Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
14 | #include "EXTERN.h" | |
15 | #include "perl.h" | |
378cc40b | 16 | |
76e3520e | 17 | #ifndef PERL_OBJECT |
a0d0e21e LW |
18 | static void check_uni _((void)); |
19 | static void force_next _((I32 type)); | |
89bfa8cd | 20 | static char *force_version _((char *start)); |
a0d0e21e | 21 | static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick)); |
76e3520e | 22 | static SV *tokeq _((SV *sv)); |
a0d0e21e LW |
23 | static char *scan_const _((char *start)); |
24 | static char *scan_formline _((char *s)); | |
25 | static char *scan_heredoc _((char *s)); | |
8903cb82 | 26 | static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen, |
27 | I32 ck_uni)); | |
a0d0e21e LW |
28 | static char *scan_inputsymbol _((char *start)); |
29 | static char *scan_pat _((char *start)); | |
30 | static char *scan_str _((char *start)); | |
31 | static char *scan_subst _((char *start)); | |
32 | static char *scan_trans _((char *start)); | |
8903cb82 | 33 | static char *scan_word _((char *s, char *dest, STRLEN destlen, |
34 | int allow_package, STRLEN *slp)); | |
a0d0e21e LW |
35 | static char *skipspace _((char *s)); |
36 | static void checkcomma _((char *s, char *name, char *what)); | |
37 | static void force_ident _((char *s, int kind)); | |
38 | static void incline _((char *s)); | |
39 | static int intuit_method _((char *s, GV *gv)); | |
40 | static int intuit_more _((char *s)); | |
41 | static I32 lop _((I32 f, expectation x, char *s)); | |
42 | static void missingterm _((char *s)); | |
43 | static void no_op _((char *what, char *s)); | |
44 | static void set_csh _((void)); | |
45 | static I32 sublex_done _((void)); | |
55497cff | 46 | static I32 sublex_push _((void)); |
a0d0e21e LW |
47 | static I32 sublex_start _((void)); |
48 | #ifdef CRIPPLED_CC | |
49 | static int uni _((I32 f, char *s)); | |
50 | #endif | |
fd049845 | 51 | static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append)); |
6d5fb7e3 | 52 | static void restore_rsfp _((void *f)); |
b3ac6de7 | 53 | static SV *new_constant _((char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type)); |
49d8d3a1 MB |
54 | static void restore_expect _((void *e)); |
55 | static void restore_lex_expect _((void *e)); | |
76e3520e | 56 | #endif /* PERL_OBJECT */ |
2f3197b3 | 57 | |
fc36a67e | 58 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 59 | |
79072805 LW |
60 | /* The following are arranged oddly so that the guard on the switch statement |
61 | * can get by with a single comparison (if the compiler is smart enough). | |
62 | */ | |
63 | ||
fb73857a | 64 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
65 | ||
55497cff | 66 | #define LEX_NORMAL 10 |
67 | #define LEX_INTERPNORMAL 9 | |
68 | #define LEX_INTERPCASEMOD 8 | |
69 | #define LEX_INTERPPUSH 7 | |
70 | #define LEX_INTERPSTART 6 | |
71 | #define LEX_INTERPEND 5 | |
72 | #define LEX_INTERPENDMAYBE 4 | |
73 | #define LEX_INTERPCONCAT 3 | |
74 | #define LEX_INTERPCONST 2 | |
75 | #define LEX_FORMLINE 1 | |
76 | #define LEX_KNOWNEXT 0 | |
79072805 | 77 | |
395c3793 LW |
78 | #ifdef I_FCNTL |
79 | #include <fcntl.h> | |
80 | #endif | |
fe14fcc3 LW |
81 | #ifdef I_SYS_FILE |
82 | #include <sys/file.h> | |
83 | #endif | |
395c3793 | 84 | |
a790bc05 | 85 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
86 | #ifdef I_UNISTD | |
87 | # include <unistd.h> /* Needed for execv() */ | |
88 | #endif | |
89 | ||
90 | ||
79072805 LW |
91 | #ifdef ff_next |
92 | #undef ff_next | |
d48672a2 LW |
93 | #endif |
94 | ||
79072805 | 95 | #include "keywords.h" |
fe14fcc3 | 96 | |
ae986130 LW |
97 | #ifdef CLINE |
98 | #undef CLINE | |
99 | #endif | |
79072805 | 100 | #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline)) |
378cc40b | 101 | |
79072805 LW |
102 | #define TOKEN(retval) return (bufptr = s,(int)retval) |
103 | #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval) | |
a0d0e21e | 104 | #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval)) |
79072805 | 105 | #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval) |
a0d0e21e | 106 | #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval) |
79072805 LW |
107 | #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval) |
108 | #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval) | |
463ee0b2 | 109 | #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX) |
79072805 LW |
110 | #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP) |
111 | #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0) | |
112 | #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1) | |
a0d0e21e LW |
113 | #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP)) |
114 | #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP)) | |
115 | #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP)) | |
116 | #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP)) | |
79072805 | 117 | #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP) |
a0d0e21e LW |
118 | #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP)) |
119 | #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP)) | |
79072805 LW |
120 | #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP) |
121 | #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP) | |
2f3197b3 | 122 | |
a687059c LW |
123 | /* This bit of chicanery makes a unary function followed by |
124 | * a parenthesis into a function with one argument, highest precedence. | |
125 | */ | |
2f3197b3 | 126 | #define UNI(f) return(yylval.ival = f, \ |
79072805 | 127 | expect = XTERM, \ |
2f3197b3 LW |
128 | bufptr = s, \ |
129 | last_uni = oldbufptr, \ | |
a0d0e21e | 130 | last_lop_op = f, \ |
a687059c LW |
131 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
132 | ||
79072805 LW |
133 | #define UNIBRACK(f) return(yylval.ival = f, \ |
134 | bufptr = s, \ | |
135 | last_uni = oldbufptr, \ | |
136 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) | |
137 | ||
9f68db38 | 138 | /* grandfather return to old style */ |
79072805 LW |
139 | #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP) |
140 | ||
76e3520e | 141 | STATIC int |
8ac85365 | 142 | ao(int toketype) |
a0d0e21e LW |
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 | ||
76e3520e | 155 | STATIC void |
8ac85365 | 156 | no_op(char *what, char *s) |
463ee0b2 | 157 | { |
748a9306 | 158 | char *oldbp = bufptr; |
fd049845 | 159 | bool is_first = (oldbufptr == linestart); |
68dc0745 | 160 | |
8990e307 | 161 | bufptr = s; |
46fc3d4c | 162 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 163 | if (is_first) |
a0d0e21e | 164 | warn("\t(Missing semicolon on previous line?)\n"); |
748a9306 LW |
165 | else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) { |
166 | char *t; | |
167 | for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ; | |
168 | if (t < bufptr && isSPACE(*t)) | |
169 | warn("\t(Do you need to predeclare %.*s?)\n", | |
170 | t - oldoldbufptr, oldoldbufptr); | |
171 | ||
172 | } | |
173 | else | |
174 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
175 | bufptr = oldbp; | |
8990e307 LW |
176 | } |
177 | ||
76e3520e | 178 | STATIC void |
8ac85365 | 179 | missingterm(char *s) |
8990e307 LW |
180 | { |
181 | char tmpbuf[3]; | |
182 | char q; | |
183 | if (s) { | |
184 | char *nl = strrchr(s,'\n'); | |
d2719217 | 185 | if (nl) |
8990e307 LW |
186 | *nl = '\0'; |
187 | } | |
188 | else if (multi_close < 32 || multi_close == 127) { | |
189 | *tmpbuf = '^'; | |
bbce6d69 | 190 | tmpbuf[1] = toCTRL(multi_close); |
8990e307 LW |
191 | s = "\\n"; |
192 | tmpbuf[2] = '\0'; | |
193 | s = tmpbuf; | |
194 | } | |
195 | else { | |
196 | *tmpbuf = multi_close; | |
197 | tmpbuf[1] = '\0'; | |
198 | s = tmpbuf; | |
199 | } | |
200 | q = strchr(s,'"') ? '\'' : '"'; | |
201 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 202 | } |
79072805 LW |
203 | |
204 | void | |
8ac85365 | 205 | deprecate(char *s) |
a0d0e21e LW |
206 | { |
207 | if (dowarn) | |
208 | warn("Use of %s is deprecated", s); | |
209 | } | |
210 | ||
76e3520e | 211 | STATIC void |
8ac85365 | 212 | depcom(void) |
a0d0e21e LW |
213 | { |
214 | deprecate("comma-less variable list"); | |
215 | } | |
216 | ||
a868473f NIS |
217 | #ifdef WIN32 |
218 | ||
76e3520e | 219 | STATIC I32 |
a868473f NIS |
220 | win32_textfilter(int idx, SV *sv, int maxlen) |
221 | { | |
222 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
223 | if (count > 0 && !maxlen) | |
224 | win32_strip_return(sv); | |
225 | return count; | |
226 | } | |
227 | #endif | |
228 | ||
229 | ||
a0d0e21e | 230 | void |
8ac85365 | 231 | lex_start(SV *line) |
79072805 | 232 | { |
0f15f207 | 233 | dTHR; |
8990e307 LW |
234 | char *s; |
235 | STRLEN len; | |
236 | ||
55497cff | 237 | SAVEI32(lex_dojoin); |
238 | SAVEI32(lex_brackets); | |
239 | SAVEI32(lex_fakebrack); | |
240 | SAVEI32(lex_casemods); | |
241 | SAVEI32(lex_starts); | |
242 | SAVEI32(lex_state); | |
a0d0e21e | 243 | SAVESPTR(lex_inpat); |
55497cff | 244 | SAVEI32(lex_inwhat); |
245 | SAVEI16(curcop->cop_line); | |
85e6fe83 LW |
246 | SAVEPPTR(bufptr); |
247 | SAVEPPTR(bufend); | |
248 | SAVEPPTR(oldbufptr); | |
249 | SAVEPPTR(oldoldbufptr); | |
fd049845 | 250 | SAVEPPTR(linestart); |
463ee0b2 | 251 | SAVESPTR(linestr); |
85e6fe83 | 252 | SAVEPPTR(lex_brackstack); |
a0d0e21e | 253 | SAVEPPTR(lex_casestack); |
565764a8 | 254 | SAVEDESTRUCTOR(restore_rsfp, rsfp); |
49d8d3a1 MB |
255 | SAVESPTR(lex_stuff); |
256 | SAVEI32(lex_defer); | |
257 | SAVESPTR(lex_repl); | |
258 | SAVEDESTRUCTOR(restore_expect, tokenbuf + expect); /* encode as pointer */ | |
259 | SAVEDESTRUCTOR(restore_lex_expect, tokenbuf + expect); | |
463ee0b2 | 260 | |
79072805 LW |
261 | lex_state = LEX_NORMAL; |
262 | lex_defer = 0; | |
8990e307 | 263 | expect = XSTATE; |
79072805 LW |
264 | lex_brackets = 0; |
265 | lex_fakebrack = 0; | |
8990e307 | 266 | New(899, lex_brackstack, 120, char); |
a0d0e21e | 267 | New(899, lex_casestack, 12, char); |
8990e307 | 268 | SAVEFREEPV(lex_brackstack); |
a0d0e21e | 269 | SAVEFREEPV(lex_casestack); |
79072805 | 270 | lex_casemods = 0; |
a0d0e21e | 271 | *lex_casestack = '\0'; |
79072805 LW |
272 | lex_dojoin = 0; |
273 | lex_starts = 0; | |
79072805 | 274 | lex_stuff = Nullsv; |
79072805 LW |
275 | lex_repl = Nullsv; |
276 | lex_inpat = 0; | |
277 | lex_inwhat = 0; | |
8990e307 LW |
278 | linestr = line; |
279 | if (SvREADONLY(linestr)) | |
280 | linestr = sv_2mortal(newSVsv(linestr)); | |
281 | s = SvPV(linestr, len); | |
282 | if (len && s[len-1] != ';') { | |
a0d0e21e | 283 | if (!(SvFLAGS(linestr) & SVs_TEMP)) |
8990e307 LW |
284 | linestr = sv_2mortal(newSVsv(linestr)); |
285 | sv_catpvn(linestr, "\n;", 2); | |
286 | } | |
287 | SvTEMP_off(linestr); | |
fd049845 | 288 | oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr); |
79072805 | 289 | bufend = bufptr + SvCUR(linestr); |
c07a80fd | 290 | SvREFCNT_dec(rs); |
291 | rs = newSVpv("\n", 1); | |
8990e307 | 292 | rsfp = 0; |
79072805 | 293 | } |
a687059c | 294 | |
463ee0b2 | 295 | void |
8ac85365 | 296 | lex_end(void) |
463ee0b2 | 297 | { |
6ca21dd3 | 298 | doextract = FALSE; |
463ee0b2 LW |
299 | } |
300 | ||
76e3520e | 301 | STATIC void |
8ac85365 | 302 | restore_rsfp(void *f) |
6d5fb7e3 | 303 | { |
760ac839 | 304 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 305 | |
760ac839 LW |
306 | if (rsfp == PerlIO_stdin()) |
307 | PerlIO_clearerr(rsfp); | |
a5f75d66 | 308 | else if (rsfp && (rsfp != fp)) |
760ac839 | 309 | PerlIO_close(rsfp); |
6d5fb7e3 CS |
310 | rsfp = fp; |
311 | } | |
312 | ||
76e3520e | 313 | STATIC void |
7fae4e64 | 314 | restore_expect(void *e) |
49d8d3a1 MB |
315 | { |
316 | /* a safe way to store a small integer in a pointer */ | |
317 | expect = (expectation)((char *)e - tokenbuf); | |
318 | } | |
319 | ||
837485b6 | 320 | STATIC void |
7fae4e64 | 321 | restore_lex_expect(void *e) |
49d8d3a1 MB |
322 | { |
323 | /* a safe way to store a small integer in a pointer */ | |
324 | lex_expect = (expectation)((char *)e - tokenbuf); | |
325 | } | |
326 | ||
837485b6 | 327 | STATIC void |
8ac85365 | 328 | incline(char *s) |
463ee0b2 | 329 | { |
0f15f207 | 330 | dTHR; |
463ee0b2 LW |
331 | char *t; |
332 | char *n; | |
333 | char ch; | |
334 | int sawline = 0; | |
335 | ||
336 | curcop->cop_line++; | |
337 | if (*s++ != '#') | |
338 | return; | |
339 | while (*s == ' ' || *s == '\t') s++; | |
340 | if (strnEQ(s, "line ", 5)) { | |
341 | s += 5; | |
342 | sawline = 1; | |
343 | } | |
344 | if (!isDIGIT(*s)) | |
345 | return; | |
346 | n = s; | |
347 | while (isDIGIT(*s)) | |
348 | s++; | |
349 | while (*s == ' ' || *s == '\t') | |
350 | s++; | |
351 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
352 | s++; | |
353 | else { | |
354 | if (!sawline) | |
355 | return; /* false alarm */ | |
356 | for (t = s; !isSPACE(*t); t++) ; | |
357 | } | |
358 | ch = *t; | |
359 | *t = '\0'; | |
360 | if (t - s > 0) | |
361 | curcop->cop_filegv = gv_fetchfile(s); | |
362 | else | |
363 | curcop->cop_filegv = gv_fetchfile(origfilename); | |
364 | *t = ch; | |
365 | curcop->cop_line = atoi(n)-1; | |
366 | } | |
367 | ||
76e3520e | 368 | STATIC char * |
8ac85365 | 369 | skipspace(register char *s) |
a687059c | 370 | { |
11343788 | 371 | dTHR; |
85e6fe83 | 372 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
463ee0b2 LW |
373 | while (s < bufend && (*s == ' ' || *s == '\t')) |
374 | s++; | |
375 | return s; | |
376 | } | |
377 | for (;;) { | |
fd049845 | 378 | STRLEN prevlen; |
463ee0b2 LW |
379 | while (s < bufend && isSPACE(*s)) |
380 | s++; | |
381 | if (s < bufend && *s == '#') { | |
382 | while (s < bufend && *s != '\n') | |
383 | s++; | |
384 | if (s < bufend) | |
385 | s++; | |
386 | } | |
a0d0e21e | 387 | if (s < bufend || !rsfp || lex_state != LEX_NORMAL) |
463ee0b2 | 388 | return s; |
fd049845 | 389 | if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) { |
a0d0e21e | 390 | if (minus_n || minus_p) { |
08e9d68e DD |
391 | sv_setpv(linestr,minus_p ? |
392 | ";}continue{print or die qq(-p destination: $!\\n)" : | |
393 | ""); | |
a0d0e21e LW |
394 | sv_catpv(linestr,";}"); |
395 | minus_n = minus_p = 0; | |
396 | } | |
397 | else | |
398 | sv_setpv(linestr,";"); | |
fd049845 | 399 | oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr); |
a0d0e21e LW |
400 | bufend = SvPVX(linestr) + SvCUR(linestr); |
401 | if (preprocess && !in_eval) | |
6ad3d225 | 402 | (void)PerlProc_pclose(rsfp); |
760ac839 LW |
403 | else if ((PerlIO*)rsfp == PerlIO_stdin()) |
404 | PerlIO_clearerr(rsfp); | |
8990e307 | 405 | else |
760ac839 | 406 | (void)PerlIO_close(rsfp); |
8990e307 | 407 | rsfp = Nullfp; |
463ee0b2 LW |
408 | return s; |
409 | } | |
fd049845 | 410 | linestart = bufptr = s + prevlen; |
411 | bufend = s + SvCUR(linestr); | |
412 | s = bufptr; | |
a0d0e21e | 413 | incline(s); |
84902520 | 414 | if (PERLDB_LINE && curstash != debstash) { |
8990e307 LW |
415 | SV *sv = NEWSV(85,0); |
416 | ||
417 | sv_upgrade(sv, SVt_PVMG); | |
fd049845 | 418 | sv_setpvn(sv,bufptr,bufend-bufptr); |
8990e307 LW |
419 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); |
420 | } | |
463ee0b2 | 421 | } |
a687059c | 422 | } |
378cc40b | 423 | |
76e3520e | 424 | STATIC void |
8ac85365 | 425 | check_uni(void) { |
2f3197b3 LW |
426 | char *s; |
427 | char ch; | |
a0d0e21e | 428 | char *t; |
2f3197b3 LW |
429 | |
430 | if (oldoldbufptr != last_uni) | |
431 | return; | |
432 | while (isSPACE(*last_uni)) | |
433 | last_uni++; | |
e334a159 | 434 | for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ; |
a0d0e21e LW |
435 | if ((t = strchr(s, '(')) && t < bufptr) |
436 | return; | |
2f3197b3 LW |
437 | ch = *s; |
438 | *s = '\0'; | |
439 | warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni); | |
440 | *s = ch; | |
441 | } | |
442 | ||
ffed7fef LW |
443 | #ifdef CRIPPLED_CC |
444 | ||
445 | #undef UNI | |
ffed7fef | 446 | #define UNI(f) return uni(f,s) |
ffed7fef | 447 | |
76e3520e | 448 | STATIC int |
8ac85365 | 449 | uni(I32 f, char *s) |
ffed7fef LW |
450 | { |
451 | yylval.ival = f; | |
79072805 | 452 | expect = XTERM; |
ffed7fef | 453 | bufptr = s; |
2f3197b3 | 454 | last_uni = oldbufptr; |
a0d0e21e | 455 | last_lop_op = f; |
ffed7fef LW |
456 | if (*s == '(') |
457 | return FUNC1; | |
458 | s = skipspace(s); | |
459 | if (*s == '(') | |
460 | return FUNC1; | |
461 | else | |
462 | return UNIOP; | |
463 | } | |
464 | ||
a0d0e21e LW |
465 | #endif /* CRIPPLED_CC */ |
466 | ||
467 | #define LOP(f,x) return lop(f,x,s) | |
468 | ||
76e3520e | 469 | STATIC I32 |
0fa19009 | 470 | lop(I32 f, expectation x, char *s) |
ffed7fef | 471 | { |
0f15f207 | 472 | dTHR; |
79072805 | 473 | yylval.ival = f; |
35c8bce7 | 474 | CLINE; |
a0d0e21e | 475 | expect = x; |
79072805 | 476 | bufptr = s; |
8990e307 LW |
477 | last_lop = oldbufptr; |
478 | last_lop_op = f; | |
a0d0e21e LW |
479 | if (nexttoke) |
480 | return LSTOP; | |
79072805 LW |
481 | if (*s == '(') |
482 | return FUNC; | |
483 | s = skipspace(s); | |
484 | if (*s == '(') | |
485 | return FUNC; | |
486 | else | |
487 | return LSTOP; | |
488 | } | |
489 | ||
76e3520e | 490 | STATIC void |
8ac85365 | 491 | force_next(I32 type) |
79072805 LW |
492 | { |
493 | nexttype[nexttoke] = type; | |
494 | nexttoke++; | |
495 | if (lex_state != LEX_KNOWNEXT) { | |
496 | lex_defer = lex_state; | |
463ee0b2 | 497 | lex_expect = expect; |
79072805 LW |
498 | lex_state = LEX_KNOWNEXT; |
499 | } | |
500 | } | |
501 | ||
76e3520e | 502 | STATIC char * |
15f0808c | 503 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 504 | { |
463ee0b2 LW |
505 | register char *s; |
506 | STRLEN len; | |
507 | ||
508 | start = skipspace(start); | |
509 | s = start; | |
a0d0e21e LW |
510 | if (isIDFIRST(*s) || |
511 | (allow_pack && *s == ':') || | |
15f0808c | 512 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 513 | { |
8903cb82 | 514 | s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len); |
463ee0b2 LW |
515 | if (check_keyword && keyword(tokenbuf, len)) |
516 | return start; | |
517 | if (token == METHOD) { | |
518 | s = skipspace(s); | |
519 | if (*s == '(') | |
520 | expect = XTERM; | |
521 | else { | |
522 | expect = XOPERATOR; | |
523 | force_next(')'); | |
524 | force_next('('); | |
525 | } | |
79072805 | 526 | } |
463ee0b2 | 527 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0)); |
8990e307 | 528 | nextval[nexttoke].opval->op_private |= OPpCONST_BARE; |
79072805 LW |
529 | force_next(token); |
530 | } | |
531 | return s; | |
532 | } | |
533 | ||
76e3520e | 534 | STATIC void |
8ac85365 | 535 | force_ident(register char *s, int kind) |
79072805 LW |
536 | { |
537 | if (s && *s) { | |
11343788 MB |
538 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
539 | nextval[nexttoke].opval = o; | |
79072805 | 540 | force_next(WORD); |
748a9306 | 541 | if (kind) { |
e858de61 | 542 | dTHR; /* just for in_eval */ |
11343788 | 543 | o->op_private = OPpCONST_ENTERED; |
55497cff | 544 | /* XXX see note in pp_entereval() for why we forgo typo |
545 | warnings if the symbol must be introduced in an eval. | |
546 | GSAR 96-10-12 */ | |
93233ece | 547 | gv_fetchpv(s, in_eval ? (GV_ADDMULTI | 8) : TRUE, |
a0d0e21e LW |
548 | kind == '$' ? SVt_PV : |
549 | kind == '@' ? SVt_PVAV : | |
550 | kind == '%' ? SVt_PVHV : | |
551 | SVt_PVGV | |
552 | ); | |
748a9306 | 553 | } |
79072805 LW |
554 | } |
555 | } | |
556 | ||
76e3520e | 557 | STATIC char * |
8ac85365 | 558 | force_version(char *s) |
89bfa8cd | 559 | { |
560 | OP *version = Nullop; | |
561 | ||
562 | s = skipspace(s); | |
563 | ||
564 | /* default VERSION number -- GBARR */ | |
565 | ||
566 | if(isDIGIT(*s)) { | |
567 | char *d; | |
568 | int c; | |
55497cff | 569 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 570 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
571 | s = scan_num(s); | |
572 | /* real VERSION number -- GBARR */ | |
573 | version = yylval.opval; | |
574 | } | |
575 | } | |
576 | ||
577 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
578 | nextval[nexttoke].opval = version; | |
579 | force_next(WORD); | |
580 | ||
581 | return (s); | |
582 | } | |
583 | ||
76e3520e GS |
584 | STATIC SV * |
585 | tokeq(SV *sv) | |
79072805 LW |
586 | { |
587 | register char *s; | |
588 | register char *send; | |
589 | register char *d; | |
b3ac6de7 IZ |
590 | STRLEN len = 0; |
591 | SV *pv = sv; | |
79072805 LW |
592 | |
593 | if (!SvLEN(sv)) | |
b3ac6de7 | 594 | goto finish; |
79072805 | 595 | |
a0d0e21e | 596 | s = SvPV_force(sv, len); |
748a9306 | 597 | if (SvIVX(sv) == -1) |
b3ac6de7 | 598 | goto finish; |
463ee0b2 | 599 | send = s + len; |
79072805 LW |
600 | while (s < send && *s != '\\') |
601 | s++; | |
602 | if (s == send) | |
b3ac6de7 | 603 | goto finish; |
79072805 | 604 | d = s; |
b3ac6de7 IZ |
605 | if ( hints & HINT_NEW_STRING ) |
606 | pv = sv_2mortal(newSVpv(SvPVX(pv), len)); | |
79072805 LW |
607 | while (s < send) { |
608 | if (*s == '\\') { | |
a0d0e21e | 609 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
610 | s++; /* all that, just for this */ |
611 | } | |
612 | *d++ = *s++; | |
613 | } | |
614 | *d = '\0'; | |
463ee0b2 | 615 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 IZ |
616 | finish: |
617 | if ( hints & HINT_NEW_STRING ) | |
618 | return new_constant(NULL, 0, "q", sv, pv, "q"); | |
79072805 LW |
619 | return sv; |
620 | } | |
621 | ||
76e3520e | 622 | STATIC I32 |
8ac85365 | 623 | sublex_start(void) |
79072805 LW |
624 | { |
625 | register I32 op_type = yylval.ival; | |
79072805 LW |
626 | |
627 | if (op_type == OP_NULL) { | |
628 | yylval.opval = lex_op; | |
629 | lex_op = Nullop; | |
630 | return THING; | |
631 | } | |
632 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
76e3520e | 633 | SV *sv = tokeq(lex_stuff); |
b3ac6de7 IZ |
634 | |
635 | if (SvTYPE(sv) == SVt_PVIV) { | |
636 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
637 | STRLEN len; | |
638 | char *p; | |
639 | SV *nsv; | |
640 | ||
641 | p = SvPV(sv, len); | |
642 | nsv = newSVpv(p, len); | |
643 | SvREFCNT_dec(sv); | |
644 | sv = nsv; | |
645 | } | |
646 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
79072805 LW |
647 | lex_stuff = Nullsv; |
648 | return THING; | |
649 | } | |
650 | ||
55497cff | 651 | sublex_info.super_state = lex_state; |
652 | sublex_info.sub_inwhat = op_type; | |
653 | sublex_info.sub_op = lex_op; | |
654 | lex_state = LEX_INTERPPUSH; | |
655 | ||
656 | expect = XTERM; | |
657 | if (lex_op) { | |
658 | yylval.opval = lex_op; | |
659 | lex_op = Nullop; | |
660 | return PMFUNC; | |
661 | } | |
662 | else | |
663 | return FUNC; | |
664 | } | |
665 | ||
76e3520e | 666 | STATIC I32 |
8ac85365 | 667 | sublex_push(void) |
55497cff | 668 | { |
0f15f207 | 669 | dTHR; |
f46d017c | 670 | ENTER; |
55497cff | 671 | |
672 | lex_state = sublex_info.super_state; | |
673 | SAVEI32(lex_dojoin); | |
674 | SAVEI32(lex_brackets); | |
675 | SAVEI32(lex_fakebrack); | |
676 | SAVEI32(lex_casemods); | |
677 | SAVEI32(lex_starts); | |
678 | SAVEI32(lex_state); | |
a0d0e21e | 679 | SAVESPTR(lex_inpat); |
55497cff | 680 | SAVEI32(lex_inwhat); |
681 | SAVEI16(curcop->cop_line); | |
85e6fe83 LW |
682 | SAVEPPTR(bufptr); |
683 | SAVEPPTR(oldbufptr); | |
684 | SAVEPPTR(oldoldbufptr); | |
fd049845 | 685 | SAVEPPTR(linestart); |
79072805 | 686 | SAVESPTR(linestr); |
85e6fe83 | 687 | SAVEPPTR(lex_brackstack); |
a0d0e21e | 688 | SAVEPPTR(lex_casestack); |
79072805 LW |
689 | |
690 | linestr = lex_stuff; | |
691 | lex_stuff = Nullsv; | |
692 | ||
fd049845 | 693 | bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr); |
79072805 | 694 | bufend += SvCUR(linestr); |
8990e307 | 695 | SAVEFREESV(linestr); |
79072805 LW |
696 | |
697 | lex_dojoin = FALSE; | |
698 | lex_brackets = 0; | |
699 | lex_fakebrack = 0; | |
8990e307 | 700 | New(899, lex_brackstack, 120, char); |
a0d0e21e | 701 | New(899, lex_casestack, 12, char); |
8990e307 | 702 | SAVEFREEPV(lex_brackstack); |
a0d0e21e | 703 | SAVEFREEPV(lex_casestack); |
79072805 | 704 | lex_casemods = 0; |
a0d0e21e | 705 | *lex_casestack = '\0'; |
79072805 LW |
706 | lex_starts = 0; |
707 | lex_state = LEX_INTERPCONCAT; | |
708 | curcop->cop_line = multi_start; | |
709 | ||
55497cff | 710 | lex_inwhat = sublex_info.sub_inwhat; |
711 | if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST) | |
712 | lex_inpat = sublex_info.sub_op; | |
79072805 | 713 | else |
55497cff | 714 | lex_inpat = Nullop; |
79072805 | 715 | |
55497cff | 716 | return '('; |
79072805 LW |
717 | } |
718 | ||
76e3520e | 719 | STATIC I32 |
8ac85365 | 720 | sublex_done(void) |
79072805 LW |
721 | { |
722 | if (!lex_starts++) { | |
723 | expect = XOPERATOR; | |
93a17b20 | 724 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0)); |
79072805 LW |
725 | return THING; |
726 | } | |
727 | ||
728 | if (lex_casemods) { /* oops, we've got some unbalanced parens */ | |
729 | lex_state = LEX_INTERPCASEMOD; | |
730 | return yylex(); | |
731 | } | |
732 | ||
79072805 LW |
733 | /* Is there a right-hand side to take care of? */ |
734 | if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) { | |
735 | linestr = lex_repl; | |
736 | lex_inpat = 0; | |
fd049845 | 737 | bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr); |
79072805 | 738 | bufend += SvCUR(linestr); |
8990e307 | 739 | SAVEFREESV(linestr); |
79072805 LW |
740 | lex_dojoin = FALSE; |
741 | lex_brackets = 0; | |
742 | lex_fakebrack = 0; | |
743 | lex_casemods = 0; | |
a0d0e21e | 744 | *lex_casestack = '\0'; |
79072805 LW |
745 | lex_starts = 0; |
746 | if (SvCOMPILED(lex_repl)) { | |
747 | lex_state = LEX_INTERPNORMAL; | |
748 | lex_starts++; | |
749 | } | |
750 | else | |
751 | lex_state = LEX_INTERPCONCAT; | |
752 | lex_repl = Nullsv; | |
753 | return ','; | |
ffed7fef LW |
754 | } |
755 | else { | |
f46d017c | 756 | LEAVE; |
463ee0b2 | 757 | bufend = SvPVX(linestr); |
79072805 LW |
758 | bufend += SvCUR(linestr); |
759 | expect = XOPERATOR; | |
760 | return ')'; | |
ffed7fef LW |
761 | } |
762 | } | |
763 | ||
02aa26ce NT |
764 | /* |
765 | scan_const | |
766 | ||
767 | Extracts a pattern, double-quoted string, or transliteration. This | |
768 | is terrifying code. | |
769 | ||
770 | It looks at lex_inwhat and lex_inpat to find out whether it's | |
771 | processing a pattern (lex_inpat is true), a transliteration | |
772 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. | |
773 | ||
9b599b2a GS |
774 | Returns a pointer to the character scanned up to. Iff this is |
775 | advanced from the start pointer supplied (ie if anything was | |
776 | successfully parsed), will leave an OP for the substring scanned | |
777 | in yylval. Caller must intuit reason for not parsing further | |
778 | by looking at the next characters herself. | |
779 | ||
02aa26ce NT |
780 | In patterns: |
781 | backslashes: | |
782 | double-quoted style: \r and \n | |
783 | regexp special ones: \D \s | |
784 | constants: \x3 | |
785 | backrefs: \1 (deprecated in substitution replacements) | |
786 | case and quoting: \U \Q \E | |
787 | stops on @ and $, but not for $ as tail anchor | |
788 | ||
789 | In transliterations: | |
790 | characters are VERY literal, except for - not at the start or end | |
791 | of the string, which indicates a range. scan_const expands the | |
792 | range to the full set of intermediate characters. | |
793 | ||
794 | In double-quoted strings: | |
795 | backslashes: | |
796 | double-quoted style: \r and \n | |
797 | constants: \x3 | |
798 | backrefs: \1 (deprecated) | |
799 | case and quoting: \U \Q \E | |
800 | stops on @ and $ | |
801 | ||
802 | scan_const does *not* construct ops to handle interpolated strings. | |
803 | It stops processing as soon as it finds an embedded $ or @ variable | |
804 | and leaves it to the caller to work out what's going on. | |
805 | ||
806 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
807 | ||
808 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
809 | it's a tail anchor if $ is the last thing in the string, or if it's | |
810 | followed by one of ")| \n\t" | |
811 | ||
812 | \1 (backreferences) are turned into $1 | |
813 | ||
814 | The structure of the code is | |
815 | while (there's a character to process) { | |
816 | handle transliteration ranges | |
817 | skip regexp comments | |
818 | skip # initiated comments in //x patterns | |
819 | check for embedded @foo | |
820 | check for embedded scalars | |
821 | if (backslash) { | |
822 | leave intact backslashes from leave (below) | |
823 | deprecate \1 in strings and sub replacements | |
824 | handle string-changing backslashes \l \U \Q \E, etc. | |
825 | switch (what was escaped) { | |
826 | handle - in a transliteration (becomes a literal -) | |
827 | handle \132 octal characters | |
828 | handle 0x15 hex characters | |
829 | handle \cV (control V) | |
830 | handle printf backslashes (\f, \r, \n, etc) | |
831 | } (end switch) | |
832 | } (end if backslash) | |
833 | } (end while character to read) | |
834 | ||
835 | */ | |
836 | ||
76e3520e | 837 | STATIC char * |
8ac85365 | 838 | scan_const(char *start) |
79072805 | 839 | { |
02aa26ce NT |
840 | register char *send = bufend; /* end of the constant */ |
841 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ | |
842 | register char *s = start; /* start of the constant */ | |
843 | register char *d = SvPVX(sv); /* destination for copies */ | |
844 | bool dorange = FALSE; /* are we in a translit range? */ | |
845 | I32 len; /* ? */ | |
846 | ||
9b599b2a | 847 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 848 | char *leaveit = |
79072805 | 849 | lex_inpat |
b85d18e9 | 850 | ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 851 | : ""; |
79072805 LW |
852 | |
853 | while (s < send || dorange) { | |
02aa26ce | 854 | /* get transliterations out of the way (they're most literal) */ |
79072805 | 855 | if (lex_inwhat == OP_TRANS) { |
02aa26ce | 856 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 857 | if (dorange) { |
02aa26ce NT |
858 | I32 i; /* current expanded character */ |
859 | I32 max; /* last character in range */ | |
860 | ||
861 | i = d - SvPVX(sv); /* remember current offset */ | |
862 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
863 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
864 | d -= 2; /* eat the first char and the - */ | |
865 | ||
866 | max = (U8)d[1]; /* last char in range */ | |
867 | ||
91b7def8 | 868 | for (i = (U8)*d; i <= max; i++) |
79072805 | 869 | *d++ = i; |
02aa26ce NT |
870 | |
871 | /* mark the range as done, and continue */ | |
79072805 LW |
872 | dorange = FALSE; |
873 | continue; | |
874 | } | |
02aa26ce NT |
875 | |
876 | /* range begins (ignore - as first or last char) */ | |
79072805 LW |
877 | else if (*s == '-' && s+1 < send && s != start) { |
878 | dorange = TRUE; | |
879 | s++; | |
880 | } | |
881 | } | |
02aa26ce NT |
882 | |
883 | /* if we get here, we're not doing a transliteration */ | |
884 | ||
885 | /* skip for regexp comments /(?#comment)/ */ | |
cc6b7395 IZ |
886 | else if (*s == '(' && lex_inpat && s[1] == '?') { |
887 | if (s[2] == '#') { | |
888 | while (s < send && *s != ')') | |
889 | *d++ = *s++; | |
890 | } else if (s[2] == '{') { /* This should march regcomp.c */ | |
891 | I32 count = 1; | |
d9f97599 | 892 | char *regparse = s + 3; |
cc6b7395 IZ |
893 | char c; |
894 | ||
d9f97599 GS |
895 | while (count && (c = *regparse)) { |
896 | if (c == '\\' && regparse[1]) | |
897 | regparse++; | |
cc6b7395 IZ |
898 | else if (c == '{') |
899 | count++; | |
900 | else if (c == '}') | |
901 | count--; | |
d9f97599 | 902 | regparse++; |
cc6b7395 | 903 | } |
d9f97599 GS |
904 | if (*regparse == ')') |
905 | regparse++; | |
cc6b7395 IZ |
906 | else |
907 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); | |
d9f97599 | 908 | while (s < regparse && *s != ')') |
cc6b7395 IZ |
909 | *d++ = *s++; |
910 | } | |
748a9306 | 911 | } |
02aa26ce NT |
912 | |
913 | /* likewise skip #-initiated comments in //x patterns */ | |
748a9306 LW |
914 | else if (*s == '#' && lex_inpat && |
915 | ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
916 | while (s+1 < send && *s != '\n') | |
917 | *d++ = *s++; | |
918 | } | |
02aa26ce NT |
919 | |
920 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
a0d0e21e | 921 | else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1]))) |
79072805 | 922 | break; |
02aa26ce NT |
923 | |
924 | /* check for embedded scalars. only stop if we're sure it's a | |
925 | variable. | |
926 | */ | |
79072805 LW |
927 | else if (*s == '$') { |
928 | if (!lex_inpat) /* not a regexp, so $ must be var */ | |
929 | break; | |
c277df42 | 930 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
931 | break; /* in regexp, $ might be tail anchor */ |
932 | } | |
02aa26ce NT |
933 | |
934 | /* backslashes */ | |
79072805 LW |
935 | if (*s == '\\' && s+1 < send) { |
936 | s++; | |
02aa26ce NT |
937 | |
938 | /* some backslashes we leave behind */ | |
72aaf631 | 939 | if (*s && strchr(leaveit, *s)) { |
79072805 LW |
940 | *d++ = '\\'; |
941 | *d++ = *s++; | |
942 | continue; | |
943 | } | |
02aa26ce NT |
944 | |
945 | /* deprecate \1 in strings and substitution replacements */ | |
79072805 | 946 | if (lex_inwhat == OP_SUBST && !lex_inpat && |
a0d0e21e | 947 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 948 | { |
a0d0e21e LW |
949 | if (dowarn) |
950 | warn("\\%c better written as $%c", *s, *s); | |
79072805 LW |
951 | *--s = '$'; |
952 | break; | |
953 | } | |
02aa26ce NT |
954 | |
955 | /* string-change backslash escapes */ | |
a0d0e21e | 956 | if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
957 | --s; |
958 | break; | |
959 | } | |
02aa26ce NT |
960 | |
961 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 962 | switch (*s) { |
02aa26ce NT |
963 | |
964 | /* quoted - in transliterations */ | |
79072805 LW |
965 | case '-': |
966 | if (lex_inwhat == OP_TRANS) { | |
967 | *d++ = *s++; | |
968 | continue; | |
969 | } | |
970 | /* FALL THROUGH */ | |
02aa26ce | 971 | /* default action is to copy the quoted character */ |
79072805 LW |
972 | default: |
973 | *d++ = *s++; | |
974 | continue; | |
02aa26ce NT |
975 | |
976 | /* \132 indicates an octal constant */ | |
79072805 LW |
977 | case '0': case '1': case '2': case '3': |
978 | case '4': case '5': case '6': case '7': | |
979 | *d++ = scan_oct(s, 3, &len); | |
980 | s += len; | |
981 | continue; | |
02aa26ce NT |
982 | |
983 | /* \x24 indicates a hex constant */ | |
79072805 LW |
984 | case 'x': |
985 | *d++ = scan_hex(++s, 2, &len); | |
986 | s += len; | |
987 | continue; | |
02aa26ce NT |
988 | |
989 | /* \c is a control character */ | |
79072805 LW |
990 | case 'c': |
991 | s++; | |
bbce6d69 | 992 | len = *s++; |
993 | *d++ = toCTRL(len); | |
79072805 | 994 | continue; |
02aa26ce NT |
995 | |
996 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
997 | case 'b': |
998 | *d++ = '\b'; | |
999 | break; | |
1000 | case 'n': | |
1001 | *d++ = '\n'; | |
1002 | break; | |
1003 | case 'r': | |
1004 | *d++ = '\r'; | |
1005 | break; | |
1006 | case 'f': | |
1007 | *d++ = '\f'; | |
1008 | break; | |
1009 | case 't': | |
1010 | *d++ = '\t'; | |
1011 | break; | |
1012 | case 'e': | |
1013 | *d++ = '\033'; | |
1014 | break; | |
1015 | case 'a': | |
1016 | *d++ = '\007'; | |
1017 | break; | |
02aa26ce NT |
1018 | } /* end switch */ |
1019 | ||
79072805 LW |
1020 | s++; |
1021 | continue; | |
02aa26ce NT |
1022 | } /* end if (backslash) */ |
1023 | ||
79072805 | 1024 | *d++ = *s++; |
02aa26ce NT |
1025 | } /* while loop to process each character */ |
1026 | ||
1027 | /* terminate the string and set up the sv */ | |
79072805 | 1028 | *d = '\0'; |
463ee0b2 | 1029 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1030 | SvPOK_on(sv); |
1031 | ||
02aa26ce | 1032 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1033 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1034 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1035 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1036 | } |
02aa26ce | 1037 | |
9b599b2a | 1038 | /* return the substring (via yylval) only if we parsed anything */ |
b3ac6de7 IZ |
1039 | if (s > bufptr) { |
1040 | if ( hints & ( lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1041 | sv = new_constant(start, s - start, (lex_inpat ? "qr" : "q"), | |
1042 | sv, Nullsv, | |
1043 | ( lex_inwhat == OP_TRANS | |
1044 | ? "tr" | |
1045 | : ( (lex_inwhat == OP_SUBST && !lex_inpat) | |
1046 | ? "s" | |
1047 | : "qq"))); | |
79072805 | 1048 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1049 | } else |
8990e307 | 1050 | SvREFCNT_dec(sv); |
79072805 LW |
1051 | return s; |
1052 | } | |
1053 | ||
1054 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
76e3520e | 1055 | STATIC int |
8ac85365 | 1056 | intuit_more(register char *s) |
79072805 LW |
1057 | { |
1058 | if (lex_brackets) | |
1059 | return TRUE; | |
1060 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1061 | return TRUE; | |
1062 | if (*s != '{' && *s != '[') | |
1063 | return FALSE; | |
1064 | if (!lex_inpat) | |
1065 | return TRUE; | |
1066 | ||
1067 | /* In a pattern, so maybe we have {n,m}. */ | |
1068 | if (*s == '{') { | |
1069 | s++; | |
1070 | if (!isDIGIT(*s)) | |
1071 | return TRUE; | |
1072 | while (isDIGIT(*s)) | |
1073 | s++; | |
1074 | if (*s == ',') | |
1075 | s++; | |
1076 | while (isDIGIT(*s)) | |
1077 | s++; | |
1078 | if (*s == '}') | |
1079 | return FALSE; | |
1080 | return TRUE; | |
1081 | ||
1082 | } | |
1083 | ||
1084 | /* On the other hand, maybe we have a character class */ | |
1085 | ||
1086 | s++; | |
1087 | if (*s == ']' || *s == '^') | |
1088 | return FALSE; | |
1089 | else { | |
1090 | int weight = 2; /* let's weigh the evidence */ | |
1091 | char seen[256]; | |
f27ffc4a | 1092 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1093 | char *send = strchr(s,']'); |
8903cb82 | 1094 | char tmpbuf[sizeof tokenbuf * 4]; |
79072805 LW |
1095 | |
1096 | if (!send) /* has to be an expression */ | |
1097 | return TRUE; | |
1098 | ||
1099 | Zero(seen,256,char); | |
1100 | if (*s == '$') | |
1101 | weight -= 3; | |
1102 | else if (isDIGIT(*s)) { | |
1103 | if (s[1] != ']') { | |
1104 | if (isDIGIT(s[1]) && s[2] == ']') | |
1105 | weight -= 10; | |
1106 | } | |
1107 | else | |
1108 | weight -= 100; | |
1109 | } | |
1110 | for (; s < send; s++) { | |
1111 | last_un_char = un_char; | |
1112 | un_char = (unsigned char)*s; | |
1113 | switch (*s) { | |
1114 | case '@': | |
1115 | case '&': | |
1116 | case '$': | |
1117 | weight -= seen[un_char] * 10; | |
1118 | if (isALNUM(s[1])) { | |
8903cb82 | 1119 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1120 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1121 | weight -= 100; |
1122 | else | |
1123 | weight -= 10; | |
1124 | } | |
1125 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1126 | strchr("[#!%*<>()-=",s[1])) { |
1127 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1128 | weight -= 10; |
1129 | else | |
1130 | weight -= 1; | |
1131 | } | |
1132 | break; | |
1133 | case '\\': | |
1134 | un_char = 254; | |
1135 | if (s[1]) { | |
93a17b20 | 1136 | if (strchr("wds]",s[1])) |
79072805 LW |
1137 | weight += 100; |
1138 | else if (seen['\''] || seen['"']) | |
1139 | weight += 1; | |
93a17b20 | 1140 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1141 | weight += 40; |
1142 | else if (isDIGIT(s[1])) { | |
1143 | weight += 40; | |
1144 | while (s[1] && isDIGIT(s[1])) | |
1145 | s++; | |
1146 | } | |
1147 | } | |
1148 | else | |
1149 | weight += 100; | |
1150 | break; | |
1151 | case '-': | |
1152 | if (s[1] == '\\') | |
1153 | weight += 50; | |
93a17b20 | 1154 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1155 | weight += 30; |
93a17b20 | 1156 | if (strchr("zZ79~",s[1])) |
79072805 | 1157 | weight += 30; |
f27ffc4a GS |
1158 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1159 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1160 | break; |
1161 | default: | |
93a17b20 | 1162 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1163 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1164 | char *d = tmpbuf; | |
1165 | while (isALPHA(*s)) | |
1166 | *d++ = *s++; | |
1167 | *d = '\0'; | |
1168 | if (keyword(tmpbuf, d - tmpbuf)) | |
1169 | weight -= 150; | |
1170 | } | |
1171 | if (un_char == last_un_char + 1) | |
1172 | weight += 5; | |
1173 | weight -= seen[un_char]; | |
1174 | break; | |
1175 | } | |
1176 | seen[un_char]++; | |
1177 | } | |
1178 | if (weight >= 0) /* probably a character class */ | |
1179 | return FALSE; | |
1180 | } | |
1181 | ||
1182 | return TRUE; | |
1183 | } | |
ffed7fef | 1184 | |
76e3520e | 1185 | STATIC int |
8ac85365 | 1186 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1187 | { |
1188 | char *s = start + (*start == '$'); | |
8903cb82 | 1189 | char tmpbuf[sizeof tokenbuf]; |
a0d0e21e LW |
1190 | STRLEN len; |
1191 | GV* indirgv; | |
1192 | ||
1193 | if (gv) { | |
b6c543e3 | 1194 | CV *cv; |
a0d0e21e LW |
1195 | if (GvIO(gv)) |
1196 | return 0; | |
b6c543e3 IZ |
1197 | if ((cv = GvCVu(gv))) { |
1198 | char *proto = SvPVX(cv); | |
1199 | if (proto) { | |
1200 | if (*proto == ';') | |
1201 | proto++; | |
1202 | if (*proto == '*') | |
1203 | return 0; | |
1204 | } | |
1205 | } else | |
a0d0e21e LW |
1206 | gv = 0; |
1207 | } | |
8903cb82 | 1208 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e LW |
1209 | if (*start == '$') { |
1210 | if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf)) | |
1211 | return 0; | |
1212 | s = skipspace(s); | |
1213 | bufptr = start; | |
1214 | expect = XREF; | |
1215 | return *s == '(' ? FUNCMETH : METHOD; | |
1216 | } | |
1217 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1218 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1219 | len -= 2; | |
1220 | tmpbuf[len] = '\0'; | |
1221 | goto bare_package; | |
1222 | } | |
1223 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1224 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1225 | return 0; |
1226 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1227 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1228 | s = skipspace(s); |
55497cff | 1229 | if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
1230 | return 0; /* no assumptions -- "=>" quotes bearword */ | |
c3e0f903 GS |
1231 | bare_package: |
1232 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, | |
1233 | newSVpv(tmpbuf,0)); | |
1234 | nextval[nexttoke].opval->op_private = OPpCONST_BARE; | |
a0d0e21e LW |
1235 | expect = XTERM; |
1236 | force_next(WORD); | |
1237 | bufptr = s; | |
1238 | return *s == '(' ? FUNCMETH : METHOD; | |
1239 | } | |
1240 | } | |
1241 | return 0; | |
1242 | } | |
1243 | ||
76e3520e | 1244 | STATIC char* |
8ac85365 | 1245 | incl_perldb(void) |
a0d0e21e LW |
1246 | { |
1247 | if (perldb) { | |
76e3520e | 1248 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1249 | |
1250 | if (pdb) | |
1251 | return pdb; | |
61bb5906 | 1252 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1253 | return "BEGIN { require 'perl5db.pl' }"; |
1254 | } | |
1255 | return ""; | |
1256 | } | |
1257 | ||
1258 | ||
16d20bd9 AD |
1259 | /* Encoded script support. filter_add() effectively inserts a |
1260 | * 'pre-processing' function into the current source input stream. | |
1261 | * Note that the filter function only applies to the current source file | |
1262 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1263 | * | |
1264 | * The datasv parameter (which may be NULL) can be used to pass | |
1265 | * private data to this instance of the filter. The filter function | |
1266 | * can recover the SV using the FILTER_DATA macro and use it to | |
1267 | * store private buffers and state information. | |
1268 | * | |
1269 | * The supplied datasv parameter is upgraded to a PVIO type | |
1270 | * and the IoDIRP field is used to store the function pointer. | |
1271 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1272 | * private use must be set using malloc'd pointers. | |
1273 | */ | |
1274 | static int filter_debug = 0; | |
1275 | ||
1276 | SV * | |
8ac85365 | 1277 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1278 | { |
1279 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
1280 | filter_debug = atoi((char*)datasv); | |
1281 | return NULL; | |
1282 | } | |
1283 | if (!rsfp_filters) | |
1284 | rsfp_filters = newAV(); | |
1285 | if (!datasv) | |
8c52afec | 1286 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1287 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1288 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1289 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
1290 | if (filter_debug) | |
ff0cee69 | 1291 | warn("filter_add func %p (%s)", funcp, SvPV(datasv,na)); |
e50aee73 AD |
1292 | av_unshift(rsfp_filters, 1); |
1293 | av_store(rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1294 | return(datasv); |
1295 | } | |
1296 | ||
1297 | ||
1298 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1299 | void |
8ac85365 | 1300 | filter_del(filter_t funcp) |
16d20bd9 AD |
1301 | { |
1302 | if (filter_debug) | |
ff0cee69 | 1303 | warn("filter_del func %p", funcp); |
93965878 | 1304 | if (!rsfp_filters || AvFILLp(rsfp_filters)<0) |
16d20bd9 AD |
1305 | return; |
1306 | /* if filter is on top of stack (usual case) just pop it off */ | |
93965878 | 1307 | if (IoDIRP(FILTER_DATA(AvFILLp(rsfp_filters))) == (void*)funcp){ |
ff2faa2b | 1308 | sv_free(av_pop(rsfp_filters)); |
e50aee73 | 1309 | |
16d20bd9 AD |
1310 | return; |
1311 | } | |
1312 | /* we need to search for the correct entry and clear it */ | |
1313 | die("filter_del can only delete in reverse order (currently)"); | |
1314 | } | |
1315 | ||
1316 | ||
1317 | /* Invoke the n'th filter function for the current rsfp. */ | |
1318 | I32 | |
8ac85365 NIS |
1319 | filter_read(int idx, SV *buf_sv, int maxlen) |
1320 | ||
1321 | ||
1322 | /* 0 = read one text line */ | |
a0d0e21e | 1323 | { |
16d20bd9 AD |
1324 | filter_t funcp; |
1325 | SV *datasv = NULL; | |
e50aee73 | 1326 | |
16d20bd9 AD |
1327 | if (!rsfp_filters) |
1328 | return -1; | |
93965878 | 1329 | if (idx > AvFILLp(rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1330 | /* Provide a default input filter to make life easy. */ |
1331 | /* Note that we append to the line. This is handy. */ | |
16d20bd9 AD |
1332 | if (filter_debug) |
1333 | warn("filter_read %d: from rsfp\n", idx); | |
1334 | if (maxlen) { | |
1335 | /* Want a block */ | |
1336 | int len ; | |
1337 | int old_len = SvCUR(buf_sv) ; | |
1338 | ||
1339 | /* ensure buf_sv is large enough */ | |
1340 | SvGROW(buf_sv, old_len + maxlen) ; | |
760ac839 LW |
1341 | if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1342 | if (PerlIO_error(rsfp)) | |
37120919 AD |
1343 | return -1; /* error */ |
1344 | else | |
1345 | return 0 ; /* end of file */ | |
1346 | } | |
16d20bd9 AD |
1347 | SvCUR_set(buf_sv, old_len + len) ; |
1348 | } else { | |
1349 | /* Want a line */ | |
37120919 | 1350 | if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) { |
760ac839 | 1351 | if (PerlIO_error(rsfp)) |
37120919 AD |
1352 | return -1; /* error */ |
1353 | else | |
1354 | return 0 ; /* end of file */ | |
1355 | } | |
16d20bd9 AD |
1356 | } |
1357 | return SvCUR(buf_sv); | |
1358 | } | |
1359 | /* Skip this filter slot if filter has been deleted */ | |
1360 | if ( (datasv = FILTER_DATA(idx)) == &sv_undef){ | |
1361 | if (filter_debug) | |
1362 | warn("filter_read %d: skipped (filter deleted)\n", idx); | |
1363 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1364 | } | |
1365 | /* Get function pointer hidden within datasv */ | |
1366 | funcp = (filter_t)IoDIRP(datasv); | |
1367 | if (filter_debug) | |
ff0cee69 | 1368 | warn("filter_read %d: via function %p (%s)\n", |
16d20bd9 AD |
1369 | idx, funcp, SvPV(datasv,na)); |
1370 | /* Call function. The function is expected to */ | |
1371 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1372 | /* Return: <0:error, =0:eof, >0:not eof */ |
1d583055 | 1373 | return (*funcp)(PERL_OBJECT_THIS_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1374 | } |
1375 | ||
76e3520e GS |
1376 | STATIC char * |
1377 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) | |
16d20bd9 | 1378 | { |
a868473f NIS |
1379 | #ifdef WIN32FILTER |
1380 | if (!rsfp_filters) { | |
1381 | filter_add(win32_textfilter,NULL); | |
1382 | } | |
1383 | #endif | |
16d20bd9 AD |
1384 | if (rsfp_filters) { |
1385 | ||
55497cff | 1386 | if (!append) |
1387 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1388 | if (FILTER_READ(0, sv, 0) > 0) |
1389 | return ( SvPVX(sv) ) ; | |
1390 | else | |
1391 | return Nullch ; | |
1392 | } | |
1393 | else | |
fd049845 | 1394 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1395 | } |
1396 | ||
1397 | ||
748a9306 LW |
1398 | #ifdef DEBUGGING |
1399 | static char* exp_name[] = | |
a0d0e21e | 1400 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1401 | #endif |
463ee0b2 | 1402 | |
71be2cbc | 1403 | EXT int yychar; /* last token */ |
463ee0b2 | 1404 | |
02aa26ce NT |
1405 | /* |
1406 | yylex | |
1407 | ||
1408 | Works out what to call the token just pulled out of the input | |
1409 | stream. The yacc parser takes care of taking the ops we return and | |
1410 | stitching them into a tree. | |
1411 | ||
1412 | Returns: | |
1413 | PRIVATEREF | |
1414 | ||
1415 | Structure: | |
1416 | if read an identifier | |
1417 | if we're in a my declaration | |
1418 | croak if they tried to say my($foo::bar) | |
1419 | build the ops for a my() declaration | |
1420 | if it's an access to a my() variable | |
1421 | are we in a sort block? | |
1422 | croak if my($a); $a <=> $b | |
1423 | build ops for access to a my() variable | |
1424 | if in a dq string, and they've said @foo and we can't find @foo | |
1425 | croak | |
1426 | build ops for a bareword | |
1427 | if we already built the token before, use it. | |
1428 | */ | |
1429 | ||
2f3197b3 | 1430 | int |
8ac85365 | 1431 | yylex(void) |
378cc40b | 1432 | { |
11343788 | 1433 | dTHR; |
79072805 | 1434 | register char *s; |
378cc40b | 1435 | register char *d; |
79072805 | 1436 | register I32 tmp; |
463ee0b2 | 1437 | STRLEN len; |
161b471a NIS |
1438 | GV *gv = Nullgv; |
1439 | GV **gvp = 0; | |
a687059c | 1440 | |
02aa26ce | 1441 | /* check if there's an identifier for us to look at */ |
bbce6d69 | 1442 | if (pending_ident) { |
02aa26ce | 1443 | /* pit holds the identifier we read and pending_ident is reset */ |
bbce6d69 | 1444 | char pit = pending_ident; |
1445 | pending_ident = 0; | |
1446 | ||
02aa26ce NT |
1447 | /* if we're in a my(), we can't allow dynamics here. |
1448 | $foo'bar has already been turned into $foo::bar, so | |
1449 | just check for colons. | |
1450 | ||
1451 | if it's a legal name, the OP is a PADANY. | |
1452 | */ | |
bbce6d69 | 1453 | if (in_my) { |
1454 | if (strchr(tokenbuf,':')) | |
1455 | croak(no_myglob,tokenbuf); | |
02aa26ce | 1456 | |
bbce6d69 | 1457 | yylval.opval = newOP(OP_PADANY, 0); |
1458 | yylval.opval->op_targ = pad_allocmy(tokenbuf); | |
1459 | return PRIVATEREF; | |
1460 | } | |
1461 | ||
02aa26ce NT |
1462 | /* |
1463 | build the ops for accesses to a my() variable. | |
1464 | ||
1465 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1466 | then used in a comparison. This catches most, but not | |
1467 | all cases. For instance, it catches | |
1468 | sort { my($a); $a <=> $b } | |
1469 | but not | |
1470 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1471 | (although why you'd do that is anyone's guess). | |
1472 | */ | |
1473 | ||
a863c7d1 MB |
1474 | if (!strchr(tokenbuf,':')) { |
1475 | #ifdef USE_THREADS | |
54b9620d | 1476 | /* Check for single character per-thread SVs */ |
a863c7d1 | 1477 | if (tokenbuf[0] == '$' && tokenbuf[2] == '\0' |
54b9620d MB |
1478 | && !isALPHA(tokenbuf[1]) /* Rule out obvious non-threadsvs */ |
1479 | && (tmp = find_threadsv(&tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1480 | { |
2faa37cc | 1481 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1482 | yylval.opval->op_targ = tmp; |
1483 | return PRIVATEREF; | |
1484 | } | |
1485 | #endif /* USE_THREADS */ | |
1486 | if ((tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) { | |
02aa26ce | 1487 | /* if it's a sort block and they're naming $a or $b */ |
a863c7d1 MB |
1488 | if (last_lop_op == OP_SORT && |
1489 | tokenbuf[0] == '$' && | |
1490 | (tokenbuf[1] == 'a' || tokenbuf[1] == 'b') | |
1491 | && !tokenbuf[2]) | |
bbce6d69 | 1492 | { |
a863c7d1 MB |
1493 | for (d = in_eval ? oldoldbufptr : linestart; |
1494 | d < bufend && *d != '\n'; | |
1495 | d++) | |
1496 | { | |
1497 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1498 | croak("Can't use \"my %s\" in sort comparison", | |
1499 | tokenbuf); | |
1500 | } | |
bbce6d69 | 1501 | } |
1502 | } | |
bbce6d69 | 1503 | |
a863c7d1 MB |
1504 | yylval.opval = newOP(OP_PADANY, 0); |
1505 | yylval.opval->op_targ = tmp; | |
1506 | return PRIVATEREF; | |
1507 | } | |
bbce6d69 | 1508 | } |
1509 | ||
02aa26ce NT |
1510 | /* |
1511 | Whine if they've said @foo in a doublequoted string, | |
1512 | and @foo isn't a variable we can find in the symbol | |
1513 | table. | |
1514 | */ | |
bbce6d69 | 1515 | if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) { |
1516 | GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV); | |
46fc3d4c | 1517 | if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
1518 | yyerror(form("In string, %s now must be written as \\%s", | |
1519 | tokenbuf, tokenbuf)); | |
bbce6d69 | 1520 | } |
1521 | ||
02aa26ce | 1522 | /* build ops for a bareword */ |
bbce6d69 | 1523 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0)); |
1524 | yylval.opval->op_private = OPpCONST_ENTERED; | |
93233ece | 1525 | gv_fetchpv(tokenbuf+1, in_eval ? (GV_ADDMULTI | 8) : TRUE, |
bbce6d69 | 1526 | ((tokenbuf[0] == '$') ? SVt_PV |
1527 | : (tokenbuf[0] == '@') ? SVt_PVAV | |
1528 | : SVt_PVHV)); | |
1529 | return WORD; | |
1530 | } | |
1531 | ||
02aa26ce NT |
1532 | /* no identifier pending identification */ |
1533 | ||
79072805 LW |
1534 | switch (lex_state) { |
1535 | #ifdef COMMENTARY | |
1536 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1537 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1538 | break; | |
1539 | #endif | |
1540 | ||
02aa26ce | 1541 | /* when we're already built the next token, just pull it out the queue */ |
79072805 LW |
1542 | case LEX_KNOWNEXT: |
1543 | nexttoke--; | |
1544 | yylval = nextval[nexttoke]; | |
463ee0b2 | 1545 | if (!nexttoke) { |
79072805 | 1546 | lex_state = lex_defer; |
463ee0b2 | 1547 | expect = lex_expect; |
a0d0e21e | 1548 | lex_defer = LEX_NORMAL; |
463ee0b2 | 1549 | } |
79072805 LW |
1550 | return(nexttype[nexttoke]); |
1551 | ||
02aa26ce NT |
1552 | /* interpolated case modifiers like \L \U, including \Q and \E. |
1553 | when we get here, bufptr is at the \ | |
1554 | */ | |
79072805 LW |
1555 | case LEX_INTERPCASEMOD: |
1556 | #ifdef DEBUGGING | |
1557 | if (bufptr != bufend && *bufptr != '\\') | |
463ee0b2 | 1558 | croak("panic: INTERPCASEMOD"); |
79072805 | 1559 | #endif |
02aa26ce NT |
1560 | /* handle \E or end of string */ |
1561 | if (bufptr == bufend || bufptr[1] == 'E') { | |
a0d0e21e | 1562 | char oldmod; |
02aa26ce NT |
1563 | |
1564 | /* if at a \E */ | |
79072805 | 1565 | if (lex_casemods) { |
a0d0e21e LW |
1566 | oldmod = lex_casestack[--lex_casemods]; |
1567 | lex_casestack[lex_casemods] = '\0'; | |
02aa26ce | 1568 | |
a0d0e21e LW |
1569 | if (bufptr != bufend && strchr("LUQ", oldmod)) { |
1570 | bufptr += 2; | |
1571 | lex_state = LEX_INTERPCONCAT; | |
1572 | } | |
79072805 LW |
1573 | return ')'; |
1574 | } | |
a0d0e21e LW |
1575 | if (bufptr != bufend) |
1576 | bufptr += 2; | |
1577 | lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1578 | return yylex(); |
1579 | } | |
1580 | else { | |
1581 | s = bufptr + 1; | |
1582 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
1583 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e LW |
1584 | if (strchr("LU", *s) && |
1585 | (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U'))) | |
1586 | { | |
1587 | lex_casestack[--lex_casemods] = '\0'; | |
1588 | return ')'; | |
1589 | } | |
1590 | if (lex_casemods > 10) { | |
89bfa8cd | 1591 | char* newlb = Renew(lex_casestack, lex_casemods + 2, char); |
a0d0e21e LW |
1592 | if (newlb != lex_casestack) { |
1593 | SAVEFREEPV(newlb); | |
1594 | lex_casestack = newlb; | |
1595 | } | |
1596 | } | |
1597 | lex_casestack[lex_casemods++] = *s; | |
1598 | lex_casestack[lex_casemods] = '\0'; | |
79072805 LW |
1599 | lex_state = LEX_INTERPCONCAT; |
1600 | nextval[nexttoke].ival = 0; | |
1601 | force_next('('); | |
1602 | if (*s == 'l') | |
1603 | nextval[nexttoke].ival = OP_LCFIRST; | |
1604 | else if (*s == 'u') | |
1605 | nextval[nexttoke].ival = OP_UCFIRST; | |
1606 | else if (*s == 'L') | |
1607 | nextval[nexttoke].ival = OP_LC; | |
1608 | else if (*s == 'U') | |
1609 | nextval[nexttoke].ival = OP_UC; | |
a0d0e21e LW |
1610 | else if (*s == 'Q') |
1611 | nextval[nexttoke].ival = OP_QUOTEMETA; | |
79072805 | 1612 | else |
463ee0b2 | 1613 | croak("panic: yylex"); |
79072805 LW |
1614 | bufptr = s + 1; |
1615 | force_next(FUNC); | |
1616 | if (lex_starts) { | |
1617 | s = bufptr; | |
463ee0b2 | 1618 | lex_starts = 0; |
79072805 LW |
1619 | Aop(OP_CONCAT); |
1620 | } | |
1621 | else | |
1622 | return yylex(); | |
1623 | } | |
1624 | ||
55497cff | 1625 | case LEX_INTERPPUSH: |
1626 | return sublex_push(); | |
1627 | ||
79072805 LW |
1628 | case LEX_INTERPSTART: |
1629 | if (bufptr == bufend) | |
1630 | return sublex_done(); | |
1631 | expect = XTERM; | |
1632 | lex_dojoin = (*bufptr == '@'); | |
1633 | lex_state = LEX_INTERPNORMAL; | |
1634 | if (lex_dojoin) { | |
1635 | nextval[nexttoke].ival = 0; | |
1636 | force_next(','); | |
554b3eca | 1637 | #ifdef USE_THREADS |
2faa37cc | 1638 | nextval[nexttoke].opval = newOP(OP_THREADSV, 0); |
54b9620d | 1639 | nextval[nexttoke].opval->op_targ = find_threadsv("\""); |
554b3eca MB |
1640 | force_next(PRIVATEREF); |
1641 | #else | |
a0d0e21e | 1642 | force_ident("\"", '$'); |
554b3eca | 1643 | #endif /* USE_THREADS */ |
79072805 LW |
1644 | nextval[nexttoke].ival = 0; |
1645 | force_next('$'); | |
1646 | nextval[nexttoke].ival = 0; | |
1647 | force_next('('); | |
1648 | nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ | |
1649 | force_next(FUNC); | |
1650 | } | |
1651 | if (lex_starts++) { | |
1652 | s = bufptr; | |
1653 | Aop(OP_CONCAT); | |
1654 | } | |
68dc0745 | 1655 | return yylex(); |
79072805 LW |
1656 | |
1657 | case LEX_INTERPENDMAYBE: | |
1658 | if (intuit_more(bufptr)) { | |
1659 | lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
1660 | break; | |
1661 | } | |
1662 | /* FALL THROUGH */ | |
1663 | ||
1664 | case LEX_INTERPEND: | |
1665 | if (lex_dojoin) { | |
1666 | lex_dojoin = FALSE; | |
1667 | lex_state = LEX_INTERPCONCAT; | |
1668 | return ')'; | |
1669 | } | |
1670 | /* FALLTHROUGH */ | |
1671 | case LEX_INTERPCONCAT: | |
1672 | #ifdef DEBUGGING | |
1673 | if (lex_brackets) | |
463ee0b2 | 1674 | croak("panic: INTERPCONCAT"); |
79072805 LW |
1675 | #endif |
1676 | if (bufptr == bufend) | |
1677 | return sublex_done(); | |
1678 | ||
ed6116ce | 1679 | if (SvIVX(linestr) == '\'') { |
79072805 LW |
1680 | SV *sv = newSVsv(linestr); |
1681 | if (!lex_inpat) | |
76e3520e | 1682 | sv = tokeq(sv); |
b3ac6de7 IZ |
1683 | else if ( hints & HINT_NEW_RE ) |
1684 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); | |
79072805 LW |
1685 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
1686 | s = bufend; | |
1687 | } | |
1688 | else { | |
1689 | s = scan_const(bufptr); | |
1690 | if (*s == '\\') | |
1691 | lex_state = LEX_INTERPCASEMOD; | |
1692 | else | |
1693 | lex_state = LEX_INTERPSTART; | |
1694 | } | |
1695 | ||
1696 | if (s != bufptr) { | |
1697 | nextval[nexttoke] = yylval; | |
463ee0b2 | 1698 | expect = XTERM; |
79072805 LW |
1699 | force_next(THING); |
1700 | if (lex_starts++) | |
1701 | Aop(OP_CONCAT); | |
1702 | else { | |
1703 | bufptr = s; | |
1704 | return yylex(); | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | return yylex(); | |
a0d0e21e LW |
1709 | case LEX_FORMLINE: |
1710 | lex_state = LEX_NORMAL; | |
1711 | s = scan_formline(bufptr); | |
1712 | if (!lex_formbrack) | |
1713 | goto rightbracket; | |
1714 | OPERATOR(';'); | |
79072805 LW |
1715 | } |
1716 | ||
1717 | s = bufptr; | |
a687059c LW |
1718 | oldoldbufptr = oldbufptr; |
1719 | oldbufptr = s; | |
79072805 | 1720 | DEBUG_p( { |
760ac839 | 1721 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s); |
79072805 | 1722 | } ) |
463ee0b2 LW |
1723 | |
1724 | retry: | |
378cc40b LW |
1725 | switch (*s) { |
1726 | default: | |
54310121 | 1727 | croak("Unrecognized character \\%03o", *s & 255); |
e929a76b LW |
1728 | case 4: |
1729 | case 26: | |
1730 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1731 | case 0: |
463ee0b2 | 1732 | if (!rsfp) { |
55497cff | 1733 | last_uni = 0; |
1734 | last_lop = 0; | |
463ee0b2 LW |
1735 | if (lex_brackets) |
1736 | yyerror("Missing right bracket"); | |
79072805 | 1737 | TOKEN(0); |
463ee0b2 | 1738 | } |
a687059c LW |
1739 | if (s++ < bufend) |
1740 | goto retry; /* ignore stray nulls */ | |
2f3197b3 | 1741 | last_uni = 0; |
79072805 | 1742 | last_lop = 0; |
a0d0e21e | 1743 | if (!in_eval && !preambled) { |
79072805 | 1744 | preambled = TRUE; |
a0d0e21e | 1745 | sv_setpv(linestr,incl_perldb()); |
91b7def8 | 1746 | if (SvCUR(linestr)) |
1747 | sv_catpv(linestr,";"); | |
1748 | if (preambleav){ | |
93965878 | 1749 | while(AvFILLp(preambleav) >= 0) { |
91b7def8 | 1750 | SV *tmpsv = av_shift(preambleav); |
1751 | sv_catsv(linestr, tmpsv); | |
1752 | sv_catpv(linestr, ";"); | |
1753 | sv_free(tmpsv); | |
1754 | } | |
1755 | sv_free((SV*)preambleav); | |
1756 | preambleav = NULL; | |
1757 | } | |
79072805 LW |
1758 | if (minus_n || minus_p) { |
1759 | sv_catpv(linestr, "LINE: while (<>) {"); | |
1760 | if (minus_l) | |
a0d0e21e | 1761 | sv_catpv(linestr,"chomp;"); |
8fd239a7 CS |
1762 | if (minus_a) { |
1763 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); | |
1764 | if (gv) | |
1765 | GvIMPORTED_AV_on(gv); | |
1766 | if (minus_F) { | |
54310121 | 1767 | if (strchr("/'\"", *splitstr) |
1768 | && strchr(splitstr + 1, *splitstr)) | |
46fc3d4c | 1769 | sv_catpvf(linestr, "@F=split(%s);", splitstr); |
54310121 | 1770 | else { |
1771 | char delim; | |
1772 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
1773 | while (s[1] && strchr(splitstr, *s)) s++; | |
1774 | delim = *s; | |
46fc3d4c | 1775 | sv_catpvf(linestr, "@F=split(%s%c", |
1776 | "q" + (delim == '\''), delim); | |
1777 | for (s = splitstr; *s; s++) { | |
54310121 | 1778 | if (*s == '\\') |
46fc3d4c | 1779 | sv_catpvn(linestr, "\\", 1); |
1780 | sv_catpvn(linestr, s, 1); | |
54310121 | 1781 | } |
46fc3d4c | 1782 | sv_catpvf(linestr, "%c);", delim); |
54310121 | 1783 | } |
2304df62 AD |
1784 | } |
1785 | else | |
1786 | sv_catpv(linestr,"@F=split(' ');"); | |
1787 | } | |
79072805 | 1788 | } |
a0d0e21e | 1789 | sv_catpv(linestr, "\n"); |
fd049845 | 1790 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
463ee0b2 | 1791 | bufend = SvPVX(linestr) + SvCUR(linestr); |
84902520 | 1792 | if (PERLDB_LINE && curstash != debstash) { |
a0d0e21e LW |
1793 | SV *sv = NEWSV(85,0); |
1794 | ||
1795 | sv_upgrade(sv, SVt_PVMG); | |
1796 | sv_setsv(sv,linestr); | |
1797 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); | |
1798 | } | |
79072805 | 1799 | goto retry; |
a687059c | 1800 | } |
e929a76b | 1801 | do { |
fd049845 | 1802 | if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) { |
e929a76b | 1803 | fake_eof: |
395c3793 | 1804 | if (rsfp) { |
a0d0e21e | 1805 | if (preprocess && !in_eval) |
6ad3d225 | 1806 | (void)PerlProc_pclose(rsfp); |
760ac839 LW |
1807 | else if ((PerlIO *)rsfp == PerlIO_stdin()) |
1808 | PerlIO_clearerr(rsfp); | |
395c3793 | 1809 | else |
760ac839 | 1810 | (void)PerlIO_close(rsfp); |
395c3793 LW |
1811 | rsfp = Nullfp; |
1812 | } | |
a0d0e21e | 1813 | if (!in_eval && (minus_n || minus_p)) { |
79072805 LW |
1814 | sv_setpv(linestr,minus_p ? ";}continue{print" : ""); |
1815 | sv_catpv(linestr,";}"); | |
fd049845 | 1816 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
463ee0b2 | 1817 | bufend = SvPVX(linestr) + SvCUR(linestr); |
e929a76b LW |
1818 | minus_n = minus_p = 0; |
1819 | goto retry; | |
1820 | } | |
fd049845 | 1821 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
79072805 LW |
1822 | sv_setpv(linestr,""); |
1823 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
378cc40b | 1824 | } |
a0d0e21e LW |
1825 | if (doextract) { |
1826 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) | |
1827 | doextract = FALSE; | |
1828 | ||
1829 | /* Incest with pod. */ | |
1830 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
1831 | sv_setpv(linestr, ""); | |
fd049845 | 1832 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
a0d0e21e LW |
1833 | bufend = SvPVX(linestr) + SvCUR(linestr); |
1834 | doextract = FALSE; | |
1835 | } | |
1836 | } | |
463ee0b2 | 1837 | incline(s); |
e929a76b | 1838 | } while (doextract); |
fd049845 | 1839 | oldoldbufptr = oldbufptr = bufptr = linestart = s; |
84902520 | 1840 | if (PERLDB_LINE && curstash != debstash) { |
79072805 | 1841 | SV *sv = NEWSV(85,0); |
a687059c | 1842 | |
93a17b20 | 1843 | sv_upgrade(sv, SVt_PVMG); |
79072805 LW |
1844 | sv_setsv(sv,linestr); |
1845 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); | |
a687059c | 1846 | } |
463ee0b2 | 1847 | bufend = SvPVX(linestr) + SvCUR(linestr); |
79072805 LW |
1848 | if (curcop->cop_line == 1) { |
1849 | while (s < bufend && isSPACE(*s)) | |
1850 | s++; | |
a0d0e21e | 1851 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 1852 | s++; |
44a8e56a | 1853 | d = Nullch; |
1854 | if (!in_eval) { | |
1855 | if (*s == '#' && *(s+1) == '!') | |
1856 | d = s + 2; | |
1857 | #ifdef ALTERNATE_SHEBANG | |
1858 | else { | |
1859 | static char as[] = ALTERNATE_SHEBANG; | |
1860 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
1861 | d = s + (sizeof(as) - 1); | |
1862 | } | |
1863 | #endif /* ALTERNATE_SHEBANG */ | |
1864 | } | |
1865 | if (d) { | |
b8378b72 | 1866 | char *ipath; |
774d564b | 1867 | char *ipathend; |
b8378b72 | 1868 | |
774d564b | 1869 | while (isSPACE(*d)) |
b8378b72 CS |
1870 | d++; |
1871 | ipath = d; | |
774d564b | 1872 | while (*d && !isSPACE(*d)) |
1873 | d++; | |
1874 | ipathend = d; | |
1875 | ||
1876 | #ifdef ARG_ZERO_IS_SCRIPT | |
1877 | if (ipathend > ipath) { | |
1878 | /* | |
1879 | * HP-UX (at least) sets argv[0] to the script name, | |
1880 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
1881 | * at least, set argv[0] to the basename of the Perl | |
1882 | * interpreter. So, having found "#!", we'll set it right. | |
1883 | */ | |
1884 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
1885 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
9607fc9c | 1886 | if (sv_eq(x, GvSV(curcop->cop_filegv))) { |
774d564b | 1887 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 1888 | SvSETMAGIC(x); |
1889 | } | |
774d564b | 1890 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 1891 | } |
774d564b | 1892 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
1893 | |
1894 | /* | |
1895 | * Look for options. | |
1896 | */ | |
748a9306 LW |
1897 | d = instr(s,"perl -"); |
1898 | if (!d) | |
1899 | d = instr(s,"perl"); | |
44a8e56a | 1900 | #ifdef ALTERNATE_SHEBANG |
1901 | /* | |
1902 | * If the ALTERNATE_SHEBANG on this system starts with a | |
1903 | * character that can be part of a Perl expression, then if | |
1904 | * we see it but not "perl", we're probably looking at the | |
1905 | * start of Perl code, not a request to hand off to some | |
1906 | * other interpreter. Similarly, if "perl" is there, but | |
1907 | * not in the first 'word' of the line, we assume the line | |
1908 | * contains the start of the Perl program. | |
44a8e56a | 1909 | */ |
1910 | if (d && *s != '#') { | |
774d564b | 1911 | char *c = ipath; |
44a8e56a | 1912 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
1913 | c++; | |
1914 | if (c < d) | |
1915 | d = Nullch; /* "perl" not in first word; ignore */ | |
1916 | else | |
1917 | *s = '#'; /* Don't try to parse shebang line */ | |
1918 | } | |
774d564b | 1919 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 1920 | if (!d && |
44a8e56a | 1921 | *s == '#' && |
774d564b | 1922 | ipathend > ipath && |
748a9306 LW |
1923 | !minus_c && |
1924 | !instr(s,"indir") && | |
1925 | instr(origargv[0],"perl")) | |
1926 | { | |
9f68db38 | 1927 | char **newargv; |
9f68db38 | 1928 | |
774d564b | 1929 | *ipathend = '\0'; |
1930 | s = ipathend + 1; | |
de3bb511 | 1931 | while (s < bufend && isSPACE(*s)) |
9f68db38 LW |
1932 | s++; |
1933 | if (s < bufend) { | |
1934 | Newz(899,newargv,origargc+3,char*); | |
1935 | newargv[1] = s; | |
de3bb511 | 1936 | while (s < bufend && !isSPACE(*s)) |
9f68db38 LW |
1937 | s++; |
1938 | *s = '\0'; | |
1939 | Copy(origargv+1, newargv+2, origargc+1, char*); | |
1940 | } | |
1941 | else | |
1942 | newargv = origargv; | |
774d564b | 1943 | newargv[0] = ipath; |
1944 | execv(ipath, newargv); | |
1945 | croak("Can't exec %s", ipath); | |
9f68db38 | 1946 | } |
748a9306 | 1947 | if (d) { |
ba6d6ac9 CS |
1948 | U32 oldpdb = perldb; |
1949 | bool oldn = minus_n; | |
1950 | bool oldp = minus_p; | |
748a9306 LW |
1951 | |
1952 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 1953 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
1954 | |
1955 | if (*d++ == '-') { | |
8cc95fdb | 1956 | do { |
1957 | if (*d == 'M' || *d == 'm') { | |
1958 | char *m = d; | |
1959 | while (*d && !isSPACE(*d)) d++; | |
1960 | croak("Too late for \"-%.*s\" option", | |
1961 | (int)(d - m), m); | |
1962 | } | |
1963 | d = moreswitches(d); | |
1964 | } while (d); | |
84902520 | 1965 | if (PERLDB_LINE && !oldpdb || |
b084f20b | 1966 | ( minus_n || minus_p ) && !(oldn || oldp) ) |
1967 | /* if we have already added "LINE: while (<>) {", | |
1968 | we must not do it again */ | |
748a9306 LW |
1969 | { |
1970 | sv_setpv(linestr, ""); | |
fd049845 | 1971 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
748a9306 LW |
1972 | bufend = SvPVX(linestr) + SvCUR(linestr); |
1973 | preambled = FALSE; | |
84902520 | 1974 | if (PERLDB_LINE) |
748a9306 LW |
1975 | (void)gv_fetchfile(origfilename); |
1976 | goto retry; | |
1977 | } | |
a0d0e21e | 1978 | } |
79072805 | 1979 | } |
9f68db38 | 1980 | } |
79072805 | 1981 | } |
85e6fe83 | 1982 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
a0d0e21e LW |
1983 | bufptr = s; |
1984 | lex_state = LEX_FORMLINE; | |
1985 | return yylex(); | |
ae986130 | 1986 | } |
378cc40b | 1987 | goto retry; |
4fdae800 | 1988 | case '\r': |
a868473f | 1989 | #ifndef WIN32CHEAT |
54310121 | 1990 | warn("Illegal character \\%03o (carriage return)", '\r'); |
1991 | croak( | |
1992 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 1993 | #endif |
4fdae800 | 1994 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
1995 | s++; |
1996 | goto retry; | |
378cc40b | 1997 | case '#': |
e929a76b | 1998 | case '\n': |
79072805 | 1999 | if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) { |
a687059c LW |
2000 | d = bufend; |
2001 | while (s < d && *s != '\n') | |
378cc40b | 2002 | s++; |
0f85fab0 | 2003 | if (s < d) |
378cc40b | 2004 | s++; |
463ee0b2 | 2005 | incline(s); |
85e6fe83 | 2006 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
a0d0e21e LW |
2007 | bufptr = s; |
2008 | lex_state = LEX_FORMLINE; | |
2009 | return yylex(); | |
a687059c | 2010 | } |
378cc40b | 2011 | } |
a687059c | 2012 | else { |
378cc40b | 2013 | *s = '\0'; |
a687059c LW |
2014 | bufend = s; |
2015 | } | |
378cc40b LW |
2016 | goto retry; |
2017 | case '-': | |
79072805 | 2018 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2019 | s++; |
748a9306 LW |
2020 | bufptr = s; |
2021 | tmp = *s++; | |
2022 | ||
2023 | while (s < bufend && (*s == ' ' || *s == '\t')) | |
2024 | s++; | |
2025 | ||
2026 | if (strnEQ(s,"=>",2)) { | |
748a9306 LW |
2027 | s = force_word(bufptr,WORD,FALSE,FALSE,FALSE); |
2028 | OPERATOR('-'); /* unary minus */ | |
2029 | } | |
e334a159 | 2030 | last_uni = oldbufptr; |
a0d0e21e | 2031 | last_lop_op = OP_FTEREAD; /* good enough */ |
748a9306 | 2032 | switch (tmp) { |
79072805 LW |
2033 | case 'r': FTST(OP_FTEREAD); |
2034 | case 'w': FTST(OP_FTEWRITE); | |
2035 | case 'x': FTST(OP_FTEEXEC); | |
2036 | case 'o': FTST(OP_FTEOWNED); | |
2037 | case 'R': FTST(OP_FTRREAD); | |
2038 | case 'W': FTST(OP_FTRWRITE); | |
2039 | case 'X': FTST(OP_FTREXEC); | |
2040 | case 'O': FTST(OP_FTROWNED); | |
2041 | case 'e': FTST(OP_FTIS); | |
2042 | case 'z': FTST(OP_FTZERO); | |
2043 | case 's': FTST(OP_FTSIZE); | |
2044 | case 'f': FTST(OP_FTFILE); | |
2045 | case 'd': FTST(OP_FTDIR); | |
2046 | case 'l': FTST(OP_FTLINK); | |
2047 | case 'p': FTST(OP_FTPIPE); | |
2048 | case 'S': FTST(OP_FTSOCK); | |
2049 | case 'u': FTST(OP_FTSUID); | |
2050 | case 'g': FTST(OP_FTSGID); | |
2051 | case 'k': FTST(OP_FTSVTX); | |
2052 | case 'b': FTST(OP_FTBLK); | |
2053 | case 'c': FTST(OP_FTCHR); | |
2054 | case 't': FTST(OP_FTTTY); | |
2055 | case 'T': FTST(OP_FTTEXT); | |
2056 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2057 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2058 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2059 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2060 | default: |
ff0cee69 | 2061 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2062 | break; |
2063 | } | |
2064 | } | |
a687059c LW |
2065 | tmp = *s++; |
2066 | if (*s == tmp) { | |
2067 | s++; | |
79072805 LW |
2068 | if (expect == XOPERATOR) |
2069 | TERM(POSTDEC); | |
2070 | else | |
2071 | OPERATOR(PREDEC); | |
2072 | } | |
2073 | else if (*s == '>') { | |
2074 | s++; | |
2075 | s = skipspace(s); | |
2076 | if (isIDFIRST(*s)) { | |
a0d0e21e | 2077 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2078 | TOKEN(ARROW); |
79072805 | 2079 | } |
748a9306 LW |
2080 | else if (*s == '$') |
2081 | OPERATOR(ARROW); | |
463ee0b2 | 2082 | else |
748a9306 | 2083 | TERM(ARROW); |
a687059c | 2084 | } |
79072805 LW |
2085 | if (expect == XOPERATOR) |
2086 | Aop(OP_SUBTRACT); | |
2087 | else { | |
2f3197b3 LW |
2088 | if (isSPACE(*s) || !isSPACE(*bufptr)) |
2089 | check_uni(); | |
79072805 | 2090 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2091 | } |
79072805 | 2092 | |
378cc40b | 2093 | case '+': |
a687059c LW |
2094 | tmp = *s++; |
2095 | if (*s == tmp) { | |
378cc40b | 2096 | s++; |
79072805 LW |
2097 | if (expect == XOPERATOR) |
2098 | TERM(POSTINC); | |
2099 | else | |
2100 | OPERATOR(PREINC); | |
378cc40b | 2101 | } |
79072805 LW |
2102 | if (expect == XOPERATOR) |
2103 | Aop(OP_ADD); | |
2104 | else { | |
2f3197b3 LW |
2105 | if (isSPACE(*s) || !isSPACE(*bufptr)) |
2106 | check_uni(); | |
a687059c | 2107 | OPERATOR('+'); |
2f3197b3 | 2108 | } |
a687059c | 2109 | |
378cc40b | 2110 | case '*': |
79072805 | 2111 | if (expect != XOPERATOR) { |
8903cb82 | 2112 | s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE); |
463ee0b2 | 2113 | expect = XOPERATOR; |
a0d0e21e LW |
2114 | force_ident(tokenbuf, '*'); |
2115 | if (!*tokenbuf) | |
2116 | PREREF('*'); | |
79072805 | 2117 | TERM('*'); |
a687059c | 2118 | } |
79072805 LW |
2119 | s++; |
2120 | if (*s == '*') { | |
a687059c | 2121 | s++; |
79072805 | 2122 | PWop(OP_POW); |
a687059c | 2123 | } |
79072805 LW |
2124 | Mop(OP_MULTIPLY); |
2125 | ||
378cc40b | 2126 | case '%': |
bbce6d69 | 2127 | if (expect == XOPERATOR) { |
2128 | ++s; | |
2129 | Mop(OP_MODULO); | |
a687059c | 2130 | } |
bbce6d69 | 2131 | tokenbuf[0] = '%'; |
8903cb82 | 2132 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE); |
bbce6d69 | 2133 | if (!tokenbuf[1]) { |
2134 | if (s == bufend) | |
2135 | yyerror("Final % should be \\% or %name"); | |
2136 | PREREF('%'); | |
a687059c | 2137 | } |
bbce6d69 | 2138 | pending_ident = '%'; |
2139 | TERM('%'); | |
a687059c | 2140 | |
378cc40b | 2141 | case '^': |
79072805 | 2142 | s++; |
a0d0e21e | 2143 | BOop(OP_BIT_XOR); |
79072805 LW |
2144 | case '[': |
2145 | lex_brackets++; | |
2146 | /* FALL THROUGH */ | |
378cc40b | 2147 | case '~': |
378cc40b | 2148 | case ',': |
378cc40b LW |
2149 | tmp = *s++; |
2150 | OPERATOR(tmp); | |
a0d0e21e LW |
2151 | case ':': |
2152 | if (s[1] == ':') { | |
2153 | len = 0; | |
2154 | goto just_a_word; | |
2155 | } | |
2156 | s++; | |
2157 | OPERATOR(':'); | |
8990e307 LW |
2158 | case '(': |
2159 | s++; | |
a0d0e21e | 2160 | if (last_lop == oldoldbufptr || last_uni == oldoldbufptr) |
8990e307 | 2161 | oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */ |
a0d0e21e LW |
2162 | else |
2163 | expect = XTERM; | |
2164 | TOKEN('('); | |
378cc40b | 2165 | case ';': |
79072805 LW |
2166 | if (curcop->cop_line < copline) |
2167 | copline = curcop->cop_line; | |
378cc40b LW |
2168 | tmp = *s++; |
2169 | OPERATOR(tmp); | |
2170 | case ')': | |
378cc40b | 2171 | tmp = *s++; |
16d20bd9 AD |
2172 | s = skipspace(s); |
2173 | if (*s == '{') | |
2174 | PREBLOCK(tmp); | |
378cc40b | 2175 | TERM(tmp); |
79072805 LW |
2176 | case ']': |
2177 | s++; | |
463ee0b2 LW |
2178 | if (lex_brackets <= 0) |
2179 | yyerror("Unmatched right bracket"); | |
2180 | else | |
2181 | --lex_brackets; | |
79072805 | 2182 | if (lex_state == LEX_INTERPNORMAL) { |
463ee0b2 | 2183 | if (lex_brackets == 0) { |
a0d0e21e | 2184 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
79072805 LW |
2185 | lex_state = LEX_INTERPEND; |
2186 | } | |
2187 | } | |
4633a7c4 | 2188 | TERM(']'); |
79072805 LW |
2189 | case '{': |
2190 | leftbracket: | |
79072805 | 2191 | s++; |
8990e307 | 2192 | if (lex_brackets > 100) { |
89bfa8cd | 2193 | char* newlb = Renew(lex_brackstack, lex_brackets + 1, char); |
8990e307 LW |
2194 | if (newlb != lex_brackstack) { |
2195 | SAVEFREEPV(newlb); | |
2196 | lex_brackstack = newlb; | |
2197 | } | |
2198 | } | |
a0d0e21e LW |
2199 | switch (expect) { |
2200 | case XTERM: | |
2201 | if (lex_formbrack) { | |
2202 | s--; | |
2203 | PRETERMBLOCK(DO); | |
2204 | } | |
2205 | if (oldoldbufptr == last_lop) | |
2206 | lex_brackstack[lex_brackets++] = XTERM; | |
2207 | else | |
2208 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
79072805 | 2209 | OPERATOR(HASHBRACK); |
a0d0e21e | 2210 | case XOPERATOR: |
748a9306 LW |
2211 | while (s < bufend && (*s == ' ' || *s == '\t')) |
2212 | s++; | |
44a8e56a | 2213 | d = s; |
2214 | tokenbuf[0] = '\0'; | |
2215 | if (d < bufend && *d == '-') { | |
2216 | tokenbuf[0] = '-'; | |
2217 | d++; | |
2218 | while (d < bufend && (*d == ' ' || *d == '\t')) | |
2219 | d++; | |
2220 | } | |
2221 | if (d < bufend && isIDFIRST(*d)) { | |
8903cb82 | 2222 | d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1, |
2223 | FALSE, &len); | |
748a9306 LW |
2224 | while (d < bufend && (*d == ' ' || *d == '\t')) |
2225 | d++; | |
2226 | if (*d == '}') { | |
44a8e56a | 2227 | char minus = (tokenbuf[0] == '-'); |
44a8e56a | 2228 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2229 | if (minus) | |
2230 | force_next('-'); | |
748a9306 LW |
2231 | } |
2232 | } | |
2233 | /* FALL THROUGH */ | |
2234 | case XBLOCK: | |
a0d0e21e | 2235 | lex_brackstack[lex_brackets++] = XSTATE; |
2304df62 | 2236 | expect = XSTATE; |
a0d0e21e LW |
2237 | break; |
2238 | case XTERMBLOCK: | |
2239 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
2240 | expect = XSTATE; | |
2241 | break; | |
2242 | default: { | |
2243 | char *t; | |
2244 | if (oldoldbufptr == last_lop) | |
2245 | lex_brackstack[lex_brackets++] = XTERM; | |
2246 | else | |
2247 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
2248 | s = skipspace(s); | |
09ecc4b6 | 2249 | if (*s == '}') |
a0d0e21e | 2250 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2251 | /* This hack serves to disambiguate a pair of curlies |
2252 | * as being a block or an anon hash. Normally, expectation | |
2253 | * determines that, but in cases where we're not in a | |
2254 | * position to expect anything in particular (like inside | |
2255 | * eval"") we have to resolve the ambiguity. This code | |
2256 | * covers the case where the first term in the curlies is a | |
2257 | * quoted string. Most other cases need to be explicitly | |
2258 | * disambiguated by prepending a `+' before the opening | |
2259 | * curly in order to force resolution as an anon hash. | |
2260 | * | |
2261 | * XXX should probably propagate the outer expectation | |
2262 | * into eval"" to rely less on this hack, but that could | |
2263 | * potentially break current behavior of eval"". | |
2264 | * GSAR 97-07-21 | |
2265 | */ | |
2266 | t = s; | |
2267 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2268 | /* common case: get past first string, handling escapes */ | |
2269 | for (t++; t < bufend && *t != *s;) | |
2270 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) | |
2271 | t++; | |
2272 | t++; | |
a0d0e21e | 2273 | } |
b8a4b1be GS |
2274 | else if (*s == 'q') { |
2275 | if (++t < bufend | |
2276 | && (!isALNUM(*t) | |
2277 | || ((*t == 'q' || *t == 'x') && ++t < bufend | |
2278 | && !isALNUM(*t)))) { | |
2279 | char *tmps; | |
2280 | char open, close, term; | |
2281 | I32 brackets = 1; | |
2282 | ||
2283 | while (t < bufend && isSPACE(*t)) | |
2284 | t++; | |
2285 | term = *t; | |
2286 | open = term; | |
2287 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2288 | term = tmps[5]; | |
2289 | close = term; | |
2290 | if (open == close) | |
2291 | for (t++; t < bufend; t++) { | |
6d07e5e9 | 2292 | if (*t == '\\' && t+1 < bufend && open != '\\') |
b8a4b1be | 2293 | t++; |
6d07e5e9 | 2294 | else if (*t == open) |
b8a4b1be GS |
2295 | break; |
2296 | } | |
2297 | else | |
2298 | for (t++; t < bufend; t++) { | |
6d07e5e9 | 2299 | if (*t == '\\' && t+1 < bufend) |
b8a4b1be | 2300 | t++; |
6d07e5e9 | 2301 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2302 | break; |
2303 | else if (*t == open) | |
2304 | brackets++; | |
2305 | } | |
2306 | } | |
2307 | t++; | |
a0d0e21e | 2308 | } |
b8a4b1be GS |
2309 | else if (isALPHA(*s)) { |
2310 | for (t++; t < bufend && isALNUM(*t); t++) ; | |
a0d0e21e | 2311 | } |
a0d0e21e LW |
2312 | while (t < bufend && isSPACE(*t)) |
2313 | t++; | |
b8a4b1be GS |
2314 | /* if comma follows first term, call it an anon hash */ |
2315 | /* XXX it could be a comma expression with loop modifiers */ | |
2316 | if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) | |
2317 | || (*t == '=' && t[1] == '>'))) | |
a0d0e21e LW |
2318 | OPERATOR(HASHBRACK); |
2319 | if (expect == XREF) | |
2320 | expect = XTERM; | |
2321 | else { | |
2322 | lex_brackstack[lex_brackets-1] = XSTATE; | |
2323 | expect = XSTATE; | |
2324 | } | |
8990e307 | 2325 | } |
a0d0e21e | 2326 | break; |
463ee0b2 | 2327 | } |
79072805 LW |
2328 | yylval.ival = curcop->cop_line; |
2329 | if (isSPACE(*s) || *s == '#') | |
2330 | copline = NOLINE; /* invalidate current command line number */ | |
79072805 | 2331 | TOKEN('{'); |
378cc40b | 2332 | case '}': |
79072805 LW |
2333 | rightbracket: |
2334 | s++; | |
463ee0b2 LW |
2335 | if (lex_brackets <= 0) |
2336 | yyerror("Unmatched right bracket"); | |
2337 | else | |
2338 | expect = (expectation)lex_brackstack[--lex_brackets]; | |
85e6fe83 LW |
2339 | if (lex_brackets < lex_formbrack) |
2340 | lex_formbrack = 0; | |
79072805 | 2341 | if (lex_state == LEX_INTERPNORMAL) { |
463ee0b2 | 2342 | if (lex_brackets == 0) { |
79072805 LW |
2343 | if (lex_fakebrack) { |
2344 | lex_state = LEX_INTERPEND; | |
2345 | bufptr = s; | |
2346 | return yylex(); /* ignore fake brackets */ | |
2347 | } | |
fa83b5b6 | 2348 | if (*s == '-' && s[1] == '>') |
2349 | lex_state = LEX_INTERPENDMAYBE; | |
2350 | else if (*s != '[' && *s != '{') | |
79072805 LW |
2351 | lex_state = LEX_INTERPEND; |
2352 | } | |
2353 | } | |
748a9306 LW |
2354 | if (lex_brackets < lex_fakebrack) { |
2355 | bufptr = s; | |
2356 | lex_fakebrack = 0; | |
2357 | return yylex(); /* ignore fake brackets */ | |
2358 | } | |
79072805 LW |
2359 | force_next('}'); |
2360 | TOKEN(';'); | |
378cc40b LW |
2361 | case '&': |
2362 | s++; | |
2363 | tmp = *s++; | |
2364 | if (tmp == '&') | |
a0d0e21e | 2365 | AOPERATOR(ANDAND); |
378cc40b | 2366 | s--; |
463ee0b2 | 2367 | if (expect == XOPERATOR) { |
fd049845 | 2368 | if (dowarn && isALPHA(*s) && bufptr == linestart) { |
463ee0b2 LW |
2369 | curcop->cop_line--; |
2370 | warn(warn_nosemi); | |
2371 | curcop->cop_line++; | |
2372 | } | |
79072805 | 2373 | BAop(OP_BIT_AND); |
463ee0b2 | 2374 | } |
79072805 | 2375 | |
8903cb82 | 2376 | s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE); |
463ee0b2 LW |
2377 | if (*tokenbuf) { |
2378 | expect = XOPERATOR; | |
a0d0e21e | 2379 | force_ident(tokenbuf, '&'); |
463ee0b2 | 2380 | } |
79072805 LW |
2381 | else |
2382 | PREREF('&'); | |
c07a80fd | 2383 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2384 | TERM('&'); |
2385 | ||
378cc40b LW |
2386 | case '|': |
2387 | s++; | |
2388 | tmp = *s++; | |
2389 | if (tmp == '|') | |
a0d0e21e | 2390 | AOPERATOR(OROR); |
378cc40b | 2391 | s--; |
79072805 | 2392 | BOop(OP_BIT_OR); |
378cc40b LW |
2393 | case '=': |
2394 | s++; | |
2395 | tmp = *s++; | |
2396 | if (tmp == '=') | |
79072805 LW |
2397 | Eop(OP_EQ); |
2398 | if (tmp == '>') | |
2399 | OPERATOR(','); | |
378cc40b | 2400 | if (tmp == '~') |
79072805 | 2401 | PMop(OP_MATCH); |
463ee0b2 | 2402 | if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
ff0cee69 | 2403 | warn("Reversed %c= operator",(int)tmp); |
378cc40b | 2404 | s--; |
748a9306 | 2405 | if (expect == XSTATE && isALPHA(tmp) && |
fd049845 | 2406 | (s == linestart+1 || s[-2] == '\n') ) |
748a9306 | 2407 | { |
a5f75d66 AD |
2408 | if (in_eval && !rsfp) { |
2409 | d = bufend; | |
2410 | while (s < d) { | |
2411 | if (*s++ == '\n') { | |
2412 | incline(s); | |
2413 | if (strnEQ(s,"=cut",4)) { | |
2414 | s = strchr(s,'\n'); | |
2415 | if (s) | |
2416 | s++; | |
2417 | else | |
2418 | s = d; | |
2419 | incline(s); | |
2420 | goto retry; | |
2421 | } | |
2422 | } | |
2423 | } | |
2424 | goto retry; | |
2425 | } | |
a0d0e21e LW |
2426 | s = bufend; |
2427 | doextract = TRUE; | |
2428 | goto retry; | |
2429 | } | |
2430 | if (lex_brackets < lex_formbrack) { | |
2431 | char *t; | |
2432 | for (t = s; *t == ' ' || *t == '\t'; t++) ; | |
2433 | if (*t == '\n' || *t == '#') { | |
2434 | s--; | |
2435 | expect = XBLOCK; | |
2436 | goto leftbracket; | |
2437 | } | |
79072805 | 2438 | } |
a0d0e21e LW |
2439 | yylval.ival = 0; |
2440 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2441 | case '!': |
2442 | s++; | |
2443 | tmp = *s++; | |
2444 | if (tmp == '=') | |
79072805 | 2445 | Eop(OP_NE); |
378cc40b | 2446 | if (tmp == '~') |
79072805 | 2447 | PMop(OP_NOT); |
378cc40b LW |
2448 | s--; |
2449 | OPERATOR('!'); | |
2450 | case '<': | |
79072805 | 2451 | if (expect != XOPERATOR) { |
93a17b20 | 2452 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2453 | check_uni(); |
79072805 LW |
2454 | if (s[1] == '<') |
2455 | s = scan_heredoc(s); | |
2456 | else | |
2457 | s = scan_inputsymbol(s); | |
2458 | TERM(sublex_start()); | |
378cc40b LW |
2459 | } |
2460 | s++; | |
2461 | tmp = *s++; | |
2462 | if (tmp == '<') | |
79072805 | 2463 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2464 | if (tmp == '=') { |
2465 | tmp = *s++; | |
2466 | if (tmp == '>') | |
79072805 | 2467 | Eop(OP_NCMP); |
395c3793 | 2468 | s--; |
79072805 | 2469 | Rop(OP_LE); |
395c3793 | 2470 | } |
378cc40b | 2471 | s--; |
79072805 | 2472 | Rop(OP_LT); |
378cc40b LW |
2473 | case '>': |
2474 | s++; | |
2475 | tmp = *s++; | |
2476 | if (tmp == '>') | |
79072805 | 2477 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2478 | if (tmp == '=') |
79072805 | 2479 | Rop(OP_GE); |
378cc40b | 2480 | s--; |
79072805 | 2481 | Rop(OP_GT); |
378cc40b LW |
2482 | |
2483 | case '$': | |
bbce6d69 | 2484 | CLINE; |
2485 | ||
8990e307 | 2486 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2487 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2488 | expect = XTERM; | |
2489 | depcom(); | |
bbce6d69 | 2490 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2491 | } |
8990e307 | 2492 | } |
a0d0e21e | 2493 | |
bbce6d69 | 2494 | if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) { |
2495 | if (expect == XOPERATOR) | |
2496 | no_op("Array length", bufptr); | |
2497 | tokenbuf[0] = '@'; | |
8903cb82 | 2498 | s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1, |
2499 | FALSE); | |
bbce6d69 | 2500 | if (!tokenbuf[1]) |
a0d0e21e | 2501 | PREREF(DOLSHARP); |
463ee0b2 | 2502 | expect = XOPERATOR; |
bbce6d69 | 2503 | pending_ident = '#'; |
463ee0b2 | 2504 | TOKEN(DOLSHARP); |
79072805 | 2505 | } |
bbce6d69 | 2506 | |
2507 | if (expect == XOPERATOR) | |
2508 | no_op("Scalar", bufptr); | |
2509 | tokenbuf[0] = '$'; | |
8903cb82 | 2510 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE); |
bbce6d69 | 2511 | if (!tokenbuf[1]) { |
2512 | if (s == bufend) | |
2513 | yyerror("Final $ should be \\$ or $name"); | |
2514 | PREREF('$'); | |
8990e307 | 2515 | } |
a0d0e21e | 2516 | |
bbce6d69 | 2517 | /* This kludge not intended to be bulletproof. */ |
2518 | if (tokenbuf[1] == '[' && !tokenbuf[2]) { | |
2519 | yylval.opval = newSVOP(OP_CONST, 0, | |
2520 | newSViv((IV)compiling.cop_arybase)); | |
2521 | yylval.opval->op_private = OPpCONST_ARYBASE; | |
2522 | TERM(THING); | |
2523 | } | |
2524 | ||
ff68c719 | 2525 | d = s; |
2526 | if (lex_state == LEX_NORMAL) | |
2527 | s = skipspace(s); | |
2528 | ||
bbce6d69 | 2529 | if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) { |
2530 | char *t; | |
2531 | if (*s == '[') { | |
2532 | tokenbuf[0] = '@'; | |
2533 | if (dowarn) { | |
2534 | for(t = s + 1; | |
2535 | isSPACE(*t) || isALNUM(*t) || *t == '$'; | |
2536 | t++) ; | |
a0d0e21e LW |
2537 | if (*t++ == ',') { |
2538 | bufptr = skipspace(bufptr); | |
bbce6d69 | 2539 | while (t < bufend && *t != ']') |
2540 | t++; | |
a0d0e21e | 2541 | warn("Multidimensional syntax %.*s not supported", |
bbce6d69 | 2542 | (t - bufptr) + 1, bufptr); |
a0d0e21e LW |
2543 | } |
2544 | } | |
bbce6d69 | 2545 | } |
2546 | else if (*s == '{') { | |
2547 | tokenbuf[0] = '%'; | |
2548 | if (dowarn && strEQ(tokenbuf+1, "SIG") && | |
2549 | (t = strchr(s, '}')) && (t = strchr(t, '='))) | |
2550 | { | |
8903cb82 | 2551 | char tmpbuf[sizeof tokenbuf]; |
a0d0e21e LW |
2552 | STRLEN len; |
2553 | for (t++; isSPACE(*t); t++) ; | |
748a9306 | 2554 | if (isIDFIRST(*t)) { |
8903cb82 | 2555 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
748a9306 LW |
2556 | if (*t != '(' && perl_get_cv(tmpbuf, FALSE)) |
2557 | warn("You need to quote \"%s\"", tmpbuf); | |
2558 | } | |
93a17b20 LW |
2559 | } |
2560 | } | |
2f3197b3 | 2561 | } |
bbce6d69 | 2562 | |
2563 | expect = XOPERATOR; | |
ff68c719 | 2564 | if (lex_state == LEX_NORMAL && isSPACE(*d)) { |
bbce6d69 | 2565 | bool islop = (last_lop == oldoldbufptr); |
bbce6d69 | 2566 | if (!islop || last_lop_op == OP_GREPSTART) |
2567 | expect = XOPERATOR; | |
2568 | else if (strchr("$@\"'`q", *s)) | |
2569 | expect = XTERM; /* e.g. print $fh "foo" */ | |
2570 | else if (strchr("&*<%", *s) && isIDFIRST(s[1])) | |
2571 | expect = XTERM; /* e.g. print $fh &sub */ | |
68dc0745 | 2572 | else if (isIDFIRST(*s)) { |
8903cb82 | 2573 | char tmpbuf[sizeof tokenbuf]; |
2574 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
84902520 TB |
2575 | if (tmp = keyword(tmpbuf, len)) { |
2576 | /* binary operators exclude handle interpretations */ | |
2577 | switch (tmp) { | |
2578 | case -KEY_x: | |
2579 | case -KEY_eq: | |
2580 | case -KEY_ne: | |
2581 | case -KEY_gt: | |
2582 | case -KEY_lt: | |
2583 | case -KEY_ge: | |
2584 | case -KEY_le: | |
2585 | case -KEY_cmp: | |
2586 | break; | |
2587 | default: | |
2588 | expect = XTERM; /* e.g. print $fh length() */ | |
2589 | break; | |
2590 | } | |
2591 | } | |
68dc0745 | 2592 | else { |
2593 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2594 | if (gv && GvCVu(gv)) | |
2595 | expect = XTERM; /* e.g. print $fh subr() */ | |
93a17b20 | 2596 | } |
93a17b20 | 2597 | } |
bbce6d69 | 2598 | else if (isDIGIT(*s)) |
2599 | expect = XTERM; /* e.g. print $fh 3 */ | |
2600 | else if (*s == '.' && isDIGIT(s[1])) | |
2601 | expect = XTERM; /* e.g. print $fh .3 */ | |
2602 | else if (strchr("/?-+", *s) && !isSPACE(s[1])) | |
2603 | expect = XTERM; /* e.g. print $fh -1 */ | |
2604 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2])) | |
2605 | expect = XTERM; /* print $fh <<"EOF" */ | |
2606 | } | |
2607 | pending_ident = '$'; | |
79072805 | 2608 | TOKEN('$'); |
378cc40b LW |
2609 | |
2610 | case '@': | |
8990e307 | 2611 | if (expect == XOPERATOR) |
bbce6d69 | 2612 | no_op("Array", s); |
2613 | tokenbuf[0] = '@'; | |
8903cb82 | 2614 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE); |
bbce6d69 | 2615 | if (!tokenbuf[1]) { |
2616 | if (s == bufend) | |
2617 | yyerror("Final @ should be \\@ or @name"); | |
2618 | PREREF('@'); | |
2619 | } | |
ff68c719 | 2620 | if (lex_state == LEX_NORMAL) |
2621 | s = skipspace(s); | |
bbce6d69 | 2622 | if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) { |
2623 | if (*s == '{') | |
2624 | tokenbuf[0] = '%'; | |
a0d0e21e LW |
2625 | |
2626 | /* Warn about @ where they meant $. */ | |
2627 | if (dowarn) { | |
2628 | if (*s == '[' || *s == '{') { | |
2629 | char *t = s + 1; | |
2630 | while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t))) | |
2631 | t++; | |
2632 | if (*t == '}' || *t == ']') { | |
2633 | t++; | |
2634 | bufptr = skipspace(bufptr); | |
2635 | warn("Scalar value %.*s better written as $%.*s", | |
2636 | t-bufptr, bufptr, t-bufptr-1, bufptr+1); | |
2637 | } | |
93a17b20 LW |
2638 | } |
2639 | } | |
463ee0b2 | 2640 | } |
bbce6d69 | 2641 | pending_ident = '@'; |
79072805 | 2642 | TERM('@'); |
378cc40b LW |
2643 | |
2644 | case '/': /* may either be division or pattern */ | |
2645 | case '?': /* may either be conditional or pattern */ | |
79072805 | 2646 | if (expect != XOPERATOR) { |
c277df42 IZ |
2647 | /* Disable warning on "study /blah/" */ |
2648 | if (oldoldbufptr == last_uni | |
2649 | && (*last_uni != 's' || s - last_uni < 5 | |
2650 | || memNE(last_uni, "study", 5) || isALNUM(last_uni[5]))) | |
2651 | check_uni(); | |
79072805 LW |
2652 | s = scan_pat(s); |
2653 | TERM(sublex_start()); | |
378cc40b LW |
2654 | } |
2655 | tmp = *s++; | |
a687059c | 2656 | if (tmp == '/') |
79072805 | 2657 | Mop(OP_DIVIDE); |
378cc40b LW |
2658 | OPERATOR(tmp); |
2659 | ||
2660 | case '.': | |
748a9306 | 2661 | if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' && |
fd049845 | 2662 | (s == linestart || s[-1] == '\n') ) { |
85e6fe83 | 2663 | lex_formbrack = 0; |
8990e307 | 2664 | expect = XSTATE; |
79072805 LW |
2665 | goto rightbracket; |
2666 | } | |
2667 | if (expect == XOPERATOR || !isDIGIT(s[1])) { | |
378cc40b | 2668 | tmp = *s++; |
a687059c LW |
2669 | if (*s == tmp) { |
2670 | s++; | |
2f3197b3 LW |
2671 | if (*s == tmp) { |
2672 | s++; | |
79072805 | 2673 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2674 | } |
2675 | else | |
79072805 | 2676 | yylval.ival = 0; |
378cc40b | 2677 | OPERATOR(DOTDOT); |
a687059c | 2678 | } |
79072805 | 2679 | if (expect != XOPERATOR) |
2f3197b3 | 2680 | check_uni(); |
79072805 | 2681 | Aop(OP_CONCAT); |
378cc40b LW |
2682 | } |
2683 | /* FALL THROUGH */ | |
2684 | case '0': case '1': case '2': case '3': case '4': | |
2685 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2686 | s = scan_num(s); |
8990e307 LW |
2687 | if (expect == XOPERATOR) |
2688 | no_op("Number",s); | |
79072805 LW |
2689 | TERM(THING); |
2690 | ||
2691 | case '\'': | |
8990e307 | 2692 | s = scan_str(s); |
463ee0b2 | 2693 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2694 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2695 | expect = XTERM; | |
2696 | depcom(); | |
2697 | return ','; /* grandfather non-comma-format format */ | |
2698 | } | |
463ee0b2 | 2699 | else |
8990e307 | 2700 | no_op("String",s); |
463ee0b2 | 2701 | } |
79072805 | 2702 | if (!s) |
85e6fe83 | 2703 | missingterm((char*)0); |
79072805 LW |
2704 | yylval.ival = OP_CONST; |
2705 | TERM(sublex_start()); | |
2706 | ||
2707 | case '"': | |
8990e307 | 2708 | s = scan_str(s); |
463ee0b2 | 2709 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2710 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2711 | expect = XTERM; | |
2712 | depcom(); | |
2713 | return ','; /* grandfather non-comma-format format */ | |
2714 | } | |
463ee0b2 | 2715 | else |
8990e307 | 2716 | no_op("String",s); |
463ee0b2 | 2717 | } |
79072805 | 2718 | if (!s) |
85e6fe83 | 2719 | missingterm((char*)0); |
4633a7c4 LW |
2720 | yylval.ival = OP_CONST; |
2721 | for (d = SvPV(lex_stuff, len); len; len--, d++) { | |
2722 | if (*d == '$' || *d == '@' || *d == '\\') { | |
2723 | yylval.ival = OP_STRINGIFY; | |
2724 | break; | |
2725 | } | |
2726 | } | |
79072805 LW |
2727 | TERM(sublex_start()); |
2728 | ||
2729 | case '`': | |
2730 | s = scan_str(s); | |
8990e307 LW |
2731 | if (expect == XOPERATOR) |
2732 | no_op("Backticks",s); | |
79072805 | 2733 | if (!s) |
85e6fe83 | 2734 | missingterm((char*)0); |
79072805 LW |
2735 | yylval.ival = OP_BACKTICK; |
2736 | set_csh(); | |
2737 | TERM(sublex_start()); | |
2738 | ||
2739 | case '\\': | |
2740 | s++; | |
748a9306 LW |
2741 | if (dowarn && lex_inwhat && isDIGIT(*s)) |
2742 | warn("Can't use \\%c to mean $%c in expression", *s, *s); | |
8990e307 LW |
2743 | if (expect == XOPERATOR) |
2744 | no_op("Backslash",s); | |
79072805 LW |
2745 | OPERATOR(REFGEN); |
2746 | ||
2747 | case 'x': | |
2748 | if (isDIGIT(s[1]) && expect == XOPERATOR) { | |
2749 | s++; | |
2750 | Mop(OP_REPEAT); | |
2f3197b3 | 2751 | } |
79072805 LW |
2752 | goto keylookup; |
2753 | ||
378cc40b | 2754 | case '_': |
79072805 LW |
2755 | case 'a': case 'A': |
2756 | case 'b': case 'B': | |
2757 | case 'c': case 'C': | |
2758 | case 'd': case 'D': | |
2759 | case 'e': case 'E': | |
2760 | case 'f': case 'F': | |
2761 | case 'g': case 'G': | |
2762 | case 'h': case 'H': | |
2763 | case 'i': case 'I': | |
2764 | case 'j': case 'J': | |
2765 | case 'k': case 'K': | |
2766 | case 'l': case 'L': | |
2767 | case 'm': case 'M': | |
2768 | case 'n': case 'N': | |
2769 | case 'o': case 'O': | |
2770 | case 'p': case 'P': | |
2771 | case 'q': case 'Q': | |
2772 | case 'r': case 'R': | |
2773 | case 's': case 'S': | |
2774 | case 't': case 'T': | |
2775 | case 'u': case 'U': | |
2776 | case 'v': case 'V': | |
2777 | case 'w': case 'W': | |
2778 | case 'X': | |
2779 | case 'y': case 'Y': | |
2780 | case 'z': case 'Z': | |
2781 | ||
49dc05e3 | 2782 | keylookup: { |
161b471a NIS |
2783 | gv = Nullgv; |
2784 | gvp = 0; | |
49dc05e3 | 2785 | |
748a9306 | 2786 | bufptr = s; |
8903cb82 | 2787 | s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len); |
8ebc5c01 | 2788 | |
2789 | /* Some keywords can be followed by any delimiter, including ':' */ | |
2790 | tmp = (len == 1 && strchr("msyq", tokenbuf[0]) || | |
2791 | len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') || | |
2792 | (tokenbuf[0] == 'q' && | |
2793 | strchr("qwx", tokenbuf[1])))); | |
2794 | ||
2795 | /* x::* is just a word, unless x is "CORE" */ | |
2796 | if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE")) | |
4633a7c4 LW |
2797 | goto just_a_word; |
2798 | ||
3643fb5f CS |
2799 | d = s; |
2800 | while (d < bufend && isSPACE(*d)) | |
2801 | d++; /* no comments skipped here, or s### is misparsed */ | |
2802 | ||
2803 | /* Is this a label? */ | |
8ebc5c01 | 2804 | if (!tmp && expect == XSTATE |
2805 | && d < bufend && *d == ':' && *(d + 1) != ':') { | |
2806 | s = d + 1; | |
2807 | yylval.pval = savepv(tokenbuf); | |
2808 | CLINE; | |
2809 | TOKEN(LABEL); | |
3643fb5f CS |
2810 | } |
2811 | ||
2812 | /* Check for keywords */ | |
a0d0e21e | 2813 | tmp = keyword(tokenbuf, len); |
748a9306 LW |
2814 | |
2815 | /* Is this a word before a => operator? */ | |
748a9306 LW |
2816 | if (strnEQ(d,"=>",2)) { |
2817 | CLINE; | |
748a9306 LW |
2818 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0)); |
2819 | yylval.opval->op_private = OPpCONST_BARE; | |
2820 | TERM(WORD); | |
2821 | } | |
2822 | ||
a0d0e21e | 2823 | if (tmp < 0) { /* second-class keyword? */ |
49dc05e3 GS |
2824 | if (expect != XOPERATOR && (*s != ':' || s[1] != ':') && |
2825 | (((gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) && | |
2826 | GvCVu(gv) && GvIMPORTED_CV(gv)) || | |
2827 | ((gvp = (GV**)hv_fetch(globalstash,tokenbuf,len,FALSE)) && | |
2828 | (gv = *gvp) != (GV*)&sv_undef && | |
2829 | GvCVu(gv) && GvIMPORTED_CV(gv)))) | |
a0d0e21e | 2830 | { |
6e7b2336 GS |
2831 | tmp = 0; /* overridden by importation */ |
2832 | } | |
2833 | else if (gv && !gvp | |
2834 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
1d64a758 | 2835 | && !hv_fetch(GvHVn(incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
2836 | { |
2837 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 2838 | } |
49dc05e3 GS |
2839 | else { |
2840 | tmp = -tmp; gv = Nullgv; gvp = 0; | |
2841 | } | |
a0d0e21e LW |
2842 | } |
2843 | ||
2844 | reserved_word: | |
2845 | switch (tmp) { | |
79072805 LW |
2846 | |
2847 | default: /* not a keyword */ | |
93a17b20 | 2848 | just_a_word: { |
96e4d5b1 | 2849 | SV *sv; |
748a9306 | 2850 | char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]); |
8990e307 LW |
2851 | |
2852 | /* Get the rest if it looks like a package qualifier */ | |
2853 | ||
a0d0e21e | 2854 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 2855 | STRLEN morelen; |
8903cb82 | 2856 | s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len, |
c3e0f903 GS |
2857 | TRUE, &morelen); |
2858 | if (!morelen) | |
ec2ab091 HM |
2859 | croak("Bad name after %s%s", tokenbuf, |
2860 | *s == '\'' ? "'" : "::"); | |
c3e0f903 | 2861 | len += morelen; |
a0d0e21e | 2862 | } |
8990e307 | 2863 | |
3643fb5f | 2864 | if (expect == XOPERATOR) { |
fd049845 | 2865 | if (bufptr == linestart) { |
463ee0b2 LW |
2866 | curcop->cop_line--; |
2867 | warn(warn_nosemi); | |
2868 | curcop->cop_line++; | |
2869 | } | |
2870 | else | |
54310121 | 2871 | no_op("Bareword",s); |
463ee0b2 | 2872 | } |
8990e307 | 2873 | |
c3e0f903 GS |
2874 | /* Look for a subroutine with this name in current package, |
2875 | unless name is "Foo::", in which case Foo is a bearword | |
2876 | (and a package name). */ | |
2877 | ||
2878 | if (len > 2 && | |
2879 | tokenbuf[len - 2] == ':' && tokenbuf[len - 1] == ':') | |
2880 | { | |
2881 | if (dowarn && ! gv_fetchpv(tokenbuf, FALSE, SVt_PVHV)) | |
2882 | warn("Bareword \"%s\" refers to nonexistent package", | |
2883 | tokenbuf); | |
2884 | len -= 2; | |
2885 | tokenbuf[len] = '\0'; | |
2886 | gv = Nullgv; | |
2887 | gvp = 0; | |
2888 | } | |
2889 | else { | |
2890 | len = 0; | |
2891 | if (!gv) | |
2892 | gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV); | |
2893 | } | |
2894 | ||
2895 | /* if we saw a global override before, get the right name */ | |
8990e307 | 2896 | |
49dc05e3 GS |
2897 | if (gvp) { |
2898 | sv = newSVpv("CORE::GLOBAL::",14); | |
2899 | sv_catpv(sv,tokenbuf); | |
2900 | } | |
2901 | else | |
2902 | sv = newSVpv(tokenbuf,0); | |
8990e307 | 2903 | |
a0d0e21e LW |
2904 | /* Presume this is going to be a bareword of some sort. */ |
2905 | ||
2906 | CLINE; | |
49dc05e3 | 2907 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
2908 | yylval.opval->op_private = OPpCONST_BARE; |
2909 | ||
c3e0f903 GS |
2910 | /* And if "Foo::", then that's what it certainly is. */ |
2911 | ||
2912 | if (len) | |
2913 | goto safe_bareword; | |
2914 | ||
8990e307 LW |
2915 | /* See if it's the indirect object for a list operator. */ |
2916 | ||
a0d0e21e LW |
2917 | if (oldoldbufptr && |
2918 | oldoldbufptr < bufptr && | |
2919 | (oldoldbufptr == last_lop || oldoldbufptr == last_uni) && | |
2920 | /* NO SKIPSPACE BEFORE HERE! */ | |
2a841d13 IZ |
2921 | (expect == XREF |
2922 | || ((opargs[last_lop_op] >> OASHIFT)& 7) == OA_FILEREF | |
2923 | || (last_lop_op == OP_ENTERSUB | |
2924 | && last_proto | |
2925 | && last_proto[last_proto[0] == ';' ? 1 : 0] == '*')) ) | |
a0d0e21e | 2926 | { |
748a9306 LW |
2927 | bool immediate_paren = *s == '('; |
2928 | ||
a0d0e21e LW |
2929 | /* (Now we can afford to cross potential line boundary.) */ |
2930 | s = skipspace(s); | |
2931 | ||
2932 | /* Two barewords in a row may indicate method call. */ | |
2933 | ||
2934 | if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv))) | |
2935 | return tmp; | |
2936 | ||
2937 | /* If not a declared subroutine, it's an indirect object. */ | |
2938 | /* (But it's an indir obj regardless for sort.) */ | |
2939 | ||
8e07c86e | 2940 | if ((last_lop_op == OP_SORT || |
8ebc5c01 | 2941 | (!immediate_paren && (!gv || !GvCVu(gv))) ) && |
8e07c86e | 2942 | (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){ |
748a9306 LW |
2943 | expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR; |
2944 | goto bareword; | |
93a17b20 LW |
2945 | } |
2946 | } | |
8990e307 LW |
2947 | |
2948 | /* If followed by a paren, it's certainly a subroutine. */ | |
2949 | ||
2950 | expect = XOPERATOR; | |
2951 | s = skipspace(s); | |
93a17b20 | 2952 | if (*s == '(') { |
79072805 | 2953 | CLINE; |
96e4d5b1 | 2954 | if (gv && GvCVu(gv)) { |
2955 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
2956 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { | |
2957 | s = d + 1; | |
2958 | goto its_constant; | |
2959 | } | |
2960 | } | |
a0d0e21e | 2961 | nextval[nexttoke].opval = yylval.opval; |
463ee0b2 | 2962 | expect = XOPERATOR; |
93a17b20 | 2963 | force_next(WORD); |
c07a80fd | 2964 | yylval.ival = 0; |
463ee0b2 | 2965 | TOKEN('&'); |
79072805 | 2966 | } |
93a17b20 | 2967 | |
a0d0e21e | 2968 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 2969 | |
8ebc5c01 | 2970 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
463ee0b2 | 2971 | last_lop = oldbufptr; |
8990e307 | 2972 | last_lop_op = OP_METHOD; |
93a17b20 | 2973 | PREBLOCK(METHOD); |
463ee0b2 LW |
2974 | } |
2975 | ||
8990e307 LW |
2976 | /* If followed by a bareword, see if it looks like indir obj. */ |
2977 | ||
a0d0e21e LW |
2978 | if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv))) |
2979 | return tmp; | |
93a17b20 | 2980 | |
8990e307 LW |
2981 | /* Not a method, so call it a subroutine (if defined) */ |
2982 | ||
8ebc5c01 | 2983 | if (gv && GvCVu(gv)) { |
46fc3d4c | 2984 | CV* cv; |
748a9306 | 2985 | if (lastchar == '-') |
c2960299 | 2986 | warn("Ambiguous use of -%s resolved as -&%s()", |
748a9306 | 2987 | tokenbuf, tokenbuf); |
8990e307 | 2988 | last_lop = oldbufptr; |
a0d0e21e | 2989 | last_lop_op = OP_ENTERSUB; |
89bfa8cd | 2990 | /* Check for a constant sub */ |
46fc3d4c | 2991 | cv = GvCV(gv); |
96e4d5b1 | 2992 | if ((sv = cv_const_sv(cv))) { |
2993 | its_constant: | |
2994 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
2995 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
2996 | yylval.opval->op_private = 0; | |
2997 | TOKEN(WORD); | |
89bfa8cd | 2998 | } |
2999 | ||
a5f75d66 AD |
3000 | /* Resolve to GV now. */ |
3001 | op_free(yylval.opval); | |
3002 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
4633a7c4 LW |
3003 | /* Is there a prototype? */ |
3004 | if (SvPOK(cv)) { | |
3005 | STRLEN len; | |
2a841d13 | 3006 | last_proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3007 | if (!len) |
3008 | TERM(FUNC0SUB); | |
2a841d13 | 3009 | if (strEQ(last_proto, "$")) |
4633a7c4 | 3010 | OPERATOR(UNIOPSUB); |
2a841d13 | 3011 | if (*last_proto == '&' && *s == '{') { |
4633a7c4 LW |
3012 | sv_setpv(subname,"__ANON__"); |
3013 | PREBLOCK(LSTOPSUB); | |
3014 | } | |
2a841d13 IZ |
3015 | } else |
3016 | last_proto = NULL; | |
a5f75d66 | 3017 | nextval[nexttoke].opval = yylval.opval; |
8990e307 LW |
3018 | expect = XTERM; |
3019 | force_next(WORD); | |
3020 | TOKEN(NOAMP); | |
3021 | } | |
748a9306 LW |
3022 | |
3023 | if (hints & HINT_STRICT_SUBS && | |
3024 | lastchar != '-' && | |
a0d0e21e | 3025 | strnNE(s,"->",2) && |
9b01e405 | 3026 | last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */ |
a0d0e21e LW |
3027 | last_lop_op != OP_ACCEPT && |
3028 | last_lop_op != OP_PIPE_OP && | |
3029 | last_lop_op != OP_SOCKPAIR) | |
3030 | { | |
3031 | warn( | |
3032 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
85e6fe83 LW |
3033 | tokenbuf); |
3034 | ++error_count; | |
3035 | } | |
8990e307 LW |
3036 | |
3037 | /* Call it a bare word */ | |
3038 | ||
748a9306 LW |
3039 | bareword: |
3040 | if (dowarn) { | |
3041 | if (lastchar != '-') { | |
3042 | for (d = tokenbuf; *d && isLOWER(*d); d++) ; | |
3043 | if (!*d) | |
3044 | warn(warn_reserved, tokenbuf); | |
3045 | } | |
3046 | } | |
c3e0f903 GS |
3047 | |
3048 | safe_bareword: | |
748a9306 LW |
3049 | if (lastchar && strchr("*%&", lastchar)) { |
3050 | warn("Operator or semicolon missing before %c%s", | |
3051 | lastchar, tokenbuf); | |
c2960299 | 3052 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3053 | lastchar, lastchar); |
3054 | } | |
93a17b20 | 3055 | TOKEN(WORD); |
79072805 | 3056 | } |
79072805 | 3057 | |
68dc0745 | 3058 | case KEY___FILE__: |
46fc3d4c | 3059 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3060 | newSVsv(GvSV(curcop->cop_filegv))); | |
3061 | TERM(THING); | |
3062 | ||
79072805 | 3063 | case KEY___LINE__: |
46fc3d4c | 3064 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3065 | newSVpvf("%ld", (long)curcop->cop_line)); | |
79072805 | 3066 | TERM(THING); |
68dc0745 | 3067 | |
3068 | case KEY___PACKAGE__: | |
3069 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3070 | (curstash | |
3071 | ? newSVsv(curstname) | |
3072 | : &sv_undef)); | |
79072805 | 3073 | TERM(THING); |
79072805 | 3074 | |
e50aee73 | 3075 | case KEY___DATA__: |
79072805 LW |
3076 | case KEY___END__: { |
3077 | GV *gv; | |
79072805 LW |
3078 | |
3079 | /*SUPPRESS 560*/ | |
a5f75d66 | 3080 | if (rsfp && (!in_eval || tokenbuf[2] == 'D')) { |
e50aee73 AD |
3081 | char *pname = "main"; |
3082 | if (tokenbuf[2] == 'D') | |
3083 | pname = HvNAME(curstash ? curstash : defstash); | |
46fc3d4c | 3084 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3085 | GvMULTI_on(gv); |
79072805 | 3086 | if (!GvIO(gv)) |
a0d0e21e LW |
3087 | GvIOp(gv) = newIO(); |
3088 | IoIFP(GvIOp(gv)) = rsfp; | |
3089 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
3090 | { | |
760ac839 | 3091 | int fd = PerlIO_fileno(rsfp); |
a0d0e21e LW |
3092 | fcntl(fd,F_SETFD,fd >= 3); |
3093 | } | |
79072805 | 3094 | #endif |
fd049845 | 3095 | /* Mark this internal pseudo-handle as clean */ |
3096 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
79072805 | 3097 | if (preprocess) |
a0d0e21e | 3098 | IoTYPE(GvIOp(gv)) = '|'; |
760ac839 | 3099 | else if ((PerlIO*)rsfp == PerlIO_stdin()) |
a0d0e21e | 3100 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3101 | else |
a0d0e21e | 3102 | IoTYPE(GvIOp(gv)) = '<'; |
79072805 LW |
3103 | rsfp = Nullfp; |
3104 | } | |
3105 | goto fake_eof; | |
e929a76b | 3106 | } |
de3bb511 | 3107 | |
8990e307 | 3108 | case KEY_AUTOLOAD: |
ed6116ce | 3109 | case KEY_DESTROY: |
79072805 LW |
3110 | case KEY_BEGIN: |
3111 | case KEY_END: | |
7d07dbc2 | 3112 | case KEY_INIT: |
a0d0e21e | 3113 | if (expect == XSTATE) { |
93a17b20 LW |
3114 | s = bufptr; |
3115 | goto really_sub; | |
79072805 LW |
3116 | } |
3117 | goto just_a_word; | |
3118 | ||
a0d0e21e LW |
3119 | case KEY_CORE: |
3120 | if (*s == ':' && s[1] == ':') { | |
3121 | s += 2; | |
748a9306 | 3122 | d = s; |
8903cb82 | 3123 | s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len); |
a0d0e21e LW |
3124 | tmp = keyword(tokenbuf, len); |
3125 | if (tmp < 0) | |
3126 | tmp = -tmp; | |
3127 | goto reserved_word; | |
3128 | } | |
3129 | goto just_a_word; | |
3130 | ||
463ee0b2 LW |
3131 | case KEY_abs: |
3132 | UNI(OP_ABS); | |
3133 | ||
79072805 LW |
3134 | case KEY_alarm: |
3135 | UNI(OP_ALARM); | |
3136 | ||
3137 | case KEY_accept: | |
a0d0e21e | 3138 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3139 | |
463ee0b2 LW |
3140 | case KEY_and: |
3141 | OPERATOR(ANDOP); | |
3142 | ||
79072805 | 3143 | case KEY_atan2: |
a0d0e21e | 3144 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3145 | |
79072805 | 3146 | case KEY_bind: |
a0d0e21e | 3147 | LOP(OP_BIND,XTERM); |
79072805 LW |
3148 | |
3149 | case KEY_binmode: | |
3150 | UNI(OP_BINMODE); | |
3151 | ||
3152 | case KEY_bless: | |
a0d0e21e | 3153 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3154 | |
3155 | case KEY_chop: | |
3156 | UNI(OP_CHOP); | |
3157 | ||
3158 | case KEY_continue: | |
3159 | PREBLOCK(CONTINUE); | |
3160 | ||
3161 | case KEY_chdir: | |
85e6fe83 | 3162 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3163 | UNI(OP_CHDIR); |
3164 | ||
3165 | case KEY_close: | |
3166 | UNI(OP_CLOSE); | |
3167 | ||
3168 | case KEY_closedir: | |
3169 | UNI(OP_CLOSEDIR); | |
3170 | ||
3171 | case KEY_cmp: | |
3172 | Eop(OP_SCMP); | |
3173 | ||
3174 | case KEY_caller: | |
3175 | UNI(OP_CALLER); | |
3176 | ||
3177 | case KEY_crypt: | |
3178 | #ifdef FCRYPT | |
de3bb511 LW |
3179 | if (!cryptseen++) |
3180 | init_des(); | |
a687059c | 3181 | #endif |
a0d0e21e | 3182 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3183 | |
3184 | case KEY_chmod: | |
748a9306 LW |
3185 | if (dowarn) { |
3186 | for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ; | |
3187 | if (*d != '0' && isDIGIT(*d)) | |
3188 | yywarn("chmod: mode argument is missing initial 0"); | |
3189 | } | |
a0d0e21e | 3190 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3191 | |
3192 | case KEY_chown: | |
a0d0e21e | 3193 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3194 | |
3195 | case KEY_connect: | |
a0d0e21e | 3196 | LOP(OP_CONNECT,XTERM); |
79072805 | 3197 | |
463ee0b2 LW |
3198 | case KEY_chr: |
3199 | UNI(OP_CHR); | |
3200 | ||
79072805 LW |
3201 | case KEY_cos: |
3202 | UNI(OP_COS); | |
3203 | ||
3204 | case KEY_chroot: | |
3205 | UNI(OP_CHROOT); | |
3206 | ||
3207 | case KEY_do: | |
3208 | s = skipspace(s); | |
3209 | if (*s == '{') | |
a0d0e21e | 3210 | PRETERMBLOCK(DO); |
79072805 | 3211 | if (*s != '\'') |
a0d0e21e | 3212 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3213 | OPERATOR(DO); |
79072805 LW |
3214 | |
3215 | case KEY_die: | |
a0d0e21e LW |
3216 | hints |= HINT_BLOCK_SCOPE; |
3217 | LOP(OP_DIE,XTERM); | |
79072805 LW |
3218 | |
3219 | case KEY_defined: | |
3220 | UNI(OP_DEFINED); | |
3221 | ||
3222 | case KEY_delete: | |
a0d0e21e | 3223 | UNI(OP_DELETE); |
79072805 LW |
3224 | |
3225 | case KEY_dbmopen: | |
a0d0e21e LW |
3226 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3227 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3228 | |
3229 | case KEY_dbmclose: | |
3230 | UNI(OP_DBMCLOSE); | |
3231 | ||
3232 | case KEY_dump: | |
a0d0e21e | 3233 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3234 | LOOPX(OP_DUMP); |
3235 | ||
3236 | case KEY_else: | |
3237 | PREBLOCK(ELSE); | |
3238 | ||
3239 | case KEY_elsif: | |
3240 | yylval.ival = curcop->cop_line; | |
3241 | OPERATOR(ELSIF); | |
3242 | ||
3243 | case KEY_eq: | |
3244 | Eop(OP_SEQ); | |
3245 | ||
a0d0e21e LW |
3246 | case KEY_exists: |
3247 | UNI(OP_EXISTS); | |
3248 | ||
79072805 LW |
3249 | case KEY_exit: |
3250 | UNI(OP_EXIT); | |
3251 | ||
3252 | case KEY_eval: | |
79072805 | 3253 | s = skipspace(s); |
a0d0e21e | 3254 | expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3255 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3256 | |
3257 | case KEY_eof: | |
3258 | UNI(OP_EOF); | |
3259 | ||
3260 | case KEY_exp: | |
3261 | UNI(OP_EXP); | |
3262 | ||
3263 | case KEY_each: | |
3264 | UNI(OP_EACH); | |
3265 | ||
3266 | case KEY_exec: | |
3267 | set_csh(); | |
a0d0e21e | 3268 | LOP(OP_EXEC,XREF); |
79072805 LW |
3269 | |
3270 | case KEY_endhostent: | |
3271 | FUN0(OP_EHOSTENT); | |
3272 | ||
3273 | case KEY_endnetent: | |
3274 | FUN0(OP_ENETENT); | |
3275 | ||
3276 | case KEY_endservent: | |
3277 | FUN0(OP_ESERVENT); | |
3278 | ||
3279 | case KEY_endprotoent: | |
3280 | FUN0(OP_EPROTOENT); | |
3281 | ||
3282 | case KEY_endpwent: | |
3283 | FUN0(OP_EPWENT); | |
3284 | ||
3285 | case KEY_endgrent: | |
3286 | FUN0(OP_EGRENT); | |
3287 | ||
3288 | case KEY_for: | |
3289 | case KEY_foreach: | |
3290 | yylval.ival = curcop->cop_line; | |
55497cff | 3291 | s = skipspace(s); |
ecca16b0 | 3292 | if (expect == XSTATE && isIDFIRST(*s)) { |
55497cff | 3293 | char *p = s; |
3294 | if ((bufend - p) >= 3 && | |
3295 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) | |
3296 | p += 2; | |
3297 | p = skipspace(p); | |
3298 | if (isIDFIRST(*p)) | |
3299 | croak("Missing $ on loop variable"); | |
3300 | } | |
79072805 LW |
3301 | OPERATOR(FOR); |
3302 | ||
3303 | case KEY_formline: | |
a0d0e21e | 3304 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3305 | |
3306 | case KEY_fork: | |
3307 | FUN0(OP_FORK); | |
3308 | ||
3309 | case KEY_fcntl: | |
a0d0e21e | 3310 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3311 | |
3312 | case KEY_fileno: | |
3313 | UNI(OP_FILENO); | |
3314 | ||
3315 | case KEY_flock: | |
a0d0e21e | 3316 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3317 | |
3318 | case KEY_gt: | |
3319 | Rop(OP_SGT); | |
3320 | ||
3321 | case KEY_ge: | |
3322 | Rop(OP_SGE); | |
3323 | ||
3324 | case KEY_grep: | |
a0d0e21e | 3325 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3326 | |
3327 | case KEY_goto: | |
a0d0e21e | 3328 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3329 | LOOPX(OP_GOTO); |
3330 | ||
3331 | case KEY_gmtime: | |
3332 | UNI(OP_GMTIME); | |
3333 | ||
3334 | case KEY_getc: | |
3335 | UNI(OP_GETC); | |
3336 | ||
3337 | case KEY_getppid: | |
3338 | FUN0(OP_GETPPID); | |
3339 | ||
3340 | case KEY_getpgrp: | |
3341 | UNI(OP_GETPGRP); | |
3342 | ||
3343 | case KEY_getpriority: | |
a0d0e21e | 3344 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3345 | |
3346 | case KEY_getprotobyname: | |
3347 | UNI(OP_GPBYNAME); | |
3348 | ||
3349 | case KEY_getprotobynumber: | |
a0d0e21e | 3350 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3351 | |
3352 | case KEY_getprotoent: | |
3353 | FUN0(OP_GPROTOENT); | |
3354 | ||
3355 | case KEY_getpwent: | |
3356 | FUN0(OP_GPWENT); | |
3357 | ||
3358 | case KEY_getpwnam: | |
ff68c719 | 3359 | UNI(OP_GPWNAM); |
79072805 LW |
3360 | |
3361 | case KEY_getpwuid: | |
ff68c719 | 3362 | UNI(OP_GPWUID); |
79072805 LW |
3363 | |
3364 | case KEY_getpeername: | |
3365 | UNI(OP_GETPEERNAME); | |
3366 | ||
3367 | case KEY_gethostbyname: | |
3368 | UNI(OP_GHBYNAME); | |
3369 | ||
3370 | case KEY_gethostbyaddr: | |
a0d0e21e | 3371 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
3372 | |
3373 | case KEY_gethostent: | |
3374 | FUN0(OP_GHOSTENT); | |
3375 | ||
3376 | case KEY_getnetbyname: | |
3377 | UNI(OP_GNBYNAME); | |
3378 | ||
3379 | case KEY_getnetbyaddr: | |
a0d0e21e | 3380 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
3381 | |
3382 | case KEY_getnetent: | |
3383 | FUN0(OP_GNETENT); | |
3384 | ||
3385 | case KEY_getservbyname: | |
a0d0e21e | 3386 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
3387 | |
3388 | case KEY_getservbyport: | |
a0d0e21e | 3389 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
3390 | |
3391 | case KEY_getservent: | |
3392 | FUN0(OP_GSERVENT); | |
3393 | ||
3394 | case KEY_getsockname: | |
3395 | UNI(OP_GETSOCKNAME); | |
3396 | ||
3397 | case KEY_getsockopt: | |
a0d0e21e | 3398 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
3399 | |
3400 | case KEY_getgrent: | |
3401 | FUN0(OP_GGRENT); | |
3402 | ||
3403 | case KEY_getgrnam: | |
ff68c719 | 3404 | UNI(OP_GGRNAM); |
79072805 LW |
3405 | |
3406 | case KEY_getgrgid: | |
ff68c719 | 3407 | UNI(OP_GGRGID); |
79072805 LW |
3408 | |
3409 | case KEY_getlogin: | |
3410 | FUN0(OP_GETLOGIN); | |
3411 | ||
93a17b20 | 3412 | case KEY_glob: |
a0d0e21e LW |
3413 | set_csh(); |
3414 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 3415 | |
79072805 LW |
3416 | case KEY_hex: |
3417 | UNI(OP_HEX); | |
3418 | ||
3419 | case KEY_if: | |
3420 | yylval.ival = curcop->cop_line; | |
3421 | OPERATOR(IF); | |
3422 | ||
3423 | case KEY_index: | |
a0d0e21e | 3424 | LOP(OP_INDEX,XTERM); |
79072805 LW |
3425 | |
3426 | case KEY_int: | |
3427 | UNI(OP_INT); | |
3428 | ||
3429 | case KEY_ioctl: | |
a0d0e21e | 3430 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
3431 | |
3432 | case KEY_join: | |
a0d0e21e | 3433 | LOP(OP_JOIN,XTERM); |
79072805 LW |
3434 | |
3435 | case KEY_keys: | |
3436 | UNI(OP_KEYS); | |
3437 | ||
3438 | case KEY_kill: | |
a0d0e21e | 3439 | LOP(OP_KILL,XTERM); |
79072805 LW |
3440 | |
3441 | case KEY_last: | |
a0d0e21e | 3442 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 3443 | LOOPX(OP_LAST); |
a0d0e21e | 3444 | |
79072805 LW |
3445 | case KEY_lc: |
3446 | UNI(OP_LC); | |
3447 | ||
3448 | case KEY_lcfirst: | |
3449 | UNI(OP_LCFIRST); | |
3450 | ||
3451 | case KEY_local: | |
3452 | OPERATOR(LOCAL); | |
3453 | ||
3454 | case KEY_length: | |
3455 | UNI(OP_LENGTH); | |
3456 | ||
3457 | case KEY_lt: | |
3458 | Rop(OP_SLT); | |
3459 | ||
3460 | case KEY_le: | |
3461 | Rop(OP_SLE); | |
3462 | ||
3463 | case KEY_localtime: | |
3464 | UNI(OP_LOCALTIME); | |
3465 | ||
3466 | case KEY_log: | |
3467 | UNI(OP_LOG); | |
3468 | ||
3469 | case KEY_link: | |
a0d0e21e | 3470 | LOP(OP_LINK,XTERM); |
79072805 LW |
3471 | |
3472 | case KEY_listen: | |
a0d0e21e | 3473 | LOP(OP_LISTEN,XTERM); |
79072805 | 3474 | |
c0329465 MB |
3475 | case KEY_lock: |
3476 | UNI(OP_LOCK); | |
3477 | ||
79072805 LW |
3478 | case KEY_lstat: |
3479 | UNI(OP_LSTAT); | |
3480 | ||
3481 | case KEY_m: | |
3482 | s = scan_pat(s); | |
3483 | TERM(sublex_start()); | |
3484 | ||
a0d0e21e LW |
3485 | case KEY_map: |
3486 | LOP(OP_MAPSTART,XREF); | |
3487 | ||
79072805 | 3488 | case KEY_mkdir: |
a0d0e21e | 3489 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
3490 | |
3491 | case KEY_msgctl: | |
a0d0e21e | 3492 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
3493 | |
3494 | case KEY_msgget: | |
a0d0e21e | 3495 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
3496 | |
3497 | case KEY_msgrcv: | |
a0d0e21e | 3498 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
3499 | |
3500 | case KEY_msgsnd: | |
a0d0e21e | 3501 | LOP(OP_MSGSND,XTERM); |
79072805 | 3502 | |
93a17b20 LW |
3503 | case KEY_my: |
3504 | in_my = TRUE; | |
c750a3ec MB |
3505 | s = skipspace(s); |
3506 | if (isIDFIRST(*s)) { | |
97fcbf96 | 3507 | s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len); |
c750a3ec MB |
3508 | in_my_stash = gv_stashpv(tokenbuf, FALSE); |
3509 | if (!in_my_stash) { | |
3510 | char tmpbuf[1024]; | |
3511 | bufptr = s; | |
3512 | sprintf(tmpbuf, "No such class %.1000s", tokenbuf); | |
3513 | yyerror(tmpbuf); | |
3514 | } | |
3515 | } | |
55497cff | 3516 | OPERATOR(MY); |
93a17b20 | 3517 | |
79072805 | 3518 | case KEY_next: |
a0d0e21e | 3519 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3520 | LOOPX(OP_NEXT); |
3521 | ||
3522 | case KEY_ne: | |
3523 | Eop(OP_SNE); | |
3524 | ||
a0d0e21e LW |
3525 | case KEY_no: |
3526 | if (expect != XSTATE) | |
3527 | yyerror("\"no\" not allowed in expression"); | |
3528 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 3529 | s = force_version(s); |
a0d0e21e LW |
3530 | yylval.ival = 0; |
3531 | OPERATOR(USE); | |
3532 | ||
3533 | case KEY_not: | |
3534 | OPERATOR(NOTOP); | |
3535 | ||
79072805 | 3536 | case KEY_open: |
93a17b20 LW |
3537 | s = skipspace(s); |
3538 | if (isIDFIRST(*s)) { | |
3539 | char *t; | |
3540 | for (d = s; isALNUM(*d); d++) ; | |
3541 | t = skipspace(d); | |
3542 | if (strchr("|&*+-=!?:.", *t)) | |
3543 | warn("Precedence problem: open %.*s should be open(%.*s)", | |
3544 | d-s,s, d-s,s); | |
3545 | } | |
a0d0e21e | 3546 | LOP(OP_OPEN,XTERM); |
79072805 | 3547 | |
463ee0b2 | 3548 | case KEY_or: |
a0d0e21e | 3549 | yylval.ival = OP_OR; |
463ee0b2 LW |
3550 | OPERATOR(OROP); |
3551 | ||
79072805 LW |
3552 | case KEY_ord: |
3553 | UNI(OP_ORD); | |
3554 | ||
3555 | case KEY_oct: | |
3556 | UNI(OP_OCT); | |
3557 | ||
3558 | case KEY_opendir: | |
a0d0e21e | 3559 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
3560 | |
3561 | case KEY_print: | |
3562 | checkcomma(s,tokenbuf,"filehandle"); | |
a0d0e21e | 3563 | LOP(OP_PRINT,XREF); |
79072805 LW |
3564 | |
3565 | case KEY_printf: | |
3566 | checkcomma(s,tokenbuf,"filehandle"); | |
a0d0e21e | 3567 | LOP(OP_PRTF,XREF); |
79072805 | 3568 | |
c07a80fd | 3569 | case KEY_prototype: |
3570 | UNI(OP_PROTOTYPE); | |
3571 | ||
79072805 | 3572 | case KEY_push: |
a0d0e21e | 3573 | LOP(OP_PUSH,XTERM); |
79072805 LW |
3574 | |
3575 | case KEY_pop: | |
3576 | UNI(OP_POP); | |
3577 | ||
a0d0e21e LW |
3578 | case KEY_pos: |
3579 | UNI(OP_POS); | |
3580 | ||
79072805 | 3581 | case KEY_pack: |
a0d0e21e | 3582 | LOP(OP_PACK,XTERM); |
79072805 LW |
3583 | |
3584 | case KEY_package: | |
a0d0e21e | 3585 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
3586 | OPERATOR(PACKAGE); |
3587 | ||
3588 | case KEY_pipe: | |
a0d0e21e | 3589 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
3590 | |
3591 | case KEY_q: | |
3592 | s = scan_str(s); | |
3593 | if (!s) | |
85e6fe83 | 3594 | missingterm((char*)0); |
79072805 LW |
3595 | yylval.ival = OP_CONST; |
3596 | TERM(sublex_start()); | |
3597 | ||
a0d0e21e LW |
3598 | case KEY_quotemeta: |
3599 | UNI(OP_QUOTEMETA); | |
3600 | ||
8990e307 LW |
3601 | case KEY_qw: |
3602 | s = scan_str(s); | |
3603 | if (!s) | |
85e6fe83 | 3604 | missingterm((char*)0); |
55497cff | 3605 | if (dowarn && SvLEN(lex_stuff)) { |
3606 | d = SvPV_force(lex_stuff, len); | |
3607 | for (; len; --len, ++d) { | |
3608 | if (*d == ',') { | |
3609 | warn("Possible attempt to separate words with commas"); | |
3610 | break; | |
3611 | } | |
3612 | if (*d == '#') { | |
3613 | warn("Possible attempt to put comments in qw() list"); | |
3614 | break; | |
3615 | } | |
3616 | } | |
3617 | } | |
8990e307 | 3618 | force_next(')'); |
76e3520e | 3619 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, tokeq(lex_stuff)); |
8990e307 LW |
3620 | lex_stuff = Nullsv; |
3621 | force_next(THING); | |
3622 | force_next(','); | |
3623 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1)); | |
3624 | force_next(THING); | |
3625 | force_next('('); | |
a0d0e21e LW |
3626 | yylval.ival = OP_SPLIT; |
3627 | CLINE; | |
3628 | expect = XTERM; | |
3629 | bufptr = s; | |
3630 | last_lop = oldbufptr; | |
3631 | last_lop_op = OP_SPLIT; | |
3632 | return FUNC; | |
8990e307 | 3633 | |
79072805 LW |
3634 | case KEY_qq: |
3635 | s = scan_str(s); | |
3636 | if (!s) | |
85e6fe83 | 3637 | missingterm((char*)0); |
a0d0e21e | 3638 | yylval.ival = OP_STRINGIFY; |
ed6116ce LW |
3639 | if (SvIVX(lex_stuff) == '\'') |
3640 | SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
3641 | TERM(sublex_start()); |
3642 | ||
3643 | case KEY_qx: | |
3644 | s = scan_str(s); | |
3645 | if (!s) | |
85e6fe83 | 3646 | missingterm((char*)0); |
79072805 LW |
3647 | yylval.ival = OP_BACKTICK; |
3648 | set_csh(); | |
3649 | TERM(sublex_start()); | |
3650 | ||
3651 | case KEY_return: | |
3652 | OLDLOP(OP_RETURN); | |
3653 | ||
3654 | case KEY_require: | |
748a9306 | 3655 | *tokenbuf = '\0'; |
a0d0e21e | 3656 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
748a9306 | 3657 | if (isIDFIRST(*tokenbuf)) |
89bfa8cd | 3658 | gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE); |
748a9306 | 3659 | else if (*s == '<') |
a0d0e21e | 3660 | yyerror("<> should be quotes"); |
463ee0b2 | 3661 | UNI(OP_REQUIRE); |
79072805 LW |
3662 | |
3663 | case KEY_reset: | |
3664 | UNI(OP_RESET); | |
3665 | ||
3666 | case KEY_redo: | |
a0d0e21e | 3667 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3668 | LOOPX(OP_REDO); |
3669 | ||
3670 | case KEY_rename: | |
a0d0e21e | 3671 | LOP(OP_RENAME,XTERM); |
79072805 LW |
3672 | |
3673 | case KEY_rand: | |
3674 | UNI(OP_RAND); | |
3675 | ||
3676 | case KEY_rmdir: | |
3677 | UNI(OP_RMDIR); | |
3678 | ||
3679 | case KEY_rindex: | |
a0d0e21e | 3680 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
3681 | |
3682 | case KEY_read: | |
a0d0e21e | 3683 | LOP(OP_READ,XTERM); |
79072805 LW |
3684 | |
3685 | case KEY_readdir: | |
3686 | UNI(OP_READDIR); | |
3687 | ||
93a17b20 LW |
3688 | case KEY_readline: |
3689 | set_csh(); | |
3690 | UNI(OP_READLINE); | |
3691 | ||
3692 | case KEY_readpipe: | |
3693 | set_csh(); | |
3694 | UNI(OP_BACKTICK); | |
3695 | ||
79072805 LW |
3696 | case KEY_rewinddir: |
3697 | UNI(OP_REWINDDIR); | |
3698 | ||
3699 | case KEY_recv: | |
a0d0e21e | 3700 | LOP(OP_RECV,XTERM); |
79072805 LW |
3701 | |
3702 | case KEY_reverse: | |
a0d0e21e | 3703 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
3704 | |
3705 | case KEY_readlink: | |
3706 | UNI(OP_READLINK); | |
3707 | ||
3708 | case KEY_ref: | |
3709 | UNI(OP_REF); | |
3710 | ||
3711 | case KEY_s: | |
3712 | s = scan_subst(s); | |
3713 | if (yylval.opval) | |
3714 | TERM(sublex_start()); | |
3715 | else | |
3716 | TOKEN(1); /* force error */ | |
3717 | ||
a0d0e21e LW |
3718 | case KEY_chomp: |
3719 | UNI(OP_CHOMP); | |
3720 | ||
79072805 LW |
3721 | case KEY_scalar: |
3722 | UNI(OP_SCALAR); | |
3723 | ||
3724 | case KEY_select: | |
a0d0e21e | 3725 | LOP(OP_SELECT,XTERM); |
79072805 LW |
3726 | |
3727 | case KEY_seek: | |
a0d0e21e | 3728 | LOP(OP_SEEK,XTERM); |
79072805 LW |
3729 | |
3730 | case KEY_semctl: | |
a0d0e21e | 3731 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
3732 | |
3733 | case KEY_semget: | |
a0d0e21e | 3734 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
3735 | |
3736 | case KEY_semop: | |
a0d0e21e | 3737 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
3738 | |
3739 | case KEY_send: | |
a0d0e21e | 3740 | LOP(OP_SEND,XTERM); |
79072805 LW |
3741 | |
3742 | case KEY_setpgrp: | |
a0d0e21e | 3743 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
3744 | |
3745 | case KEY_setpriority: | |
a0d0e21e | 3746 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
3747 | |
3748 | case KEY_sethostent: | |
ff68c719 | 3749 | UNI(OP_SHOSTENT); |
79072805 LW |
3750 | |
3751 | case KEY_setnetent: | |
ff68c719 | 3752 | UNI(OP_SNETENT); |
79072805 LW |
3753 | |
3754 | case KEY_setservent: | |
ff68c719 | 3755 | UNI(OP_SSERVENT); |
79072805 LW |
3756 | |
3757 | case KEY_setprotoent: | |
ff68c719 | 3758 | UNI(OP_SPROTOENT); |
79072805 LW |
3759 | |
3760 | case KEY_setpwent: | |
3761 | FUN0(OP_SPWENT); | |
3762 | ||
3763 | case KEY_setgrent: | |
3764 | FUN0(OP_SGRENT); | |
3765 | ||
3766 | case KEY_seekdir: | |
a0d0e21e | 3767 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
3768 | |
3769 | case KEY_setsockopt: | |
a0d0e21e | 3770 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
3771 | |
3772 | case KEY_shift: | |
3773 | UNI(OP_SHIFT); | |
3774 | ||
3775 | case KEY_shmctl: | |
a0d0e21e | 3776 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
3777 | |
3778 | case KEY_shmget: | |
a0d0e21e | 3779 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
3780 | |
3781 | case KEY_shmread: | |
a0d0e21e | 3782 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
3783 | |
3784 | case KEY_shmwrite: | |
a0d0e21e | 3785 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
3786 | |
3787 | case KEY_shutdown: | |
a0d0e21e | 3788 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
3789 | |
3790 | case KEY_sin: | |
3791 | UNI(OP_SIN); | |
3792 |