Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
770526c1 | 4 | * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others |
a687059c | 5 | * |
d48672a2 LW |
6 | * You may distribute under the terms of either the GNU General Public |
7 | * License or the Artistic License, as specified in the README file. | |
378cc40b | 8 | * |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
12 | * "It all comes from here, the stench and the peril." --Frodo | |
378cc40b LW |
13 | */ |
14 | ||
9cbb5ea2 GS |
15 | /* |
16 | * This file is the lexer for Perl. It's closely linked to the | |
4e553d73 | 17 | * parser, perly.y. |
ffb4593c NT |
18 | * |
19 | * The main routine is yylex(), which returns the next token. | |
20 | */ | |
21 | ||
378cc40b | 22 | #include "EXTERN.h" |
864dbfa3 | 23 | #define PERL_IN_TOKE_C |
378cc40b | 24 | #include "perl.h" |
378cc40b | 25 | |
12fbd33b DM |
26 | #define yychar (*PL_yycharp) |
27 | #define yylval (*PL_yylvalp) | |
d3b6f988 | 28 | |
fc36a67e | 29 | static char ident_too_long[] = "Identifier too long"; |
4ac733c9 | 30 | static char c_without_g[] = "Use of /c modifier is meaningless without /g"; |
64e578a2 | 31 | static char c_in_subst[] = "Use of /c modifier is meaningless in s///"; |
8903cb82 | 32 | |
acfe0abc | 33 | static void restore_rsfp(pTHX_ void *f); |
6e3aabd6 | 34 | #ifndef PERL_NO_UTF16_FILTER |
acfe0abc GS |
35 | static I32 utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen); |
36 | static I32 utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen); | |
6e3aabd6 | 37 | #endif |
51371543 | 38 | |
9059aa12 LW |
39 | #define XFAKEBRACK 128 |
40 | #define XENUMMASK 127 | |
41 | ||
39e02b42 JH |
42 | #ifdef USE_UTF8_SCRIPTS |
43 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 44 | #else |
746b446a | 45 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || (PL_hints & HINT_UTF8)) |
2b9d42f0 | 46 | #endif |
a0ed51b3 | 47 | |
61f0cdd9 | 48 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
49 | * 1999-02-27 mjd-perl-patch@plover.com */ |
50 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
51 | ||
bf4acbe4 GS |
52 | /* On MacOS, respect nonbreaking spaces */ |
53 | #ifdef MACOS_TRADITIONAL | |
54 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\312'||(c)=='\t') | |
55 | #else | |
56 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') | |
57 | #endif | |
58 | ||
ffb4593c NT |
59 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
60 | * They are arranged oddly so that the guard on the switch statement | |
79072805 LW |
61 | * can get by with a single comparison (if the compiler is smart enough). |
62 | */ | |
63 | ||
fb73857a | 64 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
65 | ||
55497cff | 66 | #define LEX_NORMAL 10 |
67 | #define LEX_INTERPNORMAL 9 | |
68 | #define LEX_INTERPCASEMOD 8 | |
69 | #define LEX_INTERPPUSH 7 | |
70 | #define LEX_INTERPSTART 6 | |
71 | #define LEX_INTERPEND 5 | |
72 | #define LEX_INTERPENDMAYBE 4 | |
73 | #define LEX_INTERPCONCAT 3 | |
74 | #define LEX_INTERPCONST 2 | |
75 | #define LEX_FORMLINE 1 | |
76 | #define LEX_KNOWNEXT 0 | |
79072805 | 77 | |
bbf60fe6 DM |
78 | #ifdef DEBUGGING |
79 | static char* lex_state_names[] = { | |
80 | "KNOWNEXT", | |
81 | "FORMLINE", | |
82 | "INTERPCONST", | |
83 | "INTERPCONCAT", | |
84 | "INTERPENDMAYBE", | |
85 | "INTERPEND", | |
86 | "INTERPSTART", | |
87 | "INTERPPUSH", | |
88 | "INTERPCASEMOD", | |
89 | "INTERPNORMAL", | |
90 | "NORMAL" | |
91 | }; | |
92 | #endif | |
93 | ||
79072805 LW |
94 | #ifdef ff_next |
95 | #undef ff_next | |
d48672a2 LW |
96 | #endif |
97 | ||
79072805 | 98 | #include "keywords.h" |
fe14fcc3 | 99 | |
ffb4593c NT |
100 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
101 | ||
ae986130 LW |
102 | #ifdef CLINE |
103 | #undef CLINE | |
104 | #endif | |
57843af0 | 105 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 106 | |
ffb4593c NT |
107 | /* |
108 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 109 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
110 | * |
111 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
112 | * OPERATOR : generic operator | |
113 | * AOPERATOR : assignment operator | |
114 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
115 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
116 | * PREREF : *EXPR where EXPR is not a simple identifier | |
117 | * TERM : expression term | |
118 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
119 | * FTST : file test operator | |
120 | * FUN0 : zero-argument function | |
2d2e263d | 121 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
122 | * BOop : bitwise or or xor |
123 | * BAop : bitwise and | |
124 | * SHop : shift operator | |
125 | * PWop : power operator | |
9cbb5ea2 | 126 | * PMop : pattern-matching operator |
ffb4593c NT |
127 | * Aop : addition-level operator |
128 | * Mop : multiplication-level operator | |
129 | * Eop : equality-testing operator | |
e5edeb50 | 130 | * Rop : relational operator <= != gt |
ffb4593c NT |
131 | * |
132 | * Also see LOP and lop() below. | |
133 | */ | |
134 | ||
998054bd | 135 | #ifdef DEBUGGING /* Serve -DT. */ |
bbf60fe6 | 136 | # define REPORT(retval) tokereport(s,(int)retval) |
998054bd | 137 | #else |
bbf60fe6 | 138 | # define REPORT(retval) (retval) |
998054bd SC |
139 | #endif |
140 | ||
bbf60fe6 DM |
141 | #define TOKEN(retval) return ( PL_bufptr = s, REPORT(retval)) |
142 | #define OPERATOR(retval) return (PL_expect = XTERM, PL_bufptr = s, REPORT(retval)) | |
143 | #define AOPERATOR(retval) return ao((PL_expect = XTERM, PL_bufptr = s, REPORT(retval))) | |
144 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s, REPORT(retval)) | |
145 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s, REPORT(retval)) | |
146 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s, REPORT(retval)) | |
147 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR, PL_bufptr = s, REPORT(retval)) | |
148 | #define LOOPX(f) return (yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)LOOPEX)) | |
149 | #define FTST(f) return (yylval.ival=f, PL_expect=XTERMORDORDOR, PL_bufptr=s, REPORT((int)UNIOP)) | |
150 | #define FUN0(f) return (yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC0)) | |
151 | #define FUN1(f) return (yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC1)) | |
152 | #define BOop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITOROP))) | |
153 | #define BAop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITANDOP))) | |
154 | #define SHop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)SHIFTOP))) | |
155 | #define PWop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)POWOP))) | |
156 | #define PMop(f) return(yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MATCHOP)) | |
157 | #define Aop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)ADDOP))) | |
158 | #define Mop(f) return ao((yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MULOP))) | |
159 | #define Eop(f) return (yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)EQOP)) | |
160 | #define Rop(f) return (yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)RELOP)) | |
2f3197b3 | 161 | |
a687059c LW |
162 | /* This bit of chicanery makes a unary function followed by |
163 | * a parenthesis into a function with one argument, highest precedence. | |
6f33ba73 RGS |
164 | * The UNIDOR macro is for unary functions that can be followed by the // |
165 | * operator (such as C<shift // 0>). | |
a687059c | 166 | */ |
bbf60fe6 DM |
167 | #define UNI2(f,x) return ( \ |
168 | yylval.ival = f, \ | |
6f33ba73 | 169 | PL_expect = x, \ |
3280af22 NIS |
170 | PL_bufptr = s, \ |
171 | PL_last_uni = PL_oldbufptr, \ | |
172 | PL_last_lop_op = f, \ | |
bbf60fe6 DM |
173 | REPORT( \ |
174 | (*s == '(' || (s = skipspace(s), *s == '(') \ | |
175 | ? (int)FUNC1 : (int)UNIOP))) | |
6f33ba73 RGS |
176 | #define UNI(f) UNI2(f,XTERM) |
177 | #define UNIDOR(f) UNI2(f,XTERMORDORDOR) | |
a687059c | 178 | |
bbf60fe6 DM |
179 | #define UNIBRACK(f) return ( \ |
180 | yylval.ival = f, \ | |
3280af22 NIS |
181 | PL_bufptr = s, \ |
182 | PL_last_uni = PL_oldbufptr, \ | |
bbf60fe6 DM |
183 | REPORT( \ |
184 | (*s == '(' || (s = skipspace(s), *s == '(') \ | |
185 | ? (int)FUNC1 : (int)UNIOP))) | |
79072805 | 186 | |
9f68db38 | 187 | /* grandfather return to old style */ |
3280af22 | 188 | #define OLDLOP(f) return(yylval.ival=f,PL_expect = XTERM,PL_bufptr = s,(int)LSTOP) |
79072805 | 189 | |
8fa7f367 JH |
190 | #ifdef DEBUGGING |
191 | ||
bbf60fe6 DM |
192 | /* how to interpret the yylval associated with the token */ |
193 | enum token_type { | |
194 | TOKENTYPE_NONE, | |
195 | TOKENTYPE_IVAL, | |
196 | TOKENTYPE_OPNUM, /* yylval.ival contains an opcode number */ | |
197 | TOKENTYPE_PVAL, | |
198 | TOKENTYPE_OPVAL, | |
199 | TOKENTYPE_GVVAL | |
200 | }; | |
201 | ||
202 | static struct debug_tokens { int token, type; char *name;} debug_tokens[] = | |
9041c2e3 | 203 | { |
bbf60fe6 DM |
204 | { ADDOP, TOKENTYPE_OPNUM, "ADDOP" }, |
205 | { ANDAND, TOKENTYPE_NONE, "ANDAND" }, | |
206 | { ANDOP, TOKENTYPE_NONE, "ANDOP" }, | |
207 | { ANONSUB, TOKENTYPE_IVAL, "ANONSUB" }, | |
208 | { ARROW, TOKENTYPE_NONE, "ARROW" }, | |
209 | { ASSIGNOP, TOKENTYPE_OPNUM, "ASSIGNOP" }, | |
210 | { BITANDOP, TOKENTYPE_OPNUM, "BITANDOP" }, | |
211 | { BITOROP, TOKENTYPE_OPNUM, "BITOROP" }, | |
212 | { COLONATTR, TOKENTYPE_NONE, "COLONATTR" }, | |
213 | { CONTINUE, TOKENTYPE_NONE, "CONTINUE" }, | |
214 | { DO, TOKENTYPE_NONE, "DO" }, | |
215 | { DOLSHARP, TOKENTYPE_NONE, "DOLSHARP" }, | |
216 | { DORDOR, TOKENTYPE_NONE, "DORDOR" }, | |
217 | { DOROP, TOKENTYPE_OPNUM, "DOROP" }, | |
218 | { DOTDOT, TOKENTYPE_IVAL, "DOTDOT" }, | |
219 | { ELSE, TOKENTYPE_NONE, "ELSE" }, | |
220 | { ELSIF, TOKENTYPE_IVAL, "ELSIF" }, | |
221 | { EQOP, TOKENTYPE_OPNUM, "EQOP" }, | |
222 | { FOR, TOKENTYPE_IVAL, "FOR" }, | |
223 | { FORMAT, TOKENTYPE_NONE, "FORMAT" }, | |
224 | { FUNC, TOKENTYPE_OPNUM, "FUNC" }, | |
225 | { FUNC0, TOKENTYPE_OPNUM, "FUNC0" }, | |
226 | { FUNC0SUB, TOKENTYPE_OPVAL, "FUNC0SUB" }, | |
227 | { FUNC1, TOKENTYPE_OPNUM, "FUNC1" }, | |
228 | { FUNCMETH, TOKENTYPE_OPVAL, "FUNCMETH" }, | |
229 | { HASHBRACK, TOKENTYPE_NONE, "HASHBRACK" }, | |
230 | { IF, TOKENTYPE_IVAL, "IF" }, | |
231 | { LABEL, TOKENTYPE_PVAL, "LABEL" }, | |
232 | { LOCAL, TOKENTYPE_IVAL, "LOCAL" }, | |
233 | { LOOPEX, TOKENTYPE_OPNUM, "LOOPEX" }, | |
234 | { LSTOP, TOKENTYPE_OPNUM, "LSTOP" }, | |
235 | { LSTOPSUB, TOKENTYPE_OPVAL, "LSTOPSUB" }, | |
236 | { MATCHOP, TOKENTYPE_OPNUM, "MATCHOP" }, | |
237 | { METHOD, TOKENTYPE_OPVAL, "METHOD" }, | |
238 | { MULOP, TOKENTYPE_OPNUM, "MULOP" }, | |
239 | { MY, TOKENTYPE_IVAL, "MY" }, | |
240 | { MYSUB, TOKENTYPE_NONE, "MYSUB" }, | |
241 | { NOAMP, TOKENTYPE_NONE, "NOAMP" }, | |
242 | { NOTOP, TOKENTYPE_NONE, "NOTOP" }, | |
243 | { OROP, TOKENTYPE_IVAL, "OROP" }, | |
244 | { OROR, TOKENTYPE_NONE, "OROR" }, | |
245 | { PACKAGE, TOKENTYPE_NONE, "PACKAGE" }, | |
246 | { PMFUNC, TOKENTYPE_OPVAL, "PMFUNC" }, | |
247 | { POSTDEC, TOKENTYPE_NONE, "POSTDEC" }, | |
248 | { POSTINC, TOKENTYPE_NONE, "POSTINC" }, | |
249 | { POWOP, TOKENTYPE_OPNUM, "POWOP" }, | |
250 | { PREDEC, TOKENTYPE_NONE, "PREDEC" }, | |
251 | { PREINC, TOKENTYPE_NONE, "PREINC" }, | |
252 | { PRIVATEREF, TOKENTYPE_OPVAL, "PRIVATEREF" }, | |
253 | { REFGEN, TOKENTYPE_NONE, "REFGEN" }, | |
254 | { RELOP, TOKENTYPE_OPNUM, "RELOP" }, | |
255 | { SHIFTOP, TOKENTYPE_OPNUM, "SHIFTOP" }, | |
256 | { SUB, TOKENTYPE_NONE, "SUB" }, | |
257 | { THING, TOKENTYPE_OPVAL, "THING" }, | |
258 | { UMINUS, TOKENTYPE_NONE, "UMINUS" }, | |
259 | { UNIOP, TOKENTYPE_OPNUM, "UNIOP" }, | |
260 | { UNIOPSUB, TOKENTYPE_OPVAL, "UNIOPSUB" }, | |
261 | { UNLESS, TOKENTYPE_IVAL, "UNLESS" }, | |
262 | { UNTIL, TOKENTYPE_IVAL, "UNTIL" }, | |
263 | { USE, TOKENTYPE_IVAL, "USE" }, | |
264 | { WHILE, TOKENTYPE_IVAL, "WHILE" }, | |
265 | { WORD, TOKENTYPE_OPVAL, "WORD" }, | |
266 | { 0, TOKENTYPE_NONE, 0 } | |
267 | }; | |
268 | ||
269 | /* dump the returned token in rv, plus any optional arg in yylval */ | |
998054bd | 270 | |
bbf60fe6 DM |
271 | STATIC int |
272 | S_tokereport(pTHX_ char* s, I32 rv) | |
273 | { | |
274 | if (DEBUG_T_TEST) { | |
275 | char *name = Nullch; | |
276 | enum token_type type = TOKENTYPE_NONE; | |
277 | struct debug_tokens *p; | |
278 | SV* report = NEWSV(0, 60); | |
279 | ||
280 | Perl_sv_catpvf(aTHX_ report, "<== "); | |
281 | ||
282 | for (p = debug_tokens; p->token; p++) { | |
283 | if (p->token == (int)rv) { | |
284 | name = p->name; | |
285 | type = p->type; | |
286 | break; | |
287 | } | |
288 | } | |
289 | if (name) | |
290 | Perl_sv_catpvf(aTHX_ report, "%s", name); | |
291 | else if ((char)rv > ' ' && (char)rv < '~') | |
292 | Perl_sv_catpvf(aTHX_ report, "'%c'", (char)rv); | |
293 | else if (!rv) | |
294 | Perl_sv_catpvf(aTHX_ report, "EOF"); | |
295 | else | |
296 | Perl_sv_catpvf(aTHX_ report, "?? %"IVdf, (IV)rv); | |
297 | switch (type) { | |
298 | case TOKENTYPE_NONE: | |
299 | case TOKENTYPE_GVVAL: /* doesn't appear to be used */ | |
300 | break; | |
301 | case TOKENTYPE_IVAL: | |
302 | Perl_sv_catpvf(aTHX_ report, "(ival=%"IVdf")", yylval.ival); | |
303 | break; | |
304 | case TOKENTYPE_OPNUM: | |
305 | Perl_sv_catpvf(aTHX_ report, "(ival=op_%s)", | |
306 | PL_op_name[yylval.ival]); | |
307 | break; | |
308 | case TOKENTYPE_PVAL: | |
309 | Perl_sv_catpvf(aTHX_ report, "(pval=\"%s\")", yylval.pval); | |
310 | break; | |
311 | case TOKENTYPE_OPVAL: | |
401441c0 RGS |
312 | if (yylval.opval) |
313 | Perl_sv_catpvf(aTHX_ report, "(opval=op_%s)", | |
bbf60fe6 | 314 | PL_op_name[yylval.opval->op_type]); |
401441c0 RGS |
315 | else |
316 | Perl_sv_catpv(aTHX_ report, "(opval=null)"); | |
bbf60fe6 DM |
317 | break; |
318 | } | |
319 | Perl_sv_catpvf(aTHX_ report, " at line %d [", CopLINE(PL_curcop)); | |
998054bd SC |
320 | if (s - PL_bufptr > 0) |
321 | sv_catpvn(report, PL_bufptr, s - PL_bufptr); | |
322 | else { | |
323 | if (PL_oldbufptr && *PL_oldbufptr) | |
324 | sv_catpv(report, PL_tokenbuf); | |
325 | } | |
bbf60fe6 DM |
326 | PerlIO_printf(Perl_debug_log, "### %s]\n", SvPV_nolen(report)); |
327 | }; | |
328 | return (int)rv; | |
998054bd SC |
329 | } |
330 | ||
8fa7f367 JH |
331 | #endif |
332 | ||
ffb4593c NT |
333 | /* |
334 | * S_ao | |
335 | * | |
c963b151 BD |
336 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
337 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
338 | */ |
339 | ||
76e3520e | 340 | STATIC int |
cea2e8a9 | 341 | S_ao(pTHX_ int toketype) |
a0d0e21e | 342 | { |
3280af22 NIS |
343 | if (*PL_bufptr == '=') { |
344 | PL_bufptr++; | |
a0d0e21e LW |
345 | if (toketype == ANDAND) |
346 | yylval.ival = OP_ANDASSIGN; | |
347 | else if (toketype == OROR) | |
348 | yylval.ival = OP_ORASSIGN; | |
c963b151 BD |
349 | else if (toketype == DORDOR) |
350 | yylval.ival = OP_DORASSIGN; | |
a0d0e21e LW |
351 | toketype = ASSIGNOP; |
352 | } | |
353 | return toketype; | |
354 | } | |
355 | ||
ffb4593c NT |
356 | /* |
357 | * S_no_op | |
358 | * When Perl expects an operator and finds something else, no_op | |
359 | * prints the warning. It always prints "<something> found where | |
360 | * operator expected. It prints "Missing semicolon on previous line?" | |
361 | * if the surprise occurs at the start of the line. "do you need to | |
362 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
363 | * where the compiler doesn't know if foo is a method call or a function. | |
364 | * It prints "Missing operator before end of line" if there's nothing | |
365 | * after the missing operator, or "... before <...>" if there is something | |
366 | * after the missing operator. | |
367 | */ | |
368 | ||
76e3520e | 369 | STATIC void |
cea2e8a9 | 370 | S_no_op(pTHX_ char *what, char *s) |
463ee0b2 | 371 | { |
3280af22 NIS |
372 | char *oldbp = PL_bufptr; |
373 | bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 374 | |
1189a94a GS |
375 | if (!s) |
376 | s = oldbp; | |
07c798fb | 377 | else |
1189a94a | 378 | PL_bufptr = s; |
cea2e8a9 | 379 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what)); |
56da5a46 RGS |
380 | if (ckWARN_d(WARN_SYNTAX)) { |
381 | if (is_first) | |
382 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
383 | "\t(Missing semicolon on previous line?)\n"); | |
384 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { | |
385 | char *t; | |
386 | for (t = PL_oldoldbufptr; *t && (isALNUM_lazy_if(t,UTF) || *t == ':'); t++) ; | |
387 | if (t < PL_bufptr && isSPACE(*t)) | |
388 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
389 | "\t(Do you need to predeclare %.*s?)\n", | |
390 | t - PL_oldoldbufptr, PL_oldoldbufptr); | |
391 | } | |
392 | else { | |
393 | assert(s >= oldbp); | |
394 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
395 | "\t(Missing operator before %.*s?)\n", s - oldbp, oldbp); | |
396 | } | |
07c798fb | 397 | } |
3280af22 | 398 | PL_bufptr = oldbp; |
8990e307 LW |
399 | } |
400 | ||
ffb4593c NT |
401 | /* |
402 | * S_missingterm | |
403 | * Complain about missing quote/regexp/heredoc terminator. | |
404 | * If it's called with (char *)NULL then it cauterizes the line buffer. | |
405 | * If we're in a delimited string and the delimiter is a control | |
406 | * character, it's reformatted into a two-char sequence like ^C. | |
407 | * This is fatal. | |
408 | */ | |
409 | ||
76e3520e | 410 | STATIC void |
cea2e8a9 | 411 | S_missingterm(pTHX_ char *s) |
8990e307 LW |
412 | { |
413 | char tmpbuf[3]; | |
414 | char q; | |
415 | if (s) { | |
416 | char *nl = strrchr(s,'\n'); | |
d2719217 | 417 | if (nl) |
8990e307 LW |
418 | *nl = '\0'; |
419 | } | |
9d116dd7 JH |
420 | else if ( |
421 | #ifdef EBCDIC | |
422 | iscntrl(PL_multi_close) | |
423 | #else | |
424 | PL_multi_close < 32 || PL_multi_close == 127 | |
425 | #endif | |
426 | ) { | |
8990e307 | 427 | *tmpbuf = '^'; |
3280af22 | 428 | tmpbuf[1] = toCTRL(PL_multi_close); |
8990e307 LW |
429 | s = "\\n"; |
430 | tmpbuf[2] = '\0'; | |
431 | s = tmpbuf; | |
432 | } | |
433 | else { | |
eb160463 | 434 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
435 | tmpbuf[1] = '\0'; |
436 | s = tmpbuf; | |
437 | } | |
438 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 439 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 440 | } |
79072805 | 441 | |
ffb4593c NT |
442 | /* |
443 | * Perl_deprecate | |
ffb4593c NT |
444 | */ |
445 | ||
79072805 | 446 | void |
864dbfa3 | 447 | Perl_deprecate(pTHX_ char *s) |
a0d0e21e | 448 | { |
599cee73 | 449 | if (ckWARN(WARN_DEPRECATED)) |
9014280d | 450 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), "Use of %s is deprecated", s); |
a0d0e21e LW |
451 | } |
452 | ||
12bcd1a6 PM |
453 | void |
454 | Perl_deprecate_old(pTHX_ char *s) | |
455 | { | |
456 | /* This function should NOT be called for any new deprecated warnings */ | |
457 | /* Use Perl_deprecate instead */ | |
458 | /* */ | |
459 | /* It is here to maintain backward compatibility with the pre-5.8 */ | |
460 | /* warnings category hierarchy. The "deprecated" category used to */ | |
461 | /* live under the "syntax" category. It is now a top-level category */ | |
462 | /* in its own right. */ | |
463 | ||
464 | if (ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)) | |
465 | Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX), | |
466 | "Use of %s is deprecated", s); | |
467 | } | |
468 | ||
ffb4593c NT |
469 | /* |
470 | * depcom | |
9cbb5ea2 | 471 | * Deprecate a comma-less variable list. |
ffb4593c NT |
472 | */ |
473 | ||
76e3520e | 474 | STATIC void |
cea2e8a9 | 475 | S_depcom(pTHX) |
a0d0e21e | 476 | { |
12bcd1a6 | 477 | deprecate_old("comma-less variable list"); |
a0d0e21e LW |
478 | } |
479 | ||
ffb4593c | 480 | /* |
9cbb5ea2 GS |
481 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
482 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
483 | */ |
484 | ||
c39cd008 GS |
485 | #ifdef PERL_CR_FILTER |
486 | static void | |
487 | strip_return(SV *sv) | |
488 | { | |
489 | register char *s = SvPVX(sv); | |
490 | register char *e = s + SvCUR(sv); | |
491 | /* outer loop optimized to do nothing if there are no CR-LFs */ | |
492 | while (s < e) { | |
493 | if (*s++ == '\r' && *s == '\n') { | |
494 | /* hit a CR-LF, need to copy the rest */ | |
495 | register char *d = s - 1; | |
496 | *d++ = *s++; | |
497 | while (s < e) { | |
498 | if (*s == '\r' && s[1] == '\n') | |
499 | s++; | |
500 | *d++ = *s++; | |
501 | } | |
502 | SvCUR(sv) -= s - d; | |
503 | return; | |
504 | } | |
505 | } | |
506 | } | |
a868473f | 507 | |
76e3520e | 508 | STATIC I32 |
c39cd008 | 509 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 510 | { |
c39cd008 GS |
511 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
512 | if (count > 0 && !maxlen) | |
513 | strip_return(sv); | |
514 | return count; | |
a868473f NIS |
515 | } |
516 | #endif | |
517 | ||
ffb4593c NT |
518 | /* |
519 | * Perl_lex_start | |
9cbb5ea2 GS |
520 | * Initialize variables. Uses the Perl save_stack to save its state (for |
521 | * recursive calls to the parser). | |
ffb4593c NT |
522 | */ |
523 | ||
a0d0e21e | 524 | void |
864dbfa3 | 525 | Perl_lex_start(pTHX_ SV *line) |
79072805 | 526 | { |
8990e307 LW |
527 | char *s; |
528 | STRLEN len; | |
529 | ||
3280af22 NIS |
530 | SAVEI32(PL_lex_dojoin); |
531 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
532 | SAVEI32(PL_lex_casemods); |
533 | SAVEI32(PL_lex_starts); | |
534 | SAVEI32(PL_lex_state); | |
7766f137 | 535 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 536 | SAVEI32(PL_lex_inwhat); |
18b09519 GS |
537 | if (PL_lex_state == LEX_KNOWNEXT) { |
538 | I32 toke = PL_nexttoke; | |
539 | while (--toke >= 0) { | |
540 | SAVEI32(PL_nexttype[toke]); | |
541 | SAVEVPTR(PL_nextval[toke]); | |
542 | } | |
543 | SAVEI32(PL_nexttoke); | |
18b09519 | 544 | } |
57843af0 | 545 | SAVECOPLINE(PL_curcop); |
3280af22 NIS |
546 | SAVEPPTR(PL_bufptr); |
547 | SAVEPPTR(PL_bufend); | |
548 | SAVEPPTR(PL_oldbufptr); | |
549 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
550 | SAVEPPTR(PL_last_lop); |
551 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
552 | SAVEPPTR(PL_linestart); |
553 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
554 | SAVEGENERICPV(PL_lex_brackstack); |
555 | SAVEGENERICPV(PL_lex_casestack); | |
c76ac1ee | 556 | SAVEDESTRUCTOR_X(restore_rsfp, PL_rsfp); |
3280af22 NIS |
557 | SAVESPTR(PL_lex_stuff); |
558 | SAVEI32(PL_lex_defer); | |
09bef843 | 559 | SAVEI32(PL_sublex_info.sub_inwhat); |
3280af22 | 560 | SAVESPTR(PL_lex_repl); |
bebdddfc GS |
561 | SAVEINT(PL_expect); |
562 | SAVEINT(PL_lex_expect); | |
3280af22 NIS |
563 | |
564 | PL_lex_state = LEX_NORMAL; | |
565 | PL_lex_defer = 0; | |
566 | PL_expect = XSTATE; | |
567 | PL_lex_brackets = 0; | |
3280af22 NIS |
568 | New(899, PL_lex_brackstack, 120, char); |
569 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
570 | PL_lex_casemods = 0; |
571 | *PL_lex_casestack = '\0'; | |
572 | PL_lex_dojoin = 0; | |
573 | PL_lex_starts = 0; | |
574 | PL_lex_stuff = Nullsv; | |
575 | PL_lex_repl = Nullsv; | |
576 | PL_lex_inpat = 0; | |
76be56bc | 577 | PL_nexttoke = 0; |
3280af22 | 578 | PL_lex_inwhat = 0; |
09bef843 | 579 | PL_sublex_info.sub_inwhat = 0; |
3280af22 NIS |
580 | PL_linestr = line; |
581 | if (SvREADONLY(PL_linestr)) | |
582 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
583 | s = SvPV(PL_linestr, len); | |
6f27f9a7 | 584 | if (!len || s[len-1] != ';') { |
3280af22 NIS |
585 | if (!(SvFLAGS(PL_linestr) & SVs_TEMP)) |
586 | PL_linestr = sv_2mortal(newSVsv(PL_linestr)); | |
587 | sv_catpvn(PL_linestr, "\n;", 2); | |
8990e307 | 588 | } |
3280af22 NIS |
589 | SvTEMP_off(PL_linestr); |
590 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
591 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 592 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 593 | PL_rsfp = 0; |
79072805 | 594 | } |
a687059c | 595 | |
ffb4593c NT |
596 | /* |
597 | * Perl_lex_end | |
9cbb5ea2 GS |
598 | * Finalizer for lexing operations. Must be called when the parser is |
599 | * done with the lexer. | |
ffb4593c NT |
600 | */ |
601 | ||
463ee0b2 | 602 | void |
864dbfa3 | 603 | Perl_lex_end(pTHX) |
463ee0b2 | 604 | { |
3280af22 | 605 | PL_doextract = FALSE; |
463ee0b2 LW |
606 | } |
607 | ||
ffb4593c NT |
608 | /* |
609 | * S_incline | |
610 | * This subroutine has nothing to do with tilting, whether at windmills | |
611 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 612 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 613 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
614 | * # line 500 "foo.pm" |
615 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
616 | */ |
617 | ||
76e3520e | 618 | STATIC void |
cea2e8a9 | 619 | S_incline(pTHX_ char *s) |
463ee0b2 LW |
620 | { |
621 | char *t; | |
622 | char *n; | |
73659bf1 | 623 | char *e; |
463ee0b2 | 624 | char ch; |
463ee0b2 | 625 | |
57843af0 | 626 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
627 | if (*s++ != '#') |
628 | return; | |
bf4acbe4 | 629 | while (SPACE_OR_TAB(*s)) s++; |
73659bf1 GS |
630 | if (strnEQ(s, "line", 4)) |
631 | s += 4; | |
632 | else | |
633 | return; | |
084592ab | 634 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 635 | s++; |
4e553d73 | 636 | else |
73659bf1 | 637 | return; |
bf4acbe4 | 638 | while (SPACE_OR_TAB(*s)) s++; |
463ee0b2 LW |
639 | if (!isDIGIT(*s)) |
640 | return; | |
641 | n = s; | |
642 | while (isDIGIT(*s)) | |
643 | s++; | |
bf4acbe4 | 644 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 645 | s++; |
73659bf1 | 646 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 647 | s++; |
73659bf1 GS |
648 | e = t + 1; |
649 | } | |
463ee0b2 | 650 | else { |
463ee0b2 | 651 | for (t = s; !isSPACE(*t); t++) ; |
73659bf1 | 652 | e = t; |
463ee0b2 | 653 | } |
bf4acbe4 | 654 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
655 | e++; |
656 | if (*e != '\n' && *e != '\0') | |
657 | return; /* false alarm */ | |
658 | ||
463ee0b2 LW |
659 | ch = *t; |
660 | *t = '\0'; | |
f4dd75d9 | 661 | if (t - s > 0) { |
05ec9bb3 | 662 | CopFILE_free(PL_curcop); |
57843af0 | 663 | CopFILE_set(PL_curcop, s); |
f4dd75d9 | 664 | } |
463ee0b2 | 665 | *t = ch; |
57843af0 | 666 | CopLINE_set(PL_curcop, atoi(n)-1); |
463ee0b2 LW |
667 | } |
668 | ||
ffb4593c NT |
669 | /* |
670 | * S_skipspace | |
671 | * Called to gobble the appropriate amount and type of whitespace. | |
672 | * Skips comments as well. | |
673 | */ | |
674 | ||
76e3520e | 675 | STATIC char * |
cea2e8a9 | 676 | S_skipspace(pTHX_ register char *s) |
a687059c | 677 | { |
3280af22 | 678 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 679 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 LW |
680 | s++; |
681 | return s; | |
682 | } | |
683 | for (;;) { | |
fd049845 | 684 | STRLEN prevlen; |
09bef843 | 685 | SSize_t oldprevlen, oldoldprevlen; |
9c5ffd7c | 686 | SSize_t oldloplen = 0, oldunilen = 0; |
60e6418e GS |
687 | while (s < PL_bufend && isSPACE(*s)) { |
688 | if (*s++ == '\n' && PL_in_eval && !PL_rsfp) | |
689 | incline(s); | |
690 | } | |
ffb4593c NT |
691 | |
692 | /* comment */ | |
3280af22 NIS |
693 | if (s < PL_bufend && *s == '#') { |
694 | while (s < PL_bufend && *s != '\n') | |
463ee0b2 | 695 | s++; |
60e6418e | 696 | if (s < PL_bufend) { |
463ee0b2 | 697 | s++; |
60e6418e GS |
698 | if (PL_in_eval && !PL_rsfp) { |
699 | incline(s); | |
700 | continue; | |
701 | } | |
702 | } | |
463ee0b2 | 703 | } |
ffb4593c NT |
704 | |
705 | /* only continue to recharge the buffer if we're at the end | |
706 | * of the buffer, we're not reading from a source filter, and | |
707 | * we're in normal lexing mode | |
708 | */ | |
09bef843 SB |
709 | if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat || |
710 | PL_lex_state == LEX_FORMLINE) | |
463ee0b2 | 711 | return s; |
ffb4593c NT |
712 | |
713 | /* try to recharge the buffer */ | |
9cbb5ea2 GS |
714 | if ((s = filter_gets(PL_linestr, PL_rsfp, |
715 | (prevlen = SvCUR(PL_linestr)))) == Nullch) | |
716 | { | |
717 | /* end of file. Add on the -p or -n magic */ | |
01a19ab0 NC |
718 | if (PL_minus_p) { |
719 | sv_setpv(PL_linestr, | |
720 | ";}continue{print or die qq(-p destination: $!\\n);}"); | |
3280af22 | 721 | PL_minus_n = PL_minus_p = 0; |
a0d0e21e | 722 | } |
01a19ab0 NC |
723 | else if (PL_minus_n) { |
724 | sv_setpvn(PL_linestr, ";}", 2); | |
725 | PL_minus_n = 0; | |
726 | } | |
a0d0e21e | 727 | else |
4147a61b | 728 | sv_setpvn(PL_linestr,";", 1); |
ffb4593c NT |
729 | |
730 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
731 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
732 | = SvPVX(PL_linestr); | |
3280af22 | 733 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 734 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
735 | |
736 | /* Close the filehandle. Could be from -P preprocessor, | |
737 | * STDIN, or a regular file. If we were reading code from | |
738 | * STDIN (because the commandline held no -e or filename) | |
739 | * then we don't close it, we reset it so the code can | |
740 | * read from STDIN too. | |
741 | */ | |
742 | ||
3280af22 NIS |
743 | if (PL_preprocess && !PL_in_eval) |
744 | (void)PerlProc_pclose(PL_rsfp); | |
745 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
746 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 747 | else |
3280af22 NIS |
748 | (void)PerlIO_close(PL_rsfp); |
749 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
750 | return s; |
751 | } | |
ffb4593c NT |
752 | |
753 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
754 | /* make corresponding updates to old pointers, for yyerror() */ |
755 | oldprevlen = PL_oldbufptr - PL_bufend; | |
756 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
757 | if (PL_last_uni) | |
758 | oldunilen = PL_last_uni - PL_bufend; | |
759 | if (PL_last_lop) | |
760 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
761 | PL_linestart = PL_bufptr = s + prevlen; |
762 | PL_bufend = s + SvCUR(PL_linestr); | |
763 | s = PL_bufptr; | |
09bef843 SB |
764 | PL_oldbufptr = s + oldprevlen; |
765 | PL_oldoldbufptr = s + oldoldprevlen; | |
766 | if (PL_last_uni) | |
767 | PL_last_uni = s + oldunilen; | |
768 | if (PL_last_lop) | |
769 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 770 | incline(s); |
ffb4593c NT |
771 | |
772 | /* debugger active and we're not compiling the debugger code, | |
773 | * so store the line into the debugger's array of lines | |
774 | */ | |
3280af22 | 775 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
776 | SV *sv = NEWSV(85,0); |
777 | ||
778 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 779 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
780 | (void)SvIOK_on(sv); |
781 | SvIVX(sv) = 0; | |
57843af0 | 782 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 783 | } |
463ee0b2 | 784 | } |
a687059c | 785 | } |
378cc40b | 786 | |
ffb4593c NT |
787 | /* |
788 | * S_check_uni | |
789 | * Check the unary operators to ensure there's no ambiguity in how they're | |
790 | * used. An ambiguous piece of code would be: | |
791 | * rand + 5 | |
792 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
793 | * the +5 is its argument. | |
794 | */ | |
795 | ||
76e3520e | 796 | STATIC void |
cea2e8a9 | 797 | S_check_uni(pTHX) |
ba106d47 | 798 | { |
2f3197b3 | 799 | char *s; |
a0d0e21e | 800 | char *t; |
2f3197b3 | 801 | |
3280af22 | 802 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 803 | return; |
3280af22 NIS |
804 | while (isSPACE(*PL_last_uni)) |
805 | PL_last_uni++; | |
7e2040f0 | 806 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 807 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 808 | return; |
0453d815 | 809 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 810 | char ch = *s; |
0453d815 | 811 | *s = '\0'; |
9014280d | 812 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
2d5ccbba | 813 | "Warning: Use of \"%s\" without parentheses is ambiguous", |
0453d815 PM |
814 | PL_last_uni); |
815 | *s = ch; | |
816 | } | |
2f3197b3 LW |
817 | } |
818 | ||
ffb4593c NT |
819 | /* |
820 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
821 | * with a subroutine, S_lop() for which LOP is just another name. | |
822 | */ | |
823 | ||
a0d0e21e LW |
824 | #define LOP(f,x) return lop(f,x,s) |
825 | ||
ffb4593c NT |
826 | /* |
827 | * S_lop | |
828 | * Build a list operator (or something that might be one). The rules: | |
829 | * - if we have a next token, then it's a list operator [why?] | |
830 | * - if the next thing is an opening paren, then it's a function | |
831 | * - else it's a list operator | |
832 | */ | |
833 | ||
76e3520e | 834 | STATIC I32 |
a0be28da | 835 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 836 | { |
79072805 | 837 | yylval.ival = f; |
35c8bce7 | 838 | CLINE; |
3280af22 NIS |
839 | PL_expect = x; |
840 | PL_bufptr = s; | |
841 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 842 | PL_last_lop_op = (OPCODE)f; |
3280af22 | 843 | if (PL_nexttoke) |
bbf60fe6 | 844 | return REPORT(LSTOP); |
79072805 | 845 | if (*s == '(') |
bbf60fe6 | 846 | return REPORT(FUNC); |
79072805 LW |
847 | s = skipspace(s); |
848 | if (*s == '(') | |
bbf60fe6 | 849 | return REPORT(FUNC); |
79072805 | 850 | else |
bbf60fe6 | 851 | return REPORT(LSTOP); |
79072805 LW |
852 | } |
853 | ||
ffb4593c NT |
854 | /* |
855 | * S_force_next | |
9cbb5ea2 | 856 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 857 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
858 | * to know what token to return the next time the lexer is called. Caller |
859 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
860 | * handles the token correctly. | |
ffb4593c NT |
861 | */ |
862 | ||
4e553d73 | 863 | STATIC void |
cea2e8a9 | 864 | S_force_next(pTHX_ I32 type) |
79072805 | 865 | { |
3280af22 NIS |
866 | PL_nexttype[PL_nexttoke] = type; |
867 | PL_nexttoke++; | |
868 | if (PL_lex_state != LEX_KNOWNEXT) { | |
869 | PL_lex_defer = PL_lex_state; | |
870 | PL_lex_expect = PL_expect; | |
871 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
872 | } |
873 | } | |
874 | ||
ffb4593c NT |
875 | /* |
876 | * S_force_word | |
877 | * When the lexer knows the next thing is a word (for instance, it has | |
878 | * just seen -> and it knows that the next char is a word char, then | |
879 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
880 | * | |
881 | * Arguments: | |
b1b65b59 | 882 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
883 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
884 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
885 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
886 | * int allow_pack : if true, : characters will also be allowed (require, | |
887 | * use, etc. do this) | |
9cbb5ea2 | 888 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
889 | */ |
890 | ||
76e3520e | 891 | STATIC char * |
cea2e8a9 | 892 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 893 | { |
463ee0b2 LW |
894 | register char *s; |
895 | STRLEN len; | |
4e553d73 | 896 | |
463ee0b2 LW |
897 | start = skipspace(start); |
898 | s = start; | |
7e2040f0 | 899 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 900 | (allow_pack && *s == ':') || |
15f0808c | 901 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 902 | { |
3280af22 NIS |
903 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
904 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
905 | return start; |
906 | if (token == METHOD) { | |
907 | s = skipspace(s); | |
908 | if (*s == '(') | |
3280af22 | 909 | PL_expect = XTERM; |
463ee0b2 | 910 | else { |
3280af22 | 911 | PL_expect = XOPERATOR; |
463ee0b2 | 912 | } |
79072805 | 913 | } |
3280af22 NIS |
914 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
915 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
5464dbd2 RGS |
916 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
917 | SvUTF8_on(((SVOP*)PL_nextval[PL_nexttoke].opval)->op_sv); | |
79072805 LW |
918 | force_next(token); |
919 | } | |
920 | return s; | |
921 | } | |
922 | ||
ffb4593c NT |
923 | /* |
924 | * S_force_ident | |
9cbb5ea2 | 925 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
926 | * text only contains the "foo" portion. The first argument is a pointer |
927 | * to the "foo", and the second argument is the type symbol to prefix. | |
928 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 929 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
930 | */ |
931 | ||
76e3520e | 932 | STATIC void |
cea2e8a9 | 933 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
934 | { |
935 | if (s && *s) { | |
11343788 | 936 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 937 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 938 | force_next(WORD); |
748a9306 | 939 | if (kind) { |
11343788 | 940 | o->op_private = OPpCONST_ENTERED; |
55497cff | 941 | /* XXX see note in pp_entereval() for why we forgo typo |
942 | warnings if the symbol must be introduced in an eval. | |
943 | GSAR 96-10-12 */ | |
3280af22 | 944 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
945 | kind == '$' ? SVt_PV : |
946 | kind == '@' ? SVt_PVAV : | |
947 | kind == '%' ? SVt_PVHV : | |
948 | SVt_PVGV | |
949 | ); | |
748a9306 | 950 | } |
79072805 LW |
951 | } |
952 | } | |
953 | ||
1571675a GS |
954 | NV |
955 | Perl_str_to_version(pTHX_ SV *sv) | |
956 | { | |
957 | NV retval = 0.0; | |
958 | NV nshift = 1.0; | |
959 | STRLEN len; | |
960 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 961 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
962 | char *end = start + len; |
963 | while (start < end) { | |
ba210ebe | 964 | STRLEN skip; |
1571675a GS |
965 | UV n; |
966 | if (utf) | |
9041c2e3 | 967 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
968 | else { |
969 | n = *(U8*)start; | |
970 | skip = 1; | |
971 | } | |
972 | retval += ((NV)n)/nshift; | |
973 | start += skip; | |
974 | nshift *= 1000; | |
975 | } | |
976 | return retval; | |
977 | } | |
978 | ||
4e553d73 | 979 | /* |
ffb4593c NT |
980 | * S_force_version |
981 | * Forces the next token to be a version number. | |
e759cc13 RGS |
982 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
983 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
984 | * must use an alternative parsing method). | |
ffb4593c NT |
985 | */ |
986 | ||
76e3520e | 987 | STATIC char * |
e759cc13 | 988 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 989 | { |
990 | OP *version = Nullop; | |
44dcb63b | 991 | char *d; |
89bfa8cd | 992 | |
993 | s = skipspace(s); | |
994 | ||
44dcb63b | 995 | d = s; |
dd629d5b | 996 | if (*d == 'v') |
44dcb63b | 997 | d++; |
44dcb63b | 998 | if (isDIGIT(*d)) { |
e759cc13 RGS |
999 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
1000 | d++; | |
9f3d182e | 1001 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 1002 | SV *ver; |
b73d6f50 | 1003 | s = scan_num(s, &yylval); |
89bfa8cd | 1004 | version = yylval.opval; |
dd629d5b GS |
1005 | ver = cSVOPx(version)->op_sv; |
1006 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 1007 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
1008 | SvNVX(ver) = str_to_version(ver); |
1009 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 1010 | } |
89bfa8cd | 1011 | } |
e759cc13 RGS |
1012 | else if (guessing) |
1013 | return s; | |
89bfa8cd | 1014 | } |
1015 | ||
1016 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 1017 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 1018 | force_next(WORD); |
89bfa8cd | 1019 | |
e759cc13 | 1020 | return s; |
89bfa8cd | 1021 | } |
1022 | ||
ffb4593c NT |
1023 | /* |
1024 | * S_tokeq | |
1025 | * Tokenize a quoted string passed in as an SV. It finds the next | |
1026 | * chunk, up to end of string or a backslash. It may make a new | |
1027 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
1028 | * turns \\ into \. | |
1029 | */ | |
1030 | ||
76e3520e | 1031 | STATIC SV * |
cea2e8a9 | 1032 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
1033 | { |
1034 | register char *s; | |
1035 | register char *send; | |
1036 | register char *d; | |
b3ac6de7 IZ |
1037 | STRLEN len = 0; |
1038 | SV *pv = sv; | |
79072805 LW |
1039 | |
1040 | if (!SvLEN(sv)) | |
b3ac6de7 | 1041 | goto finish; |
79072805 | 1042 | |
a0d0e21e | 1043 | s = SvPV_force(sv, len); |
21a311ee | 1044 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 1045 | goto finish; |
463ee0b2 | 1046 | send = s + len; |
79072805 LW |
1047 | while (s < send && *s != '\\') |
1048 | s++; | |
1049 | if (s == send) | |
b3ac6de7 | 1050 | goto finish; |
79072805 | 1051 | d = s; |
be4731d2 | 1052 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 1053 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
1054 | if (SvUTF8(sv)) |
1055 | SvUTF8_on(pv); | |
1056 | } | |
79072805 LW |
1057 | while (s < send) { |
1058 | if (*s == '\\') { | |
a0d0e21e | 1059 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
1060 | s++; /* all that, just for this */ |
1061 | } | |
1062 | *d++ = *s++; | |
1063 | } | |
1064 | *d = '\0'; | |
463ee0b2 | 1065 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 1066 | finish: |
3280af22 | 1067 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 1068 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
1069 | return sv; |
1070 | } | |
1071 | ||
ffb4593c NT |
1072 | /* |
1073 | * Now come three functions related to double-quote context, | |
1074 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
1075 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
1076 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
1077 | * to handle functions and concatenation. | |
1078 | * They assume that whoever calls them will be setting up a fake | |
1079 | * join call, because each subthing puts a ',' after it. This lets | |
1080 | * "lower \luPpEr" | |
1081 | * become | |
1082 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
1083 | * | |
1084 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
1085 | * arguments and join's arguments are created or not). | |
1086 | */ | |
1087 | ||
1088 | /* | |
1089 | * S_sublex_start | |
1090 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
1091 | * | |
1092 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
1093 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
1094 | * | |
1095 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
1096 | * | |
1097 | * Everything else becomes a FUNC. | |
1098 | * | |
1099 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
1100 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
1101 | * call to S_sublex_push(). | |
1102 | */ | |
1103 | ||
76e3520e | 1104 | STATIC I32 |
cea2e8a9 | 1105 | S_sublex_start(pTHX) |
79072805 LW |
1106 | { |
1107 | register I32 op_type = yylval.ival; | |
79072805 LW |
1108 | |
1109 | if (op_type == OP_NULL) { | |
3280af22 NIS |
1110 | yylval.opval = PL_lex_op; |
1111 | PL_lex_op = Nullop; | |
79072805 LW |
1112 | return THING; |
1113 | } | |
1114 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 1115 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
1116 | |
1117 | if (SvTYPE(sv) == SVt_PVIV) { | |
1118 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
1119 | STRLEN len; | |
1120 | char *p; | |
1121 | SV *nsv; | |
1122 | ||
1123 | p = SvPV(sv, len); | |
79cb57f6 | 1124 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
1125 | if (SvUTF8(sv)) |
1126 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
1127 | SvREFCNT_dec(sv); |
1128 | sv = nsv; | |
4e553d73 | 1129 | } |
b3ac6de7 | 1130 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 1131 | PL_lex_stuff = Nullsv; |
6f33ba73 RGS |
1132 | /* Allow <FH> // "foo" */ |
1133 | if (op_type == OP_READLINE) | |
1134 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
1135 | return THING; |
1136 | } | |
1137 | ||
3280af22 NIS |
1138 | PL_sublex_info.super_state = PL_lex_state; |
1139 | PL_sublex_info.sub_inwhat = op_type; | |
1140 | PL_sublex_info.sub_op = PL_lex_op; | |
1141 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1142 | |
3280af22 NIS |
1143 | PL_expect = XTERM; |
1144 | if (PL_lex_op) { | |
1145 | yylval.opval = PL_lex_op; | |
1146 | PL_lex_op = Nullop; | |
55497cff | 1147 | return PMFUNC; |
1148 | } | |
1149 | else | |
1150 | return FUNC; | |
1151 | } | |
1152 | ||
ffb4593c NT |
1153 | /* |
1154 | * S_sublex_push | |
1155 | * Create a new scope to save the lexing state. The scope will be | |
1156 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1157 | * to the uc, lc, etc. found before. | |
1158 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1159 | */ | |
1160 | ||
76e3520e | 1161 | STATIC I32 |
cea2e8a9 | 1162 | S_sublex_push(pTHX) |
55497cff | 1163 | { |
f46d017c | 1164 | ENTER; |
55497cff | 1165 | |
3280af22 NIS |
1166 | PL_lex_state = PL_sublex_info.super_state; |
1167 | SAVEI32(PL_lex_dojoin); | |
1168 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1169 | SAVEI32(PL_lex_casemods); |
1170 | SAVEI32(PL_lex_starts); | |
1171 | SAVEI32(PL_lex_state); | |
7766f137 | 1172 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1173 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1174 | SAVECOPLINE(PL_curcop); |
3280af22 | 1175 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1176 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1177 | SAVEPPTR(PL_oldbufptr); |
1178 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1179 | SAVEPPTR(PL_last_lop); |
1180 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1181 | SAVEPPTR(PL_linestart); |
1182 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
1183 | SAVEGENERICPV(PL_lex_brackstack); |
1184 | SAVEGENERICPV(PL_lex_casestack); | |
3280af22 NIS |
1185 | |
1186 | PL_linestr = PL_lex_stuff; | |
1187 | PL_lex_stuff = Nullsv; | |
1188 | ||
9cbb5ea2 GS |
1189 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1190 | = SvPVX(PL_linestr); | |
3280af22 | 1191 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1192 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1193 | SAVEFREESV(PL_linestr); |
1194 | ||
1195 | PL_lex_dojoin = FALSE; | |
1196 | PL_lex_brackets = 0; | |
3280af22 NIS |
1197 | New(899, PL_lex_brackstack, 120, char); |
1198 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
1199 | PL_lex_casemods = 0; |
1200 | *PL_lex_casestack = '\0'; | |
1201 | PL_lex_starts = 0; | |
1202 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 1203 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
1204 | |
1205 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1206 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1207 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1208 | else |
3280af22 | 1209 | PL_lex_inpat = Nullop; |
79072805 | 1210 | |
55497cff | 1211 | return '('; |
79072805 LW |
1212 | } |
1213 | ||
ffb4593c NT |
1214 | /* |
1215 | * S_sublex_done | |
1216 | * Restores lexer state after a S_sublex_push. | |
1217 | */ | |
1218 | ||
76e3520e | 1219 | STATIC I32 |
cea2e8a9 | 1220 | S_sublex_done(pTHX) |
79072805 | 1221 | { |
3280af22 | 1222 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1223 | SV *sv = newSVpvn("",0); |
1224 | if (SvUTF8(PL_linestr)) | |
1225 | SvUTF8_on(sv); | |
3280af22 | 1226 | PL_expect = XOPERATOR; |
9aa983d2 | 1227 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1228 | return THING; |
1229 | } | |
1230 | ||
3280af22 NIS |
1231 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1232 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1233 | return yylex(); |
79072805 LW |
1234 | } |
1235 | ||
ffb4593c | 1236 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1237 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1238 | PL_linestr = PL_lex_repl; | |
1239 | PL_lex_inpat = 0; | |
1240 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1241 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1242 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1243 | SAVEFREESV(PL_linestr); |
1244 | PL_lex_dojoin = FALSE; | |
1245 | PL_lex_brackets = 0; | |
3280af22 NIS |
1246 | PL_lex_casemods = 0; |
1247 | *PL_lex_casestack = '\0'; | |
1248 | PL_lex_starts = 0; | |
25da4f38 | 1249 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1250 | PL_lex_state = LEX_INTERPNORMAL; |
1251 | PL_lex_starts++; | |
e9fa98b2 HS |
1252 | /* we don't clear PL_lex_repl here, so that we can check later |
1253 | whether this is an evalled subst; that means we rely on the | |
1254 | logic to ensure sublex_done() is called again only via the | |
1255 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1256 | } |
e9fa98b2 | 1257 | else { |
3280af22 | 1258 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1259 | PL_lex_repl = Nullsv; |
1260 | } | |
79072805 | 1261 | return ','; |
ffed7fef LW |
1262 | } |
1263 | else { | |
f46d017c | 1264 | LEAVE; |
3280af22 NIS |
1265 | PL_bufend = SvPVX(PL_linestr); |
1266 | PL_bufend += SvCUR(PL_linestr); | |
1267 | PL_expect = XOPERATOR; | |
09bef843 | 1268 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1269 | return ')'; |
ffed7fef LW |
1270 | } |
1271 | } | |
1272 | ||
02aa26ce NT |
1273 | /* |
1274 | scan_const | |
1275 | ||
1276 | Extracts a pattern, double-quoted string, or transliteration. This | |
1277 | is terrifying code. | |
1278 | ||
3280af22 NIS |
1279 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1280 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1281 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1282 | ||
9b599b2a GS |
1283 | Returns a pointer to the character scanned up to. Iff this is |
1284 | advanced from the start pointer supplied (ie if anything was | |
1285 | successfully parsed), will leave an OP for the substring scanned | |
1286 | in yylval. Caller must intuit reason for not parsing further | |
1287 | by looking at the next characters herself. | |
1288 | ||
02aa26ce NT |
1289 | In patterns: |
1290 | backslashes: | |
1291 | double-quoted style: \r and \n | |
1292 | regexp special ones: \D \s | |
1293 | constants: \x3 | |
1294 | backrefs: \1 (deprecated in substitution replacements) | |
1295 | case and quoting: \U \Q \E | |
1296 | stops on @ and $, but not for $ as tail anchor | |
1297 | ||
1298 | In transliterations: | |
1299 | characters are VERY literal, except for - not at the start or end | |
1300 | of the string, which indicates a range. scan_const expands the | |
1301 | range to the full set of intermediate characters. | |
1302 | ||
1303 | In double-quoted strings: | |
1304 | backslashes: | |
1305 | double-quoted style: \r and \n | |
1306 | constants: \x3 | |
1307 | backrefs: \1 (deprecated) | |
1308 | case and quoting: \U \Q \E | |
1309 | stops on @ and $ | |
1310 | ||
1311 | scan_const does *not* construct ops to handle interpolated strings. | |
1312 | It stops processing as soon as it finds an embedded $ or @ variable | |
1313 | and leaves it to the caller to work out what's going on. | |
1314 | ||
da6eedaa | 1315 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @::foo. |
02aa26ce NT |
1316 | |
1317 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1318 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1319 | followed by one of ")| \n\t" | |
1320 | ||
1321 | \1 (backreferences) are turned into $1 | |
1322 | ||
1323 | The structure of the code is | |
1324 | while (there's a character to process) { | |
1325 | handle transliteration ranges | |
1326 | skip regexp comments | |
1327 | skip # initiated comments in //x patterns | |
1328 | check for embedded @foo | |
1329 | check for embedded scalars | |
1330 | if (backslash) { | |
1331 | leave intact backslashes from leave (below) | |
1332 | deprecate \1 in strings and sub replacements | |
1333 | handle string-changing backslashes \l \U \Q \E, etc. | |
1334 | switch (what was escaped) { | |
1335 | handle - in a transliteration (becomes a literal -) | |
1336 | handle \132 octal characters | |
1337 | handle 0x15 hex characters | |
1338 | handle \cV (control V) | |
1339 | handle printf backslashes (\f, \r, \n, etc) | |
1340 | } (end switch) | |
1341 | } (end if backslash) | |
1342 | } (end while character to read) | |
4e553d73 | 1343 | |
02aa26ce NT |
1344 | */ |
1345 | ||
76e3520e | 1346 | STATIC char * |
cea2e8a9 | 1347 | S_scan_const(pTHX_ char *start) |
79072805 | 1348 | { |
3280af22 | 1349 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1350 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1351 | register char *s = start; /* start of the constant */ | |
1352 | register char *d = SvPVX(sv); /* destination for copies */ | |
1353 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1354 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1355 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1356 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1357 | UV uv; |
1358 | ||
dff6d3cd | 1359 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1360 | PL_lex_inpat |
b6d5fef8 | 1361 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1362 | : ""; |
79072805 | 1363 | |
2b9d42f0 NIS |
1364 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1365 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1366 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1367 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1368 | } | |
1369 | ||
1370 | ||
79072805 | 1371 | while (s < send || dorange) { |
02aa26ce | 1372 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1373 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1374 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1375 | if (dorange) { |
1ba5c669 JH |
1376 | I32 i; /* current expanded character */ |
1377 | I32 min; /* first character in range */ | |
1378 | I32 max; /* last character in range */ | |
02aa26ce | 1379 | |
2b9d42f0 | 1380 | if (has_utf8) { |
8973db79 JH |
1381 | char *c = (char*)utf8_hop((U8*)d, -1); |
1382 | char *e = d++; | |
1383 | while (e-- > c) | |
1384 | *(e + 1) = *e; | |
25716404 | 1385 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1386 | /* mark the range as done, and continue */ |
1387 | dorange = FALSE; | |
1388 | didrange = TRUE; | |
1389 | continue; | |
1390 | } | |
2b9d42f0 | 1391 | |
02aa26ce | 1392 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1393 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1394 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1395 | d -= 2; /* eat the first char and the - */ |
1396 | ||
8ada0baa JH |
1397 | min = (U8)*d; /* first char in range */ |
1398 | max = (U8)d[1]; /* last char in range */ | |
1399 | ||
c2e66d9e | 1400 | if (min > max) { |
01ec43d0 | 1401 | Perl_croak(aTHX_ |
d1573ac7 | 1402 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 1403 | (char)min, (char)max); |
c2e66d9e GS |
1404 | } |
1405 | ||
c7f1f016 | 1406 | #ifdef EBCDIC |
8ada0baa JH |
1407 | if ((isLOWER(min) && isLOWER(max)) || |
1408 | (isUPPER(min) && isUPPER(max))) { | |
1409 | if (isLOWER(min)) { | |
1410 | for (i = min; i <= max; i++) | |
1411 | if (isLOWER(i)) | |
db42d148 | 1412 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1413 | } else { |
1414 | for (i = min; i <= max; i++) | |
1415 | if (isUPPER(i)) | |
db42d148 | 1416 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1417 | } |
1418 | } | |
1419 | else | |
1420 | #endif | |
1421 | for (i = min; i <= max; i++) | |
eb160463 | 1422 | *d++ = (char)i; |
02aa26ce NT |
1423 | |
1424 | /* mark the range as done, and continue */ | |
79072805 | 1425 | dorange = FALSE; |
01ec43d0 | 1426 | didrange = TRUE; |
79072805 | 1427 | continue; |
4e553d73 | 1428 | } |
02aa26ce NT |
1429 | |
1430 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1431 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1432 | if (didrange) { |
1fafa243 | 1433 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1434 | } |
2b9d42f0 | 1435 | if (has_utf8) { |
25716404 | 1436 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1437 | s++; |
1438 | continue; | |
1439 | } | |
79072805 LW |
1440 | dorange = TRUE; |
1441 | s++; | |
01ec43d0 GS |
1442 | } |
1443 | else { | |
1444 | didrange = FALSE; | |
1445 | } | |
79072805 | 1446 | } |
02aa26ce NT |
1447 | |
1448 | /* if we get here, we're not doing a transliteration */ | |
1449 | ||
0f5d15d6 IZ |
1450 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1451 | except for the last char, which will be done separately. */ | |
3280af22 | 1452 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 1453 | if (s[2] == '#') { |
e994fd66 | 1454 | while (s+1 < send && *s != ')') |
db42d148 | 1455 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1456 | } |
1457 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1458 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1459 | { | |
cc6b7395 | 1460 | I32 count = 1; |
0f5d15d6 | 1461 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1462 | char c; |
1463 | ||
d9f97599 GS |
1464 | while (count && (c = *regparse)) { |
1465 | if (c == '\\' && regparse[1]) | |
1466 | regparse++; | |
4e553d73 | 1467 | else if (c == '{') |
cc6b7395 | 1468 | count++; |
4e553d73 | 1469 | else if (c == '}') |
cc6b7395 | 1470 | count--; |
d9f97599 | 1471 | regparse++; |
cc6b7395 | 1472 | } |
e994fd66 | 1473 | if (*regparse != ')') |
5bdf89e7 | 1474 | regparse--; /* Leave one char for continuation. */ |
0f5d15d6 | 1475 | while (s < regparse) |
db42d148 | 1476 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1477 | } |
748a9306 | 1478 | } |
02aa26ce NT |
1479 | |
1480 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1481 | else if (*s == '#' && PL_lex_inpat && |
1482 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1483 | while (s+1 < send && *s != '\n') |
db42d148 | 1484 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1485 | } |
02aa26ce | 1486 | |
5d1d4326 | 1487 | /* check for embedded arrays |
da6eedaa | 1488 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 1489 | */ |
7e2040f0 | 1490 | else if (*s == '@' && s[1] |
5d1d4326 | 1491 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1492 | break; |
02aa26ce NT |
1493 | |
1494 | /* check for embedded scalars. only stop if we're sure it's a | |
1495 | variable. | |
1496 | */ | |
79072805 | 1497 | else if (*s == '$') { |
3280af22 | 1498 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1499 | break; |
6002328a | 1500 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1501 | break; /* in regexp, $ might be tail anchor */ |
1502 | } | |
02aa26ce | 1503 | |
2b9d42f0 NIS |
1504 | /* End of else if chain - OP_TRANS rejoin rest */ |
1505 | ||
02aa26ce | 1506 | /* backslashes */ |
79072805 LW |
1507 | if (*s == '\\' && s+1 < send) { |
1508 | s++; | |
02aa26ce NT |
1509 | |
1510 | /* some backslashes we leave behind */ | |
c9f97d15 | 1511 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1512 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1513 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1514 | continue; |
1515 | } | |
02aa26ce NT |
1516 | |
1517 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1518 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1519 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1520 | { |
599cee73 | 1521 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 1522 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
1523 | *--s = '$'; |
1524 | break; | |
1525 | } | |
02aa26ce NT |
1526 | |
1527 | /* string-change backslash escapes */ | |
3280af22 | 1528 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1529 | --s; |
1530 | break; | |
1531 | } | |
02aa26ce NT |
1532 | |
1533 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1534 | switch (*s) { |
02aa26ce NT |
1535 | |
1536 | /* quoted - in transliterations */ | |
79072805 | 1537 | case '-': |
3280af22 | 1538 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1539 | *d++ = *s++; |
1540 | continue; | |
1541 | } | |
1542 | /* FALL THROUGH */ | |
1543 | default: | |
11b8faa4 | 1544 | { |
707afd92 MS |
1545 | if (ckWARN(WARN_MISC) && |
1546 | isALNUM(*s) && | |
1547 | *s != '_') | |
9014280d | 1548 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
11b8faa4 JH |
1549 | "Unrecognized escape \\%c passed through", |
1550 | *s); | |
1551 | /* default action is to copy the quoted character */ | |
f9a63242 | 1552 | goto default_action; |
11b8faa4 | 1553 | } |
02aa26ce NT |
1554 | |
1555 | /* \132 indicates an octal constant */ | |
79072805 LW |
1556 | case '0': case '1': case '2': case '3': |
1557 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1558 | { |
53305cf1 NC |
1559 | I32 flags = 0; |
1560 | STRLEN len = 3; | |
1561 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1562 | s += len; |
1563 | } | |
012bcf8d | 1564 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1565 | |
1566 | /* \x24 indicates a hex constant */ | |
79072805 | 1567 | case 'x': |
a0ed51b3 LW |
1568 | ++s; |
1569 | if (*s == '{') { | |
1570 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1571 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1572 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1573 | STRLEN len; |
355860ce | 1574 | |
53305cf1 | 1575 | ++s; |
adaeee49 | 1576 | if (!e) { |
a0ed51b3 | 1577 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1578 | continue; |
ba210ebe | 1579 | } |
53305cf1 NC |
1580 | len = e - s; |
1581 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1582 | s = e + 1; |
a0ed51b3 LW |
1583 | } |
1584 | else { | |
ba210ebe | 1585 | { |
53305cf1 | 1586 | STRLEN len = 2; |
a4c04bdc | 1587 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1588 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1589 | s += len; |
1590 | } | |
012bcf8d GS |
1591 | } |
1592 | ||
1593 | NUM_ESCAPE_INSERT: | |
1594 | /* Insert oct or hex escaped character. | |
301d3d20 | 1595 | * There will always enough room in sv since such |
db42d148 | 1596 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1597 | * they can end up as. */ |
ba7cea30 | 1598 | |
c7f1f016 NIS |
1599 | /* We need to map to chars to ASCII before doing the tests |
1600 | to cover EBCDIC | |
1601 | */ | |
c4d5f83a | 1602 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1603 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1604 | /* Might need to recode whatever we have |
1605 | * accumulated so far if it contains any | |
1606 | * hibit chars. | |
1607 | * | |
1608 | * (Can't we keep track of that and avoid | |
1609 | * this rescan? --jhi) | |
012bcf8d | 1610 | */ |
c7f1f016 | 1611 | int hicount = 0; |
63cd0674 NIS |
1612 | U8 *c; |
1613 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1614 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1615 | hicount++; |
db42d148 | 1616 | } |
012bcf8d | 1617 | } |
63cd0674 | 1618 | if (hicount) { |
db42d148 NIS |
1619 | STRLEN offset = d - SvPVX(sv); |
1620 | U8 *src, *dst; | |
1621 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1622 | src = (U8 *)d - 1; | |
1623 | dst = src+hicount; | |
1624 | d += hicount; | |
1625 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1626 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1627 | U8 ch = NATIVE_TO_ASCII(*src); |
eb160463 GS |
1628 | *dst-- = (U8)UTF8_EIGHT_BIT_LO(ch); |
1629 | *dst-- = (U8)UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1630 | } |
1631 | else { | |
63cd0674 | 1632 | *dst-- = *src; |
012bcf8d | 1633 | } |
c7f1f016 | 1634 | src--; |
012bcf8d GS |
1635 | } |
1636 | } | |
1637 | } | |
1638 | ||
9aa983d2 | 1639 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1640 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1641 | has_utf8 = TRUE; |
f9a63242 JH |
1642 | if (PL_lex_inwhat == OP_TRANS && |
1643 | PL_sublex_info.sub_op) { | |
1644 | PL_sublex_info.sub_op->op_private |= | |
1645 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1646 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1647 | } |
012bcf8d | 1648 | } |
a0ed51b3 | 1649 | else { |
012bcf8d | 1650 | *d++ = (char)uv; |
a0ed51b3 | 1651 | } |
012bcf8d GS |
1652 | } |
1653 | else { | |
c4d5f83a | 1654 | *d++ = (char) uv; |
a0ed51b3 | 1655 | } |
79072805 | 1656 | continue; |
02aa26ce | 1657 | |
b239daa5 | 1658 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1659 | case 'N': |
55eda711 | 1660 | ++s; |
423cee85 JH |
1661 | if (*s == '{') { |
1662 | char* e = strchr(s, '}'); | |
155aba94 | 1663 | SV *res; |
423cee85 JH |
1664 | STRLEN len; |
1665 | char *str; | |
4e553d73 | 1666 | |
423cee85 | 1667 | if (!e) { |
5777a3f7 | 1668 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1669 | e = s - 1; |
1670 | goto cont_scan; | |
1671 | } | |
dbc0d4f2 JH |
1672 | if (e > s + 2 && s[1] == 'U' && s[2] == '+') { |
1673 | /* \N{U+...} */ | |
1674 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | | |
1675 | PERL_SCAN_DISALLOW_PREFIX; | |
1676 | s += 3; | |
1677 | len = e - s; | |
1678 | uv = grok_hex(s, &len, &flags, NULL); | |
1679 | s = e + 1; | |
1680 | goto NUM_ESCAPE_INSERT; | |
1681 | } | |
55eda711 JH |
1682 | res = newSVpvn(s + 1, e - s - 1); |
1683 | res = new_constant( Nullch, 0, "charnames", | |
1684 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1685 | if (has_utf8) |
1686 | sv_utf8_upgrade(res); | |
423cee85 | 1687 | str = SvPV(res,len); |
1c47067b JH |
1688 | #ifdef EBCDIC_NEVER_MIND |
1689 | /* charnames uses pack U and that has been | |
1690 | * recently changed to do the below uni->native | |
1691 | * mapping, so this would be redundant (and wrong, | |
1692 | * the code point would be doubly converted). | |
1693 | * But leave this in just in case the pack U change | |
1694 | * gets revoked, but the semantics is still | |
1695 | * desireable for charnames. --jhi */ | |
cddc7ef4 JH |
1696 | { |
1697 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1698 | ||
1699 | if (uv < 0x100) { | |
1700 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1701 | ||
1702 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1703 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1704 | str = SvPV(res, len); | |
1705 | } | |
1706 | } | |
1707 | #endif | |
89491803 | 1708 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1709 | char *ostart = SvPVX(sv); |
1710 | SvCUR_set(sv, d - ostart); | |
1711 | SvPOK_on(sv); | |
e4f3eed8 | 1712 | *d = '\0'; |
f08d6ad9 | 1713 | sv_utf8_upgrade(sv); |
d2f449dd | 1714 | /* this just broke our allocation above... */ |
eb160463 | 1715 | SvGROW(sv, (STRLEN)(send - start)); |
f08d6ad9 | 1716 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1717 | has_utf8 = TRUE; |
f08d6ad9 | 1718 | } |
eb160463 | 1719 | if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1720 | char *odest = SvPVX(sv); |
1721 | ||
8973db79 | 1722 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1723 | d = SvPVX(sv) + (d - odest); |
1724 | } | |
1725 | Copy(str, d, len, char); | |
1726 | d += len; | |
1727 | SvREFCNT_dec(res); | |
1728 | cont_scan: | |
1729 | s = e + 1; | |
1730 | } | |
1731 | else | |
5777a3f7 | 1732 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1733 | continue; |
1734 | ||
02aa26ce | 1735 | /* \c is a control character */ |
79072805 LW |
1736 | case 'c': |
1737 | s++; | |
961ce445 | 1738 | if (s < send) { |
ba210ebe | 1739 | U8 c = *s++; |
c7f1f016 NIS |
1740 | #ifdef EBCDIC |
1741 | if (isLOWER(c)) | |
1742 | c = toUPPER(c); | |
1743 | #endif | |
db42d148 | 1744 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1745 | } |
961ce445 RGS |
1746 | else { |
1747 | yyerror("Missing control char name in \\c"); | |
1748 | } | |
79072805 | 1749 | continue; |
02aa26ce NT |
1750 | |
1751 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1752 | case 'b': |
db42d148 | 1753 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1754 | break; |
1755 | case 'n': | |
db42d148 | 1756 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1757 | break; |
1758 | case 'r': | |
db42d148 | 1759 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1760 | break; |
1761 | case 'f': | |
db42d148 | 1762 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1763 | break; |
1764 | case 't': | |
db42d148 | 1765 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1766 | break; |
34a3fe2a | 1767 | case 'e': |
db42d148 | 1768 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1769 | break; |
1770 | case 'a': | |
db42d148 | 1771 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1772 | break; |
02aa26ce NT |
1773 | } /* end switch */ |
1774 | ||
79072805 LW |
1775 | s++; |
1776 | continue; | |
02aa26ce NT |
1777 | } /* end if (backslash) */ |
1778 | ||
f9a63242 | 1779 | default_action: |
2b9d42f0 NIS |
1780 | /* If we started with encoded form, or already know we want it |
1781 | and then encode the next character */ | |
1782 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1783 | STRLEN len = 1; | |
1784 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1785 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1786 | s += len; | |
1787 | if (need > len) { | |
1788 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1789 | STRLEN off = d - SvPVX(sv); | |
1790 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1791 | } | |
1792 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1793 | has_utf8 = TRUE; | |
1794 | } | |
1795 | else { | |
1796 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1797 | } | |
02aa26ce NT |
1798 | } /* while loop to process each character */ |
1799 | ||
1800 | /* terminate the string and set up the sv */ | |
79072805 | 1801 | *d = '\0'; |
463ee0b2 | 1802 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1803 | if (SvCUR(sv) >= SvLEN(sv)) |
d0063567 | 1804 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1805 | |
79072805 | 1806 | SvPOK_on(sv); |
9f4817db | 1807 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
1808 | sv_recode_to_utf8(sv, PL_encoding); |
1809 | if (SvUTF8(sv)) | |
1810 | has_utf8 = TRUE; | |
9f4817db | 1811 | } |
2b9d42f0 | 1812 | if (has_utf8) { |
7e2040f0 | 1813 | SvUTF8_on(sv); |
2b9d42f0 | 1814 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 1815 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
1816 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
1817 | } | |
1818 | } | |
79072805 | 1819 | |
02aa26ce | 1820 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1821 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1822 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1823 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1824 | } |
02aa26ce | 1825 | |
9b599b2a | 1826 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1827 | if (s > PL_bufptr) { |
1828 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1829 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1830 | sv, Nullsv, |
4e553d73 | 1831 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1832 | ? "tr" |
3280af22 | 1833 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1834 | ? "s" |
1835 | : "qq"))); | |
79072805 | 1836 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1837 | } else |
8990e307 | 1838 | SvREFCNT_dec(sv); |
79072805 LW |
1839 | return s; |
1840 | } | |
1841 | ||
ffb4593c NT |
1842 | /* S_intuit_more |
1843 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1844 | * FALSE otherwise. | |
ffb4593c NT |
1845 | * |
1846 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1847 | * | |
1848 | * ->[ and ->{ return TRUE | |
1849 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1850 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1851 | * if we're in a pattern and the first char is a { | |
1852 | * {4,5} (any digits around the comma) returns FALSE | |
1853 | * if we're in a pattern and the first char is a [ | |
1854 | * [] returns FALSE | |
1855 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1856 | * character class or not. It has to deal with things like | |
1857 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1858 | * anything else returns TRUE | |
1859 | */ | |
1860 | ||
9cbb5ea2 GS |
1861 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1862 | ||
76e3520e | 1863 | STATIC int |
cea2e8a9 | 1864 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1865 | { |
3280af22 | 1866 | if (PL_lex_brackets) |
79072805 LW |
1867 | return TRUE; |
1868 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1869 | return TRUE; | |
1870 | if (*s != '{' && *s != '[') | |
1871 | return FALSE; | |
3280af22 | 1872 | if (!PL_lex_inpat) |
79072805 LW |
1873 | return TRUE; |
1874 | ||
1875 | /* In a pattern, so maybe we have {n,m}. */ | |
1876 | if (*s == '{') { | |
1877 | s++; | |
1878 | if (!isDIGIT(*s)) | |
1879 | return TRUE; | |
1880 | while (isDIGIT(*s)) | |
1881 | s++; | |
1882 | if (*s == ',') | |
1883 | s++; | |
1884 | while (isDIGIT(*s)) | |
1885 | s++; | |
1886 | if (*s == '}') | |
1887 | return FALSE; | |
1888 | return TRUE; | |
1889 | ||
1890 | } | |
1891 | ||
1892 | /* On the other hand, maybe we have a character class */ | |
1893 | ||
1894 | s++; | |
1895 | if (*s == ']' || *s == '^') | |
1896 | return FALSE; | |
1897 | else { | |
ffb4593c | 1898 | /* this is terrifying, and it works */ |
79072805 LW |
1899 | int weight = 2; /* let's weigh the evidence */ |
1900 | char seen[256]; | |
f27ffc4a | 1901 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1902 | char *send = strchr(s,']'); |
3280af22 | 1903 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1904 | |
1905 | if (!send) /* has to be an expression */ | |
1906 | return TRUE; | |
1907 | ||
1908 | Zero(seen,256,char); | |
1909 | if (*s == '$') | |
1910 | weight -= 3; | |
1911 | else if (isDIGIT(*s)) { | |
1912 | if (s[1] != ']') { | |
1913 | if (isDIGIT(s[1]) && s[2] == ']') | |
1914 | weight -= 10; | |
1915 | } | |
1916 | else | |
1917 | weight -= 100; | |
1918 | } | |
1919 | for (; s < send; s++) { | |
1920 | last_un_char = un_char; | |
1921 | un_char = (unsigned char)*s; | |
1922 | switch (*s) { | |
1923 | case '@': | |
1924 | case '&': | |
1925 | case '$': | |
1926 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1927 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1928 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1929 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1930 | weight -= 100; |
1931 | else | |
1932 | weight -= 10; | |
1933 | } | |
1934 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1935 | strchr("[#!%*<>()-=",s[1])) { |
1936 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1937 | weight -= 10; |
1938 | else | |
1939 | weight -= 1; | |
1940 | } | |
1941 | break; | |
1942 | case '\\': | |
1943 | un_char = 254; | |
1944 | if (s[1]) { | |
93a17b20 | 1945 | if (strchr("wds]",s[1])) |
79072805 LW |
1946 | weight += 100; |
1947 | else if (seen['\''] || seen['"']) | |
1948 | weight += 1; | |
93a17b20 | 1949 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1950 | weight += 40; |
1951 | else if (isDIGIT(s[1])) { | |
1952 | weight += 40; | |
1953 | while (s[1] && isDIGIT(s[1])) | |
1954 | s++; | |
1955 | } | |
1956 | } | |
1957 | else | |
1958 | weight += 100; | |
1959 | break; | |
1960 | case '-': | |
1961 | if (s[1] == '\\') | |
1962 | weight += 50; | |
93a17b20 | 1963 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1964 | weight += 30; |
93a17b20 | 1965 | if (strchr("zZ79~",s[1])) |
79072805 | 1966 | weight += 30; |
f27ffc4a GS |
1967 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1968 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1969 | break; |
1970 | default: | |
3792a11b NC |
1971 | if (!isALNUM(last_un_char) |
1972 | && !(last_un_char == '$' || last_un_char == '@' | |
1973 | || last_un_char == '&') | |
1974 | && isALPHA(*s) && s[1] && isALPHA(s[1])) { | |
79072805 LW |
1975 | char *d = tmpbuf; |
1976 | while (isALPHA(*s)) | |
1977 | *d++ = *s++; | |
1978 | *d = '\0'; | |
1979 | if (keyword(tmpbuf, d - tmpbuf)) | |
1980 | weight -= 150; | |
1981 | } | |
1982 | if (un_char == last_un_char + 1) | |
1983 | weight += 5; | |
1984 | weight -= seen[un_char]; | |
1985 | break; | |
1986 | } | |
1987 | seen[un_char]++; | |
1988 | } | |
1989 | if (weight >= 0) /* probably a character class */ | |
1990 | return FALSE; | |
1991 | } | |
1992 | ||
1993 | return TRUE; | |
1994 | } | |
ffed7fef | 1995 | |
ffb4593c NT |
1996 | /* |
1997 | * S_intuit_method | |
1998 | * | |
1999 | * Does all the checking to disambiguate | |
2000 | * foo bar | |
2001 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
2002 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
2003 | * | |
2004 | * First argument is the stuff after the first token, e.g. "bar". | |
2005 | * | |
2006 | * Not a method if bar is a filehandle. | |
2007 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
2008 | * Not a method if it's really "Foo $bar" | |
2009 | * Method if it's "foo $bar" | |
2010 | * Not a method if it's really "print foo $bar" | |
2011 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 2012 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 2013 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
2014 | * => |
2015 | */ | |
2016 | ||
76e3520e | 2017 | STATIC int |
cea2e8a9 | 2018 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
2019 | { |
2020 | char *s = start + (*start == '$'); | |
3280af22 | 2021 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2022 | STRLEN len; |
2023 | GV* indirgv; | |
2024 | ||
2025 | if (gv) { | |
b6c543e3 | 2026 | CV *cv; |
a0d0e21e LW |
2027 | if (GvIO(gv)) |
2028 | return 0; | |
b6c543e3 IZ |
2029 | if ((cv = GvCVu(gv))) { |
2030 | char *proto = SvPVX(cv); | |
2031 | if (proto) { | |
2032 | if (*proto == ';') | |
2033 | proto++; | |
2034 | if (*proto == '*') | |
2035 | return 0; | |
2036 | } | |
2037 | } else | |
a0d0e21e LW |
2038 | gv = 0; |
2039 | } | |
8903cb82 | 2040 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
2041 | /* start is the beginning of the possible filehandle/object, |
2042 | * and s is the end of it | |
2043 | * tmpbuf is a copy of it | |
2044 | */ | |
2045 | ||
a0d0e21e | 2046 | if (*start == '$') { |
3280af22 | 2047 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
2048 | return 0; |
2049 | s = skipspace(s); | |
3280af22 NIS |
2050 | PL_bufptr = start; |
2051 | PL_expect = XREF; | |
a0d0e21e LW |
2052 | return *s == '(' ? FUNCMETH : METHOD; |
2053 | } | |
2054 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
2055 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
2056 | len -= 2; | |
2057 | tmpbuf[len] = '\0'; | |
2058 | goto bare_package; | |
2059 | } | |
2060 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 2061 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
2062 | return 0; |
2063 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 2064 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 2065 | s = skipspace(s); |
3280af22 | 2066 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 2067 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 2068 | bare_package: |
3280af22 | 2069 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 2070 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
2071 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
2072 | PL_expect = XTERM; | |
a0d0e21e | 2073 | force_next(WORD); |
3280af22 | 2074 | PL_bufptr = s; |
a0d0e21e LW |
2075 | return *s == '(' ? FUNCMETH : METHOD; |
2076 | } | |
2077 | } | |
2078 | return 0; | |
2079 | } | |
2080 | ||
ffb4593c NT |
2081 | /* |
2082 | * S_incl_perldb | |
2083 | * Return a string of Perl code to load the debugger. If PERL5DB | |
2084 | * is set, it will return the contents of that, otherwise a | |
2085 | * compile-time require of perl5db.pl. | |
2086 | */ | |
2087 | ||
76e3520e | 2088 | STATIC char* |
cea2e8a9 | 2089 | S_incl_perldb(pTHX) |
a0d0e21e | 2090 | { |
3280af22 | 2091 | if (PL_perldb) { |
76e3520e | 2092 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
2093 | |
2094 | if (pdb) | |
2095 | return pdb; | |
93189314 | 2096 | SETERRNO(0,SS_NORMAL); |
a0d0e21e LW |
2097 | return "BEGIN { require 'perl5db.pl' }"; |
2098 | } | |
2099 | return ""; | |
2100 | } | |
2101 | ||
2102 | ||
16d20bd9 | 2103 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 2104 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
2105 | * Note that the filter function only applies to the current source file |
2106 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
2107 | * | |
2108 | * The datasv parameter (which may be NULL) can be used to pass | |
2109 | * private data to this instance of the filter. The filter function | |
2110 | * can recover the SV using the FILTER_DATA macro and use it to | |
2111 | * store private buffers and state information. | |
2112 | * | |
2113 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 2114 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 2115 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
2116 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
2117 | * private use must be set using malloc'd pointers. | |
2118 | */ | |
16d20bd9 AD |
2119 | |
2120 | SV * | |
864dbfa3 | 2121 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 2122 | { |
f4c556ac GS |
2123 | if (!funcp) |
2124 | return Nullsv; | |
2125 | ||
3280af22 NIS |
2126 | if (!PL_rsfp_filters) |
2127 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 2128 | if (!datasv) |
8c52afec | 2129 | datasv = NEWSV(255,0); |
16d20bd9 | 2130 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 2131 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 2132 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 2133 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 2134 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 2135 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
2136 | av_unshift(PL_rsfp_filters, 1); |
2137 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
2138 | return(datasv); |
2139 | } | |
4e553d73 | 2140 | |
16d20bd9 AD |
2141 | |
2142 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2143 | void |
864dbfa3 | 2144 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2145 | { |
e0c19803 | 2146 | SV *datasv; |
fe5a182c | 2147 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2148 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2149 | return; |
2150 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2151 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2152 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2153 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2154 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2155 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2156 | |
16d20bd9 AD |
2157 | return; |
2158 | } | |
2159 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2160 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2161 | } |
2162 | ||
2163 | ||
1de9afcd RGS |
2164 | /* Invoke the idxth filter function for the current rsfp. */ |
2165 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 2166 | I32 |
864dbfa3 | 2167 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 2168 | { |
16d20bd9 AD |
2169 | filter_t funcp; |
2170 | SV *datasv = NULL; | |
e50aee73 | 2171 | |
3280af22 | 2172 | if (!PL_rsfp_filters) |
16d20bd9 | 2173 | return -1; |
1de9afcd | 2174 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
2175 | /* Provide a default input filter to make life easy. */ |
2176 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2177 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2178 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2179 | if (maxlen) { |
16d20bd9 AD |
2180 | /* Want a block */ |
2181 | int len ; | |
2182 | int old_len = SvCUR(buf_sv) ; | |
2183 | ||
2184 | /* ensure buf_sv is large enough */ | |
eb160463 | 2185 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2186 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2187 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2188 | return -1; /* error */ |
2189 | else | |
2190 | return 0 ; /* end of file */ | |
2191 | } | |
16d20bd9 AD |
2192 | SvCUR_set(buf_sv, old_len + len) ; |
2193 | } else { | |
2194 | /* Want a line */ | |
3280af22 NIS |
2195 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2196 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2197 | return -1; /* error */ |
2198 | else | |
2199 | return 0 ; /* end of file */ | |
2200 | } | |
16d20bd9 AD |
2201 | } |
2202 | return SvCUR(buf_sv); | |
2203 | } | |
2204 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 2205 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
2206 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2207 | "filter_read %d: skipped (filter deleted)\n", | |
2208 | idx)); | |
16d20bd9 AD |
2209 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2210 | } | |
2211 | /* Get function pointer hidden within datasv */ | |
4755096e | 2212 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2213 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2214 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2215 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2216 | /* Call function. The function is expected to */ |
2217 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2218 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2219 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2220 | } |
2221 | ||
76e3520e | 2222 | STATIC char * |
cea2e8a9 | 2223 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2224 | { |
c39cd008 | 2225 | #ifdef PERL_CR_FILTER |
3280af22 | 2226 | if (!PL_rsfp_filters) { |
c39cd008 | 2227 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2228 | } |
2229 | #endif | |
3280af22 | 2230 | if (PL_rsfp_filters) { |
55497cff | 2231 | if (!append) |
2232 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2233 | if (FILTER_READ(0, sv, 0) > 0) |
2234 | return ( SvPVX(sv) ) ; | |
2235 | else | |
2236 | return Nullch ; | |
2237 | } | |
9d116dd7 | 2238 | else |
fd049845 | 2239 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2240 | } |
2241 | ||
01ec43d0 GS |
2242 | STATIC HV * |
2243 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2244 | { |
2245 | GV *gv; | |
2246 | ||
01ec43d0 | 2247 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2248 | return PL_curstash; |
2249 | ||
2250 | if (len > 2 && | |
2251 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2252 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2253 | { | |
2254 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2255 | } |
2256 | ||
2257 | /* use constant CLASS => 'MyClass' */ | |
2258 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2259 | SV *sv; | |
2260 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2261 | pkgname = SvPV_nolen(sv); | |
2262 | } | |
2263 | } | |
2264 | ||
2265 | return gv_stashpv(pkgname, FALSE); | |
2266 | } | |
a0d0e21e | 2267 | |
748a9306 LW |
2268 | #ifdef DEBUGGING |
2269 | static char* exp_name[] = | |
09bef843 | 2270 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 2271 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 2272 | }; |
748a9306 | 2273 | #endif |
463ee0b2 | 2274 | |
02aa26ce NT |
2275 | /* |
2276 | yylex | |
2277 | ||
2278 | Works out what to call the token just pulled out of the input | |
2279 | stream. The yacc parser takes care of taking the ops we return and | |
2280 | stitching them into a tree. | |
2281 | ||
2282 | Returns: | |
2283 | PRIVATEREF | |
2284 | ||
2285 | Structure: | |
2286 | if read an identifier | |
2287 | if we're in a my declaration | |
2288 | croak if they tried to say my($foo::bar) | |
2289 | build the ops for a my() declaration | |
2290 | if it's an access to a my() variable | |
2291 | are we in a sort block? | |
2292 | croak if my($a); $a <=> $b | |
2293 | build ops for access to a my() variable | |
2294 | if in a dq string, and they've said @foo and we can't find @foo | |
2295 | croak | |
2296 | build ops for a bareword | |
2297 | if we already built the token before, use it. | |
2298 | */ | |
2299 | ||
20141f0e | 2300 | |
dba4d153 JH |
2301 | #ifdef __SC__ |
2302 | #pragma segment Perl_yylex | |
2303 | #endif | |
dba4d153 | 2304 | int |
dba4d153 | 2305 | Perl_yylex(pTHX) |
20141f0e | 2306 | { |
3afc138a | 2307 | register char *s = PL_bufptr; |
378cc40b | 2308 | register char *d; |
79072805 | 2309 | register I32 tmp; |
463ee0b2 | 2310 | STRLEN len; |
161b471a NIS |
2311 | GV *gv = Nullgv; |
2312 | GV **gvp = 0; | |
aa7440fb | 2313 | bool bof = FALSE; |
1d239bbb | 2314 | I32 orig_keyword = 0; |
a687059c | 2315 | |
bbf60fe6 DM |
2316 | DEBUG_T( { |
2317 | PerlIO_printf(Perl_debug_log, "### LEX_%s\n", | |
2318 | lex_state_names[PL_lex_state]); | |
2319 | } ); | |
02aa26ce | 2320 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2321 | if (PL_pending_ident) |
bbf60fe6 | 2322 | return REPORT(S_pending_ident(aTHX)); |
bbce6d69 | 2323 | |
02aa26ce NT |
2324 | /* no identifier pending identification */ |
2325 | ||
3280af22 | 2326 | switch (PL_lex_state) { |
79072805 LW |
2327 | #ifdef COMMENTARY |
2328 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2329 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2330 | break; | |
2331 | #endif | |
2332 | ||
09bef843 | 2333 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2334 | case LEX_KNOWNEXT: |
3280af22 NIS |
2335 | PL_nexttoke--; |
2336 | yylval = PL_nextval[PL_nexttoke]; | |
2337 | if (!PL_nexttoke) { | |
2338 | PL_lex_state = PL_lex_defer; | |
2339 | PL_expect = PL_lex_expect; | |
2340 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2341 | } |
607df283 | 2342 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2343 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2344 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2345 | |
bbf60fe6 | 2346 | return REPORT(PL_nexttype[PL_nexttoke]); |
79072805 | 2347 | |
02aa26ce | 2348 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2349 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2350 | */ |
79072805 LW |
2351 | case LEX_INTERPCASEMOD: |
2352 | #ifdef DEBUGGING | |
3280af22 | 2353 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2354 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2355 | #endif |
02aa26ce | 2356 | /* handle \E or end of string */ |
3280af22 | 2357 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2358 | char oldmod; |
02aa26ce NT |
2359 | |
2360 | /* if at a \E */ | |
3280af22 NIS |
2361 | if (PL_lex_casemods) { |
2362 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2363 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2364 | |
3792a11b NC |
2365 | if (PL_bufptr != PL_bufend |
2366 | && (oldmod == 'L' || oldmod == 'U' || oldmod == 'Q')) { | |
3280af22 NIS |
2367 | PL_bufptr += 2; |
2368 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2369 | } |
bbf60fe6 | 2370 | return REPORT(')'); |
79072805 | 2371 | } |
3280af22 NIS |
2372 | if (PL_bufptr != PL_bufend) |
2373 | PL_bufptr += 2; | |
2374 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2375 | return yylex(); |
79072805 LW |
2376 | } |
2377 | else { | |
607df283 | 2378 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2379 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2380 | s = PL_bufptr + 1; |
6e909404 JH |
2381 | if (s[1] == '\\' && s[2] == 'E') { |
2382 | PL_bufptr = s + 3; | |
2383 | PL_lex_state = LEX_INTERPCONCAT; | |
2384 | return yylex(); | |
a0d0e21e | 2385 | } |
6e909404 JH |
2386 | else { |
2387 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
2388 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
3792a11b | 2389 | if ((*s == 'L' || *s == 'U') && |
6e909404 JH |
2390 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { |
2391 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
bbf60fe6 | 2392 | return REPORT(')'); |
6e909404 JH |
2393 | } |
2394 | if (PL_lex_casemods > 10) | |
2395 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2396 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
2397 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2398 | PL_lex_state = LEX_INTERPCONCAT; | |
2399 | PL_nextval[PL_nexttoke].ival = 0; | |
2400 | force_next('('); | |
2401 | if (*s == 'l') | |
2402 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; | |
2403 | else if (*s == 'u') | |
2404 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; | |
2405 | else if (*s == 'L') | |
2406 | PL_nextval[PL_nexttoke].ival = OP_LC; | |
2407 | else if (*s == 'U') | |
2408 | PL_nextval[PL_nexttoke].ival = OP_UC; | |
2409 | else if (*s == 'Q') | |
2410 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; | |
2411 | else | |
2412 | Perl_croak(aTHX_ "panic: yylex"); | |
2413 | PL_bufptr = s + 1; | |
a0d0e21e | 2414 | } |
79072805 | 2415 | force_next(FUNC); |
3280af22 NIS |
2416 | if (PL_lex_starts) { |
2417 | s = PL_bufptr; | |
2418 | PL_lex_starts = 0; | |
131b3ad0 DM |
2419 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2420 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
2421 | OPERATOR(','); | |
2422 | else | |
2423 | Aop(OP_CONCAT); | |
79072805 LW |
2424 | } |
2425 | else | |
cea2e8a9 | 2426 | return yylex(); |
79072805 LW |
2427 | } |
2428 | ||
55497cff | 2429 | case LEX_INTERPPUSH: |
bbf60fe6 | 2430 | return REPORT(sublex_push()); |
55497cff | 2431 | |
79072805 | 2432 | case LEX_INTERPSTART: |
3280af22 | 2433 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2434 | return REPORT(sublex_done()); |
607df283 | 2435 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2436 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2437 | PL_expect = XTERM; |
2438 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2439 | PL_lex_state = LEX_INTERPNORMAL; | |
2440 | if (PL_lex_dojoin) { | |
2441 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2442 | force_next(','); |
a0d0e21e | 2443 | force_ident("\"", '$'); |
3280af22 | 2444 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2445 | force_next('$'); |
3280af22 | 2446 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2447 | force_next('('); |
3280af22 | 2448 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2449 | force_next(FUNC); |
2450 | } | |
3280af22 NIS |
2451 | if (PL_lex_starts++) { |
2452 | s = PL_bufptr; | |
131b3ad0 DM |
2453 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2454 | if (!PL_lex_casemods && PL_lex_inpat) | |
2455 | OPERATOR(','); | |
2456 | else | |
2457 | Aop(OP_CONCAT); | |
79072805 | 2458 | } |
cea2e8a9 | 2459 | return yylex(); |
79072805 LW |
2460 | |
2461 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2462 | if (intuit_more(PL_bufptr)) { |
2463 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2464 | break; |
2465 | } | |
2466 | /* FALL THROUGH */ | |
2467 | ||
2468 | case LEX_INTERPEND: | |
3280af22 NIS |
2469 | if (PL_lex_dojoin) { |
2470 | PL_lex_dojoin = FALSE; | |
2471 | PL_lex_state = LEX_INTERPCONCAT; | |
bbf60fe6 | 2472 | return REPORT(')'); |
79072805 | 2473 | } |
43a16006 | 2474 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2475 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2476 | { |
e9fa98b2 | 2477 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2478 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2479 | PL_lex_repl = Nullsv; |
2480 | } | |
79072805 LW |
2481 | /* FALLTHROUGH */ |
2482 | case LEX_INTERPCONCAT: | |
2483 | #ifdef DEBUGGING | |
3280af22 | 2484 | if (PL_lex_brackets) |
cea2e8a9 | 2485 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2486 | #endif |
3280af22 | 2487 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2488 | return REPORT(sublex_done()); |
79072805 | 2489 | |
3280af22 NIS |
2490 | if (SvIVX(PL_linestr) == '\'') { |
2491 | SV *sv = newSVsv(PL_linestr); | |
2492 | if (!PL_lex_inpat) | |
76e3520e | 2493 | sv = tokeq(sv); |
3280af22 | 2494 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2495 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2496 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2497 | s = PL_bufend; |
79072805 LW |
2498 | } |
2499 | else { | |
3280af22 | 2500 | s = scan_const(PL_bufptr); |
79072805 | 2501 | if (*s == '\\') |
3280af22 | 2502 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2503 | else |
3280af22 | 2504 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2505 | } |
2506 | ||
3280af22 NIS |
2507 | if (s != PL_bufptr) { |
2508 | PL_nextval[PL_nexttoke] = yylval; | |
2509 | PL_expect = XTERM; | |
79072805 | 2510 | force_next(THING); |
131b3ad0 DM |
2511 | if (PL_lex_starts++) { |
2512 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ | |
2513 | if (!PL_lex_casemods && PL_lex_inpat) | |
2514 | OPERATOR(','); | |
2515 | else | |
2516 | Aop(OP_CONCAT); | |
2517 | } | |
79072805 | 2518 | else { |
3280af22 | 2519 | PL_bufptr = s; |
cea2e8a9 | 2520 | return yylex(); |
79072805 LW |
2521 | } |
2522 | } | |
2523 | ||
cea2e8a9 | 2524 | return yylex(); |
a0d0e21e | 2525 | case LEX_FORMLINE: |
3280af22 NIS |
2526 | PL_lex_state = LEX_NORMAL; |
2527 | s = scan_formline(PL_bufptr); | |
2528 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2529 | goto rightbracket; |
2530 | OPERATOR(';'); | |
79072805 LW |
2531 | } |
2532 | ||
3280af22 NIS |
2533 | s = PL_bufptr; |
2534 | PL_oldoldbufptr = PL_oldbufptr; | |
2535 | PL_oldbufptr = s; | |
607df283 | 2536 | DEBUG_T( { |
bbf60fe6 | 2537 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at [%s]\n", |
bf49b057 | 2538 | exp_name[PL_expect], s); |
5f80b19c | 2539 | } ); |
463ee0b2 LW |
2540 | |
2541 | retry: | |
378cc40b LW |
2542 | switch (*s) { |
2543 | default: | |
7e2040f0 | 2544 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2545 | goto keylookup; |
cea2e8a9 | 2546 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2547 | case 4: |
2548 | case 26: | |
2549 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2550 | case 0: |
3280af22 NIS |
2551 | if (!PL_rsfp) { |
2552 | PL_last_uni = 0; | |
2553 | PL_last_lop = 0; | |
c5ee2135 WL |
2554 | if (PL_lex_brackets) { |
2555 | if (PL_lex_formbrack) | |
2556 | yyerror("Format not terminated"); | |
2557 | else | |
2558 | yyerror("Missing right curly or square bracket"); | |
2559 | } | |
4e553d73 | 2560 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2561 | "### Tokener got EOF\n"); |
5f80b19c | 2562 | } ); |
79072805 | 2563 | TOKEN(0); |
463ee0b2 | 2564 | } |
3280af22 | 2565 | if (s++ < PL_bufend) |
a687059c | 2566 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2567 | PL_last_uni = 0; |
2568 | PL_last_lop = 0; | |
2569 | if (!PL_in_eval && !PL_preambled) { | |
2570 | PL_preambled = TRUE; | |
2571 | sv_setpv(PL_linestr,incl_perldb()); | |
2572 | if (SvCUR(PL_linestr)) | |
4147a61b | 2573 | sv_catpvn(PL_linestr,";", 1); |
3280af22 NIS |
2574 | if (PL_preambleav){ |
2575 | while(AvFILLp(PL_preambleav) >= 0) { | |
2576 | SV *tmpsv = av_shift(PL_preambleav); | |
2577 | sv_catsv(PL_linestr, tmpsv); | |
4147a61b | 2578 | sv_catpvn(PL_linestr, ";", 1); |
91b7def8 | 2579 | sv_free(tmpsv); |
2580 | } | |
3280af22 NIS |
2581 | sv_free((SV*)PL_preambleav); |
2582 | PL_preambleav = NULL; | |
91b7def8 | 2583 | } |
3280af22 NIS |
2584 | if (PL_minus_n || PL_minus_p) { |
2585 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2586 | if (PL_minus_l) | |
2587 | sv_catpv(PL_linestr,"chomp;"); | |
2588 | if (PL_minus_a) { | |
3280af22 | 2589 | if (PL_minus_F) { |
3792a11b NC |
2590 | if ((*PL_splitstr == '/' || *PL_splitstr == '\'' |
2591 | || *PL_splitstr == '"') | |
3280af22 | 2592 | && strchr(PL_splitstr + 1, *PL_splitstr)) |
3db68c4c | 2593 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2594 | else { |
c8ef6a4b NC |
2595 | /* "q\0${splitstr}\0" is legal perl. Yes, even NUL |
2596 | bytes can be used as quoting characters. :-) */ | |
48c4c863 NC |
2597 | /* The count here deliberately includes the NUL |
2598 | that terminates the C string constant. This | |
2599 | embeds the opening NUL into the string. */ | |
9a3fb652 | 2600 | sv_catpvn(PL_linestr, "our @F=split(q", 15); |
48c4c863 NC |
2601 | s = PL_splitstr; |
2602 | do { | |
2603 | /* Need to \ \s */ | |
2604 | if (*s == '\\') | |
2605 | sv_catpvn(PL_linestr, s, 1); | |
2606 | sv_catpvn(PL_linestr, s, 1); | |
2607 | } while (*s++); | |
2608 | /* This loop will embed the trailing NUL of | |
2609 | PL_linestr as the last thing it does before | |
2610 | terminating. */ | |
4fccd7c6 | 2611 | sv_catpvn(PL_linestr, ");", 2); |
54310121 | 2612 | } |
2304df62 AD |
2613 | } |
2614 | else | |
75c72d73 | 2615 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2616 | } |
79072805 | 2617 | } |
4147a61b | 2618 | sv_catpvn(PL_linestr, "\n", 1); |
3280af22 NIS |
2619 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2620 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2621 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2622 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2623 | SV *sv = NEWSV(85,0); |
2624 | ||
2625 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2626 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2627 | (void)SvIOK_on(sv); |
2628 | SvIVX(sv) = 0; | |
57843af0 | 2629 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2630 | } |
79072805 | 2631 | goto retry; |
a687059c | 2632 | } |
e929a76b | 2633 | do { |
aa7440fb | 2634 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2635 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2636 | fake_eof: | |
2637 | if (PL_rsfp) { | |
2638 | if (PL_preprocess && !PL_in_eval) | |
2639 | (void)PerlProc_pclose(PL_rsfp); | |
2640 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2641 | PerlIO_clearerr(PL_rsfp); | |
2642 | else | |
2643 | (void)PerlIO_close(PL_rsfp); | |
2644 | PL_rsfp = Nullfp; | |
2645 | PL_doextract = FALSE; | |
2646 | } | |
2647 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
a23c4656 NC |
2648 | sv_setpv(PL_linestr,PL_minus_p |
2649 | ? ";}continue{print;}" : ";}"); | |
7e28d3af JH |
2650 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
2651 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2652 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2653 | PL_minus_n = PL_minus_p = 0; |
2654 | goto retry; | |
2655 | } | |
2656 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2657 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2658 | sv_setpv(PL_linestr,""); |
2659 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2660 | } | |
7aa207d6 JH |
2661 | /* If it looks like the start of a BOM or raw UTF-16, |
2662 | * check if it in fact is. */ | |
2663 | else if (bof && | |
2664 | (*s == 0 || | |
2665 | *(U8*)s == 0xEF || | |
2666 | *(U8*)s >= 0xFE || | |
2667 | s[1] == 0)) { | |
226017aa | 2668 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2669 | # ifdef __GNU_LIBRARY__ |
2670 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2671 | # define FTELL_FOR_PIPE_IS_BROKEN |
2672 | # endif | |
e3f494f1 JH |
2673 | # else |
2674 | # ifdef __GLIBC__ | |
2675 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2676 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2677 | # endif | |
2678 | # endif | |
226017aa DD |
2679 | # endif |
2680 | #endif | |
2681 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2682 | /* This loses the possibility to detect the bof | |
2683 | * situation on perl -P when the libc5 is being used. | |
2684 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2685 | */ | |
2686 | if (!PL_preprocess) | |
7e28d3af | 2687 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2688 | #else |
eb160463 | 2689 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2690 | #endif |
7e28d3af | 2691 | if (bof) { |
3280af22 | 2692 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2693 | s = swallow_bom((U8*)s); |
e929a76b | 2694 | } |
378cc40b | 2695 | } |
3280af22 | 2696 | if (PL_doextract) { |
a0d0e21e LW |
2697 | /* Incest with pod. */ |
2698 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2699 | sv_setpv(PL_linestr, ""); |
2700 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2701 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2702 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2703 | PL_doextract = FALSE; |
a0d0e21e | 2704 | } |
4e553d73 | 2705 | } |
463ee0b2 | 2706 | incline(s); |
3280af22 NIS |
2707 | } while (PL_doextract); |
2708 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2709 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2710 | SV *sv = NEWSV(85,0); |
a687059c | 2711 | |
93a17b20 | 2712 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2713 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2714 | (void)SvIOK_on(sv); |
2715 | SvIVX(sv) = 0; | |
57843af0 | 2716 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2717 | } |
3280af22 | 2718 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2719 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2720 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2721 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2722 | s++; |
a0d0e21e | 2723 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2724 | s++; |
44a8e56a | 2725 | d = Nullch; |
3280af22 | 2726 | if (!PL_in_eval) { |
44a8e56a | 2727 | if (*s == '#' && *(s+1) == '!') |
2728 | d = s + 2; | |
2729 | #ifdef ALTERNATE_SHEBANG | |
2730 | else { | |
2731 | static char as[] = ALTERNATE_SHEBANG; | |
2732 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2733 | d = s + (sizeof(as) - 1); | |
2734 | } | |
2735 | #endif /* ALTERNATE_SHEBANG */ | |
2736 | } | |
2737 | if (d) { | |
b8378b72 | 2738 | char *ipath; |
774d564b | 2739 | char *ipathend; |
b8378b72 | 2740 | |
774d564b | 2741 | while (isSPACE(*d)) |
b8378b72 CS |
2742 | d++; |
2743 | ipath = d; | |
774d564b | 2744 | while (*d && !isSPACE(*d)) |
2745 | d++; | |
2746 | ipathend = d; | |
2747 | ||
2748 | #ifdef ARG_ZERO_IS_SCRIPT | |
2749 | if (ipathend > ipath) { | |
2750 | /* | |
2751 | * HP-UX (at least) sets argv[0] to the script name, | |
2752 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2753 | * at least, set argv[0] to the basename of the Perl | |
2754 | * interpreter. So, having found "#!", we'll set it right. | |
2755 | */ | |
ee2f7564 | 2756 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2757 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2758 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2759 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2760 | SvSETMAGIC(x); |
2761 | } | |
556c1dec JH |
2762 | else { |
2763 | STRLEN blen; | |
2764 | STRLEN llen; | |
2765 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2766 | char *lstart = SvPV(x,llen); | |
2767 | if (llen < blen) { | |
2768 | bstart += blen - llen; | |
2769 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2770 | sv_setpvn(x, ipath, ipathend - ipath); | |
2771 | SvSETMAGIC(x); | |
2772 | } | |
2773 | } | |
2774 | } | |
774d564b | 2775 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2776 | } |
774d564b | 2777 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2778 | |
2779 | /* | |
2780 | * Look for options. | |
2781 | */ | |
748a9306 | 2782 | d = instr(s,"perl -"); |
84e30d1a | 2783 | if (!d) { |
748a9306 | 2784 | d = instr(s,"perl"); |
84e30d1a GS |
2785 | #if defined(DOSISH) |
2786 | /* avoid getting into infinite loops when shebang | |
2787 | * line contains "Perl" rather than "perl" */ | |
2788 | if (!d) { | |
2789 | for (d = ipathend-4; d >= ipath; --d) { | |
2790 | if ((*d == 'p' || *d == 'P') | |
2791 | && !ibcmp(d, "perl", 4)) | |
2792 | { | |
2793 | break; | |
2794 | } | |
2795 | } | |
2796 | if (d < ipath) | |
2797 | d = Nullch; | |
2798 | } | |
2799 | #endif | |
2800 | } | |
44a8e56a | 2801 | #ifdef ALTERNATE_SHEBANG |
2802 | /* | |
2803 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2804 | * character that can be part of a Perl expression, then if | |
2805 | * we see it but not "perl", we're probably looking at the | |
2806 | * start of Perl code, not a request to hand off to some | |
2807 | * other interpreter. Similarly, if "perl" is there, but | |
2808 | * not in the first 'word' of the line, we assume the line | |
2809 | * contains the start of the Perl program. | |
44a8e56a | 2810 | */ |
2811 | if (d && *s != '#') { | |
774d564b | 2812 | char *c = ipath; |
44a8e56a | 2813 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2814 | c++; | |
2815 | if (c < d) | |
2816 | d = Nullch; /* "perl" not in first word; ignore */ | |
2817 | else | |
2818 | *s = '#'; /* Don't try to parse shebang line */ | |
2819 | } | |
774d564b | 2820 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2821 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2822 | if (!d && |
44a8e56a | 2823 | *s == '#' && |
774d564b | 2824 | ipathend > ipath && |
3280af22 | 2825 | !PL_minus_c && |
748a9306 | 2826 | !instr(s,"indir") && |
3280af22 | 2827 | instr(PL_origargv[0],"perl")) |
748a9306 | 2828 | { |
9f68db38 | 2829 | char **newargv; |
9f68db38 | 2830 | |
774d564b | 2831 | *ipathend = '\0'; |
2832 | s = ipathend + 1; | |
3280af22 | 2833 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2834 | s++; |
3280af22 NIS |
2835 | if (s < PL_bufend) { |
2836 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2837 | newargv[1] = s; |
3280af22 | 2838 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2839 | s++; |
2840 | *s = '\0'; | |
3280af22 | 2841 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2842 | } |
2843 | else | |
3280af22 | 2844 | newargv = PL_origargv; |
774d564b | 2845 | newargv[0] = ipath; |
b35112e7 | 2846 | PERL_FPU_PRE_EXEC |
b4748376 | 2847 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 2848 | PERL_FPU_POST_EXEC |
cea2e8a9 | 2849 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2850 | } |
bf4acbe4 | 2851 | #endif |
748a9306 | 2852 | if (d) { |
3280af22 NIS |
2853 | U32 oldpdb = PL_perldb; |
2854 | bool oldn = PL_minus_n; | |
2855 | bool oldp = PL_minus_p; | |
748a9306 LW |
2856 | |
2857 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2858 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2859 | |
2860 | if (*d++ == '-') { | |
a11ec5a9 | 2861 | bool switches_done = PL_doswitches; |
8cc95fdb | 2862 | do { |
2863 | if (*d == 'M' || *d == 'm') { | |
2864 | char *m = d; | |
2865 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2866 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2867 | (int)(d - m), m); |
2868 | } | |
2869 | d = moreswitches(d); | |
2870 | } while (d); | |
f0b2cf55 YST |
2871 | if (PL_doswitches && !switches_done) { |
2872 | int argc = PL_origargc; | |
2873 | char **argv = PL_origargv; | |
2874 | do { | |
2875 | argc--,argv++; | |
2876 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2877 | init_argv_symbols(argc,argv); | |
2878 | } | |
155aba94 GS |
2879 | if ((PERLDB_LINE && !oldpdb) || |
2880 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2881 | /* if we have already added "LINE: while (<>) {", |
2882 | we must not do it again */ | |
748a9306 | 2883 | { |
3280af22 NIS |
2884 | sv_setpv(PL_linestr, ""); |
2885 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2886 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2887 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2888 | PL_preambled = FALSE; |
84902520 | 2889 | if (PERLDB_LINE) |
3280af22 | 2890 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2891 | goto retry; |
2892 | } | |
a11ec5a9 RGS |
2893 | if (PL_doswitches && !switches_done) { |
2894 | int argc = PL_origargc; | |
2895 | char **argv = PL_origargv; | |
2896 | do { | |
2897 | argc--,argv++; | |
2898 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2899 | init_argv_symbols(argc,argv); | |
2900 | } | |
a0d0e21e | 2901 | } |
79072805 | 2902 | } |
9f68db38 | 2903 | } |
79072805 | 2904 | } |
3280af22 NIS |
2905 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2906 | PL_bufptr = s; | |
2907 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2908 | return yylex(); |
ae986130 | 2909 | } |
378cc40b | 2910 | goto retry; |
4fdae800 | 2911 | case '\r': |
6a27c188 | 2912 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2913 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2914 | Perl_croak(aTHX_ |
cc507455 | 2915 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2916 | #endif |
4fdae800 | 2917 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2918 | #ifdef MACOS_TRADITIONAL |
2919 | case '\312': | |
2920 | #endif | |
378cc40b LW |
2921 | s++; |
2922 | goto retry; | |
378cc40b | 2923 | case '#': |
e929a76b | 2924 | case '\n': |
3280af22 | 2925 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2926 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2927 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2928 | CopLINE_dec(PL_curcop); | |
2929 | incline(s); | |
2930 | } | |
3280af22 | 2931 | d = PL_bufend; |
a687059c | 2932 | while (s < d && *s != '\n') |
378cc40b | 2933 | s++; |
0f85fab0 | 2934 | if (s < d) |
378cc40b | 2935 | s++; |
78c267c1 | 2936 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2937 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2938 | incline(s); |
3280af22 NIS |
2939 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2940 | PL_bufptr = s; | |
2941 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2942 | return yylex(); |
a687059c | 2943 | } |
378cc40b | 2944 | } |
a687059c | 2945 | else { |
378cc40b | 2946 | *s = '\0'; |
3280af22 | 2947 | PL_bufend = s; |
a687059c | 2948 | } |
378cc40b LW |
2949 | goto retry; |
2950 | case '-': | |
79072805 | 2951 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2952 | I32 ftst = 0; |
2953 | ||
378cc40b | 2954 | s++; |
3280af22 | 2955 | PL_bufptr = s; |
748a9306 LW |
2956 | tmp = *s++; |
2957 | ||
bf4acbe4 | 2958 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2959 | s++; |
2960 | ||
2961 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2962 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2963 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2964 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2965 | } ); |
748a9306 LW |
2966 | OPERATOR('-'); /* unary minus */ |
2967 | } | |
3280af22 | 2968 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2969 | switch (tmp) { |
e5edeb50 JH |
2970 | case 'r': ftst = OP_FTEREAD; break; |
2971 | case 'w': ftst = OP_FTEWRITE; break; | |
2972 | case 'x': ftst = OP_FTEEXEC; break; | |
2973 | case 'o': ftst = OP_FTEOWNED; break; | |
2974 | case 'R': ftst = OP_FTRREAD; break; | |
2975 | case 'W': ftst = OP_FTRWRITE; break; | |
2976 | case 'X': ftst = OP_FTREXEC; break; | |
2977 | case 'O': ftst = OP_FTROWNED; break; | |
2978 | case 'e': ftst = OP_FTIS; break; | |
2979 | case 'z': ftst = OP_FTZERO; break; | |
2980 | case 's': ftst = OP_FTSIZE; break; | |
2981 | case 'f': ftst = OP_FTFILE; break; | |
2982 | case 'd': ftst = OP_FTDIR; break; | |
2983 | case 'l': ftst = OP_FTLINK; break; | |
2984 | case 'p': ftst = OP_FTPIPE; break; | |
2985 | case 'S': ftst = OP_FTSOCK; break; | |
2986 | case 'u': ftst = OP_FTSUID; break; | |
2987 | case 'g': ftst = OP_FTSGID; break; | |
2988 | case 'k': ftst = OP_FTSVTX; break; | |
2989 | case 'b': ftst = OP_FTBLK; break; | |
2990 | case 'c': ftst = OP_FTCHR; break; | |
2991 | case 't': ftst = OP_FTTTY; break; | |
2992 | case 'T': ftst = OP_FTTEXT; break; | |
2993 | case 'B': ftst = OP_FTBINARY; break; | |
2994 | case 'M': case 'A': case 'C': | |
2995 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2996 | switch (tmp) { | |
2997 | case 'M': ftst = OP_FTMTIME; break; | |
2998 | case 'A': ftst = OP_FTATIME; break; | |
2999 | case 'C': ftst = OP_FTCTIME; break; | |
3000 | default: break; | |
3001 | } | |
3002 | break; | |
378cc40b | 3003 | default: |
378cc40b LW |
3004 | break; |
3005 | } | |
e5edeb50 | 3006 | if (ftst) { |
eb160463 | 3007 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 3008 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 3009 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 3010 | } ); |
e5edeb50 JH |
3011 | FTST(ftst); |
3012 | } | |
3013 | else { | |
3014 | /* Assume it was a minus followed by a one-letter named | |
3015 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 3016 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 | 3017 | "### '-%c' looked like a file test but was not\n", |
4fccd7c6 | 3018 | (int) tmp); |
5f80b19c | 3019 | } ); |
3cf7b4c4 | 3020 | s = --PL_bufptr; |
e5edeb50 | 3021 | } |
378cc40b | 3022 | } |
a687059c LW |
3023 | tmp = *s++; |
3024 | if (*s == tmp) { | |
3025 | s++; | |
3280af22 | 3026 | if (PL_expect == XOPERATOR) |
79072805 LW |
3027 | TERM(POSTDEC); |
3028 | else | |
3029 | OPERATOR(PREDEC); | |
3030 | } | |
3031 | else if (*s == '>') { | |
3032 | s++; | |
3033 | s = skipspace(s); | |
7e2040f0 | 3034 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 3035 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 3036 | TOKEN(ARROW); |
79072805 | 3037 | } |
748a9306 LW |
3038 | else if (*s == '$') |
3039 | OPERATOR(ARROW); | |
463ee0b2 | 3040 | else |
748a9306 | 3041 | TERM(ARROW); |
a687059c | 3042 | } |
3280af22 | 3043 | if (PL_expect == XOPERATOR) |
79072805 LW |
3044 | Aop(OP_SUBTRACT); |
3045 | else { | |
3280af22 | 3046 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3047 | check_uni(); |
79072805 | 3048 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 3049 | } |
79072805 | 3050 | |
378cc40b | 3051 | case '+': |
a687059c LW |
3052 | tmp = *s++; |
3053 | if (*s == tmp) { | |
378cc40b | 3054 | s++; |
3280af22 | 3055 | if (PL_expect == XOPERATOR) |
79072805 LW |
3056 | TERM(POSTINC); |
3057 | else | |
3058 | OPERATOR(PREINC); | |
378cc40b | 3059 | } |
3280af22 | 3060 | if (PL_expect == XOPERATOR) |
79072805 LW |
3061 | Aop(OP_ADD); |
3062 | else { | |
3280af22 | 3063 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3064 | check_uni(); |
a687059c | 3065 | OPERATOR('+'); |
2f3197b3 | 3066 | } |
a687059c | 3067 | |
378cc40b | 3068 | case '*': |
3280af22 NIS |
3069 | if (PL_expect != XOPERATOR) { |
3070 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
3071 | PL_expect = XOPERATOR; | |
3072 | force_ident(PL_tokenbuf, '*'); | |
3073 | if (!*PL_tokenbuf) | |
a0d0e21e | 3074 | PREREF('*'); |
79072805 | 3075 | TERM('*'); |
a687059c | 3076 | } |
79072805 LW |
3077 | s++; |
3078 | if (*s == '*') { | |
a687059c | 3079 | s++; |
79072805 | 3080 | PWop(OP_POW); |
a687059c | 3081 | } |
79072805 LW |
3082 | Mop(OP_MULTIPLY); |
3083 | ||
378cc40b | 3084 | case '%': |
3280af22 | 3085 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 3086 | ++s; |
3087 | Mop(OP_MODULO); | |
a687059c | 3088 | } |
3280af22 NIS |
3089 | PL_tokenbuf[0] = '%'; |
3090 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
3091 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3092 | PREREF('%'); |
a687059c | 3093 | } |
3280af22 | 3094 | PL_pending_ident = '%'; |
bbce6d69 | 3095 | TERM('%'); |
a687059c | 3096 | |
378cc40b | 3097 | case '^': |
79072805 | 3098 | s++; |
a0d0e21e | 3099 | BOop(OP_BIT_XOR); |
79072805 | 3100 | case '[': |
3280af22 | 3101 | PL_lex_brackets++; |
79072805 | 3102 | /* FALL THROUGH */ |
378cc40b | 3103 | case '~': |
378cc40b | 3104 | case ',': |
378cc40b LW |
3105 | tmp = *s++; |
3106 | OPERATOR(tmp); | |
a0d0e21e LW |
3107 | case ':': |
3108 | if (s[1] == ':') { | |
3109 | len = 0; | |
3110 | goto just_a_word; | |
3111 | } | |
3112 | s++; | |
09bef843 SB |
3113 | switch (PL_expect) { |
3114 | OP *attrs; | |
3115 | case XOPERATOR: | |
3116 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
3117 | break; | |
3118 | PL_bufptr = s; /* update in case we back off */ | |
3119 | goto grabattrs; | |
3120 | case XATTRBLOCK: | |
3121 | PL_expect = XBLOCK; | |
3122 | goto grabattrs; | |
3123 | case XATTRTERM: | |
3124 | PL_expect = XTERMBLOCK; | |
3125 | grabattrs: | |
3126 | s = skipspace(s); | |
3127 | attrs = Nullop; | |
7e2040f0 | 3128 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 3129 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
3130 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
3131 | if (tmp < 0) tmp = -tmp; | |
3132 | switch (tmp) { | |
3133 | case KEY_or: | |
3134 | case KEY_and: | |
c963b151 | 3135 | case KEY_err: |
f9829d6b GS |
3136 | case KEY_for: |
3137 | case KEY_unless: | |
3138 | case KEY_if: | |
3139 | case KEY_while: | |
3140 | case KEY_until: | |
3141 | goto got_attrs; | |
3142 | default: | |
3143 | break; | |
3144 | } | |
3145 | } | |
09bef843 SB |
3146 | if (*d == '(') { |
3147 | d = scan_str(d,TRUE,TRUE); | |
3148 | if (!d) { | |
09bef843 SB |
3149 | /* MUST advance bufptr here to avoid bogus |
3150 | "at end of line" context messages from yyerror(). | |
3151 | */ | |
3152 | PL_bufptr = s + len; | |
3153 | yyerror("Unterminated attribute parameter in attribute list"); | |
3154 | if (attrs) | |
3155 | op_free(attrs); | |
bbf60fe6 | 3156 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
3157 | } |
3158 | } | |
3159 | if (PL_lex_stuff) { | |
3160 | SV *sv = newSVpvn(s, len); | |
3161 | sv_catsv(sv, PL_lex_stuff); | |
3162 | attrs = append_elem(OP_LIST, attrs, | |
3163 | newSVOP(OP_CONST, 0, sv)); | |
3164 | SvREFCNT_dec(PL_lex_stuff); | |
3165 | PL_lex_stuff = Nullsv; | |
3166 | } | |
3167 | else { | |
371fce9b DM |
3168 | if (len == 6 && strnEQ(s, "unique", len)) { |
3169 | if (PL_in_my == KEY_our) | |
3170 | #ifdef USE_ITHREADS | |
3171 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); | |
3172 | #else | |
3173 | ; /* skip to avoid loading attributes.pm */ | |
3174 | #endif | |
3175 | else | |
3176 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); | |
3177 | } | |
3178 | ||
d3cea301 SB |
3179 | /* NOTE: any CV attrs applied here need to be part of |
3180 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
371fce9b | 3181 | else if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
78f9721b SM |
3182 | CvLVALUE_on(PL_compcv); |
3183 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3184 | CvLOCKED_on(PL_compcv); | |
3185 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3186 | CvMETHOD_on(PL_compcv); | |
06492da6 SF |
3187 | else if (!PL_in_my && len == 9 && strnEQ(s, "assertion", len)) |
3188 | CvASSERTION_on(PL_compcv); | |
78f9721b SM |
3189 | /* After we've set the flags, it could be argued that |
3190 | we don't need to do the attributes.pm-based setting | |
3191 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3192 | flags. To experiment with that, uncomment the |
3193 | following "else". (Note that's already been | |
3194 | uncommented. That keeps the above-applied built-in | |
3195 | attributes from being intercepted (and possibly | |
3196 | rejected) by a package's attribute routines, but is | |
3197 | justified by the performance win for the common case | |
3198 | of applying only built-in attributes.) */ | |
0256094b | 3199 | else |
78f9721b SM |
3200 | attrs = append_elem(OP_LIST, attrs, |
3201 | newSVOP(OP_CONST, 0, | |
3202 | newSVpvn(s, len))); | |
09bef843 SB |
3203 | } |
3204 | s = skipspace(d); | |
0120eecf | 3205 | if (*s == ':' && s[1] != ':') |
09bef843 | 3206 | s = skipspace(s+1); |
0120eecf GS |
3207 | else if (s == d) |
3208 | break; /* require real whitespace or :'s */ | |
09bef843 | 3209 | } |
f9829d6b | 3210 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3211 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3212 | char q = ((*s == '\'') ? '"' : '\''); |
3213 | /* If here for an expression, and parsed no attrs, back off. */ | |
3214 | if (tmp == '=' && !attrs) { | |
3215 | s = PL_bufptr; | |
3216 | break; | |
3217 | } | |
3218 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3219 | context messages from yyerror(). | |
3220 | */ | |
3221 | PL_bufptr = s; | |
3222 | if (!*s) | |
3223 | yyerror("Unterminated attribute list"); | |
3224 | else | |
3225 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3226 | q, *s, q)); | |
3227 | if (attrs) | |
3228 | op_free(attrs); | |
3229 | OPERATOR(':'); | |
3230 | } | |
f9829d6b | 3231 | got_attrs: |
09bef843 SB |
3232 | if (attrs) { |
3233 | PL_nextval[PL_nexttoke].opval = attrs; | |
3234 | force_next(THING); | |
3235 | } | |
3236 | TOKEN(COLONATTR); | |
3237 | } | |
a0d0e21e | 3238 | OPERATOR(':'); |
8990e307 LW |
3239 | case '(': |
3240 | s++; | |
3280af22 NIS |
3241 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3242 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3243 | else |
3280af22 | 3244 | PL_expect = XTERM; |
4a202259 | 3245 | s = skipspace(s); |
a0d0e21e | 3246 | TOKEN('('); |
378cc40b | 3247 | case ';': |
f4dd75d9 | 3248 | CLINE; |
378cc40b LW |
3249 | tmp = *s++; |
3250 | OPERATOR(tmp); | |
3251 | case ')': | |
378cc40b | 3252 | tmp = *s++; |
16d20bd9 AD |
3253 | s = skipspace(s); |
3254 | if (*s == '{') | |
3255 | PREBLOCK(tmp); | |
378cc40b | 3256 | TERM(tmp); |
79072805 LW |
3257 | case ']': |
3258 | s++; | |
3280af22 | 3259 | if (PL_lex_brackets <= 0) |
d98d5fff | 3260 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3261 | else |
3280af22 NIS |
3262 | --PL_lex_brackets; |
3263 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3264 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3265 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3266 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3267 | } |
3268 | } | |
4633a7c4 | 3269 | TERM(']'); |
79072805 LW |
3270 | case '{': |
3271 | leftbracket: | |
79072805 | 3272 | s++; |
3280af22 | 3273 | if (PL_lex_brackets > 100) { |
8edd5f42 | 3274 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 3275 | } |
3280af22 | 3276 | switch (PL_expect) { |
a0d0e21e | 3277 | case XTERM: |
3280af22 | 3278 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3279 | s--; |
3280 | PRETERMBLOCK(DO); | |
3281 | } | |
3280af22 NIS |
3282 | if (PL_oldoldbufptr == PL_last_lop) |
3283 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3284 | else |
3280af22 | 3285 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3286 | OPERATOR(HASHBRACK); |
a0d0e21e | 3287 | case XOPERATOR: |
bf4acbe4 | 3288 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3289 | s++; |
44a8e56a | 3290 | d = s; |
3280af22 NIS |
3291 | PL_tokenbuf[0] = '\0'; |
3292 | if (d < PL_bufend && *d == '-') { | |
3293 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3294 | d++; |
bf4acbe4 | 3295 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3296 | d++; |
3297 | } | |
7e2040f0 | 3298 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3299 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3300 | FALSE, &len); |
bf4acbe4 | 3301 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3302 | d++; |
3303 | if (*d == '}') { | |
3280af22 | 3304 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3305 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3306 | if (minus) | |
3307 | force_next('-'); | |
748a9306 LW |
3308 | } |
3309 | } | |
3310 | /* FALL THROUGH */ | |
09bef843 | 3311 | case XATTRBLOCK: |
748a9306 | 3312 | case XBLOCK: |
3280af22 NIS |
3313 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3314 | PL_expect = XSTATE; | |
a0d0e21e | 3315 | break; |
09bef843 | 3316 | case XATTRTERM: |
a0d0e21e | 3317 | case XTERMBLOCK: |
3280af22 NIS |
3318 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3319 | PL_expect = XSTATE; | |
a0d0e21e LW |
3320 | break; |
3321 | default: { | |
3322 | char *t; | |
3280af22 NIS |
3323 | if (PL_oldoldbufptr == PL_last_lop) |
3324 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3325 | else |
3280af22 | 3326 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3327 | s = skipspace(s); |
8452ff4b SB |
3328 | if (*s == '}') { |
3329 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3330 | PL_expect = XTERM; | |
3331 | /* This hack is to get the ${} in the message. */ | |
3332 | PL_bufptr = s+1; | |
3333 | yyerror("syntax error"); | |
3334 | break; | |
3335 | } | |
a0d0e21e | 3336 | OPERATOR(HASHBRACK); |
8452ff4b | 3337 | } |
b8a4b1be GS |
3338 | /* This hack serves to disambiguate a pair of curlies |
3339 | * as being a block or an anon hash. Normally, expectation | |
3340 | * determines that, but in cases where we're not in a | |
3341 | * position to expect anything in particular (like inside | |
3342 | * eval"") we have to resolve the ambiguity. This code | |
3343 | * covers the case where the first term in the curlies is a | |
3344 | * quoted string. Most other cases need to be explicitly | |
3345 | * disambiguated by prepending a `+' before the opening | |
3346 | * curly in order to force resolution as an anon hash. | |
3347 | * | |
3348 | * XXX should probably propagate the outer expectation | |
3349 | * into eval"" to rely less on this hack, but that could | |
3350 | * potentially break current behavior of eval"". | |
3351 | * GSAR 97-07-21 | |
3352 | */ | |
3353 | t = s; | |
3354 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3355 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3356 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3357 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3358 | t++; | |
3359 | t++; | |
a0d0e21e | 3360 | } |
b8a4b1be | 3361 | else if (*s == 'q') { |
3280af22 | 3362 | if (++t < PL_bufend |
b8a4b1be | 3363 | && (!isALNUM(*t) |
3280af22 | 3364 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3365 | && !isALNUM(*t)))) |
3366 | { | |
abc667d1 | 3367 | /* skip q//-like construct */ |
b8a4b1be GS |
3368 | char *tmps; |
3369 | char open, close, term; | |
3370 | I32 brackets = 1; | |
3371 | ||
3280af22 | 3372 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 3373 | t++; |
abc667d1 DM |
3374 | /* check for q => */ |
3375 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
3376 | OPERATOR(HASHBRACK); | |
3377 | } | |
b8a4b1be GS |
3378 | term = *t; |
3379 | open = term; | |
3380 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3381 | term = tmps[5]; | |
3382 | close = term; | |
3383 | if (open == close) | |
3280af22 NIS |
3384 | for (t++; t < PL_bufend; t++) { |
3385 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3386 | t++; |
6d07e5e9 | 3387 | else if (*t == open) |
b8a4b1be GS |
3388 | break; |
3389 | } | |
abc667d1 | 3390 | else { |
3280af22 NIS |
3391 | for (t++; t < PL_bufend; t++) { |
3392 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3393 | t++; |
6d07e5e9 | 3394 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3395 | break; |
3396 | else if (*t == open) | |
3397 | brackets++; | |
3398 | } | |
abc667d1 DM |
3399 | } |
3400 | t++; | |
b8a4b1be | 3401 | } |
abc667d1 DM |
3402 | else |
3403 | /* skip plain q word */ | |
3404 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
3405 | t += UTF8SKIP(t); | |
a0d0e21e | 3406 | } |
7e2040f0 | 3407 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3408 | t += UTF8SKIP(t); |
7e2040f0 | 3409 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3410 | t += UTF8SKIP(t); |
a0d0e21e | 3411 | } |
3280af22 | 3412 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3413 | t++; |
b8a4b1be GS |
3414 | /* if comma follows first term, call it an anon hash */ |
3415 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3416 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3417 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3418 | OPERATOR(HASHBRACK); |
3280af22 | 3419 | if (PL_expect == XREF) |
4e4e412b | 3420 | PL_expect = XTERM; |
a0d0e21e | 3421 | else { |
3280af22 NIS |
3422 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3423 | PL_expect = XSTATE; | |
a0d0e21e | 3424 | } |
8990e307 | 3425 | } |
a0d0e21e | 3426 | break; |
463ee0b2 | 3427 | } |
57843af0 | 3428 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3429 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3430 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3431 | TOKEN('{'); |
378cc40b | 3432 | case '}': |
79072805 LW |
3433 | rightbracket: |
3434 | s++; | |
3280af22 | 3435 | if (PL_lex_brackets <= 0) |
d98d5fff | 3436 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3437 | else |
3280af22 | 3438 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3439 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3440 | PL_lex_formbrack = 0; |
3441 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3442 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3443 | if (PL_expect & XFAKEBRACK) { |
3444 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3445 | PL_lex_state = LEX_INTERPEND; |
3446 | PL_bufptr = s; | |
cea2e8a9 | 3447 | return yylex(); /* ignore fake brackets */ |
79072805 | 3448 | } |
fa83b5b6 | 3449 | if (*s == '-' && s[1] == '>') |
3280af22 | 3450 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3451 | else if (*s != '[' && *s != '{') |
3280af22 | 3452 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3453 | } |
3454 | } | |
9059aa12 LW |
3455 | if (PL_expect & XFAKEBRACK) { |
3456 | PL_expect &= XENUMMASK; | |
3280af22 | 3457 | PL_bufptr = s; |
cea2e8a9 | 3458 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3459 | } |
79072805 LW |
3460 | force_next('}'); |
3461 | TOKEN(';'); | |
378cc40b LW |
3462 | case '&': |
3463 | s++; | |
3464 | tmp = *s++; | |
3465 | if (tmp == '&') | |
a0d0e21e | 3466 | AOPERATOR(ANDAND); |
378cc40b | 3467 | s--; |
3280af22 | 3468 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3469 | if (ckWARN(WARN_SEMICOLON) |
3470 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3471 | { | |
57843af0 | 3472 | CopLINE_dec(PL_curcop); |
9014280d | 3473 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3474 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3475 | } |
79072805 | 3476 | BAop(OP_BIT_AND); |
463ee0b2 | 3477 | } |
79072805 | 3478 | |
3280af22 NIS |
3479 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3480 | if (*PL_tokenbuf) { | |
3481 | PL_expect = XOPERATOR; | |
3482 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3483 | } |
79072805 LW |
3484 | else |
3485 | PREREF('&'); | |
c07a80fd | 3486 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3487 | TERM('&'); |
3488 | ||
378cc40b LW |
3489 | case '|': |
3490 | s++; | |
3491 | tmp = *s++; | |
3492 | if (tmp == '|') | |
a0d0e21e | 3493 | AOPERATOR(OROR); |
378cc40b | 3494 | s--; |
79072805 | 3495 | BOop(OP_BIT_OR); |
378cc40b LW |
3496 | case '=': |
3497 | s++; | |
3498 | tmp = *s++; | |
3499 | if (tmp == '=') | |
79072805 LW |
3500 | Eop(OP_EQ); |
3501 | if (tmp == '>') | |
3502 | OPERATOR(','); | |
378cc40b | 3503 | if (tmp == '~') |
79072805 | 3504 | PMop(OP_MATCH); |
599cee73 | 3505 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3506 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3507 | s--; |
3280af22 NIS |
3508 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3509 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3510 | { |
3280af22 NIS |
3511 | if (PL_in_eval && !PL_rsfp) { |
3512 | d = PL_bufend; | |
a5f75d66 AD |
3513 | while (s < d) { |
3514 | if (*s++ == '\n') { | |
3515 | incline(s); | |
3516 | if (strnEQ(s,"=cut",4)) { | |
3517 | s = strchr(s,'\n'); | |
3518 | if (s) | |
3519 | s++; | |
3520 | else | |
3521 | s = d; | |
3522 | incline(s); | |
3523 | goto retry; | |
3524 | } | |
3525 | } | |
3526 | } | |
3527 | goto retry; | |
3528 | } | |
3280af22 NIS |
3529 | s = PL_bufend; |
3530 | PL_doextract = TRUE; | |
a0d0e21e LW |
3531 | goto retry; |
3532 | } | |
3280af22 | 3533 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3534 | char *t; |
51882d45 | 3535 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3536 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3537 | #else |
bf4acbe4 | 3538 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3539 | #endif |
a0d0e21e LW |
3540 | if (*t == '\n' || *t == '#') { |
3541 | s--; | |
3280af22 | 3542 | PL_expect = XBLOCK; |
a0d0e21e LW |
3543 | goto leftbracket; |
3544 | } | |
79072805 | 3545 | } |
a0d0e21e LW |
3546 | yylval.ival = 0; |
3547 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3548 | case '!': |
3549 | s++; | |
3550 | tmp = *s++; | |
984200d0 | 3551 | if (tmp == '=') { |
decca21c YST |
3552 | /* was this !=~ where !~ was meant? |
3553 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
3554 | ||
984200d0 YST |
3555 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { |
3556 | char *t = s+1; | |
3557 | ||
3558 | while (t < PL_bufend && isSPACE(*t)) | |
3559 | ++t; | |
3560 | ||
decca21c YST |
3561 | if (*t == '/' || *t == '?' || |
3562 | ((*t == 'm' || *t == 's' || *t == 'y') && !isALNUM(t[1])) || | |
3563 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
984200d0 YST |
3564 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
3565 | "!=~ should be !~"); | |
3566 | } | |
79072805 | 3567 | Eop(OP_NE); |
984200d0 | 3568 | } |
378cc40b | 3569 | if (tmp == '~') |
79072805 | 3570 | PMop(OP_NOT); |
378cc40b LW |
3571 | s--; |
3572 | OPERATOR('!'); | |
3573 | case '<': | |
3280af22 | 3574 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3575 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3576 | check_uni(); |
79072805 LW |
3577 | if (s[1] == '<') |
3578 | s = scan_heredoc(s); | |
3579 | else | |
3580 | s = scan_inputsymbol(s); | |
3581 | TERM(sublex_start()); | |
378cc40b LW |
3582 | } |
3583 | s++; | |
3584 | tmp = *s++; | |
3585 | if (tmp == '<') | |
79072805 | 3586 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3587 | if (tmp == '=') { |
3588 | tmp = *s++; | |
3589 | if (tmp == '>') | |
79072805 | 3590 | Eop(OP_NCMP); |
395c3793 | 3591 | s--; |
79072805 | 3592 | Rop(OP_LE); |
395c3793 | 3593 | } |
378cc40b | 3594 | s--; |
79072805 | 3595 | Rop(OP_LT); |
378cc40b LW |
3596 | case '>': |
3597 | s++; | |
3598 | tmp = *s++; | |
3599 | if (tmp == '>') | |
79072805 | 3600 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3601 | if (tmp == '=') |
79072805 | 3602 | Rop(OP_GE); |
378cc40b | 3603 | s--; |
79072805 | 3604 | Rop(OP_GT); |
378cc40b LW |
3605 | |
3606 | case '$': | |
bbce6d69 | 3607 | CLINE; |
3608 | ||
3280af22 NIS |
3609 | if (PL_expect == XOPERATOR) { |
3610 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3611 | PL_expect = XTERM; | |
a0d0e21e | 3612 | depcom(); |
bbf60fe6 | 3613 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3614 | } |
8990e307 | 3615 | } |
a0d0e21e | 3616 | |
7e2040f0 | 3617 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3618 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3619 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3620 | sizeof PL_tokenbuf - 1, FALSE); | |
3621 | if (PL_expect == XOPERATOR) | |
3622 | no_op("Array length", s); | |
3280af22 | 3623 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3624 | PREREF(DOLSHARP); |
3280af22 NIS |
3625 | PL_expect = XOPERATOR; |
3626 | PL_pending_ident = '#'; | |
463ee0b2 | 3627 | TOKEN(DOLSHARP); |
79072805 | 3628 | } |
bbce6d69 | 3629 | |
3280af22 | 3630 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3631 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3632 | sizeof PL_tokenbuf - 1, FALSE); | |
3633 | if (PL_expect == XOPERATOR) | |
3634 | no_op("Scalar", s); | |
3280af22 NIS |
3635 | if (!PL_tokenbuf[1]) { |
3636 | if (s == PL_bufend) | |
bbce6d69 | 3637 | yyerror("Final $ should be \\$ or $name"); |
3638 | PREREF('$'); | |
8990e307 | 3639 | } |
a0d0e21e | 3640 | |
bbce6d69 | 3641 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3642 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3643 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3644 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3645 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3646 | TERM(THING); | |
3647 | } | |
3648 | ||
ff68c719 | 3649 | d = s; |
69d2bceb | 3650 | tmp = (I32)*s; |
3280af22 | 3651 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3652 | s = skipspace(s); |
3653 | ||
3280af22 | 3654 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3655 | char *t; |
3656 | if (*s == '[') { | |
3280af22 | 3657 | PL_tokenbuf[0] = '@'; |
599cee73 | 3658 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3659 | for(t = s + 1; |
7e2040f0 | 3660 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3661 | t++) ; |
a0d0e21e | 3662 | if (*t++ == ',') { |
3280af22 NIS |
3663 | PL_bufptr = skipspace(PL_bufptr); |
3664 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3665 | t++; |
9014280d | 3666 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3667 | "Multidimensional syntax %.*s not supported", |
3668 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3669 | } |
3670 | } | |
bbce6d69 | 3671 | } |
3672 | else if (*s == '{') { | |
3280af22 | 3673 | PL_tokenbuf[0] = '%'; |
599cee73 | 3674 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3675 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3676 | { | |
3280af22 | 3677 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3678 | STRLEN len; |
3679 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3680 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3681 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3682 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3683 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3684 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3685 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3686 | } |
93a17b20 LW |
3687 | } |
3688 | } | |
2f3197b3 | 3689 | } |
bbce6d69 | 3690 | |
3280af22 | 3691 | PL_expect = XOPERATOR; |
69d2bceb | 3692 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3693 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3694 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3695 | PL_expect = XOPERATOR; | |
bbce6d69 | 3696 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3697 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3698 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3699 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3700 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3701 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3702 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3703 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3704 | /* binary operators exclude handle interpretations */ |
3705 | switch (tmp) { | |
3706 | case -KEY_x: | |
3707 | case -KEY_eq: | |
3708 | case -KEY_ne: | |
3709 | case -KEY_gt: | |
3710 | case -KEY_lt: | |
3711 | case -KEY_ge: | |
3712 | case -KEY_le: | |
3713 | case -KEY_cmp: | |
3714 | break; | |
3715 | default: | |
3280af22 | 3716 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3717 | break; |
3718 | } | |
3719 | } | |
68dc0745 | 3720 | else { |
8a8635f0 | 3721 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3722 | } |
93a17b20 | 3723 | } |
bbce6d69 | 3724 | else if (isDIGIT(*s)) |
3280af22 | 3725 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3726 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3727 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
3792a11b NC |
3728 | else if ((*s == '?' || *s == '-' || *s == '+') |
3729 | && !isSPACE(s[1]) && s[1] != '=') | |
c963b151 | 3730 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
7ce6e6b9 RGS |
3731 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' && s[1] != '/') |
3732 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
3733 | XXX except DORDOR operator */ | |
e0587a03 | 3734 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3735 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3736 | } |
3280af22 | 3737 | PL_pending_ident = '$'; |
79072805 | 3738 | TOKEN('$'); |
378cc40b LW |
3739 | |
3740 | case '@': | |
3280af22 | 3741 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3742 | no_op("Array", s); |
3280af22 NIS |
3743 | PL_tokenbuf[0] = '@'; |
3744 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3745 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3746 | PREREF('@'); |
3747 | } | |
3280af22 | 3748 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3749 | s = skipspace(s); |
3280af22 | 3750 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3751 | if (*s == '{') |
3280af22 | 3752 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3753 | |
3754 | /* Warn about @ where they meant $. */ | |
599cee73 | 3755 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3756 | if (*s == '[' || *s == '{') { |
3757 | char *t = s + 1; | |
7e2040f0 | 3758 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3759 | t++; |
3760 | if (*t == '}' || *t == ']') { | |
3761 | t++; | |
3280af22 | 3762 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3763 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3764 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3765 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3766 | } |
93a17b20 LW |
3767 | } |
3768 | } | |
463ee0b2 | 3769 | } |
3280af22 | 3770 | PL_pending_ident = '@'; |
79072805 | 3771 | TERM('@'); |
378cc40b | 3772 | |
c963b151 | 3773 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 RGS |
3774 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
3775 | s += 2; | |
3776 | AOPERATOR(DORDOR); | |
3777 | } | |
c963b151 BD |
3778 | case '?': /* may either be conditional or pattern */ |
3779 | if(PL_expect == XOPERATOR) { | |
3780 | tmp = *s++; | |
3781 | if(tmp == '?') { | |
3782 | OPERATOR('?'); | |
3783 | } | |
3784 | else { | |
3785 | tmp = *s++; | |
3786 | if(tmp == '/') { | |
3787 | /* A // operator. */ | |
3788 | AOPERATOR(DORDOR); | |
3789 | } | |
3790 | else { | |
3791 | s--; | |
3792 | Mop(OP_DIVIDE); | |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | else { | |
3797 | /* Disable warning on "study /blah/" */ | |
3798 | if (PL_oldoldbufptr == PL_last_uni | |
3799 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3800 | || memNE(PL_last_uni, "study", 5) | |
3801 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3802 | )) | |
3803 | check_uni(); | |
3804 | s = scan_pat(s,OP_MATCH); | |
3805 | TERM(sublex_start()); | |
3806 | } | |
378cc40b LW |
3807 | |
3808 | case '.': | |
51882d45 GS |
3809 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3810 | #ifdef PERL_STRICT_CR | |
3811 | && s[1] == '\n' | |
3812 | #else | |
3813 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3814 | #endif | |
3815 | && (s == PL_linestart || s[-1] == '\n') ) | |
3816 | { | |
3280af22 NIS |
3817 | PL_lex_formbrack = 0; |
3818 | PL_expect = XSTATE; | |
79072805 LW |
3819 | goto rightbracket; |
3820 | } | |
3280af22 | 3821 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3822 | tmp = *s++; |
a687059c LW |
3823 | if (*s == tmp) { |
3824 | s++; | |
2f3197b3 LW |
3825 | if (*s == tmp) { |
3826 | s++; | |
79072805 | 3827 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3828 | } |
3829 | else | |
79072805 | 3830 | yylval.ival = 0; |
378cc40b | 3831 | OPERATOR(DOTDOT); |
a687059c | 3832 | } |
3280af22 | 3833 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3834 | check_uni(); |
79072805 | 3835 | Aop(OP_CONCAT); |
378cc40b LW |
3836 | } |
3837 | /* FALL THROUGH */ | |
3838 | case '0': case '1': case '2': case '3': case '4': | |
3839 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3840 | s = scan_num(s, &yylval); |
4e553d73 | 3841 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3842 | "### Saw number in '%s'\n", s); |
5f80b19c | 3843 | } ); |
3280af22 | 3844 | if (PL_expect == XOPERATOR) |
8990e307 | 3845 | no_op("Number",s); |
79072805 LW |
3846 | TERM(THING); |
3847 | ||
3848 | case '\'': | |
09bef843 | 3849 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3850 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3851 | "### Saw string before '%s'\n", s); |
5f80b19c | 3852 | } ); |
3280af22 NIS |
3853 | if (PL_expect == XOPERATOR) { |
3854 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3855 | PL_expect = XTERM; | |
a0d0e21e | 3856 | depcom(); |
bbf60fe6 | 3857 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3858 | } |
463ee0b2 | 3859 | else |
8990e307 | 3860 | no_op("String",s); |
463ee0b2 | 3861 | } |
79072805 | 3862 | if (!s) |
85e6fe83 | 3863 | missingterm((char*)0); |
79072805 LW |
3864 | yylval.ival = OP_CONST; |
3865 | TERM(sublex_start()); | |
3866 | ||
3867 | case '"': | |
09bef843 | 3868 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3869 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3870 | "### Saw string before '%s'\n", s); |
5f80b19c | 3871 | } ); |
3280af22 NIS |
3872 | if (PL_expect == XOPERATOR) { |
3873 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3874 | PL_expect = XTERM; | |
a0d0e21e | 3875 | depcom(); |
bbf60fe6 | 3876 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3877 | } |
463ee0b2 | 3878 | else |
8990e307 | 3879 | no_op("String",s); |
463ee0b2 | 3880 | } |
79072805 | 3881 | if (!s) |
85e6fe83 | 3882 | missingterm((char*)0); |
4633a7c4 | 3883 | yylval.ival = OP_CONST; |
3280af22 | 3884 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3885 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3886 | yylval.ival = OP_STRINGIFY; |
3887 | break; | |
3888 | } | |
3889 | } | |
79072805 LW |
3890 | TERM(sublex_start()); |
3891 | ||
3892 | case '`': | |
09bef843 | 3893 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3894 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3895 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3896 | } ); |
3280af22 | 3897 | if (PL_expect == XOPERATOR) |
8990e307 | 3898 | no_op("Backticks",s); |
79072805 | 3899 | if (!s) |
85e6fe83 | 3900 | missingterm((char*)0); |
79072805 LW |
3901 | yylval.ival = OP_BACKTICK; |
3902 | set_csh(); | |
3903 | TERM(sublex_start()); | |
3904 | ||
3905 | case '\\': | |
3906 | s++; | |
599cee73 | 3907 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3908 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3909 | *s, *s); |
3280af22 | 3910 | if (PL_expect == XOPERATOR) |
8990e307 | 3911 | no_op("Backslash",s); |
79072805 LW |
3912 | OPERATOR(REFGEN); |
3913 | ||
a7cb1f99 | 3914 | case 'v': |
e526c9e6 | 3915 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3916 | char *start = s; |
3917 | start++; | |
3918 | start++; | |
dd629d5b | 3919 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3920 | start++; |
3921 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3922 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3923 | TERM(THING); |
3924 | } | |
e526c9e6 | 3925 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
3926 | else if (!isALPHA(*start) && (PL_expect == XTERM |
3927 | || PL_expect == XREF || PL_expect == XSTATE | |
3928 | || PL_expect == XTERMORDORDOR)) { | |
e526c9e6 GS |
3929 | char c = *start; |
3930 | GV *gv; | |
3931 | *start = '\0'; | |
3932 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3933 | *start = c; | |
3934 | if (!gv) { | |
b73d6f50 | 3935 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3936 | TERM(THING); |
3937 | } | |
3938 | } | |
a7cb1f99 GS |
3939 | } |
3940 | goto keylookup; | |
79072805 | 3941 | case 'x': |
3280af22 | 3942 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3943 | s++; |
3944 | Mop(OP_REPEAT); | |
2f3197b3 | 3945 | } |
79072805 LW |
3946 | goto keylookup; |
3947 | ||
378cc40b | 3948 | case '_': |
79072805 LW |
3949 | case 'a': case 'A': |
3950 | case 'b': case 'B': | |
3951 | case 'c': case 'C': | |
3952 | case 'd': case 'D': | |
3953 | case 'e': case 'E': | |
3954 | case 'f': case 'F': | |
3955 | case 'g': case 'G': | |
3956 | case 'h': case 'H': | |
3957 | case 'i': case 'I': | |
3958 | case 'j': case 'J': | |
3959 | case 'k': case 'K': | |
3960 | case 'l': case 'L': | |
3961 | case 'm': case 'M': | |
3962 | case 'n': case 'N': | |
3963 | case 'o': case 'O': | |
3964 | case 'p': case 'P': | |
3965 | case 'q': case 'Q': | |
3966 | case 'r': case 'R': | |
3967 | case 's': case 'S': | |
3968 | case 't': case 'T': | |
3969 | case 'u': case 'U': | |
a7cb1f99 | 3970 | case 'V': |
79072805 LW |
3971 | case 'w': case 'W': |
3972 | case 'X': | |
3973 | case 'y': case 'Y': | |
3974 | case 'z': case 'Z': | |
3975 | ||
49dc05e3 | 3976 | keylookup: { |
1d239bbb | 3977 | orig_keyword = 0; |
161b471a NIS |
3978 | gv = Nullgv; |
3979 | gvp = 0; | |
49dc05e3 | 3980 | |
3280af22 NIS |
3981 | PL_bufptr = s; |
3982 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3983 | |
3984 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3985 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3986 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3987 | (PL_tokenbuf[0] == 'q' && | |
3988 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3989 | |
3990 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3991 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3992 | goto just_a_word; |
3993 | ||
3643fb5f | 3994 | d = s; |
3280af22 | 3995 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3996 | d++; /* no comments skipped here, or s### is misparsed */ |
3997 | ||
3998 | /* Is this a label? */ | |
3280af22 NIS |
3999 | if (!tmp && PL_expect == XSTATE |
4000 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 4001 | s = d + 1; |
3280af22 | 4002 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 4003 | CLINE; |
4004 | TOKEN(LABEL); | |
3643fb5f CS |
4005 | } |
4006 | ||
4007 | /* Check for keywords */ | |
3280af22 | 4008 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
4009 | |
4010 | /* Is this a word before a => operator? */ | |
1c3923b3 | 4011 | if (*d == '=' && d[1] == '>') { |
748a9306 | 4012 | CLINE; |
3280af22 | 4013 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 4014 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 4015 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4016 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
4017 | TERM(WORD); |
4018 | } | |
4019 | ||
a0d0e21e | 4020 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
4021 | GV *ogv = Nullgv; /* override (winner) */ |
4022 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 4023 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 4024 | CV *cv; |
3280af22 | 4025 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
4026 | (cv = GvCVu(gv))) |
4027 | { | |
4028 | if (GvIMPORTED_CV(gv)) | |
4029 | ogv = gv; | |
4030 | else if (! CvMETHOD(cv)) | |
4031 | hgv = gv; | |
4032 | } | |
4033 | if (!ogv && | |
3280af22 NIS |
4034 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
4035 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
4036 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
4037 | { | |
4038 | ogv = gv; | |
4039 | } | |
4040 | } | |
4041 | if (ogv) { | |
30fe34ed | 4042 | orig_keyword = tmp; |
56f7f34b | 4043 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
4044 | } |
4045 | else if (gv && !gvp | |
4046 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 4047 | && GvCVu(gv) |
3280af22 | 4048 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
4049 | { |
4050 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 4051 | } |
7fc307b5 RGS |
4052 | else if (gv && !gvp |
4053 | && tmp == -KEY_err | |
4054 | && GvCVu(gv) | |
4055 | && PL_expect != XOPERATOR | |
4056 | && PL_expect != XTERMORDORDOR) | |
4057 | { | |
4058 | /* any sub overrides the "err" keyword, except when really an | |
4059 | * operator is expected */ | |
4060 | tmp = 0; | |
4061 | } | |
56f7f34b CS |
4062 | else { /* no override */ |
4063 | tmp = -tmp; | |
ac206dc8 | 4064 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 4065 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
4066 | "dump() better written as CORE::dump()"); |
4067 | } | |
56f7f34b CS |
4068 | gv = Nullgv; |
4069 | gvp = 0; | |
4944e2f7 GS |
4070 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
4071 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 4072 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 4073 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 4074 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 4075 | } |
a0d0e21e LW |
4076 | } |
4077 | ||
4078 | reserved_word: | |
4079 | switch (tmp) { | |
79072805 LW |
4080 | |
4081 | default: /* not a keyword */ | |
93a17b20 | 4082 | just_a_word: { |
96e4d5b1 | 4083 | SV *sv; |
ce29ac45 | 4084 | int pkgname = 0; |
3280af22 | 4085 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
4086 | |
4087 | /* Get the rest if it looks like a package qualifier */ | |
4088 | ||
155aba94 | 4089 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 4090 | STRLEN morelen; |
3280af22 | 4091 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
4092 | TRUE, &morelen); |
4093 | if (!morelen) | |
cea2e8a9 | 4094 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 4095 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 4096 | len += morelen; |
ce29ac45 | 4097 | pkgname = 1; |
a0d0e21e | 4098 | } |
8990e307 | 4099 | |
3280af22 NIS |
4100 | if (PL_expect == XOPERATOR) { |
4101 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 4102 | CopLINE_dec(PL_curcop); |
9014280d | 4103 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 4104 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
4105 | } |
4106 | else | |
54310121 | 4107 | no_op("Bareword",s); |
463ee0b2 | 4108 | } |
8990e307 | 4109 | |
c3e0f903 GS |
4110 | /* Look for a subroutine with this name in current package, |
4111 | unless name is "Foo::", in which case Foo is a bearword | |
4112 | (and a package name). */ | |
4113 | ||
4114 | if (len > 2 && | |
3280af22 | 4115 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 4116 | { |
e476b1b5 | 4117 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 4118 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 4119 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 4120 | PL_tokenbuf); |
c3e0f903 | 4121 | len -= 2; |
3280af22 | 4122 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
4123 | gv = Nullgv; |
4124 | gvp = 0; | |
4125 | } | |
4126 | else { | |
4127 | len = 0; | |
4128 | if (!gv) | |
3280af22 | 4129 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
4130 | } |
4131 | ||
4132 | /* if we saw a global override before, get the right name */ | |
8990e307 | 4133 | |
49dc05e3 | 4134 | if (gvp) { |
79cb57f6 | 4135 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 4136 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
4137 | } |
4138 | else | |
3280af22 | 4139 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 4140 | |
a0d0e21e LW |
4141 | /* Presume this is going to be a bareword of some sort. */ |
4142 | ||
4143 | CLINE; | |
49dc05e3 | 4144 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 4145 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
4146 | /* UTF-8 package name? */ |
4147 | if (UTF && !IN_BYTES && | |
4148 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
4149 | SvUTF8_on(sv); | |
a0d0e21e | 4150 | |
c3e0f903 GS |
4151 | /* And if "Foo::", then that's what it certainly is. */ |
4152 | ||
4153 | if (len) | |
4154 | goto safe_bareword; | |
4155 | ||
8990e307 LW |
4156 | /* See if it's the indirect object for a list operator. */ |
4157 | ||
3280af22 NIS |
4158 | if (PL_oldoldbufptr && |
4159 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
4160 | (PL_oldoldbufptr == PL_last_lop |
4161 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 4162 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
4163 | (PL_expect == XREF || |
4164 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 4165 | { |
748a9306 LW |
4166 | bool immediate_paren = *s == '('; |
4167 | ||
a0d0e21e LW |
4168 | /* (Now we can afford to cross potential line boundary.) */ |
4169 | s = skipspace(s); | |
4170 | ||
4171 | /* Two barewords in a row may indicate method call. */ | |
4172 | ||
7e2040f0 | 4173 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
bbf60fe6 | 4174 | return REPORT(tmp); |
a0d0e21e LW |
4175 | |
4176 | /* If not a declared subroutine, it's an indirect object. */ | |
4177 | /* (But it's an indir obj regardless for sort.) */ | |
4178 | ||
7948272d | 4179 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 4180 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 4181 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 4182 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 4183 | { |
3280af22 | 4184 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 4185 | goto bareword; |
93a17b20 LW |
4186 | } |
4187 | } | |
8990e307 | 4188 | |
3280af22 | 4189 | PL_expect = XOPERATOR; |
8990e307 | 4190 | s = skipspace(s); |
1c3923b3 GS |
4191 | |
4192 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4193 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4194 | CLINE; |
4195 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4196 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4197 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4198 | TERM(WORD); |
4199 | } | |
4200 | ||
4201 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4202 | if (*s == '(') { |
79072805 | 4203 | CLINE; |
96e4d5b1 | 4204 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4205 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4206 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4207 | s = d + 1; |
4208 | goto its_constant; | |
4209 | } | |
4210 | } | |
3280af22 NIS |
4211 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4212 | PL_expect = XOPERATOR; | |
93a17b20 | 4213 | force_next(WORD); |
c07a80fd | 4214 | yylval.ival = 0; |
463ee0b2 | 4215 | TOKEN('&'); |
79072805 | 4216 | } |
93a17b20 | 4217 | |
a0d0e21e | 4218 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4219 | |
8ebc5c01 | 4220 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4221 | PL_last_lop = PL_oldbufptr; |
4222 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4223 | PREBLOCK(METHOD); |
463ee0b2 LW |
4224 | } |
4225 | ||
8990e307 LW |
4226 | /* If followed by a bareword, see if it looks like indir obj. */ |
4227 | ||
30fe34ed RGS |
4228 | if (!orig_keyword |
4229 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
4230 | && (tmp = intuit_method(s,gv))) | |
bbf60fe6 | 4231 | return REPORT(tmp); |
93a17b20 | 4232 | |
8990e307 LW |
4233 | /* Not a method, so call it a subroutine (if defined) */ |
4234 | ||
8ebc5c01 | 4235 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4236 | CV* cv; |
0453d815 | 4237 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4238 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4239 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4240 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4241 | /* Check for a constant sub */ |
46fc3d4c | 4242 | cv = GvCV(gv); |
96e4d5b1 | 4243 | if ((sv = cv_const_sv(cv))) { |
4244 | its_constant: | |
4245 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4246 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4247 | yylval.opval->op_private = 0; | |
4248 | TOKEN(WORD); | |
89bfa8cd | 4249 | } |
4250 | ||
a5f75d66 AD |
4251 | /* Resolve to GV now. */ |
4252 | op_free(yylval.opval); | |
4253 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4254 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4255 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4256 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4257 | /* Is there a prototype? */ |
4258 | if (SvPOK(cv)) { | |
4259 | STRLEN len; | |
7a52d87a | 4260 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4261 | if (!len) |
4262 | TERM(FUNC0SUB); | |
770526c1 | 4263 | if (*proto == '$' && proto[1] == '\0') |
4633a7c4 | 4264 | OPERATOR(UNIOPSUB); |
0f5d0394 AE |
4265 | while (*proto == ';') |
4266 | proto++; | |
7a52d87a | 4267 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4268 | sv_setpv(PL_subname, PL_curstash ? |
4269 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4270 | PREBLOCK(LSTOPSUB); |
4271 | } | |
a9ef352a | 4272 | } |
3280af22 NIS |
4273 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4274 | PL_expect = XTERM; | |
8990e307 LW |
4275 | force_next(WORD); |
4276 | TOKEN(NOAMP); | |
4277 | } | |
748a9306 | 4278 | |
8990e307 LW |
4279 | /* Call it a bare word */ |
4280 | ||
5603f27d GS |
4281 | if (PL_hints & HINT_STRICT_SUBS) |
4282 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4283 | else { | |
4284 | bareword: | |
4285 | if (ckWARN(WARN_RESERVED)) { | |
4286 | if (lastchar != '-') { | |
4287 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4288 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4289 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4290 | PL_tokenbuf); |
4291 | } | |
748a9306 LW |
4292 | } |
4293 | } | |
c3e0f903 GS |
4294 | |
4295 | safe_bareword: | |
3792a11b NC |
4296 | if ((lastchar == '*' || lastchar == '%' || lastchar == '&') |
4297 | && ckWARN_d(WARN_AMBIGUOUS)) { | |
9014280d | 4298 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4299 | "Operator or semicolon missing before %c%s", |
3280af22 | 4300 | lastchar, PL_tokenbuf); |
9014280d | 4301 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4302 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4303 | lastchar, lastchar); |
4304 | } | |
93a17b20 | 4305 | TOKEN(WORD); |
79072805 | 4306 | } |
79072805 | 4307 | |
68dc0745 | 4308 | case KEY___FILE__: |
46fc3d4c | 4309 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4310 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4311 | TERM(THING); |
4312 | ||
79072805 | 4313 | case KEY___LINE__: |
cf2093f6 | 4314 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4315 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4316 | TERM(THING); |
68dc0745 | 4317 | |
4318 | case KEY___PACKAGE__: | |
4319 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 4320 | (PL_curstash |
9508c957 | 4321 | ? newSVpv(HvNAME(PL_curstash), 0) |
3280af22 | 4322 | : &PL_sv_undef)); |
79072805 | 4323 | TERM(THING); |
79072805 | 4324 | |
e50aee73 | 4325 | case KEY___DATA__: |
79072805 LW |
4326 | case KEY___END__: { |
4327 | GV *gv; | |
79072805 LW |
4328 | |
4329 | /*SUPPRESS 560*/ | |
3280af22 | 4330 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4331 | char *pname = "main"; |
3280af22 NIS |
4332 | if (PL_tokenbuf[2] == 'D') |
4333 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4334 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4335 | GvMULTI_on(gv); |
79072805 | 4336 | if (!GvIO(gv)) |
a0d0e21e | 4337 | GvIOp(gv) = newIO(); |
3280af22 | 4338 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4339 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4340 | { | |
3280af22 | 4341 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4342 | fcntl(fd,F_SETFD,fd >= 3); |
4343 | } | |
79072805 | 4344 | #endif |
fd049845 | 4345 | /* Mark this internal pseudo-handle as clean */ |
4346 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4347 | if (PL_preprocess) |
50952442 | 4348 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4349 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4350 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4351 | else |
50952442 | 4352 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4353 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4354 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4355 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4356 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4357 | if (PL_bufend-PL_bufptr > 2 |
4358 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4359 | { |
4360 | Off_t loc = 0; | |
50952442 | 4361 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4362 | loc = PerlIO_tell(PL_rsfp); |
4363 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4364 | } | |
2986a63f JH |
4365 | #ifdef NETWARE |
4366 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4367 | #else | |
c39cd008 | 4368 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4369 | #endif /* NETWARE */ |
1143fce0 JH |
4370 | #ifdef PERLIO_IS_STDIO /* really? */ |
4371 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4372 | /* XXX see note in do_binmode() */ |
4373 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4374 | # endif |
4375 | #endif | |
c39cd008 GS |
4376 | if (loc > 0) |
4377 | PerlIO_seek(PL_rsfp, loc, 0); | |
4378 | } | |
4379 | } | |
4380 | #endif | |
7948272d | 4381 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
4382 | if (!IN_BYTES) { |
4383 | if (UTF) | |
4384 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
4385 | else if (PL_encoding) { | |
4386 | SV *name; | |
4387 | dSP; | |
4388 | ENTER; | |
4389 | SAVETMPS; | |
4390 | PUSHMARK(sp); | |
4391 | EXTEND(SP, 1); | |
4392 | XPUSHs(PL_encoding); | |
4393 | PUTBACK; | |
4394 | call_method("name", G_SCALAR); | |
4395 | SPAGAIN; | |
4396 | name = POPs; | |
4397 | PUTBACK; | |
4398 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, | |
4399 | Perl_form(aTHX_ ":encoding(%"SVf")", | |
4400 | name)); | |
4401 | FREETMPS; | |
4402 | LEAVE; | |
4403 | } | |
4404 | } | |
7948272d | 4405 | #endif |
3280af22 | 4406 | PL_rsfp = Nullfp; |
79072805 LW |
4407 | } |
4408 | goto fake_eof; | |
e929a76b | 4409 | } |
de3bb511 | 4410 | |
8990e307 | 4411 | case KEY_AUTOLOAD: |
ed6116ce | 4412 | case KEY_DESTROY: |
79072805 | 4413 | case KEY_BEGIN: |
7d30b5c4 | 4414 | case KEY_CHECK: |
7d07dbc2 | 4415 | case KEY_INIT: |
7d30b5c4 | 4416 | case KEY_END: |
3280af22 NIS |
4417 | if (PL_expect == XSTATE) { |
4418 | s = PL_bufptr; | |
93a17b20 | 4419 | goto really_sub; |
79072805 LW |
4420 | } |
4421 | goto just_a_word; | |
4422 | ||
a0d0e21e LW |
4423 | case KEY_CORE: |
4424 | if (*s == ':' && s[1] == ':') { | |
4425 | s += 2; | |
748a9306 | 4426 | d = s; |
3280af22 | 4427 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4428 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4429 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4430 | if (tmp < 0) |
4431 | tmp = -tmp; | |
4432 | goto reserved_word; | |
4433 | } | |
4434 | goto just_a_word; | |
4435 | ||
463ee0b2 LW |
4436 | case KEY_abs: |
4437 | UNI(OP_ABS); | |
4438 | ||
79072805 LW |
4439 | case KEY_alarm: |
4440 | UNI(OP_ALARM); | |
4441 | ||
4442 | case KEY_accept: | |
a0d0e21e | 4443 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4444 | |
463ee0b2 LW |
4445 | case KEY_and: |
4446 | OPERATOR(ANDOP); | |
4447 | ||
79072805 | 4448 | case KEY_atan2: |
a0d0e21e | 4449 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4450 | |
79072805 | 4451 | case KEY_bind: |
a0d0e21e | 4452 | LOP(OP_BIND,XTERM); |
79072805 LW |
4453 | |
4454 | case KEY_binmode: | |
1c1fc3ea | 4455 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4456 | |
4457 | case KEY_bless: | |
a0d0e21e | 4458 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4459 | |
4460 | case KEY_chop: | |
4461 | UNI(OP_CHOP); | |
4462 | ||
4463 | case KEY_continue: | |
4464 | PREBLOCK(CONTINUE); | |
4465 | ||
4466 | case KEY_chdir: | |
85e6fe83 | 4467 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4468 | UNI(OP_CHDIR); |
4469 | ||
4470 | case KEY_close: | |
4471 | UNI(OP_CLOSE); | |
4472 | ||
4473 | case KEY_closedir: | |
4474 | UNI(OP_CLOSEDIR); | |
4475 | ||
4476 | case KEY_cmp: | |
4477 | Eop(OP_SCMP); | |
4478 | ||
4479 | case KEY_caller: | |
4480 | UNI(OP_CALLER); | |
4481 | ||
4482 | case KEY_crypt: | |
4483 | #ifdef FCRYPT | |
f4c556ac GS |
4484 | if (!PL_cryptseen) { |
4485 | PL_cryptseen = TRUE; | |
de3bb511 | 4486 | init_des(); |
f4c556ac | 4487 | } |
a687059c | 4488 | #endif |
a0d0e21e | 4489 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4490 | |
4491 | case KEY_chmod: | |
a0d0e21e | 4492 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4493 | |
4494 | case KEY_chown: | |
a0d0e21e | 4495 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4496 | |
4497 | case KEY_connect: | |
a0d0e21e | 4498 | LOP(OP_CONNECT,XTERM); |
79072805 | 4499 | |
463ee0b2 LW |
4500 | case KEY_chr: |
4501 | UNI(OP_CHR); | |
4502 | ||
79072805 LW |
4503 | case KEY_cos: |
4504 | UNI(OP_COS); | |
4505 | ||
4506 | case KEY_chroot: | |
4507 | UNI(OP_CHROOT); | |
4508 | ||
4509 | case KEY_do: | |
4510 | s = skipspace(s); | |
4511 | if (*s == '{') | |
a0d0e21e | 4512 | PRETERMBLOCK(DO); |
79072805 | 4513 | if (*s != '\'') |
89c5585f | 4514 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4515 | OPERATOR(DO); |
79072805 LW |
4516 | |
4517 | case KEY_die: | |
3280af22 | 4518 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4519 | LOP(OP_DIE,XTERM); |
79072805 LW |
4520 | |
4521 | case KEY_defined: | |
4522 | UNI(OP_DEFINED); | |
4523 | ||
4524 | case KEY_delete: | |
a0d0e21e | 4525 | UNI(OP_DELETE); |
79072805 LW |
4526 | |
4527 | case KEY_dbmopen: | |
a0d0e21e LW |
4528 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4529 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4530 | |
4531 | case KEY_dbmclose: | |
4532 | UNI(OP_DBMCLOSE); | |
4533 | ||
4534 | case KEY_dump: | |
a0d0e21e | 4535 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4536 | LOOPX(OP_DUMP); |
4537 | ||
4538 | case KEY_else: | |
4539 | PREBLOCK(ELSE); | |
4540 | ||
4541 | case KEY_elsif: | |
57843af0 | 4542 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4543 | OPERATOR(ELSIF); |
4544 | ||
4545 | case KEY_eq: | |
4546 | Eop(OP_SEQ); | |
4547 | ||
a0d0e21e LW |
4548 | case KEY_exists: |
4549 | UNI(OP_EXISTS); | |
4e553d73 | 4550 | |
79072805 LW |
4551 | case KEY_exit: |
4552 | UNI(OP_EXIT); | |
4553 | ||
4554 | case KEY_eval: | |
79072805 | 4555 | s = skipspace(s); |
3280af22 | 4556 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4557 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4558 | |
4559 | case KEY_eof: | |
4560 | UNI(OP_EOF); | |
4561 | ||
c963b151 BD |
4562 | case KEY_err: |
4563 | OPERATOR(DOROP); | |
4564 | ||
79072805 LW |
4565 | case KEY_exp: |
4566 | UNI(OP_EXP); | |
4567 | ||
4568 | case KEY_each: | |
4569 | UNI(OP_EACH); | |
4570 | ||
4571 | case KEY_exec: | |
4572 | set_csh(); | |
a0d0e21e | 4573 | LOP(OP_EXEC,XREF); |
79072805 LW |
4574 | |
4575 | case KEY_endhostent: | |
4576 | FUN0(OP_EHOSTENT); | |
4577 | ||
4578 | case KEY_endnetent: | |
4579 | FUN0(OP_ENETENT); | |
4580 | ||
4581 | case KEY_endservent: | |
4582 | FUN0(OP_ESERVENT); | |
4583 | ||
4584 | case KEY_endprotoent: | |
4585 | FUN0(OP_EPROTOENT); | |
4586 | ||
4587 | case KEY_endpwent: | |
4588 | FUN0(OP_EPWENT); | |
4589 | ||
4590 | case KEY_endgrent: | |
4591 | FUN0(OP_EGRENT); | |
4592 | ||
4593 | case KEY_for: | |
4594 | case KEY_foreach: | |
57843af0 | 4595 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4596 | s = skipspace(s); |
7e2040f0 | 4597 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4598 | char *p = s; |
3280af22 | 4599 | if ((PL_bufend - p) >= 3 && |
55497cff | 4600 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4601 | p += 2; | |
77ca0c92 LW |
4602 | else if ((PL_bufend - p) >= 4 && |
4603 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4604 | p += 3; | |
55497cff | 4605 | p = skipspace(p); |
7e2040f0 | 4606 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4607 | p = scan_ident(p, PL_bufend, |
4608 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4609 | p = skipspace(p); | |
4610 | } | |
4611 | if (*p != '$') | |
cea2e8a9 | 4612 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4613 | } |
79072805 LW |
4614 | OPERATOR(FOR); |
4615 | ||
4616 | case KEY_formline: | |
a0d0e21e | 4617 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4618 | |
4619 | case KEY_fork: | |
4620 | FUN0(OP_FORK); | |
4621 | ||
4622 | case KEY_fcntl: | |
a0d0e21e | 4623 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4624 | |
4625 | case KEY_fileno: | |
4626 | UNI(OP_FILENO); | |
4627 | ||
4628 | case KEY_flock: | |
a0d0e21e | 4629 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4630 | |
4631 | case KEY_gt: | |
4632 | Rop(OP_SGT); | |
4633 | ||
4634 | case KEY_ge: | |
4635 | Rop(OP_SGE); | |
4636 | ||
4637 | case KEY_grep: | |
2c38e13d | 4638 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4639 | |
4640 | case KEY_goto: | |
a0d0e21e | 4641 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4642 | LOOPX(OP_GOTO); |
4643 | ||
4644 | case KEY_gmtime: | |
4645 | UNI(OP_GMTIME); | |
4646 | ||
4647 | case KEY_getc: | |
6f33ba73 | 4648 | UNIDOR(OP_GETC); |
79072805 LW |
4649 | |
4650 | case KEY_getppid: | |
4651 | FUN0(OP_GETPPID); | |
4652 | ||
4653 | case KEY_getpgrp: | |
4654 | UNI(OP_GETPGRP); | |
4655 | ||
4656 | case KEY_getpriority: | |
a0d0e21e | 4657 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4658 | |
4659 | case KEY_getprotobyname: | |
4660 | UNI(OP_GPBYNAME); | |
4661 | ||
4662 | case KEY_getprotobynumber: | |
a0d0e21e | 4663 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4664 | |
4665 | case KEY_getprotoent: | |
4666 | FUN0(OP_GPROTOENT); | |
4667 | ||
4668 | case KEY_getpwent: | |
4669 | FUN0(OP_GPWENT); | |
4670 | ||
4671 | case KEY_getpwnam: | |
ff68c719 | 4672 | UNI(OP_GPWNAM); |
79072805 LW |
4673 | |
4674 | case KEY_getpwuid: | |
ff68c719 | 4675 | UNI(OP_GPWUID); |
79072805 LW |
4676 | |
4677 | case KEY_getpeername: | |
4678 | UNI(OP_GETPEERNAME); | |
4679 | ||
4680 | case KEY_gethostbyname: | |
4681 | UNI(OP_GHBYNAME); | |
4682 | ||
4683 | case KEY_gethostbyaddr: | |
a0d0e21e | 4684 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4685 | |
4686 | case KEY_gethostent: | |
4687 | FUN0(OP_GHOSTENT); | |
4688 | ||
4689 | case KEY_getnetbyname: | |
4690 | UNI(OP_GNBYNAME); | |
4691 | ||
4692 | case KEY_getnetbyaddr: | |
a0d0e21e | 4693 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4694 | |
4695 | case KEY_getnetent: | |
4696 | FUN0(OP_GNETENT); | |
4697 | ||
4698 | case KEY_getservbyname: | |
a0d0e21e | 4699 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4700 | |
4701 | case KEY_getservbyport: | |
a0d0e21e | 4702 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4703 | |
4704 | case KEY_getservent: | |
4705 | FUN0(OP_GSERVENT); | |
4706 | ||
4707 | case KEY_getsockname: | |
4708 | UNI(OP_GETSOCKNAME); | |
4709 | ||
4710 | case KEY_getsockopt: | |
a0d0e21e | 4711 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4712 | |
4713 | case KEY_getgrent: | |
4714 | FUN0(OP_GGRENT); | |
4715 | ||
4716 | case KEY_getgrnam: | |
ff68c719 | 4717 | UNI(OP_GGRNAM); |
79072805 LW |
4718 | |
4719 | case KEY_getgrgid: | |
ff68c719 | 4720 | UNI(OP_GGRGID); |
79072805 LW |
4721 | |
4722 | case KEY_getlogin: | |
4723 | FUN0(OP_GETLOGIN); | |
4724 | ||
93a17b20 | 4725 | case KEY_glob: |
a0d0e21e LW |
4726 | set_csh(); |
4727 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4728 | |
79072805 LW |
4729 | case KEY_hex: |
4730 | UNI(OP_HEX); | |
4731 | ||
4732 | case KEY_if: | |
57843af0 | 4733 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4734 | OPERATOR(IF); |
4735 | ||
4736 | case KEY_index: | |
a0d0e21e | 4737 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4738 | |
4739 | case KEY_int: | |
4740 | UNI(OP_INT); | |
4741 | ||
4742 | case KEY_ioctl: | |
a0d0e21e | 4743 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4744 | |
4745 | case KEY_join: | |
a0d0e21e | 4746 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4747 | |
4748 | case KEY_keys: | |
4749 | UNI(OP_KEYS); | |
4750 | ||
4751 | case KEY_kill: | |
a0d0e21e | 4752 | LOP(OP_KILL,XTERM); |
79072805 LW |
4753 | |
4754 | case KEY_last: | |
a0d0e21e | 4755 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4756 | LOOPX(OP_LAST); |
4e553d73 | 4757 | |
79072805 LW |
4758 | case KEY_lc: |
4759 | UNI(OP_LC); | |
4760 | ||
4761 | case KEY_lcfirst: | |
4762 | UNI(OP_LCFIRST); | |
4763 | ||
4764 | case KEY_local: | |
09bef843 | 4765 | yylval.ival = 0; |
79072805 LW |
4766 | OPERATOR(LOCAL); |
4767 | ||
4768 | case KEY_length: | |
4769 | UNI(OP_LENGTH); | |
4770 | ||
4771 | case KEY_lt: | |
4772 | Rop(OP_SLT); | |
4773 | ||
4774 | case KEY_le: | |
4775 | Rop(OP_SLE); | |
4776 | ||
4777 | case KEY_localtime: | |
4778 | UNI(OP_LOCALTIME); | |
4779 | ||
4780 | case KEY_log: | |
4781 | UNI(OP_LOG); | |
4782 | ||
4783 | case KEY_link: | |
a0d0e21e | 4784 | LOP(OP_LINK,XTERM); |
79072805 LW |
4785 | |
4786 | case KEY_listen: | |
a0d0e21e | 4787 | LOP(OP_LISTEN,XTERM); |
79072805 | 4788 | |
c0329465 MB |
4789 | case KEY_lock: |
4790 | UNI(OP_LOCK); | |
4791 | ||
79072805 LW |
4792 | case KEY_lstat: |
4793 | UNI(OP_LSTAT); | |
4794 | ||
4795 | case KEY_m: | |
8782bef2 | 4796 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4797 | TERM(sublex_start()); |
4798 | ||
a0d0e21e | 4799 | case KEY_map: |
2c38e13d | 4800 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4801 | |
79072805 | 4802 | case KEY_mkdir: |
a0d0e21e | 4803 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4804 | |
4805 | case KEY_msgctl: | |
a0d0e21e | 4806 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4807 | |
4808 | case KEY_msgget: | |
a0d0e21e | 4809 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4810 | |
4811 | case KEY_msgrcv: | |
a0d0e21e | 4812 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4813 | |
4814 | case KEY_msgsnd: | |
a0d0e21e | 4815 | LOP(OP_MSGSND,XTERM); |
79072805 | 4816 | |
77ca0c92 | 4817 | case KEY_our: |
93a17b20 | 4818 | case KEY_my: |
77ca0c92 | 4819 | PL_in_my = tmp; |
c750a3ec | 4820 | s = skipspace(s); |
7e2040f0 | 4821 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4822 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4823 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4824 | goto really_sub; | |
def3634b | 4825 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4826 | if (!PL_in_my_stash) { |
c750a3ec | 4827 | char tmpbuf[1024]; |
3280af22 NIS |
4828 | PL_bufptr = s; |
4829 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4830 | yyerror(tmpbuf); |
4831 | } | |
4832 | } | |
09bef843 | 4833 | yylval.ival = 1; |
55497cff | 4834 | OPERATOR(MY); |
93a17b20 | 4835 | |
79072805 | 4836 | case KEY_next: |
a0d0e21e | 4837 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4838 | LOOPX(OP_NEXT); |
4839 | ||
4840 | case KEY_ne: | |
4841 | Eop(OP_SNE); | |
4842 | ||
a0d0e21e | 4843 | case KEY_no: |
3280af22 | 4844 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4845 | yyerror("\"no\" not allowed in expression"); |
4846 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4847 | s = force_version(s, FALSE); |
a0d0e21e LW |
4848 | yylval.ival = 0; |
4849 | OPERATOR(USE); | |
4850 | ||
4851 | case KEY_not: | |
2d2e263d LW |
4852 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4853 | FUN1(OP_NOT); | |
4854 | else | |
4855 | OPERATOR(NOTOP); | |
a0d0e21e | 4856 | |
79072805 | 4857 | case KEY_open: |
93a17b20 | 4858 | s = skipspace(s); |
7e2040f0 | 4859 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4860 | char *t; |
7e2040f0 | 4861 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
e2ab214b DM |
4862 | for (t=d; *t && isSPACE(*t); t++) ; |
4863 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) | |
66fbe8fb HS |
4864 | /* [perl #16184] */ |
4865 | && !(t[0] == '=' && t[1] == '>') | |
4866 | ) { | |
9014280d | 4867 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 4868 | "Precedence problem: open %.*s should be open(%.*s)", |
66fbe8fb HS |
4869 | d - s, s, d - s, s); |
4870 | } | |
93a17b20 | 4871 | } |
a0d0e21e | 4872 | LOP(OP_OPEN,XTERM); |
79072805 | 4873 | |
463ee0b2 | 4874 | case KEY_or: |
a0d0e21e | 4875 | yylval.ival = OP_OR; |
463ee0b2 LW |
4876 | OPERATOR(OROP); |
4877 | ||
79072805 LW |
4878 | case KEY_ord: |
4879 | UNI(OP_ORD); | |
4880 | ||
4881 | case KEY_oct: | |
4882 | UNI(OP_OCT); | |
4883 | ||
4884 | case KEY_opendir: | |
a0d0e21e | 4885 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4886 | |
4887 | case KEY_print: | |
3280af22 | 4888 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4889 | LOP(OP_PRINT,XREF); |
79072805 LW |
4890 | |
4891 | case KEY_printf: | |
3280af22 | 4892 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4893 | LOP(OP_PRTF,XREF); |
79072805 | 4894 | |
c07a80fd | 4895 | case KEY_prototype: |
4896 | UNI(OP_PROTOTYPE); | |
4897 | ||
79072805 | 4898 | case KEY_push: |
a0d0e21e | 4899 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4900 | |
4901 | case KEY_pop: | |
6f33ba73 | 4902 | UNIDOR(OP_POP); |
79072805 | 4903 | |
a0d0e21e | 4904 | case KEY_pos: |
6f33ba73 | 4905 | UNIDOR(OP_POS); |
4e553d73 | 4906 | |
79072805 | 4907 | case KEY_pack: |
a0d0e21e | 4908 | LOP(OP_PACK,XTERM); |
79072805 LW |
4909 | |
4910 | case KEY_package: | |
a0d0e21e | 4911 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4912 | OPERATOR(PACKAGE); |
4913 | ||
4914 | case KEY_pipe: | |
a0d0e21e | 4915 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4916 | |
4917 | case KEY_q: | |
09bef843 | 4918 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4919 | if (!s) |
85e6fe83 | 4920 | missingterm((char*)0); |
79072805 LW |
4921 | yylval.ival = OP_CONST; |
4922 | TERM(sublex_start()); | |
4923 | ||
a0d0e21e LW |
4924 | case KEY_quotemeta: |
4925 | UNI(OP_QUOTEMETA); | |
4926 | ||
8990e307 | 4927 | case KEY_qw: |
09bef843 | 4928 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4929 | if (!s) |
85e6fe83 | 4930 | missingterm((char*)0); |
8127e0e3 GS |
4931 | force_next(')'); |
4932 | if (SvCUR(PL_lex_stuff)) { | |
4933 | OP *words = Nullop; | |
4934 | int warned = 0; | |
3280af22 | 4935 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4936 | while (len) { |
7948272d | 4937 | SV *sv; |
8127e0e3 GS |
4938 | for (; isSPACE(*d) && len; --len, ++d) ; |
4939 | if (len) { | |
4940 | char *b = d; | |
e476b1b5 | 4941 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4942 | for (; !isSPACE(*d) && len; --len, ++d) { |
4943 | if (*d == ',') { | |
9014280d | 4944 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4945 | "Possible attempt to separate words with commas"); |
4946 | ++warned; | |
4947 | } | |
4948 | else if (*d == '#') { | |
9014280d | 4949 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4950 | "Possible attempt to put comments in qw() list"); |
4951 | ++warned; | |
4952 | } | |
4953 | } | |
4954 | } | |
4955 | else { | |
4956 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4957 | } | |
7948272d NIS |
4958 | sv = newSVpvn(b, d-b); |
4959 | if (DO_UTF8(PL_lex_stuff)) | |
4960 | SvUTF8_on(sv); | |
8127e0e3 | 4961 | words = append_elem(OP_LIST, words, |
7948272d | 4962 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4963 | } |
4964 | } | |
8127e0e3 GS |
4965 | if (words) { |
4966 | PL_nextval[PL_nexttoke].opval = words; | |
4967 | force_next(THING); | |
4968 | } | |
55497cff | 4969 | } |
37fd879b | 4970 | if (PL_lex_stuff) { |
8127e0e3 | 4971 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4972 | PL_lex_stuff = Nullsv; |
4973 | } | |
3280af22 | 4974 | PL_expect = XTERM; |
8127e0e3 | 4975 | TOKEN('('); |
8990e307 | 4976 | |
79072805 | 4977 | case KEY_qq: |
09bef843 | 4978 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4979 | if (!s) |
85e6fe83 | 4980 | missingterm((char*)0); |
a0d0e21e | 4981 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4982 | if (SvIVX(PL_lex_stuff) == '\'') |
4983 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4984 | TERM(sublex_start()); |
4985 | ||
8782bef2 GB |
4986 | case KEY_qr: |
4987 | s = scan_pat(s,OP_QR); | |
4988 | TERM(sublex_start()); | |
4989 | ||
79072805 | 4990 | case KEY_qx: |
09bef843 | 4991 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4992 | if (!s) |
85e6fe83 | 4993 | missingterm((char*)0); |
79072805 LW |
4994 | yylval.ival = OP_BACKTICK; |
4995 | set_csh(); | |
4996 | TERM(sublex_start()); | |
4997 | ||
4998 | case KEY_return: | |
4999 | OLDLOP(OP_RETURN); | |
5000 | ||
5001 | case KEY_require: | |
a7cb1f99 | 5002 | s = skipspace(s); |
e759cc13 RGS |
5003 | if (isDIGIT(*s)) { |
5004 | s = force_version(s, FALSE); | |
a7cb1f99 | 5005 | } |
e759cc13 RGS |
5006 | else if (*s != 'v' || !isDIGIT(s[1]) |
5007 | || (s = force_version(s, TRUE), *s == 'v')) | |
5008 | { | |
a7cb1f99 GS |
5009 | *PL_tokenbuf = '\0'; |
5010 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 5011 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
5012 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
5013 | else if (*s == '<') | |
5014 | yyerror("<> should be quotes"); | |
5015 | } | |
463ee0b2 | 5016 | UNI(OP_REQUIRE); |
79072805 LW |
5017 | |
5018 | case KEY_reset: | |
5019 | UNI(OP_RESET); | |
5020 | ||
5021 | case KEY_redo: | |
a0d0e21e | 5022 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
5023 | LOOPX(OP_REDO); |
5024 | ||
5025 | case KEY_rename: | |
a0d0e21e | 5026 | LOP(OP_RENAME,XTERM); |
79072805 LW |
5027 | |
5028 | case KEY_rand: | |
5029 | UNI(OP_RAND); | |
5030 | ||
5031 | case KEY_rmdir: | |
5032 | UNI(OP_RMDIR); | |
5033 | ||
5034 | case KEY_rindex: | |
a0d0e21e | 5035 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
5036 | |
5037 | case KEY_read: | |
a0d0e21e | 5038 | LOP(OP_READ,XTERM); |
79072805 LW |
5039 | |
5040 | case KEY_readdir: | |
5041 | UNI(OP_READDIR); | |
5042 | ||
93a17b20 LW |
5043 | case KEY_readline: |
5044 | set_csh(); | |
6f33ba73 | 5045 | UNIDOR(OP_READLINE); |
93a17b20 LW |
5046 | |
5047 | case KEY_readpipe: | |
5048 | set_csh(); | |
5049 | UNI(OP_BACKTICK); | |
5050 | ||
79072805 LW |
5051 | case KEY_rewinddir: |
5052 | UNI(OP_REWINDDIR); | |
5053 | ||
5054 | case KEY_recv: | |
a0d0e21e | 5055 | LOP(OP_RECV,XTERM); |
79072805 LW |
5056 | |
5057 | case KEY_reverse: | |
a0d0e21e | 5058 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
5059 | |
5060 | case KEY_readlink: | |
6f33ba73 | 5061 | UNIDOR(OP_READLINK); |
79072805 LW |
5062 | |
5063 | case KEY_ref: | |
5064 | UNI(OP_REF); | |
5065 | ||
5066 | case KEY_s: | |
5067 | s = scan_subst(s); | |
5068 | if (yylval.opval) | |
5069 | TERM(sublex_start()); | |
5070 | else | |
5071 | TOKEN(1); /* force error */ | |
5072 | ||
a0d0e21e LW |
5073 | case KEY_chomp: |
5074 | UNI(OP_CHOMP); | |
4e553d73 | 5075 | |
79072805 LW |
5076 | case KEY_scalar: |
5077 | UNI(OP_SCALAR); | |
5078 | ||
5079 | case KEY_select: | |
a0d0e21e | 5080 | LOP(OP_SELECT,XTERM); |
79072805 LW |
5081 | |
5082 | case KEY_seek: | |
a0d0e21e | 5083 | LOP(OP_SEEK,XTERM); |
79072805 LW |
5084 | |
5085 | case KEY_semctl: | |
a0d0e21e | 5086 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
5087 | |
5088 | case KEY_semget: | |
a0d0e21e | 5089 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
5090 | |
5091 | case KEY_semop: | |
a0d0e21e | 5092 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
5093 | |
5094 | case KEY_send: | |
a0d0e21e | 5095 | LOP(OP_SEND,XTERM); |
79072805 LW |
5096 | |
5097 | case KEY_setpgrp: | |
a0d0e21e | 5098 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
5099 | |
5100 | case KEY_setpriority: | |
a0d0e21e | 5101 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
5102 | |
5103 | case KEY_sethostent: | |
ff68c719 | 5104 | UNI(OP_SHOSTENT); |
79072805 LW |
5105 | |
5106 | case KEY_setnetent: | |
ff68c719 | 5107 | UNI(OP_SNETENT); |
79072805 LW |
5108 | |
5109 | case KEY_setservent: | |
ff68c719 | 5110 | UNI(OP_SSERVENT); |
79072805 LW |
5111 | |
5112 | case KEY_setprotoent: | |
ff68c719 | 5113 | UNI(OP_SPROTOENT); |
79072805 LW |
5114 | |
5115 | case KEY_setpwent: | |
5116 | FUN0(OP_SPWENT); | |
5117 | ||
5118 | case KEY_setgrent: | |
5119 | FUN0(OP_SGRENT); | |
5120 | ||
5121 | case KEY_seekdir: | |
a0d0e21e | 5122 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
5123 | |
5124 | case KEY_setsockopt: | |
a0d0e21e | 5125 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
5126 | |
5127 | case KEY_shift: | |
6f33ba73 | 5128 | UNIDOR(OP_SHIFT); |
79072805 LW |
5129 | |
5130 | case KEY_shmctl: | |
a0d0e21e | 5131 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
5132 | |
5133 | case KEY_shmget: | |
a0d0e21e | 5134 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
5135 | |
5136 | case KEY_shmread: | |
a0d0e21e | 5137 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
5138 | |
5139 | case KEY_shmwrite: | |
a0d0e21e | 5140 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
5141 | |
5142 | case KEY_shutdown: | |
a0d0e21e | 5143 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
5144 | |
5145 | case KEY_sin: | |
5146 | UNI(OP_SIN); | |
5147 | ||
5148 | case KEY_sleep: | |
5149 | UNI(OP_SLEEP); | |
5150 | ||
5151 | case KEY_socket: | |
a0d0e21e | 5152 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
5153 | |
5154 | case KEY_socketpair: | |
a0d0e21e | 5155 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
5156 | |
5157 | case KEY_sort: | |
3280af22 | 5158 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
5159 | s = skipspace(s); |
5160 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 5161 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 5162 | PL_expect = XTERM; |
15f0808c | 5163 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 5164 | LOP(OP_SORT,XREF); |
79072805 LW |
5165 | |
5166 | case KEY_split: | |
a0d0e21e | 5167 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
5168 | |
5169 | case KEY_sprintf: | |
a0d0e21e | 5170 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
5171 | |
5172 | case KEY_splice: | |
a0d0e21e | 5173 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
5174 | |
5175 | case KEY_sqrt: | |
5176 | UNI(OP_SQRT); | |
5177 | ||
5178 | case KEY_srand: | |
5179 | UNI(OP_SRAND); | |
5180 | ||
5181 | case KEY_stat: | |
5182 | UNI(OP_STAT); | |
5183 | ||
5184 | case KEY_study: | |
79072805 LW |
5185 | UNI(OP_STUDY); |
5186 | ||
5187 | case KEY_substr: | |
a0d0e21e | 5188 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
5189 | |
5190 | case KEY_format: | |
5191 | case KEY_sub: | |
93a17b20 | 5192 | really_sub: |
09bef843 | 5193 | { |
3280af22 | 5194 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 5195 | SSize_t tboffset = 0; |
09bef843 | 5196 | expectation attrful; |
d731386a | 5197 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
5198 | int key = tmp; |
5199 | ||
5200 | s = skipspace(s); | |
5201 | ||
7e2040f0 | 5202 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
5203 | (*s == ':' && s[1] == ':')) |
5204 | { | |
5205 | PL_expect = XBLOCK; | |
5206 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
5207 | /* remember buffer pos'n for later force_word */ |
5208 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
5209 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5210 | if (strchr(tmpbuf, ':')) | |
5211 | sv_setpv(PL_subname, tmpbuf); | |
5212 | else { | |
5213 | sv_setsv(PL_subname,PL_curstname); | |
5214 | sv_catpvn(PL_subname,"::",2); | |
5215 | sv_catpvn(PL_subname,tmpbuf,len); | |
5216 | } | |
5217 | s = skipspace(d); | |
5218 | have_name = TRUE; | |
5219 | } | |
463ee0b2 | 5220 | else { |
09bef843 SB |
5221 | if (key == KEY_my) |
5222 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5223 | PL_expect = XTERMBLOCK; | |
5224 | attrful = XATTRTERM; | |
5225 | sv_setpv(PL_subname,"?"); | |
5226 | have_name = FALSE; | |
463ee0b2 | 5227 | } |
4633a7c4 | 5228 | |
09bef843 SB |
5229 | if (key == KEY_format) { |
5230 | if (*s == '=') | |
5231 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5232 | if (have_name) | |
b1b65b59 JH |
5233 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5234 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5235 | OPERATOR(FORMAT); |
5236 | } | |
79072805 | 5237 | |
09bef843 SB |
5238 | /* Look for a prototype */ |
5239 | if (*s == '(') { | |
5240 | char *p; | |
5241 | ||
5242 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5243 | if (!s) |
09bef843 | 5244 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5245 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5246 | d = SvPVX(PL_lex_stuff); |
5247 | tmp = 0; | |
d731386a | 5248 | bad_proto = FALSE; |
09bef843 | 5249 | for (p = d; *p; ++p) { |
d37a9538 | 5250 | if (!isSPACE(*p)) { |
09bef843 | 5251 | d[tmp++] = *p; |
d37a9538 ST |
5252 | if (!strchr("$@%*;[]&\\", *p)) |
5253 | bad_proto = TRUE; | |
5254 | } | |
09bef843 SB |
5255 | } |
5256 | d[tmp] = '\0'; | |
420cdfc1 | 5257 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5258 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
5259 | "Illegal character in prototype for %"SVf" : %s", |
5260 | PL_subname, d); | |
09bef843 SB |
5261 | SvCUR(PL_lex_stuff) = tmp; |
5262 | have_proto = TRUE; | |
68dc0745 | 5263 | |
09bef843 | 5264 | s = skipspace(s); |
4633a7c4 | 5265 | } |
09bef843 SB |
5266 | else |
5267 | have_proto = FALSE; | |
5268 | ||
5269 | if (*s == ':' && s[1] != ':') | |
5270 | PL_expect = attrful; | |
8e742a20 MHM |
5271 | else if (*s != '{' && key == KEY_sub) { |
5272 | if (!have_name) | |
5273 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
5274 | else if (*s != ';') | |
5275 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, PL_subname); | |
5276 | } | |
09bef843 SB |
5277 | |
5278 | if (have_proto) { | |
b1b65b59 JH |
5279 | PL_nextval[PL_nexttoke].opval = |
5280 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5281 | PL_lex_stuff = Nullsv; |
5282 | force_next(THING); | |
68dc0745 | 5283 | } |
09bef843 | 5284 | if (!have_name) { |
c99da370 JH |
5285 | sv_setpv(PL_subname, |
5286 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5287 | TOKEN(ANONSUB); |
4633a7c4 | 5288 | } |
b1b65b59 JH |
5289 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5290 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5291 | if (key == KEY_my) |
5292 | TOKEN(MYSUB); | |
5293 | TOKEN(SUB); | |
4633a7c4 | 5294 | } |
79072805 LW |
5295 | |
5296 | case KEY_system: | |
5297 | set_csh(); | |
a0d0e21e | 5298 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5299 | |
5300 | case KEY_symlink: | |
a0d0e21e | 5301 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5302 | |
5303 | case KEY_syscall: | |
a0d0e21e | 5304 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5305 | |
c07a80fd | 5306 | case KEY_sysopen: |
5307 | LOP(OP_SYSOPEN,XTERM); | |
5308 | ||
137443ea | 5309 | case KEY_sysseek: |
5310 | LOP(OP_SYSSEEK,XTERM); | |
5311 | ||
79072805 | 5312 | case KEY_sysread: |
a0d0e21e | 5313 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5314 | |
5315 | case KEY_syswrite: | |
a0d0e21e | 5316 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5317 | |
5318 | case KEY_tr: | |
5319 | s = scan_trans(s); | |
5320 | TERM(sublex_start()); | |
5321 | ||
5322 | case KEY_tell: | |
5323 | UNI(OP_TELL); | |
5324 | ||
5325 | case KEY_telldir: | |
5326 | UNI(OP_TELLDIR); | |
5327 | ||
463ee0b2 | 5328 | case KEY_tie: |
a0d0e21e | 5329 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5330 | |
c07a80fd | 5331 | case KEY_tied: |
5332 | UNI(OP_TIED); | |
5333 | ||
79072805 LW |
5334 | case KEY_time: |
5335 | FUN0(OP_TIME); | |
5336 | ||
5337 | case KEY_times: | |
5338 | FUN0(OP_TMS); | |
5339 | ||
5340 | case KEY_truncate: | |
a0d0e21e | 5341 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5342 | |
5343 | case KEY_uc: | |
5344 | UNI(OP_UC); | |
5345 | ||
5346 | case KEY_ucfirst: | |
5347 | UNI(OP_UCFIRST); | |
5348 | ||
463ee0b2 LW |
5349 | case KEY_untie: |
5350 | UNI(OP_UNTIE); | |
5351 | ||
79072805 | 5352 | case KEY_until: |
57843af0 | 5353 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5354 | OPERATOR(UNTIL); |
5355 | ||
5356 | case KEY_unless: | |
57843af0 | 5357 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5358 | OPERATOR(UNLESS); |
5359 | ||
5360 | case KEY_unlink: | |
a0d0e21e | 5361 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5362 | |
5363 | case KEY_undef: | |
6f33ba73 | 5364 | UNIDOR(OP_UNDEF); |
79072805 LW |
5365 | |
5366 | case KEY_unpack: | |
a0d0e21e | 5367 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5368 | |
5369 | case KEY_utime: | |
a0d0e21e | 5370 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5371 | |
5372 | case KEY_umask: | |
6f33ba73 | 5373 | UNIDOR(OP_UMASK); |
79072805 LW |
5374 | |
5375 | case KEY_unshift: | |
a0d0e21e LW |
5376 | LOP(OP_UNSHIFT,XTERM); |
5377 | ||
5378 | case KEY_use: | |
3280af22 | 5379 | if (PL_expect != XSTATE) |
a0d0e21e | 5380 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5381 | s = skipspace(s); |
a7cb1f99 | 5382 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5383 | s = force_version(s, TRUE); |
a7cb1f99 | 5384 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5385 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5386 | force_next(WORD); |
5387 | } | |
e759cc13 RGS |
5388 | else if (*s == 'v') { |
5389 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5390 | s = force_version(s, FALSE); | |
5391 | } | |
89bfa8cd | 5392 | } |
5393 | else { | |
5394 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5395 | s = force_version(s, FALSE); |
89bfa8cd | 5396 | } |
a0d0e21e LW |
5397 | yylval.ival = 1; |
5398 | OPERATOR(USE); | |
79072805 LW |
5399 | |
5400 | case KEY_values: | |
5401 | UNI(OP_VALUES); | |
5402 | ||
5403 | case KEY_vec: | |
a0d0e21e | 5404 | LOP(OP_VEC,XTERM); |
79072805 LW |
5405 | |
5406 | case KEY_while: | |
57843af0 | 5407 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5408 | OPERATOR(WHILE); |
5409 | ||
5410 | case KEY_warn: | |
3280af22 | 5411 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5412 | LOP(OP_WARN,XTERM); |
79072805 LW |
5413 | |
5414 | case KEY_wait: | |
5415 | FUN0(OP_WAIT); | |
5416 | ||
5417 | case KEY_waitpid: | |
a0d0e21e | 5418 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5419 | |
5420 | case KEY_wantarray: | |
5421 | FUN0(OP_WANTARRAY); | |
5422 | ||
5423 | case KEY_write: | |
9d116dd7 JH |
5424 | #ifdef EBCDIC |
5425 | { | |
df3728a2 JH |
5426 | char ctl_l[2]; |
5427 | ctl_l[0] = toCTRL('L'); | |
5428 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5429 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5430 | } | |
5431 | #else | |
5432 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5433 | #endif | |
79072805 LW |
5434 | UNI(OP_ENTERWRITE); |
5435 | ||
5436 | case KEY_x: | |
3280af22 | 5437 | if (PL_expect == XOPERATOR) |
79072805 LW |
5438 | Mop(OP_REPEAT); |
5439 | check_uni(); | |
5440 | goto just_a_word; | |
5441 | ||
a0d0e21e LW |
5442 | case KEY_xor: |
5443 | yylval.ival = OP_XOR; | |
5444 | OPERATOR(OROP); | |
5445 | ||
79072805 LW |
5446 | case KEY_y: |
5447 | s = scan_trans(s); | |
5448 | TERM(sublex_start()); | |
5449 | } | |
49dc05e3 | 5450 | }} |
79072805 | 5451 | } |
bf4acbe4 GS |
5452 | #ifdef __SC__ |
5453 | #pragma segment Main | |
5454 | #endif | |
79072805 | 5455 | |
e930465f JH |
5456 | static int |
5457 | S_pending_ident(pTHX) | |
8eceec63 SC |
5458 | { |
5459 | register char *d; | |
a55b55d8 | 5460 | register I32 tmp = 0; |
8eceec63 SC |
5461 | /* pit holds the identifier we read and pending_ident is reset */ |
5462 | char pit = PL_pending_ident; | |
5463 | PL_pending_ident = 0; | |
5464 | ||
5465 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5466 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5467 | ||
5468 | /* if we're in a my(), we can't allow dynamics here. | |
5469 | $foo'bar has already been turned into $foo::bar, so | |
5470 | just check for colons. | |
5471 | ||
5472 | if it's a legal name, the OP is a PADANY. | |
5473 | */ | |
5474 | if (PL_in_my) { | |
5475 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5476 | if (strchr(PL_tokenbuf,':')) | |
5477 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5478 | "variable %s in \"our\"", | |
5479 | PL_tokenbuf)); | |
dd2155a4 | 5480 | tmp = allocmy(PL_tokenbuf); |
8eceec63 SC |
5481 | } |
5482 | else { | |
5483 | if (strchr(PL_tokenbuf,':')) | |
5484 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5485 | ||
5486 | yylval.opval = newOP(OP_PADANY, 0); | |
dd2155a4 | 5487 | yylval.opval->op_targ = allocmy(PL_tokenbuf); |
8eceec63 SC |
5488 | return PRIVATEREF; |
5489 | } | |
5490 | } | |
5491 | ||
5492 | /* | |
5493 | build the ops for accesses to a my() variable. | |
5494 | ||
5495 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5496 | then used in a comparison. This catches most, but not | |
5497 | all cases. For instance, it catches | |
5498 | sort { my($a); $a <=> $b } | |
5499 | but not | |
5500 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5501 | (although why you'd do that is anyone's guess). | |
5502 | */ | |
5503 | ||
5504 | if (!strchr(PL_tokenbuf,':')) { | |
8716503d DM |
5505 | if (!PL_in_my) |
5506 | tmp = pad_findmy(PL_tokenbuf); | |
5507 | if (tmp != NOT_IN_PAD) { | |
8eceec63 | 5508 | /* might be an "our" variable" */ |
dd2155a4 | 5509 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
8eceec63 | 5510 | /* build ops for a bareword */ |
dd2155a4 | 5511 | SV *sym = newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)), 0); |
8eceec63 SC |
5512 | sv_catpvn(sym, "::", 2); |
5513 | sv_catpv(sym, PL_tokenbuf+1); | |
5514 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5515 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5516 | gv_fetchpv(SvPVX(sym), | |
5517 | (PL_in_eval | |
5518 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5519 | : GV_ADDMULTI |
8eceec63 SC |
5520 | ), |
5521 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5522 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5523 | : SVt_PVHV)); | |
5524 | return WORD; | |
5525 | } | |
5526 | ||
5527 | /* if it's a sort block and they're naming $a or $b */ | |
5528 | if (PL_last_lop_op == OP_SORT && | |
5529 | PL_tokenbuf[0] == '$' && | |
5530 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5531 | && !PL_tokenbuf[2]) | |
5532 | { | |
5533 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5534 | d < PL_bufend && *d != '\n'; | |
5535 | d++) | |
5536 | { | |
5537 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5538 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5539 | PL_tokenbuf); | |
5540 | } | |
5541 | } | |
5542 | } | |
5543 | ||
5544 | yylval.opval = newOP(OP_PADANY, 0); | |
5545 | yylval.opval->op_targ = tmp; | |
5546 | return PRIVATEREF; | |
5547 | } | |
5548 | } | |
5549 | ||
5550 | /* | |
5551 | Whine if they've said @foo in a doublequoted string, | |
5552 | and @foo isn't a variable we can find in the symbol | |
5553 | table. | |
5554 | */ | |
5555 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5556 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5557 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5558 | && ckWARN(WARN_AMBIGUOUS)) | |
5559 | { | |
5560 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5561 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5562 | "Possible unintended interpolation of %s in string", |
5563 | PL_tokenbuf); | |
5564 | } | |
5565 | } | |
5566 | ||
5567 | /* build ops for a bareword */ | |
5568 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5569 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5570 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5571 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5572 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5573 | : SVt_PVHV)); | |
5574 | return WORD; | |
5575 | } | |
5576 | ||
79072805 | 5577 | I32 |
864dbfa3 | 5578 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5579 | { |
5580 | switch (*d) { | |
5581 | case '_': | |
5582 | if (d[1] == '_') { | |
a0d0e21e | 5583 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5584 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5585 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5586 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5587 | if (strEQ(d,"__END__")) return KEY___END__; |
5588 | } | |
5589 | break; | |
8990e307 LW |
5590 | case 'A': |
5591 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5592 | break; | |
79072805 | 5593 | case 'a': |
463ee0b2 LW |
5594 | switch (len) { |
5595 | case 3: | |
a0d0e21e LW |
5596 | if (strEQ(d,"and")) return -KEY_and; |
5597 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5598 | break; |
463ee0b2 | 5599 | case 5: |
a0d0e21e LW |
5600 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5601 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5602 | break; |
5603 | case 6: | |
a0d0e21e | 5604 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5605 | break; |
5606 | } | |
79072805 LW |
5607 | break; |
5608 | case 'B': | |
5609 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5610 | break; |
79072805 | 5611 | case 'b': |
a0d0e21e LW |
5612 | if (strEQ(d,"bless")) return -KEY_bless; |
5613 | if (strEQ(d,"bind")) return -KEY_bind; | |
5614 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5615 | break; | |
5616 | case 'C': | |
5617 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5618 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5619 | break; |
5620 | case 'c': | |
5621 | switch (len) { | |
5622 | case 3: | |
a0d0e21e LW |
5623 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5624 | if (strEQ(d,"chr")) return -KEY_chr; | |
5625 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5626 | break; |
5627 | case 4: | |
77bc9082 | 5628 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5629 | break; |
5630 | case 5: | |
a0d0e21e LW |
5631 | if (strEQ(d,"close")) return -KEY_close; |
5632 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5633 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5634 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5635 | if (strEQ(d,"chown")) return -KEY_chown; | |
5636 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5637 | break; |
5638 | case 6: | |
a0d0e21e LW |
5639 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5640 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5641 | break; |
5642 | case 7: | |
a0d0e21e | 5643 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5644 | break; |
5645 | case 8: | |
a0d0e21e LW |
5646 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5647 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5648 | break; |
5649 | } | |
5650 | break; | |
ed6116ce LW |
5651 | case 'D': |
5652 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5653 | break; | |
79072805 LW |
5654 | case 'd': |
5655 | switch (len) { | |
5656 | case 2: | |
5657 | if (strEQ(d,"do")) return KEY_do; | |
5658 | break; | |
5659 | case 3: | |
a0d0e21e | 5660 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5661 | break; |
5662 | case 4: | |
a0d0e21e | 5663 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5664 | break; |
5665 | case 6: | |
5666 | if (strEQ(d,"delete")) return KEY_delete; | |
5667 | break; | |
5668 | case 7: | |
5669 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5670 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5671 | break; |
5672 | case 8: | |
a0d0e21e | 5673 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5674 | break; |
5675 | } | |
5676 | break; | |
5677 | case 'E': | |
79072805 LW |
5678 | if (strEQ(d,"END")) return KEY_END; |
5679 | break; | |
5680 | case 'e': | |
5681 | switch (len) { | |
5682 | case 2: | |
a0d0e21e | 5683 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5684 | break; |
5685 | case 3: | |
a0d0e21e | 5686 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5687 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5688 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5689 | break; |
5690 | case 4: | |
5691 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5692 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5693 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5694 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5695 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5696 | break; |
5697 | case 5: | |
5698 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5699 | break; | |
a0d0e21e LW |
5700 | case 6: |
5701 | if (strEQ(d,"exists")) return KEY_exists; | |
56da5a46 RGS |
5702 | if (strEQ(d,"elseif") && ckWARN_d(WARN_SYNTAX)) |
5703 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5704 | "elseif should be elsif"); | |
a0d0e21e | 5705 | break; |
79072805 | 5706 | case 8: |
a0d0e21e LW |
5707 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5708 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5709 | break; |
5710 | case 9: | |
a0d0e21e | 5711 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5712 | break; |
5713 | case 10: | |
a0d0e21e LW |
5714 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5715 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5716 | break; |
5717 | case 11: | |
a0d0e21e | 5718 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5719 | break; |
a687059c | 5720 | } |
a687059c | 5721 | break; |
79072805 LW |
5722 | case 'f': |
5723 | switch (len) { | |
5724 | case 3: | |
5725 | if (strEQ(d,"for")) return KEY_for; | |
5726 | break; | |
5727 | case 4: | |
a0d0e21e | 5728 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5729 | break; |
5730 | case 5: | |
a0d0e21e LW |
5731 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5732 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5733 | break; |
5734 | case 6: | |
5735 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5736 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5737 | break; |
5738 | case 7: | |
5739 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5740 | break; | |
5741 | case 8: | |
a0d0e21e | 5742 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5743 | break; |
378cc40b | 5744 | } |
a687059c | 5745 | break; |
79072805 | 5746 | case 'g': |
a687059c LW |
5747 | if (strnEQ(d,"get",3)) { |
5748 | d += 3; | |
5749 | if (*d == 'p') { | |
79072805 LW |
5750 | switch (len) { |
5751 | case 7: | |
a0d0e21e LW |
5752 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5753 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5754 | break; |
5755 | case 8: | |
a0d0e21e LW |
5756 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5757 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5758 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5759 | break; |
5760 | case 11: | |
a0d0e21e LW |
5761 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5762 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5763 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5764 | break; |
5765 | case 14: | |
a0d0e21e | 5766 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5767 | break; |
5768 | case 16: | |
a0d0e21e | 5769 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5770 | break; |
5771 | } | |
a687059c LW |
5772 | } |
5773 | else if (*d == 'h') { | |
a0d0e21e LW |
5774 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5775 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5776 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5777 | } |
5778 | else if (*d == 'n') { | |
a0d0e21e LW |
5779 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5780 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5781 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5782 | } |
5783 | else if (*d == 's') { | |
a0d0e21e LW |
5784 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5785 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5786 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5787 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5788 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5789 | } |
5790 | else if (*d == 'g') { | |
a0d0e21e LW |
5791 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5792 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5793 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5794 | } |
5795 | else if (*d == 'l') { | |
a0d0e21e | 5796 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5797 | } |
770526c1 | 5798 | else if (*d == 'c' && d[1] == '\0') return -KEY_getc; |
79072805 | 5799 | break; |
a687059c | 5800 | } |
79072805 LW |
5801 | switch (len) { |
5802 | case 2: | |
a0d0e21e LW |
5803 | if (strEQ(d,"gt")) return -KEY_gt; |
5804 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5805 | break; |
5806 | case 4: | |
5807 | if (strEQ(d,"grep")) return KEY_grep; | |
5808 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5809 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5810 | break; |
5811 | case 6: | |
a0d0e21e | 5812 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5813 | break; |
378cc40b | 5814 | } |
a687059c | 5815 | break; |
79072805 | 5816 | case 'h': |
a0d0e21e | 5817 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5818 | break; |
7d07dbc2 MB |
5819 | case 'I': |
5820 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5821 | break; | |
79072805 LW |
5822 | case 'i': |
5823 | switch (len) { | |
5824 | case 2: | |
5825 | if (strEQ(d,"if")) return KEY_if; | |
5826 | break; | |
5827 | case 3: | |
a0d0e21e | 5828 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5829 | break; |
5830 | case 5: | |
a0d0e21e LW |
5831 | if (strEQ(d,"index")) return -KEY_index; |
5832 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5833 | break; |
5834 | } | |
a687059c | 5835 | break; |
79072805 | 5836 | case 'j': |
a0d0e21e | 5837 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5838 | break; |
79072805 LW |
5839 | case 'k': |
5840 | if (len == 4) { | |
3a6a8333 | 5841 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5842 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5843 | } |
79072805 | 5844 | break; |
79072805 LW |
5845 | case 'l': |
5846 | switch (len) { | |
5847 | case 2: | |
a0d0e21e LW |
5848 | if (strEQ(d,"lt")) return -KEY_lt; |
5849 | if (strEQ(d,"le")) return -KEY_le; | |
5850 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5851 | break; |
5852 | case 3: | |
a0d0e21e | 5853 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5854 | break; |
5855 | case 4: | |
5856 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5857 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5858 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5859 | break; |
79072805 LW |
5860 | case 5: |
5861 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5862 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5863 | break; |
5864 | case 6: | |
a0d0e21e LW |
5865 | if (strEQ(d,"length")) return -KEY_length; |
5866 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5867 | break; |
5868 | case 7: | |
a0d0e21e | 5869 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5870 | break; |
5871 | case 9: | |
a0d0e21e | 5872 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5873 | break; |
5874 | } | |
a687059c | 5875 | break; |
79072805 LW |
5876 | case 'm': |
5877 | switch (len) { | |
5878 | case 1: return KEY_m; | |
93a17b20 LW |
5879 | case 2: |
5880 | if (strEQ(d,"my")) return KEY_my; | |
5881 | break; | |
a0d0e21e LW |
5882 | case 3: |
5883 | if (strEQ(d,"map")) return KEY_map; | |
5884 | break; | |
79072805 | 5885 | case 5: |
a0d0e21e | 5886 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5887 | break; |
5888 | case 6: | |
a0d0e21e LW |
5889 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5890 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5891 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5892 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5893 | break; |
5894 | } | |
a687059c | 5895 | break; |
79072805 LW |
5896 | case 'n': |
5897 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5898 | if (strEQ(d,"ne")) return -KEY_ne; |
5899 | if (strEQ(d,"not")) return -KEY_not; | |
5900 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5901 | break; |
79072805 LW |
5902 | case 'o': |
5903 | switch (len) { | |
463ee0b2 | 5904 | case 2: |
a0d0e21e | 5905 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5906 | break; |
79072805 | 5907 | case 3: |
a0d0e21e LW |
5908 | if (strEQ(d,"ord")) return -KEY_ord; |
5909 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5910 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5911 | break; |
5912 | case 4: | |
a0d0e21e | 5913 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5914 | break; |
5915 | case 7: | |
a0d0e21e | 5916 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5917 | break; |
fe14fcc3 | 5918 | } |
a687059c | 5919 | break; |
79072805 LW |
5920 | case 'p': |
5921 | switch (len) { | |
5922 | case 3: | |
4e553d73 | 5923 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5924 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5925 | break; |
5926 | case 4: | |
3a6a8333 | 5927 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5928 | if (strEQ(d,"pack")) return -KEY_pack; |
5929 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5930 | break; |
5931 | case 5: | |
5932 | if (strEQ(d,"print")) return KEY_print; | |
5933 | break; | |
5934 | case 6: | |
5935 | if (strEQ(d,"printf")) return KEY_printf; | |
5936 | break; | |
5937 | case 7: | |
5938 | if (strEQ(d,"package")) return KEY_package; | |
5939 | break; | |
c07a80fd | 5940 | case 9: |
5941 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5942 | } |
79072805 LW |
5943 | break; |
5944 | case 'q': | |
770526c1 NC |
5945 | if (len == 1) { |
5946 | return KEY_q; | |
5947 | } | |
5948 | else if (len == 2) { | |
5949 | switch (d[1]) { | |
5950 | case 'r': return KEY_qr; | |
5951 | case 'q': return KEY_qq; | |
5952 | case 'w': return KEY_qw; | |
5953 | case 'x': return KEY_qx; | |
5954 | }; | |
663a0e37 | 5955 | } |
a0d0e21e | 5956 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5957 | break; |
5958 | case 'r': | |
5959 | switch (len) { | |
5960 | case 3: | |
a0d0e21e | 5961 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5962 | break; |
5963 | case 4: | |
a0d0e21e LW |
5964 | if (strEQ(d,"read")) return -KEY_read; |
5965 | if (strEQ(d,"rand")) return -KEY_rand; | |
5966 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5967 | if (strEQ(d,"redo")) return KEY_redo; |
5968 | break; | |
5969 | case 5: | |
a0d0e21e LW |
5970 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5971 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5972 | break; |
5973 | case 6: | |
5974 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5975 | if (strEQ(d,"rename")) return -KEY_rename; |
5976 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5977 | break; |
5978 | case 7: | |
ec4ab249 | 5979 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5980 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5981 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5982 | break; |
5983 | case 8: | |
a0d0e21e LW |
5984 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5985 | if (strEQ(d,"readline")) return -KEY_readline; | |
5986 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5987 | break; |
5988 | case 9: | |
a0d0e21e | 5989 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5990 | break; |
a687059c | 5991 | } |
79072805 LW |
5992 | break; |
5993 | case 's': | |
a687059c | 5994 | switch (d[1]) { |
79072805 | 5995 | case 0: return KEY_s; |
a687059c | 5996 | case 'c': |
79072805 | 5997 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5998 | break; |
5999 | case 'e': | |
79072805 LW |
6000 | switch (len) { |
6001 | case 4: | |
a0d0e21e LW |
6002 | if (strEQ(d,"seek")) return -KEY_seek; |
6003 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
6004 | break; |
6005 | case 5: | |
a0d0e21e | 6006 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
6007 | break; |
6008 | case 6: | |
a0d0e21e LW |
6009 | if (strEQ(d,"select")) return -KEY_select; |
6010 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
6011 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
6012 | break; |
6013 | case 7: | |
a0d0e21e LW |
6014 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
6015 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
6016 | break; |
6017 | case 8: | |
a0d0e21e LW |
6018 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
6019 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
6020 | break; |
6021 | case 9: | |
a0d0e21e | 6022 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
6023 | break; |
6024 | case 10: | |
a0d0e21e LW |
6025 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
6026 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
6027 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
6028 | break; |
6029 | case 11: | |
a0d0e21e LW |
6030 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
6031 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
6032 | break; |
6033 | } | |
a687059c LW |
6034 | break; |
6035 | case 'h': | |
79072805 LW |
6036 | switch (len) { |
6037 | case 5: | |
3a6a8333 | 6038 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
6039 | break; |
6040 | case 6: | |
a0d0e21e LW |
6041 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
6042 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
6043 | break; |
6044 | case 7: | |
a0d0e21e | 6045 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
6046 | break; |
6047 | case 8: | |
a0d0e21e LW |
6048 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
6049 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
6050 | break; |
6051 | } | |
a687059c LW |
6052 | break; |
6053 | case 'i': | |
a0d0e21e | 6054 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
6055 | break; |
6056 | case 'l': | |
a0d0e21e | 6057 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
6058 | break; |
6059 | case 'o': | |
79072805 | 6060 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
6061 | if (strEQ(d,"socket")) return -KEY_socket; |
6062 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
6063 | break; |
6064 | case 'p': | |
79072805 | 6065 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 6066 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 6067 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
6068 | break; |
6069 | case 'q': | |
a0d0e21e | 6070 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
6071 | break; |
6072 | case 'r': | |
a0d0e21e | 6073 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
6074 | break; |
6075 | case 't': | |
a0d0e21e | 6076 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 6077 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
6078 | break; |
6079 | case 'u': | |
a0d0e21e | 6080 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 6081 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
6082 | break; |
6083 | case 'y': | |
79072805 LW |
6084 | switch (len) { |
6085 | case 6: | |
a0d0e21e | 6086 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
6087 | break; |
6088 | case 7: | |
a0d0e21e LW |
6089 | if (strEQ(d,"symlink")) return -KEY_symlink; |
6090 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 6091 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
6092 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
6093 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
6094 | break; |
6095 | case 8: | |
a0d0e21e | 6096 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 6097 | break; |
a687059c | 6098 | } |
a687059c LW |
6099 | break; |
6100 | } | |
6101 | break; | |
79072805 LW |
6102 | case 't': |
6103 | switch (len) { | |
6104 | case 2: | |
6105 | if (strEQ(d,"tr")) return KEY_tr; | |
6106 | break; | |
463ee0b2 LW |
6107 | case 3: |
6108 | if (strEQ(d,"tie")) return KEY_tie; | |
6109 | break; | |
79072805 | 6110 | case 4: |
a0d0e21e | 6111 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 6112 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 6113 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
6114 | break; |
6115 | case 5: | |
a0d0e21e | 6116 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
6117 | break; |
6118 | case 7: | |
a0d0e21e | 6119 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
6120 | break; |
6121 | case 8: | |
a0d0e21e | 6122 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 6123 | break; |
378cc40b | 6124 | } |
a687059c | 6125 | break; |
79072805 LW |
6126 | case 'u': |
6127 | switch (len) { | |
6128 | case 2: | |
a0d0e21e LW |
6129 | if (strEQ(d,"uc")) return -KEY_uc; |
6130 | break; | |
6131 | case 3: | |
6132 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
6133 | break; |
6134 | case 5: | |
6135 | if (strEQ(d,"undef")) return KEY_undef; | |
6136 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 6137 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
6138 | if (strEQ(d,"utime")) return -KEY_utime; |
6139 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
6140 | break; |
6141 | case 6: | |
6142 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
6143 | if (strEQ(d,"unpack")) return -KEY_unpack; |
6144 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
6145 | break; |
6146 | case 7: | |
3a6a8333 | 6147 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 6148 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 6149 | break; |
a687059c LW |
6150 | } |
6151 | break; | |
79072805 | 6152 | case 'v': |
a0d0e21e LW |
6153 | if (strEQ(d,"values")) return -KEY_values; |
6154 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 6155 | break; |
79072805 LW |
6156 | case 'w': |
6157 | switch (len) { | |
6158 | case 4: | |
a0d0e21e LW |
6159 | if (strEQ(d,"warn")) return -KEY_warn; |
6160 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
6161 | break; |
6162 | case 5: | |
6163 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 6164 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
6165 | break; |
6166 | case 7: | |
a0d0e21e | 6167 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
6168 | break; |
6169 | case 9: | |
a0d0e21e | 6170 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 6171 | break; |
2f3197b3 | 6172 | } |
a687059c | 6173 | break; |
79072805 | 6174 | case 'x': |
a0d0e21e LW |
6175 | if (len == 1) return -KEY_x; |
6176 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 6177 | break; |
79072805 LW |
6178 | case 'y': |
6179 | if (len == 1) return KEY_y; | |
6180 | break; | |
6181 | case 'z': | |
a687059c LW |
6182 | break; |
6183 | } | |
79072805 | 6184 | return 0; |
a687059c LW |
6185 | } |
6186 | ||
76e3520e | 6187 | STATIC void |
cea2e8a9 | 6188 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 6189 | { |
2f3197b3 LW |
6190 | char *w; |
6191 | ||
d008e5eb | 6192 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
6193 | if (ckWARN(WARN_SYNTAX)) { |
6194 | int level = 1; | |
6195 | for (w = s+2; *w && level; w++) { | |
6196 | if (*w == '(') | |
6197 | ++level; | |
6198 | else if (*w == ')') | |
6199 | --level; | |
6200 | } | |
6201 | if (*w) | |
6202 | for (; *w && isSPACE(*w); w++) ; | |
6203 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 6204 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 6205 | "%s (...) interpreted as function",name); |
d008e5eb | 6206 | } |
2f3197b3 | 6207 | } |
3280af22 | 6208 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 6209 | s++; |
a687059c LW |
6210 | if (*s == '(') |
6211 | s++; | |
3280af22 | 6212 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6213 | s++; |
7e2040f0 | 6214 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 6215 | w = s++; |
7e2040f0 | 6216 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 6217 | s++; |
3280af22 | 6218 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6219 | s++; |
e929a76b | 6220 | if (*s == ',') { |
463ee0b2 | 6221 | int kw; |
e929a76b | 6222 | *s = '\0'; |
864dbfa3 | 6223 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6224 | *s = ','; |
463ee0b2 | 6225 | if (kw) |
e929a76b | 6226 | return; |
cea2e8a9 | 6227 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6228 | } |
6229 | } | |
6230 | } | |
6231 | ||
423cee85 JH |
6232 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6233 | Best used as sv=new_constant(..., sv, ...). | |
6234 | If s, pv are NULL, calls subroutine with one argument, | |
6235 | and type is used with error messages only. */ | |
6236 | ||
b3ac6de7 | 6237 | STATIC SV * |
dff6d3cd | 6238 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6239 | const char *type) |
b3ac6de7 | 6240 | { |
b3ac6de7 | 6241 | dSP; |
3280af22 | 6242 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6243 | SV *res; |
b3ac6de7 IZ |
6244 | SV **cvp; |
6245 | SV *cv, *typesv; | |
f0af216f | 6246 | const char *why1, *why2, *why3; |
4e553d73 | 6247 | |
f0af216f | 6248 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6249 | SV *msg; |
6250 | ||
f0af216f | 6251 | why2 = strEQ(key,"charnames") |
41ab332f | 6252 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6253 | : ""; |
4e553d73 | 6254 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6255 | (type ? type: "undef"), why2); |
6256 | ||
6257 | /* This is convoluted and evil ("goto considered harmful") | |
6258 | * but I do not understand the intricacies of all the different | |
6259 | * failure modes of %^H in here. The goal here is to make | |
6260 | * the most probable error message user-friendly. --jhi */ | |
6261 | ||
6262 | goto msgdone; | |
6263 | ||
423cee85 | 6264 | report: |
4e553d73 | 6265 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6266 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6267 | msgdone: |
423cee85 JH |
6268 | yyerror(SvPVX(msg)); |
6269 | SvREFCNT_dec(msg); | |
6270 | return sv; | |
6271 | } | |
b3ac6de7 IZ |
6272 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6273 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6274 | why1 = "$^H{"; |
6275 | why2 = key; | |
f0af216f | 6276 | why3 = "} is not defined"; |
423cee85 | 6277 | goto report; |
b3ac6de7 IZ |
6278 | } |
6279 | sv_2mortal(sv); /* Parent created it permanently */ | |
6280 | cv = *cvp; | |
423cee85 JH |
6281 | if (!pv && s) |
6282 | pv = sv_2mortal(newSVpvn(s, len)); | |
6283 | if (type && pv) | |
6284 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6285 | else |
423cee85 | 6286 | typesv = &PL_sv_undef; |
4e553d73 | 6287 | |
e788e7d3 | 6288 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6289 | ENTER ; |
6290 | SAVETMPS; | |
4e553d73 | 6291 | |
423cee85 | 6292 | PUSHMARK(SP) ; |
a5845cb7 | 6293 | EXTEND(sp, 3); |
423cee85 JH |
6294 | if (pv) |
6295 | PUSHs(pv); | |
b3ac6de7 | 6296 | PUSHs(sv); |
423cee85 JH |
6297 | if (pv) |
6298 | PUSHs(typesv); | |
b3ac6de7 | 6299 | PUTBACK; |
423cee85 | 6300 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6301 | |
423cee85 | 6302 | SPAGAIN ; |
4e553d73 | 6303 | |
423cee85 | 6304 | /* Check the eval first */ |
9b0e499b | 6305 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6306 | STRLEN n_a; |
6307 | sv_catpv(ERRSV, "Propagated"); | |
6308 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6309 | (void)POPs; |
423cee85 JH |
6310 | res = SvREFCNT_inc(sv); |
6311 | } | |
6312 | else { | |
6313 | res = POPs; | |
e1f15930 | 6314 | (void)SvREFCNT_inc(res); |
423cee85 | 6315 | } |
4e553d73 | 6316 | |
423cee85 JH |
6317 | PUTBACK ; |
6318 | FREETMPS ; | |
6319 | LEAVE ; | |
b3ac6de7 | 6320 | POPSTACK; |
4e553d73 | 6321 | |
b3ac6de7 | 6322 | if (!SvOK(res)) { |
423cee85 JH |
6323 | why1 = "Call to &{$^H{"; |
6324 | why2 = key; | |
f0af216f | 6325 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6326 | sv = res; |
6327 | goto report; | |
9b0e499b | 6328 | } |
423cee85 | 6329 | |
9b0e499b | 6330 | return res; |
b3ac6de7 | 6331 | } |
4e553d73 | 6332 | |
76e3520e | 6333 | STATIC char * |
cea2e8a9 | 6334 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6335 | { |
6336 | register char *d = dest; | |
8903cb82 | 6337 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6338 | for (;;) { |
8903cb82 | 6339 | if (d >= e) |
cea2e8a9 | 6340 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6341 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6342 | *d++ = *s++; |
7e2040f0 | 6343 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6344 | *d++ = ':'; |
6345 | *d++ = ':'; | |
6346 | s++; | |
6347 | } | |
c3e0f903 | 6348 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6349 | *d++ = *s++; |
6350 | *d++ = *s++; | |
6351 | } | |
fd400ab9 | 6352 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6353 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6354 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6355 | t += UTF8SKIP(t); |
6356 | if (d + (t - s) > e) | |
cea2e8a9 | 6357 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6358 | Copy(s, d, t - s, char); |
6359 | d += t - s; | |
6360 | s = t; | |
6361 | } | |
463ee0b2 LW |
6362 | else { |
6363 | *d = '\0'; | |
6364 | *slp = d - dest; | |
6365 | return s; | |
e929a76b | 6366 | } |
378cc40b LW |
6367 | } |
6368 | } | |
6369 | ||
76e3520e | 6370 | STATIC char * |
cea2e8a9 | 6371 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6372 | { |
6373 | register char *d; | |
8903cb82 | 6374 | register char *e; |
79072805 | 6375 | char *bracket = 0; |
748a9306 | 6376 | char funny = *s++; |
378cc40b | 6377 | |
a0d0e21e LW |
6378 | if (isSPACE(*s)) |
6379 | s = skipspace(s); | |
378cc40b | 6380 | d = dest; |
8903cb82 | 6381 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6382 | if (isDIGIT(*s)) { |
8903cb82 | 6383 | while (isDIGIT(*s)) { |
6384 | if (d >= e) | |
cea2e8a9 | 6385 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6386 | *d++ = *s++; |
8903cb82 | 6387 | } |
378cc40b LW |
6388 | } |
6389 | else { | |
463ee0b2 | 6390 | for (;;) { |
8903cb82 | 6391 | if (d >= e) |
cea2e8a9 | 6392 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6393 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6394 | *d++ = *s++; |
7e2040f0 | 6395 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6396 | *d++ = ':'; |
6397 | *d++ = ':'; | |
6398 | s++; | |
6399 | } | |
a0d0e21e | 6400 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6401 | *d++ = *s++; |
6402 | *d++ = *s++; | |
6403 | } | |
fd400ab9 | 6404 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6405 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6406 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6407 | t += UTF8SKIP(t); |
6408 | if (d + (t - s) > e) | |
cea2e8a9 | 6409 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6410 | Copy(s, d, t - s, char); |
6411 | d += t - s; | |
6412 | s = t; | |
6413 | } | |
463ee0b2 LW |
6414 | else |
6415 | break; | |
6416 | } | |
378cc40b LW |
6417 | } |
6418 | *d = '\0'; | |
6419 | d = dest; | |
79072805 | 6420 | if (*d) { |
3280af22 NIS |
6421 | if (PL_lex_state != LEX_NORMAL) |
6422 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6423 | return s; |
378cc40b | 6424 | } |
748a9306 | 6425 | if (*s == '$' && s[1] && |
3792a11b | 6426 | (isALNUM_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6427 | { |
4810e5ec | 6428 | return s; |
5cd24f17 | 6429 | } |
79072805 LW |
6430 | if (*s == '{') { |
6431 | bracket = s; | |
6432 | s++; | |
6433 | } | |
6434 | else if (ck_uni) | |
6435 | check_uni(); | |
93a17b20 | 6436 | if (s < send) |
79072805 LW |
6437 | *d = *s++; |
6438 | d[1] = '\0'; | |
2b92dfce | 6439 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6440 | *d = toCTRL(*s); |
6441 | s++; | |
de3bb511 | 6442 | } |
79072805 | 6443 | if (bracket) { |
748a9306 | 6444 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6445 | while (s < send) { |
6446 | char ch = *s++; | |
bf4acbe4 | 6447 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6448 | *d = ch; |
6449 | break; | |
6450 | } | |
6451 | } | |
748a9306 | 6452 | } |
7e2040f0 | 6453 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6454 | d++; |
a0ed51b3 LW |
6455 | if (UTF) { |
6456 | e = s; | |
155aba94 | 6457 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6458 | e += UTF8SKIP(e); |
fd400ab9 | 6459 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6460 | e += UTF8SKIP(e); |
6461 | } | |
6462 | Copy(s, d, e - s, char); | |
6463 | d += e - s; | |
6464 | s = e; | |
6465 | } | |
6466 | else { | |
2b92dfce | 6467 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6468 | *d++ = *s++; |
2b92dfce | 6469 | if (d >= e) |
cea2e8a9 | 6470 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6471 | } |
79072805 | 6472 | *d = '\0'; |
bf4acbe4 | 6473 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6474 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6475 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6476 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6477 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6478 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6479 | funny, dest, brack, funny, dest, brack); |
6480 | } | |
79072805 | 6481 | bracket++; |
a0be28da | 6482 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6483 | return s; |
6484 | } | |
4e553d73 NIS |
6485 | } |
6486 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6487 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6488 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6489 | && isALNUM(*s)) | |
6490 | { | |
6491 | d++; | |
6492 | while (isALNUM(*s) && d < e) { | |
6493 | *d++ = *s++; | |
6494 | } | |
6495 | if (d >= e) | |
cea2e8a9 | 6496 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6497 | *d = '\0'; |
79072805 LW |
6498 | } |
6499 | if (*s == '}') { | |
6500 | s++; | |
7df0d042 | 6501 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 6502 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
6503 | PL_expect = XREF; |
6504 | } | |
748a9306 LW |
6505 | if (funny == '#') |
6506 | funny = '@'; | |
d008e5eb | 6507 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6508 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6509 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6510 | { |
9014280d | 6511 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6512 | "Ambiguous use of %c{%s} resolved to %c%s", |
6513 | funny, dest, funny, dest); | |
6514 | } | |
6515 | } | |
79072805 LW |
6516 | } |
6517 | else { | |
6518 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6519 | *dest = '\0'; |
79072805 LW |
6520 | } |
6521 | } | |
3280af22 NIS |
6522 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6523 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6524 | return s; |
6525 | } | |
6526 | ||
cea2e8a9 | 6527 | void |
2b36a5a0 | 6528 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6529 | { |
bbce6d69 | 6530 | if (ch == 'i') |
a0d0e21e | 6531 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6532 | else if (ch == 'g') |
6533 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6534 | else if (ch == 'c') |
6535 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6536 | else if (ch == 'o') |
6537 | *pmfl |= PMf_KEEP; | |
6538 | else if (ch == 'm') | |
6539 | *pmfl |= PMf_MULTILINE; | |
6540 | else if (ch == 's') | |
6541 | *pmfl |= PMf_SINGLELINE; | |
6542 | else if (ch == 'x') | |
6543 | *pmfl |= PMf_EXTENDED; | |
6544 | } | |
378cc40b | 6545 | |
76e3520e | 6546 | STATIC char * |
cea2e8a9 | 6547 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6548 | { |
79072805 LW |
6549 | PMOP *pm; |
6550 | char *s; | |
378cc40b | 6551 | |
09bef843 | 6552 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6553 | if (!s) |
cea2e8a9 | 6554 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6555 | |
8782bef2 | 6556 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6557 | if (PL_multi_open == '?') |
79072805 | 6558 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6559 | if(type == OP_QR) { |
6560 | while (*s && strchr("iomsx", *s)) | |
6561 | pmflag(&pm->op_pmflags,*s++); | |
6562 | } | |
6563 | else { | |
6564 | while (*s && strchr("iogcmsx", *s)) | |
6565 | pmflag(&pm->op_pmflags,*s++); | |
6566 | } | |
4ac733c9 MJD |
6567 | /* issue a warning if /c is specified,but /g is not */ |
6568 | if (ckWARN(WARN_REGEXP) && | |
6569 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6570 | { | |
6571 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6572 | } | |
6573 | ||
4633a7c4 | 6574 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6575 | |
3280af22 | 6576 | PL_lex_op = (OP*)pm; |
79072805 | 6577 | yylval.ival = OP_MATCH; |
378cc40b LW |
6578 | return s; |
6579 | } | |
6580 | ||
76e3520e | 6581 | STATIC char * |
cea2e8a9 | 6582 | S_scan_subst(pTHX_ char *start) |
79072805 | 6583 | { |
a0d0e21e | 6584 | register char *s; |
79072805 | 6585 | register PMOP *pm; |
4fdae800 | 6586 | I32 first_start; |
79072805 LW |
6587 | I32 es = 0; |
6588 | ||
79072805 LW |
6589 | yylval.ival = OP_NULL; |
6590 | ||
09bef843 | 6591 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6592 | |
37fd879b | 6593 | if (!s) |
cea2e8a9 | 6594 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6595 | |
3280af22 | 6596 | if (s[-1] == PL_multi_open) |
79072805 LW |
6597 | s--; |
6598 | ||
3280af22 | 6599 | first_start = PL_multi_start; |
09bef843 | 6600 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6601 | if (!s) { |
37fd879b | 6602 | if (PL_lex_stuff) { |
3280af22 | 6603 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6604 | PL_lex_stuff = Nullsv; |
6605 | } | |
cea2e8a9 | 6606 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6607 | } |
3280af22 | 6608 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6609 | |
79072805 | 6610 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6611 | while (*s) { |
a687059c LW |
6612 | if (*s == 'e') { |
6613 | s++; | |
2f3197b3 | 6614 | es++; |
a687059c | 6615 | } |
b3eb6a9b | 6616 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6617 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6618 | else |
6619 | break; | |
378cc40b | 6620 | } |
79072805 | 6621 | |
64e578a2 MJD |
6622 | /* /c is not meaningful with s/// */ |
6623 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6624 | { |
64e578a2 | 6625 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6626 | } |
6627 | ||
79072805 LW |
6628 | if (es) { |
6629 | SV *repl; | |
0244c3a4 GS |
6630 | PL_sublex_info.super_bufptr = s; |
6631 | PL_sublex_info.super_bufend = PL_bufend; | |
6632 | PL_multi_end = 0; | |
79072805 | 6633 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6634 | repl = newSVpvn("",0); |
463ee0b2 | 6635 | while (es-- > 0) |
a0d0e21e | 6636 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6637 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6638 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6639 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6640 | SvEVALED_on(repl); |
3280af22 NIS |
6641 | SvREFCNT_dec(PL_lex_repl); |
6642 | PL_lex_repl = repl; | |
378cc40b | 6643 | } |
79072805 | 6644 | |
4633a7c4 | 6645 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6646 | PL_lex_op = (OP*)pm; |
79072805 | 6647 | yylval.ival = OP_SUBST; |
378cc40b LW |
6648 | return s; |
6649 | } | |
6650 | ||
76e3520e | 6651 | STATIC char * |
cea2e8a9 | 6652 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6653 | { |
a0d0e21e | 6654 | register char* s; |
11343788 | 6655 | OP *o; |
79072805 LW |
6656 | short *tbl; |
6657 | I32 squash; | |
a0ed51b3 | 6658 | I32 del; |
79072805 LW |
6659 | I32 complement; |
6660 | ||
6661 | yylval.ival = OP_NULL; | |
6662 | ||
09bef843 | 6663 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6664 | if (!s) |
cea2e8a9 | 6665 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6666 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6667 | s--; |
6668 | ||
09bef843 | 6669 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6670 | if (!s) { |
37fd879b | 6671 | if (PL_lex_stuff) { |
3280af22 | 6672 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6673 | PL_lex_stuff = Nullsv; |
6674 | } | |
cea2e8a9 | 6675 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6676 | } |
79072805 | 6677 | |
a0ed51b3 | 6678 | complement = del = squash = 0; |
7a1e2023 NC |
6679 | while (1) { |
6680 | switch (*s) { | |
6681 | case 'c': | |
79072805 | 6682 | complement = OPpTRANS_COMPLEMENT; |
7a1e2023 NC |
6683 | break; |
6684 | case 'd': | |
a0ed51b3 | 6685 | del = OPpTRANS_DELETE; |
7a1e2023 NC |
6686 | break; |
6687 | case 's': | |
79072805 | 6688 | squash = OPpTRANS_SQUASH; |
7a1e2023 NC |
6689 | break; |
6690 | default: | |
6691 | goto no_more; | |
6692 | } | |
395c3793 LW |
6693 | s++; |
6694 | } | |
7a1e2023 | 6695 | no_more: |
8973db79 JH |
6696 | |
6697 | New(803, tbl, complement&&!del?258:256, short); | |
6698 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
59f00321 RGS |
6699 | o->op_private &= ~OPpTRANS_ALL; |
6700 | o->op_private |= del|squash|complement| | |
7948272d NIS |
6701 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
6702 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6703 | |
3280af22 | 6704 | PL_lex_op = o; |
79072805 LW |
6705 | yylval.ival = OP_TRANS; |
6706 | return s; | |
6707 | } | |
6708 | ||
76e3520e | 6709 | STATIC char * |
cea2e8a9 | 6710 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6711 | { |
6712 | SV *herewas; | |
6713 | I32 op_type = OP_SCALAR; | |
6714 | I32 len; | |
6715 | SV *tmpstr; | |
6716 | char term; | |
6717 | register char *d; | |
fc36a67e | 6718 | register char *e; |
4633a7c4 | 6719 | char *peek; |
3280af22 | 6720 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6721 | |
6722 | s += 2; | |
3280af22 NIS |
6723 | d = PL_tokenbuf; |
6724 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6725 | if (!outer) |
79072805 | 6726 | *d++ = '\n'; |
bf4acbe4 | 6727 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
3792a11b | 6728 | if (*peek == '`' || *peek == '\'' || *peek =='"') { |
4633a7c4 | 6729 | s = peek; |
79072805 | 6730 | term = *s++; |
3280af22 | 6731 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6732 | d += len; |
3280af22 | 6733 | if (s < PL_bufend) |
79072805 | 6734 | s++; |
79072805 LW |
6735 | } |
6736 | else { | |
6737 | if (*s == '\\') | |
6738 | s++, term = '\''; | |
6739 | else | |
6740 | term = '"'; | |
7e2040f0 | 6741 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6742 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6743 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6744 | if (d < e) |
6745 | *d++ = *s; | |
6746 | } | |
6747 | } | |
3280af22 | 6748 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6749 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6750 | *d++ = '\n'; |
6751 | *d = '\0'; | |
3280af22 | 6752 | len = d - PL_tokenbuf; |
6a27c188 | 6753 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6754 | d = strchr(s, '\r'); |
6755 | if (d) { | |
6756 | char *olds = s; | |
6757 | s = d; | |
3280af22 | 6758 | while (s < PL_bufend) { |
f63a84b2 LW |
6759 | if (*s == '\r') { |
6760 | *d++ = '\n'; | |
6761 | if (*++s == '\n') | |
6762 | s++; | |
6763 | } | |
6764 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6765 | *d++ = *s++; | |
6766 | s++; | |
6767 | } | |
6768 | else | |
6769 | *d++ = *s++; | |
6770 | } | |
6771 | *d = '\0'; | |
3280af22 NIS |
6772 | PL_bufend = d; |
6773 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6774 | s = olds; |
6775 | } | |
6776 | #endif | |
79072805 | 6777 | d = "\n"; |
3280af22 | 6778 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6779 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6780 | else |
79cb57f6 | 6781 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6782 | s += SvCUR(herewas); |
748a9306 | 6783 | |
8d6dde3e | 6784 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6785 | sv_upgrade(tmpstr, SVt_PVIV); |
6786 | if (term == '\'') { | |
79072805 | 6787 | op_type = OP_CONST; |
748a9306 LW |
6788 | SvIVX(tmpstr) = -1; |
6789 | } | |
6790 | else if (term == '`') { | |
79072805 | 6791 | op_type = OP_BACKTICK; |
748a9306 LW |
6792 | SvIVX(tmpstr) = '\\'; |
6793 | } | |
79072805 LW |
6794 | |
6795 | CLINE; | |
57843af0 | 6796 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6797 | PL_multi_open = PL_multi_close = '<'; |
6798 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6799 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6800 | char *bufptr = PL_sublex_info.super_bufptr; | |
6801 | char *bufend = PL_sublex_info.super_bufend; | |
6802 | char *olds = s - SvCUR(herewas); | |
6803 | s = strchr(bufptr, '\n'); | |
6804 | if (!s) | |
6805 | s = bufend; | |
6806 | d = s; | |
6807 | while (s < bufend && | |
6808 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6809 | if (*s++ == '\n') | |
57843af0 | 6810 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6811 | } |
6812 | if (s >= bufend) { | |
eb160463 | 6813 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6814 | missingterm(PL_tokenbuf); |
6815 | } | |
6816 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6817 | sv_setpvn(tmpstr,d+1,s-d); | |
6818 | s += len - 1; | |
6819 | sv_catpvn(herewas,s,bufend-s); | |
689badd5 | 6820 | Copy(SvPVX(herewas),bufptr,SvCUR(herewas) + 1,char); |
0244c3a4 GS |
6821 | |
6822 | s = olds; | |
6823 | goto retval; | |
6824 | } | |
6825 | else if (!outer) { | |
79072805 | 6826 | d = s; |
3280af22 NIS |
6827 | while (s < PL_bufend && |
6828 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6829 | if (*s++ == '\n') |
57843af0 | 6830 | CopLINE_inc(PL_curcop); |
79072805 | 6831 | } |
3280af22 | 6832 | if (s >= PL_bufend) { |
eb160463 | 6833 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6834 | missingterm(PL_tokenbuf); |
79072805 LW |
6835 | } |
6836 | sv_setpvn(tmpstr,d+1,s-d); | |
6837 | s += len - 1; | |
57843af0 | 6838 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6839 | |
3280af22 NIS |
6840 | sv_catpvn(herewas,s,PL_bufend-s); |
6841 | sv_setsv(PL_linestr,herewas); | |
6842 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6843 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6844 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6845 | } |
6846 | else | |
6847 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6848 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6849 | if (!outer || |
3280af22 | 6850 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6851 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6852 | missingterm(PL_tokenbuf); |
79072805 | 6853 | } |
57843af0 | 6854 | CopLINE_inc(PL_curcop); |
3280af22 | 6855 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6856 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6857 | #ifndef PERL_STRICT_CR |
3280af22 | 6858 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6859 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6860 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6861 | { |
3280af22 NIS |
6862 | PL_bufend[-2] = '\n'; |
6863 | PL_bufend--; | |
6864 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6865 | } |
3280af22 NIS |
6866 | else if (PL_bufend[-1] == '\r') |
6867 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6868 | } |
3280af22 NIS |
6869 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6870 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6871 | #endif |
3280af22 | 6872 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6873 | SV *sv = NEWSV(88,0); |
6874 | ||
93a17b20 | 6875 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6876 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6877 | (void)SvIOK_on(sv); |
6878 | SvIVX(sv) = 0; | |
57843af0 | 6879 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6880 | } |
3280af22 | 6881 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
1de9afcd RGS |
6882 | STRLEN off = PL_bufend - 1 - SvPVX(PL_linestr); |
6883 | *(SvPVX(PL_linestr) + off ) = ' '; | |
3280af22 NIS |
6884 | sv_catsv(PL_linestr,herewas); |
6885 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1de9afcd | 6886 | s = SvPVX(PL_linestr) + off; /* In case PV of PL_linestr moved. */ |
79072805 LW |
6887 | } |
6888 | else { | |
3280af22 NIS |
6889 | s = PL_bufend; |
6890 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6891 | } |
6892 | } | |
79072805 | 6893 | s++; |
0244c3a4 | 6894 | retval: |
57843af0 | 6895 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6896 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6897 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6898 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6899 | } |
8990e307 | 6900 | SvREFCNT_dec(herewas); |
2f31ce75 JH |
6901 | if (!IN_BYTES) { |
6902 | if (UTF && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) | |
6903 | SvUTF8_on(tmpstr); | |
6904 | else if (PL_encoding) | |
6905 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
6906 | } | |
3280af22 | 6907 | PL_lex_stuff = tmpstr; |
79072805 LW |
6908 | yylval.ival = op_type; |
6909 | return s; | |
6910 | } | |
6911 | ||
02aa26ce NT |
6912 | /* scan_inputsymbol |
6913 | takes: current position in input buffer | |
6914 | returns: new position in input buffer | |
6915 | side-effects: yylval and lex_op are set. | |
6916 | ||
6917 | This code handles: | |
6918 | ||
6919 | <> read from ARGV | |
6920 | <FH> read from filehandle | |
6921 | <pkg::FH> read from package qualified filehandle | |
6922 | <pkg'FH> read from package qualified filehandle | |
6923 | <$fh> read from filehandle in $fh | |
6924 | <*.h> filename glob | |
6925 | ||
6926 | */ | |
6927 | ||
76e3520e | 6928 | STATIC char * |
cea2e8a9 | 6929 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6930 | { |
02aa26ce | 6931 | register char *s = start; /* current position in buffer */ |
79072805 | 6932 | register char *d; |
fc36a67e | 6933 | register char *e; |
1b420867 | 6934 | char *end; |
79072805 LW |
6935 | I32 len; |
6936 | ||
3280af22 NIS |
6937 | d = PL_tokenbuf; /* start of temp holding space */ |
6938 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6939 | end = strchr(s, '\n'); |
6940 | if (!end) | |
6941 | end = PL_bufend; | |
6942 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6943 | |
6944 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6945 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6946 | */ |
6947 | ||
3280af22 | 6948 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6949 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6950 | if (s >= end) |
cea2e8a9 | 6951 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6952 | |
fc36a67e | 6953 | s++; |
02aa26ce NT |
6954 | |
6955 | /* check for <$fh> | |
6956 | Remember, only scalar variables are interpreted as filehandles by | |
6957 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6958 | treated as a glob() call. | |
6959 | This code makes use of the fact that except for the $ at the front, | |
6960 | a scalar variable and a filehandle look the same. | |
6961 | */ | |
4633a7c4 | 6962 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6963 | |
6964 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6965 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6966 | d++; |
02aa26ce NT |
6967 | |
6968 | /* If we've tried to read what we allow filehandles to look like, and | |
6969 | there's still text left, then it must be a glob() and not a getline. | |
6970 | Use scan_str to pull out the stuff between the <> and treat it | |
6971 | as nothing more than a string. | |
6972 | */ | |
6973 | ||
3280af22 | 6974 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6975 | yylval.ival = OP_GLOB; |
6976 | set_csh(); | |
09bef843 | 6977 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6978 | if (!s) |
cea2e8a9 | 6979 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6980 | return s; |
6981 | } | |
395c3793 | 6982 | else { |
9b3023bc RGS |
6983 | bool readline_overriden = FALSE; |
6984 | GV *gv_readline = Nullgv; | |
6985 | GV **gvp; | |
02aa26ce | 6986 | /* we're in a filehandle read situation */ |
3280af22 | 6987 | d = PL_tokenbuf; |
02aa26ce NT |
6988 | |
6989 | /* turn <> into <ARGV> */ | |
79072805 | 6990 | if (!len) |
689badd5 | 6991 | Copy("ARGV",d,5,char); |
02aa26ce | 6992 | |
9b3023bc | 6993 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6994 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6995 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6996 | || |
ba979b31 | 6997 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6998 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6999 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
7000 | readline_overriden = TRUE; |
7001 | ||
02aa26ce NT |
7002 | /* if <$fh>, create the ops to turn the variable into a |
7003 | filehandle | |
7004 | */ | |
79072805 | 7005 | if (*d == '$') { |
a0d0e21e | 7006 | I32 tmp; |
02aa26ce NT |
7007 | |
7008 | /* try to find it in the pad for this block, otherwise find | |
7009 | add symbol table ops | |
7010 | */ | |
11343788 | 7011 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
dd2155a4 DM |
7012 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
7013 | SV *sym = sv_2mortal( | |
7014 | newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)),0)); | |
f558d5af JH |
7015 | sv_catpvn(sym, "::", 2); |
7016 | sv_catpv(sym, d+1); | |
7017 | d = SvPVX(sym); | |
7018 | goto intro_sym; | |
7019 | } | |
7020 | else { | |
7021 | OP *o = newOP(OP_PADSV, 0); | |
7022 | o->op_targ = tmp; | |
9b3023bc RGS |
7023 | PL_lex_op = readline_overriden |
7024 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7025 | append_elem(OP_LIST, o, | |
7026 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
7027 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 7028 | } |
a0d0e21e LW |
7029 | } |
7030 | else { | |
f558d5af JH |
7031 | GV *gv; |
7032 | ++d; | |
7033 | intro_sym: | |
7034 | gv = gv_fetchpv(d, | |
7035 | (PL_in_eval | |
7036 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 7037 | : GV_ADDMULTI), |
f558d5af | 7038 | SVt_PV); |
9b3023bc RGS |
7039 | PL_lex_op = readline_overriden |
7040 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7041 | append_elem(OP_LIST, | |
7042 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
7043 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7044 | : (OP*)newUNOP(OP_READLINE, 0, | |
7045 | newUNOP(OP_RV2SV, 0, | |
7046 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 7047 | } |
7c6fadd6 RGS |
7048 | if (!readline_overriden) |
7049 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 7050 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
7051 | yylval.ival = OP_NULL; |
7052 | } | |
02aa26ce NT |
7053 | |
7054 | /* If it's none of the above, it must be a literal filehandle | |
7055 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 7056 | else { |
85e6fe83 | 7057 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
7058 | PL_lex_op = readline_overriden |
7059 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7060 | append_elem(OP_LIST, | |
7061 | newGVOP(OP_GV, 0, gv), | |
7062 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7063 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
7064 | yylval.ival = OP_NULL; |
7065 | } | |
7066 | } | |
02aa26ce | 7067 | |
79072805 LW |
7068 | return s; |
7069 | } | |
7070 | ||
02aa26ce NT |
7071 | |
7072 | /* scan_str | |
7073 | takes: start position in buffer | |
09bef843 SB |
7074 | keep_quoted preserve \ on the embedded delimiter(s) |
7075 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
7076 | returns: position to continue reading from buffer |
7077 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
7078 | updates the read buffer. | |
7079 | ||
7080 | This subroutine pulls a string out of the input. It is called for: | |
7081 | q single quotes q(literal text) | |
7082 | ' single quotes 'literal text' | |
7083 | qq double quotes qq(interpolate $here please) | |
7084 | " double quotes "interpolate $here please" | |
7085 | qx backticks qx(/bin/ls -l) | |
7086 | ` backticks `/bin/ls -l` | |
7087 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
7088 | m// regexp match m/this/ | |
7089 | s/// regexp substitute s/this/that/ | |
7090 | tr/// string transliterate tr/this/that/ | |
7091 | y/// string transliterate y/this/that/ | |
7092 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 7093 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
7094 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
7095 | ||
7096 | In most of these cases (all but <>, patterns and transliterate) | |
7097 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
7098 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
7099 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
7100 | calls scan_str(). | |
4e553d73 | 7101 | |
02aa26ce NT |
7102 | It skips whitespace before the string starts, and treats the first |
7103 | character as the delimiter. If the delimiter is one of ([{< then | |
7104 | the corresponding "close" character )]}> is used as the closing | |
7105 | delimiter. It allows quoting of delimiters, and if the string has | |
7106 | balanced delimiters ([{<>}]) it allows nesting. | |
7107 | ||
37fd879b HS |
7108 | On success, the SV with the resulting string is put into lex_stuff or, |
7109 | if that is already non-NULL, into lex_repl. The second case occurs only | |
7110 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
7111 | For convenience, the terminating delimiter character is stuffed into | |
7112 | SvIVX of the SV. | |
02aa26ce NT |
7113 | */ |
7114 | ||
76e3520e | 7115 | STATIC char * |
09bef843 | 7116 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 7117 | { |
02aa26ce NT |
7118 | SV *sv; /* scalar value: string */ |
7119 | char *tmps; /* temp string, used for delimiter matching */ | |
7120 | register char *s = start; /* current position in the buffer */ | |
7121 | register char term; /* terminating character */ | |
7122 | register char *to; /* current position in the sv's data */ | |
7123 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 7124 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e IH |
7125 | I32 termcode; /* terminating char. code */ |
7126 | U8 termstr[UTF8_MAXLEN]; /* terminating string */ | |
7127 | STRLEN termlen; /* length of terminating string */ | |
7128 | char *last = NULL; /* last position for nesting bracket */ | |
02aa26ce NT |
7129 | |
7130 | /* skip space before the delimiter */ | |
fb73857a | 7131 | if (isSPACE(*s)) |
7132 | s = skipspace(s); | |
02aa26ce NT |
7133 | |
7134 | /* mark where we are, in case we need to report errors */ | |
79072805 | 7135 | CLINE; |
02aa26ce NT |
7136 | |
7137 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 7138 | term = *s; |
220e2d4e IH |
7139 | if (!UTF) { |
7140 | termcode = termstr[0] = term; | |
7141 | termlen = 1; | |
7142 | } | |
7143 | else { | |
f3b9ce0f | 7144 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
7145 | Copy(s, termstr, termlen, U8); |
7146 | if (!UTF8_IS_INVARIANT(term)) | |
7147 | has_utf8 = TRUE; | |
7148 | } | |
b1c7b182 | 7149 | |
02aa26ce | 7150 | /* mark where we are */ |
57843af0 | 7151 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 7152 | PL_multi_open = term; |
02aa26ce NT |
7153 | |
7154 | /* find corresponding closing delimiter */ | |
93a17b20 | 7155 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
7156 | termcode = termstr[0] = term = tmps[5]; |
7157 | ||
3280af22 | 7158 | PL_multi_close = term; |
79072805 | 7159 | |
02aa26ce | 7160 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
7161 | assuming. 79 is the SV's initial length. What a random number. */ |
7162 | sv = NEWSV(87,79); | |
ed6116ce | 7163 | sv_upgrade(sv, SVt_PVIV); |
220e2d4e | 7164 | SvIVX(sv) = termcode; |
a0d0e21e | 7165 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
7166 | |
7167 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 7168 | if (keep_delims) |
220e2d4e IH |
7169 | sv_catpvn(sv, s, termlen); |
7170 | s += termlen; | |
93a17b20 | 7171 | for (;;) { |
220e2d4e IH |
7172 | if (PL_encoding && !UTF) { |
7173 | bool cont = TRUE; | |
7174 | ||
7175 | while (cont) { | |
7176 | int offset = s - SvPVX(PL_linestr); | |
7177 | bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, | |
f3b9ce0f | 7178 | &offset, (char*)termstr, termlen); |
220e2d4e IH |
7179 | char *ns = SvPVX(PL_linestr) + offset; |
7180 | char *svlast = SvEND(sv) - 1; | |
7181 | ||
7182 | for (; s < ns; s++) { | |
7183 | if (*s == '\n' && !PL_rsfp) | |
7184 | CopLINE_inc(PL_curcop); | |
7185 | } | |
7186 | if (!found) | |
7187 | goto read_more_line; | |
7188 | else { | |
7189 | /* handle quoted delimiters */ | |
52327caf | 7190 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
220e2d4e IH |
7191 | char *t; |
7192 | for (t = svlast-2; t >= SvPVX(sv) && *t == '\\';) | |
7193 | t--; | |
7194 | if ((svlast-1 - t) % 2) { | |
7195 | if (!keep_quoted) { | |
7196 | *(svlast-1) = term; | |
7197 | *svlast = '\0'; | |
7198 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7199 | } | |
7200 | continue; | |
7201 | } | |
7202 | } | |
7203 | if (PL_multi_open == PL_multi_close) { | |
7204 | cont = FALSE; | |
7205 | } | |
7206 | else { | |
7207 | char *t, *w; | |
7208 | if (!last) | |
7209 | last = SvPVX(sv); | |
7210 | for (w = t = last; t < svlast; w++, t++) { | |
7211 | /* At here, all closes are "was quoted" one, | |
7212 | so we don't check PL_multi_close. */ | |
7213 | if (*t == '\\') { | |
7214 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
7215 | t++; | |
7216 | else | |
7217 | *w++ = *t++; | |
7218 | } | |
7219 | else if (*t == PL_multi_open) | |
7220 | brackets++; | |
7221 | ||
7222 | *w = *t; | |
7223 | } | |
7224 | if (w < t) { | |
7225 | *w++ = term; | |
7226 | *w = '\0'; | |
7227 | SvCUR_set(sv, w - SvPVX(sv)); | |
7228 | } | |
7229 | last = w; | |
7230 | if (--brackets <= 0) | |
7231 | cont = FALSE; | |
7232 | } | |
7233 | } | |
7234 | } | |
7235 | if (!keep_delims) { | |
7236 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7237 | *SvEND(sv) = '\0'; | |
7238 | } | |
7239 | break; | |
7240 | } | |
7241 | ||
02aa26ce | 7242 | /* extend sv if need be */ |
3280af22 | 7243 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 7244 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 7245 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 7246 | |
02aa26ce | 7247 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
7248 | if (PL_multi_open == PL_multi_close) { |
7249 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 7250 | /* embedded newlines increment the current line number */ |
3280af22 | 7251 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7252 | CopLINE_inc(PL_curcop); |
02aa26ce | 7253 | /* handle quoted delimiters */ |
3280af22 | 7254 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 7255 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 7256 | s++; |
02aa26ce | 7257 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
7258 | else |
7259 | *to++ = *s++; | |
7260 | } | |
02aa26ce NT |
7261 | /* terminate when run out of buffer (the for() condition), or |
7262 | have found the terminator */ | |
220e2d4e IH |
7263 | else if (*s == term) { |
7264 | if (termlen == 1) | |
7265 | break; | |
f3b9ce0f | 7266 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
7267 | break; |
7268 | } | |
63cd0674 | 7269 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7270 | has_utf8 = TRUE; |
93a17b20 LW |
7271 | *to = *s; |
7272 | } | |
7273 | } | |
02aa26ce NT |
7274 | |
7275 | /* if the terminator isn't the same as the start character (e.g., | |
7276 | matched brackets), we have to allow more in the quoting, and | |
7277 | be prepared for nested brackets. | |
7278 | */ | |
93a17b20 | 7279 | else { |
02aa26ce | 7280 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 7281 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 7282 | /* embedded newlines increment the line count */ |
3280af22 | 7283 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7284 | CopLINE_inc(PL_curcop); |
02aa26ce | 7285 | /* backslashes can escape the open or closing characters */ |
3280af22 | 7286 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
7287 | if (!keep_quoted && |
7288 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
7289 | s++; |
7290 | else | |
7291 | *to++ = *s++; | |
7292 | } | |
02aa26ce | 7293 | /* allow nested opens and closes */ |
3280af22 | 7294 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 7295 | break; |
3280af22 | 7296 | else if (*s == PL_multi_open) |
93a17b20 | 7297 | brackets++; |
63cd0674 | 7298 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7299 | has_utf8 = TRUE; |
93a17b20 LW |
7300 | *to = *s; |
7301 | } | |
7302 | } | |
02aa26ce | 7303 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 7304 | *to = '\0'; |
463ee0b2 | 7305 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 7306 | |
02aa26ce NT |
7307 | /* |
7308 | * this next chunk reads more into the buffer if we're not done yet | |
7309 | */ | |
7310 | ||
b1c7b182 GS |
7311 | if (s < PL_bufend) |
7312 | break; /* handle case where we are done yet :-) */ | |
79072805 | 7313 | |
6a27c188 | 7314 | #ifndef PERL_STRICT_CR |
f63a84b2 | 7315 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
7316 | if ((to[-2] == '\r' && to[-1] == '\n') || |
7317 | (to[-2] == '\n' && to[-1] == '\r')) | |
7318 | { | |
f63a84b2 LW |
7319 | to[-2] = '\n'; |
7320 | to--; | |
7321 | SvCUR_set(sv, to - SvPVX(sv)); | |
7322 | } | |
7323 | else if (to[-1] == '\r') | |
7324 | to[-1] = '\n'; | |
7325 | } | |
7326 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7327 | to[-1] = '\n'; | |
7328 | #endif | |
7329 | ||
220e2d4e | 7330 | read_more_line: |
02aa26ce NT |
7331 | /* if we're out of file, or a read fails, bail and reset the current |
7332 | line marker so we can report where the unterminated string began | |
7333 | */ | |
3280af22 NIS |
7334 | if (!PL_rsfp || |
7335 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7336 | sv_free(sv); |
eb160463 | 7337 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7338 | return Nullch; |
7339 | } | |
02aa26ce | 7340 | /* we read a line, so increment our line counter */ |
57843af0 | 7341 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7342 | |
02aa26ce | 7343 | /* update debugger info */ |
3280af22 | 7344 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7345 | SV *sv = NEWSV(88,0); |
7346 | ||
93a17b20 | 7347 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7348 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7349 | (void)SvIOK_on(sv); |
7350 | SvIVX(sv) = 0; | |
57843af0 | 7351 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7352 | } |
a0ed51b3 | 7353 | |
3280af22 NIS |
7354 | /* having changed the buffer, we must update PL_bufend */ |
7355 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7356 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7357 | } |
4e553d73 | 7358 | |
02aa26ce NT |
7359 | /* at this point, we have successfully read the delimited string */ |
7360 | ||
220e2d4e IH |
7361 | if (!PL_encoding || UTF) { |
7362 | if (keep_delims) | |
7363 | sv_catpvn(sv, s, termlen); | |
7364 | s += termlen; | |
7365 | } | |
7366 | if (has_utf8 || PL_encoding) | |
b1c7b182 | 7367 | SvUTF8_on(sv); |
d0063567 | 7368 | |
57843af0 | 7369 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
7370 | |
7371 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7372 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7373 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7374 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7375 | } |
02aa26ce NT |
7376 | |
7377 | /* decide whether this is the first or second quoted string we've read | |
7378 | for this op | |
7379 | */ | |
4e553d73 | 7380 | |
3280af22 NIS |
7381 | if (PL_lex_stuff) |
7382 | PL_lex_repl = sv; | |
79072805 | 7383 | else |
3280af22 | 7384 | PL_lex_stuff = sv; |
378cc40b LW |
7385 | return s; |
7386 | } | |
7387 | ||
02aa26ce NT |
7388 | /* |
7389 | scan_num | |
7390 | takes: pointer to position in buffer | |
7391 | returns: pointer to new position in buffer | |
7392 | side-effects: builds ops for the constant in yylval.op | |
7393 | ||
7394 | Read a number in any of the formats that Perl accepts: | |
7395 | ||
7fd134d9 JH |
7396 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7397 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7398 | 0b[01](_?[01])* |
7399 | 0[0-7](_?[0-7])* | |
7400 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7401 | |
3280af22 | 7402 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7403 | thing it reads. |
7404 | ||
7405 | If it reads a number without a decimal point or an exponent, it will | |
7406 | try converting the number to an integer and see if it can do so | |
7407 | without loss of precision. | |
7408 | */ | |
4e553d73 | 7409 | |
378cc40b | 7410 | char * |
b73d6f50 | 7411 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7412 | { |
02aa26ce NT |
7413 | register char *s = start; /* current position in buffer */ |
7414 | register char *d; /* destination in temp buffer */ | |
7415 | register char *e; /* end of temp buffer */ | |
86554af2 | 7416 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7417 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7418 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7419 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7420 | static char number_too_long[] = "Number too long"; |
378cc40b | 7421 | |
02aa26ce NT |
7422 | /* We use the first character to decide what type of number this is */ |
7423 | ||
378cc40b | 7424 | switch (*s) { |
79072805 | 7425 | default: |
cea2e8a9 | 7426 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7427 | |
02aa26ce | 7428 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7429 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7430 | case '0': |
7431 | { | |
02aa26ce NT |
7432 | /* variables: |
7433 | u holds the "number so far" | |
4f19785b WSI |
7434 | shift the power of 2 of the base |
7435 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7436 | overflowed was the number more than we can hold? |
7437 | ||
7438 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7439 | we in octal/hex/binary?" indicator to disallow hex characters |
7440 | when in octal mode. | |
02aa26ce | 7441 | */ |
9e24b6e2 JH |
7442 | NV n = 0.0; |
7443 | UV u = 0; | |
79072805 | 7444 | I32 shift; |
9e24b6e2 | 7445 | bool overflowed = FALSE; |
61f33854 | 7446 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
9e24b6e2 JH |
7447 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
7448 | static char* bases[5] = { "", "binary", "", "octal", | |
7449 | "hexadecimal" }; | |
7450 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7451 | "Hexadecimal" }; | |
7452 | static char *maxima[5] = { "", | |
7453 | "0b11111111111111111111111111111111", | |
7454 | "", | |
893fe2c2 | 7455 | "037777777777", |
9e24b6e2 JH |
7456 | "0xffffffff" }; |
7457 | char *base, *Base, *max; | |
378cc40b | 7458 | |
02aa26ce | 7459 | /* check for hex */ |
378cc40b LW |
7460 | if (s[1] == 'x') { |
7461 | shift = 4; | |
7462 | s += 2; | |
61f33854 | 7463 | just_zero = FALSE; |
4f19785b WSI |
7464 | } else if (s[1] == 'b') { |
7465 | shift = 1; | |
7466 | s += 2; | |
61f33854 | 7467 | just_zero = FALSE; |
378cc40b | 7468 | } |
02aa26ce | 7469 | /* check for a decimal in disguise */ |
b78218b7 | 7470 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7471 | goto decimal; |
02aa26ce | 7472 | /* so it must be octal */ |
928753ea | 7473 | else { |
378cc40b | 7474 | shift = 3; |
928753ea JH |
7475 | s++; |
7476 | } | |
7477 | ||
7478 | if (*s == '_') { | |
7479 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7480 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7481 | "Misplaced _ in number"); |
7482 | lastub = s++; | |
7483 | } | |
9e24b6e2 JH |
7484 | |
7485 | base = bases[shift]; | |
7486 | Base = Bases[shift]; | |
7487 | max = maxima[shift]; | |
02aa26ce | 7488 | |
4f19785b | 7489 | /* read the rest of the number */ |
378cc40b | 7490 | for (;;) { |
9e24b6e2 | 7491 | /* x is used in the overflow test, |
893fe2c2 | 7492 | b is the digit we're adding on. */ |
9e24b6e2 | 7493 | UV x, b; |
55497cff | 7494 | |
378cc40b | 7495 | switch (*s) { |
02aa26ce NT |
7496 | |
7497 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7498 | default: |
7499 | goto out; | |
02aa26ce | 7500 | |
928753ea | 7501 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7502 | case '_': |
928753ea | 7503 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7504 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7505 | "Misplaced _ in number"); |
7506 | lastub = s++; | |
de3bb511 | 7507 | break; |
02aa26ce NT |
7508 | |
7509 | /* 8 and 9 are not octal */ | |
378cc40b | 7510 | case '8': case '9': |
4f19785b | 7511 | if (shift == 3) |
cea2e8a9 | 7512 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7513 | /* FALL THROUGH */ |
02aa26ce NT |
7514 | |
7515 | /* octal digits */ | |
4f19785b | 7516 | case '2': case '3': case '4': |
378cc40b | 7517 | case '5': case '6': case '7': |
4f19785b | 7518 | if (shift == 1) |
cea2e8a9 | 7519 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7520 | /* FALL THROUGH */ |
7521 | ||
7522 | case '0': case '1': | |
02aa26ce | 7523 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7524 | goto digit; |
02aa26ce NT |
7525 | |
7526 | /* hex digits */ | |
378cc40b LW |
7527 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7528 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7529 | /* make sure they said 0x */ |
378cc40b LW |
7530 | if (shift != 4) |
7531 | goto out; | |
55497cff | 7532 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7533 | |
7534 | /* Prepare to put the digit we have onto the end | |
7535 | of the number so far. We check for overflows. | |
7536 | */ | |
7537 | ||
55497cff | 7538 | digit: |
61f33854 | 7539 | just_zero = FALSE; |
9e24b6e2 JH |
7540 | if (!overflowed) { |
7541 | x = u << shift; /* make room for the digit */ | |
7542 | ||
7543 | if ((x >> shift) != u | |
7544 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7545 | overflowed = TRUE; |
7546 | n = (NV) u; | |
767a6a26 | 7547 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7548 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7549 | "Integer overflow in %s number", |
7550 | base); | |
7551 | } else | |
7552 | u = x | b; /* add the digit to the end */ | |
7553 | } | |
7554 | if (overflowed) { | |
7555 | n *= nvshift[shift]; | |
7556 | /* If an NV has not enough bits in its | |
7557 | * mantissa to represent an UV this summing of | |
7558 | * small low-order numbers is a waste of time | |
7559 | * (because the NV cannot preserve the | |
7560 | * low-order bits anyway): we could just | |
7561 | * remember when did we overflow and in the | |
7562 | * end just multiply n by the right | |
7563 | * amount. */ | |
7564 | n += (NV) b; | |
55497cff | 7565 | } |
378cc40b LW |
7566 | break; |
7567 | } | |
7568 | } | |
02aa26ce NT |
7569 | |
7570 | /* if we get here, we had success: make a scalar value from | |
7571 | the number. | |
7572 | */ | |
378cc40b | 7573 | out: |
928753ea JH |
7574 | |
7575 | /* final misplaced underbar check */ | |
7576 | if (s[-1] == '_') { | |
7577 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7578 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7579 | } |
7580 | ||
79072805 | 7581 | sv = NEWSV(92,0); |
9e24b6e2 | 7582 | if (overflowed) { |
767a6a26 | 7583 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7584 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7585 | "%s number > %s non-portable", |
7586 | Base, max); | |
7587 | sv_setnv(sv, n); | |
7588 | } | |
7589 | else { | |
15041a67 | 7590 | #if UVSIZE > 4 |
767a6a26 | 7591 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7592 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7593 | "%s number > %s non-portable", |
7594 | Base, max); | |
2cc4c2dc | 7595 | #endif |
9e24b6e2 JH |
7596 | sv_setuv(sv, u); |
7597 | } | |
61f33854 RGS |
7598 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
7599 | sv = new_constant(start, s - start, "integer", | |
7600 | sv, Nullsv, NULL); | |
7601 | else if (PL_hints & HINT_NEW_BINARY) | |
b3ac6de7 | 7602 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7603 | } |
7604 | break; | |
02aa26ce NT |
7605 | |
7606 | /* | |
7607 | handle decimal numbers. | |
7608 | we're also sent here when we read a 0 as the first digit | |
7609 | */ | |
378cc40b LW |
7610 | case '1': case '2': case '3': case '4': case '5': |
7611 | case '6': case '7': case '8': case '9': case '.': | |
7612 | decimal: | |
3280af22 NIS |
7613 | d = PL_tokenbuf; |
7614 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7615 | floatit = FALSE; |
02aa26ce NT |
7616 | |
7617 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7618 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7619 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7620 | if -w is on |
7621 | */ | |
93a17b20 | 7622 | if (*s == '_') { |
928753ea | 7623 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7624 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7625 | "Misplaced _ in number"); |
7626 | lastub = s++; | |
93a17b20 | 7627 | } |
fc36a67e | 7628 | else { |
02aa26ce | 7629 | /* check for end of fixed-length buffer */ |
fc36a67e | 7630 | if (d >= e) |
cea2e8a9 | 7631 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7632 | /* if we're ok, copy the character */ |
378cc40b | 7633 | *d++ = *s++; |
fc36a67e | 7634 | } |
378cc40b | 7635 | } |
02aa26ce NT |
7636 | |
7637 | /* final misplaced underbar check */ | |
928753ea | 7638 | if (lastub && s == lastub + 1) { |
d008e5eb | 7639 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7640 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7641 | } |
02aa26ce NT |
7642 | |
7643 | /* read a decimal portion if there is one. avoid | |
7644 | 3..5 being interpreted as the number 3. followed | |
7645 | by .5 | |
7646 | */ | |
2f3197b3 | 7647 | if (*s == '.' && s[1] != '.') { |
79072805 | 7648 | floatit = TRUE; |
378cc40b | 7649 | *d++ = *s++; |
02aa26ce | 7650 | |
928753ea JH |
7651 | if (*s == '_') { |
7652 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7653 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7654 | "Misplaced _ in number"); |
7655 | lastub = s; | |
7656 | } | |
7657 | ||
7658 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7659 | */ |
fc36a67e | 7660 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7661 | /* fixed length buffer check */ |
fc36a67e | 7662 | if (d >= e) |
cea2e8a9 | 7663 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7664 | if (*s == '_') { |
7665 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7666 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7667 | "Misplaced _ in number"); |
7668 | lastub = s; | |
7669 | } | |
7670 | else | |
fc36a67e | 7671 | *d++ = *s; |
378cc40b | 7672 | } |
928753ea JH |
7673 | /* fractional part ending in underbar? */ |
7674 | if (s[-1] == '_') { | |
7675 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7676 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7677 | "Misplaced _ in number"); |
7678 | } | |
dd629d5b GS |
7679 | if (*s == '.' && isDIGIT(s[1])) { |
7680 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7681 | s = start; |
dd629d5b GS |
7682 | goto vstring; |
7683 | } | |
378cc40b | 7684 | } |
02aa26ce NT |
7685 | |
7686 | /* read exponent part, if present */ | |
3792a11b | 7687 | if ((*s == 'e' || *s == 'E') && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7688 | floatit = TRUE; |
7689 | s++; | |
02aa26ce NT |
7690 | |
7691 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7692 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7693 | |
7fd134d9 JH |
7694 | /* stray preinitial _ */ |
7695 | if (*s == '_') { | |
7696 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7697 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7698 | "Misplaced _ in number"); |
7699 | lastub = s++; | |
7700 | } | |
7701 | ||
02aa26ce | 7702 | /* allow positive or negative exponent */ |
378cc40b LW |
7703 | if (*s == '+' || *s == '-') |
7704 | *d++ = *s++; | |
02aa26ce | 7705 | |
7fd134d9 JH |
7706 | /* stray initial _ */ |
7707 | if (*s == '_') { | |
7708 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7709 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7710 | "Misplaced _ in number"); |
7711 | lastub = s++; | |
7712 | } | |
7713 | ||
7fd134d9 JH |
7714 | /* read digits of exponent */ |
7715 | while (isDIGIT(*s) || *s == '_') { | |
7716 | if (isDIGIT(*s)) { | |
7717 | if (d >= e) | |
7718 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7719 | *d++ = *s++; |
7fd134d9 JH |
7720 | } |
7721 | else { | |
7722 | if (ckWARN(WARN_SYNTAX) && | |
7723 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7724 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7725 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7726 | "Misplaced _ in number"); |
b3b48e3e | 7727 | lastub = s++; |
7fd134d9 | 7728 | } |
7fd134d9 | 7729 | } |
378cc40b | 7730 | } |
02aa26ce | 7731 | |
02aa26ce NT |
7732 | |
7733 | /* make an sv from the string */ | |
79072805 | 7734 | sv = NEWSV(92,0); |
097ee67d | 7735 | |
0b7fceb9 | 7736 | /* |
58bb9ec3 NC |
7737 | We try to do an integer conversion first if no characters |
7738 | indicating "float" have been found. | |
0b7fceb9 MU |
7739 | */ |
7740 | ||
7741 | if (!floatit) { | |
58bb9ec3 NC |
7742 | UV uv; |
7743 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7744 | ||
7745 | if (flags == IS_NUMBER_IN_UV) { | |
7746 | if (uv <= IV_MAX) | |
86554af2 | 7747 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7748 | else |
c239479b | 7749 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7750 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7751 | if (uv <= (UV) IV_MIN) | |
7752 | sv_setiv(sv, -(IV)uv); | |
7753 | else | |
7754 | floatit = TRUE; | |
7755 | } else | |
7756 | floatit = TRUE; | |
7757 | } | |
0b7fceb9 | 7758 | if (floatit) { |
58bb9ec3 NC |
7759 | /* terminate the string */ |
7760 | *d = '\0'; | |
86554af2 JH |
7761 | nv = Atof(PL_tokenbuf); |
7762 | sv_setnv(sv, nv); | |
7763 | } | |
86554af2 | 7764 | |
b8403495 JH |
7765 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7766 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7767 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7768 | (floatit ? "float" : "integer"), |
7769 | sv, Nullsv, NULL); | |
378cc40b | 7770 | break; |
0b7fceb9 | 7771 | |
e312add1 | 7772 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7773 | case 'v': |
dd629d5b | 7774 | vstring: |
f4758303 | 7775 | sv = NEWSV(92,5); /* preallocate storage space */ |
b0f01acb | 7776 | s = scan_vstring(s,sv); |
a7cb1f99 | 7777 | break; |
79072805 | 7778 | } |
a687059c | 7779 | |
02aa26ce NT |
7780 | /* make the op for the constant and return */ |
7781 | ||
a86a20aa | 7782 | if (sv) |
b73d6f50 | 7783 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7784 | else |
b73d6f50 | 7785 | lvalp->opval = Nullop; |
a687059c | 7786 | |
378cc40b LW |
7787 | return s; |
7788 | } | |
7789 | ||
76e3520e | 7790 | STATIC char * |
cea2e8a9 | 7791 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7792 | { |
79072805 | 7793 | register char *eol; |
378cc40b | 7794 | register char *t; |
79cb57f6 | 7795 | SV *stuff = newSVpvn("",0); |
79072805 | 7796 | bool needargs = FALSE; |
c5ee2135 | 7797 | bool eofmt = FALSE; |
378cc40b | 7798 | |
79072805 | 7799 | while (!needargs) { |
a1b95068 | 7800 | if (*s == '.') { |
79072805 | 7801 | /*SUPPRESS 530*/ |
51882d45 | 7802 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7803 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7804 | #else |
bf4acbe4 | 7805 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7806 | #endif |
c5ee2135 WL |
7807 | if (*t == '\n' || t == PL_bufend) { |
7808 | eofmt = TRUE; | |
79072805 | 7809 | break; |
c5ee2135 | 7810 | } |
79072805 | 7811 | } |
3280af22 | 7812 | if (PL_in_eval && !PL_rsfp) { |
a1b95068 | 7813 | eol = memchr(s,'\n',PL_bufend-s); |
0f85fab0 | 7814 | if (!eol++) |
3280af22 | 7815 | eol = PL_bufend; |
0f85fab0 LW |
7816 | } |
7817 | else | |
3280af22 | 7818 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7819 | if (*s != '#') { |
a0d0e21e LW |
7820 | for (t = s; t < eol; t++) { |
7821 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7822 | needargs = FALSE; | |
7823 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7824 | } |
a0d0e21e LW |
7825 | if (*t == '@' || *t == '^') |
7826 | needargs = TRUE; | |
378cc40b | 7827 | } |
7121b347 MG |
7828 | if (eol > s) { |
7829 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7830 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7831 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7832 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7833 | end[-2] = '\n'; | |
7834 | end[-1] = '\0'; | |
7835 | SvCUR(stuff)--; | |
7836 | } | |
2dc4c65b | 7837 | #endif |
7121b347 MG |
7838 | } |
7839 | else | |
7840 | break; | |
79072805 LW |
7841 | } |
7842 | s = eol; | |
3280af22 NIS |
7843 | if (PL_rsfp) { |
7844 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7845 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7846 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7847 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7848 | if (!s) { |
3280af22 | 7849 | s = PL_bufptr; |
378cc40b LW |
7850 | break; |
7851 | } | |
378cc40b | 7852 | } |
463ee0b2 | 7853 | incline(s); |
79072805 | 7854 | } |
a0d0e21e LW |
7855 | enough: |
7856 | if (SvCUR(stuff)) { | |
3280af22 | 7857 | PL_expect = XTERM; |
79072805 | 7858 | if (needargs) { |
3280af22 NIS |
7859 | PL_lex_state = LEX_NORMAL; |
7860 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7861 | force_next(','); |
7862 | } | |
a0d0e21e | 7863 | else |
3280af22 | 7864 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c IH |
7865 | if (!IN_BYTES) { |
7866 | if (UTF && is_utf8_string((U8*)SvPVX(stuff), SvCUR(stuff))) | |
7867 | SvUTF8_on(stuff); | |
7868 | else if (PL_encoding) | |
7869 | sv_recode_to_utf8(stuff, PL_encoding); | |
7870 | } | |
3280af22 | 7871 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 7872 | force_next(THING); |
3280af22 | 7873 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7874 | force_next(LSTOP); |
378cc40b | 7875 | } |
79072805 | 7876 | else { |
8990e307 | 7877 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
7878 | if (eofmt) |
7879 | PL_lex_formbrack = 0; | |
3280af22 | 7880 | PL_bufptr = s; |
79072805 LW |
7881 | } |
7882 | return s; | |
378cc40b | 7883 | } |
a687059c | 7884 | |
76e3520e | 7885 | STATIC void |
cea2e8a9 | 7886 | S_set_csh(pTHX) |
a687059c | 7887 | { |
ae986130 | 7888 | #ifdef CSH |
3280af22 NIS |
7889 | if (!PL_cshlen) |
7890 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7891 | #endif |
a687059c | 7892 | } |
463ee0b2 | 7893 | |
ba6d6ac9 | 7894 | I32 |
864dbfa3 | 7895 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7896 | { |
3280af22 NIS |
7897 | I32 oldsavestack_ix = PL_savestack_ix; |
7898 | CV* outsidecv = PL_compcv; | |
8990e307 | 7899 | |
3280af22 NIS |
7900 | if (PL_compcv) { |
7901 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7902 | } |
7766f137 | 7903 | SAVEI32(PL_subline); |
3280af22 | 7904 | save_item(PL_subname); |
3280af22 | 7905 | SAVESPTR(PL_compcv); |
3280af22 NIS |
7906 | |
7907 | PL_compcv = (CV*)NEWSV(1104,0); | |
7908 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7909 | CvFLAGS(PL_compcv) |= flags; | |
7910 | ||
57843af0 | 7911 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 7912 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
3280af22 | 7913 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); |
a3985cdc | 7914 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 7915 | |
8990e307 LW |
7916 | return oldsavestack_ix; |
7917 | } | |
7918 | ||
084592ab CN |
7919 | #ifdef __SC__ |
7920 | #pragma segment Perl_yylex | |
7921 | #endif | |
8990e307 | 7922 | int |
864dbfa3 | 7923 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7924 | { |
faef0170 | 7925 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7926 | yyerror(s); |
faef0170 | 7927 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7928 | return 0; |
8990e307 LW |
7929 | } |
7930 | ||
7931 | int | |
864dbfa3 | 7932 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7933 | { |
68dc0745 | 7934 | char *where = NULL; |
7935 | char *context = NULL; | |
7936 | int contlen = -1; | |
46fc3d4c | 7937 | SV *msg; |
463ee0b2 | 7938 | |
3280af22 | 7939 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7940 | where = "at EOF"; |
3280af22 NIS |
7941 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7942 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7943 | /* |
7944 | Only for NetWare: | |
7945 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7946 | when the script has error such as not having the closing quotes like: | |
7947 | if ($var eq "value) | |
7948 | Checking of white spaces is anyway done in NetWare code. | |
7949 | */ | |
7950 | #ifndef NETWARE | |
3280af22 NIS |
7951 | while (isSPACE(*PL_oldoldbufptr)) |
7952 | PL_oldoldbufptr++; | |
f355267c | 7953 | #endif |
3280af22 NIS |
7954 | context = PL_oldoldbufptr; |
7955 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7956 | } |
3280af22 NIS |
7957 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7958 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7959 | /* |
7960 | Only for NetWare: | |
7961 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7962 | when the script has error such as not having the closing quotes like: | |
7963 | if ($var eq "value) | |
7964 | Checking of white spaces is anyway done in NetWare code. | |
7965 | */ | |
7966 | #ifndef NETWARE | |
3280af22 NIS |
7967 | while (isSPACE(*PL_oldbufptr)) |
7968 | PL_oldbufptr++; | |
f355267c | 7969 | #endif |
3280af22 NIS |
7970 | context = PL_oldbufptr; |
7971 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7972 | } |
7973 | else if (yychar > 255) | |
68dc0745 | 7974 | where = "next token ???"; |
12fbd33b | 7975 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
7976 | if (PL_lex_state == LEX_NORMAL || |
7977 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7978 | where = "at end of line"; |
3280af22 | 7979 | else if (PL_lex_inpat) |
68dc0745 | 7980 | where = "within pattern"; |
463ee0b2 | 7981 | else |
68dc0745 | 7982 | where = "within string"; |
463ee0b2 | 7983 | } |
46fc3d4c | 7984 | else { |
79cb57f6 | 7985 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7986 | if (yychar < 32) |
cea2e8a9 | 7987 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7988 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7989 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7990 | else |
cea2e8a9 | 7991 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7992 | where = SvPVX(where_sv); |
463ee0b2 | 7993 | } |
46fc3d4c | 7994 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7995 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7996 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7997 | if (context) |
cea2e8a9 | 7998 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7999 | else |
cea2e8a9 | 8000 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 8001 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 8002 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 8003 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 8004 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 8005 | PL_multi_end = 0; |
a0d0e21e | 8006 | } |
56da5a46 RGS |
8007 | if (PL_in_eval & EVAL_WARNONLY && ckWARN_d(WARN_SYNTAX)) |
8008 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, msg); | |
463ee0b2 | 8009 | else |
5a844595 | 8010 | qerror(msg); |
c7d6bfb2 GS |
8011 | if (PL_error_count >= 10) { |
8012 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 8013 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 8014 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
8015 | else |
8016 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 8017 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 8018 | } |
3280af22 NIS |
8019 | PL_in_my = 0; |
8020 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
8021 | return 0; |
8022 | } | |
084592ab CN |
8023 | #ifdef __SC__ |
8024 | #pragma segment Main | |
8025 | #endif | |
4e35701f | 8026 | |
b250498f | 8027 | STATIC char* |
3ae08724 | 8028 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 8029 | { |
b250498f GS |
8030 | STRLEN slen; |
8031 | slen = SvCUR(PL_linestr); | |
7aa207d6 | 8032 | switch (s[0]) { |
4e553d73 NIS |
8033 | case 0xFF: |
8034 | if (s[1] == 0xFE) { | |
7aa207d6 | 8035 | /* UTF-16 little-endian? (or UTF32-LE?) */ |
3ae08724 | 8036 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
7aa207d6 | 8037 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-LE"); |
01ec43d0 | 8038 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8039 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF16-LE script encoding (BOM)\n"); |
3ae08724 | 8040 | s += 2; |
7aa207d6 | 8041 | utf16le: |
dea0fc0b JH |
8042 | if (PL_bufend > (char*)s) { |
8043 | U8 *news; | |
8044 | I32 newlen; | |
8045 | ||
8046 | filter_add(utf16rev_textfilter, NULL); | |
8047 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8048 | utf16_to_utf8_reversed(s, news, |
8049 | PL_bufend - (char*)s - 1, | |
8050 | &newlen); | |
7aa207d6 | 8051 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8052 | Safefree(news); |
7aa207d6 JH |
8053 | SvUTF8_on(PL_linestr); |
8054 | s = (U8*)SvPVX(PL_linestr); | |
8055 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8056 | } |
b250498f | 8057 | #else |
7aa207d6 | 8058 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-LE"); |
b250498f | 8059 | #endif |
01ec43d0 GS |
8060 | } |
8061 | break; | |
78ae23f5 | 8062 | case 0xFE: |
7aa207d6 | 8063 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 8064 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8065 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b | 8066 | s += 2; |
7aa207d6 | 8067 | utf16be: |
dea0fc0b JH |
8068 | if (PL_bufend > (char *)s) { |
8069 | U8 *news; | |
8070 | I32 newlen; | |
8071 | ||
8072 | filter_add(utf16_textfilter, NULL); | |
8073 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8074 | utf16_to_utf8(s, news, |
8075 | PL_bufend - (char*)s, | |
8076 | &newlen); | |
7aa207d6 | 8077 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8078 | Safefree(news); |
7aa207d6 JH |
8079 | SvUTF8_on(PL_linestr); |
8080 | s = (U8*)SvPVX(PL_linestr); | |
8081 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8082 | } |
b250498f | 8083 | #else |
7aa207d6 | 8084 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-BE"); |
b250498f | 8085 | #endif |
01ec43d0 GS |
8086 | } |
8087 | break; | |
3ae08724 GS |
8088 | case 0xEF: |
8089 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 8090 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
8091 | s += 3; /* UTF-8 */ |
8092 | } | |
8093 | break; | |
8094 | case 0: | |
7aa207d6 JH |
8095 | if (slen > 3) { |
8096 | if (s[1] == 0) { | |
8097 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
8098 | /* UTF-32 big-endian */ | |
8099 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-BE"); | |
8100 | } | |
8101 | } | |
8102 | else if (s[2] == 0 && s[3] != 0) { | |
8103 | /* Leading bytes | |
8104 | * 00 xx 00 xx | |
8105 | * are a good indicator of UTF-16BE. */ | |
8106 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); | |
8107 | goto utf16be; | |
8108 | } | |
01ec43d0 | 8109 | } |
7aa207d6 JH |
8110 | default: |
8111 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
8112 | /* Leading bytes | |
8113 | * xx 00 xx 00 | |
8114 | * are a good indicator of UTF-16LE. */ | |
8115 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); | |
8116 | goto utf16le; | |
8117 | } | |
01ec43d0 | 8118 | } |
b8f84bb2 | 8119 | return (char*)s; |
b250498f | 8120 | } |
4755096e | 8121 | |
4755096e GS |
8122 | /* |
8123 | * restore_rsfp | |
8124 | * Restore a source filter. | |
8125 | */ | |
8126 | ||
8127 | static void | |
acfe0abc | 8128 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
8129 | { |
8130 | PerlIO *fp = (PerlIO*)f; | |
8131 | ||
8132 | if (PL_rsfp == PerlIO_stdin()) | |
8133 | PerlIO_clearerr(PL_rsfp); | |
8134 | else if (PL_rsfp && (PL_rsfp != fp)) | |
8135 | PerlIO_close(PL_rsfp); | |
8136 | PL_rsfp = fp; | |
8137 | } | |
6e3aabd6 GS |
8138 | |
8139 | #ifndef PERL_NO_UTF16_FILTER | |
8140 | static I32 | |
acfe0abc | 8141 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8142 | { |
1de9afcd | 8143 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8144 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8145 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8146 | "utf16_textfilter(%p): %d %d (%d)\n", | |
4fccd7c6 | 8147 | utf16_textfilter, idx, maxlen, (int) count)); |
6e3aabd6 GS |
8148 | if (count) { |
8149 | U8* tmps; | |
dea0fc0b | 8150 | I32 newlen; |
6e3aabd6 | 8151 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8152 | Copy(SvPVX(sv), tmps, old, char); |
8153 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8154 | SvCUR(sv) - old, &newlen); | |
8155 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8156 | } |
1de9afcd RGS |
8157 | DEBUG_P({sv_dump(sv);}); |
8158 | return SvCUR(sv); | |
6e3aabd6 GS |
8159 | } |
8160 | ||
8161 | static I32 | |
acfe0abc | 8162 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8163 | { |
1de9afcd | 8164 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8165 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8166 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8167 | "utf16rev_textfilter(%p): %d %d (%d)\n", | |
4fccd7c6 | 8168 | utf16rev_textfilter, idx, maxlen, (int) count)); |
6e3aabd6 GS |
8169 | if (count) { |
8170 | U8* tmps; | |
dea0fc0b | 8171 | I32 newlen; |
6e3aabd6 | 8172 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8173 | Copy(SvPVX(sv), tmps, old, char); |
8174 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8175 | SvCUR(sv) - old, &newlen); | |
8176 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8177 | } |
1de9afcd | 8178 | DEBUG_P({ sv_dump(sv); }); |
6e3aabd6 GS |
8179 | return count; |
8180 | } | |
8181 | #endif | |
9f4817db | 8182 | |
f333445c JP |
8183 | /* |
8184 | Returns a pointer to the next character after the parsed | |
8185 | vstring, as well as updating the passed in sv. | |
8186 | ||
8187 | Function must be called like | |
8188 | ||
8189 | sv = NEWSV(92,5); | |
8190 | s = scan_vstring(s,sv); | |
8191 | ||
8192 | The sv should already be large enough to store the vstring | |
8193 | passed in, for performance reasons. | |
8194 | ||
8195 | */ | |
8196 | ||
8197 | char * | |
8198 | Perl_scan_vstring(pTHX_ char *s, SV *sv) | |
8199 | { | |
8200 | char *pos = s; | |
8201 | char *start = s; | |
8202 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3e884cbf JH |
8203 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
8204 | pos++; | |
f333445c JP |
8205 | if ( *pos != '.') { |
8206 | /* this may not be a v-string if followed by => */ | |
8fc7bb1c SM |
8207 | char *next = pos; |
8208 | while (next < PL_bufend && isSPACE(*next)) | |
8209 | ++next; | |
8210 | if ((PL_bufend - next) >= 2 && *next == '=' && next[1] == '>' ) { | |
f333445c JP |
8211 | /* return string not v-string */ |
8212 | sv_setpvn(sv,(char *)s,pos-s); | |
8213 | return pos; | |
8214 | } | |
8215 | } | |
8216 | ||
8217 | if (!isALPHA(*pos)) { | |
8218 | UV rev; | |
8219 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
8220 | U8 *tmpend; | |
8221 | ||
8222 | if (*s == 'v') s++; /* get past 'v' */ | |
8223 | ||
8224 | sv_setpvn(sv, "", 0); | |
8225 | ||
8226 | for (;;) { | |
8227 | rev = 0; | |
8228 | { | |
8229 | /* this is atoi() that tolerates underscores */ | |
8230 | char *end = pos; | |
8231 | UV mult = 1; | |
8232 | while (--end >= s) { | |
8233 | UV orev; | |
8234 | if (*end == '_') | |
8235 | continue; | |
8236 | orev = rev; | |
8237 | rev += (*end - '0') * mult; | |
8238 | mult *= 10; | |
8239 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
8240 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
8241 | "Integer overflow in decimal number"); | |
8242 | } | |
8243 | } | |
8244 | #ifdef EBCDIC | |
8245 | if (rev > 0x7FFFFFFF) | |
8246 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
8247 | #endif | |
8248 | /* Append native character for the rev point */ | |
8249 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
8250 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
8251 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
8252 | SvUTF8_on(sv); | |
3e884cbf | 8253 | if (pos + 1 < PL_bufend && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
8254 | s = ++pos; |
8255 | else { | |
8256 | s = pos; | |
8257 | break; | |
8258 | } | |
3e884cbf | 8259 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
8260 | pos++; |
8261 | } | |
8262 | SvPOK_on(sv); | |
8263 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
8264 | SvRMAGICAL_on(sv); | |
8265 | } | |
8266 | return s; | |
8267 | } | |
8268 |