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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) {
1c9c84df
CS		 625 SV *sv = q(lex_stuff);
626 STRLEN len;
627 char *p = SvPV(sv, len);
628 yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len));
629 SvREFCNT_dec(sv);
79072805
LW		 630 lex_stuff = Nullsv;
631 return THING;
632 }
633
55497cff 634 sublex_info.super_state = lex_state;
635 sublex_info.sub_inwhat = op_type;
636 sublex_info.sub_op = lex_op;
637 lex_state = LEX_INTERPPUSH;
638
639 expect = XTERM;
640 if (lex_op) {
641 yylval.opval = lex_op;
642 lex_op = Nullop;
643 return PMFUNC;
644 }
645 else
646 return FUNC;
647}
648
649static I32
650sublex_push()
651{
79072805 652 push_scope();
55497cff 653
654 lex_state = sublex_info.super_state;
655 SAVEI32(lex_dojoin);
656 SAVEI32(lex_brackets);
657 SAVEI32(lex_fakebrack);
658 SAVEI32(lex_casemods);
659 SAVEI32(lex_starts);
660 SAVEI32(lex_state);
a0d0e21e 661 SAVESPTR(lex_inpat);
55497cff 662 SAVEI32(lex_inwhat);
663 SAVEI16(curcop->cop_line);
85e6fe83
LW		 664 SAVEPPTR(bufptr);
665 SAVEPPTR(oldbufptr);
666 SAVEPPTR(oldoldbufptr);
fd049845 667 SAVEPPTR(linestart);
79072805 668 SAVESPTR(linestr);
85e6fe83 669 SAVEPPTR(lex_brackstack);
a0d0e21e 670 SAVEPPTR(lex_casestack);
79072805
LW		 671
672 linestr = lex_stuff;
673 lex_stuff = Nullsv;
674
fd049845 675 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 676 bufend += SvCUR(linestr);
8990e307 677 SAVEFREESV(linestr);
79072805
LW		 678
679 lex_dojoin = FALSE;
680 lex_brackets = 0;
681 lex_fakebrack = 0;
8990e307 682 New(899, lex_brackstack, 120, char);
a0d0e21e 683 New(899, lex_casestack, 12, char);
8990e307 684 SAVEFREEPV(lex_brackstack);
a0d0e21e 685 SAVEFREEPV(lex_casestack);
79072805 686 lex_casemods = 0;
a0d0e21e 687 *lex_casestack = '\0';
79072805
LW		 688 lex_starts = 0;
689 lex_state = LEX_INTERPCONCAT;
690 curcop->cop_line = multi_start;
691
55497cff 692 lex_inwhat = sublex_info.sub_inwhat;
693 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
694 lex_inpat = sublex_info.sub_op;
79072805 695 else
55497cff 696 lex_inpat = Nullop;
79072805 697
55497cff 698 return '(';
79072805
LW		 699}
700
8990e307 701static I32
79072805
LW		 702sublex_done()
703{
704 if (!lex_starts++) {
705 expect = XOPERATOR;
93a17b20 706 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 707 return THING;
708 }
709
710 if (lex_casemods) { /* oops, we've got some unbalanced parens */
711 lex_state = LEX_INTERPCASEMOD;
712 return yylex();
713 }
714
79072805
LW		 715 /* Is there a right-hand side to take care of? */
716 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
717 linestr = lex_repl;
718 lex_inpat = 0;
fd049845 719 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 720 bufend += SvCUR(linestr);
8990e307 721 SAVEFREESV(linestr);
79072805
LW		 722 lex_dojoin = FALSE;
723 lex_brackets = 0;
724 lex_fakebrack = 0;
725 lex_casemods = 0;
a0d0e21e 726 *lex_casestack = '\0';
79072805
LW		 727 lex_starts = 0;
728 if (SvCOMPILED(lex_repl)) {
729 lex_state = LEX_INTERPNORMAL;
730 lex_starts++;
731 }
732 else
733 lex_state = LEX_INTERPCONCAT;
734 lex_repl = Nullsv;
735 return ',';
ffed7fef
LW		 736 }
737 else {
79072805 738 pop_scope();
463ee0b2 739 bufend = SvPVX(linestr);
79072805
LW		 740 bufend += SvCUR(linestr);
741 expect = XOPERATOR;
742 return ')';
ffed7fef
LW		 743 }
744}
745
8990e307 746static char *
79072805
LW		 747scan_const(start)
748char *start;
749{
750 register char *send = bufend;
751 SV *sv = NEWSV(93, send - start);
752 register char *s = start;
463ee0b2 753 register char *d = SvPVX(sv);
79072805
LW		 754 bool dorange = FALSE;
755 I32 len;
756 char *leave =
757 lex_inpat
748a9306 758 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 759 : (lex_inwhat & OP_TRANS)
760 ? ""
761 : "";
762
763 while (s < send || dorange) {
764 if (lex_inwhat == OP_TRANS) {
765 if (dorange) {
766 I32 i;
767 I32 max;
463ee0b2 768 i = d - SvPVX(sv);
79072805 769 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 770 d = SvPVX(sv) + i;
79072805 771 d -= 2;
91b7def8 772 max = (U8)d[1];
773 for (i = (U8)*d; i <= max; i++)
79072805
LW		 774 *d++ = i;
775 dorange = FALSE;
776 continue;
777 }
778 else if (*s == '-' && s+1 < send && s != start) {
779 dorange = TRUE;
780 s++;
781 }
782 }
748a9306
LW		 783 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
784 while (s < send && *s != ')')
785 *d++ = *s++;
786 }
787 else if (*s == '#' && lex_inpat &&
788 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
789 while (s+1 < send && *s != '\n')
790 *d++ = *s++;
791 }
a0d0e21e 792 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 793 break;
794 else if (*s == '$') {
795 if (!lex_inpat) /* not a regexp, so $ must be var */
796 break;
a0d0e21e 797 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 798 break; /* in regexp, $ might be tail anchor */
799 }
800 if (*s == '\\' && s+1 < send) {
801 s++;
93a17b20 802 if (*s && strchr(leave, *s)) {
79072805
LW		 803 *d++ = '\\';
804 *d++ = *s++;
805 continue;
806 }
807 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 808 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 809 {
a0d0e21e
LW		 810 if (dowarn)
811 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 812 *--s = '$';
813 break;
814 }
a0d0e21e 815 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 816 --s;
817 break;
818 }
819 switch (*s) {
820 case '-':
821 if (lex_inwhat == OP_TRANS) {
822 *d++ = *s++;
823 continue;
824 }
825 /* FALL THROUGH */
826 default:
827 *d++ = *s++;
828 continue;
829 case '0': case '1': case '2': case '3':
830 case '4': case '5': case '6': case '7':
831 *d++ = scan_oct(s, 3, &len);
832 s += len;
833 continue;
834 case 'x':
835 *d++ = scan_hex(++s, 2, &len);
836 s += len;
837 continue;
838 case 'c':
839 s++;
bbce6d69 840 len = *s++;
841 *d++ = toCTRL(len);
79072805
LW		 842 continue;
843 case 'b':
844 *d++ = '\b';
845 break;
846 case 'n':
847 *d++ = '\n';
848 break;
849 case 'r':
850 *d++ = '\r';
851 break;
852 case 'f':
853 *d++ = '\f';
854 break;
855 case 't':
856 *d++ = '\t';
857 break;
858 case 'e':
859 *d++ = '\033';
860 break;
861 case 'a':
862 *d++ = '\007';
863 break;
864 }
865 s++;
866 continue;
867 }
868 *d++ = *s++;
869 }
870 *d = '\0';
463ee0b2 871 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 872 SvPOK_on(sv);
873
874 if (SvCUR(sv) + 5 < SvLEN(sv)) {
875 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 876 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 877 }
878 if (s > bufptr)
879 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
880 else
8990e307 881 SvREFCNT_dec(sv);
79072805
LW		 882 return s;
883}
884
885/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 886static int
79072805
LW		 887intuit_more(s)
888register char *s;
889{
890 if (lex_brackets)
891 return TRUE;
892 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
893 return TRUE;
894 if (*s != '{' && *s != '[')
895 return FALSE;
896 if (!lex_inpat)
897 return TRUE;
898
899 /* In a pattern, so maybe we have {n,m}. */
900 if (*s == '{') {
901 s++;
902 if (!isDIGIT(*s))
903 return TRUE;
904 while (isDIGIT(*s))
905 s++;
906 if (*s == ',')
907 s++;
908 while (isDIGIT(*s))
909 s++;
910 if (*s == '}')
911 return FALSE;
912 return TRUE;
913
914 }
915
916 /* On the other hand, maybe we have a character class */
917
918 s++;
919 if (*s == ']' || *s == '^')
920 return FALSE;
921 else {
922 int weight = 2; /* let's weigh the evidence */
923 char seen[256];
924 unsigned char un_char = 0, last_un_char;
93a17b20 925 char *send = strchr(s,']');
79072805
LW		 926 char tmpbuf[512];
927
928 if (!send) /* has to be an expression */
929 return TRUE;
930
931 Zero(seen,256,char);
932 if (*s == '$')
933 weight -= 3;
934 else if (isDIGIT(*s)) {
935 if (s[1] != ']') {
936 if (isDIGIT(s[1]) && s[2] == ']')
937 weight -= 10;
938 }
939 else
940 weight -= 100;
941 }
942 for (; s < send; s++) {
943 last_un_char = un_char;
944 un_char = (unsigned char)*s;
945 switch (*s) {
946 case '@':
947 case '&':
948 case '$':
949 weight -= seen[un_char] * 10;
950 if (isALNUM(s[1])) {
951 scan_ident(s,send,tmpbuf,FALSE);
a0d0e21e 952 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 953 weight -= 100;
954 else
955 weight -= 10;
956 }
957 else if (*s == '$' && s[1] &&
93a17b20
LW		 958 strchr("[#!%*<>()-=",s[1])) {
959 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 960 weight -= 10;
961 else
962 weight -= 1;
963 }
964 break;
965 case '\\':
966 un_char = 254;
967 if (s[1]) {
93a17b20 968 if (strchr("wds]",s[1]))
79072805
LW		 969 weight += 100;
970 else if (seen['\''] || seen['"'])
971 weight += 1;
93a17b20 972 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 973 weight += 40;
974 else if (isDIGIT(s[1])) {
975 weight += 40;
976 while (s[1] && isDIGIT(s[1]))
977 s++;
978 }
979 }
980 else
981 weight += 100;
982 break;
983 case '-':
984 if (s[1] == '\\')
985 weight += 50;
93a17b20 986 if (strchr("aA01! ",last_un_char))
79072805 987 weight += 30;
93a17b20 988 if (strchr("zZ79~",s[1]))
79072805
LW		 989 weight += 30;
990 break;
991 default:
93a17b20 992 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 993 isALPHA(*s) && s[1] && isALPHA(s[1])) {
994 char *d = tmpbuf;
995 while (isALPHA(*s))
996 *d++ = *s++;
997 *d = '\0';
998 if (keyword(tmpbuf, d - tmpbuf))
999 weight -= 150;
1000 }
1001 if (un_char == last_un_char + 1)
1002 weight += 5;
1003 weight -= seen[un_char];
1004 break;
1005 }
1006 seen[un_char]++;
1007 }
1008 if (weight >= 0) /* probably a character class */
1009 return FALSE;
1010 }
1011
1012 return TRUE;
1013}
ffed7fef 1014
a0d0e21e
LW		 1015static int
1016intuit_method(start,gv)
1017char *start;
1018GV *gv;
1019{
1020 char *s = start + (*start == '$');
1021 char tmpbuf[1024];
1022 STRLEN len;
1023 GV* indirgv;
1024
1025 if (gv) {
1026 if (GvIO(gv))
1027 return 0;
8ebc5c01 1028 if (!GvCVu(gv))
a0d0e21e
LW		 1029 gv = 0;
1030 }
1031 s = scan_word(s, tmpbuf, TRUE, &len);
1032 if (*start == '$') {
1033 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1034 return 0;
1035 s = skipspace(s);
1036 bufptr = start;
1037 expect = XREF;
1038 return *s == '(' ? FUNCMETH : METHOD;
1039 }
1040 if (!keyword(tmpbuf, len)) {
1041 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
8ebc5c01 1042 if (indirgv && GvCVu(indirgv))
a0d0e21e
LW		 1043 return 0;
1044 /* filehandle or package name makes it a method */
89bfa8cd 1045 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1046 s = skipspace(s);
55497cff 1047 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1048 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1049 nextval[nexttoke].opval =
1050 (OP*)newSVOP(OP_CONST, 0,
1051 newSVpv(tmpbuf,0));
1052 nextval[nexttoke].opval->op_private =
1053 OPpCONST_BARE;
1054 expect = XTERM;
1055 force_next(WORD);
1056 bufptr = s;
1057 return *s == '(' ? FUNCMETH : METHOD;
1058 }
1059 }
1060 return 0;
1061}
1062
1063static char*
1064incl_perldb()
1065{
1066 if (perldb) {
1067 char *pdb = getenv("PERL5DB");
1068
1069 if (pdb)
1070 return pdb;
1071 return "BEGIN { require 'perl5db.pl' }";
1072 }
1073 return "";
1074}
1075
1076
16d20bd9
AD		 1077/* Encoded script support. filter_add() effectively inserts a
1078 * 'pre-processing' function into the current source input stream.
1079 * Note that the filter function only applies to the current source file
1080 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1081 *
1082 * The datasv parameter (which may be NULL) can be used to pass
1083 * private data to this instance of the filter. The filter function
1084 * can recover the SV using the FILTER_DATA macro and use it to
1085 * store private buffers and state information.
1086 *
1087 * The supplied datasv parameter is upgraded to a PVIO type
1088 * and the IoDIRP field is used to store the function pointer.
1089 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1090 * private use must be set using malloc'd pointers.
1091 */
1092static int filter_debug = 0;
1093
1094SV *
1095filter_add(funcp, datasv)
1096 filter_t funcp;
1097 SV *datasv;
1098{
1099 if (!funcp){ /* temporary handy debugging hack to be deleted */
1100 filter_debug = atoi((char*)datasv);
1101 return NULL;
1102 }
1103 if (!rsfp_filters)
1104 rsfp_filters = newAV();
1105 if (!datasv)
1106 datasv = newSV(0);
1107 if (!SvUPGRADE(datasv, SVt_PVIO))
1108 die("Can't upgrade filter_add data to SVt_PVIO");
1109 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1110 if (filter_debug)
ff0cee69 1111 warn("filter_add func %p (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1112 av_unshift(rsfp_filters, 1);
1113 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1114 return(datasv);
1115}
1116
1117
1118/* Delete most recently added instance of this filter function. */
a0d0e21e 1119void
16d20bd9
AD		 1120filter_del(funcp)
1121 filter_t funcp;
1122{
1123 if (filter_debug)
ff0cee69 1124 warn("filter_del func %p", funcp);
16d20bd9
AD		 1125 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1126 return;
1127 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1128 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1129 /* sv_free(av_pop(rsfp_filters)); */
1130 sv_free(av_shift(rsfp_filters));
1131
16d20bd9
AD		 1132 return;
1133 }
1134 /* we need to search for the correct entry and clear it */
1135 die("filter_del can only delete in reverse order (currently)");
1136}
1137
1138
1139/* Invoke the n'th filter function for the current rsfp. */
1140I32
1141filter_read(idx, buf_sv, maxlen)
1142 int idx;
1143 SV *buf_sv;
1144 int maxlen; /* 0 = read one text line */
a0d0e21e 1145{
16d20bd9
AD		 1146 filter_t funcp;
1147 SV *datasv = NULL;
e50aee73 1148
16d20bd9
AD		 1149 if (!rsfp_filters)
1150 return -1;
1151 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1152 /* Provide a default input filter to make life easy. */
1153 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1154 if (filter_debug)
1155 warn("filter_read %d: from rsfp\n", idx);
1156 if (maxlen) {
1157 /* Want a block */
1158 int len ;
1159 int old_len = SvCUR(buf_sv) ;
1160
1161 /* ensure buf_sv is large enough */
1162 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1163 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1164 if (PerlIO_error(rsfp))
37120919
AD		 1165 return -1; /* error */
1166 else
1167 return 0 ; /* end of file */
1168 }
16d20bd9
AD		 1169 SvCUR_set(buf_sv, old_len + len) ;
1170 } else {
1171 /* Want a line */
37120919 1172 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1173 if (PerlIO_error(rsfp))
37120919
AD		 1174 return -1; /* error */
1175 else
1176 return 0 ; /* end of file */
1177 }
16d20bd9
AD		 1178 }
1179 return SvCUR(buf_sv);
1180 }
1181 /* Skip this filter slot if filter has been deleted */
1182 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1183 if (filter_debug)
1184 warn("filter_read %d: skipped (filter deleted)\n", idx);
1185 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1186 }
1187 /* Get function pointer hidden within datasv */
1188 funcp = (filter_t)IoDIRP(datasv);
1189 if (filter_debug)
ff0cee69 1190 warn("filter_read %d: via function %p (%s)\n",
16d20bd9
AD		 1191 idx, funcp, SvPV(datasv,na));
1192 /* Call function. The function is expected to */
1193 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1194 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1195 return (*funcp)(idx, buf_sv, maxlen);
1196}
1197
1198static char *
fd049845 1199filter_gets(sv,fp, append)
16d20bd9 1200register SV *sv;
760ac839 1201register PerlIO *fp;
fd049845 1202STRLEN append;
16d20bd9
AD		 1203{
1204 if (rsfp_filters) {
1205
55497cff 1206 if (!append)
1207 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1208 if (FILTER_READ(0, sv, 0) > 0)
1209 return ( SvPVX(sv) ) ;
1210 else
1211 return Nullch ;
1212 }
1213 else
fd049845 1214 return (sv_gets(sv, fp, append));
16d20bd9 1215
a0d0e21e
LW		 1216}
1217
1218
748a9306
LW		 1219#ifdef DEBUGGING
1220 static char* exp_name[] =
a0d0e21e 1221 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1222#endif
463ee0b2 1223
71be2cbc 1224EXT int yychar; /* last token */
463ee0b2 1225
2f3197b3 1226int
378cc40b
LW		 1227yylex()
1228{
79072805 1229 register char *s;
378cc40b 1230 register char *d;
79072805 1231 register I32 tmp;
463ee0b2 1232 STRLEN len;
a687059c 1233
bbce6d69 1234 if (pending_ident) {
1235 char pit = pending_ident;
1236 pending_ident = 0;
1237
1238 if (in_my) {
1239 if (strchr(tokenbuf,':'))
1240 croak(no_myglob,tokenbuf);
1241 yylval.opval = newOP(OP_PADANY, 0);
1242 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1243 return PRIVATEREF;
1244 }
1245
1246 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1247 if (last_lop_op == OP_SORT &&
1248 tokenbuf[0] == '$' &&
1249 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1250 && !tokenbuf[2])
1251 {
1252 for (d = in_eval ? oldoldbufptr : linestart;
1253 d < bufend && *d != '\n';
1254 d++)
1255 {
1256 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1257 croak("Can't use \"my %s\" in sort comparison",
1258 tokenbuf);
1259 }
1260 }
1261 }
1262
1263 yylval.opval = newOP(OP_PADANY, 0);
1264 yylval.opval->op_targ = tmp;
1265 return PRIVATEREF;
1266 }
1267
1268 /* Force them to make up their mind on "@foo". */
1269 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1270 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
36477c24 1271 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
bbce6d69 1272 char tmpbuf[1024];
9607fc9c 1273 sprintf(tmpbuf, "In string, %s now must be written as \\%s",
1274 tokenbuf, tokenbuf);
bbce6d69 1275 yyerror(tmpbuf);
1276 }
1277 }
1278
1279 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1280 yylval.opval->op_private = OPpCONST_ENTERED;
1281 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1282 ((tokenbuf[0] == '$') ? SVt_PV
1283 : (tokenbuf[0] == '@') ? SVt_PVAV
1284 : SVt_PVHV));
1285 return WORD;
1286 }
1287
79072805
LW		 1288 switch (lex_state) {
1289#ifdef COMMENTARY
1290 case LEX_NORMAL: /* Some compilers will produce faster */
1291 case LEX_INTERPNORMAL: /* code if we comment these out. */
1292 break;
1293#endif
1294
1295 case LEX_KNOWNEXT:
1296 nexttoke--;
1297 yylval = nextval[nexttoke];
463ee0b2 1298 if (!nexttoke) {
79072805 1299 lex_state = lex_defer;
463ee0b2 1300 expect = lex_expect;
a0d0e21e 1301 lex_defer = LEX_NORMAL;
463ee0b2 1302 }
79072805
LW		 1303 return(nexttype[nexttoke]);
1304
1305 case LEX_INTERPCASEMOD:
1306#ifdef DEBUGGING
1307 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1308 croak("panic: INTERPCASEMOD");
79072805
LW		 1309#endif
1310 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1311 char oldmod;
79072805 1312 if (lex_casemods) {
a0d0e21e
LW		 1313 oldmod = lex_casestack[--lex_casemods];
1314 lex_casestack[lex_casemods] = '\0';
1315 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1316 bufptr += 2;
1317 lex_state = LEX_INTERPCONCAT;
1318 }
79072805
LW		 1319 return ')';
1320 }
a0d0e21e
LW		 1321 if (bufptr != bufend)
1322 bufptr += 2;
1323 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1324 return yylex();
1325 }
1326 else {
1327 s = bufptr + 1;
1328 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1329 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1330 if (strchr("LU", *s) &&
1331 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1332 {
1333 lex_casestack[--lex_casemods] = '\0';
1334 return ')';
1335 }
1336 if (lex_casemods > 10) {
89bfa8cd 1337 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1338 if (newlb != lex_casestack) {
1339 SAVEFREEPV(newlb);
1340 lex_casestack = newlb;
1341 }
1342 }
1343 lex_casestack[lex_casemods++] = *s;
1344 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1345 lex_state = LEX_INTERPCONCAT;
1346 nextval[nexttoke].ival = 0;
1347 force_next('(');
1348 if (*s == 'l')
1349 nextval[nexttoke].ival = OP_LCFIRST;
1350 else if (*s == 'u')
1351 nextval[nexttoke].ival = OP_UCFIRST;
1352 else if (*s == 'L')
1353 nextval[nexttoke].ival = OP_LC;
1354 else if (*s == 'U')
1355 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1356 else if (*s == 'Q')
1357 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1358 else
463ee0b2 1359 croak("panic: yylex");
79072805
LW		 1360 bufptr = s + 1;
1361 force_next(FUNC);
1362 if (lex_starts) {
1363 s = bufptr;
463ee0b2 1364 lex_starts = 0;
79072805
LW		 1365 Aop(OP_CONCAT);
1366 }
1367 else
1368 return yylex();
1369 }
1370
55497cff 1371 case LEX_INTERPPUSH:
1372 return sublex_push();
1373
79072805
LW		 1374 case LEX_INTERPSTART:
1375 if (bufptr == bufend)
1376 return sublex_done();
1377 expect = XTERM;
1378 lex_dojoin = (*bufptr == '@');
1379 lex_state = LEX_INTERPNORMAL;
1380 if (lex_dojoin) {
1381 nextval[nexttoke].ival = 0;
1382 force_next(',');
a0d0e21e 1383 force_ident("\"", '$');
79072805
LW		 1384 nextval[nexttoke].ival = 0;
1385 force_next('$');
1386 nextval[nexttoke].ival = 0;
1387 force_next('(');
1388 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1389 force_next(FUNC);
1390 }
1391 if (lex_starts++) {
1392 s = bufptr;
1393 Aop(OP_CONCAT);
1394 }
68dc0745 1395 return yylex();
79072805
LW		 1396
1397 case LEX_INTERPENDMAYBE:
1398 if (intuit_more(bufptr)) {
1399 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1400 break;
1401 }
1402 /* FALL THROUGH */
1403
1404 case LEX_INTERPEND:
1405 if (lex_dojoin) {
1406 lex_dojoin = FALSE;
1407 lex_state = LEX_INTERPCONCAT;
1408 return ')';
1409 }
1410 /* FALLTHROUGH */
1411 case LEX_INTERPCONCAT:
1412#ifdef DEBUGGING
1413 if (lex_brackets)
463ee0b2 1414 croak("panic: INTERPCONCAT");
79072805
LW		 1415#endif
1416 if (bufptr == bufend)
1417 return sublex_done();
1418
ed6116ce 1419 if (SvIVX(linestr) == '\'') {
79072805
LW		 1420 SV *sv = newSVsv(linestr);
1421 if (!lex_inpat)
1422 sv = q(sv);
1423 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1424 s = bufend;
1425 }
1426 else {
1427 s = scan_const(bufptr);
1428 if (*s == '\\')
1429 lex_state = LEX_INTERPCASEMOD;
1430 else
1431 lex_state = LEX_INTERPSTART;
1432 }
1433
1434 if (s != bufptr) {
1435 nextval[nexttoke] = yylval;
463ee0b2 1436 expect = XTERM;
79072805
LW		 1437 force_next(THING);
1438 if (lex_starts++)
1439 Aop(OP_CONCAT);
1440 else {
1441 bufptr = s;
1442 return yylex();
1443 }
1444 }
1445
1446 return yylex();
a0d0e21e
LW		 1447 case LEX_FORMLINE:
1448 lex_state = LEX_NORMAL;
1449 s = scan_formline(bufptr);
1450 if (!lex_formbrack)
1451 goto rightbracket;
1452 OPERATOR(';');
79072805
LW		 1453 }
1454
1455 s = bufptr;
a687059c
LW		 1456 oldoldbufptr = oldbufptr;
1457 oldbufptr = s;
79072805 1458 DEBUG_p( {
760ac839 1459 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1460 } )
463ee0b2
LW		 1461
1462 retry:
378cc40b
LW		 1463 switch (*s) {
1464 default:
54310121 1465 croak("Unrecognized character \\%03o", *s & 255);
e929a76b
LW		 1466 case 4:
1467 case 26:
1468 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1469 case 0:
463ee0b2 1470 if (!rsfp) {
55497cff 1471 last_uni = 0;
1472 last_lop = 0;
463ee0b2
LW		 1473 if (lex_brackets)
1474 yyerror("Missing right bracket");
79072805 1475 TOKEN(0);
463ee0b2 1476 }
a687059c
LW		 1477 if (s++ < bufend)
1478 goto retry; /* ignore stray nulls */
2f3197b3 1479 last_uni = 0;
79072805 1480 last_lop = 0;
a0d0e21e 1481 if (!in_eval && !preambled) {
79072805 1482 preambled = TRUE;
a0d0e21e 1483 sv_setpv(linestr,incl_perldb());
91b7def8 1484 if (SvCUR(linestr))
1485 sv_catpv(linestr,";");
1486 if (preambleav){
1487 while(AvFILL(preambleav) >= 0) {
1488 SV *tmpsv = av_shift(preambleav);
1489 sv_catsv(linestr, tmpsv);
1490 sv_catpv(linestr, ";");
1491 sv_free(tmpsv);
1492 }
1493 sv_free((SV*)preambleav);
1494 preambleav = NULL;
1495 }
79072805
LW		 1496 if (minus_n || minus_p) {
1497 sv_catpv(linestr, "LINE: while (<>) {");
1498 if (minus_l)
a0d0e21e 1499 sv_catpv(linestr,"chomp;");
8fd239a7
CS		 1500 if (minus_a) {
1501 GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV);
1502 if (gv)
1503 GvIMPORTED_AV_on(gv);
1504 if (minus_F) {
54310121 1505 char *tmpbuf1;
1506 New(201, tmpbuf1, strlen(splitstr) * 2 + 20, char);
1507 if (strchr("/'\"", *splitstr)
1508 && strchr(splitstr + 1, *splitstr))
1509 sprintf(tmpbuf1, "@F=split(%s);", splitstr);
1510 else {
1511 char delim;
1512 s = "'~#\200\1'"; /* surely one char is unused...*/
1513 while (s[1] && strchr(splitstr, *s)) s++;
1514 delim = *s;
1515 sprintf(tmpbuf1, "@F=split(%s%c",
1516 "q" + (delim == '\''), delim);
1517 d = tmpbuf1 + strlen(tmpbuf1);
1518 for (s = splitstr; *s; ) {
1519 if (*s == '\\')
1520 *d++ = '\\';
1521 *d++ = *s++;
1522 }
1523 sprintf(d, "%c);", delim);
1524 }
8fd239a7 1525 sv_catpv(linestr,tmpbuf1);
54310121 1526 Safefree(tmpbuf1);
2304df62
AD		 1527 }
1528 else
1529 sv_catpv(linestr,"@F=split(' ');");
1530 }
79072805 1531 }
a0d0e21e 1532 sv_catpv(linestr, "\n");
fd049845 1533 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1534 bufend = SvPVX(linestr) + SvCUR(linestr);
a0d0e21e
LW		 1535 if (perldb && curstash != debstash) {
1536 SV *sv = NEWSV(85,0);
1537
1538 sv_upgrade(sv, SVt_PVMG);
1539 sv_setsv(sv,linestr);
1540 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1541 }
79072805 1542 goto retry;
a687059c 1543 }
e929a76b 1544 do {
fd049845 1545 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1546 fake_eof:
395c3793 1547 if (rsfp) {
a0d0e21e 1548 if (preprocess && !in_eval)
79072805 1549 (void)my_pclose(rsfp);
760ac839
LW		 1550 else if ((PerlIO *)rsfp == PerlIO_stdin())
1551 PerlIO_clearerr(rsfp);
395c3793 1552 else
760ac839 1553 (void)PerlIO_close(rsfp);
395c3793
LW		 1554 rsfp = Nullfp;
1555 }
a0d0e21e 1556 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1557 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1558 sv_catpv(linestr,";}");
fd049845 1559 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1560 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1561 minus_n = minus_p = 0;
1562 goto retry;
1563 }
fd049845 1564 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1565 sv_setpv(linestr,"");
1566 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1567 }
a0d0e21e
LW		 1568 if (doextract) {
1569 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1570 doextract = FALSE;
1571
1572 /* Incest with pod. */
1573 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1574 sv_setpv(linestr, "");
fd049845 1575 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1576 bufend = SvPVX(linestr) + SvCUR(linestr);
1577 doextract = FALSE;
1578 }
1579 }
463ee0b2 1580 incline(s);
e929a76b 1581 } while (doextract);
fd049845 1582 oldoldbufptr = oldbufptr = bufptr = linestart = s;
8990e307 1583 if (perldb && curstash != debstash) {
79072805 1584 SV *sv = NEWSV(85,0);
a687059c 1585
93a17b20 1586 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1587 sv_setsv(sv,linestr);
1588 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1589 }
463ee0b2 1590 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1591 if (curcop->cop_line == 1) {
1592 while (s < bufend && isSPACE(*s))
1593 s++;
a0d0e21e 1594 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1595 s++;
44a8e56a 1596 d = Nullch;
1597 if (!in_eval) {
1598 if (*s == '#' && *(s+1) == '!')
1599 d = s + 2;
1600#ifdef ALTERNATE_SHEBANG
1601 else {
1602 static char as[] = ALTERNATE_SHEBANG;
1603 if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1))
1604 d = s + (sizeof(as) - 1);
1605 }
1606#endif /* ALTERNATE_SHEBANG */
1607 }
1608 if (d) {
b8378b72 1609 char *ipath;
774d564b 1610 char *ipathend;
b8378b72 1611
774d564b 1612 while (isSPACE(*d))
b8378b72
CS		 1613 d++;
1614 ipath = d;
774d564b 1615 while (*d && !isSPACE(*d))
1616 d++;
1617 ipathend = d;
1618
1619#ifdef ARG_ZERO_IS_SCRIPT
1620 if (ipathend > ipath) {
1621 /*
1622 * HP-UX (at least) sets argv[0] to the script name,
1623 * which makes $^X incorrect. And Digital UNIX and Linux,
1624 * at least, set argv[0] to the basename of the Perl
1625 * interpreter. So, having found "#!", we'll set it right.
1626 */
1627 SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV));
1628 assert(SvPOK(x) || SvGMAGICAL(x));
9607fc9c 1629 if (sv_eq(x, GvSV(curcop->cop_filegv))) {
774d564b 1630 sv_setpvn(x, ipath, ipathend - ipath);
9607fc9c 1631 SvSETMAGIC(x);
1632 }
774d564b 1633 TAINT_NOT; /* $^X is always tainted, but that's OK */
8ebc5c01 1634 }
774d564b 1635#endif /* ARG_ZERO_IS_SCRIPT */
b8378b72
CS		 1636
1637 /*
1638 * Look for options.
1639 */
748a9306
LW		 1640 d = instr(s,"perl -");
1641 if (!d)
1642 d = instr(s,"perl");
44a8e56a 1643#ifdef ALTERNATE_SHEBANG
1644 /*
1645 * If the ALTERNATE_SHEBANG on this system starts with a
1646 * character that can be part of a Perl expression, then if
1647 * we see it but not "perl", we're probably looking at the
1648 * start of Perl code, not a request to hand off to some
1649 * other interpreter. Similarly, if "perl" is there, but
1650 * not in the first 'word' of the line, we assume the line
1651 * contains the start of the Perl program.
44a8e56a 1652 */
1653 if (d && *s != '#') {
774d564b 1654 char *c = ipath;
44a8e56a 1655 while (*c && !strchr("; \t\r\n\f\v#", *c))
1656 c++;
1657 if (c < d)
1658 d = Nullch; /* "perl" not in first word; ignore */
1659 else
1660 *s = '#'; /* Don't try to parse shebang line */
1661 }
774d564b 1662#endif /* ALTERNATE_SHEBANG */
748a9306 1663 if (!d &&
44a8e56a 1664 *s == '#' &&
774d564b 1665 ipathend > ipath &&
748a9306
LW		 1666 !minus_c &&
1667 !instr(s,"indir") &&
1668 instr(origargv[0],"perl"))
1669 {
9f68db38 1670 char **newargv;
9f68db38 1671
774d564b 1672 *ipathend = '\0';
1673 s = ipathend + 1;
de3bb511 1674 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1675 s++;
1676 if (s < bufend) {
1677 Newz(899,newargv,origargc+3,char*);
1678 newargv[1] = s;
de3bb511 1679 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1680 s++;
1681 *s = '\0';
1682 Copy(origargv+1, newargv+2, origargc+1, char*);
1683 }
1684 else
1685 newargv = origargv;
774d564b 1686 newargv[0] = ipath;
1687 execv(ipath, newargv);
1688 croak("Can't exec %s", ipath);
9f68db38 1689 }
748a9306 1690 if (d) {
ba6d6ac9
CS		 1691 U32 oldpdb = perldb;
1692 bool oldn = minus_n;
1693 bool oldp = minus_p;
748a9306
LW		 1694
1695 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1696 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1697
1698 if (*d++ == '-') {
8cc95fdb 1699 do {
1700 if (*d == 'M' || *d == 'm') {
1701 char *m = d;
1702 while (*d && !isSPACE(*d)) d++;
1703 croak("Too late for \"-%.*s\" option",
1704 (int)(d - m), m);
1705 }
1706 d = moreswitches(d);
1707 } while (d);
748a9306 1708 if (perldb && !oldpdb ||
b084f20b 1709 ( minus_n || minus_p ) && !(oldn || oldp) )
1710 /* if we have already added "LINE: while (<>) {",
1711 we must not do it again */
748a9306
LW		 1712 {
1713 sv_setpv(linestr, "");
fd049845 1714 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1715 bufend = SvPVX(linestr) + SvCUR(linestr);
1716 preambled = FALSE;
1717 if (perldb)
1718 (void)gv_fetchfile(origfilename);
1719 goto retry;
1720 }
a0d0e21e 1721 }
79072805 1722 }
9f68db38 1723 }
79072805 1724 }
85e6fe83 1725 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1726 bufptr = s;
1727 lex_state = LEX_FORMLINE;
1728 return yylex();
ae986130 1729 }
378cc40b 1730 goto retry;
4fdae800 1731 case '\r':
54310121 1732 warn("Illegal character \\%03o (carriage return)", '\r');
1733 croak(
1734 "(Maybe you didn't strip carriage returns after a network transfer?)\n");
4fdae800 1735 case ' ': case '\t': case '\f': case 013:
378cc40b
LW		 1736 s++;
1737 goto retry;
378cc40b 1738 case '#':
e929a76b 1739 case '\n':
79072805 1740 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1741 d = bufend;
1742 while (s < d && *s != '\n')
378cc40b 1743 s++;
0f85fab0 1744 if (s < d)
378cc40b 1745 s++;
463ee0b2 1746 incline(s);
85e6fe83 1747 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1748 bufptr = s;
1749 lex_state = LEX_FORMLINE;
1750 return yylex();
a687059c 1751 }
378cc40b 1752 }
a687059c 1753 else {
378cc40b 1754 *s = '\0';
a687059c
LW		 1755 bufend = s;
1756 }
378cc40b
LW		 1757 goto retry;
1758 case '-':
79072805 1759 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1760 s++;
748a9306
LW		 1761 bufptr = s;
1762 tmp = *s++;
1763
1764 while (s < bufend && (*s == ' ' || *s == '\t'))
1765 s++;
1766
1767 if (strnEQ(s,"=>",2)) {
1768 if (dowarn)
1769 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
ff0cee69 1770 (int)tmp, (int)tmp);
748a9306
LW		 1771 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1772 OPERATOR('-'); /* unary minus */
1773 }
e334a159 1774 last_uni = oldbufptr;
a0d0e21e 1775 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1776 switch (tmp) {
79072805
LW		 1777 case 'r': FTST(OP_FTEREAD);
1778 case 'w': FTST(OP_FTEWRITE);
1779 case 'x': FTST(OP_FTEEXEC);
1780 case 'o': FTST(OP_FTEOWNED);
1781 case 'R': FTST(OP_FTRREAD);
1782 case 'W': FTST(OP_FTRWRITE);
1783 case 'X': FTST(OP_FTREXEC);
1784 case 'O': FTST(OP_FTROWNED);
1785 case 'e': FTST(OP_FTIS);
1786 case 'z': FTST(OP_FTZERO);
1787 case 's': FTST(OP_FTSIZE);
1788 case 'f': FTST(OP_FTFILE);
1789 case 'd': FTST(OP_FTDIR);
1790 case 'l': FTST(OP_FTLINK);
1791 case 'p': FTST(OP_FTPIPE);
1792 case 'S': FTST(OP_FTSOCK);
1793 case 'u': FTST(OP_FTSUID);
1794 case 'g': FTST(OP_FTSGID);
1795 case 'k': FTST(OP_FTSVTX);
1796 case 'b': FTST(OP_FTBLK);
1797 case 'c': FTST(OP_FTCHR);
1798 case 't': FTST(OP_FTTTY);
1799 case 'T': FTST(OP_FTTEXT);
1800 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1801 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1802 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1803 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1804 default:
ff0cee69 1805 croak("Unrecognized file test: -%c", (int)tmp);
378cc40b
LW		 1806 break;
1807 }
1808 }
a687059c
LW		 1809 tmp = *s++;
1810 if (*s == tmp) {
1811 s++;
79072805
LW		 1812 if (expect == XOPERATOR)
1813 TERM(POSTDEC);
1814 else
1815 OPERATOR(PREDEC);
1816 }
1817 else if (*s == '>') {
1818 s++;
1819 s = skipspace(s);
1820 if (isIDFIRST(*s)) {
a0d0e21e 1821 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1822 TOKEN(ARROW);
79072805 1823 }
748a9306
LW		 1824 else if (*s == '$')
1825 OPERATOR(ARROW);
463ee0b2 1826 else
748a9306 1827 TERM(ARROW);
a687059c 1828 }
79072805
LW		 1829 if (expect == XOPERATOR)
1830 Aop(OP_SUBTRACT);
1831 else {
2f3197b3
LW		 1832 if (isSPACE(*s) || !isSPACE(*bufptr))
1833 check_uni();
79072805 1834 OPERATOR('-'); /* unary minus */
2f3197b3 1835 }
79072805 1836
378cc40b 1837 case '+':
a687059c
LW		 1838 tmp = *s++;
1839 if (*s == tmp) {
378cc40b 1840 s++;
79072805
LW		 1841 if (expect == XOPERATOR)
1842 TERM(POSTINC);
1843 else
1844 OPERATOR(PREINC);
378cc40b 1845 }
79072805
LW		 1846 if (expect == XOPERATOR)
1847 Aop(OP_ADD);
1848 else {
2f3197b3
LW		 1849 if (isSPACE(*s) || !isSPACE(*bufptr))
1850 check_uni();
a687059c 1851 OPERATOR('+');
2f3197b3 1852 }
a687059c 1853
378cc40b 1854 case '*':
79072805
LW		 1855 if (expect != XOPERATOR) {
1856 s = scan_ident(s, bufend, tokenbuf, TRUE);
463ee0b2 1857 expect = XOPERATOR;
a0d0e21e
LW		 1858 force_ident(tokenbuf, '*');
1859 if (!*tokenbuf)
1860 PREREF('*');
79072805 1861 TERM('*');
a687059c 1862 }
79072805
LW		 1863 s++;
1864 if (*s == '*') {
a687059c 1865 s++;
79072805 1866 PWop(OP_POW);
a687059c 1867 }
79072805
LW		 1868 Mop(OP_MULTIPLY);
1869
378cc40b 1870 case '%':
bbce6d69 1871 if (expect == XOPERATOR) {
1872 ++s;
1873 Mop(OP_MODULO);
a687059c 1874 }
bbce6d69 1875 tokenbuf[0] = '%';
1876 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1877 if (!tokenbuf[1]) {
1878 if (s == bufend)
1879 yyerror("Final % should be \\% or %name");
1880 PREREF('%');
1881 }
1882 pending_ident = '%';
1883 TERM('%');
a687059c 1884
378cc40b 1885 case '^':
79072805 1886 s++;
a0d0e21e 1887 BOop(OP_BIT_XOR);
79072805
LW		 1888 case '[':
1889 lex_brackets++;
1890 /* FALL THROUGH */
378cc40b 1891 case '~':
378cc40b 1892 case ',':
378cc40b
LW		 1893 tmp = *s++;
1894 OPERATOR(tmp);
a0d0e21e
LW		 1895 case ':':
1896 if (s[1] == ':') {
1897 len = 0;
1898 goto just_a_word;
1899 }
1900 s++;
1901 OPERATOR(':');
8990e307
LW		 1902 case '(':
1903 s++;
a0d0e21e 1904 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1905 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1906 else
1907 expect = XTERM;
1908 TOKEN('(');
378cc40b 1909 case ';':
79072805
LW		 1910 if (curcop->cop_line < copline)
1911 copline = curcop->cop_line;
378cc40b
LW		 1912 tmp = *s++;
1913 OPERATOR(tmp);
1914 case ')':
378cc40b 1915 tmp = *s++;
16d20bd9
AD		 1916 s = skipspace(s);
1917 if (*s == '{')
1918 PREBLOCK(tmp);
378cc40b 1919 TERM(tmp);
79072805
LW		 1920 case ']':
1921 s++;
463ee0b2
LW		 1922 if (lex_brackets <= 0)
1923 yyerror("Unmatched right bracket");
1924 else
1925 --lex_brackets;
79072805 1926 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1927 if (lex_brackets == 0) {
a0d0e21e 1928 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1929 lex_state = LEX_INTERPEND;
1930 }
1931 }
4633a7c4 1932 TERM(']');
79072805
LW		 1933 case '{':
1934 leftbracket:
79072805 1935 s++;
8990e307 1936 if (lex_brackets > 100) {
89bfa8cd 1937 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1938 if (newlb != lex_brackstack) {
1939 SAVEFREEPV(newlb);
1940 lex_brackstack = newlb;
1941 }
1942 }
a0d0e21e
LW		 1943 switch (expect) {
1944 case XTERM:
1945 if (lex_formbrack) {
1946 s--;
1947 PRETERMBLOCK(DO);
1948 }
1949 if (oldoldbufptr == last_lop)
1950 lex_brackstack[lex_brackets++] = XTERM;
1951 else
1952 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1953 OPERATOR(HASHBRACK);
a0d0e21e 1954 case XOPERATOR:
748a9306
LW		 1955 while (s < bufend && (*s == ' ' || *s == '\t'))
1956 s++;
44a8e56a 1957 d = s;
1958 tokenbuf[0] = '\0';
1959 if (d < bufend && *d == '-') {
1960 tokenbuf[0] = '-';
1961 d++;
1962 while (d < bufend && (*d == ' ' || *d == '\t'))
1963 d++;
1964 }
1965 if (d < bufend && isIDFIRST(*d)) {
1966 d = scan_word(d, tokenbuf + 1, FALSE, &len);
748a9306
LW		 1967 while (d < bufend && (*d == ' ' || *d == '\t'))
1968 d++;
1969 if (*d == '}') {
44a8e56a 1970 char minus = (tokenbuf[0] == '-');
748a9306 1971 if (dowarn &&
44a8e56a 1972 (keyword(tokenbuf + 1, len) ||
1973 (minus && len == 1 && isALPHA(tokenbuf[1])) ||
1974 perl_get_cv(tokenbuf + 1, FALSE) ))
748a9306 1975 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
44a8e56a 1976 tokenbuf + !minus, tokenbuf + !minus);
1977 s = force_word(s + minus, WORD, FALSE, TRUE, FALSE);
1978 if (minus)
1979 force_next('-');
748a9306
LW		 1980 }
1981 }
1982 /* FALL THROUGH */
1983 case XBLOCK:
a0d0e21e 1984 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 1985 expect = XSTATE;
a0d0e21e
LW		 1986 break;
1987 case XTERMBLOCK:
1988 lex_brackstack[lex_brackets++] = XOPERATOR;
1989 expect = XSTATE;
1990 break;
1991 default: {
1992 char *t;
1993 if (oldoldbufptr == last_lop)
1994 lex_brackstack[lex_brackets++] = XTERM;
1995 else
1996 lex_brackstack[lex_brackets++] = XOPERATOR;
1997 s = skipspace(s);
1998 if (*s == '}')
1999 OPERATOR(HASHBRACK);
2000 if (isALPHA(*s)) {
c07a80fd 2001 for (t = s; t < bufend && isALNUM(*t); t++) ;
a0d0e21e
LW		 2002 }
2003 else if (*s == '\'' || *s == '"') {
2004 t = strchr(s+1,*s);
2005 if (!t++)
2006 t = s;
2007 }
2008 else
2009 t = s;
2010 while (t < bufend && isSPACE(*t))
2011 t++;
2012 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
2013 OPERATOR(HASHBRACK);
2014 if (expect == XREF)
2015 expect = XTERM;
2016 else {
2017 lex_brackstack[lex_brackets-1] = XSTATE;
2018 expect = XSTATE;
2019 }
8990e307 2020 }
a0d0e21e 2021 break;
463ee0b2 2022 }
79072805
LW		 2023 yylval.ival = curcop->cop_line;
2024 if (isSPACE(*s) || *s == '#')
2025 copline = NOLINE; /* invalidate current command line number */
79072805 2026 TOKEN('{');
378cc40b 2027 case '}':
79072805
LW		 2028 rightbracket:
2029 s++;
463ee0b2
LW		 2030 if (lex_brackets <= 0)
2031 yyerror("Unmatched right bracket");
2032 else
2033 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 2034 if (lex_brackets < lex_formbrack)
2035 lex_formbrack = 0;
79072805 2036 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 2037 if (lex_brackets == 0) {
79072805
LW		 2038 if (lex_fakebrack) {
2039 lex_state = LEX_INTERPEND;
2040 bufptr = s;
2041 return yylex(); /* ignore fake brackets */
2042 }
fa83b5b6 2043 if (*s == '-' && s[1] == '>')
2044 lex_state = LEX_INTERPENDMAYBE;
2045 else if (*s != '[' && *s != '{')
79072805
LW		 2046 lex_state = LEX_INTERPEND;
2047 }
2048 }
748a9306
LW		 2049 if (lex_brackets < lex_fakebrack) {
2050 bufptr = s;
2051 lex_fakebrack = 0;
2052 return yylex(); /* ignore fake brackets */
2053 }
79072805
LW		 2054 force_next('}');
2055 TOKEN(';');
378cc40b
LW		 2056 case '&':
2057 s++;
2058 tmp = *s++;
2059 if (tmp == '&')
a0d0e21e 2060 AOPERATOR(ANDAND);
378cc40b 2061 s--;
463ee0b2 2062 if (expect == XOPERATOR) {
fd049845 2063 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 2064 curcop->cop_line--;
2065 warn(warn_nosemi);
2066 curcop->cop_line++;
2067 }
79072805 2068 BAop(OP_BIT_AND);
463ee0b2 2069 }
79072805
LW		 2070
2071 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
463ee0b2
LW		 2072 if (*tokenbuf) {
2073 expect = XOPERATOR;
a0d0e21e 2074 force_ident(tokenbuf, '&');
463ee0b2 2075 }
79072805
LW		 2076 else
2077 PREREF('&');
c07a80fd 2078 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 2079 TERM('&');
2080
378cc40b
LW		 2081 case '|':
2082 s++;
2083 tmp = *s++;
2084 if (tmp == '|')
a0d0e21e 2085 AOPERATOR(OROR);
378cc40b 2086 s--;
79072805 2087 BOop(OP_BIT_OR);
378cc40b
LW		 2088 case '=':
2089 s++;
2090 tmp = *s++;
2091 if (tmp == '=')
79072805
LW		 2092 Eop(OP_EQ);
2093 if (tmp == '>')
2094 OPERATOR(',');
378cc40b 2095 if (tmp == '~')
79072805 2096 PMop(OP_MATCH);
463ee0b2 2097 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
ff0cee69 2098 warn("Reversed %c= operator",(int)tmp);
378cc40b 2099 s--;
748a9306 2100 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 2101 (s == linestart+1 || s[-2] == '\n') )
748a9306 2102 {
a5f75d66
AD		 2103 if (in_eval && !rsfp) {
2104 d = bufend;
2105 while (s < d) {
2106 if (*s++ == '\n') {
2107 incline(s);
2108 if (strnEQ(s,"=cut",4)) {
2109 s = strchr(s,'\n');
2110 if (s)
2111 s++;
2112 else
2113 s = d;
2114 incline(s);
2115 goto retry;
2116 }
2117 }
2118 }
2119 goto retry;
2120 }
a0d0e21e
LW		 2121 s = bufend;
2122 doextract = TRUE;
2123 goto retry;
2124 }
2125 if (lex_brackets < lex_formbrack) {
2126 char *t;
2127 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2128 if (*t == '\n' || *t == '#') {
2129 s--;
2130 expect = XBLOCK;
2131 goto leftbracket;
2132 }
79072805 2133 }
a0d0e21e
LW		 2134 yylval.ival = 0;
2135 OPERATOR(ASSIGNOP);
378cc40b
LW		 2136 case '!':
2137 s++;
2138 tmp = *s++;
2139 if (tmp == '=')
79072805 2140 Eop(OP_NE);
378cc40b 2141 if (tmp == '~')
79072805 2142 PMop(OP_NOT);
378cc40b
LW		 2143 s--;
2144 OPERATOR('!');
2145 case '<':
79072805 2146 if (expect != XOPERATOR) {
93a17b20 2147 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2148 check_uni();
79072805
LW		 2149 if (s[1] == '<')
2150 s = scan_heredoc(s);
2151 else
2152 s = scan_inputsymbol(s);
2153 TERM(sublex_start());
378cc40b
LW		 2154 }
2155 s++;
2156 tmp = *s++;
2157 if (tmp == '<')
79072805 2158 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2159 if (tmp == '=') {
2160 tmp = *s++;
2161 if (tmp == '>')
79072805 2162 Eop(OP_NCMP);
395c3793 2163 s--;
79072805 2164 Rop(OP_LE);
395c3793 2165 }
378cc40b 2166 s--;
79072805 2167 Rop(OP_LT);
378cc40b
LW		 2168 case '>':
2169 s++;
2170 tmp = *s++;
2171 if (tmp == '>')
79072805 2172 SHop(OP_RIGHT_SHIFT);
378cc40b 2173 if (tmp == '=')
79072805 2174 Rop(OP_GE);
378cc40b 2175 s--;
79072805 2176 Rop(OP_GT);
378cc40b
LW		 2177
2178 case '$':
bbce6d69 2179 CLINE;
2180
2181 if (expect == XOPERATOR) {
2182 if (lex_formbrack && lex_brackets == lex_formbrack) {
2183 expect = XTERM;
2184 depcom();
2185 return ','; /* grandfather non-comma-format format */
8990e307 2186 }
bbce6d69 2187 }
2188
2189 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2190 if (expect == XOPERATOR)
2191 no_op("Array length", bufptr);
2192 tokenbuf[0] = '@';
2193 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2194 if (!tokenbuf[1])
a0d0e21e 2195 PREREF(DOLSHARP);
463ee0b2 2196 expect = XOPERATOR;
bbce6d69 2197 pending_ident = '#';
463ee0b2 2198 TOKEN(DOLSHARP);
79072805 2199 }
bbce6d69 2200
2201 if (expect == XOPERATOR)
2202 no_op("Scalar", bufptr);
2203 tokenbuf[0] = '$';
93a17b20 2204 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
bbce6d69 2205 if (!tokenbuf[1]) {
2206 if (s == bufend)
2207 yyerror("Final $ should be \\$ or $name");
2208 PREREF('$');
8990e307 2209 }
a0d0e21e 2210
bbce6d69 2211 /* This kludge not intended to be bulletproof. */
2212 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2213 yylval.opval = newSVOP(OP_CONST, 0,
2214 newSViv((IV)compiling.cop_arybase));
2215 yylval.opval->op_private = OPpCONST_ARYBASE;
2216 TERM(THING);
2217 }
2218
ff68c719 2219 d = s;
2220 if (lex_state == LEX_NORMAL)
2221 s = skipspace(s);
2222
bbce6d69 2223 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2224 char *t;
2225 if (*s == '[') {
2226 tokenbuf[0] = '@';
2227 if (dowarn) {
2228 for(t = s + 1;
2229 isSPACE(*t) || isALNUM(*t) || *t == '$';
2230 t++) ;
a0d0e21e
LW		 2231 if (*t++ == ',') {
2232 bufptr = skipspace(bufptr);
bbce6d69 2233 while (t < bufend && *t != ']')
2234 t++;
a0d0e21e 2235 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2236 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2237 }
2238 }
bbce6d69 2239 }
2240 else if (*s == '{') {
2241 tokenbuf[0] = '%';
2242 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2243 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2244 {
a0d0e21e 2245 char tmpbuf[1024];
a0d0e21e
LW		 2246 STRLEN len;
2247 for (t++; isSPACE(*t); t++) ;
748a9306
LW		 2248 if (isIDFIRST(*t)) {
2249 t = scan_word(t, tmpbuf, TRUE, &len);
2250 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2251 warn("You need to quote \"%s\"", tmpbuf);
2252 }
93a17b20
LW		 2253 }
2254 }
2f3197b3 2255 }
bbce6d69 2256
2257 expect = XOPERATOR;
ff68c719 2258 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
bbce6d69 2259 bool islop = (last_lop == oldoldbufptr);
bbce6d69 2260 if (!islop || last_lop_op == OP_GREPSTART)
2261 expect = XOPERATOR;
2262 else if (strchr("$@\"'`q", *s))
2263 expect = XTERM; /* e.g. print $fh "foo" */
2264 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2265 expect = XTERM; /* e.g. print $fh &sub */
68dc0745 2266 else if (isIDFIRST(*s)) {
2267 char tmpbuf[1024];
2268 scan_word(s, tmpbuf, TRUE, &len);
2269 if (keyword(tmpbuf, len))
2270 expect = XTERM; /* e.g. print $fh length() */
2271 else {
2272 GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV);
2273 if (gv && GvCVu(gv))
2274 expect = XTERM; /* e.g. print $fh subr() */
2275 }
2276 }
bbce6d69 2277 else if (isDIGIT(*s))
2278 expect = XTERM; /* e.g. print $fh 3 */
2279 else if (*s == '.' && isDIGIT(s[1]))
2280 expect = XTERM; /* e.g. print $fh .3 */
2281 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2282 expect = XTERM; /* e.g. print $fh -1 */
2283 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2284 expect = XTERM; /* print $fh <<"EOF" */
2285 }
2286 pending_ident = '$';
79072805 2287 TOKEN('$');
378cc40b
LW		 2288
2289 case '@':
8990e307 2290 if (expect == XOPERATOR)
bbce6d69 2291 no_op("Array", s);
2292 tokenbuf[0] = '@';
2293 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2294 if (!tokenbuf[1]) {
2295 if (s == bufend)
2296 yyerror("Final @ should be \\@ or @name");
2297 PREREF('@');
2298 }
ff68c719 2299 if (lex_state == LEX_NORMAL)
2300 s = skipspace(s);
bbce6d69 2301 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2302 if (*s == '{')
2303 tokenbuf[0] = '%';
a0d0e21e
LW		 2304
2305 /* Warn about @ where they meant $. */
2306 if (dowarn) {
2307 if (*s == '[' || *s == '{') {
2308 char *t = s + 1;
2309 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2310 t++;
2311 if (*t == '}' || *t == ']') {
2312 t++;
2313 bufptr = skipspace(bufptr);
2314 warn("Scalar value %.*s better written as $%.*s",
2315 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2316 }
93a17b20
LW		 2317 }
2318 }
463ee0b2 2319 }
bbce6d69 2320 pending_ident = '@';
79072805 2321 TERM('@');
378cc40b
LW		 2322
2323 case '/': /* may either be division or pattern */
2324 case '?': /* may either be conditional or pattern */
79072805 2325 if (expect != XOPERATOR) {
2f3197b3 2326 check_uni();
79072805
LW		 2327 s = scan_pat(s);
2328 TERM(sublex_start());
378cc40b
LW		 2329 }
2330 tmp = *s++;
a687059c 2331 if (tmp == '/')
79072805 2332 Mop(OP_DIVIDE);
378cc40b
LW		 2333 OPERATOR(tmp);
2334
2335 case '.':
748a9306 2336 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2337 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2338 lex_formbrack = 0;
8990e307 2339 expect = XSTATE;
79072805
LW		 2340 goto rightbracket;
2341 }
2342 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2343 tmp = *s++;
a687059c
LW		 2344 if (*s == tmp) {
2345 s++;
2f3197b3
LW		 2346 if (*s == tmp) {
2347 s++;
79072805 2348 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2349 }
2350 else
79072805 2351 yylval.ival = 0;
378cc40b 2352 OPERATOR(DOTDOT);
a687059c 2353 }
79072805 2354 if (expect != XOPERATOR)
2f3197b3 2355 check_uni();
79072805 2356 Aop(OP_CONCAT);
378cc40b
LW		 2357 }
2358 /* FALL THROUGH */
2359 case '0': case '1': case '2': case '3': case '4':
2360 case '5': case '6': case '7': case '8': case '9':
79072805 2361 s = scan_num(s);
8990e307
LW		 2362 if (expect == XOPERATOR)
2363 no_op("Number",s);
79072805
LW		 2364 TERM(THING);
2365
2366 case '\'':
8990e307 2367 s = scan_str(s);
463ee0b2 2368 if (expect == XOPERATOR) {
a0d0e21e
LW		 2369 if (lex_formbrack && lex_brackets == lex_formbrack) {
2370 expect = XTERM;
2371 depcom();
2372 return ','; /* grandfather non-comma-format format */
2373 }
463ee0b2 2374 else
8990e307 2375 no_op("String",s);
463ee0b2 2376 }
79072805 2377 if (!s)
85e6fe83 2378 missingterm((char*)0);
79072805
LW		 2379 yylval.ival = OP_CONST;
2380 TERM(sublex_start());
2381
2382 case '"':
8990e307 2383 s = scan_str(s);
463ee0b2 2384 if (expect == XOPERATOR) {
a0d0e21e
LW		 2385 if (lex_formbrack && lex_brackets == lex_formbrack) {
2386 expect = XTERM;
2387 depcom();
2388 return ','; /* grandfather non-comma-format format */
2389 }
463ee0b2 2390 else
8990e307 2391 no_op("String",s);
463ee0b2 2392 }
79072805 2393 if (!s)
85e6fe83 2394 missingterm((char*)0);
4633a7c4
LW		 2395 yylval.ival = OP_CONST;
2396 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2397 if (*d == '$' || *d == '@' || *d == '\\') {
2398 yylval.ival = OP_STRINGIFY;
2399 break;
2400 }
2401 }
79072805
LW		 2402 TERM(sublex_start());
2403
2404 case '`':
2405 s = scan_str(s);
8990e307
LW		 2406 if (expect == XOPERATOR)
2407 no_op("Backticks",s);
79072805 2408 if (!s)
85e6fe83 2409 missingterm((char*)0);
79072805
LW		 2410 yylval.ival = OP_BACKTICK;
2411 set_csh();
2412 TERM(sublex_start());
2413
2414 case '\\':
2415 s++;
748a9306
LW		 2416 if (dowarn && lex_inwhat && isDIGIT(*s))
2417 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2418 if (expect == XOPERATOR)
2419 no_op("Backslash",s);
79072805
LW		 2420 OPERATOR(REFGEN);
2421
2422 case 'x':
2423 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2424 s++;
2425 Mop(OP_REPEAT);
2f3197b3 2426 }
79072805
LW		 2427 goto keylookup;
2428
378cc40b 2429 case '_':
79072805
LW		 2430 case 'a': case 'A':
2431 case 'b': case 'B':
2432 case 'c': case 'C':
2433 case 'd': case 'D':
2434 case 'e': case 'E':
2435 case 'f': case 'F':
2436 case 'g': case 'G':
2437 case 'h': case 'H':
2438 case 'i': case 'I':
2439 case 'j': case 'J':
2440 case 'k': case 'K':
2441 case 'l': case 'L':
2442 case 'm': case 'M':
2443 case 'n': case 'N':
2444 case 'o': case 'O':
2445 case 'p': case 'P':
2446 case 'q': case 'Q':
2447 case 'r': case 'R':
2448 case 's': case 'S':
2449 case 't': case 'T':
2450 case 'u': case 'U':
2451 case 'v': case 'V':
2452 case 'w': case 'W':
2453 case 'X':
2454 case 'y': case 'Y':
2455 case 'z': case 'Z':
2456
2457 keylookup:
748a9306 2458 bufptr = s;
463ee0b2 2459 s = scan_word(s, tokenbuf, FALSE, &len);
8ebc5c01 2460
2461 /* Some keywords can be followed by any delimiter, including ':' */
2462 tmp = (len == 1 && strchr("msyq", tokenbuf[0]) ||
2463 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2464 (tokenbuf[0] == 'q' &&
2465 strchr("qwx", tokenbuf[1]))));
2466
2467 /* x::* is just a word, unless x is "CORE" */
2468 if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
4633a7c4
LW		 2469 goto just_a_word;
2470
3643fb5f
CS		 2471 d = s;
2472 while (d < bufend && isSPACE(*d))
2473 d++; /* no comments skipped here, or s### is misparsed */
2474
2475 /* Is this a label? */
8ebc5c01 2476 if (!tmp && expect == XSTATE
2477 && d < bufend && *d == ':' && *(d + 1) != ':') {
2478 s = d + 1;
2479 yylval.pval = savepv(tokenbuf);
2480 CLINE;
2481 TOKEN(LABEL);
3643fb5f
CS		 2482 }
2483
2484 /* Check for keywords */
a0d0e21e 2485 tmp = keyword(tokenbuf, len);
748a9306
LW		 2486
2487 /* Is this a word before a => operator? */
748a9306
LW		 2488 if (strnEQ(d,"=>",2)) {
2489 CLINE;
2490 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2491 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2492 tokenbuf, tokenbuf);
2493 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2494 yylval.opval->op_private = OPpCONST_BARE;
2495 TERM(WORD);
2496 }
2497
a0d0e21e
LW		 2498 if (tmp < 0) { /* second-class keyword? */
2499 GV* gv;
2500 if (expect != XOPERATOR &&
a5f75d66
AD		 2501 (*s != ':' || s[1] != ':') &&
2502 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2503 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2504 {
2505 tmp = 0;
2506 }
2507 else
2508 tmp = -tmp;
2509 }
2510
2511 reserved_word:
2512 switch (tmp) {
79072805
LW		 2513
2514 default: /* not a keyword */
93a17b20
LW		 2515 just_a_word: {
2516 GV *gv;
748a9306 2517 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2518
2519 /* Get the rest if it looks like a package qualifier */
2520
a0d0e21e 2521 if (*s == '\'' || *s == ':' && s[1] == ':') {
463ee0b2 2522 s = scan_word(s, tokenbuf + len, TRUE, &len);
a0d0e21e
LW		 2523 if (!len)
2524 croak("Bad name after %s::", tokenbuf);
2525 }
8990e307 2526
3643fb5f 2527 if (expect == XOPERATOR) {
fd049845 2528 if (bufptr == linestart) {
463ee0b2
LW		 2529 curcop->cop_line--;
2530 warn(warn_nosemi);
2531 curcop->cop_line++;
2532 }
2533 else
54310121 2534 no_op("Bareword",s);
463ee0b2 2535 }
8990e307
LW		 2536
2537 /* Look for a subroutine with this name in current package. */
2538
85e6fe83 2539 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2540
a0d0e21e
LW		 2541 /* Presume this is going to be a bareword of some sort. */
2542
2543 CLINE;
2544 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2545 yylval.opval->op_private = OPpCONST_BARE;
2546
8990e307
LW		 2547 /* See if it's the indirect object for a list operator. */
2548
a0d0e21e
LW		 2549 if (oldoldbufptr &&
2550 oldoldbufptr < bufptr &&
2551 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2552 /* NO SKIPSPACE BEFORE HERE! */
2553 (expect == XREF ||
2554 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2555 {
748a9306
LW		 2556 bool immediate_paren = *s == '(';
2557
a0d0e21e
LW		 2558 /* (Now we can afford to cross potential line boundary.) */
2559 s = skipspace(s);
2560
2561 /* Two barewords in a row may indicate method call. */
2562
2563 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2564 return tmp;
2565
2566 /* If not a declared subroutine, it's an indirect object. */
2567 /* (But it's an indir obj regardless for sort.) */
2568
8e07c86e 2569 if ((last_lop_op == OP_SORT ||
8ebc5c01 2570 (!immediate_paren && (!gv || !GvCVu(gv))) ) &&
8e07c86e 2571 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2572 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2573 goto bareword;
93a17b20
LW		 2574 }
2575 }
8990e307
LW		 2576
2577 /* If followed by a paren, it's certainly a subroutine. */
2578
2579 expect = XOPERATOR;
2580 s = skipspace(s);
93a17b20 2581 if (*s == '(') {
79072805 2582 CLINE;
a0d0e21e 2583 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2584 expect = XOPERATOR;
93a17b20 2585 force_next(WORD);
c07a80fd 2586 yylval.ival = 0;
463ee0b2 2587 TOKEN('&');
79072805 2588 }
93a17b20 2589
a0d0e21e 2590 /* If followed by var or block, call it a method (unless sub) */
8990e307 2591
8ebc5c01 2592 if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) {
463ee0b2 2593 last_lop = oldbufptr;
8990e307 2594 last_lop_op = OP_METHOD;
93a17b20 2595 PREBLOCK(METHOD);
463ee0b2
LW		 2596 }
2597
8990e307
LW		 2598 /* If followed by a bareword, see if it looks like indir obj. */
2599
a0d0e21e
LW		 2600 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2601 return tmp;
93a17b20 2602
8990e307
LW		 2603 /* Not a method, so call it a subroutine (if defined) */
2604
8ebc5c01 2605 if (gv && GvCVu(gv)) {
4633a7c4 2606 CV* cv = GvCV(gv);
8990e307 2607 if (*s == '(') {
a5f75d66 2608 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2609 expect = XTERM;
2610 force_next(WORD);
c07a80fd 2611 yylval.ival = 0;
8990e307
LW		 2612 TOKEN('&');
2613 }
748a9306 2614 if (lastchar == '-')
c2960299 2615 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2616 tokenbuf, tokenbuf);
8990e307 2617 last_lop = oldbufptr;
a0d0e21e 2618 last_lop_op = OP_ENTERSUB;
89bfa8cd 2619 /* Check for a constant sub */
760ac839
LW		 2620 {
2621 SV *sv = cv_const_sv(cv);
89bfa8cd 2622 if (sv) {
2623 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2624 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2625 yylval.opval->op_private = 0;
2626 TOKEN(WORD);
2627 }
2628 }
2629
a5f75d66
AD		 2630 /* Resolve to GV now. */
2631 op_free(yylval.opval);
2632 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2633 /* Is there a prototype? */
2634 if (SvPOK(cv)) {
2635 STRLEN len;
2636 char *proto = SvPV((SV*)cv, len);
2637 if (!len)
2638 TERM(FUNC0SUB);
2639 if (strEQ(proto, "$"))
2640 OPERATOR(UNIOPSUB);
2641 if (*proto == '&' && *s == '{') {
2642 sv_setpv(subname,"__ANON__");
2643 PREBLOCK(LSTOPSUB);
2644 }
2645 }
a5f75d66 2646 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2647 expect = XTERM;
2648 force_next(WORD);
2649 TOKEN(NOAMP);
2650 }
748a9306
LW		 2651
2652 if (hints & HINT_STRICT_SUBS &&
2653 lastchar != '-' &&
a0d0e21e 2654 strnNE(s,"->",2) &&
9b01e405 2655 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2656 last_lop_op != OP_ACCEPT &&
2657 last_lop_op != OP_PIPE_OP &&
2658 last_lop_op != OP_SOCKPAIR)
2659 {
2660 warn(
2661 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2662 tokenbuf);
2663 ++error_count;
2664 }
8990e307
LW		 2665
2666 /* Call it a bare word */
2667
748a9306
LW		 2668 bareword:
2669 if (dowarn) {
2670 if (lastchar != '-') {
2671 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2672 if (!*d)
2673 warn(warn_reserved, tokenbuf);
2674 }
2675 }
2676 if (lastchar && strchr("*%&", lastchar)) {
2677 warn("Operator or semicolon missing before %c%s",
2678 lastchar, tokenbuf);
c2960299 2679 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2680 lastchar, lastchar);
2681 }
93a17b20 2682 TOKEN(WORD);
79072805 2683 }
79072805 2684
68dc0745 2685 case KEY___FILE__:
79072805 2686 case KEY___LINE__:
79072805
LW		 2687 if (tokenbuf[2] == 'L')
2688 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2689 else
463ee0b2 2690 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
79072805
LW		 2691 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2692 TERM(THING);
68dc0745 2693
2694 case KEY___PACKAGE__:
2695 yylval.opval = (OP*)newSVOP(OP_CONST, 0,
2696 (curstash
2697 ? newSVsv(curstname)
2698 : &sv_undef));
2699 TERM(THING);
79072805 2700
e50aee73 2701 case KEY___DATA__:
79072805
LW		 2702 case KEY___END__: {
2703 GV *gv;
79072805
LW		 2704
2705 /*SUPPRESS 560*/
a5f75d66 2706 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2707 char dname[256];
2708 char *pname = "main";
2709 if (tokenbuf[2] == 'D')
2710 pname = HvNAME(curstash ? curstash : defstash);
2711 sprintf(dname,"%s::DATA", pname);
2712 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
a5f75d66 2713 GvMULTI_on(gv);
79072805 2714 if (!GvIO(gv))
a0d0e21e
LW		 2715 GvIOp(gv) = newIO();
2716 IoIFP(GvIOp(gv)) = rsfp;
2717#if defined(HAS_FCNTL) && defined(F_SETFD)
2718 {
760ac839 2719 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2720 fcntl(fd,F_SETFD,fd >= 3);
2721 }
79072805 2722#endif
fd049845 2723 /* Mark this internal pseudo-handle as clean */
2724 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2725 if (preprocess)
a0d0e21e 2726 IoTYPE(GvIOp(gv)) = '|';
760ac839 2727 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2728 IoTYPE(GvIOp(gv)) = '-';
79072805 2729 else
a0d0e21e 2730 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2731 rsfp = Nullfp;
2732 }
2733 goto fake_eof;
e929a76b 2734 }
de3bb511 2735
8990e307 2736 case KEY_AUTOLOAD:
ed6116ce 2737 case KEY_DESTROY:
79072805
LW		 2738 case KEY_BEGIN:
2739 case KEY_END:
a0d0e21e 2740 if (expect == XSTATE) {
93a17b20
LW		 2741 s = bufptr;
2742 goto really_sub;
79072805
LW		 2743 }
2744 goto just_a_word;
2745
a0d0e21e
LW		 2746 case KEY_CORE:
2747 if (*s == ':' && s[1] == ':') {
2748 s += 2;
748a9306 2749 d = s;
a0d0e21e
LW		 2750 s = scan_word(s, tokenbuf, FALSE, &len);
2751 tmp = keyword(tokenbuf, len);
2752 if (tmp < 0)
2753 tmp = -tmp;
2754 goto reserved_word;
2755 }
2756 goto just_a_word;
2757
463ee0b2
LW		 2758 case KEY_abs:
2759 UNI(OP_ABS);
2760
79072805
LW		 2761 case KEY_alarm:
2762 UNI(OP_ALARM);
2763
2764 case KEY_accept:
a0d0e21e 2765 LOP(OP_ACCEPT,XTERM);
79072805 2766
463ee0b2
LW		 2767 case KEY_and:
2768 OPERATOR(ANDOP);
2769
79072805 2770 case KEY_atan2:
a0d0e21e 2771 LOP(OP_ATAN2,XTERM);
85e6fe83 2772
79072805 2773 case KEY_bind:
a0d0e21e 2774 LOP(OP_BIND,XTERM);
79072805
LW		 2775
2776 case KEY_binmode:
2777 UNI(OP_BINMODE);
2778
2779 case KEY_bless:
a0d0e21e 2780 LOP(OP_BLESS,XTERM);
79072805
LW		 2781
2782 case KEY_chop:
2783 UNI(OP_CHOP);
2784
2785 case KEY_continue:
2786 PREBLOCK(CONTINUE);
2787
2788 case KEY_chdir:
85e6fe83 2789 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2790 UNI(OP_CHDIR);
2791
2792 case KEY_close:
2793 UNI(OP_CLOSE);
2794
2795 case KEY_closedir:
2796 UNI(OP_CLOSEDIR);
2797
2798 case KEY_cmp:
2799 Eop(OP_SCMP);
2800
2801 case KEY_caller:
2802 UNI(OP_CALLER);
2803
2804 case KEY_crypt:
2805#ifdef FCRYPT
de3bb511
LW		 2806 if (!cryptseen++)
2807 init_des();
a687059c 2808#endif
a0d0e21e 2809 LOP(OP_CRYPT,XTERM);
79072805
LW		 2810
2811 case KEY_chmod:
748a9306
LW		 2812 if (dowarn) {
2813 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2814 if (*d != '0' && isDIGIT(*d))
2815 yywarn("chmod: mode argument is missing initial 0");
2816 }
a0d0e21e 2817 LOP(OP_CHMOD,XTERM);
79072805
LW		 2818
2819 case KEY_chown:
a0d0e21e 2820 LOP(OP_CHOWN,XTERM);
79072805
LW		 2821
2822 case KEY_connect:
a0d0e21e 2823 LOP(OP_CONNECT,XTERM);
79072805 2824
463ee0b2
LW		 2825 case KEY_chr:
2826 UNI(OP_CHR);
2827
79072805
LW		 2828 case KEY_cos:
2829 UNI(OP_COS);
2830
2831 case KEY_chroot:
2832 UNI(OP_CHROOT);
2833
2834 case KEY_do:
2835 s = skipspace(s);
2836 if (*s == '{')
a0d0e21e 2837 PRETERMBLOCK(DO);
79072805 2838 if (*s != '\'')
a0d0e21e 2839 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2840 OPERATOR(DO);
79072805
LW		 2841
2842 case KEY_die:
a0d0e21e
LW		 2843 hints |= HINT_BLOCK_SCOPE;
2844 LOP(OP_DIE,XTERM);
79072805
LW		 2845
2846 case KEY_defined:
2847 UNI(OP_DEFINED);
2848
2849 case KEY_delete:
a0d0e21e 2850 UNI(OP_DELETE);
79072805
LW		 2851
2852 case KEY_dbmopen:
a0d0e21e
LW		 2853 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2854 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2855
2856 case KEY_dbmclose:
2857 UNI(OP_DBMCLOSE);
2858
2859 case KEY_dump:
a0d0e21e 2860 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2861 LOOPX(OP_DUMP);
2862
2863 case KEY_else:
2864 PREBLOCK(ELSE);
2865
2866 case KEY_elsif:
2867 yylval.ival = curcop->cop_line;
2868 OPERATOR(ELSIF);
2869
2870 case KEY_eq:
2871 Eop(OP_SEQ);
2872
a0d0e21e
LW		 2873 case KEY_exists:
2874 UNI(OP_EXISTS);
2875
79072805
LW		 2876 case KEY_exit:
2877 UNI(OP_EXIT);
2878
2879 case KEY_eval:
79072805 2880 s = skipspace(s);
a0d0e21e 2881 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2882 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2883
2884 case KEY_eof:
2885 UNI(OP_EOF);
2886
2887 case KEY_exp:
2888 UNI(OP_EXP);
2889
2890 case KEY_each:
2891 UNI(OP_EACH);
2892
2893 case KEY_exec:
2894 set_csh();
a0d0e21e 2895 LOP(OP_EXEC,XREF);
79072805
LW		 2896
2897 case KEY_endhostent:
2898 FUN0(OP_EHOSTENT);
2899
2900 case KEY_endnetent:
2901 FUN0(OP_ENETENT);
2902
2903 case KEY_endservent:
2904 FUN0(OP_ESERVENT);
2905
2906 case KEY_endprotoent:
2907 FUN0(OP_EPROTOENT);
2908
2909 case KEY_endpwent:
2910 FUN0(OP_EPWENT);
2911
2912 case KEY_endgrent:
2913 FUN0(OP_EGRENT);
2914
2915 case KEY_for:
2916 case KEY_foreach:
2917 yylval.ival = curcop->cop_line;
55497cff 2918 s = skipspace(s);
2919 if (isIDFIRST(*s)) {
2920 char *p = s;
2921 if ((bufend - p) >= 3 &&
2922 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2923 p += 2;
2924 p = skipspace(p);
2925 if (isIDFIRST(*p))
2926 croak("Missing $ on loop variable");
2927 }
79072805
LW		 2928 OPERATOR(FOR);
2929
2930 case KEY_formline:
a0d0e21e 2931 LOP(OP_FORMLINE,XTERM);
79072805
LW		 2932
2933 case KEY_fork:
2934 FUN0(OP_FORK);
2935
2936 case KEY_fcntl:
a0d0e21e 2937 LOP(OP_FCNTL,XTERM);
79072805
LW		 2938
2939 case KEY_fileno:
2940 UNI(OP_FILENO);
2941
2942 case KEY_flock:
a0d0e21e 2943 LOP(OP_FLOCK,XTERM);
79072805
LW		 2944
2945 case KEY_gt:
2946 Rop(OP_SGT);
2947
2948 case KEY_ge:
2949 Rop(OP_SGE);
2950
2951 case KEY_grep:
a0d0e21e 2952 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 2953
2954 case KEY_goto:
a0d0e21e 2955 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2956 LOOPX(OP_GOTO);
2957
2958 case KEY_gmtime:
2959 UNI(OP_GMTIME);
2960
2961 case KEY_getc:
2962 UNI(OP_GETC);
2963
2964 case KEY_getppid:
2965 FUN0(OP_GETPPID);
2966
2967 case KEY_getpgrp:
2968 UNI(OP_GETPGRP);
2969
2970 case KEY_getpriority:
a0d0e21e 2971 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 2972
2973 case KEY_getprotobyname:
2974 UNI(OP_GPBYNAME);
2975
2976 case KEY_getprotobynumber:
a0d0e21e 2977 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 2978
2979 case KEY_getprotoent:
2980 FUN0(OP_GPROTOENT);
2981
2982 case KEY_getpwent:
2983 FUN0(OP_GPWENT);
2984
2985 case KEY_getpwnam:
ff68c719 2986 UNI(OP_GPWNAM);
79072805
LW		 2987
2988 case KEY_getpwuid:
ff68c719 2989 UNI(OP_GPWUID);
79072805
LW		 2990
2991 case KEY_getpeername:
2992 UNI(OP_GETPEERNAME);
2993
2994 case KEY_gethostbyname:
2995 UNI(OP_GHBYNAME);
2996
2997 case KEY_gethostbyaddr:
a0d0e21e 2998 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 2999
3000 case KEY_gethostent:
3001 FUN0(OP_GHOSTENT);
3002
3003 case KEY_getnetbyname:
3004 UNI(OP_GNBYNAME);
3005
3006 case KEY_getnetbyaddr:
a0d0e21e 3007 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 3008
3009 case KEY_getnetent:
3010 FUN0(OP_GNETENT);
3011
3012 case KEY_getservbyname:
a0d0e21e 3013 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 3014
3015 case KEY_getservbyport:
a0d0e21e 3016 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 3017
3018 case KEY_getservent:
3019 FUN0(OP_GSERVENT);
3020
3021 case KEY_getsockname:
3022 UNI(OP_GETSOCKNAME);
3023
3024 case KEY_getsockopt:
a0d0e21e 3025 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 3026
3027 case KEY_getgrent:
3028 FUN0(OP_GGRENT);
3029
3030 case KEY_getgrnam:
ff68c719 3031 UNI(OP_GGRNAM);
79072805
LW		 3032
3033 case KEY_getgrgid:
ff68c719 3034 UNI(OP_GGRGID);
79072805
LW		 3035
3036 case KEY_getlogin:
3037 FUN0(OP_GETLOGIN);
3038
93a17b20 3039 case KEY_glob:
a0d0e21e
LW		 3040 set_csh();
3041 LOP(OP_GLOB,XTERM);
93a17b20 3042
79072805
LW		 3043 case KEY_hex:
3044 UNI(OP_HEX);
3045
3046 case KEY_if:
3047 yylval.ival = curcop->cop_line;
71be2cbc 3048 OPERATOR(IF);
79072805
LW		 3049
3050 case KEY_index:
a0d0e21e 3051 LOP(OP_INDEX,XTERM);
79072805
LW		 3052
3053 case KEY_int:
3054 UNI(OP_INT);
3055
3056 case KEY_ioctl:
a0d0e21e 3057 LOP(OP_IOCTL,XTERM);
79072805
LW		 3058
3059 case KEY_join:
a0d0e21e 3060 LOP(OP_JOIN,XTERM);
79072805
LW		 3061
3062 case KEY_keys:
3063 UNI(OP_KEYS);
3064
3065 case KEY_kill:
a0d0e21e 3066 LOP(OP_KILL,XTERM);
79072805
LW		 3067
3068 case KEY_last:
a0d0e21e 3069 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 3070 LOOPX(OP_LAST);
a0d0e21e 3071
79072805
LW		 3072 case KEY_lc:
3073 UNI(OP_LC);
3074
3075 case KEY_lcfirst:
3076 UNI(OP_LCFIRST);
3077
3078 case KEY_local:
3079 OPERATOR(LOCAL);
3080
3081 case KEY_length:
3082 UNI(OP_LENGTH);
3083
3084 case KEY_lt:
3085 Rop(OP_SLT);
3086
3087 case KEY_le:
3088 Rop(OP_SLE);
3089
3090 case KEY_localtime:
3091 UNI(OP_LOCALTIME);
3092
3093 case KEY_log:
3094 UNI(OP_LOG);
3095
3096 case KEY_link:
a0d0e21e 3097 LOP(OP_LINK,XTERM);
79072805
LW		 3098
3099 case KEY_listen:
a0d0e21e 3100 LOP(OP_LISTEN,XTERM);
79072805
LW		 3101
3102 case KEY_lstat:
3103 UNI(OP_LSTAT);
3104
3105 case KEY_m:
3106 s = scan_pat(s);
3107 TERM(sublex_start());
3108
a0d0e21e
LW		 3109 case KEY_map:
3110 LOP(OP_MAPSTART,XREF);
3111
79072805 3112 case KEY_mkdir:
a0d0e21e 3113 LOP(OP_MKDIR,XTERM);
79072805
LW		 3114
3115 case KEY_msgctl:
a0d0e21e 3116 LOP(OP_MSGCTL,XTERM);
79072805
LW		 3117
3118 case KEY_msgget:
a0d0e21e 3119 LOP(OP_MSGGET,XTERM);
79072805
LW		 3120
3121 case KEY_msgrcv:
a0d0e21e 3122 LOP(OP_MSGRCV,XTERM);
79072805
LW		 3123
3124 case KEY_msgsnd:
a0d0e21e 3125 LOP(OP_MSGSND,XTERM);
79072805 3126
93a17b20
LW		 3127 case KEY_my:
3128 in_my = TRUE;
55497cff 3129 OPERATOR(MY);
93a17b20 3130
79072805 3131 case KEY_next:
a0d0e21e 3132 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3133 LOOPX(OP_NEXT);
3134
3135 case KEY_ne:
3136 Eop(OP_SNE);
3137
a0d0e21e
LW		 3138 case KEY_no:
3139 if (expect != XSTATE)
3140 yyerror("\"no\" not allowed in expression");
3141 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3142 s = force_version(s);
a0d0e21e
LW		 3143 yylval.ival = 0;
3144 OPERATOR(USE);
3145
3146 case KEY_not:
3147 OPERATOR(NOTOP);
3148
79072805 3149 case KEY_open:
93a17b20
LW		 3150 s = skipspace(s);
3151 if (isIDFIRST(*s)) {
3152 char *t;
3153 for (d = s; isALNUM(*d); d++) ;
3154 t = skipspace(d);
3155 if (strchr("|&*+-=!?:.", *t))
3156 warn("Precedence problem: open %.*s should be open(%.*s)",
3157 d-s,s, d-s,s);
3158 }
a0d0e21e 3159 LOP(OP_OPEN,XTERM);
79072805 3160
463ee0b2 3161 case KEY_or:
a0d0e21e 3162 yylval.ival = OP_OR;
463ee0b2
LW		 3163 OPERATOR(OROP);
3164
79072805
LW		 3165 case KEY_ord:
3166 UNI(OP_ORD);
3167
3168 case KEY_oct:
3169 UNI(OP_OCT);
3170
3171 case KEY_opendir:
a0d0e21e 3172 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3173
3174 case KEY_print:
3175 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3176 LOP(OP_PRINT,XREF);
79072805
LW		 3177
3178 case KEY_printf:
3179 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3180 LOP(OP_PRTF,XREF);
79072805 3181
c07a80fd 3182 case KEY_prototype:
3183 UNI(OP_PROTOTYPE);
3184
79072805 3185 case KEY_push:
a0d0e21e 3186 LOP(OP_PUSH,XTERM);
79072805
LW		 3187
3188 case KEY_pop:
3189 UNI(OP_POP);
3190
a0d0e21e
LW		 3191 case KEY_pos:
3192 UNI(OP_POS);
3193
79072805 3194 case KEY_pack:
a0d0e21e 3195 LOP(OP_PACK,XTERM);
79072805
LW		 3196
3197 case KEY_package:
a0d0e21e 3198 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3199 OPERATOR(PACKAGE);
3200
3201 case KEY_pipe:
a0d0e21e 3202 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3203
3204 case KEY_q:
3205 s = scan_str(s);
3206 if (!s)
85e6fe83 3207 missingterm((char*)0);
79072805
LW		 3208 yylval.ival = OP_CONST;
3209 TERM(sublex_start());
3210
a0d0e21e
LW		 3211 case KEY_quotemeta:
3212 UNI(OP_QUOTEMETA);
3213
8990e307
LW		 3214 case KEY_qw:
3215 s = scan_str(s);
3216 if (!s)
85e6fe83 3217 missingterm((char*)0);
55497cff 3218 if (dowarn && SvLEN(lex_stuff)) {
3219 d = SvPV_force(lex_stuff, len);
3220 for (; len; --len, ++d) {
3221 if (*d == ',') {
3222 warn("Possible attempt to separate words with commas");
3223 break;
3224 }
3225 if (*d == '#') {
3226 warn("Possible attempt to put comments in qw() list");
3227 break;
3228 }
3229 }
3230 }
8990e307
LW		 3231 force_next(')');
3232 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3233 lex_stuff = Nullsv;
3234 force_next(THING);
3235 force_next(',');
3236 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3237 force_next(THING);
3238 force_next('(');
a0d0e21e
LW		 3239 yylval.ival = OP_SPLIT;
3240 CLINE;
3241 expect = XTERM;
3242 bufptr = s;
3243 last_lop = oldbufptr;
3244 last_lop_op = OP_SPLIT;
3245 return FUNC;
8990e307 3246
79072805
LW		 3247 case KEY_qq:
3248 s = scan_str(s);
3249 if (!s)
85e6fe83 3250 missingterm((char*)0);
a0d0e21e 3251 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3252 if (SvIVX(lex_stuff) == '\'')
3253 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3254 TERM(sublex_start());
3255
3256 case KEY_qx:
3257 s = scan_str(s);
3258 if (!s)
85e6fe83 3259 missingterm((char*)0);
79072805
LW		 3260 yylval.ival = OP_BACKTICK;
3261 set_csh();
3262 TERM(sublex_start());
3263
3264 case KEY_return:
3265 OLDLOP(OP_RETURN);
3266
3267 case KEY_require:
748a9306 3268 *tokenbuf = '\0';
a0d0e21e 3269 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3270 if (isIDFIRST(*tokenbuf))
89bfa8cd 3271 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3272 else if (*s == '<')
a0d0e21e 3273 yyerror("<> should be quotes");
463ee0b2 3274 UNI(OP_REQUIRE);
79072805
LW		 3275
3276 case KEY_reset:
3277 UNI(OP_RESET);
3278
3279 case KEY_redo:
a0d0e21e 3280 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3281 LOOPX(OP_REDO);
3282
3283 case KEY_rename:
a0d0e21e 3284 LOP(OP_RENAME,XTERM);
79072805
LW		 3285
3286 case KEY_rand:
3287 UNI(OP_RAND);
3288
3289 case KEY_rmdir:
3290 UNI(OP_RMDIR);
3291
3292 case KEY_rindex:
a0d0e21e 3293 LOP(OP_RINDEX,XTERM);
79072805
LW		 3294
3295 case KEY_read:
a0d0e21e 3296 LOP(OP_READ,XTERM);
79072805
LW		 3297
3298 case KEY_readdir:
3299 UNI(OP_READDIR);
3300
93a17b20
LW		 3301 case KEY_readline:
3302 set_csh();
3303 UNI(OP_READLINE);
3304
3305 case KEY_readpipe:
3306 set_csh();
3307 UNI(OP_BACKTICK);
3308
79072805
LW		 3309 case KEY_rewinddir:
3310 UNI(OP_REWINDDIR);
3311
3312 case KEY_recv:
a0d0e21e 3313 LOP(OP_RECV,XTERM);
79072805
LW		 3314
3315 case KEY_reverse:
a0d0e21e 3316 LOP(OP_REVERSE,XTERM);
79072805
LW		 3317
3318 case KEY_readlink:
3319 UNI(OP_READLINK);
3320
3321 case KEY_ref:
3322 UNI(OP_REF);
3323
3324 case KEY_s:
3325 s = scan_subst(s);
3326 if (yylval.opval)
3327 TERM(sublex_start());
3328 else
3329 TOKEN(1); /* force error */
3330
a0d0e21e
LW		 3331 case KEY_chomp:
3332 UNI(OP_CHOMP);
3333
79072805
LW		 3334 case KEY_scalar:
3335 UNI(OP_SCALAR);
3336
3337 case KEY_select:
a0d0e21e 3338 LOP(OP_SELECT,XTERM);
79072805
LW		 3339
3340 case KEY_seek:
a0d0e21e 3341 LOP(OP_SEEK,XTERM);
79072805
LW		 3342
3343 case KEY_semctl:
a0d0e21e 3344 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3345
3346 case KEY_semget:
a0d0e21e 3347 LOP(OP_SEMGET,XTERM);
79072805
LW		 3348
3349 case KEY_semop:
a0d0e21e 3350 LOP(OP_SEMOP,XTERM);
79072805
LW		 3351
3352 case KEY_send:
a0d0e21e 3353 LOP(OP_SEND,XTERM);
79072805
LW		 3354
3355 case KEY_setpgrp:
a0d0e21e 3356 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3357
3358 case KEY_setpriority:
a0d0e21e 3359 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3360
3361 case KEY_sethostent:
ff68c719 3362 UNI(OP_SHOSTENT);
79072805
LW		 3363
3364 case KEY_setnetent:
ff68c719 3365 UNI(OP_SNETENT);
79072805
LW		 3366
3367 case KEY_setservent:
ff68c719 3368 UNI(OP_SSERVENT);
79072805
LW		 3369
3370 case KEY_setprotoent:
ff68c719 3371 UNI(OP_SPROTOENT);
79072805
LW		 3372
3373 case KEY_setpwent:
3374 FUN0(OP_SPWENT);
3375
3376 case KEY_setgrent:
3377 FUN0(OP_SGRENT);
3378
3379 case KEY_seekdir:
a0d0e21e 3380 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3381
3382 case KEY_setsockopt:
a0d0e21e 3383 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3384
3385 case KEY_shift:
3386 UNI(OP_SHIFT);
3387
3388 case KEY_shmctl:
a0d0e21e 3389 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3390
3391 case KEY_shmget:
a0d0e21e 3392 LOP(OP_SHMGET,XTERM);
79072805
LW		 3393
3394 case KEY_shmread:
a0d0e21e 3395 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3396
3397 case KEY_shmwrite:
a0d0e21e 3398 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3399
3400 case KEY_shutdown:
a0d0e21e 3401 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3402
3403 case KEY_sin:
3404 UNI(OP_SIN);
3405
3406 case KEY_sleep:
3407 UNI(OP_SLEEP);
3408
3409 case KEY_socket:
a0d0e21e 3410 LOP(OP_SOCKET,XTERM);
79072805
LW		 3411
3412 case KEY_socketpair:
a0d0e21e 3413 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3414
3415 case KEY_sort:
3416 checkcomma(s,tokenbuf,"subroutine name");
3417 s = skipspace(s);
3418 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3419 croak("sort is now a reserved word");
3420 expect = XTERM;
a0d0e21e
LW		 3421 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3422 LOP(OP_SORT,XREF);
79072805
LW		 3423
3424 case KEY_split:
a0d0e21e 3425 LOP(OP_SPLIT,XTERM);
79072805
LW		 3426
3427 case KEY_sprintf:
a0d0e21e 3428 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3429
3430 case KEY_splice:
a0d0e21e 3431 LOP(OP_SPLICE,XTERM);
79072805
LW		 3432
3433 case KEY_sqrt:
3434 UNI(OP_SQRT);
3435
3436 case KEY_srand:
3437 UNI(OP_SRAND);
3438
3439 case KEY_stat:
3440 UNI(OP_STAT);
3441
3442 case KEY_study:
3443 sawstudy++;
3444 UNI(OP_STUDY);
3445
3446 case KEY_substr:
a0d0e21e 3447 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3448
3449 case KEY_format:
3450 case KEY_sub:
93a17b20 3451 really_sub:
79072805 3452 s = skipspace(s);
4633a7c4 3453
463ee0b2
LW		 3454 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3455 char tmpbuf[128];
4633a7c4 3456 expect = XBLOCK;
463ee0b2
LW		 3457 d = scan_word(s, tmpbuf, TRUE, &len);
3458 if (strchr(tmpbuf, ':'))
3459 sv_setpv(subname, tmpbuf);
3460 else {
3461 sv_setsv(subname,curstname);
8990e307 3462 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3463 sv_catpvn(subname,tmpbuf,len);
3464 }
a0d0e21e 3465 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3466 s = skipspace(s);
79072805 3467 }
4633a7c4
LW		 3468 else {
3469 expect = XTERMBLOCK;
79072805 3470 sv_setpv(subname,"?");
4633a7c4
LW		 3471 }
3472
3473 if (tmp == KEY_format) {
3474 s = skipspace(s);
3475 if (*s == '=')
3476 lex_formbrack = lex_brackets + 1;
3477 OPERATOR(FORMAT);
3478 }
79072805 3479
4633a7c4
LW		 3480 /* Look for a prototype */
3481 if (*s == '(') {
68dc0745 3482 char *p;
3483
4633a7c4
LW		 3484 s = scan_str(s);
3485 if (!s) {
3486 if (lex_stuff)
3487 SvREFCNT_dec(lex_stuff);
3488 lex_stuff = Nullsv;
3489 croak("Prototype not terminated");
3490 }
68dc0745 3491 /* strip spaces */
3492 d = SvPVX(lex_stuff);
3493 tmp = 0;
3494 for (p = d; *p; ++p) {
3495 if (!isSPACE(*p))
3496 d[tmp++] = *p;
3497 }
3498 d[tmp] = '\0';
3499 SvCUR(lex_stuff) = tmp;
3500
4633a7c4
LW		 3501 nexttoke++;
3502 nextval[1] = nextval[0];
3503 nexttype[1] = nexttype[0];
3504 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3505 nexttype[0] = THING;
3506 if (nexttoke == 1) {
3507 lex_defer = lex_state;
3508 lex_expect = expect;
3509 lex_state = LEX_KNOWNEXT;
3510 }
3511 lex_stuff = Nullsv;
3512 }
79072805 3513
4633a7c4
LW		 3514 if (*SvPV(subname,na) == '?') {
3515 sv_setpv(subname,"__ANON__");
3516 TOKEN(ANONSUB);
3517 }
3518 PREBLOCK(SUB);
79072805
LW		 3519
3520 case KEY_system:
3521 set_csh();
a0d0e21e 3522 LOP(OP_SYSTEM,XREF);
79072805
LW		 3523
3524 case KEY_symlink:
a0d0e21e 3525 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3526
3527 case KEY_syscall:
a0d0e21e 3528 LOP(OP_SYSCALL,XTERM);
79072805 3529
c07a80fd 3530 case KEY_sysopen:
3531 LOP(OP_SYSOPEN,XTERM);
3532
79072805 3533 case KEY_sysread:
a0d0e21e 3534 LOP(OP_SYSREAD,XTERM);
79072805 3535
137443ea 3536 case KEY_sysseek:
3537 LOP(OP_SYSSEEK,XTERM);
3538
79072805 3539 case KEY_syswrite:
a0d0e21e 3540 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3541
3542 case KEY_tr:
3543 s = scan_trans(s);
3544 TERM(sublex_start());
3545
3546 case KEY_tell:
3547 UNI(OP_TELL);
3548
3549 case KEY_telldir:
3550 UNI(OP_TELLDIR);
3551
463ee0b2 3552 case KEY_tie:
a0d0e21e 3553 LOP(OP_TIE,XTERM);
463ee0b2 3554
c07a80fd 3555 case KEY_tied:
3556 UNI(OP_TIED);
3557
79072805
LW		 3558 case KEY_time:
3559 FUN0(OP_TIME);
3560
3561 case KEY_times:
3562 FUN0(OP_TMS);
3563
3564 case KEY_truncate:
a0d0e21e 3565 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3566
3567 case KEY_uc:
3568 UNI(OP_UC);
3569
3570 case KEY_ucfirst:
3571 UNI(OP_UCFIRST);
3572
463ee0b2
LW		 3573 case KEY_untie:
3574 UNI(OP_UNTIE);
3575
79072805
LW		 3576 case KEY_until:
3577 yylval.ival = curcop->cop_line;
71be2cbc 3578 OPERATOR(UNTIL);
79072805
LW		 3579
3580 case KEY_unless:
3581 yylval.ival = curcop->cop_line;
71be2cbc 3582 OPERATOR(UNLESS);
79072805
LW		 3583
3584 case KEY_unlink:
a0d0e21e 3585 LOP(OP_UNLINK,XTERM);
79072805
LW		 3586
3587 case KEY_undef:
3588 UNI(OP_UNDEF);
3589
3590 case KEY_unpack:
a0d0e21e 3591 LOP(OP_UNPACK,XTERM);
79072805
LW		 3592
3593 case KEY_utime:
a0d0e21e 3594 LOP(OP_UTIME,XTERM);
79072805
LW		 3595
3596 case KEY_umask:
748a9306
LW		 3597 if (dowarn) {
3598 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3599 if (*d != '0' && isDIGIT(*d))
3600 yywarn("umask: argument is missing initial 0");
3601 }
79072805
LW		 3602 UNI(OP_UMASK);
3603
3604 case KEY_unshift:
a0d0e21e
LW		 3605 LOP(OP_UNSHIFT,XTERM);
3606
3607 case KEY_use:
3608 if (expect != XSTATE)
3609 yyerror("\"use\" not allowed in expression");
89bfa8cd 3610 s = skipspace(s);
3611 if(isDIGIT(*s)) {
3612 s = force_version(s);
3613 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3614 nextval[nexttoke].opval = Nullop;
3615 force_next(WORD);
3616 }
3617 }
3618 else {
3619 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3620 s = force_version(s);
3621 }
a0d0e21e
LW		 3622 yylval.ival = 1;
3623 OPERATOR(USE);
79072805
LW		 3624
3625 case KEY_values:
3626 UNI(OP_VALUES);
3627
3628 case KEY_vec:
3629 sawvec = TRUE;
a0d0e21e 3630 LOP(OP_VEC,XTERM);
79072805
LW		 3631
3632 case KEY_while:
3633 yylval.ival = curcop->cop_line;
71be2cbc 3634 OPERATOR(WHILE);
79072805
LW		 3635
3636 case KEY_warn:
a0d0e21e
LW		 3637 hints |= HINT_BLOCK_SCOPE;
3638 LOP(OP_WARN,XTERM);
79072805
LW		 3639
3640 case KEY_wait:
3641 FUN0(OP_WAIT);
3642
3643 case KEY_waitpid:
a0d0e21e 3644 LOP(OP_WAITPID,XTERM);
79072805
LW		 3645
3646 case KEY_wantarray:
3647 FUN0(OP_WANTARRAY);
3648
3649 case KEY_write:
85e6fe83 3650 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3651 UNI(OP_ENTERWRITE);
3652
3653 case KEY_x:
3654 if (expect == XOPERATOR)
3655 Mop(OP_REPEAT);
3656 check_uni();
3657 goto just_a_word;
3658
a0d0e21e
LW		 3659 case KEY_xor:
3660 yylval.ival = OP_XOR;
3661 OPERATOR(OROP);
3662
79072805
LW		 3663 case KEY_y:
3664 s = scan_trans(s);
3665 TERM(sublex_start());
3666 }
3667 }
3668}
3669
3670I32
3671keyword(d, len)
3672register char *d;
3673I32 len;
3674{
3675 switch (*d) {
3676 case '_':
3677 if (d[1] == '_') {
a0d0e21e 3678 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
68dc0745 3679 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3680 if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__;
e50aee73 3681 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3682 if (strEQ(d,"__END__")) return KEY___END__;
3683 }
3684 break;
8990e307
LW		 3685 case 'A':
3686 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3687 break;
79072805 3688 case 'a':
463ee0b2
LW		 3689 switch (len) {
3690 case 3:
a0d0e21e
LW		 3691 if (strEQ(d,"and")) return -KEY_and;
3692 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3693 break;
463ee0b2 3694 case 5:
a0d0e21e
LW		 3695 if (strEQ(d,"alarm")) return -KEY_alarm;
3696 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3697 break;
3698 case 6:
a0d0e21e 3699 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3700 break;
3701 }
79072805
LW		 3702 break;
3703 case 'B':
3704 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3705 break;
79072805 3706 case 'b':
a0d0e21e
LW		 3707 if (strEQ(d,"bless")) return -KEY_bless;
3708 if (strEQ(d,"bind")) return -KEY_bind;
3709 if (strEQ(d,"binmode")) return -KEY_binmode;
3710 break;
3711 case 'C':
3712 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3713 break;
3714 case 'c':
3715 switch (len) {
3716 case 3:
a0d0e21e
LW		 3717 if (strEQ(d,"cmp")) return -KEY_cmp;
3718 if (strEQ(d,"chr")) return -KEY_chr;
3719 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3720 break;
3721 case 4:
3722 if (strEQ(d,"chop")) return KEY_chop;
3723 break;
3724 case 5:
a0d0e21e
LW		 3725 if (strEQ(d,"close")) return -KEY_close;
3726 if (strEQ(d,"chdir")) return -KEY_chdir;
3727 if (strEQ(d,"chomp")) return KEY_chomp;
3728 if (strEQ(d,"chmod")) return -KEY_chmod;
3729 if (strEQ(d,"chown")) return -KEY_chown;
3730 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3731 break;
3732 case 6:
a0d0e21e
LW		 3733 if (strEQ(d,"chroot")) return -KEY_chroot;
3734 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3735 break;
3736 case 7:
a0d0e21e 3737 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3738 break;
3739 case 8:
a0d0e21e
LW		 3740 if (strEQ(d,"closedir")) return -KEY_closedir;
3741 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3742 break;
3743 }
3744 break;
ed6116ce
LW		 3745 case 'D':
3746 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3747 break;
79072805
LW		 3748 case 'd':
3749 switch (len) {
3750 case 2:
3751 if (strEQ(d,"do")) return KEY_do;
3752 break;
3753 case 3:
a0d0e21e 3754 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3755 break;
3756 case 4:
a0d0e21e 3757 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3758 break;
3759 case 6:
3760 if (strEQ(d,"delete")) return KEY_delete;
3761 break;
3762 case 7:
3763 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3764 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3765 break;
3766 case 8:
a0d0e21e 3767 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3768 break;
3769 }
3770 break;
3771 case 'E':
a0d0e21e 3772 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3773 if (strEQ(d,"END")) return KEY_END;
3774 break;
3775 case 'e':
3776 switch (len) {
3777 case 2:
a0d0e21e 3778 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3779 break;
3780 case 3:
a0d0e21e
LW		 3781 if (strEQ(d,"eof")) return -KEY_eof;
3782 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3783 break;
3784 case 4:
3785 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3786 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3787 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3788 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3789 if (strEQ(d,"each")) return KEY_each;
3790 break;
3791 case 5:
3792 if (strEQ(d,"elsif")) return KEY_elsif;
3793 break;
a0d0e21e
LW		 3794 case 6:
3795 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3796 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3797 break;
79072805 3798 case 8:
a0d0e21e
LW		 3799 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3800 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3801 break;
3802 case 9:
a0d0e21e 3803 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3804 break;
3805 case 10:
a0d0e21e
LW		 3806 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3807 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3808 break;
3809 case 11:
a0d0e21e 3810 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3811 break;
a687059c 3812 }
a687059c 3813 break;
79072805
LW		 3814 case 'f':
3815 switch (len) {
3816 case 3:
3817 if (strEQ(d,"for")) return KEY_for;
3818 break;
3819 case 4:
a0d0e21e 3820 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3821 break;
3822 case 5:
a0d0e21e
LW		 3823 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3824 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3825 break;
3826 case 6:
3827 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3828 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3829 break;
3830 case 7:
3831 if (strEQ(d,"foreach")) return KEY_foreach;
3832 break;
3833 case 8:
a0d0e21e 3834 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3835 break;
378cc40b 3836 }
a687059c 3837 break;
79072805
LW		 3838 case 'G':
3839 if (len == 2) {
a0d0e21e
LW		 3840 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3841 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3842 }
a687059c 3843 break;
79072805 3844 case 'g':
a687059c
LW		 3845 if (strnEQ(d,"get",3)) {
3846 d += 3;
3847 if (*d == 'p') {
79072805
LW		 3848 switch (len) {
3849 case 7:
a0d0e21e
LW		 3850 if (strEQ(d,"ppid")) return -KEY_getppid;
3851 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3852 break;
3853 case 8:
a0d0e21e
LW		 3854 if (strEQ(d,"pwent")) return -KEY_getpwent;
3855 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3856 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3857 break;
3858 case 11:
a0d0e21e
LW		 3859 if (strEQ(d,"peername")) return -KEY_getpeername;
3860 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3861 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3862 break;
3863 case 14:
a0d0e21e 3864 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3865 break;
3866 case 16:
a0d0e21e 3867 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3868 break;
3869 }
a687059c
LW		 3870 }
3871 else if (*d == 'h') {
a0d0e21e
LW		 3872 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3873 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3874 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3875 }
3876 else if (*d == 'n') {
a0d0e21e
LW		 3877 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3878 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3879 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3880 }
3881 else if (*d == 's') {
a0d0e21e
LW		 3882 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3883 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3884 if (strEQ(d,"servent")) return -KEY_getservent;
3885 if (strEQ(d,"sockname")) return -KEY_getsockname;
3886 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3887 }
3888 else if (*d == 'g') {
a0d0e21e
LW		 3889 if (strEQ(d,"grent")) return -KEY_getgrent;
3890 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3891 if (strEQ(d,"grgid")) return -KEY_getgrgid;