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[perl5.git] / toke.c
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a0d0e21e 1/* toke.c
a687059c 2 *
a0d0e21e 3 * Copyright (c) 1991-1994, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
378cc40b 7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "It all comes from here, the stench and the peril." --Frodo
378cc40b
LW		 12 */
13
14#include "EXTERN.h"
15#include "perl.h"
378cc40b 16
a0d0e21e
LW		 17static void check_uni _((void));
18static void force_next _((I32 type));
89bfa8cd 19static char *force_version _((char *start));
a0d0e21e
LW		 20static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick));
21static SV *q _((SV *sv));
22static char *scan_const _((char *start));
23static char *scan_formline _((char *s));
24static char *scan_heredoc _((char *s));
25static char *scan_ident _((char *s, char *send, char *dest, I32 ck_uni));
26static char *scan_inputsymbol _((char *start));
27static char *scan_pat _((char *start));
28static char *scan_str _((char *start));
29static char *scan_subst _((char *start));
30static char *scan_trans _((char *start));
31static char *scan_word _((char *s, char *dest, int allow_package, STRLEN *slp));
32static char *skipspace _((char *s));
33static void checkcomma _((char *s, char *name, char *what));
34static void force_ident _((char *s, int kind));
35static void incline _((char *s));
36static int intuit_method _((char *s, GV *gv));
37static int intuit_more _((char *s));
38static I32 lop _((I32 f, expectation x, char *s));
39static void missingterm _((char *s));
40static void no_op _((char *what, char *s));
41static void set_csh _((void));
42static I32 sublex_done _((void));
55497cff 43static I32 sublex_push _((void));
a0d0e21e
LW		 44static I32 sublex_start _((void));
45#ifdef CRIPPLED_CC
46static int uni _((I32 f, char *s));
47#endif
fd049845 48static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append));
6d5fb7e3 49static void restore_rsfp _((void *f));
2f3197b3 50
fd049845 51static char *linestart; /* beg. of most recently read line */
52
bbce6d69 53static char pending_ident; /* pending identifier lookup */
54
55497cff 55static struct {
56 I32 super_state; /* lexer state to save */
57 I32 sub_inwhat; /* "lex_inwhat" to use */
58 OP *sub_op; /* "lex_op" to use */
59} sublex_info;
60
79072805
LW		 61/* The following are arranged oddly so that the guard on the switch statement
62 * can get by with a single comparison (if the compiler is smart enough).
63 */
64
55497cff 65#define LEX_NORMAL 10
66#define LEX_INTERPNORMAL 9
67#define LEX_INTERPCASEMOD 8
68#define LEX_INTERPPUSH 7
69#define LEX_INTERPSTART 6
70#define LEX_INTERPEND 5
71#define LEX_INTERPENDMAYBE 4
72#define LEX_INTERPCONCAT 3
73#define LEX_INTERPCONST 2
74#define LEX_FORMLINE 1
75#define LEX_KNOWNEXT 0
79072805 76
395c3793
LW		 77#ifdef I_FCNTL
78#include <fcntl.h>
79#endif
fe14fcc3
LW		 80#ifdef I_SYS_FILE
81#include <sys/file.h>
82#endif
395c3793 83
a790bc05 84/* XXX If this causes problems, set i_unistd=undef in the hint file. */
85#ifdef I_UNISTD
86# include <unistd.h> /* Needed for execv() */
87#endif
88
89
79072805
LW		 90#ifdef ff_next
91#undef ff_next
d48672a2
LW		 92#endif
93
79072805 94#include "keywords.h"
fe14fcc3 95
ae986130
LW		 96#ifdef CLINE
97#undef CLINE
98#endif
79072805 99#define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline))
378cc40b 100
79072805
LW		 101#define TOKEN(retval) return (bufptr = s,(int)retval)
102#define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval)
a0d0e21e 103#define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval))
79072805 104#define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval)
a0d0e21e 105#define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval)
79072805
LW		 106#define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval)
107#define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval)
463ee0b2 108#define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX)
79072805
LW		 109#define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP)
110#define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0)
111#define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1)
a0d0e21e
LW		 112#define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP))
113#define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP))
114#define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP))
115#define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP))
79072805 116#define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP)
a0d0e21e
LW		 117#define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP))
118#define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP))
79072805
LW		 119#define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP)
120#define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP)
2f3197b3 121
a687059c
LW		 122/* This bit of chicanery makes a unary function followed by
123 * a parenthesis into a function with one argument, highest precedence.
124 */
2f3197b3 125#define UNI(f) return(yylval.ival = f, \
79072805 126 expect = XTERM, \
2f3197b3
LW		 127 bufptr = s, \
128 last_uni = oldbufptr, \
a0d0e21e 129 last_lop_op = f, \
a687059c
LW		 130 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
131
79072805
LW		 132#define UNIBRACK(f) return(yylval.ival = f, \
133 bufptr = s, \
134 last_uni = oldbufptr, \
135 (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) )
136
9f68db38 137/* grandfather return to old style */
79072805
LW		 138#define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP)
139
a0d0e21e
LW		 140static int
141ao(toketype)
142int toketype;
143{
144 if (*bufptr == '=') {
145 bufptr++;
146 if (toketype == ANDAND)
147 yylval.ival = OP_ANDASSIGN;
148 else if (toketype == OROR)
149 yylval.ival = OP_ORASSIGN;
150 toketype = ASSIGNOP;
151 }
152 return toketype;
153}
154
8990e307
LW		 155static void
156no_op(what, s)
463ee0b2 157char *what;
8990e307 158char *s;
463ee0b2 159{
8990e307 160 char tmpbuf[128];
748a9306 161 char *oldbp = bufptr;
fd049845 162 bool is_first = (oldbufptr == linestart);
8990e307
LW		 163 bufptr = s;
164 sprintf(tmpbuf, "%s found where operator expected", what);
165 yywarn(tmpbuf);
748a9306 166 if (is_first)
a0d0e21e 167 warn("\t(Missing semicolon on previous line?)\n");
748a9306
LW		 168 else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) {
169 char *t;
170 for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ;
171 if (t < bufptr && isSPACE(*t))
172 warn("\t(Do you need to predeclare %.*s?)\n",
173 t - oldoldbufptr, oldoldbufptr);
174
175 }
176 else
177 warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp);
178 bufptr = oldbp;
8990e307
LW		 179}
180
181static void
182missingterm(s)
183char *s;
184{
185 char tmpbuf[3];
186 char q;
187 if (s) {
188 char *nl = strrchr(s,'\n');
189 if (nl)
190 *nl = '\0';
191 }
192 else if (multi_close < 32 || multi_close == 127) {
193 *tmpbuf = '^';
bbce6d69 194 tmpbuf[1] = toCTRL(multi_close);
8990e307
LW		 195 s = "\\n";
196 tmpbuf[2] = '\0';
197 s = tmpbuf;
198 }
199 else {
200 *tmpbuf = multi_close;
201 tmpbuf[1] = '\0';
202 s = tmpbuf;
203 }
204 q = strchr(s,'"') ? '\'' : '"';
205 croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q);
463ee0b2 206}
79072805
LW		 207
208void
a0d0e21e
LW		 209deprecate(s)
210char *s;
211{
212 if (dowarn)
213 warn("Use of %s is deprecated", s);
214}
215
216static void
217depcom()
218{
219 deprecate("comma-less variable list");
220}
221
222void
8990e307
LW		 223lex_start(line)
224SV *line;
79072805 225{
8990e307
LW		 226 char *s;
227 STRLEN len;
228
55497cff 229 SAVEI32(lex_dojoin);
230 SAVEI32(lex_brackets);
231 SAVEI32(lex_fakebrack);
232 SAVEI32(lex_casemods);
233 SAVEI32(lex_starts);
234 SAVEI32(lex_state);
a0d0e21e 235 SAVESPTR(lex_inpat);
55497cff 236 SAVEI32(lex_inwhat);
237 SAVEI16(curcop->cop_line);
85e6fe83
LW		 238 SAVEPPTR(bufptr);
239 SAVEPPTR(bufend);
240 SAVEPPTR(oldbufptr);
241 SAVEPPTR(oldoldbufptr);
fd049845 242 SAVEPPTR(linestart);
463ee0b2 243 SAVESPTR(linestr);
85e6fe83 244 SAVEPPTR(lex_brackstack);
a0d0e21e 245 SAVEPPTR(lex_casestack);
6d5fb7e3 246 SAVEDESTRUCTOR(restore_rsfp, rsfp);
463ee0b2 247
79072805
LW		 248 lex_state = LEX_NORMAL;
249 lex_defer = 0;
8990e307 250 expect = XSTATE;
79072805
LW		 251 lex_brackets = 0;
252 lex_fakebrack = 0;
8990e307 253 New(899, lex_brackstack, 120, char);
a0d0e21e 254 New(899, lex_casestack, 12, char);
8990e307 255 SAVEFREEPV(lex_brackstack);
a0d0e21e 256 SAVEFREEPV(lex_casestack);
79072805 257 lex_casemods = 0;
a0d0e21e 258 *lex_casestack = '\0';
79072805
LW		 259 lex_dojoin = 0;
260 lex_starts = 0;
261 if (lex_stuff)
8990e307 262 SvREFCNT_dec(lex_stuff);
79072805
LW		 263 lex_stuff = Nullsv;
264 if (lex_repl)
8990e307 265 SvREFCNT_dec(lex_repl);
79072805
LW		 266 lex_repl = Nullsv;
267 lex_inpat = 0;
268 lex_inwhat = 0;
8990e307
LW		 269 linestr = line;
270 if (SvREADONLY(linestr))
271 linestr = sv_2mortal(newSVsv(linestr));
272 s = SvPV(linestr, len);
273 if (len && s[len-1] != ';') {
a0d0e21e 274 if (!(SvFLAGS(linestr) & SVs_TEMP))
8990e307
LW		 275 linestr = sv_2mortal(newSVsv(linestr));
276 sv_catpvn(linestr, "\n;", 2);
277 }
278 SvTEMP_off(linestr);
fd049845 279 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
79072805 280 bufend = bufptr + SvCUR(linestr);
c07a80fd 281 SvREFCNT_dec(rs);
282 rs = newSVpv("\n", 1);
8990e307 283 rsfp = 0;
79072805 284}
a687059c 285
463ee0b2
LW		 286void
287lex_end()
288{
6ca21dd3 289 doextract = FALSE;
463ee0b2
LW		 290}
291
292static void
6d5fb7e3
CS		 293restore_rsfp(f)
294void *f;
295{
760ac839 296 PerlIO *fp = (PerlIO*)f;
6d5fb7e3 297
760ac839
LW		 298 if (rsfp == PerlIO_stdin())
299 PerlIO_clearerr(rsfp);
a5f75d66 300 else if (rsfp && (rsfp != fp))
760ac839 301 PerlIO_close(rsfp);
6d5fb7e3
CS		 302 rsfp = fp;
303}
304
305static void
463ee0b2
LW		 306incline(s)
307char *s;
308{
309 char *t;
310 char *n;
311 char ch;
312 int sawline = 0;
313
314 curcop->cop_line++;
315 if (*s++ != '#')
316 return;
317 while (*s == ' ' || *s == '\t') s++;
318 if (strnEQ(s, "line ", 5)) {
319 s += 5;
320 sawline = 1;
321 }
322 if (!isDIGIT(*s))
323 return;
324 n = s;
325 while (isDIGIT(*s))
326 s++;
327 while (*s == ' ' || *s == '\t')
328 s++;
329 if (*s == '"' && (t = strchr(s+1, '"')))
330 s++;
331 else {
332 if (!sawline)
333 return; /* false alarm */
334 for (t = s; !isSPACE(*t); t++) ;
335 }
336 ch = *t;
337 *t = '\0';
338 if (t - s > 0)
339 curcop->cop_filegv = gv_fetchfile(s);
340 else
341 curcop->cop_filegv = gv_fetchfile(origfilename);
342 *t = ch;
343 curcop->cop_line = atoi(n)-1;
344}
345
8990e307 346static char *
a687059c
LW		 347skipspace(s)
348register char *s;
349{
85e6fe83 350 if (lex_formbrack && lex_brackets <= lex_formbrack) {
463ee0b2
LW		 351 while (s < bufend && (*s == ' ' || *s == '\t'))
352 s++;
353 return s;
354 }
355 for (;;) {
fd049845 356 STRLEN prevlen;
463ee0b2
LW		 357 while (s < bufend && isSPACE(*s))
358 s++;
359 if (s < bufend && *s == '#') {
360 while (s < bufend && *s != '\n')
361 s++;
362 if (s < bufend)
363 s++;
364 }
a0d0e21e 365 if (s < bufend || !rsfp || lex_state != LEX_NORMAL)
463ee0b2 366 return s;
fd049845 367 if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) {
a0d0e21e
LW		 368 if (minus_n || minus_p) {
369 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
370 sv_catpv(linestr,";}");
371 minus_n = minus_p = 0;
372 }
373 else
374 sv_setpv(linestr,";");
fd049845 375 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 376 bufend = SvPVX(linestr) + SvCUR(linestr);
377 if (preprocess && !in_eval)
8990e307 378 (void)my_pclose(rsfp);
760ac839
LW		 379 else if ((PerlIO*)rsfp == PerlIO_stdin())
380 PerlIO_clearerr(rsfp);
8990e307 381 else
760ac839 382 (void)PerlIO_close(rsfp);
8990e307 383 rsfp = Nullfp;
463ee0b2
LW		 384 return s;
385 }
fd049845 386 linestart = bufptr = s + prevlen;
387 bufend = s + SvCUR(linestr);
388 s = bufptr;
a0d0e21e 389 incline(s);
8990e307
LW		 390 if (perldb && curstash != debstash) {
391 SV *sv = NEWSV(85,0);
392
393 sv_upgrade(sv, SVt_PVMG);
fd049845 394 sv_setpvn(sv,bufptr,bufend-bufptr);
8990e307
LW		 395 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
396 }
463ee0b2 397 }
a687059c 398}
378cc40b 399
8990e307 400static void
2f3197b3
LW		 401check_uni() {
402 char *s;
403 char ch;
a0d0e21e 404 char *t;
2f3197b3
LW		 405
406 if (oldoldbufptr != last_uni)
407 return;
408 while (isSPACE(*last_uni))
409 last_uni++;
e334a159 410 for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ;
a0d0e21e
LW		 411 if ((t = strchr(s, '(')) && t < bufptr)
412 return;
2f3197b3
LW		 413 ch = *s;
414 *s = '\0';
415 warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni);
416 *s = ch;
417}
418
ffed7fef
LW		 419#ifdef CRIPPLED_CC
420
421#undef UNI
ffed7fef 422#define UNI(f) return uni(f,s)
ffed7fef 423
8990e307 424static int
ffed7fef 425uni(f,s)
79072805 426I32 f;
ffed7fef
LW		 427char *s;
428{
429 yylval.ival = f;
79072805 430 expect = XTERM;
ffed7fef 431 bufptr = s;
2f3197b3 432 last_uni = oldbufptr;
a0d0e21e 433 last_lop_op = f;
ffed7fef
LW		 434 if (*s == '(')
435 return FUNC1;
436 s = skipspace(s);
437 if (*s == '(')
438 return FUNC1;
439 else
440 return UNIOP;
441}
442
a0d0e21e
LW		 443#endif /* CRIPPLED_CC */
444
445#define LOP(f,x) return lop(f,x,s)
446
8990e307 447static I32
a0d0e21e 448lop(f,x,s)
79072805 449I32 f;
a0d0e21e 450expectation x;
ffed7fef
LW		 451char *s;
452{
79072805 453 yylval.ival = f;
35c8bce7 454 CLINE;
a0d0e21e 455 expect = x;
79072805 456 bufptr = s;
8990e307
LW		 457 last_lop = oldbufptr;
458 last_lop_op = f;
a0d0e21e
LW		 459 if (nexttoke)
460 return LSTOP;
79072805
LW		 461 if (*s == '(')
462 return FUNC;
463 s = skipspace(s);
464 if (*s == '(')
465 return FUNC;
466 else
467 return LSTOP;
468}
469
8990e307 470static void
79072805
LW		 471force_next(type)
472I32 type;
473{
474 nexttype[nexttoke] = type;
475 nexttoke++;
476 if (lex_state != LEX_KNOWNEXT) {
477 lex_defer = lex_state;
463ee0b2 478 lex_expect = expect;
79072805
LW		 479 lex_state = LEX_KNOWNEXT;
480 }
481}
482
8990e307 483static char *
a0d0e21e 484force_word(start,token,check_keyword,allow_pack,allow_tick)
463ee0b2 485register char *start;
79072805 486int token;
463ee0b2 487int check_keyword;
a0d0e21e 488int allow_pack;
463ee0b2 489int allow_tick;
79072805 490{
463ee0b2
LW		 491 register char *s;
492 STRLEN len;
493
494 start = skipspace(start);
495 s = start;
a0d0e21e
LW		 496 if (isIDFIRST(*s) ||
497 (allow_pack && *s == ':') ||
498 (allow_tick && *s == '\'') )
499 {
500 s = scan_word(s, tokenbuf, allow_pack, &len);
463ee0b2
LW		 501 if (check_keyword && keyword(tokenbuf, len))
502 return start;
503 if (token == METHOD) {
504 s = skipspace(s);
505 if (*s == '(')
506 expect = XTERM;
507 else {
508 expect = XOPERATOR;
509 force_next(')');
510 force_next('(');
511 }
79072805 512 }
463ee0b2 513 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0));
8990e307 514 nextval[nexttoke].opval->op_private |= OPpCONST_BARE;
79072805
LW		 515 force_next(token);
516 }
517 return s;
518}
519
8990e307 520static void
a0d0e21e 521force_ident(s, kind)
79072805 522register char *s;
a0d0e21e 523int kind;
79072805
LW		 524{
525 if (s && *s) {
748a9306
LW		 526 OP* op = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0));
527 nextval[nexttoke].opval = op;
79072805 528 force_next(WORD);
748a9306
LW		 529 if (kind) {
530 op->op_private = OPpCONST_ENTERED;
55497cff 531 /* XXX see note in pp_entereval() for why we forgo typo
532 warnings if the symbol must be introduced in an eval.
533 GSAR 96-10-12 */
534 gv_fetchpv(s, in_eval ? GV_ADDMULTI : TRUE,
a0d0e21e
LW		 535 kind == '$' ? SVt_PV :
536 kind == '@' ? SVt_PVAV :
537 kind == '%' ? SVt_PVHV :
538 SVt_PVGV
539 );
748a9306 540 }
79072805
LW		 541 }
542}
543
89bfa8cd 544static char *
545force_version(s)
546char *s;
547{
548 OP *version = Nullop;
549
550 s = skipspace(s);
551
552 /* default VERSION number -- GBARR */
553
554 if(isDIGIT(*s)) {
555 char *d;
556 int c;
55497cff 557 for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++);
89bfa8cd 558 if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') {
559 s = scan_num(s);
560 /* real VERSION number -- GBARR */
561 version = yylval.opval;
562 }
563 }
564
565 /* NOTE: The parser sees the package name and the VERSION swapped */
566 nextval[nexttoke].opval = version;
567 force_next(WORD);
568
569 return (s);
570}
571
8990e307 572static SV *
79072805
LW		 573q(sv)
574SV *sv;
575{
576 register char *s;
577 register char *send;
578 register char *d;
463ee0b2 579 STRLEN len;
79072805
LW		 580
581 if (!SvLEN(sv))
582 return sv;
583
a0d0e21e 584 s = SvPV_force(sv, len);
748a9306
LW		 585 if (SvIVX(sv) == -1)
586 return sv;
463ee0b2 587 send = s + len;
79072805
LW		 588 while (s < send && *s != '\\')
589 s++;
590 if (s == send)
591 return sv;
592 d = s;
79072805
LW		 593 while (s < send) {
594 if (*s == '\\') {
a0d0e21e 595 if (s + 1 < send && (s[1] == '\\'))
79072805
LW		 596 s++; /* all that, just for this */
597 }
598 *d++ = *s++;
599 }
600 *d = '\0';
463ee0b2 601 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 602
603 return sv;
604}
605
8990e307 606static I32
79072805
LW		 607sublex_start()
608{
609 register I32 op_type = yylval.ival;
79072805
LW		 610
611 if (op_type == OP_NULL) {
612 yylval.opval = lex_op;
613 lex_op = Nullop;
614 return THING;
615 }
616 if (op_type == OP_CONST || op_type == OP_READLINE) {
617 yylval.opval = (OP*)newSVOP(op_type, 0, q(lex_stuff));
618 lex_stuff = Nullsv;
619 return THING;
620 }
621
55497cff 622 sublex_info.super_state = lex_state;
623 sublex_info.sub_inwhat = op_type;
624 sublex_info.sub_op = lex_op;
625 lex_state = LEX_INTERPPUSH;
626
627 expect = XTERM;
628 if (lex_op) {
629 yylval.opval = lex_op;
630 lex_op = Nullop;
631 return PMFUNC;
632 }
633 else
634 return FUNC;
635}
636
637static I32
638sublex_push()
639{
79072805 640 push_scope();
55497cff 641
642 lex_state = sublex_info.super_state;
643 SAVEI32(lex_dojoin);
644 SAVEI32(lex_brackets);
645 SAVEI32(lex_fakebrack);
646 SAVEI32(lex_casemods);
647 SAVEI32(lex_starts);
648 SAVEI32(lex_state);
a0d0e21e 649 SAVESPTR(lex_inpat);
55497cff 650 SAVEI32(lex_inwhat);
651 SAVEI16(curcop->cop_line);
85e6fe83
LW		 652 SAVEPPTR(bufptr);
653 SAVEPPTR(oldbufptr);
654 SAVEPPTR(oldoldbufptr);
fd049845 655 SAVEPPTR(linestart);
79072805 656 SAVESPTR(linestr);
85e6fe83 657 SAVEPPTR(lex_brackstack);
a0d0e21e 658 SAVEPPTR(lex_casestack);
79072805
LW		 659
660 linestr = lex_stuff;
661 lex_stuff = Nullsv;
662
fd049845 663 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 664 bufend += SvCUR(linestr);
8990e307 665 SAVEFREESV(linestr);
79072805
LW		 666
667 lex_dojoin = FALSE;
668 lex_brackets = 0;
669 lex_fakebrack = 0;
8990e307 670 New(899, lex_brackstack, 120, char);
a0d0e21e 671 New(899, lex_casestack, 12, char);
8990e307 672 SAVEFREEPV(lex_brackstack);
a0d0e21e 673 SAVEFREEPV(lex_casestack);
79072805 674 lex_casemods = 0;
a0d0e21e 675 *lex_casestack = '\0';
79072805
LW		 676 lex_starts = 0;
677 lex_state = LEX_INTERPCONCAT;
678 curcop->cop_line = multi_start;
679
55497cff 680 lex_inwhat = sublex_info.sub_inwhat;
681 if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST)
682 lex_inpat = sublex_info.sub_op;
79072805 683 else
55497cff 684 lex_inpat = Nullop;
79072805 685
55497cff 686 return '(';
79072805
LW		 687}
688
8990e307 689static I32
79072805
LW		 690sublex_done()
691{
692 if (!lex_starts++) {
693 expect = XOPERATOR;
93a17b20 694 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0));
79072805
LW		 695 return THING;
696 }
697
698 if (lex_casemods) { /* oops, we've got some unbalanced parens */
699 lex_state = LEX_INTERPCASEMOD;
700 return yylex();
701 }
702
79072805
LW		 703 /* Is there a right-hand side to take care of? */
704 if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) {
705 linestr = lex_repl;
706 lex_inpat = 0;
fd049845 707 bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr);
79072805 708 bufend += SvCUR(linestr);
8990e307 709 SAVEFREESV(linestr);
79072805
LW		 710 lex_dojoin = FALSE;
711 lex_brackets = 0;
712 lex_fakebrack = 0;
713 lex_casemods = 0;
a0d0e21e 714 *lex_casestack = '\0';
79072805
LW		 715 lex_starts = 0;
716 if (SvCOMPILED(lex_repl)) {
717 lex_state = LEX_INTERPNORMAL;
718 lex_starts++;
719 }
720 else
721 lex_state = LEX_INTERPCONCAT;
722 lex_repl = Nullsv;
723 return ',';
ffed7fef
LW		 724 }
725 else {
79072805 726 pop_scope();
463ee0b2 727 bufend = SvPVX(linestr);
79072805
LW		 728 bufend += SvCUR(linestr);
729 expect = XOPERATOR;
730 return ')';
ffed7fef
LW		 731 }
732}
733
8990e307 734static char *
79072805
LW		 735scan_const(start)
736char *start;
737{
738 register char *send = bufend;
739 SV *sv = NEWSV(93, send - start);
740 register char *s = start;
463ee0b2 741 register char *d = SvPVX(sv);
79072805
LW		 742 bool dorange = FALSE;
743 I32 len;
744 char *leave =
745 lex_inpat
748a9306 746 ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#"
79072805
LW		 747 : (lex_inwhat & OP_TRANS)
748 ? ""
749 : "";
750
751 while (s < send || dorange) {
752 if (lex_inwhat == OP_TRANS) {
753 if (dorange) {
754 I32 i;
755 I32 max;
463ee0b2 756 i = d - SvPVX(sv);
79072805 757 SvGROW(sv, SvLEN(sv) + 256);
463ee0b2 758 d = SvPVX(sv) + i;
79072805 759 d -= 2;
91b7def8 760 max = (U8)d[1];
761 for (i = (U8)*d; i <= max; i++)
79072805
LW		 762 *d++ = i;
763 dorange = FALSE;
764 continue;
765 }
766 else if (*s == '-' && s+1 < send && s != start) {
767 dorange = TRUE;
768 s++;
769 }
770 }
748a9306
LW		 771 else if (*s == '(' && lex_inpat && s[1] == '?' && s[2] == '#') {
772 while (s < send && *s != ')')
773 *d++ = *s++;
774 }
775 else if (*s == '#' && lex_inpat &&
776 ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) {
777 while (s+1 < send && *s != '\n')
778 *d++ = *s++;
779 }
a0d0e21e 780 else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1])))
79072805
LW		 781 break;
782 else if (*s == '$') {
783 if (!lex_inpat) /* not a regexp, so $ must be var */
784 break;
a0d0e21e 785 if (s + 1 < send && !strchr(")| \n\t", s[1]))
79072805
LW		 786 break; /* in regexp, $ might be tail anchor */
787 }
788 if (*s == '\\' && s+1 < send) {
789 s++;
93a17b20 790 if (*s && strchr(leave, *s)) {
79072805
LW		 791 *d++ = '\\';
792 *d++ = *s++;
793 continue;
794 }
795 if (lex_inwhat == OP_SUBST && !lex_inpat &&
a0d0e21e 796 isDIGIT(*s) && *s != '0' && !isDIGIT(s[1]))
79072805 797 {
a0d0e21e
LW		 798 if (dowarn)
799 warn("\\%c better written as $%c", *s, *s);
79072805
LW		 800 *--s = '$';
801 break;
802 }
a0d0e21e 803 if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) {
79072805
LW		 804 --s;
805 break;
806 }
807 switch (*s) {
808 case '-':
809 if (lex_inwhat == OP_TRANS) {
810 *d++ = *s++;
811 continue;
812 }
813 /* FALL THROUGH */
814 default:
815 *d++ = *s++;
816 continue;
817 case '0': case '1': case '2': case '3':
818 case '4': case '5': case '6': case '7':
819 *d++ = scan_oct(s, 3, &len);
820 s += len;
821 continue;
822 case 'x':
823 *d++ = scan_hex(++s, 2, &len);
824 s += len;
825 continue;
826 case 'c':
827 s++;
bbce6d69 828 len = *s++;
829 *d++ = toCTRL(len);
79072805
LW		 830 continue;
831 case 'b':
832 *d++ = '\b';
833 break;
834 case 'n':
835 *d++ = '\n';
836 break;
837 case 'r':
838 *d++ = '\r';
839 break;
840 case 'f':
841 *d++ = '\f';
842 break;
843 case 't':
844 *d++ = '\t';
845 break;
846 case 'e':
847 *d++ = '\033';
848 break;
849 case 'a':
850 *d++ = '\007';
851 break;
852 }
853 s++;
854 continue;
855 }
856 *d++ = *s++;
857 }
858 *d = '\0';
463ee0b2 859 SvCUR_set(sv, d - SvPVX(sv));
79072805
LW		 860 SvPOK_on(sv);
861
862 if (SvCUR(sv) + 5 < SvLEN(sv)) {
863 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 864 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 865 }
866 if (s > bufptr)
867 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
868 else
8990e307 869 SvREFCNT_dec(sv);
79072805
LW		 870 return s;
871}
872
873/* This is the one truly awful dwimmer necessary to conflate C and sed. */
8990e307 874static int
79072805
LW		 875intuit_more(s)
876register char *s;
877{
878 if (lex_brackets)
879 return TRUE;
880 if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{'))
881 return TRUE;
882 if (*s != '{' && *s != '[')
883 return FALSE;
884 if (!lex_inpat)
885 return TRUE;
886
887 /* In a pattern, so maybe we have {n,m}. */
888 if (*s == '{') {
889 s++;
890 if (!isDIGIT(*s))
891 return TRUE;
892 while (isDIGIT(*s))
893 s++;
894 if (*s == ',')
895 s++;
896 while (isDIGIT(*s))
897 s++;
898 if (*s == '}')
899 return FALSE;
900 return TRUE;
901
902 }
903
904 /* On the other hand, maybe we have a character class */
905
906 s++;
907 if (*s == ']' || *s == '^')
908 return FALSE;
909 else {
910 int weight = 2; /* let's weigh the evidence */
911 char seen[256];
912 unsigned char un_char = 0, last_un_char;
93a17b20 913 char *send = strchr(s,']');
79072805
LW		 914 char tmpbuf[512];
915
916 if (!send) /* has to be an expression */
917 return TRUE;
918
919 Zero(seen,256,char);
920 if (*s == '$')
921 weight -= 3;
922 else if (isDIGIT(*s)) {
923 if (s[1] != ']') {
924 if (isDIGIT(s[1]) && s[2] == ']')
925 weight -= 10;
926 }
927 else
928 weight -= 100;
929 }
930 for (; s < send; s++) {
931 last_un_char = un_char;
932 un_char = (unsigned char)*s;
933 switch (*s) {
934 case '@':
935 case '&':
936 case '$':
937 weight -= seen[un_char] * 10;
938 if (isALNUM(s[1])) {
939 scan_ident(s,send,tmpbuf,FALSE);
a0d0e21e 940 if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV))
79072805
LW		 941 weight -= 100;
942 else
943 weight -= 10;
944 }
945 else if (*s == '$' && s[1] &&
93a17b20
LW		 946 strchr("[#!%*<>()-=",s[1])) {
947 if (/*{*/ strchr("])} =",s[2]))
79072805
LW		 948 weight -= 10;
949 else
950 weight -= 1;
951 }
952 break;
953 case '\\':
954 un_char = 254;
955 if (s[1]) {
93a17b20 956 if (strchr("wds]",s[1]))
79072805
LW		 957 weight += 100;
958 else if (seen['\''] || seen['"'])
959 weight += 1;
93a17b20 960 else if (strchr("rnftbxcav",s[1]))
79072805
LW		 961 weight += 40;
962 else if (isDIGIT(s[1])) {
963 weight += 40;
964 while (s[1] && isDIGIT(s[1]))
965 s++;
966 }
967 }
968 else
969 weight += 100;
970 break;
971 case '-':
972 if (s[1] == '\\')
973 weight += 50;
93a17b20 974 if (strchr("aA01! ",last_un_char))
79072805 975 weight += 30;
93a17b20 976 if (strchr("zZ79~",s[1]))
79072805
LW		 977 weight += 30;
978 break;
979 default:
93a17b20 980 if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) &&
79072805
LW		 981 isALPHA(*s) && s[1] && isALPHA(s[1])) {
982 char *d = tmpbuf;
983 while (isALPHA(*s))
984 *d++ = *s++;
985 *d = '\0';
986 if (keyword(tmpbuf, d - tmpbuf))
987 weight -= 150;
988 }
989 if (un_char == last_un_char + 1)
990 weight += 5;
991 weight -= seen[un_char];
992 break;
993 }
994 seen[un_char]++;
995 }
996 if (weight >= 0) /* probably a character class */
997 return FALSE;
998 }
999
1000 return TRUE;
1001}
ffed7fef 1002
a0d0e21e
LW		 1003static int
1004intuit_method(start,gv)
1005char *start;
1006GV *gv;
1007{
1008 char *s = start + (*start == '$');
1009 char tmpbuf[1024];
1010 STRLEN len;
1011 GV* indirgv;
1012
1013 if (gv) {
1014 if (GvIO(gv))
1015 return 0;
1016 if (!GvCV(gv))
1017 gv = 0;
1018 }
1019 s = scan_word(s, tmpbuf, TRUE, &len);
1020 if (*start == '$') {
1021 if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf))
1022 return 0;
1023 s = skipspace(s);
1024 bufptr = start;
1025 expect = XREF;
1026 return *s == '(' ? FUNCMETH : METHOD;
1027 }
1028 if (!keyword(tmpbuf, len)) {
1029 indirgv = gv_fetchpv(tmpbuf,FALSE, SVt_PVCV);
1030 if (indirgv && GvCV(indirgv))
1031 return 0;
1032 /* filehandle or package name makes it a method */
89bfa8cd 1033 if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) {
a0d0e21e 1034 s = skipspace(s);
55497cff 1035 if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>')
1036 return 0; /* no assumptions -- "=>" quotes bearword */
a0d0e21e
LW		 1037 nextval[nexttoke].opval =
1038 (OP*)newSVOP(OP_CONST, 0,
1039 newSVpv(tmpbuf,0));
1040 nextval[nexttoke].opval->op_private =
1041 OPpCONST_BARE;
1042 expect = XTERM;
1043 force_next(WORD);
1044 bufptr = s;
1045 return *s == '(' ? FUNCMETH : METHOD;
1046 }
1047 }
1048 return 0;
1049}
1050
1051static char*
1052incl_perldb()
1053{
1054 if (perldb) {
1055 char *pdb = getenv("PERL5DB");
1056
1057 if (pdb)
1058 return pdb;
1059 return "BEGIN { require 'perl5db.pl' }";
1060 }
1061 return "";
1062}
1063
1064
16d20bd9
AD		 1065/* Encoded script support. filter_add() effectively inserts a
1066 * 'pre-processing' function into the current source input stream.
1067 * Note that the filter function only applies to the current source file
1068 * (e.g., it will not affect files 'require'd or 'use'd by this one).
1069 *
1070 * The datasv parameter (which may be NULL) can be used to pass
1071 * private data to this instance of the filter. The filter function
1072 * can recover the SV using the FILTER_DATA macro and use it to
1073 * store private buffers and state information.
1074 *
1075 * The supplied datasv parameter is upgraded to a PVIO type
1076 * and the IoDIRP field is used to store the function pointer.
1077 * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for
1078 * private use must be set using malloc'd pointers.
1079 */
1080static int filter_debug = 0;
1081
1082SV *
1083filter_add(funcp, datasv)
1084 filter_t funcp;
1085 SV *datasv;
1086{
1087 if (!funcp){ /* temporary handy debugging hack to be deleted */
1088 filter_debug = atoi((char*)datasv);
1089 return NULL;
1090 }
1091 if (!rsfp_filters)
1092 rsfp_filters = newAV();
1093 if (!datasv)
1094 datasv = newSV(0);
1095 if (!SvUPGRADE(datasv, SVt_PVIO))
1096 die("Can't upgrade filter_add data to SVt_PVIO");
1097 IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */
1098 if (filter_debug)
1099 warn("filter_add func %lx (%s)", funcp, SvPV(datasv,na));
e50aee73
AD		 1100 av_unshift(rsfp_filters, 1);
1101 av_store(rsfp_filters, 0, datasv) ;
16d20bd9
AD		 1102 return(datasv);
1103}
1104
1105
1106/* Delete most recently added instance of this filter function. */
a0d0e21e 1107void
16d20bd9
AD		 1108filter_del(funcp)
1109 filter_t funcp;
1110{
1111 if (filter_debug)
1112 warn("filter_del func %lx", funcp);
1113 if (!rsfp_filters || AvFILL(rsfp_filters)<0)
1114 return;
1115 /* if filter is on top of stack (usual case) just pop it off */
e50aee73
AD		 1116 if (IoDIRP(FILTER_DATA(0)) == (void*)funcp){
1117 /* sv_free(av_pop(rsfp_filters)); */
1118 sv_free(av_shift(rsfp_filters));
1119
16d20bd9
AD		 1120 return;
1121 }
1122 /* we need to search for the correct entry and clear it */
1123 die("filter_del can only delete in reverse order (currently)");
1124}
1125
1126
1127/* Invoke the n'th filter function for the current rsfp. */
1128I32
1129filter_read(idx, buf_sv, maxlen)
1130 int idx;
1131 SV *buf_sv;
1132 int maxlen; /* 0 = read one text line */
a0d0e21e 1133{
16d20bd9
AD		 1134 filter_t funcp;
1135 SV *datasv = NULL;
e50aee73 1136
16d20bd9
AD		 1137 if (!rsfp_filters)
1138 return -1;
1139 if (idx > AvFILL(rsfp_filters)){ /* Any more filters? */
1140 /* Provide a default input filter to make life easy. */
1141 /* Note that we append to the line. This is handy. */
16d20bd9
AD		 1142 if (filter_debug)
1143 warn("filter_read %d: from rsfp\n", idx);
1144 if (maxlen) {
1145 /* Want a block */
1146 int len ;
1147 int old_len = SvCUR(buf_sv) ;
1148
1149 /* ensure buf_sv is large enough */
1150 SvGROW(buf_sv, old_len + maxlen) ;
760ac839
LW		 1151 if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){
1152 if (PerlIO_error(rsfp))
37120919
AD		 1153 return -1; /* error */
1154 else
1155 return 0 ; /* end of file */
1156 }
16d20bd9
AD		 1157 SvCUR_set(buf_sv, old_len + len) ;
1158 } else {
1159 /* Want a line */
37120919 1160 if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) {
760ac839 1161 if (PerlIO_error(rsfp))
37120919
AD		 1162 return -1; /* error */
1163 else
1164 return 0 ; /* end of file */
1165 }
16d20bd9
AD		 1166 }
1167 return SvCUR(buf_sv);
1168 }
1169 /* Skip this filter slot if filter has been deleted */
1170 if ( (datasv = FILTER_DATA(idx)) == &sv_undef){
1171 if (filter_debug)
1172 warn("filter_read %d: skipped (filter deleted)\n", idx);
1173 return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */
1174 }
1175 /* Get function pointer hidden within datasv */
1176 funcp = (filter_t)IoDIRP(datasv);
1177 if (filter_debug)
1178 warn("filter_read %d: via function %lx (%s)\n",
1179 idx, funcp, SvPV(datasv,na));
1180 /* Call function. The function is expected to */
1181 /* call "FILTER_READ(idx+1, buf_sv)" first. */
37120919 1182 /* Return: <0:error, =0:eof, >0:not eof */
16d20bd9
AD		 1183 return (*funcp)(idx, buf_sv, maxlen);
1184}
1185
1186static char *
fd049845 1187filter_gets(sv,fp, append)
16d20bd9 1188register SV *sv;
760ac839 1189register PerlIO *fp;
fd049845 1190STRLEN append;
16d20bd9
AD		 1191{
1192 if (rsfp_filters) {
1193
55497cff 1194 if (!append)
1195 SvCUR_set(sv, 0); /* start with empty line */
16d20bd9
AD		 1196 if (FILTER_READ(0, sv, 0) > 0)
1197 return ( SvPVX(sv) ) ;
1198 else
1199 return Nullch ;
1200 }
1201 else
fd049845 1202 return (sv_gets(sv, fp, append));
16d20bd9 1203
a0d0e21e
LW		 1204}
1205
1206
748a9306
LW		 1207#ifdef DEBUGGING
1208 static char* exp_name[] =
a0d0e21e 1209 { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" };
748a9306 1210#endif
463ee0b2 1211
71be2cbc 1212EXT int yychar; /* last token */
463ee0b2 1213
2f3197b3 1214int
378cc40b
LW		 1215yylex()
1216{
79072805 1217 register char *s;
378cc40b 1218 register char *d;
79072805 1219 register I32 tmp;
463ee0b2 1220 STRLEN len;
a687059c 1221
bbce6d69 1222 if (pending_ident) {
1223 char pit = pending_ident;
1224 pending_ident = 0;
1225
1226 if (in_my) {
1227 if (strchr(tokenbuf,':'))
1228 croak(no_myglob,tokenbuf);
1229 yylval.opval = newOP(OP_PADANY, 0);
1230 yylval.opval->op_targ = pad_allocmy(tokenbuf);
1231 return PRIVATEREF;
1232 }
1233
1234 if (!strchr(tokenbuf,':') && (tmp = pad_findmy(tokenbuf))) {
1235 if (last_lop_op == OP_SORT &&
1236 tokenbuf[0] == '$' &&
1237 (tokenbuf[1] == 'a' || tokenbuf[1] == 'b')
1238 && !tokenbuf[2])
1239 {
1240 for (d = in_eval ? oldoldbufptr : linestart;
1241 d < bufend && *d != '\n';
1242 d++)
1243 {
1244 if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) {
1245 croak("Can't use \"my %s\" in sort comparison",
1246 tokenbuf);
1247 }
1248 }
1249 }
1250
1251 yylval.opval = newOP(OP_PADANY, 0);
1252 yylval.opval->op_targ = tmp;
1253 return PRIVATEREF;
1254 }
1255
1256 /* Force them to make up their mind on "@foo". */
1257 if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) {
1258 GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV);
36477c24 1259 if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) {
bbce6d69 1260 char tmpbuf[1024];
1261 sprintf(tmpbuf, "Literal %s now requires backslash", tokenbuf);
1262 yyerror(tmpbuf);
1263 }
1264 }
1265
1266 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0));
1267 yylval.opval->op_private = OPpCONST_ENTERED;
1268 gv_fetchpv(tokenbuf+1, in_eval ? GV_ADDMULTI : TRUE,
1269 ((tokenbuf[0] == '$') ? SVt_PV
1270 : (tokenbuf[0] == '@') ? SVt_PVAV
1271 : SVt_PVHV));
1272 return WORD;
1273 }
1274
79072805
LW		 1275 switch (lex_state) {
1276#ifdef COMMENTARY
1277 case LEX_NORMAL: /* Some compilers will produce faster */
1278 case LEX_INTERPNORMAL: /* code if we comment these out. */
1279 break;
1280#endif
1281
1282 case LEX_KNOWNEXT:
1283 nexttoke--;
1284 yylval = nextval[nexttoke];
463ee0b2 1285 if (!nexttoke) {
79072805 1286 lex_state = lex_defer;
463ee0b2 1287 expect = lex_expect;
a0d0e21e 1288 lex_defer = LEX_NORMAL;
463ee0b2 1289 }
79072805
LW		 1290 return(nexttype[nexttoke]);
1291
1292 case LEX_INTERPCASEMOD:
1293#ifdef DEBUGGING
1294 if (bufptr != bufend && *bufptr != '\\')
463ee0b2 1295 croak("panic: INTERPCASEMOD");
79072805
LW		 1296#endif
1297 if (bufptr == bufend || bufptr[1] == 'E') {
a0d0e21e 1298 char oldmod;
79072805 1299 if (lex_casemods) {
a0d0e21e
LW		 1300 oldmod = lex_casestack[--lex_casemods];
1301 lex_casestack[lex_casemods] = '\0';
1302 if (bufptr != bufend && strchr("LUQ", oldmod)) {
1303 bufptr += 2;
1304 lex_state = LEX_INTERPCONCAT;
1305 }
79072805
LW		 1306 return ')';
1307 }
a0d0e21e
LW		 1308 if (bufptr != bufend)
1309 bufptr += 2;
1310 lex_state = LEX_INTERPCONCAT;
79072805
LW		 1311 return yylex();
1312 }
1313 else {
1314 s = bufptr + 1;
1315 if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3))
1316 tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */
a0d0e21e
LW		 1317 if (strchr("LU", *s) &&
1318 (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U')))
1319 {
1320 lex_casestack[--lex_casemods] = '\0';
1321 return ')';
1322 }
1323 if (lex_casemods > 10) {
89bfa8cd 1324 char* newlb = Renew(lex_casestack, lex_casemods + 2, char);
a0d0e21e
LW		 1325 if (newlb != lex_casestack) {
1326 SAVEFREEPV(newlb);
1327 lex_casestack = newlb;
1328 }
1329 }
1330 lex_casestack[lex_casemods++] = *s;
1331 lex_casestack[lex_casemods] = '\0';
79072805
LW		 1332 lex_state = LEX_INTERPCONCAT;
1333 nextval[nexttoke].ival = 0;
1334 force_next('(');
1335 if (*s == 'l')
1336 nextval[nexttoke].ival = OP_LCFIRST;
1337 else if (*s == 'u')
1338 nextval[nexttoke].ival = OP_UCFIRST;
1339 else if (*s == 'L')
1340 nextval[nexttoke].ival = OP_LC;
1341 else if (*s == 'U')
1342 nextval[nexttoke].ival = OP_UC;
a0d0e21e
LW		 1343 else if (*s == 'Q')
1344 nextval[nexttoke].ival = OP_QUOTEMETA;
79072805 1345 else
463ee0b2 1346 croak("panic: yylex");
79072805
LW		 1347 bufptr = s + 1;
1348 force_next(FUNC);
1349 if (lex_starts) {
1350 s = bufptr;
463ee0b2 1351 lex_starts = 0;
79072805
LW		 1352 Aop(OP_CONCAT);
1353 }
1354 else
1355 return yylex();
1356 }
1357
55497cff 1358 case LEX_INTERPPUSH:
1359 return sublex_push();
1360
79072805
LW		 1361 case LEX_INTERPSTART:
1362 if (bufptr == bufend)
1363 return sublex_done();
1364 expect = XTERM;
1365 lex_dojoin = (*bufptr == '@');
1366 lex_state = LEX_INTERPNORMAL;
1367 if (lex_dojoin) {
1368 nextval[nexttoke].ival = 0;
1369 force_next(',');
a0d0e21e 1370 force_ident("\"", '$');
79072805
LW		 1371 nextval[nexttoke].ival = 0;
1372 force_next('$');
1373 nextval[nexttoke].ival = 0;
1374 force_next('(');
1375 nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */
1376 force_next(FUNC);
1377 }
1378 if (lex_starts++) {
1379 s = bufptr;
1380 Aop(OP_CONCAT);
1381 }
1382 else
1383 return yylex();
1384 break;
1385
1386 case LEX_INTERPENDMAYBE:
1387 if (intuit_more(bufptr)) {
1388 lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */
1389 break;
1390 }
1391 /* FALL THROUGH */
1392
1393 case LEX_INTERPEND:
1394 if (lex_dojoin) {
1395 lex_dojoin = FALSE;
1396 lex_state = LEX_INTERPCONCAT;
1397 return ')';
1398 }
1399 /* FALLTHROUGH */
1400 case LEX_INTERPCONCAT:
1401#ifdef DEBUGGING
1402 if (lex_brackets)
463ee0b2 1403 croak("panic: INTERPCONCAT");
79072805
LW		 1404#endif
1405 if (bufptr == bufend)
1406 return sublex_done();
1407
ed6116ce 1408 if (SvIVX(linestr) == '\'') {
79072805
LW		 1409 SV *sv = newSVsv(linestr);
1410 if (!lex_inpat)
1411 sv = q(sv);
1412 yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv);
1413 s = bufend;
1414 }
1415 else {
1416 s = scan_const(bufptr);
1417 if (*s == '\\')
1418 lex_state = LEX_INTERPCASEMOD;
1419 else
1420 lex_state = LEX_INTERPSTART;
1421 }
1422
1423 if (s != bufptr) {
1424 nextval[nexttoke] = yylval;
463ee0b2 1425 expect = XTERM;
79072805
LW		 1426 force_next(THING);
1427 if (lex_starts++)
1428 Aop(OP_CONCAT);
1429 else {
1430 bufptr = s;
1431 return yylex();
1432 }
1433 }
1434
1435 return yylex();
a0d0e21e
LW		 1436 case LEX_FORMLINE:
1437 lex_state = LEX_NORMAL;
1438 s = scan_formline(bufptr);
1439 if (!lex_formbrack)
1440 goto rightbracket;
1441 OPERATOR(';');
79072805
LW		 1442 }
1443
1444 s = bufptr;
a687059c
LW		 1445 oldoldbufptr = oldbufptr;
1446 oldbufptr = s;
79072805 1447 DEBUG_p( {
760ac839 1448 PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s);
79072805 1449 } )
463ee0b2
LW		 1450
1451 retry:
378cc40b
LW		 1452 switch (*s) {
1453 default:
a0d0e21e 1454 warn("Unrecognized character \\%03o ignored", *s++ & 255);
378cc40b 1455 goto retry;
e929a76b
LW		 1456 case 4:
1457 case 26:
1458 goto fake_eof; /* emulate EOF on ^D or ^Z */
378cc40b 1459 case 0:
463ee0b2 1460 if (!rsfp) {
55497cff 1461 last_uni = 0;
1462 last_lop = 0;
463ee0b2
LW		 1463 if (lex_brackets)
1464 yyerror("Missing right bracket");
79072805 1465 TOKEN(0);
463ee0b2 1466 }
a687059c
LW		 1467 if (s++ < bufend)
1468 goto retry; /* ignore stray nulls */
2f3197b3 1469 last_uni = 0;
79072805 1470 last_lop = 0;
a0d0e21e 1471 if (!in_eval && !preambled) {
79072805 1472 preambled = TRUE;
a0d0e21e 1473 sv_setpv(linestr,incl_perldb());
91b7def8 1474 if (SvCUR(linestr))
1475 sv_catpv(linestr,";");
1476 if (preambleav){
1477 while(AvFILL(preambleav) >= 0) {
1478 SV *tmpsv = av_shift(preambleav);
1479 sv_catsv(linestr, tmpsv);
1480 sv_catpv(linestr, ";");
1481 sv_free(tmpsv);
1482 }
1483 sv_free((SV*)preambleav);
1484 preambleav = NULL;
1485 }
79072805
LW		 1486 if (minus_n || minus_p) {
1487 sv_catpv(linestr, "LINE: while (<>) {");
1488 if (minus_l)
a0d0e21e 1489 sv_catpv(linestr,"chomp;");
2304df62
AD		 1490 if (minus_a){
1491 if (minus_F){
1492 char tmpbuf1[50];
1493 if ( splitstr[0] == '/' ||
1494 splitstr[0] == '\'' ||
1495 splitstr[0] == '"' )
1496 sprintf( tmpbuf1, "@F=split(%s);", splitstr );
1497 else
1498 sprintf( tmpbuf1, "@F=split('%s');", splitstr );
1499 sv_catpv(linestr,tmpbuf1);
1500 }
1501 else
1502 sv_catpv(linestr,"@F=split(' ');");
1503 }
79072805 1504 }
a0d0e21e 1505 sv_catpv(linestr, "\n");
fd049845 1506 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1507 bufend = SvPVX(linestr) + SvCUR(linestr);
a0d0e21e
LW		 1508 if (perldb && curstash != debstash) {
1509 SV *sv = NEWSV(85,0);
1510
1511 sv_upgrade(sv, SVt_PVMG);
1512 sv_setsv(sv,linestr);
1513 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
1514 }
79072805 1515 goto retry;
a687059c 1516 }
e929a76b 1517 do {
fd049845 1518 if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) {
e929a76b 1519 fake_eof:
395c3793 1520 if (rsfp) {
a0d0e21e 1521 if (preprocess && !in_eval)
79072805 1522 (void)my_pclose(rsfp);
760ac839
LW		 1523 else if ((PerlIO *)rsfp == PerlIO_stdin())
1524 PerlIO_clearerr(rsfp);
395c3793 1525 else
760ac839 1526 (void)PerlIO_close(rsfp);
395c3793
LW		 1527 rsfp = Nullfp;
1528 }
a0d0e21e 1529 if (!in_eval && (minus_n || minus_p)) {
79072805
LW		 1530 sv_setpv(linestr,minus_p ? ";}continue{print" : "");
1531 sv_catpv(linestr,";}");
fd049845 1532 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
463ee0b2 1533 bufend = SvPVX(linestr) + SvCUR(linestr);
e929a76b
LW		 1534 minus_n = minus_p = 0;
1535 goto retry;
1536 }
fd049845 1537 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
79072805
LW		 1538 sv_setpv(linestr,"");
1539 TOKEN(';'); /* not infinite loop because rsfp is NULL now */
378cc40b 1540 }
a0d0e21e
LW		 1541 if (doextract) {
1542 if (*s == '#' && s[1] == '!' && instr(s,"perl"))
1543 doextract = FALSE;
1544
1545 /* Incest with pod. */
1546 if (*s == '=' && strnEQ(s, "=cut", 4)) {
1547 sv_setpv(linestr, "");
fd049845 1548 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
a0d0e21e
LW		 1549 bufend = SvPVX(linestr) + SvCUR(linestr);
1550 doextract = FALSE;
1551 }
1552 }
463ee0b2 1553 incline(s);
e929a76b 1554 } while (doextract);
fd049845 1555 oldoldbufptr = oldbufptr = bufptr = linestart = s;
8990e307 1556 if (perldb && curstash != debstash) {
79072805 1557 SV *sv = NEWSV(85,0);
a687059c 1558
93a17b20 1559 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 1560 sv_setsv(sv,linestr);
1561 av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv);
a687059c 1562 }
463ee0b2 1563 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 1564 if (curcop->cop_line == 1) {
1565 while (s < bufend && isSPACE(*s))
1566 s++;
a0d0e21e 1567 if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */
79072805 1568 s++;
a0d0e21e 1569 if (!in_eval && *s == '#' && s[1] == '!') {
748a9306
LW		 1570 d = instr(s,"perl -");
1571 if (!d)
1572 d = instr(s,"perl");
1573 if (!d &&
1574 !minus_c &&
1575 !instr(s,"indir") &&
1576 instr(origargv[0],"perl"))
1577 {
9f68db38
LW		 1578 char **newargv;
1579 char *cmd;
1580
1581 s += 2;
1582 if (*s == ' ')
1583 s++;
1584 cmd = s;
de3bb511 1585 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1586 s++;
1587 *s++ = '\0';
de3bb511 1588 while (s < bufend && isSPACE(*s))
9f68db38
LW		 1589 s++;
1590 if (s < bufend) {
1591 Newz(899,newargv,origargc+3,char*);
1592 newargv[1] = s;
de3bb511 1593 while (s < bufend && !isSPACE(*s))
9f68db38
LW		 1594 s++;
1595 *s = '\0';
1596 Copy(origargv+1, newargv+2, origargc+1, char*);
1597 }
1598 else
1599 newargv = origargv;
1600 newargv[0] = cmd;
1601 execv(cmd,newargv);
463ee0b2 1602 croak("Can't exec %s", cmd);
9f68db38 1603 }
748a9306 1604 if (d) {
a0d0e21e
LW		 1605 int oldpdb = perldb;
1606 int oldn = minus_n;
1607 int oldp = minus_p;
748a9306
LW		 1608
1609 while (*d && !isSPACE(*d)) d++;
89bfa8cd 1610 while (*d == ' ' || *d == '\t') d++;
748a9306
LW		 1611
1612 if (*d++ == '-') {
1613 while (d = moreswitches(d)) ;
1614 if (perldb && !oldpdb ||
b084f20b 1615 ( minus_n || minus_p ) && !(oldn || oldp) )
1616 /* if we have already added "LINE: while (<>) {",
1617 we must not do it again */
748a9306
LW		 1618 {
1619 sv_setpv(linestr, "");
fd049845 1620 oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr);
748a9306
LW		 1621 bufend = SvPVX(linestr) + SvCUR(linestr);
1622 preambled = FALSE;
1623 if (perldb)
1624 (void)gv_fetchfile(origfilename);
1625 goto retry;
1626 }
a0d0e21e 1627 }
79072805 1628 }
9f68db38 1629 }
79072805 1630 }
85e6fe83 1631 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1632 bufptr = s;
1633 lex_state = LEX_FORMLINE;
1634 return yylex();
ae986130 1635 }
378cc40b 1636 goto retry;
fe14fcc3 1637 case ' ': case '\t': case '\f': case '\r': case 013:
378cc40b
LW		 1638 s++;
1639 goto retry;
378cc40b 1640 case '#':
e929a76b 1641 case '\n':
79072805 1642 if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) {
a687059c
LW		 1643 d = bufend;
1644 while (s < d && *s != '\n')
378cc40b 1645 s++;
0f85fab0 1646 if (s < d)
378cc40b 1647 s++;
463ee0b2 1648 incline(s);
85e6fe83 1649 if (lex_formbrack && lex_brackets <= lex_formbrack) {
a0d0e21e
LW		 1650 bufptr = s;
1651 lex_state = LEX_FORMLINE;
1652 return yylex();
a687059c 1653 }
378cc40b 1654 }
a687059c 1655 else {
378cc40b 1656 *s = '\0';
a687059c
LW		 1657 bufend = s;
1658 }
378cc40b
LW		 1659 goto retry;
1660 case '-':
79072805 1661 if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) {
378cc40b 1662 s++;
748a9306
LW		 1663 bufptr = s;
1664 tmp = *s++;
1665
1666 while (s < bufend && (*s == ' ' || *s == '\t'))
1667 s++;
1668
1669 if (strnEQ(s,"=>",2)) {
1670 if (dowarn)
1671 warn("Ambiguous use of -%c => resolved to \"-%c\" =>",
1672 tmp, tmp);
1673 s = force_word(bufptr,WORD,FALSE,FALSE,FALSE);
1674 OPERATOR('-'); /* unary minus */
1675 }
e334a159 1676 last_uni = oldbufptr;
a0d0e21e 1677 last_lop_op = OP_FTEREAD; /* good enough */
748a9306 1678 switch (tmp) {
79072805
LW		 1679 case 'r': FTST(OP_FTEREAD);
1680 case 'w': FTST(OP_FTEWRITE);
1681 case 'x': FTST(OP_FTEEXEC);
1682 case 'o': FTST(OP_FTEOWNED);
1683 case 'R': FTST(OP_FTRREAD);
1684 case 'W': FTST(OP_FTRWRITE);
1685 case 'X': FTST(OP_FTREXEC);
1686 case 'O': FTST(OP_FTROWNED);
1687 case 'e': FTST(OP_FTIS);
1688 case 'z': FTST(OP_FTZERO);
1689 case 's': FTST(OP_FTSIZE);
1690 case 'f': FTST(OP_FTFILE);
1691 case 'd': FTST(OP_FTDIR);
1692 case 'l': FTST(OP_FTLINK);
1693 case 'p': FTST(OP_FTPIPE);
1694 case 'S': FTST(OP_FTSOCK);
1695 case 'u': FTST(OP_FTSUID);
1696 case 'g': FTST(OP_FTSGID);
1697 case 'k': FTST(OP_FTSVTX);
1698 case 'b': FTST(OP_FTBLK);
1699 case 'c': FTST(OP_FTCHR);
1700 case 't': FTST(OP_FTTTY);
1701 case 'T': FTST(OP_FTTEXT);
1702 case 'B': FTST(OP_FTBINARY);
85e6fe83
LW		 1703 case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME);
1704 case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME);
1705 case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME);
378cc40b 1706 default:
748a9306 1707 croak("Unrecognized file test: -%c", tmp);
378cc40b
LW		 1708 break;
1709 }
1710 }
a687059c
LW		 1711 tmp = *s++;
1712 if (*s == tmp) {
1713 s++;
79072805
LW		 1714 if (expect == XOPERATOR)
1715 TERM(POSTDEC);
1716 else
1717 OPERATOR(PREDEC);
1718 }
1719 else if (*s == '>') {
1720 s++;
1721 s = skipspace(s);
1722 if (isIDFIRST(*s)) {
a0d0e21e 1723 s = force_word(s,METHOD,FALSE,TRUE,FALSE);
463ee0b2 1724 TOKEN(ARROW);
79072805 1725 }
748a9306
LW		 1726 else if (*s == '$')
1727 OPERATOR(ARROW);
463ee0b2 1728 else
748a9306 1729 TERM(ARROW);
a687059c 1730 }
79072805
LW		 1731 if (expect == XOPERATOR)
1732 Aop(OP_SUBTRACT);
1733 else {
2f3197b3
LW		 1734 if (isSPACE(*s) || !isSPACE(*bufptr))
1735 check_uni();
79072805 1736 OPERATOR('-'); /* unary minus */
2f3197b3 1737 }
79072805 1738
378cc40b 1739 case '+':
a687059c
LW		 1740 tmp = *s++;
1741 if (*s == tmp) {
378cc40b 1742 s++;
79072805
LW		 1743 if (expect == XOPERATOR)
1744 TERM(POSTINC);
1745 else
1746 OPERATOR(PREINC);
378cc40b 1747 }
79072805
LW		 1748 if (expect == XOPERATOR)
1749 Aop(OP_ADD);
1750 else {
2f3197b3
LW		 1751 if (isSPACE(*s) || !isSPACE(*bufptr))
1752 check_uni();
a687059c 1753 OPERATOR('+');
2f3197b3 1754 }
a687059c 1755
378cc40b 1756 case '*':
79072805
LW		 1757 if (expect != XOPERATOR) {
1758 s = scan_ident(s, bufend, tokenbuf, TRUE);
463ee0b2 1759 expect = XOPERATOR;
a0d0e21e
LW		 1760 force_ident(tokenbuf, '*');
1761 if (!*tokenbuf)
1762 PREREF('*');
79072805 1763 TERM('*');
a687059c 1764 }
79072805
LW		 1765 s++;
1766 if (*s == '*') {
a687059c 1767 s++;
79072805 1768 PWop(OP_POW);
a687059c 1769 }
79072805
LW		 1770 Mop(OP_MULTIPLY);
1771
378cc40b 1772 case '%':
bbce6d69 1773 if (expect == XOPERATOR) {
1774 ++s;
1775 Mop(OP_MODULO);
a687059c 1776 }
bbce6d69 1777 tokenbuf[0] = '%';
1778 s = scan_ident(s, bufend, tokenbuf+1, TRUE);
1779 if (!tokenbuf[1]) {
1780 if (s == bufend)
1781 yyerror("Final % should be \\% or %name");
1782 PREREF('%');
1783 }
1784 pending_ident = '%';
1785 TERM('%');
a687059c 1786
378cc40b 1787 case '^':
79072805 1788 s++;
a0d0e21e 1789 BOop(OP_BIT_XOR);
79072805
LW		 1790 case '[':
1791 lex_brackets++;
1792 /* FALL THROUGH */
378cc40b 1793 case '~':
378cc40b 1794 case ',':
378cc40b
LW		 1795 tmp = *s++;
1796 OPERATOR(tmp);
a0d0e21e
LW		 1797 case ':':
1798 if (s[1] == ':') {
1799 len = 0;
1800 goto just_a_word;
1801 }
1802 s++;
1803 OPERATOR(':');
8990e307
LW		 1804 case '(':
1805 s++;
a0d0e21e 1806 if (last_lop == oldoldbufptr || last_uni == oldoldbufptr)
8990e307 1807 oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */
a0d0e21e
LW		 1808 else
1809 expect = XTERM;
1810 TOKEN('(');
378cc40b 1811 case ';':
79072805
LW		 1812 if (curcop->cop_line < copline)
1813 copline = curcop->cop_line;
378cc40b
LW		 1814 tmp = *s++;
1815 OPERATOR(tmp);
1816 case ')':
378cc40b 1817 tmp = *s++;
16d20bd9
AD		 1818 s = skipspace(s);
1819 if (*s == '{')
1820 PREBLOCK(tmp);
378cc40b 1821 TERM(tmp);
79072805
LW		 1822 case ']':
1823 s++;
463ee0b2
LW		 1824 if (lex_brackets <= 0)
1825 yyerror("Unmatched right bracket");
1826 else
1827 --lex_brackets;
79072805 1828 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1829 if (lex_brackets == 0) {
a0d0e21e 1830 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1831 lex_state = LEX_INTERPEND;
1832 }
1833 }
4633a7c4 1834 TERM(']');
79072805
LW		 1835 case '{':
1836 leftbracket:
79072805 1837 s++;
8990e307 1838 if (lex_brackets > 100) {
89bfa8cd 1839 char* newlb = Renew(lex_brackstack, lex_brackets + 1, char);
8990e307
LW		 1840 if (newlb != lex_brackstack) {
1841 SAVEFREEPV(newlb);
1842 lex_brackstack = newlb;
1843 }
1844 }
a0d0e21e
LW		 1845 switch (expect) {
1846 case XTERM:
1847 if (lex_formbrack) {
1848 s--;
1849 PRETERMBLOCK(DO);
1850 }
1851 if (oldoldbufptr == last_lop)
1852 lex_brackstack[lex_brackets++] = XTERM;
1853 else
1854 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805 1855 OPERATOR(HASHBRACK);
a0d0e21e 1856 break;
a0d0e21e 1857 case XOPERATOR:
748a9306
LW		 1858 while (s < bufend && (*s == ' ' || *s == '\t'))
1859 s++;
ff68c719 1860 if (s < bufend && isIDFIRST(*s)) {
748a9306
LW		 1861 d = scan_word(s, tokenbuf, FALSE, &len);
1862 while (d < bufend && (*d == ' ' || *d == '\t'))
1863 d++;
1864 if (*d == '}') {
1865 if (dowarn &&
1866 (keyword(tokenbuf, len) ||
1867 perl_get_cv(tokenbuf, FALSE) ))
1868 warn("Ambiguous use of {%s} resolved to {\"%s\"}",
1869 tokenbuf, tokenbuf);
1870 s = force_word(s,WORD,FALSE,TRUE,FALSE);
1871 }
1872 }
1873 /* FALL THROUGH */
1874 case XBLOCK:
a0d0e21e 1875 lex_brackstack[lex_brackets++] = XSTATE;
2304df62 1876 expect = XSTATE;
a0d0e21e
LW		 1877 break;
1878 case XTERMBLOCK:
1879 lex_brackstack[lex_brackets++] = XOPERATOR;
1880 expect = XSTATE;
1881 break;
1882 default: {
1883 char *t;
1884 if (oldoldbufptr == last_lop)
1885 lex_brackstack[lex_brackets++] = XTERM;
1886 else
1887 lex_brackstack[lex_brackets++] = XOPERATOR;
1888 s = skipspace(s);
1889 if (*s == '}')
1890 OPERATOR(HASHBRACK);
1891 if (isALPHA(*s)) {
c07a80fd 1892 for (t = s; t < bufend && isALNUM(*t); t++) ;
a0d0e21e
LW		 1893 }
1894 else if (*s == '\'' || *s == '"') {
1895 t = strchr(s+1,*s);
1896 if (!t++)
1897 t = s;
1898 }
1899 else
1900 t = s;
1901 while (t < bufend && isSPACE(*t))
1902 t++;
1903 if ((*t == ',' && !isLOWER(*s)) || (*t == '=' && t[1] == '>'))
1904 OPERATOR(HASHBRACK);
1905 if (expect == XREF)
1906 expect = XTERM;
1907 else {
1908 lex_brackstack[lex_brackets-1] = XSTATE;
1909 expect = XSTATE;
1910 }
8990e307 1911 }
a0d0e21e 1912 break;
463ee0b2 1913 }
79072805
LW		 1914 yylval.ival = curcop->cop_line;
1915 if (isSPACE(*s) || *s == '#')
1916 copline = NOLINE; /* invalidate current command line number */
79072805 1917 TOKEN('{');
378cc40b 1918 case '}':
79072805
LW		 1919 rightbracket:
1920 s++;
463ee0b2
LW		 1921 if (lex_brackets <= 0)
1922 yyerror("Unmatched right bracket");
1923 else
1924 expect = (expectation)lex_brackstack[--lex_brackets];
85e6fe83
LW		 1925 if (lex_brackets < lex_formbrack)
1926 lex_formbrack = 0;
79072805 1927 if (lex_state == LEX_INTERPNORMAL) {
463ee0b2 1928 if (lex_brackets == 0) {
79072805
LW		 1929 if (lex_fakebrack) {
1930 lex_state = LEX_INTERPEND;
1931 bufptr = s;
1932 return yylex(); /* ignore fake brackets */
1933 }
a0d0e21e 1934 if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>'))
79072805
LW		 1935 lex_state = LEX_INTERPEND;
1936 }
1937 }
748a9306
LW		 1938 if (lex_brackets < lex_fakebrack) {
1939 bufptr = s;
1940 lex_fakebrack = 0;
1941 return yylex(); /* ignore fake brackets */
1942 }
79072805
LW		 1943 force_next('}');
1944 TOKEN(';');
378cc40b
LW		 1945 case '&':
1946 s++;
1947 tmp = *s++;
1948 if (tmp == '&')
a0d0e21e 1949 AOPERATOR(ANDAND);
378cc40b 1950 s--;
463ee0b2 1951 if (expect == XOPERATOR) {
fd049845 1952 if (dowarn && isALPHA(*s) && bufptr == linestart) {
463ee0b2
LW		 1953 curcop->cop_line--;
1954 warn(warn_nosemi);
1955 curcop->cop_line++;
1956 }
79072805 1957 BAop(OP_BIT_AND);
463ee0b2 1958 }
79072805
LW		 1959
1960 s = scan_ident(s-1, bufend, tokenbuf, TRUE);
463ee0b2
LW		 1961 if (*tokenbuf) {
1962 expect = XOPERATOR;
a0d0e21e 1963 force_ident(tokenbuf, '&');
463ee0b2 1964 }
79072805
LW		 1965 else
1966 PREREF('&');
c07a80fd 1967 yylval.ival = (OPpENTERSUB_AMPER<<8);
79072805
LW		 1968 TERM('&');
1969
378cc40b
LW		 1970 case '|':
1971 s++;
1972 tmp = *s++;
1973 if (tmp == '|')
a0d0e21e 1974 AOPERATOR(OROR);
378cc40b 1975 s--;
79072805 1976 BOop(OP_BIT_OR);
378cc40b
LW		 1977 case '=':
1978 s++;
1979 tmp = *s++;
1980 if (tmp == '=')
79072805
LW		 1981 Eop(OP_EQ);
1982 if (tmp == '>')
1983 OPERATOR(',');
378cc40b 1984 if (tmp == '~')
79072805 1985 PMop(OP_MATCH);
463ee0b2
LW		 1986 if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp))
1987 warn("Reversed %c= operator",tmp);
378cc40b 1988 s--;
748a9306 1989 if (expect == XSTATE && isALPHA(tmp) &&
fd049845 1990 (s == linestart+1 || s[-2] == '\n') )
748a9306 1991 {
a5f75d66
AD		 1992 if (in_eval && !rsfp) {
1993 d = bufend;
1994 while (s < d) {
1995 if (*s++ == '\n') {
1996 incline(s);
1997 if (strnEQ(s,"=cut",4)) {
1998 s = strchr(s,'\n');
1999 if (s)
2000 s++;
2001 else
2002 s = d;
2003 incline(s);
2004 goto retry;
2005 }
2006 }
2007 }
2008 goto retry;
2009 }
a0d0e21e
LW		 2010 s = bufend;
2011 doextract = TRUE;
2012 goto retry;
2013 }
2014 if (lex_brackets < lex_formbrack) {
2015 char *t;
2016 for (t = s; *t == ' ' || *t == '\t'; t++) ;
2017 if (*t == '\n' || *t == '#') {
2018 s--;
2019 expect = XBLOCK;
2020 goto leftbracket;
2021 }
79072805 2022 }
a0d0e21e
LW		 2023 yylval.ival = 0;
2024 OPERATOR(ASSIGNOP);
378cc40b
LW		 2025 case '!':
2026 s++;
2027 tmp = *s++;
2028 if (tmp == '=')
79072805 2029 Eop(OP_NE);
378cc40b 2030 if (tmp == '~')
79072805 2031 PMop(OP_NOT);
378cc40b
LW		 2032 s--;
2033 OPERATOR('!');
2034 case '<':
79072805 2035 if (expect != XOPERATOR) {
93a17b20 2036 if (s[1] != '<' && !strchr(s,'>'))
2f3197b3 2037 check_uni();
79072805
LW		 2038 if (s[1] == '<')
2039 s = scan_heredoc(s);
2040 else
2041 s = scan_inputsymbol(s);
2042 TERM(sublex_start());
378cc40b
LW		 2043 }
2044 s++;
2045 tmp = *s++;
2046 if (tmp == '<')
79072805 2047 SHop(OP_LEFT_SHIFT);
395c3793
LW		 2048 if (tmp == '=') {
2049 tmp = *s++;
2050 if (tmp == '>')
79072805 2051 Eop(OP_NCMP);
395c3793 2052 s--;
79072805 2053 Rop(OP_LE);
395c3793 2054 }
378cc40b 2055 s--;
79072805 2056 Rop(OP_LT);
378cc40b
LW		 2057 case '>':
2058 s++;
2059 tmp = *s++;
2060 if (tmp == '>')
79072805 2061 SHop(OP_RIGHT_SHIFT);
378cc40b 2062 if (tmp == '=')
79072805 2063 Rop(OP_GE);
378cc40b 2064 s--;
79072805 2065 Rop(OP_GT);
378cc40b
LW		 2066
2067 case '$':
bbce6d69 2068 CLINE;
2069
2070 if (expect == XOPERATOR) {
2071 if (lex_formbrack && lex_brackets == lex_formbrack) {
2072 expect = XTERM;
2073 depcom();
2074 return ','; /* grandfather non-comma-format format */
8990e307 2075 }
bbce6d69 2076 }
2077
2078 if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) {
2079 if (expect == XOPERATOR)
2080 no_op("Array length", bufptr);
2081 tokenbuf[0] = '@';
2082 s = scan_ident(s+1, bufend, tokenbuf+1, FALSE);
2083 if (!tokenbuf[1])
a0d0e21e 2084 PREREF(DOLSHARP);
463ee0b2 2085 expect = XOPERATOR;
bbce6d69 2086 pending_ident = '#';
463ee0b2 2087 TOKEN(DOLSHARP);
79072805 2088 }
bbce6d69 2089
2090 if (expect == XOPERATOR)
2091 no_op("Scalar", bufptr);
2092 tokenbuf[0] = '$';
93a17b20 2093 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
bbce6d69 2094 if (!tokenbuf[1]) {
2095 if (s == bufend)
2096 yyerror("Final $ should be \\$ or $name");
2097 PREREF('$');
8990e307 2098 }
a0d0e21e 2099
bbce6d69 2100 /* This kludge not intended to be bulletproof. */
2101 if (tokenbuf[1] == '[' && !tokenbuf[2]) {
2102 yylval.opval = newSVOP(OP_CONST, 0,
2103 newSViv((IV)compiling.cop_arybase));
2104 yylval.opval->op_private = OPpCONST_ARYBASE;
2105 TERM(THING);
2106 }
2107
ff68c719 2108 d = s;
2109 if (lex_state == LEX_NORMAL)
2110 s = skipspace(s);
2111
bbce6d69 2112 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2113 char *t;
2114 if (*s == '[') {
2115 tokenbuf[0] = '@';
2116 if (dowarn) {
2117 for(t = s + 1;
2118 isSPACE(*t) || isALNUM(*t) || *t == '$';
2119 t++) ;
a0d0e21e
LW		 2120 if (*t++ == ',') {
2121 bufptr = skipspace(bufptr);
bbce6d69 2122 while (t < bufend && *t != ']')
2123 t++;
a0d0e21e 2124 warn("Multidimensional syntax %.*s not supported",
bbce6d69 2125 (t - bufptr) + 1, bufptr);
a0d0e21e
LW		 2126 }
2127 }
bbce6d69 2128 }
2129 else if (*s == '{') {
2130 tokenbuf[0] = '%';
2131 if (dowarn && strEQ(tokenbuf+1, "SIG") &&
2132 (t = strchr(s, '}')) && (t = strchr(t, '=')))
2133 {
a0d0e21e 2134 char tmpbuf[1024];
a0d0e21e
LW		 2135 STRLEN len;
2136 for (t++; isSPACE(*t); t++) ;
748a9306
LW		 2137 if (isIDFIRST(*t)) {
2138 t = scan_word(t, tmpbuf, TRUE, &len);
2139 if (*t != '(' && perl_get_cv(tmpbuf, FALSE))
2140 warn("You need to quote \"%s\"", tmpbuf);
2141 }
93a17b20
LW		 2142 }
2143 }
2f3197b3 2144 }
bbce6d69 2145
2146 expect = XOPERATOR;
ff68c719 2147 if (lex_state == LEX_NORMAL && isSPACE(*d)) {
bbce6d69 2148 bool islop = (last_lop == oldoldbufptr);
bbce6d69 2149 if (!islop || last_lop_op == OP_GREPSTART)
2150 expect = XOPERATOR;
2151 else if (strchr("$@\"'`q", *s))
2152 expect = XTERM; /* e.g. print $fh "foo" */
2153 else if (strchr("&*<%", *s) && isIDFIRST(s[1]))
2154 expect = XTERM; /* e.g. print $fh &sub */
2155 else if (isDIGIT(*s))
2156 expect = XTERM; /* e.g. print $fh 3 */
2157 else if (*s == '.' && isDIGIT(s[1]))
2158 expect = XTERM; /* e.g. print $fh .3 */
2159 else if (strchr("/?-+", *s) && !isSPACE(s[1]))
2160 expect = XTERM; /* e.g. print $fh -1 */
2161 else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]))
2162 expect = XTERM; /* print $fh <<"EOF" */
2163 }
2164 pending_ident = '$';
79072805 2165 TOKEN('$');
378cc40b
LW		 2166
2167 case '@':
8990e307 2168 if (expect == XOPERATOR)
bbce6d69 2169 no_op("Array", s);
2170 tokenbuf[0] = '@';
2171 s = scan_ident(s, bufend, tokenbuf+1, FALSE);
2172 if (!tokenbuf[1]) {
2173 if (s == bufend)
2174 yyerror("Final @ should be \\@ or @name");
2175 PREREF('@');
2176 }
ff68c719 2177 if (lex_state == LEX_NORMAL)
2178 s = skipspace(s);
bbce6d69 2179 if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) {
2180 if (*s == '{')
2181 tokenbuf[0] = '%';
a0d0e21e
LW		 2182
2183 /* Warn about @ where they meant $. */
2184 if (dowarn) {
2185 if (*s == '[' || *s == '{') {
2186 char *t = s + 1;
2187 while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t)))
2188 t++;
2189 if (*t == '}' || *t == ']') {
2190 t++;
2191 bufptr = skipspace(bufptr);
2192 warn("Scalar value %.*s better written as $%.*s",
2193 t-bufptr, bufptr, t-bufptr-1, bufptr+1);
2194 }
93a17b20
LW		 2195 }
2196 }
463ee0b2 2197 }
bbce6d69 2198 pending_ident = '@';
79072805 2199 TERM('@');
378cc40b
LW		 2200
2201 case '/': /* may either be division or pattern */
2202 case '?': /* may either be conditional or pattern */
79072805 2203 if (expect != XOPERATOR) {
2f3197b3 2204 check_uni();
79072805
LW		 2205 s = scan_pat(s);
2206 TERM(sublex_start());
378cc40b
LW		 2207 }
2208 tmp = *s++;
a687059c 2209 if (tmp == '/')
79072805 2210 Mop(OP_DIVIDE);
378cc40b
LW		 2211 OPERATOR(tmp);
2212
2213 case '.':
748a9306 2214 if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' &&
fd049845 2215 (s == linestart || s[-1] == '\n') ) {
85e6fe83 2216 lex_formbrack = 0;
8990e307 2217 expect = XSTATE;
79072805
LW		 2218 goto rightbracket;
2219 }
2220 if (expect == XOPERATOR || !isDIGIT(s[1])) {
378cc40b 2221 tmp = *s++;
a687059c
LW		 2222 if (*s == tmp) {
2223 s++;
2f3197b3
LW		 2224 if (*s == tmp) {
2225 s++;
79072805 2226 yylval.ival = OPf_SPECIAL;
2f3197b3
LW		 2227 }
2228 else
79072805 2229 yylval.ival = 0;
378cc40b 2230 OPERATOR(DOTDOT);
a687059c 2231 }
79072805 2232 if (expect != XOPERATOR)
2f3197b3 2233 check_uni();
79072805 2234 Aop(OP_CONCAT);
378cc40b
LW		 2235 }
2236 /* FALL THROUGH */
2237 case '0': case '1': case '2': case '3': case '4':
2238 case '5': case '6': case '7': case '8': case '9':
79072805 2239 s = scan_num(s);
8990e307
LW		 2240 if (expect == XOPERATOR)
2241 no_op("Number",s);
79072805
LW		 2242 TERM(THING);
2243
2244 case '\'':
8990e307 2245 s = scan_str(s);
463ee0b2 2246 if (expect == XOPERATOR) {
a0d0e21e
LW		 2247 if (lex_formbrack && lex_brackets == lex_formbrack) {
2248 expect = XTERM;
2249 depcom();
2250 return ','; /* grandfather non-comma-format format */
2251 }
463ee0b2 2252 else
8990e307 2253 no_op("String",s);
463ee0b2 2254 }
79072805 2255 if (!s)
85e6fe83 2256 missingterm((char*)0);
79072805
LW		 2257 yylval.ival = OP_CONST;
2258 TERM(sublex_start());
2259
2260 case '"':
8990e307 2261 s = scan_str(s);
463ee0b2 2262 if (expect == XOPERATOR) {
a0d0e21e
LW		 2263 if (lex_formbrack && lex_brackets == lex_formbrack) {
2264 expect = XTERM;
2265 depcom();
2266 return ','; /* grandfather non-comma-format format */
2267 }
463ee0b2 2268 else
8990e307 2269 no_op("String",s);
463ee0b2 2270 }
79072805 2271 if (!s)
85e6fe83 2272 missingterm((char*)0);
4633a7c4
LW		 2273 yylval.ival = OP_CONST;
2274 for (d = SvPV(lex_stuff, len); len; len--, d++) {
2275 if (*d == '$' || *d == '@' || *d == '\\') {
2276 yylval.ival = OP_STRINGIFY;
2277 break;
2278 }
2279 }
79072805
LW		 2280 TERM(sublex_start());
2281
2282 case '`':
2283 s = scan_str(s);
8990e307
LW		 2284 if (expect == XOPERATOR)
2285 no_op("Backticks",s);
79072805 2286 if (!s)
85e6fe83 2287 missingterm((char*)0);
79072805
LW		 2288 yylval.ival = OP_BACKTICK;
2289 set_csh();
2290 TERM(sublex_start());
2291
2292 case '\\':
2293 s++;
748a9306
LW		 2294 if (dowarn && lex_inwhat && isDIGIT(*s))
2295 warn("Can't use \\%c to mean $%c in expression", *s, *s);
8990e307
LW		 2296 if (expect == XOPERATOR)
2297 no_op("Backslash",s);
79072805
LW		 2298 OPERATOR(REFGEN);
2299
2300 case 'x':
2301 if (isDIGIT(s[1]) && expect == XOPERATOR) {
2302 s++;
2303 Mop(OP_REPEAT);
2f3197b3 2304 }
79072805
LW		 2305 goto keylookup;
2306
378cc40b 2307 case '_':
79072805
LW		 2308 case 'a': case 'A':
2309 case 'b': case 'B':
2310 case 'c': case 'C':
2311 case 'd': case 'D':
2312 case 'e': case 'E':
2313 case 'f': case 'F':
2314 case 'g': case 'G':
2315 case 'h': case 'H':
2316 case 'i': case 'I':
2317 case 'j': case 'J':
2318 case 'k': case 'K':
2319 case 'l': case 'L':
2320 case 'm': case 'M':
2321 case 'n': case 'N':
2322 case 'o': case 'O':
2323 case 'p': case 'P':
2324 case 'q': case 'Q':
2325 case 'r': case 'R':
2326 case 's': case 'S':
2327 case 't': case 'T':
2328 case 'u': case 'U':
2329 case 'v': case 'V':
2330 case 'w': case 'W':
2331 case 'X':
2332 case 'y': case 'Y':
2333 case 'z': case 'Z':
2334
2335 keylookup:
748a9306 2336 bufptr = s;
463ee0b2
LW		 2337 s = scan_word(s, tokenbuf, FALSE, &len);
2338
4633a7c4
LW		 2339 if (*s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE"))
2340 goto just_a_word;
2341
3643fb5f
CS		 2342 d = s;
2343 while (d < bufend && isSPACE(*d))
2344 d++; /* no comments skipped here, or s### is misparsed */
2345
2346 /* Is this a label? */
2347 if (expect == XSTATE && d < bufend && *d == ':' && *(d + 1) != ':') {
e0bef290
CS		 2348 if (len == 1 && strchr("syq", tokenbuf[0]) ||
2349 len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') ||
2350 (tokenbuf[0] == 'q' &&
2351 strchr("qwx", tokenbuf[1]))))
2352 ; /* no */
2353 else {
2354 s = d + 1;
2355 yylval.pval = savepv(tokenbuf);
2356 CLINE;
2357 TOKEN(LABEL);
2358 }
3643fb5f
CS		 2359 }
2360
2361 /* Check for keywords */
a0d0e21e 2362 tmp = keyword(tokenbuf, len);
748a9306
LW		 2363
2364 /* Is this a word before a => operator? */
748a9306
LW		 2365 if (strnEQ(d,"=>",2)) {
2366 CLINE;
2367 if (dowarn && (tmp || perl_get_cv(tokenbuf, FALSE)))
2368 warn("Ambiguous use of %s => resolved to \"%s\" =>",
2369 tokenbuf, tokenbuf);
2370 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2371 yylval.opval->op_private = OPpCONST_BARE;
2372 TERM(WORD);
2373 }
2374
a0d0e21e
LW		 2375 if (tmp < 0) { /* second-class keyword? */
2376 GV* gv;
2377 if (expect != XOPERATOR &&
a5f75d66
AD		 2378 (*s != ':' || s[1] != ':') &&
2379 (gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) &&
2380 GvIMPORTED_CV(gv))
a0d0e21e
LW		 2381 {
2382 tmp = 0;
2383 }
2384 else
2385 tmp = -tmp;
2386 }
2387
2388 reserved_word:
2389 switch (tmp) {
79072805
LW		 2390
2391 default: /* not a keyword */
93a17b20
LW		 2392 just_a_word: {
2393 GV *gv;
748a9306 2394 char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]);
8990e307
LW		 2395
2396 /* Get the rest if it looks like a package qualifier */
2397
a0d0e21e 2398 if (*s == '\'' || *s == ':' && s[1] == ':') {
463ee0b2 2399 s = scan_word(s, tokenbuf + len, TRUE, &len);
a0d0e21e
LW		 2400 if (!len)
2401 croak("Bad name after %s::", tokenbuf);
2402 }
8990e307 2403
3643fb5f 2404 if (expect == XOPERATOR) {
fd049845 2405 if (bufptr == linestart) {
463ee0b2
LW		 2406 curcop->cop_line--;
2407 warn(warn_nosemi);
2408 curcop->cop_line++;
2409 }
2410 else
8990e307 2411 no_op("Bare word",s);
463ee0b2 2412 }
8990e307
LW		 2413
2414 /* Look for a subroutine with this name in current package. */
2415
85e6fe83 2416 gv = gv_fetchpv(tokenbuf,FALSE, SVt_PVCV);
8990e307 2417
a0d0e21e
LW		 2418 /* Presume this is going to be a bareword of some sort. */
2419
2420 CLINE;
2421 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2422 yylval.opval->op_private = OPpCONST_BARE;
2423
8990e307
LW		 2424 /* See if it's the indirect object for a list operator. */
2425
a0d0e21e
LW		 2426 if (oldoldbufptr &&
2427 oldoldbufptr < bufptr &&
2428 (oldoldbufptr == last_lop || oldoldbufptr == last_uni) &&
2429 /* NO SKIPSPACE BEFORE HERE! */
2430 (expect == XREF ||
2431 (opargs[last_lop_op] >> OASHIFT & 7) == OA_FILEREF) )
2432 {
748a9306
LW		 2433 bool immediate_paren = *s == '(';
2434
a0d0e21e
LW		 2435 /* (Now we can afford to cross potential line boundary.) */
2436 s = skipspace(s);
2437
2438 /* Two barewords in a row may indicate method call. */
2439
2440 if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv)))
2441 return tmp;
2442
2443 /* If not a declared subroutine, it's an indirect object. */
2444 /* (But it's an indir obj regardless for sort.) */
2445
8e07c86e
AD		 2446 if ((last_lop_op == OP_SORT ||
2447 (!immediate_paren && (!gv || !GvCV(gv))) ) &&
2448 (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){
748a9306
LW		 2449 expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR;
2450 goto bareword;
93a17b20
LW		 2451 }
2452 }
8990e307
LW		 2453
2454 /* If followed by a paren, it's certainly a subroutine. */
2455
2456 expect = XOPERATOR;
2457 s = skipspace(s);
93a17b20 2458 if (*s == '(') {
79072805 2459 CLINE;
a0d0e21e 2460 nextval[nexttoke].opval = yylval.opval;
463ee0b2 2461 expect = XOPERATOR;
93a17b20 2462 force_next(WORD);
c07a80fd 2463 yylval.ival = 0;
463ee0b2 2464 TOKEN('&');
79072805 2465 }
93a17b20 2466
a0d0e21e 2467 /* If followed by var or block, call it a method (unless sub) */
8990e307
LW		 2468
2469 if ((*s == '$' || *s == '{') && (!gv || !GvCV(gv))) {
463ee0b2 2470 last_lop = oldbufptr;
8990e307 2471 last_lop_op = OP_METHOD;
93a17b20 2472 PREBLOCK(METHOD);
463ee0b2
LW		 2473 }
2474
8990e307
LW		 2475 /* If followed by a bareword, see if it looks like indir obj. */
2476
a0d0e21e
LW		 2477 if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv)))
2478 return tmp;
93a17b20 2479
8990e307
LW		 2480 /* Not a method, so call it a subroutine (if defined) */
2481
2482 if (gv && GvCV(gv)) {
4633a7c4 2483 CV* cv = GvCV(gv);
8990e307 2484 if (*s == '(') {
a5f75d66 2485 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2486 expect = XTERM;
2487 force_next(WORD);
c07a80fd 2488 yylval.ival = 0;
8990e307
LW		 2489 TOKEN('&');
2490 }
748a9306 2491 if (lastchar == '-')
c2960299 2492 warn("Ambiguous use of -%s resolved as -&%s()",
748a9306 2493 tokenbuf, tokenbuf);
8990e307 2494 last_lop = oldbufptr;
a0d0e21e 2495 last_lop_op = OP_ENTERSUB;
89bfa8cd 2496 /* Check for a constant sub */
760ac839
LW		 2497 {
2498 SV *sv = cv_const_sv(cv);
89bfa8cd 2499 if (sv) {
2500 SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv);
2501 ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv);
2502 yylval.opval->op_private = 0;
2503 TOKEN(WORD);
2504 }
2505 }
2506
a5f75d66
AD		 2507 /* Resolve to GV now. */
2508 op_free(yylval.opval);
2509 yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
4633a7c4
LW		 2510 /* Is there a prototype? */
2511 if (SvPOK(cv)) {
2512 STRLEN len;
2513 char *proto = SvPV((SV*)cv, len);
2514 if (!len)
2515 TERM(FUNC0SUB);
2516 if (strEQ(proto, "$"))
2517 OPERATOR(UNIOPSUB);
2518 if (*proto == '&' && *s == '{') {
2519 sv_setpv(subname,"__ANON__");
2520 PREBLOCK(LSTOPSUB);
2521 }
2522 }
a5f75d66 2523 nextval[nexttoke].opval = yylval.opval;
8990e307
LW		 2524 expect = XTERM;
2525 force_next(WORD);
2526 TOKEN(NOAMP);
2527 }
748a9306
LW		 2528
2529 if (hints & HINT_STRICT_SUBS &&
2530 lastchar != '-' &&
a0d0e21e 2531 strnNE(s,"->",2) &&
9b01e405 2532 last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */
a0d0e21e
LW		 2533 last_lop_op != OP_ACCEPT &&
2534 last_lop_op != OP_PIPE_OP &&
2535 last_lop_op != OP_SOCKPAIR)
2536 {
2537 warn(
2538 "Bareword \"%s\" not allowed while \"strict subs\" in use",
85e6fe83
LW		 2539 tokenbuf);
2540 ++error_count;
2541 }
8990e307
LW		 2542
2543 /* Call it a bare word */
2544
748a9306
LW		 2545 bareword:
2546 if (dowarn) {
2547 if (lastchar != '-') {
2548 for (d = tokenbuf; *d && isLOWER(*d); d++) ;
2549 if (!*d)
2550 warn(warn_reserved, tokenbuf);
2551 }
2552 }
2553 if (lastchar && strchr("*%&", lastchar)) {
2554 warn("Operator or semicolon missing before %c%s",
2555 lastchar, tokenbuf);
c2960299 2556 warn("Ambiguous use of %c resolved as operator %c",
748a9306
LW		 2557 lastchar, lastchar);
2558 }
93a17b20 2559 TOKEN(WORD);
79072805 2560 }
79072805
LW		 2561
2562 case KEY___LINE__:
2563 case KEY___FILE__: {
2564 if (tokenbuf[2] == 'L')
2565 (void)sprintf(tokenbuf,"%ld",(long)curcop->cop_line);
2566 else
463ee0b2 2567 strcpy(tokenbuf, SvPVX(GvSV(curcop->cop_filegv)));
79072805
LW		 2568 yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0));
2569 TERM(THING);
2570 }
2571
e50aee73 2572 case KEY___DATA__:
79072805
LW		 2573 case KEY___END__: {
2574 GV *gv;
79072805
LW		 2575
2576 /*SUPPRESS 560*/
a5f75d66 2577 if (rsfp && (!in_eval || tokenbuf[2] == 'D')) {
e50aee73
AD		 2578 char dname[256];
2579 char *pname = "main";
2580 if (tokenbuf[2] == 'D')
2581 pname = HvNAME(curstash ? curstash : defstash);
2582 sprintf(dname,"%s::DATA", pname);
2583 gv = gv_fetchpv(dname,TRUE, SVt_PVIO);
a5f75d66 2584 GvMULTI_on(gv);
79072805 2585 if (!GvIO(gv))
a0d0e21e
LW		 2586 GvIOp(gv) = newIO();
2587 IoIFP(GvIOp(gv)) = rsfp;
2588#if defined(HAS_FCNTL) && defined(F_SETFD)
2589 {
760ac839 2590 int fd = PerlIO_fileno(rsfp);
a0d0e21e
LW		 2591 fcntl(fd,F_SETFD,fd >= 3);
2592 }
79072805 2593#endif
fd049845 2594 /* Mark this internal pseudo-handle as clean */
2595 IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT;
79072805 2596 if (preprocess)
a0d0e21e 2597 IoTYPE(GvIOp(gv)) = '|';
760ac839 2598 else if ((PerlIO*)rsfp == PerlIO_stdin())
a0d0e21e 2599 IoTYPE(GvIOp(gv)) = '-';
79072805 2600 else
a0d0e21e 2601 IoTYPE(GvIOp(gv)) = '<';
79072805
LW		 2602 rsfp = Nullfp;
2603 }
2604 goto fake_eof;
e929a76b 2605 }
de3bb511 2606
8990e307 2607 case KEY_AUTOLOAD:
ed6116ce 2608 case KEY_DESTROY:
79072805
LW		 2609 case KEY_BEGIN:
2610 case KEY_END:
a0d0e21e 2611 if (expect == XSTATE) {
93a17b20
LW		 2612 s = bufptr;
2613 goto really_sub;
79072805
LW		 2614 }
2615 goto just_a_word;
2616
a0d0e21e
LW		 2617 case KEY_CORE:
2618 if (*s == ':' && s[1] == ':') {
2619 s += 2;
748a9306 2620 d = s;
a0d0e21e
LW		 2621 s = scan_word(s, tokenbuf, FALSE, &len);
2622 tmp = keyword(tokenbuf, len);
2623 if (tmp < 0)
2624 tmp = -tmp;
2625 goto reserved_word;
2626 }
2627 goto just_a_word;
2628
463ee0b2
LW		 2629 case KEY_abs:
2630 UNI(OP_ABS);
2631
79072805
LW		 2632 case KEY_alarm:
2633 UNI(OP_ALARM);
2634
2635 case KEY_accept:
a0d0e21e 2636 LOP(OP_ACCEPT,XTERM);
79072805 2637
463ee0b2
LW		 2638 case KEY_and:
2639 OPERATOR(ANDOP);
2640
79072805 2641 case KEY_atan2:
a0d0e21e 2642 LOP(OP_ATAN2,XTERM);
85e6fe83 2643
79072805 2644 case KEY_bind:
a0d0e21e 2645 LOP(OP_BIND,XTERM);
79072805
LW		 2646
2647 case KEY_binmode:
2648 UNI(OP_BINMODE);
2649
2650 case KEY_bless:
a0d0e21e 2651 LOP(OP_BLESS,XTERM);
79072805
LW		 2652
2653 case KEY_chop:
2654 UNI(OP_CHOP);
2655
2656 case KEY_continue:
2657 PREBLOCK(CONTINUE);
2658
2659 case KEY_chdir:
85e6fe83 2660 (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */
79072805
LW		 2661 UNI(OP_CHDIR);
2662
2663 case KEY_close:
2664 UNI(OP_CLOSE);
2665
2666 case KEY_closedir:
2667 UNI(OP_CLOSEDIR);
2668
2669 case KEY_cmp:
2670 Eop(OP_SCMP);
2671
2672 case KEY_caller:
2673 UNI(OP_CALLER);
2674
2675 case KEY_crypt:
2676#ifdef FCRYPT
de3bb511
LW		 2677 if (!cryptseen++)
2678 init_des();
a687059c 2679#endif
a0d0e21e 2680 LOP(OP_CRYPT,XTERM);
79072805
LW		 2681
2682 case KEY_chmod:
748a9306
LW		 2683 if (dowarn) {
2684 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
2685 if (*d != '0' && isDIGIT(*d))
2686 yywarn("chmod: mode argument is missing initial 0");
2687 }
a0d0e21e 2688 LOP(OP_CHMOD,XTERM);
79072805
LW		 2689
2690 case KEY_chown:
a0d0e21e 2691 LOP(OP_CHOWN,XTERM);
79072805
LW		 2692
2693 case KEY_connect:
a0d0e21e 2694 LOP(OP_CONNECT,XTERM);
79072805 2695
463ee0b2
LW		 2696 case KEY_chr:
2697 UNI(OP_CHR);
2698
79072805
LW		 2699 case KEY_cos:
2700 UNI(OP_COS);
2701
2702 case KEY_chroot:
2703 UNI(OP_CHROOT);
2704
2705 case KEY_do:
2706 s = skipspace(s);
2707 if (*s == '{')
a0d0e21e 2708 PRETERMBLOCK(DO);
79072805 2709 if (*s != '\'')
a0d0e21e 2710 s = force_word(s,WORD,FALSE,TRUE,FALSE);
378cc40b 2711 OPERATOR(DO);
79072805
LW		 2712
2713 case KEY_die:
a0d0e21e
LW		 2714 hints |= HINT_BLOCK_SCOPE;
2715 LOP(OP_DIE,XTERM);
79072805
LW		 2716
2717 case KEY_defined:
2718 UNI(OP_DEFINED);
2719
2720 case KEY_delete:
a0d0e21e 2721 UNI(OP_DELETE);
79072805
LW		 2722
2723 case KEY_dbmopen:
a0d0e21e
LW		 2724 gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV);
2725 LOP(OP_DBMOPEN,XTERM);
79072805
LW		 2726
2727 case KEY_dbmclose:
2728 UNI(OP_DBMCLOSE);
2729
2730 case KEY_dump:
a0d0e21e 2731 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2732 LOOPX(OP_DUMP);
2733
2734 case KEY_else:
2735 PREBLOCK(ELSE);
2736
2737 case KEY_elsif:
2738 yylval.ival = curcop->cop_line;
2739 OPERATOR(ELSIF);
2740
2741 case KEY_eq:
2742 Eop(OP_SEQ);
2743
a0d0e21e
LW		 2744 case KEY_exists:
2745 UNI(OP_EXISTS);
2746
79072805
LW		 2747 case KEY_exit:
2748 UNI(OP_EXIT);
2749
2750 case KEY_eval:
79072805 2751 s = skipspace(s);
a0d0e21e 2752 expect = (*s == '{') ? XTERMBLOCK : XTERM;
463ee0b2 2753 UNIBRACK(OP_ENTEREVAL);
79072805
LW		 2754
2755 case KEY_eof:
2756 UNI(OP_EOF);
2757
2758 case KEY_exp:
2759 UNI(OP_EXP);
2760
2761 case KEY_each:
2762 UNI(OP_EACH);
2763
2764 case KEY_exec:
2765 set_csh();
a0d0e21e 2766 LOP(OP_EXEC,XREF);
79072805
LW		 2767
2768 case KEY_endhostent:
2769 FUN0(OP_EHOSTENT);
2770
2771 case KEY_endnetent:
2772 FUN0(OP_ENETENT);
2773
2774 case KEY_endservent:
2775 FUN0(OP_ESERVENT);
2776
2777 case KEY_endprotoent:
2778 FUN0(OP_EPROTOENT);
2779
2780 case KEY_endpwent:
2781 FUN0(OP_EPWENT);
2782
2783 case KEY_endgrent:
2784 FUN0(OP_EGRENT);
2785
2786 case KEY_for:
2787 case KEY_foreach:
2788 yylval.ival = curcop->cop_line;
55497cff 2789 s = skipspace(s);
2790 if (isIDFIRST(*s)) {
2791 char *p = s;
2792 if ((bufend - p) >= 3 &&
2793 strnEQ(p, "my", 2) && isSPACE(*(p + 2)))
2794 p += 2;
2795 p = skipspace(p);
2796 if (isIDFIRST(*p))
2797 croak("Missing $ on loop variable");
2798 }
79072805
LW		 2799 OPERATOR(FOR);
2800
2801 case KEY_formline:
a0d0e21e 2802 LOP(OP_FORMLINE,XTERM);
79072805
LW		 2803
2804 case KEY_fork:
2805 FUN0(OP_FORK);
2806
2807 case KEY_fcntl:
a0d0e21e 2808 LOP(OP_FCNTL,XTERM);
79072805
LW		 2809
2810 case KEY_fileno:
2811 UNI(OP_FILENO);
2812
2813 case KEY_flock:
a0d0e21e 2814 LOP(OP_FLOCK,XTERM);
79072805
LW		 2815
2816 case KEY_gt:
2817 Rop(OP_SGT);
2818
2819 case KEY_ge:
2820 Rop(OP_SGE);
2821
2822 case KEY_grep:
a0d0e21e 2823 LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF);
79072805
LW		 2824
2825 case KEY_goto:
a0d0e21e 2826 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 2827 LOOPX(OP_GOTO);
2828
2829 case KEY_gmtime:
2830 UNI(OP_GMTIME);
2831
2832 case KEY_getc:
2833 UNI(OP_GETC);
2834
2835 case KEY_getppid:
2836 FUN0(OP_GETPPID);
2837
2838 case KEY_getpgrp:
2839 UNI(OP_GETPGRP);
2840
2841 case KEY_getpriority:
a0d0e21e 2842 LOP(OP_GETPRIORITY,XTERM);
79072805
LW		 2843
2844 case KEY_getprotobyname:
2845 UNI(OP_GPBYNAME);
2846
2847 case KEY_getprotobynumber:
a0d0e21e 2848 LOP(OP_GPBYNUMBER,XTERM);
79072805
LW		 2849
2850 case KEY_getprotoent:
2851 FUN0(OP_GPROTOENT);
2852
2853 case KEY_getpwent:
2854 FUN0(OP_GPWENT);
2855
2856 case KEY_getpwnam:
ff68c719 2857 UNI(OP_GPWNAM);
79072805
LW		 2858
2859 case KEY_getpwuid:
ff68c719 2860 UNI(OP_GPWUID);
79072805
LW		 2861
2862 case KEY_getpeername:
2863 UNI(OP_GETPEERNAME);
2864
2865 case KEY_gethostbyname:
2866 UNI(OP_GHBYNAME);
2867
2868 case KEY_gethostbyaddr:
a0d0e21e 2869 LOP(OP_GHBYADDR,XTERM);
79072805
LW		 2870
2871 case KEY_gethostent:
2872 FUN0(OP_GHOSTENT);
2873
2874 case KEY_getnetbyname:
2875 UNI(OP_GNBYNAME);
2876
2877 case KEY_getnetbyaddr:
a0d0e21e 2878 LOP(OP_GNBYADDR,XTERM);
79072805
LW		 2879
2880 case KEY_getnetent:
2881 FUN0(OP_GNETENT);
2882
2883 case KEY_getservbyname:
a0d0e21e 2884 LOP(OP_GSBYNAME,XTERM);
79072805
LW		 2885
2886 case KEY_getservbyport:
a0d0e21e 2887 LOP(OP_GSBYPORT,XTERM);
79072805
LW		 2888
2889 case KEY_getservent:
2890 FUN0(OP_GSERVENT);
2891
2892 case KEY_getsockname:
2893 UNI(OP_GETSOCKNAME);
2894
2895 case KEY_getsockopt:
a0d0e21e 2896 LOP(OP_GSOCKOPT,XTERM);
79072805
LW		 2897
2898 case KEY_getgrent:
2899 FUN0(OP_GGRENT);
2900
2901 case KEY_getgrnam:
ff68c719 2902 UNI(OP_GGRNAM);
79072805
LW		 2903
2904 case KEY_getgrgid:
ff68c719 2905 UNI(OP_GGRGID);
79072805
LW		 2906
2907 case KEY_getlogin:
2908 FUN0(OP_GETLOGIN);
2909
93a17b20 2910 case KEY_glob:
a0d0e21e
LW		 2911 set_csh();
2912 LOP(OP_GLOB,XTERM);
93a17b20 2913
79072805
LW		 2914 case KEY_hex:
2915 UNI(OP_HEX);
2916
2917 case KEY_if:
2918 yylval.ival = curcop->cop_line;
71be2cbc 2919 OPERATOR(IF);
79072805
LW		 2920
2921 case KEY_index:
a0d0e21e 2922 LOP(OP_INDEX,XTERM);
79072805
LW		 2923
2924 case KEY_int:
2925 UNI(OP_INT);
2926
2927 case KEY_ioctl:
a0d0e21e 2928 LOP(OP_IOCTL,XTERM);
79072805
LW		 2929
2930 case KEY_join:
a0d0e21e 2931 LOP(OP_JOIN,XTERM);
79072805
LW		 2932
2933 case KEY_keys:
2934 UNI(OP_KEYS);
2935
2936 case KEY_kill:
a0d0e21e 2937 LOP(OP_KILL,XTERM);
79072805
LW		 2938
2939 case KEY_last:
a0d0e21e 2940 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805 2941 LOOPX(OP_LAST);
a0d0e21e 2942
79072805
LW		 2943 case KEY_lc:
2944 UNI(OP_LC);
2945
2946 case KEY_lcfirst:
2947 UNI(OP_LCFIRST);
2948
2949 case KEY_local:
2950 OPERATOR(LOCAL);
2951
2952 case KEY_length:
2953 UNI(OP_LENGTH);
2954
2955 case KEY_lt:
2956 Rop(OP_SLT);
2957
2958 case KEY_le:
2959 Rop(OP_SLE);
2960
2961 case KEY_localtime:
2962 UNI(OP_LOCALTIME);
2963
2964 case KEY_log:
2965 UNI(OP_LOG);
2966
2967 case KEY_link:
a0d0e21e 2968 LOP(OP_LINK,XTERM);
79072805
LW		 2969
2970 case KEY_listen:
a0d0e21e 2971 LOP(OP_LISTEN,XTERM);
79072805
LW		 2972
2973 case KEY_lstat:
2974 UNI(OP_LSTAT);
2975
2976 case KEY_m:
2977 s = scan_pat(s);
2978 TERM(sublex_start());
2979
a0d0e21e
LW		 2980 case KEY_map:
2981 LOP(OP_MAPSTART,XREF);
2982
79072805 2983 case KEY_mkdir:
a0d0e21e 2984 LOP(OP_MKDIR,XTERM);
79072805
LW		 2985
2986 case KEY_msgctl:
a0d0e21e 2987 LOP(OP_MSGCTL,XTERM);
79072805
LW		 2988
2989 case KEY_msgget:
a0d0e21e 2990 LOP(OP_MSGGET,XTERM);
79072805
LW		 2991
2992 case KEY_msgrcv:
a0d0e21e 2993 LOP(OP_MSGRCV,XTERM);
79072805
LW		 2994
2995 case KEY_msgsnd:
a0d0e21e 2996 LOP(OP_MSGSND,XTERM);
79072805 2997
93a17b20
LW		 2998 case KEY_my:
2999 in_my = TRUE;
55497cff 3000 OPERATOR(MY);
93a17b20 3001
79072805 3002 case KEY_next:
a0d0e21e 3003 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3004 LOOPX(OP_NEXT);
3005
3006 case KEY_ne:
3007 Eop(OP_SNE);
3008
a0d0e21e
LW		 3009 case KEY_no:
3010 if (expect != XSTATE)
3011 yyerror("\"no\" not allowed in expression");
3012 s = force_word(s,WORD,FALSE,TRUE,FALSE);
89bfa8cd 3013 s = force_version(s);
a0d0e21e
LW		 3014 yylval.ival = 0;
3015 OPERATOR(USE);
3016
3017 case KEY_not:
3018 OPERATOR(NOTOP);
3019
79072805 3020 case KEY_open:
93a17b20
LW		 3021 s = skipspace(s);
3022 if (isIDFIRST(*s)) {
3023 char *t;
3024 for (d = s; isALNUM(*d); d++) ;
3025 t = skipspace(d);
3026 if (strchr("|&*+-=!?:.", *t))
3027 warn("Precedence problem: open %.*s should be open(%.*s)",
3028 d-s,s, d-s,s);
3029 }
a0d0e21e 3030 LOP(OP_OPEN,XTERM);
79072805 3031
463ee0b2 3032 case KEY_or:
a0d0e21e 3033 yylval.ival = OP_OR;
463ee0b2
LW		 3034 OPERATOR(OROP);
3035
79072805
LW		 3036 case KEY_ord:
3037 UNI(OP_ORD);
3038
3039 case KEY_oct:
3040 UNI(OP_OCT);
3041
3042 case KEY_opendir:
a0d0e21e 3043 LOP(OP_OPEN_DIR,XTERM);
79072805
LW		 3044
3045 case KEY_print:
3046 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3047 LOP(OP_PRINT,XREF);
79072805
LW		 3048
3049 case KEY_printf:
3050 checkcomma(s,tokenbuf,"filehandle");
a0d0e21e 3051 LOP(OP_PRTF,XREF);
79072805 3052
c07a80fd 3053 case KEY_prototype:
3054 UNI(OP_PROTOTYPE);
3055
79072805 3056 case KEY_push:
a0d0e21e 3057 LOP(OP_PUSH,XTERM);
79072805
LW		 3058
3059 case KEY_pop:
3060 UNI(OP_POP);
3061
a0d0e21e
LW		 3062 case KEY_pos:
3063 UNI(OP_POS);
3064
79072805 3065 case KEY_pack:
a0d0e21e 3066 LOP(OP_PACK,XTERM);
79072805
LW		 3067
3068 case KEY_package:
a0d0e21e 3069 s = force_word(s,WORD,FALSE,TRUE,FALSE);
79072805
LW		 3070 OPERATOR(PACKAGE);
3071
3072 case KEY_pipe:
a0d0e21e 3073 LOP(OP_PIPE_OP,XTERM);
79072805
LW		 3074
3075 case KEY_q:
3076 s = scan_str(s);
3077 if (!s)
85e6fe83 3078 missingterm((char*)0);
79072805
LW		 3079 yylval.ival = OP_CONST;
3080 TERM(sublex_start());
3081
a0d0e21e
LW		 3082 case KEY_quotemeta:
3083 UNI(OP_QUOTEMETA);
3084
8990e307
LW		 3085 case KEY_qw:
3086 s = scan_str(s);
3087 if (!s)
85e6fe83 3088 missingterm((char*)0);
55497cff 3089 if (dowarn && SvLEN(lex_stuff)) {
3090 d = SvPV_force(lex_stuff, len);
3091 for (; len; --len, ++d) {
3092 if (*d == ',') {
3093 warn("Possible attempt to separate words with commas");
3094 break;
3095 }
3096 if (*d == '#') {
3097 warn("Possible attempt to put comments in qw() list");
3098 break;
3099 }
3100 }
3101 }
8990e307
LW		 3102 force_next(')');
3103 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff));
3104 lex_stuff = Nullsv;
3105 force_next(THING);
3106 force_next(',');
3107 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1));
3108 force_next(THING);
3109 force_next('(');
a0d0e21e
LW		 3110 yylval.ival = OP_SPLIT;
3111 CLINE;
3112 expect = XTERM;
3113 bufptr = s;
3114 last_lop = oldbufptr;
3115 last_lop_op = OP_SPLIT;
3116 return FUNC;
8990e307 3117
79072805
LW		 3118 case KEY_qq:
3119 s = scan_str(s);
3120 if (!s)
85e6fe83 3121 missingterm((char*)0);
a0d0e21e 3122 yylval.ival = OP_STRINGIFY;
ed6116ce
LW		 3123 if (SvIVX(lex_stuff) == '\'')
3124 SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */
79072805
LW		 3125 TERM(sublex_start());
3126
3127 case KEY_qx:
3128 s = scan_str(s);
3129 if (!s)
85e6fe83 3130 missingterm((char*)0);
79072805
LW		 3131 yylval.ival = OP_BACKTICK;
3132 set_csh();
3133 TERM(sublex_start());
3134
3135 case KEY_return:
3136 OLDLOP(OP_RETURN);
3137
3138 case KEY_require:
748a9306 3139 *tokenbuf = '\0';
a0d0e21e 3140 s = force_word(s,WORD,TRUE,TRUE,FALSE);
748a9306 3141 if (isIDFIRST(*tokenbuf))
89bfa8cd 3142 gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE);
748a9306 3143 else if (*s == '<')
a0d0e21e 3144 yyerror("<> should be quotes");
463ee0b2 3145 UNI(OP_REQUIRE);
79072805
LW		 3146
3147 case KEY_reset:
3148 UNI(OP_RESET);
3149
3150 case KEY_redo:
a0d0e21e 3151 s = force_word(s,WORD,TRUE,FALSE,FALSE);
79072805
LW		 3152 LOOPX(OP_REDO);
3153
3154 case KEY_rename:
a0d0e21e 3155 LOP(OP_RENAME,XTERM);
79072805
LW		 3156
3157 case KEY_rand:
3158 UNI(OP_RAND);
3159
3160 case KEY_rmdir:
3161 UNI(OP_RMDIR);
3162
3163 case KEY_rindex:
a0d0e21e 3164 LOP(OP_RINDEX,XTERM);
79072805
LW		 3165
3166 case KEY_read:
a0d0e21e 3167 LOP(OP_READ,XTERM);
79072805
LW		 3168
3169 case KEY_readdir:
3170 UNI(OP_READDIR);
3171
93a17b20
LW		 3172 case KEY_readline:
3173 set_csh();
3174 UNI(OP_READLINE);
3175
3176 case KEY_readpipe:
3177 set_csh();
3178 UNI(OP_BACKTICK);
3179
79072805
LW		 3180 case KEY_rewinddir:
3181 UNI(OP_REWINDDIR);
3182
3183 case KEY_recv:
a0d0e21e 3184 LOP(OP_RECV,XTERM);
79072805
LW		 3185
3186 case KEY_reverse:
a0d0e21e 3187 LOP(OP_REVERSE,XTERM);
79072805
LW		 3188
3189 case KEY_readlink:
3190 UNI(OP_READLINK);
3191
3192 case KEY_ref:
3193 UNI(OP_REF);
3194
3195 case KEY_s:
3196 s = scan_subst(s);
3197 if (yylval.opval)
3198 TERM(sublex_start());
3199 else
3200 TOKEN(1); /* force error */
3201
a0d0e21e
LW		 3202 case KEY_chomp:
3203 UNI(OP_CHOMP);
3204
79072805
LW		 3205 case KEY_scalar:
3206 UNI(OP_SCALAR);
3207
3208 case KEY_select:
a0d0e21e 3209 LOP(OP_SELECT,XTERM);
79072805
LW		 3210
3211 case KEY_seek:
a0d0e21e 3212 LOP(OP_SEEK,XTERM);
79072805
LW		 3213
3214 case KEY_semctl:
a0d0e21e 3215 LOP(OP_SEMCTL,XTERM);
79072805
LW		 3216
3217 case KEY_semget:
a0d0e21e 3218 LOP(OP_SEMGET,XTERM);
79072805
LW		 3219
3220 case KEY_semop:
a0d0e21e 3221 LOP(OP_SEMOP,XTERM);
79072805
LW		 3222
3223 case KEY_send:
a0d0e21e 3224 LOP(OP_SEND,XTERM);
79072805
LW		 3225
3226 case KEY_setpgrp:
a0d0e21e 3227 LOP(OP_SETPGRP,XTERM);
79072805
LW		 3228
3229 case KEY_setpriority:
a0d0e21e 3230 LOP(OP_SETPRIORITY,XTERM);
79072805
LW		 3231
3232 case KEY_sethostent:
ff68c719 3233 UNI(OP_SHOSTENT);
79072805
LW		 3234
3235 case KEY_setnetent:
ff68c719 3236 UNI(OP_SNETENT);
79072805
LW		 3237
3238 case KEY_setservent:
ff68c719 3239 UNI(OP_SSERVENT);
79072805
LW		 3240
3241 case KEY_setprotoent:
ff68c719 3242 UNI(OP_SPROTOENT);
79072805
LW		 3243
3244 case KEY_setpwent:
3245 FUN0(OP_SPWENT);
3246
3247 case KEY_setgrent:
3248 FUN0(OP_SGRENT);
3249
3250 case KEY_seekdir:
a0d0e21e 3251 LOP(OP_SEEKDIR,XTERM);
79072805
LW		 3252
3253 case KEY_setsockopt:
a0d0e21e 3254 LOP(OP_SSOCKOPT,XTERM);
79072805
LW		 3255
3256 case KEY_shift:
3257 UNI(OP_SHIFT);
3258
3259 case KEY_shmctl:
a0d0e21e 3260 LOP(OP_SHMCTL,XTERM);
79072805
LW		 3261
3262 case KEY_shmget:
a0d0e21e 3263 LOP(OP_SHMGET,XTERM);
79072805
LW		 3264
3265 case KEY_shmread:
a0d0e21e 3266 LOP(OP_SHMREAD,XTERM);
79072805
LW		 3267
3268 case KEY_shmwrite:
a0d0e21e 3269 LOP(OP_SHMWRITE,XTERM);
79072805
LW		 3270
3271 case KEY_shutdown:
a0d0e21e 3272 LOP(OP_SHUTDOWN,XTERM);
79072805
LW		 3273
3274 case KEY_sin:
3275 UNI(OP_SIN);
3276
3277 case KEY_sleep:
3278 UNI(OP_SLEEP);
3279
3280 case KEY_socket:
a0d0e21e 3281 LOP(OP_SOCKET,XTERM);
79072805
LW		 3282
3283 case KEY_socketpair:
a0d0e21e 3284 LOP(OP_SOCKPAIR,XTERM);
79072805
LW		 3285
3286 case KEY_sort:
3287 checkcomma(s,tokenbuf,"subroutine name");
3288 s = skipspace(s);
3289 if (*s == ';' || *s == ')') /* probably a close */
463ee0b2
LW		 3290 croak("sort is now a reserved word");
3291 expect = XTERM;
a0d0e21e
LW		 3292 s = force_word(s,WORD,TRUE,TRUE,TRUE);
3293 LOP(OP_SORT,XREF);
79072805
LW		 3294
3295 case KEY_split:
a0d0e21e 3296 LOP(OP_SPLIT,XTERM);
79072805
LW		 3297
3298 case KEY_sprintf:
a0d0e21e 3299 LOP(OP_SPRINTF,XTERM);
79072805
LW		 3300
3301 case KEY_splice:
a0d0e21e 3302 LOP(OP_SPLICE,XTERM);
79072805
LW		 3303
3304 case KEY_sqrt:
3305 UNI(OP_SQRT);
3306
3307 case KEY_srand:
3308 UNI(OP_SRAND);
3309
3310 case KEY_stat:
3311 UNI(OP_STAT);
3312
3313 case KEY_study:
3314 sawstudy++;
3315 UNI(OP_STUDY);
3316
3317 case KEY_substr:
a0d0e21e 3318 LOP(OP_SUBSTR,XTERM);
79072805
LW		 3319
3320 case KEY_format:
3321 case KEY_sub:
93a17b20 3322 really_sub:
79072805 3323 s = skipspace(s);
4633a7c4 3324
463ee0b2
LW		 3325 if (isIDFIRST(*s) || *s == '\'' || *s == ':') {
3326 char tmpbuf[128];
4633a7c4 3327 expect = XBLOCK;
463ee0b2
LW		 3328 d = scan_word(s, tmpbuf, TRUE, &len);
3329 if (strchr(tmpbuf, ':'))
3330 sv_setpv(subname, tmpbuf);
3331 else {
3332 sv_setsv(subname,curstname);
8990e307 3333 sv_catpvn(subname,"::",2);
463ee0b2
LW		 3334 sv_catpvn(subname,tmpbuf,len);
3335 }
a0d0e21e 3336 s = force_word(s,WORD,FALSE,TRUE,TRUE);
4633a7c4 3337 s = skipspace(s);
79072805 3338 }
4633a7c4
LW		 3339 else {
3340 expect = XTERMBLOCK;
79072805 3341 sv_setpv(subname,"?");
4633a7c4
LW		 3342 }
3343
3344 if (tmp == KEY_format) {
3345 s = skipspace(s);
3346 if (*s == '=')
3347 lex_formbrack = lex_brackets + 1;
3348 OPERATOR(FORMAT);
3349 }
79072805 3350
4633a7c4
LW		 3351 /* Look for a prototype */
3352 if (*s == '(') {
3353 s = scan_str(s);
3354 if (!s) {
3355 if (lex_stuff)
3356 SvREFCNT_dec(lex_stuff);
3357 lex_stuff = Nullsv;
3358 croak("Prototype not terminated");
3359 }
3360 nexttoke++;
3361 nextval[1] = nextval[0];
3362 nexttype[1] = nexttype[0];
3363 nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff);
3364 nexttype[0] = THING;
3365 if (nexttoke == 1) {
3366 lex_defer = lex_state;
3367 lex_expect = expect;
3368 lex_state = LEX_KNOWNEXT;
3369 }
3370 lex_stuff = Nullsv;
3371 }
79072805 3372
4633a7c4
LW		 3373 if (*SvPV(subname,na) == '?') {
3374 sv_setpv(subname,"__ANON__");
3375 TOKEN(ANONSUB);
3376 }
3377 PREBLOCK(SUB);
79072805
LW		 3378
3379 case KEY_system:
3380 set_csh();
a0d0e21e 3381 LOP(OP_SYSTEM,XREF);
79072805
LW		 3382
3383 case KEY_symlink:
a0d0e21e 3384 LOP(OP_SYMLINK,XTERM);
79072805
LW		 3385
3386 case KEY_syscall:
a0d0e21e 3387 LOP(OP_SYSCALL,XTERM);
79072805 3388
c07a80fd 3389 case KEY_sysopen:
3390 LOP(OP_SYSOPEN,XTERM);
3391
79072805 3392 case KEY_sysread:
a0d0e21e 3393 LOP(OP_SYSREAD,XTERM);
79072805
LW		 3394
3395 case KEY_syswrite:
a0d0e21e 3396 LOP(OP_SYSWRITE,XTERM);
79072805
LW		 3397
3398 case KEY_tr:
3399 s = scan_trans(s);
3400 TERM(sublex_start());
3401
3402 case KEY_tell:
3403 UNI(OP_TELL);
3404
3405 case KEY_telldir:
3406 UNI(OP_TELLDIR);
3407
463ee0b2 3408 case KEY_tie:
a0d0e21e 3409 LOP(OP_TIE,XTERM);
463ee0b2 3410
c07a80fd 3411 case KEY_tied:
3412 UNI(OP_TIED);
3413
79072805
LW		 3414 case KEY_time:
3415 FUN0(OP_TIME);
3416
3417 case KEY_times:
3418 FUN0(OP_TMS);
3419
3420 case KEY_truncate:
a0d0e21e 3421 LOP(OP_TRUNCATE,XTERM);
79072805
LW		 3422
3423 case KEY_uc:
3424 UNI(OP_UC);
3425
3426 case KEY_ucfirst:
3427 UNI(OP_UCFIRST);
3428
463ee0b2
LW		 3429 case KEY_untie:
3430 UNI(OP_UNTIE);
3431
79072805
LW		 3432 case KEY_until:
3433 yylval.ival = curcop->cop_line;
71be2cbc 3434 OPERATOR(UNTIL);
79072805
LW		 3435
3436 case KEY_unless:
3437 yylval.ival = curcop->cop_line;
71be2cbc 3438 OPERATOR(UNLESS);
79072805
LW		 3439
3440 case KEY_unlink:
a0d0e21e 3441 LOP(OP_UNLINK,XTERM);
79072805
LW		 3442
3443 case KEY_undef:
3444 UNI(OP_UNDEF);
3445
3446 case KEY_unpack:
a0d0e21e 3447 LOP(OP_UNPACK,XTERM);
79072805
LW		 3448
3449 case KEY_utime:
a0d0e21e 3450 LOP(OP_UTIME,XTERM);
79072805
LW		 3451
3452 case KEY_umask:
748a9306
LW		 3453 if (dowarn) {
3454 for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ;
3455 if (*d != '0' && isDIGIT(*d))
3456 yywarn("umask: argument is missing initial 0");
3457 }
79072805
LW		 3458 UNI(OP_UMASK);
3459
3460 case KEY_unshift:
a0d0e21e
LW		 3461 LOP(OP_UNSHIFT,XTERM);
3462
3463 case KEY_use:
3464 if (expect != XSTATE)
3465 yyerror("\"use\" not allowed in expression");
89bfa8cd 3466 s = skipspace(s);
3467 if(isDIGIT(*s)) {
3468 s = force_version(s);
3469 if(*s == ';' || (s = skipspace(s), *s == ';')) {
3470 nextval[nexttoke].opval = Nullop;
3471 force_next(WORD);
3472 }
3473 }
3474 else {
3475 s = force_word(s,WORD,FALSE,TRUE,FALSE);
3476 s = force_version(s);
3477 }
a0d0e21e
LW		 3478 yylval.ival = 1;
3479 OPERATOR(USE);
79072805
LW		 3480
3481 case KEY_values:
3482 UNI(OP_VALUES);
3483
3484 case KEY_vec:
3485 sawvec = TRUE;
a0d0e21e 3486 LOP(OP_VEC,XTERM);
79072805
LW		 3487
3488 case KEY_while:
3489 yylval.ival = curcop->cop_line;
71be2cbc 3490 OPERATOR(WHILE);
79072805
LW		 3491
3492 case KEY_warn:
a0d0e21e
LW		 3493 hints |= HINT_BLOCK_SCOPE;
3494 LOP(OP_WARN,XTERM);
79072805
LW		 3495
3496 case KEY_wait:
3497 FUN0(OP_WAIT);
3498
3499 case KEY_waitpid:
a0d0e21e 3500 LOP(OP_WAITPID,XTERM);
79072805
LW		 3501
3502 case KEY_wantarray:
3503 FUN0(OP_WANTARRAY);
3504
3505 case KEY_write:
85e6fe83 3506 gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */
79072805
LW		 3507 UNI(OP_ENTERWRITE);
3508
3509 case KEY_x:
3510 if (expect == XOPERATOR)
3511 Mop(OP_REPEAT);
3512 check_uni();
3513 goto just_a_word;
3514
a0d0e21e
LW		 3515 case KEY_xor:
3516 yylval.ival = OP_XOR;
3517 OPERATOR(OROP);
3518
79072805
LW		 3519 case KEY_y:
3520 s = scan_trans(s);
3521 TERM(sublex_start());
3522 }
3523 }
3524}
3525
3526I32
3527keyword(d, len)
3528register char *d;
3529I32 len;
3530{
3531 switch (*d) {
3532 case '_':
3533 if (d[1] == '_') {
a0d0e21e
LW		 3534 if (strEQ(d,"__LINE__")) return -KEY___LINE__;
3535 if (strEQ(d,"__FILE__")) return -KEY___FILE__;
e50aee73 3536 if (strEQ(d,"__DATA__")) return KEY___DATA__;
79072805
LW		 3537 if (strEQ(d,"__END__")) return KEY___END__;
3538 }
3539 break;
8990e307
LW		 3540 case 'A':
3541 if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD;
3542 break;
79072805 3543 case 'a':
463ee0b2
LW		 3544 switch (len) {
3545 case 3:
a0d0e21e
LW		 3546 if (strEQ(d,"and")) return -KEY_and;
3547 if (strEQ(d,"abs")) return -KEY_abs;
85e6fe83 3548 break;
463ee0b2 3549 case 5:
a0d0e21e
LW		 3550 if (strEQ(d,"alarm")) return -KEY_alarm;
3551 if (strEQ(d,"atan2")) return -KEY_atan2;
463ee0b2
LW		 3552 break;
3553 case 6:
a0d0e21e 3554 if (strEQ(d,"accept")) return -KEY_accept;
463ee0b2
LW		 3555 break;
3556 }
79072805
LW		 3557 break;
3558 case 'B':
3559 if (strEQ(d,"BEGIN")) return KEY_BEGIN;
93a17b20 3560 break;
79072805 3561 case 'b':
a0d0e21e
LW		 3562 if (strEQ(d,"bless")) return -KEY_bless;
3563 if (strEQ(d,"bind")) return -KEY_bind;
3564 if (strEQ(d,"binmode")) return -KEY_binmode;
3565 break;
3566 case 'C':
3567 if (strEQ(d,"CORE")) return -KEY_CORE;
79072805
LW		 3568 break;
3569 case 'c':
3570 switch (len) {
3571 case 3:
a0d0e21e
LW		 3572 if (strEQ(d,"cmp")) return -KEY_cmp;
3573 if (strEQ(d,"chr")) return -KEY_chr;
3574 if (strEQ(d,"cos")) return -KEY_cos;
79072805
LW		 3575 break;
3576 case 4:
3577 if (strEQ(d,"chop")) return KEY_chop;
3578 break;
3579 case 5:
a0d0e21e
LW		 3580 if (strEQ(d,"close")) return -KEY_close;
3581 if (strEQ(d,"chdir")) return -KEY_chdir;
3582 if (strEQ(d,"chomp")) return KEY_chomp;
3583 if (strEQ(d,"chmod")) return -KEY_chmod;
3584 if (strEQ(d,"chown")) return -KEY_chown;
3585 if (strEQ(d,"crypt")) return -KEY_crypt;
79072805
LW		 3586 break;
3587 case 6:
a0d0e21e
LW		 3588 if (strEQ(d,"chroot")) return -KEY_chroot;
3589 if (strEQ(d,"caller")) return -KEY_caller;
79072805
LW		 3590 break;
3591 case 7:
a0d0e21e 3592 if (strEQ(d,"connect")) return -KEY_connect;
79072805
LW		 3593 break;
3594 case 8:
a0d0e21e
LW		 3595 if (strEQ(d,"closedir")) return -KEY_closedir;
3596 if (strEQ(d,"continue")) return -KEY_continue;
79072805
LW		 3597 break;
3598 }
3599 break;
ed6116ce
LW		 3600 case 'D':
3601 if (strEQ(d,"DESTROY")) return KEY_DESTROY;
3602 break;
79072805
LW		 3603 case 'd':
3604 switch (len) {
3605 case 2:
3606 if (strEQ(d,"do")) return KEY_do;
3607 break;
3608 case 3:
a0d0e21e 3609 if (strEQ(d,"die")) return -KEY_die;
79072805
LW		 3610 break;
3611 case 4:
a0d0e21e 3612 if (strEQ(d,"dump")) return -KEY_dump;
79072805
LW		 3613 break;
3614 case 6:
3615 if (strEQ(d,"delete")) return KEY_delete;
3616 break;
3617 case 7:
3618 if (strEQ(d,"defined")) return KEY_defined;
a0d0e21e 3619 if (strEQ(d,"dbmopen")) return -KEY_dbmopen;
79072805
LW		 3620 break;
3621 case 8:
a0d0e21e 3622 if (strEQ(d,"dbmclose")) return -KEY_dbmclose;
79072805
LW		 3623 break;
3624 }
3625 break;
3626 case 'E':
a0d0e21e 3627 if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;}
79072805
LW		 3628 if (strEQ(d,"END")) return KEY_END;
3629 break;
3630 case 'e':
3631 switch (len) {
3632 case 2:
a0d0e21e 3633 if (strEQ(d,"eq")) return -KEY_eq;
79072805
LW		 3634 break;
3635 case 3:
a0d0e21e
LW		 3636 if (strEQ(d,"eof")) return -KEY_eof;
3637 if (strEQ(d,"exp")) return -KEY_exp;
79072805
LW		 3638 break;
3639 case 4:
3640 if (strEQ(d,"else")) return KEY_else;
a0d0e21e 3641 if (strEQ(d,"exit")) return -KEY_exit;
79072805 3642 if (strEQ(d,"eval")) return KEY_eval;
a0d0e21e 3643 if (strEQ(d,"exec")) return -KEY_exec;
79072805
LW		 3644 if (strEQ(d,"each")) return KEY_each;
3645 break;
3646 case 5:
3647 if (strEQ(d,"elsif")) return KEY_elsif;
3648 break;
a0d0e21e
LW		 3649 case 6:
3650 if (strEQ(d,"exists")) return KEY_exists;
4633a7c4 3651 if (strEQ(d,"elseif")) warn("elseif should be elsif");
a0d0e21e 3652 break;
79072805 3653 case 8:
a0d0e21e
LW		 3654 if (strEQ(d,"endgrent")) return -KEY_endgrent;
3655 if (strEQ(d,"endpwent")) return -KEY_endpwent;
79072805
LW		 3656 break;
3657 case 9:
a0d0e21e 3658 if (strEQ(d,"endnetent")) return -KEY_endnetent;
79072805
LW		 3659 break;
3660 case 10:
a0d0e21e
LW		 3661 if (strEQ(d,"endhostent")) return -KEY_endhostent;
3662 if (strEQ(d,"endservent")) return -KEY_endservent;
79072805
LW		 3663 break;
3664 case 11:
a0d0e21e 3665 if (strEQ(d,"endprotoent")) return -KEY_endprotoent;
79072805 3666 break;
a687059c 3667 }
a687059c 3668 break;
79072805
LW		 3669 case 'f':
3670 switch (len) {
3671 case 3:
3672 if (strEQ(d,"for")) return KEY_for;
3673 break;
3674 case 4:
a0d0e21e 3675 if (strEQ(d,"fork")) return -KEY_fork;
79072805
LW		 3676 break;
3677 case 5:
a0d0e21e
LW		 3678 if (strEQ(d,"fcntl")) return -KEY_fcntl;
3679 if (strEQ(d,"flock")) return -KEY_flock;
79072805
LW		 3680 break;
3681 case 6:
3682 if (strEQ(d,"format")) return KEY_format;
a0d0e21e 3683 if (strEQ(d,"fileno")) return -KEY_fileno;
79072805
LW		 3684 break;
3685 case 7:
3686 if (strEQ(d,"foreach")) return KEY_foreach;
3687 break;
3688 case 8:
a0d0e21e 3689 if (strEQ(d,"formline")) return -KEY_formline;
79072805 3690 break;
378cc40b 3691 }
a687059c 3692 break;
79072805
LW		 3693 case 'G':
3694 if (len == 2) {
a0d0e21e
LW		 3695 if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;}
3696 if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;}
9f68db38 3697 }
a687059c 3698 break;
79072805 3699 case 'g':
a687059c
LW		 3700 if (strnEQ(d,"get",3)) {
3701 d += 3;
3702 if (*d == 'p') {
79072805
LW		 3703 switch (len) {
3704 case 7:
a0d0e21e
LW		 3705 if (strEQ(d,"ppid")) return -KEY_getppid;
3706 if (strEQ(d,"pgrp")) return -KEY_getpgrp;
79072805
LW		 3707 break;
3708 case 8:
a0d0e21e
LW		 3709 if (strEQ(d,"pwent")) return -KEY_getpwent;
3710 if (strEQ(d,"pwnam")) return -KEY_getpwnam;
3711 if (strEQ(d,"pwuid")) return -KEY_getpwuid;
79072805
LW		 3712 break;
3713 case 11:
a0d0e21e
LW		 3714 if (strEQ(d,"peername")) return -KEY_getpeername;
3715 if (strEQ(d,"protoent")) return -KEY_getprotoent;
3716 if (strEQ(d,"priority")) return -KEY_getpriority;
79072805
LW		 3717 break;
3718 case 14:
a0d0e21e 3719 if (strEQ(d,"protobyname")) return -KEY_getprotobyname;
79072805
LW		 3720 break;
3721 case 16:
a0d0e21e 3722 if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber;
79072805
LW		 3723 break;
3724 }
a687059c
LW		 3725 }
3726 else if (*d == 'h') {
a0d0e21e
LW		 3727 if (strEQ(d,"hostbyname")) return -KEY_gethostbyname;
3728 if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr;
3729 if (strEQ(d,"hostent")) return -KEY_gethostent;
a687059c
LW		 3730 }
3731 else if (*d == 'n') {
a0d0e21e
LW		 3732 if (strEQ(d,"netbyname")) return -KEY_getnetbyname;
3733 if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr;
3734 if (strEQ(d,"netent")) return -KEY_getnetent;
a687059c
LW		 3735 }
3736 else if (*d == 's') {
a0d0e21e
LW		 3737 if (strEQ(d,"servbyname")) return -KEY_getservbyname;
3738 if (strEQ(d,"servbyport")) return -KEY_getservbyport;
3739 if (strEQ(d,"servent")) return -KEY_getservent;
3740 if (strEQ(d,"sockname")) return -KEY_getsockname;
3741 if (strEQ(d,"sockopt")) return -KEY_getsockopt;
a687059c
LW		 3742 }
3743 else if (*d == 'g') {
a0d0e21e
LW		 3744 if (strEQ(d,"grent")) return -KEY_getgrent;
3745 if (strEQ(d,"grnam")) return -KEY_getgrnam;
3746 if (strEQ(d,"grgid")) return -KEY_getgrgid;
a687059c
LW		 3747 }
3748 else if (*d == 'l') {
a0d0e21e 3749 if (strEQ(d,"login")) return -KEY_getlogin;
a687059c 3750 }
a0d0e21e 3751 else if (strEQ(d,"c")) return -KEY_getc;
79072805 3752 break;
a687059c 3753 }
79072805
LW		 3754 switch (len) {
3755 case 2:
a0d0e21e
LW		 3756 if (strEQ(d,"gt")) return -KEY_gt;
3757 if (strEQ(d,"ge")) return -KEY_ge;
79072805
LW		 3758 break;
3759 case 4:
3760 if (strEQ(d,"grep")) return KEY_grep;
3761 if (strEQ(d,"goto")) return KEY_goto;
a0d0e21e 3762 if (strEQ(d,"glob")) return -KEY_glob;
79072805
LW		 3763 break;
3764 case 6:
a0d0e21e 3765 if (strEQ(d,"gmtime")) return -KEY_gmtime;
79072805 3766 break;
378cc40b 3767 }
a687059c 3768 break;
79072805 3769 case 'h':
a0d0e21e 3770 if (strEQ(d,"hex")) return -KEY_hex;
a687059c 3771 break;
79072805
LW		 3772 case 'i':
3773 switch (len) {
3774 case 2:
3775 if (strEQ(d,"if")) return KEY_if;
3776 break;
3777 case 3:
a0d0e21e 3778 if (strEQ(d,"int")) return -KEY_int;
79072805
LW		 3779 break;
3780 case 5:
a0d0e21e
LW		 3781 if (strEQ(d,"index")) return -KEY_index;
3782 if (strEQ(d,"ioctl")) return -KEY_ioctl;
79072805
LW		 3783 break;
3784 }
a687059c 3785 break;
79072805 3786 case 'j':
a0d0e21e 3787 if (strEQ(d,"join")) return -KEY_join;
a687059c 3788 break;
79072805
LW		 3789 case 'k':
3790 if (len == 4) {
3791 if (strEQ(d,"keys")) return KEY_keys;
a0d0e21e 3792 if (strEQ(d,"kill")) return -KEY_kill;
663a0e37 3793 }
79072805
LW		 3794 break;
3795 case 'L':
3796 if (len == 2) {
a0d0e21e
LW		 3797 if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;}
3798 if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;}
378cc40b 3799 }
79072805
LW		 3800 break;
3801 case 'l':
3802 switch (len) {
3803 case 2:
a0d0e21e
LW		 3804 if (strEQ(d,"lt")) return -KEY_lt;
3805 if (strEQ(d,"le")) return -KEY_le;
3806 if (strEQ(d,"lc")) return -KEY_lc;
79072805
LW		 3807 break;
3808 case 3:
a0d0e21e 3809 if (strEQ(d,"log")) return -KEY_log;
79072805
LW		 3810 break;
3811 case 4:
3812 if (strEQ(d,"last")) return KEY_last;
a0d0e21e 3813 if (strEQ(d,"link")) return -KEY_link;
395c3793 3814 break;
79072805
LW		 3815 case 5:
3816 if (strEQ(d,"local")) return KEY_local;
a0d0e21e 3817 if (strEQ(d,"lstat")) return -KEY_lstat;
79072805
LW		 3818 break;
3819 case 6:
a0d0e21e
LW		 3820 if (strEQ(d,"length")) return -KEY_length;
3821 if (strEQ(d,"listen")) return -KEY_listen;
79072805
LW		 3822 break;
3823 case 7:
a0d0e21e 3824 if (strEQ(d,"lcfirst")) return -KEY_lcfirst;
79072805
LW		 3825 break;
3826 case 9:
a0d0e21e 3827 if (strEQ(d,"localtime")) return -KEY_localtime;
395c3793
LW		 3828 break;
3829 }
a687059c 3830 break;
79072805
LW		 3831 case 'm':
3832 switch (len) {
3833 case 1: return KEY_m;
93a17b20
LW		 3834 case 2:
3835 if (strEQ(d,"my")) return KEY_my;
3836 break;
a0d0e21e
LW		 3837 case 3:
3838 if (strEQ(d,"map")) return KEY_map;
3839 break;
79072805 3840 case 5:
a0d0e21e 3841 if (strEQ(d,"mkdir")) return -KEY_mkdir;
79072805
LW		 3842 break;
3843 case 6:
a0d0e21e
LW		 3844 if (strEQ(d,"msgctl")) return -KEY_msgctl;
3845 if (strEQ(d,"msgget")) return -KEY_msgget;
3846 if (strEQ(d,"msgrcv")) return -KEY_msgrcv;
3847 if (strEQ(d,"msgsnd")) return -KEY_msgsnd;
79072805
LW		 3848 break;
3849 }
a687059c 3850 break;
79072805 3851 case 'N':
a0d0e21e 3852 if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;}
a687059c 3853 break;
79072805
LW		 3854 case 'n':
3855 if (strEQ(d,"next")) return KEY_next;
a0d0e21e
LW		 3856 if (strEQ(d,"ne")) return -KEY_ne;
3857 if (strEQ(d,"not")) return -KEY_not;
3858 if (strEQ(d,"no")) return KEY_no;
a687059c 3859 break;
79072805
LW		 3860 case 'o':
3861 switch (len) {
463ee0b2 3862 case 2:
a0d0e21e 3863 if (strEQ(d,"or")) return -KEY_or;
463ee0b2 3864 break;
79072805 3865 case 3:
a0d0e21e
LW		 3866 if (strEQ(d,"ord")) return -KEY_ord;
3867 if (strEQ(d,"oct")) return -KEY_oct;
79072805
LW		 3868 break;
3869 case 4:
a0d0e21e 3870 if (strEQ(d,"open")) return -KEY_open;
79072805
LW		 3871 break;
3872 case 7:
a0d0e21e 3873 if (strEQ(d,"opendir")) return -KEY_opendir;
79072805 3874 break;
fe14fcc3 3875 }
a687059c 3876 break;
79072805
LW		 3877 case 'p':
3878 switch (len) {
3879 case 3:
3880 if (strEQ(d,"pop")) return KEY_pop;
a0d0e21e 3881 if (strEQ(d,"pos")) return KEY_pos;
79072805
LW		 3882 break;
3883 case 4:
3884 if (strEQ(d,"push")) return KEY_push;
a0d0e21e
LW		 3885 if (strEQ(d,"pack")) return -KEY_pack;
3886 if (strEQ(d,"pipe")) return -KEY_pipe;
79072805
LW		 3887 break;
3888 case 5:
3889 if (strEQ(d,"print")) return KEY_print;
3890 break;
3891 case 6:
3892 if (strEQ(d,"printf")) return KEY_printf;
3893 break;
3894 case 7:
3895 if (strEQ(d,"package")) return KEY_package;
3896 break;
c07a80fd 3897 case 9:
3898 if (strEQ(d,"prototype")) return KEY_prototype;
663a0e37 3899 }
79072805
LW		 3900 break;
3901 case 'q':
3902 if (len <= 2) {
3903 if (strEQ(d,"q")) return KEY_q;
3904 if (strEQ(d,"qq")) return KEY_qq;
8990e307 3905 if (strEQ(d,"qw")) return KEY_qw;
79072805 3906 if (strEQ(d,"qx")) return KEY_qx;
663a0e37 3907 }
a0d0e21e 3908 else if (strEQ(d,"quotemeta")) return -KEY_quotemeta;
79072805
LW		 3909 break;
3910 case 'r':
3911 switch (len) {
3912 case 3:
a0d0e21e 3913 if (strEQ(d,"ref")) return -KEY_ref;
79072805
LW		 3914 break;
3915 case 4:
a0d0e21e
LW		 3916 if (strEQ(d,"read")) return -KEY_read;
3917 if (strEQ(d,"rand")) return -KEY_rand;
3918 if (strEQ(d,"recv")) return -KEY_recv;
79072805
LW		 3919 if (strEQ(d,"redo")) return KEY_redo;
3920 break;
3921 case 5:
a0d0e21e
LW		 3922 if (strEQ(d,"rmdir")) return -KEY_rmdir;
3923 if (strEQ(d,"reset")) return -KEY_reset;
79072805
LW		 3924 break;
3925 case 6:
3926 if (strEQ(d,"return")) return KEY_return;
a0d0e21e
LW		 3927 if (strEQ(d,"rename")) return -KEY_rename;
3928 if (strEQ(d,"rindex")) return -KEY_rindex;
79072805
LW		 3929 break;
3930 case 7:
a0d0e21e
LW		 3931 if (strEQ(d,"require")) return -KEY_require;
3932 if (strEQ(d,"reverse")) return -KEY_reverse;
3933 if (strEQ(d,"readdir")) return -KEY_readdir;
79072805
LW		 3934 break;
3935 case 8:
a0d0e21e
LW		 3936 if (strEQ(d,"readlink")) return -KEY_readlink;
3937 if (strEQ(d,"readline")) return -KEY_readline;
3938 if (strEQ(d,"readpipe")) return -KEY_readpipe;
79072805
LW		 3939 break;
3940 case 9:
a0d0e21e 3941 if (strEQ(d,"rewinddir")) return -KEY_rewinddir;
79072805 3942 break;
a687059c 3943 }
79072805
LW		 3944 break;
3945 case 's':
a687059c 3946 switch (d[1]) {
79072805 3947 case 0: return KEY_s;
a687059c 3948 case 'c':
79072805 3949 if (strEQ(d,"scalar")) return KEY_scalar;
a687059c
LW		 3950 break;
3951 case 'e':
79072805
LW		 3952 switch (len) {
3953 case 4:
a0d0e21e
LW		 3954 if (strEQ(d,"seek")) return -KEY_seek;
3955 if (strEQ(d,"send")) return -KEY_send;
79072805
LW		 3956 break;
3957 case 5:
a0d0e21e 3958 if (strEQ(d,"semop")) return -KEY_semop;
79072805
LW		 3959 break;
3960 case 6:
a0d0e21e
LW		 3961 if (strEQ(d,"select")) return -KEY_select;
3962 if (strEQ(d,"semctl")) return -KEY_semctl;
3963 if (strEQ(d,"semget")) return -KEY_semget;
79072805
LW		 3964 break;
3965 case 7:
a0d0e21e
LW		 3966 if (strEQ(d,"setpgrp")) return -KEY_setpgrp;
3967 if (strEQ(d,"seekdir")) return -KEY_seekdir;
79072805
LW		 3968 break;
3969 case 8:
a0d0e21e
LW		 3970 if (strEQ(d,"setpwent")) return -KEY_setpwent;
3971 if (strEQ(d,"setgrent")) return -KEY_setgrent;
79072805
LW		 3972 break;
3973 case 9:
a0d0e21e 3974 if (strEQ(d,"setnetent")) return -KEY_setnetent;
79072805
LW		 3975 break;
3976 case 10:
a0d0e21e
LW		 3977 if (strEQ(d,"setsockopt")) return -KEY_setsockopt;
3978 if (strEQ(d,"sethostent")) return -KEY_sethostent;
3979 if (strEQ(d,"setservent")) return -KEY_setservent;
79072805
LW		 3980 break;
3981 case 11:
a0d0e21e
LW		 3982 if (strEQ(d,"setpriority")) return -KEY_setpriority;
3983 if (strEQ(d,"setprotoent")) return -KEY_setprotoent;
79072805
LW		 3984 break;
3985 }
a687059c
LW		 3986 break;
3987 case 'h':
79072805
LW		 3988 switch (len) {
3989 case 5:
3990 if (strEQ(d,"shift")) return KEY_shift;
3991 break;
3992 case 6:
a0d0e21e
LW		 3993 if (strEQ(d,"shmctl")) return -KEY_shmctl;
3994 if (strEQ(d,"shmget")) return -KEY_shmget;
79072805
LW		 3995 break;
3996 case 7:
a0d0e21e 3997 if (strEQ(d,"shmread")) return -KEY_shmread;
79072805
LW		 3998 break;
3999 case 8:
a0d0e21e
LW		 4000 if (strEQ(d,"shmwrite")) return -KEY_shmwrite;
4001 if (strEQ(d,"shutdown")) return -KEY_shutdown;
79072805
LW		 4002 break;
4003 }
a687059c
LW		 4004 break;
4005 case 'i':
a0d0e21e 4006 if (strEQ(d,"sin")) return -KEY_sin;
a687059c
LW		 4007 break;
4008 case 'l':
a0d0e21e 4009 if (strEQ(d,"sleep")) return -KEY_sleep;
a687059c
LW		 4010 break;
4011 case 'o':
79072805 4012 if (strEQ(d,"sort")) return KEY_sort;
a0d0e21e
LW		 4013 if (strEQ(d,"socket")) return -KEY_socket;
4014 if (strEQ(d,"socketpair")) return -KEY_socketpair;
a687059c
LW		 4015 break;
4016 case 'p':
79072805 4017 if (strEQ(d,"split")) return KEY_split;
a0d0e21e 4018 if (strEQ(d,"sprintf")) return -KEY_sprintf;
79072805 4019 if (strEQ(d,"splice")) return KEY_splice;
a687059c
LW		 4020 break;
4021 case 'q':
a0d0e21e 4022 if (strEQ(d,"sqrt")) return -KEY_sqrt;
a687059c
LW		 4023 break;
4024 case 'r':
a0d0e21e 4025 if (strEQ(d,"srand")) return -KEY_srand;
a687059c
LW		 4026 break;
4027 case 't':
a0d0e21e 4028 if (strEQ(d,"stat")) return -KEY_stat;
79072805 4029 if (strEQ(d,"study")) return KEY_study;
a687059c
LW		 4030 break;
4031 case 'u':
a0d0e21e 4032 if (strEQ(d,"substr")) return -KEY_substr;
79072805 4033 if (strEQ(d,"sub")) return KEY_sub;
a687059c
LW		 4034 break;
4035 case 'y':
79072805
LW		 4036 switch (len) {
4037 case 6:
a0d0e21e 4038 if (strEQ(d,"system")) return -KEY_system;
79072805
LW		 4039 break;
4040 case 7:
c07a80fd 4041 if (strEQ(d,"sysopen")) return -KEY_sysopen;
a0d0e21e
LW		 4042 if (strEQ(d,"sysread")) return -KEY_sysread;
4043 if (strEQ(d,"symlink")) return -KEY_symlink;
4044 if (strEQ(d,"syscall")) return -KEY_syscall;
79072805
LW		 4045 break;
4046 case 8:
a0d0e21e 4047 if (strEQ(d,"syswrite")) return -KEY_syswrite;
79072805 4048 break;
a687059c 4049 }
a687059c
LW		 4050 break;
4051 }
4052 break;
79072805
LW		 4053 case 't':
4054 switch (len) {
4055 case 2:
4056 if (strEQ(d,"tr")) return KEY_tr;
4057 break;
463ee0b2
LW		 4058 case 3:
4059 if (strEQ(d,"tie")) return KEY_tie;
4060 break;
79072805 4061 case 4:
a0d0e21e 4062 if (strEQ(d,"tell")) return -KEY_tell;
c07a80fd 4063 if (strEQ(d,"tied")) return KEY_tied;
a0d0e21e 4064 if (strEQ(d,"time")) return -KEY_time;
79072805
LW		 4065 break;
4066 case 5:
a0d0e21e 4067 if (strEQ(d,"times")) return -KEY_times;
79072805
LW		 4068 break;
4069 case 7:
a0d0e21e 4070 if (strEQ(d,"telldir")) return -KEY_telldir;
79072805
LW		 4071 break;
4072 case 8:
a0d0e21e 4073 if (strEQ(d,"truncate")) return -KEY_truncate;
79072805 4074 break;
378cc40b 4075 }
a687059c 4076 break;
79072805
LW		 4077 case 'u':
4078 switch (len) {
4079 case 2:
a0d0e21e
LW		 4080 if (strEQ(d,"uc")) return -KEY_uc;
4081 break;
4082 case 3:
4083 if (strEQ(d,"use")) return KEY_use;
79072805
LW		 4084 break;
4085 case 5:
4086 if (strEQ(d,"undef")) return KEY_undef;
4087 if (strEQ(d,"until")) return KEY_until;
463ee0b2 4088 if (strEQ(d,"untie")) return KEY_untie;
a0d0e21e
LW		 4089 if (strEQ(d,"utime")) return -KEY_utime;
4090 if (strEQ(d,"umask")) return -KEY_umask;
79072805
LW		 4091 break;
4092 case 6:
4093 if (strEQ(d,"unless")) return KEY_unless;
a0d0e21e
LW		 4094 if (strEQ(d,"unpack")) return -KEY_unpack;
4095 if (strEQ(d,"unlink")) return -KEY_unlink;
79072805
LW		 4096 break;
4097 case 7:
4098 if (strEQ(d,"unshift")) return KEY_unshift;
a0d0e21e 4099 if (strEQ(d,"ucfirst")) return -KEY_ucfirst;
79072805 4100 break;
a687059c
LW		 4101 }
4102 break;
79072805 4103 case 'v':
a0d0e21e
LW		 4104 if (strEQ(d,"values")) return -KEY_values;
4105 if (strEQ(d,"vec")) return -KEY_vec;
a687059c 4106 break;
79072805
LW		 4107 case 'w':
4108 switch (len) {
4109 case 4:
a0d0e21e
LW		 4110 if (strEQ(d,"warn")) return -KEY_warn;
4111 if (strEQ(d,"wait")) return -KEY_wait;
79072805
LW		 4112 break;
4113 case 5:
4114 if (strEQ(d,"while")) return KEY_while;
a0d0e21e 4115 if (strEQ(d,"write")) return -KEY_write;
79072805
LW		 4116 break;
4117 case 7:
a0d0e21e 4118 if (strEQ(d,"waitpid")) return -KEY_waitpid;
79072805
LW		 4119 break;
4120 case 9:
a0d0e21e 4121 if (strEQ(d,"wantarray")) return -KEY_wantarray;
79072805 4122 break;
2f3197b3 4123 }
a687059c 4124 break;
79072805 4125 case 'x':
a0d0e21e
LW		 4126 if (len == 1) return -KEY_x;
4127 if (strEQ(d,"xor")) return -KEY_xor;
a687059c 4128 break;
79072805
LW		 4129 case 'y':
4130 if (len == 1) return KEY_y;
4131 break;
4132 case 'z':
a687059c
LW		 4133 break;
4134 }
79072805 4135 return 0;
a687059c
LW		 4136}
4137
8990e307 4138static void
2f3197b3 4139checkcomma(s,name,what)
a687059c 4140register char *s;
2f3197b3 4141char *name;
a687059c
LW		 4142char *what;
4143{
2f3197b3
LW		 4144 char *w;
4145
463ee0b2 4146 if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */
a0d0e21e
LW		 4147 int level = 1;
4148 for (w = s+2; *w && level; w++) {
4149 if (*w == '(')
4150 ++level;
4151 else if (*w == ')')
4152 --level;
4153 }
4154 if (*w)
4155 for (; *w && isSPACE(*w); w++) ;
4156 if (!*w || !strchr(";|})]oa!=", *w)) /* an advisory hack only... */
2f3197b3
LW		 4157 warn("%s (...) interpreted as function",name);
4158 }
4159 while (s < bufend && isSPACE(*s))
4160 s++;
a687059c
LW		 4161 if (*s == '(')
4162 s++;
de3bb511 4163 while (s < bufend && isSPACE(*s))
a687059c 4164 s++;
79072805 4165 if (isIDFIRST(*s)) {
2f3197b3 4166 w = s++;
de3bb511 4167 while (isALNUM(*s))
a687059c 4168 s++;
de3bb511 4169 while (s < bufend && isSPACE(*s))
a687059c 4170 s++;
e929a76b 4171 if (*s == ',') {
463ee0b2 4172 int kw;
e929a76b 4173 *s = '\0';
4633a7c4 4174 kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0;
e929a76b 4175 *s = ',';
463ee0b2 4176 if (kw)
e929a76b 4177 return;
463ee0b2
LW		 4178 croak("No comma allowed after %s", what);
4179 }
4180 }
4181}
4182
8990e307 4183static char *
463ee0b2
LW		 4184scan_word(s, dest, allow_package, slp)
4185register char *s;
4186char *dest;
4187int allow_package;
4188STRLEN *slp;
4189{
4190 register char *d = dest;
4191 for (;;) {
4192 if (isALNUM(*s))
4193 *d++ = *s++;
4194 else if (*s == '\'' && allow_package && isIDFIRST(s[1])) {
4195 *d++ = ':';
4196 *d++ = ':';
4197 s++;
4198 }
4199 else if (*s == ':' && s[1] == ':' && allow_package && isIDFIRST(s[2])) {
4200 *d++ = *s++;
4201 *d++ = *s++;
4202 }
4203 else {
4204 *d = '\0';
4205 *slp = d - dest;
4206 return s;
e929a76b 4207 }
378cc40b
LW		 4208 }
4209}
4210
8990e307 4211static char *
79072805 4212scan_ident(s,send,dest,ck_uni)
378cc40b 4213register char *s;
a687059c 4214register char *send;
378cc40b 4215char *dest;
79072805 4216I32 ck_uni;
378cc40b
LW		 4217{
4218 register char *d;
79072805 4219 char *bracket = 0;
748a9306 4220 char funny = *s++;
378cc40b 4221
79072805
LW		 4222 if (lex_brackets == 0)
4223 lex_fakebrack = 0;
a0d0e21e
LW		 4224 if (isSPACE(*s))
4225 s = skipspace(s);
378cc40b 4226 d = dest;
de3bb511
LW		 4227 if (isDIGIT(*s)) {
4228 while (isDIGIT(*s))
378cc40b
LW		 4229 *d++ = *s++;
4230 }
4231 else {
463ee0b2
LW		 4232 for (;;) {
4233 if (isALNUM(*s))
4234 *d++ = *s++;
4235 else if (*s == '\'' && isIDFIRST(s[1])) {
4236 *d++ = ':';
4237 *d++ = ':';
4238 s++;
4239 }
a0d0e21e 4240 else if (*s == ':' && s[1] == ':') {
463ee0b2
LW		 4241 *d++ = *s++;
4242 *d++ = *s++;
4243 }
4244 else
4245 break;
4246 }
378cc40b
LW		 4247 }
4248 *d = '\0';
4249 d = dest;
79072805
LW		 4250 if (*d) {
4251 if (lex_state != LEX_NORMAL)
4252 lex_state = LEX_INTERPENDMAYBE;
4253 return s;
378cc40b 4254 }
748a9306
LW		 4255 if (*s == '$' && s[1] &&
4256 (isALPHA(s[1]) || strchr("$_{", s[1]) || strnEQ(s+1,"::",2)) )
a0d0e21e 4257 return s;
79072805
LW		 4258 if (*s == '{') {
4259 bracket = s;
4260 s++;
4261 }
4262 else if (ck_uni)
4263 check_uni();
93a17b20 4264 if (s < send)
79072805
LW		 4265 *d = *s++;
4266 d[1] = '\0';
748a9306 4267 if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) {
bbce6d69 4268 *d = toCTRL(*s);
4269 s++;
de3bb511 4270 }
79072805 4271 if (bracket) {
748a9306
LW		 4272 if (isSPACE(s[-1])) {
4273 while (s < send && (*s == ' ' || *s == '\t')) s++;
4274 *d = *s;
4275 }
ff68c719 4276 if (isIDFIRST(*d)) {
79072805 4277 d++;
748a9306 4278 while (isALNUM(*s) || *s == ':')
79072805
LW		 4279 *d++ = *s++;
4280 *d = '\0';
748a9306 4281 while (s < send && (*s == ' ' || *s == '\t')) s++;
ff68c719 4282 if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) {
748a9306
LW		 4283 if (dowarn && keyword(dest, d - dest)) {
4284 char *brack = *s == '[' ? "[...]" : "{...}";
4285 warn("Ambiguous use of %c{%s%s} resolved to %c%s%s",
4286 funny, dest, brack, funny, dest, brack);
4287 }
4288 lex_fakebrack = lex_brackets+1;
79072805 4289 bracket++;
a0d0e21e 4290 lex_brackstack[lex_brackets++] = XOPERATOR;
79072805
LW		 4291 return s;
4292 }
4293 }
4294 if (*s == '}') {
4295 s++;
4296 if (lex_state == LEX_INTERPNORMAL && !lex_brackets)
4297 lex_state = LEX_INTERPEND;
748a9306
LW		 4298 if (funny == '#')
4299 funny = '@';
4300 if (dowarn &&
4301 (keyword(dest, d - dest) || perl_get_cv(dest, FALSE)))
4302 warn("Ambiguous use of %c{%s} resolved to %c%s",
4303 funny, dest, funny, dest);
79072805
LW		 4304 }
4305 else {
4306 s = bracket; /* let the parser handle it */
93a17b20 4307 *dest = '\0';
79072805
LW		 4308 }
4309 }
4310 else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s))
4311 lex_state = LEX_INTERPEND;
378cc40b
LW		 4312 return s;
4313}
4314
a0d0e21e
LW		 4315void pmflag(pmfl,ch)
4316U16* pmfl;
4317int ch;
4318{
bbce6d69 4319 if (ch == 'i')
a0d0e21e 4320 *pmfl |= PMf_FOLD;
a0d0e21e
LW		 4321 else if (ch == 'g')
4322 *pmfl |= PMf_GLOBAL;
4323 else if (ch == 'o')
4324 *pmfl |= PMf_KEEP;
4325 else if (ch == 'm')
4326 *pmfl |= PMf_MULTILINE;
4327 else if (ch == 's')
4328 *pmfl |= PMf_SINGLELINE;
4329 else if (ch == 'x')
4330 *pmfl |= PMf_EXTENDED;
4331}
378cc40b 4332
8990e307 4333static char *
79072805
LW		 4334scan_pat(start)
4335char *start;
378cc40b 4336{
79072805
LW		 4337 PMOP *pm;
4338 char *s;
378cc40b 4339
79072805
LW		 4340 s = scan_str(start);
4341 if (!s) {
4342 if (lex_stuff)
8990e307 4343 SvREFCNT_dec(lex_stuff);
79072805 4344 lex_stuff = Nullsv;
463ee0b2 4345 croak("Search pattern not terminated");
378cc40b 4346 }
bbce6d69 4347
79072805 4348 pm = (PMOP*)newPMOP(OP_MATCH, 0);
a0d0e21e 4349 if (multi_open == '?')
79072805 4350 pm->op_pmflags |= PMf_ONCE;
a0d0e21e
LW		 4351 while (*s && strchr("iogmsx", *s))
4352 pmflag(&pm->op_pmflags,*s++);
4633a7c4 4353 pm->op_pmpermflags = pm->op_pmflags;
bbce6d69 4354
79072805
LW		 4355 lex_op = (OP*)pm;
4356 yylval.ival = OP_MATCH;
378cc40b
LW		 4357 return s;
4358}
4359
8990e307 4360static char *
79072805 4361scan_subst(start)
2f3197b3 4362char *start;
79072805 4363{
a0d0e21e 4364 register char *s;
79072805
LW		 4365 register PMOP *pm;
4366 I32 es = 0;
4367
79072805
LW		 4368 yylval.ival = OP_NULL;
4369
a0d0e21e 4370 s = scan_str(start);
79072805
LW		 4371
4372 if (!s) {
4373 if (lex_stuff)
8990e307 4374 SvREFCNT_dec(lex_stuff);
79072805 4375 lex_stuff = Nullsv;
463ee0b2 4376 croak("Substitution pattern not terminated");
a687059c 4377 }
79072805 4378
a0d0e21e 4379 if (s[-1] == multi_open)
79072805
LW		 4380 s--;
4381
4382 s = scan_str(s);
4383 if (!s) {
4384 if (lex_stuff)
8990e307 4385 SvREFCNT_dec(lex_stuff);
79072805
LW		 4386 lex_stuff = Nullsv;
4387 if (lex_repl)
8990e307 4388 SvREFCNT_dec(lex_repl);
79072805 4389 lex_repl = Nullsv;
463ee0b2 4390 croak("Substitution replacement not terminated");
a687059c 4391 }
2f3197b3 4392
79072805 4393 pm = (PMOP*)newPMOP(OP_SUBST, 0);
a0d0e21e 4394 while (*s && strchr("iogmsex", *s)) {
a687059c
LW		 4395 if (*s == 'e') {
4396 s++;
2f3197b3 4397 es++;
a687059c 4398 }
a0d0e21e
LW		 4399 else
4400 pmflag(&pm->op_pmflags,*s++);
378cc40b 4401 }
79072805
LW		 4402
4403 if (es) {
4404 SV *repl;
4405 pm->op_pmflags |= PMf_EVAL;
463ee0b2
LW		 4406 repl = newSVpv("",0);
4407 while (es-- > 0)
a0d0e21e 4408 sv_catpv(repl, es ? "eval " : "do ");
79072805
LW		 4409 sv_catpvn(repl, "{ ", 2);
4410 sv_catsv(repl, lex_repl);
4411 sv_catpvn(repl, " };", 2);
4412 SvCOMPILED_on(repl);
8990e307 4413 SvREFCNT_dec(lex_repl);
79072805 4414 lex_repl = repl;
378cc40b 4415 }
79072805 4416
4633a7c4 4417 pm->op_pmpermflags = pm->op_pmflags;
79072805
LW		 4418 lex_op = (OP*)pm;
4419 yylval.ival = OP_SUBST;
378cc40b
LW		 4420 return s;
4421}
4422
1462b684 4423void
79072805
LW		 4424hoistmust(pm)
4425register PMOP *pm;
378cc40b 4426{
79072805
LW		 4427 if (!pm->op_pmshort && pm->op_pmregexp->regstart &&
4428 (!pm->op_pmregexp->regmust || pm->op_pmregexp->reganch & ROPT_ANCH)
d48672a2 4429 ) {
79072805
LW		 4430 if (!(pm->op_pmregexp->reganch & ROPT_ANCH))
4431 pm->op_pmflags |= PMf_SCANFIRST;
8990e307 4432 pm->op_pmshort = SvREFCNT_inc(pm->op_pmregexp->regstart);
748a9306 4433 pm->op_pmslen = SvCUR(pm->op_pmshort);
d48672a2 4434 }
79072805
LW		 4435 else if (pm->op_pmregexp->regmust) {/* is there a better short-circuit? */
4436 if (pm->op_pmshort &&
4437 sv_eq(pm->op_pmshort,pm->op_pmregexp->regmust))
a687059c 4438 {
79072805 4439 if (pm->op_pmflags & PMf_SCANFIRST) {
8990e307 4440 SvREFCNT_dec(pm->op_pmshort);
79072805 4441 pm->op_pmshort = Nullsv;
378cc40b
LW		 4442 }
4443 else {
8990e307 4444 SvREFCNT_dec(pm->op_pmregexp->regmust);
79072805 4445 pm->op_pmregexp->regmust = Nullsv;
378cc40b
LW		 4446 return;
4447 }
4448 }
79072805
LW		 4449 if (!pm->op_pmshort || /* promote the better string */
4450 ((pm->op_pmflags & PMf_SCANFIRST) &&
4451 (SvCUR(pm->op_pmshort) < SvCUR(pm->op_pmregexp->regmust)) )){
8990e307 4452 SvREFCNT_dec(pm->op_pmshort); /* ok if null */
79072805 4453 pm->op_pmshort = pm->op_pmregexp->regmust;
748a9306 4454 pm->op_pmslen = SvCUR(pm->op_pmshort);
79072805
LW		 4455 pm->op_pmregexp->regmust = Nullsv;
4456 pm->op_pmflags |= PMf_SCANFIRST;
378cc40b
LW		 4457 }
4458 }
4459}
4460
8990e307 4461static char *
79072805 4462scan_trans(start)
2f3197b3 4463char *start;
378cc40b 4464{
a0d0e21e 4465 register char* s;
79072805
LW		 4466 OP *op;
4467 short *tbl;
4468 I32 squash;
4469 I32 delete;
4470 I32 complement;
4471
4472 yylval.ival = OP_NULL;
4473
a0d0e21e 4474 s = scan_str(start);
79072805
LW		 4475 if (!s) {
4476 if (lex_stuff)
8990e307 4477 SvREFCNT_dec(lex_stuff);
79072805 4478 lex_stuff = Nullsv;
463ee0b2 4479 croak("Translation pattern not terminated");
a687059c 4480 }
a0d0e21e 4481 if (s[-1] == multi_open)
2f3197b3
LW		 4482 s--;
4483
93a17b20 4484 s = scan_str(s);
79072805
LW		 4485 if (!s) {
4486 if (lex_stuff)
8990e307 4487 SvREFCNT_dec(lex_stuff);
79072805
LW		 4488 lex_stuff = Nullsv;
4489 if (lex_repl)
8990e307 4490 SvREFCNT_dec(lex_repl);
79072805 4491 lex_repl = Nullsv;
463ee0b2 4492 croak("Translation replacement not terminated");
a687059c 4493 }
79072805
LW		 4494
4495 New(803,tbl,256,short);
4496 op = newPVOP(OP_TRANS, 0, (char*)tbl);
2f3197b3 4497
395c3793
LW		 4498 complement = delete = squash = 0;
4499 while (*s == 'c' || *s == 'd' || *s == 's') {
4500 if (*s == 'c')
79072805 4501 complement = OPpTRANS_COMPLEMENT;
395c3793 4502 else if (*s == 'd')
79072805 4503 delete = OPpTRANS_DELETE;
395c3793 4504 else
79072805 4505 squash = OPpTRANS_SQUASH;
395c3793
LW		 4506 s++;
4507 }
79072805
LW		 4508 op->op_private = delete|squash|complement;
4509
4510 lex_op = op;
4511 yylval.ival = OP_TRANS;
4512 return s;
4513}
4514
8990e307 4515static char *
79072805
LW		 4516scan_heredoc(s)
4517register char *s;
4518{
4519 SV *herewas;
4520 I32 op_type = OP_SCALAR;
4521 I32 len;
4522 SV *tmpstr;
4523 char term;
4524 register char *d;
4633a7c4 4525 char *peek;
79072805
LW		 4526
4527 s += 2;
4528 d = tokenbuf;
4529 if (!rsfp)
4530 *d++ = '\n';
4633a7c4
LW		 4531 for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ;
4532 if (*peek && strchr("`'\"",*peek)) {
4533 s = peek;
79072805
LW		 4534 term = *s++;
4535 s = cpytill(d,s,bufend,term,&len);
4536 if (s < bufend)
4537 s++;
4538 d += len;
4539 }
4540 else {
4541 if (*s == '\\')
4542 s++, term = '\'';
4543 else
4544 term = '"';
4633a7c4
LW		 4545 if (!isALNUM(*s))
4546 deprecate("bare << to mean <<\"\"");
79072805
LW		 4547 while (isALNUM(*s))
4548 *d++ = *s++;
4549 } /* assuming tokenbuf won't clobber */
4550 *d++ = '\n';
4551 *d = '\0';
4552 len = d - tokenbuf;
4553 d = "\n";
4554 if (rsfp || !(d=ninstr(s,bufend,d,d+1)))
4555 herewas = newSVpv(s,bufend-s);
4556 else
4557 s--, herewas = newSVpv(s,d-s);
4558 s += SvCUR(herewas);
748a9306
LW		 4559
4560 tmpstr = NEWSV(87,80);
4561 sv_upgrade(tmpstr, SVt_PVIV);
4562 if (term == '\'') {
79072805 4563 op_type = OP_CONST;
748a9306
LW		 4564 SvIVX(tmpstr) = -1;
4565 }
4566 else if (term == '`') {
79072805 4567 op_type = OP_BACKTICK;
748a9306
LW		 4568 SvIVX(tmpstr) = '\\';
4569 }
79072805
LW		 4570
4571 CLINE;
4572 multi_start = curcop->cop_line;
4573 multi_open = multi_close = '<';
79072805
LW		 4574 term = *tokenbuf;
4575 if (!rsfp) {
4576 d = s;
4577 while (s < bufend &&
36477c24 4578 (*s != term || memNE(s,tokenbuf,len)) ) {
79072805
LW		 4579 if (*s++ == '\n')
4580 curcop->cop_line++;
4581 }
4582 if (s >= bufend) {
4583 curcop->cop_line = multi_start;
8990e307 4584 missingterm(tokenbuf);
79072805
LW		 4585 }
4586 sv_setpvn(tmpstr,d+1,s-d);
4587 s += len - 1;
4588 sv_catpvn(herewas,s,bufend-s);
4589 sv_setsv(linestr,herewas);
fd049845 4590 oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr);
463ee0b2 4591 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 4592 }
4593 else
4594 sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */
4595 while (s >= bufend) { /* multiple line string? */
4596 if (!rsfp ||
fd049845 4597 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
79072805 4598 curcop->cop_line = multi_start;
8990e307 4599 missingterm(tokenbuf);
79072805
LW		 4600 }
4601 curcop->cop_line++;
8990e307 4602 if (perldb && curstash != debstash) {
79072805
LW		 4603 SV *sv = NEWSV(88,0);
4604
93a17b20 4605 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 4606 sv_setsv(sv,linestr);
4607 av_store(GvAV(curcop->cop_filegv),
4608 (I32)curcop->cop_line,sv);
4609 }
463ee0b2 4610 bufend = SvPVX(linestr) + SvCUR(linestr);
36477c24 4611 if (*s == term && memEQ(s,tokenbuf,len)) {
79072805
LW		 4612 s = bufend - 1;
4613 *s = ' ';
4614 sv_catsv(linestr,herewas);
463ee0b2 4615 bufend = SvPVX(linestr) + SvCUR(linestr);
79072805
LW		 4616 }
4617 else {
4618 s = bufend;
4619 sv_catsv(tmpstr,linestr);
395c3793
LW		 4620 }
4621 }
79072805
LW		 4622 multi_end = curcop->cop_line;
4623 s++;
4624 if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) {
4625 SvLEN_set(tmpstr, SvCUR(tmpstr) + 1);
463ee0b2 4626 Renew(SvPVX(tmpstr), SvLEN(tmpstr), char);
79072805 4627 }
8990e307 4628 SvREFCNT_dec(herewas);
79072805
LW		 4629 lex_stuff = tmpstr;
4630 yylval.ival = op_type;
4631 return s;
4632}
4633
8990e307 4634static char *
79072805
LW		 4635scan_inputsymbol(start)
4636char *start;
4637{
4638 register char *s = start;
4639 register char *d;
4640 I32 len;
4641
4642 d = tokenbuf;
4643 s = cpytill(d, s+1, bufend, '>', &len);
4644 if (s < bufend)
4645 s++;
4646 else
463ee0b2 4647 croak("Unterminated <> operator");
79072805 4648
4633a7c4 4649 if (*d == '$' && d[1]) d++;
a0d0e21e 4650 while (*d && (isALNUM(*d) || *d == '\'' || *d == ':'))
79072805
LW		 4651 d++;
4652 if (d - tokenbuf != len) {
4653 yylval.ival = OP_GLOB;
4654 set_csh();
4655 s = scan_str(start);
4656 if (!s)
463ee0b2 4657 croak("Glob not terminated");
79072805
LW		 4658 return s;
4659 }
395c3793 4660 else {
79072805
LW		 4661 d = tokenbuf;
4662 if (!len)
4663 (void)strcpy(d,"ARGV");
4664 if (*d == '$') {
a0d0e21e
LW		 4665 I32 tmp;
4666 if (tmp = pad_findmy(d)) {
4667 OP *op = newOP(OP_PADSV, 0);
4668 op->op_targ = tmp;
4669 lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, op));
4670 }
4671 else {
4672 GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV);
4673 lex_op = (OP*)newUNOP(OP_READLINE, 0,
4674 newUNOP(OP_RV2GV, 0,
4675 newUNOP(OP_RV2SV, 0,
4676 newGVOP(OP_GV, 0, gv))));
4677 }
79072805
LW		 4678 yylval.ival = OP_NULL;
4679 }
4680 else {
85e6fe83 4681 GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO);
79072805
LW		 4682 lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv));
4683 yylval.ival = OP_NULL;
4684 }
4685 }
4686 return s;
4687}
4688
8990e307 4689static char *
79072805
LW		 4690scan_str(start)
4691char *start;
4692{
93a17b20 4693 SV *sv;
79072805
LW		 4694 char *tmps;
4695 register char *s = start;
a0d0e21e 4696 register char term;
93a17b20
LW		 4697 register char *to;
4698 I32 brackets = 1;
79072805 4699
a0d0e21e
LW		 4700 if (isSPACE(*s))
4701 s = skipspace(s);
79072805 4702 CLINE;
a0d0e21e 4703 term = *s;
79072805
LW		 4704 multi_start = curcop->cop_line;
4705 multi_open = term;
93a17b20 4706 if (term && (tmps = strchr("([{< )]}> )]}>",term)))
79072805
LW		 4707 term = tmps[5];
4708 multi_close = term;
4709
93a17b20 4710 sv = NEWSV(87,80);
ed6116ce
LW		 4711 sv_upgrade(sv, SVt_PVIV);
4712 SvIVX(sv) = term;
a0d0e21e 4713 (void)SvPOK_only(sv); /* validate pointer */
93a17b20
LW		 4714 s++;
4715 for (;;) {
4716 SvGROW(sv, SvCUR(sv) + (bufend - s) + 1);
463ee0b2 4717 to = SvPVX(sv)+SvCUR(sv);
93a17b20
LW		 4718 if (multi_open == multi_close) {
4719 for (; s < bufend; s++,to++) {
463ee0b2
LW		 4720 if (*s == '\n' && !rsfp)
4721 curcop->cop_line++;
a0d0e21e
LW		 4722 if (*s == '\\' && s+1 < bufend && term != '\\') {
4723 if (s[1] == term)
4724 s++;
4725 else
4726 *to++ = *s++;
4727 }
93a17b20
LW		 4728 else if (*s == term)
4729 break;
4730 *to = *s;
4731 }
4732 }
4733 else {
4734 for (; s < bufend; s++,to++) {
463ee0b2
LW		 4735 if (*s == '\n' && !rsfp)
4736 curcop->cop_line++;
a0d0e21e
LW		 4737 if (*s == '\\' && s+1 < bufend && term != '\\') {
4738 if (s[1] == term)
4739 s++;
4740 else
4741 *to++ = *s++;
4742 }
93a17b20
LW		 4743 else if (*s == term && --brackets <= 0)
4744 break;
4745 else if (*s == multi_open)
4746 brackets++;
4747 *to = *s;
4748 }
4749 }
4750 *to = '\0';
463ee0b2 4751 SvCUR_set(sv, to - SvPVX(sv));
93a17b20
LW		 4752
4753 if (s < bufend) break; /* string ends on this line? */
79072805 4754
79072805 4755 if (!rsfp ||
fd049845 4756 !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) {
c07a80fd 4757 sv_free(sv);
79072805
LW		 4758 curcop->cop_line = multi_start;
4759 return Nullch;
4760 }
4761 curcop->cop_line++;
8990e307 4762 if (perldb && curstash != debstash) {
79072805
LW		 4763 SV *sv = NEWSV(88,0);
4764
93a17b20 4765 sv_upgrade(sv, SVt_PVMG);
79072805
LW		 4766 sv_setsv(sv,linestr);
4767 av_store(GvAV(curcop->cop_filegv),
4768 (I32)curcop->cop_line, sv);
395c3793 4769 }
463ee0b2 4770 bufend = SvPVX(linestr) + SvCUR(linestr);
378cc40b 4771 }
79072805
LW		 4772 multi_end = curcop->cop_line;
4773 s++;
93a17b20
LW		 4774 if (SvCUR(sv) + 5 < SvLEN(sv)) {
4775 SvLEN_set(sv, SvCUR(sv) + 1);
463ee0b2 4776 Renew(SvPVX(sv), SvLEN(sv), char);
79072805
LW		 4777 }
4778 if (lex_stuff)
93a17b20 4779 lex_repl = sv;
79072805 4780 else
93a17b20 4781 lex_stuff = sv;
378cc40b
LW		 4782 return s;
4783}
4784
4785char *
79072805 4786scan_num(start)
2f3197b3 4787char *start;
378cc40b 4788{
2f3197b3 4789 register char *s = start;
378cc40b 4790 register char *d;
79072805
LW		 4791 I32 tryi32;
4792 double value;
4793 SV *sv;
4794 I32 floatit;
93a17b20 4795 char *lastub = 0;
378cc40b
LW		 4796
4797 switch (*s) {
79072805 4798 default:
463ee0b2 4799 croak("panic: scan_num");
378cc40b
LW		 4800 case '0':
4801 {
55497cff 4802 UV u;
79072805 4803 I32 shift;
55497cff 4804 bool overflowed = FALSE;
378cc40b 4805
378cc40b
LW		 4806 if (s[1] == 'x') {
4807 shift = 4;
4808 s += 2;
4809 }
4810 else if (s[1] == '.')
4811 goto decimal;
4812 else
4813 shift = 3;
55497cff 4814 u = 0;
378cc40b 4815 for (;;) {
55497cff 4816 UV n, b;
4817
378cc40b
LW		 4818 switch (*s) {
4819 default:
4820 goto out;
de3bb511
LW		 4821 case '_':
4822 s++;
4823 break;
378cc40b
LW		 4824 case '8': case '9':
4825 if (shift != 4)
a687059c 4826 yyerror("Illegal octal digit");
378cc40b
LW		 4827 /* FALL THROUGH */
4828 case '0': case '1': case '2': case '3': case '4':
4829 case '5': case '6': case '7':
55497cff 4830 b = *s++ & 15;
4831 goto digit;
378cc40b
LW		 4832 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
4833 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
4834 if (shift != 4)
4835 goto out;
55497cff 4836 b = (*s++ & 7) + 9;
4837 digit:
4838 n = u << shift;
4839 if (!overflowed && (n >> shift) != u) {
4840 warn("Integer overflow in %s number",
4841 (shift == 4) ? "hex" : "octal");
4842 overflowed = TRUE;
4843 }
4844 u = n | b;
378cc40b
LW		 4845 break;
4846 }
4847 }
4848 out:
79072805 4849 sv = NEWSV(92,0);
55497cff 4850 sv_setuv(sv, u);
378cc40b
LW		 4851 }
4852 break;
4853 case '1': case '2': case '3': case '4': case '5':
4854 case '6': case '7': case '8': case '9': case '.':
4855 decimal:
378cc40b 4856 d = tokenbuf;
79072805 4857 floatit = FALSE;
de3bb511 4858 while (isDIGIT(*s) || *s == '_') {
93a17b20
LW		 4859 if (*s == '_') {
4860 if (dowarn && lastub && s - lastub != 3)
8990e307 4861 warn("Misplaced _ in number");
93a17b20
LW		 4862 lastub = ++s;
4863 }
378cc40b
LW		 4864 else
4865 *d++ = *s++;
4866 }
93a17b20 4867 if (dowarn && lastub && s - lastub != 3)
8990e307 4868 warn("Misplaced _ in number");
2f3197b3 4869 if (*s == '.' && s[1] != '.') {
79072805 4870 floatit = TRUE;
378cc40b 4871 *d++ = *s++;
de3bb511 4872 while (isDIGIT(*s) || *s == '_') {
378cc40b
LW		 4873 if (*s == '_')
4874 s++;
4875 else
4876 *d++ = *s++;
4877 }
4878 }
93a17b20 4879 if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) {
79072805
LW		 4880 floatit = TRUE;
4881 s++;
4882 *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */
378cc40b
LW		 4883 if (*s == '+' || *s == '-')
4884 *d++ = *s++;
de3bb511 4885 while (isDIGIT(*s))
378cc40b
LW		 4886 *d++ = *s++;
4887 }
4888 *d = '\0';
79072805 4889 sv = NEWSV(92,0);
36477c24 4890 SET_NUMERIC_STANDARD();
79072805 4891 value = atof(tokenbuf);
ed6116ce 4892 tryi32 = I_32(value);
79072805
LW		 4893 if (!floatit && (double)tryi32 == value)
4894 sv_setiv(sv,tryi32);
2f3197b3 4895 else
79072805 4896 sv_setnv(sv,value);
378cc40b 4897 break;
79072805 4898 }
a687059c 4899
79072805 4900 yylval.opval = newSVOP(OP_CONST, 0, sv);
a687059c 4901
378cc40b
LW		 4902 return s;
4903}
4904
8990e307 4905static char *
79072805
LW		 4906scan_formline(s)
4907register char *s;
378cc40b 4908{
79072805 4909 register char *eol;
378cc40b 4910 register char *t;
a0d0e21e 4911 SV *stuff = newSVpv("",0);
79072805 4912 bool needargs = FALSE;
378cc40b 4913
79072805 4914 while (!needargs) {
85e6fe83 4915 if (*s == '.' || *s == '}') {
79072805
LW		 4916 /*SUPPRESS 530*/
4917 for (t = s+1; *t == ' ' || *t == '\t'; t++) ;
4918 if (*t == '\n')
4919 break;
4920 }
0f85fab0 4921 if (in_eval && !rsfp) {
93a17b20 4922 eol = strchr(s,'\n');
0f85fab0
LW		 4923 if (!eol++)
4924 eol = bufend;
4925 }
4926 else
463ee0b2 4927 eol = bufend = SvPVX(linestr) + SvCUR(linestr);
79072805 4928 if (*s != '#') {
a0d0e21e
LW		 4929 for (t = s; t < eol; t++) {
4930 if (*t == '~' && t[1] == '~' && SvCUR(stuff)) {
4931 needargs = FALSE;
4932 goto enough; /* ~~ must be first line in formline */
378cc40b 4933 }
a0d0e21e
LW		 4934 if (*t == '@' || *t == '^')
4935 needargs = TRUE;
378cc40b 4936 }
a0d0e21e 4937 sv_catpvn(stuff, s, eol-s);
79072805
LW		 4938 }
4939 s = eol;
4940 if (rsfp) {
fd049845 4941 s = filter_gets(linestr, rsfp, 0);
4942 oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr);
a0d0e21e 4943 bufend = bufptr + SvCUR(linestr);
79072805
LW		 4944 if (!s) {
4945 s = bufptr;
4946 yyerror("Format not terminated");
378cc40b
LW		 4947 break;
4948 }
378cc40b 4949 }
463ee0b2 4950 incline(s);
79072805 4951 }
a0d0e21e
LW		 4952 enough:
4953 if (SvCUR(stuff)) {
463ee0b2 4954 expect = XTERM;
79072805 4955 if (needargs) {
a0d0e21e 4956 lex_state = LEX_NORMAL;
79072805
LW		 4957 nextval[nexttoke].ival = 0;
4958 force_next(',');
4959 }
a0d0e21e
LW		 4960 else
4961 lex_state = LEX_FORMLINE;
79072805
LW		 4962 nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff);
4963 force_next(THING);
4964 nextval[nexttoke].ival = OP_FORMLINE;
4965 force_next(LSTOP);
378cc40b 4966 }
79072805 4967 else {
8990e307 4968 SvREFCNT_dec(stuff);
85e6fe83 4969 lex_formbrack = 0;
79072805
LW		 4970 bufptr = s;
4971 }
4972 return s;
378cc40b 4973}
a687059c 4974
2f3197b3 4975static void
a687059c
LW		 4976set_csh()
4977{
ae986130
LW		 4978#ifdef CSH
4979 if (!cshlen)
4980 cshlen = strlen(cshname);
4981#endif
a687059c 4982}
463ee0b2
LW		 4983
4984int
8990e307
LW		 4985start_subparse()
4986{
4987 int oldsavestack_ix = savestack_ix;
748a9306
LW		 4988 CV* outsidecv = compcv;
4989 AV* comppadlist;
8990e307 4990
e9a444f0
LW		 4991 if (compcv) {
4992 assert(SvTYPE(compcv) == SVt_PVCV);
4993 }
8990e307
LW		 4994 save_I32(&subline);
4995 save_item(subname);
55497cff 4996 SAVEI32(padix);
8990e307
LW		 4997 SAVESPTR(curpad);
4998 SAVESPTR(comppad);
4999 SAVESPTR(comppad_name);
748a9306 5000 SAVESPTR(compcv);
55497cff 5001 SAVEI32(comppad_name_fill);
5002 SAVEI32(min_intro_pending);
5003 SAVEI32(max_intro_pending);
5004 SAVEI32(pad_reset_pending);
748a9306
LW		 5005
5006 compcv = (CV*)NEWSV(1104,0);
5007 sv_upgrade((SV *)compcv, SVt_PVCV);
5008
8990e307
LW		 5009 comppad = newAV();
5010 comppad_name = newAV();
5011 comppad_name_fill = 0;
5012 min_intro_pending = 0;
5013 av_push(comppad, Nullsv);
5014 curpad = AvARRAY(comppad);
5015 padix = 0;
8990e307 5016 subline = curcop->cop_line;
748a9306
LW		 5017
5018 comppadlist = newAV();
5019 AvREAL_off(comppadlist);
8e07c86e
AD		 5020 av_store(comppadlist, 0, (SV*)comppad_name);
5021 av_store(comppadlist, 1, (SV*)comppad);
748a9306
LW		 5022
5023 CvPADLIST(compcv) = comppadlist;
e9a444f0 5024 CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc((SV*)outsidecv);
748a9306 5025
8990e307
LW		 5026 return oldsavestack_ix;
5027}
5028
5029int
5030yywarn(s)
5031char *s;
5032{
5033 --error_count;
748a9306
LW		 5034 in_eval |= 2;
5035 yyerror(s);
5036 in_eval &= ~2;
5037 return 0;
8990e307
LW		 5038}
5039
5040int
463ee0b2
LW		 5041yyerror(s)
5042char *s;
5043{
5044 char tmpbuf[258];
463ee0b2
LW		 5045 char *tname = tmpbuf;
5046
5047 if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 &&
5048 oldoldbufptr != oldbufptr && oldbufptr != bufptr) {
5049 while (isSPACE(*oldoldbufptr))
5050 oldoldbufptr++;
a0d0e21e 5051 sprintf(tname,"near \"%.*s\"",bufptr - oldoldbufptr, oldoldbufptr);
463ee0b2
LW		 5052 }
5053 else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 &&
5054 oldbufptr != bufptr) {
5055 while (isSPACE(*oldbufptr))
5056 oldbufptr++;
a0d0e21e 5057 sprintf(tname,"near \"%.*s\"",bufptr - oldbufptr, oldbufptr);
463ee0b2
LW		 5058 }
5059 else if (yychar > 255)
5060 tname = "next token ???";
5061 else if (!yychar || (yychar == ';' && !rsfp))
5062 (void)strcpy(tname,"at EOF");
5063 else if ((yychar & 127) == 127) {
5064 if (lex_state == LEX_NORMAL ||
5065 (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL))
5066 (void)strcpy(tname,"at end of line");
4633a7c4
LW		 5067 else if (lex_inpat)
5068 (void)strcpy(tname,"within pattern");
463ee0b2 5069 else
a0d0e21e 5070 (void)strcpy(tname,"within string");
463ee0b2
LW		 5071 }
5072 else if (yychar < 32)
bbce6d69 5073 (void)sprintf(tname,"next char ^%c",toCTRL(yychar));
463ee0b2
LW		 5074 else
5075 (void)sprintf(tname,"next char %c",yychar);
5076 (void)sprintf(buf, "%s at %s line %d, %s\n",
5077 s,SvPVX(GvSV(curcop->cop_filegv)),curcop->cop_line,tname);
a0d0e21e 5078 if (curcop->cop_line == multi_end && multi_start < multi_end) {
463ee0b2 5079 sprintf(buf+strlen(buf),
a0d0e21e
LW		 5080 " (Might be a runaway multi-line %c%c string starting on line %ld)\n",
5081 multi_open,multi_close,(long)multi_start);
5082 multi_end = 0;
5083 }
748a9306
LW		 5084 if (in_eval & 2)
5085 warn("%s",buf);
5086 else if (in_eval)
4633a7c4 5087 sv_catpv(GvSV(errgv),buf);
463ee0b2 5088 else
760ac839 5089 PerlIO_printf(PerlIO_stderr(), "%s",buf);
463ee0b2
LW		 5090 if (++error_count >= 10)
5091 croak("%s has too many errors.\n",
5092 SvPVX(GvSV(curcop->cop_filegv)));
4633a7c4 5093 in_my = 0;
463ee0b2
LW		 5094 return 0;
5095}
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