Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
9607fc9c | 3 | * Copyright (c) 1991-1997, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
14 | #include "EXTERN.h" | |
15 | #include "perl.h" | |
378cc40b | 16 | |
d3b6f988 GS |
17 | #define yychar PL_yychar |
18 | #define yylval PL_yylval | |
19 | ||
76e3520e | 20 | #ifndef PERL_OBJECT |
a0d0e21e LW |
21 | static void check_uni _((void)); |
22 | static void force_next _((I32 type)); | |
89bfa8cd | 23 | static char *force_version _((char *start)); |
a0d0e21e | 24 | static char *force_word _((char *start, int token, int check_keyword, int allow_pack, int allow_tick)); |
76e3520e | 25 | static SV *tokeq _((SV *sv)); |
a0d0e21e LW |
26 | static char *scan_const _((char *start)); |
27 | static char *scan_formline _((char *s)); | |
28 | static char *scan_heredoc _((char *s)); | |
8903cb82 | 29 | static char *scan_ident _((char *s, char *send, char *dest, STRLEN destlen, |
30 | I32 ck_uni)); | |
a0d0e21e | 31 | static char *scan_inputsymbol _((char *start)); |
8782bef2 | 32 | static char *scan_pat _((char *start, I32 type)); |
a0d0e21e LW |
33 | static char *scan_str _((char *start)); |
34 | static char *scan_subst _((char *start)); | |
35 | static char *scan_trans _((char *start)); | |
8903cb82 | 36 | static char *scan_word _((char *s, char *dest, STRLEN destlen, |
37 | int allow_package, STRLEN *slp)); | |
a0d0e21e LW |
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)); | |
55497cff | 49 | static I32 sublex_push _((void)); |
a0d0e21e LW |
50 | static I32 sublex_start _((void)); |
51 | #ifdef CRIPPLED_CC | |
52 | static int uni _((I32 f, char *s)); | |
53 | #endif | |
fd049845 | 54 | static char * filter_gets _((SV *sv, PerlIO *fp, STRLEN append)); |
6d5fb7e3 | 55 | static void restore_rsfp _((void *f)); |
b3ac6de7 | 56 | static SV *new_constant _((char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type)); |
49d8d3a1 MB |
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 | |
79072805 LW |
77 | /* The following are arranged oddly so that the guard on the switch statement |
78 | * can get by with a single comparison (if the compiler is smart enough). | |
79 | */ | |
80 | ||
fb73857a | 81 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
82 | ||
55497cff | 83 | #define LEX_NORMAL 10 |
84 | #define LEX_INTERPNORMAL 9 | |
85 | #define LEX_INTERPCASEMOD 8 | |
86 | #define LEX_INTERPPUSH 7 | |
87 | #define LEX_INTERPSTART 6 | |
88 | #define LEX_INTERPEND 5 | |
89 | #define LEX_INTERPENDMAYBE 4 | |
90 | #define LEX_INTERPCONCAT 3 | |
91 | #define LEX_INTERPCONST 2 | |
92 | #define LEX_FORMLINE 1 | |
93 | #define LEX_KNOWNEXT 0 | |
79072805 | 94 | |
395c3793 LW |
95 | #ifdef I_FCNTL |
96 | #include <fcntl.h> | |
97 | #endif | |
fe14fcc3 LW |
98 | #ifdef I_SYS_FILE |
99 | #include <sys/file.h> | |
100 | #endif | |
395c3793 | 101 | |
a790bc05 | 102 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
103 | #ifdef I_UNISTD | |
104 | # include <unistd.h> /* Needed for execv() */ | |
105 | #endif | |
106 | ||
107 | ||
79072805 LW |
108 | #ifdef ff_next |
109 | #undef ff_next | |
d48672a2 LW |
110 | #endif |
111 | ||
a1a0e61e TD |
112 | #ifdef USE_PURE_BISON |
113 | YYSTYPE* yylval_pointer = NULL; | |
114 | int* yychar_pointer = NULL; | |
22c35a8c GS |
115 | # undef yylval |
116 | # undef yychar | |
e4bfbdd4 JH |
117 | # define yylval (*yylval_pointer) |
118 | # define yychar (*yychar_pointer) | |
119 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
a1a0e61e | 120 | #else |
e4bfbdd4 | 121 | # define PERL_YYLEX_PARAM |
a1a0e61e TD |
122 | #endif |
123 | ||
79072805 | 124 | #include "keywords.h" |
fe14fcc3 | 125 | |
ae986130 LW |
126 | #ifdef CLINE |
127 | #undef CLINE | |
128 | #endif | |
3280af22 NIS |
129 | #define CLINE (PL_copline = (PL_curcop->cop_line < PL_copline ? PL_curcop->cop_line : PL_copline)) |
130 | ||
131 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) | |
132 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
133 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
134 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
135 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
136 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
137 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
138 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
139 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
140 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
141 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
142 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
143 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
144 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
145 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
146 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
147 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
148 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
149 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
150 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 151 | |
a687059c LW |
152 | /* This bit of chicanery makes a unary function followed by |
153 | * a parenthesis into a function with one argument, highest precedence. | |
154 | */ | |
2f3197b3 | 155 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
156 | PL_expect = XTERM, \ |
157 | PL_bufptr = s, \ | |
158 | PL_last_uni = PL_oldbufptr, \ | |
159 | PL_last_lop_op = f, \ | |
a687059c LW |
160 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
161 | ||
79072805 | 162 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
163 | PL_bufptr = s, \ |
164 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
165 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
166 | ||
9f68db38 | 167 | /* grandfather return to old style */ |
3280af22 | 168 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 169 | |
76e3520e | 170 | STATIC int |
8ac85365 | 171 | ao(int toketype) |
a0d0e21e | 172 | { |
3280af22 NIS |
173 | if (*PL_bufptr == '=') { |
174 | PL_bufptr++; | |
a0d0e21e LW |
175 | if (toketype == ANDAND) |
176 | yylval.ival = OP_ANDASSIGN; | |
177 | else if (toketype == OROR) | |
178 | yylval.ival = OP_ORASSIGN; | |
179 | toketype = ASSIGNOP; | |
180 | } | |
181 | return toketype; | |
182 | } | |
183 | ||
76e3520e | 184 | STATIC void |
8ac85365 | 185 | no_op(char *what, char *s) |
463ee0b2 | 186 | { |
3280af22 NIS |
187 | char *oldbp = PL_bufptr; |
188 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 189 | |
3280af22 | 190 | PL_bufptr = s; |
46fc3d4c | 191 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 192 | if (is_first) |
a0d0e21e | 193 | warn("\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 194 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 195 | char *t; |
834a4ddd | 196 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 197 | if (t < PL_bufptr && isSPACE(*t)) |
748a9306 | 198 | warn("\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 199 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
200 | |
201 | } | |
202 | else | |
203 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
3280af22 | 204 | PL_bufptr = oldbp; |
8990e307 LW |
205 | } |
206 | ||
76e3520e | 207 | STATIC void |
8ac85365 | 208 | missingterm(char *s) |
8990e307 LW |
209 | { |
210 | char tmpbuf[3]; | |
211 | char q; | |
212 | if (s) { | |
213 | char *nl = strrchr(s,'\n'); | |
d2719217 | 214 | if (nl) |
8990e307 LW |
215 | *nl = '\0'; |
216 | } | |
9d116dd7 JH |
217 | else if ( |
218 | #ifdef EBCDIC | |
219 | iscntrl(PL_multi_close) | |
220 | #else | |
221 | PL_multi_close < 32 || PL_multi_close == 127 | |
222 | #endif | |
223 | ) { | |
8990e307 | 224 | *tmpbuf = '^'; |
3280af22 | 225 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
226 | s = "\\n"; |
227 | tmpbuf[2] = '\0'; | |
228 | s = tmpbuf; | |
229 | } | |
230 | else { | |
3280af22 | 231 | *tmpbuf = PL_multi_close; |
8990e307 LW |
232 | tmpbuf[1] = '\0'; |
233 | s = tmpbuf; | |
234 | } | |
235 | q = strchr(s,'"') ? '\'' : '"'; | |
236 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 237 | } |
79072805 LW |
238 | |
239 | void | |
8ac85365 | 240 | deprecate(char *s) |
a0d0e21e | 241 | { |
d008e5eb | 242 | dTHR; |
599cee73 PM |
243 | if (ckWARN(WARN_DEPRECATED)) |
244 | warner(WARN_DEPRECATED, "Use of %s is deprecated", s); | |
a0d0e21e LW |
245 | } |
246 | ||
76e3520e | 247 | STATIC void |
8ac85365 | 248 | depcom(void) |
a0d0e21e LW |
249 | { |
250 | deprecate("comma-less variable list"); | |
251 | } | |
252 | ||
a868473f NIS |
253 | #ifdef WIN32 |
254 | ||
76e3520e | 255 | STATIC I32 |
a868473f NIS |
256 | win32_textfilter(int idx, SV *sv, int maxlen) |
257 | { | |
258 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
259 | if (count > 0 && !maxlen) | |
260 | win32_strip_return(sv); | |
261 | return count; | |
262 | } | |
263 | #endif | |
264 | ||
dfe13c55 GS |
265 | #ifndef PERL_OBJECT |
266 | ||
a0ed51b3 LW |
267 | STATIC I32 |
268 | utf16_textfilter(int idx, SV *sv, int maxlen) | |
269 | { | |
270 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
271 | if (count) { | |
dfe13c55 GS |
272 | U8* tmps; |
273 | U8* tend; | |
274 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 275 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 276 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
277 | |
278 | } | |
279 | return count; | |
280 | } | |
281 | ||
282 | STATIC I32 | |
283 | utf16rev_textfilter(int idx, SV *sv, int maxlen) | |
284 | { | |
285 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
286 | if (count) { | |
dfe13c55 GS |
287 | U8* tmps; |
288 | U8* tend; | |
289 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 290 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 291 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
292 | |
293 | } | |
294 | return count; | |
295 | } | |
a868473f | 296 | |
dfe13c55 GS |
297 | #endif |
298 | ||
a0d0e21e | 299 | void |
8ac85365 | 300 | lex_start(SV *line) |
79072805 | 301 | { |
0f15f207 | 302 | dTHR; |
8990e307 LW |
303 | char *s; |
304 | STRLEN len; | |
305 | ||
3280af22 NIS |
306 | SAVEI32(PL_lex_dojoin); |
307 | SAVEI32(PL_lex_brackets); | |
308 | SAVEI32(PL_lex_fakebrack); | |
309 | SAVEI32(PL_lex_casemods); | |
310 | SAVEI32(PL_lex_starts); | |
311 | SAVEI32(PL_lex_state); | |
312 | SAVESPTR(PL_lex_inpat); | |
313 | SAVEI32(PL_lex_inwhat); | |
314 | SAVEI16(PL_curcop->cop_line); | |
315 | SAVEPPTR(PL_bufptr); | |
316 | SAVEPPTR(PL_bufend); | |
317 | SAVEPPTR(PL_oldbufptr); | |
318 | SAVEPPTR(PL_oldoldbufptr); | |
319 | SAVEPPTR(PL_linestart); | |
320 | SAVESPTR(PL_linestr); | |
321 | SAVEPPTR(PL_lex_brackstack); | |
322 | SAVEPPTR(PL_lex_casestack); | |
323 | SAVEDESTRUCTOR(restore_rsfp, PL_rsfp); | |
324 | SAVESPTR(PL_lex_stuff); | |
325 | SAVEI32(PL_lex_defer); | |
326 | SAVESPTR(PL_lex_repl); | |
327 | SAVEDESTRUCTOR(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ | |
328 | SAVEDESTRUCTOR(restore_lex_expect, PL_tokenbuf + PL_expect); | |
329 | ||
330 | PL_lex_state = LEX_NORMAL; | |
331 | PL_lex_defer = 0; | |
332 | PL_expect = XSTATE; | |
333 | PL_lex_brackets = 0; | |
334 | PL_lex_fakebrack = 0; | |
335 | New(899, PL_lex_brackstack, 120, char); | |
336 | New(899, PL_lex_casestack, 12, char); | |
337 | SAVEFREEPV(PL_lex_brackstack); | |
338 | SAVEFREEPV(PL_lex_casestack); | |
339 | PL_lex_casemods = 0; | |
340 | *PL_lex_casestack = '\0'; | |
341 | PL_lex_dojoin = 0; | |
342 | PL_lex_starts = 0; | |
343 | PL_lex_stuff = Nullsv; | |
344 | PL_lex_repl = Nullsv; | |
345 | PL_lex_inpat = 0; | |
346 | PL_lex_inwhat = 0; | |
347 | PL_linestr = line; | |
348 | if (SvREADONLY(PL_linestr)) | |
349 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
350 | s = SvPV(PL_linestr, len); | |
8990e307 | 351 | if (len && s[len-1] != ';') { |
3280af22 NIS |
352 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
353 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
354 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 355 | } |
3280af22 NIS |
356 | SvTEMP_off(PL_linestr); |
357 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
358 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
359 | SvREFCNT_dec(PL_rs); | |
360 | PL_rs = newSVpv("\n", 1); | |
361 | PL_rsfp = 0; | |
79072805 | 362 | } |
a687059c | 363 | |
463ee0b2 | 364 | void |
8ac85365 | 365 | lex_end(void) |
463ee0b2 | 366 | { |
3280af22 | 367 | PL_doextract = FALSE; |
463ee0b2 LW |
368 | } |
369 | ||
76e3520e | 370 | STATIC void |
8ac85365 | 371 | restore_rsfp(void *f) |
6d5fb7e3 | 372 | { |
760ac839 | 373 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 374 | |
3280af22 NIS |
375 | if (PL_rsfp == PerlIO_stdin()) |
376 | PerlIO_clearerr(PL_rsfp); | |
377 | else if (PL_rsfp && (PL_rsfp != fp)) | |
378 | PerlIO_close(PL_rsfp); | |
379 | PL_rsfp = fp; | |
6d5fb7e3 CS |
380 | } |
381 | ||
76e3520e | 382 | STATIC void |
7fae4e64 | 383 | restore_expect(void *e) |
49d8d3a1 MB |
384 | { |
385 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 386 | PL_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
387 | } |
388 | ||
837485b6 | 389 | STATIC void |
7fae4e64 | 390 | restore_lex_expect(void *e) |
49d8d3a1 MB |
391 | { |
392 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 393 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
394 | } |
395 | ||
837485b6 | 396 | STATIC void |
8ac85365 | 397 | incline(char *s) |
463ee0b2 | 398 | { |
0f15f207 | 399 | dTHR; |
463ee0b2 LW |
400 | char *t; |
401 | char *n; | |
402 | char ch; | |
403 | int sawline = 0; | |
404 | ||
3280af22 | 405 | PL_curcop->cop_line++; |
463ee0b2 LW |
406 | if (*s++ != '#') |
407 | return; | |
408 | while (*s == ' ' || *s == '\t') s++; | |
409 | if (strnEQ(s, "line ", 5)) { | |
410 | s += 5; | |
411 | sawline = 1; | |
412 | } | |
413 | if (!isDIGIT(*s)) | |
414 | return; | |
415 | n = s; | |
416 | while (isDIGIT(*s)) | |
417 | s++; | |
418 | while (*s == ' ' || *s == '\t') | |
419 | s++; | |
420 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
421 | s++; | |
422 | else { | |
423 | if (!sawline) | |
424 | return; /* false alarm */ | |
425 | for (t = s; !isSPACE(*t); t++) ; | |
426 | } | |
427 | ch = *t; | |
428 | *t = '\0'; | |
429 | if (t - s > 0) | |
3280af22 | 430 | PL_curcop->cop_filegv = gv_fetchfile(s); |
463ee0b2 | 431 | else |
3280af22 | 432 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
463ee0b2 | 433 | *t = ch; |
3280af22 | 434 | PL_curcop->cop_line = atoi(n)-1; |
463ee0b2 LW |
435 | } |
436 | ||
76e3520e | 437 | STATIC char * |
8ac85365 | 438 | skipspace(register char *s) |
a687059c | 439 | { |
11343788 | 440 | dTHR; |
3280af22 NIS |
441 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
442 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
443 | s++; |
444 | return s; | |
445 | } | |
446 | for (;;) { | |
fd049845 | 447 | STRLEN prevlen; |
60e6418e GS |
448 | while (s < PL_bufend && isSPACE(*s)) { |
449 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
450 | incline(s); | |
451 | } | |
3280af22 NIS |
452 | if (s < PL_bufend && *s == '#') { |
453 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 454 | s++; |
60e6418e | 455 | if (s < PL_bufend) { |
463ee0b2 | 456 | s++; |
60e6418e GS |
457 | if (PL_in_eval && !PL_rsfp) { |
458 | incline(s); | |
459 | continue; | |
460 | } | |
461 | } | |
463ee0b2 | 462 | } |
3280af22 | 463 | if (s < PL_bufend || !PL_rsfp || PL_lex_state != LEX_NORMAL) |
463ee0b2 | 464 | return s; |
3280af22 NIS |
465 | if ((s = filter_gets(PL_linestr, PL_rsfp, (prevlen = SvCUR(PL_linestr)))) == Nullch) { |
466 | if (PL_minus_n || PL_minus_p) { | |
467 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
468 | ";}continue{print or die qq(-p destination: $!\\n)" : |
469 | ""); | |
3280af22 NIS |
470 | sv_catpv(PL_linestr,";}"); |
471 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
472 | } |
473 | else | |
3280af22 NIS |
474 | sv_setpv(PL_linestr,";"); |
475 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
476 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
477 | if (PL_preprocess && !PL_in_eval) | |
478 | (void)PerlProc_pclose(PL_rsfp); | |
479 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
480 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 481 | else |
3280af22 NIS |
482 | (void)PerlIO_close(PL_rsfp); |
483 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
484 | return s; |
485 | } | |
3280af22 NIS |
486 | PL_linestart = PL_bufptr = s + prevlen; |
487 | PL_bufend = s + SvCUR(PL_linestr); | |
488 | s = PL_bufptr; | |
a0d0e21e | 489 | incline(s); |
3280af22 | 490 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
491 | SV *sv = NEWSV(85,0); |
492 | ||
493 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
494 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
495 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
8990e307 | 496 | } |
463ee0b2 | 497 | } |
a687059c | 498 | } |
378cc40b | 499 | |
76e3520e | 500 | STATIC void |
8ac85365 | 501 | check_uni(void) { |
2f3197b3 LW |
502 | char *s; |
503 | char ch; | |
a0d0e21e | 504 | char *t; |
2f3197b3 | 505 | |
3280af22 | 506 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 507 | return; |
3280af22 NIS |
508 | while (isSPACE(*PL_last_uni)) |
509 | PL_last_uni++; | |
834a4ddd | 510 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 511 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 512 | return; |
2f3197b3 LW |
513 | ch = *s; |
514 | *s = '\0'; | |
3280af22 | 515 | warn("Warning: Use of \"%s\" without parens is ambiguous", PL_last_uni); |
2f3197b3 LW |
516 | *s = ch; |
517 | } | |
518 | ||
ffed7fef LW |
519 | #ifdef CRIPPLED_CC |
520 | ||
521 | #undef UNI | |
ffed7fef | 522 | #define UNI(f) return uni(f,s) |
ffed7fef | 523 | |
76e3520e | 524 | STATIC int |
8ac85365 | 525 | uni(I32 f, char *s) |
ffed7fef LW |
526 | { |
527 | yylval.ival = f; | |
3280af22 NIS |
528 | PL_expect = XTERM; |
529 | PL_bufptr = s; | |
8f872242 NIS |
530 | PL_last_uni = PL_oldbufptr; |
531 | PL_last_lop_op = f; | |
ffed7fef LW |
532 | if (*s == '(') |
533 | return FUNC1; | |
534 | s = skipspace(s); | |
535 | if (*s == '(') | |
536 | return FUNC1; | |
537 | else | |
538 | return UNIOP; | |
539 | } | |
540 | ||
a0d0e21e LW |
541 | #endif /* CRIPPLED_CC */ |
542 | ||
543 | #define LOP(f,x) return lop(f,x,s) | |
544 | ||
76e3520e | 545 | STATIC I32 |
0fa19009 | 546 | lop(I32 f, expectation x, char *s) |
ffed7fef | 547 | { |
0f15f207 | 548 | dTHR; |
79072805 | 549 | yylval.ival = f; |
35c8bce7 | 550 | CLINE; |
3280af22 NIS |
551 | PL_expect = x; |
552 | PL_bufptr = s; | |
553 | PL_last_lop = PL_oldbufptr; | |
554 | PL_last_lop_op = f; | |
555 | if (PL_nexttoke) | |
a0d0e21e | 556 | return LSTOP; |
79072805 LW |
557 | if (*s == '(') |
558 | return FUNC; | |
559 | s = skipspace(s); | |
560 | if (*s == '(') | |
561 | return FUNC; | |
562 | else | |
563 | return LSTOP; | |
564 | } | |
565 | ||
76e3520e | 566 | STATIC void |
8ac85365 | 567 | force_next(I32 type) |
79072805 | 568 | { |
3280af22 NIS |
569 | PL_nexttype[PL_nexttoke] = type; |
570 | PL_nexttoke++; | |
571 | if (PL_lex_state != LEX_KNOWNEXT) { | |
572 | PL_lex_defer = PL_lex_state; | |
573 | PL_lex_expect = PL_expect; | |
574 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
575 | } |
576 | } | |
577 | ||
76e3520e | 578 | STATIC char * |
15f0808c | 579 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 580 | { |
463ee0b2 LW |
581 | register char *s; |
582 | STRLEN len; | |
583 | ||
584 | start = skipspace(start); | |
585 | s = start; | |
834a4ddd | 586 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 587 | (allow_pack && *s == ':') || |
15f0808c | 588 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 589 | { |
3280af22 NIS |
590 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
591 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
592 | return start; |
593 | if (token == METHOD) { | |
594 | s = skipspace(s); | |
595 | if (*s == '(') | |
3280af22 | 596 | PL_expect = XTERM; |
463ee0b2 | 597 | else { |
3280af22 | 598 | PL_expect = XOPERATOR; |
463ee0b2 LW |
599 | force_next(')'); |
600 | force_next('('); | |
601 | } | |
79072805 | 602 | } |
3280af22 NIS |
603 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
604 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
605 | force_next(token); |
606 | } | |
607 | return s; | |
608 | } | |
609 | ||
76e3520e | 610 | STATIC void |
8ac85365 | 611 | force_ident(register char *s, int kind) |
79072805 LW |
612 | { |
613 | if (s && *s) { | |
11343788 | 614 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 615 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 616 | force_next(WORD); |
748a9306 | 617 | if (kind) { |
e858de61 | 618 | dTHR; /* just for in_eval */ |
11343788 | 619 | o->op_private = OPpCONST_ENTERED; |
55497cff | 620 | /* XXX see note in pp_entereval() for why we forgo typo |
621 | warnings if the symbol must be introduced in an eval. | |
622 | GSAR 96-10-12 */ | |
3280af22 | 623 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
624 | kind == '$' ? SVt_PV : |
625 | kind == '@' ? SVt_PVAV : | |
626 | kind == '%' ? SVt_PVHV : | |
627 | SVt_PVGV | |
628 | ); | |
748a9306 | 629 | } |
79072805 LW |
630 | } |
631 | } | |
632 | ||
76e3520e | 633 | STATIC char * |
8ac85365 | 634 | force_version(char *s) |
89bfa8cd | 635 | { |
636 | OP *version = Nullop; | |
637 | ||
638 | s = skipspace(s); | |
639 | ||
640 | /* default VERSION number -- GBARR */ | |
641 | ||
642 | if(isDIGIT(*s)) { | |
643 | char *d; | |
644 | int c; | |
55497cff | 645 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 646 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
647 | s = scan_num(s); | |
648 | /* real VERSION number -- GBARR */ | |
649 | version = yylval.opval; | |
650 | } | |
651 | } | |
652 | ||
653 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 654 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 655 | force_next(WORD); |
656 | ||
657 | return (s); | |
658 | } | |
659 | ||
76e3520e GS |
660 | STATIC SV * |
661 | tokeq(SV *sv) | |
79072805 LW |
662 | { |
663 | register char *s; | |
664 | register char *send; | |
665 | register char *d; | |
b3ac6de7 IZ |
666 | STRLEN len = 0; |
667 | SV *pv = sv; | |
79072805 LW |
668 | |
669 | if (!SvLEN(sv)) | |
b3ac6de7 | 670 | goto finish; |
79072805 | 671 | |
a0d0e21e | 672 | s = SvPV_force(sv, len); |
748a9306 | 673 | if (SvIVX(sv) == -1) |
b3ac6de7 | 674 | goto finish; |
463ee0b2 | 675 | send = s + len; |
79072805 LW |
676 | while (s < send && *s != '\\') |
677 | s++; | |
678 | if (s == send) | |
b3ac6de7 | 679 | goto finish; |
79072805 | 680 | d = s; |
3280af22 | 681 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 682 | pv = sv_2mortal(newSVpv(SvPVX(pv), len)); |
79072805 LW |
683 | while (s < send) { |
684 | if (*s == '\\') { | |
a0d0e21e | 685 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
686 | s++; /* all that, just for this */ |
687 | } | |
688 | *d++ = *s++; | |
689 | } | |
690 | *d = '\0'; | |
463ee0b2 | 691 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 692 | finish: |
3280af22 | 693 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 694 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
695 | return sv; |
696 | } | |
697 | ||
76e3520e | 698 | STATIC I32 |
8ac85365 | 699 | sublex_start(void) |
79072805 LW |
700 | { |
701 | register I32 op_type = yylval.ival; | |
79072805 LW |
702 | |
703 | if (op_type == OP_NULL) { | |
3280af22 NIS |
704 | yylval.opval = PL_lex_op; |
705 | PL_lex_op = Nullop; | |
79072805 LW |
706 | return THING; |
707 | } | |
708 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 709 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
710 | |
711 | if (SvTYPE(sv) == SVt_PVIV) { | |
712 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
713 | STRLEN len; | |
714 | char *p; | |
715 | SV *nsv; | |
716 | ||
717 | p = SvPV(sv, len); | |
718 | nsv = newSVpv(p, len); | |
719 | SvREFCNT_dec(sv); | |
720 | sv = nsv; | |
721 | } | |
722 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 723 | PL_lex_stuff = Nullsv; |
79072805 LW |
724 | return THING; |
725 | } | |
726 | ||
3280af22 NIS |
727 | PL_sublex_info.super_state = PL_lex_state; |
728 | PL_sublex_info.sub_inwhat = op_type; | |
729 | PL_sublex_info.sub_op = PL_lex_op; | |
730 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 731 | |
3280af22 NIS |
732 | PL_expect = XTERM; |
733 | if (PL_lex_op) { | |
734 | yylval.opval = PL_lex_op; | |
735 | PL_lex_op = Nullop; | |
55497cff | 736 | return PMFUNC; |
737 | } | |
738 | else | |
739 | return FUNC; | |
740 | } | |
741 | ||
76e3520e | 742 | STATIC I32 |
8ac85365 | 743 | sublex_push(void) |
55497cff | 744 | { |
0f15f207 | 745 | dTHR; |
f46d017c | 746 | ENTER; |
55497cff | 747 | |
3280af22 NIS |
748 | PL_lex_state = PL_sublex_info.super_state; |
749 | SAVEI32(PL_lex_dojoin); | |
750 | SAVEI32(PL_lex_brackets); | |
751 | SAVEI32(PL_lex_fakebrack); | |
752 | SAVEI32(PL_lex_casemods); | |
753 | SAVEI32(PL_lex_starts); | |
754 | SAVEI32(PL_lex_state); | |
755 | SAVESPTR(PL_lex_inpat); | |
756 | SAVEI32(PL_lex_inwhat); | |
757 | SAVEI16(PL_curcop->cop_line); | |
758 | SAVEPPTR(PL_bufptr); | |
759 | SAVEPPTR(PL_oldbufptr); | |
760 | SAVEPPTR(PL_oldoldbufptr); | |
761 | SAVEPPTR(PL_linestart); | |
762 | SAVESPTR(PL_linestr); | |
763 | SAVEPPTR(PL_lex_brackstack); | |
764 | SAVEPPTR(PL_lex_casestack); | |
765 | ||
766 | PL_linestr = PL_lex_stuff; | |
767 | PL_lex_stuff = Nullsv; | |
768 | ||
769 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
770 | PL_bufend += SvCUR(PL_linestr); | |
771 | SAVEFREESV(PL_linestr); | |
772 | ||
773 | PL_lex_dojoin = FALSE; | |
774 | PL_lex_brackets = 0; | |
775 | PL_lex_fakebrack = 0; | |
776 | New(899, PL_lex_brackstack, 120, char); | |
777 | New(899, PL_lex_casestack, 12, char); | |
778 | SAVEFREEPV(PL_lex_brackstack); | |
779 | SAVEFREEPV(PL_lex_casestack); | |
780 | PL_lex_casemods = 0; | |
781 | *PL_lex_casestack = '\0'; | |
782 | PL_lex_starts = 0; | |
783 | PL_lex_state = LEX_INTERPCONCAT; | |
784 | PL_curcop->cop_line = PL_multi_start; | |
785 | ||
786 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
787 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
788 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 789 | else |
3280af22 | 790 | PL_lex_inpat = Nullop; |
79072805 | 791 | |
55497cff | 792 | return '('; |
79072805 LW |
793 | } |
794 | ||
76e3520e | 795 | STATIC I32 |
8ac85365 | 796 | sublex_done(void) |
79072805 | 797 | { |
3280af22 NIS |
798 | if (!PL_lex_starts++) { |
799 | PL_expect = XOPERATOR; | |
93a17b20 | 800 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0)); |
79072805 LW |
801 | return THING; |
802 | } | |
803 | ||
3280af22 NIS |
804 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
805 | PL_lex_state = LEX_INTERPCASEMOD; | |
e4bfbdd4 | 806 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
807 | } |
808 | ||
79072805 | 809 | /* Is there a right-hand side to take care of? */ |
3280af22 NIS |
810 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
811 | PL_linestr = PL_lex_repl; | |
812 | PL_lex_inpat = 0; | |
813 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
814 | PL_bufend += SvCUR(PL_linestr); | |
815 | SAVEFREESV(PL_linestr); | |
816 | PL_lex_dojoin = FALSE; | |
817 | PL_lex_brackets = 0; | |
818 | PL_lex_fakebrack = 0; | |
819 | PL_lex_casemods = 0; | |
820 | *PL_lex_casestack = '\0'; | |
821 | PL_lex_starts = 0; | |
822 | if (SvCOMPILED(PL_lex_repl)) { | |
823 | PL_lex_state = LEX_INTERPNORMAL; | |
824 | PL_lex_starts++; | |
79072805 LW |
825 | } |
826 | else | |
3280af22 NIS |
827 | PL_lex_state = LEX_INTERPCONCAT; |
828 | PL_lex_repl = Nullsv; | |
79072805 | 829 | return ','; |
ffed7fef LW |
830 | } |
831 | else { | |
f46d017c | 832 | LEAVE; |
3280af22 NIS |
833 | PL_bufend = SvPVX(PL_linestr); |
834 | PL_bufend += SvCUR(PL_linestr); | |
835 | PL_expect = XOPERATOR; | |
79072805 | 836 | return ')'; |
ffed7fef LW |
837 | } |
838 | } | |
839 | ||
02aa26ce NT |
840 | /* |
841 | scan_const | |
842 | ||
843 | Extracts a pattern, double-quoted string, or transliteration. This | |
844 | is terrifying code. | |
845 | ||
3280af22 NIS |
846 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
847 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
848 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
849 | ||
9b599b2a GS |
850 | Returns a pointer to the character scanned up to. Iff this is |
851 | advanced from the start pointer supplied (ie if anything was | |
852 | successfully parsed), will leave an OP for the substring scanned | |
853 | in yylval. Caller must intuit reason for not parsing further | |
854 | by looking at the next characters herself. | |
855 | ||
02aa26ce NT |
856 | In patterns: |
857 | backslashes: | |
858 | double-quoted style: \r and \n | |
859 | regexp special ones: \D \s | |
860 | constants: \x3 | |
861 | backrefs: \1 (deprecated in substitution replacements) | |
862 | case and quoting: \U \Q \E | |
863 | stops on @ and $, but not for $ as tail anchor | |
864 | ||
865 | In transliterations: | |
866 | characters are VERY literal, except for - not at the start or end | |
867 | of the string, which indicates a range. scan_const expands the | |
868 | range to the full set of intermediate characters. | |
869 | ||
870 | In double-quoted strings: | |
871 | backslashes: | |
872 | double-quoted style: \r and \n | |
873 | constants: \x3 | |
874 | backrefs: \1 (deprecated) | |
875 | case and quoting: \U \Q \E | |
876 | stops on @ and $ | |
877 | ||
878 | scan_const does *not* construct ops to handle interpolated strings. | |
879 | It stops processing as soon as it finds an embedded $ or @ variable | |
880 | and leaves it to the caller to work out what's going on. | |
881 | ||
882 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
883 | ||
884 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
885 | it's a tail anchor if $ is the last thing in the string, or if it's | |
886 | followed by one of ")| \n\t" | |
887 | ||
888 | \1 (backreferences) are turned into $1 | |
889 | ||
890 | The structure of the code is | |
891 | while (there's a character to process) { | |
892 | handle transliteration ranges | |
893 | skip regexp comments | |
894 | skip # initiated comments in //x patterns | |
895 | check for embedded @foo | |
896 | check for embedded scalars | |
897 | if (backslash) { | |
898 | leave intact backslashes from leave (below) | |
899 | deprecate \1 in strings and sub replacements | |
900 | handle string-changing backslashes \l \U \Q \E, etc. | |
901 | switch (what was escaped) { | |
902 | handle - in a transliteration (becomes a literal -) | |
903 | handle \132 octal characters | |
904 | handle 0x15 hex characters | |
905 | handle \cV (control V) | |
906 | handle printf backslashes (\f, \r, \n, etc) | |
907 | } (end switch) | |
908 | } (end if backslash) | |
909 | } (end while character to read) | |
910 | ||
911 | */ | |
912 | ||
76e3520e | 913 | STATIC char * |
8ac85365 | 914 | scan_const(char *start) |
79072805 | 915 | { |
3280af22 | 916 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
917 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
918 | register char *s = start; /* start of the constant */ | |
919 | register char *d = SvPVX(sv); /* destination for copies */ | |
920 | bool dorange = FALSE; /* are we in a translit range? */ | |
921 | I32 len; /* ? */ | |
a0ed51b3 LW |
922 | I32 utf = PL_lex_inwhat == OP_TRANS |
923 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
924 | : UTF; | |
925 | I32 thisutf = PL_lex_inwhat == OP_TRANS | |
926 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
927 | : UTF; | |
02aa26ce | 928 | |
9b599b2a | 929 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 930 | char *leaveit = |
3280af22 | 931 | PL_lex_inpat |
a0ed51b3 | 932 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 933 | : ""; |
79072805 LW |
934 | |
935 | while (s < send || dorange) { | |
02aa26ce | 936 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 937 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 938 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 939 | if (dorange) { |
02aa26ce | 940 | I32 i; /* current expanded character */ |
8ada0baa | 941 | I32 min; /* first character in range */ |
02aa26ce NT |
942 | I32 max; /* last character in range */ |
943 | ||
944 | i = d - SvPVX(sv); /* remember current offset */ | |
945 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
946 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
947 | d -= 2; /* eat the first char and the - */ | |
948 | ||
8ada0baa JH |
949 | min = (U8)*d; /* first char in range */ |
950 | max = (U8)d[1]; /* last char in range */ | |
951 | ||
952 | #ifndef ASCIIish | |
953 | if ((isLOWER(min) && isLOWER(max)) || | |
954 | (isUPPER(min) && isUPPER(max))) { | |
955 | if (isLOWER(min)) { | |
956 | for (i = min; i <= max; i++) | |
957 | if (isLOWER(i)) | |
958 | *d++ = i; | |
959 | } else { | |
960 | for (i = min; i <= max; i++) | |
961 | if (isUPPER(i)) | |
962 | *d++ = i; | |
963 | } | |
964 | } | |
965 | else | |
966 | #endif | |
967 | for (i = min; i <= max; i++) | |
968 | *d++ = i; | |
02aa26ce NT |
969 | |
970 | /* mark the range as done, and continue */ | |
79072805 LW |
971 | dorange = FALSE; |
972 | continue; | |
973 | } | |
02aa26ce NT |
974 | |
975 | /* range begins (ignore - as first or last char) */ | |
79072805 | 976 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 977 | if (utf) { |
a176fa2a | 978 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
979 | s++; |
980 | continue; | |
981 | } | |
79072805 LW |
982 | dorange = TRUE; |
983 | s++; | |
984 | } | |
985 | } | |
02aa26ce NT |
986 | |
987 | /* if we get here, we're not doing a transliteration */ | |
988 | ||
0f5d15d6 IZ |
989 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
990 | except for the last char, which will be done separately. */ | |
3280af22 | 991 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
992 | if (s[2] == '#') { |
993 | while (s < send && *s != ')') | |
994 | *d++ = *s++; | |
0f5d15d6 IZ |
995 | } else if (s[2] == '{' |
996 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 997 | I32 count = 1; |
0f5d15d6 | 998 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
999 | char c; |
1000 | ||
d9f97599 GS |
1001 | while (count && (c = *regparse)) { |
1002 | if (c == '\\' && regparse[1]) | |
1003 | regparse++; | |
cc6b7395 IZ |
1004 | else if (c == '{') |
1005 | count++; | |
1006 | else if (c == '}') | |
1007 | count--; | |
d9f97599 | 1008 | regparse++; |
cc6b7395 | 1009 | } |
5bdf89e7 IZ |
1010 | if (*regparse != ')') { |
1011 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1012 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1013 | } |
0f5d15d6 | 1014 | while (s < regparse) |
cc6b7395 IZ |
1015 | *d++ = *s++; |
1016 | } | |
748a9306 | 1017 | } |
02aa26ce NT |
1018 | |
1019 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1020 | else if (*s == '#' && PL_lex_inpat && |
1021 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1022 | while (s+1 < send && *s != '\n') |
1023 | *d++ = *s++; | |
1024 | } | |
02aa26ce NT |
1025 | |
1026 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1027 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1028 | break; |
02aa26ce NT |
1029 | |
1030 | /* check for embedded scalars. only stop if we're sure it's a | |
1031 | variable. | |
1032 | */ | |
79072805 | 1033 | else if (*s == '$') { |
3280af22 | 1034 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1035 | break; |
c277df42 | 1036 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1037 | break; /* in regexp, $ might be tail anchor */ |
1038 | } | |
02aa26ce | 1039 | |
a0ed51b3 LW |
1040 | /* (now in tr/// code again) */ |
1041 | ||
d008e5eb GS |
1042 | if (*s & 0x80 && thisutf) { |
1043 | dTHR; /* only for ckWARN */ | |
1044 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1045 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1046 | if (len) { |
1047 | while (len--) | |
1048 | *d++ = *s++; | |
1049 | continue; | |
1050 | } | |
a0ed51b3 LW |
1051 | } |
1052 | } | |
1053 | ||
02aa26ce | 1054 | /* backslashes */ |
79072805 LW |
1055 | if (*s == '\\' && s+1 < send) { |
1056 | s++; | |
02aa26ce NT |
1057 | |
1058 | /* some backslashes we leave behind */ | |
c9f97d15 | 1059 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1060 | *d++ = '\\'; |
1061 | *d++ = *s++; | |
1062 | continue; | |
1063 | } | |
02aa26ce NT |
1064 | |
1065 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1066 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1067 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1068 | { |
d008e5eb | 1069 | dTHR; /* only for ckWARN */ |
599cee73 PM |
1070 | if (ckWARN(WARN_SYNTAX)) |
1071 | warner(WARN_SYNTAX, "\\%c better written as $%c", *s, *s); | |
79072805 LW |
1072 | *--s = '$'; |
1073 | break; | |
1074 | } | |
02aa26ce NT |
1075 | |
1076 | /* string-change backslash escapes */ | |
3280af22 | 1077 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1078 | --s; |
1079 | break; | |
1080 | } | |
02aa26ce NT |
1081 | |
1082 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1083 | switch (*s) { |
02aa26ce NT |
1084 | |
1085 | /* quoted - in transliterations */ | |
79072805 | 1086 | case '-': |
3280af22 | 1087 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1088 | *d++ = *s++; |
1089 | continue; | |
1090 | } | |
1091 | /* FALL THROUGH */ | |
02aa26ce | 1092 | /* default action is to copy the quoted character */ |
79072805 | 1093 | default: |
c9f97d15 IZ |
1094 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) |
1095 | warner(WARN_UNSAFE, | |
1096 | "Unrecognized escape \\%c passed through", | |
1097 | *s); | |
79072805 LW |
1098 | *d++ = *s++; |
1099 | continue; | |
02aa26ce NT |
1100 | |
1101 | /* \132 indicates an octal constant */ | |
79072805 LW |
1102 | case '0': case '1': case '2': case '3': |
1103 | case '4': case '5': case '6': case '7': | |
1104 | *d++ = scan_oct(s, 3, &len); | |
1105 | s += len; | |
1106 | continue; | |
02aa26ce NT |
1107 | |
1108 | /* \x24 indicates a hex constant */ | |
79072805 | 1109 | case 'x': |
a0ed51b3 LW |
1110 | ++s; |
1111 | if (*s == '{') { | |
1112 | char* e = strchr(s, '}'); | |
1113 | ||
adaeee49 | 1114 | if (!e) { |
a0ed51b3 | 1115 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1116 | e = s; |
1117 | } | |
d008e5eb GS |
1118 | if (!utf) { |
1119 | dTHR; | |
1120 | if (ckWARN(WARN_UTF8)) | |
1121 | warner(WARN_UTF8, | |
1122 | "Use of \\x{} without utf8 declaration"); | |
1123 | } | |
a0ed51b3 | 1124 | /* note: utf always shorter than hex */ |
dfe13c55 GS |
1125 | d = (char*)uv_to_utf8((U8*)d, |
1126 | scan_hex(s + 1, e - s - 1, &len)); | |
a0ed51b3 LW |
1127 | s = e + 1; |
1128 | ||
1129 | } | |
1130 | else { | |
1131 | UV uv = (UV)scan_hex(s, 2, &len); | |
1132 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1133 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1134 | { | |
dfe13c55 | 1135 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1136 | } |
1137 | else { | |
d008e5eb GS |
1138 | if (uv >= 127 && UTF) { |
1139 | dTHR; | |
1140 | if (ckWARN(WARN_UTF8)) | |
1141 | warner(WARN_UTF8, | |
1142 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", | |
1143 | len,s,len,s); | |
1144 | } | |
a0ed51b3 LW |
1145 | *d++ = (char)uv; |
1146 | } | |
1147 | s += len; | |
1148 | } | |
79072805 | 1149 | continue; |
02aa26ce NT |
1150 | |
1151 | /* \c is a control character */ | |
79072805 LW |
1152 | case 'c': |
1153 | s++; | |
9d116dd7 JH |
1154 | #ifdef EBCDIC |
1155 | *d = *s++; | |
1156 | if (isLOWER(*d)) | |
1157 | *d = toUPPER(*d); | |
1158 | *d++ = toCTRL(*d); | |
1159 | #else | |
bbce6d69 | 1160 | len = *s++; |
1161 | *d++ = toCTRL(len); | |
9d116dd7 | 1162 | #endif |
79072805 | 1163 | continue; |
02aa26ce NT |
1164 | |
1165 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1166 | case 'b': |
1167 | *d++ = '\b'; | |
1168 | break; | |
1169 | case 'n': | |
1170 | *d++ = '\n'; | |
1171 | break; | |
1172 | case 'r': | |
1173 | *d++ = '\r'; | |
1174 | break; | |
1175 | case 'f': | |
1176 | *d++ = '\f'; | |
1177 | break; | |
1178 | case 't': | |
1179 | *d++ = '\t'; | |
1180 | break; | |
1181 | case 'e': | |
1182 | *d++ = '\033'; | |
1183 | break; | |
1184 | case 'a': | |
1185 | *d++ = '\007'; | |
1186 | break; | |
02aa26ce NT |
1187 | } /* end switch */ |
1188 | ||
79072805 LW |
1189 | s++; |
1190 | continue; | |
02aa26ce NT |
1191 | } /* end if (backslash) */ |
1192 | ||
79072805 | 1193 | *d++ = *s++; |
02aa26ce NT |
1194 | } /* while loop to process each character */ |
1195 | ||
1196 | /* terminate the string and set up the sv */ | |
79072805 | 1197 | *d = '\0'; |
463ee0b2 | 1198 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1199 | SvPOK_on(sv); |
1200 | ||
02aa26ce | 1201 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1202 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1203 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1204 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1205 | } |
02aa26ce | 1206 | |
9b599b2a | 1207 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1208 | if (s > PL_bufptr) { |
1209 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1210 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1211 | sv, Nullsv, |
3280af22 | 1212 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1213 | ? "tr" |
3280af22 | 1214 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1215 | ? "s" |
1216 | : "qq"))); | |
79072805 | 1217 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1218 | } else |
8990e307 | 1219 | SvREFCNT_dec(sv); |
79072805 LW |
1220 | return s; |
1221 | } | |
1222 | ||
1223 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
76e3520e | 1224 | STATIC int |
8ac85365 | 1225 | intuit_more(register char *s) |
79072805 | 1226 | { |
3280af22 | 1227 | if (PL_lex_brackets) |
79072805 LW |
1228 | return TRUE; |
1229 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1230 | return TRUE; | |
1231 | if (*s != '{' && *s != '[') | |
1232 | return FALSE; | |
3280af22 | 1233 | if (!PL_lex_inpat) |
79072805 LW |
1234 | return TRUE; |
1235 | ||
1236 | /* In a pattern, so maybe we have {n,m}. */ | |
1237 | if (*s == '{') { | |
1238 | s++; | |
1239 | if (!isDIGIT(*s)) | |
1240 | return TRUE; | |
1241 | while (isDIGIT(*s)) | |
1242 | s++; | |
1243 | if (*s == ',') | |
1244 | s++; | |
1245 | while (isDIGIT(*s)) | |
1246 | s++; | |
1247 | if (*s == '}') | |
1248 | return FALSE; | |
1249 | return TRUE; | |
1250 | ||
1251 | } | |
1252 | ||
1253 | /* On the other hand, maybe we have a character class */ | |
1254 | ||
1255 | s++; | |
1256 | if (*s == ']' || *s == '^') | |
1257 | return FALSE; | |
1258 | else { | |
1259 | int weight = 2; /* let's weigh the evidence */ | |
1260 | char seen[256]; | |
f27ffc4a | 1261 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1262 | char *send = strchr(s,']'); |
3280af22 | 1263 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1264 | |
1265 | if (!send) /* has to be an expression */ | |
1266 | return TRUE; | |
1267 | ||
1268 | Zero(seen,256,char); | |
1269 | if (*s == '$') | |
1270 | weight -= 3; | |
1271 | else if (isDIGIT(*s)) { | |
1272 | if (s[1] != ']') { | |
1273 | if (isDIGIT(s[1]) && s[2] == ']') | |
1274 | weight -= 10; | |
1275 | } | |
1276 | else | |
1277 | weight -= 100; | |
1278 | } | |
1279 | for (; s < send; s++) { | |
1280 | last_un_char = un_char; | |
1281 | un_char = (unsigned char)*s; | |
1282 | switch (*s) { | |
1283 | case '@': | |
1284 | case '&': | |
1285 | case '$': | |
1286 | weight -= seen[un_char] * 10; | |
834a4ddd | 1287 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1288 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1289 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1290 | weight -= 100; |
1291 | else | |
1292 | weight -= 10; | |
1293 | } | |
1294 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1295 | strchr("[#!%*<>()-=",s[1])) { |
1296 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1297 | weight -= 10; |
1298 | else | |
1299 | weight -= 1; | |
1300 | } | |
1301 | break; | |
1302 | case '\\': | |
1303 | un_char = 254; | |
1304 | if (s[1]) { | |
93a17b20 | 1305 | if (strchr("wds]",s[1])) |
79072805 LW |
1306 | weight += 100; |
1307 | else if (seen['\''] || seen['"']) | |
1308 | weight += 1; | |
93a17b20 | 1309 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1310 | weight += 40; |
1311 | else if (isDIGIT(s[1])) { | |
1312 | weight += 40; | |
1313 | while (s[1] && isDIGIT(s[1])) | |
1314 | s++; | |
1315 | } | |
1316 | } | |
1317 | else | |
1318 | weight += 100; | |
1319 | break; | |
1320 | case '-': | |
1321 | if (s[1] == '\\') | |
1322 | weight += 50; | |
93a17b20 | 1323 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1324 | weight += 30; |
93a17b20 | 1325 | if (strchr("zZ79~",s[1])) |
79072805 | 1326 | weight += 30; |
f27ffc4a GS |
1327 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1328 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1329 | break; |
1330 | default: | |
93a17b20 | 1331 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1332 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1333 | char *d = tmpbuf; | |
1334 | while (isALPHA(*s)) | |
1335 | *d++ = *s++; | |
1336 | *d = '\0'; | |
1337 | if (keyword(tmpbuf, d - tmpbuf)) | |
1338 | weight -= 150; | |
1339 | } | |
1340 | if (un_char == last_un_char + 1) | |
1341 | weight += 5; | |
1342 | weight -= seen[un_char]; | |
1343 | break; | |
1344 | } | |
1345 | seen[un_char]++; | |
1346 | } | |
1347 | if (weight >= 0) /* probably a character class */ | |
1348 | return FALSE; | |
1349 | } | |
1350 | ||
1351 | return TRUE; | |
1352 | } | |
ffed7fef | 1353 | |
76e3520e | 1354 | STATIC int |
8ac85365 | 1355 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1356 | { |
1357 | char *s = start + (*start == '$'); | |
3280af22 | 1358 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1359 | STRLEN len; |
1360 | GV* indirgv; | |
1361 | ||
1362 | if (gv) { | |
b6c543e3 | 1363 | CV *cv; |
a0d0e21e LW |
1364 | if (GvIO(gv)) |
1365 | return 0; | |
b6c543e3 IZ |
1366 | if ((cv = GvCVu(gv))) { |
1367 | char *proto = SvPVX(cv); | |
1368 | if (proto) { | |
1369 | if (*proto == ';') | |
1370 | proto++; | |
1371 | if (*proto == '*') | |
1372 | return 0; | |
1373 | } | |
1374 | } else | |
a0d0e21e LW |
1375 | gv = 0; |
1376 | } | |
8903cb82 | 1377 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e | 1378 | if (*start == '$') { |
3280af22 | 1379 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1380 | return 0; |
1381 | s = skipspace(s); | |
3280af22 NIS |
1382 | PL_bufptr = start; |
1383 | PL_expect = XREF; | |
a0d0e21e LW |
1384 | return *s == '(' ? FUNCMETH : METHOD; |
1385 | } | |
1386 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1387 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1388 | len -= 2; | |
1389 | tmpbuf[len] = '\0'; | |
1390 | goto bare_package; | |
1391 | } | |
1392 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1393 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1394 | return 0; |
1395 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1396 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1397 | s = skipspace(s); |
3280af22 | 1398 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1399 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1400 | bare_package: |
3280af22 | 1401 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
c3e0f903 | 1402 | newSVpv(tmpbuf,0)); |
3280af22 NIS |
1403 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1404 | PL_expect = XTERM; | |
a0d0e21e | 1405 | force_next(WORD); |
3280af22 | 1406 | PL_bufptr = s; |
a0d0e21e LW |
1407 | return *s == '(' ? FUNCMETH : METHOD; |
1408 | } | |
1409 | } | |
1410 | return 0; | |
1411 | } | |
1412 | ||
76e3520e | 1413 | STATIC char* |
8ac85365 | 1414 | incl_perldb(void) |
a0d0e21e | 1415 | { |
3280af22 | 1416 | if (PL_perldb) { |
76e3520e | 1417 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1418 | |
1419 | if (pdb) | |
1420 | return pdb; | |
61bb5906 | 1421 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1422 | return "BEGIN { require 'perl5db.pl' }"; |
1423 | } | |
1424 | return ""; | |
1425 | } | |
1426 | ||
1427 | ||
16d20bd9 AD |
1428 | /* Encoded script support. filter_add() effectively inserts a |
1429 | * 'pre-processing' function into the current source input stream. | |
1430 | * Note that the filter function only applies to the current source file | |
1431 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1432 | * | |
1433 | * The datasv parameter (which may be NULL) can be used to pass | |
1434 | * private data to this instance of the filter. The filter function | |
1435 | * can recover the SV using the FILTER_DATA macro and use it to | |
1436 | * store private buffers and state information. | |
1437 | * | |
1438 | * The supplied datasv parameter is upgraded to a PVIO type | |
1439 | * and the IoDIRP field is used to store the function pointer. | |
1440 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1441 | * private use must be set using malloc'd pointers. | |
1442 | */ | |
1443 | static int filter_debug = 0; | |
1444 | ||
1445 | SV * | |
8ac85365 | 1446 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1447 | { |
1448 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
1449 | filter_debug = atoi((char*)datasv); | |
1450 | return NULL; | |
1451 | } | |
3280af22 NIS |
1452 | if (!PL_rsfp_filters) |
1453 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1454 | if (!datasv) |
8c52afec | 1455 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1456 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1457 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1458 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
2d8e6c8d GS |
1459 | if (filter_debug) { |
1460 | STRLEN n_a; | |
1461 | warn("filter_add func %p (%s)", funcp, SvPV(datasv, n_a)); | |
1462 | } | |
3280af22 NIS |
1463 | av_unshift(PL_rsfp_filters, 1); |
1464 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1465 | return(datasv); |
1466 | } | |
1467 | ||
1468 | ||
1469 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1470 | void |
8ac85365 | 1471 | filter_del(filter_t funcp) |
16d20bd9 AD |
1472 | { |
1473 | if (filter_debug) | |
ff0cee69 | 1474 | warn("filter_del func %p", funcp); |
3280af22 | 1475 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1476 | return; |
1477 | /* if filter is on top of stack (usual case) just pop it off */ | |
677ca527 | 1478 | if (IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) == (DIR*)funcp){ |
3280af22 | 1479 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1480 | |
16d20bd9 AD |
1481 | return; |
1482 | } | |
1483 | /* we need to search for the correct entry and clear it */ | |
1484 | die("filter_del can only delete in reverse order (currently)"); | |
1485 | } | |
1486 | ||
1487 | ||
1488 | /* Invoke the n'th filter function for the current rsfp. */ | |
1489 | I32 | |
8ac85365 NIS |
1490 | filter_read(int idx, SV *buf_sv, int maxlen) |
1491 | ||
1492 | ||
1493 | /* 0 = read one text line */ | |
a0d0e21e | 1494 | { |
16d20bd9 AD |
1495 | filter_t funcp; |
1496 | SV *datasv = NULL; | |
e50aee73 | 1497 | |
3280af22 | 1498 | if (!PL_rsfp_filters) |
16d20bd9 | 1499 | return -1; |
3280af22 | 1500 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1501 | /* Provide a default input filter to make life easy. */ |
1502 | /* Note that we append to the line. This is handy. */ | |
16d20bd9 AD |
1503 | if (filter_debug) |
1504 | warn("filter_read %d: from rsfp\n", idx); | |
1505 | if (maxlen) { | |
1506 | /* Want a block */ | |
1507 | int len ; | |
1508 | int old_len = SvCUR(buf_sv) ; | |
1509 | ||
1510 | /* ensure buf_sv is large enough */ | |
1511 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1512 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1513 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1514 | return -1; /* error */ |
1515 | else | |
1516 | return 0 ; /* end of file */ | |
1517 | } | |
16d20bd9 AD |
1518 | SvCUR_set(buf_sv, old_len + len) ; |
1519 | } else { | |
1520 | /* Want a line */ | |
3280af22 NIS |
1521 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1522 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1523 | return -1; /* error */ |
1524 | else | |
1525 | return 0 ; /* end of file */ | |
1526 | } | |
16d20bd9 AD |
1527 | } |
1528 | return SvCUR(buf_sv); | |
1529 | } | |
1530 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1531 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
16d20bd9 AD |
1532 | if (filter_debug) |
1533 | warn("filter_read %d: skipped (filter deleted)\n", idx); | |
1534 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1535 | } | |
1536 | /* Get function pointer hidden within datasv */ | |
1537 | funcp = (filter_t)IoDIRP(datasv); | |
2d8e6c8d GS |
1538 | if (filter_debug) { |
1539 | STRLEN n_a; | |
ff0cee69 | 1540 | warn("filter_read %d: via function %p (%s)\n", |
2d8e6c8d GS |
1541 | idx, funcp, SvPV(datasv,n_a)); |
1542 | } | |
16d20bd9 AD |
1543 | /* Call function. The function is expected to */ |
1544 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1545 | /* Return: <0:error, =0:eof, >0:not eof */ |
1d583055 | 1546 | return (*funcp)(PERL_OBJECT_THIS_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1547 | } |
1548 | ||
76e3520e GS |
1549 | STATIC char * |
1550 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) | |
16d20bd9 | 1551 | { |
a868473f | 1552 | #ifdef WIN32FILTER |
3280af22 | 1553 | if (!PL_rsfp_filters) { |
a868473f NIS |
1554 | filter_add(win32_textfilter,NULL); |
1555 | } | |
1556 | #endif | |
3280af22 | 1557 | if (PL_rsfp_filters) { |
16d20bd9 | 1558 | |
55497cff | 1559 | if (!append) |
1560 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1561 | if (FILTER_READ(0, sv, 0) > 0) |
1562 | return ( SvPVX(sv) ) ; | |
1563 | else | |
1564 | return Nullch ; | |
1565 | } | |
9d116dd7 | 1566 | else |
fd049845 | 1567 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1568 | } |
1569 | ||
1570 | ||
748a9306 LW |
1571 | #ifdef DEBUGGING |
1572 | static char* exp_name[] = | |
a0d0e21e | 1573 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1574 | #endif |
463ee0b2 | 1575 | |
02aa26ce NT |
1576 | /* |
1577 | yylex | |
1578 | ||
1579 | Works out what to call the token just pulled out of the input | |
1580 | stream. The yacc parser takes care of taking the ops we return and | |
1581 | stitching them into a tree. | |
1582 | ||
1583 | Returns: | |
1584 | PRIVATEREF | |
1585 | ||
1586 | Structure: | |
1587 | if read an identifier | |
1588 | if we're in a my declaration | |
1589 | croak if they tried to say my($foo::bar) | |
1590 | build the ops for a my() declaration | |
1591 | if it's an access to a my() variable | |
1592 | are we in a sort block? | |
1593 | croak if my($a); $a <=> $b | |
1594 | build ops for access to a my() variable | |
1595 | if in a dq string, and they've said @foo and we can't find @foo | |
1596 | croak | |
1597 | build ops for a bareword | |
1598 | if we already built the token before, use it. | |
1599 | */ | |
1600 | ||
bee8cd07 | 1601 | int yylex(PERL_YYLEX_PARAM_DECL) |
378cc40b | 1602 | { |
11343788 | 1603 | dTHR; |
79072805 | 1604 | register char *s; |
378cc40b | 1605 | register char *d; |
79072805 | 1606 | register I32 tmp; |
463ee0b2 | 1607 | STRLEN len; |
161b471a NIS |
1608 | GV *gv = Nullgv; |
1609 | GV **gvp = 0; | |
a687059c | 1610 | |
a1a0e61e TD |
1611 | #ifdef USE_PURE_BISON |
1612 | yylval_pointer = lvalp; | |
1613 | yychar_pointer = lcharp; | |
1614 | #endif | |
1615 | ||
02aa26ce | 1616 | /* check if there's an identifier for us to look at */ |
3280af22 | 1617 | if (PL_pending_ident) { |
02aa26ce | 1618 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1619 | char pit = PL_pending_ident; |
1620 | PL_pending_ident = 0; | |
bbce6d69 | 1621 | |
02aa26ce NT |
1622 | /* if we're in a my(), we can't allow dynamics here. |
1623 | $foo'bar has already been turned into $foo::bar, so | |
1624 | just check for colons. | |
1625 | ||
1626 | if it's a legal name, the OP is a PADANY. | |
1627 | */ | |
3280af22 NIS |
1628 | if (PL_in_my) { |
1629 | if (strchr(PL_tokenbuf,':')) | |
22c35a8c | 1630 | croak(PL_no_myglob,PL_tokenbuf); |
02aa26ce | 1631 | |
bbce6d69 | 1632 | yylval.opval = newOP(OP_PADANY, 0); |
3280af22 | 1633 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); |
bbce6d69 | 1634 | return PRIVATEREF; |
1635 | } | |
1636 | ||
02aa26ce NT |
1637 | /* |
1638 | build the ops for accesses to a my() variable. | |
1639 | ||
1640 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1641 | then used in a comparison. This catches most, but not | |
1642 | all cases. For instance, it catches | |
1643 | sort { my($a); $a <=> $b } | |
1644 | but not | |
1645 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1646 | (although why you'd do that is anyone's guess). | |
1647 | */ | |
1648 | ||
3280af22 | 1649 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1650 | #ifdef USE_THREADS |
54b9620d | 1651 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1652 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1653 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1654 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1655 | { |
2faa37cc | 1656 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1657 | yylval.opval->op_targ = tmp; |
1658 | return PRIVATEREF; | |
1659 | } | |
1660 | #endif /* USE_THREADS */ | |
3280af22 | 1661 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
02aa26ce | 1662 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
1663 | if (PL_last_lop_op == OP_SORT && |
1664 | PL_tokenbuf[0] == '$' && | |
1665 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
1666 | && !PL_tokenbuf[2]) | |
bbce6d69 | 1667 | { |
3280af22 NIS |
1668 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
1669 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
1670 | d++) |
1671 | { | |
1672 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1673 | croak("Can't use \"my %s\" in sort comparison", | |
3280af22 | 1674 | PL_tokenbuf); |
a863c7d1 | 1675 | } |
bbce6d69 | 1676 | } |
1677 | } | |
bbce6d69 | 1678 | |
a863c7d1 MB |
1679 | yylval.opval = newOP(OP_PADANY, 0); |
1680 | yylval.opval->op_targ = tmp; | |
1681 | return PRIVATEREF; | |
1682 | } | |
bbce6d69 | 1683 | } |
1684 | ||
02aa26ce NT |
1685 | /* |
1686 | Whine if they've said @foo in a doublequoted string, | |
1687 | and @foo isn't a variable we can find in the symbol | |
1688 | table. | |
1689 | */ | |
3280af22 NIS |
1690 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
1691 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
1692 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
46fc3d4c | 1693 | yyerror(form("In string, %s now must be written as \\%s", |
3280af22 | 1694 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 1695 | } |
1696 | ||
02aa26ce | 1697 | /* build ops for a bareword */ |
3280af22 | 1698 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 1699 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
1700 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
1701 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
1702 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 1703 | : SVt_PVHV)); |
1704 | return WORD; | |
1705 | } | |
1706 | ||
02aa26ce NT |
1707 | /* no identifier pending identification */ |
1708 | ||
3280af22 | 1709 | switch (PL_lex_state) { |
79072805 LW |
1710 | #ifdef COMMENTARY |
1711 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1712 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1713 | break; | |
1714 | #endif | |
1715 | ||
02aa26ce | 1716 | /* when we're already built the next token, just pull it out the queue */ |
79072805 | 1717 | case LEX_KNOWNEXT: |
3280af22 NIS |
1718 | PL_nexttoke--; |
1719 | yylval = PL_nextval[PL_nexttoke]; | |
1720 | if (!PL_nexttoke) { | |
1721 | PL_lex_state = PL_lex_defer; | |
1722 | PL_expect = PL_lex_expect; | |
1723 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 1724 | } |
3280af22 | 1725 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 1726 | |
02aa26ce | 1727 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 1728 | when we get here, PL_bufptr is at the \ |
02aa26ce | 1729 | */ |
79072805 LW |
1730 | case LEX_INTERPCASEMOD: |
1731 | #ifdef DEBUGGING | |
3280af22 | 1732 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
463ee0b2 | 1733 | croak("panic: INTERPCASEMOD"); |
79072805 | 1734 | #endif |
02aa26ce | 1735 | /* handle \E or end of string */ |
3280af22 | 1736 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 1737 | char oldmod; |
02aa26ce NT |
1738 | |
1739 | /* if at a \E */ | |
3280af22 NIS |
1740 | if (PL_lex_casemods) { |
1741 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
1742 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 1743 | |
3280af22 NIS |
1744 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
1745 | PL_bufptr += 2; | |
1746 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 1747 | } |
79072805 LW |
1748 | return ')'; |
1749 | } | |
3280af22 NIS |
1750 | if (PL_bufptr != PL_bufend) |
1751 | PL_bufptr += 2; | |
1752 | PL_lex_state = LEX_INTERPCONCAT; | |
e4bfbdd4 | 1753 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1754 | } |
1755 | else { | |
3280af22 | 1756 | s = PL_bufptr + 1; |
79072805 LW |
1757 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
1758 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 1759 | if (strchr("LU", *s) && |
3280af22 | 1760 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 1761 | { |
3280af22 | 1762 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
1763 | return ')'; |
1764 | } | |
3280af22 NIS |
1765 | if (PL_lex_casemods > 10) { |
1766 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
1767 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 1768 | SAVEFREEPV(newlb); |
3280af22 | 1769 | PL_lex_casestack = newlb; |
a0d0e21e LW |
1770 | } |
1771 | } | |
3280af22 NIS |
1772 | PL_lex_casestack[PL_lex_casemods++] = *s; |
1773 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
1774 | PL_lex_state = LEX_INTERPCONCAT; | |
1775 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
1776 | force_next('('); |
1777 | if (*s == 'l') | |
3280af22 | 1778 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 1779 | else if (*s == 'u') |
3280af22 | 1780 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 1781 | else if (*s == 'L') |
3280af22 | 1782 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 1783 | else if (*s == 'U') |
3280af22 | 1784 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 1785 | else if (*s == 'Q') |
3280af22 | 1786 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 1787 | else |
463ee0b2 | 1788 | croak("panic: yylex"); |
3280af22 | 1789 | PL_bufptr = s + 1; |
79072805 | 1790 | force_next(FUNC); |
3280af22 NIS |
1791 | if (PL_lex_starts) { |
1792 | s = PL_bufptr; | |
1793 | PL_lex_starts = 0; | |
79072805 LW |
1794 | Aop(OP_CONCAT); |
1795 | } | |
1796 | else | |
e4bfbdd4 | 1797 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1798 | } |
1799 | ||
55497cff | 1800 | case LEX_INTERPPUSH: |
1801 | return sublex_push(); | |
1802 | ||
79072805 | 1803 | case LEX_INTERPSTART: |
3280af22 | 1804 | if (PL_bufptr == PL_bufend) |
79072805 | 1805 | return sublex_done(); |
3280af22 NIS |
1806 | PL_expect = XTERM; |
1807 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
1808 | PL_lex_state = LEX_INTERPNORMAL; | |
1809 | if (PL_lex_dojoin) { | |
1810 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 1811 | force_next(','); |
554b3eca | 1812 | #ifdef USE_THREADS |
533c011a NIS |
1813 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
1814 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
1815 | force_next(PRIVATEREF); |
1816 | #else | |
a0d0e21e | 1817 | force_ident("\"", '$'); |
554b3eca | 1818 | #endif /* USE_THREADS */ |
3280af22 | 1819 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1820 | force_next('$'); |
3280af22 | 1821 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1822 | force_next('('); |
3280af22 | 1823 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
1824 | force_next(FUNC); |
1825 | } | |
3280af22 NIS |
1826 | if (PL_lex_starts++) { |
1827 | s = PL_bufptr; | |
79072805 LW |
1828 | Aop(OP_CONCAT); |
1829 | } | |
e4bfbdd4 | 1830 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1831 | |
1832 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
1833 | if (intuit_more(PL_bufptr)) { |
1834 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
1835 | break; |
1836 | } | |
1837 | /* FALL THROUGH */ | |
1838 | ||
1839 | case LEX_INTERPEND: | |
3280af22 NIS |
1840 | if (PL_lex_dojoin) { |
1841 | PL_lex_dojoin = FALSE; | |
1842 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1843 | return ')'; |
1844 | } | |
1845 | /* FALLTHROUGH */ | |
1846 | case LEX_INTERPCONCAT: | |
1847 | #ifdef DEBUGGING | |
3280af22 | 1848 | if (PL_lex_brackets) |
463ee0b2 | 1849 | croak("panic: INTERPCONCAT"); |
79072805 | 1850 | #endif |
3280af22 | 1851 | if (PL_bufptr == PL_bufend) |
79072805 LW |
1852 | return sublex_done(); |
1853 | ||
3280af22 NIS |
1854 | if (SvIVX(PL_linestr) == '\'') { |
1855 | SV *sv = newSVsv(PL_linestr); | |
1856 | if (!PL_lex_inpat) | |
76e3520e | 1857 | sv = tokeq(sv); |
3280af22 | 1858 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 1859 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 1860 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 1861 | s = PL_bufend; |
79072805 LW |
1862 | } |
1863 | else { | |
3280af22 | 1864 | s = scan_const(PL_bufptr); |
79072805 | 1865 | if (*s == '\\') |
3280af22 | 1866 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 1867 | else |
3280af22 | 1868 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
1869 | } |
1870 | ||
3280af22 NIS |
1871 | if (s != PL_bufptr) { |
1872 | PL_nextval[PL_nexttoke] = yylval; | |
1873 | PL_expect = XTERM; | |
79072805 | 1874 | force_next(THING); |
3280af22 | 1875 | if (PL_lex_starts++) |
79072805 LW |
1876 | Aop(OP_CONCAT); |
1877 | else { | |
3280af22 | 1878 | PL_bufptr = s; |
e4bfbdd4 | 1879 | return yylex(PERL_YYLEX_PARAM); |
79072805 LW |
1880 | } |
1881 | } | |
1882 | ||
e4bfbdd4 | 1883 | return yylex(PERL_YYLEX_PARAM); |
a0d0e21e | 1884 | case LEX_FORMLINE: |
3280af22 NIS |
1885 | PL_lex_state = LEX_NORMAL; |
1886 | s = scan_formline(PL_bufptr); | |
1887 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
1888 | goto rightbracket; |
1889 | OPERATOR(';'); | |
79072805 LW |
1890 | } |
1891 | ||
3280af22 NIS |
1892 | s = PL_bufptr; |
1893 | PL_oldoldbufptr = PL_oldbufptr; | |
1894 | PL_oldbufptr = s; | |
79072805 | 1895 | DEBUG_p( { |
3280af22 | 1896 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[PL_expect], s); |
79072805 | 1897 | } ) |
463ee0b2 LW |
1898 | |
1899 | retry: | |
378cc40b LW |
1900 | switch (*s) { |
1901 | default: | |
834a4ddd LW |
1902 | if (isIDFIRST_lazy(s)) |
1903 | goto keylookup; | |
a0ed51b3 | 1904 | croak("Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
1905 | case 4: |
1906 | case 26: | |
1907 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1908 | case 0: |
3280af22 NIS |
1909 | if (!PL_rsfp) { |
1910 | PL_last_uni = 0; | |
1911 | PL_last_lop = 0; | |
1912 | if (PL_lex_brackets) | |
463ee0b2 | 1913 | yyerror("Missing right bracket"); |
79072805 | 1914 | TOKEN(0); |
463ee0b2 | 1915 | } |
3280af22 | 1916 | if (s++ < PL_bufend) |
a687059c | 1917 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
1918 | PL_last_uni = 0; |
1919 | PL_last_lop = 0; | |
1920 | if (!PL_in_eval && !PL_preambled) { | |
1921 | PL_preambled = TRUE; | |
1922 | sv_setpv(PL_linestr,incl_perldb()); | |
1923 | if (SvCUR(PL_linestr)) | |
1924 | sv_catpv(PL_linestr,";"); | |
1925 | if (PL_preambleav){ | |
1926 | while(AvFILLp(PL_preambleav) >= 0) { | |
1927 | SV *tmpsv = av_shift(PL_preambleav); | |
1928 | sv_catsv(PL_linestr, tmpsv); | |
1929 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 1930 | sv_free(tmpsv); |
1931 | } | |
3280af22 NIS |
1932 | sv_free((SV*)PL_preambleav); |
1933 | PL_preambleav = NULL; | |
91b7def8 | 1934 | } |
3280af22 NIS |
1935 | if (PL_minus_n || PL_minus_p) { |
1936 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
1937 | if (PL_minus_l) | |
1938 | sv_catpv(PL_linestr,"chomp;"); | |
1939 | if (PL_minus_a) { | |
8fd239a7 CS |
1940 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
1941 | if (gv) | |
1942 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
1943 | if (PL_minus_F) { |
1944 | if (strchr("/'\"", *PL_splitstr) | |
1945 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
1946 | sv_catpvf(PL_linestr, "@F=split(%s);", PL_splitstr); | |
54310121 | 1947 | else { |
1948 | char delim; | |
1949 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 1950 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 1951 | delim = *s; |
3280af22 | 1952 | sv_catpvf(PL_linestr, "@F=split(%s%c", |
46fc3d4c | 1953 | "q" + (delim == '\''), delim); |
3280af22 | 1954 | for (s = PL_splitstr; *s; s++) { |
54310121 | 1955 | if (*s == '\\') |
3280af22 NIS |
1956 | sv_catpvn(PL_linestr, "\\", 1); |
1957 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 1958 | } |
3280af22 | 1959 | sv_catpvf(PL_linestr, "%c);", delim); |
54310121 | 1960 | } |
2304df62 AD |
1961 | } |
1962 | else | |
3280af22 | 1963 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 1964 | } |
79072805 | 1965 | } |
3280af22 NIS |
1966 | sv_catpv(PL_linestr, "\n"); |
1967 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1968 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1969 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
1970 | SV *sv = NEWSV(85,0); |
1971 | ||
1972 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
1973 | sv_setsv(sv,PL_linestr); |
1974 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a0d0e21e | 1975 | } |
79072805 | 1976 | goto retry; |
a687059c | 1977 | } |
e929a76b | 1978 | do { |
3280af22 | 1979 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 1980 | fake_eof: |
3280af22 NIS |
1981 | if (PL_rsfp) { |
1982 | if (PL_preprocess && !PL_in_eval) | |
1983 | (void)PerlProc_pclose(PL_rsfp); | |
1984 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
1985 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 1986 | else |
3280af22 NIS |
1987 | (void)PerlIO_close(PL_rsfp); |
1988 | PL_rsfp = Nullfp; | |
4a9ae47a | 1989 | PL_doextract = FALSE; |
395c3793 | 1990 | } |
3280af22 NIS |
1991 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
1992 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
1993 | sv_catpv(PL_linestr,";}"); | |
1994 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1995 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1996 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
1997 | goto retry; |
1998 | } | |
3280af22 NIS |
1999 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2000 | sv_setpv(PL_linestr,""); | |
79072805 | 2001 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2002 | } |
3280af22 | 2003 | if (PL_doextract) { |
a0d0e21e | 2004 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2005 | PL_doextract = FALSE; |
a0d0e21e LW |
2006 | |
2007 | /* Incest with pod. */ | |
2008 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2009 | sv_setpv(PL_linestr, ""); |
2010 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2011 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2012 | PL_doextract = FALSE; | |
a0d0e21e LW |
2013 | } |
2014 | } | |
463ee0b2 | 2015 | incline(s); |
3280af22 NIS |
2016 | } while (PL_doextract); |
2017 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2018 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2019 | SV *sv = NEWSV(85,0); |
a687059c | 2020 | |
93a17b20 | 2021 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
2022 | sv_setsv(sv,PL_linestr); |
2023 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a687059c | 2024 | } |
3280af22 NIS |
2025 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
2026 | if (PL_curcop->cop_line == 1) { | |
2027 | while (s < PL_bufend && isSPACE(*s)) | |
79072805 | 2028 | s++; |
a0d0e21e | 2029 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2030 | s++; |
44a8e56a | 2031 | d = Nullch; |
3280af22 | 2032 | if (!PL_in_eval) { |
44a8e56a | 2033 | if (*s == '#' && *(s+1) == '!') |
2034 | d = s + 2; | |
2035 | #ifdef ALTERNATE_SHEBANG | |
2036 | else { | |
2037 | static char as[] = ALTERNATE_SHEBANG; | |
2038 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2039 | d = s + (sizeof(as) - 1); | |
2040 | } | |
2041 | #endif /* ALTERNATE_SHEBANG */ | |
2042 | } | |
2043 | if (d) { | |
b8378b72 | 2044 | char *ipath; |
774d564b | 2045 | char *ipathend; |
b8378b72 | 2046 | |
774d564b | 2047 | while (isSPACE(*d)) |
b8378b72 CS |
2048 | d++; |
2049 | ipath = d; | |
774d564b | 2050 | while (*d && !isSPACE(*d)) |
2051 | d++; | |
2052 | ipathend = d; | |
2053 | ||
2054 | #ifdef ARG_ZERO_IS_SCRIPT | |
2055 | if (ipathend > ipath) { | |
2056 | /* | |
2057 | * HP-UX (at least) sets argv[0] to the script name, | |
2058 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2059 | * at least, set argv[0] to the basename of the Perl | |
2060 | * interpreter. So, having found "#!", we'll set it right. | |
2061 | */ | |
2062 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2063 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
6b88bc9c | 2064 | if (sv_eq(x, GvSV(PL_curcop->cop_filegv))) { |
774d564b | 2065 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2066 | SvSETMAGIC(x); |
2067 | } | |
774d564b | 2068 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2069 | } |
774d564b | 2070 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2071 | |
2072 | /* | |
2073 | * Look for options. | |
2074 | */ | |
748a9306 LW |
2075 | d = instr(s,"perl -"); |
2076 | if (!d) | |
2077 | d = instr(s,"perl"); | |
44a8e56a | 2078 | #ifdef ALTERNATE_SHEBANG |
2079 | /* | |
2080 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2081 | * character that can be part of a Perl expression, then if | |
2082 | * we see it but not "perl", we're probably looking at the | |
2083 | * start of Perl code, not a request to hand off to some | |
2084 | * other interpreter. Similarly, if "perl" is there, but | |
2085 | * not in the first 'word' of the line, we assume the line | |
2086 | * contains the start of the Perl program. | |
44a8e56a | 2087 | */ |
2088 | if (d && *s != '#') { | |
774d564b | 2089 | char *c = ipath; |
44a8e56a | 2090 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2091 | c++; | |
2092 | if (c < d) | |
2093 | d = Nullch; /* "perl" not in first word; ignore */ | |
2094 | else | |
2095 | *s = '#'; /* Don't try to parse shebang line */ | |
2096 | } | |
774d564b | 2097 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2098 | if (!d && |
44a8e56a | 2099 | *s == '#' && |
774d564b | 2100 | ipathend > ipath && |
3280af22 | 2101 | !PL_minus_c && |
748a9306 | 2102 | !instr(s,"indir") && |
3280af22 | 2103 | instr(PL_origargv[0],"perl")) |
748a9306 | 2104 | { |
9f68db38 | 2105 | char **newargv; |
9f68db38 | 2106 | |
774d564b | 2107 | *ipathend = '\0'; |
2108 | s = ipathend + 1; | |
3280af22 | 2109 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2110 | s++; |
3280af22 NIS |
2111 | if (s < PL_bufend) { |
2112 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2113 | newargv[1] = s; |
3280af22 | 2114 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2115 | s++; |
2116 | *s = '\0'; | |
3280af22 | 2117 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2118 | } |
2119 | else | |
3280af22 | 2120 | newargv = PL_origargv; |
774d564b | 2121 | newargv[0] = ipath; |
2122 | execv(ipath, newargv); | |
2123 | croak("Can't exec %s", ipath); | |
9f68db38 | 2124 | } |
748a9306 | 2125 | if (d) { |
3280af22 NIS |
2126 | U32 oldpdb = PL_perldb; |
2127 | bool oldn = PL_minus_n; | |
2128 | bool oldp = PL_minus_p; | |
748a9306 LW |
2129 | |
2130 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2131 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2132 | |
2133 | if (*d++ == '-') { | |
8cc95fdb | 2134 | do { |
2135 | if (*d == 'M' || *d == 'm') { | |
2136 | char *m = d; | |
2137 | while (*d && !isSPACE(*d)) d++; | |
2138 | croak("Too late for \"-%.*s\" option", | |
2139 | (int)(d - m), m); | |
2140 | } | |
2141 | d = moreswitches(d); | |
2142 | } while (d); | |
84902520 | 2143 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2144 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2145 | /* if we have already added "LINE: while (<>) {", |
2146 | we must not do it again */ | |
748a9306 | 2147 | { |
3280af22 NIS |
2148 | sv_setpv(PL_linestr, ""); |
2149 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2150 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2151 | PL_preambled = FALSE; | |
84902520 | 2152 | if (PERLDB_LINE) |
3280af22 | 2153 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2154 | goto retry; |
2155 | } | |
a0d0e21e | 2156 | } |
79072805 | 2157 | } |
9f68db38 | 2158 | } |
79072805 | 2159 | } |
3280af22 NIS |
2160 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2161 | PL_bufptr = s; | |
2162 | PL_lex_state = LEX_FORMLINE; | |
e4bfbdd4 | 2163 | return yylex(PERL_YYLEX_PARAM); |
ae986130 | 2164 | } |
378cc40b | 2165 | goto retry; |
4fdae800 | 2166 | case '\r': |
6a27c188 | 2167 | #ifdef PERL_STRICT_CR |
54310121 | 2168 | warn("Illegal character \\%03o (carriage return)", '\r'); |
2169 | croak( | |
2170 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 2171 | #endif |
4fdae800 | 2172 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2173 | s++; |
2174 | goto retry; | |
378cc40b | 2175 | case '#': |
e929a76b | 2176 | case '\n': |
3280af22 NIS |
2177 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2178 | d = PL_bufend; | |
a687059c | 2179 | while (s < d && *s != '\n') |
378cc40b | 2180 | s++; |
0f85fab0 | 2181 | if (s < d) |
378cc40b | 2182 | s++; |
463ee0b2 | 2183 | incline(s); |
3280af22 NIS |
2184 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2185 | PL_bufptr = s; | |
2186 | PL_lex_state = LEX_FORMLINE; | |
e4bfbdd4 | 2187 | return yylex(PERL_YYLEX_PARAM); |
a687059c | 2188 | } |
378cc40b | 2189 | } |
a687059c | 2190 | else { |
378cc40b | 2191 | *s = '\0'; |
3280af22 | 2192 | PL_bufend = s; |
a687059c | 2193 | } |
378cc40b LW |
2194 | goto retry; |
2195 | case '-': | |
79072805 | 2196 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2197 | s++; |
3280af22 | 2198 | PL_bufptr = s; |
748a9306 LW |
2199 | tmp = *s++; |
2200 | ||
3280af22 | 2201 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2202 | s++; |
2203 | ||
2204 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2205 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2206 | OPERATOR('-'); /* unary minus */ |
2207 | } | |
3280af22 NIS |
2208 | PL_last_uni = PL_oldbufptr; |
2209 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2210 | switch (tmp) { |
79072805 LW |
2211 | case 'r': FTST(OP_FTEREAD); |
2212 | case 'w': FTST(OP_FTEWRITE); | |
2213 | case 'x': FTST(OP_FTEEXEC); | |
2214 | case 'o': FTST(OP_FTEOWNED); | |
2215 | case 'R': FTST(OP_FTRREAD); | |
2216 | case 'W': FTST(OP_FTRWRITE); | |
2217 | case 'X': FTST(OP_FTREXEC); | |
2218 | case 'O': FTST(OP_FTROWNED); | |
2219 | case 'e': FTST(OP_FTIS); | |
2220 | case 'z': FTST(OP_FTZERO); | |
2221 | case 's': FTST(OP_FTSIZE); | |
2222 | case 'f': FTST(OP_FTFILE); | |
2223 | case 'd': FTST(OP_FTDIR); | |
2224 | case 'l': FTST(OP_FTLINK); | |
2225 | case 'p': FTST(OP_FTPIPE); | |
2226 | case 'S': FTST(OP_FTSOCK); | |
2227 | case 'u': FTST(OP_FTSUID); | |
2228 | case 'g': FTST(OP_FTSGID); | |
2229 | case 'k': FTST(OP_FTSVTX); | |
2230 | case 'b': FTST(OP_FTBLK); | |
2231 | case 'c': FTST(OP_FTCHR); | |
2232 | case 't': FTST(OP_FTTTY); | |
2233 | case 'T': FTST(OP_FTTEXT); | |
2234 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2235 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2236 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2237 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2238 | default: |
ff0cee69 | 2239 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2240 | break; |
2241 | } | |
2242 | } | |
a687059c LW |
2243 | tmp = *s++; |
2244 | if (*s == tmp) { | |
2245 | s++; | |
3280af22 | 2246 | if (PL_expect == XOPERATOR) |
79072805 LW |
2247 | TERM(POSTDEC); |
2248 | else | |
2249 | OPERATOR(PREDEC); | |
2250 | } | |
2251 | else if (*s == '>') { | |
2252 | s++; | |
2253 | s = skipspace(s); | |
834a4ddd | 2254 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2255 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2256 | TOKEN(ARROW); |
79072805 | 2257 | } |
748a9306 LW |
2258 | else if (*s == '$') |
2259 | OPERATOR(ARROW); | |
463ee0b2 | 2260 | else |
748a9306 | 2261 | TERM(ARROW); |
a687059c | 2262 | } |
3280af22 | 2263 | if (PL_expect == XOPERATOR) |
79072805 LW |
2264 | Aop(OP_SUBTRACT); |
2265 | else { | |
3280af22 | 2266 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2267 | check_uni(); |
79072805 | 2268 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2269 | } |
79072805 | 2270 | |
378cc40b | 2271 | case '+': |
a687059c LW |
2272 | tmp = *s++; |
2273 | if (*s == tmp) { | |
378cc40b | 2274 | s++; |
3280af22 | 2275 | if (PL_expect == XOPERATOR) |
79072805 LW |
2276 | TERM(POSTINC); |
2277 | else | |
2278 | OPERATOR(PREINC); | |
378cc40b | 2279 | } |
3280af22 | 2280 | if (PL_expect == XOPERATOR) |
79072805 LW |
2281 | Aop(OP_ADD); |
2282 | else { | |
3280af22 | 2283 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2284 | check_uni(); |
a687059c | 2285 | OPERATOR('+'); |
2f3197b3 | 2286 | } |
a687059c | 2287 | |
378cc40b | 2288 | case '*': |
3280af22 NIS |
2289 | if (PL_expect != XOPERATOR) { |
2290 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2291 | PL_expect = XOPERATOR; | |
2292 | force_ident(PL_tokenbuf, '*'); | |
2293 | if (!*PL_tokenbuf) | |
a0d0e21e | 2294 | PREREF('*'); |
79072805 | 2295 | TERM('*'); |
a687059c | 2296 | } |
79072805 LW |
2297 | s++; |
2298 | if (*s == '*') { | |
a687059c | 2299 | s++; |
79072805 | 2300 | PWop(OP_POW); |
a687059c | 2301 | } |
79072805 LW |
2302 | Mop(OP_MULTIPLY); |
2303 | ||
378cc40b | 2304 | case '%': |
3280af22 | 2305 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2306 | ++s; |
2307 | Mop(OP_MODULO); | |
a687059c | 2308 | } |
3280af22 NIS |
2309 | PL_tokenbuf[0] = '%'; |
2310 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2311 | if (!PL_tokenbuf[1]) { | |
2312 | if (s == PL_bufend) | |
bbce6d69 | 2313 | yyerror("Final % should be \\% or %name"); |
2314 | PREREF('%'); | |
a687059c | 2315 | } |
3280af22 | 2316 | PL_pending_ident = '%'; |
bbce6d69 | 2317 | TERM('%'); |
a687059c | 2318 | |
378cc40b | 2319 | case '^': |
79072805 | 2320 | s++; |
a0d0e21e | 2321 | BOop(OP_BIT_XOR); |
79072805 | 2322 | case '[': |
3280af22 | 2323 | PL_lex_brackets++; |
79072805 | 2324 | /* FALL THROUGH */ |
378cc40b | 2325 | case '~': |
378cc40b | 2326 | case ',': |
378cc40b LW |
2327 | tmp = *s++; |
2328 | OPERATOR(tmp); | |
a0d0e21e LW |
2329 | case ':': |
2330 | if (s[1] == ':') { | |
2331 | len = 0; | |
2332 | goto just_a_word; | |
2333 | } | |
2334 | s++; | |
2335 | OPERATOR(':'); | |
8990e307 LW |
2336 | case '(': |
2337 | s++; | |
3280af22 NIS |
2338 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2339 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2340 | else |
3280af22 | 2341 | PL_expect = XTERM; |
a0d0e21e | 2342 | TOKEN('('); |
378cc40b | 2343 | case ';': |
3280af22 NIS |
2344 | if (PL_curcop->cop_line < PL_copline) |
2345 | PL_copline = PL_curcop->cop_line; | |
378cc40b LW |
2346 | tmp = *s++; |
2347 | OPERATOR(tmp); | |
2348 | case ')': | |
378cc40b | 2349 | tmp = *s++; |
16d20bd9 AD |
2350 | s = skipspace(s); |
2351 | if (*s == '{') | |
2352 | PREBLOCK(tmp); | |
378cc40b | 2353 | TERM(tmp); |
79072805 LW |
2354 | case ']': |
2355 | s++; | |
3280af22 | 2356 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2357 | yyerror("Unmatched right bracket"); |
2358 | else | |
3280af22 NIS |
2359 | --PL_lex_brackets; |
2360 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2361 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2362 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2363 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2364 | } |
2365 | } | |
4633a7c4 | 2366 | TERM(']'); |
79072805 LW |
2367 | case '{': |
2368 | leftbracket: | |
79072805 | 2369 | s++; |
3280af22 NIS |
2370 | if (PL_lex_brackets > 100) { |
2371 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2372 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2373 | SAVEFREEPV(newlb); |
3280af22 | 2374 | PL_lex_brackstack = newlb; |
8990e307 LW |
2375 | } |
2376 | } | |
3280af22 | 2377 | switch (PL_expect) { |
a0d0e21e | 2378 | case XTERM: |
3280af22 | 2379 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2380 | s--; |
2381 | PRETERMBLOCK(DO); | |
2382 | } | |
3280af22 NIS |
2383 | if (PL_oldoldbufptr == PL_last_lop) |
2384 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2385 | else |
3280af22 | 2386 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2387 | OPERATOR(HASHBRACK); |
a0d0e21e | 2388 | case XOPERATOR: |
3280af22 | 2389 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2390 | s++; |
44a8e56a | 2391 | d = s; |
3280af22 NIS |
2392 | PL_tokenbuf[0] = '\0'; |
2393 | if (d < PL_bufend && *d == '-') { | |
2394 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2395 | d++; |
3280af22 | 2396 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2397 | d++; |
2398 | } | |
834a4ddd | 2399 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2400 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2401 | FALSE, &len); |
3280af22 | 2402 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2403 | d++; |
2404 | if (*d == '}') { | |
3280af22 | 2405 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2406 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2407 | if (minus) | |
2408 | force_next('-'); | |
748a9306 LW |
2409 | } |
2410 | } | |
2411 | /* FALL THROUGH */ | |
2412 | case XBLOCK: | |
3280af22 NIS |
2413 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2414 | PL_expect = XSTATE; | |
a0d0e21e LW |
2415 | break; |
2416 | case XTERMBLOCK: | |
3280af22 NIS |
2417 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2418 | PL_expect = XSTATE; | |
a0d0e21e LW |
2419 | break; |
2420 | default: { | |
2421 | char *t; | |
3280af22 NIS |
2422 | if (PL_oldoldbufptr == PL_last_lop) |
2423 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2424 | else |
3280af22 | 2425 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2426 | s = skipspace(s); |
09ecc4b6 | 2427 | if (*s == '}') |
a0d0e21e | 2428 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2429 | /* This hack serves to disambiguate a pair of curlies |
2430 | * as being a block or an anon hash. Normally, expectation | |
2431 | * determines that, but in cases where we're not in a | |
2432 | * position to expect anything in particular (like inside | |
2433 | * eval"") we have to resolve the ambiguity. This code | |
2434 | * covers the case where the first term in the curlies is a | |
2435 | * quoted string. Most other cases need to be explicitly | |
2436 | * disambiguated by prepending a `+' before the opening | |
2437 | * curly in order to force resolution as an anon hash. | |
2438 | * | |
2439 | * XXX should probably propagate the outer expectation | |
2440 | * into eval"" to rely less on this hack, but that could | |
2441 | * potentially break current behavior of eval"". | |
2442 | * GSAR 97-07-21 | |
2443 | */ | |
2444 | t = s; | |
2445 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2446 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2447 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2448 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2449 | t++; | |
2450 | t++; | |
a0d0e21e | 2451 | } |
b8a4b1be | 2452 | else if (*s == 'q') { |
3280af22 | 2453 | if (++t < PL_bufend |
b8a4b1be | 2454 | && (!isALNUM(*t) |
3280af22 | 2455 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2456 | && !isALNUM(*t)))) { |
2457 | char *tmps; | |
2458 | char open, close, term; | |
2459 | I32 brackets = 1; | |
2460 | ||
3280af22 | 2461 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2462 | t++; |
2463 | term = *t; | |
2464 | open = term; | |
2465 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2466 | term = tmps[5]; | |
2467 | close = term; | |
2468 | if (open == close) | |
3280af22 NIS |
2469 | for (t++; t < PL_bufend; t++) { |
2470 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2471 | t++; |
6d07e5e9 | 2472 | else if (*t == open) |
b8a4b1be GS |
2473 | break; |
2474 | } | |
2475 | else | |
3280af22 NIS |
2476 | for (t++; t < PL_bufend; t++) { |
2477 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2478 | t++; |
6d07e5e9 | 2479 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2480 | break; |
2481 | else if (*t == open) | |
2482 | brackets++; | |
2483 | } | |
2484 | } | |
2485 | t++; | |
a0d0e21e | 2486 | } |
834a4ddd LW |
2487 | else if (isIDFIRST_lazy(s)) { |
2488 | for (t++; t < PL_bufend && isALNUM_lazy(t); t++) ; | |
a0d0e21e | 2489 | } |
3280af22 | 2490 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2491 | t++; |
b8a4b1be GS |
2492 | /* if comma follows first term, call it an anon hash */ |
2493 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2494 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2495 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2496 | OPERATOR(HASHBRACK); |
3280af22 | 2497 | if (PL_expect == XREF) |
834a4ddd | 2498 | PL_expect = XSTATE; /* was XTERM, trying XSTATE */ |
a0d0e21e | 2499 | else { |
3280af22 NIS |
2500 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2501 | PL_expect = XSTATE; | |
a0d0e21e | 2502 | } |
8990e307 | 2503 | } |
a0d0e21e | 2504 | break; |
463ee0b2 | 2505 | } |
3280af22 | 2506 | yylval.ival = PL_curcop->cop_line; |
79072805 | 2507 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2508 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2509 | TOKEN('{'); |
378cc40b | 2510 | case '}': |
79072805 LW |
2511 | rightbracket: |
2512 | s++; | |
3280af22 | 2513 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2514 | yyerror("Unmatched right bracket"); |
2515 | else | |
3280af22 NIS |
2516 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2517 | if (PL_lex_brackets < PL_lex_formbrack) | |
2518 | PL_lex_formbrack = 0; | |
2519 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2520 | if (PL_lex_brackets == 0) { | |
2521 | if (PL_lex_fakebrack) { | |
2522 | PL_lex_state = LEX_INTERPEND; | |
2523 | PL_bufptr = s; | |
e4bfbdd4 | 2524 | return yylex(PERL_YYLEX_PARAM); /* ignore fake brackets */ |
79072805 | 2525 | } |
fa83b5b6 | 2526 | if (*s == '-' && s[1] == '>') |
3280af22 | 2527 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2528 | else if (*s != '[' && *s != '{') |
3280af22 | 2529 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2530 | } |
2531 | } | |
3280af22 NIS |
2532 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2533 | PL_bufptr = s; | |
2534 | PL_lex_fakebrack = 0; | |
e4bfbdd4 | 2535 | return yylex(PERL_YYLEX_PARAM); /* ignore fake brackets */ |
748a9306 | 2536 | } |
79072805 LW |
2537 | force_next('}'); |
2538 | TOKEN(';'); | |
378cc40b LW |
2539 | case '&': |
2540 | s++; | |
2541 | tmp = *s++; | |
2542 | if (tmp == '&') | |
a0d0e21e | 2543 | AOPERATOR(ANDAND); |
378cc40b | 2544 | s--; |
3280af22 | 2545 | if (PL_expect == XOPERATOR) { |
834a4ddd | 2546 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
3280af22 | 2547 | PL_curcop->cop_line--; |
22c35a8c | 2548 | warner(WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 2549 | PL_curcop->cop_line++; |
463ee0b2 | 2550 | } |
79072805 | 2551 | BAop(OP_BIT_AND); |
463ee0b2 | 2552 | } |
79072805 | 2553 | |
3280af22 NIS |
2554 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
2555 | if (*PL_tokenbuf) { | |
2556 | PL_expect = XOPERATOR; | |
2557 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 2558 | } |
79072805 LW |
2559 | else |
2560 | PREREF('&'); | |
c07a80fd | 2561 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2562 | TERM('&'); |
2563 | ||
378cc40b LW |
2564 | case '|': |
2565 | s++; | |
2566 | tmp = *s++; | |
2567 | if (tmp == '|') | |
a0d0e21e | 2568 | AOPERATOR(OROR); |
378cc40b | 2569 | s--; |
79072805 | 2570 | BOop(OP_BIT_OR); |
378cc40b LW |
2571 | case '=': |
2572 | s++; | |
2573 | tmp = *s++; | |
2574 | if (tmp == '=') | |
79072805 LW |
2575 | Eop(OP_EQ); |
2576 | if (tmp == '>') | |
2577 | OPERATOR(','); | |
378cc40b | 2578 | if (tmp == '~') |
79072805 | 2579 | PMop(OP_MATCH); |
599cee73 PM |
2580 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
2581 | warner(WARN_SYNTAX, "Reversed %c= operator",(int)tmp); | |
378cc40b | 2582 | s--; |
3280af22 NIS |
2583 | if (PL_expect == XSTATE && isALPHA(tmp) && |
2584 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 2585 | { |
3280af22 NIS |
2586 | if (PL_in_eval && !PL_rsfp) { |
2587 | d = PL_bufend; | |
a5f75d66 AD |
2588 | while (s < d) { |
2589 | if (*s++ == '\n') { | |
2590 | incline(s); | |
2591 | if (strnEQ(s,"=cut",4)) { | |
2592 | s = strchr(s,'\n'); | |
2593 | if (s) | |
2594 | s++; | |
2595 | else | |
2596 | s = d; | |
2597 | incline(s); | |
2598 | goto retry; | |
2599 | } | |
2600 | } | |
2601 | } | |
2602 | goto retry; | |
2603 | } | |
3280af22 NIS |
2604 | s = PL_bufend; |
2605 | PL_doextract = TRUE; | |
a0d0e21e LW |
2606 | goto retry; |
2607 | } | |
3280af22 | 2608 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 2609 | char *t; |
51882d45 | 2610 | #ifdef PERL_STRICT_CR |
a0d0e21e | 2611 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
2612 | #else |
2613 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
2614 | #endif | |
a0d0e21e LW |
2615 | if (*t == '\n' || *t == '#') { |
2616 | s--; | |
3280af22 | 2617 | PL_expect = XBLOCK; |
a0d0e21e LW |
2618 | goto leftbracket; |
2619 | } | |
79072805 | 2620 | } |
a0d0e21e LW |
2621 | yylval.ival = 0; |
2622 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2623 | case '!': |
2624 | s++; | |
2625 | tmp = *s++; | |
2626 | if (tmp == '=') | |
79072805 | 2627 | Eop(OP_NE); |
378cc40b | 2628 | if (tmp == '~') |
79072805 | 2629 | PMop(OP_NOT); |
378cc40b LW |
2630 | s--; |
2631 | OPERATOR('!'); | |
2632 | case '<': | |
3280af22 | 2633 | if (PL_expect != XOPERATOR) { |
93a17b20 | 2634 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2635 | check_uni(); |
79072805 LW |
2636 | if (s[1] == '<') |
2637 | s = scan_heredoc(s); | |
2638 | else | |
2639 | s = scan_inputsymbol(s); | |
2640 | TERM(sublex_start()); | |
378cc40b LW |
2641 | } |
2642 | s++; | |
2643 | tmp = *s++; | |
2644 | if (tmp == '<') | |
79072805 | 2645 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2646 | if (tmp == '=') { |
2647 | tmp = *s++; | |
2648 | if (tmp == '>') | |
79072805 | 2649 | Eop(OP_NCMP); |
395c3793 | 2650 | s--; |
79072805 | 2651 | Rop(OP_LE); |
395c3793 | 2652 | } |
378cc40b | 2653 | s--; |
79072805 | 2654 | Rop(OP_LT); |
378cc40b LW |
2655 | case '>': |
2656 | s++; | |
2657 | tmp = *s++; | |
2658 | if (tmp == '>') | |
79072805 | 2659 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2660 | if (tmp == '=') |
79072805 | 2661 | Rop(OP_GE); |
378cc40b | 2662 | s--; |
79072805 | 2663 | Rop(OP_GT); |
378cc40b LW |
2664 | |
2665 | case '$': | |
bbce6d69 | 2666 | CLINE; |
2667 | ||
3280af22 NIS |
2668 | if (PL_expect == XOPERATOR) { |
2669 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2670 | PL_expect = XTERM; | |
a0d0e21e | 2671 | depcom(); |
bbce6d69 | 2672 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2673 | } |
8990e307 | 2674 | } |
a0d0e21e | 2675 | |
834a4ddd | 2676 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 NIS |
2677 | if (PL_expect == XOPERATOR) |
2678 | no_op("Array length", PL_bufptr); | |
2679 | PL_tokenbuf[0] = '@'; | |
2680 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2681 | FALSE); |
3280af22 | 2682 | if (!PL_tokenbuf[1]) |
a0d0e21e | 2683 | PREREF(DOLSHARP); |
3280af22 NIS |
2684 | PL_expect = XOPERATOR; |
2685 | PL_pending_ident = '#'; | |
463ee0b2 | 2686 | TOKEN(DOLSHARP); |
79072805 | 2687 | } |
bbce6d69 | 2688 | |
3280af22 NIS |
2689 | if (PL_expect == XOPERATOR) |
2690 | no_op("Scalar", PL_bufptr); | |
2691 | PL_tokenbuf[0] = '$'; | |
2692 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2693 | if (!PL_tokenbuf[1]) { | |
2694 | if (s == PL_bufend) | |
bbce6d69 | 2695 | yyerror("Final $ should be \\$ or $name"); |
2696 | PREREF('$'); | |
8990e307 | 2697 | } |
a0d0e21e | 2698 | |
bbce6d69 | 2699 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 2700 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 2701 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 2702 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 2703 | yylval.opval->op_private = OPpCONST_ARYBASE; |
2704 | TERM(THING); | |
2705 | } | |
2706 | ||
ff68c719 | 2707 | d = s; |
3280af22 | 2708 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2709 | s = skipspace(s); |
2710 | ||
3280af22 | 2711 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2712 | char *t; |
2713 | if (*s == '[') { | |
3280af22 | 2714 | PL_tokenbuf[0] = '@'; |
599cee73 | 2715 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 2716 | for(t = s + 1; |
834a4ddd | 2717 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 2718 | t++) ; |
a0d0e21e | 2719 | if (*t++ == ',') { |
3280af22 NIS |
2720 | PL_bufptr = skipspace(PL_bufptr); |
2721 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 2722 | t++; |
599cee73 PM |
2723 | warner(WARN_SYNTAX, |
2724 | "Multidimensional syntax %.*s not supported", | |
2725 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
2726 | } |
2727 | } | |
bbce6d69 | 2728 | } |
2729 | else if (*s == '{') { | |
3280af22 | 2730 | PL_tokenbuf[0] = '%'; |
599cee73 | 2731 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 2732 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
2733 | { | |
3280af22 | 2734 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2735 | STRLEN len; |
2736 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 2737 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 2738 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 GS |
2739 | for (; isSPACE(*t); t++) ; |
2740 | if (*t == ';' && perl_get_cv(tmpbuf, FALSE)) | |
599cee73 PM |
2741 | warner(WARN_SYNTAX, |
2742 | "You need to quote \"%s\"", tmpbuf); | |
748a9306 | 2743 | } |
93a17b20 LW |
2744 | } |
2745 | } | |
2f3197b3 | 2746 | } |
bbce6d69 | 2747 | |
3280af22 NIS |
2748 | PL_expect = XOPERATOR; |
2749 | if (PL_lex_state == LEX_NORMAL && isSPACE(*d)) { | |
2750 | bool islop = (PL_last_lop == PL_oldoldbufptr); | |
2751 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
2752 | PL_expect = XOPERATOR; | |
bbce6d69 | 2753 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 2754 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 2755 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 2756 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 2757 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 2758 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 2759 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
2760 | if (tmp = keyword(tmpbuf, len)) { |
2761 | /* binary operators exclude handle interpretations */ | |
2762 | switch (tmp) { | |
2763 | case -KEY_x: | |
2764 | case -KEY_eq: | |
2765 | case -KEY_ne: | |
2766 | case -KEY_gt: | |
2767 | case -KEY_lt: | |
2768 | case -KEY_ge: | |
2769 | case -KEY_le: | |
2770 | case -KEY_cmp: | |
2771 | break; | |
2772 | default: | |
3280af22 | 2773 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
2774 | break; |
2775 | } | |
2776 | } | |
68dc0745 | 2777 | else { |
2778 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2779 | if (gv && GvCVu(gv)) | |
3280af22 | 2780 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 2781 | } |
93a17b20 | 2782 | } |
bbce6d69 | 2783 | else if (isDIGIT(*s)) |
3280af22 | 2784 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 2785 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 2786 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 2787 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 2788 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 2789 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 2790 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 2791 | } |
3280af22 | 2792 | PL_pending_ident = '$'; |
79072805 | 2793 | TOKEN('$'); |
378cc40b LW |
2794 | |
2795 | case '@': | |
3280af22 | 2796 | if (PL_expect == XOPERATOR) |
bbce6d69 | 2797 | no_op("Array", s); |
3280af22 NIS |
2798 | PL_tokenbuf[0] = '@'; |
2799 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2800 | if (!PL_tokenbuf[1]) { | |
2801 | if (s == PL_bufend) | |
bbce6d69 | 2802 | yyerror("Final @ should be \\@ or @name"); |
2803 | PREREF('@'); | |
2804 | } | |
3280af22 | 2805 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2806 | s = skipspace(s); |
3280af22 | 2807 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2808 | if (*s == '{') |
3280af22 | 2809 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
2810 | |
2811 | /* Warn about @ where they meant $. */ | |
599cee73 | 2812 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
2813 | if (*s == '[' || *s == '{') { |
2814 | char *t = s + 1; | |
834a4ddd | 2815 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
2816 | t++; |
2817 | if (*t == '}' || *t == ']') { | |
2818 | t++; | |
3280af22 | 2819 | PL_bufptr = skipspace(PL_bufptr); |
599cee73 PM |
2820 | warner(WARN_SYNTAX, |
2821 | "Scalar value %.*s better written as $%.*s", | |
3280af22 | 2822 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 2823 | } |
93a17b20 LW |
2824 | } |
2825 | } | |
463ee0b2 | 2826 | } |
3280af22 | 2827 | PL_pending_ident = '@'; |
79072805 | 2828 | TERM('@'); |
378cc40b LW |
2829 | |
2830 | case '/': /* may either be division or pattern */ | |
2831 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 2832 | if (PL_expect != XOPERATOR) { |
c277df42 | 2833 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
2834 | if (PL_oldoldbufptr == PL_last_uni |
2835 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 2836 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 2837 | check_uni(); |
8782bef2 | 2838 | s = scan_pat(s,OP_MATCH); |
79072805 | 2839 | TERM(sublex_start()); |
378cc40b LW |
2840 | } |
2841 | tmp = *s++; | |
a687059c | 2842 | if (tmp == '/') |
79072805 | 2843 | Mop(OP_DIVIDE); |
378cc40b LW |
2844 | OPERATOR(tmp); |
2845 | ||
2846 | case '.': | |
51882d45 GS |
2847 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
2848 | #ifdef PERL_STRICT_CR | |
2849 | && s[1] == '\n' | |
2850 | #else | |
2851 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
2852 | #endif | |
2853 | && (s == PL_linestart || s[-1] == '\n') ) | |
2854 | { | |
3280af22 NIS |
2855 | PL_lex_formbrack = 0; |
2856 | PL_expect = XSTATE; | |
79072805 LW |
2857 | goto rightbracket; |
2858 | } | |
3280af22 | 2859 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 2860 | tmp = *s++; |
a687059c LW |
2861 | if (*s == tmp) { |
2862 | s++; | |
2f3197b3 LW |
2863 | if (*s == tmp) { |
2864 | s++; | |
79072805 | 2865 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2866 | } |
2867 | else | |
79072805 | 2868 | yylval.ival = 0; |
378cc40b | 2869 | OPERATOR(DOTDOT); |
a687059c | 2870 | } |
3280af22 | 2871 | if (PL_expect != XOPERATOR) |
2f3197b3 | 2872 | check_uni(); |
79072805 | 2873 | Aop(OP_CONCAT); |
378cc40b LW |
2874 | } |
2875 | /* FALL THROUGH */ | |
2876 | case '0': case '1': case '2': case '3': case '4': | |
2877 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2878 | s = scan_num(s); |
3280af22 | 2879 | if (PL_expect == XOPERATOR) |
8990e307 | 2880 | no_op("Number",s); |
79072805 LW |
2881 | TERM(THING); |
2882 | ||
2883 | case '\'': | |
8990e307 | 2884 | s = scan_str(s); |
3280af22 NIS |
2885 | if (PL_expect == XOPERATOR) { |
2886 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2887 | PL_expect = XTERM; | |
a0d0e21e LW |
2888 | depcom(); |
2889 | return ','; /* grandfather non-comma-format format */ | |
2890 | } | |
463ee0b2 | 2891 | else |
8990e307 | 2892 | no_op("String",s); |
463ee0b2 | 2893 | } |
79072805 | 2894 | if (!s) |
85e6fe83 | 2895 | missingterm((char*)0); |
79072805 LW |
2896 | yylval.ival = OP_CONST; |
2897 | TERM(sublex_start()); | |
2898 | ||
2899 | case '"': | |
8990e307 | 2900 | s = scan_str(s); |
3280af22 NIS |
2901 | if (PL_expect == XOPERATOR) { |
2902 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2903 | PL_expect = XTERM; | |
a0d0e21e LW |
2904 | depcom(); |
2905 | return ','; /* grandfather non-comma-format format */ | |
2906 | } | |
463ee0b2 | 2907 | else |
8990e307 | 2908 | no_op("String",s); |
463ee0b2 | 2909 | } |
79072805 | 2910 | if (!s) |
85e6fe83 | 2911 | missingterm((char*)0); |
4633a7c4 | 2912 | yylval.ival = OP_CONST; |
3280af22 | 2913 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 2914 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
2915 | yylval.ival = OP_STRINGIFY; |
2916 | break; | |
2917 | } | |
2918 | } | |
79072805 LW |
2919 | TERM(sublex_start()); |
2920 | ||
2921 | case '`': | |
2922 | s = scan_str(s); | |
3280af22 | 2923 | if (PL_expect == XOPERATOR) |
8990e307 | 2924 | no_op("Backticks",s); |
79072805 | 2925 | if (!s) |
85e6fe83 | 2926 | missingterm((char*)0); |
79072805 LW |
2927 | yylval.ival = OP_BACKTICK; |
2928 | set_csh(); | |
2929 | TERM(sublex_start()); | |
2930 | ||
2931 | case '\\': | |
2932 | s++; | |
599cee73 PM |
2933 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
2934 | warner(WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", | |
2935 | *s, *s); | |
3280af22 | 2936 | if (PL_expect == XOPERATOR) |
8990e307 | 2937 | no_op("Backslash",s); |
79072805 LW |
2938 | OPERATOR(REFGEN); |
2939 | ||
2940 | case 'x': | |
3280af22 | 2941 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
2942 | s++; |
2943 | Mop(OP_REPEAT); | |
2f3197b3 | 2944 | } |
79072805 LW |
2945 | goto keylookup; |
2946 | ||
378cc40b | 2947 | case '_': |
79072805 LW |
2948 | case 'a': case 'A': |
2949 | case 'b': case 'B': | |
2950 | case 'c': case 'C': | |
2951 | case 'd': case 'D': | |
2952 | case 'e': case 'E': | |
2953 | case 'f': case 'F': | |
2954 | case 'g': case 'G': | |
2955 | case 'h': case 'H': | |
2956 | case 'i': case 'I': | |
2957 | case 'j': case 'J': | |
2958 | case 'k': case 'K': | |
2959 | case 'l': case 'L': | |
2960 | case 'm': case 'M': | |
2961 | case 'n': case 'N': | |
2962 | case 'o': case 'O': | |
2963 | case 'p': case 'P': | |
2964 | case 'q': case 'Q': | |
2965 | case 'r': case 'R': | |
2966 | case 's': case 'S': | |
2967 | case 't': case 'T': | |
2968 | case 'u': case 'U': | |
2969 | case 'v': case 'V': | |
2970 | case 'w': case 'W': | |
2971 | case 'X': | |
2972 | case 'y': case 'Y': | |
2973 | case 'z': case 'Z': | |
2974 | ||
49dc05e3 | 2975 | keylookup: { |
2d8e6c8d | 2976 | STRLEN n_a; |
161b471a NIS |
2977 | gv = Nullgv; |
2978 | gvp = 0; | |
49dc05e3 | 2979 | |
3280af22 NIS |
2980 | PL_bufptr = s; |
2981 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 2982 | |
2983 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
2984 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
2985 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
2986 | (PL_tokenbuf[0] == 'q' && | |
2987 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 2988 | |
2989 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 2990 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
2991 | goto just_a_word; |
2992 | ||
3643fb5f | 2993 | d = s; |
3280af22 | 2994 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
2995 | d++; /* no comments skipped here, or s### is misparsed */ |
2996 | ||
2997 | /* Is this a label? */ | |
3280af22 NIS |
2998 | if (!tmp && PL_expect == XSTATE |
2999 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3000 | s = d + 1; |
3280af22 | 3001 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3002 | CLINE; |
3003 | TOKEN(LABEL); | |
3643fb5f CS |
3004 | } |
3005 | ||
3006 | /* Check for keywords */ | |
3280af22 | 3007 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3008 | |
3009 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3010 | if (strnEQ(d,"=>",2)) { |
3011 | CLINE; | |
3280af22 | 3012 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3013 | yylval.opval->op_private = OPpCONST_BARE; |
3014 | TERM(WORD); | |
3015 | } | |
3016 | ||
a0d0e21e | 3017 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3018 | GV *ogv = Nullgv; /* override (winner) */ |
3019 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3020 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3021 | CV *cv; |
3280af22 | 3022 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3023 | (cv = GvCVu(gv))) |
3024 | { | |
3025 | if (GvIMPORTED_CV(gv)) | |
3026 | ogv = gv; | |
3027 | else if (! CvMETHOD(cv)) | |
3028 | hgv = gv; | |
3029 | } | |
3030 | if (!ogv && | |
3280af22 NIS |
3031 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3032 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3033 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3034 | { | |
3035 | ogv = gv; | |
3036 | } | |
3037 | } | |
3038 | if (ogv) { | |
3039 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3040 | } |
3041 | else if (gv && !gvp | |
3042 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3043 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3044 | { |
3045 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3046 | } |
56f7f34b CS |
3047 | else { /* no override */ |
3048 | tmp = -tmp; | |
3049 | gv = Nullgv; | |
3050 | gvp = 0; | |
4944e2f7 GS |
3051 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3052 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
599cee73 PM |
3053 | warner(WARN_AMBIGUOUS, |
3054 | "Ambiguous call resolved as CORE::%s(), %s", | |
2f3ca594 | 3055 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3056 | } |
a0d0e21e LW |
3057 | } |
3058 | ||
3059 | reserved_word: | |
3060 | switch (tmp) { | |
79072805 LW |
3061 | |
3062 | default: /* not a keyword */ | |
93a17b20 | 3063 | just_a_word: { |
96e4d5b1 | 3064 | SV *sv; |
3280af22 | 3065 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3066 | |
3067 | /* Get the rest if it looks like a package qualifier */ | |
3068 | ||
a0d0e21e | 3069 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3070 | STRLEN morelen; |
3280af22 | 3071 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3072 | TRUE, &morelen); |
3073 | if (!morelen) | |
3280af22 | 3074 | croak("Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3075 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3076 | len += morelen; |
a0d0e21e | 3077 | } |
8990e307 | 3078 | |
3280af22 NIS |
3079 | if (PL_expect == XOPERATOR) { |
3080 | if (PL_bufptr == PL_linestart) { | |
3081 | PL_curcop->cop_line--; | |
22c35a8c | 3082 | warner(WARN_SEMICOLON, PL_warn_nosemi); |
3280af22 | 3083 | PL_curcop->cop_line++; |
463ee0b2 LW |
3084 | } |
3085 | else | |
54310121 | 3086 | no_op("Bareword",s); |
463ee0b2 | 3087 | } |
8990e307 | 3088 | |
c3e0f903 GS |
3089 | /* Look for a subroutine with this name in current package, |
3090 | unless name is "Foo::", in which case Foo is a bearword | |
3091 | (and a package name). */ | |
3092 | ||
3093 | if (len > 2 && | |
3280af22 | 3094 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3095 | { |
599cee73 PM |
3096 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3097 | warner(WARN_UNSAFE, | |
3098 | "Bareword \"%s\" refers to nonexistent package", | |
3280af22 | 3099 | PL_tokenbuf); |
c3e0f903 | 3100 | len -= 2; |
3280af22 | 3101 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3102 | gv = Nullgv; |
3103 | gvp = 0; | |
3104 | } | |
3105 | else { | |
3106 | len = 0; | |
3107 | if (!gv) | |
3280af22 | 3108 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3109 | } |
3110 | ||
3111 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3112 | |
49dc05e3 GS |
3113 | if (gvp) { |
3114 | sv = newSVpv("CORE::GLOBAL::",14); | |
3280af22 | 3115 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3116 | } |
3117 | else | |
3280af22 | 3118 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3119 | |
a0d0e21e LW |
3120 | /* Presume this is going to be a bareword of some sort. */ |
3121 | ||
3122 | CLINE; | |
49dc05e3 | 3123 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3124 | yylval.opval->op_private = OPpCONST_BARE; |
3125 | ||
c3e0f903 GS |
3126 | /* And if "Foo::", then that's what it certainly is. */ |
3127 | ||
3128 | if (len) | |
3129 | goto safe_bareword; | |
3130 | ||
8990e307 LW |
3131 | /* See if it's the indirect object for a list operator. */ |
3132 | ||
3280af22 NIS |
3133 | if (PL_oldoldbufptr && |
3134 | PL_oldoldbufptr < PL_bufptr && | |
3135 | (PL_oldoldbufptr == PL_last_lop || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3136 | /* NO SKIPSPACE BEFORE HERE! */ |
3280af22 | 3137 | (PL_expect == XREF |
22c35a8c | 3138 | || ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF |
3280af22 NIS |
3139 | || (PL_last_lop_op == OP_ENTERSUB |
3140 | && PL_last_proto | |
3141 | && PL_last_proto[PL_last_proto[0] == ';' ? 1 : 0] == '*')) ) | |
a0d0e21e | 3142 | { |
748a9306 LW |
3143 | bool immediate_paren = *s == '('; |
3144 | ||
a0d0e21e LW |
3145 | /* (Now we can afford to cross potential line boundary.) */ |
3146 | s = skipspace(s); | |
3147 | ||
3148 | /* Two barewords in a row may indicate method call. */ | |
3149 | ||
834a4ddd | 3150 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3151 | return tmp; |
3152 | ||
3153 | /* If not a declared subroutine, it's an indirect object. */ | |
3154 | /* (But it's an indir obj regardless for sort.) */ | |
3155 | ||
3280af22 | 3156 | if ((PL_last_lop_op == OP_SORT || |
8ebc5c01 | 3157 | (!immediate_paren && (!gv || !GvCVu(gv))) ) && |
3280af22 NIS |
3158 | (PL_last_lop_op != OP_MAPSTART && PL_last_lop_op != OP_GREPSTART)){ |
3159 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; | |
748a9306 | 3160 | goto bareword; |
93a17b20 LW |
3161 | } |
3162 | } | |
8990e307 LW |
3163 | |
3164 | /* If followed by a paren, it's certainly a subroutine. */ | |
3165 | ||
3280af22 | 3166 | PL_expect = XOPERATOR; |
8990e307 | 3167 | s = skipspace(s); |
93a17b20 | 3168 | if (*s == '(') { |
79072805 | 3169 | CLINE; |
96e4d5b1 | 3170 | if (gv && GvCVu(gv)) { |
bf848113 GB |
3171 | CV *cv; |
3172 | if ((cv = GvCV(gv)) && SvPOK(cv)) | |
2d8e6c8d | 3173 | PL_last_proto = SvPV((SV*)cv, n_a); |
96e4d5b1 | 3174 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; |
bf848113 | 3175 | if (*d == ')' && (sv = cv_const_sv(cv))) { |
96e4d5b1 | 3176 | s = d + 1; |
3177 | goto its_constant; | |
3178 | } | |
3179 | } | |
3280af22 NIS |
3180 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3181 | PL_expect = XOPERATOR; | |
93a17b20 | 3182 | force_next(WORD); |
c07a80fd | 3183 | yylval.ival = 0; |
bf848113 | 3184 | PL_last_lop_op = OP_ENTERSUB; |
463ee0b2 | 3185 | TOKEN('&'); |
79072805 | 3186 | } |
93a17b20 | 3187 | |
a0d0e21e | 3188 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3189 | |
8ebc5c01 | 3190 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3191 | PL_last_lop = PL_oldbufptr; |
3192 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3193 | PREBLOCK(METHOD); |
463ee0b2 LW |
3194 | } |
3195 | ||
8990e307 LW |
3196 | /* If followed by a bareword, see if it looks like indir obj. */ |
3197 | ||
834a4ddd | 3198 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3199 | return tmp; |
93a17b20 | 3200 | |
8990e307 LW |
3201 | /* Not a method, so call it a subroutine (if defined) */ |
3202 | ||
8ebc5c01 | 3203 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3204 | CV* cv; |
748a9306 | 3205 | if (lastchar == '-') |
c2960299 | 3206 | warn("Ambiguous use of -%s resolved as -&%s()", |
3280af22 NIS |
3207 | PL_tokenbuf, PL_tokenbuf); |
3208 | PL_last_lop = PL_oldbufptr; | |
3209 | PL_last_lop_op = OP_ENTERSUB; | |
89bfa8cd | 3210 | /* Check for a constant sub */ |
46fc3d4c | 3211 | cv = GvCV(gv); |
96e4d5b1 | 3212 | if ((sv = cv_const_sv(cv))) { |
3213 | its_constant: | |
3214 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3215 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3216 | yylval.opval->op_private = 0; | |
3217 | TOKEN(WORD); | |
89bfa8cd | 3218 | } |
3219 | ||
a5f75d66 AD |
3220 | /* Resolve to GV now. */ |
3221 | op_free(yylval.opval); | |
3222 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
bf848113 | 3223 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3224 | /* Is there a prototype? */ |
3225 | if (SvPOK(cv)) { | |
3226 | STRLEN len; | |
3280af22 | 3227 | PL_last_proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3228 | if (!len) |
3229 | TERM(FUNC0SUB); | |
3280af22 | 3230 | if (strEQ(PL_last_proto, "$")) |
4633a7c4 | 3231 | OPERATOR(UNIOPSUB); |
3280af22 NIS |
3232 | if (*PL_last_proto == '&' && *s == '{') { |
3233 | sv_setpv(PL_subname,"__ANON__"); | |
4633a7c4 LW |
3234 | PREBLOCK(LSTOPSUB); |
3235 | } | |
2a841d13 | 3236 | } else |
3280af22 NIS |
3237 | PL_last_proto = NULL; |
3238 | PL_nextval[PL_nexttoke].opval = yylval.opval; | |
3239 | PL_expect = XTERM; | |
8990e307 LW |
3240 | force_next(WORD); |
3241 | TOKEN(NOAMP); | |
3242 | } | |
748a9306 | 3243 | |
3280af22 | 3244 | if (PL_hints & HINT_STRICT_SUBS && |
748a9306 | 3245 | lastchar != '-' && |
a0d0e21e | 3246 | strnNE(s,"->",2) && |
3280af22 NIS |
3247 | PL_last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */ |
3248 | PL_last_lop_op != OP_ACCEPT && | |
3249 | PL_last_lop_op != OP_PIPE_OP && | |
bf848113 GB |
3250 | PL_last_lop_op != OP_SOCKPAIR && |
3251 | !(PL_last_lop_op == OP_ENTERSUB | |
3252 | && PL_last_proto | |
3253 | && PL_last_proto[PL_last_proto[0] == ';' ? 1 : 0] == '*')) | |
a0d0e21e LW |
3254 | { |
3255 | warn( | |
3256 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
3280af22 NIS |
3257 | PL_tokenbuf); |
3258 | ++PL_error_count; | |
85e6fe83 | 3259 | } |
8990e307 LW |
3260 | |
3261 | /* Call it a bare word */ | |
3262 | ||
748a9306 | 3263 | bareword: |
599cee73 | 3264 | if (ckWARN(WARN_RESERVED)) { |
748a9306 | 3265 | if (lastchar != '-') { |
3280af22 | 3266 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; |
748a9306 | 3267 | if (!*d) |
22c35a8c | 3268 | warner(WARN_RESERVED, PL_warn_reserved, PL_tokenbuf); |
748a9306 LW |
3269 | } |
3270 | } | |
c3e0f903 GS |
3271 | |
3272 | safe_bareword: | |
748a9306 LW |
3273 | if (lastchar && strchr("*%&", lastchar)) { |
3274 | warn("Operator or semicolon missing before %c%s", | |
3280af22 | 3275 | lastchar, PL_tokenbuf); |
c2960299 | 3276 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3277 | lastchar, lastchar); |
3278 | } | |
93a17b20 | 3279 | TOKEN(WORD); |
79072805 | 3280 | } |
79072805 | 3281 | |
68dc0745 | 3282 | case KEY___FILE__: |
46fc3d4c | 3283 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3284 | newSVsv(GvSV(PL_curcop->cop_filegv))); |
46fc3d4c | 3285 | TERM(THING); |
3286 | ||
79072805 | 3287 | case KEY___LINE__: |
46fc3d4c | 3288 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3289 | newSVpvf("%ld", (long)PL_curcop->cop_line)); |
79072805 | 3290 | TERM(THING); |
68dc0745 | 3291 | |
3292 | case KEY___PACKAGE__: | |
3293 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3294 | (PL_curstash |
3295 | ? newSVsv(PL_curstname) | |
3296 | : &PL_sv_undef)); | |
79072805 | 3297 | TERM(THING); |
79072805 | 3298 | |
e50aee73 | 3299 | case KEY___DATA__: |
79072805 LW |
3300 | case KEY___END__: { |
3301 | GV *gv; | |
79072805 LW |
3302 | |
3303 | /*SUPPRESS 560*/ | |
3280af22 | 3304 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3305 | char *pname = "main"; |
3280af22 NIS |
3306 | if (PL_tokenbuf[2] == 'D') |
3307 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
46fc3d4c | 3308 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3309 | GvMULTI_on(gv); |
79072805 | 3310 | if (!GvIO(gv)) |
a0d0e21e | 3311 | GvIOp(gv) = newIO(); |
3280af22 | 3312 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3313 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3314 | { | |
3280af22 | 3315 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3316 | fcntl(fd,F_SETFD,fd >= 3); |
3317 | } | |
79072805 | 3318 | #endif |
fd049845 | 3319 | /* Mark this internal pseudo-handle as clean */ |
3320 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3321 | if (PL_preprocess) |
a0d0e21e | 3322 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3323 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3324 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3325 | else |
a0d0e21e | 3326 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3327 | PL_rsfp = Nullfp; |
79072805 LW |
3328 | } |
3329 | goto fake_eof; | |
e929a76b | 3330 | } |
de3bb511 | 3331 | |
8990e307 | 3332 | case KEY_AUTOLOAD: |
ed6116ce | 3333 | case KEY_DESTROY: |
79072805 LW |
3334 | case KEY_BEGIN: |
3335 | case KEY_END: | |
7d07dbc2 | 3336 | case KEY_INIT: |
3280af22 NIS |
3337 | if (PL_expect == XSTATE) { |
3338 | s = PL_bufptr; | |
93a17b20 | 3339 | goto really_sub; |
79072805 LW |
3340 | } |
3341 | goto just_a_word; | |
3342 | ||
a0d0e21e LW |
3343 | case KEY_CORE: |
3344 | if (*s == ':' && s[1] == ':') { | |
3345 | s += 2; | |
748a9306 | 3346 | d = s; |
3280af22 NIS |
3347 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3348 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3349 | if (tmp < 0) |
3350 | tmp = -tmp; | |
3351 | goto reserved_word; | |
3352 | } | |
3353 | goto just_a_word; | |
3354 | ||
463ee0b2 LW |
3355 | case KEY_abs: |
3356 | UNI(OP_ABS); | |
3357 | ||
79072805 LW |
3358 | case KEY_alarm: |
3359 | UNI(OP_ALARM); | |
3360 | ||
3361 | case KEY_accept: | |
a0d0e21e | 3362 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3363 | |
463ee0b2 LW |
3364 | case KEY_and: |
3365 | OPERATOR(ANDOP); | |
3366 | ||
79072805 | 3367 | case KEY_atan2: |
a0d0e21e | 3368 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3369 | |
79072805 | 3370 | case KEY_bind: |
a0d0e21e | 3371 | LOP(OP_BIND,XTERM); |
79072805 LW |
3372 | |
3373 | case KEY_binmode: | |
3374 | UNI(OP_BINMODE); | |
3375 | ||
3376 | case KEY_bless: | |
a0d0e21e | 3377 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3378 | |
3379 | case KEY_chop: | |
3380 | UNI(OP_CHOP); | |
3381 | ||
3382 | case KEY_continue: | |
3383 | PREBLOCK(CONTINUE); | |
3384 | ||
3385 | case KEY_chdir: | |
85e6fe83 | 3386 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3387 | UNI(OP_CHDIR); |
3388 | ||
3389 | case KEY_close: | |
3390 | UNI(OP_CLOSE); | |
3391 | ||
3392 | case KEY_closedir: | |
3393 | UNI(OP_CLOSEDIR); | |
3394 | ||
3395 | case KEY_cmp: | |
3396 | Eop(OP_SCMP); | |
3397 | ||
3398 | case KEY_caller: | |
3399 | UNI(OP_CALLER); | |
3400 | ||
3401 | case KEY_crypt: | |
3402 | #ifdef FCRYPT | |
6b88bc9c | 3403 | if (!PL_cryptseen++) |
de3bb511 | 3404 | init_des(); |
a687059c | 3405 | #endif |
a0d0e21e | 3406 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3407 | |
3408 | case KEY_chmod: | |
599cee73 | 3409 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3410 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
3411 | if (*d != '0' && isDIGIT(*d)) |
3412 | yywarn("chmod: mode argument is missing initial 0"); | |
3413 | } | |
a0d0e21e | 3414 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3415 | |
3416 | case KEY_chown: | |
a0d0e21e | 3417 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3418 | |
3419 | case KEY_connect: | |
a0d0e21e | 3420 | LOP(OP_CONNECT,XTERM); |
79072805 | 3421 | |
463ee0b2 LW |
3422 | case KEY_chr: |
3423 | UNI(OP_CHR); | |
3424 | ||
79072805 LW |
3425 | case KEY_cos: |
3426 | UNI(OP_COS); | |
3427 | ||
3428 | case KEY_chroot: | |
3429 | UNI(OP_CHROOT); | |
3430 | ||
3431 | case KEY_do: | |
3432 | s = skipspace(s); | |
3433 | if (*s == '{') | |
a0d0e21e | 3434 | PRETERMBLOCK(DO); |
79072805 | 3435 | if (*s != '\'') |
a0d0e21e | 3436 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3437 | OPERATOR(DO); |
79072805 LW |
3438 | |
3439 | case KEY_die: | |
3280af22 | 3440 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3441 | LOP(OP_DIE,XTERM); |
79072805 LW |
3442 | |
3443 | case KEY_defined: | |
3444 | UNI(OP_DEFINED); | |
3445 | ||
3446 | case KEY_delete: | |
a0d0e21e | 3447 | UNI(OP_DELETE); |
79072805 LW |
3448 | |
3449 | case KEY_dbmopen: | |
a0d0e21e LW |
3450 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3451 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3452 | |
3453 | case KEY_dbmclose: | |
3454 | UNI(OP_DBMCLOSE); | |
3455 | ||
3456 | case KEY_dump: | |
a0d0e21e | 3457 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3458 | LOOPX(OP_DUMP); |
3459 | ||
3460 | case KEY_else: | |
3461 | PREBLOCK(ELSE); | |
3462 | ||
3463 | case KEY_elsif: | |
3280af22 | 3464 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3465 | OPERATOR(ELSIF); |
3466 | ||
3467 | case KEY_eq: | |
3468 | Eop(OP_SEQ); | |
3469 | ||
a0d0e21e LW |
3470 | case KEY_exists: |
3471 | UNI(OP_EXISTS); | |
3472 | ||
79072805 LW |
3473 | case KEY_exit: |
3474 | UNI(OP_EXIT); | |
3475 | ||
3476 | case KEY_eval: | |
79072805 | 3477 | s = skipspace(s); |
3280af22 | 3478 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3479 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3480 | |
3481 | case KEY_eof: | |
3482 | UNI(OP_EOF); | |
3483 | ||
3484 | case KEY_exp: | |
3485 | UNI(OP_EXP); | |
3486 | ||
3487 | case KEY_each: | |
3488 | UNI(OP_EACH); | |
3489 | ||
3490 | case KEY_exec: | |
3491 | set_csh(); | |
a0d0e21e | 3492 | LOP(OP_EXEC,XREF); |
79072805 LW |
3493 | |
3494 | case KEY_endhostent: | |
3495 | FUN0(OP_EHOSTENT); | |
3496 | ||
3497 | case KEY_endnetent: | |
3498 | FUN0(OP_ENETENT); | |
3499 | ||
3500 | case KEY_endservent: | |
3501 | FUN0(OP_ESERVENT); | |
3502 | ||
3503 | case KEY_endprotoent: | |
3504 | FUN0(OP_EPROTOENT); | |
3505 | ||
3506 | case KEY_endpwent: | |
3507 | FUN0(OP_EPWENT); | |
3508 | ||
3509 | case KEY_endgrent: | |
3510 | FUN0(OP_EGRENT); | |
3511 | ||
3512 | case KEY_for: | |
3513 | case KEY_foreach: | |
3280af22 | 3514 | yylval.ival = PL_curcop->cop_line; |
55497cff | 3515 | s = skipspace(s); |
834a4ddd | 3516 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 3517 | char *p = s; |
3280af22 | 3518 | if ((PL_bufend - p) >= 3 && |
55497cff | 3519 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3520 | p += 2; | |
3521 | p = skipspace(p); | |
834a4ddd | 3522 | if (isIDFIRST_lazy(p)) |
55497cff | 3523 | croak("Missing $ on loop variable"); |
3524 | } | |
79072805 LW |
3525 | OPERATOR(FOR); |
3526 | ||
3527 | case KEY_formline: | |
a0d0e21e | 3528 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3529 | |
3530 | case KEY_fork: | |
3531 | FUN0(OP_FORK); | |
3532 | ||
3533 | case KEY_fcntl: | |
a0d0e21e | 3534 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3535 | |
3536 | case KEY_fileno: | |
3537 | UNI(OP_FILENO); | |
3538 | ||
3539 | case KEY_flock: | |
a0d0e21e | 3540 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3541 | |
3542 | case KEY_gt: | |
3543 | Rop(OP_SGT); | |
3544 | ||
3545 | case KEY_ge: | |
3546 | Rop(OP_SGE); | |
3547 | ||
3548 | case KEY_grep: | |
a0d0e21e | 3549 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3550 | |
3551 | case KEY_goto: | |
a0d0e21e | 3552 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3553 | LOOPX(OP_GOTO); |
3554 | ||
3555 | case KEY_gmtime: | |
3556 | UNI(OP_GMTIME); | |
3557 | ||
3558 | case KEY_getc: | |
3559 | UNI(OP_GETC); | |
3560 | ||
3561 | case KEY_getppid: | |
3562 | FUN0(OP_GETPPID); | |
3563 | ||
3564 | case KEY_getpgrp: | |
3565 | UNI(OP_GETPGRP); | |
3566 | ||
3567 | case KEY_getpriority: | |
a0d0e21e | 3568 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3569 | |
3570 | case KEY_getprotobyname: | |
3571 | UNI(OP_GPBYNAME); | |
3572 | ||
3573 | case KEY_getprotobynumber: | |
a0d0e21e | 3574 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3575 | |
3576 | case KEY_getprotoent: | |
3577 | FUN0(OP_GPROTOENT); | |
3578 | ||
3579 | case KEY_getpwent: | |
3580 | FUN0(OP_GPWENT); | |
3581 | ||
3582 | case KEY_getpwnam: | |
ff68c719 | 3583 | UNI(OP_GPWNAM); |
79072805 LW |
3584 | |
3585 | case KEY_getpwuid: | |
ff68c719 | 3586 | UNI(OP_GPWUID); |
79072805 LW |
3587 | |
3588 | case KEY_getpeername: | |
3589 | UNI(OP_GETPEERNAME); | |
3590 | ||
3591 | case KEY_gethostbyname: | |
3592 | UNI(OP_GHBYNAME); | |
3593 | ||
3594 | case KEY_gethostbyaddr: | |
a0d0e21e | 3595 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
3596 | |
3597 | case KEY_gethostent: |