Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
4bb101f2 | 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
371fce9b | 4 | * 2000, 2001, 2002, 2003, 2004, 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 */ | |
3280af22 NIS |
718 | if (PL_minus_n || PL_minus_p) { |
719 | sv_setpv(PL_linestr,PL_minus_p ? | |
08e9d68e DD |
720 | ";}continue{print or die qq(-p destination: $!\\n)" : |
721 | ""); | |
3280af22 NIS |
722 | sv_catpv(PL_linestr,";}"); |
723 | PL_minus_n = PL_minus_p = 0; | |
a0d0e21e LW |
724 | } |
725 | else | |
3280af22 | 726 | sv_setpv(PL_linestr,";"); |
ffb4593c NT |
727 | |
728 | /* reset variables for next time we lex */ | |
9cbb5ea2 GS |
729 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart |
730 | = SvPVX(PL_linestr); | |
3280af22 | 731 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 732 | PL_last_lop = PL_last_uni = Nullch; |
ffb4593c NT |
733 | |
734 | /* Close the filehandle. Could be from -P preprocessor, | |
735 | * STDIN, or a regular file. If we were reading code from | |
736 | * STDIN (because the commandline held no -e or filename) | |
737 | * then we don't close it, we reset it so the code can | |
738 | * read from STDIN too. | |
739 | */ | |
740 | ||
3280af22 NIS |
741 | if (PL_preprocess && !PL_in_eval) |
742 | (void)PerlProc_pclose(PL_rsfp); | |
743 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) | |
744 | PerlIO_clearerr(PL_rsfp); | |
8990e307 | 745 | else |
3280af22 NIS |
746 | (void)PerlIO_close(PL_rsfp); |
747 | PL_rsfp = Nullfp; | |
463ee0b2 LW |
748 | return s; |
749 | } | |
ffb4593c NT |
750 | |
751 | /* not at end of file, so we only read another line */ | |
09bef843 SB |
752 | /* make corresponding updates to old pointers, for yyerror() */ |
753 | oldprevlen = PL_oldbufptr - PL_bufend; | |
754 | oldoldprevlen = PL_oldoldbufptr - PL_bufend; | |
755 | if (PL_last_uni) | |
756 | oldunilen = PL_last_uni - PL_bufend; | |
757 | if (PL_last_lop) | |
758 | oldloplen = PL_last_lop - PL_bufend; | |
3280af22 NIS |
759 | PL_linestart = PL_bufptr = s + prevlen; |
760 | PL_bufend = s + SvCUR(PL_linestr); | |
761 | s = PL_bufptr; | |
09bef843 SB |
762 | PL_oldbufptr = s + oldprevlen; |
763 | PL_oldoldbufptr = s + oldoldprevlen; | |
764 | if (PL_last_uni) | |
765 | PL_last_uni = s + oldunilen; | |
766 | if (PL_last_lop) | |
767 | PL_last_lop = s + oldloplen; | |
a0d0e21e | 768 | incline(s); |
ffb4593c NT |
769 | |
770 | /* debugger active and we're not compiling the debugger code, | |
771 | * so store the line into the debugger's array of lines | |
772 | */ | |
3280af22 | 773 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
8990e307 LW |
774 | SV *sv = NEWSV(85,0); |
775 | ||
776 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 777 | sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr); |
0ac0412a MJD |
778 | (void)SvIOK_on(sv); |
779 | SvIVX(sv) = 0; | |
57843af0 | 780 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
8990e307 | 781 | } |
463ee0b2 | 782 | } |
a687059c | 783 | } |
378cc40b | 784 | |
ffb4593c NT |
785 | /* |
786 | * S_check_uni | |
787 | * Check the unary operators to ensure there's no ambiguity in how they're | |
788 | * used. An ambiguous piece of code would be: | |
789 | * rand + 5 | |
790 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
791 | * the +5 is its argument. | |
792 | */ | |
793 | ||
76e3520e | 794 | STATIC void |
cea2e8a9 | 795 | S_check_uni(pTHX) |
ba106d47 | 796 | { |
2f3197b3 | 797 | char *s; |
a0d0e21e | 798 | char *t; |
2f3197b3 | 799 | |
3280af22 | 800 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 801 | return; |
3280af22 NIS |
802 | while (isSPACE(*PL_last_uni)) |
803 | PL_last_uni++; | |
7e2040f0 | 804 | for (s = PL_last_uni; isALNUM_lazy_if(s,UTF) || *s == '-'; s++) ; |
3280af22 | 805 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 806 | return; |
0453d815 | 807 | if (ckWARN_d(WARN_AMBIGUOUS)){ |
f248d071 | 808 | char ch = *s; |
0453d815 | 809 | *s = '\0'; |
9014280d | 810 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
2d5ccbba | 811 | "Warning: Use of \"%s\" without parentheses is ambiguous", |
0453d815 PM |
812 | PL_last_uni); |
813 | *s = ch; | |
814 | } | |
2f3197b3 LW |
815 | } |
816 | ||
ffb4593c NT |
817 | /* |
818 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
819 | * with a subroutine, S_lop() for which LOP is just another name. | |
820 | */ | |
821 | ||
a0d0e21e LW |
822 | #define LOP(f,x) return lop(f,x,s) |
823 | ||
ffb4593c NT |
824 | /* |
825 | * S_lop | |
826 | * Build a list operator (or something that might be one). The rules: | |
827 | * - if we have a next token, then it's a list operator [why?] | |
828 | * - if the next thing is an opening paren, then it's a function | |
829 | * - else it's a list operator | |
830 | */ | |
831 | ||
76e3520e | 832 | STATIC I32 |
a0be28da | 833 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 834 | { |
79072805 | 835 | yylval.ival = f; |
35c8bce7 | 836 | CLINE; |
3280af22 NIS |
837 | PL_expect = x; |
838 | PL_bufptr = s; | |
839 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 840 | PL_last_lop_op = (OPCODE)f; |
3280af22 | 841 | if (PL_nexttoke) |
bbf60fe6 | 842 | return REPORT(LSTOP); |
79072805 | 843 | if (*s == '(') |
bbf60fe6 | 844 | return REPORT(FUNC); |
79072805 LW |
845 | s = skipspace(s); |
846 | if (*s == '(') | |
bbf60fe6 | 847 | return REPORT(FUNC); |
79072805 | 848 | else |
bbf60fe6 | 849 | return REPORT(LSTOP); |
79072805 LW |
850 | } |
851 | ||
ffb4593c NT |
852 | /* |
853 | * S_force_next | |
9cbb5ea2 | 854 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 855 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 GS |
856 | * to know what token to return the next time the lexer is called. Caller |
857 | * will need to set PL_nextval[], and possibly PL_expect to ensure the lexer | |
858 | * handles the token correctly. | |
ffb4593c NT |
859 | */ |
860 | ||
4e553d73 | 861 | STATIC void |
cea2e8a9 | 862 | S_force_next(pTHX_ I32 type) |
79072805 | 863 | { |
3280af22 NIS |
864 | PL_nexttype[PL_nexttoke] = type; |
865 | PL_nexttoke++; | |
866 | if (PL_lex_state != LEX_KNOWNEXT) { | |
867 | PL_lex_defer = PL_lex_state; | |
868 | PL_lex_expect = PL_expect; | |
869 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 LW |
870 | } |
871 | } | |
872 | ||
ffb4593c NT |
873 | /* |
874 | * S_force_word | |
875 | * When the lexer knows the next thing is a word (for instance, it has | |
876 | * just seen -> and it knows that the next char is a word char, then | |
877 | * it calls S_force_word to stick the next word into the PL_next lookahead. | |
878 | * | |
879 | * Arguments: | |
b1b65b59 | 880 | * char *start : buffer position (must be within PL_linestr) |
ffb4593c NT |
881 | * int token : PL_next will be this type of bare word (e.g., METHOD,WORD) |
882 | * int check_keyword : if true, Perl checks to make sure the word isn't | |
883 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
884 | * int allow_pack : if true, : characters will also be allowed (require, | |
885 | * use, etc. do this) | |
9cbb5ea2 | 886 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
887 | */ |
888 | ||
76e3520e | 889 | STATIC char * |
cea2e8a9 | 890 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 891 | { |
463ee0b2 LW |
892 | register char *s; |
893 | STRLEN len; | |
4e553d73 | 894 | |
463ee0b2 LW |
895 | start = skipspace(start); |
896 | s = start; | |
7e2040f0 | 897 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 898 | (allow_pack && *s == ':') || |
15f0808c | 899 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 900 | { |
3280af22 NIS |
901 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
902 | if (check_keyword && keyword(PL_tokenbuf, len)) | |
463ee0b2 LW |
903 | return start; |
904 | if (token == METHOD) { | |
905 | s = skipspace(s); | |
906 | if (*s == '(') | |
3280af22 | 907 | PL_expect = XTERM; |
463ee0b2 | 908 | else { |
3280af22 | 909 | PL_expect = XOPERATOR; |
463ee0b2 | 910 | } |
79072805 | 911 | } |
3280af22 NIS |
912 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST,0, newSVpv(PL_tokenbuf,0)); |
913 | PL_nextval[PL_nexttoke].opval->op_private |= OPpCONST_BARE; | |
5464dbd2 RGS |
914 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
915 | SvUTF8_on(((SVOP*)PL_nextval[PL_nexttoke].opval)->op_sv); | |
79072805 LW |
916 | force_next(token); |
917 | } | |
918 | return s; | |
919 | } | |
920 | ||
ffb4593c NT |
921 | /* |
922 | * S_force_ident | |
9cbb5ea2 | 923 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
924 | * text only contains the "foo" portion. The first argument is a pointer |
925 | * to the "foo", and the second argument is the type symbol to prefix. | |
926 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 927 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
928 | */ |
929 | ||
76e3520e | 930 | STATIC void |
cea2e8a9 | 931 | S_force_ident(pTHX_ register char *s, int kind) |
79072805 LW |
932 | { |
933 | if (s && *s) { | |
11343788 | 934 | OP* o = (OP*)newSVOP(OP_CONST, 0, newSVpv(s,0)); |
3280af22 | 935 | PL_nextval[PL_nexttoke].opval = o; |
79072805 | 936 | force_next(WORD); |
748a9306 | 937 | if (kind) { |
11343788 | 938 | o->op_private = OPpCONST_ENTERED; |
55497cff | 939 | /* XXX see note in pp_entereval() for why we forgo typo |
940 | warnings if the symbol must be introduced in an eval. | |
941 | GSAR 96-10-12 */ | |
3280af22 | 942 | gv_fetchpv(s, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, |
a0d0e21e LW |
943 | kind == '$' ? SVt_PV : |
944 | kind == '@' ? SVt_PVAV : | |
945 | kind == '%' ? SVt_PVHV : | |
946 | SVt_PVGV | |
947 | ); | |
748a9306 | 948 | } |
79072805 LW |
949 | } |
950 | } | |
951 | ||
1571675a GS |
952 | NV |
953 | Perl_str_to_version(pTHX_ SV *sv) | |
954 | { | |
955 | NV retval = 0.0; | |
956 | NV nshift = 1.0; | |
957 | STRLEN len; | |
958 | char *start = SvPVx(sv,len); | |
3aa33fe5 | 959 | bool utf = SvUTF8(sv) ? TRUE : FALSE; |
1571675a GS |
960 | char *end = start + len; |
961 | while (start < end) { | |
ba210ebe | 962 | STRLEN skip; |
1571675a GS |
963 | UV n; |
964 | if (utf) | |
9041c2e3 | 965 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
966 | else { |
967 | n = *(U8*)start; | |
968 | skip = 1; | |
969 | } | |
970 | retval += ((NV)n)/nshift; | |
971 | start += skip; | |
972 | nshift *= 1000; | |
973 | } | |
974 | return retval; | |
975 | } | |
976 | ||
4e553d73 | 977 | /* |
ffb4593c NT |
978 | * S_force_version |
979 | * Forces the next token to be a version number. | |
e759cc13 RGS |
980 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
981 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
982 | * must use an alternative parsing method). | |
ffb4593c NT |
983 | */ |
984 | ||
76e3520e | 985 | STATIC char * |
e759cc13 | 986 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 987 | { |
988 | OP *version = Nullop; | |
44dcb63b | 989 | char *d; |
89bfa8cd | 990 | |
991 | s = skipspace(s); | |
992 | ||
44dcb63b | 993 | d = s; |
dd629d5b | 994 | if (*d == 'v') |
44dcb63b | 995 | d++; |
44dcb63b | 996 | if (isDIGIT(*d)) { |
e759cc13 RGS |
997 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
998 | d++; | |
9f3d182e | 999 | if (*d == ';' || isSPACE(*d) || *d == '}' || !*d) { |
dd629d5b | 1000 | SV *ver; |
b73d6f50 | 1001 | s = scan_num(s, &yylval); |
89bfa8cd | 1002 | version = yylval.opval; |
dd629d5b GS |
1003 | ver = cSVOPx(version)->op_sv; |
1004 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
155aba94 | 1005 | (void)SvUPGRADE(ver, SVt_PVNV); |
1571675a GS |
1006 | SvNVX(ver) = str_to_version(ver); |
1007 | SvNOK_on(ver); /* hint that it is a version */ | |
44dcb63b | 1008 | } |
89bfa8cd | 1009 | } |
e759cc13 RGS |
1010 | else if (guessing) |
1011 | return s; | |
89bfa8cd | 1012 | } |
1013 | ||
1014 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
3280af22 | 1015 | PL_nextval[PL_nexttoke].opval = version; |
4e553d73 | 1016 | force_next(WORD); |
89bfa8cd | 1017 | |
e759cc13 | 1018 | return s; |
89bfa8cd | 1019 | } |
1020 | ||
ffb4593c NT |
1021 | /* |
1022 | * S_tokeq | |
1023 | * Tokenize a quoted string passed in as an SV. It finds the next | |
1024 | * chunk, up to end of string or a backslash. It may make a new | |
1025 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
1026 | * turns \\ into \. | |
1027 | */ | |
1028 | ||
76e3520e | 1029 | STATIC SV * |
cea2e8a9 | 1030 | S_tokeq(pTHX_ SV *sv) |
79072805 LW |
1031 | { |
1032 | register char *s; | |
1033 | register char *send; | |
1034 | register char *d; | |
b3ac6de7 IZ |
1035 | STRLEN len = 0; |
1036 | SV *pv = sv; | |
79072805 LW |
1037 | |
1038 | if (!SvLEN(sv)) | |
b3ac6de7 | 1039 | goto finish; |
79072805 | 1040 | |
a0d0e21e | 1041 | s = SvPV_force(sv, len); |
21a311ee | 1042 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 1043 | goto finish; |
463ee0b2 | 1044 | send = s + len; |
79072805 LW |
1045 | while (s < send && *s != '\\') |
1046 | s++; | |
1047 | if (s == send) | |
b3ac6de7 | 1048 | goto finish; |
79072805 | 1049 | d = s; |
be4731d2 | 1050 | if ( PL_hints & HINT_NEW_STRING ) { |
79cb57f6 | 1051 | pv = sv_2mortal(newSVpvn(SvPVX(pv), len)); |
be4731d2 NIS |
1052 | if (SvUTF8(sv)) |
1053 | SvUTF8_on(pv); | |
1054 | } | |
79072805 LW |
1055 | while (s < send) { |
1056 | if (*s == '\\') { | |
a0d0e21e | 1057 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
1058 | s++; /* all that, just for this */ |
1059 | } | |
1060 | *d++ = *s++; | |
1061 | } | |
1062 | *d = '\0'; | |
463ee0b2 | 1063 | SvCUR_set(sv, d - SvPVX(sv)); |
b3ac6de7 | 1064 | finish: |
3280af22 | 1065 | if ( PL_hints & HINT_NEW_STRING ) |
b3ac6de7 | 1066 | return new_constant(NULL, 0, "q", sv, pv, "q"); |
79072805 LW |
1067 | return sv; |
1068 | } | |
1069 | ||
ffb4593c NT |
1070 | /* |
1071 | * Now come three functions related to double-quote context, | |
1072 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
1073 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
1074 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
1075 | * to handle functions and concatenation. | |
1076 | * They assume that whoever calls them will be setting up a fake | |
1077 | * join call, because each subthing puts a ',' after it. This lets | |
1078 | * "lower \luPpEr" | |
1079 | * become | |
1080 | * join($, , 'lower ', lcfirst( 'uPpEr', ) ,) | |
1081 | * | |
1082 | * (I'm not sure whether the spurious commas at the end of lcfirst's | |
1083 | * arguments and join's arguments are created or not). | |
1084 | */ | |
1085 | ||
1086 | /* | |
1087 | * S_sublex_start | |
1088 | * Assumes that yylval.ival is the op we're creating (e.g. OP_LCFIRST). | |
1089 | * | |
1090 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
1091 | * make (we return THING if yylval.ival is OP_NULL, PMFUNC otherwise). | |
1092 | * | |
1093 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
1094 | * | |
1095 | * Everything else becomes a FUNC. | |
1096 | * | |
1097 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
1098 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
1099 | * call to S_sublex_push(). | |
1100 | */ | |
1101 | ||
76e3520e | 1102 | STATIC I32 |
cea2e8a9 | 1103 | S_sublex_start(pTHX) |
79072805 LW |
1104 | { |
1105 | register I32 op_type = yylval.ival; | |
79072805 LW |
1106 | |
1107 | if (op_type == OP_NULL) { | |
3280af22 NIS |
1108 | yylval.opval = PL_lex_op; |
1109 | PL_lex_op = Nullop; | |
79072805 LW |
1110 | return THING; |
1111 | } | |
1112 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 1113 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
1114 | |
1115 | if (SvTYPE(sv) == SVt_PVIV) { | |
1116 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
1117 | STRLEN len; | |
1118 | char *p; | |
1119 | SV *nsv; | |
1120 | ||
1121 | p = SvPV(sv, len); | |
79cb57f6 | 1122 | nsv = newSVpvn(p, len); |
01ec43d0 GS |
1123 | if (SvUTF8(sv)) |
1124 | SvUTF8_on(nsv); | |
b3ac6de7 IZ |
1125 | SvREFCNT_dec(sv); |
1126 | sv = nsv; | |
4e553d73 | 1127 | } |
b3ac6de7 | 1128 | yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
3280af22 | 1129 | PL_lex_stuff = Nullsv; |
6f33ba73 RGS |
1130 | /* Allow <FH> // "foo" */ |
1131 | if (op_type == OP_READLINE) | |
1132 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
1133 | return THING; |
1134 | } | |
1135 | ||
3280af22 NIS |
1136 | PL_sublex_info.super_state = PL_lex_state; |
1137 | PL_sublex_info.sub_inwhat = op_type; | |
1138 | PL_sublex_info.sub_op = PL_lex_op; | |
1139 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 1140 | |
3280af22 NIS |
1141 | PL_expect = XTERM; |
1142 | if (PL_lex_op) { | |
1143 | yylval.opval = PL_lex_op; | |
1144 | PL_lex_op = Nullop; | |
55497cff | 1145 | return PMFUNC; |
1146 | } | |
1147 | else | |
1148 | return FUNC; | |
1149 | } | |
1150 | ||
ffb4593c NT |
1151 | /* |
1152 | * S_sublex_push | |
1153 | * Create a new scope to save the lexing state. The scope will be | |
1154 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
1155 | * to the uc, lc, etc. found before. | |
1156 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
1157 | */ | |
1158 | ||
76e3520e | 1159 | STATIC I32 |
cea2e8a9 | 1160 | S_sublex_push(pTHX) |
55497cff | 1161 | { |
f46d017c | 1162 | ENTER; |
55497cff | 1163 | |
3280af22 NIS |
1164 | PL_lex_state = PL_sublex_info.super_state; |
1165 | SAVEI32(PL_lex_dojoin); | |
1166 | SAVEI32(PL_lex_brackets); | |
3280af22 NIS |
1167 | SAVEI32(PL_lex_casemods); |
1168 | SAVEI32(PL_lex_starts); | |
1169 | SAVEI32(PL_lex_state); | |
7766f137 | 1170 | SAVEVPTR(PL_lex_inpat); |
3280af22 | 1171 | SAVEI32(PL_lex_inwhat); |
57843af0 | 1172 | SAVECOPLINE(PL_curcop); |
3280af22 | 1173 | SAVEPPTR(PL_bufptr); |
8452ff4b | 1174 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
1175 | SAVEPPTR(PL_oldbufptr); |
1176 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
1177 | SAVEPPTR(PL_last_lop); |
1178 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
1179 | SAVEPPTR(PL_linestart); |
1180 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
1181 | SAVEGENERICPV(PL_lex_brackstack); |
1182 | SAVEGENERICPV(PL_lex_casestack); | |
3280af22 NIS |
1183 | |
1184 | PL_linestr = PL_lex_stuff; | |
1185 | PL_lex_stuff = Nullsv; | |
1186 | ||
9cbb5ea2 GS |
1187 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
1188 | = SvPVX(PL_linestr); | |
3280af22 | 1189 | PL_bufend += SvCUR(PL_linestr); |
207e3d1a | 1190 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1191 | SAVEFREESV(PL_linestr); |
1192 | ||
1193 | PL_lex_dojoin = FALSE; | |
1194 | PL_lex_brackets = 0; | |
3280af22 NIS |
1195 | New(899, PL_lex_brackstack, 120, char); |
1196 | New(899, PL_lex_casestack, 12, char); | |
3280af22 NIS |
1197 | PL_lex_casemods = 0; |
1198 | *PL_lex_casestack = '\0'; | |
1199 | PL_lex_starts = 0; | |
1200 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 1201 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 NIS |
1202 | |
1203 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
1204 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) | |
1205 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 1206 | else |
3280af22 | 1207 | PL_lex_inpat = Nullop; |
79072805 | 1208 | |
55497cff | 1209 | return '('; |
79072805 LW |
1210 | } |
1211 | ||
ffb4593c NT |
1212 | /* |
1213 | * S_sublex_done | |
1214 | * Restores lexer state after a S_sublex_push. | |
1215 | */ | |
1216 | ||
76e3520e | 1217 | STATIC I32 |
cea2e8a9 | 1218 | S_sublex_done(pTHX) |
79072805 | 1219 | { |
3280af22 | 1220 | if (!PL_lex_starts++) { |
9aa983d2 JH |
1221 | SV *sv = newSVpvn("",0); |
1222 | if (SvUTF8(PL_linestr)) | |
1223 | SvUTF8_on(sv); | |
3280af22 | 1224 | PL_expect = XOPERATOR; |
9aa983d2 | 1225 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
1226 | return THING; |
1227 | } | |
1228 | ||
3280af22 NIS |
1229 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
1230 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 1231 | return yylex(); |
79072805 LW |
1232 | } |
1233 | ||
ffb4593c | 1234 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
3280af22 NIS |
1235 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
1236 | PL_linestr = PL_lex_repl; | |
1237 | PL_lex_inpat = 0; | |
1238 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
1239 | PL_bufend += SvCUR(PL_linestr); | |
207e3d1a | 1240 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 NIS |
1241 | SAVEFREESV(PL_linestr); |
1242 | PL_lex_dojoin = FALSE; | |
1243 | PL_lex_brackets = 0; | |
3280af22 NIS |
1244 | PL_lex_casemods = 0; |
1245 | *PL_lex_casestack = '\0'; | |
1246 | PL_lex_starts = 0; | |
25da4f38 | 1247 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
1248 | PL_lex_state = LEX_INTERPNORMAL; |
1249 | PL_lex_starts++; | |
e9fa98b2 HS |
1250 | /* we don't clear PL_lex_repl here, so that we can check later |
1251 | whether this is an evalled subst; that means we rely on the | |
1252 | logic to ensure sublex_done() is called again only via the | |
1253 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 1254 | } |
e9fa98b2 | 1255 | else { |
3280af22 | 1256 | PL_lex_state = LEX_INTERPCONCAT; |
e9fa98b2 HS |
1257 | PL_lex_repl = Nullsv; |
1258 | } | |
79072805 | 1259 | return ','; |
ffed7fef LW |
1260 | } |
1261 | else { | |
f46d017c | 1262 | LEAVE; |
3280af22 NIS |
1263 | PL_bufend = SvPVX(PL_linestr); |
1264 | PL_bufend += SvCUR(PL_linestr); | |
1265 | PL_expect = XOPERATOR; | |
09bef843 | 1266 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 1267 | return ')'; |
ffed7fef LW |
1268 | } |
1269 | } | |
1270 | ||
02aa26ce NT |
1271 | /* |
1272 | scan_const | |
1273 | ||
1274 | Extracts a pattern, double-quoted string, or transliteration. This | |
1275 | is terrifying code. | |
1276 | ||
3280af22 NIS |
1277 | It looks at lex_inwhat and PL_lex_inpat to find out whether it's |
1278 | processing a pattern (PL_lex_inpat is true), a transliteration | |
02aa26ce NT |
1279 | (lex_inwhat & OP_TRANS is true), or a double-quoted string. |
1280 | ||
9b599b2a GS |
1281 | Returns a pointer to the character scanned up to. Iff this is |
1282 | advanced from the start pointer supplied (ie if anything was | |
1283 | successfully parsed), will leave an OP for the substring scanned | |
1284 | in yylval. Caller must intuit reason for not parsing further | |
1285 | by looking at the next characters herself. | |
1286 | ||
02aa26ce NT |
1287 | In patterns: |
1288 | backslashes: | |
1289 | double-quoted style: \r and \n | |
1290 | regexp special ones: \D \s | |
1291 | constants: \x3 | |
1292 | backrefs: \1 (deprecated in substitution replacements) | |
1293 | case and quoting: \U \Q \E | |
1294 | stops on @ and $, but not for $ as tail anchor | |
1295 | ||
1296 | In transliterations: | |
1297 | characters are VERY literal, except for - not at the start or end | |
1298 | of the string, which indicates a range. scan_const expands the | |
1299 | range to the full set of intermediate characters. | |
1300 | ||
1301 | In double-quoted strings: | |
1302 | backslashes: | |
1303 | double-quoted style: \r and \n | |
1304 | constants: \x3 | |
1305 | backrefs: \1 (deprecated) | |
1306 | case and quoting: \U \Q \E | |
1307 | stops on @ and $ | |
1308 | ||
1309 | scan_const does *not* construct ops to handle interpolated strings. | |
1310 | It stops processing as soon as it finds an embedded $ or @ variable | |
1311 | and leaves it to the caller to work out what's going on. | |
1312 | ||
da6eedaa | 1313 | @ in pattern could be: @foo, @{foo}, @$foo, @'foo, @::foo. |
02aa26ce NT |
1314 | |
1315 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
1316 | it's a tail anchor if $ is the last thing in the string, or if it's | |
1317 | followed by one of ")| \n\t" | |
1318 | ||
1319 | \1 (backreferences) are turned into $1 | |
1320 | ||
1321 | The structure of the code is | |
1322 | while (there's a character to process) { | |
1323 | handle transliteration ranges | |
1324 | skip regexp comments | |
1325 | skip # initiated comments in //x patterns | |
1326 | check for embedded @foo | |
1327 | check for embedded scalars | |
1328 | if (backslash) { | |
1329 | leave intact backslashes from leave (below) | |
1330 | deprecate \1 in strings and sub replacements | |
1331 | handle string-changing backslashes \l \U \Q \E, etc. | |
1332 | switch (what was escaped) { | |
1333 | handle - in a transliteration (becomes a literal -) | |
1334 | handle \132 octal characters | |
1335 | handle 0x15 hex characters | |
1336 | handle \cV (control V) | |
1337 | handle printf backslashes (\f, \r, \n, etc) | |
1338 | } (end switch) | |
1339 | } (end if backslash) | |
1340 | } (end while character to read) | |
4e553d73 | 1341 | |
02aa26ce NT |
1342 | */ |
1343 | ||
76e3520e | 1344 | STATIC char * |
cea2e8a9 | 1345 | S_scan_const(pTHX_ char *start) |
79072805 | 1346 | { |
3280af22 | 1347 | register char *send = PL_bufend; /* end of the constant */ |
02aa26ce NT |
1348 | SV *sv = NEWSV(93, send - start); /* sv for the constant */ |
1349 | register char *s = start; /* start of the constant */ | |
1350 | register char *d = SvPVX(sv); /* destination for copies */ | |
1351 | bool dorange = FALSE; /* are we in a translit range? */ | |
c2e66d9e | 1352 | bool didrange = FALSE; /* did we just finish a range? */ |
2b9d42f0 NIS |
1353 | I32 has_utf8 = FALSE; /* Output constant is UTF8 */ |
1354 | I32 this_utf8 = UTF; /* The source string is assumed to be UTF8 */ | |
012bcf8d GS |
1355 | UV uv; |
1356 | ||
dff6d3cd | 1357 | const char *leaveit = /* set of acceptably-backslashed characters */ |
3280af22 | 1358 | PL_lex_inpat |
b6d5fef8 | 1359 | ? "\\.^$@AGZdDwWsSbBpPXC+*?|()-nrtfeaxz0123456789[{]} \t\n\r\f\v#" |
9b599b2a | 1360 | : ""; |
79072805 | 1361 | |
2b9d42f0 NIS |
1362 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
1363 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
1364 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
1365 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
1366 | } | |
1367 | ||
1368 | ||
79072805 | 1369 | while (s < send || dorange) { |
02aa26ce | 1370 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 1371 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 1372 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 1373 | if (dorange) { |
1ba5c669 JH |
1374 | I32 i; /* current expanded character */ |
1375 | I32 min; /* first character in range */ | |
1376 | I32 max; /* last character in range */ | |
02aa26ce | 1377 | |
2b9d42f0 | 1378 | if (has_utf8) { |
8973db79 JH |
1379 | char *c = (char*)utf8_hop((U8*)d, -1); |
1380 | char *e = d++; | |
1381 | while (e-- > c) | |
1382 | *(e + 1) = *e; | |
25716404 | 1383 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
1384 | /* mark the range as done, and continue */ |
1385 | dorange = FALSE; | |
1386 | didrange = TRUE; | |
1387 | continue; | |
1388 | } | |
2b9d42f0 | 1389 | |
02aa26ce | 1390 | i = d - SvPVX(sv); /* remember current offset */ |
9cbb5ea2 GS |
1391 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
1392 | d = SvPVX(sv) + i; /* refresh d after realloc */ | |
02aa26ce NT |
1393 | d -= 2; /* eat the first char and the - */ |
1394 | ||
8ada0baa JH |
1395 | min = (U8)*d; /* first char in range */ |
1396 | max = (U8)d[1]; /* last char in range */ | |
1397 | ||
c2e66d9e | 1398 | if (min > max) { |
01ec43d0 | 1399 | Perl_croak(aTHX_ |
d1573ac7 | 1400 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 1401 | (char)min, (char)max); |
c2e66d9e GS |
1402 | } |
1403 | ||
c7f1f016 | 1404 | #ifdef EBCDIC |
8ada0baa JH |
1405 | if ((isLOWER(min) && isLOWER(max)) || |
1406 | (isUPPER(min) && isUPPER(max))) { | |
1407 | if (isLOWER(min)) { | |
1408 | for (i = min; i <= max; i++) | |
1409 | if (isLOWER(i)) | |
db42d148 | 1410 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1411 | } else { |
1412 | for (i = min; i <= max; i++) | |
1413 | if (isUPPER(i)) | |
db42d148 | 1414 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
1415 | } |
1416 | } | |
1417 | else | |
1418 | #endif | |
1419 | for (i = min; i <= max; i++) | |
eb160463 | 1420 | *d++ = (char)i; |
02aa26ce NT |
1421 | |
1422 | /* mark the range as done, and continue */ | |
79072805 | 1423 | dorange = FALSE; |
01ec43d0 | 1424 | didrange = TRUE; |
79072805 | 1425 | continue; |
4e553d73 | 1426 | } |
02aa26ce NT |
1427 | |
1428 | /* range begins (ignore - as first or last char) */ | |
79072805 | 1429 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 1430 | if (didrange) { |
1fafa243 | 1431 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 1432 | } |
2b9d42f0 | 1433 | if (has_utf8) { |
25716404 | 1434 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
1435 | s++; |
1436 | continue; | |
1437 | } | |
79072805 LW |
1438 | dorange = TRUE; |
1439 | s++; | |
01ec43d0 GS |
1440 | } |
1441 | else { | |
1442 | didrange = FALSE; | |
1443 | } | |
79072805 | 1444 | } |
02aa26ce NT |
1445 | |
1446 | /* if we get here, we're not doing a transliteration */ | |
1447 | ||
0f5d15d6 IZ |
1448 | /* skip for regexp comments /(?#comment)/ and code /(?{code})/, |
1449 | except for the last char, which will be done separately. */ | |
3280af22 | 1450 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 1451 | if (s[2] == '#') { |
e994fd66 | 1452 | while (s+1 < send && *s != ')') |
db42d148 | 1453 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 GS |
1454 | } |
1455 | else if (s[2] == '{' /* This should match regcomp.c */ | |
1456 | || ((s[2] == 'p' || s[2] == '?') && s[3] == '{')) | |
1457 | { | |
cc6b7395 | 1458 | I32 count = 1; |
0f5d15d6 | 1459 | char *regparse = s + (s[2] == '{' ? 3 : 4); |
cc6b7395 IZ |
1460 | char c; |
1461 | ||
d9f97599 GS |
1462 | while (count && (c = *regparse)) { |
1463 | if (c == '\\' && regparse[1]) | |
1464 | regparse++; | |
4e553d73 | 1465 | else if (c == '{') |
cc6b7395 | 1466 | count++; |
4e553d73 | 1467 | else if (c == '}') |
cc6b7395 | 1468 | count--; |
d9f97599 | 1469 | regparse++; |
cc6b7395 | 1470 | } |
e994fd66 | 1471 | if (*regparse != ')') |
5bdf89e7 | 1472 | regparse--; /* Leave one char for continuation. */ |
0f5d15d6 | 1473 | while (s < regparse) |
db42d148 | 1474 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
cc6b7395 | 1475 | } |
748a9306 | 1476 | } |
02aa26ce NT |
1477 | |
1478 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 NIS |
1479 | else if (*s == '#' && PL_lex_inpat && |
1480 | ((PMOP*)PL_lex_inpat)->op_pmflags & PMf_EXTENDED) { | |
748a9306 | 1481 | while (s+1 < send && *s != '\n') |
db42d148 | 1482 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 1483 | } |
02aa26ce | 1484 | |
5d1d4326 | 1485 | /* check for embedded arrays |
da6eedaa | 1486 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 1487 | */ |
7e2040f0 | 1488 | else if (*s == '@' && s[1] |
5d1d4326 | 1489 | && (isALNUM_lazy_if(s+1,UTF) || strchr(":'{$+-", s[1]))) |
79072805 | 1490 | break; |
02aa26ce NT |
1491 | |
1492 | /* check for embedded scalars. only stop if we're sure it's a | |
1493 | variable. | |
1494 | */ | |
79072805 | 1495 | else if (*s == '$') { |
3280af22 | 1496 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 1497 | break; |
6002328a | 1498 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) |
79072805 LW |
1499 | break; /* in regexp, $ might be tail anchor */ |
1500 | } | |
02aa26ce | 1501 | |
2b9d42f0 NIS |
1502 | /* End of else if chain - OP_TRANS rejoin rest */ |
1503 | ||
02aa26ce | 1504 | /* backslashes */ |
79072805 LW |
1505 | if (*s == '\\' && s+1 < send) { |
1506 | s++; | |
02aa26ce NT |
1507 | |
1508 | /* some backslashes we leave behind */ | |
c9f97d15 | 1509 | if (*leaveit && *s && strchr(leaveit, *s)) { |
db42d148 NIS |
1510 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
1511 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
79072805 LW |
1512 | continue; |
1513 | } | |
02aa26ce NT |
1514 | |
1515 | /* deprecate \1 in strings and substitution replacements */ | |
3280af22 | 1516 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 1517 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 1518 | { |
599cee73 | 1519 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 1520 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
1521 | *--s = '$'; |
1522 | break; | |
1523 | } | |
02aa26ce NT |
1524 | |
1525 | /* string-change backslash escapes */ | |
3280af22 | 1526 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQ", *s)) { |
79072805 LW |
1527 | --s; |
1528 | break; | |
1529 | } | |
02aa26ce NT |
1530 | |
1531 | /* if we get here, it's either a quoted -, or a digit */ | |
79072805 | 1532 | switch (*s) { |
02aa26ce NT |
1533 | |
1534 | /* quoted - in transliterations */ | |
79072805 | 1535 | case '-': |
3280af22 | 1536 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
1537 | *d++ = *s++; |
1538 | continue; | |
1539 | } | |
1540 | /* FALL THROUGH */ | |
1541 | default: | |
11b8faa4 | 1542 | { |
707afd92 MS |
1543 | if (ckWARN(WARN_MISC) && |
1544 | isALNUM(*s) && | |
1545 | *s != '_') | |
9014280d | 1546 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
11b8faa4 JH |
1547 | "Unrecognized escape \\%c passed through", |
1548 | *s); | |
1549 | /* default action is to copy the quoted character */ | |
f9a63242 | 1550 | goto default_action; |
11b8faa4 | 1551 | } |
02aa26ce NT |
1552 | |
1553 | /* \132 indicates an octal constant */ | |
79072805 LW |
1554 | case '0': case '1': case '2': case '3': |
1555 | case '4': case '5': case '6': case '7': | |
ba210ebe | 1556 | { |
53305cf1 NC |
1557 | I32 flags = 0; |
1558 | STRLEN len = 3; | |
1559 | uv = grok_oct(s, &len, &flags, NULL); | |
ba210ebe JH |
1560 | s += len; |
1561 | } | |
012bcf8d | 1562 | goto NUM_ESCAPE_INSERT; |
02aa26ce NT |
1563 | |
1564 | /* \x24 indicates a hex constant */ | |
79072805 | 1565 | case 'x': |
a0ed51b3 LW |
1566 | ++s; |
1567 | if (*s == '{') { | |
1568 | char* e = strchr(s, '}'); | |
a4c04bdc NC |
1569 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
1570 | PERL_SCAN_DISALLOW_PREFIX; | |
53305cf1 | 1571 | STRLEN len; |
355860ce | 1572 | |
53305cf1 | 1573 | ++s; |
adaeee49 | 1574 | if (!e) { |
a0ed51b3 | 1575 | yyerror("Missing right brace on \\x{}"); |
355860ce | 1576 | continue; |
ba210ebe | 1577 | } |
53305cf1 NC |
1578 | len = e - s; |
1579 | uv = grok_hex(s, &len, &flags, NULL); | |
ba210ebe | 1580 | s = e + 1; |
a0ed51b3 LW |
1581 | } |
1582 | else { | |
ba210ebe | 1583 | { |
53305cf1 | 1584 | STRLEN len = 2; |
a4c04bdc | 1585 | I32 flags = PERL_SCAN_DISALLOW_PREFIX; |
53305cf1 | 1586 | uv = grok_hex(s, &len, &flags, NULL); |
ba210ebe JH |
1587 | s += len; |
1588 | } | |
012bcf8d GS |
1589 | } |
1590 | ||
1591 | NUM_ESCAPE_INSERT: | |
1592 | /* Insert oct or hex escaped character. | |
301d3d20 | 1593 | * There will always enough room in sv since such |
db42d148 | 1594 | * escapes will be longer than any UTF-8 sequence |
301d3d20 | 1595 | * they can end up as. */ |
ba7cea30 | 1596 | |
c7f1f016 NIS |
1597 | /* We need to map to chars to ASCII before doing the tests |
1598 | to cover EBCDIC | |
1599 | */ | |
c4d5f83a | 1600 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(uv))) { |
9aa983d2 | 1601 | if (!has_utf8 && uv > 255) { |
301d3d20 JH |
1602 | /* Might need to recode whatever we have |
1603 | * accumulated so far if it contains any | |
1604 | * hibit chars. | |
1605 | * | |
1606 | * (Can't we keep track of that and avoid | |
1607 | * this rescan? --jhi) | |
012bcf8d | 1608 | */ |
c7f1f016 | 1609 | int hicount = 0; |
63cd0674 NIS |
1610 | U8 *c; |
1611 | for (c = (U8 *) SvPVX(sv); c < (U8 *)d; c++) { | |
c4d5f83a | 1612 | if (!NATIVE_IS_INVARIANT(*c)) { |
012bcf8d | 1613 | hicount++; |
db42d148 | 1614 | } |
012bcf8d | 1615 | } |
63cd0674 | 1616 | if (hicount) { |
db42d148 NIS |
1617 | STRLEN offset = d - SvPVX(sv); |
1618 | U8 *src, *dst; | |
1619 | d = SvGROW(sv, SvLEN(sv) + hicount + 1) + offset; | |
1620 | src = (U8 *)d - 1; | |
1621 | dst = src+hicount; | |
1622 | d += hicount; | |
1623 | while (src >= (U8 *)SvPVX(sv)) { | |
c4d5f83a | 1624 | if (!NATIVE_IS_INVARIANT(*src)) { |
63cd0674 | 1625 | U8 ch = NATIVE_TO_ASCII(*src); |
eb160463 GS |
1626 | *dst-- = (U8)UTF8_EIGHT_BIT_LO(ch); |
1627 | *dst-- = (U8)UTF8_EIGHT_BIT_HI(ch); | |
012bcf8d GS |
1628 | } |
1629 | else { | |
63cd0674 | 1630 | *dst-- = *src; |
012bcf8d | 1631 | } |
c7f1f016 | 1632 | src--; |
012bcf8d GS |
1633 | } |
1634 | } | |
1635 | } | |
1636 | ||
9aa983d2 | 1637 | if (has_utf8 || uv > 255) { |
9041c2e3 | 1638 | d = (char*)uvchr_to_utf8((U8*)d, uv); |
4e553d73 | 1639 | has_utf8 = TRUE; |
f9a63242 JH |
1640 | if (PL_lex_inwhat == OP_TRANS && |
1641 | PL_sublex_info.sub_op) { | |
1642 | PL_sublex_info.sub_op->op_private |= | |
1643 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
1644 | : OPpTRANS_TO_UTF); | |
f9a63242 | 1645 | } |
012bcf8d | 1646 | } |
a0ed51b3 | 1647 | else { |
012bcf8d | 1648 | *d++ = (char)uv; |
a0ed51b3 | 1649 | } |
012bcf8d GS |
1650 | } |
1651 | else { | |
c4d5f83a | 1652 | *d++ = (char) uv; |
a0ed51b3 | 1653 | } |
79072805 | 1654 | continue; |
02aa26ce | 1655 | |
b239daa5 | 1656 | /* \N{LATIN SMALL LETTER A} is a named character */ |
4a2d328f | 1657 | case 'N': |
55eda711 | 1658 | ++s; |
423cee85 JH |
1659 | if (*s == '{') { |
1660 | char* e = strchr(s, '}'); | |
155aba94 | 1661 | SV *res; |
423cee85 JH |
1662 | STRLEN len; |
1663 | char *str; | |
4e553d73 | 1664 | |
423cee85 | 1665 | if (!e) { |
5777a3f7 | 1666 | yyerror("Missing right brace on \\N{}"); |
423cee85 JH |
1667 | e = s - 1; |
1668 | goto cont_scan; | |
1669 | } | |
dbc0d4f2 JH |
1670 | if (e > s + 2 && s[1] == 'U' && s[2] == '+') { |
1671 | /* \N{U+...} */ | |
1672 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | | |
1673 | PERL_SCAN_DISALLOW_PREFIX; | |
1674 | s += 3; | |
1675 | len = e - s; | |
1676 | uv = grok_hex(s, &len, &flags, NULL); | |
1677 | s = e + 1; | |
1678 | goto NUM_ESCAPE_INSERT; | |
1679 | } | |
55eda711 JH |
1680 | res = newSVpvn(s + 1, e - s - 1); |
1681 | res = new_constant( Nullch, 0, "charnames", | |
1682 | res, Nullsv, "\\N{...}" ); | |
f9a63242 JH |
1683 | if (has_utf8) |
1684 | sv_utf8_upgrade(res); | |
423cee85 | 1685 | str = SvPV(res,len); |
1c47067b JH |
1686 | #ifdef EBCDIC_NEVER_MIND |
1687 | /* charnames uses pack U and that has been | |
1688 | * recently changed to do the below uni->native | |
1689 | * mapping, so this would be redundant (and wrong, | |
1690 | * the code point would be doubly converted). | |
1691 | * But leave this in just in case the pack U change | |
1692 | * gets revoked, but the semantics is still | |
1693 | * desireable for charnames. --jhi */ | |
cddc7ef4 JH |
1694 | { |
1695 | UV uv = utf8_to_uvchr((U8*)str, 0); | |
1696 | ||
1697 | if (uv < 0x100) { | |
1698 | U8 tmpbuf[UTF8_MAXLEN+1], *d; | |
1699 | ||
1700 | d = uvchr_to_utf8(tmpbuf, UNI_TO_NATIVE(uv)); | |
1701 | sv_setpvn(res, (char *)tmpbuf, d - tmpbuf); | |
1702 | str = SvPV(res, len); | |
1703 | } | |
1704 | } | |
1705 | #endif | |
89491803 | 1706 | if (!has_utf8 && SvUTF8(res)) { |
f08d6ad9 GS |
1707 | char *ostart = SvPVX(sv); |
1708 | SvCUR_set(sv, d - ostart); | |
1709 | SvPOK_on(sv); | |
e4f3eed8 | 1710 | *d = '\0'; |
f08d6ad9 | 1711 | sv_utf8_upgrade(sv); |
d2f449dd | 1712 | /* this just broke our allocation above... */ |
eb160463 | 1713 | SvGROW(sv, (STRLEN)(send - start)); |
f08d6ad9 | 1714 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 1715 | has_utf8 = TRUE; |
f08d6ad9 | 1716 | } |
eb160463 | 1717 | if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ |
423cee85 JH |
1718 | char *odest = SvPVX(sv); |
1719 | ||
8973db79 | 1720 | SvGROW(sv, (SvLEN(sv) + len - (e - s + 4))); |
423cee85 JH |
1721 | d = SvPVX(sv) + (d - odest); |
1722 | } | |
1723 | Copy(str, d, len, char); | |
1724 | d += len; | |
1725 | SvREFCNT_dec(res); | |
1726 | cont_scan: | |
1727 | s = e + 1; | |
1728 | } | |
1729 | else | |
5777a3f7 | 1730 | yyerror("Missing braces on \\N{}"); |
423cee85 JH |
1731 | continue; |
1732 | ||
02aa26ce | 1733 | /* \c is a control character */ |
79072805 LW |
1734 | case 'c': |
1735 | s++; | |
961ce445 | 1736 | if (s < send) { |
ba210ebe | 1737 | U8 c = *s++; |
c7f1f016 NIS |
1738 | #ifdef EBCDIC |
1739 | if (isLOWER(c)) | |
1740 | c = toUPPER(c); | |
1741 | #endif | |
db42d148 | 1742 | *d++ = NATIVE_TO_NEED(has_utf8,toCTRL(c)); |
ba210ebe | 1743 | } |
961ce445 RGS |
1744 | else { |
1745 | yyerror("Missing control char name in \\c"); | |
1746 | } | |
79072805 | 1747 | continue; |
02aa26ce NT |
1748 | |
1749 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 1750 | case 'b': |
db42d148 | 1751 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
1752 | break; |
1753 | case 'n': | |
db42d148 | 1754 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
1755 | break; |
1756 | case 'r': | |
db42d148 | 1757 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
1758 | break; |
1759 | case 'f': | |
db42d148 | 1760 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
1761 | break; |
1762 | case 't': | |
db42d148 | 1763 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 1764 | break; |
34a3fe2a | 1765 | case 'e': |
db42d148 | 1766 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
1767 | break; |
1768 | case 'a': | |
db42d148 | 1769 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 1770 | break; |
02aa26ce NT |
1771 | } /* end switch */ |
1772 | ||
79072805 LW |
1773 | s++; |
1774 | continue; | |
02aa26ce NT |
1775 | } /* end if (backslash) */ |
1776 | ||
f9a63242 | 1777 | default_action: |
2b9d42f0 NIS |
1778 | /* If we started with encoded form, or already know we want it |
1779 | and then encode the next character */ | |
1780 | if ((has_utf8 || this_utf8) && !NATIVE_IS_INVARIANT((U8)(*s))) { | |
1781 | STRLEN len = 1; | |
1782 | UV uv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); | |
1783 | STRLEN need = UNISKIP(NATIVE_TO_UNI(uv)); | |
1784 | s += len; | |
1785 | if (need > len) { | |
1786 | /* encoded value larger than old, need extra space (NOTE: SvCUR() not set here) */ | |
1787 | STRLEN off = d - SvPVX(sv); | |
1788 | d = SvGROW(sv, SvLEN(sv) + (need-len)) + off; | |
1789 | } | |
1790 | d = (char*)uvchr_to_utf8((U8*)d, uv); | |
1791 | has_utf8 = TRUE; | |
1792 | } | |
1793 | else { | |
1794 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
1795 | } | |
02aa26ce NT |
1796 | } /* while loop to process each character */ |
1797 | ||
1798 | /* terminate the string and set up the sv */ | |
79072805 | 1799 | *d = '\0'; |
463ee0b2 | 1800 | SvCUR_set(sv, d - SvPVX(sv)); |
2b9d42f0 | 1801 | if (SvCUR(sv) >= SvLEN(sv)) |
d0063567 | 1802 | Perl_croak(aTHX_ "panic: constant overflowed allocated space"); |
2b9d42f0 | 1803 | |
79072805 | 1804 | SvPOK_on(sv); |
9f4817db | 1805 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
1806 | sv_recode_to_utf8(sv, PL_encoding); |
1807 | if (SvUTF8(sv)) | |
1808 | has_utf8 = TRUE; | |
9f4817db | 1809 | } |
2b9d42f0 | 1810 | if (has_utf8) { |
7e2040f0 | 1811 | SvUTF8_on(sv); |
2b9d42f0 | 1812 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 1813 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
1814 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
1815 | } | |
1816 | } | |
79072805 | 1817 | |
02aa26ce | 1818 | /* shrink the sv if we allocated more than we used */ |
79072805 LW |
1819 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1820 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 1821 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 1822 | } |
02aa26ce | 1823 | |
9b599b2a | 1824 | /* return the substring (via yylval) only if we parsed anything */ |
3280af22 NIS |
1825 | if (s > PL_bufptr) { |
1826 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) | |
4e553d73 | 1827 | sv = new_constant(start, s - start, (PL_lex_inpat ? "qr" : "q"), |
b3ac6de7 | 1828 | sv, Nullsv, |
4e553d73 | 1829 | ( PL_lex_inwhat == OP_TRANS |
b3ac6de7 | 1830 | ? "tr" |
3280af22 | 1831 | : ( (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) |
b3ac6de7 IZ |
1832 | ? "s" |
1833 | : "qq"))); | |
79072805 | 1834 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 1835 | } else |
8990e307 | 1836 | SvREFCNT_dec(sv); |
79072805 LW |
1837 | return s; |
1838 | } | |
1839 | ||
ffb4593c NT |
1840 | /* S_intuit_more |
1841 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
1842 | * FALSE otherwise. | |
ffb4593c NT |
1843 | * |
1844 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
1845 | * | |
1846 | * ->[ and ->{ return TRUE | |
1847 | * { and [ outside a pattern are always subscripts, so return TRUE | |
1848 | * if we're outside a pattern and it's not { or [, then return FALSE | |
1849 | * if we're in a pattern and the first char is a { | |
1850 | * {4,5} (any digits around the comma) returns FALSE | |
1851 | * if we're in a pattern and the first char is a [ | |
1852 | * [] returns FALSE | |
1853 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
1854 | * character class or not. It has to deal with things like | |
1855 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
1856 | * anything else returns TRUE | |
1857 | */ | |
1858 | ||
9cbb5ea2 GS |
1859 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
1860 | ||
76e3520e | 1861 | STATIC int |
cea2e8a9 | 1862 | S_intuit_more(pTHX_ register char *s) |
79072805 | 1863 | { |
3280af22 | 1864 | if (PL_lex_brackets) |
79072805 LW |
1865 | return TRUE; |
1866 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
1867 | return TRUE; | |
1868 | if (*s != '{' && *s != '[') | |
1869 | return FALSE; | |
3280af22 | 1870 | if (!PL_lex_inpat) |
79072805 LW |
1871 | return TRUE; |
1872 | ||
1873 | /* In a pattern, so maybe we have {n,m}. */ | |
1874 | if (*s == '{') { | |
1875 | s++; | |
1876 | if (!isDIGIT(*s)) | |
1877 | return TRUE; | |
1878 | while (isDIGIT(*s)) | |
1879 | s++; | |
1880 | if (*s == ',') | |
1881 | s++; | |
1882 | while (isDIGIT(*s)) | |
1883 | s++; | |
1884 | if (*s == '}') | |
1885 | return FALSE; | |
1886 | return TRUE; | |
1887 | ||
1888 | } | |
1889 | ||
1890 | /* On the other hand, maybe we have a character class */ | |
1891 | ||
1892 | s++; | |
1893 | if (*s == ']' || *s == '^') | |
1894 | return FALSE; | |
1895 | else { | |
ffb4593c | 1896 | /* this is terrifying, and it works */ |
79072805 LW |
1897 | int weight = 2; /* let's weigh the evidence */ |
1898 | char seen[256]; | |
f27ffc4a | 1899 | unsigned char un_char = 255, last_un_char; |
93a17b20 | 1900 | char *send = strchr(s,']'); |
3280af22 | 1901 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
1902 | |
1903 | if (!send) /* has to be an expression */ | |
1904 | return TRUE; | |
1905 | ||
1906 | Zero(seen,256,char); | |
1907 | if (*s == '$') | |
1908 | weight -= 3; | |
1909 | else if (isDIGIT(*s)) { | |
1910 | if (s[1] != ']') { | |
1911 | if (isDIGIT(s[1]) && s[2] == ']') | |
1912 | weight -= 10; | |
1913 | } | |
1914 | else | |
1915 | weight -= 100; | |
1916 | } | |
1917 | for (; s < send; s++) { | |
1918 | last_un_char = un_char; | |
1919 | un_char = (unsigned char)*s; | |
1920 | switch (*s) { | |
1921 | case '@': | |
1922 | case '&': | |
1923 | case '$': | |
1924 | weight -= seen[un_char] * 10; | |
7e2040f0 | 1925 | if (isALNUM_lazy_if(s+1,UTF)) { |
8903cb82 | 1926 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
a0d0e21e | 1927 | if ((int)strlen(tmpbuf) > 1 && gv_fetchpv(tmpbuf,FALSE, SVt_PV)) |
79072805 LW |
1928 | weight -= 100; |
1929 | else | |
1930 | weight -= 10; | |
1931 | } | |
1932 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
1933 | strchr("[#!%*<>()-=",s[1])) { |
1934 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
1935 | weight -= 10; |
1936 | else | |
1937 | weight -= 1; | |
1938 | } | |
1939 | break; | |
1940 | case '\\': | |
1941 | un_char = 254; | |
1942 | if (s[1]) { | |
93a17b20 | 1943 | if (strchr("wds]",s[1])) |
79072805 LW |
1944 | weight += 100; |
1945 | else if (seen['\''] || seen['"']) | |
1946 | weight += 1; | |
93a17b20 | 1947 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
1948 | weight += 40; |
1949 | else if (isDIGIT(s[1])) { | |
1950 | weight += 40; | |
1951 | while (s[1] && isDIGIT(s[1])) | |
1952 | s++; | |
1953 | } | |
1954 | } | |
1955 | else | |
1956 | weight += 100; | |
1957 | break; | |
1958 | case '-': | |
1959 | if (s[1] == '\\') | |
1960 | weight += 50; | |
93a17b20 | 1961 | if (strchr("aA01! ",last_un_char)) |
79072805 | 1962 | weight += 30; |
93a17b20 | 1963 | if (strchr("zZ79~",s[1])) |
79072805 | 1964 | weight += 30; |
f27ffc4a GS |
1965 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
1966 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1967 | break; |
1968 | default: | |
3792a11b NC |
1969 | if (!isALNUM(last_un_char) |
1970 | && !(last_un_char == '$' || last_un_char == '@' | |
1971 | || last_un_char == '&') | |
1972 | && isALPHA(*s) && s[1] && isALPHA(s[1])) { | |
79072805 LW |
1973 | char *d = tmpbuf; |
1974 | while (isALPHA(*s)) | |
1975 | *d++ = *s++; | |
1976 | *d = '\0'; | |
1977 | if (keyword(tmpbuf, d - tmpbuf)) | |
1978 | weight -= 150; | |
1979 | } | |
1980 | if (un_char == last_un_char + 1) | |
1981 | weight += 5; | |
1982 | weight -= seen[un_char]; | |
1983 | break; | |
1984 | } | |
1985 | seen[un_char]++; | |
1986 | } | |
1987 | if (weight >= 0) /* probably a character class */ | |
1988 | return FALSE; | |
1989 | } | |
1990 | ||
1991 | return TRUE; | |
1992 | } | |
ffed7fef | 1993 | |
ffb4593c NT |
1994 | /* |
1995 | * S_intuit_method | |
1996 | * | |
1997 | * Does all the checking to disambiguate | |
1998 | * foo bar | |
1999 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
2000 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
2001 | * | |
2002 | * First argument is the stuff after the first token, e.g. "bar". | |
2003 | * | |
2004 | * Not a method if bar is a filehandle. | |
2005 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
2006 | * Not a method if it's really "Foo $bar" | |
2007 | * Method if it's "foo $bar" | |
2008 | * Not a method if it's really "print foo $bar" | |
2009 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 2010 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 2011 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
2012 | * => |
2013 | */ | |
2014 | ||
76e3520e | 2015 | STATIC int |
cea2e8a9 | 2016 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
2017 | { |
2018 | char *s = start + (*start == '$'); | |
3280af22 | 2019 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2020 | STRLEN len; |
2021 | GV* indirgv; | |
2022 | ||
2023 | if (gv) { | |
b6c543e3 | 2024 | CV *cv; |
a0d0e21e LW |
2025 | if (GvIO(gv)) |
2026 | return 0; | |
b6c543e3 IZ |
2027 | if ((cv = GvCVu(gv))) { |
2028 | char *proto = SvPVX(cv); | |
2029 | if (proto) { | |
2030 | if (*proto == ';') | |
2031 | proto++; | |
2032 | if (*proto == '*') | |
2033 | return 0; | |
2034 | } | |
2035 | } else | |
a0d0e21e LW |
2036 | gv = 0; |
2037 | } | |
8903cb82 | 2038 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
2039 | /* start is the beginning of the possible filehandle/object, |
2040 | * and s is the end of it | |
2041 | * tmpbuf is a copy of it | |
2042 | */ | |
2043 | ||
a0d0e21e | 2044 | if (*start == '$') { |
3280af22 | 2045 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
2046 | return 0; |
2047 | s = skipspace(s); | |
3280af22 NIS |
2048 | PL_bufptr = start; |
2049 | PL_expect = XREF; | |
a0d0e21e LW |
2050 | return *s == '(' ? FUNCMETH : METHOD; |
2051 | } | |
2052 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
2053 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
2054 | len -= 2; | |
2055 | tmpbuf[len] = '\0'; | |
2056 | goto bare_package; | |
2057 | } | |
2058 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 2059 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
2060 | return 0; |
2061 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 2062 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 2063 | s = skipspace(s); |
3280af22 | 2064 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 2065 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 2066 | bare_package: |
3280af22 | 2067 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 2068 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
2069 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
2070 | PL_expect = XTERM; | |
a0d0e21e | 2071 | force_next(WORD); |
3280af22 | 2072 | PL_bufptr = s; |
a0d0e21e LW |
2073 | return *s == '(' ? FUNCMETH : METHOD; |
2074 | } | |
2075 | } | |
2076 | return 0; | |
2077 | } | |
2078 | ||
ffb4593c NT |
2079 | /* |
2080 | * S_incl_perldb | |
2081 | * Return a string of Perl code to load the debugger. If PERL5DB | |
2082 | * is set, it will return the contents of that, otherwise a | |
2083 | * compile-time require of perl5db.pl. | |
2084 | */ | |
2085 | ||
76e3520e | 2086 | STATIC char* |
cea2e8a9 | 2087 | S_incl_perldb(pTHX) |
a0d0e21e | 2088 | { |
3280af22 | 2089 | if (PL_perldb) { |
76e3520e | 2090 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
2091 | |
2092 | if (pdb) | |
2093 | return pdb; | |
93189314 | 2094 | SETERRNO(0,SS_NORMAL); |
a0d0e21e LW |
2095 | return "BEGIN { require 'perl5db.pl' }"; |
2096 | } | |
2097 | return ""; | |
2098 | } | |
2099 | ||
2100 | ||
16d20bd9 | 2101 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 2102 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
2103 | * Note that the filter function only applies to the current source file |
2104 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
2105 | * | |
2106 | * The datasv parameter (which may be NULL) can be used to pass | |
2107 | * private data to this instance of the filter. The filter function | |
2108 | * can recover the SV using the FILTER_DATA macro and use it to | |
2109 | * store private buffers and state information. | |
2110 | * | |
2111 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 2112 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 2113 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
2114 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
2115 | * private use must be set using malloc'd pointers. | |
2116 | */ | |
16d20bd9 AD |
2117 | |
2118 | SV * | |
864dbfa3 | 2119 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 2120 | { |
f4c556ac GS |
2121 | if (!funcp) |
2122 | return Nullsv; | |
2123 | ||
3280af22 NIS |
2124 | if (!PL_rsfp_filters) |
2125 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 2126 | if (!datasv) |
8c52afec | 2127 | datasv = NEWSV(255,0); |
16d20bd9 | 2128 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 2129 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 2130 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 2131 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 2132 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 2133 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
2134 | av_unshift(PL_rsfp_filters, 1); |
2135 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
2136 | return(datasv); |
2137 | } | |
4e553d73 | 2138 | |
16d20bd9 AD |
2139 | |
2140 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2141 | void |
864dbfa3 | 2142 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2143 | { |
e0c19803 | 2144 | SV *datasv; |
fe5a182c | 2145 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2146 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2147 | return; |
2148 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2149 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2150 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2151 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2152 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2153 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2154 | |
16d20bd9 AD |
2155 | return; |
2156 | } | |
2157 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2158 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2159 | } |
2160 | ||
2161 | ||
1de9afcd RGS |
2162 | /* Invoke the idxth filter function for the current rsfp. */ |
2163 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 2164 | I32 |
864dbfa3 | 2165 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 2166 | { |
16d20bd9 AD |
2167 | filter_t funcp; |
2168 | SV *datasv = NULL; | |
e50aee73 | 2169 | |
3280af22 | 2170 | if (!PL_rsfp_filters) |
16d20bd9 | 2171 | return -1; |
1de9afcd | 2172 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
2173 | /* Provide a default input filter to make life easy. */ |
2174 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2175 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2176 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2177 | if (maxlen) { |
16d20bd9 AD |
2178 | /* Want a block */ |
2179 | int len ; | |
2180 | int old_len = SvCUR(buf_sv) ; | |
2181 | ||
2182 | /* ensure buf_sv is large enough */ | |
eb160463 | 2183 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2184 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2185 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2186 | return -1; /* error */ |
2187 | else | |
2188 | return 0 ; /* end of file */ | |
2189 | } | |
16d20bd9 AD |
2190 | SvCUR_set(buf_sv, old_len + len) ; |
2191 | } else { | |
2192 | /* Want a line */ | |
3280af22 NIS |
2193 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2194 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2195 | return -1; /* error */ |
2196 | else | |
2197 | return 0 ; /* end of file */ | |
2198 | } | |
16d20bd9 AD |
2199 | } |
2200 | return SvCUR(buf_sv); | |
2201 | } | |
2202 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 2203 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
2204 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2205 | "filter_read %d: skipped (filter deleted)\n", | |
2206 | idx)); | |
16d20bd9 AD |
2207 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2208 | } | |
2209 | /* Get function pointer hidden within datasv */ | |
4755096e | 2210 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2211 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2212 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2213 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2214 | /* Call function. The function is expected to */ |
2215 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2216 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2217 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2218 | } |
2219 | ||
76e3520e | 2220 | STATIC char * |
cea2e8a9 | 2221 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2222 | { |
c39cd008 | 2223 | #ifdef PERL_CR_FILTER |
3280af22 | 2224 | if (!PL_rsfp_filters) { |
c39cd008 | 2225 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2226 | } |
2227 | #endif | |
3280af22 | 2228 | if (PL_rsfp_filters) { |
55497cff | 2229 | if (!append) |
2230 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2231 | if (FILTER_READ(0, sv, 0) > 0) |
2232 | return ( SvPVX(sv) ) ; | |
2233 | else | |
2234 | return Nullch ; | |
2235 | } | |
9d116dd7 | 2236 | else |
fd049845 | 2237 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2238 | } |
2239 | ||
01ec43d0 GS |
2240 | STATIC HV * |
2241 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2242 | { |
2243 | GV *gv; | |
2244 | ||
01ec43d0 | 2245 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2246 | return PL_curstash; |
2247 | ||
2248 | if (len > 2 && | |
2249 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2250 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2251 | { | |
2252 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2253 | } |
2254 | ||
2255 | /* use constant CLASS => 'MyClass' */ | |
2256 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2257 | SV *sv; | |
2258 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2259 | pkgname = SvPV_nolen(sv); | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | return gv_stashpv(pkgname, FALSE); | |
2264 | } | |
a0d0e21e | 2265 | |
748a9306 LW |
2266 | #ifdef DEBUGGING |
2267 | static char* exp_name[] = | |
09bef843 | 2268 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 2269 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 2270 | }; |
748a9306 | 2271 | #endif |
463ee0b2 | 2272 | |
02aa26ce NT |
2273 | /* |
2274 | yylex | |
2275 | ||
2276 | Works out what to call the token just pulled out of the input | |
2277 | stream. The yacc parser takes care of taking the ops we return and | |
2278 | stitching them into a tree. | |
2279 | ||
2280 | Returns: | |
2281 | PRIVATEREF | |
2282 | ||
2283 | Structure: | |
2284 | if read an identifier | |
2285 | if we're in a my declaration | |
2286 | croak if they tried to say my($foo::bar) | |
2287 | build the ops for a my() declaration | |
2288 | if it's an access to a my() variable | |
2289 | are we in a sort block? | |
2290 | croak if my($a); $a <=> $b | |
2291 | build ops for access to a my() variable | |
2292 | if in a dq string, and they've said @foo and we can't find @foo | |
2293 | croak | |
2294 | build ops for a bareword | |
2295 | if we already built the token before, use it. | |
2296 | */ | |
2297 | ||
20141f0e | 2298 | |
dba4d153 JH |
2299 | #ifdef __SC__ |
2300 | #pragma segment Perl_yylex | |
2301 | #endif | |
dba4d153 | 2302 | int |
dba4d153 | 2303 | Perl_yylex(pTHX) |
20141f0e | 2304 | { |
3afc138a | 2305 | register char *s = PL_bufptr; |
378cc40b | 2306 | register char *d; |
79072805 | 2307 | register I32 tmp; |
463ee0b2 | 2308 | STRLEN len; |
161b471a NIS |
2309 | GV *gv = Nullgv; |
2310 | GV **gvp = 0; | |
aa7440fb | 2311 | bool bof = FALSE; |
1d239bbb | 2312 | I32 orig_keyword = 0; |
a687059c | 2313 | |
bbf60fe6 DM |
2314 | DEBUG_T( { |
2315 | PerlIO_printf(Perl_debug_log, "### LEX_%s\n", | |
2316 | lex_state_names[PL_lex_state]); | |
2317 | } ); | |
02aa26ce | 2318 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2319 | if (PL_pending_ident) |
bbf60fe6 | 2320 | return REPORT(S_pending_ident(aTHX)); |
bbce6d69 | 2321 | |
02aa26ce NT |
2322 | /* no identifier pending identification */ |
2323 | ||
3280af22 | 2324 | switch (PL_lex_state) { |
79072805 LW |
2325 | #ifdef COMMENTARY |
2326 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2327 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2328 | break; | |
2329 | #endif | |
2330 | ||
09bef843 | 2331 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2332 | case LEX_KNOWNEXT: |
3280af22 NIS |
2333 | PL_nexttoke--; |
2334 | yylval = PL_nextval[PL_nexttoke]; | |
2335 | if (!PL_nexttoke) { | |
2336 | PL_lex_state = PL_lex_defer; | |
2337 | PL_expect = PL_lex_expect; | |
2338 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2339 | } |
607df283 | 2340 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2341 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2342 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2343 | |
bbf60fe6 | 2344 | return REPORT(PL_nexttype[PL_nexttoke]); |
79072805 | 2345 | |
02aa26ce | 2346 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2347 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2348 | */ |
79072805 LW |
2349 | case LEX_INTERPCASEMOD: |
2350 | #ifdef DEBUGGING | |
3280af22 | 2351 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2352 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2353 | #endif |
02aa26ce | 2354 | /* handle \E or end of string */ |
3280af22 | 2355 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2356 | char oldmod; |
02aa26ce NT |
2357 | |
2358 | /* if at a \E */ | |
3280af22 NIS |
2359 | if (PL_lex_casemods) { |
2360 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2361 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2362 | |
3792a11b NC |
2363 | if (PL_bufptr != PL_bufend |
2364 | && (oldmod == 'L' || oldmod == 'U' || oldmod == 'Q')) { | |
3280af22 NIS |
2365 | PL_bufptr += 2; |
2366 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2367 | } |
bbf60fe6 | 2368 | return REPORT(')'); |
79072805 | 2369 | } |
3280af22 NIS |
2370 | if (PL_bufptr != PL_bufend) |
2371 | PL_bufptr += 2; | |
2372 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2373 | return yylex(); |
79072805 LW |
2374 | } |
2375 | else { | |
607df283 | 2376 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2377 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2378 | s = PL_bufptr + 1; |
6e909404 JH |
2379 | if (s[1] == '\\' && s[2] == 'E') { |
2380 | PL_bufptr = s + 3; | |
2381 | PL_lex_state = LEX_INTERPCONCAT; | |
2382 | return yylex(); | |
a0d0e21e | 2383 | } |
6e909404 JH |
2384 | else { |
2385 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
2386 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
3792a11b | 2387 | if ((*s == 'L' || *s == 'U') && |
6e909404 JH |
2388 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { |
2389 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
bbf60fe6 | 2390 | return REPORT(')'); |
6e909404 JH |
2391 | } |
2392 | if (PL_lex_casemods > 10) | |
2393 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2394 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
2395 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2396 | PL_lex_state = LEX_INTERPCONCAT; | |
2397 | PL_nextval[PL_nexttoke].ival = 0; | |
2398 | force_next('('); | |
2399 | if (*s == 'l') | |
2400 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; | |
2401 | else if (*s == 'u') | |
2402 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; | |
2403 | else if (*s == 'L') | |
2404 | PL_nextval[PL_nexttoke].ival = OP_LC; | |
2405 | else if (*s == 'U') | |
2406 | PL_nextval[PL_nexttoke].ival = OP_UC; | |
2407 | else if (*s == 'Q') | |
2408 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; | |
2409 | else | |
2410 | Perl_croak(aTHX_ "panic: yylex"); | |
2411 | PL_bufptr = s + 1; | |
a0d0e21e | 2412 | } |
79072805 | 2413 | force_next(FUNC); |
3280af22 NIS |
2414 | if (PL_lex_starts) { |
2415 | s = PL_bufptr; | |
2416 | PL_lex_starts = 0; | |
131b3ad0 DM |
2417 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2418 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
2419 | OPERATOR(','); | |
2420 | else | |
2421 | Aop(OP_CONCAT); | |
79072805 LW |
2422 | } |
2423 | else | |
cea2e8a9 | 2424 | return yylex(); |
79072805 LW |
2425 | } |
2426 | ||
55497cff | 2427 | case LEX_INTERPPUSH: |
bbf60fe6 | 2428 | return REPORT(sublex_push()); |
55497cff | 2429 | |
79072805 | 2430 | case LEX_INTERPSTART: |
3280af22 | 2431 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2432 | return REPORT(sublex_done()); |
607df283 | 2433 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2434 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2435 | PL_expect = XTERM; |
2436 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2437 | PL_lex_state = LEX_INTERPNORMAL; | |
2438 | if (PL_lex_dojoin) { | |
2439 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2440 | force_next(','); |
a0d0e21e | 2441 | force_ident("\"", '$'); |
3280af22 | 2442 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2443 | force_next('$'); |
3280af22 | 2444 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2445 | force_next('('); |
3280af22 | 2446 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2447 | force_next(FUNC); |
2448 | } | |
3280af22 NIS |
2449 | if (PL_lex_starts++) { |
2450 | s = PL_bufptr; | |
131b3ad0 DM |
2451 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2452 | if (!PL_lex_casemods && PL_lex_inpat) | |
2453 | OPERATOR(','); | |
2454 | else | |
2455 | Aop(OP_CONCAT); | |
79072805 | 2456 | } |
cea2e8a9 | 2457 | return yylex(); |
79072805 LW |
2458 | |
2459 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2460 | if (intuit_more(PL_bufptr)) { |
2461 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2462 | break; |
2463 | } | |
2464 | /* FALL THROUGH */ | |
2465 | ||
2466 | case LEX_INTERPEND: | |
3280af22 NIS |
2467 | if (PL_lex_dojoin) { |
2468 | PL_lex_dojoin = FALSE; | |
2469 | PL_lex_state = LEX_INTERPCONCAT; | |
bbf60fe6 | 2470 | return REPORT(')'); |
79072805 | 2471 | } |
43a16006 | 2472 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2473 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2474 | { |
e9fa98b2 | 2475 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2476 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2477 | PL_lex_repl = Nullsv; |
2478 | } | |
79072805 LW |
2479 | /* FALLTHROUGH */ |
2480 | case LEX_INTERPCONCAT: | |
2481 | #ifdef DEBUGGING | |
3280af22 | 2482 | if (PL_lex_brackets) |
cea2e8a9 | 2483 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2484 | #endif |
3280af22 | 2485 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2486 | return REPORT(sublex_done()); |
79072805 | 2487 | |
3280af22 NIS |
2488 | if (SvIVX(PL_linestr) == '\'') { |
2489 | SV *sv = newSVsv(PL_linestr); | |
2490 | if (!PL_lex_inpat) | |
76e3520e | 2491 | sv = tokeq(sv); |
3280af22 | 2492 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2493 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2494 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2495 | s = PL_bufend; |
79072805 LW |
2496 | } |
2497 | else { | |
3280af22 | 2498 | s = scan_const(PL_bufptr); |
79072805 | 2499 | if (*s == '\\') |
3280af22 | 2500 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2501 | else |
3280af22 | 2502 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2503 | } |
2504 | ||
3280af22 NIS |
2505 | if (s != PL_bufptr) { |
2506 | PL_nextval[PL_nexttoke] = yylval; | |
2507 | PL_expect = XTERM; | |
79072805 | 2508 | force_next(THING); |
131b3ad0 DM |
2509 | if (PL_lex_starts++) { |
2510 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ | |
2511 | if (!PL_lex_casemods && PL_lex_inpat) | |
2512 | OPERATOR(','); | |
2513 | else | |
2514 | Aop(OP_CONCAT); | |
2515 | } | |
79072805 | 2516 | else { |
3280af22 | 2517 | PL_bufptr = s; |
cea2e8a9 | 2518 | return yylex(); |
79072805 LW |
2519 | } |
2520 | } | |
2521 | ||
cea2e8a9 | 2522 | return yylex(); |
a0d0e21e | 2523 | case LEX_FORMLINE: |
3280af22 NIS |
2524 | PL_lex_state = LEX_NORMAL; |
2525 | s = scan_formline(PL_bufptr); | |
2526 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2527 | goto rightbracket; |
2528 | OPERATOR(';'); | |
79072805 LW |
2529 | } |
2530 | ||
3280af22 NIS |
2531 | s = PL_bufptr; |
2532 | PL_oldoldbufptr = PL_oldbufptr; | |
2533 | PL_oldbufptr = s; | |
607df283 | 2534 | DEBUG_T( { |
bbf60fe6 | 2535 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at [%s]\n", |
bf49b057 | 2536 | exp_name[PL_expect], s); |
5f80b19c | 2537 | } ); |
463ee0b2 LW |
2538 | |
2539 | retry: | |
378cc40b LW |
2540 | switch (*s) { |
2541 | default: | |
7e2040f0 | 2542 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2543 | goto keylookup; |
cea2e8a9 | 2544 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2545 | case 4: |
2546 | case 26: | |
2547 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2548 | case 0: |
3280af22 NIS |
2549 | if (!PL_rsfp) { |
2550 | PL_last_uni = 0; | |
2551 | PL_last_lop = 0; | |
c5ee2135 WL |
2552 | if (PL_lex_brackets) { |
2553 | if (PL_lex_formbrack) | |
2554 | yyerror("Format not terminated"); | |
2555 | else | |
2556 | yyerror("Missing right curly or square bracket"); | |
2557 | } | |
4e553d73 | 2558 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2559 | "### Tokener got EOF\n"); |
5f80b19c | 2560 | } ); |
79072805 | 2561 | TOKEN(0); |
463ee0b2 | 2562 | } |
3280af22 | 2563 | if (s++ < PL_bufend) |
a687059c | 2564 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2565 | PL_last_uni = 0; |
2566 | PL_last_lop = 0; | |
2567 | if (!PL_in_eval && !PL_preambled) { | |
2568 | PL_preambled = TRUE; | |
2569 | sv_setpv(PL_linestr,incl_perldb()); | |
2570 | if (SvCUR(PL_linestr)) | |
2571 | sv_catpv(PL_linestr,";"); | |
2572 | if (PL_preambleav){ | |
2573 | while(AvFILLp(PL_preambleav) >= 0) { | |
2574 | SV *tmpsv = av_shift(PL_preambleav); | |
2575 | sv_catsv(PL_linestr, tmpsv); | |
2576 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2577 | sv_free(tmpsv); |
2578 | } | |
3280af22 NIS |
2579 | sv_free((SV*)PL_preambleav); |
2580 | PL_preambleav = NULL; | |
91b7def8 | 2581 | } |
3280af22 NIS |
2582 | if (PL_minus_n || PL_minus_p) { |
2583 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2584 | if (PL_minus_l) | |
2585 | sv_catpv(PL_linestr,"chomp;"); | |
2586 | if (PL_minus_a) { | |
3280af22 | 2587 | if (PL_minus_F) { |
3792a11b NC |
2588 | if ((*PL_splitstr == '/' || *PL_splitstr == '\'' |
2589 | || *PL_splitstr == '"') | |
3280af22 | 2590 | && strchr(PL_splitstr + 1, *PL_splitstr)) |
3db68c4c | 2591 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2592 | else { |
2593 | char delim; | |
2594 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2595 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2596 | delim = *s; |
75c72d73 | 2597 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2598 | "q" + (delim == '\''), delim); |
3280af22 | 2599 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2600 | if (*s == '\\') |
3280af22 NIS |
2601 | sv_catpvn(PL_linestr, "\\", 1); |
2602 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2603 | } |
cea2e8a9 | 2604 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2605 | } |
2304df62 AD |
2606 | } |
2607 | else | |
75c72d73 | 2608 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2609 | } |
79072805 | 2610 | } |
3280af22 NIS |
2611 | sv_catpv(PL_linestr, "\n"); |
2612 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2613 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2614 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2615 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2616 | SV *sv = NEWSV(85,0); |
2617 | ||
2618 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2619 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2620 | (void)SvIOK_on(sv); |
2621 | SvIVX(sv) = 0; | |
57843af0 | 2622 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2623 | } |
79072805 | 2624 | goto retry; |
a687059c | 2625 | } |
e929a76b | 2626 | do { |
aa7440fb | 2627 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2628 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2629 | fake_eof: | |
2630 | if (PL_rsfp) { | |
2631 | if (PL_preprocess && !PL_in_eval) | |
2632 | (void)PerlProc_pclose(PL_rsfp); | |
2633 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2634 | PerlIO_clearerr(PL_rsfp); | |
2635 | else | |
2636 | (void)PerlIO_close(PL_rsfp); | |
2637 | PL_rsfp = Nullfp; | |
2638 | PL_doextract = FALSE; | |
2639 | } | |
2640 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2641 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2642 | sv_catpv(PL_linestr,";}"); | |
2643 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2644 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2645 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2646 | PL_minus_n = PL_minus_p = 0; |
2647 | goto retry; | |
2648 | } | |
2649 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2650 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2651 | sv_setpv(PL_linestr,""); |
2652 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2653 | } | |
7aa207d6 JH |
2654 | /* If it looks like the start of a BOM or raw UTF-16, |
2655 | * check if it in fact is. */ | |
2656 | else if (bof && | |
2657 | (*s == 0 || | |
2658 | *(U8*)s == 0xEF || | |
2659 | *(U8*)s >= 0xFE || | |
2660 | s[1] == 0)) { | |
226017aa | 2661 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2662 | # ifdef __GNU_LIBRARY__ |
2663 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2664 | # define FTELL_FOR_PIPE_IS_BROKEN |
2665 | # endif | |
e3f494f1 JH |
2666 | # else |
2667 | # ifdef __GLIBC__ | |
2668 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2669 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2670 | # endif | |
2671 | # endif | |
226017aa DD |
2672 | # endif |
2673 | #endif | |
2674 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2675 | /* This loses the possibility to detect the bof | |
2676 | * situation on perl -P when the libc5 is being used. | |
2677 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2678 | */ | |
2679 | if (!PL_preprocess) | |
7e28d3af | 2680 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2681 | #else |
eb160463 | 2682 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2683 | #endif |
7e28d3af | 2684 | if (bof) { |
3280af22 | 2685 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2686 | s = swallow_bom((U8*)s); |
e929a76b | 2687 | } |
378cc40b | 2688 | } |
3280af22 | 2689 | if (PL_doextract) { |
a0d0e21e LW |
2690 | /* Incest with pod. */ |
2691 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2692 | sv_setpv(PL_linestr, ""); |
2693 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2694 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2695 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2696 | PL_doextract = FALSE; |
a0d0e21e | 2697 | } |
4e553d73 | 2698 | } |
463ee0b2 | 2699 | incline(s); |
3280af22 NIS |
2700 | } while (PL_doextract); |
2701 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2702 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2703 | SV *sv = NEWSV(85,0); |
a687059c | 2704 | |
93a17b20 | 2705 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2706 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2707 | (void)SvIOK_on(sv); |
2708 | SvIVX(sv) = 0; | |
57843af0 | 2709 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2710 | } |
3280af22 | 2711 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2712 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2713 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2714 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2715 | s++; |
a0d0e21e | 2716 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2717 | s++; |
44a8e56a | 2718 | d = Nullch; |
3280af22 | 2719 | if (!PL_in_eval) { |
44a8e56a | 2720 | if (*s == '#' && *(s+1) == '!') |
2721 | d = s + 2; | |
2722 | #ifdef ALTERNATE_SHEBANG | |
2723 | else { | |
2724 | static char as[] = ALTERNATE_SHEBANG; | |
2725 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2726 | d = s + (sizeof(as) - 1); | |
2727 | } | |
2728 | #endif /* ALTERNATE_SHEBANG */ | |
2729 | } | |
2730 | if (d) { | |
b8378b72 | 2731 | char *ipath; |
774d564b | 2732 | char *ipathend; |
b8378b72 | 2733 | |
774d564b | 2734 | while (isSPACE(*d)) |
b8378b72 CS |
2735 | d++; |
2736 | ipath = d; | |
774d564b | 2737 | while (*d && !isSPACE(*d)) |
2738 | d++; | |
2739 | ipathend = d; | |
2740 | ||
2741 | #ifdef ARG_ZERO_IS_SCRIPT | |
2742 | if (ipathend > ipath) { | |
2743 | /* | |
2744 | * HP-UX (at least) sets argv[0] to the script name, | |
2745 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2746 | * at least, set argv[0] to the basename of the Perl | |
2747 | * interpreter. So, having found "#!", we'll set it right. | |
2748 | */ | |
ee2f7564 | 2749 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2750 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2751 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2752 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2753 | SvSETMAGIC(x); |
2754 | } | |
556c1dec JH |
2755 | else { |
2756 | STRLEN blen; | |
2757 | STRLEN llen; | |
2758 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2759 | char *lstart = SvPV(x,llen); | |
2760 | if (llen < blen) { | |
2761 | bstart += blen - llen; | |
2762 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2763 | sv_setpvn(x, ipath, ipathend - ipath); | |
2764 | SvSETMAGIC(x); | |
2765 | } | |
2766 | } | |
2767 | } | |
774d564b | 2768 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2769 | } |
774d564b | 2770 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2771 | |
2772 | /* | |
2773 | * Look for options. | |
2774 | */ | |
748a9306 | 2775 | d = instr(s,"perl -"); |
84e30d1a | 2776 | if (!d) { |
748a9306 | 2777 | d = instr(s,"perl"); |
84e30d1a GS |
2778 | #if defined(DOSISH) |
2779 | /* avoid getting into infinite loops when shebang | |
2780 | * line contains "Perl" rather than "perl" */ | |
2781 | if (!d) { | |
2782 | for (d = ipathend-4; d >= ipath; --d) { | |
2783 | if ((*d == 'p' || *d == 'P') | |
2784 | && !ibcmp(d, "perl", 4)) | |
2785 | { | |
2786 | break; | |
2787 | } | |
2788 | } | |
2789 | if (d < ipath) | |
2790 | d = Nullch; | |
2791 | } | |
2792 | #endif | |
2793 | } | |
44a8e56a | 2794 | #ifdef ALTERNATE_SHEBANG |
2795 | /* | |
2796 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2797 | * character that can be part of a Perl expression, then if | |
2798 | * we see it but not "perl", we're probably looking at the | |
2799 | * start of Perl code, not a request to hand off to some | |
2800 | * other interpreter. Similarly, if "perl" is there, but | |
2801 | * not in the first 'word' of the line, we assume the line | |
2802 | * contains the start of the Perl program. | |
44a8e56a | 2803 | */ |
2804 | if (d && *s != '#') { | |
774d564b | 2805 | char *c = ipath; |
44a8e56a | 2806 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2807 | c++; | |
2808 | if (c < d) | |
2809 | d = Nullch; /* "perl" not in first word; ignore */ | |
2810 | else | |
2811 | *s = '#'; /* Don't try to parse shebang line */ | |
2812 | } | |
774d564b | 2813 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2814 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2815 | if (!d && |
44a8e56a | 2816 | *s == '#' && |
774d564b | 2817 | ipathend > ipath && |
3280af22 | 2818 | !PL_minus_c && |
748a9306 | 2819 | !instr(s,"indir") && |
3280af22 | 2820 | instr(PL_origargv[0],"perl")) |
748a9306 | 2821 | { |
9f68db38 | 2822 | char **newargv; |
9f68db38 | 2823 | |
774d564b | 2824 | *ipathend = '\0'; |
2825 | s = ipathend + 1; | |
3280af22 | 2826 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2827 | s++; |
3280af22 NIS |
2828 | if (s < PL_bufend) { |
2829 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2830 | newargv[1] = s; |
3280af22 | 2831 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2832 | s++; |
2833 | *s = '\0'; | |
3280af22 | 2834 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2835 | } |
2836 | else | |
3280af22 | 2837 | newargv = PL_origargv; |
774d564b | 2838 | newargv[0] = ipath; |
b35112e7 | 2839 | PERL_FPU_PRE_EXEC |
b4748376 | 2840 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 2841 | PERL_FPU_POST_EXEC |
cea2e8a9 | 2842 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2843 | } |
bf4acbe4 | 2844 | #endif |
748a9306 | 2845 | if (d) { |
3280af22 NIS |
2846 | U32 oldpdb = PL_perldb; |
2847 | bool oldn = PL_minus_n; | |
2848 | bool oldp = PL_minus_p; | |
748a9306 LW |
2849 | |
2850 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2851 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2852 | |
2853 | if (*d++ == '-') { | |
a11ec5a9 | 2854 | bool switches_done = PL_doswitches; |
8cc95fdb | 2855 | do { |
2856 | if (*d == 'M' || *d == 'm') { | |
2857 | char *m = d; | |
2858 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2859 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2860 | (int)(d - m), m); |
2861 | } | |
2862 | d = moreswitches(d); | |
2863 | } while (d); | |
f0b2cf55 YST |
2864 | if (PL_doswitches && !switches_done) { |
2865 | int argc = PL_origargc; | |
2866 | char **argv = PL_origargv; | |
2867 | do { | |
2868 | argc--,argv++; | |
2869 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2870 | init_argv_symbols(argc,argv); | |
2871 | } | |
155aba94 GS |
2872 | if ((PERLDB_LINE && !oldpdb) || |
2873 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2874 | /* if we have already added "LINE: while (<>) {", |
2875 | we must not do it again */ | |
748a9306 | 2876 | { |
3280af22 NIS |
2877 | sv_setpv(PL_linestr, ""); |
2878 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2879 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2880 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2881 | PL_preambled = FALSE; |
84902520 | 2882 | if (PERLDB_LINE) |
3280af22 | 2883 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2884 | goto retry; |
2885 | } | |
a11ec5a9 RGS |
2886 | if (PL_doswitches && !switches_done) { |
2887 | int argc = PL_origargc; | |
2888 | char **argv = PL_origargv; | |
2889 | do { | |
2890 | argc--,argv++; | |
2891 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2892 | init_argv_symbols(argc,argv); | |
2893 | } | |
a0d0e21e | 2894 | } |
79072805 | 2895 | } |
9f68db38 | 2896 | } |
79072805 | 2897 | } |
3280af22 NIS |
2898 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2899 | PL_bufptr = s; | |
2900 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2901 | return yylex(); |
ae986130 | 2902 | } |
378cc40b | 2903 | goto retry; |
4fdae800 | 2904 | case '\r': |
6a27c188 | 2905 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2906 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2907 | Perl_croak(aTHX_ |
cc507455 | 2908 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2909 | #endif |
4fdae800 | 2910 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2911 | #ifdef MACOS_TRADITIONAL |
2912 | case '\312': | |
2913 | #endif | |
378cc40b LW |
2914 | s++; |
2915 | goto retry; | |
378cc40b | 2916 | case '#': |
e929a76b | 2917 | case '\n': |
3280af22 | 2918 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2919 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2920 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2921 | CopLINE_dec(PL_curcop); | |
2922 | incline(s); | |
2923 | } | |
3280af22 | 2924 | d = PL_bufend; |
a687059c | 2925 | while (s < d && *s != '\n') |
378cc40b | 2926 | s++; |
0f85fab0 | 2927 | if (s < d) |
378cc40b | 2928 | s++; |
78c267c1 | 2929 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2930 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2931 | incline(s); |
3280af22 NIS |
2932 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2933 | PL_bufptr = s; | |
2934 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2935 | return yylex(); |
a687059c | 2936 | } |
378cc40b | 2937 | } |
a687059c | 2938 | else { |
378cc40b | 2939 | *s = '\0'; |
3280af22 | 2940 | PL_bufend = s; |
a687059c | 2941 | } |
378cc40b LW |
2942 | goto retry; |
2943 | case '-': | |
79072805 | 2944 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2945 | I32 ftst = 0; |
2946 | ||
378cc40b | 2947 | s++; |
3280af22 | 2948 | PL_bufptr = s; |
748a9306 LW |
2949 | tmp = *s++; |
2950 | ||
bf4acbe4 | 2951 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2952 | s++; |
2953 | ||
2954 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2955 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2956 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2957 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2958 | } ); |
748a9306 LW |
2959 | OPERATOR('-'); /* unary minus */ |
2960 | } | |
3280af22 | 2961 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2962 | switch (tmp) { |
e5edeb50 JH |
2963 | case 'r': ftst = OP_FTEREAD; break; |
2964 | case 'w': ftst = OP_FTEWRITE; break; | |
2965 | case 'x': ftst = OP_FTEEXEC; break; | |
2966 | case 'o': ftst = OP_FTEOWNED; break; | |
2967 | case 'R': ftst = OP_FTRREAD; break; | |
2968 | case 'W': ftst = OP_FTRWRITE; break; | |
2969 | case 'X': ftst = OP_FTREXEC; break; | |
2970 | case 'O': ftst = OP_FTROWNED; break; | |
2971 | case 'e': ftst = OP_FTIS; break; | |
2972 | case 'z': ftst = OP_FTZERO; break; | |
2973 | case 's': ftst = OP_FTSIZE; break; | |
2974 | case 'f': ftst = OP_FTFILE; break; | |
2975 | case 'd': ftst = OP_FTDIR; break; | |
2976 | case 'l': ftst = OP_FTLINK; break; | |
2977 | case 'p': ftst = OP_FTPIPE; break; | |
2978 | case 'S': ftst = OP_FTSOCK; break; | |
2979 | case 'u': ftst = OP_FTSUID; break; | |
2980 | case 'g': ftst = OP_FTSGID; break; | |
2981 | case 'k': ftst = OP_FTSVTX; break; | |
2982 | case 'b': ftst = OP_FTBLK; break; | |
2983 | case 'c': ftst = OP_FTCHR; break; | |
2984 | case 't': ftst = OP_FTTTY; break; | |
2985 | case 'T': ftst = OP_FTTEXT; break; | |
2986 | case 'B': ftst = OP_FTBINARY; break; | |
2987 | case 'M': case 'A': case 'C': | |
2988 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2989 | switch (tmp) { | |
2990 | case 'M': ftst = OP_FTMTIME; break; | |
2991 | case 'A': ftst = OP_FTATIME; break; | |
2992 | case 'C': ftst = OP_FTCTIME; break; | |
2993 | default: break; | |
2994 | } | |
2995 | break; | |
378cc40b | 2996 | default: |
378cc40b LW |
2997 | break; |
2998 | } | |
e5edeb50 | 2999 | if (ftst) { |
eb160463 | 3000 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 3001 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 3002 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 3003 | } ); |
e5edeb50 JH |
3004 | FTST(ftst); |
3005 | } | |
3006 | else { | |
3007 | /* Assume it was a minus followed by a one-letter named | |
3008 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 3009 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 RGS |
3010 | "### '-%c' looked like a file test but was not\n", |
3011 | tmp); | |
5f80b19c | 3012 | } ); |
3cf7b4c4 | 3013 | s = --PL_bufptr; |
e5edeb50 | 3014 | } |
378cc40b | 3015 | } |
a687059c LW |
3016 | tmp = *s++; |
3017 | if (*s == tmp) { | |
3018 | s++; | |
3280af22 | 3019 | if (PL_expect == XOPERATOR) |
79072805 LW |
3020 | TERM(POSTDEC); |
3021 | else | |
3022 | OPERATOR(PREDEC); | |
3023 | } | |
3024 | else if (*s == '>') { | |
3025 | s++; | |
3026 | s = skipspace(s); | |
7e2040f0 | 3027 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 3028 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 3029 | TOKEN(ARROW); |
79072805 | 3030 | } |
748a9306 LW |
3031 | else if (*s == '$') |
3032 | OPERATOR(ARROW); | |
463ee0b2 | 3033 | else |
748a9306 | 3034 | TERM(ARROW); |
a687059c | 3035 | } |
3280af22 | 3036 | if (PL_expect == XOPERATOR) |
79072805 LW |
3037 | Aop(OP_SUBTRACT); |
3038 | else { | |
3280af22 | 3039 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3040 | check_uni(); |
79072805 | 3041 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 3042 | } |
79072805 | 3043 | |
378cc40b | 3044 | case '+': |
a687059c LW |
3045 | tmp = *s++; |
3046 | if (*s == tmp) { | |
378cc40b | 3047 | s++; |
3280af22 | 3048 | if (PL_expect == XOPERATOR) |
79072805 LW |
3049 | TERM(POSTINC); |
3050 | else | |
3051 | OPERATOR(PREINC); | |
378cc40b | 3052 | } |
3280af22 | 3053 | if (PL_expect == XOPERATOR) |
79072805 LW |
3054 | Aop(OP_ADD); |
3055 | else { | |
3280af22 | 3056 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3057 | check_uni(); |
a687059c | 3058 | OPERATOR('+'); |
2f3197b3 | 3059 | } |
a687059c | 3060 | |
378cc40b | 3061 | case '*': |
3280af22 NIS |
3062 | if (PL_expect != XOPERATOR) { |
3063 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
3064 | PL_expect = XOPERATOR; | |
3065 | force_ident(PL_tokenbuf, '*'); | |
3066 | if (!*PL_tokenbuf) | |
a0d0e21e | 3067 | PREREF('*'); |
79072805 | 3068 | TERM('*'); |
a687059c | 3069 | } |
79072805 LW |
3070 | s++; |
3071 | if (*s == '*') { | |
a687059c | 3072 | s++; |
79072805 | 3073 | PWop(OP_POW); |
a687059c | 3074 | } |
79072805 LW |
3075 | Mop(OP_MULTIPLY); |
3076 | ||
378cc40b | 3077 | case '%': |
3280af22 | 3078 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 3079 | ++s; |
3080 | Mop(OP_MODULO); | |
a687059c | 3081 | } |
3280af22 NIS |
3082 | PL_tokenbuf[0] = '%'; |
3083 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
3084 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3085 | PREREF('%'); |
a687059c | 3086 | } |
3280af22 | 3087 | PL_pending_ident = '%'; |
bbce6d69 | 3088 | TERM('%'); |
a687059c | 3089 | |
378cc40b | 3090 | case '^': |
79072805 | 3091 | s++; |
a0d0e21e | 3092 | BOop(OP_BIT_XOR); |
79072805 | 3093 | case '[': |
3280af22 | 3094 | PL_lex_brackets++; |
79072805 | 3095 | /* FALL THROUGH */ |
378cc40b | 3096 | case '~': |
378cc40b | 3097 | case ',': |
378cc40b LW |
3098 | tmp = *s++; |
3099 | OPERATOR(tmp); | |
a0d0e21e LW |
3100 | case ':': |
3101 | if (s[1] == ':') { | |
3102 | len = 0; | |
3103 | goto just_a_word; | |
3104 | } | |
3105 | s++; | |
09bef843 SB |
3106 | switch (PL_expect) { |
3107 | OP *attrs; | |
3108 | case XOPERATOR: | |
3109 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
3110 | break; | |
3111 | PL_bufptr = s; /* update in case we back off */ | |
3112 | goto grabattrs; | |
3113 | case XATTRBLOCK: | |
3114 | PL_expect = XBLOCK; | |
3115 | goto grabattrs; | |
3116 | case XATTRTERM: | |
3117 | PL_expect = XTERMBLOCK; | |
3118 | grabattrs: | |
3119 | s = skipspace(s); | |
3120 | attrs = Nullop; | |
7e2040f0 | 3121 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 3122 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
3123 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
3124 | if (tmp < 0) tmp = -tmp; | |
3125 | switch (tmp) { | |
3126 | case KEY_or: | |
3127 | case KEY_and: | |
c963b151 | 3128 | case KEY_err: |
f9829d6b GS |
3129 | case KEY_for: |
3130 | case KEY_unless: | |
3131 | case KEY_if: | |
3132 | case KEY_while: | |
3133 | case KEY_until: | |
3134 | goto got_attrs; | |
3135 | default: | |
3136 | break; | |
3137 | } | |
3138 | } | |
09bef843 SB |
3139 | if (*d == '(') { |
3140 | d = scan_str(d,TRUE,TRUE); | |
3141 | if (!d) { | |
09bef843 SB |
3142 | /* MUST advance bufptr here to avoid bogus |
3143 | "at end of line" context messages from yyerror(). | |
3144 | */ | |
3145 | PL_bufptr = s + len; | |
3146 | yyerror("Unterminated attribute parameter in attribute list"); | |
3147 | if (attrs) | |
3148 | op_free(attrs); | |
bbf60fe6 | 3149 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
3150 | } |
3151 | } | |
3152 | if (PL_lex_stuff) { | |
3153 | SV *sv = newSVpvn(s, len); | |
3154 | sv_catsv(sv, PL_lex_stuff); | |
3155 | attrs = append_elem(OP_LIST, attrs, | |
3156 | newSVOP(OP_CONST, 0, sv)); | |
3157 | SvREFCNT_dec(PL_lex_stuff); | |
3158 | PL_lex_stuff = Nullsv; | |
3159 | } | |
3160 | else { | |
371fce9b DM |
3161 | if (len == 6 && strnEQ(s, "unique", len)) { |
3162 | if (PL_in_my == KEY_our) | |
3163 | #ifdef USE_ITHREADS | |
3164 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); | |
3165 | #else | |
3166 | ; /* skip to avoid loading attributes.pm */ | |
3167 | #endif | |
3168 | else | |
3169 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); | |
3170 | } | |
3171 | ||
d3cea301 SB |
3172 | /* NOTE: any CV attrs applied here need to be part of |
3173 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
371fce9b | 3174 | else if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
78f9721b SM |
3175 | CvLVALUE_on(PL_compcv); |
3176 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3177 | CvLOCKED_on(PL_compcv); | |
3178 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3179 | CvMETHOD_on(PL_compcv); | |
06492da6 SF |
3180 | else if (!PL_in_my && len == 9 && strnEQ(s, "assertion", len)) |
3181 | CvASSERTION_on(PL_compcv); | |
78f9721b SM |
3182 | /* After we've set the flags, it could be argued that |
3183 | we don't need to do the attributes.pm-based setting | |
3184 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3185 | flags. To experiment with that, uncomment the |
3186 | following "else". (Note that's already been | |
3187 | uncommented. That keeps the above-applied built-in | |
3188 | attributes from being intercepted (and possibly | |
3189 | rejected) by a package's attribute routines, but is | |
3190 | justified by the performance win for the common case | |
3191 | of applying only built-in attributes.) */ | |
0256094b | 3192 | else |
78f9721b SM |
3193 | attrs = append_elem(OP_LIST, attrs, |
3194 | newSVOP(OP_CONST, 0, | |
3195 | newSVpvn(s, len))); | |
09bef843 SB |
3196 | } |
3197 | s = skipspace(d); | |
0120eecf | 3198 | if (*s == ':' && s[1] != ':') |
09bef843 | 3199 | s = skipspace(s+1); |
0120eecf GS |
3200 | else if (s == d) |
3201 | break; /* require real whitespace or :'s */ | |
09bef843 | 3202 | } |
f9829d6b | 3203 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3204 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3205 | char q = ((*s == '\'') ? '"' : '\''); |
3206 | /* If here for an expression, and parsed no attrs, back off. */ | |
3207 | if (tmp == '=' && !attrs) { | |
3208 | s = PL_bufptr; | |
3209 | break; | |
3210 | } | |
3211 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3212 | context messages from yyerror(). | |
3213 | */ | |
3214 | PL_bufptr = s; | |
3215 | if (!*s) | |
3216 | yyerror("Unterminated attribute list"); | |
3217 | else | |
3218 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3219 | q, *s, q)); | |
3220 | if (attrs) | |
3221 | op_free(attrs); | |
3222 | OPERATOR(':'); | |
3223 | } | |
f9829d6b | 3224 | got_attrs: |
09bef843 SB |
3225 | if (attrs) { |
3226 | PL_nextval[PL_nexttoke].opval = attrs; | |
3227 | force_next(THING); | |
3228 | } | |
3229 | TOKEN(COLONATTR); | |
3230 | } | |
a0d0e21e | 3231 | OPERATOR(':'); |
8990e307 LW |
3232 | case '(': |
3233 | s++; | |
3280af22 NIS |
3234 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3235 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3236 | else |
3280af22 | 3237 | PL_expect = XTERM; |
4a202259 | 3238 | s = skipspace(s); |
a0d0e21e | 3239 | TOKEN('('); |
378cc40b | 3240 | case ';': |
f4dd75d9 | 3241 | CLINE; |
378cc40b LW |
3242 | tmp = *s++; |
3243 | OPERATOR(tmp); | |
3244 | case ')': | |
378cc40b | 3245 | tmp = *s++; |
16d20bd9 AD |
3246 | s = skipspace(s); |
3247 | if (*s == '{') | |
3248 | PREBLOCK(tmp); | |
378cc40b | 3249 | TERM(tmp); |
79072805 LW |
3250 | case ']': |
3251 | s++; | |
3280af22 | 3252 | if (PL_lex_brackets <= 0) |
d98d5fff | 3253 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3254 | else |
3280af22 NIS |
3255 | --PL_lex_brackets; |
3256 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3257 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3258 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3259 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3260 | } |
3261 | } | |
4633a7c4 | 3262 | TERM(']'); |
79072805 LW |
3263 | case '{': |
3264 | leftbracket: | |
79072805 | 3265 | s++; |
3280af22 | 3266 | if (PL_lex_brackets > 100) { |
8edd5f42 | 3267 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 3268 | } |
3280af22 | 3269 | switch (PL_expect) { |
a0d0e21e | 3270 | case XTERM: |
3280af22 | 3271 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3272 | s--; |
3273 | PRETERMBLOCK(DO); | |
3274 | } | |
3280af22 NIS |
3275 | if (PL_oldoldbufptr == PL_last_lop) |
3276 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3277 | else |
3280af22 | 3278 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3279 | OPERATOR(HASHBRACK); |
a0d0e21e | 3280 | case XOPERATOR: |
bf4acbe4 | 3281 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3282 | s++; |
44a8e56a | 3283 | d = s; |
3280af22 NIS |
3284 | PL_tokenbuf[0] = '\0'; |
3285 | if (d < PL_bufend && *d == '-') { | |
3286 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3287 | d++; |
bf4acbe4 | 3288 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3289 | d++; |
3290 | } | |
7e2040f0 | 3291 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3292 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3293 | FALSE, &len); |
bf4acbe4 | 3294 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3295 | d++; |
3296 | if (*d == '}') { | |
3280af22 | 3297 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3298 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3299 | if (minus) | |
3300 | force_next('-'); | |
748a9306 LW |
3301 | } |
3302 | } | |
3303 | /* FALL THROUGH */ | |
09bef843 | 3304 | case XATTRBLOCK: |
748a9306 | 3305 | case XBLOCK: |
3280af22 NIS |
3306 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3307 | PL_expect = XSTATE; | |
a0d0e21e | 3308 | break; |
09bef843 | 3309 | case XATTRTERM: |
a0d0e21e | 3310 | case XTERMBLOCK: |
3280af22 NIS |
3311 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3312 | PL_expect = XSTATE; | |
a0d0e21e LW |
3313 | break; |
3314 | default: { | |
3315 | char *t; | |
3280af22 NIS |
3316 | if (PL_oldoldbufptr == PL_last_lop) |
3317 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3318 | else |
3280af22 | 3319 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3320 | s = skipspace(s); |
8452ff4b SB |
3321 | if (*s == '}') { |
3322 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3323 | PL_expect = XTERM; | |
3324 | /* This hack is to get the ${} in the message. */ | |
3325 | PL_bufptr = s+1; | |
3326 | yyerror("syntax error"); | |
3327 | break; | |
3328 | } | |
a0d0e21e | 3329 | OPERATOR(HASHBRACK); |
8452ff4b | 3330 | } |
b8a4b1be GS |
3331 | /* This hack serves to disambiguate a pair of curlies |
3332 | * as being a block or an anon hash. Normally, expectation | |
3333 | * determines that, but in cases where we're not in a | |
3334 | * position to expect anything in particular (like inside | |
3335 | * eval"") we have to resolve the ambiguity. This code | |
3336 | * covers the case where the first term in the curlies is a | |
3337 | * quoted string. Most other cases need to be explicitly | |
3338 | * disambiguated by prepending a `+' before the opening | |
3339 | * curly in order to force resolution as an anon hash. | |
3340 | * | |
3341 | * XXX should probably propagate the outer expectation | |
3342 | * into eval"" to rely less on this hack, but that could | |
3343 | * potentially break current behavior of eval"". | |
3344 | * GSAR 97-07-21 | |
3345 | */ | |
3346 | t = s; | |
3347 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3348 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3349 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3350 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3351 | t++; | |
3352 | t++; | |
a0d0e21e | 3353 | } |
b8a4b1be | 3354 | else if (*s == 'q') { |
3280af22 | 3355 | if (++t < PL_bufend |
b8a4b1be | 3356 | && (!isALNUM(*t) |
3280af22 | 3357 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3358 | && !isALNUM(*t)))) |
3359 | { | |
abc667d1 | 3360 | /* skip q//-like construct */ |
b8a4b1be GS |
3361 | char *tmps; |
3362 | char open, close, term; | |
3363 | I32 brackets = 1; | |
3364 | ||
3280af22 | 3365 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 3366 | t++; |
abc667d1 DM |
3367 | /* check for q => */ |
3368 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
3369 | OPERATOR(HASHBRACK); | |
3370 | } | |
b8a4b1be GS |
3371 | term = *t; |
3372 | open = term; | |
3373 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3374 | term = tmps[5]; | |
3375 | close = term; | |
3376 | if (open == close) | |
3280af22 NIS |
3377 | for (t++; t < PL_bufend; t++) { |
3378 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3379 | t++; |
6d07e5e9 | 3380 | else if (*t == open) |
b8a4b1be GS |
3381 | break; |
3382 | } | |
abc667d1 | 3383 | else { |
3280af22 NIS |
3384 | for (t++; t < PL_bufend; t++) { |
3385 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3386 | t++; |
6d07e5e9 | 3387 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3388 | break; |
3389 | else if (*t == open) | |
3390 | brackets++; | |
3391 | } | |
abc667d1 DM |
3392 | } |
3393 | t++; | |
b8a4b1be | 3394 | } |
abc667d1 DM |
3395 | else |
3396 | /* skip plain q word */ | |
3397 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
3398 | t += UTF8SKIP(t); | |
a0d0e21e | 3399 | } |
7e2040f0 | 3400 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3401 | t += UTF8SKIP(t); |
7e2040f0 | 3402 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3403 | t += UTF8SKIP(t); |
a0d0e21e | 3404 | } |
3280af22 | 3405 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3406 | t++; |
b8a4b1be GS |
3407 | /* if comma follows first term, call it an anon hash */ |
3408 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3409 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3410 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3411 | OPERATOR(HASHBRACK); |
3280af22 | 3412 | if (PL_expect == XREF) |
4e4e412b | 3413 | PL_expect = XTERM; |
a0d0e21e | 3414 | else { |
3280af22 NIS |
3415 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3416 | PL_expect = XSTATE; | |
a0d0e21e | 3417 | } |
8990e307 | 3418 | } |
a0d0e21e | 3419 | break; |
463ee0b2 | 3420 | } |
57843af0 | 3421 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3422 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3423 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3424 | TOKEN('{'); |
378cc40b | 3425 | case '}': |
79072805 LW |
3426 | rightbracket: |
3427 | s++; | |
3280af22 | 3428 | if (PL_lex_brackets <= 0) |
d98d5fff | 3429 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3430 | else |
3280af22 | 3431 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3432 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3433 | PL_lex_formbrack = 0; |
3434 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3435 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3436 | if (PL_expect & XFAKEBRACK) { |
3437 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3438 | PL_lex_state = LEX_INTERPEND; |
3439 | PL_bufptr = s; | |
cea2e8a9 | 3440 | return yylex(); /* ignore fake brackets */ |
79072805 | 3441 | } |
fa83b5b6 | 3442 | if (*s == '-' && s[1] == '>') |
3280af22 | 3443 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3444 | else if (*s != '[' && *s != '{') |
3280af22 | 3445 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3446 | } |
3447 | } | |
9059aa12 LW |
3448 | if (PL_expect & XFAKEBRACK) { |
3449 | PL_expect &= XENUMMASK; | |
3280af22 | 3450 | PL_bufptr = s; |
cea2e8a9 | 3451 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3452 | } |
79072805 LW |
3453 | force_next('}'); |
3454 | TOKEN(';'); | |
378cc40b LW |
3455 | case '&': |
3456 | s++; | |
3457 | tmp = *s++; | |
3458 | if (tmp == '&') | |
a0d0e21e | 3459 | AOPERATOR(ANDAND); |
378cc40b | 3460 | s--; |
3280af22 | 3461 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3462 | if (ckWARN(WARN_SEMICOLON) |
3463 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3464 | { | |
57843af0 | 3465 | CopLINE_dec(PL_curcop); |
9014280d | 3466 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3467 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3468 | } |
79072805 | 3469 | BAop(OP_BIT_AND); |
463ee0b2 | 3470 | } |
79072805 | 3471 | |
3280af22 NIS |
3472 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3473 | if (*PL_tokenbuf) { | |
3474 | PL_expect = XOPERATOR; | |
3475 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3476 | } |
79072805 LW |
3477 | else |
3478 | PREREF('&'); | |
c07a80fd | 3479 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3480 | TERM('&'); |
3481 | ||
378cc40b LW |
3482 | case '|': |
3483 | s++; | |
3484 | tmp = *s++; | |
3485 | if (tmp == '|') | |
a0d0e21e | 3486 | AOPERATOR(OROR); |
378cc40b | 3487 | s--; |
79072805 | 3488 | BOop(OP_BIT_OR); |
378cc40b LW |
3489 | case '=': |
3490 | s++; | |
3491 | tmp = *s++; | |
3492 | if (tmp == '=') | |
79072805 LW |
3493 | Eop(OP_EQ); |
3494 | if (tmp == '>') | |
3495 | OPERATOR(','); | |
378cc40b | 3496 | if (tmp == '~') |
79072805 | 3497 | PMop(OP_MATCH); |
599cee73 | 3498 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3499 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3500 | s--; |
3280af22 NIS |
3501 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3502 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3503 | { |
3280af22 NIS |
3504 | if (PL_in_eval && !PL_rsfp) { |
3505 | d = PL_bufend; | |
a5f75d66 AD |
3506 | while (s < d) { |
3507 | if (*s++ == '\n') { | |
3508 | incline(s); | |
3509 | if (strnEQ(s,"=cut",4)) { | |
3510 | s = strchr(s,'\n'); | |
3511 | if (s) | |
3512 | s++; | |
3513 | else | |
3514 | s = d; | |
3515 | incline(s); | |
3516 | goto retry; | |
3517 | } | |
3518 | } | |
3519 | } | |
3520 | goto retry; | |
3521 | } | |
3280af22 NIS |
3522 | s = PL_bufend; |
3523 | PL_doextract = TRUE; | |
a0d0e21e LW |
3524 | goto retry; |
3525 | } | |
3280af22 | 3526 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3527 | char *t; |
51882d45 | 3528 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3529 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3530 | #else |
bf4acbe4 | 3531 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3532 | #endif |
a0d0e21e LW |
3533 | if (*t == '\n' || *t == '#') { |
3534 | s--; | |
3280af22 | 3535 | PL_expect = XBLOCK; |
a0d0e21e LW |
3536 | goto leftbracket; |
3537 | } | |
79072805 | 3538 | } |
a0d0e21e LW |
3539 | yylval.ival = 0; |
3540 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3541 | case '!': |
3542 | s++; | |
3543 | tmp = *s++; | |
984200d0 | 3544 | if (tmp == '=') { |
decca21c YST |
3545 | /* was this !=~ where !~ was meant? |
3546 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
3547 | ||
984200d0 YST |
3548 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { |
3549 | char *t = s+1; | |
3550 | ||
3551 | while (t < PL_bufend && isSPACE(*t)) | |
3552 | ++t; | |
3553 | ||
decca21c YST |
3554 | if (*t == '/' || *t == '?' || |
3555 | ((*t == 'm' || *t == 's' || *t == 'y') && !isALNUM(t[1])) || | |
3556 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
984200d0 YST |
3557 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
3558 | "!=~ should be !~"); | |
3559 | } | |
79072805 | 3560 | Eop(OP_NE); |
984200d0 | 3561 | } |
378cc40b | 3562 | if (tmp == '~') |
79072805 | 3563 | PMop(OP_NOT); |
378cc40b LW |
3564 | s--; |
3565 | OPERATOR('!'); | |
3566 | case '<': | |
3280af22 | 3567 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3568 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3569 | check_uni(); |
79072805 LW |
3570 | if (s[1] == '<') |
3571 | s = scan_heredoc(s); | |
3572 | else | |
3573 | s = scan_inputsymbol(s); | |
3574 | TERM(sublex_start()); | |
378cc40b LW |
3575 | } |
3576 | s++; | |
3577 | tmp = *s++; | |
3578 | if (tmp == '<') | |
79072805 | 3579 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3580 | if (tmp == '=') { |
3581 | tmp = *s++; | |
3582 | if (tmp == '>') | |
79072805 | 3583 | Eop(OP_NCMP); |
395c3793 | 3584 | s--; |
79072805 | 3585 | Rop(OP_LE); |
395c3793 | 3586 | } |
378cc40b | 3587 | s--; |
79072805 | 3588 | Rop(OP_LT); |
378cc40b LW |
3589 | case '>': |
3590 | s++; | |
3591 | tmp = *s++; | |
3592 | if (tmp == '>') | |
79072805 | 3593 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3594 | if (tmp == '=') |
79072805 | 3595 | Rop(OP_GE); |
378cc40b | 3596 | s--; |
79072805 | 3597 | Rop(OP_GT); |
378cc40b LW |
3598 | |
3599 | case '$': | |
bbce6d69 | 3600 | CLINE; |
3601 | ||
3280af22 NIS |
3602 | if (PL_expect == XOPERATOR) { |
3603 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3604 | PL_expect = XTERM; | |
a0d0e21e | 3605 | depcom(); |
bbf60fe6 | 3606 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3607 | } |
8990e307 | 3608 | } |
a0d0e21e | 3609 | |
7e2040f0 | 3610 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3611 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3612 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3613 | sizeof PL_tokenbuf - 1, FALSE); | |
3614 | if (PL_expect == XOPERATOR) | |
3615 | no_op("Array length", s); | |
3280af22 | 3616 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3617 | PREREF(DOLSHARP); |
3280af22 NIS |
3618 | PL_expect = XOPERATOR; |
3619 | PL_pending_ident = '#'; | |
463ee0b2 | 3620 | TOKEN(DOLSHARP); |
79072805 | 3621 | } |
bbce6d69 | 3622 | |
3280af22 | 3623 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3624 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3625 | sizeof PL_tokenbuf - 1, FALSE); | |
3626 | if (PL_expect == XOPERATOR) | |
3627 | no_op("Scalar", s); | |
3280af22 NIS |
3628 | if (!PL_tokenbuf[1]) { |
3629 | if (s == PL_bufend) | |
bbce6d69 | 3630 | yyerror("Final $ should be \\$ or $name"); |
3631 | PREREF('$'); | |
8990e307 | 3632 | } |
a0d0e21e | 3633 | |
bbce6d69 | 3634 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3635 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3636 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3637 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3638 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3639 | TERM(THING); | |
3640 | } | |
3641 | ||
ff68c719 | 3642 | d = s; |
69d2bceb | 3643 | tmp = (I32)*s; |
3280af22 | 3644 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3645 | s = skipspace(s); |
3646 | ||
3280af22 | 3647 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3648 | char *t; |
3649 | if (*s == '[') { | |
3280af22 | 3650 | PL_tokenbuf[0] = '@'; |
599cee73 | 3651 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3652 | for(t = s + 1; |
7e2040f0 | 3653 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3654 | t++) ; |
a0d0e21e | 3655 | if (*t++ == ',') { |
3280af22 NIS |
3656 | PL_bufptr = skipspace(PL_bufptr); |
3657 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3658 | t++; |
9014280d | 3659 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3660 | "Multidimensional syntax %.*s not supported", |
3661 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3662 | } |
3663 | } | |
bbce6d69 | 3664 | } |
3665 | else if (*s == '{') { | |
3280af22 | 3666 | PL_tokenbuf[0] = '%'; |
599cee73 | 3667 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3668 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3669 | { | |
3280af22 | 3670 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3671 | STRLEN len; |
3672 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3673 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3674 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3675 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3676 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3677 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3678 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3679 | } |
93a17b20 LW |
3680 | } |
3681 | } | |
2f3197b3 | 3682 | } |
bbce6d69 | 3683 | |
3280af22 | 3684 | PL_expect = XOPERATOR; |
69d2bceb | 3685 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3686 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3687 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3688 | PL_expect = XOPERATOR; | |
bbce6d69 | 3689 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3690 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3691 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3692 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3693 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3694 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3695 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3696 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3697 | /* binary operators exclude handle interpretations */ |
3698 | switch (tmp) { | |
3699 | case -KEY_x: | |
3700 | case -KEY_eq: | |
3701 | case -KEY_ne: | |
3702 | case -KEY_gt: | |
3703 | case -KEY_lt: | |
3704 | case -KEY_ge: | |
3705 | case -KEY_le: | |
3706 | case -KEY_cmp: | |
3707 | break; | |
3708 | default: | |
3280af22 | 3709 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3710 | break; |
3711 | } | |
3712 | } | |
68dc0745 | 3713 | else { |
8a8635f0 | 3714 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3715 | } |
93a17b20 | 3716 | } |
bbce6d69 | 3717 | else if (isDIGIT(*s)) |
3280af22 | 3718 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3719 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3720 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
3792a11b NC |
3721 | else if ((*s == '?' || *s == '-' || *s == '+') |
3722 | && !isSPACE(s[1]) && s[1] != '=') | |
c963b151 | 3723 | PL_expect = XTERM; /* e.g. print $fh -1 */ |
7ce6e6b9 RGS |
3724 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' && s[1] != '/') |
3725 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
3726 | XXX except DORDOR operator */ | |
e0587a03 | 3727 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3728 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3729 | } |
3280af22 | 3730 | PL_pending_ident = '$'; |
79072805 | 3731 | TOKEN('$'); |
378cc40b LW |
3732 | |
3733 | case '@': | |
3280af22 | 3734 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3735 | no_op("Array", s); |
3280af22 NIS |
3736 | PL_tokenbuf[0] = '@'; |
3737 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3738 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3739 | PREREF('@'); |
3740 | } | |
3280af22 | 3741 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3742 | s = skipspace(s); |
3280af22 | 3743 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3744 | if (*s == '{') |
3280af22 | 3745 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3746 | |
3747 | /* Warn about @ where they meant $. */ | |
599cee73 | 3748 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3749 | if (*s == '[' || *s == '{') { |
3750 | char *t = s + 1; | |
7e2040f0 | 3751 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3752 | t++; |
3753 | if (*t == '}' || *t == ']') { | |
3754 | t++; | |
3280af22 | 3755 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3756 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3757 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3758 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3759 | } |
93a17b20 LW |
3760 | } |
3761 | } | |
463ee0b2 | 3762 | } |
3280af22 | 3763 | PL_pending_ident = '@'; |
79072805 | 3764 | TERM('@'); |
378cc40b | 3765 | |
c963b151 | 3766 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 RGS |
3767 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
3768 | s += 2; | |
3769 | AOPERATOR(DORDOR); | |
3770 | } | |
c963b151 BD |
3771 | case '?': /* may either be conditional or pattern */ |
3772 | if(PL_expect == XOPERATOR) { | |
3773 | tmp = *s++; | |
3774 | if(tmp == '?') { | |
3775 | OPERATOR('?'); | |
3776 | } | |
3777 | else { | |
3778 | tmp = *s++; | |
3779 | if(tmp == '/') { | |
3780 | /* A // operator. */ | |
3781 | AOPERATOR(DORDOR); | |
3782 | } | |
3783 | else { | |
3784 | s--; | |
3785 | Mop(OP_DIVIDE); | |
3786 | } | |
3787 | } | |
3788 | } | |
3789 | else { | |
3790 | /* Disable warning on "study /blah/" */ | |
3791 | if (PL_oldoldbufptr == PL_last_uni | |
3792 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3793 | || memNE(PL_last_uni, "study", 5) | |
3794 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3795 | )) | |
3796 | check_uni(); | |
3797 | s = scan_pat(s,OP_MATCH); | |
3798 | TERM(sublex_start()); | |
3799 | } | |
378cc40b LW |
3800 | |
3801 | case '.': | |
51882d45 GS |
3802 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3803 | #ifdef PERL_STRICT_CR | |
3804 | && s[1] == '\n' | |
3805 | #else | |
3806 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3807 | #endif | |
3808 | && (s == PL_linestart || s[-1] == '\n') ) | |
3809 | { | |
3280af22 NIS |
3810 | PL_lex_formbrack = 0; |
3811 | PL_expect = XSTATE; | |
79072805 LW |
3812 | goto rightbracket; |
3813 | } | |
3280af22 | 3814 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3815 | tmp = *s++; |
a687059c LW |
3816 | if (*s == tmp) { |
3817 | s++; | |
2f3197b3 LW |
3818 | if (*s == tmp) { |
3819 | s++; | |
79072805 | 3820 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3821 | } |
3822 | else | |
79072805 | 3823 | yylval.ival = 0; |
378cc40b | 3824 | OPERATOR(DOTDOT); |
a687059c | 3825 | } |
3280af22 | 3826 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3827 | check_uni(); |
79072805 | 3828 | Aop(OP_CONCAT); |
378cc40b LW |
3829 | } |
3830 | /* FALL THROUGH */ | |
3831 | case '0': case '1': case '2': case '3': case '4': | |
3832 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3833 | s = scan_num(s, &yylval); |
4e553d73 | 3834 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3835 | "### Saw number in '%s'\n", s); |
5f80b19c | 3836 | } ); |
3280af22 | 3837 | if (PL_expect == XOPERATOR) |
8990e307 | 3838 | no_op("Number",s); |
79072805 LW |
3839 | TERM(THING); |
3840 | ||
3841 | case '\'': | |
09bef843 | 3842 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3843 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3844 | "### Saw string before '%s'\n", s); |
5f80b19c | 3845 | } ); |
3280af22 NIS |
3846 | if (PL_expect == XOPERATOR) { |
3847 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3848 | PL_expect = XTERM; | |
a0d0e21e | 3849 | depcom(); |
bbf60fe6 | 3850 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3851 | } |
463ee0b2 | 3852 | else |
8990e307 | 3853 | no_op("String",s); |
463ee0b2 | 3854 | } |
79072805 | 3855 | if (!s) |
85e6fe83 | 3856 | missingterm((char*)0); |
79072805 LW |
3857 | yylval.ival = OP_CONST; |
3858 | TERM(sublex_start()); | |
3859 | ||
3860 | case '"': | |
09bef843 | 3861 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3862 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3863 | "### Saw string before '%s'\n", s); |
5f80b19c | 3864 | } ); |
3280af22 NIS |
3865 | if (PL_expect == XOPERATOR) { |
3866 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3867 | PL_expect = XTERM; | |
a0d0e21e | 3868 | depcom(); |
bbf60fe6 | 3869 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3870 | } |
463ee0b2 | 3871 | else |
8990e307 | 3872 | no_op("String",s); |
463ee0b2 | 3873 | } |
79072805 | 3874 | if (!s) |
85e6fe83 | 3875 | missingterm((char*)0); |
4633a7c4 | 3876 | yylval.ival = OP_CONST; |
3280af22 | 3877 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3878 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3879 | yylval.ival = OP_STRINGIFY; |
3880 | break; | |
3881 | } | |
3882 | } | |
79072805 LW |
3883 | TERM(sublex_start()); |
3884 | ||
3885 | case '`': | |
09bef843 | 3886 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3887 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3888 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3889 | } ); |
3280af22 | 3890 | if (PL_expect == XOPERATOR) |
8990e307 | 3891 | no_op("Backticks",s); |
79072805 | 3892 | if (!s) |
85e6fe83 | 3893 | missingterm((char*)0); |
79072805 LW |
3894 | yylval.ival = OP_BACKTICK; |
3895 | set_csh(); | |
3896 | TERM(sublex_start()); | |
3897 | ||
3898 | case '\\': | |
3899 | s++; | |
599cee73 | 3900 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3901 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3902 | *s, *s); |
3280af22 | 3903 | if (PL_expect == XOPERATOR) |
8990e307 | 3904 | no_op("Backslash",s); |
79072805 LW |
3905 | OPERATOR(REFGEN); |
3906 | ||
a7cb1f99 | 3907 | case 'v': |
e526c9e6 | 3908 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3909 | char *start = s; |
3910 | start++; | |
3911 | start++; | |
dd629d5b | 3912 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3913 | start++; |
3914 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3915 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3916 | TERM(THING); |
3917 | } | |
e526c9e6 | 3918 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
3919 | else if (!isALPHA(*start) && (PL_expect == XTERM |
3920 | || PL_expect == XREF || PL_expect == XSTATE | |
3921 | || PL_expect == XTERMORDORDOR)) { | |
e526c9e6 GS |
3922 | char c = *start; |
3923 | GV *gv; | |
3924 | *start = '\0'; | |
3925 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3926 | *start = c; | |
3927 | if (!gv) { | |
b73d6f50 | 3928 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3929 | TERM(THING); |
3930 | } | |
3931 | } | |
a7cb1f99 GS |
3932 | } |
3933 | goto keylookup; | |
79072805 | 3934 | case 'x': |
3280af22 | 3935 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3936 | s++; |
3937 | Mop(OP_REPEAT); | |
2f3197b3 | 3938 | } |
79072805 LW |
3939 | goto keylookup; |
3940 | ||
378cc40b | 3941 | case '_': |
79072805 LW |
3942 | case 'a': case 'A': |
3943 | case 'b': case 'B': | |
3944 | case 'c': case 'C': | |
3945 | case 'd': case 'D': | |
3946 | case 'e': case 'E': | |
3947 | case 'f': case 'F': | |
3948 | case 'g': case 'G': | |
3949 | case 'h': case 'H': | |
3950 | case 'i': case 'I': | |
3951 | case 'j': case 'J': | |
3952 | case 'k': case 'K': | |
3953 | case 'l': case 'L': | |
3954 | case 'm': case 'M': | |
3955 | case 'n': case 'N': | |
3956 | case 'o': case 'O': | |
3957 | case 'p': case 'P': | |
3958 | case 'q': case 'Q': | |
3959 | case 'r': case 'R': | |
3960 | case 's': case 'S': | |
3961 | case 't': case 'T': | |
3962 | case 'u': case 'U': | |
a7cb1f99 | 3963 | case 'V': |
79072805 LW |
3964 | case 'w': case 'W': |
3965 | case 'X': | |
3966 | case 'y': case 'Y': | |
3967 | case 'z': case 'Z': | |
3968 | ||
49dc05e3 | 3969 | keylookup: { |
1d239bbb | 3970 | orig_keyword = 0; |
161b471a NIS |
3971 | gv = Nullgv; |
3972 | gvp = 0; | |
49dc05e3 | 3973 | |
3280af22 NIS |
3974 | PL_bufptr = s; |
3975 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3976 | |
3977 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3978 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3979 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3980 | (PL_tokenbuf[0] == 'q' && | |
3981 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3982 | |
3983 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3984 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3985 | goto just_a_word; |
3986 | ||
3643fb5f | 3987 | d = s; |
3280af22 | 3988 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3989 | d++; /* no comments skipped here, or s### is misparsed */ |
3990 | ||
3991 | /* Is this a label? */ | |
3280af22 NIS |
3992 | if (!tmp && PL_expect == XSTATE |
3993 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3994 | s = d + 1; |
3280af22 | 3995 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3996 | CLINE; |
3997 | TOKEN(LABEL); | |
3643fb5f CS |
3998 | } |
3999 | ||
4000 | /* Check for keywords */ | |
3280af22 | 4001 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
4002 | |
4003 | /* Is this a word before a => operator? */ | |
1c3923b3 | 4004 | if (*d == '=' && d[1] == '>') { |
748a9306 | 4005 | CLINE; |
3280af22 | 4006 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 4007 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 4008 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4009 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
4010 | TERM(WORD); |
4011 | } | |
4012 | ||
a0d0e21e | 4013 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
4014 | GV *ogv = Nullgv; /* override (winner) */ |
4015 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 4016 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 4017 | CV *cv; |
3280af22 | 4018 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
4019 | (cv = GvCVu(gv))) |
4020 | { | |
4021 | if (GvIMPORTED_CV(gv)) | |
4022 | ogv = gv; | |
4023 | else if (! CvMETHOD(cv)) | |
4024 | hgv = gv; | |
4025 | } | |
4026 | if (!ogv && | |
3280af22 NIS |
4027 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
4028 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
4029 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
4030 | { | |
4031 | ogv = gv; | |
4032 | } | |
4033 | } | |
4034 | if (ogv) { | |
30fe34ed | 4035 | orig_keyword = tmp; |
56f7f34b | 4036 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
4037 | } |
4038 | else if (gv && !gvp | |
4039 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 4040 | && GvCVu(gv) |
3280af22 | 4041 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
4042 | { |
4043 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 4044 | } |
7fc307b5 RGS |
4045 | else if (gv && !gvp |
4046 | && tmp == -KEY_err | |
4047 | && GvCVu(gv) | |
4048 | && PL_expect != XOPERATOR | |
4049 | && PL_expect != XTERMORDORDOR) | |
4050 | { | |
4051 | /* any sub overrides the "err" keyword, except when really an | |
4052 | * operator is expected */ | |
4053 | tmp = 0; | |
4054 | } | |
56f7f34b CS |
4055 | else { /* no override */ |
4056 | tmp = -tmp; | |
ac206dc8 | 4057 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 4058 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
4059 | "dump() better written as CORE::dump()"); |
4060 | } | |
56f7f34b CS |
4061 | gv = Nullgv; |
4062 | gvp = 0; | |
4944e2f7 GS |
4063 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
4064 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 4065 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 4066 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 4067 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 4068 | } |
a0d0e21e LW |
4069 | } |
4070 | ||
4071 | reserved_word: | |
4072 | switch (tmp) { | |
79072805 LW |
4073 | |
4074 | default: /* not a keyword */ | |
93a17b20 | 4075 | just_a_word: { |
96e4d5b1 | 4076 | SV *sv; |
ce29ac45 | 4077 | int pkgname = 0; |
3280af22 | 4078 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
4079 | |
4080 | /* Get the rest if it looks like a package qualifier */ | |
4081 | ||
155aba94 | 4082 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 4083 | STRLEN morelen; |
3280af22 | 4084 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
4085 | TRUE, &morelen); |
4086 | if (!morelen) | |
cea2e8a9 | 4087 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 4088 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 4089 | len += morelen; |
ce29ac45 | 4090 | pkgname = 1; |
a0d0e21e | 4091 | } |
8990e307 | 4092 | |
3280af22 NIS |
4093 | if (PL_expect == XOPERATOR) { |
4094 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 4095 | CopLINE_dec(PL_curcop); |
9014280d | 4096 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 4097 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
4098 | } |
4099 | else | |
54310121 | 4100 | no_op("Bareword",s); |
463ee0b2 | 4101 | } |
8990e307 | 4102 | |
c3e0f903 GS |
4103 | /* Look for a subroutine with this name in current package, |
4104 | unless name is "Foo::", in which case Foo is a bearword | |
4105 | (and a package name). */ | |
4106 | ||
4107 | if (len > 2 && | |
3280af22 | 4108 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 4109 | { |
e476b1b5 | 4110 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 4111 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 4112 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 4113 | PL_tokenbuf); |
c3e0f903 | 4114 | len -= 2; |
3280af22 | 4115 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
4116 | gv = Nullgv; |
4117 | gvp = 0; | |
4118 | } | |
4119 | else { | |
4120 | len = 0; | |
4121 | if (!gv) | |
3280af22 | 4122 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
4123 | } |
4124 | ||
4125 | /* if we saw a global override before, get the right name */ | |
8990e307 | 4126 | |
49dc05e3 | 4127 | if (gvp) { |
79cb57f6 | 4128 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 4129 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
4130 | } |
4131 | else | |
3280af22 | 4132 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 4133 | |
a0d0e21e LW |
4134 | /* Presume this is going to be a bareword of some sort. */ |
4135 | ||
4136 | CLINE; | |
49dc05e3 | 4137 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 4138 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
4139 | /* UTF-8 package name? */ |
4140 | if (UTF && !IN_BYTES && | |
4141 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
4142 | SvUTF8_on(sv); | |
a0d0e21e | 4143 | |
c3e0f903 GS |
4144 | /* And if "Foo::", then that's what it certainly is. */ |
4145 | ||
4146 | if (len) | |
4147 | goto safe_bareword; | |
4148 | ||
8990e307 LW |
4149 | /* See if it's the indirect object for a list operator. */ |
4150 | ||
3280af22 NIS |
4151 | if (PL_oldoldbufptr && |
4152 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
4153 | (PL_oldoldbufptr == PL_last_lop |
4154 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 4155 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
4156 | (PL_expect == XREF || |
4157 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 4158 | { |
748a9306 LW |
4159 | bool immediate_paren = *s == '('; |
4160 | ||
a0d0e21e LW |
4161 | /* (Now we can afford to cross potential line boundary.) */ |
4162 | s = skipspace(s); | |
4163 | ||
4164 | /* Two barewords in a row may indicate method call. */ | |
4165 | ||
7e2040f0 | 4166 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
bbf60fe6 | 4167 | return REPORT(tmp); |
a0d0e21e LW |
4168 | |
4169 | /* If not a declared subroutine, it's an indirect object. */ | |
4170 | /* (But it's an indir obj regardless for sort.) */ | |
4171 | ||
7948272d | 4172 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 4173 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 4174 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 4175 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 4176 | { |
3280af22 | 4177 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 4178 | goto bareword; |
93a17b20 LW |
4179 | } |
4180 | } | |
8990e307 | 4181 | |
3280af22 | 4182 | PL_expect = XOPERATOR; |
8990e307 | 4183 | s = skipspace(s); |
1c3923b3 GS |
4184 | |
4185 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4186 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4187 | CLINE; |
4188 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4189 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4190 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4191 | TERM(WORD); |
4192 | } | |
4193 | ||
4194 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4195 | if (*s == '(') { |
79072805 | 4196 | CLINE; |
96e4d5b1 | 4197 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4198 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4199 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4200 | s = d + 1; |
4201 | goto its_constant; | |
4202 | } | |
4203 | } | |
3280af22 NIS |
4204 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4205 | PL_expect = XOPERATOR; | |
93a17b20 | 4206 | force_next(WORD); |
c07a80fd | 4207 | yylval.ival = 0; |
463ee0b2 | 4208 | TOKEN('&'); |
79072805 | 4209 | } |
93a17b20 | 4210 | |
a0d0e21e | 4211 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4212 | |
8ebc5c01 | 4213 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4214 | PL_last_lop = PL_oldbufptr; |
4215 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4216 | PREBLOCK(METHOD); |
463ee0b2 LW |
4217 | } |
4218 | ||
8990e307 LW |
4219 | /* If followed by a bareword, see if it looks like indir obj. */ |
4220 | ||
30fe34ed RGS |
4221 | if (!orig_keyword |
4222 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
4223 | && (tmp = intuit_method(s,gv))) | |
bbf60fe6 | 4224 | return REPORT(tmp); |
93a17b20 | 4225 | |
8990e307 LW |
4226 | /* Not a method, so call it a subroutine (if defined) */ |
4227 | ||
8ebc5c01 | 4228 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4229 | CV* cv; |
0453d815 | 4230 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4231 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4232 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4233 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4234 | /* Check for a constant sub */ |
46fc3d4c | 4235 | cv = GvCV(gv); |
96e4d5b1 | 4236 | if ((sv = cv_const_sv(cv))) { |
4237 | its_constant: | |
4238 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4239 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4240 | yylval.opval->op_private = 0; | |
4241 | TOKEN(WORD); | |
89bfa8cd | 4242 | } |
4243 | ||
a5f75d66 AD |
4244 | /* Resolve to GV now. */ |
4245 | op_free(yylval.opval); | |
4246 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4247 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4248 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4249 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4250 | /* Is there a prototype? */ |
4251 | if (SvPOK(cv)) { | |
4252 | STRLEN len; | |
7a52d87a | 4253 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4254 | if (!len) |
4255 | TERM(FUNC0SUB); | |
7a52d87a | 4256 | if (strEQ(proto, "$")) |
4633a7c4 | 4257 | OPERATOR(UNIOPSUB); |
0f5d0394 AE |
4258 | while (*proto == ';') |
4259 | proto++; | |
7a52d87a | 4260 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4261 | sv_setpv(PL_subname, PL_curstash ? |
4262 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4263 | PREBLOCK(LSTOPSUB); |
4264 | } | |
a9ef352a | 4265 | } |
3280af22 NIS |
4266 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4267 | PL_expect = XTERM; | |
8990e307 LW |
4268 | force_next(WORD); |
4269 | TOKEN(NOAMP); | |
4270 | } | |
748a9306 | 4271 | |
8990e307 LW |
4272 | /* Call it a bare word */ |
4273 | ||
5603f27d GS |
4274 | if (PL_hints & HINT_STRICT_SUBS) |
4275 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4276 | else { | |
4277 | bareword: | |
4278 | if (ckWARN(WARN_RESERVED)) { | |
4279 | if (lastchar != '-') { | |
4280 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4281 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4282 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4283 | PL_tokenbuf); |
4284 | } | |
748a9306 LW |
4285 | } |
4286 | } | |
c3e0f903 GS |
4287 | |
4288 | safe_bareword: | |
3792a11b NC |
4289 | if ((lastchar == '*' || lastchar == '%' || lastchar == '&') |
4290 | && ckWARN_d(WARN_AMBIGUOUS)) { | |
9014280d | 4291 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4292 | "Operator or semicolon missing before %c%s", |
3280af22 | 4293 | lastchar, PL_tokenbuf); |
9014280d | 4294 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4295 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4296 | lastchar, lastchar); |
4297 | } | |
93a17b20 | 4298 | TOKEN(WORD); |
79072805 | 4299 | } |
79072805 | 4300 | |
68dc0745 | 4301 | case KEY___FILE__: |
46fc3d4c | 4302 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4303 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4304 | TERM(THING); |
4305 | ||
79072805 | 4306 | case KEY___LINE__: |
cf2093f6 | 4307 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4308 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4309 | TERM(THING); |
68dc0745 | 4310 | |
4311 | case KEY___PACKAGE__: | |
4312 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 4313 | (PL_curstash |
9508c957 | 4314 | ? newSVpv(HvNAME(PL_curstash), 0) |
3280af22 | 4315 | : &PL_sv_undef)); |
79072805 | 4316 | TERM(THING); |
79072805 | 4317 | |
e50aee73 | 4318 | case KEY___DATA__: |
79072805 LW |
4319 | case KEY___END__: { |
4320 | GV *gv; | |
79072805 LW |
4321 | |
4322 | /*SUPPRESS 560*/ | |
3280af22 | 4323 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4324 | char *pname = "main"; |
3280af22 NIS |
4325 | if (PL_tokenbuf[2] == 'D') |
4326 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4327 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4328 | GvMULTI_on(gv); |
79072805 | 4329 | if (!GvIO(gv)) |
a0d0e21e | 4330 | GvIOp(gv) = newIO(); |
3280af22 | 4331 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4332 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4333 | { | |
3280af22 | 4334 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4335 | fcntl(fd,F_SETFD,fd >= 3); |
4336 | } | |
79072805 | 4337 | #endif |
fd049845 | 4338 | /* Mark this internal pseudo-handle as clean */ |
4339 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4340 | if (PL_preprocess) |
50952442 | 4341 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4342 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4343 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4344 | else |
50952442 | 4345 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4346 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4347 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4348 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4349 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4350 | if (PL_bufend-PL_bufptr > 2 |
4351 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4352 | { |
4353 | Off_t loc = 0; | |
50952442 | 4354 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4355 | loc = PerlIO_tell(PL_rsfp); |
4356 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4357 | } | |
2986a63f JH |
4358 | #ifdef NETWARE |
4359 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4360 | #else | |
c39cd008 | 4361 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4362 | #endif /* NETWARE */ |
1143fce0 JH |
4363 | #ifdef PERLIO_IS_STDIO /* really? */ |
4364 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4365 | /* XXX see note in do_binmode() */ |
4366 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4367 | # endif |
4368 | #endif | |
c39cd008 GS |
4369 | if (loc > 0) |
4370 | PerlIO_seek(PL_rsfp, loc, 0); | |
4371 | } | |
4372 | } | |
4373 | #endif | |
7948272d | 4374 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
4375 | if (!IN_BYTES) { |
4376 | if (UTF) | |
4377 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
4378 | else if (PL_encoding) { | |
4379 | SV *name; | |
4380 | dSP; | |
4381 | ENTER; | |
4382 | SAVETMPS; | |
4383 | PUSHMARK(sp); | |
4384 | EXTEND(SP, 1); | |
4385 | XPUSHs(PL_encoding); | |
4386 | PUTBACK; | |
4387 | call_method("name", G_SCALAR); | |
4388 | SPAGAIN; | |
4389 | name = POPs; | |
4390 | PUTBACK; | |
4391 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, | |
4392 | Perl_form(aTHX_ ":encoding(%"SVf")", | |
4393 | name)); | |
4394 | FREETMPS; | |
4395 | LEAVE; | |
4396 | } | |
4397 | } | |
7948272d | 4398 | #endif |
3280af22 | 4399 | PL_rsfp = Nullfp; |
79072805 LW |
4400 | } |
4401 | goto fake_eof; | |
e929a76b | 4402 | } |
de3bb511 | 4403 | |
8990e307 | 4404 | case KEY_AUTOLOAD: |
ed6116ce | 4405 | case KEY_DESTROY: |
79072805 | 4406 | case KEY_BEGIN: |
7d30b5c4 | 4407 | case KEY_CHECK: |
7d07dbc2 | 4408 | case KEY_INIT: |
7d30b5c4 | 4409 | case KEY_END: |
3280af22 NIS |
4410 | if (PL_expect == XSTATE) { |
4411 | s = PL_bufptr; | |
93a17b20 | 4412 | goto really_sub; |
79072805 LW |
4413 | } |
4414 | goto just_a_word; | |
4415 | ||
a0d0e21e LW |
4416 | case KEY_CORE: |
4417 | if (*s == ':' && s[1] == ':') { | |
4418 | s += 2; | |
748a9306 | 4419 | d = s; |
3280af22 | 4420 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4421 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4422 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4423 | if (tmp < 0) |
4424 | tmp = -tmp; | |
4425 | goto reserved_word; | |
4426 | } | |
4427 | goto just_a_word; | |
4428 | ||
463ee0b2 LW |
4429 | case KEY_abs: |
4430 | UNI(OP_ABS); | |
4431 | ||
79072805 LW |
4432 | case KEY_alarm: |
4433 | UNI(OP_ALARM); | |
4434 | ||
4435 | case KEY_accept: | |
a0d0e21e | 4436 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4437 | |
463ee0b2 LW |
4438 | case KEY_and: |
4439 | OPERATOR(ANDOP); | |
4440 | ||
79072805 | 4441 | case KEY_atan2: |
a0d0e21e | 4442 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4443 | |
79072805 | 4444 | case KEY_bind: |
a0d0e21e | 4445 | LOP(OP_BIND,XTERM); |
79072805 LW |
4446 | |
4447 | case KEY_binmode: | |
1c1fc3ea | 4448 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4449 | |
4450 | case KEY_bless: | |
a0d0e21e | 4451 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4452 | |
4453 | case KEY_chop: | |
4454 | UNI(OP_CHOP); | |
4455 | ||
4456 | case KEY_continue: | |
4457 | PREBLOCK(CONTINUE); | |
4458 | ||
4459 | case KEY_chdir: | |
85e6fe83 | 4460 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4461 | UNI(OP_CHDIR); |
4462 | ||
4463 | case KEY_close: | |
4464 | UNI(OP_CLOSE); | |
4465 | ||
4466 | case KEY_closedir: | |
4467 | UNI(OP_CLOSEDIR); | |
4468 | ||
4469 | case KEY_cmp: | |
4470 | Eop(OP_SCMP); | |
4471 | ||
4472 | case KEY_caller: | |
4473 | UNI(OP_CALLER); | |
4474 | ||
4475 | case KEY_crypt: | |
4476 | #ifdef FCRYPT | |
f4c556ac GS |
4477 | if (!PL_cryptseen) { |
4478 | PL_cryptseen = TRUE; | |
de3bb511 | 4479 | init_des(); |
f4c556ac | 4480 | } |
a687059c | 4481 | #endif |
a0d0e21e | 4482 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4483 | |
4484 | case KEY_chmod: | |
a0d0e21e | 4485 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4486 | |
4487 | case KEY_chown: | |
a0d0e21e | 4488 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4489 | |
4490 | case KEY_connect: | |
a0d0e21e | 4491 | LOP(OP_CONNECT,XTERM); |
79072805 | 4492 | |
463ee0b2 LW |
4493 | case KEY_chr: |
4494 | UNI(OP_CHR); | |
4495 | ||
79072805 LW |
4496 | case KEY_cos: |
4497 | UNI(OP_COS); | |
4498 | ||
4499 | case KEY_chroot: | |
4500 | UNI(OP_CHROOT); | |
4501 | ||
4502 | case KEY_do: | |
4503 | s = skipspace(s); | |
4504 | if (*s == '{') | |
a0d0e21e | 4505 | PRETERMBLOCK(DO); |
79072805 | 4506 | if (*s != '\'') |
89c5585f | 4507 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4508 | OPERATOR(DO); |
79072805 LW |
4509 | |
4510 | case KEY_die: | |
3280af22 | 4511 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4512 | LOP(OP_DIE,XTERM); |
79072805 LW |
4513 | |
4514 | case KEY_defined: | |
4515 | UNI(OP_DEFINED); | |
4516 | ||
4517 | case KEY_delete: | |
a0d0e21e | 4518 | UNI(OP_DELETE); |
79072805 LW |
4519 | |
4520 | case KEY_dbmopen: | |
a0d0e21e LW |
4521 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4522 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4523 | |
4524 | case KEY_dbmclose: | |
4525 | UNI(OP_DBMCLOSE); | |
4526 | ||
4527 | case KEY_dump: | |
a0d0e21e | 4528 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4529 | LOOPX(OP_DUMP); |
4530 | ||
4531 | case KEY_else: | |
4532 | PREBLOCK(ELSE); | |
4533 | ||
4534 | case KEY_elsif: | |
57843af0 | 4535 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4536 | OPERATOR(ELSIF); |
4537 | ||
4538 | case KEY_eq: | |
4539 | Eop(OP_SEQ); | |
4540 | ||
a0d0e21e LW |
4541 | case KEY_exists: |
4542 | UNI(OP_EXISTS); | |
4e553d73 | 4543 | |
79072805 LW |
4544 | case KEY_exit: |
4545 | UNI(OP_EXIT); | |
4546 | ||
4547 | case KEY_eval: | |
79072805 | 4548 | s = skipspace(s); |
3280af22 | 4549 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4550 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4551 | |
4552 | case KEY_eof: | |
4553 | UNI(OP_EOF); | |
4554 | ||
c963b151 BD |
4555 | case KEY_err: |
4556 | OPERATOR(DOROP); | |
4557 | ||
79072805 LW |
4558 | case KEY_exp: |
4559 | UNI(OP_EXP); | |
4560 | ||
4561 | case KEY_each: | |
4562 | UNI(OP_EACH); | |
4563 | ||
4564 | case KEY_exec: | |
4565 | set_csh(); | |
a0d0e21e | 4566 | LOP(OP_EXEC,XREF); |
79072805 LW |
4567 | |
4568 | case KEY_endhostent: | |
4569 | FUN0(OP_EHOSTENT); | |
4570 | ||
4571 | case KEY_endnetent: | |
4572 | FUN0(OP_ENETENT); | |
4573 | ||
4574 | case KEY_endservent: | |
4575 | FUN0(OP_ESERVENT); | |
4576 | ||
4577 | case KEY_endprotoent: | |
4578 | FUN0(OP_EPROTOENT); | |
4579 | ||
4580 | case KEY_endpwent: | |
4581 | FUN0(OP_EPWENT); | |
4582 | ||
4583 | case KEY_endgrent: | |
4584 | FUN0(OP_EGRENT); | |
4585 | ||
4586 | case KEY_for: | |
4587 | case KEY_foreach: | |
57843af0 | 4588 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4589 | s = skipspace(s); |
7e2040f0 | 4590 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4591 | char *p = s; |
3280af22 | 4592 | if ((PL_bufend - p) >= 3 && |
55497cff | 4593 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4594 | p += 2; | |
77ca0c92 LW |
4595 | else if ((PL_bufend - p) >= 4 && |
4596 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4597 | p += 3; | |
55497cff | 4598 | p = skipspace(p); |
7e2040f0 | 4599 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4600 | p = scan_ident(p, PL_bufend, |
4601 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4602 | p = skipspace(p); | |
4603 | } | |
4604 | if (*p != '$') | |
cea2e8a9 | 4605 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4606 | } |
79072805 LW |
4607 | OPERATOR(FOR); |
4608 | ||
4609 | case KEY_formline: | |
a0d0e21e | 4610 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4611 | |
4612 | case KEY_fork: | |
4613 | FUN0(OP_FORK); | |
4614 | ||
4615 | case KEY_fcntl: | |
a0d0e21e | 4616 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4617 | |
4618 | case KEY_fileno: | |
4619 | UNI(OP_FILENO); | |
4620 | ||
4621 | case KEY_flock: | |
a0d0e21e | 4622 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4623 | |
4624 | case KEY_gt: | |
4625 | Rop(OP_SGT); | |
4626 | ||
4627 | case KEY_ge: | |
4628 | Rop(OP_SGE); | |
4629 | ||
4630 | case KEY_grep: | |
2c38e13d | 4631 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4632 | |
4633 | case KEY_goto: | |
a0d0e21e | 4634 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4635 | LOOPX(OP_GOTO); |
4636 | ||
4637 | case KEY_gmtime: | |
4638 | UNI(OP_GMTIME); | |
4639 | ||
4640 | case KEY_getc: | |
6f33ba73 | 4641 | UNIDOR(OP_GETC); |
79072805 LW |
4642 | |
4643 | case KEY_getppid: | |
4644 | FUN0(OP_GETPPID); | |
4645 | ||
4646 | case KEY_getpgrp: | |
4647 | UNI(OP_GETPGRP); | |
4648 | ||
4649 | case KEY_getpriority: | |
a0d0e21e | 4650 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4651 | |
4652 | case KEY_getprotobyname: | |
4653 | UNI(OP_GPBYNAME); | |
4654 | ||
4655 | case KEY_getprotobynumber: | |
a0d0e21e | 4656 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4657 | |
4658 | case KEY_getprotoent: | |
4659 | FUN0(OP_GPROTOENT); | |
4660 | ||
4661 | case KEY_getpwent: | |
4662 | FUN0(OP_GPWENT); | |
4663 | ||
4664 | case KEY_getpwnam: | |
ff68c719 | 4665 | UNI(OP_GPWNAM); |
79072805 LW |
4666 | |
4667 | case KEY_getpwuid: | |
ff68c719 | 4668 | UNI(OP_GPWUID); |
79072805 LW |
4669 | |
4670 | case KEY_getpeername: | |
4671 | UNI(OP_GETPEERNAME); | |
4672 | ||
4673 | case KEY_gethostbyname: | |
4674 | UNI(OP_GHBYNAME); | |
4675 | ||
4676 | case KEY_gethostbyaddr: | |
a0d0e21e | 4677 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4678 | |
4679 | case KEY_gethostent: | |
4680 | FUN0(OP_GHOSTENT); | |
4681 | ||
4682 | case KEY_getnetbyname: | |
4683 | UNI(OP_GNBYNAME); | |
4684 | ||
4685 | case KEY_getnetbyaddr: | |
a0d0e21e | 4686 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4687 | |
4688 | case KEY_getnetent: | |
4689 | FUN0(OP_GNETENT); | |
4690 | ||
4691 | case KEY_getservbyname: | |
a0d0e21e | 4692 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4693 | |
4694 | case KEY_getservbyport: | |
a0d0e21e | 4695 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4696 | |
4697 | case KEY_getservent: | |
4698 | FUN0(OP_GSERVENT); | |
4699 | ||
4700 | case KEY_getsockname: | |
4701 | UNI(OP_GETSOCKNAME); | |
4702 | ||
4703 | case KEY_getsockopt: | |
a0d0e21e | 4704 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4705 | |
4706 | case KEY_getgrent: | |
4707 | FUN0(OP_GGRENT); | |
4708 | ||
4709 | case KEY_getgrnam: | |
ff68c719 | 4710 | UNI(OP_GGRNAM); |
79072805 LW |
4711 | |
4712 | case KEY_getgrgid: | |
ff68c719 | 4713 | UNI(OP_GGRGID); |
79072805 LW |
4714 | |
4715 | case KEY_getlogin: | |
4716 | FUN0(OP_GETLOGIN); | |
4717 | ||
93a17b20 | 4718 | case KEY_glob: |
a0d0e21e LW |
4719 | set_csh(); |
4720 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4721 | |
79072805 LW |
4722 | case KEY_hex: |
4723 | UNI(OP_HEX); | |
4724 | ||
4725 | case KEY_if: | |
57843af0 | 4726 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4727 | OPERATOR(IF); |
4728 | ||
4729 | case KEY_index: | |
a0d0e21e | 4730 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4731 | |
4732 | case KEY_int: | |
4733 | UNI(OP_INT); | |
4734 | ||
4735 | case KEY_ioctl: | |
a0d0e21e | 4736 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4737 | |
4738 | case KEY_join: | |
a0d0e21e | 4739 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4740 | |
4741 | case KEY_keys: | |
4742 | UNI(OP_KEYS); | |
4743 | ||
4744 | case KEY_kill: | |
a0d0e21e | 4745 | LOP(OP_KILL,XTERM); |
79072805 LW |
4746 | |
4747 | case KEY_last: | |
a0d0e21e | 4748 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4749 | LOOPX(OP_LAST); |
4e553d73 | 4750 | |
79072805 LW |
4751 | case KEY_lc: |
4752 | UNI(OP_LC); | |
4753 | ||
4754 | case KEY_lcfirst: | |
4755 | UNI(OP_LCFIRST); | |
4756 | ||
4757 | case KEY_local: | |
09bef843 | 4758 | yylval.ival = 0; |
79072805 LW |
4759 | OPERATOR(LOCAL); |
4760 | ||
4761 | case KEY_length: | |
4762 | UNI(OP_LENGTH); | |
4763 | ||
4764 | case KEY_lt: | |
4765 | Rop(OP_SLT); | |
4766 | ||
4767 | case KEY_le: | |
4768 | Rop(OP_SLE); | |
4769 | ||
4770 | case KEY_localtime: | |
4771 | UNI(OP_LOCALTIME); | |
4772 | ||
4773 | case KEY_log: | |
4774 | UNI(OP_LOG); | |
4775 | ||
4776 | case KEY_link: | |
a0d0e21e | 4777 | LOP(OP_LINK,XTERM); |
79072805 LW |
4778 | |
4779 | case KEY_listen: | |
a0d0e21e | 4780 | LOP(OP_LISTEN,XTERM); |
79072805 | 4781 | |
c0329465 MB |
4782 | case KEY_lock: |
4783 | UNI(OP_LOCK); | |
4784 | ||
79072805 LW |
4785 | case KEY_lstat: |
4786 | UNI(OP_LSTAT); | |
4787 | ||
4788 | case KEY_m: | |
8782bef2 | 4789 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4790 | TERM(sublex_start()); |
4791 | ||
a0d0e21e | 4792 | case KEY_map: |
2c38e13d | 4793 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4794 | |
79072805 | 4795 | case KEY_mkdir: |
a0d0e21e | 4796 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4797 | |
4798 | case KEY_msgctl: | |
a0d0e21e | 4799 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4800 | |
4801 | case KEY_msgget: | |
a0d0e21e | 4802 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4803 | |
4804 | case KEY_msgrcv: | |
a0d0e21e | 4805 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4806 | |
4807 | case KEY_msgsnd: | |
a0d0e21e | 4808 | LOP(OP_MSGSND,XTERM); |
79072805 | 4809 | |
77ca0c92 | 4810 | case KEY_our: |
93a17b20 | 4811 | case KEY_my: |
77ca0c92 | 4812 | PL_in_my = tmp; |
c750a3ec | 4813 | s = skipspace(s); |
7e2040f0 | 4814 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4815 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4816 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4817 | goto really_sub; | |
def3634b | 4818 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4819 | if (!PL_in_my_stash) { |
c750a3ec | 4820 | char tmpbuf[1024]; |
3280af22 NIS |
4821 | PL_bufptr = s; |
4822 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4823 | yyerror(tmpbuf); |
4824 | } | |
4825 | } | |
09bef843 | 4826 | yylval.ival = 1; |
55497cff | 4827 | OPERATOR(MY); |
93a17b20 | 4828 | |
79072805 | 4829 | case KEY_next: |
a0d0e21e | 4830 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4831 | LOOPX(OP_NEXT); |
4832 | ||
4833 | case KEY_ne: | |
4834 | Eop(OP_SNE); | |
4835 | ||
a0d0e21e | 4836 | case KEY_no: |
3280af22 | 4837 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4838 | yyerror("\"no\" not allowed in expression"); |
4839 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4840 | s = force_version(s, FALSE); |
a0d0e21e LW |
4841 | yylval.ival = 0; |
4842 | OPERATOR(USE); | |
4843 | ||
4844 | case KEY_not: | |
2d2e263d LW |
4845 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4846 | FUN1(OP_NOT); | |
4847 | else | |
4848 | OPERATOR(NOTOP); | |
a0d0e21e | 4849 | |
79072805 | 4850 | case KEY_open: |
93a17b20 | 4851 | s = skipspace(s); |
7e2040f0 | 4852 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4853 | char *t; |
7e2040f0 | 4854 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
e2ab214b DM |
4855 | for (t=d; *t && isSPACE(*t); t++) ; |
4856 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) | |
66fbe8fb HS |
4857 | /* [perl #16184] */ |
4858 | && !(t[0] == '=' && t[1] == '>') | |
4859 | ) { | |
9014280d | 4860 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 4861 | "Precedence problem: open %.*s should be open(%.*s)", |
66fbe8fb HS |
4862 | d - s, s, d - s, s); |
4863 | } | |
93a17b20 | 4864 | } |
a0d0e21e | 4865 | LOP(OP_OPEN,XTERM); |
79072805 | 4866 | |
463ee0b2 | 4867 | case KEY_or: |
a0d0e21e | 4868 | yylval.ival = OP_OR; |
463ee0b2 LW |
4869 | OPERATOR(OROP); |
4870 | ||
79072805 LW |
4871 | case KEY_ord: |
4872 | UNI(OP_ORD); | |
4873 | ||
4874 | case KEY_oct: | |
4875 | UNI(OP_OCT); | |
4876 | ||
4877 | case KEY_opendir: | |
a0d0e21e | 4878 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4879 | |
4880 | case KEY_print: | |
3280af22 | 4881 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4882 | LOP(OP_PRINT,XREF); |
79072805 LW |
4883 | |
4884 | case KEY_printf: | |
3280af22 | 4885 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4886 | LOP(OP_PRTF,XREF); |
79072805 | 4887 | |
c07a80fd | 4888 | case KEY_prototype: |
4889 | UNI(OP_PROTOTYPE); | |
4890 | ||
79072805 | 4891 | case KEY_push: |
a0d0e21e | 4892 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4893 | |
4894 | case KEY_pop: | |
6f33ba73 | 4895 | UNIDOR(OP_POP); |
79072805 | 4896 | |
a0d0e21e | 4897 | case KEY_pos: |
6f33ba73 | 4898 | UNIDOR(OP_POS); |
4e553d73 | 4899 | |
79072805 | 4900 | case KEY_pack: |
a0d0e21e | 4901 | LOP(OP_PACK,XTERM); |
79072805 LW |
4902 | |
4903 | case KEY_package: | |
a0d0e21e | 4904 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4905 | OPERATOR(PACKAGE); |
4906 | ||
4907 | case KEY_pipe: | |
a0d0e21e | 4908 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4909 | |
4910 | case KEY_q: | |
09bef843 | 4911 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4912 | if (!s) |
85e6fe83 | 4913 | missingterm((char*)0); |
79072805 LW |
4914 | yylval.ival = OP_CONST; |
4915 | TERM(sublex_start()); | |
4916 | ||
a0d0e21e LW |
4917 | case KEY_quotemeta: |
4918 | UNI(OP_QUOTEMETA); | |
4919 | ||
8990e307 | 4920 | case KEY_qw: |
09bef843 | 4921 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4922 | if (!s) |
85e6fe83 | 4923 | missingterm((char*)0); |
8127e0e3 GS |
4924 | force_next(')'); |
4925 | if (SvCUR(PL_lex_stuff)) { | |
4926 | OP *words = Nullop; | |
4927 | int warned = 0; | |
3280af22 | 4928 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4929 | while (len) { |
7948272d | 4930 | SV *sv; |
8127e0e3 GS |
4931 | for (; isSPACE(*d) && len; --len, ++d) ; |
4932 | if (len) { | |
4933 | char *b = d; | |
e476b1b5 | 4934 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4935 | for (; !isSPACE(*d) && len; --len, ++d) { |
4936 | if (*d == ',') { | |
9014280d | 4937 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4938 | "Possible attempt to separate words with commas"); |
4939 | ++warned; | |
4940 | } | |
4941 | else if (*d == '#') { | |
9014280d | 4942 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4943 | "Possible attempt to put comments in qw() list"); |
4944 | ++warned; | |
4945 | } | |
4946 | } | |
4947 | } | |
4948 | else { | |
4949 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4950 | } | |
7948272d NIS |
4951 | sv = newSVpvn(b, d-b); |
4952 | if (DO_UTF8(PL_lex_stuff)) | |
4953 | SvUTF8_on(sv); | |
8127e0e3 | 4954 | words = append_elem(OP_LIST, words, |
7948272d | 4955 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4956 | } |
4957 | } | |
8127e0e3 GS |
4958 | if (words) { |
4959 | PL_nextval[PL_nexttoke].opval = words; | |
4960 | force_next(THING); | |
4961 | } | |
55497cff | 4962 | } |
37fd879b | 4963 | if (PL_lex_stuff) { |
8127e0e3 | 4964 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4965 | PL_lex_stuff = Nullsv; |
4966 | } | |
3280af22 | 4967 | PL_expect = XTERM; |
8127e0e3 | 4968 | TOKEN('('); |
8990e307 | 4969 | |
79072805 | 4970 | case KEY_qq: |
09bef843 | 4971 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4972 | if (!s) |
85e6fe83 | 4973 | missingterm((char*)0); |
a0d0e21e | 4974 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4975 | if (SvIVX(PL_lex_stuff) == '\'') |
4976 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4977 | TERM(sublex_start()); |
4978 | ||
8782bef2 GB |
4979 | case KEY_qr: |
4980 | s = scan_pat(s,OP_QR); | |
4981 | TERM(sublex_start()); | |
4982 | ||
79072805 | 4983 | case KEY_qx: |
09bef843 | 4984 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4985 | if (!s) |
85e6fe83 | 4986 | missingterm((char*)0); |
79072805 LW |
4987 | yylval.ival = OP_BACKTICK; |
4988 | set_csh(); | |
4989 | TERM(sublex_start()); | |
4990 | ||
4991 | case KEY_return: | |
4992 | OLDLOP(OP_RETURN); | |
4993 | ||
4994 | case KEY_require: | |
a7cb1f99 | 4995 | s = skipspace(s); |
e759cc13 RGS |
4996 | if (isDIGIT(*s)) { |
4997 | s = force_version(s, FALSE); | |
a7cb1f99 | 4998 | } |
e759cc13 RGS |
4999 | else if (*s != 'v' || !isDIGIT(s[1]) |
5000 | || (s = force_version(s, TRUE), *s == 'v')) | |
5001 | { | |
a7cb1f99 GS |
5002 | *PL_tokenbuf = '\0'; |
5003 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 5004 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
5005 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
5006 | else if (*s == '<') | |
5007 | yyerror("<> should be quotes"); | |
5008 | } | |
463ee0b2 | 5009 | UNI(OP_REQUIRE); |
79072805 LW |
5010 | |
5011 | case KEY_reset: | |
5012 | UNI(OP_RESET); | |
5013 | ||
5014 | case KEY_redo: | |
a0d0e21e | 5015 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
5016 | LOOPX(OP_REDO); |
5017 | ||
5018 | case KEY_rename: | |
a0d0e21e | 5019 | LOP(OP_RENAME,XTERM); |
79072805 LW |
5020 | |
5021 | case KEY_rand: | |
5022 | UNI(OP_RAND); | |
5023 | ||
5024 | case KEY_rmdir: | |
5025 | UNI(OP_RMDIR); | |
5026 | ||
5027 | case KEY_rindex: | |
a0d0e21e | 5028 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
5029 | |
5030 | case KEY_read: | |
a0d0e21e | 5031 | LOP(OP_READ,XTERM); |
79072805 LW |
5032 | |
5033 | case KEY_readdir: | |
5034 | UNI(OP_READDIR); | |
5035 | ||
93a17b20 LW |
5036 | case KEY_readline: |
5037 | set_csh(); | |
6f33ba73 | 5038 | UNIDOR(OP_READLINE); |
93a17b20 LW |
5039 | |
5040 | case KEY_readpipe: | |
5041 | set_csh(); | |
5042 | UNI(OP_BACKTICK); | |
5043 | ||
79072805 LW |
5044 | case KEY_rewinddir: |
5045 | UNI(OP_REWINDDIR); | |
5046 | ||
5047 | case KEY_recv: | |
a0d0e21e | 5048 | LOP(OP_RECV,XTERM); |
79072805 LW |
5049 | |
5050 | case KEY_reverse: | |
a0d0e21e | 5051 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
5052 | |
5053 | case KEY_readlink: | |
6f33ba73 | 5054 | UNIDOR(OP_READLINK); |
79072805 LW |
5055 | |
5056 | case KEY_ref: | |
5057 | UNI(OP_REF); | |
5058 | ||
5059 | case KEY_s: | |
5060 | s = scan_subst(s); | |
5061 | if (yylval.opval) | |
5062 | TERM(sublex_start()); | |
5063 | else | |
5064 | TOKEN(1); /* force error */ | |
5065 | ||
a0d0e21e LW |
5066 | case KEY_chomp: |
5067 | UNI(OP_CHOMP); | |
4e553d73 | 5068 | |
79072805 LW |
5069 | case KEY_scalar: |
5070 | UNI(OP_SCALAR); | |
5071 | ||
5072 | case KEY_select: | |
a0d0e21e | 5073 | LOP(OP_SELECT,XTERM); |
79072805 LW |
5074 | |
5075 | case KEY_seek: | |
a0d0e21e | 5076 | LOP(OP_SEEK,XTERM); |
79072805 LW |
5077 | |
5078 | case KEY_semctl: | |
a0d0e21e | 5079 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
5080 | |
5081 | case KEY_semget: | |
a0d0e21e | 5082 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
5083 | |
5084 | case KEY_semop: | |
a0d0e21e | 5085 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
5086 | |
5087 | case KEY_send: | |
a0d0e21e | 5088 | LOP(OP_SEND,XTERM); |
79072805 LW |
5089 | |
5090 | case KEY_setpgrp: | |
a0d0e21e | 5091 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
5092 | |
5093 | case KEY_setpriority: | |
a0d0e21e | 5094 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
5095 | |
5096 | case KEY_sethostent: | |
ff68c719 | 5097 | UNI(OP_SHOSTENT); |
79072805 LW |
5098 | |
5099 | case KEY_setnetent: | |
ff68c719 | 5100 | UNI(OP_SNETENT); |
79072805 LW |
5101 | |
5102 | case KEY_setservent: | |
ff68c719 | 5103 | UNI(OP_SSERVENT); |
79072805 LW |
5104 | |
5105 | case KEY_setprotoent: | |
ff68c719 | 5106 | UNI(OP_SPROTOENT); |
79072805 LW |
5107 | |
5108 | case KEY_setpwent: | |
5109 | FUN0(OP_SPWENT); | |
5110 | ||
5111 | case KEY_setgrent: | |
5112 | FUN0(OP_SGRENT); | |
5113 | ||
5114 | case KEY_seekdir: | |
a0d0e21e | 5115 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
5116 | |
5117 | case KEY_setsockopt: | |
a0d0e21e | 5118 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
5119 | |
5120 | case KEY_shift: | |
6f33ba73 | 5121 | UNIDOR(OP_SHIFT); |
79072805 LW |
5122 | |
5123 | case KEY_shmctl: | |
a0d0e21e | 5124 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
5125 | |
5126 | case KEY_shmget: | |
a0d0e21e | 5127 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
5128 | |
5129 | case KEY_shmread: | |
a0d0e21e | 5130 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
5131 | |
5132 | case KEY_shmwrite: | |
a0d0e21e | 5133 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
5134 | |
5135 | case KEY_shutdown: | |
a0d0e21e | 5136 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
5137 | |
5138 | case KEY_sin: | |
5139 | UNI(OP_SIN); | |
5140 | ||
5141 | case KEY_sleep: | |
5142 | UNI(OP_SLEEP); | |
5143 | ||
5144 | case KEY_socket: | |
a0d0e21e | 5145 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
5146 | |
5147 | case KEY_socketpair: | |
a0d0e21e | 5148 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
5149 | |
5150 | case KEY_sort: | |
3280af22 | 5151 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
5152 | s = skipspace(s); |
5153 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 5154 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 5155 | PL_expect = XTERM; |
15f0808c | 5156 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 5157 | LOP(OP_SORT,XREF); |
79072805 LW |
5158 | |
5159 | case KEY_split: | |
a0d0e21e | 5160 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
5161 | |
5162 | case KEY_sprintf: | |
a0d0e21e | 5163 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
5164 | |
5165 | case KEY_splice: | |
a0d0e21e | 5166 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
5167 | |
5168 | case KEY_sqrt: | |
5169 | UNI(OP_SQRT); | |
5170 | ||
5171 | case KEY_srand: | |
5172 | UNI(OP_SRAND); | |
5173 | ||
5174 | case KEY_stat: | |
5175 | UNI(OP_STAT); | |
5176 | ||
5177 | case KEY_study: | |
79072805 LW |
5178 | UNI(OP_STUDY); |
5179 | ||
5180 | case KEY_substr: | |
a0d0e21e | 5181 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
5182 | |
5183 | case KEY_format: | |
5184 | case KEY_sub: | |
93a17b20 | 5185 | really_sub: |
09bef843 | 5186 | { |
3280af22 | 5187 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 5188 | SSize_t tboffset = 0; |
09bef843 | 5189 | expectation attrful; |
d731386a | 5190 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
5191 | int key = tmp; |
5192 | ||
5193 | s = skipspace(s); | |
5194 | ||
7e2040f0 | 5195 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
5196 | (*s == ':' && s[1] == ':')) |
5197 | { | |
5198 | PL_expect = XBLOCK; | |
5199 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
5200 | /* remember buffer pos'n for later force_word */ |
5201 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
5202 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5203 | if (strchr(tmpbuf, ':')) | |
5204 | sv_setpv(PL_subname, tmpbuf); | |
5205 | else { | |
5206 | sv_setsv(PL_subname,PL_curstname); | |
5207 | sv_catpvn(PL_subname,"::",2); | |
5208 | sv_catpvn(PL_subname,tmpbuf,len); | |
5209 | } | |
5210 | s = skipspace(d); | |
5211 | have_name = TRUE; | |
5212 | } | |
463ee0b2 | 5213 | else { |
09bef843 SB |
5214 | if (key == KEY_my) |
5215 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5216 | PL_expect = XTERMBLOCK; | |
5217 | attrful = XATTRTERM; | |
5218 | sv_setpv(PL_subname,"?"); | |
5219 | have_name = FALSE; | |
463ee0b2 | 5220 | } |
4633a7c4 | 5221 | |
09bef843 SB |
5222 | if (key == KEY_format) { |
5223 | if (*s == '=') | |
5224 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5225 | if (have_name) | |
b1b65b59 JH |
5226 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5227 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5228 | OPERATOR(FORMAT); |
5229 | } | |
79072805 | 5230 | |
09bef843 SB |
5231 | /* Look for a prototype */ |
5232 | if (*s == '(') { | |
5233 | char *p; | |
5234 | ||
5235 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5236 | if (!s) |
09bef843 | 5237 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5238 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5239 | d = SvPVX(PL_lex_stuff); |
5240 | tmp = 0; | |
d731386a | 5241 | bad_proto = FALSE; |
09bef843 | 5242 | for (p = d; *p; ++p) { |
d37a9538 | 5243 | if (!isSPACE(*p)) { |
09bef843 | 5244 | d[tmp++] = *p; |
d37a9538 ST |
5245 | if (!strchr("$@%*;[]&\\", *p)) |
5246 | bad_proto = TRUE; | |
5247 | } | |
09bef843 SB |
5248 | } |
5249 | d[tmp] = '\0'; | |
420cdfc1 | 5250 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5251 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
5252 | "Illegal character in prototype for %"SVf" : %s", |
5253 | PL_subname, d); | |
09bef843 SB |
5254 | SvCUR(PL_lex_stuff) = tmp; |
5255 | have_proto = TRUE; | |
68dc0745 | 5256 | |
09bef843 | 5257 | s = skipspace(s); |
4633a7c4 | 5258 | } |
09bef843 SB |
5259 | else |
5260 | have_proto = FALSE; | |
5261 | ||
5262 | if (*s == ':' && s[1] != ':') | |
5263 | PL_expect = attrful; | |
8e742a20 MHM |
5264 | else if (*s != '{' && key == KEY_sub) { |
5265 | if (!have_name) | |
5266 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
5267 | else if (*s != ';') | |
5268 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, PL_subname); | |
5269 | } | |
09bef843 SB |
5270 | |
5271 | if (have_proto) { | |
b1b65b59 JH |
5272 | PL_nextval[PL_nexttoke].opval = |
5273 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5274 | PL_lex_stuff = Nullsv; |
5275 | force_next(THING); | |
68dc0745 | 5276 | } |
09bef843 | 5277 | if (!have_name) { |
c99da370 JH |
5278 | sv_setpv(PL_subname, |
5279 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5280 | TOKEN(ANONSUB); |
4633a7c4 | 5281 | } |
b1b65b59 JH |
5282 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5283 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5284 | if (key == KEY_my) |
5285 | TOKEN(MYSUB); | |
5286 | TOKEN(SUB); | |
4633a7c4 | 5287 | } |
79072805 LW |
5288 | |
5289 | case KEY_system: | |
5290 | set_csh(); | |
a0d0e21e | 5291 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5292 | |
5293 | case KEY_symlink: | |
a0d0e21e | 5294 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5295 | |
5296 | case KEY_syscall: | |
a0d0e21e | 5297 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5298 | |
c07a80fd | 5299 | case KEY_sysopen: |
5300 | LOP(OP_SYSOPEN,XTERM); | |
5301 | ||
137443ea | 5302 | case KEY_sysseek: |
5303 | LOP(OP_SYSSEEK,XTERM); | |
5304 | ||
79072805 | 5305 | case KEY_sysread: |
a0d0e21e | 5306 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5307 | |
5308 | case KEY_syswrite: | |
a0d0e21e | 5309 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5310 | |
5311 | case KEY_tr: | |
5312 | s = scan_trans(s); | |
5313 | TERM(sublex_start()); | |
5314 | ||
5315 | case KEY_tell: | |
5316 | UNI(OP_TELL); | |
5317 | ||
5318 | case KEY_telldir: | |
5319 | UNI(OP_TELLDIR); | |
5320 | ||
463ee0b2 | 5321 | case KEY_tie: |
a0d0e21e | 5322 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5323 | |
c07a80fd | 5324 | case KEY_tied: |
5325 | UNI(OP_TIED); | |
5326 | ||
79072805 LW |
5327 | case KEY_time: |
5328 | FUN0(OP_TIME); | |
5329 | ||
5330 | case KEY_times: | |
5331 | FUN0(OP_TMS); | |
5332 | ||
5333 | case KEY_truncate: | |
a0d0e21e | 5334 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5335 | |
5336 | case KEY_uc: | |
5337 | UNI(OP_UC); | |
5338 | ||
5339 | case KEY_ucfirst: | |
5340 | UNI(OP_UCFIRST); | |
5341 | ||
463ee0b2 LW |
5342 | case KEY_untie: |
5343 | UNI(OP_UNTIE); | |
5344 | ||
79072805 | 5345 | case KEY_until: |
57843af0 | 5346 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5347 | OPERATOR(UNTIL); |
5348 | ||
5349 | case KEY_unless: | |
57843af0 | 5350 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5351 | OPERATOR(UNLESS); |
5352 | ||
5353 | case KEY_unlink: | |
a0d0e21e | 5354 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5355 | |
5356 | case KEY_undef: | |
6f33ba73 | 5357 | UNIDOR(OP_UNDEF); |
79072805 LW |
5358 | |
5359 | case KEY_unpack: | |
a0d0e21e | 5360 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5361 | |
5362 | case KEY_utime: | |
a0d0e21e | 5363 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5364 | |
5365 | case KEY_umask: | |
6f33ba73 | 5366 | UNIDOR(OP_UMASK); |
79072805 LW |
5367 | |
5368 | case KEY_unshift: | |
a0d0e21e LW |
5369 | LOP(OP_UNSHIFT,XTERM); |
5370 | ||
5371 | case KEY_use: | |
3280af22 | 5372 | if (PL_expect != XSTATE) |
a0d0e21e | 5373 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5374 | s = skipspace(s); |
a7cb1f99 | 5375 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5376 | s = force_version(s, TRUE); |
a7cb1f99 | 5377 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5378 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5379 | force_next(WORD); |
5380 | } | |
e759cc13 RGS |
5381 | else if (*s == 'v') { |
5382 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5383 | s = force_version(s, FALSE); | |
5384 | } | |
89bfa8cd | 5385 | } |
5386 | else { | |
5387 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5388 | s = force_version(s, FALSE); |
89bfa8cd | 5389 | } |
a0d0e21e LW |
5390 | yylval.ival = 1; |
5391 | OPERATOR(USE); | |
79072805 LW |
5392 | |
5393 | case KEY_values: | |
5394 | UNI(OP_VALUES); | |
5395 | ||
5396 | case KEY_vec: | |
a0d0e21e | 5397 | LOP(OP_VEC,XTERM); |
79072805 LW |
5398 | |
5399 | case KEY_while: | |
57843af0 | 5400 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5401 | OPERATOR(WHILE); |
5402 | ||
5403 | case KEY_warn: | |
3280af22 | 5404 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5405 | LOP(OP_WARN,XTERM); |
79072805 LW |
5406 | |
5407 | case KEY_wait: | |
5408 | FUN0(OP_WAIT); | |
5409 | ||
5410 | case KEY_waitpid: | |
a0d0e21e | 5411 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5412 | |
5413 | case KEY_wantarray: | |
5414 | FUN0(OP_WANTARRAY); | |
5415 | ||
5416 | case KEY_write: | |
9d116dd7 JH |
5417 | #ifdef EBCDIC |
5418 | { | |
df3728a2 JH |
5419 | char ctl_l[2]; |
5420 | ctl_l[0] = toCTRL('L'); | |
5421 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5422 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5423 | } | |
5424 | #else | |
5425 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5426 | #endif | |
79072805 LW |
5427 | UNI(OP_ENTERWRITE); |
5428 | ||
5429 | case KEY_x: | |
3280af22 | 5430 | if (PL_expect == XOPERATOR) |
79072805 LW |
5431 | Mop(OP_REPEAT); |
5432 | check_uni(); | |
5433 | goto just_a_word; | |
5434 | ||
a0d0e21e LW |
5435 | case KEY_xor: |
5436 | yylval.ival = OP_XOR; | |
5437 | OPERATOR(OROP); | |
5438 | ||
79072805 LW |
5439 | case KEY_y: |
5440 | s = scan_trans(s); | |
5441 | TERM(sublex_start()); | |
5442 | } | |
49dc05e3 | 5443 | }} |
79072805 | 5444 | } |
bf4acbe4 GS |
5445 | #ifdef __SC__ |
5446 | #pragma segment Main | |
5447 | #endif | |
79072805 | 5448 | |
e930465f JH |
5449 | static int |
5450 | S_pending_ident(pTHX) | |
8eceec63 SC |
5451 | { |
5452 | register char *d; | |
a55b55d8 | 5453 | register I32 tmp = 0; |
8eceec63 SC |
5454 | /* pit holds the identifier we read and pending_ident is reset */ |
5455 | char pit = PL_pending_ident; | |
5456 | PL_pending_ident = 0; | |
5457 | ||
5458 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5459 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5460 | ||
5461 | /* if we're in a my(), we can't allow dynamics here. | |
5462 | $foo'bar has already been turned into $foo::bar, so | |
5463 | just check for colons. | |
5464 | ||
5465 | if it's a legal name, the OP is a PADANY. | |
5466 | */ | |
5467 | if (PL_in_my) { | |
5468 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5469 | if (strchr(PL_tokenbuf,':')) | |
5470 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5471 | "variable %s in \"our\"", | |
5472 | PL_tokenbuf)); | |
dd2155a4 | 5473 | tmp = allocmy(PL_tokenbuf); |
8eceec63 SC |
5474 | } |
5475 | else { | |
5476 | if (strchr(PL_tokenbuf,':')) | |
5477 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5478 | ||
5479 | yylval.opval = newOP(OP_PADANY, 0); | |
dd2155a4 | 5480 | yylval.opval->op_targ = allocmy(PL_tokenbuf); |
8eceec63 SC |
5481 | return PRIVATEREF; |
5482 | } | |
5483 | } | |
5484 | ||
5485 | /* | |
5486 | build the ops for accesses to a my() variable. | |
5487 | ||
5488 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5489 | then used in a comparison. This catches most, but not | |
5490 | all cases. For instance, it catches | |
5491 | sort { my($a); $a <=> $b } | |
5492 | but not | |
5493 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5494 | (although why you'd do that is anyone's guess). | |
5495 | */ | |
5496 | ||
5497 | if (!strchr(PL_tokenbuf,':')) { | |
8716503d DM |
5498 | if (!PL_in_my) |
5499 | tmp = pad_findmy(PL_tokenbuf); | |
5500 | if (tmp != NOT_IN_PAD) { | |
8eceec63 | 5501 | /* might be an "our" variable" */ |
dd2155a4 | 5502 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
8eceec63 | 5503 | /* build ops for a bareword */ |
dd2155a4 | 5504 | SV *sym = newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)), 0); |
8eceec63 SC |
5505 | sv_catpvn(sym, "::", 2); |
5506 | sv_catpv(sym, PL_tokenbuf+1); | |
5507 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5508 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5509 | gv_fetchpv(SvPVX(sym), | |
5510 | (PL_in_eval | |
5511 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5512 | : GV_ADDMULTI |
8eceec63 SC |
5513 | ), |
5514 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5515 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5516 | : SVt_PVHV)); | |
5517 | return WORD; | |
5518 | } | |
5519 | ||
5520 | /* if it's a sort block and they're naming $a or $b */ | |
5521 | if (PL_last_lop_op == OP_SORT && | |
5522 | PL_tokenbuf[0] == '$' && | |
5523 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5524 | && !PL_tokenbuf[2]) | |
5525 | { | |
5526 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5527 | d < PL_bufend && *d != '\n'; | |
5528 | d++) | |
5529 | { | |
5530 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5531 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5532 | PL_tokenbuf); | |
5533 | } | |
5534 | } | |
5535 | } | |
5536 | ||
5537 | yylval.opval = newOP(OP_PADANY, 0); | |
5538 | yylval.opval->op_targ = tmp; | |
5539 | return PRIVATEREF; | |
5540 | } | |
5541 | } | |
5542 | ||
5543 | /* | |
5544 | Whine if they've said @foo in a doublequoted string, | |
5545 | and @foo isn't a variable we can find in the symbol | |
5546 | table. | |
5547 | */ | |
5548 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5549 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5550 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5551 | && ckWARN(WARN_AMBIGUOUS)) | |
5552 | { | |
5553 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5554 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5555 | "Possible unintended interpolation of %s in string", |
5556 | PL_tokenbuf); | |
5557 | } | |
5558 | } | |
5559 | ||
5560 | /* build ops for a bareword */ | |
5561 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5562 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5563 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5564 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5565 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5566 | : SVt_PVHV)); | |
5567 | return WORD; | |
5568 | } | |
5569 | ||
79072805 | 5570 | I32 |
864dbfa3 | 5571 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5572 | { |
5573 | switch (*d) { | |
5574 | case '_': | |
5575 | if (d[1] == '_') { | |
a0d0e21e | 5576 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5577 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5578 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5579 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5580 | if (strEQ(d,"__END__")) return KEY___END__; |
5581 | } | |
5582 | break; | |
8990e307 LW |
5583 | case 'A': |
5584 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5585 | break; | |
79072805 | 5586 | case 'a': |
463ee0b2 LW |
5587 | switch (len) { |
5588 | case 3: | |
a0d0e21e LW |
5589 | if (strEQ(d,"and")) return -KEY_and; |
5590 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5591 | break; |
463ee0b2 | 5592 | case 5: |
a0d0e21e LW |
5593 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5594 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5595 | break; |
5596 | case 6: | |
a0d0e21e | 5597 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5598 | break; |
5599 | } | |
79072805 LW |
5600 | break; |
5601 | case 'B': | |
5602 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5603 | break; |
79072805 | 5604 | case 'b': |
a0d0e21e LW |
5605 | if (strEQ(d,"bless")) return -KEY_bless; |
5606 | if (strEQ(d,"bind")) return -KEY_bind; | |
5607 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5608 | break; | |
5609 | case 'C': | |
5610 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5611 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5612 | break; |
5613 | case 'c': | |
5614 | switch (len) { | |
5615 | case 3: | |
a0d0e21e LW |
5616 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5617 | if (strEQ(d,"chr")) return -KEY_chr; | |
5618 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5619 | break; |
5620 | case 4: | |
77bc9082 | 5621 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5622 | break; |
5623 | case 5: | |
a0d0e21e LW |
5624 | if (strEQ(d,"close")) return -KEY_close; |
5625 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5626 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5627 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5628 | if (strEQ(d,"chown")) return -KEY_chown; | |
5629 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5630 | break; |
5631 | case 6: | |
a0d0e21e LW |
5632 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5633 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5634 | break; |
5635 | case 7: | |
a0d0e21e | 5636 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5637 | break; |
5638 | case 8: | |
a0d0e21e LW |
5639 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5640 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5641 | break; |
5642 | } | |
5643 | break; | |
ed6116ce LW |
5644 | case 'D': |
5645 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5646 | break; | |
79072805 LW |
5647 | case 'd': |
5648 | switch (len) { | |
5649 | case 2: | |
5650 | if (strEQ(d,"do")) return KEY_do; | |
5651 | break; | |
5652 | case 3: | |
a0d0e21e | 5653 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5654 | break; |
5655 | case 4: | |
a0d0e21e | 5656 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5657 | break; |
5658 | case 6: | |
5659 | if (strEQ(d,"delete")) return KEY_delete; | |
5660 | break; | |
5661 | case 7: | |
5662 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5663 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5664 | break; |
5665 | case 8: | |
a0d0e21e | 5666 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5667 | break; |
5668 | } | |
5669 | break; | |
5670 | case 'E': | |
79072805 LW |
5671 | if (strEQ(d,"END")) return KEY_END; |
5672 | break; | |
5673 | case 'e': | |
5674 | switch (len) { | |
5675 | case 2: | |
a0d0e21e | 5676 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5677 | break; |
5678 | case 3: | |
a0d0e21e | 5679 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5680 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5681 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5682 | break; |
5683 | case 4: | |
5684 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5685 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5686 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5687 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5688 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5689 | break; |
5690 | case 5: | |
5691 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5692 | break; | |
a0d0e21e LW |
5693 | case 6: |
5694 | if (strEQ(d,"exists")) return KEY_exists; | |
56da5a46 RGS |
5695 | if (strEQ(d,"elseif") && ckWARN_d(WARN_SYNTAX)) |
5696 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5697 | "elseif should be elsif"); | |
a0d0e21e | 5698 | break; |
79072805 | 5699 | case 8: |
a0d0e21e LW |
5700 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5701 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5702 | break; |
5703 | case 9: | |
a0d0e21e | 5704 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5705 | break; |
5706 | case 10: | |
a0d0e21e LW |
5707 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5708 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5709 | break; |
5710 | case 11: | |
a0d0e21e | 5711 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5712 | break; |
a687059c | 5713 | } |
a687059c | 5714 | break; |
79072805 LW |
5715 | case 'f': |
5716 | switch (len) { | |
5717 | case 3: | |
5718 | if (strEQ(d,"for")) return KEY_for; | |
5719 | break; | |
5720 | case 4: | |
a0d0e21e | 5721 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5722 | break; |
5723 | case 5: | |
a0d0e21e LW |
5724 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5725 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5726 | break; |
5727 | case 6: | |
5728 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5729 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5730 | break; |
5731 | case 7: | |
5732 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5733 | break; | |
5734 | case 8: | |
a0d0e21e | 5735 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5736 | break; |
378cc40b | 5737 | } |
a687059c | 5738 | break; |
79072805 | 5739 | case 'g': |
a687059c LW |
5740 | if (strnEQ(d,"get",3)) { |
5741 | d += 3; | |
5742 | if (*d == 'p') { | |
79072805 LW |
5743 | switch (len) { |
5744 | case 7: | |
a0d0e21e LW |
5745 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5746 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5747 | break; |
5748 | case 8: | |
a0d0e21e LW |
5749 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5750 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5751 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5752 | break; |
5753 | case 11: | |
a0d0e21e LW |
5754 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5755 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5756 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5757 | break; |
5758 | case 14: | |
a0d0e21e | 5759 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5760 | break; |
5761 | case 16: | |
a0d0e21e | 5762 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5763 | break; |
5764 | } | |
a687059c LW |
5765 | } |
5766 | else if (*d == 'h') { | |
a0d0e21e LW |
5767 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5768 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5769 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5770 | } |
5771 | else if (*d == 'n') { | |
a0d0e21e LW |
5772 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5773 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5774 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5775 | } |
5776 | else if (*d == 's') { | |
a0d0e21e LW |
5777 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5778 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5779 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5780 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5781 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5782 | } |
5783 | else if (*d == 'g') { | |
a0d0e21e LW |
5784 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5785 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5786 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5787 | } |
5788 | else if (*d == 'l') { | |
a0d0e21e | 5789 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5790 | } |
a0d0e21e | 5791 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5792 | break; |
a687059c | 5793 | } |
79072805 LW |
5794 | switch (len) { |
5795 | case 2: | |
a0d0e21e LW |
5796 | if (strEQ(d,"gt")) return -KEY_gt; |
5797 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5798 | break; |
5799 | case 4: | |
5800 | if (strEQ(d,"grep")) return KEY_grep; | |
5801 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5802 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5803 | break; |
5804 | case 6: | |
a0d0e21e | 5805 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5806 | break; |
378cc40b | 5807 | } |
a687059c | 5808 | break; |
79072805 | 5809 | case 'h': |
a0d0e21e | 5810 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5811 | break; |
7d07dbc2 MB |
5812 | case 'I': |
5813 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5814 | break; | |
79072805 LW |
5815 | case 'i': |
5816 | switch (len) { | |
5817 | case 2: | |
5818 | if (strEQ(d,"if")) return KEY_if; | |
5819 | break; | |
5820 | case 3: | |
a0d0e21e | 5821 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5822 | break; |
5823 | case 5: | |
a0d0e21e LW |
5824 | if (strEQ(d,"index")) return -KEY_index; |
5825 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5826 | break; |
5827 | } | |
a687059c | 5828 | break; |
79072805 | 5829 | case 'j': |
a0d0e21e | 5830 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5831 | break; |
79072805 LW |
5832 | case 'k': |
5833 | if (len == 4) { | |
3a6a8333 | 5834 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5835 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5836 | } |
79072805 | 5837 | break; |
79072805 LW |
5838 | case 'l': |
5839 | switch (len) { | |
5840 | case 2: | |
a0d0e21e LW |
5841 | if (strEQ(d,"lt")) return -KEY_lt; |
5842 | if (strEQ(d,"le")) return -KEY_le; | |
5843 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5844 | break; |
5845 | case 3: | |
a0d0e21e | 5846 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5847 | break; |
5848 | case 4: | |
5849 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5850 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5851 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5852 | break; |
79072805 LW |
5853 | case 5: |
5854 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5855 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5856 | break; |
5857 | case 6: | |
a0d0e21e LW |
5858 | if (strEQ(d,"length")) return -KEY_length; |
5859 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5860 | break; |
5861 | case 7: | |
a0d0e21e | 5862 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5863 | break; |
5864 | case 9: | |
a0d0e21e | 5865 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5866 | break; |
5867 | } | |
a687059c | 5868 | break; |
79072805 LW |
5869 | case 'm': |
5870 | switch (len) { | |
5871 | case 1: return KEY_m; | |
93a17b20 LW |
5872 | case 2: |
5873 | if (strEQ(d,"my")) return KEY_my; | |
5874 | break; | |
a0d0e21e LW |
5875 | case 3: |
5876 | if (strEQ(d,"map")) return KEY_map; | |
5877 | break; | |
79072805 | 5878 | case 5: |
a0d0e21e | 5879 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5880 | break; |
5881 | case 6: | |
a0d0e21e LW |
5882 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5883 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5884 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5885 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5886 | break; |
5887 | } | |
a687059c | 5888 | break; |
79072805 LW |
5889 | case 'n': |
5890 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5891 | if (strEQ(d,"ne")) return -KEY_ne; |
5892 | if (strEQ(d,"not")) return -KEY_not; | |
5893 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5894 | break; |
79072805 LW |
5895 | case 'o': |
5896 | switch (len) { | |
463ee0b2 | 5897 | case 2: |
a0d0e21e | 5898 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5899 | break; |
79072805 | 5900 | case 3: |
a0d0e21e LW |
5901 | if (strEQ(d,"ord")) return -KEY_ord; |
5902 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5903 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5904 | break; |
5905 | case 4: | |
a0d0e21e | 5906 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5907 | break; |
5908 | case 7: | |
a0d0e21e | 5909 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5910 | break; |
fe14fcc3 | 5911 | } |
a687059c | 5912 | break; |
79072805 LW |
5913 | case 'p': |
5914 | switch (len) { | |
5915 | case 3: | |
4e553d73 | 5916 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5917 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5918 | break; |
5919 | case 4: | |
3a6a8333 | 5920 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5921 | if (strEQ(d,"pack")) return -KEY_pack; |
5922 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5923 | break; |
5924 | case 5: | |
5925 | if (strEQ(d,"print")) return KEY_print; | |
5926 | break; | |
5927 | case 6: | |
5928 | if (strEQ(d,"printf")) return KEY_printf; | |
5929 | break; | |
5930 | case 7: | |
5931 | if (strEQ(d,"package")) return KEY_package; | |
5932 | break; | |
c07a80fd | 5933 | case 9: |
5934 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5935 | } |
79072805 LW |
5936 | break; |
5937 | case 'q': | |
5938 | if (len <= 2) { | |
5939 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5940 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5941 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5942 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5943 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5944 | } |
a0d0e21e | 5945 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5946 | break; |
5947 | case 'r': | |
5948 | switch (len) { | |
5949 | case 3: | |
a0d0e21e | 5950 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5951 | break; |
5952 | case 4: | |
a0d0e21e LW |
5953 | if (strEQ(d,"read")) return -KEY_read; |
5954 | if (strEQ(d,"rand")) return -KEY_rand; | |
5955 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5956 | if (strEQ(d,"redo")) return KEY_redo; |
5957 | break; | |
5958 | case 5: | |
a0d0e21e LW |
5959 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5960 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5961 | break; |
5962 | case 6: | |
5963 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5964 | if (strEQ(d,"rename")) return -KEY_rename; |
5965 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5966 | break; |
5967 | case 7: | |
ec4ab249 | 5968 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5969 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5970 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5971 | break; |
5972 | case 8: | |
a0d0e21e LW |
5973 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5974 | if (strEQ(d,"readline")) return -KEY_readline; | |
5975 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5976 | break; |
5977 | case 9: | |
a0d0e21e | 5978 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5979 | break; |
a687059c | 5980 | } |
79072805 LW |
5981 | break; |
5982 | case 's': | |
a687059c | 5983 | switch (d[1]) { |
79072805 | 5984 | case 0: return KEY_s; |
a687059c | 5985 | case 'c': |
79072805 | 5986 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5987 | break; |
5988 | case 'e': | |
79072805 LW |
5989 | switch (len) { |
5990 | case 4: | |
a0d0e21e LW |
5991 | if (strEQ(d,"seek")) return -KEY_seek; |
5992 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5993 | break; |
5994 | case 5: | |
a0d0e21e | 5995 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5996 | break; |
5997 | case 6: | |
a0d0e21e LW |
5998 | if (strEQ(d,"select")) return -KEY_select; |
5999 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
6000 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
6001 | break; |
6002 | case 7: | |
a0d0e21e LW |
6003 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
6004 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
6005 | break; |
6006 | case 8: | |
a0d0e21e LW |
6007 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
6008 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
6009 | break; |
6010 | case 9: | |
a0d0e21e | 6011 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
6012 | break; |
6013 | case 10: | |
a0d0e21e LW |
6014 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
6015 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
6016 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
6017 | break; |
6018 | case 11: | |
a0d0e21e LW |
6019 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
6020 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
6021 | break; |
6022 | } | |
a687059c LW |
6023 | break; |
6024 | case 'h': | |
79072805 LW |
6025 | switch (len) { |
6026 | case 5: | |
3a6a8333 | 6027 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
6028 | break; |
6029 | case 6: | |
a0d0e21e LW |
6030 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
6031 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
6032 | break; |
6033 | case 7: | |
a0d0e21e | 6034 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
6035 | break; |
6036 | case 8: | |
a0d0e21e LW |
6037 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
6038 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
6039 | break; |
6040 | } | |
a687059c LW |
6041 | break; |
6042 | case 'i': | |
a0d0e21e | 6043 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
6044 | break; |
6045 | case 'l': | |
a0d0e21e | 6046 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
6047 | break; |
6048 | case 'o': | |
79072805 | 6049 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
6050 | if (strEQ(d,"socket")) return -KEY_socket; |
6051 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
6052 | break; |
6053 | case 'p': | |
79072805 | 6054 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 6055 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 6056 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
6057 | break; |
6058 | case 'q': | |
a0d0e21e | 6059 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
6060 | break; |
6061 | case 'r': | |
a0d0e21e | 6062 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
6063 | break; |
6064 | case 't': | |
a0d0e21e | 6065 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 6066 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
6067 | break; |
6068 | case 'u': | |
a0d0e21e | 6069 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 6070 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
6071 | break; |
6072 | case 'y': | |
79072805 LW |
6073 | switch (len) { |
6074 | case 6: | |
a0d0e21e | 6075 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
6076 | break; |
6077 | case 7: | |
a0d0e21e LW |
6078 | if (strEQ(d,"symlink")) return -KEY_symlink; |
6079 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 6080 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
6081 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
6082 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
6083 | break; |
6084 | case 8: | |
a0d0e21e | 6085 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 6086 | break; |
a687059c | 6087 | } |
a687059c LW |
6088 | break; |
6089 | } | |
6090 | break; | |
79072805 LW |
6091 | case 't': |
6092 | switch (len) { | |
6093 | case 2: | |
6094 | if (strEQ(d,"tr")) return KEY_tr; | |
6095 | break; | |
463ee0b2 LW |
6096 | case 3: |
6097 | if (strEQ(d,"tie")) return KEY_tie; | |
6098 | break; | |
79072805 | 6099 | case 4: |
a0d0e21e | 6100 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 6101 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 6102 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
6103 | break; |
6104 | case 5: | |
a0d0e21e | 6105 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
6106 | break; |
6107 | case 7: | |
a0d0e21e | 6108 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
6109 | break; |
6110 | case 8: | |
a0d0e21e | 6111 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 6112 | break; |
378cc40b | 6113 | } |
a687059c | 6114 | break; |
79072805 LW |
6115 | case 'u': |
6116 | switch (len) { | |
6117 | case 2: | |
a0d0e21e LW |
6118 | if (strEQ(d,"uc")) return -KEY_uc; |
6119 | break; | |
6120 | case 3: | |
6121 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
6122 | break; |
6123 | case 5: | |
6124 | if (strEQ(d,"undef")) return KEY_undef; | |
6125 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 6126 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
6127 | if (strEQ(d,"utime")) return -KEY_utime; |
6128 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
6129 | break; |
6130 | case 6: | |
6131 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
6132 | if (strEQ(d,"unpack")) return -KEY_unpack; |
6133 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
6134 | break; |
6135 | case 7: | |
3a6a8333 | 6136 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 6137 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 6138 | break; |
a687059c LW |
6139 | } |
6140 | break; | |
79072805 | 6141 | case 'v': |
a0d0e21e LW |
6142 | if (strEQ(d,"values")) return -KEY_values; |
6143 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 6144 | break; |
79072805 LW |
6145 | case 'w': |
6146 | switch (len) { | |
6147 | case 4: | |
a0d0e21e LW |
6148 | if (strEQ(d,"warn")) return -KEY_warn; |
6149 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
6150 | break; |
6151 | case 5: | |
6152 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 6153 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
6154 | break; |
6155 | case 7: | |
a0d0e21e | 6156 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
6157 | break; |
6158 | case 9: | |
a0d0e21e | 6159 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 6160 | break; |
2f3197b3 | 6161 | } |
a687059c | 6162 | break; |
79072805 | 6163 | case 'x': |
a0d0e21e LW |
6164 | if (len == 1) return -KEY_x; |
6165 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 6166 | break; |
79072805 LW |
6167 | case 'y': |
6168 | if (len == 1) return KEY_y; | |
6169 | break; | |
6170 | case 'z': | |
a687059c LW |
6171 | break; |
6172 | } | |
79072805 | 6173 | return 0; |
a687059c LW |
6174 | } |
6175 | ||
76e3520e | 6176 | STATIC void |
cea2e8a9 | 6177 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 6178 | { |
2f3197b3 LW |
6179 | char *w; |
6180 | ||
d008e5eb | 6181 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
6182 | if (ckWARN(WARN_SYNTAX)) { |
6183 | int level = 1; | |
6184 | for (w = s+2; *w && level; w++) { | |
6185 | if (*w == '(') | |
6186 | ++level; | |
6187 | else if (*w == ')') | |
6188 | --level; | |
6189 | } | |
6190 | if (*w) | |
6191 | for (; *w && isSPACE(*w); w++) ; | |
6192 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 6193 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 6194 | "%s (...) interpreted as function",name); |
d008e5eb | 6195 | } |
2f3197b3 | 6196 | } |
3280af22 | 6197 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 6198 | s++; |
a687059c LW |
6199 | if (*s == '(') |
6200 | s++; | |
3280af22 | 6201 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6202 | s++; |
7e2040f0 | 6203 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 6204 | w = s++; |
7e2040f0 | 6205 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 6206 | s++; |
3280af22 | 6207 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6208 | s++; |
e929a76b | 6209 | if (*s == ',') { |
463ee0b2 | 6210 | int kw; |
e929a76b | 6211 | *s = '\0'; |
864dbfa3 | 6212 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6213 | *s = ','; |
463ee0b2 | 6214 | if (kw) |
e929a76b | 6215 | return; |
cea2e8a9 | 6216 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6217 | } |
6218 | } | |
6219 | } | |
6220 | ||
423cee85 JH |
6221 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6222 | Best used as sv=new_constant(..., sv, ...). | |
6223 | If s, pv are NULL, calls subroutine with one argument, | |
6224 | and type is used with error messages only. */ | |
6225 | ||
b3ac6de7 | 6226 | STATIC SV * |
dff6d3cd | 6227 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6228 | const char *type) |
b3ac6de7 | 6229 | { |
b3ac6de7 | 6230 | dSP; |
3280af22 | 6231 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6232 | SV *res; |
b3ac6de7 IZ |
6233 | SV **cvp; |
6234 | SV *cv, *typesv; | |
f0af216f | 6235 | const char *why1, *why2, *why3; |
4e553d73 | 6236 | |
f0af216f | 6237 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6238 | SV *msg; |
6239 | ||
f0af216f | 6240 | why2 = strEQ(key,"charnames") |
41ab332f | 6241 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6242 | : ""; |
4e553d73 | 6243 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6244 | (type ? type: "undef"), why2); |
6245 | ||
6246 | /* This is convoluted and evil ("goto considered harmful") | |
6247 | * but I do not understand the intricacies of all the different | |
6248 | * failure modes of %^H in here. The goal here is to make | |
6249 | * the most probable error message user-friendly. --jhi */ | |
6250 | ||
6251 | goto msgdone; | |
6252 | ||
423cee85 | 6253 | report: |
4e553d73 | 6254 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6255 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6256 | msgdone: |
423cee85 JH |
6257 | yyerror(SvPVX(msg)); |
6258 | SvREFCNT_dec(msg); | |
6259 | return sv; | |
6260 | } | |
b3ac6de7 IZ |
6261 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6262 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6263 | why1 = "$^H{"; |
6264 | why2 = key; | |
f0af216f | 6265 | why3 = "} is not defined"; |
423cee85 | 6266 | goto report; |
b3ac6de7 IZ |
6267 | } |
6268 | sv_2mortal(sv); /* Parent created it permanently */ | |
6269 | cv = *cvp; | |
423cee85 JH |
6270 | if (!pv && s) |
6271 | pv = sv_2mortal(newSVpvn(s, len)); | |
6272 | if (type && pv) | |
6273 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6274 | else |
423cee85 | 6275 | typesv = &PL_sv_undef; |
4e553d73 | 6276 | |
e788e7d3 | 6277 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6278 | ENTER ; |
6279 | SAVETMPS; | |
4e553d73 | 6280 | |
423cee85 | 6281 | PUSHMARK(SP) ; |
a5845cb7 | 6282 | EXTEND(sp, 3); |
423cee85 JH |
6283 | if (pv) |
6284 | PUSHs(pv); | |
b3ac6de7 | 6285 | PUSHs(sv); |
423cee85 JH |
6286 | if (pv) |
6287 | PUSHs(typesv); | |
b3ac6de7 | 6288 | PUTBACK; |
423cee85 | 6289 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6290 | |
423cee85 | 6291 | SPAGAIN ; |
4e553d73 | 6292 | |
423cee85 | 6293 | /* Check the eval first */ |
9b0e499b | 6294 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6295 | STRLEN n_a; |
6296 | sv_catpv(ERRSV, "Propagated"); | |
6297 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6298 | (void)POPs; |
423cee85 JH |
6299 | res = SvREFCNT_inc(sv); |
6300 | } | |
6301 | else { | |
6302 | res = POPs; | |
e1f15930 | 6303 | (void)SvREFCNT_inc(res); |
423cee85 | 6304 | } |
4e553d73 | 6305 | |
423cee85 JH |
6306 | PUTBACK ; |
6307 | FREETMPS ; | |
6308 | LEAVE ; | |
b3ac6de7 | 6309 | POPSTACK; |
4e553d73 | 6310 | |
b3ac6de7 | 6311 | if (!SvOK(res)) { |
423cee85 JH |
6312 | why1 = "Call to &{$^H{"; |
6313 | why2 = key; | |
f0af216f | 6314 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6315 | sv = res; |
6316 | goto report; | |
9b0e499b | 6317 | } |
423cee85 | 6318 | |
9b0e499b | 6319 | return res; |
b3ac6de7 | 6320 | } |
4e553d73 | 6321 | |
76e3520e | 6322 | STATIC char * |
cea2e8a9 | 6323 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6324 | { |
6325 | register char *d = dest; | |
8903cb82 | 6326 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6327 | for (;;) { |
8903cb82 | 6328 | if (d >= e) |
cea2e8a9 | 6329 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6330 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6331 | *d++ = *s++; |
7e2040f0 | 6332 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6333 | *d++ = ':'; |
6334 | *d++ = ':'; | |
6335 | s++; | |
6336 | } | |
c3e0f903 | 6337 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6338 | *d++ = *s++; |
6339 | *d++ = *s++; | |
6340 | } | |
fd400ab9 | 6341 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6342 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6343 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6344 | t += UTF8SKIP(t); |
6345 | if (d + (t - s) > e) | |
cea2e8a9 | 6346 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6347 | Copy(s, d, t - s, char); |
6348 | d += t - s; | |
6349 | s = t; | |
6350 | } | |
463ee0b2 LW |
6351 | else { |
6352 | *d = '\0'; | |
6353 | *slp = d - dest; | |
6354 | return s; | |
e929a76b | 6355 | } |
378cc40b LW |
6356 | } |
6357 | } | |
6358 | ||
76e3520e | 6359 | STATIC char * |
cea2e8a9 | 6360 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6361 | { |
6362 | register char *d; | |
8903cb82 | 6363 | register char *e; |
79072805 | 6364 | char *bracket = 0; |
748a9306 | 6365 | char funny = *s++; |
378cc40b | 6366 | |
a0d0e21e LW |
6367 | if (isSPACE(*s)) |
6368 | s = skipspace(s); | |
378cc40b | 6369 | d = dest; |
8903cb82 | 6370 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6371 | if (isDIGIT(*s)) { |
8903cb82 | 6372 | while (isDIGIT(*s)) { |
6373 | if (d >= e) | |
cea2e8a9 | 6374 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6375 | *d++ = *s++; |
8903cb82 | 6376 | } |
378cc40b LW |
6377 | } |
6378 | else { | |
463ee0b2 | 6379 | for (;;) { |
8903cb82 | 6380 | if (d >= e) |
cea2e8a9 | 6381 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6382 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6383 | *d++ = *s++; |
7e2040f0 | 6384 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6385 | *d++ = ':'; |
6386 | *d++ = ':'; | |
6387 | s++; | |
6388 | } | |
a0d0e21e | 6389 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6390 | *d++ = *s++; |
6391 | *d++ = *s++; | |
6392 | } | |
fd400ab9 | 6393 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6394 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6395 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6396 | t += UTF8SKIP(t); |
6397 | if (d + (t - s) > e) | |
cea2e8a9 | 6398 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6399 | Copy(s, d, t - s, char); |
6400 | d += t - s; | |
6401 | s = t; | |
6402 | } | |
463ee0b2 LW |
6403 | else |
6404 | break; | |
6405 | } | |
378cc40b LW |
6406 | } |
6407 | *d = '\0'; | |
6408 | d = dest; | |
79072805 | 6409 | if (*d) { |
3280af22 NIS |
6410 | if (PL_lex_state != LEX_NORMAL) |
6411 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6412 | return s; |
378cc40b | 6413 | } |
748a9306 | 6414 | if (*s == '$' && s[1] && |
3792a11b | 6415 | (isALNUM_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6416 | { |
4810e5ec | 6417 | return s; |
5cd24f17 | 6418 | } |
79072805 LW |
6419 | if (*s == '{') { |
6420 | bracket = s; | |
6421 | s++; | |
6422 | } | |
6423 | else if (ck_uni) | |
6424 | check_uni(); | |
93a17b20 | 6425 | if (s < send) |
79072805 LW |
6426 | *d = *s++; |
6427 | d[1] = '\0'; | |
2b92dfce | 6428 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6429 | *d = toCTRL(*s); |
6430 | s++; | |
de3bb511 | 6431 | } |
79072805 | 6432 | if (bracket) { |
748a9306 | 6433 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6434 | while (s < send) { |
6435 | char ch = *s++; | |
bf4acbe4 | 6436 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6437 | *d = ch; |
6438 | break; | |
6439 | } | |
6440 | } | |
748a9306 | 6441 | } |
7e2040f0 | 6442 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6443 | d++; |
a0ed51b3 LW |
6444 | if (UTF) { |
6445 | e = s; | |
155aba94 | 6446 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6447 | e += UTF8SKIP(e); |
fd400ab9 | 6448 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6449 | e += UTF8SKIP(e); |
6450 | } | |
6451 | Copy(s, d, e - s, char); | |
6452 | d += e - s; | |
6453 | s = e; | |
6454 | } | |
6455 | else { | |
2b92dfce | 6456 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6457 | *d++ = *s++; |
2b92dfce | 6458 | if (d >= e) |
cea2e8a9 | 6459 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6460 | } |
79072805 | 6461 | *d = '\0'; |
bf4acbe4 | 6462 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6463 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6464 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6465 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6466 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6467 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6468 | funny, dest, brack, funny, dest, brack); |
6469 | } | |
79072805 | 6470 | bracket++; |
a0be28da | 6471 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6472 | return s; |
6473 | } | |
4e553d73 NIS |
6474 | } |
6475 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6476 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6477 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6478 | && isALNUM(*s)) | |
6479 | { | |
6480 | d++; | |
6481 | while (isALNUM(*s) && d < e) { | |
6482 | *d++ = *s++; | |
6483 | } | |
6484 | if (d >= e) | |
cea2e8a9 | 6485 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6486 | *d = '\0'; |
79072805 LW |
6487 | } |
6488 | if (*s == '}') { | |
6489 | s++; | |
7df0d042 | 6490 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 6491 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
6492 | PL_expect = XREF; |
6493 | } | |
748a9306 LW |
6494 | if (funny == '#') |
6495 | funny = '@'; | |
d008e5eb | 6496 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6497 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6498 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6499 | { |
9014280d | 6500 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6501 | "Ambiguous use of %c{%s} resolved to %c%s", |
6502 | funny, dest, funny, dest); | |
6503 | } | |
6504 | } | |
79072805 LW |
6505 | } |
6506 | else { | |
6507 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6508 | *dest = '\0'; |
79072805 LW |
6509 | } |
6510 | } | |
3280af22 NIS |
6511 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6512 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6513 | return s; |
6514 | } | |
6515 | ||
cea2e8a9 | 6516 | void |
2b36a5a0 | 6517 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6518 | { |
bbce6d69 | 6519 | if (ch == 'i') |
a0d0e21e | 6520 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6521 | else if (ch == 'g') |
6522 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6523 | else if (ch == 'c') |
6524 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6525 | else if (ch == 'o') |
6526 | *pmfl |= PMf_KEEP; | |
6527 | else if (ch == 'm') | |
6528 | *pmfl |= PMf_MULTILINE; | |
6529 | else if (ch == 's') | |
6530 | *pmfl |= PMf_SINGLELINE; | |
6531 | else if (ch == 'x') | |
6532 | *pmfl |= PMf_EXTENDED; | |
6533 | } | |
378cc40b | 6534 | |
76e3520e | 6535 | STATIC char * |
cea2e8a9 | 6536 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6537 | { |
79072805 LW |
6538 | PMOP *pm; |
6539 | char *s; | |
378cc40b | 6540 | |
09bef843 | 6541 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6542 | if (!s) |
cea2e8a9 | 6543 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6544 | |
8782bef2 | 6545 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6546 | if (PL_multi_open == '?') |
79072805 | 6547 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6548 | if(type == OP_QR) { |
6549 | while (*s && strchr("iomsx", *s)) | |
6550 | pmflag(&pm->op_pmflags,*s++); | |
6551 | } | |
6552 | else { | |
6553 | while (*s && strchr("iogcmsx", *s)) | |
6554 | pmflag(&pm->op_pmflags,*s++); | |
6555 | } | |
4ac733c9 MJD |
6556 | /* issue a warning if /c is specified,but /g is not */ |
6557 | if (ckWARN(WARN_REGEXP) && | |
6558 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6559 | { | |
6560 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6561 | } | |
6562 | ||
4633a7c4 | 6563 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6564 | |
3280af22 | 6565 | PL_lex_op = (OP*)pm; |
79072805 | 6566 | yylval.ival = OP_MATCH; |
378cc40b LW |
6567 | return s; |
6568 | } | |
6569 | ||
76e3520e | 6570 | STATIC char * |
cea2e8a9 | 6571 | S_scan_subst(pTHX_ char *start) |
79072805 | 6572 | { |
a0d0e21e | 6573 | register char *s; |
79072805 | 6574 | register PMOP *pm; |
4fdae800 | 6575 | I32 first_start; |
79072805 LW |
6576 | I32 es = 0; |
6577 | ||
79072805 LW |
6578 | yylval.ival = OP_NULL; |
6579 | ||
09bef843 | 6580 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6581 | |
37fd879b | 6582 | if (!s) |
cea2e8a9 | 6583 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6584 | |
3280af22 | 6585 | if (s[-1] == PL_multi_open) |
79072805 LW |
6586 | s--; |
6587 | ||
3280af22 | 6588 | first_start = PL_multi_start; |
09bef843 | 6589 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6590 | if (!s) { |
37fd879b | 6591 | if (PL_lex_stuff) { |
3280af22 | 6592 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6593 | PL_lex_stuff = Nullsv; |
6594 | } | |
cea2e8a9 | 6595 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6596 | } |
3280af22 | 6597 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6598 | |
79072805 | 6599 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6600 | while (*s) { |
a687059c LW |
6601 | if (*s == 'e') { |
6602 | s++; | |
2f3197b3 | 6603 | es++; |
a687059c | 6604 | } |
b3eb6a9b | 6605 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6606 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6607 | else |
6608 | break; | |
378cc40b | 6609 | } |
79072805 | 6610 | |
64e578a2 MJD |
6611 | /* /c is not meaningful with s/// */ |
6612 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6613 | { |
64e578a2 | 6614 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6615 | } |
6616 | ||
79072805 LW |
6617 | if (es) { |
6618 | SV *repl; | |
0244c3a4 GS |
6619 | PL_sublex_info.super_bufptr = s; |
6620 | PL_sublex_info.super_bufend = PL_bufend; | |
6621 | PL_multi_end = 0; | |
79072805 | 6622 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6623 | repl = newSVpvn("",0); |
463ee0b2 | 6624 | while (es-- > 0) |
a0d0e21e | 6625 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6626 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6627 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6628 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6629 | SvEVALED_on(repl); |
3280af22 NIS |
6630 | SvREFCNT_dec(PL_lex_repl); |
6631 | PL_lex_repl = repl; | |
378cc40b | 6632 | } |
79072805 | 6633 | |
4633a7c4 | 6634 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6635 | PL_lex_op = (OP*)pm; |
79072805 | 6636 | yylval.ival = OP_SUBST; |
378cc40b LW |
6637 | return s; |
6638 | } | |
6639 | ||
76e3520e | 6640 | STATIC char * |
cea2e8a9 | 6641 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6642 | { |
a0d0e21e | 6643 | register char* s; |
11343788 | 6644 | OP *o; |
79072805 LW |
6645 | short *tbl; |
6646 | I32 squash; | |
a0ed51b3 | 6647 | I32 del; |
79072805 LW |
6648 | I32 complement; |
6649 | ||
6650 | yylval.ival = OP_NULL; | |
6651 | ||
09bef843 | 6652 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6653 | if (!s) |
cea2e8a9 | 6654 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6655 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6656 | s--; |
6657 | ||
09bef843 | 6658 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6659 | if (!s) { |
37fd879b | 6660 | if (PL_lex_stuff) { |
3280af22 | 6661 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6662 | PL_lex_stuff = Nullsv; |
6663 | } | |
cea2e8a9 | 6664 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6665 | } |
79072805 | 6666 | |
a0ed51b3 | 6667 | complement = del = squash = 0; |
7a1e2023 NC |
6668 | while (1) { |
6669 | switch (*s) { | |
6670 | case 'c': | |
79072805 | 6671 | complement = OPpTRANS_COMPLEMENT; |
7a1e2023 NC |
6672 | break; |
6673 | case 'd': | |
a0ed51b3 | 6674 | del = OPpTRANS_DELETE; |
7a1e2023 NC |
6675 | break; |
6676 | case 's': | |
79072805 | 6677 | squash = OPpTRANS_SQUASH; |
7a1e2023 NC |
6678 | break; |
6679 | default: | |
6680 | goto no_more; | |
6681 | } | |
395c3793 LW |
6682 | s++; |
6683 | } | |
7a1e2023 | 6684 | no_more: |
8973db79 JH |
6685 | |
6686 | New(803, tbl, complement&&!del?258:256, short); | |
6687 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
59f00321 RGS |
6688 | o->op_private &= ~OPpTRANS_ALL; |
6689 | o->op_private |= del|squash|complement| | |
7948272d NIS |
6690 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
6691 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6692 | |
3280af22 | 6693 | PL_lex_op = o; |
79072805 LW |
6694 | yylval.ival = OP_TRANS; |
6695 | return s; | |
6696 | } | |
6697 | ||
76e3520e | 6698 | STATIC char * |
cea2e8a9 | 6699 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6700 | { |
6701 | SV *herewas; | |
6702 | I32 op_type = OP_SCALAR; | |
6703 | I32 len; | |
6704 | SV *tmpstr; | |
6705 | char term; | |
6706 | register char *d; | |
fc36a67e | 6707 | register char *e; |
4633a7c4 | 6708 | char *peek; |
3280af22 | 6709 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6710 | |
6711 | s += 2; | |
3280af22 NIS |
6712 | d = PL_tokenbuf; |
6713 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6714 | if (!outer) |
79072805 | 6715 | *d++ = '\n'; |
bf4acbe4 | 6716 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
3792a11b | 6717 | if (*peek == '`' || *peek == '\'' || *peek =='"') { |
4633a7c4 | 6718 | s = peek; |
79072805 | 6719 | term = *s++; |
3280af22 | 6720 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6721 | d += len; |
3280af22 | 6722 | if (s < PL_bufend) |
79072805 | 6723 | s++; |
79072805 LW |
6724 | } |
6725 | else { | |
6726 | if (*s == '\\') | |
6727 | s++, term = '\''; | |
6728 | else | |
6729 | term = '"'; | |
7e2040f0 | 6730 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6731 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6732 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6733 | if (d < e) |
6734 | *d++ = *s; | |
6735 | } | |
6736 | } | |
3280af22 | 6737 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6738 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6739 | *d++ = '\n'; |
6740 | *d = '\0'; | |
3280af22 | 6741 | len = d - PL_tokenbuf; |
6a27c188 | 6742 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6743 | d = strchr(s, '\r'); |
6744 | if (d) { | |
6745 | char *olds = s; | |
6746 | s = d; | |
3280af22 | 6747 | while (s < PL_bufend) { |
f63a84b2 LW |
6748 | if (*s == '\r') { |
6749 | *d++ = '\n'; | |
6750 | if (*++s == '\n') | |
6751 | s++; | |
6752 | } | |
6753 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6754 | *d++ = *s++; | |
6755 | s++; | |
6756 | } | |
6757 | else | |
6758 | *d++ = *s++; | |
6759 | } | |
6760 | *d = '\0'; | |
3280af22 NIS |
6761 | PL_bufend = d; |
6762 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6763 | s = olds; |
6764 | } | |
6765 | #endif | |
79072805 | 6766 | d = "\n"; |
3280af22 | 6767 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6768 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6769 | else |
79cb57f6 | 6770 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6771 | s += SvCUR(herewas); |
748a9306 | 6772 | |
8d6dde3e | 6773 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6774 | sv_upgrade(tmpstr, SVt_PVIV); |
6775 | if (term == '\'') { | |
79072805 | 6776 | op_type = OP_CONST; |
748a9306 LW |
6777 | SvIVX(tmpstr) = -1; |
6778 | } | |
6779 | else if (term == '`') { | |
79072805 | 6780 | op_type = OP_BACKTICK; |
748a9306 LW |
6781 | SvIVX(tmpstr) = '\\'; |
6782 | } | |
79072805 LW |
6783 | |
6784 | CLINE; | |
57843af0 | 6785 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6786 | PL_multi_open = PL_multi_close = '<'; |
6787 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6788 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6789 | char *bufptr = PL_sublex_info.super_bufptr; | |
6790 | char *bufend = PL_sublex_info.super_bufend; | |
6791 | char *olds = s - SvCUR(herewas); | |
6792 | s = strchr(bufptr, '\n'); | |
6793 | if (!s) | |
6794 | s = bufend; | |
6795 | d = s; | |
6796 | while (s < bufend && | |
6797 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6798 | if (*s++ == '\n') | |
57843af0 | 6799 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6800 | } |
6801 | if (s >= bufend) { | |
eb160463 | 6802 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6803 | missingterm(PL_tokenbuf); |
6804 | } | |
6805 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6806 | sv_setpvn(tmpstr,d+1,s-d); | |
6807 | s += len - 1; | |
6808 | sv_catpvn(herewas,s,bufend-s); | |
689badd5 | 6809 | Copy(SvPVX(herewas),bufptr,SvCUR(herewas) + 1,char); |
0244c3a4 GS |
6810 | |
6811 | s = olds; | |
6812 | goto retval; | |
6813 | } | |
6814 | else if (!outer) { | |
79072805 | 6815 | d = s; |
3280af22 NIS |
6816 | while (s < PL_bufend && |
6817 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6818 | if (*s++ == '\n') |
57843af0 | 6819 | CopLINE_inc(PL_curcop); |
79072805 | 6820 | } |
3280af22 | 6821 | if (s >= PL_bufend) { |
eb160463 | 6822 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6823 | missingterm(PL_tokenbuf); |
79072805 LW |
6824 | } |
6825 | sv_setpvn(tmpstr,d+1,s-d); | |
6826 | s += len - 1; | |
57843af0 | 6827 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6828 | |
3280af22 NIS |
6829 | sv_catpvn(herewas,s,PL_bufend-s); |
6830 | sv_setsv(PL_linestr,herewas); | |
6831 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6832 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6833 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6834 | } |
6835 | else | |
6836 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6837 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6838 | if (!outer || |
3280af22 | 6839 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6840 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6841 | missingterm(PL_tokenbuf); |
79072805 | 6842 | } |
57843af0 | 6843 | CopLINE_inc(PL_curcop); |
3280af22 | 6844 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6845 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6846 | #ifndef PERL_STRICT_CR |
3280af22 | 6847 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6848 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6849 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6850 | { |
3280af22 NIS |
6851 | PL_bufend[-2] = '\n'; |
6852 | PL_bufend--; | |
6853 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6854 | } |
3280af22 NIS |
6855 | else if (PL_bufend[-1] == '\r') |
6856 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6857 | } |
3280af22 NIS |
6858 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6859 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6860 | #endif |
3280af22 | 6861 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6862 | SV *sv = NEWSV(88,0); |
6863 | ||
93a17b20 | 6864 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6865 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6866 | (void)SvIOK_on(sv); |
6867 | SvIVX(sv) = 0; | |
57843af0 | 6868 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6869 | } |
3280af22 | 6870 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
1de9afcd RGS |
6871 | STRLEN off = PL_bufend - 1 - SvPVX(PL_linestr); |
6872 | *(SvPVX(PL_linestr) + off ) = ' '; | |
3280af22 NIS |
6873 | sv_catsv(PL_linestr,herewas); |
6874 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1de9afcd | 6875 | s = SvPVX(PL_linestr) + off; /* In case PV of PL_linestr moved. */ |
79072805 LW |
6876 | } |
6877 | else { | |
3280af22 NIS |
6878 | s = PL_bufend; |
6879 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6880 | } |
6881 | } | |
79072805 | 6882 | s++; |
0244c3a4 | 6883 | retval: |
57843af0 | 6884 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6885 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6886 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6887 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6888 | } |
8990e307 | 6889 | SvREFCNT_dec(herewas); |
2f31ce75 JH |
6890 | if (!IN_BYTES) { |
6891 | if (UTF && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) | |
6892 | SvUTF8_on(tmpstr); | |
6893 | else if (PL_encoding) | |
6894 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
6895 | } | |
3280af22 | 6896 | PL_lex_stuff = tmpstr; |
79072805 LW |
6897 | yylval.ival = op_type; |
6898 | return s; | |
6899 | } | |
6900 | ||
02aa26ce NT |
6901 | /* scan_inputsymbol |
6902 | takes: current position in input buffer | |
6903 | returns: new position in input buffer | |
6904 | side-effects: yylval and lex_op are set. | |
6905 | ||
6906 | This code handles: | |
6907 | ||
6908 | <> read from ARGV | |
6909 | <FH> read from filehandle | |
6910 | <pkg::FH> read from package qualified filehandle | |
6911 | <pkg'FH> read from package qualified filehandle | |
6912 | <$fh> read from filehandle in $fh | |
6913 | <*.h> filename glob | |
6914 | ||
6915 | */ | |
6916 | ||
76e3520e | 6917 | STATIC char * |
cea2e8a9 | 6918 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6919 | { |
02aa26ce | 6920 | register char *s = start; /* current position in buffer */ |
79072805 | 6921 | register char *d; |
fc36a67e | 6922 | register char *e; |
1b420867 | 6923 | char *end; |
79072805 LW |
6924 | I32 len; |
6925 | ||
3280af22 NIS |
6926 | d = PL_tokenbuf; /* start of temp holding space */ |
6927 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6928 | end = strchr(s, '\n'); |
6929 | if (!end) | |
6930 | end = PL_bufend; | |
6931 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6932 | |
6933 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6934 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6935 | */ |
6936 | ||
3280af22 | 6937 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6938 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6939 | if (s >= end) |
cea2e8a9 | 6940 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6941 | |
fc36a67e | 6942 | s++; |
02aa26ce NT |
6943 | |
6944 | /* check for <$fh> | |
6945 | Remember, only scalar variables are interpreted as filehandles by | |
6946 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6947 | treated as a glob() call. | |
6948 | This code makes use of the fact that except for the $ at the front, | |
6949 | a scalar variable and a filehandle look the same. | |
6950 | */ | |
4633a7c4 | 6951 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6952 | |
6953 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6954 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6955 | d++; |
02aa26ce NT |
6956 | |
6957 | /* If we've tried to read what we allow filehandles to look like, and | |
6958 | there's still text left, then it must be a glob() and not a getline. | |
6959 | Use scan_str to pull out the stuff between the <> and treat it | |
6960 | as nothing more than a string. | |
6961 | */ | |
6962 | ||
3280af22 | 6963 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6964 | yylval.ival = OP_GLOB; |
6965 | set_csh(); | |
09bef843 | 6966 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6967 | if (!s) |
cea2e8a9 | 6968 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6969 | return s; |
6970 | } | |
395c3793 | 6971 | else { |
9b3023bc RGS |
6972 | bool readline_overriden = FALSE; |
6973 | GV *gv_readline = Nullgv; | |
6974 | GV **gvp; | |
02aa26ce | 6975 | /* we're in a filehandle read situation */ |
3280af22 | 6976 | d = PL_tokenbuf; |
02aa26ce NT |
6977 | |
6978 | /* turn <> into <ARGV> */ | |
79072805 | 6979 | if (!len) |
689badd5 | 6980 | Copy("ARGV",d,5,char); |
02aa26ce | 6981 | |
9b3023bc | 6982 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6983 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6984 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6985 | || |
ba979b31 | 6986 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6987 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6988 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6989 | readline_overriden = TRUE; |
6990 | ||
02aa26ce NT |
6991 | /* if <$fh>, create the ops to turn the variable into a |
6992 | filehandle | |
6993 | */ | |
79072805 | 6994 | if (*d == '$') { |
a0d0e21e | 6995 | I32 tmp; |
02aa26ce NT |
6996 | |
6997 | /* try to find it in the pad for this block, otherwise find | |
6998 | add symbol table ops | |
6999 | */ | |
11343788 | 7000 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
dd2155a4 DM |
7001 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
7002 | SV *sym = sv_2mortal( | |
7003 | newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)),0)); | |
f558d5af JH |
7004 | sv_catpvn(sym, "::", 2); |
7005 | sv_catpv(sym, d+1); | |
7006 | d = SvPVX(sym); | |
7007 | goto intro_sym; | |
7008 | } | |
7009 | else { | |
7010 | OP *o = newOP(OP_PADSV, 0); | |
7011 | o->op_targ = tmp; | |
9b3023bc RGS |
7012 | PL_lex_op = readline_overriden |
7013 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7014 | append_elem(OP_LIST, o, | |
7015 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
7016 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 7017 | } |
a0d0e21e LW |
7018 | } |
7019 | else { | |
f558d5af JH |
7020 | GV *gv; |
7021 | ++d; | |
7022 | intro_sym: | |
7023 | gv = gv_fetchpv(d, | |
7024 | (PL_in_eval | |
7025 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 7026 | : GV_ADDMULTI), |
f558d5af | 7027 | SVt_PV); |
9b3023bc RGS |
7028 | PL_lex_op = readline_overriden |
7029 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7030 | append_elem(OP_LIST, | |
7031 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
7032 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7033 | : (OP*)newUNOP(OP_READLINE, 0, | |
7034 | newUNOP(OP_RV2SV, 0, | |
7035 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 7036 | } |
7c6fadd6 RGS |
7037 | if (!readline_overriden) |
7038 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 7039 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
7040 | yylval.ival = OP_NULL; |
7041 | } | |
02aa26ce NT |
7042 | |
7043 | /* If it's none of the above, it must be a literal filehandle | |
7044 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 7045 | else { |
85e6fe83 | 7046 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
7047 | PL_lex_op = readline_overriden |
7048 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7049 | append_elem(OP_LIST, | |
7050 | newGVOP(OP_GV, 0, gv), | |
7051 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7052 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
7053 | yylval.ival = OP_NULL; |
7054 | } | |
7055 | } | |
02aa26ce | 7056 | |
79072805 LW |
7057 | return s; |
7058 | } | |
7059 | ||
02aa26ce NT |
7060 | |
7061 | /* scan_str | |
7062 | takes: start position in buffer | |
09bef843 SB |
7063 | keep_quoted preserve \ on the embedded delimiter(s) |
7064 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
7065 | returns: position to continue reading from buffer |
7066 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
7067 | updates the read buffer. | |
7068 | ||
7069 | This subroutine pulls a string out of the input. It is called for: | |
7070 | q single quotes q(literal text) | |
7071 | ' single quotes 'literal text' | |
7072 | qq double quotes qq(interpolate $here please) | |
7073 | " double quotes "interpolate $here please" | |
7074 | qx backticks qx(/bin/ls -l) | |
7075 | ` backticks `/bin/ls -l` | |
7076 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
7077 | m// regexp match m/this/ | |
7078 | s/// regexp substitute s/this/that/ | |
7079 | tr/// string transliterate tr/this/that/ | |
7080 | y/// string transliterate y/this/that/ | |
7081 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 7082 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
7083 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
7084 | ||
7085 | In most of these cases (all but <>, patterns and transliterate) | |
7086 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
7087 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
7088 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
7089 | calls scan_str(). | |
4e553d73 | 7090 | |
02aa26ce NT |
7091 | It skips whitespace before the string starts, and treats the first |
7092 | character as the delimiter. If the delimiter is one of ([{< then | |
7093 | the corresponding "close" character )]}> is used as the closing | |
7094 | delimiter. It allows quoting of delimiters, and if the string has | |
7095 | balanced delimiters ([{<>}]) it allows nesting. | |
7096 | ||
37fd879b HS |
7097 | On success, the SV with the resulting string is put into lex_stuff or, |
7098 | if that is already non-NULL, into lex_repl. The second case occurs only | |
7099 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
7100 | For convenience, the terminating delimiter character is stuffed into | |
7101 | SvIVX of the SV. | |
02aa26ce NT |
7102 | */ |
7103 | ||
76e3520e | 7104 | STATIC char * |
09bef843 | 7105 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 7106 | { |
02aa26ce NT |
7107 | SV *sv; /* scalar value: string */ |
7108 | char *tmps; /* temp string, used for delimiter matching */ | |
7109 | register char *s = start; /* current position in the buffer */ | |
7110 | register char term; /* terminating character */ | |
7111 | register char *to; /* current position in the sv's data */ | |
7112 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 7113 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e IH |
7114 | I32 termcode; /* terminating char. code */ |
7115 | U8 termstr[UTF8_MAXLEN]; /* terminating string */ | |
7116 | STRLEN termlen; /* length of terminating string */ | |
7117 | char *last = NULL; /* last position for nesting bracket */ | |
02aa26ce NT |
7118 | |
7119 | /* skip space before the delimiter */ | |
fb73857a | 7120 | if (isSPACE(*s)) |
7121 | s = skipspace(s); | |
02aa26ce NT |
7122 | |
7123 | /* mark where we are, in case we need to report errors */ | |
79072805 | 7124 | CLINE; |
02aa26ce NT |
7125 | |
7126 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 7127 | term = *s; |
220e2d4e IH |
7128 | if (!UTF) { |
7129 | termcode = termstr[0] = term; | |
7130 | termlen = 1; | |
7131 | } | |
7132 | else { | |
f3b9ce0f | 7133 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
7134 | Copy(s, termstr, termlen, U8); |
7135 | if (!UTF8_IS_INVARIANT(term)) | |
7136 | has_utf8 = TRUE; | |
7137 | } | |
b1c7b182 | 7138 | |
02aa26ce | 7139 | /* mark where we are */ |
57843af0 | 7140 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 7141 | PL_multi_open = term; |
02aa26ce NT |
7142 | |
7143 | /* find corresponding closing delimiter */ | |
93a17b20 | 7144 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
7145 | termcode = termstr[0] = term = tmps[5]; |
7146 | ||
3280af22 | 7147 | PL_multi_close = term; |
79072805 | 7148 | |
02aa26ce | 7149 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
7150 | assuming. 79 is the SV's initial length. What a random number. */ |
7151 | sv = NEWSV(87,79); | |
ed6116ce | 7152 | sv_upgrade(sv, SVt_PVIV); |
220e2d4e | 7153 | SvIVX(sv) = termcode; |
a0d0e21e | 7154 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
7155 | |
7156 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 7157 | if (keep_delims) |
220e2d4e IH |
7158 | sv_catpvn(sv, s, termlen); |
7159 | s += termlen; | |
93a17b20 | 7160 | for (;;) { |
220e2d4e IH |
7161 | if (PL_encoding && !UTF) { |
7162 | bool cont = TRUE; | |
7163 | ||
7164 | while (cont) { | |
7165 | int offset = s - SvPVX(PL_linestr); | |
7166 | bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, | |
f3b9ce0f | 7167 | &offset, (char*)termstr, termlen); |
220e2d4e IH |
7168 | char *ns = SvPVX(PL_linestr) + offset; |
7169 | char *svlast = SvEND(sv) - 1; | |
7170 | ||
7171 | for (; s < ns; s++) { | |
7172 | if (*s == '\n' && !PL_rsfp) | |
7173 | CopLINE_inc(PL_curcop); | |
7174 | } | |
7175 | if (!found) | |
7176 | goto read_more_line; | |
7177 | else { | |
7178 | /* handle quoted delimiters */ | |
52327caf | 7179 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
220e2d4e IH |
7180 | char *t; |
7181 | for (t = svlast-2; t >= SvPVX(sv) && *t == '\\';) | |
7182 | t--; | |
7183 | if ((svlast-1 - t) % 2) { | |
7184 | if (!keep_quoted) { | |
7185 | *(svlast-1) = term; | |
7186 | *svlast = '\0'; | |
7187 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7188 | } | |
7189 | continue; | |
7190 | } | |
7191 | } | |
7192 | if (PL_multi_open == PL_multi_close) { | |
7193 | cont = FALSE; | |
7194 | } | |
7195 | else { | |
7196 | char *t, *w; | |
7197 | if (!last) | |
7198 | last = SvPVX(sv); | |
7199 | for (w = t = last; t < svlast; w++, t++) { | |
7200 | /* At here, all closes are "was quoted" one, | |
7201 | so we don't check PL_multi_close. */ | |
7202 | if (*t == '\\') { | |
7203 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
7204 | t++; | |
7205 | else | |
7206 | *w++ = *t++; | |
7207 | } | |
7208 | else if (*t == PL_multi_open) | |
7209 | brackets++; | |
7210 | ||
7211 | *w = *t; | |
7212 | } | |
7213 | if (w < t) { | |
7214 | *w++ = term; | |
7215 | *w = '\0'; | |
7216 | SvCUR_set(sv, w - SvPVX(sv)); | |
7217 | } | |
7218 | last = w; | |
7219 | if (--brackets <= 0) | |
7220 | cont = FALSE; | |
7221 | } | |
7222 | } | |
7223 | } | |
7224 | if (!keep_delims) { | |
7225 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7226 | *SvEND(sv) = '\0'; | |
7227 | } | |
7228 | break; | |
7229 | } | |
7230 | ||
02aa26ce | 7231 | /* extend sv if need be */ |
3280af22 | 7232 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 7233 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 7234 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 7235 | |
02aa26ce | 7236 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
7237 | if (PL_multi_open == PL_multi_close) { |
7238 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 7239 | /* embedded newlines increment the current line number */ |
3280af22 | 7240 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7241 | CopLINE_inc(PL_curcop); |
02aa26ce | 7242 | /* handle quoted delimiters */ |
3280af22 | 7243 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 7244 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 7245 | s++; |
02aa26ce | 7246 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
7247 | else |
7248 | *to++ = *s++; | |
7249 | } | |
02aa26ce NT |
7250 | /* terminate when run out of buffer (the for() condition), or |
7251 | have found the terminator */ | |
220e2d4e IH |
7252 | else if (*s == term) { |
7253 | if (termlen == 1) | |
7254 | break; | |
f3b9ce0f | 7255 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
7256 | break; |
7257 | } | |
63cd0674 | 7258 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7259 | has_utf8 = TRUE; |
93a17b20 LW |
7260 | *to = *s; |
7261 | } | |
7262 | } | |
02aa26ce NT |
7263 | |
7264 | /* if the terminator isn't the same as the start character (e.g., | |
7265 | matched brackets), we have to allow more in the quoting, and | |
7266 | be prepared for nested brackets. | |
7267 | */ | |
93a17b20 | 7268 | else { |
02aa26ce | 7269 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 7270 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 7271 | /* embedded newlines increment the line count */ |
3280af22 | 7272 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7273 | CopLINE_inc(PL_curcop); |
02aa26ce | 7274 | /* backslashes can escape the open or closing characters */ |
3280af22 | 7275 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
7276 | if (!keep_quoted && |
7277 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
7278 | s++; |
7279 | else | |
7280 | *to++ = *s++; | |
7281 | } | |
02aa26ce | 7282 | /* allow nested opens and closes */ |
3280af22 | 7283 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 7284 | break; |
3280af22 | 7285 | else if (*s == PL_multi_open) |
93a17b20 | 7286 | brackets++; |
63cd0674 | 7287 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7288 | has_utf8 = TRUE; |
93a17b20 LW |
7289 | *to = *s; |
7290 | } | |
7291 | } | |
02aa26ce | 7292 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 7293 | *to = '\0'; |
463ee0b2 | 7294 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 7295 | |
02aa26ce NT |
7296 | /* |
7297 | * this next chunk reads more into the buffer if we're not done yet | |
7298 | */ | |
7299 | ||
b1c7b182 GS |
7300 | if (s < PL_bufend) |
7301 | break; /* handle case where we are done yet :-) */ | |
79072805 | 7302 | |
6a27c188 | 7303 | #ifndef PERL_STRICT_CR |
f63a84b2 | 7304 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
7305 | if ((to[-2] == '\r' && to[-1] == '\n') || |
7306 | (to[-2] == '\n' && to[-1] == '\r')) | |
7307 | { | |
f63a84b2 LW |
7308 | to[-2] = '\n'; |
7309 | to--; | |
7310 | SvCUR_set(sv, to - SvPVX(sv)); | |
7311 | } | |
7312 | else if (to[-1] == '\r') | |
7313 | to[-1] = '\n'; | |
7314 | } | |
7315 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7316 | to[-1] = '\n'; | |
7317 | #endif | |
7318 | ||
220e2d4e | 7319 | read_more_line: |
02aa26ce NT |
7320 | /* if we're out of file, or a read fails, bail and reset the current |
7321 | line marker so we can report where the unterminated string began | |
7322 | */ | |
3280af22 NIS |
7323 | if (!PL_rsfp || |
7324 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7325 | sv_free(sv); |
eb160463 | 7326 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7327 | return Nullch; |
7328 | } | |
02aa26ce | 7329 | /* we read a line, so increment our line counter */ |
57843af0 | 7330 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7331 | |
02aa26ce | 7332 | /* update debugger info */ |
3280af22 | 7333 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7334 | SV *sv = NEWSV(88,0); |
7335 | ||
93a17b20 | 7336 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7337 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7338 | (void)SvIOK_on(sv); |
7339 | SvIVX(sv) = 0; | |
57843af0 | 7340 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7341 | } |
a0ed51b3 | 7342 | |
3280af22 NIS |
7343 | /* having changed the buffer, we must update PL_bufend */ |
7344 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7345 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7346 | } |
4e553d73 | 7347 | |
02aa26ce NT |
7348 | /* at this point, we have successfully read the delimited string */ |
7349 | ||
220e2d4e IH |
7350 | if (!PL_encoding || UTF) { |
7351 | if (keep_delims) | |
7352 | sv_catpvn(sv, s, termlen); | |
7353 | s += termlen; | |
7354 | } | |
7355 | if (has_utf8 || PL_encoding) | |
b1c7b182 | 7356 | SvUTF8_on(sv); |
d0063567 | 7357 | |
57843af0 | 7358 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
7359 | |
7360 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7361 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7362 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7363 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7364 | } |
02aa26ce NT |
7365 | |
7366 | /* decide whether this is the first or second quoted string we've read | |
7367 | for this op | |
7368 | */ | |
4e553d73 | 7369 | |
3280af22 NIS |
7370 | if (PL_lex_stuff) |
7371 | PL_lex_repl = sv; | |
79072805 | 7372 | else |
3280af22 | 7373 | PL_lex_stuff = sv; |
378cc40b LW |
7374 | return s; |
7375 | } | |
7376 | ||
02aa26ce NT |
7377 | /* |
7378 | scan_num | |
7379 | takes: pointer to position in buffer | |
7380 | returns: pointer to new position in buffer | |
7381 | side-effects: builds ops for the constant in yylval.op | |
7382 | ||
7383 | Read a number in any of the formats that Perl accepts: | |
7384 | ||
7fd134d9 JH |
7385 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7386 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7387 | 0b[01](_?[01])* |
7388 | 0[0-7](_?[0-7])* | |
7389 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7390 | |
3280af22 | 7391 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7392 | thing it reads. |
7393 | ||
7394 | If it reads a number without a decimal point or an exponent, it will | |
7395 | try converting the number to an integer and see if it can do so | |
7396 | without loss of precision. | |
7397 | */ | |
4e553d73 | 7398 | |
378cc40b | 7399 | char * |
b73d6f50 | 7400 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7401 | { |
02aa26ce NT |
7402 | register char *s = start; /* current position in buffer */ |
7403 | register char *d; /* destination in temp buffer */ | |
7404 | register char *e; /* end of temp buffer */ | |
86554af2 | 7405 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7406 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7407 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7408 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7409 | static char number_too_long[] = "Number too long"; |
378cc40b | 7410 | |
02aa26ce NT |
7411 | /* We use the first character to decide what type of number this is */ |
7412 | ||
378cc40b | 7413 | switch (*s) { |
79072805 | 7414 | default: |
cea2e8a9 | 7415 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7416 | |
02aa26ce | 7417 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7418 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7419 | case '0': |
7420 | { | |
02aa26ce NT |
7421 | /* variables: |
7422 | u holds the "number so far" | |
4f19785b WSI |
7423 | shift the power of 2 of the base |
7424 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7425 | overflowed was the number more than we can hold? |
7426 | ||
7427 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7428 | we in octal/hex/binary?" indicator to disallow hex characters |
7429 | when in octal mode. | |
02aa26ce | 7430 | */ |
9e24b6e2 JH |
7431 | NV n = 0.0; |
7432 | UV u = 0; | |
79072805 | 7433 | I32 shift; |
9e24b6e2 | 7434 | bool overflowed = FALSE; |
61f33854 | 7435 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
9e24b6e2 JH |
7436 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
7437 | static char* bases[5] = { "", "binary", "", "octal", | |
7438 | "hexadecimal" }; | |
7439 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7440 | "Hexadecimal" }; | |
7441 | static char *maxima[5] = { "", | |
7442 | "0b11111111111111111111111111111111", | |
7443 | "", | |
893fe2c2 | 7444 | "037777777777", |
9e24b6e2 JH |
7445 | "0xffffffff" }; |
7446 | char *base, *Base, *max; | |
378cc40b | 7447 | |
02aa26ce | 7448 | /* check for hex */ |
378cc40b LW |
7449 | if (s[1] == 'x') { |
7450 | shift = 4; | |
7451 | s += 2; | |
61f33854 | 7452 | just_zero = FALSE; |
4f19785b WSI |
7453 | } else if (s[1] == 'b') { |
7454 | shift = 1; | |
7455 | s += 2; | |
61f33854 | 7456 | just_zero = FALSE; |
378cc40b | 7457 | } |
02aa26ce | 7458 | /* check for a decimal in disguise */ |
b78218b7 | 7459 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7460 | goto decimal; |
02aa26ce | 7461 | /* so it must be octal */ |
928753ea | 7462 | else { |
378cc40b | 7463 | shift = 3; |
928753ea JH |
7464 | s++; |
7465 | } | |
7466 | ||
7467 | if (*s == '_') { | |
7468 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7469 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7470 | "Misplaced _ in number"); |
7471 | lastub = s++; | |
7472 | } | |
9e24b6e2 JH |
7473 | |
7474 | base = bases[shift]; | |
7475 | Base = Bases[shift]; | |
7476 | max = maxima[shift]; | |
02aa26ce | 7477 | |
4f19785b | 7478 | /* read the rest of the number */ |
378cc40b | 7479 | for (;;) { |
9e24b6e2 | 7480 | /* x is used in the overflow test, |
893fe2c2 | 7481 | b is the digit we're adding on. */ |
9e24b6e2 | 7482 | UV x, b; |
55497cff | 7483 | |
378cc40b | 7484 | switch (*s) { |
02aa26ce NT |
7485 | |
7486 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7487 | default: |
7488 | goto out; | |
02aa26ce | 7489 | |
928753ea | 7490 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7491 | case '_': |
928753ea | 7492 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7493 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7494 | "Misplaced _ in number"); |
7495 | lastub = s++; | |
de3bb511 | 7496 | break; |
02aa26ce NT |
7497 | |
7498 | /* 8 and 9 are not octal */ | |
378cc40b | 7499 | case '8': case '9': |
4f19785b | 7500 | if (shift == 3) |
cea2e8a9 | 7501 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7502 | /* FALL THROUGH */ |
02aa26ce NT |
7503 | |
7504 | /* octal digits */ | |
4f19785b | 7505 | case '2': case '3': case '4': |
378cc40b | 7506 | case '5': case '6': case '7': |
4f19785b | 7507 | if (shift == 1) |
cea2e8a9 | 7508 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7509 | /* FALL THROUGH */ |
7510 | ||
7511 | case '0': case '1': | |
02aa26ce | 7512 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7513 | goto digit; |
02aa26ce NT |
7514 | |
7515 | /* hex digits */ | |
378cc40b LW |
7516 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7517 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7518 | /* make sure they said 0x */ |
378cc40b LW |
7519 | if (shift != 4) |
7520 | goto out; | |
55497cff | 7521 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7522 | |
7523 | /* Prepare to put the digit we have onto the end | |
7524 | of the number so far. We check for overflows. | |
7525 | */ | |
7526 | ||
55497cff | 7527 | digit: |
61f33854 | 7528 | just_zero = FALSE; |
9e24b6e2 JH |
7529 | if (!overflowed) { |
7530 | x = u << shift; /* make room for the digit */ | |
7531 | ||
7532 | if ((x >> shift) != u | |
7533 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7534 | overflowed = TRUE; |
7535 | n = (NV) u; | |
767a6a26 | 7536 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7537 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7538 | "Integer overflow in %s number", |
7539 | base); | |
7540 | } else | |
7541 | u = x | b; /* add the digit to the end */ | |
7542 | } | |
7543 | if (overflowed) { | |
7544 | n *= nvshift[shift]; | |
7545 | /* If an NV has not enough bits in its | |
7546 | * mantissa to represent an UV this summing of | |
7547 | * small low-order numbers is a waste of time | |
7548 | * (because the NV cannot preserve the | |
7549 | * low-order bits anyway): we could just | |
7550 | * remember when did we overflow and in the | |
7551 | * end just multiply n by the right | |
7552 | * amount. */ | |
7553 | n += (NV) b; | |
55497cff | 7554 | } |
378cc40b LW |
7555 | break; |
7556 | } | |
7557 | } | |
02aa26ce NT |
7558 | |
7559 | /* if we get here, we had success: make a scalar value from | |
7560 | the number. | |
7561 | */ | |
378cc40b | 7562 | out: |
928753ea JH |
7563 | |
7564 | /* final misplaced underbar check */ | |
7565 | if (s[-1] == '_') { | |
7566 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7567 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7568 | } |
7569 | ||
79072805 | 7570 | sv = NEWSV(92,0); |
9e24b6e2 | 7571 | if (overflowed) { |
767a6a26 | 7572 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7573 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7574 | "%s number > %s non-portable", |
7575 | Base, max); | |
7576 | sv_setnv(sv, n); | |
7577 | } | |
7578 | else { | |
15041a67 | 7579 | #if UVSIZE > 4 |
767a6a26 | 7580 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7581 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7582 | "%s number > %s non-portable", |
7583 | Base, max); | |
2cc4c2dc | 7584 | #endif |
9e24b6e2 JH |
7585 | sv_setuv(sv, u); |
7586 | } | |
61f33854 RGS |
7587 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
7588 | sv = new_constant(start, s - start, "integer", | |
7589 | sv, Nullsv, NULL); | |
7590 | else if (PL_hints & HINT_NEW_BINARY) | |
b3ac6de7 | 7591 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7592 | } |
7593 | break; | |
02aa26ce NT |
7594 | |
7595 | /* | |
7596 | handle decimal numbers. | |
7597 | we're also sent here when we read a 0 as the first digit | |
7598 | */ | |
378cc40b LW |
7599 | case '1': case '2': case '3': case '4': case '5': |
7600 | case '6': case '7': case '8': case '9': case '.': | |
7601 | decimal: | |
3280af22 NIS |
7602 | d = PL_tokenbuf; |
7603 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7604 | floatit = FALSE; |
02aa26ce NT |
7605 | |
7606 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7607 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7608 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7609 | if -w is on |
7610 | */ | |
93a17b20 | 7611 | if (*s == '_') { |
928753ea | 7612 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7613 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7614 | "Misplaced _ in number"); |
7615 | lastub = s++; | |
93a17b20 | 7616 | } |
fc36a67e | 7617 | else { |
02aa26ce | 7618 | /* check for end of fixed-length buffer */ |
fc36a67e | 7619 | if (d >= e) |
cea2e8a9 | 7620 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7621 | /* if we're ok, copy the character */ |
378cc40b | 7622 | *d++ = *s++; |
fc36a67e | 7623 | } |
378cc40b | 7624 | } |
02aa26ce NT |
7625 | |
7626 | /* final misplaced underbar check */ | |
928753ea | 7627 | if (lastub && s == lastub + 1) { |
d008e5eb | 7628 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7629 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7630 | } |
02aa26ce NT |
7631 | |
7632 | /* read a decimal portion if there is one. avoid | |
7633 | 3..5 being interpreted as the number 3. followed | |
7634 | by .5 | |
7635 | */ | |
2f3197b3 | 7636 | if (*s == '.' && s[1] != '.') { |
79072805 | 7637 | floatit = TRUE; |
378cc40b | 7638 | *d++ = *s++; |
02aa26ce | 7639 | |
928753ea JH |
7640 | if (*s == '_') { |
7641 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7642 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7643 | "Misplaced _ in number"); |
7644 | lastub = s; | |
7645 | } | |
7646 | ||
7647 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7648 | */ |
fc36a67e | 7649 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7650 | /* fixed length buffer check */ |
fc36a67e | 7651 | if (d >= e) |
cea2e8a9 | 7652 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7653 | if (*s == '_') { |
7654 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7655 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7656 | "Misplaced _ in number"); |
7657 | lastub = s; | |
7658 | } | |
7659 | else | |
fc36a67e | 7660 | *d++ = *s; |
378cc40b | 7661 | } |
928753ea JH |
7662 | /* fractional part ending in underbar? */ |
7663 | if (s[-1] == '_') { | |
7664 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7665 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7666 | "Misplaced _ in number"); |
7667 | } | |
dd629d5b GS |
7668 | if (*s == '.' && isDIGIT(s[1])) { |
7669 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7670 | s = start; |
dd629d5b GS |
7671 | goto vstring; |
7672 | } | |
378cc40b | 7673 | } |
02aa26ce NT |
7674 | |
7675 | /* read exponent part, if present */ | |
3792a11b | 7676 | if ((*s == 'e' || *s == 'E') && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7677 | floatit = TRUE; |
7678 | s++; | |
02aa26ce NT |
7679 | |
7680 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7681 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7682 | |
7fd134d9 JH |
7683 | /* stray preinitial _ */ |
7684 | if (*s == '_') { | |
7685 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7686 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7687 | "Misplaced _ in number"); |
7688 | lastub = s++; | |
7689 | } | |
7690 | ||
02aa26ce | 7691 | /* allow positive or negative exponent */ |
378cc40b LW |
7692 | if (*s == '+' || *s == '-') |
7693 | *d++ = *s++; | |
02aa26ce | 7694 | |
7fd134d9 JH |
7695 | /* stray initial _ */ |
7696 | if (*s == '_') { | |
7697 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7698 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7699 | "Misplaced _ in number"); |
7700 | lastub = s++; | |
7701 | } | |
7702 | ||
7fd134d9 JH |
7703 | /* read digits of exponent */ |
7704 | while (isDIGIT(*s) || *s == '_') { | |
7705 | if (isDIGIT(*s)) { | |
7706 | if (d >= e) | |
7707 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7708 | *d++ = *s++; |
7fd134d9 JH |
7709 | } |
7710 | else { | |
7711 | if (ckWARN(WARN_SYNTAX) && | |
7712 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7713 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7714 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7715 | "Misplaced _ in number"); |
b3b48e3e | 7716 | lastub = s++; |
7fd134d9 | 7717 | } |
7fd134d9 | 7718 | } |
378cc40b | 7719 | } |
02aa26ce | 7720 | |
02aa26ce NT |
7721 | |
7722 | /* make an sv from the string */ | |
79072805 | 7723 | sv = NEWSV(92,0); |
097ee67d | 7724 | |
0b7fceb9 | 7725 | /* |
58bb9ec3 NC |
7726 | We try to do an integer conversion first if no characters |
7727 | indicating "float" have been found. | |
0b7fceb9 MU |
7728 | */ |
7729 | ||
7730 | if (!floatit) { | |
58bb9ec3 NC |
7731 | UV uv; |
7732 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7733 | ||
7734 | if (flags == IS_NUMBER_IN_UV) { | |
7735 | if (uv <= IV_MAX) | |
86554af2 | 7736 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7737 | else |
c239479b | 7738 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7739 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7740 | if (uv <= (UV) IV_MIN) | |
7741 | sv_setiv(sv, -(IV)uv); | |
7742 | else | |
7743 | floatit = TRUE; | |
7744 | } else | |
7745 | floatit = TRUE; | |
7746 | } | |
0b7fceb9 | 7747 | if (floatit) { |
58bb9ec3 NC |
7748 | /* terminate the string */ |
7749 | *d = '\0'; | |
86554af2 JH |
7750 | nv = Atof(PL_tokenbuf); |
7751 | sv_setnv(sv, nv); | |
7752 | } | |
86554af2 | 7753 | |
b8403495 JH |
7754 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7755 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7756 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7757 | (floatit ? "float" : "integer"), |
7758 | sv, Nullsv, NULL); | |
378cc40b | 7759 | break; |
0b7fceb9 | 7760 | |
e312add1 | 7761 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7762 | case 'v': |
dd629d5b | 7763 | vstring: |
f4758303 | 7764 | sv = NEWSV(92,5); /* preallocate storage space */ |
b0f01acb | 7765 | s = scan_vstring(s,sv); |
a7cb1f99 | 7766 | break; |
79072805 | 7767 | } |
a687059c | 7768 | |
02aa26ce NT |
7769 | /* make the op for the constant and return */ |
7770 | ||
a86a20aa | 7771 | if (sv) |
b73d6f50 | 7772 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7773 | else |
b73d6f50 | 7774 | lvalp->opval = Nullop; |
a687059c | 7775 | |
378cc40b LW |
7776 | return s; |
7777 | } | |
7778 | ||
76e3520e | 7779 | STATIC char * |
cea2e8a9 | 7780 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7781 | { |
79072805 | 7782 | register char *eol; |
378cc40b | 7783 | register char *t; |
79cb57f6 | 7784 | SV *stuff = newSVpvn("",0); |
79072805 | 7785 | bool needargs = FALSE; |
c5ee2135 | 7786 | bool eofmt = FALSE; |
378cc40b | 7787 | |
79072805 | 7788 | while (!needargs) { |
a1b95068 | 7789 | if (*s == '.') { |
79072805 | 7790 | /*SUPPRESS 530*/ |
51882d45 | 7791 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7792 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7793 | #else |
bf4acbe4 | 7794 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7795 | #endif |
c5ee2135 WL |
7796 | if (*t == '\n' || t == PL_bufend) { |
7797 | eofmt = TRUE; | |
79072805 | 7798 | break; |
c5ee2135 | 7799 | } |
79072805 | 7800 | } |
3280af22 | 7801 | if (PL_in_eval && !PL_rsfp) { |
a1b95068 | 7802 | eol = memchr(s,'\n',PL_bufend-s); |
0f85fab0 | 7803 | if (!eol++) |
3280af22 | 7804 | eol = PL_bufend; |
0f85fab0 LW |
7805 | } |
7806 | else | |
3280af22 | 7807 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7808 | if (*s != '#') { |
a0d0e21e LW |
7809 | for (t = s; t < eol; t++) { |
7810 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7811 | needargs = FALSE; | |
7812 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7813 | } |
a0d0e21e LW |
7814 | if (*t == '@' || *t == '^') |
7815 | needargs = TRUE; | |
378cc40b | 7816 | } |
7121b347 MG |
7817 | if (eol > s) { |
7818 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7819 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7820 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7821 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7822 | end[-2] = '\n'; | |
7823 | end[-1] = '\0'; | |
7824 | SvCUR(stuff)--; | |
7825 | } | |
2dc4c65b | 7826 | #endif |
7121b347 MG |
7827 | } |
7828 | else | |
7829 | break; | |
79072805 LW |
7830 | } |
7831 | s = eol; | |
3280af22 NIS |
7832 | if (PL_rsfp) { |
7833 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7834 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7835 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7836 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7837 | if (!s) { |
3280af22 | 7838 | s = PL_bufptr; |
378cc40b LW |
7839 | break; |
7840 | } | |
378cc40b | 7841 | } |
463ee0b2 | 7842 | incline(s); |
79072805 | 7843 | } |
a0d0e21e LW |
7844 | enough: |
7845 | if (SvCUR(stuff)) { | |
3280af22 | 7846 | PL_expect = XTERM; |
79072805 | 7847 | if (needargs) { |
3280af22 NIS |
7848 | PL_lex_state = LEX_NORMAL; |
7849 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7850 | force_next(','); |
7851 | } | |
a0d0e21e | 7852 | else |
3280af22 | 7853 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c IH |
7854 | if (!IN_BYTES) { |
7855 | if (UTF && is_utf8_string((U8*)SvPVX(stuff), SvCUR(stuff))) | |
7856 | SvUTF8_on(stuff); | |
7857 | else if (PL_encoding) | |
7858 | sv_recode_to_utf8(stuff, PL_encoding); | |
7859 | } | |
3280af22 | 7860 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 7861 | force_next(THING); |
3280af22 | 7862 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7863 | force_next(LSTOP); |
378cc40b | 7864 | } |
79072805 | 7865 | else { |
8990e307 | 7866 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
7867 | if (eofmt) |
7868 | PL_lex_formbrack = 0; | |
3280af22 | 7869 | PL_bufptr = s; |
79072805 LW |
7870 | } |
7871 | return s; | |
378cc40b | 7872 | } |
a687059c | 7873 | |
76e3520e | 7874 | STATIC void |
cea2e8a9 | 7875 | S_set_csh(pTHX) |
a687059c | 7876 | { |
ae986130 | 7877 | #ifdef CSH |
3280af22 NIS |
7878 | if (!PL_cshlen) |
7879 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7880 | #endif |
a687059c | 7881 | } |
463ee0b2 | 7882 | |
ba6d6ac9 | 7883 | I32 |
864dbfa3 | 7884 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7885 | { |
3280af22 NIS |
7886 | I32 oldsavestack_ix = PL_savestack_ix; |
7887 | CV* outsidecv = PL_compcv; | |
8990e307 | 7888 | |
3280af22 NIS |
7889 | if (PL_compcv) { |
7890 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7891 | } |
7766f137 | 7892 | SAVEI32(PL_subline); |
3280af22 | 7893 | save_item(PL_subname); |
3280af22 | 7894 | SAVESPTR(PL_compcv); |
3280af22 NIS |
7895 | |
7896 | PL_compcv = (CV*)NEWSV(1104,0); | |
7897 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7898 | CvFLAGS(PL_compcv) |= flags; | |
7899 | ||
57843af0 | 7900 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 7901 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
3280af22 | 7902 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); |
a3985cdc | 7903 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 7904 | |
8990e307 LW |
7905 | return oldsavestack_ix; |
7906 | } | |
7907 | ||
084592ab CN |
7908 | #ifdef __SC__ |
7909 | #pragma segment Perl_yylex | |
7910 | #endif | |
8990e307 | 7911 | int |
864dbfa3 | 7912 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7913 | { |
faef0170 | 7914 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7915 | yyerror(s); |
faef0170 | 7916 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7917 | return 0; |
8990e307 LW |
7918 | } |
7919 | ||
7920 | int | |
864dbfa3 | 7921 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7922 | { |
68dc0745 | 7923 | char *where = NULL; |
7924 | char *context = NULL; | |
7925 | int contlen = -1; | |
46fc3d4c | 7926 | SV *msg; |
463ee0b2 | 7927 | |
3280af22 | 7928 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7929 | where = "at EOF"; |
3280af22 NIS |
7930 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7931 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7932 | /* |
7933 | Only for NetWare: | |
7934 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7935 | when the script has error such as not having the closing quotes like: | |
7936 | if ($var eq "value) | |
7937 | Checking of white spaces is anyway done in NetWare code. | |
7938 | */ | |
7939 | #ifndef NETWARE | |
3280af22 NIS |
7940 | while (isSPACE(*PL_oldoldbufptr)) |
7941 | PL_oldoldbufptr++; | |
f355267c | 7942 | #endif |
3280af22 NIS |
7943 | context = PL_oldoldbufptr; |
7944 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7945 | } |
3280af22 NIS |
7946 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7947 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7948 | /* |
7949 | Only for NetWare: | |
7950 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7951 | when the script has error such as not having the closing quotes like: | |
7952 | if ($var eq "value) | |
7953 | Checking of white spaces is anyway done in NetWare code. | |
7954 | */ | |
7955 | #ifndef NETWARE | |
3280af22 NIS |
7956 | while (isSPACE(*PL_oldbufptr)) |
7957 | PL_oldbufptr++; | |
f355267c | 7958 | #endif |
3280af22 NIS |
7959 | context = PL_oldbufptr; |
7960 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7961 | } |
7962 | else if (yychar > 255) | |
68dc0745 | 7963 | where = "next token ???"; |
12fbd33b | 7964 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
7965 | if (PL_lex_state == LEX_NORMAL || |
7966 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7967 | where = "at end of line"; |
3280af22 | 7968 | else if (PL_lex_inpat) |
68dc0745 | 7969 | where = "within pattern"; |
463ee0b2 | 7970 | else |
68dc0745 | 7971 | where = "within string"; |
463ee0b2 | 7972 | } |
46fc3d4c | 7973 | else { |
79cb57f6 | 7974 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7975 | if (yychar < 32) |
cea2e8a9 | 7976 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7977 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7978 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7979 | else |
cea2e8a9 | 7980 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7981 | where = SvPVX(where_sv); |
463ee0b2 | 7982 | } |
46fc3d4c | 7983 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7984 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7985 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7986 | if (context) |
cea2e8a9 | 7987 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7988 | else |
cea2e8a9 | 7989 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7990 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7991 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7992 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7993 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7994 | PL_multi_end = 0; |
a0d0e21e | 7995 | } |
56da5a46 RGS |
7996 | if (PL_in_eval & EVAL_WARNONLY && ckWARN_d(WARN_SYNTAX)) |
7997 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, msg); | |
463ee0b2 | 7998 | else |
5a844595 | 7999 | qerror(msg); |
c7d6bfb2 GS |
8000 | if (PL_error_count >= 10) { |
8001 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 8002 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 8003 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
8004 | else |
8005 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 8006 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 8007 | } |
3280af22 NIS |
8008 | PL_in_my = 0; |
8009 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
8010 | return 0; |
8011 | } | |
084592ab CN |
8012 | #ifdef __SC__ |
8013 | #pragma segment Main | |
8014 | #endif | |
4e35701f | 8015 | |
b250498f | 8016 | STATIC char* |
3ae08724 | 8017 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 8018 | { |
b250498f GS |
8019 | STRLEN slen; |
8020 | slen = SvCUR(PL_linestr); | |
7aa207d6 | 8021 | switch (s[0]) { |
4e553d73 NIS |
8022 | case 0xFF: |
8023 | if (s[1] == 0xFE) { | |
7aa207d6 | 8024 | /* UTF-16 little-endian? (or UTF32-LE?) */ |
3ae08724 | 8025 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
7aa207d6 | 8026 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-LE"); |
01ec43d0 | 8027 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8028 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF16-LE script encoding (BOM)\n"); |
3ae08724 | 8029 | s += 2; |
7aa207d6 | 8030 | utf16le: |
dea0fc0b JH |
8031 | if (PL_bufend > (char*)s) { |
8032 | U8 *news; | |
8033 | I32 newlen; | |
8034 | ||
8035 | filter_add(utf16rev_textfilter, NULL); | |
8036 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8037 | utf16_to_utf8_reversed(s, news, |
8038 | PL_bufend - (char*)s - 1, | |
8039 | &newlen); | |
7aa207d6 | 8040 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8041 | Safefree(news); |
7aa207d6 JH |
8042 | SvUTF8_on(PL_linestr); |
8043 | s = (U8*)SvPVX(PL_linestr); | |
8044 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8045 | } |
b250498f | 8046 | #else |
7aa207d6 | 8047 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-LE"); |
b250498f | 8048 | #endif |
01ec43d0 GS |
8049 | } |
8050 | break; | |
78ae23f5 | 8051 | case 0xFE: |
7aa207d6 | 8052 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 8053 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8054 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b | 8055 | s += 2; |
7aa207d6 | 8056 | utf16be: |
dea0fc0b JH |
8057 | if (PL_bufend > (char *)s) { |
8058 | U8 *news; | |
8059 | I32 newlen; | |
8060 | ||
8061 | filter_add(utf16_textfilter, NULL); | |
8062 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8063 | utf16_to_utf8(s, news, |
8064 | PL_bufend - (char*)s, | |
8065 | &newlen); | |
7aa207d6 | 8066 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8067 | Safefree(news); |
7aa207d6 JH |
8068 | SvUTF8_on(PL_linestr); |
8069 | s = (U8*)SvPVX(PL_linestr); | |
8070 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8071 | } |
b250498f | 8072 | #else |
7aa207d6 | 8073 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-BE"); |
b250498f | 8074 | #endif |
01ec43d0 GS |
8075 | } |
8076 | break; | |
3ae08724 GS |
8077 | case 0xEF: |
8078 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 8079 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
8080 | s += 3; /* UTF-8 */ |
8081 | } | |
8082 | break; | |
8083 | case 0: | |
7aa207d6 JH |
8084 | if (slen > 3) { |
8085 | if (s[1] == 0) { | |
8086 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
8087 | /* UTF-32 big-endian */ | |
8088 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-BE"); | |
8089 | } | |
8090 | } | |
8091 | else if (s[2] == 0 && s[3] != 0) { | |
8092 | /* Leading bytes | |
8093 | * 00 xx 00 xx | |
8094 | * are a good indicator of UTF-16BE. */ | |
8095 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); | |
8096 | goto utf16be; | |
8097 | } | |
01ec43d0 | 8098 | } |
7aa207d6 JH |
8099 | default: |
8100 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
8101 | /* Leading bytes | |
8102 | * xx 00 xx 00 | |
8103 | * are a good indicator of UTF-16LE. */ | |
8104 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); | |
8105 | goto utf16le; | |
8106 | } | |
01ec43d0 | 8107 | } |
b8f84bb2 | 8108 | return (char*)s; |
b250498f | 8109 | } |
4755096e | 8110 | |
4755096e GS |
8111 | /* |
8112 | * restore_rsfp | |
8113 | * Restore a source filter. | |
8114 | */ | |
8115 | ||
8116 | static void | |
acfe0abc | 8117 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
8118 | { |
8119 | PerlIO *fp = (PerlIO*)f; | |
8120 | ||
8121 | if (PL_rsfp == PerlIO_stdin()) | |
8122 | PerlIO_clearerr(PL_rsfp); | |
8123 | else if (PL_rsfp && (PL_rsfp != fp)) | |
8124 | PerlIO_close(PL_rsfp); | |
8125 | PL_rsfp = fp; | |
8126 | } | |
6e3aabd6 GS |
8127 | |
8128 | #ifndef PERL_NO_UTF16_FILTER | |
8129 | static I32 | |
acfe0abc | 8130 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8131 | { |
1de9afcd | 8132 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8133 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8134 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8135 | "utf16_textfilter(%p): %d %d (%d)\n", | |
8136 | utf16_textfilter, idx, maxlen, count)); | |
6e3aabd6 GS |
8137 | if (count) { |
8138 | U8* tmps; | |
dea0fc0b | 8139 | I32 newlen; |
6e3aabd6 | 8140 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8141 | Copy(SvPVX(sv), tmps, old, char); |
8142 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8143 | SvCUR(sv) - old, &newlen); | |
8144 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8145 | } |
1de9afcd RGS |
8146 | DEBUG_P({sv_dump(sv);}); |
8147 | return SvCUR(sv); | |
6e3aabd6 GS |
8148 | } |
8149 | ||
8150 | static I32 | |
acfe0abc | 8151 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8152 | { |
1de9afcd | 8153 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8154 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8155 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8156 | "utf16rev_textfilter(%p): %d %d (%d)\n", | |
8157 | utf16rev_textfilter, idx, maxlen, count)); | |
6e3aabd6 GS |
8158 | if (count) { |
8159 | U8* tmps; | |
dea0fc0b | 8160 | I32 newlen; |
6e3aabd6 | 8161 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8162 | Copy(SvPVX(sv), tmps, old, char); |
8163 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8164 | SvCUR(sv) - old, &newlen); | |
8165 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8166 | } |
1de9afcd | 8167 | DEBUG_P({ sv_dump(sv); }); |
6e3aabd6 GS |
8168 | return count; |
8169 | } | |
8170 | #endif | |
9f4817db | 8171 | |
f333445c JP |
8172 | /* |
8173 | Returns a pointer to the next character after the parsed | |
8174 | vstring, as well as updating the passed in sv. | |
8175 | ||
8176 | Function must be called like | |
8177 | ||
8178 | sv = NEWSV(92,5); | |
8179 | s = scan_vstring(s,sv); | |
8180 | ||
8181 | The sv should already be large enough to store the vstring | |
8182 | passed in, for performance reasons. | |
8183 | ||
8184 | */ | |
8185 | ||
8186 | char * | |
8187 | Perl_scan_vstring(pTHX_ char *s, SV *sv) | |
8188 | { | |
8189 | char *pos = s; | |
8190 | char *start = s; | |
8191 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3e884cbf JH |
8192 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
8193 | pos++; | |
f333445c JP |
8194 | if ( *pos != '.') { |
8195 | /* this may not be a v-string if followed by => */ | |
8fc7bb1c SM |
8196 | char *next = pos; |
8197 | while (next < PL_bufend && isSPACE(*next)) | |
8198 | ++next; | |
8199 | if ((PL_bufend - next) >= 2 && *next == '=' && next[1] == '>' ) { | |
f333445c JP |
8200 | /* return string not v-string */ |
8201 | sv_setpvn(sv,(char *)s,pos-s); | |
8202 | return pos; | |
8203 | } | |
8204 | } | |
8205 | ||
8206 | if (!isALPHA(*pos)) { | |
8207 | UV rev; | |
8208 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
8209 | U8 *tmpend; | |
8210 | ||
8211 | if (*s == 'v') s++; /* get past 'v' */ | |
8212 | ||
8213 | sv_setpvn(sv, "", 0); | |
8214 | ||
8215 | for (;;) { | |
8216 | rev = 0; | |
8217 | { | |
8218 | /* this is atoi() that tolerates underscores */ | |
8219 | char *end = pos; | |
8220 | UV mult = 1; | |
8221 | while (--end >= s) { | |
8222 | UV orev; | |
8223 | if (*end == '_') | |
8224 | continue; | |
8225 | orev = rev; | |
8226 | rev += (*end - '0') * mult; | |
8227 | mult *= 10; | |
8228 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
8229 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
8230 | "Integer overflow in decimal number"); | |
8231 | } | |
8232 | } | |
8233 | #ifdef EBCDIC | |
8234 | if (rev > 0x7FFFFFFF) | |
8235 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
8236 | #endif | |
8237 | /* Append native character for the rev point */ | |
8238 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
8239 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
8240 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
8241 | SvUTF8_on(sv); | |
3e884cbf | 8242 | if (pos + 1 < PL_bufend && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
8243 | s = ++pos; |
8244 | else { | |
8245 | s = pos; | |
8246 | break; | |
8247 | } | |
3e884cbf | 8248 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
8249 | pos++; |
8250 | } | |
8251 | SvPOK_on(sv); | |
8252 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
8253 | SvRMAGICAL_on(sv); | |
8254 | } | |
8255 | return s; | |
8256 | } | |
8257 |