Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, 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 | |
d3b6f988 GS |
17 | #define yychar PL_yychar |
18 | #define yylval PL_yylval | |
19 | ||
76e3520e | 20 | #ifndef PERL_OBJECT |
20ce7b12 GS |
21 | static void check_uni (void); |
22 | static void force_next (I32 type); | |
23 | static char *force_version (char *start); | |
24 | static char *force_word (char *start, int token, int check_keyword, int allow_pack, int allow_tick); | |
25 | static SV *tokeq (SV *sv); | |
26 | static char *scan_const (char *start); | |
27 | static char *scan_formline (char *s); | |
28 | static char *scan_heredoc (char *s); | |
29 | static char *scan_ident (char *s, char *send, char *dest, STRLEN destlen, | |
30 | I32 ck_uni); | |
31 | static char *scan_inputsymbol (char *start); | |
32 | static char *scan_pat (char *start, I32 type); | |
33 | static char *scan_str (char *start); | |
34 | static char *scan_subst (char *start); | |
35 | static char *scan_trans (char *start); | |
36 | static char *scan_word (char *s, char *dest, STRLEN destlen, | |
37 | int allow_package, STRLEN *slp); | |
38 | static char *skipspace (char *s); | |
39 | static void checkcomma (char *s, char *name, char *what); | |
40 | static void force_ident (char *s, int kind); | |
41 | static void incline (char *s); | |
42 | static int intuit_method (char *s, GV *gv); | |
43 | static int intuit_more (char *s); | |
44 | static I32 lop (I32 f, expectation x, char *s); | |
45 | static void missingterm (char *s); | |
46 | static void no_op (char *what, char *s); | |
47 | static void set_csh (void); | |
48 | static I32 sublex_done (void); | |
49 | static I32 sublex_push (void); | |
50 | static I32 sublex_start (void); | |
a0d0e21e | 51 | #ifdef CRIPPLED_CC |
20ce7b12 | 52 | static int uni (I32 f, char *s); |
a0d0e21e | 53 | #endif |
20ce7b12 GS |
54 | static char * filter_gets (SV *sv, PerlIO *fp, STRLEN append); |
55 | static void restore_rsfp (void *f); | |
56 | static SV *new_constant (char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type); | |
57 | static void restore_expect (void *e); | |
58 | static void restore_lex_expect (void *e); | |
76e3520e | 59 | #endif /* PERL_OBJECT */ |
2f3197b3 | 60 | |
fc36a67e | 61 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 62 | |
a0ed51b3 | 63 | #define UTF (PL_hints & HINT_UTF8) |
834a4ddd LW |
64 | /* |
65 | * Note: we try to be careful never to call the isXXX_utf8() functions | |
66 | * unless we're pretty sure we've seen the beginning of a UTF-8 character | |
67 | * (that is, the two high bits are set). Otherwise we risk loading in the | |
68 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. | |
69 | */ | |
70 | #define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
71 | ? isIDFIRST(*(p)) \ | |
72 | : isIDFIRST_utf8((U8*)p)) | |
73 | #define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
74 | ? isALNUM(*(p)) \ | |
75 | : isALNUM_utf8((U8*)p)) | |
a0ed51b3 | 76 | |
2b92dfce GS |
77 | /* In variables name $^X, these are the legal values for X. |
78 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
79 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
80 | ||
79072805 LW |
81 | /* The following are arranged oddly so that the guard on the switch statement |
82 | * can get by with a single comparison (if the compiler is smart enough). | |
83 | */ | |
84 | ||
fb73857a | 85 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
86 | ||
55497cff | 87 | #define LEX_NORMAL 10 |
88 | #define LEX_INTERPNORMAL 9 | |
89 | #define LEX_INTERPCASEMOD 8 | |
90 | #define LEX_INTERPPUSH 7 | |
91 | #define LEX_INTERPSTART 6 | |
92 | #define LEX_INTERPEND 5 | |
93 | #define LEX_INTERPENDMAYBE 4 | |
94 | #define LEX_INTERPCONCAT 3 | |
95 | #define LEX_INTERPCONST 2 | |
96 | #define LEX_FORMLINE 1 | |
97 | #define LEX_KNOWNEXT 0 | |
79072805 | 98 | |
395c3793 LW |
99 | #ifdef I_FCNTL |
100 | #include <fcntl.h> | |
101 | #endif | |
fe14fcc3 LW |
102 | #ifdef I_SYS_FILE |
103 | #include <sys/file.h> | |
104 | #endif | |
395c3793 | 105 | |
a790bc05 | 106 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
107 | #ifdef I_UNISTD | |
108 | # include <unistd.h> /* Needed for execv() */ | |
109 | #endif | |
110 | ||
111 | ||
79072805 LW |
112 | #ifdef ff_next |
113 | #undef ff_next | |
d48672a2 LW |
114 | #endif |
115 | ||
a1a0e61e TD |
116 | #ifdef USE_PURE_BISON |
117 | YYSTYPE* yylval_pointer = NULL; | |
118 | int* yychar_pointer = NULL; | |
22c35a8c GS |
119 | # undef yylval |
120 | # undef yychar | |
e4bfbdd4 JH |
121 | # define yylval (*yylval_pointer) |
122 | # define yychar (*yychar_pointer) | |
123 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
a1a0e61e | 124 | #else |
e4bfbdd4 | 125 | # define PERL_YYLEX_PARAM |
a1a0e61e TD |
126 | #endif |
127 | ||
79072805 | 128 | #include "keywords.h" |
fe14fcc3 | 129 | |
ae986130 LW |
130 | #ifdef CLINE |
131 | #undef CLINE | |
132 | #endif | |
3280af22 NIS |
133 | #define CLINE (PL_copline = (PL_curcop->cop_line < PL_copline ? PL_curcop->cop_line : PL_copline)) |
134 | ||
135 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) | |
136 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
137 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
138 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
139 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
140 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
141 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
142 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
143 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
144 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
145 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
146 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
147 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
148 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
149 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
150 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
151 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
152 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
153 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
154 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 155 | |
a687059c LW |
156 | /* This bit of chicanery makes a unary function followed by |
157 | * a parenthesis into a function with one argument, highest precedence. | |
158 | */ | |
2f3197b3 | 159 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
160 | PL_expect = XTERM, \ |
161 | PL_bufptr = s, \ | |
162 | PL_last_uni = PL_oldbufptr, \ | |
163 | PL_last_lop_op = f, \ | |
a687059c LW |
164 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
165 | ||
79072805 | 166 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
167 | PL_bufptr = s, \ |
168 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
169 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
170 | ||
9f68db38 | 171 | /* grandfather return to old style */ |
3280af22 | 172 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 173 | |
76e3520e | 174 | STATIC int |
8ac85365 | 175 | ao(int toketype) |
a0d0e21e | 176 | { |
3280af22 NIS |
177 | if (*PL_bufptr == '=') { |
178 | PL_bufptr++; | |
a0d0e21e LW |
179 | if (toketype == ANDAND) |
180 | yylval.ival = OP_ANDASSIGN; | |
181 | else if (toketype == OROR) | |
182 | yylval.ival = OP_ORASSIGN; | |
183 | toketype = ASSIGNOP; | |
184 | } | |
185 | return toketype; | |
186 | } | |
187 | ||
76e3520e | 188 | STATIC void |
8ac85365 | 189 | no_op(char *what, char *s) |
463ee0b2 | 190 | { |
3280af22 NIS |
191 | char *oldbp = PL_bufptr; |
192 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 193 | |
3280af22 | 194 | PL_bufptr = s; |
46fc3d4c | 195 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 196 | if (is_first) |
a0d0e21e | 197 | warn("\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 198 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 199 | char *t; |
834a4ddd | 200 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 201 | if (t < PL_bufptr && isSPACE(*t)) |
748a9306 | 202 | warn("\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 203 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
204 | |
205 | } | |
d194fe61 GS |
206 | else if (s <= oldbp) |
207 | warn("\t(Missing operator before end of line?)\n"); | |
748a9306 LW |
208 | else |
209 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
3280af22 | 210 | PL_bufptr = oldbp; |
8990e307 LW |
211 | } |
212 | ||
76e3520e | 213 | STATIC void |
8ac85365 | 214 | missingterm(char *s) |
8990e307 LW |
215 | { |
216 | char tmpbuf[3]; | |
217 | char q; | |
218 | if (s) { | |
219 | char *nl = strrchr(s,'\n'); | |
d2719217 | 220 | if (nl) |
8990e307 LW |
221 | *nl = '\0'; |
222 | } | |
9d116dd7 JH |
223 | else if ( |
224 | #ifdef EBCDIC | |
225 | iscntrl(PL_multi_close) | |
226 | #else | |
227 | PL_multi_close < 32 || PL_multi_close == 127 | |
228 | #endif | |
229 | ) { | |
8990e307 | 230 | *tmpbuf = '^'; |
3280af22 | 231 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
232 | s = "\\n"; |
233 | tmpbuf[2] = '\0'; | |
234 | s = tmpbuf; | |
235 | } | |
236 | else { | |
3280af22 | 237 | *tmpbuf = PL_multi_close; |
8990e307 LW |
238 | tmpbuf[1] = '\0'; |
239 | s = tmpbuf; | |
240 | } | |
241 | q = strchr(s,'"') ? '\'' : '"'; | |
242 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 243 | } |
79072805 LW |
244 | |
245 | void | |
8ac85365 | 246 | deprecate(char *s) |
a0d0e21e | 247 | { |
d008e5eb | 248 | dTHR; |
599cee73 PM |
249 | if (ckWARN(WARN_DEPRECATED)) |
250 | warner(WARN_DEPRECATED, "Use of %s is deprecated", s); | |
a0d0e21e LW |
251 | } |
252 | ||
76e3520e | 253 | STATIC void |
8ac85365 | 254 | depcom(void) |
a0d0e21e LW |
255 | { |
256 | deprecate("comma-less variable list"); | |
257 | } | |
258 | ||
a868473f NIS |
259 | #ifdef WIN32 |
260 | ||
76e3520e | 261 | STATIC I32 |
a868473f NIS |
262 | win32_textfilter(int idx, SV *sv, int maxlen) |
263 | { | |
264 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
265 | if (count > 0 && !maxlen) | |
266 | win32_strip_return(sv); | |
267 | return count; | |
268 | } | |
269 | #endif | |
270 | ||
dfe13c55 GS |
271 | #ifndef PERL_OBJECT |
272 | ||
a0ed51b3 LW |
273 | STATIC I32 |
274 | utf16_textfilter(int idx, SV *sv, int maxlen) | |
275 | { | |
276 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
277 | if (count) { | |
dfe13c55 GS |
278 | U8* tmps; |
279 | U8* tend; | |
280 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 281 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 282 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
283 | |
284 | } | |
285 | return count; | |
286 | } | |
287 | ||
288 | STATIC I32 | |
289 | utf16rev_textfilter(int idx, SV *sv, int maxlen) | |
290 | { | |
291 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
292 | if (count) { | |
dfe13c55 GS |
293 | U8* tmps; |
294 | U8* tend; | |
295 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 296 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 297 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
298 | |
299 | } | |
300 | return count; | |
301 | } | |
a868473f | 302 | |
dfe13c55 GS |
303 | #endif |
304 | ||
a0d0e21e | 305 | void |
8ac85365 | 306 | lex_start(SV *line) |
79072805 | 307 | { |
0f15f207 | 308 | dTHR; |
8990e307 LW |
309 | char *s; |
310 | STRLEN len; | |
311 | ||
3280af22 NIS |
312 | SAVEI32(PL_lex_dojoin); |
313 | SAVEI32(PL_lex_brackets); | |
314 | SAVEI32(PL_lex_fakebrack); | |
315 | SAVEI32(PL_lex_casemods); | |
316 | SAVEI32(PL_lex_starts); | |
317 | SAVEI32(PL_lex_state); | |
318 | SAVESPTR(PL_lex_inpat); | |
319 | SAVEI32(PL_lex_inwhat); | |
320 | SAVEI16(PL_curcop->cop_line); | |
321 | SAVEPPTR(PL_bufptr); | |
322 | SAVEPPTR(PL_bufend); | |
323 | SAVEPPTR(PL_oldbufptr); | |
324 | SAVEPPTR(PL_oldoldbufptr); | |
325 | SAVEPPTR(PL_linestart); | |
326 | SAVESPTR(PL_linestr); | |
327 | SAVEPPTR(PL_lex_brackstack); | |
328 | SAVEPPTR(PL_lex_casestack); | |
329 | SAVEDESTRUCTOR(restore_rsfp, PL_rsfp); | |
330 | SAVESPTR(PL_lex_stuff); | |
331 | SAVEI32(PL_lex_defer); | |
332 | SAVESPTR(PL_lex_repl); | |
333 | SAVEDESTRUCTOR(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ | |
334 | SAVEDESTRUCTOR(restore_lex_expect, PL_tokenbuf + PL_expect); | |
335 | ||
336 | PL_lex_state = LEX_NORMAL; | |
337 | PL_lex_defer = 0; | |
338 | PL_expect = XSTATE; | |
339 | PL_lex_brackets = 0; | |
340 | PL_lex_fakebrack = 0; | |
341 | New(899, PL_lex_brackstack, 120, char); | |
342 | New(899, PL_lex_casestack, 12, char); | |
343 | SAVEFREEPV(PL_lex_brackstack); | |
344 | SAVEFREEPV(PL_lex_casestack); | |
345 | PL_lex_casemods = 0; | |
346 | *PL_lex_casestack = '\0'; | |
347 | PL_lex_dojoin = 0; | |
348 | PL_lex_starts = 0; | |
349 | PL_lex_stuff = Nullsv; | |
350 | PL_lex_repl = Nullsv; | |
351 | PL_lex_inpat = 0; | |
352 | PL_lex_inwhat = 0; | |
353 | PL_linestr = line; | |
354 | if (SvREADONLY(PL_linestr)) | |
355 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
356 | s = SvPV(PL_linestr, len); | |
8990e307 | 357 | if (len && s[len-1] != ';') { |
3280af22 NIS |
358 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
359 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
360 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 361 | } |
3280af22 NIS |
362 | SvTEMP_off(PL_linestr); |
363 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
364 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
365 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 366 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 367 | PL_rsfp = 0; |
79072805 | 368 | } |
a687059c | 369 | |
463ee0b2 | 370 | void |
8ac85365 | 371 | lex_end(void) |
463ee0b2 | 372 | { |
3280af22 | 373 | PL_doextract = FALSE; |
463ee0b2 LW |
374 | } |
375 | ||
76e3520e | 376 | STATIC void |
8ac85365 | 377 | restore_rsfp(void *f) |
6d5fb7e3 | 378 | { |
760ac839 | 379 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 380 | |
3280af22 NIS |
381 | if (PL_rsfp == PerlIO_stdin()) |
382 | PerlIO_clearerr(PL_rsfp); | |
383 | else if (PL_rsfp && (PL_rsfp != fp)) | |
384 | PerlIO_close(PL_rsfp); | |
385 | PL_rsfp = fp; | |
6d5fb7e3 CS |
386 | } |
387 | ||
76e3520e | 388 | STATIC void |
7fae4e64 | 389 | restore_expect(void *e) |
49d8d3a1 MB |
390 | { |
391 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 392 | PL_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
393 | } |
394 | ||
837485b6 | 395 | STATIC void |
7fae4e64 | 396 | restore_lex_expect(void *e) |
49d8d3a1 MB |
397 | { |
398 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 399 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
400 | } |
401 | ||
837485b6 | 402 | STATIC void |
8ac85365 | 403 | incline(char *s) |
463ee0b2 | 404 | { |
0f15f207 | 405 | dTHR; |
463ee0b2 LW |
406 | char *t; |
407 | char *n; | |
408 | char ch; | |
409 | int sawline = 0; | |
410 | ||
3280af22 | 411 | PL_curcop->cop_line++; |
463ee0b2 LW |
412 | if (*s++ != '#') |
413 | return; | |
414 | while (*s == ' ' || *s == '\t') s++; | |
415 | if (strnEQ(s, "line ", 5)) { | |
416 | s += 5; | |
417 | sawline = 1; | |
418 | } | |
419 | if (!isDIGIT(*s)) | |
420 | return; | |
421 | n = s; | |
422 | while (isDIGIT(*s)) | |
423 | s++; | |
424 | while (*s == ' ' || *s == '\t') | |
425 | s++; | |
426 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
427 | s++; | |
428 | else { | |
429 | if (!sawline) | |
430 | return; /* false alarm */ | |
431 | for (t = s; !isSPACE(*t); t++) ; | |
432 | } | |
433 | ch = *t; | |
434 | *t = '\0'; | |
435 | if (t - s > 0) | |
3280af22 | 436 | PL_curcop->cop_filegv = gv_fetchfile(s); |
463ee0b2 | 437 | else |
3280af22 | 438 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
463ee0b2 | 439 | *t = ch; |
3280af22 | 440 | PL_curcop->cop_line = atoi(n)-1; |
463ee0b2 LW |
441 | } |
442 | ||
76e3520e | 443 | STATIC char * |
8ac85365 | 444 | skipspace(register char *s) |
a687059c | 445 | { |
11343788 | 446 | dTHR; |
3280af22 NIS |
447 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
448 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
449 | s++; |
450 | return s; | |
451 | } | |
452 | for (;;) { | |
fd049845 | 453 | STRLEN prevlen; |
60e6418e GS |
454 | while (s < PL_bufend && isSPACE(*s)) { |
455 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
456 | incline(s); | |
457 | } | |
3280af22 NIS |
458 | if (s < PL_bufend && *s == '#') { |
459 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 460 | s++; |
60e6418e | 461 | if (s < PL_bufend) { |
463ee0b2 | 462 | s++; |
60e6418e GS |
463 | if (PL_in_eval && !PL_rsfp) { |
464 | incline(s); | |
465 | continue; | |
466 | } | |
467 | } | |
463ee0b2 | 468 | } |
3280af22 | 469 | if (s < PL_bufend || !PL_rsfp || PL_lex_state != LEX_NORMAL) |
463ee0b2 | 470 | return s; |
3280af22 NIS |
471 | if ((s = filter_gets(PL_linestr, PL_rsfp, (prevlen = SvCUR(PL_linestr)))) == Nullch) { |
472 | if (PL_minus_n || PL_minus_p) { | |
473 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
474 | ";}continue{print or die qq(-p destination: $!\\n)" : |
475 | ""); | |
3280af22 NIS |
476 | sv_catpv(PL_linestr,";}"); |
477 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
478 | } |
479 | else | |
3280af22 NIS |
480 | sv_setpv(PL_linestr,";"); |
481 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
482 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
483 | if (PL_preprocess && !PL_in_eval) | |
484 | (void)PerlProc_pclose(PL_rsfp); | |
485 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
486 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 487 | else |
3280af22 NIS |
488 | (void)PerlIO_close(PL_rsfp); |
489 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
490 | return s; |
491 | } | |
3280af22 NIS |
492 | PL_linestart = PL_bufptr = s + prevlen; |
493 | PL_bufend = s + SvCUR(PL_linestr); | |
494 | s = PL_bufptr; | |
a0d0e21e | 495 | incline(s); |
3280af22 | 496 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
497 | SV *sv = NEWSV(85,0); |
498 | ||
499 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
500 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
501 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
8990e307 | 502 | } |
463ee0b2 | 503 | } |
a687059c | 504 | } |
378cc40b | 505 | |
76e3520e | 506 | STATIC void |
ba106d47 GS |
507 | check_uni(void) |
508 | { | |
2f3197b3 LW |
509 | char *s; |
510 | char ch; | |
a0d0e21e | 511 | char *t; |
2f3197b3 | 512 | |
3280af22 | 513 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 514 | return; |
3280af22 NIS |
515 | while (isSPACE(*PL_last_uni)) |
516 | PL_last_uni++; | |
834a4ddd | 517 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 518 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 519 | return; |
2f3197b3 LW |
520 | ch = *s; |
521 | *s = '\0'; | |
3280af22 | 522 | warn("Warning: Use of \"%s\" without parens is ambiguous", PL_last_uni); |
2f3197b3 LW |
523 | *s = ch; |
524 | } | |
525 | ||
ffed7fef LW |
526 | #ifdef CRIPPLED_CC |
527 | ||
528 | #undef UNI | |
ffed7fef | 529 | #define UNI(f) return uni(f,s) |
ffed7fef | 530 | |
76e3520e | 531 | STATIC int |
8ac85365 | 532 | uni(I32 f, char *s) |
ffed7fef LW |
533 | { |
534 | yylval.ival = f; | |
3280af22 NIS |
535 | PL_expect = XTERM; |
536 | PL_bufptr = s; | |
8f872242 NIS |
537 | PL_last_uni = PL_oldbufptr; |
538 | PL_last_lop_op = f; | |
ffed7fef LW |
539 | if (*s == '(') |
540 | return FUNC1; | |
541 | s = skipspace(s); | |
542 | if (*s == '(') | |
543 | return FUNC1; | |
544 | else | |
545 | return UNIOP; | |
546 | } | |
547 | ||
a0d0e21e LW |
548 | #endif /* CRIPPLED_CC */ |
549 | ||
550 | #define LOP(f,x) return lop(f,x,s) | |
551 | ||
76e3520e | 552 | STATIC I32 |
0fa19009 | 553 | lop(I32 f, expectation x, char *s) |
ffed7fef | 554 | { |
0f15f207 | 555 | dTHR; |
79072805 | 556 | yylval.ival = f; |
35c8bce7 | 557 | CLINE; |
3280af22 NIS |
558 | PL_expect = x; |
559 | PL_bufptr = s; | |
560 | PL_last_lop = PL_oldbufptr; | |
561 | PL_last_lop_op = f; | |
562 | if (PL_nexttoke) | |
a0d0e21e | 563 | return LSTOP; |
79072805 LW |
564 | if (*s == '(') |
565 | return FUNC; | |
566 | s = skipspace(s); | |
567 | if (*s == '(') | |
568 | return FUNC; | |
569 | else | |
570 | return LSTOP; | |
571 | } | |
572 | ||
76e3520e | 573 | STATIC void |
8ac85365 | 574 | force_next(I32 type) |
79072805 | 575 | { |
3280af22 NIS |
576 | PL_nexttype[PL_nexttoke] = type; |
577 | PL_nexttoke++; | |
578 | if (PL_lex_state != LEX_KNOWNEXT) { | |
579 | PL_lex_defer = PL_lex_state; | |
580 | PL_lex_expect = PL_expect; | |
581 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
582 | } |
583 | } | |
584 | ||
76e3520e | 585 | STATIC char * |
15f0808c | 586 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 587 | { |
463ee0b2 LW |
588 | register char *s; |
589 | STRLEN len; | |
590 | ||
591 | start = skipspace(start); | |
592 | s = start; | |
834a4ddd | 593 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 594 | (allow_pack && *s == ':') || |
15f0808c | 595 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 596 | { |
3280af22 NIS |
597 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
598 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
599 | return start; |
600 | if (token == METHOD) { | |
601 | s = skipspace(s); | |
602 | if (*s == '(') | |
3280af22 | 603 | PL_expect = XTERM; |
463ee0b2 | 604 | else { |
3280af22 | 605 | PL_expect = XOPERATOR; |
463ee0b2 | 606 | } |
79072805 | 607 | } |
3280af22 NIS |
608 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
609 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
610 | force_next(token); |
611 | } | |
612 | return s; | |
613 | } | |
614 | ||
76e3520e | 615 | STATIC void |
8ac85365 | 616 | force_ident(register char *s, int kind) |
79072805 LW |
617 | { |
618 | if (s && *s) { | |
11343788 | 619 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 620 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 621 | force_next(WORD); |
748a9306 | 622 | if (kind) { |
e858de61 | 623 | dTHR; /* just for in_eval */ |
11343788 | 624 | o->op_private = OPpCONST_ENTERED; |
55497cff | 625 | /* XXX see note in pp_entereval() for why we forgo typo |
626 | warnings if the symbol must be introduced in an eval. | |
627 | GSAR 96-10-12 */ | |
3280af22 | 628 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
629 | kind == '$' ? SVt_PV : |
630 | kind == '@' ? SVt_PVAV : | |
631 | kind == '%' ? SVt_PVHV : | |
632 | SVt_PVGV | |
633 | ); | |
748a9306 | 634 | } |
79072805 LW |
635 | } |
636 | } | |
637 | ||
76e3520e | 638 | STATIC char * |
8ac85365 | 639 | force_version(char *s) |
89bfa8cd | 640 | { |
641 | OP *version = Nullop; | |
642 | ||
643 | s = skipspace(s); | |
644 | ||
645 | /* default VERSION number -- GBARR */ | |
646 | ||
647 | if(isDIGIT(*s)) { | |
648 | char *d; | |
649 | int c; | |
55497cff | 650 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 651 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
652 | s = scan_num(s); | |
653 | /* real VERSION number -- GBARR */ | |
654 | version = yylval.opval; | |
655 | } | |
656 | } | |
657 | ||
658 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 659 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 660 | force_next(WORD); |
661 | ||
662 | return (s); | |
663 | } | |
664 | ||
76e3520e GS |
665 | STATIC SV * |
666 | tokeq(SV *sv) | |
79072805 LW |
667 | { |
668 | register char *s; | |
669 | register char *send; | |
670 | register char *d; | |
b3ac6de7 IZ |
671 | STRLEN len = 0; |
672 | SV *pv = sv; | |
79072805 LW |
673 | |
674 | if (!SvLEN(sv)) | |
b3ac6de7 | 675 | goto finish; |
79072805 | 676 | |
a0d0e21e | 677 | s = SvPV_force(sv, len); |
748a9306 | 678 | if (SvIVX(sv) == -1) |
b3ac6de7 | 679 | goto finish; |
463ee0b2 | 680 | send = s + len; |
79072805 LW |
681 | while (s < send && *s != '\\') |
682 | s++; | |
683 | if (s == send) | |
b3ac6de7 | 684 | goto finish; |
79072805 | 685 | d = s; |
3280af22 | 686 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 687 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
688 | while (s < send) { |
689 | if (*s == '\\') { | |
a0d0e21e | 690 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
691 | s++; /* all that, just for this */ |
692 | } | |
693 | *d++ = *s++; | |
694 | } | |
695 | *d = '\0'; | |
463ee0b2 | 696 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 697 | finish: |
3280af22 | 698 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 699 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
700 | return sv; |
701 | } | |
702 | ||
76e3520e | 703 | STATIC I32 |
8ac85365 | 704 | sublex_start(void) |
79072805 LW |
705 | { |
706 | register I32 op_type = yylval.ival; | |
79072805 LW |
707 | |
708 | if (op_type == OP_NULL) { | |
3280af22 NIS |
709 | yylval.opval = PL_lex_op; |
710 | PL_lex_op = Nullop; | |
79072805 LW |
711 | return THING; |
712 | } | |
713 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 714 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
715 | |
716 | if (SvTYPE(sv) == SVt_PVIV) { | |
717 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
718 | STRLEN len; | |
719 | char *p; | |
720 | SV *nsv; | |
721 | ||
722 | p = SvPV(sv, len); | |
79cb57f6 | 723 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
724 | SvREFCNT_dec(sv); |
725 | sv = nsv; | |
726 | } | |
727 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 728 | PL_lex_stuff = Nullsv; |
79072805 LW |
729 | return THING; |
730 | } | |
731 | ||
3280af22 NIS |
732 | PL_sublex_info.super_state = PL_lex_state; |
733 | PL_sublex_info.sub_inwhat = op_type; | |
734 | PL_sublex_info.sub_op = PL_lex_op; | |
735 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 736 | |
3280af22 NIS |
737 | PL_expect = XTERM; |
738 | if (PL_lex_op) { | |
739 | yylval.opval = PL_lex_op; | |
740 | PL_lex_op = Nullop; | |
55497cff | 741 | return PMFUNC; |
742 | } | |
743 | else | |
744 | return FUNC; | |
745 | } | |
746 | ||
76e3520e | 747 | STATIC I32 |
8ac85365 | 748 | sublex_push(void) |
55497cff | 749 | { |
0f15f207 | 750 | dTHR; |
f46d017c | 751 | ENTER; |
55497cff | 752 | |
3280af22 NIS |
753 | PL_lex_state = PL_sublex_info.super_state; |
754 | SAVEI32(PL_lex_dojoin); | |
755 | SAVEI32(PL_lex_brackets); | |
756 | SAVEI32(PL_lex_fakebrack); | |
757 | SAVEI32(PL_lex_casemods); | |
758 | SAVEI32(PL_lex_starts); | |
759 | SAVEI32(PL_lex_state); | |
760 | SAVESPTR(PL_lex_inpat); | |
761 | SAVEI32(PL_lex_inwhat); | |
762 | SAVEI16(PL_curcop->cop_line); | |
763 | SAVEPPTR(PL_bufptr); | |
764 | SAVEPPTR(PL_oldbufptr); | |
765 | SAVEPPTR(PL_oldoldbufptr); | |
766 | SAVEPPTR(PL_linestart); | |
767 | SAVESPTR(PL_linestr); | |
768 | SAVEPPTR(PL_lex_brackstack); | |
769 | SAVEPPTR(PL_lex_casestack); | |
770 | ||
771 | PL_linestr = PL_lex_stuff; | |
772 | PL_lex_stuff = Nullsv; | |
773 | ||
774 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
775 | PL_bufend += SvCUR(PL_linestr); | |
776 | SAVEFREESV(PL_linestr); | |
777 | ||
778 | PL_lex_dojoin = FALSE; | |
779 | PL_lex_brackets = 0; | |
780 | PL_lex_fakebrack = 0; | |
781 | New(899, PL_lex_brackstack, 120, char); | |
782 | New(899, PL_lex_casestack, 12, char); | |
783 | SAVEFREEPV(PL_lex_brackstack); | |
784 | SAVEFREEPV(PL_lex_casestack); | |
785 | PL_lex_casemods = 0; | |
786 | *PL_lex_casestack = '\0'; | |
787 | PL_lex_starts = 0; | |
788 | PL_lex_state = LEX_INTERPCONCAT; | |
789 | PL_curcop->cop_line = PL_multi_start; | |
790 | ||
791 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
792 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
793 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 794 | else |
3280af22 | 795 | PL_lex_inpat = Nullop; |
79072805 | 796 | |
55497cff | 797 | return '('; |
79072805 LW |
798 | } |
799 | ||
76e3520e | 800 | STATIC I32 |
8ac85365 | 801 | sublex_done(void) |
79072805 | 802 | { |
3280af22 NIS |
803 | if (!PL_lex_starts++) { |
804 | PL_expect = XOPERATOR; | |
79cb57f6 | 805 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
806 | return THING; |
807 | } | |
808 | ||
3280af22 NIS |
809 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
810 | PL_lex_state = LEX_INTERPCASEMOD; | |
e4bfbdd4 | 811 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
812 | } |
813 | ||
79072805 | 814 | /* Is there a right-hand side to take care of? */ |
3280af22 NIS |
815 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
816 | PL_linestr = PL_lex_repl; | |
817 | PL_lex_inpat = 0; | |
818 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
819 | PL_bufend += SvCUR(PL_linestr); | |
820 | SAVEFREESV(PL_linestr); | |
821 | PL_lex_dojoin = FALSE; | |
822 | PL_lex_brackets = 0; | |
823 | PL_lex_fakebrack = 0; | |
824 | PL_lex_casemods = 0; | |
825 | *PL_lex_casestack = '\0'; | |
826 | PL_lex_starts = 0; | |
25da4f38 | 827 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
828 | PL_lex_state = LEX_INTERPNORMAL; |
829 | PL_lex_starts++; | |
e9fa98b2 HS |
830 | /* we don't clear PL_lex_repl here, so that we can check later |
831 | whether this is an evalled subst; that means we rely on the | |
832 | logic to ensure sublex_done() is called again only via the | |
833 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 834 | } |
e9fa98b2 | 835 | else { |
3280af22 | 836 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
837 | PL_lex_repl = Nullsv; |
838 | } | |
79072805 | 839 | return ','; |
ffed7fef LW |
840 | } |
841 | else { | |
f46d017c | 842 | LEAVE; |
3280af22 NIS |
843 | PL_bufend = SvPVX(PL_linestr); |
844 | PL_bufend += SvCUR(PL_linestr); | |
845 | PL_expect = XOPERATOR; | |
79072805 | 846 | return ')'; |
ffed7fef LW |
847 | } |
848 | } | |
849 | ||
02aa26ce NT |
850 | /* |
851 | scan_const | |
852 | ||
853 | Extracts a pattern, double-quoted string, or transliteration. This | |
854 | is terrifying code. | |
855 | ||
3280af22 NIS |
856 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
857 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
858 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
859 | ||
9b599b2a GS |
860 | Returns a pointer to the character scanned up to. Iff this is |
861 | advanced from the start pointer supplied (ie if anything was | |
862 | successfully parsed), will leave an OP for the substring scanned | |
863 | in yylval. Caller must intuit reason for not parsing further | |
864 | by looking at the next characters herself. | |
865 | ||
02aa26ce NT |
866 | In patterns: |
867 | backslashes: | |
868 | double-quoted style: \r and \n | |
869 | regexp special ones: \D \s | |
870 | constants: \x3 | |
871 | backrefs: \1 (deprecated in substitution replacements) | |
872 | case and quoting: \U \Q \E | |
873 | stops on @ and $, but not for $ as tail anchor | |
874 | ||
875 | In transliterations: | |
876 | characters are VERY literal, except for - not at the start or end | |
877 | of the string, which indicates a range. scan_const expands the | |
878 | range to the full set of intermediate characters. | |
879 | ||
880 | In double-quoted strings: | |
881 | backslashes: | |
882 | double-quoted style: \r and \n | |
883 | constants: \x3 | |
884 | backrefs: \1 (deprecated) | |
885 | case and quoting: \U \Q \E | |
886 | stops on @ and $ | |
887 | ||
888 | scan_const does *not* construct ops to handle interpolated strings. | |
889 | It stops processing as soon as it finds an embedded $ or @ variable | |
890 | and leaves it to the caller to work out what's going on. | |
891 | ||
892 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
893 | ||
894 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
895 | it's a tail anchor if $ is the last thing in the string, or if it's | |
896 | followed by one of ")| \n\t" | |
897 | ||
898 | \1 (backreferences) are turned into $1 | |
899 | ||
900 | The structure of the code is | |
901 | while (there's a character to process) { | |
902 | handle transliteration ranges | |
903 | skip regexp comments | |
904 | skip # initiated comments in //x patterns | |
905 | check for embedded @foo | |
906 | check for embedded scalars | |
907 | if (backslash) { | |
908 | leave intact backslashes from leave (below) | |
909 | deprecate \1 in strings and sub replacements | |
910 | handle string-changing backslashes \l \U \Q \E, etc. | |
911 | switch (what was escaped) { | |
912 | handle - in a transliteration (becomes a literal -) | |
913 | handle \132 octal characters | |
914 | handle 0x15 hex characters | |
915 | handle \cV (control V) | |
916 | handle printf backslashes (\f, \r, \n, etc) | |
917 | } (end switch) | |
918 | } (end if backslash) | |
919 | } (end while character to read) | |
920 | ||
921 | */ | |
922 | ||
76e3520e | 923 | STATIC char * |
8ac85365 | 924 | scan_const(char *start) |
79072805 | 925 | { |
3280af22 | 926 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
927 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
928 | register char *s = start; /* start of the constant */ | |
929 | register char *d = SvPVX(sv); /* destination for copies */ | |
930 | bool dorange = FALSE; /* are we in a translit range? */ | |
931 | I32 len; /* ? */ | |
ac2262e3 | 932 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
933 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
934 | : UTF; | |
ac2262e3 | 935 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
936 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) |
937 | : UTF; | |
02aa26ce | 938 | |
9b599b2a | 939 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 940 | char *leaveit = |
3280af22 | 941 | PL_lex_inpat |
a0ed51b3 | 942 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 943 | : ""; |
79072805 LW |
944 | |
945 | while (s < send || dorange) { | |
02aa26ce | 946 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 947 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 948 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 949 | if (dorange) { |
02aa26ce | 950 | I32 i; /* current expanded character */ |
8ada0baa | 951 | I32 min; /* first character in range */ |
02aa26ce NT |
952 | I32 max; /* last character in range */ |
953 | ||
954 | i = d - SvPVX(sv); /* remember current offset */ | |
955 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
956 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
957 | d -= 2; /* eat the first char and the - */ | |
958 | ||
8ada0baa JH |
959 | min = (U8)*d; /* first char in range */ |
960 | max = (U8)d[1]; /* last char in range */ | |
961 | ||
962 | #ifndef ASCIIish | |
963 | if ((isLOWER(min) && isLOWER(max)) || | |
964 | (isUPPER(min) && isUPPER(max))) { | |
965 | if (isLOWER(min)) { | |
966 | for (i = min; i <= max; i++) | |
967 | if (isLOWER(i)) | |
968 | *d++ = i; | |
969 | } else { | |
970 | for (i = min; i <= max; i++) | |
971 | if (isUPPER(i)) | |
972 | *d++ = i; | |
973 | } | |
974 | } | |
975 | else | |
976 | #endif | |
977 | for (i = min; i <= max; i++) | |
978 | *d++ = i; | |
02aa26ce NT |
979 | |
980 | /* mark the range as done, and continue */ | |
79072805 LW |
981 | dorange = FALSE; |
982 | continue; | |
983 | } | |
02aa26ce NT |
984 | |
985 | /* range begins (ignore - as first or last char) */ | |
79072805 | 986 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 987 | if (utf) { |
a176fa2a | 988 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
989 | s++; |
990 | continue; | |
991 | } | |
79072805 LW |
992 | dorange = TRUE; |
993 | s++; | |
994 | } | |
995 | } | |
02aa26ce NT |
996 | |
997 | /* if we get here, we're not doing a transliteration */ | |
998 | ||
0f5d15d6 IZ |
999 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1000 | except for the last char, which will be done separately. */ | |
3280af22 | 1001 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1002 | if (s[2] == '#') { |
1003 | while (s < send && *s != ')') | |
1004 | *d++ = *s++; | |
0f5d15d6 IZ |
1005 | } else if (s[2] == '{' |
1006 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1007 | I32 count = 1; |
0f5d15d6 | 1008 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1009 | char c; |
1010 | ||
d9f97599 GS |
1011 | while (count && (c = *regparse)) { |
1012 | if (c == '\\' && regparse[1]) | |
1013 | regparse++; | |
cc6b7395 IZ |
1014 | else if (c == '{') |
1015 | count++; | |
1016 | else if (c == '}') | |
1017 | count--; | |
d9f97599 | 1018 | regparse++; |
cc6b7395 | 1019 | } |
5bdf89e7 IZ |
1020 | if (*regparse != ')') { |
1021 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1022 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1023 | } |
0f5d15d6 | 1024 | while (s < regparse) |
cc6b7395 IZ |
1025 | *d++ = *s++; |
1026 | } | |
748a9306 | 1027 | } |
02aa26ce NT |
1028 | |
1029 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1030 | else if (*s == '#' && PL_lex_inpat && |
1031 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1032 | while (s+1 < send && *s != '\n') |
1033 | *d++ = *s++; | |
1034 | } | |
02aa26ce NT |
1035 | |
1036 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1037 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1038 | break; |
02aa26ce NT |
1039 | |
1040 | /* check for embedded scalars. only stop if we're sure it's a | |
1041 | variable. | |
1042 | */ | |
79072805 | 1043 | else if (*s == '$') { |
3280af22 | 1044 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1045 | break; |
c277df42 | 1046 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1047 | break; /* in regexp, $ might be tail anchor */ |
1048 | } | |
02aa26ce | 1049 | |
a0ed51b3 LW |
1050 | /* (now in tr/// code again) */ |
1051 | ||
d008e5eb GS |
1052 | if (*s & 0x80 && thisutf) { |
1053 | dTHR; /* only for ckWARN */ | |
1054 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1055 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1056 | if (len) { |
1057 | while (len--) | |
1058 | *d++ = *s++; | |
1059 | continue; | |
1060 | } | |
a0ed51b3 LW |
1061 | } |
1062 | } | |
1063 | ||
02aa26ce | 1064 | /* backslashes */ |
79072805 LW |
1065 | if (*s == '\\' && s+1 < send) { |
1066 | s++; | |
02aa26ce NT |
1067 | |
1068 | /* some backslashes we leave behind */ | |
c9f97d15 | 1069 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1070 | *d++ = '\\'; |
1071 | *d++ = *s++; | |
1072 | continue; | |
1073 | } | |
02aa26ce NT |
1074 | |
1075 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1076 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1077 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1078 | { |
d008e5eb | 1079 | dTHR; /* only for ckWARN */ |
599cee73 PM |
1080 | if (ckWARN(WARN_SYNTAX)) |
1081 | warner(WARN_SYNTAX, "\\%c better written as $%c", *s, *s); | |
79072805 LW |
1082 | *--s = '$'; |
1083 | break; | |
1084 | } | |
02aa26ce NT |
1085 | |
1086 | /* string-change backslash escapes */ | |
3280af22 | 1087 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1088 | --s; |
1089 | break; | |
1090 | } | |
02aa26ce NT |
1091 | |
1092 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1093 | switch (*s) { |
02aa26ce NT |
1094 | |
1095 | /* quoted - in transliterations */ | |
79072805 | 1096 | case '-': |
3280af22 | 1097 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1098 | *d++ = *s++; |
1099 | continue; | |
1100 | } | |
1101 | /* FALL THROUGH */ | |
1102 | default: | |
11b8faa4 JH |
1103 | { |
1104 | dTHR; | |
1105 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
1106 | warner(WARN_UNSAFE, | |
1107 | "Unrecognized escape \\%c passed through", | |
1108 | *s); | |
1109 | /* default action is to copy the quoted character */ | |
1110 | *d++ = *s++; | |
1111 | continue; | |
1112 | } | |
02aa26ce NT |
1113 | |
1114 | /* \132 indicates an octal constant */ | |
79072805 LW |
1115 | case '0': case '1': case '2': case '3': |
1116 | case '4': case '5': case '6': case '7': | |
1117 | *d++ = scan_oct(s, 3, &len); | |
1118 | s += len; | |
1119 | continue; | |
02aa26ce NT |
1120 | |
1121 | /* \x24 indicates a hex constant */ | |
79072805 | 1122 | case 'x': |
a0ed51b3 LW |
1123 | ++s; |
1124 | if (*s == '{') { | |
1125 | char* e = strchr(s, '}'); | |
1126 | ||
adaeee49 | 1127 | if (!e) { |
a0ed51b3 | 1128 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1129 | e = s; |
1130 | } | |
d008e5eb GS |
1131 | if (!utf) { |
1132 | dTHR; | |
1133 | if (ckWARN(WARN_UTF8)) | |
1134 | warner(WARN_UTF8, | |
1135 | "Use of \\x{} without utf8 declaration"); | |
1136 | } | |
a0ed51b3 | 1137 | /* note: utf always shorter than hex */ |
dfe13c55 GS |
1138 | d = (char*)uv_to_utf8((U8*)d, |
1139 | scan_hex(s + 1, e - s - 1, &len)); | |
a0ed51b3 LW |
1140 | s = e + 1; |
1141 | ||
1142 | } | |
1143 | else { | |
1144 | UV uv = (UV)scan_hex(s, 2, &len); | |
1145 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1146 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1147 | { | |
dfe13c55 | 1148 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1149 | } |
1150 | else { | |
d008e5eb GS |
1151 | if (uv >= 127 && UTF) { |
1152 | dTHR; | |
1153 | if (ckWARN(WARN_UTF8)) | |
1154 | warner(WARN_UTF8, | |
1155 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", | |
1156 | len,s,len,s); | |
1157 | } | |
a0ed51b3 LW |
1158 | *d++ = (char)uv; |
1159 | } | |
1160 | s += len; | |
1161 | } | |
79072805 | 1162 | continue; |
02aa26ce NT |
1163 | |
1164 | /* \c is a control character */ | |
79072805 LW |
1165 | case 'c': |
1166 | s++; | |
9d116dd7 JH |
1167 | #ifdef EBCDIC |
1168 | *d = *s++; | |
1169 | if (isLOWER(*d)) | |
1170 | *d = toUPPER(*d); | |
1171 | *d++ = toCTRL(*d); | |
1172 | #else | |
bbce6d69 | 1173 | len = *s++; |
1174 | *d++ = toCTRL(len); | |
9d116dd7 | 1175 | #endif |
79072805 | 1176 | continue; |
02aa26ce NT |
1177 | |
1178 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1179 | case 'b': |
1180 | *d++ = '\b'; | |
1181 | break; | |
1182 | case 'n': | |
1183 | *d++ = '\n'; | |
1184 | break; | |
1185 | case 'r': | |
1186 | *d++ = '\r'; | |
1187 | break; | |
1188 | case 'f': | |
1189 | *d++ = '\f'; | |
1190 | break; | |
1191 | case 't': | |
1192 | *d++ = '\t'; | |
1193 | break; | |
1194 | case 'e': | |
1195 | *d++ = '\033'; | |
1196 | break; | |
1197 | case 'a': | |
1198 | *d++ = '\007'; | |
1199 | break; | |
02aa26ce NT |
1200 | } /* end switch */ |
1201 | ||
79072805 LW |
1202 | s++; |
1203 | continue; | |
02aa26ce NT |
1204 | } /* end if (backslash) */ |
1205 | ||
79072805 | 1206 | *d++ = *s++; |
02aa26ce NT |
1207 | } /* while loop to process each character */ |
1208 | ||
1209 | /* terminate the string and set up the sv */ | |
79072805 | 1210 | *d = '\0'; |
463ee0b2 | 1211 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1212 | SvPOK_on(sv); |
1213 | ||
02aa26ce | 1214 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1215 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1216 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1217 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1218 | } |
02aa26ce | 1219 | |
9b599b2a | 1220 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1221 | if (s > PL_bufptr) { |
1222 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1223 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1224 | sv, Nullsv, |
3280af22 | 1225 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1226 | ? "tr" |
3280af22 | 1227 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1228 | ? "s" |
1229 | : "qq"))); | |
79072805 | 1230 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1231 | } else |
8990e307 | 1232 | SvREFCNT_dec(sv); |
79072805 LW |
1233 | return s; |
1234 | } | |
1235 | ||
1236 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
76e3520e | 1237 | STATIC int |
8ac85365 | 1238 | intuit_more(register char *s) |
79072805 | 1239 | { |
3280af22 | 1240 | if (PL_lex_brackets) |
79072805 LW |
1241 | return TRUE; |
1242 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1243 | return TRUE; | |
1244 | if (*s != '{' && *s != '[') | |
1245 | return FALSE; | |
3280af22 | 1246 | if (!PL_lex_inpat) |
79072805 LW |
1247 | return TRUE; |
1248 | ||
1249 | /* In a pattern, so maybe we have {n,m}. */ | |
1250 | if (*s == '{') { | |
1251 | s++; | |
1252 | if (!isDIGIT(*s)) | |
1253 | return TRUE; | |
1254 | while (isDIGIT(*s)) | |
1255 | s++; | |
1256 | if (*s == ',') | |
1257 | s++; | |
1258 | while (isDIGIT(*s)) | |
1259 | s++; | |
1260 | if (*s == '}') | |
1261 | return FALSE; | |
1262 | return TRUE; | |
1263 | ||
1264 | } | |
1265 | ||
1266 | /* On the other hand, maybe we have a character class */ | |
1267 | ||
1268 | s++; | |
1269 | if (*s == ']' || *s == '^') | |
1270 | return FALSE; | |
1271 | else { | |
1272 | int weight = 2; /* let's weigh the evidence */ | |
1273 | char seen[256]; | |
f27ffc4a | 1274 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1275 | char *send = strchr(s,']'); |
3280af22 | 1276 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1277 | |
1278 | if (!send) /* has to be an expression */ | |
1279 | return TRUE; | |
1280 | ||
1281 | Zero(seen,256,char); | |
1282 | if (*s == '$') | |
1283 | weight -= 3; | |
1284 | else if (isDIGIT(*s)) { | |
1285 | if (s[1] != ']') { | |
1286 | if (isDIGIT(s[1]) && s[2] == ']') | |
1287 | weight -= 10; | |
1288 | } | |
1289 | else | |
1290 | weight -= 100; | |
1291 | } | |
1292 | for (; s < send; s++) { | |
1293 | last_un_char = un_char; | |
1294 | un_char = (unsigned char)*s; | |
1295 | switch (*s) { | |
1296 | case '@': | |
1297 | case '&': | |
1298 | case '$': | |
1299 | weight -= seen[un_char] * 10; | |
834a4ddd | 1300 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1301 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1302 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1303 | weight -= 100; |
1304 | else | |
1305 | weight -= 10; | |
1306 | } | |
1307 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1308 | strchr("[#!%*<>()-=",s[1])) { |
1309 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1310 | weight -= 10; |
1311 | else | |
1312 | weight -= 1; | |
1313 | } | |
1314 | break; | |
1315 | case '\\': | |
1316 | un_char = 254; | |
1317 | if (s[1]) { | |
93a17b20 | 1318 | if (strchr("wds]",s[1])) |
79072805 LW |
1319 | weight += 100; |
1320 | else if (seen['\''] || seen['"']) | |
1321 | weight += 1; | |
93a17b20 | 1322 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1323 | weight += 40; |
1324 | else if (isDIGIT(s[1])) { | |
1325 | weight += 40; | |
1326 | while (s[1] && isDIGIT(s[1])) | |
1327 | s++; | |
1328 | } | |
1329 | } | |
1330 | else | |
1331 | weight += 100; | |
1332 | break; | |
1333 | case '-': | |
1334 | if (s[1] == '\\') | |
1335 | weight += 50; | |
93a17b20 | 1336 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1337 | weight += 30; |
93a17b20 | 1338 | if (strchr("zZ79~",s[1])) |
79072805 | 1339 | weight += 30; |
f27ffc4a GS |
1340 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1341 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1342 | break; |
1343 | default: | |
93a17b20 | 1344 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1345 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1346 | char *d = tmpbuf; | |
1347 | while (isALPHA(*s)) | |
1348 | *d++ = *s++; | |
1349 | *d = '\0'; | |
1350 | if (keyword(tmpbuf, d - tmpbuf)) | |
1351 | weight -= 150; | |
1352 | } | |
1353 | if (un_char == last_un_char + 1) | |
1354 | weight += 5; | |
1355 | weight -= seen[un_char]; | |
1356 | break; | |
1357 | } | |
1358 | seen[un_char]++; | |
1359 | } | |
1360 | if (weight >= 0) /* probably a character class */ | |
1361 | return FALSE; | |
1362 | } | |
1363 | ||
1364 | return TRUE; | |
1365 | } | |
ffed7fef | 1366 | |
76e3520e | 1367 | STATIC int |
8ac85365 | 1368 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1369 | { |
1370 | char *s = start + (*start == '$'); | |
3280af22 | 1371 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1372 | STRLEN len; |
1373 | GV* indirgv; | |
1374 | ||
1375 | if (gv) { | |
b6c543e3 | 1376 | CV *cv; |
a0d0e21e LW |
1377 | if (GvIO(gv)) |
1378 | return 0; | |
b6c543e3 IZ |
1379 | if ((cv = GvCVu(gv))) { |
1380 | char *proto = SvPVX(cv); | |
1381 | if (proto) { | |
1382 | if (*proto == ';') | |
1383 | proto++; | |
1384 | if (*proto == '*') | |
1385 | return 0; | |
1386 | } | |
1387 | } else | |
a0d0e21e LW |
1388 | gv = 0; |
1389 | } | |
8903cb82 | 1390 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e | 1391 | if (*start == '$') { |
3280af22 | 1392 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1393 | return 0; |
1394 | s = skipspace(s); | |
3280af22 NIS |
1395 | PL_bufptr = start; |
1396 | PL_expect = XREF; | |
a0d0e21e LW |
1397 | return *s == '(' ? FUNCMETH : METHOD; |
1398 | } | |
1399 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1400 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1401 | len -= 2; | |
1402 | tmpbuf[len] = '\0'; | |
1403 | goto bare_package; | |
1404 | } | |
1405 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1406 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1407 | return 0; |
1408 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1409 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1410 | s = skipspace(s); |
3280af22 | 1411 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1412 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1413 | bare_package: |
3280af22 | 1414 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1415 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1416 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1417 | PL_expect = XTERM; | |
a0d0e21e | 1418 | force_next(WORD); |
3280af22 | 1419 | PL_bufptr = s; |
a0d0e21e LW |
1420 | return *s == '(' ? FUNCMETH : METHOD; |
1421 | } | |
1422 | } | |
1423 | return 0; | |
1424 | } | |
1425 | ||
76e3520e | 1426 | STATIC char* |
8ac85365 | 1427 | incl_perldb(void) |
a0d0e21e | 1428 | { |
3280af22 | 1429 | if (PL_perldb) { |
76e3520e | 1430 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1431 | |
1432 | if (pdb) | |
1433 | return pdb; | |
61bb5906 | 1434 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1435 | return "BEGIN { require 'perl5db.pl' }"; |
1436 | } | |
1437 | return ""; | |
1438 | } | |
1439 | ||
1440 | ||
16d20bd9 AD |
1441 | /* Encoded script support. filter_add() effectively inserts a |
1442 | * 'pre-processing' function into the current source input stream. | |
1443 | * Note that the filter function only applies to the current source file | |
1444 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1445 | * | |
1446 | * The datasv parameter (which may be NULL) can be used to pass | |
1447 | * private data to this instance of the filter. The filter function | |
1448 | * can recover the SV using the FILTER_DATA macro and use it to | |
1449 | * store private buffers and state information. | |
1450 | * | |
1451 | * The supplied datasv parameter is upgraded to a PVIO type | |
1452 | * and the IoDIRP field is used to store the function pointer. | |
1453 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1454 | * private use must be set using malloc'd pointers. | |
1455 | */ | |
16d20bd9 AD |
1456 | |
1457 | SV * | |
8ac85365 | 1458 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1459 | { |
1460 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
80252599 | 1461 | PL_filter_debug = atoi((char*)datasv); |
16d20bd9 AD |
1462 | return NULL; |
1463 | } | |
3280af22 NIS |
1464 | if (!PL_rsfp_filters) |
1465 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1466 | if (!datasv) |
8c52afec | 1467 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1468 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1469 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1470 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
80252599 | 1471 | if (PL_filter_debug) { |
2d8e6c8d GS |
1472 | STRLEN n_a; |
1473 | warn("filter_add func %p (%s)", funcp, SvPV(datasv, n_a)); | |
1474 | } | |
3280af22 NIS |
1475 | av_unshift(PL_rsfp_filters, 1); |
1476 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1477 | return(datasv); |
1478 | } | |
1479 | ||
1480 | ||
1481 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1482 | void |
8ac85365 | 1483 | filter_del(filter_t funcp) |
16d20bd9 | 1484 | { |
80252599 | 1485 | if (PL_filter_debug) |
ff0cee69 | 1486 | warn("filter_del func %p", funcp); |
3280af22 | 1487 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1488 | return; |
1489 | /* if filter is on top of stack (usual case) just pop it off */ | |
677ca527 | 1490 | if (IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) == (DIR*)funcp){ |
a6c40364 | 1491 | IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) = NULL; |
3280af22 | 1492 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1493 | |
16d20bd9 AD |
1494 | return; |
1495 | } | |
1496 | /* we need to search for the correct entry and clear it */ | |
1497 | die("filter_del can only delete in reverse order (currently)"); | |
1498 | } | |
1499 | ||
1500 | ||
1501 | /* Invoke the n'th filter function for the current rsfp. */ | |
1502 | I32 | |
8ac85365 NIS |
1503 | filter_read(int idx, SV *buf_sv, int maxlen) |
1504 | ||
1505 | ||
1506 | /* 0 = read one text line */ | |
a0d0e21e | 1507 | { |
16d20bd9 AD |
1508 | filter_t funcp; |
1509 | SV *datasv = NULL; | |
e50aee73 | 1510 | |
3280af22 | 1511 | if (!PL_rsfp_filters) |
16d20bd9 | 1512 | return -1; |
3280af22 | 1513 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1514 | /* Provide a default input filter to make life easy. */ |
1515 | /* Note that we append to the line. This is handy. */ | |
80252599 | 1516 | if (PL_filter_debug) |
16d20bd9 AD |
1517 | warn("filter_read %d: from rsfp\n", idx); |
1518 | if (maxlen) { | |
1519 | /* Want a block */ | |
1520 | int len ; | |
1521 | int old_len = SvCUR(buf_sv) ; | |
1522 | ||
1523 | /* ensure buf_sv is large enough */ | |
1524 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1525 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1526 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1527 | return -1; /* error */ |
1528 | else | |
1529 | return 0 ; /* end of file */ | |
1530 | } | |
16d20bd9 AD |
1531 | SvCUR_set(buf_sv, old_len + len) ; |
1532 | } else { | |
1533 | /* Want a line */ | |
3280af22 NIS |
1534 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1535 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1536 | return -1; /* error */ |
1537 | else | |
1538 | return 0 ; /* end of file */ | |
1539 | } | |
16d20bd9 AD |
1540 | } |
1541 | return SvCUR(buf_sv); | |
1542 | } | |
1543 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1544 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
80252599 | 1545 | if (PL_filter_debug) |
16d20bd9 AD |
1546 | warn("filter_read %d: skipped (filter deleted)\n", idx); |
1547 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1548 | } | |
1549 | /* Get function pointer hidden within datasv */ | |
1550 | funcp = (filter_t)IoDIRP(datasv); | |
80252599 | 1551 | if (PL_filter_debug) { |
2d8e6c8d | 1552 | STRLEN n_a; |
ff0cee69 | 1553 | warn("filter_read %d: via function %p (%s)\n", |
2d8e6c8d GS |
1554 | idx, funcp, SvPV(datasv,n_a)); |
1555 | } | |
16d20bd9 AD |
1556 | /* Call function. The function is expected to */ |
1557 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1558 | /* Return: <0:error, =0:eof, >0:not eof */ |
1d583055 | 1559 | return (*funcp)(PERL_OBJECT_THIS_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1560 | } |
1561 | ||
76e3520e GS |
1562 | STATIC char * |
1563 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) | |
16d20bd9 | 1564 | { |
a868473f | 1565 | #ifdef WIN32FILTER |
3280af22 | 1566 | if (!PL_rsfp_filters) { |
a868473f NIS |
1567 | filter_add(win32_textfilter,NULL); |
1568 | } | |
1569 | #endif | |
3280af22 | 1570 | if (PL_rsfp_filters) { |
16d20bd9 | 1571 | |
55497cff | 1572 | if (!append) |
1573 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1574 | if (FILTER_READ(0, sv, 0) > 0) |
1575 | return ( SvPVX(sv) ) ; | |
1576 | else | |
1577 | return Nullch ; | |
1578 | } | |
9d116dd7 | 1579 | else |
fd049845 | 1580 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1581 | } |
1582 | ||
1583 | ||
748a9306 LW |
1584 | #ifdef DEBUGGING |
1585 | static char* exp_name[] = | |
a0d0e21e | 1586 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1587 | #endif |
463ee0b2 | 1588 | |
02aa26ce NT |
1589 | /* |
1590 | yylex | |
1591 | ||
1592 | Works out what to call the token just pulled out of the input | |
1593 | stream. The yacc parser takes care of taking the ops we return and | |
1594 | stitching them into a tree. | |
1595 | ||
1596 | Returns: | |
1597 | PRIVATEREF | |
1598 | ||
1599 | Structure: | |
1600 | if read an identifier | |
1601 | if we're in a my declaration | |
1602 | croak if they tried to say my($foo::bar) | |
1603 | build the ops for a my() declaration | |
1604 | if it's an access to a my() variable | |
1605 | are we in a sort block? | |
1606 | croak if my($a); $a <=> $b | |
1607 | build ops for access to a my() variable | |
1608 | if in a dq string, and they've said @foo and we can't find @foo | |
1609 | croak | |
1610 | build ops for a bareword | |
1611 | if we already built the token before, use it. | |
1612 | */ | |
1613 | ||
bee8cd07 | 1614 | int yylex(PERL_YYLEX_PARAM_DECL) |
378cc40b | 1615 | { |
11343788 | 1616 | dTHR; |
79072805 | 1617 | register char *s; |
378cc40b | 1618 | register char *d; |
79072805 | 1619 | register I32 tmp; |
463ee0b2 | 1620 | STRLEN len; |
161b471a NIS |
1621 | GV *gv = Nullgv; |
1622 | GV **gvp = 0; | |
a687059c | 1623 | |
a1a0e61e TD |
1624 | #ifdef USE_PURE_BISON |
1625 | yylval_pointer = lvalp; | |
1626 | yychar_pointer = lcharp; | |
1627 | #endif | |
1628 | ||
02aa26ce | 1629 | /* check if there's an identifier for us to look at */ |
3280af22 | 1630 | if (PL_pending_ident) { |
02aa26ce | 1631 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1632 | char pit = PL_pending_ident; |
1633 | PL_pending_ident = 0; | |
bbce6d69 | 1634 | |
02aa26ce NT |
1635 | /* if we're in a my(), we can't allow dynamics here. |
1636 | $foo'bar has already been turned into $foo::bar, so | |
1637 | just check for colons. | |
1638 | ||
1639 | if it's a legal name, the OP is a PADANY. | |
1640 | */ | |
3280af22 NIS |
1641 | if (PL_in_my) { |
1642 | if (strchr(PL_tokenbuf,':')) | |
dce40276 | 1643 | yyerror(form(PL_no_myglob,PL_tokenbuf)); |
02aa26ce | 1644 | |
bbce6d69 | 1645 | yylval.opval = newOP(OP_PADANY, 0); |
3280af22 | 1646 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); |
bbce6d69 | 1647 | return PRIVATEREF; |
1648 | } | |
1649 | ||
02aa26ce NT |
1650 | /* |
1651 | build the ops for accesses to a my() variable. | |
1652 | ||
1653 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1654 | then used in a comparison. This catches most, but not | |
1655 | all cases. For instance, it catches | |
1656 | sort { my($a); $a <=> $b } | |
1657 | but not | |
1658 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1659 | (although why you'd do that is anyone's guess). | |
1660 | */ | |
1661 | ||
3280af22 | 1662 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1663 | #ifdef USE_THREADS |
54b9620d | 1664 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1665 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1666 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1667 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1668 | { |
2faa37cc | 1669 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1670 | yylval.opval->op_targ = tmp; |
1671 | return PRIVATEREF; | |
1672 | } | |
1673 | #endif /* USE_THREADS */ | |
3280af22 | 1674 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
02aa26ce | 1675 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
1676 | if (PL_last_lop_op == OP_SORT && |
1677 | PL_tokenbuf[0] == '$' && | |
1678 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
1679 | && !PL_tokenbuf[2]) | |
bbce6d69 | 1680 | { |
3280af22 NIS |
1681 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
1682 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
1683 | d++) |
1684 | { | |
1685 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1686 | croak("Can't use \"my %s\" in sort comparison", | |
3280af22 | 1687 | PL_tokenbuf); |
a863c7d1 | 1688 | } |
bbce6d69 | 1689 | } |
1690 | } | |
bbce6d69 | 1691 | |
a863c7d1 MB |
1692 | yylval.opval = newOP(OP_PADANY, 0); |
1693 | yylval.opval->op_targ = tmp; | |
1694 | return PRIVATEREF; | |
1695 | } | |
bbce6d69 | 1696 | } |
1697 | ||
02aa26ce NT |
1698 | /* |
1699 | Whine if they've said @foo in a doublequoted string, | |
1700 | and @foo isn't a variable we can find in the symbol | |
1701 | table. | |
1702 | */ | |
3280af22 NIS |
1703 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
1704 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
1705 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
46fc3d4c | 1706 | yyerror(form("In string, %s now must be written as \\%s", |
3280af22 | 1707 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 1708 | } |
1709 | ||
02aa26ce | 1710 | /* build ops for a bareword */ |
3280af22 | 1711 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 1712 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
1713 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
1714 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
1715 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 1716 | : SVt_PVHV)); |
1717 | return WORD; | |
1718 | } | |
1719 | ||
02aa26ce NT |
1720 | /* no identifier pending identification */ |
1721 | ||
3280af22 | 1722 | switch (PL_lex_state) { |
79072805 LW |
1723 | #ifdef COMMENTARY |
1724 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1725 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1726 | break; | |
1727 | #endif | |
1728 | ||
02aa26ce | 1729 | /* when we're already built the next token, just pull it out the queue */ |
79072805 | 1730 | case LEX_KNOWNEXT: |
3280af22 NIS |
1731 | PL_nexttoke--; |
1732 | yylval = PL_nextval[PL_nexttoke]; | |
1733 | if (!PL_nexttoke) { | |
1734 | PL_lex_state = PL_lex_defer; | |
1735 | PL_expect = PL_lex_expect; | |
1736 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 1737 | } |
3280af22 | 1738 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 1739 | |
02aa26ce | 1740 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 1741 | when we get here, PL_bufptr is at the \ |
02aa26ce | 1742 | */ |
79072805 LW |
1743 | case LEX_INTERPCASEMOD: |
1744 | #ifdef DEBUGGING | |
3280af22 | 1745 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
463ee0b2 | 1746 | croak("panic: INTERPCASEMOD"); |
79072805 | 1747 | #endif |
02aa26ce | 1748 | /* handle \E or end of string */ |
3280af22 | 1749 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 1750 | char oldmod; |
02aa26ce NT |
1751 | |
1752 | /* if at a \E */ | |
3280af22 NIS |
1753 | if (PL_lex_casemods) { |
1754 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
1755 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 1756 | |
3280af22 NIS |
1757 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
1758 | PL_bufptr += 2; | |
1759 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 1760 | } |
79072805 LW |
1761 | return ')'; |
1762 | } | |
3280af22 NIS |
1763 | if (PL_bufptr != PL_bufend) |
1764 | PL_bufptr += 2; | |
1765 | PL_lex_state = LEX_INTERPCONCAT; | |
e4bfbdd4 | 1766 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1767 | } |
1768 | else { | |
3280af22 | 1769 | s = PL_bufptr + 1; |
79072805 LW |
1770 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
1771 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 1772 | if (strchr("LU", *s) && |
3280af22 | 1773 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 1774 | { |
3280af22 | 1775 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
1776 | return ')'; |
1777 | } | |
3280af22 NIS |
1778 | if (PL_lex_casemods > 10) { |
1779 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
1780 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 1781 | SAVEFREEPV(newlb); |
3280af22 | 1782 | PL_lex_casestack = newlb; |
a0d0e21e LW |
1783 | } |
1784 | } | |
3280af22 NIS |
1785 | PL_lex_casestack[PL_lex_casemods++] = *s; |
1786 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
1787 | PL_lex_state = LEX_INTERPCONCAT; | |
1788 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
1789 | force_next('('); |
1790 | if (*s == 'l') | |
3280af22 | 1791 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 1792 | else if (*s == 'u') |
3280af22 | 1793 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 1794 | else if (*s == 'L') |
3280af22 | 1795 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 1796 | else if (*s == 'U') |
3280af22 | 1797 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 1798 | else if (*s == 'Q') |
3280af22 | 1799 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 1800 | else |
463ee0b2 | 1801 | croak("panic: yylex"); |
3280af22 | 1802 | PL_bufptr = s + 1; |
79072805 | 1803 | force_next(FUNC); |
3280af22 NIS |
1804 | if (PL_lex_starts) { |
1805 | s = PL_bufptr; | |
1806 | PL_lex_starts = 0; | |
79072805 LW |
1807 | Aop(OP_CONCAT); |
1808 | } | |
1809 | else | |
e4bfbdd4 | 1810 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1811 | } |
1812 | ||
55497cff | 1813 | case LEX_INTERPPUSH: |
1814 | return sublex_push(); | |
1815 | ||
79072805 | 1816 | case LEX_INTERPSTART: |
3280af22 | 1817 | if (PL_bufptr == PL_bufend) |
79072805 | 1818 | return sublex_done(); |
3280af22 NIS |
1819 | PL_expect = XTERM; |
1820 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
1821 | PL_lex_state = LEX_INTERPNORMAL; | |
1822 | if (PL_lex_dojoin) { | |
1823 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 1824 | force_next(','); |
554b3eca | 1825 | #ifdef USE_THREADS |
533c011a NIS |
1826 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
1827 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
1828 | force_next(PRIVATEREF); |
1829 | #else | |
a0d0e21e | 1830 | force_ident("\"", '$'); |
554b3eca | 1831 | #endif /* USE_THREADS */ |
3280af22 | 1832 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1833 | force_next('$'); |
3280af22 | 1834 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1835 | force_next('('); |
3280af22 | 1836 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
1837 | force_next(FUNC); |
1838 | } | |
3280af22 NIS |
1839 | if (PL_lex_starts++) { |
1840 | s = PL_bufptr; | |
79072805 LW |
1841 | Aop(OP_CONCAT); |
1842 | } | |
e4bfbdd4 | 1843 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1844 | |
1845 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
1846 | if (intuit_more(PL_bufptr)) { |
1847 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
1848 | break; |
1849 | } | |
1850 | /* FALL THROUGH */ | |
1851 | ||
1852 | case LEX_INTERPEND: | |
3280af22 NIS |
1853 | if (PL_lex_dojoin) { |
1854 | PL_lex_dojoin = FALSE; | |
1855 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1856 | return ')'; |
1857 | } | |
43a16006 | 1858 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 1859 | && SvEVALED(PL_lex_repl)) |
43a16006 | 1860 | { |
e9fa98b2 HS |
1861 | if (PL_bufptr != PL_bufend) |
1862 | croak("Bad evalled substitution pattern"); | |
1863 | PL_lex_repl = Nullsv; | |
1864 | } | |
79072805 LW |
1865 | /* FALLTHROUGH */ |
1866 | case LEX_INTERPCONCAT: | |
1867 | #ifdef DEBUGGING | |
3280af22 | 1868 | if (PL_lex_brackets) |
463ee0b2 | 1869 | croak("panic: INTERPCONCAT"); |
79072805 | 1870 | #endif |
3280af22 | 1871 | if (PL_bufptr == PL_bufend) |
79072805 LW |
1872 | return sublex_done(); |
1873 | ||
3280af22 NIS |
1874 | if (SvIVX(PL_linestr) == '\'') { |
1875 | SV *sv = newSVsv(PL_linestr); | |
1876 | if (!PL_lex_inpat) | |
76e3520e | 1877 | sv = tokeq(sv); |
3280af22 | 1878 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 1879 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 1880 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 1881 | s = PL_bufend; |
79072805 LW |
1882 | } |
1883 | else { | |
3280af22 | 1884 | s = scan_const(PL_bufptr); |
79072805 | 1885 | if (*s == '\\') |
3280af22 | 1886 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 1887 | else |
3280af22 | 1888 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
1889 | } |
1890 | ||
3280af22 NIS |
1891 | if (s != PL_bufptr) { |
1892 | PL_nextval[PL_nexttoke] = yylval; | |
1893 | PL_expect = XTERM; | |
79072805 | 1894 | force_next(THING); |
3280af22 | 1895 | if (PL_lex_starts++) |
79072805 LW |
1896 | Aop(OP_CONCAT); |
1897 | else { | |
3280af22 | 1898 | PL_bufptr = s; |
e4bfbdd4 | 1899 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1900 | } |
1901 | } | |
1902 | ||
e4bfbdd4 | 1903 | return yylex(PERL_YYLEX_PARAM); |
a0d0e21e | 1904 | case LEX_FORMLINE: |
3280af22 NIS |
1905 | PL_lex_state = LEX_NORMAL; |
1906 | s = scan_formline(PL_bufptr); | |
1907 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
1908 | goto rightbracket; |
1909 | OPERATOR(';'); | |
79072805 LW |
1910 | } |
1911 | ||
3280af22 NIS |
1912 | s = PL_bufptr; |
1913 | PL_oldoldbufptr = PL_oldbufptr; | |
1914 | PL_oldbufptr = s; | |
79072805 | 1915 | DEBUG_p( { |
3280af22 | 1916 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[PL_expect], s); |
79072805 | 1917 | } ) |
463ee0b2 LW |
1918 | |
1919 | retry: | |
378cc40b LW |
1920 | switch (*s) { |
1921 | default: | |
834a4ddd LW |
1922 | if (isIDFIRST_lazy(s)) |
1923 | goto keylookup; | |
a0ed51b3 | 1924 | croak("Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
1925 | case 4: |
1926 | case 26: | |
1927 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1928 | case 0: |
3280af22 NIS |
1929 | if (!PL_rsfp) { |
1930 | PL_last_uni = 0; | |
1931 | PL_last_lop = 0; | |
1932 | if (PL_lex_brackets) | |
d98d5fff | 1933 | yyerror("Missing right curly or square bracket"); |
79072805 | 1934 | TOKEN(0); |
463ee0b2 | 1935 | } |
3280af22 | 1936 | if (s++ < PL_bufend) |
a687059c | 1937 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
1938 | PL_last_uni = 0; |
1939 | PL_last_lop = 0; | |
1940 | if (!PL_in_eval && !PL_preambled) { | |
1941 | PL_preambled = TRUE; | |
1942 | sv_setpv(PL_linestr,incl_perldb()); | |
1943 | if (SvCUR(PL_linestr)) | |
1944 | sv_catpv(PL_linestr,";"); | |
1945 | if (PL_preambleav){ | |
1946 | while(AvFILLp(PL_preambleav) >= 0) { | |
1947 | SV *tmpsv = av_shift(PL_preambleav); | |
1948 | sv_catsv(PL_linestr, tmpsv); | |
1949 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 1950 | sv_free(tmpsv); |
1951 | } | |
3280af22 NIS |
1952 | sv_free((SV*)PL_preambleav); |
1953 | PL_preambleav = NULL; | |
91b7def8 | 1954 | } |
3280af22 NIS |
1955 | if (PL_minus_n || PL_minus_p) { |
1956 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
1957 | if (PL_minus_l) | |
1958 | sv_catpv(PL_linestr,"chomp;"); | |
1959 | if (PL_minus_a) { | |
8fd239a7 CS |
1960 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
1961 | if (gv) | |
1962 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
1963 | if (PL_minus_F) { |
1964 | if (strchr("/'\"", *PL_splitstr) | |
1965 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
1966 | sv_catpvf(PL_linestr, "@F=split(%s);", PL_splitstr); | |
54310121 | 1967 | else { |
1968 | char delim; | |
1969 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 1970 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 1971 | delim = *s; |
3280af22 | 1972 | sv_catpvf(PL_linestr, "@F=split(%s%c", |
46fc3d4c | 1973 | "q" + (delim == '\''), delim); |
3280af22 | 1974 | for (s = PL_splitstr; *s; s++) { |
54310121 | 1975 | if (*s == '\\') |
3280af22 NIS |
1976 | sv_catpvn(PL_linestr, "\\", 1); |
1977 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 1978 | } |
3280af22 | 1979 | sv_catpvf(PL_linestr, "%c);", delim); |
54310121 | 1980 | } |
2304df62 AD |
1981 | } |
1982 | else | |
3280af22 | 1983 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 1984 | } |
79072805 | 1985 | } |
3280af22 NIS |
1986 | sv_catpv(PL_linestr, "\n"); |
1987 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1988 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1989 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
1990 | SV *sv = NEWSV(85,0); |
1991 | ||
1992 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
1993 | sv_setsv(sv,PL_linestr); |
1994 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a0d0e21e | 1995 | } |
79072805 | 1996 | goto retry; |
a687059c | 1997 | } |
e929a76b | 1998 | do { |
3280af22 | 1999 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2000 | fake_eof: |
3280af22 NIS |
2001 | if (PL_rsfp) { |
2002 | if (PL_preprocess && !PL_in_eval) | |
2003 | (void)PerlProc_pclose(PL_rsfp); | |
2004 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2005 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2006 | else |
3280af22 NIS |
2007 | (void)PerlIO_close(PL_rsfp); |
2008 | PL_rsfp = Nullfp; | |
4a9ae47a | 2009 | PL_doextract = FALSE; |
395c3793 | 2010 | } |
3280af22 NIS |
2011 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2012 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2013 | sv_catpv(PL_linestr,";}"); | |
2014 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2015 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2016 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2017 | goto retry; |
2018 | } | |
3280af22 NIS |
2019 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2020 | sv_setpv(PL_linestr,""); | |
79072805 | 2021 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2022 | } |
3280af22 | 2023 | if (PL_doextract) { |
a0d0e21e | 2024 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2025 | PL_doextract = FALSE; |
a0d0e21e LW |
2026 | |
2027 | /* Incest with pod. */ | |
2028 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2029 | sv_setpv(PL_linestr, ""); |
2030 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2031 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2032 | PL_doextract = FALSE; | |
a0d0e21e LW |
2033 | } |
2034 | } | |
463ee0b2 | 2035 | incline(s); |
3280af22 NIS |
2036 | } while (PL_doextract); |
2037 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2038 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2039 | SV *sv = NEWSV(85,0); |
a687059c | 2040 | |
93a17b20 | 2041 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
2042 | sv_setsv(sv,PL_linestr); |
2043 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a687059c | 2044 | } |
3280af22 NIS |
2045 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
2046 | if (PL_curcop->cop_line == 1) { | |
2047 | while (s < PL_bufend && isSPACE(*s)) | |
79072805 | 2048 | s++; |
a0d0e21e | 2049 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2050 | s++; |
44a8e56a | 2051 | d = Nullch; |
3280af22 | 2052 | if (!PL_in_eval) { |
44a8e56a | 2053 | if (*s == '#' && *(s+1) == '!') |
2054 | d = s + 2; | |
2055 | #ifdef ALTERNATE_SHEBANG | |
2056 | else { | |
2057 | static char as[] = ALTERNATE_SHEBANG; | |
2058 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2059 | d = s + (sizeof(as) - 1); | |
2060 | } | |
2061 | #endif /* ALTERNATE_SHEBANG */ | |
2062 | } | |
2063 | if (d) { | |
b8378b72 | 2064 | char *ipath; |
774d564b | 2065 | char *ipathend; |
b8378b72 | 2066 | |
774d564b | 2067 | while (isSPACE(*d)) |
b8378b72 CS |
2068 | d++; |
2069 | ipath = d; | |
774d564b | 2070 | while (*d && !isSPACE(*d)) |
2071 | d++; | |
2072 | ipathend = d; | |
2073 | ||
2074 | #ifdef ARG_ZERO_IS_SCRIPT | |
2075 | if (ipathend > ipath) { | |
2076 | /* | |
2077 | * HP-UX (at least) sets argv[0] to the script name, | |
2078 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2079 | * at least, set argv[0] to the basename of the Perl | |
2080 | * interpreter. So, having found "#!", we'll set it right. | |
2081 | */ | |
2082 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2083 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
6b88bc9c | 2084 | if (sv_eq(x, GvSV(PL_curcop->cop_filegv))) { |
774d564b | 2085 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2086 | SvSETMAGIC(x); |
2087 | } | |
774d564b | 2088 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2089 | } |
774d564b | 2090 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2091 | |
2092 | /* | |
2093 | * Look for options. | |
2094 | */ | |
748a9306 LW |
2095 | d = instr(s,"perl -"); |
2096 | if (!d) | |
2097 | d = instr(s,"perl"); | |
44a8e56a | 2098 | #ifdef ALTERNATE_SHEBANG |
2099 | /* | |
2100 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2101 | * character that can be part of a Perl expression, then if | |
2102 | * we see it but not "perl", we're probably looking at the | |
2103 | * start of Perl code, not a request to hand off to some | |
2104 | * other interpreter. Similarly, if "perl" is there, but | |
2105 | * not in the first 'word' of the line, we assume the line | |
2106 | * contains the start of the Perl program. | |
44a8e56a | 2107 | */ |
2108 | if (d && *s != '#') { | |
774d564b | 2109 | char *c = ipath; |
44a8e56a | 2110 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2111 | c++; | |
2112 | if (c < d) | |
2113 | d = Nullch; /* "perl" not in first word; ignore */ | |
2114 | else | |
2115 | *s = '#'; /* Don't try to parse shebang line */ | |
2116 | } | |
774d564b | 2117 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2118 | if (!d && |
44a8e56a | 2119 | *s == '#' && |
774d564b | 2120 | ipathend > ipath && |
3280af22 | 2121 | !PL_minus_c && |
748a9306 | 2122 | !instr(s,"indir") && |
3280af22 | 2123 | instr(PL_origargv[0],"perl")) |
748a9306 | 2124 | { |
9f68db38 | 2125 | char **newargv; |
9f68db38 | 2126 | |
774d564b | 2127 | *ipathend = '\0'; |
2128 | s = ipathend + 1; | |
3280af22 | 2129 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2130 | s++; |
3280af22 NIS |
2131 | if (s < PL_bufend) { |
2132 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2133 | newargv[1] = s; |
3280af22 | 2134 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2135 | s++; |
2136 | *s = '\0'; | |
3280af22 | 2137 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2138 | } |
2139 | else | |
3280af22 | 2140 | newargv = PL_origargv; |
774d564b | 2141 | newargv[0] = ipath; |
80252599 | 2142 | PerlProc_execv(ipath, newargv); |
774d564b | 2143 | croak("Can't exec %s", ipath); |
9f68db38 | 2144 | } |
748a9306 | 2145 | if (d) { |
3280af22 NIS |
2146 | U32 oldpdb = PL_perldb; |
2147 | bool oldn = PL_minus_n; | |
2148 | bool oldp = PL_minus_p; | |
748a9306 LW |
2149 | |
2150 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2151 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2152 | |
2153 | if (*d++ == '-') { | |
8cc95fdb | 2154 | do { |
2155 | if (*d == 'M' || *d == 'm') { | |
2156 | char *m = d; | |
2157 | while (*d && !isSPACE(*d)) d++; | |
2158 | croak("Too late for \"-%.*s\" option", | |
2159 | (int)(d - m), m); | |
2160 | } | |
2161 | d = moreswitches(d); | |
2162 | } while (d); | |
84902520 | 2163 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2164 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2165 | /* if we have already added "LINE: while (<>) {", |
2166 | we must not do it again */ | |
748a9306 | 2167 | { |
3280af22 NIS |
2168 | sv_setpv(PL_linestr, ""); |
2169 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2170 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2171 | PL_preambled = FALSE; | |
84902520 | 2172 | if (PERLDB_LINE) |
3280af22 | 2173 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2174 | goto retry; |
2175 | } | |
a0d0e21e | 2176 | } |
79072805 | 2177 | } |
9f68db38 | 2178 | } |
79072805 | 2179 | } |
3280af22 NIS |
2180 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2181 | PL_bufptr = s; | |
2182 | PL_lex_state = LEX_FORMLINE; | |
e4bfbdd4 | 2183 | return yylex(PERL_YYLEX_PARAM); |
ae986130 | 2184 | } |
378cc40b | 2185 | goto retry; |
4fdae800 | 2186 | case '\r': |
6a27c188 | 2187 | #ifdef PERL_STRICT_CR |
54310121 | 2188 | warn("Illegal character \\%03o (carriage return)", '\r'); |
2189 | croak( | |
2190 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 2191 | #endif |
4fdae800 | 2192 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2193 | s++; |
2194 | goto retry; | |
378cc40b | 2195 | case '#': |
e929a76b | 2196 | case '\n': |
3280af22 NIS |
2197 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2198 | d = PL_bufend; | |
a687059c | 2199 | while (s < d && *s != '\n') |
378cc40b | 2200 | s++; |
0f85fab0 | 2201 | if (s < d) |
378cc40b | 2202 | s++; |
463ee0b2 | 2203 | incline(s); |
3280af22 NIS |
2204 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2205 | PL_bufptr = s; | |
2206 | PL_lex_state = LEX_FORMLINE; | |
e4bfbdd4 | 2207 | return yylex(PERL_YYLEX_PARAM); |
a687059c | 2208 | } |
378cc40b | 2209 | } |
a687059c | 2210 | else { |
378cc40b | 2211 | *s = '\0'; |
3280af22 | 2212 | PL_bufend = s; |
a687059c | 2213 | } |
378cc40b LW |
2214 | goto retry; |
2215 | case '-': | |
79072805 | 2216 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2217 | s++; |
3280af22 | 2218 | PL_bufptr = s; |
748a9306 LW |
2219 | tmp = *s++; |
2220 | ||
3280af22 | 2221 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2222 | s++; |
2223 | ||
2224 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2225 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2226 | OPERATOR('-'); /* unary minus */ |
2227 | } | |
3280af22 NIS |
2228 | PL_last_uni = PL_oldbufptr; |
2229 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2230 | switch (tmp) { |
79072805 LW |
2231 | case 'r': FTST(OP_FTEREAD); |
2232 | case 'w': FTST(OP_FTEWRITE); | |
2233 | case 'x': FTST(OP_FTEEXEC); | |
2234 | case 'o': FTST(OP_FTEOWNED); | |
2235 | case 'R': FTST(OP_FTRREAD); | |
2236 | case 'W': FTST(OP_FTRWRITE); | |
2237 | case 'X': FTST(OP_FTREXEC); | |
2238 | case 'O': FTST(OP_FTROWNED); | |
2239 | case 'e': FTST(OP_FTIS); | |
2240 | case 'z': FTST(OP_FTZERO); | |
2241 | case 's': FTST(OP_FTSIZE); | |
2242 | case 'f': FTST(OP_FTFILE); | |
2243 | case 'd': FTST(OP_FTDIR); | |
2244 | case 'l': FTST(OP_FTLINK); | |
2245 | case 'p': FTST(OP_FTPIPE); | |
2246 | case 'S': FTST(OP_FTSOCK); | |
2247 | case 'u': FTST(OP_FTSUID); | |
2248 | case 'g': FTST(OP_FTSGID); | |
2249 | case 'k': FTST(OP_FTSVTX); | |
2250 | case 'b': FTST(OP_FTBLK); | |
2251 | case 'c': FTST(OP_FTCHR); | |
2252 | case 't': FTST(OP_FTTTY); | |
2253 | case 'T': FTST(OP_FTTEXT); | |
2254 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2255 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2256 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2257 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2258 | default: |
ff0cee69 | 2259 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2260 | break; |
2261 | } | |
2262 | } | |
a687059c LW |
2263 | tmp = *s++; |
2264 | if (*s == tmp) { | |
2265 | s++; | |
3280af22 | 2266 | if (PL_expect == XOPERATOR) |
79072805 LW |
2267 | TERM(POSTDEC); |
2268 | else | |
2269 | OPERATOR(PREDEC); | |
2270 | } | |
2271 | else if (*s == '>') { | |
2272 | s++; | |
2273 | s = skipspace(s); | |
834a4ddd | 2274 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2275 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2276 | TOKEN(ARROW); |
79072805 | 2277 | } |
748a9306 LW |
2278 | else if (*s == '$') |
2279 | OPERATOR(ARROW); | |
463ee0b2 | 2280 | else |
748a9306 | 2281 | TERM(ARROW); |
a687059c | 2282 | } |
3280af22 | 2283 | if (PL_expect == XOPERATOR) |
79072805 LW |
2284 | Aop(OP_SUBTRACT); |
2285 | else { | |
3280af22 | 2286 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2287 | check_uni(); |
79072805 | 2288 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2289 | } |
79072805 | 2290 | |
378cc40b | 2291 | case '+': |
a687059c LW |
2292 | tmp = *s++; |
2293 | if (*s == tmp) { | |
378cc40b | 2294 | s++; |
3280af22 | 2295 | if (PL_expect == XOPERATOR) |
79072805 LW |
2296 | TERM(POSTINC); |
2297 | else | |
2298 | OPERATOR(PREINC); | |
378cc40b | 2299 | } |
3280af22 | 2300 | if (PL_expect == XOPERATOR) |
79072805 LW |
2301 | Aop(OP_ADD); |
2302 | else { | |
3280af22 | 2303 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2304 | check_uni(); |
a687059c | 2305 | OPERATOR('+'); |
2f3197b3 | 2306 | } |
a687059c | 2307 | |
378cc40b | 2308 | case '*': |
3280af22 NIS |
2309 | if (PL_expect != XOPERATOR) { |
2310 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2311 | PL_expect = XOPERATOR; | |
2312 | force_ident(PL_tokenbuf, '*'); | |
2313 | if (!*PL_tokenbuf) | |
a0d0e21e | 2314 | PREREF('*'); |
79072805 | 2315 | TERM('*'); |
a687059c | 2316 | } |
79072805 LW |
2317 | s++; |
2318 | if (*s == '*') { | |
a687059c | 2319 | s++; |
79072805 | 2320 | PWop(OP_POW); |
a687059c | 2321 | } |
79072805 LW |
2322 | Mop(OP_MULTIPLY); |
2323 | ||
378cc40b | 2324 | case '%': |
3280af22 | 2325 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2326 | ++s; |
2327 | Mop(OP_MODULO); | |
a687059c | 2328 | } |
3280af22 NIS |
2329 | PL_tokenbuf[0] = '%'; |
2330 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2331 | if (!PL_tokenbuf[1]) { | |
2332 | if (s == PL_bufend) | |
bbce6d69 | 2333 | yyerror("Final % should be \\% or %name"); |
2334 | PREREF('%'); | |
a687059c | 2335 | } |
3280af22 | 2336 | PL_pending_ident = '%'; |
bbce6d69 | 2337 | TERM('%'); |
a687059c | 2338 | |
378cc40b | 2339 | case '^': |
79072805 | 2340 | s++; |
a0d0e21e | 2341 | BOop(OP_BIT_XOR); |
79072805 | 2342 | case '[': |
3280af22 | 2343 | PL_lex_brackets++; |
79072805 | 2344 | /* FALL THROUGH */ |
378cc40b | 2345 | case '~': |
378cc40b | 2346 | case ',': |
378cc40b LW |
2347 | tmp = *s++; |
2348 | OPERATOR(tmp); | |
a0d0e21e LW |
2349 | case ':': |
2350 | if (s[1] == ':') { | |
2351 | len = 0; | |
2352 | goto just_a_word; | |
2353 | } | |
2354 | s++; | |
2355 | OPERATOR(':'); | |
8990e307 LW |
2356 | case '(': |
2357 | s++; | |
3280af22 NIS |
2358 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2359 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2360 | else |
3280af22 | 2361 | PL_expect = XTERM; |
a0d0e21e | 2362 | TOKEN('('); |
378cc40b | 2363 | case ';': |
3280af22 NIS |
2364 | if (PL_curcop->cop_line < PL_copline) |
2365 | PL_copline = PL_curcop->cop_line; | |
378cc40b LW |
2366 | tmp = *s++; |
2367 | OPERATOR(tmp); | |
2368 | case ')': | |
378cc40b | 2369 | tmp = *s++; |
16d20bd9 AD |
2370 | s = skipspace(s); |
2371 | if (*s == '{') | |
2372 | PREBLOCK(tmp); | |
378cc40b | 2373 | TERM(tmp); |
79072805 LW |
2374 | case ']': |
2375 | s++; | |
3280af22 | 2376 | if (PL_lex_brackets <= 0) |
d98d5fff | 2377 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2378 | else |
3280af22 NIS |
2379 | --PL_lex_brackets; |
2380 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2381 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2382 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2383 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2384 | } |
2385 | } | |
4633a7c4 | 2386 | TERM(']'); |
79072805 LW |
2387 | case '{': |
2388 | leftbracket: | |
79072805 | 2389 | s++; |
3280af22 NIS |
2390 | if (PL_lex_brackets > 100) { |
2391 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2392 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2393 | SAVEFREEPV(newlb); |
3280af22 | 2394 | PL_lex_brackstack = newlb; |
8990e307 LW |
2395 | } |
2396 | } | |
3280af22 | 2397 | switch (PL_expect) { |
a0d0e21e | 2398 | case XTERM: |
3280af22 | 2399 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2400 | s--; |
2401 | PRETERMBLOCK(DO); | |
2402 | } | |
3280af22 NIS |
2403 | if (PL_oldoldbufptr == PL_last_lop) |
2404 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2405 | else |
3280af22 | 2406 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2407 | OPERATOR(HASHBRACK); |
a0d0e21e | 2408 | case XOPERATOR: |
3280af22 | 2409 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2410 | s++; |
44a8e56a | 2411 | d = s; |
3280af22 NIS |
2412 | PL_tokenbuf[0] = '\0'; |
2413 | if (d < PL_bufend && *d == '-') { | |
2414 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2415 | d++; |
3280af22 | 2416 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2417 | d++; |
2418 | } | |
834a4ddd | 2419 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2420 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2421 | FALSE, &len); |
3280af22 | 2422 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2423 | d++; |
2424 | if (*d == '}') { | |
3280af22 | 2425 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2426 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2427 | if (minus) | |
2428 | force_next('-'); | |
748a9306 LW |
2429 | } |
2430 | } | |
2431 | /* FALL THROUGH */ | |
2432 | case XBLOCK: | |
3280af22 NIS |
2433 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2434 | PL_expect = XSTATE; | |
a0d0e21e LW |
2435 | break; |
2436 | case XTERMBLOCK: | |
3280af22 NIS |
2437 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2438 | PL_expect = XSTATE; | |
a0d0e21e LW |
2439 | break; |
2440 | default: { | |
2441 | char *t; | |
3280af22 NIS |
2442 | if (PL_oldoldbufptr == PL_last_lop) |
2443 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2444 | else |
3280af22 | 2445 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2446 | s = skipspace(s); |
09ecc4b6 | 2447 | if (*s == '}') |
a0d0e21e | 2448 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2449 | /* This hack serves to disambiguate a pair of curlies |
2450 | * as being a block or an anon hash. Normally, expectation | |
2451 | * determines that, but in cases where we're not in a | |
2452 | * position to expect anything in particular (like inside | |
2453 | * eval"") we have to resolve the ambiguity. This code | |
2454 | * covers the case where the first term in the curlies is a | |
2455 | * quoted string. Most other cases need to be explicitly | |
2456 | * disambiguated by prepending a `+' before the opening | |
2457 | * curly in order to force resolution as an anon hash. | |
2458 | * | |
2459 | * XXX should probably propagate the outer expectation | |
2460 | * into eval"" to rely less on this hack, but that could | |
2461 | * potentially break current behavior of eval"". | |
2462 | * GSAR 97-07-21 | |
2463 | */ | |
2464 | t = s; | |
2465 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2466 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2467 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2468 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2469 | t++; | |
2470 | t++; | |
a0d0e21e | 2471 | } |
b8a4b1be | 2472 | else if (*s == 'q') { |
3280af22 | 2473 | if (++t < PL_bufend |
b8a4b1be | 2474 | && (!isALNUM(*t) |
3280af22 | 2475 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2476 | && !isALNUM(*t)))) { |
2477 | char *tmps; | |
2478 | char open, close, term; | |
2479 | I32 brackets = 1; | |
2480 | ||
3280af22 | 2481 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2482 | t++; |
2483 | term = *t; | |
2484 | open = term; | |
2485 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2486 | term = tmps[5]; | |
2487 | close = term; | |
2488 | if (open == close) | |
3280af22 NIS |
2489 | for (t++; t < PL_bufend; t++) { |
2490 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2491 | t++; |
6d07e5e9 | 2492 | else if (*t == open) |
b8a4b1be GS |
2493 | break; |
2494 | } | |
2495 | else | |
3280af22 NIS |
2496 | for (t++; t < PL_bufend; t++) { |
2497 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2498 | t++; |
6d07e5e9 | 2499 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2500 | break; |
2501 | else if (*t == open) | |
2502 | brackets++; | |
2503 | } | |
2504 | } | |
2505 | t++; | |
a0d0e21e | 2506 | } |
834a4ddd LW |
2507 | else if (isIDFIRST_lazy(s)) { |
2508 | for (t++; t < PL_bufend && isALNUM_lazy(t); t++) ; | |
a0d0e21e | 2509 | } |
3280af22 | 2510 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2511 | t++; |
b8a4b1be GS |
2512 | /* if comma follows first term, call it an anon hash */ |
2513 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2514 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2515 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2516 | OPERATOR(HASHBRACK); |
3280af22 | 2517 | if (PL_expect == XREF) |
834a4ddd | 2518 | PL_expect = XSTATE; /* was XTERM, trying XSTATE */ |
a0d0e21e | 2519 | else { |
3280af22 NIS |
2520 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2521 | PL_expect = XSTATE; | |
a0d0e21e | 2522 | } |
8990e307 | 2523 | } |
a0d0e21e | 2524 | break; |
463ee0b2 | 2525 | } |
3280af22 | 2526 | yylval.ival = PL_curcop->cop_line; |
79072805 | 2527 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2528 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2529 | TOKEN('{'); |
378cc40b | 2530 | case '}': |
79072805 LW |
2531 | rightbracket: |
2532 | s++; | |
3280af22 | 2533 | if (PL_lex_brackets <= 0) |
d98d5fff | 2534 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 2535 | else |
3280af22 NIS |
2536 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2537 | if (PL_lex_brackets < PL_lex_formbrack) | |
2538 | PL_lex_formbrack = 0; | |
2539 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2540 | if (PL_lex_brackets == 0) { | |
2541 | if (PL_lex_fakebrack) { | |
2542 | PL_lex_state = LEX_INTERPEND; | |
2543 | PL_bufptr = s; | |
e4bfbdd4 | 2544 | return yylex(PERL_YYLEX_PARAM); /* ignore fake brackets */ |
79072805 | 2545 | } |
fa83b5b6 | 2546 | if (*s == '-' && s[1] == '>') |
3280af22 | 2547 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2548 | else if (*s != '[' && *s != '{') |
3280af22 | 2549 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2550 | } |
2551 | } | |
3280af22 NIS |
2552 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2553 | PL_bufptr = s; | |
2554 | PL_lex_fakebrack = 0; | |
e4bfbdd4 | 2555 | return yylex(PERL_YYLEX_PARAM); /* ignore fake brackets */ |
748a9306 | 2556 | } |
79072805 LW |
2557 | force_next('}'); |
2558 | TOKEN(';'); | |
378cc40b LW |
2559 | case '&': |
2560 | s++; | |
2561 | tmp = *s++; | |
2562 | if (tmp == '&') | |
a0d0e21e | 2563 | AOPERATOR(ANDAND); |
378cc40b | 2564 | s--; |
3280af22 | 2565 | if (PL_expect == XOPERATOR) { |
834a4ddd | 2566 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
3280af22 | 2567 | PL_curcop->cop_line--; |
22c35a8c | 2568 | warner(WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 2569 | PL_curcop->cop_line++; |
463ee0b2 | 2570 | } |
79072805 | 2571 | BAop(OP_BIT_AND); |
463ee0b2 | 2572 | } |
79072805 | 2573 | |
3280af22 NIS |
2574 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
2575 | if (*PL_tokenbuf) { | |
2576 | PL_expect = XOPERATOR; | |
2577 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 2578 | } |
79072805 LW |
2579 | else |
2580 | PREREF('&'); | |
c07a80fd | 2581 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2582 | TERM('&'); |
2583 | ||
378cc40b LW |
2584 | case '|': |
2585 | s++; | |
2586 | tmp = *s++; | |
2587 | if (tmp == '|') | |
a0d0e21e | 2588 | AOPERATOR(OROR); |
378cc40b | 2589 | s--; |
79072805 | 2590 | BOop(OP_BIT_OR); |
378cc40b LW |
2591 | case '=': |
2592 | s++; | |
2593 | tmp = *s++; | |
2594 | if (tmp == '=') | |
79072805 LW |
2595 | Eop(OP_EQ); |
2596 | if (tmp == '>') | |
2597 | OPERATOR(','); | |
378cc40b | 2598 | if (tmp == '~') |
79072805 | 2599 | PMop(OP_MATCH); |
599cee73 PM |
2600 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
2601 | warner(WARN_SYNTAX, "Reversed %c= operator",(int)tmp); | |
378cc40b | 2602 | s--; |
3280af22 NIS |
2603 | if (PL_expect == XSTATE && isALPHA(tmp) && |
2604 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 2605 | { |
3280af22 NIS |
2606 | if (PL_in_eval && !PL_rsfp) { |
2607 | d = PL_bufend; | |
a5f75d66 AD |
2608 | while (s < d) { |
2609 | if (*s++ == '\n') { | |
2610 | incline(s); | |
2611 | if (strnEQ(s,"=cut",4)) { | |
2612 | s = strchr(s,'\n'); | |
2613 | if (s) | |
2614 | s++; | |
2615 | else | |
2616 | s = d; | |
2617 | incline(s); | |
2618 | goto retry; | |
2619 | } | |
2620 | } | |
2621 | } | |
2622 | goto retry; | |
2623 | } | |
3280af22 NIS |
2624 | s = PL_bufend; |
2625 | PL_doextract = TRUE; | |
a0d0e21e LW |
2626 | goto retry; |
2627 | } | |
3280af22 | 2628 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 2629 | char *t; |
51882d45 | 2630 | #ifdef PERL_STRICT_CR |
a0d0e21e | 2631 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
2632 | #else |
2633 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
2634 | #endif | |
a0d0e21e LW |
2635 | if (*t == '\n' || *t == '#') { |
2636 | s--; | |
3280af22 | 2637 | PL_expect = XBLOCK; |
a0d0e21e LW |
2638 | goto leftbracket; |
2639 | } | |
79072805 | 2640 | } |
a0d0e21e LW |
2641 | yylval.ival = 0; |
2642 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2643 | case '!': |
2644 | s++; | |
2645 | tmp = *s++; | |
2646 | if (tmp == '=') | |
79072805 | 2647 | Eop(OP_NE); |
378cc40b | 2648 | if (tmp == '~') |
79072805 | 2649 | PMop(OP_NOT); |
378cc40b LW |
2650 | s--; |
2651 | OPERATOR('!'); | |
2652 | case '<': | |
3280af22 | 2653 | if (PL_expect != XOPERATOR) { |
93a17b20 | 2654 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2655 | check_uni(); |
79072805 LW |
2656 | if (s[1] == '<') |
2657 | s = scan_heredoc(s); | |
2658 | else | |
2659 | s = scan_inputsymbol(s); | |
2660 | TERM(sublex_start()); | |
378cc40b LW |
2661 | } |
2662 | s++; | |
2663 | tmp = *s++; | |
2664 | if (tmp == '<') | |
79072805 | 2665 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2666 | if (tmp == '=') { |
2667 | tmp = *s++; | |
2668 | if (tmp == '>') | |
79072805 | 2669 | Eop(OP_NCMP); |
395c3793 | 2670 | s--; |
79072805 | 2671 | Rop(OP_LE); |
395c3793 | 2672 | } |
378cc40b | 2673 | s--; |
79072805 | 2674 | Rop(OP_LT); |
378cc40b LW |
2675 | case '>': |
2676 | s++; | |
2677 | tmp = *s++; | |
2678 | if (tmp == '>') | |
79072805 | 2679 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2680 | if (tmp == '=') |
79072805 | 2681 | Rop(OP_GE); |
378cc40b | 2682 | s--; |
79072805 | 2683 | Rop(OP_GT); |
378cc40b LW |
2684 | |
2685 | case '$': | |
bbce6d69 | 2686 | CLINE; |
2687 | ||
3280af22 NIS |
2688 | if (PL_expect == XOPERATOR) { |
2689 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2690 | PL_expect = XTERM; | |
a0d0e21e | 2691 | depcom(); |
bbce6d69 | 2692 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2693 | } |
8990e307 | 2694 | } |
a0d0e21e | 2695 | |
834a4ddd | 2696 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 NIS |
2697 | if (PL_expect == XOPERATOR) |
2698 | no_op("Array length", PL_bufptr); | |
2699 | PL_tokenbuf[0] = '@'; | |
2700 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2701 | FALSE); |
3280af22 | 2702 | if (!PL_tokenbuf[1]) |
a0d0e21e | 2703 | PREREF(DOLSHARP); |
3280af22 NIS |
2704 | PL_expect = XOPERATOR; |
2705 | PL_pending_ident = '#'; | |
463ee0b2 | 2706 | TOKEN(DOLSHARP); |
79072805 | 2707 | } |
bbce6d69 | 2708 | |
3280af22 NIS |
2709 | if (PL_expect == XOPERATOR) |
2710 | no_op("Scalar", PL_bufptr); | |
2711 | PL_tokenbuf[0] = '$'; | |
2712 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2713 | if (!PL_tokenbuf[1]) { | |
2714 | if (s == PL_bufend) | |
bbce6d69 | 2715 | yyerror("Final $ should be \\$ or $name"); |
2716 | PREREF('$'); | |
8990e307 | 2717 | } |
a0d0e21e | 2718 | |
bbce6d69 | 2719 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 2720 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 2721 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 2722 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 2723 | yylval.opval->op_private = OPpCONST_ARYBASE; |
2724 | TERM(THING); | |
2725 | } | |
2726 | ||
ff68c719 | 2727 | d = s; |
69d2bceb | 2728 | tmp = (I32)*s; |
3280af22 | 2729 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2730 | s = skipspace(s); |
2731 | ||
3280af22 | 2732 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2733 | char *t; |
2734 | if (*s == '[') { | |
3280af22 | 2735 | PL_tokenbuf[0] = '@'; |
599cee73 | 2736 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 2737 | for(t = s + 1; |
834a4ddd | 2738 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 2739 | t++) ; |
a0d0e21e | 2740 | if (*t++ == ',') { |
3280af22 NIS |
2741 | PL_bufptr = skipspace(PL_bufptr); |
2742 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 2743 | t++; |
599cee73 PM |
2744 | warner(WARN_SYNTAX, |
2745 | "Multidimensional syntax %.*s not supported", | |
2746 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
2747 | } |
2748 | } | |
bbce6d69 | 2749 | } |
2750 | else if (*s == '{') { | |
3280af22 | 2751 | PL_tokenbuf[0] = '%'; |
599cee73 | 2752 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 2753 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
2754 | { | |
3280af22 | 2755 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2756 | STRLEN len; |
2757 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 2758 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 2759 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 GS |
2760 | for (; isSPACE(*t); t++) ; |
2761 | if (*t == ';' && perl_get_cv(tmpbuf, FALSE)) | |
599cee73 PM |
2762 | warner(WARN_SYNTAX, |
2763 | "You need to quote \"%s\"", tmpbuf); | |
748a9306 | 2764 | } |
93a17b20 LW |
2765 | } |
2766 | } | |
2f3197b3 | 2767 | } |
bbce6d69 | 2768 | |
3280af22 | 2769 | PL_expect = XOPERATOR; |
69d2bceb | 2770 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
2771 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
2772 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
2773 | PL_expect = XOPERATOR; | |
bbce6d69 | 2774 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 2775 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 2776 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 2777 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 2778 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 2779 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 2780 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
2781 | if (tmp = keyword(tmpbuf, len)) { |
2782 | /* binary operators exclude handle interpretations */ | |
2783 | switch (tmp) { | |
2784 | case -KEY_x: | |
2785 | case -KEY_eq: | |
2786 | case -KEY_ne: | |
2787 | case -KEY_gt: | |
2788 | case -KEY_lt: | |
2789 | case -KEY_ge: | |
2790 | case -KEY_le: | |
2791 | case -KEY_cmp: | |
2792 | break; | |
2793 | default: | |
3280af22 | 2794 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
2795 | break; |
2796 | } | |
2797 | } | |
68dc0745 | 2798 | else { |
2799 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2800 | if (gv && GvCVu(gv)) | |
3280af22 | 2801 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 2802 | } |
93a17b20 | 2803 | } |
bbce6d69 | 2804 | else if (isDIGIT(*s)) |
3280af22 | 2805 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 2806 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 2807 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 2808 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 2809 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 2810 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 2811 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 2812 | } |
3280af22 | 2813 | PL_pending_ident = '$'; |
79072805 | 2814 | TOKEN('$'); |
378cc40b LW |
2815 | |
2816 | case '@': | |
3280af22 | 2817 | if (PL_expect == XOPERATOR) |
bbce6d69 | 2818 | no_op("Array", s); |
3280af22 NIS |
2819 | PL_tokenbuf[0] = '@'; |
2820 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2821 | if (!PL_tokenbuf[1]) { | |
2822 | if (s == PL_bufend) | |
bbce6d69 | 2823 | yyerror("Final @ should be \\@ or @name"); |
2824 | PREREF('@'); | |
2825 | } | |
3280af22 | 2826 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2827 | s = skipspace(s); |
3280af22 | 2828 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2829 | if (*s == '{') |
3280af22 | 2830 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
2831 | |
2832 | /* Warn about @ where they meant $. */ | |
599cee73 | 2833 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
2834 | if (*s == '[' || *s == '{') { |
2835 | char *t = s + 1; | |
834a4ddd | 2836 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
2837 | t++; |
2838 | if (*t == '}' || *t == ']') { | |
2839 | t++; | |
3280af22 | 2840 | PL_bufptr = skipspace(PL_bufptr); |
599cee73 PM |
2841 | warner(WARN_SYNTAX, |
2842 | "Scalar value %.*s better written as $%.*s", | |
3280af22 | 2843 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 2844 | } |
93a17b20 LW |
2845 | } |
2846 | } | |
463ee0b2 | 2847 | } |
3280af22 | 2848 | PL_pending_ident = '@'; |
79072805 | 2849 | TERM('@'); |
378cc40b LW |
2850 | |
2851 | case '/': /* may either be division or pattern */ | |
2852 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 2853 | if (PL_expect != XOPERATOR) { |
c277df42 | 2854 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
2855 | if (PL_oldoldbufptr == PL_last_uni |
2856 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 2857 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 2858 | check_uni(); |
8782bef2 | 2859 | s = scan_pat(s,OP_MATCH); |
79072805 | 2860 | TERM(sublex_start()); |
378cc40b LW |
2861 | } |
2862 | tmp = *s++; | |
a687059c | 2863 | if (tmp == '/') |
79072805 | 2864 | Mop(OP_DIVIDE); |
378cc40b LW |
2865 | OPERATOR(tmp); |
2866 | ||
2867 | case '.': | |
51882d45 GS |
2868 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
2869 | #ifdef PERL_STRICT_CR | |
2870 | && s[1] == '\n' | |
2871 | #else | |
2872 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
2873 | #endif | |
2874 | && (s == PL_linestart || s[-1] == '\n') ) | |
2875 | { | |
3280af22 NIS |
2876 | PL_lex_formbrack = 0; |
2877 | PL_expect = XSTATE; | |
79072805 LW |
2878 | goto rightbracket; |
2879 | } | |
3280af22 | 2880 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 2881 | tmp = *s++; |
a687059c LW |
2882 | if (*s == tmp) { |
2883 | s++; | |
2f3197b3 LW |
2884 | if (*s == tmp) { |
2885 | s++; | |
79072805 | 2886 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2887 | } |
2888 | else | |
79072805 | 2889 | yylval.ival = 0; |
378cc40b | 2890 | OPERATOR(DOTDOT); |
a687059c | 2891 | } |
3280af22 | 2892 | if (PL_expect != XOPERATOR) |
2f3197b3 | 2893 | check_uni(); |
79072805 | 2894 | Aop(OP_CONCAT); |
378cc40b LW |
2895 | } |
2896 | /* FALL THROUGH */ | |
2897 | case '0': case '1': case '2': case '3': case '4': | |
2898 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2899 | s = scan_num(s); |
3280af22 | 2900 | if (PL_expect == XOPERATOR) |
8990e307 | 2901 | no_op("Number",s); |
79072805 LW |
2902 | TERM(THING); |
2903 | ||
2904 | case '\'': | |
8990e307 | 2905 | s = scan_str(s); |
3280af22 NIS |
2906 | if (PL_expect == XOPERATOR) { |
2907 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2908 | PL_expect = XTERM; | |
a0d0e21e LW |
2909 | depcom(); |
2910 | return ','; /* grandfather non-comma-format format */ | |
2911 | } | |
463ee0b2 | 2912 | else |
8990e307 | 2913 | no_op("String",s); |
463ee0b2 | 2914 | } |
79072805 | 2915 | if (!s) |
85e6fe83 | 2916 | missingterm((char*)0); |
79072805 LW |
2917 | yylval.ival = OP_CONST; |
2918 | TERM(sublex_start()); | |
2919 | ||
2920 | case '"': | |
8990e307 | 2921 | s = scan_str(s); |
3280af22 NIS |
2922 | if (PL_expect == XOPERATOR) { |
2923 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2924 | PL_expect = XTERM; | |
a0d0e21e LW |
2925 | depcom(); |
2926 | return ','; /* grandfather non-comma-format format */ | |
2927 | } | |
463ee0b2 | 2928 | else |
8990e307 | 2929 | no_op("String",s); |
463ee0b2 | 2930 | } |
79072805 | 2931 | if (!s) |
85e6fe83 | 2932 | missingterm((char*)0); |
4633a7c4 | 2933 | yylval.ival = OP_CONST; |
3280af22 | 2934 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 2935 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
2936 | yylval.ival = OP_STRINGIFY; |
2937 | break; | |
2938 | } | |
2939 | } | |
79072805 LW |
2940 | TERM(sublex_start()); |
2941 | ||
2942 | case '`': | |
2943 | s = scan_str(s); | |
3280af22 | 2944 | if (PL_expect == XOPERATOR) |
8990e307 | 2945 | no_op("Backticks",s); |
79072805 | 2946 | if (!s) |
85e6fe83 | 2947 | missingterm((char*)0); |
79072805 LW |
2948 | yylval.ival = OP_BACKTICK; |
2949 | set_csh(); | |
2950 | TERM(sublex_start()); | |
2951 | ||
2952 | case '\\': | |
2953 | s++; | |
599cee73 PM |
2954 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
2955 | warner(WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", | |
2956 | *s, *s); | |
3280af22 | 2957 | if (PL_expect == XOPERATOR) |
8990e307 | 2958 | no_op("Backslash",s); |
79072805 LW |
2959 | OPERATOR(REFGEN); |
2960 | ||
2961 | case 'x': | |
3280af22 | 2962 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
2963 | s++; |
2964 | Mop(OP_REPEAT); | |
2f3197b3 | 2965 | } |
79072805 LW |
2966 | goto keylookup; |
2967 | ||
378cc40b | 2968 | case '_': |
79072805 LW |
2969 | case 'a': case 'A': |
2970 | case 'b': case 'B': | |
2971 | case 'c': case 'C': | |
2972 | case 'd': case 'D': | |
2973 | case 'e': case 'E': | |
2974 | case 'f': case 'F': | |
2975 | case 'g': case 'G': | |
2976 | case 'h': case 'H': | |
2977 | case 'i': case 'I': | |
2978 | case 'j': case 'J': | |
2979 | case 'k': case 'K': | |
2980 | case 'l': case 'L': | |
2981 | case 'm': case 'M': | |
2982 | case 'n': case 'N': | |
2983 | case 'o': case 'O': | |
2984 | case 'p': case 'P': | |
2985 | case 'q': case 'Q': | |
2986 | case 'r': case 'R': | |
2987 | case 's': case 'S': | |
2988 | case 't': case 'T': | |
2989 | case 'u': case 'U': | |
2990 | case 'v': case 'V': | |
2991 | case 'w': case 'W': | |
2992 | case 'X': | |
2993 | case 'y': case 'Y': | |
2994 | case 'z': case 'Z': | |
2995 | ||
49dc05e3 | 2996 | keylookup: { |
2d8e6c8d | 2997 | STRLEN n_a; |
161b471a NIS |
2998 | gv = Nullgv; |
2999 | gvp = 0; | |
49dc05e3 | 3000 | |
3280af22 NIS |
3001 | PL_bufptr = s; |
3002 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3003 | |
3004 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3005 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3006 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3007 | (PL_tokenbuf[0] == 'q' && | |
3008 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3009 | |
3010 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3011 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3012 | goto just_a_word; |
3013 | ||
3643fb5f | 3014 | d = s; |
3280af22 | 3015 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3016 | d++; /* no comments skipped here, or s### is misparsed */ |
3017 | ||
3018 | /* Is this a label? */ | |
3280af22 NIS |
3019 | if (!tmp && PL_expect == XSTATE |
3020 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3021 | s = d + 1; |
3280af22 | 3022 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3023 | CLINE; |
3024 | TOKEN(LABEL); | |
3643fb5f CS |
3025 | } |
3026 | ||
3027 | /* Check for keywords */ | |
3280af22 | 3028 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3029 | |
3030 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3031 | if (strnEQ(d,"=>",2)) { |
3032 | CLINE; | |
3280af22 | 3033 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3034 | yylval.opval->op_private = OPpCONST_BARE; |
3035 | TERM(WORD); | |
3036 | } | |
3037 | ||
a0d0e21e | 3038 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3039 | GV *ogv = Nullgv; /* override (winner) */ |
3040 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3041 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3042 | CV *cv; |
3280af22 | 3043 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3044 | (cv = GvCVu(gv))) |
3045 | { | |
3046 | if (GvIMPORTED_CV(gv)) | |
3047 | ogv = gv; | |
3048 | else if (! CvMETHOD(cv)) | |
3049 | hgv = gv; | |
3050 | } | |
3051 | if (!ogv && | |
3280af22 NIS |
3052 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3053 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3054 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3055 | { | |
3056 | ogv = gv; | |
3057 | } | |
3058 | } | |
3059 | if (ogv) { | |
3060 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3061 | } |
3062 | else if (gv && !gvp | |
3063 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3064 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3065 | { |
3066 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3067 | } |
56f7f34b CS |
3068 | else { /* no override */ |
3069 | tmp = -tmp; | |
3070 | gv = Nullgv; | |
3071 | gvp = 0; | |
4944e2f7 GS |
3072 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3073 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
599cee73 PM |
3074 | warner(WARN_AMBIGUOUS, |
3075 | "Ambiguous call resolved as CORE::%s(), %s", | |
2f3ca594 | 3076 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3077 | } |
a0d0e21e LW |
3078 | } |
3079 | ||
3080 | reserved_word: | |
3081 | switch (tmp) { | |
79072805 LW |
3082 | |
3083 | default: /* not a keyword */ | |
93a17b20 | 3084 | just_a_word: { |
96e4d5b1 | 3085 | SV *sv; |
3280af22 | 3086 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3087 | |
3088 | /* Get the rest if it looks like a package qualifier */ | |
3089 | ||
a0d0e21e | 3090 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3091 | STRLEN morelen; |
3280af22 | 3092 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3093 | TRUE, &morelen); |
3094 | if (!morelen) | |
3280af22 | 3095 | croak("Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3096 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3097 | len += morelen; |
a0d0e21e | 3098 | } |
8990e307 | 3099 | |
3280af22 NIS |
3100 | if (PL_expect == XOPERATOR) { |
3101 | if (PL_bufptr == PL_linestart) { | |
3102 | PL_curcop->cop_line--; | |
22c35a8c | 3103 | warner(WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 3104 | PL_curcop->cop_line++; |
463ee0b2 LW |
3105 | } |
3106 | else | |
54310121 | 3107 | no_op("Bareword",s); |
463ee0b2 | 3108 | } |
8990e307 | 3109 | |
c3e0f903 GS |
3110 | /* Look for a subroutine with this name in current package, |
3111 | unless name is "Foo::", in which case Foo is a bearword | |
3112 | (and a package name). */ | |
3113 | ||
3114 | if (len > 2 && | |
3280af22 | 3115 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3116 | { |
599cee73 PM |
3117 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3118 | warner(WARN_UNSAFE, | |
3119 | "Bareword \"%s\" refers to nonexistent package", | |
3280af22 | 3120 | PL_tokenbuf); |
c3e0f903 | 3121 | len -= 2; |
3280af22 | 3122 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3123 | gv = Nullgv; |
3124 | gvp = 0; | |
3125 | } | |
3126 | else { | |
3127 | len = 0; | |
3128 | if (!gv) | |
3280af22 | 3129 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3130 | } |
3131 | ||
3132 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3133 | |
49dc05e3 | 3134 | if (gvp) { |
79cb57f6 | 3135 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3136 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3137 | } |
3138 | else | |
3280af22 | 3139 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3140 | |
a0d0e21e LW |
3141 | /* Presume this is going to be a bareword of some sort. */ |
3142 | ||
3143 | CLINE; | |
49dc05e3 | 3144 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3145 | yylval.opval->op_private = OPpCONST_BARE; |
3146 | ||
c3e0f903 GS |
3147 | /* And if "Foo::", then that's what it certainly is. */ |
3148 | ||
3149 | if (len) | |
3150 | goto safe_bareword; | |
3151 | ||
8990e307 LW |
3152 | /* See if it's the indirect object for a list operator. */ |
3153 | ||
3280af22 NIS |
3154 | if (PL_oldoldbufptr && |
3155 | PL_oldoldbufptr < PL_bufptr && | |
3156 | (PL_oldoldbufptr == PL_last_lop || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3157 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3158 | (PL_expect == XREF || |
3159 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3160 | { |
748a9306 LW |
3161 | bool immediate_paren = *s == '('; |
3162 | ||
a0d0e21e LW |
3163 | /* (Now we can afford to cross potential line boundary.) */ |
3164 | s = skipspace(s); | |
3165 | ||
3166 | /* Two barewords in a row may indicate method call. */ | |
3167 | ||
834a4ddd | 3168 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3169 | return tmp; |
3170 | ||
3171 | /* If not a declared subroutine, it's an indirect object. */ | |
3172 | /* (But it's an indir obj regardless for sort.) */ | |
3173 | ||
3280af22 | 3174 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3175 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3176 | (PL_last_lop_op != OP_MAPSTART && | |
3177 | PL_last_lop_op != OP_GREPSTART)) | |
3178 | { | |
3280af22 | 3179 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3180 | goto bareword; |
93a17b20 LW |
3181 | } |
3182 | } | |
8990e307 LW |
3183 | |
3184 | /* If followed by a paren, it's certainly a subroutine. */ | |
3185 | ||
3280af22 | 3186 | PL_expect = XOPERATOR; |
8990e307 | 3187 | s = skipspace(s); |
93a17b20 | 3188 | if (*s == '(') { |
79072805 | 3189 | CLINE; |
96e4d5b1 | 3190 | if (gv && GvCVu(gv)) { |
3191 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3192 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3193 | s = d + 1; |
3194 | goto its_constant; | |
3195 | } | |
3196 | } | |
3280af22 NIS |
3197 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3198 | PL_expect = XOPERATOR; | |
93a17b20 | 3199 | force_next(WORD); |
c07a80fd | 3200 | yylval.ival = 0; |
463ee0b2 | 3201 | TOKEN('&'); |
79072805 | 3202 | } |
93a17b20 | 3203 | |
a0d0e21e | 3204 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3205 | |
8ebc5c01 | 3206 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3207 | PL_last_lop = PL_oldbufptr; |
3208 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3209 | PREBLOCK(METHOD); |
463ee0b2 LW |
3210 | } |
3211 | ||
8990e307 LW |
3212 | /* If followed by a bareword, see if it looks like indir obj. */ |
3213 | ||
834a4ddd | 3214 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3215 | return tmp; |
93a17b20 | 3216 | |
8990e307 LW |
3217 | /* Not a method, so call it a subroutine (if defined) */ |
3218 | ||
8ebc5c01 | 3219 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3220 | CV* cv; |
748a9306 | 3221 | if (lastchar == '-') |
c2960299 | 3222 | warn("Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 3223 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3224 | /* Check for a constant sub */ |
46fc3d4c | 3225 | cv = GvCV(gv); |
96e4d5b1 | 3226 | if ((sv = cv_const_sv(cv))) { |
3227 | its_constant: | |
3228 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3229 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3230 | yylval.opval->op_private = 0; | |
3231 | TOKEN(WORD); | |
89bfa8cd | 3232 | } |
3233 | ||
a5f75d66 AD |
3234 | /* Resolve to GV now. */ |
3235 | op_free(yylval.opval); | |
3236 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3237 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3238 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3239 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3240 | /* Is there a prototype? */ |
3241 | if (SvPOK(cv)) { | |
3242 | STRLEN len; | |
7a52d87a | 3243 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3244 | if (!len) |
3245 | TERM(FUNC0SUB); | |
7a52d87a | 3246 | if (strEQ(proto, "$")) |
4633a7c4 | 3247 | OPERATOR(UNIOPSUB); |
7a52d87a | 3248 | if (*proto == '&' && *s == '{') { |
3280af22 | 3249 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3250 | PREBLOCK(LSTOPSUB); |
3251 | } | |
a9ef352a | 3252 | } |
3280af22 NIS |
3253 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3254 | PL_expect = XTERM; | |
8990e307 LW |
3255 | force_next(WORD); |
3256 | TOKEN(NOAMP); | |
3257 | } | |
748a9306 | 3258 | |
8990e307 LW |
3259 | /* Call it a bare word */ |
3260 | ||
5603f27d GS |
3261 | if (PL_hints & HINT_STRICT_SUBS) |
3262 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3263 | else { | |
3264 | bareword: | |
3265 | if (ckWARN(WARN_RESERVED)) { | |
3266 | if (lastchar != '-') { | |
3267 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3268 | if (!*d) | |
3269 | warner(WARN_RESERVED, PL_warn_reserved, | |
3270 | PL_tokenbuf); | |
3271 | } | |
748a9306 LW |
3272 | } |
3273 | } | |
c3e0f903 GS |
3274 | |
3275 | safe_bareword: | |
748a9306 LW |
3276 | if (lastchar && strchr("*%&", lastchar)) { |
3277 | warn("Operator or semicolon missing before %c%s", | |
3280af22 | 3278 | lastchar, PL_tokenbuf); |
c2960299 | 3279 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3280 | lastchar, lastchar); |
3281 | } | |
93a17b20 | 3282 | TOKEN(WORD); |
79072805 | 3283 | } |
79072805 | 3284 | |
68dc0745 | 3285 | case KEY___FILE__: |
46fc3d4c | 3286 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3287 | newSVsv(GvSV(PL_curcop->cop_filegv))); |
46fc3d4c | 3288 | TERM(THING); |
3289 | ||
79072805 | 3290 | case KEY___LINE__: |
46fc3d4c | 3291 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3292 | newSVpvf("%ld", (long)PL_curcop->cop_line)); |
79072805 | 3293 | TERM(THING); |
68dc0745 | 3294 | |
3295 | case KEY___PACKAGE__: | |
3296 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3297 | (PL_curstash |
3298 | ? newSVsv(PL_curstname) | |
3299 | : &PL_sv_undef)); | |
79072805 | 3300 | TERM(THING); |
79072805 | 3301 | |
e50aee73 | 3302 | case KEY___DATA__: |
79072805 LW |
3303 | case KEY___END__: { |
3304 | GV *gv; | |
79072805 LW |
3305 | |
3306 | /*SUPPRESS 560*/ | |
3280af22 | 3307 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3308 | char *pname = "main"; |
3280af22 NIS |
3309 | if (PL_tokenbuf[2] == 'D') |
3310 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
46fc3d4c | 3311 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3312 | GvMULTI_on(gv); |
79072805 | 3313 | if (!GvIO(gv)) |
a0d0e21e | 3314 | GvIOp(gv) = newIO(); |
3280af22 | 3315 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3316 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3317 | { | |
3280af22 | 3318 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3319 | fcntl(fd,F_SETFD,fd >= 3); |
3320 | } | |
79072805 | 3321 | #endif |
fd049845 | 3322 | /* Mark this internal pseudo-handle as clean */ |
3323 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3324 | if (PL_preprocess) |
a0d0e21e | 3325 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3326 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3327 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3328 | else |
a0d0e21e | 3329 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3330 | PL_rsfp = Nullfp; |
79072805 LW |
3331 | } |
3332 | goto fake_eof; | |
e929a76b | 3333 | } |
de3bb511 | 3334 | |
8990e307 | 3335 | case KEY_AUTOLOAD: |
ed6116ce | 3336 | case KEY_DESTROY: |
79072805 LW |
3337 | case KEY_BEGIN: |
3338 | case KEY_END: | |
7d07dbc2 | 3339 | case KEY_INIT: |
3280af22 NIS |
3340 | if (PL_expect == XSTATE) { |
3341 | s = PL_bufptr; | |
93a17b20 | 3342 | goto really_sub; |
79072805 LW |
3343 | } |
3344 | goto just_a_word; | |
3345 | ||
a0d0e21e LW |
3346 | case KEY_CORE: |
3347 | if (*s == ':' && s[1] == ':') { | |
3348 | s += 2; | |
748a9306 | 3349 | d = s; |
3280af22 NIS |
3350 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3351 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3352 | if (tmp < 0) |
3353 | tmp = -tmp; | |
3354 | goto reserved_word; | |
3355 | } | |
3356 | goto just_a_word; | |
3357 | ||
463ee0b2 LW |
3358 | case KEY_abs: |
3359 | UNI(OP_ABS); | |
3360 | ||
79072805 LW |
3361 | case KEY_alarm: |
3362 | UNI(OP_ALARM); | |
3363 | ||
3364 | case KEY_accept: | |
a0d0e21e | 3365 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3366 | |
463ee0b2 LW |
3367 | case KEY_and: |
3368 | OPERATOR(ANDOP); | |
3369 | ||
79072805 | 3370 | case KEY_atan2: |
a0d0e21e | 3371 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3372 | |
79072805 | 3373 | case KEY_bind: |
a0d0e21e | 3374 | LOP(OP_BIND,XTERM); |
79072805 LW |
3375 | |
3376 | case KEY_binmode: | |
3377 | UNI(OP_BINMODE); | |
3378 | ||
3379 | case KEY_bless: | |
a0d0e21e | 3380 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3381 | |
3382 | case KEY_chop: | |
3383 | UNI(OP_CHOP); | |
3384 | ||
3385 | case KEY_continue: | |
3386 | PREBLOCK(CONTINUE); | |
3387 | ||
3388 | case KEY_chdir: | |
85e6fe83 | 3389 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3390 | UNI(OP_CHDIR); |
3391 | ||
3392 | case KEY_close: | |
3393 | UNI(OP_CLOSE); | |
3394 | ||
3395 | case KEY_closedir: | |
3396 | UNI(OP_CLOSEDIR); | |
3397 | ||
3398 | case KEY_cmp: | |
3399 | Eop(OP_SCMP); | |
3400 | ||
3401 | case KEY_caller: | |
3402 | UNI(OP_CALLER); | |
3403 | ||
3404 | case KEY_crypt: | |
3405 | #ifdef FCRYPT | |
6b88bc9c | 3406 | if (!PL_cryptseen++) |
de3bb511 | 3407 | init_des(); |
a687059c | 3408 | #endif |
a0d0e21e | 3409 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3410 | |
3411 | case KEY_chmod: | |
599cee73 | 3412 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3413 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
3414 | if (*d != '0' && isDIGIT(*d)) |
3415 | yywarn("chmod: mode argument is missing initial 0"); | |
3416 | } | |
a0d0e21e | 3417 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3418 | |
3419 | case KEY_chown: | |
a0d0e21e | 3420 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3421 | |
3422 | case KEY_connect: | |
a0d0e21e | 3423 | LOP(OP_CONNECT,XTERM); |
79072805 | 3424 | |
463ee0b2 LW |
3425 | case KEY_chr: |
3426 | UNI(OP_CHR); | |
3427 | ||
79072805 LW |
3428 | case KEY_cos: |
3429 | UNI(OP_COS); | |
3430 | ||
3431 | case KEY_chroot: | |
3432 | UNI(OP_CHROOT); | |
3433 | ||
3434 | case KEY_do: | |
3435 | s = skipspace(s); | |
3436 | if (*s == '{') | |
a0d0e21e | 3437 | PRETERMBLOCK(DO); |
79072805 | 3438 | if (*s != '\'') |
a0d0e21e | 3439 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3440 | OPERATOR(DO); |
79072805 LW |
3441 | |
3442 | case KEY_die: | |
3280af22 | 3443 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3444 | LOP(OP_DIE,XTERM); |
79072805 LW |
3445 | |
3446 | case KEY_defined: | |
3447 | UNI(OP_DEFINED); | |
3448 | ||
3449 | case KEY_delete: | |
a0d0e21e | 3450 | UNI(OP_DELETE); |
79072805 LW |
3451 | |
3452 | case KEY_dbmopen: | |
a0d0e21e LW |
3453 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3454 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3455 | |
3456 | case KEY_dbmclose: | |
3457 | UNI(OP_DBMCLOSE); | |
3458 | ||
3459 | case KEY_dump: | |
a0d0e21e | 3460 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3461 | LOOPX(OP_DUMP); |
3462 | ||
3463 | case KEY_else: | |
3464 | PREBLOCK(ELSE); | |
3465 | ||
3466 | case KEY_elsif: | |
3280af22 | 3467 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3468 | OPERATOR(ELSIF); |
3469 | ||
3470 | case KEY_eq: | |
3471 | Eop(OP_SEQ); | |
3472 | ||
a0d0e21e LW |
3473 | case KEY_exists: |
3474 | UNI(OP_EXISTS); | |
3475 | ||
79072805 LW |
3476 | case KEY_exit: |
3477 | UNI(OP_EXIT); | |
3478 | ||
3479 | case KEY_eval: | |
79072805 | 3480 | s = skipspace(s); |
3280af22 | 3481 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3482 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3483 | |
3484 | case KEY_eof: | |
3485 | UNI(OP_EOF); | |
3486 | ||
3487 | case KEY_exp: | |
3488 | UNI(OP_EXP); | |
3489 | ||
3490 | case KEY_each: | |
3491 | UNI(OP_EACH); | |
3492 | ||
3493 | case KEY_exec: | |
3494 | set_csh(); | |
a0d0e21e | 3495 | LOP(OP_EXEC,XREF); |
79072805 LW |
3496 | |
3497 | case KEY_endhostent: | |
3498 | FUN0(OP_EHOSTENT); | |
3499 | ||
3500 | case KEY_endnetent: | |
3501 | FUN0(OP_ENETENT); | |
3502 | ||
3503 | case KEY_endservent: | |
3504 | FUN0(OP_ESERVENT); | |
3505 | ||
3506 | case KEY_endprotoent: | |
3507 | FUN0(OP_EPROTOENT); | |
3508 | ||
3509 | case KEY_endpwent: | |
3510 | FUN0(OP_EPWENT); | |
3511 | ||
3512 | case KEY_endgrent: | |
3513 | FUN0(OP_EGRENT); | |
3514 | ||
3515 | case KEY_for: | |
3516 | case KEY_foreach: | |
3280af22 | 3517 | yylval.ival = PL_curcop->cop_line; |
55497cff | 3518 | s = skipspace(s); |
834a4ddd | 3519 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 3520 | char *p = s; |
3280af22 | 3521 | if ((PL_bufend - p) >= 3 && |
55497cff | 3522 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3523 | p += 2; | |
3524 | p = skipspace(p); | |
834a4ddd | 3525 | if (isIDFIRST_lazy(p)) |
55497cff | 3526 | croak("Missing $ on loop variable"); |
3527 | } | |
79072805 LW |
3528 | OPERATOR(FOR); |
3529 | ||
3530 | case KEY_formline: | |
a0d0e21e | 3531 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3532 | |
3533 | case KEY_fork: | |
3534 | FUN0(OP_FORK); | |
3535 | ||
3536 | case KEY_fcntl: | |
a0d0e21e | 3537 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3538 | |
3539 | case KEY_fileno: | |
3540 | UNI(OP_FILENO); | |
3541 | ||
3542 | case KEY_flock: | |
a0d0e21e | 3543 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3544 | |
3545 | case KEY_gt: | |
3546 | Rop(OP_SGT); | |
3547 | ||
3548 | case KEY_ge: | |
3549 | Rop(OP_SGE); | |
3550 | ||
3551 | case KEY_grep: | |
a0d0e21e | 3552 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3553 | |
3554 | case KEY_goto: | |
a0d0e21e | 3555 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3556 | LOOPX(OP_GOTO); |
3557 | ||
3558 | case KEY_gmtime: | |
3559 | UNI(OP_GMTIME); | |
3560 | ||
3561 | case KEY_getc: | |
3562 | UNI(OP_GETC); | |
3563 | ||
3564 | case KEY_getppid: | |
3565 | FUN0(OP_GETPPID); | |
3566 | ||
3567 | case KEY_getpgrp: | |
3568 | UNI(OP_GETPGRP); | |
3569 | ||
3570 | case KEY_getpriority: | |
a0d0e21e | 3571 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3572 | |
3573 | case KEY_getprotobyname: | |
3574 | UNI(OP_GPBYNAME); | |
3575 | ||
3576 | case KEY_getprotobynumber: | |
a0d0e21e | 3577 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3578 | |
3579 | case KEY_getprotoent: | |
3580 | FUN0(OP_GPROTOENT); | |
3581 | ||
3582 | case KEY_getpwent: | |
3583 | FUN0(OP_GPWENT); | |
3584 | ||
3585 | case KEY_getpwnam: | |
ff68c719 | 3586 | UNI(OP_GPWNAM); |
79072805 LW |
3587 | |
3588 | case KEY_getpwuid: | |
ff68c719 | 3589 | UNI(OP_GPWUID); |
79072805 LW |
3590 | |
3591 | case KEY_getpeername: | |
3592 | UNI(OP_GETPEERNAME); | |
3593 | ||