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 LW |
63 | #define UTF (PL_hints & HINT_UTF8) |
64 | ||
79072805 LW |
65 | /* The following are arranged oddly so that the guard on the switch statement |
66 | * can get by with a single comparison (if the compiler is smart enough). | |
67 | */ | |
68 | ||
fb73857a | 69 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
70 | ||
55497cff | 71 | #define LEX_NORMAL 10 |
72 | #define LEX_INTERPNORMAL 9 | |
73 | #define LEX_INTERPCASEMOD 8 | |
74 | #define LEX_INTERPPUSH 7 | |
75 | #define LEX_INTERPSTART 6 | |
76 | #define LEX_INTERPEND 5 | |
77 | #define LEX_INTERPENDMAYBE 4 | |
78 | #define LEX_INTERPCONCAT 3 | |
79 | #define LEX_INTERPCONST 2 | |
80 | #define LEX_FORMLINE 1 | |
81 | #define LEX_KNOWNEXT 0 | |
79072805 | 82 | |
395c3793 LW |
83 | #ifdef I_FCNTL |
84 | #include <fcntl.h> | |
85 | #endif | |
fe14fcc3 LW |
86 | #ifdef I_SYS_FILE |
87 | #include <sys/file.h> | |
88 | #endif | |
395c3793 | 89 | |
a790bc05 | 90 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
91 | #ifdef I_UNISTD | |
92 | # include <unistd.h> /* Needed for execv() */ | |
93 | #endif | |
94 | ||
95 | ||
79072805 LW |
96 | #ifdef ff_next |
97 | #undef ff_next | |
d48672a2 LW |
98 | #endif |
99 | ||
79072805 | 100 | #include "keywords.h" |
fe14fcc3 | 101 | |
ae986130 LW |
102 | #ifdef CLINE |
103 | #undef CLINE | |
104 | #endif | |
3280af22 NIS |
105 | #define CLINE (PL_copline = (PL_curcop->cop_line < PL_copline ? PL_curcop->cop_line : PL_copline)) |
106 | ||
107 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) | |
108 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
109 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
110 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
111 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
112 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
113 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
114 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
115 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
116 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
117 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
118 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
119 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
120 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
121 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
122 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
123 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
124 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
125 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
126 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 127 | |
a687059c LW |
128 | /* This bit of chicanery makes a unary function followed by |
129 | * a parenthesis into a function with one argument, highest precedence. | |
130 | */ | |
2f3197b3 | 131 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
132 | PL_expect = XTERM, \ |
133 | PL_bufptr = s, \ | |
134 | PL_last_uni = PL_oldbufptr, \ | |
135 | PL_last_lop_op = f, \ | |
a687059c LW |
136 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
137 | ||
79072805 | 138 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
139 | PL_bufptr = s, \ |
140 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
141 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
142 | ||
9f68db38 | 143 | /* grandfather return to old style */ |
3280af22 | 144 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 145 | |
76e3520e | 146 | STATIC int |
8ac85365 | 147 | ao(int toketype) |
a0d0e21e | 148 | { |
3280af22 NIS |
149 | if (*PL_bufptr == '=') { |
150 | PL_bufptr++; | |
a0d0e21e LW |
151 | if (toketype == ANDAND) |
152 | yylval.ival = OP_ANDASSIGN; | |
153 | else if (toketype == OROR) | |
154 | yylval.ival = OP_ORASSIGN; | |
155 | toketype = ASSIGNOP; | |
156 | } | |
157 | return toketype; | |
158 | } | |
159 | ||
76e3520e | 160 | STATIC void |
8ac85365 | 161 | no_op(char *what, char *s) |
463ee0b2 | 162 | { |
3280af22 NIS |
163 | char *oldbp = PL_bufptr; |
164 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 165 | |
3280af22 | 166 | PL_bufptr = s; |
46fc3d4c | 167 | yywarn(form("%s found where operator expected", what)); |
748a9306 | 168 | if (is_first) |
a0d0e21e | 169 | warn("\t(Missing semicolon on previous line?)\n"); |
3280af22 | 170 | else if (PL_oldoldbufptr && isIDFIRST(*PL_oldoldbufptr)) { |
748a9306 | 171 | char *t; |
3280af22 NIS |
172 | for (t = PL_oldoldbufptr; *t && (isALNUM(*t) || *t == ':'); t++) ; |
173 | if (t < PL_bufptr && isSPACE(*t)) | |
748a9306 | 174 | warn("\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 175 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
176 | |
177 | } | |
178 | else | |
179 | warn("\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
3280af22 | 180 | PL_bufptr = oldbp; |
8990e307 LW |
181 | } |
182 | ||
76e3520e | 183 | STATIC void |
8ac85365 | 184 | missingterm(char *s) |
8990e307 LW |
185 | { |
186 | char tmpbuf[3]; | |
187 | char q; | |
188 | if (s) { | |
189 | char *nl = strrchr(s,'\n'); | |
d2719217 | 190 | if (nl) |
8990e307 LW |
191 | *nl = '\0'; |
192 | } | |
9d116dd7 JH |
193 | else if ( |
194 | #ifdef EBCDIC | |
195 | iscntrl(PL_multi_close) | |
196 | #else | |
197 | PL_multi_close < 32 || PL_multi_close == 127 | |
198 | #endif | |
199 | ) { | |
8990e307 | 200 | *tmpbuf = '^'; |
3280af22 | 201 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
202 | s = "\\n"; |
203 | tmpbuf[2] = '\0'; | |
204 | s = tmpbuf; | |
205 | } | |
206 | else { | |
3280af22 | 207 | *tmpbuf = PL_multi_close; |
8990e307 LW |
208 | tmpbuf[1] = '\0'; |
209 | s = tmpbuf; | |
210 | } | |
211 | q = strchr(s,'"') ? '\'' : '"'; | |
212 | croak("Can't find string terminator %c%s%c anywhere before EOF",q,s,q); | |
463ee0b2 | 213 | } |
79072805 LW |
214 | |
215 | void | |
8ac85365 | 216 | deprecate(char *s) |
a0d0e21e | 217 | { |
d008e5eb | 218 | dTHR; |
599cee73 PM |
219 | if (ckWARN(WARN_DEPRECATED)) |
220 | warner(WARN_DEPRECATED, "Use of %s is deprecated", s); | |
a0d0e21e LW |
221 | } |
222 | ||
76e3520e | 223 | STATIC void |
8ac85365 | 224 | depcom(void) |
a0d0e21e LW |
225 | { |
226 | deprecate("comma-less variable list"); | |
227 | } | |
228 | ||
a868473f NIS |
229 | #ifdef WIN32 |
230 | ||
76e3520e | 231 | STATIC I32 |
a868473f NIS |
232 | win32_textfilter(int idx, SV *sv, int maxlen) |
233 | { | |
234 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
235 | if (count > 0 && !maxlen) | |
236 | win32_strip_return(sv); | |
237 | return count; | |
238 | } | |
239 | #endif | |
240 | ||
dfe13c55 GS |
241 | #ifndef PERL_OBJECT |
242 | ||
a0ed51b3 LW |
243 | STATIC I32 |
244 | utf16_textfilter(int idx, SV *sv, int maxlen) | |
245 | { | |
246 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
247 | if (count) { | |
dfe13c55 GS |
248 | U8* tmps; |
249 | U8* tend; | |
250 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 251 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 252 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
253 | |
254 | } | |
255 | return count; | |
256 | } | |
257 | ||
258 | STATIC I32 | |
259 | utf16rev_textfilter(int idx, SV *sv, int maxlen) | |
260 | { | |
261 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
262 | if (count) { | |
dfe13c55 GS |
263 | U8* tmps; |
264 | U8* tend; | |
265 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 266 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 267 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
268 | |
269 | } | |
270 | return count; | |
271 | } | |
a868473f | 272 | |
dfe13c55 GS |
273 | #endif |
274 | ||
a0d0e21e | 275 | void |
8ac85365 | 276 | lex_start(SV *line) |
79072805 | 277 | { |
0f15f207 | 278 | dTHR; |
8990e307 LW |
279 | char *s; |
280 | STRLEN len; | |
281 | ||
3280af22 NIS |
282 | SAVEI32(PL_lex_dojoin); |
283 | SAVEI32(PL_lex_brackets); | |
284 | SAVEI32(PL_lex_fakebrack); | |
285 | SAVEI32(PL_lex_casemods); | |
286 | SAVEI32(PL_lex_starts); | |
287 | SAVEI32(PL_lex_state); | |
288 | SAVESPTR(PL_lex_inpat); | |
289 | SAVEI32(PL_lex_inwhat); | |
290 | SAVEI16(PL_curcop->cop_line); | |
291 | SAVEPPTR(PL_bufptr); | |
292 | SAVEPPTR(PL_bufend); | |
293 | SAVEPPTR(PL_oldbufptr); | |
294 | SAVEPPTR(PL_oldoldbufptr); | |
295 | SAVEPPTR(PL_linestart); | |
296 | SAVESPTR(PL_linestr); | |
297 | SAVEPPTR(PL_lex_brackstack); | |
298 | SAVEPPTR(PL_lex_casestack); | |
299 | SAVEDESTRUCTOR(restore_rsfp, PL_rsfp); | |
300 | SAVESPTR(PL_lex_stuff); | |
301 | SAVEI32(PL_lex_defer); | |
302 | SAVESPTR(PL_lex_repl); | |
303 | SAVEDESTRUCTOR(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ | |
304 | SAVEDESTRUCTOR(restore_lex_expect, PL_tokenbuf + PL_expect); | |
305 | ||
306 | PL_lex_state = LEX_NORMAL; | |
307 | PL_lex_defer = 0; | |
308 | PL_expect = XSTATE; | |
309 | PL_lex_brackets = 0; | |
310 | PL_lex_fakebrack = 0; | |
311 | New(899, PL_lex_brackstack, 120, char); | |
312 | New(899, PL_lex_casestack, 12, char); | |
313 | SAVEFREEPV(PL_lex_brackstack); | |
314 | SAVEFREEPV(PL_lex_casestack); | |
315 | PL_lex_casemods = 0; | |
316 | *PL_lex_casestack = '\0'; | |
317 | PL_lex_dojoin = 0; | |
318 | PL_lex_starts = 0; | |
319 | PL_lex_stuff = Nullsv; | |
320 | PL_lex_repl = Nullsv; | |
321 | PL_lex_inpat = 0; | |
322 | PL_lex_inwhat = 0; | |
323 | PL_linestr = line; | |
324 | if (SvREADONLY(PL_linestr)) | |
325 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
326 | s = SvPV(PL_linestr, len); | |
8990e307 | 327 | if (len && s[len-1] != ';') { |
3280af22 NIS |
328 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
329 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
330 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 331 | } |
3280af22 NIS |
332 | SvTEMP_off(PL_linestr); |
333 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
334 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
335 | SvREFCNT_dec(PL_rs); | |
336 | PL_rs = newSVpv("\n", 1); | |
337 | PL_rsfp = 0; | |
79072805 | 338 | } |
a687059c | 339 | |
463ee0b2 | 340 | void |
8ac85365 | 341 | lex_end(void) |
463ee0b2 | 342 | { |
3280af22 | 343 | PL_doextract = FALSE; |
463ee0b2 LW |
344 | } |
345 | ||
76e3520e | 346 | STATIC void |
8ac85365 | 347 | restore_rsfp(void *f) |
6d5fb7e3 | 348 | { |
760ac839 | 349 | PerlIO *fp = (PerlIO*)f; |
6d5fb7e3 | 350 | |
3280af22 NIS |
351 | if (PL_rsfp == PerlIO_stdin()) |
352 | PerlIO_clearerr(PL_rsfp); | |
353 | else if (PL_rsfp && (PL_rsfp != fp)) | |
354 | PerlIO_close(PL_rsfp); | |
355 | PL_rsfp = fp; | |
6d5fb7e3 CS |
356 | } |
357 | ||
76e3520e | 358 | STATIC void |
7fae4e64 | 359 | restore_expect(void *e) |
49d8d3a1 MB |
360 | { |
361 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 362 | PL_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
363 | } |
364 | ||
837485b6 | 365 | STATIC void |
7fae4e64 | 366 | restore_lex_expect(void *e) |
49d8d3a1 MB |
367 | { |
368 | /* a safe way to store a small integer in a pointer */ | |
3280af22 | 369 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); |
49d8d3a1 MB |
370 | } |
371 | ||
837485b6 | 372 | STATIC void |
8ac85365 | 373 | incline(char *s) |
463ee0b2 | 374 | { |
0f15f207 | 375 | dTHR; |
463ee0b2 LW |
376 | char *t; |
377 | char *n; | |
378 | char ch; | |
379 | int sawline = 0; | |
380 | ||
3280af22 | 381 | PL_curcop->cop_line++; |
463ee0b2 LW |
382 | if (*s++ != '#') |
383 | return; | |
384 | while (*s == ' ' || *s == '\t') s++; | |
385 | if (strnEQ(s, "line ", 5)) { | |
386 | s += 5; | |
387 | sawline = 1; | |
388 | } | |
389 | if (!isDIGIT(*s)) | |
390 | return; | |
391 | n = s; | |
392 | while (isDIGIT(*s)) | |
393 | s++; | |
394 | while (*s == ' ' || *s == '\t') | |
395 | s++; | |
396 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
397 | s++; | |
398 | else { | |
399 | if (!sawline) | |
400 | return; /* false alarm */ | |
401 | for (t = s; !isSPACE(*t); t++) ; | |
402 | } | |
403 | ch = *t; | |
404 | *t = '\0'; | |
405 | if (t - s > 0) | |
3280af22 | 406 | PL_curcop->cop_filegv = gv_fetchfile(s); |
463ee0b2 | 407 | else |
3280af22 | 408 | PL_curcop->cop_filegv = gv_fetchfile(PL_origfilename); |
463ee0b2 | 409 | *t = ch; |
3280af22 | 410 | PL_curcop->cop_line = atoi(n)-1; |
463ee0b2 LW |
411 | } |
412 | ||
76e3520e | 413 | STATIC char * |
8ac85365 | 414 | skipspace(register char *s) |
a687059c | 415 | { |
11343788 | 416 | dTHR; |
3280af22 NIS |
417 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
418 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
419 | s++; |
420 | return s; | |
421 | } | |
422 | for (;;) { | |
fd049845 | 423 | STRLEN prevlen; |
3280af22 | 424 | while (s < PL_bufend && isSPACE(*s)) |
463ee0b2 | 425 | s++; |
3280af22 NIS |
426 | if (s < PL_bufend && *s == '#') { |
427 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 428 | s++; |
3280af22 | 429 | if (s < PL_bufend) |
463ee0b2 LW |
430 | s++; |
431 | } | |
3280af22 | 432 | if (s < PL_bufend || !PL_rsfp || PL_lex_state != LEX_NORMAL) |
463ee0b2 | 433 | return s; |
3280af22 NIS |
434 | if ((s = filter_gets(PL_linestr, PL_rsfp, (prevlen = SvCUR(PL_linestr)))) == Nullch) { |
435 | if (PL_minus_n || PL_minus_p) { | |
436 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
437 | ";}continue{print or die qq(-p destination: $!\\n)" : |
438 | ""); | |
3280af22 NIS |
439 | sv_catpv(PL_linestr,";}"); |
440 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
441 | } |
442 | else | |
3280af22 NIS |
443 | sv_setpv(PL_linestr,";"); |
444 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
445 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
446 | if (PL_preprocess && !PL_in_eval) | |
447 | (void)PerlProc_pclose(PL_rsfp); | |
448 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
449 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 450 | else |
3280af22 NIS |
451 | (void)PerlIO_close(PL_rsfp); |
452 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
453 | return s; |
454 | } | |
3280af22 NIS |
455 | PL_linestart = PL_bufptr = s + prevlen; |
456 | PL_bufend = s + SvCUR(PL_linestr); | |
457 | s = PL_bufptr; | |
a0d0e21e | 458 | incline(s); |
3280af22 | 459 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
460 | SV *sv = NEWSV(85,0); |
461 | ||
462 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
463 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
464 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
8990e307 | 465 | } |
463ee0b2 | 466 | } |
a687059c | 467 | } |
378cc40b | 468 | |
76e3520e | 469 | STATIC void |
8ac85365 | 470 | check_uni(void) { |
2f3197b3 LW |
471 | char *s; |
472 | char ch; | |
a0d0e21e | 473 | char *t; |
2f3197b3 | 474 | |
3280af22 | 475 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 476 | return; |
3280af22 NIS |
477 | while (isSPACE(*PL_last_uni)) |
478 | PL_last_uni++; | |
479 | for (s = PL_last_uni; isALNUM(*s) || *s == '-'; s++) ; | |
480 | if ((t = strchr(s, '(')) && t < PL_bufptr) | |
a0d0e21e | 481 | return; |
2f3197b3 LW |
482 | ch = *s; |
483 | *s = '\0'; | |
3280af22 | 484 | warn("Warning: Use of \"%s\" without parens is ambiguous", PL_last_uni); |
2f3197b3 LW |
485 | *s = ch; |
486 | } | |
487 | ||
ffed7fef LW |
488 | #ifdef CRIPPLED_CC |
489 | ||
490 | #undef UNI | |
ffed7fef | 491 | #define UNI(f) return uni(f,s) |
ffed7fef | 492 | |
76e3520e | 493 | STATIC int |
8ac85365 | 494 | uni(I32 f, char *s) |
ffed7fef LW |
495 | { |
496 | yylval.ival = f; | |
3280af22 NIS |
497 | PL_expect = XTERM; |
498 | PL_bufptr = s; | |
8f872242 NIS |
499 | PL_last_uni = PL_oldbufptr; |
500 | PL_last_lop_op = f; | |
ffed7fef LW |
501 | if (*s == '(') |
502 | return FUNC1; | |
503 | s = skipspace(s); | |
504 | if (*s == '(') | |
505 | return FUNC1; | |
506 | else | |
507 | return UNIOP; | |
508 | } | |
509 | ||
a0d0e21e LW |
510 | #endif /* CRIPPLED_CC */ |
511 | ||
512 | #define LOP(f,x) return lop(f,x,s) | |
513 | ||
76e3520e | 514 | STATIC I32 |
0fa19009 | 515 | lop(I32 f, expectation x, char *s) |
ffed7fef | 516 | { |
0f15f207 | 517 | dTHR; |
79072805 | 518 | yylval.ival = f; |
35c8bce7 | 519 | CLINE; |
3280af22 NIS |
520 | PL_expect = x; |
521 | PL_bufptr = s; | |
522 | PL_last_lop = PL_oldbufptr; | |
523 | PL_last_lop_op = f; | |
524 | if (PL_nexttoke) | |
a0d0e21e | 525 | return LSTOP; |
79072805 LW |
526 | if (*s == '(') |
527 | return FUNC; | |
528 | s = skipspace(s); | |
529 | if (*s == '(') | |
530 | return FUNC; | |
531 | else | |
532 | return LSTOP; | |
533 | } | |
534 | ||
76e3520e | 535 | STATIC void |
8ac85365 | 536 | force_next(I32 type) |
79072805 | 537 | { |
3280af22 NIS |
538 | PL_nexttype[PL_nexttoke] = type; |
539 | PL_nexttoke++; | |
540 | if (PL_lex_state != LEX_KNOWNEXT) { | |
541 | PL_lex_defer = PL_lex_state; | |
542 | PL_lex_expect = PL_expect; | |
543 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
544 | } |
545 | } | |
546 | ||
76e3520e | 547 | STATIC char * |
15f0808c | 548 | force_word(register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 549 | { |
463ee0b2 LW |
550 | register char *s; |
551 | STRLEN len; | |
552 | ||
553 | start = skipspace(start); | |
554 | s = start; | |
a0d0e21e LW |
555 | if (isIDFIRST(*s) || |
556 | (allow_pack && *s == ':') || | |
15f0808c | 557 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 558 | { |
3280af22 NIS |
559 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
560 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
561 | return start; |
562 | if (token == METHOD) { | |
563 | s = skipspace(s); | |
564 | if (*s == '(') | |
3280af22 | 565 | PL_expect = XTERM; |
463ee0b2 | 566 | else { |
3280af22 | 567 | PL_expect = XOPERATOR; |
463ee0b2 LW |
568 | force_next(')'); |
569 | force_next('('); | |
570 | } | |
79072805 | 571 | } |
3280af22 NIS |
572 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
573 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
574 | force_next(token); |
575 | } | |
576 | return s; | |
577 | } | |
578 | ||
76e3520e | 579 | STATIC void |
8ac85365 | 580 | force_ident(register char *s, int kind) |
79072805 LW |
581 | { |
582 | if (s && *s) { | |
11343788 | 583 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 584 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 585 | force_next(WORD); |
748a9306 | 586 | if (kind) { |
e858de61 | 587 | dTHR; /* just for in_eval */ |
11343788 | 588 | o->op_private = OPpCONST_ENTERED; |
55497cff | 589 | /* XXX see note in pp_entereval() for why we forgo typo |
590 | warnings if the symbol must be introduced in an eval. | |
591 | GSAR 96-10-12 */ | |
3280af22 | 592 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
593 | kind == '$' ? SVt_PV : |
594 | kind == '@' ? SVt_PVAV : | |
595 | kind == '%' ? SVt_PVHV : | |
596 | SVt_PVGV | |
597 | ); | |
748a9306 | 598 | } |
79072805 LW |
599 | } |
600 | } | |
601 | ||
76e3520e | 602 | STATIC char * |
8ac85365 | 603 | force_version(char *s) |
89bfa8cd | 604 | { |
605 | OP *version = Nullop; | |
606 | ||
607 | s = skipspace(s); | |
608 | ||
609 | /* default VERSION number -- GBARR */ | |
610 | ||
611 | if(isDIGIT(*s)) { | |
612 | char *d; | |
613 | int c; | |
55497cff | 614 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 615 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
616 | s = scan_num(s); | |
617 | /* real VERSION number -- GBARR */ | |
618 | version = yylval.opval; | |
619 | } | |
620 | } | |
621 | ||
622 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 623 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 624 | force_next(WORD); |
625 | ||
626 | return (s); | |
627 | } | |
628 | ||
76e3520e GS |
629 | STATIC SV * |
630 | tokeq(SV *sv) | |
79072805 LW |
631 | { |
632 | register char *s; | |
633 | register char *send; | |
634 | register char *d; | |
b3ac6de7 IZ |
635 | STRLEN len = 0; |
636 | SV *pv = sv; | |
79072805 LW |
637 | |
638 | if (!SvLEN(sv)) | |
b3ac6de7 | 639 | goto finish; |
79072805 | 640 | |
a0d0e21e | 641 | s = SvPV_force(sv, len); |
748a9306 | 642 | if (SvIVX(sv) == -1) |
b3ac6de7 | 643 | goto finish; |
463ee0b2 | 644 | send = s + len; |
79072805 LW |
645 | while (s < send && *s != '\\') |
646 | s++; | |
647 | if (s == send) | |
b3ac6de7 | 648 | goto finish; |
79072805 | 649 | d = s; |
3280af22 | 650 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 651 | pv = sv_2mortal(newSVpv(SvPVX(pv), len)); |
79072805 LW |
652 | while (s < send) { |
653 | if (*s == '\\') { | |
a0d0e21e | 654 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
655 | s++; /* all that, just for this */ |
656 | } | |
657 | *d++ = *s++; | |
658 | } | |
659 | *d = '\0'; | |
463ee0b2 | 660 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 661 | finish: |
3280af22 | 662 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 663 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
664 | return sv; |
665 | } | |
666 | ||
76e3520e | 667 | STATIC I32 |
8ac85365 | 668 | sublex_start(void) |
79072805 LW |
669 | { |
670 | register I32 op_type = yylval.ival; | |
79072805 LW |
671 | |
672 | if (op_type == OP_NULL) { | |
3280af22 NIS |
673 | yylval.opval = PL_lex_op; |
674 | PL_lex_op = Nullop; | |
79072805 LW |
675 | return THING; |
676 | } | |
677 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 678 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
679 | |
680 | if (SvTYPE(sv) == SVt_PVIV) { | |
681 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
682 | STRLEN len; | |
683 | char *p; | |
684 | SV *nsv; | |
685 | ||
686 | p = SvPV(sv, len); | |
687 | nsv = newSVpv(p, len); | |
688 | SvREFCNT_dec(sv); | |
689 | sv = nsv; | |
690 | } | |
691 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 692 | PL_lex_stuff = Nullsv; |
79072805 LW |
693 | return THING; |
694 | } | |
695 | ||
3280af22 NIS |
696 | PL_sublex_info.super_state = PL_lex_state; |
697 | PL_sublex_info.sub_inwhat = op_type; | |
698 | PL_sublex_info.sub_op = PL_lex_op; | |
699 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 700 | |
3280af22 NIS |
701 | PL_expect = XTERM; |
702 | if (PL_lex_op) { | |
703 | yylval.opval = PL_lex_op; | |
704 | PL_lex_op = Nullop; | |
55497cff | 705 | return PMFUNC; |
706 | } | |
707 | else | |
708 | return FUNC; | |
709 | } | |
710 | ||
76e3520e | 711 | STATIC I32 |
8ac85365 | 712 | sublex_push(void) |
55497cff | 713 | { |
0f15f207 | 714 | dTHR; |
f46d017c | 715 | ENTER; |
55497cff | 716 | |
3280af22 NIS |
717 | PL_lex_state = PL_sublex_info.super_state; |
718 | SAVEI32(PL_lex_dojoin); | |
719 | SAVEI32(PL_lex_brackets); | |
720 | SAVEI32(PL_lex_fakebrack); | |
721 | SAVEI32(PL_lex_casemods); | |
722 | SAVEI32(PL_lex_starts); | |
723 | SAVEI32(PL_lex_state); | |
724 | SAVESPTR(PL_lex_inpat); | |
725 | SAVEI32(PL_lex_inwhat); | |
726 | SAVEI16(PL_curcop->cop_line); | |
727 | SAVEPPTR(PL_bufptr); | |
728 | SAVEPPTR(PL_oldbufptr); | |
729 | SAVEPPTR(PL_oldoldbufptr); | |
730 | SAVEPPTR(PL_linestart); | |
731 | SAVESPTR(PL_linestr); | |
732 | SAVEPPTR(PL_lex_brackstack); | |
733 | SAVEPPTR(PL_lex_casestack); | |
734 | ||
735 | PL_linestr = PL_lex_stuff; | |
736 | PL_lex_stuff = Nullsv; | |
737 | ||
738 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
739 | PL_bufend += SvCUR(PL_linestr); | |
740 | SAVEFREESV(PL_linestr); | |
741 | ||
742 | PL_lex_dojoin = FALSE; | |
743 | PL_lex_brackets = 0; | |
744 | PL_lex_fakebrack = 0; | |
745 | New(899, PL_lex_brackstack, 120, char); | |
746 | New(899, PL_lex_casestack, 12, char); | |
747 | SAVEFREEPV(PL_lex_brackstack); | |
748 | SAVEFREEPV(PL_lex_casestack); | |
749 | PL_lex_casemods = 0; | |
750 | *PL_lex_casestack = '\0'; | |
751 | PL_lex_starts = 0; | |
752 | PL_lex_state = LEX_INTERPCONCAT; | |
753 | PL_curcop->cop_line = PL_multi_start; | |
754 | ||
755 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
756 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
757 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 758 | else |
3280af22 | 759 | PL_lex_inpat = Nullop; |
79072805 | 760 | |
55497cff | 761 | return '('; |
79072805 LW |
762 | } |
763 | ||
76e3520e | 764 | STATIC I32 |
8ac85365 | 765 | sublex_done(void) |
79072805 | 766 | { |
3280af22 NIS |
767 | if (!PL_lex_starts++) { |
768 | PL_expect = XOPERATOR; | |
93a17b20 | 769 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv("",0)); |
79072805 LW |
770 | return THING; |
771 | } | |
772 | ||
3280af22 NIS |
773 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
774 | PL_lex_state = LEX_INTERPCASEMOD; | |
79072805 LW |
775 | return yylex(); |
776 | } | |
777 | ||
79072805 | 778 | /* Is there a right-hand side to take care of? */ |
3280af22 NIS |
779 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
780 | PL_linestr = PL_lex_repl; | |
781 | PL_lex_inpat = 0; | |
782 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
783 | PL_bufend += SvCUR(PL_linestr); | |
784 | SAVEFREESV(PL_linestr); | |
785 | PL_lex_dojoin = FALSE; | |
786 | PL_lex_brackets = 0; | |
787 | PL_lex_fakebrack = 0; | |
788 | PL_lex_casemods = 0; | |
789 | *PL_lex_casestack = '\0'; | |
790 | PL_lex_starts = 0; | |
791 | if (SvCOMPILED(PL_lex_repl)) { | |
792 | PL_lex_state = LEX_INTERPNORMAL; | |
793 | PL_lex_starts++; | |
79072805 LW |
794 | } |
795 | else | |
3280af22 NIS |
796 | PL_lex_state = LEX_INTERPCONCAT; |
797 | PL_lex_repl = Nullsv; | |
79072805 | 798 | return ','; |
ffed7fef LW |
799 | } |
800 | else { | |
f46d017c | 801 | LEAVE; |
3280af22 NIS |
802 | PL_bufend = SvPVX(PL_linestr); |
803 | PL_bufend += SvCUR(PL_linestr); | |
804 | PL_expect = XOPERATOR; | |
79072805 | 805 | return ')'; |
ffed7fef LW |
806 | } |
807 | } | |
808 | ||
02aa26ce NT |
809 | /* |
810 | scan_const | |
811 | ||
812 | Extracts a pattern, double-quoted string, or transliteration. This | |
813 | is terrifying code. | |
814 | ||
3280af22 NIS |
815 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
816 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
817 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
818 | ||
9b599b2a GS |
819 | Returns a pointer to the character scanned up to. Iff this is |
820 | advanced from the start pointer supplied (ie if anything was | |
821 | successfully parsed), will leave an OP for the substring scanned | |
822 | in yylval. Caller must intuit reason for not parsing further | |
823 | by looking at the next characters herself. | |
824 | ||
02aa26ce NT |
825 | In patterns: |
826 | backslashes: | |
827 | double-quoted style: \r and \n | |
828 | regexp special ones: \D \s | |
829 | constants: \x3 | |
830 | backrefs: \1 (deprecated in substitution replacements) | |
831 | case and quoting: \U \Q \E | |
832 | stops on @ and $, but not for $ as tail anchor | |
833 | ||
834 | In transliterations: | |
835 | characters are VERY literal, except for - not at the start or end | |
836 | of the string, which indicates a range. scan_const expands the | |
837 | range to the full set of intermediate characters. | |
838 | ||
839 | In double-quoted strings: | |
840 | backslashes: | |
841 | double-quoted style: \r and \n | |
842 | constants: \x3 | |
843 | backrefs: \1 (deprecated) | |
844 | case and quoting: \U \Q \E | |
845 | stops on @ and $ | |
846 | ||
847 | scan_const does *not* construct ops to handle interpolated strings. | |
848 | It stops processing as soon as it finds an embedded $ or @ variable | |
849 | and leaves it to the caller to work out what's going on. | |
850 | ||
851 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
852 | ||
853 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
854 | it's a tail anchor if $ is the last thing in the string, or if it's | |
855 | followed by one of ")| \n\t" | |
856 | ||
857 | \1 (backreferences) are turned into $1 | |
858 | ||
859 | The structure of the code is | |
860 | while (there's a character to process) { | |
861 | handle transliteration ranges | |
862 | skip regexp comments | |
863 | skip # initiated comments in //x patterns | |
864 | check for embedded @foo | |
865 | check for embedded scalars | |
866 | if (backslash) { | |
867 | leave intact backslashes from leave (below) | |
868 | deprecate \1 in strings and sub replacements | |
869 | handle string-changing backslashes \l \U \Q \E, etc. | |
870 | switch (what was escaped) { | |
871 | handle - in a transliteration (becomes a literal -) | |
872 | handle \132 octal characters | |
873 | handle 0x15 hex characters | |
874 | handle \cV (control V) | |
875 | handle printf backslashes (\f, \r, \n, etc) | |
876 | } (end switch) | |
877 | } (end if backslash) | |
878 | } (end while character to read) | |
879 | ||
880 | */ | |
881 | ||
76e3520e | 882 | STATIC char * |
8ac85365 | 883 | scan_const(char *start) |
79072805 | 884 | { |
3280af22 | 885 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
886 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
887 | register char *s = start; /* start of the constant */ | |
888 | register char *d = SvPVX(sv); /* destination for copies */ | |
889 | bool dorange = FALSE; /* are we in a translit range? */ | |
890 | I32 len; /* ? */ | |
a0ed51b3 LW |
891 | I32 utf = PL_lex_inwhat == OP_TRANS |
892 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
893 | : UTF; | |
894 | I32 thisutf = PL_lex_inwhat == OP_TRANS | |
895 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
896 | : UTF; | |
02aa26ce | 897 | |
9b599b2a | 898 | /* leaveit is the set of acceptably-backslashed characters */ |
72aaf631 | 899 | char *leaveit = |
3280af22 | 900 | PL_lex_inpat |
a0ed51b3 | 901 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 902 | : ""; |
79072805 LW |
903 | |
904 | while (s < send || dorange) { | |
02aa26ce | 905 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 906 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 907 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 908 | if (dorange) { |
02aa26ce | 909 | I32 i; /* current expanded character */ |
8ada0baa | 910 | I32 min; /* first character in range */ |
02aa26ce NT |
911 | I32 max; /* last character in range */ |
912 | ||
913 | i = d - SvPVX(sv); /* remember current offset */ | |
914 | SvGROW(sv, SvLEN(sv) + 256); /* expand the sv -- there'll never be more'n 256 chars in a range for it to grow by */ | |
915 | d = SvPVX(sv) + i; /* restore d after the grow potentially has changed the ptr */ | |
916 | d -= 2; /* eat the first char and the - */ | |
917 | ||
8ada0baa JH |
918 | min = (U8)*d; /* first char in range */ |
919 | max = (U8)d[1]; /* last char in range */ | |
920 | ||
921 | #ifndef ASCIIish | |
922 | if ((isLOWER(min) && isLOWER(max)) || | |
923 | (isUPPER(min) && isUPPER(max))) { | |
924 | if (isLOWER(min)) { | |
925 | for (i = min; i <= max; i++) | |
926 | if (isLOWER(i)) | |
927 | *d++ = i; | |
928 | } else { | |
929 | for (i = min; i <= max; i++) | |
930 | if (isUPPER(i)) | |
931 | *d++ = i; | |
932 | } | |
933 | } | |
934 | else | |
935 | #endif | |
936 | for (i = min; i <= max; i++) | |
937 | *d++ = i; | |
02aa26ce NT |
938 | |
939 | /* mark the range as done, and continue */ | |
79072805 LW |
940 | dorange = FALSE; |
941 | continue; | |
942 | } | |
02aa26ce NT |
943 | |
944 | /* range begins (ignore - as first or last char) */ | |
79072805 | 945 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 946 | if (utf) { |
a176fa2a | 947 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
948 | s++; |
949 | continue; | |
950 | } | |
79072805 LW |
951 | dorange = TRUE; |
952 | s++; | |
953 | } | |
954 | } | |
02aa26ce NT |
955 | |
956 | /* if we get here, we're not doing a transliteration */ | |
957 | ||
0f5d15d6 IZ |
958 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
959 | except for the last char, which will be done separately. */ | |
3280af22 | 960 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
961 | if (s[2] == '#') { |
962 | while (s < send && *s != ')') | |
963 | *d++ = *s++; | |
0f5d15d6 IZ |
964 | } else if (s[2] == '{' |
965 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 966 | I32 count = 1; |
0f5d15d6 | 967 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
968 | char c; |
969 | ||
d9f97599 GS |
970 | while (count && (c = *regparse)) { |
971 | if (c == '\\' && regparse[1]) | |
972 | regparse++; | |
cc6b7395 IZ |
973 | else if (c == '{') |
974 | count++; | |
975 | else if (c == '}') | |
976 | count--; | |
d9f97599 | 977 | regparse++; |
cc6b7395 | 978 | } |
0f5d15d6 | 979 | if (*regparse != ')') |
cc6b7395 | 980 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
0f5d15d6 | 981 | while (s < regparse) |
cc6b7395 IZ |
982 | *d++ = *s++; |
983 | } | |
748a9306 | 984 | } |
02aa26ce NT |
985 | |
986 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
987 | else if (*s == '#' && PL_lex_inpat && |
988 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
989 | while (s+1 < send && *s != '\n') |
990 | *d++ = *s++; | |
991 | } | |
02aa26ce NT |
992 | |
993 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
a0d0e21e | 994 | else if (*s == '@' && s[1] && (isALNUM(s[1]) || strchr(":'{$", s[1]))) |
79072805 | 995 | break; |
02aa26ce NT |
996 | |
997 | /* check for embedded scalars. only stop if we're sure it's a | |
998 | variable. | |
999 | */ | |
79072805 | 1000 | else if (*s == '$') { |
3280af22 | 1001 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1002 | break; |
c277df42 | 1003 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1004 | break; /* in regexp, $ might be tail anchor */ |
1005 | } | |
02aa26ce | 1006 | |
a0ed51b3 LW |
1007 | /* (now in tr/// code again) */ |
1008 | ||
d008e5eb GS |
1009 | if (*s & 0x80 && thisutf) { |
1010 | dTHR; /* only for ckWARN */ | |
1011 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1012 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1013 | if (len) { |
1014 | while (len--) | |
1015 | *d++ = *s++; | |
1016 | continue; | |
1017 | } | |
a0ed51b3 LW |
1018 | } |
1019 | } | |
1020 | ||
02aa26ce | 1021 | /* backslashes */ |
79072805 LW |
1022 | if (*s == '\\' && s+1 < send) { |
1023 | s++; | |
02aa26ce NT |
1024 | |
1025 | /* some backslashes we leave behind */ | |
72aaf631 | 1026 | if (*s && strchr(leaveit, *s)) { |
79072805 LW |
1027 | *d++ = '\\'; |
1028 | *d++ = *s++; | |
1029 | continue; | |
1030 | } | |
02aa26ce NT |
1031 | |
1032 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1033 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1034 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1035 | { |
d008e5eb | 1036 | dTHR; /* only for ckWARN */ |
599cee73 PM |
1037 | if (ckWARN(WARN_SYNTAX)) |
1038 | warner(WARN_SYNTAX, "\\%c better written as $%c", *s, *s); | |
79072805 LW |
1039 | *--s = '$'; |
1040 | break; | |
1041 | } | |
02aa26ce NT |
1042 | |
1043 | /* string-change backslash escapes */ | |
3280af22 | 1044 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1045 | --s; |
1046 | break; | |
1047 | } | |
02aa26ce NT |
1048 | |
1049 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1050 | switch (*s) { |
02aa26ce NT |
1051 | |
1052 | /* quoted - in transliterations */ | |
79072805 | 1053 | case '-': |
3280af22 | 1054 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1055 | *d++ = *s++; |
1056 | continue; | |
1057 | } | |
1058 | /* FALL THROUGH */ | |
02aa26ce | 1059 | /* default action is to copy the quoted character */ |
79072805 LW |
1060 | default: |
1061 | *d++ = *s++; | |
1062 | continue; | |
02aa26ce NT |
1063 | |
1064 | /* \132 indicates an octal constant */ | |
79072805 LW |
1065 | case '0': case '1': case '2': case '3': |
1066 | case '4': case '5': case '6': case '7': | |
1067 | *d++ = scan_oct(s, 3, &len); | |
1068 | s += len; | |
1069 | continue; | |
02aa26ce NT |
1070 | |
1071 | /* \x24 indicates a hex constant */ | |
79072805 | 1072 | case 'x': |
a0ed51b3 LW |
1073 | ++s; |
1074 | if (*s == '{') { | |
1075 | char* e = strchr(s, '}'); | |
1076 | ||
1077 | if (!e) | |
1078 | yyerror("Missing right brace on \\x{}"); | |
d008e5eb GS |
1079 | if (!utf) { |
1080 | dTHR; | |
1081 | if (ckWARN(WARN_UTF8)) | |
1082 | warner(WARN_UTF8, | |
1083 | "Use of \\x{} without utf8 declaration"); | |
1084 | } | |
a0ed51b3 | 1085 | /* note: utf always shorter than hex */ |
dfe13c55 GS |
1086 | d = (char*)uv_to_utf8((U8*)d, |
1087 | scan_hex(s + 1, e - s - 1, &len)); | |
a0ed51b3 LW |
1088 | s = e + 1; |
1089 | ||
1090 | } | |
1091 | else { | |
1092 | UV uv = (UV)scan_hex(s, 2, &len); | |
1093 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1094 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1095 | { | |
dfe13c55 | 1096 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1097 | } |
1098 | else { | |
d008e5eb GS |
1099 | if (uv >= 127 && UTF) { |
1100 | dTHR; | |
1101 | if (ckWARN(WARN_UTF8)) | |
1102 | warner(WARN_UTF8, | |
1103 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", | |
1104 | len,s,len,s); | |
1105 | } | |
a0ed51b3 LW |
1106 | *d++ = (char)uv; |
1107 | } | |
1108 | s += len; | |
1109 | } | |
79072805 | 1110 | continue; |
02aa26ce NT |
1111 | |
1112 | /* \c is a control character */ | |
79072805 LW |
1113 | case 'c': |
1114 | s++; | |
9d116dd7 JH |
1115 | #ifdef EBCDIC |
1116 | *d = *s++; | |
1117 | if (isLOWER(*d)) | |
1118 | *d = toUPPER(*d); | |
1119 | *d++ = toCTRL(*d); | |
1120 | #else | |
bbce6d69 | 1121 | len = *s++; |
1122 | *d++ = toCTRL(len); | |
9d116dd7 | 1123 | #endif |
79072805 | 1124 | continue; |
02aa26ce NT |
1125 | |
1126 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1127 | case 'b': |
1128 | *d++ = '\b'; | |
1129 | break; | |
1130 | case 'n': | |
1131 | *d++ = '\n'; | |
1132 | break; | |
1133 | case 'r': | |
1134 | *d++ = '\r'; | |
1135 | break; | |
1136 | case 'f': | |
1137 | *d++ = '\f'; | |
1138 | break; | |
1139 | case 't': | |
1140 | *d++ = '\t'; | |
1141 | break; | |
1142 | case 'e': | |
1143 | *d++ = '\033'; | |
1144 | break; | |
1145 | case 'a': | |
1146 | *d++ = '\007'; | |
1147 | break; | |
02aa26ce NT |
1148 | } /* end switch */ |
1149 | ||
79072805 LW |
1150 | s++; |
1151 | continue; | |
02aa26ce NT |
1152 | } /* end if (backslash) */ |
1153 | ||
79072805 | 1154 | *d++ = *s++; |
02aa26ce NT |
1155 | } /* while loop to process each character */ |
1156 | ||
1157 | /* terminate the string and set up the sv */ | |
79072805 | 1158 | *d = '\0'; |
463ee0b2 | 1159 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1160 | SvPOK_on(sv); |
1161 | ||
02aa26ce | 1162 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1163 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1164 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1165 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1166 | } |
02aa26ce | 1167 | |
9b599b2a | 1168 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1169 | if (s > PL_bufptr) { |
1170 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1171 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1172 | sv, Nullsv, |
3280af22 | 1173 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1174 | ? "tr" |
3280af22 | 1175 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1176 | ? "s" |
1177 | : "qq"))); | |
79072805 | 1178 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1179 | } else |
8990e307 | 1180 | SvREFCNT_dec(sv); |
79072805 LW |
1181 | return s; |
1182 | } | |
1183 | ||
1184 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ | |
76e3520e | 1185 | STATIC int |
8ac85365 | 1186 | intuit_more(register char *s) |
79072805 | 1187 | { |
3280af22 | 1188 | if (PL_lex_brackets) |
79072805 LW |
1189 | return TRUE; |
1190 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1191 | return TRUE; | |
1192 | if (*s != '{' && *s != '[') | |
1193 | return FALSE; | |
3280af22 | 1194 | if (!PL_lex_inpat) |
79072805 LW |
1195 | return TRUE; |
1196 | ||
1197 | /* In a pattern, so maybe we have {n,m}. */ | |
1198 | if (*s == '{') { | |
1199 | s++; | |
1200 | if (!isDIGIT(*s)) | |
1201 | return TRUE; | |
1202 | while (isDIGIT(*s)) | |
1203 | s++; | |
1204 | if (*s == ',') | |
1205 | s++; | |
1206 | while (isDIGIT(*s)) | |
1207 | s++; | |
1208 | if (*s == '}') | |
1209 | return FALSE; | |
1210 | return TRUE; | |
1211 | ||
1212 | } | |
1213 | ||
1214 | /* On the other hand, maybe we have a character class */ | |
1215 | ||
1216 | s++; | |
1217 | if (*s == ']' || *s == '^') | |
1218 | return FALSE; | |
1219 | else { | |
1220 | int weight = 2; /* let's weigh the evidence */ | |
1221 | char seen[256]; | |
f27ffc4a | 1222 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1223 | char *send = strchr(s,']'); |
3280af22 | 1224 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1225 | |
1226 | if (!send) /* has to be an expression */ | |
1227 | return TRUE; | |
1228 | ||
1229 | Zero(seen,256,char); | |
1230 | if (*s == '$') | |
1231 | weight -= 3; | |
1232 | else if (isDIGIT(*s)) { | |
1233 | if (s[1] != ']') { | |
1234 | if (isDIGIT(s[1]) && s[2] == ']') | |
1235 | weight -= 10; | |
1236 | } | |
1237 | else | |
1238 | weight -= 100; | |
1239 | } | |
1240 | for (; s < send; s++) { | |
1241 | last_un_char = un_char; | |
1242 | un_char = (unsigned char)*s; | |
1243 | switch (*s) { | |
1244 | case '@': | |
1245 | case '&': | |
1246 | case '$': | |
1247 | weight -= seen[un_char] * 10; | |
1248 | if (isALNUM(s[1])) { | |
8903cb82 | 1249 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1250 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1251 | weight -= 100; |
1252 | else | |
1253 | weight -= 10; | |
1254 | } | |
1255 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1256 | strchr("[#!%*<>()-=",s[1])) { |
1257 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1258 | weight -= 10; |
1259 | else | |
1260 | weight -= 1; | |
1261 | } | |
1262 | break; | |
1263 | case '\\': | |
1264 | un_char = 254; | |
1265 | if (s[1]) { | |
93a17b20 | 1266 | if (strchr("wds]",s[1])) |
79072805 LW |
1267 | weight += 100; |
1268 | else if (seen['\''] || seen['"']) | |
1269 | weight += 1; | |
93a17b20 | 1270 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1271 | weight += 40; |
1272 | else if (isDIGIT(s[1])) { | |
1273 | weight += 40; | |
1274 | while (s[1] && isDIGIT(s[1])) | |
1275 | s++; | |
1276 | } | |
1277 | } | |
1278 | else | |
1279 | weight += 100; | |
1280 | break; | |
1281 | case '-': | |
1282 | if (s[1] == '\\') | |
1283 | weight += 50; | |
93a17b20 | 1284 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1285 | weight += 30; |
93a17b20 | 1286 | if (strchr("zZ79~",s[1])) |
79072805 | 1287 | weight += 30; |
f27ffc4a GS |
1288 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1289 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1290 | break; |
1291 | default: | |
93a17b20 | 1292 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1293 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1294 | char *d = tmpbuf; | |
1295 | while (isALPHA(*s)) | |
1296 | *d++ = *s++; | |
1297 | *d = '\0'; | |
1298 | if (keyword(tmpbuf, d - tmpbuf)) | |
1299 | weight -= 150; | |
1300 | } | |
1301 | if (un_char == last_un_char + 1) | |
1302 | weight += 5; | |
1303 | weight -= seen[un_char]; | |
1304 | break; | |
1305 | } | |
1306 | seen[un_char]++; | |
1307 | } | |
1308 | if (weight >= 0) /* probably a character class */ | |
1309 | return FALSE; | |
1310 | } | |
1311 | ||
1312 | return TRUE; | |
1313 | } | |
ffed7fef | 1314 | |
76e3520e | 1315 | STATIC int |
8ac85365 | 1316 | intuit_method(char *start, GV *gv) |
a0d0e21e LW |
1317 | { |
1318 | char *s = start + (*start == '$'); | |
3280af22 | 1319 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1320 | STRLEN len; |
1321 | GV* indirgv; | |
1322 | ||
1323 | if (gv) { | |
b6c543e3 | 1324 | CV *cv; |
a0d0e21e LW |
1325 | if (GvIO(gv)) |
1326 | return 0; | |
b6c543e3 IZ |
1327 | if ((cv = GvCVu(gv))) { |
1328 | char *proto = SvPVX(cv); | |
1329 | if (proto) { | |
1330 | if (*proto == ';') | |
1331 | proto++; | |
1332 | if (*proto == '*') | |
1333 | return 0; | |
1334 | } | |
1335 | } else | |
a0d0e21e LW |
1336 | gv = 0; |
1337 | } | |
8903cb82 | 1338 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
a0d0e21e | 1339 | if (*start == '$') { |
3280af22 | 1340 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1341 | return 0; |
1342 | s = skipspace(s); | |
3280af22 NIS |
1343 | PL_bufptr = start; |
1344 | PL_expect = XREF; | |
a0d0e21e LW |
1345 | return *s == '(' ? FUNCMETH : METHOD; |
1346 | } | |
1347 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1348 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1349 | len -= 2; | |
1350 | tmpbuf[len] = '\0'; | |
1351 | goto bare_package; | |
1352 | } | |
1353 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1354 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1355 | return 0; |
1356 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1357 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1358 | s = skipspace(s); |
3280af22 | 1359 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1360 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1361 | bare_package: |
3280af22 | 1362 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
c3e0f903 | 1363 | newSVpv(tmpbuf,0)); |
3280af22 NIS |
1364 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1365 | PL_expect = XTERM; | |
a0d0e21e | 1366 | force_next(WORD); |
3280af22 | 1367 | PL_bufptr = s; |
a0d0e21e LW |
1368 | return *s == '(' ? FUNCMETH : METHOD; |
1369 | } | |
1370 | } | |
1371 | return 0; | |
1372 | } | |
1373 | ||
76e3520e | 1374 | STATIC char* |
8ac85365 | 1375 | incl_perldb(void) |
a0d0e21e | 1376 | { |
3280af22 | 1377 | if (PL_perldb) { |
76e3520e | 1378 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1379 | |
1380 | if (pdb) | |
1381 | return pdb; | |
61bb5906 | 1382 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1383 | return "BEGIN { require 'perl5db.pl' }"; |
1384 | } | |
1385 | return ""; | |
1386 | } | |
1387 | ||
1388 | ||
16d20bd9 AD |
1389 | /* Encoded script support. filter_add() effectively inserts a |
1390 | * 'pre-processing' function into the current source input stream. | |
1391 | * Note that the filter function only applies to the current source file | |
1392 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1393 | * | |
1394 | * The datasv parameter (which may be NULL) can be used to pass | |
1395 | * private data to this instance of the filter. The filter function | |
1396 | * can recover the SV using the FILTER_DATA macro and use it to | |
1397 | * store private buffers and state information. | |
1398 | * | |
1399 | * The supplied datasv parameter is upgraded to a PVIO type | |
1400 | * and the IoDIRP field is used to store the function pointer. | |
1401 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for | |
1402 | * private use must be set using malloc'd pointers. | |
1403 | */ | |
1404 | static int filter_debug = 0; | |
1405 | ||
1406 | SV * | |
8ac85365 | 1407 | filter_add(filter_t funcp, SV *datasv) |
16d20bd9 AD |
1408 | { |
1409 | if (!funcp){ /* temporary handy debugging hack to be deleted */ | |
1410 | filter_debug = atoi((char*)datasv); | |
1411 | return NULL; | |
1412 | } | |
3280af22 NIS |
1413 | if (!PL_rsfp_filters) |
1414 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1415 | if (!datasv) |
8c52afec | 1416 | datasv = NEWSV(255,0); |
16d20bd9 AD |
1417 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
1418 | die("Can't upgrade filter_add data to SVt_PVIO"); | |
1419 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ | |
1420 | if (filter_debug) | |
3280af22 NIS |
1421 | warn("filter_add func %p (%s)", funcp, SvPV(datasv,PL_na)); |
1422 | av_unshift(PL_rsfp_filters, 1); | |
1423 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1424 | return(datasv); |
1425 | } | |
1426 | ||
1427 | ||
1428 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1429 | void |
8ac85365 | 1430 | filter_del(filter_t funcp) |
16d20bd9 AD |
1431 | { |
1432 | if (filter_debug) | |
ff0cee69 | 1433 | warn("filter_del func %p", funcp); |
3280af22 | 1434 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1435 | return; |
1436 | /* if filter is on top of stack (usual case) just pop it off */ | |
677ca527 | 1437 | if (IoDIRP(FILTER_DATA(AvFILLp(PL_rsfp_filters))) == (DIR*)funcp){ |
3280af22 | 1438 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1439 | |
16d20bd9 AD |
1440 | return; |
1441 | } | |
1442 | /* we need to search for the correct entry and clear it */ | |
1443 | die("filter_del can only delete in reverse order (currently)"); | |
1444 | } | |
1445 | ||
1446 | ||
1447 | /* Invoke the n'th filter function for the current rsfp. */ | |
1448 | I32 | |
8ac85365 NIS |
1449 | filter_read(int idx, SV *buf_sv, int maxlen) |
1450 | ||
1451 | ||
1452 | /* 0 = read one text line */ | |
a0d0e21e | 1453 | { |
16d20bd9 AD |
1454 | filter_t funcp; |
1455 | SV *datasv = NULL; | |
e50aee73 | 1456 | |
3280af22 | 1457 | if (!PL_rsfp_filters) |
16d20bd9 | 1458 | return -1; |
3280af22 | 1459 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1460 | /* Provide a default input filter to make life easy. */ |
1461 | /* Note that we append to the line. This is handy. */ | |
16d20bd9 AD |
1462 | if (filter_debug) |
1463 | warn("filter_read %d: from rsfp\n", idx); | |
1464 | if (maxlen) { | |
1465 | /* Want a block */ | |
1466 | int len ; | |
1467 | int old_len = SvCUR(buf_sv) ; | |
1468 | ||
1469 | /* ensure buf_sv is large enough */ | |
1470 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1471 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1472 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1473 | return -1; /* error */ |
1474 | else | |
1475 | return 0 ; /* end of file */ | |
1476 | } | |
16d20bd9 AD |
1477 | SvCUR_set(buf_sv, old_len + len) ; |
1478 | } else { | |
1479 | /* Want a line */ | |
3280af22 NIS |
1480 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1481 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1482 | return -1; /* error */ |
1483 | else | |
1484 | return 0 ; /* end of file */ | |
1485 | } | |
16d20bd9 AD |
1486 | } |
1487 | return SvCUR(buf_sv); | |
1488 | } | |
1489 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1490 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
16d20bd9 AD |
1491 | if (filter_debug) |
1492 | warn("filter_read %d: skipped (filter deleted)\n", idx); | |
1493 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ | |
1494 | } | |
1495 | /* Get function pointer hidden within datasv */ | |
1496 | funcp = (filter_t)IoDIRP(datasv); | |
1497 | if (filter_debug) | |
ff0cee69 | 1498 | warn("filter_read %d: via function %p (%s)\n", |
3280af22 | 1499 | idx, funcp, SvPV(datasv,PL_na)); |
16d20bd9 AD |
1500 | /* Call function. The function is expected to */ |
1501 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1502 | /* Return: <0:error, =0:eof, >0:not eof */ |
1d583055 | 1503 | return (*funcp)(PERL_OBJECT_THIS_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1504 | } |
1505 | ||
76e3520e GS |
1506 | STATIC char * |
1507 | filter_gets(register SV *sv, register PerlIO *fp, STRLEN append) | |
16d20bd9 | 1508 | { |
a868473f | 1509 | #ifdef WIN32FILTER |
3280af22 | 1510 | if (!PL_rsfp_filters) { |
a868473f NIS |
1511 | filter_add(win32_textfilter,NULL); |
1512 | } | |
1513 | #endif | |
3280af22 | 1514 | if (PL_rsfp_filters) { |
16d20bd9 | 1515 | |
55497cff | 1516 | if (!append) |
1517 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1518 | if (FILTER_READ(0, sv, 0) > 0) |
1519 | return ( SvPVX(sv) ) ; | |
1520 | else | |
1521 | return Nullch ; | |
1522 | } | |
9d116dd7 | 1523 | else |
fd049845 | 1524 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1525 | } |
1526 | ||
1527 | ||
748a9306 LW |
1528 | #ifdef DEBUGGING |
1529 | static char* exp_name[] = | |
a0d0e21e | 1530 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "TERMBLOCK" }; |
748a9306 | 1531 | #endif |
463ee0b2 | 1532 | |
71be2cbc | 1533 | EXT int yychar; /* last token */ |
463ee0b2 | 1534 | |
02aa26ce NT |
1535 | /* |
1536 | yylex | |
1537 | ||
1538 | Works out what to call the token just pulled out of the input | |
1539 | stream. The yacc parser takes care of taking the ops we return and | |
1540 | stitching them into a tree. | |
1541 | ||
1542 | Returns: | |
1543 | PRIVATEREF | |
1544 | ||
1545 | Structure: | |
1546 | if read an identifier | |
1547 | if we're in a my declaration | |
1548 | croak if they tried to say my($foo::bar) | |
1549 | build the ops for a my() declaration | |
1550 | if it's an access to a my() variable | |
1551 | are we in a sort block? | |
1552 | croak if my($a); $a <=> $b | |
1553 | build ops for access to a my() variable | |
1554 | if in a dq string, and they've said @foo and we can't find @foo | |
1555 | croak | |
1556 | build ops for a bareword | |
1557 | if we already built the token before, use it. | |
1558 | */ | |
1559 | ||
2f3197b3 | 1560 | int |
8ac85365 | 1561 | yylex(void) |
378cc40b | 1562 | { |
11343788 | 1563 | dTHR; |
79072805 | 1564 | register char *s; |
378cc40b | 1565 | register char *d; |
79072805 | 1566 | register I32 tmp; |
463ee0b2 | 1567 | STRLEN len; |
161b471a NIS |
1568 | GV *gv = Nullgv; |
1569 | GV **gvp = 0; | |
a687059c | 1570 | |
02aa26ce | 1571 | /* check if there's an identifier for us to look at */ |
3280af22 | 1572 | if (PL_pending_ident) { |
02aa26ce | 1573 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1574 | char pit = PL_pending_ident; |
1575 | PL_pending_ident = 0; | |
bbce6d69 | 1576 | |
02aa26ce NT |
1577 | /* if we're in a my(), we can't allow dynamics here. |
1578 | $foo'bar has already been turned into $foo::bar, so | |
1579 | just check for colons. | |
1580 | ||
1581 | if it's a legal name, the OP is a PADANY. | |
1582 | */ | |
3280af22 NIS |
1583 | if (PL_in_my) { |
1584 | if (strchr(PL_tokenbuf,':')) | |
1585 | croak(no_myglob,PL_tokenbuf); | |
02aa26ce | 1586 | |
bbce6d69 | 1587 | yylval.opval = newOP(OP_PADANY, 0); |
3280af22 | 1588 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); |
bbce6d69 | 1589 | return PRIVATEREF; |
1590 | } | |
1591 | ||
02aa26ce NT |
1592 | /* |
1593 | build the ops for accesses to a my() variable. | |
1594 | ||
1595 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1596 | then used in a comparison. This catches most, but not | |
1597 | all cases. For instance, it catches | |
1598 | sort { my($a); $a <=> $b } | |
1599 | but not | |
1600 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1601 | (although why you'd do that is anyone's guess). | |
1602 | */ | |
1603 | ||
3280af22 | 1604 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1605 | #ifdef USE_THREADS |
54b9620d | 1606 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1607 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1608 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1609 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1610 | { |
2faa37cc | 1611 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1612 | yylval.opval->op_targ = tmp; |
1613 | return PRIVATEREF; | |
1614 | } | |
1615 | #endif /* USE_THREADS */ | |
3280af22 | 1616 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
02aa26ce | 1617 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
1618 | if (PL_last_lop_op == OP_SORT && |
1619 | PL_tokenbuf[0] == '$' && | |
1620 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
1621 | && !PL_tokenbuf[2]) | |
bbce6d69 | 1622 | { |
3280af22 NIS |
1623 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
1624 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
1625 | d++) |
1626 | { | |
1627 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
1628 | croak("Can't use \"my %s\" in sort comparison", | |
3280af22 | 1629 | PL_tokenbuf); |
a863c7d1 | 1630 | } |
bbce6d69 | 1631 | } |
1632 | } | |
bbce6d69 | 1633 | |
a863c7d1 MB |
1634 | yylval.opval = newOP(OP_PADANY, 0); |
1635 | yylval.opval->op_targ = tmp; | |
1636 | return PRIVATEREF; | |
1637 | } | |
bbce6d69 | 1638 | } |
1639 | ||
02aa26ce NT |
1640 | /* |
1641 | Whine if they've said @foo in a doublequoted string, | |
1642 | and @foo isn't a variable we can find in the symbol | |
1643 | table. | |
1644 | */ | |
3280af22 NIS |
1645 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
1646 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
1647 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
46fc3d4c | 1648 | yyerror(form("In string, %s now must be written as \\%s", |
3280af22 | 1649 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 1650 | } |
1651 | ||
02aa26ce | 1652 | /* build ops for a bareword */ |
3280af22 | 1653 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 1654 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
1655 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
1656 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
1657 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 1658 | : SVt_PVHV)); |
1659 | return WORD; | |
1660 | } | |
1661 | ||
02aa26ce NT |
1662 | /* no identifier pending identification */ |
1663 | ||
3280af22 | 1664 | switch (PL_lex_state) { |
79072805 LW |
1665 | #ifdef COMMENTARY |
1666 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
1667 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
1668 | break; | |
1669 | #endif | |
1670 | ||
02aa26ce | 1671 | /* when we're already built the next token, just pull it out the queue */ |
79072805 | 1672 | case LEX_KNOWNEXT: |
3280af22 NIS |
1673 | PL_nexttoke--; |
1674 | yylval = PL_nextval[PL_nexttoke]; | |
1675 | if (!PL_nexttoke) { | |
1676 | PL_lex_state = PL_lex_defer; | |
1677 | PL_expect = PL_lex_expect; | |
1678 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 1679 | } |
3280af22 | 1680 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 1681 | |
02aa26ce | 1682 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 1683 | when we get here, PL_bufptr is at the \ |
02aa26ce | 1684 | */ |
79072805 LW |
1685 | case LEX_INTERPCASEMOD: |
1686 | #ifdef DEBUGGING | |
3280af22 | 1687 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
463ee0b2 | 1688 | croak("panic: INTERPCASEMOD"); |
79072805 | 1689 | #endif |
02aa26ce | 1690 | /* handle \E or end of string */ |
3280af22 | 1691 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 1692 | char oldmod; |
02aa26ce NT |
1693 | |
1694 | /* if at a \E */ | |
3280af22 NIS |
1695 | if (PL_lex_casemods) { |
1696 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
1697 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 1698 | |
3280af22 NIS |
1699 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
1700 | PL_bufptr += 2; | |
1701 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 1702 | } |
79072805 LW |
1703 | return ')'; |
1704 | } | |
3280af22 NIS |
1705 | if (PL_bufptr != PL_bufend) |
1706 | PL_bufptr += 2; | |
1707 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1708 | return yylex(); |
1709 | } | |
1710 | else { | |
3280af22 | 1711 | s = PL_bufptr + 1; |
79072805 LW |
1712 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
1713 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 1714 | if (strchr("LU", *s) && |
3280af22 | 1715 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 1716 | { |
3280af22 | 1717 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
1718 | return ')'; |
1719 | } | |
3280af22 NIS |
1720 | if (PL_lex_casemods > 10) { |
1721 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
1722 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 1723 | SAVEFREEPV(newlb); |
3280af22 | 1724 | PL_lex_casestack = newlb; |
a0d0e21e LW |
1725 | } |
1726 | } | |
3280af22 NIS |
1727 | PL_lex_casestack[PL_lex_casemods++] = *s; |
1728 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
1729 | PL_lex_state = LEX_INTERPCONCAT; | |
1730 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
1731 | force_next('('); |
1732 | if (*s == 'l') | |
3280af22 | 1733 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 1734 | else if (*s == 'u') |
3280af22 | 1735 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 1736 | else if (*s == 'L') |
3280af22 | 1737 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 1738 | else if (*s == 'U') |
3280af22 | 1739 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 1740 | else if (*s == 'Q') |
3280af22 | 1741 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 1742 | else |
463ee0b2 | 1743 | croak("panic: yylex"); |
3280af22 | 1744 | PL_bufptr = s + 1; |
79072805 | 1745 | force_next(FUNC); |
3280af22 NIS |
1746 | if (PL_lex_starts) { |
1747 | s = PL_bufptr; | |
1748 | PL_lex_starts = 0; | |
79072805 LW |
1749 | Aop(OP_CONCAT); |
1750 | } | |
1751 | else | |
1752 | return yylex(); | |
1753 | } | |
1754 | ||
55497cff | 1755 | case LEX_INTERPPUSH: |
1756 | return sublex_push(); | |
1757 | ||
79072805 | 1758 | case LEX_INTERPSTART: |
3280af22 | 1759 | if (PL_bufptr == PL_bufend) |
79072805 | 1760 | return sublex_done(); |
3280af22 NIS |
1761 | PL_expect = XTERM; |
1762 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
1763 | PL_lex_state = LEX_INTERPNORMAL; | |
1764 | if (PL_lex_dojoin) { | |
1765 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 1766 | force_next(','); |
554b3eca | 1767 | #ifdef USE_THREADS |
533c011a NIS |
1768 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
1769 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
1770 | force_next(PRIVATEREF); |
1771 | #else | |
a0d0e21e | 1772 | force_ident("\"", '$'); |
554b3eca | 1773 | #endif /* USE_THREADS */ |
3280af22 | 1774 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1775 | force_next('$'); |
3280af22 | 1776 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 1777 | force_next('('); |
3280af22 | 1778 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
1779 | force_next(FUNC); |
1780 | } | |
3280af22 NIS |
1781 | if (PL_lex_starts++) { |
1782 | s = PL_bufptr; | |
79072805 LW |
1783 | Aop(OP_CONCAT); |
1784 | } | |
68dc0745 | 1785 | return yylex(); |
79072805 LW |
1786 | |
1787 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
1788 | if (intuit_more(PL_bufptr)) { |
1789 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
1790 | break; |
1791 | } | |
1792 | /* FALL THROUGH */ | |
1793 | ||
1794 | case LEX_INTERPEND: | |
3280af22 NIS |
1795 | if (PL_lex_dojoin) { |
1796 | PL_lex_dojoin = FALSE; | |
1797 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
1798 | return ')'; |
1799 | } | |
1800 | /* FALLTHROUGH */ | |
1801 | case LEX_INTERPCONCAT: | |
1802 | #ifdef DEBUGGING | |
3280af22 | 1803 | if (PL_lex_brackets) |
463ee0b2 | 1804 | croak("panic: INTERPCONCAT"); |
79072805 | 1805 | #endif |
3280af22 | 1806 | if (PL_bufptr == PL_bufend) |
79072805 LW |
1807 | return sublex_done(); |
1808 | ||
3280af22 NIS |
1809 | if (SvIVX(PL_linestr) == '\'') { |
1810 | SV *sv = newSVsv(PL_linestr); | |
1811 | if (!PL_lex_inpat) | |
76e3520e | 1812 | sv = tokeq(sv); |
3280af22 | 1813 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 1814 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 1815 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 1816 | s = PL_bufend; |
79072805 LW |
1817 | } |
1818 | else { | |
3280af22 | 1819 | s = scan_const(PL_bufptr); |
79072805 | 1820 | if (*s == '\\') |
3280af22 | 1821 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 1822 | else |
3280af22 | 1823 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
1824 | } |
1825 | ||
3280af22 NIS |
1826 | if (s != PL_bufptr) { |
1827 | PL_nextval[PL_nexttoke] = yylval; | |
1828 | PL_expect = XTERM; | |
79072805 | 1829 | force_next(THING); |
3280af22 | 1830 | if (PL_lex_starts++) |
79072805 LW |
1831 | Aop(OP_CONCAT); |
1832 | else { | |
3280af22 | 1833 | PL_bufptr = s; |
79072805 LW |
1834 | return yylex(); |
1835 | } | |
1836 | } | |
1837 | ||
1838 | return yylex(); | |
a0d0e21e | 1839 | case LEX_FORMLINE: |
3280af22 NIS |
1840 | PL_lex_state = LEX_NORMAL; |
1841 | s = scan_formline(PL_bufptr); | |
1842 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
1843 | goto rightbracket; |
1844 | OPERATOR(';'); | |
79072805 LW |
1845 | } |
1846 | ||
3280af22 NIS |
1847 | s = PL_bufptr; |
1848 | PL_oldoldbufptr = PL_oldbufptr; | |
1849 | PL_oldbufptr = s; | |
79072805 | 1850 | DEBUG_p( { |
3280af22 | 1851 | PerlIO_printf(PerlIO_stderr(), "### Tokener expecting %s at %s\n", exp_name[PL_expect], s); |
79072805 | 1852 | } ) |
463ee0b2 LW |
1853 | |
1854 | retry: | |
378cc40b LW |
1855 | switch (*s) { |
1856 | default: | |
a0ed51b3 LW |
1857 | /* |
1858 | * Note: we try to be careful never to call the isXXX_utf8() functions unless we're | |
1859 | * pretty sure we've seen the beginning of a UTF-8 character (that is, the two high | |
1860 | * bits are set). Otherwise we risk loading in the heavy-duty SWASHINIT and SWASHGET | |
1861 | * routines unnecessarily. You will see this not just here but throughout this file. | |
1862 | */ | |
1863 | if (UTF && (*s & 0xc0) == 0x80) { | |
dfe13c55 | 1864 | if (isIDFIRST_utf8((U8*)s)) |
a0ed51b3 LW |
1865 | goto keylookup; |
1866 | } | |
1867 | croak("Unrecognized character \\x%02X", *s & 255); | |
e929a76b LW |
1868 | case 4: |
1869 | case 26: | |
1870 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 1871 | case 0: |
3280af22 NIS |
1872 | if (!PL_rsfp) { |
1873 | PL_last_uni = 0; | |
1874 | PL_last_lop = 0; | |
1875 | if (PL_lex_brackets) | |
463ee0b2 | 1876 | yyerror("Missing right bracket"); |
79072805 | 1877 | TOKEN(0); |
463ee0b2 | 1878 | } |
3280af22 | 1879 | if (s++ < PL_bufend) |
a687059c | 1880 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
1881 | PL_last_uni = 0; |
1882 | PL_last_lop = 0; | |
1883 | if (!PL_in_eval && !PL_preambled) { | |
1884 | PL_preambled = TRUE; | |
1885 | sv_setpv(PL_linestr,incl_perldb()); | |
1886 | if (SvCUR(PL_linestr)) | |
1887 | sv_catpv(PL_linestr,";"); | |
1888 | if (PL_preambleav){ | |
1889 | while(AvFILLp(PL_preambleav) >= 0) { | |
1890 | SV *tmpsv = av_shift(PL_preambleav); | |
1891 | sv_catsv(PL_linestr, tmpsv); | |
1892 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 1893 | sv_free(tmpsv); |
1894 | } | |
3280af22 NIS |
1895 | sv_free((SV*)PL_preambleav); |
1896 | PL_preambleav = NULL; | |
91b7def8 | 1897 | } |
3280af22 NIS |
1898 | if (PL_minus_n || PL_minus_p) { |
1899 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
1900 | if (PL_minus_l) | |
1901 | sv_catpv(PL_linestr,"chomp;"); | |
1902 | if (PL_minus_a) { | |
8fd239a7 CS |
1903 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
1904 | if (gv) | |
1905 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
1906 | if (PL_minus_F) { |
1907 | if (strchr("/'\"", *PL_splitstr) | |
1908 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
1909 | sv_catpvf(PL_linestr, "@F=split(%s);", PL_splitstr); | |
54310121 | 1910 | else { |
1911 | char delim; | |
1912 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 1913 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 1914 | delim = *s; |
3280af22 | 1915 | sv_catpvf(PL_linestr, "@F=split(%s%c", |
46fc3d4c | 1916 | "q" + (delim == '\''), delim); |
3280af22 | 1917 | for (s = PL_splitstr; *s; s++) { |
54310121 | 1918 | if (*s == '\\') |
3280af22 NIS |
1919 | sv_catpvn(PL_linestr, "\\", 1); |
1920 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 1921 | } |
3280af22 | 1922 | sv_catpvf(PL_linestr, "%c);", delim); |
54310121 | 1923 | } |
2304df62 AD |
1924 | } |
1925 | else | |
3280af22 | 1926 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 1927 | } |
79072805 | 1928 | } |
3280af22 NIS |
1929 | sv_catpv(PL_linestr, "\n"); |
1930 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1931 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1932 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
1933 | SV *sv = NEWSV(85,0); |
1934 | ||
1935 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 NIS |
1936 | sv_setsv(sv,PL_linestr); |
1937 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a0d0e21e | 1938 | } |
79072805 | 1939 | goto retry; |
a687059c | 1940 | } |
e929a76b | 1941 | do { |
3280af22 | 1942 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 1943 | fake_eof: |
3280af22 NIS |
1944 | if (PL_rsfp) { |
1945 | if (PL_preprocess && !PL_in_eval) | |
1946 | (void)PerlProc_pclose(PL_rsfp); | |
1947 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
1948 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 1949 | else |
3280af22 NIS |
1950 | (void)PerlIO_close(PL_rsfp); |
1951 | PL_rsfp = Nullfp; | |
4a9ae47a | 1952 | PL_doextract = FALSE; |
395c3793 | 1953 | } |
3280af22 NIS |
1954 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
1955 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
1956 | sv_catpv(PL_linestr,";}"); | |
1957 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1958 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1959 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
1960 | goto retry; |
1961 | } | |
3280af22 NIS |
1962 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
1963 | sv_setpv(PL_linestr,""); | |
79072805 | 1964 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 1965 | } |
3280af22 | 1966 | if (PL_doextract) { |
a0d0e21e | 1967 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 1968 | PL_doextract = FALSE; |
a0d0e21e LW |
1969 | |
1970 | /* Incest with pod. */ | |
1971 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
1972 | sv_setpv(PL_linestr, ""); |
1973 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
1974 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1975 | PL_doextract = FALSE; | |
a0d0e21e LW |
1976 | } |
1977 | } | |
463ee0b2 | 1978 | incline(s); |
3280af22 NIS |
1979 | } while (PL_doextract); |
1980 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
1981 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 1982 | SV *sv = NEWSV(85,0); |
a687059c | 1983 | |
93a17b20 | 1984 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
1985 | sv_setsv(sv,PL_linestr); |
1986 | av_store(GvAV(PL_curcop->cop_filegv),(I32)PL_curcop->cop_line,sv); | |
a687059c | 1987 | } |
3280af22 NIS |
1988 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
1989 | if (PL_curcop->cop_line == 1) { | |
1990 | while (s < PL_bufend && isSPACE(*s)) | |
79072805 | 1991 | s++; |
a0d0e21e | 1992 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 1993 | s++; |
44a8e56a | 1994 | d = Nullch; |
3280af22 | 1995 | if (!PL_in_eval) { |
44a8e56a | 1996 | if (*s == '#' && *(s+1) == '!') |
1997 | d = s + 2; | |
1998 | #ifdef ALTERNATE_SHEBANG | |
1999 | else { | |
2000 | static char as[] = ALTERNATE_SHEBANG; | |
2001 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2002 | d = s + (sizeof(as) - 1); | |
2003 | } | |
2004 | #endif /* ALTERNATE_SHEBANG */ | |
2005 | } | |
2006 | if (d) { | |
b8378b72 | 2007 | char *ipath; |
774d564b | 2008 | char *ipathend; |
b8378b72 | 2009 | |
774d564b | 2010 | while (isSPACE(*d)) |
b8378b72 CS |
2011 | d++; |
2012 | ipath = d; | |
774d564b | 2013 | while (*d && !isSPACE(*d)) |
2014 | d++; | |
2015 | ipathend = d; | |
2016 | ||
2017 | #ifdef ARG_ZERO_IS_SCRIPT | |
2018 | if (ipathend > ipath) { | |
2019 | /* | |
2020 | * HP-UX (at least) sets argv[0] to the script name, | |
2021 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2022 | * at least, set argv[0] to the basename of the Perl | |
2023 | * interpreter. So, having found "#!", we'll set it right. | |
2024 | */ | |
2025 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2026 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
6b88bc9c | 2027 | if (sv_eq(x, GvSV(PL_curcop->cop_filegv))) { |
774d564b | 2028 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2029 | SvSETMAGIC(x); |
2030 | } | |
774d564b | 2031 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2032 | } |
774d564b | 2033 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2034 | |
2035 | /* | |
2036 | * Look for options. | |
2037 | */ | |
748a9306 LW |
2038 | d = instr(s,"perl -"); |
2039 | if (!d) | |
2040 | d = instr(s,"perl"); | |
44a8e56a | 2041 | #ifdef ALTERNATE_SHEBANG |
2042 | /* | |
2043 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2044 | * character that can be part of a Perl expression, then if | |
2045 | * we see it but not "perl", we're probably looking at the | |
2046 | * start of Perl code, not a request to hand off to some | |
2047 | * other interpreter. Similarly, if "perl" is there, but | |
2048 | * not in the first 'word' of the line, we assume the line | |
2049 | * contains the start of the Perl program. | |
44a8e56a | 2050 | */ |
2051 | if (d && *s != '#') { | |
774d564b | 2052 | char *c = ipath; |
44a8e56a | 2053 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2054 | c++; | |
2055 | if (c < d) | |
2056 | d = Nullch; /* "perl" not in first word; ignore */ | |
2057 | else | |
2058 | *s = '#'; /* Don't try to parse shebang line */ | |
2059 | } | |
774d564b | 2060 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2061 | if (!d && |
44a8e56a | 2062 | *s == '#' && |
774d564b | 2063 | ipathend > ipath && |
3280af22 | 2064 | !PL_minus_c && |
748a9306 | 2065 | !instr(s,"indir") && |
3280af22 | 2066 | instr(PL_origargv[0],"perl")) |
748a9306 | 2067 | { |
9f68db38 | 2068 | char **newargv; |
9f68db38 | 2069 | |
774d564b | 2070 | *ipathend = '\0'; |
2071 | s = ipathend + 1; | |
3280af22 | 2072 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2073 | s++; |
3280af22 NIS |
2074 | if (s < PL_bufend) { |
2075 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2076 | newargv[1] = s; |
3280af22 | 2077 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2078 | s++; |
2079 | *s = '\0'; | |
3280af22 | 2080 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2081 | } |
2082 | else | |
3280af22 | 2083 | newargv = PL_origargv; |
774d564b | 2084 | newargv[0] = ipath; |
2085 | execv(ipath, newargv); | |
2086 | croak("Can't exec %s", ipath); | |
9f68db38 | 2087 | } |
748a9306 | 2088 | if (d) { |
3280af22 NIS |
2089 | U32 oldpdb = PL_perldb; |
2090 | bool oldn = PL_minus_n; | |
2091 | bool oldp = PL_minus_p; | |
748a9306 LW |
2092 | |
2093 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2094 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2095 | |
2096 | if (*d++ == '-') { | |
8cc95fdb | 2097 | do { |
2098 | if (*d == 'M' || *d == 'm') { | |
2099 | char *m = d; | |
2100 | while (*d && !isSPACE(*d)) d++; | |
2101 | croak("Too late for \"-%.*s\" option", | |
2102 | (int)(d - m), m); | |
2103 | } | |
2104 | d = moreswitches(d); | |
2105 | } while (d); | |
84902520 | 2106 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2107 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2108 | /* if we have already added "LINE: while (<>) {", |
2109 | we must not do it again */ | |
748a9306 | 2110 | { |
3280af22 NIS |
2111 | sv_setpv(PL_linestr, ""); |
2112 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2113 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2114 | PL_preambled = FALSE; | |
84902520 | 2115 | if (PERLDB_LINE) |
3280af22 | 2116 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2117 | goto retry; |
2118 | } | |
a0d0e21e | 2119 | } |
79072805 | 2120 | } |
9f68db38 | 2121 | } |
79072805 | 2122 | } |
3280af22 NIS |
2123 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2124 | PL_bufptr = s; | |
2125 | PL_lex_state = LEX_FORMLINE; | |
a0d0e21e | 2126 | return yylex(); |
ae986130 | 2127 | } |
378cc40b | 2128 | goto retry; |
4fdae800 | 2129 | case '\r': |
6a27c188 | 2130 | #ifdef PERL_STRICT_CR |
54310121 | 2131 | warn("Illegal character \\%03o (carriage return)", '\r'); |
2132 | croak( | |
2133 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); | |
a868473f | 2134 | #endif |
4fdae800 | 2135 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2136 | s++; |
2137 | goto retry; | |
378cc40b | 2138 | case '#': |
e929a76b | 2139 | case '\n': |
3280af22 NIS |
2140 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2141 | d = PL_bufend; | |
a687059c | 2142 | while (s < d && *s != '\n') |
378cc40b | 2143 | s++; |
0f85fab0 | 2144 | if (s < d) |
378cc40b | 2145 | s++; |
463ee0b2 | 2146 | incline(s); |
3280af22 NIS |
2147 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2148 | PL_bufptr = s; | |
2149 | PL_lex_state = LEX_FORMLINE; | |
a0d0e21e | 2150 | return yylex(); |
a687059c | 2151 | } |
378cc40b | 2152 | } |
a687059c | 2153 | else { |
378cc40b | 2154 | *s = '\0'; |
3280af22 | 2155 | PL_bufend = s; |
a687059c | 2156 | } |
378cc40b LW |
2157 | goto retry; |
2158 | case '-': | |
79072805 | 2159 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2160 | s++; |
3280af22 | 2161 | PL_bufptr = s; |
748a9306 LW |
2162 | tmp = *s++; |
2163 | ||
3280af22 | 2164 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2165 | s++; |
2166 | ||
2167 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2168 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2169 | OPERATOR('-'); /* unary minus */ |
2170 | } | |
3280af22 NIS |
2171 | PL_last_uni = PL_oldbufptr; |
2172 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2173 | switch (tmp) { |
79072805 LW |
2174 | case 'r': FTST(OP_FTEREAD); |
2175 | case 'w': FTST(OP_FTEWRITE); | |
2176 | case 'x': FTST(OP_FTEEXEC); | |
2177 | case 'o': FTST(OP_FTEOWNED); | |
2178 | case 'R': FTST(OP_FTRREAD); | |
2179 | case 'W': FTST(OP_FTRWRITE); | |
2180 | case 'X': FTST(OP_FTREXEC); | |
2181 | case 'O': FTST(OP_FTROWNED); | |
2182 | case 'e': FTST(OP_FTIS); | |
2183 | case 'z': FTST(OP_FTZERO); | |
2184 | case 's': FTST(OP_FTSIZE); | |
2185 | case 'f': FTST(OP_FTFILE); | |
2186 | case 'd': FTST(OP_FTDIR); | |
2187 | case 'l': FTST(OP_FTLINK); | |
2188 | case 'p': FTST(OP_FTPIPE); | |
2189 | case 'S': FTST(OP_FTSOCK); | |
2190 | case 'u': FTST(OP_FTSUID); | |
2191 | case 'g': FTST(OP_FTSGID); | |
2192 | case 'k': FTST(OP_FTSVTX); | |
2193 | case 'b': FTST(OP_FTBLK); | |
2194 | case 'c': FTST(OP_FTCHR); | |
2195 | case 't': FTST(OP_FTTTY); | |
2196 | case 'T': FTST(OP_FTTEXT); | |
2197 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2198 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2199 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2200 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2201 | default: |
ff0cee69 | 2202 | croak("Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2203 | break; |
2204 | } | |
2205 | } | |
a687059c LW |
2206 | tmp = *s++; |
2207 | if (*s == tmp) { | |
2208 | s++; | |
3280af22 | 2209 | if (PL_expect == XOPERATOR) |
79072805 LW |
2210 | TERM(POSTDEC); |
2211 | else | |
2212 | OPERATOR(PREDEC); | |
2213 | } | |
2214 | else if (*s == '>') { | |
2215 | s++; | |
2216 | s = skipspace(s); | |
2217 | if (isIDFIRST(*s)) { | |
a0d0e21e | 2218 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2219 | TOKEN(ARROW); |
79072805 | 2220 | } |
748a9306 LW |
2221 | else if (*s == '$') |
2222 | OPERATOR(ARROW); | |
463ee0b2 | 2223 | else |
748a9306 | 2224 | TERM(ARROW); |
a687059c | 2225 | } |
3280af22 | 2226 | if (PL_expect == XOPERATOR) |
79072805 LW |
2227 | Aop(OP_SUBTRACT); |
2228 | else { | |
3280af22 | 2229 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2230 | check_uni(); |
79072805 | 2231 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2232 | } |
79072805 | 2233 | |
378cc40b | 2234 | case '+': |
a687059c LW |
2235 | tmp = *s++; |
2236 | if (*s == tmp) { | |
378cc40b | 2237 | s++; |
3280af22 | 2238 | if (PL_expect == XOPERATOR) |
79072805 LW |
2239 | TERM(POSTINC); |
2240 | else | |
2241 | OPERATOR(PREINC); | |
378cc40b | 2242 | } |
3280af22 | 2243 | if (PL_expect == XOPERATOR) |
79072805 LW |
2244 | Aop(OP_ADD); |
2245 | else { | |
3280af22 | 2246 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2247 | check_uni(); |
a687059c | 2248 | OPERATOR('+'); |
2f3197b3 | 2249 | } |
a687059c | 2250 | |
378cc40b | 2251 | case '*': |
3280af22 NIS |
2252 | if (PL_expect != XOPERATOR) { |
2253 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2254 | PL_expect = XOPERATOR; | |
2255 | force_ident(PL_tokenbuf, '*'); | |
2256 | if (!*PL_tokenbuf) | |
a0d0e21e | 2257 | PREREF('*'); |
79072805 | 2258 | TERM('*'); |
a687059c | 2259 | } |
79072805 LW |
2260 | s++; |
2261 | if (*s == '*') { | |
a687059c | 2262 | s++; |
79072805 | 2263 | PWop(OP_POW); |
a687059c | 2264 | } |
79072805 LW |
2265 | Mop(OP_MULTIPLY); |
2266 | ||
378cc40b | 2267 | case '%': |
3280af22 | 2268 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2269 | ++s; |
2270 | Mop(OP_MODULO); | |
a687059c | 2271 | } |
3280af22 NIS |
2272 | PL_tokenbuf[0] = '%'; |
2273 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2274 | if (!PL_tokenbuf[1]) { | |
2275 | if (s == PL_bufend) | |
bbce6d69 | 2276 | yyerror("Final % should be \\% or %name"); |
2277 | PREREF('%'); | |
a687059c | 2278 | } |
3280af22 | 2279 | PL_pending_ident = '%'; |
bbce6d69 | 2280 | TERM('%'); |
a687059c | 2281 | |
378cc40b | 2282 | case '^': |
79072805 | 2283 | s++; |
a0d0e21e | 2284 | BOop(OP_BIT_XOR); |
79072805 | 2285 | case '[': |
3280af22 | 2286 | PL_lex_brackets++; |
79072805 | 2287 | /* FALL THROUGH */ |
378cc40b | 2288 | case '~': |
378cc40b | 2289 | case ',': |
378cc40b LW |
2290 | tmp = *s++; |
2291 | OPERATOR(tmp); | |
a0d0e21e LW |
2292 | case ':': |
2293 | if (s[1] == ':') { | |
2294 | len = 0; | |
2295 | goto just_a_word; | |
2296 | } | |
2297 | s++; | |
2298 | OPERATOR(':'); | |
8990e307 LW |
2299 | case '(': |
2300 | s++; | |
3280af22 NIS |
2301 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2302 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2303 | else |
3280af22 | 2304 | PL_expect = XTERM; |
a0d0e21e | 2305 | TOKEN('('); |
378cc40b | 2306 | case ';': |
3280af22 NIS |
2307 | if (PL_curcop->cop_line < PL_copline) |
2308 | PL_copline = PL_curcop->cop_line; | |
378cc40b LW |
2309 | tmp = *s++; |
2310 | OPERATOR(tmp); | |
2311 | case ')': | |
378cc40b | 2312 | tmp = *s++; |
16d20bd9 AD |
2313 | s = skipspace(s); |
2314 | if (*s == '{') | |
2315 | PREBLOCK(tmp); | |
378cc40b | 2316 | TERM(tmp); |
79072805 LW |
2317 | case ']': |
2318 | s++; | |
3280af22 | 2319 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2320 | yyerror("Unmatched right bracket"); |
2321 | else | |
3280af22 NIS |
2322 | --PL_lex_brackets; |
2323 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2324 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2325 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2326 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2327 | } |
2328 | } | |
4633a7c4 | 2329 | TERM(']'); |
79072805 LW |
2330 | case '{': |
2331 | leftbracket: | |
79072805 | 2332 | s++; |
3280af22 NIS |
2333 | if (PL_lex_brackets > 100) { |
2334 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2335 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2336 | SAVEFREEPV(newlb); |
3280af22 | 2337 | PL_lex_brackstack = newlb; |
8990e307 LW |
2338 | } |
2339 | } | |
3280af22 | 2340 | switch (PL_expect) { |
a0d0e21e | 2341 | case XTERM: |
3280af22 | 2342 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2343 | s--; |
2344 | PRETERMBLOCK(DO); | |
2345 | } | |
3280af22 NIS |
2346 | if (PL_oldoldbufptr == PL_last_lop) |
2347 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2348 | else |
3280af22 | 2349 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2350 | OPERATOR(HASHBRACK); |
a0d0e21e | 2351 | case XOPERATOR: |
3280af22 | 2352 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2353 | s++; |
44a8e56a | 2354 | d = s; |
3280af22 NIS |
2355 | PL_tokenbuf[0] = '\0'; |
2356 | if (d < PL_bufend && *d == '-') { | |
2357 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2358 | d++; |
3280af22 | 2359 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2360 | d++; |
2361 | } | |
3280af22 NIS |
2362 | if (d < PL_bufend && isIDFIRST(*d)) { |
2363 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2364 | FALSE, &len); |
3280af22 | 2365 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2366 | d++; |
2367 | if (*d == '}') { | |
3280af22 | 2368 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2369 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2370 | if (minus) | |
2371 | force_next('-'); | |
748a9306 LW |
2372 | } |
2373 | } | |
2374 | /* FALL THROUGH */ | |
2375 | case XBLOCK: | |
3280af22 NIS |
2376 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2377 | PL_expect = XSTATE; | |
a0d0e21e LW |
2378 | break; |
2379 | case XTERMBLOCK: | |
3280af22 NIS |
2380 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2381 | PL_expect = XSTATE; | |
a0d0e21e LW |
2382 | break; |
2383 | default: { | |
2384 | char *t; | |
3280af22 NIS |
2385 | if (PL_oldoldbufptr == PL_last_lop) |
2386 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2387 | else |
3280af22 | 2388 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2389 | s = skipspace(s); |
09ecc4b6 | 2390 | if (*s == '}') |
a0d0e21e | 2391 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2392 | /* This hack serves to disambiguate a pair of curlies |
2393 | * as being a block or an anon hash. Normally, expectation | |
2394 | * determines that, but in cases where we're not in a | |
2395 | * position to expect anything in particular (like inside | |
2396 | * eval"") we have to resolve the ambiguity. This code | |
2397 | * covers the case where the first term in the curlies is a | |
2398 | * quoted string. Most other cases need to be explicitly | |
2399 | * disambiguated by prepending a `+' before the opening | |
2400 | * curly in order to force resolution as an anon hash. | |
2401 | * | |
2402 | * XXX should probably propagate the outer expectation | |
2403 | * into eval"" to rely less on this hack, but that could | |
2404 | * potentially break current behavior of eval"". | |
2405 | * GSAR 97-07-21 | |
2406 | */ | |
2407 | t = s; | |
2408 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2409 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2410 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2411 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2412 | t++; | |
2413 | t++; | |
a0d0e21e | 2414 | } |
b8a4b1be | 2415 | else if (*s == 'q') { |
3280af22 | 2416 | if (++t < PL_bufend |
b8a4b1be | 2417 | && (!isALNUM(*t) |
3280af22 | 2418 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2419 | && !isALNUM(*t)))) { |
2420 | char *tmps; | |
2421 | char open, close, term; | |
2422 | I32 brackets = 1; | |
2423 | ||
3280af22 | 2424 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2425 | t++; |
2426 | term = *t; | |
2427 | open = term; | |
2428 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2429 | term = tmps[5]; | |
2430 | close = term; | |
2431 | if (open == close) | |
3280af22 NIS |
2432 | for (t++; t < PL_bufend; t++) { |
2433 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2434 | t++; |
6d07e5e9 | 2435 | else if (*t == open) |
b8a4b1be GS |
2436 | break; |
2437 | } | |
2438 | else | |
3280af22 NIS |
2439 | for (t++; t < PL_bufend; t++) { |
2440 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2441 | t++; |
6d07e5e9 | 2442 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2443 | break; |
2444 | else if (*t == open) | |
2445 | brackets++; | |
2446 | } | |
2447 | } | |
2448 | t++; | |
a0d0e21e | 2449 | } |
b8a4b1be | 2450 | else if (isALPHA(*s)) { |
3280af22 | 2451 | for (t++; t < PL_bufend && isALNUM(*t); t++) ; |
a0d0e21e | 2452 | } |
3280af22 | 2453 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2454 | t++; |
b8a4b1be GS |
2455 | /* if comma follows first term, call it an anon hash */ |
2456 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2457 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2458 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2459 | OPERATOR(HASHBRACK); |
3280af22 NIS |
2460 | if (PL_expect == XREF) |
2461 | PL_expect = XTERM; | |
a0d0e21e | 2462 | else { |
3280af22 NIS |
2463 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2464 | PL_expect = XSTATE; | |
a0d0e21e | 2465 | } |
8990e307 | 2466 | } |
a0d0e21e | 2467 | break; |
463ee0b2 | 2468 | } |
3280af22 | 2469 | yylval.ival = PL_curcop->cop_line; |
79072805 | 2470 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2471 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2472 | TOKEN('{'); |
378cc40b | 2473 | case '}': |
79072805 LW |
2474 | rightbracket: |
2475 | s++; | |
3280af22 | 2476 | if (PL_lex_brackets <= 0) |
463ee0b2 LW |
2477 | yyerror("Unmatched right bracket"); |
2478 | else | |
3280af22 NIS |
2479 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2480 | if (PL_lex_brackets < PL_lex_formbrack) | |
2481 | PL_lex_formbrack = 0; | |
2482 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2483 | if (PL_lex_brackets == 0) { | |
2484 | if (PL_lex_fakebrack) { | |
2485 | PL_lex_state = LEX_INTERPEND; | |
2486 | PL_bufptr = s; | |
79072805 LW |
2487 | return yylex(); /* ignore fake brackets */ |
2488 | } | |
fa83b5b6 | 2489 | if (*s == '-' && s[1] == '>') |
3280af22 | 2490 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2491 | else if (*s != '[' && *s != '{') |
3280af22 | 2492 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2493 | } |
2494 | } | |
3280af22 NIS |
2495 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2496 | PL_bufptr = s; | |
2497 | PL_lex_fakebrack = 0; | |
748a9306 LW |
2498 | return yylex(); /* ignore fake brackets */ |
2499 | } | |
79072805 LW |
2500 | force_next('}'); |
2501 | TOKEN(';'); | |
378cc40b LW |
2502 | case '&': |
2503 | s++; | |
2504 | tmp = *s++; | |
2505 | if (tmp == '&') | |
a0d0e21e | 2506 | AOPERATOR(ANDAND); |
378cc40b | 2507 | s--; |
3280af22 | 2508 | if (PL_expect == XOPERATOR) { |
599cee73 | 2509 | if (ckWARN(WARN_SEMICOLON) && isALPHA(*s) && PL_bufptr == PL_linestart) { |
3280af22 | 2510 | PL_curcop->cop_line--; |
599cee73 | 2511 | warner(WARN_SEMICOLON, warn_nosemi); |
3280af22 | 2512 | PL_curcop->cop_line++; |
463ee0b2 | 2513 | } |
79072805 | 2514 | BAop(OP_BIT_AND); |
463ee0b2 | 2515 | } |
79072805 | 2516 | |
3280af22 NIS |
2517 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
2518 | if (*PL_tokenbuf) { | |
2519 | PL_expect = XOPERATOR; | |
2520 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 2521 | } |
79072805 LW |
2522 | else |
2523 | PREREF('&'); | |
c07a80fd | 2524 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
2525 | TERM('&'); |
2526 | ||
378cc40b LW |
2527 | case '|': |
2528 | s++; | |
2529 | tmp = *s++; | |
2530 | if (tmp == '|') | |
a0d0e21e | 2531 | AOPERATOR(OROR); |
378cc40b | 2532 | s--; |
79072805 | 2533 | BOop(OP_BIT_OR); |
378cc40b LW |
2534 | case '=': |
2535 | s++; | |
2536 | tmp = *s++; | |
2537 | if (tmp == '=') | |
79072805 LW |
2538 | Eop(OP_EQ); |
2539 | if (tmp == '>') | |
2540 | OPERATOR(','); | |
378cc40b | 2541 | if (tmp == '~') |
79072805 | 2542 | PMop(OP_MATCH); |
599cee73 PM |
2543 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
2544 | warner(WARN_SYNTAX, "Reversed %c= operator",(int)tmp); | |
378cc40b | 2545 | s--; |
3280af22 NIS |
2546 | if (PL_expect == XSTATE && isALPHA(tmp) && |
2547 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 2548 | { |
3280af22 NIS |
2549 | if (PL_in_eval && !PL_rsfp) { |
2550 | d = PL_bufend; | |
a5f75d66 AD |
2551 | while (s < d) { |
2552 | if (*s++ == '\n') { | |
2553 | incline(s); | |
2554 | if (strnEQ(s,"=cut",4)) { | |
2555 | s = strchr(s,'\n'); | |
2556 | if (s) | |
2557 | s++; | |
2558 | else | |
2559 | s = d; | |
2560 | incline(s); | |
2561 | goto retry; | |
2562 | } | |
2563 | } | |
2564 | } | |
2565 | goto retry; | |
2566 | } | |
3280af22 NIS |
2567 | s = PL_bufend; |
2568 | PL_doextract = TRUE; | |
a0d0e21e LW |
2569 | goto retry; |
2570 | } | |
3280af22 | 2571 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 2572 | char *t; |
51882d45 | 2573 | #ifdef PERL_STRICT_CR |
a0d0e21e | 2574 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
2575 | #else |
2576 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
2577 | #endif | |
a0d0e21e LW |
2578 | if (*t == '\n' || *t == '#') { |
2579 | s--; | |
3280af22 | 2580 | PL_expect = XBLOCK; |
a0d0e21e LW |
2581 | goto leftbracket; |
2582 | } | |
79072805 | 2583 | } |
a0d0e21e LW |
2584 | yylval.ival = 0; |
2585 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
2586 | case '!': |
2587 | s++; | |
2588 | tmp = *s++; | |
2589 | if (tmp == '=') | |
79072805 | 2590 | Eop(OP_NE); |
378cc40b | 2591 | if (tmp == '~') |
79072805 | 2592 | PMop(OP_NOT); |
378cc40b LW |
2593 | s--; |
2594 | OPERATOR('!'); | |
2595 | case '<': | |
3280af22 | 2596 | if (PL_expect != XOPERATOR) { |
93a17b20 | 2597 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 2598 | check_uni(); |
79072805 LW |
2599 | if (s[1] == '<') |
2600 | s = scan_heredoc(s); | |
2601 | else | |
2602 | s = scan_inputsymbol(s); | |
2603 | TERM(sublex_start()); | |
378cc40b LW |
2604 | } |
2605 | s++; | |
2606 | tmp = *s++; | |
2607 | if (tmp == '<') | |
79072805 | 2608 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
2609 | if (tmp == '=') { |
2610 | tmp = *s++; | |
2611 | if (tmp == '>') | |
79072805 | 2612 | Eop(OP_NCMP); |
395c3793 | 2613 | s--; |
79072805 | 2614 | Rop(OP_LE); |
395c3793 | 2615 | } |
378cc40b | 2616 | s--; |
79072805 | 2617 | Rop(OP_LT); |
378cc40b LW |
2618 | case '>': |
2619 | s++; | |
2620 | tmp = *s++; | |
2621 | if (tmp == '>') | |
79072805 | 2622 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 2623 | if (tmp == '=') |
79072805 | 2624 | Rop(OP_GE); |
378cc40b | 2625 | s--; |
79072805 | 2626 | Rop(OP_GT); |
378cc40b LW |
2627 | |
2628 | case '$': | |
bbce6d69 | 2629 | CLINE; |
2630 | ||
3280af22 NIS |
2631 | if (PL_expect == XOPERATOR) { |
2632 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2633 | PL_expect = XTERM; | |
a0d0e21e | 2634 | depcom(); |
bbce6d69 | 2635 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 2636 | } |
8990e307 | 2637 | } |
a0d0e21e | 2638 | |
6cef1e77 | 2639 | if (s[1] == '#' && (isALPHA(s[2]) || strchr("_{$:+-", s[2]))) { |
3280af22 NIS |
2640 | if (PL_expect == XOPERATOR) |
2641 | no_op("Array length", PL_bufptr); | |
2642 | PL_tokenbuf[0] = '@'; | |
2643 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
8903cb82 | 2644 | FALSE); |
3280af22 | 2645 | if (!PL_tokenbuf[1]) |
a0d0e21e | 2646 | PREREF(DOLSHARP); |
3280af22 NIS |
2647 | PL_expect = XOPERATOR; |
2648 | PL_pending_ident = '#'; | |
463ee0b2 | 2649 | TOKEN(DOLSHARP); |
79072805 | 2650 | } |
bbce6d69 | 2651 | |
3280af22 NIS |
2652 | if (PL_expect == XOPERATOR) |
2653 | no_op("Scalar", PL_bufptr); | |
2654 | PL_tokenbuf[0] = '$'; | |
2655 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2656 | if (!PL_tokenbuf[1]) { | |
2657 | if (s == PL_bufend) | |
bbce6d69 | 2658 | yyerror("Final $ should be \\$ or $name"); |
2659 | PREREF('$'); | |
8990e307 | 2660 | } |
a0d0e21e | 2661 | |
bbce6d69 | 2662 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 2663 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 2664 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 2665 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 2666 | yylval.opval->op_private = OPpCONST_ARYBASE; |
2667 | TERM(THING); | |
2668 | } | |
2669 | ||
ff68c719 | 2670 | d = s; |
3280af22 | 2671 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2672 | s = skipspace(s); |
2673 | ||
3280af22 | 2674 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2675 | char *t; |
2676 | if (*s == '[') { | |
3280af22 | 2677 | PL_tokenbuf[0] = '@'; |
599cee73 | 2678 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 2679 | for(t = s + 1; |
2680 | isSPACE(*t) || isALNUM(*t) || *t == '$'; | |
2681 | t++) ; | |
a0d0e21e | 2682 | if (*t++ == ',') { |
3280af22 NIS |
2683 | PL_bufptr = skipspace(PL_bufptr); |
2684 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 2685 | t++; |
599cee73 PM |
2686 | warner(WARN_SYNTAX, |
2687 | "Multidimensional syntax %.*s not supported", | |
2688 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
2689 | } |
2690 | } | |
bbce6d69 | 2691 | } |
2692 | else if (*s == '{') { | |
3280af22 | 2693 | PL_tokenbuf[0] = '%'; |
599cee73 | 2694 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 2695 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
2696 | { | |
3280af22 | 2697 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2698 | STRLEN len; |
2699 | for (t++; isSPACE(*t); t++) ; | |
748a9306 | 2700 | if (isIDFIRST(*t)) { |
8903cb82 | 2701 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
748a9306 | 2702 | if (*t != '(' && perl_get_cv(tmpbuf, FALSE)) |
599cee73 PM |
2703 | warner(WARN_SYNTAX, |
2704 | "You need to quote \"%s\"", tmpbuf); | |
748a9306 | 2705 | } |
93a17b20 LW |
2706 | } |
2707 | } | |
2f3197b3 | 2708 | } |
bbce6d69 | 2709 | |
3280af22 NIS |
2710 | PL_expect = XOPERATOR; |
2711 | if (PL_lex_state == LEX_NORMAL && isSPACE(*d)) { | |
2712 | bool islop = (PL_last_lop == PL_oldoldbufptr); | |
2713 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
2714 | PL_expect = XOPERATOR; | |
bbce6d69 | 2715 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 2716 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
bbce6d69 | 2717 | else if (strchr("&*<%", *s) && isIDFIRST(s[1])) |
3280af22 | 2718 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
68dc0745 | 2719 | else if (isIDFIRST(*s)) { |
3280af22 | 2720 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 2721 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
2722 | if (tmp = keyword(tmpbuf, len)) { |
2723 | /* binary operators exclude handle interpretations */ | |
2724 | switch (tmp) { | |
2725 | case -KEY_x: | |
2726 | case -KEY_eq: | |
2727 | case -KEY_ne: | |
2728 | case -KEY_gt: | |
2729 | case -KEY_lt: | |
2730 | case -KEY_ge: | |
2731 | case -KEY_le: | |
2732 | case -KEY_cmp: | |
2733 | break; | |
2734 | default: | |
3280af22 | 2735 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
2736 | break; |
2737 | } | |
2738 | } | |
68dc0745 | 2739 | else { |
2740 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
2741 | if (gv && GvCVu(gv)) | |
3280af22 | 2742 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 2743 | } |
93a17b20 | 2744 | } |
bbce6d69 | 2745 | else if (isDIGIT(*s)) |
3280af22 | 2746 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 2747 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 2748 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
bbce6d69 | 2749 | else if (strchr("/?-+", *s) && !isSPACE(s[1])) |
3280af22 | 2750 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
bbce6d69 | 2751 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2])) |
3280af22 | 2752 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 2753 | } |
3280af22 | 2754 | PL_pending_ident = '$'; |
79072805 | 2755 | TOKEN('$'); |
378cc40b LW |
2756 | |
2757 | case '@': | |
3280af22 | 2758 | if (PL_expect == XOPERATOR) |
bbce6d69 | 2759 | no_op("Array", s); |
3280af22 NIS |
2760 | PL_tokenbuf[0] = '@'; |
2761 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
2762 | if (!PL_tokenbuf[1]) { | |
2763 | if (s == PL_bufend) | |
bbce6d69 | 2764 | yyerror("Final @ should be \\@ or @name"); |
2765 | PREREF('@'); | |
2766 | } | |
3280af22 | 2767 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 2768 | s = skipspace(s); |
3280af22 | 2769 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 2770 | if (*s == '{') |
3280af22 | 2771 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
2772 | |
2773 | /* Warn about @ where they meant $. */ | |
599cee73 | 2774 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
2775 | if (*s == '[' || *s == '{') { |
2776 | char *t = s + 1; | |
2777 | while (*t && (isALNUM(*t) || strchr(" \t$#+-'\"", *t))) | |
2778 | t++; | |
2779 | if (*t == '}' || *t == ']') { | |
2780 | t++; | |
3280af22 | 2781 | PL_bufptr = skipspace(PL_bufptr); |
599cee73 PM |
2782 | warner(WARN_SYNTAX, |
2783 | "Scalar value %.*s better written as $%.*s", | |
3280af22 | 2784 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 2785 | } |
93a17b20 LW |
2786 | } |
2787 | } | |
463ee0b2 | 2788 | } |
3280af22 | 2789 | PL_pending_ident = '@'; |
79072805 | 2790 | TERM('@'); |
378cc40b LW |
2791 | |
2792 | case '/': /* may either be division or pattern */ | |
2793 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 2794 | if (PL_expect != XOPERATOR) { |
c277df42 | 2795 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
2796 | if (PL_oldoldbufptr == PL_last_uni |
2797 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
2798 | || memNE(PL_last_uni, "study", 5) || isALNUM(PL_last_uni[5]))) | |
c277df42 | 2799 | check_uni(); |
8782bef2 | 2800 | s = scan_pat(s,OP_MATCH); |
79072805 | 2801 | TERM(sublex_start()); |
378cc40b LW |
2802 | } |
2803 | tmp = *s++; | |
a687059c | 2804 | if (tmp == '/') |
79072805 | 2805 | Mop(OP_DIVIDE); |
378cc40b LW |
2806 | OPERATOR(tmp); |
2807 | ||
2808 | case '.': | |
51882d45 GS |
2809 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
2810 | #ifdef PERL_STRICT_CR | |
2811 | && s[1] == '\n' | |
2812 | #else | |
2813 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
2814 | #endif | |
2815 | && (s == PL_linestart || s[-1] == '\n') ) | |
2816 | { | |
3280af22 NIS |
2817 | PL_lex_formbrack = 0; |
2818 | PL_expect = XSTATE; | |
79072805 LW |
2819 | goto rightbracket; |
2820 | } | |
3280af22 | 2821 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 2822 | tmp = *s++; |
a687059c LW |
2823 | if (*s == tmp) { |
2824 | s++; | |
2f3197b3 LW |
2825 | if (*s == tmp) { |
2826 | s++; | |
79072805 | 2827 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
2828 | } |
2829 | else | |
79072805 | 2830 | yylval.ival = 0; |
378cc40b | 2831 | OPERATOR(DOTDOT); |
a687059c | 2832 | } |
3280af22 | 2833 | if (PL_expect != XOPERATOR) |
2f3197b3 | 2834 | check_uni(); |
79072805 | 2835 | Aop(OP_CONCAT); |
378cc40b LW |
2836 | } |
2837 | /* FALL THROUGH */ | |
2838 | case '0': case '1': case '2': case '3': case '4': | |
2839 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 2840 | s = scan_num(s); |
3280af22 | 2841 | if (PL_expect == XOPERATOR) |
8990e307 | 2842 | no_op("Number",s); |
79072805 LW |
2843 | TERM(THING); |
2844 | ||
2845 | case '\'': | |
8990e307 | 2846 | s = scan_str(s); |
3280af22 NIS |
2847 | if (PL_expect == XOPERATOR) { |
2848 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2849 | PL_expect = XTERM; | |
a0d0e21e LW |
2850 | depcom(); |
2851 | return ','; /* grandfather non-comma-format format */ | |
2852 | } | |
463ee0b2 | 2853 | else |
8990e307 | 2854 | no_op("String",s); |
463ee0b2 | 2855 | } |
79072805 | 2856 | if (!s) |
85e6fe83 | 2857 | missingterm((char*)0); |
79072805 LW |
2858 | yylval.ival = OP_CONST; |
2859 | TERM(sublex_start()); | |
2860 | ||
2861 | case '"': | |
8990e307 | 2862 | s = scan_str(s); |
3280af22 NIS |
2863 | if (PL_expect == XOPERATOR) { |
2864 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
2865 | PL_expect = XTERM; | |
a0d0e21e LW |
2866 | depcom(); |
2867 | return ','; /* grandfather non-comma-format format */ | |
2868 | } | |
463ee0b2 | 2869 | else |
8990e307 | 2870 | no_op("String",s); |
463ee0b2 | 2871 | } |
79072805 | 2872 | if (!s) |
85e6fe83 | 2873 | missingterm((char*)0); |
4633a7c4 | 2874 | yylval.ival = OP_CONST; |
3280af22 | 2875 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 2876 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
2877 | yylval.ival = OP_STRINGIFY; |
2878 | break; | |
2879 | } | |
2880 | } | |
79072805 LW |
2881 | TERM(sublex_start()); |
2882 | ||
2883 | case '`': | |
2884 | s = scan_str(s); | |
3280af22 | 2885 | if (PL_expect == XOPERATOR) |
8990e307 | 2886 | no_op("Backticks",s); |
79072805 | 2887 | if (!s) |
85e6fe83 | 2888 | missingterm((char*)0); |
79072805 LW |
2889 | yylval.ival = OP_BACKTICK; |
2890 | set_csh(); | |
2891 | TERM(sublex_start()); | |
2892 | ||
2893 | case '\\': | |
2894 | s++; | |
599cee73 PM |
2895 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
2896 | warner(WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", | |
2897 | *s, *s); | |
3280af22 | 2898 | if (PL_expect == XOPERATOR) |
8990e307 | 2899 | no_op("Backslash",s); |
79072805 LW |
2900 | OPERATOR(REFGEN); |
2901 | ||
2902 | case 'x': | |
3280af22 | 2903 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
2904 | s++; |
2905 | Mop(OP_REPEAT); | |
2f3197b3 | 2906 | } |
79072805 LW |
2907 | goto keylookup; |
2908 | ||
378cc40b | 2909 | case '_': |
79072805 LW |
2910 | case 'a': case 'A': |
2911 | case 'b': case 'B': | |
2912 | case 'c': case 'C': | |
2913 | case 'd': case 'D': | |
2914 | case 'e': case 'E': | |
2915 | case 'f': case 'F': | |
2916 | case 'g': case 'G': | |
2917 | case 'h': case 'H': | |
2918 | case 'i': case 'I': | |
2919 | case 'j': case 'J': | |
2920 | case 'k': case 'K': | |
2921 | case 'l': case 'L': | |
2922 | case 'm': case 'M': | |
2923 | case 'n': case 'N': | |
2924 | case 'o': case 'O': | |
2925 | case 'p': case 'P': | |
2926 | case 'q': case 'Q': | |
2927 | case 'r': case 'R': | |
2928 | case 's': case 'S': | |
2929 | case 't': case 'T': | |
2930 | case 'u': case 'U': | |
2931 | case 'v': case 'V': | |
2932 | case 'w': case 'W': | |
2933 | case 'X': | |
2934 | case 'y': case 'Y': | |
2935 | case 'z': case 'Z': | |
2936 | ||
49dc05e3 | 2937 | keylookup: { |
161b471a NIS |
2938 | gv = Nullgv; |
2939 | gvp = 0; | |
49dc05e3 | 2940 | |
3280af22 NIS |
2941 | PL_bufptr = s; |
2942 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 2943 | |
2944 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
2945 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
2946 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
2947 | (PL_tokenbuf[0] == 'q' && | |
2948 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 2949 | |
2950 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 2951 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
2952 | goto just_a_word; |
2953 | ||
3643fb5f | 2954 | d = s; |
3280af22 | 2955 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
2956 | d++; /* no comments skipped here, or s### is misparsed */ |
2957 | ||
2958 | /* Is this a label? */ | |
3280af22 NIS |
2959 | if (!tmp && PL_expect == XSTATE |
2960 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 2961 | s = d + 1; |
3280af22 | 2962 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 2963 | CLINE; |
2964 | TOKEN(LABEL); | |
3643fb5f CS |
2965 | } |
2966 | ||
2967 | /* Check for keywords */ | |
3280af22 | 2968 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
2969 | |
2970 | /* Is this a word before a => operator? */ | |
748a9306 LW |
2971 | if (strnEQ(d,"=>",2)) { |
2972 | CLINE; | |
3280af22 | 2973 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
2974 | yylval.opval->op_private = OPpCONST_BARE; |
2975 | TERM(WORD); | |
2976 | } | |
2977 | ||
a0d0e21e | 2978 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
2979 | GV *ogv = Nullgv; /* override (winner) */ |
2980 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 2981 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 2982 | CV *cv; |
3280af22 | 2983 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
2984 | (cv = GvCVu(gv))) |
2985 | { | |
2986 | if (GvIMPORTED_CV(gv)) | |
2987 | ogv = gv; | |
2988 | else if (! CvMETHOD(cv)) | |
2989 | hgv = gv; | |
2990 | } | |
2991 | if (!ogv && | |
3280af22 NIS |
2992 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
2993 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
2994 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
2995 | { | |
2996 | ogv = gv; | |
2997 | } | |
2998 | } | |
2999 | if (ogv) { | |
3000 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3001 | } |
3002 | else if (gv && !gvp | |
3003 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3004 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3005 | { |
3006 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3007 | } |
56f7f34b CS |
3008 | else { /* no override */ |
3009 | tmp = -tmp; | |
3010 | gv = Nullgv; | |
3011 | gvp = 0; | |
4944e2f7 GS |
3012 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3013 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
599cee73 PM |
3014 | warner(WARN_AMBIGUOUS, |
3015 | "Ambiguous call resolved as CORE::%s(), %s", | |
2f3ca594 | 3016 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3017 | } |
a0d0e21e LW |
3018 | } |
3019 | ||
3020 | reserved_word: | |
3021 | switch (tmp) { | |
79072805 LW |
3022 | |
3023 | default: /* not a keyword */ | |
93a17b20 | 3024 | just_a_word: { |
96e4d5b1 | 3025 | SV *sv; |
3280af22 | 3026 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3027 | |
3028 | /* Get the rest if it looks like a package qualifier */ | |
3029 | ||
a0d0e21e | 3030 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3031 | STRLEN morelen; |
3280af22 | 3032 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3033 | TRUE, &morelen); |
3034 | if (!morelen) | |
3280af22 | 3035 | croak("Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3036 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3037 | len += morelen; |
a0d0e21e | 3038 | } |
8990e307 | 3039 | |
3280af22 NIS |
3040 | if (PL_expect == XOPERATOR) { |
3041 | if (PL_bufptr == PL_linestart) { | |
3042 | PL_curcop->cop_line--; | |
599cee73 | 3043 | warner(WARN_SEMICOLON, warn_nosemi); |
3280af22 | 3044 | PL_curcop->cop_line++; |
463ee0b2 LW |
3045 | } |
3046 | else | |
54310121 | 3047 | no_op("Bareword",s); |
463ee0b2 | 3048 | } |
8990e307 | 3049 | |
c3e0f903 GS |
3050 | /* Look for a subroutine with this name in current package, |
3051 | unless name is "Foo::", in which case Foo is a bearword | |
3052 | (and a package name). */ | |
3053 | ||
3054 | if (len > 2 && | |
3280af22 | 3055 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3056 | { |
599cee73 PM |
3057 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
3058 | warner(WARN_UNSAFE, | |
3059 | "Bareword \"%s\" refers to nonexistent package", | |
3280af22 | 3060 | PL_tokenbuf); |
c3e0f903 | 3061 | len -= 2; |
3280af22 | 3062 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3063 | gv = Nullgv; |
3064 | gvp = 0; | |
3065 | } | |
3066 | else { | |
3067 | len = 0; | |
3068 | if (!gv) | |
3280af22 | 3069 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3070 | } |
3071 | ||
3072 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3073 | |
49dc05e3 GS |
3074 | if (gvp) { |
3075 | sv = newSVpv("CORE::GLOBAL::",14); | |
3280af22 | 3076 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3077 | } |
3078 | else | |
3280af22 | 3079 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3080 | |
a0d0e21e LW |
3081 | /* Presume this is going to be a bareword of some sort. */ |
3082 | ||
3083 | CLINE; | |
49dc05e3 | 3084 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3085 | yylval.opval->op_private = OPpCONST_BARE; |
3086 | ||
c3e0f903 GS |
3087 | /* And if "Foo::", then that's what it certainly is. */ |
3088 | ||
3089 | if (len) | |
3090 | goto safe_bareword; | |
3091 | ||
8990e307 LW |
3092 | /* See if it's the indirect object for a list operator. */ |
3093 | ||
3280af22 NIS |
3094 | if (PL_oldoldbufptr && |
3095 | PL_oldoldbufptr < PL_bufptr && | |
3096 | (PL_oldoldbufptr == PL_last_lop || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3097 | /* NO SKIPSPACE BEFORE HERE! */ |
3280af22 NIS |
3098 | (PL_expect == XREF |
3099 | || ((opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF | |
3100 | || (PL_last_lop_op == OP_ENTERSUB | |
3101 | && PL_last_proto | |
3102 | && PL_last_proto[PL_last_proto[0] == ';' ? 1 : 0] == '*')) ) | |
a0d0e21e | 3103 | { |
748a9306 LW |
3104 | bool immediate_paren = *s == '('; |
3105 | ||
a0d0e21e LW |
3106 | /* (Now we can afford to cross potential line boundary.) */ |
3107 | s = skipspace(s); | |
3108 | ||
3109 | /* Two barewords in a row may indicate method call. */ | |
3110 | ||
3111 | if ((isALPHA(*s) || *s == '$') && (tmp=intuit_method(s,gv))) | |
3112 | return tmp; | |
3113 | ||
3114 | /* If not a declared subroutine, it's an indirect object. */ | |
3115 | /* (But it's an indir obj regardless for sort.) */ | |
3116 | ||
3280af22 | 3117 | if ((PL_last_lop_op == OP_SORT || |
8ebc5c01 | 3118 | (!immediate_paren && (!gv || !GvCVu(gv))) ) && |
3280af22 NIS |
3119 | (PL_last_lop_op != OP_MAPSTART && PL_last_lop_op != OP_GREPSTART)){ |
3120 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; | |
748a9306 | 3121 | goto bareword; |
93a17b20 LW |
3122 | } |
3123 | } | |
8990e307 LW |
3124 | |
3125 | /* If followed by a paren, it's certainly a subroutine. */ | |
3126 | ||
3280af22 | 3127 | PL_expect = XOPERATOR; |
8990e307 | 3128 | s = skipspace(s); |
93a17b20 | 3129 | if (*s == '(') { |
79072805 | 3130 | CLINE; |
96e4d5b1 | 3131 | if (gv && GvCVu(gv)) { |
3132 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
3133 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { | |
3134 | s = d + 1; | |
3135 | goto its_constant; | |
3136 | } | |
3137 | } | |
3280af22 NIS |
3138 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3139 | PL_expect = XOPERATOR; | |
93a17b20 | 3140 | force_next(WORD); |
c07a80fd | 3141 | yylval.ival = 0; |
463ee0b2 | 3142 | TOKEN('&'); |
79072805 | 3143 | } |
93a17b20 | 3144 | |
a0d0e21e | 3145 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3146 | |
8ebc5c01 | 3147 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3148 | PL_last_lop = PL_oldbufptr; |
3149 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3150 | PREBLOCK(METHOD); |
463ee0b2 LW |
3151 | } |
3152 | ||
8990e307 LW |
3153 | /* If followed by a bareword, see if it looks like indir obj. */ |
3154 | ||
a0d0e21e LW |
3155 | if ((isALPHA(*s) || *s == '$') && (tmp = intuit_method(s,gv))) |
3156 | return tmp; | |
93a17b20 | 3157 | |
8990e307 LW |
3158 | /* Not a method, so call it a subroutine (if defined) */ |
3159 | ||
8ebc5c01 | 3160 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3161 | CV* cv; |
748a9306 | 3162 | if (lastchar == '-') |
c2960299 | 3163 | warn("Ambiguous use of -%s resolved as -&%s()", |
3280af22 NIS |
3164 | PL_tokenbuf, PL_tokenbuf); |
3165 | PL_last_lop = PL_oldbufptr; | |
3166 | PL_last_lop_op = OP_ENTERSUB; | |
89bfa8cd | 3167 | /* Check for a constant sub */ |
46fc3d4c | 3168 | cv = GvCV(gv); |
96e4d5b1 | 3169 | if ((sv = cv_const_sv(cv))) { |
3170 | its_constant: | |
3171 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3172 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3173 | yylval.opval->op_private = 0; | |
3174 | TOKEN(WORD); | |
89bfa8cd | 3175 | } |
3176 | ||
a5f75d66 AD |
3177 | /* Resolve to GV now. */ |
3178 | op_free(yylval.opval); | |
3179 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
4633a7c4 LW |
3180 | /* Is there a prototype? */ |
3181 | if (SvPOK(cv)) { | |
3182 | STRLEN len; | |
3280af22 | 3183 | PL_last_proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3184 | if (!len) |
3185 | TERM(FUNC0SUB); | |
3280af22 | 3186 | if (strEQ(PL_last_proto, "$")) |
4633a7c4 | 3187 | OPERATOR(UNIOPSUB); |
3280af22 NIS |
3188 | if (*PL_last_proto == '&' && *s == '{') { |
3189 | sv_setpv(PL_subname,"__ANON__"); | |
4633a7c4 LW |
3190 | PREBLOCK(LSTOPSUB); |
3191 | } | |
2a841d13 | 3192 | } else |
3280af22 NIS |
3193 | PL_last_proto = NULL; |
3194 | PL_nextval[PL_nexttoke].opval = yylval.opval; | |
3195 | PL_expect = XTERM; | |
8990e307 LW |
3196 | force_next(WORD); |
3197 | TOKEN(NOAMP); | |
3198 | } | |
748a9306 | 3199 | |
3280af22 | 3200 | if (PL_hints & HINT_STRICT_SUBS && |
748a9306 | 3201 | lastchar != '-' && |
a0d0e21e | 3202 | strnNE(s,"->",2) && |
3280af22 NIS |
3203 | PL_last_lop_op != OP_TRUNCATE && /* S/F prototype in opcode.pl */ |
3204 | PL_last_lop_op != OP_ACCEPT && | |
3205 | PL_last_lop_op != OP_PIPE_OP && | |
3206 | PL_last_lop_op != OP_SOCKPAIR) | |
a0d0e21e LW |
3207 | { |
3208 | warn( | |
3209 | "Bareword \"%s\" not allowed while \"strict subs\" in use", | |
3280af22 NIS |
3210 | PL_tokenbuf); |
3211 | ++PL_error_count; | |
85e6fe83 | 3212 | } |
8990e307 LW |
3213 | |
3214 | /* Call it a bare word */ | |
3215 | ||
748a9306 | 3216 | bareword: |
599cee73 | 3217 | if (ckWARN(WARN_RESERVED)) { |
748a9306 | 3218 | if (lastchar != '-') { |
3280af22 | 3219 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; |
748a9306 | 3220 | if (!*d) |
599cee73 | 3221 | warner(WARN_RESERVED, warn_reserved, PL_tokenbuf); |
748a9306 LW |
3222 | } |
3223 | } | |
c3e0f903 GS |
3224 | |
3225 | safe_bareword: | |
748a9306 LW |
3226 | if (lastchar && strchr("*%&", lastchar)) { |
3227 | warn("Operator or semicolon missing before %c%s", | |
3280af22 | 3228 | lastchar, PL_tokenbuf); |
c2960299 | 3229 | warn("Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
3230 | lastchar, lastchar); |
3231 | } | |
93a17b20 | 3232 | TOKEN(WORD); |
79072805 | 3233 | } |
79072805 | 3234 | |
68dc0745 | 3235 | case KEY___FILE__: |
46fc3d4c | 3236 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3237 | newSVsv(GvSV(PL_curcop->cop_filegv))); |
46fc3d4c | 3238 | TERM(THING); |
3239 | ||
79072805 | 3240 | case KEY___LINE__: |
46fc3d4c | 3241 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
3280af22 | 3242 | newSVpvf("%ld", (long)PL_curcop->cop_line)); |
79072805 | 3243 | TERM(THING); |
68dc0745 | 3244 | |
3245 | case KEY___PACKAGE__: | |
3246 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3247 | (PL_curstash |
3248 | ? newSVsv(PL_curstname) | |
3249 | : &PL_sv_undef)); | |
79072805 | 3250 | TERM(THING); |
79072805 | 3251 | |
e50aee73 | 3252 | case KEY___DATA__: |
79072805 LW |
3253 | case KEY___END__: { |
3254 | GV *gv; | |
79072805 LW |
3255 | |
3256 | /*SUPPRESS 560*/ | |
3280af22 | 3257 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3258 | char *pname = "main"; |
3280af22 NIS |
3259 | if (PL_tokenbuf[2] == 'D') |
3260 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
46fc3d4c | 3261 | gv = gv_fetchpv(form("%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3262 | GvMULTI_on(gv); |
79072805 | 3263 | if (!GvIO(gv)) |
a0d0e21e | 3264 | GvIOp(gv) = newIO(); |
3280af22 | 3265 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3266 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3267 | { | |
3280af22 | 3268 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3269 | fcntl(fd,F_SETFD,fd >= 3); |
3270 | } | |
79072805 | 3271 | #endif |
fd049845 | 3272 | /* Mark this internal pseudo-handle as clean */ |
3273 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3274 | if (PL_preprocess) |
a0d0e21e | 3275 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3276 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3277 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3278 | else |
a0d0e21e | 3279 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3280 | PL_rsfp = Nullfp; |
79072805 LW |
3281 | } |
3282 | goto fake_eof; | |
e929a76b | 3283 | } |
de3bb511 | 3284 | |
8990e307 | 3285 | case KEY_AUTOLOAD: |
ed6116ce | 3286 | case KEY_DESTROY: |
79072805 LW |
3287 | case KEY_BEGIN: |
3288 | case KEY_END: | |
7d07dbc2 | 3289 | case KEY_INIT: |
3280af22 NIS |
3290 | if (PL_expect == XSTATE) { |
3291 | s = PL_bufptr; | |
93a17b20 | 3292 | goto really_sub; |
79072805 LW |
3293 | } |
3294 | goto just_a_word; | |
3295 | ||
a0d0e21e LW |
3296 | case KEY_CORE: |
3297 | if (*s == ':' && s[1] == ':') { | |
3298 | s += 2; | |
748a9306 | 3299 | d = s; |
3280af22 NIS |
3300 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3301 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3302 | if (tmp < 0) |
3303 | tmp = -tmp; | |
3304 | goto reserved_word; | |
3305 | } | |
3306 | goto just_a_word; | |
3307 | ||
463ee0b2 LW |
3308 | case KEY_abs: |
3309 | UNI(OP_ABS); | |
3310 | ||
79072805 LW |
3311 | case KEY_alarm: |
3312 | UNI(OP_ALARM); | |
3313 | ||
3314 | case KEY_accept: | |
a0d0e21e | 3315 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3316 | |
463ee0b2 LW |
3317 | case KEY_and: |
3318 | OPERATOR(ANDOP); | |
3319 | ||
79072805 | 3320 | case KEY_atan2: |
a0d0e21e | 3321 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3322 | |
79072805 | 3323 | case KEY_bind: |
a0d0e21e | 3324 | LOP(OP_BIND,XTERM); |
79072805 LW |
3325 | |
3326 | case KEY_binmode: | |
3327 | UNI(OP_BINMODE); | |
3328 | ||
3329 | case KEY_bless: | |
a0d0e21e | 3330 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3331 | |
3332 | case KEY_chop: | |
3333 | UNI(OP_CHOP); | |
3334 | ||
3335 | case KEY_continue: | |
3336 | PREBLOCK(CONTINUE); | |
3337 | ||
3338 | case KEY_chdir: | |
85e6fe83 | 3339 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3340 | UNI(OP_CHDIR); |
3341 | ||
3342 | case KEY_close: | |
3343 | UNI(OP_CLOSE); | |
3344 | ||
3345 | case KEY_closedir: | |
3346 | UNI(OP_CLOSEDIR); | |
3347 | ||
3348 | case KEY_cmp: | |
3349 | Eop(OP_SCMP); | |
3350 | ||
3351 | case KEY_caller: | |
3352 | UNI(OP_CALLER); | |
3353 | ||
3354 | case KEY_crypt: | |
3355 | #ifdef FCRYPT | |
6b88bc9c | 3356 | if (!PL_cryptseen++) |
de3bb511 | 3357 | init_des(); |
a687059c | 3358 | #endif |
a0d0e21e | 3359 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3360 | |
3361 | case KEY_chmod: | |
599cee73 | 3362 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3363 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
3364 | if (*d != '0' && isDIGIT(*d)) |
3365 | yywarn("chmod: mode argument is missing initial 0"); | |
3366 | } | |
a0d0e21e | 3367 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3368 | |
3369 | case KEY_chown: | |
a0d0e21e | 3370 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3371 | |
3372 | case KEY_connect: | |
a0d0e21e | 3373 | LOP(OP_CONNECT,XTERM); |
79072805 | 3374 | |
463ee0b2 LW |
3375 | case KEY_chr: |
3376 | UNI(OP_CHR); | |
3377 | ||
79072805 LW |
3378 | case KEY_cos: |
3379 | UNI(OP_COS); | |
3380 | ||
3381 | case KEY_chroot: | |
3382 | UNI(OP_CHROOT); | |
3383 | ||
3384 | case KEY_do: | |
3385 | s = skipspace(s); | |
3386 | if (*s == '{') | |
a0d0e21e | 3387 | PRETERMBLOCK(DO); |
79072805 | 3388 | if (*s != '\'') |
a0d0e21e | 3389 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3390 | OPERATOR(DO); |
79072805 LW |
3391 | |
3392 | case KEY_die: | |
3280af22 | 3393 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3394 | LOP(OP_DIE,XTERM); |
79072805 LW |
3395 | |
3396 | case KEY_defined: | |
3397 | UNI(OP_DEFINED); | |
3398 | ||
3399 | case KEY_delete: | |
a0d0e21e | 3400 | UNI(OP_DELETE); |
79072805 LW |
3401 | |
3402 | case KEY_dbmopen: | |
a0d0e21e LW |
3403 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3404 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3405 | |
3406 | case KEY_dbmclose: | |
3407 | UNI(OP_DBMCLOSE); | |
3408 | ||
3409 | case KEY_dump: | |
a0d0e21e | 3410 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3411 | LOOPX(OP_DUMP); |
3412 | ||
3413 | case KEY_else: | |
3414 | PREBLOCK(ELSE); | |
3415 | ||
3416 | case KEY_elsif: | |
3280af22 | 3417 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3418 | OPERATOR(ELSIF); |
3419 | ||
3420 | case KEY_eq: | |
3421 | Eop(OP_SEQ); | |
3422 | ||
a0d0e21e LW |
3423 | case KEY_exists: |
3424 | UNI(OP_EXISTS); | |
3425 | ||
79072805 LW |
3426 | case KEY_exit: |
3427 | UNI(OP_EXIT); | |
3428 | ||
3429 | case KEY_eval: | |
79072805 | 3430 | s = skipspace(s); |
3280af22 | 3431 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3432 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3433 | |
3434 | case KEY_eof: | |
3435 | UNI(OP_EOF); | |
3436 | ||
3437 | case KEY_exp: | |
3438 | UNI(OP_EXP); | |
3439 | ||
3440 | case KEY_each: | |
3441 | UNI(OP_EACH); | |
3442 | ||
3443 | case KEY_exec: | |
3444 | set_csh(); | |
a0d0e21e | 3445 | LOP(OP_EXEC,XREF); |
79072805 LW |
3446 | |
3447 | case KEY_endhostent: | |
3448 | FUN0(OP_EHOSTENT); | |
3449 | ||
3450 | case KEY_endnetent: | |
3451 | FUN0(OP_ENETENT); | |
3452 | ||
3453 | case KEY_endservent: | |
3454 | FUN0(OP_ESERVENT); | |
3455 | ||
3456 | case KEY_endprotoent: | |
3457 | FUN0(OP_EPROTOENT); | |
3458 | ||
3459 | case KEY_endpwent: | |
3460 | FUN0(OP_EPWENT); | |
3461 | ||
3462 | case KEY_endgrent: | |
3463 | FUN0(OP_EGRENT); | |
3464 | ||
3465 | case KEY_for: | |
3466 | case KEY_foreach: | |
3280af22 | 3467 | yylval.ival = PL_curcop->cop_line; |
55497cff | 3468 | s = skipspace(s); |
3280af22 | 3469 | if (PL_expect == XSTATE && isIDFIRST(*s)) { |
55497cff | 3470 | char *p = s; |
3280af22 | 3471 | if ((PL_bufend - p) >= 3 && |
55497cff | 3472 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3473 | p += 2; | |
3474 | p = skipspace(p); | |
3475 | if (isIDFIRST(*p)) | |
3476 | croak("Missing $ on loop variable"); | |
3477 | } | |
79072805 LW |
3478 | OPERATOR(FOR); |
3479 | ||
3480 | case KEY_formline: | |
a0d0e21e | 3481 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3482 | |
3483 | case KEY_fork: | |
3484 | FUN0(OP_FORK); | |
3485 | ||
3486 | case KEY_fcntl: | |
a0d0e21e | 3487 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3488 | |
3489 | case KEY_fileno: | |
3490 | UNI(OP_FILENO); | |
3491 | ||
3492 | case KEY_flock: | |
a0d0e21e | 3493 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
3494 | |
3495 | case KEY_gt: | |
3496 | Rop(OP_SGT); | |
3497 | ||
3498 | case KEY_ge: | |
3499 | Rop(OP_SGE); | |
3500 | ||
3501 | case KEY_grep: | |
a0d0e21e | 3502 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
3503 | |
3504 | case KEY_goto: | |
a0d0e21e | 3505 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3506 | LOOPX(OP_GOTO); |
3507 | ||
3508 | case KEY_gmtime: | |
3509 | UNI(OP_GMTIME); | |
3510 | ||
3511 | case KEY_getc: | |
3512 | UNI(OP_GETC); | |
3513 | ||
3514 | case KEY_getppid: | |
3515 | FUN0(OP_GETPPID); | |
3516 | ||
3517 | case KEY_getpgrp: | |
3518 | UNI(OP_GETPGRP); | |
3519 | ||
3520 | case KEY_getpriority: | |
a0d0e21e | 3521 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
3522 | |
3523 | case KEY_getprotobyname: | |
3524 | UNI(OP_GPBYNAME); | |
3525 | ||
3526 | case KEY_getprotobynumber: | |
a0d0e21e | 3527 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
3528 | |
3529 | case KEY_getprotoent: | |
3530 | FUN0(OP_GPROTOENT); | |
3531 | ||
3532 | case KEY_getpwent: | |
3533 | FUN0(OP_GPWENT); | |
3534 | ||
3535 | case KEY_getpwnam: | |
ff68c719 | 3536 | UNI(OP_GPWNAM); |
79072805 LW |
3537 | |
3538 | case KEY_getpwuid: | |
ff68c719 | 3539 | UNI(OP_GPWUID); |
79072805 LW |
3540 | |
3541 | case KEY_getpeername: | |
3542 | UNI(OP_GETPEERNAME); | |
3543 | ||
3544 | case KEY_gethostbyname: | |
3545 | UNI(OP_GHBYNAME); | |
3546 | ||
3547 | case KEY_gethostbyaddr: | |
a0d0e21e | 3548 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
3549 | |
3550 | case KEY_gethostent: | |
3551 | FUN0(OP_GHOSTENT); | |
3552 | ||
3553 | case KEY_getnetbyname: | |
3554 | UNI(OP_GNBYNAME); | |
3555 | ||
3556 | case KEY_getnetbyaddr: | |
a0d0e21e | 3557 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
3558 | |
3559 | case KEY_getnetent: | |
3560 | FUN0(OP_GNETENT); | |
3561 | ||
3562 | case KEY_getservbyname: | |
a0d0e21e | 3563 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
3564 | |
3565 | case KEY_getservbyport: | |
a0d0e21e | 3566 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
3567 | |
3568 | case KEY_getservent: | |
3569 | FUN0(OP_GSERVENT); | |
3570 | ||
3571 | case KEY_getsockname: | |
3572 | UNI(OP_GETSOCKNAME); | |
3573 | ||
3574 | case KEY_getsockopt: | |
a0d0e21e | 3575 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
3576 | |
3577 | case KEY_getgrent: | |
3578 | FUN0(OP_GGRENT); | |
3579 | ||
3580 | case KEY_getgrnam: | |
ff68c719 | 3581 | UNI(OP_GGRNAM); |
79072805 LW |
3582 | |
3583 | case KEY_getgrgid: | |
ff68c719 | 3584 | UNI(OP_GGRGID); |
79072805 LW |
3585 | |
3586 | case KEY_getlogin: | |
3587 | FUN0(OP_GETLOGIN); | |
3588 | ||
93a17b20 | 3589 | case KEY_glob: |
a0d0e21e LW |
3590 | set_csh(); |
3591 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 3592 | |
79072805 LW |
3593 | case KEY_hex: |
3594 | UNI(OP_HEX); | |
3595 | ||
3596 | case KEY_if: | |
3280af22 | 3597 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
3598 | OPERATOR(IF); |
3599 | ||
3600 | case KEY_index: | |
a0d0e21e | 3601 | LOP(OP_INDEX,XTERM); |
79072805 LW |
3602 | |
3603 | case KEY_int: | |
3604 | UNI(OP_INT); | |
3605 | ||
3606 | case KEY_ioctl: | |
a0d0e21e | 3607 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
3608 | |
3609 | case KEY_join: | |
a0d0e21e | 3610 | LOP(OP_JOIN,XTERM); |
79072805 LW |
3611 | |
3612 | case KEY_keys: | |
3613 | UNI(OP_KEYS); | |
3614 | ||
3615 | case KEY_kill: | |
a0d0e21e | 3616 | LOP(OP_KILL,XTERM); |
79072805 LW |
3617 | |
3618 | case KEY_last: | |
a0d0e21e | 3619 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 3620 | LOOPX(OP_LAST); |
a0d0e21e | 3621 | |
79072805 LW |
3622 | case KEY_lc: |
3623 | UNI(OP_LC); | |
3624 | ||
3625 | case KEY_lcfirst: | |
3626 | UNI(OP_LCFIRST); | |
3627 | ||
3628 | case KEY_local: | |
3629 | OPERATOR(LOCAL); | |
3630 | ||
3631 | case KEY_length: | |
3632 | UNI(OP_LENGTH); | |
3633 | ||
3634 | case KEY_lt: | |
3635 | Rop(OP_SLT); | |
3636 | ||
3637 | case KEY_le: | |
3638 | Rop(OP_SLE); | |
3639 | ||
3640 | case KEY_localtime: | |
3641 | UNI(OP_LOCALTIME); | |
3642 | ||
3643 | case KEY_log: | |
3644 | UNI(OP_LOG); | |
3645 | ||
3646 | case KEY_link: | |
a0d0e21e | 3647 | LOP(OP_LINK,XTERM); |
79072805 LW |
3648 | |
3649 | case KEY_listen: | |
a0d0e21e | 3650 | LOP(OP_LISTEN,XTERM); |
79072805 | 3651 | |
c0329465 MB |
3652 | case KEY_lock: |
3653 | UNI(OP_LOCK); | |
3654 | ||
79072805 LW |
3655 | case KEY_lstat: |
3656 | UNI(OP_LSTAT); | |
3657 | ||
3658 | case KEY_m: | |
8782bef2 | 3659 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
3660 | TERM(sublex_start()); |
3661 | ||
a0d0e21e LW |
3662 | case KEY_map: |
3663 | LOP(OP_MAPSTART,XREF); | |
3664 | ||
79072805 | 3665 | case KEY_mkdir: |
a0d0e21e | 3666 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
3667 | |
3668 | case KEY_msgctl: | |
a0d0e21e | 3669 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
3670 | |
3671 | case KEY_msgget: | |
a0d0e21e | 3672 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
3673 | |
3674 | case KEY_msgrcv: | |
a0d0e21e | 3675 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
3676 | |
3677 | case KEY_msgsnd: | |
a0d0e21e | 3678 | LOP(OP_MSGSND,XTERM); |
79072805 | 3679 | |
93a17b20 | 3680 | case KEY_my: |
3280af22 | 3681 | PL_in_my = TRUE; |
c750a3ec MB |
3682 | s = skipspace(s); |
3683 | if (isIDFIRST(*s)) { | |
3280af22 NIS |
3684 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
3685 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); | |
3686 | if (!PL_in_my_stash) { | |
c750a3ec | 3687 | char tmpbuf[1024]; |
3280af22 NIS |
3688 | PL_bufptr = s; |
3689 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
3690 | yyerror(tmpbuf); |
3691 | } | |
3692 | } | |
55497cff | 3693 | OPERATOR(MY); |
93a17b20 | 3694 | |
79072805 | 3695 | case KEY_next: |
a0d0e21e | 3696 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3697 | LOOPX(OP_NEXT); |
3698 | ||
3699 | case KEY_ne: | |
3700 | Eop(OP_SNE); | |
3701 | ||
a0d0e21e | 3702 | case KEY_no: |
3280af22 | 3703 | if (PL_expect != XSTATE) |
a0d0e21e LW |
3704 | yyerror("\"no\" not allowed in expression"); |
3705 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 3706 | s = force_version(s); |
a0d0e21e LW |
3707 | yylval.ival = 0; |
3708 | OPERATOR(USE); | |
3709 | ||
3710 | case KEY_not: | |
3711 | OPERATOR(NOTOP); | |
3712 | ||
79072805 | 3713 | case KEY_open: |
93a17b20 LW |
3714 | s = skipspace(s); |
3715 | if (isIDFIRST(*s)) { | |
3716 | char *t; | |
3717 | for (d = s; isALNUM(*d); d++) ; | |
3718 | t = skipspace(d); | |
3719 | if (strchr("|&*+-=!?:.", *t)) | |
3720 | warn("Precedence problem: open %.*s should be open(%.*s)", | |
3721 | d-s,s, d-s,s); | |
3722 | } | |
a0d0e21e | 3723 | LOP(OP_OPEN,XTERM); |
79072805 | 3724 | |
463ee0b2 | 3725 | case KEY_or: |
a0d0e21e | 3726 | yylval.ival = OP_OR; |
463ee0b2 LW |
3727 | OPERATOR(OROP); |
3728 | ||
79072805 LW |
3729 | case KEY_ord: |
3730 | UNI(OP_ORD); | |
3731 | ||
3732 | case KEY_oct: | |
3733 | UNI(OP_OCT); | |
3734 | ||
3735 | case KEY_opendir: | |
a0d0e21e | 3736 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
3737 | |
3738 | case KEY_print: | |
3280af22 | 3739 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 3740 | LOP(OP_PRINT,XREF); |
79072805 LW |
3741 | |
3742 | case KEY_printf: | |
3280af22 | 3743 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 3744 | LOP(OP_PRTF,XREF); |
79072805 | 3745 | |
c07a80fd | 3746 | case KEY_prototype: |
3747 | UNI(OP_PROTOTYPE); | |
3748 | ||
79072805 | 3749 | case KEY_push: |
a0d0e21e | 3750 | LOP(OP_PUSH,XTERM); |
79072805 LW |
3751 | |
3752 | case KEY_pop: | |
3753 | UNI(OP_POP); | |
3754 | ||
a0d0e21e LW |
3755 | case KEY_pos: |
3756 | UNI(OP_POS); | |
3757 | ||
79072805 | 3758 | case KEY_pack: |
a0d0e21e | 3759 | LOP(OP_PACK,XTERM); |
79072805 LW |
3760 | |
3761 | case KEY_package: | |
a0d0e21e | 3762 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
3763 | OPERATOR(PACKAGE); |
3764 | ||
3765 | case KEY_pipe: | |
a0d0e21e | 3766 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
3767 | |
3768 | case KEY_q: | |
3769 | s = scan_str(s); | |
3770 | if (!s) | |
85e6fe83 | 3771 | missingterm((char*)0); |
79072805 LW |
3772 | yylval.ival = OP_CONST; |
3773 | TERM(sublex_start()); | |
3774 | ||
a0d0e21e LW |
3775 | case KEY_quotemeta: |
3776 | UNI(OP_QUOTEMETA); | |
3777 | ||
8990e307 LW |
3778 | case KEY_qw: |
3779 | s = scan_str(s); | |
3780 | if (!s) | |
85e6fe83 | 3781 | missingterm((char*)0); |
599cee73 | 3782 | if (ckWARN(WARN_SYNTAX) && SvLEN(PL_lex_stuff)) { |
3280af22 | 3783 | d = SvPV_force(PL_lex_stuff, len); |
55497cff | 3784 | for (; len; --len, ++d) { |
3785 | if (*d == ',') { | |
599cee73 PM |
3786 | warner(WARN_SYNTAX, |
3787 | "Possible attempt to separate words with commas"); | |
55497cff | 3788 | break; |
3789 | } | |
3790 | if (*d == '#') { | |
599cee73 PM |
3791 | warner(WARN_SYNTAX, |
3792 | "Possible attempt to put comments in qw() list"); | |
55497cff | 3793 | break; |
3794 | } | |
3795 | } | |
3796 | } | |
8990e307 | 3797 | force_next(')'); |
3280af22 NIS |
3798 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, tokeq(PL_lex_stuff)); |
3799 | PL_lex_stuff = Nullsv; | |
8990e307 LW |
3800 | force_next(THING); |
3801 | force_next(','); | |
3280af22 | 3802 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(" ",1)); |
8990e307 LW |
3803 | force_next(THING); |
3804 | force_next('('); | |
a0d0e21e LW |
3805 | yylval.ival = OP_SPLIT; |
3806 | CLINE; | |
3280af22 NIS |
3807 | PL_expect = XTERM; |
3808 | PL_bufptr = s; | |
3809 | PL_last_lop = PL_oldbufptr; | |
3810 | PL_last_lop_op = OP_SPLIT; | |
a0d0e21e | 3811 | return FUNC; |
8990e307 | 3812 | |
79072805 LW |
3813 | case KEY_qq: |
3814 | s = scan_str(s); | |
3815 | if (!s) | |
85e6fe83 | 3816 | missingterm((char*)0); |
a0d0e21e | 3817 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
3818 | if (SvIVX(PL_lex_stuff) == '\'') |
3819 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
3820 | TERM(sublex_start()); |
3821 | ||
8782bef2 GB |
3822 | case KEY_qr: |
3823 | s = scan_pat(s,OP_QR); | |
3824 | TERM(sublex_start()); | |
3825 | ||
79072805 LW |
3826 | case KEY_qx: |
3827 | s = scan_str(s); | |
3828 | if (!s) | |
85e6fe83 | 3829 | missingterm((char*)0); |
79072805 LW |
3830 | yylval.ival = OP_BACKTICK; |
3831 | set_csh(); | |
3832 | TERM(sublex_start()); | |
3833 | ||
3834 | case KEY_return: | |
3835 | OLDLOP(OP_RETURN); | |
3836 | ||
3837 | case KEY_require: | |
3280af22 | 3838 | *PL_tokenbuf = '\0'; |
a0d0e21e | 3839 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
3280af22 NIS |
3840 | if (isIDFIRST(*PL_tokenbuf)) |
3841 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); | |
748a9306 | 3842 | else if (*s == '<') |
a0d0e21e | 3843 | yyerror("<> should be quotes"); |
463ee0b2 | 3844 | UNI(OP_REQUIRE); |
79072805 LW |
3845 | |
3846 | case KEY_reset: | |
3847 | UNI(OP_RESET); | |
3848 | ||
3849 | case KEY_redo: | |
a0d0e21e | 3850 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3851 | LOOPX(OP_REDO); |
3852 | ||
3853 | case KEY_rename: | |
a0d0e21e | 3854 | LOP(OP_RENAME,XTERM); |
79072805 LW |
3855 | |
3856 | case KEY_rand: | |
3857 | UNI(OP_RAND); | |
3858 | ||
3859 | case KEY_rmdir: | |
3860 | UNI(OP_RMDIR); | |
3861 | ||
3862 | case KEY_rindex: | |
a0d0e21e | 3863 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
3864 | |
3865 | case KEY_read: | |
a0d0e21e | 3866 | LOP(OP_READ,XTERM); |
79072805 LW |
3867 | |
3868 | case KEY_readdir: | |
3869 | UNI(OP_READDIR); | |
3870 | ||
93a17b20 LW |
3871 | case KEY_readline: |
3872 | set_csh(); | |
3873 | UNI(OP_READLINE); | |
3874 | ||
3875 | case KEY_readpipe: | |
3876 | set_csh(); | |
3877 | UNI(OP_BACKTICK); | |
3878 | ||
79072805 LW |
3879 | case KEY_rewinddir: |
3880 | UNI(OP_REWINDDIR); | |
3881 | ||
3882 | case KEY_recv: | |
a0d0e21e | 3883 | LOP(OP_RECV,XTERM); |
79072805 LW |
3884 | |
3885 | case KEY_reverse: | |
a0d0e21e | 3886 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
3887 | |
3888 | case KEY_readlink: | |
3889 | UNI(OP_READLINK); | |
3890 | ||
3891 | case KEY_ref: | |
3892 | UNI(OP_REF); | |
3893 | ||
3894 | case KEY_s: | |
3895 | s = scan_subst(s); | |
3896 | if (yylval.opval) | |
3897 | TERM(sublex_start()); | |
3898 | else | |
3899 | TOKEN(1); /* force error */ | |
3900 | ||
a0d0e21e LW |
3901 | case KEY_chomp: |
3902 | UNI(OP_CHOMP); | |
3903 | ||
79072805 LW |
3904 | case KEY_scalar: |
3905 | UNI(OP_SCALAR); | |
3906 | ||
3907 | case KEY_select: | |
a0d0e21e | 3908 | LOP(OP_SELECT,XTERM); |
79072805 LW |
3909 | |
3910 | case KEY_seek: | |
a0d0e21e | 3911 | LOP(OP_SEEK,XTERM); |
79072805 LW |
3912 | |
3913 | case KEY_semctl: | |
a0d0e21e | 3914 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
3915 | |
3916 | case KEY_semget: | |
a0d0e21e | 3917 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
3918 | |
3919 | case KEY_semop: | |
a0d0e21e | 3920 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
3921 | |
3922 | case KEY_send: | |
a0d0e21e | 3923 | LOP(OP_SEND,XTERM); |
79072805 LW |
3924 | |
3925 | case KEY_setpgrp: | |
a0d0e21e | 3926 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
3927 | |
3928 | case KEY_setpriority: | |
a0d0e21e | 3929 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
3930 | |
3931 | case KEY_sethostent: | |
ff68c719 | 3932 | UNI(OP_SHOSTENT); |
79072805 LW |
3933 | |
3934 | case KEY_setnetent: | |
ff68c719 | 3935 | UNI(OP_SNETENT); |
79072805 LW |
3936 | |
3937 | case KEY_setservent: | |
ff68c719 | 3938 | UNI(OP_SSERVENT); |
79072805 LW |
3939 | |
3940 | case KEY_setprotoent: | |
ff68c719 | 3941 | UNI(OP_SPROTOENT); |
79072805 LW |
3942 | |
3943 | case KEY_setpwent: | |
3944 | FUN0(OP_SPWENT); | |
3945 | ||
3946 | case KEY_setgrent: | |
3947 | FUN0(OP_SGRENT); | |
3948 | ||
3949 | case KEY_seekdir: | |
a0d0e21e | 3950 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
3951 | |
3952 | case KEY_setsockopt: | |
a0d0e21e | 3953 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
3954 | |
3955 | case KEY_shift: | |
3956 | UNI(OP_SHIFT); | |
3957 | ||
3958 | case KEY_shmctl: | |
a0d0e21e | 3959 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
3960 | |
3961 | case KEY_shmget: | |
a0d0e21e | 3962 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
3963 | |
3964 | case KEY_shmread: | |
a0d0e21e | 3965 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
3966 | |
3967 | case KEY_shmwrite: | |
a0d0e21e | 3968 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
3969 | |
3970 | case KEY_shutdown: | |
a0d0e21e | 3971 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
3972 | |
3973 | case KEY_sin: | |
3974 | UNI(OP_SIN); | |
3975 | ||
3976 | case KEY_sleep: | |
3977 | UNI(OP_SLEEP); | |
3978 | ||
3979 | case KEY_socket: | |
a0d0e21e | 3980 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
3981 | |
3982 | case KEY_socketpair: | |
a0d0e21e | 3983 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
3984 | |
3985 | case KEY_sort: | |
3280af22 | 3986 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
3987 | s = skipspace(s); |
3988 | if (*s == ';' || *s == ')') /* probably a close */ | |
463ee0b2 | 3989 | croak("sort is now a reserved word"); |
3280af22 | 3990 | PL_expect = XTERM; |
15f0808c | 3991 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 3992 | LOP(OP_SORT,XREF); |
79072805 LW |
3993 | |
3994 | case KEY_split: | |
a0d0e21e | 3995 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
3996 | |
3997 | case KEY_sprintf: | |
a0d0e21e | 3998 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
3999 | |
4000 | case KEY_splice: | |
a0d0e21e | 4001 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4002 | |
4003 | case KEY_sqrt: | |
4004 | UNI(OP_SQRT); | |
4005 | ||
4006 | case KEY_srand: | |
4007 | UNI(OP_SRAND); | |
4008 | ||
4009 | case KEY_stat: | |
4010 | UNI(OP_STAT); | |
4011 | ||
4012 | case KEY_study: | |
3280af22 | 4013 | PL_sawstudy++; |
79072805 LW |
4014 | UNI(OP_STUDY); |
4015 | ||
4016 | case KEY_substr: | |
a0d0e21e | 4017 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4018 | |
4019 | case KEY_format: | |
4020 | case KEY_sub: | |
93a17b20 | 4021 | really_sub: |
79072805 | 4022 | s = skipspace(s); |
4633a7c4 | 4023 | |
463ee0b2 | 4024 | if (isIDFIRST(*s) || *s == '\'' || *s == ':') { |
3280af22 NIS |
4025 | char tmpbuf[sizeof PL_tokenbuf]; |
4026 | PL_expect = XBLOCK; | |
8903cb82 | 4027 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
463ee0b2 | 4028 | if (strchr(tmpbuf, ':')) |
3280af22 | 4029 | sv_setpv(PL_subname, tmpbuf); |
463ee0b2 | 4030 | else { |
3280af22 NIS |
4031 | sv_setsv(PL_subname,PL_curstname); |
4032 | sv_catpvn(PL_subname,"::",2); | |
4033 | sv_catpvn(PL_subname,tmpbuf,len); | |
463ee0b2 | 4034 | } |
a0d0e21e | 4035 | s = force_word(s,WORD,FALSE,TRUE,TRUE); |
4633a7c4 | 4036 | s = skipspace(s); |
79072805 | 4037 | } |
4633a7c4 | 4038 | else { |
3280af22 NIS |
4039 | PL_expect = XTERMBLOCK; |
4040 | sv_setpv(PL_subname,"?"); | |
4633a7c4 LW |
4041 | } |
4042 | ||
4043 | if (tmp == KEY_format) { | |
4044 | s = skipspace(s); | |
4045 | if (*s == '=') | |
3280af22 | 4046 | PL_lex_formbrack = PL_lex_brackets + 1; |
4633a7c4 LW |
4047 | OPERATOR(FORMAT); |
4048 | } | |
79072805 | 4049 | |
4633a7c4 LW |
4050 | /* Look for a prototype */ |
4051 | if (*s == '(') { | |
68dc0745 | 4052 | char *p; |
4053 | ||
4633a7c4 LW |
4054 | s = scan_str(s); |
4055 | if (!s) { | |
3280af22 NIS |
4056 | if (PL_lex_stuff) |
4057 | SvREFCNT_dec(PL_lex_stuff); | |
4058 | PL_lex_stuff = Nullsv; | |
4633a7c4 LW |
4059 | croak("Prototype not terminated"); |
4060 | } | |
68dc0745 | 4061 | /* strip spaces */ |
3280af22 | 4062 | d = SvPVX(PL_lex_stuff); |
68dc0745 | 4063 | tmp = 0; |
4064 | for (p = d; *p; ++p) { | |
4065 | if (!isSPACE(*p)) | |
4066 | d[tmp++] = *p; | |
4067 | } | |
4068 | d[tmp] = '\0'; | |
3280af22 NIS |
4069 | SvCUR(PL_lex_stuff) = tmp; |
4070 | ||
4071 | PL_nexttoke++; | |
4072 | PL_nextval[1] = PL_nextval[0]; | |
4073 | PL_nexttype[1] = PL_nexttype[0]; | |
4074 | PL_nextval[0].opval = (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
4075 | PL_nexttype[0] = THING; | |
4076 | if (PL_nexttoke == 1) { | |
4077 | PL_lex_defer = PL_lex_state; | |
4078 | PL_lex_expect = PL_expect; | |
4079 | PL_lex_state = LEX_KNOWNEXT; | |
4633a7c4 | 4080 | } |
3280af22 | 4081 | PL_lex_stuff = Nullsv; |
4633a7c4 | 4082 | } |
79072805 | 4083 | |
3280af22 NIS |
4084 | if (*SvPV(PL_subname,PL_na) == '?') { |
4085 | sv_setpv(PL_subname,"__ANON__"); | |
4633a7c4 LW |
4086 | TOKEN(ANONSUB); |
4087 | } | |
4088 | PREBLOCK(SUB); | |
79072805 LW |
4089 | |
4090 | case KEY_system: | |
4091 | set_csh(); | |
a0d0e21e | 4092 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4093 | |
4094 | case KEY_symlink: | |
a0d0e21e | 4095 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4096 | |
4097 | case KEY_syscall: | |
a0d0e21e | 4098 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4099 | |
c07a80fd | 4100 | case KEY_sysopen: |
4101 | LOP(OP_SYSOPEN,XTERM); | |
4102 | ||
137443ea | 4103 | case KEY_sysseek: |
4104 | LOP(OP_SYSSEEK,XTERM); | |
4105 | ||
79072805 | 4106 | case KEY_sysread: |
a0d0e21e | 4107 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4108 | |
4109 | case KEY_syswrite: | |
a0d0e21e | 4110 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4111 | |
4112 | case KEY_tr: | |
4113 | s = scan_trans(s); | |
4114 | TERM(sublex_start()); | |
4115 | ||
4116 | case KEY_tell: | |
4117 | UNI(OP_TELL); | |
4118 | ||
4119 | case KEY_telldir: | |
4120 | UNI(OP_TELLDIR); | |
4121 | ||
463ee0b2 | 4122 | case KEY_tie: |
a0d0e21e | 4123 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4124 | |
c07a80fd | 4125 | case KEY_tied: |
4126 | UNI(OP_TIED); | |
4127 | ||
79072805 LW |
4128 | case KEY_time: |
4129 | FUN0(OP_TIME); | |
4130 | ||
4131 | case KEY_times: | |
4132 | FUN0(OP_TMS); | |
4133 | ||
4134 | case KEY_truncate: | |
a0d0e21e | 4135 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4136 | |
4137 | case KEY_uc: | |
4138 | UNI(OP_UC); | |
4139 | ||
4140 | case KEY_ucfirst: | |
4141 | UNI(OP_UCFIRST); | |
4142 | ||
463ee0b2 LW |
4143 | case KEY_untie: |
4144 | UNI(OP_UNTIE); | |
4145 | ||
79072805 | 4146 | case KEY_until: |
3280af22 | 4147 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4148 | OPERATOR(UNTIL); |
4149 | ||
4150 | case KEY_unless: | |
3280af22 | 4151 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4152 | OPERATOR(UNLESS); |
4153 | ||
4154 | case KEY_unlink: | |
a0d0e21e | 4155 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4156 | |
4157 | case KEY_undef: | |
4158 | UNI(OP_UNDEF); | |
4159 | ||
4160 | case KEY_unpack: | |
a0d0e21e | 4161 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4162 | |
4163 | case KEY_utime: | |
a0d0e21e | 4164 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4165 | |
4166 | case KEY_umask: | |
599cee73 | 4167 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4168 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 LW |
4169 | if (*d != '0' && isDIGIT(*d)) |
4170 | yywarn("umask: argument is missing initial 0"); | |
4171 | } | |
79072805 LW |
4172 | UNI(OP_UMASK); |
4173 | ||
4174 | case KEY_unshift: | |
a0d0e21e LW |
4175 | LOP(OP_UNSHIFT,XTERM); |
4176 | ||
4177 | case KEY_use: | |
3280af22 | 4178 | if (PL_expect != XSTATE) |
a0d0e21e | 4179 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4180 | s = skipspace(s); |
4181 | if(isDIGIT(*s)) { | |
4182 | s = force_version(s); | |
4183 | if(*s == ';' || (s = skipspace(s), *s == ';')) { | |
3280af22 | 4184 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4185 | force_next(WORD); |
4186 | } | |
4187 | } | |
4188 | else { | |
4189 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4190 | s = force_version(s); | |
4191 | } | |
a0d0e21e LW |
4192 | yylval.ival = 1; |
4193 | OPERATOR(USE); | |
79072805 LW |
4194 | |
4195 | case KEY_values: | |
4196 | UNI(OP_VALUES); | |
4197 | ||
4198 | case KEY_vec: | |
3280af22 | 4199 | PL_sawvec = TRUE; |
a0d0e21e | 4200 | LOP(OP_VEC,XTERM); |
79072805 LW |
4201 | |
4202 | case KEY_while: | |
3280af22 | 4203 | yylval.ival = PL_curcop->cop_line; |
79072805 LW |
4204 | OPERATOR(WHILE); |
4205 | ||
4206 | case KEY_warn: | |
3280af22 | 4207 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4208 | LOP(OP_WARN,XTERM); |
79072805 LW |
4209 | |
4210 | case KEY_wait: | |
4211 | FUN0(OP_WAIT); | |
4212 | ||
4213 | case KEY_waitpid: | |
a0d0e21e | 4214 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4215 | |
4216 | case KEY_wantarray: | |
4217 | FUN0(OP_WANTARRAY); | |
4218 | ||
4219 | case KEY_write: | |
9d116dd7 JH |
4220 | #ifdef EBCDIC |
4221 | { | |
4222 | static char ctl_l[2]; | |
4223 | ||
4224 | if (ctl_l[0] == '\0') | |
4225 | ctl_l[0] = toCTRL('L'); | |
4226 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4227 | } | |
4228 | #else | |
4229 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4230 | #endif | |
79072805 LW |
4231 | UNI(OP_ENTERWRITE); |
4232 | ||
4233 | case KEY_x: | |
3280af22 | 4234 | if (PL_expect == XOPERATOR) |
79072805 LW |
4235 | Mop(OP_REPEAT); |
4236 | check_uni(); | |
4237 | goto just_a_word; | |
4238 | ||
a0d0e21e LW |
4239 | case KEY_xor: |
4240 | yylval.ival = OP_XOR; | |
4241 | OPERATOR(OROP); | |
4242 | ||
79072805 LW |
4243 | case KEY_y: |
4244 | s = scan_trans(s); | |
4245 | TERM(sublex_start()); | |
4246 | } | |
49dc05e3 | 4247 | }} |
79072805 LW |
4248 | } |
4249 | ||
4250 | I32 | |
8ac85365 | 4251 | keyword(register char *d, I32 len) |
79072805 LW |
4252 | { |
4253 | switch (*d) { | |
4254 | case '_': | |
4255 | if (d[1] == '_') { | |
a0d0e21e | 4256 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4257 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4258 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4259 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4260 | if (strEQ(d,"__END__")) return KEY___END__; |
4261 | } | |
4262 | break; | |
8990e307 LW |
4263 | case 'A': |
4264 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4265 | break; | |
79072805 | 4266 | case 'a': |
463ee0b2 LW |
4267 | switch (len) { |
4268 | case 3: | |
a0d0e21e LW |
4269 | if (strEQ(d,"and")) return -KEY_and; |
4270 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4271 | break; |
463ee0b2 | 4272 | case 5: |
a0d0e21e LW |
4273 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4274 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4275 | break; |
4276 | case 6: | |
a0d0e21e | 4277 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4278 | break; |
4279 | } | |
79072805 LW |
4280 | break; |
4281 | case 'B': | |
4282 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4283 | break; |
79072805 | 4284 | case 'b': |
a0d0e21e LW |
4285 | if (strEQ(d,"bless")) return -KEY_bless; |
4286 | if (strEQ(d,"bind")) return -KEY_bind; | |
4287 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4288 | break; | |
4289 | case 'C': | |
4290 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4291 | break; |
4292 | case 'c': | |
4293 | switch (len) { | |
4294 | case 3: | |
a0d0e21e LW |
4295 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4296 | if (strEQ(d,"chr")) return -KEY_chr; | |
4297 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4298 | break; |
4299 | case 4: | |
4300 | if (strEQ(d,"chop")) return KEY_chop; | |
4301 | break; | |
4302 | case 5: | |
a0d0e21e LW |
4303 | if (strEQ(d,"close")) return -KEY_close; |
4304 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4305 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4306 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4307 | if (strEQ(d,"chown")) return -KEY_chown; | |
4308 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4309 | break; |
4310 | case 6: | |
a0d0e21e LW |
4311 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4312 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4313 | break; |
4314 | case 7: | |
a0d0e21e | 4315 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4316 | break; |
4317 | case 8: | |
a0d0e21e LW |
4318 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4319 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4320 | break; |
4321 | } | |
4322 | break; | |
ed6116ce LW |
4323 | case 'D': |
4324 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4325 | break; | |
79072805 LW |
4326 | case 'd': |
4327 | switch (len) { | |
4328 | case 2: | |
4329 | if (strEQ(d,"do")) return KEY_do; | |
4330 | break; | |
4331 | case 3: | |
a0d0e21e | 4332 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4333 | break; |
4334 | case 4: | |
a0d0e21e | 4335 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4336 | break; |
4337 | case 6: | |
4338 | if (strEQ(d,"delete")) return KEY_delete; | |
4339 | break; | |
4340 | case 7: | |
4341 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4342 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4343 | break; |
4344 | case 8: | |
a0d0e21e | 4345 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4346 | break; |
4347 | } | |
4348 | break; | |
4349 | case 'E': | |
a0d0e21e | 4350 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4351 | if (strEQ(d,"END")) return KEY_END; |
4352 | break; | |
4353 | case 'e': | |
4354 | switch (len) { | |
4355 | case 2: | |
a0d0e21e | 4356 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4357 | break; |
4358 | case 3: | |
a0d0e21e LW |
4359 | if (strEQ(d,"eof")) return -KEY_eof; |
4360 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4361 | break; |
4362 | case 4: | |
4363 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4364 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4365 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4366 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4367 | if (strEQ(d,"each")) return KEY_each; |
4368 | break; | |
4369 | case 5: | |
4370 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4371 | break; | |
a0d0e21e LW |
4372 | case 6: |
4373 | if (strEQ(d,"exists")) return KEY_exists; | |
4633a7c4 | 4374 | if (strEQ(d,"elseif")) warn("elseif should be elsif"); |
a0d0e21e | 4375 | break; |
79072805 | 4376 | case 8: |
a0d0e21e LW |
4377 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4378 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4379 | break; |
4380 | case 9: | |
a0d0e21e | 4381 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4382 | break; |
4383 | case 10: | |
a0d0e21e LW |
4384 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4385 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4386 | break; |
4387 | case 11: | |
a0d0e21e | 4388 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4389 | break; |
a687059c | 4390 | } |
a687059c | 4391 | break; |
79072805 LW |
4392 | case 'f': |
4393 | switch (len) { | |
4394 | case 3: | |
4395 | if (strEQ(d,"for")) return KEY_for; | |
4396 | break; | |
4397 | case 4: | |
a0d0e21e | 4398 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
4399 | break; |
4400 | case 5: | |
a0d0e21e LW |
4401 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
4402 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
4403 | break; |
4404 | case 6: | |
4405 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 4406 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
4407 | break; |
4408 | case 7: | |
4409 | if (strEQ(d,"foreach")) return KEY_foreach; | |
4410 | break; | |
4411 | case 8: | |
a0d0e21e | 4412 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 4413 | break; |
378cc40b | 4414 | } |
a687059c | 4415 | break; |
79072805 LW |
4416 | case 'G': |
4417 | if (len == 2) { | |
a0d0e21e LW |
4418 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
4419 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 4420 | } |
a687059c | 4421 | break; |
79072805 | 4422 | case 'g': |
a687059c LW |
4423 | if (strnEQ(d,"get",3)) { |
4424 | d += 3; | |
4425 | if (*d == 'p') { | |
79072805 LW |
4426 | switch (len) { |
4427 | case 7: | |
a0d0e21e LW |
4428 | if (strEQ(d,"ppid")) return -KEY_getppid; |
4429 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
4430 | break; |
4431 | case 8: | |
a0d0e21e LW |
4432 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
4433 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
4434 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
4435 | break; |
4436 | case 11: | |
a0d0e21e LW |
4437 | if (strEQ(d,"peername")) return -KEY_getpeername; |
4438 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
4439 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
4440 | break; |
4441 | case 14: | |
a0d0e21e | 4442 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
4443 | break; |
4444 | case 16: | |
a0d0e21e | 4445 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
4446 | break; |
4447 | } | |
a687059c LW |
4448 | } |
4449 | else if (*d == 'h') { | |
a0d0e21e LW |
4450 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
4451 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
4452 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
4453 | } |
4454 | else if (*d == 'n') { | |
a0d0e21e LW |
4455 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
4456 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
4457 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
4458 | } |
4459 | else if (*d == 's') { | |
a0d0e21e LW |
4460 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
4461 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
4462 | if (strEQ(d,"servent")) return -KEY_getservent; | |
4463 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
4464 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
4465 | } |
4466 | else if (*d == 'g') { | |
a0d0e21e LW |
4467 | if (strEQ(d,"grent")) return -KEY_getgrent; |
4468 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
4469 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
4470 | } |
4471 | else if (*d == 'l') { | |
a0d0e21e | 4472 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 4473 | } |
a0d0e21e | 4474 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 4475 | break; |
a687059c | 4476 | } |
79072805 LW |
4477 | switch (len) { |
4478 | case 2: | |
a0d0e21e LW |
4479 | if (strEQ(d,"gt")) return -KEY_gt; |
4480 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
4481 | break; |
4482 | case 4: | |
4483 | if (strEQ(d,"grep")) return KEY_grep; | |
4484 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 4485 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
4486 | break; |
4487 | case 6: | |
a0d0e21e | 4488 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 4489 | break; |
378cc40b | 4490 | } |
a687059c | 4491 | break; |
79072805 | 4492 | case 'h': |
a0d0e21e | 4493 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 4494 | break; |
7d07dbc2 MB |
4495 | case 'I': |
4496 | if (strEQ(d,"INIT")) return KEY_INIT; | |
4497 | break; | |
79072805 LW |
4498 | case 'i': |
4499 | switch (len) { | |
4500 | case 2: | |
4501 | if (strEQ(d,"if")) return KEY_if; | |
4502 | break; | |
4503 | case 3: | |
a0d0e21e | 4504 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
4505 | break; |
4506 | case 5: | |
a0d0e21e LW |
4507 | if (strEQ(d,"index")) return -KEY_index; |
4508 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
4509 | break; |
4510 | } | |
a687059c | 4511 | break; |
79072805 | 4512 | case 'j': |
a0d0e21e | 4513 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 4514 | break; |
79072805 LW |
4515 | case 'k': |
4516 | if (len == 4) { | |
4517 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 4518 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 4519 | } |
79072805 LW |
4520 | break; |
4521 | case 'L': | |
4522 | if (len == 2) { | |
a0d0e21e LW |
4523 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
4524 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 4525 | } |
79072805 LW |
4526 | break; |
4527 | case 'l': | |
4528 | switch (len) { | |
4529 | case 2: | |
a0d0e21e LW |
4530 | if (strEQ(d,"lt")) return -KEY_lt; |
4531 | if (strEQ(d,"le")) return -KEY_le; | |
4532 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
4533 | break; |
4534 | case 3: | |
a0d0e21e | 4535 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
4536 | break; |
4537 | case 4: | |
4538 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 4539 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 4540 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 4541 | break; |
79072805 LW |
4542 | case 5: |
4543 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 4544 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
4545 | break; |
4546 | case 6: | |
a0d0e21e LW |
4547 | if (strEQ(d,"length")) return -KEY_length; |
4548 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
4549 | break; |
4550 | case 7: | |
a0d0e21e | 4551 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
4552 | break; |
4553 | case 9: | |
a0d0e21e | 4554 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
4555 | break; |
4556 | } | |
a687059c | 4557 | break; |
79072805 LW |
4558 | case 'm': |
4559 | switch (len) { | |
4560 | case 1: return KEY_m; | |
93a17b20 LW |
4561 | case 2: |
4562 | if (strEQ(d,"my")) return KEY_my; | |
4563 | break; | |
a0d0e21e LW |
4564 | case 3: |
4565 | if (strEQ(d,"map")) return KEY_map; | |
4566 | break; | |
79072805 | 4567 | case 5: |
a0d0e21e | 4568 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
4569 | break; |
4570 | case 6: | |
a0d0e21e LW |
4571 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
4572 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
4573 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
4574 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
4575 | break; |
4576 | } | |
a687059c | 4577 | break; |
79072805 | 4578 | case 'N': |
a0d0e21e | 4579 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 4580 | break; |
79072805 LW |
4581 | case 'n': |
4582 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
4583 | if (strEQ(d,"ne")) return -KEY_ne; |
4584 | if (strEQ(d,"not")) return -KEY_not; | |
4585 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 4586 | break; |
79072805 LW |
4587 | case 'o': |
4588 | switch (len) { | |
463ee0b2 | 4589 | case 2: |
a0d0e21e | 4590 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 4591 | break; |
79072805 | 4592 | case 3: |
a0d0e21e LW |
4593 | if (strEQ(d,"ord")) return -KEY_ord; |
4594 | if (strEQ(d,"oct")) return -KEY_oct; | |
72311751 | 4595 | if (strEQ(d,"our")) { deprecate("reserved word \"our\""); |
85b81015 | 4596 | return 0;} |
79072805 LW |
4597 | break; |
4598 | case 4: | |
a0d0e21e | 4599 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
4600 | break; |
4601 | case 7: | |
a0d0e21e | 4602 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 4603 | break; |
fe14fcc3 | 4604 | } |
a687059c | 4605 | break; |
79072805 LW |
4606 | case 'p': |
4607 | switch (len) { | |
4608 | case 3: | |
4609 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 4610 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
4611 | break; |
4612 | case 4: | |
4613 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
4614 | if (strEQ(d,"pack")) return -KEY_pack; |
4615 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
4616 | break; |
4617 | case 5: | |
4618 | if (strEQ(d,"print")) return KEY_print; | |
4619 | break; | |
4620 | case 6: | |
4621 | if (strEQ(d,"printf")) return KEY_printf; | |
4622 | break; | |
4623 | case 7: | |
4624 | if (strEQ(d,"package")) return KEY_package; | |
4625 | break; | |
c07a80fd | 4626 | case 9: |
4627 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 4628 | } |
79072805 LW |
4629 | break; |
4630 | case 'q': | |
4631 | if (len <= 2) { | |
4632 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 4633 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 4634 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 4635 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 4636 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 4637 | } |
a0d0e21e | 4638 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
4639 | break; |
4640 | case 'r': | |
4641 | switch (len) { | |
4642 | case 3: | |
a0d0e21e | 4643 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
4644 | break; |
4645 | case 4: | |
a0d0e21e LW |
4646 | if (strEQ(d,"read")) return -KEY_read; |
4647 | if (strEQ(d,"rand")) return -KEY_rand; | |
4648 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
4649 | if (strEQ(d,"redo")) return KEY_redo; |
4650 | break; | |
4651 | case 5: | |
a0d0e21e LW |
4652 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
4653 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
4654 | break; |
4655 | case 6: | |
4656 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
4657 | if (strEQ(d,"rename")) return -KEY_rename; |
4658 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
4659 | break; |
4660 | case 7: | |
a0d0e21e LW |
4661 | if (strEQ(d,"require")) return -KEY_require; |
4662 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
4663 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
4664 | break; |
4665 | case 8: | |
a0d0e21e LW |
4666 | if (strEQ(d,"readlink")) return -KEY_readlink; |
4667 | if (strEQ(d,"readline")) return -KEY_readline; | |
4668 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
4669 | break; |
4670 | case 9: | |
a0d0e21e | 4671 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 4672 | break; |
a687059c | 4673 | } |
79072805 LW |
4674 | break; |
4675 | case 's': | |
a687059c | 4676 | switch (d[1]) { |
79072805 | 4677 | case 0: return KEY_s; |
a687059c | 4678 | case 'c': |
79072805 | 4679 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
4680 | break; |
4681 | case 'e': | |
79072805 LW |
4682 | switch (len) { |
4683 | case 4: | |
a0d0e21e LW |
4684 | if (strEQ(d,"seek")) return -KEY_seek; |
4685 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
4686 | break; |
4687 | case 5: | |
a0d0e21e | 4688 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
4689 | break; |
4690 | case 6: | |
a0d0e21e LW |
4691 | if (strEQ(d,"select")) return -KEY_select; |
4692 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
4693 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
4694 | break; |
4695 | case 7: | |
a0d0e21e LW |
4696 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
4697 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
4698 | break; |
4699 | case 8: | |
a0d0e21e LW |
4700 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
4701 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
4702 | break; |
4703 | case 9: | |
a0d0e21e | 4704 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
4705 | break; |
4706 | case 10: | |
a0d0e21e LW |
4707 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
4708 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
4709 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
4710 | break; |
4711 | case 11: | |
a0d0e21e LW |
4712 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
4713 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
4714 | break; |
4715 | } | |
a687059c LW |
4716 | break; |
4717 | case 'h': | |
79072805 LW |
4718 | switch (len) { |
4719 | case 5: | |
4720 | if (strEQ(d,"shift")) return KEY_shift; | |
4721 | break; | |
4722 | case 6: | |
a0d0e21e LW |
4723 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
4724 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
4725 | break; |
4726 | case 7: | |
a0d0e21e | 4727 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
4728 | break; |
4729 | case 8: | |
a0d0e21e LW |
4730 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
4731 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
4732 | break; |
4733 | } | |
a687059c LW |
4734 | break; |
4735 | case 'i': | |
a0d0e21e | 4736 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
4737 | break; |
4738 | case 'l': | |
a0d0e21e | 4739 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
4740 | break; |
4741 | case 'o': | |
79072805 | 4742 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
4743 | if (strEQ(d,"socket")) return -KEY_socket; |
4744 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
4745 | break; |
4746 | case 'p': | |
79072805 | 4747 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 4748 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 4749 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
4750 | break; |
4751 | case 'q': | |
a0d0e21e | 4752 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
4753 | break; |
4754 | case 'r': | |
a0d0e21e | 4755 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
4756 | break; |
4757 | case 't': | |
a0d0e21e | 4758 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 4759 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
4760 | break; |
4761 | case 'u': | |
a0d0e21e | 4762 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 4763 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
4764 | break; |
4765 | case 'y': | |
79072805 LW |
4766 | switch (len) { |
4767 | case 6: | |
a0d0e21e | 4768 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
4769 | break; |
4770 | case 7: | |
a0d0e21e LW |
4771 | if (strEQ(d,"symlink")) return -KEY_symlink; |
4772 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 4773 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
4774 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
4775 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
4776 | break; |
4777 | case 8: | |
a0d0e21e | 4778 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 4779 | break; |
a687059c | 4780 | } |
a687059c LW |
4781 | break; |
4782 | } | |
4783 | break; | |
79072805 LW |
4784 | case 't': |
4785 | switch (len) { | |
4786 | case 2: | |
4787 | if (strEQ(d,"tr")) return KEY_tr; | |
4788 | break; | |
463ee0b2 LW |
4789 | case 3: |
4790 | if (strEQ(d,"tie")) return KEY_tie; | |
4791 | break; | |
79072805 | 4792 | case 4: |
a0d0e21e | 4793 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 4794 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 4795 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
4796 | break; |
4797 | case 5: | |
a0d0e21e | 4798 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
4799 | break; |
4800 | case 7: | |
a0d0e21e | 4801 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
4802 | break; |
4803 | case 8: | |
a0d0e21e | 4804 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 4805 | break; |
378cc40b | 4806 | } |
a687059c | 4807 | break; |
79072805 LW |
4808 | case 'u': |
4809 | switch (len) { | |
4810 | case 2: | |
a0d0e21e LW |
4811 | if (strEQ(d,"uc")) return -KEY_uc; |
4812 | break; | |
4813 | case 3: | |
4814 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
4815 | break; |
4816 | case 5: | |
4817 | if (strEQ(d,"undef")) return KEY_undef; | |
4818 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 4819 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
4820 | if (strEQ(d,"utime")) return -KEY_utime; |
4821 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
4822 | break; |
4823 | case 6: | |
4824 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
4825 | if (strEQ(d,"unpack")) return -KEY_unpack; |
4826 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
4827 | break; |
4828 | case 7: | |
4829 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 4830 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 4831 | break; |
a687059c LW |
4832 | } |
4833 | break; | |
79072805 | 4834 | case 'v': |
a0d0e21e LW |
4835 | if (strEQ(d,"values")) return -KEY_values; |
4836 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 4837 | break; |
79072805 LW |
4838 | case 'w': |
4839 | switch (len) { | |
4840 | case 4: | |
a0d0e21e LW |
4841 | if (strEQ(d,"warn")) return -KEY_warn; |
4842 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
4843 | break; |
4844 | case 5: | |
4845 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 4846 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
4847 | break; |
4848 | case 7: | |
a0d0e21e | 4849 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
4850 | break; |
4851 | case 9: | |
a0d0e21e | 4852 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 4853 | break; |
2f3197b3 | 4854 | } |
a687059c | 4855 | break; |
79072805 | 4856 | case 'x': |
a0d0e21e LW |
4857 | if (len == 1) return -KEY_x; |
4858 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 4859 | break; |
79072805 LW |
4860 | case 'y': |
4861 | if (len == 1) return KEY_y; | |
4862 | break; | |
4863 | case 'z': | |
a687059c LW |
4864 | break; |
4865 | } | |
79072805 | 4866 | return 0; |
a687059c LW |
4867 | } |
4868 | ||
76e3520e | 4869 | STATIC void |
8ac85365 | 4870 | checkcomma(register char *s, char *name, char *what) |
a687059c | 4871 | { |
2f3197b3 LW |
4872 | char *w; |
4873 | ||
d008e5eb GS |
4874 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
4875 | dTHR; /* only for ckWARN */ | |
4876 | if (ckWARN(WARN_SYNTAX)) { | |
4877 | int level = 1; | |
4878 | for (w = s+2; *w && level; w++) { | |
4879 | if (*w == '(') | |
4880 | ++level; | |
4881 | else if (*w == ')') | |
4882 | --level; | |
4883 | } | |
4884 | if (*w) | |
4885 | for (; *w && isSPACE(*w); w++) ; | |
4886 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
4887 | warner(WARN_SYNTAX, "%s (...) interpreted as function",name); | |
4888 | } | |
2f3197b3 | 4889 | } |
3280af22 | 4890 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 4891 | s++; |
a687059c LW |
4892 | if (*s == '(') |
4893 | s++; | |
3280af22 | 4894 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 4895 | s++; |
79072805 | 4896 | if (isIDFIRST(*s)) { |
2f3197b3 | 4897 | w = s++; |
de3bb511 | 4898 | while (isALNUM(*s)) |
a687059c | 4899 | s++; |
3280af22 | 4900 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 4901 | s++; |
e929a76b | 4902 | if (*s == ',') { |
463ee0b2 | 4903 | int kw; |
e929a76b | 4904 | *s = '\0'; |
4633a7c4 | 4905 | kw = keyword(w, s - w) || perl_get_cv(w, FALSE) != 0; |
e929a76b | 4906 | *s = ','; |
463ee0b2 | 4907 | if (kw) |
e929a76b | 4908 | return; |
463ee0b2 LW |
4909 | croak("No comma allowed after %s", what); |
4910 | } | |
4911 | } | |
4912 | } | |
4913 | ||
b3ac6de7 IZ |
4914 | STATIC SV * |
4915 | new_constant(char *s, STRLEN len, char *key, SV *sv, SV *pv, char *type) | |
4916 | { | |
b3ac6de7 | 4917 | dSP; |
3280af22 | 4918 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 IZ |
4919 | BINOP myop; |
4920 | SV *res; | |
4921 | bool oldcatch = CATCH_GET; | |
4922 | SV **cvp; | |
4923 | SV *cv, *typesv; | |
4924 | char buf[128]; | |
4925 | ||
4926 | if (!table) { | |
4927 | yyerror("%^H is not defined"); | |
4928 | return sv; | |
4929 | } | |
4930 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
4931 | if (!cvp || !SvOK(*cvp)) { | |
4932 | sprintf(buf,"$^H{%s} is not defined", key); | |
4933 | yyerror(buf); | |
4934 | return sv; | |
4935 | } | |
4936 | sv_2mortal(sv); /* Parent created it permanently */ | |
4937 | cv = *cvp; | |
4938 | if (!pv) | |
4939 | pv = sv_2mortal(newSVpv(s, len)); | |
4940 | if (type) | |
4941 | typesv = sv_2mortal(newSVpv(type, 0)); | |
4942 | else | |
3280af22 | 4943 | typesv = &PL_sv_undef; |
b3ac6de7 IZ |
4944 | CATCH_SET(TRUE); |
4945 | Zero(&myop, 1, BINOP); | |
4946 | myop.op_last = (OP *) &myop; | |
4947 | myop.op_next = Nullop; | |
4948 | myop.op_flags = OPf_WANT_SCALAR | OPf_STACKED; | |
4949 | ||
e788e7d3 | 4950 | PUSHSTACKi(PERLSI_OVERLOAD); |
b3ac6de7 IZ |
4951 | ENTER; |
4952 | SAVEOP(); | |
533c011a | 4953 | PL_op = (OP *) &myop; |
3280af22 | 4954 | if (PERLDB_SUB && PL_curstash != PL_debstash) |
533c011a | 4955 | PL_op->op_private |= OPpENTERSUB_DB; |
b3ac6de7 IZ |
4956 | PUTBACK; |
4957 | pp_pushmark(ARGS); | |
4958 | ||
25eaa213 | 4959 | EXTEND(sp, 4); |
b3ac6de7 IZ |
4960 | PUSHs(pv); |
4961 | PUSHs(sv); | |
4962 | PUSHs(typesv); | |
4963 | PUSHs(cv); | |
4964 | PUTBACK; | |
4965 | ||
533c011a | 4966 | if (PL_op = pp_entersub(ARGS)) |
b3ac6de7 IZ |
4967 | CALLRUNOPS(); |
4968 | LEAVE; | |
4969 | SPAGAIN; | |
4970 | ||
4971 | res = POPs; | |
4972 | PUTBACK; | |
4973 | CATCH_SET(oldcatch); | |
4974 | POPSTACK; | |
4975 | ||
4976 | if (!SvOK(res)) { | |
4977 | sprintf(buf,"Call to &{$^H{%s}} did not return a defined value", key); | |
4978 | yyerror(buf); | |
4979 | } | |
4980 | return SvREFCNT_inc(res); | |
4981 | } | |
4982 | ||
76e3520e | 4983 | STATIC char * |
8ac85365 | 4984 | scan_word(register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
4985 | { |
4986 | register char *d = dest; | |
8903cb82 | 4987 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 4988 | for (;;) { |
8903cb82 | 4989 | if (d >= e) |
fc36a67e | 4990 | croak(ident_too_long); |
463ee0b2 LW |
4991 | if (isALNUM(*s)) |
4992 | *d++ = *s++; | |
4993 | else if (*s == '\'' && allow_package && isIDFIRST(s[1])) { | |
4994 | *d++ = ':'; | |
4995 | *d++ = ':'; | |
4996 | s++; | |
4997 | } | |
c3e0f903 | 4998 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
4999 | *d++ = *s++; |
5000 | *d++ = *s++; | |
5001 | } | |
dfe13c55 | 5002 | else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5003 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5004 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5005 | t += UTF8SKIP(t); |
5006 | if (d + (t - s) > e) | |
5007 | croak(ident_too_long); | |
5008 | Copy(s, d, t - s, char); | |
5009 | d += t - s; | |
5010 | s = t; | |
5011 | } | |
463ee0b2 LW |
5012 | else { |
5013 | *d = '\0'; | |
5014 | *slp = d - dest; | |
5015 | return s; | |
e929a76b | 5016 | } |
378cc40b LW |
5017 | } |
5018 | } | |
5019 | ||
76e3520e | 5020 | STATIC char * |
8ac85365 | 5021 | scan_ident(register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5022 | { |
5023 | register char *d; | |
8903cb82 | 5024 | register char *e; |
79072805 | 5025 | char *bracket = 0; |
748a9306 | 5026 | char funny = *s++; |
378cc40b | 5027 | |
3280af22 NIS |
5028 | if (PL_lex_brackets == 0) |
5029 | PL_lex_fakebrack = 0; | |
a0d0e21e LW |
5030 | if (isSPACE(*s)) |
5031 | s = skipspace(s); | |
378cc40b | 5032 | d = dest; |
8903cb82 | 5033 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5034 | if (isDIGIT(*s)) { |
8903cb82 | 5035 | while (isDIGIT(*s)) { |
5036 | if (d >= e) | |
fc36a67e | 5037 | croak(ident_too_long); |
378cc40b | 5038 | *d++ = *s++; |
8903cb82 | 5039 | } |
378cc40b LW |
5040 | } |
5041 | else { | |
463ee0b2 | 5042 | for (;;) { |
8903cb82 | 5043 | if (d >= e) |
fc36a67e | 5044 | croak(ident_too_long); |
463ee0b2 LW |
5045 | if (isALNUM(*s)) |
5046 | *d++ = *s++; | |
5047 | else if (*s == '\'' && isIDFIRST(s[1])) { | |
5048 | *d++ = ':'; | |
5049 | *d++ = ':'; | |
5050 | s++; | |
5051 | } | |
a0d0e21e | 5052 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5053 | *d++ = *s++; |
5054 | *d++ = *s++; | |
5055 | } | |
dfe13c55 | 5056 | else if (UTF && (*s & 0xc0) == 0x80 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5057 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5058 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5059 | t += UTF8SKIP(t); |
5060 | if (d + (t - s) > e) | |
5061 | croak(ident_too_long); | |
5062 | Copy(s, d, t - s, char); | |
5063 | d += t - s; | |
5064 | s = t; | |
5065 | } | |
463ee0b2 LW |
5066 | else |
5067 | break; | |
5068 | } | |
378cc40b LW |
5069 | } |
5070 | *d = '\0'; | |
5071 | d = dest; | |
79072805 | 5072 | if (*d) { |
3280af22 NIS |
5073 | if (PL_lex_state != LEX_NORMAL) |
5074 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5075 | return s; |
378cc40b | 5076 | } |
748a9306 | 5077 | if (*s == '$' && s[1] && |
ff0cee69 | 5078 | (isALNUM(s[1]) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5079 | { |
3280af22 | 5080 | if (isDIGIT(s[1]) && PL_lex_state == LEX_INTERPNORMAL) |
5cd24f17 | 5081 | deprecate("\"$$<digit>\" to mean \"${$}<digit>\""); |
5082 | else | |
5083 | return s; | |
5084 | } | |
79072805 LW |
5085 | if (*s == '{') { |
5086 | bracket = s; | |
5087 | s++; | |
5088 | } | |
5089 | else if (ck_uni) | |
5090 | check_uni(); | |
93a17b20 | 5091 | if (s < send) |
79072805 LW |
5092 | *d = *s++; |
5093 | d[1] = '\0'; | |
748a9306 | 5094 | if (*d == '^' && *s && (isUPPER(*s) || strchr("[\\]^_?", *s))) { |
bbce6d69 | 5095 | *d = toCTRL(*s); |
5096 | s++; | |
de3bb511 | 5097 | } |
79072805 | 5098 | if (bracket) { |
748a9306 | 5099 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5100 | while (s < send) { |
5101 | char ch = *s++; | |
5102 | if (ch != ' ' && ch != '\t') { | |
5103 | *d = ch; | |
5104 | break; | |
5105 | } | |
5106 | } | |
748a9306 | 5107 | } |
dfe13c55 | 5108 | if (isIDFIRST(*d) || (UTF && (*d & 0xc0) == 0x80 && isIDFIRST_utf8((U8*)d))) { |
79072805 | 5109 | d++; |
a0ed51b3 LW |
5110 | if (UTF) { |
5111 | e = s; | |
5112 | while (e < send && (isALNUM(*e) || ((*e & 0xc0) == 0x80 && isALNUM_utf8((U8*)e)) || *e == ':')) { | |
5113 | e += UTF8SKIP(e); | |
dfe13c55 | 5114 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5115 | e += UTF8SKIP(e); |
5116 | } | |
5117 | Copy(s, d, e - s, char); | |
5118 | d += e - s; | |
5119 | s = e; | |
5120 | } | |
5121 | else { | |
5122 | while (isALNUM(*s) || *s == ':') | |
5123 | *d++ = *s++; | |
5124 | } | |
79072805 | 5125 | *d = '\0'; |
748a9306 | 5126 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5127 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5128 | dTHR; /* only for ckWARN */ |
599cee73 | 5129 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
748a9306 | 5130 | char *brack = *s == '[' ? "[...]" : "{...}"; |
599cee73 PM |
5131 | warner(WARN_AMBIGUOUS, |
5132 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", | |
748a9306 LW |
5133 | funny, dest, brack, funny, dest, brack); |
5134 | } | |
3280af22 | 5135 | PL_lex_fakebrack = PL_lex_brackets+1; |
79072805 | 5136 | bracket++; |
3280af22 | 5137 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 LW |
5138 | return s; |
5139 | } | |
5140 | } | |
5141 | if (*s == '}') { | |
5142 | s++; | |
3280af22 NIS |
5143 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5144 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5145 | if (funny == '#') |
5146 | funny = '@'; | |
d008e5eb GS |
5147 | if (PL_lex_state == LEX_NORMAL) { |
5148 | dTHR; /* only for ckWARN */ | |
5149 | if (ckWARN(WARN_AMBIGUOUS) && | |
5150 | (keyword(dest, d - dest) || perl_get_cv(dest, FALSE))) | |
5151 | { | |
5152 | warner(WARN_AMBIGUOUS, | |
5153 | "Ambiguous use of %c{%s} resolved to %c%s", | |
5154 | funny, dest, funny, dest); | |
5155 | } | |
5156 | } | |
79072805 LW |
5157 | } |
5158 | else { | |
5159 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5160 | *dest = '\0'; |
79072805 LW |
5161 | } |
5162 | } | |
3280af22 NIS |
5163 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5164 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5165 | return s; |
5166 | } | |
5167 | ||
8ac85365 | 5168 | void pmflag(U16 *pmfl, int ch) |
a0d0e21e | 5169 | { |
bbce6d69 | 5170 | if (ch == 'i') |
a0d0e21e | 5171 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5172 | else if (ch == 'g') |
5173 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5174 | else if (ch == 'c') |
5175 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5176 | else if (ch == 'o') |
5177 | *pmfl |= PMf_KEEP; | |
5178 | else if (ch == 'm') | |
5179 | *pmfl |= PMf_MULTILINE; | |
5180 | else if (ch == 's') | |
5181 | *pmfl |= PMf_SINGLELINE; | |
5182 | else if (ch == 'x') | |
5183 | *pmfl |= PMf_EXTENDED; | |
5184 | } | |
378cc40b | 5185 | |
76e3520e | 5186 | STATIC char * |
8782bef2 | 5187 | scan_pat(char *start, I32 type) |
378cc40b | 5188 | { |
79072805 LW |
5189 | PMOP *pm; |
5190 | char *s; | |
378cc40b | 5191 | |
79072805 LW |
5192 | s = scan_str(start); |
5193 | if (!s) { | |
3280af22 NIS |
5194 | if (PL_lex_stuff) |
5195 | SvREFCNT_dec(PL_lex_stuff); | |
5196 | PL_lex_stuff = Nullsv; | |
463ee0b2 | 5197 | croak("Search pattern not terminated"); |
378cc40b | 5198 | } |
bbce6d69 | 5199 | |
8782bef2 | 5200 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5201 | if (PL_multi_open == '?') |
79072805 | 5202 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5203 | if(type == OP_QR) { |
5204 | while (*s && strchr("iomsx", *s)) | |
5205 | pmflag(&pm->op_pmflags,*s++); | |
5206 | } | |
5207 | else { | |
5208 | while (*s && strchr("iogcmsx", *s)) | |
5209 | pmflag(&pm->op_pmflags,*s++); | |
5210 | } | |
4633a7c4 | 5211 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5212 | |
3280af22 | 5213 | PL_lex_op = (OP*)pm; |
79072805 | 5214 | yylval.ival = OP_MATCH; |
378cc40b LW |
5215 | return s; |
5216 | } | |
5217 | ||
76e3520e | 5218 | STATIC char * |
8ac85365 | 5219 | scan_subst(char *start) |
79072805 | 5220 | { |
a0d0e21e | 5221 | register char *s; |
79072805 | 5222 | register PMOP *pm; |
4fdae800 | 5223 | I32 first_start; |
79072805 LW |
5224 | I32 es = 0; |
5225 | ||
79072805 LW |
5226 | yylval.ival = OP_NULL; |
5227 | ||
a0d0e21e | 5228 | s = scan_str(start); |
79072805 LW |
5229 | |
5230 | if (!s) { | |
3280af22 NIS |
5231 | if (PL_lex_stuff) |
5232 | SvREFCNT_dec(PL_lex_stuff); | |
5233 | PL_lex_stuff = Nullsv; | |
463ee0b2 | 5234 | croak("Substitution pattern not terminated"); |
a687059c | 5235 | } |
79072805 | 5236 | |
3280af22 | 5237 | if (s[-1] == PL_multi_open) |
79072805 LW |
5238 | s--; |
5239 | ||
3280af22 | 5240 | first_start = PL_multi_start; |
79072805 LW |
5241 | s = scan_str(s); |
5242 | if (!s) { | |
3280af22 NIS |
5243 | if (PL_lex_stuff) |
5244 | SvREFCNT_dec(PL_lex_stuff); | |
5245 | PL_lex_stuff = Nullsv; | |
5246 | if (PL_lex_repl) | |
5247 | SvREFCNT_dec(PL_lex_repl); | |
5248 | PL_lex_repl = Nullsv; | |
463ee0b2 | 5249 | croak("Substitution replacement not terminated"); |
a687059c | 5250 | } |
3280af22 | 5251 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5252 | |
79072805 | 5253 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5254 | while (*s) { |
a687059c LW |
5255 | if (*s == 'e') { |
5256 | s++; | |
2f3197b3 | 5257 | es++; |
a687059c | 5258 | } |
b3eb6a9b | 5259 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5260 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5261 | else |
5262 | break; | |
378cc40b | 5263 | } |
79072805 LW |
5264 | |
5265 | if (es) { | |
5266 | SV *repl; | |
5267 | pm->op_pmflags |= PMf_EVAL; | |
463ee0b2 LW |
5268 | repl = newSVpv("",0); |
5269 | while (es-- > 0) | |
a0d0e21e | 5270 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5271 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5272 | sv_catsv(repl, PL_lex_repl); |
79072805 LW |
5273 | sv_catpvn(repl, " };", 2); |
5274 | SvCOMPILED_on(repl); | |
3280af22 NIS |
5275 | SvREFCNT_dec(PL_lex_repl); |
5276 | PL_lex_repl = repl; | |
378cc40b | 5277 | } |
79072805 | 5278 | |
4633a7c4 | 5279 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5280 | PL_lex_op = (OP*)pm; |
79072805 | 5281 | yylval.ival = OP_SUBST; |
378cc40b LW |
5282 | return s; |
5283 | } | |
5284 | ||
76e3520e | 5285 | STATIC char * |
8ac85365 | 5286 | scan_trans(char *start) |
378cc40b | 5287 | { |
a0d0e21e | 5288 | register char* s; |
11343788 | 5289 | OP *o; |
79072805 LW |
5290 | short *tbl; |
5291 | I32 squash; | |
a0ed51b3 | 5292 | I32 del; |
79072805 | 5293 | I32 complement; |
a0ed51b3 LW |
5294 | I32 utf8; |
5295 | I32 count = 0; | |
79072805 LW |
5296 | |
5297 | yylval.ival = OP_NULL; | |
5298 | ||
a0d0e21e | 5299 | s = scan_str(start); |
79072805 | 5300 | if (!s) { |
3280af22 NIS |
5301 | if (PL_lex_stuff) |
5302 | SvREFCNT_dec(PL_lex_stuff); | |
5303 | PL_lex_stuff = Nullsv; | |
2c268ad5 | 5304 | croak("Transliteration pattern not terminated"); |
a687059c | 5305 | } |
3280af22 | 5306 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5307 | s--; |
5308 | ||
93a17b20 | 5309 | s = scan_str(s); |
79072805 | 5310 | if (!s) { |
3280af22 NIS |
5311 | if (PL_lex_stuff) |
5312 | SvREFCNT_dec(PL_lex_stuff); | |
5313 | PL_lex_stuff = Nullsv; | |
5314 | if (PL_lex_repl) | |
5315 | SvREFCNT_dec(PL_lex_repl); | |
5316 | PL_lex_repl = Nullsv; | |
2c268ad5 | 5317 | croak("Transliteration replacement not terminated"); |
a687059c | 5318 | } |
79072805 | 5319 | |
a0ed51b3 LW |
5320 | if (UTF) { |
5321 | o = newSVOP(OP_TRANS, 0, 0); | |
5322 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5323 | } | |
5324 | else { | |
5325 | New(803,tbl,256,short); | |
5326 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5327 | utf8 = 0; | |
5328 | } | |
2f3197b3 | 5329 | |
a0ed51b3 LW |
5330 | complement = del = squash = 0; |
5331 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5332 | if (*s == 'c') |
79072805 | 5333 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5334 | else if (*s == 'd') |
a0ed51b3 LW |
5335 | del = OPpTRANS_DELETE; |
5336 | else if (*s == 's') | |
79072805 | 5337 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5338 | else { |
5339 | switch (count++) { | |
5340 | case 0: | |
5341 | if (*s == 'C') | |
5342 | utf8 &= ~OPpTRANS_FROM_UTF; | |
5343 | else | |
5344 | utf8 |= OPpTRANS_FROM_UTF; | |
5345 | break; | |
5346 | case 1: | |
5347 | if (*s == 'C') | |
5348 | utf8 &= ~OPpTRANS_TO_UTF; | |
5349 | else | |
5350 | utf8 |= OPpTRANS_TO_UTF; | |
5351 | break; | |
5352 | default: | |
5353 | croak("Too many /C and /U options"); | |
5354 | } | |
5355 | } | |
395c3793 LW |
5356 | s++; |
5357 | } | |
a0ed51b3 | 5358 | o->op_private = del|squash|complement|utf8; |
79072805 | 5359 | |
3280af22 | 5360 | PL_lex_op = o; |
79072805 LW |
5361 | yylval.ival = OP_TRANS; |
5362 | return s; | |
5363 | } | |
5364 | ||
76e3520e | 5365 | STATIC char * |
8ac85365 | 5366 | scan_heredoc(register char *s) |
79072805 | 5367 | { |
11343788 | 5368 | dTHR; |
79072805 LW |
5369 | SV *herewas; |
5370 | I32 op_type = OP_SCALAR; | |
5371 | I32 len; | |
5372 | SV *tmpstr; | |
5373 | char term; | |
5374 | register char *d; | |
fc36a67e | 5375 | register char *e; |
4633a7c4 | 5376 | char *peek; |
3280af22 | 5377 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
5378 | |
5379 | s += 2; | |
3280af22 NIS |
5380 | d = PL_tokenbuf; |
5381 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 5382 | if (!outer) |
79072805 | 5383 | *d++ = '\n'; |
4633a7c4 LW |
5384 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
5385 | if (*peek && strchr("`'\"",*peek)) { | |
5386 | s = peek; | |
79072805 | 5387 | term = *s++; |
3280af22 | 5388 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 5389 | d += len; |
3280af22 | 5390 | if (s < PL_bufend) |
79072805 | 5391 | s++; |
79072805 LW |
5392 | } |
5393 | else { | |
5394 | if (*s == '\\') | |
5395 | s++, term = '\''; | |
5396 | else | |
5397 | term = '"'; | |
4633a7c4 LW |
5398 | if (!isALNUM(*s)) |
5399 | deprecate("bare << to mean <<\"\""); | |
fc36a67e | 5400 | for (; isALNUM(*s); s++) { |
5401 | if (d < e) | |
5402 | *d++ = *s; | |
5403 | } | |
5404 | } | |
3280af22 | 5405 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
fc36a67e | 5406 | croak("Delimiter for here document is too long"); |
79072805 LW |
5407 | *d++ = '\n'; |
5408 | *d = '\0'; | |
3280af22 | 5409 | len = d - PL_tokenbuf; |
6a27c188 | 5410 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
5411 | d = strchr(s, '\r'); |
5412 | if (d) { | |
5413 | char *olds = s; | |
5414 | s = d; | |
3280af22 | 5415 | while (s < PL_bufend) { |
f63a84b2 LW |
5416 | if (*s == '\r') { |
5417 | *d++ = '\n'; | |
5418 | if (*++s == '\n') | |
5419 | s++; | |
5420 | } | |
5421 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
5422 | *d++ = *s++; | |
5423 | s++; | |
5424 | } | |
5425 | else | |
5426 | *d++ = *s++; | |
5427 | } | |
5428 | *d = '\0'; | |
3280af22 NIS |
5429 | PL_bufend = d; |
5430 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
5431 | s = olds; |
5432 | } | |
5433 | #endif | |
79072805 | 5434 | d = "\n"; |
3280af22 NIS |
5435 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
5436 | herewas = newSVpv(s,PL_bufend-s); | |
79072805 LW |
5437 | else |
5438 | s--, herewas = newSVpv(s,d-s); | |
5439 | s += SvCUR(herewas); | |
748a9306 | 5440 | |
8d6dde3e | 5441 | tmpstr = NEWSV(87,79); |
748a9306 LW |
5442 | sv_upgrade(tmpstr, SVt_PVIV); |
5443 | if (term == '\'') { | |
79072805 | 5444 | op_type = OP_CONST; |
748a9306 LW |
5445 | SvIVX(tmpstr) = -1; |
5446 | } | |
5447 | else if (term == '`') { | |
79072805 | 5448 | op_type = OP_BACKTICK; |
748a9306 LW |
5449 | SvIVX(tmpstr) = '\\'; |
5450 | } | |
79072805 LW |
5451 | |
5452 | CLINE; | |
3280af22 NIS |
5453 | PL_multi_start = PL_curcop->cop_line; |
5454 | PL_multi_open = PL_multi_close = '<'; | |
5455 | term = *PL_tokenbuf; | |
fd2d0953 | 5456 | if (!outer) { |
79072805 | 5457 | d = s; |
3280af22 NIS |
5458 | while (s < PL_bufend && |
5459 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 5460 | if (*s++ == '\n') |
3280af22 | 5461 | PL_curcop->cop_line++; |
79072805 | 5462 | } |
3280af22 NIS |
5463 | if (s >= PL_bufend) { |
5464 | PL_curcop->cop_line = PL_multi_start; | |
5465 | missingterm(PL_tokenbuf); | |
79072805 LW |
5466 | } |
5467 | sv_setpvn(tmpstr,d+1,s-d); | |
5468 | s += len - 1; | |
3280af22 | 5469 | PL_curcop->cop_line++; /* the preceding stmt passes a newline */ |
49d8d3a1 | 5470 | |
3280af22 NIS |
5471 | sv_catpvn(herewas,s,PL_bufend-s); |
5472 | sv_setsv(PL_linestr,herewas); | |
5473 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
5474 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
5475 | } |
5476 | else | |
5477 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 5478 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 5479 | if (!outer || |
3280af22 NIS |
5480 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
5481 | PL_curcop->cop_line = PL_multi_start; | |
5482 | missingterm(PL_tokenbuf); | |
79072805 | 5483 | } |
3280af22 NIS |
5484 | PL_curcop->cop_line++; |
5485 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
6a27c188 | 5486 | #ifndef PERL_STRICT_CR |
3280af22 | 5487 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
5488 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
5489 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 5490 | { |
3280af22 NIS |
5491 | PL_bufend[-2] = '\n'; |
5492 | PL_bufend--; | |
5493 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 5494 | } |
3280af22 NIS |
5495 | else if (PL_bufend[-1] == '\r') |
5496 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 5497 | } |
3280af22 NIS |
5498 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
5499 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 5500 | #endif |
3280af22 | 5501 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
5502 | SV *sv = NEWSV(88,0); |
5503 | ||
93a17b20 | 5504 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
5505 | sv_setsv(sv,PL_linestr); |
5506 | av_store(GvAV(PL_curcop->cop_filegv), | |
5507 | (I32)PL_curcop->cop_line,sv); | |
79072805 | 5508 | } |
3280af22 NIS |
5509 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
5510 | s = PL_bufend - 1; | |
79072805 | 5511 | *s = ' '; |
3280af22 NIS |
5512 | sv_catsv(PL_linestr,herewas); |
5513 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
5514 | } |
5515 | else { | |
3280af22 NIS |
5516 | s = PL_bufend; |
5517 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
5518 | } |
5519 | } | |
3280af22 | 5520 | PL_multi_end = PL_curcop->cop_line; |
79072805 LW |
5521 | s++; |
5522 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { | |
5523 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 5524 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 5525 | } |
8990e307 | 5526 | SvREFCNT_dec(herewas); |
3280af22 | 5527 | PL_lex_stuff = tmpstr; |
79072805 LW |
5528 | yylval.ival = op_type; |
5529 | return s; | |
5530 | } | |
5531 | ||
02aa26ce NT |
5532 | /* scan_inputsymbol |
5533 | takes: current position in input buffer | |
5534 | returns: new position in input buffer | |
5535 | side-effects: yylval and lex_op are set. | |
5536 | ||
5537 | This code handles: | |
5538 | ||
5539 | <> read from ARGV | |
5540 | <FH> read from filehandle | |
5541 | <pkg::FH> read from package qualified filehandle | |
5542 | <pkg'FH> read from package qualified filehandle | |
5543 | <$fh> read from filehandle in $fh | |
5544 | <*.h> filename glob | |
5545 | ||
5546 | */ | |
5547 | ||
76e3520e | 5548 | STATIC char * |
8ac85365 | 5549 | scan_inputsymbol(char *start) |
79072805 | 5550 | { |
02aa26ce | 5551 | register char *s = start; /* current position in buffer */ |
79072805 | 5552 | register char *d; |
fc36a67e | 5553 | register char *e; |
79072805 LW |
5554 | I32 len; |
5555 | ||
3280af22 NIS |
5556 | d = PL_tokenbuf; /* start of temp holding space */ |
5557 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
5558 | s = delimcpy(d, e, s + 1, PL_bufend, '>', &len); /* extract until > */ | |
02aa26ce NT |
5559 | |
5560 | /* die if we didn't have space for the contents of the <>, | |
5561 | or if it didn't end | |
5562 | */ | |
5563 | ||
3280af22 | 5564 | if (len >= sizeof PL_tokenbuf) |
fc36a67e | 5565 | croak("Excessively long <> operator"); |
3280af22 | 5566 | if (s >= PL_bufend) |
463ee0b2 | 5567 | croak("Unterminated <> operator"); |
02aa26ce | 5568 | |
fc36a67e | 5569 | s++; |
02aa26ce NT |
5570 | |
5571 | /* check for <$fh> | |
5572 | Remember, only scalar variables are interpreted as filehandles by | |
5573 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
5574 | treated as a glob() call. | |
5575 | This code makes use of the fact that except for the $ at the front, | |
5576 | a scalar variable and a filehandle look the same. | |
5577 | */ | |
4633a7c4 | 5578 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
5579 | |
5580 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
a0d0e21e | 5581 | while (*d && (isALNUM(*d) || *d == '\'' || *d == ':')) |
79072805 | 5582 | d++; |
02aa26ce NT |
5583 | |
5584 | /* If we've tried to read what we allow filehandles to look like, and | |
5585 | there's still text left, then it must be a glob() and not a getline. | |
5586 | Use scan_str to pull out the stuff between the <> and treat it | |
5587 | as nothing more than a string. | |
5588 | */ | |
5589 | ||
3280af22 | 5590 | if (d - PL_tokenbuf != len) { |
79072805 LW |
5591 | yylval.ival = OP_GLOB; |
5592 | set_csh(); | |
5593 | s = scan_str(start); | |
5594 | if (!s) | |
02aa26ce | 5595 | croak("Glob not terminated"); |
79072805 LW |
5596 | return s; |
5597 | } | |
395c3793 | 5598 | else { |
02aa26ce | 5599 | /* we're in a filehandle read situation */ |
3280af22 | 5600 | d = PL_tokenbuf; |
02aa26ce NT |
5601 | |
5602 | /* turn <> into <ARGV> */ | |
79072805 LW |
5603 | if (!len) |
5604 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
5605 | |
5606 | /* if <$fh>, create the ops to turn the variable into a | |
5607 | filehandle | |
5608 | */ | |
79072805 | 5609 | if (*d == '$') { |
a0d0e21e | 5610 | I32 tmp; |
02aa26ce NT |
5611 | |
5612 | /* try to find it in the pad for this block, otherwise find | |
5613 | add symbol table ops | |
5614 | */ | |
11343788 MB |
5615 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
5616 | OP *o = newOP(OP_PADSV, 0); | |
5617 | o->op_targ = tmp; | |
3280af22 | 5618 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newUNOP(OP_RV2GV, 0, o)); |
a0d0e21e LW |
5619 | } |
5620 | else { | |
5621 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 5622 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e LW |
5623 | newUNOP(OP_RV2GV, 0, |
5624 | newUNOP(OP_RV2SV, 0, | |
5625 | newGVOP(OP_GV, 0, gv)))); | |
5626 | } | |
02aa26ce | 5627 | /* we created the ops in lex_op, so make yylval.ival a null op */ |
79072805 LW |
5628 | yylval.ival = OP_NULL; |
5629 | } | |
02aa26ce NT |
5630 | |
5631 | /* If it's none of the above, it must be a literal filehandle | |
5632 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 5633 | else { |
85e6fe83 | 5634 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 5635 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
5636 | yylval.ival = OP_NULL; |
5637 | } | |
5638 | } | |
02aa26ce | 5639 | |
79072805 LW |
5640 | return s; |
5641 | } | |
5642 | ||
02aa26ce NT |
5643 | |
5644 | /* scan_str | |
5645 | takes: start position in buffer | |
5646 | returns: position to continue reading from buffer | |
5647 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
5648 | updates the read buffer. | |
5649 | ||
5650 | This subroutine pulls a string out of the input. It is called for: | |
5651 | q single quotes q(literal text) | |
5652 | ' single quotes 'literal text' | |
5653 | qq double quotes qq(interpolate $here please) | |
5654 | " double quotes "interpolate $here please" | |
5655 | qx backticks qx(/bin/ls -l) | |
5656 | ` backticks `/bin/ls -l` | |
5657 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
5658 | m// regexp match m/this/ | |
5659 | s/// regexp substitute s/this/that/ | |
5660 | tr/// string transliterate tr/this/that/ | |
5661 | y/// string transliterate y/this/that/ | |
5662 | ($*@) sub prototypes sub foo ($) | |
5663 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> | |
5664 | ||
5665 | In most of these cases (all but <>, patterns and transliterate) | |
5666 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
5667 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
5668 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
5669 | calls scan_str(). | |
5670 | ||
5671 | It skips whitespace before the string starts, and treats the first | |
5672 | character as the delimiter. If the delimiter is one of ([{< then | |
5673 | the corresponding "close" character )]}> is used as the closing | |
5674 | delimiter. It allows quoting of delimiters, and if the string has | |
5675 | balanced delimiters ([{<>}]) it allows nesting. | |
5676 | ||
5677 | The lexer always reads these strings into lex_stuff, except in the | |
5678 | case of the operators which take *two* arguments (s/// and tr///) | |
5679 | when it checks to see if lex_stuff is full (presumably with the 1st | |
5680 | arg to s or tr) and if so puts the string into lex_repl. | |
5681 | ||
5682 | */ | |
5683 | ||
76e3520e | 5684 | STATIC char * |
8ac85365 | 5685 | scan_str(char *start) |
79072805 | 5686 | { |
11343788 | 5687 | dTHR; |
02aa26ce NT |
5688 | SV *sv; /* scalar value: string */ |
5689 | char *tmps; /* temp string, used for delimiter matching */ | |
5690 | register char *s = start; /* current position in the buffer */ | |
5691 | register char term; /* terminating character */ | |
5692 | register char *to; /* current position in the sv's data */ | |
5693 | I32 brackets = 1; /* bracket nesting level */ | |
5694 | ||
5695 | /* skip space before the delimiter */ | |
fb73857a | 5696 | if (isSPACE(*s)) |
5697 | s = skipspace(s); | |
02aa26ce NT |
5698 | |
5699 | /* mark where we are, in case we need to report errors */ | |
79072805 | 5700 | CLINE; |
02aa26ce NT |
5701 | |
5702 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 5703 | term = *s; |
02aa26ce | 5704 | /* mark where we are */ |
3280af22 NIS |
5705 | PL_multi_start = PL_curcop->cop_line; |
5706 | PL_multi_open = term; | |
02aa26ce NT |
5707 | |
5708 | /* find corresponding closing delimiter */ | |
93a17b20 | 5709 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 5710 | term = tmps[5]; |
3280af22 | 5711 | PL_multi_close = term; |
79072805 | 5712 | |
02aa26ce | 5713 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
5714 | assuming. 79 is the SV's initial length. What a random number. */ |
5715 | sv = NEWSV(87,79); | |
ed6116ce LW |
5716 | sv_upgrade(sv, SVt_PVIV); |
5717 | SvIVX(sv) = term; | |
a0d0e21e | 5718 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
5719 | |
5720 | /* move past delimiter and try to read a complete string */ | |
93a17b20 LW |
5721 | s++; |
5722 | for (;;) { | |
02aa26ce | 5723 | /* extend sv if need be */ |
3280af22 | 5724 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 5725 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 5726 | to = SvPVX(sv)+SvCUR(sv); |
02aa26ce NT |
5727 | |
5728 | /* if open delimiter is the close delimiter read unbridle */ | |
3280af22 NIS |
5729 | if (PL_multi_open == PL_multi_close) { |
5730 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 5731 | /* embedded newlines increment the current line number */ |
3280af22 NIS |
5732 | if (*s == '\n' && !PL_rsfp) |
5733 | PL_curcop->cop_line++; | |
02aa26ce | 5734 | /* handle quoted delimiters */ |
3280af22 | 5735 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
a0d0e21e LW |
5736 | if (s[1] == term) |
5737 | s++; | |
02aa26ce | 5738 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
5739 | else |
5740 | *to++ = *s++; | |
5741 | } | |
02aa26ce NT |
5742 | /* terminate when run out of buffer (the for() condition), or |
5743 | have found the terminator */ | |
93a17b20 LW |
5744 | else if (*s == term) |
5745 | break; | |
5746 | *to = *s; | |
5747 | } | |
5748 | } | |
02aa26ce NT |
5749 | |
5750 | /* if the terminator isn't the same as the start character (e.g., | |
5751 | matched brackets), we have to allow more in the quoting, and | |
5752 | be prepared for nested brackets. | |
5753 | */ | |
93a17b20 | 5754 | else { |
02aa26ce | 5755 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 5756 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 5757 | /* embedded newlines increment the line count */ |
3280af22 NIS |
5758 | if (*s == '\n' && !PL_rsfp) |
5759 | PL_curcop->cop_line++; | |
02aa26ce | 5760 | /* backslashes can escape the open or closing characters */ |
3280af22 NIS |
5761 | if (*s == '\\' && s+1 < PL_bufend) { |
5762 | if ((s[1] == PL_multi_open) || (s[1] == PL_multi_close)) | |
a0d0e21e LW |
5763 | s++; |
5764 | else | |
5765 | *to++ = *s++; | |
5766 | } | |
02aa26ce | 5767 | /* allow nested opens and closes */ |
3280af22 | 5768 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 5769 | break; |
3280af22 | 5770 | else if (*s == PL_multi_open) |
93a17b20 LW |
5771 | brackets++; |
5772 | *to = *s; | |
5773 | } | |
5774 | } | |
02aa26ce | 5775 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 5776 | *to = '\0'; |
463ee0b2 | 5777 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 5778 | |
02aa26ce NT |
5779 | /* |
5780 | * this next chunk reads more into the buffer if we're not done yet | |
5781 | */ | |
5782 | ||
3280af22 | 5783 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 5784 | |
6a27c188 | 5785 | #ifndef PERL_STRICT_CR |
f63a84b2 | 5786 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
5787 | if ((to[-2] == '\r' && to[-1] == '\n') || |
5788 | (to[-2] == '\n' && to[-1] == '\r')) | |
5789 | { | |
f63a84b2 LW |
5790 | to[-2] = '\n'; |
5791 | to--; | |
5792 | SvCUR_set(sv, to - SvPVX(sv)); | |
5793 | } | |
5794 | else if (to[-1] == '\r') | |
5795 | to[-1] = '\n'; | |
5796 | } | |
5797 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
5798 | to[-1] = '\n'; | |
5799 | #endif | |
5800 | ||
02aa26ce NT |
5801 | /* if we're out of file, or a read fails, bail and reset the current |
5802 | line marker so we can report where the unterminated string began | |
5803 | */ | |
3280af22 NIS |
5804 | if (!PL_rsfp || |
5805 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 5806 | sv_free(sv); |
3280af22 | 5807 | PL_curcop->cop_line = PL_multi_start; |
79072805 LW |
5808 | return Nullch; |
5809 | } | |
02aa26ce | 5810 | /* we read a line, so increment our line counter */ |
3280af22 | 5811 | PL_curcop->cop_line++; |
a0ed51b3 | 5812 | |
02aa26ce | 5813 | /* update debugger info */ |
3280af22 | 5814 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
5815 | SV *sv = NEWSV(88,0); |
5816 | ||
93a17b20 | 5817 | sv_upgrade(sv, SVt_PVMG); |
3280af22 NIS |
5818 | sv_setsv(sv,PL_linestr); |
5819 | av_store(GvAV(PL_curcop->cop_filegv), | |
5820 | (I32)PL_curcop->cop_line, sv); | |
395c3793 | 5821 | } |
a0ed51b3 | 5822 | |
3280af22 NIS |
5823 | /* having changed the buffer, we must update PL_bufend */ |
5824 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 5825 | } |
02aa26ce NT |
5826 | |
5827 | /* at this point, we have successfully read the delimited string */ | |
5828 | ||
3280af22 | 5829 | PL_multi_end = PL_curcop->cop_line; |
79072805 | 5830 | s++; |
02aa26ce NT |
5831 | |
5832 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
5833 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
5834 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 5835 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 5836 | } |
02aa26ce NT |
5837 | |
5838 | /* decide whether this is the first or second quoted string we've read | |
5839 | for this op | |
5840 | */ | |
5841 | ||
3280af22 NIS |
5842 | if (PL_lex_stuff) |
5843 | PL_lex_repl = sv; | |
79072805 | 5844 | else |
3280af22 | 5845 | PL_lex_stuff = sv; |
378cc40b LW |
5846 | return s; |
5847 | } | |
5848 | ||
02aa26ce NT |
5849 | /* |
5850 | scan_num | |
5851 | takes: pointer to position in buffer | |
5852 | returns: pointer to new position in buffer | |
5853 | side-effects: builds ops for the constant in yylval.op | |
5854 | ||
5855 | Read a number in any of the formats that Perl accepts: | |
5856 | ||
5857 | 0(x[0-7A-F]+)|([0-7]+) | |
5858 | [\d_]+(\.[\d_]*)?[Ee](\d+) | |
5859 | ||
5860 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
5861 | underbars before a decimal point must be at three digit intervals. | |
5862 | ||
3280af22 | 5863 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
5864 | thing it reads. |
5865 | ||
5866 | If it reads a number without a decimal point or an exponent, it will | |
5867 | try converting the number to an integer and see if it can do so | |
5868 | without loss of precision. | |
5869 | */ | |
5870 | ||
378cc40b | 5871 | char * |
8ac85365 | 5872 | scan_num(char *start) |
378cc40b | 5873 | { |
02aa26ce NT |
5874 | register char *s = start; /* current position in buffer */ |
5875 | register char *d; /* destination in temp buffer */ | |
5876 | register char *e; /* end of temp buffer */ | |
5877 | I32 tryiv; /* used to see if it can be an int */ | |
5878 | double value; /* number read, as a double */ | |
5879 | SV *sv; /* place to put the converted number */ | |
5880 | I32 floatit; /* boolean: int or float? */ | |
5881 | char *lastub = 0; /* position of last underbar */ | |
fc36a67e | 5882 | static char number_too_long[] = "Number too long"; |
378cc40b | 5883 | |
02aa26ce NT |
5884 | /* We use the first character to decide what type of number this is */ |
5885 | ||
378cc40b | 5886 | switch (*s) { |
79072805 | 5887 | default: |
02aa26ce NT |
5888 | croak("panic: scan_num"); |
5889 | ||
5890 | /* if it starts with a 0, it could be an octal number, a decimal in | |
5891 | 0.13 disguise, or a hexadecimal number. | |
5892 | */ | |
378cc40b LW |
5893 | case '0': |
5894 | { | |
02aa26ce NT |
5895 | /* variables: |
5896 | u holds the "number so far" | |
5897 | shift the power of 2 of the base (hex == 4, octal == 3) | |
5898 | overflowed was the number more than we can hold? | |
5899 | ||
5900 | Shift is used when we add a digit. It also serves as an "are | |
5901 | we in octal or hex?" indicator to disallow hex characters when | |
5902 | in octal mode. | |
5903 | */ | |
55497cff | 5904 | UV u; |
79072805 | 5905 | I32 shift; |
55497cff | 5906 | bool overflowed = FALSE; |
378cc40b | 5907 | |
02aa26ce | 5908 | /* check for hex */ |
378cc40b LW |
5909 | if (s[1] == 'x') { |
5910 | shift = 4; | |
5911 | s += 2; | |
5912 | } | |
02aa26ce | 5913 | /* check for a decimal in disguise */ |
378cc40b LW |
5914 | else if (s[1] == '.') |
5915 | goto decimal; | |
02aa26ce | 5916 | /* so it must be octal */ |
378cc40b LW |
5917 | else |
5918 | shift = 3; | |
55497cff | 5919 | u = 0; |
02aa26ce NT |
5920 | |
5921 | /* read the rest of the octal number */ | |
378cc40b | 5922 | for (;;) { |
02aa26ce | 5923 | UV n, b; /* n is used in the overflow test, b is the digit we're adding on */ |
55497cff | 5924 | |
378cc40b | 5925 | switch (*s) { |
02aa26ce NT |
5926 | |
5927 | /* if we don't mention it, we're done */ | |
378cc40b LW |
5928 | default: |
5929 | goto out; | |
02aa26ce NT |
5930 | |
5931 | /* _ are ignored */ | |
de3bb511 LW |
5932 | case '_': |
5933 | s++; | |
5934 | break; | |
02aa26ce NT |
5935 | |
5936 | /* 8 and 9 are not octal */ | |
378cc40b LW |
5937 | case '8': case '9': |
5938 | if (shift != 4) | |
a687059c | 5939 | yyerror("Illegal octal digit"); |
378cc40b | 5940 | /* FALL THROUGH */ |
02aa26ce NT |
5941 | |
5942 | /* octal digits */ | |
378cc40b LW |
5943 | case '0': case '1': case '2': case '3': case '4': |
5944 | case '5': case '6': case '7': | |
02aa26ce | 5945 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 5946 | goto digit; |
02aa26ce NT |
5947 | |
5948 | /* hex digits */ | |
378cc40b LW |
5949 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
5950 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 5951 | /* make sure they said 0x */ |
378cc40b LW |
5952 | if (shift != 4) |
5953 | goto out; | |
55497cff | 5954 | b = (*s++ & 7) + 9; |
02aa26ce NT |
5955 | |
5956 | /* Prepare to put the digit we have onto the end | |
5957 | of the number so far. We check for overflows. | |
5958 | */ | |
5959 | ||
55497cff | 5960 | digit: |
02aa26ce | 5961 | n = u << shift; /* make room for the digit */ |
b3ac6de7 | 5962 | if (!overflowed && (n >> shift) != u |
3280af22 | 5963 | && !(PL_hints & HINT_NEW_BINARY)) { |
55497cff | 5964 | warn("Integer overflow in %s number", |
5965 | (shift == 4) ? "hex" : "octal"); | |
5966 | overflowed = TRUE; | |
5967 | } | |
02aa26ce | 5968 | u = n | b; /* add the digit to the end */ |
378cc40b LW |
5969 | break; |
5970 | } | |
5971 | } | |
02aa26ce NT |
5972 | |
5973 | /* if we get here, we had success: make a scalar value from | |
5974 | the number. | |
5975 | */ | |
378cc40b | 5976 | out: |
79072805 | 5977 | sv = NEWSV(92,0); |
55497cff | 5978 | sv_setuv(sv, u); |
3280af22 | 5979 | if ( PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 5980 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
5981 | } |
5982 | break; | |
02aa26ce NT |
5983 | |
5984 | /* | |
5985 | handle decimal numbers. | |
5986 | we're also sent here when we read a 0 as the first digit | |
5987 | */ | |
378cc40b LW |
5988 | case '1': case '2': case '3': case '4': case '5': |
5989 | case '6': case '7': case '8': case '9': case '.': | |
5990 | decimal: | |
3280af22 NIS |
5991 | d = PL_tokenbuf; |
5992 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 5993 | floatit = FALSE; |
02aa26ce NT |
5994 | |
5995 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 5996 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
5997 | /* skip underscores, checking for misplaced ones |
5998 | if -w is on | |
5999 | */ | |
93a17b20 | 6000 | if (*s == '_') { |
d008e5eb | 6001 | dTHR; /* only for ckWARN */ |
599cee73 PM |
6002 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
6003 | warner(WARN_SYNTAX, "Misplaced _ in number"); | |
93a17b20 LW |
6004 | lastub = ++s; |
6005 | } | |
fc36a67e | 6006 | else { |
02aa26ce | 6007 | /* check for end of fixed-length buffer */ |
fc36a67e | 6008 | if (d >= e) |
6009 | croak(number_too_long); | |
02aa26ce | 6010 | /* if we're ok, copy the character */ |
378cc40b | 6011 | *d++ = *s++; |
fc36a67e | 6012 | } |
378cc40b | 6013 | } |
02aa26ce NT |
6014 | |
6015 | /* final misplaced underbar check */ | |
d008e5eb GS |
6016 | if (lastub && s - lastub != 3) { |
6017 | dTHR; | |
6018 | if (ckWARN(WARN_SYNTAX)) | |
6019 | warner(WARN_SYNTAX, "Misplaced _ in number"); | |
6020 | } | |
02aa26ce NT |
6021 | |
6022 | /* read a decimal portion if there is one. avoid | |
6023 | 3..5 being interpreted as the number 3. followed | |
6024 | by .5 | |
6025 | */ | |
2f3197b3 | 6026 | if (*s == '.' && s[1] != '.') { |
79072805 | 6027 | floatit = TRUE; |
378cc40b | 6028 | *d++ = *s++; |
02aa26ce NT |
6029 | |
6030 | /* copy, ignoring underbars, until we run out of | |
6031 | digits. Note: no misplaced underbar checks! | |
6032 | */ | |
fc36a67e | 6033 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6034 | /* fixed length buffer check */ |
fc36a67e | 6035 | if (d >= e) |
6036 | croak(number_too_long); | |
6037 | if (*s != '_') | |
6038 | *d++ = *s; | |
378cc40b LW |
6039 | } |
6040 | } | |
02aa26ce NT |
6041 | |
6042 | /* read exponent part, if present */ | |
93a17b20 | 6043 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6044 | floatit = TRUE; |
6045 | s++; | |
02aa26ce NT |
6046 | |
6047 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6048 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6049 | |
6050 | /* allow positive or negative exponent */ | |
378cc40b LW |
6051 | if (*s == '+' || *s == '-') |
6052 | *d++ = *s++; | |
02aa26ce NT |
6053 | |
6054 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6055 | while (isDIGIT(*s)) { |
6056 | if (d >= e) | |
6057 | croak(number_too_long); | |
378cc40b | 6058 | *d++ = *s++; |
fc36a67e | 6059 | } |
378cc40b | 6060 | } |
02aa26ce NT |
6061 | |
6062 | /* terminate the string */ | |
378cc40b | 6063 | *d = '\0'; |
02aa26ce NT |
6064 | |
6065 | /* make an sv from the string */ | |
79072805 | 6066 | sv = NEWSV(92,0); |
02aa26ce | 6067 | /* reset numeric locale in case we were earlier left in Swaziland */ |
36477c24 | 6068 | SET_NUMERIC_STANDARD(); |
3280af22 | 6069 | value = atof(PL_tokenbuf); |
02aa26ce NT |
6070 | |
6071 | /* | |
6072 | See if we can make do with an integer value without loss of | |
6073 | precision. We use I_V to cast to an int, because some | |
6074 | compilers have issues. Then we try casting it back and see | |
6075 | if it was the same. We only do this if we know we | |
6076 | specifically read an integer. | |
6077 | ||
6078 | Note: if floatit is true, then we don't need to do the | |
6079 | conversion at all. | |
6080 | */ | |
1e422769 | 6081 | tryiv = I_V(value); |
6082 | if (!floatit && (double)tryiv == value) | |
6083 | sv_setiv(sv, tryiv); | |
2f3197b3 | 6084 | else |
1e422769 | 6085 | sv_setnv(sv, value); |
3280af22 NIS |
6086 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : (PL_hints & HINT_NEW_INTEGER) ) |
6087 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, | |
b3ac6de7 | 6088 | (floatit ? "float" : "integer"), sv, Nullsv, NULL); |
378cc40b | 6089 | break; |
79072805 | 6090 | } |
a687059c | 6091 | |
02aa26ce NT |
6092 | /* make the op for the constant and return */ |
6093 | ||
79072805 | 6094 | yylval.opval = newSVOP(OP_CONST, 0, sv); |
a687059c | 6095 | |
378cc40b LW |
6096 | return s; |
6097 | } | |
6098 | ||
76e3520e | 6099 | STATIC char * |
8ac85365 | 6100 | scan_formline(register char *s) |
378cc40b | 6101 | { |
11343788 | 6102 | dTHR; |
79072805 | 6103 | register char *eol; |
378cc40b | 6104 | register char *t; |
a0d0e21e | 6105 | SV *stuff = newSVpv("",0); |
79072805 | 6106 | bool needargs = FALSE; |
378cc40b | 6107 | |
79072805 | 6108 | while (!needargs) { |
85e6fe83 | 6109 | if (*s == '.' || *s == '}') { |
79072805 | 6110 | /*SUPPRESS 530*/ |
51882d45 GS |
6111 | #ifdef PERL_STRICT_CR |
6112 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6113 | #else | |
6114 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6115 | #endif | |
79072805 LW |
6116 | if (*t == '\n') |
6117 | break; | |
6118 | } | |
3280af22 | 6119 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6120 | eol = strchr(s,'\n'); |
0f85fab0 | 6121 | if (!eol++) |
3280af22 | 6122 | eol = PL_bufend; |
0f85fab0 LW |
6123 | } |
6124 | else | |
3280af22 | 6125 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6126 | if (*s != '#') { |
a0d0e21e LW |
6127 | for (t = s; t < eol; t++) { |
6128 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6129 | needargs = FALSE; | |
6130 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6131 | } |
a0d0e21e LW |
6132 | if (*t == '@' || *t == '^') |
6133 | needargs = TRUE; | |
378cc40b | 6134 | } |
a0d0e21e | 6135 | sv_catpvn(stuff, s, eol-s); |
79072805 LW |
6136 | } |
6137 | s = eol; | |
3280af22 NIS |
6138 | if (PL_rsfp) { |
6139 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6140 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6141 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6142 | if (!s) { |
3280af22 | 6143 | s = PL_bufptr; |
79072805 | 6144 | yyerror("Format not terminated"); |
378cc40b LW |
6145 | break; |
6146 | } | |
378cc40b | 6147 | } |
463ee0b2 | 6148 | incline(s); |
79072805 | 6149 | } |
a0d0e21e LW |
6150 | enough: |
6151 | if (SvCUR(stuff)) { | |
3280af22 | 6152 | PL_expect = XTERM; |
79072805 | 6153 | if (needargs) { |
3280af22 NIS |
6154 | PL_lex_state = LEX_NORMAL; |
6155 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6156 | force_next(','); |
6157 | } | |
a0d0e21e | 6158 | else |
3280af22 NIS |
6159 | PL_lex_state = LEX_FORMLINE; |
6160 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6161 | force_next(THING); |
3280af22 | 6162 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6163 | force_next(LSTOP); |
378cc40b | 6164 | } |
79072805 | 6165 | else { |
8990e307 | 6166 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6167 | PL_lex_formbrack = 0; |
6168 | PL_bufptr = s; | |
79072805 LW |
6169 | } |
6170 | return s; | |
378cc40b | 6171 | } |
a687059c | 6172 | |
76e3520e | 6173 | STATIC void |
8ac85365 | 6174 | set_csh(void) |
a687059c | 6175 | { |
ae986130 | 6176 | #ifdef CSH |
3280af22 NIS |
6177 | if (!PL_cshlen) |
6178 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6179 | #endif |
a687059c | 6180 | } |
463ee0b2 | 6181 | |
ba6d6ac9 | 6182 | I32 |
8ac85365 | 6183 | start_subparse(I32 is_format, U32 flags) |
8990e307 | 6184 | { |
11343788 | 6185 | dTHR; |
3280af22 NIS |
6186 | I32 oldsavestack_ix = PL_savestack_ix; |
6187 | CV* outsidecv = PL_compcv; | |
748a9306 | 6188 | AV* comppadlist; |
8990e307 | 6189 | |
3280af22 NIS |
6190 | if (PL_compcv) { |
6191 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 6192 | } |
3280af22 NIS |
6193 | save_I32(&PL_subline); |
6194 | save_item(PL_subname); | |
6195 | SAVEI32(PL_padix); | |
6196 | SAVESPTR(PL_curpad); | |
6197 | SAVESPTR(PL_comppad); | |
6198 | SAVESPTR(PL_comppad_name); | |
6199 | SAVESPTR(PL_compcv); | |
6200 | SAVEI32(PL_comppad_name_fill); | |
6201 | SAVEI32(PL_min_intro_pending); | |
6202 | SAVEI32(PL_max_intro_pending); | |
6203 | SAVEI32(PL_pad_reset_pending); | |
6204 | ||
6205 | PL_compcv = (CV*)NEWSV(1104,0); | |
6206 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
6207 | CvFLAGS(PL_compcv) |= flags; | |
6208 | ||
6209 | PL_comppad = newAV(); | |
6210 | av_push(PL_comppad, Nullsv); | |
6211 | PL_curpad = AvARRAY(PL_comppad); | |
6212 | PL_comppad_name = newAV(); | |
6213 | PL_comppad_name_fill = 0; | |
6214 | PL_min_intro_pending = 0; | |
6215 | PL_padix = 0; | |
6216 | PL_subline = PL_curcop->cop_line; | |
6d4ff0d2 | 6217 | #ifdef USE_THREADS |
533c011a NIS |
6218 | av_store(PL_comppad_name, 0, newSVpv("@_", 2)); |
6219 | PL_curpad[0] = (SV*)newAV(); | |
6220 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 6221 | #endif /* USE_THREADS */ |
748a9306 LW |
6222 | |
6223 | comppadlist = newAV(); | |
6224 | AvREAL_off(comppadlist); | |
3280af22 NIS |
6225 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
6226 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 6227 | |
3280af22 NIS |
6228 | CvPADLIST(PL_compcv) = comppadlist; |
6229 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 6230 | #ifdef USE_THREADS |
533c011a NIS |
6231 | CvOWNER(PL_compcv) = 0; |
6232 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
6233 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 6234 | #endif /* USE_THREADS */ |
748a9306 | 6235 | |
8990e307 LW |
6236 | return oldsavestack_ix; |
6237 | } | |
6238 | ||
6239 | int | |
8ac85365 | 6240 | yywarn(char *s) |
8990e307 | 6241 | { |
11343788 | 6242 | dTHR; |
3280af22 NIS |
6243 | --PL_error_count; |
6244 | PL_in_eval |= 2; | |
748a9306 | 6245 | yyerror(s); |
3280af22 | 6246 | PL_in_eval &= ~2; |
748a9306 | 6247 | return 0; |
8990e307 LW |
6248 | } |
6249 | ||
6250 | int | |
8ac85365 | 6251 | yyerror(char *s) |
463ee0b2 | 6252 | { |
11343788 | 6253 | dTHR; |
68dc0745 | 6254 | char *where = NULL; |
6255 | char *context = NULL; | |
6256 | int contlen = -1; | |
46fc3d4c | 6257 | SV *msg; |
463ee0b2 | 6258 | |
3280af22 | 6259 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 6260 | where = "at EOF"; |
3280af22 NIS |
6261 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
6262 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
6263 | while (isSPACE(*PL_oldoldbufptr)) | |
6264 | PL_oldoldbufptr++; | |
6265 | context = PL_oldoldbufptr; | |
6266 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 6267 | } |
3280af22 NIS |
6268 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
6269 | PL_oldbufptr != PL_bufptr) { | |
6270 | while (isSPACE(*PL_oldbufptr)) | |
6271 | PL_oldbufptr++; | |
6272 | context = PL_oldbufptr; | |
6273 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
6274 | } |
6275 | else if (yychar > 255) | |
68dc0745 | 6276 | where = "next token ???"; |
463ee0b2 | 6277 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
6278 | if (PL_lex_state == LEX_NORMAL || |
6279 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 6280 | where = "at end of line"; |
3280af22 | 6281 | else if (PL_lex_inpat) |
68dc0745 | 6282 | where = "within pattern"; |
463ee0b2 | 6283 | else |
68dc0745 | 6284 | where = "within string"; |
463ee0b2 | 6285 | } |
46fc3d4c | 6286 | else { |
6287 | SV *where_sv = sv_2mortal(newSVpv("next char ", 0)); | |
6288 | if (yychar < 32) | |
6289 | sv_catpvf(where_sv, "^%c", toCTRL(yychar)); | |
6290 | else if (isPRINT_LC(yychar)) | |
6291 | sv_catpvf(where_sv, "%c", yychar); | |
463ee0b2 | 6292 | else |
46fc3d4c | 6293 | sv_catpvf(where_sv, "\\%03o", yychar & 255); |
6294 | where = SvPVX(where_sv); | |
463ee0b2 | 6295 | } |
46fc3d4c | 6296 | msg = sv_2mortal(newSVpv(s, 0)); |
fc36a67e | 6297 | sv_catpvf(msg, " at %_ line %ld, ", |
3280af22 | 6298 | GvSV(PL_curcop->cop_filegv), (long)PL_curcop->cop_line); |
68dc0745 | 6299 | if (context) |
46fc3d4c | 6300 | sv_catpvf(msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 6301 | else |
46fc3d4c | 6302 | sv_catpvf(msg, "%s\n", where); |
3280af22 | 6303 | if (PL_multi_start < PL_multi_end && (U32)(PL_curcop->cop_line - PL_multi_end) <= 1) { |
46fc3d4c | 6304 | sv_catpvf(msg, |
4fdae800 | 6305 | " (Might be a runaway multi-line %c%c string starting on line %ld)\n", |
3280af22 NIS |
6306 | (int)PL_multi_open,(int)PL_multi_close,(long)PL_multi_start); |
6307 | PL_multi_end = 0; | |
a0d0e21e | 6308 | } |
3280af22 | 6309 | if (PL_in_eval & 2) |
fc36a67e | 6310 | warn("%_", msg); |
3280af22 | 6311 | else if (PL_in_eval) |
38a03e6e | 6312 | sv_catsv(ERRSV, msg); |
463ee0b2 | 6313 | else |
46fc3d4c | 6314 | PerlIO_write(PerlIO_stderr(), SvPVX(msg), SvCUR(msg)); |
3280af22 NIS |
6315 | if (++PL_error_count >= 10) |
6316 | croak("%_ has too many errors.\n", GvSV(PL_curcop->cop_filegv)); | |
6317 | PL_in_my = 0; | |
6318 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
6319 | return 0; |
6320 | } | |
4e35701f | 6321 | |
161b471a | 6322 |