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 | |
a0d0e21e LW |
17 | static void check_uni _((void)); |
18 | static void force_next _((I32 type)); | |
89bfa8cd | 19 | static char *force_version _((char *start)); |
a0d0e21e LW |
20 | static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick)); |
21 | static SV *q _((SV *sv)); | |
22 | static char *scan_const _((char *start)); | |
23 | static char *scan_formline _((char *s)); | |
24 | static char *scan_heredoc _((char *s)); | |
8903cb82 | 25 | static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen, |
26 | I32 ck_uni)); | |
a0d0e21e LW |
27 | static char *scan_inputsymbol _((char *start)); |
28 | static char *scan_pat _((char *start)); | |
29 | static char *scan_str _((char *start)); | |
30 | static char *scan_subst _((char *start)); | |
31 | static char *scan_trans _((char *start)); | |
8903cb82 | 32 | static char *scan_word _((char *s, char *dest, STRLEN destlen, |
33 | int allow_package, STRLEN *slp)); | |
a0d0e21e LW |
34 | static char *skipspace _((char *s)); |
35 | static void checkcomma _((char *s, char *name, char *what)); | |
36 | static void force_ident _((char *s, int kind)); | |
37 | static void incline _((char *s)); | |
38 | static int intuit_method _((char *s, GV *gv)); | |
39 | static int intuit_more _((char *s)); | |
40 | static I32 lop _((I32 f, expectation x, char *s)); | |
41 | static void missingterm _((char *s)); | |
42 | static void no_op _((char *what, char *s)); | |
43 | static void set_csh _((void)); | |
44 | static I32 sublex_done _((void)); | |
55497cff | 45 | static I32 sublex_push _((void)); |
a0d0e21e LW |
46 | static I32 sublex_start _((void)); |
47 | #ifdef CRIPPLED_CC | |
48 | static int uni _((I32 f, char *s)); | |
49 | #endif | |
fd049845 | 50 | static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append)); |
6d5fb7e3 | 51 | static void restore_rsfp _((void *f)); |
49d8d3a1 MB |
52 | static void restore_expect _((void *e)); |
53 | static void restore_lex_expect _((void *e)); | |
2f3197b3 | 54 | |
fc36a67e | 55 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 56 | |
fd049845 | 57 | static char *linestart; /* beg. of most recently read line */ |
58 | ||
bbce6d69 | 59 | static char pending_ident; /* pending identifier lookup */ |
60 | ||
55497cff | 61 | static struct { |
62 | I32 super_state; /* lexer state to save */ | |
63 | I32 sub_inwhat; /* "lex_inwhat" to use */ | |
64 | OP *sub_op; /* "lex_op" to use */ | |
65 | } sublex_info; | |
66 | ||
79072805 LW |
67 | /* The following are arranged oddly so that the guard on the switch statement |
68 | * can get by with a single comparison (if the compiler is smart enough). | |
69 | */ | |
70 | ||
fb73857a | 71 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
72 | ||
55497cff | 73 | #define LEX_NORMAL 10 |
74 | #define LEX_INTERPNORMAL 9 | |
75 | #define LEX_INTERPCASEMOD 8 | |
76 | #define LEX_INTERPPUSH 7 | |
77 | #define LEX_INTERPSTART 6 | |
78 | #define LEX_INTERPEND 5 | |
79 | #define LEX_INTERPENDMAYBE 4 | |
80 | #define LEX_INTERPCONCAT 3 | |
81 | #define LEX_INTERPCONST 2 | |
82 | #define LEX_FORMLINE 1 | |
83 | #define LEX_KNOWNEXT 0 | |
79072805 | 84 | |
395c3793 LW |
85 | #ifdef I_FCNTL |
86 | #include <fcntl.h> | |
87 | #endif | |
fe14fcc3 LW |
88 | #ifdef I_SYS_FILE |
89 | #include <sys/file.h> | |
90 | #endif | |
395c3793 | 91 | |
a790bc05 | 92 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
93 | #ifdef I_UNISTD | |
94 | # include <unistd.h> /* Needed for execv() */ | |
95 | #endif | |
96 | ||
97 | ||
79072805 LW |
98 | #ifdef ff_next |
99 | #undef ff_next | |
d48672a2 LW |
100 | #endif |
101 | ||
79072805 | 102 | #include "keywords.h" |
fe14fcc3 | 103 | |
ae986130 LW |
104 | #ifdef CLINE |
105 | #undef CLINE | |
106 | #endif | |
79072805 | 107 | #define CLINE (copline = (curcop->cop_line < copline ? curcop->cop_line : copline)) |
378cc40b | 108 | |
79072805 LW |
109 | #define TOKEN(retval) return (bufptr = s,(int)retval) |
110 | #define OPERATOR(retval) return (expect = XTERM,bufptr = s,(int)retval) | |
a0d0e21e | 111 | #define AOPERATOR(retval) return ao((expect = XTERM,bufptr = s,(int)retval)) |
79072805 | 112 | #define PREBLOCK(retval) return (expect = XBLOCK,bufptr = s,(int)retval) |
a0d0e21e | 113 | #define PRETERMBLOCK(retval) return (expect = XTERMBLOCK,bufptr = s,(int)retval) |
79072805 LW |
114 | #define PREREF(retval) return (expect = XREF,bufptr = s,(int)retval) |
115 | #define TERM(retval) return (CLINE, expect = XOPERATOR,bufptr = s,(int)retval) | |
463ee0b2 | 116 | #define LOOPX(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LOOPEX) |
79072805 LW |
117 | #define FTST(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)UNIOP) |
118 | #define FUN0(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC0) | |
119 | #define FUN1(f) return(yylval.ival = f,expect = XOPERATOR,bufptr = s,(int)FUNC1) | |
a0d0e21e LW |
120 | #define BOop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITOROP)) |
121 | #define BAop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)BITANDOP)) | |
122 | #define SHop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)SHIFTOP)) | |
123 | #define PWop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)POWOP)) | |
79072805 | 124 | #define PMop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)MATCHOP) |
a0d0e21e LW |
125 | #define Aop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)ADDOP)) |
126 | #define Mop(f) return ao((yylval.ival=f,expect = XTERM,bufptr = s,(int)MULOP)) | |
79072805 LW |
127 | #define Eop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)EQOP) |
128 | #define Rop(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)RELOP) | |
2f3197b3 | 129 | |
a687059c LW |
130 | /* This bit of chicanery makes a unary function followed by |
131 | * a parenthesis into a function with one argument, highest precedence. | |
132 | */ | |
2f3197b3 | 133 | #define UNI(f) return(yylval.ival = f, \ |
79072805 | 134 | expect = XTERM, \ |
2f3197b3 LW |
135 | bufptr = s, \ |
136 | last_uni = oldbufptr, \ | |
a0d0e21e | 137 | last_lop_op = f, \ |
a687059c LW |
138 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
139 | ||
79072805 LW |
140 | #define UNIBRACK(f) return(yylval.ival = f, \ |
141 | bufptr = s, \ | |
142 | last_uni = oldbufptr, \ | |
143 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) | |
144 | ||
9f68db38 | 145 | /* grandfather return to old style */ |
79072805 LW |
146 | #define OLDLOP(f) return(yylval.ival=f,expect = XTERM,bufptr = s,(int)LSTOP) |
147 | ||
a0d0e21e | 148 | static int |
8ac85365 | 149 | ao(int toketype) |
a0d0e21e LW |
150 | { |
151 | if (*bufptr == '=') { | |
152 | bufptr++; | |
153 | if (toketype == ANDAND) | |
154 | yylval.ival = OP_ANDASSIGN; | |
155 | else if (toketype == OROR) | |
156 | yylval.ival = OP_ORASSIGN; | |
157 | toketype = ASSIGNOP; | |
158 | } | |
159 | return toketype; | |
160 | } | |
161 | ||
8990e307 | 162 | static void |
8ac85365 | 163 | no_op(char *what, char *s) |
463ee0b2 | 164 | { |
748a9306 | 165 | char *oldbp = bufptr; |
fd049845 | 166 | bool is_first = (oldbufptr == linestart); |
68dc0745 | 167 | |
8990e307 | 168 | bufptr = s; |
46fc3d4c | 169 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 170 | if (is_first) |
a0d0e21e | 171 | warn("\t(Missing semicolon on previous line?)\n"); |
748a9306 LW |
172 | else if (oldoldbufptr && isIDFIRST(*oldoldbufptr)) { |
173 | char *t; | |
174 | for (t = oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ; | |
175 | if (t < bufptr && isSPACE(*t)) | |
176 | warn("\t(Do you need to predeclare %.*s?)\n", | |
177 | t - oldoldbufptr, oldoldbufptr); | |
178 | ||
179 | } | |
180 | else | |
181 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
182 | bufptr = oldbp; | |
8990e307 LW |
183 | } |
184 | ||
185 | static void | |
8ac85365 | 186 | missingterm(char *s) |
8990e307 LW |
187 | { |
188 | char tmpbuf[3]; | |
189 | char q; | |
190 | if (s) { | |
191 | char *nl = strrchr(s,'\n'); | |
a868473f | 192 | if (nl) |
8990e307 LW |
193 | *nl = '\0'; |
194 | } | |
195 | else if (multi_close < 32 || multi_close == 127) { | |
196 | *tmpbuf = '^'; | |
bbce6d69 | 197 | tmpbuf[1] = toCTRL(multi_close); |
8990e307 LW |
198 | s = "\\n"; |
199 | tmpbuf[2] = '\0'; | |
200 | s = tmpbuf; | |
201 | } | |
202 | else { | |
203 | *tmpbuf = multi_close; | |
204 | tmpbuf[1] = '\0'; | |
205 | s = tmpbuf; | |
206 | } | |
207 | q = strchr(s,'"') ? '\'' : '"'; | |
208 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 209 | } |
79072805 LW |
210 | |
211 | void | |
8ac85365 | 212 | deprecate(char *s) |
a0d0e21e LW |
213 | { |
214 | if (dowarn) | |
215 | warn("Use of %s is deprecated", s); | |
216 | } | |
217 | ||
218 | static void | |
8ac85365 | 219 | depcom(void) |
a0d0e21e LW |
220 | { |
221 | deprecate("comma-less variable list"); | |
222 | } | |
223 | ||
a868473f NIS |
224 | #ifdef WIN32 |
225 | ||
226 | static I32 | |
227 | win32_textfilter(int idx, SV *sv, int maxlen) | |
228 | { | |
229 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
230 | if (count > 0 && !maxlen) | |
231 | win32_strip_return(sv); | |
232 | return count; | |
233 | } | |
234 | #endif | |
235 | ||
236 | ||
a0d0e21e | 237 | void |
8ac85365 | 238 | lex_start(SV *line) |
79072805 | 239 | { |
0f15f207 | 240 | dTHR; |
8990e307 LW |
241 | char *s; |
242 | STRLEN len; | |
243 | ||
55497cff | 244 | SAVEI32(lex_dojoin); |
245 | SAVEI32(lex_brackets); | |
246 | SAVEI32(lex_fakebrack); | |
247 | SAVEI32(lex_casemods); | |
248 | SAVEI32(lex_starts); | |
249 | SAVEI32(lex_state); | |
a0d0e21e | 250 | SAVESPTR(lex_inpat); |
55497cff | 251 | SAVEI32(lex_inwhat); |
252 | SAVEI16(curcop->cop_line); | |
85e6fe83 LW |
253 | SAVEPPTR(bufptr); |
254 | SAVEPPTR(bufend); | |
255 | SAVEPPTR(oldbufptr); | |
256 | SAVEPPTR(oldoldbufptr); | |
fd049845 | 257 | SAVEPPTR(linestart); |
463ee0b2 | 258 | SAVESPTR(linestr); |
85e6fe83 | 259 | SAVEPPTR(lex_brackstack); |
a0d0e21e | 260 | SAVEPPTR(lex_casestack); |
6d5fb7e3 | 261 | SAVEDESTRUCTOR(restore_rsfp, rsfp); |
49d8d3a1 MB |
262 | SAVESPTR(lex_stuff); |
263 | SAVEI32(lex_defer); | |
264 | SAVESPTR(lex_repl); | |
265 | SAVEDESTRUCTOR(restore_expect, tokenbuf + expect); /* encode as pointer */ | |
266 | SAVEDESTRUCTOR(restore_lex_expect, tokenbuf + expect); | |
463ee0b2 | 267 | |
79072805 LW |
268 | lex_state = LEX_NORMAL; |
269 | lex_defer = 0; | |
8990e307 | 270 | expect = XSTATE; |
79072805 LW |
271 | lex_brackets = 0; |
272 | lex_fakebrack = 0; | |
8990e307 | 273 | New(899, lex_brackstack, 120, char); |
a0d0e21e | 274 | New(899, lex_casestack, 12, char); |
8990e307 | 275 | SAVEFREEPV(lex_brackstack); |
a0d0e21e | 276 | SAVEFREEPV(lex_casestack); |
79072805 | 277 | lex_casemods = 0; |
a0d0e21e | 278 | *lex_casestack = '\0'; |
79072805 LW |
279 | lex_dojoin = 0; |
280 | lex_starts = 0; | |
79072805 | 281 | lex_stuff = Nullsv; |
79072805 LW |
282 | lex_repl = Nullsv; |
283 | lex_inpat = 0; | |
284 | lex_inwhat = 0; | |
8990e307 LW |
285 | linestr = line; |
286 | if (SvREADONLY(linestr)) | |
287 | linestr = sv_2mortal(newSVsv(linestr)); | |
288 | s = SvPV(linestr, len); | |
289 | if (len && s[len-1] != ';') { | |
a0d0e21e | 290 | if (!(SvFLAGS(linestr) & SVs_TEMP)) |
8990e307 LW |
291 | linestr = sv_2mortal(newSVsv(linestr)); |
292 | sv_catpvn(linestr, "\n;", 2); | |
293 | } | |
294 | SvTEMP_off(linestr); | |
fd049845 | 295 | oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr); |
79072805 | 296 | bufend = bufptr + SvCUR(linestr); |
c07a80fd | 297 | SvREFCNT_dec(rs); |
298 | rs = newSVpv("\n", 1); | |
8990e307 | 299 | rsfp = 0; |
79072805 | 300 | } |
a687059c | 301 | |
463ee0b2 | 302 | void |
8ac85365 | 303 | lex_end(void) |
463ee0b2 | 304 | { |
6ca21dd3 | 305 | doextract = FALSE; |
463ee0b2 LW |
306 | } |
307 | ||
308 | static void | |
8ac85365 | 309 | restore_rsfp(void *f) |
6d5fb7e3 | 310 | { |
760ac839 | 311 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 312 | |
760ac839 LW |
313 | if (rsfp == PerlIO_stdin()) |
314 | PerlIO_clearerr(rsfp); | |
a5f75d66 | 315 | else if (rsfp && (rsfp != fp)) |
760ac839 | 316 | PerlIO_close(rsfp); |
6d5fb7e3 CS |
317 | rsfp = fp; |
318 | } | |
319 | ||
320 | static void | |
49d8d3a1 MB |
321 | restore_expect(e) |
322 | void *e; | |
323 | { | |
324 | /* a safe way to store a small integer in a pointer */ | |
325 | expect = (expectation)((char *)e - tokenbuf); | |
326 | } | |
327 | ||
328 | static void | |
329 | restore_lex_expect(e) | |
330 | void *e; | |
331 | { | |
332 | /* a safe way to store a small integer in a pointer */ | |
333 | lex_expect = (expectation)((char *)e - tokenbuf); | |
334 | } | |
335 | ||
336 | static void | |
8ac85365 | 337 | incline(char *s) |
463ee0b2 | 338 | { |
0f15f207 | 339 | dTHR; |
463ee0b2 LW |
340 | char *t; |
341 | char *n; | |
342 | char ch; | |
343 | int sawline = 0; | |
344 | ||
345 | curcop->cop_line++; | |
346 | if (*s++ != '#') | |
347 | return; | |
348 | while (*s == ' ' || *s == '\t') s++; | |
349 | if (strnEQ(s, "line ", 5)) { | |
350 | s += 5; | |
351 | sawline = 1; | |
352 | } | |
353 | if (!isDIGIT(*s)) | |
354 | return; | |
355 | n = s; | |
356 | while (isDIGIT(*s)) | |
357 | s++; | |
358 | while (*s == ' ' || *s == '\t') | |
359 | s++; | |
360 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
361 | s++; | |
362 | else { | |
363 | if (!sawline) | |
364 | return; /* false alarm */ | |
365 | for (t = s; !isSPACE(*t); t++) ; | |
366 | } | |
367 | ch = *t; | |
368 | *t = '\0'; | |
369 | if (t - s > 0) | |
370 | curcop->cop_filegv = gv_fetchfile(s); | |
371 | else | |
372 | curcop->cop_filegv = gv_fetchfile(origfilename); | |
373 | *t = ch; | |
374 | curcop->cop_line = atoi(n)-1; | |
375 | } | |
376 | ||
8990e307 | 377 | static char * |
8ac85365 | 378 | skipspace(register char *s) |
a687059c | 379 | { |
11343788 | 380 | dTHR; |
85e6fe83 | 381 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
463ee0b2 LW |
382 | while (s < bufend && (*s == ' ' || *s == '\t')) |
383 | s++; | |
384 | return s; | |
385 | } | |
386 | for (;;) { | |
fd049845 | 387 | STRLEN prevlen; |
463ee0b2 LW |
388 | while (s < bufend && isSPACE(*s)) |
389 | s++; | |
390 | if (s < bufend && *s == '#') { | |
391 | while (s < bufend && *s != '\n') | |
392 | s++; | |
393 | if (s < bufend) | |
394 | s++; | |
395 | } | |
a0d0e21e | 396 | if (s < bufend || !rsfp || lex_state != LEX_NORMAL) |
463ee0b2 | 397 | return s; |
fd049845 | 398 | if ((s = filter_gets(linestr, rsfp, (prevlen = SvCUR(linestr)))) == Nullch) { |
a0d0e21e | 399 | if (minus_n || minus_p) { |
08e9d68e DD |
400 | sv_setpv(linestr,minus_p ? |
401 | ";}continue{print or die qq(-p destination: $!\\n)" : | |
402 | ""); | |
a0d0e21e LW |
403 | sv_catpv(linestr,";}"); |
404 | minus_n = minus_p = 0; | |
405 | } | |
406 | else | |
407 | sv_setpv(linestr,";"); | |
fd049845 | 408 | oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr); |
a0d0e21e LW |
409 | bufend = SvPVX(linestr) + SvCUR(linestr); |
410 | if (preprocess && !in_eval) | |
3028581b | 411 | (void)PerlProc_pclose(rsfp); |
760ac839 LW |
412 | else if ((PerlIO*)rsfp == PerlIO_stdin()) |
413 | PerlIO_clearerr(rsfp); | |
8990e307 | 414 | else |
760ac839 | 415 | (void)PerlIO_close(rsfp); |
90248788 TB |
416 | if (e_fp == rsfp) |
417 | e_fp = Nullfp; | |
8990e307 | 418 | rsfp = Nullfp; |
463ee0b2 LW |
419 | return s; |
420 | } | |
fd049845 | 421 | linestart = bufptr = s + prevlen; |
422 | bufend = s + SvCUR(linestr); | |
423 | s = bufptr; | |
a0d0e21e | 424 | incline(s); |
84902520 | 425 | if (PERLDB_LINE && curstash != debstash) { |
8990e307 LW |
426 | SV *sv = NEWSV(85,0); |
427 | ||
428 | sv_upgrade(sv, SVt_PVMG); | |
fd049845 | 429 | sv_setpvn(sv,bufptr,bufend-bufptr); |
8990e307 LW |
430 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); |
431 | } | |
463ee0b2 | 432 | } |
a687059c | 433 | } |
378cc40b | 434 | |
8990e307 | 435 | static void |
8ac85365 | 436 | check_uni(void) { |
2f3197b3 LW |
437 | char *s; |
438 | char ch; | |
a0d0e21e | 439 | char *t; |
2f3197b3 LW |
440 | |
441 | if (oldoldbufptr != last_uni) | |
442 | return; | |
443 | while (isSPACE(*last_uni)) | |
444 | last_uni++; | |
e334a159 | 445 | for (s = last_uni; isALNUM(*s) || *s == '-'; s++) ; |
a0d0e21e LW |
446 | if ((t = strchr(s, '(')) && t < bufptr) |
447 | return; | |
2f3197b3 LW |
448 | ch = *s; |
449 | *s = '\0'; | |
450 | warn("Warning: Use of \"%s\" without parens is ambiguous", last_uni); | |
451 | *s = ch; | |
452 | } | |
453 | ||
ffed7fef LW |
454 | #ifdef CRIPPLED_CC |
455 | ||
456 | #undef UNI | |
ffed7fef | 457 | #define UNI(f) return uni(f,s) |
ffed7fef | 458 | |
8990e307 | 459 | static int |
8ac85365 | 460 | uni(I32 f, char *s) |
ffed7fef LW |
461 | { |
462 | yylval.ival = f; | |
79072805 | 463 | expect = XTERM; |
ffed7fef | 464 | bufptr = s; |
2f3197b3 | 465 | last_uni = oldbufptr; |
a0d0e21e | 466 | last_lop_op = f; |
ffed7fef LW |
467 | if (*s == '(') |
468 | return FUNC1; | |
469 | s = skipspace(s); | |
470 | if (*s == '(') | |
471 | return FUNC1; | |
472 | else | |
473 | return UNIOP; | |
474 | } | |
475 | ||
a0d0e21e LW |
476 | #endif /* CRIPPLED_CC */ |
477 | ||
478 | #define LOP(f,x) return lop(f,x,s) | |
479 | ||
8990e307 | 480 | static I32 |
0fa19009 | 481 | lop(I32 f, expectation x, char *s) |
ffed7fef | 482 | { |
0f15f207 | 483 | dTHR; |
79072805 | 484 | yylval.ival = f; |
35c8bce7 | 485 | CLINE; |
a0d0e21e | 486 | expect = x; |
79072805 | 487 | bufptr = s; |
8990e307 LW |
488 | last_lop = oldbufptr; |
489 | last_lop_op = f; | |
a0d0e21e LW |
490 | if (nexttoke) |
491 | return LSTOP; | |
79072805 LW |
492 | if (*s == '(') |
493 | return FUNC; | |
494 | s = skipspace(s); | |
495 | if (*s == '(') | |
496 | return FUNC; | |
497 | else | |
498 | return LSTOP; | |
499 | } | |
500 | ||
8990e307 | 501 | static void |
8ac85365 | 502 | force_next(I32 type) |
79072805 LW |
503 | { |
504 | nexttype[nexttoke] = type; | |
505 | nexttoke++; | |
506 | if (lex_state != LEX_KNOWNEXT) { | |
507 | lex_defer = lex_state; | |
463ee0b2 | 508 | lex_expect = expect; |
79072805 LW |
509 | lex_state = LEX_KNOWNEXT; |
510 | } | |
511 | } | |
512 | ||
8990e307 | 513 | static char * |
15f0808c | 514 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 515 | { |
463ee0b2 LW |
516 | register char *s; |
517 | STRLEN len; | |
518 | ||
519 | start = skipspace(start); | |
520 | s = start; | |
a0d0e21e LW |
521 | if (isIDFIRST(*s) || |
522 | (allow_pack && *s == ':') || | |
15f0808c | 523 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 524 | { |
8903cb82 | 525 | s = scan_word(s, tokenbuf, sizeof tokenbuf, allow_pack, &len); |
463ee0b2 LW |
526 | if (check_keyword && keyword(tokenbuf, len)) |
527 | return start; | |
528 | if (token == METHOD) { | |
529 | s = skipspace(s); | |
530 | if (*s == '(') | |
531 | expect = XTERM; | |
532 | else { | |
533 | expect = XOPERATOR; | |
534 | force_next(')'); | |
535 | force_next('('); | |
536 | } | |
79072805 | 537 | } |
463ee0b2 | 538 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(tokenbuf,0)); |
8990e307 | 539 | nextval[nexttoke].opval->op_private |= OPpCONST_BARE; |
79072805 LW |
540 | force_next(token); |
541 | } | |
542 | return s; | |
543 | } | |
544 | ||
8990e307 | 545 | static void |
8ac85365 | 546 | force_ident(register char *s, int kind) |
79072805 LW |
547 | { |
548 | if (s && *s) { | |
11343788 MB |
549 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
550 | nextval[nexttoke].opval = o; | |
79072805 | 551 | force_next(WORD); |
748a9306 | 552 | if (kind) { |
e858de61 | 553 | dTHR; /* just for in_eval */ |
11343788 | 554 | o->op_private = OPpCONST_ENTERED; |
55497cff | 555 | /* XXX see note in pp_entereval() for why we forgo typo |
556 | warnings if the symbol must be introduced in an eval. | |
557 | GSAR 96-10-12 */ | |
93233ece | 558 | gv_fetchpv(s, in_eval ? (GV_ADDMULTI | 8) : TRUE, |
a0d0e21e LW |
559 | kind == '$' ? SVt_PV : |
560 | kind == '@' ? SVt_PVAV : | |
561 | kind == '%' ? SVt_PVHV : | |
562 | SVt_PVGV | |
563 | ); | |
748a9306 | 564 | } |
79072805 LW |
565 | } |
566 | } | |
567 | ||
89bfa8cd | 568 | static char * |
8ac85365 | 569 | force_version(char *s) |
89bfa8cd | 570 | { |
571 | OP *version = Nullop; | |
572 | ||
573 | s = skipspace(s); | |
574 | ||
575 | /* default VERSION number -- GBARR */ | |
576 | ||
577 | if(isDIGIT(*s)) { | |
578 | char *d; | |
579 | int c; | |
55497cff | 580 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 581 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
582 | s = scan_num(s); | |
583 | /* real VERSION number -- GBARR */ | |
584 | version = yylval.opval; | |
585 | } | |
586 | } | |
587 | ||
588 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
589 | nextval[nexttoke].opval = version; | |
590 | force_next(WORD); | |
591 | ||
592 | return (s); | |
593 | } | |
594 | ||
8990e307 | 595 | static SV * |
8ac85365 | 596 | q(SV *sv) |
79072805 LW |
597 | { |
598 | register char *s; | |
599 | register char *send; | |
600 | register char *d; | |
463ee0b2 | 601 | STRLEN len; |
79072805 LW |
602 | |
603 | if (!SvLEN(sv)) | |
604 | return sv; | |
605 | ||
a0d0e21e | 606 | s = SvPV_force(sv, len); |
748a9306 LW |
607 | if (SvIVX(sv) == -1) |
608 | return sv; | |
463ee0b2 | 609 | send = s + len; |
79072805 LW |
610 | while (s < send && *s != '\\') |
611 | s++; | |
612 | if (s == send) | |
613 | return sv; | |
614 | d = s; | |
79072805 LW |
615 | while (s < send) { |
616 | if (*s == '\\') { | |
a0d0e21e | 617 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
618 | s++; /* all that, just for this */ |
619 | } | |
620 | *d++ = *s++; | |
621 | } | |
622 | *d = '\0'; | |
463ee0b2 | 623 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
624 | |
625 | return sv; | |
626 | } | |
627 | ||
8990e307 | 628 | static I32 |
8ac85365 | 629 | sublex_start(void) |
79072805 LW |
630 | { |
631 | register I32 op_type = yylval.ival; | |
79072805 LW |
632 | |
633 | if (op_type == OP_NULL) { | |
634 | yylval.opval = lex_op; | |
635 | lex_op = Nullop; | |
636 | return THING; | |
637 | } | |
638 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
1c9c84df CS |
639 | SV *sv = q(lex_stuff); |
640 | STRLEN len; | |
641 | char *p = SvPV(sv, len); | |
642 | yylval.opval = (OP*)newSVOP(op_type, 0, newSVpv(p, len)); | |
643 | SvREFCNT_dec(sv); | |
79072805 LW |
644 | lex_stuff = Nullsv; |
645 | return THING; | |
646 | } | |
647 | ||
55497cff | 648 | sublex_info.super_state = lex_state; |
649 | sublex_info.sub_inwhat = op_type; | |
650 | sublex_info.sub_op = lex_op; | |
651 | lex_state = LEX_INTERPPUSH; | |
652 | ||
653 | expect = XTERM; | |
654 | if (lex_op) { | |
655 | yylval.opval = lex_op; | |
656 | lex_op = Nullop; | |
657 | return PMFUNC; | |
658 | } | |
659 | else | |
660 | return FUNC; | |
661 | } | |
662 | ||
663 | static I32 | |
8ac85365 | 664 | sublex_push(void) |
55497cff | 665 | { |
0f15f207 | 666 | dTHR; |
f46d017c | 667 | ENTER; |
55497cff | 668 | |
669 | lex_state = sublex_info.super_state; | |
670 | SAVEI32(lex_dojoin); | |
671 | SAVEI32(lex_brackets); | |
672 | SAVEI32(lex_fakebrack); | |
673 | SAVEI32(lex_casemods); | |
674 | SAVEI32(lex_starts); | |
675 | SAVEI32(lex_state); | |
a0d0e21e | 676 | SAVESPTR(lex_inpat); |
55497cff | 677 | SAVEI32(lex_inwhat); |
678 | SAVEI16(curcop->cop_line); | |
85e6fe83 LW |
679 | SAVEPPTR(bufptr); |
680 | SAVEPPTR(oldbufptr); | |
681 | SAVEPPTR(oldoldbufptr); | |
fd049845 | 682 | SAVEPPTR(linestart); |
79072805 | 683 | SAVESPTR(linestr); |
85e6fe83 | 684 | SAVEPPTR(lex_brackstack); |
a0d0e21e | 685 | SAVEPPTR(lex_casestack); |
79072805 LW |
686 | |
687 | linestr = lex_stuff; | |
688 | lex_stuff = Nullsv; | |
689 | ||
fd049845 | 690 | bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr); |
79072805 | 691 | bufend += SvCUR(linestr); |
8990e307 | 692 | SAVEFREESV(linestr); |
79072805 LW |
693 | |
694 | lex_dojoin = FALSE; | |
695 | lex_brackets = 0; | |
696 | lex_fakebrack = 0; | |
8990e307 | 697 | New(899, lex_brackstack, 120, char); |
a0d0e21e | 698 | New(899, lex_casestack, 12, char); |
8990e307 | 699 | SAVEFREEPV(lex_brackstack); |
a0d0e21e | 700 | SAVEFREEPV(lex_casestack); |
79072805 | 701 | lex_casemods = 0; |
a0d0e21e | 702 | *lex_casestack = '\0'; |
79072805 LW |
703 | lex_starts = 0; |
704 | lex_state = LEX_INTERPCONCAT; | |
705 | curcop->cop_line = multi_start; | |
706 | ||
55497cff | 707 | lex_inwhat = sublex_info.sub_inwhat; |
708 | if (lex_inwhat == OP_MATCH || lex_inwhat == OP_SUBST) | |
709 | lex_inpat = sublex_info.sub_op; | |
79072805 | 710 | else |
55497cff | 711 | lex_inpat = Nullop; |
79072805 | 712 | |
55497cff | 713 | return '('; |
79072805 LW |
714 | } |
715 | ||
8990e307 | 716 | static I32 |
8ac85365 | 717 | sublex_done(void) |
79072805 LW |
718 | { |
719 | if (!lex_starts++) { | |
720 | expect = XOPERATOR; | |
93a17b20 | 721 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0)); |
79072805 LW |
722 | return THING; |
723 | } | |
724 | ||
725 | if (lex_casemods) { /* oops, we've got some unbalanced parens */ | |
726 | lex_state = LEX_INTERPCASEMOD; | |
727 | return yylex(); | |
728 | } | |
729 | ||
79072805 LW |
730 | /* Is there a right-hand side to take care of? */ |
731 | if (lex_repl && (lex_inwhat == OP_SUBST || lex_inwhat == OP_TRANS)) { | |
732 | linestr = lex_repl; | |
733 | lex_inpat = 0; | |
fd049845 | 734 | bufend = bufptr = oldbufptr = oldoldbufptr = linestart = SvPVX(linestr); |
79072805 | 735 | bufend += SvCUR(linestr); |
8990e307 | 736 | SAVEFREESV(linestr); |
79072805 LW |
737 | lex_dojoin = FALSE; |
738 | lex_brackets = 0; | |
739 | lex_fakebrack = 0; | |
740 | lex_casemods = 0; | |
a0d0e21e | 741 | *lex_casestack = '\0'; |
79072805 LW |
742 | lex_starts = 0; |
743 | if (SvCOMPILED(lex_repl)) { | |
744 | lex_state = LEX_INTERPNORMAL; | |
745 | lex_starts++; | |
746 | } | |
747 | else | |
748 | lex_state = LEX_INTERPCONCAT; | |
749 | lex_repl = Nullsv; | |
750 | return ','; | |
ffed7fef LW |
751 | } |
752 | else { | |
f46d017c | 753 | LEAVE; |
463ee0b2 | 754 | bufend = SvPVX(linestr); |
79072805 LW |
755 | bufend += SvCUR(linestr); |
756 | expect = XOPERATOR; | |
757 | return ')'; | |
ffed7fef LW |
758 | } |
759 | } | |
760 | ||
02aa26ce NT |
761 | /* |
762 | scan_const | |
763 | ||
764 | Extracts a pattern, double-quoted string, or transliteration. This | |
765 | is terrifying code. | |
766 | ||
767 | It looks at lex_inwhat and lex_inpat to find out whether it's | |
768 | processing a pattern (lex_inpat is true), a transliteration | |
769 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. | |
770 | ||
9b599b2a GS |
771 | Returns a pointer to the character scanned up to. Iff this is |
772 | advanced from the start pointer supplied (ie if anything was | |
773 | successfully parsed), will leave an OP for the substring scanned | |
774 | in yylval. Caller must intuit reason for not parsing further | |
775 | by looking at the next characters herself. | |
776 | ||
02aa26ce NT |
777 | In patterns: |
778 | backslashes: | |
779 | double-quoted style: \r and \n | |
780 | regexp special ones: \D \s | |
781 | constants: \x3 | |
782 | backrefs: \1 (deprecated in substitution replacements) | |
783 | case and quoting: \U \Q \E | |
784 | stops on @ and $, but not for $ as tail anchor | |
785 | ||
786 | In transliterations: | |
787 | characters are VERY literal, except for - not at the start or end | |
788 | of the string, which indicates a range. scan_const expands the | |
789 | range to the full set of intermediate characters. | |
790 | ||
791 | In double-quoted strings: | |
792 | backslashes: | |
793 | double-quoted style: \r and \n | |
794 | constants: \x3 | |
795 | backrefs: \1 (deprecated) | |
796 | case and quoting: \U \Q \E | |
797 | stops on @ and $ | |
798 | ||
799 | scan_const does *not* construct ops to handle interpolated strings. | |
800 | It stops processing as soon as it finds an embedded $ or @ variable | |
801 | and leaves it to the caller to work out what's going on. | |
802 | ||
803 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
804 | ||
805 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
806 | it's a tail anchor if $ is the last thing in the string, or if it's | |
807 | followed by one of ")| \n\t" | |
808 | ||
809 | \1 (backreferences) are turned into $1 | |
810 | ||
811 | The structure of the code is | |
812 | while (there's a character to process) { | |
813 | handle transliteration ranges | |
814 | skip regexp comments | |
815 | skip # initiated comments in //x patterns | |
816 | check for embedded @foo | |
817 | check for embedded scalars | |
818 | if (backslash) { | |
819 | leave intact backslashes from leave (below) | |
820 | deprecate \1 in strings and sub replacements | |
821 | handle string-changing backslashes \l \U \Q \E, etc. | |
822 | switch (what was escaped) { | |
823 | handle - in a transliteration (becomes a literal -) | |
824 | handle \132 octal characters | |
825 | handle 0x15 hex characters | |
826 | handle \cV (control V) | |
827 | handle printf backslashes (\f, \r, \n, etc) | |
828 | } (end switch) | |
829 | } (end if backslash) | |
830 | } (end while character to read) | |
831 | ||
832 | */ | |
833 | ||
8990e307 | 834 | static char * |
8ac85365 | 835 | scan_const(char *start) |
79072805 | 836 | { |
02aa26ce NT |
837 | register char *send = bufend; /* end of the constant */ |
838 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ | |
839 | register char *s = start; /* start of the constant */ | |
840 | register char *d = SvPVX(sv); /* destination for copies */ | |
841 | bool dorange = FALSE; /* are we in a translit range? */ | |
842 | I32 len; /* ? */ | |
843 | ||
9b599b2a | 844 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 845 | char *leaveit = |
79072805 | 846 | lex_inpat |
748a9306 | 847 | ? "\\.^$@AGZdDwWsSbB+*?|()-nrtfeaxc0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 848 | : ""; |
79072805 LW |
849 | |
850 | while (s < send || dorange) { | |
02aa26ce | 851 | /* get transliterations out of the way (they're most literal) */ |
79072805 | 852 | if (lex_inwhat == OP_TRANS) { |
02aa26ce | 853 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 854 | if (dorange) { |
02aa26ce NT |
855 | I32 i; /* current expanded character */ |
856 | I32 max; /* last character in range */ | |
857 | ||
858 | i = d - SvPVX(sv); /* remember current offset */ | |
859 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
860 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
861 | d -= 2; /* eat the first char and the - */ | |
862 | ||
863 | max = (U8)d[1]; /* last char in range */ | |
864 | ||
91b7def8 | 865 | for (i = (U8)*d; i <= max; i++) |
79072805 | 866 | *d++ = i; |
02aa26ce NT |
867 | |
868 | /* mark the range as done, and continue */ | |
79072805 LW |
869 | dorange = FALSE; |
870 | continue; | |
871 | } | |
02aa26ce NT |
872 | |
873 | /* range begins (ignore - as first or last char) */ | |
79072805 LW |
874 | else if (*s == '-' && s+1 < send && s != start) { |
875 | dorange = TRUE; | |
876 | s++; | |
877 | } | |
878 | } | |
02aa26ce NT |
879 | |
880 | /* if we get here, we're not doing a transliteration */ | |
881 | ||
882 | /* skip for regexp comments /(?#comment)/ */ | |
cc6b7395 IZ |
883 | else if (*s == '(' && lex_inpat && s[1] == '?') { |
884 | if (s[2] == '#') { | |
885 | while (s < send && *s != ')') | |
886 | *d++ = *s++; | |
887 | } else if (s[2] == '{') { /* This should march regcomp.c */ | |
888 | I32 count = 1; | |
889 | char *regparse = s + 3; | |
890 | char c; | |
891 | ||
892 | while (count && (c = *regparse)) { | |
893 | if (c == '\\' && regparse[1]) | |
894 | regparse++; | |
895 | else if (c == '{') | |
896 | count++; | |
897 | else if (c == '}') | |
898 | count--; | |
899 | regparse++; | |
900 | } | |
901 | if (*regparse == ')') | |
902 | regparse++; | |
903 | else | |
904 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); | |
905 | while (s < regparse && *s != ')') | |
906 | *d++ = *s++; | |
907 | } | |
748a9306 | 908 | } |
02aa26ce NT |
909 | |
910 | /* likewise skip #-initiated comments in //x patterns */ | |
748a9306 LW |
911 | else if (*s == '#' && lex_inpat && |
912 | ((PMOP*)lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
913 | while (s+1 < send && *s != '\n') | |
914 | *d++ = *s++; | |
915 | } | |
02aa26ce NT |
916 | |
917 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
a0d0e21e | 918 | else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1]))) |
79072805 | 919 | break; |
02aa26ce NT |
920 | |
921 | /* check for embedded scalars. only stop if we're sure it's a | |
922 | variable. | |
923 | */ | |
79072805 LW |
924 | else if (*s == '$') { |
925 | if (!lex_inpat) /* not a regexp, so $ must be var */ | |
926 | break; | |
c277df42 | 927 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
928 | break; /* in regexp, $ might be tail anchor */ |
929 | } | |
02aa26ce NT |
930 | |
931 | /* backslashes */ | |
79072805 LW |
932 | if (*s == '\\' && s+1 < send) { |
933 | s++; | |
02aa26ce NT |
934 | |
935 | /* some backslashes we leave behind */ | |
72aaf631 | 936 | if (*s && strchr(leaveit, *s)) { |
79072805 LW |
937 | *d++ = '\\'; |
938 | *d++ = *s++; | |
939 | continue; | |
940 | } | |
02aa26ce NT |
941 | |
942 | /* deprecate \1 in strings and substitution replacements */ | |
79072805 | 943 | if (lex_inwhat == OP_SUBST && !lex_inpat && |
a0d0e21e | 944 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 945 | { |
a0d0e21e LW |
946 | if (dowarn) |
947 | warn("\\%c better written as $%c", *s, *s); | |
79072805 LW |
948 | *--s = '$'; |
949 | break; | |
950 | } | |
02aa26ce NT |
951 | |
952 | /* string-change backslash escapes */ | |
a0d0e21e | 953 | if (lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
954 | --s; |
955 | break; | |
956 | } | |
02aa26ce NT |
957 | |
958 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 959 | switch (*s) { |
02aa26ce NT |
960 | |
961 | /* quoted - in transliterations */ | |
79072805 LW |
962 | case '-': |
963 | if (lex_inwhat == OP_TRANS) { | |
964 | *d++ = *s++; | |
965 | continue; | |
966 | } | |
967 | /* FALL THROUGH */ | |
02aa26ce | 968 | /* default action is to copy the quoted character */ |
79072805 LW |
969 | default: |
970 | *d++ = *s++; | |
971 | continue; | |
02aa26ce NT |
972 | |
973 | /* \132 indicates an octal constant */ | |
79072805 LW |
974 | case '0': case '1': case '2': case '3': |
975 | case '4': case '5': case '6': case '7': | |
976 | *d++ = scan_oct(s, 3, &len); | |
977 | s += len; | |
978 | continue; | |
02aa26ce NT |
979 | |
980 | /* \x24 indicates a hex constant */ | |
79072805 LW |
981 | case 'x': |
982 | *d++ = scan_hex(++s, 2, &len); | |
983 | s += len; | |
984 | continue; | |
02aa26ce NT |
985 | |
986 | /* \c is a control character */ | |
79072805 LW |
987 | case 'c': |
988 | s++; | |
bbce6d69 | 989 | len = *s++; |
990 | *d++ = toCTRL(len); | |
79072805 | 991 | continue; |
02aa26ce NT |
992 | |
993 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
994 | case 'b': |
995 | *d++ = '\b'; | |
996 | break; | |
997 | case 'n': | |
998 | *d++ = '\n'; | |
999 | break; | |
1000 | case 'r': | |
1001 | *d++ = '\r'; | |
1002 | break; | |
1003 | case 'f': | |
1004 | *d++ = '\f'; | |
1005 | break; | |
1006 | case 't': | |
1007 | *d++ = '\t'; | |
1008 | break; | |
1009 | case 'e': | |
1010 | *d++ = '\033'; | |
1011 | break; | |
1012 | case 'a': | |
1013 | *d++ = '\007'; | |
1014 | break; | |
02aa26ce NT |
1015 | } /* end switch */ |
1016 | ||
79072805 LW |
1017 | s++; |
1018 | continue; | |
02aa26ce NT |
1019 | } /* end if (backslash) */ |
1020 | ||
79072805 | 1021 | *d++ = *s++; |
02aa26ce NT |
1022 | } /* while loop to process each character */ |
1023 | ||
1024 | /* terminate the string and set up the sv */ | |
79072805 | 1025 | *d = '\0'; |
463ee0b2 | 1026 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1027 | SvPOK_on(sv); |
1028 | ||
02aa26ce | 1029 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1030 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1031 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1032 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1033 | } |
02aa26ce | 1034 | |
9b599b2a | 1035 | /* return the substring (via yylval) only if we parsed anything */ |
79072805 LW |
1036 | if (s > bufptr) |
1037 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); | |
1038 | else | |
8990e307 | 1039 | SvREFCNT_dec(sv); |
79072805 LW |
1040 | return s; |
1041 | } | |
1042 | ||
1043 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
8990e307 | 1044 | static int |
8ac85365 | 1045 | intuit_more(register char *s) |
79072805 LW |
1046 | { |
1047 | if (lex_brackets) | |
1048 | return TRUE; | |
1049 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1050 | return TRUE; | |
1051 | if (*s != '{' && *s != '[') | |
1052 | return FALSE; | |
1053 | if (!lex_inpat) | |
1054 | return TRUE; | |
1055 | ||
1056 | /* In a pattern, so maybe we have {n,m}. */ | |
1057 | if (*s == '{') { | |
1058 | s++; | |
1059 | if (!isDIGIT(*s)) | |
1060 | return TRUE; | |
1061 | while (isDIGIT(*s)) | |
1062 | s++; | |
1063 | if (*s == ',') | |
1064 | s++; | |
1065 | while (isDIGIT(*s)) | |
1066 | s++; | |
1067 | if (*s == '}') | |
1068 | return FALSE; | |
1069 | return TRUE; | |
1070 | ||
1071 | } | |
1072 | ||
1073 | /* On the other hand, maybe we have a character class */ | |
1074 | ||
1075 | s++; | |
1076 | if (*s == ']' || *s == '^') | |
1077 | return FALSE; | |
1078 | else { | |
1079 | int weight = 2; /* let's weigh the evidence */ | |
1080 | char seen[256]; | |
1081 | unsigned char un_char = 0, last_un_char; | |
93a17b20 | 1082 | char *send = strchr(s,']'); |
8903cb82 | 1083 | char tmpbuf[sizeof tokenbuf * 4]; |
79072805 LW |
1084 | |
1085 | if (!send) /* has to be an expression */ | |
1086 | return TRUE; | |
1087 | ||
1088 | Zero(seen,256,char); | |
1089 | if (*s == '$') | |
1090 | weight -= 3; | |
1091 | else if (isDIGIT(*s)) { | |
1092 | if (s[1] != ']') { | |
1093 | if (isDIGIT(s[1]) && s[2] == ']') | |
1094 | weight -= 10; | |
1095 | } | |
1096 | else | |
1097 | weight -= 100; | |
1098 | } | |
1099 | for (; s < send; s++) { | |
1100 | last_un_char = un_char; | |
1101 | un_char = (unsigned char)*s; | |
1102 | switch (*s) { | |
1103 | case '@': | |
1104 | case '&': | |
1105 | case '$': | |
1106 | weight -= seen[un_char] * 10; | |
1107 | if (isALNUM(s[1])) { | |
8903cb82 | 1108 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1109 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1110 | weight -= 100; |
1111 | else | |
1112 | weight -= 10; | |
1113 | } | |
1114 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1115 | strchr("[#!%*<>()-=",s[1])) { |
1116 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1117 | weight -= 10; |
1118 | else | |
1119 | weight -= 1; | |
1120 | } | |
1121 | break; | |
1122 | case '\\': | |
1123 | un_char = 254; | |
1124 | if (s[1]) { | |
93a17b20 | 1125 | if (strchr("wds]",s[1])) |
79072805 LW |
1126 | weight += 100; |
1127 | else if (seen['\''] || seen['"']) | |
1128 | weight += 1; | |
93a17b20 | 1129 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1130 | weight += 40; |
1131 | else if (isDIGIT(s[1])) { | |
1132 | weight += 40; | |
1133 | while (s[1] && isDIGIT(s[1])) | |
1134 | s++; | |
1135 | } | |
1136 | } | |
1137 | else | |
1138 | weight += 100; | |
1139 | break; | |
1140 | case '-': | |
1141 | if (s[1] == '\\') | |
1142 | weight += 50; | |
93a17b20 | 1143 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1144 | weight += 30; |
93a17b20 | 1145 | if (strchr("zZ79~",s[1])) |
79072805 LW |
1146 | weight += 30; |
1147 | break; | |
1148 | default: | |
93a17b20 | 1149 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1150 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1151 | char *d = tmpbuf; | |
1152 | while (isALPHA(*s)) | |
1153 | *d++ = *s++; | |
1154 | *d = '\0'; | |
1155 | if (keyword(tmpbuf, d - tmpbuf)) | |
1156 | weight -= 150; | |
1157 | } | |
1158 | if (un_char == last_un_char + 1) | |
1159 | weight += 5; | |
1160 | weight -= seen[un_char]; | |
1161 | break; | |
1162 | } | |
1163 | seen[un_char]++; | |
1164 | } | |
1165 | if (weight >= 0) /* probably a character class */ | |
1166 | return FALSE; | |
1167 | } | |
1168 | ||
1169 | return TRUE; | |
1170 | } | |
ffed7fef | 1171 | |
a0d0e21e | 1172 | static int |
8ac85365 | 1173 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1174 | { |
1175 | char *s = start + (*start == '$'); | |
8903cb82 | 1176 | char tmpbuf[sizeof tokenbuf]; |
a0d0e21e LW |
1177 | STRLEN len; |
1178 | GV* indirgv; | |
1179 | ||
1180 | if (gv) { | |
b6c543e3 | 1181 | CV *cv; |
a0d0e21e LW |
1182 | if (GvIO(gv)) |
1183 | return 0; | |
b6c543e3 IZ |
1184 | if ((cv = GvCVu(gv))) { |
1185 | char *proto = SvPVX(cv); | |
1186 | if (proto) { | |
1187 | if (*proto == ';') | |
1188 | proto++; | |
1189 | if (*proto == '*') | |
1190 | return 0; | |
1191 | } | |
1192 | } else | |
a0d0e21e LW |
1193 | gv = 0; |
1194 | } | |
8903cb82 | 1195 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e LW |
1196 | if (*start == '$') { |
1197 | if (gv || last_lop_op == OP_PRINT || isUPPER(*tokenbuf)) | |
1198 | return 0; | |
1199 | s = skipspace(s); | |
1200 | bufptr = start; | |
1201 | expect = XREF; | |
1202 | return *s == '(' ? FUNCMETH : METHOD; | |
1203 | } | |
1204 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1205 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1206 | len -= 2; | |
1207 | tmpbuf[len] = '\0'; | |
1208 | goto bare_package; | |
1209 | } | |
1210 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1211 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1212 | return 0; |
1213 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1214 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1215 | s = skipspace(s); |
55497cff | 1216 | if ((bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
1217 | return 0; /* no assumptions -- "=>" quotes bearword */ | |
c3e0f903 GS |
1218 | bare_package: |
1219 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, | |
1220 | newSVpv(tmpbuf,0)); | |
1221 | nextval[nexttoke].opval->op_private = OPpCONST_BARE; | |
a0d0e21e LW |
1222 | expect = XTERM; |
1223 | force_next(WORD); | |
1224 | bufptr = s; | |
1225 | return *s == '(' ? FUNCMETH : METHOD; | |
1226 | } | |
1227 | } | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | static char* | |
8ac85365 | 1232 | incl_perldb(void) |
a0d0e21e LW |
1233 | { |
1234 | if (perldb) { | |
5fd9e9a4 | 1235 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1236 | |
1237 | if (pdb) | |
1238 | return pdb; | |
61bb5906 | 1239 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1240 | return "BEGIN { require 'perl5db.pl' }"; |
1241 | } | |
1242 | return ""; | |
1243 | } | |
1244 | ||
1245 | ||
16d20bd9 AD |
1246 | /* Encoded script support. filter_add() effectively inserts a |
1247 | * 'pre-processing' function into the current source input stream. | |
1248 | * Note that the filter function only applies to the current source file | |
1249 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1250 | * | |
1251 | * The datasv parameter (which may be NULL) can be used to pass | |
1252 | * private data to this instance of the filter. The filter function | |
1253 | * can recover the SV using the FILTER_DATA macro and use it to | |
1254 | * store private buffers and state information. | |
1255 | * | |
1256 | * The supplied datasv parameter is upgraded to a PVIO type | |
1257 | * and the IoDIRP field is used to store the function pointer. | |
1258 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1259 | * private use must be set using malloc'd pointers. | |
1260 | */ | |
1261 | static int filter_debug = 0; | |
1262 | ||
1263 | SV * | |
8ac85365 | 1264 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1265 | { |
1266 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
1267 | filter_debug = atoi((char*)datasv); | |
1268 | return NULL; | |
1269 | } | |
1270 | if (!rsfp_filters) | |
1271 | rsfp_filters = newAV(); | |
1272 | if (!datasv) | |
8c52afec | 1273 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1274 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1275 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1276 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
1277 | if (filter_debug) | |
ff0cee69 | 1278 | warn("filter_add func %p (%s)", funcp, SvPV(datasv,na)); |
e50aee73 AD |
1279 | av_unshift(rsfp_filters, 1); |
1280 | av_store(rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1281 | return(datasv); |
1282 | } | |
1283 | ||
1284 | ||
1285 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1286 | void |
8ac85365 | 1287 | filter_del(filter_t funcp) |
16d20bd9 AD |
1288 | { |
1289 | if (filter_debug) | |
ff0cee69 | 1290 | warn("filter_del func %p", funcp); |
93965878 | 1291 | if (!rsfp_filters || AvFILLp(rsfp_filters)<0) |
16d20bd9 AD |
1292 | return; |
1293 | /* if filter is on top of stack (usual case) just pop it off */ | |
93965878 | 1294 | if (IoDIRP(FILTER_DATA(AvFILLp(rsfp_filters))) == (void*)funcp){ |
ff2faa2b | 1295 | sv_free(av_pop(rsfp_filters)); |
e50aee73 | 1296 | |
16d20bd9 AD |
1297 | return; |
1298 | } | |
1299 | /* we need to search for the correct entry and clear it */ | |
1300 | die("filter_del can only delete in reverse order (currently)"); | |
1301 | } | |
1302 | ||
1303 | ||
1304 | /* Invoke the n'th filter function for the current rsfp. */ | |
1305 | I32 | |
8ac85365 NIS |
1306 | filter_read(int idx, SV *buf_sv, int maxlen) |
1307 | ||
1308 | ||
1309 | /* 0 = read one text line */ | |
a0d0e21e | 1310 | { |
16d20bd9 AD |
1311 | filter_t funcp; |
1312 | SV *datasv = NULL; | |
e50aee73 | 1313 | |
16d20bd9 AD |
1314 | if (!rsfp_filters) |
1315 | return -1; | |
93965878 | 1316 | if (idx > AvFILLp(rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1317 | /* Provide a default input filter to make life easy. */ |
1318 | /* Note that we append to the line. This is handy. */ | |
16d20bd9 AD |
1319 | if (filter_debug) |
1320 | warn("filter_read %d: from rsfp\n", idx); | |
1321 | if (maxlen) { | |
1322 | /* Want a block */ | |
1323 | int len ; | |
1324 | int old_len = SvCUR(buf_sv) ; | |
1325 | ||
1326 | /* ensure buf_sv is large enough */ | |
1327 | SvGROW(buf_sv, old_len + maxlen) ; | |
760ac839 LW |
1328 | if ((len = PerlIO_read(rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1329 | if (PerlIO_error(rsfp)) | |
37120919 AD |
1330 | return -1; /* error */ |
1331 | else | |
1332 | return 0 ; /* end of file */ | |
1333 | } | |
16d20bd9 AD |
1334 | SvCUR_set(buf_sv, old_len + len) ; |
1335 | } else { | |
1336 | /* Want a line */ | |
37120919 | 1337 | if (sv_gets(buf_sv, rsfp, SvCUR(buf_sv)) == NULL) { |
760ac839 | 1338 | if (PerlIO_error(rsfp)) |
37120919 AD |
1339 | return -1; /* error */ |
1340 | else | |
1341 | return 0 ; /* end of file */ | |
1342 | } | |
16d20bd9 AD |
1343 | } |
1344 | return SvCUR(buf_sv); | |
1345 | } | |
1346 | /* Skip this filter slot if filter has been deleted */ | |
1347 | if ( (datasv = FILTER_DATA(idx)) == &sv_undef){ | |
1348 | if (filter_debug) | |
1349 | warn("filter_read %d: skipped (filter deleted)\n", idx); | |
1350 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1351 | } | |
1352 | /* Get function pointer hidden within datasv */ | |
1353 | funcp = (filter_t)IoDIRP(datasv); | |
1354 | if (filter_debug) | |
ff0cee69 | 1355 | warn("filter_read %d: via function %p (%s)\n", |
16d20bd9 AD |
1356 | idx, funcp, SvPV(datasv,na)); |
1357 | /* Call function. The function is expected to */ | |
1358 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1359 | /* Return: <0:error, =0:eof, >0:not eof */ |
16d20bd9 AD |
1360 | return (*funcp)(idx, buf_sv, maxlen); |
1361 | } | |
1362 | ||
1363 | static char * | |
6acef3b7 | 1364 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1365 | { |
a868473f NIS |
1366 | #ifdef WIN32FILTER |
1367 | if (!rsfp_filters) { | |
1368 | filter_add(win32_textfilter,NULL); | |
1369 | } | |
1370 | #endif | |
16d20bd9 AD |
1371 | if (rsfp_filters) { |
1372 | ||
55497cff | 1373 | if (!append) |
1374 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1375 | if (FILTER_READ(0, sv, 0) > 0) |
1376 | return ( SvPVX(sv) ) ; | |
1377 | else | |
1378 | return Nullch ; | |
1379 | } | |
1380 | else | |
fd049845 | 1381 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1382 | } |
1383 | ||
1384 | ||
748a9306 LW |
1385 | #ifdef DEBUGGING |
1386 | static char* exp_name[] = | |
a0d0e21e | 1387 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1388 | #endif |
463ee0b2 | 1389 | |
71be2cbc | 1390 | EXT int yychar; /* last token */ |
463ee0b2 | 1391 | |
02aa26ce NT |
1392 | /* |
1393 | yylex | |
1394 | ||
1395 | Works out what to call the token just pulled out of the input | |
1396 | stream. The yacc parser takes care of taking the ops we return and | |
1397 | stitching them into a tree. | |
1398 | ||
1399 | Returns: | |
1400 | PRIVATEREF | |
1401 | ||
1402 | Structure: | |
1403 | if read an identifier | |
1404 | if we're in a my declaration | |
1405 | croak if they tried to say my($foo::bar) | |
1406 | build the ops for a my() declaration | |
1407 | if it's an access to a my() variable | |
1408 | are we in a sort block? | |
1409 | croak if my($a); $a <=> $b | |
1410 | build ops for access to a my() variable | |
1411 | if in a dq string, and they've said @foo and we can't find @foo | |
1412 | croak | |
1413 | build ops for a bareword | |
1414 | if we already built the token before, use it. | |
1415 | */ | |
1416 | ||
2f3197b3 | 1417 | int |
8ac85365 | 1418 | yylex(void) |
378cc40b | 1419 | { |
11343788 | 1420 | dTHR; |
79072805 | 1421 | register char *s; |
378cc40b | 1422 | register char *d; |
79072805 | 1423 | register I32 tmp; |
463ee0b2 | 1424 | STRLEN len; |
161b471a NIS |
1425 | GV *gv = Nullgv; |
1426 | GV **gvp = 0; | |
a687059c | 1427 | |
02aa26ce | 1428 | /* check if there's an identifier for us to look at */ |
bbce6d69 | 1429 | if (pending_ident) { |
02aa26ce | 1430 | /* pit holds the identifier we read and pending_ident is reset */ |
bbce6d69 | 1431 | char pit = pending_ident; |
1432 | pending_ident = 0; | |
1433 | ||
02aa26ce NT |
1434 | /* if we're in a my(), we can't allow dynamics here. |
1435 | $foo'bar has already been turned into $foo::bar, so | |
1436 | just check for colons. | |
1437 | ||
1438 | if it's a legal name, the OP is a PADANY. | |
1439 | */ | |
bbce6d69 | 1440 | if (in_my) { |
1441 | if (strchr(tokenbuf,':')) | |
1442 | croak(no_myglob,tokenbuf); | |
02aa26ce | 1443 | |
bbce6d69 | 1444 | yylval.opval = newOP(OP_PADANY, 0); |
1445 | yylval.opval->op_targ = pad_allocmy(tokenbuf); | |
1446 | return PRIVATEREF; | |
1447 | } | |
1448 | ||
02aa26ce NT |
1449 | /* |
1450 | build the ops for accesses to a my() variable. | |
1451 | ||
1452 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1453 | then used in a comparison. This catches most, but not | |
1454 | all cases. For instance, it catches | |
1455 | sort { my($a); $a <=> $b } | |
1456 | but not | |
1457 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1458 | (although why you'd do that is anyone's guess). | |
1459 | */ | |
1460 | ||
a863c7d1 MB |
1461 | if (!strchr(tokenbuf,':')) { |
1462 | #ifdef USE_THREADS | |
54b9620d | 1463 | /* Check for single character per-thread SVs */ |
a863c7d1 | 1464 | if (tokenbuf[0] == '$' && tokenbuf[2] == '\0' |
54b9620d MB |
1465 | && !isALPHA(tokenbuf[1]) /* Rule out obvious non-threadsvs */ |
1466 | && (tmp = find_threadsv(&tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1467 | { |
2faa37cc | 1468 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1469 | yylval.opval->op_targ = tmp; |
1470 | return PRIVATEREF; | |
1471 | } | |
1472 | #endif /* USE_THREADS */ | |
1473 | if ((tmp = pad_findmy(tokenbuf)) != NOT_IN_PAD) { | |
02aa26ce | 1474 | /* if it's a sort block and they're naming $a or $b */ |
a863c7d1 MB |
1475 | if (last_lop_op == OP_SORT && |
1476 | tokenbuf[0] == '$' && | |
1477 | (tokenbuf[1] == 'a' || tokenbuf[1] == 'b') | |
1478 | && !tokenbuf[2]) | |
bbce6d69 | 1479 | { |
a863c7d1 MB |
1480 | for (d = in_eval ? oldoldbufptr : linestart; |
1481 | d < bufend && *d != '\n'; | |
1482 | d++) | |
1483 | { | |
1484 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1485 | croak("Can't use \"my %s\" in sort comparison", | |
1486 | tokenbuf); | |
1487 | } | |
bbce6d69 | 1488 | } |
1489 | } | |
bbce6d69 | 1490 | |
a863c7d1 MB |
1491 | yylval.opval = newOP(OP_PADANY, 0); |
1492 | yylval.opval->op_targ = tmp; | |
1493 | return PRIVATEREF; | |
1494 | } | |
bbce6d69 | 1495 | } |
1496 | ||
02aa26ce NT |
1497 | /* |
1498 | Whine if they've said @foo in a doublequoted string, | |
1499 | and @foo isn't a variable we can find in the symbol | |
1500 | table. | |
1501 | */ | |
bbce6d69 | 1502 | if (pit == '@' && lex_state != LEX_NORMAL && !lex_brackets) { |
1503 | GV *gv = gv_fetchpv(tokenbuf+1, FALSE, SVt_PVAV); | |
46fc3d4c | 1504 | if (!gv || ((tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
1505 | yyerror(form("In string, %s now must be written as \\%s", | |
1506 | tokenbuf, tokenbuf)); | |
bbce6d69 | 1507 | } |
1508 | ||
02aa26ce | 1509 | /* build ops for a bareword */ |
bbce6d69 | 1510 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf+1, 0)); |
1511 | yylval.opval->op_private = OPpCONST_ENTERED; | |
93233ece | 1512 | gv_fetchpv(tokenbuf+1, in_eval ? (GV_ADDMULTI | 8) : TRUE, |
bbce6d69 | 1513 | ((tokenbuf[0] == '$') ? SVt_PV |
1514 | : (tokenbuf[0] == '@') ? SVt_PVAV | |
1515 | : SVt_PVHV)); | |
1516 | return WORD; | |
1517 | } | |
1518 | ||
02aa26ce NT |
1519 | /* no identifier pending identification */ |
1520 | ||
79072805 LW |
1521 | switch (lex_state) { |
1522 | #ifdef COMMENTARY | |
1523 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1524 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1525 | break; | |
1526 | #endif | |
1527 | ||
02aa26ce | 1528 | /* when we're already built the next token, just pull it out the queue */ |
79072805 LW |
1529 | case LEX_KNOWNEXT: |
1530 | nexttoke--; | |
1531 | yylval = nextval[nexttoke]; | |
463ee0b2 | 1532 | if (!nexttoke) { |
79072805 | 1533 | lex_state = lex_defer; |
463ee0b2 | 1534 | expect = lex_expect; |
a0d0e21e | 1535 | lex_defer = LEX_NORMAL; |
463ee0b2 | 1536 | } |
79072805 LW |
1537 | return(nexttype[nexttoke]); |
1538 | ||
02aa26ce NT |
1539 | /* interpolated case modifiers like \L \U, including \Q and \E. |
1540 | when we get here, bufptr is at the \ | |
1541 | */ | |
79072805 LW |
1542 | case LEX_INTERPCASEMOD: |
1543 | #ifdef DEBUGGING | |
1544 | if (bufptr != bufend && *bufptr != '\\') | |
463ee0b2 | 1545 | croak("panic: INTERPCASEMOD"); |
79072805 | 1546 | #endif |
02aa26ce NT |
1547 | /* handle \E or end of string */ |
1548 | if (bufptr == bufend || bufptr[1] == 'E') { | |
a0d0e21e | 1549 | char oldmod; |
02aa26ce NT |
1550 | |
1551 | /* if at a \E */ | |
79072805 | 1552 | if (lex_casemods) { |
a0d0e21e LW |
1553 | oldmod = lex_casestack[--lex_casemods]; |
1554 | lex_casestack[lex_casemods] = '\0'; | |
02aa26ce | 1555 | |
a0d0e21e LW |
1556 | if (bufptr != bufend && strchr("LUQ", oldmod)) { |
1557 | bufptr += 2; | |
1558 | lex_state = LEX_INTERPCONCAT; | |
1559 | } | |
79072805 LW |
1560 | return ')'; |
1561 | } | |
a0d0e21e LW |
1562 | if (bufptr != bufend) |
1563 | bufptr += 2; | |
1564 | lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1565 | return yylex(); |
1566 | } | |
1567 | else { | |
1568 | s = bufptr + 1; | |
1569 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
1570 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e LW |
1571 | if (strchr("LU", *s) && |
1572 | (strchr(lex_casestack, 'L') || strchr(lex_casestack, 'U'))) | |
1573 | { | |
1574 | lex_casestack[--lex_casemods] = '\0'; | |
1575 | return ')'; | |
1576 | } | |
1577 | if (lex_casemods > 10) { | |
89bfa8cd | 1578 | char* newlb = Renew(lex_casestack, lex_casemods + 2, char); |
a0d0e21e LW |
1579 | if (newlb != lex_casestack) { |
1580 | SAVEFREEPV(newlb); | |
1581 | lex_casestack = newlb; | |
1582 | } | |
1583 | } | |
1584 | lex_casestack[lex_casemods++] = *s; | |
1585 | lex_casestack[lex_casemods] = '\0'; | |
79072805 LW |
1586 | lex_state = LEX_INTERPCONCAT; |
1587 | nextval[nexttoke].ival = 0; | |
1588 | force_next('('); | |
1589 | if (*s == 'l') | |
1590 | nextval[nexttoke].ival = OP_LCFIRST; | |
1591 | else if (*s == 'u') | |
1592 | nextval[nexttoke].ival = OP_UCFIRST; | |
1593 | else if (*s == 'L') | |
1594 | nextval[nexttoke].ival = OP_LC; | |
1595 | else if (*s == 'U') | |
1596 | nextval[nexttoke].ival = OP_UC; | |
a0d0e21e LW |
1597 | else if (*s == 'Q') |
1598 | nextval[nexttoke].ival = OP_QUOTEMETA; | |
79072805 | 1599 | else |
463ee0b2 | 1600 | croak("panic: yylex"); |
79072805 LW |
1601 | bufptr = s + 1; |
1602 | force_next(FUNC); | |
1603 | if (lex_starts) { | |
1604 | s = bufptr; | |
463ee0b2 | 1605 | lex_starts = 0; |
79072805 LW |
1606 | Aop(OP_CONCAT); |
1607 | } | |
1608 | else | |
1609 | return yylex(); | |
1610 | } | |
1611 | ||
55497cff | 1612 | case LEX_INTERPPUSH: |
1613 | return sublex_push(); | |
1614 | ||
79072805 LW |
1615 | case LEX_INTERPSTART: |
1616 | if (bufptr == bufend) | |
1617 | return sublex_done(); | |
1618 | expect = XTERM; | |
1619 | lex_dojoin = (*bufptr == '@'); | |
1620 | lex_state = LEX_INTERPNORMAL; | |
1621 | if (lex_dojoin) { | |
1622 | nextval[nexttoke].ival = 0; | |
1623 | force_next(','); | |
554b3eca | 1624 | #ifdef USE_THREADS |
2faa37cc | 1625 | nextval[nexttoke].opval = newOP(OP_THREADSV, 0); |
54b9620d | 1626 | nextval[nexttoke].opval->op_targ = find_threadsv("\""); |
554b3eca MB |
1627 | force_next(PRIVATEREF); |
1628 | #else | |
a0d0e21e | 1629 | force_ident("\"", '$'); |
554b3eca | 1630 | #endif /* USE_THREADS */ |
79072805 LW |
1631 | nextval[nexttoke].ival = 0; |
1632 | force_next('$'); | |
1633 | nextval[nexttoke].ival = 0; | |
1634 | force_next('('); | |
1635 | nextval[nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ | |
1636 | force_next(FUNC); | |
1637 | } | |
1638 | if (lex_starts++) { | |
1639 | s = bufptr; | |
1640 | Aop(OP_CONCAT); | |
1641 | } | |
68dc0745 | 1642 | return yylex(); |
79072805 LW |
1643 | |
1644 | case LEX_INTERPENDMAYBE: | |
1645 | if (intuit_more(bufptr)) { | |
1646 | lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
1647 | break; | |
1648 | } | |
1649 | /* FALL THROUGH */ | |
1650 | ||
1651 | case LEX_INTERPEND: | |
1652 | if (lex_dojoin) { | |
1653 | lex_dojoin = FALSE; | |
1654 | lex_state = LEX_INTERPCONCAT; | |
1655 | return ')'; | |
1656 | } | |
1657 | /* FALLTHROUGH */ | |
1658 | case LEX_INTERPCONCAT: | |
1659 | #ifdef DEBUGGING | |
1660 | if (lex_brackets) | |
463ee0b2 | 1661 | croak("panic: INTERPCONCAT"); |
79072805 LW |
1662 | #endif |
1663 | if (bufptr == bufend) | |
1664 | return sublex_done(); | |
1665 | ||
ed6116ce | 1666 | if (SvIVX(linestr) == '\'') { |
79072805 LW |
1667 | SV *sv = newSVsv(linestr); |
1668 | if (!lex_inpat) | |
1669 | sv = q(sv); | |
1670 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); | |
1671 | s = bufend; | |
1672 | } | |
1673 | else { | |
1674 | s = scan_const(bufptr); | |
1675 | if (*s == '\\') | |
1676 | lex_state = LEX_INTERPCASEMOD; | |
1677 | else | |
1678 | lex_state = LEX_INTERPSTART; | |
1679 | } | |
1680 | ||
1681 | if (s != bufptr) { | |
1682 | nextval[nexttoke] = yylval; | |
463ee0b2 | 1683 | expect = XTERM; |
79072805 LW |
1684 | force_next(THING); |
1685 | if (lex_starts++) | |
1686 | Aop(OP_CONCAT); | |
1687 | else { | |
1688 | bufptr = s; | |
1689 | return yylex(); | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | return yylex(); | |
a0d0e21e LW |
1694 | case LEX_FORMLINE: |
1695 | lex_state = LEX_NORMAL; | |
1696 | s = scan_formline(bufptr); | |
1697 | if (!lex_formbrack) | |
1698 | goto rightbracket; | |
1699 | OPERATOR(';'); | |
79072805 LW |
1700 | } |
1701 | ||
1702 | s = bufptr; | |
a687059c LW |
1703 | oldoldbufptr = oldbufptr; |
1704 | oldbufptr = s; | |
79072805 | 1705 | DEBUG_p( { |
760ac839 | 1706 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[expect], s); |
79072805 | 1707 | } ) |
463ee0b2 LW |
1708 | |
1709 | retry: | |
378cc40b LW |
1710 | switch (*s) { |
1711 | default: | |
54310121 | 1712 | croak("Unrecognized character \\%03o", *s & 255); |
e929a76b LW |
1713 | case 4: |
1714 | case 26: | |
1715 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1716 | case 0: |
463ee0b2 | 1717 | if (!rsfp) { |
55497cff | 1718 | last_uni = 0; |
1719 | last_lop = 0; | |
463ee0b2 LW |
1720 | if (lex_brackets) |
1721 | yyerror("Missing right bracket"); | |
79072805 | 1722 | TOKEN(0); |
463ee0b2 | 1723 | } |
a687059c LW |
1724 | if (s++ < bufend) |
1725 | goto retry; /* ignore stray nulls */ | |
2f3197b3 | 1726 | last_uni = 0; |
79072805 | 1727 | last_lop = 0; |
a0d0e21e | 1728 | if (!in_eval && !preambled) { |
79072805 | 1729 | preambled = TRUE; |
a0d0e21e | 1730 | sv_setpv(linestr,incl_perldb()); |
91b7def8 | 1731 | if (SvCUR(linestr)) |
1732 | sv_catpv(linestr,";"); | |
1733 | if (preambleav){ | |
93965878 | 1734 | while(AvFILLp(preambleav) >= 0) { |
91b7def8 | 1735 | SV *tmpsv = av_shift(preambleav); |
1736 | sv_catsv(linestr, tmpsv); | |
1737 | sv_catpv(linestr, ";"); | |
1738 | sv_free(tmpsv); | |
1739 | } | |
1740 | sv_free((SV*)preambleav); | |
1741 | preambleav = NULL; | |
1742 | } | |
79072805 LW |
1743 | if (minus_n || minus_p) { |
1744 | sv_catpv(linestr, "LINE: while (<>) {"); | |
1745 | if (minus_l) | |
a0d0e21e | 1746 | sv_catpv(linestr,"chomp;"); |
8fd239a7 CS |
1747 | if (minus_a) { |
1748 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); | |
1749 | if (gv) | |
1750 | GvIMPORTED_AV_on(gv); | |
1751 | if (minus_F) { | |
54310121 | 1752 | if (strchr("/'\"", *splitstr) |
1753 | && strchr(splitstr + 1, *splitstr)) | |
46fc3d4c | 1754 | sv_catpvf(linestr, "@F=split(%s);", splitstr); |
54310121 | 1755 | else { |
1756 | char delim; | |
1757 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
1758 | while (s[1] && strchr(splitstr, *s)) s++; | |
1759 | delim = *s; | |
46fc3d4c | 1760 | sv_catpvf(linestr, "@F=split(%s%c", |
1761 | "q" + (delim == '\''), delim); | |
1762 | for (s = splitstr; *s; s++) { | |
54310121 | 1763 | if (*s == '\\') |
46fc3d4c | 1764 | sv_catpvn(linestr, "\\", 1); |
1765 | sv_catpvn(linestr, s, 1); | |
54310121 | 1766 | } |
46fc3d4c | 1767 | sv_catpvf(linestr, "%c);", delim); |
54310121 | 1768 | } |
2304df62 AD |
1769 | } |
1770 | else | |
1771 | sv_catpv(linestr,"@F=split(' ');"); | |
1772 | } | |
79072805 | 1773 | } |
a0d0e21e | 1774 | sv_catpv(linestr, "\n"); |
fd049845 | 1775 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
463ee0b2 | 1776 | bufend = SvPVX(linestr) + SvCUR(linestr); |
84902520 | 1777 | if (PERLDB_LINE && curstash != debstash) { |
a0d0e21e LW |
1778 | SV *sv = NEWSV(85,0); |
1779 | ||
1780 | sv_upgrade(sv, SVt_PVMG); | |
1781 | sv_setsv(sv,linestr); | |
1782 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); | |
1783 | } | |
79072805 | 1784 | goto retry; |
a687059c | 1785 | } |
e929a76b | 1786 | do { |
fd049845 | 1787 | if ((s = filter_gets(linestr, rsfp, 0)) == Nullch) { |
e929a76b | 1788 | fake_eof: |
395c3793 | 1789 | if (rsfp) { |
a0d0e21e | 1790 | if (preprocess && !in_eval) |
3028581b | 1791 | (void)PerlProc_pclose(rsfp); |
760ac839 LW |
1792 | else if ((PerlIO *)rsfp == PerlIO_stdin()) |
1793 | PerlIO_clearerr(rsfp); | |
395c3793 | 1794 | else |
760ac839 | 1795 | (void)PerlIO_close(rsfp); |
90248788 TB |
1796 | if (e_fp == rsfp) |
1797 | e_fp = Nullfp; | |
395c3793 LW |
1798 | rsfp = Nullfp; |
1799 | } | |
a0d0e21e | 1800 | if (!in_eval && (minus_n || minus_p)) { |
79072805 LW |
1801 | sv_setpv(linestr,minus_p ? ";}continue{print" : ""); |
1802 | sv_catpv(linestr,";}"); | |
fd049845 | 1803 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
463ee0b2 | 1804 | bufend = SvPVX(linestr) + SvCUR(linestr); |
e929a76b LW |
1805 | minus_n = minus_p = 0; |
1806 | goto retry; | |
1807 | } | |
fd049845 | 1808 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
79072805 LW |
1809 | sv_setpv(linestr,""); |
1810 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
378cc40b | 1811 | } |
a0d0e21e LW |
1812 | if (doextract) { |
1813 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) | |
1814 | doextract = FALSE; | |
1815 | ||
1816 | /* Incest with pod. */ | |
1817 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
1818 | sv_setpv(linestr, ""); | |
fd049845 | 1819 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
a0d0e21e LW |
1820 | bufend = SvPVX(linestr) + SvCUR(linestr); |
1821 | doextract = FALSE; | |
1822 | } | |
1823 | } | |
463ee0b2 | 1824 | incline(s); |
e929a76b | 1825 | } while (doextract); |
fd049845 | 1826 | oldoldbufptr = oldbufptr = bufptr = linestart = s; |
84902520 | 1827 | if (PERLDB_LINE && curstash != debstash) { |
79072805 | 1828 | SV *sv = NEWSV(85,0); |
a687059c | 1829 | |
93a17b20 | 1830 | sv_upgrade(sv, SVt_PVMG); |
79072805 LW |
1831 | sv_setsv(sv,linestr); |
1832 | av_store(GvAV(curcop->cop_filegv),(I32)curcop->cop_line,sv); | |
a687059c | 1833 | } |
463ee0b2 | 1834 | bufend = SvPVX(linestr) + SvCUR(linestr); |
79072805 LW |
1835 | if (curcop->cop_line == 1) { |
1836 | while (s < bufend && isSPACE(*s)) | |
1837 | s++; | |
a0d0e21e | 1838 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 1839 | s++; |
44a8e56a | 1840 | d = Nullch; |
1841 | if (!in_eval) { | |
1842 | if (*s == '#' && *(s+1) == '!') | |
1843 | d = s + 2; | |
1844 | #ifdef ALTERNATE_SHEBANG | |
1845 | else { | |
1846 | static char as[] = ALTERNATE_SHEBANG; | |
1847 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
1848 | d = s + (sizeof(as) - 1); | |
1849 | } | |
1850 | #endif /* ALTERNATE_SHEBANG */ | |
1851 | } | |
1852 | if (d) { | |
b8378b72 | 1853 | char *ipath; |
774d564b | 1854 | char *ipathend; |
b8378b72 | 1855 | |
774d564b | 1856 | while (isSPACE(*d)) |
b8378b72 CS |
1857 | d++; |
1858 | ipath = d; | |
774d564b | 1859 | while (*d && !isSPACE(*d)) |
1860 | d++; | |
1861 | ipathend = d; | |
1862 | ||
1863 | #ifdef ARG_ZERO_IS_SCRIPT | |
1864 | if (ipathend > ipath) { | |
1865 | /* | |
1866 | * HP-UX (at least) sets argv[0] to the script name, | |
1867 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
1868 | * at least, set argv[0] to the basename of the Perl | |
1869 | * interpreter. So, having found "#!", we'll set it right. | |
1870 | */ | |
1871 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
1872 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
9607fc9c | 1873 | if (sv_eq(x, GvSV(curcop->cop_filegv))) { |
774d564b | 1874 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 1875 | SvSETMAGIC(x); |
1876 | } | |
774d564b | 1877 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 1878 | } |
774d564b | 1879 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
1880 | |
1881 | /* | |
1882 | * Look for options. | |
1883 | */ | |
748a9306 LW |
1884 | d = instr(s,"perl -"); |
1885 | if (!d) | |
1886 | d = instr(s,"perl"); | |
44a8e56a | 1887 | #ifdef ALTERNATE_SHEBANG |
1888 | /* | |
1889 | * If the ALTERNATE_SHEBANG on this system starts with a | |
1890 | * character that can be part of a Perl expression, then if | |
1891 | * we see it but not "perl", we're probably looking at the | |
1892 | * start of Perl code, not a request to hand off to some | |
1893 | * other interpreter. Similarly, if "perl" is there, but | |
1894 | * not in the first 'word' of the line, we assume the line | |
1895 | * contains the start of the Perl program. | |
44a8e56a | 1896 | */ |
1897 | if (d && *s != '#') { | |
774d564b | 1898 | char *c = ipath; |
44a8e56a | 1899 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
1900 | c++; | |
1901 | if (c < d) | |
1902 | d = Nullch; /* "perl" not in first word; ignore */ | |
1903 | else | |
1904 | *s = '#'; /* Don't try to parse shebang line */ | |
1905 | } | |
774d564b | 1906 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 1907 | if (!d && |
44a8e56a | 1908 | *s == '#' && |
774d564b | 1909 | ipathend > ipath && |
748a9306 LW |
1910 | !minus_c && |
1911 | !instr(s,"indir") && | |
1912 | instr(origargv[0],"perl")) | |
1913 | { | |
9f68db38 | 1914 | char **newargv; |
9f68db38 | 1915 | |
774d564b | 1916 | *ipathend = '\0'; |
1917 | s = ipathend + 1; | |
de3bb511 | 1918 | while (s < bufend && isSPACE(*s)) |
9f68db38 LW |
1919 | s++; |
1920 | if (s < bufend) { | |
1921 | Newz(899,newargv,origargc+3,char*); | |
1922 | newargv[1] = s; | |
de3bb511 | 1923 | while (s < bufend && !isSPACE(*s)) |
9f68db38 LW |
1924 | s++; |
1925 | *s = '\0'; | |
1926 | Copy(origargv+1, newargv+2, origargc+1, char*); | |
1927 | } | |
1928 | else | |
1929 | newargv = origargv; | |
774d564b | 1930 | newargv[0] = ipath; |
1931 | execv(ipath, newargv); | |
1932 | croak("Can't exec %s", ipath); | |
9f68db38 | 1933 | } |
748a9306 | 1934 | if (d) { |
ba6d6ac9 CS |
1935 | U32 oldpdb = perldb; |
1936 | bool oldn = minus_n; | |
1937 | bool oldp = minus_p; | |
748a9306 LW |
1938 | |
1939 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 1940 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
1941 | |
1942 | if (*d++ == '-') { | |
8cc95fdb | 1943 | do { |
1944 | if (*d == 'M' || *d == 'm') { | |
1945 | char *m = d; | |
1946 | while (*d && !isSPACE(*d)) d++; | |
1947 | croak("Too late for \"-%.*s\" option", | |
1948 | (int)(d - m), m); | |
1949 | } | |
1950 | d = moreswitches(d); | |
1951 | } while (d); | |
84902520 | 1952 | if (PERLDB_LINE && !oldpdb || |
b084f20b | 1953 | ( minus_n || minus_p ) && !(oldn || oldp) ) |
1954 | /* if we have already added "LINE: while (<>) {", | |
1955 | we must not do it again */ | |
748a9306 LW |
1956 | { |
1957 | sv_setpv(linestr, ""); | |
fd049845 | 1958 | oldoldbufptr = oldbufptr = s = linestart = SvPVX(linestr); |
748a9306 LW |
1959 | bufend = SvPVX(linestr) + SvCUR(linestr); |
1960 | preambled = FALSE; | |
84902520 | 1961 | if (PERLDB_LINE) |
748a9306 LW |
1962 | (void)gv_fetchfile(origfilename); |
1963 | goto retry; | |
1964 | } | |
a0d0e21e | 1965 | } |
79072805 | 1966 | } |
9f68db38 | 1967 | } |
79072805 | 1968 | } |
85e6fe83 | 1969 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
a0d0e21e LW |
1970 | bufptr = s; |
1971 | lex_state = LEX_FORMLINE; | |
1972 | return yylex(); | |
ae986130 | 1973 | } |
378cc40b | 1974 | goto retry; |
4fdae800 | 1975 | case '\r': |
a868473f | 1976 | #ifndef WIN32CHEAT |
54310121 | 1977 | warn("Illegal character \\%03o (carriage return)", '\r'); |
1978 | croak( | |
1979 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 1980 | #endif |
4fdae800 | 1981 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
1982 | s++; |
1983 | goto retry; | |
378cc40b | 1984 | case '#': |
e929a76b | 1985 | case '\n': |
79072805 | 1986 | if (lex_state != LEX_NORMAL || (in_eval && !rsfp)) { |
a687059c LW |
1987 | d = bufend; |
1988 | while (s < d && *s != '\n') | |
378cc40b | 1989 | s++; |
0f85fab0 | 1990 | if (s < d) |
378cc40b | 1991 | s++; |
463ee0b2 | 1992 | incline(s); |
85e6fe83 | 1993 | if (lex_formbrack && lex_brackets <= lex_formbrack) { |
a0d0e21e LW |
1994 | bufptr = s; |
1995 | lex_state = LEX_FORMLINE; | |
1996 | return yylex(); | |
a687059c | 1997 | } |
378cc40b | 1998 | } |
a687059c | 1999 | else { |
378cc40b | 2000 | *s = '\0'; |
a687059c LW |
2001 | bufend = s; |
2002 | } | |
378cc40b LW |
2003 | goto retry; |
2004 | case '-': | |
79072805 | 2005 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2006 | s++; |
748a9306 LW |
2007 | bufptr = s; |
2008 | tmp = *s++; | |
2009 | ||
2010 | while (s < bufend && (*s == ' ' || *s == '\t')) | |
2011 | s++; | |
2012 | ||
2013 | if (strnEQ(s,"=>",2)) { | |
748a9306 LW |
2014 | s = force_word(bufptr,WORD,FALSE,FALSE,FALSE); |
2015 | OPERATOR('-'); /* unary minus */ | |
2016 | } | |
e334a159 | 2017 | last_uni = oldbufptr; |
a0d0e21e | 2018 | last_lop_op = OP_FTEREAD; /* good enough */ |
748a9306 | 2019 | switch (tmp) { |
79072805 LW |
2020 | case 'r': FTST(OP_FTEREAD); |
2021 | case 'w': FTST(OP_FTEWRITE); | |
2022 | case 'x': FTST(OP_FTEEXEC); | |
2023 | case 'o': FTST(OP_FTEOWNED); | |
2024 | case 'R': FTST(OP_FTRREAD); | |
2025 | case 'W': FTST(OP_FTRWRITE); | |
2026 | case 'X': FTST(OP_FTREXEC); | |
2027 | case 'O': FTST(OP_FTROWNED); | |
2028 | case 'e': FTST(OP_FTIS); | |
2029 | case 'z': FTST(OP_FTZERO); | |
2030 | case 's': FTST(OP_FTSIZE); | |
2031 | case 'f': FTST(OP_FTFILE); | |
2032 | case 'd': FTST(OP_FTDIR); | |
2033 | case 'l': FTST(OP_FTLINK); | |
2034 | case 'p': FTST(OP_FTPIPE); | |
2035 | case 'S': FTST(OP_FTSOCK); | |
2036 | case 'u': FTST(OP_FTSUID); | |
2037 | case 'g': FTST(OP_FTSGID); | |
2038 | case 'k': FTST(OP_FTSVTX); | |
2039 | case 'b': FTST(OP_FTBLK); | |
2040 | case 'c': FTST(OP_FTCHR); | |
2041 | case 't': FTST(OP_FTTTY); | |
2042 | case 'T': FTST(OP_FTTEXT); | |
2043 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2044 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2045 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2046 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2047 | default: |
ff0cee69 | 2048 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2049 | break; |
2050 | } | |
2051 | } | |
a687059c LW |
2052 | tmp = *s++; |
2053 | if (*s == tmp) { | |
2054 | s++; | |
79072805 LW |
2055 | if (expect == XOPERATOR) |
2056 | TERM(POSTDEC); | |
2057 | else | |
2058 | OPERATOR(PREDEC); | |
2059 | } | |
2060 | else if (*s == '>') { | |
2061 | s++; | |
2062 | s = skipspace(s); | |
2063 | if (isIDFIRST(*s)) { | |
a0d0e21e | 2064 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2065 | TOKEN(ARROW); |
79072805 | 2066 | } |
748a9306 LW |
2067 | else if (*s == '$') |
2068 | OPERATOR(ARROW); | |
463ee0b2 | 2069 | else |
748a9306 | 2070 | TERM(ARROW); |
a687059c | 2071 | } |
79072805 LW |
2072 | if (expect == XOPERATOR) |
2073 | Aop(OP_SUBTRACT); | |
2074 | else { | |
2f3197b3 LW |
2075 | if (isSPACE(*s) || !isSPACE(*bufptr)) |
2076 | check_uni(); | |
79072805 | 2077 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2078 | } |
79072805 | 2079 | |
378cc40b | 2080 | case '+': |
a687059c LW |
2081 | tmp = *s++; |
2082 | if (*s == tmp) { | |
378cc40b | 2083 | s++; |
79072805 LW |
2084 | if (expect == XOPERATOR) |
2085 | TERM(POSTINC); | |
2086 | else | |
2087 | OPERATOR(PREINC); | |
378cc40b | 2088 | } |
79072805 LW |
2089 | if (expect == XOPERATOR) |
2090 | Aop(OP_ADD); | |
2091 | else { | |
2f3197b3 LW |
2092 | if (isSPACE(*s) || !isSPACE(*bufptr)) |
2093 | check_uni(); | |
a687059c | 2094 | OPERATOR('+'); |
2f3197b3 | 2095 | } |
a687059c | 2096 | |
378cc40b | 2097 | case '*': |
79072805 | 2098 | if (expect != XOPERATOR) { |
8903cb82 | 2099 | s = scan_ident(s, bufend, tokenbuf, sizeof tokenbuf, TRUE); |
463ee0b2 | 2100 | expect = XOPERATOR; |
a0d0e21e LW |
2101 | force_ident(tokenbuf, '*'); |
2102 | if (!*tokenbuf) | |
2103 | PREREF('*'); | |
79072805 | 2104 | TERM('*'); |
a687059c | 2105 | } |
79072805 LW |
2106 | s++; |
2107 | if (*s == '*') { | |
a687059c | 2108 | s++; |
79072805 | 2109 | PWop(OP_POW); |
a687059c | 2110 | } |
79072805 LW |
2111 | Mop(OP_MULTIPLY); |
2112 | ||
378cc40b | 2113 | case '%': |
bbce6d69 | 2114 | if (expect == XOPERATOR) { |
2115 | ++s; | |
2116 | Mop(OP_MODULO); | |
a687059c | 2117 | } |
bbce6d69 | 2118 | tokenbuf[0] = '%'; |
8903cb82 | 2119 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, TRUE); |
bbce6d69 | 2120 | if (!tokenbuf[1]) { |
2121 | if (s == bufend) | |
2122 | yyerror("Final % should be \\% or %name"); | |
2123 | PREREF('%'); | |
a687059c | 2124 | } |
bbce6d69 | 2125 | pending_ident = '%'; |
2126 | TERM('%'); | |
a687059c | 2127 | |
378cc40b | 2128 | case '^': |
79072805 | 2129 | s++; |
a0d0e21e | 2130 | BOop(OP_BIT_XOR); |
79072805 LW |
2131 | case '[': |
2132 | lex_brackets++; | |
2133 | /* FALL THROUGH */ | |
378cc40b | 2134 | case '~': |
378cc40b | 2135 | case ',': |
378cc40b LW |
2136 | tmp = *s++; |
2137 | OPERATOR(tmp); | |
a0d0e21e LW |
2138 | case ':': |
2139 | if (s[1] == ':') { | |
2140 | len = 0; | |
2141 | goto just_a_word; | |
2142 | } | |
2143 | s++; | |
2144 | OPERATOR(':'); | |
8990e307 LW |
2145 | case '(': |
2146 | s++; | |
a0d0e21e | 2147 | if (last_lop == oldoldbufptr || last_uni == oldoldbufptr) |
8990e307 | 2148 | oldbufptr = oldoldbufptr; /* allow print(STDOUT 123) */ |
a0d0e21e LW |
2149 | else |
2150 | expect = XTERM; | |
2151 | TOKEN('('); | |
378cc40b | 2152 | case ';': |
79072805 LW |
2153 | if (curcop->cop_line < copline) |
2154 | copline = curcop->cop_line; | |
378cc40b LW |
2155 | tmp = *s++; |
2156 | OPERATOR(tmp); | |
2157 | case ')': | |
378cc40b | 2158 | tmp = *s++; |
16d20bd9 AD |
2159 | s = skipspace(s); |
2160 | if (*s == '{') | |
2161 | PREBLOCK(tmp); | |
378cc40b | 2162 | TERM(tmp); |
79072805 LW |
2163 | case ']': |
2164 | s++; | |
463ee0b2 LW |
2165 | if (lex_brackets <= 0) |
2166 | yyerror("Unmatched right bracket"); | |
2167 | else | |
2168 | --lex_brackets; | |
79072805 | 2169 | if (lex_state == LEX_INTERPNORMAL) { |
463ee0b2 | 2170 | if (lex_brackets == 0) { |
a0d0e21e | 2171 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
79072805 LW |
2172 | lex_state = LEX_INTERPEND; |
2173 | } | |
2174 | } | |
4633a7c4 | 2175 | TERM(']'); |
79072805 LW |
2176 | case '{': |
2177 | leftbracket: | |
79072805 | 2178 | s++; |
8990e307 | 2179 | if (lex_brackets > 100) { |
89bfa8cd | 2180 | char* newlb = Renew(lex_brackstack, lex_brackets + 1, char); |
8990e307 LW |
2181 | if (newlb != lex_brackstack) { |
2182 | SAVEFREEPV(newlb); | |
2183 | lex_brackstack = newlb; | |
2184 | } | |
2185 | } | |
a0d0e21e LW |
2186 | switch (expect) { |
2187 | case XTERM: | |
2188 | if (lex_formbrack) { | |
2189 | s--; | |
2190 | PRETERMBLOCK(DO); | |
2191 | } | |
2192 | if (oldoldbufptr == last_lop) | |
2193 | lex_brackstack[lex_brackets++] = XTERM; | |
2194 | else | |
2195 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
79072805 | 2196 | OPERATOR(HASHBRACK); |
a0d0e21e | 2197 | case XOPERATOR: |
748a9306 LW |
2198 | while (s < bufend && (*s == ' ' || *s == '\t')) |
2199 | s++; | |
44a8e56a | 2200 | d = s; |
2201 | tokenbuf[0] = '\0'; | |
2202 | if (d < bufend && *d == '-') { | |
2203 | tokenbuf[0] = '-'; | |
2204 | d++; | |
2205 | while (d < bufend && (*d == ' ' || *d == '\t')) | |
2206 | d++; | |
2207 | } | |
2208 | if (d < bufend && isIDFIRST(*d)) { | |
8903cb82 | 2209 | d = scan_word(d, tokenbuf + 1, sizeof tokenbuf - 1, |
2210 | FALSE, &len); | |
748a9306 LW |
2211 | while (d < bufend && (*d == ' ' || *d == '\t')) |
2212 | d++; | |
2213 | if (*d == '}') { | |
44a8e56a | 2214 | char minus = (tokenbuf[0] == '-'); |
44a8e56a | 2215 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2216 | if (minus) | |
2217 | force_next('-'); | |
748a9306 LW |
2218 | } |
2219 | } | |
2220 | /* FALL THROUGH */ | |
2221 | case XBLOCK: | |
a0d0e21e | 2222 | lex_brackstack[lex_brackets++] = XSTATE; |
2304df62 | 2223 | expect = XSTATE; |
a0d0e21e LW |
2224 | break; |
2225 | case XTERMBLOCK: | |
2226 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
2227 | expect = XSTATE; | |
2228 | break; | |
2229 | default: { | |
2230 | char *t; | |
2231 | if (oldoldbufptr == last_lop) | |
2232 | lex_brackstack[lex_brackets++] = XTERM; | |
2233 | else | |
2234 | lex_brackstack[lex_brackets++] = XOPERATOR; | |
2235 | s = skipspace(s); | |
69dcf70c MB |
2236 | if (*s == '}') { |
2237 | if (expect == XSTATE) { | |
2238 | lex_brackstack[lex_brackets-1] = XSTATE; | |
2239 | break; | |
2240 | } | |
a0d0e21e | 2241 | OPERATOR(HASHBRACK); |
69dcf70c | 2242 | } |
b8a4b1be GS |
2243 | /* This hack serves to disambiguate a pair of curlies |
2244 | * as being a block or an anon hash. Normally, expectation | |
2245 | * determines that, but in cases where we're not in a | |
2246 | * position to expect anything in particular (like inside | |
2247 | * eval"") we have to resolve the ambiguity. This code | |
2248 | * covers the case where the first term in the curlies is a | |
2249 | * quoted string. Most other cases need to be explicitly | |
2250 | * disambiguated by prepending a `+' before the opening | |
2251 | * curly in order to force resolution as an anon hash. | |
2252 | * | |
2253 | * XXX should probably propagate the outer expectation | |
2254 | * into eval"" to rely less on this hack, but that could | |
2255 | * potentially break current behavior of eval"". | |
2256 | * GSAR 97-07-21 | |
2257 | */ | |
2258 | t = s; | |
2259 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2260 | /* common case: get past first string, handling escapes */ | |
2261 | for (t++; t < bufend && *t != *s;) | |
2262 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) | |
2263 | t++; | |
2264 | t++; | |
a0d0e21e | 2265 | } |
b8a4b1be GS |
2266 | else if (*s == 'q') { |
2267 | if (++t < bufend | |
2268 | && (!isALNUM(*t) | |
2269 | || ((*t == 'q' || *t == 'x') && ++t < bufend | |
2270 | && !isALNUM(*t)))) { | |
2271 | char *tmps; | |
2272 | char open, close, term; | |
2273 | I32 brackets = 1; | |
2274 | ||
2275 | while (t < bufend && isSPACE(*t)) | |
2276 | t++; | |
2277 | term = *t; | |
2278 | open = term; | |
2279 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2280 | term = tmps[5]; | |
2281 | close = term; | |
2282 | if (open == close) | |
2283 | for (t++; t < bufend; t++) { | |
6d07e5e9 | 2284 | if (*t == '\\' && t+1 < bufend && open != '\\') |
b8a4b1be | 2285 | t++; |
6d07e5e9 | 2286 | else if (*t == open) |
b8a4b1be GS |
2287 | break; |
2288 | } | |
2289 | else | |
2290 | for (t++; t < bufend; t++) { | |
6d07e5e9 | 2291 | if (*t == '\\' && t+1 < bufend) |
b8a4b1be | 2292 | t++; |
6d07e5e9 | 2293 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2294 | break; |
2295 | else if (*t == open) | |
2296 | brackets++; | |
2297 | } | |
2298 | } | |
2299 | t++; | |
a0d0e21e | 2300 | } |
b8a4b1be GS |
2301 | else if (isALPHA(*s)) { |
2302 | for (t++; t < bufend && isALNUM(*t); t++) ; | |
a0d0e21e | 2303 | } |
a0d0e21e LW |
2304 | while (t < bufend && isSPACE(*t)) |
2305 | t++; | |
b8a4b1be GS |
2306 | /* if comma follows first term, call it an anon hash */ |
2307 | /* XXX it could be a comma expression with loop modifiers */ | |
2308 | if (t < bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) | |
2309 | || (*t == '=' && t[1] == '>'))) | |
a0d0e21e LW |
2310 | OPERATOR(HASHBRACK); |
2311 | if (expect == XREF) | |
2312 | expect = XTERM; | |
2313 | else { | |
2314 | lex_brackstack[lex_brackets-1] = XSTATE; | |
2315 | expect = XSTATE; | |
2316 | } | |
8990e307 | 2317 | } |
a0d0e21e | 2318 | break; |
463ee0b2 | 2319 | } |
79072805 LW |
2320 | yylval.ival = curcop->cop_line; |
2321 | if (isSPACE(*s) || *s == '#') | |
2322 | copline = NOLINE; /* invalidate current command line number */ | |
79072805 | 2323 | TOKEN('{'); |
378cc40b | 2324 | case '}': |
79072805 LW |
2325 | rightbracket: |
2326 | s++; | |
463ee0b2 LW |
2327 | if (lex_brackets <= 0) |
2328 | yyerror("Unmatched right bracket"); | |
2329 | else | |
2330 | expect = (expectation)lex_brackstack[--lex_brackets]; | |
85e6fe83 LW |
2331 | if (lex_brackets < lex_formbrack) |
2332 | lex_formbrack = 0; | |
79072805 | 2333 | if (lex_state == LEX_INTERPNORMAL) { |
463ee0b2 | 2334 | if (lex_brackets == 0) { |
79072805 LW |
2335 | if (lex_fakebrack) { |
2336 | lex_state = LEX_INTERPEND; | |
2337 | bufptr = s; | |
2338 | return yylex(); /* ignore fake brackets */ | |
2339 | } | |
fa83b5b6 | 2340 | if (*s == '-' && s[1] == '>') |
2341 | lex_state = LEX_INTERPENDMAYBE; | |
2342 | else if (*s != '[' && *s != '{') | |
79072805 LW |
2343 | lex_state = LEX_INTERPEND; |
2344 | } | |
2345 | } | |
748a9306 LW |
2346 | if (lex_brackets < lex_fakebrack) { |
2347 | bufptr = s; | |
2348 | lex_fakebrack = 0; | |
2349 | return yylex(); /* ignore fake brackets */ | |
2350 | } | |
79072805 LW |
2351 | force_next('}'); |
2352 | TOKEN(';'); | |
378cc40b LW |
2353 | case '&': |
2354 | s++; | |
2355 | tmp = *s++; | |
2356 | if (tmp == '&') | |
a0d0e21e | 2357 | AOPERATOR(ANDAND); |
378cc40b | 2358 | s--; |
463ee0b2 | 2359 | if (expect == XOPERATOR) { |
fd049845 | 2360 | if (dowarn && isALPHA(*s) && bufptr == linestart) { |
463ee0b2 LW |
2361 | curcop->cop_line--; |
2362 | warn(warn_nosemi); | |
2363 | curcop->cop_line++; | |
2364 | } | |
79072805 | 2365 | BAop(OP_BIT_AND); |
463ee0b2 | 2366 | } |
79072805 | 2367 | |
8903cb82 | 2368 | s = scan_ident(s - 1, bufend, tokenbuf, sizeof tokenbuf, TRUE); |
463ee0b2 LW |
2369 | if (*tokenbuf) { |
2370 | expect = XOPERATOR; | |
a0d0e21e | 2371 | force_ident(tokenbuf, '&'); |
463ee0b2 | 2372 | } |
79072805 LW |
2373 | else |
2374 | PREREF('&'); | |
c07a80fd | 2375 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2376 | TERM('&'); |
2377 | ||
378cc40b LW |
2378 | case '|': |
2379 | s++; | |
2380 | tmp = *s++; | |
2381 | if (tmp == '|') | |
a0d0e21e | 2382 | AOPERATOR(OROR); |
378cc40b | 2383 | s--; |
79072805 | 2384 | BOop(OP_BIT_OR); |
378cc40b LW |
2385 | case '=': |
2386 | s++; | |
2387 | tmp = *s++; | |
2388 | if (tmp == '=') | |
79072805 LW |
2389 | Eop(OP_EQ); |
2390 | if (tmp == '>') | |
2391 | OPERATOR(','); | |
378cc40b | 2392 | if (tmp == '~') |
79072805 | 2393 | PMop(OP_MATCH); |
463ee0b2 | 2394 | if (dowarn && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
ff0cee69 | 2395 | warn("Reversed %c= operator",(int)tmp); |
378cc40b | 2396 | s--; |
748a9306 | 2397 | if (expect == XSTATE && isALPHA(tmp) && |
fd049845 | 2398 | (s == linestart+1 || s[-2] == '\n') ) |
748a9306 | 2399 | { |
a5f75d66 AD |
2400 | if (in_eval && !rsfp) { |
2401 | d = bufend; | |
2402 | while (s < d) { | |
2403 | if (*s++ == '\n') { | |
2404 | incline(s); | |
2405 | if (strnEQ(s,"=cut",4)) { | |
2406 | s = strchr(s,'\n'); | |
2407 | if (s) | |
2408 | s++; | |
2409 | else | |
2410 | s = d; | |
2411 | incline(s); | |
2412 | goto retry; | |
2413 | } | |
2414 | } | |
2415 | } | |
2416 | goto retry; | |
2417 | } | |
a0d0e21e LW |
2418 | s = bufend; |
2419 | doextract = TRUE; | |
2420 | goto retry; | |
2421 | } | |
2422 | if (lex_brackets < lex_formbrack) { | |
2423 | char *t; | |
2424 | for (t = s; *t == ' ' || *t == '\t'; t++) ; | |
2425 | if (*t == '\n' || *t == '#') { | |
2426 | s--; | |
2427 | expect = XBLOCK; | |
2428 | goto leftbracket; | |
2429 | } | |
79072805 | 2430 | } |
a0d0e21e LW |
2431 | yylval.ival = 0; |
2432 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2433 | case '!': |
2434 | s++; | |
2435 | tmp = *s++; | |
2436 | if (tmp == '=') | |
79072805 | 2437 | Eop(OP_NE); |
378cc40b | 2438 | if (tmp == '~') |
79072805 | 2439 | PMop(OP_NOT); |
378cc40b LW |
2440 | s--; |
2441 | OPERATOR('!'); | |
2442 | case '<': | |
79072805 | 2443 | if (expect != XOPERATOR) { |
93a17b20 | 2444 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2445 | check_uni(); |
79072805 LW |
2446 | if (s[1] == '<') |
2447 | s = scan_heredoc(s); | |
2448 | else | |
2449 | s = scan_inputsymbol(s); | |
2450 | TERM(sublex_start()); | |
378cc40b LW |
2451 | } |
2452 | s++; | |
2453 | tmp = *s++; | |
2454 | if (tmp == '<') | |
79072805 | 2455 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2456 | if (tmp == '=') { |
2457 | tmp = *s++; | |
2458 | if (tmp == '>') | |
79072805 | 2459 | Eop(OP_NCMP); |
395c3793 | 2460 | s--; |
79072805 | 2461 | Rop(OP_LE); |
395c3793 | 2462 | } |
378cc40b | 2463 | s--; |
79072805 | 2464 | Rop(OP_LT); |
378cc40b LW |
2465 | case '>': |
2466 | s++; | |
2467 | tmp = *s++; | |
2468 | if (tmp == '>') | |
79072805 | 2469 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2470 | if (tmp == '=') |
79072805 | 2471 | Rop(OP_GE); |
378cc40b | 2472 | s--; |
79072805 | 2473 | Rop(OP_GT); |
378cc40b LW |
2474 | |
2475 | case '$': | |
bbce6d69 | 2476 | CLINE; |
2477 | ||
8990e307 | 2478 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2479 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2480 | expect = XTERM; | |
2481 | depcom(); | |
bbce6d69 | 2482 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2483 | } |
8990e307 | 2484 | } |
a0d0e21e | 2485 | |
bbce6d69 | 2486 | if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:", s[2]))) { |
2487 | if (expect == XOPERATOR) | |
2488 | no_op("Array length", bufptr); | |
2489 | tokenbuf[0] = '@'; | |
8903cb82 | 2490 | s = scan_ident(s + 1, bufend, tokenbuf + 1, sizeof tokenbuf - 1, |
2491 | FALSE); | |
bbce6d69 | 2492 | if (!tokenbuf[1]) |
a0d0e21e | 2493 | PREREF(DOLSHARP); |
463ee0b2 | 2494 | expect = XOPERATOR; |
bbce6d69 | 2495 | pending_ident = '#'; |
463ee0b2 | 2496 | TOKEN(DOLSHARP); |
79072805 | 2497 | } |
bbce6d69 | 2498 | |
2499 | if (expect == XOPERATOR) | |
2500 | no_op("Scalar", bufptr); | |
2501 | tokenbuf[0] = '$'; | |
8903cb82 | 2502 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE); |
bbce6d69 | 2503 | if (!tokenbuf[1]) { |
2504 | if (s == bufend) | |
2505 | yyerror("Final $ should be \\$ or $name"); | |
2506 | PREREF('$'); | |
8990e307 | 2507 | } |
a0d0e21e | 2508 | |
bbce6d69 | 2509 | /* This kludge not intended to be bulletproof. */ |
2510 | if (tokenbuf[1] == '[' && !tokenbuf[2]) { | |
2511 | yylval.opval = newSVOP(OP_CONST, 0, | |
2512 | newSViv((IV)compiling.cop_arybase)); | |
2513 | yylval.opval->op_private = OPpCONST_ARYBASE; | |
2514 | TERM(THING); | |
2515 | } | |
2516 | ||
ff68c719 | 2517 | d = s; |
2518 | if (lex_state == LEX_NORMAL) | |
2519 | s = skipspace(s); | |
2520 | ||
bbce6d69 | 2521 | if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) { |
2522 | char *t; | |
2523 | if (*s == '[') { | |
2524 | tokenbuf[0] = '@'; | |
2525 | if (dowarn) { | |
2526 | for(t = s + 1; | |
2527 | isSPACE(*t) || isALNUM(*t) || *t == '$'; | |
2528 | t++) ; | |
a0d0e21e LW |
2529 | if (*t++ == ',') { |
2530 | bufptr = skipspace(bufptr); | |
bbce6d69 | 2531 | while (t < bufend && *t != ']') |
2532 | t++; | |
a0d0e21e | 2533 | warn("Multidimensional syntax %.*s not supported", |
bbce6d69 | 2534 | (t - bufptr) + 1, bufptr); |
a0d0e21e LW |
2535 | } |
2536 | } | |
bbce6d69 | 2537 | } |
2538 | else if (*s == '{') { | |
2539 | tokenbuf[0] = '%'; | |
2540 | if (dowarn && strEQ(tokenbuf+1, "SIG") && | |
2541 | (t = strchr(s, '}')) && (t = strchr(t, '='))) | |
2542 | { | |
8903cb82 | 2543 | char tmpbuf[sizeof tokenbuf]; |
a0d0e21e LW |
2544 | STRLEN len; |
2545 | for (t++; isSPACE(*t); t++) ; | |
748a9306 | 2546 | if (isIDFIRST(*t)) { |
8903cb82 | 2547 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
748a9306 LW |
2548 | if (*t != '(' && perl_get_cv(tmpbuf, FALSE)) |
2549 | warn("You need to quote \"%s\"", tmpbuf); | |
2550 | } | |
93a17b20 LW |
2551 | } |
2552 | } | |
2f3197b3 | 2553 | } |
bbce6d69 | 2554 | |
2555 | expect = XOPERATOR; | |
ff68c719 | 2556 | if (lex_state == LEX_NORMAL && isSPACE(*d)) { |
bbce6d69 | 2557 | bool islop = (last_lop == oldoldbufptr); |
bbce6d69 | 2558 | if (!islop || last_lop_op == OP_GREPSTART) |
2559 | expect = XOPERATOR; | |
2560 | else if (strchr("$@\"'`q", *s)) | |
2561 | expect = XTERM; /* e.g. print $fh "foo" */ | |
2562 | else if (strchr("&*<%", *s) && isIDFIRST(s[1])) | |
2563 | expect = XTERM; /* e.g. print $fh &sub */ | |
68dc0745 | 2564 | else if (isIDFIRST(*s)) { |
8903cb82 | 2565 | char tmpbuf[sizeof tokenbuf]; |
2566 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
84902520 TB |
2567 | if (tmp = keyword(tmpbuf, len)) { |
2568 | /* binary operators exclude handle interpretations */ | |
2569 | switch (tmp) { | |
2570 | case -KEY_x: | |
2571 | case -KEY_eq: | |
2572 | case -KEY_ne: | |
2573 | case -KEY_gt: | |
2574 | case -KEY_lt: | |
2575 | case -KEY_ge: | |
2576 | case -KEY_le: | |
2577 | case -KEY_cmp: | |
2578 | break; | |
2579 | default: | |
2580 | expect = XTERM; /* e.g. print $fh length() */ | |
2581 | break; | |
2582 | } | |
2583 | } | |
68dc0745 | 2584 | else { |
2585 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2586 | if (gv && GvCVu(gv)) | |
2587 | expect = XTERM; /* e.g. print $fh subr() */ | |
93a17b20 | 2588 | } |
93a17b20 | 2589 | } |
bbce6d69 | 2590 | else if (isDIGIT(*s)) |
2591 | expect = XTERM; /* e.g. print $fh 3 */ | |
2592 | else if (*s == '.' && isDIGIT(s[1])) | |
2593 | expect = XTERM; /* e.g. print $fh .3 */ | |
2594 | else if (strchr("/?-+", *s) && !isSPACE(s[1])) | |
2595 | expect = XTERM; /* e.g. print $fh -1 */ | |
2596 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2])) | |
2597 | expect = XTERM; /* print $fh <<"EOF" */ | |
2598 | } | |
2599 | pending_ident = '$'; | |
79072805 | 2600 | TOKEN('$'); |
378cc40b LW |
2601 | |
2602 | case '@': | |
8990e307 | 2603 | if (expect == XOPERATOR) |
bbce6d69 | 2604 | no_op("Array", s); |
2605 | tokenbuf[0] = '@'; | |
8903cb82 | 2606 | s = scan_ident(s, bufend, tokenbuf + 1, sizeof tokenbuf - 1, FALSE); |
bbce6d69 | 2607 | if (!tokenbuf[1]) { |
2608 | if (s == bufend) | |
2609 | yyerror("Final @ should be \\@ or @name"); | |
2610 | PREREF('@'); | |
2611 | } | |
ff68c719 | 2612 | if (lex_state == LEX_NORMAL) |
2613 | s = skipspace(s); | |
bbce6d69 | 2614 | if ((expect != XREF || oldoldbufptr == last_lop) && intuit_more(s)) { |
2615 | if (*s == '{') | |
2616 | tokenbuf[0] = '%'; | |
a0d0e21e LW |
2617 | |
2618 | /* Warn about @ where they meant $. */ | |
2619 | if (dowarn) { | |
2620 | if (*s == '[' || *s == '{') { | |
2621 | char *t = s + 1; | |
2622 | while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t))) | |
2623 | t++; | |
2624 | if (*t == '}' || *t == ']') { | |
2625 | t++; | |
2626 | bufptr = skipspace(bufptr); | |
2627 | warn("Scalar value %.*s better written as $%.*s", | |
2628 | t-bufptr, bufptr, t-bufptr-1, bufptr+1); | |
2629 | } | |
93a17b20 LW |
2630 | } |
2631 | } | |
463ee0b2 | 2632 | } |
bbce6d69 | 2633 | pending_ident = '@'; |
79072805 | 2634 | TERM('@'); |
378cc40b LW |
2635 | |
2636 | case '/': /* may either be division or pattern */ | |
2637 | case '?': /* may either be conditional or pattern */ | |
79072805 | 2638 | if (expect != XOPERATOR) { |
c277df42 IZ |
2639 | /* Disable warning on "study /blah/" */ |
2640 | if (oldoldbufptr == last_uni | |
2641 | && (*last_uni != 's' || s - last_uni < 5 | |
2642 | || memNE(last_uni, "study", 5) || isALNUM(last_uni[5]))) | |
2643 | check_uni(); | |
79072805 LW |
2644 | s = scan_pat(s); |
2645 | TERM(sublex_start()); | |
378cc40b LW |
2646 | } |
2647 | tmp = *s++; | |
a687059c | 2648 | if (tmp == '/') |
79072805 | 2649 | Mop(OP_DIVIDE); |
378cc40b LW |
2650 | OPERATOR(tmp); |
2651 | ||
2652 | case '.': | |
748a9306 | 2653 | if (lex_formbrack && lex_brackets == lex_formbrack && s[1] == '\n' && |
fd049845 | 2654 | (s == linestart || s[-1] == '\n') ) { |
85e6fe83 | 2655 | lex_formbrack = 0; |
8990e307 | 2656 | expect = XSTATE; |
79072805 LW |
2657 | goto rightbracket; |
2658 | } | |
2659 | if (expect == XOPERATOR || !isDIGIT(s[1])) { | |
378cc40b | 2660 | tmp = *s++; |
a687059c LW |
2661 | if (*s == tmp) { |
2662 | s++; | |
2f3197b3 LW |
2663 | if (*s == tmp) { |
2664 | s++; | |
79072805 | 2665 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2666 | } |
2667 | else | |
79072805 | 2668 | yylval.ival = 0; |
378cc40b | 2669 | OPERATOR(DOTDOT); |
a687059c | 2670 | } |
79072805 | 2671 | if (expect != XOPERATOR) |
2f3197b3 | 2672 | check_uni(); |
79072805 | 2673 | Aop(OP_CONCAT); |
378cc40b LW |
2674 | } |
2675 | /* FALL THROUGH */ | |
2676 | case '0': case '1': case '2': case '3': case '4': | |
2677 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2678 | s = scan_num(s); |
8990e307 LW |
2679 | if (expect == XOPERATOR) |
2680 | no_op("Number",s); | |
79072805 LW |
2681 | TERM(THING); |
2682 | ||
2683 | case '\'': | |
8990e307 | 2684 | s = scan_str(s); |
463ee0b2 | 2685 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2686 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2687 | expect = XTERM; | |
2688 | depcom(); | |
2689 | return ','; /* grandfather non-comma-format format */ | |
2690 | } | |
463ee0b2 | 2691 | else |
8990e307 | 2692 | no_op("String",s); |
463ee0b2 | 2693 | } |
79072805 | 2694 | if (!s) |
85e6fe83 | 2695 | missingterm((char*)0); |
79072805 LW |
2696 | yylval.ival = OP_CONST; |
2697 | TERM(sublex_start()); | |
2698 | ||
2699 | case '"': | |
8990e307 | 2700 | s = scan_str(s); |
463ee0b2 | 2701 | if (expect == XOPERATOR) { |
a0d0e21e LW |
2702 | if (lex_formbrack && lex_brackets == lex_formbrack) { |
2703 | expect = XTERM; | |
2704 | depcom(); | |
2705 | return ','; /* grandfather non-comma-format format */ | |
2706 | } | |
463ee0b2 | 2707 | else |
8990e307 | 2708 | no_op("String",s); |
463ee0b2 | 2709 | } |
79072805 | 2710 | if (!s) |
85e6fe83 | 2711 | missingterm((char*)0); |
4633a7c4 LW |
2712 | yylval.ival = OP_CONST; |
2713 | for (d = SvPV(lex_stuff, len); len; len--, d++) { | |
2714 | if (*d == '$' || *d == '@' || *d == '\\') { | |
2715 | yylval.ival = OP_STRINGIFY; | |
2716 | break; | |
2717 | } | |
2718 | } | |
79072805 LW |
2719 | TERM(sublex_start()); |
2720 | ||
2721 | case '`': | |
2722 | s = scan_str(s); | |
8990e307 LW |
2723 | if (expect == XOPERATOR) |
2724 | no_op("Backticks",s); | |
79072805 | 2725 | if (!s) |
85e6fe83 | 2726 | missingterm((char*)0); |
79072805 LW |
2727 | yylval.ival = OP_BACKTICK; |
2728 | set_csh(); | |
2729 | TERM(sublex_start()); | |
2730 | ||
2731 | case '\\': | |
2732 | s++; | |
748a9306 LW |
2733 | if (dowarn && lex_inwhat && isDIGIT(*s)) |
2734 | warn("Can't use \\%c to mean $%c in expression", *s, *s); | |
8990e307 LW |
2735 | if (expect == XOPERATOR) |
2736 | no_op("Backslash",s); | |
79072805 LW |
2737 | OPERATOR(REFGEN); |
2738 | ||
2739 | case 'x': | |
2740 | if (isDIGIT(s[1]) && expect == XOPERATOR) { | |
2741 | s++; | |
2742 | Mop(OP_REPEAT); | |
2f3197b3 | 2743 | } |
79072805 LW |
2744 | goto keylookup; |
2745 | ||
378cc40b | 2746 | case '_': |
79072805 LW |
2747 | case 'a': case 'A': |
2748 | case 'b': case 'B': | |
2749 | case 'c': case 'C': | |
2750 | case 'd': case 'D': | |
2751 | case 'e': case 'E': | |
2752 | case 'f': case 'F': | |
2753 | case 'g': case 'G': | |
2754 | case 'h': case 'H': | |
2755 | case 'i': case 'I': | |
2756 | case 'j': case 'J': | |
2757 | case 'k': case 'K': | |
2758 | case 'l': case 'L': | |
2759 | case 'm': case 'M': | |
2760 | case 'n': case 'N': | |
2761 | case 'o': case 'O': | |
2762 | case 'p': case 'P': | |
2763 | case 'q': case 'Q': | |
2764 | case 'r': case 'R': | |
2765 | case 's': case 'S': | |
2766 | case 't': case 'T': | |
2767 | case 'u': case 'U': | |
2768 | case 'v': case 'V': | |
2769 | case 'w': case 'W': | |
2770 | case 'X': | |
2771 | case 'y': case 'Y': | |
2772 | case 'z': case 'Z': | |
2773 | ||
49dc05e3 | 2774 | keylookup: { |
161b471a NIS |
2775 | gv = Nullgv; |
2776 | gvp = 0; | |
49dc05e3 | 2777 | |
748a9306 | 2778 | bufptr = s; |
8903cb82 | 2779 | s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len); |
8ebc5c01 | 2780 | |
2781 | /* Some keywords can be followed by any delimiter, including ':' */ | |
2782 | tmp = (len == 1 && strchr("msyq", tokenbuf[0]) || | |
2783 | len == 2 && ((tokenbuf[0] == 't' && tokenbuf[1] == 'r') || | |
2784 | (tokenbuf[0] == 'q' && | |
2785 | strchr("qwx", tokenbuf[1])))); | |
2786 | ||
2787 | /* x::* is just a word, unless x is "CORE" */ | |
2788 | if (!tmp && *s == ':' && s[1] == ':' && strNE(tokenbuf, "CORE")) | |
4633a7c4 LW |
2789 | goto just_a_word; |
2790 | ||
3643fb5f CS |
2791 | d = s; |
2792 | while (d < bufend && isSPACE(*d)) | |
2793 | d++; /* no comments skipped here, or s### is misparsed */ | |
2794 | ||
2795 | /* Is this a label? */ | |
8ebc5c01 | 2796 | if (!tmp && expect == XSTATE |
2797 | && d < bufend && *d == ':' && *(d + 1) != ':') { | |
2798 | s = d + 1; | |
2799 | yylval.pval = savepv(tokenbuf); | |
2800 | CLINE; | |
2801 | TOKEN(LABEL); | |
3643fb5f CS |
2802 | } |
2803 | ||
2804 | /* Check for keywords */ | |
a0d0e21e | 2805 | tmp = keyword(tokenbuf, len); |
748a9306 LW |
2806 | |
2807 | /* Is this a word before a => operator? */ | |
748a9306 LW |
2808 | if (strnEQ(d,"=>",2)) { |
2809 | CLINE; | |
748a9306 LW |
2810 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(tokenbuf,0)); |
2811 | yylval.opval->op_private = OPpCONST_BARE; | |
2812 | TERM(WORD); | |
2813 | } | |
2814 | ||
a0d0e21e | 2815 | if (tmp < 0) { /* second-class keyword? */ |
49dc05e3 GS |
2816 | if (expect != XOPERATOR && (*s != ':' || s[1] != ':') && |
2817 | (((gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV)) && | |
2818 | GvCVu(gv) && GvIMPORTED_CV(gv)) || | |
2819 | ((gvp = (GV**)hv_fetch(globalstash,tokenbuf,len,FALSE)) && | |
2820 | (gv = *gvp) != (GV*)&sv_undef && | |
2821 | GvCVu(gv) && GvIMPORTED_CV(gv)))) | |
a0d0e21e | 2822 | { |
6e7b2336 GS |
2823 | tmp = 0; /* overridden by importation */ |
2824 | } | |
2825 | else if (gv && !gvp | |
2826 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
1d64a758 | 2827 | && !hv_fetch(GvHVn(incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
2828 | { |
2829 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 2830 | } |
49dc05e3 GS |
2831 | else { |
2832 | tmp = -tmp; gv = Nullgv; gvp = 0; | |
2833 | } | |
a0d0e21e LW |
2834 | } |
2835 | ||
2836 | reserved_word: | |
2837 | switch (tmp) { | |
79072805 LW |
2838 | |
2839 | default: /* not a keyword */ | |
93a17b20 | 2840 | just_a_word: { |
96e4d5b1 | 2841 | SV *sv; |
748a9306 | 2842 | char lastchar = (bufptr == oldoldbufptr ? 0 : bufptr[-1]); |
8990e307 LW |
2843 | |
2844 | /* Get the rest if it looks like a package qualifier */ | |
2845 | ||
a0d0e21e | 2846 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 2847 | STRLEN morelen; |
8903cb82 | 2848 | s = scan_word(s, tokenbuf + len, sizeof tokenbuf - len, |
c3e0f903 GS |
2849 | TRUE, &morelen); |
2850 | if (!morelen) | |
ec2ab091 HM |
2851 | croak("Bad name after %s%s", tokenbuf, |
2852 | *s == '\'' ? "'" : "::"); | |
c3e0f903 | 2853 | len += morelen; |
a0d0e21e | 2854 | } |
8990e307 | 2855 | |
3643fb5f | 2856 | if (expect == XOPERATOR) { |
fd049845 | 2857 | if (bufptr == linestart) { |
463ee0b2 LW |
2858 | curcop->cop_line--; |
2859 | warn(warn_nosemi); | |
2860 | curcop->cop_line++; | |
2861 | } | |
2862 | else | |
54310121 | 2863 | no_op("Bareword",s); |
463ee0b2 | 2864 | } |
8990e307 | 2865 | |
c3e0f903 GS |
2866 | /* Look for a subroutine with this name in current package, |
2867 | unless name is "Foo::", in which case Foo is a bearword | |
2868 | (and a package name). */ | |
2869 | ||
2870 | if (len > 2 && | |
2871 | tokenbuf[len - 2] == ':' && tokenbuf[len - 1] == ':') | |
2872 | { | |
2873 | if (dowarn && ! gv_fetchpv(tokenbuf, FALSE, SVt_PVHV)) | |
2874 | warn("Bareword \"%s\" refers to nonexistent package", | |
2875 | tokenbuf); | |
2876 | len -= 2; | |
2877 | tokenbuf[len] = '\0'; | |
2878 | gv = Nullgv; | |
2879 | gvp = 0; | |
2880 | } | |
2881 | else { | |
2882 | len = 0; | |
2883 | if (!gv) | |
2884 | gv = gv_fetchpv(tokenbuf, FALSE, SVt_PVCV); | |
2885 | } | |
2886 | ||
2887 | /* if we saw a global override before, get the right name */ | |
8990e307 | 2888 | |
49dc05e3 GS |
2889 | if (gvp) { |
2890 | sv = newSVpv("CORE::GLOBAL::",14); | |
2891 | sv_catpv(sv,tokenbuf); | |
2892 | } | |
2893 | else | |
2894 | sv = newSVpv(tokenbuf,0); | |
8990e307 | 2895 | |
a0d0e21e LW |
2896 | /* Presume this is going to be a bareword of some sort. */ |
2897 | ||
2898 | CLINE; | |
49dc05e3 | 2899 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
2900 | yylval.opval->op_private = OPpCONST_BARE; |
2901 | ||
c3e0f903 GS |
2902 | /* And if "Foo::", then that's what it certainly is. */ |
2903 | ||
2904 | if (len) | |
2905 | goto safe_bareword; | |
2906 | ||
8990e307 LW |
2907 | /* See if it's the indirect object for a list operator. */ |
2908 | ||
a0d0e21e LW |
2909 | if (oldoldbufptr && |
2910 | oldoldbufptr < bufptr && | |
2911 | (oldoldbufptr == last_lop || oldoldbufptr == last_uni) && | |
2912 | /* NO SKIPSPACE BEFORE HERE! */ | |
2913 | (expect == XREF || | |
4e35701f | 2914 | ((opargs[last_lop_op] >> OASHIFT)& 7) == OA_FILEREF) ) |
a0d0e21e | 2915 | { |
748a9306 LW |
2916 | bool immediate_paren = *s == '('; |
2917 | ||
a0d0e21e LW |
2918 | /* (Now we can afford to cross potential line boundary.) */ |
2919 | s = skipspace(s); | |
2920 | ||
2921 | /* Two barewords in a row may indicate method call. */ | |
2922 | ||
2923 | if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv))) | |
2924 | return tmp; | |
2925 | ||
2926 | /* If not a declared subroutine, it's an indirect object. */ | |
2927 | /* (But it's an indir obj regardless for sort.) */ | |
2928 | ||
8e07c86e | 2929 | if ((last_lop_op == OP_SORT || |
8ebc5c01 | 2930 | (!immediate_paren && (!gv || !GvCVu(gv))) ) && |
8e07c86e | 2931 | (last_lop_op != OP_MAPSTART && last_lop_op != OP_GREPSTART)){ |
748a9306 LW |
2932 | expect = (last_lop == oldoldbufptr) ? XTERM : XOPERATOR; |
2933 | goto bareword; | |
93a17b20 LW |
2934 | } |
2935 | } | |
8990e307 LW |
2936 | |
2937 | /* If followed by a paren, it's certainly a subroutine. */ | |
2938 | ||
2939 | expect = XOPERATOR; | |
2940 | s = skipspace(s); | |
93a17b20 | 2941 | if (*s == '(') { |
79072805 | 2942 | CLINE; |
96e4d5b1 | 2943 | if (gv && GvCVu(gv)) { |
2944 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
2945 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { | |
2946 | s = d + 1; | |
2947 | goto its_constant; | |
2948 | } | |
2949 | } | |
a0d0e21e | 2950 | nextval[nexttoke].opval = yylval.opval; |
463ee0b2 | 2951 | expect = XOPERATOR; |
93a17b20 | 2952 | force_next(WORD); |
c07a80fd | 2953 | yylval.ival = 0; |
463ee0b2 | 2954 | TOKEN('&'); |
79072805 | 2955 | } |
93a17b20 | 2956 | |
a0d0e21e | 2957 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 2958 | |
8ebc5c01 | 2959 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
463ee0b2 | 2960 | last_lop = oldbufptr; |
8990e307 | 2961 | last_lop_op = OP_METHOD; |
93a17b20 | 2962 | PREBLOCK(METHOD); |
463ee0b2 LW |
2963 | } |
2964 | ||
8990e307 LW |
2965 | /* If followed by a bareword, see if it looks like indir obj. */ |
2966 | ||
a0d0e21e LW |
2967 | if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv))) |
2968 | return tmp; | |
93a17b20 | 2969 | |
8990e307 LW |
2970 | /* Not a method, so call it a subroutine (if defined) */ |
2971 | ||
8ebc5c01 | 2972 | if (gv && GvCVu(gv)) { |
46fc3d4c | 2973 | CV* cv; |
748a9306 | 2974 | if (lastchar == '-') |
c2960299 | 2975 | warn("Ambiguous use of -%s resolved as -&%s()", |
748a9306 | 2976 | tokenbuf, tokenbuf); |
8990e307 | 2977 | last_lop = oldbufptr; |
a0d0e21e | 2978 | last_lop_op = OP_ENTERSUB; |
89bfa8cd | 2979 | /* Check for a constant sub */ |
46fc3d4c | 2980 | cv = GvCV(gv); |
96e4d5b1 | 2981 | if ((sv = cv_const_sv(cv))) { |
2982 | its_constant: | |
2983 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
2984 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
2985 | yylval.opval->op_private = 0; | |
2986 | TOKEN(WORD); | |
89bfa8cd | 2987 | } |
2988 | ||
a5f75d66 AD |
2989 | /* Resolve to GV now. */ |
2990 | op_free(yylval.opval); | |
2991 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
4633a7c4 LW |
2992 | /* Is there a prototype? */ |
2993 | if (SvPOK(cv)) { | |
2994 | STRLEN len; | |
2995 | char *proto = SvPV((SV*)cv, len); | |
2996 | if (!len) | |
2997 | TERM(FUNC0SUB); | |
2998 | if (strEQ(proto, "$")) | |
2999 | OPERATOR(UNIOPSUB); | |
3000 | if (*proto == '&' && *s == '{') { | |
3001 | sv_setpv(subname,"__ANON__"); | |
3002 | PREBLOCK(LSTOPSUB); | |
3003 | } | |
3004 | } | |
a5f75d66 | 3005 | nextval[nexttoke].opval = yylval.opval; |
8990e307 LW |
3006 | expect = XTERM; |
3007 | force_next(WORD); | |
3008 | TOKEN(NOAMP); | |
3009 | } | |
748a9306 LW |
3010 | |
3011 | if (hints & HINT_STRICT_SUBS && | |
3012 | lastchar != '-' && | |
a0d0e21e | 3013 | strnNE(s,"->",2) && |
9b01e405 | 3014 | last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */ |
a0d0e21e LW |
3015 | last_lop_op != OP_ACCEPT && |
3016 | last_lop_op != OP_PIPE_OP && | |
3017 | last_lop_op != OP_SOCKPAIR) | |
3018 | { | |
3019 | warn( | |
3020 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
85e6fe83 LW |
3021 | tokenbuf); |
3022 | ++error_count; | |
3023 | } | |
8990e307 LW |
3024 | |
3025 | /* Call it a bare word */ | |
3026 | ||
748a9306 LW |
3027 | bareword: |
3028 | if (dowarn) { | |
3029 | if (lastchar != '-') { | |
3030 | for (d = tokenbuf; *d && isLOWER(*d); d++) ; | |
3031 | if (!*d) | |
3032 | warn(warn_reserved, tokenbuf); | |
3033 | } | |
3034 | } | |
c3e0f903 GS |
3035 | |
3036 | safe_bareword: | |
748a9306 LW |
3037 | if (lastchar && strchr("*%&", lastchar)) { |
3038 | warn("Operator or semicolon missing before %c%s", | |
3039 | lastchar, tokenbuf); | |
c2960299 | 3040 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3041 | lastchar, lastchar); |
3042 | } | |
93a17b20 | 3043 | TOKEN(WORD); |
79072805 | 3044 | } |
79072805 | 3045 | |
68dc0745 | 3046 | case KEY___FILE__: |
46fc3d4c | 3047 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3048 | newSVsv(GvSV(curcop->cop_filegv))); | |
3049 | TERM(THING); | |
3050 | ||
79072805 | 3051 | case KEY___LINE__: |
46fc3d4c | 3052 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3053 | newSVpvf("%ld", (long)curcop->cop_line)); | |
79072805 | 3054 | TERM(THING); |
68dc0745 | 3055 | |
3056 | case KEY___PACKAGE__: | |
3057 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3058 | (curstash | |
3059 | ? newSVsv(curstname) | |
3060 | : &sv_undef)); | |
79072805 | 3061 | TERM(THING); |
79072805 | 3062 | |
e50aee73 | 3063 | case KEY___DATA__: |
79072805 LW |
3064 | case KEY___END__: { |
3065 | GV *gv; | |
79072805 LW |
3066 | |
3067 | /*SUPPRESS 560*/ | |
a5f75d66 | 3068 | if (rsfp && (!in_eval || tokenbuf[2] == 'D')) { |
e50aee73 AD |
3069 | char *pname = "main"; |
3070 | if (tokenbuf[2] == 'D') | |
3071 | pname = HvNAME(curstash ? curstash : defstash); | |
46fc3d4c | 3072 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3073 | GvMULTI_on(gv); |
79072805 | 3074 | if (!GvIO(gv)) |
a0d0e21e LW |
3075 | GvIOp(gv) = newIO(); |
3076 | IoIFP(GvIOp(gv)) = rsfp; | |
3077 | #if defined(HAS_FCNTL) && defined(F_SETFD) | |
3078 | { | |
760ac839 | 3079 | int fd = PerlIO_fileno(rsfp); |
a0d0e21e LW |
3080 | fcntl(fd,F_SETFD,fd >= 3); |
3081 | } | |
79072805 | 3082 | #endif |
fd049845 | 3083 | /* Mark this internal pseudo-handle as clean */ |
3084 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
79072805 | 3085 | if (preprocess) |
a0d0e21e | 3086 | IoTYPE(GvIOp(gv)) = '|'; |
760ac839 | 3087 | else if ((PerlIO*)rsfp == PerlIO_stdin()) |
a0d0e21e | 3088 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3089 | else |
a0d0e21e | 3090 | IoTYPE(GvIOp(gv)) = '<'; |
79072805 LW |
3091 | rsfp = Nullfp; |
3092 | } | |
3093 | goto fake_eof; | |
e929a76b | 3094 | } |
de3bb511 | 3095 | |
8990e307 | 3096 | case KEY_AUTOLOAD: |
ed6116ce | 3097 | case KEY_DESTROY: |
79072805 LW |
3098 | case KEY_BEGIN: |
3099 | case KEY_END: | |
7d07dbc2 | 3100 | case KEY_INIT: |
a0d0e21e | 3101 | if (expect == XSTATE) { |
93a17b20 LW |
3102 | s = bufptr; |
3103 | goto really_sub; | |
79072805 LW |
3104 | } |
3105 | goto just_a_word; | |
3106 | ||
a0d0e21e LW |
3107 | case KEY_CORE: |
3108 | if (*s == ':' && s[1] == ':') { | |
3109 | s += 2; | |
748a9306 | 3110 | d = s; |
8903cb82 | 3111 | s = scan_word(s, tokenbuf, sizeof tokenbuf, FALSE, &len); |
a0d0e21e LW |
3112 | tmp = keyword(tokenbuf, len); |
3113 | if (tmp < 0) | |
3114 | tmp = -tmp; | |
3115 | goto reserved_word; | |
3116 | } | |
3117 | goto just_a_word; | |
3118 | ||
463ee0b2 LW |
3119 | case KEY_abs: |
3120 | UNI(OP_ABS); | |
3121 | ||
79072805 LW |
3122 | case KEY_alarm: |
3123 | UNI(OP_ALARM); | |
3124 | ||
3125 | case KEY_accept: | |
a0d0e21e | 3126 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3127 | |
463ee0b2 LW |
3128 | case KEY_and: |
3129 | OPERATOR(ANDOP); | |
3130 | ||
79072805 | 3131 | case KEY_atan2: |
a0d0e21e | 3132 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3133 | |
79072805 | 3134 | case KEY_bind: |
a0d0e21e | 3135 | LOP(OP_BIND,XTERM); |
79072805 LW |
3136 | |
3137 | case KEY_binmode: | |
3138 | UNI(OP_BINMODE); | |
3139 | ||
3140 | case KEY_bless: | |
a0d0e21e | 3141 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3142 | |
3143 | case KEY_chop: | |
3144 | UNI(OP_CHOP); | |
3145 | ||
3146 | case KEY_continue: | |
3147 | PREBLOCK(CONTINUE); | |
3148 | ||
3149 | case KEY_chdir: | |
85e6fe83 | 3150 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3151 | UNI(OP_CHDIR); |
3152 | ||
3153 | case KEY_close: | |
3154 | UNI(OP_CLOSE); | |
3155 | ||
3156 | case KEY_closedir: | |
3157 | UNI(OP_CLOSEDIR); | |
3158 | ||
3159 | case KEY_cmp: | |
3160 | Eop(OP_SCMP); | |
3161 | ||
3162 | case KEY_caller: | |
3163 | UNI(OP_CALLER); | |
3164 | ||
3165 | case KEY_crypt: | |
3166 | #ifdef FCRYPT | |
de3bb511 LW |
3167 | if (!cryptseen++) |
3168 | init_des(); | |
a687059c | 3169 | #endif |
a0d0e21e | 3170 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3171 | |
3172 | case KEY_chmod: | |
748a9306 LW |
3173 | if (dowarn) { |
3174 | for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ; | |
3175 | if (*d != '0' && isDIGIT(*d)) | |
3176 | yywarn("chmod: mode argument is missing initial 0"); | |
3177 | } | |
a0d0e21e | 3178 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3179 | |
3180 | case KEY_chown: | |
a0d0e21e | 3181 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3182 | |
3183 | case KEY_connect: | |
a0d0e21e | 3184 | LOP(OP_CONNECT,XTERM); |
79072805 | 3185 | |
463ee0b2 LW |
3186 | case KEY_chr: |
3187 | UNI(OP_CHR); | |
3188 | ||
79072805 LW |
3189 | case KEY_cos: |
3190 | UNI(OP_COS); | |
3191 | ||
3192 | case KEY_chroot: | |
3193 | UNI(OP_CHROOT); | |
3194 | ||
3195 | case KEY_do: | |
3196 | s = skipspace(s); | |
3197 | if (*s == '{') | |
a0d0e21e | 3198 | PRETERMBLOCK(DO); |
79072805 | 3199 | if (*s != '\'') |
a0d0e21e | 3200 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3201 | OPERATOR(DO); |
79072805 LW |
3202 | |
3203 | case KEY_die: | |
a0d0e21e LW |
3204 | hints |= HINT_BLOCK_SCOPE; |
3205 | LOP(OP_DIE,XTERM); | |
79072805 LW |
3206 | |
3207 | case KEY_defined: | |
3208 | UNI(OP_DEFINED); | |
3209 | ||
3210 | case KEY_delete: | |
a0d0e21e | 3211 | UNI(OP_DELETE); |
79072805 LW |
3212 | |
3213 | case KEY_dbmopen: | |
a0d0e21e LW |
3214 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3215 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3216 | |
3217 | case KEY_dbmclose: | |
3218 | UNI(OP_DBMCLOSE); | |
3219 | ||
3220 | case KEY_dump: | |
a0d0e21e | 3221 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3222 | LOOPX(OP_DUMP); |
3223 | ||
3224 | case KEY_else: | |
3225 | PREBLOCK(ELSE); | |
3226 | ||
3227 | case KEY_elsif: | |
3228 | yylval.ival = curcop->cop_line; | |
3229 | OPERATOR(ELSIF); | |
3230 | ||
3231 | case KEY_eq: | |
3232 | Eop(OP_SEQ); | |
3233 | ||
a0d0e21e LW |
3234 | case KEY_exists: |
3235 | UNI(OP_EXISTS); | |
3236 | ||
79072805 LW |
3237 | case KEY_exit: |
3238 | UNI(OP_EXIT); | |
3239 | ||
3240 | case KEY_eval: | |
79072805 | 3241 | s = skipspace(s); |
a0d0e21e | 3242 | expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3243 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3244 | |
3245 | case KEY_eof: | |
3246 | UNI(OP_EOF); | |
3247 | ||
3248 | case KEY_exp: | |
3249 | UNI(OP_EXP); | |
3250 | ||
3251 | case KEY_each: | |
3252 | UNI(OP_EACH); | |
3253 | ||
3254 | case KEY_exec: | |
3255 | set_csh(); | |
a0d0e21e | 3256 | LOP(OP_EXEC,XREF); |
79072805 LW |
3257 | |
3258 | case KEY_endhostent: | |
3259 | FUN0(OP_EHOSTENT); | |
3260 | ||
3261 | case KEY_endnetent: | |
3262 | FUN0(OP_ENETENT); | |
3263 | ||
3264 | case KEY_endservent: | |
3265 | FUN0(OP_ESERVENT); | |
3266 | ||
3267 | case KEY_endprotoent: | |
3268 | FUN0(OP_EPROTOENT); | |
3269 | ||
3270 | case KEY_endpwent: | |
3271 | FUN0(OP_EPWENT); | |
3272 | ||
3273 | case KEY_endgrent: | |
3274 | FUN0(OP_EGRENT); | |
3275 | ||
3276 | case KEY_for: | |
3277 | case KEY_foreach: | |
3278 | yylval.ival = curcop->cop_line; | |
55497cff | 3279 | s = skipspace(s); |
ecca16b0 | 3280 | if (expect == XSTATE && isIDFIRST(*s)) { |
55497cff | 3281 | char *p = s; |
3282 | if ((bufend - p) >= 3 && | |
3283 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) | |
3284 | p += 2; | |
3285 | p = skipspace(p); | |
3286 | if (isIDFIRST(*p)) | |
3287 | croak("Missing $ on loop variable"); | |
3288 | } | |
79072805 LW |
3289 | OPERATOR(FOR); |
3290 | ||
3291 | case KEY_formline: | |
a0d0e21e | 3292 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3293 | |
3294 | case KEY_fork: | |
3295 | FUN0(OP_FORK); | |
3296 | ||
3297 | case KEY_fcntl: | |
a0d0e21e | 3298 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3299 | |
3300 | case KEY_fileno: | |
3301 | UNI(OP_FILENO); | |
3302 | ||
3303 | case KEY_flock: | |
a0d0e21e | 3304 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3305 | |
3306 | case KEY_gt: | |
3307 | Rop(OP_SGT); | |
3308 | ||
3309 | case KEY_ge: | |
3310 | Rop(OP_SGE); | |
3311 | ||
3312 | case KEY_grep: | |
a0d0e21e | 3313 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3314 | |
3315 | case KEY_goto: | |
a0d0e21e | 3316 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3317 | LOOPX(OP_GOTO); |
3318 | ||
3319 | case KEY_gmtime: | |
3320 | UNI(OP_GMTIME); | |
3321 | ||
3322 | case KEY_getc: | |
3323 | UNI(OP_GETC); | |
3324 | ||
3325 | case KEY_getppid: | |
3326 | FUN0(OP_GETPPID); | |
3327 | ||
3328 | case KEY_getpgrp: | |
3329 | UNI(OP_GETPGRP); | |
3330 | ||
3331 | case KEY_getpriority: | |
a0d0e21e | 3332 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3333 | |
3334 | case KEY_getprotobyname: | |
3335 | UNI(OP_GPBYNAME); | |
3336 | ||
3337 | case KEY_getprotobynumber: | |
a0d0e21e | 3338 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3339 | |
3340 | case KEY_getprotoent: | |
3341 | FUN0(OP_GPROTOENT); | |
3342 | ||
3343 | case KEY_getpwent: | |
3344 | FUN0(OP_GPWENT); | |
3345 | ||
3346 | case KEY_getpwnam: | |
ff68c719 | 3347 | UNI(OP_GPWNAM); |
79072805 LW |
3348 | |
3349 | case KEY_getpwuid: | |
ff68c719 | 3350 | UNI(OP_GPWUID); |
79072805 LW |
3351 | |
3352 | case KEY_getpeername: | |
3353 | UNI(OP_GETPEERNAME); | |
3354 | ||
3355 | case KEY_gethostbyname: | |
3356 | UNI(OP_GHBYNAME); | |
3357 | ||
3358 | case KEY_gethostbyaddr: | |
a0d0e21e | 3359 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
3360 | |
3361 | case KEY_gethostent: | |
3362 | FUN0(OP_GHOSTENT); | |
3363 | ||
3364 | case KEY_getnetbyname: | |
3365 | UNI(OP_GNBYNAME); | |
3366 | ||
3367 | case KEY_getnetbyaddr: | |
a0d0e21e | 3368 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
3369 | |
3370 | case KEY_getnetent: | |
3371 | FUN0(OP_GNETENT); | |
3372 | ||
3373 | case KEY_getservbyname: | |
a0d0e21e | 3374 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
3375 | |
3376 | case KEY_getservbyport: | |
a0d0e21e | 3377 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
3378 | |
3379 | case KEY_getservent: | |
3380 | FUN0(OP_GSERVENT); | |
3381 | ||
3382 | case KEY_getsockname: | |
3383 | UNI(OP_GETSOCKNAME); | |
3384 | ||
3385 | case KEY_getsockopt: | |
a0d0e21e | 3386 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
3387 | |
3388 | case KEY_getgrent: | |
3389 | FUN0(OP_GGRENT); | |
3390 | ||
3391 | case KEY_getgrnam: | |
ff68c719 | 3392 | UNI(OP_GGRNAM); |
79072805 LW |
3393 | |
3394 | case KEY_getgrgid: | |
ff68c719 | 3395 | UNI(OP_GGRGID); |
79072805 LW |
3396 | |
3397 | case KEY_getlogin: | |
3398 | FUN0(OP_GETLOGIN); | |
3399 | ||
93a17b20 | 3400 | case KEY_glob: |
a0d0e21e LW |
3401 | set_csh(); |
3402 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 3403 | |
79072805 LW |
3404 | case KEY_hex: |
3405 | UNI(OP_HEX); | |
3406 | ||
3407 | case KEY_if: | |
3408 | yylval.ival = curcop->cop_line; | |
3409 | OPERATOR(IF); | |
3410 | ||
3411 | case KEY_index: | |
a0d0e21e | 3412 | LOP(OP_INDEX,XTERM); |
79072805 LW |
3413 | |
3414 | case KEY_int: | |
3415 | UNI(OP_INT); | |
3416 | ||
3417 | case KEY_ioctl: | |
a0d0e21e | 3418 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
3419 | |
3420 | case KEY_join: | |
a0d0e21e | 3421 | LOP(OP_JOIN,XTERM); |
79072805 LW |
3422 | |
3423 | case KEY_keys: | |
3424 | UNI(OP_KEYS); | |
3425 | ||
3426 | case KEY_kill: | |
a0d0e21e | 3427 | LOP(OP_KILL,XTERM); |
79072805 LW |
3428 | |
3429 | case KEY_last: | |
a0d0e21e | 3430 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 3431 | LOOPX(OP_LAST); |
a0d0e21e | 3432 | |
79072805 LW |
3433 | case KEY_lc: |
3434 | UNI(OP_LC); | |
3435 | ||
3436 | case KEY_lcfirst: | |
3437 | UNI(OP_LCFIRST); | |
3438 | ||
3439 | case KEY_local: | |
3440 | OPERATOR(LOCAL); | |
3441 | ||
3442 | case KEY_length: | |
3443 | UNI(OP_LENGTH); | |
3444 | ||
3445 | case KEY_lt: | |
3446 | Rop(OP_SLT); | |
3447 | ||
3448 | case KEY_le: | |
3449 | Rop(OP_SLE); | |
3450 | ||
3451 | case KEY_localtime: | |
3452 | UNI(OP_LOCALTIME); | |
3453 | ||
3454 | case KEY_log: | |
3455 | UNI(OP_LOG); | |
3456 | ||
3457 | case KEY_link: | |
a0d0e21e | 3458 | LOP(OP_LINK,XTERM); |
79072805 LW |
3459 | |
3460 | case KEY_listen: | |
a0d0e21e | 3461 | LOP(OP_LISTEN,XTERM); |
79072805 | 3462 | |
c0329465 MB |
3463 | case KEY_lock: |
3464 | UNI(OP_LOCK); | |
3465 | ||
79072805 LW |
3466 | case KEY_lstat: |
3467 | UNI(OP_LSTAT); | |
3468 | ||
3469 | case KEY_m: | |
3470 | s = scan_pat(s); | |
3471 | TERM(sublex_start()); | |
3472 | ||
a0d0e21e LW |
3473 | case KEY_map: |
3474 | LOP(OP_MAPSTART,XREF); | |
3475 | ||
79072805 | 3476 | case KEY_mkdir: |
a0d0e21e | 3477 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
3478 | |
3479 | case KEY_msgctl: | |
a0d0e21e | 3480 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
3481 | |
3482 | case KEY_msgget: | |
a0d0e21e | 3483 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
3484 | |
3485 | case KEY_msgrcv: | |
a0d0e21e | 3486 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
3487 | |
3488 | case KEY_msgsnd: | |
a0d0e21e | 3489 | LOP(OP_MSGSND,XTERM); |
79072805 | 3490 | |
93a17b20 LW |
3491 | case KEY_my: |
3492 | in_my = TRUE; | |
c750a3ec MB |
3493 | s = skipspace(s); |
3494 | if (isIDFIRST(*s)) { | |
97fcbf96 | 3495 | s = scan_word(s, tokenbuf, sizeof tokenbuf, TRUE, &len); |
c750a3ec MB |
3496 | in_my_stash = gv_stashpv(tokenbuf, FALSE); |
3497 | if (!in_my_stash) { | |
3498 | char tmpbuf[1024]; | |
3499 | bufptr = s; | |
3500 | sprintf(tmpbuf, "No such class %.1000s", tokenbuf); | |
3501 | yyerror(tmpbuf); | |
3502 | } | |
3503 | } | |
55497cff | 3504 | OPERATOR(MY); |
93a17b20 | 3505 | |
79072805 | 3506 | case KEY_next: |
a0d0e21e | 3507 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3508 | LOOPX(OP_NEXT); |
3509 | ||
3510 | case KEY_ne: | |
3511 | Eop(OP_SNE); | |
3512 | ||
a0d0e21e LW |
3513 | case KEY_no: |
3514 | if (expect != XSTATE) | |
3515 | yyerror("\"no\" not allowed in expression"); | |
3516 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 3517 | s = force_version(s); |
a0d0e21e LW |
3518 | yylval.ival = 0; |
3519 | OPERATOR(USE); | |
3520 | ||
3521 | case KEY_not: | |
3522 | OPERATOR(NOTOP); | |
3523 | ||
79072805 | 3524 | case KEY_open: |
93a17b20 LW |
3525 | s = skipspace(s); |
3526 | if (isIDFIRST(*s)) { | |
3527 | char *t; | |
3528 | for (d = s; isALNUM(*d); d++) ; | |
3529 | t = skipspace(d); | |
3530 | if (strchr("|&*+-=!?:.", *t)) | |
3531 | warn("Precedence problem: open %.*s should be open(%.*s)", | |
3532 | d-s,s, d-s,s); | |
3533 | } | |
a0d0e21e | 3534 | LOP(OP_OPEN,XTERM); |
79072805 | 3535 | |
463ee0b2 | 3536 | case KEY_or: |
a0d0e21e | 3537 | yylval.ival = OP_OR; |
463ee0b2 LW |
3538 | OPERATOR(OROP); |
3539 | ||
79072805 LW |
3540 | case KEY_ord: |
3541 | UNI(OP_ORD); | |
3542 | ||
3543 | case KEY_oct: | |
3544 | UNI(OP_OCT); | |
3545 | ||
3546 | case KEY_opendir: | |
a0d0e21e | 3547 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
3548 | |
3549 | case KEY_print: | |
3550 | checkcomma(s,tokenbuf,"filehandle"); | |
a0d0e21e | 3551 | LOP(OP_PRINT,XREF); |
79072805 LW |
3552 | |
3553 | case KEY_printf: | |
3554 | checkcomma(s,tokenbuf,"filehandle"); | |
a0d0e21e | 3555 | LOP(OP_PRTF,XREF); |
79072805 | 3556 | |
c07a80fd | 3557 | case KEY_prototype: |
3558 | UNI(OP_PROTOTYPE); | |
3559 | ||
79072805 | 3560 | case KEY_push: |
a0d0e21e | 3561 | LOP(OP_PUSH,XTERM); |
79072805 LW |
3562 | |
3563 | case KEY_pop: | |
3564 | UNI(OP_POP); | |
3565 | ||
a0d0e21e LW |
3566 | case KEY_pos: |
3567 | UNI(OP_POS); | |
3568 | ||
79072805 | 3569 | case KEY_pack: |
a0d0e21e | 3570 | LOP(OP_PACK,XTERM); |
79072805 LW |
3571 | |
3572 | case KEY_package: | |
a0d0e21e | 3573 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
3574 | OPERATOR(PACKAGE); |
3575 | ||
3576 | case KEY_pipe: | |
a0d0e21e | 3577 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
3578 | |
3579 | case KEY_q: | |
3580 | s = scan_str(s); | |
3581 | if (!s) | |
85e6fe83 | 3582 | missingterm((char*)0); |
79072805 LW |
3583 | yylval.ival = OP_CONST; |
3584 | TERM(sublex_start()); | |
3585 | ||
a0d0e21e LW |
3586 | case KEY_quotemeta: |
3587 | UNI(OP_QUOTEMETA); | |
3588 | ||
8990e307 LW |
3589 | case KEY_qw: |
3590 | s = scan_str(s); | |
3591 | if (!s) | |
85e6fe83 | 3592 | missingterm((char*)0); |
55497cff | 3593 | if (dowarn && SvLEN(lex_stuff)) { |
3594 | d = SvPV_force(lex_stuff, len); | |
3595 | for (; len; --len, ++d) { | |
3596 | if (*d == ',') { | |
3597 | warn("Possible attempt to separate words with commas"); | |
3598 | break; | |
3599 | } | |
3600 | if (*d == '#') { | |
3601 | warn("Possible attempt to put comments in qw() list"); | |
3602 | break; | |
3603 | } | |
3604 | } | |
3605 | } | |
8990e307 LW |
3606 | force_next(')'); |
3607 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, q(lex_stuff)); | |
3608 | lex_stuff = Nullsv; | |
3609 | force_next(THING); | |
3610 | force_next(','); | |
3611 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1)); | |
3612 | force_next(THING); | |
3613 | force_next('('); | |
a0d0e21e LW |
3614 | yylval.ival = OP_SPLIT; |
3615 | CLINE; | |
3616 | expect = XTERM; | |
3617 | bufptr = s; | |
3618 | last_lop = oldbufptr; | |
3619 | last_lop_op = OP_SPLIT; | |
3620 | return FUNC; | |
8990e307 | 3621 | |
79072805 LW |
3622 | case KEY_qq: |
3623 | s = scan_str(s); | |
3624 | if (!s) | |
85e6fe83 | 3625 | missingterm((char*)0); |
a0d0e21e | 3626 | yylval.ival = OP_STRINGIFY; |
ed6116ce LW |
3627 | if (SvIVX(lex_stuff) == '\'') |
3628 | SvIVX(lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
3629 | TERM(sublex_start()); |
3630 | ||
3631 | case KEY_qx: | |
3632 | s = scan_str(s); | |
3633 | if (!s) | |
85e6fe83 | 3634 | missingterm((char*)0); |
79072805 LW |
3635 | yylval.ival = OP_BACKTICK; |
3636 | set_csh(); | |
3637 | TERM(sublex_start()); | |
3638 | ||
3639 | case KEY_return: | |
3640 | OLDLOP(OP_RETURN); | |
3641 | ||
3642 | case KEY_require: | |
748a9306 | 3643 | *tokenbuf = '\0'; |
a0d0e21e | 3644 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
748a9306 | 3645 | if (isIDFIRST(*tokenbuf)) |
89bfa8cd | 3646 | gv_stashpvn(tokenbuf, strlen(tokenbuf), TRUE); |
748a9306 | 3647 | else if (*s == '<') |
a0d0e21e | 3648 | yyerror("<> should be quotes"); |
463ee0b2 | 3649 | UNI(OP_REQUIRE); |
79072805 LW |
3650 | |
3651 | case KEY_reset: | |
3652 | UNI(OP_RESET); | |
3653 | ||
3654 | case KEY_redo: | |
a0d0e21e | 3655 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3656 | LOOPX(OP_REDO); |
3657 | ||
3658 | case KEY_rename: | |
a0d0e21e | 3659 | LOP(OP_RENAME,XTERM); |
79072805 LW |
3660 | |
3661 | case KEY_rand: | |
3662 | UNI(OP_RAND); | |
3663 | ||
3664 | case KEY_rmdir: | |
3665 | UNI(OP_RMDIR); | |
3666 | ||
3667 | case KEY_rindex: | |
a0d0e21e | 3668 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
3669 | |
3670 | case KEY_read: | |
a0d0e21e | 3671 | LOP(OP_READ,XTERM); |
79072805 LW |
3672 | |
3673 | case KEY_readdir: | |
3674 | UNI(OP_READDIR); | |
3675 | ||
93a17b20 LW |
3676 | case KEY_readline: |
3677 | set_csh(); | |
3678 | UNI(OP_READLINE); | |
3679 | ||
3680 | case KEY_readpipe: | |
3681 | set_csh(); | |
3682 | UNI(OP_BACKTICK); | |
3683 | ||
79072805 LW |
3684 | case KEY_rewinddir: |
3685 | UNI(OP_REWINDDIR); | |
3686 | ||
3687 | case KEY_recv: | |
a0d0e21e | 3688 | LOP(OP_RECV,XTERM); |
79072805 LW |
3689 | |
3690 | case KEY_reverse: | |
a0d0e21e | 3691 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
3692 | |
3693 | case KEY_readlink: | |
3694 | UNI(OP_READLINK); | |
3695 | ||
3696 | case KEY_ref: | |
3697 | UNI(OP_REF); | |
3698 | ||
3699 | case KEY_s: | |
3700 | s = scan_subst(s); | |
3701 | if (yylval.opval) | |
3702 | TERM(sublex_start()); | |
3703 | else | |
3704 | TOKEN(1); /* force error */ | |
3705 | ||
a0d0e21e LW |
3706 | case KEY_chomp: |
3707 | UNI(OP_CHOMP); | |
3708 | ||
79072805 LW |
3709 | case KEY_scalar: |
3710 | UNI(OP_SCALAR); | |
3711 | ||
3712 | case KEY_select: | |
a0d0e21e | 3713 | LOP(OP_SELECT,XTERM); |
79072805 LW |
3714 | |
3715 | case KEY_seek: | |
a0d0e21e | 3716 | LOP(OP_SEEK,XTERM); |
79072805 LW |
3717 | |
3718 | case KEY_semctl: | |
a0d0e21e | 3719 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
3720 | |
3721 | case KEY_semget: | |
a0d0e21e | 3722 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
3723 | |
3724 | case KEY_semop: | |
a0d0e21e | 3725 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
3726 | |
3727 | case KEY_send: | |
a0d0e21e | 3728 | LOP(OP_SEND,XTERM); |
79072805 LW |
3729 | |
3730 | case KEY_setpgrp: | |
a0d0e21e | 3731 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
3732 | |
3733 | case KEY_setpriority: | |
a0d0e21e | 3734 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
3735 | |
3736 | case KEY_sethostent: | |
ff68c719 | 3737 | UNI(OP_SHOSTENT); |
79072805 LW |
3738 | |
3739 | case KEY_setnetent: | |
ff68c719 | 3740 | UNI(OP_SNETENT); |
79072805 LW |
3741 | |
3742 | case KEY_setservent: | |
ff68c719 | 3743 | UNI(OP_SSERVENT); |
79072805 LW |
3744 | |
3745 | case KEY_setprotoent: | |
ff68c719 | 3746 | UNI(OP_SPROTOENT); |
79072805 LW |
3747 | |
3748 | case KEY_setpwent: | |
3749 | FUN0(OP_SPWENT); | |
3750 | ||
3751 | case KEY_setgrent: | |
3752 | FUN0(OP_SGRENT); | |
3753 | ||
3754 | case KEY_seekdir: | |
a0d0e21e | 3755 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
3756 | |
3757 | case KEY_setsockopt: | |
a0d0e21e | 3758 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
3759 | |
3760 | case KEY_shift: | |
3761 | UNI(OP_SHIFT); | |
3762 | ||
3763 | case KEY_shmctl: | |
a0d0e21e | 3764 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
3765 | |
3766 | case KEY_shmget: | |
a0d0e21e | 3767 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
3768 | |
3769 | case KEY_shmread: | |
a0d0e21e | 3770 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
3771 | |
3772 | case KEY_shmwrite: | |
a0d0e21e | 3773 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
3774 | |
3775 | case KEY_shutdown: | |
a0d0e21e | 3776 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
3777 | |
3778 | case KEY_sin: | |
3779 | UNI(OP_SIN); | |
3780 | ||
3781 | case KEY_sleep: | |
3782 | UNI(OP_SLEEP); | |
3783 | ||
3784 | case KEY_socket: | |
a0d0e21e | 3785 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
3786 | |
3787 | case KEY_socketpair: | |
a0d0e21e | 3788 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
3789 | |
3790 | case KEY_sort: | |
3791 | checkcomma(s,tokenbuf,"subroutine name"); | |
3792 | s = skipspace(s); | |
3793 | if (*s == ';' || *s == ')') /* probably a close */ | |
463ee0b2 LW |
3794 | croak("sort is now a reserved word"); |
3795 | expect = XTERM; | |
15f0808c | 3796 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 3797 | LOP(OP_SORT,XREF); |
79072805 LW |
3798 | |
3799 | case KEY_split: | |
a0d0e21e | 3800 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
3801 | |
3802 | case KEY_sprintf: | |
a0d0e21e | 3803 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
3804 | |
3805 | case KEY_splice: | |
a0d0e21e | 3806 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
3807 | |
3808 | case KEY_sqrt: | |
3809 | UNI(OP_SQRT); | |
3810 | ||
3811 | case KEY_srand: | |
3812 | UNI(OP_SRAND); | |
3813 | ||
3814 | case KEY_stat: | |
3815 | UNI(OP_STAT); | |
3816 | ||
3817 | case KEY_study: | |
3818 | sawstudy++; | |
3819 | UNI(OP_STUDY); | |
3820 | ||
3821 | case KEY_substr: | |
a0d0e21e | 3822 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
3823 | |
3824 | case KEY_format: | |
3825 | case KEY_sub: | |
93a17b20 | 3826 | really_sub: |
79072805 | 3827 | s = skipspace(s); |
4633a7c4 | 3828 | |
463ee0b2 | 3829 | if (isIDFIRST(*s) || *s == '\'' || *s == ':') { |
8903cb82 | 3830 | char tmpbuf[sizeof tokenbuf]; |
4633a7c4 | 3831 | expect = XBLOCK; |
8903cb82 | 3832 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
463ee0b2 LW |
3833 | if (strchr(tmpbuf, ':')) |
3834 | sv_setpv(subname, tmpbuf); | |
3835 | else { | |
3836 | sv_setsv(subname,curstname); | |
8990e307 | 3837 | sv_catpvn(subname,"::",2); |
463ee0b2 LW |
3838 | sv_catpvn(subname,tmpbuf,len); |
3839 | } | |
a0d0e21e | 3840 | s = force_word(s,WORD,FALSE,TRUE,TRUE); |
4633a7c4 | 3841 | s = skipspace(s); |
79072805 | 3842 | } |
4633a7c4 LW |
3843 | else { |
3844 | expect = XTERMBLOCK; | |
79072805 | 3845 | sv_setpv(subname,"?"); |
4633a7c4 LW |
3846 | } |
3847 | ||
3848 | if (tmp == KEY_format) { | |
3849 | s = skipspace(s); | |
3850 | if (*s == '=') | |
3851 | lex_formbrack = lex_brackets + 1; | |
3852 | OPERATOR(FORMAT); | |
3853 | } | |
79072805 | 3854 | |
4633a7c4 LW |
3855 | /* Look for a prototype */ |
3856 | if (*s == '(') { | |
68dc0745 | 3857 | char *p; |
3858 | ||
4633a7c4 LW |
3859 | s = scan_str(s); |
3860 | if (!s) { | |
3861 | if (lex_stuff) | |
3862 | SvREFCNT_dec(lex_stuff); | |
3863 | lex_stuff = Nullsv; | |
3864 | croak("Prototype not terminated"); | |
3865 | } | |
68dc0745 | 3866 | /* strip spaces */ |
3867 | d = SvPVX(lex_stuff); | |
3868 | tmp = 0; | |
3869 | for (p = d; *p; ++p) { | |
3870 | if (!isSPACE(*p)) | |
3871 | d[tmp++] = *p; | |
3872 | } | |
3873 | d[tmp] = '\0'; | |
3874 | SvCUR(lex_stuff) = tmp; | |
3875 | ||
4633a7c4 LW |
3876 | nexttoke++; |
3877 | nextval[1] = nextval[0]; | |
3878 | nexttype[1] = nexttype[0]; | |
3879 | nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, lex_stuff); | |
3880 | nexttype[0] = THING; | |
3881 | if (nexttoke == 1) { | |
3882 | lex_defer = lex_state; | |
3883 | lex_expect = expect; | |
3884 | lex_state = LEX_KNOWNEXT; | |
3885 | } | |
3886 | lex_stuff = Nullsv; | |
3887 | } | |
79072805 | 3888 | |
4633a7c4 LW |
3889 | if (*SvPV(subname,na) == '?') { |
3890 | sv_setpv(subname,"__ANON__"); | |
3891 | TOKEN(ANONSUB); | |
3892 | } | |
3893 | PREBLOCK(SUB); | |
79072805 LW |
3894 | |
3895 | case KEY_system: | |
3896 | set_csh(); | |
a0d0e21e | 3897 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
3898 | |
3899 | case KEY_symlink: | |
a0d0e21e | 3900 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
3901 | |
3902 | case KEY_syscall: | |
a0d0e21e | 3903 | LOP(OP_SYSCALL,XTERM); |
79072805 | 3904 | |
c07a80fd | 3905 | case KEY_sysopen: |
3906 | LOP(OP_SYSOPEN,XTERM); | |
3907 | ||
137443ea | 3908 | case KEY_sysseek: |
3909 | LOP(OP_SYSSEEK,XTERM); | |
3910 | ||
79072805 | 3911 | case KEY_sysread: |
a0d0e21e | 3912 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
3913 | |
3914 | case KEY_syswrite: | |
a0d0e21e | 3915 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
3916 | |
3917 | case KEY_tr: | |
3918 | s = scan_trans(s); | |
3919 | TERM(sublex_start()); | |
3920 | ||
3921 | case KEY_tell: | |
3922 | UNI(OP_TELL); | |
3923 | ||
3924 | case KEY_telldir: | |
3925 | UNI(OP_TELLDIR); | |
3926 | ||
463ee0b2 | 3927 | case KEY_tie: |
a0d0e21e | 3928 | LOP(OP_TIE,XTERM); |
463ee0b2 | 3929 | |
c07a80fd | 3930 | case KEY_tied: |
3931 | UNI(OP_TIED); | |
3932 | ||
79072805 LW |
3933 | case KEY_time: |
3934 | FUN0(OP_TIME); | |
3935 | ||
3936 | case KEY_times: | |
3937 | FUN0(OP_TMS); | |
3938 | ||
3939 | case KEY_truncate: | |
a0d0e21e | 3940 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
3941 | |
3942 | case KEY_uc: | |
3943 | UNI(OP_UC); | |
3944 | ||
3945 | case KEY_ucfirst: | |
3946 | UNI(OP_UCFIRST); | |
3947 | ||
463ee0b2 LW |
3948 | case KEY_untie: |
3949 | UNI(OP_UNTIE); | |
3950 | ||
79072805 LW |
3951 | case KEY_until: |
3952 | yylval.ival = curcop->cop_line; | |
3953 | OPERATOR(UNTIL); | |
3954 | ||
3955 | case KEY_unless: | |
3956 | yylval.ival = curcop->cop_line; | |
3957 | OPERATOR(UNLESS); | |
3958 | ||
3959 | case KEY_unlink: | |
a0d0e21e | 3960 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
3961 | |
3962 | case KEY_undef: | |
3963 | UNI(OP_UNDEF); | |
3964 | ||
3965 | case KEY_unpack: | |
a0d0e21e | 3966 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
3967 | |
3968 | case KEY_utime: | |
a0d0e21e | 3969 | LOP(OP_UTIME,XTERM); |
79072805 LW |
3970 | |
3971 | case KEY_umask: | |
748a9306 LW |
3972 | if (dowarn) { |
3973 | for (d = s; d < bufend && (isSPACE(*d) || *d == '('); d++) ; | |
3974 | if (*d != '0' && isDIGIT(*d)) | |
3975 | yywarn("umask: argument is missing initial 0"); | |
3976 | } | |
79072805 LW |
3977 | UNI(OP_UMASK); |
3978 | ||
3979 | case KEY_unshift: | |
a0d0e21e LW |
3980 | LOP(OP_UNSHIFT,XTERM); |
3981 | ||
3982 | case KEY_use: | |
3983 | if (expect != XSTATE) | |
3984 | yyerror("\"use\" not allowed in expression"); | |
89bfa8cd | 3985 | s = skipspace(s); |
3986 | if(isDIGIT(*s)) { | |
3987 | s = force_version(s); | |
3988 | if(*s == ';' || (s = skipspace(s), *s == ';')) { | |
3989 | nextval[nexttoke].opval = Nullop; | |
3990 | force_next(WORD); | |
3991 | } | |
3992 | } | |
3993 | else { | |
3994 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
3995 | s = force_version(s); | |
3996 | } | |
a0d0e21e LW |
3997 | yylval.ival = 1; |
3998 | OPERATOR(USE); | |
79072805 LW |
3999 | |
4000 | case KEY_values: | |
4001 | UNI(OP_VALUES); | |
4002 | ||
4003 | case KEY_vec: | |
4004 | sawvec = TRUE; | |
a0d0e21e | 4005 | LOP(OP_VEC,XTERM); |
79072805 LW |
4006 | |
4007 | case KEY_while: | |
4008 | yylval.ival = curcop->cop_line; | |
4009 | OPERATOR(WHILE); | |
4010 | ||
4011 | case KEY_warn: | |
a0d0e21e LW |
4012 | hints |= HINT_BLOCK_SCOPE; |
4013 | LOP(OP_WARN,XTERM); | |
79072805 LW |
4014 | |
4015 | case KEY_wait: | |
4016 | FUN0(OP_WAIT); | |
4017 | ||
4018 | case KEY_waitpid: | |
a0d0e21e | 4019 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4020 | |
4021 | case KEY_wantarray: | |
4022 | FUN0(OP_WANTARRAY); | |
4023 | ||
4024 | case KEY_write: | |
85e6fe83 | 4025 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ |
79072805 LW |
4026 | UNI(OP_ENTERWRITE); |
4027 | ||
4028 | case KEY_x: | |
4029 | if (expect == XOPERATOR) | |
4030 | Mop(OP_REPEAT); | |
4031 | check_uni(); | |
4032 | goto just_a_word; | |
4033 | ||
a0d0e21e LW |
4034 | case KEY_xor: |
4035 | yylval.ival = OP_XOR; | |
4036 | OPERATOR(OROP); | |
4037 | ||
79072805 LW |
4038 | case KEY_y: |
4039 | s = scan_trans(s); | |
4040 | TERM(sublex_start()); | |
4041 | } | |
49dc05e3 | 4042 | }} |
79072805 LW |
4043 | } |
4044 | ||
4045 | I32 | |
8ac85365 | 4046 | keyword(register char *d, I32 len) |
79072805 LW |
4047 | { |
4048 | switch (*d) { | |
4049 | case '_': | |
4050 | if (d[1] == '_') { | |
a0d0e21e | 4051 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4052 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4053 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4054 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4055 | if (strEQ(d,"__END__")) return KEY___END__; |
4056 | } | |
4057 | break; | |
8990e307 LW |
4058 | case 'A': |
4059 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4060 | break; | |
79072805 | 4061 | case 'a': |
463ee0b2 LW |
4062 | switch (len) { |
4063 | case 3: | |
a0d0e21e LW |
4064 | if (strEQ(d,"and")) return -KEY_and; |
4065 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4066 | break; |
463ee0b2 | 4067 | case 5: |
a0d0e21e LW |
4068 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4069 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4070 | break; |
4071 | case 6: | |
a0d0e21e | 4072 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4073 | break; |
4074 | } | |
79072805 LW |
4075 | break; |
4076 | case 'B': | |
4077 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4078 | break; |
79072805 | 4079 | case 'b': |
a0d0e21e LW |
4080 | if (strEQ(d,"bless")) return -KEY_bless; |
4081 | if (strEQ(d,"bind")) return -KEY_bind; | |
4082 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4083 | break; | |
4084 | case 'C': | |
4085 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4086 | break; |
4087 | case 'c': | |
4088 | switch (len) { | |
4089 | case 3: | |
a0d0e21e LW |
4090 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4091 | if (strEQ(d,"chr")) return -KEY_chr; | |
4092 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4093 | break; |
4094 | case 4: | |
4095 | if (strEQ(d,"chop")) return KEY_chop; | |
4096 | break; | |
4097 | case 5: | |
a0d0e21e LW |
4098 | if (strEQ(d,"close")) return -KEY_close; |
4099 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4100 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4101 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4102 | if (strEQ(d,"chown")) return -KEY_chown; | |
4103 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4104 | break; |
4105 | case 6: | |
a0d0e21e LW |
4106 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4107 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4108 | break; |
4109 | case 7: | |
a0d0e21e | 4110 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4111 | break; |
4112 | case 8: | |
a0d0e21e LW |
4113 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4114 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4115 | break; |
4116 | } | |
4117 | break; | |
ed6116ce LW |
4118 | case 'D': |
4119 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4120 | break; | |
79072805 LW |
4121 | case 'd': |
4122 | switch (len) { | |
4123 | case 2: | |
4124 | if (strEQ(d,"do")) return KEY_do; | |
4125 | break; | |
4126 | case 3: | |
a0d0e21e | 4127 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4128 | break; |
4129 | case 4: | |
a0d0e21e | 4130 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4131 | break; |
4132 | case 6: | |
4133 | if (strEQ(d,"delete")) return KEY_delete; | |
4134 | break; | |
4135 | case 7: | |
4136 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4137 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4138 | break; |
4139 | case 8: | |
a0d0e21e | 4140 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4141 | break; |
4142 | } | |
4143 | break; | |
4144 | case 'E': | |
a0d0e21e | 4145 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4146 | if (strEQ(d,"END")) return KEY_END; |
4147 | break; | |
4148 | case 'e': | |
4149 | switch (len) { | |
4150 | case 2: | |
a0d0e21e | 4151 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4152 | break; |
4153 | case 3: | |
a0d0e21e LW |
4154 | if (strEQ(d,"eof")) return -KEY_eof; |
4155 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4156 | break; |
4157 | case 4: | |
4158 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4159 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4160 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4161 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4162 | if (strEQ(d,"each")) return KEY_each; |
4163 | break; | |
4164 | case 5: | |
4165 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4166 | break; | |
a0d0e21e LW |
4167 | case 6: |
4168 | if (strEQ(d,"exists")) return KEY_exists; | |
4633a7c4 | 4169 | if (strEQ(d,"elseif")) warn("elseif should be elsif"); |
a0d0e21e | 4170 | break; |
79072805 | 4171 | case 8: |
a0d0e21e LW |
4172 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4173 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4174 | break; |
4175 | case 9: | |
a0d0e21e | 4176 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4177 | break; |
4178 | case 10: | |
a0d0e21e LW |
4179 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4180 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4181 | break; |
4182 | case 11: | |
a0d0e21e | 4183 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4184 | break; |
a687059c | 4185 | } |
a687059c | 4186 | break; |
79072805 LW |
4187 | case 'f': |
4188 | switch (len) { | |
4189 | case 3: | |
4190 | if (strEQ(d,"for")) return KEY_for; | |
4191 | break; | |
4192 | case 4: | |
a0d0e21e | 4193 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
4194 | break; |
4195 | case 5: | |
a0d0e21e LW |
4196 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
4197 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
4198 | break; |
4199 | case 6: | |
4200 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 4201 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
4202 | break; |
4203 | case 7: | |
4204 | if (strEQ(d,"foreach")) return KEY_foreach; | |
4205 | break; | |
4206 | case 8: | |
a0d0e21e | 4207 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 4208 | break; |
378cc40b | 4209 | } |
a687059c | 4210 | break; |
79072805 LW |
4211 | case 'G': |
4212 | if (len == 2) { | |
a0d0e21e LW |
4213 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
4214 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 4215 | } |
a687059c | 4216 | break; |
79072805 | 4217 | case 'g': |
a687059c LW |
4218 | if (strnEQ(d,"get",3)) { |
4219 | d += 3; | |
4220 | if (*d == 'p') { | |
79072805 LW |
4221 | switch (len) { |
4222 | case 7: | |
a0d0e21e LW |
4223 | if (strEQ(d,"ppid")) return -KEY_getppid; |
4224 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
4225 | break; |
4226 | case 8: | |
a0d0e21e LW |
4227 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
4228 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
4229 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
4230 | break; |
4231 | case 11: | |
a0d0e21e LW |
4232 | if (strEQ(d,"peername")) return -KEY_getpeername; |
4233 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
4234 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
4235 | break; |
4236 | case 14: | |
a0d0e21e | 4237 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
4238 | break; |
4239 | case 16: | |
a0d0e21e | 4240 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
4241 | break; |
4242 | } | |
a687059c LW |
4243 | } |
4244 | else if (*d == 'h') { | |
a0d0e21e LW |
4245 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
4246 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
4247 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
4248 | } |
4249 | else if (*d == 'n') { | |
a0d0e21e LW |
4250 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
4251 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
4252 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
4253 | } |
4254 | else if (*d == 's') { | |
a0d0e21e LW |
4255 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
4256 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
4257 | if (strEQ(d,"servent")) return -KEY_getservent; | |
4258 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
4259 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
4260 | } |
4261 | else if (*d == 'g') { | |
a0d0e21e LW |
4262 | if (strEQ(d,"grent")) return -KEY_getgrent; |
4263 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
4264 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
4265 | } |
4266 | else if (*d == 'l') { | |
a0d0e21e | 4267 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 4268 | } |
a0d0e21e | 4269 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 4270 | break; |
a687059c | 4271 | } |
79072805 LW |
4272 | switch (len) { |
4273 | case 2: | |
a0d0e21e LW |
4274 | if (strEQ(d,"gt")) return -KEY_gt; |
4275 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
4276 | break; |
4277 | case 4: | |
4278 | if (strEQ(d,"grep")) return KEY_grep; | |
4279 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 4280 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
4281 | break; |
4282 | case 6: | |
a0d0e21e | 4283 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 4284 | break; |
378cc40b | 4285 | } |
a687059c | 4286 | break; |
79072805 | 4287 | case 'h': |
a0d0e21e | 4288 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 4289 | break; |
7d07dbc2 MB |
4290 | case 'I': |
4291 | if (strEQ(d,"INIT")) return KEY_INIT; | |
4292 | break; | |
79072805 LW |
4293 | case 'i': |
4294 | switch (len) { | |
4295 | case 2: | |
4296 | if (strEQ(d,"if")) return KEY_if; | |
4297 | break; | |
4298 | case 3: | |
a0d0e21e | 4299 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
4300 | break; |
4301 | case 5: | |
a0d0e21e LW |
4302 | if (strEQ(d,"index")) return -KEY_index; |
4303 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
4304 | break; |
4305 | } | |
a687059c | 4306 | break; |
79072805 | 4307 | case 'j': |
a0d0e21e | 4308 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 4309 | break; |
79072805 LW |
4310 | case 'k': |
4311 | if (len == 4) { | |
4312 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 4313 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 4314 | } |
79072805 LW |
4315 | break; |
4316 | case 'L': | |
4317 | if (len == 2) { | |
a0d0e21e LW |
4318 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
4319 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 4320 | } |
79072805 LW |
4321 | break; |
4322 | case 'l': | |
4323 | switch (len) { | |
4324 | case 2: | |
a0d0e21e LW |
4325 | if (strEQ(d,"lt")) return -KEY_lt; |
4326 | if (strEQ(d,"le")) return -KEY_le; | |
4327 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
4328 | break; |
4329 | case 3: | |
a0d0e21e | 4330 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
4331 | break; |
4332 | case 4: | |
4333 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 4334 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 4335 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 4336 | break; |
79072805 LW |
4337 | case 5: |
4338 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 4339 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
4340 | break; |
4341 | case 6: | |
a0d0e21e LW |
4342 | if (strEQ(d,"length")) return -KEY_length; |
4343 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
4344 | break; |
4345 | case 7: | |
a0d0e21e | 4346 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
4347 | break; |
4348 | case 9: | |
a0d0e21e | 4349 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
4350 | break; |
4351 | } | |
a687059c | 4352 | break; |
79072805 LW |
4353 | case 'm': |
4354 | switch (len) { | |
4355 | case 1: return KEY_m; | |
93a17b20 LW |
4356 | case 2: |
4357 | if (strEQ(d,"my")) return KEY_my; | |
4358 | break; | |
a0d0e21e LW |
4359 | case 3: |
4360 | if (strEQ(d,"map")) return KEY_map; | |
4361 | break; | |
79072805 | 4362 | case 5: |
a0d0e21e | 4363 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
4364 | break; |
4365 | case 6: | |
a0d0e21e LW |
4366 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
4367 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
4368 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
4369 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
4370 | break; |
4371 | } | |
a687059c | 4372 | break; |
79072805 | 4373 | case 'N': |
a0d0e21e | 4374 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 4375 | break; |
79072805 LW |
4376 | case 'n': |
4377 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
4378 | if (strEQ(d,"ne")) return -KEY_ne; |
4379 | if (strEQ(d,"not")) return -KEY_not; | |
4380 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 4381 | break; |
79072805 LW |
4382 | case 'o': |
4383 | switch (len) { | |
463ee0b2 | 4384 | case 2: |
a0d0e21e | 4385 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 4386 | break; |
79072805 | 4387 | case 3: |
a0d0e21e LW |
4388 | if (strEQ(d,"ord")) return -KEY_ord; |
4389 | if (strEQ(d,"oct")) return -KEY_oct; | |
79072805 LW |
4390 | break; |
4391 | case 4: | |
a0d0e21e | 4392 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
4393 | break; |
4394 | case 7: | |
a0d0e21e | 4395 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 4396 | break; |
fe14fcc3 | 4397 | } |
a687059c | 4398 | break; |
79072805 LW |
4399 | case 'p': |
4400 | switch (len) { | |
4401 | case 3: | |
4402 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 4403 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
4404 | break; |
4405 | case 4: | |
4406 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
4407 | if (strEQ(d,"pack")) return -KEY_pack; |
4408 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
4409 | break; |
4410 | case 5: | |
4411 | if (strEQ(d,"print")) return KEY_print; | |
4412 | break; | |
4413 | case 6: | |
4414 | if (strEQ(d,"printf")) return KEY_printf; | |
4415 | break; | |
4416 | case 7: | |
4417 | if (strEQ(d,"package")) return KEY_package; | |
4418 | break; | |
c07a80fd | 4419 | case 9: |
4420 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 4421 | } |
79072805 LW |
4422 | break; |
4423 | case 'q': | |
4424 | if (len <= 2) { | |
4425 | if (strEQ(d,"q")) return KEY_q; | |
4426 | if (strEQ(d,"qq")) return KEY_qq; | |
8990e307 | 4427 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 4428 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 4429 | } |
a0d0e21e | 4430 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
4431 | break; |
4432 | case 'r': | |
4433 | switch (len) { | |
4434 | case 3: | |
a0d0e21e | 4435 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
4436 | break; |
4437 | case 4: | |
a0d0e21e LW |
4438 | if (strEQ(d,"read")) return -KEY_read; |
4439 | if (strEQ(d,"rand")) return -KEY_rand; | |
4440 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
4441 | if (strEQ(d,"redo")) return KEY_redo; |
4442 | break; | |
4443 | case 5: | |
a0d0e21e LW |
4444 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
4445 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
4446 | break; |
4447 | case 6: | |
4448 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
4449 | if (strEQ(d,"rename")) return -KEY_rename; |
4450 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
4451 | break; |
4452 | case 7: | |
a0d0e21e LW |
4453 | if (strEQ(d,"require")) return -KEY_require; |
4454 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
4455 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
4456 | break; |
4457 | case 8: | |
a0d0e21e LW |
4458 | if (strEQ(d,"readlink")) return -KEY_readlink; |
4459 | if (strEQ(d,"readline")) return -KEY_readline; | |
4460 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
4461 | break; |
4462 | case 9: | |
a0d0e21e | 4463 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 4464 | break; |
a687059c | 4465 | } |
79072805 LW |
4466 | break; |
4467 | case 's': | |
a687059c | 4468 | switch (d[1]) { |
79072805 | 4469 | case 0: return KEY_s; |
a687059c | 4470 | case 'c': |
79072805 | 4471 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
4472 | break; |
4473 | case 'e': | |
79072805 LW |
4474 | switch (len) { |
4475 | case 4: | |
a0d0e21e LW |
4476 | if (strEQ(d,"seek")) return -KEY_seek; |
4477 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
4478 | break; |
4479 | case 5: | |
a0d0e21e | 4480 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
4481 | break; |
4482 | case 6: | |
a0d0e21e LW |
4483 | if (strEQ(d,"select")) return -KEY_select; |
4484 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
4485 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
4486 | break; |
4487 | case 7: | |
a0d0e21e LW |
4488 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
4489 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
4490 | break; |
4491 | case 8: | |
a0d0e21e LW |
4492 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
4493 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
4494 | break; |
4495 | case 9: | |
a0d0e21e | 4496 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
4497 | break; |
4498 | case 10: | |
a0d0e21e LW |
4499 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
4500 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
4501 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
4502 | break; |
4503 | case 11: | |
a0d0e21e LW |
4504 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
4505 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
4506 | break; |
4507 | } | |
a687059c LW |
4508 | break; |
4509 | case 'h': | |
79072805 LW |
4510 | switch (len) { |
4511 | case 5: | |
4512 | if (strEQ(d,"shift")) return KEY_shift; | |
4513 | break; | |
4514 | case 6: | |
a0d0e21e LW |
4515 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
4516 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
4517 | break; |
4518 | case 7: | |
a0d0e21e | 4519 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
4520 | break; |
4521 | case 8: | |
a0d0e21e LW |
4522 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
4523 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
4524 | break; |
4525 | } | |
a687059c LW |
4526 | break; |
4527 | case 'i': | |
a0d0e21e | 4528 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
4529 | break; |
4530 | case 'l': | |
a0d0e21e | 4531 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
4532 | break; |
4533 | case 'o': | |
79072805 | 4534 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
4535 | if (strEQ(d,"socket")) return -KEY_socket; |
4536 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
4537 | break; |
4538 | case 'p': | |
79072805 | 4539 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 4540 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 4541 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
4542 | break; |
4543 | case 'q': | |
a0d0e21e | 4544 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
4545 | break; |
4546 | case 'r': | |
a0d0e21e | 4547 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
4548 | break; |
4549 | case 't': | |
a0d0e21e | 4550 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 4551 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
4552 | break; |
4553 | case 'u': | |
a0d0e21e | 4554 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 4555 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
4556 | break; |
4557 | case 'y': | |
79072805 LW |
4558 | switch (len) { |
4559 | case 6: | |
a0d0e21e | 4560 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
4561 | break; |
4562 | case 7: | |
a0d0e21e LW |
4563 | if (strEQ(d,"symlink")) return -KEY_symlink; |
4564 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 4565 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
4566 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
4567 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
4568 | break; |
4569 | case 8: | |
a0d0e21e | 4570 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 4571 | break; |
a687059c | 4572 | } |
a687059c LW |
4573 | break; |
4574 | } | |
4575 | break; | |
79072805 LW |
4576 | case 't': |
4577 | switch (len) { | |
4578 | case 2: | |
4579 | if (strEQ(d,"tr")) return KEY_tr; | |
4580 | break; | |
463ee0b2 LW |
4581 | case 3: |
4582 | if (strEQ(d,"tie")) return KEY_tie; | |
4583 | break; | |
79072805 | 4584 | case 4: |
a0d0e21e | 4585 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 4586 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 4587 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
4588 | break; |
4589 | case 5: | |
a0d0e21e | 4590 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
4591 | break; |
4592 | case 7: | |
a0d0e21e | 4593 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
4594 | break; |
4595 | case 8: | |
a0d0e21e | 4596 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 4597 | break; |
378cc40b | 4598 | } |
a687059c | 4599 | break; |
79072805 LW |
4600 | case 'u': |
4601 | switch (len) { | |
4602 | case 2: | |
a0d0e21e LW |
4603 | if (strEQ(d,"uc")) return -KEY_uc; |
4604 | break; | |
4605 | case 3: | |
4606 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
4607 | break; |
4608 | case 5: | |
4609 | if (strEQ(d,"undef")) return KEY_undef; | |
4610 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 4611 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
4612 | if (strEQ(d,"utime")) return -KEY_utime; |
4613 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
4614 | break; |
4615 | case 6: | |
4616 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
4617 | if (strEQ(d,"unpack")) return -KEY_unpack; |
4618 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
4619 | break; |
4620 | case 7: | |
4621 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 4622 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 4623 | break; |
a687059c LW |
4624 | } |
4625 | break; | |
79072805 | 4626 | case 'v': |
a0d0e21e LW |
4627 | if (strEQ(d,"values")) return -KEY_values; |
4628 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 4629 | break; |
79072805 LW |
4630 | case 'w': |
4631 | switch (len) { | |
4632 | case 4: | |
a0d0e21e LW |
4633 | if (strEQ(d,"warn")) return -KEY_warn; |
4634 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
4635 | break; |
4636 | case 5: | |
4637 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 4638 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
4639 | break; |
4640 | case 7: | |
a0d0e21e | 4641 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
4642 | break; |
4643 | case 9: | |
a0d0e21e | 4644 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 4645 | break; |
2f3197b3 | 4646 | } |
a687059c | 4647 | break; |
79072805 | 4648 | case 'x': |
a0d0e21e LW |
4649 | if (len == 1) return -KEY_x; |
4650 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 4651 | break; |
79072805 LW |
4652 | case 'y': |
4653 | if (len == 1) return KEY_y; | |
4654 | break; | |
4655 | case 'z': | |
a687059c LW |
4656 | break; |
4657 | } | |
79072805 | 4658 | return 0; |
a687059c LW |
4659 | } |
4660 | ||
8990e307 | 4661 | static void |
8ac85365 | 4662 | checkcomma(register char *s, char *name, char *what) |
a687059c | 4663 | { |
2f3197b3 LW |
4664 | char *w; |
4665 | ||
463ee0b2 | 4666 | if (dowarn && *s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
a0d0e21e LW |
4667 | int level = 1; |
4668 | for (w = s+2; *w && level; w++) { | |
4669 | if (*w == '(') | |
4670 | ++level; | |
4671 | else if (*w == ')') | |
4672 | --level; | |
4673 | } | |
4674 | if (*w) | |
4675 | for (; *w && isSPACE(*w); w++) ; | |
d1f3fb15 | 4676 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ |
2f3197b3 LW |
4677 | warn("%s (...) interpreted as function",name); |
4678 | } | |
4679 | while (s < bufend && isSPACE(*s)) | |
4680 | s++; | |
a687059c LW |
4681 | if (*s == '(') |
4682 | s++; | |
de3bb511 | 4683 | while (s < bufend && isSPACE(*s)) |
a687059c | 4684 | s++; |
79072805 | 4685 | if (isIDFIRST(*s)) { |
2f3197b3 | 4686 | w = s++; |
de3bb511 | 4687 | while (isALNUM(*s)) |
a687059c | 4688 | s++; |
de3bb511 | 4689 | while (s < bufend && isSPACE(*s)) |
a687059c | 4690 | s++; |
e929a76b | 4691 | if (*s == ',') { |
463ee0b2 | 4692 | int kw; |
e929a76b | 4693 | *s = '\0'; |
4633a7c4 | 4694 | kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0; |
e929a76b | 4695 | *s = ','; |
463ee0b2 | 4696 | if (kw) |
e929a76b | 4697 | return; |
463ee0b2 LW |
4698 | croak("No comma allowed after %s", what); |
4699 | } | |
4700 | } | |
4701 | } | |
4702 | ||
8990e307 | 4703 | static char * |
8ac85365 | 4704 | scan_word(register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
4705 | { |
4706 | register char *d = dest; | |
8903cb82 | 4707 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 4708 | for (;;) { |
8903cb82 | 4709 | if (d >= e) |
fc36a67e | 4710 | croak(ident_too_long); |
463ee0b2 LW |
4711 | if (isALNUM(*s)) |
4712 | *d++ = *s++; | |
4713 | else if (*s == '\'' && allow_package && isIDFIRST(s[1])) { | |
4714 | *d++ = ':'; | |
4715 | *d++ = ':'; | |
4716 | s++; | |
4717 | } | |
c3e0f903 | 4718 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
4719 | *d++ = *s++; |
4720 | *d++ = *s++; | |
4721 | } | |
4722 | else { | |
4723 | *d = '\0'; | |
4724 | *slp = d - dest; | |
4725 | return s; | |
e929a76b | 4726 | } |
378cc40b LW |
4727 | } |
4728 | } | |
4729 | ||
8990e307 | 4730 | static char * |
8ac85365 | 4731 | scan_ident(register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
4732 | { |
4733 | register char *d; | |
8903cb82 | 4734 | register char *e; |
79072805 | 4735 | char *bracket = 0; |
748a9306 | 4736 | char funny = *s++; |
378cc40b | 4737 | |
79072805 LW |
4738 | if (lex_brackets == 0) |
4739 | lex_fakebrack = 0; | |
a0d0e21e LW |
4740 | if (isSPACE(*s)) |
4741 | s = skipspace(s); | |
378cc40b | 4742 | d = dest; |
8903cb82 | 4743 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 4744 | if (isDIGIT(*s)) { |
8903cb82 | 4745 | while (isDIGIT(*s)) { |
4746 | if (d >= e) | |
fc36a67e | 4747 | croak(ident_too_long); |
378cc40b | 4748 | *d++ = *s++; |
8903cb82 | 4749 | } |
378cc40b LW |
4750 | } |
4751 | else { | |
463ee0b2 | 4752 | for (;;) { |
8903cb82 | 4753 | if (d >= e) |
fc36a67e | 4754 | croak(ident_too_long); |
463ee0b2 LW |
4755 | if (isALNUM(*s)) |
4756 | *d++ = *s++; | |
4757 | else if (*s == '\'' && isIDFIRST(s[1])) { | |
4758 | *d++ = ':'; | |
4759 | *d++ = ':'; | |
4760 | s++; | |
4761 | } | |
a0d0e21e | 4762 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
4763 | *d++ = *s++; |
4764 | *d++ = *s++; | |
4765 | } | |
4766 | else | |
4767 | break; | |
4768 | } | |
378cc40b LW |
4769 | } |
4770 | *d = '\0'; | |
4771 | d = dest; | |
79072805 LW |
4772 | if (*d) { |
4773 | if (lex_state != LEX_NORMAL) | |
4774 | lex_state = LEX_INTERPENDMAYBE; | |
4775 | return s; | |
378cc40b | 4776 | } |
748a9306 | 4777 | if (*s == '$' && s[1] && |
ff0cee69 | 4778 | (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 4779 | { |
4780 | if (isDIGIT(s[1]) && lex_state == LEX_INTERPNORMAL) | |
4781 | deprecate("\"$$<digit>\" to mean \"${$}<digit>\""); | |
4782 | else | |
4783 | return s; | |
4784 | } | |
79072805 LW |
4785 | if (*s == '{') { |
4786 | bracket = s; | |
4787 | s++; | |
4788 | } | |
4789 | else if (ck_uni) | |
4790 | check_uni(); | |
93a17b20 | 4791 | if (s < send) |
79072805 LW |
4792 | *d = *s++; |
4793 | d[1] = '\0'; | |
748a9306 | 4794 | if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) { |
bbce6d69 | 4795 | *d = toCTRL(*s); |
4796 | s++; | |
de3bb511 | 4797 | } |
79072805 | 4798 | if (bracket) { |
748a9306 | 4799 | if (isSPACE(s[-1])) { |
fa83b5b6 | 4800 | while (s < send) { |
4801 | char ch = *s++; | |
4802 | if (ch != ' ' && ch != '\t') { | |
4803 | *d = ch; | |
4804 | break; | |
4805 | } | |
4806 | } | |
748a9306 | 4807 | } |
ff68c719 | 4808 | if (isIDFIRST(*d)) { |
79072805 | 4809 | d++; |
748a9306 | 4810 | while (isALNUM(*s) || *s == ':') |
79072805 LW |
4811 | *d++ = *s++; |
4812 | *d = '\0'; | |
748a9306 | 4813 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 4814 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
748a9306 LW |
4815 | if (dowarn && keyword(dest, d - dest)) { |
4816 | char *brack = *s == '[' ? "[...]" : "{...}"; | |
4817 | warn("Ambiguous use of %c{%s%s} resolved to %c%s%s", | |
4818 | funny, dest, brack, funny, dest, brack); | |
4819 | } | |
4820 | lex_fakebrack = lex_brackets+1; | |
79072805 | 4821 | bracket++; |
a0d0e21e | 4822 | lex_brackstack[lex_brackets++] = XOPERATOR; |
79072805 LW |
4823 | return s; |
4824 | } | |
4825 | } | |
4826 | if (*s == '}') { | |
4827 | s++; | |
4828 | if (lex_state == LEX_INTERPNORMAL && !lex_brackets) | |
4829 | lex_state = LEX_INTERPEND; | |
748a9306 LW |
4830 | if (funny == '#') |
4831 | funny = '@'; | |
84902520 | 4832 | if (dowarn && lex_state == LEX_NORMAL && |
748a9306 LW |
4833 | (keyword(dest, d - dest) || perl_get_cv(dest, FALSE))) |
4834 | warn("Ambiguous use of %c{%s} resolved to %c%s", | |
4835 | funny, dest, funny, dest); | |
79072805 LW |
4836 | } |
4837 | else { | |
4838 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 4839 | *dest = '\0'; |
79072805 LW |
4840 | } |
4841 | } | |
4842 | else if (lex_state == LEX_INTERPNORMAL && !lex_brackets && !intuit_more(s)) | |
4843 | lex_state = LEX_INTERPEND; | |
378cc40b LW |
4844 | return s; |
4845 | } | |
4846 | ||
8ac85365 | 4847 | void pmflag(U16 *pmfl, int ch) |
a0d0e21e | 4848 | { |
bbce6d69 | 4849 | if (ch == 'i') |
a0d0e21e | 4850 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
4851 | else if (ch == 'g') |
4852 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 4853 | else if (ch == 'c') |
4854 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
4855 | else if (ch == 'o') |
4856 | *pmfl |= PMf_KEEP; | |
4857 | else if (ch == 'm') | |
4858 | *pmfl |= PMf_MULTILINE; | |
4859 | else if (ch == 's') | |
4860 | *pmfl |= PMf_SINGLELINE; | |
4861 | else if (ch == 'x') | |
4862 | *pmfl |= PMf_EXTENDED; | |
4863 | } | |
378cc40b | 4864 | |
8990e307 | 4865 | static char * |
8ac85365 | 4866 | scan_pat(char *start) |
378cc40b | 4867 | { |
79072805 LW |
4868 | PMOP *pm; |
4869 | char *s; | |
378cc40b | 4870 | |
79072805 LW |
4871 | s = scan_str(start); |
4872 | if (!s) { | |
4873 | if (lex_stuff) | |
8990e307 | 4874 | SvREFCNT_dec(lex_stuff); |
79072805 | 4875 | lex_stuff = Nullsv; |
463ee0b2 | 4876 | croak("Search pattern not terminated"); |
378cc40b | 4877 | } |
bbce6d69 | 4878 | |
79072805 | 4879 | pm = (PMOP*)newPMOP(OP_MATCH, 0); |
a0d0e21e | 4880 | if (multi_open == '?') |
79072805 | 4881 | pm->op_pmflags |= PMf_ONCE; |
c90c0ff4 | 4882 | while (*s && strchr("iogcmsx", *s)) |
a0d0e21e | 4883 | pmflag(&pm->op_pmflags,*s++); |
4633a7c4 | 4884 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 4885 | |
79072805 LW |
4886 | lex_op = (OP*)pm; |
4887 | yylval.ival = OP_MATCH; | |
378cc40b LW |
4888 | return s; |
4889 | } | |
4890 | ||
8990e307 | 4891 | static char * |
8ac85365 | 4892 | scan_subst(char *start) |
79072805 | 4893 | { |
a0d0e21e | 4894 | register char *s; |
79072805 | 4895 | register PMOP *pm; |
4fdae800 | 4896 | I32 first_start; |
79072805 LW |
4897 | I32 es = 0; |
4898 | ||
79072805 LW |
4899 | yylval.ival = OP_NULL; |
4900 | ||
a0d0e21e | 4901 | s = scan_str(start); |
79072805 LW |
4902 | |
4903 | if (!s) { | |
4904 | if (lex_stuff) | |
8990e307 | 4905 | SvREFCNT_dec(lex_stuff); |
79072805 | 4906 | lex_stuff = Nullsv; |
463ee0b2 | 4907 | croak("Substitution pattern not terminated"); |
a687059c | 4908 | } |
79072805 | 4909 | |
a0d0e21e | 4910 | if (s[-1] == multi_open) |
79072805 LW |
4911 | s--; |
4912 | ||
4fdae800 | 4913 | first_start = multi_start; |
79072805 LW |
4914 | s = scan_str(s); |
4915 | if (!s) { | |
4916 | if (lex_stuff) | |
8990e307 | 4917 | SvREFCNT_dec(lex_stuff); |
79072805 LW |
4918 | lex_stuff = Nullsv; |
4919 | if (lex_repl) | |
8990e307 | 4920 | SvREFCNT_dec(lex_repl); |
79072805 | 4921 | lex_repl = Nullsv; |
463ee0b2 | 4922 | croak("Substitution replacement not terminated"); |
a687059c | 4923 | } |
4fdae800 | 4924 | multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 4925 | |
79072805 | 4926 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
c90c0ff4 | 4927 | while (*s && strchr("iogcmsex", *s)) { |
a687059c LW |
4928 | if (*s == 'e') { |
4929 | s++; | |
2f3197b3 | 4930 | es++; |
a687059c | 4931 | } |
a0d0e21e LW |
4932 | else |
4933 | pmflag(&pm->op_pmflags,*s++); | |
378cc40b | 4934 | } |
79072805 LW |
4935 | |
4936 | if (es) { | |
4937 | SV *repl; | |
4938 | pm->op_pmflags |= PMf_EVAL; | |
463ee0b2 LW |
4939 | repl = newSVpv("",0); |
4940 | while (es-- > 0) | |
a0d0e21e | 4941 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 LW |
4942 | sv_catpvn(repl, "{ ", 2); |
4943 | sv_catsv(repl, lex_repl); | |
4944 | sv_catpvn(repl, " };", 2); | |
4945 | SvCOMPILED_on(repl); | |
8990e307 | 4946 | SvREFCNT_dec(lex_repl); |
79072805 | 4947 | lex_repl = repl; |
378cc40b | 4948 | } |
79072805 | 4949 | |
4633a7c4 | 4950 | pm->op_pmpermflags = pm->op_pmflags; |
79072805 LW |
4951 | lex_op = (OP*)pm; |
4952 | yylval.ival = OP_SUBST; | |
378cc40b LW |
4953 | return s; |
4954 | } | |
4955 | ||
8990e307 | 4956 | static char * |
8ac85365 | 4957 | scan_trans(char *start) |
378cc40b | 4958 | { |
a0d0e21e | 4959 | register char* s; |
11343788 | 4960 | OP *o; |
79072805 LW |
4961 | short *tbl; |
4962 | I32 squash; | |
8ac85365 | 4963 | I32 Delete; |
79072805 LW |
4964 | I32 complement; |
4965 | ||
4966 | yylval.ival = OP_NULL; | |
4967 | ||
a0d0e21e | 4968 | s = scan_str(start); |
79072805 LW |
4969 | if (!s) { |
4970 | if (lex_stuff) | |
8990e307 | 4971 | SvREFCNT_dec(lex_stuff); |
79072805 | 4972 | lex_stuff = Nullsv; |
2c268ad5 | 4973 | croak("Transliteration pattern not terminated"); |
a687059c | 4974 | } |
a0d0e21e | 4975 | if (s[-1] == multi_open) |
2f3197b3 LW |
4976 | s--; |
4977 | ||
93a17b20 | 4978 | s = scan_str(s); |
79072805 LW |
4979 | if (!s) { |
4980 | if (lex_stuff) | |
8990e307 | 4981 | SvREFCNT_dec(lex_stuff); |
79072805 LW |
4982 | lex_stuff = Nullsv; |
4983 | if (lex_repl) | |
8990e307 | 4984 | SvREFCNT_dec(lex_repl); |
79072805 | 4985 | lex_repl = Nullsv; |
2c268ad5 | 4986 | croak("Transliteration replacement not terminated"); |
a687059c | 4987 | } |
79072805 LW |
4988 | |
4989 | New(803,tbl,256,short); | |
11343788 | 4990 | o = newPVOP(OP_TRANS, 0, (char*)tbl); |
2f3197b3 | 4991 | |
8ac85365 | 4992 | complement = Delete = squash = 0; |
395c3793 LW |
4993 | while (*s == 'c' || *s == 'd' || *s == 's') { |
4994 | if (*s == 'c') | |
79072805 | 4995 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 4996 | else if (*s == 'd') |
8ac85365 | 4997 | Delete = OPpTRANS_DELETE; |
395c3793 | 4998 | else |
79072805 | 4999 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
5000 | s++; |
5001 | } | |
8ac85365 | 5002 | o->op_private = Delete|squash|complement; |
79072805 | 5003 | |
11343788 | 5004 | lex_op = o; |
79072805 LW |
5005 | yylval.ival = OP_TRANS; |
5006 | return s; | |
5007 | } | |
5008 | ||
8990e307 | 5009 | static char * |
8ac85365 | 5010 | scan_heredoc(register char *s) |
79072805 | 5011 | { |
11343788 | 5012 | dTHR; |
79072805 LW |
5013 | SV *herewas; |
5014 | I32 op_type = OP_SCALAR; | |
5015 | I32 len; | |
5016 | SV *tmpstr; | |
5017 | char term; | |
5018 | register char *d; | |
fc36a67e | 5019 | register char *e; |
4633a7c4 | 5020 | char *peek; |
a2c06652 | 5021 | int outer = (rsfp && !(lex_inwhat == OP_SCALAR)); |
79072805 LW |
5022 | |
5023 | s += 2; | |
5024 | d = tokenbuf; | |
fc36a67e | 5025 | e = tokenbuf + sizeof tokenbuf - 1; |
fd2d0953 | 5026 | if (!outer) |
79072805 | 5027 | *d++ = '\n'; |
4633a7c4 LW |
5028 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
5029 | if (*peek && strchr("`'\"",*peek)) { | |
5030 | s = peek; | |
79072805 | 5031 | term = *s++; |
fc36a67e | 5032 | s = delimcpy(d, e, s, bufend, term, &len); |
5033 | d += len; | |
79072805 LW |
5034 | if (s < bufend) |
5035 | s++; | |
79072805 LW |
5036 | } |
5037 | else { | |
5038 | if (*s == '\\') | |
5039 | s++, term = '\''; | |
5040 | else | |
5041 | term = '"'; | |
4633a7c4 LW |
5042 | if (!isALNUM(*s)) |
5043 | deprecate("bare << to mean <<\"\""); | |
fc36a67e | 5044 | for (; isALNUM(*s); s++) { |
5045 | if (d < e) | |
5046 | *d++ = *s; | |
5047 | } | |
5048 | } | |
5049 | if (d >= tokenbuf + sizeof tokenbuf - 1) | |
5050 | croak("Delimiter for here document is too long"); | |
79072805 LW |
5051 | *d++ = '\n'; |
5052 | *d = '\0'; | |
5053 | len = d - tokenbuf; | |
5054 | d = "\n"; | |
fd2d0953 | 5055 | if (outer || !(d=ninstr(s,bufend,d,d+1))) |
79072805 LW |
5056 | herewas = newSVpv(s,bufend-s); |
5057 | else | |
5058 | s--, herewas = newSVpv(s,d-s); | |
5059 | s += SvCUR(herewas); | |
748a9306 LW |
5060 | |
5061 | tmpstr = NEWSV(87,80); | |
5062 | sv_upgrade(tmpstr, SVt_PVIV); | |
5063 | if (term == '\'') { | |
79072805 | 5064 | op_type = OP_CONST; |
748a9306 LW |
5065 | SvIVX(tmpstr) = -1; |
5066 | } | |
5067 | else if (term == '`') { | |
79072805 | 5068 | op_type = OP_BACKTICK; |
748a9306 LW |
5069 | SvIVX(tmpstr) = '\\'; |
5070 | } | |
79072805 LW |
5071 | |
5072 | CLINE; | |
5073 | multi_start = curcop->cop_line; | |
5074 | multi_open = multi_close = '<'; | |
79072805 | 5075 | term = *tokenbuf; |
fd2d0953 | 5076 | if (!outer) { |
79072805 LW |
5077 | d = s; |
5078 | while (s < bufend && | |
36477c24 | 5079 | (*s != term || memNE(s,tokenbuf,len)) ) { |
79072805 LW |
5080 | if (*s++ == '\n') |
5081 | curcop->cop_line++; | |
5082 | } | |
5083 | if (s >= bufend) { | |
5084 | curcop->cop_line = multi_start; | |
8990e307 | 5085 | missingterm(tokenbuf); |
79072805 LW |
5086 | } |
5087 | sv_setpvn(tmpstr,d+1,s-d); | |
5088 | s += len - 1; | |
49d8d3a1 MB |
5089 | curcop->cop_line++; /* the preceding stmt passes a newline */ |
5090 | ||
79072805 LW |
5091 | sv_catpvn(herewas,s,bufend-s); |
5092 | sv_setsv(linestr,herewas); | |
fd049845 | 5093 | oldoldbufptr = oldbufptr = bufptr = s = linestart = SvPVX(linestr); |
463ee0b2 | 5094 | bufend = SvPVX(linestr) + SvCUR(linestr); |
79072805 LW |
5095 | } |
5096 | else | |
5097 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
5098 | while (s >= bufend) { /* multiple line string? */ | |
fd2d0953 | 5099 | if (!outer || |
fd049845 | 5100 | !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) { |
79072805 | 5101 | curcop->cop_line = multi_start; |
8990e307 | 5102 | missingterm(tokenbuf); |
79072805 LW |
5103 | } |
5104 | curcop->cop_line++; | |
84902520 | 5105 | if (PERLDB_LINE && curstash != debstash) { |
79072805 LW |
5106 | SV *sv = NEWSV(88,0); |
5107 | ||
93a17b20 | 5108 | sv_upgrade(sv, SVt_PVMG); |
79072805 LW |
5109 | sv_setsv(sv,linestr); |
5110 | av_store(GvAV(curcop->cop_filegv), | |
5111 | (I32)curcop->cop_line,sv); | |
5112 | } | |
463ee0b2 | 5113 | bufend = SvPVX(linestr) + SvCUR(linestr); |
36477c24 | 5114 | if (*s == term && memEQ(s,tokenbuf,len)) { |
79072805 LW |
5115 | s = bufend - 1; |
5116 | *s = ' '; | |
5117 | sv_catsv(linestr,herewas); | |
463ee0b2 | 5118 | bufend = SvPVX(linestr) + SvCUR(linestr); |
79072805 LW |
5119 | } |
5120 | else { | |
5121 | s = bufend; | |
5122 | sv_catsv(tmpstr,linestr); | |
395c3793 LW |
5123 | } |
5124 | } | |
79072805 LW |
5125 | multi_end = curcop->cop_line; |
5126 | s++; | |
5127 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { | |
5128 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 5129 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 5130 | } |
8990e307 | 5131 | SvREFCNT_dec(herewas); |
79072805 LW |
5132 | lex_stuff = tmpstr; |
5133 | yylval.ival = op_type; | |
5134 | return s; | |
5135 | } | |
5136 | ||
02aa26ce NT |
5137 | /* scan_inputsymbol |
5138 | takes: current position in input buffer | |
5139 | returns: new position in input buffer | |
5140 | side-effects: yylval and lex_op are set. | |
5141 | ||
5142 | This code handles: | |
5143 | ||
5144 | <> read from ARGV | |
5145 | <FH> read from filehandle | |
5146 | <pkg::FH> read from package qualified filehandle | |
5147 | <pkg'FH> read from package qualified filehandle | |
5148 | <$fh> read from filehandle in $fh | |
5149 | <*.h> filename glob | |
5150 | ||
5151 | */ | |
5152 | ||
8990e307 | 5153 | static char * |
8ac85365 | 5154 | scan_inputsymbol(char *start) |
79072805 | 5155 | { |
02aa26ce | 5156 | register char *s = start; /* current position in buffer */ |
79072805 | 5157 | register char *d; |
fc36a67e | 5158 | register char *e; |
79072805 LW |
5159 | I32 len; |
5160 | ||
02aa26ce NT |
5161 | d = tokenbuf; /* start of temp holding space */ |
5162 | e = tokenbuf + sizeof tokenbuf; /* end of temp holding space */ | |
5163 | s = delimcpy(d, e, s + 1, bufend, '>', &len); /* extract until > */ | |
5164 | ||
5165 | /* die if we didn't have space for the contents of the <>, | |
5166 | or if it didn't end | |
5167 | */ | |
5168 | ||
fc36a67e | 5169 | if (len >= sizeof tokenbuf) |
5170 | croak("Excessively long <> operator"); | |
5171 | if (s >= bufend) | |
463ee0b2 | 5172 | croak("Unterminated <> operator"); |
02aa26ce | 5173 | |
fc36a67e | 5174 | s++; |
02aa26ce NT |
5175 | |
5176 | /* check for <$fh> | |
5177 | Remember, only scalar variables are interpreted as filehandles by | |
5178 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
5179 | treated as a glob() call. | |
5180 | This code makes use of the fact that except for the $ at the front, | |
5181 | a scalar variable and a filehandle look the same. | |
5182 | */ | |
4633a7c4 | 5183 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
5184 | |
5185 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
a0d0e21e | 5186 | while (*d && (isALNUM(*d) || *d == '\'' || *d == ':')) |
79072805 | 5187 | d++; |
02aa26ce NT |
5188 | |
5189 | /* If we've tried to read what we allow filehandles to look like, and | |
5190 | there's still text left, then it must be a glob() and not a getline. | |
5191 | Use scan_str to pull out the stuff between the <> and treat it | |
5192 | as nothing more than a string. | |
5193 | */ | |
5194 | ||
79072805 LW |
5195 | if (d - tokenbuf != len) { |
5196 | yylval.ival = OP_GLOB; | |
5197 | set_csh(); | |
5198 | s = scan_str(start); | |
5199 | if (!s) | |
02aa26ce | 5200 | croak("Glob not terminated"); |
79072805 LW |
5201 | return s; |
5202 | } | |
395c3793 | 5203 | else { |
02aa26ce | 5204 | /* we're in a filehandle read situation */ |
79072805 | 5205 | d = tokenbuf; |
02aa26ce NT |
5206 | |
5207 | /* turn <> into <ARGV> */ | |
79072805 LW |
5208 | if (!len) |
5209 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
5210 | |
5211 | /* if <$fh>, create the ops to turn the variable into a | |
5212 | filehandle | |
5213 | */ | |
79072805 | 5214 | if (*d == '$') { |
a0d0e21e | 5215 | I32 tmp; |
02aa26ce NT |
5216 | |
5217 | /* try to find it in the pad for this block, otherwise find | |
5218 | add symbol table ops | |
5219 | */ | |
11343788 MB |
5220 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
5221 | OP *o = newOP(OP_PADSV, 0); | |
5222 | o->op_targ = tmp; | |
5223 | lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o)); | |
a0d0e21e LW |
5224 | } |
5225 | else { | |
5226 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
5227 | lex_op = (OP*)newUNOP(OP_READLINE, 0, | |
5228 | newUNOP(OP_RV2GV, 0, | |
5229 | newUNOP(OP_RV2SV, 0, | |
5230 | newGVOP(OP_GV, 0, gv)))); | |
5231 | } | |
02aa26ce | 5232 | /* we created the ops in lex_op, so make yylval.ival a null op */ |
79072805 LW |
5233 | yylval.ival = OP_NULL; |
5234 | } | |
02aa26ce NT |
5235 | |
5236 | /* If it's none of the above, it must be a literal filehandle | |
5237 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 5238 | else { |
85e6fe83 | 5239 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
79072805 LW |
5240 | lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
5241 | yylval.ival = OP_NULL; | |
5242 | } | |
5243 | } | |
02aa26ce | 5244 | |
79072805 LW |
5245 | return s; |
5246 | } | |
5247 | ||
02aa26ce NT |
5248 | |
5249 | /* scan_str | |
5250 | takes: start position in buffer | |
5251 | returns: position to continue reading from buffer | |
5252 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
5253 | updates the read buffer. | |
5254 | ||
5255 | This subroutine pulls a string out of the input. It is called for: | |
5256 | q single quotes q(literal text) | |
5257 | ' single quotes 'literal text' | |
5258 | qq double quotes qq(interpolate $here please) | |
5259 | " double quotes "interpolate $here please" | |
5260 | qx backticks qx(/bin/ls -l) | |
5261 | ` backticks `/bin/ls -l` | |
5262 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
5263 | m// regexp match m/this/ | |
5264 | s/// regexp substitute s/this/that/ | |
5265 | tr/// string transliterate tr/this/that/ | |
5266 | y/// string transliterate y/this/that/ | |
5267 | ($*@) sub prototypes sub foo ($) | |
5268 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> | |
5269 | ||
5270 | In most of these cases (all but <>, patterns and transliterate) | |
5271 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
5272 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
5273 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
5274 | calls scan_str(). | |
5275 | ||
5276 | It skips whitespace before the string starts, and treats the first | |
5277 | character as the delimiter. If the delimiter is one of ([{< then | |
5278 | the corresponding "close" character )]}> is used as the closing | |
5279 | delimiter. It allows quoting of delimiters, and if the string has | |
5280 | balanced delimiters ([{<>}]) it allows nesting. | |
5281 | ||
5282 | The lexer always reads these strings into lex_stuff, except in the | |
5283 | case of the operators which take *two* arguments (s/// and tr///) | |
5284 | when it checks to see if lex_stuff is full (presumably with the 1st | |
5285 | arg to s or tr) and if so puts the string into lex_repl. | |
5286 | ||
5287 | */ | |
5288 | ||
8990e307 | 5289 | static char * |
8ac85365 | 5290 | scan_str(char *start) |
79072805 | 5291 | { |
11343788 | 5292 | dTHR; |
02aa26ce NT |
5293 | SV *sv; /* scalar value: string */ |
5294 | char *tmps; /* temp string, used for delimiter matching */ | |
5295 | register char *s = start; /* current position in the buffer */ | |
5296 | register char term; /* terminating character */ | |
5297 | register char *to; /* current position in the sv's data */ | |
5298 | I32 brackets = 1; /* bracket nesting level */ | |
5299 | ||
5300 | /* skip space before the delimiter */ | |
fb73857a | 5301 | if (isSPACE(*s)) |
5302 | s = skipspace(s); | |
02aa26ce NT |
5303 | |
5304 | /* mark where we are, in case we need to report errors */ | |
79072805 | 5305 | CLINE; |
02aa26ce NT |
5306 | |
5307 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 5308 | term = *s; |
02aa26ce | 5309 | /* mark where we are */ |
79072805 LW |
5310 | multi_start = curcop->cop_line; |
5311 | multi_open = term; | |
02aa26ce NT |
5312 | |
5313 | /* find corresponding closing delimiter */ | |
93a17b20 | 5314 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 LW |
5315 | term = tmps[5]; |
5316 | multi_close = term; | |
5317 | ||
02aa26ce NT |
5318 | /* create a new SV to hold the contents. 87 is leak category, I'm |
5319 | assuming. 80 is the SV's initial length. What a random number. */ | |
93a17b20 | 5320 | sv = NEWSV(87,80); |
ed6116ce LW |
5321 | sv_upgrade(sv, SVt_PVIV); |
5322 | SvIVX(sv) = term; | |
a0d0e21e | 5323 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
5324 | |
5325 | /* move past delimiter and try to read a complete string */ | |
93a17b20 LW |
5326 | s++; |
5327 | for (;;) { | |
02aa26ce | 5328 | /* extend sv if need be */ |
93a17b20 | 5329 | SvGROW(sv, SvCUR(sv) + (bufend - s) + 1); |
02aa26ce | 5330 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 5331 | to = SvPVX(sv)+SvCUR(sv); |
02aa26ce NT |
5332 | |
5333 | /* if open delimiter is the close delimiter read unbridle */ | |
93a17b20 LW |
5334 | if (multi_open == multi_close) { |
5335 | for (; s < bufend; s++,to++) { | |
02aa26ce | 5336 | /* embedded newlines increment the current line number */ |
463ee0b2 LW |
5337 | if (*s == '\n' && !rsfp) |
5338 | curcop->cop_line++; | |
02aa26ce | 5339 | /* handle quoted delimiters */ |
a0d0e21e LW |
5340 | if (*s == '\\' && s+1 < bufend && term != '\\') { |
5341 | if (s[1] == term) | |
5342 | s++; | |
02aa26ce | 5343 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
5344 | else |
5345 | *to++ = *s++; | |
5346 | } | |
02aa26ce NT |
5347 | /* terminate when run out of buffer (the for() condition), or |
5348 | have found the terminator */ | |
93a17b20 LW |
5349 | else if (*s == term) |
5350 | break; | |
5351 | *to = *s; | |
5352 | } | |
5353 | } | |
02aa26ce NT |
5354 | |
5355 | /* if the terminator isn't the same as the start character (e.g., | |
5356 | matched brackets), we have to allow more in the quoting, and | |
5357 | be prepared for nested brackets. | |
5358 | */ | |
93a17b20 | 5359 | else { |
02aa26ce | 5360 | /* read until we run out of string, or we find the terminator */ |
93a17b20 | 5361 | for (; s < bufend; s++,to++) { |
02aa26ce | 5362 | /* embedded newlines increment the line count */ |
463ee0b2 LW |
5363 | if (*s == '\n' && !rsfp) |
5364 | curcop->cop_line++; | |
02aa26ce | 5365 | /* backslashes can escape the open or closing characters */ |
6d07e5e9 GS |
5366 | if (*s == '\\' && s+1 < bufend) { |
5367 | if ((s[1] == multi_open) || (s[1] == multi_close)) | |
a0d0e21e LW |
5368 | s++; |
5369 | else | |
5370 | *to++ = *s++; | |
5371 | } | |
02aa26ce | 5372 | /* allow nested opens and closes */ |
6d07e5e9 | 5373 | else if (*s == multi_close && --brackets <= 0) |
93a17b20 LW |
5374 | break; |
5375 | else if (*s == multi_open) | |
5376 | brackets++; | |
5377 | *to = *s; | |
5378 | } | |
5379 | } | |
02aa26ce | 5380 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 5381 | *to = '\0'; |
463ee0b2 | 5382 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 5383 | |
02aa26ce NT |
5384 | /* |
5385 | * this next chunk reads more into the buffer if we're not done yet | |
5386 | */ | |
5387 | ||
5388 | if (s < bufend) break; /* handle case where we are done yet :-) */ | |
79072805 | 5389 | |
02aa26ce NT |
5390 | /* if we're out of file, or a read fails, bail and reset the current |
5391 | line marker so we can report where the unterminated string began | |
5392 | */ | |
79072805 | 5393 | if (!rsfp || |
fd049845 | 5394 | !(oldoldbufptr = oldbufptr = s = linestart = filter_gets(linestr, rsfp, 0))) { |
c07a80fd | 5395 | sv_free(sv); |
79072805 LW |
5396 | curcop->cop_line = multi_start; |
5397 | return Nullch; | |
5398 | } | |
02aa26ce | 5399 | /* we read a line, so increment our line counter */ |
79072805 | 5400 | curcop->cop_line++; |
02aa26ce NT |
5401 | |
5402 | /* update debugger info */ | |
84902520 | 5403 | if (PERLDB_LINE && curstash != debstash) { |
79072805 LW |
5404 | SV *sv = NEWSV(88,0); |
5405 | ||
93a17b20 | 5406 | sv_upgrade(sv, SVt_PVMG); |
79072805 LW |
5407 | sv_setsv(sv,linestr); |
5408 | av_store(GvAV(curcop->cop_filegv), | |
5409 | (I32)curcop->cop_line, sv); | |
395c3793 | 5410 | } |
02aa26ce NT |
5411 | |
5412 | /* having changed the buffer, we must update bufend */ | |
463ee0b2 | 5413 | bufend = SvPVX(linestr) + SvCUR(linestr); |
378cc40b | 5414 | } |
02aa26ce NT |
5415 | |
5416 | /* at this point, we have successfully read the delimited string */ | |
5417 | ||
79072805 LW |
5418 | multi_end = curcop->cop_line; |
5419 | s++; | |
02aa26ce NT |
5420 | |
5421 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
5422 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
5423 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 5424 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 5425 | } |
02aa26ce NT |
5426 | |
5427 | /* decide whether this is the first or second quoted string we've read | |
5428 | for this op | |
5429 | */ | |
5430 | ||
79072805 | 5431 | if (lex_stuff) |
93a17b20 | 5432 | lex_repl = sv; |
79072805 | 5433 | else |
93a17b20 | 5434 | lex_stuff = sv; |
378cc40b LW |
5435 | return s; |
5436 | } | |
5437 | ||
02aa26ce NT |
5438 | /* |
5439 | scan_num | |
5440 | takes: pointer to position in buffer | |
5441 | returns: pointer to new position in buffer | |
5442 | side-effects: builds ops for the constant in yylval.op | |
5443 | ||
5444 | Read a number in any of the formats that Perl accepts: | |
5445 | ||
5446 | 0(x[0-7A-F]+)|([0-7]+) | |
5447 | [\d_]+(\.[\d_]*)?[Ee](\d+) | |
5448 | ||
5449 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
5450 | underbars before a decimal point must be at three digit intervals. | |
5451 | ||
5452 | Like most scan_ routines, it uses the tokenbuf buffer to hold the | |
5453 | thing it reads. | |
5454 | ||
5455 | If it reads a number without a decimal point or an exponent, it will | |
5456 | try converting the number to an integer and see if it can do so | |
5457 | without loss of precision. | |
5458 | */ | |
5459 | ||
378cc40b | 5460 | char * |
8ac85365 | 5461 | scan_num(char *start) |
378cc40b | 5462 | { |
02aa26ce NT |
5463 | register char *s = start; /* current position in buffer */ |
5464 | register char *d; /* destination in temp buffer */ | |
5465 | register char *e; /* end of temp buffer */ | |
5466 | I32 tryiv; /* used to see if it can be an int */ | |
5467 | double value; /* number read, as a double */ | |
5468 | SV *sv; /* place to put the converted number */ | |
5469 | I32 floatit; /* boolean: int or float? */ | |
5470 | char *lastub = 0; /* position of last underbar */ | |
fc36a67e | 5471 | static char number_too_long[] = "Number too long"; |
378cc40b | 5472 | |
02aa26ce NT |
5473 | /* We use the first character to decide what type of number this is */ |
5474 | ||
378cc40b | 5475 | switch (*s) { |
79072805 | 5476 | default: |
02aa26ce NT |
5477 | croak("panic: scan_num"); |
5478 | ||
5479 | /* if it starts with a 0, it could be an octal number, a decimal in | |
5480 | 0.13 disguise, or a hexadecimal number. | |
5481 | */ | |
378cc40b LW |
5482 | case '0': |
5483 | { | |
02aa26ce NT |
5484 | /* variables: |
5485 | u holds the "number so far" | |
5486 | shift the power of 2 of the base (hex == 4, octal == 3) | |
5487 | overflowed was the number more than we can hold? | |
5488 | ||
5489 | Shift is used when we add a digit. It also serves as an "are | |
5490 | we in octal or hex?" indicator to disallow hex characters when | |
5491 | in octal mode. | |
5492 | */ | |
55497cff | 5493 | UV u; |
79072805 | 5494 | I32 shift; |
55497cff | 5495 | bool overflowed = FALSE; |
378cc40b | 5496 | |
02aa26ce | 5497 | /* check for hex */ |
378cc40b LW |
5498 | if (s[1] == 'x') { |
5499 | shift = 4; | |
5500 | s += 2; | |
5501 | } | |
02aa26ce | 5502 | /* check for a decimal in disguise */ |
378cc40b LW |
5503 | else if (s[1] == '.') |
5504 | goto decimal; | |
02aa26ce | 5505 | /* so it must be octal */ |
378cc40b LW |
5506 | else |
5507 | shift = 3; | |
55497cff | 5508 | u = 0; |
02aa26ce NT |
5509 | |
5510 | /* read the rest of the octal number */ | |
378cc40b | 5511 | for (;;) { |
02aa26ce | 5512 | UV n, b; /* n is used in the overflow test, b is the digit we're adding on */ |
55497cff | 5513 | |
378cc40b | 5514 | switch (*s) { |
02aa26ce NT |
5515 | |
5516 | /* if we don't mention it, we're done */ | |
378cc40b LW |
5517 | default: |
5518 | goto out; | |
02aa26ce NT |
5519 | |
5520 | /* _ are ignored */ | |
de3bb511 LW |
5521 | case '_': |
5522 | s++; | |
5523 | break; | |
02aa26ce NT |
5524 | |
5525 | /* 8 and 9 are not octal */ | |
378cc40b LW |
5526 | case '8': case '9': |
5527 | if (shift != 4) | |
a687059c | 5528 | yyerror("Illegal octal digit"); |
378cc40b | 5529 | /* FALL THROUGH */ |
02aa26ce NT |
5530 | |
5531 | /* octal digits */ | |
378cc40b LW |
5532 | case '0': case '1': case '2': case '3': case '4': |
5533 | case '5': case '6': case '7': | |
02aa26ce | 5534 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 5535 | goto digit; |
02aa26ce NT |
5536 | |
5537 | /* hex digits */ | |
378cc40b LW |
5538 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
5539 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 5540 | /* make sure they said 0x */ |
378cc40b LW |
5541 | if (shift != 4) |
5542 | goto out; | |
55497cff | 5543 | b = (*s++ & 7) + 9; |
02aa26ce NT |
5544 | |
5545 | /* Prepare to put the digit we have onto the end | |
5546 | of the number so far. We check for overflows. | |
5547 | */ | |
5548 | ||
55497cff | 5549 | digit: |
02aa26ce | 5550 | n = u << shift; /* make room for the digit */ |
55497cff | 5551 | if (!overflowed && (n >> shift) != u) { |
5552 | warn("Integer overflow in %s number", | |
5553 | (shift == 4) ? "hex" : "octal"); | |
5554 | overflowed = TRUE; | |
5555 | } | |
02aa26ce | 5556 | u = n | b; /* add the digit to the end */ |
378cc40b LW |
5557 | break; |
5558 | } | |
5559 | } | |
02aa26ce NT |
5560 | |
5561 | /* if we get here, we had success: make a scalar value from | |
5562 | the number. | |
5563 | */ | |
378cc40b | 5564 | out: |
79072805 | 5565 | sv = NEWSV(92,0); |
55497cff | 5566 | sv_setuv(sv, u); |
378cc40b LW |
5567 | } |
5568 | break; | |
02aa26ce NT |
5569 | |
5570 | /* | |
5571 | handle decimal numbers. | |
5572 | we're also sent here when we read a 0 as the first digit | |
5573 | */ | |
378cc40b LW |
5574 | case '1': case '2': case '3': case '4': case '5': |
5575 | case '6': case '7': case '8': case '9': case '.': | |
5576 | decimal: | |
378cc40b | 5577 | d = tokenbuf; |
fc36a67e | 5578 | e = tokenbuf + sizeof tokenbuf - 6; /* room for various punctuation */ |
79072805 | 5579 | floatit = FALSE; |
02aa26ce NT |
5580 | |
5581 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 5582 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
5583 | /* skip underscores, checking for misplaced ones |
5584 | if -w is on | |
5585 | */ | |
93a17b20 LW |
5586 | if (*s == '_') { |
5587 | if (dowarn && lastub && s - lastub != 3) | |
8990e307 | 5588 | warn("Misplaced _ in number"); |
93a17b20 LW |
5589 | lastub = ++s; |
5590 | } | |
fc36a67e | 5591 | else { |
02aa26ce | 5592 | /* check for end of fixed-length buffer */ |
fc36a67e | 5593 | if (d >= e) |
5594 | croak(number_too_long); | |
02aa26ce | 5595 | /* if we're ok, copy the character */ |
378cc40b | 5596 | *d++ = *s++; |
fc36a67e | 5597 | } |
378cc40b | 5598 | } |
02aa26ce NT |
5599 | |
5600 | /* final misplaced underbar check */ | |
93a17b20 | 5601 | if (dowarn && lastub && s - lastub != 3) |
8990e307 | 5602 | warn("Misplaced _ in number"); |
02aa26ce NT |
5603 | |
5604 | /* read a decimal portion if there is one. avoid | |
5605 | 3..5 being interpreted as the number 3. followed | |
5606 | by .5 | |
5607 | */ | |
2f3197b3 | 5608 | if (*s == '.' && s[1] != '.') { |
79072805 | 5609 | floatit = TRUE; |
378cc40b | 5610 | *d++ = *s++; |
02aa26ce NT |
5611 | |
5612 | /* copy, ignoring underbars, until we run out of | |
5613 | digits. Note: no misplaced underbar checks! | |
5614 | */ | |
fc36a67e | 5615 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 5616 | /* fixed length buffer check */ |
fc36a67e | 5617 | if (d >= e) |
5618 | croak(number_too_long); | |
5619 | if (*s != '_') | |
5620 | *d++ = *s; | |
378cc40b LW |
5621 | } |
5622 | } | |
02aa26ce NT |
5623 | |
5624 | /* read exponent part, if present */ | |
93a17b20 | 5625 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
5626 | floatit = TRUE; |
5627 | s++; | |
02aa26ce NT |
5628 | |
5629 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 5630 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
5631 | |
5632 | /* allow positive or negative exponent */ | |
378cc40b LW |
5633 | if (*s == '+' || *s == '-') |
5634 | *d++ = *s++; | |
02aa26ce NT |
5635 | |
5636 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 5637 | while (isDIGIT(*s)) { |
5638 | if (d >= e) | |
5639 | croak(number_too_long); | |
378cc40b | 5640 | *d++ = *s++; |
fc36a67e | 5641 | } |
378cc40b | 5642 | } |
02aa26ce NT |
5643 | |
5644 | /* terminate the string */ | |
378cc40b | 5645 | *d = '\0'; |
02aa26ce NT |
5646 | |
5647 | /* make an sv from the string */ | |
79072805 | 5648 | sv = NEWSV(92,0); |
02aa26ce | 5649 | /* reset numeric locale in case we were earlier left in Swaziland */ |
36477c24 | 5650 | SET_NUMERIC_STANDARD(); |
79072805 | 5651 | value = atof(tokenbuf); |
02aa26ce NT |
5652 | |
5653 | /* | |
5654 | See if we can make do with an integer value without loss of | |
5655 | precision. We use I_V to cast to an int, because some | |
5656 | compilers have issues. Then we try casting it back and see | |
5657 | if it was the same. We only do this if we know we | |
5658 | specifically read an integer. | |
5659 | ||
5660 | Note: if floatit is true, then we don't need to do the | |
5661 | conversion at all. | |
5662 | */ | |
1e422769 | 5663 | tryiv = I_V(value); |
5664 | if (!floatit && (double)tryiv == value) | |
5665 | sv_setiv(sv, tryiv); | |
2f3197b3 | 5666 | else |
1e422769 | 5667 | sv_setnv(sv, value); |
378cc40b | 5668 | break; |
79072805 | 5669 | } |
a687059c | 5670 | |
02aa26ce NT |
5671 | /* make the op for the constant and return */ |
5672 | ||
79072805 | 5673 | yylval.opval = newSVOP(OP_CONST, 0, sv); |
a687059c | 5674 | |
378cc40b LW |
5675 | return s; |
5676 | } | |
5677 | ||
8990e307 | 5678 | static char * |
8ac85365 | 5679 | scan_formline(register char *s) |
378cc40b | 5680 | { |
11343788 | 5681 | dTHR; |
79072805 | 5682 | register char *eol; |
378cc40b | 5683 | register char *t; |
a0d0e21e | 5684 | SV *stuff = newSVpv("",0); |
79072805 | 5685 | bool needargs = FALSE; |
378cc40b | 5686 | |
79072805 | 5687 | while (!needargs) { |
85e6fe83 | 5688 | if (*s == '.' || *s == '}') { |
79072805 LW |
5689 | /*SUPPRESS 530*/ |
5690 | for (t = s+1; *t == ' ' || *t == '\t'; t++) ; | |
5691 | if (*t == '\n') | |
5692 | break; | |
5693 | } | |
0f85fab0 | 5694 | if (in_eval && !rsfp) { |
93a17b20 | 5695 | eol = strchr(s,'\n'); |
0f85fab0 LW |
5696 | if (!eol++) |
5697 | eol = bufend; | |
5698 | } | |
5699 | else | |
463ee0b2 | 5700 | eol = bufend = SvPVX(linestr) + SvCUR(linestr); |
79072805 | 5701 | if (*s != '#') { |
a0d0e21e LW |
5702 | for (t = s; t < eol; t++) { |
5703 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
5704 | needargs = FALSE; | |
5705 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 5706 | } |
a0d0e21e LW |
5707 | if (*t == '@' || *t == '^') |
5708 | needargs = TRUE; | |
378cc40b | 5709 | } |
a0d0e21e | 5710 | sv_catpvn(stuff, s, eol-s); |
79072805 LW |
5711 | } |
5712 | s = eol; | |
5713 | if (rsfp) { | |
fd049845 | 5714 | s = filter_gets(linestr, rsfp, 0); |
5715 | oldoldbufptr = oldbufptr = bufptr = linestart = SvPVX(linestr); | |
a0d0e21e | 5716 | bufend = bufptr + SvCUR(linestr); |
79072805 LW |
5717 | if (!s) { |
5718 | s = bufptr; | |
5719 | yyerror("Format not terminated"); | |
378cc40b LW |
5720 | break; |
5721 | } | |
378cc40b | 5722 | } |
463ee0b2 | 5723 | incline(s); |
79072805 | 5724 | } |
a0d0e21e LW |
5725 | enough: |
5726 | if (SvCUR(stuff)) { | |
463ee0b2 | 5727 | expect = XTERM; |
79072805 | 5728 | if (needargs) { |
a0d0e21e | 5729 | lex_state = LEX_NORMAL; |
79072805 LW |
5730 | nextval[nexttoke].ival = 0; |
5731 | force_next(','); | |
5732 | } | |
a0d0e21e LW |
5733 | else |
5734 | lex_state = LEX_FORMLINE; | |
79072805 LW |
5735 | nextval[nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
5736 | force_next(THING); | |
5737 | nextval[nexttoke].ival = OP_FORMLINE; | |
5738 | force_next(LSTOP); | |
378cc40b | 5739 | } |
79072805 | 5740 | else { |
8990e307 | 5741 | SvREFCNT_dec(stuff); |
85e6fe83 | 5742 | lex_formbrack = 0; |
79072805 LW |
5743 | bufptr = s; |
5744 | } | |
5745 | return s; | |
378cc40b | 5746 | } |
a687059c | 5747 | |
2f3197b3 | 5748 | static void |
8ac85365 | 5749 | set_csh(void) |
a687059c | 5750 | { |
ae986130 LW |
5751 | #ifdef CSH |
5752 | if (!cshlen) | |
5753 | cshlen = strlen(cshname); | |
5754 | #endif | |
a687059c | 5755 | } |
463ee0b2 | 5756 | |
ba6d6ac9 | 5757 | I32 |
8ac85365 | 5758 | start_subparse(I32 is_format, U32 flags) |
8990e307 | 5759 | { |
11343788 | 5760 | dTHR; |
ba6d6ac9 | 5761 | I32 oldsavestack_ix = savestack_ix; |
748a9306 LW |
5762 | CV* outsidecv = compcv; |
5763 | AV* comppadlist; | |
8990e307 | 5764 | |
e9a444f0 LW |
5765 | if (compcv) { |
5766 | assert(SvTYPE(compcv) == SVt_PVCV); | |
5767 | } | |
8990e307 LW |
5768 | save_I32(&subline); |
5769 | save_item(subname); | |
55497cff | 5770 | SAVEI32(padix); |
8990e307 LW |
5771 | SAVESPTR(curpad); |
5772 | SAVESPTR(comppad); | |
5773 | SAVESPTR(comppad_name); | |
748a9306 | 5774 | SAVESPTR(compcv); |
55497cff | 5775 | SAVEI32(comppad_name_fill); |
5776 | SAVEI32(min_intro_pending); | |
5777 | SAVEI32(max_intro_pending); | |
5778 | SAVEI32(pad_reset_pending); | |
748a9306 LW |
5779 | |
5780 | compcv = (CV*)NEWSV(1104,0); | |
774d564b | 5781 | sv_upgrade((SV *)compcv, is_format ? SVt_PVFM : SVt_PVCV); |
fa83b5b6 | 5782 | CvFLAGS(compcv) |= flags; |
748a9306 | 5783 | |
8990e307 | 5784 | comppad = newAV(); |
6d4ff0d2 MB |
5785 | av_push(comppad, Nullsv); |
5786 | curpad = AvARRAY(comppad); | |
8990e307 LW |
5787 | comppad_name = newAV(); |
5788 | comppad_name_fill = 0; | |
5789 | min_intro_pending = 0; | |
8990e307 | 5790 | padix = 0; |
8990e307 | 5791 | subline = curcop->cop_line; |
6d4ff0d2 MB |
5792 | #ifdef USE_THREADS |
5793 | av_store(comppad_name, 0, newSVpv("@_", 2)); | |
5794 | curpad[0] = (SV*)newAV(); | |
5795 | SvPADMY_on(curpad[0]); /* XXX Needed? */ | |
5796 | CvOWNER(compcv) = 0; | |
12ca11f6 | 5797 | New(666, CvMUTEXP(compcv), 1, perl_mutex); |
6d4ff0d2 | 5798 | MUTEX_INIT(CvMUTEXP(compcv)); |
6d4ff0d2 | 5799 | #endif /* USE_THREADS */ |
748a9306 LW |
5800 | |
5801 | comppadlist = newAV(); | |
5802 | AvREAL_off(comppadlist); | |
8e07c86e AD |
5803 | av_store(comppadlist, 0, (SV*)comppad_name); |
5804 | av_store(comppadlist, 1, (SV*)comppad); | |
748a9306 LW |
5805 | |
5806 | CvPADLIST(compcv) = comppadlist; | |
199100c8 | 5807 | CvOUTSIDE(compcv) = (CV*)SvREFCNT_inc(outsidecv); |
11343788 MB |
5808 | #ifdef USE_THREADS |
5809 | CvOWNER(compcv) = 0; | |
12ca11f6 | 5810 | New(666, CvMUTEXP(compcv), 1, perl_mutex); |
11343788 | 5811 | MUTEX_INIT(CvMUTEXP(compcv)); |
11343788 | 5812 | #endif /* USE_THREADS */ |
748a9306 | 5813 | |
8990e307 LW |
5814 | return oldsavestack_ix; |
5815 | } | |
5816 | ||
5817 | int | |
8ac85365 | 5818 | yywarn(char *s) |
8990e307 | 5819 | { |
11343788 | 5820 | dTHR; |
8990e307 | 5821 | --error_count; |
748a9306 LW |
5822 | in_eval |= 2; |
5823 | yyerror(s); | |
5824 | in_eval &= ~2; | |
5825 | return 0; | |
8990e307 LW |
5826 | } |
5827 | ||
5828 | int | |
8ac85365 | 5829 | yyerror(char *s) |
463ee0b2 | 5830 | { |
11343788 | 5831 | dTHR; |
68dc0745 | 5832 | char *where = NULL; |
5833 | char *context = NULL; | |
5834 | int contlen = -1; | |
46fc3d4c | 5835 | SV *msg; |
463ee0b2 | 5836 | |
54310121 | 5837 | if (!yychar || (yychar == ';' && !rsfp)) |
5838 | where = "at EOF"; | |
5839 | else if (bufptr > oldoldbufptr && bufptr - oldoldbufptr < 200 && | |
463ee0b2 LW |
5840 | oldoldbufptr != oldbufptr && oldbufptr != bufptr) { |
5841 | while (isSPACE(*oldoldbufptr)) | |
5842 | oldoldbufptr++; | |
68dc0745 | 5843 | context = oldoldbufptr; |
5844 | contlen = bufptr - oldoldbufptr; | |
463ee0b2 LW |
5845 | } |
5846 | else if (bufptr > oldbufptr && bufptr - oldbufptr < 200 && | |
5847 | oldbufptr != bufptr) { | |
5848 | while (isSPACE(*oldbufptr)) | |
5849 | oldbufptr++; | |
68dc0745 | 5850 | context = oldbufptr; |
5851 | contlen = bufptr - oldbufptr; | |
463ee0b2 LW |
5852 | } |
5853 | else if (yychar > 255) | |
68dc0745 | 5854 | where = "next token ???"; |
463ee0b2 LW |
5855 | else if ((yychar & 127) == 127) { |
5856 | if (lex_state == LEX_NORMAL || | |
5857 | (lex_state == LEX_KNOWNEXT && lex_defer == LEX_NORMAL)) | |
68dc0745 | 5858 | where = "at end of line"; |
4633a7c4 | 5859 | else if (lex_inpat) |
68dc0745 | 5860 | where = "within pattern"; |
463ee0b2 | 5861 | else |
68dc0745 | 5862 | where = "within string"; |
463ee0b2 | 5863 | } |
46fc3d4c | 5864 | else { |
5865 | SV *where_sv = sv_2mortal(newSVpv("next char ", 0)); | |
5866 | if (yychar < 32) | |
5867 | sv_catpvf(where_sv, "^%c", toCTRL(yychar)); | |
5868 | else if (isPRINT_LC(yychar)) | |
5869 | sv_catpvf(where_sv, "%c", yychar); | |
463ee0b2 | 5870 | else |
46fc3d4c | 5871 | sv_catpvf(where_sv, "\\%03o", yychar & 255); |
5872 | where = SvPVX(where_sv); | |
463ee0b2 | 5873 | } |
46fc3d4c | 5874 | msg = sv_2mortal(newSVpv(s, 0)); |
fc36a67e | 5875 | sv_catpvf(msg, " at %_ line %ld, ", |
46fc3d4c | 5876 | GvSV(curcop->cop_filegv), (long)curcop->cop_line); |
68dc0745 | 5877 | if (context) |
46fc3d4c | 5878 | sv_catpvf(msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 5879 | else |
46fc3d4c | 5880 | sv_catpvf(msg, "%s\n", where); |
4fdae800 | 5881 | if (multi_start < multi_end && (U32)(curcop->cop_line - multi_end) <= 1) { |
46fc3d4c | 5882 | sv_catpvf(msg, |
4fdae800 | 5883 | " (Might be a runaway multi-line %c%c string starting on line %ld)\n", |
ff0cee69 | 5884 | (int)multi_open,(int)multi_close,(long)multi_start); |
a0d0e21e LW |
5885 | multi_end = 0; |
5886 | } | |
748a9306 | 5887 | if (in_eval & 2) |
fc36a67e | 5888 | warn("%_", msg); |
748a9306 | 5889 | else if (in_eval) |
38a03e6e | 5890 | sv_catsv(ERRSV, msg); |
463ee0b2 | 5891 | else |
46fc3d4c | 5892 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); |
463ee0b2 | 5893 | if (++error_count >= 10) |
fc36a67e | 5894 | croak("%_ has too many errors.\n", GvSV(curcop->cop_filegv)); |
4633a7c4 | 5895 | in_my = 0; |
c750a3ec | 5896 | in_my_stash = Nullhv; |
463ee0b2 LW |
5897 | return 0; |
5898 | } | |
4e35701f | 5899 | |
161b471a | 5900 |