Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
14 | #include "EXTERN.h" | |
15 | #include "perl.h" | |
378cc40b | 16 | |
76e3520e | 17 | #ifndef PERL_OBJECT |
a0d0e21e LW |
18 | static void check_uni _((void)); |
19 | static void force_next _((I32 type)); | |
89bfa8cd | 20 | static char *force_version _((char *start)); |
a0d0e21e | 21 | static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick)); |
76e3520e | 22 | static SV *tokeq _((SV *sv)); |
a0d0e21e LW |
23 | static char *scan_const _((char *start)); |
24 | static char *scan_formline _((char *s)); | |
25 | static char *scan_heredoc _((char *s)); | |
8903cb82 | 26 | static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen, |
27 | I32 ck_uni)); | |
a0d0e21e | 28 | static char *scan_inputsymbol _((char *start)); |
8782bef2 | 29 | static char *scan_pat _((char *start, I32 type)); |
a0d0e21e LW |
30 | static char *scan_str _((char *start)); |
31 | static char *scan_subst _((char *start)); | |
32 | static char *scan_trans _((char *start)); | |
8903cb82 | 33 | static char *scan_word _((char *s, char *dest, STRLEN destlen, |
34 | int allow_package, STRLEN *slp)); | |
a0d0e21e LW |
35 | static char *skipspace _((char *s)); |
36 | static void checkcomma _((char *s, char *name, char *what)); | |
37 | static void force_ident _((char *s, int kind)); | |
38 | static void incline _((char *s)); | |
39 | static int intuit_method _((char *s, GV *gv)); | |
40 | static int intuit_more _((char *s)); | |
41 | static I32 lop _((I32 f, expectation x, char *s)); | |
42 | static void missingterm _((char *s)); | |
43 | static void no_op _((char *what, char *s)); | |
44 | static void set_csh _((void)); | |
45 | static I32 sublex_done _((void)); | |
55497cff | 46 | static I32 sublex_push _((void)); |
a0d0e21e LW |
47 | static I32 sublex_start _((void)); |
48 | #ifdef CRIPPLED_CC | |
49 | static int uni _((I32 f, char *s)); | |
50 | #endif | |
fd049845 | 51 | static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append)); |
6d5fb7e3 | 52 | static void restore_rsfp _((void *f)); |
b3ac6de7 | 53 | static SV *new_constant _((char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type)); |
49d8d3a1 MB |
54 | static void restore_expect _((void *e)); |
55 | static void restore_lex_expect _((void *e)); | |
76e3520e | 56 | #endif /* PERL_OBJECT */ |
2f3197b3 | 57 | |
fc36a67e | 58 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 59 | |
a0ed51b3 LW |
60 | #define UTF (PL_hints & HINT_UTF8) |
61 | ||
79072805 LW |
62 | /* The following are arranged oddly so that the guard on the switch statement |
63 | * can get by with a single comparison (if the compiler is smart enough). | |
64 | */ | |
65 | ||
fb73857a | 66 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
67 | ||
55497cff | 68 | #define LEX_NORMAL 10 |
69 | #define LEX_INTERPNORMAL 9 | |
70 | #define LEX_INTERPCASEMOD 8 | |
71 | #define LEX_INTERPPUSH 7 | |
72 | #define LEX_INTERPSTART 6 | |
73 | #define LEX_INTERPEND 5 | |
74 | #define LEX_INTERPENDMAYBE 4 | |
75 | #define LEX_INTERPCONCAT 3 | |
76 | #define LEX_INTERPCONST 2 | |
77 | #define LEX_FORMLINE 1 | |
78 | #define LEX_KNOWNEXT 0 | |
79072805 | 79 | |
395c3793 LW |
80 | #ifdef I_FCNTL |
81 | #include <fcntl.h> | |
82 | #endif | |
fe14fcc3 LW |
83 | #ifdef I_SYS_FILE |
84 | #include <sys/file.h> | |
85 | #endif | |
395c3793 | 86 | |
a790bc05 | 87 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
88 | #ifdef I_UNISTD | |
89 | # include <unistd.h> /* Needed for execv() */ | |
90 | #endif | |
91 | ||
92 | ||
79072805 LW |
93 | #ifdef ff_next |
94 | #undef ff_next | |
d48672a2 LW |
95 | #endif |
96 | ||
79072805 | 97 | #include "keywords.h" |
fe14fcc3 | 98 | |
ae986130 LW |
99 | #ifdef CLINE |
100 | #undef CLINE | |
101 | #endif | |
3280af22 NIS |
102 | #define CLINE (PL_copline = (PL_curcop->cop_line < PL_copline ? PL_curcop->cop_line : PL_copline)) |
103 | ||
104 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) | |
105 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
106 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
107 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
108 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
109 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
110 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
111 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
112 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
113 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
114 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
115 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
116 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
117 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
118 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
119 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
120 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
121 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
122 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
123 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 124 | |
a687059c LW |
125 | /* This bit of chicanery makes a unary function followed by |
126 | * a parenthesis into a function with one argument, highest precedence. | |
127 | */ | |
2f3197b3 | 128 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
129 | PL_expect = XTERM, \ |
130 | PL_bufptr = s, \ | |
131 | PL_last_uni = PL_oldbufptr, \ | |
132 | PL_last_lop_op = f, \ | |
a687059c LW |
133 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
134 | ||
79072805 | 135 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
136 | PL_bufptr = s, \ |
137 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
138 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
139 | ||
9f68db38 | 140 | /* grandfather return to old style */ |
3280af22 | 141 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 142 | |
76e3520e | 143 | STATIC int |
8ac85365 | 144 | ao(int toketype) |
a0d0e21e | 145 | { |
3280af22 NIS |
146 | if (*PL_bufptr == '=') { |
147 | PL_bufptr++; | |
a0d0e21e LW |
148 | if (toketype == ANDAND) |
149 | yylval.ival = OP_ANDASSIGN; | |
150 | else if (toketype == OROR) | |
151 | yylval.ival = OP_ORASSIGN; | |
152 | toketype = ASSIGNOP; | |
153 | } | |
154 | return toketype; | |
155 | } | |
156 | ||
76e3520e | 157 | STATIC void |
8ac85365 | 158 | no_op(char *what, char *s) |
463ee0b2 | 159 | { |
3280af22 NIS |
160 | char *oldbp = PL_bufptr; |
161 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 162 | |
3280af22 | 163 | PL_bufptr = s; |
46fc3d4c | 164 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 165 | if (is_first) |
a0d0e21e | 166 | warn("\t(Missing semicolon on previous line?)\n"); |
3280af22 | 167 | else if (PL_oldoldbufptr && isIDFIRST(*PL_oldoldbufptr)) { |
748a9306 | 168 | char *t; |
3280af22 NIS |
169 | for (t = PL_oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ; |
170 | if (t < PL_bufptr && isSPACE(*t)) | |
748a9306 | 171 | warn("\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 172 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
173 | |
174 | } | |
175 | else | |
176 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
3280af22 | 177 | PL_bufptr = oldbp; |
8990e307 LW |
178 | } |
179 | ||
76e3520e | 180 | STATIC void |
8ac85365 | 181 | missingterm(char *s) |
8990e307 LW |
182 | { |
183 | char tmpbuf[3]; | |
184 | char q; | |
185 | if (s) { | |
186 | char *nl = strrchr(s,'\n'); | |
d2719217 | 187 | if (nl) |
8990e307 LW |
188 | *nl = '\0'; |
189 | } | |
9d116dd7 JH |
190 | else if ( |
191 | #ifdef EBCDIC | |
192 | iscntrl(PL_multi_close) | |
193 | #else | |
194 | PL_multi_close < 32 || PL_multi_close == 127 | |
195 | #endif | |
196 | ) { | |
8990e307 | 197 | *tmpbuf = '^'; |
3280af22 | 198 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
199 | s = "\\n"; |
200 | tmpbuf[2] = '\0'; | |
201 | s = tmpbuf; | |
202 | } | |
203 | else { | |
3280af22 | 204 | *tmpbuf = PL_multi_close; |
8990e307 LW |
205 | tmpbuf[1] = '\0'; |
206 | s = tmpbuf; | |
207 | } | |
208 | q = strchr(s,'"') ? '\'' : '"'; | |
209 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 210 | } |
79072805 LW |
211 | |
212 | void | |
8ac85365 | 213 | deprecate(char *s) |
a0d0e21e | 214 | { |
d008e5eb | 215 | dTHR; |
599cee73 PM |
216 | if (ckWARN(WARN_DEPRECATED)) |
217 | warner(WARN_DEPRECATED, "Use of %s is deprecated", s); | |
a0d0e21e LW |
218 | } |
219 | ||
76e3520e | 220 | STATIC void |
8ac85365 | 221 | depcom(void) |
a0d0e21e LW |
222 | { |
223 | deprecate("comma-less variable list"); | |
224 | } | |
225 | ||
a868473f NIS |
226 | #ifdef WIN32 |
227 | ||
76e3520e | 228 | STATIC I32 |
a868473f NIS |
229 | win32_textfilter(int idx, SV *sv, int maxlen) |
230 | { | |
231 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
232 | if (count > 0 && !maxlen) | |
233 | win32_strip_return(sv); | |
234 | return count; | |
235 | } | |
236 | #endif | |
237 | ||
dfe13c55 GS |
238 | #ifndef PERL_OBJECT |
239 | ||
a0ed51b3 LW |
240 | STATIC I32 |
241 | utf16_textfilter(int idx, SV *sv, int maxlen) | |
242 | { | |
243 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
244 | if (count) { | |
dfe13c55 GS |
245 | U8* tmps; |
246 | U8* tend; | |
247 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 248 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 249 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
250 | |
251 | } | |
252 | return count; | |
253 | } | |
254 | ||
255 | STATIC I32 | |
256 | utf16rev_textfilter(int idx, SV *sv, int maxlen) | |
257 | { | |
258 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
259 | if (count) { | |
dfe13c55 GS |
260 | U8* tmps; |
261 | U8* tend; | |
262 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 263 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 264 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
265 | |
266 | } | |
267 | return count; | |
268 | } | |
a868473f | 269 | |
dfe13c55 GS |
270 | #endif |
271 | ||
a0d0e21e | 272 | void |
8ac85365 | 273 | lex_start(SV *line) |
79072805 | 274 | { |
0f15f207 | 275 | dTHR; |
8990e307 LW |
276 | char *s; |
277 | STRLEN len; | |
278 | ||
3280af22 NIS |
279 | SAVEI32(PL_lex_dojoin); |
280 | SAVEI32(PL_lex_brackets); | |
281 | SAVEI32(PL_lex_fakebrack); | |
282 | SAVEI32(PL_lex_casemods); | |
283 | SAVEI32(PL_lex_starts); | |
284 | SAVEI32(PL_lex_state); | |
285 | SAVESPTR(PL_lex_inpat); | |
286 | SAVEI32(PL_lex_inwhat); | |
287 | SAVEI16(PL_curcop->cop_line); | |
288 | SAVEPPTR(PL_bufptr); | |
289 | SAVEPPTR(PL_bufend); | |
290 | SAVEPPTR(PL_oldbufptr); | |
291 | SAVEPPTR(PL_oldoldbufptr); | |
292 | SAVEPPTR(PL_linestart); | |
293 | SAVESPTR(PL_linestr); | |
294 | SAVEPPTR(PL_lex_brackstack); | |
295 | SAVEPPTR(PL_lex_casestack); | |
296 | SAVEDESTRUCTOR(restore_rsfp, PL_rsfp); | |
297 | SAVESPTR(PL_lex_stuff); | |
298 | SAVEI32(PL_lex_defer); | |
299 | SAVESPTR(PL_lex_repl); | |
300 | SAVEDESTRUCTOR(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ | |
301 | SAVEDESTRUCTOR(restore_lex_expect, PL_tokenbuf + PL_expect); | |
302 | ||
303 | PL_lex_state = LEX_NORMAL; | |
304 | PL_lex_defer = 0; | |
305 | PL_expect = XSTATE; | |
306 | PL_lex_brackets = 0; | |
307 | PL_lex_fakebrack = 0; | |
308 | New(899, PL_lex_brackstack, 120, char); | |
309 | New(899, PL_lex_casestack, 12, char); | |
310 | SAVEFREEPV(PL_lex_brackstack); | |
311 | SAVEFREEPV(PL_lex_casestack); | |
312 | PL_lex_casemods = 0; | |
313 | *PL_lex_casestack = '\0'; | |
314 | PL_lex_dojoin = 0; | |
315 | PL_lex_starts = 0; | |
316 | PL_lex_stuff = Nullsv; | |
317 | PL_lex_repl = Nullsv; | |
318 | PL_lex_inpat = 0; | |
319 | PL_lex_inwhat = 0; | |
320 | PL_linestr = line; | |
321 | if (SvREADONLY(PL_linestr)) | |
322 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
323 | s = SvPV(PL_linestr, len); | |
8990e307 | 324 | if (len && s[len-1] != ';') { |
3280af22 NIS |
325 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
326 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
327 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 328 | } |
3280af22 NIS |
329 | SvTEMP_off(PL_linestr); |
330 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
331 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
332 | SvREFCNT_dec(PL_rs); | |
333 | PL_rs = newSVpv("\n", 1); | |
334 | PL_rsfp = 0; | |
79072805 | 335 | } |
a687059c | 336 | |
463ee0b2 | 337 | void |
8ac85365 | 338 | lex_end(void) |
463ee0b2 | 339 | { |
3280af22 | 340 | PL_doextract = FALSE; |
463ee0b2 LW |
341 | } |
342 | ||
76e3520e | 343 | STATIC void |
8ac85365 | 344 | restore_rsfp(void *f) |
6d5fb7e3 | 345 | { |
760ac839 | 346 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 347 | |
3280af22 NIS |
348 | if (PL_rsfp == PerlIO_stdin()) |
349 | PerlIO_clearerr(PL_rsfp); | |
350 | else if (PL_rsfp && (PL_rsfp != fp)) | |
351 | PerlIO_close(PL_rsfp); | |
352 | PL_rsfp = fp; | |
6d5fb7e3 CS |
353 | } |
354 | ||
76e3520e | 355 | STATIC void |
7fae4e64 | 356 | restore_expect(void *e) |
49d8d3a1 MB |
357 | { |
358 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 359 | PL_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
360 | } |
361 | ||
837485b6 | 362 | STATIC void |
7fae4e64 | 363 | restore_lex_expect(void *e) |
49d8d3a1 MB |
364 | { |
365 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 366 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
367 | } |
368 | ||
837485b6 | 369 | STATIC void |
8ac85365 | 370 | incline(char *s) |
463ee0b2 | 371 | { |
0f15f207 | 372 | dTHR; |
463ee0b2 LW |
373 | char *t; |
374 | char *n; | |
375 | char ch; | |
376 | int sawline = 0; | |
377 | ||
3280af22 | 378 | PL_curcop->cop_line++; |
463ee0b2 LW |
379 | if (*s++ != '#') |
380 | return; | |
381 | while (*s == ' ' || *s == '\t') s++; | |
382 | if (strnEQ(s, "line ", 5)) { | |
383 | s += 5; | |
384 | sawline = 1; | |
385 | } | |
386 | if (!isDIGIT(*s)) | |
387 | return; | |
388 | n = s; | |
389 | while (isDIGIT(*s)) | |
390 | s++; | |
391 | while (*s == ' ' || *s == '\t') | |
392 | s++; | |
393 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
394 | s++; | |
395 | else { | |
396 | if (!sawline) | |
397 | return; /* false alarm */ | |
398 | for (t = s; !isSPACE(*t); t++) ; | |
399 | } | |
400 | ch = *t; | |
401 | *t = '\0'; | |
402 | if (t - s > 0) | |
3280af22 | 403 | PL_curcop->cop_filegv = gv_fetchfile(s); |
463ee0b2 | 404 | else |
3280af22 | 405 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
463ee0b2 | 406 | *t = ch; |
3280af22 | 407 | PL_curcop->cop_line = atoi(n)-1; |
463ee0b2 LW |
408 | } |
409 | ||
76e3520e | 410 | STATIC char * |
8ac85365 | 411 | skipspace(register char *s) |
a687059c | 412 | { |
11343788 | 413 | dTHR; |
3280af22 NIS |
414 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
415 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
416 | s++; |
417 | return s; | |
418 | } | |
419 | for (;;) { | |
fd049845 | 420 | STRLEN prevlen; |
3280af22 | 421 | while (s < PL_bufend && isSPACE(*s)) |
463ee0b2 | 422 | s++; |
3280af22 NIS |
423 | if (s < PL_bufend && *s == '#') { |
424 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 425 | s++; |
3280af22 | 426 | if (s < PL_bufend) |
463ee0b2 LW |
427 | s++; |
428 | } | |
3280af22 | 429 | if (s < PL_bufend || !PL_rsfp || PL_lex_state != LEX_NORMAL) |
463ee0b2 | 430 | return s; |
3280af22 NIS |
431 | if ((s = filter_gets(PL_linestr, PL_rsfp, (prevlen = SvCUR(PL_linestr)))) == Nullch) { |
432 | if (PL_minus_n || PL_minus_p) { | |
433 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
434 | ";}continue{print or die qq(-p destination: $!\\n)" : |
435 | ""); | |
3280af22 NIS |
436 | sv_catpv(PL_linestr,";}"); |
437 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
438 | } |
439 | else | |
3280af22 NIS |
440 | sv_setpv(PL_linestr,";"); |
441 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
442 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
443 | if (PL_preprocess && !PL_in_eval) | |
444 | (void)PerlProc_pclose(PL_rsfp); | |
445 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
446 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 447 | else |
3280af22 NIS |
448 | (void)PerlIO_close(PL_rsfp); |
449 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
450 | return s; |
451 | } | |
3280af22 NIS |
452 | PL_linestart = PL_bufptr = s + prevlen; |
453 | PL_bufend = s + SvCUR(PL_linestr); | |
454 | s = PL_bufptr; | |
a0d0e21e | 455 | incline(s); |
3280af22 | 456 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
457 | SV *sv = NEWSV(85,0); |
458 | ||
459 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
460 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
461 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
8990e307 | 462 | } |
463ee0b2 | 463 | } |
a687059c | 464 | } |
378cc40b | 465 | |
76e3520e | 466 | STATIC void |
8ac85365 | 467 | check_uni(void) { |
2f3197b3 LW |
468 | char *s; |
469 | char ch; | |
a0d0e21e | 470 | char *t; |
2f3197b3 | 471 | |
3280af22 | 472 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 473 | return; |
3280af22 NIS |
474 | while (isSPACE(*PL_last_uni)) |
475 | PL_last_uni++; | |
476 | for (s = PL_last_uni; isALNUM(*s) || *s == '-'; s++) ; | |
477 | if ((t = strchr(s, '(')) && t < PL_bufptr) | |
a0d0e21e | 478 | return; |
2f3197b3 LW |
479 | ch = *s; |
480 | *s = '\0'; | |
3280af22 | 481 | warn("Warning: Use of \"%s\" without parens is ambiguous", PL_last_uni); |
2f3197b3 LW |
482 | *s = ch; |
483 | } | |
484 | ||
ffed7fef LW |
485 | #ifdef CRIPPLED_CC |
486 | ||
487 | #undef UNI | |
ffed7fef | 488 | #define UNI(f) return uni(f,s) |
ffed7fef | 489 | |
76e3520e | 490 | STATIC int |
8ac85365 | 491 | uni(I32 f, char *s) |
ffed7fef LW |
492 | { |
493 | yylval.ival = f; | |
3280af22 NIS |
494 | PL_expect = XTERM; |
495 | PL_bufptr = s; | |
8f872242 NIS |
496 | PL_last_uni = PL_oldbufptr; |
497 | PL_last_lop_op = f; | |
ffed7fef LW |
498 | if (*s == '(') |
499 | return FUNC1; | |
500 | s = skipspace(s); | |
501 | if (*s == '(') | |
502 | return FUNC1; | |
503 | else | |
504 | return UNIOP; | |
505 | } | |
506 | ||
a0d0e21e LW |
507 | #endif /* CRIPPLED_CC */ |
508 | ||
509 | #define LOP(f,x) return lop(f,x,s) | |
510 | ||
76e3520e | 511 | STATIC I32 |
0fa19009 | 512 | lop(I32 f, expectation x, char *s) |
ffed7fef | 513 | { |
0f15f207 | 514 | dTHR; |
79072805 | 515 | yylval.ival = f; |
35c8bce7 | 516 | CLINE; |
3280af22 NIS |
517 | PL_expect = x; |
518 | PL_bufptr = s; | |
519 | PL_last_lop = PL_oldbufptr; | |
520 | PL_last_lop_op = f; | |
521 | if (PL_nexttoke) | |
a0d0e21e | 522 | return LSTOP; |
79072805 LW |
523 | if (*s == '(') |
524 | return FUNC; | |
525 | s = skipspace(s); | |
526 | if (*s == '(') | |
527 | return FUNC; | |
528 | else | |
529 | return LSTOP; | |
530 | } | |
531 | ||
76e3520e | 532 | STATIC void |
8ac85365 | 533 | force_next(I32 type) |
79072805 | 534 | { |
3280af22 NIS |
535 | PL_nexttype[PL_nexttoke] = type; |
536 | PL_nexttoke++; | |
537 | if (PL_lex_state != LEX_KNOWNEXT) { | |
538 | PL_lex_defer = PL_lex_state; | |
539 | PL_lex_expect = PL_expect; | |
540 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
541 | } |
542 | } | |
543 | ||
76e3520e | 544 | STATIC char * |
15f0808c | 545 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 546 | { |
463ee0b2 LW |
547 | register char *s; |
548 | STRLEN len; | |
549 | ||
550 | start = skipspace(start); | |
551 | s = start; | |
a0d0e21e LW |
552 | if (isIDFIRST(*s) || |
553 | (allow_pack && *s == ':') || | |
15f0808c | 554 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 555 | { |
3280af22 NIS |
556 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
557 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
558 | return start; |
559 | if (token == METHOD) { | |
560 | s = skipspace(s); | |
561 | if (*s == '(') | |
3280af22 | 562 | PL_expect = XTERM; |
463ee0b2 | 563 | else { |
3280af22 | 564 | PL_expect = XOPERATOR; |
463ee0b2 LW |
565 | force_next(')'); |
566 | force_next('('); | |
567 | } | |
79072805 | 568 | } |
3280af22 NIS |
569 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
570 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
571 | force_next(token); |
572 | } | |
573 | return s; | |
574 | } | |
575 | ||
76e3520e | 576 | STATIC void |
8ac85365 | 577 | force_ident(register char *s, int kind) |
79072805 LW |
578 | { |
579 | if (s && *s) { | |
11343788 | 580 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 581 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 582 | force_next(WORD); |
748a9306 | 583 | if (kind) { |
e858de61 | 584 | dTHR; /* just for in_eval */ |
11343788 | 585 | o->op_private = OPpCONST_ENTERED; |
55497cff | 586 | /* XXX see note in pp_entereval() for why we forgo typo |
587 | warnings if the symbol must be introduced in an eval. | |
588 | GSAR 96-10-12 */ | |
3280af22 | 589 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
590 | kind == '$' ? SVt_PV : |
591 | kind == '@' ? SVt_PVAV : | |
592 | kind == '%' ? SVt_PVHV : | |
593 | SVt_PVGV | |
594 | ); | |
748a9306 | 595 | } |
79072805 LW |
596 | } |
597 | } | |
598 | ||
76e3520e | 599 | STATIC char * |
8ac85365 | 600 | force_version(char *s) |
89bfa8cd | 601 | { |
602 | OP *version = Nullop; | |
603 | ||
604 | s = skipspace(s); | |
605 | ||
606 | /* default VERSION number -- GBARR */ | |
607 | ||
608 | if(isDIGIT(*s)) { | |
609 | char *d; | |
610 | int c; | |
55497cff | 611 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 612 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
613 | s = scan_num(s); | |
614 | /* real VERSION number -- GBARR */ | |
615 | version = yylval.opval; | |
616 | } | |
617 | } | |
618 | ||
619 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 620 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 621 | force_next(WORD); |
622 | ||
623 | return (s); | |
624 | } | |
625 | ||
76e3520e GS |
626 | STATIC SV * |
627 | tokeq(SV *sv) | |
79072805 LW |
628 | { |
629 | register char *s; | |
630 | register char *send; | |
631 | register char *d; | |
b3ac6de7 IZ |
632 | STRLEN len = 0; |
633 | SV *pv = sv; | |
79072805 LW |
634 | |
635 | if (!SvLEN(sv)) | |
b3ac6de7 | 636 | goto finish; |
79072805 | 637 | |
a0d0e21e | 638 | s = SvPV_force(sv, len); |
748a9306 | 639 | if (SvIVX(sv) == -1) |
b3ac6de7 | 640 | goto finish; |
463ee0b2 | 641 | send = s + len; |
79072805 LW |
642 | while (s < send && *s != '\\') |
643 | s++; | |
644 | if (s == send) | |
b3ac6de7 | 645 | goto finish; |
79072805 | 646 | d = s; |
3280af22 | 647 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 648 | pv = sv_2mortal(newSVpv(SvPVX(pv), len)); |
79072805 LW |
649 | while (s < send) { |
650 | if (*s == '\\') { | |
a0d0e21e | 651 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
652 | s++; /* all that, just for this */ |
653 | } | |
654 | *d++ = *s++; | |
655 | } | |
656 | *d = '\0'; | |
463ee0b2 | 657 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 658 | finish: |
3280af22 | 659 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 660 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
661 | return sv; |
662 | } | |
663 | ||
76e3520e | 664 | STATIC I32 |
8ac85365 | 665 | sublex_start(void) |
79072805 LW |
666 | { |
667 | register I32 op_type = yylval.ival; | |
79072805 LW |
668 | |
669 | if (op_type == OP_NULL) { | |
3280af22 NIS |
670 | yylval.opval = PL_lex_op; |
671 | PL_lex_op = Nullop; | |
79072805 LW |
672 | return THING; |
673 | } | |
674 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 675 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
676 | |
677 | if (SvTYPE(sv) == SVt_PVIV) { | |
678 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
679 | STRLEN len; | |
680 | char *p; | |
681 | SV *nsv; | |
682 | ||
683 | p = SvPV(sv, len); | |
684 | nsv = newSVpv(p, len); | |
685 | SvREFCNT_dec(sv); | |
686 | sv = nsv; | |
687 | } | |
688 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 689 | PL_lex_stuff = Nullsv; |
79072805 LW |
690 | return THING; |
691 | } | |
692 | ||
3280af22 NIS |
693 | PL_sublex_info.super_state = PL_lex_state; |
694 | PL_sublex_info.sub_inwhat = op_type; | |
695 | PL_sublex_info.sub_op = PL_lex_op; | |
696 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 697 | |
3280af22 NIS |
698 | PL_expect = XTERM; |
699 | if (PL_lex_op) { | |
700 | yylval.opval = PL_lex_op; | |
701 | PL_lex_op = Nullop; | |
55497cff | 702 | return PMFUNC; |
703 | } | |
704 | else | |
705 | return FUNC; | |
706 | } | |
707 | ||
76e3520e | 708 | STATIC I32 |
8ac85365 | 709 | sublex_push(void) |
55497cff | 710 | { |
0f15f207 | 711 | dTHR; |
f46d017c | 712 | ENTER; |
55497cff | 713 | |
3280af22 NIS |
714 | PL_lex_state = PL_sublex_info.super_state; |
715 | SAVEI32(PL_lex_dojoin); | |
716 | SAVEI32(PL_lex_brackets); | |
717 | SAVEI32(PL_lex_fakebrack); | |
718 | SAVEI32(PL_lex_casemods); | |
719 | SAVEI32(PL_lex_starts); | |
720 | SAVEI32(PL_lex_state); | |
721 | SAVESPTR(PL_lex_inpat); | |
722 | SAVEI32(PL_lex_inwhat); | |
723 | SAVEI16(PL_curcop->cop_line); | |
724 | SAVEPPTR(PL_bufptr); | |
725 | SAVEPPTR(PL_oldbufptr); | |
726 | SAVEPPTR(PL_oldoldbufptr); | |
727 | SAVEPPTR(PL_linestart); | |
728 | SAVESPTR(PL_linestr); | |
729 | SAVEPPTR(PL_lex_brackstack); | |
730 | SAVEPPTR(PL_lex_casestack); | |
731 | ||
732 | PL_linestr = PL_lex_stuff; | |
733 | PL_lex_stuff = Nullsv; | |
734 | ||
735 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
736 | PL_bufend += SvCUR(PL_linestr); | |
737 | SAVEFREESV(PL_linestr); | |
738 | ||
739 | PL_lex_dojoin = FALSE; | |
740 | PL_lex_brackets = 0; | |
741 | PL_lex_fakebrack = 0; | |
742 | New(899, PL_lex_brackstack, 120, char); | |
743 | New(899, PL_lex_casestack, 12, char); | |
744 | SAVEFREEPV(PL_lex_brackstack); | |
745 | SAVEFREEPV(PL_lex_casestack); | |
746 | PL_lex_casemods = 0; | |
747 | *PL_lex_casestack = '\0'; | |
748 | PL_lex_starts = 0; | |
749 | PL_lex_state = LEX_INTERPCONCAT; | |
750 | PL_curcop->cop_line = PL_multi_start; | |
751 | ||
752 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
753 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
754 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 755 | else |
3280af22 | 756 | PL_lex_inpat = Nullop; |
79072805 | 757 | |
55497cff | 758 | return '('; |
79072805 LW |
759 | } |
760 | ||
76e3520e | 761 | STATIC I32 |
8ac85365 | 762 | sublex_done(void) |
79072805 | 763 | { |
3280af22 NIS |
764 | if (!PL_lex_starts++) { |
765 | PL_expect = XOPERATOR; | |
93a17b20 | 766 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0)); |
79072805 LW |
767 | return THING; |
768 | } | |
769 | ||
3280af22 NIS |
770 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
771 | PL_lex_state = LEX_INTERPCASEMOD; | |
79072805 LW |
772 | return yylex(); |
773 | } | |
774 | ||
79072805 | 775 | /* Is there a right-hand side to take care of? */ |
3280af22 NIS |
776 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
777 | PL_linestr = PL_lex_repl; | |
778 | PL_lex_inpat = 0; | |
779 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
780 | PL_bufend += SvCUR(PL_linestr); | |
781 | SAVEFREESV(PL_linestr); | |
782 | PL_lex_dojoin = FALSE; | |
783 | PL_lex_brackets = 0; | |
784 | PL_lex_fakebrack = 0; | |
785 | PL_lex_casemods = 0; | |
786 | *PL_lex_casestack = '\0'; | |
787 | PL_lex_starts = 0; | |
788 | if (SvCOMPILED(PL_lex_repl)) { | |
789 | PL_lex_state = LEX_INTERPNORMAL; | |
790 | PL_lex_starts++; | |
79072805 LW |
791 | } |
792 | else | |
3280af22 NIS |
793 | PL_lex_state = LEX_INTERPCONCAT; |
794 | PL_lex_repl = Nullsv; | |
79072805 | 795 | return ','; |
ffed7fef LW |
796 | } |
797 | else { | |
f46d017c | 798 | LEAVE; |
3280af22 NIS |
799 | PL_bufend = SvPVX(PL_linestr); |
800 | PL_bufend += SvCUR(PL_linestr); | |
801 | PL_expect = XOPERATOR; | |
79072805 | 802 | return ')'; |
ffed7fef LW |
803 | } |
804 | } | |
805 | ||
02aa26ce NT |
806 | /* |
807 | scan_const | |
808 | ||
809 | Extracts a pattern, double-quoted string, or transliteration. This | |
810 | is terrifying code. | |
811 | ||
3280af22 NIS |
812 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
813 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
814 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
815 | ||
9b599b2a GS |
816 | Returns a pointer to the character scanned up to. Iff this is |
817 | advanced from the start pointer supplied (ie if anything was | |
818 | successfully parsed), will leave an OP for the substring scanned | |
819 | in yylval. Caller must intuit reason for not parsing further | |
820 | by looking at the next characters herself. | |
821 | ||
02aa26ce NT |
822 | In patterns: |
823 | backslashes: | |
824 | double-quoted style: \r and \n | |
825 | regexp special ones: \D \s | |
826 | constants: \x3 | |
827 | backrefs: \1 (deprecated in substitution replacements) | |
828 | case and quoting: \U \Q \E | |
829 | stops on @ and $, but not for $ as tail anchor | |
830 | ||
831 | In transliterations: | |
832 | characters are VERY literal, except for - not at the start or end | |
833 | of the string, which indicates a range. scan_const expands the | |
834 | range to the full set of intermediate characters. | |
835 | ||
836 | In double-quoted strings: | |
837 | backslashes: | |
838 | double-quoted style: \r and \n | |
839 | constants: \x3 | |
840 | backrefs: \1 (deprecated) | |
841 | case and quoting: \U \Q \E | |
842 | stops on @ and $ | |
843 | ||
844 | scan_const does *not* construct ops to handle interpolated strings. | |
845 | It stops processing as soon as it finds an embedded $ or @ variable | |
846 | and leaves it to the caller to work out what's going on. | |
847 | ||
848 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
849 | ||
850 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
851 | it's a tail anchor if $ is the last thing in the string, or if it's | |
852 | followed by one of ")| \n\t" | |
853 | ||
854 | \1 (backreferences) are turned into $1 | |
855 | ||
856 | The structure of the code is | |
857 | while (there's a character to process) { | |
858 | handle transliteration ranges | |
859 | skip regexp comments | |
860 | skip # initiated comments in //x patterns | |
861 | check for embedded @foo | |
862 | check for embedded scalars | |
863 | if (backslash) { | |
864 | leave intact backslashes from leave (below) | |
865 | deprecate \1 in strings and sub replacements | |
866 | handle string-changing backslashes \l \U \Q \E, etc. | |
867 | switch (what was escaped) { | |
868 | handle - in a transliteration (becomes a literal -) | |
869 | handle \132 octal characters | |
870 | handle 0x15 hex characters | |
871 | handle \cV (control V) | |
872 | handle printf backslashes (\f, \r, \n, etc) | |
873 | } (end switch) | |
874 | } (end if backslash) | |
875 | } (end while character to read) | |
876 | ||
877 | */ | |
878 | ||
76e3520e | 879 | STATIC char * |
8ac85365 | 880 | scan_const(char *start) |
79072805 | 881 | { |
3280af22 | 882 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
883 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
884 | register char *s = start; /* start of the constant */ | |
885 | register char *d = SvPVX(sv); /* destination for copies */ | |
886 | bool dorange = FALSE; /* are we in a translit range? */ | |
887 | I32 len; /* ? */ | |
a0ed51b3 LW |
888 | I32 utf = PL_lex_inwhat == OP_TRANS |
889 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
890 | : UTF; | |
891 | I32 thisutf = PL_lex_inwhat == OP_TRANS | |
892 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
893 | : UTF; | |
02aa26ce | 894 | |
9b599b2a | 895 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 896 | char *leaveit = |
3280af22 | 897 | PL_lex_inpat |
a0ed51b3 | 898 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 899 | : ""; |
79072805 LW |
900 | |
901 | while (s < send || dorange) { | |
02aa26ce | 902 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 903 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 904 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 905 | if (dorange) { |
02aa26ce | 906 | I32 i; /* current expanded character */ |
8ada0baa | 907 | I32 min; /* first character in range */ |
02aa26ce NT |
908 | I32 max; /* last character in range */ |
909 | ||
910 | i = d - SvPVX(sv); /* remember current offset */ | |
911 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
912 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
913 | d -= 2; /* eat the first char and the - */ | |
914 | ||
8ada0baa JH |
915 | min = (U8)*d; /* first char in range */ |
916 | max = (U8)d[1]; /* last char in range */ | |
917 | ||
918 | #ifndef ASCIIish | |
919 | if ((isLOWER(min) && isLOWER(max)) || | |
920 | (isUPPER(min) && isUPPER(max))) { | |
921 | if (isLOWER(min)) { | |
922 | for (i = min; i <= max; i++) | |
923 | if (isLOWER(i)) | |
924 | *d++ = i; | |
925 | } else { | |
926 | for (i = min; i <= max; i++) | |
927 | if (isUPPER(i)) | |
928 | *d++ = i; | |
929 | } | |
930 | } | |
931 | else | |
932 | #endif | |
933 | for (i = min; i <= max; i++) | |
934 | *d++ = i; | |
02aa26ce NT |
935 | |
936 | /* mark the range as done, and continue */ | |
79072805 LW |
937 | dorange = FALSE; |
938 | continue; | |
939 | } | |
02aa26ce NT |
940 | |
941 | /* range begins (ignore - as first or last char) */ | |
79072805 | 942 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 943 | if (utf) { |
a176fa2a | 944 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
945 | s++; |
946 | continue; | |
947 | } | |
79072805 LW |
948 | dorange = TRUE; |
949 | s++; | |
950 | } | |
951 | } | |
02aa26ce NT |
952 | |
953 | /* if we get here, we're not doing a transliteration */ | |
954 | ||
0f5d15d6 IZ |
955 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
956 | except for the last char, which will be done separately. */ | |
3280af22 | 957 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
958 | if (s[2] == '#') { |
959 | while (s < send && *s != ')') | |
960 | *d++ = *s++; | |
0f5d15d6 IZ |
961 | } else if (s[2] == '{' |
962 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 963 | I32 count = 1; |
0f5d15d6 | 964 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
965 | char c; |
966 | ||
d9f97599 GS |
967 | while (count && (c = *regparse)) { |
968 | if (c == '\\' && regparse[1]) | |
969 | regparse++; | |
cc6b7395 IZ |
970 | else if (c == '{') |
971 | count++; | |
972 | else if (c == '}') | |
973 | count--; | |
d9f97599 | 974 | regparse++; |
cc6b7395 | 975 | } |
0f5d15d6 | 976 | if (*regparse != ')') |
cc6b7395 | 977 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
0f5d15d6 | 978 | while (s < regparse) |
cc6b7395 IZ |
979 | *d++ = *s++; |
980 | } | |
748a9306 | 981 | } |
02aa26ce NT |
982 | |
983 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
984 | else if (*s == '#' && PL_lex_inpat && |
985 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
986 | while (s+1 < send && *s != '\n') |
987 | *d++ = *s++; | |
988 | } | |
02aa26ce NT |
989 | |
990 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
a0d0e21e | 991 | else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1]))) |
79072805 | 992 | break; |
02aa26ce NT |
993 | |
994 | /* check for embedded scalars. only stop if we're sure it's a | |
995 | variable. | |
996 | */ | |
79072805 | 997 | else if (*s == '$') { |
3280af22 | 998 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 999 | break; |
c277df42 | 1000 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1001 | break; /* in regexp, $ might be tail anchor */ |
1002 | } | |
02aa26ce | 1003 | |
a0ed51b3 LW |
1004 | /* (now in tr/// code again) */ |
1005 | ||
d008e5eb GS |
1006 | if (*s & 0x80 && thisutf) { |
1007 | dTHR; /* only for ckWARN */ | |
1008 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1009 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1010 | if (len) { |
1011 | while (len--) | |
1012 | *d++ = *s++; | |
1013 | continue; | |
1014 | } | |
a0ed51b3 LW |
1015 | } |
1016 | } | |
1017 | ||
02aa26ce | 1018 | /* backslashes */ |
79072805 LW |
1019 | if (*s == '\\' && s+1 < send) { |
1020 | s++; | |
02aa26ce NT |
1021 | |
1022 | /* some backslashes we leave behind */ | |
72aaf631 | 1023 | if (*s && strchr(leaveit, *s)) { |
79072805 LW |
1024 | *d++ = '\\'; |
1025 | *d++ = *s++; | |
1026 | continue; | |
1027 | } | |
02aa26ce NT |
1028 | |
1029 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1030 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1031 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1032 | { |
d008e5eb | 1033 | dTHR; /* only for ckWARN */ |
599cee73 PM |
1034 | if (ckWARN(WARN_SYNTAX)) |
1035 | warner(WARN_SYNTAX, "\\%c better written as $%c", *s, *s); | |
79072805 LW |
1036 | *--s = '$'; |
1037 | break; | |
1038 | } | |
02aa26ce NT |
1039 | |
1040 | /* string-change backslash escapes */ | |
3280af22 | 1041 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1042 | --s; |
1043 | break; | |
1044 | } | |
02aa26ce NT |
1045 | |
1046 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1047 | switch (*s) { |
02aa26ce NT |
1048 | |
1049 | /* quoted - in transliterations */ | |
79072805 | 1050 | case '-': |
3280af22 | 1051 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1052 | *d++ = *s++; |
1053 | continue; | |
1054 | } | |
1055 | /* FALL THROUGH */ | |
02aa26ce | 1056 | /* default action is to copy the quoted character */ |
79072805 LW |
1057 | default: |
1058 | *d++ = *s++; | |
1059 | continue; | |
02aa26ce NT |
1060 | |
1061 | /* \132 indicates an octal constant */ | |
79072805 LW |
1062 | case '0': case '1': case '2': case '3': |
1063 | case '4': case '5': case '6': case '7': | |
1064 | *d++ = scan_oct(s, 3, &len); | |
1065 | s += len; | |
1066 | continue; | |
02aa26ce NT |
1067 | |
1068 | /* \x24 indicates a hex constant */ | |
79072805 | 1069 | case 'x': |
a0ed51b3 LW |
1070 | ++s; |
1071 | if (*s == '{') { | |
1072 | char* e = strchr(s, '}'); | |
1073 | ||
1074 | if (!e) | |
1075 | yyerror("Missing right brace on \\x{}"); | |
d008e5eb GS |
1076 | if (!utf) { |
1077 | dTHR; | |
1078 | if (ckWARN(WARN_UTF8)) | |
1079 | warner(WARN_UTF8, | |
1080 | "Use of \\x{} without utf8 declaration"); | |
1081 | } | |
a0ed51b3 | 1082 | /* note: utf always shorter than hex */ |
dfe13c55 GS |
1083 | d = (char*)uv_to_utf8((U8*)d, |
1084 | scan_hex(s + 1, e - s - 1, &len)); | |
a0ed51b3 LW |
1085 | s = e + 1; |
1086 | ||
1087 | } | |
1088 | else { | |
1089 | UV uv = (UV)scan_hex(s, 2, &len); | |
1090 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1091 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1092 | { | |
dfe13c55 | 1093 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1094 | } |
1095 | else { | |
d008e5eb GS |
1096 | if (uv >= 127 && UTF) { |
1097 | dTHR; | |
1098 | if (ckWARN(WARN_UTF8)) | |
1099 | warner(WARN_UTF8, | |
1100 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", | |
1101 | len,s,len,s); | |
1102 | } | |
a0ed51b3 LW |
1103 | *d++ = (char)uv; |
1104 | } | |
1105 | s += len; | |
1106 | } | |
79072805 | 1107 | continue; |
02aa26ce NT |
1108 | |
1109 | /* \c is a control character */ | |
79072805 LW |
1110 | case 'c': |
1111 | s++; | |
9d116dd7 JH |
1112 | #ifdef EBCDIC |
1113 | *d = *s++; | |
1114 | if (isLOWER(*d)) | |
1115 | *d = toUPPER(*d); | |
1116 | *d++ = toCTRL(*d); | |
1117 | #else | |
bbce6d69 | 1118 | len = *s++; |
1119 | *d++ = toCTRL(len); | |
9d116dd7 | 1120 | #endif |
79072805 | 1121 | continue; |
02aa26ce NT |
1122 | |
1123 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1124 | case 'b': |
1125 | *d++ = '\b'; | |
1126 | break; | |
1127 | case 'n': | |
1128 | *d++ = '\n'; | |
1129 | break; | |
1130 | case 'r': | |
1131 | *d++ = '\r'; | |
1132 | break; | |
1133 | case 'f': | |
1134 | *d++ = '\f'; | |
1135 | break; | |
1136 | case 't': | |
1137 | *d++ = '\t'; | |
1138 | break; | |
1139 | case 'e': | |
1140 | *d++ = '\033'; | |
1141 | break; | |
1142 | case 'a': | |
1143 | *d++ = '\007'; | |
1144 | break; | |
02aa26ce NT |
1145 | } /* end switch */ |
1146 | ||
79072805 LW |
1147 | s++; |
1148 | continue; | |
02aa26ce NT |
1149 | } /* end if (backslash) */ |
1150 | ||
79072805 | 1151 | *d++ = *s++; |
02aa26ce NT |
1152 | } /* while loop to process each character */ |
1153 | ||
1154 | /* terminate the string and set up the sv */ | |
79072805 | 1155 | *d = '\0'; |
463ee0b2 | 1156 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1157 | SvPOK_on(sv); |
1158 | ||
02aa26ce | 1159 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1160 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1161 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1162 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1163 | } |
02aa26ce | 1164 | |
9b599b2a | 1165 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1166 | if (s > PL_bufptr) { |
1167 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1168 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1169 | sv, Nullsv, |
3280af22 | 1170 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1171 | ? "tr" |
3280af22 | 1172 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1173 | ? "s" |
1174 | : "qq"))); | |
79072805 | 1175 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1176 | } else |
8990e307 | 1177 | SvREFCNT_dec(sv); |
79072805 LW |
1178 | return s; |
1179 | } | |
1180 | ||
1181 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
76e3520e | 1182 | STATIC int |
8ac85365 | 1183 | intuit_more(register char *s) |
79072805 | 1184 | { |
3280af22 | 1185 | if (PL_lex_brackets) |
79072805 LW |
1186 | return TRUE; |
1187 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1188 | return TRUE; | |
1189 | if (*s != '{' && *s != '[') | |
1190 | return FALSE; | |
3280af22 | 1191 | if (!PL_lex_inpat) |
79072805 LW |
1192 | return TRUE; |
1193 | ||
1194 | /* In a pattern, so maybe we have {n,m}. */ | |
1195 | if (*s == '{') { | |
1196 | s++; | |
1197 | if (!isDIGIT(*s)) | |
1198 | return TRUE; | |
1199 | while (isDIGIT(*s)) | |
1200 | s++; | |
1201 | if (*s == ',') | |
1202 | s++; | |
1203 | while (isDIGIT(*s)) | |
1204 | s++; | |
1205 | if (*s == '}') | |
1206 | return FALSE; | |
1207 | return TRUE; | |
1208 | ||
1209 | } | |
1210 | ||
1211 | /* On the other hand, maybe we have a character class */ | |
1212 | ||
1213 | s++; | |
1214 | if (*s == ']' || *s == '^') | |
1215 | return FALSE; | |
1216 | else { | |
1217 | int weight = 2; /* let's weigh the evidence */ | |
1218 | char seen[256]; | |
f27ffc4a | 1219 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1220 | char *send = strchr(s,']'); |
3280af22 | 1221 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1222 | |
1223 | if (!send) /* has to be an expression */ | |
1224 | return TRUE; | |
1225 | ||
1226 | Zero(seen,256,char); | |
1227 | if (*s == '$') | |
1228 | weight -= 3; | |
1229 | else if (isDIGIT(*s)) { | |
1230 | if (s[1] != ']') { | |
1231 | if (isDIGIT(s[1]) && s[2] == ']') | |
1232 | weight -= 10; | |
1233 | } | |
1234 | else | |
1235 | weight -= 100; | |
1236 | } | |
1237 | for (; s < send; s++) { | |
1238 | last_un_char = un_char; | |
1239 | un_char = (unsigned char)*s; | |
1240 | switch (*s) { | |
1241 | case '@': | |
1242 | case '&': | |
1243 | case '$': | |
1244 | weight -= seen[un_char] * 10; | |
1245 | if (isALNUM(s[1])) { | |
8903cb82 | 1246 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1247 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1248 | weight -= 100; |
1249 | else | |
1250 | weight -= 10; | |
1251 | } | |
1252 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1253 | strchr("[#!%*<>()-=",s[1])) { |
1254 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1255 | weight -= 10; |
1256 | else | |
1257 | weight -= 1; | |
1258 | } | |
1259 | break; | |
1260 | case '\\': | |
1261 | un_char = 254; | |
1262 | if (s[1]) { | |
93a17b20 | 1263 | if (strchr("wds]",s[1])) |
79072805 LW |
1264 | weight += 100; |
1265 | else if (seen['\''] || seen['"']) | |
1266 | weight += 1; | |
93a17b20 | 1267 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1268 | weight += 40; |
1269 | else if (isDIGIT(s[1])) { | |
1270 | weight += 40; | |
1271 | while (s[1] && isDIGIT(s[1])) | |
1272 | s++; | |
1273 | } | |
1274 | } | |
1275 | else | |
1276 | weight += 100; | |
1277 | break; | |
1278 | case '-': | |
1279 | if (s[1] == '\\') | |
1280 | weight += 50; | |
93a17b20 | 1281 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1282 | weight += 30; |
93a17b20 | 1283 | if (strchr("zZ79~",s[1])) |
79072805 | 1284 | weight += 30; |
f27ffc4a GS |
1285 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1286 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1287 | break; |
1288 | default: | |
93a17b20 | 1289 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1290 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1291 | char *d = tmpbuf; | |
1292 | while (isALPHA(*s)) | |
1293 | *d++ = *s++; | |
1294 | *d = '\0'; | |
1295 | if (keyword(tmpbuf, d - tmpbuf)) | |
1296 | weight -= 150; | |
1297 | } | |
1298 | if (un_char == last_un_char + 1) | |
1299 | weight += 5; | |
1300 | weight -= seen[un_char]; | |
1301 | break; | |
1302 | } | |
1303 | seen[un_char]++; | |
1304 | } | |
1305 | if (weight >= 0) /* probably a character class */ | |
1306 | return FALSE; | |
1307 | } | |
1308 | ||
1309 | return TRUE; | |
1310 | } | |
ffed7fef | 1311 | |
76e3520e | 1312 | STATIC int |
8ac85365 | 1313 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1314 | { |
1315 | char *s = start + (*start == '$'); | |
3280af22 | 1316 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1317 | STRLEN len; |
1318 | GV* indirgv; | |
1319 | ||
1320 | if (gv) { | |
b6c543e3 | 1321 | CV *cv; |
a0d0e21e LW |
1322 | if (GvIO(gv)) |
1323 | return 0; | |
b6c543e3 IZ |
1324 | if ((cv = GvCVu(gv))) { |
1325 | char *proto = SvPVX(cv); | |
1326 | if (proto) { | |
1327 | if (*proto == ';') | |
1328 | proto++; | |
1329 | if (*proto == '*') | |
1330 | return 0; | |
1331 | } | |
1332 | } else | |
a0d0e21e LW |
1333 | gv = 0; |
1334 | } | |
8903cb82 | 1335 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e | 1336 | if (*start == '$') { |
3280af22 | 1337 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1338 | return 0; |
1339 | s = skipspace(s); | |
3280af22 NIS |
1340 | PL_bufptr = start; |
1341 | PL_expect = XREF; | |
a0d0e21e LW |
1342 | return *s == '(' ? FUNCMETH : METHOD; |
1343 | } | |
1344 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1345 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1346 | len -= 2; | |
1347 | tmpbuf[len] = '\0'; | |
1348 | goto bare_package; | |
1349 | } | |
1350 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1351 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1352 | return 0; |
1353 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1354 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1355 | s = skipspace(s); |
3280af22 | 1356 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1357 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1358 | bare_package: |
3280af22 | 1359 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
c3e0f903 | 1360 | newSVpv(tmpbuf,0)); |
3280af22 NIS |
1361 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1362 | PL_expect = XTERM; | |
a0d0e21e | 1363 | force_next(WORD); |
3280af22 | 1364 | PL_bufptr = s; |
a0d0e21e LW |
1365 | return *s == '(' ? FUNCMETH : METHOD; |
1366 | } | |
1367 | } | |
1368 | return 0; | |
1369 | } | |
1370 | ||
76e3520e | 1371 | STATIC char* |
8ac85365 | 1372 | incl_perldb(void) |
a0d0e21e | 1373 | { |
3280af22 | 1374 | if (PL_perldb) { |
76e3520e | 1375 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1376 | |
1377 | if (pdb) | |
1378 | return pdb; | |
61bb5906 | 1379 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1380 | return "BEGIN { require 'perl5db.pl' }"; |
1381 | } | |
1382 | return ""; | |
1383 | } | |
1384 | ||
1385 | ||
16d20bd9 AD |
1386 | /* Encoded script support. filter_add() effectively inserts a |
1387 | * 'pre-processing' function into the current source input stream. | |
1388 | * Note that the filter function only applies to the current source file | |
1389 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1390 | * | |
1391 | * The datasv parameter (which may be NULL) can be used to pass | |
1392 | * private data to this instance of the filter. The filter function | |
1393 | * can recover the SV using the FILTER_DATA macro and use it to | |
1394 | * store private buffers and state information. | |
1395 | * | |
1396 | * The supplied datasv parameter is upgraded to a PVIO type | |
1397 | * and the IoDIRP field is used to store the function pointer. | |
1398 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1399 | * private use must be set using malloc'd pointers. | |
1400 | */ | |
1401 | static int filter_debug = 0; | |
1402 | ||
1403 | SV * | |
8ac85365 | 1404 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1405 | { |
1406 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
1407 | filter_debug = atoi((char*)datasv); | |
1408 | return NULL; | |
1409 | } | |
3280af22 NIS |
1410 | if (!PL_rsfp_filters) |
1411 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1412 | if (!datasv) |
8c52afec | 1413 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1414 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1415 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1416 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
1417 | if (filter_debug) | |
3280af22 NIS |
1418 | warn("filter_add func %p (%s)", funcp, SvPV(datasv,PL_na)); |
1419 | av_unshift(PL_rsfp_filters, 1); | |
1420 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1421 | return(datasv); |
1422 | } | |
1423 | ||
1424 | ||
1425 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1426 | void |
8ac85365 | 1427 | filter_del(filter_t funcp) |
16d20bd9 AD |
1428 | { |
1429 | if (filter_debug) | |
ff0cee69 | 1430 | warn("filter_del func %p", funcp); |
3280af22 | 1431 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1432 | return; |
1433 | /* if filter is on top of stack (usual case) just pop it off */ | |
677ca527 | 1434 | if (IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) == (DIR*)funcp){ |
3280af22 | 1435 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1436 | |
16d20bd9 AD |
1437 | return; |
1438 | } | |
1439 | /* we need to search for the correct entry and clear it */ | |
1440 | die("filter_del can only delete in reverse order (currently)"); | |
1441 | } | |
1442 | ||
1443 | ||
1444 | /* Invoke the n'th filter function for the current rsfp. */ | |
1445 | I32 | |
8ac85365 NIS |
1446 | filter_read(int idx, SV *buf_sv, int maxlen) |
1447 | ||
1448 | ||
1449 | /* 0 = read one text line */ | |
a0d0e21e | 1450 | { |
16d20bd9 AD |
1451 | filter_t funcp; |
1452 | SV *datasv = NULL; | |
e50aee73 | 1453 | |
3280af22 | 1454 | if (!PL_rsfp_filters) |
16d20bd9 | 1455 | return -1; |
3280af22 | 1456 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1457 | /* Provide a default input filter to make life easy. */ |
1458 | /* Note that we append to the line. This is handy. */ | |
16d20bd9 AD |
1459 | if (filter_debug) |
1460 | warn("filter_read %d: from rsfp\n", idx); | |
1461 | if (maxlen) { | |
1462 | /* Want a block */ | |
1463 | int len ; | |
1464 | int old_len = SvCUR(buf_sv) ; | |
1465 | ||
1466 | /* ensure buf_sv is large enough */ | |
1467 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1468 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1469 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1470 | return -1; /* error */ |
1471 | else | |
1472 | return 0 ; /* end of file */ | |
1473 | } | |
16d20bd9 AD |
1474 | SvCUR_set(buf_sv, old_len + len) ; |
1475 | } else { | |
1476 | /* Want a line */ | |
3280af22 NIS |
1477 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1478 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1479 | return -1; /* error */ |
1480 | else | |
1481 | return 0 ; /* end of file */ | |
1482 | } | |
16d20bd9 AD |
1483 | } |
1484 | return SvCUR(buf_sv); | |
1485 | } | |
1486 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1487 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
16d20bd9 AD |
1488 | if (filter_debug) |
1489 | warn("filter_read %d: skipped (filter deleted)\n", idx); | |
1490 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1491 | } | |
1492 | /* Get function pointer hidden within datasv */ | |
1493 | funcp = (filter_t)IoDIRP(datasv); | |
1494 | if (filter_debug) | |
ff0cee69 | 1495 | warn("filter_read %d: via function %p (%s)\n", |
3280af22 | 1496 | idx, funcp, SvPV(datasv,PL_na)); |
16d20bd9 AD |
1497 | /* Call function. The function is expected to */ |
1498 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1499 | /* Return: <0:error, =0:eof, >0:not eof */ |
1d583055 | 1500 | return (*funcp)(PERL_OBJECT_THIS_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1501 | } |
1502 | ||
76e3520e GS |
1503 | STATIC char * |
1504 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) | |
16d20bd9 | 1505 | { |
a868473f | 1506 | #ifdef WIN32FILTER |
3280af22 | 1507 | if (!PL_rsfp_filters) { |
a868473f NIS |
1508 | filter_add(win32_textfilter,NULL); |
1509 | } | |
1510 | #endif | |
3280af22 | 1511 | if (PL_rsfp_filters) { |
16d20bd9 | 1512 | |
55497cff | 1513 | if (!append) |
1514 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1515 | if (FILTER_READ(0, sv, 0) > 0) |
1516 | return ( SvPVX(sv) ) ; | |
1517 | else | |
1518 | return Nullch ; | |
1519 | } | |
9d116dd7 | 1520 | else |
fd049845 | 1521 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1522 | } |
1523 | ||
1524 | ||
748a9306 LW |
1525 | #ifdef DEBUGGING |
1526 | static char* exp_name[] = | |
a0d0e21e | 1527 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1528 | #endif |
463ee0b2 | 1529 | |
71be2cbc | 1530 | EXT int yychar; /* last token */ |
463ee0b2 | 1531 | |
02aa26ce NT |
1532 | /* |
1533 | yylex | |
1534 | ||
1535 | Works out what to call the token just pulled out of the input | |
1536 | stream. The yacc parser takes care of taking the ops we return and | |
1537 | stitching them into a tree. | |
1538 | ||
1539 | Returns: | |
1540 | PRIVATEREF | |
1541 | ||
1542 | Structure: | |
1543 | if read an identifier | |
1544 | if we're in a my declaration | |
1545 | croak if they tried to say my($foo::bar) | |
1546 | build the ops for a my() declaration | |
1547 | if it's an access to a my() variable | |
1548 | are we in a sort block? | |
1549 | croak if my($a); $a <=> $b | |
1550 | build ops for access to a my() variable | |
1551 | if in a dq string, and they've said @foo and we can't find @foo | |
1552 | croak | |
1553 | build ops for a bareword | |
1554 | if we already built the token before, use it. | |
1555 | */ | |
1556 | ||
2f3197b3 | 1557 | int |
8ac85365 | 1558 | yylex(void) |
378cc40b | 1559 | { |
11343788 | 1560 | dTHR; |
79072805 | 1561 | register char *s; |
378cc40b | 1562 | register char *d; |
79072805 | 1563 | register I32 tmp; |
463ee0b2 | 1564 | STRLEN len; |
161b471a NIS |
1565 | GV *gv = Nullgv; |
1566 | GV **gvp = 0; | |
a687059c | 1567 | |
02aa26ce | 1568 | /* check if there's an identifier for us to look at */ |
3280af22 | 1569 | if (PL_pending_ident) { |
02aa26ce | 1570 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1571 | char pit = PL_pending_ident; |
1572 | PL_pending_ident = 0; | |
bbce6d69 | 1573 | |
02aa26ce NT |
1574 | /* if we're in a my(), we can't allow dynamics here. |
1575 | $foo'bar has already been turned into $foo::bar, so | |
1576 | just check for colons. | |
1577 | ||
1578 | if it's a legal name, the OP is a PADANY. | |
1579 | */ | |
3280af22 NIS |
1580 | if (PL_in_my) { |
1581 | if (strchr(PL_tokenbuf,':')) | |
1582 | croak(no_myglob,PL_tokenbuf); | |
02aa26ce | 1583 | |
bbce6d69 | 1584 | yylval.opval = newOP(OP_PADANY, 0); |
3280af22 | 1585 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); |
bbce6d69 | 1586 | return PRIVATEREF; |
1587 | } | |
1588 | ||
02aa26ce NT |
1589 | /* |
1590 | build the ops for accesses to a my() variable. | |
1591 | ||
1592 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1593 | then used in a comparison. This catches most, but not | |
1594 | all cases. For instance, it catches | |
1595 | sort { my($a); $a <=> $b } | |
1596 | but not | |
1597 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1598 | (although why you'd do that is anyone's guess). | |
1599 | */ | |
1600 | ||
3280af22 | 1601 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1602 | #ifdef USE_THREADS |
54b9620d | 1603 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1604 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1605 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1606 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1607 | { |
2faa37cc | 1608 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1609 | yylval.opval->op_targ = tmp; |
1610 | return PRIVATEREF; | |
1611 | } | |
1612 | #endif /* USE_THREADS */ | |
3280af22 | 1613 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
02aa26ce | 1614 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
1615 | if (PL_last_lop_op == OP_SORT && |
1616 | PL_tokenbuf[0] == '$' && | |
1617 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
1618 | && !PL_tokenbuf[2]) | |
bbce6d69 | 1619 | { |
3280af22 NIS |
1620 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
1621 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
1622 | d++) |
1623 | { | |
1624 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1625 | croak("Can't use \"my %s\" in sort comparison", | |
3280af22 | 1626 | PL_tokenbuf); |
a863c7d1 | 1627 | } |
bbce6d69 | 1628 | } |
1629 | } | |
bbce6d69 | 1630 | |
a863c7d1 MB |
1631 | yylval.opval = newOP(OP_PADANY, 0); |
1632 | yylval.opval->op_targ = tmp; | |
1633 | return PRIVATEREF; | |
1634 | } | |
bbce6d69 | 1635 | } |
1636 | ||
02aa26ce NT |
1637 | /* |
1638 | Whine if they've said @foo in a doublequoted string, | |
1639 | and @foo isn't a variable we can find in the symbol | |
1640 | table. | |
1641 | */ | |
3280af22 NIS |
1642 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
1643 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
1644 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
46fc3d4c | 1645 | yyerror(form("In string, %s now must be written as \\%s", |
3280af22 | 1646 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 1647 | } |
1648 | ||
02aa26ce | 1649 | /* build ops for a bareword */ |
3280af22 | 1650 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 1651 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
1652 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
1653 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
1654 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 1655 | : SVt_PVHV)); |
1656 | return WORD; | |
1657 | } | |
1658 | ||
02aa26ce NT |
1659 | /* no identifier pending identification */ |
1660 | ||
3280af22 | 1661 | switch (PL_lex_state) { |
79072805 LW |
1662 | #ifdef COMMENTARY |
1663 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1664 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1665 | break; | |
1666 | #endif | |
1667 | ||
02aa26ce | 1668 | /* when we're already built the next token, just pull it out the queue */ |
79072805 | 1669 | case LEX_KNOWNEXT: |
3280af22 NIS |
1670 | PL_nexttoke--; |
1671 | yylval = PL_nextval[PL_nexttoke]; | |
1672 | if (!PL_nexttoke) { | |
1673 | PL_lex_state = PL_lex_defer; | |
1674 | PL_expect = PL_lex_expect; | |
1675 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 1676 | } |
3280af22 | 1677 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 1678 | |
02aa26ce | 1679 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 1680 | when we get here, PL_bufptr is at the \ |
02aa26ce | 1681 | */ |
79072805 LW |
1682 | case LEX_INTERPCASEMOD: |
1683 | #ifdef DEBUGGING | |
3280af22 | 1684 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
463ee0b2 | 1685 | croak("panic: INTERPCASEMOD"); |
79072805 | 1686 | #endif |
02aa26ce | 1687 | /* handle \E or end of string */ |
3280af22 | 1688 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 1689 | char oldmod; |
02aa26ce NT |
1690 | |
1691 | /* if at a \E */ | |
3280af22 NIS |
1692 | if (PL_lex_casemods) { |
1693 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
1694 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 1695 | |
3280af22 NIS |
1696 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
1697 | PL_bufptr += 2; | |
1698 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 1699 | } |
79072805 LW |
1700 | return ')'; |
1701 | } | |
3280af22 NIS |
1702 | if (PL_bufptr != PL_bufend) |
1703 | PL_bufptr += 2; | |
1704 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1705 | return yylex(); |
1706 | } | |
1707 | else { | |
3280af22 | 1708 | s = PL_bufptr + 1; |
79072805 LW |
1709 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
1710 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 1711 | if (strchr("LU", *s) && |
3280af22 | 1712 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 1713 | { |
3280af22 | 1714 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
1715 | return ')'; |
1716 | } | |
3280af22 NIS |
1717 | if (PL_lex_casemods > 10) { |
1718 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
1719 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 1720 | SAVEFREEPV(newlb); |
3280af22 | 1721 | PL_lex_casestack = newlb; |
a0d0e21e LW |
1722 | } |
1723 | } | |
3280af22 NIS |
1724 | PL_lex_casestack[PL_lex_casemods++] = *s; |
1725 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
1726 | PL_lex_state = LEX_INTERPCONCAT; | |
1727 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
1728 | force_next('('); |
1729 | if (*s == 'l') | |
3280af22 | 1730 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 1731 | else if (*s == 'u') |
3280af22 | 1732 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 1733 | else if (*s == 'L') |
3280af22 | 1734 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 1735 | else if (*s == 'U') |
3280af22 | 1736 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 1737 | else if (*s == 'Q') |
3280af22 | 1738 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 1739 | else |
463ee0b2 | 1740 | croak("panic: yylex"); |
3280af22 | 1741 | PL_bufptr = s + 1; |
79072805 | 1742 | force_next(FUNC); |
3280af22 NIS |
1743 | if (PL_lex_starts) { |
1744 | s = PL_bufptr; | |
1745 | PL_lex_starts = 0; | |
79072805 LW |
1746 | Aop(OP_CONCAT); |
1747 | } | |
1748 | else | |
1749 | return yylex(); | |
1750 | } | |
1751 | ||
55497cff | 1752 | case LEX_INTERPPUSH: |
1753 | return sublex_push(); | |
1754 | ||
79072805 | 1755 | case LEX_INTERPSTART: |
3280af22 | 1756 | if (PL_bufptr == PL_bufend) |
79072805 | 1757 | return sublex_done(); |
3280af22 NIS |
1758 | PL_expect = XTERM; |
1759 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
1760 | PL_lex_state = LEX_INTERPNORMAL; | |
1761 | if (PL_lex_dojoin) { | |
1762 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 1763 | force_next(','); |
554b3eca | 1764 | #ifdef USE_THREADS |
533c011a NIS |
1765 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
1766 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
1767 | force_next(PRIVATEREF); |
1768 | #else | |
a0d0e21e | 1769 | force_ident("\"", '$'); |
554b3eca | 1770 | #endif /* USE_THREADS */ |
3280af22 | 1771 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1772 | force_next('$'); |
3280af22 | 1773 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1774 | force_next('('); |
3280af22 | 1775 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
1776 | force_next(FUNC); |
1777 | } | |
3280af22 NIS |
1778 | if (PL_lex_starts++) { |
1779 | s = PL_bufptr; | |
79072805 LW |
1780 | Aop(OP_CONCAT); |
1781 | } | |
68dc0745 | 1782 | return yylex(); |
79072805 LW |
1783 | |
1784 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
1785 | if (intuit_more(PL_bufptr)) { |
1786 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
1787 | break; |
1788 | } | |
1789 | /* FALL THROUGH */ | |
1790 | ||
1791 | case LEX_INTERPEND: | |
3280af22 NIS |
1792 | if (PL_lex_dojoin) { |
1793 | PL_lex_dojoin = FALSE; | |
1794 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1795 | return ')'; |
1796 | } | |
1797 | /* FALLTHROUGH */ | |
1798 | case LEX_INTERPCONCAT: | |
1799 | #ifdef DEBUGGING | |
3280af22 | 1800 | if (PL_lex_brackets) |
463ee0b2 | 1801 | croak("panic: INTERPCONCAT"); |
79072805 | 1802 | #endif |
3280af22 | 1803 | if (PL_bufptr == PL_bufend) |
79072805 LW |
1804 | return sublex_done(); |
1805 | ||
3280af22 NIS |
1806 | if (SvIVX(PL_linestr) == '\'') { |
1807 | SV *sv = newSVsv(PL_linestr); | |
1808 | if (!PL_lex_inpat) | |
76e3520e | 1809 | sv = tokeq(sv); |
3280af22 | 1810 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 1811 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 1812 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 1813 | s = PL_bufend; |
79072805 LW |
1814 | } |
1815 | else { | |
3280af22 | 1816 | s = scan_const(PL_bufptr); |
79072805 | 1817 | if (*s == '\\') |
3280af22 | 1818 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 1819 | else |
3280af22 | 1820 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
1821 | } |
1822 | ||
3280af22 NIS |
1823 | if (s != PL_bufptr) { |
1824 | PL_nextval[PL_nexttoke] = yylval; | |
1825 | PL_expect = XTERM; | |
79072805 | 1826 | force_next(THING); |
3280af22 | 1827 | if (PL_lex_starts++) |
79072805 LW |
1828 | Aop(OP_CONCAT); |
1829 | else { | |
3280af22 | 1830 | PL_bufptr = s; |
79072805 LW |
1831 | return yylex(); |
1832 | } | |
1833 | } | |
1834 | ||
1835 | return yylex(); | |
a0d0e21e | 1836 | case LEX_FORMLINE: |
3280af22 NIS |
1837 | PL_lex_state = LEX_NORMAL; |
1838 | s = scan_formline(PL_bufptr); | |
1839 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
1840 | goto rightbracket; |
1841 | OPERATOR(';'); | |
79072805 LW |
1842 | } |
1843 | ||
3280af22 NIS |
1844 | s = PL_bufptr; |
1845 | PL_oldoldbufptr = PL_oldbufptr; | |
1846 | PL_oldbufptr = s; | |
79072805 | 1847 | DEBUG_p( { |
3280af22 | 1848 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[PL_expect], s); |
79072805 | 1849 | } ) |
463ee0b2 LW |
1850 | |
1851 | retry: | |
378cc40b LW |
1852 | switch (*s) { |
1853 | default: | |
a0ed51b3 LW |
1854 | /* |
1855 | * Note: we try to be careful never to call the isXXX_utf8() functions unless we're | |
1856 | * pretty sure we've seen the beginning of a UTF-8 character (that is, the two high | |
1857 | * bits are set). Otherwise we risk loading in the heavy-duty SWASHINIT and SWASHGET | |
1858 | * routines unnecessarily. You will see this not just here but throughout this file. | |
1859 | */ | |
1860 | if (UTF && (*s & 0xc0) == 0x80) { | |
dfe13c55 | 1861 | if (isIDFIRST_utf8((U8*)s)) |
a0ed51b3 LW |
1862 | goto keylookup; |
1863 | } | |
1864 | croak("Unrecognized character \\x%02X", *s & 255); | |
e929a76b LW |
1865 | case 4: |
1866 | case 26: | |
1867 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1868 | case 0: |
3280af22 NIS |
1869 | if (!PL_rsfp) { |
1870 | PL_last_uni = 0; | |
1871 | PL_last_lop = 0; | |
1872 | if (PL_lex_brackets) | |
463ee0b2 | 1873 | yyerror("Missing right bracket"); |
79072805 | 1874 | TOKEN(0); |
463ee0b2 | 1875 | } |
3280af22 | 1876 | if (s++ < PL_bufend) |
a687059c | 1877 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
1878 | PL_last_uni = 0; |
1879 | PL_last_lop = 0; | |
1880 | if (!PL_in_eval && !PL_preambled) { | |
1881 | PL_preambled = TRUE; | |
1882 | sv_setpv(PL_linestr,incl_perldb()); | |
1883 | if (SvCUR(PL_linestr)) | |
1884 | sv_catpv(PL_linestr,";"); | |
1885 | if (PL_preambleav){ | |
1886 | while(AvFILLp(PL_preambleav) >= 0) { | |
1887 | SV *tmpsv = av_shift(PL_preambleav); | |
1888 | sv_catsv(PL_linestr, tmpsv); | |
1889 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 1890 | sv_free(tmpsv); |
1891 | } | |
3280af22 NIS |
1892 | sv_free((SV*)PL_preambleav); |
1893 | PL_preambleav = NULL; | |
91b7def8 | 1894 | } |
3280af22 NIS |
1895 | if (PL_minus_n || PL_minus_p) { |
1896 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
1897 | if (PL_minus_l) | |
1898 | sv_catpv(PL_linestr,"chomp;"); | |
1899 | if (PL_minus_a) { | |
8fd239a7 CS |
1900 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
1901 | if (gv) | |
1902 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
1903 | if (PL_minus_F) { |
1904 | if (strchr("/'\"", *PL_splitstr) | |
1905 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
1906 | sv_catpvf(PL_linestr, "@F=split(%s);", PL_splitstr); | |
54310121 | 1907 | else { |
1908 | char delim; | |
1909 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 1910 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 1911 | delim = *s; |
3280af22 | 1912 | sv_catpvf(PL_linestr, "@F=split(%s%c", |
46fc3d4c | 1913 | "q" + (delim == '\''), delim); |
3280af22 | 1914 | for (s = PL_splitstr; *s; s++) { |
54310121 | 1915 | if (*s == '\\') |
3280af22 NIS |
1916 | sv_catpvn(PL_linestr, "\\", 1); |
1917 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 1918 | } |
3280af22 | 1919 | sv_catpvf(PL_linestr, "%c);", delim); |
54310121 | 1920 | } |
2304df62 AD |
1921 | } |
1922 | else | |
3280af22 | 1923 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 1924 | } |
79072805 | 1925 | } |
3280af22 NIS |
1926 | sv_catpv(PL_linestr, "\n"); |
1927 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1928 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1929 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
1930 | SV *sv = NEWSV(85,0); |
1931 | ||
1932 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
1933 | sv_setsv(sv,PL_linestr); |
1934 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a0d0e21e | 1935 | } |
79072805 | 1936 | goto retry; |
a687059c | 1937 | } |
e929a76b | 1938 | do { |
3280af22 | 1939 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 1940 | fake_eof: |
3280af22 NIS |
1941 | if (PL_rsfp) { |
1942 | if (PL_preprocess && !PL_in_eval) | |
1943 | (void)PerlProc_pclose(PL_rsfp); | |
1944 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
1945 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 1946 | else |
3280af22 NIS |
1947 | (void)PerlIO_close(PL_rsfp); |
1948 | PL_rsfp = Nullfp; | |
4a9ae47a | 1949 | PL_doextract = FALSE; |
395c3793 | 1950 | } |
3280af22 NIS |
1951 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
1952 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
1953 | sv_catpv(PL_linestr,";}"); | |
1954 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1955 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1956 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
1957 | goto retry; |
1958 | } | |
3280af22 NIS |
1959 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
1960 | sv_setpv(PL_linestr,""); | |
79072805 | 1961 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 1962 | } |
3280af22 | 1963 | if (PL_doextract) { |
a0d0e21e | 1964 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 1965 | PL_doextract = FALSE; |
a0d0e21e LW |
1966 | |
1967 | /* Incest with pod. */ | |
1968 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
1969 | sv_setpv(PL_linestr, ""); |
1970 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1971 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1972 | PL_doextract = FALSE; | |
a0d0e21e LW |
1973 | } |
1974 | } | |
463ee0b2 | 1975 | incline(s); |
3280af22 NIS |
1976 | } while (PL_doextract); |
1977 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
1978 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 1979 | SV *sv = NEWSV(85,0); |
a687059c | 1980 | |
93a17b20 | 1981 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
1982 | sv_setsv(sv,PL_linestr); |
1983 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a687059c | 1984 | } |
3280af22 NIS |
1985 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1986 | if (PL_curcop->cop_line == 1) { | |
1987 | while (s < PL_bufend && isSPACE(*s)) | |
79072805 | 1988 | s++; |
a0d0e21e | 1989 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 1990 | s++; |
44a8e56a | 1991 | d = Nullch; |
3280af22 | 1992 | if (!PL_in_eval) { |
44a8e56a | 1993 | if (*s == '#' && *(s+1) == '!') |
1994 | d = s + 2; | |
1995 | #ifdef ALTERNATE_SHEBANG | |
1996 | else { | |
1997 | static char as[] = ALTERNATE_SHEBANG; | |
1998 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
1999 | d = s + (sizeof(as) - 1); | |
2000 | } | |
2001 | #endif /* ALTERNATE_SHEBANG */ | |
2002 | } | |
2003 | if (d) { | |
b8378b72 | 2004 | char *ipath; |
774d564b | 2005 | char *ipathend; |
b8378b72 | 2006 | |
774d564b | 2007 | while (isSPACE(*d)) |
b8378b72 CS |
2008 | d++; |
2009 | ipath = d; | |
774d564b | 2010 | while (*d && !isSPACE(*d)) |
2011 | d++; | |
2012 | ipathend = d; | |
2013 | ||
2014 | #ifdef ARG_ZERO_IS_SCRIPT | |
2015 | if (ipathend > ipath) { | |
2016 | /* | |
2017 | * HP-UX (at least) sets argv[0] to the script name, | |
2018 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2019 | * at least, set argv[0] to the basename of the Perl | |
2020 | * interpreter. So, having found "#!", we'll set it right. | |
2021 | */ | |
2022 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2023 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
6b88bc9c | 2024 | if (sv_eq(x, GvSV(PL_curcop->cop_filegv))) { |
774d564b | 2025 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2026 | SvSETMAGIC(x); |
2027 | } | |
774d564b | 2028 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2029 | } |
774d564b | 2030 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2031 | |
2032 | /* | |
2033 | * Look for options. | |
2034 | */ | |
748a9306 LW |
2035 | d = instr(s,"perl -"); |
2036 | if (!d) | |
2037 | d = instr(s,"perl"); | |
44a8e56a | 2038 | #ifdef ALTERNATE_SHEBANG |
2039 | /* | |
2040 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2041 | * character that can be part of a Perl expression, then if | |
2042 | * we see it but not "perl", we're probably looking at the | |
2043 | * start of Perl code, not a request to hand off to some | |
2044 | * other interpreter. Similarly, if "perl" is there, but | |
2045 | * not in the first 'word' of the line, we assume the line | |
2046 | * contains the start of the Perl program. | |
44a8e56a | 2047 | */ |
2048 | if (d && *s != '#') { | |
774d564b | 2049 | char *c = ipath; |
44a8e56a | 2050 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2051 | c++; | |
2052 | if (c < d) | |
2053 | d = Nullch; /* "perl" not in first word; ignore */ | |
2054 | else | |
2055 | *s = '#'; /* Don't try to parse shebang line */ | |
2056 | } | |
774d564b | 2057 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2058 | if (!d && |
44a8e56a | 2059 | *s == '#' && |
774d564b | 2060 | ipathend > ipath && |
3280af22 | 2061 | !PL_minus_c && |
748a9306 | 2062 | !instr(s,"indir") && |
3280af22 | 2063 | instr(PL_origargv[0],"perl")) |
748a9306 | 2064 | { |
9f68db38 | 2065 | char **newargv; |
9f68db38 | 2066 | |
774d564b | 2067 | *ipathend = '\0'; |
2068 | s = ipathend + 1; | |
3280af22 | 2069 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2070 | s++; |
3280af22 NIS |
2071 | if (s < PL_bufend) { |
2072 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2073 | newargv[1] = s; |
3280af22 | 2074 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2075 | s++; |
2076 | *s = '\0'; | |
3280af22 | 2077 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2078 | } |
2079 | else | |
3280af22 | 2080 | newargv = PL_origargv; |
774d564b | 2081 | newargv[0] = ipath; |
2082 | execv(ipath, newargv); | |
2083 | croak("Can't exec %s", ipath); | |
9f68db38 | 2084 | } |
748a9306 | 2085 | if (d) { |
3280af22 NIS |
2086 | U32 oldpdb = PL_perldb; |
2087 | bool oldn = PL_minus_n; | |
2088 | bool oldp = PL_minus_p; | |
748a9306 LW |
2089 | |
2090 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2091 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2092 | |
2093 | if (*d++ == '-') { | |
8cc95fdb | 2094 | do { |
2095 | if (*d == 'M' || *d == 'm') { | |
2096 | char *m = d; | |
2097 | while (*d && !isSPACE(*d)) d++; | |
2098 | croak("Too late for \"-%.*s\" option", | |
2099 | (int)(d - m), m); | |
2100 | } | |
2101 | d = moreswitches(d); | |
2102 | } while (d); | |
84902520 | 2103 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2104 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2105 | /* if we have already added "LINE: while (<>) {", |
2106 | we must not do it again */ | |
748a9306 | 2107 | { |
3280af22 NIS |
2108 | sv_setpv(PL_linestr, ""); |
2109 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2110 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2111 | PL_preambled = FALSE; | |
84902520 | 2112 | if (PERLDB_LINE) |
3280af22 | 2113 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2114 | goto retry; |
2115 | } | |
a0d0e21e | 2116 | } |
79072805 | 2117 | } |
9f68db38 | 2118 | } |
79072805 | 2119 | } |
3280af22 NIS |
2120 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2121 | PL_bufptr = s; | |
2122 | PL_lex_state = LEX_FORMLINE; | |
a0d0e21e | 2123 | return yylex(); |
ae986130 | 2124 | } |
378cc40b | 2125 | goto retry; |
4fdae800 | 2126 | case '\r': |
6a27c188 | 2127 | #ifdef PERL_STRICT_CR |
54310121 | 2128 | warn("Illegal character \\%03o (carriage return)", '\r'); |
2129 | croak( | |
2130 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 2131 | #endif |
4fdae800 | 2132 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2133 | s++; |
2134 | goto retry; | |
378cc40b | 2135 | case '#': |
e929a76b | 2136 | case '\n': |
3280af22 NIS |
2137 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2138 | d = PL_bufend; | |
a687059c | 2139 | while (s < d && *s != '\n') |
378cc40b | 2140 | s++; |
0f85fab0 | 2141 | if (s < d) |
378cc40b | 2142 | s++; |
463ee0b2 | 2143 | incline(s); |
3280af22 NIS |
2144 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2145 | PL_bufptr = s; | |
2146 | PL_lex_state = LEX_FORMLINE; | |
a0d0e21e | 2147 | return yylex(); |
a687059c | 2148 | } |
378cc40b | 2149 | } |
a687059c | 2150 | else { |
378cc40b | 2151 | *s = '\0'; |
3280af22 | 2152 | PL_bufend = s; |
a687059c | 2153 | } |
378cc40b LW |
2154 | goto retry; |
2155 | case '-': | |
79072805 | 2156 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2157 | s++; |
3280af22 | 2158 | PL_bufptr = s; |
748a9306 LW |
2159 | tmp = *s++; |
2160 | ||
3280af22 | 2161 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2162 | s++; |
2163 | ||
2164 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2165 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2166 | OPERATOR('-'); /* unary minus */ |
2167 | } | |
3280af22 NIS |
2168 | PL_last_uni = PL_oldbufptr; |
2169 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2170 | switch (tmp) { |
79072805 LW |
2171 | case 'r': FTST(OP_FTEREAD); |
2172 | case 'w': FTST(OP_FTEWRITE); | |
2173 | case 'x': FTST(OP_FTEEXEC); | |
2174 | case 'o': FTST(OP_FTEOWNED); | |
2175 | case 'R': FTST(OP_FTRREAD); | |
2176 | case 'W': FTST(OP_FTRWRITE); | |
2177 | case 'X': FTST(OP_FTREXEC); | |
2178 | case 'O': FTST(OP_FTROWNED); | |
2179 | case 'e': FTST(OP_FTIS); | |
2180 | case 'z': FTST(OP_FTZERO); | |
2181 | case 's': FTST(OP_FTSIZE); | |
2182 | case 'f': FTST(OP_FTFILE); | |
2183 | case 'd': FTST(OP_FTDIR); | |
2184 | case 'l': FTST(OP_FTLINK); | |
2185 | case 'p': FTST(OP_FTPIPE); | |
2186 | case 'S': FTST(OP_FTSOCK); | |
2187 | case 'u': FTST(OP_FTSUID); | |
2188 | case 'g': FTST(OP_FTSGID); | |
2189 | case 'k': FTST(OP_FTSVTX); | |
2190 | case 'b': FTST(OP_FTBLK); | |
2191 | case 'c': FTST(OP_FTCHR); | |
2192 | case 't': FTST(OP_FTTTY); | |
2193 | case 'T': FTST(OP_FTTEXT); | |
2194 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2195 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2196 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2197 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2198 | default: |
ff0cee69 | 2199 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2200 | break; |
2201 | } | |
2202 | } | |
a687059c LW |
2203 | tmp = *s++; |
2204 | if (*s == tmp) { | |
2205 | s++; | |
3280af22 | 2206 | if (PL_expect == XOPERATOR) |
79072805 LW |
2207 | TERM(POSTDEC); |
2208 | else | |
2209 | OPERATOR(PREDEC); | |
2210 | } | |
2211 | else if (*s == '>') { | |
2212 | s++; | |
2213 | s = skipspace(s); | |
2214 | if (isIDFIRST(*s)) { | |
a0d0e21e | 2215 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2216 | TOKEN(ARROW); |
79072805 | 2217 | } |
748a9306 LW |
2218 | else if (*s == '$') |
2219 | OPERATOR(ARROW); | |
463ee0b2 | 2220 | else |
748a9306 | 2221 | TERM(ARROW); |
a687059c | 2222 | } |
3280af22 | 2223 | if (PL_expect == XOPERATOR) |
79072805 LW |
2224 | Aop(OP_SUBTRACT); |
2225 | else { | |
3280af22 | 2226 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2227 | check_uni(); |
79072805 | 2228 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2229 | } |
79072805 | 2230 | |
378cc40b | 2231 | case '+': |
a687059c LW |
2232 | tmp = *s++; |
2233 | if (*s == tmp) { | |
378cc40b | 2234 | s++; |
3280af22 | 2235 | if (PL_expect == XOPERATOR) |
79072805 LW |
2236 | TERM(POSTINC); |
2237 | else | |
2238 | OPERATOR(PREINC); | |
378cc40b | 2239 | } |
3280af22 | 2240 | if (PL_expect == XOPERATOR) |
79072805 LW |
2241 | Aop(OP_ADD); |
2242 | else { | |
3280af22 | 2243 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2244 | check_uni(); |
a687059c | 2245 | OPERATOR('+'); |
2f3197b3 | 2246 | } |
a687059c | 2247 | |
378cc40b | 2248 | case '*': |
3280af22 NIS |
2249 | if (PL_expect != XOPERATOR) { |
2250 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2251 | PL_expect = XOPERATOR; | |
2252 | force_ident(PL_tokenbuf, '*'); | |
2253 | if (!*PL_tokenbuf) | |
a0d0e21e | 2254 | PREREF('*'); |
79072805 | 2255 | TERM('*'); |
a687059c | 2256 | } |
79072805 LW |
2257 | s++; |
2258 | if (*s == '*') { | |
a687059c | 2259 | s++; |
79072805 | 2260 | PWop(OP_POW); |
a687059c | 2261 | } |
79072805 LW |
2262 | Mop(OP_MULTIPLY); |
2263 | ||
378cc40b | 2264 | case '%': |
3280af22 | 2265 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2266 | ++s; |
2267 | Mop(OP_MODULO); | |
a687059c | 2268 | } |
3280af22 NIS |
2269 | PL_tokenbuf[0] = '%'; |
2270 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2271 | if (!PL_tokenbuf[1]) { | |
2272 | if (s == PL_bufend) | |
bbce6d69 | 2273 | yyerror("Final % should be \\% or %name"); |
2274 | PREREF('%'); | |
a687059c | 2275 | } |
3280af22 | 2276 | PL_pending_ident = '%'; |
bbce6d69 | 2277 | TERM('%'); |
a687059c | 2278 | |
378cc40b | 2279 | case '^': |
79072805 | 2280 | s++; |
a0d0e21e | 2281 | BOop(OP_BIT_XOR); |
79072805 | 2282 | case '[': |
3280af22 | 2283 | PL_lex_brackets++; |
79072805 | 2284 | /* FALL THROUGH */ |
378cc40b | 2285 | case '~': |
378cc40b | 2286 | case ',': |
378cc40b LW |
2287 | tmp = *s++; |
2288 | OPERATOR(tmp); | |
a0d0e21e LW |
2289 | case ':': |
2290 | if (s[1] == ':') { | |
2291 | len = 0; | |
2292 | goto just_a_word; | |
2293 | } | |
2294 | s++; | |
2295 | OPERATOR(':'); | |
8990e307 LW |
2296 | case '(': |
2297 | s++; | |
3280af22 NIS |
2298 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2299 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2300 | else |
3280af22 | 2301 | PL_expect = XTERM; |
a0d0e21e | 2302 | TOKEN('('); |
378cc40b | 2303 | case ';': |
3280af22 NIS |
2304 | if (PL_curcop->cop_line < PL_copline) |
2305 | PL_copline = PL_curcop->cop_line; | |
378cc40b LW |
2306 | tmp = *s++; |
2307 | OPERATOR(tmp); | |
2308 | case ')': | |
378cc40b | 2309 | tmp = *s++; |
16d20bd9 AD |
2310 | s = skipspace(s); |
2311 | if (*s == '{') | |
2312 | PREBLOCK(tmp); | |
378cc40b | 2313 | TERM(tmp); |
79072805 LW |
2314 | case ']': |
2315 | s++; | |
3280af22 | 2316 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2317 | yyerror("Unmatched right bracket"); |
2318 | else | |
3280af22 NIS |
2319 | --PL_lex_brackets; |
2320 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2321 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2322 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2323 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2324 | } |
2325 | } | |
4633a7c4 | 2326 | TERM(']'); |
79072805 LW |
2327 | case '{': |
2328 | leftbracket: | |
79072805 | 2329 | s++; |
3280af22 NIS |
2330 | if (PL_lex_brackets > 100) { |
2331 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2332 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2333 | SAVEFREEPV(newlb); |
3280af22 | 2334 | PL_lex_brackstack = newlb; |
8990e307 LW |
2335 | } |
2336 | } | |
3280af22 | 2337 | switch (PL_expect) { |
a0d0e21e | 2338 | case XTERM: |
3280af22 | 2339 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2340 | s--; |
2341 | PRETERMBLOCK(DO); | |
2342 | } | |
3280af22 NIS |
2343 | if (PL_oldoldbufptr == PL_last_lop) |
2344 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2345 | else |
3280af22 | 2346 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2347 | OPERATOR(HASHBRACK); |
a0d0e21e | 2348 | case XOPERATOR: |
3280af22 | 2349 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2350 | s++; |
44a8e56a | 2351 | d = s; |
3280af22 NIS |
2352 | PL_tokenbuf[0] = '\0'; |
2353 | if (d < PL_bufend && *d == '-') { | |
2354 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2355 | d++; |
3280af22 | 2356 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2357 | d++; |
2358 | } | |
3280af22 NIS |
2359 | if (d < PL_bufend && isIDFIRST(*d)) { |
2360 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2361 | FALSE, &len); |
3280af22 | 2362 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2363 | d++; |
2364 | if (*d == '}') { | |
3280af22 | 2365 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2366 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2367 | if (minus) | |
2368 | force_next('-'); | |
748a9306 LW |
2369 | } |
2370 | } | |
2371 | /* FALL THROUGH */ | |
2372 | case XBLOCK: | |
3280af22 NIS |
2373 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2374 | PL_expect = XSTATE; | |
a0d0e21e LW |
2375 | break; |
2376 | case XTERMBLOCK: | |
3280af22 NIS |
2377 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2378 | PL_expect = XSTATE; | |
a0d0e21e LW |
2379 | break; |
2380 | default: { | |
2381 | char *t; | |
3280af22 NIS |
2382 | if (PL_oldoldbufptr == PL_last_lop) |
2383 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2384 | else |
3280af22 | 2385 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2386 | s = skipspace(s); |
09ecc4b6 | 2387 | if (*s == '}') |
a0d0e21e | 2388 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2389 | /* This hack serves to disambiguate a pair of curlies |
2390 | * as being a block or an anon hash. Normally, expectation | |
2391 | * determines that, but in cases where we're not in a | |
2392 | * position to expect anything in particular (like inside | |
2393 | * eval"") we have to resolve the ambiguity. This code | |
2394 | * covers the case where the first term in the curlies is a | |
2395 | * quoted string. Most other cases need to be explicitly | |
2396 | * disambiguated by prepending a `+' before the opening | |
2397 | * curly in order to force resolution as an anon hash. | |
2398 | * | |
2399 | * XXX should probably propagate the outer expectation | |
2400 | * into eval"" to rely less on this hack, but that could | |
2401 | * potentially break current behavior of eval"". | |
2402 | * GSAR 97-07-21 | |
2403 | */ | |
2404 | t = s; | |
2405 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2406 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2407 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2408 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2409 | t++; | |
2410 | t++; | |
a0d0e21e | 2411 | } |
b8a4b1be | 2412 | else if (*s == 'q') { |
3280af22 | 2413 | if (++t < PL_bufend |
b8a4b1be | 2414 | && (!isALNUM(*t) |
3280af22 | 2415 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2416 | && !isALNUM(*t)))) { |
2417 | char *tmps; | |
2418 | char open, close, term; | |
2419 | I32 brackets = 1; | |
2420 | ||
3280af22 | 2421 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2422 | t++; |
2423 | term = *t; | |
2424 | open = term; | |
2425 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2426 | term = tmps[5]; | |
2427 | close = term; | |
2428 | if (open == close) | |
3280af22 NIS |
2429 | for (t++; t < PL_bufend; t++) { |
2430 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2431 | t++; |
6d07e5e9 | 2432 | else if (*t == open) |
b8a4b1be GS |
2433 | break; |
2434 | } | |
2435 | else | |
3280af22 NIS |
2436 | for (t++; t < PL_bufend; t++) { |
2437 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2438 | t++; |
6d07e5e9 | 2439 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2440 | break; |
2441 | else if (*t == open) | |
2442 | brackets++; | |
2443 | } | |
2444 | } | |
2445 | t++; | |
a0d0e21e | 2446 | } |
b8a4b1be | 2447 | else if (isALPHA(*s)) { |
3280af22 | 2448 | for (t++; t < PL_bufend && isALNUM(*t); t++) ; |
a0d0e21e | 2449 | } |
3280af22 | 2450 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2451 | t++; |
b8a4b1be GS |
2452 | /* if comma follows first term, call it an anon hash */ |
2453 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2454 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2455 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2456 | OPERATOR(HASHBRACK); |
3280af22 NIS |
2457 | if (PL_expect == XREF) |
2458 | PL_expect = XTERM; | |
a0d0e21e | 2459 | else { |
3280af22 NIS |
2460 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2461 | PL_expect = XSTATE; | |
a0d0e21e | 2462 | } |
8990e307 | 2463 | } |
a0d0e21e | 2464 | break; |
463ee0b2 | 2465 | } |
3280af22 | 2466 | yylval.ival = PL_curcop->cop_line; |
79072805 | 2467 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2468 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2469 | TOKEN('{'); |
378cc40b | 2470 | case '}': |
79072805 LW |
2471 | rightbracket: |
2472 | s++; | |
3280af22 | 2473 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2474 | yyerror("Unmatched right bracket"); |
2475 | else | |
3280af22 NIS |
2476 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2477 | if (PL_lex_brackets < PL_lex_formbrack) | |
2478 | PL_lex_formbrack = 0; | |
2479 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2480 | if (PL_lex_brackets == 0) { | |
2481 | if (PL_lex_fakebrack) { | |
2482 | PL_lex_state = LEX_INTERPEND; | |
2483 | PL_bufptr = s; | |
79072805 LW |
2484 | return yylex(); /* ignore fake brackets */ |
2485 | } | |
fa83b5b6 | 2486 | if (*s == '-' && s[1] == '>') |
3280af22 | 2487 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2488 | else if (*s != '[' && *s != '{') |
3280af22 | 2489 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2490 | } |
2491 | } | |
3280af22 NIS |
2492 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2493 | PL_bufptr = s; | |
2494 | PL_lex_fakebrack = 0; | |
748a9306 LW |
2495 | return yylex(); /* ignore fake brackets */ |
2496 | } | |
79072805 LW |
2497 | force_next('}'); |
2498 | TOKEN(';'); | |
378cc40b LW |
2499 | case '&': |
2500 | s++; | |
2501 | tmp = *s++; | |
2502 | if (tmp == '&') | |
a0d0e21e | 2503 | AOPERATOR(ANDAND); |
378cc40b | 2504 | s--; |
3280af22 | 2505 | if (PL_expect == XOPERATOR) { |
599cee73 | 2506 | if (ckWARN(WARN_SEMICOLON) && isALPHA(*s) && PL_bufptr == PL_linestart) { |
3280af22 | 2507 | PL_curcop->cop_line--; |
599cee73 | 2508 | warner(WARN_SEMICOLON, warn_nosemi); |
3280af22 | 2509 | PL_curcop->cop_line++; |
463ee0b2 | 2510 | } |
79072805 | 2511 | BAop(OP_BIT_AND); |
463ee0b2 | 2512 | } |
79072805 | 2513 | |
3280af22 NIS |
2514 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
2515 | if (*PL_tokenbuf) { | |
2516 | PL_expect = XOPERATOR; | |
2517 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 2518 | } |
79072805 LW |
2519 | else |
2520 | PREREF('&'); | |
c07a80fd | 2521 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2522 | TERM('&'); |
2523 | ||
378cc40b LW |
2524 | case '|': |
2525 | s++; | |
2526 | tmp = *s++; | |
2527 | if (tmp == '|') | |
a0d0e21e | 2528 | AOPERATOR(OROR); |
378cc40b | 2529 | s--; |
79072805 | 2530 | BOop(OP_BIT_OR); |
378cc40b LW |
2531 | case '=': |
2532 | s++; | |
2533 | tmp = *s++; | |
2534 | if (tmp == '=') | |
79072805 LW |
2535 | Eop(OP_EQ); |
2536 | if (tmp == '>') | |
2537 | OPERATOR(','); | |
378cc40b | 2538 | if (tmp == '~') |
79072805 | 2539 | PMop(OP_MATCH); |
599cee73 PM |
2540 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
2541 | warner(WARN_SYNTAX, "Reversed %c= operator",(int)tmp); | |
378cc40b | 2542 | s--; |
3280af22 NIS |
2543 | if (PL_expect == XSTATE && isALPHA(tmp) && |
2544 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 2545 | { |
3280af22 NIS |
2546 | if (PL_in_eval && !PL_rsfp) { |
2547 | d = PL_bufend; | |
a5f75d66 AD |
2548 | while (s < d) { |
2549 | if (*s++ == '\n') { | |
2550 | incline(s); | |
2551 | if (strnEQ(s,"=cut",4)) { | |
2552 | s = strchr(s,'\n'); | |
2553 | if (s) | |
2554 | s++; | |
2555 | else | |
2556 | s = d; | |
2557 | incline(s); | |
2558 | goto retry; | |
2559 | } | |
2560 | } | |
2561 | } | |
2562 | goto retry; | |
2563 | } | |
3280af22 NIS |
2564 | s = PL_bufend; |
2565 | PL_doextract = TRUE; | |
a0d0e21e LW |
2566 | goto retry; |
2567 | } | |
3280af22 | 2568 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 2569 | char *t; |
51882d45 | 2570 | #ifdef PERL_STRICT_CR |
a0d0e21e | 2571 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
2572 | #else |
2573 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
2574 | #endif | |
a0d0e21e LW |
2575 | if (*t == '\n' || *t == '#') { |
2576 | s--; | |
3280af22 | 2577 | PL_expect = XBLOCK; |
a0d0e21e LW |
2578 | goto leftbracket; |
2579 | } | |
79072805 | 2580 | } |
a0d0e21e LW |
2581 | yylval.ival = 0; |
2582 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2583 | case '!': |
2584 | s++; | |
2585 | tmp = *s++; | |
2586 | if (tmp == '=') | |
79072805 | 2587 | Eop(OP_NE); |
378cc40b | 2588 | if (tmp == '~') |
79072805 | 2589 | PMop(OP_NOT); |
378cc40b LW |
2590 | s--; |
2591 | OPERATOR('!'); | |
2592 | case '<': | |
3280af22 | 2593 | if (PL_expect != XOPERATOR) { |
93a17b20 | 2594 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2595 | check_uni(); |
79072805 LW |
2596 | if (s[1] == '<') |
2597 | s = scan_heredoc(s); | |
2598 | else | |
2599 | s = scan_inputsymbol(s); | |
2600 | TERM(sublex_start()); | |
378cc40b LW |
2601 | } |
2602 | s++; | |
2603 | tmp = *s++; | |
2604 | if (tmp == '<') | |
79072805 | 2605 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2606 | if (tmp == '=') { |
2607 | tmp = *s++; | |
2608 | if (tmp == '>') | |
79072805 | 2609 | Eop(OP_NCMP); |
395c3793 | 2610 | s--; |
79072805 | 2611 | Rop(OP_LE); |
395c3793 | 2612 | } |
378cc40b | 2613 | s--; |
79072805 | 2614 | Rop(OP_LT); |
378cc40b LW |
2615 | case '>': |
2616 | s++; | |
2617 | tmp = *s++; | |
2618 | if (tmp == '>') | |
79072805 | 2619 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2620 | if (tmp == '=') |
79072805 | 2621 | Rop(OP_GE); |
378cc40b | 2622 | s--; |
79072805 | 2623 | Rop(OP_GT); |
378cc40b LW |
2624 | |
2625 | case '$': | |
bbce6d69 | 2626 | CLINE; |
2627 | ||
3280af22 NIS |
2628 | if (PL_expect == XOPERATOR) { |
2629 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2630 | PL_expect = XTERM; | |
a0d0e21e | 2631 | depcom(); |
bbce6d69 | 2632 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2633 | } |
8990e307 | 2634 | } |
a0d0e21e | 2635 | |
6cef1e77 | 2636 | if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:+-", s[2]))) { |
3280af22 NIS |
2637 | if (PL_expect == XOPERATOR) |
2638 | no_op("Array length", PL_bufptr); | |
2639 | PL_tokenbuf[0] = '@'; | |
2640 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2641 | FALSE); |
3280af22 | 2642 | if (!PL_tokenbuf[1]) |
a0d0e21e | 2643 | PREREF(DOLSHARP); |
3280af22 NIS |
2644 | PL_expect = XOPERATOR; |
2645 | PL_pending_ident = '#'; | |
463ee0b2 | 2646 | TOKEN(DOLSHARP); |
79072805 | 2647 | } |
bbce6d69 | 2648 | |
3280af22 NIS |
2649 | if (PL_expect == XOPERATOR) |
2650 | no_op("Scalar", PL_bufptr); | |
2651 | PL_tokenbuf[0] = '$'; | |
2652 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2653 | if (!PL_tokenbuf[1]) { | |
2654 | if (s == PL_bufend) | |
bbce6d69 | 2655 | yyerror("Final $ should be \\$ or $name"); |
2656 | PREREF('$'); | |
8990e307 | 2657 | } |
a0d0e21e | 2658 | |
bbce6d69 | 2659 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 2660 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 2661 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 2662 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 2663 | yylval.opval->op_private = OPpCONST_ARYBASE; |
2664 | TERM(THING); | |
2665 | } | |
2666 | ||
ff68c719 | 2667 | d = s; |
3280af22 | 2668 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2669 | s = skipspace(s); |
2670 | ||
3280af22 | 2671 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2672 | char *t; |
2673 | if (*s == '[') { | |
3280af22 | 2674 | PL_tokenbuf[0] = '@'; |
599cee73 | 2675 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 2676 | for(t = s + 1; |
2677 | isSPACE(*t) || isALNUM(*t) || *t == '$'; | |
2678 | t++) ; | |
a0d0e21e | 2679 | if (*t++ == ',') { |
3280af22 NIS |
2680 | PL_bufptr = skipspace(PL_bufptr); |
2681 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 2682 | t++; |
599cee73 PM |
2683 | warner(WARN_SYNTAX, |
2684 | "Multidimensional syntax %.*s not supported", | |
2685 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
2686 | } |
2687 | } | |
bbce6d69 | 2688 | } |
2689 | else if (*s == '{') { | |
3280af22 | 2690 | PL_tokenbuf[0] = '%'; |
599cee73 | 2691 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 2692 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
2693 | { | |
3280af22 | 2694 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2695 | STRLEN len; |
2696 | for (t++; isSPACE(*t); t++) ; | |
748a9306 | 2697 | if (isIDFIRST(*t)) { |
8903cb82 | 2698 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
748a9306 | 2699 | if (*t != '(' && perl_get_cv(tmpbuf, FALSE)) |
599cee73 PM |
2700 | warner(WARN_SYNTAX, |
2701 | "You need to quote \"%s\"", tmpbuf); | |
748a9306 | 2702 | } |
93a17b20 LW |
2703 | } |
2704 | } | |
2f3197b3 | 2705 | } |
bbce6d69 | 2706 | |
3280af22 NIS |
2707 | PL_expect = XOPERATOR; |
2708 | if (PL_lex_state == LEX_NORMAL && isSPACE(*d)) { | |
2709 | bool islop = (PL_last_lop == PL_oldoldbufptr); | |
2710 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
2711 | PL_expect = XOPERATOR; | |
bbce6d69 | 2712 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 2713 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
bbce6d69 | 2714 | else if (strchr("&*<%", *s) && isIDFIRST(s[1])) |
3280af22 | 2715 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
68dc0745 | 2716 | else if (isIDFIRST(*s)) { |
3280af22 | 2717 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 2718 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
2719 | if (tmp = keyword(tmpbuf, len)) { |
2720 | /* binary operators exclude handle interpretations */ | |
2721 | switch (tmp) { | |
2722 | case -KEY_x: | |
2723 | case -KEY_eq: | |
2724 | case -KEY_ne: | |
2725 | case -KEY_gt: | |
2726 | case -KEY_lt: | |
2727 | case -KEY_ge: | |
2728 | case -KEY_le: | |
2729 | case -KEY_cmp: | |
2730 | break; | |
2731 | default: | |
3280af22 | 2732 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
2733 | break; |
2734 | } | |
2735 | } | |
68dc0745 | 2736 | else { |
2737 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2738 | if (gv && GvCVu(gv)) | |
3280af22 | 2739 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 2740 | } |
93a17b20 | 2741 | } |
bbce6d69 | 2742 | else if (isDIGIT(*s)) |
3280af22 | 2743 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 2744 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 2745 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
bbce6d69 | 2746 | else if (strchr("/?-+", *s) && !isSPACE(s[1])) |
3280af22 | 2747 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
bbce6d69 | 2748 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2])) |
3280af22 | 2749 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 2750 | } |
3280af22 | 2751 | PL_pending_ident = '$'; |
79072805 | 2752 | TOKEN('$'); |
378cc40b LW |
2753 | |
2754 | case '@': | |
3280af22 | 2755 | if (PL_expect == XOPERATOR) |
bbce6d69 | 2756 | no_op("Array", s); |
3280af22 NIS |
2757 | PL_tokenbuf[0] = '@'; |
2758 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2759 | if (!PL_tokenbuf[1]) { | |
2760 | if (s == PL_bufend) | |
bbce6d69 | 2761 | yyerror("Final @ should be \\@ or @name"); |
2762 | PREREF('@'); | |
2763 | } | |
3280af22 | 2764 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2765 | s = skipspace(s); |
3280af22 | 2766 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2767 | if (*s == '{') |
3280af22 | 2768 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
2769 | |
2770 | /* Warn about @ where they meant $. */ | |
599cee73 | 2771 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
2772 | if (*s == '[' || *s == '{') { |
2773 | char *t = s + 1; | |
2774 | while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t))) | |
2775 | t++; | |
2776 | if (*t == '}' || *t == ']') { | |
2777 | t++; | |
3280af22 | 2778 | PL_bufptr = skipspace(PL_bufptr); |
599cee73 PM |
2779 | warner(WARN_SYNTAX, |
2780 | "Scalar value %.*s better written as $%.*s", | |
3280af22 | 2781 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 2782 | } |
93a17b20 LW |
2783 | } |
2784 | } | |
463ee0b2 | 2785 | } |
3280af22 | 2786 | PL_pending_ident = '@'; |
79072805 | 2787 | TERM('@'); |
378cc40b LW |
2788 | |
2789 | case '/': /* may either be division or pattern */ | |
2790 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 2791 | if (PL_expect != XOPERATOR) { |
c277df42 | 2792 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
2793 | if (PL_oldoldbufptr == PL_last_uni |
2794 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
2795 | || memNE(PL_last_uni, "study", 5) || isALNUM(PL_last_uni[5]))) | |
c277df42 | 2796 | check_uni(); |
8782bef2 | 2797 | s = scan_pat(s,OP_MATCH); |
79072805 | 2798 | TERM(sublex_start()); |
378cc40b LW |
2799 | } |
2800 | tmp = *s++; | |
a687059c | 2801 | if (tmp == '/') |
79072805 | 2802 | Mop(OP_DIVIDE); |
378cc40b LW |
2803 | OPERATOR(tmp); |
2804 | ||
2805 | case '.': | |
51882d45 GS |
2806 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
2807 | #ifdef PERL_STRICT_CR | |
2808 | && s[1] == '\n' | |
2809 | #else | |
2810 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
2811 | #endif | |
2812 | && (s == PL_linestart || s[-1] == '\n') ) | |
2813 | { | |
3280af22 NIS |
2814 | PL_lex_formbrack = 0; |
2815 | PL_expect = XSTATE; | |
79072805 LW |
2816 | goto rightbracket; |
2817 | } | |
3280af22 | 2818 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 2819 | tmp = *s++; |
a687059c LW |
2820 | if (*s == tmp) { |
2821 | s++; | |
2f3197b3 LW |
2822 | if (*s == tmp) { |
2823 | s++; | |
79072805 | 2824 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2825 | } |
2826 | else | |
79072805 | 2827 | yylval.ival = 0; |
378cc40b | 2828 | OPERATOR(DOTDOT); |
a687059c | 2829 | } |
3280af22 | 2830 | if (PL_expect != XOPERATOR) |
2f3197b3 | 2831 | check_uni(); |
79072805 | 2832 | Aop(OP_CONCAT); |
378cc40b LW |
2833 | } |
2834 | /* FALL THROUGH */ | |
2835 | case '0': case '1': case '2': case '3': case '4': | |
2836 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2837 | s = scan_num(s); |
3280af22 | 2838 | if (PL_expect == XOPERATOR) |
8990e307 | 2839 | no_op("Number",s); |
79072805 LW |
2840 | TERM(THING); |
2841 | ||
2842 | case '\'': | |
8990e307 | 2843 | s = scan_str(s); |
3280af22 NIS |
2844 | if (PL_expect == XOPERATOR) { |
2845 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2846 | PL_expect = XTERM; | |
a0d0e21e LW |
2847 | depcom(); |
2848 | return ','; /* grandfather non-comma-format format */ | |
2849 | } | |
463ee0b2 | 2850 | else |
8990e307 | 2851 | no_op("String",s); |
463ee0b2 | 2852 | } |
79072805 | 2853 | if (!s) |
85e6fe83 | 2854 | missingterm((char*)0); |
79072805 LW |
2855 | yylval.ival = OP_CONST; |
2856 | TERM(sublex_start()); | |
2857 | ||
2858 | case '"': | |
8990e307 | 2859 | s = scan_str(s); |
3280af22 NIS |
2860 | if (PL_expect == XOPERATOR) { |
2861 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2862 | PL_expect = XTERM; | |
a0d0e21e LW |
2863 | depcom(); |
2864 | return ','; /* grandfather non-comma-format format */ | |
2865 | } | |
463ee0b2 | 2866 | else |
8990e307 | 2867 | no_op("String",s); |
463ee0b2 | 2868 | } |
79072805 | 2869 | if (!s) |
85e6fe83 | 2870 | missingterm((char*)0); |
4633a7c4 | 2871 | yylval.ival = OP_CONST; |
3280af22 | 2872 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 2873 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
2874 | yylval.ival = OP_STRINGIFY; |
2875 | break; | |
2876 | } | |
2877 | } | |
79072805 LW |
2878 | TERM(sublex_start()); |
2879 | ||
2880 | case '`': | |
2881 | s = scan_str(s); | |
3280af22 | 2882 | if (PL_expect == XOPERATOR) |
8990e307 | 2883 | no_op("Backticks",s); |
79072805 | 2884 | if (!s) |
85e6fe83 | 2885 | missingterm((char*)0); |
79072805 LW |
2886 | yylval.ival = OP_BACKTICK; |
2887 | set_csh(); | |
2888 | TERM(sublex_start()); | |
2889 | ||
2890 | case '\\': | |
2891 | s++; | |
599cee73 PM |
2892 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
2893 | warner(WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", | |
2894 | *s, *s); | |
3280af22 | 2895 | if (PL_expect == XOPERATOR) |
8990e307 | 2896 | no_op("Backslash",s); |
79072805 LW |
2897 | OPERATOR(REFGEN); |
2898 | ||
2899 | case 'x': | |
3280af22 | 2900 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
2901 | s++; |
2902 | Mop(OP_REPEAT); | |
2f3197b3 | 2903 | } |
79072805 LW |
2904 | goto keylookup; |
2905 | ||
378cc40b | 2906 | case '_': |
79072805 LW |
2907 | case 'a': case 'A': |
2908 | case 'b': case 'B': | |
2909 | case 'c': case 'C': | |
2910 | case 'd': case 'D': | |
2911 | case 'e': case 'E': | |
2912 | case 'f': case 'F': | |
2913 | case 'g': case 'G': | |
2914 | case 'h': case 'H': | |
2915 | case 'i': case 'I': | |
2916 | case 'j': case 'J': | |
2917 | case 'k': case 'K': | |
2918 | case 'l': case 'L': | |
2919 | case 'm': case 'M': | |
2920 | case 'n': case 'N': | |
2921 | case 'o': case 'O': | |
2922 | case 'p': case 'P': | |
2923 | case 'q': case 'Q': | |
2924 | case 'r': case 'R': | |
2925 | case 's': case 'S': | |
2926 | case 't': case 'T': | |
2927 | case 'u': case 'U': | |
2928 | case 'v': case 'V': | |
2929 | case 'w': case 'W': | |
2930 | case 'X': | |
2931 | case 'y': case 'Y': | |
2932 | case 'z': case 'Z': | |
2933 | ||
49dc05e3 | 2934 | keylookup: { |
161b471a NIS |
2935 | gv = Nullgv; |
2936 | gvp = 0; | |
49dc05e3 | 2937 | |
3280af22 NIS |
2938 | PL_bufptr = s; |
2939 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 2940 | |
2941 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
2942 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
2943 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
2944 | (PL_tokenbuf[0] == 'q' && | |
2945 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 2946 | |
2947 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 2948 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
2949 | goto just_a_word; |
2950 | ||
3643fb5f | 2951 | d = s; |
3280af22 | 2952 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
2953 | d++; /* no comments skipped here, or s### is misparsed */ |
2954 | ||
2955 | /* Is this a label? */ | |
3280af22 NIS |
2956 | if (!tmp && PL_expect == XSTATE |
2957 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 2958 | s = d + 1; |
3280af22 | 2959 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 2960 | CLINE; |
2961 | TOKEN(LABEL); | |
3643fb5f CS |
2962 | } |
2963 | ||
2964 | /* Check for keywords */ | |
3280af22 | 2965 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
2966 | |
2967 | /* Is this a word before a => operator? */ | |
748a9306 LW |
2968 | if (strnEQ(d,"=>",2)) { |
2969 | CLINE; | |
3280af22 | 2970 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
2971 | yylval.opval->op_private = OPpCONST_BARE; |
2972 | TERM(WORD); | |
2973 | } | |
2974 | ||
a0d0e21e | 2975 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
2976 | GV *ogv = Nullgv; /* override (winner) */ |
2977 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 2978 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 2979 | CV *cv; |
3280af22 | 2980 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
2981 | (cv = GvCVu(gv))) |
2982 | { | |
2983 | if (GvIMPORTED_CV(gv)) | |
2984 | ogv = gv; | |
2985 | else if (! CvMETHOD(cv)) | |
2986 | hgv = gv; | |
2987 | } | |
2988 | if (!ogv && | |
3280af22 NIS |
2989 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
2990 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
2991 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
2992 | { | |
2993 | ogv = gv; | |
2994 | } | |
2995 | } | |
2996 | if (ogv) { | |
2997 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
2998 | } |
2999 | else if (gv && !gvp | |
3000 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3001 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3002 | { |
3003 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3004 | } |
56f7f34b CS |
3005 | else { /* no override */ |
3006 | tmp = -tmp; | |
3007 | gv = Nullgv; | |
3008 | gvp = 0; | |
4944e2f7 GS |
3009 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3010 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
599cee73 PM |
3011 | warner(WARN_AMBIGUOUS, |
3012 | "Ambiguous call resolved as CORE::%s(), %s", | |
2f3ca594 | 3013 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3014 | } |
a0d0e21e LW |
3015 | } |
3016 | ||
3017 | reserved_word: | |
3018 | switch (tmp) { | |
79072805 LW |
3019 | |
3020 | default: /* not a keyword */ | |
93a17b20 | 3021 | just_a_word: { |
96e4d5b1 | 3022 | SV *sv; |
3280af22 | 3023 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3024 | |
3025 | /* Get the rest if it looks like a package qualifier */ | |
3026 | ||
a0d0e21e | 3027 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3028 | STRLEN morelen; |
3280af22 | 3029 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3030 | TRUE, &morelen); |
3031 | if (!morelen) | |
3280af22 | 3032 | croak("Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3033 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3034 | len += morelen; |
a0d0e21e | 3035 | } |
8990e307 | 3036 | |
3280af22 NIS |
3037 | if (PL_expect == XOPERATOR) { |
3038 | if (PL_bufptr == PL_linestart) { | |
3039 | PL_curcop->cop_line--; | |
599cee73 | 3040 | warner(WARN_SEMICOLON, warn_nosemi); |
3280af22 | 3041 | PL_curcop->cop_line++; |
463ee0b2 LW |
3042 | } |
3043 | else | |
54310121 | 3044 | no_op("Bareword",s); |
463ee0b2 | 3045 | } |
8990e307 | 3046 | |
c3e0f903 GS |
3047 | /* Look for a subroutine with this name in current package, |
3048 | unless name is "Foo::", in which case Foo is a bearword | |
3049 | (and a package name). */ | |
3050 | ||
3051 | if (len > 2 && | |
3280af22 | 3052 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3053 | { |
599cee73 PM |
3054 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3055 | warner(WARN_UNSAFE, | |
3056 | "Bareword \"%s\" refers to nonexistent package", | |
3280af22 | 3057 | PL_tokenbuf); |
c3e0f903 | 3058 | len -= 2; |
3280af22 | 3059 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3060 | gv = Nullgv; |
3061 | gvp = 0; | |
3062 | } | |
3063 | else { | |
3064 | len = 0; | |
3065 | if (!gv) | |
3280af22 | 3066 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3067 | } |
3068 | ||
3069 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3070 | |
49dc05e3 GS |
3071 | if (gvp) { |
3072 | sv = newSVpv("CORE::GLOBAL::",14); | |
3280af22 | 3073 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3074 | } |
3075 | else | |
3280af22 | 3076 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3077 | |
a0d0e21e LW |
3078 | /* Presume this is going to be a bareword of some sort. */ |
3079 | ||
3080 | CLINE; | |
49dc05e3 | 3081 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3082 | yylval.opval->op_private = OPpCONST_BARE; |
3083 | ||
c3e0f903 GS |
3084 | /* And if "Foo::", then that's what it certainly is. */ |
3085 | ||
3086 | if (len) | |
3087 | goto safe_bareword; | |
3088 | ||
8990e307 LW |
3089 | /* See if it's the indirect object for a list operator. */ |
3090 | ||
3280af22 NIS |
3091 | if (PL_oldoldbufptr && |
3092 | PL_oldoldbufptr < PL_bufptr && | |
3093 | (PL_oldoldbufptr == PL_last_lop || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3094 | /* NO SKIPSPACE BEFORE HERE! */ |
3280af22 NIS |
3095 | (PL_expect == XREF |
3096 | || ((opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF | |
3097 | || (PL_last_lop_op == OP_ENTERSUB | |
3098 | && PL_last_proto | |
3099 | && PL_last_proto[PL_last_proto[0] == ';' ? 1 : 0] == '*')) ) | |
a0d0e21e | 3100 | { |
748a9306 LW |
3101 | bool immediate_paren = *s == '('; |
3102 | ||
a0d0e21e LW |
3103 | /* (Now we can afford to cross potential line boundary.) */ |
3104 | s = skipspace(s); | |
3105 | ||
3106 | /* Two barewords in a row may indicate method call. */ | |
3107 | ||
3108 | if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv))) | |
3109 | return tmp; | |
3110 | ||
3111 | /* If not a declared subroutine, it's an indirect object. */ | |
3112 | /* (But it's an indir obj regardless for sort.) */ | |
3113 | ||
3280af22 | 3114 | if ((PL_last_lop_op == OP_SORT || |
8ebc5c01 | 3115 | (!immediate_paren && (!gv || !GvCVu(gv))) ) && |
3280af22 NIS |
3116 | (PL_last_lop_op != OP_MAPSTART && PL_last_lop_op != OP_GREPSTART)){ |
3117 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; | |
748a9306 | 3118 | goto bareword; |
93a17b20 LW |
3119 | } |
3120 | } | |
8990e307 LW |
3121 | |
3122 | /* If followed by a paren, it's certainly a subroutine. */ | |
3123 | ||
3280af22 | 3124 | PL_expect = XOPERATOR; |
8990e307 | 3125 | s = skipspace(s); |
93a17b20 | 3126 | if (*s == '(') { |
79072805 | 3127 | CLINE; |
96e4d5b1 | 3128 | if (gv && GvCVu(gv)) { |
3129 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
3130 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { | |
3131 | s = d + 1; | |
3132 | goto its_constant; | |
3133 | } | |
3134 | } | |
3280af22 NIS |
3135 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3136 | PL_expect = XOPERATOR; | |
93a17b20 | 3137 | force_next(WORD); |
c07a80fd | 3138 | yylval.ival = 0; |
463ee0b2 | 3139 | TOKEN('&'); |
79072805 | 3140 | } |
93a17b20 | 3141 | |
a0d0e21e | 3142 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3143 | |
8ebc5c01 | 3144 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3145 | PL_last_lop = PL_oldbufptr; |
3146 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3147 | PREBLOCK(METHOD); |
463ee0b2 LW |
3148 | } |
3149 | ||
8990e307 LW |
3150 | /* If followed by a bareword, see if it looks like indir obj. */ |
3151 | ||
a0d0e21e LW |
3152 | if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv))) |
3153 | return tmp; | |
93a17b20 | 3154 | |
8990e307 LW |
3155 | /* Not a method, so call it a subroutine (if defined) */ |
3156 | ||
8ebc5c01 | 3157 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3158 | CV* cv; |
748a9306 | 3159 | if (lastchar == '-') |
c2960299 | 3160 | warn("Ambiguous use of -%s resolved as -&%s()", |
3280af22 NIS |
3161 | PL_tokenbuf, PL_tokenbuf); |
3162 | PL_last_lop = PL_oldbufptr; | |
3163 | PL_last_lop_op = OP_ENTERSUB; | |
89bfa8cd | 3164 | /* Check for a constant sub */ |
46fc3d4c | 3165 | cv = GvCV(gv); |
96e4d5b1 | 3166 | if ((sv = cv_const_sv(cv))) { |
3167 | its_constant: | |
3168 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3169 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3170 | yylval.opval->op_private = 0; | |
3171 | TOKEN(WORD); | |
89bfa8cd | 3172 | } |
3173 | ||
a5f75d66 AD |
3174 | /* Resolve to GV now. */ |
3175 | op_free(yylval.opval); | |
3176 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
4633a7c4 LW |
3177 | /* Is there a prototype? */ |
3178 | if (SvPOK(cv)) { | |
3179 | STRLEN len; | |
3280af22 | 3180 | PL_last_proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3181 | if (!len) |
3182 | TERM(FUNC0SUB); | |
3280af22 | 3183 | if (strEQ(PL_last_proto, "$")) |
4633a7c4 | 3184 | OPERATOR(UNIOPSUB); |
3280af22 NIS |
3185 | if (*PL_last_proto == '&' && *s == '{') { |
3186 | sv_setpv(PL_subname,"__ANON__"); | |
4633a7c4 LW |
3187 | PREBLOCK(LSTOPSUB); |
3188 | } | |
2a841d13 | 3189 | } else |
3280af22 NIS |
3190 | PL_last_proto = NULL; |
3191 | PL_nextval[PL_nexttoke].opval = yylval.opval; | |
3192 | PL_expect = XTERM; | |
8990e307 LW |
3193 | force_next(WORD); |
3194 | TOKEN(NOAMP); | |
3195 | } | |
748a9306 | 3196 | |
3280af22 | 3197 | if (PL_hints & HINT_STRICT_SUBS && |
748a9306 | 3198 | lastchar != '-' && |
a0d0e21e | 3199 | strnNE(s,"->",2) && |
3280af22 NIS |
3200 | PL_last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */ |
3201 | PL_last_lop_op != OP_ACCEPT && | |
3202 | PL_last_lop_op != OP_PIPE_OP && | |
3203 | PL_last_lop_op != OP_SOCKPAIR) | |
a0d0e21e LW |
3204 | { |
3205 | warn( | |
3206 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
3280af22 NIS |
3207 | PL_tokenbuf); |
3208 | ++PL_error_count; | |
85e6fe83 | 3209 | } |
8990e307 LW |
3210 | |
3211 | /* Call it a bare word */ | |
3212 | ||
748a9306 | 3213 | bareword: |
599cee73 | 3214 | if (ckWARN(WARN_RESERVED)) { |
748a9306 | 3215 | if (lastchar != '-') { |
3280af22 | 3216 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; |
748a9306 | 3217 | if (!*d) |
599cee73 | 3218 | warner(WARN_RESERVED, warn_reserved, PL_tokenbuf); |
748a9306 LW |
3219 | } |
3220 | } | |
c3e0f903 GS |
3221 | |
3222 | safe_bareword: | |
748a9306 LW |
3223 | if (lastchar && strchr("*%&", lastchar)) { |
3224 | warn("Operator or semicolon missing before %c%s", | |
3280af22 | 3225 | lastchar, PL_tokenbuf); |
c2960299 | 3226 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3227 | lastchar, lastchar); |
3228 | } | |
93a17b20 | 3229 | TOKEN(WORD); |
79072805 | 3230 | } |
79072805 | 3231 | |
68dc0745 | 3232 | case KEY___FILE__: |
46fc3d4c | 3233 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3234 | newSVsv(GvSV(PL_curcop->cop_filegv))); |
46fc3d4c | 3235 | TERM(THING); |
3236 | ||
79072805 | 3237 | case KEY___LINE__: |
46fc3d4c | 3238 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3239 | newSVpvf("%ld", (long)PL_curcop->cop_line)); |
79072805 | 3240 | TERM(THING); |
68dc0745 | 3241 | |
3242 | case KEY___PACKAGE__: | |
3243 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3244 | (PL_curstash |
3245 | ? newSVsv(PL_curstname) | |
3246 | : &PL_sv_undef)); | |
79072805 | 3247 | TERM(THING); |
79072805 | 3248 | |
e50aee73 | 3249 | case KEY___DATA__: |
79072805 LW |
3250 | case KEY___END__: { |
3251 | GV *gv; | |
79072805 LW |
3252 | |
3253 | /*SUPPRESS 560*/ | |
3280af22 | 3254 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3255 | char *pname = "main"; |
3280af22 NIS |
3256 | if (PL_tokenbuf[2] == 'D') |
3257 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
46fc3d4c | 3258 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3259 | GvMULTI_on(gv); |
79072805 | 3260 | if (!GvIO(gv)) |
a0d0e21e | 3261 | GvIOp(gv) = newIO(); |
3280af22 | 3262 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3263 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3264 | { | |
3280af22 | 3265 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3266 | fcntl(fd,F_SETFD,fd >= 3); |
3267 | } | |
79072805 | 3268 | #endif |
fd049845 | 3269 | /* Mark this internal pseudo-handle as clean */ |
3270 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3271 | if (PL_preprocess) |
a0d0e21e | 3272 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3273 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3274 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3275 | else |
a0d0e21e | 3276 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3277 | PL_rsfp = Nullfp; |
79072805 LW |
3278 | } |
3279 | goto fake_eof; | |
e929a76b | 3280 | } |
de3bb511 | 3281 | |
8990e307 | 3282 | case KEY_AUTOLOAD: |
ed6116ce | 3283 | case KEY_DESTROY: |
79072805 LW |
3284 | case KEY_BEGIN: |
3285 | case KEY_END: | |
7d07dbc2 | 3286 | case KEY_INIT: |
3280af22 NIS |
3287 | if (PL_expect == XSTATE) { |
3288 | s = PL_bufptr; | |
93a17b20 | 3289 | goto really_sub; |
79072805 LW |
3290 | } |
3291 | goto just_a_word; | |
3292 | ||
a0d0e21e LW |
3293 | case KEY_CORE: |
3294 | if (*s == ':' && s[1] == ':') { | |
3295 | s += 2; | |
748a9306 | 3296 | d = s; |
3280af22 NIS |
3297 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3298 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3299 | if (tmp < 0) |
3300 | tmp = -tmp; | |
3301 | goto reserved_word; | |
3302 | } | |
3303 | goto just_a_word; | |
3304 | ||
463ee0b2 LW |
3305 | case KEY_abs: |
3306 | UNI(OP_ABS); | |
3307 | ||
79072805 LW |
3308 | case KEY_alarm: |
3309 | UNI(OP_ALARM); | |
3310 | ||
3311 | case KEY_accept: | |
a0d0e21e | 3312 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3313 | |
463ee0b2 LW |
3314 | case KEY_and: |
3315 | OPERATOR(ANDOP); | |
3316 | ||
79072805 | 3317 | case KEY_atan2: |
a0d0e21e | 3318 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3319 | |
79072805 | 3320 | case KEY_bind: |
a0d0e21e | 3321 | LOP(OP_BIND,XTERM); |
79072805 LW |
3322 | |
3323 | case KEY_binmode: | |
3324 | UNI(OP_BINMODE); | |
3325 | ||
3326 | case KEY_bless: | |
a0d0e21e | 3327 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3328 | |
3329 | case KEY_chop: | |
3330 | UNI(OP_CHOP); | |
3331 | ||
3332 | case KEY_continue: | |
3333 | PREBLOCK(CONTINUE); | |
3334 | ||
3335 | case KEY_chdir: | |
85e6fe83 | 3336 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3337 | UNI(OP_CHDIR); |
3338 | ||
3339 | case KEY_close: | |
3340 | UNI(OP_CLOSE); | |
3341 | ||
3342 | case KEY_closedir: | |
3343 | UNI(OP_CLOSEDIR); | |
3344 | ||
3345 | case KEY_cmp: | |
3346 | Eop(OP_SCMP); | |
3347 | ||
3348 | case KEY_caller: | |
3349 | UNI(OP_CALLER); | |
3350 | ||
3351 | case KEY_crypt: | |
3352 | #ifdef FCRYPT | |
6b88bc9c | 3353 | if (!PL_cryptseen++) |
de3bb511 | 3354 | init_des(); |
a687059c | 3355 | #endif |
a0d0e21e | 3356 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3357 | |
3358 | case KEY_chmod: | |
599cee73 | 3359 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3360 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
3361 | if (*d != '0' && isDIGIT(*d)) |
3362 | yywarn("chmod: mode argument is missing initial 0"); | |
3363 | } | |
a0d0e21e | 3364 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3365 | |
3366 | case KEY_chown: | |
a0d0e21e | 3367 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3368 | |
3369 | case KEY_connect: | |
a0d0e21e | 3370 | LOP(OP_CONNECT,XTERM); |
79072805 | 3371 | |
463ee0b2 LW |
3372 | case KEY_chr: |
3373 | UNI(OP_CHR); | |
3374 | ||
79072805 LW |
3375 | case KEY_cos: |
3376 | UNI(OP_COS); | |
3377 | ||
3378 | case KEY_chroot: | |
3379 | UNI(OP_CHROOT); | |
3380 | ||
3381 | case KEY_do: | |
3382 | s = skipspace(s); | |
3383 | if (*s == '{') | |
a0d0e21e | 3384 | PRETERMBLOCK(DO); |
79072805 | 3385 | if (*s != '\'') |
a0d0e21e | 3386 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3387 | OPERATOR(DO); |
79072805 LW |
3388 | |
3389 | case KEY_die: | |
3280af22 | 3390 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3391 | LOP(OP_DIE,XTERM); |
79072805 LW |
3392 | |
3393 | case KEY_defined: | |
3394 | UNI(OP_DEFINED); | |
3395 | ||
3396 | case KEY_delete: | |
a0d0e21e | 3397 | UNI(OP_DELETE); |
79072805 LW |
3398 | |
3399 | case KEY_dbmopen: | |
a0d0e21e LW |
3400 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3401 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3402 | |
3403 | case KEY_dbmclose: | |
3404 | UNI(OP_DBMCLOSE); | |
3405 | ||
3406 | case KEY_dump: | |
a0d0e21e | 3407 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3408 | LOOPX(OP_DUMP); |
3409 | ||
3410 | case KEY_else: | |
3411 | PREBLOCK(ELSE); | |
3412 | ||
3413 | case KEY_elsif: | |
3280af22 | 3414 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3415 | OPERATOR(ELSIF); |
3416 | ||
3417 | case KEY_eq: | |
3418 | Eop(OP_SEQ); | |
3419 | ||
a0d0e21e LW |
3420 | case KEY_exists: |
3421 | UNI(OP_EXISTS); | |
3422 | ||
79072805 LW |
3423 | case KEY_exit: |
3424 | UNI(OP_EXIT); | |
3425 | ||
3426 | case KEY_eval: | |
79072805 | 3427 | s = skipspace(s); |
3280af22 | 3428 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3429 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3430 | |
3431 | case KEY_eof: | |
3432 | UNI(OP_EOF); | |
3433 | ||
3434 | case KEY_exp: | |
3435 | UNI(OP_EXP); | |
3436 | ||
3437 | case KEY_each: | |
3438 | UNI(OP_EACH); | |
3439 | ||
3440 | case KEY_exec: | |
3441 | set_csh(); | |
a0d0e21e | 3442 | LOP(OP_EXEC,XREF); |
79072805 LW |
3443 | |
3444 | case KEY_endhostent: | |
3445 | FUN0(OP_EHOSTENT); | |
3446 | ||
3447 | case KEY_endnetent: | |
3448 | FUN0(OP_ENETENT); | |
3449 | ||
3450 | case KEY_endservent: | |
3451 | FUN0(OP_ESERVENT); | |
3452 | ||
3453 | case KEY_endprotoent: | |
3454 | FUN0(OP_EPROTOENT); | |
3455 | ||
3456 | case KEY_endpwent: | |
3457 | FUN0(OP_EPWENT); | |
3458 | ||
3459 | case KEY_endgrent: | |
3460 | FUN0(OP_EGRENT); | |
3461 | ||
3462 | case KEY_for: | |
3463 | case KEY_foreach: | |
3280af22 | 3464 | yylval.ival = PL_curcop->cop_line; |
55497cff | 3465 | s = skipspace(s); |
3280af22 | 3466 | if (PL_expect == XSTATE && isIDFIRST(*s)) { |
55497cff | 3467 | char *p = s; |
3280af22 | 3468 | if ((PL_bufend - p) >= 3 && |
55497cff | 3469 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3470 | p += 2; | |
3471 | p = skipspace(p); | |
3472 | if (isIDFIRST(*p)) | |
3473 | croak("Missing $ on loop variable"); | |
3474 | } | |
79072805 LW |
3475 | OPERATOR(FOR); |
3476 | ||
3477 | case KEY_formline: | |
a0d0e21e | 3478 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3479 | |
3480 | case KEY_fork: | |
3481 | FUN0(OP_FORK); | |
3482 | ||
3483 | case KEY_fcntl: | |
a0d0e21e | 3484 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3485 | |
3486 | case KEY_fileno: | |
3487 | UNI(OP_FILENO); | |
3488 | ||
3489 | case KEY_flock: | |
a0d0e21e | 3490 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3491 | |
3492 | case KEY_gt: | |
3493 | Rop(OP_SGT); | |
3494 | ||
3495 | case KEY_ge: | |
3496 | Rop(OP_SGE); | |
3497 | ||
3498 | case KEY_grep: | |
a0d0e21e | 3499 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3500 | |
3501 | case KEY_goto: | |
a0d0e21e | 3502 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3503 | LOOPX(OP_GOTO); |
3504 | ||
3505 | case KEY_gmtime: | |
3506 | UNI(OP_GMTIME); | |
3507 | ||
3508 | case KEY_getc: | |
3509 | UNI(OP_GETC); | |
3510 | ||
3511 | case KEY_getppid: | |
3512 | FUN0(OP_GETPPID); | |
3513 | ||
3514 | case KEY_getpgrp: | |
3515 | UNI(OP_GETPGRP); | |
3516 | ||
3517 | case KEY_getpriority: | |
a0d0e21e | 3518 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3519 | |
3520 | case KEY_getprotobyname: | |
3521 | UNI(OP_GPBYNAME); | |
3522 | ||
3523 | case KEY_getprotobynumber: | |
a0d0e21e | 3524 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3525 | |
3526 | case KEY_getprotoent: | |
3527 | FUN0(OP_GPROTOENT); | |
3528 | ||
3529 | case KEY_getpwent: | |
3530 | FUN0(OP_GPWENT); | |
3531 | ||
3532 | case KEY_getpwnam: | |
ff68c719 | 3533 | UNI(OP_GPWNAM); |
79072805 LW |
3534 | |
3535 | case KEY_getpwuid: | |
ff68c719 | 3536 | UNI(OP_GPWUID); |
79072805 LW |
3537 | |
3538 | case KEY_getpeername: | |
3539 | UNI(OP_GETPEERNAME); | |
3540 | ||
3541 | case KEY_gethostbyname: | |
3542 | UNI(OP_GHBYNAME); | |
3543 | ||
3544 | case KEY_gethostbyaddr: | |
a0d0e21e | 3545 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
3546 | |
3547 | case KEY_gethostent: | |
3548 | FUN0(OP_GHOSTENT); | |
3549 | ||
3550 | case KEY_getnetbyname: | |
3551 | UNI(OP_GNBYNAME); | |
3552 | ||
3553 | case KEY_getnetbyaddr: | |
a0d0e21e | 3554 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
3555 | |
3556 | case KEY_getnetent: | |
3557 | FUN0(OP_GNETENT); | |
3558 | ||
3559 | case KEY_getservbyname: | |
a0d0e21e | 3560 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
3561 | |
3562 | case KEY_getservbyport: | |
a0d0e21e | 3563 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
3564 | |
3565 | case KEY_getservent: | |
3566 | FUN0(OP_GSERVENT); | |
3567 | ||
3568 | case KEY_getsockname: | |
3569 | UNI(OP_GETSOCKNAME); | |
3570 | ||
3571 | case KEY_getsockopt: | |
a0d0e21e | 3572 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
3573 | |
3574 | case KEY_getgrent: | |
3575 | FUN0(OP_GGRENT); | |
3576 | ||
3577 | case KEY_getgrnam: | |
ff68c719 | 3578 | UNI(OP_GGRNAM); |
79072805 LW |
3579 | |
3580 | case KEY_getgrgid: | |
ff68c719 | 3581 | UNI(OP_GGRGID); |
79072805 LW |
3582 | |
3583 | case KEY_getlogin: | |
3584 | FUN0(OP_GETLOGIN); | |
3585 | ||
93a17b20 | 3586 | case KEY_glob: |
a0d0e21e LW |
3587 | set_csh(); |
3588 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 3589 | |
79072805 LW |
3590 | case KEY_hex: |
3591 | UNI(OP_HEX); | |
3592 | ||
3593 | case KEY_if: | |
3280af22 | 3594 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3595 | OPERATOR(IF); |
3596 | ||
3597 | case KEY_index: | |
a0d0e21e | 3598 | LOP(OP_INDEX,XTERM); |
79072805 LW |
3599 | |
3600 | case KEY_int: | |
3601 | UNI(OP_INT); | |
3602 | ||
3603 | case KEY_ioctl: | |
a0d0e21e | 3604 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
3605 | |
3606 | case KEY_join: | |
a0d0e21e | 3607 | LOP(OP_JOIN,XTERM); |
79072805 LW |
3608 | |
3609 | case KEY_keys: | |
3610 | UNI(OP_KEYS); | |
3611 | ||
3612 | case KEY_kill: | |
a0d0e21e | 3613 | LOP(OP_KILL,XTERM); |
79072805 LW |
3614 | |
3615 | case KEY_last: | |
a0d0e21e | 3616 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 3617 | LOOPX(OP_LAST); |
a0d0e21e | 3618 | |
79072805 LW |
3619 | case KEY_lc: |
3620 | UNI(OP_LC); | |
3621 | ||
3622 | case KEY_lcfirst: | |
3623 | UNI(OP_LCFIRST); | |
3624 | ||
3625 | case KEY_local: | |
3626 | OPERATOR(LOCAL); | |
3627 | ||
3628 | case KEY_length: | |
3629 | UNI(OP_LENGTH); | |
3630 | ||
3631 | case KEY_lt: | |
3632 | Rop(OP_SLT); | |
3633 | ||
3634 | case KEY_le: | |
3635 | Rop(OP_SLE); | |
3636 | ||
3637 | case KEY_localtime: | |
3638 | UNI(OP_LOCALTIME); | |
3639 | ||
3640 | case KEY_log: | |
3641 | UNI(OP_LOG); | |
3642 | ||
3643 | case KEY_link: | |
a0d0e21e | 3644 | LOP(OP_LINK,XTERM); |
79072805 LW |
3645 | |
3646 | case KEY_listen: | |
a0d0e21e | 3647 | LOP(OP_LISTEN,XTERM); |
79072805 | 3648 | |
c0329465 MB |
3649 | case KEY_lock: |
3650 | UNI(OP_LOCK); | |
3651 | ||
79072805 LW |
3652 | case KEY_lstat: |
3653 | UNI(OP_LSTAT); | |
3654 | ||
3655 | case KEY_m: | |
8782bef2 | 3656 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
3657 | TERM(sublex_start()); |
3658 | ||
a0d0e21e LW |
3659 | case KEY_map: |
3660 | LOP(OP_MAPSTART,XREF); | |
3661 | ||
79072805 | 3662 | case KEY_mkdir: |
a0d0e21e | 3663 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
3664 | |
3665 | case KEY_msgctl: | |
a0d0e21e | 3666 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
3667 | |
3668 | case KEY_msgget: | |
a0d0e21e | 3669 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
3670 | |
3671 | case KEY_msgrcv: | |
a0d0e21e | 3672 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
3673 | |
3674 | case KEY_msgsnd: | |
a0d0e21e | 3675 | LOP(OP_MSGSND,XTERM); |
79072805 | 3676 | |
93a17b20 | 3677 | case KEY_my: |
3280af22 | 3678 | PL_in_my = TRUE; |
c750a3ec MB |
3679 | s = skipspace(s); |
3680 | if (isIDFIRST(*s)) { | |
3280af22 NIS |
3681 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
3682 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); | |
3683 | if (!PL_in_my_stash) { | |
c750a3ec | 3684 | char tmpbuf[1024]; |
3280af22 NIS |
3685 | PL_bufptr = s; |
3686 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
3687 | yyerror(tmpbuf); |
3688 | } | |
3689 | } | |
55497cff | 3690 | OPERATOR(MY); |
93a17b20 | 3691 | |
79072805 | 3692 | case KEY_next: |
a0d0e21e | 3693 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3694 | LOOPX(OP_NEXT); |
3695 | ||
3696 | case KEY_ne: | |
3697 | Eop(OP_SNE); | |
3698 | ||
a0d0e21e | 3699 | case KEY_no: |
3280af22 | 3700 | if (PL_expect != XSTATE) |
a0d0e21e LW |
3701 | yyerror("\"no\" not allowed in expression"); |
3702 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 3703 | s = force_version(s); |
a0d0e21e LW |
3704 | yylval.ival = 0; |
3705 | OPERATOR(USE); | |
3706 | ||
3707 | case KEY_not: | |
3708 | OPERATOR(NOTOP); | |
3709 | ||
79072805 | 3710 | case KEY_open: |
93a17b20 LW |
3711 | s = skipspace(s); |
3712 | if (isIDFIRST(*s)) { | |
3713 | char *t; | |
3714 | for (d = s; isALNUM(*d); d++) ; | |
3715 | t = skipspace(d); | |
3716 | if (strchr("|&*+-=!?:.", *t)) | |
3717 | warn("Precedence problem: open %.*s should be open(%.*s)", | |
3718 | d-s,s, d-s,s); | |
3719 | } | |
a0d0e21e | 3720 | LOP(OP_OPEN,XTERM); |
79072805 | 3721 | |
463ee0b2 | 3722 | case KEY_or: |
a0d0e21e | 3723 | yylval.ival = OP_OR; |
463ee0b2 LW |
3724 | OPERATOR(OROP); |
3725 | ||
79072805 LW |
3726 | case KEY_ord: |
3727 | UNI(OP_ORD); | |
3728 | ||
3729 | case KEY_oct: | |
3730 | UNI(OP_OCT); | |
3731 | ||
3732 | case KEY_opendir: | |
a0d0e21e | 3733 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
3734 | |
3735 | case KEY_print: | |
3280af22 | 3736 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 3737 | LOP(OP_PRINT,XREF); |
79072805 LW |
3738 | |
3739 | case KEY_printf: | |
3280af22 | 3740 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 3741 | LOP(OP_PRTF,XREF); |
79072805 | 3742 | |
c07a80fd | 3743 | case KEY_prototype: |
3744 | UNI(OP_PROTOTYPE); | |
3745 | ||
79072805 | 3746 | case KEY_push: |
a0d0e21e | 3747 | LOP(OP_PUSH,XTERM); |
79072805 LW |
3748 | |
3749 | case KEY_pop: | |
3750 | UNI(OP_POP); | |
3751 | ||
a0d0e21e LW |
3752 | case KEY_pos: |
3753 | UNI(OP_POS); | |
3754 | ||
79072805 | 3755 | case KEY_pack: |
a0d0e21e | 3756 | LOP(OP_PACK,XTERM); |
79072805 LW |
3757 | |
3758 | case KEY_package: | |
a0d0e21e | 3759 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
3760 | OPERATOR(PACKAGE); |
3761 | ||
3762 | case KEY_pipe: | |
a0d0e21e | 3763 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
3764 | |
3765 | case KEY_q: | |
3766 | s = scan_str(s); | |
3767 | if (!s) | |
85e6fe83 | 3768 | missingterm((char*)0); |
79072805 LW |
3769 | yylval.ival = OP_CONST; |
3770 | TERM(sublex_start()); | |
3771 | ||
a0d0e21e LW |
3772 | case KEY_quotemeta: |
3773 | UNI(OP_QUOTEMETA); | |
3774 | ||
8990e307 LW |
3775 | case KEY_qw: |
3776 | s = scan_str(s); | |
3777 | if (!s) | |
85e6fe83 | 3778 | missingterm((char*)0); |
599cee73 | 3779 | if (ckWARN(WARN_SYNTAX) && SvLEN(PL_lex_stuff)) { |
3280af22 | 3780 | d = SvPV_force(PL_lex_stuff, len); |
55497cff | 3781 | for (; len; --len, ++d) { |
3782 | if (*d == ',') { | |
599cee73 PM |
3783 | warner(WARN_SYNTAX, |
3784 | "Possible attempt to separate words with commas"); | |
55497cff | 3785 | break; |
3786 | } | |
3787 | if (*d == '#') { | |
599cee73 PM |
3788 | warner(WARN_SYNTAX, |
3789 | "Possible attempt to put comments in qw() list"); | |
55497cff | 3790 | break; |
3791 | } | |
3792 | } | |
3793 | } | |
8990e307 | 3794 | force_next(')'); |
3280af22 NIS |
3795 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, tokeq(PL_lex_stuff)); |
3796 | PL_lex_stuff = Nullsv; | |
8990e307 LW |
3797 | force_next(THING); |
3798 | force_next(','); | |
3280af22 | 3799 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1)); |
8990e307 LW |
3800 | force_next(THING); |
3801 | force_next('('); | |
a0d0e21e LW |
3802 | yylval.ival = OP_SPLIT; |
3803 | CLINE; | |
3280af22 NIS |
3804 | PL_expect = XTERM; |
3805 | PL_bufptr = s; | |
3806 | PL_last_lop = PL_oldbufptr; | |
3807 | PL_last_lop_op = OP_SPLIT; | |
a0d0e21e | 3808 | return FUNC; |
8990e307 | 3809 | |
79072805 LW |
3810 | case KEY_qq: |
3811 | s = scan_str(s); | |
3812 | if (!s) | |
85e6fe83 | 3813 | missingterm((char*)0); |
a0d0e21e | 3814 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
3815 | if (SvIVX(PL_lex_stuff) == '\'') |
3816 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
3817 | TERM(sublex_start()); |
3818 | ||
8782bef2 GB |
3819 | case KEY_qr: |
3820 | s = scan_pat(s,OP_QR); | |
3821 | TERM(sublex_start()); | |
3822 | ||
79072805 LW |
3823 | case KEY_qx: |
3824 | s = scan_str(s); | |
3825 | if (!s) | |
85e6fe83 | 3826 | missingterm((char*)0); |
79072805 LW |
3827 | yylval.ival = OP_BACKTICK; |
3828 | set_csh(); | |
3829 | TERM(sublex_start()); | |
3830 | ||
3831 | case KEY_return: | |
3832 | OLDLOP(OP_RETURN); | |
3833 | ||
3834 | case KEY_require: | |
3280af22 | 3835 | *PL_tokenbuf = '\0'; |
a0d0e21e | 3836 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
3280af22 NIS |
3837 | if (isIDFIRST(*PL_tokenbuf)) |
3838 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); | |
748a9306 | 3839 | else if (*s == '<') |
a0d0e21e | 3840 | yyerror("<> should be quotes"); |
463ee0b2 | 3841 | UNI(OP_REQUIRE); |
79072805 LW |
3842 | |
3843 | case KEY_reset: | |
3844 | UNI(OP_RESET); | |
3845 | ||
3846 | case KEY_redo: | |
a0d0e21e | 3847 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3848 | LOOPX(OP_REDO); |
3849 | ||
3850 | case KEY_rename: | |
a0d0e21e | 3851 | LOP(OP_RENAME,XTERM); |
79072805 LW |
3852 | |
3853 | case KEY_rand: | |
3854 | UNI(OP_RAND); | |
3855 | ||
3856 | case KEY_rmdir: | |
3857 | UNI(OP_RMDIR); | |
3858 | ||
3859 | case KEY_rindex: | |
a0d0e21e | 3860 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
3861 | |
3862 | case KEY_read: | |
a0d0e21e | 3863 | LOP(OP_READ,XTERM); |
79072805 LW |
3864 | |
3865 | case KEY_readdir: | |
3866 | UNI(OP_READDIR); | |
3867 | ||
93a17b20 LW |
3868 | case KEY_readline: |
3869 | set_csh(); | |
3870 | UNI(OP_READLINE); | |
3871 | ||
3872 | case KEY_readpipe: | |
3873 | set_csh(); | |
3874 | UNI(OP_BACKTICK); | |
3875 | ||
79072805 LW |
3876 | case KEY_rewinddir: |
3877 | UNI(OP_REWINDDIR); | |
3878 | ||
3879 | case KEY_recv: | |
a0d0e21e | 3880 | LOP(OP_RECV,XTERM); |
79072805 LW |
3881 | |
3882 | case KEY_reverse: | |
a0d0e21e | 3883 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
3884 | |
3885 | case KEY_readlink: | |
3886 | UNI(OP_READLINK); | |
3887 | ||
3888 | case KEY_ref: | |
3889 | UNI(OP_REF); | |
3890 | ||
3891 | case KEY_s: | |
3892 | s = scan_subst(s); | |
3893 | if (yylval.opval) | |
3894 | TERM(sublex_start()); | |
3895 | else | |
3896 | TOKEN(1); /* force error */ | |
3897 | ||
a0d0e21e LW |
3898 | case KEY_chomp: |
3899 | UNI(OP_CHOMP); | |
3900 | ||
79072805 LW |
3901 | case KEY_scalar: |
3902 | UNI(OP_SCALAR); | |
3903 | ||
3904 | case KEY_select: | |
a0d0e21e | 3905 | LOP(OP_SELECT,XTERM); |
79072805 LW |
3906 | |
3907 | case KEY_seek: | |
a0d0e21e | 3908 | LOP(OP_SEEK,XTERM); |
79072805 LW |
3909 | |
3910 | case KEY_semctl: | |
a0d0e21e | 3911 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
3912 | |
3913 | case KEY_semget: | |
a0d0e21e | 3914 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
3915 | |
3916 | case KEY_semop: | |
a0d0e21e | 3917 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
3918 | |
3919 | case KEY_send: | |
a0d0e21e | 3920 | LOP(OP_SEND,XTERM); |
79072805 LW |
3921 | |
3922 | case KEY_setpgrp: | |
a0d0e21e | 3923 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
3924 | |
3925 | case KEY_setpriority: | |
a0d0e21e | 3926 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
3927 | |
3928 | case KEY_sethostent: | |
ff68c719 | 3929 | UNI(OP_SHOSTENT); |
79072805 LW |
3930 | |
3931 | case KEY_setnetent: | |
ff68c719 | 3932 | UNI(OP_SNETENT); |
79072805 LW |
3933 | |
3934 | case KEY_setservent: | |
ff68c719 | 3935 | UNI(OP_SSERVENT); |
79072805 LW |
3936 | |
3937 | case KEY_setprotoent: | |
ff68c719 | 3938 | UNI(OP_SPROTOENT); |
79072805 LW |
3939 | |
3940 | case KEY_setpwent: | |
3941 | FUN0(OP_SPWENT); | |
3942 | ||
3943 | case KEY_setgrent: | |
3944 | FUN0(OP_SGRENT); | |
3945 | ||
3946 | case KEY_seekdir: | |
a0d0e21e | 3947 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
3948 | |
3949 | case KEY_setsockopt: | |
a0d0e21e | 3950 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
3951 | |
3952 | case KEY_shift: | |
3953 | UNI(OP_SHIFT); | |
3954 | ||
3955 | case KEY_shmctl: | |
a0d0e21e | 3956 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
3957 | |
3958 | case KEY_shmget: | |
a0d0e21e | 3959 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
3960 | |
3961 | case KEY_shmread: | |
a0d0e21e | 3962 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
3963 | |
3964 | case KEY_shmwrite: | |
a0d0e21e | 3965 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
3966 | |
3967 | case KEY_shutdown: | |
a0d0e21e | 3968 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
3969 | |
3970 | case KEY_sin: | |
3971 | UNI(OP_SIN); | |
3972 | ||
3973 | case KEY_sleep: | |
3974 | UNI(OP_SLEEP); | |
3975 | ||
3976 | case KEY_socket: | |
a0d0e21e | 3977 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
3978 | |
3979 | case KEY_socketpair: | |
a0d0e21e | 3980 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
3981 | |
3982 | case KEY_sort: | |
3280af22 | 3983 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
3984 | s = skipspace(s); |
3985 | if (*s == ';' || *s == ')') /* probably a close */ | |
463ee0b2 | 3986 | croak("sort is now a reserved word"); |
3280af22 | 3987 | PL_expect = XTERM; |
15f0808c | 3988 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 3989 | LOP(OP_SORT,XREF); |
79072805 LW |
3990 | |
3991 | case KEY_split: | |
a0d0e21e | 3992 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
3993 | |
3994 | case KEY_sprintf: | |
a0d0e21e | 3995 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
3996 | |
3997 | case KEY_splice: | |
a0d0e21e | 3998 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
3999 | |
4000 | case KEY_sqrt: | |
4001 | UNI(OP_SQRT); | |
4002 | ||
4003 | case KEY_srand: | |
4004 | UNI(OP_SRAND); | |
4005 | ||
4006 | case KEY_stat: | |
4007 | UNI(OP_STAT); | |
4008 | ||
4009 | case KEY_study: | |
3280af22 | 4010 | PL_sawstudy++; |
79072805 LW |
4011 | UNI(OP_STUDY); |
4012 | ||
4013 | case KEY_substr: | |
a0d0e21e | 4014 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4015 | |
4016 | case KEY_format: | |
4017 | case KEY_sub: | |
93a17b20 | 4018 | really_sub: |
79072805 | 4019 | s = skipspace(s); |
4633a7c4 | 4020 | |
463ee0b2 | 4021 | if (isIDFIRST(*s) || *s == '\'' || *s == ':') { |
3280af22 NIS |
4022 | char tmpbuf[sizeof PL_tokenbuf]; |
4023 | PL_expect = XBLOCK; | |
8903cb82 | 4024 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
463ee0b2 | 4025 | if (strchr(tmpbuf, ':')) |
3280af22 | 4026 | sv_setpv(PL_subname, tmpbuf); |
463ee0b2 | 4027 | else { |
3280af22 NIS |
4028 | sv_setsv(PL_subname,PL_curstname); |
4029 | sv_catpvn(PL_subname,"::",2); | |
4030 | sv_catpvn(PL_subname,tmpbuf,len); | |
463ee0b2 | 4031 | } |
a0d0e21e | 4032 | s = force_word(s,WORD,FALSE,TRUE,TRUE); |
4633a7c4 | 4033 | s = skipspace(s); |
79072805 | 4034 | } |
4633a7c4 | 4035 | else { |
3280af22 NIS |
4036 | PL_expect = XTERMBLOCK; |
4037 | sv_setpv(PL_subname,"?"); | |
4633a7c4 LW |
4038 | } |
4039 | ||
4040 | if (tmp == KEY_format) { | |
4041 | s = skipspace(s); | |
4042 | if (*s == '=') | |
3280af22 | 4043 | PL_lex_formbrack = PL_lex_brackets + 1; |
4633a7c4 LW |
4044 | OPERATOR(FORMAT); |
4045 | } | |
79072805 | 4046 | |
4633a7c4 LW |
4047 | /* Look for a prototype */ |
4048 | if (*s == '(') { | |
68dc0745 | 4049 | char *p; |
4050 | ||
4633a7c4 LW |
4051 | s = scan_str(s); |
4052 | if (!s) { | |
3280af22 NIS |
4053 | if (PL_lex_stuff) |
4054 | SvREFCNT_dec(PL_lex_stuff); | |
4055 | PL_lex_stuff = Nullsv; | |
4633a7c4 LW |
4056 | croak("Prototype not terminated"); |
4057 | } | |
68dc0745 | 4058 | /* strip spaces */ |
3280af22 | 4059 | d = SvPVX(PL_lex_stuff); |
68dc0745 | 4060 | tmp = 0; |
4061 | for (p = d; *p; ++p) { | |
4062 | if (!isSPACE(*p)) | |
4063 | d[tmp++] = *p; | |
4064 | } | |
4065 | d[tmp] = '\0'; | |
3280af22 NIS |
4066 | SvCUR(PL_lex_stuff) = tmp; |
4067 | ||
4068 | PL_nexttoke++; | |
4069 | PL_nextval[1] = PL_nextval[0]; | |
4070 | PL_nexttype[1] = PL_nexttype[0]; | |
4071 | PL_nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
4072 | PL_nexttype[0] = THING; | |
4073 | if (PL_nexttoke == 1) { | |
4074 | PL_lex_defer = PL_lex_state; | |
4075 | PL_lex_expect = PL_expect; | |
4076 | PL_lex_state = LEX_KNOWNEXT; | |
4633a7c4 | 4077 | } |
3280af22 | 4078 | PL_lex_stuff = Nullsv; |
4633a7c4 | 4079 | } |
79072805 | 4080 | |
3280af22 NIS |
4081 | if (*SvPV(PL_subname,PL_na) == '?') { |
4082 | sv_setpv(PL_subname,"__ANON__"); | |
4633a7c4 LW |
4083 | TOKEN(ANONSUB); |
4084 | } | |
4085 | PREBLOCK(SUB); | |
79072805 LW |
4086 | |
4087 | case KEY_system: | |
4088 | set_csh(); | |
a0d0e21e | 4089 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4090 | |
4091 | case KEY_symlink: | |
a0d0e21e | 4092 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4093 | |
4094 | case KEY_syscall: | |
a0d0e21e | 4095 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4096 | |
c07a80fd | 4097 | case KEY_sysopen: |
4098 | LOP(OP_SYSOPEN,XTERM); | |
4099 | ||
137443ea | 4100 | case KEY_sysseek: |
4101 | LOP(OP_SYSSEEK,XTERM); | |
4102 | ||
79072805 | 4103 | case KEY_sysread: |
a0d0e21e | 4104 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4105 | |
4106 | case KEY_syswrite: | |
a0d0e21e | 4107 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4108 | |
4109 | case KEY_tr: | |
4110 | s = scan_trans(s); | |
4111 | TERM(sublex_start()); | |
4112 | ||
4113 | case KEY_tell: | |
4114 | UNI(OP_TELL); | |
4115 | ||
4116 | case KEY_telldir: | |
4117 | UNI(OP_TELLDIR); | |
4118 | ||
463ee0b2 | 4119 | case KEY_tie: |
a0d0e21e | 4120 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4121 | |
c07a80fd | 4122 | case KEY_tied: |
4123 | UNI(OP_TIED); | |
4124 | ||
79072805 LW |
4125 | case KEY_time: |
4126 | FUN0(OP_TIME); | |
4127 | ||
4128 | case KEY_times: | |
4129 | FUN0(OP_TMS); | |
4130 | ||
4131 | case KEY_truncate: | |
a0d0e21e | 4132 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4133 | |
4134 | case KEY_uc: | |
4135 | UNI(OP_UC); | |
4136 | ||
4137 | case KEY_ucfirst: | |
4138 | UNI(OP_UCFIRST); | |
4139 | ||
463ee0b2 LW |
4140 | case KEY_untie: |
4141 | UNI(OP_UNTIE); | |
4142 | ||
79072805 | 4143 | case KEY_until: |
3280af22 | 4144 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4145 | OPERATOR(UNTIL); |
4146 | ||
4147 | case KEY_unless: | |
3280af22 | 4148 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4149 | OPERATOR(UNLESS); |
4150 | ||
4151 | case KEY_unlink: | |
a0d0e21e | 4152 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4153 | |
4154 | case KEY_undef: | |
4155 | UNI(OP_UNDEF); | |
4156 | ||
4157 | case KEY_unpack: | |
a0d0e21e | 4158 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4159 | |
4160 | case KEY_utime: | |
a0d0e21e | 4161 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4162 | |
4163 | case KEY_umask: | |
599cee73 | 4164 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4165 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
4166 | if (*d != '0' && isDIGIT(*d)) |
4167 | yywarn("umask: argument is missing initial 0"); | |
4168 | } | |
79072805 LW |
4169 | UNI(OP_UMASK); |
4170 | ||
4171 | case KEY_unshift: | |
a0d0e21e LW |
4172 | LOP(OP_UNSHIFT,XTERM); |
4173 | ||
4174 | case KEY_use: | |
3280af22 | 4175 | if (PL_expect != XSTATE) |
a0d0e21e | 4176 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4177 | s = skipspace(s); |
4178 | if(isDIGIT(*s)) { | |
4179 | s = force_version(s); | |
4180 | if(*s == ';' || (s = skipspace(s), *s == ';')) { | |
3280af22 | 4181 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4182 | force_next(WORD); |
4183 | } | |
4184 | } | |
4185 | else { | |
4186 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4187 | s = force_version(s); | |
4188 | } | |
a0d0e21e LW |
4189 | yylval.ival = 1; |
4190 | OPERATOR(USE); | |
79072805 LW |
4191 | |
4192 | case KEY_values: | |
4193 | UNI(OP_VALUES); | |
4194 | ||
4195 | case KEY_vec: | |
3280af22 | 4196 | PL_sawvec = TRUE; |
a0d0e21e | 4197 | LOP(OP_VEC,XTERM); |
79072805 LW |
4198 | |
4199 | case KEY_while: | |
3280af22 | 4200 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4201 | OPERATOR(WHILE); |
4202 | ||
4203 | case KEY_warn: | |
3280af22 | 4204 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4205 | LOP(OP_WARN,XTERM); |
79072805 LW |
4206 | |
4207 | case KEY_wait: | |
4208 | FUN0(OP_WAIT); | |
4209 | ||
4210 | case KEY_waitpid: | |
a0d0e21e | 4211 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4212 | |
4213 | case KEY_wantarray: | |
4214 | FUN0(OP_WANTARRAY); | |
4215 | ||
4216 | case KEY_write: | |
9d116dd7 JH |
4217 | #ifdef EBCDIC |
4218 | { | |
4219 | static char ctl_l[2]; | |
4220 | ||
4221 | if (ctl_l[0] == '\0') | |
4222 | ctl_l[0] = toCTRL('L'); | |
4223 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4224 | } | |
4225 | #else | |
4226 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4227 | #endif | |
79072805 LW |
4228 | UNI(OP_ENTERWRITE); |
4229 | ||
4230 | case KEY_x: | |
3280af22 | 4231 | if (PL_expect == XOPERATOR) |
79072805 LW |
4232 | Mop(OP_REPEAT); |
4233 | check_uni(); | |
4234 | goto just_a_word; | |
4235 | ||
a0d0e21e LW |
4236 | case KEY_xor: |
4237 | yylval.ival = OP_XOR; | |
4238 | OPERATOR(OROP); | |
4239 | ||
79072805 LW |
4240 | case KEY_y: |
4241 | s = scan_trans(s); | |
4242 | TERM(sublex_start()); | |
4243 | } | |
49dc05e3 | 4244 | }} |
79072805 LW |
4245 | } |
4246 | ||
4247 | I32 | |
8ac85365 | 4248 | keyword(register char *d, I32 len) |
79072805 LW |
4249 | { |
4250 | switch (*d) { | |
4251 | case '_': | |
4252 | if (d[1] == '_') { | |
a0d0e21e | 4253 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4254 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4255 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4256 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4257 | if (strEQ(d,"__END__")) return KEY___END__; |
4258 | } | |
4259 | break; | |
8990e307 LW |
4260 | case 'A': |
4261 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4262 | break; | |
79072805 | 4263 | case 'a': |
463ee0b2 LW |
4264 | switch (len) { |
4265 | case 3: | |
a0d0e21e LW |
4266 | if (strEQ(d,"and")) return -KEY_and; |
4267 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4268 | break; |
463ee0b2 | 4269 | case 5: |
a0d0e21e LW |
4270 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4271 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4272 | break; |
4273 | case 6: | |
a0d0e21e | 4274 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4275 | break; |
4276 | } | |
79072805 LW |
4277 | break; |
4278 | case 'B': | |
4279 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4280 | break; |
79072805 | 4281 | case 'b': |
a0d0e21e LW |
4282 | if (strEQ(d,"bless")) return -KEY_bless; |
4283 | if (strEQ(d,"bind")) return -KEY_bind; | |
4284 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4285 | break; | |
4286 | case 'C': | |
4287 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4288 | break; |
4289 | case 'c': | |
4290 | switch (len) { | |
4291 | case 3: | |
a0d0e21e LW |
4292 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4293 | if (strEQ(d,"chr")) return -KEY_chr; | |
4294 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4295 | break; |
4296 | case 4: | |
4297 | if (strEQ(d,"chop")) return KEY_chop; | |
4298 | break; | |
4299 | case 5: | |
a0d0e21e LW |
4300 | if (strEQ(d,"close")) return -KEY_close; |
4301 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4302 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4303 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4304 | if (strEQ(d,"chown")) return -KEY_chown; | |
4305 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4306 | break; |
4307 | case 6: | |
a0d0e21e LW |
4308 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4309 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4310 | break; |
4311 | case 7: | |
a0d0e21e | 4312 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4313 | break; |
4314 | case 8: | |
a0d0e21e LW |
4315 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4316 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4317 | break; |
4318 | } | |
4319 | break; | |
ed6116ce LW |
4320 | case 'D': |
4321 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4322 | break; | |
79072805 LW |
4323 | case 'd': |
4324 | switch (len) { | |
4325 | case 2: | |
4326 | if (strEQ(d,"do")) return KEY_do; | |
4327 | break; | |
4328 | case 3: | |
a0d0e21e | 4329 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4330 | break; |
4331 | case 4: | |
a0d0e21e | 4332 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4333 | break; |
4334 | case 6: | |
4335 | if (strEQ(d,"delete")) return KEY_delete; | |
4336 | break; | |
4337 | case 7: | |
4338 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4339 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4340 | break; |
4341 | case 8: | |
a0d0e21e | 4342 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4343 | break; |
4344 | } | |
4345 | break; | |
4346 | case 'E': | |
a0d0e21e | 4347 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4348 | if (strEQ(d,"END")) return KEY_END; |
4349 | break; | |
4350 | case 'e': | |
4351 | switch (len) { | |
4352 | case 2: | |
a0d0e21e | 4353 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4354 | break; |
4355 | case 3: | |
a0d0e21e LW |
4356 | if (strEQ(d,"eof")) return -KEY_eof; |
4357 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4358 | break; |
4359 | case 4: | |
4360 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4361 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4362 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4363 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4364 | if (strEQ(d,"each")) return KEY_each; |
4365 | break; | |
4366 | case 5: | |
4367 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4368 | break; | |
a0d0e21e LW |
4369 | case 6: |
4370 | if (strEQ(d,"exists")) return KEY_exists; | |
4633a7c4 | 4371 | if (strEQ(d,"elseif")) warn("elseif should be elsif"); |
a0d0e21e | 4372 | break; |
79072805 | 4373 | case 8: |
a0d0e21e LW |
4374 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4375 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4376 | break; |
4377 | case 9: | |
a0d0e21e | 4378 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4379 | break; |
4380 | case 10: | |
a0d0e21e LW |
4381 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4382 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4383 | break; |
4384 | case 11: | |
a0d0e21e | 4385 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4386 | break; |
a687059c | 4387 | } |
a687059c | 4388 | break; |
79072805 LW |
4389 | case 'f': |
4390 | switch (len) { | |
4391 | case 3: | |
4392 | if (strEQ(d,"for")) return KEY_for; | |
4393 | break; | |
4394 | case 4: | |
a0d0e21e | 4395 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
4396 | break; |
4397 | case 5: | |
a0d0e21e LW |
4398 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
4399 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
4400 | break; |
4401 | case 6: | |
4402 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 4403 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
4404 | break; |
4405 | case 7: | |
4406 | if (strEQ(d,"foreach")) return KEY_foreach; | |
4407 | break; | |
4408 | case 8: | |
a0d0e21e | 4409 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 4410 | break; |
378cc40b | 4411 | } |
a687059c | 4412 | break; |
79072805 LW |
4413 | case 'G': |
4414 | if (len == 2) { | |
a0d0e21e LW |
4415 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
4416 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 4417 | } |
a687059c | 4418 | break; |
79072805 | 4419 | case 'g': |
a687059c LW |
4420 | if (strnEQ(d,"get",3)) { |
4421 | d += 3; | |
4422 | if (*d == 'p') { | |
79072805 LW |
4423 | switch (len) { |
4424 | case 7: | |
a0d0e21e LW |
4425 | if (strEQ(d,"ppid")) return -KEY_getppid; |
4426 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
4427 | break; |
4428 | case 8: | |
a0d0e21e LW |
4429 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
4430 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
4431 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
4432 | break; |
4433 | case 11: | |
a0d0e21e LW |
4434 | if (strEQ(d,"peername")) return -KEY_getpeername; |
4435 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
4436 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
4437 | break; |
4438 | case 14: | |
a0d0e21e | 4439 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
4440 | break; |
4441 | case 16: | |
a0d0e21e | 4442 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
4443 | break; |
4444 | } | |
a687059c LW |
4445 | } |
4446 | else if (*d == 'h') { | |
a0d0e21e LW |
4447 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
4448 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
4449 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
4450 | } |
4451 | else if (*d == 'n') { | |
a0d0e21e LW |
4452 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
4453 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
4454 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
4455 | } |
4456 | else if (*d == 's') { | |
a0d0e21e LW |
4457 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
4458 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
4459 | if (strEQ(d,"servent")) return -KEY_getservent; | |
4460 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
4461 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
4462 | } |
4463 | else if (*d == 'g') { | |
a0d0e21e LW |
4464 | if (strEQ(d,"grent")) return -KEY_getgrent; |
4465 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
4466 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
4467 | } |
4468 | else if (*d == 'l') { | |
a0d0e21e | 4469 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 4470 | } |
a0d0e21e | 4471 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 4472 | break; |
a687059c | 4473 | } |
79072805 LW |
4474 | switch (len) { |
4475 | case 2: | |
a0d0e21e LW |
4476 | if (strEQ(d,"gt")) return -KEY_gt; |
4477 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
4478 | break; |
4479 | case 4: | |
4480 | if (strEQ(d,"grep")) return KEY_grep; | |
4481 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 4482 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
4483 | break; |
4484 | case 6: | |
a0d0e21e | 4485 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 4486 | break; |
378cc40b | 4487 | } |
a687059c | 4488 | break; |
79072805 | 4489 | case 'h': |
a0d0e21e | 4490 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 4491 | break; |
7d07dbc2 MB |
4492 | case 'I': |
4493 | if (strEQ(d,"INIT")) return KEY_INIT; | |
4494 | break; | |
79072805 LW |
4495 | case 'i': |
4496 | switch (len) { | |
4497 | case 2: | |
4498 | if (strEQ(d,"if")) return KEY_if; | |
4499 | break; | |
4500 | case 3: | |
a0d0e21e | 4501 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
4502 | break; |
4503 | case 5: | |
a0d0e21e LW |
4504 | if (strEQ(d,"index")) return -KEY_index; |
4505 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
4506 | break; |
4507 | } | |
a687059c | 4508 | break; |
79072805 | 4509 | case 'j': |
a0d0e21e | 4510 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 4511 | break; |
79072805 LW |
4512 | case 'k': |
4513 | if (len == 4) { | |
4514 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 4515 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 4516 | } |
79072805 LW |
4517 | break; |
4518 | case 'L': | |
4519 | if (len == 2) { | |
a0d0e21e LW |
4520 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
4521 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 4522 | } |
79072805 LW |
4523 | break; |
4524 | case 'l': | |
4525 | switch (len) { | |
4526 | case 2: | |
a0d0e21e LW |
4527 | if (strEQ(d,"lt")) return -KEY_lt; |
4528 | if (strEQ(d,"le")) return -KEY_le; | |
4529 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
4530 | break; |
4531 | case 3: | |
a0d0e21e | 4532 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
4533 | break; |
4534 | case 4: | |
4535 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 4536 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 4537 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 4538 | break; |
79072805 LW |
4539 | case 5: |
4540 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 4541 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
4542 | break; |
4543 | case 6: | |
a0d0e21e LW |
4544 | if (strEQ(d,"length")) return -KEY_length; |
4545 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
4546 | break; |
4547 | case 7: | |
a0d0e21e | 4548 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
4549 | break; |
4550 | case 9: | |
a0d0e21e | 4551 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
4552 | break; |
4553 | } | |
a687059c | 4554 | break; |
79072805 LW |
4555 | case 'm': |
4556 | switch (len) { | |
4557 | case 1: return KEY_m; | |
93a17b20 LW |
4558 | case 2: |
4559 | if (strEQ(d,"my")) return KEY_my; | |
4560 | break; | |
a0d0e21e LW |
4561 | case 3: |
4562 | if (strEQ(d,"map")) return KEY_map; | |
4563 | break; | |
79072805 | 4564 | case 5: |
a0d0e21e | 4565 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
4566 | break; |
4567 | case 6: | |
a0d0e21e LW |
4568 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
4569 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
4570 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
4571 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
4572 | break; |
4573 | } | |
a687059c | 4574 | break; |
79072805 | 4575 | case 'N': |
a0d0e21e | 4576 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 4577 | break; |
79072805 LW |
4578 | case 'n': |
4579 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
4580 | if (strEQ(d,"ne")) return -KEY_ne; |
4581 | if (strEQ(d,"not")) return -KEY_not; | |
4582 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 4583 | break; |
79072805 LW |
4584 | case 'o': |
4585 | switch (len) { | |
463ee0b2 | 4586 | case 2: |
a0d0e21e | 4587 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 4588 | break; |
79072805 | 4589 | case 3: |
a0d0e21e LW |
4590 | if (strEQ(d,"ord")) return -KEY_ord; |
4591 | if (strEQ(d,"oct")) return -KEY_oct; | |
72311751 | 4592 | if (strEQ(d,"our")) { deprecate("reserved word \"our\""); |
85b81015 | 4593 | return 0;} |
79072805 LW |
4594 | break; |
4595 | case 4: | |
a0d0e21e | 4596 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
4597 | break; |
4598 | case 7: | |
a0d0e21e | 4599 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 4600 | break; |
fe14fcc3 | 4601 | } |
a687059c | 4602 | break; |
79072805 LW |
4603 | case 'p': |
4604 | switch (len) { | |
4605 | case 3: | |
4606 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 4607 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
4608 | break; |
4609 | case 4: | |
4610 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
4611 | if (strEQ(d,"pack")) return -KEY_pack; |
4612 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
4613 | break; |
4614 | case 5: | |
4615 | if (strEQ(d,"print")) return KEY_print; | |
4616 | break; | |
4617 | case 6: | |
4618 | if (strEQ(d,"printf")) return KEY_printf; | |
4619 | break; | |
4620 | case 7: | |
4621 | if (strEQ(d,"package")) return KEY_package; | |
4622 | break; | |
c07a80fd | 4623 | case 9: |
4624 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 4625 | } |
79072805 LW |
4626 | break; |
4627 | case 'q': | |
4628 | if (len <= 2) { | |
4629 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 4630 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 4631 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 4632 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 4633 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 4634 | } |
a0d0e21e | 4635 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
4636 | break; |
4637 | case 'r': | |
4638 | switch (len) { | |
4639 | case 3: | |
a0d0e21e | 4640 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
4641 | break; |
4642 | case 4: | |
a0d0e21e LW |
4643 | if (strEQ(d,"read")) return -KEY_read; |
4644 | if (strEQ(d,"rand")) return -KEY_rand; | |
4645 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
4646 | if (strEQ(d,"redo")) return KEY_redo; |
4647 | break; | |
4648 | case 5: | |
a0d0e21e LW |
4649 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
4650 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
4651 | break; |
4652 | case 6: | |
4653 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
4654 | if (strEQ(d,"rename")) return -KEY_rename; |
4655 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
4656 | break; |
4657 | case 7: | |
a0d0e21e LW |
4658 | if (strEQ(d,"require")) return -KEY_require; |
4659 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
4660 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
4661 | break; |
4662 | case 8: | |
a0d0e21e LW |
4663 | if (strEQ(d,"readlink")) return -KEY_readlink; |
4664 | if (strEQ(d,"readline")) return -KEY_readline; | |
4665 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
4666 | break; |
4667 | case 9: | |
a0d0e21e | 4668 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 4669 | break; |
a687059c | 4670 | } |
79072805 LW |
4671 | break; |
4672 | case 's': | |
a687059c | 4673 | switch (d[1]) { |
79072805 | 4674 | case 0: return KEY_s; |
a687059c | 4675 | case 'c': |
79072805 | 4676 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
4677 | break; |
4678 | case 'e': | |
79072805 LW |
4679 | switch (len) { |
4680 | case 4: | |
a0d0e21e LW |
4681 | if (strEQ(d,"seek")) return -KEY_seek; |
4682 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
4683 | break; |
4684 | case 5: | |
a0d0e21e | 4685 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
4686 | break; |
4687 | case 6: | |
a0d0e21e LW |
4688 | if (strEQ(d,"select")) return -KEY_select; |
4689 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
4690 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
4691 | break; |
4692 | case 7: | |
a0d0e21e LW |
4693 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
4694 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
4695 | break; |
4696 | case 8: | |
a0d0e21e LW |
4697 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
4698 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
4699 | break; |
4700 | case 9: | |
a0d0e21e | 4701 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
4702 | break; |
4703 | case 10: | |
a0d0e21e LW |
4704 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
4705 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
4706 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
4707 | break; |
4708 | case 11: | |
a0d0e21e LW |
4709 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
4710 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
4711 | break; |
4712 | } | |
a687059c LW |
4713 | break; |
4714 | case 'h': | |
79072805 LW |
4715 | switch (len) { |
4716 | case 5: | |
4717 | if (strEQ(d,"shift")) return KEY_shift; | |
4718 | break; | |
4719 | case 6: | |
a0d0e21e LW |
4720 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
4721 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
4722 | break; |
4723 | case 7: | |
a0d0e21e | 4724 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
4725 | break; |
4726 | case 8: | |
a0d0e21e LW |
4727 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
4728 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
4729 | break; |
4730 | } | |
a687059c LW |
4731 | break; |
4732 | case 'i': | |
a0d0e21e | 4733 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
4734 | break; |
4735 | case 'l': | |
a0d0e21e | 4736 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
4737 | break; |
4738 | case 'o': | |
79072805 | 4739 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
4740 | if (strEQ(d,"socket")) return -KEY_socket; |
4741 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
4742 | break; |
4743 | case 'p': | |
79072805 | 4744 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 4745 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 4746 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
4747 | break; |
4748 | case 'q': | |
a0d0e21e | 4749 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
4750 | break; |
4751 | case 'r': | |
a0d0e21e | 4752 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
4753 | break; |
4754 | case 't': | |
a0d0e21e | 4755 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 4756 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
4757 | break; |
4758 | case 'u': | |
a0d0e21e | 4759 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 4760 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
4761 | break; |
4762 | case 'y': | |
79072805 LW |
4763 | switch (len) { |
4764 | case 6: | |
a0d0e21e | 4765 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
4766 | break; |
4767 | case 7: | |
a0d0e21e LW |
4768 | if (strEQ(d,"symlink")) return -KEY_symlink; |
4769 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 4770 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
4771 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
4772 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
4773 | break; |
4774 | case 8: | |
a0d0e21e | 4775 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 4776 | break; |
a687059c | 4777 | } |
a687059c LW |
4778 | break; |
4779 | } | |
4780 | break; | |
79072805 LW |
4781 | case 't': |
4782 | switch (len) { | |
4783 | case 2: | |
4784 | if (strEQ(d,"tr")) return KEY_tr; | |
4785 | break; | |
463ee0b2 LW |
4786 | case 3: |
4787 | if (strEQ(d,"tie")) return KEY_tie; | |
4788 | break; | |
79072805 | 4789 | case 4: |
a0d0e21e | 4790 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 4791 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 4792 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
4793 | break; |
4794 | case 5: | |
a0d0e21e | 4795 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
4796 | break; |
4797 | case 7: | |
a0d0e21e | 4798 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
4799 | break; |
4800 | case 8: | |
a0d0e21e | 4801 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 4802 | break; |
378cc40b | 4803 | } |
a687059c | 4804 | break; |
79072805 LW |
4805 | case 'u': |
4806 | switch (len) { | |
4807 | case 2: | |
a0d0e21e LW |
4808 | if (strEQ(d,"uc")) return -KEY_uc; |
4809 | break; | |
4810 | case 3: | |
4811 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
4812 | break; |
4813 | case 5: | |
4814 | if (strEQ(d,"undef")) return KEY_undef; | |
4815 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 4816 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
4817 | if (strEQ(d,"utime")) return -KEY_utime; |
4818 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
4819 | break; |
4820 | case 6: | |
4821 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
4822 | if (strEQ(d,"unpack")) return -KEY_unpack; |
4823 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
4824 | break; |
4825 | case 7: | |
4826 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 4827 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 4828 | break; |
a687059c LW |
4829 | } |
4830 | break; | |
79072805 | 4831 | case 'v': |
a0d0e21e LW |
4832 | if (strEQ(d,"values")) return -KEY_values; |
4833 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 4834 | break; |
79072805 LW |
4835 | case 'w': |
4836 | switch (len) { | |
4837 | case 4: | |
a0d0e21e LW |
4838 | if (strEQ(d,"warn")) return -KEY_warn; |
4839 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
4840 | break; |
4841 | case 5: | |
4842 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 4843 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
4844 | break; |
4845 | case 7: | |
a0d0e21e | 4846 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
4847 | break; |
4848 | case 9: | |
a0d0e21e | 4849 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 4850 | break; |
2f3197b3 | 4851 | } |
a687059c | 4852 | break; |
79072805 | 4853 | case 'x': |
a0d0e21e LW |
4854 | if (len == 1) return -KEY_x; |
4855 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 4856 | break; |
79072805 LW |
4857 | case 'y': |
4858 | if (len == 1) return KEY_y; | |
4859 | break; | |
4860 | case 'z': | |
a687059c LW |
4861 | break; |
4862 | } | |
79072805 | 4863 | return 0; |
a687059c LW |
4864 | } |
4865 | ||
76e3520e | 4866 | STATIC void |
8ac85365 | 4867 | checkcomma(register char *s, char *name, char *what) |
a687059c | 4868 | { |
2f3197b3 LW |
4869 | char *w; |
4870 | ||
d008e5eb GS |
4871 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
4872 | dTHR; /* only for ckWARN */ | |
4873 | if (ckWARN(WARN_SYNTAX)) { | |
4874 | int level = 1; | |
4875 | for (w = s+2; *w && level; w++) { | |
4876 | if (*w == '(') | |
4877 | ++level; | |
4878 | else if (*w == ')') | |
4879 | --level; | |
4880 | } | |
4881 | if (*w) | |
4882 | for (; *w && isSPACE(*w); w++) ; | |
4883 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
4884 | warner(WARN_SYNTAX, "%s (...) interpreted as function",name); | |
4885 | } | |
2f3197b3 | 4886 | } |
3280af22 | 4887 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 4888 | s++; |
a687059c LW |
4889 | if (*s == '(') |
4890 | s++; | |
3280af22 | 4891 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 4892 | s++; |
79072805 | 4893 | if (isIDFIRST(*s)) { |
2f3197b3 | 4894 | w = s++; |
de3bb511 | 4895 | while (isALNUM(*s)) |
a687059c | 4896 | s++; |
3280af22 | 4897 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 4898 | s++; |
e929a76b | 4899 | if (*s == ',') { |
463ee0b2 | 4900 | int kw; |
e929a76b | 4901 | *s = '\0'; |
4633a7c4 | 4902 | kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0; |
e929a76b | 4903 | *s = ','; |
463ee0b2 | 4904 | if (kw) |
e929a76b | 4905 | return; |
463ee0b2 LW |
4906 | croak("No comma allowed after %s", what); |
4907 | } | |
4908 | } | |
4909 | } | |
4910 | ||
b3ac6de7 IZ |
4911 | STATIC SV * |
4912 | new_constant(char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type) | |
4913 | { | |
b3ac6de7 | 4914 | dSP; |
3280af22 | 4915 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 IZ |
4916 | BINOP myop; |
4917 | SV *res; | |
4918 | bool oldcatch = CATCH_GET; | |
4919 | SV **cvp; | |
4920 | SV *cv, *typesv; | |
4921 | char buf[128]; | |
4922 | ||
4923 | if (!table) { | |
4924 | yyerror("%^H is not defined"); | |
4925 | return sv; | |
4926 | } | |
4927 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
4928 | if (!cvp || !SvOK(*cvp)) { | |
4929 | sprintf(buf,"$^H{%s} is not defined", key); | |
4930 | yyerror(buf); | |
4931 | return sv; | |
4932 | } | |
4933 | sv_2mortal(sv); /* Parent created it permanently */ | |
4934 | cv = *cvp; | |
4935 | if (!pv) | |
4936 | pv = sv_2mortal(newSVpv(s, len)); | |
4937 | if (type) | |
4938 | typesv = sv_2mortal(newSVpv(type, 0)); | |
4939 | else | |
3280af22 | 4940 | typesv = &PL_sv_undef; |
b3ac6de7 IZ |
4941 | CATCH_SET(TRUE); |
4942 | Zero(&myop, 1, BINOP); | |
4943 | myop.op_last = (OP *) &myop; | |
4944 | myop.op_next = Nullop; | |
4945 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; | |
4946 | ||
e788e7d3 | 4947 | PUSHSTACKi(PERLSI_OVERLOAD); |
b3ac6de7 IZ |
4948 | ENTER; |
4949 | SAVEOP(); | |
533c011a | 4950 | PL_op = (OP *) &myop; |
3280af22 | 4951 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 4952 | PL_op->op_private |= OPpENTERSUB_DB; |
b3ac6de7 IZ |
4953 | PUTBACK; |
4954 | pp_pushmark(ARGS); | |
4955 | ||
25eaa213 | 4956 | EXTEND(sp, 4); |
b3ac6de7 IZ |
4957 | PUSHs(pv); |
4958 | PUSHs(sv); | |
4959 | PUSHs(typesv); | |
4960 | PUSHs(cv); | |
4961 | PUTBACK; | |
4962 | ||
533c011a | 4963 | if (PL_op = pp_entersub(ARGS)) |
b3ac6de7 IZ |
4964 | CALLRUNOPS(); |
4965 | LEAVE; | |
4966 | SPAGAIN; | |
4967 | ||
4968 | res = POPs; | |
4969 | PUTBACK; | |
4970 | CATCH_SET(oldcatch); | |
4971 | POPSTACK; | |
4972 | ||
4973 | if (!SvOK(res)) { | |
4974 | sprintf(buf,"Call to &{$^H{%s}} did not return a defined value", key); | |
4975 | yyerror(buf); | |
4976 | } | |
4977 | return SvREFCNT_inc(res); | |
4978 | } | |
4979 | ||
76e3520e | 4980 | STATIC char * |
8ac85365 | 4981 | scan_word(register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
4982 | { |
4983 | register char *d = dest; | |
8903cb82 | 4984 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 4985 | for (;;) { |
8903cb82 | 4986 | if (d >= e) |
fc36a67e | 4987 | croak(ident_too_long); |
463ee0b2 LW |
4988 | if (isALNUM(*s)) |
4989 | *d++ = *s++; | |
4990 | else if (*s == '\'' && allow_package && isIDFIRST(s[1])) { | |
4991 | *d++ = ':'; | |
4992 | *d++ = ':'; | |
4993 | s++; | |
4994 | } | |
c3e0f903 | 4995 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
4996 | *d++ = *s++; |
4997 | *d++ = *s++; | |
4998 | } | |
dfe13c55 | 4999 | else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5000 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5001 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5002 | t += UTF8SKIP(t); |
5003 | if (d + (t - s) > e) | |
5004 | croak(ident_too_long); | |
5005 | Copy(s, d, t - s, char); | |
5006 | d += t - s; | |
5007 | s = t; | |
5008 | } | |
463ee0b2 LW |
5009 | else { |
5010 | *d = '\0'; | |
5011 | *slp = d - dest; | |
5012 | return s; | |
e929a76b | 5013 | } |
378cc40b LW |
5014 | } |
5015 | } | |
5016 | ||
76e3520e | 5017 | STATIC char * |
8ac85365 | 5018 | scan_ident(register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5019 | { |
5020 | register char *d; | |
8903cb82 | 5021 | register char *e; |
79072805 | 5022 | char *bracket = 0; |
748a9306 | 5023 | char funny = *s++; |
378cc40b | 5024 | |
3280af22 NIS |
5025 | if (PL_lex_brackets == 0) |
5026 | PL_lex_fakebrack = 0; | |
a0d0e21e LW |
5027 | if (isSPACE(*s)) |
5028 | s = skipspace(s); | |
378cc40b | 5029 | d = dest; |
8903cb82 | 5030 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5031 | if (isDIGIT(*s)) { |
8903cb82 | 5032 | while (isDIGIT(*s)) { |
5033 | if (d >= e) | |
fc36a67e | 5034 | croak(ident_too_long); |
378cc40b | 5035 | *d++ = *s++; |
8903cb82 | 5036 | } |
378cc40b LW |
5037 | } |
5038 | else { | |
463ee0b2 | 5039 | for (;;) { |
8903cb82 | 5040 | if (d >= e) |
fc36a67e | 5041 | croak(ident_too_long); |
463ee0b2 LW |
5042 | if (isALNUM(*s)) |
5043 | *d++ = *s++; | |
5044 | else if (*s == '\'' && isIDFIRST(s[1])) { | |
5045 | *d++ = ':'; | |
5046 | *d++ = ':'; | |
5047 | s++; | |
5048 | } | |
a0d0e21e | 5049 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5050 | *d++ = *s++; |
5051 | *d++ = *s++; | |
5052 | } | |
dfe13c55 | 5053 | else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5054 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5055 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5056 | t += UTF8SKIP(t); |
5057 | if (d + (t - s) > e) | |
5058 | croak(ident_too_long); | |
5059 | Copy(s, d, t - s, char); | |
5060 | d += t - s; | |
5061 | s = t; | |
5062 | } | |
463ee0b2 LW |
5063 | else |
5064 | break; | |
5065 | } | |
378cc40b LW |
5066 | } |
5067 | *d = '\0'; | |
5068 | d = dest; | |
79072805 | 5069 | if (*d) { |
3280af22 NIS |
5070 | if (PL_lex_state != LEX_NORMAL) |
5071 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5072 | return s; |
378cc40b | 5073 | } |
748a9306 | 5074 | if (*s == '$' && s[1] && |
ff0cee69 | 5075 | (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5076 | { |
3280af22 | 5077 | if (isDIGIT(s[1]) && PL_lex_state == LEX_INTERPNORMAL) |
5cd24f17 | 5078 | deprecate("\"$$<digit>\" to mean \"${$}<digit>\""); |
5079 | else | |
5080 | return s; | |
5081 | } | |
79072805 LW |
5082 | if (*s == '{') { |
5083 | bracket = s; | |
5084 | s++; | |
5085 | } | |
5086 | else if (ck_uni) | |
5087 | check_uni(); | |
93a17b20 | 5088 | if (s < send) |
79072805 LW |
5089 | *d = *s++; |
5090 | d[1] = '\0'; | |
748a9306 | 5091 | if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) { |
bbce6d69 | 5092 | *d = toCTRL(*s); |
5093 | s++; | |
de3bb511 | 5094 | } |
79072805 | 5095 | if (bracket) { |
748a9306 | 5096 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5097 | while (s < send) { |
5098 | char ch = *s++; | |
5099 | if (ch != ' ' && ch != '\t') { | |
5100 | *d = ch; | |
5101 | break; | |
5102 | } | |
5103 | } | |
748a9306 | 5104 | } |
dfe13c55 | 5105 | if (isIDFIRST(*d) || (UTF && (*d & 0xc0) == 0x80 && isIDFIRST_utf8((U8*)d))) { |
79072805 | 5106 | d++; |
a0ed51b3 LW |
5107 | if (UTF) { |
5108 | e = s; | |
5109 | while (e < send && (isALNUM(*e) || ((*e & 0xc0) == 0x80 && isALNUM_utf8((U8*)e)) || *e == ':')) { | |
5110 | e += UTF8SKIP(e); | |
dfe13c55 | 5111 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5112 | e += UTF8SKIP(e); |
5113 | } | |
5114 | Copy(s, d, e - s, char); | |
5115 | d += e - s; | |
5116 | s = e; | |
5117 | } | |
5118 | else { | |
5119 | while (isALNUM(*s) || *s == ':') | |
5120 | *d++ = *s++; | |
5121 | } | |
79072805 | 5122 | *d = '\0'; |
748a9306 | 5123 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5124 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5125 | dTHR; /* only for ckWARN */ |
599cee73 | 5126 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
748a9306 | 5127 | char *brack = *s == '[' ? "[...]" : "{...}"; |
599cee73 PM |
5128 | warner(WARN_AMBIGUOUS, |
5129 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", | |
748a9306 LW |
5130 | funny, dest, brack, funny, dest, brack); |
5131 | } | |
3280af22 | 5132 | PL_lex_fakebrack = PL_lex_brackets+1; |
79072805 | 5133 | bracket++; |
3280af22 | 5134 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 LW |
5135 | return s; |
5136 | } | |
5137 | } | |
5138 | if (*s == '}') { | |
5139 | s++; | |
3280af22 NIS |
5140 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5141 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5142 | if (funny == '#') |
5143 | funny = '@'; | |
d008e5eb GS |
5144 | if (PL_lex_state == LEX_NORMAL) { |
5145 | dTHR; /* only for ckWARN */ | |
5146 | if (ckWARN(WARN_AMBIGUOUS) && | |
5147 | (keyword(dest, d - dest) || perl_get_cv(dest, FALSE))) | |
5148 | { | |
5149 | warner(WARN_AMBIGUOUS, | |
5150 | "Ambiguous use of %c{%s} resolved to %c%s", | |
5151 | funny, dest, funny, dest); | |
5152 | } | |
5153 | } | |
79072805 LW |
5154 | } |
5155 | else { | |
5156 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5157 | *dest = '\0'; |
79072805 LW |
5158 | } |
5159 | } | |
3280af22 NIS |
5160 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5161 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5162 | return s; |
5163 | } | |
5164 | ||
8ac85365 | 5165 | void pmflag(U16 *pmfl, int ch) |
a0d0e21e | 5166 | { |
bbce6d69 | 5167 | if (ch == 'i') |
a0d0e21e | 5168 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5169 | else if (ch == 'g') |
5170 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5171 | else if (ch == 'c') |
5172 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5173 | else if (ch == 'o') |
5174 | *pmfl |= PMf_KEEP; | |
5175 | else if (ch == 'm') | |
5176 | *pmfl |= PMf_MULTILINE; | |
5177 | else if (ch == 's') | |
5178 | *pmfl |= PMf_SINGLELINE; | |
5179 | else if (ch == 'x') | |
5180 | *pmfl |= PMf_EXTENDED; | |
5181 | } | |
378cc40b | 5182 | |
76e3520e | 5183 | STATIC char * |
8782bef2 | 5184 | scan_pat(char *start, I32 type) |
378cc40b | 5185 | { |
79072805 LW |
5186 | PMOP *pm; |
5187 | char *s; | |
378cc40b | 5188 | |
79072805 LW |
5189 | s = scan_str(start); |
5190 | if (!s) { | |
3280af22 NIS |
5191 | if (PL_lex_stuff) |
5192 | SvREFCNT_dec(PL_lex_stuff); | |
5193 | PL_lex_stuff = Nullsv; | |
463ee0b2 | 5194 | croak("Search pattern not terminated"); |
378cc40b | 5195 | } |
bbce6d69 | 5196 | |
8782bef2 | 5197 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5198 | if (PL_multi_open == '?') |
79072805 | 5199 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5200 | if(type == OP_QR) { |
5201 | while (*s && strchr("iomsx", *s)) | |
5202 | pmflag(&pm->op_pmflags,*s++); | |
5203 | } | |
5204 | else { | |
5205 | while (*s && strchr("iogcmsx", *s)) | |
5206 | pmflag(&pm->op_pmflags,*s++); | |
5207 | } | |
4633a7c4 | 5208 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5209 | |
3280af22 | 5210 | PL_lex_op = (OP*)pm; |
79072805 | 5211 | yylval.ival = OP_MATCH; |
378cc40b LW |
5212 | return s; |
5213 | } | |
5214 | ||
76e3520e | 5215 | STATIC char * |
8ac85365 | 5216 | scan_subst(char *start) |
79072805 | 5217 | { |
a0d0e21e | 5218 | register char *s; |
79072805 | 5219 | register PMOP *pm; |
4fdae800 | 5220 | I32 first_start; |
79072805 LW |
5221 | I32 es = 0; |
5222 | ||
79072805 LW |
5223 | yylval.ival = OP_NULL; |
5224 | ||
a0d0e21e | 5225 | s = scan_str(start); |
79072805 LW |
5226 | |
5227 | if (!s) { | |
3280af22 NIS |
5228 | if (PL_lex_stuff) |
5229 | SvREFCNT_dec(PL_lex_stuff); | |
5230 | PL_lex_stuff = Nullsv; | |
463ee0b2 | 5231 | croak("Substitution pattern not terminated"); |
a687059c | 5232 | } |
79072805 | 5233 | |
3280af22 | 5234 | if (s[-1] == PL_multi_open) |
79072805 LW |
5235 | s--; |
5236 | ||
3280af22 | 5237 | first_start = PL_multi_start; |
79072805 LW |
5238 | s = scan_str(s); |
5239 | if (!s) { | |
3280af22 NIS |
5240 | if (PL_lex_stuff) |
5241 | SvREFCNT_dec(PL_lex_stuff); | |
5242 | PL_lex_stuff = Nullsv; | |
5243 | if (PL_lex_repl) | |
5244 | SvREFCNT_dec(PL_lex_repl); | |
5245 | PL_lex_repl = Nullsv; | |
463ee0b2 | 5246 | croak("Substitution replacement not terminated"); |
a687059c | 5247 | } |
3280af22 | 5248 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5249 | |
79072805 | 5250 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5251 | while (*s) { |
a687059c LW |
5252 | if (*s == 'e') { |
5253 | s++; | |
2f3197b3 | 5254 | es++; |
a687059c | 5255 | } |
b3eb6a9b | 5256 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5257 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5258 | else |
5259 | break; | |
378cc40b | 5260 | } |
79072805 LW |
5261 | |
5262 | if (es) { | |
5263 | SV *repl; | |
5264 | pm->op_pmflags |= PMf_EVAL; | |
463ee0b2 LW |
5265 | repl = newSVpv("",0); |
5266 | while (es-- > 0) | |
a0d0e21e | 5267 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5268 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5269 | sv_catsv(repl, PL_lex_repl); |
79072805 LW |
5270 | sv_catpvn(repl, " };", 2); |
5271 | SvCOMPILED_on(repl); | |
3280af22 NIS |
5272 | SvREFCNT_dec(PL_lex_repl); |
5273 | PL_lex_repl = repl; | |
378cc40b | 5274 | } |
79072805 | 5275 | |
4633a7c4 | 5276 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5277 | PL_lex_op = (OP*)pm; |
79072805 | 5278 | yylval.ival = OP_SUBST; |
378cc40b LW |
5279 | return s; |
5280 | } | |
5281 | ||
76e3520e | 5282 | STATIC char * |
8ac85365 | 5283 | scan_trans(char *start) |
378cc40b | 5284 | { |
a0d0e21e | 5285 | register char* s; |
11343788 | 5286 | OP *o; |
79072805 LW |
5287 | short *tbl; |
5288 | I32 squash; | |
a0ed51b3 | 5289 | I32 del; |
79072805 | 5290 | I32 complement; |
a0ed51b3 LW |
5291 | I32 utf8; |
5292 | I32 count = 0; | |
79072805 LW |
5293 | |
5294 | yylval.ival = OP_NULL; | |
5295 | ||
a0d0e21e | 5296 | s = scan_str(start); |
79072805 | 5297 | if (!s) { |
3280af22 NIS |
5298 | if (PL_lex_stuff) |
5299 | SvREFCNT_dec(PL_lex_stuff); | |
5300 | PL_lex_stuff = Nullsv; | |
2c268ad5 | 5301 | croak("Transliteration pattern not terminated"); |
a687059c | 5302 | } |
3280af22 | 5303 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5304 | s--; |
5305 | ||
93a17b20 | 5306 | s = scan_str(s); |
79072805 | 5307 | if (!s) { |
3280af22 NIS |
5308 | if (PL_lex_stuff) |
5309 | SvREFCNT_dec(PL_lex_stuff); | |
5310 | PL_lex_stuff = Nullsv; | |
5311 | if (PL_lex_repl) | |
5312 | SvREFCNT_dec(PL_lex_repl); | |
5313 | PL_lex_repl = Nullsv; | |
2c268ad5 | 5314 | croak("Transliteration replacement not terminated"); |
a687059c | 5315 | } |
79072805 | 5316 | |
a0ed51b3 LW |
5317 | if (UTF) { |
5318 | o = newSVOP(OP_TRANS, 0, 0); | |
5319 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5320 | } | |
5321 | else { | |
5322 | New(803,tbl,256,short); | |
5323 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5324 | utf8 = 0; | |
5325 | } | |
2f3197b3 | 5326 | |
a0ed51b3 LW |
5327 | complement = del = squash = 0; |
5328 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5329 | if (*s == 'c') |
79072805 | 5330 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5331 | else if (*s == 'd') |
a0ed51b3 LW |
5332 | del = OPpTRANS_DELETE; |
5333 | else if (*s == 's') | |
79072805 | 5334 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5335 | else { |
5336 | switch (count++) { | |
5337 | case 0: | |
5338 | if (*s == 'C') | |
5339 | utf8 &= ~OPpTRANS_FROM_UTF; | |
5340 | else | |
5341 | utf8 |= OPpTRANS_FROM_UTF; | |
5342 | break; | |
5343 | case 1: | |
5344 | if (*s == 'C') | |
5345 | utf8 &= ~OPpTRANS_TO_UTF; | |
5346 | else | |
5347 | utf8 |= OPpTRANS_TO_UTF; | |
5348 | break; | |
5349 | default: | |
5350 | croak("Too many /C and /U options"); | |
5351 | } | |
5352 | } | |
395c3793 LW |
5353 | s++; |
5354 | } | |
a0ed51b3 | 5355 | o->op_private = del|squash|complement|utf8; |
79072805 | 5356 | |
3280af22 | 5357 | PL_lex_op = o; |
79072805 LW |
5358 | yylval.ival = OP_TRANS; |
5359 | return s; | |
5360 | } | |
5361 | ||
76e3520e | 5362 | STATIC char * |
8ac85365 | 5363 | scan_heredoc(register char *s) |
79072805 | 5364 | { |
11343788 | 5365 | dTHR; |
79072805 LW |
5366 | SV *herewas; |
5367 | I32 op_type = OP_SCALAR; | |
5368 | I32 len; | |
5369 | SV *tmpstr; | |
5370 | char term; | |
5371 | register char *d; | |
fc36a67e | 5372 | register char *e; |
4633a7c4 | 5373 | char *peek; |
3280af22 | 5374 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
5375 | |
5376 | s += 2; | |
3280af22 NIS |
5377 | d = PL_tokenbuf; |
5378 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 5379 | if (!outer) |
79072805 | 5380 | *d++ = '\n'; |
4633a7c4 LW |
5381 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
5382 | if (*peek && strchr("`'\"",*peek)) { | |
5383 | s = peek; | |
79072805 | 5384 | term = *s++; |
3280af22 | 5385 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 5386 | d += len; |
3280af22 | 5387 | if (s < PL_bufend) |
79072805 | 5388 | s++; |
79072805 LW |
5389 | } |
5390 | else { | |
5391 | if (*s == '\\') | |
5392 | s++, term = '\''; | |
5393 | else | |
5394 | term = '"'; | |
4633a7c4 LW |
5395 | if (!isALNUM(*s)) |
5396 | deprecate("bare << to mean <<\"\""); | |
fc36a67e | 5397 | for (; isALNUM(*s); s++) { |
5398 | if (d < e) | |
5399 | *d++ = *s; | |
5400 | } | |
5401 | } | |
3280af22 | 5402 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
fc36a67e | 5403 | croak("Delimiter for here document is too long"); |
79072805 LW |
5404 | *d++ = '\n'; |
5405 | *d = '\0'; | |
3280af22 | 5406 | len = d - PL_tokenbuf; |
6a27c188 | 5407 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
5408 | d = strchr(s, '\r'); |
5409 | if (d) { | |
5410 | char *olds = s; | |
5411 | s = d; | |
3280af22 | 5412 | while (s < PL_bufend) { |
f63a84b2 LW |
5413 | if (*s == '\r') { |
5414 | *d++ = '\n'; | |
5415 | if (*++s == '\n') | |
5416 | s++; | |
5417 | } | |
5418 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
5419 | *d++ = *s++; | |
5420 | s++; | |
5421 | } | |
5422 | else | |
5423 | *d++ = *s++; | |
5424 | } | |
5425 | *d = '\0'; | |
3280af22 NIS |
5426 | PL_bufend = d; |
5427 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
5428 | s = olds; |
5429 | } | |
5430 | #endif | |
79072805 | 5431 | d = "\n"; |
3280af22 NIS |
5432 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
5433 | herewas = newSVpv(s,PL_bufend-s); | |
79072805 LW |
5434 | else |
5435 | s--, herewas = newSVpv(s,d-s); | |
5436 | s += SvCUR(herewas); | |
748a9306 | 5437 | |
8d6dde3e | 5438 | tmpstr = NEWSV(87,79); |
748a9306 LW |
5439 | sv_upgrade(tmpstr, SVt_PVIV); |
5440 | if (term == '\'') { | |
79072805 | 5441 | op_type = OP_CONST; |
748a9306 LW |
5442 | SvIVX(tmpstr) = -1; |
5443 | } | |
5444 | else if (term == '`') { | |
79072805 | 5445 | op_type = OP_BACKTICK; |
748a9306 LW |
5446 | SvIVX(tmpstr) = '\\'; |
5447 | } | |
79072805 LW |
5448 | |
5449 | CLINE; | |
3280af22 NIS |
5450 | PL_multi_start = PL_curcop->cop_line; |
5451 | PL_multi_open = PL_multi_close = '<'; | |
5452 | term = *PL_tokenbuf; | |
fd2d0953 | 5453 | if (!outer) { |
79072805 | 5454 | d = s; |
3280af22 NIS |
5455 | while (s < PL_bufend && |
5456 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 5457 | if (*s++ == '\n') |
3280af22 | 5458 | PL_curcop->cop_line++; |
79072805 | 5459 | } |
3280af22 NIS |
5460 | if (s >= PL_bufend) { |
5461 | PL_curcop->cop_line = PL_multi_start; | |
5462 | missingterm(PL_tokenbuf); | |
79072805 LW |
5463 | } |
5464 | sv_setpvn(tmpstr,d+1,s-d); | |
5465 | s += len - 1; | |
3280af22 | 5466 | PL_curcop->cop_line++; /* the preceding stmt passes a newline */ |
49d8d3a1 | 5467 | |
3280af22 NIS |
5468 | sv_catpvn(herewas,s,PL_bufend-s); |
5469 | sv_setsv(PL_linestr,herewas); | |
5470 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
5471 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
5472 | } |
5473 | else | |
5474 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 5475 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 5476 | if (!outer || |
3280af22 NIS |
5477 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
5478 | PL_curcop->cop_line = PL_multi_start; | |
5479 | missingterm(PL_tokenbuf); | |
79072805 | 5480 | } |
3280af22 NIS |
5481 | PL_curcop->cop_line++; |
5482 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
6a27c188 | 5483 | #ifndef PERL_STRICT_CR |
3280af22 | 5484 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
5485 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
5486 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 5487 | { |
3280af22 NIS |
5488 | PL_bufend[-2] = '\n'; |
5489 | PL_bufend--; | |
5490 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 5491 | } |
3280af22 NIS |
5492 | else if (PL_bufend[-1] == '\r') |
5493 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 5494 | } |
3280af22 NIS |
5495 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
5496 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 5497 | #endif |
3280af22 | 5498 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
5499 | SV *sv = NEWSV(88,0); |
5500 | ||
93a17b20 | 5501 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
5502 | sv_setsv(sv,PL_linestr); |
5503 | av_store(GvAV(PL_curcop->cop_filegv), | |
5504 | (I32)PL_curcop->cop_line,sv); | |
79072805 | 5505 | } |
3280af22 NIS |
5506 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
5507 | s = PL_bufend - 1; | |
79072805 | 5508 | *s = ' '; |
3280af22 NIS |
5509 | sv_catsv(PL_linestr,herewas); |
5510 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
5511 | } |
5512 | else { | |
3280af22 NIS |
5513 | s = PL_bufend; |
5514 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
5515 | } |
5516 | } | |
3280af22 | 5517 | PL_multi_end = PL_curcop->cop_line; |
79072805 LW |
5518 | s++; |
5519 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { | |
5520 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 5521 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 5522 | } |
8990e307 | 5523 | SvREFCNT_dec(herewas); |
3280af22 | 5524 | PL_lex_stuff = tmpstr; |
79072805 LW |
5525 | yylval.ival = op_type; |
5526 | return s; | |
5527 | } | |
5528 | ||
02aa26ce NT |
5529 | /* scan_inputsymbol |
5530 | takes: current position in input buffer | |
5531 | returns: new position in input buffer | |
5532 | side-effects: yylval and lex_op are set. | |
5533 | ||
5534 | This code handles: | |
5535 | ||
5536 | <> read from ARGV | |
5537 | <FH> read from filehandle | |
5538 | <pkg::FH> read from package qualified filehandle | |
5539 | <pkg'FH> read from package qualified filehandle | |
5540 | <$fh> read from filehandle in $fh | |
5541 | <*.h> filename glob | |
5542 | ||
5543 | */ | |
5544 | ||
76e3520e | 5545 | STATIC char * |
8ac85365 | 5546 | scan_inputsymbol(char *start) |
79072805 | 5547 | { |
02aa26ce | 5548 | register char *s = start; /* current position in buffer */ |
79072805 | 5549 | register char *d; |
fc36a67e | 5550 | register char *e; |
79072805 LW |
5551 | I32 len; |
5552 | ||
3280af22 NIS |
5553 | d = PL_tokenbuf; /* start of temp holding space */ |
5554 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
5555 | s = delimcpy(d, e, s + 1, PL_bufend, '>', &len); /* extract until > */ | |
02aa26ce NT |
5556 | |
5557 | /* die if we didn't have space for the contents of the <>, | |
5558 | or if it didn't end | |
5559 | */ | |
5560 | ||
3280af22 | 5561 | if (len >= sizeof PL_tokenbuf) |
fc36a67e | 5562 | croak("Excessively long <> operator"); |
3280af22 | 5563 | if (s >= PL_bufend) |
463ee0b2 | 5564 | croak("Unterminated <> operator"); |
02aa26ce | 5565 | |
fc36a67e | 5566 | s++; |
02aa26ce NT |
5567 | |
5568 | /* check for <$fh> | |
5569 | Remember, only scalar variables are interpreted as filehandles by | |
5570 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
5571 | treated as a glob() call. | |
5572 | This code makes use of the fact that except for the $ at the front, | |
5573 | a scalar variable and a filehandle look the same. | |
5574 | */ | |
4633a7c4 | 5575 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
5576 | |
5577 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
a0d0e21e | 5578 | while (*d && (isALNUM(*d) || *d == '\'' || *d == ':')) |
79072805 | 5579 | d++; |
02aa26ce NT |
5580 | |
5581 | /* If we've tried to read what we allow filehandles to look like, and | |
5582 | there's still text left, then it must be a glob() and not a getline. | |
5583 | Use scan_str to pull out the stuff between the <> and treat it | |
5584 | as nothing more than a string. | |
5585 | */ | |
5586 | ||
3280af22 | 5587 | if (d - PL_tokenbuf != len) { |
79072805 LW |
5588 | yylval.ival = OP_GLOB; |
5589 | set_csh(); | |
5590 | s = scan_str(start); | |
5591 | if (!s) | |
02aa26ce | 5592 | croak("Glob not terminated"); |
79072805 LW |
5593 | return s; |
5594 | } | |
395c3793 | 5595 | else { |
02aa26ce | 5596 | /* we're in a filehandle read situation */ |
3280af22 | 5597 | d = PL_tokenbuf; |
02aa26ce NT |
5598 | |
5599 | /* turn <> into <ARGV> */ | |
79072805 LW |
5600 | if (!len) |
5601 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
5602 | |
5603 | /* if <$fh>, create the ops to turn the variable into a | |
5604 | filehandle | |
5605 | */ | |
79072805 | 5606 | if (*d == '$') { |
a0d0e21e | 5607 | I32 tmp; |
02aa26ce NT |
5608 | |
5609 | /* try to find it in the pad for this block, otherwise find | |
5610 | add symbol table ops | |
5611 | */ | |
11343788 MB |
5612 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
5613 | OP *o = newOP(OP_PADSV, 0); | |
5614 | o->op_targ = tmp; | |
3280af22 | 5615 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o)); |
a0d0e21e LW |
5616 | } |
5617 | else { | |
5618 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 5619 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e LW |
5620 | newUNOP(OP_RV2GV, 0, |
5621 | newUNOP(OP_RV2SV, 0, | |
5622 | newGVOP(OP_GV, 0, gv)))); | |
5623 | } | |
02aa26ce | 5624 | /* we created the ops in lex_op, so make yylval.ival a null op */ |
79072805 LW |
5625 | yylval.ival = OP_NULL; |
5626 | } | |
02aa26ce NT |
5627 | |
5628 | /* If it's none of the above, it must be a literal filehandle | |
5629 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 5630 | else { |
85e6fe83 | 5631 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 5632 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
5633 | yylval.ival = OP_NULL; |
5634 | } | |
5635 | } | |
02aa26ce | 5636 | |
79072805 LW |
5637 | return s; |
5638 | } | |
5639 | ||
02aa26ce NT |
5640 | |
5641 | /* scan_str | |
5642 | takes: start position in buffer | |
5643 | returns: position to continue reading from buffer | |
5644 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
5645 | updates the read buffer. | |
5646 | ||
5647 | This subroutine pulls a string out of the input. It is called for: | |
5648 | q single quotes q(literal text) | |
5649 | ' single quotes 'literal text' | |
5650 | qq double quotes qq(interpolate $here please) | |
5651 | " double quotes "interpolate $here please" | |
5652 | qx backticks qx(/bin/ls -l) | |
5653 | ` backticks `/bin/ls -l` | |
5654 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
5655 | m// regexp match m/this/ | |
5656 | s/// regexp substitute s/this/that/ | |
5657 | tr/// string transliterate tr/this/that/ | |
5658 | y/// string transliterate y/this/that/ | |
5659 | ($*@) sub prototypes sub foo ($) | |
5660 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> | |
5661 | ||
5662 | In most of these cases (all but <>, patterns and transliterate) | |
5663 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
5664 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
5665 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
5666 | calls scan_str(). | |
5667 | ||
5668 | It skips whitespace before the string starts, and treats the first | |
5669 | character as the delimiter. If the delimiter is one of ([{< then | |
5670 | the corresponding "close" character )]}> is used as the closing | |
5671 | delimiter. It allows quoting of delimiters, and if the string has | |
5672 | balanced delimiters ([{<>}]) it allows nesting. | |
5673 | ||
5674 | The lexer always reads these strings into lex_stuff, except in the | |
5675 | case of the operators which take *two* arguments (s/// and tr///) | |
5676 | when it checks to see if lex_stuff is full (presumably with the 1st | |
5677 | arg to s or tr) and if so puts the string into lex_repl. | |
5678 | ||
5679 | */ | |
5680 | ||
76e3520e | 5681 | STATIC char * |
8ac85365 | 5682 | scan_str(char *start) |
79072805 | 5683 | { |
11343788 | 5684 | dTHR; |
02aa26ce NT |
5685 | SV *sv; /* scalar value: string */ |
5686 | char *tmps; /* temp string, used for delimiter matching */ | |
5687 | register char *s = start; /* current position in the buffer */ | |
5688 | register char term; /* terminating character */ | |
5689 | register char *to; /* current position in the sv's data */ | |
5690 | I32 brackets = 1; /* bracket nesting level */ | |
5691 | ||
5692 | /* skip space before the delimiter */ | |
fb73857a | 5693 | if (isSPACE(*s)) |
5694 | s = skipspace(s); | |
02aa26ce NT |
5695 | |
5696 | /* mark where we are, in case we need to report errors */ | |
79072805 | 5697 | CLINE; |
02aa26ce NT |
5698 | |
5699 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 5700 | term = *s; |
02aa26ce | 5701 | /* mark where we are */ |
3280af22 NIS |
5702 | PL_multi_start = PL_curcop->cop_line; |
5703 | PL_multi_open = term; | |
02aa26ce NT |
5704 | |
5705 | /* find corresponding closing delimiter */ | |
93a17b20 | 5706 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 5707 | term = tmps[5]; |
3280af22 | 5708 | PL_multi_close = term; |
79072805 | 5709 | |
02aa26ce | 5710 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
5711 | assuming. 79 is the SV's initial length. What a random number. */ |
5712 | sv = NEWSV(87,79); | |
ed6116ce LW |
5713 | sv_upgrade(sv, SVt_PVIV); |
5714 | SvIVX(sv) = term; | |
a0d0e21e | 5715 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
5716 | |
5717 | /* move past delimiter and try to read a complete string */ | |
93a17b20 LW |
5718 | s++; |
5719 | for (;;) { | |
02aa26ce | 5720 | /* extend sv if need be */ |
3280af22 | 5721 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 5722 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 5723 | to = SvPVX(sv)+SvCUR(sv); |
02aa26ce NT |
5724 | |
5725 | /* if open delimiter is the close delimiter read unbridle */ | |
3280af22 NIS |
5726 | if (PL_multi_open == PL_multi_close) { |
5727 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 5728 | /* embedded newlines increment the current line number */ |
3280af22 NIS |
5729 | if (*s == '\n' && !PL_rsfp) |
5730 | PL_curcop->cop_line++; | |
02aa26ce | 5731 | /* handle quoted delimiters */ |
3280af22 | 5732 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
a0d0e21e LW |
5733 | if (s[1] == term) |
5734 | s++; | |
02aa26ce | 5735 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
5736 | else |
5737 | *to++ = *s++; | |
5738 | } | |
02aa26ce NT |
5739 | /* terminate when run out of buffer (the for() condition), or |
5740 | have found the terminator */ | |
93a17b20 LW |
5741 | else if (*s == term) |
5742 | break; | |
5743 | *to = *s; | |
5744 | } | |
5745 | } | |
02aa26ce NT |
5746 | |
5747 | /* if the terminator isn't the same as the start character (e.g., | |
5748 | matched brackets), we have to allow more in the quoting, and | |
5749 | be prepared for nested brackets. | |
5750 | */ | |
93a17b20 | 5751 | else { |
02aa26ce | 5752 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 5753 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 5754 | /* embedded newlines increment the line count */ |
3280af22 NIS |
5755 | if (*s == '\n' && !PL_rsfp) |
5756 | PL_curcop->cop_line++; | |
02aa26ce | 5757 | /* backslashes can escape the open or closing characters */ |
3280af22 NIS |
5758 | if (*s == '\\' && s+1 < PL_bufend) { |
5759 | if ((s[1] == PL_multi_open) || (s[1] == PL_multi_close)) | |
a0d0e21e LW |
5760 | s++; |
5761 | else | |
5762 | *to++ = *s++; | |
5763 | } | |
02aa26ce | 5764 | /* allow nested opens and closes */ |
3280af22 | 5765 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 5766 | break; |
3280af22 | 5767 | else if (*s == PL_multi_open) |
93a17b20 LW |
5768 | brackets++; |
5769 | *to = *s; | |
5770 | } | |
5771 | } | |
02aa26ce | 5772 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 5773 | *to = '\0'; |
463ee0b2 | 5774 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 5775 | |
02aa26ce NT |
5776 | /* |
5777 | * this next chunk reads more into the buffer if we're not done yet | |
5778 | */ | |
5779 | ||
3280af22 | 5780 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 5781 | |
6a27c188 | 5782 | #ifndef PERL_STRICT_CR |
f63a84b2 | 5783 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
5784 | if ((to[-2] == '\r' && to[-1] == '\n') || |
5785 | (to[-2] == '\n' && to[-1] == '\r')) | |
5786 | { | |
f63a84b2 LW |
5787 | to[-2] = '\n'; |
5788 | to--; | |
5789 | SvCUR_set(sv, to - SvPVX(sv)); | |
5790 | } | |
5791 | else if (to[-1] == '\r') | |
5792 | to[-1] = '\n'; | |
5793 | } | |
5794 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
5795 | to[-1] = '\n'; | |
5796 | #endif | |
5797 | ||
02aa26ce NT |
5798 | /* if we're out of file, or a read fails, bail and reset the current |
5799 | line marker so we can report where the unterminated string began | |
5800 | */ | |
3280af22 NIS |
5801 | if (!PL_rsfp || |
5802 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 5803 | sv_free(sv); |
3280af22 | 5804 | PL_curcop->cop_line = PL_multi_start; |
79072805 LW |
5805 | return Nullch; |
5806 | } | |
02aa26ce | 5807 | /* we read a line, so increment our line counter */ |
3280af22 | 5808 | PL_curcop->cop_line++; |
a0ed51b3 | 5809 | |
02aa26ce | 5810 | /* update debugger info */ |
3280af22 | 5811 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
5812 | SV *sv = NEWSV(88,0); |
5813 | ||
93a17b20 | 5814 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
5815 | sv_setsv(sv,PL_linestr); |
5816 | av_store(GvAV(PL_curcop->cop_filegv), | |
5817 | (I32)PL_curcop->cop_line, sv); | |
395c3793 | 5818 | } |
a0ed51b3 | 5819 | |
3280af22 NIS |
5820 | /* having changed the buffer, we must update PL_bufend */ |
5821 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 5822 | } |
02aa26ce NT |
5823 | |
5824 | /* at this point, we have successfully read the delimited string */ | |
5825 | ||
3280af22 | 5826 | PL_multi_end = PL_curcop->cop_line; |
79072805 | 5827 | s++; |
02aa26ce NT |
5828 | |
5829 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
5830 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
5831 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 5832 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 5833 | } |
02aa26ce NT |
5834 | |
5835 | /* decide whether this is the first or second quoted string we've read | |
5836 | for this op | |
5837 | */ | |
5838 | ||
3280af22 NIS |
5839 | if (PL_lex_stuff) |
5840 | PL_lex_repl = sv; | |
79072805 | 5841 | else |
3280af22 | 5842 | PL_lex_stuff = sv; |
378cc40b LW |
5843 | return s; |
5844 | } | |
5845 | ||
02aa26ce NT |
5846 | /* |
5847 | scan_num | |
5848 | takes: pointer to position in buffer | |
5849 | returns: pointer to new position in buffer | |
5850 | side-effects: builds ops for the constant in yylval.op | |
5851 | ||
5852 | Read a number in any of the formats that Perl accepts: | |
5853 | ||
5854 | 0(x[0-7A-F]+)|([0-7]+) | |
5855 | [\d_]+(\.[\d_]*)?[Ee](\d+) | |
5856 | ||
5857 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
5858 | underbars before a decimal point must be at three digit intervals. | |
5859 | ||
3280af22 | 5860 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
5861 | thing it reads. |
5862 | ||
5863 | If it reads a number without a decimal point or an exponent, it will | |
5864 | try converting the number to an integer and see if it can do so | |
5865 | without loss of precision. | |
5866 | */ | |
5867 | ||
378cc40b | 5868 | char * |
8ac85365 | 5869 | scan_num(char *start) |
378cc40b | 5870 | { |
02aa26ce NT |
5871 | register char *s = start; /* current position in buffer */ |
5872 | register char *d; /* destination in temp buffer */ | |
5873 | register char *e; /* end of temp buffer */ | |
5874 | I32 tryiv; /* used to see if it can be an int */ | |
5875 | double value; /* number read, as a double */ | |
5876 | SV *sv; /* place to put the converted number */ | |
5877 | I32 floatit; /* boolean: int or float? */ | |
5878 | char *lastub = 0; /* position of last underbar */ | |
fc36a67e | 5879 | static char number_too_long[] = "Number too long"; |
378cc40b | 5880 | |
02aa26ce NT |
5881 | /* We use the first character to decide what type of number this is */ |
5882 | ||
378cc40b | 5883 | switch (*s) { |
79072805 | 5884 | default: |
02aa26ce NT |
5885 | croak("panic: scan_num"); |
5886 | ||
5887 | /* if it starts with a 0, it could be an octal number, a decimal in | |
5888 | 0.13 disguise, or a hexadecimal number. | |
5889 | */ | |
378cc40b LW |
5890 | case '0': |
5891 | { | |
02aa26ce NT |
5892 | /* variables: |
5893 | u holds the "number so far" | |
5894 | shift the power of 2 of the base (hex == 4, octal == 3) | |
5895 | overflowed was the number more than we can hold? | |
5896 | ||
5897 | Shift is used when we add a digit. It also serves as an "are | |
5898 | we in octal or hex?" indicator to disallow hex characters when | |
5899 | in octal mode. | |
5900 | */ | |
55497cff | 5901 | UV u; |
79072805 | 5902 | I32 shift; |
55497cff | 5903 | bool overflowed = FALSE; |
378cc40b | 5904 | |
02aa26ce | 5905 | /* check for hex */ |
378cc40b LW |
5906 | if (s[1] == 'x') { |
5907 | shift = 4; | |
5908 | s += 2; | |
5909 | } | |
02aa26ce | 5910 | /* check for a decimal in disguise */ |
378cc40b LW |
5911 | else if (s[1] == '.') |
5912 | goto decimal; | |
02aa26ce | 5913 | /* so it must be octal */ |
378cc40b LW |
5914 | else |
5915 | shift = 3; | |
55497cff | 5916 | u = 0; |
02aa26ce NT |
5917 | |
5918 | /* read the rest of the octal number */ | |
378cc40b | 5919 | for (;;) { |
02aa26ce | 5920 | UV n, b; /* n is used in the overflow test, b is the digit we're adding on */ |
55497cff | 5921 | |
378cc40b | 5922 | switch (*s) { |
02aa26ce NT |
5923 | |
5924 | /* if we don't mention it, we're done */ | |
378cc40b LW |
5925 | default: |
5926 | goto out; | |
02aa26ce NT |
5927 | |
5928 | /* _ are ignored */ | |
de3bb511 LW |
5929 | case '_': |
5930 | s++; | |
5931 | break; | |
02aa26ce NT |
5932 | |
5933 | /* 8 and 9 are not octal */ | |
378cc40b LW |
5934 | case '8': case '9': |
5935 | if (shift != 4) | |
a687059c | 5936 | yyerror("Illegal octal digit"); |
378cc40b | 5937 | /* FALL THROUGH */ |
02aa26ce NT |
5938 | |
5939 | /* octal digits */ | |
378cc40b LW |
5940 | case '0': case '1': case '2': case '3': case '4': |
5941 | case '5': case '6': case '7': | |
02aa26ce | 5942 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 5943 | goto digit; |
02aa26ce NT |
5944 | |
5945 | /* hex digits */ | |
378cc40b LW |
5946 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
5947 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 5948 | /* make sure they said 0x */ |
378cc40b LW |
5949 | if (shift != 4) |
5950 | goto out; | |
55497cff | 5951 | b = (*s++ & 7) + 9; |
02aa26ce NT |
5952 | |
5953 | /* Prepare to put the digit we have onto the end | |
5954 | of the number so far. We check for overflows. | |
5955 | */ | |
5956 | ||
55497cff | 5957 | digit: |
02aa26ce | 5958 | n = u << shift; /* make room for the digit */ |
b3ac6de7 | 5959 | if (!overflowed && (n >> shift) != u |
3280af22 | 5960 | && !(PL_hints & HINT_NEW_BINARY)) { |
55497cff | 5961 | warn("Integer overflow in %s number", |
5962 | (shift == 4) ? "hex" : "octal"); | |
5963 | overflowed = TRUE; | |
5964 | } | |
02aa26ce | 5965 | u = n | b; /* add the digit to the end */ |
378cc40b LW |
5966 | break; |
5967 | } | |
5968 | } | |
02aa26ce NT |
5969 | |
5970 | /* if we get here, we had success: make a scalar value from | |
5971 | the number. | |
5972 | */ | |
378cc40b | 5973 | out: |
79072805 | 5974 | sv = NEWSV(92,0); |
55497cff | 5975 | sv_setuv(sv, u); |
3280af22 | 5976 | if ( PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 5977 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
5978 | } |
5979 | break; | |
02aa26ce NT |
5980 | |
5981 | /* | |
5982 | handle decimal numbers. | |
5983 | we're also sent here when we read a 0 as the first digit | |
5984 | */ | |
378cc40b LW |
5985 | case '1': case '2': case '3': case '4': case '5': |
5986 | case '6': case '7': case '8': case '9': case '.': | |
5987 | decimal: | |
3280af22 NIS |
5988 | d = PL_tokenbuf; |
5989 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 5990 | floatit = FALSE; |
02aa26ce NT |
5991 | |
5992 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 5993 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
5994 | /* skip underscores, checking for misplaced ones |
5995 | if -w is on | |
5996 | */ | |
93a17b20 | 5997 | if (*s == '_') { |
d008e5eb | 5998 | dTHR; /* only for ckWARN */ |
599cee73 PM |
5999 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
6000 | warner(WARN_SYNTAX, "Misplaced _ in number"); | |
93a17b20 LW |
6001 | lastub = ++s; |
6002 | } | |
fc36a67e | 6003 | else { |
02aa26ce | 6004 | /* check for end of fixed-length buffer */ |
fc36a67e | 6005 | if (d >= e) |
6006 | croak(number_too_long); | |
02aa26ce | 6007 | /* if we're ok, copy the character */ |
378cc40b | 6008 | *d++ = *s++; |
fc36a67e | 6009 | } |
378cc40b | 6010 | } |
02aa26ce NT |
6011 | |
6012 | /* final misplaced underbar check */ | |
d008e5eb GS |
6013 | if (lastub && s - lastub != 3) { |
6014 | dTHR; | |
6015 | if (ckWARN(WARN_SYNTAX)) | |
6016 | warner(WARN_SYNTAX, "Misplaced _ in number"); | |
6017 | } | |
02aa26ce NT |
6018 | |
6019 | /* read a decimal portion if there is one. avoid | |
6020 | 3..5 being interpreted as the number 3. followed | |
6021 | by .5 | |
6022 | */ | |
2f3197b3 | 6023 | if (*s == '.' && s[1] != '.') { |
79072805 | 6024 | floatit = TRUE; |
378cc40b | 6025 | *d++ = *s++; |
02aa26ce NT |
6026 | |
6027 | /* copy, ignoring underbars, until we run out of | |
6028 | digits. Note: no misplaced underbar checks! | |
6029 | */ | |
fc36a67e | 6030 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6031 | /* fixed length buffer check */ |
fc36a67e | 6032 | if (d >= e) |
6033 | croak(number_too_long); | |
6034 | if (*s != '_') | |
6035 | *d++ = *s; | |
378cc40b LW |
6036 | } |
6037 | } | |
02aa26ce NT |
6038 | |
6039 | /* read exponent part, if present */ | |
93a17b20 | 6040 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6041 | floatit = TRUE; |
6042 | s++; | |
02aa26ce NT |
6043 | |
6044 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6045 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6046 | |
6047 | /* allow positive or negative exponent */ | |
378cc40b LW |
6048 | if (*s == '+' || *s == '-') |
6049 | *d++ = *s++; | |
02aa26ce NT |
6050 | |
6051 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6052 | while (isDIGIT(*s)) { |
6053 | if (d >= e) | |
6054 | croak(number_too_long); | |
378cc40b | 6055 | *d++ = *s++; |
fc36a67e | 6056 | } |
378cc40b | 6057 | } |
02aa26ce NT |
6058 | |
6059 | /* terminate the string */ | |
378cc40b | 6060 | *d = '\0'; |
02aa26ce NT |
6061 | |
6062 | /* make an sv from the string */ | |
79072805 | 6063 | sv = NEWSV(92,0); |
02aa26ce | 6064 | /* reset numeric locale in case we were earlier left in Swaziland */ |
36477c24 | 6065 | SET_NUMERIC_STANDARD(); |
3280af22 | 6066 | value = atof(PL_tokenbuf); |
02aa26ce NT |
6067 | |
6068 | /* | |
6069 | See if we can make do with an integer value without loss of | |
6070 | precision. We use I_V to cast to an int, because some | |
6071 | compilers have issues. Then we try casting it back and see | |
6072 | if it was the same. We only do this if we know we | |
6073 | specifically read an integer. | |
6074 | ||
6075 | Note: if floatit is true, then we don't need to do the | |
6076 | conversion at all. | |
6077 | */ | |
1e422769 | 6078 | tryiv = I_V(value); |
6079 | if (!floatit && (double)tryiv == value) | |
6080 | sv_setiv(sv, tryiv); | |
2f3197b3 | 6081 | else |
1e422769 | 6082 | sv_setnv(sv, value); |
3280af22 NIS |
6083 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : (PL_hints & HINT_NEW_INTEGER) ) |
6084 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, | |
b3ac6de7 | 6085 | (floatit ? "float" : "integer"), sv, Nullsv, NULL); |
378cc40b | 6086 | break; |
79072805 | 6087 | } |
a687059c | 6088 | |
02aa26ce NT |
6089 | /* make the op for the constant and return */ |
6090 | ||
79072805 | 6091 | yylval.opval = newSVOP(OP_CONST, 0, sv); |
a687059c | 6092 | |
378cc40b LW |
6093 | return s; |
6094 | } | |
6095 | ||
76e3520e | 6096 | STATIC char * |
8ac85365 | 6097 | scan_formline(register char *s) |
378cc40b | 6098 | { |
11343788 | 6099 | dTHR; |
79072805 | 6100 | register char *eol; |
378cc40b | 6101 | register char *t; |
a0d0e21e | 6102 | SV *stuff = newSVpv("",0); |
79072805 | 6103 | bool needargs = FALSE; |
378cc40b | 6104 | |
79072805 | 6105 | while (!needargs) { |
85e6fe83 | 6106 | if (*s == '.' || *s == '}') { |
79072805 | 6107 | /*SUPPRESS 530*/ |
51882d45 GS |
6108 | #ifdef PERL_STRICT_CR |
6109 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6110 | #else | |
6111 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6112 | #endif | |
79072805 LW |
6113 | if (*t == '\n') |
6114 | break; | |
6115 | } | |
3280af22 | 6116 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6117 | eol = strchr(s,'\n'); |
0f85fab0 | 6118 | if (!eol++) |
3280af22 | 6119 | eol = PL_bufend; |
0f85fab0 LW |
6120 | } |
6121 | else | |
3280af22 | 6122 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6123 | if (*s != '#') { |
a0d0e21e LW |
6124 | for (t = s; t < eol; t++) { |
6125 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6126 | needargs = FALSE; | |
6127 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6128 | } |
a0d0e21e LW |
6129 | if (*t == '@' || *t == '^') |
6130 | needargs = TRUE; | |
378cc40b | 6131 | } |
a0d0e21e | 6132 | sv_catpvn(stuff, s, eol-s); |
79072805 LW |
6133 | } |
6134 | s = eol; | |
3280af22 NIS |
6135 | if (PL_rsfp) { |
6136 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6137 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6138 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6139 | if (!s) { |
3280af22 | 6140 | s = PL_bufptr; |
79072805 | 6141 | yyerror("Format not terminated"); |
378cc40b LW |
6142 | break; |
6143 | } | |
378cc40b | 6144 | } |
463ee0b2 | 6145 | incline(s); |
79072805 | 6146 | } |
a0d0e21e LW |
6147 | enough: |
6148 | if (SvCUR(stuff)) { | |
3280af22 | 6149 | PL_expect = XTERM; |
79072805 | 6150 | if (needargs) { |
3280af22 NIS |
6151 | PL_lex_state = LEX_NORMAL; |
6152 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6153 | force_next(','); |
6154 | } | |
a0d0e21e | 6155 | else |
3280af22 NIS |
6156 | PL_lex_state = LEX_FORMLINE; |
6157 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6158 | force_next(THING); |
3280af22 | 6159 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6160 | force_next(LSTOP); |
378cc40b | 6161 | } |
79072805 | 6162 | else { |
8990e307 | 6163 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6164 | PL_lex_formbrack = 0; |
6165 | PL_bufptr = s; | |
79072805 LW |
6166 | } |
6167 | return s; | |
378cc40b | 6168 | } |
a687059c | 6169 | |
76e3520e | 6170 | STATIC void |
8ac85365 | 6171 | set_csh(void) |
a687059c | 6172 | { |
ae986130 | 6173 | #ifdef CSH |
3280af22 NIS |
6174 | if (!PL_cshlen) |
6175 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6176 | #endif |
a687059c | 6177 | } |
463ee0b2 | 6178 | |
ba6d6ac9 | 6179 | I32 |
8ac85365 | 6180 | start_subparse(I32 is_format, U32 flags) |
8990e307 | 6181 | { |
11343788 | 6182 | dTHR; |
3280af22 NIS |
6183 | I32 oldsavestack_ix = PL_savestack_ix; |
6184 | CV* outsidecv = PL_compcv; | |
748a9306 | 6185 | AV* comppadlist; |
8990e307 | 6186 | |
3280af22 NIS |
6187 | if (PL_compcv) { |
6188 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 6189 | } |
3280af22 NIS |
6190 | save_I32(&PL_subline); |
6191 | save_item(PL_subname); | |
6192 | SAVEI32(PL_padix); | |
6193 | SAVESPTR(PL_curpad); | |
6194 | SAVESPTR(PL_comppad); | |
6195 | SAVESPTR(PL_comppad_name); | |
6196 | SAVESPTR(PL_compcv); | |
6197 | SAVEI32(PL_comppad_name_fill); | |
6198 | SAVEI32(PL_min_intro_pending); | |
6199 | SAVEI32(PL_max_intro_pending); | |
6200 | SAVEI32(PL_pad_reset_pending); | |
6201 | ||
6202 | PL_compcv = (CV*)NEWSV(1104,0); | |
6203 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
6204 | CvFLAGS(PL_compcv) |= flags; | |
6205 | ||
6206 | PL_comppad = newAV(); | |
6207 | av_push(PL_comppad, Nullsv); | |
6208 | PL_curpad = AvARRAY(PL_comppad); | |
6209 | PL_comppad_name = newAV(); | |
6210 | PL_comppad_name_fill = 0; | |
6211 | PL_min_intro_pending = 0; | |
6212 | PL_padix = 0; | |
6213 | PL_subline = PL_curcop->cop_line; | |
6d4ff0d2 | 6214 | #ifdef USE_THREADS |
533c011a NIS |
6215 | av_store(PL_comppad_name, 0, newSVpv("@_", 2)); |
6216 | PL_curpad[0] = (SV*)newAV(); | |
6217 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 6218 | #endif /* USE_THREADS */ |
748a9306 LW |
6219 | |
6220 | comppadlist = newAV(); | |
6221 | AvREAL_off(comppadlist); | |
3280af22 NIS |
6222 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
6223 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 6224 | |
3280af22 NIS |
6225 | CvPADLIST(PL_compcv) = comppadlist; |
6226 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 6227 | #ifdef USE_THREADS |
533c011a NIS |
6228 | CvOWNER(PL_compcv) = 0; |
6229 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
6230 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 6231 | #endif /* USE_THREADS */ |
748a9306 | 6232 | |
8990e307 LW |
6233 | return oldsavestack_ix; |
6234 | } | |
6235 | ||
6236 | int | |
8ac85365 | 6237 | yywarn(char *s) |
8990e307 | 6238 | { |
11343788 | 6239 | dTHR; |
3280af22 NIS |
6240 | --PL_error_count; |
6241 | PL_in_eval |= 2; | |
748a9306 | 6242 | yyerror(s); |
3280af22 | 6243 | PL_in_eval &= ~2; |
748a9306 | 6244 | return 0; |
8990e307 LW |
6245 | } |
6246 | ||
6247 | int | |
8ac85365 | 6248 | yyerror(char *s) |
463ee0b2 | 6249 | { |
11343788 | 6250 | dTHR; |
68dc0745 | 6251 | char *where = NULL; |
6252 | char *context = NULL; | |
6253 | int contlen = -1; | |
46fc3d4c | 6254 | SV *msg; |
463ee0b2 | 6255 | |
3280af22 | 6256 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 6257 | where = "at EOF"; |
3280af22 NIS |
6258 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
6259 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
6260 | while (isSPACE(*PL_oldoldbufptr)) | |
6261 | PL_oldoldbufptr++; | |
6262 | context = PL_oldoldbufptr; | |
6263 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 6264 | } |
3280af22 NIS |
6265 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
6266 | PL_oldbufptr != PL_bufptr) { | |
6267 | while (isSPACE(*PL_oldbufptr)) | |
6268 | PL_oldbufptr++; | |
6269 | context = PL_oldbufptr; | |
6270 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
6271 | } |
6272 | else if (yychar > 255) | |
68dc0745 | 6273 | where = "next token ???"; |
463ee0b2 | 6274 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
6275 | if (PL_lex_state == LEX_NORMAL || |
6276 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 6277 | where = "at end of line"; |
3280af22 | 6278 | else if (PL_lex_inpat) |
68dc0745 | 6279 | where = "within pattern"; |
463ee0b2 | 6280 | else |
68dc0745 | 6281 | where = "within string"; |
463ee0b2 | 6282 | } |
46fc3d4c | 6283 | else { |
6284 | SV *where_sv = sv_2mortal(newSVpv("next char ", 0)); | |
6285 | if (yychar < 32) | |
6286 | sv_catpvf(where_sv, "^%c", toCTRL(yychar)); | |
6287 | else if (isPRINT_LC(yychar)) | |
6288 | sv_catpvf(where_sv, "%c", yychar); | |
463ee0b2 | 6289 | else |
46fc3d4c | 6290 | sv_catpvf(where_sv, "\\%03o", yychar & 255); |
6291 | where = SvPVX(where_sv); | |
463ee0b2 | 6292 | } |
46fc3d4c | 6293 | msg = sv_2mortal(newSVpv(s, 0)); |
fc36a67e | 6294 | sv_catpvf(msg, " at %_ line %ld, ", |
3280af22 | 6295 | GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line); |
68dc0745 | 6296 | if (context) |
46fc3d4c | 6297 | sv_catpvf(msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 6298 | else |
46fc3d4c | 6299 | sv_catpvf(msg, "%s\n", where); |
3280af22 | 6300 | if (PL_multi_start < PL_multi_end && (U32)(PL_curcop->cop_line - PL_multi_end) <= 1) { |
46fc3d4c | 6301 | sv_catpvf(msg, |
4fdae800 | 6302 | " (Might be a runaway multi-line %c%c string starting on line %ld)\n", |
3280af22 NIS |
6303 | (int)PL_multi_open,(int)PL_multi_close,(long)PL_multi_start); |
6304 | PL_multi_end = 0; | |
a0d0e21e | 6305 | } |
3280af22 | 6306 | if (PL_in_eval & 2) |
fc36a67e | 6307 | warn("%_", msg); |
3280af22 | 6308 | else if (PL_in_eval) |
38a03e6e | 6309 | sv_catsv(ERRSV, msg); |
463ee0b2 | 6310 | else |
46fc3d4c | 6311 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); |
3280af22 NIS |
6312 | if (++PL_error_count >= 10) |
6313 | croak("%_ has too many errors.\n", GvSV(PL_curcop->cop_filegv)); | |
6314 | PL_in_my = 0; | |
6315 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
6316 | return 0; |
6317 | } | |
4e35701f | 6318 | |
161b471a | 6319 |