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 GS |
30 | static void restore_rsfp(pTHXo_ void *f); |
31 | static void restore_expect(pTHXo_ void *e); | |
32 | static void restore_lex_expect(pTHXo_ void *e); | |
33 | ||
a0ed51b3 | 34 | #define UTF (PL_hints & HINT_UTF8) |
834a4ddd LW |
35 | /* |
36 | * Note: we try to be careful never to call the isXXX_utf8() functions | |
37 | * unless we're pretty sure we've seen the beginning of a UTF-8 character | |
38 | * (that is, the two high bits are set). Otherwise we risk loading in the | |
39 | * heavy-duty SWASHINIT and SWASHGET routines unnecessarily. | |
40 | */ | |
41 | #define isIDFIRST_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
42 | ? isIDFIRST(*(p)) \ | |
43 | : isIDFIRST_utf8((U8*)p)) | |
44 | #define isALNUM_lazy(p) ((!UTF || (*((U8*)p) < 0xc0)) \ | |
45 | ? isALNUM(*(p)) \ | |
46 | : isALNUM_utf8((U8*)p)) | |
a0ed51b3 | 47 | |
2b92dfce GS |
48 | /* In variables name $^X, these are the legal values for X. |
49 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
50 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
51 | ||
ffb4593c NT |
52 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
53 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
54 | * can get by with a single comparison (if the compiler is smart enough). |
55 | */ | |
56 | ||
fb73857a | 57 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
58 | ||
55497cff | 59 | #define LEX_NORMAL 10 |
60 | #define LEX_INTERPNORMAL 9 | |
61 | #define LEX_INTERPCASEMOD 8 | |
62 | #define LEX_INTERPPUSH 7 | |
63 | #define LEX_INTERPSTART 6 | |
64 | #define LEX_INTERPEND 5 | |
65 | #define LEX_INTERPENDMAYBE 4 | |
66 | #define LEX_INTERPCONCAT 3 | |
67 | #define LEX_INTERPCONST 2 | |
68 | #define LEX_FORMLINE 1 | |
69 | #define LEX_KNOWNEXT 0 | |
79072805 | 70 | |
395c3793 LW |
71 | #ifdef I_FCNTL |
72 | #include <fcntl.h> | |
73 | #endif | |
fe14fcc3 LW |
74 | #ifdef I_SYS_FILE |
75 | #include <sys/file.h> | |
76 | #endif | |
395c3793 | 77 | |
a790bc05 | 78 | /* XXX If this causes problems, set i_unistd=undef in the hint file. */ |
79 | #ifdef I_UNISTD | |
80 | # include <unistd.h> /* Needed for execv() */ | |
81 | #endif | |
82 | ||
83 | ||
79072805 LW |
84 | #ifdef ff_next |
85 | #undef ff_next | |
d48672a2 LW |
86 | #endif |
87 | ||
a1a0e61e TD |
88 | #ifdef USE_PURE_BISON |
89 | YYSTYPE* yylval_pointer = NULL; | |
90 | int* yychar_pointer = NULL; | |
22c35a8c GS |
91 | # undef yylval |
92 | # undef yychar | |
e4bfbdd4 JH |
93 | # define yylval (*yylval_pointer) |
94 | # define yychar (*yychar_pointer) | |
95 | # define PERL_YYLEX_PARAM yylval_pointer,yychar_pointer | |
cea2e8a9 GS |
96 | # undef yylex |
97 | # define yylex() Perl_yylex(aTHX_ yylval_pointer, yychar_pointer) | |
a1a0e61e TD |
98 | #endif |
99 | ||
79072805 | 100 | #include "keywords.h" |
fe14fcc3 | 101 | |
ffb4593c NT |
102 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
103 | ||
ae986130 LW |
104 | #ifdef CLINE |
105 | #undef CLINE | |
106 | #endif | |
57843af0 | 107 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 108 | |
ffb4593c NT |
109 | /* |
110 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 111 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
112 | * |
113 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
114 | * OPERATOR : generic operator | |
115 | * AOPERATOR : assignment operator | |
116 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
117 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
118 | * PREREF : *EXPR where EXPR is not a simple identifier | |
119 | * TERM : expression term | |
120 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
121 | * FTST : file test operator | |
122 | * FUN0 : zero-argument function | |
2d2e263d | 123 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
124 | * BOop : bitwise or or xor |
125 | * BAop : bitwise and | |
126 | * SHop : shift operator | |
127 | * PWop : power operator | |
9cbb5ea2 | 128 | * PMop : pattern-matching operator |
ffb4593c NT |
129 | * Aop : addition-level operator |
130 | * Mop : multiplication-level operator | |
131 | * Eop : equality-testing operator | |
132 | * Rop : relational operator <= != gt | |
133 | * | |
134 | * Also see LOP and lop() below. | |
135 | */ | |
136 | ||
3280af22 NIS |
137 | #define TOKEN(retval) return (PL_bufptr = s,(int)retval) |
138 | #define OPERATOR(retval) return (PL_expect = XTERM,PL_bufptr = s,(int)retval) | |
139 | #define AOPERATOR(retval) return ao((PL_expect = XTERM,PL_bufptr = s,(int)retval)) | |
140 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s,(int)retval) | |
141 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s,(int)retval) | |
142 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s,(int)retval) | |
143 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR,PL_bufptr = s,(int)retval) | |
144 | #define LOOPX(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LOOPEX) | |
145 | #define FTST(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)UNIOP) | |
146 | #define FUN0(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC0) | |
147 | #define FUN1(f) return(yylval.ival = f,PL_expect = XOPERATOR,PL_bufptr = s,(int)FUNC1) | |
148 | #define BOop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITOROP)) | |
149 | #define BAop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)BITANDOP)) | |
150 | #define SHop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)SHIFTOP)) | |
151 | #define PWop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)POWOP)) | |
152 | #define PMop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MATCHOP) | |
153 | #define Aop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)ADDOP)) | |
154 | #define Mop(f) return ao((yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)MULOP)) | |
155 | #define Eop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)EQOP) | |
156 | #define Rop(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)RELOP) | |
2f3197b3 | 157 | |
a687059c LW |
158 | /* This bit of chicanery makes a unary function followed by |
159 | * a parenthesis into a function with one argument, highest precedence. | |
160 | */ | |
2f3197b3 | 161 | #define UNI(f) return(yylval.ival = f, \ |
3280af22 NIS |
162 | PL_expect = XTERM, \ |
163 | PL_bufptr = s, \ | |
164 | PL_last_uni = PL_oldbufptr, \ | |
165 | PL_last_lop_op = f, \ | |
a687059c LW |
166 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
167 | ||
79072805 | 168 | #define UNIBRACK(f) return(yylval.ival = f, \ |
3280af22 NIS |
169 | PL_bufptr = s, \ |
170 | PL_last_uni = PL_oldbufptr, \ | |
79072805 LW |
171 | (*s == '(' || (s = skipspace(s), *s == '(') ? (int)FUNC1 : (int)UNIOP) ) |
172 | ||
9f68db38 | 173 | /* grandfather return to old style */ |
3280af22 | 174 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 175 | |
ffb4593c NT |
176 | /* |
177 | * S_ao | |
178 | * | |
179 | * This subroutine detects &&= and ||= and turns an ANDAND or OROR | |
180 | * into an OP_ANDASSIGN or OP_ORASSIGN | |
181 | */ | |
182 | ||
76e3520e | 183 | STATIC int |
cea2e8a9 | 184 | S_ao(pTHX_ int toketype) |
a0d0e21e | 185 | { |
3280af22 NIS |
186 | if (*PL_bufptr == '=') { |
187 | PL_bufptr++; | |
a0d0e21e LW |
188 | if (toketype == ANDAND) |
189 | yylval.ival = OP_ANDASSIGN; | |
190 | else if (toketype == OROR) | |
191 | yylval.ival = OP_ORASSIGN; | |
192 | toketype = ASSIGNOP; | |
193 | } | |
194 | return toketype; | |
195 | } | |
196 | ||
ffb4593c NT |
197 | /* |
198 | * S_no_op | |
199 | * When Perl expects an operator and finds something else, no_op | |
200 | * prints the warning. It always prints "<something> found where | |
201 | * operator expected. It prints "Missing semicolon on previous line?" | |
202 | * if the surprise occurs at the start of the line. "do you need to | |
203 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
204 | * where the compiler doesn't know if foo is a method call or a function. | |
205 | * It prints "Missing operator before end of line" if there's nothing | |
206 | * after the missing operator, or "... before <...>" if there is something | |
207 | * after the missing operator. | |
208 | */ | |
209 | ||
76e3520e | 210 | STATIC void |
cea2e8a9 | 211 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 212 | { |
3280af22 NIS |
213 | char *oldbp = PL_bufptr; |
214 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 215 | |
1189a94a GS |
216 | if (!s) |
217 | s = oldbp; | |
218 | else { | |
219 | assert(s >= oldbp); | |
220 | PL_bufptr = s; | |
221 | } | |
cea2e8a9 | 222 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
748a9306 | 223 | if (is_first) |
cea2e8a9 | 224 | Perl_warn(aTHX_ "\t(Missing semicolon on previous line?)\n"); |
834a4ddd | 225 | else if (PL_oldoldbufptr && isIDFIRST_lazy(PL_oldoldbufptr)) { |
748a9306 | 226 | char *t; |
834a4ddd | 227 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy(t) || *t == ':'); t++) ; |
3280af22 | 228 | if (t < PL_bufptr && isSPACE(*t)) |
cea2e8a9 | 229 | Perl_warn(aTHX_ "\t(Do you need to predeclare %.*s?)\n", |
3280af22 | 230 | t - PL_oldoldbufptr, PL_oldoldbufptr); |
748a9306 LW |
231 | } |
232 | else | |
cea2e8a9 | 233 | Perl_warn(aTHX_ "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); |
3280af22 | 234 | PL_bufptr = oldbp; |
8990e307 LW |
235 | } |
236 | ||
ffb4593c NT |
237 | /* |
238 | * S_missingterm | |
239 | * Complain about missing quote/regexp/heredoc terminator. | |
240 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
241 | * If we're in a delimited string and the delimiter is a control | |
242 | * character, it's reformatted into a two-char sequence like ^C. | |
243 | * This is fatal. | |
244 | */ | |
245 | ||
76e3520e | 246 | STATIC void |
cea2e8a9 | 247 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
248 | { |
249 | char tmpbuf[3]; | |
250 | char q; | |
251 | if (s) { | |
252 | char *nl = strrchr(s,'\n'); | |
d2719217 | 253 | if (nl) |
8990e307 LW |
254 | *nl = '\0'; |
255 | } | |
9d116dd7 JH |
256 | else if ( |
257 | #ifdef EBCDIC | |
258 | iscntrl(PL_multi_close) | |
259 | #else | |
260 | PL_multi_close < 32 || PL_multi_close == 127 | |
261 | #endif | |
262 | ) { | |
8990e307 | 263 | *tmpbuf = '^'; |
3280af22 | 264 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
265 | s = "\\n"; |
266 | tmpbuf[2] = '\0'; | |
267 | s = tmpbuf; | |
268 | } | |
269 | else { | |
3280af22 | 270 | *tmpbuf = PL_multi_close; |
8990e307 LW |
271 | tmpbuf[1] = '\0'; |
272 | s = tmpbuf; | |
273 | } | |
274 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 275 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 276 | } |
79072805 | 277 | |
ffb4593c NT |
278 | /* |
279 | * Perl_deprecate | |
ffb4593c NT |
280 | */ |
281 | ||
79072805 | 282 | void |
864dbfa3 | 283 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 284 | { |
d008e5eb | 285 | dTHR; |
599cee73 | 286 | if (ckWARN(WARN_DEPRECATED)) |
cea2e8a9 | 287 | Perl_warner(aTHX_ WARN_DEPRECATED, "Use of %s is deprecated", s); |
a0d0e21e LW |
288 | } |
289 | ||
ffb4593c NT |
290 | /* |
291 | * depcom | |
9cbb5ea2 | 292 | * Deprecate a comma-less variable list. |
ffb4593c NT |
293 | */ |
294 | ||
76e3520e | 295 | STATIC void |
cea2e8a9 | 296 | S_depcom(pTHX) |
a0d0e21e LW |
297 | { |
298 | deprecate("comma-less variable list"); | |
299 | } | |
300 | ||
ffb4593c | 301 | /* |
9cbb5ea2 GS |
302 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
303 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
304 | */ |
305 | ||
a868473f NIS |
306 | #ifdef WIN32 |
307 | ||
76e3520e | 308 | STATIC I32 |
cea2e8a9 | 309 | S_win32_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f NIS |
310 | { |
311 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
312 | if (count > 0 && !maxlen) | |
313 | win32_strip_return(sv); | |
314 | return count; | |
315 | } | |
316 | #endif | |
317 | ||
a0ed51b3 | 318 | STATIC I32 |
cea2e8a9 | 319 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
320 | { |
321 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
322 | if (count) { | |
dfe13c55 GS |
323 | U8* tmps; |
324 | U8* tend; | |
325 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 326 | tend = utf16_to_utf8((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 327 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
328 | |
329 | } | |
330 | return count; | |
331 | } | |
332 | ||
333 | STATIC I32 | |
cea2e8a9 | 334 | S_utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a0ed51b3 LW |
335 | { |
336 | I32 count = FILTER_READ(idx+1, sv, maxlen); | |
337 | if (count) { | |
dfe13c55 GS |
338 | U8* tmps; |
339 | U8* tend; | |
340 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); | |
a0ed51b3 | 341 | tend = utf16_to_utf8_reversed((U16*)SvPVX(sv), tmps, SvCUR(sv)); |
dfe13c55 | 342 | sv_usepvn(sv, (char*)tmps, tend - tmps); |
a0ed51b3 LW |
343 | |
344 | } | |
345 | return count; | |
346 | } | |
a868473f | 347 | |
ffb4593c NT |
348 | /* |
349 | * Perl_lex_start | |
9cbb5ea2 GS |
350 | * Initialize variables. Uses the Perl save_stack to save its state (for |
351 | * recursive calls to the parser). | |
ffb4593c NT |
352 | */ |
353 | ||
a0d0e21e | 354 | void |
864dbfa3 | 355 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 356 | { |
0f15f207 | 357 | dTHR; |
8990e307 LW |
358 | char *s; |
359 | STRLEN len; | |
360 | ||
3280af22 NIS |
361 | SAVEI32(PL_lex_dojoin); |
362 | SAVEI32(PL_lex_brackets); | |
363 | SAVEI32(PL_lex_fakebrack); | |
364 | SAVEI32(PL_lex_casemods); | |
365 | SAVEI32(PL_lex_starts); | |
366 | SAVEI32(PL_lex_state); | |
367 | SAVESPTR(PL_lex_inpat); | |
368 | SAVEI32(PL_lex_inwhat); | |
57843af0 | 369 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
370 | SAVEPPTR(PL_bufptr); |
371 | SAVEPPTR(PL_bufend); | |
372 | SAVEPPTR(PL_oldbufptr); | |
373 | SAVEPPTR(PL_oldoldbufptr); | |
374 | SAVEPPTR(PL_linestart); | |
375 | SAVESPTR(PL_linestr); | |
376 | SAVEPPTR(PL_lex_brackstack); | |
377 | SAVEPPTR(PL_lex_casestack); | |
c76ac1ee | 378 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
379 | SAVESPTR(PL_lex_stuff); |
380 | SAVEI32(PL_lex_defer); | |
09bef843 | 381 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 382 | SAVESPTR(PL_lex_repl); |
c76ac1ee GS |
383 | SAVEDESTRUCTOR_X(restore_expect, PL_tokenbuf + PL_expect); /* encode as pointer */ |
384 | SAVEDESTRUCTOR_X(restore_lex_expect, PL_tokenbuf + PL_expect); | |
3280af22 NIS |
385 | |
386 | PL_lex_state = LEX_NORMAL; | |
387 | PL_lex_defer = 0; | |
388 | PL_expect = XSTATE; | |
389 | PL_lex_brackets = 0; | |
390 | PL_lex_fakebrack = 0; | |
391 | New(899, PL_lex_brackstack, 120, char); | |
392 | New(899, PL_lex_casestack, 12, char); | |
393 | SAVEFREEPV(PL_lex_brackstack); | |
394 | SAVEFREEPV(PL_lex_casestack); | |
395 | PL_lex_casemods = 0; | |
396 | *PL_lex_casestack = '\0'; | |
397 | PL_lex_dojoin = 0; | |
398 | PL_lex_starts = 0; | |
399 | PL_lex_stuff = Nullsv; | |
400 | PL_lex_repl = Nullsv; | |
401 | PL_lex_inpat = 0; | |
402 | PL_lex_inwhat = 0; | |
09bef843 | 403 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
404 | PL_linestr = line; |
405 | if (SvREADONLY(PL_linestr)) | |
406 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
407 | s = SvPV(PL_linestr, len); | |
8990e307 | 408 | if (len && s[len-1] != ';') { |
3280af22 NIS |
409 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
410 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
411 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 412 | } |
3280af22 NIS |
413 | SvTEMP_off(PL_linestr); |
414 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
415 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
416 | SvREFCNT_dec(PL_rs); | |
79cb57f6 | 417 | PL_rs = newSVpvn("\n", 1); |
3280af22 | 418 | PL_rsfp = 0; |
79072805 | 419 | } |
a687059c | 420 | |
ffb4593c NT |
421 | /* |
422 | * Perl_lex_end | |
9cbb5ea2 GS |
423 | * Finalizer for lexing operations. Must be called when the parser is |
424 | * done with the lexer. | |
ffb4593c NT |
425 | */ |
426 | ||
463ee0b2 | 427 | void |
864dbfa3 | 428 | Perl_lex_end(pTHX) |
463ee0b2 | 429 | { |
3280af22 | 430 | PL_doextract = FALSE; |
463ee0b2 LW |
431 | } |
432 | ||
ffb4593c NT |
433 | /* |
434 | * S_incline | |
435 | * This subroutine has nothing to do with tilting, whether at windmills | |
436 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 437 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 438 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
439 | * # line 500 "foo.pm" |
440 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
441 | */ |
442 | ||
76e3520e | 443 | STATIC void |
cea2e8a9 | 444 | S_incline(pTHX_ char *s) |
463ee0b2 | 445 | { |
0f15f207 | 446 | dTHR; |
463ee0b2 LW |
447 | char *t; |
448 | char *n; | |
449 | char ch; | |
450 | int sawline = 0; | |
451 | ||
57843af0 | 452 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
453 | if (*s++ != '#') |
454 | return; | |
455 | while (*s == ' ' || *s == '\t') s++; | |
456 | if (strnEQ(s, "line ", 5)) { | |
457 | s += 5; | |
458 | sawline = 1; | |
459 | } | |
460 | if (!isDIGIT(*s)) | |
461 | return; | |
462 | n = s; | |
463 | while (isDIGIT(*s)) | |
464 | s++; | |
465 | while (*s == ' ' || *s == '\t') | |
466 | s++; | |
467 | if (*s == '"' && (t = strchr(s+1, '"'))) | |
468 | s++; | |
469 | else { | |
470 | if (!sawline) | |
471 | return; /* false alarm */ | |
472 | for (t = s; !isSPACE(*t); t++) ; | |
473 | } | |
474 | ch = *t; | |
475 | *t = '\0'; | |
476 | if (t - s > 0) | |
57843af0 | 477 | CopFILE_set(PL_curcop, s); |
463ee0b2 | 478 | else |
57843af0 | 479 | CopFILE_set(PL_curcop, PL_origfilename); |
463ee0b2 | 480 | *t = ch; |
57843af0 | 481 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
482 | } |
483 | ||
ffb4593c NT |
484 | /* |
485 | * S_skipspace | |
486 | * Called to gobble the appropriate amount and type of whitespace. | |
487 | * Skips comments as well. | |
488 | */ | |
489 | ||
76e3520e | 490 | STATIC char * |
cea2e8a9 | 491 | S_skipspace(pTHX_ register char *s) |
a687059c | 492 | { |
11343788 | 493 | dTHR; |
3280af22 NIS |
494 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
495 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
463ee0b2 LW |
496 | s++; |
497 | return s; | |
498 | } | |
499 | for (;;) { | |
fd049845 | 500 | STRLEN prevlen; |
09bef843 SB |
501 | SSize_t oldprevlen, oldoldprevlen; |
502 | SSize_t oldloplen, oldunilen; | |
60e6418e GS |
503 | while (s < PL_bufend && isSPACE(*s)) { |
504 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
505 | incline(s); | |
506 | } | |
ffb4593c NT |
507 | |
508 | /* comment */ | |
3280af22 NIS |
509 | if (s < PL_bufend && *s == '#') { |
510 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 511 | s++; |
60e6418e | 512 | if (s < PL_bufend) { |
463ee0b2 | 513 | s++; |
60e6418e GS |
514 | if (PL_in_eval && !PL_rsfp) { |
515 | incline(s); | |
516 | continue; | |
517 | } | |
518 | } | |
463ee0b2 | 519 | } |
ffb4593c NT |
520 | |
521 | /* only continue to recharge the buffer if we're at the end | |
522 | * of the buffer, we're not reading from a source filter, and | |
523 | * we're in normal lexing mode | |
524 | */ | |
09bef843 SB |
525 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
526 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 527 | return s; |
ffb4593c NT |
528 | |
529 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
530 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
531 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
532 | { | |
533 | /* end of file. Add on the -p or -n magic */ | |
3280af22 NIS |
534 | if (PL_minus_n || PL_minus_p) { |
535 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
536 | ";}continue{print or die qq(-p destination: $!\\n)" : |
537 | ""); | |
3280af22 NIS |
538 | sv_catpv(PL_linestr,";}"); |
539 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
540 | } |
541 | else | |
3280af22 | 542 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
543 | |
544 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
545 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
546 | = SvPVX(PL_linestr); | |
3280af22 | 547 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
ffb4593c NT |
548 | |
549 | /* Close the filehandle. Could be from -P preprocessor, | |
550 | * STDIN, or a regular file. If we were reading code from | |
551 | * STDIN (because the commandline held no -e or filename) | |
552 | * then we don't close it, we reset it so the code can | |
553 | * read from STDIN too. | |
554 | */ | |
555 | ||
3280af22 NIS |
556 | if (PL_preprocess && !PL_in_eval) |
557 | (void)PerlProc_pclose(PL_rsfp); | |
558 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
559 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 560 | else |
3280af22 NIS |
561 | (void)PerlIO_close(PL_rsfp); |
562 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
563 | return s; |
564 | } | |
ffb4593c NT |
565 | |
566 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
567 | /* make corresponding updates to old pointers, for yyerror() */ |
568 | oldprevlen = PL_oldbufptr - PL_bufend; | |
569 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
570 | if (PL_last_uni) | |
571 | oldunilen = PL_last_uni - PL_bufend; | |
572 | if (PL_last_lop) | |
573 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
574 | PL_linestart = PL_bufptr = s + prevlen; |
575 | PL_bufend = s + SvCUR(PL_linestr); | |
576 | s = PL_bufptr; | |
09bef843 SB |
577 | PL_oldbufptr = s + oldprevlen; |
578 | PL_oldoldbufptr = s + oldoldprevlen; | |
579 | if (PL_last_uni) | |
580 | PL_last_uni = s + oldunilen; | |
581 | if (PL_last_lop) | |
582 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 583 | incline(s); |
ffb4593c NT |
584 | |
585 | /* debugger active and we're not compiling the debugger code, | |
586 | * so store the line into the debugger's array of lines | |
587 | */ | |
3280af22 | 588 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
589 | SV *sv = NEWSV(85,0); |
590 | ||
591 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 592 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
57843af0 | 593 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 594 | } |
463ee0b2 | 595 | } |
a687059c | 596 | } |
378cc40b | 597 | |
ffb4593c NT |
598 | /* |
599 | * S_check_uni | |
600 | * Check the unary operators to ensure there's no ambiguity in how they're | |
601 | * used. An ambiguous piece of code would be: | |
602 | * rand + 5 | |
603 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
604 | * the +5 is its argument. | |
605 | */ | |
606 | ||
76e3520e | 607 | STATIC void |
cea2e8a9 | 608 | S_check_uni(pTHX) |
ba106d47 | 609 | { |
2f3197b3 | 610 | char *s; |
a0d0e21e | 611 | char *t; |
0453d815 | 612 | dTHR; |
2f3197b3 | 613 | |
3280af22 | 614 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 615 | return; |
3280af22 NIS |
616 | while (isSPACE(*PL_last_uni)) |
617 | PL_last_uni++; | |
834a4ddd | 618 | for (s = PL_last_uni; isALNUM_lazy(s) || *s == '-'; s++) ; |
3280af22 | 619 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 620 | return; |
0453d815 | 621 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 622 | char ch = *s; |
0453d815 PM |
623 | *s = '\0'; |
624 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
625 | "Warning: Use of \"%s\" without parens is ambiguous", | |
626 | PL_last_uni); | |
627 | *s = ch; | |
628 | } | |
2f3197b3 LW |
629 | } |
630 | ||
ffb4593c NT |
631 | /* workaround to replace the UNI() macro with a function. Only the |
632 | * hints/uts.sh file mentions this. Other comments elsewhere in the | |
633 | * source indicate Microport Unix might need it too. | |
634 | */ | |
635 | ||
ffed7fef LW |
636 | #ifdef CRIPPLED_CC |
637 | ||
638 | #undef UNI | |
ffed7fef | 639 | #define UNI(f) return uni(f,s) |
ffed7fef | 640 | |
76e3520e | 641 | STATIC int |
cea2e8a9 | 642 | S_uni(pTHX_ I32 f, char *s) |
ffed7fef LW |
643 | { |
644 | yylval.ival = f; | |
3280af22 NIS |
645 | PL_expect = XTERM; |
646 | PL_bufptr = s; | |
8f872242 NIS |
647 | PL_last_uni = PL_oldbufptr; |
648 | PL_last_lop_op = f; | |
ffed7fef LW |
649 | if (*s == '(') |
650 | return FUNC1; | |
651 | s = skipspace(s); | |
652 | if (*s == '(') | |
653 | return FUNC1; | |
654 | else | |
655 | return UNIOP; | |
656 | } | |
657 | ||
a0d0e21e LW |
658 | #endif /* CRIPPLED_CC */ |
659 | ||
ffb4593c NT |
660 | /* |
661 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
662 | * with a subroutine, S_lop() for which LOP is just another name. | |
663 | */ | |
664 | ||
a0d0e21e LW |
665 | #define LOP(f,x) return lop(f,x,s) |
666 | ||
ffb4593c NT |
667 | /* |
668 | * S_lop | |
669 | * Build a list operator (or something that might be one). The rules: | |
670 | * - if we have a next token, then it's a list operator [why?] | |
671 | * - if the next thing is an opening paren, then it's a function | |
672 | * - else it's a list operator | |
673 | */ | |
674 | ||
76e3520e | 675 | STATIC I32 |
cea2e8a9 | 676 | S_lop(pTHX_ I32 f, expectation x, char *s) |
ffed7fef | 677 | { |
0f15f207 | 678 | dTHR; |
79072805 | 679 | yylval.ival = f; |
35c8bce7 | 680 | CLINE; |
3280af22 NIS |
681 | PL_expect = x; |
682 | PL_bufptr = s; | |
683 | PL_last_lop = PL_oldbufptr; | |
684 | PL_last_lop_op = f; | |
685 | if (PL_nexttoke) | |
a0d0e21e | 686 | return LSTOP; |
79072805 LW |
687 | if (*s == '(') |
688 | return FUNC; | |
689 | s = skipspace(s); | |
690 | if (*s == '(') | |
691 | return FUNC; | |
692 | else | |
693 | return LSTOP; | |
694 | } | |
695 | ||
ffb4593c NT |
696 | /* |
697 | * S_force_next | |
9cbb5ea2 | 698 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 699 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
700 | * to know what token to return the next time the lexer is called. Caller |
701 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
702 | * handles the token correctly. | |
ffb4593c NT |
703 | */ |
704 | ||
76e3520e | 705 | STATIC void |
cea2e8a9 | 706 | S_force_next(pTHX_ I32 type) |
79072805 | 707 | { |
3280af22 NIS |
708 | PL_nexttype[PL_nexttoke] = type; |
709 | PL_nexttoke++; | |
710 | if (PL_lex_state != LEX_KNOWNEXT) { | |
711 | PL_lex_defer = PL_lex_state; | |
712 | PL_lex_expect = PL_expect; | |
713 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
714 | } |
715 | } | |
716 | ||
ffb4593c NT |
717 | /* |
718 | * S_force_word | |
719 | * When the lexer knows the next thing is a word (for instance, it has | |
720 | * just seen -> and it knows that the next char is a word char, then | |
721 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
722 | * | |
723 | * Arguments: | |
b1b65b59 | 724 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
725 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
726 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
727 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
728 | * int allow_pack : if true, : characters will also be allowed (require, | |
729 | * use, etc. do this) | |
9cbb5ea2 | 730 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
731 | */ |
732 | ||
76e3520e | 733 | STATIC char * |
cea2e8a9 | 734 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 735 | { |
463ee0b2 LW |
736 | register char *s; |
737 | STRLEN len; | |
738 | ||
739 | start = skipspace(start); | |
740 | s = start; | |
834a4ddd | 741 | if (isIDFIRST_lazy(s) || |
a0d0e21e | 742 | (allow_pack && *s == ':') || |
15f0808c | 743 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 744 | { |
3280af22 NIS |
745 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
746 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
747 | return start; |
748 | if (token == METHOD) { | |
749 | s = skipspace(s); | |
750 | if (*s == '(') | |
3280af22 | 751 | PL_expect = XTERM; |
463ee0b2 | 752 | else { |
3280af22 | 753 | PL_expect = XOPERATOR; |
463ee0b2 | 754 | } |
79072805 | 755 | } |
3280af22 NIS |
756 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
757 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
79072805 LW |
758 | force_next(token); |
759 | } | |
760 | return s; | |
761 | } | |
762 | ||
ffb4593c NT |
763 | /* |
764 | * S_force_ident | |
9cbb5ea2 | 765 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
766 | * text only contains the "foo" portion. The first argument is a pointer |
767 | * to the "foo", and the second argument is the type symbol to prefix. | |
768 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 769 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
770 | */ |
771 | ||
76e3520e | 772 | STATIC void |
cea2e8a9 | 773 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
774 | { |
775 | if (s && *s) { | |
11343788 | 776 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 777 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 778 | force_next(WORD); |
748a9306 | 779 | if (kind) { |
e858de61 | 780 | dTHR; /* just for in_eval */ |
11343788 | 781 | o->op_private = OPpCONST_ENTERED; |
55497cff | 782 | /* XXX see note in pp_entereval() for why we forgo typo |
783 | warnings if the symbol must be introduced in an eval. | |
784 | GSAR 96-10-12 */ | |
3280af22 | 785 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
786 | kind == '$' ? SVt_PV : |
787 | kind == '@' ? SVt_PVAV : | |
788 | kind == '%' ? SVt_PVHV : | |
789 | SVt_PVGV | |
790 | ); | |
748a9306 | 791 | } |
79072805 LW |
792 | } |
793 | } | |
794 | ||
ffb4593c NT |
795 | /* |
796 | * S_force_version | |
797 | * Forces the next token to be a version number. | |
798 | */ | |
799 | ||
76e3520e | 800 | STATIC char * |
cea2e8a9 | 801 | S_force_version(pTHX_ char *s) |
89bfa8cd | 802 | { |
803 | OP *version = Nullop; | |
804 | ||
805 | s = skipspace(s); | |
806 | ||
807 | /* default VERSION number -- GBARR */ | |
808 | ||
809 | if(isDIGIT(*s)) { | |
810 | char *d; | |
811 | int c; | |
55497cff | 812 | for( d=s, c = 1; isDIGIT(*d) || *d == '_' || (*d == '.' && c--); d++); |
89bfa8cd | 813 | if((*d == ';' || isSPACE(*d)) && *(skipspace(d)) != ',') { |
814 | s = scan_num(s); | |
815 | /* real VERSION number -- GBARR */ | |
816 | version = yylval.opval; | |
817 | } | |
818 | } | |
819 | ||
820 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 821 | PL_nextval[PL_nexttoke].opval = version; |
89bfa8cd | 822 | force_next(WORD); |
823 | ||
824 | return (s); | |
825 | } | |
826 | ||
ffb4593c NT |
827 | /* |
828 | * S_tokeq | |
829 | * Tokenize a quoted string passed in as an SV. It finds the next | |
830 | * chunk, up to end of string or a backslash. It may make a new | |
831 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
832 | * turns \\ into \. | |
833 | */ | |
834 | ||
76e3520e | 835 | STATIC SV * |
cea2e8a9 | 836 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
837 | { |
838 | register char *s; | |
839 | register char *send; | |
840 | register char *d; | |
b3ac6de7 IZ |
841 | STRLEN len = 0; |
842 | SV *pv = sv; | |
79072805 LW |
843 | |
844 | if (!SvLEN(sv)) | |
b3ac6de7 | 845 | goto finish; |
79072805 | 846 | |
a0d0e21e | 847 | s = SvPV_force(sv, len); |
748a9306 | 848 | if (SvIVX(sv) == -1) |
b3ac6de7 | 849 | goto finish; |
463ee0b2 | 850 | send = s + len; |
79072805 LW |
851 | while (s < send && *s != '\\') |
852 | s++; | |
853 | if (s == send) | |
b3ac6de7 | 854 | goto finish; |
79072805 | 855 | d = s; |
3280af22 | 856 | if ( PL_hints & HINT_NEW_STRING ) |
79cb57f6 | 857 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
79072805 LW |
858 | while (s < send) { |
859 | if (*s == '\\') { | |
a0d0e21e | 860 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
861 | s++; /* all that, just for this */ |
862 | } | |
863 | *d++ = *s++; | |
864 | } | |
865 | *d = '\0'; | |
463ee0b2 | 866 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 867 | finish: |
3280af22 | 868 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 869 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
870 | return sv; |
871 | } | |
872 | ||
ffb4593c NT |
873 | /* |
874 | * Now come three functions related to double-quote context, | |
875 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
876 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
877 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
878 | * to handle functions and concatenation. | |
879 | * They assume that whoever calls them will be setting up a fake | |
880 | * join call, because each subthing puts a ',' after it. This lets | |
881 | * "lower \luPpEr" | |
882 | * become | |
883 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
884 | * | |
885 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
886 | * arguments and join's arguments are created or not). | |
887 | */ | |
888 | ||
889 | /* | |
890 | * S_sublex_start | |
891 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
892 | * | |
893 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
894 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
895 | * | |
896 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
897 | * | |
898 | * Everything else becomes a FUNC. | |
899 | * | |
900 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
901 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
902 | * call to S_sublex_push(). | |
903 | */ | |
904 | ||
76e3520e | 905 | STATIC I32 |
cea2e8a9 | 906 | S_sublex_start(pTHX) |
79072805 LW |
907 | { |
908 | register I32 op_type = yylval.ival; | |
79072805 LW |
909 | |
910 | if (op_type == OP_NULL) { | |
3280af22 NIS |
911 | yylval.opval = PL_lex_op; |
912 | PL_lex_op = Nullop; | |
79072805 LW |
913 | return THING; |
914 | } | |
915 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 916 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
917 | |
918 | if (SvTYPE(sv) == SVt_PVIV) { | |
919 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
920 | STRLEN len; | |
921 | char *p; | |
922 | SV *nsv; | |
923 | ||
924 | p = SvPV(sv, len); | |
79cb57f6 | 925 | nsv = newSVpvn(p, len); |
b3ac6de7 IZ |
926 | SvREFCNT_dec(sv); |
927 | sv = nsv; | |
928 | } | |
929 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); | |
3280af22 | 930 | PL_lex_stuff = Nullsv; |
79072805 LW |
931 | return THING; |
932 | } | |
933 | ||
3280af22 NIS |
934 | PL_sublex_info.super_state = PL_lex_state; |
935 | PL_sublex_info.sub_inwhat = op_type; | |
936 | PL_sublex_info.sub_op = PL_lex_op; | |
937 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 938 | |
3280af22 NIS |
939 | PL_expect = XTERM; |
940 | if (PL_lex_op) { | |
941 | yylval.opval = PL_lex_op; | |
942 | PL_lex_op = Nullop; | |
55497cff | 943 | return PMFUNC; |
944 | } | |
945 | else | |
946 | return FUNC; | |
947 | } | |
948 | ||
ffb4593c NT |
949 | /* |
950 | * S_sublex_push | |
951 | * Create a new scope to save the lexing state. The scope will be | |
952 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
953 | * to the uc, lc, etc. found before. | |
954 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
955 | */ | |
956 | ||
76e3520e | 957 | STATIC I32 |
cea2e8a9 | 958 | S_sublex_push(pTHX) |
55497cff | 959 | { |
0f15f207 | 960 | dTHR; |
f46d017c | 961 | ENTER; |
55497cff | 962 | |
3280af22 NIS |
963 | PL_lex_state = PL_sublex_info.super_state; |
964 | SAVEI32(PL_lex_dojoin); | |
965 | SAVEI32(PL_lex_brackets); | |
966 | SAVEI32(PL_lex_fakebrack); | |
967 | SAVEI32(PL_lex_casemods); | |
968 | SAVEI32(PL_lex_starts); | |
969 | SAVEI32(PL_lex_state); | |
970 | SAVESPTR(PL_lex_inpat); | |
971 | SAVEI32(PL_lex_inwhat); | |
57843af0 | 972 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
973 | SAVEPPTR(PL_bufptr); |
974 | SAVEPPTR(PL_oldbufptr); | |
975 | SAVEPPTR(PL_oldoldbufptr); | |
976 | SAVEPPTR(PL_linestart); | |
977 | SAVESPTR(PL_linestr); | |
978 | SAVEPPTR(PL_lex_brackstack); | |
979 | SAVEPPTR(PL_lex_casestack); | |
980 | ||
981 | PL_linestr = PL_lex_stuff; | |
982 | PL_lex_stuff = Nullsv; | |
983 | ||
9cbb5ea2 GS |
984 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
985 | = SvPVX(PL_linestr); | |
3280af22 NIS |
986 | PL_bufend += SvCUR(PL_linestr); |
987 | SAVEFREESV(PL_linestr); | |
988 | ||
989 | PL_lex_dojoin = FALSE; | |
990 | PL_lex_brackets = 0; | |
991 | PL_lex_fakebrack = 0; | |
992 | New(899, PL_lex_brackstack, 120, char); | |
993 | New(899, PL_lex_casestack, 12, char); | |
994 | SAVEFREEPV(PL_lex_brackstack); | |
995 | SAVEFREEPV(PL_lex_casestack); | |
996 | PL_lex_casemods = 0; | |
997 | *PL_lex_casestack = '\0'; | |
998 | PL_lex_starts = 0; | |
999 | PL_lex_state = LEX_INTERPCONCAT; | |
57843af0 | 1000 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 NIS |
1001 | |
1002 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1003 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1004 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1005 | else |
3280af22 | 1006 | PL_lex_inpat = Nullop; |
79072805 | 1007 | |
55497cff | 1008 | return '('; |
79072805 LW |
1009 | } |
1010 | ||
ffb4593c NT |
1011 | /* |
1012 | * S_sublex_done | |
1013 | * Restores lexer state after a S_sublex_push. | |
1014 | */ | |
1015 | ||
76e3520e | 1016 | STATIC I32 |
cea2e8a9 | 1017 | S_sublex_done(pTHX) |
79072805 | 1018 | { |
3280af22 NIS |
1019 | if (!PL_lex_starts++) { |
1020 | PL_expect = XOPERATOR; | |
79cb57f6 | 1021 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpvn("",0)); |
79072805 LW |
1022 | return THING; |
1023 | } | |
1024 | ||
3280af22 NIS |
1025 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1026 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1027 | return yylex(); |
79072805 LW |
1028 | } |
1029 | ||
ffb4593c | 1030 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1031 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1032 | PL_linestr = PL_lex_repl; | |
1033 | PL_lex_inpat = 0; | |
1034 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1035 | PL_bufend += SvCUR(PL_linestr); | |
1036 | SAVEFREESV(PL_linestr); | |
1037 | PL_lex_dojoin = FALSE; | |
1038 | PL_lex_brackets = 0; | |
1039 | PL_lex_fakebrack = 0; | |
1040 | PL_lex_casemods = 0; | |
1041 | *PL_lex_casestack = '\0'; | |
1042 | PL_lex_starts = 0; | |
25da4f38 | 1043 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1044 | PL_lex_state = LEX_INTERPNORMAL; |
1045 | PL_lex_starts++; | |
e9fa98b2 HS |
1046 | /* we don't clear PL_lex_repl here, so that we can check later |
1047 | whether this is an evalled subst; that means we rely on the | |
1048 | logic to ensure sublex_done() is called again only via the | |
1049 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1050 | } |
e9fa98b2 | 1051 | else { |
3280af22 | 1052 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1053 | PL_lex_repl = Nullsv; |
1054 | } | |
79072805 | 1055 | return ','; |
ffed7fef LW |
1056 | } |
1057 | else { | |
f46d017c | 1058 | LEAVE; |
3280af22 NIS |
1059 | PL_bufend = SvPVX(PL_linestr); |
1060 | PL_bufend += SvCUR(PL_linestr); | |
1061 | PL_expect = XOPERATOR; | |
09bef843 | 1062 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1063 | return ')'; |
ffed7fef LW |
1064 | } |
1065 | } | |
1066 | ||
02aa26ce NT |
1067 | /* |
1068 | scan_const | |
1069 | ||
1070 | Extracts a pattern, double-quoted string, or transliteration. This | |
1071 | is terrifying code. | |
1072 | ||
3280af22 NIS |
1073 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1074 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1075 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1076 | ||
9b599b2a GS |
1077 | Returns a pointer to the character scanned up to. Iff this is |
1078 | advanced from the start pointer supplied (ie if anything was | |
1079 | successfully parsed), will leave an OP for the substring scanned | |
1080 | in yylval. Caller must intuit reason for not parsing further | |
1081 | by looking at the next characters herself. | |
1082 | ||
02aa26ce NT |
1083 | In patterns: |
1084 | backslashes: | |
1085 | double-quoted style: \r and \n | |
1086 | regexp special ones: \D \s | |
1087 | constants: \x3 | |
1088 | backrefs: \1 (deprecated in substitution replacements) | |
1089 | case and quoting: \U \Q \E | |
1090 | stops on @ and $, but not for $ as tail anchor | |
1091 | ||
1092 | In transliterations: | |
1093 | characters are VERY literal, except for - not at the start or end | |
1094 | of the string, which indicates a range. scan_const expands the | |
1095 | range to the full set of intermediate characters. | |
1096 | ||
1097 | In double-quoted strings: | |
1098 | backslashes: | |
1099 | double-quoted style: \r and \n | |
1100 | constants: \x3 | |
1101 | backrefs: \1 (deprecated) | |
1102 | case and quoting: \U \Q \E | |
1103 | stops on @ and $ | |
1104 | ||
1105 | scan_const does *not* construct ops to handle interpolated strings. | |
1106 | It stops processing as soon as it finds an embedded $ or @ variable | |
1107 | and leaves it to the caller to work out what's going on. | |
1108 | ||
1109 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @:foo. | |
1110 | ||
1111 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1112 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1113 | followed by one of ")| \n\t" | |
1114 | ||
1115 | \1 (backreferences) are turned into $1 | |
1116 | ||
1117 | The structure of the code is | |
1118 | while (there's a character to process) { | |
1119 | handle transliteration ranges | |
1120 | skip regexp comments | |
1121 | skip # initiated comments in //x patterns | |
1122 | check for embedded @foo | |
1123 | check for embedded scalars | |
1124 | if (backslash) { | |
1125 | leave intact backslashes from leave (below) | |
1126 | deprecate \1 in strings and sub replacements | |
1127 | handle string-changing backslashes \l \U \Q \E, etc. | |
1128 | switch (what was escaped) { | |
1129 | handle - in a transliteration (becomes a literal -) | |
1130 | handle \132 octal characters | |
1131 | handle 0x15 hex characters | |
1132 | handle \cV (control V) | |
1133 | handle printf backslashes (\f, \r, \n, etc) | |
1134 | } (end switch) | |
1135 | } (end if backslash) | |
1136 | } (end while character to read) | |
1137 | ||
1138 | */ | |
1139 | ||
76e3520e | 1140 | STATIC char * |
cea2e8a9 | 1141 | S_scan_const(pTHX_ char *start) |
79072805 | 1142 | { |
3280af22 | 1143 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1144 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1145 | register char *s = start; /* start of the constant */ | |
1146 | register char *d = SvPVX(sv); /* destination for copies */ | |
1147 | bool dorange = FALSE; /* are we in a translit range? */ | |
1148 | I32 len; /* ? */ | |
ac2262e3 | 1149 | I32 utf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
a0ed51b3 LW |
1150 | ? (PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) |
1151 | : UTF; | |
ac2262e3 | 1152 | I32 thisutf = (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) |
9cbb5ea2 GS |
1153 | ? (PL_sublex_info.sub_op->op_private & (PL_lex_repl ? |
1154 | OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF)) | |
a0ed51b3 | 1155 | : UTF; |
dff6d3cd | 1156 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1157 | PL_lex_inpat |
4a2d328f | 1158 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxcz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1159 | : ""; |
79072805 LW |
1160 | |
1161 | while (s < send || dorange) { | |
02aa26ce | 1162 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1163 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1164 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1165 | if (dorange) { |
02aa26ce | 1166 | I32 i; /* current expanded character */ |
8ada0baa | 1167 | I32 min; /* first character in range */ |
02aa26ce NT |
1168 | I32 max; /* last character in range */ |
1169 | ||
1170 | i = d - SvPVX(sv); /* remember current offset */ | |
9cbb5ea2 GS |
1171 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1172 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1173 | d -= 2; /* eat the first char and the - */ |
1174 | ||
8ada0baa JH |
1175 | min = (U8)*d; /* first char in range */ |
1176 | max = (U8)d[1]; /* last char in range */ | |
1177 | ||
1178 | #ifndef ASCIIish | |
1179 | if ((isLOWER(min) && isLOWER(max)) || | |
1180 | (isUPPER(min) && isUPPER(max))) { | |
1181 | if (isLOWER(min)) { | |
1182 | for (i = min; i <= max; i++) | |
1183 | if (isLOWER(i)) | |
1184 | *d++ = i; | |
1185 | } else { | |
1186 | for (i = min; i <= max; i++) | |
1187 | if (isUPPER(i)) | |
1188 | *d++ = i; | |
1189 | } | |
1190 | } | |
1191 | else | |
1192 | #endif | |
1193 | for (i = min; i <= max; i++) | |
1194 | *d++ = i; | |
02aa26ce NT |
1195 | |
1196 | /* mark the range as done, and continue */ | |
79072805 LW |
1197 | dorange = FALSE; |
1198 | continue; | |
1199 | } | |
02aa26ce NT |
1200 | |
1201 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1202 | else if (*s == '-' && s+1 < send && s != start) { |
a0ed51b3 | 1203 | if (utf) { |
a176fa2a | 1204 | *d++ = (char)0xff; /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1205 | s++; |
1206 | continue; | |
1207 | } | |
79072805 LW |
1208 | dorange = TRUE; |
1209 | s++; | |
1210 | } | |
1211 | } | |
02aa26ce NT |
1212 | |
1213 | /* if we get here, we're not doing a transliteration */ | |
1214 | ||
0f5d15d6 IZ |
1215 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1216 | except for the last char, which will be done separately. */ | |
3280af22 | 1217 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 IZ |
1218 | if (s[2] == '#') { |
1219 | while (s < send && *s != ')') | |
1220 | *d++ = *s++; | |
0f5d15d6 IZ |
1221 | } else if (s[2] == '{' |
1222 | || s[2] == 'p' && s[3] == '{') { /* This should march regcomp.c */ | |
cc6b7395 | 1223 | I32 count = 1; |
0f5d15d6 | 1224 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1225 | char c; |
1226 | ||
d9f97599 GS |
1227 | while (count && (c = *regparse)) { |
1228 | if (c == '\\' && regparse[1]) | |
1229 | regparse++; | |
cc6b7395 IZ |
1230 | else if (c == '{') |
1231 | count++; | |
1232 | else if (c == '}') | |
1233 | count--; | |
d9f97599 | 1234 | regparse++; |
cc6b7395 | 1235 | } |
5bdf89e7 IZ |
1236 | if (*regparse != ')') { |
1237 | regparse--; /* Leave one char for continuation. */ | |
cc6b7395 | 1238 | yyerror("Sequence (?{...}) not terminated or not {}-balanced"); |
5bdf89e7 | 1239 | } |
0f5d15d6 | 1240 | while (s < regparse) |
cc6b7395 IZ |
1241 | *d++ = *s++; |
1242 | } | |
748a9306 | 1243 | } |
02aa26ce NT |
1244 | |
1245 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1246 | else if (*s == '#' && PL_lex_inpat && |
1247 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 LW |
1248 | while (s+1 < send && *s != '\n') |
1249 | *d++ = *s++; | |
1250 | } | |
02aa26ce NT |
1251 | |
1252 | /* check for embedded arrays (@foo, @:foo, @'foo, @{foo}, @$foo) */ | |
834a4ddd | 1253 | else if (*s == '@' && s[1] && (isALNUM_lazy(s+1) || strchr(":'{$", s[1]))) |
79072805 | 1254 | break; |
02aa26ce NT |
1255 | |
1256 | /* check for embedded scalars. only stop if we're sure it's a | |
1257 | variable. | |
1258 | */ | |
79072805 | 1259 | else if (*s == '$') { |
3280af22 | 1260 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1261 | break; |
c277df42 | 1262 | if (s + 1 < send && !strchr("()| \n\t", s[1])) |
79072805 LW |
1263 | break; /* in regexp, $ might be tail anchor */ |
1264 | } | |
02aa26ce | 1265 | |
a0ed51b3 LW |
1266 | /* (now in tr/// code again) */ |
1267 | ||
d008e5eb GS |
1268 | if (*s & 0x80 && thisutf) { |
1269 | dTHR; /* only for ckWARN */ | |
1270 | if (ckWARN(WARN_UTF8)) { | |
dfe13c55 | 1271 | (void)utf8_to_uv((U8*)s, &len); /* could cvt latin-1 to utf8 here... */ |
d008e5eb GS |
1272 | if (len) { |
1273 | while (len--) | |
1274 | *d++ = *s++; | |
1275 | continue; | |
1276 | } | |
a0ed51b3 LW |
1277 | } |
1278 | } | |
1279 | ||
02aa26ce | 1280 | /* backslashes */ |
79072805 LW |
1281 | if (*s == '\\' && s+1 < send) { |
1282 | s++; | |
02aa26ce NT |
1283 | |
1284 | /* some backslashes we leave behind */ | |
c9f97d15 | 1285 | if (*leaveit && *s && strchr(leaveit, *s)) { |
79072805 LW |
1286 | *d++ = '\\'; |
1287 | *d++ = *s++; | |
1288 | continue; | |
1289 | } | |
02aa26ce NT |
1290 | |
1291 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1292 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1293 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1294 | { |
d008e5eb | 1295 | dTHR; /* only for ckWARN */ |
599cee73 | 1296 | if (ckWARN(WARN_SYNTAX)) |
cea2e8a9 | 1297 | Perl_warner(aTHX_ WARN_SYNTAX, "\\%c better written as $%c", *s, *s); |
79072805 LW |
1298 | *--s = '$'; |
1299 | break; | |
1300 | } | |
02aa26ce NT |
1301 | |
1302 | /* string-change backslash escapes */ | |
3280af22 | 1303 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1304 | --s; |
1305 | break; | |
1306 | } | |
02aa26ce NT |
1307 | |
1308 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1309 | switch (*s) { |
02aa26ce NT |
1310 | |
1311 | /* quoted - in transliterations */ | |
79072805 | 1312 | case '-': |
3280af22 | 1313 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1314 | *d++ = *s++; |
1315 | continue; | |
1316 | } | |
1317 | /* FALL THROUGH */ | |
1318 | default: | |
11b8faa4 JH |
1319 | { |
1320 | dTHR; | |
1321 | if (ckWARN(WARN_UNSAFE) && isALPHA(*s)) | |
cea2e8a9 | 1322 | Perl_warner(aTHX_ WARN_UNSAFE, |
11b8faa4 JH |
1323 | "Unrecognized escape \\%c passed through", |
1324 | *s); | |
1325 | /* default action is to copy the quoted character */ | |
1326 | *d++ = *s++; | |
1327 | continue; | |
1328 | } | |
02aa26ce NT |
1329 | |
1330 | /* \132 indicates an octal constant */ | |
79072805 LW |
1331 | case '0': case '1': case '2': case '3': |
1332 | case '4': case '5': case '6': case '7': | |
dff6d3cd | 1333 | *d++ = (char)scan_oct(s, 3, &len); |
79072805 LW |
1334 | s += len; |
1335 | continue; | |
02aa26ce NT |
1336 | |
1337 | /* \x24 indicates a hex constant */ | |
79072805 | 1338 | case 'x': |
a0ed51b3 LW |
1339 | ++s; |
1340 | if (*s == '{') { | |
1341 | char* e = strchr(s, '}'); | |
1342 | ||
adaeee49 | 1343 | if (!e) { |
a0ed51b3 | 1344 | yyerror("Missing right brace on \\x{}"); |
adaeee49 GA |
1345 | e = s; |
1346 | } | |
d008e5eb GS |
1347 | if (!utf) { |
1348 | dTHR; | |
1349 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1350 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1351 | "Use of \\x{} without utf8 declaration"); |
1352 | } | |
a0ed51b3 | 1353 | /* note: utf always shorter than hex */ |
dfe13c55 | 1354 | d = (char*)uv_to_utf8((U8*)d, |
dff6d3cd | 1355 | (UV)scan_hex(s + 1, e - s - 1, &len)); |
a0ed51b3 | 1356 | s = e + 1; |
a0ed51b3 LW |
1357 | } |
1358 | else { | |
1359 | UV uv = (UV)scan_hex(s, 2, &len); | |
1360 | if (utf && PL_lex_inwhat == OP_TRANS && | |
1361 | utf != (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF)) | |
1362 | { | |
dfe13c55 | 1363 | d = (char*)uv_to_utf8((U8*)d, uv); /* doing a CU or UC */ |
a0ed51b3 LW |
1364 | } |
1365 | else { | |
d008e5eb GS |
1366 | if (uv >= 127 && UTF) { |
1367 | dTHR; | |
1368 | if (ckWARN(WARN_UTF8)) | |
cea2e8a9 | 1369 | Perl_warner(aTHX_ WARN_UTF8, |
d008e5eb GS |
1370 | "\\x%.*s will produce malformed UTF-8 character; use \\x{%.*s} for that", |
1371 | len,s,len,s); | |
1372 | } | |
a0ed51b3 LW |
1373 | *d++ = (char)uv; |
1374 | } | |
1375 | s += len; | |
1376 | } | |
79072805 | 1377 | continue; |
02aa26ce | 1378 | |
4a2d328f IZ |
1379 | /* \N{latin small letter a} is a named character */ |
1380 | case 'N': | |
423cee85 JH |
1381 | ++s; |
1382 | if (*s == '{') { | |
1383 | char* e = strchr(s, '}'); | |
1384 | HV *hv; | |
1385 | SV **svp; | |
1386 | SV *res, *cv; | |
1387 | STRLEN len; | |
1388 | char *str; | |
1389 | char *why = Nullch; | |
1390 | ||
1391 | if (!e) { | |
5777a3f7 | 1392 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1393 | e = s - 1; |
1394 | goto cont_scan; | |
1395 | } | |
1396 | res = newSVpvn(s + 1, e - s - 1); | |
1397 | res = new_constant( Nullch, 0, "charnames", | |
5777a3f7 | 1398 | res, Nullsv, "\\N{...}" ); |
423cee85 JH |
1399 | str = SvPV(res,len); |
1400 | if (len > e - s + 4) { | |
1401 | char *odest = SvPVX(sv); | |
1402 | ||
1403 | SvGROW(sv, (SvCUR(sv) + len - (e - s + 4))); | |
1404 | d = SvPVX(sv) + (d - odest); | |
1405 | } | |
1406 | Copy(str, d, len, char); | |
1407 | d += len; | |
1408 | SvREFCNT_dec(res); | |
1409 | cont_scan: | |
1410 | s = e + 1; | |
1411 | } | |
1412 | else | |
5777a3f7 | 1413 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1414 | continue; |
1415 | ||
02aa26ce | 1416 | /* \c is a control character */ |
79072805 LW |
1417 | case 'c': |
1418 | s++; | |
9d116dd7 JH |
1419 | #ifdef EBCDIC |
1420 | *d = *s++; | |
1421 | if (isLOWER(*d)) | |
1422 | *d = toUPPER(*d); | |
1423 | *d++ = toCTRL(*d); | |
1424 | #else | |
bbce6d69 | 1425 | len = *s++; |
1426 | *d++ = toCTRL(len); | |
9d116dd7 | 1427 | #endif |
79072805 | 1428 | continue; |
02aa26ce NT |
1429 | |
1430 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 LW |
1431 | case 'b': |
1432 | *d++ = '\b'; | |
1433 | break; | |
1434 | case 'n': | |
1435 | *d++ = '\n'; | |
1436 | break; | |
1437 | case 'r': | |
1438 | *d++ = '\r'; | |
1439 | break; | |
1440 | case 'f': | |
1441 | *d++ = '\f'; | |
1442 | break; | |
1443 | case 't': | |
1444 | *d++ = '\t'; | |
1445 | break; | |
34a3fe2a PP |
1446 | #ifdef EBCDIC |
1447 | case 'e': | |
1448 | *d++ = '\047'; /* CP 1047 */ | |
1449 | break; | |
1450 | case 'a': | |
1451 | *d++ = '\057'; /* CP 1047 */ | |
1452 | break; | |
1453 | #else | |
79072805 LW |
1454 | case 'e': |
1455 | *d++ = '\033'; | |
1456 | break; | |
1457 | case 'a': | |
1458 | *d++ = '\007'; | |
1459 | break; | |
34a3fe2a | 1460 | #endif |
02aa26ce NT |
1461 | } /* end switch */ |
1462 | ||
79072805 LW |
1463 | s++; |
1464 | continue; | |
02aa26ce NT |
1465 | } /* end if (backslash) */ |
1466 | ||
79072805 | 1467 | *d++ = *s++; |
02aa26ce NT |
1468 | } /* while loop to process each character */ |
1469 | ||
1470 | /* terminate the string and set up the sv */ | |
79072805 | 1471 | *d = '\0'; |
463ee0b2 | 1472 | SvCUR_set(sv, d - SvPVX(sv)); |
79072805 LW |
1473 | SvPOK_on(sv); |
1474 | ||
02aa26ce | 1475 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1476 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1477 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1478 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1479 | } |
02aa26ce | 1480 | |
9b599b2a | 1481 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1482 | if (s > PL_bufptr) { |
1483 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
1484 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), | |
b3ac6de7 | 1485 | sv, Nullsv, |
3280af22 | 1486 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1487 | ? "tr" |
3280af22 | 1488 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1489 | ? "s" |
1490 | : "qq"))); | |
79072805 | 1491 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1492 | } else |
8990e307 | 1493 | SvREFCNT_dec(sv); |
79072805 LW |
1494 | return s; |
1495 | } | |
1496 | ||
ffb4593c NT |
1497 | /* S_intuit_more |
1498 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1499 | * FALSE otherwise. | |
ffb4593c NT |
1500 | * |
1501 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1502 | * | |
1503 | * ->[ and ->{ return TRUE | |
1504 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1505 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1506 | * if we're in a pattern and the first char is a { | |
1507 | * {4,5} (any digits around the comma) returns FALSE | |
1508 | * if we're in a pattern and the first char is a [ | |
1509 | * [] returns FALSE | |
1510 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1511 | * character class or not. It has to deal with things like | |
1512 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1513 | * anything else returns TRUE | |
1514 | */ | |
1515 | ||
9cbb5ea2 GS |
1516 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1517 | ||
76e3520e | 1518 | STATIC int |
cea2e8a9 | 1519 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1520 | { |
3280af22 | 1521 | if (PL_lex_brackets) |
79072805 LW |
1522 | return TRUE; |
1523 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1524 | return TRUE; | |
1525 | if (*s != '{' && *s != '[') | |
1526 | return FALSE; | |
3280af22 | 1527 | if (!PL_lex_inpat) |
79072805 LW |
1528 | return TRUE; |
1529 | ||
1530 | /* In a pattern, so maybe we have {n,m}. */ | |
1531 | if (*s == '{') { | |
1532 | s++; | |
1533 | if (!isDIGIT(*s)) | |
1534 | return TRUE; | |
1535 | while (isDIGIT(*s)) | |
1536 | s++; | |
1537 | if (*s == ',') | |
1538 | s++; | |
1539 | while (isDIGIT(*s)) | |
1540 | s++; | |
1541 | if (*s == '}') | |
1542 | return FALSE; | |
1543 | return TRUE; | |
1544 | ||
1545 | } | |
1546 | ||
1547 | /* On the other hand, maybe we have a character class */ | |
1548 | ||
1549 | s++; | |
1550 | if (*s == ']' || *s == '^') | |
1551 | return FALSE; | |
1552 | else { | |
ffb4593c | 1553 | /* this is terrifying, and it works */ |
79072805 LW |
1554 | int weight = 2; /* let's weigh the evidence */ |
1555 | char seen[256]; | |
f27ffc4a | 1556 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1557 | char *send = strchr(s,']'); |
3280af22 | 1558 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1559 | |
1560 | if (!send) /* has to be an expression */ | |
1561 | return TRUE; | |
1562 | ||
1563 | Zero(seen,256,char); | |
1564 | if (*s == '$') | |
1565 | weight -= 3; | |
1566 | else if (isDIGIT(*s)) { | |
1567 | if (s[1] != ']') { | |
1568 | if (isDIGIT(s[1]) && s[2] == ']') | |
1569 | weight -= 10; | |
1570 | } | |
1571 | else | |
1572 | weight -= 100; | |
1573 | } | |
1574 | for (; s < send; s++) { | |
1575 | last_un_char = un_char; | |
1576 | un_char = (unsigned char)*s; | |
1577 | switch (*s) { | |
1578 | case '@': | |
1579 | case '&': | |
1580 | case '$': | |
1581 | weight -= seen[un_char] * 10; | |
834a4ddd | 1582 | if (isALNUM_lazy(s+1)) { |
8903cb82 | 1583 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1584 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1585 | weight -= 100; |
1586 | else | |
1587 | weight -= 10; | |
1588 | } | |
1589 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1590 | strchr("[#!%*<>()-=",s[1])) { |
1591 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1592 | weight -= 10; |
1593 | else | |
1594 | weight -= 1; | |
1595 | } | |
1596 | break; | |
1597 | case '\\': | |
1598 | un_char = 254; | |
1599 | if (s[1]) { | |
93a17b20 | 1600 | if (strchr("wds]",s[1])) |
79072805 LW |
1601 | weight += 100; |
1602 | else if (seen['\''] || seen['"']) | |
1603 | weight += 1; | |
93a17b20 | 1604 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1605 | weight += 40; |
1606 | else if (isDIGIT(s[1])) { | |
1607 | weight += 40; | |
1608 | while (s[1] && isDIGIT(s[1])) | |
1609 | s++; | |
1610 | } | |
1611 | } | |
1612 | else | |
1613 | weight += 100; | |
1614 | break; | |
1615 | case '-': | |
1616 | if (s[1] == '\\') | |
1617 | weight += 50; | |
93a17b20 | 1618 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1619 | weight += 30; |
93a17b20 | 1620 | if (strchr("zZ79~",s[1])) |
79072805 | 1621 | weight += 30; |
f27ffc4a GS |
1622 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1623 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1624 | break; |
1625 | default: | |
93a17b20 | 1626 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1627 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1628 | char *d = tmpbuf; | |
1629 | while (isALPHA(*s)) | |
1630 | *d++ = *s++; | |
1631 | *d = '\0'; | |
1632 | if (keyword(tmpbuf, d - tmpbuf)) | |
1633 | weight -= 150; | |
1634 | } | |
1635 | if (un_char == last_un_char + 1) | |
1636 | weight += 5; | |
1637 | weight -= seen[un_char]; | |
1638 | break; | |
1639 | } | |
1640 | seen[un_char]++; | |
1641 | } | |
1642 | if (weight >= 0) /* probably a character class */ | |
1643 | return FALSE; | |
1644 | } | |
1645 | ||
1646 | return TRUE; | |
1647 | } | |
ffed7fef | 1648 | |
ffb4593c NT |
1649 | /* |
1650 | * S_intuit_method | |
1651 | * | |
1652 | * Does all the checking to disambiguate | |
1653 | * foo bar | |
1654 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1655 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1656 | * | |
1657 | * First argument is the stuff after the first token, e.g. "bar". | |
1658 | * | |
1659 | * Not a method if bar is a filehandle. | |
1660 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
1661 | * Not a method if it's really "Foo $bar" | |
1662 | * Method if it's "foo $bar" | |
1663 | * Not a method if it's really "print foo $bar" | |
1664 | * Method if it's really "foo package::" (interpreted as package->foo) | |
1665 | * Not a method if bar is known to be a subroutne ("sub bar; foo bar") | |
1666 | * Not a method if bar is a filehandle or package, but is quotd with | |
1667 | * => | |
1668 | */ | |
1669 | ||
76e3520e | 1670 | STATIC int |
cea2e8a9 | 1671 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
1672 | { |
1673 | char *s = start + (*start == '$'); | |
3280af22 | 1674 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
1675 | STRLEN len; |
1676 | GV* indirgv; | |
1677 | ||
1678 | if (gv) { | |
b6c543e3 | 1679 | CV *cv; |
a0d0e21e LW |
1680 | if (GvIO(gv)) |
1681 | return 0; | |
b6c543e3 IZ |
1682 | if ((cv = GvCVu(gv))) { |
1683 | char *proto = SvPVX(cv); | |
1684 | if (proto) { | |
1685 | if (*proto == ';') | |
1686 | proto++; | |
1687 | if (*proto == '*') | |
1688 | return 0; | |
1689 | } | |
1690 | } else | |
a0d0e21e LW |
1691 | gv = 0; |
1692 | } | |
8903cb82 | 1693 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
1694 | /* start is the beginning of the possible filehandle/object, |
1695 | * and s is the end of it | |
1696 | * tmpbuf is a copy of it | |
1697 | */ | |
1698 | ||
a0d0e21e | 1699 | if (*start == '$') { |
3280af22 | 1700 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
1701 | return 0; |
1702 | s = skipspace(s); | |
3280af22 NIS |
1703 | PL_bufptr = start; |
1704 | PL_expect = XREF; | |
a0d0e21e LW |
1705 | return *s == '(' ? FUNCMETH : METHOD; |
1706 | } | |
1707 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
1708 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
1709 | len -= 2; | |
1710 | tmpbuf[len] = '\0'; | |
1711 | goto bare_package; | |
1712 | } | |
1713 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 1714 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
1715 | return 0; |
1716 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 1717 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 1718 | s = skipspace(s); |
3280af22 | 1719 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 1720 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 1721 | bare_package: |
3280af22 | 1722 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 1723 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
1724 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
1725 | PL_expect = XTERM; | |
a0d0e21e | 1726 | force_next(WORD); |
3280af22 | 1727 | PL_bufptr = s; |
a0d0e21e LW |
1728 | return *s == '(' ? FUNCMETH : METHOD; |
1729 | } | |
1730 | } | |
1731 | return 0; | |
1732 | } | |
1733 | ||
ffb4593c NT |
1734 | /* |
1735 | * S_incl_perldb | |
1736 | * Return a string of Perl code to load the debugger. If PERL5DB | |
1737 | * is set, it will return the contents of that, otherwise a | |
1738 | * compile-time require of perl5db.pl. | |
1739 | */ | |
1740 | ||
76e3520e | 1741 | STATIC char* |
cea2e8a9 | 1742 | S_incl_perldb(pTHX) |
a0d0e21e | 1743 | { |
3280af22 | 1744 | if (PL_perldb) { |
76e3520e | 1745 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
1746 | |
1747 | if (pdb) | |
1748 | return pdb; | |
61bb5906 | 1749 | SETERRNO(0,SS$_NORMAL); |
a0d0e21e LW |
1750 | return "BEGIN { require 'perl5db.pl' }"; |
1751 | } | |
1752 | return ""; | |
1753 | } | |
1754 | ||
1755 | ||
16d20bd9 AD |
1756 | /* Encoded script support. filter_add() effectively inserts a |
1757 | * 'pre-processing' function into the current source input stream. | |
1758 | * Note that the filter function only applies to the current source file | |
1759 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
1760 | * | |
1761 | * The datasv parameter (which may be NULL) can be used to pass | |
1762 | * private data to this instance of the filter. The filter function | |
1763 | * can recover the SV using the FILTER_DATA macro and use it to | |
1764 | * store private buffers and state information. | |
1765 | * | |
1766 | * The supplied datasv parameter is upgraded to a PVIO type | |
e0c19803 GS |
1767 | * and the IoDIRP field is used to store the function pointer, |
1768 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. | |
16d20bd9 AD |
1769 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
1770 | * private use must be set using malloc'd pointers. | |
1771 | */ | |
16d20bd9 AD |
1772 | |
1773 | SV * | |
864dbfa3 | 1774 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 1775 | { |
f4c556ac GS |
1776 | if (!funcp) |
1777 | return Nullsv; | |
1778 | ||
3280af22 NIS |
1779 | if (!PL_rsfp_filters) |
1780 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 1781 | if (!datasv) |
8c52afec | 1782 | datasv = NEWSV(255,0); |
16d20bd9 | 1783 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 1784 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
16d20bd9 | 1785 | IoDIRP(datasv) = (DIR*)funcp; /* stash funcp into spare field */ |
e0c19803 | 1786 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac GS |
1787 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
1788 | funcp, SvPV_nolen(datasv))); | |
3280af22 NIS |
1789 | av_unshift(PL_rsfp_filters, 1); |
1790 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
1791 | return(datasv); |
1792 | } | |
1793 | ||
1794 | ||
1795 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 1796 | void |
864dbfa3 | 1797 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 1798 | { |
e0c19803 | 1799 | SV *datasv; |
f4c556ac | 1800 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", funcp)); |
3280af22 | 1801 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
1802 | return; |
1803 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 GS |
1804 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
1805 | if (IoDIRP(datasv) == (DIR*)funcp) { | |
1806 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; | |
1807 | IoDIRP(datasv) = (DIR*)NULL; | |
3280af22 | 1808 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 1809 | |
16d20bd9 AD |
1810 | return; |
1811 | } | |
1812 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 1813 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
1814 | } |
1815 | ||
1816 | ||
1817 | /* Invoke the n'th filter function for the current rsfp. */ | |
1818 | I32 | |
864dbfa3 | 1819 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
8ac85365 NIS |
1820 | |
1821 | ||
1822 | /* 0 = read one text line */ | |
a0d0e21e | 1823 | { |
16d20bd9 AD |
1824 | filter_t funcp; |
1825 | SV *datasv = NULL; | |
e50aee73 | 1826 | |
3280af22 | 1827 | if (!PL_rsfp_filters) |
16d20bd9 | 1828 | return -1; |
3280af22 | 1829 | if (idx > AvFILLp(PL_rsfp_filters)){ /* Any more filters? */ |
16d20bd9 AD |
1830 | /* Provide a default input filter to make life easy. */ |
1831 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
1832 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1833 | "filter_read %d: from rsfp\n", idx)); | |
16d20bd9 AD |
1834 | if (maxlen) { |
1835 | /* Want a block */ | |
1836 | int len ; | |
1837 | int old_len = SvCUR(buf_sv) ; | |
1838 | ||
1839 | /* ensure buf_sv is large enough */ | |
1840 | SvGROW(buf_sv, old_len + maxlen) ; | |
3280af22 NIS |
1841 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
1842 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1843 | return -1; /* error */ |
1844 | else | |
1845 | return 0 ; /* end of file */ | |
1846 | } | |
16d20bd9 AD |
1847 | SvCUR_set(buf_sv, old_len + len) ; |
1848 | } else { | |
1849 | /* Want a line */ | |
3280af22 NIS |
1850 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
1851 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
1852 | return -1; /* error */ |
1853 | else | |
1854 | return 0 ; /* end of file */ | |
1855 | } | |
16d20bd9 AD |
1856 | } |
1857 | return SvCUR(buf_sv); | |
1858 | } | |
1859 | /* Skip this filter slot if filter has been deleted */ | |
3280af22 | 1860 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef){ |
f4c556ac GS |
1861 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1862 | "filter_read %d: skipped (filter deleted)\n", | |
1863 | idx)); | |
16d20bd9 AD |
1864 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
1865 | } | |
1866 | /* Get function pointer hidden within datasv */ | |
1867 | funcp = (filter_t)IoDIRP(datasv); | |
f4c556ac GS |
1868 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
1869 | "filter_read %d: via function %p (%s)\n", | |
1870 | idx, funcp, SvPV_nolen(datasv))); | |
16d20bd9 AD |
1871 | /* Call function. The function is expected to */ |
1872 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 1873 | /* Return: <0:error, =0:eof, >0:not eof */ |
0cb96387 | 1874 | return (*funcp)(aTHXo_ idx, buf_sv, maxlen); |
16d20bd9 AD |
1875 | } |
1876 | ||
76e3520e | 1877 | STATIC char * |
cea2e8a9 | 1878 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 1879 | { |
a868473f | 1880 | #ifdef WIN32FILTER |
3280af22 | 1881 | if (!PL_rsfp_filters) { |
a868473f NIS |
1882 | filter_add(win32_textfilter,NULL); |
1883 | } | |
1884 | #endif | |
3280af22 | 1885 | if (PL_rsfp_filters) { |
16d20bd9 | 1886 | |
55497cff | 1887 | if (!append) |
1888 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
1889 | if (FILTER_READ(0, sv, 0) > 0) |
1890 | return ( SvPVX(sv) ) ; | |
1891 | else | |
1892 | return Nullch ; | |
1893 | } | |
9d116dd7 | 1894 | else |
fd049845 | 1895 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
1896 | } |
1897 | ||
1898 | ||
748a9306 LW |
1899 | #ifdef DEBUGGING |
1900 | static char* exp_name[] = | |
09bef843 SB |
1901 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
1902 | "ATTRTERM", "TERMBLOCK" | |
1903 | }; | |
748a9306 | 1904 | #endif |
463ee0b2 | 1905 | |
02aa26ce NT |
1906 | /* |
1907 | yylex | |
1908 | ||
1909 | Works out what to call the token just pulled out of the input | |
1910 | stream. The yacc parser takes care of taking the ops we return and | |
1911 | stitching them into a tree. | |
1912 | ||
1913 | Returns: | |
1914 | PRIVATEREF | |
1915 | ||
1916 | Structure: | |
1917 | if read an identifier | |
1918 | if we're in a my declaration | |
1919 | croak if they tried to say my($foo::bar) | |
1920 | build the ops for a my() declaration | |
1921 | if it's an access to a my() variable | |
1922 | are we in a sort block? | |
1923 | croak if my($a); $a <=> $b | |
1924 | build ops for access to a my() variable | |
1925 | if in a dq string, and they've said @foo and we can't find @foo | |
1926 | croak | |
1927 | build ops for a bareword | |
1928 | if we already built the token before, use it. | |
1929 | */ | |
1930 | ||
864dbfa3 GS |
1931 | int |
1932 | #ifdef USE_PURE_BISON | |
cea2e8a9 | 1933 | Perl_yylex(pTHX_ YYSTYPE *lvalp, int *lcharp) |
864dbfa3 | 1934 | #else |
cea2e8a9 | 1935 | Perl_yylex(pTHX) |
864dbfa3 | 1936 | #endif |
378cc40b | 1937 | { |
11343788 | 1938 | dTHR; |
79072805 | 1939 | register char *s; |
378cc40b | 1940 | register char *d; |
79072805 | 1941 | register I32 tmp; |
463ee0b2 | 1942 | STRLEN len; |
161b471a NIS |
1943 | GV *gv = Nullgv; |
1944 | GV **gvp = 0; | |
a687059c | 1945 | |
a1a0e61e TD |
1946 | #ifdef USE_PURE_BISON |
1947 | yylval_pointer = lvalp; | |
1948 | yychar_pointer = lcharp; | |
1949 | #endif | |
1950 | ||
02aa26ce | 1951 | /* check if there's an identifier for us to look at */ |
3280af22 | 1952 | if (PL_pending_ident) { |
02aa26ce | 1953 | /* pit holds the identifier we read and pending_ident is reset */ |
3280af22 NIS |
1954 | char pit = PL_pending_ident; |
1955 | PL_pending_ident = 0; | |
bbce6d69 | 1956 | |
02aa26ce NT |
1957 | /* if we're in a my(), we can't allow dynamics here. |
1958 | $foo'bar has already been turned into $foo::bar, so | |
1959 | just check for colons. | |
1960 | ||
1961 | if it's a legal name, the OP is a PADANY. | |
1962 | */ | |
3280af22 | 1963 | if (PL_in_my) { |
77ca0c92 LW |
1964 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ |
1965 | tmp = pad_allocmy(PL_tokenbuf); | |
1966 | } | |
1967 | else { | |
1968 | if (strchr(PL_tokenbuf,':')) | |
1969 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
02aa26ce | 1970 | |
77ca0c92 LW |
1971 | yylval.opval = newOP(OP_PADANY, 0); |
1972 | yylval.opval->op_targ = pad_allocmy(PL_tokenbuf); | |
1973 | return PRIVATEREF; | |
1974 | } | |
bbce6d69 | 1975 | } |
1976 | ||
02aa26ce NT |
1977 | /* |
1978 | build the ops for accesses to a my() variable. | |
1979 | ||
1980 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
1981 | then used in a comparison. This catches most, but not | |
1982 | all cases. For instance, it catches | |
1983 | sort { my($a); $a <=> $b } | |
1984 | but not | |
1985 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
1986 | (although why you'd do that is anyone's guess). | |
1987 | */ | |
1988 | ||
3280af22 | 1989 | if (!strchr(PL_tokenbuf,':')) { |
a863c7d1 | 1990 | #ifdef USE_THREADS |
54b9620d | 1991 | /* Check for single character per-thread SVs */ |
3280af22 NIS |
1992 | if (PL_tokenbuf[0] == '$' && PL_tokenbuf[2] == '\0' |
1993 | && !isALPHA(PL_tokenbuf[1]) /* Rule out obvious non-threadsvs */ | |
1994 | && (tmp = find_threadsv(&PL_tokenbuf[1])) != NOT_IN_PAD) | |
554b3eca | 1995 | { |
2faa37cc | 1996 | yylval.opval = newOP(OP_THREADSV, 0); |
a863c7d1 MB |
1997 | yylval.opval->op_targ = tmp; |
1998 | return PRIVATEREF; | |
1999 | } | |
2000 | #endif /* USE_THREADS */ | |
3280af22 | 2001 | if ((tmp = pad_findmy(PL_tokenbuf)) != NOT_IN_PAD) { |
77ca0c92 LW |
2002 | /* might be an "our" variable" */ |
2003 | if (SvFLAGS(AvARRAY(PL_comppad_name)[tmp]) & SVpad_OUR) { | |
2004 | /* build ops for a bareword */ | |
2005 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
2006 | yylval.opval->op_private = OPpCONST_ENTERED; | |
2007 | gv_fetchpv(PL_tokenbuf+1, | |
2008 | (PL_in_eval | |
2009 | ? (GV_ADDMULTI | GV_ADDINEVAL | GV_ADDOUR) | |
2010 | : GV_ADDOUR | |
2011 | ), | |
2012 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2013 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
2014 | : SVt_PVHV)); | |
2015 | return WORD; | |
2016 | } | |
2017 | ||
02aa26ce | 2018 | /* if it's a sort block and they're naming $a or $b */ |
3280af22 NIS |
2019 | if (PL_last_lop_op == OP_SORT && |
2020 | PL_tokenbuf[0] == '$' && | |
2021 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
2022 | && !PL_tokenbuf[2]) | |
bbce6d69 | 2023 | { |
3280af22 NIS |
2024 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; |
2025 | d < PL_bufend && *d != '\n'; | |
a863c7d1 MB |
2026 | d++) |
2027 | { | |
2028 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
cea2e8a9 | 2029 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", |
3280af22 | 2030 | PL_tokenbuf); |
a863c7d1 | 2031 | } |
bbce6d69 | 2032 | } |
2033 | } | |
bbce6d69 | 2034 | |
a863c7d1 MB |
2035 | yylval.opval = newOP(OP_PADANY, 0); |
2036 | yylval.opval->op_targ = tmp; | |
2037 | return PRIVATEREF; | |
2038 | } | |
bbce6d69 | 2039 | } |
2040 | ||
02aa26ce NT |
2041 | /* |
2042 | Whine if they've said @foo in a doublequoted string, | |
2043 | and @foo isn't a variable we can find in the symbol | |
2044 | table. | |
2045 | */ | |
3280af22 NIS |
2046 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { |
2047 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
2048 | if (!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
cea2e8a9 | 2049 | yyerror(Perl_form(aTHX_ "In string, %s now must be written as \\%s", |
3280af22 | 2050 | PL_tokenbuf, PL_tokenbuf)); |
bbce6d69 | 2051 | } |
2052 | ||
02aa26ce | 2053 | /* build ops for a bareword */ |
3280af22 | 2054 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); |
bbce6d69 | 2055 | yylval.opval->op_private = OPpCONST_ENTERED; |
3280af22 NIS |
2056 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
2057 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
2058 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
bbce6d69 | 2059 | : SVt_PVHV)); |
2060 | return WORD; | |
2061 | } | |
2062 | ||
02aa26ce NT |
2063 | /* no identifier pending identification */ |
2064 | ||
3280af22 | 2065 | switch (PL_lex_state) { |
79072805 LW |
2066 | #ifdef COMMENTARY |
2067 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2068 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2069 | break; | |
2070 | #endif | |
2071 | ||
09bef843 | 2072 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2073 | case LEX_KNOWNEXT: |
3280af22 NIS |
2074 | PL_nexttoke--; |
2075 | yylval = PL_nextval[PL_nexttoke]; | |
2076 | if (!PL_nexttoke) { | |
2077 | PL_lex_state = PL_lex_defer; | |
2078 | PL_expect = PL_lex_expect; | |
2079 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2080 | } |
3280af22 | 2081 | return(PL_nexttype[PL_nexttoke]); |
79072805 | 2082 | |
02aa26ce | 2083 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2084 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2085 | */ |
79072805 LW |
2086 | case LEX_INTERPCASEMOD: |
2087 | #ifdef DEBUGGING | |
3280af22 | 2088 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2089 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2090 | #endif |
02aa26ce | 2091 | /* handle \E or end of string */ |
3280af22 | 2092 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2093 | char oldmod; |
02aa26ce NT |
2094 | |
2095 | /* if at a \E */ | |
3280af22 NIS |
2096 | if (PL_lex_casemods) { |
2097 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2098 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2099 | |
3280af22 NIS |
2100 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2101 | PL_bufptr += 2; | |
2102 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2103 | } |
79072805 LW |
2104 | return ')'; |
2105 | } | |
3280af22 NIS |
2106 | if (PL_bufptr != PL_bufend) |
2107 | PL_bufptr += 2; | |
2108 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2109 | return yylex(); |
79072805 LW |
2110 | } |
2111 | else { | |
3280af22 | 2112 | s = PL_bufptr + 1; |
79072805 LW |
2113 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) |
2114 | tmp = *s, *s = s[2], s[2] = tmp; /* misordered... */ | |
a0d0e21e | 2115 | if (strchr("LU", *s) && |
3280af22 | 2116 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) |
a0d0e21e | 2117 | { |
3280af22 | 2118 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
a0d0e21e LW |
2119 | return ')'; |
2120 | } | |
3280af22 NIS |
2121 | if (PL_lex_casemods > 10) { |
2122 | char* newlb = Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2123 | if (newlb != PL_lex_casestack) { | |
a0d0e21e | 2124 | SAVEFREEPV(newlb); |
3280af22 | 2125 | PL_lex_casestack = newlb; |
a0d0e21e LW |
2126 | } |
2127 | } | |
3280af22 NIS |
2128 | PL_lex_casestack[PL_lex_casemods++] = *s; |
2129 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2130 | PL_lex_state = LEX_INTERPCONCAT; | |
2131 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
2132 | force_next('('); |
2133 | if (*s == 'l') | |
3280af22 | 2134 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; |
79072805 | 2135 | else if (*s == 'u') |
3280af22 | 2136 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; |
79072805 | 2137 | else if (*s == 'L') |
3280af22 | 2138 | PL_nextval[PL_nexttoke].ival = OP_LC; |
79072805 | 2139 | else if (*s == 'U') |
3280af22 | 2140 | PL_nextval[PL_nexttoke].ival = OP_UC; |
a0d0e21e | 2141 | else if (*s == 'Q') |
3280af22 | 2142 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; |
79072805 | 2143 | else |
cea2e8a9 | 2144 | Perl_croak(aTHX_ "panic: yylex"); |
3280af22 | 2145 | PL_bufptr = s + 1; |
79072805 | 2146 | force_next(FUNC); |
3280af22 NIS |
2147 | if (PL_lex_starts) { |
2148 | s = PL_bufptr; | |
2149 | PL_lex_starts = 0; | |
79072805 LW |
2150 | Aop(OP_CONCAT); |
2151 | } | |
2152 | else | |
cea2e8a9 | 2153 | return yylex(); |
79072805 LW |
2154 | } |
2155 | ||
55497cff | 2156 | case LEX_INTERPPUSH: |
2157 | return sublex_push(); | |
2158 | ||
79072805 | 2159 | case LEX_INTERPSTART: |
3280af22 | 2160 | if (PL_bufptr == PL_bufend) |
79072805 | 2161 | return sublex_done(); |
3280af22 NIS |
2162 | PL_expect = XTERM; |
2163 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2164 | PL_lex_state = LEX_INTERPNORMAL; | |
2165 | if (PL_lex_dojoin) { | |
2166 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2167 | force_next(','); |
554b3eca | 2168 | #ifdef USE_THREADS |
533c011a NIS |
2169 | PL_nextval[PL_nexttoke].opval = newOP(OP_THREADSV, 0); |
2170 | PL_nextval[PL_nexttoke].opval->op_targ = find_threadsv("\""); | |
554b3eca MB |
2171 | force_next(PRIVATEREF); |
2172 | #else | |
a0d0e21e | 2173 | force_ident("\"", '$'); |
554b3eca | 2174 | #endif /* USE_THREADS */ |
3280af22 | 2175 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2176 | force_next('$'); |
3280af22 | 2177 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2178 | force_next('('); |
3280af22 | 2179 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2180 | force_next(FUNC); |
2181 | } | |
3280af22 NIS |
2182 | if (PL_lex_starts++) { |
2183 | s = PL_bufptr; | |
79072805 LW |
2184 | Aop(OP_CONCAT); |
2185 | } | |
cea2e8a9 | 2186 | return yylex(); |
79072805 LW |
2187 | |
2188 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2189 | if (intuit_more(PL_bufptr)) { |
2190 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2191 | break; |
2192 | } | |
2193 | /* FALL THROUGH */ | |
2194 | ||
2195 | case LEX_INTERPEND: | |
3280af22 NIS |
2196 | if (PL_lex_dojoin) { |
2197 | PL_lex_dojoin = FALSE; | |
2198 | PL_lex_state = LEX_INTERPCONCAT; | |
79072805 LW |
2199 | return ')'; |
2200 | } | |
43a16006 | 2201 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2202 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2203 | { |
e9fa98b2 | 2204 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2205 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2206 | PL_lex_repl = Nullsv; |
2207 | } | |
79072805 LW |
2208 | /* FALLTHROUGH */ |
2209 | case LEX_INTERPCONCAT: | |
2210 | #ifdef DEBUGGING | |
3280af22 | 2211 | if (PL_lex_brackets) |
cea2e8a9 | 2212 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2213 | #endif |
3280af22 | 2214 | if (PL_bufptr == PL_bufend) |
79072805 LW |
2215 | return sublex_done(); |
2216 | ||
3280af22 NIS |
2217 | if (SvIVX(PL_linestr) == '\'') { |
2218 | SV *sv = newSVsv(PL_linestr); | |
2219 | if (!PL_lex_inpat) | |
76e3520e | 2220 | sv = tokeq(sv); |
3280af22 | 2221 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2222 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2223 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2224 | s = PL_bufend; |
79072805 LW |
2225 | } |
2226 | else { | |
3280af22 | 2227 | s = scan_const(PL_bufptr); |
79072805 | 2228 | if (*s == '\\') |
3280af22 | 2229 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2230 | else |
3280af22 | 2231 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2232 | } |
2233 | ||
3280af22 NIS |
2234 | if (s != PL_bufptr) { |
2235 | PL_nextval[PL_nexttoke] = yylval; | |
2236 | PL_expect = XTERM; | |
79072805 | 2237 | force_next(THING); |
3280af22 | 2238 | if (PL_lex_starts++) |
79072805 LW |
2239 | Aop(OP_CONCAT); |
2240 | else { | |
3280af22 | 2241 | PL_bufptr = s; |
cea2e8a9 | 2242 | return yylex(); |
79072805 LW |
2243 | } |
2244 | } | |
2245 | ||
cea2e8a9 | 2246 | return yylex(); |
a0d0e21e | 2247 | case LEX_FORMLINE: |
3280af22 NIS |
2248 | PL_lex_state = LEX_NORMAL; |
2249 | s = scan_formline(PL_bufptr); | |
2250 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2251 | goto rightbracket; |
2252 | OPERATOR(';'); | |
79072805 LW |
2253 | } |
2254 | ||
3280af22 NIS |
2255 | s = PL_bufptr; |
2256 | PL_oldoldbufptr = PL_oldbufptr; | |
2257 | PL_oldbufptr = s; | |
79072805 | 2258 | DEBUG_p( { |
bf49b057 GS |
2259 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at %s\n", |
2260 | exp_name[PL_expect], s); | |
79072805 | 2261 | } ) |
463ee0b2 LW |
2262 | |
2263 | retry: | |
378cc40b LW |
2264 | switch (*s) { |
2265 | default: | |
834a4ddd LW |
2266 | if (isIDFIRST_lazy(s)) |
2267 | goto keylookup; | |
cea2e8a9 | 2268 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2269 | case 4: |
2270 | case 26: | |
2271 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2272 | case 0: |
3280af22 NIS |
2273 | if (!PL_rsfp) { |
2274 | PL_last_uni = 0; | |
2275 | PL_last_lop = 0; | |
2276 | if (PL_lex_brackets) | |
d98d5fff | 2277 | yyerror("Missing right curly or square bracket"); |
79072805 | 2278 | TOKEN(0); |
463ee0b2 | 2279 | } |
3280af22 | 2280 | if (s++ < PL_bufend) |
a687059c | 2281 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2282 | PL_last_uni = 0; |
2283 | PL_last_lop = 0; | |
2284 | if (!PL_in_eval && !PL_preambled) { | |
2285 | PL_preambled = TRUE; | |
2286 | sv_setpv(PL_linestr,incl_perldb()); | |
2287 | if (SvCUR(PL_linestr)) | |
2288 | sv_catpv(PL_linestr,";"); | |
2289 | if (PL_preambleav){ | |
2290 | while(AvFILLp(PL_preambleav) >= 0) { | |
2291 | SV *tmpsv = av_shift(PL_preambleav); | |
2292 | sv_catsv(PL_linestr, tmpsv); | |
2293 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2294 | sv_free(tmpsv); |
2295 | } | |
3280af22 NIS |
2296 | sv_free((SV*)PL_preambleav); |
2297 | PL_preambleav = NULL; | |
91b7def8 | 2298 | } |
3280af22 NIS |
2299 | if (PL_minus_n || PL_minus_p) { |
2300 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2301 | if (PL_minus_l) | |
2302 | sv_catpv(PL_linestr,"chomp;"); | |
2303 | if (PL_minus_a) { | |
8fd239a7 CS |
2304 | GV* gv = gv_fetchpv("::F", TRUE, SVt_PVAV); |
2305 | if (gv) | |
2306 | GvIMPORTED_AV_on(gv); | |
3280af22 NIS |
2307 | if (PL_minus_F) { |
2308 | if (strchr("/'\"", *PL_splitstr) | |
2309 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
cea2e8a9 | 2310 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s);", PL_splitstr); |
54310121 | 2311 | else { |
2312 | char delim; | |
2313 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2314 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2315 | delim = *s; |
cea2e8a9 | 2316 | Perl_sv_catpvf(aTHX_ PL_linestr, "@F=split(%s%c", |
46fc3d4c | 2317 | "q" + (delim == '\''), delim); |
3280af22 | 2318 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2319 | if (*s == '\\') |
3280af22 NIS |
2320 | sv_catpvn(PL_linestr, "\\", 1); |
2321 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2322 | } |
cea2e8a9 | 2323 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2324 | } |
2304df62 AD |
2325 | } |
2326 | else | |
3280af22 | 2327 | sv_catpv(PL_linestr,"@F=split(' ');"); |
2304df62 | 2328 | } |
79072805 | 2329 | } |
3280af22 NIS |
2330 | sv_catpv(PL_linestr, "\n"); |
2331 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2332 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2333 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
a0d0e21e LW |
2334 | SV *sv = NEWSV(85,0); |
2335 | ||
2336 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2337 | sv_setsv(sv,PL_linestr); |
57843af0 | 2338 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2339 | } |
79072805 | 2340 | goto retry; |
a687059c | 2341 | } |
e929a76b | 2342 | do { |
3280af22 | 2343 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
e929a76b | 2344 | fake_eof: |
3280af22 NIS |
2345 | if (PL_rsfp) { |
2346 | if (PL_preprocess && !PL_in_eval) | |
2347 | (void)PerlProc_pclose(PL_rsfp); | |
2348 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2349 | PerlIO_clearerr(PL_rsfp); | |
395c3793 | 2350 | else |
3280af22 NIS |
2351 | (void)PerlIO_close(PL_rsfp); |
2352 | PL_rsfp = Nullfp; | |
4a9ae47a | 2353 | PL_doextract = FALSE; |
395c3793 | 2354 | } |
3280af22 NIS |
2355 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { |
2356 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2357 | sv_catpv(PL_linestr,";}"); | |
2358 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2359 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2360 | PL_minus_n = PL_minus_p = 0; | |
e929a76b LW |
2361 | goto retry; |
2362 | } | |
3280af22 NIS |
2363 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2364 | sv_setpv(PL_linestr,""); | |
79072805 | 2365 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ |
378cc40b | 2366 | } |
3280af22 | 2367 | if (PL_doextract) { |
a0d0e21e | 2368 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) |
3280af22 | 2369 | PL_doextract = FALSE; |
a0d0e21e LW |
2370 | |
2371 | /* Incest with pod. */ | |
2372 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2373 | sv_setpv(PL_linestr, ""); |
2374 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2375 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2376 | PL_doextract = FALSE; | |
a0d0e21e LW |
2377 | } |
2378 | } | |
463ee0b2 | 2379 | incline(s); |
3280af22 NIS |
2380 | } while (PL_doextract); |
2381 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2382 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2383 | SV *sv = NEWSV(85,0); |
a687059c | 2384 | |
93a17b20 | 2385 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2386 | sv_setsv(sv,PL_linestr); |
57843af0 | 2387 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2388 | } |
3280af22 | 2389 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
57843af0 | 2390 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2391 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2392 | s++; |
a0d0e21e | 2393 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2394 | s++; |
44a8e56a | 2395 | d = Nullch; |
3280af22 | 2396 | if (!PL_in_eval) { |
44a8e56a | 2397 | if (*s == '#' && *(s+1) == '!') |
2398 | d = s + 2; | |
2399 | #ifdef ALTERNATE_SHEBANG | |
2400 | else { | |
2401 | static char as[] = ALTERNATE_SHEBANG; | |
2402 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2403 | d = s + (sizeof(as) - 1); | |
2404 | } | |
2405 | #endif /* ALTERNATE_SHEBANG */ | |
2406 | } | |
2407 | if (d) { | |
b8378b72 | 2408 | char *ipath; |
774d564b | 2409 | char *ipathend; |
b8378b72 | 2410 | |
774d564b | 2411 | while (isSPACE(*d)) |
b8378b72 CS |
2412 | d++; |
2413 | ipath = d; | |
774d564b | 2414 | while (*d && !isSPACE(*d)) |
2415 | d++; | |
2416 | ipathend = d; | |
2417 | ||
2418 | #ifdef ARG_ZERO_IS_SCRIPT | |
2419 | if (ipathend > ipath) { | |
2420 | /* | |
2421 | * HP-UX (at least) sets argv[0] to the script name, | |
2422 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2423 | * at least, set argv[0] to the basename of the Perl | |
2424 | * interpreter. So, having found "#!", we'll set it right. | |
2425 | */ | |
2426 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); | |
2427 | assert(SvPOK(x) || SvGMAGICAL(x)); | |
cc49e20b | 2428 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2429 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2430 | SvSETMAGIC(x); |
2431 | } | |
774d564b | 2432 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2433 | } |
774d564b | 2434 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2435 | |
2436 | /* | |
2437 | * Look for options. | |
2438 | */ | |
748a9306 | 2439 | d = instr(s,"perl -"); |
84e30d1a | 2440 | if (!d) { |
748a9306 | 2441 | d = instr(s,"perl"); |
84e30d1a GS |
2442 | #if defined(DOSISH) |
2443 | /* avoid getting into infinite loops when shebang | |
2444 | * line contains "Perl" rather than "perl" */ | |
2445 | if (!d) { | |
2446 | for (d = ipathend-4; d >= ipath; --d) { | |
2447 | if ((*d == 'p' || *d == 'P') | |
2448 | && !ibcmp(d, "perl", 4)) | |
2449 | { | |
2450 | break; | |
2451 | } | |
2452 | } | |
2453 | if (d < ipath) | |
2454 | d = Nullch; | |
2455 | } | |
2456 | #endif | |
2457 | } | |
44a8e56a | 2458 | #ifdef ALTERNATE_SHEBANG |
2459 | /* | |
2460 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2461 | * character that can be part of a Perl expression, then if | |
2462 | * we see it but not "perl", we're probably looking at the | |
2463 | * start of Perl code, not a request to hand off to some | |
2464 | * other interpreter. Similarly, if "perl" is there, but | |
2465 | * not in the first 'word' of the line, we assume the line | |
2466 | * contains the start of the Perl program. | |
44a8e56a | 2467 | */ |
2468 | if (d && *s != '#') { | |
774d564b | 2469 | char *c = ipath; |
44a8e56a | 2470 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2471 | c++; | |
2472 | if (c < d) | |
2473 | d = Nullch; /* "perl" not in first word; ignore */ | |
2474 | else | |
2475 | *s = '#'; /* Don't try to parse shebang line */ | |
2476 | } | |
774d564b | 2477 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 2478 | if (!d && |
44a8e56a | 2479 | *s == '#' && |
774d564b | 2480 | ipathend > ipath && |
3280af22 | 2481 | !PL_minus_c && |
748a9306 | 2482 | !instr(s,"indir") && |
3280af22 | 2483 | instr(PL_origargv[0],"perl")) |
748a9306 | 2484 | { |
9f68db38 | 2485 | char **newargv; |
9f68db38 | 2486 | |
774d564b | 2487 | *ipathend = '\0'; |
2488 | s = ipathend + 1; | |
3280af22 | 2489 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2490 | s++; |
3280af22 NIS |
2491 | if (s < PL_bufend) { |
2492 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2493 | newargv[1] = s; |
3280af22 | 2494 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2495 | s++; |
2496 | *s = '\0'; | |
3280af22 | 2497 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2498 | } |
2499 | else | |
3280af22 | 2500 | newargv = PL_origargv; |
774d564b | 2501 | newargv[0] = ipath; |
80252599 | 2502 | PerlProc_execv(ipath, newargv); |
cea2e8a9 | 2503 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2504 | } |
748a9306 | 2505 | if (d) { |
3280af22 NIS |
2506 | U32 oldpdb = PL_perldb; |
2507 | bool oldn = PL_minus_n; | |
2508 | bool oldp = PL_minus_p; | |
748a9306 LW |
2509 | |
2510 | while (*d && !isSPACE(*d)) d++; | |
89bfa8cd | 2511 | while (*d == ' ' || *d == '\t') d++; |
748a9306 LW |
2512 | |
2513 | if (*d++ == '-') { | |
8cc95fdb | 2514 | do { |
2515 | if (*d == 'M' || *d == 'm') { | |
2516 | char *m = d; | |
2517 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2518 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2519 | (int)(d - m), m); |
2520 | } | |
2521 | d = moreswitches(d); | |
2522 | } while (d); | |
84902520 | 2523 | if (PERLDB_LINE && !oldpdb || |
3280af22 | 2524 | ( PL_minus_n || PL_minus_p ) && !(oldn || oldp) ) |
b084f20b | 2525 | /* if we have already added "LINE: while (<>) {", |
2526 | we must not do it again */ | |
748a9306 | 2527 | { |
3280af22 NIS |
2528 | sv_setpv(PL_linestr, ""); |
2529 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2530 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
2531 | PL_preambled = FALSE; | |
84902520 | 2532 | if (PERLDB_LINE) |
3280af22 | 2533 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2534 | goto retry; |
2535 | } | |
a0d0e21e | 2536 | } |
79072805 | 2537 | } |
9f68db38 | 2538 | } |
79072805 | 2539 | } |
3280af22 NIS |
2540 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2541 | PL_bufptr = s; | |
2542 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2543 | return yylex(); |
ae986130 | 2544 | } |
378cc40b | 2545 | goto retry; |
4fdae800 | 2546 | case '\r': |
6a27c188 | 2547 | #ifdef PERL_STRICT_CR |
cea2e8a9 GS |
2548 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
2549 | Perl_croak(aTHX_ | |
54310121 | 2550 | "(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2551 | #endif |
4fdae800 | 2552 | case ' ': case '\t': case '\f': case 013: |
378cc40b LW |
2553 | s++; |
2554 | goto retry; | |
378cc40b | 2555 | case '#': |
e929a76b | 2556 | case '\n': |
3280af22 NIS |
2557 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
2558 | d = PL_bufend; | |
a687059c | 2559 | while (s < d && *s != '\n') |
378cc40b | 2560 | s++; |
0f85fab0 | 2561 | if (s < d) |
378cc40b | 2562 | s++; |
463ee0b2 | 2563 | incline(s); |
3280af22 NIS |
2564 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2565 | PL_bufptr = s; | |
2566 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2567 | return yylex(); |
a687059c | 2568 | } |
378cc40b | 2569 | } |
a687059c | 2570 | else { |
378cc40b | 2571 | *s = '\0'; |
3280af22 | 2572 | PL_bufend = s; |
a687059c | 2573 | } |
378cc40b LW |
2574 | goto retry; |
2575 | case '-': | |
79072805 | 2576 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
378cc40b | 2577 | s++; |
3280af22 | 2578 | PL_bufptr = s; |
748a9306 LW |
2579 | tmp = *s++; |
2580 | ||
3280af22 | 2581 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 LW |
2582 | s++; |
2583 | ||
2584 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2585 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
748a9306 LW |
2586 | OPERATOR('-'); /* unary minus */ |
2587 | } | |
3280af22 NIS |
2588 | PL_last_uni = PL_oldbufptr; |
2589 | PL_last_lop_op = OP_FTEREAD; /* good enough */ | |
748a9306 | 2590 | switch (tmp) { |
79072805 LW |
2591 | case 'r': FTST(OP_FTEREAD); |
2592 | case 'w': FTST(OP_FTEWRITE); | |
2593 | case 'x': FTST(OP_FTEEXEC); | |
2594 | case 'o': FTST(OP_FTEOWNED); | |
2595 | case 'R': FTST(OP_FTRREAD); | |
2596 | case 'W': FTST(OP_FTRWRITE); | |
2597 | case 'X': FTST(OP_FTREXEC); | |
2598 | case 'O': FTST(OP_FTROWNED); | |
2599 | case 'e': FTST(OP_FTIS); | |
2600 | case 'z': FTST(OP_FTZERO); | |
2601 | case 's': FTST(OP_FTSIZE); | |
2602 | case 'f': FTST(OP_FTFILE); | |
2603 | case 'd': FTST(OP_FTDIR); | |
2604 | case 'l': FTST(OP_FTLINK); | |
2605 | case 'p': FTST(OP_FTPIPE); | |
2606 | case 'S': FTST(OP_FTSOCK); | |
2607 | case 'u': FTST(OP_FTSUID); | |
2608 | case 'g': FTST(OP_FTSGID); | |
2609 | case 'k': FTST(OP_FTSVTX); | |
2610 | case 'b': FTST(OP_FTBLK); | |
2611 | case 'c': FTST(OP_FTCHR); | |
2612 | case 't': FTST(OP_FTTTY); | |
2613 | case 'T': FTST(OP_FTTEXT); | |
2614 | case 'B': FTST(OP_FTBINARY); | |
85e6fe83 LW |
2615 | case 'M': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTMTIME); |
2616 | case 'A': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTATIME); | |
2617 | case 'C': gv_fetchpv("\024",TRUE, SVt_PV); FTST(OP_FTCTIME); | |
378cc40b | 2618 | default: |
cea2e8a9 | 2619 | Perl_croak(aTHX_ "Unrecognized file test: -%c", (int)tmp); |
378cc40b LW |
2620 | break; |
2621 | } | |
2622 | } | |
a687059c LW |
2623 | tmp = *s++; |
2624 | if (*s == tmp) { | |
2625 | s++; | |
3280af22 | 2626 | if (PL_expect == XOPERATOR) |
79072805 LW |
2627 | TERM(POSTDEC); |
2628 | else | |
2629 | OPERATOR(PREDEC); | |
2630 | } | |
2631 | else if (*s == '>') { | |
2632 | s++; | |
2633 | s = skipspace(s); | |
834a4ddd | 2634 | if (isIDFIRST_lazy(s)) { |
a0d0e21e | 2635 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 2636 | TOKEN(ARROW); |
79072805 | 2637 | } |
748a9306 LW |
2638 | else if (*s == '$') |
2639 | OPERATOR(ARROW); | |
463ee0b2 | 2640 | else |
748a9306 | 2641 | TERM(ARROW); |
a687059c | 2642 | } |
3280af22 | 2643 | if (PL_expect == XOPERATOR) |
79072805 LW |
2644 | Aop(OP_SUBTRACT); |
2645 | else { | |
3280af22 | 2646 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2647 | check_uni(); |
79072805 | 2648 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 2649 | } |
79072805 | 2650 | |
378cc40b | 2651 | case '+': |
a687059c LW |
2652 | tmp = *s++; |
2653 | if (*s == tmp) { | |
378cc40b | 2654 | s++; |
3280af22 | 2655 | if (PL_expect == XOPERATOR) |
79072805 LW |
2656 | TERM(POSTINC); |
2657 | else | |
2658 | OPERATOR(PREINC); | |
378cc40b | 2659 | } |
3280af22 | 2660 | if (PL_expect == XOPERATOR) |
79072805 LW |
2661 | Aop(OP_ADD); |
2662 | else { | |
3280af22 | 2663 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 2664 | check_uni(); |
a687059c | 2665 | OPERATOR('+'); |
2f3197b3 | 2666 | } |
a687059c | 2667 | |
378cc40b | 2668 | case '*': |
3280af22 NIS |
2669 | if (PL_expect != XOPERATOR) { |
2670 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
2671 | PL_expect = XOPERATOR; | |
2672 | force_ident(PL_tokenbuf, '*'); | |
2673 | if (!*PL_tokenbuf) | |
a0d0e21e | 2674 | PREREF('*'); |
79072805 | 2675 | TERM('*'); |
a687059c | 2676 | } |
79072805 LW |
2677 | s++; |
2678 | if (*s == '*') { | |
a687059c | 2679 | s++; |
79072805 | 2680 | PWop(OP_POW); |
a687059c | 2681 | } |
79072805 LW |
2682 | Mop(OP_MULTIPLY); |
2683 | ||
378cc40b | 2684 | case '%': |
3280af22 | 2685 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 2686 | ++s; |
2687 | Mop(OP_MODULO); | |
a687059c | 2688 | } |
3280af22 NIS |
2689 | PL_tokenbuf[0] = '%'; |
2690 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
2691 | if (!PL_tokenbuf[1]) { | |
2692 | if (s == PL_bufend) | |
bbce6d69 | 2693 | yyerror("Final % should be \\% or %name"); |
2694 | PREREF('%'); | |
a687059c | 2695 | } |
3280af22 | 2696 | PL_pending_ident = '%'; |
bbce6d69 | 2697 | TERM('%'); |
a687059c | 2698 | |
378cc40b | 2699 | case '^': |
79072805 | 2700 | s++; |
a0d0e21e | 2701 | BOop(OP_BIT_XOR); |
79072805 | 2702 | case '[': |
3280af22 | 2703 | PL_lex_brackets++; |
79072805 | 2704 | /* FALL THROUGH */ |
378cc40b | 2705 | case '~': |
378cc40b | 2706 | case ',': |
378cc40b LW |
2707 | tmp = *s++; |
2708 | OPERATOR(tmp); | |
a0d0e21e LW |
2709 | case ':': |
2710 | if (s[1] == ':') { | |
2711 | len = 0; | |
2712 | goto just_a_word; | |
2713 | } | |
2714 | s++; | |
09bef843 SB |
2715 | switch (PL_expect) { |
2716 | OP *attrs; | |
2717 | case XOPERATOR: | |
2718 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
2719 | break; | |
2720 | PL_bufptr = s; /* update in case we back off */ | |
2721 | goto grabattrs; | |
2722 | case XATTRBLOCK: | |
2723 | PL_expect = XBLOCK; | |
2724 | goto grabattrs; | |
2725 | case XATTRTERM: | |
2726 | PL_expect = XTERMBLOCK; | |
2727 | grabattrs: | |
2728 | s = skipspace(s); | |
2729 | attrs = Nullop; | |
2730 | while (isIDFIRST_lazy(s)) { | |
2731 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
2732 | if (*d == '(') { | |
2733 | d = scan_str(d,TRUE,TRUE); | |
2734 | if (!d) { | |
2735 | if (PL_lex_stuff) { | |
2736 | SvREFCNT_dec(PL_lex_stuff); | |
2737 | PL_lex_stuff = Nullsv; | |
2738 | } | |
2739 | /* MUST advance bufptr here to avoid bogus | |
2740 | "at end of line" context messages from yyerror(). | |
2741 | */ | |
2742 | PL_bufptr = s + len; | |
2743 | yyerror("Unterminated attribute parameter in attribute list"); | |
2744 | if (attrs) | |
2745 | op_free(attrs); | |
2746 | return 0; /* EOF indicator */ | |
2747 | } | |
2748 | } | |
2749 | if (PL_lex_stuff) { | |
2750 | SV *sv = newSVpvn(s, len); | |
2751 | sv_catsv(sv, PL_lex_stuff); | |
2752 | attrs = append_elem(OP_LIST, attrs, | |
2753 | newSVOP(OP_CONST, 0, sv)); | |
2754 | SvREFCNT_dec(PL_lex_stuff); | |
2755 | PL_lex_stuff = Nullsv; | |
2756 | } | |
2757 | else { | |
2758 | attrs = append_elem(OP_LIST, attrs, | |
2759 | newSVOP(OP_CONST, 0, | |
2760 | newSVpvn(s, len))); | |
2761 | } | |
2762 | s = skipspace(d); | |
2763 | while (*s == ',') | |
2764 | s = skipspace(s+1); | |
2765 | } | |
2766 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}' for vi */ | |
2767 | if (*s != ';' && *s != tmp) { | |
2768 | char q = ((*s == '\'') ? '"' : '\''); | |
2769 | /* If here for an expression, and parsed no attrs, back off. */ | |
2770 | if (tmp == '=' && !attrs) { | |
2771 | s = PL_bufptr; | |
2772 | break; | |
2773 | } | |
2774 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
2775 | context messages from yyerror(). | |
2776 | */ | |
2777 | PL_bufptr = s; | |
2778 | if (!*s) | |
2779 | yyerror("Unterminated attribute list"); | |
2780 | else | |
2781 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
2782 | q, *s, q)); | |
2783 | if (attrs) | |
2784 | op_free(attrs); | |
2785 | OPERATOR(':'); | |
2786 | } | |
2787 | if (attrs) { | |
2788 | PL_nextval[PL_nexttoke].opval = attrs; | |
2789 | force_next(THING); | |
2790 | } | |
2791 | TOKEN(COLONATTR); | |
2792 | } | |
a0d0e21e | 2793 | OPERATOR(':'); |
8990e307 LW |
2794 | case '(': |
2795 | s++; | |
3280af22 NIS |
2796 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
2797 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 2798 | else |
3280af22 | 2799 | PL_expect = XTERM; |
a0d0e21e | 2800 | TOKEN('('); |
378cc40b | 2801 | case ';': |
57843af0 GS |
2802 | if (CopLINE(PL_curcop) < PL_copline) |
2803 | PL_copline = CopLINE(PL_curcop); | |
378cc40b LW |
2804 | tmp = *s++; |
2805 | OPERATOR(tmp); | |
2806 | case ')': | |
378cc40b | 2807 | tmp = *s++; |
16d20bd9 AD |
2808 | s = skipspace(s); |
2809 | if (*s == '{') | |
2810 | PREBLOCK(tmp); | |
378cc40b | 2811 | TERM(tmp); |
79072805 LW |
2812 | case ']': |
2813 | s++; | |
3280af22 | 2814 | if (PL_lex_brackets <= 0) |
d98d5fff | 2815 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 2816 | else |
3280af22 NIS |
2817 | --PL_lex_brackets; |
2818 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2819 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 2820 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 2821 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2822 | } |
2823 | } | |
4633a7c4 | 2824 | TERM(']'); |
79072805 LW |
2825 | case '{': |
2826 | leftbracket: | |
79072805 | 2827 | s++; |
3280af22 NIS |
2828 | if (PL_lex_brackets > 100) { |
2829 | char* newlb = Renew(PL_lex_brackstack, PL_lex_brackets + 1, char); | |
2830 | if (newlb != PL_lex_brackstack) { | |
8990e307 | 2831 | SAVEFREEPV(newlb); |
3280af22 | 2832 | PL_lex_brackstack = newlb; |
8990e307 LW |
2833 | } |
2834 | } | |
3280af22 | 2835 | switch (PL_expect) { |
a0d0e21e | 2836 | case XTERM: |
3280af22 | 2837 | if (PL_lex_formbrack) { |
a0d0e21e LW |
2838 | s--; |
2839 | PRETERMBLOCK(DO); | |
2840 | } | |
3280af22 NIS |
2841 | if (PL_oldoldbufptr == PL_last_lop) |
2842 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2843 | else |
3280af22 | 2844 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 2845 | OPERATOR(HASHBRACK); |
a0d0e21e | 2846 | case XOPERATOR: |
3280af22 | 2847 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) |
748a9306 | 2848 | s++; |
44a8e56a | 2849 | d = s; |
3280af22 NIS |
2850 | PL_tokenbuf[0] = '\0'; |
2851 | if (d < PL_bufend && *d == '-') { | |
2852 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 2853 | d++; |
3280af22 | 2854 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
44a8e56a | 2855 | d++; |
2856 | } | |
834a4ddd | 2857 | if (d < PL_bufend && isIDFIRST_lazy(d)) { |
3280af22 | 2858 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 2859 | FALSE, &len); |
3280af22 | 2860 | while (d < PL_bufend && (*d == ' ' || *d == '\t')) |
748a9306 LW |
2861 | d++; |
2862 | if (*d == '}') { | |
3280af22 | 2863 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 2864 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
2865 | if (minus) | |
2866 | force_next('-'); | |
748a9306 LW |
2867 | } |
2868 | } | |
2869 | /* FALL THROUGH */ | |
09bef843 | 2870 | case XATTRBLOCK: |
748a9306 | 2871 | case XBLOCK: |
3280af22 NIS |
2872 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
2873 | PL_expect = XSTATE; | |
a0d0e21e | 2874 | break; |
09bef843 | 2875 | case XATTRTERM: |
a0d0e21e | 2876 | case XTERMBLOCK: |
3280af22 NIS |
2877 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
2878 | PL_expect = XSTATE; | |
a0d0e21e LW |
2879 | break; |
2880 | default: { | |
2881 | char *t; | |
3280af22 NIS |
2882 | if (PL_oldoldbufptr == PL_last_lop) |
2883 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 2884 | else |
3280af22 | 2885 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 2886 | s = skipspace(s); |
09ecc4b6 | 2887 | if (*s == '}') |
a0d0e21e | 2888 | OPERATOR(HASHBRACK); |
b8a4b1be GS |
2889 | /* This hack serves to disambiguate a pair of curlies |
2890 | * as being a block or an anon hash. Normally, expectation | |
2891 | * determines that, but in cases where we're not in a | |
2892 | * position to expect anything in particular (like inside | |
2893 | * eval"") we have to resolve the ambiguity. This code | |
2894 | * covers the case where the first term in the curlies is a | |
2895 | * quoted string. Most other cases need to be explicitly | |
2896 | * disambiguated by prepending a `+' before the opening | |
2897 | * curly in order to force resolution as an anon hash. | |
2898 | * | |
2899 | * XXX should probably propagate the outer expectation | |
2900 | * into eval"" to rely less on this hack, but that could | |
2901 | * potentially break current behavior of eval"". | |
2902 | * GSAR 97-07-21 | |
2903 | */ | |
2904 | t = s; | |
2905 | if (*s == '\'' || *s == '"' || *s == '`') { | |
2906 | /* common case: get past first string, handling escapes */ | |
3280af22 | 2907 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
2908 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
2909 | t++; | |
2910 | t++; | |
a0d0e21e | 2911 | } |
b8a4b1be | 2912 | else if (*s == 'q') { |
3280af22 | 2913 | if (++t < PL_bufend |
b8a4b1be | 2914 | && (!isALNUM(*t) |
3280af22 | 2915 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
b8a4b1be GS |
2916 | && !isALNUM(*t)))) { |
2917 | char *tmps; | |
2918 | char open, close, term; | |
2919 | I32 brackets = 1; | |
2920 | ||
3280af22 | 2921 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be GS |
2922 | t++; |
2923 | term = *t; | |
2924 | open = term; | |
2925 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
2926 | term = tmps[5]; | |
2927 | close = term; | |
2928 | if (open == close) | |
3280af22 NIS |
2929 | for (t++; t < PL_bufend; t++) { |
2930 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 2931 | t++; |
6d07e5e9 | 2932 | else if (*t == open) |
b8a4b1be GS |
2933 | break; |
2934 | } | |
2935 | else | |
3280af22 NIS |
2936 | for (t++; t < PL_bufend; t++) { |
2937 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 2938 | t++; |
6d07e5e9 | 2939 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
2940 | break; |
2941 | else if (*t == open) | |
2942 | brackets++; | |
2943 | } | |
2944 | } | |
2945 | t++; | |
a0d0e21e | 2946 | } |
834a4ddd LW |
2947 | else if (isIDFIRST_lazy(s)) { |
2948 | for (t++; t < PL_bufend && isALNUM_lazy(t); t++) ; | |
a0d0e21e | 2949 | } |
3280af22 | 2950 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 2951 | t++; |
b8a4b1be GS |
2952 | /* if comma follows first term, call it an anon hash */ |
2953 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 2954 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 2955 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 2956 | OPERATOR(HASHBRACK); |
3280af22 | 2957 | if (PL_expect == XREF) |
4e4e412b | 2958 | PL_expect = XTERM; |
a0d0e21e | 2959 | else { |
3280af22 NIS |
2960 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
2961 | PL_expect = XSTATE; | |
a0d0e21e | 2962 | } |
8990e307 | 2963 | } |
a0d0e21e | 2964 | break; |
463ee0b2 | 2965 | } |
57843af0 | 2966 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 2967 | if (isSPACE(*s) || *s == '#') |
3280af22 | 2968 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 2969 | TOKEN('{'); |
378cc40b | 2970 | case '}': |
79072805 LW |
2971 | rightbracket: |
2972 | s++; | |
3280af22 | 2973 | if (PL_lex_brackets <= 0) |
d98d5fff | 2974 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 2975 | else |
3280af22 NIS |
2976 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
2977 | if (PL_lex_brackets < PL_lex_formbrack) | |
2978 | PL_lex_formbrack = 0; | |
2979 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
2980 | if (PL_lex_brackets == 0) { | |
2981 | if (PL_lex_fakebrack) { | |
2982 | PL_lex_state = LEX_INTERPEND; | |
2983 | PL_bufptr = s; | |
cea2e8a9 | 2984 | return yylex(); /* ignore fake brackets */ |
79072805 | 2985 | } |
fa83b5b6 | 2986 | if (*s == '-' && s[1] == '>') |
3280af22 | 2987 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 2988 | else if (*s != '[' && *s != '{') |
3280af22 | 2989 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
2990 | } |
2991 | } | |
3280af22 NIS |
2992 | if (PL_lex_brackets < PL_lex_fakebrack) { |
2993 | PL_bufptr = s; | |
2994 | PL_lex_fakebrack = 0; | |
cea2e8a9 | 2995 | return yylex(); /* ignore fake brackets */ |
748a9306 | 2996 | } |
79072805 LW |
2997 | force_next('}'); |
2998 | TOKEN(';'); | |
378cc40b LW |
2999 | case '&': |
3000 | s++; | |
3001 | tmp = *s++; | |
3002 | if (tmp == '&') | |
a0d0e21e | 3003 | AOPERATOR(ANDAND); |
378cc40b | 3004 | s--; |
3280af22 | 3005 | if (PL_expect == XOPERATOR) { |
834a4ddd | 3006 | if (ckWARN(WARN_SEMICOLON) && isIDFIRST_lazy(s) && PL_bufptr == PL_linestart) { |
57843af0 | 3007 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3008 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3009 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3010 | } |
79072805 | 3011 | BAop(OP_BIT_AND); |
463ee0b2 | 3012 | } |
79072805 | 3013 | |
3280af22 NIS |
3014 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3015 | if (*PL_tokenbuf) { | |
3016 | PL_expect = XOPERATOR; | |
3017 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3018 | } |
79072805 LW |
3019 | else |
3020 | PREREF('&'); | |
c07a80fd | 3021 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3022 | TERM('&'); |
3023 | ||
378cc40b LW |
3024 | case '|': |
3025 | s++; | |
3026 | tmp = *s++; | |
3027 | if (tmp == '|') | |
a0d0e21e | 3028 | AOPERATOR(OROR); |
378cc40b | 3029 | s--; |
79072805 | 3030 | BOop(OP_BIT_OR); |
378cc40b LW |
3031 | case '=': |
3032 | s++; | |
3033 | tmp = *s++; | |
3034 | if (tmp == '=') | |
79072805 LW |
3035 | Eop(OP_EQ); |
3036 | if (tmp == '>') | |
3037 | OPERATOR(','); | |
378cc40b | 3038 | if (tmp == '~') |
79072805 | 3039 | PMop(OP_MATCH); |
599cee73 | 3040 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
cea2e8a9 | 3041 | Perl_warner(aTHX_ WARN_SYNTAX, "Reversed %c= operator",(int)tmp); |
378cc40b | 3042 | s--; |
3280af22 NIS |
3043 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3044 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3045 | { |
3280af22 NIS |
3046 | if (PL_in_eval && !PL_rsfp) { |
3047 | d = PL_bufend; | |
a5f75d66 AD |
3048 | while (s < d) { |
3049 | if (*s++ == '\n') { | |
3050 | incline(s); | |
3051 | if (strnEQ(s,"=cut",4)) { | |
3052 | s = strchr(s,'\n'); | |
3053 | if (s) | |
3054 | s++; | |
3055 | else | |
3056 | s = d; | |
3057 | incline(s); | |
3058 | goto retry; | |
3059 | } | |
3060 | } | |
3061 | } | |
3062 | goto retry; | |
3063 | } | |
3280af22 NIS |
3064 | s = PL_bufend; |
3065 | PL_doextract = TRUE; | |
a0d0e21e LW |
3066 | goto retry; |
3067 | } | |
3280af22 | 3068 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3069 | char *t; |
51882d45 | 3070 | #ifdef PERL_STRICT_CR |
a0d0e21e | 3071 | for (t = s; *t == ' ' || *t == '\t'; t++) ; |
51882d45 GS |
3072 | #else |
3073 | for (t = s; *t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
3074 | #endif | |
a0d0e21e LW |
3075 | if (*t == '\n' || *t == '#') { |
3076 | s--; | |
3280af22 | 3077 | PL_expect = XBLOCK; |
a0d0e21e LW |
3078 | goto leftbracket; |
3079 | } | |
79072805 | 3080 | } |
a0d0e21e LW |
3081 | yylval.ival = 0; |
3082 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3083 | case '!': |
3084 | s++; | |
3085 | tmp = *s++; | |
3086 | if (tmp == '=') | |
79072805 | 3087 | Eop(OP_NE); |
378cc40b | 3088 | if (tmp == '~') |
79072805 | 3089 | PMop(OP_NOT); |
378cc40b LW |
3090 | s--; |
3091 | OPERATOR('!'); | |
3092 | case '<': | |
3280af22 | 3093 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3094 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3095 | check_uni(); |
79072805 LW |
3096 | if (s[1] == '<') |
3097 | s = scan_heredoc(s); | |
3098 | else | |
3099 | s = scan_inputsymbol(s); | |
3100 | TERM(sublex_start()); | |
378cc40b LW |
3101 | } |
3102 | s++; | |
3103 | tmp = *s++; | |
3104 | if (tmp == '<') | |
79072805 | 3105 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3106 | if (tmp == '=') { |
3107 | tmp = *s++; | |
3108 | if (tmp == '>') | |
79072805 | 3109 | Eop(OP_NCMP); |
395c3793 | 3110 | s--; |
79072805 | 3111 | Rop(OP_LE); |
395c3793 | 3112 | } |
378cc40b | 3113 | s--; |
79072805 | 3114 | Rop(OP_LT); |
378cc40b LW |
3115 | case '>': |
3116 | s++; | |
3117 | tmp = *s++; | |
3118 | if (tmp == '>') | |
79072805 | 3119 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3120 | if (tmp == '=') |
79072805 | 3121 | Rop(OP_GE); |
378cc40b | 3122 | s--; |
79072805 | 3123 | Rop(OP_GT); |
378cc40b LW |
3124 | |
3125 | case '$': | |
bbce6d69 | 3126 | CLINE; |
3127 | ||
3280af22 NIS |
3128 | if (PL_expect == XOPERATOR) { |
3129 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3130 | PL_expect = XTERM; | |
a0d0e21e | 3131 | depcom(); |
bbce6d69 | 3132 | return ','; /* grandfather non-comma-format format */ |
a0d0e21e | 3133 | } |
8990e307 | 3134 | } |
a0d0e21e | 3135 | |
834a4ddd | 3136 | if (s[1] == '#' && (isIDFIRST_lazy(s+2) || strchr("{$:+-", s[2]))) { |
3280af22 | 3137 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3138 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3139 | sizeof PL_tokenbuf - 1, FALSE); | |
3140 | if (PL_expect == XOPERATOR) | |
3141 | no_op("Array length", s); | |
3280af22 | 3142 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3143 | PREREF(DOLSHARP); |
3280af22 NIS |
3144 | PL_expect = XOPERATOR; |
3145 | PL_pending_ident = '#'; | |
463ee0b2 | 3146 | TOKEN(DOLSHARP); |
79072805 | 3147 | } |
bbce6d69 | 3148 | |
3280af22 | 3149 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3150 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3151 | sizeof PL_tokenbuf - 1, FALSE); | |
3152 | if (PL_expect == XOPERATOR) | |
3153 | no_op("Scalar", s); | |
3280af22 NIS |
3154 | if (!PL_tokenbuf[1]) { |
3155 | if (s == PL_bufend) | |
bbce6d69 | 3156 | yyerror("Final $ should be \\$ or $name"); |
3157 | PREREF('$'); | |
8990e307 | 3158 | } |
a0d0e21e | 3159 | |
bbce6d69 | 3160 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3161 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3162 | yylval.opval = newSVOP(OP_CONST, 0, |
3280af22 | 3163 | newSViv((IV)PL_compiling.cop_arybase)); |
bbce6d69 | 3164 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3165 | TERM(THING); | |
3166 | } | |
3167 | ||
ff68c719 | 3168 | d = s; |
69d2bceb | 3169 | tmp = (I32)*s; |
3280af22 | 3170 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3171 | s = skipspace(s); |
3172 | ||
3280af22 | 3173 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3174 | char *t; |
3175 | if (*s == '[') { | |
3280af22 | 3176 | PL_tokenbuf[0] = '@'; |
599cee73 | 3177 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3178 | for(t = s + 1; |
834a4ddd | 3179 | isSPACE(*t) || isALNUM_lazy(t) || *t == '$'; |
bbce6d69 | 3180 | t++) ; |
a0d0e21e | 3181 | if (*t++ == ',') { |
3280af22 NIS |
3182 | PL_bufptr = skipspace(PL_bufptr); |
3183 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3184 | t++; |
cea2e8a9 | 3185 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 PM |
3186 | "Multidimensional syntax %.*s not supported", |
3187 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3188 | } |
3189 | } | |
bbce6d69 | 3190 | } |
3191 | else if (*s == '{') { | |
3280af22 | 3192 | PL_tokenbuf[0] = '%'; |
599cee73 | 3193 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3194 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3195 | { | |
3280af22 | 3196 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3197 | STRLEN len; |
3198 | for (t++; isSPACE(*t); t++) ; | |
834a4ddd | 3199 | if (isIDFIRST_lazy(t)) { |
8903cb82 | 3200 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3201 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3202 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
cea2e8a9 | 3203 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3204 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3205 | } |
93a17b20 LW |
3206 | } |
3207 | } | |
2f3197b3 | 3208 | } |
bbce6d69 | 3209 | |
3280af22 | 3210 | PL_expect = XOPERATOR; |
69d2bceb | 3211 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3212 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3213 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3214 | PL_expect = XOPERATOR; | |
bbce6d69 | 3215 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3216 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
834a4ddd | 3217 | else if (strchr("&*<%", *s) && isIDFIRST_lazy(s+1)) |
3280af22 | 3218 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
834a4ddd | 3219 | else if (isIDFIRST_lazy(s)) { |
3280af22 | 3220 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3221 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
84902520 TB |
3222 | if (tmp = keyword(tmpbuf, len)) { |
3223 | /* binary operators exclude handle interpretations */ | |
3224 | switch (tmp) { | |
3225 | case -KEY_x: | |
3226 | case -KEY_eq: | |
3227 | case -KEY_ne: | |
3228 | case -KEY_gt: | |
3229 | case -KEY_lt: | |
3230 | case -KEY_ge: | |
3231 | case -KEY_le: | |
3232 | case -KEY_cmp: | |
3233 | break; | |
3234 | default: | |
3280af22 | 3235 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3236 | break; |
3237 | } | |
3238 | } | |
68dc0745 | 3239 | else { |
3240 | GV *gv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
3241 | if (gv && GvCVu(gv)) | |
3280af22 | 3242 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3243 | } |
93a17b20 | 3244 | } |
bbce6d69 | 3245 | else if (isDIGIT(*s)) |
3280af22 | 3246 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3247 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3248 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
e0587a03 | 3249 | else if (strchr("/?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3280af22 | 3250 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
e0587a03 | 3251 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3252 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3253 | } |
3280af22 | 3254 | PL_pending_ident = '$'; |
79072805 | 3255 | TOKEN('$'); |
378cc40b LW |
3256 | |
3257 | case '@': | |
3280af22 | 3258 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3259 | no_op("Array", s); |
3280af22 NIS |
3260 | PL_tokenbuf[0] = '@'; |
3261 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3262 | if (!PL_tokenbuf[1]) { | |
3263 | if (s == PL_bufend) | |
bbce6d69 | 3264 | yyerror("Final @ should be \\@ or @name"); |
3265 | PREREF('@'); | |
3266 | } | |
3280af22 | 3267 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3268 | s = skipspace(s); |
3280af22 | 3269 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3270 | if (*s == '{') |
3280af22 | 3271 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3272 | |
3273 | /* Warn about @ where they meant $. */ | |
599cee73 | 3274 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3275 | if (*s == '[' || *s == '{') { |
3276 | char *t = s + 1; | |
834a4ddd | 3277 | while (*t && (isALNUM_lazy(t) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3278 | t++; |
3279 | if (*t == '}' || *t == ']') { | |
3280 | t++; | |
3280af22 | 3281 | PL_bufptr = skipspace(PL_bufptr); |
cea2e8a9 | 3282 | Perl_warner(aTHX_ WARN_SYNTAX, |
599cee73 | 3283 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3284 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3285 | } |
93a17b20 LW |
3286 | } |
3287 | } | |
463ee0b2 | 3288 | } |
3280af22 | 3289 | PL_pending_ident = '@'; |
79072805 | 3290 | TERM('@'); |
378cc40b LW |
3291 | |
3292 | case '/': /* may either be division or pattern */ | |
3293 | case '?': /* may either be conditional or pattern */ | |
3280af22 | 3294 | if (PL_expect != XOPERATOR) { |
c277df42 | 3295 | /* Disable warning on "study /blah/" */ |
3280af22 NIS |
3296 | if (PL_oldoldbufptr == PL_last_uni |
3297 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
834a4ddd | 3298 | || memNE(PL_last_uni, "study", 5) || isALNUM_lazy(PL_last_uni+5))) |
c277df42 | 3299 | check_uni(); |
8782bef2 | 3300 | s = scan_pat(s,OP_MATCH); |
79072805 | 3301 | TERM(sublex_start()); |
378cc40b LW |
3302 | } |
3303 | tmp = *s++; | |
a687059c | 3304 | if (tmp == '/') |
79072805 | 3305 | Mop(OP_DIVIDE); |
378cc40b LW |
3306 | OPERATOR(tmp); |
3307 | ||
3308 | case '.': | |
51882d45 GS |
3309 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3310 | #ifdef PERL_STRICT_CR | |
3311 | && s[1] == '\n' | |
3312 | #else | |
3313 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3314 | #endif | |
3315 | && (s == PL_linestart || s[-1] == '\n') ) | |
3316 | { | |
3280af22 NIS |
3317 | PL_lex_formbrack = 0; |
3318 | PL_expect = XSTATE; | |
79072805 LW |
3319 | goto rightbracket; |
3320 | } | |
3280af22 | 3321 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3322 | tmp = *s++; |
a687059c LW |
3323 | if (*s == tmp) { |
3324 | s++; | |
2f3197b3 LW |
3325 | if (*s == tmp) { |
3326 | s++; | |
79072805 | 3327 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3328 | } |
3329 | else | |
79072805 | 3330 | yylval.ival = 0; |
378cc40b | 3331 | OPERATOR(DOTDOT); |
a687059c | 3332 | } |
3280af22 | 3333 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3334 | check_uni(); |
79072805 | 3335 | Aop(OP_CONCAT); |
378cc40b LW |
3336 | } |
3337 | /* FALL THROUGH */ | |
3338 | case '0': case '1': case '2': case '3': case '4': | |
3339 | case '5': case '6': case '7': case '8': case '9': | |
79072805 | 3340 | s = scan_num(s); |
3280af22 | 3341 | if (PL_expect == XOPERATOR) |
8990e307 | 3342 | no_op("Number",s); |
79072805 LW |
3343 | TERM(THING); |
3344 | ||
3345 | case '\'': | |
09bef843 | 3346 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3347 | if (PL_expect == XOPERATOR) { |
3348 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3349 | PL_expect = XTERM; | |
a0d0e21e LW |
3350 | depcom(); |
3351 | return ','; /* grandfather non-comma-format format */ | |
3352 | } | |
463ee0b2 | 3353 | else |
8990e307 | 3354 | no_op("String",s); |
463ee0b2 | 3355 | } |
79072805 | 3356 | if (!s) |
85e6fe83 | 3357 | missingterm((char*)0); |
79072805 LW |
3358 | yylval.ival = OP_CONST; |
3359 | TERM(sublex_start()); | |
3360 | ||
3361 | case '"': | |
09bef843 | 3362 | s = scan_str(s,FALSE,FALSE); |
3280af22 NIS |
3363 | if (PL_expect == XOPERATOR) { |
3364 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3365 | PL_expect = XTERM; | |
a0d0e21e LW |
3366 | depcom(); |
3367 | return ','; /* grandfather non-comma-format format */ | |
3368 | } | |
463ee0b2 | 3369 | else |
8990e307 | 3370 | no_op("String",s); |
463ee0b2 | 3371 | } |
79072805 | 3372 | if (!s) |
85e6fe83 | 3373 | missingterm((char*)0); |
4633a7c4 | 3374 | yylval.ival = OP_CONST; |
3280af22 | 3375 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
a0ed51b3 | 3376 | if (*d == '$' || *d == '@' || *d == '\\' || *d & 0x80) { |
4633a7c4 LW |
3377 | yylval.ival = OP_STRINGIFY; |
3378 | break; | |
3379 | } | |
3380 | } | |
79072805 LW |
3381 | TERM(sublex_start()); |
3382 | ||
3383 | case '`': | |
09bef843 | 3384 | s = scan_str(s,FALSE,FALSE); |
3280af22 | 3385 | if (PL_expect == XOPERATOR) |
8990e307 | 3386 | no_op("Backticks",s); |
79072805 | 3387 | if (!s) |
85e6fe83 | 3388 | missingterm((char*)0); |
79072805 LW |
3389 | yylval.ival = OP_BACKTICK; |
3390 | set_csh(); | |
3391 | TERM(sublex_start()); | |
3392 | ||
3393 | case '\\': | |
3394 | s++; | |
599cee73 | 3395 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
cea2e8a9 | 3396 | Perl_warner(aTHX_ WARN_SYNTAX,"Can't use \\%c to mean $%c in expression", |
599cee73 | 3397 | *s, *s); |
3280af22 | 3398 | if (PL_expect == XOPERATOR) |
8990e307 | 3399 | no_op("Backslash",s); |
79072805 LW |
3400 | OPERATOR(REFGEN); |
3401 | ||
3402 | case 'x': | |
3280af22 | 3403 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3404 | s++; |
3405 | Mop(OP_REPEAT); | |
2f3197b3 | 3406 | } |
79072805 LW |
3407 | goto keylookup; |
3408 | ||
378cc40b | 3409 | case '_': |
79072805 LW |
3410 | case 'a': case 'A': |
3411 | case 'b': case 'B': | |
3412 | case 'c': case 'C': | |
3413 | case 'd': case 'D': | |
3414 | case 'e': case 'E': | |
3415 | case 'f': case 'F': | |
3416 | case 'g': case 'G': | |
3417 | case 'h': case 'H': | |
3418 | case 'i': case 'I': | |
3419 | case 'j': case 'J': | |
3420 | case 'k': case 'K': | |
3421 | case 'l': case 'L': | |
3422 | case 'm': case 'M': | |
3423 | case 'n': case 'N': | |
3424 | case 'o': case 'O': | |
3425 | case 'p': case 'P': | |
3426 | case 'q': case 'Q': | |
3427 | case 'r': case 'R': | |
3428 | case 's': case 'S': | |
3429 | case 't': case 'T': | |
3430 | case 'u': case 'U': | |
3431 | case 'v': case 'V': | |
3432 | case 'w': case 'W': | |
3433 | case 'X': | |
3434 | case 'y': case 'Y': | |
3435 | case 'z': case 'Z': | |
3436 | ||
49dc05e3 | 3437 | keylookup: { |
2d8e6c8d | 3438 | STRLEN n_a; |
161b471a NIS |
3439 | gv = Nullgv; |
3440 | gvp = 0; | |
49dc05e3 | 3441 | |
3280af22 NIS |
3442 | PL_bufptr = s; |
3443 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3444 | |
3445 | /* Some keywords can be followed by any delimiter, including ':' */ | |
3280af22 NIS |
3446 | tmp = (len == 1 && strchr("msyq", PL_tokenbuf[0]) || |
3447 | len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3448 | (PL_tokenbuf[0] == 'q' && | |
3449 | strchr("qwxr", PL_tokenbuf[1])))); | |
8ebc5c01 | 3450 | |
3451 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3452 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3453 | goto just_a_word; |
3454 | ||
3643fb5f | 3455 | d = s; |
3280af22 | 3456 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3457 | d++; /* no comments skipped here, or s### is misparsed */ |
3458 | ||
3459 | /* Is this a label? */ | |
3280af22 NIS |
3460 | if (!tmp && PL_expect == XSTATE |
3461 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3462 | s = d + 1; |
3280af22 | 3463 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3464 | CLINE; |
3465 | TOKEN(LABEL); | |
3643fb5f CS |
3466 | } |
3467 | ||
3468 | /* Check for keywords */ | |
3280af22 | 3469 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3470 | |
3471 | /* Is this a word before a => operator? */ | |
748a9306 LW |
3472 | if (strnEQ(d,"=>",2)) { |
3473 | CLINE; | |
3280af22 | 3474 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 LW |
3475 | yylval.opval->op_private = OPpCONST_BARE; |
3476 | TERM(WORD); | |
3477 | } | |
3478 | ||
a0d0e21e | 3479 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
3480 | GV *ogv = Nullgv; /* override (winner) */ |
3481 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 3482 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 3483 | CV *cv; |
3280af22 | 3484 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
3485 | (cv = GvCVu(gv))) |
3486 | { | |
3487 | if (GvIMPORTED_CV(gv)) | |
3488 | ogv = gv; | |
3489 | else if (! CvMETHOD(cv)) | |
3490 | hgv = gv; | |
3491 | } | |
3492 | if (!ogv && | |
3280af22 NIS |
3493 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
3494 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
3495 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
3496 | { | |
3497 | ogv = gv; | |
3498 | } | |
3499 | } | |
3500 | if (ogv) { | |
3501 | tmp = 0; /* overridden by import or by GLOBAL */ | |
6e7b2336 GS |
3502 | } |
3503 | else if (gv && !gvp | |
3504 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
3280af22 | 3505 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
3506 | { |
3507 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 3508 | } |
56f7f34b CS |
3509 | else { /* no override */ |
3510 | tmp = -tmp; | |
3511 | gv = Nullgv; | |
3512 | gvp = 0; | |
4944e2f7 GS |
3513 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
3514 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
cea2e8a9 | 3515 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 3516 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 3517 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 3518 | } |
a0d0e21e LW |
3519 | } |
3520 | ||
3521 | reserved_word: | |
3522 | switch (tmp) { | |
79072805 LW |
3523 | |
3524 | default: /* not a keyword */ | |
93a17b20 | 3525 | just_a_word: { |
96e4d5b1 | 3526 | SV *sv; |
3280af22 | 3527 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
3528 | |
3529 | /* Get the rest if it looks like a package qualifier */ | |
3530 | ||
a0d0e21e | 3531 | if (*s == '\'' || *s == ':' && s[1] == ':') { |
c3e0f903 | 3532 | STRLEN morelen; |
3280af22 | 3533 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
3534 | TRUE, &morelen); |
3535 | if (!morelen) | |
cea2e8a9 | 3536 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 3537 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 3538 | len += morelen; |
a0d0e21e | 3539 | } |
8990e307 | 3540 | |
3280af22 NIS |
3541 | if (PL_expect == XOPERATOR) { |
3542 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 3543 | CopLINE_dec(PL_curcop); |
cea2e8a9 | 3544 | Perl_warner(aTHX_ WARN_SEMICOLON, PL_warn_nosemi); |
57843af0 | 3545 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
3546 | } |
3547 | else | |
54310121 | 3548 | no_op("Bareword",s); |
463ee0b2 | 3549 | } |
8990e307 | 3550 | |
c3e0f903 GS |
3551 | /* Look for a subroutine with this name in current package, |
3552 | unless name is "Foo::", in which case Foo is a bearword | |
3553 | (and a package name). */ | |
3554 | ||
3555 | if (len > 2 && | |
3280af22 | 3556 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 3557 | { |
599cee73 | 3558 | if (ckWARN(WARN_UNSAFE) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
cea2e8a9 | 3559 | Perl_warner(aTHX_ WARN_UNSAFE, |
599cee73 | 3560 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 3561 | PL_tokenbuf); |
c3e0f903 | 3562 | len -= 2; |
3280af22 | 3563 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
3564 | gv = Nullgv; |
3565 | gvp = 0; | |
3566 | } | |
3567 | else { | |
3568 | len = 0; | |
3569 | if (!gv) | |
3280af22 | 3570 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
3571 | } |
3572 | ||
3573 | /* if we saw a global override before, get the right name */ | |
8990e307 | 3574 | |
49dc05e3 | 3575 | if (gvp) { |
79cb57f6 | 3576 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 3577 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
3578 | } |
3579 | else | |
3280af22 | 3580 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 3581 | |
a0d0e21e LW |
3582 | /* Presume this is going to be a bareword of some sort. */ |
3583 | ||
3584 | CLINE; | |
49dc05e3 | 3585 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e LW |
3586 | yylval.opval->op_private = OPpCONST_BARE; |
3587 | ||
c3e0f903 GS |
3588 | /* And if "Foo::", then that's what it certainly is. */ |
3589 | ||
3590 | if (len) | |
3591 | goto safe_bareword; | |
3592 | ||
8990e307 LW |
3593 | /* See if it's the indirect object for a list operator. */ |
3594 | ||
3280af22 NIS |
3595 | if (PL_oldoldbufptr && |
3596 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
3597 | (PL_oldoldbufptr == PL_last_lop |
3598 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 3599 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
3600 | (PL_expect == XREF || |
3601 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 3602 | { |
748a9306 LW |
3603 | bool immediate_paren = *s == '('; |
3604 | ||
a0d0e21e LW |
3605 | /* (Now we can afford to cross potential line boundary.) */ |
3606 | s = skipspace(s); | |
3607 | ||
3608 | /* Two barewords in a row may indicate method call. */ | |
3609 | ||
834a4ddd | 3610 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp=intuit_method(s,gv))) |
a0d0e21e LW |
3611 | return tmp; |
3612 | ||
3613 | /* If not a declared subroutine, it's an indirect object. */ | |
3614 | /* (But it's an indir obj regardless for sort.) */ | |
3615 | ||
3280af22 | 3616 | if ((PL_last_lop_op == OP_SORT || |
a9ef352a GS |
3617 | (!immediate_paren && (!gv || !GvCVu(gv)))) && |
3618 | (PL_last_lop_op != OP_MAPSTART && | |
3619 | PL_last_lop_op != OP_GREPSTART)) | |
3620 | { | |
3280af22 | 3621 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 3622 | goto bareword; |
93a17b20 LW |
3623 | } |
3624 | } | |
8990e307 LW |
3625 | |
3626 | /* If followed by a paren, it's certainly a subroutine. */ | |
3627 | ||
3280af22 | 3628 | PL_expect = XOPERATOR; |
8990e307 | 3629 | s = skipspace(s); |
93a17b20 | 3630 | if (*s == '(') { |
79072805 | 3631 | CLINE; |
96e4d5b1 | 3632 | if (gv && GvCVu(gv)) { |
3633 | for (d = s + 1; *d == ' ' || *d == '\t'; d++) ; | |
7a52d87a | 3634 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 3635 | s = d + 1; |
3636 | goto its_constant; | |
3637 | } | |
3638 | } | |
3280af22 NIS |
3639 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3640 | PL_expect = XOPERATOR; | |
93a17b20 | 3641 | force_next(WORD); |
c07a80fd | 3642 | yylval.ival = 0; |
463ee0b2 | 3643 | TOKEN('&'); |
79072805 | 3644 | } |
93a17b20 | 3645 | |
a0d0e21e | 3646 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 3647 | |
8ebc5c01 | 3648 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
3649 | PL_last_lop = PL_oldbufptr; |
3650 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 3651 | PREBLOCK(METHOD); |
463ee0b2 LW |
3652 | } |
3653 | ||
8990e307 LW |
3654 | /* If followed by a bareword, see if it looks like indir obj. */ |
3655 | ||
834a4ddd | 3656 | if ((isIDFIRST_lazy(s) || *s == '$') && (tmp = intuit_method(s,gv))) |
a0d0e21e | 3657 | return tmp; |
93a17b20 | 3658 | |
8990e307 LW |
3659 | /* Not a method, so call it a subroutine (if defined) */ |
3660 | ||
8ebc5c01 | 3661 | if (gv && GvCVu(gv)) { |
46fc3d4c | 3662 | CV* cv; |
0453d815 PM |
3663 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
3664 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
3665 | "Ambiguous use of -%s resolved as -&%s()", | |
3280af22 | 3666 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 3667 | /* Check for a constant sub */ |
46fc3d4c | 3668 | cv = GvCV(gv); |
96e4d5b1 | 3669 | if ((sv = cv_const_sv(cv))) { |
3670 | its_constant: | |
3671 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
3672 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
3673 | yylval.opval->op_private = 0; | |
3674 | TOKEN(WORD); | |
89bfa8cd | 3675 | } |
3676 | ||
a5f75d66 AD |
3677 | /* Resolve to GV now. */ |
3678 | op_free(yylval.opval); | |
3679 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 3680 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 3681 | PL_last_lop = PL_oldbufptr; |
bf848113 | 3682 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
3683 | /* Is there a prototype? */ |
3684 | if (SvPOK(cv)) { | |
3685 | STRLEN len; | |
7a52d87a | 3686 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
3687 | if (!len) |
3688 | TERM(FUNC0SUB); | |
7a52d87a | 3689 | if (strEQ(proto, "$")) |
4633a7c4 | 3690 | OPERATOR(UNIOPSUB); |
7a52d87a | 3691 | if (*proto == '&' && *s == '{') { |
3280af22 | 3692 | sv_setpv(PL_subname,"__ANON__"); |
4633a7c4 LW |
3693 | PREBLOCK(LSTOPSUB); |
3694 | } | |
a9ef352a | 3695 | } |
3280af22 NIS |
3696 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
3697 | PL_expect = XTERM; | |
8990e307 LW |
3698 | force_next(WORD); |
3699 | TOKEN(NOAMP); | |
3700 | } | |
748a9306 | 3701 | |
8990e307 LW |
3702 | /* Call it a bare word */ |
3703 | ||
5603f27d GS |
3704 | if (PL_hints & HINT_STRICT_SUBS) |
3705 | yylval.opval->op_private |= OPpCONST_STRICT; | |
3706 | else { | |
3707 | bareword: | |
3708 | if (ckWARN(WARN_RESERVED)) { | |
3709 | if (lastchar != '-') { | |
3710 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
3711 | if (!*d) | |
cea2e8a9 | 3712 | Perl_warner(aTHX_ WARN_RESERVED, PL_warn_reserved, |
5603f27d GS |
3713 | PL_tokenbuf); |
3714 | } | |
748a9306 LW |
3715 | } |
3716 | } | |
c3e0f903 GS |
3717 | |
3718 | safe_bareword: | |
f248d071 | 3719 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
0453d815 PM |
3720 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3721 | "Operator or semicolon missing before %c%s", | |
3280af22 | 3722 | lastchar, PL_tokenbuf); |
0453d815 PM |
3723 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
3724 | "Ambiguous use of %c resolved as operator %c", | |
748a9306 LW |
3725 | lastchar, lastchar); |
3726 | } | |
93a17b20 | 3727 | TOKEN(WORD); |
79072805 | 3728 | } |
79072805 | 3729 | |
68dc0745 | 3730 | case KEY___FILE__: |
46fc3d4c | 3731 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
cc49e20b | 3732 | newSVsv(CopFILESV(PL_curcop))); |
46fc3d4c | 3733 | TERM(THING); |
3734 | ||
79072805 | 3735 | case KEY___LINE__: |
cf2093f6 | 3736 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 3737 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 3738 | TERM(THING); |
68dc0745 | 3739 | |
3740 | case KEY___PACKAGE__: | |
3741 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 NIS |
3742 | (PL_curstash |
3743 | ? newSVsv(PL_curstname) | |
3744 | : &PL_sv_undef)); | |
79072805 | 3745 | TERM(THING); |
79072805 | 3746 | |
e50aee73 | 3747 | case KEY___DATA__: |
79072805 LW |
3748 | case KEY___END__: { |
3749 | GV *gv; | |
79072805 LW |
3750 | |
3751 | /*SUPPRESS 560*/ | |
3280af22 | 3752 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 3753 | char *pname = "main"; |
3280af22 NIS |
3754 | if (PL_tokenbuf[2] == 'D') |
3755 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 3756 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 3757 | GvMULTI_on(gv); |
79072805 | 3758 | if (!GvIO(gv)) |
a0d0e21e | 3759 | GvIOp(gv) = newIO(); |
3280af22 | 3760 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
3761 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
3762 | { | |
3280af22 | 3763 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
3764 | fcntl(fd,F_SETFD,fd >= 3); |
3765 | } | |
79072805 | 3766 | #endif |
fd049845 | 3767 | /* Mark this internal pseudo-handle as clean */ |
3768 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 3769 | if (PL_preprocess) |
a0d0e21e | 3770 | IoTYPE(GvIOp(gv)) = '|'; |
3280af22 | 3771 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
a0d0e21e | 3772 | IoTYPE(GvIOp(gv)) = '-'; |
79072805 | 3773 | else |
a0d0e21e | 3774 | IoTYPE(GvIOp(gv)) = '<'; |
3280af22 | 3775 | PL_rsfp = Nullfp; |
79072805 LW |
3776 | } |
3777 | goto fake_eof; | |
e929a76b | 3778 | } |
de3bb511 | 3779 | |
8990e307 | 3780 | case KEY_AUTOLOAD: |
ed6116ce | 3781 | case KEY_DESTROY: |
79072805 LW |
3782 | case KEY_BEGIN: |
3783 | case KEY_END: | |
4f25aa18 | 3784 | case KEY_STOP: |
7d07dbc2 | 3785 | case KEY_INIT: |
3280af22 NIS |
3786 | if (PL_expect == XSTATE) { |
3787 | s = PL_bufptr; | |
93a17b20 | 3788 | goto really_sub; |
79072805 LW |
3789 | } |
3790 | goto just_a_word; | |
3791 | ||
a0d0e21e LW |
3792 | case KEY_CORE: |
3793 | if (*s == ':' && s[1] == ':') { | |
3794 | s += 2; | |
748a9306 | 3795 | d = s; |
3280af22 NIS |
3796 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
3797 | tmp = keyword(PL_tokenbuf, len); | |
a0d0e21e LW |
3798 | if (tmp < 0) |
3799 | tmp = -tmp; | |
3800 | goto reserved_word; | |
3801 | } | |
3802 | goto just_a_word; | |
3803 | ||
463ee0b2 LW |
3804 | case KEY_abs: |
3805 | UNI(OP_ABS); | |
3806 | ||
79072805 LW |
3807 | case KEY_alarm: |
3808 | UNI(OP_ALARM); | |
3809 | ||
3810 | case KEY_accept: | |
a0d0e21e | 3811 | LOP(OP_ACCEPT,XTERM); |
79072805 | 3812 | |
463ee0b2 LW |
3813 | case KEY_and: |
3814 | OPERATOR(ANDOP); | |
3815 | ||
79072805 | 3816 | case KEY_atan2: |
a0d0e21e | 3817 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 3818 | |
79072805 | 3819 | case KEY_bind: |
a0d0e21e | 3820 | LOP(OP_BIND,XTERM); |
79072805 LW |
3821 | |
3822 | case KEY_binmode: | |
3823 | UNI(OP_BINMODE); | |
3824 | ||
3825 | case KEY_bless: | |
a0d0e21e | 3826 | LOP(OP_BLESS,XTERM); |
79072805 LW |
3827 | |
3828 | case KEY_chop: | |
3829 | UNI(OP_CHOP); | |
3830 | ||
3831 | case KEY_continue: | |
3832 | PREBLOCK(CONTINUE); | |
3833 | ||
3834 | case KEY_chdir: | |
85e6fe83 | 3835 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
3836 | UNI(OP_CHDIR); |
3837 | ||
3838 | case KEY_close: | |
3839 | UNI(OP_CLOSE); | |
3840 | ||
3841 | case KEY_closedir: | |
3842 | UNI(OP_CLOSEDIR); | |
3843 | ||
3844 | case KEY_cmp: | |
3845 | Eop(OP_SCMP); | |
3846 | ||
3847 | case KEY_caller: | |
3848 | UNI(OP_CALLER); | |
3849 | ||
3850 | case KEY_crypt: | |
3851 | #ifdef FCRYPT | |
f4c556ac GS |
3852 | if (!PL_cryptseen) { |
3853 | PL_cryptseen = TRUE; | |
de3bb511 | 3854 | init_des(); |
f4c556ac | 3855 | } |
a687059c | 3856 | #endif |
a0d0e21e | 3857 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
3858 | |
3859 | case KEY_chmod: | |
599cee73 | 3860 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 3861 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
748a9306 | 3862 | if (*d != '0' && isDIGIT(*d)) |
4438c4b7 JH |
3863 | Perl_warner(aTHX_ WARN_OCTAL, |
3864 | "chmod: mode argument is missing initial 0"); | |
748a9306 | 3865 | } |
a0d0e21e | 3866 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
3867 | |
3868 | case KEY_chown: | |
a0d0e21e | 3869 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
3870 | |
3871 | case KEY_connect: | |
a0d0e21e | 3872 | LOP(OP_CONNECT,XTERM); |
79072805 | 3873 | |
463ee0b2 LW |
3874 | case KEY_chr: |
3875 | UNI(OP_CHR); | |
3876 | ||
79072805 LW |
3877 | case KEY_cos: |
3878 | UNI(OP_COS); | |
3879 | ||
3880 | case KEY_chroot: | |
3881 | UNI(OP_CHROOT); | |
3882 | ||
3883 | case KEY_do: | |
3884 | s = skipspace(s); | |
3885 | if (*s == '{') | |
a0d0e21e | 3886 | PRETERMBLOCK(DO); |
79072805 | 3887 | if (*s != '\'') |
a0d0e21e | 3888 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
378cc40b | 3889 | OPERATOR(DO); |
79072805 LW |
3890 | |
3891 | case KEY_die: | |
3280af22 | 3892 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 3893 | LOP(OP_DIE,XTERM); |
79072805 LW |
3894 | |
3895 | case KEY_defined: | |
3896 | UNI(OP_DEFINED); | |
3897 | ||
3898 | case KEY_delete: | |
a0d0e21e | 3899 | UNI(OP_DELETE); |
79072805 LW |
3900 | |
3901 | case KEY_dbmopen: | |
a0d0e21e LW |
3902 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
3903 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
3904 | |
3905 | case KEY_dbmclose: | |
3906 | UNI(OP_DBMCLOSE); | |
3907 | ||
3908 | case KEY_dump: | |
a0d0e21e | 3909 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
3910 | LOOPX(OP_DUMP); |
3911 | ||
3912 | case KEY_else: | |
3913 | PREBLOCK(ELSE); | |
3914 | ||
3915 | case KEY_elsif: | |
57843af0 | 3916 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
3917 | OPERATOR(ELSIF); |
3918 | ||
3919 | case KEY_eq: | |
3920 | Eop(OP_SEQ); | |
3921 | ||
a0d0e21e LW |
3922 | case KEY_exists: |
3923 | UNI(OP_EXISTS); | |
3924 | ||
79072805 LW |
3925 | case KEY_exit: |
3926 | UNI(OP_EXIT); | |
3927 | ||
3928 | case KEY_eval: | |
79072805 | 3929 | s = skipspace(s); |
3280af22 | 3930 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 3931 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
3932 | |
3933 | case KEY_eof: | |
3934 | UNI(OP_EOF); | |
3935 | ||
3936 | case KEY_exp: | |
3937 | UNI(OP_EXP); | |
3938 | ||
3939 | case KEY_each: | |
3940 | UNI(OP_EACH); | |
3941 | ||
3942 | case KEY_exec: | |
3943 | set_csh(); | |
a0d0e21e | 3944 | LOP(OP_EXEC,XREF); |
79072805 LW |
3945 | |
3946 | case KEY_endhostent: | |
3947 | FUN0(OP_EHOSTENT); | |
3948 | ||
3949 | case KEY_endnetent: | |
3950 | FUN0(OP_ENETENT); | |
3951 | ||
3952 | case KEY_endservent: | |
3953 | FUN0(OP_ESERVENT); | |
3954 | ||
3955 | case KEY_endprotoent: | |
3956 | FUN0(OP_EPROTOENT); | |
3957 | ||
3958 | case KEY_endpwent: | |
3959 | FUN0(OP_EPWENT); | |
3960 | ||
3961 | case KEY_endgrent: | |
3962 | FUN0(OP_EGRENT); | |
3963 | ||
3964 | case KEY_for: | |
3965 | case KEY_foreach: | |
57843af0 | 3966 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 3967 | s = skipspace(s); |
834a4ddd | 3968 | if (PL_expect == XSTATE && isIDFIRST_lazy(s)) { |
55497cff | 3969 | char *p = s; |
3280af22 | 3970 | if ((PL_bufend - p) >= 3 && |
55497cff | 3971 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
3972 | p += 2; | |
77ca0c92 LW |
3973 | else if ((PL_bufend - p) >= 4 && |
3974 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
3975 | p += 3; | |
55497cff | 3976 | p = skipspace(p); |
77ca0c92 LW |
3977 | if (isIDFIRST_lazy(p)) { |
3978 | p = scan_ident(p, PL_bufend, | |
3979 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
3980 | p = skipspace(p); | |
3981 | } | |
3982 | if (*p != '$') | |
cea2e8a9 | 3983 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 3984 | } |
79072805 LW |
3985 | OPERATOR(FOR); |
3986 | ||
3987 | case KEY_formline: | |
a0d0e21e | 3988 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
3989 | |
3990 | case KEY_fork: | |
3991 | FUN0(OP_FORK); | |
3992 | ||
3993 | case KEY_fcntl: | |
a0d0e21e | 3994 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
3995 | |
3996 | case KEY_fileno: | |
3997 | UNI(OP_FILENO); | |
3998 | ||
3999 | case KEY_flock: | |
a0d0e21e | 4000 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4001 | |
4002 | case KEY_gt: | |
4003 | Rop(OP_SGT); | |
4004 | ||
4005 | case KEY_ge: | |
4006 | Rop(OP_SGE); | |
4007 | ||
4008 | case KEY_grep: | |
a0d0e21e | 4009 | LOP(OP_GREPSTART, *s == '(' ? XTERM : XREF); |
79072805 LW |
4010 | |
4011 | case KEY_goto: | |
a0d0e21e | 4012 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4013 | LOOPX(OP_GOTO); |
4014 | ||
4015 | case KEY_gmtime: | |
4016 | UNI(OP_GMTIME); | |
4017 | ||
4018 | case KEY_getc: | |
4019 | UNI(OP_GETC); | |
4020 | ||
4021 | case KEY_getppid: | |
4022 | FUN0(OP_GETPPID); | |
4023 | ||
4024 | case KEY_getpgrp: | |
4025 | UNI(OP_GETPGRP); | |
4026 | ||
4027 | case KEY_getpriority: | |
a0d0e21e | 4028 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4029 | |
4030 | case KEY_getprotobyname: | |
4031 | UNI(OP_GPBYNAME); | |
4032 | ||
4033 | case KEY_getprotobynumber: | |
a0d0e21e | 4034 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4035 | |
4036 | case KEY_getprotoent: | |
4037 | FUN0(OP_GPROTOENT); | |
4038 | ||
4039 | case KEY_getpwent: | |
4040 | FUN0(OP_GPWENT); | |
4041 | ||
4042 | case KEY_getpwnam: | |
ff68c719 | 4043 | UNI(OP_GPWNAM); |
79072805 LW |
4044 | |
4045 | case KEY_getpwuid: | |
ff68c719 | 4046 | UNI(OP_GPWUID); |
79072805 LW |
4047 | |
4048 | case KEY_getpeername: | |
4049 | UNI(OP_GETPEERNAME); | |
4050 | ||
4051 | case KEY_gethostbyname: | |
4052 | UNI(OP_GHBYNAME); | |
4053 | ||
4054 | case KEY_gethostbyaddr: | |
a0d0e21e | 4055 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4056 | |
4057 | case KEY_gethostent: | |
4058 | FUN0(OP_GHOSTENT); | |
4059 | ||
4060 | case KEY_getnetbyname: | |
4061 | UNI(OP_GNBYNAME); | |
4062 | ||
4063 | case KEY_getnetbyaddr: | |
a0d0e21e | 4064 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4065 | |
4066 | case KEY_getnetent: | |
4067 | FUN0(OP_GNETENT); | |
4068 | ||
4069 | case KEY_getservbyname: | |
a0d0e21e | 4070 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4071 | |
4072 | case KEY_getservbyport: | |
a0d0e21e | 4073 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4074 | |
4075 | case KEY_getservent: | |
4076 | FUN0(OP_GSERVENT); | |
4077 | ||
4078 | case KEY_getsockname: | |
4079 | UNI(OP_GETSOCKNAME); | |
4080 | ||
4081 | case KEY_getsockopt: | |
a0d0e21e | 4082 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4083 | |
4084 | case KEY_getgrent: | |
4085 | FUN0(OP_GGRENT); | |
4086 | ||
4087 | case KEY_getgrnam: | |
ff68c719 | 4088 | UNI(OP_GGRNAM); |
79072805 LW |
4089 | |
4090 | case KEY_getgrgid: | |
ff68c719 | 4091 | UNI(OP_GGRGID); |
79072805 LW |
4092 | |
4093 | case KEY_getlogin: | |
4094 | FUN0(OP_GETLOGIN); | |
4095 | ||
93a17b20 | 4096 | case KEY_glob: |
a0d0e21e LW |
4097 | set_csh(); |
4098 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4099 | |
79072805 LW |
4100 | case KEY_hex: |
4101 | UNI(OP_HEX); | |
4102 | ||
4103 | case KEY_if: | |
57843af0 | 4104 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4105 | OPERATOR(IF); |
4106 | ||
4107 | case KEY_index: | |
a0d0e21e | 4108 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4109 | |
4110 | case KEY_int: | |
4111 | UNI(OP_INT); | |
4112 | ||
4113 | case KEY_ioctl: | |
a0d0e21e | 4114 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4115 | |
4116 | case KEY_join: | |
a0d0e21e | 4117 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4118 | |
4119 | case KEY_keys: | |
4120 | UNI(OP_KEYS); | |
4121 | ||
4122 | case KEY_kill: | |
a0d0e21e | 4123 | LOP(OP_KILL,XTERM); |
79072805 LW |
4124 | |
4125 | case KEY_last: | |
a0d0e21e | 4126 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4127 | LOOPX(OP_LAST); |
a0d0e21e | 4128 | |
79072805 LW |
4129 | case KEY_lc: |
4130 | UNI(OP_LC); | |
4131 | ||
4132 | case KEY_lcfirst: | |
4133 | UNI(OP_LCFIRST); | |
4134 | ||
4135 | case KEY_local: | |
09bef843 | 4136 | yylval.ival = 0; |
79072805 LW |
4137 | OPERATOR(LOCAL); |
4138 | ||
4139 | case KEY_length: | |
4140 | UNI(OP_LENGTH); | |
4141 | ||
4142 | case KEY_lt: | |
4143 | Rop(OP_SLT); | |
4144 | ||
4145 | case KEY_le: | |
4146 | Rop(OP_SLE); | |
4147 | ||
4148 | case KEY_localtime: | |
4149 | UNI(OP_LOCALTIME); | |
4150 | ||
4151 | case KEY_log: | |
4152 | UNI(OP_LOG); | |
4153 | ||
4154 | case KEY_link: | |
a0d0e21e | 4155 | LOP(OP_LINK,XTERM); |
79072805 LW |
4156 | |
4157 | case KEY_listen: | |
a0d0e21e | 4158 | LOP(OP_LISTEN,XTERM); |
79072805 | 4159 | |
c0329465 MB |
4160 | case KEY_lock: |
4161 | UNI(OP_LOCK); | |
4162 | ||
79072805 LW |
4163 | case KEY_lstat: |
4164 | UNI(OP_LSTAT); | |
4165 | ||
4166 | case KEY_m: | |
8782bef2 | 4167 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4168 | TERM(sublex_start()); |
4169 | ||
a0d0e21e | 4170 | case KEY_map: |
4e4e412b GS |
4171 | LOP(OP_MAPSTART, *s == '(' ? XTERM : XREF); |
4172 | ||
79072805 | 4173 | case KEY_mkdir: |
a0d0e21e | 4174 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4175 | |
4176 | case KEY_msgctl: | |
a0d0e21e | 4177 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4178 | |
4179 | case KEY_msgget: | |
a0d0e21e | 4180 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4181 | |
4182 | case KEY_msgrcv: | |
a0d0e21e | 4183 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4184 | |
4185 | case KEY_msgsnd: | |
a0d0e21e | 4186 | LOP(OP_MSGSND,XTERM); |
79072805 | 4187 | |
77ca0c92 | 4188 | case KEY_our: |
93a17b20 | 4189 | case KEY_my: |
77ca0c92 | 4190 | PL_in_my = tmp; |
c750a3ec | 4191 | s = skipspace(s); |
834a4ddd | 4192 | if (isIDFIRST_lazy(s)) { |
3280af22 | 4193 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4194 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4195 | goto really_sub; | |
3280af22 NIS |
4196 | PL_in_my_stash = gv_stashpv(PL_tokenbuf, FALSE); |
4197 | if (!PL_in_my_stash) { | |
c750a3ec | 4198 | char tmpbuf[1024]; |
3280af22 NIS |
4199 | PL_bufptr = s; |
4200 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4201 | yyerror(tmpbuf); |
4202 | } | |
4203 | } | |
09bef843 | 4204 | yylval.ival = 1; |
55497cff | 4205 | OPERATOR(MY); |
93a17b20 | 4206 | |
79072805 | 4207 | case KEY_next: |
a0d0e21e | 4208 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4209 | LOOPX(OP_NEXT); |
4210 | ||
4211 | case KEY_ne: | |
4212 | Eop(OP_SNE); | |
4213 | ||
a0d0e21e | 4214 | case KEY_no: |
3280af22 | 4215 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4216 | yyerror("\"no\" not allowed in expression"); |
4217 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
89bfa8cd | 4218 | s = force_version(s); |
a0d0e21e LW |
4219 | yylval.ival = 0; |
4220 | OPERATOR(USE); | |
4221 | ||
4222 | case KEY_not: | |
2d2e263d LW |
4223 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4224 | FUN1(OP_NOT); | |
4225 | else | |
4226 | OPERATOR(NOTOP); | |
a0d0e21e | 4227 | |
79072805 | 4228 | case KEY_open: |
93a17b20 | 4229 | s = skipspace(s); |
834a4ddd | 4230 | if (isIDFIRST_lazy(s)) { |
93a17b20 | 4231 | char *t; |
834a4ddd | 4232 | for (d = s; isALNUM_lazy(d); d++) ; |
93a17b20 | 4233 | t = skipspace(d); |
0453d815 PM |
4234 | if (strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_AMBIGUOUS)) |
4235 | Perl_warner(aTHX_ WARN_AMBIGUOUS, | |
4236 | "Precedence problem: open %.*s should be open(%.*s)", | |
4237 | d-s,s, d-s,s); | |
93a17b20 | 4238 | } |
a0d0e21e | 4239 | LOP(OP_OPEN,XTERM); |
79072805 | 4240 | |
463ee0b2 | 4241 | case KEY_or: |
a0d0e21e | 4242 | yylval.ival = OP_OR; |
463ee0b2 LW |
4243 | OPERATOR(OROP); |
4244 | ||
79072805 LW |
4245 | case KEY_ord: |
4246 | UNI(OP_ORD); | |
4247 | ||
4248 | case KEY_oct: | |
4249 | UNI(OP_OCT); | |
4250 | ||
4251 | case KEY_opendir: | |
a0d0e21e | 4252 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4253 | |
4254 | case KEY_print: | |
3280af22 | 4255 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4256 | LOP(OP_PRINT,XREF); |
79072805 LW |
4257 | |
4258 | case KEY_printf: | |
3280af22 | 4259 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4260 | LOP(OP_PRTF,XREF); |
79072805 | 4261 | |
c07a80fd | 4262 | case KEY_prototype: |
4263 | UNI(OP_PROTOTYPE); | |
4264 | ||
79072805 | 4265 | case KEY_push: |
a0d0e21e | 4266 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4267 | |
4268 | case KEY_pop: | |
4269 | UNI(OP_POP); | |
4270 | ||
a0d0e21e LW |
4271 | case KEY_pos: |
4272 | UNI(OP_POS); | |
4273 | ||
79072805 | 4274 | case KEY_pack: |
a0d0e21e | 4275 | LOP(OP_PACK,XTERM); |
79072805 LW |
4276 | |
4277 | case KEY_package: | |
a0d0e21e | 4278 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4279 | OPERATOR(PACKAGE); |
4280 | ||
4281 | case KEY_pipe: | |
a0d0e21e | 4282 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4283 | |
4284 | case KEY_q: | |
09bef843 | 4285 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4286 | if (!s) |
85e6fe83 | 4287 | missingterm((char*)0); |
79072805 LW |
4288 | yylval.ival = OP_CONST; |
4289 | TERM(sublex_start()); | |
4290 | ||
a0d0e21e LW |
4291 | case KEY_quotemeta: |
4292 | UNI(OP_QUOTEMETA); | |
4293 | ||
8990e307 | 4294 | case KEY_qw: |
09bef843 | 4295 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4296 | if (!s) |
85e6fe83 | 4297 | missingterm((char*)0); |
8127e0e3 GS |
4298 | force_next(')'); |
4299 | if (SvCUR(PL_lex_stuff)) { | |
4300 | OP *words = Nullop; | |
4301 | int warned = 0; | |
3280af22 | 4302 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 GS |
4303 | while (len) { |
4304 | for (; isSPACE(*d) && len; --len, ++d) ; | |
4305 | if (len) { | |
4306 | char *b = d; | |
4307 | if (!warned && ckWARN(WARN_SYNTAX)) { | |
4308 | for (; !isSPACE(*d) && len; --len, ++d) { | |
4309 | if (*d == ',') { | |
cea2e8a9 | 4310 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4311 | "Possible attempt to separate words with commas"); |
4312 | ++warned; | |
4313 | } | |
4314 | else if (*d == '#') { | |
cea2e8a9 | 4315 | Perl_warner(aTHX_ WARN_SYNTAX, |
8127e0e3 GS |
4316 | "Possible attempt to put comments in qw() list"); |
4317 | ++warned; | |
4318 | } | |
4319 | } | |
4320 | } | |
4321 | else { | |
4322 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4323 | } | |
4324 | words = append_elem(OP_LIST, words, | |
4325 | newSVOP(OP_CONST, 0, newSVpvn(b, d-b))); | |
55497cff | 4326 | } |
4327 | } | |
8127e0e3 GS |
4328 | if (words) { |
4329 | PL_nextval[PL_nexttoke].opval = words; | |
4330 | force_next(THING); | |
4331 | } | |
55497cff | 4332 | } |
8127e0e3 GS |
4333 | if (PL_lex_stuff) |
4334 | SvREFCNT_dec(PL_lex_stuff); | |
3280af22 | 4335 | PL_lex_stuff = Nullsv; |
3280af22 | 4336 | PL_expect = XTERM; |
8127e0e3 | 4337 | TOKEN('('); |
8990e307 | 4338 | |
79072805 | 4339 | case KEY_qq: |
09bef843 | 4340 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4341 | if (!s) |
85e6fe83 | 4342 | missingterm((char*)0); |
a0d0e21e | 4343 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4344 | if (SvIVX(PL_lex_stuff) == '\'') |
4345 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4346 | TERM(sublex_start()); |
4347 | ||
8782bef2 GB |
4348 | case KEY_qr: |
4349 | s = scan_pat(s,OP_QR); | |
4350 | TERM(sublex_start()); | |
4351 | ||
79072805 | 4352 | case KEY_qx: |
09bef843 | 4353 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4354 | if (!s) |
85e6fe83 | 4355 | missingterm((char*)0); |
79072805 LW |
4356 | yylval.ival = OP_BACKTICK; |
4357 | set_csh(); | |
4358 | TERM(sublex_start()); | |
4359 | ||
4360 | case KEY_return: | |
4361 | OLDLOP(OP_RETURN); | |
4362 | ||
4363 | case KEY_require: | |
3280af22 | 4364 | *PL_tokenbuf = '\0'; |
a0d0e21e | 4365 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
834a4ddd | 4366 | if (isIDFIRST_lazy(PL_tokenbuf)) |
3280af22 | 4367 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
748a9306 | 4368 | else if (*s == '<') |
a0d0e21e | 4369 | yyerror("<> should be quotes"); |
463ee0b2 | 4370 | UNI(OP_REQUIRE); |
79072805 LW |
4371 | |
4372 | case KEY_reset: | |
4373 | UNI(OP_RESET); | |
4374 | ||
4375 | case KEY_redo: | |
a0d0e21e | 4376 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4377 | LOOPX(OP_REDO); |
4378 | ||
4379 | case KEY_rename: | |
a0d0e21e | 4380 | LOP(OP_RENAME,XTERM); |
79072805 LW |
4381 | |
4382 | case KEY_rand: | |
4383 | UNI(OP_RAND); | |
4384 | ||
4385 | case KEY_rmdir: | |
4386 | UNI(OP_RMDIR); | |
4387 | ||
4388 | case KEY_rindex: | |
a0d0e21e | 4389 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
4390 | |
4391 | case KEY_read: | |
a0d0e21e | 4392 | LOP(OP_READ,XTERM); |
79072805 LW |
4393 | |
4394 | case KEY_readdir: | |
4395 | UNI(OP_READDIR); | |
4396 | ||
93a17b20 LW |
4397 | case KEY_readline: |
4398 | set_csh(); | |
4399 | UNI(OP_READLINE); | |
4400 | ||
4401 | case KEY_readpipe: | |
4402 | set_csh(); | |
4403 | UNI(OP_BACKTICK); | |
4404 | ||
79072805 LW |
4405 | case KEY_rewinddir: |
4406 | UNI(OP_REWINDDIR); | |
4407 | ||
4408 | case KEY_recv: | |
a0d0e21e | 4409 | LOP(OP_RECV,XTERM); |
79072805 LW |
4410 | |
4411 | case KEY_reverse: | |
a0d0e21e | 4412 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
4413 | |
4414 | case KEY_readlink: | |
4415 | UNI(OP_READLINK); | |
4416 | ||
4417 | case KEY_ref: | |
4418 | UNI(OP_REF); | |
4419 | ||
4420 | case KEY_s: | |
4421 | s = scan_subst(s); | |
4422 | if (yylval.opval) | |
4423 | TERM(sublex_start()); | |
4424 | else | |
4425 | TOKEN(1); /* force error */ | |
4426 | ||
a0d0e21e LW |
4427 | case KEY_chomp: |
4428 | UNI(OP_CHOMP); | |
4429 | ||
79072805 LW |
4430 | case KEY_scalar: |
4431 | UNI(OP_SCALAR); | |
4432 | ||
4433 | case KEY_select: | |
a0d0e21e | 4434 | LOP(OP_SELECT,XTERM); |
79072805 LW |
4435 | |
4436 | case KEY_seek: | |
a0d0e21e | 4437 | LOP(OP_SEEK,XTERM); |
79072805 LW |
4438 | |
4439 | case KEY_semctl: | |
a0d0e21e | 4440 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
4441 | |
4442 | case KEY_semget: | |
a0d0e21e | 4443 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
4444 | |
4445 | case KEY_semop: | |
a0d0e21e | 4446 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
4447 | |
4448 | case KEY_send: | |
a0d0e21e | 4449 | LOP(OP_SEND,XTERM); |
79072805 LW |
4450 | |
4451 | case KEY_setpgrp: | |
a0d0e21e | 4452 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
4453 | |
4454 | case KEY_setpriority: | |
a0d0e21e | 4455 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
4456 | |
4457 | case KEY_sethostent: | |
ff68c719 | 4458 | UNI(OP_SHOSTENT); |
79072805 LW |
4459 | |
4460 | case KEY_setnetent: | |
ff68c719 | 4461 | UNI(OP_SNETENT); |
79072805 LW |
4462 | |
4463 | case KEY_setservent: | |
ff68c719 | 4464 | UNI(OP_SSERVENT); |
79072805 LW |
4465 | |
4466 | case KEY_setprotoent: | |
ff68c719 | 4467 | UNI(OP_SPROTOENT); |
79072805 LW |
4468 | |
4469 | case KEY_setpwent: | |
4470 | FUN0(OP_SPWENT); | |
4471 | ||
4472 | case KEY_setgrent: | |
4473 | FUN0(OP_SGRENT); | |
4474 | ||
4475 | case KEY_seekdir: | |
a0d0e21e | 4476 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
4477 | |
4478 | case KEY_setsockopt: | |
a0d0e21e | 4479 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
4480 | |
4481 | case KEY_shift: | |
4482 | UNI(OP_SHIFT); | |
4483 | ||
4484 | case KEY_shmctl: | |
a0d0e21e | 4485 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
4486 | |
4487 | case KEY_shmget: | |
a0d0e21e | 4488 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
4489 | |
4490 | case KEY_shmread: | |
a0d0e21e | 4491 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
4492 | |
4493 | case KEY_shmwrite: | |
a0d0e21e | 4494 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
4495 | |
4496 | case KEY_shutdown: | |
a0d0e21e | 4497 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
4498 | |
4499 | case KEY_sin: | |
4500 | UNI(OP_SIN); | |
4501 | ||
4502 | case KEY_sleep: | |
4503 | UNI(OP_SLEEP); | |
4504 | ||
4505 | case KEY_socket: | |
a0d0e21e | 4506 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
4507 | |
4508 | case KEY_socketpair: | |
a0d0e21e | 4509 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
4510 | |
4511 | case KEY_sort: | |
3280af22 | 4512 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
4513 | s = skipspace(s); |
4514 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 4515 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 4516 | PL_expect = XTERM; |
15f0808c | 4517 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 4518 | LOP(OP_SORT,XREF); |
79072805 LW |
4519 | |
4520 | case KEY_split: | |
a0d0e21e | 4521 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
4522 | |
4523 | case KEY_sprintf: | |
a0d0e21e | 4524 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
4525 | |
4526 | case KEY_splice: | |
a0d0e21e | 4527 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
4528 | |
4529 | case KEY_sqrt: | |
4530 | UNI(OP_SQRT); | |
4531 | ||
4532 | case KEY_srand: | |
4533 | UNI(OP_SRAND); | |
4534 | ||
4535 | case KEY_stat: | |
4536 | UNI(OP_STAT); | |
4537 | ||
4538 | case KEY_study: | |
79072805 LW |
4539 | UNI(OP_STUDY); |
4540 | ||
4541 | case KEY_substr: | |
a0d0e21e | 4542 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
4543 | |
4544 | case KEY_format: | |
4545 | case KEY_sub: | |
93a17b20 | 4546 | really_sub: |
09bef843 | 4547 | { |
3280af22 | 4548 | char tmpbuf[sizeof PL_tokenbuf]; |
b1b65b59 | 4549 | SSize_t tboffset; |
09bef843 SB |
4550 | expectation attrful; |
4551 | bool have_name, have_proto; | |
4552 | int key = tmp; | |
4553 | ||
4554 | s = skipspace(s); | |
4555 | ||
4556 | if (isIDFIRST_lazy(s) || *s == '\'' || | |
4557 | (*s == ':' && s[1] == ':')) | |
4558 | { | |
4559 | PL_expect = XBLOCK; | |
4560 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
4561 | /* remember buffer pos'n for later force_word */ |
4562 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
4563 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
4564 | if (strchr(tmpbuf, ':')) | |
4565 | sv_setpv(PL_subname, tmpbuf); | |
4566 | else { | |
4567 | sv_setsv(PL_subname,PL_curstname); | |
4568 | sv_catpvn(PL_subname,"::",2); | |
4569 | sv_catpvn(PL_subname,tmpbuf,len); | |
4570 | } | |
4571 | s = skipspace(d); | |
4572 | have_name = TRUE; | |
4573 | } | |
463ee0b2 | 4574 | else { |
09bef843 SB |
4575 | if (key == KEY_my) |
4576 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
4577 | PL_expect = XTERMBLOCK; | |
4578 | attrful = XATTRTERM; | |
4579 | sv_setpv(PL_subname,"?"); | |
4580 | have_name = FALSE; | |
463ee0b2 | 4581 | } |
4633a7c4 | 4582 | |
09bef843 SB |
4583 | if (key == KEY_format) { |
4584 | if (*s == '=') | |
4585 | PL_lex_formbrack = PL_lex_brackets + 1; | |
4586 | if (have_name) | |
b1b65b59 JH |
4587 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4588 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4589 | OPERATOR(FORMAT); |
4590 | } | |
79072805 | 4591 | |
09bef843 SB |
4592 | /* Look for a prototype */ |
4593 | if (*s == '(') { | |
4594 | char *p; | |
4595 | ||
4596 | s = scan_str(s,FALSE,FALSE); | |
4597 | if (!s) { | |
4598 | if (PL_lex_stuff) | |
4599 | SvREFCNT_dec(PL_lex_stuff); | |
4600 | PL_lex_stuff = Nullsv; | |
4601 | Perl_croak(aTHX_ "Prototype not terminated"); | |
4602 | } | |
4603 | /* strip spaces */ | |
4604 | d = SvPVX(PL_lex_stuff); | |
4605 | tmp = 0; | |
4606 | for (p = d; *p; ++p) { | |
4607 | if (!isSPACE(*p)) | |
4608 | d[tmp++] = *p; | |
4609 | } | |
4610 | d[tmp] = '\0'; | |
4611 | SvCUR(PL_lex_stuff) = tmp; | |
4612 | have_proto = TRUE; | |
68dc0745 | 4613 | |
09bef843 | 4614 | s = skipspace(s); |
4633a7c4 | 4615 | } |
09bef843 SB |
4616 | else |
4617 | have_proto = FALSE; | |
4618 | ||
4619 | if (*s == ':' && s[1] != ':') | |
4620 | PL_expect = attrful; | |
4621 | ||
4622 | if (have_proto) { | |
b1b65b59 JH |
4623 | PL_nextval[PL_nexttoke].opval = |
4624 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
4625 | PL_lex_stuff = Nullsv; |
4626 | force_next(THING); | |
68dc0745 | 4627 | } |
09bef843 SB |
4628 | if (!have_name) { |
4629 | sv_setpv(PL_subname,"__ANON__"); | |
4630 | TOKEN(ANONSUB); | |
4633a7c4 | 4631 | } |
b1b65b59 JH |
4632 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
4633 | FALSE, TRUE, TRUE); | |
09bef843 SB |
4634 | if (key == KEY_my) |
4635 | TOKEN(MYSUB); | |
4636 | TOKEN(SUB); | |
4633a7c4 | 4637 | } |
79072805 LW |
4638 | |
4639 | case KEY_system: | |
4640 | set_csh(); | |
a0d0e21e | 4641 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
4642 | |
4643 | case KEY_symlink: | |
a0d0e21e | 4644 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
4645 | |
4646 | case KEY_syscall: | |
a0d0e21e | 4647 | LOP(OP_SYSCALL,XTERM); |
79072805 | 4648 | |
c07a80fd | 4649 | case KEY_sysopen: |
4650 | LOP(OP_SYSOPEN,XTERM); | |
4651 | ||
137443ea | 4652 | case KEY_sysseek: |
4653 | LOP(OP_SYSSEEK,XTERM); | |
4654 | ||
79072805 | 4655 | case KEY_sysread: |
a0d0e21e | 4656 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
4657 | |
4658 | case KEY_syswrite: | |
a0d0e21e | 4659 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
4660 | |
4661 | case KEY_tr: | |
4662 | s = scan_trans(s); | |
4663 | TERM(sublex_start()); | |
4664 | ||
4665 | case KEY_tell: | |
4666 | UNI(OP_TELL); | |
4667 | ||
4668 | case KEY_telldir: | |
4669 | UNI(OP_TELLDIR); | |
4670 | ||
463ee0b2 | 4671 | case KEY_tie: |
a0d0e21e | 4672 | LOP(OP_TIE,XTERM); |
463ee0b2 | 4673 | |
c07a80fd | 4674 | case KEY_tied: |
4675 | UNI(OP_TIED); | |
4676 | ||
79072805 LW |
4677 | case KEY_time: |
4678 | FUN0(OP_TIME); | |
4679 | ||
4680 | case KEY_times: | |
4681 | FUN0(OP_TMS); | |
4682 | ||
4683 | case KEY_truncate: | |
a0d0e21e | 4684 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
4685 | |
4686 | case KEY_uc: | |
4687 | UNI(OP_UC); | |
4688 | ||
4689 | case KEY_ucfirst: | |
4690 | UNI(OP_UCFIRST); | |
4691 | ||
463ee0b2 LW |
4692 | case KEY_untie: |
4693 | UNI(OP_UNTIE); | |
4694 | ||
79072805 | 4695 | case KEY_until: |
57843af0 | 4696 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4697 | OPERATOR(UNTIL); |
4698 | ||
4699 | case KEY_unless: | |
57843af0 | 4700 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4701 | OPERATOR(UNLESS); |
4702 | ||
4703 | case KEY_unlink: | |
a0d0e21e | 4704 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
4705 | |
4706 | case KEY_undef: | |
4707 | UNI(OP_UNDEF); | |
4708 | ||
4709 | case KEY_unpack: | |
a0d0e21e | 4710 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
4711 | |
4712 | case KEY_utime: | |
a0d0e21e | 4713 | LOP(OP_UTIME,XTERM); |
79072805 LW |
4714 | |
4715 | case KEY_umask: | |
599cee73 | 4716 | if (ckWARN(WARN_OCTAL)) { |
3280af22 | 4717 | for (d = s; d < PL_bufend && (isSPACE(*d) || *d == '('); d++) ; |
4438c4b7 JH |
4718 | if (*d != '0' && isDIGIT(*d)) |
4719 | Perl_warner(aTHX_ WARN_OCTAL, | |
4720 | "umask: argument is missing initial 0"); | |
748a9306 | 4721 | } |
79072805 LW |
4722 | UNI(OP_UMASK); |
4723 | ||
4724 | case KEY_unshift: | |
a0d0e21e LW |
4725 | LOP(OP_UNSHIFT,XTERM); |
4726 | ||
4727 | case KEY_use: | |
3280af22 | 4728 | if (PL_expect != XSTATE) |
a0d0e21e | 4729 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 4730 | s = skipspace(s); |
4731 | if(isDIGIT(*s)) { | |
4732 | s = force_version(s); | |
4733 | if(*s == ';' || (s = skipspace(s), *s == ';')) { | |
3280af22 | 4734 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 4735 | force_next(WORD); |
4736 | } | |
4737 | } | |
4738 | else { | |
4739 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4740 | s = force_version(s); | |
4741 | } | |
a0d0e21e LW |
4742 | yylval.ival = 1; |
4743 | OPERATOR(USE); | |
79072805 LW |
4744 | |
4745 | case KEY_values: | |
4746 | UNI(OP_VALUES); | |
4747 | ||
4748 | case KEY_vec: | |
a0d0e21e | 4749 | LOP(OP_VEC,XTERM); |
79072805 LW |
4750 | |
4751 | case KEY_while: | |
57843af0 | 4752 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4753 | OPERATOR(WHILE); |
4754 | ||
4755 | case KEY_warn: | |
3280af22 | 4756 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4757 | LOP(OP_WARN,XTERM); |
79072805 LW |
4758 | |
4759 | case KEY_wait: | |
4760 | FUN0(OP_WAIT); | |
4761 | ||
4762 | case KEY_waitpid: | |
a0d0e21e | 4763 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
4764 | |
4765 | case KEY_wantarray: | |
4766 | FUN0(OP_WANTARRAY); | |
4767 | ||
4768 | case KEY_write: | |
9d116dd7 JH |
4769 | #ifdef EBCDIC |
4770 | { | |
4771 | static char ctl_l[2]; | |
4772 | ||
4773 | if (ctl_l[0] == '\0') | |
4774 | ctl_l[0] = toCTRL('L'); | |
4775 | gv_fetchpv(ctl_l,TRUE, SVt_PV); | |
4776 | } | |
4777 | #else | |
4778 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
4779 | #endif | |
79072805 LW |
4780 | UNI(OP_ENTERWRITE); |
4781 | ||
4782 | case KEY_x: | |
3280af22 | 4783 | if (PL_expect == XOPERATOR) |
79072805 LW |
4784 | Mop(OP_REPEAT); |
4785 | check_uni(); | |
4786 | goto just_a_word; | |
4787 | ||
a0d0e21e LW |
4788 | case KEY_xor: |
4789 | yylval.ival = OP_XOR; | |
4790 | OPERATOR(OROP); | |
4791 | ||
79072805 LW |
4792 | case KEY_y: |
4793 | s = scan_trans(s); | |
4794 | TERM(sublex_start()); | |
4795 | } | |
49dc05e3 | 4796 | }} |
79072805 LW |
4797 | } |
4798 | ||
4799 | I32 | |
864dbfa3 | 4800 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
4801 | { |
4802 | switch (*d) { | |
4803 | case '_': | |
4804 | if (d[1] == '_') { | |
a0d0e21e | 4805 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 4806 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
4807 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 4808 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
4809 | if (strEQ(d,"__END__")) return KEY___END__; |
4810 | } | |
4811 | break; | |
8990e307 LW |
4812 | case 'A': |
4813 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
4814 | break; | |
79072805 | 4815 | case 'a': |
463ee0b2 LW |
4816 | switch (len) { |
4817 | case 3: | |
a0d0e21e LW |
4818 | if (strEQ(d,"and")) return -KEY_and; |
4819 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 4820 | break; |
463ee0b2 | 4821 | case 5: |
a0d0e21e LW |
4822 | if (strEQ(d,"alarm")) return -KEY_alarm; |
4823 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
4824 | break; |
4825 | case 6: | |
a0d0e21e | 4826 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
4827 | break; |
4828 | } | |
79072805 LW |
4829 | break; |
4830 | case 'B': | |
4831 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 4832 | break; |
79072805 | 4833 | case 'b': |
a0d0e21e LW |
4834 | if (strEQ(d,"bless")) return -KEY_bless; |
4835 | if (strEQ(d,"bind")) return -KEY_bind; | |
4836 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
4837 | break; | |
4838 | case 'C': | |
4839 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
79072805 LW |
4840 | break; |
4841 | case 'c': | |
4842 | switch (len) { | |
4843 | case 3: | |
a0d0e21e LW |
4844 | if (strEQ(d,"cmp")) return -KEY_cmp; |
4845 | if (strEQ(d,"chr")) return -KEY_chr; | |
4846 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
4847 | break; |
4848 | case 4: | |
4849 | if (strEQ(d,"chop")) return KEY_chop; | |
4850 | break; | |
4851 | case 5: | |
a0d0e21e LW |
4852 | if (strEQ(d,"close")) return -KEY_close; |
4853 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
4854 | if (strEQ(d,"chomp")) return KEY_chomp; | |
4855 | if (strEQ(d,"chmod")) return -KEY_chmod; | |
4856 | if (strEQ(d,"chown")) return -KEY_chown; | |
4857 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
4858 | break; |
4859 | case 6: | |
a0d0e21e LW |
4860 | if (strEQ(d,"chroot")) return -KEY_chroot; |
4861 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
4862 | break; |
4863 | case 7: | |
a0d0e21e | 4864 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
4865 | break; |
4866 | case 8: | |
a0d0e21e LW |
4867 | if (strEQ(d,"closedir")) return -KEY_closedir; |
4868 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
4869 | break; |
4870 | } | |
4871 | break; | |
ed6116ce LW |
4872 | case 'D': |
4873 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
4874 | break; | |
79072805 LW |
4875 | case 'd': |
4876 | switch (len) { | |
4877 | case 2: | |
4878 | if (strEQ(d,"do")) return KEY_do; | |
4879 | break; | |
4880 | case 3: | |
a0d0e21e | 4881 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
4882 | break; |
4883 | case 4: | |
a0d0e21e | 4884 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
4885 | break; |
4886 | case 6: | |
4887 | if (strEQ(d,"delete")) return KEY_delete; | |
4888 | break; | |
4889 | case 7: | |
4890 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 4891 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
4892 | break; |
4893 | case 8: | |
a0d0e21e | 4894 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
4895 | break; |
4896 | } | |
4897 | break; | |
4898 | case 'E': | |
a0d0e21e | 4899 | if (strEQ(d,"EQ")) { deprecate(d); return -KEY_eq;} |
79072805 LW |
4900 | if (strEQ(d,"END")) return KEY_END; |
4901 | break; | |
4902 | case 'e': | |
4903 | switch (len) { | |
4904 | case 2: | |
a0d0e21e | 4905 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
4906 | break; |
4907 | case 3: | |
a0d0e21e LW |
4908 | if (strEQ(d,"eof")) return -KEY_eof; |
4909 | if (strEQ(d,"exp")) return -KEY_exp; | |
79072805 LW |
4910 | break; |
4911 | case 4: | |
4912 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 4913 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 4914 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 4915 | if (strEQ(d,"exec")) return -KEY_exec; |
79072805 LW |
4916 | if (strEQ(d,"each")) return KEY_each; |
4917 | break; | |
4918 | case 5: | |
4919 | if (strEQ(d,"elsif")) return KEY_elsif; | |
4920 | break; | |
a0d0e21e LW |
4921 | case 6: |
4922 | if (strEQ(d,"exists")) return KEY_exists; | |
cea2e8a9 | 4923 | if (strEQ(d,"elseif")) Perl_warn(aTHX_ "elseif should be elsif"); |
a0d0e21e | 4924 | break; |
79072805 | 4925 | case 8: |
a0d0e21e LW |
4926 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
4927 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
4928 | break; |
4929 | case 9: | |
a0d0e21e | 4930 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
4931 | break; |
4932 | case 10: | |
a0d0e21e LW |
4933 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
4934 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
4935 | break; |
4936 | case 11: | |
a0d0e21e | 4937 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 4938 | break; |
a687059c | 4939 | } |
a687059c | 4940 | break; |
79072805 LW |
4941 | case 'f': |
4942 | switch (len) { | |
4943 | case 3: | |
4944 | if (strEQ(d,"for")) return KEY_for; | |
4945 | break; | |
4946 | case 4: | |
a0d0e21e | 4947 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
4948 | break; |
4949 | case 5: | |
a0d0e21e LW |
4950 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
4951 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
4952 | break; |
4953 | case 6: | |
4954 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 4955 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
4956 | break; |
4957 | case 7: | |
4958 | if (strEQ(d,"foreach")) return KEY_foreach; | |
4959 | break; | |
4960 | case 8: | |
a0d0e21e | 4961 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 4962 | break; |
378cc40b | 4963 | } |
a687059c | 4964 | break; |
79072805 LW |
4965 | case 'G': |
4966 | if (len == 2) { | |
a0d0e21e LW |
4967 | if (strEQ(d,"GT")) { deprecate(d); return -KEY_gt;} |
4968 | if (strEQ(d,"GE")) { deprecate(d); return -KEY_ge;} | |
9f68db38 | 4969 | } |
a687059c | 4970 | break; |
79072805 | 4971 | case 'g': |
a687059c LW |
4972 | if (strnEQ(d,"get",3)) { |
4973 | d += 3; | |
4974 | if (*d == 'p') { | |
79072805 LW |
4975 | switch (len) { |
4976 | case 7: | |
a0d0e21e LW |
4977 | if (strEQ(d,"ppid")) return -KEY_getppid; |
4978 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
4979 | break; |
4980 | case 8: | |
a0d0e21e LW |
4981 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
4982 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
4983 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
4984 | break; |
4985 | case 11: | |
a0d0e21e LW |
4986 | if (strEQ(d,"peername")) return -KEY_getpeername; |
4987 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
4988 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
4989 | break; |
4990 | case 14: | |
a0d0e21e | 4991 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
4992 | break; |
4993 | case 16: | |
a0d0e21e | 4994 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
4995 | break; |
4996 | } | |
a687059c LW |
4997 | } |
4998 | else if (*d == 'h') { | |
a0d0e21e LW |
4999 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5000 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5001 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5002 | } |
5003 | else if (*d == 'n') { | |
a0d0e21e LW |
5004 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5005 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5006 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5007 | } |
5008 | else if (*d == 's') { | |
a0d0e21e LW |
5009 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5010 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5011 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5012 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5013 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5014 | } |
5015 | else if (*d == 'g') { | |
a0d0e21e LW |
5016 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5017 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5018 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5019 | } |
5020 | else if (*d == 'l') { | |
a0d0e21e | 5021 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5022 | } |
a0d0e21e | 5023 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5024 | break; |
a687059c | 5025 | } |
79072805 LW |
5026 | switch (len) { |
5027 | case 2: | |
a0d0e21e LW |
5028 | if (strEQ(d,"gt")) return -KEY_gt; |
5029 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5030 | break; |
5031 | case 4: | |
5032 | if (strEQ(d,"grep")) return KEY_grep; | |
5033 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5034 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5035 | break; |
5036 | case 6: | |
a0d0e21e | 5037 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5038 | break; |
378cc40b | 5039 | } |
a687059c | 5040 | break; |
79072805 | 5041 | case 'h': |
a0d0e21e | 5042 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5043 | break; |
7d07dbc2 MB |
5044 | case 'I': |
5045 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5046 | break; | |
79072805 LW |
5047 | case 'i': |
5048 | switch (len) { | |
5049 | case 2: | |
5050 | if (strEQ(d,"if")) return KEY_if; | |
5051 | break; | |
5052 | case 3: | |
a0d0e21e | 5053 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5054 | break; |
5055 | case 5: | |
a0d0e21e LW |
5056 | if (strEQ(d,"index")) return -KEY_index; |
5057 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5058 | break; |
5059 | } | |
a687059c | 5060 | break; |
79072805 | 5061 | case 'j': |
a0d0e21e | 5062 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5063 | break; |
79072805 LW |
5064 | case 'k': |
5065 | if (len == 4) { | |
5066 | if (strEQ(d,"keys")) return KEY_keys; | |
a0d0e21e | 5067 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5068 | } |
79072805 LW |
5069 | break; |
5070 | case 'L': | |
5071 | if (len == 2) { | |
a0d0e21e LW |
5072 | if (strEQ(d,"LT")) { deprecate(d); return -KEY_lt;} |
5073 | if (strEQ(d,"LE")) { deprecate(d); return -KEY_le;} | |
378cc40b | 5074 | } |
79072805 LW |
5075 | break; |
5076 | case 'l': | |
5077 | switch (len) { | |
5078 | case 2: | |
a0d0e21e LW |
5079 | if (strEQ(d,"lt")) return -KEY_lt; |
5080 | if (strEQ(d,"le")) return -KEY_le; | |
5081 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5082 | break; |
5083 | case 3: | |
a0d0e21e | 5084 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5085 | break; |
5086 | case 4: | |
5087 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5088 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5089 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5090 | break; |
79072805 LW |
5091 | case 5: |
5092 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5093 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5094 | break; |
5095 | case 6: | |
a0d0e21e LW |
5096 | if (strEQ(d,"length")) return -KEY_length; |
5097 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5098 | break; |
5099 | case 7: | |
a0d0e21e | 5100 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5101 | break; |
5102 | case 9: | |
a0d0e21e | 5103 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5104 | break; |
5105 | } | |
a687059c | 5106 | break; |
79072805 LW |
5107 | case 'm': |
5108 | switch (len) { | |
5109 | case 1: return KEY_m; | |
93a17b20 LW |
5110 | case 2: |
5111 | if (strEQ(d,"my")) return KEY_my; | |
5112 | break; | |
a0d0e21e LW |
5113 | case 3: |
5114 | if (strEQ(d,"map")) return KEY_map; | |
5115 | break; | |
79072805 | 5116 | case 5: |
a0d0e21e | 5117 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5118 | break; |
5119 | case 6: | |
a0d0e21e LW |
5120 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5121 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5122 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5123 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5124 | break; |
5125 | } | |
a687059c | 5126 | break; |
79072805 | 5127 | case 'N': |
a0d0e21e | 5128 | if (strEQ(d,"NE")) { deprecate(d); return -KEY_ne;} |
a687059c | 5129 | break; |
79072805 LW |
5130 | case 'n': |
5131 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5132 | if (strEQ(d,"ne")) return -KEY_ne; |
5133 | if (strEQ(d,"not")) return -KEY_not; | |
5134 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5135 | break; |
79072805 LW |
5136 | case 'o': |
5137 | switch (len) { | |
463ee0b2 | 5138 | case 2: |
a0d0e21e | 5139 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5140 | break; |
79072805 | 5141 | case 3: |
a0d0e21e LW |
5142 | if (strEQ(d,"ord")) return -KEY_ord; |
5143 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5144 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5145 | break; |
5146 | case 4: | |
a0d0e21e | 5147 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5148 | break; |
5149 | case 7: | |
a0d0e21e | 5150 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5151 | break; |
fe14fcc3 | 5152 | } |
a687059c | 5153 | break; |
79072805 LW |
5154 | case 'p': |
5155 | switch (len) { | |
5156 | case 3: | |
5157 | if (strEQ(d,"pop")) return KEY_pop; | |
a0d0e21e | 5158 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5159 | break; |
5160 | case 4: | |
5161 | if (strEQ(d,"push")) return KEY_push; | |
a0d0e21e LW |
5162 | if (strEQ(d,"pack")) return -KEY_pack; |
5163 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5164 | break; |
5165 | case 5: | |
5166 | if (strEQ(d,"print")) return KEY_print; | |
5167 | break; | |
5168 | case 6: | |
5169 | if (strEQ(d,"printf")) return KEY_printf; | |
5170 | break; | |
5171 | case 7: | |
5172 | if (strEQ(d,"package")) return KEY_package; | |
5173 | break; | |
c07a80fd | 5174 | case 9: |
5175 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5176 | } |
79072805 LW |
5177 | break; |
5178 | case 'q': | |
5179 | if (len <= 2) { | |
5180 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5181 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5182 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5183 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5184 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5185 | } |
a0d0e21e | 5186 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5187 | break; |
5188 | case 'r': | |
5189 | switch (len) { | |
5190 | case 3: | |
a0d0e21e | 5191 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5192 | break; |
5193 | case 4: | |
a0d0e21e LW |
5194 | if (strEQ(d,"read")) return -KEY_read; |
5195 | if (strEQ(d,"rand")) return -KEY_rand; | |
5196 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5197 | if (strEQ(d,"redo")) return KEY_redo; |
5198 | break; | |
5199 | case 5: | |
a0d0e21e LW |
5200 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5201 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5202 | break; |
5203 | case 6: | |
5204 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5205 | if (strEQ(d,"rename")) return -KEY_rename; |
5206 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5207 | break; |
5208 | case 7: | |
a0d0e21e LW |
5209 | if (strEQ(d,"require")) return -KEY_require; |
5210 | if (strEQ(d,"reverse")) return -KEY_reverse; | |
5211 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5212 | break; |
5213 | case 8: | |
a0d0e21e LW |
5214 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5215 | if (strEQ(d,"readline")) return -KEY_readline; | |
5216 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5217 | break; |
5218 | case 9: | |
a0d0e21e | 5219 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5220 | break; |
a687059c | 5221 | } |
79072805 | 5222 | break; |
4f25aa18 GS |
5223 | case 'S': |
5224 | if (strEQ(d,"STOP")) return KEY_STOP; | |
5225 | break; | |
79072805 | 5226 | case 's': |
a687059c | 5227 | switch (d[1]) { |
79072805 | 5228 | case 0: return KEY_s; |
a687059c | 5229 | case 'c': |
79072805 | 5230 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5231 | break; |
5232 | case 'e': | |
79072805 LW |
5233 | switch (len) { |
5234 | case 4: | |
a0d0e21e LW |
5235 | if (strEQ(d,"seek")) return -KEY_seek; |
5236 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5237 | break; |
5238 | case 5: | |
a0d0e21e | 5239 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5240 | break; |
5241 | case 6: | |
a0d0e21e LW |
5242 | if (strEQ(d,"select")) return -KEY_select; |
5243 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5244 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5245 | break; |
5246 | case 7: | |
a0d0e21e LW |
5247 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5248 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5249 | break; |
5250 | case 8: | |
a0d0e21e LW |
5251 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
5252 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
5253 | break; |
5254 | case 9: | |
a0d0e21e | 5255 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
5256 | break; |
5257 | case 10: | |
a0d0e21e LW |
5258 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
5259 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
5260 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
5261 | break; |
5262 | case 11: | |
a0d0e21e LW |
5263 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
5264 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
5265 | break; |
5266 | } | |
a687059c LW |
5267 | break; |
5268 | case 'h': | |
79072805 LW |
5269 | switch (len) { |
5270 | case 5: | |
5271 | if (strEQ(d,"shift")) return KEY_shift; | |
5272 | break; | |
5273 | case 6: | |
a0d0e21e LW |
5274 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
5275 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
5276 | break; |
5277 | case 7: | |
a0d0e21e | 5278 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
5279 | break; |
5280 | case 8: | |
a0d0e21e LW |
5281 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
5282 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
5283 | break; |
5284 | } | |
a687059c LW |
5285 | break; |
5286 | case 'i': | |
a0d0e21e | 5287 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
5288 | break; |
5289 | case 'l': | |
a0d0e21e | 5290 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
5291 | break; |
5292 | case 'o': | |
79072805 | 5293 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
5294 | if (strEQ(d,"socket")) return -KEY_socket; |
5295 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
5296 | break; |
5297 | case 'p': | |
79072805 | 5298 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 5299 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
79072805 | 5300 | if (strEQ(d,"splice")) return KEY_splice; |
a687059c LW |
5301 | break; |
5302 | case 'q': | |
a0d0e21e | 5303 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
5304 | break; |
5305 | case 'r': | |
a0d0e21e | 5306 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
5307 | break; |
5308 | case 't': | |
a0d0e21e | 5309 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 5310 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
5311 | break; |
5312 | case 'u': | |
a0d0e21e | 5313 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 5314 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
5315 | break; |
5316 | case 'y': | |
79072805 LW |
5317 | switch (len) { |
5318 | case 6: | |
a0d0e21e | 5319 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
5320 | break; |
5321 | case 7: | |
a0d0e21e LW |
5322 | if (strEQ(d,"symlink")) return -KEY_symlink; |
5323 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 5324 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
5325 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
5326 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
5327 | break; |
5328 | case 8: | |
a0d0e21e | 5329 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 5330 | break; |
a687059c | 5331 | } |
a687059c LW |
5332 | break; |
5333 | } | |
5334 | break; | |
79072805 LW |
5335 | case 't': |
5336 | switch (len) { | |
5337 | case 2: | |
5338 | if (strEQ(d,"tr")) return KEY_tr; | |
5339 | break; | |
463ee0b2 LW |
5340 | case 3: |
5341 | if (strEQ(d,"tie")) return KEY_tie; | |
5342 | break; | |
79072805 | 5343 | case 4: |
a0d0e21e | 5344 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 5345 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 5346 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
5347 | break; |
5348 | case 5: | |
a0d0e21e | 5349 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
5350 | break; |
5351 | case 7: | |
a0d0e21e | 5352 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
5353 | break; |
5354 | case 8: | |
a0d0e21e | 5355 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 5356 | break; |
378cc40b | 5357 | } |
a687059c | 5358 | break; |
79072805 LW |
5359 | case 'u': |
5360 | switch (len) { | |
5361 | case 2: | |
a0d0e21e LW |
5362 | if (strEQ(d,"uc")) return -KEY_uc; |
5363 | break; | |
5364 | case 3: | |
5365 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
5366 | break; |
5367 | case 5: | |
5368 | if (strEQ(d,"undef")) return KEY_undef; | |
5369 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 5370 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
5371 | if (strEQ(d,"utime")) return -KEY_utime; |
5372 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
5373 | break; |
5374 | case 6: | |
5375 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
5376 | if (strEQ(d,"unpack")) return -KEY_unpack; |
5377 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
5378 | break; |
5379 | case 7: | |
5380 | if (strEQ(d,"unshift")) return KEY_unshift; | |
a0d0e21e | 5381 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 5382 | break; |
a687059c LW |
5383 | } |
5384 | break; | |
79072805 | 5385 | case 'v': |
a0d0e21e LW |
5386 | if (strEQ(d,"values")) return -KEY_values; |
5387 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 5388 | break; |
79072805 LW |
5389 | case 'w': |
5390 | switch (len) { | |
5391 | case 4: | |
a0d0e21e LW |
5392 | if (strEQ(d,"warn")) return -KEY_warn; |
5393 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
5394 | break; |
5395 | case 5: | |
5396 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 5397 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
5398 | break; |
5399 | case 7: | |
a0d0e21e | 5400 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
5401 | break; |
5402 | case 9: | |
a0d0e21e | 5403 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 5404 | break; |
2f3197b3 | 5405 | } |
a687059c | 5406 | break; |
79072805 | 5407 | case 'x': |
a0d0e21e LW |
5408 | if (len == 1) return -KEY_x; |
5409 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 5410 | break; |
79072805 LW |
5411 | case 'y': |
5412 | if (len == 1) return KEY_y; | |
5413 | break; | |
5414 | case 'z': | |
a687059c LW |
5415 | break; |
5416 | } | |
79072805 | 5417 | return 0; |
a687059c LW |
5418 | } |
5419 | ||
76e3520e | 5420 | STATIC void |
cea2e8a9 | 5421 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 5422 | { |
2f3197b3 LW |
5423 | char *w; |
5424 | ||
d008e5eb GS |
5425 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
5426 | dTHR; /* only for ckWARN */ | |
5427 | if (ckWARN(WARN_SYNTAX)) { | |
5428 | int level = 1; | |
5429 | for (w = s+2; *w && level; w++) { | |
5430 | if (*w == '(') | |
5431 | ++level; | |
5432 | else if (*w == ')') | |
5433 | --level; | |
5434 | } | |
5435 | if (*w) | |
5436 | for (; *w && isSPACE(*w); w++) ; | |
5437 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
65cec589 GS |
5438 | Perl_warner(aTHX_ WARN_SYNTAX, |
5439 | "%s (...) interpreted as function",name); | |
d008e5eb | 5440 | } |
2f3197b3 | 5441 | } |
3280af22 | 5442 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 5443 | s++; |
a687059c LW |
5444 | if (*s == '(') |
5445 | s++; | |
3280af22 | 5446 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5447 | s++; |
834a4ddd | 5448 | if (isIDFIRST_lazy(s)) { |
2f3197b3 | 5449 | w = s++; |
834a4ddd | 5450 | while (isALNUM_lazy(s)) |
a687059c | 5451 | s++; |
3280af22 | 5452 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 5453 | s++; |
e929a76b | 5454 | if (*s == ',') { |
463ee0b2 | 5455 | int kw; |
e929a76b | 5456 | *s = '\0'; |
864dbfa3 | 5457 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 5458 | *s = ','; |
463ee0b2 | 5459 | if (kw) |
e929a76b | 5460 | return; |
cea2e8a9 | 5461 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
5462 | } |
5463 | } | |
5464 | } | |
5465 | ||
423cee85 JH |
5466 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
5467 | Best used as sv=new_constant(..., sv, ...). | |
5468 | If s, pv are NULL, calls subroutine with one argument, | |
5469 | and type is used with error messages only. */ | |
5470 | ||
b3ac6de7 | 5471 | STATIC SV * |
dff6d3cd GS |
5472 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
5473 | const char *type) | |
b3ac6de7 | 5474 | { |
b3ac6de7 | 5475 | dSP; |
3280af22 | 5476 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 5477 | SV *res; |
b3ac6de7 IZ |
5478 | SV **cvp; |
5479 | SV *cv, *typesv; | |
dff6d3cd | 5480 | const char *why, *why1, *why2; |
423cee85 JH |
5481 | |
5482 | if (!(PL_hints & HINT_LOCALIZE_HH)) { | |
5483 | SV *msg; | |
5484 | ||
5485 | why = "%^H is not localized"; | |
5486 | report_short: | |
5487 | why1 = why2 = ""; | |
5488 | report: | |
5489 | msg = Perl_newSVpvf(aTHX_ "constant(%s): %s%s%s", | |
5490 | (type ? type: "undef"), why1, why2, why); | |
5491 | yyerror(SvPVX(msg)); | |
5492 | SvREFCNT_dec(msg); | |
5493 | return sv; | |
5494 | } | |
b3ac6de7 | 5495 | if (!table) { |
423cee85 JH |
5496 | why = "%^H is not defined"; |
5497 | goto report_short; | |
b3ac6de7 IZ |
5498 | } |
5499 | cvp = hv_fetch(table, key, strlen(key), FALSE); | |
5500 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
5501 | why = "} is not defined"; |
5502 | why1 = "$^H{"; | |
5503 | why2 = key; | |
5504 | goto report; | |
b3ac6de7 IZ |
5505 | } |
5506 | sv_2mortal(sv); /* Parent created it permanently */ | |
5507 | cv = *cvp; | |
423cee85 JH |
5508 | if (!pv && s) |
5509 | pv = sv_2mortal(newSVpvn(s, len)); | |
5510 | if (type && pv) | |
5511 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 5512 | else |
423cee85 JH |
5513 | typesv = &PL_sv_undef; |
5514 | ||
e788e7d3 | 5515 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
5516 | ENTER ; |
5517 | SAVETMPS; | |
5518 | ||
5519 | PUSHMARK(SP) ; | |
25eaa213 | 5520 | EXTEND(sp, 4); |
423cee85 JH |
5521 | if (pv) |
5522 | PUSHs(pv); | |
b3ac6de7 | 5523 | PUSHs(sv); |
423cee85 JH |
5524 | if (pv) |
5525 | PUSHs(typesv); | |
b3ac6de7 IZ |
5526 | PUSHs(cv); |
5527 | PUTBACK; | |
423cee85 JH |
5528 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
5529 | ||
5530 | SPAGAIN ; | |
5531 | ||
5532 | /* Check the eval first */ | |
5533 | if (!PL_in_eval && SvTRUE(ERRSV)) | |
5534 | { | |
5535 | STRLEN n_a; | |
5536 | sv_catpv(ERRSV, "Propagated"); | |
5537 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 5538 | (void)POPs; |
423cee85 JH |
5539 | res = SvREFCNT_inc(sv); |
5540 | } | |
5541 | else { | |
5542 | res = POPs; | |
e1f15930 | 5543 | (void)SvREFCNT_inc(res); |
423cee85 JH |
5544 | } |
5545 | ||
5546 | PUTBACK ; | |
5547 | FREETMPS ; | |
5548 | LEAVE ; | |
b3ac6de7 | 5549 | POPSTACK; |
423cee85 | 5550 | |
b3ac6de7 | 5551 | if (!SvOK(res)) { |
423cee85 JH |
5552 | why = "}} did not return a defined value"; |
5553 | why1 = "Call to &{$^H{"; | |
5554 | why2 = key; | |
5555 | sv = res; | |
5556 | goto report; | |
5557 | } | |
5558 | ||
5559 | return res; | |
b3ac6de7 | 5560 | } |
423cee85 | 5561 | |
76e3520e | 5562 | STATIC char * |
cea2e8a9 | 5563 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
5564 | { |
5565 | register char *d = dest; | |
8903cb82 | 5566 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 5567 | for (;;) { |
8903cb82 | 5568 | if (d >= e) |
cea2e8a9 | 5569 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5570 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5571 | *d++ = *s++; |
834a4ddd | 5572 | else if (*s == '\'' && allow_package && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5573 | *d++ = ':'; |
5574 | *d++ = ':'; | |
5575 | s++; | |
5576 | } | |
c3e0f903 | 5577 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
5578 | *d++ = *s++; |
5579 | *d++ = *s++; | |
5580 | } | |
834a4ddd | 5581 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5582 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5583 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5584 | t += UTF8SKIP(t); |
5585 | if (d + (t - s) > e) | |
cea2e8a9 | 5586 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5587 | Copy(s, d, t - s, char); |
5588 | d += t - s; | |
5589 | s = t; | |
5590 | } | |
463ee0b2 LW |
5591 | else { |
5592 | *d = '\0'; | |
5593 | *slp = d - dest; | |
5594 | return s; | |
e929a76b | 5595 | } |
378cc40b LW |
5596 | } |
5597 | } | |
5598 | ||
76e3520e | 5599 | STATIC char * |
cea2e8a9 | 5600 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
5601 | { |
5602 | register char *d; | |
8903cb82 | 5603 | register char *e; |
79072805 | 5604 | char *bracket = 0; |
748a9306 | 5605 | char funny = *s++; |
378cc40b | 5606 | |
3280af22 NIS |
5607 | if (PL_lex_brackets == 0) |
5608 | PL_lex_fakebrack = 0; | |
a0d0e21e LW |
5609 | if (isSPACE(*s)) |
5610 | s = skipspace(s); | |
378cc40b | 5611 | d = dest; |
8903cb82 | 5612 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 5613 | if (isDIGIT(*s)) { |
8903cb82 | 5614 | while (isDIGIT(*s)) { |
5615 | if (d >= e) | |
cea2e8a9 | 5616 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 5617 | *d++ = *s++; |
8903cb82 | 5618 | } |
378cc40b LW |
5619 | } |
5620 | else { | |
463ee0b2 | 5621 | for (;;) { |
8903cb82 | 5622 | if (d >= e) |
cea2e8a9 | 5623 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 5624 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 5625 | *d++ = *s++; |
834a4ddd | 5626 | else if (*s == '\'' && isIDFIRST_lazy(s+1)) { |
463ee0b2 LW |
5627 | *d++ = ':'; |
5628 | *d++ = ':'; | |
5629 | s++; | |
5630 | } | |
a0d0e21e | 5631 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
5632 | *d++ = *s++; |
5633 | *d++ = *s++; | |
5634 | } | |
834a4ddd | 5635 | else if (UTF && *(U8*)s >= 0xc0 && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 5636 | char *t = s + UTF8SKIP(s); |
dfe13c55 | 5637 | while (*t & 0x80 && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
5638 | t += UTF8SKIP(t); |
5639 | if (d + (t - s) > e) | |
cea2e8a9 | 5640 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
5641 | Copy(s, d, t - s, char); |
5642 | d += t - s; | |
5643 | s = t; | |
5644 | } | |
463ee0b2 LW |
5645 | else |
5646 | break; | |
5647 | } | |
378cc40b LW |
5648 | } |
5649 | *d = '\0'; | |
5650 | d = dest; | |
79072805 | 5651 | if (*d) { |
3280af22 NIS |
5652 | if (PL_lex_state != LEX_NORMAL) |
5653 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 5654 | return s; |
378cc40b | 5655 | } |
748a9306 | 5656 | if (*s == '$' && s[1] && |
834a4ddd | 5657 | (isALNUM_lazy(s+1) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 5658 | { |
4810e5ec | 5659 | return s; |
5cd24f17 | 5660 | } |
79072805 LW |
5661 | if (*s == '{') { |
5662 | bracket = s; | |
5663 | s++; | |
5664 | } | |
5665 | else if (ck_uni) | |
5666 | check_uni(); | |
93a17b20 | 5667 | if (s < send) |
79072805 LW |
5668 | *d = *s++; |
5669 | d[1] = '\0'; | |
2b92dfce | 5670 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 5671 | *d = toCTRL(*s); |
5672 | s++; | |
de3bb511 | 5673 | } |
79072805 | 5674 | if (bracket) { |
748a9306 | 5675 | if (isSPACE(s[-1])) { |
fa83b5b6 | 5676 | while (s < send) { |
5677 | char ch = *s++; | |
5678 | if (ch != ' ' && ch != '\t') { | |
5679 | *d = ch; | |
5680 | break; | |
5681 | } | |
5682 | } | |
748a9306 | 5683 | } |
834a4ddd | 5684 | if (isIDFIRST_lazy(d)) { |
79072805 | 5685 | d++; |
a0ed51b3 LW |
5686 | if (UTF) { |
5687 | e = s; | |
834a4ddd | 5688 | while (e < send && isALNUM_lazy(e) || *e == ':') { |
a0ed51b3 | 5689 | e += UTF8SKIP(e); |
dfe13c55 | 5690 | while (e < send && *e & 0x80 && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
5691 | e += UTF8SKIP(e); |
5692 | } | |
5693 | Copy(s, d, e - s, char); | |
5694 | d += e - s; | |
5695 | s = e; | |
5696 | } | |
5697 | else { | |
2b92dfce | 5698 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 5699 | *d++ = *s++; |
2b92dfce | 5700 | if (d >= e) |
cea2e8a9 | 5701 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 5702 | } |
79072805 | 5703 | *d = '\0'; |
748a9306 | 5704 | while (s < send && (*s == ' ' || *s == '\t')) s++; |
ff68c719 | 5705 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
d008e5eb | 5706 | dTHR; /* only for ckWARN */ |
599cee73 | 5707 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 5708 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
cea2e8a9 | 5709 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
599cee73 | 5710 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
5711 | funny, dest, brack, funny, dest, brack); |
5712 | } | |
3280af22 | 5713 | PL_lex_fakebrack = PL_lex_brackets+1; |
79072805 | 5714 | bracket++; |
3280af22 | 5715 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 LW |
5716 | return s; |
5717 | } | |
2b92dfce GS |
5718 | } |
5719 | /* Handle extended ${^Foo} variables | |
5720 | * 1999-02-27 mjd-perl-patch@plover.com */ | |
5721 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
5722 | && isALNUM(*s)) | |
5723 | { | |
5724 | d++; | |
5725 | while (isALNUM(*s) && d < e) { | |
5726 | *d++ = *s++; | |
5727 | } | |
5728 | if (d >= e) | |
cea2e8a9 | 5729 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 5730 | *d = '\0'; |
79072805 LW |
5731 | } |
5732 | if (*s == '}') { | |
5733 | s++; | |
3280af22 NIS |
5734 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) |
5735 | PL_lex_state = LEX_INTERPEND; | |
748a9306 LW |
5736 | if (funny == '#') |
5737 | funny = '@'; | |
d008e5eb GS |
5738 | if (PL_lex_state == LEX_NORMAL) { |
5739 | dTHR; /* only for ckWARN */ | |
5740 | if (ckWARN(WARN_AMBIGUOUS) && | |
864dbfa3 | 5741 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 5742 | { |
cea2e8a9 | 5743 | Perl_warner(aTHX_ WARN_AMBIGUOUS, |
d008e5eb GS |
5744 | "Ambiguous use of %c{%s} resolved to %c%s", |
5745 | funny, dest, funny, dest); | |
5746 | } | |
5747 | } | |
79072805 LW |
5748 | } |
5749 | else { | |
5750 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 5751 | *dest = '\0'; |
79072805 LW |
5752 | } |
5753 | } | |
3280af22 NIS |
5754 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
5755 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
5756 | return s; |
5757 | } | |
5758 | ||
cea2e8a9 GS |
5759 | void |
5760 | Perl_pmflag(pTHX_ U16 *pmfl, int ch) | |
a0d0e21e | 5761 | { |
bbce6d69 | 5762 | if (ch == 'i') |
a0d0e21e | 5763 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
5764 | else if (ch == 'g') |
5765 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 5766 | else if (ch == 'c') |
5767 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
5768 | else if (ch == 'o') |
5769 | *pmfl |= PMf_KEEP; | |
5770 | else if (ch == 'm') | |
5771 | *pmfl |= PMf_MULTILINE; | |
5772 | else if (ch == 's') | |
5773 | *pmfl |= PMf_SINGLELINE; | |
5774 | else if (ch == 'x') | |
5775 | *pmfl |= PMf_EXTENDED; | |
5776 | } | |
378cc40b | 5777 | |
76e3520e | 5778 | STATIC char * |
cea2e8a9 | 5779 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 5780 | { |
79072805 LW |
5781 | PMOP *pm; |
5782 | char *s; | |
378cc40b | 5783 | |
09bef843 | 5784 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5785 | if (!s) { |
3280af22 NIS |
5786 | if (PL_lex_stuff) |
5787 | SvREFCNT_dec(PL_lex_stuff); | |
5788 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5789 | Perl_croak(aTHX_ "Search pattern not terminated"); |
378cc40b | 5790 | } |
bbce6d69 | 5791 | |
8782bef2 | 5792 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 5793 | if (PL_multi_open == '?') |
79072805 | 5794 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
5795 | if(type == OP_QR) { |
5796 | while (*s && strchr("iomsx", *s)) | |
5797 | pmflag(&pm->op_pmflags,*s++); | |
5798 | } | |
5799 | else { | |
5800 | while (*s && strchr("iogcmsx", *s)) | |
5801 | pmflag(&pm->op_pmflags,*s++); | |
5802 | } | |
4633a7c4 | 5803 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 5804 | |
3280af22 | 5805 | PL_lex_op = (OP*)pm; |
79072805 | 5806 | yylval.ival = OP_MATCH; |
378cc40b LW |
5807 | return s; |
5808 | } | |
5809 | ||
76e3520e | 5810 | STATIC char * |
cea2e8a9 | 5811 | S_scan_subst(pTHX_ char *start) |
79072805 | 5812 | { |
a0d0e21e | 5813 | register char *s; |
79072805 | 5814 | register PMOP *pm; |
4fdae800 | 5815 | I32 first_start; |
79072805 LW |
5816 | I32 es = 0; |
5817 | ||
79072805 LW |
5818 | yylval.ival = OP_NULL; |
5819 | ||
09bef843 | 5820 | s = scan_str(start,FALSE,FALSE); |
79072805 LW |
5821 | |
5822 | if (!s) { | |
3280af22 NIS |
5823 | if (PL_lex_stuff) |
5824 | SvREFCNT_dec(PL_lex_stuff); | |
5825 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5826 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
a687059c | 5827 | } |
79072805 | 5828 | |
3280af22 | 5829 | if (s[-1] == PL_multi_open) |
79072805 LW |
5830 | s--; |
5831 | ||
3280af22 | 5832 | first_start = PL_multi_start; |
09bef843 | 5833 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5834 | if (!s) { |
3280af22 NIS |
5835 | if (PL_lex_stuff) |
5836 | SvREFCNT_dec(PL_lex_stuff); | |
5837 | PL_lex_stuff = Nullsv; | |
5838 | if (PL_lex_repl) | |
5839 | SvREFCNT_dec(PL_lex_repl); | |
5840 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5841 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 5842 | } |
3280af22 | 5843 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 5844 | |
79072805 | 5845 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 5846 | while (*s) { |
a687059c LW |
5847 | if (*s == 'e') { |
5848 | s++; | |
2f3197b3 | 5849 | es++; |
a687059c | 5850 | } |
b3eb6a9b | 5851 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 5852 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
5853 | else |
5854 | break; | |
378cc40b | 5855 | } |
79072805 LW |
5856 | |
5857 | if (es) { | |
5858 | SV *repl; | |
0244c3a4 GS |
5859 | PL_sublex_info.super_bufptr = s; |
5860 | PL_sublex_info.super_bufend = PL_bufend; | |
5861 | PL_multi_end = 0; | |
79072805 | 5862 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 5863 | repl = newSVpvn("",0); |
463ee0b2 | 5864 | while (es-- > 0) |
a0d0e21e | 5865 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 5866 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 5867 | sv_catsv(repl, PL_lex_repl); |
79072805 | 5868 | sv_catpvn(repl, " };", 2); |
25da4f38 | 5869 | SvEVALED_on(repl); |
3280af22 NIS |
5870 | SvREFCNT_dec(PL_lex_repl); |
5871 | PL_lex_repl = repl; | |
378cc40b | 5872 | } |
79072805 | 5873 | |
4633a7c4 | 5874 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 5875 | PL_lex_op = (OP*)pm; |
79072805 | 5876 | yylval.ival = OP_SUBST; |
378cc40b LW |
5877 | return s; |
5878 | } | |
5879 | ||
76e3520e | 5880 | STATIC char * |
cea2e8a9 | 5881 | S_scan_trans(pTHX_ char *start) |
378cc40b | 5882 | { |
a0d0e21e | 5883 | register char* s; |
11343788 | 5884 | OP *o; |
79072805 LW |
5885 | short *tbl; |
5886 | I32 squash; | |
a0ed51b3 | 5887 | I32 del; |
79072805 | 5888 | I32 complement; |
a0ed51b3 LW |
5889 | I32 utf8; |
5890 | I32 count = 0; | |
79072805 LW |
5891 | |
5892 | yylval.ival = OP_NULL; | |
5893 | ||
09bef843 | 5894 | s = scan_str(start,FALSE,FALSE); |
79072805 | 5895 | if (!s) { |
3280af22 NIS |
5896 | if (PL_lex_stuff) |
5897 | SvREFCNT_dec(PL_lex_stuff); | |
5898 | PL_lex_stuff = Nullsv; | |
cea2e8a9 | 5899 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
a687059c | 5900 | } |
3280af22 | 5901 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
5902 | s--; |
5903 | ||
09bef843 | 5904 | s = scan_str(s,FALSE,FALSE); |
79072805 | 5905 | if (!s) { |
3280af22 NIS |
5906 | if (PL_lex_stuff) |
5907 | SvREFCNT_dec(PL_lex_stuff); | |
5908 | PL_lex_stuff = Nullsv; | |
5909 | if (PL_lex_repl) | |
5910 | SvREFCNT_dec(PL_lex_repl); | |
5911 | PL_lex_repl = Nullsv; | |
cea2e8a9 | 5912 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 5913 | } |
79072805 | 5914 | |
a0ed51b3 LW |
5915 | if (UTF) { |
5916 | o = newSVOP(OP_TRANS, 0, 0); | |
5917 | utf8 = OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF; | |
5918 | } | |
5919 | else { | |
5920 | New(803,tbl,256,short); | |
5921 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
5922 | utf8 = 0; | |
5923 | } | |
2f3197b3 | 5924 | |
a0ed51b3 LW |
5925 | complement = del = squash = 0; |
5926 | while (strchr("cdsCU", *s)) { | |
395c3793 | 5927 | if (*s == 'c') |
79072805 | 5928 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 5929 | else if (*s == 'd') |
a0ed51b3 LW |
5930 | del = OPpTRANS_DELETE; |
5931 | else if (*s == 's') | |
79072805 | 5932 | squash = OPpTRANS_SQUASH; |
a0ed51b3 LW |
5933 | else { |
5934 | switch (count++) { | |
5935 | case 0: | |
5936 | if (*s == 'C') | |
5937 | utf8 &= ~OPpTRANS_FROM_UTF; | |
5938 | else | |
5939 | utf8 |= OPpTRANS_FROM_UTF; | |
5940 | break; | |
5941 | case 1: | |
5942 | if (*s == 'C') | |
5943 | utf8 &= ~OPpTRANS_TO_UTF; | |
5944 | else | |
5945 | utf8 |= OPpTRANS_TO_UTF; | |
5946 | break; | |
5947 | default: | |
cea2e8a9 | 5948 | Perl_croak(aTHX_ "Too many /C and /U options"); |
a0ed51b3 LW |
5949 | } |
5950 | } | |
395c3793 LW |
5951 | s++; |
5952 | } | |
a0ed51b3 | 5953 | o->op_private = del|squash|complement|utf8; |
79072805 | 5954 | |
3280af22 | 5955 | PL_lex_op = o; |
79072805 LW |
5956 | yylval.ival = OP_TRANS; |
5957 | return s; | |
5958 | } | |
5959 | ||
76e3520e | 5960 | STATIC char * |
cea2e8a9 | 5961 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 5962 | { |
11343788 | 5963 | dTHR; |
79072805 LW |
5964 | SV *herewas; |
5965 | I32 op_type = OP_SCALAR; | |
5966 | I32 len; | |
5967 | SV *tmpstr; | |
5968 | char term; | |
5969 | register char *d; | |
fc36a67e | 5970 | register char *e; |
4633a7c4 | 5971 | char *peek; |
3280af22 | 5972 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
5973 | |
5974 | s += 2; | |
3280af22 NIS |
5975 | d = PL_tokenbuf; |
5976 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 5977 | if (!outer) |
79072805 | 5978 | *d++ = '\n'; |
4633a7c4 LW |
5979 | for (peek = s; *peek == ' ' || *peek == '\t'; peek++) ; |
5980 | if (*peek && strchr("`'\"",*peek)) { | |
5981 | s = peek; | |
79072805 | 5982 | term = *s++; |
3280af22 | 5983 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 5984 | d += len; |
3280af22 | 5985 | if (s < PL_bufend) |
79072805 | 5986 | s++; |
79072805 LW |
5987 | } |
5988 | else { | |
5989 | if (*s == '\\') | |
5990 | s++, term = '\''; | |
5991 | else | |
5992 | term = '"'; | |
834a4ddd | 5993 | if (!isALNUM_lazy(s)) |
4633a7c4 | 5994 | deprecate("bare << to mean <<\"\""); |
834a4ddd | 5995 | for (; isALNUM_lazy(s); s++) { |
fc36a67e | 5996 | if (d < e) |
5997 | *d++ = *s; | |
5998 | } | |
5999 | } | |
3280af22 | 6000 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6001 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6002 | *d++ = '\n'; |
6003 | *d = '\0'; | |
3280af22 | 6004 | len = d - PL_tokenbuf; |
6a27c188 | 6005 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6006 | d = strchr(s, '\r'); |
6007 | if (d) { | |
6008 | char *olds = s; | |
6009 | s = d; | |
3280af22 | 6010 | while (s < PL_bufend) { |
f63a84b2 LW |
6011 | if (*s == '\r') { |
6012 | *d++ = '\n'; | |
6013 | if (*++s == '\n') | |
6014 | s++; | |
6015 | } | |
6016 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6017 | *d++ = *s++; | |
6018 | s++; | |
6019 | } | |
6020 | else | |
6021 | *d++ = *s++; | |
6022 | } | |
6023 | *d = '\0'; | |
3280af22 NIS |
6024 | PL_bufend = d; |
6025 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6026 | s = olds; |
6027 | } | |
6028 | #endif | |
79072805 | 6029 | d = "\n"; |
3280af22 | 6030 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6031 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6032 | else |
79cb57f6 | 6033 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6034 | s += SvCUR(herewas); |
748a9306 | 6035 | |
8d6dde3e | 6036 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6037 | sv_upgrade(tmpstr, SVt_PVIV); |
6038 | if (term == '\'') { | |
79072805 | 6039 | op_type = OP_CONST; |
748a9306 LW |
6040 | SvIVX(tmpstr) = -1; |
6041 | } | |
6042 | else if (term == '`') { | |
79072805 | 6043 | op_type = OP_BACKTICK; |
748a9306 LW |
6044 | SvIVX(tmpstr) = '\\'; |
6045 | } | |
79072805 LW |
6046 | |
6047 | CLINE; | |
57843af0 | 6048 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6049 | PL_multi_open = PL_multi_close = '<'; |
6050 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6051 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6052 | char *bufptr = PL_sublex_info.super_bufptr; | |
6053 | char *bufend = PL_sublex_info.super_bufend; | |
6054 | char *olds = s - SvCUR(herewas); | |
6055 | s = strchr(bufptr, '\n'); | |
6056 | if (!s) | |
6057 | s = bufend; | |
6058 | d = s; | |
6059 | while (s < bufend && | |
6060 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6061 | if (*s++ == '\n') | |
57843af0 | 6062 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6063 | } |
6064 | if (s >= bufend) { | |
57843af0 | 6065 | CopLINE_set(PL_curcop, PL_multi_start); |
0244c3a4 GS |
6066 | missingterm(PL_tokenbuf); |
6067 | } | |
6068 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6069 | sv_setpvn(tmpstr,d+1,s-d); | |
6070 | s += len - 1; | |
6071 | sv_catpvn(herewas,s,bufend-s); | |
6072 | (void)strcpy(bufptr,SvPVX(herewas)); | |
6073 | ||
6074 | s = olds; | |
6075 | goto retval; | |
6076 | } | |
6077 | else if (!outer) { | |
79072805 | 6078 | d = s; |
3280af22 NIS |
6079 | while (s < PL_bufend && |
6080 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6081 | if (*s++ == '\n') |
57843af0 | 6082 | CopLINE_inc(PL_curcop); |
79072805 | 6083 | } |
3280af22 | 6084 | if (s >= PL_bufend) { |
57843af0 | 6085 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6086 | missingterm(PL_tokenbuf); |
79072805 LW |
6087 | } |
6088 | sv_setpvn(tmpstr,d+1,s-d); | |
6089 | s += len - 1; | |
57843af0 | 6090 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6091 | |
3280af22 NIS |
6092 | sv_catpvn(herewas,s,PL_bufend-s); |
6093 | sv_setsv(PL_linestr,herewas); | |
6094 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6095 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6096 | } |
6097 | else | |
6098 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6099 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6100 | if (!outer || |
3280af22 | 6101 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
57843af0 | 6102 | CopLINE_set(PL_curcop, PL_multi_start); |
3280af22 | 6103 | missingterm(PL_tokenbuf); |
79072805 | 6104 | } |
57843af0 | 6105 | CopLINE_inc(PL_curcop); |
3280af22 | 6106 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
6a27c188 | 6107 | #ifndef PERL_STRICT_CR |
3280af22 | 6108 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6109 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6110 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6111 | { |
3280af22 NIS |
6112 | PL_bufend[-2] = '\n'; |
6113 | PL_bufend--; | |
6114 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6115 | } |
3280af22 NIS |
6116 | else if (PL_bufend[-1] == '\r') |
6117 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6118 | } |
3280af22 NIS |
6119 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6120 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6121 | #endif |
3280af22 | 6122 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6123 | SV *sv = NEWSV(88,0); |
6124 | ||
93a17b20 | 6125 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6126 | sv_setsv(sv,PL_linestr); |
57843af0 | 6127 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6128 | } |
3280af22 NIS |
6129 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
6130 | s = PL_bufend - 1; | |
79072805 | 6131 | *s = ' '; |
3280af22 NIS |
6132 | sv_catsv(PL_linestr,herewas); |
6133 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
79072805 LW |
6134 | } |
6135 | else { | |
3280af22 NIS |
6136 | s = PL_bufend; |
6137 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6138 | } |
6139 | } | |
79072805 | 6140 | s++; |
0244c3a4 | 6141 | retval: |
57843af0 | 6142 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6143 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6144 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6145 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6146 | } |
8990e307 | 6147 | SvREFCNT_dec(herewas); |
3280af22 | 6148 | PL_lex_stuff = tmpstr; |
79072805 LW |
6149 | yylval.ival = op_type; |
6150 | return s; | |
6151 | } | |
6152 | ||
02aa26ce NT |
6153 | /* scan_inputsymbol |
6154 | takes: current position in input buffer | |
6155 | returns: new position in input buffer | |
6156 | side-effects: yylval and lex_op are set. | |
6157 | ||
6158 | This code handles: | |
6159 | ||
6160 | <> read from ARGV | |
6161 | <FH> read from filehandle | |
6162 | <pkg::FH> read from package qualified filehandle | |
6163 | <pkg'FH> read from package qualified filehandle | |
6164 | <$fh> read from filehandle in $fh | |
6165 | <*.h> filename glob | |
6166 | ||
6167 | */ | |
6168 | ||
76e3520e | 6169 | STATIC char * |
cea2e8a9 | 6170 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6171 | { |
02aa26ce | 6172 | register char *s = start; /* current position in buffer */ |
79072805 | 6173 | register char *d; |
fc36a67e | 6174 | register char *e; |
1b420867 | 6175 | char *end; |
79072805 LW |
6176 | I32 len; |
6177 | ||
3280af22 NIS |
6178 | d = PL_tokenbuf; /* start of temp holding space */ |
6179 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6180 | end = strchr(s, '\n'); |
6181 | if (!end) | |
6182 | end = PL_bufend; | |
6183 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6184 | |
6185 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6186 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6187 | */ |
6188 | ||
3280af22 | 6189 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6190 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6191 | if (s >= end) |
cea2e8a9 | 6192 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6193 | |
fc36a67e | 6194 | s++; |
02aa26ce NT |
6195 | |
6196 | /* check for <$fh> | |
6197 | Remember, only scalar variables are interpreted as filehandles by | |
6198 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6199 | treated as a glob() call. | |
6200 | This code makes use of the fact that except for the $ at the front, | |
6201 | a scalar variable and a filehandle look the same. | |
6202 | */ | |
4633a7c4 | 6203 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6204 | |
6205 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
834a4ddd | 6206 | while (*d && (isALNUM_lazy(d) || *d == '\'' || *d == ':')) |
79072805 | 6207 | d++; |
02aa26ce NT |
6208 | |
6209 | /* If we've tried to read what we allow filehandles to look like, and | |
6210 | there's still text left, then it must be a glob() and not a getline. | |
6211 | Use scan_str to pull out the stuff between the <> and treat it | |
6212 | as nothing more than a string. | |
6213 | */ | |
6214 | ||
3280af22 | 6215 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6216 | yylval.ival = OP_GLOB; |
6217 | set_csh(); | |
09bef843 | 6218 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6219 | if (!s) |
cea2e8a9 | 6220 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6221 | return s; |
6222 | } | |
395c3793 | 6223 | else { |
02aa26ce | 6224 | /* we're in a filehandle read situation */ |
3280af22 | 6225 | d = PL_tokenbuf; |
02aa26ce NT |
6226 | |
6227 | /* turn <> into <ARGV> */ | |
79072805 LW |
6228 | if (!len) |
6229 | (void)strcpy(d,"ARGV"); | |
02aa26ce NT |
6230 | |
6231 | /* if <$fh>, create the ops to turn the variable into a | |
6232 | filehandle | |
6233 | */ | |
79072805 | 6234 | if (*d == '$') { |
a0d0e21e | 6235 | I32 tmp; |
02aa26ce NT |
6236 | |
6237 | /* try to find it in the pad for this block, otherwise find | |
6238 | add symbol table ops | |
6239 | */ | |
11343788 MB |
6240 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
6241 | OP *o = newOP(OP_PADSV, 0); | |
6242 | o->op_targ = tmp; | |
f5284f61 | 6243 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, o); |
a0d0e21e LW |
6244 | } |
6245 | else { | |
6246 | GV *gv = gv_fetchpv(d+1,TRUE, SVt_PV); | |
3280af22 | 6247 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, |
a0d0e21e | 6248 | newUNOP(OP_RV2SV, 0, |
f5284f61 | 6249 | newGVOP(OP_GV, 0, gv))); |
a0d0e21e | 6250 | } |
f5284f61 IZ |
6251 | PL_lex_op->op_flags |= OPf_SPECIAL; |
6252 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ | |
79072805 LW |
6253 | yylval.ival = OP_NULL; |
6254 | } | |
02aa26ce NT |
6255 | |
6256 | /* If it's none of the above, it must be a literal filehandle | |
6257 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 6258 | else { |
85e6fe83 | 6259 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
3280af22 | 6260 | PL_lex_op = (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); |
79072805 LW |
6261 | yylval.ival = OP_NULL; |
6262 | } | |
6263 | } | |
02aa26ce | 6264 | |
79072805 LW |
6265 | return s; |
6266 | } | |
6267 | ||
02aa26ce NT |
6268 | |
6269 | /* scan_str | |
6270 | takes: start position in buffer | |
09bef843 SB |
6271 | keep_quoted preserve \ on the embedded delimiter(s) |
6272 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
6273 | returns: position to continue reading from buffer |
6274 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
6275 | updates the read buffer. | |
6276 | ||
6277 | This subroutine pulls a string out of the input. It is called for: | |
6278 | q single quotes q(literal text) | |
6279 | ' single quotes 'literal text' | |
6280 | qq double quotes qq(interpolate $here please) | |
6281 | " double quotes "interpolate $here please" | |
6282 | qx backticks qx(/bin/ls -l) | |
6283 | ` backticks `/bin/ls -l` | |
6284 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
6285 | m// regexp match m/this/ | |
6286 | s/// regexp substitute s/this/that/ | |
6287 | tr/// string transliterate tr/this/that/ | |
6288 | y/// string transliterate y/this/that/ | |
6289 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 6290 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
6291 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
6292 | ||
6293 | In most of these cases (all but <>, patterns and transliterate) | |
6294 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
6295 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
6296 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
6297 | calls scan_str(). | |
6298 | ||
6299 | It skips whitespace before the string starts, and treats the first | |
6300 | character as the delimiter. If the delimiter is one of ([{< then | |
6301 | the corresponding "close" character )]}> is used as the closing | |
6302 | delimiter. It allows quoting of delimiters, and if the string has | |
6303 | balanced delimiters ([{<>}]) it allows nesting. | |
6304 | ||
6305 | The lexer always reads these strings into lex_stuff, except in the | |
6306 | case of the operators which take *two* arguments (s/// and tr///) | |
6307 | when it checks to see if lex_stuff is full (presumably with the 1st | |
6308 | arg to s or tr) and if so puts the string into lex_repl. | |
6309 | ||
6310 | */ | |
6311 | ||
76e3520e | 6312 | STATIC char * |
09bef843 | 6313 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 6314 | { |
11343788 | 6315 | dTHR; |
02aa26ce NT |
6316 | SV *sv; /* scalar value: string */ |
6317 | char *tmps; /* temp string, used for delimiter matching */ | |
6318 | register char *s = start; /* current position in the buffer */ | |
6319 | register char term; /* terminating character */ | |
6320 | register char *to; /* current position in the sv's data */ | |
6321 | I32 brackets = 1; /* bracket nesting level */ | |
6322 | ||
6323 | /* skip space before the delimiter */ | |
fb73857a | 6324 | if (isSPACE(*s)) |
6325 | s = skipspace(s); | |
02aa26ce NT |
6326 | |
6327 | /* mark where we are, in case we need to report errors */ | |
79072805 | 6328 | CLINE; |
02aa26ce NT |
6329 | |
6330 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 6331 | term = *s; |
02aa26ce | 6332 | /* mark where we are */ |
57843af0 | 6333 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 6334 | PL_multi_open = term; |
02aa26ce NT |
6335 | |
6336 | /* find corresponding closing delimiter */ | |
93a17b20 | 6337 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
79072805 | 6338 | term = tmps[5]; |
3280af22 | 6339 | PL_multi_close = term; |
79072805 | 6340 | |
02aa26ce | 6341 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
6342 | assuming. 79 is the SV's initial length. What a random number. */ |
6343 | sv = NEWSV(87,79); | |
ed6116ce LW |
6344 | sv_upgrade(sv, SVt_PVIV); |
6345 | SvIVX(sv) = term; | |
a0d0e21e | 6346 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
6347 | |
6348 | /* move past delimiter and try to read a complete string */ | |
09bef843 SB |
6349 | if (keep_delims) |
6350 | sv_catpvn(sv, s, 1); | |
93a17b20 LW |
6351 | s++; |
6352 | for (;;) { | |
02aa26ce | 6353 | /* extend sv if need be */ |
3280af22 | 6354 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 6355 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 6356 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 6357 | |
02aa26ce | 6358 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
6359 | if (PL_multi_open == PL_multi_close) { |
6360 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 6361 | /* embedded newlines increment the current line number */ |
3280af22 | 6362 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6363 | CopLINE_inc(PL_curcop); |
02aa26ce | 6364 | /* handle quoted delimiters */ |
3280af22 | 6365 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 6366 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 6367 | s++; |
02aa26ce | 6368 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
6369 | else |
6370 | *to++ = *s++; | |
6371 | } | |
02aa26ce NT |
6372 | /* terminate when run out of buffer (the for() condition), or |
6373 | have found the terminator */ | |
93a17b20 LW |
6374 | else if (*s == term) |
6375 | break; | |
6376 | *to = *s; | |
6377 | } | |
6378 | } | |
02aa26ce NT |
6379 | |
6380 | /* if the terminator isn't the same as the start character (e.g., | |
6381 | matched brackets), we have to allow more in the quoting, and | |
6382 | be prepared for nested brackets. | |
6383 | */ | |
93a17b20 | 6384 | else { |
02aa26ce | 6385 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 6386 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 6387 | /* embedded newlines increment the line count */ |
3280af22 | 6388 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 6389 | CopLINE_inc(PL_curcop); |
02aa26ce | 6390 | /* backslashes can escape the open or closing characters */ |
3280af22 | 6391 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
6392 | if (!keep_quoted && |
6393 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
6394 | s++; |
6395 | else | |
6396 | *to++ = *s++; | |
6397 | } | |
02aa26ce | 6398 | /* allow nested opens and closes */ |
3280af22 | 6399 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 6400 | break; |
3280af22 | 6401 | else if (*s == PL_multi_open) |
93a17b20 LW |
6402 | brackets++; |
6403 | *to = *s; | |
6404 | } | |
6405 | } | |
02aa26ce | 6406 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 6407 | *to = '\0'; |
463ee0b2 | 6408 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 6409 | |
02aa26ce NT |
6410 | /* |
6411 | * this next chunk reads more into the buffer if we're not done yet | |
6412 | */ | |
6413 | ||
3280af22 | 6414 | if (s < PL_bufend) break; /* handle case where we are done yet :-) */ |
79072805 | 6415 | |
6a27c188 | 6416 | #ifndef PERL_STRICT_CR |
f63a84b2 | 6417 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
6418 | if ((to[-2] == '\r' && to[-1] == '\n') || |
6419 | (to[-2] == '\n' && to[-1] == '\r')) | |
6420 | { | |
f63a84b2 LW |
6421 | to[-2] = '\n'; |
6422 | to--; | |
6423 | SvCUR_set(sv, to - SvPVX(sv)); | |
6424 | } | |
6425 | else if (to[-1] == '\r') | |
6426 | to[-1] = '\n'; | |
6427 | } | |
6428 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
6429 | to[-1] = '\n'; | |
6430 | #endif | |
6431 | ||
02aa26ce NT |
6432 | /* if we're out of file, or a read fails, bail and reset the current |
6433 | line marker so we can report where the unterminated string began | |
6434 | */ | |
3280af22 NIS |
6435 | if (!PL_rsfp || |
6436 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 6437 | sv_free(sv); |
57843af0 | 6438 | CopLINE_set(PL_curcop, PL_multi_start); |
79072805 LW |
6439 | return Nullch; |
6440 | } | |
02aa26ce | 6441 | /* we read a line, so increment our line counter */ |
57843af0 | 6442 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 6443 | |
02aa26ce | 6444 | /* update debugger info */ |
3280af22 | 6445 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6446 | SV *sv = NEWSV(88,0); |
6447 | ||
93a17b20 | 6448 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6449 | sv_setsv(sv,PL_linestr); |
57843af0 | 6450 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 6451 | } |
a0ed51b3 | 6452 | |
3280af22 NIS |
6453 | /* having changed the buffer, we must update PL_bufend */ |
6454 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
378cc40b | 6455 | } |
02aa26ce NT |
6456 | |
6457 | /* at this point, we have successfully read the delimited string */ | |
6458 | ||
09bef843 SB |
6459 | if (keep_delims) |
6460 | sv_catpvn(sv, s, 1); | |
57843af0 | 6461 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 6462 | s++; |
02aa26ce NT |
6463 | |
6464 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
6465 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
6466 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 6467 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 6468 | } |
02aa26ce NT |
6469 | |
6470 | /* decide whether this is the first or second quoted string we've read | |
6471 | for this op | |
6472 | */ | |
6473 | ||
3280af22 NIS |
6474 | if (PL_lex_stuff) |
6475 | PL_lex_repl = sv; | |
79072805 | 6476 | else |
3280af22 | 6477 | PL_lex_stuff = sv; |
378cc40b LW |
6478 | return s; |
6479 | } | |
6480 | ||
02aa26ce NT |
6481 | /* |
6482 | scan_num | |
6483 | takes: pointer to position in buffer | |
6484 | returns: pointer to new position in buffer | |
6485 | side-effects: builds ops for the constant in yylval.op | |
6486 | ||
6487 | Read a number in any of the formats that Perl accepts: | |
6488 | ||
4f19785b | 6489 | 0(x[0-7A-F]+)|([0-7]+)|(b[01]) |
02aa26ce NT |
6490 | [\d_]+(\.[\d_]*)?[Ee](\d+) |
6491 | ||
6492 | Underbars (_) are allowed in decimal numbers. If -w is on, | |
6493 | underbars before a decimal point must be at three digit intervals. | |
6494 | ||
3280af22 | 6495 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
6496 | thing it reads. |
6497 | ||
6498 | If it reads a number without a decimal point or an exponent, it will | |
6499 | try converting the number to an integer and see if it can do so | |
6500 | without loss of precision. | |
6501 | */ | |
6502 | ||
378cc40b | 6503 | char * |
864dbfa3 | 6504 | Perl_scan_num(pTHX_ char *start) |
378cc40b | 6505 | { |
02aa26ce NT |
6506 | register char *s = start; /* current position in buffer */ |
6507 | register char *d; /* destination in temp buffer */ | |
6508 | register char *e; /* end of temp buffer */ | |
b8403495 | 6509 | IV tryiv; /* used to see if it can be an IV */ |
65202027 | 6510 | NV value; /* number read, as a double */ |
02aa26ce | 6511 | SV *sv; /* place to put the converted number */ |
b8403495 | 6512 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 6513 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 6514 | static char number_too_long[] = "Number too long"; |
378cc40b | 6515 | |
02aa26ce NT |
6516 | /* We use the first character to decide what type of number this is */ |
6517 | ||
378cc40b | 6518 | switch (*s) { |
79072805 | 6519 | default: |
cea2e8a9 | 6520 | Perl_croak(aTHX_ "panic: scan_num"); |
02aa26ce NT |
6521 | |
6522 | /* if it starts with a 0, it could be an octal number, a decimal in | |
4f19785b | 6523 | 0.13 disguise, or a hexadecimal number, or a binary number. |
02aa26ce | 6524 | */ |
378cc40b LW |
6525 | case '0': |
6526 | { | |
02aa26ce NT |
6527 | /* variables: |
6528 | u holds the "number so far" | |
4f19785b WSI |
6529 | shift the power of 2 of the base |
6530 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
6531 | overflowed was the number more than we can hold? |
6532 | ||
6533 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
6534 | we in octal/hex/binary?" indicator to disallow hex characters |
6535 | when in octal mode. | |
02aa26ce | 6536 | */ |
f248d071 | 6537 | dTHR; |
9e24b6e2 JH |
6538 | NV n = 0.0; |
6539 | UV u = 0; | |
79072805 | 6540 | I32 shift; |
9e24b6e2 JH |
6541 | bool overflowed = FALSE; |
6542 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; | |
6543 | static char* bases[5] = { "", "binary", "", "octal", | |
6544 | "hexadecimal" }; | |
6545 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
6546 | "Hexadecimal" }; | |
6547 | static char *maxima[5] = { "", | |
6548 | "0b11111111111111111111111111111111", | |
6549 | "", | |
893fe2c2 | 6550 | "037777777777", |
9e24b6e2 JH |
6551 | "0xffffffff" }; |
6552 | char *base, *Base, *max; | |
378cc40b | 6553 | |
02aa26ce | 6554 | /* check for hex */ |
378cc40b LW |
6555 | if (s[1] == 'x') { |
6556 | shift = 4; | |
6557 | s += 2; | |
4f19785b WSI |
6558 | } else if (s[1] == 'b') { |
6559 | shift = 1; | |
6560 | s += 2; | |
378cc40b | 6561 | } |
02aa26ce | 6562 | /* check for a decimal in disguise */ |
b78218b7 | 6563 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 6564 | goto decimal; |
02aa26ce | 6565 | /* so it must be octal */ |
378cc40b LW |
6566 | else |
6567 | shift = 3; | |
9e24b6e2 JH |
6568 | |
6569 | base = bases[shift]; | |
6570 | Base = Bases[shift]; | |
6571 | max = maxima[shift]; | |
02aa26ce | 6572 | |
4f19785b | 6573 | /* read the rest of the number */ |
378cc40b | 6574 | for (;;) { |
9e24b6e2 | 6575 | /* x is used in the overflow test, |
893fe2c2 | 6576 | b is the digit we're adding on. */ |
9e24b6e2 | 6577 | UV x, b; |
55497cff | 6578 | |
378cc40b | 6579 | switch (*s) { |
02aa26ce NT |
6580 | |
6581 | /* if we don't mention it, we're done */ | |
378cc40b LW |
6582 | default: |
6583 | goto out; | |
02aa26ce NT |
6584 | |
6585 | /* _ are ignored */ | |
de3bb511 LW |
6586 | case '_': |
6587 | s++; | |
6588 | break; | |
02aa26ce NT |
6589 | |
6590 | /* 8 and 9 are not octal */ | |
378cc40b | 6591 | case '8': case '9': |
4f19785b | 6592 | if (shift == 3) |
cea2e8a9 | 6593 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 6594 | /* FALL THROUGH */ |
02aa26ce NT |
6595 | |
6596 | /* octal digits */ | |
4f19785b | 6597 | case '2': case '3': case '4': |
378cc40b | 6598 | case '5': case '6': case '7': |
4f19785b | 6599 | if (shift == 1) |
cea2e8a9 | 6600 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
6601 | /* FALL THROUGH */ |
6602 | ||
6603 | case '0': case '1': | |
02aa26ce | 6604 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 6605 | goto digit; |
02aa26ce NT |
6606 | |
6607 | /* hex digits */ | |
378cc40b LW |
6608 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
6609 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 6610 | /* make sure they said 0x */ |
378cc40b LW |
6611 | if (shift != 4) |
6612 | goto out; | |
55497cff | 6613 | b = (*s++ & 7) + 9; |
02aa26ce NT |
6614 | |
6615 | /* Prepare to put the digit we have onto the end | |
6616 | of the number so far. We check for overflows. | |
6617 | */ | |
6618 | ||
55497cff | 6619 | digit: |
9e24b6e2 JH |
6620 | if (!overflowed) { |
6621 | x = u << shift; /* make room for the digit */ | |
6622 | ||
6623 | if ((x >> shift) != u | |
6624 | && !(PL_hints & HINT_NEW_BINARY)) { | |
6625 | dTHR; | |
6626 | overflowed = TRUE; | |
6627 | n = (NV) u; | |
767a6a26 PM |
6628 | if (ckWARN_d(WARN_OVERFLOW)) |
6629 | Perl_warner(aTHX_ WARN_OVERFLOW, | |
9e24b6e2 JH |
6630 | "Integer overflow in %s number", |
6631 | base); | |
6632 | } else | |
6633 | u = x | b; /* add the digit to the end */ | |
6634 | } | |
6635 | if (overflowed) { | |
6636 | n *= nvshift[shift]; | |
6637 | /* If an NV has not enough bits in its | |
6638 | * mantissa to represent an UV this summing of | |
6639 | * small low-order numbers is a waste of time | |
6640 | * (because the NV cannot preserve the | |
6641 | * low-order bits anyway): we could just | |
6642 | * remember when did we overflow and in the | |
6643 | * end just multiply n by the right | |
6644 | * amount. */ | |
6645 | n += (NV) b; | |
55497cff | 6646 | } |
378cc40b LW |
6647 | break; |
6648 | } | |
6649 | } | |
02aa26ce NT |
6650 | |
6651 | /* if we get here, we had success: make a scalar value from | |
6652 | the number. | |
6653 | */ | |
378cc40b | 6654 | out: |
79072805 | 6655 | sv = NEWSV(92,0); |
9e24b6e2 JH |
6656 | if (overflowed) { |
6657 | dTHR; | |
767a6a26 PM |
6658 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
6659 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6660 | "%s number > %s non-portable", |
6661 | Base, max); | |
6662 | sv_setnv(sv, n); | |
6663 | } | |
6664 | else { | |
15041a67 | 6665 | #if UVSIZE > 4 |
9e24b6e2 | 6666 | dTHR; |
767a6a26 PM |
6667 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
6668 | Perl_warner(aTHX_ WARN_PORTABLE, | |
9e24b6e2 JH |
6669 | "%s number > %s non-portable", |
6670 | Base, max); | |
2cc4c2dc | 6671 | #endif |
9e24b6e2 JH |
6672 | sv_setuv(sv, u); |
6673 | } | |
2cc4c2dc | 6674 | if (PL_hints & HINT_NEW_BINARY) |
b3ac6de7 | 6675 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
6676 | } |
6677 | break; | |
02aa26ce NT |
6678 | |
6679 | /* | |
6680 | handle decimal numbers. | |
6681 | we're also sent here when we read a 0 as the first digit | |
6682 | */ | |
378cc40b LW |
6683 | case '1': case '2': case '3': case '4': case '5': |
6684 | case '6': case '7': case '8': case '9': case '.': | |
6685 | decimal: | |
3280af22 NIS |
6686 | d = PL_tokenbuf; |
6687 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 6688 | floatit = FALSE; |
02aa26ce NT |
6689 | |
6690 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 6691 | while (isDIGIT(*s) || *s == '_') { |
02aa26ce NT |
6692 | /* skip underscores, checking for misplaced ones |
6693 | if -w is on | |
6694 | */ | |
93a17b20 | 6695 | if (*s == '_') { |
d008e5eb | 6696 | dTHR; /* only for ckWARN */ |
599cee73 | 6697 | if (ckWARN(WARN_SYNTAX) && lastub && s - lastub != 3) |
cea2e8a9 | 6698 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
93a17b20 LW |
6699 | lastub = ++s; |
6700 | } | |
fc36a67e | 6701 | else { |
02aa26ce | 6702 | /* check for end of fixed-length buffer */ |
fc36a67e | 6703 | if (d >= e) |
cea2e8a9 | 6704 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 6705 | /* if we're ok, copy the character */ |
378cc40b | 6706 | *d++ = *s++; |
fc36a67e | 6707 | } |
378cc40b | 6708 | } |
02aa26ce NT |
6709 | |
6710 | /* final misplaced underbar check */ | |
d008e5eb GS |
6711 | if (lastub && s - lastub != 3) { |
6712 | dTHR; | |
6713 | if (ckWARN(WARN_SYNTAX)) | |
cea2e8a9 | 6714 | Perl_warner(aTHX_ WARN_SYNTAX, "Misplaced _ in number"); |
d008e5eb | 6715 | } |
02aa26ce NT |
6716 | |
6717 | /* read a decimal portion if there is one. avoid | |
6718 | 3..5 being interpreted as the number 3. followed | |
6719 | by .5 | |
6720 | */ | |
2f3197b3 | 6721 | if (*s == '.' && s[1] != '.') { |
79072805 | 6722 | floatit = TRUE; |
378cc40b | 6723 | *d++ = *s++; |
02aa26ce NT |
6724 | |
6725 | /* copy, ignoring underbars, until we run out of | |
6726 | digits. Note: no misplaced underbar checks! | |
6727 | */ | |
fc36a67e | 6728 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 6729 | /* fixed length buffer check */ |
fc36a67e | 6730 | if (d >= e) |
cea2e8a9 | 6731 | Perl_croak(aTHX_ number_too_long); |
fc36a67e | 6732 | if (*s != '_') |
6733 | *d++ = *s; | |
378cc40b LW |
6734 | } |
6735 | } | |
02aa26ce NT |
6736 | |
6737 | /* read exponent part, if present */ | |
93a17b20 | 6738 | if (*s && strchr("eE",*s) && strchr("+-0123456789",s[1])) { |
79072805 LW |
6739 | floatit = TRUE; |
6740 | s++; | |
02aa26ce NT |
6741 | |
6742 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 6743 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce NT |
6744 | |
6745 | /* allow positive or negative exponent */ | |
378cc40b LW |
6746 | if (*s == '+' || *s == '-') |
6747 | *d++ = *s++; | |
02aa26ce NT |
6748 | |
6749 | /* read digits of exponent (no underbars :-) */ | |
fc36a67e | 6750 | while (isDIGIT(*s)) { |
6751 | if (d >= e) | |
cea2e8a9 | 6752 | Perl_croak(aTHX_ number_too_long); |
378cc40b | 6753 | *d++ = *s++; |
fc36a67e | 6754 | } |
378cc40b | 6755 | } |
02aa26ce NT |
6756 | |
6757 | /* terminate the string */ | |
378cc40b | 6758 | *d = '\0'; |
02aa26ce NT |
6759 | |
6760 | /* make an sv from the string */ | |
79072805 | 6761 | sv = NEWSV(92,0); |
097ee67d JH |
6762 | |
6763 | value = Atof(PL_tokenbuf); | |
02aa26ce NT |
6764 | |
6765 | /* | |
6766 | See if we can make do with an integer value without loss of | |
6767 | precision. We use I_V to cast to an int, because some | |
6768 | compilers have issues. Then we try casting it back and see | |
6769 | if it was the same. We only do this if we know we | |
6770 | specifically read an integer. | |
6771 | ||
6772 | Note: if floatit is true, then we don't need to do the | |
6773 | conversion at all. | |
6774 | */ | |
1e422769 | 6775 | tryiv = I_V(value); |
65202027 | 6776 | if (!floatit && (NV)tryiv == value) |
1e422769 | 6777 | sv_setiv(sv, tryiv); |
2f3197b3 | 6778 | else |
1e422769 | 6779 | sv_setnv(sv, value); |
b8403495 JH |
6780 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
6781 | (PL_hints & HINT_NEW_INTEGER) ) | |
3280af22 | 6782 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
6783 | (floatit ? "float" : "integer"), |
6784 | sv, Nullsv, NULL); | |
378cc40b | 6785 | break; |
79072805 | 6786 | } |
a687059c | 6787 | |
02aa26ce NT |
6788 | /* make the op for the constant and return */ |
6789 | ||
79072805 | 6790 | yylval.opval = newSVOP(OP_CONST, 0, sv); |
a687059c | 6791 | |
378cc40b LW |
6792 | return s; |
6793 | } | |
6794 | ||
76e3520e | 6795 | STATIC char * |
cea2e8a9 | 6796 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 6797 | { |
11343788 | 6798 | dTHR; |
79072805 | 6799 | register char *eol; |
378cc40b | 6800 | register char *t; |
79cb57f6 | 6801 | SV *stuff = newSVpvn("",0); |
79072805 | 6802 | bool needargs = FALSE; |
378cc40b | 6803 | |
79072805 | 6804 | while (!needargs) { |
85e6fe83 | 6805 | if (*s == '.' || *s == '}') { |
79072805 | 6806 | /*SUPPRESS 530*/ |
51882d45 GS |
6807 | #ifdef PERL_STRICT_CR |
6808 | for (t = s+1;*t == ' ' || *t == '\t'; t++) ; | |
6809 | #else | |
6810 | for (t = s+1;*t == ' ' || *t == '\t' || *t == '\r'; t++) ; | |
6811 | #endif | |
6a65c6a0 | 6812 | if (*t == '\n' || t == PL_bufend) |
79072805 LW |
6813 | break; |
6814 | } | |
3280af22 | 6815 | if (PL_in_eval && !PL_rsfp) { |
93a17b20 | 6816 | eol = strchr(s,'\n'); |
0f85fab0 | 6817 | if (!eol++) |
3280af22 | 6818 | eol = PL_bufend; |
0f85fab0 LW |
6819 | } |
6820 | else | |
3280af22 | 6821 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 6822 | if (*s != '#') { |
a0d0e21e LW |
6823 | for (t = s; t < eol; t++) { |
6824 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
6825 | needargs = FALSE; | |
6826 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 6827 | } |
a0d0e21e LW |
6828 | if (*t == '@' || *t == '^') |
6829 | needargs = TRUE; | |
378cc40b | 6830 | } |
a0d0e21e | 6831 | sv_catpvn(stuff, s, eol-s); |
79072805 LW |
6832 | } |
6833 | s = eol; | |
3280af22 NIS |
6834 | if (PL_rsfp) { |
6835 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
6836 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
6837 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
79072805 | 6838 | if (!s) { |
3280af22 | 6839 | s = PL_bufptr; |
79072805 | 6840 | yyerror("Format not terminated"); |
378cc40b LW |
6841 | break; |
6842 | } | |
378cc40b | 6843 | } |
463ee0b2 | 6844 | incline(s); |
79072805 | 6845 | } |
a0d0e21e LW |
6846 | enough: |
6847 | if (SvCUR(stuff)) { | |
3280af22 | 6848 | PL_expect = XTERM; |
79072805 | 6849 | if (needargs) { |
3280af22 NIS |
6850 | PL_lex_state = LEX_NORMAL; |
6851 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
6852 | force_next(','); |
6853 | } | |
a0d0e21e | 6854 | else |
3280af22 NIS |
6855 | PL_lex_state = LEX_FORMLINE; |
6856 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); | |
79072805 | 6857 | force_next(THING); |
3280af22 | 6858 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 6859 | force_next(LSTOP); |
378cc40b | 6860 | } |
79072805 | 6861 | else { |
8990e307 | 6862 | SvREFCNT_dec(stuff); |
3280af22 NIS |
6863 | PL_lex_formbrack = 0; |
6864 | PL_bufptr = s; | |
79072805 LW |
6865 | } |
6866 | return s; | |
378cc40b | 6867 | } |
a687059c | 6868 | |
76e3520e | 6869 | STATIC void |
cea2e8a9 | 6870 | S_set_csh(pTHX) |
a687059c | 6871 | { |
ae986130 | 6872 | #ifdef CSH |
3280af22 NIS |
6873 | if (!PL_cshlen) |
6874 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 6875 | #endif |
a687059c | 6876 | } |
463ee0b2 | 6877 | |
ba6d6ac9 | 6878 | I32 |
864dbfa3 | 6879 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 6880 | { |
11343788 | 6881 | dTHR; |
3280af22 NIS |
6882 | I32 oldsavestack_ix = PL_savestack_ix; |
6883 | CV* outsidecv = PL_compcv; | |
748a9306 | 6884 | AV* comppadlist; |
8990e307 | 6885 | |
3280af22 NIS |
6886 | if (PL_compcv) { |
6887 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 6888 | } |
3280af22 NIS |
6889 | save_I32(&PL_subline); |
6890 | save_item(PL_subname); | |
6891 | SAVEI32(PL_padix); | |
6892 | SAVESPTR(PL_curpad); | |
6893 | SAVESPTR(PL_comppad); | |
6894 | SAVESPTR(PL_comppad_name); | |
6895 | SAVESPTR(PL_compcv); | |
6896 | SAVEI32(PL_comppad_name_fill); | |
6897 | SAVEI32(PL_min_intro_pending); | |
6898 | SAVEI32(PL_max_intro_pending); | |
6899 | SAVEI32(PL_pad_reset_pending); | |
6900 | ||
6901 | PL_compcv = (CV*)NEWSV(1104,0); | |
6902 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
6903 | CvFLAGS(PL_compcv) |= flags; | |
6904 | ||
6905 | PL_comppad = newAV(); | |
6906 | av_push(PL_comppad, Nullsv); | |
6907 | PL_curpad = AvARRAY(PL_comppad); | |
6908 | PL_comppad_name = newAV(); | |
6909 | PL_comppad_name_fill = 0; | |
6910 | PL_min_intro_pending = 0; | |
6911 | PL_padix = 0; | |
57843af0 | 6912 | PL_subline = CopLINE(PL_curcop); |
6d4ff0d2 | 6913 | #ifdef USE_THREADS |
79cb57f6 | 6914 | av_store(PL_comppad_name, 0, newSVpvn("@_", 2)); |
533c011a NIS |
6915 | PL_curpad[0] = (SV*)newAV(); |
6916 | SvPADMY_on(PL_curpad[0]); /* XXX Needed? */ | |
6d4ff0d2 | 6917 | #endif /* USE_THREADS */ |
748a9306 LW |
6918 | |
6919 | comppadlist = newAV(); | |
6920 | AvREAL_off(comppadlist); | |
3280af22 NIS |
6921 | av_store(comppadlist, 0, (SV*)PL_comppad_name); |
6922 | av_store(comppadlist, 1, (SV*)PL_comppad); | |
748a9306 | 6923 | |
3280af22 NIS |
6924 | CvPADLIST(PL_compcv) = comppadlist; |
6925 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); | |
11343788 | 6926 | #ifdef USE_THREADS |
533c011a NIS |
6927 | CvOWNER(PL_compcv) = 0; |
6928 | New(666, CvMUTEXP(PL_compcv), 1, perl_mutex); | |
6929 | MUTEX_INIT(CvMUTEXP(PL_compcv)); | |
11343788 | 6930 | #endif /* USE_THREADS */ |
748a9306 | 6931 | |
8990e307 LW |
6932 | return oldsavestack_ix; |
6933 | } | |
6934 | ||
6935 | int | |
864dbfa3 | 6936 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 6937 | { |
11343788 | 6938 | dTHR; |
faef0170 | 6939 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 6940 | yyerror(s); |
faef0170 | 6941 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 6942 | return 0; |
8990e307 LW |
6943 | } |
6944 | ||
6945 | int | |
864dbfa3 | 6946 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 6947 | { |
11343788 | 6948 | dTHR; |
68dc0745 | 6949 | char *where = NULL; |
6950 | char *context = NULL; | |
6951 | int contlen = -1; | |
46fc3d4c | 6952 | SV *msg; |
463ee0b2 | 6953 | |
3280af22 | 6954 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 6955 | where = "at EOF"; |
3280af22 NIS |
6956 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
6957 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
6958 | while (isSPACE(*PL_oldoldbufptr)) | |
6959 | PL_oldoldbufptr++; | |
6960 | context = PL_oldoldbufptr; | |
6961 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 6962 | } |
3280af22 NIS |
6963 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
6964 | PL_oldbufptr != PL_bufptr) { | |
6965 | while (isSPACE(*PL_oldbufptr)) | |
6966 | PL_oldbufptr++; | |
6967 | context = PL_oldbufptr; | |
6968 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
6969 | } |
6970 | else if (yychar > 255) | |
68dc0745 | 6971 | where = "next token ???"; |
463ee0b2 | 6972 | else if ((yychar & 127) == 127) { |
3280af22 NIS |
6973 | if (PL_lex_state == LEX_NORMAL || |
6974 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 6975 | where = "at end of line"; |
3280af22 | 6976 | else if (PL_lex_inpat) |
68dc0745 | 6977 | where = "within pattern"; |
463ee0b2 | 6978 | else |
68dc0745 | 6979 | where = "within string"; |
463ee0b2 | 6980 | } |
46fc3d4c | 6981 | else { |
79cb57f6 | 6982 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 6983 | if (yychar < 32) |
cea2e8a9 | 6984 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 6985 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 6986 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 6987 | else |
cea2e8a9 | 6988 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 6989 | where = SvPVX(where_sv); |
463ee0b2 | 6990 | } |
46fc3d4c | 6991 | msg = sv_2mortal(newSVpv(s, 0)); |
57def98f | 6992 | Perl_sv_catpvf(aTHX_ msg, " at %_ line %"IVdf", ", |
57843af0 | 6993 | CopFILESV(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 6994 | if (context) |
cea2e8a9 | 6995 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 6996 | else |
cea2e8a9 | 6997 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 6998 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 6999 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7000 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7001 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7002 | PL_multi_end = 0; |
a0d0e21e | 7003 | } |
faef0170 | 7004 | if (PL_in_eval & EVAL_WARNONLY) |
cea2e8a9 | 7005 | Perl_warn(aTHX_ "%_", msg); |
463ee0b2 | 7006 | else |
5a844595 GS |
7007 | qerror(msg); |
7008 | if (PL_error_count >= 10) | |
cc49e20b | 7009 | Perl_croak(aTHX_ "%_ has too many errors.\n", CopFILESV(PL_curcop)); |
3280af22 NIS |
7010 | PL_in_my = 0; |
7011 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7012 | return 0; |
7013 | } | |
4e35701f | 7014 | |
161b471a | 7015 | |
51371543 | 7016 | #ifdef PERL_OBJECT |
51371543 GS |
7017 | #include "XSUB.h" |
7018 | #endif | |
7019 | ||
ffb4593c NT |
7020 | /* |
7021 | * restore_rsfp | |
7022 | * Restore a source filter. | |
7023 | */ | |
7024 | ||
51371543 GS |
7025 | static void |
7026 | restore_rsfp(pTHXo_ void *f) | |
7027 | { | |
7028 | PerlIO *fp = (PerlIO*)f; | |
7029 | ||
7030 | if (PL_rsfp == PerlIO_stdin()) | |
7031 | PerlIO_clearerr(PL_rsfp); | |
7032 | else if (PL_rsfp && (PL_rsfp != fp)) | |
7033 | PerlIO_close(PL_rsfp); | |
7034 | PL_rsfp = fp; | |
7035 | } | |
7036 | ||
ffb4593c NT |
7037 | /* |
7038 | * restore_expect | |
7039 | * Restores the state of PL_expect when the lexing that begun with a | |
7040 | * start_lex() call has ended. | |
7041 | */ | |
7042 | ||
51371543 GS |
7043 | static void |
7044 | restore_expect(pTHXo_ void *e) | |
7045 | { | |
7046 | /* a safe way to store a small integer in a pointer */ | |
7047 | PL_expect = (expectation)((char *)e - PL_tokenbuf); | |
7048 | } | |
7049 | ||
ffb4593c NT |
7050 | /* |
7051 | * restore_lex_expect | |
7052 | * Restores the state of PL_lex_expect when the lexing that begun with a | |
7053 | * start_lex() call has ended. | |
7054 | */ | |
7055 | ||
51371543 GS |
7056 | static void |
7057 | restore_lex_expect(pTHXo_ void *e) | |
7058 | { | |
7059 | /* a safe way to store a small integer in a pointer */ | |
7060 | PL_lex_expect = (expectation)((char *)e - PL_tokenbuf); | |
7061 | } |