a687059c 401}
378cc40b 402
8990e307 403static void
2f3197b3
LW		 404check_uni() {
405 char *s;
406 char ch;
a0d0e21e 407 char *t;
2f3197b3
LW		 408
409 if (oldoldbufptr != last_uni)
410 return;
411 while (isSPACE(*last_uni))
412 last_uni++;
e334a159 413 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
a0d0e21e
LW		 414 if ((t = strchr(s, '(')) && t < bufptr)
415 return;
2f3197b3
LW		 416 ch = *s;
417 *s = '\0';
418 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
419 *s = ch;
420}
421
ffed7fef
LW		 422#ifdef CRIPPLED_CC
423
424#undef UNI
ffed7fef 425#define UNI(f) return uni(f,s)
ffed7fef 426
8990e307 427static int
ffed7fef 428uni(f,s)
79072805 429I32 f;
ffed7fef
LW		 430char *s;
431{
432 yylval.ival = f;
79072805 433 expect = XTERM;
ffed7fef 434 bufptr = s;
2f3197b3 435 last_uni = oldbufptr;
a0d0e21e 436 last_lop_op = f;
ffed7fef
LW		 437 if (*s == '(')
438 return FUNC1;
439 s = skipspace(s);
440 if (*s == '(')
441 return FUNC1;
442 else
443 return UNIOP;
444}
445
a0d0e21e
LW		 446#endif /* CRIPPLED_CC */
447
448#define LOP(f,x) return lop(f,x,s)
449
8990e307 450static I32
f86702cc 451lop
452#ifdef CAN_PROTOTYPE
453 (I32 f, expectation x, char *s)
454#else
455 (f,x,s)
79072805 456I32 f;
a0d0e21e 457expectation x;
ffed7fef 458char *s;
f86702cc 459#endif /* CAN_PROTOTYPE */
ffed7fef 460{
79072805 461 yylval.ival = f;
35c8bce7 462 CLINE;
a0d0e21e 463 expect = x;
79072805 464 bufptr = s;
8990e307
LW		 465 last_lop = oldbufptr;
466 last_lop_op = f;
a0d0e21e
LW		 467 if (nexttoke)
468 return LSTOP;
79072805
LW		 469 if (*s == '(')
470 return FUNC;
471 s = skipspace(s);
472 if (*s == '(')
473 return FUNC;
474 else
475 return LSTOP;
476}
477
8990e307 478static void
79072805
LW		 479force_next(type)
480I32 type;
481{
482 nexttype[nexttoke] = type;
483 nexttoke++;
484 if (lex_state != LEX_KNOWNEXT) {
485 lex_defer = lex_state;
463ee0b2 486 lex_expect = expect;
79072805
LW		 487 lex_state = LEX_KNOWNEXT;
488 }
489}
490
8990e307 491static char *
a0d0e21e 492force_word(start,token,check_keyword,allow_pack,allow_tick)
463ee0b2 493register char *start;
79072805 494int token;
463ee0b2 495int check_keyword;
a0d0e21e 496int allow_pack;
463ee0b2 497int allow_tick;
79072805 498{
463ee0b2
LW		 499 register char *s;
500 STRLEN len;
501
502 start = skipspace(start);
503 s = start;
a0d0e21e
LW		 504 if (isIDFIRST(*s) ||
505 (allow_pack && *s == ':') ||
506 (allow_tick && *s == '\'') )
507 {
508 s = scan_word(s, tokenbuf, allow_pack, &len);
463ee0b2
LW		 509 if (check_keyword && keyword(tokenbuf, len))
510 return start;
511 if (token == METHOD) {
512 s = skipspace(s);
513 if (*s == '(')
514 expect = XTERM;
515 else {
516 expect = XOPERATOR;
517 force_next(')');
518 force_next('(');
519 }
79072805 520 }
463ee0b2 521 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
8990e307 522 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
79072805
LW		 523 force_next(token);
524 }
525 return s;
526}
527
8990e307 528static void
a0d0e21e 529force_ident(s, kind)
79072805 530register char *s;
a0d0e21e 531int kind;
79072805
LW		 532{
533 if (s && *s) {
748a9306
LW		 534 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
535 nextval[nexttoke].opval = op;
79072805 536 force_next(WORD);
748a9306
LW		 537 if (kind) {
538 op->op_private = OPpCONST_ENTERED;
55497cff 539 /* XXX see note in pp_entereval() for why we forgo typo
540 warnings if the symbol must be introduced in an eval.
541 GSAR 96-10-12 */
542 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
a0d0e21e
LW		 543 kind == '$' ? SVt_PV :
544 kind == '@' ? SVt_PVAV :
545 kind == '%' ? SVt_PVHV :
546 SVt_PVGV
547 );
748a9306 548 }
79072805
LW		 549 }
550}
551
89bfa8cd 552static char *
553force_version(s)
554char *s;
555{
556 OP *version = Nullop;
557
558 s = skipspace(s);
559
560 /* default VERSION number -- GBARR */
561
562 if(isDIGIT(*s)) {
563 char *d;
564 int c;
55497cff 565 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
89bfa8cd 566 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
567 s = scan_num(s);
568 /* real VERSION number -- GBARR */
569 version = yylval.opval;
570 }
571 }
572
573 /* NOTE: The parser sees the package name and the VERSION swapped */
574 nextval[nexttoke].opval = version;
575 force_next(WORD);
576
577 return (s);
578}
579
8990e307 580static SV *
79072805
LW		 581q(sv)
582SV *sv;
583{
584 register char *s;
585 register char *send;
586 register char *d;
463ee0b2 587 STRLEN len;
79072805
LW		 588
589 if (!SvLEN(sv))
590 return sv;
591
a0d0e21e 592 s = SvPV_force(sv, len);
748a9306
LW		 593 if (SvIVX(sv) == -1)
594 return sv;
463ee0b2 595 send = s + len;
79072805
LW		 596 while (s < send && *s != '\\')
597 s++;
598 if (s == send)
599 return sv;
600 d = s;
79072805
LW		 601 while (s < send) {
602 if (*s == '\\') {
a0d0e21e 603 if (s + 1 < send && (s[1] == '\\'))
79072805
LW		 604 s++; /* all that, just for this */
605 }
606 *d++ = *s++;
607 }
608 *d = '\0';
463ee0b2 609 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 610
611 return sv;
612}
613
8990e307 614static I32
79072805
LW		 615sublex_start()
616{
617 register I32 op_type = yylval.ival;
79072805
LW		 618
619 if (op_type == OP_NULL) {
620 yylval.opval = lex_op;
621 lex_op = Nullop;
622 return THING;
623 }
624 if (op_type == OP_CONST || op_type == OP_READLINE) {
625 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
626 lex_stuff = Nullsv;
627 return THING;
628 }
629
55497cff 630 sublex_info.super_state = lex_state;
631 sublex_info.sub_inwhat = op_type;
632 sublex_info.sub_op = lex_op;
633 lex_state = LEX_INTERPPUSH;
634
635 expect = XTERM;
636 if (lex_op) {
637 yylval.opval = lex_op;
638 lex_op = Nullop;
639 return PMFUNC;
640 }
641 else
642 return FUNC;
643}
644
645static I32
646sublex_push()
647{
79072805 648 push_scope();
55497cff 649
650 lex_state = sublex_info.super_state;
651 SAVEI32(lex_dojoin);
652 SAVEI32(lex_brackets);
653 SAVEI32(lex_fakebrack);
654 SAVEI32(lex_casemods);
655 SAVEI32(lex_starts);
656 SAVEI32(lex_state);
a0d0e21e 657 SAVESPTR(lex_inpat);
55497cff 658 SAVEI32(lex_inwhat);
659 SAVEI16(curcop->cop_line);
85e6fe83
LW		 660 SAVEPPTR(bufptr);
661 SAVEPPTR(oldbufptr);
662 SAVEPPTR(oldoldbufptr);
fd049845 663 SAVEPPTR(linestart);
79072805 664 SAVESPTR(linestr);
85e6fe83 665 SAVEPPTR(lex_brackstack);
a0d0e21e 666 SAVEPPTR(lex_casestack);
79072805
LW		 667
668 linestr = lex_stuff;
669 lex_stuff = Nullsv;
670
fd049845 671 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 672 bufend += SvCUR(linestr);
8990e307 673 SAVEFREESV(linestr);
79072805
LW		 674
675 lex_dojoin = FALSE;
676 lex_brackets = 0;
677 lex_fakebrack = 0;
8990e307 678 New(899, lex_brackstack, 120, char);
a0d0e21e 679 New(899, lex_casestack, 12, char);
8990e307 680 SAVEFREEPV(lex_brackstack);
a0d0e21e 681 SAVEFREEPV(lex_casestack);
79072805 682 lex_casemods = 0;
a0d0e21e 683 *lex_casestack = '\0';
79072805
LW		 684 lex_starts = 0;
685 lex_state = LEX_INTERPCONCAT;
686 curcop->cop_line = multi_start;
687
55497cff 688 lex_inwhat = sublex_info.sub_inwhat;
689 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
690 lex_inpat = sublex_info.sub_op;
79072805 691 else
55497cff 692 lex_inpat = Nullop;
79072805 693
55497cff 694 return '(';
79072805
LW		 695}
696
8990e307 697static I32
79072805
LW		 698sublex_done()
699{
700 if (!lex_starts++) {
701 expect = XOPERATOR;
93a17b20 702 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 703 return THING;
704 }
705
706 if (lex_casemods) { /* oops, we've got some unbalanced parens */
707 lex_state = LEX_INTERPCASEMOD;
708 return yylex();
709 }
710
79072805
LW		 711 /* Is there a right-hand side to take care of? */
712 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
713 linestr = lex_repl;
714 lex_inpat = 0;
fd049845 715 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 716 bufend += SvCUR(linestr);
8990e307 717 SAVEFREESV(linestr);
79072805
LW		 718 lex_dojoin = FALSE;
719 lex_brackets = 0;
720 lex_fakebrack = 0;
721 lex_casemods = 0;
a0d0e21e 722 *lex_casestack = '\0';
79072805
LW		 723 lex_starts = 0;
724 if (SvCOMPILED(lex_repl)) {
725 lex_state = LEX_INTERPNORMAL;
726 lex_starts++;
727 }
728 else
729 lex_state = LEX_INTERPCONCAT;
730 lex_repl = Nullsv;
731 return ',';
ffed7fef
LW		 732 }
733 else {
79072805 734 pop_scope();
463ee0b2 735 bufend = SvPVX(linestr);
79072805
LW		 736 bufend += SvCUR(linestr);
737 expect = XOPERATOR;
738 return ')';
ffed7fef
LW		 739 }
740}
741
8990e307 742static char *
79072805
LW		 743scan_const(start)
744char *start;
745{
746 register char *send = bufend;
747 SV *sv = NEWSV(93, send - start);
748 register char *s = start;
463ee0b2 749 register char *d = SvPVX(sv);
79072805
LW		 750 bool dorange = FALSE;
751 I32 len;
752 char *leave =
753 lex_inpat
748a9306 754 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 755 : (lex_inwhat & OP_TRANS)
756 ? ""
757 : "";
758
759 while (s < send || dorange) {
760 if (lex_inwhat == OP_TRANS) {
761 if (dorange) {
762 I32 i;
763 I32 max;
463ee0b2 764 i = d - SvPVX(sv);
79072805 765 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 766 d = SvPVX(sv) + i;
79072805 767 d -= 2;
91b7def8 768 max = (U8)d[1];
769 for (i = (U8)*d; i <= max; i++)
79072805
LW		 770 *d++ = i;
771 dorange = FALSE;
772 continue;
773 }
774 else if (*s == '-' && s+1 < send && s != start) {
775 dorange = TRUE;
776 s++;
777 }
778 }
748a9306
LW		 779 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
780 while (s < send && *s != ')')
781 *d++ = *s++;
782 }
783 else if (*s == '#' && lex_inpat &&
784 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
785 while (s+1 < send && *s != '\n')
786 *d++ = *s++;
787 }
a0d0e21e 788 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 789 break;
790 else if (*s == '$') {
791 if (!lex_inpat) /* not a regexp, so $ must be var */
792 break;
a0d0e21e 793 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 794 break; /* in regexp, $ might be tail anchor */
795 }
796 if (*s == '\\' && s+1 < send) {
797 s++;
93a17b20 798 if (*s && strchr(leave, *s)) {
79072805
LW		 799 *d++ = '\\';
800 *d++ = *s++;
801 continue;
802 }
803 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 804 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 805 {
a0d0e21e
LW		 806 if (dowarn)
807 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 808 *--s = '$';
809 break;
810 }
a0d0e21e 811 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 812 --s;
813 break;
814 }
815 switch (*s) {
816 case '-':
817 if (lex_inwhat == OP_TRANS) {
818 *d++ = *s++;
819 continue;
820 }
821 /* FALL THROUGH */
822 default:
823 *d++ = *s++;
824 continue;
825 case '0': case '1': case '2': case '3':
826 case '4': case '5': case '6': case '7':
827 *d++ = scan_oct(s, 3, &len);
828 s += len;
829 continue;
830 case 'x':
831 *d++ = scan_hex(++s, 2, &len);
832 s += len;
833 continue;
834 case 'c':
835 s++;
bbce6d69 836 len = *s++;
837 *d++ = toCTRL(len);
79072805
LW		 838 continue;
839 case 'b':
840 *d++ = '\b';
841 break;
842 case 'n':
843 *d++ = '\n';
844 break;
845 case 'r':
846 *d++ = '\r';
847 break;
848 case 'f':
849 *d++ = '\f';
850 break;
851 case 't':
852 *d++ = '\t';
853 break;
854 case 'e':
855 *d++ = '\033';
856 break;
857 case 'a':
858 *d++ = '\007';
859 break;
860 }
861 s++;
862 continue;
863 }
864 *d++ = *s++;
865 }
866 *d = '\0';
463ee0b2 867 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 868 SvPOK_on(sv);
869
870 if (SvCUR(sv) + 5 < SvLEN(sv)) {
871 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 872 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 873 }
874 if (s > bufptr)
875 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
876 else
8990e307 877 SvREFCNT_dec(sv);
79072805
LW		 878 return s;
879}
880
881/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 882static int
79072805
LW		 883intuit_more(s)
884register char *s;
885{
886 if (lex_brackets)
887 return TRUE;
888 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
889 return TRUE;
890 if (*s != '{' && *s != '[')
891 return FALSE;
892 if (!lex_inpat)
893 return TRUE;
894
895 /* In a pattern, so maybe we have {n,m}. */
896 if (*s == '{') {
897 s++;
898 if (!isDIGIT(*s))
899 return TRUE;
900 while (isDIGIT(*s))
901 s++;
902 if (*s == ',')
903 s++;
904 while (isDIGIT(*s))
905 s++;
906 if (*s == '}')
907 return FALSE;
908 return TRUE;
909
910 }
911
912 /* On the other hand, maybe we have a character class */
913
914 s++;
915 if (*s == ']' || *s == '^')
916 return FALSE;
917 else {
918 int weight = 2; /* let's weigh the evidence */
919 char seen[256];
920 unsigned char un_char = 0, last_un_char;
93a17b20 921 char *send = strchr(s,']');
79072805
LW		 922 char tmpbuf[512];
923
924 if (!send) /* has to be an expression */
925 return TRUE;
926
927 Zero(seen,256,char);
928 if (*s == '$')
929 weight -= 3;
930 else if (isDIGIT(*s)) {
931 if (s[1] != ']') {
932 if (isDIGIT(s[1]) && s[2] == ']')
933 weight -= 10;
934 }
935 else
936 weight -= 100;
937 }
938 for (; s < send; s++) {
939 last_un_char = un_char;
940 un_char = (unsigned char)*s;
941 switch (*s) {
942 case '@':
943 case '&':
944 case '$':
945 weight -= seen[un_char] * 10;
946 if (isALNUM(s[1])) {
947 scan_ident(s,send,tmpbuf,FALSE);
a0d0e21e 948 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 949 weight -= 100;
950 else
951 weight -= 10;
952 }
953 else if (*s == '$' && s[1] &&
93a17b20
LW		 954 strchr("[#!%*<>()-=",s[1])) {
955 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 956 weight -= 10;
957 else
958 weight -= 1;
959 }
960 break;
961 case '\\':
962 un_char = 254;
963 if (s[1]) {
93a17b20 964 if (strchr("wds]",s[1]))
79072805
LW		 965 weight += 100;
966 else if (seen['\''] || seen['"'])
967 weight += 1;
93a17b20 968 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 969 weight += 40;
970 else if (isDIGIT(s[1])) {
971 weight += 40;
972 while (s[1] && isDIGIT(s[1]))
973 s++;
974 }
975 }
976 else
977 weight += 100;
978 break;
979 case '-':
980 if (s[1] == '\\')
981 weight += 50;
93a17b20 982 if (strchr("aA01! ",last_un_char))
79072805 983 weight += 30;
93a17b20 984 if (strchr("zZ79~",s[1]))
79072805
LW		 985 weight += 30;
986 break;
987 default:
93a17b20 988 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 989 isALPHA(*s) && s[1] && isALPHA(s[1])) {
990 char *d = tmpbuf;
991 while (isALPHA(*s))
992 *d++ = *s++;
993 *d = '\0';
994 if (keyword(tmpbuf, d - tmpbuf))
995 weight -= 150;
996 }
997 if (un_char == last_un_char + 1)
998 weight += 5;
999 weight -= seen[un_char];
1000 break;
1001 }
1002 seen[un_char]++;
1003 }
1004 if (weight >= 0) /* probably a character class */
1005 return FALSE;
1006 }
1007
1008 return TRUE;
1009}
ffed7fef 1010
a0d0e21e
LW		 1011static int
1012intuit_method(start,gv)
1013char *start;
1014GV *gv;
1015{
1016 char *s = start + (*start == '$');
1017 char tmpbuf[1024];
1018 STRLEN len;
1019 GV* indirgv;
1020
1021 if (gv) {
1022 if (GvIO(gv))
1023 return 0;
8ebc5c01 1024 if (!GvCVu(gv))
a0d0e21e
LW		 1025 gv = 0;
1026 }
1027 s = scan_word(s, tmpbuf, TRUE, &len);
1028 if (*start == '$') {
1029 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1030 return 0;
1031 s = skipspace(s);
1032 bufptr = start;
1033 expect = XREF;
1034 return *s == '(' ? FUNCMETH : METHOD;
1035 }
1036 if (!keyword(tmpbuf, len)) {
1037 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
8ebc5c01 1038 if (indirgv && GvCVu(indirgv))
a0d0e21e
LW		 1039 return 0;
1040 /* filehandle or package name makes it a method */
89bfa8cd 1041 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1042 s = skipspace(s);
55497cff 1043 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1044 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1045 nextval[nexttoke].opval =
1046 (OP*)newSVOP(OP_CONST, 0,
1047 newSVpv(tmpbuf,0));
1048 nextval[nexttoke].opval->op_private =
1049 OPpCONST_BARE;
1050 expect = XTERM;
1051 force_next(WORD);
1052 bufptr = s;
1053 return *s == '(' ? FUNCMETH : METHOD;
1054 }
1055 }
1056 return 0;
1057}
1058
1059static char*
1060incl_perldb()
1061{
1062 if (perldb) {
1063 char *pdb = getenv("PERL5DB");
1064
1065 if (pdb)
1066 return pdb;
1067 return "BEGIN { require 'perl5db.pl' }";
1068 }
1069 return "";
1070}
1071
1072
16d20bd9
AD		 1073/* Encoded script support. filter_add() effectively inserts a
1074 * 'pre-processing' function into the current source input stream.
1075 * Note that the filter function only applies to the current source file
1076 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1077 *
1078 * The datasv parameter (which may be NULL) can be used to pass
1079 * private data to this instance of the filter. The filter function
1080 * can recover the SV using the FILTER_DATA macro and use it to
1081 * store private buffers and state information.
1082 *
1083 * The supplied datasv parameter is upgraded to a PVIO type
1084 * and the IoDIRP field is used to store the function pointer.
1085 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1086 * private use must be set using malloc'd pointers.
1087 */
1088static int filter_debug = 0;
1089
1090SV *
1091filter_add(funcp, datasv)
1092 filter_t funcp;
1093 SV *datasv;
1094{
1095 if (!funcp){ /* temporary handy debugging hack to be deleted */
1096 filter_debug = atoi((char*)datasv);
1097 return NULL;
1098 }
1099 if (!rsfp_filters)
1100 rsfp_filters = newAV();
1101 if (!datasv)
1102 datasv = newSV(0);
1103 if (!SvUPGRADE(datasv, SVt_PVIO))
1104 die("Can't upgrade filter_add data to SVt_PVIO");
1105 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1106 if (filter_debug)
ff0cee69 1107 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1108 av_unshift(rsfp_filters, 1);
1109 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1110 return(datasv);
1111}
1112
1113
1114/* Delete most recently added instance of this filter function. */
a0d0e21e 1115void
16d20bd9
AD		 1116filter_del(funcp)
1117 filter_t funcp;
1118{
1119 if (filter_debug)
ff0cee69 1120 warn("filter_del func %p", funcp);
16d20bd9
AD		 1121 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1122 return;
1123 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1124 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1125 /* sv_free(av_pop(rsfp_filters)); */
1126 sv_free(av_shift(rsfp_filters));
1127
16d20bd9
AD		 1128 return;
1129 }
1130 /* we need to search for the correct entry and clear it */
1131 die("filter_del can only delete in reverse order (currently)");
1132}
1133
1134
1135/* Invoke the n'th filter function for the current rsfp. */
1136I32
1137filter_read(idx, buf_sv, maxlen)
1138 int idx;
1139 SV *buf_sv;
1140 int maxlen; /* 0 = read one text line */
a0d0e21e 1141{
16d20bd9
AD		 1142 filter_t funcp;
1143 SV *datasv = NULL;
e50aee73 1144
16d20bd9
AD		 1145 if (!rsfp_filters)
1146 return -1;
1147 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1148 /* Provide a default input filter to make life easy. */
1149 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1150 if (filter_debug)
1151 warn("filter_read %d: from rsfp\n", idx);
1152 if (maxlen) {
1153 /* Want a block */
1154 int len ;
1155 int old_len = SvCUR(buf_sv) ;
1156
1157 /* ensure buf_sv is large enough */
1158 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1159 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1160 if (PerlIO_error(rsfp))
37120919
AD		 1161 return -1; /* error */
1162 else
1163 return 0 ; /* end of file */
1164 }
16d20bd9
AD		 1165 SvCUR_set(buf_sv, old_len + len) ;
1166 } else {
1167 /* Want a line */
37120919 1168 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1169 if (PerlIO_error(rsfp))
37120919
AD		 1170 return -1; /* error */
1171 else
1172 return 0 ; /* end of file */
1173 }
16d20bd9
AD		 1174 }
1175 return SvCUR(buf_sv);
1176 }
1177 /* Skip this filter slot if filter has been deleted */
1178 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1179 if (filter_debug)
1180 warn("filter_read %d: skipped (filter deleted)\n", idx);
1181 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1182 }
1183 /* Get function pointer hidden within datasv */
1184 funcp = (filter_t)IoDIRP(datasv);
1185 if (filter_debug)
ff0cee69 1186 warn("filter_read %d: via function %p (%s)\n",
16d20bd9
AD		 1187 idx, funcp, SvPV(datasv,na));
1188 /* Call function. The function is expected to */
1189 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1190 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1191 return (*funcp)(idx, buf_sv, maxlen);
1192}
1193
1194static char *
fd049845 1195filter_gets(sv,fp, append)
16d20bd9 1196register SV *sv;
760ac839 1197register PerlIO *fp;
fd049845 1198STRLEN append;
16d20bd9
AD		 1199{
1200 if (rsfp_filters) {
1201
55497cff 1202 if (!append)
1203 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1204 if (FILTER_READ(0, sv, 0) > 0)
1205 return ( SvPVX(sv) ) ;
1206 else
1207 return Nullch ;
1208 }
1209 else
fd049845 1210 return (sv_gets(sv, fp, append));
16d20bd9 1211
a0d0e21e
LW		 1212}
1213
1214
748a9306
LW		 1215#ifdef DEBUGGING
1216 static char* exp_name[] =
a0d0e21e 1217 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1218#endif
463ee0b2 1219
71be2cbc 1220EXT int yychar; /* last token */
463ee0b2 1221
2f3197b3 1222int
378cc40b
LW		 1223yylex()
1224{
79072805 1225 register char *s;
378cc40b 1226 register char *d;
79072805 1227 register I32 tmp;
463ee0b2 1228 STRLEN len;
a687059c 1229
bbce6d69 1230 if (pending_ident) {
1231 char pit = pending_ident;
1232 pending_ident = 0;
1233
1234 if (in_my) {
1235 if (strchr(tokenbuf,':'))
1236 croak(no_myglob,tokenbuf);
1237 yylval.opval = newOP(OP_PADANY, 0);
1238 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1239 return PRIVATEREF;
1240 }
1241
1242 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1243 if (last_lop_op == OP_SORT &&
1244 tokenbuf[0] == '$' &&
1245 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1246 && !tokenbuf[2])
1247 {
1248 for (d = in_eval ? oldoldbufptr : linestart;
1249 d < bufend && *d != '\n';
1250 d++)
1251 {
1252 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1253 croak("Can't use \"my %s\" in sort comparison",
1254 tokenbuf);
1255 }
1256 }
1257 }
1258
1259 yylval.opval = newOP(OP_PADANY, 0);
1260 yylval.opval->op_targ = tmp;
1261 return PRIVATEREF;
1262 }
1263
1264 /* Force them to make up their mind on "@foo". */
1265 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1266 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
36477c24 1267 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
bbce6d69 1268 char tmpbuf[1024];
9607fc9c 1269 sprintf(tmpbuf, "In string, %s now must be written as \\%s",
1270 tokenbuf, tokenbuf);
bbce6d69 1271 yyerror(tmpbuf);
1272 }
1273 }
1274
1275 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1276 yylval.opval->op_private = OPpCONST_ENTERED;
1277 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1278 ((tokenbuf[0] == '$') ? SVt_PV
1279 : (tokenbuf[0] == '@') ? SVt_PVAV
1280 : SVt_PVHV));
1281 return WORD;
1282 }
1283
79072805
LW		 1284 switch (lex_state) {
1285#ifdef COMMENTARY
1286 case LEX_NORMAL: /* Some compilers will produce faster */
1287 case LEX_INTERPNORMAL: /* code if we comment these out. */
1288 break;
1289#endif
1290
1291 case LEX_KNOWNEXT:
1292 nexttoke--;
1293 yylval = nextval[nexttoke];
463ee0b2 1294 if (!nexttoke) {
79072805 1295 lex_state = lex_defer;
463ee0b2 1296 expect = lex_expect;
a0d0e21e 1297 lex_defer = LEX_NORMAL;
463ee0b2 1298 }
79072805
LW		 1299 return(nexttype[nexttoke]);
1300
1301 case LEX_INTERPCASEMOD:
1302#ifdef DEBUGGING
1303 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1304 croak("panic: INTERPCASEMOD");
79072805
LW		 1305#endif
1306 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1307 char oldmod;
79072805 1308 if (lex_casemods) {
a0d0e21e
LW		 1309 oldmod = lex_casestack[--lex_casemods];
1310 lex_casestack[lex_casemods] = '\0';
1311 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1312 bufptr += 2;
1313 lex_state = LEX_INTERPCONCAT;
1314 }
79072805
LW		 1315 return ')';
1316 }
a0d0e21e
LW		 1317 if (bufptr != bufend)
1318 bufptr += 2;
1319 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1320 return yylex();
1321 }
1322 else {
1323 s = bufptr + 1;
1324 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1325 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1326 if (strchr("LU", *s) &&
1327 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1328 {
1329 lex_casestack[--lex_casemods] = '\0';
1330 return ')';
1331 }
1332 if (lex_casemods > 10) {
89bfa8cd 1333 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1334 if (newlb != lex_casestack) {
1335 SAVEFREEPV(newlb);
1336 lex_casestack = newlb;
1337 }
1338 }
1339 lex_casestack[lex_casemods++] = *s;
1340 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1341 lex_state = LEX_INTERPCONCAT;
1342 nextval[nexttoke].ival = 0;
1343 force_next('(');
1344 if (*s == 'l')
1345 nextval[nexttoke].ival = OP_LCFIRST;
1346 else if (*s == 'u')
1347 nextval[nexttoke].ival = OP_UCFIRST;
1348 else if (*s == 'L')
1349 nextval[nexttoke].ival = OP_LC;
1350 else if (*s == 'U')
1351 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1352 else if (*s == 'Q')
1353 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1354 else
463ee0b2 1355 croak("panic: yylex");
79072805
LW		 1356 bufptr = s + 1;
1357 force_next(FUNC);
1358 if (lex_starts) {
1359 s = bufptr;
463ee0b2 1360 lex_starts = 0;
79072805
LW		 1361 Aop(OP_CONCAT);
1362 }
1363 else
1364 return yylex();
1365 }
1366
55497cff 1367 case LEX_INTERPPUSH:
1368 return sublex_push();
1369
79072805
LW		 1370 case LEX_INTERPSTART:
1371 if (bufptr == bufend)
1372 return sublex_done();
1373 expect = XTERM;
1374 lex_dojoin = (*bufptr == '@');
1375 lex_state = LEX_INTERPNORMAL;
1376 if (lex_dojoin) {
1377 nextval[nexttoke].ival = 0;
1378 force_next(',');
a0d0e21e 1379 force_ident("\"", '$');
79072805
LW		 1380 nextval[nexttoke].ival = 0;
1381 force_next('$');
1382 nextval[nexttoke].ival = 0;
1383 force_next('(');
1384 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1385 force_next(FUNC);
1386 }
1387 if (lex_starts++) {
1388 s = bufptr;
1389 Aop(OP_CONCAT);
1390 }
68dc0745 1391 return yylex();
79072805
LW		 1392
1393 case LEX_INTERPENDMAYBE:
1394 if (intuit_more(bufptr)) {
1395 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1396 break;
1397 }
1398 /* FALL THROUGH */
1399
1400 case LEX_INTERPEND:
1401 if (lex_dojoin) {
1402 lex_dojoin = FALSE;
1403 lex_state = LEX_INTERPCONCAT;
1404 return ')';
1405 }
1406 /* FALLTHROUGH */
1407 case LEX_INTERPCONCAT:
1408#ifdef DEBUGGING
1409 if (lex_brackets)
463ee0b2 1410 croak("panic: INTERPCONCAT");
79072805
LW		 1411#endif
1412 if (bufptr == bufend)
1413 return sublex_done();
1414
ed6116ce 1415 if (SvIVX(linestr) == '\'') {
79072805
LW		 1416 SV *sv = newSVsv(linestr);
1417 if (!lex_inpat)
1418 sv = q(sv);
1419 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1420 s = bufend;
1421 }
1422 else {
1423 s = scan_const(bufptr);
1424 if (*s == '\\')
1425 lex_state = LEX_INTERPCASEMOD;
1426 else
1427 lex_state = LEX_INTERPSTART;
1428 }
1429
1430 if (s != bufptr) {
1431 nextval[nexttoke] = yylval;
463ee0b2 1432 expect = XTERM;
79072805
LW		 1433 force_next(THING);
1434 if (lex_starts++)
1435 Aop(OP_CONCAT);
1436 else {
1437 bufptr = s;
1438 return yylex();
1439 }
1440 }
1441
1442 return yylex();
a0d0e21e
LW		 1443 case LEX_FORMLINE:
1444 lex_state = LEX_NORMAL;
1445 s = scan_formline(bufptr);
1446 if (!lex_formbrack)
1447 goto rightbracket;
1448 OPERATOR(';');
79072805
LW		 1449 }
1450
1451 s = bufptr;
a687059c
LW		 1452 oldoldbufptr = oldbufptr;
1453 oldbufptr = s;
79072805 1454 DEBUG_p( {
760ac839 1455 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1456 } )
463ee0b2
LW		 1457
1458 retry:
378cc40b
LW		 1459 switch (*s) {
1460 default:
a0d0e21e 1461 warn("Unrecognized character \\%03o ignored", *s++ & 255);
378cc40b 1462 goto retry;
e929a76b
LW		 1463 case 4:
1464 case 26:
1465 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1466 case 0:
463ee0b2 1467 if (!rsfp) {
55497cff 1468 last_uni = 0;
1469 last_lop = 0;
463ee0b2
LW		 1470 if (lex_brackets)
1471 yyerror("Missing right bracket");
79072805 1472 TOKEN(0);
463ee0b2 1473 }
a687059c
LW		 1474 if (s++ < bufend)
1475 goto retry; /* ignore stray nulls */
2f3197b3 1476 last_uni = 0;
79072805 1477 last_lop = 0;
a0d0e21e 1478 if (!in_eval && !preambled) {
79072805 1479 preambled = TRUE;
a0d0e21e 1480 sv_setpv(linestr,incl_perldb());
91b7def8 1481 if (SvCUR(linestr))
1482 sv_catpv(linestr,";");
1483 if (preambleav){
1484 while(AvFILL(preambleav) >= 0) {
1485 SV *tmpsv = av_shift(preambleav);
1486 sv_catsv(linestr, tmpsv);
1487 sv_catpv(linestr, ";");
1488 sv_free(tmpsv);
1489 }
1490 sv_free((SV*)preambleav);
1491 preambleav = NULL;
1492 }
79072805
LW		 1493 if (minus_n || minus_p) {
1494 sv_catpv(linestr, "LINE: while (<>) {");
1495 if (minus_l)
a0d0e21e 1496 sv_catpv(linestr,"chomp;");
8fd239a7
CS		 1497 if (minus_a) {
1498 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1499 if (gv)
1500 GvIMPORTED_AV_on(gv);
1501 if (minus_F) {
1502 char tmpbuf1[50];
1503 if ( splitstr[0] == '/' ||
1504 splitstr[0] == '\'' ||
1505 splitstr[0] == '"' )
2304df62 1506 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
8fd239a7 1507 else
2304df62 1508 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
8fd239a7 1509 sv_catpv(linestr,tmpbuf1);
2304df62
AD		 1510 }
1511 else
1512 sv_catpv(linestr,"@F=split(' ');");
1513 }
79072805 1514 }
a0d0e21e 1515 sv_catpv(linestr, "\n");
fd049845 1516 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1517 bufend = SvPVX(linestr) + SvCUR(linestr);
a0d0e21e
LW		 1518 if (perldb && curstash != debstash) {
1519 SV *sv = NEWSV(85,0);
1520
1521 sv_upgrade(sv, SVt_PVMG);
1522 sv_setsv(sv,linestr);
1523 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1524 }
79072805 1525 goto retry;
a687059c 1526 }
e929a76b 1527 do {
fd049845 1528 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1529 fake_eof:
395c3793 1530 if (rsfp) {
a0d0e21e 1531 if (preprocess && !in_eval)
79072805 1532 (void)my_pclose(rsfp);
760ac839
LW		 1533 else if ((PerlIO *)rsfp == PerlIO_stdin())
1534 PerlIO_clearerr(rsfp);
395c3793 1535 else
760ac839 1536 (void)PerlIO_close(rsfp);
395c3793
LW		 1537 rsfp = Nullfp;
1538 }
a0d0e21e 1539 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1540 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1541 sv_catpv(linestr,";}");
fd049845 1542 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1543 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1544 minus_n = minus_p = 0;
1545 goto retry;
1546 }
fd049845 1547 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1548 sv_setpv(linestr,"");
1549 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1550 }
a0d0e21e
LW		 1551 if (doextract) {
1552 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1553 doextract = FALSE;
1554
1555 /* Incest with pod. */
1556 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1557 sv_setpv(linestr, "");
fd049845 1558 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1559 bufend = SvPVX(linestr) + SvCUR(linestr);
1560 doextract = FALSE;
1561 }
1562 }
463ee0b2 1563 incline(s);
e929a76b 1564 } while (doextract);
fd049845 1565 oldoldbufptr = oldbufptr = bufptr = linestart = s;
8990e307 1566 if (perldb && curstash != debstash) {
79072805 1567 SV *sv = NEWSV(85,0);
a687059c 1568
93a17b20 1569 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1570 sv_setsv(sv,linestr);
1571 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1572 }
463ee0b2 1573 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1574 if (curcop->cop_line == 1) {
1575 while (s < bufend && isSPACE(*s))
1576 s++;
a0d0e21e 1577 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1578 s++;
44a8e56a 1579 d = Nullch;
1580 if (!in_eval) {
1581 if (*s == '#' && *(s+1) == '!')
1582 d = s + 2;
1583#ifdef ALTERNATE_SHEBANG
1584 else {
1585 static char as[] = ALTERNATE_SHEBANG;
1586 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1587 d = s + (sizeof(as) - 1);
1588 }
1589#endif /* ALTERNATE_SHEBANG */
1590 }
1591 if (d) {
b8378b72 1592 char *ipath;
774d564b 1593 char *ipathend;
b8378b72 1594
774d564b 1595 while (isSPACE(*d))
b8378b72
CS		 1596 d++;
1597 ipath = d;
774d564b 1598 while (*d && !isSPACE(*d))
1599 d++;
1600 ipathend = d;
1601
1602#ifdef ARG_ZERO_IS_SCRIPT
1603 if (ipathend > ipath) {
1604 /*
1605 * HP-UX (at least) sets argv[0] to the script name,
1606 * which makes $^X incorrect. And Digital UNIX and Linux,
1607 * at least, set argv[0] to the basename of the Perl
1608 * interpreter. So, having found "#!", we'll set it right.
1609 */
1610 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1611 assert(SvPOK(x) || SvGMAGICAL(x));
9607fc9c 1612 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
774d564b 1613 sv_setpvn(x, ipath, ipathend - ipath);
9607fc9c 1614 SvSETMAGIC(x);
1615 }
774d564b 1616 TAINT_NOT; /* $^X is always tainted, but that's OK */
8ebc5c01 1617 }
774d564b 1618#endif /* ARG_ZERO_IS_SCRIPT */
b8378b72
CS		 1619
1620 /*
1621 * Look for options.
1622 */
748a9306
LW		 1623 d = instr(s,"perl -");
1624 if (!d)
1625 d = instr(s,"perl");
44a8e56a 1626#ifdef ALTERNATE_SHEBANG
1627 /*
1628 * If the ALTERNATE_SHEBANG on this system starts with a
1629 * character that can be part of a Perl expression, then if
1630 * we see it but not "perl", we're probably looking at the
1631 * start of Perl code, not a request to hand off to some
1632 * other interpreter. Similarly, if "perl" is there, but
1633 * not in the first 'word' of the line, we assume the line
1634 * contains the start of the Perl program.
44a8e56a 1635 */
1636 if (d && *s != '#') {
774d564b 1637 char *c = ipath;
44a8e56a 1638 while (*c && !strchr("; \t\r\n\f\v#", *c))
1639 c++;
1640 if (c < d)
1641 d = Nullch; /* "perl" not in first word; ignore */
1642 else
1643 *s = '#'; /* Don't try to parse shebang line */
1644 }
774d564b 1645#endif /* ALTERNATE_SHEBANG */
748a9306 1646 if (!d &&
44a8e56a 1647 *s == '#' &&
774d564b 1648 ipathend > ipath &&
748a9306
LW		 1649 !minus_c &&
1650 !instr(s,"indir") &&
1651 instr(origargv[0],"perl"))
1652 {
9f68db38 1653 char **newargv;
9f68db38 1654
774d564b 1655 *ipathend = '\0';
1656 s = ipathend + 1;
de3bb511 1657 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1658 s++;
1659 if (s < bufend) {
1660 Newz(899,newargv,origargc+3,char*);
1661 newargv[1] = s;
de3bb511 1662 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1663 s++;
1664 *s = '\0';
1665 Copy(origargv+1, newargv+2, origargc+1, char*);
1666 }
1667 else
1668 newargv = origargv;
774d564b 1669 newargv[0] = ipath;
1670 execv(ipath, newargv);
1671 croak("Can't exec %s", ipath);
9f68db38 1672 }
748a9306 1673 if (d) {
a0d0e21e
LW		 1674 int oldpdb = perldb;
1675 int oldn = minus_n;
1676 int oldp = minus_p;
748a9306
LW		 1677
1678 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1679 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1680
1681 if (*d++ == '-') {
1682 while (d = moreswitches(d)) ;
1683 if (perldb && !oldpdb ||
b084f20b 1684 ( minus_n || minus_p ) && !(oldn || oldp) )
1685 /* if we have already added "LINE: while (<>) {",
1686 we must not do it again */
748a9306
LW		 1687 {
1688 sv_setpv(linestr, "");
fd049845 1689 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1690 bufend = SvPVX(linestr) + SvCUR(linestr);
1691 preambled = FALSE;
1692 if (perldb)
1693 (void)gv_fetchfile(origfilename);
1694 goto retry;
1695 }
a0d0e21e 1696 }
79072805 1697 }
9f68db38 1698 }
79072805 1699 }
85e6fe83 1700 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1701 bufptr = s;
1702 lex_state = LEX_FORMLINE;
1703 return yylex();
ae986130 1704 }
378cc40b 1705 goto retry;
4fdae800 1706 case '\r':
ff0cee69 1707 croak("Illegal character \\%03o (carriage return)", '\r');
4fdae800 1708 case ' ': case '\t': case '\f': case 013:
378cc40b
LW		 1709 s++;
1710 goto retry;
378cc40b 1711 case '#':
e929a76b 1712 case '\n':
79072805 1713 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1714 d = bufend;
1715 while (s < d && *s != '\n')
378cc40b 1716 s++;
0f85fab0 1717 if (s < d)
378cc40b 1718 s++;
463ee0b2 1719 incline(s);
85e6fe83 1720 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1721 bufptr = s;
1722 lex_state = LEX_FORMLINE;
1723 return yylex();
a687059c 1724 }
378cc40b 1725 }
a687059c 1726 else {
378cc40b 1727 *s = '\0';
a687059c
LW		 1728 bufend = s;
1729 }
378cc40b
LW		 1730 goto retry;
1731 case '-':
79072805 1732 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1733 s++;
748a9306
LW		 1734 bufptr = s;
1735 tmp = *s++;
1736
1737 while (s < bufend && (*s == ' ' || *s == '\t'))
1738 s++;
1739
1740 if (strnEQ(s,"=>",2)) {
1741 if (dowarn)
1742 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
ff0cee69 1743 (int)tmp, (int)tmp);
748a9306
LW		 1744 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1745 OPERATOR('-'); /* unary minus */
1746 }
e334a159 1747 last_uni = oldbufptr;
a0d0e21e 1748 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1749 switch (tmp) {
79072805
LW		 1750 case 'r': FTST(OP_FTEREAD);
1751 case 'w': FTST(OP_FTEWRITE);
1752 case 'x': FTST(OP_FTEEXEC);
1753 case 'o': FTST(OP_FTEOWNED);
1754 case 'R': FTST(OP_FTRREAD);
1755 case 'W': FTST(OP_FTRWRITE);
1756 case 'X': FTST(OP_FTREXEC);
1757 case 'O': FTST(OP_FTROWNED);
1758 case 'e': FTST(OP_FTIS);
1759 case 'z': FTST(OP_FTZERO);
1760 case 's': FTST(OP_FTSIZE);
1761 case 'f': FTST(OP_FTFILE);
1762 case 'd': FTST(OP_FTDIR);
1763 case 'l': FTST(OP_FTLINK);
1764 case 'p': FTST(OP_FTPIPE);
1765 case 'S': FTST(OP_FTSOCK);
1766 case 'u': FTST(OP_FTSUID);
1767 case 'g': FTST(OP_FTSGID);
1768 case 'k': FTST(OP_FTSVTX);
1769 case 'b': FTST(OP_FTBLK);
1770 case 'c': FTST(OP_FTCHR);
1771 case 't': FTST(OP_FTTTY);
1772 case 'T': FTST(OP_FTTEXT);
1773 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1774 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1775 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1776 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1777 default:
ff0cee69 1778 croak("Unrecognized file test: -%c", (int)tmp);
378cc40b
LW		 1779 break;
1780 }
1781 }
a687059c
LW		 1782 tmp = *s++;
1783 if (*s == tmp) {
1784 s++;
79072805
LW		 1785 if (expect == XOPERATOR)
1786 TERM(POSTDEC);
1787 else
1788 OPERATOR(PREDEC);
1789 }
1790 else if (*s == '>') {
1791 s++;
1792 s = skipspace(s);
1793 if (isIDFIRST(*s)) {
a0d0e21e 1794 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1795 TOKEN(ARROW);
79072805 1796 }
748a9306
LW		 1797 else if (*s == '$')
1798 OPERATOR(ARROW);
463ee0b2 1799 else
748a9306 1800 TERM(ARROW);
a687059c 1801 }
79072805
LW		 1802 if (expect == XOPERATOR)
1803 Aop(OP_SUBTRACT);
1804 else {
2f3197b3
LW		 1805 if (isSPACE(*s) || !isSPACE(*bufptr))
1806 check_uni();
79072805 1807 OPERATOR('-'); /* unary minus */
2f3197b3 1808 }
79072805 1809
378cc40b 1810 case '+':
a687059c
LW		 1811 tmp = *s++;
1812 if (*s == tmp) {
378cc40b 1813 s++;
79072805
LW		 1814 if (expect == XOPERATOR)
1815 TERM(POSTINC);
1816 else
1817 OPERATOR(PREINC);
378cc40b 1818 }
79072805
LW		 1819 if (expect == XOPERATOR)
1820 Aop(OP_ADD);
1821 else {
2f3197b3
LW		 1822 if (isSPACE(*s) || !isSPACE(*bufptr))
1823 check_uni();
a687059c 1824 OPERATOR('+');
2f3197b3 1825 }
a687059c 1826
378cc40b 1827 case '*':
79072805
LW		 1828 if (expect != XOPERATOR) {
1829 s = scan_ident(s, bufend, tokenbuf, TRUE);
463ee0b2 1830 expect = XOPERATOR;
a0d0e21e
LW		 1831 force_ident(tokenbuf, '*');
1832 if (!*tokenbuf)
1833 PREREF('*');
79072805 1834 TERM('*');
a687059c 1835 }
79072805
LW		 1836 s++;
1837 if (*s == '*') {
a687059c 1838 s++;
79072805 1839 PWop(OP_POW);
a687059c 1840 }
79072805
LW		 1841 Mop(OP_MULTIPLY);
1842
378cc40b 1843 case '%':
bbce6d69 1844 if (expect == XOPERATOR) {
1845 ++s;
1846 Mop(OP_MODULO);
a687059c 1847 }
bbce6d69 1848 tokenbuf[0] = '%';
1849 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1850 if (!tokenbuf[1]) {
1851 if (s == bufend)
1852 yyerror("Final % should be \\% or %name");
1853 PREREF('%');
1854 }
1855 pending_ident = '%';
1856 TERM('%');
a687059c 1857
378cc40b 1858 case '^':
79072805 1859 s++;
a0d0e21e 1860 BOop(OP_BIT_XOR);
79072805
LW		 1861 case '[':
1862 lex_brackets++;
1863 /* FALL THROUGH */
378cc40b 1864 case '~':
378cc40b 1865 case ',':
378cc40b
LW		 1866 tmp = *s++;
1867 OPERATOR(tmp);
a0d0e21e
LW		 1868 case ':':
1869 if (s[1] == ':') {
1870 len = 0;
1871 goto just_a_word;
1872 }
1873 s++;
1874 OPERATOR(':');
8990e307
LW		 1875 case '(':
1876 s++;
a0d0e21e 1877 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1878 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1879 else
1880 expect = XTERM;
1881 TOKEN('(');
378cc40b 1882 case ';':
79072805
LW		 1883 if (curcop->cop_line < copline)
1884 copline = curcop->cop_line;
378cc40b
LW		 1885 tmp = *s++;
1886 OPERATOR(tmp);
1887 case ')':
378cc40b 1888 tmp = *s++;
16d20bd9
AD		 1889 s = skipspace(s);
1890 if (*s == '{')
1891 PREBLOCK(tmp);
378cc40b 1892 TERM(tmp);
79072805
LW		 1893 case ']':
1894 s++;
463ee0b2
LW		 1895 if (lex_brackets <= 0)
1896 yyerror("Unmatched right bracket");
1897 else
1898 --lex_brackets;
79072805 1899 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1900 if (lex_brackets == 0) {
a0d0e21e 1901 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1902 lex_state = LEX_INTERPEND;
1903 }
1904 }
4633a7c4 1905 TERM(']');
79072805
LW		 1906 case '{':
1907 leftbracket:
79072805 1908 s++;
8990e307 1909 if (lex_brackets > 100) {
89bfa8cd 1910 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1911 if (newlb != lex_brackstack) {
1912 SAVEFREEPV(newlb);
1913 lex_brackstack = newlb;
1914 }
1915 }
a0d0e21e
LW		 1916 switch (expect) {
1917 case XTERM:
1918 if (lex_formbrack) {
1919 s--;
1920 PRETERMBLOCK(DO);
1921 }
1922 if (oldoldbufptr == last_lop)
1923 lex_brackstack[lex_brackets++] = XTERM;
1924 else
1925 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1926 OPERATOR(HASHBRACK);
a0d0e21e 1927 case XOPERATOR:
748a9306
LW		 1928 while (s < bufend && (*s == ' ' || *s == '\t'))
1929 s++;
44a8e56a 1930 d = s;
1931 tokenbuf[0] = '\0';
1932 if (d < bufend && *d == '-') {
1933 tokenbuf[0] = '-';
1934 d++;
1935 while (d < bufend && (*d == ' ' || *d == '\t'))
1936 d++;
1937 }
1938 if (d < bufend && isIDFIRST(*d)) {
1939 d = scan_word(d, tokenbuf + 1, FALSE, &len);
748a9306
LW		 1940 while (d < bufend && (*d == ' ' || *d == '\t'))
1941 d++;
1942 if (*d == '}') {
44a8e56a 1943 char minus = (tokenbuf[0] == '-');
748a9306 1944 if (dowarn &&
44a8e56a 1945 (keyword(tokenbuf + 1, len) ||
1946 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1947 perl_get_cv(tokenbuf + 1, FALSE) ))
748a9306 1948 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
44a8e56a 1949 tokenbuf + !minus, tokenbuf + !minus);
1950 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1951 if (minus)
1952 force_next('-');
748a9306
LW		 1953 }
1954 }
1955 /* FALL THROUGH */
1956 case XBLOCK:
a0d0e21e 1957 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 1958 expect = XSTATE;
a0d0e21e
LW		 1959 break;
1960 case XTERMBLOCK:
1961 lex_brackstack[lex_brackets++] = XOPERATOR;
1962 expect = XSTATE;
1963 break;
1964 default: {
1965 char *t;
1966 if (oldoldbufptr == last_lop)
1967 lex_brackstack[lex_brackets++] = XTERM;
1968 else
1969 lex_brackstack[lex_brackets++] = XOPERATOR;
1970 s = skipspace(s);
1971 if (*s == '}')
1972 OPERATOR(HASHBRACK);
1973 if (isALPHA(*s)) {
c07a80fd 1974 for (t = s; t < bufend && isALNUM(*t); t++) ;
a0d0e21e
LW		 1975 }
1976 else if (*s == '\'' || *s == '"') {
1977 t = strchr(s+1,*s);
1978 if (!t++)
1979 t = s;
1980 }
1981 else
1982 t = s;
1983 while (t < bufend && isSPACE(*t))
1984 t++;
1985 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1986 OPERATOR(HASHBRACK);
1987 if (expect == XREF)
1988 expect = XTERM;
1989 else {
1990 lex_brackstack[lex_brackets-1] = XSTATE;
1991 expect = XSTATE;
1992 }
8990e307 1993 }
a0d0e21e 1994 break;
463ee0b2 1995 }
79072805
LW		 1996 yylval.ival = curcop->cop_line;
1997 if (isSPACE(*s) || *s == '#')
1998 copline = NOLINE; /* invalidate current command line number */
79072805 1999 TOKEN('{');
378cc40b 2000 case '}':
79072805
LW		 2001 rightbracket:
2002 s++;
463ee0b2
LW		 2003 if (lex_brackets <= 0)
2004 yyerror("Unmatched right bracket");
2005 else
2006 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 2007 if (lex_brackets < lex_formbrack)
2008 lex_formbrack = 0;
79072805 2009 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 2010 if (lex_brackets == 0) {
79072805
LW		 2011 if (lex_fakebrack) {
2012 lex_state = LEX_INTERPEND;
2013 bufptr = s;
2014 return yylex(); /* ignore fake brackets */
2015 }
fa83b5b6 2016 if (*s == '-' && s[1] == '>')
2017 lex_state = LEX_INTERPENDMAYBE;
2018 else if (*s != '[' && *s != '{')
79072805
LW		 2019 lex_state = LEX_INTERPEND;
2020 }
2021 }
748a9306
LW		 2022 if (lex_brackets < lex_fakebrack) {
2023 bufptr = s;
2024 lex_fakebrack = 0;
2025 return yylex(); /* ignore fake brackets */
2026 }
79072805
LW		 2027 force_next('}');
2028 TOKEN(';');
378cc40b
LW		 2029 case '&':
2030 s++;
2031 tmp = *s++;
2032 if (tmp == '&')
a0d0e21e 2033 AOPERATOR(ANDAND);
378cc40b 2034 s--;
463ee0b2 2035 if (expect == XOPERATOR) {
fd049845 2036 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 2037 curcop->cop_line--;
2038 warn(warn_nosemi);
2039 curcop->cop_line++;
2040 }
79072805 2041 BAop(OP_BIT_AND);
463ee0b2 2042 }
79072805
LW		 2043
2044 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
463ee0b2
LW		 2045 if (*tokenbuf) {
2046 expect = XOPERATOR;
a0d0e21e 2047 force_ident(tokenbuf, '&');
463ee0b2 2048 }
79072805
LW		 2049 else
2050 PREREF('&');
c07a80fd 2051 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 2052 TERM('&');
2053
378cc40b
LW		 2054 case '|':
2055 s++;
2056 tmp = *s++;
2057 if (tmp == '|')
a0d0e21e 2058 AOPERATOR(OROR);
378cc40b 2059 s--;
79072805 2060 BOop(OP_BIT_OR);
378cc40b
LW		 2061 case '=':
2062 s++;
2063 tmp = *s++;
2064 if (tmp == '=')
79072805
LW		 2065 Eop(OP_EQ);
2066 if (tmp == '>')
2067 OPERATOR(',');
378cc40b 2068 if (tmp == '~')
79072805 2069 PMop(OP_MATCH);
463ee0b2 2070 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
ff0cee69 2071 warn("Reversed %c= operator",(int)tmp);
378cc40b 2072 s--;
748a9306 2073 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 2074 (s == linestart+1 || s[-2] == '\n') )
748a9306 2075 {
a5f75d66
AD		 2076 if (in_eval && !rsfp) {
2077 d = bufend;
2078 while (s < d) {
2079 if (*s++ == '\n') {
2080 incline(s);
2081 if (strnEQ(s,"=cut",4)) {
2082 s = strchr(s,'\n');
2083 if (s)
2084 s++;
2085 else
2086 s = d;
2087 incline(s);
2088 goto retry;
2089 }
2090 }
2091 }
2092 goto retry;
2093 }
a0d0e21e
LW		 2094 s = bufend;
2095 doextract = TRUE;
2096 goto retry;
2097 }
2098 if (lex_brackets < lex_formbrack) {
2099 char *t;
2100 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2101 if (*t == '\n' || *t == '#') {
2102 s--;
2103 expect = XBLOCK;
2104 goto leftbracket;
2105 }
79072805 2106 }
a0d0e21e
LW		 2107 yylval.ival = 0;
2108 OPERATOR(ASSIGNOP);
378cc40b
LW		 2109 case '!':
2110 s++;
2111 tmp = *s++;
2112 if (tmp == '=')
79072805 2113 Eop(OP_NE);
378cc40b 2114 if (tmp == '~')
79072805 2115 PMop(OP_NOT);
378cc40b
LW		 2116 s--;
2117 OPERATOR('!');
2118 case '<':
79072805 2119 if (expect != XOPERATOR) {
93a17b20 2120 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2121 check_uni();
79072805
LW		 2122 if (s[1] == '<')
2123 s = scan_heredoc(s);
2124 else
2125 s = scan_inputsymbol(s);
2126 TERM(sublex_start());
378cc40b
LW		 2127 }
2128 s++;
2129 tmp = *s++;
2130 if (tmp == '<')
79072805 2131 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2132 if (tmp == '=') {
2133 tmp = *s++;
2134 if (tmp == '>')
79072805 2135 Eop(OP_NCMP);
395c3793 2136 s--;
79072805 2137 Rop(OP_LE);
395c3793 2138 }
378cc40b 2139 s--;
79072805 2140 Rop(OP_LT);
378cc40b
LW		 2141 case '>':
2142 s++;
2143 tmp = *s++;
2144 if (tmp == '>')
79072805 2145 SHop(OP_RIGHT_SHIFT);
378cc40b 2146 if (tmp == '=')
79072805 2147 Rop(OP_GE);
378cc40b 2148 s--;
79072805 2149 Rop(OP_GT);
378cc40b
LW		 2150
2151 case '$':
bbce6d69 2152 CLINE;
2153
2154 if (expect == XOPERATOR) {
2155 if (lex_formbrack && lex_brackets == lex_formbrack) {
2156 expect = XTERM;
2157 depcom();
2158 return ','; /* grandfather non-comma-format format */
8990e307 2159 }
bbce6d69 2160 }
2161
2162 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2163 if (expect == XOPERATOR)
2164 no_op("Array length", bufptr);
2165 tokenbuf[0] = '@';
2166 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2167 if (!tokenbuf[1])
a0d0e21e 2168 PREREF(DOLSHARP);
463ee0b2 2169 expect = XOPERATOR;
bbce6d69 2170 pending_ident = '#';
463ee0b2 2171 TOKEN(DOLSHARP);
79072805 2172 }
bbce6d69 2173
2174 if (expect == XOPERATOR)
2175 no_op("Scalar", bufptr);
2176 tokenbuf[0] = '$';
93a17b20 2177 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
bbce6d69 2178 if (!tokenbuf[1]) {
2179 if (s == bufend)
2180 yyerror("Final $ should be \\$ or $name");
2181 PREREF('$');
8990e307 2182 }
a0d0e21e 2183
bbce6d69 2184 /* This kludge not intended to be bulletproof. */
2185 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2186 yylval.opval = newSVOP(OP_CONST, 0,
2187 newSViv((IV)compiling.cop_arybase));
2188 yylval.opval->op_private = OPpCONST_ARYBASE;
2189 TERM(THING);
2190 }
2191
ff68c719 2192 d = s;
2193 if (lex_state == LEX_NORMAL)
2194 s = skipspace(s);
2195
bbce6d69 2196 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2197 char *t;
2198 if (*s == '[') {
2199 tokenbuf[0] = '@';
2200 if (dowarn) {
2201 for(t = s + 1;
2202 isSPACE(*t) || isALNUM(*t) || *t == '$';
2203 t++) ;
a0d0e21e
LW		 2204 if (*t++ == ',') {
2205 bufptr = skipspace(bufptr);
bbce6d69 2206 while (t < bufend && *t != ']')
2207 t++;
a0d0e21e 2208 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2209 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2210 }
2211 }
bbce6d69 2212 }
2213 else if (*s == '{') {
2214 tokenbuf[0] = '%';
2215 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2216 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2217 {
a0d0e21e 2218 char tmpbuf[1024];
a0d0e21e
LW		 2219 STRLEN len;
2220 for (t++; isSPACE(*t); t++) ;
748a9306
LW		 2221 if (isIDFIRST(*t)) {
2222 t = scan_word(t, tmpbuf, TRUE, &len);
2223 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2224 warn("You need to quote \"%s\"", tmpbuf);
2225 }
93a17b20
LW		 2226 }
2227 }
2f3197b3 2228 }
bbce6d69 2229
2230 expect = XOPERATOR;
ff68c719 2231 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
bbce6d69 2232 bool islop = (last_lop == oldoldbufptr);
bbce6d69 2233 if (!islop || last_lop_op == OP_GREPSTART)
2234 expect = XOPERATOR;
2235 else if (strchr("$@\"'`q", *s))
2236 expect = XTERM; /* e.g. print $fh "foo" */
2237 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2238 expect = XTERM; /* e.g. print $fh &sub */
68dc0745 2239 else if (isIDFIRST(*s)) {
2240 char tmpbuf[1024];
2241 scan_word(s, tmpbuf, TRUE, &len);
2242 if (keyword(tmpbuf, len))
2243 expect = XTERM; /* e.g. print $fh length() */
2244 else {
2245 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2246 if (gv && GvCVu(gv))
2247 expect = XTERM; /* e.g. print $fh subr() */
2248 }
2249 }
bbce6d69 2250 else if (isDIGIT(*s))
2251 expect = XTERM; /* e.g. print $fh 3 */
2252 else if (*s == '.' && isDIGIT(s[1]))
2253 expect = XTERM; /* e.g. print $fh .3 */
2254 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2255 expect = XTERM; /* e.g. print $fh -1 */
2256 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2257 expect = XTERM; /* print $fh <<"EOF" */
2258 }
2259 pending_ident = '$';
79072805 2260 TOKEN('$');
378cc40b
LW		 2261
2262 case '@':
8990e307 2263 if (expect == XOPERATOR)
bbce6d69 2264 no_op("Array", s);
2265 tokenbuf[0] = '@';
2266 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2267 if (!tokenbuf[1]) {
2268 if (s == bufend)
2269 yyerror("Final @ should be \\@ or @name");
2270 PREREF('@');
2271 }
ff68c719 2272 if (lex_state == LEX_NORMAL)
2273 s = skipspace(s);
bbce6d69 2274 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2275 if (*s == '{')
2276 tokenbuf[0] = '%';
a0d0e21e
LW		 2277
2278 /* Warn about @ where they meant $. */
2279 if (dowarn) {
2280 if (*s == '[' || *s == '{') {
2281 char *t = s + 1;
2282 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2283 t++;
2284 if (*t == '}' || *t == ']') {
2285 t++;
2286 bufptr = skipspace(bufptr);
2287 warn("Scalar value %.*s better written as $%.*s",
2288 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2289 }
93a17b20
LW		 2290 }
2291 }
463ee0b2 2292 }
bbce6d69 2293 pending_ident = '@';
79072805 2294 TERM('@');
378cc40b
LW		 2295
2296 case '/': /* may either be division or pattern */
2297 case '?': /* may either be conditional or pattern */
79072805 2298 if (expect != XOPERATOR) {
2f3197b3 2299 check_uni();
79072805
LW		 2300 s = scan_pat(s);
2301 TERM(sublex_start());
378cc40b
LW		 2302 }
2303 tmp = *s++;
a687059c 2304 if (tmp == '/')
79072805 2305 Mop(OP_DIVIDE);
378cc40b
LW		 2306 OPERATOR(tmp);
2307
2308 case '.':
748a9306 2309 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2310 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2311 lex_formbrack = 0;
8990e307 2312 expect = XSTATE;
79072805
LW		 2313 goto rightbracket;
2314 }
2315 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2316 tmp = *s++;
a687059c
LW		 2317 if (*s == tmp) {
2318 s++;
2f3197b3
LW		 2319 if (*s == tmp) {
2320 s++;
79072805 2321 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2322 }
2323 else
79072805 2324 yylval.ival = 0;
378cc40b 2325 OPERATOR(DOTDOT);
a687059c 2326 }
79072805 2327 if (expect != XOPERATOR)
2f3197b3 2328 check_uni();
79072805 2329 Aop(OP_CONCAT);
378cc40b
LW		 2330 }
2331 /* FALL THROUGH */
2332 case '0': case '1': case '2': case '3': case '4':
2333 case '5': case '6': case '7': case '8': case '9':
79072805 2334 s = scan_num(s);
8990e307
LW		 2335 if (expect == XOPERATOR)
2336 no_op("Number",s);
79072805
LW		 2337 TERM(THING);
2338
2339 case '\'':
8990e307 2340 s = scan_str(s);
463ee0b2 2341 if (expect == XOPERATOR) {
a0d0e21e
LW		 2342 if (lex_formbrack && lex_brackets == lex_formbrack) {
2343 expect = XTERM;
2344 depcom();
2345 return ','; /* grandfather non-comma-format format */
2346 }
463ee0b2 2347 else
8990e307 2348 no_op("String",s);
463ee0b2 2349 }
79072805 2350 if (!s)
85e6fe83 2351 missingterm((char*)0);
79072805
LW		 2352 yylval.ival = OP_CONST;
2353 TERM(sublex_start());
2354
2355 case '"':
8990e307 2356 s = scan_str(s);
463ee0b2 2357 if (expect == XOPERATOR) {
a0d0e21e
LW		 2358 if (lex_formbrack && lex_brackets == lex_formbrack) {
2359 expect = XTERM;
2360 depcom();
2361 return ','; /* grandfather non-comma-format format */
2362 }
463ee0b2 2363 else
8990e307 2364 no_op("String",s);
463ee0b2 2365 }
79072805 2366 if (!s)
85e6fe83 2367 missingterm((char*)0);
4633a7c4
LW		 2368 yylval.ival = OP_CONST;
2369 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2370 if (*d == '$' || *d == '@' || *d == '\\') {
2371 yylval.ival = OP_STRINGIFY;
2372 break;
2373 }
2374 }
79072805
LW		 2375 TERM(sublex_start());
2376
2377 case '`':
2378 s = scan_str(s);
8990e307
LW		 2379 if (expect == XOPERATOR)
2380 no_op("Backticks",s);
79072805 2381 if (!s)
85e6fe83 2382 missingterm((char*)0);
79072805
LW		 2383 yylval.ival = OP_BACKTICK;
2384 set_csh();
2385 TERM(sublex_start());
2386
2387 case '\\':
2388 s++;
748a9306
LW		 2389 if (dowarn && lex_inwhat && isDIGIT(*s))
2390 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2391 if (expect == XOPERATOR)
2392 no_op("Backslash",s);
79072805
LW		 2393 OPERATOR(REFGEN);
2394
2395 case 'x':
2396 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2397 s++;
2398 Mop(OP_REPEAT);
2f3197b3 2399 }
79072805
LW		 2400 goto keylookup;
2401
378cc40b 2402 case '_':
79072805
LW		 2403 case 'a': case 'A':
2404 case 'b': case 'B':
2405 case 'c': case 'C':
2406 case 'd': case 'D':
2407 case 'e': case 'E':
2408 case 'f': case 'F':
2409 case 'g': case 'G':
2410 case 'h': case 'H':
2411 case 'i': case 'I':
2412 case 'j': case 'J':
2413 case 'k': case 'K':
2414 case 'l': case 'L':
2415 case 'm': case 'M':
2416 case 'n': case 'N':
2417 case 'o': case 'O':
2418 case 'p': case 'P':
2419 case 'q': case 'Q':
2420 case 'r': case 'R':
2421 case 's': case 'S':
2422 case 't': case 'T':
2423 case 'u': case 'U':
2424 case 'v': case 'V':
2425 case 'w': case 'W':
2426 case 'X':
2427 case 'y': case 'Y':
2428 case 'z': case 'Z':
2429
2430 keylookup:
748a9306 2431 bufptr = s;
463ee0b2 2432 s = scan_word(s, tokenbuf, FALSE, &len);
8ebc5c01 2433
2434 /* Some keywords can be followed by any delimiter, including ':' */
2435 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2436 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2437 (tokenbuf[0] == 'q' &&
2438 strchr("qwx", tokenbuf[1]))));
2439
2440 /* x::* is just a word, unless x is "CORE" */
2441 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
4633a7c4
LW		 2442 goto just_a_word;
2443
3643fb5f
CS		 2444 d = s;
2445 while (d < bufend && isSPACE(*d))
2446 d++; /* no comments skipped here, or s### is misparsed */
2447
2448 /* Is this a label? */
8ebc5c01 2449 if (!tmp && expect == XSTATE
2450 && d < bufend && *d == ':' && *(d + 1) != ':') {
2451 s = d + 1;
2452 yylval.pval = savepv(tokenbuf);
2453 CLINE;
2454 TOKEN(LABEL);
3643fb5f
CS		 2455 }
2456
2457 /* Check for keywords */
a0d0e21e 2458 tmp = keyword(tokenbuf, len);
748a9306
LW		 2459
2460 /* Is this a word before a => operator? */
748a9306
LW		 2461 if (strnEQ(d,"=>",2)) {
2462 CLINE;
2463 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2464 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2465 tokenbuf, tokenbuf);
2466 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2467 yylval.opval->op_private = OPpCONST_BARE;
2468 TERM(WORD);
2469 }
2470
a0d0e21e
LW		 2471 if (tmp < 0) { /* second-class keyword? */
2472 GV* gv;
2473 if (expect != XOPERATOR &&
a5f75d66
AD		 2474 (*s != ':' || s[1] != ':') &&
2475 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2476 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2477 {
2478 tmp = 0;
2479 }
2480 else
2481 tmp = -tmp;
2482 }
2483
2484 reserved_word:
2485 switch (tmp) {
79072805
LW		 2486
2487 default: /* not a keyword */
93a17b20
LW		 2488 just_a_word: {
2489 GV *gv;
748a9306 2490 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2491
2492 /* Get the rest if it looks like a package qualifier */
2493
a0d0e21e 2494 if (*s == '\'' || *s == ':' && s[1] == ':') {
463ee0b2 2495 s = scan_word(s, tokenbuf + len, TRUE, &len);
a0d0e21e
LW		 2496 if (!len)
2497 croak("Bad name after %s::", tokenbuf);
2498 }
8990e307 2499
3643fb5f 2500 if (expect == XOPERATOR) {
fd049845 2501 if (bufptr == linestart) {
463ee0b2
LW		 2502 curcop->cop_line--;
2503 warn(warn_nosemi);
2504 curcop->cop_line++;
2505 }
2506 else
8990e307 2507 no_op("Bare word",s);
463ee0b2 2508 }
8990e307
LW		 2509
2510 /* Look for a subroutine with this name in current package. */
2511
85e6fe83 2512 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2513
a0d0e21e
LW		 2514 /* Presume this is going to be a bareword of some sort. */
2515
2516 CLINE;
2517 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2518 yylval.opval->op_private = OPpCONST_BARE;
2519
8990e307
LW		 2520 /* See if it's the indirect object for a list operator. */
2521
a0d0e21e
LW		 2522 if (oldoldbufptr &&
2523 oldoldbufptr < bufptr &&
2524 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2525 /* NO SKIPSPACE BEFORE HERE! */
2526 (expect == XREF ||
2527 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2528 {
748a9306
LW		 2529 bool immediate_paren = *s == '(';
2530
a0d0e21e
LW		 2531 /* (Now we can afford to cross potential line boundary.) */
2532 s = skipspace(s);
2533
2534 /* Two barewords in a row may indicate method call. */
2535
2536 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2537 return tmp;
2538
2539 /* If not a declared subroutine, it's an indirect object. */
2540 /* (But it's an indir obj regardless for sort.) */
2541
8e07c86e 2542 if ((last_lop_op == OP_SORT ||
8ebc5c01 2543 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
8e07c86e 2544 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2545 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2546 goto bareword;
93a17b20
LW		 2547 }
2548 }
8990e307
LW		 2549
2550 /* If followed by a paren, it's certainly a subroutine. */
2551
2552 expect = XOPERATOR;
2553 s = skipspace(s);
93a17b20 2554 if (*s == '(') {
79072805 2555 CLINE;
a0d0e21e 2556 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2557 expect = XOPERATOR;
93a17b20 2558 force_next(WORD);
c07a80fd 2559 yylval.ival = 0;
463ee0b2 2560 TOKEN('&');
79072805 2561 }
93a17b20 2562
a0d0e21e 2563 /* If followed by var or block, call it a method (unless sub) */
8990e307 2564
8ebc5c01 2565 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
463ee0b2 2566 last_lop = oldbufptr;
8990e307 2567 last_lop_op = OP_METHOD;
93a17b20 2568 PREBLOCK(METHOD);
463ee0b2
LW		 2569 }
2570
8990e307
LW		 2571 /* If followed by a bareword, see if it looks like indir obj. */
2572
a0d0e21e
LW		 2573 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2574 return tmp;
93a17b20 2575
8990e307
LW		 2576 /* Not a method, so call it a subroutine (if defined) */
2577
8ebc5c01 2578 if (gv && GvCVu(gv)) {
4633a7c4 2579 CV* cv = GvCV(gv);
8990e307 2580 if (*s == '(') {
a5f75d66 2581 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2582 expect = XTERM;
2583 force_next(WORD);
c07a80fd 2584 yylval.ival = 0;
8990e307
LW		 2585 TOKEN('&');
2586 }
748a9306 2587 if (lastchar == '-')
c2960299 2588 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2589 tokenbuf, tokenbuf);
8990e307 2590 last_lop = oldbufptr;
a0d0e21e 2591 last_lop_op = OP_ENTERSUB;
89bfa8cd 2592 /* Check for a constant sub */
760ac839
LW		 2593 {
2594 SV *sv = cv_const_sv(cv);
89bfa8cd 2595 if (sv) {
2596 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2597 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2598 yylval.opval->op_private = 0;
2599 TOKEN(WORD);
2600 }
2601 }
2602
a5f75d66
AD		 2603 /* Resolve to GV now. */
2604 op_free(yylval.opval);
2605 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2606 /* Is there a prototype? */
2607 if (SvPOK(cv)) {
2608 STRLEN len;
2609 char *proto = SvPV((SV*)cv, len);
2610 if (!len)
2611 TERM(FUNC0SUB);
2612 if (strEQ(proto, "$"))
2613 OPERATOR(UNIOPSUB);
2614 if (*proto == '&' && *s == '{') {
2615 sv_setpv(subname,"__ANON__");
2616 PREBLOCK(LSTOPSUB);
2617 }
2618 }
a5f75d66 2619 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2620 expect = XTERM;
2621 force_next(WORD);
2622 TOKEN(NOAMP);
2623 }
748a9306
LW		 2624
2625 if (hints & HINT_STRICT_SUBS &&
2626 lastchar != '-' &&
a0d0e21e 2627 strnNE(s,"->",2) &&
9b01e405 2628 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2629 last_lop_op != OP_ACCEPT &&
2630 last_lop_op != OP_PIPE_OP &&
2631 last_lop_op != OP_SOCKPAIR)
2632 {
2633 warn(
2634 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2635 tokenbuf);
2636 ++error_count;
2637 }
8990e307
LW		 2638
2639 /* Call it a bare word */
2640
748a9306
LW		 2641 bareword:
2642 if (dowarn) {
2643 if (lastchar != '-') {
2644 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2645 if (!*d)
2646 warn(warn_reserved, tokenbuf);
2647 }
2648 }
2649 if (lastchar && strchr("*%&", lastchar)) {
2650 warn("Operator or semicolon missing before %c%s",
2651 lastchar, tokenbuf);
c2960299 2652 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2653 lastchar, lastchar);
2654 }
93a17b20 2655 TOKEN(WORD);
79072805 2656 }
79072805 2657
68dc0745 2658 case KEY___FILE__:
79072805 2659 case KEY___LINE__:
79072805
LW		 2660 if (tokenbuf[2] == 'L')
2661 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2662 else
463ee0b2 2663 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
79072805
LW		 2664 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2665 TERM(THING);
68dc0745 2666
2667 case KEY___PACKAGE__:
2668 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2669 (curstash
2670 ? newSVsv(curstname)
2671 : &sv_undef));
2672 TERM(THING);
79072805 2673
e50aee73 2674 case KEY___DATA__:
79072805
LW		 2675 case KEY___END__: {
2676 GV *gv;
79072805
LW		 2677
2678 /*SUPPRESS 560*/
a5f75d66 2679 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2680 char dname[256];
2681 char *pname = "main";
2682 if (tokenbuf[2] == 'D')
2683 pname = HvNAME(curstash ? curstash : defstash);
2684 sprintf(dname,"%s::DATA", pname);
2685 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
a5f75d66 2686 GvMULTI_on(gv);
79072805 2687 if (!GvIO(gv))
a0d0e21e
LW		 2688 GvIOp(gv) = newIO();
2689 IoIFP(GvIOp(gv)) = rsfp;
2690#if defined(HAS_FCNTL) && defined(F_SETFD)
2691 {
760ac839 2692 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2693 fcntl(fd,F_SETFD,fd >= 3);
2694 }
79072805 2695#endif
fd049845 2696 /* Mark this internal pseudo-handle as clean */
2697 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2698 if (preprocess)
a0d0e21e 2699 IoTYPE(GvIOp(gv)) = '|';
760ac839 2700 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2701 IoTYPE(GvIOp(gv)) = '-';
79072805 2702 else
a0d0e21e 2703 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2704 rsfp = Nullfp;
2705 }
2706 goto fake_eof;
e929a76b 2707 }
de3bb511 2708
8990e307 2709 case KEY_AUTOLOAD:
ed6116ce 2710 case KEY_DESTROY:
79072805
LW		 2711 case KEY_BEGIN:
2712 case KEY_END:
a0d0e21e 2713 if (expect == XSTATE) {
93a17b20
LW		 2714 s = bufptr;
2715 goto really_sub;
79072805
LW		 2716 }
2717 goto just_a_word;
2718
a0d0e21e
LW		 2719 case KEY_CORE:
2720 if (*s == ':' && s[1] == ':') {
2721 s += 2;
748a9306 2722 d = s;
a0d0e21e
LW		 2723 s = scan_word(s, tokenbuf, FALSE, &len);
2724 tmp = keyword(tokenbuf, len);
2725 if (tmp < 0)
2726 tmp = -tmp;
2727 goto reserved_word;
2728 }
2729 goto just_a_word;
2730
463ee0b2
LW		 2731 case KEY_abs:
2732 UNI(OP_ABS);
2733
79072805
LW		 2734 case KEY_alarm:
2735 UNI(OP_ALARM);
2736
2737 case KEY_accept:
a0d0e21e 2738 LOP(OP_ACCEPT,XTERM);
79072805 2739
463ee0b2
LW		 2740 case KEY_and:
2741 OPERATOR(ANDOP);
2742
79072805 2743 case KEY_atan2:
a0d0e21e 2744 LOP(OP_ATAN2,XTERM);
85e6fe83 2745
79072805 2746 case KEY_bind:
a0d0e21e 2747 LOP(OP_BIND,XTERM);
79072805
LW		 2748
2749 case KEY_binmode:
2750 UNI(OP_BINMODE);
2751
2752 case KEY_bless:
a0d0e21e 2753 LOP(OP_BLESS,XTERM);
79072805
LW		 2754
2755 case KEY_chop:
2756 UNI(OP_CHOP);
2757
2758 case KEY_continue:
2759 PREBLOCK(CONTINUE);
2760
2761 case KEY_chdir:
85e6fe83 2762 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2763 UNI(OP_CHDIR);
2764
2765 case KEY_close:
2766 UNI(OP_CLOSE);
2767
2768 case KEY_closedir:
2769 UNI(OP_CLOSEDIR);
2770
2771 case KEY_cmp:
2772 Eop(OP_SCMP);
2773
2774 case KEY_caller:
2775 UNI(OP_CALLER);
2776
2777 case KEY_crypt:
2778#ifdef FCRYPT
de3bb511
LW		 2779 if (!cryptseen++)
2780 init_des();
a687059c 2781#endif
a0d0e21e 2782 LOP(OP_CRYPT,XTERM);
79072805
LW		 2783
2784 case KEY_chmod:
748a9306
LW		 2785 if (dowarn) {
2786 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2787 if (*d != '0' && isDIGIT(*d))
2788 yywarn("chmod: mode argument is missing initial 0");
2789 }
a0d0e21e 2790 LOP(OP_CHMOD,XTERM);
79072805
LW		 2791
2792 case KEY_chown:
a0d0e21e 2793 LOP(OP_CHOWN,XTERM);
79072805
LW		 2794
2795 case KEY_connect:
a0d0e21e 2796 LOP(OP_CONNECT,XTERM);
79072805 2797
463ee0b2
LW		 2798 case KEY_chr:
2799 UNI(OP_CHR);
2800
79072805
LW		 2801 case KEY_cos:
2802 UNI(OP_COS);
2803
2804 case KEY_chroot:
2805 UNI(OP_CHROOT);
2806
2807 case KEY_do:
2808 s = skipspace(s);
2809 if (*s == '{')
a0d0e21e 2810 PRETERMBLOCK(DO);
79072805 2811 if (*s != '\'')
a0d0e21e 2812 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2813 OPERATOR(DO);
79072805
LW		 2814
2815 case KEY_die:
a0d0e21e
LW		 2816 hints |= HINT_BLOCK_SCOPE;
2817 LOP(OP_DIE,XTERM);
79072805
LW		 2818
2819 case KEY_defined:
2820 UNI(OP_DEFINED);
2821
2822 case KEY_delete:
a0d0e21e 2823 UNI(OP_DELETE);
79072805
LW		 2824
2825 case KEY_dbmopen:
a0d0e21e
LW		 2826 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2827 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2828
2829 case KEY_dbmclose:
2830 UNI(OP_DBMCLOSE);
2831
2832 case KEY_dump:
a0d0e21e 2833 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2834 LOOPX(OP_DUMP);
2835
2836 case KEY_else:
2837 PREBLOCK(ELSE);
2838
2839 case KEY_elsif:
2840 yylval.ival = curcop->cop_line;
2841 OPERATOR(ELSIF);
2842
2843 case KEY_eq:
2844 Eop(OP_SEQ);
2845
a0d0e21e
LW		 2846 case KEY_exists:
2847 UNI(OP_EXISTS);
2848
79072805
LW		 2849 case KEY_exit:
2850 UNI(OP_EXIT);
2851
2852 case KEY_eval:
79072805 2853 s = skipspace(s);
a0d0e21e 2854 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2855 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2856
2857 case KEY_eof:
2858 UNI(OP_EOF);
2859
2860 case KEY_exp:
2861 UNI(OP_EXP);
2862
2863 case KEY_each:
2864 UNI(OP_EACH);
2865
2866 case KEY_exec:
2867 set_csh();
a0d0e21e 2868 LOP(OP_EXEC,XREF);
79072805
LW		 2869
2870 case KEY_endhostent:
2871 FUN0(OP_EHOSTENT);
2872
2873 case KEY_endnetent:
2874 FUN0(OP_ENETENT);
2875
2876 case KEY_endservent:
2877 FUN0(OP_ESERVENT);
2878
2879 case KEY_endprotoent:
2880 FUN0(OP_EPROTOENT);
2881
2882 case KEY_endpwent:
2883 FUN0(OP_EPWENT);
2884
2885 case KEY_endgrent:
2886 FUN0(OP_EGRENT);
2887
2888 case KEY_for:
2889 case KEY_foreach:
2890 yylval.ival = curcop->cop_line;
55497cff 2891 s = skipspace(s);
2892 if (isIDFIRST(*s)) {
2893 char *p = s;
2894 if ((bufend - p) >= 3 &&
2895 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2896 p += 2;
2897 p = skipspace(p);
2898 if (isIDFIRST(*p))
2899 croak("Missing $ on loop variable");
2900 }
79072805
LW		 2901 OPERATOR(FOR);
2902
2903 case KEY_formline:
a0d0e21e 2904 LOP(OP_FORMLINE,XTERM);
79072805
LW		 2905
2906 case KEY_fork:
2907 FUN0(OP_FORK);
2908
2909 case KEY_fcntl:
a0d0e21e 2910 LOP(OP_FCNTL,XTERM);
79072805
LW		 2911
2912 case KEY_fileno:
2913 UNI(OP_FILENO);
2914
2915 case KEY_flock:
a0d0e21e 2916 LOP(OP_FLOCK,XTERM);
79072805
LW		 2917
2918 case KEY_gt:
2919 Rop(OP_SGT);
2920
2921 case KEY_ge:
2922 Rop(OP_SGE);
2923
2924 case KEY_grep:
a0d0e21e 2925 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 2926
2927 case KEY_goto:
a0d0e21e 2928 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2929 LOOPX(OP_GOTO);
2930
2931 case KEY_gmtime:
2932 UNI(OP_GMTIME);
2933
2934 case KEY_getc:
2935 UNI(OP_GETC);
2936
2937 case KEY_getppid:
2938 FUN0(OP_GETPPID);
2939
2940 case KEY_getpgrp:
2941 UNI(OP_GETPGRP);
2942
2943 case KEY_getpriority:
a0d0e21e 2944 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 2945
2946 case KEY_getprotobyname:
2947 UNI(OP_GPBYNAME);
2948
2949 case KEY_getprotobynumber:
a0d0e21e 2950 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 2951
2952 case KEY_getprotoent:
2953 FUN0(OP_GPROTOENT);
2954
2955 case KEY_getpwent:
2956 FUN0(OP_GPWENT);
2957
2958 case KEY_getpwnam:
ff68c719 2959 UNI(OP_GPWNAM);
79072805
LW		 2960
2961 case KEY_getpwuid:
ff68c719 2962 UNI(OP_GPWUID);
79072805
LW		 2963
2964 case KEY_getpeername:
2965 UNI(OP_GETPEERNAME);
2966
2967 case KEY_gethostbyname:
2968 UNI(OP_GHBYNAME);
2969
2970 case KEY_gethostbyaddr:
a0d0e21e 2971 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 2972
2973 case KEY_gethostent:
2974 FUN0(OP_GHOSTENT);
2975
2976 case KEY_getnetbyname:
2977 UNI(OP_GNBYNAME);
2978
2979 case KEY_getnetbyaddr:
a0d0e21e 2980 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 2981
2982 case KEY_getnetent:
2983 FUN0(OP_GNETENT);
2984
2985 case KEY_getservbyname:
a0d0e21e 2986 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 2987
2988 case KEY_getservbyport:
a0d0e21e 2989 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 2990
2991 case KEY_getservent:
2992 FUN0(OP_GSERVENT);
2993
2994 case KEY_getsockname:
2995 UNI(OP_GETSOCKNAME);
2996
2997 case KEY_getsockopt:
a0d0e21e 2998 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 2999
3000 case KEY_getgrent:
3001 FUN0(OP_GGRENT);
3002
3003 case KEY_getgrnam:
ff68c719 3004 UNI(OP_GGRNAM);
79072805
LW		 3005
3006 case KEY_getgrgid:
ff68c719 3007 UNI(OP_GGRGID);
79072805
LW		 3008
3009 case KEY_getlogin:
3010 FUN0(OP_GETLOGIN);
3011
93a17b20 3012 case KEY_glob:
a0d0e21e
LW		 3013 set_csh();
3014 LOP(OP_GLOB,XTERM);
93a17b20 3015
79072805
LW		 3016 case KEY_hex:
3017 UNI(OP_HEX);
3018
3019 case KEY_if:
3020 yylval.ival = curcop->cop_line;
71be2cbc 3021 OPERATOR(IF);
79072805
LW		 3022
3023 case KEY_index:
a0d0e21e 3024 LOP(OP_INDEX,XTERM);
79072805
LW		 3025
3026 case KEY_int:
3027 UNI(OP_INT);
3028
3029 case KEY_ioctl:
a0d0e21e 3030 LOP(OP_IOCTL,XTERM);
79072805
LW		 3031
3032 case KEY_join:
a0d0e21e 3033 LOP(OP_JOIN,XTERM);
79072805
LW		 3034
3035 case KEY_keys:
3036 UNI(OP_KEYS);
3037
3038 case KEY_kill:
a0d0e21e 3039 LOP(OP_KILL,XTERM);
79072805
LW		 3040
3041 case KEY_last:
a0d0e21e 3042 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 3043 LOOPX(OP_LAST);
a0d0e21e 3044
79072805
LW		 3045 case KEY_lc:
3046 UNI(OP_LC);
3047
3048 case KEY_lcfirst:
3049 UNI(OP_LCFIRST);
3050
3051 case KEY_local:
3052 OPERATOR(LOCAL);
3053
3054 case KEY_length:
3055 UNI(OP_LENGTH);
3056
3057 case KEY_lt:
3058 Rop(OP_SLT);
3059
3060 case KEY_le:
3061 Rop(OP_SLE);
3062
3063 case KEY_localtime:
3064 UNI(OP_LOCALTIME);
3065
3066 case KEY_log:
3067 UNI(OP_LOG);
3068
3069 case KEY_link:
a0d0e21e 3070 LOP(OP_LINK,XTERM);
79072805
LW		 3071
3072 case KEY_listen:
a0d0e21e 3073 LOP(OP_LISTEN,XTERM);
79072805
LW		 3074
3075 case KEY_lstat:
3076 UNI(OP_LSTAT);
3077
3078 case KEY_m:
3079 s = scan_pat(s);
3080 TERM(sublex_start());
3081
a0d0e21e
LW		 3082 case KEY_map:
3083 LOP(OP_MAPSTART,XREF);
3084
79072805 3085 case KEY_mkdir:
a0d0e21e 3086 LOP(OP_MKDIR,XTERM);
79072805
LW		 3087
3088 case KEY_msgctl:
a0d0e21e 3089 LOP(OP_MSGCTL,XTERM);
79072805
LW		 3090
3091 case KEY_msgget:
a0d0e21e 3092 LOP(OP_MSGGET,XTERM);
79072805
LW		 3093
3094 case KEY_msgrcv:
a0d0e21e 3095 LOP(OP_MSGRCV,XTERM);
79072805
LW		 3096
3097 case KEY_msgsnd:
a0d0e21e 3098 LOP(OP_MSGSND,XTERM);
79072805 3099
93a17b20
LW		 3100 case KEY_my:
3101 in_my = TRUE;
55497cff 3102 OPERATOR(MY);
93a17b20 3103
79072805 3104 case KEY_next:
a0d0e21e 3105 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3106 LOOPX(OP_NEXT);
3107
3108 case KEY_ne:
3109 Eop(OP_SNE);
3110
a0d0e21e
LW		 3111 case KEY_no:
3112 if (expect != XSTATE)
3113 yyerror("\"no\" not allowed in expression");
3114 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3115 s = force_version(s);
a0d0e21e
LW		 3116 yylval.ival = 0;
3117 OPERATOR(USE);
3118
3119 case KEY_not:
3120 OPERATOR(NOTOP);
3121
79072805 3122 case KEY_open:
93a17b20
LW		 3123 s = skipspace(s);
3124 if (isIDFIRST(*s)) {
3125 char *t;
3126 for (d = s; isALNUM(*d); d++) ;
3127 t = skipspace(d);
3128 if (strchr("|&*+-=!?:.", *t))
3129 warn("Precedence problem: open %.*s should be open(%.*s)",
3130 d-s,s, d-s,s);
3131 }
a0d0e21e 3132 LOP(OP_OPEN,XTERM);
79072805 3133
463ee0b2 3134 case KEY_or:
a0d0e21e 3135 yylval.ival = OP_OR;
463ee0b2
LW		 3136 OPERATOR(OROP);
3137
79072805
LW		 3138 case KEY_ord:
3139 UNI(OP_ORD);
3140
3141 case KEY_oct:
3142 UNI(OP_OCT);
3143
3144 case KEY_opendir:
a0d0e21e 3145 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3146
3147 case KEY_print:
3148 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3149 LOP(OP_PRINT,XREF);
79072805
LW		 3150
3151 case KEY_printf:
3152 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3153 LOP(OP_PRTF,XREF);
79072805 3154
c07a80fd 3155 case KEY_prototype:
3156 UNI(OP_PROTOTYPE);
3157
79072805 3158 case KEY_push:
a0d0e21e 3159 LOP(OP_PUSH,XTERM);
79072805
LW		 3160
3161 case KEY_pop:
3162 UNI(OP_POP);
3163
a0d0e21e
LW		 3164 case KEY_pos:
3165 UNI(OP_POS);
3166
79072805 3167 case KEY_pack:
a0d0e21e 3168 LOP(OP_PACK,XTERM);
79072805
LW		 3169
3170 case KEY_package:
a0d0e21e 3171 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3172 OPERATOR(PACKAGE);
3173
3174 case KEY_pipe:
a0d0e21e 3175 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3176
3177 case KEY_q:
3178 s = scan_str(s);
3179 if (!s)
85e6fe83 3180 missingterm((char*)0);
79072805
LW		 3181 yylval.ival = OP_CONST;
3182 TERM(sublex_start());
3183
a0d0e21e
LW		 3184 case KEY_quotemeta:
3185 UNI(OP_QUOTEMETA);
3186
8990e307
LW		 3187 case KEY_qw:
3188 s = scan_str(s);
3189 if (!s)
85e6fe83 3190 missingterm((char*)0);
55497cff 3191 if (dowarn && SvLEN(lex_stuff)) {
3192 d = SvPV_force(lex_stuff, len);
3193 for (; len; --len, ++d) {
3194 if (*d == ',') {
3195 warn("Possible attempt to separate words with commas");
3196 break;
3197 }
3198 if (*d == '#') {
3199 warn("Possible attempt to put comments in qw() list");
3200 break;
3201 }
3202 }
3203 }
8990e307
LW		 3204 force_next(')');
3205 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3206 lex_stuff = Nullsv;
3207 force_next(THING);
3208 force_next(',');
3209 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3210 force_next(THING);
3211 force_next('(');
a0d0e21e
LW		 3212 yylval.ival = OP_SPLIT;
3213 CLINE;
3214 expect = XTERM;
3215 bufptr = s;
3216 last_lop = oldbufptr;
3217 last_lop_op = OP_SPLIT;
3218 return FUNC;
8990e307 3219
79072805
LW		 3220 case KEY_qq:
3221 s = scan_str(s);
3222 if (!s)
85e6fe83 3223 missingterm((char*)0);
a0d0e21e 3224 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3225 if (SvIVX(lex_stuff) == '\'')
3226 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3227 TERM(sublex_start());
3228
3229 case KEY_qx:
3230 s = scan_str(s);
3231 if (!s)
85e6fe83 3232 missingterm((char*)0);
79072805
LW		 3233 yylval.ival = OP_BACKTICK;
3234 set_csh();
3235 TERM(sublex_start());
3236
3237 case KEY_return:
3238 OLDLOP(OP_RETURN);
3239
3240 case KEY_require:
748a9306 3241 *tokenbuf = '\0';
a0d0e21e 3242 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3243 if (isIDFIRST(*tokenbuf))
89bfa8cd 3244 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3245 else if (*s == '<')
a0d0e21e 3246 yyerror("<> should be quotes");
463ee0b2 3247 UNI(OP_REQUIRE);
79072805
LW		 3248
3249 case KEY_reset:
3250 UNI(OP_RESET);
3251
3252 case KEY_redo:
a0d0e21e 3253 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3254 LOOPX(OP_REDO);
3255
3256 case KEY_rename:
a0d0e21e 3257 LOP(OP_RENAME,XTERM);
79072805
LW		 3258
3259 case KEY_rand:
3260 UNI(OP_RAND);
3261
3262 case KEY_rmdir:
3263 UNI(OP_RMDIR);
3264
3265 case KEY_rindex:
a0d0e21e 3266 LOP(OP_RINDEX,XTERM);
79072805
LW		 3267
3268 case KEY_read:
a0d0e21e 3269 LOP(OP_READ,XTERM);
79072805
LW		 3270
3271 case KEY_readdir:
3272 UNI(OP_READDIR);
3273
93a17b20
LW		 3274 case KEY_readline:
3275 set_csh();
3276 UNI(OP_READLINE);
3277
3278 case KEY_readpipe:
3279 set_csh();
3280 UNI(OP_BACKTICK);
3281
79072805
LW		 3282 case KEY_rewinddir:
3283 UNI(OP_REWINDDIR);
3284
3285 case KEY_recv:
a0d0e21e 3286 LOP(OP_RECV,XTERM);
79072805
LW		 3287
3288 case KEY_reverse:
a0d0e21e 3289 LOP(OP_REVERSE,XTERM);
79072805
LW		 3290
3291 case KEY_readlink:
3292 UNI(OP_READLINK);
3293
3294 case KEY_ref:
3295 UNI(OP_REF);
3296
3297 case KEY_s:
3298 s = scan_subst(s);
3299 if (yylval.opval)
3300 TERM(sublex_start());
3301 else
3302 TOKEN(1); /* force error */
3303
a0d0e21e
LW		 3304 case KEY_chomp:
3305 UNI(OP_CHOMP);
3306
79072805
LW		 3307 case KEY_scalar:
3308 UNI(OP_SCALAR);
3309
3310 case KEY_select:
a0d0e21e 3311 LOP(OP_SELECT,XTERM);
79072805
LW		 3312
3313 case KEY_seek:
a0d0e21e 3314 LOP(OP_SEEK,XTERM);
79072805
LW		 3315
3316 case KEY_semctl:
a0d0e21e 3317 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3318
3319 case KEY_semget:
a0d0e21e 3320 LOP(OP_SEMGET,XTERM);
79072805
LW		 3321
3322 case KEY_semop:
a0d0e21e 3323 LOP(OP_SEMOP,XTERM);
79072805
LW		 3324
3325 case KEY_send:
a0d0e21e 3326 LOP(OP_SEND,XTERM);
79072805
LW		 3327
3328 case KEY_setpgrp:
a0d0e21e 3329 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3330
3331 case KEY_setpriority:
a0d0e21e 3332 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3333
3334 case KEY_sethostent:
ff68c719 3335 UNI(OP_SHOSTENT);
79072805
LW		 3336
3337 case KEY_setnetent:
ff68c719 3338 UNI(OP_SNETENT);
79072805
LW		 3339
3340 case KEY_setservent:
ff68c719 3341 UNI(OP_SSERVENT);
79072805
LW		 3342
3343 case KEY_setprotoent:
ff68c719 3344 UNI(OP_SPROTOENT);
79072805
LW		 3345
3346 case KEY_setpwent:
3347 FUN0(OP_SPWENT);
3348
3349 case KEY_setgrent:
3350 FUN0(OP_SGRENT);
3351
3352 case KEY_seekdir:
a0d0e21e 3353 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3354
3355 case KEY_setsockopt:
a0d0e21e 3356 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3357
3358 case KEY_shift:
3359 UNI(OP_SHIFT);
3360
3361 case KEY_shmctl:
a0d0e21e 3362 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3363
3364 case KEY_shmget:
a0d0e21e 3365 LOP(OP_SHMGET,XTERM);
79072805
LW		 3366
3367 case KEY_shmread:
a0d0e21e 3368 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3369
3370 case KEY_shmwrite:
a0d0e21e 3371 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3372
3373 case KEY_shutdown:
a0d0e21e 3374 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3375
3376 case KEY_sin:
3377 UNI(OP_SIN);
3378
3379 case KEY_sleep:
3380 UNI(OP_SLEEP);
3381
3382 case KEY_socket:
a0d0e21e 3383 LOP(OP_SOCKET,XTERM);
79072805
LW		 3384
3385 case KEY_socketpair:
a0d0e21e 3386 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3387
3388 case KEY_sort:
3389 checkcomma(s,tokenbuf,"subroutine name");
3390 s = skipspace(s);
3391 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3392 croak("sort is now a reserved word");
3393 expect = XTERM;
a0d0e21e
LW		 3394 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3395 LOP(OP_SORT,XREF);
79072805
LW		 3396
3397 case KEY_split:
a0d0e21e 3398 LOP(OP_SPLIT,XTERM);
79072805
LW		 3399
3400 case KEY_sprintf:
a0d0e21e 3401 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3402
3403 case KEY_splice:
a0d0e21e 3404 LOP(OP_SPLICE,XTERM);
79072805
LW		 3405
3406 case KEY_sqrt:
3407 UNI(OP_SQRT);
3408
3409 case KEY_srand:
3410 UNI(OP_SRAND);
3411
3412 case KEY_stat:
3413 UNI(OP_STAT);
3414
3415 case KEY_study:
3416 sawstudy++;
3417 UNI(OP_STUDY);
3418
3419 case KEY_substr:
a0d0e21e 3420 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3421
3422 case KEY_format:
3423 case KEY_sub:
93a17b20 3424 really_sub:
79072805 3425 s = skipspace(s);
4633a7c4 3426
463ee0b2
LW		 3427 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3428 char tmpbuf[128];
4633a7c4 3429 expect = XBLOCK;
463ee0b2
LW		 3430 d = scan_word(s, tmpbuf, TRUE, &len);
3431 if (strchr(tmpbuf, ':'))
3432 sv_setpv(subname, tmpbuf);
3433 else {
3434 sv_setsv(subname,curstname);
8990e307 3435 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3436 sv_catpvn(subname,tmpbuf,len);
3437 }
a0d0e21e 3438 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3439 s = skipspace(s);
79072805 3440 }
4633a7c4
LW		 3441 else {
3442 expect = XTERMBLOCK;
79072805 3443 sv_setpv(subname,"?");
4633a7c4
LW		 3444 }
3445
3446 if (tmp == KEY_format) {
3447 s = skipspace(s);
3448 if (*s == '=')
3449 lex_formbrack = lex_brackets + 1;
3450 OPERATOR(FORMAT);
3451 }
79072805 3452
4633a7c4
LW		 3453 /* Look for a prototype */
3454 if (*s == '(') {
68dc0745 3455 char *p;
3456
4633a7c4
LW		 3457 s = scan_str(s);
3458 if (!s) {
3459 if (lex_stuff)
3460 SvREFCNT_dec(lex_stuff);
3461 lex_stuff = Nullsv;
3462 croak("Prototype not terminated");
3463 }
68dc0745 3464 /* strip spaces */
3465 d = SvPVX(lex_stuff);
3466 tmp = 0;
3467 for (p = d; *p; ++p) {
3468 if (!isSPACE(*p))
3469 d[tmp++] = *p;
3470 }
3471 d[tmp] = '\0';
3472 SvCUR(lex_stuff) = tmp;
3473
4633a7c4
LW		 3474 nexttoke++;
3475 nextval[1] = nextval[0];
3476 nexttype[1] = nexttype[0];
3477 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3478 nexttype[0] = THING;
3479 if (nexttoke == 1) {
3480 lex_defer = lex_state;
3481 lex_expect = expect;
3482 lex_state = LEX_KNOWNEXT;
3483 }
3484 lex_stuff = Nullsv;
3485 }
79072805 3486
4633a7c4
LW		 3487 if (*SvPV(subname,na) == '?') {
3488 sv_setpv(subname,"__ANON__");
3489 TOKEN(ANONSUB);
3490 }
3491 PREBLOCK(SUB);
79072805
LW		 3492
3493 case KEY_system:
3494 set_csh();
a0d0e21e 3495 LOP(OP_SYSTEM,XREF);
79072805
LW		 3496
3497 case KEY_symlink:
a0d0e21e 3498 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3499
3500 case KEY_syscall:
a0d0e21e 3501 LOP(OP_SYSCALL,XTERM);
79072805 3502
c07a80fd 3503 case KEY_sysopen:
3504 LOP(OP_SYSOPEN,XTERM);
3505
79072805 3506 case KEY_sysread:
a0d0e21e 3507 LOP(OP_SYSREAD,XTERM);
79072805
LW		 3508
3509 case KEY_syswrite:
a0d0e21e 3510 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3511
3512 case KEY_tr:
3513 s = scan_trans(s);
3514 TERM(sublex_start());
3515
3516 case KEY_tell:
3517 UNI(OP_TELL);
3518
3519 case KEY_telldir:
3520 UNI(OP_TELLDIR);
3521
463ee0b2 3522 case KEY_tie:
a0d0e21e 3523 LOP(OP_TIE,XTERM);
463ee0b2 3524
c07a80fd 3525 case KEY_tied:
3526 UNI(OP_TIED);
3527
79072805
LW		 3528 case KEY_time:
3529 FUN0(OP_TIME);
3530
3531 case KEY_times:
3532 FUN0(OP_TMS);
3533
3534 case KEY_truncate:
a0d0e21e 3535 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3536
3537 case KEY_uc:
3538 UNI(OP_UC);
3539
3540 case KEY_ucfirst:
3541 UNI(OP_UCFIRST);
3542
463ee0b2
LW		 3543 case KEY_untie:
3544 UNI(OP_UNTIE);
3545
79072805
LW		 3546 case KEY_until:
3547 yylval.ival = curcop->cop_line;
71be2cbc 3548 OPERATOR(UNTIL);
79072805
LW		 3549
3550 case KEY_unless:
3551 yylval.ival = curcop->cop_line;
71be2cbc 3552 OPERATOR(UNLESS);
79072805
LW		 3553
3554 case KEY_unlink:
a0d0e21e 3555 LOP(OP_UNLINK,XTERM);
79072805
LW		 3556
3557 case KEY_undef:
3558 UNI(OP_UNDEF);
3559
3560 case KEY_unpack:
a0d0e21e 3561 LOP(OP_UNPACK,XTERM);
79072805
LW		 3562
3563 case KEY_utime:
a0d0e21e 3564 LOP(OP_UTIME,XTERM);
79072805
LW		 3565
3566 case KEY_umask:
748a9306
LW		 3567 if (dowarn) {
3568 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3569 if (*d != '0' && isDIGIT(*d))
3570 yywarn("umask: argument is missing initial 0");
3571 }
79072805
LW		 3572 UNI(OP_UMASK);
3573
3574 case KEY_unshift:
a0d0e21e
LW		 3575 LOP(OP_UNSHIFT,XTERM);
3576
3577 case KEY_use:
3578 if (expect != XSTATE)
3579 yyerror("\"use\" not allowed in expression");
89bfa8cd 3580 s = skipspace(s);
3581 if(isDIGIT(*s)) {
3582 s = force_version(s);
3583 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3584 nextval[nexttoke].opval = Nullop;
3585 force_next(WORD);
3586 }
3587 }
3588 else {
3589 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3590 s = force_version(s);
3591 }
a0d0e21e
LW		 3592 yylval.ival = 1;
3593 OPERATOR(USE);
79072805
LW		 3594
3595 case KEY_values:
3596 UNI(OP_VALUES);
3597
3598 case KEY_vec:
3599 sawvec = TRUE;
a0d0e21e 3600 LOP(OP_VEC,XTERM);
79072805
LW		 3601
3602 case KEY_while:
3603 yylval.ival = curcop->cop_line;
71be2cbc 3604 OPERATOR(WHILE);
79072805
LW		 3605
3606 case KEY_warn:
a0d0e21e
LW		 3607 hints |= HINT_BLOCK_SCOPE;
3608 LOP(OP_WARN,XTERM);
79072805
LW		 3609
3610 case KEY_wait:
3611 FUN0(OP_WAIT);
3612
3613 case KEY_waitpid:
a0d0e21e 3614 LOP(OP_WAITPID,XTERM);
79072805
LW		 3615
3616 case KEY_wantarray:
3617 FUN0(OP_WANTARRAY);
3618
3619 case KEY_write:
85e6fe83 3620 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3621 UNI(OP_ENTERWRITE);
3622
3623 case KEY_x:
3624 if (expect == XOPERATOR)
3625 Mop(OP_REPEAT);
3626 check_uni();
3627 goto just_a_word;
3628
a0d0e21e
LW		 3629 case KEY_xor:
3630 yylval.ival = OP_XOR;
3631 OPERATOR(OROP);
3632
79072805
LW		 3633 case KEY_y:
3634 s = scan_trans(s);
3635 TERM(sublex_start());
3636 }
3637 }
3638}
3639
3640I32
3641keyword(d, len)
3642register char *d;
3643I32 len;
3644{
3645 switch (*d) {
3646 case '_':
3647 if (d[1] == '_') {
a0d0e21e 3648 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
68dc0745 3649 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3650 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
e50aee73 3651 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3652 if (strEQ(d,"__END__")) return KEY___END__;
3653 }
3654 break;
8990e307
LW		 3655 case 'A':
3656 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3657 break;
79072805 3658 case 'a':
463ee0b2
LW		 3659 switch (len) {
3660 case 3:
a0d0e21e
LW		 3661 if (strEQ(d,"and")) return -KEY_and;
3662 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3663 break;
463ee0b2 3664 case 5:
a0d0e21e
LW		 3665 if (strEQ(d,"alarm")) return -KEY_alarm;
3666 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3667 break;
3668 case 6:
a0d0e21e 3669 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3670 break;
3671 }
79072805
LW		 3672 break;
3673 case 'B':
3674 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3675 break;
79072805 3676 case 'b':
a0d0e21e
LW		 3677 if (strEQ(d,"bless")) return -KEY_bless;
3678 if (strEQ(d,"bind")) return -KEY_bind;
3679 if (strEQ(d,"binmode")) return -KEY_binmode;
3680 break;
3681 case 'C':
3682 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3683 break;
3684 case 'c':
3685 switch (len) {
3686 case 3:
a0d0e21e
LW		 3687 if (strEQ(d,"cmp")) return -KEY_cmp;
3688 if (strEQ(d,"chr")) return -KEY_chr;
3689 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3690 break;
3691 case 4:
3692 if (strEQ(d,"chop")) return KEY_chop;
3693 break;
3694 case 5:
a0d0e21e
LW		 3695 if (strEQ(d,"close")) return -KEY_close;
3696 if (strEQ(d,"chdir")) return -KEY_chdir;
3697 if (strEQ(d,"chomp")) return KEY_chomp;
3698 if (strEQ(d,"chmod")) return -KEY_chmod;
3699 if (strEQ(d,"chown")) return -KEY_chown;
3700 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3701 break;
3702 case 6:
a0d0e21e
LW		 3703 if (strEQ(d,"chroot")) return -KEY_chroot;
3704 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3705 break;
3706 case 7:
a0d0e21e 3707 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3708 break;
3709 case 8:
a0d0e21e
LW		 3710 if (strEQ(d,"closedir")) return -KEY_closedir;
3711 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3712 break;
3713 }
3714 break;
ed6116ce
LW		 3715 case 'D':
3716 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3717 break;
79072805
LW		 3718 case 'd':
3719 switch (len) {
3720 case 2:
3721 if (strEQ(d,"do")) return KEY_do;
3722 break;
3723 case 3:
a0d0e21e 3724 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3725 break;
3726 case 4:
a0d0e21e 3727 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3728 break;
3729 case 6:
3730 if (strEQ(d,"delete")) return KEY_delete;
3731 break;
3732 case 7:
3733 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3734 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3735 break;
3736 case 8:
a0d0e21e 3737 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3738 break;
3739 }
3740 break;
3741 case 'E':
a0d0e21e 3742 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3743 if (strEQ(d,"END")) return KEY_END;
3744 break;
3745 case 'e':
3746 switch (len) {
3747 case 2:
a0d0e21e 3748 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3749 break;
3750 case 3:
a0d0e21e
LW		 3751 if (strEQ(d,"eof")) return -KEY_eof;
3752 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3753 break;
3754 case 4:
3755 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3756 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3757 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3758 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3759 if (strEQ(d,"each")) return KEY_each;
3760 break;
3761 case 5:
3762 if (strEQ(d,"elsif")) return KEY_elsif;
3763 break;
a0d0e21e
LW		 3764 case 6:
3765 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3766 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3767 break;
79072805 3768 case 8:
a0d0e21e
LW		 3769 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3770 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3771 break;
3772 case 9:
a0d0e21e 3773 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3774 break;
3775 case 10:
a0d0e21e
LW		 3776 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3777 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3778 break;
3779 case 11:
a0d0e21e 3780 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3781 break;
a687059c 3782 }
a687059c 3783 break;
79072805
LW		 3784 case 'f':
3785 switch (len) {
3786 case 3:
3787 if (strEQ(d,"for")) return KEY_for;
3788 break;
3789 case 4:
a0d0e21e 3790 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3791 break;
3792 case 5:
a0d0e21e
LW		 3793 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3794 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3795 break;
3796 case 6:
3797 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3798 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3799 break;
3800 case 7:
3801 if (strEQ(d,"foreach")) return KEY_foreach;
3802 break;
3803 case 8:
a0d0e21e 3804 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3805 break;
378cc40b 3806 }
a687059c 3807 break;
79072805
LW		 3808 case 'G':
3809 if (len == 2) {
a0d0e21e
LW		 3810 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3811 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3812 }
a687059c 3813 break;
79072805 3814 case 'g':
a687059c
LW		 3815 if (strnEQ(d,"get",3)) {
3816 d += 3;
3817 if (*d == 'p') {
79072805
LW		 3818 switch (len) {
3819 case 7:
a0d0e21e
LW		 3820 if (strEQ(d,"ppid")) return -KEY_getppid;
3821 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3822 break;
3823 case 8:
a0d0e21e
LW		 3824 if (strEQ(d,"pwent")) return -KEY_getpwent;
3825 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3826 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3827 break;
3828 case 11:
a0d0e21e
LW		 3829 if (strEQ(d,"peername")) return -KEY_getpeername;
3830 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3831 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3832 break;
3833 case 14:
a0d0e21e 3834 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3835 break;
3836 case 16:
a0d0e21e 3837 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3838 break;
3839 }
a687059c
LW		 3840 }
3841 else if (*d == 'h') {
a0d0e21e
LW		 3842 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3843 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3844 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3845 }
3846 else if (*d == 'n') {
a0d0e21e
LW		 3847 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3848 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3849 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3850 }
3851 else if (*d == 's') {
a0d0e21e
LW		 3852 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3853 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3854 if (strEQ(d,"servent")) return -KEY_getservent;
3855 if (strEQ(d,"sockname")) return -KEY_getsockname;
3856 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3857 }
3858 else if (*d == 'g') {
a0d0e21e
LW		 3859 if (strEQ(d,"grent")) return -KEY_getgrent;
3860 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3861 if (strEQ(d,"grgid")) return -KEY_getgrgid;
a687059c
LW		 3862 }
3863 else if (*d == 'l') {
a0d0e21e 3864 if (strEQ(d,"login")) return -KEY_getlogin;
a687059c 3865 }
a0d0e21e 3866 else if (strEQ(d,"c")) return -KEY_getc;
79072805 3867 break;
a687059c 3868 }
79072805
LW		 3869 switch (len) {
3870 case 2:
a0d0e21e
LW		 3871 if (strEQ(d,"gt")) return -KEY_gt;
3872 if (strEQ(d,"ge")) return -KEY_ge;
79072805
LW		 3873 break;
3874 case 4:
3875 if (strEQ(d,"grep")) return KEY_grep;
3876 if (strEQ(d,"goto")) return KEY_goto;
a0d0e21e 3877 if (strEQ(d,"glob")) return -KEY_glob;
79072805
LW		 3878 break;
3879 case 6:
a0d0e21e 3880 if (strEQ(d,"gmtime")) return -KEY_gmtime;
79072805 3881 break;
378cc40b 3882 }
a687059c 3883 break;