Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4eb8286e | 3 | * Copyright (c) 1991-1999, Larry Wall |
a687059c | 4 | * |
d48672a2 LW |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 7 | * |
a0d0e21e LW |
8 | */ |
9 | ||
10 | /* | |
11 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
12 | */ |
13 | ||
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 | ||
a0ed51b3 | 35 | #define UTF (PL_hints & HINT_UTF8) |
834a4ddd LW |
36 | /* |
37 | * Note: we try to be careful never to call the isXXX_utf8() functions | |
38 | * unless we're pretty sure we've seen the beginning of a UTF-8 character | |
39 | * (that is, the two high bits are set). Otherwise we risk loading in the | |
40 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. | |
41 | */ | |
42 | #define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
43 | ? isIDFIRST(*(p)) \ | |
44 | : isIDFIRST_utf8((U8*)p)) | |
45 | #define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
46 | ? isALNUM(*(p)) \ | |
47 | : isALNUM_utf8((U8*)p)) | |
a0ed51b3 | 48 | |
2b92dfce GS |
49 | /* In variables name $^X, these are the legal values for X. |
50 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
51 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
52 | ||
ffb4593c NT |
53 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
54 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
55 | * can get by with a single comparison (if the compiler is smart enough). |
56 | */ | |
57 | ||
fb73857a | 58 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
59 | ||
55497cff | 60 | #define LEX_NORMAL 10 |
61 | #define LEX_INTERPNORMAL 9 | |
62 | #define LEX_INTERPCASEMOD 8 | |
63 | #define LEX_INTERPPUSH 7 | |
64 | #define LEX_INTERPSTART 6 | |
65 | #define LEX_INTERPEND 5 | |
66 | #define LEX_INTERPENDMAYBE 4 | |
67 | #define LEX_INTERPCONCAT 3 | |
68 | #define LEX_INTERPCONST 2 | |
69 | #define LEX_FORMLINE 1 | |
70 | #define LEX_KNOWNEXT 0 | |
79072805 | 71 | |
395c3793 LW |
72 | #ifdef I_FCNTL |
73 | #include <fcntl.h> | |
74 | #endif | |
fe14fcc3 LW |
75 | #ifdef I_SYS_FILE |
76 | #include <sys/file.h> | |
77 | #endif | |
395c3793 | 78 | |
a790bc05 | 79 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
80 | #ifdef I_UNISTD | |
81 | # include <unistd.h> /* Needed for execv() */ | |
82 | #endif | |
83 | ||
84 | ||
79072805 LW |
85 | #ifdef ff_next |
86 | #undef ff_next | |
d48672a2 LW |
87 | #endif |
88 | ||
a1a0e61e TD |
89 | #ifdef USE_PURE_BISON |
90 | YYSTYPE* yylval_pointer = NULL; | |
91 | int* yychar_pointer = NULL; | |
22c35a8c GS |
92 | # undef yylval |
93 | # undef yychar | |
e4bfbdd4 JH |
94 | # define yylval (*yylval_pointer) |
95 | # define yychar (*yychar_pointer) | |
96 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
97 | # undef yylex |
98 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
99 | #endif |
100 | ||
79072805 | 101 | #include "keywords.h" |
fe14fcc3 | 102 | |
ffb4593c NT |
103 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
104 | ||
ae986130 LW |
105 | #ifdef CLINE |
106 | #undef CLINE | |
107 | #endif | |
57843af0 | 108 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 109 | |
ffb4593c NT |
110 | /* |
111 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 112 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
113 | * |
114 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
115 | * OPERATOR : generic operator | |
116 | * AOPERATOR : assignment operator | |
117 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
118 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
119 | * PREREF : *EXPR where EXPR is not a simple identifier | |
120 | * TERM : expression term | |
121 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
122 | * FTST : file test operator | |
123 | * FUN0 : zero-argument function | |
2d2e263d | 124 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
125 | * BOop : bitwise or or xor |
126 | * BAop : bitwise and | |
127 | * SHop : shift operator | |
128 | * PWop : power operator | |
9cbb5ea2 | 129 | * PMop : pattern-matching operator |
ffb4593c NT |
130 | * Aop : addition-level operator |
131 | * Mop : multiplication-level operator | |
132 | * Eop : equality-testing operator | |
133 | * Rop : relational operator <= != gt | |
134 | * | |
135 | * Also see LOP and lop() below. | |
136 | */ | |
137 | ||
3280af22 NIS |
138 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
139 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
140 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
141 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
142 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
143 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
144 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
145 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
146 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
147 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
148 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
149 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
150 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
151 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
152 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
153 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
154 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
155 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
156 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
157 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 158 | |
a687059c LW |
159 | /* This bit of chicanery makes a unary function followed by |
160 | * a parenthesis into a function with one argument, highest precedence. | |
161 | */ | |
2f3197b3 | 162 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
163 | PL_expect = XTERM, \ |
164 | PL_bufptr = s, \ | |
165 | PL_last_uni = PL_oldbufptr, \ | |
166 | PL_last_lop_op = f, \ | |
a687059c LW |
167 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
168 | ||
79072805 | 169 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
170 | PL_bufptr = s, \ |
171 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
172 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
173 | ||
9f68db38 | 174 | /* grandfather return to old style */ |
3280af22 | 175 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 176 | |
ffb4593c NT |
177 | /* |
178 | * S_ao | |
179 | * | |
180 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
181 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
182 | */ | |
183 | ||
76e3520e | 184 | STATIC int |
cea2e8a9 | 185 | S_ao(pTHX_ int toketype) |
a0d0e21e | 186 | { |
3280af22 NIS |
187 | if (*PL_bufptr == '=') { |
188 | PL_bufptr++; | |
a0d0e21e LW |
189 | if (toketype == ANDAND) |
190 | yylval.ival = OP_ANDASSIGN; | |
191 | else if (toketype == OROR) | |
192 | yylval.ival = OP_ORASSIGN; | |
193 | toketype = ASSIGNOP; | |
194 | } | |
195 | return toketype; | |
196 | } | |
197 | ||
ffb4593c NT |
198 | /* |
199 | * S_no_op | |
200 | * When Perl expects an operator and finds something else, no_op | |
201 | * prints the warning. It always prints "<something> found where | |
202 | * operator expected. It prints "Missing semicolon on previous line?" | |
203 | * if the surprise occurs at the start of the line. "do you need to | |
204 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
205 | * where the compiler doesn't know if foo is a method call or a function. | |
206 | * It prints "Missing operator before end of line" if there's nothing | |
207 | * after the missing operator, or "... before <...>" if there is something | |
208 | * after the missing operator. | |
209 | */ | |
210 | ||
76e3520e | 211 | STATIC void |
cea2e8a9 | 212 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 213 | { |
3280af22 NIS |
214 | char *oldbp = PL_bufptr; |
215 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 216 | |
1189a94a GS |
217 | if (!s) |
218 | s = oldbp; | |
219 | else { | |
220 | assert(s >= oldbp); | |
221 | PL_bufptr = s; | |
222 | } | |
cea2e8a9 | 223 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 224 | if (is_first) |
cea2e8a9 | 225 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 226 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 227 | char *t; |
834a4ddd | 228 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 229 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 230 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 231 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
232 | } |
233 | else | |
cea2e8a9 | 234 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 235 | PL_bufptr = oldbp; |
8990e307 LW |
236 | } |
237 | ||
ffb4593c NT |
238 | /* |
239 | * S_missingterm | |
240 | * Complain about missing quote/regexp/heredoc terminator. | |
241 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
242 | * If we're in a delimited string and the delimiter is a control | |
243 | * character, it's reformatted into a two-char sequence like ^C. | |
244 | * This is fatal. | |
245 | */ | |
246 | ||
76e3520e | 247 | STATIC void |
cea2e8a9 | 248 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
249 | { |
250 | char tmpbuf[3]; | |
251 | char q; | |
252 | if (s) { | |
253 | char *nl = strrchr(s,'\n'); | |
d2719217 | 254 | if (nl) |
8990e307 LW |
255 | *nl = '\0'; |
256 | } | |
9d116dd7 JH |
257 | else if ( |
258 | #ifdef EBCDIC | |
259 | iscntrl(PL_multi_close) | |
260 | #else | |
261 | PL_multi_close < 32 || PL_multi_close == 127 | |
262 | #endif | |
263 | ) { | |
8990e307 | 264 | *tmpbuf = '^'; |
3280af22 | 265 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
266 | s = "\\n"; |
267 | tmpbuf[2] = '\0'; | |
268 | s = tmpbuf; | |
269 | } | |
270 | else { | |
3280af22 | 271 | *tmpbuf = PL_multi_close; |
8990e307 LW |
272 | tmpbuf[1] = '\0'; |
273 | s = tmpbuf; | |
274 | } | |
275 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 276 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 277 | } |
79072805 | 278 | |
ffb4593c NT |
279 | /* |
280 | * Perl_deprecate | |
ffb4593c NT |
281 | */ |
282 | ||
79072805 | 283 | void |
864dbfa3 | 284 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 285 | { |
d008e5eb | 286 | dTHR; |
599cee73 | 287 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 288 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
289 | } |
290 | ||
ffb4593c NT |
291 | /* |
292 | * depcom | |
9cbb5ea2 | 293 | * Deprecate a comma-less variable list. |
ffb4593c NT |
294 | */ |
295 | ||
76e3520e | 296 | STATIC void |
cea2e8a9 | 297 | S_depcom(pTHX) |
a0d0e21e LW |
298 | { |
299 | deprecate("comma-less variable list"); | |
300 | } | |
301 | ||
ffb4593c | 302 | /* |
9cbb5ea2 GS |
303 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
304 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
305 | */ |
306 | ||
c39cd008 GS |
307 | #ifdef PERL_CR_FILTER |
308 | static void | |
309 | strip_return(SV *sv) | |
310 | { | |
311 | register char *s = SvPVX(sv); | |
312 | register char *e = s + SvCUR(sv); | |
313 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
314 | while (s < e) { | |
315 | if (*s++ == '\r' && *s == '\n') { | |
316 | /* hit a CR-LF, need to copy the rest */ | |
317 | register char *d = s - 1; | |
318 | *d++ = *s++; | |
319 | while (s < e) { | |
320 | if (*s == '\r' && s[1] == '\n') | |
321 | s++; | |
322 | *d++ = *s++; | |
323 | } | |
324 | SvCUR(sv) -= s - d; | |
325 | return; | |
326 | } | |
327 | } | |
328 | } | |
a868473f | 329 | |
76e3520e | 330 | STATIC I32 |
c39cd008 | 331 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 332 | { |
c39cd008 GS |
333 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
334 | if (count > 0 && !maxlen) | |
335 | strip_return(sv); | |
336 | return count; | |
a868473f NIS |
337 | } |
338 | #endif | |
339 | ||
a0ed51b3 | 340 | STATIC I32 |
cea2e8a9 | 341 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
342 | { |
343 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
344 | if (count) { | |
dfe13c55 GS |
345 | U8* tmps; |
346 | U8* tend; | |
347 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 348 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 349 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
350 | |
351 | } | |
352 | return count; | |
353 | } | |
354 | ||
355 | STATIC I32 | |
cea2e8a9 | 356 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
357 | { |
358 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
359 | if (count) { | |
dfe13c55 GS |
360 | U8* tmps; |
361 | U8* tend; | |
362 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 363 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 364 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
365 | |
366 | } | |
367 | return count; | |
368 | } | |
a868473f | 369 | |
ffb4593c NT |
370 | /* |
371 | * Perl_lex_start | |
9cbb5ea2 GS |
372 | * Initialize variables. Uses the Perl save_stack to save its state (for |
373 | * recursive calls to the parser). | |
ffb4593c NT |
374 | */ |
375 | ||
a0d0e21e | 376 | void |
864dbfa3 | 377 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 378 | { |
0f15f207 | 379 | dTHR; |
8990e307 LW |
380 | char *s; |
381 | STRLEN len; | |
382 | ||
3280af22 NIS |
383 | SAVEI32(PL_lex_dojoin); |
384 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
385 | SAVEI32(PL_lex_casemods); |
386 | SAVEI32(PL_lex_starts); | |
387 | SAVEI32(PL_lex_state); | |
7766f137 | 388 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 389 | SAVEI32(PL_lex_inwhat); |
57843af0 | 390 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
391 | SAVEPPTR(PL_bufptr); |
392 | SAVEPPTR(PL_bufend); | |
393 | SAVEPPTR(PL_oldbufptr); | |
394 | SAVEPPTR(PL_oldoldbufptr); | |
395 | SAVEPPTR(PL_linestart); | |
396 | SAVESPTR(PL_linestr); | |
397 | SAVEPPTR(PL_lex_brackstack); | |
398 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 399 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
400 | SAVESPTR(PL_lex_stuff); |
401 | SAVEI32(PL_lex_defer); | |
09bef843 | 402 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 403 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
404 | SAVEINT(PL_expect); |
405 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
406 | |
407 | PL_lex_state = LEX_NORMAL; | |
408 | PL_lex_defer = 0; | |
409 | PL_expect = XSTATE; | |
410 | PL_lex_brackets = 0; | |
3280af22 NIS |
411 | New(899, PL_lex_brackstack, 120, char); |
412 | New(899, PL_lex_casestack, 12, char); | |
413 | SAVEFREEPV(PL_lex_brackstack); | |
414 | SAVEFREEPV(PL_lex_casestack); | |
415 | PL_lex_casemods = 0; | |
416 | *PL_lex_casestack = '\0'; | |
417 | PL_lex_dojoin = 0; | |
418 | PL_lex_starts = 0; | |
419 | PL_lex_stuff = Nullsv; | |
420 | PL_lex_repl = Nullsv; | |
421 | PL_lex_inpat = 0; | |
422 | PL_lex_inwhat = 0; | |
09bef843 | 423 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
424 | PL_linestr = line; |
425 | if (SvREADONLY(PL_linestr)) | |
426 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
427 | s = SvPV(PL_linestr, len); | |
8990e307 | 428 | if (len && s[len-1] != ';') { |
3280af22 NIS |
429 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
430 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
431 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 432 | } |
3280af22 NIS |
433 | SvTEMP_off(PL_linestr); |
434 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
435 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
436 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 437 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 438 | PL_rsfp = 0; |
79072805 | 439 | } |
a687059c | 440 | |
ffb4593c NT |
441 | /* |
442 | * Perl_lex_end | |
9cbb5ea2 GS |
443 | * Finalizer for lexing operations. Must be called when the parser is |
444 | * done with the lexer. | |
ffb4593c NT |
445 | */ |
446 | ||
463ee0b2 | 447 | void |
864dbfa3 | 448 | Perl_lex_end(pTHX) |
463ee0b2 | 449 | { |
3280af22 | 450 | PL_doextract = FALSE; |
463ee0b2 LW |
451 | } |
452 | ||
ffb4593c NT |
453 | /* |
454 | * S_incline | |
455 | * This subroutine has nothing to do with tilting, whether at windmills | |
456 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 457 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 458 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
459 | * # line 500 "foo.pm" |
460 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
461 | */ |
462 | ||
76e3520e | 463 | STATIC void |
cea2e8a9 | 464 | S_incline(pTHX_ char *s) |
463ee0b2 | 465 | { |
0f15f207 | 466 | dTHR; |
463ee0b2 LW |
467 | char *t; |
468 | char *n; | |
469 | char ch; | |
470 | int sawline = 0; | |
471 | ||
57843af0 | 472 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
473 | if (*s++ != '#') |
474 | return; | |
475 | while (*s == ' ' || *s == '\t') s++; | |
476 | if (strnEQ(s, "line ", 5)) { | |
477 | s += 5; | |
478 | sawline = 1; | |
479 | } | |
480 | if (!isDIGIT(*s)) | |
481 | return; | |
482 | n = s; | |
483 | while (isDIGIT(*s)) | |
484 | s++; | |
485 | while (*s == ' ' || *s == '\t') | |
486 | s++; | |
487 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
488 | s++; | |
489 | else { | |
490 | if (!sawline) | |
491 | return; /* false alarm */ | |
492 | for (t = s; !isSPACE(*t); t++) ; | |
493 | } | |
494 | ch = *t; | |
495 | *t = '\0'; | |
496 | if (t - s > 0) | |
57843af0 | 497 | CopFILE_set(PL_curcop, s); |
463ee0b2 | 498 | else |
57843af0 | 499 | CopFILE_set(PL_curcop, PL_origfilename); |
463ee0b2 | 500 | *t = ch; |
57843af0 | 501 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
502 | } |
503 | ||
ffb4593c NT |
504 | /* |
505 | * S_skipspace | |
506 | * Called to gobble the appropriate amount and type of whitespace. | |
507 | * Skips comments as well. | |
508 | */ | |
509 | ||
76e3520e | 510 | STATIC char * |
cea2e8a9 | 511 | S_skipspace(pTHX_ register char *s) |
a687059c | 512 | { |
11343788 | 513 | dTHR; |
3280af22 NIS |
514 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
515 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
516 | s++; |
517 | return s; | |
518 | } | |
519 | for (;;) { | |
fd049845 | 520 | STRLEN prevlen; |
09bef843 SB |
521 | SSize_t oldprevlen, oldoldprevlen; |
522 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
523 | while (s < PL_bufend && isSPACE(*s)) { |
524 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
525 | incline(s); | |
526 | } | |
ffb4593c NT |
527 | |
528 | /* comment */ | |
3280af22 NIS |
529 | if (s < PL_bufend && *s == '#') { |
530 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 531 | s++; |
60e6418e | 532 | if (s < PL_bufend) { |
463ee0b2 | 533 | s++; |
60e6418e GS |
534 | if (PL_in_eval && !PL_rsfp) { |
535 | incline(s); | |
536 | continue; | |
537 | } | |
538 | } | |
463ee0b2 | 539 | } |
ffb4593c NT |
540 | |
541 | /* only continue to recharge the buffer if we're at the end | |
542 | * of the buffer, we're not reading from a source filter, and | |
543 | * we're in normal lexing mode | |
544 | */ | |
09bef843 SB |
545 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
546 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 547 | return s; |
ffb4593c NT |
548 | |
549 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
550 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
551 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
552 | { | |
553 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
554 | if (PL_minus_n || PL_minus_p) { |
555 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
556 | ";}continue{print or die qq(-p destination: $!\\n)" : |
557 | ""); | |
3280af22 NIS |
558 | sv_catpv(PL_linestr,";}"); |
559 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
560 | } |
561 | else | |
3280af22 | 562 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
563 | |
564 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
565 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
566 | = SvPVX(PL_linestr); | |
3280af22 | 567 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
568 | |
569 | /* Close the filehandle. Could be from -P preprocessor, | |
570 | * STDIN, or a regular file. If we were reading code from | |
571 | * STDIN (because the commandline held no -e or filename) | |
572 | * then we don't close it, we reset it so the code can | |
573 | * read from STDIN too. | |
574 | */ | |
575 | ||
3280af22 NIS |
576 | if (PL_preprocess && !PL_in_eval) |
577 | (void)PerlProc_pclose(PL_rsfp); | |
578 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
579 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 580 | else |
3280af22 NIS |
581 | (void)PerlIO_close(PL_rsfp); |
582 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
583 | return s; |
584 | } | |
ffb4593c NT |
585 | |
586 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
587 | /* make corresponding updates to old pointers, for yyerror() */ |
588 | oldprevlen = PL_oldbufptr - PL_bufend; | |
589 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
590 | if (PL_last_uni) | |
591 | oldunilen = PL_last_uni - PL_bufend; | |
592 | if (PL_last_lop) | |
593 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
594 | PL_linestart = PL_bufptr = s + prevlen; |
595 | PL_bufend = s + SvCUR(PL_linestr); | |
596 | s = PL_bufptr; | |
09bef843 SB |
597 | PL_oldbufptr = s + oldprevlen; |
598 | PL_oldoldbufptr = s + oldoldprevlen; | |
599 | if (PL_last_uni) | |
600 | PL_last_uni = s + oldunilen; | |
601 | if (PL_last_lop) | |
602 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 603 | incline(s); |
ffb4593c NT |
604 | |
605 | /* debugger active and we're not compiling the debugger code, | |
606 | * so store the line into the debugger's array of lines | |
607 | */ | |
3280af22 | 608 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
609 | SV *sv = NEWSV(85,0); |
610 | ||
611 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 612 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 613 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 614 | } |
463ee0b2 | 615 | } |
a687059c | 616 | } |
378cc40b | 617 | |
ffb4593c NT |
618 | /* |
619 | * S_check_uni | |
620 | * Check the unary operators to ensure there's no ambiguity in how they're | |
621 | * used. An ambiguous piece of code would be: | |
622 | * rand + 5 | |
623 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
624 | * the +5 is its argument. | |
625 | */ | |
626 | ||
76e3520e | 627 | STATIC void |
cea2e8a9 | 628 | S_check_uni(pTHX) |
ba106d47 | 629 | { |
2f3197b3 | 630 | char *s; |
a0d0e21e | 631 | char *t; |
0453d815 | 632 | dTHR; |
2f3197b3 | 633 | |
3280af22 | 634 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 635 | return; |
3280af22 NIS |
636 | while (isSPACE(*PL_last_uni)) |
637 | PL_last_uni++; | |
834a4ddd | 638 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 639 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 640 | return; |
0453d815 | 641 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 642 | char ch = *s; |
0453d815 PM |
643 | *s = '\0'; |
644 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
645 | "Warning: Use of \"%s\" without parens is ambiguous", | |
646 | PL_last_uni); | |
647 | *s = ch; | |
648 | } | |
2f3197b3 LW |
649 | } |
650 | ||
ffb4593c NT |
651 | /* workaround to replace the UNI() macro with a function. Only the |
652 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
653 | * source indicate Microport Unix might need it too. | |
654 | */ | |
655 | ||
ffed7fef LW |
656 | #ifdef CRIPPLED_CC |
657 | ||
658 | #undef UNI | |
ffed7fef | 659 | #define UNI(f) return uni(f,s) |
ffed7fef | 660 | |
76e3520e | 661 | STATIC int |
cea2e8a9 | 662 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
663 | { |
664 | yylval.ival = f; | |
3280af22 NIS |
665 | PL_expect = XTERM; |
666 | PL_bufptr = s; | |
8f872242 NIS |
667 | PL_last_uni = PL_oldbufptr; |
668 | PL_last_lop_op = f; | |
ffed7fef LW |
669 | if (*s == '(') |
670 | return FUNC1; | |
671 | s = skipspace(s); | |
672 | if (*s == '(') | |
673 | return FUNC1; | |
674 | else | |
675 | return UNIOP; | |
676 | } | |
677 | ||
a0d0e21e LW |
678 | #endif /* CRIPPLED_CC */ |
679 | ||
ffb4593c NT |
680 | /* |
681 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
682 | * with a subroutine, S_lop() for which LOP is just another name. | |
683 | */ | |
684 | ||
a0d0e21e LW |
685 | #define LOP(f,x) return lop(f,x,s) |
686 | ||
ffb4593c NT |
687 | /* |
688 | * S_lop | |
689 | * Build a list operator (or something that might be one). The rules: | |
690 | * - if we have a next token, then it's a list operator [why?] | |
691 | * - if the next thing is an opening paren, then it's a function | |
692 | * - else it's a list operator | |
693 | */ | |
694 | ||
76e3520e | 695 | STATIC I32 |
a0be28da | 696 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 697 | { |
0f15f207 | 698 | dTHR; |
79072805 | 699 | yylval.ival = f; |
35c8bce7 | 700 | CLINE; |
3280af22 NIS |
701 | PL_expect = x; |
702 | PL_bufptr = s; | |
703 | PL_last_lop = PL_oldbufptr; | |
704 | PL_last_lop_op = f; | |
705 | if (PL_nexttoke) | |
a0d0e21e | 706 | return LSTOP; |
79072805 LW |
707 | if (*s == '(') |
708 | return FUNC; | |
709 | s = skipspace(s); | |
710 | if (*s == '(') | |
711 | return FUNC; | |
712 | else | |
713 | return LSTOP; | |
714 | } | |
715 | ||
ffb4593c NT |
716 | /* |
717 | * S_force_next | |
9cbb5ea2 | 718 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 719 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
720 | * to know what token to return the next time the lexer is called. Caller |
721 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
722 | * handles the token correctly. | |
ffb4593c NT |
723 | */ |
724 | ||
76e3520e | 725 | STATIC void |
cea2e8a9 | 726 | S_force_next(pTHX_ I32 type) |
79072805 | 727 | { |
3280af22 NIS |
728 | PL_nexttype[PL_nexttoke] = type; |
729 | PL_nexttoke++; | |
730 | if (PL_lex_state != LEX_KNOWNEXT) { | |
731 | PL_lex_defer = PL_lex_state; | |
732 | PL_lex_expect = PL_expect; | |
733 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
734 | } |
735 | } | |
736 | ||
ffb4593c NT |
737 | /* |
738 | * S_force_word | |
739 | * When the lexer knows the next thing is a word (for instance, it has | |
740 | * just seen -> and it knows that the next char is a word char, then | |
741 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
742 | * | |
743 | * Arguments: | |
b1b65b59 | 744 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
745 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
746 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
747 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
748 | * int allow_pack : if true, : characters will also be allowed (require, | |
749 | * use, etc. do this) | |
9cbb5ea2 | 750 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
751 | */ |
752 | ||
76e3520e | 753 | STATIC char * |
cea2e8a9 | 754 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 755 | { |
463ee0b2 LW |
756 | register char *s; |
757 | STRLEN len; | |
758 | ||
759 | start = skipspace(start); | |
760 | s = start; | |
834a4ddd | 761 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 762 | (allow_pack && *s == ':') || |
15f0808c | 763 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 764 | { |
3280af22 NIS |
765 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
766 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
767 | return start; |
768 | if (token == METHOD) { | |
769 | s = skipspace(s); | |
770 | if (*s == '(') | |
3280af22 | 771 | PL_expect = XTERM; |
463ee0b2 | 772 | else { |
3280af22 | 773 | PL_expect = XOPERATOR; |
463ee0b2 | 774 | } |
79072805 | 775 | } |
3280af22 NIS |
776 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
777 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
778 | force_next(token); |
779 | } | |
780 | return s; | |
781 | } | |
782 | ||
ffb4593c NT |
783 | /* |
784 | * S_force_ident | |
9cbb5ea2 | 785 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
786 | * text only contains the "foo" portion. The first argument is a pointer |
787 | * to the "foo", and the second argument is the type symbol to prefix. | |
788 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 789 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
790 | */ |
791 | ||
76e3520e | 792 | STATIC void |
cea2e8a9 | 793 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
794 | { |
795 | if (s && *s) { | |
11343788 | 796 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 797 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 798 | force_next(WORD); |
748a9306 | 799 | if (kind) { |
e858de61 | 800 | dTHR; /* just for in_eval */ |
11343788 | 801 | o->op_private = OPpCONST_ENTERED; |
55497cff | 802 | /* XXX see note in pp_entereval() for why we forgo typo |
803 | warnings if the symbol must be introduced in an eval. | |
804 | GSAR 96-10-12 */ | |
3280af22 | 805 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
806 | kind == '$' ? SVt_PV : |
807 | kind == '@' ? SVt_PVAV : | |
808 | kind == '%' ? SVt_PVHV : | |
809 | SVt_PVGV | |
810 | ); | |
748a9306 | 811 | } |
79072805 LW |
812 | } |
813 | } | |
814 | ||
ffb4593c NT |
815 | /* |
816 | * S_force_version | |
817 | * Forces the next token to be a version number. | |
818 | */ | |
819 | ||
76e3520e | 820 | STATIC char * |
cea2e8a9 | 821 | S_force_version(pTHX_ char *s) |
89bfa8cd | 822 | { |
823 | OP *version = Nullop; | |
824 | ||
825 | s = skipspace(s); | |
826 | ||
a7cb1f99 GS |
827 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
828 | char *d = s; | |
829 | if (*d == 'v') | |
830 | d++; | |
831 | for (; isDIGIT(*d) || *d == '_' || *d == '.'; d++); | |
832 | if ((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { | |
89bfa8cd | 833 | s = scan_num(s); |
834 | /* real VERSION number -- GBARR */ | |
835 | version = yylval.opval; | |
836 | } | |
837 | } | |
838 | ||
839 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 840 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 841 | force_next(WORD); |
842 | ||
843 | return (s); | |
844 | } | |
845 | ||
ffb4593c NT |
846 | /* |
847 | * S_tokeq | |
848 | * Tokenize a quoted string passed in as an SV. It finds the next | |
849 | * chunk, up to end of string or a backslash. It may make a new | |
850 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
851 | * turns \\ into \. | |
852 | */ | |
853 | ||
76e3520e | 854 | STATIC SV * |
cea2e8a9 | 855 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
856 | { |
857 | register char *s; | |
858 | register char *send; | |
859 | register char *d; | |
b3ac6de7 IZ |
860 | STRLEN len = 0; |
861 | SV *pv = sv; | |
79072805 LW |
862 | |
863 | if (!SvLEN(sv)) | |
b3ac6de7 | 864 | goto finish; |
79072805 | 865 | |
a0d0e21e | 866 | s = SvPV_force(sv, len); |
748a9306 | 867 | if (SvIVX(sv) == -1) |
b3ac6de7 | 868 | goto finish; |
463ee0b2 | 869 | send = s + len; |
79072805 LW |
870 | while (s < send && *s != '\\') |
871 | s++; | |
872 | if (s == send) | |
b3ac6de7 | 873 | goto finish; |
79072805 | 874 | d = s; |
3280af22 | 875 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 876 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
877 | while (s < send) { |
878 | if (*s == '\\') { | |
a0d0e21e | 879 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
880 | s++; /* all that, just for this */ |
881 | } | |
882 | *d++ = *s++; | |
883 | } | |
884 | *d = '\0'; | |
463ee0b2 | 885 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 886 | finish: |
3280af22 | 887 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 888 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
889 | return sv; |
890 | } | |
891 | ||
ffb4593c NT |
892 | /* |
893 | * Now come three functions related to double-quote context, | |
894 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
895 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
896 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
897 | * to handle functions and concatenation. | |
898 | * They assume that whoever calls them will be setting up a fake | |
899 | * join call, because each subthing puts a ',' after it. This lets | |
900 | * "lower \luPpEr" | |
901 | * become | |
902 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
903 | * | |
904 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
905 | * arguments and join's arguments are created or not). | |
906 | */ | |
907 | ||
908 | /* | |
909 | * S_sublex_start | |
910 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
911 | * | |
912 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
913 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
914 | * | |
915 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
916 | * | |
917 | * Everything else becomes a FUNC. | |
918 | * | |
919 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
920 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
921 | * call to S_sublex_push(). | |
922 | */ | |
923 | ||
76e3520e | 924 | STATIC I32 |
cea2e8a9 | 925 | S_sublex_start(pTHX) |
79072805 LW |
926 | { |
927 | register I32 op_type = yylval.ival; | |
79072805 LW |
928 | |
929 | if (op_type == OP_NULL) { | |
3280af22 NIS |
930 | yylval.opval = PL_lex_op; |
931 | PL_lex_op = Nullop; | |
79072805 LW |
932 | return THING; |
933 | } | |
934 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 935 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
936 | |
937 | if (SvTYPE(sv) == SVt_PVIV) { | |
938 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
939 | STRLEN len; | |
940 | char *p; | |
941 | SV *nsv; | |
942 | ||
943 | p = SvPV(sv, len); | |
79cb57f6 | 944 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
945 | SvREFCNT_dec(sv); |
946 | sv = nsv; | |
947 | } | |
948 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 949 | PL_lex_stuff = Nullsv; |
79072805 LW |
950 | return THING; |
951 | } | |
952 | ||
3280af22 NIS |
953 | PL_sublex_info.super_state = PL_lex_state; |
954 | PL_sublex_info.sub_inwhat = op_type; | |
955 | PL_sublex_info.sub_op = PL_lex_op; | |
956 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 957 | |
3280af22 NIS |
958 | PL_expect = XTERM; |
959 | if (PL_lex_op) { | |
960 | yylval.opval = PL_lex_op; | |
961 | PL_lex_op = Nullop; | |
55497cff | 962 | return PMFUNC; |
963 | } | |
964 | else | |
965 | return FUNC; | |
966 | } | |
967 | ||
ffb4593c NT |
968 | /* |
969 | * S_sublex_push | |
970 | * Create a new scope to save the lexing state. The scope will be | |
971 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
972 | * to the uc, lc, etc. found before. | |
973 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
974 | */ | |
975 | ||
76e3520e | 976 | STATIC I32 |
cea2e8a9 | 977 | S_sublex_push(pTHX) |
55497cff | 978 | { |
0f15f207 | 979 | dTHR; |
f46d017c | 980 | ENTER; |
55497cff | 981 | |
3280af22 NIS |
982 | PL_lex_state = PL_sublex_info.super_state; |
983 | SAVEI32(PL_lex_dojoin); | |
984 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
985 | SAVEI32(PL_lex_casemods); |
986 | SAVEI32(PL_lex_starts); | |
987 | SAVEI32(PL_lex_state); | |
7766f137 | 988 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 989 | SAVEI32(PL_lex_inwhat); |
57843af0 | 990 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
991 | SAVEPPTR(PL_bufptr); |
992 | SAVEPPTR(PL_oldbufptr); | |
993 | SAVEPPTR(PL_oldoldbufptr); | |
994 | SAVEPPTR(PL_linestart); | |
995 | SAVESPTR(PL_linestr); | |
996 | SAVEPPTR(PL_lex_brackstack); | |
997 | SAVEPPTR(PL_lex_casestack); | |
998 | ||
999 | PL_linestr = PL_lex_stuff; | |
1000 | PL_lex_stuff = Nullsv; | |
1001 | ||
9cbb5ea2 GS |
1002 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1003 | = SvPVX(PL_linestr); | |
3280af22 NIS |
1004 | PL_bufend += SvCUR(PL_linestr); |
1005 | SAVEFREESV(PL_linestr); | |
1006 | ||
1007 | PL_lex_dojoin = FALSE; | |
1008 | PL_lex_brackets = 0; | |
3280af22 NIS |
1009 | New(899, PL_lex_brackstack, 120, char); |
1010 | New(899, PL_lex_casestack, 12, char); | |
1011 | SAVEFREEPV(PL_lex_brackstack); | |
1012 | SAVEFREEPV(PL_lex_casestack); | |
1013 | PL_lex_casemods = 0; | |
1014 | *PL_lex_casestack = '\0'; | |
1015 | PL_lex_starts = 0; | |
1016 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1017 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1018 | |
1019 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1020 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1021 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1022 | else |
3280af22 | 1023 | PL_lex_inpat = Nullop; |
79072805 | 1024 | |
55497cff | 1025 | return '('; |
79072805 LW |
1026 | } |
1027 | ||
ffb4593c NT |
1028 | /* |
1029 | * S_sublex_done | |
1030 | * Restores lexer state after a S_sublex_push. | |
1031 | */ | |
1032 | ||
76e3520e | 1033 | STATIC I32 |
cea2e8a9 | 1034 | S_sublex_done(pTHX) |
79072805 | 1035 | { |
3280af22 NIS |
1036 | if (!PL_lex_starts++) { |
1037 | PL_expect = XOPERATOR; | |
79cb57f6 | 1038 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1039 | return THING; |
1040 | } | |
1041 | ||
3280af22 NIS |
1042 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1043 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1044 | return yylex(); |
79072805 LW |
1045 | } |
1046 | ||
ffb4593c | 1047 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1048 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1049 | PL_linestr = PL_lex_repl; | |
1050 | PL_lex_inpat = 0; | |
1051 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1052 | PL_bufend += SvCUR(PL_linestr); | |
1053 | SAVEFREESV(PL_linestr); | |
1054 | PL_lex_dojoin = FALSE; | |
1055 | PL_lex_brackets = 0; | |
3280af22 NIS |
1056 | PL_lex_casemods = 0; |
1057 | *PL_lex_casestack = '\0'; | |
1058 | PL_lex_starts = 0; | |
25da4f38 | 1059 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1060 | PL_lex_state = LEX_INTERPNORMAL; |
1061 | PL_lex_starts++; | |
e9fa98b2 HS |
1062 | /* we don't clear PL_lex_repl here, so that we can check later |
1063 | whether this is an evalled subst; that means we rely on the | |
1064 | logic to ensure sublex_done() is called again only via the | |
1065 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1066 | } |
e9fa98b2 | 1067 | else { |
3280af22 | 1068 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1069 | PL_lex_repl = Nullsv; |
1070 | } | |
79072805 | 1071 | return ','; |
ffed7fef LW |
1072 | } |
1073 | else { | |
f46d017c | 1074 | LEAVE; |
3280af22 NIS |
1075 | PL_bufend = SvPVX(PL_linestr); |
1076 | PL_bufend += SvCUR(PL_linestr); | |
1077 | PL_expect = XOPERATOR; | |
09bef843 | 1078 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1079 | return ')'; |
ffed7fef LW |
1080 | } |
1081 | } | |
1082 | ||
02aa26ce NT |
1083 | /* |
1084 | scan_const | |
1085 | ||
1086 | Extracts a pattern, double-quoted string, or transliteration. This | |
1087 | is terrifying code. | |
1088 | ||
3280af22 NIS |
1089 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1090 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1091 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1092 | ||
9b599b2a GS |
1093 | Returns a pointer to the character scanned up to. Iff this is |
1094 | advanced from the start pointer supplied (ie if anything was | |
1095 | successfully parsed), will leave an OP for the substring scanned | |
1096 | in yylval. Caller must intuit reason for not parsing further | |
1097 | by looking at the next characters herself. | |
1098 | ||
02aa26ce NT |
1099 | In patterns: |
1100 | backslashes: | |
1101 | double-quoted style: \r and \n | |
1102 | regexp special ones: \D \s | |
1103 | constants: \x3 | |
1104 | backrefs: \1 (deprecated in substitution replacements) | |
1105 | case and quoting: \U \Q \E | |
1106 | stops on @ and $, but not for $ as tail anchor | |
1107 | ||
1108 | In transliterations: | |
1109 | characters are VERY literal, except for - not at the start or end | |
1110 | of the string, which indicates a range. scan_const expands the | |
1111 | range to the full set of intermediate characters. | |
1112 | ||
1113 | In double-quoted strings: | |
1114 | backslashes: | |
1115 | double-quoted style: \r and \n | |
1116 | constants: \x3 | |
1117 | backrefs: \1 (deprecated) | |
1118 | case and quoting: \U \Q \E | |
1119 | stops on @ and $ | |
1120 | ||
1121 | scan_const does *not* construct ops to handle interpolated strings. | |
1122 | It stops processing as soon as it finds an embedded $ or @ variable | |
1123 | and leaves it to the caller to work out what's going on. | |
1124 | ||
1125 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1126 | ||
1127 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1128 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1129 | followed by one of ")| \n\t" | |
1130 | ||
1131 | \1 (backreferences) are turned into $1 | |
1132 | ||
1133 | The structure of the code is | |
1134 | while (there's a character to process) { | |
1135 | handle transliteration ranges | |
1136 | skip regexp comments | |
1137 | skip # initiated comments in //x patterns | |
1138 | check for embedded @foo | |
1139 | check for embedded scalars | |
1140 | if (backslash) { | |
1141 | leave intact backslashes from leave (below) | |
1142 | deprecate \1 in strings and sub replacements | |
1143 | handle string-changing backslashes \l \U \Q \E, etc. | |
1144 | switch (what was escaped) { | |
1145 | handle - in a transliteration (becomes a literal -) | |
1146 | handle \132 octal characters | |
1147 | handle 0x15 hex characters | |
1148 | handle \cV (control V) | |
1149 | handle printf backslashes (\f, \r, \n, etc) | |
1150 | } (end switch) | |
1151 | } (end if backslash) | |
1152 | } (end while character to read) | |
1153 | ||
1154 | */ | |
1155 | ||
76e3520e | 1156 | STATIC char * |
cea2e8a9 | 1157 | S_scan_const(pTHX_ char *start) |
79072805 | 1158 | { |
3280af22 | 1159 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1160 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1161 | register char *s = start; /* start of the constant */ | |
1162 | register char *d = SvPVX(sv); /* destination for copies */ | |
1163 | bool dorange = FALSE; /* are we in a translit range? */ | |
1164 | I32 len; /* ? */ | |
ac2262e3 | 1165 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1166 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1167 | : UTF; | |
ac2262e3 | 1168 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1169 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1170 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1171 | : UTF; |
dff6d3cd | 1172 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1173 | PL_lex_inpat |
4a2d328f | 1174 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1175 | : ""; |
79072805 LW |
1176 | |
1177 | while (s < send || dorange) { | |
02aa26ce | 1178 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1179 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1180 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1181 | if (dorange) { |
02aa26ce | 1182 | I32 i; /* current expanded character */ |
8ada0baa | 1183 | I32 min; /* first character in range */ |
02aa26ce NT |
1184 | I32 max; /* last character in range */ |
1185 | ||
1186 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1187 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1188 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1189 | d -= 2; /* eat the first char and the - */ |
1190 | ||
8ada0baa JH |
1191 | min = (U8)*d; /* first char in range */ |
1192 | max = (U8)d[1]; /* last char in range */ | |
1193 | ||
1194 | #ifndef ASCIIish | |
1195 | if ((isLOWER(min) && isLOWER(max)) || | |
1196 | (isUPPER(min) && isUPPER(max))) { | |
1197 | if (isLOWER(min)) { | |
1198 | for (i = min; i <= max; i++) | |
1199 | if (isLOWER(i)) | |
1200 | *d++ = i; | |
1201 | } else { | |
1202 | for (i = min; i <= max; i++) | |
1203 | if (isUPPER(i)) | |
1204 | *d++ = i; | |
1205 | } | |
1206 | } | |
1207 | else | |
1208 | #endif | |
1209 | for (i = min; i <= max; i++) | |
1210 | *d++ = i; | |
02aa26ce NT |
1211 | |
1212 | /* mark the range as done, and continue */ | |
79072805 LW |
1213 | dorange = FALSE; |
1214 | continue; | |
1215 | } | |
02aa26ce NT |
1216 | |
1217 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1218 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1219 | if (utf) { |
a176fa2a | 1220 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1221 | s++; |
1222 | continue; | |
1223 | } | |
79072805 LW |
1224 | dorange = TRUE; |
1225 | s++; | |
1226 | } | |
1227 | } | |
02aa26ce NT |
1228 | |
1229 | /* if we get here, we're not doing a transliteration */ | |
1230 | ||
0f5d15d6 IZ |
1231 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1232 | except for the last char, which will be done separately. */ | |
3280af22 | 1233 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1234 | if (s[2] == '#') { |
1235 | while (s < send && *s != ')') | |
1236 | *d++ = *s++; | |
0f5d15d6 IZ |
1237 | } else if (s[2] == '{' |
1238 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1239 | I32 count = 1; |
0f5d15d6 | 1240 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1241 | char c; |
1242 | ||
d9f97599 GS |
1243 | while (count && (c = *regparse)) { |
1244 | if (c == '\\' && regparse[1]) | |
1245 | regparse++; | |
cc6b7395 IZ |
1246 | else if (c == '{') |
1247 | count++; | |
1248 | else if (c == '}') | |
1249 | count--; | |
d9f97599 | 1250 | regparse++; |
cc6b7395 | 1251 | } |
5bdf89e7 IZ |
1252 | if (*regparse != ')') { |
1253 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1254 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1255 | } |
0f5d15d6 | 1256 | while (s < regparse) |
cc6b7395 IZ |
1257 | *d++ = *s++; |
1258 | } | |
748a9306 | 1259 | } |
02aa26ce NT |
1260 | |
1261 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1262 | else if (*s == '#' && PL_lex_inpat && |
1263 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1264 | while (s+1 < send && *s != '\n') |
1265 | *d++ = *s++; | |
1266 | } | |
02aa26ce NT |
1267 | |
1268 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1269 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1270 | break; |
02aa26ce NT |
1271 | |
1272 | /* check for embedded scalars. only stop if we're sure it's a | |
1273 | variable. | |
1274 | */ | |
79072805 | 1275 | else if (*s == '$') { |
3280af22 | 1276 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1277 | break; |
c277df42 | 1278 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1279 | break; /* in regexp, $ might be tail anchor */ |
1280 | } | |
02aa26ce | 1281 | |
a0ed51b3 LW |
1282 | /* (now in tr/// code again) */ |
1283 | ||
d008e5eb GS |
1284 | if (*s & 0x80 && thisutf) { |
1285 | dTHR; /* only for ckWARN */ | |
1286 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1287 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1288 | if (len) { |
1289 | while (len--) | |
1290 | *d++ = *s++; | |
1291 | continue; | |
1292 | } | |
a0ed51b3 LW |
1293 | } |
1294 | } | |
1295 | ||
02aa26ce | 1296 | /* backslashes */ |
79072805 LW |
1297 | if (*s == '\\' && s+1 < send) { |
1298 | s++; | |
02aa26ce NT |
1299 | |
1300 | /* some backslashes we leave behind */ | |
c9f97d15 | 1301 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1302 | *d++ = '\\'; |
1303 | *d++ = *s++; | |
1304 | continue; | |
1305 | } | |
02aa26ce NT |
1306 | |
1307 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1308 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1309 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1310 | { |
d008e5eb | 1311 | dTHR; /* only for ckWARN */ |
599cee73 | 1312 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1313 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1314 | *--s = '$'; |
1315 | break; | |
1316 | } | |
02aa26ce NT |
1317 | |
1318 | /* string-change backslash escapes */ | |
3280af22 | 1319 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1320 | --s; |
1321 | break; | |
1322 | } | |
02aa26ce NT |
1323 | |
1324 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1325 | switch (*s) { |
02aa26ce NT |
1326 | |
1327 | /* quoted - in transliterations */ | |
79072805 | 1328 | case '-': |
3280af22 | 1329 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1330 | *d++ = *s++; |
1331 | continue; | |
1332 | } | |
1333 | /* FALL THROUGH */ | |
1334 | default: | |
11b8faa4 JH |
1335 | { |
1336 | dTHR; | |
1337 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
cea2e8a9 | 1338 | Perl_warner(aTHX_ WARN_UNSAFE, |
11b8faa4 JH |
1339 | "Unrecognized escape \\%c passed through", |
1340 | *s); | |
1341 | /* default action is to copy the quoted character */ | |
1342 | *d++ = *s++; | |
1343 | continue; | |
1344 | } | |
02aa26ce NT |
1345 | |
1346 | /* \132 indicates an octal constant */ | |
79072805 LW |
1347 | case '0': case '1': case '2': case '3': |
1348 | case '4': case '5': case '6': case '7': | |
dff6d3cd | 1349 | *d++ = (char)scan_oct(s, 3, &len); |
79072805 LW |
1350 | s += len; |
1351 | continue; | |
02aa26ce NT |
1352 | |
1353 | /* \x24 indicates a hex constant */ | |
79072805 | 1354 | case 'x': |
a0ed51b3 LW |
1355 | ++s; |
1356 | if (*s == '{') { | |
1357 | char* e = strchr(s, '}'); | |
1358 | ||
adaeee49 | 1359 | if (!e) { |
a0ed51b3 | 1360 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1361 | e = s; |
1362 | } | |
d008e5eb GS |
1363 | if (!utf) { |
1364 | dTHR; | |
1365 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1366 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1367 | "Use of \\x{} without utf8 declaration"); |
1368 | } | |
a0ed51b3 | 1369 | /* note: utf always shorter than hex */ |
dfe13c55 | 1370 | d = (char*)uv_to_utf8((U8*)d, |
dff6d3cd | 1371 | (UV)scan_hex(s + 1, e - s - 1, &len)); |
a0ed51b3 | 1372 | s = e + 1; |
a0ed51b3 LW |
1373 | } |
1374 | else { | |
1375 | UV uv = (UV)scan_hex(s, 2, &len); | |
1376 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1377 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1378 | { | |
dfe13c55 | 1379 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1380 | } |
1381 | else { | |
d008e5eb GS |
1382 | if (uv >= 127 && UTF) { |
1383 | dTHR; | |
1384 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1385 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1386 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", |
1387 | len,s,len,s); | |
1388 | } | |
a0ed51b3 LW |
1389 | *d++ = (char)uv; |
1390 | } | |
1391 | s += len; | |
1392 | } | |
79072805 | 1393 | continue; |
02aa26ce | 1394 | |
4a2d328f IZ |
1395 | /* \N{latin small letter a} is a named character */ |
1396 | case 'N': | |
423cee85 JH |
1397 | ++s; |
1398 | if (*s == '{') { | |
1399 | char* e = strchr(s, '}'); | |
1400 | HV *hv; | |
1401 | SV **svp; | |
1402 | SV *res, *cv; | |
1403 | STRLEN len; | |
1404 | char *str; | |
1405 | char *why = Nullch; | |
1406 | ||
1407 | if (!e) { | |
5777a3f7 | 1408 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1409 | e = s - 1; |
1410 | goto cont_scan; | |
1411 | } | |
1412 | res = newSVpvn(s + 1, e - s - 1); | |
1413 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1414 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1415 | str = SvPV(res,len); |
1416 | if (len > e - s + 4) { | |
1417 | char *odest = SvPVX(sv); | |
1418 | ||
1419 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1420 | d = SvPVX(sv) + (d - odest); | |
1421 | } | |
1422 | Copy(str, d, len, char); | |
1423 | d += len; | |
1424 | SvREFCNT_dec(res); | |
1425 | cont_scan: | |
1426 | s = e + 1; | |
1427 | } | |
1428 | else | |
5777a3f7 | 1429 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1430 | continue; |
1431 | ||
02aa26ce | 1432 | /* \c is a control character */ |
79072805 LW |
1433 | case 'c': |
1434 | s++; | |
9d116dd7 JH |
1435 | #ifdef EBCDIC |
1436 | *d = *s++; | |
1437 | if (isLOWER(*d)) | |
1438 | *d = toUPPER(*d); | |
1439 | *d++ = toCTRL(*d); | |
1440 | #else | |
bbce6d69 | 1441 | len = *s++; |
1442 | *d++ = toCTRL(len); | |
9d116dd7 | 1443 | #endif |
79072805 | 1444 | continue; |
02aa26ce NT |
1445 | |
1446 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1447 | case 'b': |
1448 | *d++ = '\b'; | |
1449 | break; | |
1450 | case 'n': | |
1451 | *d++ = '\n'; | |
1452 | break; | |
1453 | case 'r': | |
1454 | *d++ = '\r'; | |
1455 | break; | |
1456 | case 'f': | |
1457 | *d++ = '\f'; | |
1458 | break; | |
1459 | case 't': | |
1460 | *d++ = '\t'; | |
1461 | break; | |
34a3fe2a PP |
1462 | #ifdef EBCDIC |
1463 | case 'e': | |
1464 | *d++ = '\047'; /* CP 1047 */ | |
1465 | break; | |
1466 | case 'a': | |
1467 | *d++ = '\057'; /* CP 1047 */ | |
1468 | break; | |
1469 | #else | |
79072805 LW |
1470 | case 'e': |
1471 | *d++ = '\033'; | |
1472 | break; | |
1473 | case 'a': | |
1474 | *d++ = '\007'; | |
1475 | break; | |
34a3fe2a | 1476 | #endif |
02aa26ce NT |
1477 | } /* end switch */ |
1478 | ||
79072805 LW |
1479 | s++; |
1480 | continue; | |
02aa26ce NT |
1481 | } /* end if (backslash) */ |
1482 | ||
79072805 | 1483 | *d++ = *s++; |
02aa26ce NT |
1484 | } /* while loop to process each character */ |
1485 | ||
1486 | /* terminate the string and set up the sv */ | |
79072805 | 1487 | *d = '\0'; |
463ee0b2 | 1488 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1489 | SvPOK_on(sv); |
1490 | ||
02aa26ce | 1491 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1492 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1493 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1494 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1495 | } |
02aa26ce | 1496 | |
9b599b2a | 1497 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1498 | if (s > PL_bufptr) { |
1499 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1500 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1501 | sv, Nullsv, |
3280af22 | 1502 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1503 | ? "tr" |
3280af22 | 1504 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1505 | ? "s" |
1506 | : "qq"))); | |
79072805 | 1507 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1508 | } else |
8990e307 | 1509 | SvREFCNT_dec(sv); |
79072805 LW |
1510 | return s; |
1511 | } | |
1512 | ||
ffb4593c NT |
1513 | /* S_intuit_more |
1514 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1515 | * FALSE otherwise. | |
ffb4593c NT |
1516 | * |
1517 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1518 | * | |
1519 | * ->[ and ->{ return TRUE | |
1520 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1521 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1522 | * if we're in a pattern and the first char is a { | |
1523 | * {4,5} (any digits around the comma) returns FALSE | |
1524 | * if we're in a pattern and the first char is a [ | |
1525 | * [] returns FALSE | |
1526 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1527 | * character class or not. It has to deal with things like | |
1528 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1529 | * anything else returns TRUE | |
1530 | */ | |
1531 | ||
9cbb5ea2 GS |
1532 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1533 | ||
76e3520e | 1534 | STATIC int |
cea2e8a9 | 1535 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1536 | { |
3280af22 | 1537 | if (PL_lex_brackets) |
79072805 LW |
1538 | return TRUE; |
1539 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1540 | return TRUE; | |
1541 | if (*s != '{' && *s != '[') | |
1542 | return FALSE; | |
3280af22 | 1543 | if (!PL_lex_inpat) |
79072805 LW |
1544 | return TRUE; |
1545 | ||
1546 | /* In a pattern, so maybe we have {n,m}. */ | |
1547 | if (*s == '{') { | |
1548 | s++; | |
1549 | if (!isDIGIT(*s)) | |
1550 | return TRUE; | |
1551 | while (isDIGIT(*s)) | |
1552 | s++; | |
1553 | if (*s == ',') | |
1554 | s++; | |
1555 | while (isDIGIT(*s)) | |
1556 | s++; | |
1557 | if (*s == '}') | |
1558 | return FALSE; | |
1559 | return TRUE; | |
1560 | ||
1561 | } | |
1562 | ||
1563 | /* On the other hand, maybe we have a character class */ | |
1564 | ||
1565 | s++; | |
1566 | if (*s == ']' || *s == '^') | |
1567 | return FALSE; | |
1568 | else { | |
ffb4593c | 1569 | /* this is terrifying, and it works */ |
79072805 LW |
1570 | int weight = 2; /* let's weigh the evidence */ |
1571 | char seen[256]; | |
f27ffc4a | 1572 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1573 | char *send = strchr(s,']'); |
3280af22 | 1574 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1575 | |
1576 | if (!send) /* has to be an expression */ | |
1577 | return TRUE; | |
1578 | ||
1579 | Zero(seen,256,char); | |
1580 | if (*s == '$') | |
1581 | weight -= 3; | |
1582 | else if (isDIGIT(*s)) { | |
1583 | if (s[1] != ']') { | |
1584 | if (isDIGIT(s[1]) && s[2] == ']') | |
1585 | weight -= 10; | |
1586 | } | |
1587 | else | |
1588 | weight -= 100; | |
1589 | } | |
1590 | for (; s < send; s++) { | |
1591 | last_un_char = un_char; | |
1592 | un_char = (unsigned char)*s; | |
1593 | switch (*s) { | |
1594 | case '@': | |
1595 | case '&': | |
1596 | case '$': | |
1597 | weight -= seen[un_char] * 10; | |
834a4ddd | 1598 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1599 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1600 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1601 | weight -= 100; |
1602 | else | |
1603 | weight -= 10; | |
1604 | } | |
1605 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1606 | strchr("[#!%*<>()-=",s[1])) { |
1607 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1608 | weight -= 10; |
1609 | else | |
1610 | weight -= 1; | |
1611 | } | |
1612 | break; | |
1613 | case '\\': | |
1614 | un_char = 254; | |
1615 | if (s[1]) { | |
93a17b20 | 1616 | if (strchr("wds]",s[1])) |
79072805 LW |
1617 | weight += 100; |
1618 | else if (seen['\''] || seen['"']) | |
1619 | weight += 1; | |
93a17b20 | 1620 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1621 | weight += 40; |
1622 | else if (isDIGIT(s[1])) { | |
1623 | weight += 40; | |
1624 | while (s[1] && isDIGIT(s[1])) | |
1625 | s++; | |
1626 | } | |
1627 | } | |
1628 | else | |
1629 | weight += 100; | |
1630 | break; | |
1631 | case '-': | |
1632 | if (s[1] == '\\') | |
1633 | weight += 50; | |
93a17b20 | 1634 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1635 | weight += 30; |
93a17b20 | 1636 | if (strchr("zZ79~",s[1])) |
79072805 | 1637 | weight += 30; |
f27ffc4a GS |
1638 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1639 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1640 | break; |
1641 | default: | |
93a17b20 | 1642 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1643 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1644 | char *d = tmpbuf; | |
1645 | while (isALPHA(*s)) | |
1646 | *d++ = *s++; | |
1647 | *d = '\0'; | |
1648 | if (keyword(tmpbuf, d - tmpbuf)) | |
1649 | weight -= 150; | |
1650 | } | |
1651 | if (un_char == last_un_char + 1) | |
1652 | weight += 5; | |
1653 | weight -= seen[un_char]; | |
1654 | break; | |
1655 | } | |
1656 | seen[un_char]++; | |
1657 | } | |
1658 | if (weight >= 0) /* probably a character class */ | |
1659 | return FALSE; | |
1660 | } | |
1661 | ||
1662 | return TRUE; | |
1663 | } | |
ffed7fef | 1664 | |
ffb4593c NT |
1665 | /* |
1666 | * S_intuit_method | |
1667 | * | |
1668 | * Does all the checking to disambiguate | |
1669 | * foo bar | |
1670 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1671 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1672 | * | |
1673 | * First argument is the stuff after the first token, e.g. "bar". | |
1674 | * | |
1675 | * Not a method if bar is a filehandle. | |
1676 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1677 | * Not a method if it's really "Foo $bar" | |
1678 | * Method if it's "foo $bar" | |
1679 | * Not a method if it's really "print foo $bar" | |
1680 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1681 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
1682 | * Not a method if bar is a filehandle or package, but is quotd with | |
1683 | * => | |
1684 | */ | |
1685 | ||
76e3520e | 1686 | STATIC int |
cea2e8a9 | 1687 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1688 | { |
1689 | char *s = start + (*start == '$'); | |
3280af22 | 1690 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1691 | STRLEN len; |
1692 | GV* indirgv; | |
1693 | ||
1694 | if (gv) { | |
b6c543e3 | 1695 | CV *cv; |
a0d0e21e LW |
1696 | if (GvIO(gv)) |
1697 | return 0; | |
b6c543e3 IZ |
1698 | if ((cv = GvCVu(gv))) { |
1699 | char *proto = SvPVX(cv); | |
1700 | if (proto) { | |
1701 | if (*proto == ';') | |
1702 | proto++; | |
1703 | if (*proto == '*') | |
1704 | return 0; | |
1705 | } | |
1706 | } else | |
a0d0e21e LW |
1707 | gv = 0; |
1708 | } | |
8903cb82 | 1709 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1710 | /* start is the beginning of the possible filehandle/object, |
1711 | * and s is the end of it | |
1712 | * tmpbuf is a copy of it | |
1713 | */ | |
1714 | ||
a0d0e21e | 1715 | if (*start == '$') { |
3280af22 | 1716 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1717 | return 0; |
1718 | s = skipspace(s); | |
3280af22 NIS |
1719 | PL_bufptr = start; |
1720 | PL_expect = XREF; | |
a0d0e21e LW |
1721 | return *s == '(' ? FUNCMETH : METHOD; |
1722 | } | |
1723 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1724 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1725 | len -= 2; | |
1726 | tmpbuf[len] = '\0'; | |
1727 | goto bare_package; | |
1728 | } | |
1729 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1730 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1731 | return 0; |
1732 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1733 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1734 | s = skipspace(s); |
3280af22 | 1735 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1736 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1737 | bare_package: |
3280af22 | 1738 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1739 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1740 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1741 | PL_expect = XTERM; | |
a0d0e21e | 1742 | force_next(WORD); |
3280af22 | 1743 | PL_bufptr = s; |
a0d0e21e LW |
1744 | return *s == '(' ? FUNCMETH : METHOD; |
1745 | } | |
1746 | } | |
1747 | return 0; | |
1748 | } | |
1749 | ||
ffb4593c NT |
1750 | /* |
1751 | * S_incl_perldb | |
1752 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1753 | * is set, it will return the contents of that, otherwise a | |
1754 | * compile-time require of perl5db.pl. | |
1755 | */ | |
1756 | ||
76e3520e | 1757 | STATIC char* |
cea2e8a9 | 1758 | S_incl_perldb(pTHX) |
a0d0e21e | 1759 | { |
3280af22 | 1760 | if (PL_perldb) { |
76e3520e | 1761 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1762 | |
1763 | if (pdb) | |
1764 | return pdb; | |
61bb5906 | 1765 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1766 | return "BEGIN { require 'perl5db.pl' }"; |
1767 | } | |
1768 | return ""; | |
1769 | } | |
1770 | ||
1771 | ||
16d20bd9 AD |
1772 | /* Encoded script support. filter_add() effectively inserts a |
1773 | * 'pre-processing' function into the current source input stream. | |
1774 | * Note that the filter function only applies to the current source file | |
1775 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1776 | * | |
1777 | * The datasv parameter (which may be NULL) can be used to pass | |
1778 | * private data to this instance of the filter. The filter function | |
1779 | * can recover the SV using the FILTER_DATA macro and use it to | |
1780 | * store private buffers and state information. | |
1781 | * | |
1782 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1783 | * and the IoDIRP field is used to store the function pointer, |
1784 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1785 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1786 | * private use must be set using malloc'd pointers. | |
1787 | */ | |
16d20bd9 AD |
1788 | |
1789 | SV * | |
864dbfa3 | 1790 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1791 | { |
f4c556ac GS |
1792 | if (!funcp) |
1793 | return Nullsv; | |
1794 | ||
3280af22 NIS |
1795 | if (!PL_rsfp_filters) |
1796 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1797 | if (!datasv) |
8c52afec | 1798 | datasv = NEWSV(255,0); |
16d20bd9 | 1799 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1800 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1801 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1802 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1803 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1804 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1805 | av_unshift(PL_rsfp_filters, 1); |
1806 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1807 | return(datasv); |
1808 | } | |
1809 | ||
1810 | ||
1811 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1812 | void |
864dbfa3 | 1813 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1814 | { |
e0c19803 | 1815 | SV *datasv; |
f4c556ac | 1816 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1817 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1818 | return; |
1819 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1820 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1821 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1822 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1823 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1824 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1825 | |
16d20bd9 AD |
1826 | return; |
1827 | } | |
1828 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1829 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1830 | } |
1831 | ||
1832 | ||
1833 | /* Invoke the n'th filter function for the current rsfp. */ | |
1834 | I32 | |
864dbfa3 | 1835 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1836 | |
1837 | ||
1838 | /* 0 = read one text line */ | |
a0d0e21e | 1839 | { |
16d20bd9 AD |
1840 | filter_t funcp; |
1841 | SV *datasv = NULL; | |
e50aee73 | 1842 | |
3280af22 | 1843 | if (!PL_rsfp_filters) |
16d20bd9 | 1844 | return -1; |
3280af22 | 1845 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1846 | /* Provide a default input filter to make life easy. */ |
1847 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1848 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1849 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1850 | if (maxlen) { |
1851 | /* Want a block */ | |
1852 | int len ; | |
1853 | int old_len = SvCUR(buf_sv) ; | |
1854 | ||
1855 | /* ensure buf_sv is large enough */ | |
1856 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1857 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1858 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1859 | return -1; /* error */ |
1860 | else | |
1861 | return 0 ; /* end of file */ | |
1862 | } | |
16d20bd9 AD |
1863 | SvCUR_set(buf_sv, old_len + len) ; |
1864 | } else { | |
1865 | /* Want a line */ | |
3280af22 NIS |
1866 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1867 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1868 | return -1; /* error */ |
1869 | else | |
1870 | return 0 ; /* end of file */ | |
1871 | } | |
16d20bd9 AD |
1872 | } |
1873 | return SvCUR(buf_sv); | |
1874 | } | |
1875 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1876 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1877 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1878 | "filter_read %d: skipped (filter deleted)\n", | |
1879 | idx)); | |
16d20bd9 AD |
1880 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1881 | } | |
1882 | /* Get function pointer hidden within datasv */ | |
1883 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1884 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1885 | "filter_read %d: via function %p (%s)\n", | |
1886 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1887 | /* Call function. The function is expected to */ |
1888 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1889 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1890 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1891 | } |
1892 | ||
76e3520e | 1893 | STATIC char * |
cea2e8a9 | 1894 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1895 | { |
c39cd008 | 1896 | #ifdef PERL_CR_FILTER |
3280af22 | 1897 | if (!PL_rsfp_filters) { |
c39cd008 | 1898 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
1899 | } |
1900 | #endif | |
3280af22 | 1901 | if (PL_rsfp_filters) { |
16d20bd9 | 1902 | |
55497cff | 1903 | if (!append) |
1904 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1905 | if (FILTER_READ(0, sv, 0) > 0) |
1906 | return ( SvPVX(sv) ) ; | |
1907 | else | |
1908 | return Nullch ; | |
1909 | } | |
9d116dd7 | 1910 | else |
fd049845 | 1911 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1912 | } |
1913 | ||
1914 | ||
748a9306 LW |
1915 | #ifdef DEBUGGING |
1916 | static char* exp_name[] = | |
09bef843 SB |
1917 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1918 | "ATTRTERM", "TERMBLOCK" | |
1919 | }; | |
748a9306 | 1920 | #endif |
463ee0b2 | 1921 | |
02aa26ce NT |
1922 | /* |
1923 | yylex | |
1924 | ||
1925 | Works out what to call the token just pulled out of the input | |
1926 | stream. The yacc parser takes care of taking the ops we return and | |
1927 | stitching them into a tree. | |
1928 | ||
1929 | Returns: | |
1930 | PRIVATEREF | |
1931 | ||
1932 | Structure: | |
1933 | if read an identifier | |
1934 | if we're in a my declaration | |
1935 | croak if they tried to say my($foo::bar) | |
1936 | build the ops for a my() declaration | |
1937 | if it's an access to a my() variable | |
1938 | are we in a sort block? | |
1939 | croak if my($a); $a <=> $b | |
1940 | build ops for access to a my() variable | |
1941 | if in a dq string, and they've said @foo and we can't find @foo | |
1942 | croak | |
1943 | build ops for a bareword | |
1944 | if we already built the token before, use it. | |
1945 | */ | |
1946 | ||
864dbfa3 GS |
1947 | int |
1948 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 1949 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 1950 | #else |
cea2e8a9 | 1951 | Perl_yylex(pTHX) |
864dbfa3 | 1952 | #endif |
378cc40b | 1953 | { |
11343788 | 1954 | dTHR; |
79072805 | 1955 | register char *s; |
378cc40b | 1956 | register char *d; |
79072805 | 1957 | register I32 tmp; |
463ee0b2 | 1958 | STRLEN len; |
161b471a NIS |
1959 | GV *gv = Nullgv; |
1960 | GV **gvp = 0; | |
a687059c | 1961 | |
a1a0e61e TD |
1962 | #ifdef USE_PURE_BISON |
1963 | yylval_pointer = lvalp; | |
1964 | yychar_pointer = lcharp; | |
1965 | #endif | |
1966 | ||
02aa26ce | 1967 | /* check if there's an identifier for us to look at */ |
3280af22 | 1968 | if (PL_pending_ident) { |
02aa26ce | 1969 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1970 | char pit = PL_pending_ident; |
1971 | PL_pending_ident = 0; | |
bbce6d69 | 1972 | |
02aa26ce NT |
1973 | /* if we're in a my(), we can't allow dynamics here. |
1974 | $foo'bar has already been turned into $foo::bar, so | |
1975 | just check for colons. | |
1976 | ||
1977 | if it's a legal name, the OP is a PADANY. | |
1978 | */ | |
3280af22 | 1979 | if (PL_in_my) { |
77ca0c92 LW |
1980 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1981 | tmp = pad_allocmy(PL_tokenbuf); | |
1982 | } | |
1983 | else { | |
1984 | if (strchr(PL_tokenbuf,':')) | |
1985 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 1986 | |
77ca0c92 LW |
1987 | yylval.opval = newOP(OP_PADANY, 0); |
1988 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
1989 | return PRIVATEREF; | |
1990 | } | |
bbce6d69 | 1991 | } |
1992 | ||
02aa26ce NT |
1993 | /* |
1994 | build the ops for accesses to a my() variable. | |
1995 | ||
1996 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1997 | then used in a comparison. This catches most, but not | |
1998 | all cases. For instance, it catches | |
1999 | sort { my($a); $a <=> $b } | |
2000 | but not | |
2001 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
2002 | (although why you'd do that is anyone's guess). | |
2003 | */ | |
2004 | ||
3280af22 | 2005 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 2006 | #ifdef USE_THREADS |
54b9620d | 2007 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
2008 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
2009 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
2010 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 2011 | { |
2faa37cc | 2012 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
2013 | yylval.opval->op_targ = tmp; |
2014 | return PRIVATEREF; | |
2015 | } | |
2016 | #endif /* USE_THREADS */ | |
3280af22 | 2017 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
77ca0c92 LW |
2018 | /* might be an "our" variable" */ |
2019 | if (SvFLAGS(AvARRAY(PL_comppad_name)[tmp]) & SVpad_OUR) { | |
2020 | /* build ops for a bareword */ | |
2021 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
2022 | yylval.opval->op_private = OPpCONST_ENTERED; | |
2023 | gv_fetchpv(PL_tokenbuf+1, | |
2024 | (PL_in_eval | |
2025 | ? (GV_ADDMULTI | GV_ADDINEVAL | GV_ADDOUR) | |
2026 | : GV_ADDOUR | |
2027 | ), | |
2028 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2029 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2030 | : SVt_PVHV)); | |
2031 | return WORD; | |
2032 | } | |
2033 | ||
02aa26ce | 2034 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2035 | if (PL_last_lop_op == OP_SORT && |
2036 | PL_tokenbuf[0] == '$' && | |
2037 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2038 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2039 | { |
3280af22 NIS |
2040 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2041 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2042 | d++) |
2043 | { | |
2044 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2045 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2046 | PL_tokenbuf); |
a863c7d1 | 2047 | } |
bbce6d69 | 2048 | } |
2049 | } | |
bbce6d69 | 2050 | |
a863c7d1 MB |
2051 | yylval.opval = newOP(OP_PADANY, 0); |
2052 | yylval.opval->op_targ = tmp; | |
2053 | return PRIVATEREF; | |
2054 | } | |
bbce6d69 | 2055 | } |
2056 | ||
02aa26ce NT |
2057 | /* |
2058 | Whine if they've said @foo in a doublequoted string, | |
2059 | and @foo isn't a variable we can find in the symbol | |
2060 | table. | |
2061 | */ | |
3280af22 NIS |
2062 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2063 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2064 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2065 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2066 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2067 | } |
2068 | ||
02aa26ce | 2069 | /* build ops for a bareword */ |
3280af22 | 2070 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2071 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2072 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2073 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2074 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2075 | : SVt_PVHV)); |
2076 | return WORD; | |
2077 | } | |
2078 | ||
02aa26ce NT |
2079 | /* no identifier pending identification */ |
2080 | ||
3280af22 | 2081 | switch (PL_lex_state) { |
79072805 LW |
2082 | #ifdef COMMENTARY |
2083 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2084 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2085 | break; | |
2086 | #endif | |
2087 | ||
09bef843 | 2088 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2089 | case LEX_KNOWNEXT: |
3280af22 NIS |
2090 | PL_nexttoke--; |
2091 | yylval = PL_nextval[PL_nexttoke]; | |
2092 | if (!PL_nexttoke) { | |
2093 | PL_lex_state = PL_lex_defer; | |
2094 | PL_expect = PL_lex_expect; | |
2095 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2096 | } |
3280af22 | 2097 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2098 | |
02aa26ce | 2099 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2100 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2101 | */ |
79072805 LW |
2102 | case LEX_INTERPCASEMOD: |
2103 | #ifdef DEBUGGING | |
3280af22 | 2104 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2105 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2106 | #endif |
02aa26ce | 2107 | /* handle \E or end of string */ |
3280af22 | 2108 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2109 | char oldmod; |
02aa26ce NT |
2110 | |
2111 | /* if at a \E */ | |
3280af22 NIS |
2112 | if (PL_lex_casemods) { |
2113 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2114 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2115 | |
3280af22 NIS |
2116 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2117 | PL_bufptr += 2; | |
2118 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2119 | } |
79072805 LW |
2120 | return ')'; |
2121 | } | |
3280af22 NIS |
2122 | if (PL_bufptr != PL_bufend) |
2123 | PL_bufptr += 2; | |
2124 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2125 | return yylex(); |
79072805 LW |
2126 | } |
2127 | else { | |
3280af22 | 2128 | s = PL_bufptr + 1; |
79072805 LW |
2129 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2130 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2131 | if (strchr("LU", *s) && |
3280af22 | 2132 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2133 | { |
3280af22 | 2134 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2135 | return ')'; |
2136 | } | |
3280af22 NIS |
2137 | if (PL_lex_casemods > 10) { |
2138 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2139 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2140 | SAVEFREEPV(newlb); |
3280af22 | 2141 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2142 | } |
2143 | } | |
3280af22 NIS |
2144 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2145 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2146 | PL_lex_state = LEX_INTERPCONCAT; | |
2147 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2148 | force_next('('); |
2149 | if (*s == 'l') | |
3280af22 | 2150 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2151 | else if (*s == 'u') |
3280af22 | 2152 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2153 | else if (*s == 'L') |
3280af22 | 2154 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2155 | else if (*s == 'U') |
3280af22 | 2156 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2157 | else if (*s == 'Q') |
3280af22 | 2158 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2159 | else |
cea2e8a9 | 2160 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2161 | PL_bufptr = s + 1; |
79072805 | 2162 | force_next(FUNC); |
3280af22 NIS |
2163 | if (PL_lex_starts) { |
2164 | s = PL_bufptr; | |
2165 | PL_lex_starts = 0; | |
79072805 LW |
2166 | Aop(OP_CONCAT); |
2167 | } | |
2168 | else | |
cea2e8a9 | 2169 | return yylex(); |
79072805 LW |
2170 | } |
2171 | ||
55497cff | 2172 | case LEX_INTERPPUSH: |
2173 | return sublex_push(); | |
2174 | ||
79072805 | 2175 | case LEX_INTERPSTART: |
3280af22 | 2176 | if (PL_bufptr == PL_bufend) |
79072805 | 2177 | return sublex_done(); |
3280af22 NIS |
2178 | PL_expect = XTERM; |
2179 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2180 | PL_lex_state = LEX_INTERPNORMAL; | |
2181 | if (PL_lex_dojoin) { | |
2182 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2183 | force_next(','); |
554b3eca | 2184 | #ifdef USE_THREADS |
533c011a NIS |
2185 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2186 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2187 | force_next(PRIVATEREF); |
2188 | #else | |
a0d0e21e | 2189 | force_ident("\"", '$'); |
554b3eca | 2190 | #endif /* USE_THREADS */ |
3280af22 | 2191 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2192 | force_next('$'); |
3280af22 | 2193 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2194 | force_next('('); |
3280af22 | 2195 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2196 | force_next(FUNC); |
2197 | } | |
3280af22 NIS |
2198 | if (PL_lex_starts++) { |
2199 | s = PL_bufptr; | |
79072805 LW |
2200 | Aop(OP_CONCAT); |
2201 | } | |
cea2e8a9 | 2202 | return yylex(); |
79072805 LW |
2203 | |
2204 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2205 | if (intuit_more(PL_bufptr)) { |
2206 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2207 | break; |
2208 | } | |
2209 | /* FALL THROUGH */ | |
2210 | ||
2211 | case LEX_INTERPEND: | |
3280af22 NIS |
2212 | if (PL_lex_dojoin) { |
2213 | PL_lex_dojoin = FALSE; | |
2214 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2215 | return ')'; |
2216 | } | |
43a16006 | 2217 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2218 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2219 | { |
e9fa98b2 | 2220 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2221 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2222 | PL_lex_repl = Nullsv; |
2223 | } | |
79072805 LW |
2224 | /* FALLTHROUGH */ |
2225 | case LEX_INTERPCONCAT: | |
2226 | #ifdef DEBUGGING | |
3280af22 | 2227 | if (PL_lex_brackets) |
cea2e8a9 | 2228 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2229 | #endif |
3280af22 | 2230 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2231 | return sublex_done(); |
2232 | ||
3280af22 NIS |
2233 | if (SvIVX(PL_linestr) == '\'') { |
2234 | SV *sv = newSVsv(PL_linestr); | |
2235 | if (!PL_lex_inpat) | |
76e3520e | 2236 | sv = tokeq(sv); |
3280af22 | 2237 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2238 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2239 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2240 | s = PL_bufend; |
79072805 LW |
2241 | } |
2242 | else { | |
3280af22 | 2243 | s = scan_const(PL_bufptr); |
79072805 | 2244 | if (*s == '\\') |
3280af22 | 2245 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2246 | else |
3280af22 | 2247 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2248 | } |
2249 | ||
3280af22 NIS |
2250 | if (s != PL_bufptr) { |
2251 | PL_nextval[PL_nexttoke] = yylval; | |
2252 | PL_expect = XTERM; | |
79072805 | 2253 | force_next(THING); |
3280af22 | 2254 | if (PL_lex_starts++) |
79072805 LW |
2255 | Aop(OP_CONCAT); |
2256 | else { | |
3280af22 | 2257 | PL_bufptr = s; |
cea2e8a9 | 2258 | return yylex(); |
79072805 LW |
2259 | } |
2260 | } | |
2261 | ||
cea2e8a9 | 2262 | return yylex(); |
a0d0e21e | 2263 | case LEX_FORMLINE: |
3280af22 NIS |
2264 | PL_lex_state = LEX_NORMAL; |
2265 | s = scan_formline(PL_bufptr); | |
2266 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2267 | goto rightbracket; |
2268 | OPERATOR(';'); | |
79072805 LW |
2269 | } |
2270 | ||
3280af22 NIS |
2271 | s = PL_bufptr; |
2272 | PL_oldoldbufptr = PL_oldbufptr; | |
2273 | PL_oldbufptr = s; | |
79072805 | 2274 | DEBUG_p( { |
bf49b057 GS |
2275 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2276 | exp_name[PL_expect], s); | |
79072805 | 2277 | } ) |
463ee0b2 LW |
2278 | |
2279 | retry: | |
378cc40b LW |
2280 | switch (*s) { |
2281 | default: | |
834a4ddd LW |
2282 | if (isIDFIRST_lazy(s)) |
2283 | goto keylookup; | |
cea2e8a9 | 2284 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2285 | case 4: |
2286 | case 26: | |
2287 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2288 | case 0: |
3280af22 NIS |
2289 | if (!PL_rsfp) { |
2290 | PL_last_uni = 0; | |
2291 | PL_last_lop = 0; | |
2292 | if (PL_lex_brackets) | |
d98d5fff | 2293 | yyerror("Missing right curly or square bracket"); |
79072805 | 2294 | TOKEN(0); |
463ee0b2 | 2295 | } |
3280af22 | 2296 | if (s++ < PL_bufend) |
a687059c | 2297 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2298 | PL_last_uni = 0; |
2299 | PL_last_lop = 0; | |
2300 | if (!PL_in_eval && !PL_preambled) { | |
2301 | PL_preambled = TRUE; | |
2302 | sv_setpv(PL_linestr,incl_perldb()); | |
2303 | if (SvCUR(PL_linestr)) | |
2304 | sv_catpv(PL_linestr,";"); | |
2305 | if (PL_preambleav){ | |
2306 | while(AvFILLp(PL_preambleav) >= 0) { | |
2307 | SV *tmpsv = av_shift(PL_preambleav); | |
2308 | sv_catsv(PL_linestr, tmpsv); | |
2309 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2310 | sv_free(tmpsv); |
2311 | } | |
3280af22 NIS |
2312 | sv_free((SV*)PL_preambleav); |
2313 | PL_preambleav = NULL; | |
91b7def8 | 2314 | } |
3280af22 NIS |
2315 | if (PL_minus_n || PL_minus_p) { |
2316 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2317 | if (PL_minus_l) | |
2318 | sv_catpv(PL_linestr,"chomp;"); | |
2319 | if (PL_minus_a) { | |
8fd239a7 CS |
2320 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2321 | if (gv) | |
2322 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2323 | if (PL_minus_F) { |
2324 | if (strchr("/'\"", *PL_splitstr) | |
2325 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2326 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2327 | else { |
2328 | char delim; | |
2329 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2330 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2331 | delim = *s; |
cea2e8a9 | 2332 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2333 | "q" + (delim == '\''), delim); |
3280af22 | 2334 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2335 | if (*s == '\\') |
3280af22 NIS |
2336 | sv_catpvn(PL_linestr, "\\", 1); |
2337 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2338 | } |
cea2e8a9 | 2339 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2340 | } |
2304df62 AD |
2341 | } |
2342 | else | |
3280af22 | 2343 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2344 | } |
79072805 | 2345 | } |
3280af22 NIS |
2346 | sv_catpv(PL_linestr, "\n"); |
2347 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2348 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2349 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2350 | SV *sv = NEWSV(85,0); |
2351 | ||
2352 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2353 | sv_setsv(sv,PL_linestr); |
57843af0 | 2354 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2355 | } |
79072805 | 2356 | goto retry; |
a687059c | 2357 | } |
e929a76b | 2358 | do { |
3280af22 | 2359 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2360 | fake_eof: |
3280af22 NIS |
2361 | if (PL_rsfp) { |
2362 | if (PL_preprocess && !PL_in_eval) | |
2363 | (void)PerlProc_pclose(PL_rsfp); | |
2364 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2365 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2366 | else |
3280af22 NIS |
2367 | (void)PerlIO_close(PL_rsfp); |
2368 | PL_rsfp = Nullfp; | |
4a9ae47a | 2369 | PL_doextract = FALSE; |
395c3793 | 2370 | } |
3280af22 NIS |
2371 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2372 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2373 | sv_catpv(PL_linestr,";}"); | |
2374 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2375 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2376 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2377 | goto retry; |
2378 | } | |
3280af22 NIS |
2379 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2380 | sv_setpv(PL_linestr,""); | |
79072805 | 2381 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2382 | } |
3280af22 | 2383 | if (PL_doextract) { |
a0d0e21e | 2384 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2385 | PL_doextract = FALSE; |
a0d0e21e LW |
2386 | |
2387 | /* Incest with pod. */ | |
2388 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2389 | sv_setpv(PL_linestr, ""); |
2390 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2391 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2392 | PL_doextract = FALSE; | |
a0d0e21e LW |
2393 | } |
2394 | } | |
463ee0b2 | 2395 | incline(s); |
3280af22 NIS |
2396 | } while (PL_doextract); |
2397 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2398 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2399 | SV *sv = NEWSV(85,0); |
a687059c | 2400 | |
93a17b20 | 2401 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2402 | sv_setsv(sv,PL_linestr); |
57843af0 | 2403 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2404 | } |
3280af22 | 2405 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2406 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2407 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2408 | s++; |
a0d0e21e | 2409 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2410 | s++; |
44a8e56a | 2411 | d = Nullch; |
3280af22 | 2412 | if (!PL_in_eval) { |
44a8e56a | 2413 | if (*s == '#' && *(s+1) == '!') |
2414 | d = s + 2; | |
2415 | #ifdef ALTERNATE_SHEBANG | |
2416 | else { | |
2417 | static char as[] = ALTERNATE_SHEBANG; | |
2418 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2419 | d = s + (sizeof(as) - 1); | |
2420 | } | |
2421 | #endif /* ALTERNATE_SHEBANG */ | |
2422 | } | |
2423 | if (d) { | |
b8378b72 | 2424 | char *ipath; |
774d564b | 2425 | char *ipathend; |
b8378b72 | 2426 | |
774d564b | 2427 | while (isSPACE(*d)) |
b8378b72 CS |
2428 | d++; |
2429 | ipath = d; | |
774d564b | 2430 | while (*d && !isSPACE(*d)) |
2431 | d++; | |
2432 | ipathend = d; | |
2433 | ||
2434 | #ifdef ARG_ZERO_IS_SCRIPT | |
2435 | if (ipathend > ipath) { | |
2436 | /* | |
2437 | * HP-UX (at least) sets argv[0] to the script name, | |
2438 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2439 | * at least, set argv[0] to the basename of the Perl | |
2440 | * interpreter. So, having found "#!", we'll set it right. | |
2441 | */ | |
2442 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2443 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2444 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2445 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2446 | SvSETMAGIC(x); |
2447 | } | |
774d564b | 2448 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2449 | } |
774d564b | 2450 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2451 | |
2452 | /* | |
2453 | * Look for options. | |
2454 | */ | |
748a9306 | 2455 | d = instr(s,"perl -"); |
84e30d1a | 2456 | if (!d) { |
748a9306 | 2457 | d = instr(s,"perl"); |
84e30d1a GS |
2458 | #if defined(DOSISH) |
2459 | /* avoid getting into infinite loops when shebang | |
2460 | * line contains "Perl" rather than "perl" */ | |
2461 | if (!d) { | |
2462 | for (d = ipathend-4; d >= ipath; --d) { | |
2463 | if ((*d == 'p' || *d == 'P') | |
2464 | && !ibcmp(d, "perl", 4)) | |
2465 | { | |
2466 | break; | |
2467 | } | |
2468 | } | |
2469 | if (d < ipath) | |
2470 | d = Nullch; | |
2471 | } | |
2472 | #endif | |
2473 | } | |
44a8e56a | 2474 | #ifdef ALTERNATE_SHEBANG |
2475 | /* | |
2476 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2477 | * character that can be part of a Perl expression, then if | |
2478 | * we see it but not "perl", we're probably looking at the | |
2479 | * start of Perl code, not a request to hand off to some | |
2480 | * other interpreter. Similarly, if "perl" is there, but | |
2481 | * not in the first 'word' of the line, we assume the line | |
2482 | * contains the start of the Perl program. | |
44a8e56a | 2483 | */ |
2484 | if (d && *s != '#') { | |
774d564b | 2485 | char *c = ipath; |
44a8e56a | 2486 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2487 | c++; | |
2488 | if (c < d) | |
2489 | d = Nullch; /* "perl" not in first word; ignore */ | |
2490 | else | |
2491 | *s = '#'; /* Don't try to parse shebang line */ | |
2492 | } | |
774d564b | 2493 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2494 | if (!d && |
44a8e56a | 2495 | *s == '#' && |
774d564b | 2496 | ipathend > ipath && |
3280af22 | 2497 | !PL_minus_c && |
748a9306 | 2498 | !instr(s,"indir") && |
3280af22 | 2499 | instr(PL_origargv[0],"perl")) |
748a9306 | 2500 | { |
9f68db38 | 2501 | char **newargv; |
9f68db38 | 2502 | |
774d564b | 2503 | *ipathend = '\0'; |
2504 | s = ipathend + 1; | |
3280af22 | 2505 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2506 | s++; |
3280af22 NIS |
2507 | if (s < PL_bufend) { |
2508 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2509 | newargv[1] = s; |
3280af22 | 2510 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2511 | s++; |
2512 | *s = '\0'; | |
3280af22 | 2513 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2514 | } |
2515 | else | |
3280af22 | 2516 | newargv = PL_origargv; |
774d564b | 2517 | newargv[0] = ipath; |
80252599 | 2518 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2519 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2520 | } |
748a9306 | 2521 | if (d) { |
3280af22 NIS |
2522 | U32 oldpdb = PL_perldb; |
2523 | bool oldn = PL_minus_n; | |
2524 | bool oldp = PL_minus_p; | |
748a9306 LW |
2525 | |
2526 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2527 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2528 | |
2529 | if (*d++ == '-') { | |
8cc95fdb | 2530 | do { |
2531 | if (*d == 'M' || *d == 'm') { | |
2532 | char *m = d; | |
2533 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2534 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2535 | (int)(d - m), m); |
2536 | } | |
2537 | d = moreswitches(d); | |
2538 | } while (d); | |
84902520 | 2539 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2540 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2541 | /* if we have already added "LINE: while (<>) {", |
2542 | we must not do it again */ | |
748a9306 | 2543 | { |
3280af22 NIS |
2544 | sv_setpv(PL_linestr, ""); |
2545 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2546 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2547 | PL_preambled = FALSE; | |
84902520 | 2548 | if (PERLDB_LINE) |
3280af22 | 2549 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2550 | goto retry; |
2551 | } | |
a0d0e21e | 2552 | } |
79072805 | 2553 | } |
9f68db38 | 2554 | } |
79072805 | 2555 | } |
3280af22 NIS |
2556 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2557 | PL_bufptr = s; | |
2558 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2559 | return yylex(); |
ae986130 | 2560 | } |
378cc40b | 2561 | goto retry; |
4fdae800 | 2562 | case '\r': |
6a27c188 | 2563 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2564 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2565 | Perl_croak(aTHX_ | |
54310121 | 2566 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2567 | #endif |
4fdae800 | 2568 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2569 | s++; |
2570 | goto retry; | |
378cc40b | 2571 | case '#': |
e929a76b | 2572 | case '\n': |
3280af22 NIS |
2573 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2574 | d = PL_bufend; | |
a687059c | 2575 | while (s < d && *s != '\n') |
378cc40b | 2576 | s++; |
0f85fab0 | 2577 | if (s < d) |
378cc40b | 2578 | s++; |
463ee0b2 | 2579 | incline(s); |
3280af22 NIS |
2580 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2581 | PL_bufptr = s; | |
2582 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2583 | return yylex(); |
a687059c | 2584 | } |
378cc40b | 2585 | } |
a687059c | 2586 | else { |
378cc40b | 2587 | *s = '\0'; |
3280af22 | 2588 | PL_bufend = s; |
a687059c | 2589 | } |
378cc40b LW |
2590 | goto retry; |
2591 | case '-': | |
79072805 | 2592 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2593 | s++; |
3280af22 | 2594 | PL_bufptr = s; |
748a9306 LW |
2595 | tmp = *s++; |
2596 | ||
3280af22 | 2597 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2598 | s++; |
2599 | ||
2600 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2601 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2602 | OPERATOR('-'); /* unary minus */ |
2603 | } | |
3280af22 NIS |
2604 | PL_last_uni = PL_oldbufptr; |
2605 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2606 | switch (tmp) { |
79072805 LW |
2607 | case 'r': FTST(OP_FTEREAD); |
2608 | case 'w': FTST(OP_FTEWRITE); | |
2609 | case 'x': FTST(OP_FTEEXEC); | |
2610 | case 'o': FTST(OP_FTEOWNED); | |
2611 | case 'R': FTST(OP_FTRREAD); | |
2612 | case 'W': FTST(OP_FTRWRITE); | |
2613 | case 'X': FTST(OP_FTREXEC); | |
2614 | case 'O': FTST(OP_FTROWNED); | |
2615 | case 'e': FTST(OP_FTIS); | |
2616 | case 'z': FTST(OP_FTZERO); | |
2617 | case 's': FTST(OP_FTSIZE); | |
2618 | case 'f': FTST(OP_FTFILE); | |
2619 | case 'd': FTST(OP_FTDIR); | |
2620 | case 'l': FTST(OP_FTLINK); | |
2621 | case 'p': FTST(OP_FTPIPE); | |
2622 | case 'S': FTST(OP_FTSOCK); | |
2623 | case 'u': FTST(OP_FTSUID); | |
2624 | case 'g': FTST(OP_FTSGID); | |
2625 | case 'k': FTST(OP_FTSVTX); | |
2626 | case 'b': FTST(OP_FTBLK); | |
2627 | case 'c': FTST(OP_FTCHR); | |
2628 | case 't': FTST(OP_FTTTY); | |
2629 | case 'T': FTST(OP_FTTEXT); | |
2630 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2631 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2632 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2633 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2634 | default: |
cea2e8a9 | 2635 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2636 | break; |
2637 | } | |
2638 | } | |
a687059c LW |
2639 | tmp = *s++; |
2640 | if (*s == tmp) { | |
2641 | s++; | |
3280af22 | 2642 | if (PL_expect == XOPERATOR) |
79072805 LW |
2643 | TERM(POSTDEC); |
2644 | else | |
2645 | OPERATOR(PREDEC); | |
2646 | } | |
2647 | else if (*s == '>') { | |
2648 | s++; | |
2649 | s = skipspace(s); | |
834a4ddd | 2650 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2651 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2652 | TOKEN(ARROW); |
79072805 | 2653 | } |
748a9306 LW |
2654 | else if (*s == '$') |
2655 | OPERATOR(ARROW); | |
463ee0b2 | 2656 | else |
748a9306 | 2657 | TERM(ARROW); |
a687059c | 2658 | } |
3280af22 | 2659 | if (PL_expect == XOPERATOR) |
79072805 LW |
2660 | Aop(OP_SUBTRACT); |
2661 | else { | |
3280af22 | 2662 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2663 | check_uni(); |
79072805 | 2664 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2665 | } |
79072805 | 2666 | |
378cc40b | 2667 | case '+': |
a687059c LW |
2668 | tmp = *s++; |
2669 | if (*s == tmp) { | |
378cc40b | 2670 | s++; |
3280af22 | 2671 | if (PL_expect == XOPERATOR) |
79072805 LW |
2672 | TERM(POSTINC); |
2673 | else | |
2674 | OPERATOR(PREINC); | |
378cc40b | 2675 | } |
3280af22 | 2676 | if (PL_expect == XOPERATOR) |
79072805 LW |
2677 | Aop(OP_ADD); |
2678 | else { | |
3280af22 | 2679 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2680 | check_uni(); |
a687059c | 2681 | OPERATOR('+'); |
2f3197b3 | 2682 | } |
a687059c | 2683 | |
378cc40b | 2684 | case '*': |
3280af22 NIS |
2685 | if (PL_expect != XOPERATOR) { |
2686 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2687 | PL_expect = XOPERATOR; | |
2688 | force_ident(PL_tokenbuf, '*'); | |
2689 | if (!*PL_tokenbuf) | |
a0d0e21e | 2690 | PREREF('*'); |
79072805 | 2691 | TERM('*'); |
a687059c | 2692 | } |
79072805 LW |
2693 | s++; |
2694 | if (*s == '*') { | |
a687059c | 2695 | s++; |
79072805 | 2696 | PWop(OP_POW); |
a687059c | 2697 | } |
79072805 LW |
2698 | Mop(OP_MULTIPLY); |
2699 | ||
378cc40b | 2700 | case '%': |
3280af22 | 2701 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2702 | ++s; |
2703 | Mop(OP_MODULO); | |
a687059c | 2704 | } |
3280af22 NIS |
2705 | PL_tokenbuf[0] = '%'; |
2706 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2707 | if (!PL_tokenbuf[1]) { | |
2708 | if (s == PL_bufend) | |
bbce6d69 | 2709 | yyerror("Final % should be \\% or %name"); |
2710 | PREREF('%'); | |
a687059c | 2711 | } |
3280af22 | 2712 | PL_pending_ident = '%'; |
bbce6d69 | 2713 | TERM('%'); |
a687059c | 2714 | |
378cc40b | 2715 | case '^': |
79072805 | 2716 | s++; |
a0d0e21e | 2717 | BOop(OP_BIT_XOR); |
79072805 | 2718 | case '[': |
3280af22 | 2719 | PL_lex_brackets++; |
79072805 | 2720 | /* FALL THROUGH */ |
378cc40b | 2721 | case '~': |
378cc40b | 2722 | case ',': |
378cc40b LW |
2723 | tmp = *s++; |
2724 | OPERATOR(tmp); | |
a0d0e21e LW |
2725 | case ':': |
2726 | if (s[1] == ':') { | |
2727 | len = 0; | |
2728 | goto just_a_word; | |
2729 | } | |
2730 | s++; | |
09bef843 SB |
2731 | switch (PL_expect) { |
2732 | OP *attrs; | |
2733 | case XOPERATOR: | |
2734 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2735 | break; | |
2736 | PL_bufptr = s; /* update in case we back off */ | |
2737 | goto grabattrs; | |
2738 | case XATTRBLOCK: | |
2739 | PL_expect = XBLOCK; | |
2740 | goto grabattrs; | |
2741 | case XATTRTERM: | |
2742 | PL_expect = XTERMBLOCK; | |
2743 | grabattrs: | |
2744 | s = skipspace(s); | |
2745 | attrs = Nullop; | |
2746 | while (isIDFIRST_lazy(s)) { | |
2747 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
2748 | if (*d == '(') { | |
2749 | d = scan_str(d,TRUE,TRUE); | |
2750 | if (!d) { | |
2751 | if (PL_lex_stuff) { | |
2752 | SvREFCNT_dec(PL_lex_stuff); | |
2753 | PL_lex_stuff = Nullsv; | |
2754 | } | |
2755 | /* MUST advance bufptr here to avoid bogus | |
2756 | "at end of line" context messages from yyerror(). | |
2757 | */ | |
2758 | PL_bufptr = s + len; | |
2759 | yyerror("Unterminated attribute parameter in attribute list"); | |
2760 | if (attrs) | |
2761 | op_free(attrs); | |
2762 | return 0; /* EOF indicator */ | |
2763 | } | |
2764 | } | |
2765 | if (PL_lex_stuff) { | |
2766 | SV *sv = newSVpvn(s, len); | |
2767 | sv_catsv(sv, PL_lex_stuff); | |
2768 | attrs = append_elem(OP_LIST, attrs, | |
2769 | newSVOP(OP_CONST, 0, sv)); | |
2770 | SvREFCNT_dec(PL_lex_stuff); | |
2771 | PL_lex_stuff = Nullsv; | |
2772 | } | |
2773 | else { | |
2774 | attrs = append_elem(OP_LIST, attrs, | |
2775 | newSVOP(OP_CONST, 0, | |
2776 | newSVpvn(s, len))); | |
2777 | } | |
2778 | s = skipspace(d); | |
2779 | while (*s == ',') | |
2780 | s = skipspace(s+1); | |
2781 | } | |
2782 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}' for vi */ | |
2783 | if (*s != ';' && *s != tmp) { | |
2784 | char q = ((*s == '\'') ? '"' : '\''); | |
2785 | /* If here for an expression, and parsed no attrs, back off. */ | |
2786 | if (tmp == '=' && !attrs) { | |
2787 | s = PL_bufptr; | |
2788 | break; | |
2789 | } | |
2790 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2791 | context messages from yyerror(). | |
2792 | */ | |
2793 | PL_bufptr = s; | |
2794 | if (!*s) | |
2795 | yyerror("Unterminated attribute list"); | |
2796 | else | |
2797 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2798 | q, *s, q)); | |
2799 | if (attrs) | |
2800 | op_free(attrs); | |
2801 | OPERATOR(':'); | |
2802 | } | |
2803 | if (attrs) { | |
2804 | PL_nextval[PL_nexttoke].opval = attrs; | |
2805 | force_next(THING); | |
2806 | } | |
2807 | TOKEN(COLONATTR); | |
2808 | } | |
a0d0e21e | 2809 | OPERATOR(':'); |
8990e307 LW |
2810 | case '(': |
2811 | s++; | |
3280af22 NIS |
2812 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2813 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2814 | else |
3280af22 | 2815 | PL_expect = XTERM; |
a0d0e21e | 2816 | TOKEN('('); |
378cc40b | 2817 | case ';': |
57843af0 GS |
2818 | if (CopLINE(PL_curcop) < PL_copline) |
2819 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2820 | tmp = *s++; |
2821 | OPERATOR(tmp); | |
2822 | case ')': | |
378cc40b | 2823 | tmp = *s++; |
16d20bd9 AD |
2824 | s = skipspace(s); |
2825 | if (*s == '{') | |
2826 | PREBLOCK(tmp); | |
378cc40b | 2827 | TERM(tmp); |
79072805 LW |
2828 | case ']': |
2829 | s++; | |
3280af22 | 2830 | if (PL_lex_brackets <= 0) |
d98d5fff | 2831 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2832 | else |
3280af22 NIS |
2833 | --PL_lex_brackets; |
2834 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2835 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2836 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2837 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2838 | } |
2839 | } | |
4633a7c4 | 2840 | TERM(']'); |
79072805 LW |
2841 | case '{': |
2842 | leftbracket: | |
79072805 | 2843 | s++; |
3280af22 NIS |
2844 | if (PL_lex_brackets > 100) { |
2845 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2846 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2847 | SAVEFREEPV(newlb); |
3280af22 | 2848 | PL_lex_brackstack = newlb; |
8990e307 LW |
2849 | } |
2850 | } | |
3280af22 | 2851 | switch (PL_expect) { |
a0d0e21e | 2852 | case XTERM: |
3280af22 | 2853 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2854 | s--; |
2855 | PRETERMBLOCK(DO); | |
2856 | } | |
3280af22 NIS |
2857 | if (PL_oldoldbufptr == PL_last_lop) |
2858 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2859 | else |
3280af22 | 2860 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2861 | OPERATOR(HASHBRACK); |
a0d0e21e | 2862 | case XOPERATOR: |
3280af22 | 2863 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2864 | s++; |
44a8e56a | 2865 | d = s; |
3280af22 NIS |
2866 | PL_tokenbuf[0] = '\0'; |
2867 | if (d < PL_bufend && *d == '-') { | |
2868 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2869 | d++; |
3280af22 | 2870 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2871 | d++; |
2872 | } | |
834a4ddd | 2873 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2874 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2875 | FALSE, &len); |
3280af22 | 2876 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2877 | d++; |
2878 | if (*d == '}') { | |
3280af22 | 2879 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2880 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2881 | if (minus) | |
2882 | force_next('-'); | |
748a9306 LW |
2883 | } |
2884 | } | |
2885 | /* FALL THROUGH */ | |
09bef843 | 2886 | case XATTRBLOCK: |
748a9306 | 2887 | case XBLOCK: |
3280af22 NIS |
2888 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2889 | PL_expect = XSTATE; | |
a0d0e21e | 2890 | break; |
09bef843 | 2891 | case XATTRTERM: |
a0d0e21e | 2892 | case XTERMBLOCK: |
3280af22 NIS |
2893 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2894 | PL_expect = XSTATE; | |
a0d0e21e LW |
2895 | break; |
2896 | default: { | |
2897 | char *t; | |
3280af22 NIS |
2898 | if (PL_oldoldbufptr == PL_last_lop) |
2899 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2900 | else |
3280af22 | 2901 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2902 | s = skipspace(s); |
09ecc4b6 | 2903 | if (*s == '}') |
a0d0e21e | 2904 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2905 | /* This hack serves to disambiguate a pair of curlies |
2906 | * as being a block or an anon hash. Normally, expectation | |
2907 | * determines that, but in cases where we're not in a | |
2908 | * position to expect anything in particular (like inside | |
2909 | * eval"") we have to resolve the ambiguity. This code | |
2910 | * covers the case where the first term in the curlies is a | |
2911 | * quoted string. Most other cases need to be explicitly | |
2912 | * disambiguated by prepending a `+' before the opening | |
2913 | * curly in order to force resolution as an anon hash. | |
2914 | * | |
2915 | * XXX should probably propagate the outer expectation | |
2916 | * into eval"" to rely less on this hack, but that could | |
2917 | * potentially break current behavior of eval"". | |
2918 | * GSAR 97-07-21 | |
2919 | */ | |
2920 | t = s; | |
2921 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2922 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2923 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2924 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2925 | t++; | |
2926 | t++; | |
a0d0e21e | 2927 | } |
b8a4b1be | 2928 | else if (*s == 'q') { |
3280af22 | 2929 | if (++t < PL_bufend |
b8a4b1be | 2930 | && (!isALNUM(*t) |
3280af22 | 2931 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
2932 | && !isALNUM(*t)))) |
2933 | { | |
b8a4b1be GS |
2934 | char *tmps; |
2935 | char open, close, term; | |
2936 | I32 brackets = 1; | |
2937 | ||
3280af22 | 2938 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2939 | t++; |
2940 | term = *t; | |
2941 | open = term; | |
2942 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2943 | term = tmps[5]; | |
2944 | close = term; | |
2945 | if (open == close) | |
3280af22 NIS |
2946 | for (t++; t < PL_bufend; t++) { |
2947 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2948 | t++; |
6d07e5e9 | 2949 | else if (*t == open) |
b8a4b1be GS |
2950 | break; |
2951 | } | |
2952 | else | |
3280af22 NIS |
2953 | for (t++; t < PL_bufend; t++) { |
2954 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2955 | t++; |
6d07e5e9 | 2956 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2957 | break; |
2958 | else if (*t == open) | |
2959 | brackets++; | |
2960 | } | |
2961 | } | |
2962 | t++; | |
a0d0e21e | 2963 | } |
0505442f GS |
2964 | else if (isALNUM_lazy(t)) { |
2965 | t += UTF8SKIP(t); | |
2966 | while (t < PL_bufend && isALNUM_lazy(t)) | |
2967 | t += UTF8SKIP(t); | |
a0d0e21e | 2968 | } |
3280af22 | 2969 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2970 | t++; |
b8a4b1be GS |
2971 | /* if comma follows first term, call it an anon hash */ |
2972 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2973 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2974 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2975 | OPERATOR(HASHBRACK); |
3280af22 | 2976 | if (PL_expect == XREF) |
4e4e412b | 2977 | PL_expect = XTERM; |
a0d0e21e | 2978 | else { |
3280af22 NIS |
2979 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2980 | PL_expect = XSTATE; | |
a0d0e21e | 2981 | } |
8990e307 | 2982 | } |
a0d0e21e | 2983 | break; |
463ee0b2 | 2984 | } |
57843af0 | 2985 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 2986 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2987 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2988 | TOKEN('{'); |
378cc40b | 2989 | case '}': |
79072805 LW |
2990 | rightbracket: |
2991 | s++; | |
3280af22 | 2992 | if (PL_lex_brackets <= 0) |
d98d5fff | 2993 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 2994 | else |
3280af22 NIS |
2995 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2996 | if (PL_lex_brackets < PL_lex_formbrack) | |
2997 | PL_lex_formbrack = 0; | |
2998 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2999 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3000 | if (PL_expect & XFAKEBRACK) { |
3001 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3002 | PL_lex_state = LEX_INTERPEND; |
3003 | PL_bufptr = s; | |
cea2e8a9 | 3004 | return yylex(); /* ignore fake brackets */ |
79072805 | 3005 | } |
fa83b5b6 | 3006 | if (*s == '-' && s[1] == '>') |
3280af22 | 3007 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3008 | else if (*s != '[' && *s != '{') |
3280af22 | 3009 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3010 | } |
3011 | } | |
9059aa12 LW |
3012 | if (PL_expect & XFAKEBRACK) { |
3013 | PL_expect &= XENUMMASK; | |
3280af22 | 3014 | PL_bufptr = s; |
cea2e8a9 | 3015 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3016 | } |
79072805 LW |
3017 | force_next('}'); |
3018 | TOKEN(';'); | |
378cc40b LW |
3019 | case '&': |
3020 | s++; | |
3021 | tmp = *s++; | |
3022 | if (tmp == '&') | |
a0d0e21e | 3023 | AOPERATOR(ANDAND); |
378cc40b | 3024 | s--; |
3280af22 | 3025 | if (PL_expect == XOPERATOR) { |
834a4ddd | 3026 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
57843af0 | 3027 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3028 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3029 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3030 | } |
79072805 | 3031 | BAop(OP_BIT_AND); |
463ee0b2 | 3032 | } |
79072805 | 3033 | |
3280af22 NIS |
3034 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3035 | if (*PL_tokenbuf) { | |
3036 | PL_expect = XOPERATOR; | |
3037 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3038 | } |
79072805 LW |
3039 | else |
3040 | PREREF('&'); | |
c07a80fd | 3041 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3042 | TERM('&'); |
3043 | ||
378cc40b LW |
3044 | case '|': |
3045 | s++; | |
3046 | tmp = *s++; | |
3047 | if (tmp == '|') | |
a0d0e21e | 3048 | AOPERATOR(OROR); |
378cc40b | 3049 | s--; |
79072805 | 3050 | BOop(OP_BIT_OR); |
378cc40b LW |
3051 | case '=': |
3052 | s++; | |
3053 | tmp = *s++; | |
3054 | if (tmp == '=') | |
79072805 LW |
3055 | Eop(OP_EQ); |
3056 | if (tmp == '>') | |
3057 | OPERATOR(','); | |
378cc40b | 3058 | if (tmp == '~') |
79072805 | 3059 | PMop(OP_MATCH); |
599cee73 | 3060 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3061 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3062 | s--; |
3280af22 NIS |
3063 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3064 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3065 | { |
3280af22 NIS |
3066 | if (PL_in_eval && !PL_rsfp) { |
3067 | d = PL_bufend; | |
a5f75d66 AD |
3068 | while (s < d) { |
3069 | if (*s++ == '\n') { | |
3070 | incline(s); | |
3071 | if (strnEQ(s,"=cut",4)) { | |
3072 | s = strchr(s,'\n'); | |
3073 | if (s) | |
3074 | s++; | |
3075 | else | |
3076 | s = d; | |
3077 | incline(s); | |
3078 | goto retry; | |
3079 | } | |
3080 | } | |
3081 | } | |
3082 | goto retry; | |
3083 | } | |
3280af22 NIS |
3084 | s = PL_bufend; |
3085 | PL_doextract = TRUE; | |
a0d0e21e LW |
3086 | goto retry; |
3087 | } | |
3280af22 | 3088 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3089 | char *t; |
51882d45 | 3090 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3091 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3092 | #else |
3093 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3094 | #endif | |
a0d0e21e LW |
3095 | if (*t == '\n' || *t == '#') { |
3096 | s--; | |
3280af22 | 3097 | PL_expect = XBLOCK; |
a0d0e21e LW |
3098 | goto leftbracket; |
3099 | } | |
79072805 | 3100 | } |
a0d0e21e LW |
3101 | yylval.ival = 0; |
3102 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3103 | case '!': |
3104 | s++; | |
3105 | tmp = *s++; | |
3106 | if (tmp == '=') | |
79072805 | 3107 | Eop(OP_NE); |
378cc40b | 3108 | if (tmp == '~') |
79072805 | 3109 | PMop(OP_NOT); |
378cc40b LW |
3110 | s--; |
3111 | OPERATOR('!'); | |
3112 | case '<': | |
3280af22 | 3113 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3114 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3115 | check_uni(); |
79072805 LW |
3116 | if (s[1] == '<') |
3117 | s = scan_heredoc(s); | |
3118 | else | |
3119 | s = scan_inputsymbol(s); | |
3120 | TERM(sublex_start()); | |
378cc40b LW |
3121 | } |
3122 | s++; | |
3123 | tmp = *s++; | |
3124 | if (tmp == '<') | |
79072805 | 3125 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3126 | if (tmp == '=') { |
3127 | tmp = *s++; | |
3128 | if (tmp == '>') | |
79072805 | 3129 | Eop(OP_NCMP); |
395c3793 | 3130 | s--; |
79072805 | 3131 | Rop(OP_LE); |
395c3793 | 3132 | } |
378cc40b | 3133 | s--; |
79072805 | 3134 | Rop(OP_LT); |
378cc40b LW |
3135 | case '>': |
3136 | s++; | |
3137 | tmp = *s++; | |
3138 | if (tmp == '>') | |
79072805 | 3139 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3140 | if (tmp == '=') |
79072805 | 3141 | Rop(OP_GE); |
378cc40b | 3142 | s--; |
79072805 | 3143 | Rop(OP_GT); |
378cc40b LW |
3144 | |
3145 | case '$': | |
bbce6d69 | 3146 | CLINE; |
3147 | ||
3280af22 NIS |
3148 | if (PL_expect == XOPERATOR) { |
3149 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3150 | PL_expect = XTERM; | |
a0d0e21e | 3151 | depcom(); |
bbce6d69 | 3152 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3153 | } |
8990e307 | 3154 | } |
a0d0e21e | 3155 | |
834a4ddd | 3156 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 | 3157 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3158 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3159 | sizeof PL_tokenbuf - 1, FALSE); | |
3160 | if (PL_expect == XOPERATOR) | |
3161 | no_op("Array length", s); | |
3280af22 | 3162 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3163 | PREREF(DOLSHARP); |
3280af22 NIS |
3164 | PL_expect = XOPERATOR; |
3165 | PL_pending_ident = '#'; | |
463ee0b2 | 3166 | TOKEN(DOLSHARP); |
79072805 | 3167 | } |
bbce6d69 | 3168 | |
3280af22 | 3169 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3170 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3171 | sizeof PL_tokenbuf - 1, FALSE); | |
3172 | if (PL_expect == XOPERATOR) | |
3173 | no_op("Scalar", s); | |
3280af22 NIS |
3174 | if (!PL_tokenbuf[1]) { |
3175 | if (s == PL_bufend) | |
bbce6d69 | 3176 | yyerror("Final $ should be \\$ or $name"); |
3177 | PREREF('$'); | |
8990e307 | 3178 | } |
a0d0e21e | 3179 | |
bbce6d69 | 3180 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3181 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3182 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3183 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3184 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3185 | TERM(THING); | |
3186 | } | |
3187 | ||
ff68c719 | 3188 | d = s; |
69d2bceb | 3189 | tmp = (I32)*s; |
3280af22 | 3190 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3191 | s = skipspace(s); |
3192 | ||
3280af22 | 3193 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3194 | char *t; |
3195 | if (*s == '[') { | |
3280af22 | 3196 | PL_tokenbuf[0] = '@'; |
599cee73 | 3197 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3198 | for(t = s + 1; |
834a4ddd | 3199 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 3200 | t++) ; |
a0d0e21e | 3201 | if (*t++ == ',') { |
3280af22 NIS |
3202 | PL_bufptr = skipspace(PL_bufptr); |
3203 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3204 | t++; |
cea2e8a9 | 3205 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3206 | "Multidimensional syntax %.*s not supported", |
3207 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3208 | } |
3209 | } | |
bbce6d69 | 3210 | } |
3211 | else if (*s == '{') { | |
3280af22 | 3212 | PL_tokenbuf[0] = '%'; |
599cee73 | 3213 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3214 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3215 | { | |
3280af22 | 3216 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3217 | STRLEN len; |
3218 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 3219 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 3220 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3221 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3222 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3223 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3224 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3225 | } |
93a17b20 LW |
3226 | } |
3227 | } | |
2f3197b3 | 3228 | } |
bbce6d69 | 3229 | |
3280af22 | 3230 | PL_expect = XOPERATOR; |
69d2bceb | 3231 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3232 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3233 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3234 | PL_expect = XOPERATOR; | |
bbce6d69 | 3235 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3236 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 3237 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 3238 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 3239 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 3240 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3241 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3242 | if (tmp = keyword(tmpbuf, len)) { |
3243 | /* binary operators exclude handle interpretations */ | |
3244 | switch (tmp) { | |
3245 | case -KEY_x: | |
3246 | case -KEY_eq: | |
3247 | case -KEY_ne: | |
3248 | case -KEY_gt: | |
3249 | case -KEY_lt: | |
3250 | case -KEY_ge: | |
3251 | case -KEY_le: | |
3252 | case -KEY_cmp: | |
3253 | break; | |
3254 | default: | |
3280af22 | 3255 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3256 | break; |
3257 | } | |
3258 | } | |
68dc0745 | 3259 | else { |
3260 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3261 | if (gv && GvCVu(gv)) | |
3280af22 | 3262 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3263 | } |
93a17b20 | 3264 | } |
bbce6d69 | 3265 | else if (isDIGIT(*s)) |
3280af22 | 3266 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3267 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3268 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3269 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3270 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3271 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3272 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3273 | } |
3280af22 | 3274 | PL_pending_ident = '$'; |
79072805 | 3275 | TOKEN('$'); |
378cc40b LW |
3276 | |
3277 | case '@': | |
3280af22 | 3278 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3279 | no_op("Array", s); |
3280af22 NIS |
3280 | PL_tokenbuf[0] = '@'; |
3281 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3282 | if (!PL_tokenbuf[1]) { | |
3283 | if (s == PL_bufend) | |
bbce6d69 | 3284 | yyerror("Final @ should be \\@ or @name"); |
3285 | PREREF('@'); | |
3286 | } | |
3280af22 | 3287 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3288 | s = skipspace(s); |
3280af22 | 3289 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3290 | if (*s == '{') |
3280af22 | 3291 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3292 | |
3293 | /* Warn about @ where they meant $. */ | |
599cee73 | 3294 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3295 | if (*s == '[' || *s == '{') { |
3296 | char *t = s + 1; | |
834a4ddd | 3297 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3298 | t++; |
3299 | if (*t == '}' || *t == ']') { | |
3300 | t++; | |
3280af22 | 3301 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3302 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3303 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3304 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3305 | } |
93a17b20 LW |
3306 | } |
3307 | } | |
463ee0b2 | 3308 | } |
3280af22 | 3309 | PL_pending_ident = '@'; |
79072805 | 3310 | TERM('@'); |
378cc40b LW |
3311 | |
3312 | case '/': /* may either be division or pattern */ | |
3313 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3314 | if (PL_expect != XOPERATOR) { |
c277df42 | 3315 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3316 | if (PL_oldoldbufptr == PL_last_uni |
3317 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 3318 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 3319 | check_uni(); |
8782bef2 | 3320 | s = scan_pat(s,OP_MATCH); |
79072805 | 3321 | TERM(sublex_start()); |
378cc40b LW |
3322 | } |
3323 | tmp = *s++; | |
a687059c | 3324 | if (tmp == '/') |
79072805 | 3325 | Mop(OP_DIVIDE); |
378cc40b LW |
3326 | OPERATOR(tmp); |
3327 | ||
3328 | case '.': | |
51882d45 GS |
3329 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3330 | #ifdef PERL_STRICT_CR | |
3331 | && s[1] == '\n' | |
3332 | #else | |
3333 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3334 | #endif | |
3335 | && (s == PL_linestart || s[-1] == '\n') ) | |
3336 | { | |
3280af22 NIS |
3337 | PL_lex_formbrack = 0; |
3338 | PL_expect = XSTATE; | |
79072805 LW |
3339 | goto rightbracket; |
3340 | } | |
3280af22 | 3341 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3342 | tmp = *s++; |
a687059c LW |
3343 | if (*s == tmp) { |
3344 | s++; | |
2f3197b3 LW |
3345 | if (*s == tmp) { |
3346 | s++; | |
79072805 | 3347 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3348 | } |
3349 | else | |
79072805 | 3350 | yylval.ival = 0; |
378cc40b | 3351 | OPERATOR(DOTDOT); |
a687059c | 3352 | } |
3280af22 | 3353 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3354 | check_uni(); |
79072805 | 3355 | Aop(OP_CONCAT); |
378cc40b LW |
3356 | } |
3357 | /* FALL THROUGH */ | |
3358 | case '0': case '1': case '2': case '3': case '4': | |
3359 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3360 | s = scan_num(s); |
3280af22 | 3361 | if (PL_expect == XOPERATOR) |
8990e307 | 3362 | no_op("Number",s); |
79072805 LW |
3363 | TERM(THING); |
3364 | ||
3365 | case '\'': | |
09bef843 | 3366 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3367 | if (PL_expect == XOPERATOR) { |
3368 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3369 | PL_expect = XTERM; | |
a0d0e21e LW |
3370 | depcom(); |
3371 | return ','; /* grandfather non-comma-format format */ | |
3372 | } | |
463ee0b2 | 3373 | else |
8990e307 | 3374 | no_op("String",s); |
463ee0b2 | 3375 | } |
79072805 | 3376 | if (!s) |
85e6fe83 | 3377 | missingterm((char*)0); |
79072805 LW |
3378 | yylval.ival = OP_CONST; |
3379 | TERM(sublex_start()); | |
3380 | ||
3381 | case '"': | |
09bef843 | 3382 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3383 | if (PL_expect == XOPERATOR) { |
3384 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3385 | PL_expect = XTERM; | |
a0d0e21e LW |
3386 | depcom(); |
3387 | return ','; /* grandfather non-comma-format format */ | |
3388 | } | |
463ee0b2 | 3389 | else |
8990e307 | 3390 | no_op("String",s); |
463ee0b2 | 3391 | } |
79072805 | 3392 | if (!s) |
85e6fe83 | 3393 | missingterm((char*)0); |
4633a7c4 | 3394 | yylval.ival = OP_CONST; |
3280af22 | 3395 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3396 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3397 | yylval.ival = OP_STRINGIFY; |
3398 | break; | |
3399 | } | |
3400 | } | |
79072805 LW |
3401 | TERM(sublex_start()); |
3402 | ||
3403 | case '`': | |
09bef843 | 3404 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3405 | if (PL_expect == XOPERATOR) |
8990e307 | 3406 | no_op("Backticks",s); |
79072805 | 3407 | if (!s) |
85e6fe83 | 3408 | missingterm((char*)0); |
79072805 LW |
3409 | yylval.ival = OP_BACKTICK; |
3410 | set_csh(); | |
3411 | TERM(sublex_start()); | |
3412 | ||
3413 | case '\\': | |
3414 | s++; | |
599cee73 | 3415 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3416 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3417 | *s, *s); |
3280af22 | 3418 | if (PL_expect == XOPERATOR) |
8990e307 | 3419 | no_op("Backslash",s); |
79072805 LW |
3420 | OPERATOR(REFGEN); |
3421 | ||
a7cb1f99 GS |
3422 | case 'v': |
3423 | if (isDIGIT(s[1]) && PL_expect == XTERM) { | |
3424 | char *start = s; | |
3425 | start++; | |
3426 | start++; | |
3427 | while (isDIGIT(*start)) | |
3428 | start++; | |
3429 | if (*start == '.' && isDIGIT(start[1])) { | |
3430 | s = scan_num(s); | |
3431 | TERM(THING); | |
3432 | } | |
3433 | } | |
3434 | goto keylookup; | |
79072805 | 3435 | case 'x': |
3280af22 | 3436 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3437 | s++; |
3438 | Mop(OP_REPEAT); | |
2f3197b3 | 3439 | } |
79072805 LW |
3440 | goto keylookup; |
3441 | ||
378cc40b | 3442 | case '_': |
79072805 LW |
3443 | case 'a': case 'A': |
3444 | case 'b': case 'B': | |
3445 | case 'c': case 'C': | |
3446 | case 'd': case 'D': | |
3447 | case 'e': case 'E': | |
3448 | case 'f': case 'F': | |
3449 | case 'g': case 'G': | |
3450 | case 'h': case 'H': | |
3451 | case 'i': case 'I': | |
3452 | case 'j': case 'J': | |
3453 | case 'k': case 'K': | |
3454 | case 'l': case 'L': | |
3455 | case 'm': case 'M': | |
3456 | case 'n': case 'N': | |
3457 | case 'o': case 'O': | |
3458 | case 'p': case 'P': | |
3459 | case 'q': case 'Q': | |
3460 | case 'r': case 'R': | |
3461 | case 's': case 'S': | |
3462 | case 't': case 'T': | |
3463 | case 'u': case 'U': | |
a7cb1f99 | 3464 | case 'V': |
79072805 LW |
3465 | case 'w': case 'W': |
3466 | case 'X': | |
3467 | case 'y': case 'Y': | |
3468 | case 'z': case 'Z': | |
3469 | ||
49dc05e3 | 3470 | keylookup: { |
2d8e6c8d | 3471 | STRLEN n_a; |
161b471a NIS |
3472 | gv = Nullgv; |
3473 | gvp = 0; | |
49dc05e3 | 3474 | |
3280af22 NIS |
3475 | PL_bufptr = s; |
3476 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3477 | |
3478 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3479 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3480 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3481 | (PL_tokenbuf[0] == 'q' && | |
3482 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3483 | |
3484 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3485 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3486 | goto just_a_word; |
3487 | ||
3643fb5f | 3488 | d = s; |
3280af22 | 3489 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3490 | d++; /* no comments skipped here, or s### is misparsed */ |
3491 | ||
3492 | /* Is this a label? */ | |
3280af22 NIS |
3493 | if (!tmp && PL_expect == XSTATE |
3494 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3495 | s = d + 1; |
3280af22 | 3496 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3497 | CLINE; |
3498 | TOKEN(LABEL); | |
3643fb5f CS |
3499 | } |
3500 | ||
3501 | /* Check for keywords */ | |
3280af22 | 3502 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3503 | |
3504 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3505 | if (strnEQ(d,"=>",2)) { |
3506 | CLINE; | |
3280af22 | 3507 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3508 | yylval.opval->op_private = OPpCONST_BARE; |
3509 | TERM(WORD); | |
3510 | } | |
3511 | ||
a0d0e21e | 3512 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3513 | GV *ogv = Nullgv; /* override (winner) */ |
3514 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3515 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3516 | CV *cv; |
3280af22 | 3517 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3518 | (cv = GvCVu(gv))) |
3519 | { | |
3520 | if (GvIMPORTED_CV(gv)) | |
3521 | ogv = gv; | |
3522 | else if (! CvMETHOD(cv)) | |
3523 | hgv = gv; | |
3524 | } | |
3525 | if (!ogv && | |
3280af22 NIS |
3526 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3527 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3528 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3529 | { | |
3530 | ogv = gv; | |
3531 | } | |
3532 | } | |
3533 | if (ogv) { | |
3534 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3535 | } |
3536 | else if (gv && !gvp | |
3537 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 3538 | && GvCVu(gv) |
3280af22 | 3539 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3540 | { |
3541 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3542 | } |
56f7f34b CS |
3543 | else { /* no override */ |
3544 | tmp = -tmp; | |
3545 | gv = Nullgv; | |
3546 | gvp = 0; | |
4944e2f7 GS |
3547 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3548 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3549 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3550 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3551 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3552 | } |
a0d0e21e LW |
3553 | } |
3554 | ||
3555 | reserved_word: | |
3556 | switch (tmp) { | |
79072805 LW |
3557 | |
3558 | default: /* not a keyword */ | |
93a17b20 | 3559 | just_a_word: { |
96e4d5b1 | 3560 | SV *sv; |
3280af22 | 3561 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3562 | |
3563 | /* Get the rest if it looks like a package qualifier */ | |
3564 | ||
a0d0e21e | 3565 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3566 | STRLEN morelen; |
3280af22 | 3567 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3568 | TRUE, &morelen); |
3569 | if (!morelen) | |
cea2e8a9 | 3570 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3571 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3572 | len += morelen; |
a0d0e21e | 3573 | } |
8990e307 | 3574 | |
3280af22 NIS |
3575 | if (PL_expect == XOPERATOR) { |
3576 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3577 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3578 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3579 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3580 | } |
3581 | else | |
54310121 | 3582 | no_op("Bareword",s); |
463ee0b2 | 3583 | } |
8990e307 | 3584 | |
c3e0f903 GS |
3585 | /* Look for a subroutine with this name in current package, |
3586 | unless name is "Foo::", in which case Foo is a bearword | |
3587 | (and a package name). */ | |
3588 | ||
3589 | if (len > 2 && | |
3280af22 | 3590 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3591 | { |
599cee73 | 3592 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
cea2e8a9 | 3593 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3594 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3595 | PL_tokenbuf); |
c3e0f903 | 3596 | len -= 2; |
3280af22 | 3597 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3598 | gv = Nullgv; |
3599 | gvp = 0; | |
3600 | } | |
3601 | else { | |
3602 | len = 0; | |
3603 | if (!gv) | |
3280af22 | 3604 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3605 | } |
3606 | ||
3607 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3608 | |
49dc05e3 | 3609 | if (gvp) { |
79cb57f6 | 3610 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3611 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3612 | } |
3613 | else | |
3280af22 | 3614 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3615 | |
a0d0e21e LW |
3616 | /* Presume this is going to be a bareword of some sort. */ |
3617 | ||
3618 | CLINE; | |
49dc05e3 | 3619 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3620 | yylval.opval->op_private = OPpCONST_BARE; |
3621 | ||
c3e0f903 GS |
3622 | /* And if "Foo::", then that's what it certainly is. */ |
3623 | ||
3624 | if (len) | |
3625 | goto safe_bareword; | |
3626 | ||
8990e307 LW |
3627 | /* See if it's the indirect object for a list operator. */ |
3628 | ||
3280af22 NIS |
3629 | if (PL_oldoldbufptr && |
3630 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3631 | (PL_oldoldbufptr == PL_last_lop |
3632 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3633 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3634 | (PL_expect == XREF || |
3635 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3636 | { |
748a9306 LW |
3637 | bool immediate_paren = *s == '('; |
3638 | ||
a0d0e21e LW |
3639 | /* (Now we can afford to cross potential line boundary.) */ |
3640 | s = skipspace(s); | |
3641 | ||
3642 | /* Two barewords in a row may indicate method call. */ | |
3643 | ||
834a4ddd | 3644 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3645 | return tmp; |
3646 | ||
3647 | /* If not a declared subroutine, it's an indirect object. */ | |
3648 | /* (But it's an indir obj regardless for sort.) */ | |
3649 | ||
3280af22 | 3650 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3651 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3652 | (PL_last_lop_op != OP_MAPSTART && | |
3653 | PL_last_lop_op != OP_GREPSTART)) | |
3654 | { | |
3280af22 | 3655 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3656 | goto bareword; |
93a17b20 LW |
3657 | } |
3658 | } | |
8990e307 LW |
3659 | |
3660 | /* If followed by a paren, it's certainly a subroutine. */ | |
3661 | ||
3280af22 | 3662 | PL_expect = XOPERATOR; |
8990e307 | 3663 | s = skipspace(s); |
93a17b20 | 3664 | if (*s == '(') { |
79072805 | 3665 | CLINE; |
96e4d5b1 | 3666 | if (gv && GvCVu(gv)) { |
3667 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3668 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3669 | s = d + 1; |
3670 | goto its_constant; | |
3671 | } | |
3672 | } | |
3280af22 NIS |
3673 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3674 | PL_expect = XOPERATOR; | |
93a17b20 | 3675 | force_next(WORD); |
c07a80fd | 3676 | yylval.ival = 0; |
463ee0b2 | 3677 | TOKEN('&'); |
79072805 | 3678 | } |
93a17b20 | 3679 | |
a0d0e21e | 3680 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3681 | |
8ebc5c01 | 3682 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3683 | PL_last_lop = PL_oldbufptr; |
3684 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3685 | PREBLOCK(METHOD); |
463ee0b2 LW |
3686 | } |
3687 | ||
8990e307 LW |
3688 | /* If followed by a bareword, see if it looks like indir obj. */ |
3689 | ||
834a4ddd | 3690 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3691 | return tmp; |
93a17b20 | 3692 | |
8990e307 LW |
3693 | /* Not a method, so call it a subroutine (if defined) */ |
3694 | ||
8ebc5c01 | 3695 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3696 | CV* cv; |
0453d815 PM |
3697 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3698 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3699 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3700 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3701 | /* Check for a constant sub */ |
46fc3d4c | 3702 | cv = GvCV(gv); |
96e4d5b1 | 3703 | if ((sv = cv_const_sv(cv))) { |
3704 | its_constant: | |
3705 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3706 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3707 | yylval.opval->op_private = 0; | |
3708 | TOKEN(WORD); | |
89bfa8cd | 3709 | } |
3710 | ||
a5f75d66 AD |
3711 | /* Resolve to GV now. */ |
3712 | op_free(yylval.opval); | |
3713 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3714 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3715 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3716 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3717 | /* Is there a prototype? */ |
3718 | if (SvPOK(cv)) { | |
3719 | STRLEN len; | |
7a52d87a | 3720 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3721 | if (!len) |
3722 | TERM(FUNC0SUB); | |
7a52d87a | 3723 | if (strEQ(proto, "$")) |
4633a7c4 | 3724 | OPERATOR(UNIOPSUB); |
7a52d87a | 3725 | if (*proto == '&' && *s == '{') { |
3280af22 | 3726 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3727 | PREBLOCK(LSTOPSUB); |
3728 | } | |
a9ef352a | 3729 | } |
3280af22 NIS |
3730 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3731 | PL_expect = XTERM; | |
8990e307 LW |
3732 | force_next(WORD); |
3733 | TOKEN(NOAMP); | |
3734 | } | |
748a9306 | 3735 | |
8990e307 LW |
3736 | /* Call it a bare word */ |
3737 | ||
5603f27d GS |
3738 | if (PL_hints & HINT_STRICT_SUBS) |
3739 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3740 | else { | |
3741 | bareword: | |
3742 | if (ckWARN(WARN_RESERVED)) { | |
3743 | if (lastchar != '-') { | |
3744 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3745 | if (!*d) | |
cea2e8a9 | 3746 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3747 | PL_tokenbuf); |
3748 | } | |
748a9306 LW |
3749 | } |
3750 | } | |
c3e0f903 GS |
3751 | |
3752 | safe_bareword: | |
f248d071 | 3753 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3754 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3755 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3756 | lastchar, PL_tokenbuf); |
0453d815 PM |
3757 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3758 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3759 | lastchar, lastchar); |
3760 | } | |
93a17b20 | 3761 | TOKEN(WORD); |
79072805 | 3762 | } |
79072805 | 3763 | |
68dc0745 | 3764 | case KEY___FILE__: |
46fc3d4c | 3765 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 3766 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 3767 | TERM(THING); |
3768 | ||
79072805 | 3769 | case KEY___LINE__: |
cf2093f6 | 3770 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3771 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3772 | TERM(THING); |
68dc0745 | 3773 | |
3774 | case KEY___PACKAGE__: | |
3775 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3776 | (PL_curstash |
3777 | ? newSVsv(PL_curstname) | |
3778 | : &PL_sv_undef)); | |
79072805 | 3779 | TERM(THING); |
79072805 | 3780 | |
e50aee73 | 3781 | case KEY___DATA__: |
79072805 LW |
3782 | case KEY___END__: { |
3783 | GV *gv; | |
79072805 LW |
3784 | |
3785 | /*SUPPRESS 560*/ | |
3280af22 | 3786 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3787 | char *pname = "main"; |
3280af22 NIS |
3788 | if (PL_tokenbuf[2] == 'D') |
3789 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3790 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3791 | GvMULTI_on(gv); |
79072805 | 3792 | if (!GvIO(gv)) |
a0d0e21e | 3793 | GvIOp(gv) = newIO(); |
3280af22 | 3794 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3795 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3796 | { | |
3280af22 | 3797 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3798 | fcntl(fd,F_SETFD,fd >= 3); |
3799 | } | |
79072805 | 3800 | #endif |
fd049845 | 3801 | /* Mark this internal pseudo-handle as clean */ |
3802 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3803 | if (PL_preprocess) |
a0d0e21e | 3804 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3805 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3806 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3807 | else |
a0d0e21e | 3808 | IoTYPE(GvIOp(gv)) = '<'; |
c39cd008 GS |
3809 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
3810 | /* if the script was opened in binmode, we need to revert | |
3811 | * it to text mode for compatibility. | |
3812 | * XXX this is a questionable hack at best. */ | |
3813 | { | |
3814 | Off_t loc = 0; | |
3815 | if (IoTYPE(GvIOp(gv)) == '<') { | |
3816 | loc = PerlIO_tell(PL_rsfp); | |
3817 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
3818 | } | |
3819 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { | |
3820 | #if defined(__BORLANDC__) | |
3821 | /* XXX see note in do_binmode() */ | |
3822 | ((FILE*)PL_rsfp)->flags |= _F_BIN; | |
3823 | #endif | |
3824 | if (loc > 0) | |
3825 | PerlIO_seek(PL_rsfp, loc, 0); | |
3826 | } | |
3827 | } | |
3828 | #endif | |
3280af22 | 3829 | PL_rsfp = Nullfp; |
79072805 LW |
3830 | } |
3831 | goto fake_eof; | |
e929a76b | 3832 | } |
de3bb511 | 3833 | |
8990e307 | 3834 | case KEY_AUTOLOAD: |
ed6116ce | 3835 | case KEY_DESTROY: |
79072805 LW |
3836 | case KEY_BEGIN: |
3837 | case KEY_END: | |
4f25aa18 | 3838 | case KEY_STOP: |
7d07dbc2 | 3839 | case KEY_INIT: |
3280af22 NIS |
3840 | if (PL_expect == XSTATE) { |
3841 | s = PL_bufptr; | |
93a17b20 | 3842 | goto really_sub; |
79072805 LW |
3843 | } |
3844 | goto just_a_word; | |
3845 | ||
a0d0e21e LW |
3846 | case KEY_CORE: |
3847 | if (*s == ':' && s[1] == ':') { | |
3848 | s += 2; | |
748a9306 | 3849 | d = s; |
3280af22 NIS |
3850 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3851 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3852 | if (tmp < 0) |
3853 | tmp = -tmp; | |
3854 | goto reserved_word; | |
3855 | } | |
3856 | goto just_a_word; | |
3857 | ||
463ee0b2 LW |
3858 | case KEY_abs: |
3859 | UNI(OP_ABS); | |
3860 | ||
79072805 LW |
3861 | case KEY_alarm: |
3862 | UNI(OP_ALARM); | |
3863 | ||
3864 | case KEY_accept: | |
a0d0e21e | 3865 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3866 | |
463ee0b2 LW |
3867 | case KEY_and: |
3868 | OPERATOR(ANDOP); | |
3869 | ||
79072805 | 3870 | case KEY_atan2: |
a0d0e21e | 3871 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3872 | |
79072805 | 3873 | case KEY_bind: |
a0d0e21e | 3874 | LOP(OP_BIND,XTERM); |
79072805 LW |
3875 | |
3876 | case KEY_binmode: | |
3877 | UNI(OP_BINMODE); | |
3878 | ||
3879 | case KEY_bless: | |
a0d0e21e | 3880 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3881 | |
3882 | case KEY_chop: | |
3883 | UNI(OP_CHOP); | |
3884 | ||
3885 | case KEY_continue: | |
3886 | PREBLOCK(CONTINUE); | |
3887 | ||
3888 | case KEY_chdir: | |
85e6fe83 | 3889 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3890 | UNI(OP_CHDIR); |
3891 | ||
3892 | case KEY_close: | |
3893 | UNI(OP_CLOSE); | |
3894 | ||
3895 | case KEY_closedir: | |
3896 | UNI(OP_CLOSEDIR); | |
3897 | ||
3898 | case KEY_cmp: | |
3899 | Eop(OP_SCMP); | |
3900 | ||
3901 | case KEY_caller: | |
3902 | UNI(OP_CALLER); | |
3903 | ||
3904 | case KEY_crypt: | |
3905 | #ifdef FCRYPT | |
f4c556ac GS |
3906 | if (!PL_cryptseen) { |
3907 | PL_cryptseen = TRUE; | |
de3bb511 | 3908 | init_des(); |
f4c556ac | 3909 | } |
a687059c | 3910 | #endif |
a0d0e21e | 3911 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3912 | |
3913 | case KEY_chmod: | |
599cee73 | 3914 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3915 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 3916 | if (*d != '0' && isDIGIT(*d)) |
4438c4b7 JH |
3917 | Perl_warner(aTHX_ WARN_OCTAL, |
3918 | "chmod: mode argument is missing initial 0"); | |
748a9306 | 3919 | } |
a0d0e21e | 3920 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3921 | |
3922 | case KEY_chown: | |
a0d0e21e | 3923 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3924 | |
3925 | case KEY_connect: | |
a0d0e21e | 3926 | LOP(OP_CONNECT,XTERM); |
79072805 | 3927 | |
463ee0b2 LW |
3928 | case KEY_chr: |
3929 | UNI(OP_CHR); | |
3930 | ||
79072805 LW |
3931 | case KEY_cos: |
3932 | UNI(OP_COS); | |
3933 | ||
3934 | case KEY_chroot: | |
3935 | UNI(OP_CHROOT); | |
3936 | ||
3937 | case KEY_do: | |
3938 | s = skipspace(s); | |
3939 | if (*s == '{') | |
a0d0e21e | 3940 | PRETERMBLOCK(DO); |
79072805 | 3941 | if (*s != '\'') |
a0d0e21e | 3942 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3943 | OPERATOR(DO); |
79072805 LW |
3944 | |
3945 | case KEY_die: | |
3280af22 | 3946 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3947 | LOP(OP_DIE,XTERM); |
79072805 LW |
3948 | |
3949 | case KEY_defined: | |
3950 | UNI(OP_DEFINED); | |
3951 | ||
3952 | case KEY_delete: | |
a0d0e21e | 3953 | UNI(OP_DELETE); |
79072805 LW |
3954 | |
3955 | case KEY_dbmopen: | |
a0d0e21e LW |
3956 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3957 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3958 | |
3959 | case KEY_dbmclose: | |
3960 | UNI(OP_DBMCLOSE); | |
3961 | ||
3962 | case KEY_dump: | |
a0d0e21e | 3963 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3964 | LOOPX(OP_DUMP); |
3965 | ||
3966 | case KEY_else: | |
3967 | PREBLOCK(ELSE); | |
3968 | ||
3969 | case KEY_elsif: | |
57843af0 | 3970 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
3971 | OPERATOR(ELSIF); |
3972 | ||
3973 | case KEY_eq: | |
3974 | Eop(OP_SEQ); | |
3975 | ||
a0d0e21e LW |
3976 | case KEY_exists: |
3977 | UNI(OP_EXISTS); | |
3978 | ||
79072805 LW |
3979 | case KEY_exit: |
3980 | UNI(OP_EXIT); | |
3981 | ||
3982 | case KEY_eval: | |
79072805 | 3983 | s = skipspace(s); |
3280af22 | 3984 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3985 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3986 | |
3987 | case KEY_eof: | |
3988 | UNI(OP_EOF); | |
3989 | ||
3990 | case KEY_exp: | |
3991 | UNI(OP_EXP); | |
3992 | ||
3993 | case KEY_each: | |
3994 | UNI(OP_EACH); | |
3995 | ||
3996 | case KEY_exec: | |
3997 | set_csh(); | |
a0d0e21e | 3998 | LOP(OP_EXEC,XREF); |
79072805 LW |
3999 | |
4000 | case KEY_endhostent: | |
4001 | FUN0(OP_EHOSTENT); | |
4002 | ||
4003 | case KEY_endnetent: | |
4004 | FUN0(OP_ENETENT); | |
4005 | ||
4006 | case KEY_endservent: | |
4007 | FUN0(OP_ESERVENT); | |
4008 | ||
4009 | case KEY_endprotoent: | |
4010 | FUN0(OP_EPROTOENT); | |
4011 | ||
4012 | case KEY_endpwent: | |
4013 | FUN0(OP_EPWENT); | |
4014 | ||
4015 | case KEY_endgrent: | |
4016 | FUN0(OP_EGRENT); | |
4017 | ||
4018 | case KEY_for: | |
4019 | case KEY_foreach: | |
57843af0 | 4020 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4021 | s = skipspace(s); |
834a4ddd | 4022 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 4023 | char *p = s; |
3280af22 | 4024 | if ((PL_bufend - p) >= 3 && |
55497cff | 4025 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4026 | p += 2; | |
77ca0c92 LW |
4027 | else if ((PL_bufend - p) >= 4 && |
4028 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4029 | p += 3; | |
55497cff | 4030 | p = skipspace(p); |
77ca0c92 LW |
4031 | if (isIDFIRST_lazy(p)) { |
4032 | p = scan_ident(p, PL_bufend, | |
4033 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4034 | p = skipspace(p); | |
4035 | } | |
4036 | if (*p != '$') | |
cea2e8a9 | 4037 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4038 | } |
79072805 LW |
4039 | OPERATOR(FOR); |
4040 | ||
4041 | case KEY_formline: | |
a0d0e21e | 4042 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4043 | |
4044 | case KEY_fork: | |
4045 | FUN0(OP_FORK); | |
4046 | ||
4047 | case KEY_fcntl: | |
a0d0e21e | 4048 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4049 | |
4050 | case KEY_fileno: | |
4051 | UNI(OP_FILENO); | |
4052 | ||
4053 | case KEY_flock: | |
a0d0e21e | 4054 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4055 | |
4056 | case KEY_gt: | |
4057 | Rop(OP_SGT); | |
4058 | ||
4059 | case KEY_ge: | |
4060 | Rop(OP_SGE); | |
4061 | ||
4062 | case KEY_grep: | |
a0d0e21e | 4063 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
4064 | |
4065 | case KEY_goto: | |
a0d0e21e | 4066 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4067 | LOOPX(OP_GOTO); |
4068 | ||
4069 | case KEY_gmtime: | |
4070 | UNI(OP_GMTIME); | |
4071 | ||
4072 | case KEY_getc: | |
4073 | UNI(OP_GETC); | |
4074 | ||
4075 | case KEY_getppid: | |
4076 | FUN0(OP_GETPPID); | |
4077 | ||
4078 | case KEY_getpgrp: | |
4079 | UNI(OP_GETPGRP); | |
4080 | ||
4081 | case KEY_getpriority: | |
a0d0e21e | 4082 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4083 | |
4084 | case KEY_getprotobyname: | |
4085 | UNI(OP_GPBYNAME); | |
4086 | ||
4087 | case KEY_getprotobynumber: | |
a0d0e21e | 4088 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4089 | |
4090 | case KEY_getprotoent: | |
4091 | FUN0(OP_GPROTOENT); | |
4092 | ||
4093 | case KEY_getpwent: | |
4094 | FUN0(OP_GPWENT); | |
4095 | ||
4096 | case KEY_getpwnam: | |
ff68c719 | 4097 | UNI(OP_GPWNAM); |
79072805 LW |
4098 | |
4099 | case KEY_getpwuid: | |
ff68c719 | 4100 | UNI(OP_GPWUID); |
79072805 LW |
4101 | |
4102 | case KEY_getpeername: | |
4103 | UNI(OP_GETPEERNAME); | |
4104 | ||
4105 | case KEY_gethostbyname: | |
4106 | UNI(OP_GHBYNAME); | |
4107 | ||
4108 | case KEY_gethostbyaddr: | |
a0d0e21e | 4109 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4110 | |
4111 | case KEY_gethostent: | |
4112 | FUN0(OP_GHOSTENT); | |
4113 | ||
4114 | case KEY_getnetbyname: | |
4115 | UNI(OP_GNBYNAME); | |
4116 | ||
4117 | case KEY_getnetbyaddr: | |
a0d0e21e | 4118 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4119 | |
4120 | case KEY_getnetent: | |
4121 | FUN0(OP_GNETENT); | |
4122 | ||
4123 | case KEY_getservbyname: | |
a0d0e21e | 4124 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4125 | |
4126 | case KEY_getservbyport: | |
a0d0e21e | 4127 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4128 | |
4129 | case KEY_getservent: | |
4130 | FUN0(OP_GSERVENT); | |
4131 | ||
4132 | case KEY_getsockname: | |
4133 | UNI(OP_GETSOCKNAME); | |
4134 | ||
4135 | case KEY_getsockopt: | |
a0d0e21e | 4136 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4137 | |
4138 | case KEY_getgrent: | |
4139 | FUN0(OP_GGRENT); | |
4140 | ||
4141 | case KEY_getgrnam: | |
ff68c719 | 4142 | UNI(OP_GGRNAM); |
79072805 LW |
4143 | |
4144 | case KEY_getgrgid: | |
ff68c719 | 4145 | UNI(OP_GGRGID); |
79072805 LW |
4146 | |
4147 | case KEY_getlogin: | |
4148 | FUN0(OP_GETLOGIN); | |
4149 | ||
93a17b20 | 4150 | case KEY_glob: |
a0d0e21e LW |
4151 | set_csh(); |
4152 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4153 | |
79072805 LW |
4154 | case KEY_hex: |
4155 | UNI(OP_HEX); | |
4156 | ||
4157 | case KEY_if: | |
57843af0 | 4158 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4159 | OPERATOR(IF); |
4160 | ||
4161 | case KEY_index: | |
a0d0e21e | 4162 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4163 | |
4164 | case KEY_int: | |
4165 | UNI(OP_INT); | |
4166 | ||
4167 | case KEY_ioctl: | |
a0d0e21e | 4168 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4169 | |
4170 | case KEY_join: | |
a0d0e21e | 4171 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4172 | |
4173 | case KEY_keys: | |
4174 | UNI(OP_KEYS); | |
4175 | ||
4176 | case KEY_kill: | |
a0d0e21e | 4177 | LOP(OP_KILL,XTERM); |
79072805 LW |
4178 | |
4179 | case KEY_last: | |
a0d0e21e | 4180 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4181 | LOOPX(OP_LAST); |
a0d0e21e | 4182 | |
79072805 LW |
4183 | case KEY_lc: |
4184 | UNI(OP_LC); | |
4185 | ||
4186 | case KEY_lcfirst: | |
4187 | UNI(OP_LCFIRST); | |
4188 | ||
4189 | case KEY_local: | |
09bef843 | 4190 | yylval.ival = 0; |
79072805 LW |
4191 | OPERATOR(LOCAL); |
4192 | ||
4193 | case KEY_length: | |
4194 | UNI(OP_LENGTH); | |
4195 | ||
4196 | case KEY_lt: | |
4197 | Rop(OP_SLT); | |
4198 | ||
4199 | case KEY_le: | |
4200 | Rop(OP_SLE); | |
4201 | ||
4202 | case KEY_localtime: | |
4203 | UNI(OP_LOCALTIME); | |
4204 | ||
4205 | case KEY_log: | |
4206 | UNI(OP_LOG); | |
4207 | ||
4208 | case KEY_link: | |
a0d0e21e | 4209 | LOP(OP_LINK,XTERM); |
79072805 LW |
4210 | |
4211 | case KEY_listen: | |
a0d0e21e | 4212 | LOP(OP_LISTEN,XTERM); |
79072805 | 4213 | |
c0329465 MB |
4214 | case KEY_lock: |
4215 | UNI(OP_LOCK); | |
4216 | ||
79072805 LW |
4217 | case KEY_lstat: |
4218 | UNI(OP_LSTAT); | |
4219 | ||
4220 | case KEY_m: | |
8782bef2 | 4221 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4222 | TERM(sublex_start()); |
4223 | ||
a0d0e21e | 4224 | case KEY_map: |
4e4e412b GS |
4225 | LOP(OP_MAPSTART, *s == '(' ? XTERM : XREF); |
4226 | ||
79072805 | 4227 | case KEY_mkdir: |
a0d0e21e | 4228 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4229 | |
4230 | case KEY_msgctl: | |
a0d0e21e | 4231 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4232 | |
4233 | case KEY_msgget: | |
a0d0e21e | 4234 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4235 | |
4236 | case KEY_msgrcv: | |
a0d0e21e | 4237 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4238 | |
4239 | case KEY_msgsnd: | |
a0d0e21e | 4240 | LOP(OP_MSGSND,XTERM); |
79072805 | 4241 | |
77ca0c92 | 4242 | case KEY_our: |
93a17b20 | 4243 | case KEY_my: |
77ca0c92 | 4244 | PL_in_my = tmp; |
c750a3ec | 4245 | s = skipspace(s); |
834a4ddd | 4246 | if (isIDFIRST_lazy(s)) { |
3280af22 | 4247 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4248 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4249 | goto really_sub; | |
3280af22 NIS |
4250 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4251 | if (!PL_in_my_stash) { | |
c750a3ec | 4252 | char tmpbuf[1024]; |
3280af22 NIS |
4253 | PL_bufptr = s; |
4254 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4255 | yyerror(tmpbuf); |
4256 | } | |
4257 | } | |
09bef843 | 4258 | yylval.ival = 1; |
55497cff | 4259 | OPERATOR(MY); |
93a17b20 | 4260 | |
79072805 | 4261 | case KEY_next: |
a0d0e21e | 4262 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4263 | LOOPX(OP_NEXT); |
4264 | ||
4265 | case KEY_ne: | |
4266 | Eop(OP_SNE); | |
4267 | ||
a0d0e21e | 4268 | case KEY_no: |
3280af22 | 4269 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4270 | yyerror("\"no\" not allowed in expression"); |
4271 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4272 | s = force_version(s); |
a0d0e21e LW |
4273 | yylval.ival = 0; |
4274 | OPERATOR(USE); | |
4275 | ||
4276 | case KEY_not: | |
2d2e263d LW |
4277 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4278 | FUN1(OP_NOT); | |
4279 | else | |
4280 | OPERATOR(NOTOP); | |
a0d0e21e | 4281 | |
79072805 | 4282 | case KEY_open: |
93a17b20 | 4283 | s = skipspace(s); |
834a4ddd | 4284 | if (isIDFIRST_lazy(s)) { |
93a17b20 | 4285 | char *t; |
834a4ddd | 4286 | for (d = s; isALNUM_lazy(d); d++) ; |
93a17b20 | 4287 | t = skipspace(d); |
0453d815 PM |
4288 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_AMBIGUOUS)) |
4289 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
4290 | "Precedence problem: open %.*s should be open(%.*s)", | |
4291 | d-s,s, d-s,s); | |
93a17b20 | 4292 | } |
a0d0e21e | 4293 | LOP(OP_OPEN,XTERM); |
79072805 | 4294 | |
463ee0b2 | 4295 | case KEY_or: |
a0d0e21e | 4296 | yylval.ival = OP_OR; |
463ee0b2 LW |
4297 | OPERATOR(OROP); |
4298 | ||
79072805 LW |
4299 | case KEY_ord: |
4300 | UNI(OP_ORD); | |
4301 | ||
4302 | case KEY_oct: | |
4303 | UNI(OP_OCT); | |
4304 | ||
4305 | case KEY_opendir: | |
a0d0e21e | 4306 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4307 | |
4308 | case KEY_print: | |
3280af22 | 4309 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4310 | LOP(OP_PRINT,XREF); |
79072805 LW |
4311 | |
4312 | case KEY_printf: | |
3280af22 | 4313 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4314 | LOP(OP_PRTF,XREF); |
79072805 | 4315 | |
c07a80fd | 4316 | case KEY_prototype: |
4317 | UNI(OP_PROTOTYPE); | |
4318 | ||
79072805 | 4319 | case KEY_push: |
a0d0e21e | 4320 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4321 | |
4322 | case KEY_pop: | |
4323 | UNI(OP_POP); | |
4324 | ||
a0d0e21e LW |
4325 | case KEY_pos: |
4326 | UNI(OP_POS); | |
4327 | ||
79072805 | 4328 | case KEY_pack: |
a0d0e21e | 4329 | LOP(OP_PACK,XTERM); |
79072805 LW |
4330 | |
4331 | case KEY_package: | |
a0d0e21e | 4332 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4333 | OPERATOR(PACKAGE); |
4334 | ||
4335 | case KEY_pipe: | |
a0d0e21e | 4336 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4337 | |
4338 | case KEY_q: | |
09bef843 | 4339 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4340 | if (!s) |
85e6fe83 | 4341 | missingterm((char*)0); |
79072805 LW |
4342 | yylval.ival = OP_CONST; |
4343 | TERM(sublex_start()); | |
4344 | ||
a0d0e21e LW |
4345 | case KEY_quotemeta: |
4346 | UNI(OP_QUOTEMETA); | |
4347 | ||
8990e307 | 4348 | case KEY_qw: |
09bef843 | 4349 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4350 | if (!s) |
85e6fe83 | 4351 | missingterm((char*)0); |
8127e0e3 GS |
4352 | force_next(')'); |
4353 | if (SvCUR(PL_lex_stuff)) { | |
4354 | OP *words = Nullop; | |
4355 | int warned = 0; | |
3280af22 | 4356 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4357 | while (len) { |
4358 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4359 | if (len) { | |
4360 | char *b = d; | |
4361 | if (!warned && ckWARN(WARN_SYNTAX)) { | |
4362 | for (; !isSPACE(*d) && len; --len, ++d) { | |
4363 | if (*d == ',') { | |
cea2e8a9 | 4364 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4365 | "Possible attempt to separate words with commas"); |
4366 | ++warned; | |
4367 | } | |
4368 | else if (*d == '#') { | |
cea2e8a9 | 4369 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4370 | "Possible attempt to put comments in qw() list"); |
4371 | ++warned; | |
4372 | } | |
4373 | } | |
4374 | } | |
4375 | else { | |
4376 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4377 | } | |
4378 | words = append_elem(OP_LIST, words, | |
4379 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4380 | } |
4381 | } | |
8127e0e3 GS |
4382 | if (words) { |
4383 | PL_nextval[PL_nexttoke].opval = words; | |
4384 | force_next(THING); | |
4385 | } | |
55497cff | 4386 | } |
8127e0e3 GS |
4387 | if (PL_lex_stuff) |
4388 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4389 | PL_lex_stuff = Nullsv; |
3280af22 | 4390 | PL_expect = XTERM; |
8127e0e3 | 4391 | TOKEN('('); |
8990e307 | 4392 | |
79072805 | 4393 | case KEY_qq: |
09bef843 | 4394 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4395 | if (!s) |
85e6fe83 | 4396 | missingterm((char*)0); |
a0d0e21e | 4397 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4398 | if (SvIVX(PL_lex_stuff) == '\'') |
4399 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4400 | TERM(sublex_start()); |
4401 | ||
8782bef2 GB |
4402 | case KEY_qr: |
4403 | s = scan_pat(s,OP_QR); | |
4404 | TERM(sublex_start()); | |
4405 | ||
79072805 | 4406 | case KEY_qx: |
09bef843 | 4407 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4408 | if (!s) |
85e6fe83 | 4409 | missingterm((char*)0); |
79072805 LW |
4410 | yylval.ival = OP_BACKTICK; |
4411 | set_csh(); | |
4412 | TERM(sublex_start()); | |
4413 | ||
4414 | case KEY_return: | |
4415 | OLDLOP(OP_RETURN); | |
4416 | ||
4417 | case KEY_require: | |
a7cb1f99 GS |
4418 | s = skipspace(s); |
4419 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { | |
4420 | s = force_version(s); | |
4421 | } | |
4422 | else { | |
4423 | *PL_tokenbuf = '\0'; | |
4424 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
4425 | if (isIDFIRST_lazy(PL_tokenbuf)) | |
4426 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); | |
4427 | else if (*s == '<') | |
4428 | yyerror("<> should be quotes"); | |
4429 | } | |
463ee0b2 | 4430 | UNI(OP_REQUIRE); |
79072805 LW |
4431 | |
4432 | case KEY_reset: | |
4433 | UNI(OP_RESET); | |
4434 | ||
4435 | case KEY_redo: | |
a0d0e21e | 4436 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4437 | LOOPX(OP_REDO); |
4438 | ||
4439 | case KEY_rename: | |
a0d0e21e | 4440 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4441 | |
4442 | case KEY_rand: | |
4443 | UNI(OP_RAND); | |
4444 | ||
4445 | case KEY_rmdir: | |
4446 | UNI(OP_RMDIR); | |
4447 | ||
4448 | case KEY_rindex: | |
a0d0e21e | 4449 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4450 | |
4451 | case KEY_read: | |
a0d0e21e | 4452 | LOP(OP_READ,XTERM); |
79072805 LW |
4453 | |
4454 | case KEY_readdir: | |
4455 | UNI(OP_READDIR); | |
4456 | ||
93a17b20 LW |
4457 | case KEY_readline: |
4458 | set_csh(); | |
4459 | UNI(OP_READLINE); | |
4460 | ||
4461 | case KEY_readpipe: | |
4462 | set_csh(); | |
4463 | UNI(OP_BACKTICK); | |
4464 | ||
79072805 LW |
4465 | case KEY_rewinddir: |
4466 | UNI(OP_REWINDDIR); | |
4467 | ||
4468 | case KEY_recv: | |
a0d0e21e | 4469 | LOP(OP_RECV,XTERM); |
79072805 LW |
4470 | |
4471 | case KEY_reverse: | |
a0d0e21e | 4472 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4473 | |
4474 | case KEY_readlink: | |
4475 | UNI(OP_READLINK); | |
4476 | ||
4477 | case KEY_ref: | |
4478 | UNI(OP_REF); | |
4479 | ||
4480 | case KEY_s: | |
4481 | s = scan_subst(s); | |
4482 | if (yylval.opval) | |
4483 | TERM(sublex_start()); | |
4484 | else | |
4485 | TOKEN(1); /* force error */ | |
4486 | ||
a0d0e21e LW |
4487 | case KEY_chomp: |
4488 | UNI(OP_CHOMP); | |
4489 | ||
79072805 LW |
4490 | case KEY_scalar: |
4491 | UNI(OP_SCALAR); | |
4492 | ||
4493 | case KEY_select: | |
a0d0e21e | 4494 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4495 | |
4496 | case KEY_seek: | |
a0d0e21e | 4497 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4498 | |
4499 | case KEY_semctl: | |
a0d0e21e | 4500 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4501 | |
4502 | case KEY_semget: | |
a0d0e21e | 4503 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4504 | |
4505 | case KEY_semop: | |
a0d0e21e | 4506 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4507 | |
4508 | case KEY_send: | |
a0d0e21e | 4509 | LOP(OP_SEND,XTERM); |
79072805 LW |
4510 | |
4511 | case KEY_setpgrp: | |
a0d0e21e | 4512 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4513 | |
4514 | case KEY_setpriority: | |
a0d0e21e | 4515 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4516 | |
4517 | case KEY_sethostent: | |
ff68c719 | 4518 | UNI(OP_SHOSTENT); |
79072805 LW |
4519 | |
4520 | case KEY_setnetent: | |
ff68c719 | 4521 | UNI(OP_SNETENT); |
79072805 LW |
4522 | |
4523 | case KEY_setservent: | |
ff68c719 | 4524 | UNI(OP_SSERVENT); |
79072805 LW |
4525 | |
4526 | case KEY_setprotoent: | |
ff68c719 | 4527 | UNI(OP_SPROTOENT); |
79072805 LW |
4528 | |
4529 | case KEY_setpwent: | |
4530 | FUN0(OP_SPWENT); | |
4531 | ||
4532 | case KEY_setgrent: | |
4533 | FUN0(OP_SGRENT); | |
4534 | ||
4535 | case KEY_seekdir: | |
a0d0e21e | 4536 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4537 | |
4538 | case KEY_setsockopt: | |
a0d0e21e | 4539 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4540 | |
4541 | case KEY_shift: | |
4542 | UNI(OP_SHIFT); | |
4543 | ||
4544 | case KEY_shmctl: | |
a0d0e21e | 4545 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4546 | |
4547 | case KEY_shmget: | |
a0d0e21e | 4548 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4549 | |
4550 | case KEY_shmread: | |
a0d0e21e | 4551 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4552 | |
4553 | case KEY_shmwrite: | |
a0d0e21e | 4554 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4555 | |
4556 | case KEY_shutdown: | |
a0d0e21e | 4557 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4558 | |
4559 | case KEY_sin: | |
4560 | UNI(OP_SIN); | |
4561 | ||
4562 | case KEY_sleep: | |
4563 | UNI(OP_SLEEP); | |
4564 | ||
4565 | case KEY_socket: | |
a0d0e21e | 4566 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4567 | |
4568 | case KEY_socketpair: | |
a0d0e21e | 4569 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4570 | |
4571 | case KEY_sort: | |
3280af22 | 4572 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4573 | s = skipspace(s); |
4574 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4575 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4576 | PL_expect = XTERM; |
15f0808c | 4577 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4578 | LOP(OP_SORT,XREF); |
79072805 LW |
4579 | |
4580 | case KEY_split: | |
a0d0e21e | 4581 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4582 | |
4583 | case KEY_sprintf: | |
a0d0e21e | 4584 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4585 | |
4586 | case KEY_splice: | |
a0d0e21e | 4587 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4588 | |
4589 | case KEY_sqrt: | |
4590 | UNI(OP_SQRT); | |
4591 | ||
4592 | case KEY_srand: | |
4593 | UNI(OP_SRAND); | |
4594 | ||
4595 | case KEY_stat: | |
4596 | UNI(OP_STAT); | |
4597 | ||
4598 | case KEY_study: | |
79072805 LW |
4599 | UNI(OP_STUDY); |
4600 | ||
4601 | case KEY_substr: | |
a0d0e21e | 4602 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4603 | |
4604 | case KEY_format: | |
4605 | case KEY_sub: | |
93a17b20 | 4606 | really_sub: |
09bef843 | 4607 | { |
3280af22 | 4608 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4609 | SSize_t tboffset; |
09bef843 SB |
4610 | expectation attrful; |
4611 | bool have_name, have_proto; | |
4612 | int key = tmp; | |
4613 | ||
4614 | s = skipspace(s); | |
4615 | ||
4616 | if (isIDFIRST_lazy(s) || *s == '\'' || | |
4617 | (*s == ':' && s[1] == ':')) | |
4618 | { | |
4619 | PL_expect = XBLOCK; | |
4620 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4621 | /* remember buffer pos'n for later force_word */ |
4622 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4623 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4624 | if (strchr(tmpbuf, ':')) | |
4625 | sv_setpv(PL_subname, tmpbuf); | |
4626 | else { | |
4627 | sv_setsv(PL_subname,PL_curstname); | |
4628 | sv_catpvn(PL_subname,"::",2); | |
4629 | sv_catpvn(PL_subname,tmpbuf,len); | |
4630 | } | |
4631 | s = skipspace(d); | |
4632 | have_name = TRUE; | |
4633 | } | |
463ee0b2 | 4634 | else { |
09bef843 SB |
4635 | if (key == KEY_my) |
4636 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4637 | PL_expect = XTERMBLOCK; | |
4638 | attrful = XATTRTERM; | |
4639 | sv_setpv(PL_subname,"?"); | |
4640 | have_name = FALSE; | |
463ee0b2 | 4641 | } |
4633a7c4 | 4642 | |
09bef843 SB |
4643 | if (key == KEY_format) { |
4644 | if (*s == '=') | |
4645 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4646 | if (have_name) | |
b1b65b59 JH |
4647 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4648 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4649 | OPERATOR(FORMAT); |
4650 | } | |
79072805 | 4651 | |
09bef843 SB |
4652 | /* Look for a prototype */ |
4653 | if (*s == '(') { | |
4654 | char *p; | |
4655 | ||
4656 | s = scan_str(s,FALSE,FALSE); | |
4657 | if (!s) { | |
4658 | if (PL_lex_stuff) | |
4659 | SvREFCNT_dec(PL_lex_stuff); | |
4660 | PL_lex_stuff = Nullsv; | |
4661 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4662 | } | |
4663 | /* strip spaces */ | |
4664 | d = SvPVX(PL_lex_stuff); | |
4665 | tmp = 0; | |
4666 | for (p = d; *p; ++p) { | |
4667 | if (!isSPACE(*p)) | |
4668 | d[tmp++] = *p; | |
4669 | } | |
4670 | d[tmp] = '\0'; | |
4671 | SvCUR(PL_lex_stuff) = tmp; | |
4672 | have_proto = TRUE; | |
68dc0745 | 4673 | |
09bef843 | 4674 | s = skipspace(s); |
4633a7c4 | 4675 | } |
09bef843 SB |
4676 | else |
4677 | have_proto = FALSE; | |
4678 | ||
4679 | if (*s == ':' && s[1] != ':') | |
4680 | PL_expect = attrful; | |
4681 | ||
4682 | if (have_proto) { | |
b1b65b59 JH |
4683 | PL_nextval[PL_nexttoke].opval = |
4684 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4685 | PL_lex_stuff = Nullsv; |
4686 | force_next(THING); | |
68dc0745 | 4687 | } |
09bef843 SB |
4688 | if (!have_name) { |
4689 | sv_setpv(PL_subname,"__ANON__"); | |
4690 | TOKEN(ANONSUB); | |
4633a7c4 | 4691 | } |
b1b65b59 JH |
4692 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4693 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4694 | if (key == KEY_my) |
4695 | TOKEN(MYSUB); | |
4696 | TOKEN(SUB); | |
4633a7c4 | 4697 | } |
79072805 LW |
4698 | |
4699 | case KEY_system: | |
4700 | set_csh(); | |
a0d0e21e | 4701 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4702 | |
4703 | case KEY_symlink: | |
a0d0e21e | 4704 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4705 | |
4706 | case KEY_syscall: | |
a0d0e21e | 4707 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4708 | |
c07a80fd | 4709 | case KEY_sysopen: |
4710 | LOP(OP_SYSOPEN,XTERM); | |
4711 | ||
137443ea | 4712 | case KEY_sysseek: |
4713 | LOP(OP_SYSSEEK,XTERM); | |
4714 | ||
79072805 | 4715 | case KEY_sysread: |
a0d0e21e | 4716 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4717 | |
4718 | case KEY_syswrite: | |
a0d0e21e | 4719 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4720 | |
4721 | case KEY_tr: | |
4722 | s = scan_trans(s); | |
4723 | TERM(sublex_start()); | |
4724 | ||
4725 | case KEY_tell: | |
4726 | UNI(OP_TELL); | |
4727 | ||
4728 | case KEY_telldir: | |
4729 | UNI(OP_TELLDIR); | |
4730 | ||
463ee0b2 | 4731 | case KEY_tie: |
a0d0e21e | 4732 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4733 | |
c07a80fd | 4734 | case KEY_tied: |
4735 | UNI(OP_TIED); | |
4736 | ||
79072805 LW |
4737 | case KEY_time: |
4738 | FUN0(OP_TIME); | |
4739 | ||
4740 | case KEY_times: | |
4741 | FUN0(OP_TMS); | |
4742 | ||
4743 | case KEY_truncate: | |
a0d0e21e | 4744 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4745 | |
4746 | case KEY_uc: | |
4747 | UNI(OP_UC); | |
4748 | ||
4749 | case KEY_ucfirst: | |
4750 | UNI(OP_UCFIRST); | |
4751 | ||
463ee0b2 LW |
4752 | case KEY_untie: |
4753 | UNI(OP_UNTIE); | |
4754 | ||
79072805 | 4755 | case KEY_until: |
57843af0 | 4756 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4757 | OPERATOR(UNTIL); |
4758 | ||
4759 | case KEY_unless: | |
57843af0 | 4760 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4761 | OPERATOR(UNLESS); |
4762 | ||
4763 | case KEY_unlink: | |
a0d0e21e | 4764 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4765 | |
4766 | case KEY_undef: | |
4767 | UNI(OP_UNDEF); | |
4768 | ||
4769 | case KEY_unpack: | |
a0d0e21e | 4770 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4771 | |
4772 | case KEY_utime: | |
a0d0e21e | 4773 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4774 | |
4775 | case KEY_umask: | |
599cee73 | 4776 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4777 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 JH |
4778 | if (*d != '0' && isDIGIT(*d)) |
4779 | Perl_warner(aTHX_ WARN_OCTAL, | |
4780 | "umask: argument is missing initial 0"); | |
748a9306 | 4781 | } |
79072805 LW |
4782 | UNI(OP_UMASK); |
4783 | ||
4784 | case KEY_unshift: | |
a0d0e21e LW |
4785 | LOP(OP_UNSHIFT,XTERM); |
4786 | ||
4787 | case KEY_use: | |
3280af22 | 4788 | if (PL_expect != XSTATE) |
a0d0e21e | 4789 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4790 | s = skipspace(s); |
a7cb1f99 | 4791 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
89bfa8cd | 4792 | s = force_version(s); |
a7cb1f99 | 4793 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 4794 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4795 | force_next(WORD); |
4796 | } | |
4797 | } | |
4798 | else { | |
4799 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4800 | s = force_version(s); | |
4801 | } | |
a0d0e21e LW |
4802 | yylval.ival = 1; |
4803 | OPERATOR(USE); | |
79072805 LW |
4804 | |
4805 | case KEY_values: | |
4806 | UNI(OP_VALUES); | |
4807 | ||
4808 | case KEY_vec: | |
a0d0e21e | 4809 | LOP(OP_VEC,XTERM); |
79072805 LW |
4810 | |
4811 | case KEY_while: | |
57843af0 | 4812 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4813 | OPERATOR(WHILE); |
4814 | ||
4815 | case KEY_warn: | |
3280af22 | 4816 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4817 | LOP(OP_WARN,XTERM); |
79072805 LW |
4818 | |
4819 | case KEY_wait: | |
4820 | FUN0(OP_WAIT); | |
4821 | ||
4822 | case KEY_waitpid: | |
a0d0e21e | 4823 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4824 | |
4825 | case KEY_wantarray: | |
4826 | FUN0(OP_WANTARRAY); | |
4827 | ||
4828 | case KEY_write: | |
9d116dd7 JH |
4829 | #ifdef EBCDIC |
4830 | { | |
4831 | static char ctl_l[2]; | |
4832 | ||
4833 | if (ctl_l[0] == '\0') | |
4834 | ctl_l[0] = toCTRL('L'); | |
4835 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4836 | } | |
4837 | #else | |
4838 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4839 | #endif | |
79072805 LW |
4840 | UNI(OP_ENTERWRITE); |
4841 | ||
4842 | case KEY_x: | |
3280af22 | 4843 | if (PL_expect == XOPERATOR) |
79072805 LW |
4844 | Mop(OP_REPEAT); |
4845 | check_uni(); | |
4846 | goto just_a_word; | |
4847 | ||
a0d0e21e LW |
4848 | case KEY_xor: |
4849 | yylval.ival = OP_XOR; | |
4850 | OPERATOR(OROP); | |
4851 | ||
79072805 LW |
4852 | case KEY_y: |
4853 | s = scan_trans(s); | |
4854 | TERM(sublex_start()); | |
4855 | } | |
49dc05e3 | 4856 | }} |
79072805 LW |
4857 | } |
4858 | ||
4859 | I32 | |
864dbfa3 | 4860 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4861 | { |
4862 | switch (*d) { | |
4863 | case '_': | |
4864 | if (d[1] == '_') { | |
a0d0e21e | 4865 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4866 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4867 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4868 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4869 | if (strEQ(d,"__END__")) return KEY___END__; |
4870 | } | |
4871 | break; | |
8990e307 LW |
4872 | case 'A': |
4873 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4874 | break; | |
79072805 | 4875 | case 'a': |
463ee0b2 LW |
4876 | switch (len) { |
4877 | case 3: | |
a0d0e21e LW |
4878 | if (strEQ(d,"and")) return -KEY_and; |
4879 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4880 | break; |
463ee0b2 | 4881 | case 5: |
a0d0e21e LW |
4882 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4883 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4884 | break; |
4885 | case 6: | |
a0d0e21e | 4886 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4887 | break; |
4888 | } | |
79072805 LW |
4889 | break; |
4890 | case 'B': | |
4891 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4892 | break; |
79072805 | 4893 | case 'b': |
a0d0e21e LW |
4894 | if (strEQ(d,"bless")) return -KEY_bless; |
4895 | if (strEQ(d,"bind")) return -KEY_bind; | |
4896 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4897 | break; | |
4898 | case 'C': | |
4899 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4900 | break; |
4901 | case 'c': | |
4902 | switch (len) { | |
4903 | case 3: | |
a0d0e21e LW |
4904 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4905 | if (strEQ(d,"chr")) return -KEY_chr; | |
4906 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4907 | break; |
4908 | case 4: | |
4909 | if (strEQ(d,"chop")) return KEY_chop; | |
4910 | break; | |
4911 | case 5: | |
a0d0e21e LW |
4912 | if (strEQ(d,"close")) return -KEY_close; |
4913 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4914 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4915 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4916 | if (strEQ(d,"chown")) return -KEY_chown; | |
4917 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4918 | break; |
4919 | case 6: | |
a0d0e21e LW |
4920 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4921 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4922 | break; |
4923 | case 7: | |
a0d0e21e | 4924 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4925 | break; |
4926 | case 8: | |
a0d0e21e LW |
4927 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4928 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4929 | break; |
4930 | } | |
4931 | break; | |
ed6116ce LW |
4932 | case 'D': |
4933 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4934 | break; | |
79072805 LW |
4935 | case 'd': |
4936 | switch (len) { | |
4937 | case 2: | |
4938 | if (strEQ(d,"do")) return KEY_do; | |
4939 | break; | |
4940 | case 3: | |
a0d0e21e | 4941 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4942 | break; |
4943 | case 4: | |
a0d0e21e | 4944 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4945 | break; |
4946 | case 6: | |
4947 | if (strEQ(d,"delete")) return KEY_delete; | |
4948 | break; | |
4949 | case 7: | |
4950 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4951 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4952 | break; |
4953 | case 8: | |
a0d0e21e | 4954 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4955 | break; |
4956 | } | |
4957 | break; | |
4958 | case 'E': | |
a0d0e21e | 4959 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4960 | if (strEQ(d,"END")) return KEY_END; |
4961 | break; | |
4962 | case 'e': | |
4963 | switch (len) { | |
4964 | case 2: | |
a0d0e21e | 4965 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4966 | break; |
4967 | case 3: | |
a0d0e21e LW |
4968 | if (strEQ(d,"eof")) return -KEY_eof; |
4969 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4970 | break; |
4971 | case 4: | |
4972 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4973 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4974 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4975 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4976 | if (strEQ(d,"each")) return KEY_each; |
4977 | break; | |
4978 | case 5: | |
4979 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4980 | break; | |
a0d0e21e LW |
4981 | case 6: |
4982 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 4983 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 4984 | break; |
79072805 | 4985 | case 8: |
a0d0e21e LW |
4986 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4987 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4988 | break; |
4989 | case 9: | |
a0d0e21e | 4990 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4991 | break; |
4992 | case 10: | |
a0d0e21e LW |
4993 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4994 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4995 | break; |
4996 | case 11: | |
a0d0e21e | 4997 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4998 | break; |
a687059c | 4999 | } |
a687059c | 5000 | break; |
79072805 LW |
5001 | case 'f': |
5002 | switch (len) { | |
5003 | case 3: | |
5004 | if (strEQ(d,"for")) return KEY_for; | |
5005 | break; | |
5006 | case 4: | |
a0d0e21e | 5007 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5008 | break; |
5009 | case 5: | |
a0d0e21e LW |
5010 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5011 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5012 | break; |
5013 | case 6: | |
5014 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5015 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5016 | break; |
5017 | case 7: | |
5018 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5019 | break; | |
5020 | case 8: | |
a0d0e21e | 5021 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5022 | break; |
378cc40b | 5023 | } |
a687059c | 5024 | break; |
79072805 LW |
5025 | case 'G': |
5026 | if (len == 2) { | |
a0d0e21e LW |
5027 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
5028 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 5029 | } |
a687059c | 5030 | break; |
79072805 | 5031 | case 'g': |
a687059c LW |
5032 | if (strnEQ(d,"get",3)) { |
5033 | d += 3; | |
5034 | if (*d == 'p') { | |
79072805 LW |
5035 | switch (len) { |
5036 | case 7: | |
a0d0e21e LW |
5037 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5038 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5039 | break; |
5040 | case 8: | |
a0d0e21e LW |
5041 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5042 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5043 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5044 | break; |
5045 | case 11: | |
a0d0e21e LW |
5046 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5047 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5048 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5049 | break; |
5050 | case 14: | |
a0d0e21e | 5051 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5052 | break; |
5053 | case 16: | |
a0d0e21e | 5054 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5055 | break; |
5056 | } | |
a687059c LW |
5057 | } |
5058 | else if (*d == 'h') { | |
a0d0e21e LW |
5059 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5060 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5061 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5062 | } |
5063 | else if (*d == 'n') { | |
a0d0e21e LW |
5064 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5065 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5066 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5067 | } |
5068 | else if (*d == 's') { | |
a0d0e21e LW |
5069 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5070 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5071 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5072 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5073 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5074 | } |
5075 | else if (*d == 'g') { | |
a0d0e21e LW |
5076 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5077 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5078 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5079 | } |
5080 | else if (*d == 'l') { | |
a0d0e21e | 5081 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5082 | } |
a0d0e21e | 5083 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5084 | break; |
a687059c | 5085 | } |
79072805 LW |
5086 | switch (len) { |
5087 | case 2: | |
a0d0e21e LW |
5088 | if (strEQ(d,"gt")) return -KEY_gt; |
5089 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5090 | break; |
5091 | case 4: | |
5092 | if (strEQ(d,"grep")) return KEY_grep; | |
5093 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5094 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5095 | break; |
5096 | case 6: | |
a0d0e21e | 5097 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5098 | break; |
378cc40b | 5099 | } |
a687059c | 5100 | break; |
79072805 | 5101 | case 'h': |
a0d0e21e | 5102 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5103 | break; |
7d07dbc2 MB |
5104 | case 'I': |
5105 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5106 | break; | |
79072805 LW |
5107 | case 'i': |
5108 | switch (len) { | |
5109 | case 2: | |
5110 | if (strEQ(d,"if")) return KEY_if; | |
5111 | break; | |
5112 | case 3: | |
a0d0e21e | 5113 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5114 | break; |
5115 | case 5: | |
a0d0e21e LW |
5116 | if (strEQ(d,"index")) return -KEY_index; |
5117 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5118 | break; |
5119 | } | |
a687059c | 5120 | break; |
79072805 | 5121 | case 'j': |
a0d0e21e | 5122 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5123 | break; |
79072805 LW |
5124 | case 'k': |
5125 | if (len == 4) { | |
5126 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5127 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5128 | } |
79072805 LW |
5129 | break; |
5130 | case 'L': | |
5131 | if (len == 2) { | |
a0d0e21e LW |
5132 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5133 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5134 | } |
79072805 LW |
5135 | break; |
5136 | case 'l': | |
5137 | switch (len) { | |
5138 | case 2: | |
a0d0e21e LW |
5139 | if (strEQ(d,"lt")) return -KEY_lt; |
5140 | if (strEQ(d,"le")) return -KEY_le; | |
5141 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5142 | break; |
5143 | case 3: | |
a0d0e21e | 5144 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5145 | break; |
5146 | case 4: | |
5147 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5148 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5149 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5150 | break; |
79072805 LW |
5151 | case 5: |
5152 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5153 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5154 | break; |
5155 | case 6: | |
a0d0e21e LW |
5156 | if (strEQ(d,"length")) return -KEY_length; |
5157 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5158 | break; |
5159 | case 7: | |
a0d0e21e | 5160 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5161 | break; |
5162 | case 9: | |
a0d0e21e | 5163 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5164 | break; |
5165 | } | |
a687059c | 5166 | break; |
79072805 LW |
5167 | case 'm': |
5168 | switch (len) { | |
5169 | case 1: return KEY_m; | |
93a17b20 LW |
5170 | case 2: |
5171 | if (strEQ(d,"my")) return KEY_my; | |
5172 | break; | |
a0d0e21e LW |
5173 | case 3: |
5174 | if (strEQ(d,"map")) return KEY_map; | |
5175 | break; | |
79072805 | 5176 | case 5: |
a0d0e21e | 5177 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5178 | break; |
5179 | case 6: | |
a0d0e21e LW |
5180 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5181 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5182 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5183 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5184 | break; |
5185 | } | |
a687059c | 5186 | break; |
79072805 | 5187 | case 'N': |
a0d0e21e | 5188 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5189 | break; |
79072805 LW |
5190 | case 'n': |
5191 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5192 | if (strEQ(d,"ne")) return -KEY_ne; |
5193 | if (strEQ(d,"not")) return -KEY_not; | |
5194 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5195 | break; |
79072805 LW |
5196 | case 'o': |
5197 | switch (len) { | |
463ee0b2 | 5198 | case 2: |
a0d0e21e | 5199 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5200 | break; |
79072805 | 5201 | case 3: |
a0d0e21e LW |
5202 | if (strEQ(d,"ord")) return -KEY_ord; |
5203 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5204 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5205 | break; |
5206 | case 4: | |
a0d0e21e | 5207 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5208 | break; |
5209 | case 7: | |
a0d0e21e | 5210 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5211 | break; |
fe14fcc3 | 5212 | } |
a687059c | 5213 | break; |
79072805 LW |
5214 | case 'p': |
5215 | switch (len) { | |
5216 | case 3: | |
5217 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5218 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5219 | break; |
5220 | case 4: | |
5221 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5222 | if (strEQ(d,"pack")) return -KEY_pack; |
5223 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5224 | break; |
5225 | case 5: | |
5226 | if (strEQ(d,"print")) return KEY_print; | |
5227 | break; | |
5228 | case 6: | |
5229 | if (strEQ(d,"printf")) return KEY_printf; | |
5230 | break; | |
5231 | case 7: | |
5232 | if (strEQ(d,"package")) return KEY_package; | |
5233 | break; | |
c07a80fd | 5234 | case 9: |
5235 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5236 | } |
79072805 LW |
5237 | break; |
5238 | case 'q': | |
5239 | if (len <= 2) { | |
5240 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5241 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5242 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5243 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5244 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5245 | } |
a0d0e21e | 5246 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5247 | break; |
5248 | case 'r': | |
5249 | switch (len) { | |
5250 | case 3: | |
a0d0e21e | 5251 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5252 | break; |
5253 | case 4: | |
a0d0e21e LW |
5254 | if (strEQ(d,"read")) return -KEY_read; |
5255 | if (strEQ(d,"rand")) return -KEY_rand; | |
5256 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5257 | if (strEQ(d,"redo")) return KEY_redo; |
5258 | break; | |
5259 | case 5: | |
a0d0e21e LW |
5260 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5261 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5262 | break; |
5263 | case 6: | |
5264 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5265 | if (strEQ(d,"rename")) return -KEY_rename; |
5266 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5267 | break; |
5268 | case 7: | |
a0d0e21e LW |
5269 | if (strEQ(d,"require")) return -KEY_require; |
5270 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5271 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5272 | break; |
5273 | case 8: | |
a0d0e21e LW |
5274 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5275 | if (strEQ(d,"readline")) return -KEY_readline; | |
5276 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5277 | break; |
5278 | case 9: | |
a0d0e21e | 5279 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5280 | break; |
a687059c | 5281 | } |
79072805 | 5282 | break; |
4f25aa18 GS |
5283 | case 'S': |
5284 | if (strEQ(d,"STOP")) return KEY_STOP; | |
5285 | break; | |
79072805 | 5286 | case 's': |
a687059c | 5287 | switch (d[1]) { |
79072805 | 5288 | case 0: return KEY_s; |
a687059c | 5289 | case 'c': |
79072805 | 5290 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5291 | break; |
5292 | case 'e': | |
79072805 LW |
5293 | switch (len) { |
5294 | case 4: | |
a0d0e21e LW |
5295 | if (strEQ(d,"seek")) return -KEY_seek; |
5296 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5297 | break; |
5298 | case 5: | |
a0d0e21e | 5299 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5300 | break; |
5301 | case 6: | |
a0d0e21e LW |
5302 | if (strEQ(d,"select")) return -KEY_select; |
5303 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5304 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5305 | break; |
5306 | case 7: | |
a0d0e21e LW |
5307 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5308 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5309 | break; |
5310 | case 8: | |
a0d0e21e LW |
5311 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5312 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5313 | break; |
5314 | case 9: | |
a0d0e21e | 5315 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5316 | break; |
5317 | case 10: | |
a0d0e21e LW |
5318 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5319 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5320 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5321 | break; |
5322 | case 11: | |
a0d0e21e LW |
5323 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5324 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5325 | break; |
5326 | } | |
a687059c LW |
5327 | break; |
5328 | case 'h': | |
79072805 LW |
5329 | switch (len) { |
5330 | case 5: | |
5331 | if (strEQ(d,"shift")) return KEY_shift; | |
5332 | break; | |
5333 | case 6: | |
a0d0e21e LW |
5334 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5335 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5336 | break; |
5337 | case 7: | |
a0d0e21e | 5338 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5339 | break; |
5340 | case 8: | |
a0d0e21e LW |
5341 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5342 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5343 | break; |
5344 | } | |
a687059c LW |
5345 | break; |
5346 | case 'i': | |
a0d0e21e | 5347 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5348 | break; |
5349 | case 'l': | |
a0d0e21e | 5350 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5351 | break; |
5352 | case 'o': | |
79072805 | 5353 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5354 | if (strEQ(d,"socket")) return -KEY_socket; |
5355 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5356 | break; |
5357 | case 'p': | |
79072805 | 5358 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5359 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5360 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5361 | break; |
5362 | case 'q': | |
a0d0e21e | 5363 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5364 | break; |
5365 | case 'r': | |
a0d0e21e | 5366 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5367 | break; |
5368 | case 't': | |
a0d0e21e | 5369 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5370 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5371 | break; |
5372 | case 'u': | |
a0d0e21e | 5373 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5374 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5375 | break; |
5376 | case 'y': | |
79072805 LW |
5377 | switch (len) { |
5378 | case 6: | |
a0d0e21e | 5379 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5380 | break; |
5381 | case 7: | |
a0d0e21e LW |
5382 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5383 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5384 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5385 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5386 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5387 | break; |
5388 | case 8: | |
a0d0e21e | 5389 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5390 | break; |
a687059c | 5391 | } |
a687059c LW |
5392 | break; |
5393 | } | |
5394 | break; | |
79072805 LW |
5395 | case 't': |
5396 | switch (len) { | |
5397 | case 2: | |
5398 | if (strEQ(d,"tr")) return KEY_tr; | |
5399 | break; | |
463ee0b2 LW |
5400 | case 3: |
5401 | if (strEQ(d,"tie")) return KEY_tie; | |
5402 | break; | |
79072805 | 5403 | case 4: |
a0d0e21e | 5404 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5405 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5406 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5407 | break; |
5408 | case 5: | |
a0d0e21e | 5409 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5410 | break; |
5411 | case 7: | |
a0d0e21e | 5412 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5413 | break; |
5414 | case 8: | |
a0d0e21e | 5415 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5416 | break; |
378cc40b | 5417 | } |
a687059c | 5418 | break; |
79072805 LW |
5419 | case 'u': |
5420 | switch (len) { | |
5421 | case 2: | |
a0d0e21e LW |
5422 | if (strEQ(d,"uc")) return -KEY_uc; |
5423 | break; | |
5424 | case 3: | |
5425 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5426 | break; |
5427 | case 5: | |
5428 | if (strEQ(d,"undef")) return KEY_undef; | |
5429 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5430 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5431 | if (strEQ(d,"utime")) return -KEY_utime; |
5432 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5433 | break; |
5434 | case 6: | |
5435 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5436 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5437 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5438 | break; |
5439 | case 7: | |
5440 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5441 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5442 | break; |
a687059c LW |
5443 | } |
5444 | break; | |
79072805 | 5445 | case 'v': |
a0d0e21e LW |
5446 | if (strEQ(d,"values")) return -KEY_values; |
5447 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5448 | break; |
79072805 LW |
5449 | case 'w': |
5450 | switch (len) { | |
5451 | case 4: | |
a0d0e21e LW |
5452 | if (strEQ(d,"warn")) return -KEY_warn; |
5453 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5454 | break; |
5455 | case 5: | |
5456 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5457 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5458 | break; |
5459 | case 7: | |
a0d0e21e | 5460 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5461 | break; |
5462 | case 9: | |
a0d0e21e | 5463 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5464 | break; |
2f3197b3 | 5465 | } |
a687059c | 5466 | break; |
79072805 | 5467 | case 'x': |
a0d0e21e LW |
5468 | if (len == 1) return -KEY_x; |
5469 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5470 | break; |
79072805 LW |
5471 | case 'y': |
5472 | if (len == 1) return KEY_y; | |
5473 | break; | |
5474 | case 'z': | |
a687059c LW |
5475 | break; |
5476 | } | |
79072805 | 5477 | return 0; |
a687059c LW |
5478 | } |
5479 | ||
76e3520e | 5480 | STATIC void |
cea2e8a9 | 5481 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5482 | { |
2f3197b3 LW |
5483 | char *w; |
5484 | ||
d008e5eb GS |
5485 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5486 | dTHR; /* only for ckWARN */ | |
5487 | if (ckWARN(WARN_SYNTAX)) { | |
5488 | int level = 1; | |
5489 | for (w = s+2; *w && level; w++) { | |
5490 | if (*w == '(') | |
5491 | ++level; | |
5492 | else if (*w == ')') | |
5493 | --level; | |
5494 | } | |
5495 | if (*w) | |
5496 | for (; *w && isSPACE(*w); w++) ; | |
5497 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5498 | Perl_warner(aTHX_ WARN_SYNTAX, |
5499 | "%s (...) interpreted as function",name); | |
d008e5eb | 5500 | } |
2f3197b3 | 5501 | } |
3280af22 | 5502 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5503 | s++; |
a687059c LW |
5504 | if (*s == '(') |
5505 | s++; | |
3280af22 | 5506 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5507 | s++; |
834a4ddd | 5508 | if (isIDFIRST_lazy(s)) { |
2f3197b3 | 5509 | w = s++; |
834a4ddd | 5510 | while (isALNUM_lazy(s)) |
a687059c | 5511 | s++; |
3280af22 | 5512 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5513 | s++; |
e929a76b | 5514 | if (*s == ',') { |
463ee0b2 | 5515 | int kw; |
e929a76b | 5516 | *s = '\0'; |
864dbfa3 | 5517 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5518 | *s = ','; |
463ee0b2 | 5519 | if (kw) |
e929a76b | 5520 | return; |
cea2e8a9 | 5521 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5522 | } |
5523 | } | |
5524 | } | |
5525 | ||
423cee85 JH |
5526 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5527 | Best used as sv=new_constant(..., sv, ...). | |
5528 | If s, pv are NULL, calls subroutine with one argument, | |
5529 | and type is used with error messages only. */ | |
5530 | ||
b3ac6de7 | 5531 | STATIC SV * |
dff6d3cd GS |
5532 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
5533 | const char *type) | |
b3ac6de7 | 5534 | { |
b3ac6de7 | 5535 | dSP; |
3280af22 | 5536 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5537 | SV *res; |
b3ac6de7 IZ |
5538 | SV **cvp; |
5539 | SV *cv, *typesv; | |
dff6d3cd | 5540 | const char *why, *why1, *why2; |
423cee85 JH |
5541 | |
5542 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5543 | SV *msg; | |
5544 | ||
5545 | why = "%^H is not localized"; | |
5546 | report_short: | |
5547 | why1 = why2 = ""; | |
5548 | report: | |
5549 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5550 | (type ? type: "undef"), why1, why2, why); | |
5551 | yyerror(SvPVX(msg)); | |
5552 | SvREFCNT_dec(msg); | |
5553 | return sv; | |
5554 | } | |
b3ac6de7 | 5555 | if (!table) { |
423cee85 JH |
5556 | why = "%^H is not defined"; |
5557 | goto report_short; | |
b3ac6de7 IZ |
5558 | } |
5559 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5560 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5561 | why = "} is not defined"; |
5562 | why1 = "$^H{"; | |
5563 | why2 = key; | |
5564 | goto report; | |
b3ac6de7 IZ |
5565 | } |
5566 | sv_2mortal(sv); /* Parent created it permanently */ | |
5567 | cv = *cvp; | |
423cee85 JH |
5568 | if (!pv && s) |
5569 | pv = sv_2mortal(newSVpvn(s, len)); | |
5570 | if (type && pv) | |
5571 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5572 | else |
423cee85 JH |
5573 | typesv = &PL_sv_undef; |
5574 | ||
e788e7d3 | 5575 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5576 | ENTER ; |
5577 | SAVETMPS; | |
5578 | ||
5579 | PUSHMARK(SP) ; | |
25eaa213 | 5580 | EXTEND(sp, 4); |
423cee85 JH |
5581 | if (pv) |
5582 | PUSHs(pv); | |
b3ac6de7 | 5583 | PUSHs(sv); |
423cee85 JH |
5584 | if (pv) |
5585 | PUSHs(typesv); | |
b3ac6de7 IZ |
5586 | PUSHs(cv); |
5587 | PUTBACK; | |
423cee85 JH |
5588 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5589 | ||
5590 | SPAGAIN ; | |
5591 | ||
5592 | /* Check the eval first */ | |
5593 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5594 | { | |
5595 | STRLEN n_a; | |
5596 | sv_catpv(ERRSV, "Propagated"); | |
5597 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5598 | (void)POPs; |
423cee85 JH |
5599 | res = SvREFCNT_inc(sv); |
5600 | } | |
5601 | else { | |
5602 | res = POPs; | |
e1f15930 | 5603 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5604 | } |
5605 | ||
5606 | PUTBACK ; | |
5607 | FREETMPS ; | |
5608 | LEAVE ; | |
b3ac6de7 | 5609 | POPSTACK; |
423cee85 | 5610 | |
b3ac6de7 | 5611 | if (!SvOK(res)) { |
423cee85 JH |
5612 | why = "}} did not return a defined value"; |
5613 | why1 = "Call to &{$^H{"; | |
5614 | why2 = key; | |
5615 | sv = res; | |
5616 | goto report; | |
5617 | } | |
5618 | ||
5619 | return res; | |
b3ac6de7 | 5620 | } |
423cee85 | 5621 | |
76e3520e | 5622 | STATIC char * |
cea2e8a9 | 5623 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5624 | { |
5625 | register char *d = dest; | |
8903cb82 | 5626 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5627 | for (;;) { |
8903cb82 | 5628 | if (d >= e) |
cea2e8a9 | 5629 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5630 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5631 | *d++ = *s++; |
834a4ddd | 5632 | else if (*s == '\'' && allow_package && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5633 | *d++ = ':'; |
5634 | *d++ = ':'; | |
5635 | s++; | |
5636 | } | |
c3e0f903 | 5637 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5638 | *d++ = *s++; |
5639 | *d++ = *s++; | |
5640 | } | |
834a4ddd | 5641 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5642 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5643 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5644 | t += UTF8SKIP(t); |
5645 | if (d + (t - s) > e) | |
cea2e8a9 | 5646 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5647 | Copy(s, d, t - s, char); |
5648 | d += t - s; | |
5649 | s = t; | |
5650 | } | |
463ee0b2 LW |
5651 | else { |
5652 | *d = '\0'; | |
5653 | *slp = d - dest; | |
5654 | return s; | |
e929a76b | 5655 | } |
378cc40b LW |
5656 | } |
5657 | } | |
5658 | ||
76e3520e | 5659 | STATIC char * |
cea2e8a9 | 5660 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5661 | { |
5662 | register char *d; | |
8903cb82 | 5663 | register char *e; |
79072805 | 5664 | char *bracket = 0; |
748a9306 | 5665 | char funny = *s++; |
378cc40b | 5666 | |
a0d0e21e LW |
5667 | if (isSPACE(*s)) |
5668 | s = skipspace(s); | |
378cc40b | 5669 | d = dest; |
8903cb82 | 5670 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5671 | if (isDIGIT(*s)) { |
8903cb82 | 5672 | while (isDIGIT(*s)) { |
5673 | if (d >= e) | |
cea2e8a9 | 5674 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5675 | *d++ = *s++; |
8903cb82 | 5676 | } |
378cc40b LW |
5677 | } |
5678 | else { | |
463ee0b2 | 5679 | for (;;) { |
8903cb82 | 5680 | if (d >= e) |
cea2e8a9 | 5681 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5682 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5683 | *d++ = *s++; |
834a4ddd | 5684 | else if (*s == '\'' && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5685 | *d++ = ':'; |
5686 | *d++ = ':'; | |
5687 | s++; | |
5688 | } | |
a0d0e21e | 5689 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5690 | *d++ = *s++; |
5691 | *d++ = *s++; | |
5692 | } | |
834a4ddd | 5693 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5694 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5695 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5696 | t += UTF8SKIP(t); |
5697 | if (d + (t - s) > e) | |
cea2e8a9 | 5698 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5699 | Copy(s, d, t - s, char); |
5700 | d += t - s; | |
5701 | s = t; | |
5702 | } | |
463ee0b2 LW |
5703 | else |
5704 | break; | |
5705 | } | |
378cc40b LW |
5706 | } |
5707 | *d = '\0'; | |
5708 | d = dest; | |
79072805 | 5709 | if (*d) { |
3280af22 NIS |
5710 | if (PL_lex_state != LEX_NORMAL) |
5711 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5712 | return s; |
378cc40b | 5713 | } |
748a9306 | 5714 | if (*s == '$' && s[1] && |
834a4ddd | 5715 | (isALNUM_lazy(s+1) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5716 | { |
4810e5ec | 5717 | return s; |
5cd24f17 | 5718 | } |
79072805 LW |
5719 | if (*s == '{') { |
5720 | bracket = s; | |
5721 | s++; | |
5722 | } | |
5723 | else if (ck_uni) | |
5724 | check_uni(); | |
93a17b20 | 5725 | if (s < send) |
79072805 LW |
5726 | *d = *s++; |
5727 | d[1] = '\0'; | |
2b92dfce | 5728 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5729 | *d = toCTRL(*s); |
5730 | s++; | |
de3bb511 | 5731 | } |
79072805 | 5732 | if (bracket) { |
748a9306 | 5733 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5734 | while (s < send) { |
5735 | char ch = *s++; | |
5736 | if (ch != ' ' && ch != '\t') { | |
5737 | *d = ch; | |
5738 | break; | |
5739 | } | |
5740 | } | |
748a9306 | 5741 | } |
834a4ddd | 5742 | if (isIDFIRST_lazy(d)) { |
79072805 | 5743 | d++; |
a0ed51b3 LW |
5744 | if (UTF) { |
5745 | e = s; | |
834a4ddd | 5746 | while (e < send && isALNUM_lazy(e) || *e == ':') { |
a0ed51b3 | 5747 | e += UTF8SKIP(e); |
dfe13c55 | 5748 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5749 | e += UTF8SKIP(e); |
5750 | } | |
5751 | Copy(s, d, e - s, char); | |
5752 | d += e - s; | |
5753 | s = e; | |
5754 | } | |
5755 | else { | |
2b92dfce | 5756 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5757 | *d++ = *s++; |
2b92dfce | 5758 | if (d >= e) |
cea2e8a9 | 5759 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5760 | } |
79072805 | 5761 | *d = '\0'; |
748a9306 | 5762 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5763 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5764 | dTHR; /* only for ckWARN */ |
599cee73 | 5765 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5766 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5767 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5768 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5769 | funny, dest, brack, funny, dest, brack); |
5770 | } | |
79072805 | 5771 | bracket++; |
a0be28da | 5772 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
5773 | return s; |
5774 | } | |
2b92dfce GS |
5775 | } |
5776 | /* Handle extended ${^Foo} variables | |
5777 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5778 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5779 | && isALNUM(*s)) | |
5780 | { | |
5781 | d++; | |
5782 | while (isALNUM(*s) && d < e) { | |
5783 | *d++ = *s++; | |
5784 | } | |
5785 | if (d >= e) | |
cea2e8a9 | 5786 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5787 | *d = '\0'; |
79072805 LW |
5788 | } |
5789 | if (*s == '}') { | |
5790 | s++; | |
3280af22 NIS |
5791 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5792 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5793 | if (funny == '#') |
5794 | funny = '@'; | |
d008e5eb GS |
5795 | if (PL_lex_state == LEX_NORMAL) { |
5796 | dTHR; /* only for ckWARN */ | |
5797 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5798 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5799 | { |
cea2e8a9 | 5800 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5801 | "Ambiguous use of %c{%s} resolved to %c%s", |
5802 | funny, dest, funny, dest); | |
5803 | } | |
5804 | } | |
79072805 LW |
5805 | } |
5806 | else { | |
5807 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5808 | *dest = '\0'; |
79072805 LW |
5809 | } |
5810 | } | |
3280af22 NIS |
5811 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5812 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5813 | return s; |
5814 | } | |
5815 | ||
cea2e8a9 GS |
5816 | void |
5817 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5818 | { |
bbce6d69 | 5819 | if (ch == 'i') |
a0d0e21e | 5820 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5821 | else if (ch == 'g') |
5822 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5823 | else if (ch == 'c') |
5824 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5825 | else if (ch == 'o') |
5826 | *pmfl |= PMf_KEEP; | |
5827 | else if (ch == 'm') | |
5828 | *pmfl |= PMf_MULTILINE; | |
5829 | else if (ch == 's') | |
5830 | *pmfl |= PMf_SINGLELINE; | |
5831 | else if (ch == 'x') | |
5832 | *pmfl |= PMf_EXTENDED; | |
5833 | } | |
378cc40b | 5834 | |
76e3520e | 5835 | STATIC char * |
cea2e8a9 | 5836 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5837 | { |
79072805 LW |
5838 | PMOP *pm; |
5839 | char *s; | |
378cc40b | 5840 | |
09bef843 | 5841 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5842 | if (!s) { |
3280af22 NIS |
5843 | if (PL_lex_stuff) |
5844 | SvREFCNT_dec(PL_lex_stuff); | |
5845 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5846 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5847 | } |
bbce6d69 | 5848 | |
8782bef2 | 5849 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5850 | if (PL_multi_open == '?') |
79072805 | 5851 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5852 | if(type == OP_QR) { |
5853 | while (*s && strchr("iomsx", *s)) | |
5854 | pmflag(&pm->op_pmflags,*s++); | |
5855 | } | |
5856 | else { | |
5857 | while (*s && strchr("iogcmsx", *s)) | |
5858 | pmflag(&pm->op_pmflags,*s++); | |
5859 | } | |
4633a7c4 | 5860 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5861 | |
3280af22 | 5862 | PL_lex_op = (OP*)pm; |
79072805 | 5863 | yylval.ival = OP_MATCH; |
378cc40b LW |
5864 | return s; |
5865 | } | |
5866 | ||
76e3520e | 5867 | STATIC char * |
cea2e8a9 | 5868 | S_scan_subst(pTHX_ char *start) |
79072805 | 5869 | { |
a0d0e21e | 5870 | register char *s; |
79072805 | 5871 | register PMOP *pm; |
4fdae800 | 5872 | I32 first_start; |
79072805 LW |
5873 | I32 es = 0; |
5874 | ||
79072805 LW |
5875 | yylval.ival = OP_NULL; |
5876 | ||
09bef843 | 5877 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5878 | |
5879 | if (!s) { | |
3280af22 NIS |
5880 | if (PL_lex_stuff) |
5881 | SvREFCNT_dec(PL_lex_stuff); | |
5882 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5883 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5884 | } |
79072805 | 5885 | |
3280af22 | 5886 | if (s[-1] == PL_multi_open) |
79072805 LW |
5887 | s--; |
5888 | ||
3280af22 | 5889 | first_start = PL_multi_start; |
09bef843 | 5890 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5891 | if (!s) { |
3280af22 NIS |
5892 | if (PL_lex_stuff) |
5893 | SvREFCNT_dec(PL_lex_stuff); | |
5894 | PL_lex_stuff = Nullsv; | |
5895 | if (PL_lex_repl) | |
5896 | SvREFCNT_dec(PL_lex_repl); | |
5897 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5898 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 5899 | } |
3280af22 | 5900 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5901 | |
79072805 | 5902 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5903 | while (*s) { |
a687059c LW |
5904 | if (*s == 'e') { |
5905 | s++; | |
2f3197b3 | 5906 | es++; |
a687059c | 5907 | } |
b3eb6a9b | 5908 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5909 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5910 | else |
5911 | break; | |
378cc40b | 5912 | } |
79072805 LW |
5913 | |
5914 | if (es) { | |
5915 | SV *repl; | |
0244c3a4 GS |
5916 | PL_sublex_info.super_bufptr = s; |
5917 | PL_sublex_info.super_bufend = PL_bufend; | |
5918 | PL_multi_end = 0; | |
79072805 | 5919 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 5920 | repl = newSVpvn("",0); |
463ee0b2 | 5921 | while (es-- > 0) |
a0d0e21e | 5922 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5923 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5924 | sv_catsv(repl, PL_lex_repl); |
79072805 | 5925 | sv_catpvn(repl, " };", 2); |
25da4f38 | 5926 | SvEVALED_on(repl); |
3280af22 NIS |
5927 | SvREFCNT_dec(PL_lex_repl); |
5928 | PL_lex_repl = repl; | |
378cc40b | 5929 | } |
79072805 | 5930 | |
4633a7c4 | 5931 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5932 | PL_lex_op = (OP*)pm; |
79072805 | 5933 | yylval.ival = OP_SUBST; |
378cc40b LW |
5934 | return s; |
5935 | } | |
5936 | ||
76e3520e | 5937 | STATIC char * |
cea2e8a9 | 5938 | S_scan_trans(pTHX_ char *start) |
378cc40b | 5939 | { |
a0d0e21e | 5940 | register char* s; |
11343788 | 5941 | OP *o; |
79072805 LW |
5942 | short *tbl; |
5943 | I32 squash; | |
a0ed51b3 | 5944 | I32 del; |
79072805 | 5945 | I32 complement; |
a0ed51b3 LW |
5946 | I32 utf8; |
5947 | I32 count = 0; | |
79072805 LW |
5948 | |
5949 | yylval.ival = OP_NULL; | |
5950 | ||
09bef843 | 5951 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5952 | if (!s) { |
3280af22 NIS |
5953 | if (PL_lex_stuff) |
5954 | SvREFCNT_dec(PL_lex_stuff); | |
5955 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5956 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 5957 | } |
3280af22 | 5958 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5959 | s--; |
5960 | ||
09bef843 | 5961 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5962 | if (!s) { |
3280af22 NIS |
5963 | if (PL_lex_stuff) |
5964 | SvREFCNT_dec(PL_lex_stuff); | |
5965 | PL_lex_stuff = Nullsv; | |
5966 | if (PL_lex_repl) | |
5967 | SvREFCNT_dec(PL_lex_repl); | |
5968 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5969 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 5970 | } |
79072805 | 5971 | |
a0ed51b3 LW |
5972 | if (UTF) { |
5973 | o = newSVOP(OP_TRANS, 0, 0); | |
5974 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5975 | } | |
5976 | else { | |
5977 | New(803,tbl,256,short); | |
5978 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5979 | utf8 = 0; | |
5980 | } | |
2f3197b3 | 5981 | |
a0ed51b3 LW |
5982 | complement = del = squash = 0; |
5983 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5984 | if (*s == 'c') |
79072805 | 5985 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5986 | else if (*s == 'd') |
a0ed51b3 LW |
5987 | del = OPpTRANS_DELETE; |
5988 | else if (*s == 's') | |
79072805 | 5989 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5990 | else { |
5991 | switch (count++) { | |
5992 | case 0: | |
5993 | if (*s == 'C') | |
5994 | utf8 &= ~OPpTRANS_FROM_UTF; | |
5995 | else | |
5996 | utf8 |= OPpTRANS_FROM_UTF; | |
5997 | break; | |
5998 | case 1: | |
5999 | if (*s == 'C') | |
6000 | utf8 &= ~OPpTRANS_TO_UTF; | |
6001 | else | |
6002 | utf8 |= OPpTRANS_TO_UTF; | |
6003 | break; | |
6004 | default: | |
cea2e8a9 | 6005 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
6006 | } |
6007 | } | |
395c3793 LW |
6008 | s++; |
6009 | } | |
a0ed51b3 | 6010 | o->op_private = del|squash|complement|utf8; |
79072805 | 6011 | |
3280af22 | 6012 | PL_lex_op = o; |
79072805 LW |
6013 | yylval.ival = OP_TRANS; |
6014 | return s; | |
6015 | } | |
6016 | ||
76e3520e | 6017 | STATIC char * |
cea2e8a9 | 6018 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 6019 | { |
11343788 | 6020 | dTHR; |
79072805 LW |
6021 | SV *herewas; |
6022 | I32 op_type = OP_SCALAR; | |
6023 | I32 len; | |
6024 | SV *tmpstr; | |
6025 | char term; | |
6026 | register char *d; | |
fc36a67e | 6027 | register char *e; |
4633a7c4 | 6028 | char *peek; |
3280af22 | 6029 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6030 | |
6031 | s += 2; | |
3280af22 NIS |
6032 | d = PL_tokenbuf; |
6033 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6034 | if (!outer) |
79072805 | 6035 | *d++ = '\n'; |
4633a7c4 LW |
6036 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
6037 | if (*peek && strchr("`'\"",*peek)) { | |
6038 | s = peek; | |
79072805 | 6039 | term = *s++; |
3280af22 | 6040 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6041 | d += len; |
3280af22 | 6042 | if (s < PL_bufend) |
79072805 | 6043 | s++; |
79072805 LW |
6044 | } |
6045 | else { | |
6046 | if (*s == '\\') | |
6047 | s++, term = '\''; | |
6048 | else | |
6049 | term = '"'; | |
834a4ddd | 6050 | if (!isALNUM_lazy(s)) |
4633a7c4 | 6051 | deprecate("bare << to mean <<\"\""); |
834a4ddd | 6052 | for (; isALNUM_lazy(s); s++) { |
fc36a67e | 6053 | if (d < e) |
6054 | *d++ = *s; | |
6055 | } | |
6056 | } | |
3280af22 | 6057 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6058 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6059 | *d++ = '\n'; |
6060 | *d = '\0'; | |
3280af22 | 6061 | len = d - PL_tokenbuf; |
6a27c188 | 6062 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6063 | d = strchr(s, '\r'); |
6064 | if (d) { | |
6065 | char *olds = s; | |
6066 | s = d; | |
3280af22 | 6067 | while (s < PL_bufend) { |
f63a84b2 LW |
6068 | if (*s == '\r') { |
6069 | *d++ = '\n'; | |
6070 | if (*++s == '\n') | |
6071 | s++; | |
6072 | } | |
6073 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6074 | *d++ = *s++; | |
6075 | s++; | |
6076 | } | |
6077 | else | |
6078 | *d++ = *s++; | |
6079 | } | |
6080 | *d = '\0'; | |
3280af22 NIS |
6081 | PL_bufend = d; |
6082 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6083 | s = olds; |
6084 | } | |
6085 | #endif | |
79072805 | 6086 | d = "\n"; |
3280af22 | 6087 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6088 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6089 | else |
79cb57f6 | 6090 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6091 | s += SvCUR(herewas); |
748a9306 | 6092 | |
8d6dde3e | 6093 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6094 | sv_upgrade(tmpstr, SVt_PVIV); |
6095 | if (term == '\'') { | |
79072805 | 6096 | op_type = OP_CONST; |
748a9306 LW |
6097 | SvIVX(tmpstr) = -1; |
6098 | } | |
6099 | else if (term == '`') { | |
79072805 | 6100 | op_type = OP_BACKTICK; |
748a9306 LW |
6101 | SvIVX(tmpstr) = '\\'; |
6102 | } | |
79072805 LW |
6103 | |
6104 | CLINE; | |
57843af0 | 6105 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6106 | PL_multi_open = PL_multi_close = '<'; |
6107 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6108 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6109 | char *bufptr = PL_sublex_info.super_bufptr; | |
6110 | char *bufend = PL_sublex_info.super_bufend; | |
6111 | char *olds = s - SvCUR(herewas); | |
6112 | s = strchr(bufptr, '\n'); | |
6113 | if (!s) | |
6114 | s = bufend; | |
6115 | d = s; | |
6116 | while (s < bufend && | |
6117 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6118 | if (*s++ == '\n') | |
57843af0 | 6119 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6120 | } |
6121 | if (s >= bufend) { | |
57843af0 | 6122 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6123 | missingterm(PL_tokenbuf); |
6124 | } | |
6125 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6126 | sv_setpvn(tmpstr,d+1,s-d); | |
6127 | s += len - 1; | |
6128 | sv_catpvn(herewas,s,bufend-s); | |
6129 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6130 | ||
6131 | s = olds; | |
6132 | goto retval; | |
6133 | } | |
6134 | else if (!outer) { | |
79072805 | 6135 | d = s; |
3280af22 NIS |
6136 | while (s < PL_bufend && |
6137 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6138 | if (*s++ == '\n') |
57843af0 | 6139 | CopLINE_inc(PL_curcop); |
79072805 | 6140 | } |
3280af22 | 6141 | if (s >= PL_bufend) { |
57843af0 | 6142 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6143 | missingterm(PL_tokenbuf); |
79072805 LW |
6144 | } |
6145 | sv_setpvn(tmpstr,d+1,s-d); | |
6146 | s += len - 1; | |
57843af0 | 6147 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6148 | |
3280af22 NIS |
6149 | sv_catpvn(herewas,s,PL_bufend-s); |
6150 | sv_setsv(PL_linestr,herewas); | |
6151 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6152 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6153 | } |
6154 | else | |
6155 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6156 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6157 | if (!outer || |
3280af22 | 6158 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6159 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6160 | missingterm(PL_tokenbuf); |
79072805 | 6161 | } |
57843af0 | 6162 | CopLINE_inc(PL_curcop); |
3280af22 | 6163 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6164 | #ifndef PERL_STRICT_CR |
3280af22 | 6165 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6166 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6167 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6168 | { |
3280af22 NIS |
6169 | PL_bufend[-2] = '\n'; |
6170 | PL_bufend--; | |
6171 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6172 | } |
3280af22 NIS |
6173 | else if (PL_bufend[-1] == '\r') |
6174 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6175 | } |
3280af22 NIS |
6176 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6177 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6178 | #endif |
3280af22 | 6179 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6180 | SV *sv = NEWSV(88,0); |
6181 | ||
93a17b20 | 6182 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6183 | sv_setsv(sv,PL_linestr); |
57843af0 | 6184 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6185 | } |
3280af22 NIS |
6186 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6187 | s = PL_bufend - 1; | |
79072805 | 6188 | *s = ' '; |
3280af22 NIS |
6189 | sv_catsv(PL_linestr,herewas); |
6190 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6191 | } |
6192 | else { | |
3280af22 NIS |
6193 | s = PL_bufend; |
6194 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6195 | } |
6196 | } | |
79072805 | 6197 | s++; |
0244c3a4 | 6198 | retval: |
57843af0 | 6199 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6200 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6201 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6202 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6203 | } |
8990e307 | 6204 | SvREFCNT_dec(herewas); |
3280af22 | 6205 | PL_lex_stuff = tmpstr; |
79072805 LW |
6206 | yylval.ival = op_type; |
6207 | return s; | |
6208 | } | |
6209 | ||
02aa26ce NT |
6210 | /* scan_inputsymbol |
6211 | takes: current position in input buffer | |
6212 | returns: new position in input buffer | |
6213 | side-effects: yylval and lex_op are set. | |
6214 | ||
6215 | This code handles: | |
6216 | ||
6217 | <> read from ARGV | |
6218 | <FH> read from filehandle | |
6219 | <pkg::FH> read from package qualified filehandle | |
6220 | <pkg'FH> read from package qualified filehandle | |
6221 | <$fh> read from filehandle in $fh | |
6222 | <*.h> filename glob | |
6223 | ||
6224 | */ | |
6225 | ||
76e3520e | 6226 | STATIC char * |
cea2e8a9 | 6227 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6228 | { |
02aa26ce | 6229 | register char *s = start; /* current position in buffer */ |
79072805 | 6230 | register char *d; |
fc36a67e | 6231 | register char *e; |
1b420867 | 6232 | char *end; |
79072805 LW |
6233 | I32 len; |
6234 | ||
3280af22 NIS |
6235 | d = PL_tokenbuf; /* start of temp holding space */ |
6236 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6237 | end = strchr(s, '\n'); |
6238 | if (!end) | |
6239 | end = PL_bufend; | |
6240 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6241 | |
6242 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6243 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6244 | */ |
6245 | ||
3280af22 | 6246 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6247 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6248 | if (s >= end) |
cea2e8a9 | 6249 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6250 | |
fc36a67e | 6251 | s++; |
02aa26ce NT |
6252 | |
6253 | /* check for <$fh> | |
6254 | Remember, only scalar variables are interpreted as filehandles by | |
6255 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6256 | treated as a glob() call. | |
6257 | This code makes use of the fact that except for the $ at the front, | |
6258 | a scalar variable and a filehandle look the same. | |
6259 | */ | |
4633a7c4 | 6260 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6261 | |
6262 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
834a4ddd | 6263 | while (*d && (isALNUM_lazy(d) || *d == '\'' || *d == ':')) |
79072805 | 6264 | d++; |
02aa26ce NT |
6265 | |
6266 | /* If we've tried to read what we allow filehandles to look like, and | |
6267 | there's still text left, then it must be a glob() and not a getline. | |
6268 | Use scan_str to pull out the stuff between the <> and treat it | |
6269 | as nothing more than a string. | |
6270 | */ | |
6271 | ||
3280af22 | 6272 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6273 | yylval.ival = OP_GLOB; |
6274 | set_csh(); | |
09bef843 | 6275 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6276 | if (!s) |
cea2e8a9 | 6277 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6278 | return s; |
6279 | } | |
395c3793 | 6280 | else { |
02aa26ce | 6281 | /* we're in a filehandle read situation */ |
3280af22 | 6282 | d = PL_tokenbuf; |
02aa26ce NT |
6283 | |
6284 | /* turn <> into <ARGV> */ | |
79072805 LW |
6285 | if (!len) |
6286 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6287 | |
6288 | /* if <$fh>, create the ops to turn the variable into a | |
6289 | filehandle | |
6290 | */ | |
79072805 | 6291 | if (*d == '$') { |
a0d0e21e | 6292 | I32 tmp; |
02aa26ce NT |
6293 | |
6294 | /* try to find it in the pad for this block, otherwise find | |
6295 | add symbol table ops | |
6296 | */ | |
11343788 MB |
6297 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6298 | OP *o = newOP(OP_PADSV, 0); | |
6299 | o->op_targ = tmp; | |
f5284f61 | 6300 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6301 | } |
6302 | else { | |
6303 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6304 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6305 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6306 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6307 | } |
f5284f61 IZ |
6308 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6309 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6310 | yylval.ival = OP_NULL; |
6311 | } | |
02aa26ce NT |
6312 | |
6313 | /* If it's none of the above, it must be a literal filehandle | |
6314 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6315 | else { |
85e6fe83 | 6316 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6317 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6318 | yylval.ival = OP_NULL; |
6319 | } | |
6320 | } | |
02aa26ce | 6321 | |
79072805 LW |
6322 | return s; |
6323 | } | |
6324 | ||
02aa26ce NT |
6325 | |
6326 | /* scan_str | |
6327 | takes: start position in buffer | |
09bef843 SB |
6328 | keep_quoted preserve \ on the embedded delimiter(s) |
6329 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6330 | returns: position to continue reading from buffer |
6331 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6332 | updates the read buffer. | |
6333 | ||
6334 | This subroutine pulls a string out of the input. It is called for: | |
6335 | q single quotes q(literal text) | |
6336 | ' single quotes 'literal text' | |
6337 | qq double quotes qq(interpolate $here please) | |
6338 | " double quotes "interpolate $here please" | |
6339 | qx backticks qx(/bin/ls -l) | |
6340 | ` backticks `/bin/ls -l` | |
6341 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6342 | m// regexp match m/this/ | |
6343 | s/// regexp substitute s/this/that/ | |
6344 | tr/// string transliterate tr/this/that/ | |
6345 | y/// string transliterate y/this/that/ | |
6346 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6347 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6348 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6349 | ||
6350 | In most of these cases (all but <>, patterns and transliterate) | |
6351 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6352 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6353 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6354 | calls scan_str(). | |
6355 | ||
6356 | It skips whitespace before the string starts, and treats the first | |
6357 | character as the delimiter. If the delimiter is one of ([{< then | |
6358 | the corresponding "close" character )]}> is used as the closing | |
6359 | delimiter. It allows quoting of delimiters, and if the string has | |
6360 | balanced delimiters ([{<>}]) it allows nesting. | |
6361 | ||
6362 | The lexer always reads these strings into lex_stuff, except in the | |
6363 | case of the operators which take *two* arguments (s/// and tr///) | |
6364 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6365 | arg to s or tr) and if so puts the string into lex_repl. | |
6366 | ||
6367 | */ | |
6368 | ||
76e3520e | 6369 | STATIC char * |
09bef843 | 6370 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6371 | { |
11343788 | 6372 | dTHR; |
02aa26ce NT |
6373 | SV *sv; /* scalar value: string */ |
6374 | char *tmps; /* temp string, used for delimiter matching */ | |
6375 | register char *s = start; /* current position in the buffer */ | |
6376 | register char term; /* terminating character */ | |
6377 | register char *to; /* current position in the sv's data */ | |
6378 | I32 brackets = 1; /* bracket nesting level */ | |
6379 | ||
6380 | /* skip space before the delimiter */ | |
fb73857a | 6381 | if (isSPACE(*s)) |
6382 | s = skipspace(s); | |
02aa26ce NT |
6383 | |
6384 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6385 | CLINE; |
02aa26ce NT |
6386 | |
6387 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6388 | term = *s; |
02aa26ce | 6389 | /* mark where we are */ |
57843af0 | 6390 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6391 | PL_multi_open = term; |
02aa26ce NT |
6392 | |
6393 | /* find corresponding closing delimiter */ | |
93a17b20 | 6394 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6395 | term = tmps[5]; |
3280af22 | 6396 | PL_multi_close = term; |
79072805 | 6397 | |
02aa26ce | 6398 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6399 | assuming. 79 is the SV's initial length. What a random number. */ |
6400 | sv = NEWSV(87,79); | |
ed6116ce LW |
6401 | sv_upgrade(sv, SVt_PVIV); |
6402 | SvIVX(sv) = term; | |
a0d0e21e | 6403 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6404 | |
6405 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6406 | if (keep_delims) |
6407 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6408 | s++; |
6409 | for (;;) { | |
02aa26ce | 6410 | /* extend sv if need be */ |
3280af22 | 6411 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6412 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6413 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6414 | |
02aa26ce | 6415 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6416 | if (PL_multi_open == PL_multi_close) { |
6417 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6418 | /* embedded newlines increment the current line number */ |
3280af22 | 6419 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6420 | CopLINE_inc(PL_curcop); |
02aa26ce | 6421 | /* handle quoted delimiters */ |
3280af22 | 6422 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6423 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6424 | s++; |
02aa26ce | 6425 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6426 | else |
6427 | *to++ = *s++; | |
6428 | } | |
02aa26ce NT |
6429 | /* terminate when run out of buffer (the for() condition), or |
6430 | have found the terminator */ | |
93a17b20 LW |
6431 | else if (*s == term) |
6432 | break; | |
6433 | *to = *s; | |
6434 | } | |
6435 | } | |
02aa26ce NT |
6436 | |
6437 | /* if the terminator isn't the same as the start character (e.g., | |
6438 | matched brackets), we have to allow more in the quoting, and | |
6439 | be prepared for nested brackets. | |
6440 | */ | |
93a17b20 | 6441 | else { |
02aa26ce | 6442 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6443 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6444 | /* embedded newlines increment the line count */ |
3280af22 | 6445 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6446 | CopLINE_inc(PL_curcop); |
02aa26ce | 6447 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6448 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6449 | if (!keep_quoted && |
6450 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6451 | s++; |
6452 | else | |
6453 | *to++ = *s++; | |
6454 | } | |
02aa26ce | 6455 | /* allow nested opens and closes */ |
3280af22 | 6456 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6457 | break; |
3280af22 | 6458 | else if (*s == PL_multi_open) |
93a17b20 LW |
6459 | brackets++; |
6460 | *to = *s; | |
6461 | } | |
6462 | } | |
02aa26ce | 6463 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6464 | *to = '\0'; |
463ee0b2 | 6465 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6466 | |
02aa26ce NT |
6467 | /* |
6468 | * this next chunk reads more into the buffer if we're not done yet | |
6469 | */ | |
6470 | ||
3280af22 | 6471 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 6472 | |
6a27c188 | 6473 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6474 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6475 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6476 | (to[-2] == '\n' && to[-1] == '\r')) | |
6477 | { | |
f63a84b2 LW |
6478 | to[-2] = '\n'; |
6479 | to--; | |
6480 | SvCUR_set(sv, to - SvPVX(sv)); | |
6481 | } | |
6482 | else if (to[-1] == '\r') | |
6483 | to[-1] = '\n'; | |
6484 | } | |
6485 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6486 | to[-1] = '\n'; | |
6487 | #endif | |
6488 | ||
02aa26ce NT |
6489 | /* if we're out of file, or a read fails, bail and reset the current |
6490 | line marker so we can report where the unterminated string began | |
6491 | */ | |
3280af22 NIS |
6492 | if (!PL_rsfp || |
6493 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6494 | sv_free(sv); |
57843af0 | 6495 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6496 | return Nullch; |
6497 | } | |
02aa26ce | 6498 | /* we read a line, so increment our line counter */ |
57843af0 | 6499 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6500 | |
02aa26ce | 6501 | /* update debugger info */ |
3280af22 | 6502 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6503 | SV *sv = NEWSV(88,0); |
6504 | ||
93a17b20 | 6505 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6506 | sv_setsv(sv,PL_linestr); |
57843af0 | 6507 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6508 | } |
a0ed51b3 | 6509 | |
3280af22 NIS |
6510 | /* having changed the buffer, we must update PL_bufend */ |
6511 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6512 | } |
02aa26ce NT |
6513 | |
6514 | /* at this point, we have successfully read the delimited string */ | |
6515 | ||
09bef843 SB |
6516 | if (keep_delims) |
6517 | sv_catpvn(sv, s, 1); | |
57843af0 | 6518 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6519 | s++; |
02aa26ce NT |
6520 | |
6521 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6522 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6523 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6524 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6525 | } |
02aa26ce NT |
6526 | |
6527 | /* decide whether this is the first or second quoted string we've read | |
6528 | for this op | |
6529 | */ | |
6530 | ||
3280af22 NIS |
6531 | if (PL_lex_stuff) |
6532 | PL_lex_repl = sv; | |
79072805 | 6533 | else |
3280af22 | 6534 | PL_lex_stuff = sv; |
378cc40b LW |
6535 | return s; |
6536 | } | |
6537 | ||
02aa26ce NT |
6538 | /* |
6539 | scan_num | |
6540 | takes: pointer to position in buffer | |
6541 | returns: pointer to new position in buffer | |
6542 | side-effects: builds ops for the constant in yylval.op | |
6543 | ||
6544 | Read a number in any of the formats that Perl accepts: | |
6545 | ||
4f19785b | 6546 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6547 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6548 | ||
6549 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6550 | underbars before a decimal point must be at three digit intervals. | |
6551 | ||
3280af22 | 6552 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6553 | thing it reads. |
6554 | ||
6555 | If it reads a number without a decimal point or an exponent, it will | |
6556 | try converting the number to an integer and see if it can do so | |
6557 | without loss of precision. | |
6558 | */ | |
6559 | ||
378cc40b | 6560 | char * |
864dbfa3 | 6561 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6562 | { |
02aa26ce NT |
6563 | register char *s = start; /* current position in buffer */ |
6564 | register char *d; /* destination in temp buffer */ | |
6565 | register char *e; /* end of temp buffer */ | |
b8403495 | 6566 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6567 | NV value; /* number read, as a double */ |
a7cb1f99 | 6568 | SV *sv = Nullsv; /* place to put the converted number */ |
b8403495 | 6569 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6570 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6571 | static char number_too_long[] = "Number too long"; |
378cc40b | 6572 | |
02aa26ce NT |
6573 | /* We use the first character to decide what type of number this is */ |
6574 | ||
378cc40b | 6575 | switch (*s) { |
79072805 | 6576 | default: |
cea2e8a9 | 6577 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6578 | |
6579 | /* if it starts with a 0, it could be an octal number, a decimal in | |
a7cb1f99 | 6580 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
6581 | case '0': |
6582 | { | |
02aa26ce NT |
6583 | /* variables: |
6584 | u holds the "number so far" | |
4f19785b WSI |
6585 | shift the power of 2 of the base |
6586 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6587 | overflowed was the number more than we can hold? |
6588 | ||
6589 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6590 | we in octal/hex/binary?" indicator to disallow hex characters |
6591 | when in octal mode. | |
02aa26ce | 6592 | */ |
f248d071 | 6593 | dTHR; |
9e24b6e2 JH |
6594 | NV n = 0.0; |
6595 | UV u = 0; | |
79072805 | 6596 | I32 shift; |
9e24b6e2 JH |
6597 | bool overflowed = FALSE; |
6598 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6599 | static char* bases[5] = { "", "binary", "", "octal", | |
6600 | "hexadecimal" }; | |
6601 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6602 | "Hexadecimal" }; | |
6603 | static char *maxima[5] = { "", | |
6604 | "0b11111111111111111111111111111111", | |
6605 | "", | |
893fe2c2 | 6606 | "037777777777", |
9e24b6e2 JH |
6607 | "0xffffffff" }; |
6608 | char *base, *Base, *max; | |
378cc40b | 6609 | |
02aa26ce | 6610 | /* check for hex */ |
378cc40b LW |
6611 | if (s[1] == 'x') { |
6612 | shift = 4; | |
6613 | s += 2; | |
4f19785b WSI |
6614 | } else if (s[1] == 'b') { |
6615 | shift = 1; | |
6616 | s += 2; | |
378cc40b | 6617 | } |
02aa26ce | 6618 | /* check for a decimal in disguise */ |
b78218b7 | 6619 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6620 | goto decimal; |
02aa26ce | 6621 | /* so it must be octal */ |
378cc40b LW |
6622 | else |
6623 | shift = 3; | |
9e24b6e2 JH |
6624 | |
6625 | base = bases[shift]; | |
6626 | Base = Bases[shift]; | |
6627 | max = maxima[shift]; | |
02aa26ce | 6628 | |
4f19785b | 6629 | /* read the rest of the number */ |
378cc40b | 6630 | for (;;) { |
9e24b6e2 | 6631 | /* x is used in the overflow test, |
893fe2c2 | 6632 | b is the digit we're adding on. */ |
9e24b6e2 | 6633 | UV x, b; |
55497cff | 6634 | |
378cc40b | 6635 | switch (*s) { |
02aa26ce NT |
6636 | |
6637 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6638 | default: |
6639 | goto out; | |
02aa26ce NT |
6640 | |
6641 | /* _ are ignored */ | |
de3bb511 LW |
6642 | case '_': |
6643 | s++; | |
6644 | break; | |
02aa26ce NT |
6645 | |
6646 | /* 8 and 9 are not octal */ | |
378cc40b | 6647 | case '8': case '9': |
4f19785b | 6648 | if (shift == 3) |
cea2e8a9 | 6649 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6650 | /* FALL THROUGH */ |
02aa26ce NT |
6651 | |
6652 | /* octal digits */ | |
4f19785b | 6653 | case '2': case '3': case '4': |
378cc40b | 6654 | case '5': case '6': case '7': |
4f19785b | 6655 | if (shift == 1) |
cea2e8a9 | 6656 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6657 | /* FALL THROUGH */ |
6658 | ||
6659 | case '0': case '1': | |
02aa26ce | 6660 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6661 | goto digit; |
02aa26ce NT |
6662 | |
6663 | /* hex digits */ | |
378cc40b LW |
6664 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6665 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6666 | /* make sure they said 0x */ |
378cc40b LW |
6667 | if (shift != 4) |
6668 | goto out; | |
55497cff | 6669 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6670 | |
6671 | /* Prepare to put the digit we have onto the end | |
6672 | of the number so far. We check for overflows. | |
6673 | */ | |
6674 | ||
55497cff | 6675 | digit: |
9e24b6e2 JH |
6676 | if (!overflowed) { |
6677 | x = u << shift; /* make room for the digit */ | |
6678 | ||
6679 | if ((x >> shift) != u | |
6680 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6681 | dTHR; | |
6682 | overflowed = TRUE; | |
6683 | n = (NV) u; | |
767a6a26 PM |
6684 | if (ckWARN_d(WARN_OVERFLOW)) |
6685 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6686 | "Integer overflow in %s number", |
6687 | base); | |
6688 | } else | |
6689 | u = x | b; /* add the digit to the end */ | |
6690 | } | |
6691 | if (overflowed) { | |
6692 | n *= nvshift[shift]; | |
6693 | /* If an NV has not enough bits in its | |
6694 | * mantissa to represent an UV this summing of | |
6695 | * small low-order numbers is a waste of time | |
6696 | * (because the NV cannot preserve the | |
6697 | * low-order bits anyway): we could just | |
6698 | * remember when did we overflow and in the | |
6699 | * end just multiply n by the right | |
6700 | * amount. */ | |
6701 | n += (NV) b; | |
55497cff | 6702 | } |
378cc40b LW |
6703 | break; |
6704 | } | |
6705 | } | |
02aa26ce NT |
6706 | |
6707 | /* if we get here, we had success: make a scalar value from | |
6708 | the number. | |
6709 | */ | |
378cc40b | 6710 | out: |
79072805 | 6711 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6712 | if (overflowed) { |
6713 | dTHR; | |
767a6a26 PM |
6714 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6715 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6716 | "%s number > %s non-portable", |
6717 | Base, max); | |
6718 | sv_setnv(sv, n); | |
6719 | } | |
6720 | else { | |
15041a67 | 6721 | #if UVSIZE > 4 |
9e24b6e2 | 6722 | dTHR; |
767a6a26 PM |
6723 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6724 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6725 | "%s number > %s non-portable", |
6726 | Base, max); | |
2cc4c2dc | 6727 | #endif |
9e24b6e2 JH |
6728 | sv_setuv(sv, u); |
6729 | } | |
2cc4c2dc | 6730 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6731 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6732 | } |
6733 | break; | |
02aa26ce NT |
6734 | |
6735 | /* | |
6736 | handle decimal numbers. | |
6737 | we're also sent here when we read a 0 as the first digit | |
6738 | */ | |
378cc40b LW |
6739 | case '1': case '2': case '3': case '4': case '5': |
6740 | case '6': case '7': case '8': case '9': case '.': | |
6741 | decimal: | |
3280af22 NIS |
6742 | d = PL_tokenbuf; |
6743 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6744 | floatit = FALSE; |
02aa26ce NT |
6745 | |
6746 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6747 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6748 | /* skip underscores, checking for misplaced ones |
6749 | if -w is on | |
6750 | */ | |
93a17b20 | 6751 | if (*s == '_') { |
d008e5eb | 6752 | dTHR; /* only for ckWARN */ |
599cee73 | 6753 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6754 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6755 | lastub = ++s; |
6756 | } | |
fc36a67e | 6757 | else { |
02aa26ce | 6758 | /* check for end of fixed-length buffer */ |
fc36a67e | 6759 | if (d >= e) |
cea2e8a9 | 6760 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6761 | /* if we're ok, copy the character */ |
378cc40b | 6762 | *d++ = *s++; |
fc36a67e | 6763 | } |
378cc40b | 6764 | } |
02aa26ce NT |
6765 | |
6766 | /* final misplaced underbar check */ | |
d008e5eb GS |
6767 | if (lastub && s - lastub != 3) { |
6768 | dTHR; | |
6769 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6770 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6771 | } |
02aa26ce NT |
6772 | |
6773 | /* read a decimal portion if there is one. avoid | |
6774 | 3..5 being interpreted as the number 3. followed | |
6775 | by .5 | |
6776 | */ | |
2f3197b3 | 6777 | if (*s == '.' && s[1] != '.') { |
79072805 | 6778 | floatit = TRUE; |
378cc40b | 6779 | *d++ = *s++; |
02aa26ce NT |
6780 | |
6781 | /* copy, ignoring underbars, until we run out of | |
6782 | digits. Note: no misplaced underbar checks! | |
6783 | */ | |
fc36a67e | 6784 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6785 | /* fixed length buffer check */ |
fc36a67e | 6786 | if (d >= e) |
cea2e8a9 | 6787 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6788 | if (*s != '_') |
6789 | *d++ = *s; | |
378cc40b LW |
6790 | } |
6791 | } | |
02aa26ce NT |
6792 | |
6793 | /* read exponent part, if present */ | |
93a17b20 | 6794 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6795 | floatit = TRUE; |
6796 | s++; | |
02aa26ce NT |
6797 | |
6798 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6799 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6800 | |
6801 | /* allow positive or negative exponent */ | |
378cc40b LW |
6802 | if (*s == '+' || *s == '-') |
6803 | *d++ = *s++; | |
02aa26ce NT |
6804 | |
6805 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6806 | while (isDIGIT(*s)) { |
6807 | if (d >= e) | |
cea2e8a9 | 6808 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6809 | *d++ = *s++; |
fc36a67e | 6810 | } |
378cc40b | 6811 | } |
02aa26ce NT |
6812 | |
6813 | /* terminate the string */ | |
378cc40b | 6814 | *d = '\0'; |
02aa26ce NT |
6815 | |
6816 | /* make an sv from the string */ | |
79072805 | 6817 | sv = NEWSV(92,0); |
097ee67d JH |
6818 | |
6819 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6820 | |
6821 | /* | |
6822 | See if we can make do with an integer value without loss of | |
6823 | precision. We use I_V to cast to an int, because some | |
6824 | compilers have issues. Then we try casting it back and see | |
6825 | if it was the same. We only do this if we know we | |
6826 | specifically read an integer. | |
6827 | ||
6828 | Note: if floatit is true, then we don't need to do the | |
6829 | conversion at all. | |
6830 | */ | |
1e422769 | 6831 | tryiv = I_V(value); |
65202027 | 6832 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6833 | sv_setiv(sv, tryiv); |
2f3197b3 | 6834 | else |
1e422769 | 6835 | sv_setnv(sv, value); |
b8403495 JH |
6836 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6837 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6838 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6839 | (floatit ? "float" : "integer"), |
6840 | sv, Nullsv, NULL); | |
378cc40b | 6841 | break; |
a7cb1f99 GS |
6842 | /* if it starts with a v, it could be a version number */ |
6843 | case 'v': | |
6844 | { | |
a7cb1f99 GS |
6845 | char *pos = s; |
6846 | pos++; | |
6847 | while (isDIGIT(*pos)) | |
6848 | pos++; | |
6849 | if (*pos == '.' && isDIGIT(pos[1])) { | |
f83ee824 | 6850 | UV rev; |
a7cb1f99 GS |
6851 | U8 tmpbuf[10]; |
6852 | U8 *tmpend; | |
6853 | NV nshift = 1.0; | |
6854 | s++; /* get past 'v' */ | |
6855 | ||
6856 | sv = NEWSV(92,5); | |
6857 | SvUPGRADE(sv, SVt_PVNV); | |
6858 | sv_setpvn(sv, "", 0); | |
6859 | ||
6860 | do { | |
6861 | rev = atoi(s); | |
6862 | s = ++pos; | |
6863 | while (isDIGIT(*pos)) | |
6864 | pos++; | |
6865 | ||
6866 | tmpend = uv_to_utf8(tmpbuf, rev); | |
6867 | *tmpend = '\0'; | |
33079e28 | 6868 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6869 | if (rev > 0) |
6870 | SvNVX(sv) += (NV)rev/nshift; | |
6871 | nshift *= 1000; | |
6872 | } while (*pos == '.' && isDIGIT(pos[1])); | |
6873 | ||
6874 | rev = atoi(s); | |
6875 | s = pos; | |
6876 | tmpend = uv_to_utf8(tmpbuf, rev); | |
6877 | *tmpend = '\0'; | |
33079e28 | 6878 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); |
a7cb1f99 GS |
6879 | if (rev > 0) |
6880 | SvNVX(sv) += (NV)rev/nshift; | |
6881 | ||
6882 | SvPOK_on(sv); | |
6883 | SvNOK_on(sv); | |
6884 | SvREADONLY_on(sv); | |
6885 | SvUTF8_on(sv); | |
6886 | } | |
6887 | } | |
6888 | break; | |
79072805 | 6889 | } |
a687059c | 6890 | |
02aa26ce NT |
6891 | /* make the op for the constant and return */ |
6892 | ||
a7cb1f99 GS |
6893 | if (sv) |
6894 | yylval.opval = newSVOP(OP_CONST, 0, sv); | |
6895 | else | |
6896 | yylval.opval = Nullop; | |
a687059c | 6897 | |
378cc40b LW |
6898 | return s; |
6899 | } | |
6900 | ||
76e3520e | 6901 | STATIC char * |
cea2e8a9 | 6902 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 6903 | { |
11343788 | 6904 | dTHR; |
79072805 | 6905 | register char *eol; |
378cc40b | 6906 | register char *t; |
79cb57f6 | 6907 | SV *stuff = newSVpvn("",0); |
79072805 | 6908 | bool needargs = FALSE; |
378cc40b | 6909 | |
79072805 | 6910 | while (!needargs) { |
85e6fe83 | 6911 | if (*s == '.' || *s == '}') { |
79072805 | 6912 | /*SUPPRESS 530*/ |
51882d45 GS |
6913 | #ifdef PERL_STRICT_CR |
6914 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6915 | #else | |
6916 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6917 | #endif | |
6a65c6a0 | 6918 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
6919 | break; |
6920 | } | |
3280af22 | 6921 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6922 | eol = strchr(s,'\n'); |
0f85fab0 | 6923 | if (!eol++) |
3280af22 | 6924 | eol = PL_bufend; |
0f85fab0 LW |
6925 | } |
6926 | else | |
3280af22 | 6927 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6928 | if (*s != '#') { |
a0d0e21e LW |
6929 | for (t = s; t < eol; t++) { |
6930 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6931 | needargs = FALSE; | |
6932 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6933 | } |
a0d0e21e LW |
6934 | if (*t == '@' || *t == '^') |
6935 | needargs = TRUE; | |
378cc40b | 6936 | } |
a0d0e21e | 6937 | sv_catpvn(stuff, s, eol-s); |
2dc4c65b GS |
6938 | #ifndef PERL_STRICT_CR |
6939 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { | |
6940 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
6941 | end[-2] = '\n'; | |
6942 | end[-1] = '\0'; | |
6943 | SvCUR(stuff)--; | |
6944 | } | |
6945 | #endif | |
79072805 LW |
6946 | } |
6947 | s = eol; | |
3280af22 NIS |
6948 | if (PL_rsfp) { |
6949 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6950 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6951 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6952 | if (!s) { |
3280af22 | 6953 | s = PL_bufptr; |
79072805 | 6954 | yyerror("Format not terminated"); |
378cc40b LW |
6955 | break; |
6956 | } | |
378cc40b | 6957 | } |
463ee0b2 | 6958 | incline(s); |
79072805 | 6959 | } |
a0d0e21e LW |
6960 | enough: |
6961 | if (SvCUR(stuff)) { | |
3280af22 | 6962 | PL_expect = XTERM; |
79072805 | 6963 | if (needargs) { |
3280af22 NIS |
6964 | PL_lex_state = LEX_NORMAL; |
6965 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6966 | force_next(','); |
6967 | } | |
a0d0e21e | 6968 | else |
3280af22 NIS |
6969 | PL_lex_state = LEX_FORMLINE; |
6970 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6971 | force_next(THING); |
3280af22 | 6972 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6973 | force_next(LSTOP); |
378cc40b | 6974 | } |
79072805 | 6975 | else { |
8990e307 | 6976 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6977 | PL_lex_formbrack = 0; |
6978 | PL_bufptr = s; | |
79072805 LW |
6979 | } |
6980 | return s; | |
378cc40b | 6981 | } |
a687059c | 6982 | |
76e3520e | 6983 | STATIC void |
cea2e8a9 | 6984 | S_set_csh(pTHX) |
a687059c | 6985 | { |
ae986130 | 6986 | #ifdef CSH |
3280af22 NIS |
6987 | if (!PL_cshlen) |
6988 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6989 | #endif |
a687059c | 6990 | } |
463ee0b2 | 6991 | |
ba6d6ac9 | 6992 | I32 |
864dbfa3 | 6993 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 6994 | { |
11343788 | 6995 | dTHR; |
3280af22 NIS |
6996 | I32 oldsavestack_ix = PL_savestack_ix; |
6997 | CV* outsidecv = PL_compcv; | |
748a9306 | 6998 | AV* comppadlist; |
8990e307 | 6999 | |
3280af22 NIS |
7000 | if (PL_compcv) { |
7001 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7002 | } |
7766f137 | 7003 | SAVEI32(PL_subline); |
3280af22 NIS |
7004 | save_item(PL_subname); |
7005 | SAVEI32(PL_padix); | |
7766f137 | 7006 | SAVEVPTR(PL_curpad); |
3280af22 NIS |
7007 | SAVESPTR(PL_comppad); |
7008 | SAVESPTR(PL_comppad_name); | |
7009 | SAVESPTR(PL_compcv); | |
7010 | SAVEI32(PL_comppad_name_fill); | |
7011 | SAVEI32(PL_min_intro_pending); | |
7012 | SAVEI32(PL_max_intro_pending); | |
7013 | SAVEI32(PL_pad_reset_pending); | |
7014 | ||
7015 | PL_compcv = (CV*)NEWSV(1104,0); | |
7016 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7017 | CvFLAGS(PL_compcv) |= flags; | |
7018 | ||
7019 | PL_comppad = newAV(); | |
7020 | av_push(PL_comppad, Nullsv); | |
7021 | PL_curpad = AvARRAY(PL_comppad); | |
7022 | PL_comppad_name = newAV(); | |
7023 | PL_comppad_name_fill = 0; | |
7024 | PL_min_intro_pending = 0; | |
7025 | PL_padix = 0; | |
57843af0 | 7026 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 7027 | #ifdef USE_THREADS |
79cb57f6 | 7028 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
7029 | PL_curpad[0] = (SV*)newAV(); |
7030 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 7031 | #endif /* USE_THREADS */ |
748a9306 LW |
7032 | |
7033 | comppadlist = newAV(); | |
7034 | AvREAL_off(comppadlist); | |
3280af22 NIS |
7035 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
7036 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 7037 | |
3280af22 NIS |
7038 | CvPADLIST(PL_compcv) = comppadlist; |
7039 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 7040 | #ifdef USE_THREADS |
533c011a NIS |
7041 | CvOWNER(PL_compcv) = 0; |
7042 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
7043 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 7044 | #endif /* USE_THREADS */ |
748a9306 | 7045 | |
8990e307 LW |
7046 | return oldsavestack_ix; |
7047 | } | |
7048 | ||
7049 | int | |
864dbfa3 | 7050 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7051 | { |
11343788 | 7052 | dTHR; |
faef0170 | 7053 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7054 | yyerror(s); |
faef0170 | 7055 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7056 | return 0; |
8990e307 LW |
7057 | } |
7058 | ||
7059 | int | |
864dbfa3 | 7060 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7061 | { |
11343788 | 7062 | dTHR; |
68dc0745 | 7063 | char *where = NULL; |
7064 | char *context = NULL; | |
7065 | int contlen = -1; | |
46fc3d4c | 7066 | SV *msg; |
463ee0b2 | 7067 | |
3280af22 | 7068 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7069 | where = "at EOF"; |
3280af22 NIS |
7070 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7071 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
7072 | while (isSPACE(*PL_oldoldbufptr)) | |
7073 | PL_oldoldbufptr++; | |
7074 | context = PL_oldoldbufptr; | |
7075 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7076 | } |
3280af22 NIS |
7077 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7078 | PL_oldbufptr != PL_bufptr) { | |
7079 | while (isSPACE(*PL_oldbufptr)) | |
7080 | PL_oldbufptr++; | |
7081 | context = PL_oldbufptr; | |
7082 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7083 | } |
7084 | else if (yychar > 255) | |
68dc0745 | 7085 | where = "next token ???"; |
463ee0b2 | 7086 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
7087 | if (PL_lex_state == LEX_NORMAL || |
7088 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7089 | where = "at end of line"; |
3280af22 | 7090 | else if (PL_lex_inpat) |
68dc0745 | 7091 | where = "within pattern"; |
463ee0b2 | 7092 | else |
68dc0745 | 7093 | where = "within string"; |
463ee0b2 | 7094 | } |
46fc3d4c | 7095 | else { |
79cb57f6 | 7096 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7097 | if (yychar < 32) |
cea2e8a9 | 7098 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7099 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7100 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7101 | else |
cea2e8a9 | 7102 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7103 | where = SvPVX(where_sv); |
463ee0b2 | 7104 | } |
46fc3d4c | 7105 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf GS |
7106 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
7107 | CopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); | |
68dc0745 | 7108 | if (context) |
cea2e8a9 | 7109 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7110 | else |
cea2e8a9 | 7111 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7112 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7113 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7114 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7115 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7116 | PL_multi_end = 0; |
a0d0e21e | 7117 | } |
faef0170 | 7118 | if (PL_in_eval & EVAL_WARNONLY) |
cea2e8a9 | 7119 | Perl_warn(aTHX_ "%_", msg); |
463ee0b2 | 7120 | else |
5a844595 GS |
7121 | qerror(msg); |
7122 | if (PL_error_count >= 10) | |
ed094faf | 7123 | Perl_croak(aTHX_ "%s has too many errors.\n", CopFILE(PL_curcop)); |
3280af22 NIS |
7124 | PL_in_my = 0; |
7125 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7126 | return 0; |
7127 | } | |
4e35701f | 7128 | |
161b471a | 7129 | |
51371543 | 7130 | #ifdef PERL_OBJECT |
51371543 GS |
7131 | #include "XSUB.h" |
7132 | #endif | |
7133 | ||
ffb4593c NT |
7134 | /* |
7135 | * restore_rsfp | |
7136 | * Restore a source filter. | |
7137 | */ | |
7138 | ||
51371543 GS |
7139 | static void |
7140 | restore_rsfp(pTHXo_ void *f) | |
7141 | { | |
7142 | PerlIO *fp = (PerlIO*)f; | |
7143 | ||
7144 | if (PL_rsfp == PerlIO_stdin()) | |
7145 | PerlIO_clearerr(PL_rsfp); | |
7146 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7147 | PerlIO_close(PL_rsfp); | |
7148 | PL_rsfp = fp; | |
7149 | } |