Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
3818b22b | 3 | * Copyright (c) 1991-2000, 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 | ||
9cbb5ea2 GS |
14 | /* |
15 | * This file is the lexer for Perl. It's closely linked to the | |
ffb4593c NT |
16 | * parser, perly.y. |
17 | * | |
18 | * The main routine is yylex(), which returns the next token. | |
19 | */ | |
20 | ||
378cc40b | 21 | #include "EXTERN.h" |
864dbfa3 | 22 | #define PERL_IN_TOKE_C |
378cc40b | 23 | #include "perl.h" |
378cc40b | 24 | |
d3b6f988 GS |
25 | #define yychar PL_yychar |
26 | #define yylval PL_yylval | |
27 | ||
fc36a67e | 28 | static char ident_too_long[] = "Identifier too long"; |
8903cb82 | 29 | |
51371543 | 30 | static void restore_rsfp(pTHXo_ void *f); |
51371543 | 31 | |
9059aa12 LW |
32 | #define XFAKEBRACK 128 |
33 | #define XENUMMASK 127 | |
34 | ||
7e2040f0 | 35 | /*#define UTF (SvUTF8(PL_linestr) && !(PL_hints & HINT_BYTE))*/ |
a0ed51b3 LW |
36 | #define UTF (PL_hints & HINT_UTF8) |
37 | ||
2b92dfce GS |
38 | /* In variables name $^X, these are the legal values for X. |
39 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
40 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
41 | ||
ffb4593c NT |
42 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
43 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
44 | * can get by with a single comparison (if the compiler is smart enough). |
45 | */ | |
46 | ||
fb73857a | 47 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
48 | ||
55497cff | 49 | #define LEX_NORMAL 10 |
50 | #define LEX_INTERPNORMAL 9 | |
51 | #define LEX_INTERPCASEMOD 8 | |
52 | #define LEX_INTERPPUSH 7 | |
53 | #define LEX_INTERPSTART 6 | |
54 | #define LEX_INTERPEND 5 | |
55 | #define LEX_INTERPENDMAYBE 4 | |
56 | #define LEX_INTERPCONCAT 3 | |
57 | #define LEX_INTERPCONST 2 | |
58 | #define LEX_FORMLINE 1 | |
59 | #define LEX_KNOWNEXT 0 | |
79072805 | 60 | |
395c3793 LW |
61 | #ifdef I_FCNTL |
62 | #include <fcntl.h> | |
63 | #endif | |
fe14fcc3 LW |
64 | #ifdef I_SYS_FILE |
65 | #include <sys/file.h> | |
66 | #endif | |
395c3793 | 67 | |
a790bc05 | 68 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
69 | #ifdef I_UNISTD | |
70 | # include <unistd.h> /* Needed for execv() */ | |
71 | #endif | |
72 | ||
73 | ||
79072805 LW |
74 | #ifdef ff_next |
75 | #undef ff_next | |
d48672a2 LW |
76 | #endif |
77 | ||
a1a0e61e TD |
78 | #ifdef USE_PURE_BISON |
79 | YYSTYPE* yylval_pointer = NULL; | |
80 | int* yychar_pointer = NULL; | |
22c35a8c GS |
81 | # undef yylval |
82 | # undef yychar | |
e4bfbdd4 JH |
83 | # define yylval (*yylval_pointer) |
84 | # define yychar (*yychar_pointer) | |
85 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
86 | # undef yylex |
87 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
88 | #endif |
89 | ||
79072805 | 90 | #include "keywords.h" |
fe14fcc3 | 91 | |
ffb4593c NT |
92 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
93 | ||
ae986130 LW |
94 | #ifdef CLINE |
95 | #undef CLINE | |
96 | #endif | |
57843af0 | 97 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 98 | |
ffb4593c NT |
99 | /* |
100 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 101 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
102 | * |
103 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
104 | * OPERATOR : generic operator | |
105 | * AOPERATOR : assignment operator | |
106 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
107 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
108 | * PREREF : *EXPR where EXPR is not a simple identifier | |
109 | * TERM : expression term | |
110 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
111 | * FTST : file test operator | |
112 | * FUN0 : zero-argument function | |
2d2e263d | 113 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
114 | * BOop : bitwise or or xor |
115 | * BAop : bitwise and | |
116 | * SHop : shift operator | |
117 | * PWop : power operator | |
9cbb5ea2 | 118 | * PMop : pattern-matching operator |
ffb4593c NT |
119 | * Aop : addition-level operator |
120 | * Mop : multiplication-level operator | |
121 | * Eop : equality-testing operator | |
122 | * Rop : relational operator <= != gt | |
123 | * | |
124 | * Also see LOP and lop() below. | |
125 | */ | |
126 | ||
3280af22 NIS |
127 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
128 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
129 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
130 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
131 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
132 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
133 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
134 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
135 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
136 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
137 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
138 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
139 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
140 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
141 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
142 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
143 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
144 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
145 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
146 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 147 | |
a687059c LW |
148 | /* This bit of chicanery makes a unary function followed by |
149 | * a parenthesis into a function with one argument, highest precedence. | |
150 | */ | |
2f3197b3 | 151 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
152 | PL_expect = XTERM, \ |
153 | PL_bufptr = s, \ | |
154 | PL_last_uni = PL_oldbufptr, \ | |
155 | PL_last_lop_op = f, \ | |
a687059c LW |
156 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
157 | ||
79072805 | 158 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
159 | PL_bufptr = s, \ |
160 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
161 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
162 | ||
9f68db38 | 163 | /* grandfather return to old style */ |
3280af22 | 164 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 165 | |
ffb4593c NT |
166 | /* |
167 | * S_ao | |
168 | * | |
169 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
170 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
171 | */ | |
172 | ||
76e3520e | 173 | STATIC int |
cea2e8a9 | 174 | S_ao(pTHX_ int toketype) |
a0d0e21e | 175 | { |
3280af22 NIS |
176 | if (*PL_bufptr == '=') { |
177 | PL_bufptr++; | |
a0d0e21e LW |
178 | if (toketype == ANDAND) |
179 | yylval.ival = OP_ANDASSIGN; | |
180 | else if (toketype == OROR) | |
181 | yylval.ival = OP_ORASSIGN; | |
182 | toketype = ASSIGNOP; | |
183 | } | |
184 | return toketype; | |
185 | } | |
186 | ||
ffb4593c NT |
187 | /* |
188 | * S_no_op | |
189 | * When Perl expects an operator and finds something else, no_op | |
190 | * prints the warning. It always prints "<something> found where | |
191 | * operator expected. It prints "Missing semicolon on previous line?" | |
192 | * if the surprise occurs at the start of the line. "do you need to | |
193 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
194 | * where the compiler doesn't know if foo is a method call or a function. | |
195 | * It prints "Missing operator before end of line" if there's nothing | |
196 | * after the missing operator, or "... before <...>" if there is something | |
197 | * after the missing operator. | |
198 | */ | |
199 | ||
76e3520e | 200 | STATIC void |
cea2e8a9 | 201 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 202 | { |
3280af22 NIS |
203 | char *oldbp = PL_bufptr; |
204 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 205 | |
1189a94a GS |
206 | if (!s) |
207 | s = oldbp; | |
208 | else { | |
209 | assert(s >= oldbp); | |
210 | PL_bufptr = s; | |
211 | } | |
cea2e8a9 | 212 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 213 | if (is_first) |
cea2e8a9 | 214 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
7e2040f0 | 215 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { |
748a9306 | 216 | char *t; |
7e2040f0 | 217 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; |
3280af22 | 218 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 219 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 220 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
221 | } |
222 | else | |
cea2e8a9 | 223 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 224 | PL_bufptr = oldbp; |
8990e307 LW |
225 | } |
226 | ||
ffb4593c NT |
227 | /* |
228 | * S_missingterm | |
229 | * Complain about missing quote/regexp/heredoc terminator. | |
230 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
231 | * If we're in a delimited string and the delimiter is a control | |
232 | * character, it's reformatted into a two-char sequence like ^C. | |
233 | * This is fatal. | |
234 | */ | |
235 | ||
76e3520e | 236 | STATIC void |
cea2e8a9 | 237 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
238 | { |
239 | char tmpbuf[3]; | |
240 | char q; | |
241 | if (s) { | |
242 | char *nl = strrchr(s,'\n'); | |
d2719217 | 243 | if (nl) |
8990e307 LW |
244 | *nl = '\0'; |
245 | } | |
9d116dd7 JH |
246 | else if ( |
247 | #ifdef EBCDIC | |
248 | iscntrl(PL_multi_close) | |
249 | #else | |
250 | PL_multi_close < 32 || PL_multi_close == 127 | |
251 | #endif | |
252 | ) { | |
8990e307 | 253 | *tmpbuf = '^'; |
3280af22 | 254 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
255 | s = "\\n"; |
256 | tmpbuf[2] = '\0'; | |
257 | s = tmpbuf; | |
258 | } | |
259 | else { | |
3280af22 | 260 | *tmpbuf = PL_multi_close; |
8990e307 LW |
261 | tmpbuf[1] = '\0'; |
262 | s = tmpbuf; | |
263 | } | |
264 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 265 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 266 | } |
79072805 | 267 | |
ffb4593c NT |
268 | /* |
269 | * Perl_deprecate | |
ffb4593c NT |
270 | */ |
271 | ||
79072805 | 272 | void |
864dbfa3 | 273 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 274 | { |
d008e5eb | 275 | dTHR; |
599cee73 | 276 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 277 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
278 | } |
279 | ||
ffb4593c NT |
280 | /* |
281 | * depcom | |
9cbb5ea2 | 282 | * Deprecate a comma-less variable list. |
ffb4593c NT |
283 | */ |
284 | ||
76e3520e | 285 | STATIC void |
cea2e8a9 | 286 | S_depcom(pTHX) |
a0d0e21e LW |
287 | { |
288 | deprecate("comma-less variable list"); | |
289 | } | |
290 | ||
ffb4593c | 291 | /* |
9cbb5ea2 GS |
292 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
293 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
294 | */ |
295 | ||
c39cd008 GS |
296 | #ifdef PERL_CR_FILTER |
297 | static void | |
298 | strip_return(SV *sv) | |
299 | { | |
300 | register char *s = SvPVX(sv); | |
301 | register char *e = s + SvCUR(sv); | |
302 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
303 | while (s < e) { | |
304 | if (*s++ == '\r' && *s == '\n') { | |
305 | /* hit a CR-LF, need to copy the rest */ | |
306 | register char *d = s - 1; | |
307 | *d++ = *s++; | |
308 | while (s < e) { | |
309 | if (*s == '\r' && s[1] == '\n') | |
310 | s++; | |
311 | *d++ = *s++; | |
312 | } | |
313 | SvCUR(sv) -= s - d; | |
314 | return; | |
315 | } | |
316 | } | |
317 | } | |
a868473f | 318 | |
76e3520e | 319 | STATIC I32 |
c39cd008 | 320 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 321 | { |
c39cd008 GS |
322 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
323 | if (count > 0 && !maxlen) | |
324 | strip_return(sv); | |
325 | return count; | |
a868473f NIS |
326 | } |
327 | #endif | |
328 | ||
a0ed51b3 | 329 | STATIC I32 |
cea2e8a9 | 330 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
331 | { |
332 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
333 | if (count) { | |
dfe13c55 GS |
334 | U8* tmps; |
335 | U8* tend; | |
336 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 337 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 338 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
339 | |
340 | } | |
341 | return count; | |
342 | } | |
343 | ||
344 | STATIC I32 | |
cea2e8a9 | 345 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
346 | { |
347 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
348 | if (count) { | |
dfe13c55 GS |
349 | U8* tmps; |
350 | U8* tend; | |
351 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 352 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 353 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
354 | |
355 | } | |
356 | return count; | |
357 | } | |
a868473f | 358 | |
ffb4593c NT |
359 | /* |
360 | * Perl_lex_start | |
9cbb5ea2 GS |
361 | * Initialize variables. Uses the Perl save_stack to save its state (for |
362 | * recursive calls to the parser). | |
ffb4593c NT |
363 | */ |
364 | ||
a0d0e21e | 365 | void |
864dbfa3 | 366 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 367 | { |
0f15f207 | 368 | dTHR; |
8990e307 LW |
369 | char *s; |
370 | STRLEN len; | |
371 | ||
3280af22 NIS |
372 | SAVEI32(PL_lex_dojoin); |
373 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
374 | SAVEI32(PL_lex_casemods); |
375 | SAVEI32(PL_lex_starts); | |
376 | SAVEI32(PL_lex_state); | |
7766f137 | 377 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 378 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
379 | if (PL_lex_state == LEX_KNOWNEXT) { |
380 | I32 toke = PL_nexttoke; | |
381 | while (--toke >= 0) { | |
382 | SAVEI32(PL_nexttype[toke]); | |
383 | SAVEVPTR(PL_nextval[toke]); | |
384 | } | |
385 | SAVEI32(PL_nexttoke); | |
386 | PL_nexttoke = 0; | |
387 | } | |
57843af0 | 388 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
389 | SAVEPPTR(PL_bufptr); |
390 | SAVEPPTR(PL_bufend); | |
391 | SAVEPPTR(PL_oldbufptr); | |
392 | SAVEPPTR(PL_oldoldbufptr); | |
393 | SAVEPPTR(PL_linestart); | |
394 | SAVESPTR(PL_linestr); | |
395 | SAVEPPTR(PL_lex_brackstack); | |
396 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 397 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
398 | SAVESPTR(PL_lex_stuff); |
399 | SAVEI32(PL_lex_defer); | |
09bef843 | 400 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 401 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
402 | SAVEINT(PL_expect); |
403 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
404 | |
405 | PL_lex_state = LEX_NORMAL; | |
406 | PL_lex_defer = 0; | |
407 | PL_expect = XSTATE; | |
408 | PL_lex_brackets = 0; | |
3280af22 NIS |
409 | New(899, PL_lex_brackstack, 120, char); |
410 | New(899, PL_lex_casestack, 12, char); | |
411 | SAVEFREEPV(PL_lex_brackstack); | |
412 | SAVEFREEPV(PL_lex_casestack); | |
413 | PL_lex_casemods = 0; | |
414 | *PL_lex_casestack = '\0'; | |
415 | PL_lex_dojoin = 0; | |
416 | PL_lex_starts = 0; | |
417 | PL_lex_stuff = Nullsv; | |
418 | PL_lex_repl = Nullsv; | |
419 | PL_lex_inpat = 0; | |
420 | PL_lex_inwhat = 0; | |
09bef843 | 421 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
422 | PL_linestr = line; |
423 | if (SvREADONLY(PL_linestr)) | |
424 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
425 | s = SvPV(PL_linestr, len); | |
8990e307 | 426 | if (len && s[len-1] != ';') { |
3280af22 NIS |
427 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
428 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
429 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 430 | } |
3280af22 NIS |
431 | SvTEMP_off(PL_linestr); |
432 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
433 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
434 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 435 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 436 | PL_rsfp = 0; |
79072805 | 437 | } |
a687059c | 438 | |
ffb4593c NT |
439 | /* |
440 | * Perl_lex_end | |
9cbb5ea2 GS |
441 | * Finalizer for lexing operations. Must be called when the parser is |
442 | * done with the lexer. | |
ffb4593c NT |
443 | */ |
444 | ||
463ee0b2 | 445 | void |
864dbfa3 | 446 | Perl_lex_end(pTHX) |
463ee0b2 | 447 | { |
3280af22 | 448 | PL_doextract = FALSE; |
463ee0b2 LW |
449 | } |
450 | ||
ffb4593c NT |
451 | /* |
452 | * S_incline | |
453 | * This subroutine has nothing to do with tilting, whether at windmills | |
454 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 455 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 456 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
457 | * # line 500 "foo.pm" |
458 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
459 | */ |
460 | ||
76e3520e | 461 | STATIC void |
cea2e8a9 | 462 | S_incline(pTHX_ char *s) |
463ee0b2 | 463 | { |
0f15f207 | 464 | dTHR; |
463ee0b2 LW |
465 | char *t; |
466 | char *n; | |
467 | char ch; | |
468 | int sawline = 0; | |
469 | ||
57843af0 | 470 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
471 | if (*s++ != '#') |
472 | return; | |
473 | while (*s == ' ' || *s == '\t') s++; | |
474 | if (strnEQ(s, "line ", 5)) { | |
475 | s += 5; | |
476 | sawline = 1; | |
477 | } | |
478 | if (!isDIGIT(*s)) | |
479 | return; | |
480 | n = s; | |
481 | while (isDIGIT(*s)) | |
482 | s++; | |
483 | while (*s == ' ' || *s == '\t') | |
484 | s++; | |
485 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
486 | s++; | |
487 | else { | |
488 | if (!sawline) | |
489 | return; /* false alarm */ | |
490 | for (t = s; !isSPACE(*t); t++) ; | |
491 | } | |
492 | ch = *t; | |
493 | *t = '\0'; | |
494 | if (t - s > 0) | |
57843af0 | 495 | CopFILE_set(PL_curcop, s); |
463ee0b2 | 496 | *t = ch; |
57843af0 | 497 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
498 | } |
499 | ||
ffb4593c NT |
500 | /* |
501 | * S_skipspace | |
502 | * Called to gobble the appropriate amount and type of whitespace. | |
503 | * Skips comments as well. | |
504 | */ | |
505 | ||
76e3520e | 506 | STATIC char * |
cea2e8a9 | 507 | S_skipspace(pTHX_ register char *s) |
a687059c | 508 | { |
11343788 | 509 | dTHR; |
3280af22 NIS |
510 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
511 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
512 | s++; |
513 | return s; | |
514 | } | |
515 | for (;;) { | |
fd049845 | 516 | STRLEN prevlen; |
09bef843 SB |
517 | SSize_t oldprevlen, oldoldprevlen; |
518 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
519 | while (s < PL_bufend && isSPACE(*s)) { |
520 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
521 | incline(s); | |
522 | } | |
ffb4593c NT |
523 | |
524 | /* comment */ | |
3280af22 NIS |
525 | if (s < PL_bufend && *s == '#') { |
526 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 527 | s++; |
60e6418e | 528 | if (s < PL_bufend) { |
463ee0b2 | 529 | s++; |
60e6418e GS |
530 | if (PL_in_eval && !PL_rsfp) { |
531 | incline(s); | |
532 | continue; | |
533 | } | |
534 | } | |
463ee0b2 | 535 | } |
ffb4593c NT |
536 | |
537 | /* only continue to recharge the buffer if we're at the end | |
538 | * of the buffer, we're not reading from a source filter, and | |
539 | * we're in normal lexing mode | |
540 | */ | |
09bef843 SB |
541 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
542 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 543 | return s; |
ffb4593c NT |
544 | |
545 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
546 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
547 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
548 | { | |
549 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
550 | if (PL_minus_n || PL_minus_p) { |
551 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
552 | ";}continue{print or die qq(-p destination: $!\\n)" : |
553 | ""); | |
3280af22 NIS |
554 | sv_catpv(PL_linestr,";}"); |
555 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
556 | } |
557 | else | |
3280af22 | 558 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
559 | |
560 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
561 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
562 | = SvPVX(PL_linestr); | |
3280af22 | 563 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
564 | |
565 | /* Close the filehandle. Could be from -P preprocessor, | |
566 | * STDIN, or a regular file. If we were reading code from | |
567 | * STDIN (because the commandline held no -e or filename) | |
568 | * then we don't close it, we reset it so the code can | |
569 | * read from STDIN too. | |
570 | */ | |
571 | ||
3280af22 NIS |
572 | if (PL_preprocess && !PL_in_eval) |
573 | (void)PerlProc_pclose(PL_rsfp); | |
574 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
575 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 576 | else |
3280af22 NIS |
577 | (void)PerlIO_close(PL_rsfp); |
578 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
579 | return s; |
580 | } | |
ffb4593c NT |
581 | |
582 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
583 | /* make corresponding updates to old pointers, for yyerror() */ |
584 | oldprevlen = PL_oldbufptr - PL_bufend; | |
585 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
586 | if (PL_last_uni) | |
587 | oldunilen = PL_last_uni - PL_bufend; | |
588 | if (PL_last_lop) | |
589 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
590 | PL_linestart = PL_bufptr = s + prevlen; |
591 | PL_bufend = s + SvCUR(PL_linestr); | |
592 | s = PL_bufptr; | |
09bef843 SB |
593 | PL_oldbufptr = s + oldprevlen; |
594 | PL_oldoldbufptr = s + oldoldprevlen; | |
595 | if (PL_last_uni) | |
596 | PL_last_uni = s + oldunilen; | |
597 | if (PL_last_lop) | |
598 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 599 | incline(s); |
ffb4593c NT |
600 | |
601 | /* debugger active and we're not compiling the debugger code, | |
602 | * so store the line into the debugger's array of lines | |
603 | */ | |
3280af22 | 604 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
605 | SV *sv = NEWSV(85,0); |
606 | ||
607 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 608 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 609 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 610 | } |
463ee0b2 | 611 | } |
a687059c | 612 | } |
378cc40b | 613 | |
ffb4593c NT |
614 | /* |
615 | * S_check_uni | |
616 | * Check the unary operators to ensure there's no ambiguity in how they're | |
617 | * used. An ambiguous piece of code would be: | |
618 | * rand + 5 | |
619 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
620 | * the +5 is its argument. | |
621 | */ | |
622 | ||
76e3520e | 623 | STATIC void |
cea2e8a9 | 624 | S_check_uni(pTHX) |
ba106d47 | 625 | { |
2f3197b3 | 626 | char *s; |
a0d0e21e | 627 | char *t; |
0453d815 | 628 | dTHR; |
2f3197b3 | 629 | |
3280af22 | 630 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 631 | return; |
3280af22 NIS |
632 | while (isSPACE(*PL_last_uni)) |
633 | PL_last_uni++; | |
7e2040f0 | 634 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 635 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 636 | return; |
0453d815 | 637 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 638 | char ch = *s; |
0453d815 PM |
639 | *s = '\0'; |
640 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
641 | "Warning: Use of \"%s\" without parens is ambiguous", | |
642 | PL_last_uni); | |
643 | *s = ch; | |
644 | } | |
2f3197b3 LW |
645 | } |
646 | ||
ffb4593c NT |
647 | /* workaround to replace the UNI() macro with a function. Only the |
648 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
649 | * source indicate Microport Unix might need it too. | |
650 | */ | |
651 | ||
ffed7fef LW |
652 | #ifdef CRIPPLED_CC |
653 | ||
654 | #undef UNI | |
ffed7fef | 655 | #define UNI(f) return uni(f,s) |
ffed7fef | 656 | |
76e3520e | 657 | STATIC int |
cea2e8a9 | 658 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
659 | { |
660 | yylval.ival = f; | |
3280af22 NIS |
661 | PL_expect = XTERM; |
662 | PL_bufptr = s; | |
8f872242 NIS |
663 | PL_last_uni = PL_oldbufptr; |
664 | PL_last_lop_op = f; | |
ffed7fef LW |
665 | if (*s == '(') |
666 | return FUNC1; | |
667 | s = skipspace(s); | |
668 | if (*s == '(') | |
669 | return FUNC1; | |
670 | else | |
671 | return UNIOP; | |
672 | } | |
673 | ||
a0d0e21e LW |
674 | #endif /* CRIPPLED_CC */ |
675 | ||
ffb4593c NT |
676 | /* |
677 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
678 | * with a subroutine, S_lop() for which LOP is just another name. | |
679 | */ | |
680 | ||
a0d0e21e LW |
681 | #define LOP(f,x) return lop(f,x,s) |
682 | ||
ffb4593c NT |
683 | /* |
684 | * S_lop | |
685 | * Build a list operator (or something that might be one). The rules: | |
686 | * - if we have a next token, then it's a list operator [why?] | |
687 | * - if the next thing is an opening paren, then it's a function | |
688 | * - else it's a list operator | |
689 | */ | |
690 | ||
76e3520e | 691 | STATIC I32 |
a0be28da | 692 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 693 | { |
0f15f207 | 694 | dTHR; |
79072805 | 695 | yylval.ival = f; |
35c8bce7 | 696 | CLINE; |
3280af22 NIS |
697 | PL_expect = x; |
698 | PL_bufptr = s; | |
699 | PL_last_lop = PL_oldbufptr; | |
700 | PL_last_lop_op = f; | |
701 | if (PL_nexttoke) | |
a0d0e21e | 702 | return LSTOP; |
79072805 LW |
703 | if (*s == '(') |
704 | return FUNC; | |
705 | s = skipspace(s); | |
706 | if (*s == '(') | |
707 | return FUNC; | |
708 | else | |
709 | return LSTOP; | |
710 | } | |
711 | ||
ffb4593c NT |
712 | /* |
713 | * S_force_next | |
9cbb5ea2 | 714 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 715 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
716 | * to know what token to return the next time the lexer is called. Caller |
717 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
718 | * handles the token correctly. | |
ffb4593c NT |
719 | */ |
720 | ||
76e3520e | 721 | STATIC void |
cea2e8a9 | 722 | S_force_next(pTHX_ I32 type) |
79072805 | 723 | { |
3280af22 NIS |
724 | PL_nexttype[PL_nexttoke] = type; |
725 | PL_nexttoke++; | |
726 | if (PL_lex_state != LEX_KNOWNEXT) { | |
727 | PL_lex_defer = PL_lex_state; | |
728 | PL_lex_expect = PL_expect; | |
729 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
730 | } |
731 | } | |
732 | ||
ffb4593c NT |
733 | /* |
734 | * S_force_word | |
735 | * When the lexer knows the next thing is a word (for instance, it has | |
736 | * just seen -> and it knows that the next char is a word char, then | |
737 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
738 | * | |
739 | * Arguments: | |
b1b65b59 | 740 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
741 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
742 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
743 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
744 | * int allow_pack : if true, : characters will also be allowed (require, | |
745 | * use, etc. do this) | |
9cbb5ea2 | 746 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
747 | */ |
748 | ||
76e3520e | 749 | STATIC char * |
cea2e8a9 | 750 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 751 | { |
463ee0b2 LW |
752 | register char *s; |
753 | STRLEN len; | |
754 | ||
755 | start = skipspace(start); | |
756 | s = start; | |
7e2040f0 | 757 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 758 | (allow_pack && *s == ':') || |
15f0808c | 759 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 760 | { |
3280af22 NIS |
761 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
762 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
763 | return start; |
764 | if (token == METHOD) { | |
765 | s = skipspace(s); | |
766 | if (*s == '(') | |
3280af22 | 767 | PL_expect = XTERM; |
463ee0b2 | 768 | else { |
3280af22 | 769 | PL_expect = XOPERATOR; |
463ee0b2 | 770 | } |
79072805 | 771 | } |
3280af22 NIS |
772 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
773 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
774 | force_next(token); |
775 | } | |
776 | return s; | |
777 | } | |
778 | ||
ffb4593c NT |
779 | /* |
780 | * S_force_ident | |
9cbb5ea2 | 781 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
782 | * text only contains the "foo" portion. The first argument is a pointer |
783 | * to the "foo", and the second argument is the type symbol to prefix. | |
784 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 785 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
786 | */ |
787 | ||
76e3520e | 788 | STATIC void |
cea2e8a9 | 789 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
790 | { |
791 | if (s && *s) { | |
11343788 | 792 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 793 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 794 | force_next(WORD); |
748a9306 | 795 | if (kind) { |
e858de61 | 796 | dTHR; /* just for in_eval */ |
11343788 | 797 | o->op_private = OPpCONST_ENTERED; |
55497cff | 798 | /* XXX see note in pp_entereval() for why we forgo typo |
799 | warnings if the symbol must be introduced in an eval. | |
800 | GSAR 96-10-12 */ | |
3280af22 | 801 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
802 | kind == '$' ? SVt_PV : |
803 | kind == '@' ? SVt_PVAV : | |
804 | kind == '%' ? SVt_PVHV : | |
805 | SVt_PVGV | |
806 | ); | |
748a9306 | 807 | } |
79072805 LW |
808 | } |
809 | } | |
810 | ||
ffb4593c NT |
811 | /* |
812 | * S_force_version | |
813 | * Forces the next token to be a version number. | |
814 | */ | |
815 | ||
76e3520e | 816 | STATIC char * |
cea2e8a9 | 817 | S_force_version(pTHX_ char *s) |
89bfa8cd | 818 | { |
819 | OP *version = Nullop; | |
820 | ||
821 | s = skipspace(s); | |
822 | ||
a7cb1f99 GS |
823 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
824 | char *d = s; | |
825 | if (*d == 'v') | |
826 | d++; | |
827 | for (; isDIGIT(*d) || *d == '_' || *d == '.'; d++); | |
9f3d182e | 828 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
89bfa8cd | 829 | s = scan_num(s); |
830 | /* real VERSION number -- GBARR */ | |
831 | version = yylval.opval; | |
832 | } | |
833 | } | |
834 | ||
835 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 836 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 837 | force_next(WORD); |
838 | ||
839 | return (s); | |
840 | } | |
841 | ||
ffb4593c NT |
842 | /* |
843 | * S_tokeq | |
844 | * Tokenize a quoted string passed in as an SV. It finds the next | |
845 | * chunk, up to end of string or a backslash. It may make a new | |
846 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
847 | * turns \\ into \. | |
848 | */ | |
849 | ||
76e3520e | 850 | STATIC SV * |
cea2e8a9 | 851 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
852 | { |
853 | register char *s; | |
854 | register char *send; | |
855 | register char *d; | |
b3ac6de7 IZ |
856 | STRLEN len = 0; |
857 | SV *pv = sv; | |
79072805 LW |
858 | |
859 | if (!SvLEN(sv)) | |
b3ac6de7 | 860 | goto finish; |
79072805 | 861 | |
a0d0e21e | 862 | s = SvPV_force(sv, len); |
748a9306 | 863 | if (SvIVX(sv) == -1) |
b3ac6de7 | 864 | goto finish; |
463ee0b2 | 865 | send = s + len; |
79072805 LW |
866 | while (s < send && *s != '\\') |
867 | s++; | |
868 | if (s == send) | |
b3ac6de7 | 869 | goto finish; |
79072805 | 870 | d = s; |
3280af22 | 871 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 872 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
873 | while (s < send) { |
874 | if (*s == '\\') { | |
a0d0e21e | 875 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
876 | s++; /* all that, just for this */ |
877 | } | |
878 | *d++ = *s++; | |
879 | } | |
880 | *d = '\0'; | |
463ee0b2 | 881 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 882 | finish: |
3280af22 | 883 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 884 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
885 | return sv; |
886 | } | |
887 | ||
ffb4593c NT |
888 | /* |
889 | * Now come three functions related to double-quote context, | |
890 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
891 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
892 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
893 | * to handle functions and concatenation. | |
894 | * They assume that whoever calls them will be setting up a fake | |
895 | * join call, because each subthing puts a ',' after it. This lets | |
896 | * "lower \luPpEr" | |
897 | * become | |
898 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
899 | * | |
900 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
901 | * arguments and join's arguments are created or not). | |
902 | */ | |
903 | ||
904 | /* | |
905 | * S_sublex_start | |
906 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
907 | * | |
908 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
909 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
910 | * | |
911 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
912 | * | |
913 | * Everything else becomes a FUNC. | |
914 | * | |
915 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
916 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
917 | * call to S_sublex_push(). | |
918 | */ | |
919 | ||
76e3520e | 920 | STATIC I32 |
cea2e8a9 | 921 | S_sublex_start(pTHX) |
79072805 LW |
922 | { |
923 | register I32 op_type = yylval.ival; | |
79072805 LW |
924 | |
925 | if (op_type == OP_NULL) { | |
3280af22 NIS |
926 | yylval.opval = PL_lex_op; |
927 | PL_lex_op = Nullop; | |
79072805 LW |
928 | return THING; |
929 | } | |
930 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 931 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
932 | |
933 | if (SvTYPE(sv) == SVt_PVIV) { | |
934 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
935 | STRLEN len; | |
936 | char *p; | |
937 | SV *nsv; | |
938 | ||
939 | p = SvPV(sv, len); | |
79cb57f6 | 940 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
941 | SvREFCNT_dec(sv); |
942 | sv = nsv; | |
943 | } | |
944 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 945 | PL_lex_stuff = Nullsv; |
79072805 LW |
946 | return THING; |
947 | } | |
948 | ||
3280af22 NIS |
949 | PL_sublex_info.super_state = PL_lex_state; |
950 | PL_sublex_info.sub_inwhat = op_type; | |
951 | PL_sublex_info.sub_op = PL_lex_op; | |
952 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 953 | |
3280af22 NIS |
954 | PL_expect = XTERM; |
955 | if (PL_lex_op) { | |
956 | yylval.opval = PL_lex_op; | |
957 | PL_lex_op = Nullop; | |
55497cff | 958 | return PMFUNC; |
959 | } | |
960 | else | |
961 | return FUNC; | |
962 | } | |
963 | ||
ffb4593c NT |
964 | /* |
965 | * S_sublex_push | |
966 | * Create a new scope to save the lexing state. The scope will be | |
967 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
968 | * to the uc, lc, etc. found before. | |
969 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
970 | */ | |
971 | ||
76e3520e | 972 | STATIC I32 |
cea2e8a9 | 973 | S_sublex_push(pTHX) |
55497cff | 974 | { |
0f15f207 | 975 | dTHR; |
f46d017c | 976 | ENTER; |
55497cff | 977 | |
3280af22 NIS |
978 | PL_lex_state = PL_sublex_info.super_state; |
979 | SAVEI32(PL_lex_dojoin); | |
980 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
981 | SAVEI32(PL_lex_casemods); |
982 | SAVEI32(PL_lex_starts); | |
983 | SAVEI32(PL_lex_state); | |
7766f137 | 984 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 985 | SAVEI32(PL_lex_inwhat); |
57843af0 | 986 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
987 | SAVEPPTR(PL_bufptr); |
988 | SAVEPPTR(PL_oldbufptr); | |
989 | SAVEPPTR(PL_oldoldbufptr); | |
990 | SAVEPPTR(PL_linestart); | |
991 | SAVESPTR(PL_linestr); | |
992 | SAVEPPTR(PL_lex_brackstack); | |
993 | SAVEPPTR(PL_lex_casestack); | |
994 | ||
995 | PL_linestr = PL_lex_stuff; | |
996 | PL_lex_stuff = Nullsv; | |
997 | ||
9cbb5ea2 GS |
998 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
999 | = SvPVX(PL_linestr); | |
3280af22 NIS |
1000 | PL_bufend += SvCUR(PL_linestr); |
1001 | SAVEFREESV(PL_linestr); | |
1002 | ||
1003 | PL_lex_dojoin = FALSE; | |
1004 | PL_lex_brackets = 0; | |
3280af22 NIS |
1005 | New(899, PL_lex_brackstack, 120, char); |
1006 | New(899, PL_lex_casestack, 12, char); | |
1007 | SAVEFREEPV(PL_lex_brackstack); | |
1008 | SAVEFREEPV(PL_lex_casestack); | |
1009 | PL_lex_casemods = 0; | |
1010 | *PL_lex_casestack = '\0'; | |
1011 | PL_lex_starts = 0; | |
1012 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1013 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1014 | |
1015 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1016 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1017 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1018 | else |
3280af22 | 1019 | PL_lex_inpat = Nullop; |
79072805 | 1020 | |
55497cff | 1021 | return '('; |
79072805 LW |
1022 | } |
1023 | ||
ffb4593c NT |
1024 | /* |
1025 | * S_sublex_done | |
1026 | * Restores lexer state after a S_sublex_push. | |
1027 | */ | |
1028 | ||
76e3520e | 1029 | STATIC I32 |
cea2e8a9 | 1030 | S_sublex_done(pTHX) |
79072805 | 1031 | { |
3280af22 NIS |
1032 | if (!PL_lex_starts++) { |
1033 | PL_expect = XOPERATOR; | |
79cb57f6 | 1034 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1035 | return THING; |
1036 | } | |
1037 | ||
3280af22 NIS |
1038 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1039 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1040 | return yylex(); |
79072805 LW |
1041 | } |
1042 | ||
ffb4593c | 1043 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1044 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1045 | PL_linestr = PL_lex_repl; | |
1046 | PL_lex_inpat = 0; | |
1047 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1048 | PL_bufend += SvCUR(PL_linestr); | |
1049 | SAVEFREESV(PL_linestr); | |
1050 | PL_lex_dojoin = FALSE; | |
1051 | PL_lex_brackets = 0; | |
3280af22 NIS |
1052 | PL_lex_casemods = 0; |
1053 | *PL_lex_casestack = '\0'; | |
1054 | PL_lex_starts = 0; | |
25da4f38 | 1055 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1056 | PL_lex_state = LEX_INTERPNORMAL; |
1057 | PL_lex_starts++; | |
e9fa98b2 HS |
1058 | /* we don't clear PL_lex_repl here, so that we can check later |
1059 | whether this is an evalled subst; that means we rely on the | |
1060 | logic to ensure sublex_done() is called again only via the | |
1061 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1062 | } |
e9fa98b2 | 1063 | else { |
3280af22 | 1064 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1065 | PL_lex_repl = Nullsv; |
1066 | } | |
79072805 | 1067 | return ','; |
ffed7fef LW |
1068 | } |
1069 | else { | |
f46d017c | 1070 | LEAVE; |
3280af22 NIS |
1071 | PL_bufend = SvPVX(PL_linestr); |
1072 | PL_bufend += SvCUR(PL_linestr); | |
1073 | PL_expect = XOPERATOR; | |
09bef843 | 1074 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1075 | return ')'; |
ffed7fef LW |
1076 | } |
1077 | } | |
1078 | ||
02aa26ce NT |
1079 | /* |
1080 | scan_const | |
1081 | ||
1082 | Extracts a pattern, double-quoted string, or transliteration. This | |
1083 | is terrifying code. | |
1084 | ||
3280af22 NIS |
1085 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1086 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1087 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1088 | ||
9b599b2a GS |
1089 | Returns a pointer to the character scanned up to. Iff this is |
1090 | advanced from the start pointer supplied (ie if anything was | |
1091 | successfully parsed), will leave an OP for the substring scanned | |
1092 | in yylval. Caller must intuit reason for not parsing further | |
1093 | by looking at the next characters herself. | |
1094 | ||
02aa26ce NT |
1095 | In patterns: |
1096 | backslashes: | |
1097 | double-quoted style: \r and \n | |
1098 | regexp special ones: \D \s | |
1099 | constants: \x3 | |
1100 | backrefs: \1 (deprecated in substitution replacements) | |
1101 | case and quoting: \U \Q \E | |
1102 | stops on @ and $, but not for $ as tail anchor | |
1103 | ||
1104 | In transliterations: | |
1105 | characters are VERY literal, except for - not at the start or end | |
1106 | of the string, which indicates a range. scan_const expands the | |
1107 | range to the full set of intermediate characters. | |
1108 | ||
1109 | In double-quoted strings: | |
1110 | backslashes: | |
1111 | double-quoted style: \r and \n | |
1112 | constants: \x3 | |
1113 | backrefs: \1 (deprecated) | |
1114 | case and quoting: \U \Q \E | |
1115 | stops on @ and $ | |
1116 | ||
1117 | scan_const does *not* construct ops to handle interpolated strings. | |
1118 | It stops processing as soon as it finds an embedded $ or @ variable | |
1119 | and leaves it to the caller to work out what's going on. | |
1120 | ||
1121 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1122 | ||
1123 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1124 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1125 | followed by one of ")| \n\t" | |
1126 | ||
1127 | \1 (backreferences) are turned into $1 | |
1128 | ||
1129 | The structure of the code is | |
1130 | while (there's a character to process) { | |
1131 | handle transliteration ranges | |
1132 | skip regexp comments | |
1133 | skip # initiated comments in //x patterns | |
1134 | check for embedded @foo | |
1135 | check for embedded scalars | |
1136 | if (backslash) { | |
1137 | leave intact backslashes from leave (below) | |
1138 | deprecate \1 in strings and sub replacements | |
1139 | handle string-changing backslashes \l \U \Q \E, etc. | |
1140 | switch (what was escaped) { | |
1141 | handle - in a transliteration (becomes a literal -) | |
1142 | handle \132 octal characters | |
1143 | handle 0x15 hex characters | |
1144 | handle \cV (control V) | |
1145 | handle printf backslashes (\f, \r, \n, etc) | |
1146 | } (end switch) | |
1147 | } (end if backslash) | |
1148 | } (end while character to read) | |
1149 | ||
1150 | */ | |
1151 | ||
76e3520e | 1152 | STATIC char * |
cea2e8a9 | 1153 | S_scan_const(pTHX_ char *start) |
79072805 | 1154 | { |
3280af22 | 1155 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1156 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1157 | register char *s = start; /* start of the constant */ | |
1158 | register char *d = SvPVX(sv); /* destination for copies */ | |
1159 | bool dorange = FALSE; /* are we in a translit range? */ | |
7e2040f0 | 1160 | bool has_utf = FALSE; /* embedded \x{} */ |
02aa26ce | 1161 | I32 len; /* ? */ |
ac2262e3 | 1162 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1163 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1164 | : UTF; | |
ac2262e3 | 1165 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1166 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1167 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1168 | : UTF; |
dff6d3cd | 1169 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1170 | PL_lex_inpat |
4a2d328f | 1171 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1172 | : ""; |
79072805 LW |
1173 | |
1174 | while (s < send || dorange) { | |
02aa26ce | 1175 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1176 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1177 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1178 | if (dorange) { |
02aa26ce | 1179 | I32 i; /* current expanded character */ |
8ada0baa | 1180 | I32 min; /* first character in range */ |
02aa26ce NT |
1181 | I32 max; /* last character in range */ |
1182 | ||
1183 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1184 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1185 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1186 | d -= 2; /* eat the first char and the - */ |
1187 | ||
8ada0baa JH |
1188 | min = (U8)*d; /* first char in range */ |
1189 | max = (U8)d[1]; /* last char in range */ | |
1190 | ||
1191 | #ifndef ASCIIish | |
1192 | if ((isLOWER(min) && isLOWER(max)) || | |
1193 | (isUPPER(min) && isUPPER(max))) { | |
1194 | if (isLOWER(min)) { | |
1195 | for (i = min; i <= max; i++) | |
1196 | if (isLOWER(i)) | |
1197 | *d++ = i; | |
1198 | } else { | |
1199 | for (i = min; i <= max; i++) | |
1200 | if (isUPPER(i)) | |
1201 | *d++ = i; | |
1202 | } | |
1203 | } | |
1204 | else | |
1205 | #endif | |
1206 | for (i = min; i <= max; i++) | |
1207 | *d++ = i; | |
02aa26ce NT |
1208 | |
1209 | /* mark the range as done, and continue */ | |
79072805 LW |
1210 | dorange = FALSE; |
1211 | continue; | |
1212 | } | |
02aa26ce NT |
1213 | |
1214 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1215 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1216 | if (utf) { |
a176fa2a | 1217 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1218 | s++; |
1219 | continue; | |
1220 | } | |
79072805 LW |
1221 | dorange = TRUE; |
1222 | s++; | |
1223 | } | |
1224 | } | |
02aa26ce NT |
1225 | |
1226 | /* if we get here, we're not doing a transliteration */ | |
1227 | ||
0f5d15d6 IZ |
1228 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1229 | except for the last char, which will be done separately. */ | |
3280af22 | 1230 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1231 | if (s[2] == '#') { |
1232 | while (s < send && *s != ')') | |
1233 | *d++ = *s++; | |
0f5d15d6 IZ |
1234 | } else if (s[2] == '{' |
1235 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1236 | I32 count = 1; |
0f5d15d6 | 1237 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1238 | char c; |
1239 | ||
d9f97599 GS |
1240 | while (count && (c = *regparse)) { |
1241 | if (c == '\\' && regparse[1]) | |
1242 | regparse++; | |
cc6b7395 IZ |
1243 | else if (c == '{') |
1244 | count++; | |
1245 | else if (c == '}') | |
1246 | count--; | |
d9f97599 | 1247 | regparse++; |
cc6b7395 | 1248 | } |
5bdf89e7 IZ |
1249 | if (*regparse != ')') { |
1250 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1251 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1252 | } |
0f5d15d6 | 1253 | while (s < regparse) |
cc6b7395 IZ |
1254 | *d++ = *s++; |
1255 | } | |
748a9306 | 1256 | } |
02aa26ce NT |
1257 | |
1258 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1259 | else if (*s == '#' && PL_lex_inpat && |
1260 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1261 | while (s+1 < send && *s != '\n') |
1262 | *d++ = *s++; | |
1263 | } | |
02aa26ce NT |
1264 | |
1265 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
7e2040f0 GS |
1266 | else if (*s == '@' && s[1] |
1267 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$", s[1]))) | |
79072805 | 1268 | break; |
02aa26ce NT |
1269 | |
1270 | /* check for embedded scalars. only stop if we're sure it's a | |
1271 | variable. | |
1272 | */ | |
79072805 | 1273 | else if (*s == '$') { |
3280af22 | 1274 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1275 | break; |
c277df42 | 1276 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1277 | break; /* in regexp, $ might be tail anchor */ |
1278 | } | |
02aa26ce | 1279 | |
a0ed51b3 LW |
1280 | /* (now in tr/// code again) */ |
1281 | ||
d008e5eb GS |
1282 | if (*s & 0x80 && thisutf) { |
1283 | dTHR; /* only for ckWARN */ | |
1284 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1285 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb | 1286 | if (len) { |
b1c7b182 | 1287 | has_utf = TRUE; |
d008e5eb GS |
1288 | while (len--) |
1289 | *d++ = *s++; | |
1290 | continue; | |
1291 | } | |
a0ed51b3 | 1292 | } |
b1c7b182 GS |
1293 | else |
1294 | has_utf = TRUE; /* assume valid utf8 */ | |
a0ed51b3 LW |
1295 | } |
1296 | ||
02aa26ce | 1297 | /* backslashes */ |
79072805 LW |
1298 | if (*s == '\\' && s+1 < send) { |
1299 | s++; | |
02aa26ce NT |
1300 | |
1301 | /* some backslashes we leave behind */ | |
c9f97d15 | 1302 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1303 | *d++ = '\\'; |
1304 | *d++ = *s++; | |
1305 | continue; | |
1306 | } | |
02aa26ce NT |
1307 | |
1308 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1309 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1310 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1311 | { |
d008e5eb | 1312 | dTHR; /* only for ckWARN */ |
599cee73 | 1313 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1314 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1315 | *--s = '$'; |
1316 | break; | |
1317 | } | |
02aa26ce NT |
1318 | |
1319 | /* string-change backslash escapes */ | |
3280af22 | 1320 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1321 | --s; |
1322 | break; | |
1323 | } | |
02aa26ce NT |
1324 | |
1325 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1326 | switch (*s) { |
02aa26ce NT |
1327 | |
1328 | /* quoted - in transliterations */ | |
79072805 | 1329 | case '-': |
3280af22 | 1330 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1331 | *d++ = *s++; |
1332 | continue; | |
1333 | } | |
1334 | /* FALL THROUGH */ | |
1335 | default: | |
11b8faa4 JH |
1336 | { |
1337 | dTHR; | |
1338 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
cea2e8a9 | 1339 | Perl_warner(aTHX_ WARN_UNSAFE, |
11b8faa4 JH |
1340 | "Unrecognized escape \\%c passed through", |
1341 | *s); | |
1342 | /* default action is to copy the quoted character */ | |
1343 | *d++ = *s++; | |
1344 | continue; | |
1345 | } | |
02aa26ce NT |
1346 | |
1347 | /* \132 indicates an octal constant */ | |
79072805 LW |
1348 | case '0': case '1': case '2': case '3': |
1349 | case '4': case '5': case '6': case '7': | |
dff6d3cd | 1350 | *d++ = (char)scan_oct(s, 3, &len); |
79072805 LW |
1351 | s += len; |
1352 | continue; | |
02aa26ce NT |
1353 | |
1354 | /* \x24 indicates a hex constant */ | |
79072805 | 1355 | case 'x': |
a0ed51b3 LW |
1356 | ++s; |
1357 | if (*s == '{') { | |
1358 | char* e = strchr(s, '}'); | |
234a4bc6 | 1359 | UV uv; |
a0ed51b3 | 1360 | |
adaeee49 | 1361 | if (!e) { |
a0ed51b3 | 1362 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1363 | e = s; |
1364 | } | |
a0ed51b3 | 1365 | /* note: utf always shorter than hex */ |
234a4bc6 GS |
1366 | uv = (UV)scan_hex(s + 1, e - s - 1, &len); |
1367 | if (uv > 127) { | |
1368 | d = (char*)uv_to_utf8((U8*)d, uv); | |
1369 | has_utf = TRUE; | |
1370 | } | |
1371 | else | |
1372 | *d++ = (char)uv; | |
a0ed51b3 | 1373 | s = e + 1; |
a0ed51b3 LW |
1374 | } |
1375 | else { | |
234a4bc6 | 1376 | /* XXX collapse this branch into the one above */ |
a0ed51b3 LW |
1377 | UV uv = (UV)scan_hex(s, 2, &len); |
1378 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1379 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1380 | { | |
dfe13c55 | 1381 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
7e2040f0 | 1382 | has_utf = TRUE; |
a0ed51b3 LW |
1383 | } |
1384 | else { | |
d008e5eb GS |
1385 | if (uv >= 127 && UTF) { |
1386 | dTHR; | |
1387 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1388 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb | 1389 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", |
894356b3 | 1390 | (int)len,s,(int)len,s); |
d008e5eb | 1391 | } |
a0ed51b3 LW |
1392 | *d++ = (char)uv; |
1393 | } | |
1394 | s += len; | |
1395 | } | |
79072805 | 1396 | continue; |
02aa26ce | 1397 | |
4a2d328f IZ |
1398 | /* \N{latin small letter a} is a named character */ |
1399 | case 'N': | |
423cee85 JH |
1400 | ++s; |
1401 | if (*s == '{') { | |
1402 | char* e = strchr(s, '}'); | |
1403 | HV *hv; | |
1404 | SV **svp; | |
1405 | SV *res, *cv; | |
1406 | STRLEN len; | |
1407 | char *str; | |
1408 | char *why = Nullch; | |
1409 | ||
1410 | if (!e) { | |
5777a3f7 | 1411 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1412 | e = s - 1; |
1413 | goto cont_scan; | |
1414 | } | |
1415 | res = newSVpvn(s + 1, e - s - 1); | |
1416 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1417 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1418 | str = SvPV(res,len); |
1419 | if (len > e - s + 4) { | |
1420 | char *odest = SvPVX(sv); | |
1421 | ||
1422 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1423 | d = SvPVX(sv) + (d - odest); | |
1424 | } | |
1425 | Copy(str, d, len, char); | |
1426 | d += len; | |
1427 | SvREFCNT_dec(res); | |
1428 | cont_scan: | |
1429 | s = e + 1; | |
1430 | } | |
1431 | else | |
5777a3f7 | 1432 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1433 | continue; |
1434 | ||
02aa26ce | 1435 | /* \c is a control character */ |
79072805 LW |
1436 | case 'c': |
1437 | s++; | |
9d116dd7 JH |
1438 | #ifdef EBCDIC |
1439 | *d = *s++; | |
1440 | if (isLOWER(*d)) | |
1441 | *d = toUPPER(*d); | |
1442 | *d++ = toCTRL(*d); | |
1443 | #else | |
bbce6d69 | 1444 | len = *s++; |
1445 | *d++ = toCTRL(len); | |
9d116dd7 | 1446 | #endif |
79072805 | 1447 | continue; |
02aa26ce NT |
1448 | |
1449 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1450 | case 'b': |
1451 | *d++ = '\b'; | |
1452 | break; | |
1453 | case 'n': | |
1454 | *d++ = '\n'; | |
1455 | break; | |
1456 | case 'r': | |
1457 | *d++ = '\r'; | |
1458 | break; | |
1459 | case 'f': | |
1460 | *d++ = '\f'; | |
1461 | break; | |
1462 | case 't': | |
1463 | *d++ = '\t'; | |
1464 | break; | |
34a3fe2a PP |
1465 | #ifdef EBCDIC |
1466 | case 'e': | |
1467 | *d++ = '\047'; /* CP 1047 */ | |
1468 | break; | |
1469 | case 'a': | |
1470 | *d++ = '\057'; /* CP 1047 */ | |
1471 | break; | |
1472 | #else | |
79072805 LW |
1473 | case 'e': |
1474 | *d++ = '\033'; | |
1475 | break; | |
1476 | case 'a': | |
1477 | *d++ = '\007'; | |
1478 | break; | |
34a3fe2a | 1479 | #endif |
02aa26ce NT |
1480 | } /* end switch */ |
1481 | ||
79072805 LW |
1482 | s++; |
1483 | continue; | |
02aa26ce NT |
1484 | } /* end if (backslash) */ |
1485 | ||
79072805 | 1486 | *d++ = *s++; |
02aa26ce NT |
1487 | } /* while loop to process each character */ |
1488 | ||
1489 | /* terminate the string and set up the sv */ | |
79072805 | 1490 | *d = '\0'; |
463ee0b2 | 1491 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 | 1492 | SvPOK_on(sv); |
7e2040f0 GS |
1493 | if (has_utf) |
1494 | SvUTF8_on(sv); | |
79072805 | 1495 | |
02aa26ce | 1496 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1497 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1498 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1499 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1500 | } |
02aa26ce | 1501 | |
9b599b2a | 1502 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1503 | if (s > PL_bufptr) { |
1504 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1505 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1506 | sv, Nullsv, |
3280af22 | 1507 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1508 | ? "tr" |
3280af22 | 1509 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1510 | ? "s" |
1511 | : "qq"))); | |
79072805 | 1512 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1513 | } else |
8990e307 | 1514 | SvREFCNT_dec(sv); |
79072805 LW |
1515 | return s; |
1516 | } | |
1517 | ||
ffb4593c NT |
1518 | /* S_intuit_more |
1519 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1520 | * FALSE otherwise. | |
ffb4593c NT |
1521 | * |
1522 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1523 | * | |
1524 | * ->[ and ->{ return TRUE | |
1525 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1526 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1527 | * if we're in a pattern and the first char is a { | |
1528 | * {4,5} (any digits around the comma) returns FALSE | |
1529 | * if we're in a pattern and the first char is a [ | |
1530 | * [] returns FALSE | |
1531 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1532 | * character class or not. It has to deal with things like | |
1533 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1534 | * anything else returns TRUE | |
1535 | */ | |
1536 | ||
9cbb5ea2 GS |
1537 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1538 | ||
76e3520e | 1539 | STATIC int |
cea2e8a9 | 1540 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1541 | { |
3280af22 | 1542 | if (PL_lex_brackets) |
79072805 LW |
1543 | return TRUE; |
1544 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1545 | return TRUE; | |
1546 | if (*s != '{' && *s != '[') | |
1547 | return FALSE; | |
3280af22 | 1548 | if (!PL_lex_inpat) |
79072805 LW |
1549 | return TRUE; |
1550 | ||
1551 | /* In a pattern, so maybe we have {n,m}. */ | |
1552 | if (*s == '{') { | |
1553 | s++; | |
1554 | if (!isDIGIT(*s)) | |
1555 | return TRUE; | |
1556 | while (isDIGIT(*s)) | |
1557 | s++; | |
1558 | if (*s == ',') | |
1559 | s++; | |
1560 | while (isDIGIT(*s)) | |
1561 | s++; | |
1562 | if (*s == '}') | |
1563 | return FALSE; | |
1564 | return TRUE; | |
1565 | ||
1566 | } | |
1567 | ||
1568 | /* On the other hand, maybe we have a character class */ | |
1569 | ||
1570 | s++; | |
1571 | if (*s == ']' || *s == '^') | |
1572 | return FALSE; | |
1573 | else { | |
ffb4593c | 1574 | /* this is terrifying, and it works */ |
79072805 LW |
1575 | int weight = 2; /* let's weigh the evidence */ |
1576 | char seen[256]; | |
f27ffc4a | 1577 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1578 | char *send = strchr(s,']'); |
3280af22 | 1579 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1580 | |
1581 | if (!send) /* has to be an expression */ | |
1582 | return TRUE; | |
1583 | ||
1584 | Zero(seen,256,char); | |
1585 | if (*s == '$') | |
1586 | weight -= 3; | |
1587 | else if (isDIGIT(*s)) { | |
1588 | if (s[1] != ']') { | |
1589 | if (isDIGIT(s[1]) && s[2] == ']') | |
1590 | weight -= 10; | |
1591 | } | |
1592 | else | |
1593 | weight -= 100; | |
1594 | } | |
1595 | for (; s < send; s++) { | |
1596 | last_un_char = un_char; | |
1597 | un_char = (unsigned char)*s; | |
1598 | switch (*s) { | |
1599 | case '@': | |
1600 | case '&': | |
1601 | case '$': | |
1602 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1603 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1604 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1605 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1606 | weight -= 100; |
1607 | else | |
1608 | weight -= 10; | |
1609 | } | |
1610 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1611 | strchr("[#!%*<>()-=",s[1])) { |
1612 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1613 | weight -= 10; |
1614 | else | |
1615 | weight -= 1; | |
1616 | } | |
1617 | break; | |
1618 | case '\\': | |
1619 | un_char = 254; | |
1620 | if (s[1]) { | |
93a17b20 | 1621 | if (strchr("wds]",s[1])) |
79072805 LW |
1622 | weight += 100; |
1623 | else if (seen['\''] || seen['"']) | |
1624 | weight += 1; | |
93a17b20 | 1625 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1626 | weight += 40; |
1627 | else if (isDIGIT(s[1])) { | |
1628 | weight += 40; | |
1629 | while (s[1] && isDIGIT(s[1])) | |
1630 | s++; | |
1631 | } | |
1632 | } | |
1633 | else | |
1634 | weight += 100; | |
1635 | break; | |
1636 | case '-': | |
1637 | if (s[1] == '\\') | |
1638 | weight += 50; | |
93a17b20 | 1639 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1640 | weight += 30; |
93a17b20 | 1641 | if (strchr("zZ79~",s[1])) |
79072805 | 1642 | weight += 30; |
f27ffc4a GS |
1643 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1644 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1645 | break; |
1646 | default: | |
93a17b20 | 1647 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1648 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1649 | char *d = tmpbuf; | |
1650 | while (isALPHA(*s)) | |
1651 | *d++ = *s++; | |
1652 | *d = '\0'; | |
1653 | if (keyword(tmpbuf, d - tmpbuf)) | |
1654 | weight -= 150; | |
1655 | } | |
1656 | if (un_char == last_un_char + 1) | |
1657 | weight += 5; | |
1658 | weight -= seen[un_char]; | |
1659 | break; | |
1660 | } | |
1661 | seen[un_char]++; | |
1662 | } | |
1663 | if (weight >= 0) /* probably a character class */ | |
1664 | return FALSE; | |
1665 | } | |
1666 | ||
1667 | return TRUE; | |
1668 | } | |
ffed7fef | 1669 | |
ffb4593c NT |
1670 | /* |
1671 | * S_intuit_method | |
1672 | * | |
1673 | * Does all the checking to disambiguate | |
1674 | * foo bar | |
1675 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1676 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1677 | * | |
1678 | * First argument is the stuff after the first token, e.g. "bar". | |
1679 | * | |
1680 | * Not a method if bar is a filehandle. | |
1681 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1682 | * Not a method if it's really "Foo $bar" | |
1683 | * Method if it's "foo $bar" | |
1684 | * Not a method if it's really "print foo $bar" | |
1685 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1686 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
3cb0bbe5 | 1687 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
1688 | * => |
1689 | */ | |
1690 | ||
76e3520e | 1691 | STATIC int |
cea2e8a9 | 1692 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1693 | { |
1694 | char *s = start + (*start == '$'); | |
3280af22 | 1695 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1696 | STRLEN len; |
1697 | GV* indirgv; | |
1698 | ||
1699 | if (gv) { | |
b6c543e3 | 1700 | CV *cv; |
a0d0e21e LW |
1701 | if (GvIO(gv)) |
1702 | return 0; | |
b6c543e3 IZ |
1703 | if ((cv = GvCVu(gv))) { |
1704 | char *proto = SvPVX(cv); | |
1705 | if (proto) { | |
1706 | if (*proto == ';') | |
1707 | proto++; | |
1708 | if (*proto == '*') | |
1709 | return 0; | |
1710 | } | |
1711 | } else | |
a0d0e21e LW |
1712 | gv = 0; |
1713 | } | |
8903cb82 | 1714 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1715 | /* start is the beginning of the possible filehandle/object, |
1716 | * and s is the end of it | |
1717 | * tmpbuf is a copy of it | |
1718 | */ | |
1719 | ||
a0d0e21e | 1720 | if (*start == '$') { |
3280af22 | 1721 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1722 | return 0; |
1723 | s = skipspace(s); | |
3280af22 NIS |
1724 | PL_bufptr = start; |
1725 | PL_expect = XREF; | |
a0d0e21e LW |
1726 | return *s == '(' ? FUNCMETH : METHOD; |
1727 | } | |
1728 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1729 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1730 | len -= 2; | |
1731 | tmpbuf[len] = '\0'; | |
1732 | goto bare_package; | |
1733 | } | |
1734 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1735 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1736 | return 0; |
1737 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1738 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1739 | s = skipspace(s); |
3280af22 | 1740 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1741 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1742 | bare_package: |
3280af22 | 1743 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1744 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1745 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1746 | PL_expect = XTERM; | |
a0d0e21e | 1747 | force_next(WORD); |
3280af22 | 1748 | PL_bufptr = s; |
a0d0e21e LW |
1749 | return *s == '(' ? FUNCMETH : METHOD; |
1750 | } | |
1751 | } | |
1752 | return 0; | |
1753 | } | |
1754 | ||
ffb4593c NT |
1755 | /* |
1756 | * S_incl_perldb | |
1757 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1758 | * is set, it will return the contents of that, otherwise a | |
1759 | * compile-time require of perl5db.pl. | |
1760 | */ | |
1761 | ||
76e3520e | 1762 | STATIC char* |
cea2e8a9 | 1763 | S_incl_perldb(pTHX) |
a0d0e21e | 1764 | { |
3280af22 | 1765 | if (PL_perldb) { |
76e3520e | 1766 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1767 | |
1768 | if (pdb) | |
1769 | return pdb; | |
61bb5906 | 1770 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1771 | return "BEGIN { require 'perl5db.pl' }"; |
1772 | } | |
1773 | return ""; | |
1774 | } | |
1775 | ||
1776 | ||
16d20bd9 AD |
1777 | /* Encoded script support. filter_add() effectively inserts a |
1778 | * 'pre-processing' function into the current source input stream. | |
1779 | * Note that the filter function only applies to the current source file | |
1780 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1781 | * | |
1782 | * The datasv parameter (which may be NULL) can be used to pass | |
1783 | * private data to this instance of the filter. The filter function | |
1784 | * can recover the SV using the FILTER_DATA macro and use it to | |
1785 | * store private buffers and state information. | |
1786 | * | |
1787 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1788 | * and the IoDIRP field is used to store the function pointer, |
1789 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1790 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1791 | * private use must be set using malloc'd pointers. | |
1792 | */ | |
16d20bd9 AD |
1793 | |
1794 | SV * | |
864dbfa3 | 1795 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1796 | { |
f4c556ac GS |
1797 | if (!funcp) |
1798 | return Nullsv; | |
1799 | ||
3280af22 NIS |
1800 | if (!PL_rsfp_filters) |
1801 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1802 | if (!datasv) |
8c52afec | 1803 | datasv = NEWSV(255,0); |
16d20bd9 | 1804 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1805 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1806 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1807 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1808 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1809 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1810 | av_unshift(PL_rsfp_filters, 1); |
1811 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1812 | return(datasv); |
1813 | } | |
1814 | ||
1815 | ||
1816 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1817 | void |
864dbfa3 | 1818 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1819 | { |
e0c19803 | 1820 | SV *datasv; |
f4c556ac | 1821 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1822 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1823 | return; |
1824 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1825 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1826 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1827 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1828 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1829 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1830 | |
16d20bd9 AD |
1831 | return; |
1832 | } | |
1833 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1834 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1835 | } |
1836 | ||
1837 | ||
1838 | /* Invoke the n'th filter function for the current rsfp. */ | |
1839 | I32 | |
864dbfa3 | 1840 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1841 | |
1842 | ||
1843 | /* 0 = read one text line */ | |
a0d0e21e | 1844 | { |
16d20bd9 AD |
1845 | filter_t funcp; |
1846 | SV *datasv = NULL; | |
e50aee73 | 1847 | |
3280af22 | 1848 | if (!PL_rsfp_filters) |
16d20bd9 | 1849 | return -1; |
3280af22 | 1850 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1851 | /* Provide a default input filter to make life easy. */ |
1852 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1853 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1854 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1855 | if (maxlen) { |
1856 | /* Want a block */ | |
1857 | int len ; | |
1858 | int old_len = SvCUR(buf_sv) ; | |
1859 | ||
1860 | /* ensure buf_sv is large enough */ | |
1861 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1862 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1863 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1864 | return -1; /* error */ |
1865 | else | |
1866 | return 0 ; /* end of file */ | |
1867 | } | |
16d20bd9 AD |
1868 | SvCUR_set(buf_sv, old_len + len) ; |
1869 | } else { | |
1870 | /* Want a line */ | |
3280af22 NIS |
1871 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1872 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1873 | return -1; /* error */ |
1874 | else | |
1875 | return 0 ; /* end of file */ | |
1876 | } | |
16d20bd9 AD |
1877 | } |
1878 | return SvCUR(buf_sv); | |
1879 | } | |
1880 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1881 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1882 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1883 | "filter_read %d: skipped (filter deleted)\n", | |
1884 | idx)); | |
16d20bd9 AD |
1885 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1886 | } | |
1887 | /* Get function pointer hidden within datasv */ | |
1888 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1889 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1890 | "filter_read %d: via function %p (%s)\n", | |
1891 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1892 | /* Call function. The function is expected to */ |
1893 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1894 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1895 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1896 | } |
1897 | ||
76e3520e | 1898 | STATIC char * |
cea2e8a9 | 1899 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1900 | { |
c39cd008 | 1901 | #ifdef PERL_CR_FILTER |
3280af22 | 1902 | if (!PL_rsfp_filters) { |
c39cd008 | 1903 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1904 | } |
1905 | #endif | |
3280af22 | 1906 | if (PL_rsfp_filters) { |
16d20bd9 | 1907 | |
55497cff | 1908 | if (!append) |
1909 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1910 | if (FILTER_READ(0, sv, 0) > 0) |
1911 | return ( SvPVX(sv) ) ; | |
1912 | else | |
1913 | return Nullch ; | |
1914 | } | |
9d116dd7 | 1915 | else |
fd049845 | 1916 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1917 | } |
1918 | ||
1919 | ||
748a9306 LW |
1920 | #ifdef DEBUGGING |
1921 | static char* exp_name[] = | |
09bef843 SB |
1922 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1923 | "ATTRTERM", "TERMBLOCK" | |
1924 | }; | |
748a9306 | 1925 | #endif |
463ee0b2 | 1926 | |
02aa26ce NT |
1927 | /* |
1928 | yylex | |
1929 | ||
1930 | Works out what to call the token just pulled out of the input | |
1931 | stream. The yacc parser takes care of taking the ops we return and | |
1932 | stitching them into a tree. | |
1933 | ||
1934 | Returns: | |
1935 | PRIVATEREF | |
1936 | ||
1937 | Structure: | |
1938 | if read an identifier | |
1939 | if we're in a my declaration | |
1940 | croak if they tried to say my($foo::bar) | |
1941 | build the ops for a my() declaration | |
1942 | if it's an access to a my() variable | |
1943 | are we in a sort block? | |
1944 | croak if my($a); $a <=> $b | |
1945 | build ops for access to a my() variable | |
1946 | if in a dq string, and they've said @foo and we can't find @foo | |
1947 | croak | |
1948 | build ops for a bareword | |
1949 | if we already built the token before, use it. | |
1950 | */ | |
1951 | ||
864dbfa3 GS |
1952 | int |
1953 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 1954 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 1955 | #else |
cea2e8a9 | 1956 | Perl_yylex(pTHX) |
864dbfa3 | 1957 | #endif |
378cc40b | 1958 | { |
11343788 | 1959 | dTHR; |
79072805 | 1960 | register char *s; |
378cc40b | 1961 | register char *d; |
79072805 | 1962 | register I32 tmp; |
463ee0b2 | 1963 | STRLEN len; |
161b471a NIS |
1964 | GV *gv = Nullgv; |
1965 | GV **gvp = 0; | |
a687059c | 1966 | |
a1a0e61e TD |
1967 | #ifdef USE_PURE_BISON |
1968 | yylval_pointer = lvalp; | |
1969 | yychar_pointer = lcharp; | |
1970 | #endif | |
1971 | ||
02aa26ce | 1972 | /* check if there's an identifier for us to look at */ |
3280af22 | 1973 | if (PL_pending_ident) { |
02aa26ce | 1974 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1975 | char pit = PL_pending_ident; |
1976 | PL_pending_ident = 0; | |
bbce6d69 | 1977 | |
02aa26ce NT |
1978 | /* if we're in a my(), we can't allow dynamics here. |
1979 | $foo'bar has already been turned into $foo::bar, so | |
1980 | just check for colons. | |
1981 | ||
1982 | if it's a legal name, the OP is a PADANY. | |
1983 | */ | |
3280af22 | 1984 | if (PL_in_my) { |
77ca0c92 | 1985 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1ec3e8de GS |
1986 | if (strchr(PL_tokenbuf,':')) |
1987 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
1988 | "variable %s in \"our\"", | |
1989 | PL_tokenbuf)); | |
77ca0c92 LW |
1990 | tmp = pad_allocmy(PL_tokenbuf); |
1991 | } | |
1992 | else { | |
1993 | if (strchr(PL_tokenbuf,':')) | |
1994 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 1995 | |
77ca0c92 LW |
1996 | yylval.opval = newOP(OP_PADANY, 0); |
1997 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
1998 | return PRIVATEREF; | |
1999 | } | |
bbce6d69 | 2000 | } |
2001 | ||
02aa26ce NT |
2002 | /* |
2003 | build the ops for accesses to a my() variable. | |
2004 | ||
2005 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
2006 | then used in a comparison. This catches most, but not | |
2007 | all cases. For instance, it catches | |
2008 | sort { my($a); $a <=> $b } | |
2009 | but not | |
2010 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2011 | (although why you'd do that is anyone's guess). | |
2012 | */ | |
2013 | ||
3280af22 | 2014 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2015 | #ifdef USE_THREADS |
54b9620d | 2016 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2017 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2018 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2019 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2020 | { |
2faa37cc | 2021 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2022 | yylval.opval->op_targ = tmp; |
2023 | return PRIVATEREF; | |
2024 | } | |
2025 | #endif /* USE_THREADS */ | |
3280af22 | 2026 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
f472eb5c | 2027 | SV *namesv = AvARRAY(PL_comppad_name)[tmp]; |
77ca0c92 | 2028 | /* might be an "our" variable" */ |
f472eb5c | 2029 | if (SvFLAGS(namesv) & SVpad_OUR) { |
77ca0c92 | 2030 | /* build ops for a bareword */ |
f472eb5c GS |
2031 | SV *sym = newSVpv(HvNAME(GvSTASH(namesv)),0); |
2032 | sv_catpvn(sym, "::", 2); | |
2033 | sv_catpv(sym, PL_tokenbuf+1); | |
2034 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
77ca0c92 | 2035 | yylval.opval->op_private = OPpCONST_ENTERED; |
f472eb5c | 2036 | gv_fetchpv(SvPVX(sym), |
77ca0c92 | 2037 | (PL_in_eval |
f472eb5c GS |
2038 | ? (GV_ADDMULTI | GV_ADDINEVAL) |
2039 | : TRUE | |
77ca0c92 LW |
2040 | ), |
2041 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2042 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2043 | : SVt_PVHV)); | |
2044 | return WORD; | |
2045 | } | |
2046 | ||
02aa26ce | 2047 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2048 | if (PL_last_lop_op == OP_SORT && |
2049 | PL_tokenbuf[0] == '$' && | |
2050 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2051 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2052 | { |
3280af22 NIS |
2053 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2054 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2055 | d++) |
2056 | { | |
2057 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2058 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2059 | PL_tokenbuf); |
a863c7d1 | 2060 | } |
bbce6d69 | 2061 | } |
2062 | } | |
bbce6d69 | 2063 | |
a863c7d1 MB |
2064 | yylval.opval = newOP(OP_PADANY, 0); |
2065 | yylval.opval->op_targ = tmp; | |
2066 | return PRIVATEREF; | |
2067 | } | |
bbce6d69 | 2068 | } |
2069 | ||
02aa26ce NT |
2070 | /* |
2071 | Whine if they've said @foo in a doublequoted string, | |
2072 | and @foo isn't a variable we can find in the symbol | |
2073 | table. | |
2074 | */ | |
3280af22 NIS |
2075 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2076 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2077 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2078 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2079 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2080 | } |
2081 | ||
02aa26ce | 2082 | /* build ops for a bareword */ |
3280af22 | 2083 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2084 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2085 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2086 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2087 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2088 | : SVt_PVHV)); |
2089 | return WORD; | |
2090 | } | |
2091 | ||
02aa26ce NT |
2092 | /* no identifier pending identification */ |
2093 | ||
3280af22 | 2094 | switch (PL_lex_state) { |
79072805 LW |
2095 | #ifdef COMMENTARY |
2096 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2097 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2098 | break; | |
2099 | #endif | |
2100 | ||
09bef843 | 2101 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2102 | case LEX_KNOWNEXT: |
3280af22 NIS |
2103 | PL_nexttoke--; |
2104 | yylval = PL_nextval[PL_nexttoke]; | |
2105 | if (!PL_nexttoke) { | |
2106 | PL_lex_state = PL_lex_defer; | |
2107 | PL_expect = PL_lex_expect; | |
2108 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2109 | } |
3280af22 | 2110 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2111 | |
02aa26ce | 2112 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2113 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2114 | */ |
79072805 LW |
2115 | case LEX_INTERPCASEMOD: |
2116 | #ifdef DEBUGGING | |
3280af22 | 2117 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2118 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2119 | #endif |
02aa26ce | 2120 | /* handle \E or end of string */ |
3280af22 | 2121 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2122 | char oldmod; |
02aa26ce NT |
2123 | |
2124 | /* if at a \E */ | |
3280af22 NIS |
2125 | if (PL_lex_casemods) { |
2126 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2127 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2128 | |
3280af22 NIS |
2129 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2130 | PL_bufptr += 2; | |
2131 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2132 | } |
79072805 LW |
2133 | return ')'; |
2134 | } | |
3280af22 NIS |
2135 | if (PL_bufptr != PL_bufend) |
2136 | PL_bufptr += 2; | |
2137 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2138 | return yylex(); |
79072805 LW |
2139 | } |
2140 | else { | |
3280af22 | 2141 | s = PL_bufptr + 1; |
79072805 LW |
2142 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2143 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2144 | if (strchr("LU", *s) && |
3280af22 | 2145 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2146 | { |
3280af22 | 2147 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2148 | return ')'; |
2149 | } | |
3280af22 NIS |
2150 | if (PL_lex_casemods > 10) { |
2151 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2152 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2153 | SAVEFREEPV(newlb); |
3280af22 | 2154 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2155 | } |
2156 | } | |
3280af22 NIS |
2157 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2158 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2159 | PL_lex_state = LEX_INTERPCONCAT; | |
2160 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2161 | force_next('('); |
2162 | if (*s == 'l') | |
3280af22 | 2163 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2164 | else if (*s == 'u') |
3280af22 | 2165 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2166 | else if (*s == 'L') |
3280af22 | 2167 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2168 | else if (*s == 'U') |
3280af22 | 2169 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2170 | else if (*s == 'Q') |
3280af22 | 2171 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2172 | else |
cea2e8a9 | 2173 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2174 | PL_bufptr = s + 1; |
79072805 | 2175 | force_next(FUNC); |
3280af22 NIS |
2176 | if (PL_lex_starts) { |
2177 | s = PL_bufptr; | |
2178 | PL_lex_starts = 0; | |
79072805 LW |
2179 | Aop(OP_CONCAT); |
2180 | } | |
2181 | else | |
cea2e8a9 | 2182 | return yylex(); |
79072805 LW |
2183 | } |
2184 | ||
55497cff | 2185 | case LEX_INTERPPUSH: |
2186 | return sublex_push(); | |
2187 | ||
79072805 | 2188 | case LEX_INTERPSTART: |
3280af22 | 2189 | if (PL_bufptr == PL_bufend) |
79072805 | 2190 | return sublex_done(); |
3280af22 NIS |
2191 | PL_expect = XTERM; |
2192 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2193 | PL_lex_state = LEX_INTERPNORMAL; | |
2194 | if (PL_lex_dojoin) { | |
2195 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2196 | force_next(','); |
554b3eca | 2197 | #ifdef USE_THREADS |
533c011a NIS |
2198 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2199 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2200 | force_next(PRIVATEREF); |
2201 | #else | |
a0d0e21e | 2202 | force_ident("\"", '$'); |
554b3eca | 2203 | #endif /* USE_THREADS */ |
3280af22 | 2204 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2205 | force_next('$'); |
3280af22 | 2206 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2207 | force_next('('); |
3280af22 | 2208 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2209 | force_next(FUNC); |
2210 | } | |
3280af22 NIS |
2211 | if (PL_lex_starts++) { |
2212 | s = PL_bufptr; | |
79072805 LW |
2213 | Aop(OP_CONCAT); |
2214 | } | |
cea2e8a9 | 2215 | return yylex(); |
79072805 LW |
2216 | |
2217 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2218 | if (intuit_more(PL_bufptr)) { |
2219 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2220 | break; |
2221 | } | |
2222 | /* FALL THROUGH */ | |
2223 | ||
2224 | case LEX_INTERPEND: | |
3280af22 NIS |
2225 | if (PL_lex_dojoin) { |
2226 | PL_lex_dojoin = FALSE; | |
2227 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2228 | return ')'; |
2229 | } | |
43a16006 | 2230 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2231 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2232 | { |
e9fa98b2 | 2233 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2234 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2235 | PL_lex_repl = Nullsv; |
2236 | } | |
79072805 LW |
2237 | /* FALLTHROUGH */ |
2238 | case LEX_INTERPCONCAT: | |
2239 | #ifdef DEBUGGING | |
3280af22 | 2240 | if (PL_lex_brackets) |
cea2e8a9 | 2241 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2242 | #endif |
3280af22 | 2243 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2244 | return sublex_done(); |
2245 | ||
3280af22 NIS |
2246 | if (SvIVX(PL_linestr) == '\'') { |
2247 | SV *sv = newSVsv(PL_linestr); | |
2248 | if (!PL_lex_inpat) | |
76e3520e | 2249 | sv = tokeq(sv); |
3280af22 | 2250 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2251 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2252 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2253 | s = PL_bufend; |
79072805 LW |
2254 | } |
2255 | else { | |
3280af22 | 2256 | s = scan_const(PL_bufptr); |
79072805 | 2257 | if (*s == '\\') |
3280af22 | 2258 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2259 | else |
3280af22 | 2260 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2261 | } |
2262 | ||
3280af22 NIS |
2263 | if (s != PL_bufptr) { |
2264 | PL_nextval[PL_nexttoke] = yylval; | |
2265 | PL_expect = XTERM; | |
79072805 | 2266 | force_next(THING); |
3280af22 | 2267 | if (PL_lex_starts++) |
79072805 LW |
2268 | Aop(OP_CONCAT); |
2269 | else { | |
3280af22 | 2270 | PL_bufptr = s; |
cea2e8a9 | 2271 | return yylex(); |
79072805 LW |
2272 | } |
2273 | } | |
2274 | ||
cea2e8a9 | 2275 | return yylex(); |
a0d0e21e | 2276 | case LEX_FORMLINE: |
3280af22 NIS |
2277 | PL_lex_state = LEX_NORMAL; |
2278 | s = scan_formline(PL_bufptr); | |
2279 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2280 | goto rightbracket; |
2281 | OPERATOR(';'); | |
79072805 LW |
2282 | } |
2283 | ||
3280af22 NIS |
2284 | s = PL_bufptr; |
2285 | PL_oldoldbufptr = PL_oldbufptr; | |
2286 | PL_oldbufptr = s; | |
79072805 | 2287 | DEBUG_p( { |
bf49b057 GS |
2288 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2289 | exp_name[PL_expect], s); | |
79072805 | 2290 | } ) |
463ee0b2 LW |
2291 | |
2292 | retry: | |
378cc40b LW |
2293 | switch (*s) { |
2294 | default: | |
7e2040f0 | 2295 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2296 | goto keylookup; |
cea2e8a9 | 2297 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2298 | case 4: |
2299 | case 26: | |
2300 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2301 | case 0: |
3280af22 NIS |
2302 | if (!PL_rsfp) { |
2303 | PL_last_uni = 0; | |
2304 | PL_last_lop = 0; | |
2305 | if (PL_lex_brackets) | |
d98d5fff | 2306 | yyerror("Missing right curly or square bracket"); |
79072805 | 2307 | TOKEN(0); |
463ee0b2 | 2308 | } |
3280af22 | 2309 | if (s++ < PL_bufend) |
a687059c | 2310 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2311 | PL_last_uni = 0; |
2312 | PL_last_lop = 0; | |
2313 | if (!PL_in_eval && !PL_preambled) { | |
2314 | PL_preambled = TRUE; | |
2315 | sv_setpv(PL_linestr,incl_perldb()); | |
2316 | if (SvCUR(PL_linestr)) | |
2317 | sv_catpv(PL_linestr,";"); | |
2318 | if (PL_preambleav){ | |
2319 | while(AvFILLp(PL_preambleav) >= 0) { | |
2320 | SV *tmpsv = av_shift(PL_preambleav); | |
2321 | sv_catsv(PL_linestr, tmpsv); | |
2322 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2323 | sv_free(tmpsv); |
2324 | } | |
3280af22 NIS |
2325 | sv_free((SV*)PL_preambleav); |
2326 | PL_preambleav = NULL; | |
91b7def8 | 2327 | } |
3280af22 NIS |
2328 | if (PL_minus_n || PL_minus_p) { |
2329 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2330 | if (PL_minus_l) | |
2331 | sv_catpv(PL_linestr,"chomp;"); | |
2332 | if (PL_minus_a) { | |
8fd239a7 CS |
2333 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2334 | if (gv) | |
2335 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2336 | if (PL_minus_F) { |
2337 | if (strchr("/'\"", *PL_splitstr) | |
2338 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2339 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2340 | else { |
2341 | char delim; | |
2342 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2343 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2344 | delim = *s; |
cea2e8a9 | 2345 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2346 | "q" + (delim == '\''), delim); |
3280af22 | 2347 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2348 | if (*s == '\\') |
3280af22 NIS |
2349 | sv_catpvn(PL_linestr, "\\", 1); |
2350 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2351 | } |
cea2e8a9 | 2352 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2353 | } |
2304df62 AD |
2354 | } |
2355 | else | |
3280af22 | 2356 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2357 | } |
79072805 | 2358 | } |
3280af22 NIS |
2359 | sv_catpv(PL_linestr, "\n"); |
2360 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2361 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2362 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2363 | SV *sv = NEWSV(85,0); |
2364 | ||
2365 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2366 | sv_setsv(sv,PL_linestr); |
57843af0 | 2367 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2368 | } |
79072805 | 2369 | goto retry; |
a687059c | 2370 | } |
e929a76b | 2371 | do { |
3280af22 | 2372 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2373 | fake_eof: |
3280af22 NIS |
2374 | if (PL_rsfp) { |
2375 | if (PL_preprocess && !PL_in_eval) | |
2376 | (void)PerlProc_pclose(PL_rsfp); | |
2377 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2378 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2379 | else |
3280af22 NIS |
2380 | (void)PerlIO_close(PL_rsfp); |
2381 | PL_rsfp = Nullfp; | |
4a9ae47a | 2382 | PL_doextract = FALSE; |
395c3793 | 2383 | } |
3280af22 NIS |
2384 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2385 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2386 | sv_catpv(PL_linestr,";}"); | |
2387 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2388 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2389 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2390 | goto retry; |
2391 | } | |
3280af22 NIS |
2392 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2393 | sv_setpv(PL_linestr,""); | |
79072805 | 2394 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2395 | } |
3280af22 | 2396 | if (PL_doextract) { |
a0d0e21e | 2397 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2398 | PL_doextract = FALSE; |
a0d0e21e LW |
2399 | |
2400 | /* Incest with pod. */ | |
2401 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2402 | sv_setpv(PL_linestr, ""); |
2403 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2404 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2405 | PL_doextract = FALSE; | |
a0d0e21e LW |
2406 | } |
2407 | } | |
463ee0b2 | 2408 | incline(s); |
3280af22 NIS |
2409 | } while (PL_doextract); |
2410 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2411 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2412 | SV *sv = NEWSV(85,0); |
a687059c | 2413 | |
93a17b20 | 2414 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2415 | sv_setsv(sv,PL_linestr); |
57843af0 | 2416 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2417 | } |
3280af22 | 2418 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2419 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2420 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2421 | s++; |
a0d0e21e | 2422 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2423 | s++; |
44a8e56a | 2424 | d = Nullch; |
3280af22 | 2425 | if (!PL_in_eval) { |
44a8e56a | 2426 | if (*s == '#' && *(s+1) == '!') |
2427 | d = s + 2; | |
2428 | #ifdef ALTERNATE_SHEBANG | |
2429 | else { | |
2430 | static char as[] = ALTERNATE_SHEBANG; | |
2431 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2432 | d = s + (sizeof(as) - 1); | |
2433 | } | |
2434 | #endif /* ALTERNATE_SHEBANG */ | |
2435 | } | |
2436 | if (d) { | |
b8378b72 | 2437 | char *ipath; |
774d564b | 2438 | char *ipathend; |
b8378b72 | 2439 | |
774d564b | 2440 | while (isSPACE(*d)) |
b8378b72 CS |
2441 | d++; |
2442 | ipath = d; | |
774d564b | 2443 | while (*d && !isSPACE(*d)) |
2444 | d++; | |
2445 | ipathend = d; | |
2446 | ||
2447 | #ifdef ARG_ZERO_IS_SCRIPT | |
2448 | if (ipathend > ipath) { | |
2449 | /* | |
2450 | * HP-UX (at least) sets argv[0] to the script name, | |
2451 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2452 | * at least, set argv[0] to the basename of the Perl | |
2453 | * interpreter. So, having found "#!", we'll set it right. | |
2454 | */ | |
2455 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2456 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2457 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2458 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2459 | SvSETMAGIC(x); |
2460 | } | |
774d564b | 2461 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2462 | } |
774d564b | 2463 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2464 | |
2465 | /* | |
2466 | * Look for options. | |
2467 | */ | |
748a9306 | 2468 | d = instr(s,"perl -"); |
84e30d1a | 2469 | if (!d) { |
748a9306 | 2470 | d = instr(s,"perl"); |
84e30d1a GS |
2471 | #if defined(DOSISH) |
2472 | /* avoid getting into infinite loops when shebang | |
2473 | * line contains "Perl" rather than "perl" */ | |
2474 | if (!d) { | |
2475 | for (d = ipathend-4; d >= ipath; --d) { | |
2476 | if ((*d == 'p' || *d == 'P') | |
2477 | && !ibcmp(d, "perl", 4)) | |
2478 | { | |
2479 | break; | |
2480 | } | |
2481 | } | |
2482 | if (d < ipath) | |
2483 | d = Nullch; | |
2484 | } | |
2485 | #endif | |
2486 | } | |
44a8e56a | 2487 | #ifdef ALTERNATE_SHEBANG |
2488 | /* | |
2489 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2490 | * character that can be part of a Perl expression, then if | |
2491 | * we see it but not "perl", we're probably looking at the | |
2492 | * start of Perl code, not a request to hand off to some | |
2493 | * other interpreter. Similarly, if "perl" is there, but | |
2494 | * not in the first 'word' of the line, we assume the line | |
2495 | * contains the start of the Perl program. | |
44a8e56a | 2496 | */ |
2497 | if (d && *s != '#') { | |
774d564b | 2498 | char *c = ipath; |
44a8e56a | 2499 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2500 | c++; | |
2501 | if (c < d) | |
2502 | d = Nullch; /* "perl" not in first word; ignore */ | |
2503 | else | |
2504 | *s = '#'; /* Don't try to parse shebang line */ | |
2505 | } | |
774d564b | 2506 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2507 | if (!d && |
44a8e56a | 2508 | *s == '#' && |
774d564b | 2509 | ipathend > ipath && |
3280af22 | 2510 | !PL_minus_c && |
748a9306 | 2511 | !instr(s,"indir") && |
3280af22 | 2512 | instr(PL_origargv[0],"perl")) |
748a9306 | 2513 | { |
9f68db38 | 2514 | char **newargv; |
9f68db38 | 2515 | |
774d564b | 2516 | *ipathend = '\0'; |
2517 | s = ipathend + 1; | |
3280af22 | 2518 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2519 | s++; |
3280af22 NIS |
2520 | if (s < PL_bufend) { |
2521 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2522 | newargv[1] = s; |
3280af22 | 2523 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2524 | s++; |
2525 | *s = '\0'; | |
3280af22 | 2526 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2527 | } |
2528 | else | |
3280af22 | 2529 | newargv = PL_origargv; |
774d564b | 2530 | newargv[0] = ipath; |
80252599 | 2531 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2532 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2533 | } |
748a9306 | 2534 | if (d) { |
3280af22 NIS |
2535 | U32 oldpdb = PL_perldb; |
2536 | bool oldn = PL_minus_n; | |
2537 | bool oldp = PL_minus_p; | |
748a9306 LW |
2538 | |
2539 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2540 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2541 | |
2542 | if (*d++ == '-') { | |
8cc95fdb | 2543 | do { |
2544 | if (*d == 'M' || *d == 'm') { | |
2545 | char *m = d; | |
2546 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2547 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2548 | (int)(d - m), m); |
2549 | } | |
2550 | d = moreswitches(d); | |
2551 | } while (d); | |
84902520 | 2552 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2553 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2554 | /* if we have already added "LINE: while (<>) {", |
2555 | we must not do it again */ | |
748a9306 | 2556 | { |
3280af22 NIS |
2557 | sv_setpv(PL_linestr, ""); |
2558 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2559 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2560 | PL_preambled = FALSE; | |
84902520 | 2561 | if (PERLDB_LINE) |
3280af22 | 2562 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2563 | goto retry; |
2564 | } | |
a0d0e21e | 2565 | } |
79072805 | 2566 | } |
9f68db38 | 2567 | } |
79072805 | 2568 | } |
3280af22 NIS |
2569 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2570 | PL_bufptr = s; | |
2571 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2572 | return yylex(); |
ae986130 | 2573 | } |
378cc40b | 2574 | goto retry; |
4fdae800 | 2575 | case '\r': |
6a27c188 | 2576 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2577 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2578 | Perl_croak(aTHX_ | |
54310121 | 2579 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2580 | #endif |
4fdae800 | 2581 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2582 | s++; |
2583 | goto retry; | |
378cc40b | 2584 | case '#': |
e929a76b | 2585 | case '\n': |
3280af22 NIS |
2586 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2587 | d = PL_bufend; | |
a687059c | 2588 | while (s < d && *s != '\n') |
378cc40b | 2589 | s++; |
0f85fab0 | 2590 | if (s < d) |
378cc40b | 2591 | s++; |
463ee0b2 | 2592 | incline(s); |
3280af22 NIS |
2593 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2594 | PL_bufptr = s; | |
2595 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2596 | return yylex(); |
a687059c | 2597 | } |
378cc40b | 2598 | } |
a687059c | 2599 | else { |
378cc40b | 2600 | *s = '\0'; |
3280af22 | 2601 | PL_bufend = s; |
a687059c | 2602 | } |
378cc40b LW |
2603 | goto retry; |
2604 | case '-': | |
79072805 | 2605 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2606 | s++; |
3280af22 | 2607 | PL_bufptr = s; |
748a9306 LW |
2608 | tmp = *s++; |
2609 | ||
3280af22 | 2610 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2611 | s++; |
2612 | ||
2613 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2614 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2615 | OPERATOR('-'); /* unary minus */ |
2616 | } | |
3280af22 NIS |
2617 | PL_last_uni = PL_oldbufptr; |
2618 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2619 | switch (tmp) { |
79072805 LW |
2620 | case 'r': FTST(OP_FTEREAD); |
2621 | case 'w': FTST(OP_FTEWRITE); | |
2622 | case 'x': FTST(OP_FTEEXEC); | |
2623 | case 'o': FTST(OP_FTEOWNED); | |
2624 | case 'R': FTST(OP_FTRREAD); | |
2625 | case 'W': FTST(OP_FTRWRITE); | |
2626 | case 'X': FTST(OP_FTREXEC); | |
2627 | case 'O': FTST(OP_FTROWNED); | |
2628 | case 'e': FTST(OP_FTIS); | |
2629 | case 'z': FTST(OP_FTZERO); | |
2630 | case 's': FTST(OP_FTSIZE); | |
2631 | case 'f': FTST(OP_FTFILE); | |
2632 | case 'd': FTST(OP_FTDIR); | |
2633 | case 'l': FTST(OP_FTLINK); | |
2634 | case 'p': FTST(OP_FTPIPE); | |
2635 | case 'S': FTST(OP_FTSOCK); | |
2636 | case 'u': FTST(OP_FTSUID); | |
2637 | case 'g': FTST(OP_FTSGID); | |
2638 | case 'k': FTST(OP_FTSVTX); | |
2639 | case 'b': FTST(OP_FTBLK); | |
2640 | case 'c': FTST(OP_FTCHR); | |
2641 | case 't': FTST(OP_FTTTY); | |
2642 | case 'T': FTST(OP_FTTEXT); | |
2643 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2644 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2645 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2646 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2647 | default: |
cea2e8a9 | 2648 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2649 | break; |
2650 | } | |
2651 | } | |
a687059c LW |
2652 | tmp = *s++; |
2653 | if (*s == tmp) { | |
2654 | s++; | |
3280af22 | 2655 | if (PL_expect == XOPERATOR) |
79072805 LW |
2656 | TERM(POSTDEC); |
2657 | else | |
2658 | OPERATOR(PREDEC); | |
2659 | } | |
2660 | else if (*s == '>') { | |
2661 | s++; | |
2662 | s = skipspace(s); | |
7e2040f0 | 2663 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 2664 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2665 | TOKEN(ARROW); |
79072805 | 2666 | } |
748a9306 LW |
2667 | else if (*s == '$') |
2668 | OPERATOR(ARROW); | |
463ee0b2 | 2669 | else |
748a9306 | 2670 | TERM(ARROW); |
a687059c | 2671 | } |
3280af22 | 2672 | if (PL_expect == XOPERATOR) |
79072805 LW |
2673 | Aop(OP_SUBTRACT); |
2674 | else { | |
3280af22 | 2675 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2676 | check_uni(); |
79072805 | 2677 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2678 | } |
79072805 | 2679 | |
378cc40b | 2680 | case '+': |
a687059c LW |
2681 | tmp = *s++; |
2682 | if (*s == tmp) { | |
378cc40b | 2683 | s++; |
3280af22 | 2684 | if (PL_expect == XOPERATOR) |
79072805 LW |
2685 | TERM(POSTINC); |
2686 | else | |
2687 | OPERATOR(PREINC); | |
378cc40b | 2688 | } |
3280af22 | 2689 | if (PL_expect == XOPERATOR) |
79072805 LW |
2690 | Aop(OP_ADD); |
2691 | else { | |
3280af22 | 2692 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2693 | check_uni(); |
a687059c | 2694 | OPERATOR('+'); |
2f3197b3 | 2695 | } |
a687059c | 2696 | |
378cc40b | 2697 | case '*': |
3280af22 NIS |
2698 | if (PL_expect != XOPERATOR) { |
2699 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2700 | PL_expect = XOPERATOR; | |
2701 | force_ident(PL_tokenbuf, '*'); | |
2702 | if (!*PL_tokenbuf) | |
a0d0e21e | 2703 | PREREF('*'); |
79072805 | 2704 | TERM('*'); |
a687059c | 2705 | } |
79072805 LW |
2706 | s++; |
2707 | if (*s == '*') { | |
a687059c | 2708 | s++; |
79072805 | 2709 | PWop(OP_POW); |
a687059c | 2710 | } |
79072805 LW |
2711 | Mop(OP_MULTIPLY); |
2712 | ||
378cc40b | 2713 | case '%': |
3280af22 | 2714 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2715 | ++s; |
2716 | Mop(OP_MODULO); | |
a687059c | 2717 | } |
3280af22 NIS |
2718 | PL_tokenbuf[0] = '%'; |
2719 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2720 | if (!PL_tokenbuf[1]) { | |
2721 | if (s == PL_bufend) | |
bbce6d69 | 2722 | yyerror("Final % should be \\% or %name"); |
2723 | PREREF('%'); | |
a687059c | 2724 | } |
3280af22 | 2725 | PL_pending_ident = '%'; |
bbce6d69 | 2726 | TERM('%'); |
a687059c | 2727 | |
378cc40b | 2728 | case '^': |
79072805 | 2729 | s++; |
a0d0e21e | 2730 | BOop(OP_BIT_XOR); |
79072805 | 2731 | case '[': |
3280af22 | 2732 | PL_lex_brackets++; |
79072805 | 2733 | /* FALL THROUGH */ |
378cc40b | 2734 | case '~': |
378cc40b | 2735 | case ',': |
378cc40b LW |
2736 | tmp = *s++; |
2737 | OPERATOR(tmp); | |
a0d0e21e LW |
2738 | case ':': |
2739 | if (s[1] == ':') { | |
2740 | len = 0; | |
2741 | goto just_a_word; | |
2742 | } | |
2743 | s++; | |
09bef843 SB |
2744 | switch (PL_expect) { |
2745 | OP *attrs; | |
2746 | case XOPERATOR: | |
2747 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2748 | break; | |
2749 | PL_bufptr = s; /* update in case we back off */ | |
2750 | goto grabattrs; | |
2751 | case XATTRBLOCK: | |
2752 | PL_expect = XBLOCK; | |
2753 | goto grabattrs; | |
2754 | case XATTRTERM: | |
2755 | PL_expect = XTERMBLOCK; | |
2756 | grabattrs: | |
2757 | s = skipspace(s); | |
2758 | attrs = Nullop; | |
7e2040f0 | 2759 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 2760 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
2761 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
2762 | if (tmp < 0) tmp = -tmp; | |
2763 | switch (tmp) { | |
2764 | case KEY_or: | |
2765 | case KEY_and: | |
2766 | case KEY_for: | |
2767 | case KEY_unless: | |
2768 | case KEY_if: | |
2769 | case KEY_while: | |
2770 | case KEY_until: | |
2771 | goto got_attrs; | |
2772 | default: | |
2773 | break; | |
2774 | } | |
2775 | } | |
09bef843 SB |
2776 | if (*d == '(') { |
2777 | d = scan_str(d,TRUE,TRUE); | |
2778 | if (!d) { | |
2779 | if (PL_lex_stuff) { | |
2780 | SvREFCNT_dec(PL_lex_stuff); | |
2781 | PL_lex_stuff = Nullsv; | |
2782 | } | |
2783 | /* MUST advance bufptr here to avoid bogus | |
2784 | "at end of line" context messages from yyerror(). | |
2785 | */ | |
2786 | PL_bufptr = s + len; | |
2787 | yyerror("Unterminated attribute parameter in attribute list"); | |
2788 | if (attrs) | |
2789 | op_free(attrs); | |
2790 | return 0; /* EOF indicator */ | |
2791 | } | |
2792 | } | |
2793 | if (PL_lex_stuff) { | |
2794 | SV *sv = newSVpvn(s, len); | |
2795 | sv_catsv(sv, PL_lex_stuff); | |
2796 | attrs = append_elem(OP_LIST, attrs, | |
2797 | newSVOP(OP_CONST, 0, sv)); | |
2798 | SvREFCNT_dec(PL_lex_stuff); | |
2799 | PL_lex_stuff = Nullsv; | |
2800 | } | |
2801 | else { | |
2802 | attrs = append_elem(OP_LIST, attrs, | |
2803 | newSVOP(OP_CONST, 0, | |
2804 | newSVpvn(s, len))); | |
2805 | } | |
2806 | s = skipspace(d); | |
0120eecf | 2807 | if (*s == ':' && s[1] != ':') |
09bef843 | 2808 | s = skipspace(s+1); |
0120eecf GS |
2809 | else if (s == d) |
2810 | break; /* require real whitespace or :'s */ | |
09bef843 | 2811 | } |
f9829d6b GS |
2812 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
2813 | if (*s != ';' && *s != tmp && (tmp != '=' || *s != ')')) { | |
09bef843 SB |
2814 | char q = ((*s == '\'') ? '"' : '\''); |
2815 | /* If here for an expression, and parsed no attrs, back off. */ | |
2816 | if (tmp == '=' && !attrs) { | |
2817 | s = PL_bufptr; | |
2818 | break; | |
2819 | } | |
2820 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2821 | context messages from yyerror(). | |
2822 | */ | |
2823 | PL_bufptr = s; | |
2824 | if (!*s) | |
2825 | yyerror("Unterminated attribute list"); | |
2826 | else | |
2827 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2828 | q, *s, q)); | |
2829 | if (attrs) | |
2830 | op_free(attrs); | |
2831 | OPERATOR(':'); | |
2832 | } | |
f9829d6b | 2833 | got_attrs: |
09bef843 SB |
2834 | if (attrs) { |
2835 | PL_nextval[PL_nexttoke].opval = attrs; | |
2836 | force_next(THING); | |
2837 | } | |
2838 | TOKEN(COLONATTR); | |
2839 | } | |
a0d0e21e | 2840 | OPERATOR(':'); |
8990e307 LW |
2841 | case '(': |
2842 | s++; | |
3280af22 NIS |
2843 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2844 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2845 | else |
3280af22 | 2846 | PL_expect = XTERM; |
a0d0e21e | 2847 | TOKEN('('); |
378cc40b | 2848 | case ';': |
57843af0 GS |
2849 | if (CopLINE(PL_curcop) < PL_copline) |
2850 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2851 | tmp = *s++; |
2852 | OPERATOR(tmp); | |
2853 | case ')': | |
378cc40b | 2854 | tmp = *s++; |
16d20bd9 AD |
2855 | s = skipspace(s); |
2856 | if (*s == '{') | |
2857 | PREBLOCK(tmp); | |
378cc40b | 2858 | TERM(tmp); |
79072805 LW |
2859 | case ']': |
2860 | s++; | |
3280af22 | 2861 | if (PL_lex_brackets <= 0) |
d98d5fff | 2862 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2863 | else |
3280af22 NIS |
2864 | --PL_lex_brackets; |
2865 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2866 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2867 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2868 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2869 | } |
2870 | } | |
4633a7c4 | 2871 | TERM(']'); |
79072805 LW |
2872 | case '{': |
2873 | leftbracket: | |
79072805 | 2874 | s++; |
3280af22 NIS |
2875 | if (PL_lex_brackets > 100) { |
2876 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2877 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2878 | SAVEFREEPV(newlb); |
3280af22 | 2879 | PL_lex_brackstack = newlb; |
8990e307 LW |
2880 | } |
2881 | } | |
3280af22 | 2882 | switch (PL_expect) { |
a0d0e21e | 2883 | case XTERM: |
3280af22 | 2884 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2885 | s--; |
2886 | PRETERMBLOCK(DO); | |
2887 | } | |
3280af22 NIS |
2888 | if (PL_oldoldbufptr == PL_last_lop) |
2889 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2890 | else |
3280af22 | 2891 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2892 | OPERATOR(HASHBRACK); |
a0d0e21e | 2893 | case XOPERATOR: |
3280af22 | 2894 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2895 | s++; |
44a8e56a | 2896 | d = s; |
3280af22 NIS |
2897 | PL_tokenbuf[0] = '\0'; |
2898 | if (d < PL_bufend && *d == '-') { | |
2899 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2900 | d++; |
3280af22 | 2901 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2902 | d++; |
2903 | } | |
7e2040f0 | 2904 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 2905 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2906 | FALSE, &len); |
3280af22 | 2907 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2908 | d++; |
2909 | if (*d == '}') { | |
3280af22 | 2910 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2911 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2912 | if (minus) | |
2913 | force_next('-'); | |
748a9306 LW |
2914 | } |
2915 | } | |
2916 | /* FALL THROUGH */ | |
09bef843 | 2917 | case XATTRBLOCK: |
748a9306 | 2918 | case XBLOCK: |
3280af22 NIS |
2919 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2920 | PL_expect = XSTATE; | |
a0d0e21e | 2921 | break; |
09bef843 | 2922 | case XATTRTERM: |
a0d0e21e | 2923 | case XTERMBLOCK: |
3280af22 NIS |
2924 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2925 | PL_expect = XSTATE; | |
a0d0e21e LW |
2926 | break; |
2927 | default: { | |
2928 | char *t; | |
3280af22 NIS |
2929 | if (PL_oldoldbufptr == PL_last_lop) |
2930 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2931 | else |
3280af22 | 2932 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2933 | s = skipspace(s); |
09ecc4b6 | 2934 | if (*s == '}') |
a0d0e21e | 2935 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2936 | /* This hack serves to disambiguate a pair of curlies |
2937 | * as being a block or an anon hash. Normally, expectation | |
2938 | * determines that, but in cases where we're not in a | |
2939 | * position to expect anything in particular (like inside | |
2940 | * eval"") we have to resolve the ambiguity. This code | |
2941 | * covers the case where the first term in the curlies is a | |
2942 | * quoted string. Most other cases need to be explicitly | |
2943 | * disambiguated by prepending a `+' before the opening | |
2944 | * curly in order to force resolution as an anon hash. | |
2945 | * | |
2946 | * XXX should probably propagate the outer expectation | |
2947 | * into eval"" to rely less on this hack, but that could | |
2948 | * potentially break current behavior of eval"". | |
2949 | * GSAR 97-07-21 | |
2950 | */ | |
2951 | t = s; | |
2952 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2953 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2954 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2955 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2956 | t++; | |
2957 | t++; | |
a0d0e21e | 2958 | } |
b8a4b1be | 2959 | else if (*s == 'q') { |
3280af22 | 2960 | if (++t < PL_bufend |
b8a4b1be | 2961 | && (!isALNUM(*t) |
3280af22 | 2962 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
2963 | && !isALNUM(*t)))) |
2964 | { | |
b8a4b1be GS |
2965 | char *tmps; |
2966 | char open, close, term; | |
2967 | I32 brackets = 1; | |
2968 | ||
3280af22 | 2969 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2970 | t++; |
2971 | term = *t; | |
2972 | open = term; | |
2973 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2974 | term = tmps[5]; | |
2975 | close = term; | |
2976 | if (open == close) | |
3280af22 NIS |
2977 | for (t++; t < PL_bufend; t++) { |
2978 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2979 | t++; |
6d07e5e9 | 2980 | else if (*t == open) |
b8a4b1be GS |
2981 | break; |
2982 | } | |
2983 | else | |
3280af22 NIS |
2984 | for (t++; t < PL_bufend; t++) { |
2985 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2986 | t++; |
6d07e5e9 | 2987 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2988 | break; |
2989 | else if (*t == open) | |
2990 | brackets++; | |
2991 | } | |
2992 | } | |
2993 | t++; | |
a0d0e21e | 2994 | } |
7e2040f0 | 2995 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 2996 | t += UTF8SKIP(t); |
7e2040f0 | 2997 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 2998 | t += UTF8SKIP(t); |
a0d0e21e | 2999 | } |
3280af22 | 3000 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3001 | t++; |
b8a4b1be GS |
3002 | /* if comma follows first term, call it an anon hash */ |
3003 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3004 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3005 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3006 | OPERATOR(HASHBRACK); |
3280af22 | 3007 | if (PL_expect == XREF) |
4e4e412b | 3008 | PL_expect = XTERM; |
a0d0e21e | 3009 | else { |
3280af22 NIS |
3010 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3011 | PL_expect = XSTATE; | |
a0d0e21e | 3012 | } |
8990e307 | 3013 | } |
a0d0e21e | 3014 | break; |
463ee0b2 | 3015 | } |
57843af0 | 3016 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3017 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3018 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3019 | TOKEN('{'); |
378cc40b | 3020 | case '}': |
79072805 LW |
3021 | rightbracket: |
3022 | s++; | |
3280af22 | 3023 | if (PL_lex_brackets <= 0) |
d98d5fff | 3024 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3025 | else |
3280af22 NIS |
3026 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
3027 | if (PL_lex_brackets < PL_lex_formbrack) | |
3028 | PL_lex_formbrack = 0; | |
3029 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3030 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3031 | if (PL_expect & XFAKEBRACK) { |
3032 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3033 | PL_lex_state = LEX_INTERPEND; |
3034 | PL_bufptr = s; | |
cea2e8a9 | 3035 | return yylex(); /* ignore fake brackets */ |
79072805 | 3036 | } |
fa83b5b6 | 3037 | if (*s == '-' && s[1] == '>') |
3280af22 | 3038 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3039 | else if (*s != '[' && *s != '{') |
3280af22 | 3040 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3041 | } |
3042 | } | |
9059aa12 LW |
3043 | if (PL_expect & XFAKEBRACK) { |
3044 | PL_expect &= XENUMMASK; | |
3280af22 | 3045 | PL_bufptr = s; |
cea2e8a9 | 3046 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3047 | } |
79072805 LW |
3048 | force_next('}'); |
3049 | TOKEN(';'); | |
378cc40b LW |
3050 | case '&': |
3051 | s++; | |
3052 | tmp = *s++; | |
3053 | if (tmp == '&') | |
a0d0e21e | 3054 | AOPERATOR(ANDAND); |
378cc40b | 3055 | s--; |
3280af22 | 3056 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3057 | if (ckWARN(WARN_SEMICOLON) |
3058 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3059 | { | |
57843af0 | 3060 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3061 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3062 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3063 | } |
79072805 | 3064 | BAop(OP_BIT_AND); |
463ee0b2 | 3065 | } |
79072805 | 3066 | |
3280af22 NIS |
3067 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3068 | if (*PL_tokenbuf) { | |
3069 | PL_expect = XOPERATOR; | |
3070 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3071 | } |
79072805 LW |
3072 | else |
3073 | PREREF('&'); | |
c07a80fd | 3074 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3075 | TERM('&'); |
3076 | ||
378cc40b LW |
3077 | case '|': |
3078 | s++; | |
3079 | tmp = *s++; | |
3080 | if (tmp == '|') | |
a0d0e21e | 3081 | AOPERATOR(OROR); |
378cc40b | 3082 | s--; |
79072805 | 3083 | BOop(OP_BIT_OR); |
378cc40b LW |
3084 | case '=': |
3085 | s++; | |
3086 | tmp = *s++; | |
3087 | if (tmp == '=') | |
79072805 LW |
3088 | Eop(OP_EQ); |
3089 | if (tmp == '>') | |
3090 | OPERATOR(','); | |
378cc40b | 3091 | if (tmp == '~') |
79072805 | 3092 | PMop(OP_MATCH); |
599cee73 | 3093 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3094 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3095 | s--; |
3280af22 NIS |
3096 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3097 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3098 | { |
3280af22 NIS |
3099 | if (PL_in_eval && !PL_rsfp) { |
3100 | d = PL_bufend; | |
a5f75d66 AD |
3101 | while (s < d) { |
3102 | if (*s++ == '\n') { | |
3103 | incline(s); | |
3104 | if (strnEQ(s,"=cut",4)) { | |
3105 | s = strchr(s,'\n'); | |
3106 | if (s) | |
3107 | s++; | |
3108 | else | |
3109 | s = d; | |
3110 | incline(s); | |
3111 | goto retry; | |
3112 | } | |
3113 | } | |
3114 | } | |
3115 | goto retry; | |
3116 | } | |
3280af22 NIS |
3117 | s = PL_bufend; |
3118 | PL_doextract = TRUE; | |
a0d0e21e LW |
3119 | goto retry; |
3120 | } | |
3280af22 | 3121 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3122 | char *t; |
51882d45 | 3123 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3124 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3125 | #else |
3126 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3127 | #endif | |
a0d0e21e LW |
3128 | if (*t == '\n' || *t == '#') { |
3129 | s--; | |
3280af22 | 3130 | PL_expect = XBLOCK; |
a0d0e21e LW |
3131 | goto leftbracket; |
3132 | } | |
79072805 | 3133 | } |
a0d0e21e LW |
3134 | yylval.ival = 0; |
3135 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3136 | case '!': |
3137 | s++; | |
3138 | tmp = *s++; | |
3139 | if (tmp == '=') | |
79072805 | 3140 | Eop(OP_NE); |
378cc40b | 3141 | if (tmp == '~') |
79072805 | 3142 | PMop(OP_NOT); |
378cc40b LW |
3143 | s--; |
3144 | OPERATOR('!'); | |
3145 | case '<': | |
3280af22 | 3146 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3147 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3148 | check_uni(); |
79072805 LW |
3149 | if (s[1] == '<') |
3150 | s = scan_heredoc(s); | |
3151 | else | |
3152 | s = scan_inputsymbol(s); | |
3153 | TERM(sublex_start()); | |
378cc40b LW |
3154 | } |
3155 | s++; | |
3156 | tmp = *s++; | |
3157 | if (tmp == '<') | |
79072805 | 3158 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3159 | if (tmp == '=') { |
3160 | tmp = *s++; | |
3161 | if (tmp == '>') | |
79072805 | 3162 | Eop(OP_NCMP); |
395c3793 | 3163 | s--; |
79072805 | 3164 | Rop(OP_LE); |
395c3793 | 3165 | } |
378cc40b | 3166 | s--; |
79072805 | 3167 | Rop(OP_LT); |
378cc40b LW |
3168 | case '>': |
3169 | s++; | |
3170 | tmp = *s++; | |
3171 | if (tmp == '>') | |
79072805 | 3172 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3173 | if (tmp == '=') |
79072805 | 3174 | Rop(OP_GE); |
378cc40b | 3175 | s--; |
79072805 | 3176 | Rop(OP_GT); |
378cc40b LW |
3177 | |
3178 | case '$': | |
bbce6d69 | 3179 | CLINE; |
3180 | ||
3280af22 NIS |
3181 | if (PL_expect == XOPERATOR) { |
3182 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3183 | PL_expect = XTERM; | |
a0d0e21e | 3184 | depcom(); |
bbce6d69 | 3185 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3186 | } |
8990e307 | 3187 | } |
a0d0e21e | 3188 | |
7e2040f0 | 3189 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3190 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3191 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3192 | sizeof PL_tokenbuf - 1, FALSE); | |
3193 | if (PL_expect == XOPERATOR) | |
3194 | no_op("Array length", s); | |
3280af22 | 3195 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3196 | PREREF(DOLSHARP); |
3280af22 NIS |
3197 | PL_expect = XOPERATOR; |
3198 | PL_pending_ident = '#'; | |
463ee0b2 | 3199 | TOKEN(DOLSHARP); |
79072805 | 3200 | } |
bbce6d69 | 3201 | |
3280af22 | 3202 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3203 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3204 | sizeof PL_tokenbuf - 1, FALSE); | |
3205 | if (PL_expect == XOPERATOR) | |
3206 | no_op("Scalar", s); | |
3280af22 NIS |
3207 | if (!PL_tokenbuf[1]) { |
3208 | if (s == PL_bufend) | |
bbce6d69 | 3209 | yyerror("Final $ should be \\$ or $name"); |
3210 | PREREF('$'); | |
8990e307 | 3211 | } |
a0d0e21e | 3212 | |
bbce6d69 | 3213 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3214 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3215 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3216 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3217 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3218 | TERM(THING); | |
3219 | } | |
3220 | ||
ff68c719 | 3221 | d = s; |
69d2bceb | 3222 | tmp = (I32)*s; |
3280af22 | 3223 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3224 | s = skipspace(s); |
3225 | ||
3280af22 | 3226 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3227 | char *t; |
3228 | if (*s == '[') { | |
3280af22 | 3229 | PL_tokenbuf[0] = '@'; |
599cee73 | 3230 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3231 | for(t = s + 1; |
7e2040f0 | 3232 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3233 | t++) ; |
a0d0e21e | 3234 | if (*t++ == ',') { |
3280af22 NIS |
3235 | PL_bufptr = skipspace(PL_bufptr); |
3236 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3237 | t++; |
cea2e8a9 | 3238 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3239 | "Multidimensional syntax %.*s not supported", |
3240 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3241 | } |
3242 | } | |
bbce6d69 | 3243 | } |
3244 | else if (*s == '{') { | |
3280af22 | 3245 | PL_tokenbuf[0] = '%'; |
599cee73 | 3246 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3247 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3248 | { | |
3280af22 | 3249 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3250 | STRLEN len; |
3251 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3252 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3253 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3254 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3255 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3256 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3257 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3258 | } |
93a17b20 LW |
3259 | } |
3260 | } | |
2f3197b3 | 3261 | } |
bbce6d69 | 3262 | |
3280af22 | 3263 | PL_expect = XOPERATOR; |
69d2bceb | 3264 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3265 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3266 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3267 | PL_expect = XOPERATOR; | |
bbce6d69 | 3268 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3269 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3270 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3271 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3272 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3273 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3274 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3275 | if (tmp = keyword(tmpbuf, len)) { |
3276 | /* binary operators exclude handle interpretations */ | |
3277 | switch (tmp) { | |
3278 | case -KEY_x: | |
3279 | case -KEY_eq: | |
3280 | case -KEY_ne: | |
3281 | case -KEY_gt: | |
3282 | case -KEY_lt: | |
3283 | case -KEY_ge: | |
3284 | case -KEY_le: | |
3285 | case -KEY_cmp: | |
3286 | break; | |
3287 | default: | |
3280af22 | 3288 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3289 | break; |
3290 | } | |
3291 | } | |
68dc0745 | 3292 | else { |
3293 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3294 | if (gv && GvCVu(gv)) | |
3280af22 | 3295 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3296 | } |
93a17b20 | 3297 | } |
bbce6d69 | 3298 | else if (isDIGIT(*s)) |
3280af22 | 3299 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3300 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3301 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3302 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3303 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3304 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3305 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3306 | } |
3280af22 | 3307 | PL_pending_ident = '$'; |
79072805 | 3308 | TOKEN('$'); |
378cc40b LW |
3309 | |
3310 | case '@': | |
3280af22 | 3311 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3312 | no_op("Array", s); |
3280af22 NIS |
3313 | PL_tokenbuf[0] = '@'; |
3314 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3315 | if (!PL_tokenbuf[1]) { | |
3316 | if (s == PL_bufend) | |
bbce6d69 | 3317 | yyerror("Final @ should be \\@ or @name"); |
3318 | PREREF('@'); | |
3319 | } | |
3280af22 | 3320 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3321 | s = skipspace(s); |
3280af22 | 3322 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3323 | if (*s == '{') |
3280af22 | 3324 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3325 | |
3326 | /* Warn about @ where they meant $. */ | |
599cee73 | 3327 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3328 | if (*s == '[' || *s == '{') { |
3329 | char *t = s + 1; | |
7e2040f0 | 3330 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3331 | t++; |
3332 | if (*t == '}' || *t == ']') { | |
3333 | t++; | |
3280af22 | 3334 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3335 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3336 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3337 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3338 | } |
93a17b20 LW |
3339 | } |
3340 | } | |
463ee0b2 | 3341 | } |
3280af22 | 3342 | PL_pending_ident = '@'; |
79072805 | 3343 | TERM('@'); |
378cc40b LW |
3344 | |
3345 | case '/': /* may either be division or pattern */ | |
3346 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3347 | if (PL_expect != XOPERATOR) { |
c277df42 | 3348 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3349 | if (PL_oldoldbufptr == PL_last_uni |
3350 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
7e2040f0 GS |
3351 | || memNE(PL_last_uni, "study", 5) |
3352 | || isALNUM_lazy_if(PL_last_uni+5,UTF))) | |
c277df42 | 3353 | check_uni(); |
8782bef2 | 3354 | s = scan_pat(s,OP_MATCH); |
79072805 | 3355 | TERM(sublex_start()); |
378cc40b LW |
3356 | } |
3357 | tmp = *s++; | |
a687059c | 3358 | if (tmp == '/') |
79072805 | 3359 | Mop(OP_DIVIDE); |
378cc40b LW |
3360 | OPERATOR(tmp); |
3361 | ||
3362 | case '.': | |
51882d45 GS |
3363 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3364 | #ifdef PERL_STRICT_CR | |
3365 | && s[1] == '\n' | |
3366 | #else | |
3367 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3368 | #endif | |
3369 | && (s == PL_linestart || s[-1] == '\n') ) | |
3370 | { | |
3280af22 NIS |
3371 | PL_lex_formbrack = 0; |
3372 | PL_expect = XSTATE; | |
79072805 LW |
3373 | goto rightbracket; |
3374 | } | |
3280af22 | 3375 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3376 | tmp = *s++; |
a687059c LW |
3377 | if (*s == tmp) { |
3378 | s++; | |
2f3197b3 LW |
3379 | if (*s == tmp) { |
3380 | s++; | |
79072805 | 3381 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3382 | } |
3383 | else | |
79072805 | 3384 | yylval.ival = 0; |
378cc40b | 3385 | OPERATOR(DOTDOT); |
a687059c | 3386 | } |
3280af22 | 3387 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3388 | check_uni(); |
79072805 | 3389 | Aop(OP_CONCAT); |
378cc40b LW |
3390 | } |
3391 | /* FALL THROUGH */ | |
3392 | case '0': case '1': case '2': case '3': case '4': | |
3393 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3394 | s = scan_num(s); |
3280af22 | 3395 | if (PL_expect == XOPERATOR) |
8990e307 | 3396 | no_op("Number",s); |
79072805 LW |
3397 | TERM(THING); |
3398 | ||
3399 | case '\'': | |
09bef843 | 3400 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3401 | if (PL_expect == XOPERATOR) { |
3402 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3403 | PL_expect = XTERM; | |
a0d0e21e LW |
3404 | depcom(); |
3405 | return ','; /* grandfather non-comma-format format */ | |
3406 | } | |
463ee0b2 | 3407 | else |
8990e307 | 3408 | no_op("String",s); |
463ee0b2 | 3409 | } |
79072805 | 3410 | if (!s) |
85e6fe83 | 3411 | missingterm((char*)0); |
79072805 LW |
3412 | yylval.ival = OP_CONST; |
3413 | TERM(sublex_start()); | |
3414 | ||
3415 | case '"': | |
09bef843 | 3416 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3417 | if (PL_expect == XOPERATOR) { |
3418 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3419 | PL_expect = XTERM; | |
a0d0e21e LW |
3420 | depcom(); |
3421 | return ','; /* grandfather non-comma-format format */ | |
3422 | } | |
463ee0b2 | 3423 | else |
8990e307 | 3424 | no_op("String",s); |
463ee0b2 | 3425 | } |
79072805 | 3426 | if (!s) |
85e6fe83 | 3427 | missingterm((char*)0); |
4633a7c4 | 3428 | yylval.ival = OP_CONST; |
3280af22 | 3429 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3430 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3431 | yylval.ival = OP_STRINGIFY; |
3432 | break; | |
3433 | } | |
3434 | } | |
79072805 LW |
3435 | TERM(sublex_start()); |
3436 | ||
3437 | case '`': | |
09bef843 | 3438 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3439 | if (PL_expect == XOPERATOR) |
8990e307 | 3440 | no_op("Backticks",s); |
79072805 | 3441 | if (!s) |
85e6fe83 | 3442 | missingterm((char*)0); |
79072805 LW |
3443 | yylval.ival = OP_BACKTICK; |
3444 | set_csh(); | |
3445 | TERM(sublex_start()); | |
3446 | ||
3447 | case '\\': | |
3448 | s++; | |
599cee73 | 3449 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3450 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3451 | *s, *s); |
3280af22 | 3452 | if (PL_expect == XOPERATOR) |
8990e307 | 3453 | no_op("Backslash",s); |
79072805 LW |
3454 | OPERATOR(REFGEN); |
3455 | ||
a7cb1f99 GS |
3456 | case 'v': |
3457 | if (isDIGIT(s[1]) && PL_expect == XTERM) { | |
3458 | char *start = s; | |
3459 | start++; | |
3460 | start++; | |
3461 | while (isDIGIT(*start)) | |
3462 | start++; | |
3463 | if (*start == '.' && isDIGIT(start[1])) { | |
3464 | s = scan_num(s); | |
3465 | TERM(THING); | |
3466 | } | |
3467 | } | |
3468 | goto keylookup; | |
79072805 | 3469 | case 'x': |
3280af22 | 3470 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3471 | s++; |
3472 | Mop(OP_REPEAT); | |
2f3197b3 | 3473 | } |
79072805 LW |
3474 | goto keylookup; |
3475 | ||
378cc40b | 3476 | case '_': |
79072805 LW |
3477 | case 'a': case 'A': |
3478 | case 'b': case 'B': | |
3479 | case 'c': case 'C': | |
3480 | case 'd': case 'D': | |
3481 | case 'e': case 'E': | |
3482 | case 'f': case 'F': | |
3483 | case 'g': case 'G': | |
3484 | case 'h': case 'H': | |
3485 | case 'i': case 'I': | |
3486 | case 'j': case 'J': | |
3487 | case 'k': case 'K': | |
3488 | case 'l': case 'L': | |
3489 | case 'm': case 'M': | |
3490 | case 'n': case 'N': | |
3491 | case 'o': case 'O': | |
3492 | case 'p': case 'P': | |
3493 | case 'q': case 'Q': | |
3494 | case 'r': case 'R': | |
3495 | case 's': case 'S': | |
3496 | case 't': case 'T': | |
3497 | case 'u': case 'U': | |
a7cb1f99 | 3498 | case 'V': |
79072805 LW |
3499 | case 'w': case 'W': |
3500 | case 'X': | |
3501 | case 'y': case 'Y': | |
3502 | case 'z': case 'Z': | |
3503 | ||
49dc05e3 | 3504 | keylookup: { |
2d8e6c8d | 3505 | STRLEN n_a; |
161b471a NIS |
3506 | gv = Nullgv; |
3507 | gvp = 0; | |
49dc05e3 | 3508 | |
3280af22 NIS |
3509 | PL_bufptr = s; |
3510 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3511 | |
3512 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3513 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3514 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3515 | (PL_tokenbuf[0] == 'q' && | |
3516 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3517 | |
3518 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3519 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3520 | goto just_a_word; |
3521 | ||
3643fb5f | 3522 | d = s; |
3280af22 | 3523 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3524 | d++; /* no comments skipped here, or s### is misparsed */ |
3525 | ||
3526 | /* Is this a label? */ | |
3280af22 NIS |
3527 | if (!tmp && PL_expect == XSTATE |
3528 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3529 | s = d + 1; |
3280af22 | 3530 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3531 | CLINE; |
3532 | TOKEN(LABEL); | |
3643fb5f CS |
3533 | } |
3534 | ||
3535 | /* Check for keywords */ | |
3280af22 | 3536 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3537 | |
3538 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3539 | if (strnEQ(d,"=>",2)) { |
3540 | CLINE; | |
3280af22 | 3541 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3542 | yylval.opval->op_private = OPpCONST_BARE; |
3543 | TERM(WORD); | |
3544 | } | |
3545 | ||
a0d0e21e | 3546 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3547 | GV *ogv = Nullgv; /* override (winner) */ |
3548 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3549 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3550 | CV *cv; |
3280af22 | 3551 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3552 | (cv = GvCVu(gv))) |
3553 | { | |
3554 | if (GvIMPORTED_CV(gv)) | |
3555 | ogv = gv; | |
3556 | else if (! CvMETHOD(cv)) | |
3557 | hgv = gv; | |
3558 | } | |
3559 | if (!ogv && | |
3280af22 NIS |
3560 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3561 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3562 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3563 | { | |
3564 | ogv = gv; | |
3565 | } | |
3566 | } | |
3567 | if (ogv) { | |
3568 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3569 | } |
3570 | else if (gv && !gvp | |
3571 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3572 | && GvCVu(gv) |
3280af22 | 3573 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3574 | { |
3575 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3576 | } |
56f7f34b CS |
3577 | else { /* no override */ |
3578 | tmp = -tmp; | |
3579 | gv = Nullgv; | |
3580 | gvp = 0; | |
4944e2f7 GS |
3581 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3582 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3583 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3584 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3585 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3586 | } |
a0d0e21e LW |
3587 | } |
3588 | ||
3589 | reserved_word: | |
3590 | switch (tmp) { | |
79072805 LW |
3591 | |
3592 | default: /* not a keyword */ | |
93a17b20 | 3593 | just_a_word: { |
96e4d5b1 | 3594 | SV *sv; |
3280af22 | 3595 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3596 | |
3597 | /* Get the rest if it looks like a package qualifier */ | |
3598 | ||
a0d0e21e | 3599 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3600 | STRLEN morelen; |
3280af22 | 3601 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3602 | TRUE, &morelen); |
3603 | if (!morelen) | |
cea2e8a9 | 3604 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3605 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3606 | len += morelen; |
a0d0e21e | 3607 | } |
8990e307 | 3608 | |
3280af22 NIS |
3609 | if (PL_expect == XOPERATOR) { |
3610 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3611 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3612 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3613 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3614 | } |
3615 | else | |
54310121 | 3616 | no_op("Bareword",s); |
463ee0b2 | 3617 | } |
8990e307 | 3618 | |
c3e0f903 GS |
3619 | /* Look for a subroutine with this name in current package, |
3620 | unless name is "Foo::", in which case Foo is a bearword | |
3621 | (and a package name). */ | |
3622 | ||
3623 | if (len > 2 && | |
3280af22 | 3624 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3625 | { |
599cee73 | 3626 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
cea2e8a9 | 3627 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3628 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3629 | PL_tokenbuf); |
c3e0f903 | 3630 | len -= 2; |
3280af22 | 3631 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3632 | gv = Nullgv; |
3633 | gvp = 0; | |
3634 | } | |
3635 | else { | |
3636 | len = 0; | |
3637 | if (!gv) | |
3280af22 | 3638 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3639 | } |
3640 | ||
3641 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3642 | |
49dc05e3 | 3643 | if (gvp) { |
79cb57f6 | 3644 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3645 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3646 | } |
3647 | else | |
3280af22 | 3648 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3649 | |
a0d0e21e LW |
3650 | /* Presume this is going to be a bareword of some sort. */ |
3651 | ||
3652 | CLINE; | |
49dc05e3 | 3653 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3654 | yylval.opval->op_private = OPpCONST_BARE; |
3655 | ||
c3e0f903 GS |
3656 | /* And if "Foo::", then that's what it certainly is. */ |
3657 | ||
3658 | if (len) | |
3659 | goto safe_bareword; | |
3660 | ||
8990e307 LW |
3661 | /* See if it's the indirect object for a list operator. */ |
3662 | ||
3280af22 NIS |
3663 | if (PL_oldoldbufptr && |
3664 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3665 | (PL_oldoldbufptr == PL_last_lop |
3666 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3667 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3668 | (PL_expect == XREF || |
3669 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3670 | { |
748a9306 LW |
3671 | bool immediate_paren = *s == '('; |
3672 | ||
a0d0e21e LW |
3673 | /* (Now we can afford to cross potential line boundary.) */ |
3674 | s = skipspace(s); | |
3675 | ||
3676 | /* Two barewords in a row may indicate method call. */ | |
3677 | ||
7e2040f0 | 3678 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3679 | return tmp; |
3680 | ||
3681 | /* If not a declared subroutine, it's an indirect object. */ | |
3682 | /* (But it's an indir obj regardless for sort.) */ | |
3683 | ||
3280af22 | 3684 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3685 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3686 | (PL_last_lop_op != OP_MAPSTART && | |
3687 | PL_last_lop_op != OP_GREPSTART)) | |
3688 | { | |
3280af22 | 3689 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3690 | goto bareword; |
93a17b20 LW |
3691 | } |
3692 | } | |
8990e307 LW |
3693 | |
3694 | /* If followed by a paren, it's certainly a subroutine. */ | |
3695 | ||
3280af22 | 3696 | PL_expect = XOPERATOR; |
8990e307 | 3697 | s = skipspace(s); |
93a17b20 | 3698 | if (*s == '(') { |
79072805 | 3699 | CLINE; |
96e4d5b1 | 3700 | if (gv && GvCVu(gv)) { |
3701 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3702 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3703 | s = d + 1; |
3704 | goto its_constant; | |
3705 | } | |
3706 | } | |
3280af22 NIS |
3707 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3708 | PL_expect = XOPERATOR; | |
93a17b20 | 3709 | force_next(WORD); |
c07a80fd | 3710 | yylval.ival = 0; |
463ee0b2 | 3711 | TOKEN('&'); |
79072805 | 3712 | } |
93a17b20 | 3713 | |
a0d0e21e | 3714 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3715 | |
8ebc5c01 | 3716 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3717 | PL_last_lop = PL_oldbufptr; |
3718 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3719 | PREBLOCK(METHOD); |
463ee0b2 LW |
3720 | } |
3721 | ||
8990e307 LW |
3722 | /* If followed by a bareword, see if it looks like indir obj. */ |
3723 | ||
7e2040f0 | 3724 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3725 | return tmp; |
93a17b20 | 3726 | |
8990e307 LW |
3727 | /* Not a method, so call it a subroutine (if defined) */ |
3728 | ||
8ebc5c01 | 3729 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3730 | CV* cv; |
0453d815 PM |
3731 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3732 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3733 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3734 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3735 | /* Check for a constant sub */ |
46fc3d4c | 3736 | cv = GvCV(gv); |
96e4d5b1 | 3737 | if ((sv = cv_const_sv(cv))) { |
3738 | its_constant: | |
3739 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3740 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3741 | yylval.opval->op_private = 0; | |
3742 | TOKEN(WORD); | |
89bfa8cd | 3743 | } |
3744 | ||
a5f75d66 AD |
3745 | /* Resolve to GV now. */ |
3746 | op_free(yylval.opval); | |
3747 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3748 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3749 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3750 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3751 | /* Is there a prototype? */ |
3752 | if (SvPOK(cv)) { | |
3753 | STRLEN len; | |
7a52d87a | 3754 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3755 | if (!len) |
3756 | TERM(FUNC0SUB); | |
7a52d87a | 3757 | if (strEQ(proto, "$")) |
4633a7c4 | 3758 | OPERATOR(UNIOPSUB); |
7a52d87a | 3759 | if (*proto == '&' && *s == '{') { |
3280af22 | 3760 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3761 | PREBLOCK(LSTOPSUB); |
3762 | } | |
a9ef352a | 3763 | } |
3280af22 NIS |
3764 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3765 | PL_expect = XTERM; | |
8990e307 LW |
3766 | force_next(WORD); |
3767 | TOKEN(NOAMP); | |
3768 | } | |
748a9306 | 3769 | |
8990e307 LW |
3770 | /* Call it a bare word */ |
3771 | ||
5603f27d GS |
3772 | if (PL_hints & HINT_STRICT_SUBS) |
3773 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3774 | else { | |
3775 | bareword: | |
3776 | if (ckWARN(WARN_RESERVED)) { | |
3777 | if (lastchar != '-') { | |
3778 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3779 | if (!*d) | |
cea2e8a9 | 3780 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3781 | PL_tokenbuf); |
3782 | } | |
748a9306 LW |
3783 | } |
3784 | } | |
c3e0f903 GS |
3785 | |
3786 | safe_bareword: | |
f248d071 | 3787 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3788 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3789 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3790 | lastchar, PL_tokenbuf); |
0453d815 PM |
3791 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3792 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3793 | lastchar, lastchar); |
3794 | } | |
93a17b20 | 3795 | TOKEN(WORD); |
79072805 | 3796 | } |
79072805 | 3797 | |
68dc0745 | 3798 | case KEY___FILE__: |
46fc3d4c | 3799 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3800 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3801 | TERM(THING); |
3802 | ||
79072805 | 3803 | case KEY___LINE__: |
cf2093f6 | 3804 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3805 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3806 | TERM(THING); |
68dc0745 | 3807 | |
3808 | case KEY___PACKAGE__: | |
3809 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3810 | (PL_curstash |
3811 | ? newSVsv(PL_curstname) | |
3812 | : &PL_sv_undef)); | |
79072805 | 3813 | TERM(THING); |
79072805 | 3814 | |
e50aee73 | 3815 | case KEY___DATA__: |
79072805 LW |
3816 | case KEY___END__: { |
3817 | GV *gv; | |
79072805 LW |
3818 | |
3819 | /*SUPPRESS 560*/ | |
3280af22 | 3820 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3821 | char *pname = "main"; |
3280af22 NIS |
3822 | if (PL_tokenbuf[2] == 'D') |
3823 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3824 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3825 | GvMULTI_on(gv); |
79072805 | 3826 | if (!GvIO(gv)) |
a0d0e21e | 3827 | GvIOp(gv) = newIO(); |
3280af22 | 3828 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3829 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3830 | { | |
3280af22 | 3831 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3832 | fcntl(fd,F_SETFD,fd >= 3); |
3833 | } | |
79072805 | 3834 | #endif |
fd049845 | 3835 | /* Mark this internal pseudo-handle as clean */ |
3836 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3837 | if (PL_preprocess) |
a0d0e21e | 3838 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3839 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3840 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3841 | else |
a0d0e21e | 3842 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3843 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3844 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 3845 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 3846 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
3847 | if (PL_bufend-PL_bufptr > 2 |
3848 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
3849 | { |
3850 | Off_t loc = 0; | |
3851 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3852 | loc = PerlIO_tell(PL_rsfp); | |
3853 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3854 | } | |
3855 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3856 | #if defined(__BORLANDC__) | |
3857 | /* XXX see note in do_binmode() */ | |
3858 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3859 | #endif | |
3860 | if (loc > 0) | |
3861 | PerlIO_seek(PL_rsfp, loc, 0); | |
3862 | } | |
3863 | } | |
3864 | #endif | |
3280af22 | 3865 | PL_rsfp = Nullfp; |
79072805 LW |
3866 | } |
3867 | goto fake_eof; | |
e929a76b | 3868 | } |
de3bb511 | 3869 | |
8990e307 | 3870 | case KEY_AUTOLOAD: |
ed6116ce | 3871 | case KEY_DESTROY: |
79072805 | 3872 | case KEY_BEGIN: |
7d30b5c4 | 3873 | case KEY_CHECK: |
7d07dbc2 | 3874 | case KEY_INIT: |
7d30b5c4 | 3875 | case KEY_END: |
3280af22 NIS |
3876 | if (PL_expect == XSTATE) { |
3877 | s = PL_bufptr; | |
93a17b20 | 3878 | goto really_sub; |
79072805 LW |
3879 | } |
3880 | goto just_a_word; | |
3881 | ||
a0d0e21e LW |
3882 | case KEY_CORE: |
3883 | if (*s == ':' && s[1] == ':') { | |
3884 | s += 2; | |
748a9306 | 3885 | d = s; |
3280af22 NIS |
3886 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3887 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3888 | if (tmp < 0) |
3889 | tmp = -tmp; | |
3890 | goto reserved_word; | |
3891 | } | |
3892 | goto just_a_word; | |
3893 | ||
463ee0b2 LW |
3894 | case KEY_abs: |
3895 | UNI(OP_ABS); | |
3896 | ||
79072805 LW |
3897 | case KEY_alarm: |
3898 | UNI(OP_ALARM); | |
3899 | ||
3900 | case KEY_accept: | |
a0d0e21e | 3901 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3902 | |
463ee0b2 LW |
3903 | case KEY_and: |
3904 | OPERATOR(ANDOP); | |
3905 | ||
79072805 | 3906 | case KEY_atan2: |
a0d0e21e | 3907 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3908 | |
79072805 | 3909 | case KEY_bind: |
a0d0e21e | 3910 | LOP(OP_BIND,XTERM); |
79072805 LW |
3911 | |
3912 | case KEY_binmode: | |
3913 | UNI(OP_BINMODE); | |
3914 | ||
3915 | case KEY_bless: | |
a0d0e21e | 3916 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3917 | |
3918 | case KEY_chop: | |
3919 | UNI(OP_CHOP); | |
3920 | ||
3921 | case KEY_continue: | |
3922 | PREBLOCK(CONTINUE); | |
3923 | ||
3924 | case KEY_chdir: | |
85e6fe83 | 3925 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3926 | UNI(OP_CHDIR); |
3927 | ||
3928 | case KEY_close: | |
3929 | UNI(OP_CLOSE); | |
3930 | ||
3931 | case KEY_closedir: | |
3932 | UNI(OP_CLOSEDIR); | |
3933 | ||
3934 | case KEY_cmp: | |
3935 | Eop(OP_SCMP); | |
3936 | ||
3937 | case KEY_caller: | |
3938 | UNI(OP_CALLER); | |
3939 | ||
3940 | case KEY_crypt: | |
3941 | #ifdef FCRYPT | |
f4c556ac GS |
3942 | if (!PL_cryptseen) { |
3943 | PL_cryptseen = TRUE; | |
de3bb511 | 3944 | init_des(); |
f4c556ac | 3945 | } |
a687059c | 3946 | #endif |
a0d0e21e | 3947 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3948 | |
3949 | case KEY_chmod: | |
599cee73 | 3950 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3951 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 3952 | if (*d != '0' && isDIGIT(*d)) |
4438c4b7 JH |
3953 | Perl_warner(aTHX_ WARN_OCTAL, |
3954 | "chmod: mode argument is missing initial 0"); | |
748a9306 | 3955 | } |
a0d0e21e | 3956 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3957 | |
3958 | case KEY_chown: | |
a0d0e21e | 3959 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3960 | |
3961 | case KEY_connect: | |
a0d0e21e | 3962 | LOP(OP_CONNECT,XTERM); |
79072805 | 3963 | |
463ee0b2 LW |
3964 | case KEY_chr: |
3965 | UNI(OP_CHR); | |
3966 | ||
79072805 LW |
3967 | case KEY_cos: |
3968 | UNI(OP_COS); | |
3969 | ||
3970 | case KEY_chroot: | |
3971 | UNI(OP_CHROOT); | |
3972 | ||
3973 | case KEY_do: | |
3974 | s = skipspace(s); | |
3975 | if (*s == '{') | |
a0d0e21e | 3976 | PRETERMBLOCK(DO); |
79072805 | 3977 | if (*s != '\'') |
a0d0e21e | 3978 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3979 | OPERATOR(DO); |
79072805 LW |
3980 | |
3981 | case KEY_die: | |
3280af22 | 3982 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3983 | LOP(OP_DIE,XTERM); |
79072805 LW |
3984 | |
3985 | case KEY_defined: | |
3986 | UNI(OP_DEFINED); | |
3987 | ||
3988 | case KEY_delete: | |
a0d0e21e | 3989 | UNI(OP_DELETE); |
79072805 LW |
3990 | |
3991 | case KEY_dbmopen: | |
a0d0e21e LW |
3992 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3993 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3994 | |
3995 | case KEY_dbmclose: | |
3996 | UNI(OP_DBMCLOSE); | |
3997 | ||
3998 | case KEY_dump: | |
a0d0e21e | 3999 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4000 | LOOPX(OP_DUMP); |
4001 | ||
4002 | case KEY_else: | |
4003 | PREBLOCK(ELSE); | |
4004 | ||
4005 | case KEY_elsif: | |
57843af0 | 4006 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4007 | OPERATOR(ELSIF); |
4008 | ||
4009 | case KEY_eq: | |
4010 | Eop(OP_SEQ); | |
4011 | ||
a0d0e21e LW |
4012 | case KEY_exists: |
4013 | UNI(OP_EXISTS); | |
4014 | ||
79072805 LW |
4015 | case KEY_exit: |
4016 | UNI(OP_EXIT); | |
4017 | ||
4018 | case KEY_eval: | |
79072805 | 4019 | s = skipspace(s); |
3280af22 | 4020 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4021 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4022 | |
4023 | case KEY_eof: | |
4024 | UNI(OP_EOF); | |
4025 | ||
4026 | case KEY_exp: | |
4027 | UNI(OP_EXP); | |
4028 | ||
4029 | case KEY_each: | |
4030 | UNI(OP_EACH); | |
4031 | ||
4032 | case KEY_exec: | |
4033 | set_csh(); | |
a0d0e21e | 4034 | LOP(OP_EXEC,XREF); |
79072805 LW |
4035 | |
4036 | case KEY_endhostent: | |
4037 | FUN0(OP_EHOSTENT); | |
4038 | ||
4039 | case KEY_endnetent: | |
4040 | FUN0(OP_ENETENT); | |
4041 | ||
4042 | case KEY_endservent: | |
4043 | FUN0(OP_ESERVENT); | |
4044 | ||
4045 | case KEY_endprotoent: | |
4046 | FUN0(OP_EPROTOENT); | |
4047 | ||
4048 | case KEY_endpwent: | |
4049 | FUN0(OP_EPWENT); | |
4050 | ||
4051 | case KEY_endgrent: | |
4052 | FUN0(OP_EGRENT); | |
4053 | ||
4054 | case KEY_for: | |
4055 | case KEY_foreach: | |
57843af0 | 4056 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4057 | s = skipspace(s); |
7e2040f0 | 4058 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4059 | char *p = s; |
3280af22 | 4060 | if ((PL_bufend - p) >= 3 && |
55497cff | 4061 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4062 | p += 2; | |
77ca0c92 LW |
4063 | else if ((PL_bufend - p) >= 4 && |
4064 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4065 | p += 3; | |
55497cff | 4066 | p = skipspace(p); |
7e2040f0 | 4067 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4068 | p = scan_ident(p, PL_bufend, |
4069 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4070 | p = skipspace(p); | |
4071 | } | |
4072 | if (*p != '$') | |
cea2e8a9 | 4073 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4074 | } |
79072805 LW |
4075 | OPERATOR(FOR); |
4076 | ||
4077 | case KEY_formline: | |
a0d0e21e | 4078 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4079 | |
4080 | case KEY_fork: | |
4081 | FUN0(OP_FORK); | |
4082 | ||
4083 | case KEY_fcntl: | |
a0d0e21e | 4084 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4085 | |
4086 | case KEY_fileno: | |
4087 | UNI(OP_FILENO); | |
4088 | ||
4089 | case KEY_flock: | |
a0d0e21e | 4090 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4091 | |
4092 | case KEY_gt: | |
4093 | Rop(OP_SGT); | |
4094 | ||
4095 | case KEY_ge: | |
4096 | Rop(OP_SGE); | |
4097 | ||
4098 | case KEY_grep: | |
2c38e13d | 4099 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4100 | |
4101 | case KEY_goto: | |
a0d0e21e | 4102 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4103 | LOOPX(OP_GOTO); |
4104 | ||
4105 | case KEY_gmtime: | |
4106 | UNI(OP_GMTIME); | |
4107 | ||
4108 | case KEY_getc: | |
4109 | UNI(OP_GETC); | |
4110 | ||
4111 | case KEY_getppid: | |
4112 | FUN0(OP_GETPPID); | |
4113 | ||
4114 | case KEY_getpgrp: | |
4115 | UNI(OP_GETPGRP); | |
4116 | ||
4117 | case KEY_getpriority: | |
a0d0e21e | 4118 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4119 | |
4120 | case KEY_getprotobyname: | |
4121 | UNI(OP_GPBYNAME); | |
4122 | ||
4123 | case KEY_getprotobynumber: | |
a0d0e21e | 4124 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4125 | |
4126 | case KEY_getprotoent: | |
4127 | FUN0(OP_GPROTOENT); | |
4128 | ||
4129 | case KEY_getpwent: | |
4130 | FUN0(OP_GPWENT); | |
4131 | ||
4132 | case KEY_getpwnam: | |
ff68c719 | 4133 | UNI(OP_GPWNAM); |
79072805 LW |
4134 | |
4135 | case KEY_getpwuid: | |
ff68c719 | 4136 | UNI(OP_GPWUID); |
79072805 LW |
4137 | |
4138 | case KEY_getpeername: | |
4139 | UNI(OP_GETPEERNAME); | |
4140 | ||
4141 | case KEY_gethostbyname: | |
4142 | UNI(OP_GHBYNAME); | |
4143 | ||
4144 | case KEY_gethostbyaddr: | |
a0d0e21e | 4145 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4146 | |
4147 | case KEY_gethostent: | |
4148 | FUN0(OP_GHOSTENT); | |
4149 | ||
4150 | case KEY_getnetbyname: | |
4151 | UNI(OP_GNBYNAME); | |
4152 | ||
4153 | case KEY_getnetbyaddr: | |
a0d0e21e | 4154 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4155 | |
4156 | case KEY_getnetent: | |
4157 | FUN0(OP_GNETENT); | |
4158 | ||
4159 | case KEY_getservbyname: | |
a0d0e21e | 4160 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4161 | |
4162 | case KEY_getservbyport: | |
a0d0e21e | 4163 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4164 | |
4165 | case KEY_getservent: | |
4166 | FUN0(OP_GSERVENT); | |
4167 | ||
4168 | case KEY_getsockname: | |
4169 | UNI(OP_GETSOCKNAME); | |
4170 | ||
4171 | case KEY_getsockopt: | |
a0d0e21e | 4172 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4173 | |
4174 | case KEY_getgrent: | |
4175 | FUN0(OP_GGRENT); | |
4176 | ||
4177 | case KEY_getgrnam: | |
ff68c719 | 4178 | UNI(OP_GGRNAM); |
79072805 LW |
4179 | |
4180 | case KEY_getgrgid: | |
ff68c719 | 4181 | UNI(OP_GGRGID); |
79072805 LW |
4182 | |
4183 | case KEY_getlogin: | |
4184 | FUN0(OP_GETLOGIN); | |
4185 | ||
93a17b20 | 4186 | case KEY_glob: |
a0d0e21e LW |
4187 | set_csh(); |
4188 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4189 | |
79072805 LW |
4190 | case KEY_hex: |
4191 | UNI(OP_HEX); | |
4192 | ||
4193 | case KEY_if: | |
57843af0 | 4194 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4195 | OPERATOR(IF); |
4196 | ||
4197 | case KEY_index: | |
a0d0e21e | 4198 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4199 | |
4200 | case KEY_int: | |
4201 | UNI(OP_INT); | |
4202 | ||
4203 | case KEY_ioctl: | |
a0d0e21e | 4204 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4205 | |
4206 | case KEY_join: | |
a0d0e21e | 4207 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4208 | |
4209 | case KEY_keys: | |
4210 | UNI(OP_KEYS); | |
4211 | ||
4212 | case KEY_kill: | |
a0d0e21e | 4213 | LOP(OP_KILL,XTERM); |
79072805 LW |
4214 | |
4215 | case KEY_last: | |
a0d0e21e | 4216 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4217 | LOOPX(OP_LAST); |
a0d0e21e | 4218 | |
79072805 LW |
4219 | case KEY_lc: |
4220 | UNI(OP_LC); | |
4221 | ||
4222 | case KEY_lcfirst: | |
4223 | UNI(OP_LCFIRST); | |
4224 | ||
4225 | case KEY_local: | |
09bef843 | 4226 | yylval.ival = 0; |
79072805 LW |
4227 | OPERATOR(LOCAL); |
4228 | ||
4229 | case KEY_length: | |
4230 | UNI(OP_LENGTH); | |
4231 | ||
4232 | case KEY_lt: | |
4233 | Rop(OP_SLT); | |
4234 | ||
4235 | case KEY_le: | |
4236 | Rop(OP_SLE); | |
4237 | ||
4238 | case KEY_localtime: | |
4239 | UNI(OP_LOCALTIME); | |
4240 | ||
4241 | case KEY_log: | |
4242 | UNI(OP_LOG); | |
4243 | ||
4244 | case KEY_link: | |
a0d0e21e | 4245 | LOP(OP_LINK,XTERM); |
79072805 LW |
4246 | |
4247 | case KEY_listen: | |
a0d0e21e | 4248 | LOP(OP_LISTEN,XTERM); |
79072805 | 4249 | |
c0329465 MB |
4250 | case KEY_lock: |
4251 | UNI(OP_LOCK); | |
4252 | ||
79072805 LW |
4253 | case KEY_lstat: |
4254 | UNI(OP_LSTAT); | |
4255 | ||
4256 | case KEY_m: | |
8782bef2 | 4257 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4258 | TERM(sublex_start()); |
4259 | ||
a0d0e21e | 4260 | case KEY_map: |
2c38e13d | 4261 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4262 | |
79072805 | 4263 | case KEY_mkdir: |
a0d0e21e | 4264 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4265 | |
4266 | case KEY_msgctl: | |
a0d0e21e | 4267 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4268 | |
4269 | case KEY_msgget: | |
a0d0e21e | 4270 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4271 | |
4272 | case KEY_msgrcv: | |
a0d0e21e | 4273 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4274 | |
4275 | case KEY_msgsnd: | |
a0d0e21e | 4276 | LOP(OP_MSGSND,XTERM); |
79072805 | 4277 | |
77ca0c92 | 4278 | case KEY_our: |
93a17b20 | 4279 | case KEY_my: |
77ca0c92 | 4280 | PL_in_my = tmp; |
c750a3ec | 4281 | s = skipspace(s); |
7e2040f0 | 4282 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4283 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4284 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4285 | goto really_sub; | |
3280af22 NIS |
4286 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4287 | if (!PL_in_my_stash) { | |
c750a3ec | 4288 | char tmpbuf[1024]; |
3280af22 NIS |
4289 | PL_bufptr = s; |
4290 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4291 | yyerror(tmpbuf); |
4292 | } | |
4293 | } | |
09bef843 | 4294 | yylval.ival = 1; |
55497cff | 4295 | OPERATOR(MY); |
93a17b20 | 4296 | |
79072805 | 4297 | case KEY_next: |
a0d0e21e | 4298 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4299 | LOOPX(OP_NEXT); |
4300 | ||
4301 | case KEY_ne: | |
4302 | Eop(OP_SNE); | |
4303 | ||
a0d0e21e | 4304 | case KEY_no: |
3280af22 | 4305 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4306 | yyerror("\"no\" not allowed in expression"); |
4307 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4308 | s = force_version(s); |
a0d0e21e LW |
4309 | yylval.ival = 0; |
4310 | OPERATOR(USE); | |
4311 | ||
4312 | case KEY_not: | |
2d2e263d LW |
4313 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4314 | FUN1(OP_NOT); | |
4315 | else | |
4316 | OPERATOR(NOTOP); | |
a0d0e21e | 4317 | |
79072805 | 4318 | case KEY_open: |
93a17b20 | 4319 | s = skipspace(s); |
7e2040f0 | 4320 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4321 | char *t; |
7e2040f0 | 4322 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
93a17b20 | 4323 | t = skipspace(d); |
0453d815 PM |
4324 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_AMBIGUOUS)) |
4325 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
4326 | "Precedence problem: open %.*s should be open(%.*s)", | |
4327 | d-s,s, d-s,s); | |
93a17b20 | 4328 | } |
a0d0e21e | 4329 | LOP(OP_OPEN,XTERM); |
79072805 | 4330 | |
463ee0b2 | 4331 | case KEY_or: |
a0d0e21e | 4332 | yylval.ival = OP_OR; |
463ee0b2 LW |
4333 | OPERATOR(OROP); |
4334 | ||
79072805 LW |
4335 | case KEY_ord: |
4336 | UNI(OP_ORD); | |
4337 | ||
4338 | case KEY_oct: | |
4339 | UNI(OP_OCT); | |
4340 | ||
4341 | case KEY_opendir: | |
a0d0e21e | 4342 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4343 | |
4344 | case KEY_print: | |
3280af22 | 4345 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4346 | LOP(OP_PRINT,XREF); |
79072805 LW |
4347 | |
4348 | case KEY_printf: | |
3280af22 | 4349 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4350 | LOP(OP_PRTF,XREF); |
79072805 | 4351 | |
c07a80fd | 4352 | case KEY_prototype: |
4353 | UNI(OP_PROTOTYPE); | |
4354 | ||
79072805 | 4355 | case KEY_push: |
a0d0e21e | 4356 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4357 | |
4358 | case KEY_pop: | |
4359 | UNI(OP_POP); | |
4360 | ||
a0d0e21e LW |
4361 | case KEY_pos: |
4362 | UNI(OP_POS); | |
4363 | ||
79072805 | 4364 | case KEY_pack: |
a0d0e21e | 4365 | LOP(OP_PACK,XTERM); |
79072805 LW |
4366 | |
4367 | case KEY_package: | |
a0d0e21e | 4368 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4369 | OPERATOR(PACKAGE); |
4370 | ||
4371 | case KEY_pipe: | |
a0d0e21e | 4372 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4373 | |
4374 | case KEY_q: | |
09bef843 | 4375 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4376 | if (!s) |
85e6fe83 | 4377 | missingterm((char*)0); |
79072805 LW |
4378 | yylval.ival = OP_CONST; |
4379 | TERM(sublex_start()); | |
4380 | ||
a0d0e21e LW |
4381 | case KEY_quotemeta: |
4382 | UNI(OP_QUOTEMETA); | |
4383 | ||
8990e307 | 4384 | case KEY_qw: |
09bef843 | 4385 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4386 | if (!s) |
85e6fe83 | 4387 | missingterm((char*)0); |
8127e0e3 GS |
4388 | force_next(')'); |
4389 | if (SvCUR(PL_lex_stuff)) { | |
4390 | OP *words = Nullop; | |
4391 | int warned = 0; | |
3280af22 | 4392 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4393 | while (len) { |
4394 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4395 | if (len) { | |
4396 | char *b = d; | |
4397 | if (!warned && ckWARN(WARN_SYNTAX)) { | |
4398 | for (; !isSPACE(*d) && len; --len, ++d) { | |
4399 | if (*d == ',') { | |
cea2e8a9 | 4400 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4401 | "Possible attempt to separate words with commas"); |
4402 | ++warned; | |
4403 | } | |
4404 | else if (*d == '#') { | |
cea2e8a9 | 4405 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4406 | "Possible attempt to put comments in qw() list"); |
4407 | ++warned; | |
4408 | } | |
4409 | } | |
4410 | } | |
4411 | else { | |
4412 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4413 | } | |
4414 | words = append_elem(OP_LIST, words, | |
4415 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4416 | } |
4417 | } | |
8127e0e3 GS |
4418 | if (words) { |
4419 | PL_nextval[PL_nexttoke].opval = words; | |
4420 | force_next(THING); | |
4421 | } | |
55497cff | 4422 | } |
8127e0e3 GS |
4423 | if (PL_lex_stuff) |
4424 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4425 | PL_lex_stuff = Nullsv; |
3280af22 | 4426 | PL_expect = XTERM; |
8127e0e3 | 4427 | TOKEN('('); |
8990e307 | 4428 | |
79072805 | 4429 | case KEY_qq: |
09bef843 | 4430 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4431 | if (!s) |
85e6fe83 | 4432 | missingterm((char*)0); |
a0d0e21e | 4433 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4434 | if (SvIVX(PL_lex_stuff) == '\'') |
4435 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4436 | TERM(sublex_start()); |
4437 | ||
8782bef2 GB |
4438 | case KEY_qr: |
4439 | s = scan_pat(s,OP_QR); | |
4440 | TERM(sublex_start()); | |
4441 | ||
79072805 | 4442 | case KEY_qx: |
09bef843 | 4443 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4444 | if (!s) |
85e6fe83 | 4445 | missingterm((char*)0); |
79072805 LW |
4446 | yylval.ival = OP_BACKTICK; |
4447 | set_csh(); | |
4448 | TERM(sublex_start()); | |
4449 | ||
4450 | case KEY_return: | |
4451 | OLDLOP(OP_RETURN); | |
4452 | ||
4453 | case KEY_require: | |
a7cb1f99 GS |
4454 | s = skipspace(s); |
4455 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4456 | s = force_version(s); | |
4457 | } | |
4458 | else { | |
4459 | *PL_tokenbuf = '\0'; | |
4460 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4461 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4462 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
4463 | else if (*s == '<') | |
4464 | yyerror("<> should be quotes"); | |
4465 | } | |
463ee0b2 | 4466 | UNI(OP_REQUIRE); |
79072805 LW |
4467 | |
4468 | case KEY_reset: | |
4469 | UNI(OP_RESET); | |
4470 | ||
4471 | case KEY_redo: | |
a0d0e21e | 4472 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4473 | LOOPX(OP_REDO); |
4474 | ||
4475 | case KEY_rename: | |
a0d0e21e | 4476 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4477 | |
4478 | case KEY_rand: | |
4479 | UNI(OP_RAND); | |
4480 | ||
4481 | case KEY_rmdir: | |
4482 | UNI(OP_RMDIR); | |
4483 | ||
4484 | case KEY_rindex: | |
a0d0e21e | 4485 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4486 | |
4487 | case KEY_read: | |
a0d0e21e | 4488 | LOP(OP_READ,XTERM); |
79072805 LW |
4489 | |
4490 | case KEY_readdir: | |
4491 | UNI(OP_READDIR); | |
4492 | ||
93a17b20 LW |
4493 | case KEY_readline: |
4494 | set_csh(); | |
4495 | UNI(OP_READLINE); | |
4496 | ||
4497 | case KEY_readpipe: | |
4498 | set_csh(); | |
4499 | UNI(OP_BACKTICK); | |
4500 | ||
79072805 LW |
4501 | case KEY_rewinddir: |
4502 | UNI(OP_REWINDDIR); | |
4503 | ||
4504 | case KEY_recv: | |
a0d0e21e | 4505 | LOP(OP_RECV,XTERM); |
79072805 LW |
4506 | |
4507 | case KEY_reverse: | |
a0d0e21e | 4508 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4509 | |
4510 | case KEY_readlink: | |
4511 | UNI(OP_READLINK); | |
4512 | ||
4513 | case KEY_ref: | |
4514 | UNI(OP_REF); | |
4515 | ||
4516 | case KEY_s: | |
4517 | s = scan_subst(s); | |
4518 | if (yylval.opval) | |
4519 | TERM(sublex_start()); | |
4520 | else | |
4521 | TOKEN(1); /* force error */ | |
4522 | ||
a0d0e21e LW |
4523 | case KEY_chomp: |
4524 | UNI(OP_CHOMP); | |
4525 | ||
79072805 LW |
4526 | case KEY_scalar: |
4527 | UNI(OP_SCALAR); | |
4528 | ||
4529 | case KEY_select: | |
a0d0e21e | 4530 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4531 | |
4532 | case KEY_seek: | |
a0d0e21e | 4533 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4534 | |
4535 | case KEY_semctl: | |
a0d0e21e | 4536 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4537 | |
4538 | case KEY_semget: | |
a0d0e21e | 4539 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4540 | |
4541 | case KEY_semop: | |
a0d0e21e | 4542 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4543 | |
4544 | case KEY_send: | |
a0d0e21e | 4545 | LOP(OP_SEND,XTERM); |
79072805 LW |
4546 | |
4547 | case KEY_setpgrp: | |
a0d0e21e | 4548 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4549 | |
4550 | case KEY_setpriority: | |
a0d0e21e | 4551 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4552 | |
4553 | case KEY_sethostent: | |
ff68c719 | 4554 | UNI(OP_SHOSTENT); |
79072805 LW |
4555 | |
4556 | case KEY_setnetent: | |
ff68c719 | 4557 | UNI(OP_SNETENT); |
79072805 LW |
4558 | |
4559 | case KEY_setservent: | |
ff68c719 | 4560 | UNI(OP_SSERVENT); |
79072805 LW |
4561 | |
4562 | case KEY_setprotoent: | |
ff68c719 | 4563 | UNI(OP_SPROTOENT); |
79072805 LW |
4564 | |
4565 | case KEY_setpwent: | |
4566 | FUN0(OP_SPWENT); | |
4567 | ||
4568 | case KEY_setgrent: | |
4569 | FUN0(OP_SGRENT); | |
4570 | ||
4571 | case KEY_seekdir: | |
a0d0e21e | 4572 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4573 | |
4574 | case KEY_setsockopt: | |
a0d0e21e | 4575 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4576 | |
4577 | case KEY_shift: | |
4578 | UNI(OP_SHIFT); | |
4579 | ||
4580 | case KEY_shmctl: | |
a0d0e21e | 4581 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4582 | |
4583 | case KEY_shmget: | |
a0d0e21e | 4584 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4585 | |
4586 | case KEY_shmread: | |
a0d0e21e | 4587 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4588 | |
4589 | case KEY_shmwrite: | |
a0d0e21e | 4590 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4591 | |
4592 | case KEY_shutdown: | |
a0d0e21e | 4593 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4594 | |
4595 | case KEY_sin: | |
4596 | UNI(OP_SIN); | |
4597 | ||
4598 | case KEY_sleep: | |
4599 | UNI(OP_SLEEP); | |
4600 | ||
4601 | case KEY_socket: | |
a0d0e21e | 4602 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4603 | |
4604 | case KEY_socketpair: | |
a0d0e21e | 4605 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4606 | |
4607 | case KEY_sort: | |
3280af22 | 4608 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4609 | s = skipspace(s); |
4610 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4611 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4612 | PL_expect = XTERM; |
15f0808c | 4613 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4614 | LOP(OP_SORT,XREF); |
79072805 LW |
4615 | |
4616 | case KEY_split: | |
a0d0e21e | 4617 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4618 | |
4619 | case KEY_sprintf: | |
a0d0e21e | 4620 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4621 | |
4622 | case KEY_splice: | |
a0d0e21e | 4623 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4624 | |
4625 | case KEY_sqrt: | |
4626 | UNI(OP_SQRT); | |
4627 | ||
4628 | case KEY_srand: | |
4629 | UNI(OP_SRAND); | |
4630 | ||
4631 | case KEY_stat: | |
4632 | UNI(OP_STAT); | |
4633 | ||
4634 | case KEY_study: | |
79072805 LW |
4635 | UNI(OP_STUDY); |
4636 | ||
4637 | case KEY_substr: | |
a0d0e21e | 4638 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4639 | |
4640 | case KEY_format: | |
4641 | case KEY_sub: | |
93a17b20 | 4642 | really_sub: |
09bef843 | 4643 | { |
3280af22 | 4644 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4645 | SSize_t tboffset; |
09bef843 SB |
4646 | expectation attrful; |
4647 | bool have_name, have_proto; | |
4648 | int key = tmp; | |
4649 | ||
4650 | s = skipspace(s); | |
4651 | ||
7e2040f0 | 4652 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
4653 | (*s == ':' && s[1] == ':')) |
4654 | { | |
4655 | PL_expect = XBLOCK; | |
4656 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4657 | /* remember buffer pos'n for later force_word */ |
4658 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4659 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4660 | if (strchr(tmpbuf, ':')) | |
4661 | sv_setpv(PL_subname, tmpbuf); | |
4662 | else { | |
4663 | sv_setsv(PL_subname,PL_curstname); | |
4664 | sv_catpvn(PL_subname,"::",2); | |
4665 | sv_catpvn(PL_subname,tmpbuf,len); | |
4666 | } | |
4667 | s = skipspace(d); | |
4668 | have_name = TRUE; | |
4669 | } | |
463ee0b2 | 4670 | else { |
09bef843 SB |
4671 | if (key == KEY_my) |
4672 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4673 | PL_expect = XTERMBLOCK; | |
4674 | attrful = XATTRTERM; | |
4675 | sv_setpv(PL_subname,"?"); | |
4676 | have_name = FALSE; | |
463ee0b2 | 4677 | } |
4633a7c4 | 4678 | |
09bef843 SB |
4679 | if (key == KEY_format) { |
4680 | if (*s == '=') | |
4681 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4682 | if (have_name) | |
b1b65b59 JH |
4683 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4684 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4685 | OPERATOR(FORMAT); |
4686 | } | |
79072805 | 4687 | |
09bef843 SB |
4688 | /* Look for a prototype */ |
4689 | if (*s == '(') { | |
4690 | char *p; | |
4691 | ||
4692 | s = scan_str(s,FALSE,FALSE); | |
4693 | if (!s) { | |
4694 | if (PL_lex_stuff) | |
4695 | SvREFCNT_dec(PL_lex_stuff); | |
4696 | PL_lex_stuff = Nullsv; | |
4697 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4698 | } | |
4699 | /* strip spaces */ | |
4700 | d = SvPVX(PL_lex_stuff); | |
4701 | tmp = 0; | |
4702 | for (p = d; *p; ++p) { | |
4703 | if (!isSPACE(*p)) | |
4704 | d[tmp++] = *p; | |
4705 | } | |
4706 | d[tmp] = '\0'; | |
4707 | SvCUR(PL_lex_stuff) = tmp; | |
4708 | have_proto = TRUE; | |
68dc0745 | 4709 | |
09bef843 | 4710 | s = skipspace(s); |
4633a7c4 | 4711 | } |
09bef843 SB |
4712 | else |
4713 | have_proto = FALSE; | |
4714 | ||
4715 | if (*s == ':' && s[1] != ':') | |
4716 | PL_expect = attrful; | |
4717 | ||
4718 | if (have_proto) { | |
b1b65b59 JH |
4719 | PL_nextval[PL_nexttoke].opval = |
4720 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4721 | PL_lex_stuff = Nullsv; |
4722 | force_next(THING); | |
68dc0745 | 4723 | } |
09bef843 SB |
4724 | if (!have_name) { |
4725 | sv_setpv(PL_subname,"__ANON__"); | |
4726 | TOKEN(ANONSUB); | |
4633a7c4 | 4727 | } |
b1b65b59 JH |
4728 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4729 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4730 | if (key == KEY_my) |
4731 | TOKEN(MYSUB); | |
4732 | TOKEN(SUB); | |
4633a7c4 | 4733 | } |
79072805 LW |
4734 | |
4735 | case KEY_system: | |
4736 | set_csh(); | |
a0d0e21e | 4737 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4738 | |
4739 | case KEY_symlink: | |
a0d0e21e | 4740 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4741 | |
4742 | case KEY_syscall: | |
a0d0e21e | 4743 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4744 | |
c07a80fd | 4745 | case KEY_sysopen: |
4746 | LOP(OP_SYSOPEN,XTERM); | |
4747 | ||
137443ea | 4748 | case KEY_sysseek: |
4749 | LOP(OP_SYSSEEK,XTERM); | |
4750 | ||
79072805 | 4751 | case KEY_sysread: |
a0d0e21e | 4752 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4753 | |
4754 | case KEY_syswrite: | |
a0d0e21e | 4755 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4756 | |
4757 | case KEY_tr: | |
4758 | s = scan_trans(s); | |
4759 | TERM(sublex_start()); | |
4760 | ||
4761 | case KEY_tell: | |
4762 | UNI(OP_TELL); | |
4763 | ||
4764 | case KEY_telldir: | |
4765 | UNI(OP_TELLDIR); | |
4766 | ||
463ee0b2 | 4767 | case KEY_tie: |
a0d0e21e | 4768 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4769 | |
c07a80fd | 4770 | case KEY_tied: |
4771 | UNI(OP_TIED); | |
4772 | ||
79072805 LW |
4773 | case KEY_time: |
4774 | FUN0(OP_TIME); | |
4775 | ||
4776 | case KEY_times: | |
4777 | FUN0(OP_TMS); | |
4778 | ||
4779 | case KEY_truncate: | |
a0d0e21e | 4780 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4781 | |
4782 | case KEY_uc: | |
4783 | UNI(OP_UC); | |
4784 | ||
4785 | case KEY_ucfirst: | |
4786 | UNI(OP_UCFIRST); | |
4787 | ||
463ee0b2 LW |
4788 | case KEY_untie: |
4789 | UNI(OP_UNTIE); | |
4790 | ||
79072805 | 4791 | case KEY_until: |
57843af0 | 4792 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4793 | OPERATOR(UNTIL); |
4794 | ||
4795 | case KEY_unless: | |
57843af0 | 4796 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4797 | OPERATOR(UNLESS); |
4798 | ||
4799 | case KEY_unlink: | |
a0d0e21e | 4800 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4801 | |
4802 | case KEY_undef: | |
4803 | UNI(OP_UNDEF); | |
4804 | ||
4805 | case KEY_unpack: | |
a0d0e21e | 4806 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4807 | |
4808 | case KEY_utime: | |
a0d0e21e | 4809 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4810 | |
4811 | case KEY_umask: | |
599cee73 | 4812 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4813 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 JH |
4814 | if (*d != '0' && isDIGIT(*d)) |
4815 | Perl_warner(aTHX_ WARN_OCTAL, | |
4816 | "umask: argument is missing initial 0"); | |
748a9306 | 4817 | } |
79072805 LW |
4818 | UNI(OP_UMASK); |
4819 | ||
4820 | case KEY_unshift: | |
a0d0e21e LW |
4821 | LOP(OP_UNSHIFT,XTERM); |
4822 | ||
4823 | case KEY_use: | |
3280af22 | 4824 | if (PL_expect != XSTATE) |
a0d0e21e | 4825 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4826 | s = skipspace(s); |
a7cb1f99 | 4827 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4828 | s = force_version(s); |
a7cb1f99 | 4829 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4830 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4831 | force_next(WORD); |
4832 | } | |
4833 | } | |
4834 | else { | |
4835 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4836 | s = force_version(s); | |
4837 | } | |
a0d0e21e LW |
4838 | yylval.ival = 1; |
4839 | OPERATOR(USE); | |
79072805 LW |
4840 | |
4841 | case KEY_values: | |
4842 | UNI(OP_VALUES); | |
4843 | ||
4844 | case KEY_vec: | |
a0d0e21e | 4845 | LOP(OP_VEC,XTERM); |
79072805 LW |
4846 | |
4847 | case KEY_while: | |
57843af0 | 4848 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4849 | OPERATOR(WHILE); |
4850 | ||
4851 | case KEY_warn: | |
3280af22 | 4852 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4853 | LOP(OP_WARN,XTERM); |
79072805 LW |
4854 | |
4855 | case KEY_wait: | |
4856 | FUN0(OP_WAIT); | |
4857 | ||
4858 | case KEY_waitpid: | |
a0d0e21e | 4859 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4860 | |
4861 | case KEY_wantarray: | |
4862 | FUN0(OP_WANTARRAY); | |
4863 | ||
4864 | case KEY_write: | |
9d116dd7 JH |
4865 | #ifdef EBCDIC |
4866 | { | |
4867 | static char ctl_l[2]; | |
4868 | ||
4869 | if (ctl_l[0] == '\0') | |
4870 | ctl_l[0] = toCTRL('L'); | |
4871 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4872 | } | |
4873 | #else | |
4874 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4875 | #endif | |
79072805 LW |
4876 | UNI(OP_ENTERWRITE); |
4877 | ||
4878 | case KEY_x: | |
3280af22 | 4879 | if (PL_expect == XOPERATOR) |
79072805 LW |
4880 | Mop(OP_REPEAT); |
4881 | check_uni(); | |
4882 | goto just_a_word; | |
4883 | ||
a0d0e21e LW |
4884 | case KEY_xor: |
4885 | yylval.ival = OP_XOR; | |
4886 | OPERATOR(OROP); | |
4887 | ||
79072805 LW |
4888 | case KEY_y: |
4889 | s = scan_trans(s); | |
4890 | TERM(sublex_start()); | |
4891 | } | |
49dc05e3 | 4892 | }} |
79072805 LW |
4893 | } |
4894 | ||
4895 | I32 | |
864dbfa3 | 4896 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4897 | { |
4898 | switch (*d) { | |
4899 | case '_': | |
4900 | if (d[1] == '_') { | |
a0d0e21e | 4901 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4902 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4903 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4904 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4905 | if (strEQ(d,"__END__")) return KEY___END__; |
4906 | } | |
4907 | break; | |
8990e307 LW |
4908 | case 'A': |
4909 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4910 | break; | |
79072805 | 4911 | case 'a': |
463ee0b2 LW |
4912 | switch (len) { |
4913 | case 3: | |
a0d0e21e LW |
4914 | if (strEQ(d,"and")) return -KEY_and; |
4915 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4916 | break; |
463ee0b2 | 4917 | case 5: |
a0d0e21e LW |
4918 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4919 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4920 | break; |
4921 | case 6: | |
a0d0e21e | 4922 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4923 | break; |
4924 | } | |
79072805 LW |
4925 | break; |
4926 | case 'B': | |
4927 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4928 | break; |
79072805 | 4929 | case 'b': |
a0d0e21e LW |
4930 | if (strEQ(d,"bless")) return -KEY_bless; |
4931 | if (strEQ(d,"bind")) return -KEY_bind; | |
4932 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4933 | break; | |
4934 | case 'C': | |
4935 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 4936 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
4937 | break; |
4938 | case 'c': | |
4939 | switch (len) { | |
4940 | case 3: | |
a0d0e21e LW |
4941 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4942 | if (strEQ(d,"chr")) return -KEY_chr; | |
4943 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4944 | break; |
4945 | case 4: | |
4946 | if (strEQ(d,"chop")) return KEY_chop; | |
4947 | break; | |
4948 | case 5: | |
a0d0e21e LW |
4949 | if (strEQ(d,"close")) return -KEY_close; |
4950 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4951 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4952 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4953 | if (strEQ(d,"chown")) return -KEY_chown; | |
4954 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4955 | break; |
4956 | case 6: | |
a0d0e21e LW |
4957 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4958 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4959 | break; |
4960 | case 7: | |
a0d0e21e | 4961 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4962 | break; |
4963 | case 8: | |
a0d0e21e LW |
4964 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4965 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4966 | break; |
4967 | } | |
4968 | break; | |
ed6116ce LW |
4969 | case 'D': |
4970 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4971 | break; | |
79072805 LW |
4972 | case 'd': |
4973 | switch (len) { | |
4974 | case 2: | |
4975 | if (strEQ(d,"do")) return KEY_do; | |
4976 | break; | |
4977 | case 3: | |
a0d0e21e | 4978 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4979 | break; |
4980 | case 4: | |
a0d0e21e | 4981 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4982 | break; |
4983 | case 6: | |
4984 | if (strEQ(d,"delete")) return KEY_delete; | |
4985 | break; | |
4986 | case 7: | |
4987 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4988 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4989 | break; |
4990 | case 8: | |
a0d0e21e | 4991 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4992 | break; |
4993 | } | |
4994 | break; | |
4995 | case 'E': | |
a0d0e21e | 4996 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4997 | if (strEQ(d,"END")) return KEY_END; |
4998 | break; | |
4999 | case 'e': | |
5000 | switch (len) { | |
5001 | case 2: | |
a0d0e21e | 5002 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5003 | break; |
5004 | case 3: | |
a0d0e21e LW |
5005 | if (strEQ(d,"eof")) return -KEY_eof; |
5006 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
5007 | break; |
5008 | case 4: | |
5009 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5010 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5011 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5012 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
5013 | if (strEQ(d,"each")) return KEY_each; |
5014 | break; | |
5015 | case 5: | |
5016 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5017 | break; | |
a0d0e21e LW |
5018 | case 6: |
5019 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 5020 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 5021 | break; |
79072805 | 5022 | case 8: |
a0d0e21e LW |
5023 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5024 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5025 | break; |
5026 | case 9: | |
a0d0e21e | 5027 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5028 | break; |
5029 | case 10: | |
a0d0e21e LW |
5030 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5031 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5032 | break; |
5033 | case 11: | |
a0d0e21e | 5034 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5035 | break; |
a687059c | 5036 | } |
a687059c | 5037 | break; |
79072805 LW |
5038 | case 'f': |
5039 | switch (len) { | |
5040 | case 3: | |
5041 | if (strEQ(d,"for")) return KEY_for; | |
5042 | break; | |
5043 | case 4: | |
a0d0e21e | 5044 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5045 | break; |
5046 | case 5: | |
a0d0e21e LW |
5047 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5048 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5049 | break; |
5050 | case 6: | |
5051 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5052 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5053 | break; |
5054 | case 7: | |
5055 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5056 | break; | |
5057 | case 8: | |
a0d0e21e | 5058 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5059 | break; |
378cc40b | 5060 | } |
a687059c | 5061 | break; |
79072805 LW |
5062 | case 'G': |
5063 | if (len == 2) { | |
a0d0e21e LW |
5064 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5065 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5066 | } |
a687059c | 5067 | break; |
79072805 | 5068 | case 'g': |
a687059c LW |
5069 | if (strnEQ(d,"get",3)) { |
5070 | d += 3; | |
5071 | if (*d == 'p') { | |
79072805 LW |
5072 | switch (len) { |
5073 | case 7: | |
a0d0e21e LW |
5074 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5075 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5076 | break; |
5077 | case 8: | |
a0d0e21e LW |
5078 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5079 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5080 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5081 | break; |
5082 | case 11: | |
a0d0e21e LW |
5083 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5084 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5085 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5086 | break; |
5087 | case 14: | |
a0d0e21e | 5088 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5089 | break; |
5090 | case 16: | |
a0d0e21e | 5091 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5092 | break; |
5093 | } | |
a687059c LW |
5094 | } |
5095 | else if (*d == 'h') { | |
a0d0e21e LW |
5096 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5097 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5098 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5099 | } |
5100 | else if (*d == 'n') { | |
a0d0e21e LW |
5101 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5102 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5103 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5104 | } |
5105 | else if (*d == 's') { | |
a0d0e21e LW |
5106 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5107 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5108 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5109 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5110 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5111 | } |
5112 | else if (*d == 'g') { | |
a0d0e21e LW |
5113 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5114 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5115 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5116 | } |
5117 | else if (*d == 'l') { | |
a0d0e21e | 5118 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5119 | } |
a0d0e21e | 5120 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5121 | break; |
a687059c | 5122 | } |
79072805 LW |
5123 | switch (len) { |
5124 | case 2: | |
a0d0e21e LW |
5125 | if (strEQ(d,"gt")) return -KEY_gt; |
5126 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5127 | break; |
5128 | case 4: | |
5129 | if (strEQ(d,"grep")) return KEY_grep; | |
5130 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5131 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5132 | break; |
5133 | case 6: | |
a0d0e21e | 5134 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5135 | break; |
378cc40b | 5136 | } |
a687059c | 5137 | break; |
79072805 | 5138 | case 'h': |
a0d0e21e | 5139 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5140 | break; |
7d07dbc2 MB |
5141 | case 'I': |
5142 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5143 | break; | |
79072805 LW |
5144 | case 'i': |
5145 | switch (len) { | |
5146 | case 2: | |
5147 | if (strEQ(d,"if")) return KEY_if; | |
5148 | break; | |
5149 | case 3: | |
a0d0e21e | 5150 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5151 | break; |
5152 | case 5: | |
a0d0e21e LW |
5153 | if (strEQ(d,"index")) return -KEY_index; |
5154 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5155 | break; |
5156 | } | |
a687059c | 5157 | break; |
79072805 | 5158 | case 'j': |
a0d0e21e | 5159 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5160 | break; |
79072805 LW |
5161 | case 'k': |
5162 | if (len == 4) { | |
5163 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5164 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5165 | } |
79072805 LW |
5166 | break; |
5167 | case 'L': | |
5168 | if (len == 2) { | |
a0d0e21e LW |
5169 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5170 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5171 | } |
79072805 LW |
5172 | break; |
5173 | case 'l': | |
5174 | switch (len) { | |
5175 | case 2: | |
a0d0e21e LW |
5176 | if (strEQ(d,"lt")) return -KEY_lt; |
5177 | if (strEQ(d,"le")) return -KEY_le; | |
5178 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5179 | break; |
5180 | case 3: | |
a0d0e21e | 5181 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5182 | break; |
5183 | case 4: | |
5184 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5185 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5186 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5187 | break; |
79072805 LW |
5188 | case 5: |
5189 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5190 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5191 | break; |
5192 | case 6: | |
a0d0e21e LW |
5193 | if (strEQ(d,"length")) return -KEY_length; |
5194 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5195 | break; |
5196 | case 7: | |
a0d0e21e | 5197 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5198 | break; |
5199 | case 9: | |
a0d0e21e | 5200 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5201 | break; |
5202 | } | |
a687059c | 5203 | break; |
79072805 LW |
5204 | case 'm': |
5205 | switch (len) { | |
5206 | case 1: return KEY_m; | |
93a17b20 LW |
5207 | case 2: |
5208 | if (strEQ(d,"my")) return KEY_my; | |
5209 | break; | |
a0d0e21e LW |
5210 | case 3: |
5211 | if (strEQ(d,"map")) return KEY_map; | |
5212 | break; | |
79072805 | 5213 | case 5: |
a0d0e21e | 5214 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5215 | break; |
5216 | case 6: | |
a0d0e21e LW |
5217 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5218 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5219 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5220 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5221 | break; |
5222 | } | |
a687059c | 5223 | break; |
79072805 | 5224 | case 'N': |
a0d0e21e | 5225 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5226 | break; |
79072805 LW |
5227 | case 'n': |
5228 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5229 | if (strEQ(d,"ne")) return -KEY_ne; |
5230 | if (strEQ(d,"not")) return -KEY_not; | |
5231 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5232 | break; |
79072805 LW |
5233 | case 'o': |
5234 | switch (len) { | |
463ee0b2 | 5235 | case 2: |
a0d0e21e | 5236 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5237 | break; |
79072805 | 5238 | case 3: |
a0d0e21e LW |
5239 | if (strEQ(d,"ord")) return -KEY_ord; |
5240 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5241 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5242 | break; |
5243 | case 4: | |
a0d0e21e | 5244 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5245 | break; |
5246 | case 7: | |
a0d0e21e | 5247 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5248 | break; |
fe14fcc3 | 5249 | } |
a687059c | 5250 | break; |
79072805 LW |
5251 | case 'p': |
5252 | switch (len) { | |
5253 | case 3: | |
5254 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5255 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5256 | break; |
5257 | case 4: | |
5258 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5259 | if (strEQ(d,"pack")) return -KEY_pack; |
5260 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5261 | break; |
5262 | case 5: | |
5263 | if (strEQ(d,"print")) return KEY_print; | |
5264 | break; | |
5265 | case 6: | |
5266 | if (strEQ(d,"printf")) return KEY_printf; | |
5267 | break; | |
5268 | case 7: | |
5269 | if (strEQ(d,"package")) return KEY_package; | |
5270 | break; | |
c07a80fd | 5271 | case 9: |
5272 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5273 | } |
79072805 LW |
5274 | break; |
5275 | case 'q': | |
5276 | if (len <= 2) { | |
5277 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5278 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5279 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5280 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5281 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5282 | } |
a0d0e21e | 5283 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5284 | break; |
5285 | case 'r': | |
5286 | switch (len) { | |
5287 | case 3: | |
a0d0e21e | 5288 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5289 | break; |
5290 | case 4: | |
a0d0e21e LW |
5291 | if (strEQ(d,"read")) return -KEY_read; |
5292 | if (strEQ(d,"rand")) return -KEY_rand; | |
5293 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5294 | if (strEQ(d,"redo")) return KEY_redo; |
5295 | break; | |
5296 | case 5: | |
a0d0e21e LW |
5297 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5298 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5299 | break; |
5300 | case 6: | |
5301 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5302 | if (strEQ(d,"rename")) return -KEY_rename; |
5303 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5304 | break; |
5305 | case 7: | |
a0d0e21e LW |
5306 | if (strEQ(d,"require")) return -KEY_require; |
5307 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5308 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5309 | break; |
5310 | case 8: | |
a0d0e21e LW |
5311 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5312 | if (strEQ(d,"readline")) return -KEY_readline; | |
5313 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5314 | break; |
5315 | case 9: | |
a0d0e21e | 5316 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5317 | break; |
a687059c | 5318 | } |
79072805 LW |
5319 | break; |
5320 | case 's': | |
a687059c | 5321 | switch (d[1]) { |
79072805 | 5322 | case 0: return KEY_s; |
a687059c | 5323 | case 'c': |
79072805 | 5324 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5325 | break; |
5326 | case 'e': | |
79072805 LW |
5327 | switch (len) { |
5328 | case 4: | |
a0d0e21e LW |
5329 | if (strEQ(d,"seek")) return -KEY_seek; |
5330 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5331 | break; |
5332 | case 5: | |
a0d0e21e | 5333 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5334 | break; |
5335 | case 6: | |
a0d0e21e LW |
5336 | if (strEQ(d,"select")) return -KEY_select; |
5337 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5338 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5339 | break; |
5340 | case 7: | |
a0d0e21e LW |
5341 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5342 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5343 | break; |
5344 | case 8: | |
a0d0e21e LW |
5345 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5346 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5347 | break; |
5348 | case 9: | |
a0d0e21e | 5349 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5350 | break; |
5351 | case 10: | |
a0d0e21e LW |
5352 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5353 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5354 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5355 | break; |
5356 | case 11: | |
a0d0e21e LW |
5357 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5358 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5359 | break; |
5360 | } | |
a687059c LW |
5361 | break; |
5362 | case 'h': | |
79072805 LW |
5363 | switch (len) { |
5364 | case 5: | |
5365 | if (strEQ(d,"shift")) return KEY_shift; | |
5366 | break; | |
5367 | case 6: | |
a0d0e21e LW |
5368 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5369 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5370 | break; |
5371 | case 7: | |
a0d0e21e | 5372 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5373 | break; |
5374 | case 8: | |
a0d0e21e LW |
5375 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5376 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5377 | break; |
5378 | } | |
a687059c LW |
5379 | break; |
5380 | case 'i': | |
a0d0e21e | 5381 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5382 | break; |
5383 | case 'l': | |
a0d0e21e | 5384 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5385 | break; |
5386 | case 'o': | |
79072805 | 5387 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5388 | if (strEQ(d,"socket")) return -KEY_socket; |
5389 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5390 | break; |
5391 | case 'p': | |
79072805 | 5392 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5393 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5394 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5395 | break; |
5396 | case 'q': | |
a0d0e21e | 5397 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5398 | break; |
5399 | case 'r': | |
a0d0e21e | 5400 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5401 | break; |
5402 | case 't': | |
a0d0e21e | 5403 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5404 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5405 | break; |
5406 | case 'u': | |
a0d0e21e | 5407 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5408 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5409 | break; |
5410 | case 'y': | |
79072805 LW |
5411 | switch (len) { |
5412 | case 6: | |
a0d0e21e | 5413 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5414 | break; |
5415 | case 7: | |
a0d0e21e LW |
5416 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5417 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5418 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5419 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5420 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5421 | break; |
5422 | case 8: | |
a0d0e21e | 5423 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5424 | break; |
a687059c | 5425 | } |
a687059c LW |
5426 | break; |
5427 | } | |
5428 | break; | |
79072805 LW |
5429 | case 't': |
5430 | switch (len) { | |
5431 | case 2: | |
5432 | if (strEQ(d,"tr")) return KEY_tr; | |
5433 | break; | |
463ee0b2 LW |
5434 | case 3: |
5435 | if (strEQ(d,"tie")) return KEY_tie; | |
5436 | break; | |
79072805 | 5437 | case 4: |
a0d0e21e | 5438 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5439 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5440 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5441 | break; |
5442 | case 5: | |
a0d0e21e | 5443 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5444 | break; |
5445 | case 7: | |
a0d0e21e | 5446 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5447 | break; |
5448 | case 8: | |
a0d0e21e | 5449 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5450 | break; |
378cc40b | 5451 | } |
a687059c | 5452 | break; |
79072805 LW |
5453 | case 'u': |
5454 | switch (len) { | |
5455 | case 2: | |
a0d0e21e LW |
5456 | if (strEQ(d,"uc")) return -KEY_uc; |
5457 | break; | |
5458 | case 3: | |
5459 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5460 | break; |
5461 | case 5: | |
5462 | if (strEQ(d,"undef")) return KEY_undef; | |
5463 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5464 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5465 | if (strEQ(d,"utime")) return -KEY_utime; |
5466 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5467 | break; |
5468 | case 6: | |
5469 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5470 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5471 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5472 | break; |
5473 | case 7: | |
5474 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5475 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5476 | break; |
a687059c LW |
5477 | } |
5478 | break; | |
79072805 | 5479 | case 'v': |
a0d0e21e LW |
5480 | if (strEQ(d,"values")) return -KEY_values; |
5481 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5482 | break; |
79072805 LW |
5483 | case 'w': |
5484 | switch (len) { | |
5485 | case 4: | |
a0d0e21e LW |
5486 | if (strEQ(d,"warn")) return -KEY_warn; |
5487 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5488 | break; |
5489 | case 5: | |
5490 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5491 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5492 | break; |
5493 | case 7: | |
a0d0e21e | 5494 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5495 | break; |
5496 | case 9: | |
a0d0e21e | 5497 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5498 | break; |
2f3197b3 | 5499 | } |
a687059c | 5500 | break; |
79072805 | 5501 | case 'x': |
a0d0e21e LW |
5502 | if (len == 1) return -KEY_x; |
5503 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5504 | break; |
79072805 LW |
5505 | case 'y': |
5506 | if (len == 1) return KEY_y; | |
5507 | break; | |
5508 | case 'z': | |
a687059c LW |
5509 | break; |
5510 | } | |
79072805 | 5511 | return 0; |
a687059c LW |
5512 | } |
5513 | ||
76e3520e | 5514 | STATIC void |
cea2e8a9 | 5515 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5516 | { |
2f3197b3 LW |
5517 | char *w; |
5518 | ||
d008e5eb GS |
5519 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5520 | dTHR; /* only for ckWARN */ | |
5521 | if (ckWARN(WARN_SYNTAX)) { | |
5522 | int level = 1; | |
5523 | for (w = s+2; *w && level; w++) { | |
5524 | if (*w == '(') | |
5525 | ++level; | |
5526 | else if (*w == ')') | |
5527 | --level; | |
5528 | } | |
5529 | if (*w) | |
5530 | for (; *w && isSPACE(*w); w++) ; | |
5531 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5532 | Perl_warner(aTHX_ WARN_SYNTAX, |
5533 | "%s (...) interpreted as function",name); | |
d008e5eb | 5534 | } |
2f3197b3 | 5535 | } |
3280af22 | 5536 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5537 | s++; |
a687059c LW |
5538 | if (*s == '(') |
5539 | s++; | |
3280af22 | 5540 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5541 | s++; |
7e2040f0 | 5542 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 5543 | w = s++; |
7e2040f0 | 5544 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 5545 | s++; |
3280af22 | 5546 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5547 | s++; |
e929a76b | 5548 | if (*s == ',') { |
463ee0b2 | 5549 | int kw; |
e929a76b | 5550 | *s = '\0'; |
864dbfa3 | 5551 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5552 | *s = ','; |
463ee0b2 | 5553 | if (kw) |
e929a76b | 5554 | return; |
cea2e8a9 | 5555 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5556 | } |
5557 | } | |
5558 | } | |
5559 | ||
423cee85 JH |
5560 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5561 | Best used as sv=new_constant(..., sv, ...). | |
5562 | If s, pv are NULL, calls subroutine with one argument, | |
5563 | and type is used with error messages only. */ | |
5564 | ||
b3ac6de7 | 5565 | STATIC SV * |
dff6d3cd GS |
5566 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
5567 | const char *type) | |
b3ac6de7 | 5568 | { |
b3ac6de7 | 5569 | dSP; |
3280af22 | 5570 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5571 | SV *res; |
b3ac6de7 IZ |
5572 | SV **cvp; |
5573 | SV *cv, *typesv; | |
dff6d3cd | 5574 | const char *why, *why1, *why2; |
423cee85 JH |
5575 | |
5576 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5577 | SV *msg; | |
5578 | ||
5579 | why = "%^H is not localized"; | |
5580 | report_short: | |
5581 | why1 = why2 = ""; | |
5582 | report: | |
5583 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5584 | (type ? type: "undef"), why1, why2, why); | |
5585 | yyerror(SvPVX(msg)); | |
5586 | SvREFCNT_dec(msg); | |
5587 | return sv; | |
5588 | } | |
b3ac6de7 | 5589 | if (!table) { |
423cee85 JH |
5590 | why = "%^H is not defined"; |
5591 | goto report_short; | |
b3ac6de7 IZ |
5592 | } |
5593 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5594 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5595 | why = "} is not defined"; |
5596 | why1 = "$^H{"; | |
5597 | why2 = key; | |
5598 | goto report; | |
b3ac6de7 IZ |
5599 | } |
5600 | sv_2mortal(sv); /* Parent created it permanently */ | |
5601 | cv = *cvp; | |
423cee85 JH |
5602 | if (!pv && s) |
5603 | pv = sv_2mortal(newSVpvn(s, len)); | |
5604 | if (type && pv) | |
5605 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5606 | else |
423cee85 JH |
5607 | typesv = &PL_sv_undef; |
5608 | ||
e788e7d3 | 5609 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5610 | ENTER ; |
5611 | SAVETMPS; | |
5612 | ||
5613 | PUSHMARK(SP) ; | |
25eaa213 | 5614 | EXTEND(sp, 4); |
423cee85 JH |
5615 | if (pv) |
5616 | PUSHs(pv); | |
b3ac6de7 | 5617 | PUSHs(sv); |
423cee85 JH |
5618 | if (pv) |
5619 | PUSHs(typesv); | |
b3ac6de7 IZ |
5620 | PUSHs(cv); |
5621 | PUTBACK; | |
423cee85 JH |
5622 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5623 | ||
5624 | SPAGAIN ; | |
5625 | ||
5626 | /* Check the eval first */ | |
5627 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5628 | { | |
5629 | STRLEN n_a; | |
5630 | sv_catpv(ERRSV, "Propagated"); | |
5631 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5632 | (void)POPs; |
423cee85 JH |
5633 | res = SvREFCNT_inc(sv); |
5634 | } | |
5635 | else { | |
5636 | res = POPs; | |
e1f15930 | 5637 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5638 | } |
5639 | ||
5640 | PUTBACK ; | |
5641 | FREETMPS ; | |
5642 | LEAVE ; | |
b3ac6de7 | 5643 | POPSTACK; |
423cee85 | 5644 | |
b3ac6de7 | 5645 | if (!SvOK(res)) { |
423cee85 JH |
5646 | why = "}} did not return a defined value"; |
5647 | why1 = "Call to &{$^H{"; | |
5648 | why2 = key; | |
5649 | sv = res; | |
5650 | goto report; | |
5651 | } | |
5652 | ||
5653 | return res; | |
b3ac6de7 | 5654 | } |
423cee85 | 5655 | |
76e3520e | 5656 | STATIC char * |
cea2e8a9 | 5657 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5658 | { |
5659 | register char *d = dest; | |
8903cb82 | 5660 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5661 | for (;;) { |
8903cb82 | 5662 | if (d >= e) |
cea2e8a9 | 5663 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5664 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5665 | *d++ = *s++; |
7e2040f0 | 5666 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5667 | *d++ = ':'; |
5668 | *d++ = ':'; | |
5669 | s++; | |
5670 | } | |
c3e0f903 | 5671 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5672 | *d++ = *s++; |
5673 | *d++ = *s++; | |
5674 | } | |
834a4ddd | 5675 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5676 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5677 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5678 | t += UTF8SKIP(t); |
5679 | if (d + (t - s) > e) | |
cea2e8a9 | 5680 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5681 | Copy(s, d, t - s, char); |
5682 | d += t - s; | |
5683 | s = t; | |
5684 | } | |
463ee0b2 LW |
5685 | else { |
5686 | *d = '\0'; | |
5687 | *slp = d - dest; | |
5688 | return s; | |
e929a76b | 5689 | } |
378cc40b LW |
5690 | } |
5691 | } | |
5692 | ||
76e3520e | 5693 | STATIC char * |
cea2e8a9 | 5694 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5695 | { |
5696 | register char *d; | |
8903cb82 | 5697 | register char *e; |
79072805 | 5698 | char *bracket = 0; |
748a9306 | 5699 | char funny = *s++; |
378cc40b | 5700 | |
a0d0e21e LW |
5701 | if (isSPACE(*s)) |
5702 | s = skipspace(s); | |
378cc40b | 5703 | d = dest; |
8903cb82 | 5704 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5705 | if (isDIGIT(*s)) { |
8903cb82 | 5706 | while (isDIGIT(*s)) { |
5707 | if (d >= e) | |
cea2e8a9 | 5708 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5709 | *d++ = *s++; |
8903cb82 | 5710 | } |
378cc40b LW |
5711 | } |
5712 | else { | |
463ee0b2 | 5713 | for (;;) { |
8903cb82 | 5714 | if (d >= e) |
cea2e8a9 | 5715 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5716 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5717 | *d++ = *s++; |
7e2040f0 | 5718 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
5719 | *d++ = ':'; |
5720 | *d++ = ':'; | |
5721 | s++; | |
5722 | } | |
a0d0e21e | 5723 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5724 | *d++ = *s++; |
5725 | *d++ = *s++; | |
5726 | } | |
834a4ddd | 5727 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5728 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5729 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5730 | t += UTF8SKIP(t); |
5731 | if (d + (t - s) > e) | |
cea2e8a9 | 5732 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5733 | Copy(s, d, t - s, char); |
5734 | d += t - s; | |
5735 | s = t; | |
5736 | } | |
463ee0b2 LW |
5737 | else |
5738 | break; | |
5739 | } | |
378cc40b LW |
5740 | } |
5741 | *d = '\0'; | |
5742 | d = dest; | |
79072805 | 5743 | if (*d) { |
3280af22 NIS |
5744 | if (PL_lex_state != LEX_NORMAL) |
5745 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5746 | return s; |
378cc40b | 5747 | } |
748a9306 | 5748 | if (*s == '$' && s[1] && |
7e2040f0 | 5749 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5750 | { |
4810e5ec | 5751 | return s; |
5cd24f17 | 5752 | } |
79072805 LW |
5753 | if (*s == '{') { |
5754 | bracket = s; | |
5755 | s++; | |
5756 | } | |
5757 | else if (ck_uni) | |
5758 | check_uni(); | |
93a17b20 | 5759 | if (s < send) |
79072805 LW |
5760 | *d = *s++; |
5761 | d[1] = '\0'; | |
2b92dfce | 5762 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5763 | *d = toCTRL(*s); |
5764 | s++; | |
de3bb511 | 5765 | } |
79072805 | 5766 | if (bracket) { |
748a9306 | 5767 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5768 | while (s < send) { |
5769 | char ch = *s++; | |
5770 | if (ch != ' ' && ch != '\t') { | |
5771 | *d = ch; | |
5772 | break; | |
5773 | } | |
5774 | } | |
748a9306 | 5775 | } |
7e2040f0 | 5776 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 5777 | d++; |
a0ed51b3 LW |
5778 | if (UTF) { |
5779 | e = s; | |
7e2040f0 | 5780 | while (e < send && isALNUM_lazy_if(e,UTF) || *e == ':') { |
a0ed51b3 | 5781 | e += UTF8SKIP(e); |
dfe13c55 | 5782 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5783 | e += UTF8SKIP(e); |
5784 | } | |
5785 | Copy(s, d, e - s, char); | |
5786 | d += e - s; | |
5787 | s = e; | |
5788 | } | |
5789 | else { | |
2b92dfce | 5790 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5791 | *d++ = *s++; |
2b92dfce | 5792 | if (d >= e) |
cea2e8a9 | 5793 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5794 | } |
79072805 | 5795 | *d = '\0'; |
748a9306 | 5796 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5797 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5798 | dTHR; /* only for ckWARN */ |
599cee73 | 5799 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5800 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5801 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5802 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5803 | funny, dest, brack, funny, dest, brack); |
5804 | } | |
79072805 | 5805 | bracket++; |
a0be28da | 5806 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5807 | return s; |
5808 | } | |
2b92dfce GS |
5809 | } |
5810 | /* Handle extended ${^Foo} variables | |
5811 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5812 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5813 | && isALNUM(*s)) | |
5814 | { | |
5815 | d++; | |
5816 | while (isALNUM(*s) && d < e) { | |
5817 | *d++ = *s++; | |
5818 | } | |
5819 | if (d >= e) | |
cea2e8a9 | 5820 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5821 | *d = '\0'; |
79072805 LW |
5822 | } |
5823 | if (*s == '}') { | |
5824 | s++; | |
3280af22 NIS |
5825 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5826 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5827 | if (funny == '#') |
5828 | funny = '@'; | |
d008e5eb GS |
5829 | if (PL_lex_state == LEX_NORMAL) { |
5830 | dTHR; /* only for ckWARN */ | |
5831 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5832 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5833 | { |
cea2e8a9 | 5834 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5835 | "Ambiguous use of %c{%s} resolved to %c%s", |
5836 | funny, dest, funny, dest); | |
5837 | } | |
5838 | } | |
79072805 LW |
5839 | } |
5840 | else { | |
5841 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5842 | *dest = '\0'; |
79072805 LW |
5843 | } |
5844 | } | |
3280af22 NIS |
5845 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5846 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5847 | return s; |
5848 | } | |
5849 | ||
cea2e8a9 GS |
5850 | void |
5851 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5852 | { |
bbce6d69 | 5853 | if (ch == 'i') |
a0d0e21e | 5854 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5855 | else if (ch == 'g') |
5856 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5857 | else if (ch == 'c') |
5858 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5859 | else if (ch == 'o') |
5860 | *pmfl |= PMf_KEEP; | |
5861 | else if (ch == 'm') | |
5862 | *pmfl |= PMf_MULTILINE; | |
5863 | else if (ch == 's') | |
5864 | *pmfl |= PMf_SINGLELINE; | |
5865 | else if (ch == 'x') | |
5866 | *pmfl |= PMf_EXTENDED; | |
5867 | } | |
378cc40b | 5868 | |
76e3520e | 5869 | STATIC char * |
cea2e8a9 | 5870 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5871 | { |
79072805 LW |
5872 | PMOP *pm; |
5873 | char *s; | |
378cc40b | 5874 | |
09bef843 | 5875 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5876 | if (!s) { |
3280af22 NIS |
5877 | if (PL_lex_stuff) |
5878 | SvREFCNT_dec(PL_lex_stuff); | |
5879 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5880 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5881 | } |
bbce6d69 | 5882 | |
8782bef2 | 5883 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5884 | if (PL_multi_open == '?') |
79072805 | 5885 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5886 | if(type == OP_QR) { |
5887 | while (*s && strchr("iomsx", *s)) | |
5888 | pmflag(&pm->op_pmflags,*s++); | |
5889 | } | |
5890 | else { | |
5891 | while (*s && strchr("iogcmsx", *s)) | |
5892 | pmflag(&pm->op_pmflags,*s++); | |
5893 | } | |
4633a7c4 | 5894 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5895 | |
3280af22 | 5896 | PL_lex_op = (OP*)pm; |
79072805 | 5897 | yylval.ival = OP_MATCH; |
378cc40b LW |
5898 | return s; |
5899 | } | |
5900 | ||
76e3520e | 5901 | STATIC char * |
cea2e8a9 | 5902 | S_scan_subst(pTHX_ char *start) |
79072805 | 5903 | { |
a0d0e21e | 5904 | register char *s; |
79072805 | 5905 | register PMOP *pm; |
4fdae800 | 5906 | I32 first_start; |
79072805 LW |
5907 | I32 es = 0; |
5908 | ||
79072805 LW |
5909 | yylval.ival = OP_NULL; |
5910 | ||
09bef843 | 5911 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5912 | |
5913 | if (!s) { | |
3280af22 NIS |
5914 | if (PL_lex_stuff) |
5915 | SvREFCNT_dec(PL_lex_stuff); | |
5916 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5917 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5918 | } |
79072805 | 5919 | |
3280af22 | 5920 | if (s[-1] == PL_multi_open) |
79072805 LW |
5921 | s--; |
5922 | ||
3280af22 | 5923 | first_start = PL_multi_start; |
09bef843 | 5924 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5925 | if (!s) { |
3280af22 NIS |
5926 | if (PL_lex_stuff) |
5927 | SvREFCNT_dec(PL_lex_stuff); | |
5928 | PL_lex_stuff = Nullsv; | |
5929 | if (PL_lex_repl) | |
5930 | SvREFCNT_dec(PL_lex_repl); | |
5931 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5932 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 5933 | } |
3280af22 | 5934 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5935 | |
79072805 | 5936 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5937 | while (*s) { |
a687059c LW |
5938 | if (*s == 'e') { |
5939 | s++; | |
2f3197b3 | 5940 | es++; |
a687059c | 5941 | } |
b3eb6a9b | 5942 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5943 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5944 | else |
5945 | break; | |
378cc40b | 5946 | } |
79072805 LW |
5947 | |
5948 | if (es) { | |
5949 | SV *repl; | |
0244c3a4 GS |
5950 | PL_sublex_info.super_bufptr = s; |
5951 | PL_sublex_info.super_bufend = PL_bufend; | |
5952 | PL_multi_end = 0; | |
79072805 | 5953 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 5954 | repl = newSVpvn("",0); |
463ee0b2 | 5955 | while (es-- > 0) |
a0d0e21e | 5956 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5957 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5958 | sv_catsv(repl, PL_lex_repl); |
79072805 | 5959 | sv_catpvn(repl, " };", 2); |
25da4f38 | 5960 | SvEVALED_on(repl); |
3280af22 NIS |
5961 | SvREFCNT_dec(PL_lex_repl); |
5962 | PL_lex_repl = repl; | |
378cc40b | 5963 | } |
79072805 | 5964 | |
4633a7c4 | 5965 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5966 | PL_lex_op = (OP*)pm; |
79072805 | 5967 | yylval.ival = OP_SUBST; |
378cc40b LW |
5968 | return s; |
5969 | } | |
5970 | ||
76e3520e | 5971 | STATIC char * |
cea2e8a9 | 5972 | S_scan_trans(pTHX_ char *start) |
378cc40b | 5973 | { |
a0d0e21e | 5974 | register char* s; |
11343788 | 5975 | OP *o; |
79072805 LW |
5976 | short *tbl; |
5977 | I32 squash; | |
a0ed51b3 | 5978 | I32 del; |
79072805 | 5979 | I32 complement; |
a0ed51b3 LW |
5980 | I32 utf8; |
5981 | I32 count = 0; | |
79072805 LW |
5982 | |
5983 | yylval.ival = OP_NULL; | |
5984 | ||
09bef843 | 5985 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5986 | if (!s) { |
3280af22 NIS |
5987 | if (PL_lex_stuff) |
5988 | SvREFCNT_dec(PL_lex_stuff); | |
5989 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5990 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 5991 | } |
3280af22 | 5992 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5993 | s--; |
5994 | ||
09bef843 | 5995 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5996 | if (!s) { |
3280af22 NIS |
5997 | if (PL_lex_stuff) |
5998 | SvREFCNT_dec(PL_lex_stuff); | |
5999 | PL_lex_stuff = Nullsv; | |
6000 | if (PL_lex_repl) | |
6001 | SvREFCNT_dec(PL_lex_repl); | |
6002 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 6003 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6004 | } |
79072805 | 6005 | |
a0ed51b3 LW |
6006 | if (UTF) { |
6007 | o = newSVOP(OP_TRANS, 0, 0); | |
6008 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
6009 | } | |
6010 | else { | |
6011 | New(803,tbl,256,short); | |
6012 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
6013 | utf8 = 0; | |
6014 | } | |
2f3197b3 | 6015 | |
a0ed51b3 LW |
6016 | complement = del = squash = 0; |
6017 | while (strchr("cdsCU", *s)) { | |
395c3793 | 6018 | if (*s == 'c') |
79072805 | 6019 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6020 | else if (*s == 'd') |
a0ed51b3 LW |
6021 | del = OPpTRANS_DELETE; |
6022 | else if (*s == 's') | |
79072805 | 6023 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
6024 | else { |
6025 | switch (count++) { | |
6026 | case 0: | |
6027 | if (*s == 'C') | |
6028 | utf8 &= ~OPpTRANS_FROM_UTF; | |
6029 | else | |
6030 | utf8 |= OPpTRANS_FROM_UTF; | |
6031 | break; | |
6032 | case 1: | |
6033 | if (*s == 'C') | |
6034 | utf8 &= ~OPpTRANS_TO_UTF; | |
6035 | else | |
6036 | utf8 |= OPpTRANS_TO_UTF; | |
6037 | break; | |
6038 | default: | |
cea2e8a9 | 6039 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6040 | } |
6041 | } | |
395c3793 LW |
6042 | s++; |
6043 | } | |
a0ed51b3 | 6044 | o->op_private = del|squash|complement|utf8; |
79072805 | 6045 | |
3280af22 | 6046 | PL_lex_op = o; |
79072805 LW |
6047 | yylval.ival = OP_TRANS; |
6048 | return s; | |
6049 | } | |
6050 | ||
76e3520e | 6051 | STATIC char * |
cea2e8a9 | 6052 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6053 | { |
11343788 | 6054 | dTHR; |
79072805 LW |
6055 | SV *herewas; |
6056 | I32 op_type = OP_SCALAR; | |
6057 | I32 len; | |
6058 | SV *tmpstr; | |
6059 | char term; | |
6060 | register char *d; | |
fc36a67e | 6061 | register char *e; |
4633a7c4 | 6062 | char *peek; |
3280af22 | 6063 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6064 | |
6065 | s += 2; | |
3280af22 NIS |
6066 | d = PL_tokenbuf; |
6067 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6068 | if (!outer) |
79072805 | 6069 | *d++ = '\n'; |
4633a7c4 LW |
6070 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6071 | if (*peek && strchr("`'\"",*peek)) { | |
6072 | s = peek; | |
79072805 | 6073 | term = *s++; |
3280af22 | 6074 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6075 | d += len; |
3280af22 | 6076 | if (s < PL_bufend) |
79072805 | 6077 | s++; |
79072805 LW |
6078 | } |
6079 | else { | |
6080 | if (*s == '\\') | |
6081 | s++, term = '\''; | |
6082 | else | |
6083 | term = '"'; | |
7e2040f0 | 6084 | if (!isALNUM_lazy_if(s,UTF)) |
4633a7c4 | 6085 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 6086 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6087 | if (d < e) |
6088 | *d++ = *s; | |
6089 | } | |
6090 | } | |
3280af22 | 6091 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6092 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6093 | *d++ = '\n'; |
6094 | *d = '\0'; | |
3280af22 | 6095 | len = d - PL_tokenbuf; |
6a27c188 | 6096 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6097 | d = strchr(s, '\r'); |
6098 | if (d) { | |
6099 | char *olds = s; | |
6100 | s = d; | |
3280af22 | 6101 | while (s < PL_bufend) { |
f63a84b2 LW |
6102 | if (*s == '\r') { |
6103 | *d++ = '\n'; | |
6104 | if (*++s == '\n') | |
6105 | s++; | |
6106 | } | |
6107 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6108 | *d++ = *s++; | |
6109 | s++; | |
6110 | } | |
6111 | else | |
6112 | *d++ = *s++; | |
6113 | } | |
6114 | *d = '\0'; | |
3280af22 NIS |
6115 | PL_bufend = d; |
6116 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6117 | s = olds; |
6118 | } | |
6119 | #endif | |
79072805 | 6120 | d = "\n"; |
3280af22 | 6121 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6122 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6123 | else |
79cb57f6 | 6124 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6125 | s += SvCUR(herewas); |
748a9306 | 6126 | |
8d6dde3e | 6127 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6128 | sv_upgrade(tmpstr, SVt_PVIV); |
6129 | if (term == '\'') { | |
79072805 | 6130 | op_type = OP_CONST; |
748a9306 LW |
6131 | SvIVX(tmpstr) = -1; |
6132 | } | |
6133 | else if (term == '`') { | |
79072805 | 6134 | op_type = OP_BACKTICK; |
748a9306 LW |
6135 | SvIVX(tmpstr) = '\\'; |
6136 | } | |
79072805 LW |
6137 | |
6138 | CLINE; | |
57843af0 | 6139 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6140 | PL_multi_open = PL_multi_close = '<'; |
6141 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6142 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6143 | char *bufptr = PL_sublex_info.super_bufptr; | |
6144 | char *bufend = PL_sublex_info.super_bufend; | |
6145 | char *olds = s - SvCUR(herewas); | |
6146 | s = strchr(bufptr, '\n'); | |
6147 | if (!s) | |
6148 | s = bufend; | |
6149 | d = s; | |
6150 | while (s < bufend && | |
6151 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6152 | if (*s++ == '\n') | |
57843af0 | 6153 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6154 | } |
6155 | if (s >= bufend) { | |
57843af0 | 6156 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6157 | missingterm(PL_tokenbuf); |
6158 | } | |
6159 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6160 | sv_setpvn(tmpstr,d+1,s-d); | |
6161 | s += len - 1; | |
6162 | sv_catpvn(herewas,s,bufend-s); | |
6163 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6164 | ||
6165 | s = olds; | |
6166 | goto retval; | |
6167 | } | |
6168 | else if (!outer) { | |
79072805 | 6169 | d = s; |
3280af22 NIS |
6170 | while (s < PL_bufend && |
6171 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6172 | if (*s++ == '\n') |
57843af0 | 6173 | CopLINE_inc(PL_curcop); |
79072805 | 6174 | } |
3280af22 | 6175 | if (s >= PL_bufend) { |
57843af0 | 6176 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6177 | missingterm(PL_tokenbuf); |
79072805 LW |
6178 | } |
6179 | sv_setpvn(tmpstr,d+1,s-d); | |
6180 | s += len - 1; | |
57843af0 | 6181 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6182 | |
3280af22 NIS |
6183 | sv_catpvn(herewas,s,PL_bufend-s); |
6184 | sv_setsv(PL_linestr,herewas); | |
6185 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6186 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6187 | } |
6188 | else | |
6189 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6190 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6191 | if (!outer || |
3280af22 | 6192 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6193 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6194 | missingterm(PL_tokenbuf); |
79072805 | 6195 | } |
57843af0 | 6196 | CopLINE_inc(PL_curcop); |
3280af22 | 6197 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6198 | #ifndef PERL_STRICT_CR |
3280af22 | 6199 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6200 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6201 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6202 | { |
3280af22 NIS |
6203 | PL_bufend[-2] = '\n'; |
6204 | PL_bufend--; | |
6205 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6206 | } |
3280af22 NIS |
6207 | else if (PL_bufend[-1] == '\r') |
6208 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6209 | } |
3280af22 NIS |
6210 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6211 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6212 | #endif |
3280af22 | 6213 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6214 | SV *sv = NEWSV(88,0); |
6215 | ||
93a17b20 | 6216 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6217 | sv_setsv(sv,PL_linestr); |
57843af0 | 6218 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6219 | } |
3280af22 NIS |
6220 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6221 | s = PL_bufend - 1; | |
79072805 | 6222 | *s = ' '; |
3280af22 NIS |
6223 | sv_catsv(PL_linestr,herewas); |
6224 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6225 | } |
6226 | else { | |
3280af22 NIS |
6227 | s = PL_bufend; |
6228 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6229 | } |
6230 | } | |
79072805 | 6231 | s++; |
0244c3a4 | 6232 | retval: |
57843af0 | 6233 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6234 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6235 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6236 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6237 | } |
8990e307 | 6238 | SvREFCNT_dec(herewas); |
3280af22 | 6239 | PL_lex_stuff = tmpstr; |
79072805 LW |
6240 | yylval.ival = op_type; |
6241 | return s; | |
6242 | } | |
6243 | ||
02aa26ce NT |
6244 | /* scan_inputsymbol |
6245 | takes: current position in input buffer | |
6246 | returns: new position in input buffer | |
6247 | side-effects: yylval and lex_op are set. | |
6248 | ||
6249 | This code handles: | |
6250 | ||
6251 | <> read from ARGV | |
6252 | <FH> read from filehandle | |
6253 | <pkg::FH> read from package qualified filehandle | |
6254 | <pkg'FH> read from package qualified filehandle | |
6255 | <$fh> read from filehandle in $fh | |
6256 | <*.h> filename glob | |
6257 | ||
6258 | */ | |
6259 | ||
76e3520e | 6260 | STATIC char * |
cea2e8a9 | 6261 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6262 | { |
02aa26ce | 6263 | register char *s = start; /* current position in buffer */ |
79072805 | 6264 | register char *d; |
fc36a67e | 6265 | register char *e; |
1b420867 | 6266 | char *end; |
79072805 LW |
6267 | I32 len; |
6268 | ||
3280af22 NIS |
6269 | d = PL_tokenbuf; /* start of temp holding space */ |
6270 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6271 | end = strchr(s, '\n'); |
6272 | if (!end) | |
6273 | end = PL_bufend; | |
6274 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6275 | |
6276 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6277 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6278 | */ |
6279 | ||
3280af22 | 6280 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6281 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6282 | if (s >= end) |
cea2e8a9 | 6283 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6284 | |
fc36a67e | 6285 | s++; |
02aa26ce NT |
6286 | |
6287 | /* check for <$fh> | |
6288 | Remember, only scalar variables are interpreted as filehandles by | |
6289 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6290 | treated as a glob() call. | |
6291 | This code makes use of the fact that except for the $ at the front, | |
6292 | a scalar variable and a filehandle look the same. | |
6293 | */ | |
4633a7c4 | 6294 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6295 | |
6296 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6297 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6298 | d++; |
02aa26ce NT |
6299 | |
6300 | /* If we've tried to read what we allow filehandles to look like, and | |
6301 | there's still text left, then it must be a glob() and not a getline. | |
6302 | Use scan_str to pull out the stuff between the <> and treat it | |
6303 | as nothing more than a string. | |
6304 | */ | |
6305 | ||
3280af22 | 6306 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6307 | yylval.ival = OP_GLOB; |
6308 | set_csh(); | |
09bef843 | 6309 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6310 | if (!s) |
cea2e8a9 | 6311 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6312 | return s; |
6313 | } | |
395c3793 | 6314 | else { |
02aa26ce | 6315 | /* we're in a filehandle read situation */ |
3280af22 | 6316 | d = PL_tokenbuf; |
02aa26ce NT |
6317 | |
6318 | /* turn <> into <ARGV> */ | |
79072805 LW |
6319 | if (!len) |
6320 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6321 | |
6322 | /* if <$fh>, create the ops to turn the variable into a | |
6323 | filehandle | |
6324 | */ | |
79072805 | 6325 | if (*d == '$') { |
a0d0e21e | 6326 | I32 tmp; |
02aa26ce NT |
6327 | |
6328 | /* try to find it in the pad for this block, otherwise find | |
6329 | add symbol table ops | |
6330 | */ | |
11343788 MB |
6331 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6332 | OP *o = newOP(OP_PADSV, 0); | |
6333 | o->op_targ = tmp; | |
f5284f61 | 6334 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6335 | } |
6336 | else { | |
6337 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6338 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6339 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6340 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6341 | } |
f5284f61 IZ |
6342 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6343 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6344 | yylval.ival = OP_NULL; |
6345 | } | |
02aa26ce NT |
6346 | |
6347 | /* If it's none of the above, it must be a literal filehandle | |
6348 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6349 | else { |
85e6fe83 | 6350 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6351 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6352 | yylval.ival = OP_NULL; |
6353 | } | |
6354 | } | |
02aa26ce | 6355 | |
79072805 LW |
6356 | return s; |
6357 | } | |
6358 | ||
02aa26ce NT |
6359 | |
6360 | /* scan_str | |
6361 | takes: start position in buffer | |
09bef843 SB |
6362 | keep_quoted preserve \ on the embedded delimiter(s) |
6363 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6364 | returns: position to continue reading from buffer |
6365 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6366 | updates the read buffer. | |
6367 | ||
6368 | This subroutine pulls a string out of the input. It is called for: | |
6369 | q single quotes q(literal text) | |
6370 | ' single quotes 'literal text' | |
6371 | qq double quotes qq(interpolate $here please) | |
6372 | " double quotes "interpolate $here please" | |
6373 | qx backticks qx(/bin/ls -l) | |
6374 | ` backticks `/bin/ls -l` | |
6375 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6376 | m// regexp match m/this/ | |
6377 | s/// regexp substitute s/this/that/ | |
6378 | tr/// string transliterate tr/this/that/ | |
6379 | y/// string transliterate y/this/that/ | |
6380 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6381 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6382 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6383 | ||
6384 | In most of these cases (all but <>, patterns and transliterate) | |
6385 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6386 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6387 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6388 | calls scan_str(). | |
6389 | ||
6390 | It skips whitespace before the string starts, and treats the first | |
6391 | character as the delimiter. If the delimiter is one of ([{< then | |
6392 | the corresponding "close" character )]}> is used as the closing | |
6393 | delimiter. It allows quoting of delimiters, and if the string has | |
6394 | balanced delimiters ([{<>}]) it allows nesting. | |
6395 | ||
6396 | The lexer always reads these strings into lex_stuff, except in the | |
6397 | case of the operators which take *two* arguments (s/// and tr///) | |
6398 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6399 | arg to s or tr) and if so puts the string into lex_repl. | |
6400 | ||
6401 | */ | |
6402 | ||
76e3520e | 6403 | STATIC char * |
09bef843 | 6404 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6405 | { |
11343788 | 6406 | dTHR; |
02aa26ce NT |
6407 | SV *sv; /* scalar value: string */ |
6408 | char *tmps; /* temp string, used for delimiter matching */ | |
6409 | register char *s = start; /* current position in the buffer */ | |
6410 | register char term; /* terminating character */ | |
6411 | register char *to; /* current position in the sv's data */ | |
6412 | I32 brackets = 1; /* bracket nesting level */ | |
b1c7b182 | 6413 | bool has_utf = FALSE; /* is there any utf8 content? */ |
02aa26ce NT |
6414 | |
6415 | /* skip space before the delimiter */ | |
fb73857a | 6416 | if (isSPACE(*s)) |
6417 | s = skipspace(s); | |
02aa26ce NT |
6418 | |
6419 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6420 | CLINE; |
02aa26ce NT |
6421 | |
6422 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6423 | term = *s; |
b1c7b182 GS |
6424 | if ((term & 0x80) && UTF) |
6425 | has_utf = TRUE; | |
6426 | ||
02aa26ce | 6427 | /* mark where we are */ |
57843af0 | 6428 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6429 | PL_multi_open = term; |
02aa26ce NT |
6430 | |
6431 | /* find corresponding closing delimiter */ | |
93a17b20 | 6432 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6433 | term = tmps[5]; |
3280af22 | 6434 | PL_multi_close = term; |
79072805 | 6435 | |
02aa26ce | 6436 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6437 | assuming. 79 is the SV's initial length. What a random number. */ |
6438 | sv = NEWSV(87,79); | |
ed6116ce LW |
6439 | sv_upgrade(sv, SVt_PVIV); |
6440 | SvIVX(sv) = term; | |
a0d0e21e | 6441 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6442 | |
6443 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6444 | if (keep_delims) |
6445 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6446 | s++; |
6447 | for (;;) { | |
02aa26ce | 6448 | /* extend sv if need be */ |
3280af22 | 6449 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6450 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6451 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6452 | |
02aa26ce | 6453 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6454 | if (PL_multi_open == PL_multi_close) { |
6455 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6456 | /* embedded newlines increment the current line number */ |
3280af22 | 6457 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6458 | CopLINE_inc(PL_curcop); |
02aa26ce | 6459 | /* handle quoted delimiters */ |
3280af22 | 6460 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6461 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6462 | s++; |
02aa26ce | 6463 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6464 | else |
6465 | *to++ = *s++; | |
6466 | } | |
02aa26ce NT |
6467 | /* terminate when run out of buffer (the for() condition), or |
6468 | have found the terminator */ | |
93a17b20 LW |
6469 | else if (*s == term) |
6470 | break; | |
b1c7b182 GS |
6471 | else if (!has_utf && (*s & 0x80) && UTF) |
6472 | has_utf = TRUE; | |
93a17b20 LW |
6473 | *to = *s; |
6474 | } | |
6475 | } | |
02aa26ce NT |
6476 | |
6477 | /* if the terminator isn't the same as the start character (e.g., | |
6478 | matched brackets), we have to allow more in the quoting, and | |
6479 | be prepared for nested brackets. | |
6480 | */ | |
93a17b20 | 6481 | else { |
02aa26ce | 6482 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6483 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6484 | /* embedded newlines increment the line count */ |
3280af22 | 6485 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6486 | CopLINE_inc(PL_curcop); |
02aa26ce | 6487 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6488 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6489 | if (!keep_quoted && |
6490 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6491 | s++; |
6492 | else | |
6493 | *to++ = *s++; | |
6494 | } | |
02aa26ce | 6495 | /* allow nested opens and closes */ |
3280af22 | 6496 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6497 | break; |
3280af22 | 6498 | else if (*s == PL_multi_open) |
93a17b20 | 6499 | brackets++; |
b1c7b182 GS |
6500 | else if (!has_utf && (*s & 0x80) && UTF) |
6501 | has_utf = TRUE; | |
93a17b20 LW |
6502 | *to = *s; |
6503 | } | |
6504 | } | |
02aa26ce | 6505 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6506 | *to = '\0'; |
463ee0b2 | 6507 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6508 | |
02aa26ce NT |
6509 | /* |
6510 | * this next chunk reads more into the buffer if we're not done yet | |
6511 | */ | |
6512 | ||
b1c7b182 GS |
6513 | if (s < PL_bufend) |
6514 | break; /* handle case where we are done yet :-) */ | |
79072805 | 6515 | |
6a27c188 | 6516 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6517 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6518 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6519 | (to[-2] == '\n' && to[-1] == '\r')) | |
6520 | { | |
f63a84b2 LW |
6521 | to[-2] = '\n'; |
6522 | to--; | |
6523 | SvCUR_set(sv, to - SvPVX(sv)); | |
6524 | } | |
6525 | else if (to[-1] == '\r') | |
6526 | to[-1] = '\n'; | |
6527 | } | |
6528 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6529 | to[-1] = '\n'; | |
6530 | #endif | |
6531 | ||
02aa26ce NT |
6532 | /* if we're out of file, or a read fails, bail and reset the current |
6533 | line marker so we can report where the unterminated string began | |
6534 | */ | |
3280af22 NIS |
6535 | if (!PL_rsfp || |
6536 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6537 | sv_free(sv); |
57843af0 | 6538 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6539 | return Nullch; |
6540 | } | |
02aa26ce | 6541 | /* we read a line, so increment our line counter */ |
57843af0 | 6542 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6543 | |
02aa26ce | 6544 | /* update debugger info */ |
3280af22 | 6545 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6546 | SV *sv = NEWSV(88,0); |
6547 | ||
93a17b20 | 6548 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6549 | sv_setsv(sv,PL_linestr); |
57843af0 | 6550 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6551 | } |
a0ed51b3 | 6552 | |
3280af22 NIS |
6553 | /* having changed the buffer, we must update PL_bufend */ |
6554 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6555 | } |
02aa26ce NT |
6556 | |
6557 | /* at this point, we have successfully read the delimited string */ | |
6558 | ||
09bef843 SB |
6559 | if (keep_delims) |
6560 | sv_catpvn(sv, s, 1); | |
b1c7b182 GS |
6561 | if (has_utf) |
6562 | SvUTF8_on(sv); | |
57843af0 | 6563 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6564 | s++; |
02aa26ce NT |
6565 | |
6566 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6567 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6568 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6569 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6570 | } |
02aa26ce NT |
6571 | |
6572 | /* decide whether this is the first or second quoted string we've read | |
6573 | for this op | |
6574 | */ | |
6575 | ||
3280af22 NIS |
6576 | if (PL_lex_stuff) |
6577 | PL_lex_repl = sv; | |
79072805 | 6578 | else |
3280af22 | 6579 | PL_lex_stuff = sv; |
378cc40b LW |
6580 | return s; |
6581 | } | |
6582 | ||
02aa26ce NT |
6583 | /* |
6584 | scan_num | |
6585 | takes: pointer to position in buffer | |
6586 | returns: pointer to new position in buffer | |
6587 | side-effects: builds ops for the constant in yylval.op | |
6588 | ||
6589 | Read a number in any of the formats that Perl accepts: | |
6590 | ||
4f19785b | 6591 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6592 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6593 | ||
6594 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6595 | underbars before a decimal point must be at three digit intervals. | |
6596 | ||
3280af22 | 6597 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6598 | thing it reads. |
6599 | ||
6600 | If it reads a number without a decimal point or an exponent, it will | |
6601 | try converting the number to an integer and see if it can do so | |
6602 | without loss of precision. | |
6603 | */ | |
6604 | ||
378cc40b | 6605 | char * |
864dbfa3 | 6606 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6607 | { |
02aa26ce NT |
6608 | register char *s = start; /* current position in buffer */ |
6609 | register char *d; /* destination in temp buffer */ | |
6610 | register char *e; /* end of temp buffer */ | |
b8403495 | 6611 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6612 | NV value; /* number read, as a double */ |
a7cb1f99 | 6613 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6614 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6615 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6616 | static char number_too_long[] = "Number too long"; |
378cc40b | 6617 | |
02aa26ce NT |
6618 | /* We use the first character to decide what type of number this is */ |
6619 | ||
378cc40b | 6620 | switch (*s) { |
79072805 | 6621 | default: |
cea2e8a9 | 6622 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6623 | |
6624 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6625 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6626 | case '0': |
6627 | { | |
02aa26ce NT |
6628 | /* variables: |
6629 | u holds the "number so far" | |
4f19785b WSI |
6630 | shift the power of 2 of the base |
6631 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6632 | overflowed was the number more than we can hold? |
6633 | ||
6634 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6635 | we in octal/hex/binary?" indicator to disallow hex characters |
6636 | when in octal mode. | |
02aa26ce | 6637 | */ |
f248d071 | 6638 | dTHR; |
9e24b6e2 JH |
6639 | NV n = 0.0; |
6640 | UV u = 0; | |
79072805 | 6641 | I32 shift; |
9e24b6e2 JH |
6642 | bool overflowed = FALSE; |
6643 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6644 | static char* bases[5] = { "", "binary", "", "octal", | |
6645 | "hexadecimal" }; | |
6646 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6647 | "Hexadecimal" }; | |
6648 | static char *maxima[5] = { "", | |
6649 | "0b11111111111111111111111111111111", | |
6650 | "", | |
893fe2c2 | 6651 | "037777777777", |
9e24b6e2 JH |
6652 | "0xffffffff" }; |
6653 | char *base, *Base, *max; | |
378cc40b | 6654 | |
02aa26ce | 6655 | /* check for hex */ |
378cc40b LW |
6656 | if (s[1] == 'x') { |
6657 | shift = 4; | |
6658 | s += 2; | |
4f19785b WSI |
6659 | } else if (s[1] == 'b') { |
6660 | shift = 1; | |
6661 | s += 2; | |
378cc40b | 6662 | } |
02aa26ce | 6663 | /* check for a decimal in disguise */ |
b78218b7 | 6664 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6665 | goto decimal; |
02aa26ce | 6666 | /* so it must be octal */ |
378cc40b LW |
6667 | else |
6668 | shift = 3; | |
9e24b6e2 JH |
6669 | |
6670 | base = bases[shift]; | |
6671 | Base = Bases[shift]; | |
6672 | max = maxima[shift]; | |
02aa26ce | 6673 | |
4f19785b | 6674 | /* read the rest of the number */ |
378cc40b | 6675 | for (;;) { |
9e24b6e2 | 6676 | /* x is used in the overflow test, |
893fe2c2 | 6677 | b is the digit we're adding on. */ |
9e24b6e2 | 6678 | UV x, b; |
55497cff | 6679 | |
378cc40b | 6680 | switch (*s) { |
02aa26ce NT |
6681 | |
6682 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6683 | default: |
6684 | goto out; | |
02aa26ce NT |
6685 | |
6686 | /* _ are ignored */ | |
de3bb511 LW |
6687 | case '_': |
6688 | s++; | |
6689 | break; | |
02aa26ce NT |
6690 | |
6691 | /* 8 and 9 are not octal */ | |
378cc40b | 6692 | case '8': case '9': |
4f19785b | 6693 | if (shift == 3) |
cea2e8a9 | 6694 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6695 | /* FALL THROUGH */ |
02aa26ce NT |
6696 | |
6697 | /* octal digits */ | |
4f19785b | 6698 | case '2': case '3': case '4': |
378cc40b | 6699 | case '5': case '6': case '7': |
4f19785b | 6700 | if (shift == 1) |
cea2e8a9 | 6701 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6702 | /* FALL THROUGH */ |
6703 | ||
6704 | case '0': case '1': | |
02aa26ce | 6705 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6706 | goto digit; |
02aa26ce NT |
6707 | |
6708 | /* hex digits */ | |
378cc40b LW |
6709 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6710 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6711 | /* make sure they said 0x */ |
378cc40b LW |
6712 | if (shift != 4) |
6713 | goto out; | |
55497cff | 6714 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6715 | |
6716 | /* Prepare to put the digit we have onto the end | |
6717 | of the number so far. We check for overflows. | |
6718 | */ | |
6719 | ||
55497cff | 6720 | digit: |
9e24b6e2 JH |
6721 | if (!overflowed) { |
6722 | x = u << shift; /* make room for the digit */ | |
6723 | ||
6724 | if ((x >> shift) != u | |
6725 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6726 | dTHR; | |
6727 | overflowed = TRUE; | |
6728 | n = (NV) u; | |
767a6a26 PM |
6729 | if (ckWARN_d(WARN_OVERFLOW)) |
6730 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6731 | "Integer overflow in %s number", |
6732 | base); | |
6733 | } else | |
6734 | u = x | b; /* add the digit to the end */ | |
6735 | } | |
6736 | if (overflowed) { | |
6737 | n *= nvshift[shift]; | |
6738 | /* If an NV has not enough bits in its | |
6739 | * mantissa to represent an UV this summing of | |
6740 | * small low-order numbers is a waste of time | |
6741 | * (because the NV cannot preserve the | |
6742 | * low-order bits anyway): we could just | |
6743 | * remember when did we overflow and in the | |
6744 | * end just multiply n by the right | |
6745 | * amount. */ | |
6746 | n += (NV) b; | |
55497cff | 6747 | } |
378cc40b LW |
6748 | break; |
6749 | } | |
6750 | } | |
02aa26ce NT |
6751 | |
6752 | /* if we get here, we had success: make a scalar value from | |
6753 | the number. | |
6754 | */ | |
378cc40b | 6755 | out: |
79072805 | 6756 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6757 | if (overflowed) { |
6758 | dTHR; | |
767a6a26 PM |
6759 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6760 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6761 | "%s number > %s non-portable", |
6762 | Base, max); | |
6763 | sv_setnv(sv, n); | |
6764 | } | |
6765 | else { | |
15041a67 | 6766 | #if UVSIZE > 4 |
9e24b6e2 | 6767 | dTHR; |
767a6a26 PM |
6768 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6769 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6770 | "%s number > %s non-portable", |
6771 | Base, max); | |
2cc4c2dc | 6772 | #endif |
9e24b6e2 JH |
6773 | sv_setuv(sv, u); |
6774 | } | |
2cc4c2dc | 6775 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6776 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6777 | } |
6778 | break; | |
02aa26ce NT |
6779 | |
6780 | /* | |
6781 | handle decimal numbers. | |
6782 | we're also sent here when we read a 0 as the first digit | |
6783 | */ | |
378cc40b LW |
6784 | case '1': case '2': case '3': case '4': case '5': |
6785 | case '6': case '7': case '8': case '9': case '.': | |
6786 | decimal: | |
3280af22 NIS |
6787 | d = PL_tokenbuf; |
6788 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6789 | floatit = FALSE; |
02aa26ce NT |
6790 | |
6791 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6792 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6793 | /* skip underscores, checking for misplaced ones |
6794 | if -w is on | |
6795 | */ | |
93a17b20 | 6796 | if (*s == '_') { |
d008e5eb | 6797 | dTHR; /* only for ckWARN */ |
599cee73 | 6798 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6799 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6800 | lastub = ++s; |
6801 | } | |
fc36a67e | 6802 | else { |
02aa26ce | 6803 | /* check for end of fixed-length buffer */ |
fc36a67e | 6804 | if (d >= e) |
cea2e8a9 | 6805 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6806 | /* if we're ok, copy the character */ |
378cc40b | 6807 | *d++ = *s++; |
fc36a67e | 6808 | } |
378cc40b | 6809 | } |
02aa26ce NT |
6810 | |
6811 | /* final misplaced underbar check */ | |
d008e5eb GS |
6812 | if (lastub && s - lastub != 3) { |
6813 | dTHR; | |
6814 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6815 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6816 | } |
02aa26ce NT |
6817 | |
6818 | /* read a decimal portion if there is one. avoid | |
6819 | 3..5 being interpreted as the number 3. followed | |
6820 | by .5 | |
6821 | */ | |
2f3197b3 | 6822 | if (*s == '.' && s[1] != '.') { |
79072805 | 6823 | floatit = TRUE; |
378cc40b | 6824 | *d++ = *s++; |
02aa26ce NT |
6825 | |
6826 | /* copy, ignoring underbars, until we run out of | |
6827 | digits. Note: no misplaced underbar checks! | |
6828 | */ | |
fc36a67e | 6829 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6830 | /* fixed length buffer check */ |
fc36a67e | 6831 | if (d >= e) |
cea2e8a9 | 6832 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6833 | if (*s != '_') |
6834 | *d++ = *s; | |
378cc40b LW |
6835 | } |
6836 | } | |
02aa26ce NT |
6837 | |
6838 | /* read exponent part, if present */ | |
93a17b20 | 6839 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6840 | floatit = TRUE; |
6841 | s++; | |
02aa26ce NT |
6842 | |
6843 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6844 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6845 | |
6846 | /* allow positive or negative exponent */ | |
378cc40b LW |
6847 | if (*s == '+' || *s == '-') |
6848 | *d++ = *s++; | |
02aa26ce NT |
6849 | |
6850 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6851 | while (isDIGIT(*s)) { |
6852 | if (d >= e) | |
cea2e8a9 | 6853 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6854 | *d++ = *s++; |
fc36a67e | 6855 | } |
378cc40b | 6856 | } |
02aa26ce NT |
6857 | |
6858 | /* terminate the string */ | |
378cc40b | 6859 | *d = '\0'; |
02aa26ce NT |
6860 | |
6861 | /* make an sv from the string */ | |
79072805 | 6862 | sv = NEWSV(92,0); |
097ee67d JH |
6863 | |
6864 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6865 | |
6866 | /* | |
6867 | See if we can make do with an integer value without loss of | |
6868 | precision. We use I_V to cast to an int, because some | |
6869 | compilers have issues. Then we try casting it back and see | |
6870 | if it was the same. We only do this if we know we | |
6871 | specifically read an integer. | |
6872 | ||
6873 | Note: if floatit is true, then we don't need to do the | |
6874 | conversion at all. | |
6875 | */ | |
1e422769 | 6876 | tryiv = I_V(value); |
65202027 | 6877 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6878 | sv_setiv(sv, tryiv); |
2f3197b3 | 6879 | else |
1e422769 | 6880 | sv_setnv(sv, value); |
b8403495 JH |
6881 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6882 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6883 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6884 | (floatit ? "float" : "integer"), |
6885 | sv, Nullsv, NULL); | |
378cc40b | 6886 | break; |
a7cb1f99 GS |
6887 | /* if it starts with a v, it could be a version number */ |
6888 | case 'v': | |
6889 | { | |
a7cb1f99 GS |
6890 | char *pos = s; |
6891 | pos++; | |
6892 | while (isDIGIT(*pos)) | |
6893 | pos++; | |
6894 | if (*pos == '.' && isDIGIT(pos[1])) { | |
f83ee824 | 6895 | UV rev; |
a7cb1f99 GS |
6896 | U8 tmpbuf[10]; |
6897 | U8 *tmpend; | |
6898 | NV nshift = 1.0; | |
3818b22b | 6899 | bool utf8 = FALSE; |
a7cb1f99 GS |
6900 | s++; /* get past 'v' */ |
6901 | ||
6902 | sv = NEWSV(92,5); | |
6903 | SvUPGRADE(sv, SVt_PVNV); | |
6904 | sv_setpvn(sv, "", 0); | |
6905 | ||
6906 | do { | |
3cb0bbe5 GS |
6907 | if (*s == '0' && isDIGIT(s[1])) |
6908 | yyerror("Octal number in vector unsupported"); | |
a7cb1f99 GS |
6909 | rev = atoi(s); |
6910 | s = ++pos; | |
6911 | while (isDIGIT(*pos)) | |
6912 | pos++; | |
6913 | ||
3818b22b GS |
6914 | if (rev > 127) { |
6915 | tmpend = uv_to_utf8(tmpbuf, rev); | |
6916 | utf8 = TRUE; | |
6917 | } | |
6918 | else { | |
6919 | tmpbuf[0] = (U8)rev; | |
6920 | tmpend = &tmpbuf[1]; | |
6921 | } | |
a7cb1f99 | 6922 | *tmpend = '\0'; |
33079e28 | 6923 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6924 | if (rev > 0) |
6925 | SvNVX(sv) += (NV)rev/nshift; | |
6926 | nshift *= 1000; | |
6927 | } while (*pos == '.' && isDIGIT(pos[1])); | |
6928 | ||
3cb0bbe5 GS |
6929 | if (*s == '0' && isDIGIT(s[1])) |
6930 | yyerror("Octal number in vector unsupported"); | |
a7cb1f99 GS |
6931 | rev = atoi(s); |
6932 | s = pos; | |
6933 | tmpend = uv_to_utf8(tmpbuf, rev); | |
3818b22b | 6934 | utf8 = utf8 || rev > 127; |
a7cb1f99 | 6935 | *tmpend = '\0'; |
33079e28 | 6936 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6937 | if (rev > 0) |
6938 | SvNVX(sv) += (NV)rev/nshift; | |
6939 | ||
6940 | SvPOK_on(sv); | |
6941 | SvNOK_on(sv); | |
6942 | SvREADONLY_on(sv); | |
3818b22b GS |
6943 | if (utf8) |
6944 | SvUTF8_on(sv); | |
a7cb1f99 GS |
6945 | } |
6946 | } | |
6947 | break; | |
79072805 | 6948 | } |
a687059c | 6949 | |
02aa26ce NT |
6950 | /* make the op for the constant and return */ |
6951 | ||
a7cb1f99 GS |
6952 | if (sv) |
6953 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
6954 | else | |
6955 | yylval.opval = Nullop; | |
a687059c | 6956 | |
378cc40b LW |
6957 | return s; |
6958 | } | |
6959 | ||
76e3520e | 6960 | STATIC char * |
cea2e8a9 | 6961 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 6962 | { |
11343788 | 6963 | dTHR; |
79072805 | 6964 | register char *eol; |
378cc40b | 6965 | register char *t; |
79cb57f6 | 6966 | SV *stuff = newSVpvn("",0); |
79072805 | 6967 | bool needargs = FALSE; |
378cc40b | 6968 | |
79072805 | 6969 | while (!needargs) { |
85e6fe83 | 6970 | if (*s == '.' || *s == '}') { |
79072805 | 6971 | /*SUPPRESS 530*/ |
51882d45 GS |
6972 | #ifdef PERL_STRICT_CR |
6973 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6974 | #else | |
6975 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6976 | #endif | |
6a65c6a0 | 6977 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
6978 | break; |
6979 | } | |
3280af22 | 6980 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6981 | eol = strchr(s,'\n'); |
0f85fab0 | 6982 | if (!eol++) |
3280af22 | 6983 | eol = PL_bufend; |
0f85fab0 LW |
6984 | } |
6985 | else | |
3280af22 | 6986 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6987 | if (*s != '#') { |
a0d0e21e LW |
6988 | for (t = s; t < eol; t++) { |
6989 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6990 | needargs = FALSE; | |
6991 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6992 | } |
a0d0e21e LW |
6993 | if (*t == '@' || *t == '^') |
6994 | needargs = TRUE; | |
378cc40b | 6995 | } |
a0d0e21e | 6996 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
6997 | #ifndef PERL_STRICT_CR |
6998 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
6999 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7000 | end[-2] = '\n'; | |
7001 | end[-1] = '\0'; | |
7002 | SvCUR(stuff)--; | |
7003 | } | |
7004 | #endif | |
79072805 LW |
7005 | } |
7006 | s = eol; | |
3280af22 NIS |
7007 | if (PL_rsfp) { |
7008 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7009 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7010 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 7011 | if (!s) { |
3280af22 | 7012 | s = PL_bufptr; |
79072805 | 7013 | yyerror("Format not terminated"); |
378cc40b LW |
7014 | break; |
7015 | } | |
378cc40b | 7016 | } |
463ee0b2 | 7017 | incline(s); |
79072805 | 7018 | } |
a0d0e21e LW |
7019 | enough: |
7020 | if (SvCUR(stuff)) { | |
3280af22 | 7021 | PL_expect = XTERM; |
79072805 | 7022 | if (needargs) { |
3280af22 NIS |
7023 | PL_lex_state = LEX_NORMAL; |
7024 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7025 | force_next(','); |
7026 | } | |
a0d0e21e | 7027 | else |
3280af22 NIS |
7028 | PL_lex_state = LEX_FORMLINE; |
7029 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 7030 | force_next(THING); |
3280af22 | 7031 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7032 | force_next(LSTOP); |
378cc40b | 7033 | } |
79072805 | 7034 | else { |
8990e307 | 7035 | SvREFCNT_dec(stuff); |
3280af22 NIS |
7036 | PL_lex_formbrack = 0; |
7037 | PL_bufptr = s; | |
79072805 LW |
7038 | } |
7039 | return s; | |
378cc40b | 7040 | } |
a687059c | 7041 | |
76e3520e | 7042 | STATIC void |
cea2e8a9 | 7043 | S_set_csh(pTHX) |
a687059c | 7044 | { |
ae986130 | 7045 | #ifdef CSH |
3280af22 NIS |
7046 | if (!PL_cshlen) |
7047 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7048 | #endif |
a687059c | 7049 | } |
463ee0b2 | 7050 | |
ba6d6ac9 | 7051 | I32 |
864dbfa3 | 7052 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7053 | { |
11343788 | 7054 | dTHR; |
3280af22 NIS |
7055 | I32 oldsavestack_ix = PL_savestack_ix; |
7056 | CV* outsidecv = PL_compcv; | |
748a9306 | 7057 | AV* comppadlist; |
8990e307 | 7058 | |
3280af22 NIS |
7059 | if (PL_compcv) { |
7060 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7061 | } |
7766f137 | 7062 | SAVEI32(PL_subline); |
3280af22 NIS |
7063 | save_item(PL_subname); |
7064 | SAVEI32(PL_padix); | |
354992b1 | 7065 | SAVECOMPPAD(); |
3280af22 NIS |
7066 | SAVESPTR(PL_comppad_name); |
7067 | SAVESPTR(PL_compcv); | |
7068 | SAVEI32(PL_comppad_name_fill); | |
7069 | SAVEI32(PL_min_intro_pending); | |
7070 | SAVEI32(PL_max_intro_pending); | |
7071 | SAVEI32(PL_pad_reset_pending); | |
7072 | ||
7073 | PL_compcv = (CV*)NEWSV(1104,0); | |
7074 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7075 | CvFLAGS(PL_compcv) |= flags; | |
7076 | ||
7077 | PL_comppad = newAV(); | |
7078 | av_push(PL_comppad, Nullsv); | |
7079 | PL_curpad = AvARRAY(PL_comppad); | |
7080 | PL_comppad_name = newAV(); | |
7081 | PL_comppad_name_fill = 0; | |
7082 | PL_min_intro_pending = 0; | |
7083 | PL_padix = 0; | |
57843af0 | 7084 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7085 | #ifdef USE_THREADS |
79cb57f6 | 7086 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7087 | PL_curpad[0] = (SV*)newAV(); |
7088 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7089 | #endif /* USE_THREADS */ |
748a9306 LW |
7090 | |
7091 | comppadlist = newAV(); | |
7092 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7093 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7094 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7095 | |
3280af22 NIS |
7096 | CvPADLIST(PL_compcv) = comppadlist; |
7097 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7098 | #ifdef USE_THREADS |
533c011a NIS |
7099 | CvOWNER(PL_compcv) = 0; |
7100 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7101 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7102 | #endif /* USE_THREADS */ |
748a9306 | 7103 | |
8990e307 LW |
7104 | return oldsavestack_ix; |
7105 | } | |
7106 | ||
7107 | int | |
864dbfa3 | 7108 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7109 | { |
11343788 | 7110 | dTHR; |
faef0170 | 7111 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7112 | yyerror(s); |
faef0170 | 7113 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7114 | return 0; |
8990e307 LW |
7115 | } |
7116 | ||
7117 | int | |
864dbfa3 | 7118 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7119 | { |
11343788 | 7120 | dTHR; |
68dc0745 | 7121 | char *where = NULL; |
7122 | char *context = NULL; | |
7123 | int contlen = -1; | |
46fc3d4c | 7124 | SV *msg; |
463ee0b2 | 7125 | |
3280af22 | 7126 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7127 | where = "at EOF"; |
3280af22 NIS |
7128 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7129 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7130 | while (isSPACE(*PL_oldoldbufptr)) | |
7131 | PL_oldoldbufptr++; | |
7132 | context = PL_oldoldbufptr; | |
7133 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7134 | } |
3280af22 NIS |
7135 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7136 | PL_oldbufptr != PL_bufptr) { | |
7137 | while (isSPACE(*PL_oldbufptr)) | |
7138 | PL_oldbufptr++; | |
7139 | context = PL_oldbufptr; | |
7140 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7141 | } |
7142 | else if (yychar > 255) | |
68dc0745 | 7143 | where = "next token ???"; |
463ee0b2 | 7144 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
7145 | if (PL_lex_state == LEX_NORMAL || |
7146 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7147 | where = "at end of line"; |
3280af22 | 7148 | else if (PL_lex_inpat) |
68dc0745 | 7149 | where = "within pattern"; |
463ee0b2 | 7150 | else |
68dc0745 | 7151 | where = "within string"; |
463ee0b2 | 7152 | } |
46fc3d4c | 7153 | else { |
79cb57f6 | 7154 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7155 | if (yychar < 32) |
cea2e8a9 | 7156 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7157 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7158 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7159 | else |
cea2e8a9 | 7160 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7161 | where = SvPVX(where_sv); |
463ee0b2 | 7162 | } |
46fc3d4c | 7163 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7164 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7165 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7166 | if (context) |
cea2e8a9 | 7167 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7168 | else |
cea2e8a9 | 7169 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7170 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7171 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7172 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7173 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7174 | PL_multi_end = 0; |
a0d0e21e | 7175 | } |
faef0170 | 7176 | if (PL_in_eval & EVAL_WARNONLY) |
894356b3 | 7177 | Perl_warn(aTHX_ "%"SVf, msg); |
463ee0b2 | 7178 | else |
5a844595 GS |
7179 | qerror(msg); |
7180 | if (PL_error_count >= 10) | |
ed094faf | 7181 | Perl_croak(aTHX_ "%s has too many errors.\n", CopFILE(PL_curcop)); |
3280af22 NIS |
7182 | PL_in_my = 0; |
7183 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7184 | return 0; |
7185 | } | |
4e35701f | 7186 | |
161b471a | 7187 | |
51371543 | 7188 | #ifdef PERL_OBJECT |
51371543 GS |
7189 | #include "XSUB.h" |
7190 | #endif | |
7191 | ||
ffb4593c NT |
7192 | /* |
7193 | * restore_rsfp | |
7194 | * Restore a source filter. | |
7195 | */ | |
7196 | ||
51371543 GS |
7197 | static void |
7198 | restore_rsfp(pTHXo_ void *f) | |
7199 | { | |
7200 | PerlIO *fp = (PerlIO*)f; | |
7201 | ||
7202 | if (PL_rsfp == PerlIO_stdin()) | |
7203 | PerlIO_clearerr(PL_rsfp); | |
7204 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7205 | PerlIO_close(PL_rsfp); | |
7206 | PL_rsfp = fp; | |
7207 | } |