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] == '$')) |
1966 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
1967 | break; |
1968 | default: | |
93a17b20 | 1969 | if (!isALNUM(last_un_char) && !strchr("$@&",last_un_char) && |
79072805 LW |
1970 | isALPHA(*s) && s[1] && isALPHA(s[1])) { |
1971 | char *d = tmpbuf; | |
1972 | while (isALPHA(*s)) | |
1973 | *d++ = *s++; | |
1974 | *d = '\0'; | |
1975 | if (keyword(tmpbuf, d - tmpbuf)) | |
1976 | weight -= 150; | |
1977 | } | |
1978 | if (un_char == last_un_char + 1) | |
1979 | weight += 5; | |
1980 | weight -= seen[un_char]; | |
1981 | break; | |
1982 | } | |
1983 | seen[un_char]++; | |
1984 | } | |
1985 | if (weight >= 0) /* probably a character class */ | |
1986 | return FALSE; | |
1987 | } | |
1988 | ||
1989 | return TRUE; | |
1990 | } | |
ffed7fef | 1991 | |
ffb4593c NT |
1992 | /* |
1993 | * S_intuit_method | |
1994 | * | |
1995 | * Does all the checking to disambiguate | |
1996 | * foo bar | |
1997 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
1998 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
1999 | * | |
2000 | * First argument is the stuff after the first token, e.g. "bar". | |
2001 | * | |
2002 | * Not a method if bar is a filehandle. | |
2003 | * Not a method if foo is a subroutine prototyped to take a filehandle. | |
2004 | * Not a method if it's really "Foo $bar" | |
2005 | * Method if it's "foo $bar" | |
2006 | * Not a method if it's really "print foo $bar" | |
2007 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 2008 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 2009 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
2010 | * => |
2011 | */ | |
2012 | ||
76e3520e | 2013 | STATIC int |
cea2e8a9 | 2014 | S_intuit_method(pTHX_ char *start, GV *gv) |
a0d0e21e LW |
2015 | { |
2016 | char *s = start + (*start == '$'); | |
3280af22 | 2017 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
2018 | STRLEN len; |
2019 | GV* indirgv; | |
2020 | ||
2021 | if (gv) { | |
b6c543e3 | 2022 | CV *cv; |
a0d0e21e LW |
2023 | if (GvIO(gv)) |
2024 | return 0; | |
b6c543e3 IZ |
2025 | if ((cv = GvCVu(gv))) { |
2026 | char *proto = SvPVX(cv); | |
2027 | if (proto) { | |
2028 | if (*proto == ';') | |
2029 | proto++; | |
2030 | if (*proto == '*') | |
2031 | return 0; | |
2032 | } | |
2033 | } else | |
a0d0e21e LW |
2034 | gv = 0; |
2035 | } | |
8903cb82 | 2036 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
2037 | /* start is the beginning of the possible filehandle/object, |
2038 | * and s is the end of it | |
2039 | * tmpbuf is a copy of it | |
2040 | */ | |
2041 | ||
a0d0e21e | 2042 | if (*start == '$') { |
3280af22 | 2043 | if (gv || PL_last_lop_op == OP_PRINT || isUPPER(*PL_tokenbuf)) |
a0d0e21e LW |
2044 | return 0; |
2045 | s = skipspace(s); | |
3280af22 NIS |
2046 | PL_bufptr = start; |
2047 | PL_expect = XREF; | |
a0d0e21e LW |
2048 | return *s == '(' ? FUNCMETH : METHOD; |
2049 | } | |
2050 | if (!keyword(tmpbuf, len)) { | |
c3e0f903 GS |
2051 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
2052 | len -= 2; | |
2053 | tmpbuf[len] = '\0'; | |
2054 | goto bare_package; | |
2055 | } | |
2056 | indirgv = gv_fetchpv(tmpbuf, FALSE, SVt_PVCV); | |
8ebc5c01 | 2057 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
2058 | return 0; |
2059 | /* filehandle or package name makes it a method */ | |
89bfa8cd | 2060 | if (!gv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, FALSE)) { |
a0d0e21e | 2061 | s = skipspace(s); |
3280af22 | 2062 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
55497cff | 2063 | return 0; /* no assumptions -- "=>" quotes bearword */ |
c3e0f903 | 2064 | bare_package: |
3280af22 | 2065 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, |
79cb57f6 | 2066 | newSVpvn(tmpbuf,len)); |
3280af22 NIS |
2067 | PL_nextval[PL_nexttoke].opval->op_private = OPpCONST_BARE; |
2068 | PL_expect = XTERM; | |
a0d0e21e | 2069 | force_next(WORD); |
3280af22 | 2070 | PL_bufptr = s; |
a0d0e21e LW |
2071 | return *s == '(' ? FUNCMETH : METHOD; |
2072 | } | |
2073 | } | |
2074 | return 0; | |
2075 | } | |
2076 | ||
ffb4593c NT |
2077 | /* |
2078 | * S_incl_perldb | |
2079 | * Return a string of Perl code to load the debugger. If PERL5DB | |
2080 | * is set, it will return the contents of that, otherwise a | |
2081 | * compile-time require of perl5db.pl. | |
2082 | */ | |
2083 | ||
76e3520e | 2084 | STATIC char* |
cea2e8a9 | 2085 | S_incl_perldb(pTHX) |
a0d0e21e | 2086 | { |
3280af22 | 2087 | if (PL_perldb) { |
76e3520e | 2088 | char *pdb = PerlEnv_getenv("PERL5DB"); |
a0d0e21e LW |
2089 | |
2090 | if (pdb) | |
2091 | return pdb; | |
93189314 | 2092 | SETERRNO(0,SS_NORMAL); |
a0d0e21e LW |
2093 | return "BEGIN { require 'perl5db.pl' }"; |
2094 | } | |
2095 | return ""; | |
2096 | } | |
2097 | ||
2098 | ||
16d20bd9 | 2099 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 2100 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
2101 | * Note that the filter function only applies to the current source file |
2102 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
2103 | * | |
2104 | * The datasv parameter (which may be NULL) can be used to pass | |
2105 | * private data to this instance of the filter. The filter function | |
2106 | * can recover the SV using the FILTER_DATA macro and use it to | |
2107 | * store private buffers and state information. | |
2108 | * | |
2109 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 2110 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 2111 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
2112 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
2113 | * private use must be set using malloc'd pointers. | |
2114 | */ | |
16d20bd9 AD |
2115 | |
2116 | SV * | |
864dbfa3 | 2117 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 2118 | { |
f4c556ac GS |
2119 | if (!funcp) |
2120 | return Nullsv; | |
2121 | ||
3280af22 NIS |
2122 | if (!PL_rsfp_filters) |
2123 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 2124 | if (!datasv) |
8c52afec | 2125 | datasv = NEWSV(255,0); |
16d20bd9 | 2126 | if (!SvUPGRADE(datasv, SVt_PVIO)) |
cea2e8a9 | 2127 | Perl_die(aTHX_ "Can't upgrade filter_add data to SVt_PVIO"); |
4755096e | 2128 | IoANY(datasv) = (void *)funcp; /* stash funcp into spare field */ |
e0c19803 | 2129 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 2130 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
fe5a182c | 2131 | (void*)funcp, SvPV_nolen(datasv))); |
3280af22 NIS |
2132 | av_unshift(PL_rsfp_filters, 1); |
2133 | av_store(PL_rsfp_filters, 0, datasv) ; | |
16d20bd9 AD |
2134 | return(datasv); |
2135 | } | |
4e553d73 | 2136 | |
16d20bd9 AD |
2137 | |
2138 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 2139 | void |
864dbfa3 | 2140 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 2141 | { |
e0c19803 | 2142 | SV *datasv; |
fe5a182c | 2143 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", (void*)funcp)); |
3280af22 | 2144 | if (!PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
2145 | return; |
2146 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 2147 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
4755096e | 2148 | if (IoANY(datasv) == (void *)funcp) { |
e0c19803 | 2149 | IoFLAGS(datasv) &= ~IOf_FAKE_DIRP; |
4755096e | 2150 | IoANY(datasv) = (void *)NULL; |
3280af22 | 2151 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 2152 | |
16d20bd9 AD |
2153 | return; |
2154 | } | |
2155 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 2156 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
2157 | } |
2158 | ||
2159 | ||
1de9afcd RGS |
2160 | /* Invoke the idxth filter function for the current rsfp. */ |
2161 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 2162 | I32 |
864dbfa3 | 2163 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 2164 | { |
16d20bd9 AD |
2165 | filter_t funcp; |
2166 | SV *datasv = NULL; | |
e50aee73 | 2167 | |
3280af22 | 2168 | if (!PL_rsfp_filters) |
16d20bd9 | 2169 | return -1; |
1de9afcd | 2170 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
2171 | /* Provide a default input filter to make life easy. */ |
2172 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
2173 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2174 | "filter_read %d: from rsfp\n", idx)); | |
4e553d73 | 2175 | if (maxlen) { |
16d20bd9 AD |
2176 | /* Want a block */ |
2177 | int len ; | |
2178 | int old_len = SvCUR(buf_sv) ; | |
2179 | ||
2180 | /* ensure buf_sv is large enough */ | |
eb160463 | 2181 | SvGROW(buf_sv, (STRLEN)(old_len + maxlen)) ; |
3280af22 NIS |
2182 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, maxlen)) <= 0){ |
2183 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2184 | return -1; /* error */ |
2185 | else | |
2186 | return 0 ; /* end of file */ | |
2187 | } | |
16d20bd9 AD |
2188 | SvCUR_set(buf_sv, old_len + len) ; |
2189 | } else { | |
2190 | /* Want a line */ | |
3280af22 NIS |
2191 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
2192 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
2193 | return -1; /* error */ |
2194 | else | |
2195 | return 0 ; /* end of file */ | |
2196 | } | |
16d20bd9 AD |
2197 | } |
2198 | return SvCUR(buf_sv); | |
2199 | } | |
2200 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 2201 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
2202 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2203 | "filter_read %d: skipped (filter deleted)\n", | |
2204 | idx)); | |
16d20bd9 AD |
2205 | return FILTER_READ(idx+1, buf_sv, maxlen); /* recurse */ |
2206 | } | |
2207 | /* Get function pointer hidden within datasv */ | |
4755096e | 2208 | funcp = (filter_t)IoANY(datasv); |
f4c556ac GS |
2209 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
2210 | "filter_read %d: via function %p (%s)\n", | |
fe5a182c | 2211 | idx, (void*)funcp, SvPV_nolen(datasv))); |
16d20bd9 AD |
2212 | /* Call function. The function is expected to */ |
2213 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 2214 | /* Return: <0:error, =0:eof, >0:not eof */ |
acfe0abc | 2215 | return (*funcp)(aTHX_ idx, buf_sv, maxlen); |
16d20bd9 AD |
2216 | } |
2217 | ||
76e3520e | 2218 | STATIC char * |
cea2e8a9 | 2219 | S_filter_gets(pTHX_ register SV *sv, register PerlIO *fp, STRLEN append) |
16d20bd9 | 2220 | { |
c39cd008 | 2221 | #ifdef PERL_CR_FILTER |
3280af22 | 2222 | if (!PL_rsfp_filters) { |
c39cd008 | 2223 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
2224 | } |
2225 | #endif | |
3280af22 | 2226 | if (PL_rsfp_filters) { |
55497cff | 2227 | if (!append) |
2228 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
2229 | if (FILTER_READ(0, sv, 0) > 0) |
2230 | return ( SvPVX(sv) ) ; | |
2231 | else | |
2232 | return Nullch ; | |
2233 | } | |
9d116dd7 | 2234 | else |
fd049845 | 2235 | return (sv_gets(sv, fp, append)); |
a0d0e21e LW |
2236 | } |
2237 | ||
01ec43d0 GS |
2238 | STATIC HV * |
2239 | S_find_in_my_stash(pTHX_ char *pkgname, I32 len) | |
def3634b GS |
2240 | { |
2241 | GV *gv; | |
2242 | ||
01ec43d0 | 2243 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
2244 | return PL_curstash; |
2245 | ||
2246 | if (len > 2 && | |
2247 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
01ec43d0 GS |
2248 | (gv = gv_fetchpv(pkgname, FALSE, SVt_PVHV))) |
2249 | { | |
2250 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
2251 | } |
2252 | ||
2253 | /* use constant CLASS => 'MyClass' */ | |
2254 | if ((gv = gv_fetchpv(pkgname, FALSE, SVt_PVCV))) { | |
2255 | SV *sv; | |
2256 | if (GvCV(gv) && (sv = cv_const_sv(GvCV(gv)))) { | |
2257 | pkgname = SvPV_nolen(sv); | |
2258 | } | |
2259 | } | |
2260 | ||
2261 | return gv_stashpv(pkgname, FALSE); | |
2262 | } | |
a0d0e21e | 2263 | |
748a9306 LW |
2264 | #ifdef DEBUGGING |
2265 | static char* exp_name[] = | |
09bef843 | 2266 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 2267 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 2268 | }; |
748a9306 | 2269 | #endif |
463ee0b2 | 2270 | |
02aa26ce NT |
2271 | /* |
2272 | yylex | |
2273 | ||
2274 | Works out what to call the token just pulled out of the input | |
2275 | stream. The yacc parser takes care of taking the ops we return and | |
2276 | stitching them into a tree. | |
2277 | ||
2278 | Returns: | |
2279 | PRIVATEREF | |
2280 | ||
2281 | Structure: | |
2282 | if read an identifier | |
2283 | if we're in a my declaration | |
2284 | croak if they tried to say my($foo::bar) | |
2285 | build the ops for a my() declaration | |
2286 | if it's an access to a my() variable | |
2287 | are we in a sort block? | |
2288 | croak if my($a); $a <=> $b | |
2289 | build ops for access to a my() variable | |
2290 | if in a dq string, and they've said @foo and we can't find @foo | |
2291 | croak | |
2292 | build ops for a bareword | |
2293 | if we already built the token before, use it. | |
2294 | */ | |
2295 | ||
20141f0e | 2296 | |
dba4d153 JH |
2297 | #ifdef __SC__ |
2298 | #pragma segment Perl_yylex | |
2299 | #endif | |
dba4d153 | 2300 | int |
dba4d153 | 2301 | Perl_yylex(pTHX) |
20141f0e | 2302 | { |
3afc138a | 2303 | register char *s = PL_bufptr; |
378cc40b | 2304 | register char *d; |
79072805 | 2305 | register I32 tmp; |
463ee0b2 | 2306 | STRLEN len; |
161b471a NIS |
2307 | GV *gv = Nullgv; |
2308 | GV **gvp = 0; | |
aa7440fb | 2309 | bool bof = FALSE; |
1d239bbb | 2310 | I32 orig_keyword = 0; |
a687059c | 2311 | |
bbf60fe6 DM |
2312 | DEBUG_T( { |
2313 | PerlIO_printf(Perl_debug_log, "### LEX_%s\n", | |
2314 | lex_state_names[PL_lex_state]); | |
2315 | } ); | |
02aa26ce | 2316 | /* check if there's an identifier for us to look at */ |
ba979b31 | 2317 | if (PL_pending_ident) |
bbf60fe6 | 2318 | return REPORT(S_pending_ident(aTHX)); |
bbce6d69 | 2319 | |
02aa26ce NT |
2320 | /* no identifier pending identification */ |
2321 | ||
3280af22 | 2322 | switch (PL_lex_state) { |
79072805 LW |
2323 | #ifdef COMMENTARY |
2324 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
2325 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
2326 | break; | |
2327 | #endif | |
2328 | ||
09bef843 | 2329 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 2330 | case LEX_KNOWNEXT: |
3280af22 NIS |
2331 | PL_nexttoke--; |
2332 | yylval = PL_nextval[PL_nexttoke]; | |
2333 | if (!PL_nexttoke) { | |
2334 | PL_lex_state = PL_lex_defer; | |
2335 | PL_expect = PL_lex_expect; | |
2336 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 2337 | } |
607df283 | 2338 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
4659c93f | 2339 | "### Next token after '%s' was known, type %"IVdf"\n", PL_bufptr, |
5f80b19c | 2340 | (IV)PL_nexttype[PL_nexttoke]); }); |
607df283 | 2341 | |
bbf60fe6 | 2342 | return REPORT(PL_nexttype[PL_nexttoke]); |
79072805 | 2343 | |
02aa26ce | 2344 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 2345 | when we get here, PL_bufptr is at the \ |
02aa26ce | 2346 | */ |
79072805 LW |
2347 | case LEX_INTERPCASEMOD: |
2348 | #ifdef DEBUGGING | |
3280af22 | 2349 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
cea2e8a9 | 2350 | Perl_croak(aTHX_ "panic: INTERPCASEMOD"); |
79072805 | 2351 | #endif |
02aa26ce | 2352 | /* handle \E or end of string */ |
3280af22 | 2353 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
a0d0e21e | 2354 | char oldmod; |
02aa26ce NT |
2355 | |
2356 | /* if at a \E */ | |
3280af22 NIS |
2357 | if (PL_lex_casemods) { |
2358 | oldmod = PL_lex_casestack[--PL_lex_casemods]; | |
2359 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
02aa26ce | 2360 | |
3280af22 NIS |
2361 | if (PL_bufptr != PL_bufend && strchr("LUQ", oldmod)) { |
2362 | PL_bufptr += 2; | |
2363 | PL_lex_state = LEX_INTERPCONCAT; | |
a0d0e21e | 2364 | } |
bbf60fe6 | 2365 | return REPORT(')'); |
79072805 | 2366 | } |
3280af22 NIS |
2367 | if (PL_bufptr != PL_bufend) |
2368 | PL_bufptr += 2; | |
2369 | PL_lex_state = LEX_INTERPCONCAT; | |
cea2e8a9 | 2370 | return yylex(); |
79072805 LW |
2371 | } |
2372 | else { | |
607df283 | 2373 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2374 | "### Saw case modifier at '%s'\n", PL_bufptr); }); |
3280af22 | 2375 | s = PL_bufptr + 1; |
6e909404 JH |
2376 | if (s[1] == '\\' && s[2] == 'E') { |
2377 | PL_bufptr = s + 3; | |
2378 | PL_lex_state = LEX_INTERPCONCAT; | |
2379 | return yylex(); | |
a0d0e21e | 2380 | } |
6e909404 JH |
2381 | else { |
2382 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
2383 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
2384 | if (strchr("LU", *s) && | |
2385 | (strchr(PL_lex_casestack, 'L') || strchr(PL_lex_casestack, 'U'))) { | |
2386 | PL_lex_casestack[--PL_lex_casemods] = '\0'; | |
bbf60fe6 | 2387 | return REPORT(')'); |
6e909404 JH |
2388 | } |
2389 | if (PL_lex_casemods > 10) | |
2390 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
2391 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
2392 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
2393 | PL_lex_state = LEX_INTERPCONCAT; | |
2394 | PL_nextval[PL_nexttoke].ival = 0; | |
2395 | force_next('('); | |
2396 | if (*s == 'l') | |
2397 | PL_nextval[PL_nexttoke].ival = OP_LCFIRST; | |
2398 | else if (*s == 'u') | |
2399 | PL_nextval[PL_nexttoke].ival = OP_UCFIRST; | |
2400 | else if (*s == 'L') | |
2401 | PL_nextval[PL_nexttoke].ival = OP_LC; | |
2402 | else if (*s == 'U') | |
2403 | PL_nextval[PL_nexttoke].ival = OP_UC; | |
2404 | else if (*s == 'Q') | |
2405 | PL_nextval[PL_nexttoke].ival = OP_QUOTEMETA; | |
2406 | else | |
2407 | Perl_croak(aTHX_ "panic: yylex"); | |
2408 | PL_bufptr = s + 1; | |
a0d0e21e | 2409 | } |
79072805 | 2410 | force_next(FUNC); |
3280af22 NIS |
2411 | if (PL_lex_starts) { |
2412 | s = PL_bufptr; | |
2413 | PL_lex_starts = 0; | |
131b3ad0 DM |
2414 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2415 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
2416 | OPERATOR(','); | |
2417 | else | |
2418 | Aop(OP_CONCAT); | |
79072805 LW |
2419 | } |
2420 | else | |
cea2e8a9 | 2421 | return yylex(); |
79072805 LW |
2422 | } |
2423 | ||
55497cff | 2424 | case LEX_INTERPPUSH: |
bbf60fe6 | 2425 | return REPORT(sublex_push()); |
55497cff | 2426 | |
79072805 | 2427 | case LEX_INTERPSTART: |
3280af22 | 2428 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2429 | return REPORT(sublex_done()); |
607df283 | 2430 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
5f80b19c | 2431 | "### Interpolated variable at '%s'\n", PL_bufptr); }); |
3280af22 NIS |
2432 | PL_expect = XTERM; |
2433 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
2434 | PL_lex_state = LEX_INTERPNORMAL; | |
2435 | if (PL_lex_dojoin) { | |
2436 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 | 2437 | force_next(','); |
a0d0e21e | 2438 | force_ident("\"", '$'); |
3280af22 | 2439 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2440 | force_next('$'); |
3280af22 | 2441 | PL_nextval[PL_nexttoke].ival = 0; |
79072805 | 2442 | force_next('('); |
3280af22 | 2443 | PL_nextval[PL_nexttoke].ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
2444 | force_next(FUNC); |
2445 | } | |
3280af22 NIS |
2446 | if (PL_lex_starts++) { |
2447 | s = PL_bufptr; | |
131b3ad0 DM |
2448 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
2449 | if (!PL_lex_casemods && PL_lex_inpat) | |
2450 | OPERATOR(','); | |
2451 | else | |
2452 | Aop(OP_CONCAT); | |
79072805 | 2453 | } |
cea2e8a9 | 2454 | return yylex(); |
79072805 LW |
2455 | |
2456 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
2457 | if (intuit_more(PL_bufptr)) { |
2458 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
2459 | break; |
2460 | } | |
2461 | /* FALL THROUGH */ | |
2462 | ||
2463 | case LEX_INTERPEND: | |
3280af22 NIS |
2464 | if (PL_lex_dojoin) { |
2465 | PL_lex_dojoin = FALSE; | |
2466 | PL_lex_state = LEX_INTERPCONCAT; | |
bbf60fe6 | 2467 | return REPORT(')'); |
79072805 | 2468 | } |
43a16006 | 2469 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 2470 | && SvEVALED(PL_lex_repl)) |
43a16006 | 2471 | { |
e9fa98b2 | 2472 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 2473 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
e9fa98b2 HS |
2474 | PL_lex_repl = Nullsv; |
2475 | } | |
79072805 LW |
2476 | /* FALLTHROUGH */ |
2477 | case LEX_INTERPCONCAT: | |
2478 | #ifdef DEBUGGING | |
3280af22 | 2479 | if (PL_lex_brackets) |
cea2e8a9 | 2480 | Perl_croak(aTHX_ "panic: INTERPCONCAT"); |
79072805 | 2481 | #endif |
3280af22 | 2482 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 2483 | return REPORT(sublex_done()); |
79072805 | 2484 | |
3280af22 NIS |
2485 | if (SvIVX(PL_linestr) == '\'') { |
2486 | SV *sv = newSVsv(PL_linestr); | |
2487 | if (!PL_lex_inpat) | |
76e3520e | 2488 | sv = tokeq(sv); |
3280af22 | 2489 | else if ( PL_hints & HINT_NEW_RE ) |
b3ac6de7 | 2490 | sv = new_constant(NULL, 0, "qr", sv, sv, "q"); |
79072805 | 2491 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 2492 | s = PL_bufend; |
79072805 LW |
2493 | } |
2494 | else { | |
3280af22 | 2495 | s = scan_const(PL_bufptr); |
79072805 | 2496 | if (*s == '\\') |
3280af22 | 2497 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 2498 | else |
3280af22 | 2499 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
2500 | } |
2501 | ||
3280af22 NIS |
2502 | if (s != PL_bufptr) { |
2503 | PL_nextval[PL_nexttoke] = yylval; | |
2504 | PL_expect = XTERM; | |
79072805 | 2505 | force_next(THING); |
131b3ad0 DM |
2506 | if (PL_lex_starts++) { |
2507 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ | |
2508 | if (!PL_lex_casemods && PL_lex_inpat) | |
2509 | OPERATOR(','); | |
2510 | else | |
2511 | Aop(OP_CONCAT); | |
2512 | } | |
79072805 | 2513 | else { |
3280af22 | 2514 | PL_bufptr = s; |
cea2e8a9 | 2515 | return yylex(); |
79072805 LW |
2516 | } |
2517 | } | |
2518 | ||
cea2e8a9 | 2519 | return yylex(); |
a0d0e21e | 2520 | case LEX_FORMLINE: |
3280af22 NIS |
2521 | PL_lex_state = LEX_NORMAL; |
2522 | s = scan_formline(PL_bufptr); | |
2523 | if (!PL_lex_formbrack) | |
a0d0e21e LW |
2524 | goto rightbracket; |
2525 | OPERATOR(';'); | |
79072805 LW |
2526 | } |
2527 | ||
3280af22 NIS |
2528 | s = PL_bufptr; |
2529 | PL_oldoldbufptr = PL_oldbufptr; | |
2530 | PL_oldbufptr = s; | |
607df283 | 2531 | DEBUG_T( { |
bbf60fe6 | 2532 | PerlIO_printf(Perl_debug_log, "### Tokener expecting %s at [%s]\n", |
bf49b057 | 2533 | exp_name[PL_expect], s); |
5f80b19c | 2534 | } ); |
463ee0b2 LW |
2535 | |
2536 | retry: | |
378cc40b LW |
2537 | switch (*s) { |
2538 | default: | |
7e2040f0 | 2539 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 2540 | goto keylookup; |
cea2e8a9 | 2541 | Perl_croak(aTHX_ "Unrecognized character \\x%02X", *s & 255); |
e929a76b LW |
2542 | case 4: |
2543 | case 26: | |
2544 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 2545 | case 0: |
3280af22 NIS |
2546 | if (!PL_rsfp) { |
2547 | PL_last_uni = 0; | |
2548 | PL_last_lop = 0; | |
c5ee2135 WL |
2549 | if (PL_lex_brackets) { |
2550 | if (PL_lex_formbrack) | |
2551 | yyerror("Format not terminated"); | |
2552 | else | |
2553 | yyerror("Missing right curly or square bracket"); | |
2554 | } | |
4e553d73 | 2555 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2556 | "### Tokener got EOF\n"); |
5f80b19c | 2557 | } ); |
79072805 | 2558 | TOKEN(0); |
463ee0b2 | 2559 | } |
3280af22 | 2560 | if (s++ < PL_bufend) |
a687059c | 2561 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
2562 | PL_last_uni = 0; |
2563 | PL_last_lop = 0; | |
2564 | if (!PL_in_eval && !PL_preambled) { | |
2565 | PL_preambled = TRUE; | |
2566 | sv_setpv(PL_linestr,incl_perldb()); | |
2567 | if (SvCUR(PL_linestr)) | |
2568 | sv_catpv(PL_linestr,";"); | |
2569 | if (PL_preambleav){ | |
2570 | while(AvFILLp(PL_preambleav) >= 0) { | |
2571 | SV *tmpsv = av_shift(PL_preambleav); | |
2572 | sv_catsv(PL_linestr, tmpsv); | |
2573 | sv_catpv(PL_linestr, ";"); | |
91b7def8 | 2574 | sv_free(tmpsv); |
2575 | } | |
3280af22 NIS |
2576 | sv_free((SV*)PL_preambleav); |
2577 | PL_preambleav = NULL; | |
91b7def8 | 2578 | } |
3280af22 NIS |
2579 | if (PL_minus_n || PL_minus_p) { |
2580 | sv_catpv(PL_linestr, "LINE: while (<>) {"); | |
2581 | if (PL_minus_l) | |
2582 | sv_catpv(PL_linestr,"chomp;"); | |
2583 | if (PL_minus_a) { | |
3280af22 NIS |
2584 | if (PL_minus_F) { |
2585 | if (strchr("/'\"", *PL_splitstr) | |
2586 | && strchr(PL_splitstr + 1, *PL_splitstr)) | |
3db68c4c | 2587 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 2588 | else { |
2589 | char delim; | |
2590 | s = "'~#\200\1'"; /* surely one char is unused...*/ | |
3280af22 | 2591 | while (s[1] && strchr(PL_splitstr, *s)) s++; |
54310121 | 2592 | delim = *s; |
75c72d73 | 2593 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s%c", |
46fc3d4c | 2594 | "q" + (delim == '\''), delim); |
3280af22 | 2595 | for (s = PL_splitstr; *s; s++) { |
54310121 | 2596 | if (*s == '\\') |
3280af22 NIS |
2597 | sv_catpvn(PL_linestr, "\\", 1); |
2598 | sv_catpvn(PL_linestr, s, 1); | |
54310121 | 2599 | } |
cea2e8a9 | 2600 | Perl_sv_catpvf(aTHX_ PL_linestr, "%c);", delim); |
54310121 | 2601 | } |
2304df62 AD |
2602 | } |
2603 | else | |
75c72d73 | 2604 | sv_catpv(PL_linestr,"our @F=split(' ');"); |
2304df62 | 2605 | } |
79072805 | 2606 | } |
3280af22 NIS |
2607 | sv_catpv(PL_linestr, "\n"); |
2608 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2609 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2610 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2611 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
a0d0e21e LW |
2612 | SV *sv = NEWSV(85,0); |
2613 | ||
2614 | sv_upgrade(sv, SVt_PVMG); | |
3280af22 | 2615 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2616 | (void)SvIOK_on(sv); |
2617 | SvIVX(sv) = 0; | |
57843af0 | 2618 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a0d0e21e | 2619 | } |
79072805 | 2620 | goto retry; |
a687059c | 2621 | } |
e929a76b | 2622 | do { |
aa7440fb | 2623 | bof = PL_rsfp ? TRUE : FALSE; |
7e28d3af JH |
2624 | if ((s = filter_gets(PL_linestr, PL_rsfp, 0)) == Nullch) { |
2625 | fake_eof: | |
2626 | if (PL_rsfp) { | |
2627 | if (PL_preprocess && !PL_in_eval) | |
2628 | (void)PerlProc_pclose(PL_rsfp); | |
2629 | else if ((PerlIO *)PL_rsfp == PerlIO_stdin()) | |
2630 | PerlIO_clearerr(PL_rsfp); | |
2631 | else | |
2632 | (void)PerlIO_close(PL_rsfp); | |
2633 | PL_rsfp = Nullfp; | |
2634 | PL_doextract = FALSE; | |
2635 | } | |
2636 | if (!PL_in_eval && (PL_minus_n || PL_minus_p)) { | |
2637 | sv_setpv(PL_linestr,PL_minus_p ? ";}continue{print" : ""); | |
2638 | sv_catpv(PL_linestr,";}"); | |
2639 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2640 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2641 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2642 | PL_minus_n = PL_minus_p = 0; |
2643 | goto retry; | |
2644 | } | |
2645 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
207e3d1a | 2646 | PL_last_lop = PL_last_uni = Nullch; |
7e28d3af JH |
2647 | sv_setpv(PL_linestr,""); |
2648 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
2649 | } | |
7aa207d6 JH |
2650 | /* If it looks like the start of a BOM or raw UTF-16, |
2651 | * check if it in fact is. */ | |
2652 | else if (bof && | |
2653 | (*s == 0 || | |
2654 | *(U8*)s == 0xEF || | |
2655 | *(U8*)s >= 0xFE || | |
2656 | s[1] == 0)) { | |
226017aa | 2657 | #ifdef PERLIO_IS_STDIO |
e3f494f1 JH |
2658 | # ifdef __GNU_LIBRARY__ |
2659 | # if __GNU_LIBRARY__ == 1 /* Linux glibc5 */ | |
226017aa DD |
2660 | # define FTELL_FOR_PIPE_IS_BROKEN |
2661 | # endif | |
e3f494f1 JH |
2662 | # else |
2663 | # ifdef __GLIBC__ | |
2664 | # if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */ | |
2665 | # define FTELL_FOR_PIPE_IS_BROKEN | |
2666 | # endif | |
2667 | # endif | |
226017aa DD |
2668 | # endif |
2669 | #endif | |
2670 | #ifdef FTELL_FOR_PIPE_IS_BROKEN | |
2671 | /* This loses the possibility to detect the bof | |
2672 | * situation on perl -P when the libc5 is being used. | |
2673 | * Workaround? Maybe attach some extra state to PL_rsfp? | |
2674 | */ | |
2675 | if (!PL_preprocess) | |
7e28d3af | 2676 | bof = PerlIO_tell(PL_rsfp) == SvCUR(PL_linestr); |
226017aa | 2677 | #else |
eb160463 | 2678 | bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr); |
226017aa | 2679 | #endif |
7e28d3af | 2680 | if (bof) { |
3280af22 | 2681 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 2682 | s = swallow_bom((U8*)s); |
e929a76b | 2683 | } |
378cc40b | 2684 | } |
3280af22 | 2685 | if (PL_doextract) { |
a0d0e21e LW |
2686 | /* Incest with pod. */ |
2687 | if (*s == '=' && strnEQ(s, "=cut", 4)) { | |
3280af22 NIS |
2688 | sv_setpv(PL_linestr, ""); |
2689 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2690 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2691 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2692 | PL_doextract = FALSE; |
a0d0e21e | 2693 | } |
4e553d73 | 2694 | } |
463ee0b2 | 2695 | incline(s); |
3280af22 NIS |
2696 | } while (PL_doextract); |
2697 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; | |
2698 | if (PERLDB_LINE && PL_curstash != PL_debstash) { | |
79072805 | 2699 | SV *sv = NEWSV(85,0); |
a687059c | 2700 | |
93a17b20 | 2701 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 2702 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
2703 | (void)SvIOK_on(sv); |
2704 | SvIVX(sv) = 0; | |
57843af0 | 2705 | av_store(CopFILEAV(PL_curcop),(I32)CopLINE(PL_curcop),sv); |
a687059c | 2706 | } |
3280af22 | 2707 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 2708 | PL_last_lop = PL_last_uni = Nullch; |
57843af0 | 2709 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 2710 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 2711 | s++; |
a0d0e21e | 2712 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 2713 | s++; |
44a8e56a | 2714 | d = Nullch; |
3280af22 | 2715 | if (!PL_in_eval) { |
44a8e56a | 2716 | if (*s == '#' && *(s+1) == '!') |
2717 | d = s + 2; | |
2718 | #ifdef ALTERNATE_SHEBANG | |
2719 | else { | |
2720 | static char as[] = ALTERNATE_SHEBANG; | |
2721 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) | |
2722 | d = s + (sizeof(as) - 1); | |
2723 | } | |
2724 | #endif /* ALTERNATE_SHEBANG */ | |
2725 | } | |
2726 | if (d) { | |
b8378b72 | 2727 | char *ipath; |
774d564b | 2728 | char *ipathend; |
b8378b72 | 2729 | |
774d564b | 2730 | while (isSPACE(*d)) |
b8378b72 CS |
2731 | d++; |
2732 | ipath = d; | |
774d564b | 2733 | while (*d && !isSPACE(*d)) |
2734 | d++; | |
2735 | ipathend = d; | |
2736 | ||
2737 | #ifdef ARG_ZERO_IS_SCRIPT | |
2738 | if (ipathend > ipath) { | |
2739 | /* | |
2740 | * HP-UX (at least) sets argv[0] to the script name, | |
2741 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
2742 | * at least, set argv[0] to the basename of the Perl | |
2743 | * interpreter. So, having found "#!", we'll set it right. | |
2744 | */ | |
ee2f7564 | 2745 | SV *x = GvSV(gv_fetchpv("\030", TRUE, SVt_PV)); /* $^X */ |
774d564b | 2746 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 2747 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 2748 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 2749 | SvSETMAGIC(x); |
2750 | } | |
556c1dec JH |
2751 | else { |
2752 | STRLEN blen; | |
2753 | STRLEN llen; | |
2754 | char *bstart = SvPV(CopFILESV(PL_curcop),blen); | |
2755 | char *lstart = SvPV(x,llen); | |
2756 | if (llen < blen) { | |
2757 | bstart += blen - llen; | |
2758 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
2759 | sv_setpvn(x, ipath, ipathend - ipath); | |
2760 | SvSETMAGIC(x); | |
2761 | } | |
2762 | } | |
2763 | } | |
774d564b | 2764 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 2765 | } |
774d564b | 2766 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
2767 | |
2768 | /* | |
2769 | * Look for options. | |
2770 | */ | |
748a9306 | 2771 | d = instr(s,"perl -"); |
84e30d1a | 2772 | if (!d) { |
748a9306 | 2773 | d = instr(s,"perl"); |
84e30d1a GS |
2774 | #if defined(DOSISH) |
2775 | /* avoid getting into infinite loops when shebang | |
2776 | * line contains "Perl" rather than "perl" */ | |
2777 | if (!d) { | |
2778 | for (d = ipathend-4; d >= ipath; --d) { | |
2779 | if ((*d == 'p' || *d == 'P') | |
2780 | && !ibcmp(d, "perl", 4)) | |
2781 | { | |
2782 | break; | |
2783 | } | |
2784 | } | |
2785 | if (d < ipath) | |
2786 | d = Nullch; | |
2787 | } | |
2788 | #endif | |
2789 | } | |
44a8e56a | 2790 | #ifdef ALTERNATE_SHEBANG |
2791 | /* | |
2792 | * If the ALTERNATE_SHEBANG on this system starts with a | |
2793 | * character that can be part of a Perl expression, then if | |
2794 | * we see it but not "perl", we're probably looking at the | |
2795 | * start of Perl code, not a request to hand off to some | |
2796 | * other interpreter. Similarly, if "perl" is there, but | |
2797 | * not in the first 'word' of the line, we assume the line | |
2798 | * contains the start of the Perl program. | |
44a8e56a | 2799 | */ |
2800 | if (d && *s != '#') { | |
774d564b | 2801 | char *c = ipath; |
44a8e56a | 2802 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
2803 | c++; | |
2804 | if (c < d) | |
2805 | d = Nullch; /* "perl" not in first word; ignore */ | |
2806 | else | |
2807 | *s = '#'; /* Don't try to parse shebang line */ | |
2808 | } | |
774d564b | 2809 | #endif /* ALTERNATE_SHEBANG */ |
bf4acbe4 | 2810 | #ifndef MACOS_TRADITIONAL |
748a9306 | 2811 | if (!d && |
44a8e56a | 2812 | *s == '#' && |
774d564b | 2813 | ipathend > ipath && |
3280af22 | 2814 | !PL_minus_c && |
748a9306 | 2815 | !instr(s,"indir") && |
3280af22 | 2816 | instr(PL_origargv[0],"perl")) |
748a9306 | 2817 | { |
9f68db38 | 2818 | char **newargv; |
9f68db38 | 2819 | |
774d564b | 2820 | *ipathend = '\0'; |
2821 | s = ipathend + 1; | |
3280af22 | 2822 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 2823 | s++; |
3280af22 NIS |
2824 | if (s < PL_bufend) { |
2825 | Newz(899,newargv,PL_origargc+3,char*); | |
9f68db38 | 2826 | newargv[1] = s; |
3280af22 | 2827 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
2828 | s++; |
2829 | *s = '\0'; | |
3280af22 | 2830 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
2831 | } |
2832 | else | |
3280af22 | 2833 | newargv = PL_origargv; |
774d564b | 2834 | newargv[0] = ipath; |
b35112e7 | 2835 | PERL_FPU_PRE_EXEC |
b4748376 | 2836 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 2837 | PERL_FPU_POST_EXEC |
cea2e8a9 | 2838 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 2839 | } |
bf4acbe4 | 2840 | #endif |
748a9306 | 2841 | if (d) { |
3280af22 NIS |
2842 | U32 oldpdb = PL_perldb; |
2843 | bool oldn = PL_minus_n; | |
2844 | bool oldp = PL_minus_p; | |
748a9306 LW |
2845 | |
2846 | while (*d && !isSPACE(*d)) d++; | |
bf4acbe4 | 2847 | while (SPACE_OR_TAB(*d)) d++; |
748a9306 LW |
2848 | |
2849 | if (*d++ == '-') { | |
a11ec5a9 | 2850 | bool switches_done = PL_doswitches; |
8cc95fdb | 2851 | do { |
2852 | if (*d == 'M' || *d == 'm') { | |
2853 | char *m = d; | |
2854 | while (*d && !isSPACE(*d)) d++; | |
cea2e8a9 | 2855 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
8cc95fdb | 2856 | (int)(d - m), m); |
2857 | } | |
2858 | d = moreswitches(d); | |
2859 | } while (d); | |
f0b2cf55 YST |
2860 | if (PL_doswitches && !switches_done) { |
2861 | int argc = PL_origargc; | |
2862 | char **argv = PL_origargv; | |
2863 | do { | |
2864 | argc--,argv++; | |
2865 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2866 | init_argv_symbols(argc,argv); | |
2867 | } | |
155aba94 GS |
2868 | if ((PERLDB_LINE && !oldpdb) || |
2869 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) | |
b084f20b | 2870 | /* if we have already added "LINE: while (<>) {", |
2871 | we must not do it again */ | |
748a9306 | 2872 | { |
3280af22 NIS |
2873 | sv_setpv(PL_linestr, ""); |
2874 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); | |
2875 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 2876 | PL_last_lop = PL_last_uni = Nullch; |
3280af22 | 2877 | PL_preambled = FALSE; |
84902520 | 2878 | if (PERLDB_LINE) |
3280af22 | 2879 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
2880 | goto retry; |
2881 | } | |
a11ec5a9 RGS |
2882 | if (PL_doswitches && !switches_done) { |
2883 | int argc = PL_origargc; | |
2884 | char **argv = PL_origargv; | |
2885 | do { | |
2886 | argc--,argv++; | |
2887 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
2888 | init_argv_symbols(argc,argv); | |
2889 | } | |
a0d0e21e | 2890 | } |
79072805 | 2891 | } |
9f68db38 | 2892 | } |
79072805 | 2893 | } |
3280af22 NIS |
2894 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2895 | PL_bufptr = s; | |
2896 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2897 | return yylex(); |
ae986130 | 2898 | } |
378cc40b | 2899 | goto retry; |
4fdae800 | 2900 | case '\r': |
6a27c188 | 2901 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 2902 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 2903 | Perl_croak(aTHX_ |
cc507455 | 2904 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 2905 | #endif |
4fdae800 | 2906 | case ' ': case '\t': case '\f': case 013: |
bf4acbe4 GS |
2907 | #ifdef MACOS_TRADITIONAL |
2908 | case '\312': | |
2909 | #endif | |
378cc40b LW |
2910 | s++; |
2911 | goto retry; | |
378cc40b | 2912 | case '#': |
e929a76b | 2913 | case '\n': |
3280af22 | 2914 | if (PL_lex_state != LEX_NORMAL || (PL_in_eval && !PL_rsfp)) { |
df0deb90 GS |
2915 | if (*s == '#' && s == PL_linestart && PL_in_eval && !PL_rsfp) { |
2916 | /* handle eval qq[#line 1 "foo"\n ...] */ | |
2917 | CopLINE_dec(PL_curcop); | |
2918 | incline(s); | |
2919 | } | |
3280af22 | 2920 | d = PL_bufend; |
a687059c | 2921 | while (s < d && *s != '\n') |
378cc40b | 2922 | s++; |
0f85fab0 | 2923 | if (s < d) |
378cc40b | 2924 | s++; |
78c267c1 | 2925 | else if (s > d) /* Found by Ilya: feed random input to Perl. */ |
a8406387 | 2926 | Perl_croak(aTHX_ "panic: input overflow"); |
463ee0b2 | 2927 | incline(s); |
3280af22 NIS |
2928 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
2929 | PL_bufptr = s; | |
2930 | PL_lex_state = LEX_FORMLINE; | |
cea2e8a9 | 2931 | return yylex(); |
a687059c | 2932 | } |
378cc40b | 2933 | } |
a687059c | 2934 | else { |
378cc40b | 2935 | *s = '\0'; |
3280af22 | 2936 | PL_bufend = s; |
a687059c | 2937 | } |
378cc40b LW |
2938 | goto retry; |
2939 | case '-': | |
79072805 | 2940 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 JH |
2941 | I32 ftst = 0; |
2942 | ||
378cc40b | 2943 | s++; |
3280af22 | 2944 | PL_bufptr = s; |
748a9306 LW |
2945 | tmp = *s++; |
2946 | ||
bf4acbe4 | 2947 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
2948 | s++; |
2949 | ||
2950 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 2951 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
4e553d73 | 2952 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 2953 | "### Saw unary minus before =>, forcing word '%s'\n", s); |
5f80b19c | 2954 | } ); |
748a9306 LW |
2955 | OPERATOR('-'); /* unary minus */ |
2956 | } | |
3280af22 | 2957 | PL_last_uni = PL_oldbufptr; |
748a9306 | 2958 | switch (tmp) { |
e5edeb50 JH |
2959 | case 'r': ftst = OP_FTEREAD; break; |
2960 | case 'w': ftst = OP_FTEWRITE; break; | |
2961 | case 'x': ftst = OP_FTEEXEC; break; | |
2962 | case 'o': ftst = OP_FTEOWNED; break; | |
2963 | case 'R': ftst = OP_FTRREAD; break; | |
2964 | case 'W': ftst = OP_FTRWRITE; break; | |
2965 | case 'X': ftst = OP_FTREXEC; break; | |
2966 | case 'O': ftst = OP_FTROWNED; break; | |
2967 | case 'e': ftst = OP_FTIS; break; | |
2968 | case 'z': ftst = OP_FTZERO; break; | |
2969 | case 's': ftst = OP_FTSIZE; break; | |
2970 | case 'f': ftst = OP_FTFILE; break; | |
2971 | case 'd': ftst = OP_FTDIR; break; | |
2972 | case 'l': ftst = OP_FTLINK; break; | |
2973 | case 'p': ftst = OP_FTPIPE; break; | |
2974 | case 'S': ftst = OP_FTSOCK; break; | |
2975 | case 'u': ftst = OP_FTSUID; break; | |
2976 | case 'g': ftst = OP_FTSGID; break; | |
2977 | case 'k': ftst = OP_FTSVTX; break; | |
2978 | case 'b': ftst = OP_FTBLK; break; | |
2979 | case 'c': ftst = OP_FTCHR; break; | |
2980 | case 't': ftst = OP_FTTTY; break; | |
2981 | case 'T': ftst = OP_FTTEXT; break; | |
2982 | case 'B': ftst = OP_FTBINARY; break; | |
2983 | case 'M': case 'A': case 'C': | |
2984 | gv_fetchpv("\024",TRUE, SVt_PV); | |
2985 | switch (tmp) { | |
2986 | case 'M': ftst = OP_FTMTIME; break; | |
2987 | case 'A': ftst = OP_FTATIME; break; | |
2988 | case 'C': ftst = OP_FTCTIME; break; | |
2989 | default: break; | |
2990 | } | |
2991 | break; | |
378cc40b | 2992 | default: |
378cc40b LW |
2993 | break; |
2994 | } | |
e5edeb50 | 2995 | if (ftst) { |
eb160463 | 2996 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 2997 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
0844c848 | 2998 | "### Saw file test %c\n", (int)ftst); |
5f80b19c | 2999 | } ); |
e5edeb50 JH |
3000 | FTST(ftst); |
3001 | } | |
3002 | else { | |
3003 | /* Assume it was a minus followed by a one-letter named | |
3004 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 3005 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 RGS |
3006 | "### '-%c' looked like a file test but was not\n", |
3007 | tmp); | |
5f80b19c | 3008 | } ); |
3cf7b4c4 | 3009 | s = --PL_bufptr; |
e5edeb50 | 3010 | } |
378cc40b | 3011 | } |
a687059c LW |
3012 | tmp = *s++; |
3013 | if (*s == tmp) { | |
3014 | s++; | |
3280af22 | 3015 | if (PL_expect == XOPERATOR) |
79072805 LW |
3016 | TERM(POSTDEC); |
3017 | else | |
3018 | OPERATOR(PREDEC); | |
3019 | } | |
3020 | else if (*s == '>') { | |
3021 | s++; | |
3022 | s = skipspace(s); | |
7e2040f0 | 3023 | if (isIDFIRST_lazy_if(s,UTF)) { |
a0d0e21e | 3024 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); |
463ee0b2 | 3025 | TOKEN(ARROW); |
79072805 | 3026 | } |
748a9306 LW |
3027 | else if (*s == '$') |
3028 | OPERATOR(ARROW); | |
463ee0b2 | 3029 | else |
748a9306 | 3030 | TERM(ARROW); |
a687059c | 3031 | } |
3280af22 | 3032 | if (PL_expect == XOPERATOR) |
79072805 LW |
3033 | Aop(OP_SUBTRACT); |
3034 | else { | |
3280af22 | 3035 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3036 | check_uni(); |
79072805 | 3037 | OPERATOR('-'); /* unary minus */ |
2f3197b3 | 3038 | } |
79072805 | 3039 | |
378cc40b | 3040 | case '+': |
a687059c LW |
3041 | tmp = *s++; |
3042 | if (*s == tmp) { | |
378cc40b | 3043 | s++; |
3280af22 | 3044 | if (PL_expect == XOPERATOR) |
79072805 LW |
3045 | TERM(POSTINC); |
3046 | else | |
3047 | OPERATOR(PREINC); | |
378cc40b | 3048 | } |
3280af22 | 3049 | if (PL_expect == XOPERATOR) |
79072805 LW |
3050 | Aop(OP_ADD); |
3051 | else { | |
3280af22 | 3052 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) |
2f3197b3 | 3053 | check_uni(); |
a687059c | 3054 | OPERATOR('+'); |
2f3197b3 | 3055 | } |
a687059c | 3056 | |
378cc40b | 3057 | case '*': |
3280af22 NIS |
3058 | if (PL_expect != XOPERATOR) { |
3059 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
3060 | PL_expect = XOPERATOR; | |
3061 | force_ident(PL_tokenbuf, '*'); | |
3062 | if (!*PL_tokenbuf) | |
a0d0e21e | 3063 | PREREF('*'); |
79072805 | 3064 | TERM('*'); |
a687059c | 3065 | } |
79072805 LW |
3066 | s++; |
3067 | if (*s == '*') { | |
a687059c | 3068 | s++; |
79072805 | 3069 | PWop(OP_POW); |
a687059c | 3070 | } |
79072805 LW |
3071 | Mop(OP_MULTIPLY); |
3072 | ||
378cc40b | 3073 | case '%': |
3280af22 | 3074 | if (PL_expect == XOPERATOR) { |
bbce6d69 | 3075 | ++s; |
3076 | Mop(OP_MODULO); | |
a687059c | 3077 | } |
3280af22 NIS |
3078 | PL_tokenbuf[0] = '%'; |
3079 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, TRUE); | |
3080 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3081 | PREREF('%'); |
a687059c | 3082 | } |
3280af22 | 3083 | PL_pending_ident = '%'; |
bbce6d69 | 3084 | TERM('%'); |
a687059c | 3085 | |
378cc40b | 3086 | case '^': |
79072805 | 3087 | s++; |
a0d0e21e | 3088 | BOop(OP_BIT_XOR); |
79072805 | 3089 | case '[': |
3280af22 | 3090 | PL_lex_brackets++; |
79072805 | 3091 | /* FALL THROUGH */ |
378cc40b | 3092 | case '~': |
378cc40b | 3093 | case ',': |
378cc40b LW |
3094 | tmp = *s++; |
3095 | OPERATOR(tmp); | |
a0d0e21e LW |
3096 | case ':': |
3097 | if (s[1] == ':') { | |
3098 | len = 0; | |
3099 | goto just_a_word; | |
3100 | } | |
3101 | s++; | |
09bef843 SB |
3102 | switch (PL_expect) { |
3103 | OP *attrs; | |
3104 | case XOPERATOR: | |
3105 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
3106 | break; | |
3107 | PL_bufptr = s; /* update in case we back off */ | |
3108 | goto grabattrs; | |
3109 | case XATTRBLOCK: | |
3110 | PL_expect = XBLOCK; | |
3111 | goto grabattrs; | |
3112 | case XATTRTERM: | |
3113 | PL_expect = XTERMBLOCK; | |
3114 | grabattrs: | |
3115 | s = skipspace(s); | |
3116 | attrs = Nullop; | |
7e2040f0 | 3117 | while (isIDFIRST_lazy_if(s,UTF)) { |
09bef843 | 3118 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
f9829d6b GS |
3119 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len))) { |
3120 | if (tmp < 0) tmp = -tmp; | |
3121 | switch (tmp) { | |
3122 | case KEY_or: | |
3123 | case KEY_and: | |
c963b151 | 3124 | case KEY_err: |
f9829d6b GS |
3125 | case KEY_for: |
3126 | case KEY_unless: | |
3127 | case KEY_if: | |
3128 | case KEY_while: | |
3129 | case KEY_until: | |
3130 | goto got_attrs; | |
3131 | default: | |
3132 | break; | |
3133 | } | |
3134 | } | |
09bef843 SB |
3135 | if (*d == '(') { |
3136 | d = scan_str(d,TRUE,TRUE); | |
3137 | if (!d) { | |
09bef843 SB |
3138 | /* MUST advance bufptr here to avoid bogus |
3139 | "at end of line" context messages from yyerror(). | |
3140 | */ | |
3141 | PL_bufptr = s + len; | |
3142 | yyerror("Unterminated attribute parameter in attribute list"); | |
3143 | if (attrs) | |
3144 | op_free(attrs); | |
bbf60fe6 | 3145 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
3146 | } |
3147 | } | |
3148 | if (PL_lex_stuff) { | |
3149 | SV *sv = newSVpvn(s, len); | |
3150 | sv_catsv(sv, PL_lex_stuff); | |
3151 | attrs = append_elem(OP_LIST, attrs, | |
3152 | newSVOP(OP_CONST, 0, sv)); | |
3153 | SvREFCNT_dec(PL_lex_stuff); | |
3154 | PL_lex_stuff = Nullsv; | |
3155 | } | |
3156 | else { | |
371fce9b DM |
3157 | if (len == 6 && strnEQ(s, "unique", len)) { |
3158 | if (PL_in_my == KEY_our) | |
3159 | #ifdef USE_ITHREADS | |
3160 | GvUNIQUE_on(cGVOPx_gv(yylval.opval)); | |
3161 | #else | |
3162 | ; /* skip to avoid loading attributes.pm */ | |
3163 | #endif | |
3164 | else | |
3165 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); | |
3166 | } | |
3167 | ||
d3cea301 SB |
3168 | /* NOTE: any CV attrs applied here need to be part of |
3169 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
371fce9b | 3170 | else if (!PL_in_my && len == 6 && strnEQ(s, "lvalue", len)) |
78f9721b SM |
3171 | CvLVALUE_on(PL_compcv); |
3172 | else if (!PL_in_my && len == 6 && strnEQ(s, "locked", len)) | |
3173 | CvLOCKED_on(PL_compcv); | |
3174 | else if (!PL_in_my && len == 6 && strnEQ(s, "method", len)) | |
3175 | CvMETHOD_on(PL_compcv); | |
06492da6 SF |
3176 | else if (!PL_in_my && len == 9 && strnEQ(s, "assertion", len)) |
3177 | CvASSERTION_on(PL_compcv); | |
78f9721b SM |
3178 | /* After we've set the flags, it could be argued that |
3179 | we don't need to do the attributes.pm-based setting | |
3180 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
3181 | flags. To experiment with that, uncomment the |
3182 | following "else". (Note that's already been | |
3183 | uncommented. That keeps the above-applied built-in | |
3184 | attributes from being intercepted (and possibly | |
3185 | rejected) by a package's attribute routines, but is | |
3186 | justified by the performance win for the common case | |
3187 | of applying only built-in attributes.) */ | |
0256094b | 3188 | else |
78f9721b SM |
3189 | attrs = append_elem(OP_LIST, attrs, |
3190 | newSVOP(OP_CONST, 0, | |
3191 | newSVpvn(s, len))); | |
09bef843 SB |
3192 | } |
3193 | s = skipspace(d); | |
0120eecf | 3194 | if (*s == ':' && s[1] != ':') |
09bef843 | 3195 | s = skipspace(s+1); |
0120eecf GS |
3196 | else if (s == d) |
3197 | break; /* require real whitespace or :'s */ | |
09bef843 | 3198 | } |
f9829d6b | 3199 | tmp = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ |
8e7ae056 | 3200 | if (*s != ';' && *s != '}' && *s != tmp && (tmp != '=' || *s != ')')) { |
09bef843 SB |
3201 | char q = ((*s == '\'') ? '"' : '\''); |
3202 | /* If here for an expression, and parsed no attrs, back off. */ | |
3203 | if (tmp == '=' && !attrs) { | |
3204 | s = PL_bufptr; | |
3205 | break; | |
3206 | } | |
3207 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
3208 | context messages from yyerror(). | |
3209 | */ | |
3210 | PL_bufptr = s; | |
3211 | if (!*s) | |
3212 | yyerror("Unterminated attribute list"); | |
3213 | else | |
3214 | yyerror(Perl_form(aTHX_ "Invalid separator character %c%c%c in attribute list", | |
3215 | q, *s, q)); | |
3216 | if (attrs) | |
3217 | op_free(attrs); | |
3218 | OPERATOR(':'); | |
3219 | } | |
f9829d6b | 3220 | got_attrs: |
09bef843 SB |
3221 | if (attrs) { |
3222 | PL_nextval[PL_nexttoke].opval = attrs; | |
3223 | force_next(THING); | |
3224 | } | |
3225 | TOKEN(COLONATTR); | |
3226 | } | |
a0d0e21e | 3227 | OPERATOR(':'); |
8990e307 LW |
3228 | case '(': |
3229 | s++; | |
3280af22 NIS |
3230 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
3231 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 3232 | else |
3280af22 | 3233 | PL_expect = XTERM; |
4a202259 | 3234 | s = skipspace(s); |
a0d0e21e | 3235 | TOKEN('('); |
378cc40b | 3236 | case ';': |
f4dd75d9 | 3237 | CLINE; |
378cc40b LW |
3238 | tmp = *s++; |
3239 | OPERATOR(tmp); | |
3240 | case ')': | |
378cc40b | 3241 | tmp = *s++; |
16d20bd9 AD |
3242 | s = skipspace(s); |
3243 | if (*s == '{') | |
3244 | PREBLOCK(tmp); | |
378cc40b | 3245 | TERM(tmp); |
79072805 LW |
3246 | case ']': |
3247 | s++; | |
3280af22 | 3248 | if (PL_lex_brackets <= 0) |
d98d5fff | 3249 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 3250 | else |
3280af22 NIS |
3251 | --PL_lex_brackets; |
3252 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3253 | if (PL_lex_brackets == 0) { | |
a0d0e21e | 3254 | if (*s != '[' && *s != '{' && (*s != '-' || s[1] != '>')) |
3280af22 | 3255 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3256 | } |
3257 | } | |
4633a7c4 | 3258 | TERM(']'); |
79072805 LW |
3259 | case '{': |
3260 | leftbracket: | |
79072805 | 3261 | s++; |
3280af22 | 3262 | if (PL_lex_brackets > 100) { |
8edd5f42 | 3263 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 3264 | } |
3280af22 | 3265 | switch (PL_expect) { |
a0d0e21e | 3266 | case XTERM: |
3280af22 | 3267 | if (PL_lex_formbrack) { |
a0d0e21e LW |
3268 | s--; |
3269 | PRETERMBLOCK(DO); | |
3270 | } | |
3280af22 NIS |
3271 | if (PL_oldoldbufptr == PL_last_lop) |
3272 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3273 | else |
3280af22 | 3274 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
79072805 | 3275 | OPERATOR(HASHBRACK); |
a0d0e21e | 3276 | case XOPERATOR: |
bf4acbe4 | 3277 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 3278 | s++; |
44a8e56a | 3279 | d = s; |
3280af22 NIS |
3280 | PL_tokenbuf[0] = '\0'; |
3281 | if (d < PL_bufend && *d == '-') { | |
3282 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 3283 | d++; |
bf4acbe4 | 3284 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 3285 | d++; |
3286 | } | |
7e2040f0 | 3287 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 3288 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 3289 | FALSE, &len); |
bf4acbe4 | 3290 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
3291 | d++; |
3292 | if (*d == '}') { | |
3280af22 | 3293 | char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 3294 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
3295 | if (minus) | |
3296 | force_next('-'); | |
748a9306 LW |
3297 | } |
3298 | } | |
3299 | /* FALL THROUGH */ | |
09bef843 | 3300 | case XATTRBLOCK: |
748a9306 | 3301 | case XBLOCK: |
3280af22 NIS |
3302 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
3303 | PL_expect = XSTATE; | |
a0d0e21e | 3304 | break; |
09bef843 | 3305 | case XATTRTERM: |
a0d0e21e | 3306 | case XTERMBLOCK: |
3280af22 NIS |
3307 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
3308 | PL_expect = XSTATE; | |
a0d0e21e LW |
3309 | break; |
3310 | default: { | |
3311 | char *t; | |
3280af22 NIS |
3312 | if (PL_oldoldbufptr == PL_last_lop) |
3313 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 3314 | else |
3280af22 | 3315 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
a0d0e21e | 3316 | s = skipspace(s); |
8452ff4b SB |
3317 | if (*s == '}') { |
3318 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
3319 | PL_expect = XTERM; | |
3320 | /* This hack is to get the ${} in the message. */ | |
3321 | PL_bufptr = s+1; | |
3322 | yyerror("syntax error"); | |
3323 | break; | |
3324 | } | |
a0d0e21e | 3325 | OPERATOR(HASHBRACK); |
8452ff4b | 3326 | } |
b8a4b1be GS |
3327 | /* This hack serves to disambiguate a pair of curlies |
3328 | * as being a block or an anon hash. Normally, expectation | |
3329 | * determines that, but in cases where we're not in a | |
3330 | * position to expect anything in particular (like inside | |
3331 | * eval"") we have to resolve the ambiguity. This code | |
3332 | * covers the case where the first term in the curlies is a | |
3333 | * quoted string. Most other cases need to be explicitly | |
3334 | * disambiguated by prepending a `+' before the opening | |
3335 | * curly in order to force resolution as an anon hash. | |
3336 | * | |
3337 | * XXX should probably propagate the outer expectation | |
3338 | * into eval"" to rely less on this hack, but that could | |
3339 | * potentially break current behavior of eval"". | |
3340 | * GSAR 97-07-21 | |
3341 | */ | |
3342 | t = s; | |
3343 | if (*s == '\'' || *s == '"' || *s == '`') { | |
3344 | /* common case: get past first string, handling escapes */ | |
3280af22 | 3345 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
3346 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
3347 | t++; | |
3348 | t++; | |
a0d0e21e | 3349 | } |
b8a4b1be | 3350 | else if (*s == 'q') { |
3280af22 | 3351 | if (++t < PL_bufend |
b8a4b1be | 3352 | && (!isALNUM(*t) |
3280af22 | 3353 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
3354 | && !isALNUM(*t)))) |
3355 | { | |
abc667d1 | 3356 | /* skip q//-like construct */ |
b8a4b1be GS |
3357 | char *tmps; |
3358 | char open, close, term; | |
3359 | I32 brackets = 1; | |
3360 | ||
3280af22 | 3361 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 3362 | t++; |
abc667d1 DM |
3363 | /* check for q => */ |
3364 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
3365 | OPERATOR(HASHBRACK); | |
3366 | } | |
b8a4b1be GS |
3367 | term = *t; |
3368 | open = term; | |
3369 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
3370 | term = tmps[5]; | |
3371 | close = term; | |
3372 | if (open == close) | |
3280af22 NIS |
3373 | for (t++; t < PL_bufend; t++) { |
3374 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 3375 | t++; |
6d07e5e9 | 3376 | else if (*t == open) |
b8a4b1be GS |
3377 | break; |
3378 | } | |
abc667d1 | 3379 | else { |
3280af22 NIS |
3380 | for (t++; t < PL_bufend; t++) { |
3381 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 3382 | t++; |
6d07e5e9 | 3383 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
3384 | break; |
3385 | else if (*t == open) | |
3386 | brackets++; | |
3387 | } | |
abc667d1 DM |
3388 | } |
3389 | t++; | |
b8a4b1be | 3390 | } |
abc667d1 DM |
3391 | else |
3392 | /* skip plain q word */ | |
3393 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
3394 | t += UTF8SKIP(t); | |
a0d0e21e | 3395 | } |
7e2040f0 | 3396 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 3397 | t += UTF8SKIP(t); |
7e2040f0 | 3398 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 3399 | t += UTF8SKIP(t); |
a0d0e21e | 3400 | } |
3280af22 | 3401 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 3402 | t++; |
b8a4b1be GS |
3403 | /* if comma follows first term, call it an anon hash */ |
3404 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 3405 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 3406 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 3407 | OPERATOR(HASHBRACK); |
3280af22 | 3408 | if (PL_expect == XREF) |
4e4e412b | 3409 | PL_expect = XTERM; |
a0d0e21e | 3410 | else { |
3280af22 NIS |
3411 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
3412 | PL_expect = XSTATE; | |
a0d0e21e | 3413 | } |
8990e307 | 3414 | } |
a0d0e21e | 3415 | break; |
463ee0b2 | 3416 | } |
57843af0 | 3417 | yylval.ival = CopLINE(PL_curcop); |
79072805 | 3418 | if (isSPACE(*s) || *s == '#') |
3280af22 | 3419 | PL_copline = NOLINE; /* invalidate current command line number */ |
79072805 | 3420 | TOKEN('{'); |
378cc40b | 3421 | case '}': |
79072805 LW |
3422 | rightbracket: |
3423 | s++; | |
3280af22 | 3424 | if (PL_lex_brackets <= 0) |
d98d5fff | 3425 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 3426 | else |
3280af22 | 3427 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
c2e66d9e | 3428 | if (PL_lex_brackets < PL_lex_formbrack && PL_lex_state != LEX_INTERPNORMAL) |
3280af22 NIS |
3429 | PL_lex_formbrack = 0; |
3430 | if (PL_lex_state == LEX_INTERPNORMAL) { | |
3431 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
3432 | if (PL_expect & XFAKEBRACK) { |
3433 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
3434 | PL_lex_state = LEX_INTERPEND; |
3435 | PL_bufptr = s; | |
cea2e8a9 | 3436 | return yylex(); /* ignore fake brackets */ |
79072805 | 3437 | } |
fa83b5b6 | 3438 | if (*s == '-' && s[1] == '>') |
3280af22 | 3439 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 3440 | else if (*s != '[' && *s != '{') |
3280af22 | 3441 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
3442 | } |
3443 | } | |
9059aa12 LW |
3444 | if (PL_expect & XFAKEBRACK) { |
3445 | PL_expect &= XENUMMASK; | |
3280af22 | 3446 | PL_bufptr = s; |
cea2e8a9 | 3447 | return yylex(); /* ignore fake brackets */ |
748a9306 | 3448 | } |
79072805 LW |
3449 | force_next('}'); |
3450 | TOKEN(';'); | |
378cc40b LW |
3451 | case '&': |
3452 | s++; | |
3453 | tmp = *s++; | |
3454 | if (tmp == '&') | |
a0d0e21e | 3455 | AOPERATOR(ANDAND); |
378cc40b | 3456 | s--; |
3280af22 | 3457 | if (PL_expect == XOPERATOR) { |
7e2040f0 GS |
3458 | if (ckWARN(WARN_SEMICOLON) |
3459 | && isIDFIRST_lazy_if(s,UTF) && PL_bufptr == PL_linestart) | |
3460 | { | |
57843af0 | 3461 | CopLINE_dec(PL_curcop); |
9014280d | 3462 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 3463 | CopLINE_inc(PL_curcop); |
463ee0b2 | 3464 | } |
79072805 | 3465 | BAop(OP_BIT_AND); |
463ee0b2 | 3466 | } |
79072805 | 3467 | |
3280af22 NIS |
3468 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); |
3469 | if (*PL_tokenbuf) { | |
3470 | PL_expect = XOPERATOR; | |
3471 | force_ident(PL_tokenbuf, '&'); | |
463ee0b2 | 3472 | } |
79072805 LW |
3473 | else |
3474 | PREREF('&'); | |
c07a80fd | 3475 | yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
3476 | TERM('&'); |
3477 | ||
378cc40b LW |
3478 | case '|': |
3479 | s++; | |
3480 | tmp = *s++; | |
3481 | if (tmp == '|') | |
a0d0e21e | 3482 | AOPERATOR(OROR); |
378cc40b | 3483 | s--; |
79072805 | 3484 | BOop(OP_BIT_OR); |
378cc40b LW |
3485 | case '=': |
3486 | s++; | |
3487 | tmp = *s++; | |
3488 | if (tmp == '=') | |
79072805 LW |
3489 | Eop(OP_EQ); |
3490 | if (tmp == '>') | |
3491 | OPERATOR(','); | |
378cc40b | 3492 | if (tmp == '~') |
79072805 | 3493 | PMop(OP_MATCH); |
599cee73 | 3494 | if (ckWARN(WARN_SYNTAX) && tmp && isSPACE(*s) && strchr("+-*/%.^&|<",tmp)) |
9014280d | 3495 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Reversed %c= operator",(int)tmp); |
378cc40b | 3496 | s--; |
3280af22 NIS |
3497 | if (PL_expect == XSTATE && isALPHA(tmp) && |
3498 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
748a9306 | 3499 | { |
3280af22 NIS |
3500 | if (PL_in_eval && !PL_rsfp) { |
3501 | d = PL_bufend; | |
a5f75d66 AD |
3502 | while (s < d) { |
3503 | if (*s++ == '\n') { | |
3504 | incline(s); | |
3505 | if (strnEQ(s,"=cut",4)) { | |
3506 | s = strchr(s,'\n'); | |
3507 | if (s) | |
3508 | s++; | |
3509 | else | |
3510 | s = d; | |
3511 | incline(s); | |
3512 | goto retry; | |
3513 | } | |
3514 | } | |
3515 | } | |
3516 | goto retry; | |
3517 | } | |
3280af22 NIS |
3518 | s = PL_bufend; |
3519 | PL_doextract = TRUE; | |
a0d0e21e LW |
3520 | goto retry; |
3521 | } | |
3280af22 | 3522 | if (PL_lex_brackets < PL_lex_formbrack) { |
a0d0e21e | 3523 | char *t; |
51882d45 | 3524 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 3525 | for (t = s; SPACE_OR_TAB(*t); t++) ; |
51882d45 | 3526 | #else |
bf4acbe4 | 3527 | for (t = s; SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 3528 | #endif |
a0d0e21e LW |
3529 | if (*t == '\n' || *t == '#') { |
3530 | s--; | |
3280af22 | 3531 | PL_expect = XBLOCK; |
a0d0e21e LW |
3532 | goto leftbracket; |
3533 | } | |
79072805 | 3534 | } |
a0d0e21e LW |
3535 | yylval.ival = 0; |
3536 | OPERATOR(ASSIGNOP); | |
378cc40b LW |
3537 | case '!': |
3538 | s++; | |
3539 | tmp = *s++; | |
984200d0 | 3540 | if (tmp == '=') { |
decca21c YST |
3541 | /* was this !=~ where !~ was meant? |
3542 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
3543 | ||
984200d0 YST |
3544 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { |
3545 | char *t = s+1; | |
3546 | ||
3547 | while (t < PL_bufend && isSPACE(*t)) | |
3548 | ++t; | |
3549 | ||
decca21c YST |
3550 | if (*t == '/' || *t == '?' || |
3551 | ((*t == 'm' || *t == 's' || *t == 'y') && !isALNUM(t[1])) || | |
3552 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
984200d0 YST |
3553 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
3554 | "!=~ should be !~"); | |
3555 | } | |
79072805 | 3556 | Eop(OP_NE); |
984200d0 | 3557 | } |
378cc40b | 3558 | if (tmp == '~') |
79072805 | 3559 | PMop(OP_NOT); |
378cc40b LW |
3560 | s--; |
3561 | OPERATOR('!'); | |
3562 | case '<': | |
3280af22 | 3563 | if (PL_expect != XOPERATOR) { |
93a17b20 | 3564 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 3565 | check_uni(); |
79072805 LW |
3566 | if (s[1] == '<') |
3567 | s = scan_heredoc(s); | |
3568 | else | |
3569 | s = scan_inputsymbol(s); | |
3570 | TERM(sublex_start()); | |
378cc40b LW |
3571 | } |
3572 | s++; | |
3573 | tmp = *s++; | |
3574 | if (tmp == '<') | |
79072805 | 3575 | SHop(OP_LEFT_SHIFT); |
395c3793 LW |
3576 | if (tmp == '=') { |
3577 | tmp = *s++; | |
3578 | if (tmp == '>') | |
79072805 | 3579 | Eop(OP_NCMP); |
395c3793 | 3580 | s--; |
79072805 | 3581 | Rop(OP_LE); |
395c3793 | 3582 | } |
378cc40b | 3583 | s--; |
79072805 | 3584 | Rop(OP_LT); |
378cc40b LW |
3585 | case '>': |
3586 | s++; | |
3587 | tmp = *s++; | |
3588 | if (tmp == '>') | |
79072805 | 3589 | SHop(OP_RIGHT_SHIFT); |
378cc40b | 3590 | if (tmp == '=') |
79072805 | 3591 | Rop(OP_GE); |
378cc40b | 3592 | s--; |
79072805 | 3593 | Rop(OP_GT); |
378cc40b LW |
3594 | |
3595 | case '$': | |
bbce6d69 | 3596 | CLINE; |
3597 | ||
3280af22 NIS |
3598 | if (PL_expect == XOPERATOR) { |
3599 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3600 | PL_expect = XTERM; | |
a0d0e21e | 3601 | depcom(); |
bbf60fe6 | 3602 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3603 | } |
8990e307 | 3604 | } |
a0d0e21e | 3605 | |
7e2040f0 | 3606 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-", s[2]))) { |
3280af22 | 3607 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
3608 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
3609 | sizeof PL_tokenbuf - 1, FALSE); | |
3610 | if (PL_expect == XOPERATOR) | |
3611 | no_op("Array length", s); | |
3280af22 | 3612 | if (!PL_tokenbuf[1]) |
a0d0e21e | 3613 | PREREF(DOLSHARP); |
3280af22 NIS |
3614 | PL_expect = XOPERATOR; |
3615 | PL_pending_ident = '#'; | |
463ee0b2 | 3616 | TOKEN(DOLSHARP); |
79072805 | 3617 | } |
bbce6d69 | 3618 | |
3280af22 | 3619 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
3620 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
3621 | sizeof PL_tokenbuf - 1, FALSE); | |
3622 | if (PL_expect == XOPERATOR) | |
3623 | no_op("Scalar", s); | |
3280af22 NIS |
3624 | if (!PL_tokenbuf[1]) { |
3625 | if (s == PL_bufend) | |
bbce6d69 | 3626 | yyerror("Final $ should be \\$ or $name"); |
3627 | PREREF('$'); | |
8990e307 | 3628 | } |
a0d0e21e | 3629 | |
bbce6d69 | 3630 | /* This kludge not intended to be bulletproof. */ |
3280af22 | 3631 | if (PL_tokenbuf[1] == '[' && !PL_tokenbuf[2]) { |
bbce6d69 | 3632 | yylval.opval = newSVOP(OP_CONST, 0, |
b448e4fe | 3633 | newSViv(PL_compiling.cop_arybase)); |
bbce6d69 | 3634 | yylval.opval->op_private = OPpCONST_ARYBASE; |
3635 | TERM(THING); | |
3636 | } | |
3637 | ||
ff68c719 | 3638 | d = s; |
69d2bceb | 3639 | tmp = (I32)*s; |
3280af22 | 3640 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3641 | s = skipspace(s); |
3642 | ||
3280af22 | 3643 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3644 | char *t; |
3645 | if (*s == '[') { | |
3280af22 | 3646 | PL_tokenbuf[0] = '@'; |
599cee73 | 3647 | if (ckWARN(WARN_SYNTAX)) { |
bbce6d69 | 3648 | for(t = s + 1; |
7e2040f0 | 3649 | isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$'; |
bbce6d69 | 3650 | t++) ; |
a0d0e21e | 3651 | if (*t++ == ',') { |
3280af22 NIS |
3652 | PL_bufptr = skipspace(PL_bufptr); |
3653 | while (t < PL_bufend && *t != ']') | |
bbce6d69 | 3654 | t++; |
9014280d | 3655 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 PM |
3656 | "Multidimensional syntax %.*s not supported", |
3657 | (t - PL_bufptr) + 1, PL_bufptr); | |
a0d0e21e LW |
3658 | } |
3659 | } | |
bbce6d69 | 3660 | } |
3661 | else if (*s == '{') { | |
3280af22 | 3662 | PL_tokenbuf[0] = '%'; |
599cee73 | 3663 | if (ckWARN(WARN_SYNTAX) && strEQ(PL_tokenbuf+1, "SIG") && |
bbce6d69 | 3664 | (t = strchr(s, '}')) && (t = strchr(t, '='))) |
3665 | { | |
3280af22 | 3666 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3667 | STRLEN len; |
3668 | for (t++; isSPACE(*t); t++) ; | |
7e2040f0 | 3669 | if (isIDFIRST_lazy_if(t,UTF)) { |
8903cb82 | 3670 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, &len); |
59a6d928 | 3671 | for (; isSPACE(*t); t++) ; |
864dbfa3 | 3672 | if (*t == ';' && get_cv(tmpbuf, FALSE)) |
9014280d | 3673 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3674 | "You need to quote \"%s\"", tmpbuf); |
748a9306 | 3675 | } |
93a17b20 LW |
3676 | } |
3677 | } | |
2f3197b3 | 3678 | } |
bbce6d69 | 3679 | |
3280af22 | 3680 | PL_expect = XOPERATOR; |
69d2bceb | 3681 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { |
3280af22 NIS |
3682 | bool islop = (PL_last_lop == PL_oldoldbufptr); |
3683 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
3684 | PL_expect = XOPERATOR; | |
bbce6d69 | 3685 | else if (strchr("$@\"'`q", *s)) |
3280af22 | 3686 | PL_expect = XTERM; /* e.g. print $fh "foo" */ |
7e2040f0 | 3687 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) |
3280af22 | 3688 | PL_expect = XTERM; /* e.g. print $fh &sub */ |
7e2040f0 | 3689 | else if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 3690 | char tmpbuf[sizeof PL_tokenbuf]; |
8903cb82 | 3691 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
155aba94 | 3692 | if ((tmp = keyword(tmpbuf, len))) { |
84902520 TB |
3693 | /* binary operators exclude handle interpretations */ |
3694 | switch (tmp) { | |
3695 | case -KEY_x: | |
3696 | case -KEY_eq: | |
3697 | case -KEY_ne: | |
3698 | case -KEY_gt: | |
3699 | case -KEY_lt: | |
3700 | case -KEY_ge: | |
3701 | case -KEY_le: | |
3702 | case -KEY_cmp: | |
3703 | break; | |
3704 | default: | |
3280af22 | 3705 | PL_expect = XTERM; /* e.g. print $fh length() */ |
84902520 TB |
3706 | break; |
3707 | } | |
3708 | } | |
68dc0745 | 3709 | else { |
8a8635f0 | 3710 | PL_expect = XTERM; /* e.g. print $fh subr() */ |
93a17b20 | 3711 | } |
93a17b20 | 3712 | } |
bbce6d69 | 3713 | else if (isDIGIT(*s)) |
3280af22 | 3714 | PL_expect = XTERM; /* e.g. print $fh 3 */ |
bbce6d69 | 3715 | else if (*s == '.' && isDIGIT(s[1])) |
3280af22 | 3716 | PL_expect = XTERM; /* e.g. print $fh .3 */ |
c963b151 BD |
3717 | else if (strchr("?-+", *s) && !isSPACE(s[1]) && s[1] != '=') |
3718 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
7ce6e6b9 RGS |
3719 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' && s[1] != '/') |
3720 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
3721 | XXX except DORDOR operator */ | |
e0587a03 | 3722 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) && s[2] != '=') |
3280af22 | 3723 | PL_expect = XTERM; /* print $fh <<"EOF" */ |
bbce6d69 | 3724 | } |
3280af22 | 3725 | PL_pending_ident = '$'; |
79072805 | 3726 | TOKEN('$'); |
378cc40b LW |
3727 | |
3728 | case '@': | |
3280af22 | 3729 | if (PL_expect == XOPERATOR) |
bbce6d69 | 3730 | no_op("Array", s); |
3280af22 NIS |
3731 | PL_tokenbuf[0] = '@'; |
3732 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
3733 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 3734 | PREREF('@'); |
3735 | } | |
3280af22 | 3736 | if (PL_lex_state == LEX_NORMAL) |
ff68c719 | 3737 | s = skipspace(s); |
3280af22 | 3738 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 3739 | if (*s == '{') |
3280af22 | 3740 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
3741 | |
3742 | /* Warn about @ where they meant $. */ | |
599cee73 | 3743 | if (ckWARN(WARN_SYNTAX)) { |
a0d0e21e LW |
3744 | if (*s == '[' || *s == '{') { |
3745 | char *t = s + 1; | |
7e2040f0 | 3746 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
a0d0e21e LW |
3747 | t++; |
3748 | if (*t == '}' || *t == ']') { | |
3749 | t++; | |
3280af22 | 3750 | PL_bufptr = skipspace(PL_bufptr); |
9014280d | 3751 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
599cee73 | 3752 | "Scalar value %.*s better written as $%.*s", |
3280af22 | 3753 | t-PL_bufptr, PL_bufptr, t-PL_bufptr-1, PL_bufptr+1); |
a0d0e21e | 3754 | } |
93a17b20 LW |
3755 | } |
3756 | } | |
463ee0b2 | 3757 | } |
3280af22 | 3758 | PL_pending_ident = '@'; |
79072805 | 3759 | TERM('@'); |
378cc40b | 3760 | |
c963b151 | 3761 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 RGS |
3762 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
3763 | s += 2; | |
3764 | AOPERATOR(DORDOR); | |
3765 | } | |
c963b151 BD |
3766 | case '?': /* may either be conditional or pattern */ |
3767 | if(PL_expect == XOPERATOR) { | |
3768 | tmp = *s++; | |
3769 | if(tmp == '?') { | |
3770 | OPERATOR('?'); | |
3771 | } | |
3772 | else { | |
3773 | tmp = *s++; | |
3774 | if(tmp == '/') { | |
3775 | /* A // operator. */ | |
3776 | AOPERATOR(DORDOR); | |
3777 | } | |
3778 | else { | |
3779 | s--; | |
3780 | Mop(OP_DIVIDE); | |
3781 | } | |
3782 | } | |
3783 | } | |
3784 | else { | |
3785 | /* Disable warning on "study /blah/" */ | |
3786 | if (PL_oldoldbufptr == PL_last_uni | |
3787 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
3788 | || memNE(PL_last_uni, "study", 5) | |
3789 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
3790 | )) | |
3791 | check_uni(); | |
3792 | s = scan_pat(s,OP_MATCH); | |
3793 | TERM(sublex_start()); | |
3794 | } | |
378cc40b LW |
3795 | |
3796 | case '.': | |
51882d45 GS |
3797 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
3798 | #ifdef PERL_STRICT_CR | |
3799 | && s[1] == '\n' | |
3800 | #else | |
3801 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
3802 | #endif | |
3803 | && (s == PL_linestart || s[-1] == '\n') ) | |
3804 | { | |
3280af22 NIS |
3805 | PL_lex_formbrack = 0; |
3806 | PL_expect = XSTATE; | |
79072805 LW |
3807 | goto rightbracket; |
3808 | } | |
3280af22 | 3809 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
378cc40b | 3810 | tmp = *s++; |
a687059c LW |
3811 | if (*s == tmp) { |
3812 | s++; | |
2f3197b3 LW |
3813 | if (*s == tmp) { |
3814 | s++; | |
79072805 | 3815 | yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
3816 | } |
3817 | else | |
79072805 | 3818 | yylval.ival = 0; |
378cc40b | 3819 | OPERATOR(DOTDOT); |
a687059c | 3820 | } |
3280af22 | 3821 | if (PL_expect != XOPERATOR) |
2f3197b3 | 3822 | check_uni(); |
79072805 | 3823 | Aop(OP_CONCAT); |
378cc40b LW |
3824 | } |
3825 | /* FALL THROUGH */ | |
3826 | case '0': case '1': case '2': case '3': case '4': | |
3827 | case '5': case '6': case '7': case '8': case '9': | |
b73d6f50 | 3828 | s = scan_num(s, &yylval); |
4e553d73 | 3829 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 3830 | "### Saw number in '%s'\n", s); |
5f80b19c | 3831 | } ); |
3280af22 | 3832 | if (PL_expect == XOPERATOR) |
8990e307 | 3833 | no_op("Number",s); |
79072805 LW |
3834 | TERM(THING); |
3835 | ||
3836 | case '\'': | |
09bef843 | 3837 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3838 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3839 | "### Saw string before '%s'\n", s); |
5f80b19c | 3840 | } ); |
3280af22 NIS |
3841 | if (PL_expect == XOPERATOR) { |
3842 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3843 | PL_expect = XTERM; | |
a0d0e21e | 3844 | depcom(); |
bbf60fe6 | 3845 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3846 | } |
463ee0b2 | 3847 | else |
8990e307 | 3848 | no_op("String",s); |
463ee0b2 | 3849 | } |
79072805 | 3850 | if (!s) |
85e6fe83 | 3851 | missingterm((char*)0); |
79072805 LW |
3852 | yylval.ival = OP_CONST; |
3853 | TERM(sublex_start()); | |
3854 | ||
3855 | case '"': | |
09bef843 | 3856 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3857 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3858 | "### Saw string before '%s'\n", s); |
5f80b19c | 3859 | } ); |
3280af22 NIS |
3860 | if (PL_expect == XOPERATOR) { |
3861 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
3862 | PL_expect = XTERM; | |
a0d0e21e | 3863 | depcom(); |
bbf60fe6 | 3864 | return REPORT(','); /* grandfather non-comma-format format */ |
a0d0e21e | 3865 | } |
463ee0b2 | 3866 | else |
8990e307 | 3867 | no_op("String",s); |
463ee0b2 | 3868 | } |
79072805 | 3869 | if (!s) |
85e6fe83 | 3870 | missingterm((char*)0); |
4633a7c4 | 3871 | yylval.ival = OP_CONST; |
3280af22 | 3872 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 3873 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
4633a7c4 LW |
3874 | yylval.ival = OP_STRINGIFY; |
3875 | break; | |
3876 | } | |
3877 | } | |
79072805 LW |
3878 | TERM(sublex_start()); |
3879 | ||
3880 | case '`': | |
09bef843 | 3881 | s = scan_str(s,FALSE,FALSE); |
4e553d73 | 3882 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
207e3d1a | 3883 | "### Saw backtick string before '%s'\n", s); |
5f80b19c | 3884 | } ); |
3280af22 | 3885 | if (PL_expect == XOPERATOR) |
8990e307 | 3886 | no_op("Backticks",s); |
79072805 | 3887 | if (!s) |
85e6fe83 | 3888 | missingterm((char*)0); |
79072805 LW |
3889 | yylval.ival = OP_BACKTICK; |
3890 | set_csh(); | |
3891 | TERM(sublex_start()); | |
3892 | ||
3893 | case '\\': | |
3894 | s++; | |
599cee73 | 3895 | if (ckWARN(WARN_SYNTAX) && PL_lex_inwhat && isDIGIT(*s)) |
9014280d | 3896 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", |
599cee73 | 3897 | *s, *s); |
3280af22 | 3898 | if (PL_expect == XOPERATOR) |
8990e307 | 3899 | no_op("Backslash",s); |
79072805 LW |
3900 | OPERATOR(REFGEN); |
3901 | ||
a7cb1f99 | 3902 | case 'v': |
e526c9e6 | 3903 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
a7cb1f99 GS |
3904 | char *start = s; |
3905 | start++; | |
3906 | start++; | |
dd629d5b | 3907 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
3908 | start++; |
3909 | if (*start == '.' && isDIGIT(start[1])) { | |
b73d6f50 | 3910 | s = scan_num(s, &yylval); |
a7cb1f99 GS |
3911 | TERM(THING); |
3912 | } | |
e526c9e6 | 3913 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
6f33ba73 RGS |
3914 | else if (!isALPHA(*start) && (PL_expect == XTERM |
3915 | || PL_expect == XREF || PL_expect == XSTATE | |
3916 | || PL_expect == XTERMORDORDOR)) { | |
e526c9e6 GS |
3917 | char c = *start; |
3918 | GV *gv; | |
3919 | *start = '\0'; | |
3920 | gv = gv_fetchpv(s, FALSE, SVt_PVCV); | |
3921 | *start = c; | |
3922 | if (!gv) { | |
b73d6f50 | 3923 | s = scan_num(s, &yylval); |
e526c9e6 GS |
3924 | TERM(THING); |
3925 | } | |
3926 | } | |
a7cb1f99 GS |
3927 | } |
3928 | goto keylookup; | |
79072805 | 3929 | case 'x': |
3280af22 | 3930 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
3931 | s++; |
3932 | Mop(OP_REPEAT); | |
2f3197b3 | 3933 | } |
79072805 LW |
3934 | goto keylookup; |
3935 | ||
378cc40b | 3936 | case '_': |
79072805 LW |
3937 | case 'a': case 'A': |
3938 | case 'b': case 'B': | |
3939 | case 'c': case 'C': | |
3940 | case 'd': case 'D': | |
3941 | case 'e': case 'E': | |
3942 | case 'f': case 'F': | |
3943 | case 'g': case 'G': | |
3944 | case 'h': case 'H': | |
3945 | case 'i': case 'I': | |
3946 | case 'j': case 'J': | |
3947 | case 'k': case 'K': | |
3948 | case 'l': case 'L': | |
3949 | case 'm': case 'M': | |
3950 | case 'n': case 'N': | |
3951 | case 'o': case 'O': | |
3952 | case 'p': case 'P': | |
3953 | case 'q': case 'Q': | |
3954 | case 'r': case 'R': | |
3955 | case 's': case 'S': | |
3956 | case 't': case 'T': | |
3957 | case 'u': case 'U': | |
a7cb1f99 | 3958 | case 'V': |
79072805 LW |
3959 | case 'w': case 'W': |
3960 | case 'X': | |
3961 | case 'y': case 'Y': | |
3962 | case 'z': case 'Z': | |
3963 | ||
49dc05e3 | 3964 | keylookup: { |
1d239bbb | 3965 | orig_keyword = 0; |
161b471a NIS |
3966 | gv = Nullgv; |
3967 | gvp = 0; | |
49dc05e3 | 3968 | |
3280af22 NIS |
3969 | PL_bufptr = s; |
3970 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 3971 | |
3972 | /* Some keywords can be followed by any delimiter, including ':' */ | |
155aba94 GS |
3973 | tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) || |
3974 | (len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') || | |
3975 | (PL_tokenbuf[0] == 'q' && | |
3976 | strchr("qwxr", PL_tokenbuf[1]))))); | |
8ebc5c01 | 3977 | |
3978 | /* x::* is just a word, unless x is "CORE" */ | |
3280af22 | 3979 | if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
3980 | goto just_a_word; |
3981 | ||
3643fb5f | 3982 | d = s; |
3280af22 | 3983 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
3984 | d++; /* no comments skipped here, or s### is misparsed */ |
3985 | ||
3986 | /* Is this a label? */ | |
3280af22 NIS |
3987 | if (!tmp && PL_expect == XSTATE |
3988 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
8ebc5c01 | 3989 | s = d + 1; |
3280af22 | 3990 | yylval.pval = savepv(PL_tokenbuf); |
8ebc5c01 | 3991 | CLINE; |
3992 | TOKEN(LABEL); | |
3643fb5f CS |
3993 | } |
3994 | ||
3995 | /* Check for keywords */ | |
3280af22 | 3996 | tmp = keyword(PL_tokenbuf, len); |
748a9306 LW |
3997 | |
3998 | /* Is this a word before a => operator? */ | |
1c3923b3 | 3999 | if (*d == '=' && d[1] == '>') { |
748a9306 | 4000 | CLINE; |
3280af22 | 4001 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf,0)); |
748a9306 | 4002 | yylval.opval->op_private = OPpCONST_BARE; |
0064a8a9 | 4003 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4004 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
748a9306 LW |
4005 | TERM(WORD); |
4006 | } | |
4007 | ||
a0d0e21e | 4008 | if (tmp < 0) { /* second-class keyword? */ |
56f7f34b CS |
4009 | GV *ogv = Nullgv; /* override (winner) */ |
4010 | GV *hgv = Nullgv; /* hidden (loser) */ | |
3280af22 | 4011 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 4012 | CV *cv; |
3280af22 | 4013 | if ((gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV)) && |
56f7f34b CS |
4014 | (cv = GvCVu(gv))) |
4015 | { | |
4016 | if (GvIMPORTED_CV(gv)) | |
4017 | ogv = gv; | |
4018 | else if (! CvMETHOD(cv)) | |
4019 | hgv = gv; | |
4020 | } | |
4021 | if (!ogv && | |
3280af22 NIS |
4022 | (gvp = (GV**)hv_fetch(PL_globalstash,PL_tokenbuf,len,FALSE)) && |
4023 | (gv = *gvp) != (GV*)&PL_sv_undef && | |
56f7f34b CS |
4024 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
4025 | { | |
4026 | ogv = gv; | |
4027 | } | |
4028 | } | |
4029 | if (ogv) { | |
30fe34ed | 4030 | orig_keyword = tmp; |
56f7f34b | 4031 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
4032 | } |
4033 | else if (gv && !gvp | |
4034 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
d0456cad | 4035 | && GvCVu(gv) |
3280af22 | 4036 | && !hv_fetch(GvHVn(PL_incgv), "Thread.pm", 9, FALSE)) |
6e7b2336 GS |
4037 | { |
4038 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 4039 | } |
7fc307b5 RGS |
4040 | else if (gv && !gvp |
4041 | && tmp == -KEY_err | |
4042 | && GvCVu(gv) | |
4043 | && PL_expect != XOPERATOR | |
4044 | && PL_expect != XTERMORDORDOR) | |
4045 | { | |
4046 | /* any sub overrides the "err" keyword, except when really an | |
4047 | * operator is expected */ | |
4048 | tmp = 0; | |
4049 | } | |
56f7f34b CS |
4050 | else { /* no override */ |
4051 | tmp = -tmp; | |
ac206dc8 | 4052 | if (tmp == KEY_dump && ckWARN(WARN_MISC)) { |
9014280d | 4053 | Perl_warner(aTHX_ packWARN(WARN_MISC), |
ac206dc8 RGS |
4054 | "dump() better written as CORE::dump()"); |
4055 | } | |
56f7f34b CS |
4056 | gv = Nullgv; |
4057 | gvp = 0; | |
4944e2f7 GS |
4058 | if (ckWARN(WARN_AMBIGUOUS) && hgv |
4059 | && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ | |
9014280d | 4060 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 4061 | "Ambiguous call resolved as CORE::%s(), %s", |
2f3ca594 | 4062 | GvENAME(hgv), "qualify as such or use &"); |
49dc05e3 | 4063 | } |
a0d0e21e LW |
4064 | } |
4065 | ||
4066 | reserved_word: | |
4067 | switch (tmp) { | |
79072805 LW |
4068 | |
4069 | default: /* not a keyword */ | |
93a17b20 | 4070 | just_a_word: { |
96e4d5b1 | 4071 | SV *sv; |
ce29ac45 | 4072 | int pkgname = 0; |
3280af22 | 4073 | char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
8990e307 LW |
4074 | |
4075 | /* Get the rest if it looks like a package qualifier */ | |
4076 | ||
155aba94 | 4077 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 4078 | STRLEN morelen; |
3280af22 | 4079 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
4080 | TRUE, &morelen); |
4081 | if (!morelen) | |
cea2e8a9 | 4082 | Perl_croak(aTHX_ "Bad name after %s%s", PL_tokenbuf, |
ec2ab091 | 4083 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 4084 | len += morelen; |
ce29ac45 | 4085 | pkgname = 1; |
a0d0e21e | 4086 | } |
8990e307 | 4087 | |
3280af22 NIS |
4088 | if (PL_expect == XOPERATOR) { |
4089 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 4090 | CopLINE_dec(PL_curcop); |
9014280d | 4091 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), PL_warn_nosemi); |
57843af0 | 4092 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
4093 | } |
4094 | else | |
54310121 | 4095 | no_op("Bareword",s); |
463ee0b2 | 4096 | } |
8990e307 | 4097 | |
c3e0f903 GS |
4098 | /* Look for a subroutine with this name in current package, |
4099 | unless name is "Foo::", in which case Foo is a bearword | |
4100 | (and a package name). */ | |
4101 | ||
4102 | if (len > 2 && | |
3280af22 | 4103 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 4104 | { |
e476b1b5 | 4105 | if (ckWARN(WARN_BAREWORD) && ! gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVHV)) |
9014280d | 4106 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
599cee73 | 4107 | "Bareword \"%s\" refers to nonexistent package", |
3280af22 | 4108 | PL_tokenbuf); |
c3e0f903 | 4109 | len -= 2; |
3280af22 | 4110 | PL_tokenbuf[len] = '\0'; |
c3e0f903 GS |
4111 | gv = Nullgv; |
4112 | gvp = 0; | |
4113 | } | |
4114 | else { | |
4115 | len = 0; | |
4116 | if (!gv) | |
3280af22 | 4117 | gv = gv_fetchpv(PL_tokenbuf, FALSE, SVt_PVCV); |
c3e0f903 GS |
4118 | } |
4119 | ||
4120 | /* if we saw a global override before, get the right name */ | |
8990e307 | 4121 | |
49dc05e3 | 4122 | if (gvp) { |
79cb57f6 | 4123 | sv = newSVpvn("CORE::GLOBAL::",14); |
3280af22 | 4124 | sv_catpv(sv,PL_tokenbuf); |
49dc05e3 GS |
4125 | } |
4126 | else | |
3280af22 | 4127 | sv = newSVpv(PL_tokenbuf,0); |
8990e307 | 4128 | |
a0d0e21e LW |
4129 | /* Presume this is going to be a bareword of some sort. */ |
4130 | ||
4131 | CLINE; | |
49dc05e3 | 4132 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
a0d0e21e | 4133 | yylval.opval->op_private = OPpCONST_BARE; |
8f8cf39c JH |
4134 | /* UTF-8 package name? */ |
4135 | if (UTF && !IN_BYTES && | |
4136 | is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
4137 | SvUTF8_on(sv); | |
a0d0e21e | 4138 | |
c3e0f903 GS |
4139 | /* And if "Foo::", then that's what it certainly is. */ |
4140 | ||
4141 | if (len) | |
4142 | goto safe_bareword; | |
4143 | ||
8990e307 LW |
4144 | /* See if it's the indirect object for a list operator. */ |
4145 | ||
3280af22 NIS |
4146 | if (PL_oldoldbufptr && |
4147 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
4148 | (PL_oldoldbufptr == PL_last_lop |
4149 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 4150 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
4151 | (PL_expect == XREF || |
4152 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 4153 | { |
748a9306 LW |
4154 | bool immediate_paren = *s == '('; |
4155 | ||
a0d0e21e LW |
4156 | /* (Now we can afford to cross potential line boundary.) */ |
4157 | s = skipspace(s); | |
4158 | ||
4159 | /* Two barewords in a row may indicate method call. */ | |
4160 | ||
7e2040f0 | 4161 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && (tmp=intuit_method(s,gv))) |
bbf60fe6 | 4162 | return REPORT(tmp); |
a0d0e21e LW |
4163 | |
4164 | /* If not a declared subroutine, it's an indirect object. */ | |
4165 | /* (But it's an indir obj regardless for sort.) */ | |
4166 | ||
7948272d | 4167 | if ( !immediate_paren && (PL_last_lop_op == OP_SORT || |
f0670693 | 4168 | ((!gv || !GvCVu(gv)) && |
a9ef352a | 4169 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 4170 | PL_last_lop_op != OP_GREPSTART)))) |
a9ef352a | 4171 | { |
3280af22 | 4172 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 4173 | goto bareword; |
93a17b20 LW |
4174 | } |
4175 | } | |
8990e307 | 4176 | |
3280af22 | 4177 | PL_expect = XOPERATOR; |
8990e307 | 4178 | s = skipspace(s); |
1c3923b3 GS |
4179 | |
4180 | /* Is this a word before a => operator? */ | |
ce29ac45 | 4181 | if (*s == '=' && s[1] == '>' && !pkgname) { |
1c3923b3 GS |
4182 | CLINE; |
4183 | sv_setpv(((SVOP*)yylval.opval)->op_sv, PL_tokenbuf); | |
0064a8a9 | 4184 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
7948272d | 4185 | SvUTF8_on(((SVOP*)yylval.opval)->op_sv); |
1c3923b3 GS |
4186 | TERM(WORD); |
4187 | } | |
4188 | ||
4189 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 4190 | if (*s == '(') { |
79072805 | 4191 | CLINE; |
96e4d5b1 | 4192 | if (gv && GvCVu(gv)) { |
bf4acbe4 | 4193 | for (d = s + 1; SPACE_OR_TAB(*d); d++) ; |
7a52d87a | 4194 | if (*d == ')' && (sv = cv_const_sv(GvCV(gv)))) { |
96e4d5b1 | 4195 | s = d + 1; |
4196 | goto its_constant; | |
4197 | } | |
4198 | } | |
3280af22 NIS |
4199 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4200 | PL_expect = XOPERATOR; | |
93a17b20 | 4201 | force_next(WORD); |
c07a80fd | 4202 | yylval.ival = 0; |
463ee0b2 | 4203 | TOKEN('&'); |
79072805 | 4204 | } |
93a17b20 | 4205 | |
a0d0e21e | 4206 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 4207 | |
8ebc5c01 | 4208 | if ((*s == '$' || *s == '{') && (!gv || !GvCVu(gv))) { |
3280af22 NIS |
4209 | PL_last_lop = PL_oldbufptr; |
4210 | PL_last_lop_op = OP_METHOD; | |
93a17b20 | 4211 | PREBLOCK(METHOD); |
463ee0b2 LW |
4212 | } |
4213 | ||
8990e307 LW |
4214 | /* If followed by a bareword, see if it looks like indir obj. */ |
4215 | ||
30fe34ed RGS |
4216 | if (!orig_keyword |
4217 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
4218 | && (tmp = intuit_method(s,gv))) | |
bbf60fe6 | 4219 | return REPORT(tmp); |
93a17b20 | 4220 | |
8990e307 LW |
4221 | /* Not a method, so call it a subroutine (if defined) */ |
4222 | ||
8ebc5c01 | 4223 | if (gv && GvCVu(gv)) { |
46fc3d4c | 4224 | CV* cv; |
0453d815 | 4225 | if (lastchar == '-' && ckWARN_d(WARN_AMBIGUOUS)) |
9014280d | 4226 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4227 | "Ambiguous use of -%s resolved as -&%s()", |
3280af22 | 4228 | PL_tokenbuf, PL_tokenbuf); |
89bfa8cd | 4229 | /* Check for a constant sub */ |
46fc3d4c | 4230 | cv = GvCV(gv); |
96e4d5b1 | 4231 | if ((sv = cv_const_sv(cv))) { |
4232 | its_constant: | |
4233 | SvREFCNT_dec(((SVOP*)yylval.opval)->op_sv); | |
4234 | ((SVOP*)yylval.opval)->op_sv = SvREFCNT_inc(sv); | |
4235 | yylval.opval->op_private = 0; | |
4236 | TOKEN(WORD); | |
89bfa8cd | 4237 | } |
4238 | ||
a5f75d66 AD |
4239 | /* Resolve to GV now. */ |
4240 | op_free(yylval.opval); | |
4241 | yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv)); | |
9675f7ac | 4242 | yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 4243 | PL_last_lop = PL_oldbufptr; |
bf848113 | 4244 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 LW |
4245 | /* Is there a prototype? */ |
4246 | if (SvPOK(cv)) { | |
4247 | STRLEN len; | |
7a52d87a | 4248 | char *proto = SvPV((SV*)cv, len); |
4633a7c4 LW |
4249 | if (!len) |
4250 | TERM(FUNC0SUB); | |
7a52d87a | 4251 | if (strEQ(proto, "$")) |
4633a7c4 | 4252 | OPERATOR(UNIOPSUB); |
0f5d0394 AE |
4253 | while (*proto == ';') |
4254 | proto++; | |
7a52d87a | 4255 | if (*proto == '&' && *s == '{') { |
c99da370 JH |
4256 | sv_setpv(PL_subname, PL_curstash ? |
4257 | "__ANON__" : "__ANON__::__ANON__"); | |
4633a7c4 LW |
4258 | PREBLOCK(LSTOPSUB); |
4259 | } | |
a9ef352a | 4260 | } |
3280af22 NIS |
4261 | PL_nextval[PL_nexttoke].opval = yylval.opval; |
4262 | PL_expect = XTERM; | |
8990e307 LW |
4263 | force_next(WORD); |
4264 | TOKEN(NOAMP); | |
4265 | } | |
748a9306 | 4266 | |
8990e307 LW |
4267 | /* Call it a bare word */ |
4268 | ||
5603f27d GS |
4269 | if (PL_hints & HINT_STRICT_SUBS) |
4270 | yylval.opval->op_private |= OPpCONST_STRICT; | |
4271 | else { | |
4272 | bareword: | |
4273 | if (ckWARN(WARN_RESERVED)) { | |
4274 | if (lastchar != '-') { | |
4275 | for (d = PL_tokenbuf; *d && isLOWER(*d); d++) ; | |
238ae712 | 4276 | if (!*d && !gv_stashpv(PL_tokenbuf,FALSE)) |
9014280d | 4277 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
4278 | PL_tokenbuf); |
4279 | } | |
748a9306 LW |
4280 | } |
4281 | } | |
c3e0f903 GS |
4282 | |
4283 | safe_bareword: | |
f248d071 | 4284 | if (lastchar && strchr("*%&", lastchar) && ckWARN_d(WARN_AMBIGUOUS)) { |
9014280d | 4285 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4286 | "Operator or semicolon missing before %c%s", |
3280af22 | 4287 | lastchar, PL_tokenbuf); |
9014280d | 4288 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
0453d815 | 4289 | "Ambiguous use of %c resolved as operator %c", |
748a9306 LW |
4290 | lastchar, lastchar); |
4291 | } | |
93a17b20 | 4292 | TOKEN(WORD); |
79072805 | 4293 | } |
79072805 | 4294 | |
68dc0745 | 4295 | case KEY___FILE__: |
46fc3d4c | 4296 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
ed094faf | 4297 | newSVpv(CopFILE(PL_curcop),0)); |
46fc3d4c | 4298 | TERM(THING); |
4299 | ||
79072805 | 4300 | case KEY___LINE__: |
cf2093f6 | 4301 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
57843af0 | 4302 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))); |
79072805 | 4303 | TERM(THING); |
68dc0745 | 4304 | |
4305 | case KEY___PACKAGE__: | |
4306 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 4307 | (PL_curstash |
9508c957 | 4308 | ? newSVpv(HvNAME(PL_curstash), 0) |
3280af22 | 4309 | : &PL_sv_undef)); |
79072805 | 4310 | TERM(THING); |
79072805 | 4311 | |
e50aee73 | 4312 | case KEY___DATA__: |
79072805 LW |
4313 | case KEY___END__: { |
4314 | GV *gv; | |
79072805 LW |
4315 | |
4316 | /*SUPPRESS 560*/ | |
3280af22 | 4317 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
e50aee73 | 4318 | char *pname = "main"; |
3280af22 NIS |
4319 | if (PL_tokenbuf[2] == 'D') |
4320 | pname = HvNAME(PL_curstash ? PL_curstash : PL_defstash); | |
cea2e8a9 | 4321 | gv = gv_fetchpv(Perl_form(aTHX_ "%s::DATA", pname), TRUE, SVt_PVIO); |
a5f75d66 | 4322 | GvMULTI_on(gv); |
79072805 | 4323 | if (!GvIO(gv)) |
a0d0e21e | 4324 | GvIOp(gv) = newIO(); |
3280af22 | 4325 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
4326 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
4327 | { | |
3280af22 | 4328 | int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
4329 | fcntl(fd,F_SETFD,fd >= 3); |
4330 | } | |
79072805 | 4331 | #endif |
fd049845 | 4332 | /* Mark this internal pseudo-handle as clean */ |
4333 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
3280af22 | 4334 | if (PL_preprocess) |
50952442 | 4335 | IoTYPE(GvIOp(gv)) = IoTYPE_PIPE; |
3280af22 | 4336 | else if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 4337 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 4338 | else |
50952442 | 4339 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
4340 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
4341 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 4342 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 4343 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
4344 | if (PL_bufend-PL_bufptr > 2 |
4345 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
4346 | { |
4347 | Off_t loc = 0; | |
50952442 | 4348 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
4349 | loc = PerlIO_tell(PL_rsfp); |
4350 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
4351 | } | |
2986a63f JH |
4352 | #ifdef NETWARE |
4353 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
4354 | #else | |
c39cd008 | 4355 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 4356 | #endif /* NETWARE */ |
1143fce0 JH |
4357 | #ifdef PERLIO_IS_STDIO /* really? */ |
4358 | # if defined(__BORLANDC__) | |
cb359b41 JH |
4359 | /* XXX see note in do_binmode() */ |
4360 | ((FILE*)PL_rsfp)->flags &= ~_F_BIN; | |
1143fce0 JH |
4361 | # endif |
4362 | #endif | |
c39cd008 GS |
4363 | if (loc > 0) |
4364 | PerlIO_seek(PL_rsfp, loc, 0); | |
4365 | } | |
4366 | } | |
4367 | #endif | |
7948272d | 4368 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
4369 | if (!IN_BYTES) { |
4370 | if (UTF) | |
4371 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
4372 | else if (PL_encoding) { | |
4373 | SV *name; | |
4374 | dSP; | |
4375 | ENTER; | |
4376 | SAVETMPS; | |
4377 | PUSHMARK(sp); | |
4378 | EXTEND(SP, 1); | |
4379 | XPUSHs(PL_encoding); | |
4380 | PUTBACK; | |
4381 | call_method("name", G_SCALAR); | |
4382 | SPAGAIN; | |
4383 | name = POPs; | |
4384 | PUTBACK; | |
4385 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, | |
4386 | Perl_form(aTHX_ ":encoding(%"SVf")", | |
4387 | name)); | |
4388 | FREETMPS; | |
4389 | LEAVE; | |
4390 | } | |
4391 | } | |
7948272d | 4392 | #endif |
3280af22 | 4393 | PL_rsfp = Nullfp; |
79072805 LW |
4394 | } |
4395 | goto fake_eof; | |
e929a76b | 4396 | } |
de3bb511 | 4397 | |
8990e307 | 4398 | case KEY_AUTOLOAD: |
ed6116ce | 4399 | case KEY_DESTROY: |
79072805 | 4400 | case KEY_BEGIN: |
7d30b5c4 | 4401 | case KEY_CHECK: |
7d07dbc2 | 4402 | case KEY_INIT: |
7d30b5c4 | 4403 | case KEY_END: |
3280af22 NIS |
4404 | if (PL_expect == XSTATE) { |
4405 | s = PL_bufptr; | |
93a17b20 | 4406 | goto really_sub; |
79072805 LW |
4407 | } |
4408 | goto just_a_word; | |
4409 | ||
a0d0e21e LW |
4410 | case KEY_CORE: |
4411 | if (*s == ':' && s[1] == ':') { | |
4412 | s += 2; | |
748a9306 | 4413 | d = s; |
3280af22 | 4414 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
6798c92b GS |
4415 | if (!(tmp = keyword(PL_tokenbuf, len))) |
4416 | Perl_croak(aTHX_ "CORE::%s is not a keyword", PL_tokenbuf); | |
a0d0e21e LW |
4417 | if (tmp < 0) |
4418 | tmp = -tmp; | |
4419 | goto reserved_word; | |
4420 | } | |
4421 | goto just_a_word; | |
4422 | ||
463ee0b2 LW |
4423 | case KEY_abs: |
4424 | UNI(OP_ABS); | |
4425 | ||
79072805 LW |
4426 | case KEY_alarm: |
4427 | UNI(OP_ALARM); | |
4428 | ||
4429 | case KEY_accept: | |
a0d0e21e | 4430 | LOP(OP_ACCEPT,XTERM); |
79072805 | 4431 | |
463ee0b2 LW |
4432 | case KEY_and: |
4433 | OPERATOR(ANDOP); | |
4434 | ||
79072805 | 4435 | case KEY_atan2: |
a0d0e21e | 4436 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 4437 | |
79072805 | 4438 | case KEY_bind: |
a0d0e21e | 4439 | LOP(OP_BIND,XTERM); |
79072805 LW |
4440 | |
4441 | case KEY_binmode: | |
1c1fc3ea | 4442 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
4443 | |
4444 | case KEY_bless: | |
a0d0e21e | 4445 | LOP(OP_BLESS,XTERM); |
79072805 LW |
4446 | |
4447 | case KEY_chop: | |
4448 | UNI(OP_CHOP); | |
4449 | ||
4450 | case KEY_continue: | |
4451 | PREBLOCK(CONTINUE); | |
4452 | ||
4453 | case KEY_chdir: | |
85e6fe83 | 4454 | (void)gv_fetchpv("ENV",TRUE, SVt_PVHV); /* may use HOME */ |
79072805 LW |
4455 | UNI(OP_CHDIR); |
4456 | ||
4457 | case KEY_close: | |
4458 | UNI(OP_CLOSE); | |
4459 | ||
4460 | case KEY_closedir: | |
4461 | UNI(OP_CLOSEDIR); | |
4462 | ||
4463 | case KEY_cmp: | |
4464 | Eop(OP_SCMP); | |
4465 | ||
4466 | case KEY_caller: | |
4467 | UNI(OP_CALLER); | |
4468 | ||
4469 | case KEY_crypt: | |
4470 | #ifdef FCRYPT | |
f4c556ac GS |
4471 | if (!PL_cryptseen) { |
4472 | PL_cryptseen = TRUE; | |
de3bb511 | 4473 | init_des(); |
f4c556ac | 4474 | } |
a687059c | 4475 | #endif |
a0d0e21e | 4476 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
4477 | |
4478 | case KEY_chmod: | |
a0d0e21e | 4479 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
4480 | |
4481 | case KEY_chown: | |
a0d0e21e | 4482 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
4483 | |
4484 | case KEY_connect: | |
a0d0e21e | 4485 | LOP(OP_CONNECT,XTERM); |
79072805 | 4486 | |
463ee0b2 LW |
4487 | case KEY_chr: |
4488 | UNI(OP_CHR); | |
4489 | ||
79072805 LW |
4490 | case KEY_cos: |
4491 | UNI(OP_COS); | |
4492 | ||
4493 | case KEY_chroot: | |
4494 | UNI(OP_CHROOT); | |
4495 | ||
4496 | case KEY_do: | |
4497 | s = skipspace(s); | |
4498 | if (*s == '{') | |
a0d0e21e | 4499 | PRETERMBLOCK(DO); |
79072805 | 4500 | if (*s != '\'') |
89c5585f | 4501 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
378cc40b | 4502 | OPERATOR(DO); |
79072805 LW |
4503 | |
4504 | case KEY_die: | |
3280af22 | 4505 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 4506 | LOP(OP_DIE,XTERM); |
79072805 LW |
4507 | |
4508 | case KEY_defined: | |
4509 | UNI(OP_DEFINED); | |
4510 | ||
4511 | case KEY_delete: | |
a0d0e21e | 4512 | UNI(OP_DELETE); |
79072805 LW |
4513 | |
4514 | case KEY_dbmopen: | |
a0d0e21e LW |
4515 | gv_fetchpv("AnyDBM_File::ISA", GV_ADDMULTI, SVt_PVAV); |
4516 | LOP(OP_DBMOPEN,XTERM); | |
79072805 LW |
4517 | |
4518 | case KEY_dbmclose: | |
4519 | UNI(OP_DBMCLOSE); | |
4520 | ||
4521 | case KEY_dump: | |
a0d0e21e | 4522 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4523 | LOOPX(OP_DUMP); |
4524 | ||
4525 | case KEY_else: | |
4526 | PREBLOCK(ELSE); | |
4527 | ||
4528 | case KEY_elsif: | |
57843af0 | 4529 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4530 | OPERATOR(ELSIF); |
4531 | ||
4532 | case KEY_eq: | |
4533 | Eop(OP_SEQ); | |
4534 | ||
a0d0e21e LW |
4535 | case KEY_exists: |
4536 | UNI(OP_EXISTS); | |
4e553d73 | 4537 | |
79072805 LW |
4538 | case KEY_exit: |
4539 | UNI(OP_EXIT); | |
4540 | ||
4541 | case KEY_eval: | |
79072805 | 4542 | s = skipspace(s); |
3280af22 | 4543 | PL_expect = (*s == '{') ? XTERMBLOCK : XTERM; |
463ee0b2 | 4544 | UNIBRACK(OP_ENTEREVAL); |
79072805 LW |
4545 | |
4546 | case KEY_eof: | |
4547 | UNI(OP_EOF); | |
4548 | ||
c963b151 BD |
4549 | case KEY_err: |
4550 | OPERATOR(DOROP); | |
4551 | ||
79072805 LW |
4552 | case KEY_exp: |
4553 | UNI(OP_EXP); | |
4554 | ||
4555 | case KEY_each: | |
4556 | UNI(OP_EACH); | |
4557 | ||
4558 | case KEY_exec: | |
4559 | set_csh(); | |
a0d0e21e | 4560 | LOP(OP_EXEC,XREF); |
79072805 LW |
4561 | |
4562 | case KEY_endhostent: | |
4563 | FUN0(OP_EHOSTENT); | |
4564 | ||
4565 | case KEY_endnetent: | |
4566 | FUN0(OP_ENETENT); | |
4567 | ||
4568 | case KEY_endservent: | |
4569 | FUN0(OP_ESERVENT); | |
4570 | ||
4571 | case KEY_endprotoent: | |
4572 | FUN0(OP_EPROTOENT); | |
4573 | ||
4574 | case KEY_endpwent: | |
4575 | FUN0(OP_EPWENT); | |
4576 | ||
4577 | case KEY_endgrent: | |
4578 | FUN0(OP_EGRENT); | |
4579 | ||
4580 | case KEY_for: | |
4581 | case KEY_foreach: | |
57843af0 | 4582 | yylval.ival = CopLINE(PL_curcop); |
55497cff | 4583 | s = skipspace(s); |
7e2040f0 | 4584 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 4585 | char *p = s; |
3280af22 | 4586 | if ((PL_bufend - p) >= 3 && |
55497cff | 4587 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
4588 | p += 2; | |
77ca0c92 LW |
4589 | else if ((PL_bufend - p) >= 4 && |
4590 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
4591 | p += 3; | |
55497cff | 4592 | p = skipspace(p); |
7e2040f0 | 4593 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
4594 | p = scan_ident(p, PL_bufend, |
4595 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
4596 | p = skipspace(p); | |
4597 | } | |
4598 | if (*p != '$') | |
cea2e8a9 | 4599 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
55497cff | 4600 | } |
79072805 LW |
4601 | OPERATOR(FOR); |
4602 | ||
4603 | case KEY_formline: | |
a0d0e21e | 4604 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
4605 | |
4606 | case KEY_fork: | |
4607 | FUN0(OP_FORK); | |
4608 | ||
4609 | case KEY_fcntl: | |
a0d0e21e | 4610 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
4611 | |
4612 | case KEY_fileno: | |
4613 | UNI(OP_FILENO); | |
4614 | ||
4615 | case KEY_flock: | |
a0d0e21e | 4616 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
4617 | |
4618 | case KEY_gt: | |
4619 | Rop(OP_SGT); | |
4620 | ||
4621 | case KEY_ge: | |
4622 | Rop(OP_SGE); | |
4623 | ||
4624 | case KEY_grep: | |
2c38e13d | 4625 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
4626 | |
4627 | case KEY_goto: | |
a0d0e21e | 4628 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4629 | LOOPX(OP_GOTO); |
4630 | ||
4631 | case KEY_gmtime: | |
4632 | UNI(OP_GMTIME); | |
4633 | ||
4634 | case KEY_getc: | |
6f33ba73 | 4635 | UNIDOR(OP_GETC); |
79072805 LW |
4636 | |
4637 | case KEY_getppid: | |
4638 | FUN0(OP_GETPPID); | |
4639 | ||
4640 | case KEY_getpgrp: | |
4641 | UNI(OP_GETPGRP); | |
4642 | ||
4643 | case KEY_getpriority: | |
a0d0e21e | 4644 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
4645 | |
4646 | case KEY_getprotobyname: | |
4647 | UNI(OP_GPBYNAME); | |
4648 | ||
4649 | case KEY_getprotobynumber: | |
a0d0e21e | 4650 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
4651 | |
4652 | case KEY_getprotoent: | |
4653 | FUN0(OP_GPROTOENT); | |
4654 | ||
4655 | case KEY_getpwent: | |
4656 | FUN0(OP_GPWENT); | |
4657 | ||
4658 | case KEY_getpwnam: | |
ff68c719 | 4659 | UNI(OP_GPWNAM); |
79072805 LW |
4660 | |
4661 | case KEY_getpwuid: | |
ff68c719 | 4662 | UNI(OP_GPWUID); |
79072805 LW |
4663 | |
4664 | case KEY_getpeername: | |
4665 | UNI(OP_GETPEERNAME); | |
4666 | ||
4667 | case KEY_gethostbyname: | |
4668 | UNI(OP_GHBYNAME); | |
4669 | ||
4670 | case KEY_gethostbyaddr: | |
a0d0e21e | 4671 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
4672 | |
4673 | case KEY_gethostent: | |
4674 | FUN0(OP_GHOSTENT); | |
4675 | ||
4676 | case KEY_getnetbyname: | |
4677 | UNI(OP_GNBYNAME); | |
4678 | ||
4679 | case KEY_getnetbyaddr: | |
a0d0e21e | 4680 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
4681 | |
4682 | case KEY_getnetent: | |
4683 | FUN0(OP_GNETENT); | |
4684 | ||
4685 | case KEY_getservbyname: | |
a0d0e21e | 4686 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
4687 | |
4688 | case KEY_getservbyport: | |
a0d0e21e | 4689 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
4690 | |
4691 | case KEY_getservent: | |
4692 | FUN0(OP_GSERVENT); | |
4693 | ||
4694 | case KEY_getsockname: | |
4695 | UNI(OP_GETSOCKNAME); | |
4696 | ||
4697 | case KEY_getsockopt: | |
a0d0e21e | 4698 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
4699 | |
4700 | case KEY_getgrent: | |
4701 | FUN0(OP_GGRENT); | |
4702 | ||
4703 | case KEY_getgrnam: | |
ff68c719 | 4704 | UNI(OP_GGRNAM); |
79072805 LW |
4705 | |
4706 | case KEY_getgrgid: | |
ff68c719 | 4707 | UNI(OP_GGRGID); |
79072805 LW |
4708 | |
4709 | case KEY_getlogin: | |
4710 | FUN0(OP_GETLOGIN); | |
4711 | ||
93a17b20 | 4712 | case KEY_glob: |
a0d0e21e LW |
4713 | set_csh(); |
4714 | LOP(OP_GLOB,XTERM); | |
93a17b20 | 4715 | |
79072805 LW |
4716 | case KEY_hex: |
4717 | UNI(OP_HEX); | |
4718 | ||
4719 | case KEY_if: | |
57843af0 | 4720 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
4721 | OPERATOR(IF); |
4722 | ||
4723 | case KEY_index: | |
a0d0e21e | 4724 | LOP(OP_INDEX,XTERM); |
79072805 LW |
4725 | |
4726 | case KEY_int: | |
4727 | UNI(OP_INT); | |
4728 | ||
4729 | case KEY_ioctl: | |
a0d0e21e | 4730 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
4731 | |
4732 | case KEY_join: | |
a0d0e21e | 4733 | LOP(OP_JOIN,XTERM); |
79072805 LW |
4734 | |
4735 | case KEY_keys: | |
4736 | UNI(OP_KEYS); | |
4737 | ||
4738 | case KEY_kill: | |
a0d0e21e | 4739 | LOP(OP_KILL,XTERM); |
79072805 LW |
4740 | |
4741 | case KEY_last: | |
a0d0e21e | 4742 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 4743 | LOOPX(OP_LAST); |
4e553d73 | 4744 | |
79072805 LW |
4745 | case KEY_lc: |
4746 | UNI(OP_LC); | |
4747 | ||
4748 | case KEY_lcfirst: | |
4749 | UNI(OP_LCFIRST); | |
4750 | ||
4751 | case KEY_local: | |
09bef843 | 4752 | yylval.ival = 0; |
79072805 LW |
4753 | OPERATOR(LOCAL); |
4754 | ||
4755 | case KEY_length: | |
4756 | UNI(OP_LENGTH); | |
4757 | ||
4758 | case KEY_lt: | |
4759 | Rop(OP_SLT); | |
4760 | ||
4761 | case KEY_le: | |
4762 | Rop(OP_SLE); | |
4763 | ||
4764 | case KEY_localtime: | |
4765 | UNI(OP_LOCALTIME); | |
4766 | ||
4767 | case KEY_log: | |
4768 | UNI(OP_LOG); | |
4769 | ||
4770 | case KEY_link: | |
a0d0e21e | 4771 | LOP(OP_LINK,XTERM); |
79072805 LW |
4772 | |
4773 | case KEY_listen: | |
a0d0e21e | 4774 | LOP(OP_LISTEN,XTERM); |
79072805 | 4775 | |
c0329465 MB |
4776 | case KEY_lock: |
4777 | UNI(OP_LOCK); | |
4778 | ||
79072805 LW |
4779 | case KEY_lstat: |
4780 | UNI(OP_LSTAT); | |
4781 | ||
4782 | case KEY_m: | |
8782bef2 | 4783 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
4784 | TERM(sublex_start()); |
4785 | ||
a0d0e21e | 4786 | case KEY_map: |
2c38e13d | 4787 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 4788 | |
79072805 | 4789 | case KEY_mkdir: |
a0d0e21e | 4790 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
4791 | |
4792 | case KEY_msgctl: | |
a0d0e21e | 4793 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
4794 | |
4795 | case KEY_msgget: | |
a0d0e21e | 4796 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
4797 | |
4798 | case KEY_msgrcv: | |
a0d0e21e | 4799 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
4800 | |
4801 | case KEY_msgsnd: | |
a0d0e21e | 4802 | LOP(OP_MSGSND,XTERM); |
79072805 | 4803 | |
77ca0c92 | 4804 | case KEY_our: |
93a17b20 | 4805 | case KEY_my: |
77ca0c92 | 4806 | PL_in_my = tmp; |
c750a3ec | 4807 | s = skipspace(s); |
7e2040f0 | 4808 | if (isIDFIRST_lazy_if(s,UTF)) { |
3280af22 | 4809 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 SB |
4810 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
4811 | goto really_sub; | |
def3634b | 4812 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 4813 | if (!PL_in_my_stash) { |
c750a3ec | 4814 | char tmpbuf[1024]; |
3280af22 NIS |
4815 | PL_bufptr = s; |
4816 | sprintf(tmpbuf, "No such class %.1000s", PL_tokenbuf); | |
c750a3ec MB |
4817 | yyerror(tmpbuf); |
4818 | } | |
4819 | } | |
09bef843 | 4820 | yylval.ival = 1; |
55497cff | 4821 | OPERATOR(MY); |
93a17b20 | 4822 | |
79072805 | 4823 | case KEY_next: |
a0d0e21e | 4824 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
4825 | LOOPX(OP_NEXT); |
4826 | ||
4827 | case KEY_ne: | |
4828 | Eop(OP_SNE); | |
4829 | ||
a0d0e21e | 4830 | case KEY_no: |
3280af22 | 4831 | if (PL_expect != XSTATE) |
a0d0e21e LW |
4832 | yyerror("\"no\" not allowed in expression"); |
4833 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 4834 | s = force_version(s, FALSE); |
a0d0e21e LW |
4835 | yylval.ival = 0; |
4836 | OPERATOR(USE); | |
4837 | ||
4838 | case KEY_not: | |
2d2e263d LW |
4839 | if (*s == '(' || (s = skipspace(s), *s == '(')) |
4840 | FUN1(OP_NOT); | |
4841 | else | |
4842 | OPERATOR(NOTOP); | |
a0d0e21e | 4843 | |
79072805 | 4844 | case KEY_open: |
93a17b20 | 4845 | s = skipspace(s); |
7e2040f0 | 4846 | if (isIDFIRST_lazy_if(s,UTF)) { |
93a17b20 | 4847 | char *t; |
7e2040f0 | 4848 | for (d = s; isALNUM_lazy_if(d,UTF); d++) ; |
e2ab214b DM |
4849 | for (t=d; *t && isSPACE(*t); t++) ; |
4850 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) | |
66fbe8fb HS |
4851 | /* [perl #16184] */ |
4852 | && !(t[0] == '=' && t[1] == '>') | |
4853 | ) { | |
9014280d | 4854 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
0453d815 | 4855 | "Precedence problem: open %.*s should be open(%.*s)", |
66fbe8fb HS |
4856 | d - s, s, d - s, s); |
4857 | } | |
93a17b20 | 4858 | } |
a0d0e21e | 4859 | LOP(OP_OPEN,XTERM); |
79072805 | 4860 | |
463ee0b2 | 4861 | case KEY_or: |
a0d0e21e | 4862 | yylval.ival = OP_OR; |
463ee0b2 LW |
4863 | OPERATOR(OROP); |
4864 | ||
79072805 LW |
4865 | case KEY_ord: |
4866 | UNI(OP_ORD); | |
4867 | ||
4868 | case KEY_oct: | |
4869 | UNI(OP_OCT); | |
4870 | ||
4871 | case KEY_opendir: | |
a0d0e21e | 4872 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
4873 | |
4874 | case KEY_print: | |
3280af22 | 4875 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4876 | LOP(OP_PRINT,XREF); |
79072805 LW |
4877 | |
4878 | case KEY_printf: | |
3280af22 | 4879 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 4880 | LOP(OP_PRTF,XREF); |
79072805 | 4881 | |
c07a80fd | 4882 | case KEY_prototype: |
4883 | UNI(OP_PROTOTYPE); | |
4884 | ||
79072805 | 4885 | case KEY_push: |
a0d0e21e | 4886 | LOP(OP_PUSH,XTERM); |
79072805 LW |
4887 | |
4888 | case KEY_pop: | |
6f33ba73 | 4889 | UNIDOR(OP_POP); |
79072805 | 4890 | |
a0d0e21e | 4891 | case KEY_pos: |
6f33ba73 | 4892 | UNIDOR(OP_POS); |
4e553d73 | 4893 | |
79072805 | 4894 | case KEY_pack: |
a0d0e21e | 4895 | LOP(OP_PACK,XTERM); |
79072805 LW |
4896 | |
4897 | case KEY_package: | |
a0d0e21e | 4898 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
79072805 LW |
4899 | OPERATOR(PACKAGE); |
4900 | ||
4901 | case KEY_pipe: | |
a0d0e21e | 4902 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
4903 | |
4904 | case KEY_q: | |
09bef843 | 4905 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4906 | if (!s) |
85e6fe83 | 4907 | missingterm((char*)0); |
79072805 LW |
4908 | yylval.ival = OP_CONST; |
4909 | TERM(sublex_start()); | |
4910 | ||
a0d0e21e LW |
4911 | case KEY_quotemeta: |
4912 | UNI(OP_QUOTEMETA); | |
4913 | ||
8990e307 | 4914 | case KEY_qw: |
09bef843 | 4915 | s = scan_str(s,FALSE,FALSE); |
8990e307 | 4916 | if (!s) |
85e6fe83 | 4917 | missingterm((char*)0); |
8127e0e3 GS |
4918 | force_next(')'); |
4919 | if (SvCUR(PL_lex_stuff)) { | |
4920 | OP *words = Nullop; | |
4921 | int warned = 0; | |
3280af22 | 4922 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 4923 | while (len) { |
7948272d | 4924 | SV *sv; |
8127e0e3 GS |
4925 | for (; isSPACE(*d) && len; --len, ++d) ; |
4926 | if (len) { | |
4927 | char *b = d; | |
e476b1b5 | 4928 | if (!warned && ckWARN(WARN_QW)) { |
8127e0e3 GS |
4929 | for (; !isSPACE(*d) && len; --len, ++d) { |
4930 | if (*d == ',') { | |
9014280d | 4931 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4932 | "Possible attempt to separate words with commas"); |
4933 | ++warned; | |
4934 | } | |
4935 | else if (*d == '#') { | |
9014280d | 4936 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 GS |
4937 | "Possible attempt to put comments in qw() list"); |
4938 | ++warned; | |
4939 | } | |
4940 | } | |
4941 | } | |
4942 | else { | |
4943 | for (; !isSPACE(*d) && len; --len, ++d) ; | |
4944 | } | |
7948272d NIS |
4945 | sv = newSVpvn(b, d-b); |
4946 | if (DO_UTF8(PL_lex_stuff)) | |
4947 | SvUTF8_on(sv); | |
8127e0e3 | 4948 | words = append_elem(OP_LIST, words, |
7948272d | 4949 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 4950 | } |
4951 | } | |
8127e0e3 GS |
4952 | if (words) { |
4953 | PL_nextval[PL_nexttoke].opval = words; | |
4954 | force_next(THING); | |
4955 | } | |
55497cff | 4956 | } |
37fd879b | 4957 | if (PL_lex_stuff) { |
8127e0e3 | 4958 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
4959 | PL_lex_stuff = Nullsv; |
4960 | } | |
3280af22 | 4961 | PL_expect = XTERM; |
8127e0e3 | 4962 | TOKEN('('); |
8990e307 | 4963 | |
79072805 | 4964 | case KEY_qq: |
09bef843 | 4965 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4966 | if (!s) |
85e6fe83 | 4967 | missingterm((char*)0); |
a0d0e21e | 4968 | yylval.ival = OP_STRINGIFY; |
3280af22 NIS |
4969 | if (SvIVX(PL_lex_stuff) == '\'') |
4970 | SvIVX(PL_lex_stuff) = 0; /* qq'$foo' should intepolate */ | |
79072805 LW |
4971 | TERM(sublex_start()); |
4972 | ||
8782bef2 GB |
4973 | case KEY_qr: |
4974 | s = scan_pat(s,OP_QR); | |
4975 | TERM(sublex_start()); | |
4976 | ||
79072805 | 4977 | case KEY_qx: |
09bef843 | 4978 | s = scan_str(s,FALSE,FALSE); |
79072805 | 4979 | if (!s) |
85e6fe83 | 4980 | missingterm((char*)0); |
79072805 LW |
4981 | yylval.ival = OP_BACKTICK; |
4982 | set_csh(); | |
4983 | TERM(sublex_start()); | |
4984 | ||
4985 | case KEY_return: | |
4986 | OLDLOP(OP_RETURN); | |
4987 | ||
4988 | case KEY_require: | |
a7cb1f99 | 4989 | s = skipspace(s); |
e759cc13 RGS |
4990 | if (isDIGIT(*s)) { |
4991 | s = force_version(s, FALSE); | |
a7cb1f99 | 4992 | } |
e759cc13 RGS |
4993 | else if (*s != 'v' || !isDIGIT(s[1]) |
4994 | || (s = force_version(s, TRUE), *s == 'v')) | |
4995 | { | |
a7cb1f99 GS |
4996 | *PL_tokenbuf = '\0'; |
4997 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 4998 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
a7cb1f99 GS |
4999 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), TRUE); |
5000 | else if (*s == '<') | |
5001 | yyerror("<> should be quotes"); | |
5002 | } | |
463ee0b2 | 5003 | UNI(OP_REQUIRE); |
79072805 LW |
5004 | |
5005 | case KEY_reset: | |
5006 | UNI(OP_RESET); | |
5007 | ||
5008 | case KEY_redo: | |
a0d0e21e | 5009 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
5010 | LOOPX(OP_REDO); |
5011 | ||
5012 | case KEY_rename: | |
a0d0e21e | 5013 | LOP(OP_RENAME,XTERM); |
79072805 LW |
5014 | |
5015 | case KEY_rand: | |
5016 | UNI(OP_RAND); | |
5017 | ||
5018 | case KEY_rmdir: | |
5019 | UNI(OP_RMDIR); | |
5020 | ||
5021 | case KEY_rindex: | |
a0d0e21e | 5022 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
5023 | |
5024 | case KEY_read: | |
a0d0e21e | 5025 | LOP(OP_READ,XTERM); |
79072805 LW |
5026 | |
5027 | case KEY_readdir: | |
5028 | UNI(OP_READDIR); | |
5029 | ||
93a17b20 LW |
5030 | case KEY_readline: |
5031 | set_csh(); | |
6f33ba73 | 5032 | UNIDOR(OP_READLINE); |
93a17b20 LW |
5033 | |
5034 | case KEY_readpipe: | |
5035 | set_csh(); | |
5036 | UNI(OP_BACKTICK); | |
5037 | ||
79072805 LW |
5038 | case KEY_rewinddir: |
5039 | UNI(OP_REWINDDIR); | |
5040 | ||
5041 | case KEY_recv: | |
a0d0e21e | 5042 | LOP(OP_RECV,XTERM); |
79072805 LW |
5043 | |
5044 | case KEY_reverse: | |
a0d0e21e | 5045 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
5046 | |
5047 | case KEY_readlink: | |
6f33ba73 | 5048 | UNIDOR(OP_READLINK); |
79072805 LW |
5049 | |
5050 | case KEY_ref: | |
5051 | UNI(OP_REF); | |
5052 | ||
5053 | case KEY_s: | |
5054 | s = scan_subst(s); | |
5055 | if (yylval.opval) | |
5056 | TERM(sublex_start()); | |
5057 | else | |
5058 | TOKEN(1); /* force error */ | |
5059 | ||
a0d0e21e LW |
5060 | case KEY_chomp: |
5061 | UNI(OP_CHOMP); | |
4e553d73 | 5062 | |
79072805 LW |
5063 | case KEY_scalar: |
5064 | UNI(OP_SCALAR); | |
5065 | ||
5066 | case KEY_select: | |
a0d0e21e | 5067 | LOP(OP_SELECT,XTERM); |
79072805 LW |
5068 | |
5069 | case KEY_seek: | |
a0d0e21e | 5070 | LOP(OP_SEEK,XTERM); |
79072805 LW |
5071 | |
5072 | case KEY_semctl: | |
a0d0e21e | 5073 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
5074 | |
5075 | case KEY_semget: | |
a0d0e21e | 5076 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
5077 | |
5078 | case KEY_semop: | |
a0d0e21e | 5079 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
5080 | |
5081 | case KEY_send: | |
a0d0e21e | 5082 | LOP(OP_SEND,XTERM); |
79072805 LW |
5083 | |
5084 | case KEY_setpgrp: | |
a0d0e21e | 5085 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
5086 | |
5087 | case KEY_setpriority: | |
a0d0e21e | 5088 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
5089 | |
5090 | case KEY_sethostent: | |
ff68c719 | 5091 | UNI(OP_SHOSTENT); |
79072805 LW |
5092 | |
5093 | case KEY_setnetent: | |
ff68c719 | 5094 | UNI(OP_SNETENT); |
79072805 LW |
5095 | |
5096 | case KEY_setservent: | |
ff68c719 | 5097 | UNI(OP_SSERVENT); |
79072805 LW |
5098 | |
5099 | case KEY_setprotoent: | |
ff68c719 | 5100 | UNI(OP_SPROTOENT); |
79072805 LW |
5101 | |
5102 | case KEY_setpwent: | |
5103 | FUN0(OP_SPWENT); | |
5104 | ||
5105 | case KEY_setgrent: | |
5106 | FUN0(OP_SGRENT); | |
5107 | ||
5108 | case KEY_seekdir: | |
a0d0e21e | 5109 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
5110 | |
5111 | case KEY_setsockopt: | |
a0d0e21e | 5112 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
5113 | |
5114 | case KEY_shift: | |
6f33ba73 | 5115 | UNIDOR(OP_SHIFT); |
79072805 LW |
5116 | |
5117 | case KEY_shmctl: | |
a0d0e21e | 5118 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
5119 | |
5120 | case KEY_shmget: | |
a0d0e21e | 5121 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
5122 | |
5123 | case KEY_shmread: | |
a0d0e21e | 5124 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
5125 | |
5126 | case KEY_shmwrite: | |
a0d0e21e | 5127 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
5128 | |
5129 | case KEY_shutdown: | |
a0d0e21e | 5130 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
5131 | |
5132 | case KEY_sin: | |
5133 | UNI(OP_SIN); | |
5134 | ||
5135 | case KEY_sleep: | |
5136 | UNI(OP_SLEEP); | |
5137 | ||
5138 | case KEY_socket: | |
a0d0e21e | 5139 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
5140 | |
5141 | case KEY_socketpair: | |
a0d0e21e | 5142 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
5143 | |
5144 | case KEY_sort: | |
3280af22 | 5145 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
79072805 LW |
5146 | s = skipspace(s); |
5147 | if (*s == ';' || *s == ')') /* probably a close */ | |
cea2e8a9 | 5148 | Perl_croak(aTHX_ "sort is now a reserved word"); |
3280af22 | 5149 | PL_expect = XTERM; |
15f0808c | 5150 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 5151 | LOP(OP_SORT,XREF); |
79072805 LW |
5152 | |
5153 | case KEY_split: | |
a0d0e21e | 5154 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
5155 | |
5156 | case KEY_sprintf: | |
a0d0e21e | 5157 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
5158 | |
5159 | case KEY_splice: | |
a0d0e21e | 5160 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
5161 | |
5162 | case KEY_sqrt: | |
5163 | UNI(OP_SQRT); | |
5164 | ||
5165 | case KEY_srand: | |
5166 | UNI(OP_SRAND); | |
5167 | ||
5168 | case KEY_stat: | |
5169 | UNI(OP_STAT); | |
5170 | ||
5171 | case KEY_study: | |
79072805 LW |
5172 | UNI(OP_STUDY); |
5173 | ||
5174 | case KEY_substr: | |
a0d0e21e | 5175 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
5176 | |
5177 | case KEY_format: | |
5178 | case KEY_sub: | |
93a17b20 | 5179 | really_sub: |
09bef843 | 5180 | { |
3280af22 | 5181 | char tmpbuf[sizeof PL_tokenbuf]; |
9c5ffd7c | 5182 | SSize_t tboffset = 0; |
09bef843 | 5183 | expectation attrful; |
d731386a | 5184 | bool have_name, have_proto, bad_proto; |
09bef843 SB |
5185 | int key = tmp; |
5186 | ||
5187 | s = skipspace(s); | |
5188 | ||
7e2040f0 | 5189 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
5190 | (*s == ':' && s[1] == ':')) |
5191 | { | |
5192 | PL_expect = XBLOCK; | |
5193 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
5194 | /* remember buffer pos'n for later force_word */ |
5195 | tboffset = s - PL_oldbufptr; | |
09bef843 SB |
5196 | d = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
5197 | if (strchr(tmpbuf, ':')) | |
5198 | sv_setpv(PL_subname, tmpbuf); | |
5199 | else { | |
5200 | sv_setsv(PL_subname,PL_curstname); | |
5201 | sv_catpvn(PL_subname,"::",2); | |
5202 | sv_catpvn(PL_subname,tmpbuf,len); | |
5203 | } | |
5204 | s = skipspace(d); | |
5205 | have_name = TRUE; | |
5206 | } | |
463ee0b2 | 5207 | else { |
09bef843 SB |
5208 | if (key == KEY_my) |
5209 | Perl_croak(aTHX_ "Missing name in \"my sub\""); | |
5210 | PL_expect = XTERMBLOCK; | |
5211 | attrful = XATTRTERM; | |
5212 | sv_setpv(PL_subname,"?"); | |
5213 | have_name = FALSE; | |
463ee0b2 | 5214 | } |
4633a7c4 | 5215 | |
09bef843 SB |
5216 | if (key == KEY_format) { |
5217 | if (*s == '=') | |
5218 | PL_lex_formbrack = PL_lex_brackets + 1; | |
5219 | if (have_name) | |
b1b65b59 JH |
5220 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5221 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5222 | OPERATOR(FORMAT); |
5223 | } | |
79072805 | 5224 | |
09bef843 SB |
5225 | /* Look for a prototype */ |
5226 | if (*s == '(') { | |
5227 | char *p; | |
5228 | ||
5229 | s = scan_str(s,FALSE,FALSE); | |
37fd879b | 5230 | if (!s) |
09bef843 | 5231 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 5232 | /* strip spaces and check for bad characters */ |
09bef843 SB |
5233 | d = SvPVX(PL_lex_stuff); |
5234 | tmp = 0; | |
d731386a | 5235 | bad_proto = FALSE; |
09bef843 | 5236 | for (p = d; *p; ++p) { |
d37a9538 | 5237 | if (!isSPACE(*p)) { |
09bef843 | 5238 | d[tmp++] = *p; |
d37a9538 ST |
5239 | if (!strchr("$@%*;[]&\\", *p)) |
5240 | bad_proto = TRUE; | |
5241 | } | |
09bef843 SB |
5242 | } |
5243 | d[tmp] = '\0'; | |
420cdfc1 | 5244 | if (bad_proto && ckWARN(WARN_SYNTAX)) |
9014280d | 5245 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
35c1215d NC |
5246 | "Illegal character in prototype for %"SVf" : %s", |
5247 | PL_subname, d); | |
09bef843 SB |
5248 | SvCUR(PL_lex_stuff) = tmp; |
5249 | have_proto = TRUE; | |
68dc0745 | 5250 | |
09bef843 | 5251 | s = skipspace(s); |
4633a7c4 | 5252 | } |
09bef843 SB |
5253 | else |
5254 | have_proto = FALSE; | |
5255 | ||
5256 | if (*s == ':' && s[1] != ':') | |
5257 | PL_expect = attrful; | |
8e742a20 MHM |
5258 | else if (*s != '{' && key == KEY_sub) { |
5259 | if (!have_name) | |
5260 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
5261 | else if (*s != ';') | |
5262 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, PL_subname); | |
5263 | } | |
09bef843 SB |
5264 | |
5265 | if (have_proto) { | |
b1b65b59 JH |
5266 | PL_nextval[PL_nexttoke].opval = |
5267 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
09bef843 SB |
5268 | PL_lex_stuff = Nullsv; |
5269 | force_next(THING); | |
68dc0745 | 5270 | } |
09bef843 | 5271 | if (!have_name) { |
c99da370 JH |
5272 | sv_setpv(PL_subname, |
5273 | PL_curstash ? "__ANON__" : "__ANON__::__ANON__"); | |
09bef843 | 5274 | TOKEN(ANONSUB); |
4633a7c4 | 5275 | } |
b1b65b59 JH |
5276 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
5277 | FALSE, TRUE, TRUE); | |
09bef843 SB |
5278 | if (key == KEY_my) |
5279 | TOKEN(MYSUB); | |
5280 | TOKEN(SUB); | |
4633a7c4 | 5281 | } |
79072805 LW |
5282 | |
5283 | case KEY_system: | |
5284 | set_csh(); | |
a0d0e21e | 5285 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
5286 | |
5287 | case KEY_symlink: | |
a0d0e21e | 5288 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
5289 | |
5290 | case KEY_syscall: | |
a0d0e21e | 5291 | LOP(OP_SYSCALL,XTERM); |
79072805 | 5292 | |
c07a80fd | 5293 | case KEY_sysopen: |
5294 | LOP(OP_SYSOPEN,XTERM); | |
5295 | ||
137443ea | 5296 | case KEY_sysseek: |
5297 | LOP(OP_SYSSEEK,XTERM); | |
5298 | ||
79072805 | 5299 | case KEY_sysread: |
a0d0e21e | 5300 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
5301 | |
5302 | case KEY_syswrite: | |
a0d0e21e | 5303 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
5304 | |
5305 | case KEY_tr: | |
5306 | s = scan_trans(s); | |
5307 | TERM(sublex_start()); | |
5308 | ||
5309 | case KEY_tell: | |
5310 | UNI(OP_TELL); | |
5311 | ||
5312 | case KEY_telldir: | |
5313 | UNI(OP_TELLDIR); | |
5314 | ||
463ee0b2 | 5315 | case KEY_tie: |
a0d0e21e | 5316 | LOP(OP_TIE,XTERM); |
463ee0b2 | 5317 | |
c07a80fd | 5318 | case KEY_tied: |
5319 | UNI(OP_TIED); | |
5320 | ||
79072805 LW |
5321 | case KEY_time: |
5322 | FUN0(OP_TIME); | |
5323 | ||
5324 | case KEY_times: | |
5325 | FUN0(OP_TMS); | |
5326 | ||
5327 | case KEY_truncate: | |
a0d0e21e | 5328 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
5329 | |
5330 | case KEY_uc: | |
5331 | UNI(OP_UC); | |
5332 | ||
5333 | case KEY_ucfirst: | |
5334 | UNI(OP_UCFIRST); | |
5335 | ||
463ee0b2 LW |
5336 | case KEY_untie: |
5337 | UNI(OP_UNTIE); | |
5338 | ||
79072805 | 5339 | case KEY_until: |
57843af0 | 5340 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5341 | OPERATOR(UNTIL); |
5342 | ||
5343 | case KEY_unless: | |
57843af0 | 5344 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5345 | OPERATOR(UNLESS); |
5346 | ||
5347 | case KEY_unlink: | |
a0d0e21e | 5348 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
5349 | |
5350 | case KEY_undef: | |
6f33ba73 | 5351 | UNIDOR(OP_UNDEF); |
79072805 LW |
5352 | |
5353 | case KEY_unpack: | |
a0d0e21e | 5354 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
5355 | |
5356 | case KEY_utime: | |
a0d0e21e | 5357 | LOP(OP_UTIME,XTERM); |
79072805 LW |
5358 | |
5359 | case KEY_umask: | |
6f33ba73 | 5360 | UNIDOR(OP_UMASK); |
79072805 LW |
5361 | |
5362 | case KEY_unshift: | |
a0d0e21e LW |
5363 | LOP(OP_UNSHIFT,XTERM); |
5364 | ||
5365 | case KEY_use: | |
3280af22 | 5366 | if (PL_expect != XSTATE) |
a0d0e21e | 5367 | yyerror("\"use\" not allowed in expression"); |
89bfa8cd | 5368 | s = skipspace(s); |
a7cb1f99 | 5369 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
e759cc13 | 5370 | s = force_version(s, TRUE); |
a7cb1f99 | 5371 | if (*s == ';' || (s = skipspace(s), *s == ';')) { |
3280af22 | 5372 | PL_nextval[PL_nexttoke].opval = Nullop; |
89bfa8cd | 5373 | force_next(WORD); |
5374 | } | |
e759cc13 RGS |
5375 | else if (*s == 'v') { |
5376 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
5377 | s = force_version(s, FALSE); | |
5378 | } | |
89bfa8cd | 5379 | } |
5380 | else { | |
5381 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
e759cc13 | 5382 | s = force_version(s, FALSE); |
89bfa8cd | 5383 | } |
a0d0e21e LW |
5384 | yylval.ival = 1; |
5385 | OPERATOR(USE); | |
79072805 LW |
5386 | |
5387 | case KEY_values: | |
5388 | UNI(OP_VALUES); | |
5389 | ||
5390 | case KEY_vec: | |
a0d0e21e | 5391 | LOP(OP_VEC,XTERM); |
79072805 LW |
5392 | |
5393 | case KEY_while: | |
57843af0 | 5394 | yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
5395 | OPERATOR(WHILE); |
5396 | ||
5397 | case KEY_warn: | |
3280af22 | 5398 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 5399 | LOP(OP_WARN,XTERM); |
79072805 LW |
5400 | |
5401 | case KEY_wait: | |
5402 | FUN0(OP_WAIT); | |
5403 | ||
5404 | case KEY_waitpid: | |
a0d0e21e | 5405 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
5406 | |
5407 | case KEY_wantarray: | |
5408 | FUN0(OP_WANTARRAY); | |
5409 | ||
5410 | case KEY_write: | |
9d116dd7 JH |
5411 | #ifdef EBCDIC |
5412 | { | |
df3728a2 JH |
5413 | char ctl_l[2]; |
5414 | ctl_l[0] = toCTRL('L'); | |
5415 | ctl_l[1] = '\0'; | |
9d116dd7 JH |
5416 | gv_fetchpv(ctl_l,TRUE, SVt_PV); |
5417 | } | |
5418 | #else | |
5419 | gv_fetchpv("\f",TRUE, SVt_PV); /* Make sure $^L is defined */ | |
5420 | #endif | |
79072805 LW |
5421 | UNI(OP_ENTERWRITE); |
5422 | ||
5423 | case KEY_x: | |
3280af22 | 5424 | if (PL_expect == XOPERATOR) |
79072805 LW |
5425 | Mop(OP_REPEAT); |
5426 | check_uni(); | |
5427 | goto just_a_word; | |
5428 | ||
a0d0e21e LW |
5429 | case KEY_xor: |
5430 | yylval.ival = OP_XOR; | |
5431 | OPERATOR(OROP); | |
5432 | ||
79072805 LW |
5433 | case KEY_y: |
5434 | s = scan_trans(s); | |
5435 | TERM(sublex_start()); | |
5436 | } | |
49dc05e3 | 5437 | }} |
79072805 | 5438 | } |
bf4acbe4 GS |
5439 | #ifdef __SC__ |
5440 | #pragma segment Main | |
5441 | #endif | |
79072805 | 5442 | |
e930465f JH |
5443 | static int |
5444 | S_pending_ident(pTHX) | |
8eceec63 SC |
5445 | { |
5446 | register char *d; | |
a55b55d8 | 5447 | register I32 tmp = 0; |
8eceec63 SC |
5448 | /* pit holds the identifier we read and pending_ident is reset */ |
5449 | char pit = PL_pending_ident; | |
5450 | PL_pending_ident = 0; | |
5451 | ||
5452 | DEBUG_T({ PerlIO_printf(Perl_debug_log, | |
5453 | "### Tokener saw identifier '%s'\n", PL_tokenbuf); }); | |
5454 | ||
5455 | /* if we're in a my(), we can't allow dynamics here. | |
5456 | $foo'bar has already been turned into $foo::bar, so | |
5457 | just check for colons. | |
5458 | ||
5459 | if it's a legal name, the OP is a PADANY. | |
5460 | */ | |
5461 | if (PL_in_my) { | |
5462 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
5463 | if (strchr(PL_tokenbuf,':')) | |
5464 | yyerror(Perl_form(aTHX_ "No package name allowed for " | |
5465 | "variable %s in \"our\"", | |
5466 | PL_tokenbuf)); | |
dd2155a4 | 5467 | tmp = allocmy(PL_tokenbuf); |
8eceec63 SC |
5468 | } |
5469 | else { | |
5470 | if (strchr(PL_tokenbuf,':')) | |
5471 | yyerror(Perl_form(aTHX_ PL_no_myglob,PL_tokenbuf)); | |
5472 | ||
5473 | yylval.opval = newOP(OP_PADANY, 0); | |
dd2155a4 | 5474 | yylval.opval->op_targ = allocmy(PL_tokenbuf); |
8eceec63 SC |
5475 | return PRIVATEREF; |
5476 | } | |
5477 | } | |
5478 | ||
5479 | /* | |
5480 | build the ops for accesses to a my() variable. | |
5481 | ||
5482 | Deny my($a) or my($b) in a sort block, *if* $a or $b is | |
5483 | then used in a comparison. This catches most, but not | |
5484 | all cases. For instance, it catches | |
5485 | sort { my($a); $a <=> $b } | |
5486 | but not | |
5487 | sort { my($a); $a < $b ? -1 : $a == $b ? 0 : 1; } | |
5488 | (although why you'd do that is anyone's guess). | |
5489 | */ | |
5490 | ||
5491 | if (!strchr(PL_tokenbuf,':')) { | |
8716503d DM |
5492 | if (!PL_in_my) |
5493 | tmp = pad_findmy(PL_tokenbuf); | |
5494 | if (tmp != NOT_IN_PAD) { | |
8eceec63 | 5495 | /* might be an "our" variable" */ |
dd2155a4 | 5496 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
8eceec63 | 5497 | /* build ops for a bareword */ |
dd2155a4 | 5498 | SV *sym = newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)), 0); |
8eceec63 SC |
5499 | sv_catpvn(sym, "::", 2); |
5500 | sv_catpv(sym, PL_tokenbuf+1); | |
5501 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); | |
5502 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5503 | gv_fetchpv(SvPVX(sym), | |
5504 | (PL_in_eval | |
5505 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 5506 | : GV_ADDMULTI |
8eceec63 SC |
5507 | ), |
5508 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5509 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5510 | : SVt_PVHV)); | |
5511 | return WORD; | |
5512 | } | |
5513 | ||
5514 | /* if it's a sort block and they're naming $a or $b */ | |
5515 | if (PL_last_lop_op == OP_SORT && | |
5516 | PL_tokenbuf[0] == '$' && | |
5517 | (PL_tokenbuf[1] == 'a' || PL_tokenbuf[1] == 'b') | |
5518 | && !PL_tokenbuf[2]) | |
5519 | { | |
5520 | for (d = PL_in_eval ? PL_oldoldbufptr : PL_linestart; | |
5521 | d < PL_bufend && *d != '\n'; | |
5522 | d++) | |
5523 | { | |
5524 | if (strnEQ(d,"<=>",3) || strnEQ(d,"cmp",3)) { | |
5525 | Perl_croak(aTHX_ "Can't use \"my %s\" in sort comparison", | |
5526 | PL_tokenbuf); | |
5527 | } | |
5528 | } | |
5529 | } | |
5530 | ||
5531 | yylval.opval = newOP(OP_PADANY, 0); | |
5532 | yylval.opval->op_targ = tmp; | |
5533 | return PRIVATEREF; | |
5534 | } | |
5535 | } | |
5536 | ||
5537 | /* | |
5538 | Whine if they've said @foo in a doublequoted string, | |
5539 | and @foo isn't a variable we can find in the symbol | |
5540 | table. | |
5541 | */ | |
5542 | if (pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
5543 | GV *gv = gv_fetchpv(PL_tokenbuf+1, FALSE, SVt_PVAV); | |
5544 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) | |
5545 | && ckWARN(WARN_AMBIGUOUS)) | |
5546 | { | |
5547 | /* Downgraded from fatal to warning 20000522 mjd */ | |
9014280d | 5548 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
8eceec63 SC |
5549 | "Possible unintended interpolation of %s in string", |
5550 | PL_tokenbuf); | |
5551 | } | |
5552 | } | |
5553 | ||
5554 | /* build ops for a bareword */ | |
5555 | yylval.opval = (OP*)newSVOP(OP_CONST, 0, newSVpv(PL_tokenbuf+1, 0)); | |
5556 | yylval.opval->op_private = OPpCONST_ENTERED; | |
5557 | gv_fetchpv(PL_tokenbuf+1, PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : TRUE, | |
5558 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
5559 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
5560 | : SVt_PVHV)); | |
5561 | return WORD; | |
5562 | } | |
5563 | ||
79072805 | 5564 | I32 |
864dbfa3 | 5565 | Perl_keyword(pTHX_ register char *d, I32 len) |
79072805 LW |
5566 | { |
5567 | switch (*d) { | |
5568 | case '_': | |
5569 | if (d[1] == '_') { | |
a0d0e21e | 5570 | if (strEQ(d,"__FILE__")) return -KEY___FILE__; |
68dc0745 | 5571 | if (strEQ(d,"__LINE__")) return -KEY___LINE__; |
5572 | if (strEQ(d,"__PACKAGE__")) return -KEY___PACKAGE__; | |
e50aee73 | 5573 | if (strEQ(d,"__DATA__")) return KEY___DATA__; |
79072805 LW |
5574 | if (strEQ(d,"__END__")) return KEY___END__; |
5575 | } | |
5576 | break; | |
8990e307 LW |
5577 | case 'A': |
5578 | if (strEQ(d,"AUTOLOAD")) return KEY_AUTOLOAD; | |
5579 | break; | |
79072805 | 5580 | case 'a': |
463ee0b2 LW |
5581 | switch (len) { |
5582 | case 3: | |
a0d0e21e LW |
5583 | if (strEQ(d,"and")) return -KEY_and; |
5584 | if (strEQ(d,"abs")) return -KEY_abs; | |
85e6fe83 | 5585 | break; |
463ee0b2 | 5586 | case 5: |
a0d0e21e LW |
5587 | if (strEQ(d,"alarm")) return -KEY_alarm; |
5588 | if (strEQ(d,"atan2")) return -KEY_atan2; | |
463ee0b2 LW |
5589 | break; |
5590 | case 6: | |
a0d0e21e | 5591 | if (strEQ(d,"accept")) return -KEY_accept; |
463ee0b2 LW |
5592 | break; |
5593 | } | |
79072805 LW |
5594 | break; |
5595 | case 'B': | |
5596 | if (strEQ(d,"BEGIN")) return KEY_BEGIN; | |
93a17b20 | 5597 | break; |
79072805 | 5598 | case 'b': |
a0d0e21e LW |
5599 | if (strEQ(d,"bless")) return -KEY_bless; |
5600 | if (strEQ(d,"bind")) return -KEY_bind; | |
5601 | if (strEQ(d,"binmode")) return -KEY_binmode; | |
5602 | break; | |
5603 | case 'C': | |
5604 | if (strEQ(d,"CORE")) return -KEY_CORE; | |
7d30b5c4 | 5605 | if (strEQ(d,"CHECK")) return KEY_CHECK; |
79072805 LW |
5606 | break; |
5607 | case 'c': | |
5608 | switch (len) { | |
5609 | case 3: | |
a0d0e21e LW |
5610 | if (strEQ(d,"cmp")) return -KEY_cmp; |
5611 | if (strEQ(d,"chr")) return -KEY_chr; | |
5612 | if (strEQ(d,"cos")) return -KEY_cos; | |
79072805 LW |
5613 | break; |
5614 | case 4: | |
77bc9082 | 5615 | if (strEQ(d,"chop")) return -KEY_chop; |
79072805 LW |
5616 | break; |
5617 | case 5: | |
a0d0e21e LW |
5618 | if (strEQ(d,"close")) return -KEY_close; |
5619 | if (strEQ(d,"chdir")) return -KEY_chdir; | |
77bc9082 | 5620 | if (strEQ(d,"chomp")) return -KEY_chomp; |
a0d0e21e LW |
5621 | if (strEQ(d,"chmod")) return -KEY_chmod; |
5622 | if (strEQ(d,"chown")) return -KEY_chown; | |
5623 | if (strEQ(d,"crypt")) return -KEY_crypt; | |
79072805 LW |
5624 | break; |
5625 | case 6: | |
a0d0e21e LW |
5626 | if (strEQ(d,"chroot")) return -KEY_chroot; |
5627 | if (strEQ(d,"caller")) return -KEY_caller; | |
79072805 LW |
5628 | break; |
5629 | case 7: | |
a0d0e21e | 5630 | if (strEQ(d,"connect")) return -KEY_connect; |
79072805 LW |
5631 | break; |
5632 | case 8: | |
a0d0e21e LW |
5633 | if (strEQ(d,"closedir")) return -KEY_closedir; |
5634 | if (strEQ(d,"continue")) return -KEY_continue; | |
79072805 LW |
5635 | break; |
5636 | } | |
5637 | break; | |
ed6116ce LW |
5638 | case 'D': |
5639 | if (strEQ(d,"DESTROY")) return KEY_DESTROY; | |
5640 | break; | |
79072805 LW |
5641 | case 'd': |
5642 | switch (len) { | |
5643 | case 2: | |
5644 | if (strEQ(d,"do")) return KEY_do; | |
5645 | break; | |
5646 | case 3: | |
a0d0e21e | 5647 | if (strEQ(d,"die")) return -KEY_die; |
79072805 LW |
5648 | break; |
5649 | case 4: | |
a0d0e21e | 5650 | if (strEQ(d,"dump")) return -KEY_dump; |
79072805 LW |
5651 | break; |
5652 | case 6: | |
5653 | if (strEQ(d,"delete")) return KEY_delete; | |
5654 | break; | |
5655 | case 7: | |
5656 | if (strEQ(d,"defined")) return KEY_defined; | |
a0d0e21e | 5657 | if (strEQ(d,"dbmopen")) return -KEY_dbmopen; |
79072805 LW |
5658 | break; |
5659 | case 8: | |
a0d0e21e | 5660 | if (strEQ(d,"dbmclose")) return -KEY_dbmclose; |
79072805 LW |
5661 | break; |
5662 | } | |
5663 | break; | |
5664 | case 'E': | |
79072805 LW |
5665 | if (strEQ(d,"END")) return KEY_END; |
5666 | break; | |
5667 | case 'e': | |
5668 | switch (len) { | |
5669 | case 2: | |
a0d0e21e | 5670 | if (strEQ(d,"eq")) return -KEY_eq; |
79072805 LW |
5671 | break; |
5672 | case 3: | |
a0d0e21e | 5673 | if (strEQ(d,"eof")) return -KEY_eof; |
c963b151 | 5674 | if (strEQ(d,"err")) return -KEY_err; |
a0d0e21e | 5675 | if (strEQ(d,"exp")) return -KEY_exp; |
79072805 LW |
5676 | break; |
5677 | case 4: | |
5678 | if (strEQ(d,"else")) return KEY_else; | |
a0d0e21e | 5679 | if (strEQ(d,"exit")) return -KEY_exit; |
79072805 | 5680 | if (strEQ(d,"eval")) return KEY_eval; |
a0d0e21e | 5681 | if (strEQ(d,"exec")) return -KEY_exec; |
3a6a8333 | 5682 | if (strEQ(d,"each")) return -KEY_each; |
79072805 LW |
5683 | break; |
5684 | case 5: | |
5685 | if (strEQ(d,"elsif")) return KEY_elsif; | |
5686 | break; | |
a0d0e21e LW |
5687 | case 6: |
5688 | if (strEQ(d,"exists")) return KEY_exists; | |
56da5a46 RGS |
5689 | if (strEQ(d,"elseif") && ckWARN_d(WARN_SYNTAX)) |
5690 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
5691 | "elseif should be elsif"); | |
a0d0e21e | 5692 | break; |
79072805 | 5693 | case 8: |
a0d0e21e LW |
5694 | if (strEQ(d,"endgrent")) return -KEY_endgrent; |
5695 | if (strEQ(d,"endpwent")) return -KEY_endpwent; | |
79072805 LW |
5696 | break; |
5697 | case 9: | |
a0d0e21e | 5698 | if (strEQ(d,"endnetent")) return -KEY_endnetent; |
79072805 LW |
5699 | break; |
5700 | case 10: | |
a0d0e21e LW |
5701 | if (strEQ(d,"endhostent")) return -KEY_endhostent; |
5702 | if (strEQ(d,"endservent")) return -KEY_endservent; | |
79072805 LW |
5703 | break; |
5704 | case 11: | |
a0d0e21e | 5705 | if (strEQ(d,"endprotoent")) return -KEY_endprotoent; |
79072805 | 5706 | break; |
a687059c | 5707 | } |
a687059c | 5708 | break; |
79072805 LW |
5709 | case 'f': |
5710 | switch (len) { | |
5711 | case 3: | |
5712 | if (strEQ(d,"for")) return KEY_for; | |
5713 | break; | |
5714 | case 4: | |
a0d0e21e | 5715 | if (strEQ(d,"fork")) return -KEY_fork; |
79072805 LW |
5716 | break; |
5717 | case 5: | |
a0d0e21e LW |
5718 | if (strEQ(d,"fcntl")) return -KEY_fcntl; |
5719 | if (strEQ(d,"flock")) return -KEY_flock; | |
79072805 LW |
5720 | break; |
5721 | case 6: | |
5722 | if (strEQ(d,"format")) return KEY_format; | |
a0d0e21e | 5723 | if (strEQ(d,"fileno")) return -KEY_fileno; |
79072805 LW |
5724 | break; |
5725 | case 7: | |
5726 | if (strEQ(d,"foreach")) return KEY_foreach; | |
5727 | break; | |
5728 | case 8: | |
a0d0e21e | 5729 | if (strEQ(d,"formline")) return -KEY_formline; |
79072805 | 5730 | break; |
378cc40b | 5731 | } |
a687059c | 5732 | break; |
79072805 | 5733 | case 'g': |
a687059c LW |
5734 | if (strnEQ(d,"get",3)) { |
5735 | d += 3; | |
5736 | if (*d == 'p') { | |
79072805 LW |
5737 | switch (len) { |
5738 | case 7: | |
a0d0e21e LW |
5739 | if (strEQ(d,"ppid")) return -KEY_getppid; |
5740 | if (strEQ(d,"pgrp")) return -KEY_getpgrp; | |
79072805 LW |
5741 | break; |
5742 | case 8: | |
a0d0e21e LW |
5743 | if (strEQ(d,"pwent")) return -KEY_getpwent; |
5744 | if (strEQ(d,"pwnam")) return -KEY_getpwnam; | |
5745 | if (strEQ(d,"pwuid")) return -KEY_getpwuid; | |
79072805 LW |
5746 | break; |
5747 | case 11: | |
a0d0e21e LW |
5748 | if (strEQ(d,"peername")) return -KEY_getpeername; |
5749 | if (strEQ(d,"protoent")) return -KEY_getprotoent; | |
5750 | if (strEQ(d,"priority")) return -KEY_getpriority; | |
79072805 LW |
5751 | break; |
5752 | case 14: | |
a0d0e21e | 5753 | if (strEQ(d,"protobyname")) return -KEY_getprotobyname; |
79072805 LW |
5754 | break; |
5755 | case 16: | |
a0d0e21e | 5756 | if (strEQ(d,"protobynumber"))return -KEY_getprotobynumber; |
79072805 LW |
5757 | break; |
5758 | } | |
a687059c LW |
5759 | } |
5760 | else if (*d == 'h') { | |
a0d0e21e LW |
5761 | if (strEQ(d,"hostbyname")) return -KEY_gethostbyname; |
5762 | if (strEQ(d,"hostbyaddr")) return -KEY_gethostbyaddr; | |
5763 | if (strEQ(d,"hostent")) return -KEY_gethostent; | |
a687059c LW |
5764 | } |
5765 | else if (*d == 'n') { | |
a0d0e21e LW |
5766 | if (strEQ(d,"netbyname")) return -KEY_getnetbyname; |
5767 | if (strEQ(d,"netbyaddr")) return -KEY_getnetbyaddr; | |
5768 | if (strEQ(d,"netent")) return -KEY_getnetent; | |
a687059c LW |
5769 | } |
5770 | else if (*d == 's') { | |
a0d0e21e LW |
5771 | if (strEQ(d,"servbyname")) return -KEY_getservbyname; |
5772 | if (strEQ(d,"servbyport")) return -KEY_getservbyport; | |
5773 | if (strEQ(d,"servent")) return -KEY_getservent; | |
5774 | if (strEQ(d,"sockname")) return -KEY_getsockname; | |
5775 | if (strEQ(d,"sockopt")) return -KEY_getsockopt; | |
a687059c LW |
5776 | } |
5777 | else if (*d == 'g') { | |
a0d0e21e LW |
5778 | if (strEQ(d,"grent")) return -KEY_getgrent; |
5779 | if (strEQ(d,"grnam")) return -KEY_getgrnam; | |
5780 | if (strEQ(d,"grgid")) return -KEY_getgrgid; | |
a687059c LW |
5781 | } |
5782 | else if (*d == 'l') { | |
a0d0e21e | 5783 | if (strEQ(d,"login")) return -KEY_getlogin; |
a687059c | 5784 | } |
a0d0e21e | 5785 | else if (strEQ(d,"c")) return -KEY_getc; |
79072805 | 5786 | break; |
a687059c | 5787 | } |
79072805 LW |
5788 | switch (len) { |
5789 | case 2: | |
a0d0e21e LW |
5790 | if (strEQ(d,"gt")) return -KEY_gt; |
5791 | if (strEQ(d,"ge")) return -KEY_ge; | |
79072805 LW |
5792 | break; |
5793 | case 4: | |
5794 | if (strEQ(d,"grep")) return KEY_grep; | |
5795 | if (strEQ(d,"goto")) return KEY_goto; | |
fb73857a | 5796 | if (strEQ(d,"glob")) return KEY_glob; |
79072805 LW |
5797 | break; |
5798 | case 6: | |
a0d0e21e | 5799 | if (strEQ(d,"gmtime")) return -KEY_gmtime; |
79072805 | 5800 | break; |
378cc40b | 5801 | } |
a687059c | 5802 | break; |
79072805 | 5803 | case 'h': |
a0d0e21e | 5804 | if (strEQ(d,"hex")) return -KEY_hex; |
a687059c | 5805 | break; |
7d07dbc2 MB |
5806 | case 'I': |
5807 | if (strEQ(d,"INIT")) return KEY_INIT; | |
5808 | break; | |
79072805 LW |
5809 | case 'i': |
5810 | switch (len) { | |
5811 | case 2: | |
5812 | if (strEQ(d,"if")) return KEY_if; | |
5813 | break; | |
5814 | case 3: | |
a0d0e21e | 5815 | if (strEQ(d,"int")) return -KEY_int; |
79072805 LW |
5816 | break; |
5817 | case 5: | |
a0d0e21e LW |
5818 | if (strEQ(d,"index")) return -KEY_index; |
5819 | if (strEQ(d,"ioctl")) return -KEY_ioctl; | |
79072805 LW |
5820 | break; |
5821 | } | |
a687059c | 5822 | break; |
79072805 | 5823 | case 'j': |
a0d0e21e | 5824 | if (strEQ(d,"join")) return -KEY_join; |
a687059c | 5825 | break; |
79072805 LW |
5826 | case 'k': |
5827 | if (len == 4) { | |
3a6a8333 | 5828 | if (strEQ(d,"keys")) return -KEY_keys; |
a0d0e21e | 5829 | if (strEQ(d,"kill")) return -KEY_kill; |
663a0e37 | 5830 | } |
79072805 | 5831 | break; |
79072805 LW |
5832 | case 'l': |
5833 | switch (len) { | |
5834 | case 2: | |
a0d0e21e LW |
5835 | if (strEQ(d,"lt")) return -KEY_lt; |
5836 | if (strEQ(d,"le")) return -KEY_le; | |
5837 | if (strEQ(d,"lc")) return -KEY_lc; | |
79072805 LW |
5838 | break; |
5839 | case 3: | |
a0d0e21e | 5840 | if (strEQ(d,"log")) return -KEY_log; |
79072805 LW |
5841 | break; |
5842 | case 4: | |
5843 | if (strEQ(d,"last")) return KEY_last; | |
a0d0e21e | 5844 | if (strEQ(d,"link")) return -KEY_link; |
c0329465 | 5845 | if (strEQ(d,"lock")) return -KEY_lock; |
395c3793 | 5846 | break; |
79072805 LW |
5847 | case 5: |
5848 | if (strEQ(d,"local")) return KEY_local; | |
a0d0e21e | 5849 | if (strEQ(d,"lstat")) return -KEY_lstat; |
79072805 LW |
5850 | break; |
5851 | case 6: | |
a0d0e21e LW |
5852 | if (strEQ(d,"length")) return -KEY_length; |
5853 | if (strEQ(d,"listen")) return -KEY_listen; | |
79072805 LW |
5854 | break; |
5855 | case 7: | |
a0d0e21e | 5856 | if (strEQ(d,"lcfirst")) return -KEY_lcfirst; |
79072805 LW |
5857 | break; |
5858 | case 9: | |
a0d0e21e | 5859 | if (strEQ(d,"localtime")) return -KEY_localtime; |
395c3793 LW |
5860 | break; |
5861 | } | |
a687059c | 5862 | break; |
79072805 LW |
5863 | case 'm': |
5864 | switch (len) { | |
5865 | case 1: return KEY_m; | |
93a17b20 LW |
5866 | case 2: |
5867 | if (strEQ(d,"my")) return KEY_my; | |
5868 | break; | |
a0d0e21e LW |
5869 | case 3: |
5870 | if (strEQ(d,"map")) return KEY_map; | |
5871 | break; | |
79072805 | 5872 | case 5: |
a0d0e21e | 5873 | if (strEQ(d,"mkdir")) return -KEY_mkdir; |
79072805 LW |
5874 | break; |
5875 | case 6: | |
a0d0e21e LW |
5876 | if (strEQ(d,"msgctl")) return -KEY_msgctl; |
5877 | if (strEQ(d,"msgget")) return -KEY_msgget; | |
5878 | if (strEQ(d,"msgrcv")) return -KEY_msgrcv; | |
5879 | if (strEQ(d,"msgsnd")) return -KEY_msgsnd; | |
79072805 LW |
5880 | break; |
5881 | } | |
a687059c | 5882 | break; |
79072805 LW |
5883 | case 'n': |
5884 | if (strEQ(d,"next")) return KEY_next; | |
a0d0e21e LW |
5885 | if (strEQ(d,"ne")) return -KEY_ne; |
5886 | if (strEQ(d,"not")) return -KEY_not; | |
5887 | if (strEQ(d,"no")) return KEY_no; | |
a687059c | 5888 | break; |
79072805 LW |
5889 | case 'o': |
5890 | switch (len) { | |
463ee0b2 | 5891 | case 2: |
a0d0e21e | 5892 | if (strEQ(d,"or")) return -KEY_or; |
463ee0b2 | 5893 | break; |
79072805 | 5894 | case 3: |
a0d0e21e LW |
5895 | if (strEQ(d,"ord")) return -KEY_ord; |
5896 | if (strEQ(d,"oct")) return -KEY_oct; | |
77ca0c92 | 5897 | if (strEQ(d,"our")) return KEY_our; |
79072805 LW |
5898 | break; |
5899 | case 4: | |
a0d0e21e | 5900 | if (strEQ(d,"open")) return -KEY_open; |
79072805 LW |
5901 | break; |
5902 | case 7: | |
a0d0e21e | 5903 | if (strEQ(d,"opendir")) return -KEY_opendir; |
79072805 | 5904 | break; |
fe14fcc3 | 5905 | } |
a687059c | 5906 | break; |
79072805 LW |
5907 | case 'p': |
5908 | switch (len) { | |
5909 | case 3: | |
4e553d73 | 5910 | if (strEQ(d,"pop")) return -KEY_pop; |
a0d0e21e | 5911 | if (strEQ(d,"pos")) return KEY_pos; |
79072805 LW |
5912 | break; |
5913 | case 4: | |
3a6a8333 | 5914 | if (strEQ(d,"push")) return -KEY_push; |
a0d0e21e LW |
5915 | if (strEQ(d,"pack")) return -KEY_pack; |
5916 | if (strEQ(d,"pipe")) return -KEY_pipe; | |
79072805 LW |
5917 | break; |
5918 | case 5: | |
5919 | if (strEQ(d,"print")) return KEY_print; | |
5920 | break; | |
5921 | case 6: | |
5922 | if (strEQ(d,"printf")) return KEY_printf; | |
5923 | break; | |
5924 | case 7: | |
5925 | if (strEQ(d,"package")) return KEY_package; | |
5926 | break; | |
c07a80fd | 5927 | case 9: |
5928 | if (strEQ(d,"prototype")) return KEY_prototype; | |
663a0e37 | 5929 | } |
79072805 LW |
5930 | break; |
5931 | case 'q': | |
5932 | if (len <= 2) { | |
5933 | if (strEQ(d,"q")) return KEY_q; | |
8782bef2 | 5934 | if (strEQ(d,"qr")) return KEY_qr; |
79072805 | 5935 | if (strEQ(d,"qq")) return KEY_qq; |
8990e307 | 5936 | if (strEQ(d,"qw")) return KEY_qw; |
79072805 | 5937 | if (strEQ(d,"qx")) return KEY_qx; |
663a0e37 | 5938 | } |
a0d0e21e | 5939 | else if (strEQ(d,"quotemeta")) return -KEY_quotemeta; |
79072805 LW |
5940 | break; |
5941 | case 'r': | |
5942 | switch (len) { | |
5943 | case 3: | |
a0d0e21e | 5944 | if (strEQ(d,"ref")) return -KEY_ref; |
79072805 LW |
5945 | break; |
5946 | case 4: | |
a0d0e21e LW |
5947 | if (strEQ(d,"read")) return -KEY_read; |
5948 | if (strEQ(d,"rand")) return -KEY_rand; | |
5949 | if (strEQ(d,"recv")) return -KEY_recv; | |
79072805 LW |
5950 | if (strEQ(d,"redo")) return KEY_redo; |
5951 | break; | |
5952 | case 5: | |
a0d0e21e LW |
5953 | if (strEQ(d,"rmdir")) return -KEY_rmdir; |
5954 | if (strEQ(d,"reset")) return -KEY_reset; | |
79072805 LW |
5955 | break; |
5956 | case 6: | |
5957 | if (strEQ(d,"return")) return KEY_return; | |
a0d0e21e LW |
5958 | if (strEQ(d,"rename")) return -KEY_rename; |
5959 | if (strEQ(d,"rindex")) return -KEY_rindex; | |
79072805 LW |
5960 | break; |
5961 | case 7: | |
ec4ab249 | 5962 | if (strEQ(d,"require")) return KEY_require; |
a0d0e21e LW |
5963 | if (strEQ(d,"reverse")) return -KEY_reverse; |
5964 | if (strEQ(d,"readdir")) return -KEY_readdir; | |
79072805 LW |
5965 | break; |
5966 | case 8: | |
a0d0e21e LW |
5967 | if (strEQ(d,"readlink")) return -KEY_readlink; |
5968 | if (strEQ(d,"readline")) return -KEY_readline; | |
5969 | if (strEQ(d,"readpipe")) return -KEY_readpipe; | |
79072805 LW |
5970 | break; |
5971 | case 9: | |
a0d0e21e | 5972 | if (strEQ(d,"rewinddir")) return -KEY_rewinddir; |
79072805 | 5973 | break; |
a687059c | 5974 | } |
79072805 LW |
5975 | break; |
5976 | case 's': | |
a687059c | 5977 | switch (d[1]) { |
79072805 | 5978 | case 0: return KEY_s; |
a687059c | 5979 | case 'c': |
79072805 | 5980 | if (strEQ(d,"scalar")) return KEY_scalar; |
a687059c LW |
5981 | break; |
5982 | case 'e': | |
79072805 LW |
5983 | switch (len) { |
5984 | case 4: | |
a0d0e21e LW |
5985 | if (strEQ(d,"seek")) return -KEY_seek; |
5986 | if (strEQ(d,"send")) return -KEY_send; | |
79072805 LW |
5987 | break; |
5988 | case 5: | |
a0d0e21e | 5989 | if (strEQ(d,"semop")) return -KEY_semop; |
79072805 LW |
5990 | break; |
5991 | case 6: | |
a0d0e21e LW |
5992 | if (strEQ(d,"select")) return -KEY_select; |
5993 | if (strEQ(d,"semctl")) return -KEY_semctl; | |
5994 | if (strEQ(d,"semget")) return -KEY_semget; | |
79072805 LW |
5995 | break; |
5996 | case 7: | |
a0d0e21e LW |
5997 | if (strEQ(d,"setpgrp")) return -KEY_setpgrp; |
5998 | if (strEQ(d,"seekdir")) return -KEY_seekdir; | |
79072805 LW |
5999 | break; |
6000 | case 8: | |
a0d0e21e LW |
6001 | if (strEQ(d,"setpwent")) return -KEY_setpwent; |
6002 | if (strEQ(d,"setgrent")) return -KEY_setgrent; | |
79072805 LW |
6003 | break; |
6004 | case 9: | |
a0d0e21e | 6005 | if (strEQ(d,"setnetent")) return -KEY_setnetent; |
79072805 LW |
6006 | break; |
6007 | case 10: | |
a0d0e21e LW |
6008 | if (strEQ(d,"setsockopt")) return -KEY_setsockopt; |
6009 | if (strEQ(d,"sethostent")) return -KEY_sethostent; | |
6010 | if (strEQ(d,"setservent")) return -KEY_setservent; | |
79072805 LW |
6011 | break; |
6012 | case 11: | |
a0d0e21e LW |
6013 | if (strEQ(d,"setpriority")) return -KEY_setpriority; |
6014 | if (strEQ(d,"setprotoent")) return -KEY_setprotoent; | |
79072805 LW |
6015 | break; |
6016 | } | |
a687059c LW |
6017 | break; |
6018 | case 'h': | |
79072805 LW |
6019 | switch (len) { |
6020 | case 5: | |
3a6a8333 | 6021 | if (strEQ(d,"shift")) return -KEY_shift; |
79072805 LW |
6022 | break; |
6023 | case 6: | |
a0d0e21e LW |
6024 | if (strEQ(d,"shmctl")) return -KEY_shmctl; |
6025 | if (strEQ(d,"shmget")) return -KEY_shmget; | |
79072805 LW |
6026 | break; |
6027 | case 7: | |
a0d0e21e | 6028 | if (strEQ(d,"shmread")) return -KEY_shmread; |
79072805 LW |
6029 | break; |
6030 | case 8: | |
a0d0e21e LW |
6031 | if (strEQ(d,"shmwrite")) return -KEY_shmwrite; |
6032 | if (strEQ(d,"shutdown")) return -KEY_shutdown; | |
79072805 LW |
6033 | break; |
6034 | } | |
a687059c LW |
6035 | break; |
6036 | case 'i': | |
a0d0e21e | 6037 | if (strEQ(d,"sin")) return -KEY_sin; |
a687059c LW |
6038 | break; |
6039 | case 'l': | |
a0d0e21e | 6040 | if (strEQ(d,"sleep")) return -KEY_sleep; |
a687059c LW |
6041 | break; |
6042 | case 'o': | |
79072805 | 6043 | if (strEQ(d,"sort")) return KEY_sort; |
a0d0e21e LW |
6044 | if (strEQ(d,"socket")) return -KEY_socket; |
6045 | if (strEQ(d,"socketpair")) return -KEY_socketpair; | |
a687059c LW |
6046 | break; |
6047 | case 'p': | |
79072805 | 6048 | if (strEQ(d,"split")) return KEY_split; |
a0d0e21e | 6049 | if (strEQ(d,"sprintf")) return -KEY_sprintf; |
3a6a8333 | 6050 | if (strEQ(d,"splice")) return -KEY_splice; |
a687059c LW |
6051 | break; |
6052 | case 'q': | |
a0d0e21e | 6053 | if (strEQ(d,"sqrt")) return -KEY_sqrt; |
a687059c LW |
6054 | break; |
6055 | case 'r': | |
a0d0e21e | 6056 | if (strEQ(d,"srand")) return -KEY_srand; |
a687059c LW |
6057 | break; |
6058 | case 't': | |
a0d0e21e | 6059 | if (strEQ(d,"stat")) return -KEY_stat; |
79072805 | 6060 | if (strEQ(d,"study")) return KEY_study; |
a687059c LW |
6061 | break; |
6062 | case 'u': | |
a0d0e21e | 6063 | if (strEQ(d,"substr")) return -KEY_substr; |
79072805 | 6064 | if (strEQ(d,"sub")) return KEY_sub; |
a687059c LW |
6065 | break; |
6066 | case 'y': | |
79072805 LW |
6067 | switch (len) { |
6068 | case 6: | |
a0d0e21e | 6069 | if (strEQ(d,"system")) return -KEY_system; |
79072805 LW |
6070 | break; |
6071 | case 7: | |
a0d0e21e LW |
6072 | if (strEQ(d,"symlink")) return -KEY_symlink; |
6073 | if (strEQ(d,"syscall")) return -KEY_syscall; | |
137443ea | 6074 | if (strEQ(d,"sysopen")) return -KEY_sysopen; |
6075 | if (strEQ(d,"sysread")) return -KEY_sysread; | |
6076 | if (strEQ(d,"sysseek")) return -KEY_sysseek; | |
79072805 LW |
6077 | break; |
6078 | case 8: | |
a0d0e21e | 6079 | if (strEQ(d,"syswrite")) return -KEY_syswrite; |
79072805 | 6080 | break; |
a687059c | 6081 | } |
a687059c LW |
6082 | break; |
6083 | } | |
6084 | break; | |
79072805 LW |
6085 | case 't': |
6086 | switch (len) { | |
6087 | case 2: | |
6088 | if (strEQ(d,"tr")) return KEY_tr; | |
6089 | break; | |
463ee0b2 LW |
6090 | case 3: |
6091 | if (strEQ(d,"tie")) return KEY_tie; | |
6092 | break; | |
79072805 | 6093 | case 4: |
a0d0e21e | 6094 | if (strEQ(d,"tell")) return -KEY_tell; |
c07a80fd | 6095 | if (strEQ(d,"tied")) return KEY_tied; |
a0d0e21e | 6096 | if (strEQ(d,"time")) return -KEY_time; |
79072805 LW |
6097 | break; |
6098 | case 5: | |
a0d0e21e | 6099 | if (strEQ(d,"times")) return -KEY_times; |
79072805 LW |
6100 | break; |
6101 | case 7: | |
a0d0e21e | 6102 | if (strEQ(d,"telldir")) return -KEY_telldir; |
79072805 LW |
6103 | break; |
6104 | case 8: | |
a0d0e21e | 6105 | if (strEQ(d,"truncate")) return -KEY_truncate; |
79072805 | 6106 | break; |
378cc40b | 6107 | } |
a687059c | 6108 | break; |
79072805 LW |
6109 | case 'u': |
6110 | switch (len) { | |
6111 | case 2: | |
a0d0e21e LW |
6112 | if (strEQ(d,"uc")) return -KEY_uc; |
6113 | break; | |
6114 | case 3: | |
6115 | if (strEQ(d,"use")) return KEY_use; | |
79072805 LW |
6116 | break; |
6117 | case 5: | |
6118 | if (strEQ(d,"undef")) return KEY_undef; | |
6119 | if (strEQ(d,"until")) return KEY_until; | |
463ee0b2 | 6120 | if (strEQ(d,"untie")) return KEY_untie; |
a0d0e21e LW |
6121 | if (strEQ(d,"utime")) return -KEY_utime; |
6122 | if (strEQ(d,"umask")) return -KEY_umask; | |
79072805 LW |
6123 | break; |
6124 | case 6: | |
6125 | if (strEQ(d,"unless")) return KEY_unless; | |
a0d0e21e LW |
6126 | if (strEQ(d,"unpack")) return -KEY_unpack; |
6127 | if (strEQ(d,"unlink")) return -KEY_unlink; | |
79072805 LW |
6128 | break; |
6129 | case 7: | |
3a6a8333 | 6130 | if (strEQ(d,"unshift")) return -KEY_unshift; |
a0d0e21e | 6131 | if (strEQ(d,"ucfirst")) return -KEY_ucfirst; |
79072805 | 6132 | break; |
a687059c LW |
6133 | } |
6134 | break; | |
79072805 | 6135 | case 'v': |
a0d0e21e LW |
6136 | if (strEQ(d,"values")) return -KEY_values; |
6137 | if (strEQ(d,"vec")) return -KEY_vec; | |
a687059c | 6138 | break; |
79072805 LW |
6139 | case 'w': |
6140 | switch (len) { | |
6141 | case 4: | |
a0d0e21e LW |
6142 | if (strEQ(d,"warn")) return -KEY_warn; |
6143 | if (strEQ(d,"wait")) return -KEY_wait; | |
79072805 LW |
6144 | break; |
6145 | case 5: | |
6146 | if (strEQ(d,"while")) return KEY_while; | |
a0d0e21e | 6147 | if (strEQ(d,"write")) return -KEY_write; |
79072805 LW |
6148 | break; |
6149 | case 7: | |
a0d0e21e | 6150 | if (strEQ(d,"waitpid")) return -KEY_waitpid; |
79072805 LW |
6151 | break; |
6152 | case 9: | |
a0d0e21e | 6153 | if (strEQ(d,"wantarray")) return -KEY_wantarray; |
79072805 | 6154 | break; |
2f3197b3 | 6155 | } |
a687059c | 6156 | break; |
79072805 | 6157 | case 'x': |
a0d0e21e LW |
6158 | if (len == 1) return -KEY_x; |
6159 | if (strEQ(d,"xor")) return -KEY_xor; | |
a687059c | 6160 | break; |
79072805 LW |
6161 | case 'y': |
6162 | if (len == 1) return KEY_y; | |
6163 | break; | |
6164 | case 'z': | |
a687059c LW |
6165 | break; |
6166 | } | |
79072805 | 6167 | return 0; |
a687059c LW |
6168 | } |
6169 | ||
76e3520e | 6170 | STATIC void |
cea2e8a9 | 6171 | S_checkcomma(pTHX_ register char *s, char *name, char *what) |
a687059c | 6172 | { |
2f3197b3 LW |
6173 | char *w; |
6174 | ||
d008e5eb | 6175 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
6176 | if (ckWARN(WARN_SYNTAX)) { |
6177 | int level = 1; | |
6178 | for (w = s+2; *w && level; w++) { | |
6179 | if (*w == '(') | |
6180 | ++level; | |
6181 | else if (*w == ')') | |
6182 | --level; | |
6183 | } | |
6184 | if (*w) | |
6185 | for (; *w && isSPACE(*w); w++) ; | |
6186 | if (!*w || !strchr(";|})]oaiuw!=", *w)) /* an advisory hack only... */ | |
9014280d | 6187 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 6188 | "%s (...) interpreted as function",name); |
d008e5eb | 6189 | } |
2f3197b3 | 6190 | } |
3280af22 | 6191 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 6192 | s++; |
a687059c LW |
6193 | if (*s == '(') |
6194 | s++; | |
3280af22 | 6195 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6196 | s++; |
7e2040f0 | 6197 | if (isIDFIRST_lazy_if(s,UTF)) { |
2f3197b3 | 6198 | w = s++; |
7e2040f0 | 6199 | while (isALNUM_lazy_if(s,UTF)) |
a687059c | 6200 | s++; |
3280af22 | 6201 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 6202 | s++; |
e929a76b | 6203 | if (*s == ',') { |
463ee0b2 | 6204 | int kw; |
e929a76b | 6205 | *s = '\0'; |
864dbfa3 | 6206 | kw = keyword(w, s - w) || get_cv(w, FALSE) != 0; |
e929a76b | 6207 | *s = ','; |
463ee0b2 | 6208 | if (kw) |
e929a76b | 6209 | return; |
cea2e8a9 | 6210 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
6211 | } |
6212 | } | |
6213 | } | |
6214 | ||
423cee85 JH |
6215 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
6216 | Best used as sv=new_constant(..., sv, ...). | |
6217 | If s, pv are NULL, calls subroutine with one argument, | |
6218 | and type is used with error messages only. */ | |
6219 | ||
b3ac6de7 | 6220 | STATIC SV * |
dff6d3cd | 6221 | S_new_constant(pTHX_ char *s, STRLEN len, const char *key, SV *sv, SV *pv, |
9b0e499b | 6222 | const char *type) |
b3ac6de7 | 6223 | { |
b3ac6de7 | 6224 | dSP; |
3280af22 | 6225 | HV *table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 6226 | SV *res; |
b3ac6de7 IZ |
6227 | SV **cvp; |
6228 | SV *cv, *typesv; | |
f0af216f | 6229 | const char *why1, *why2, *why3; |
4e553d73 | 6230 | |
f0af216f | 6231 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { |
423cee85 JH |
6232 | SV *msg; |
6233 | ||
f0af216f | 6234 | why2 = strEQ(key,"charnames") |
41ab332f | 6235 | ? "(possibly a missing \"use charnames ...\")" |
f0af216f | 6236 | : ""; |
4e553d73 | 6237 | msg = Perl_newSVpvf(aTHX_ "Constant(%s) unknown: %s", |
41ab332f JH |
6238 | (type ? type: "undef"), why2); |
6239 | ||
6240 | /* This is convoluted and evil ("goto considered harmful") | |
6241 | * but I do not understand the intricacies of all the different | |
6242 | * failure modes of %^H in here. The goal here is to make | |
6243 | * the most probable error message user-friendly. --jhi */ | |
6244 | ||
6245 | goto msgdone; | |
6246 | ||
423cee85 | 6247 | report: |
4e553d73 | 6248 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 6249 | (type ? type: "undef"), why1, why2, why3); |
41ab332f | 6250 | msgdone: |
423cee85 JH |
6251 | yyerror(SvPVX(msg)); |
6252 | SvREFCNT_dec(msg); | |
6253 | return sv; | |
6254 | } | |
b3ac6de7 IZ |
6255 | cvp = hv_fetch(table, key, strlen(key), FALSE); |
6256 | if (!cvp || !SvOK(*cvp)) { | |
423cee85 JH |
6257 | why1 = "$^H{"; |
6258 | why2 = key; | |
f0af216f | 6259 | why3 = "} is not defined"; |
423cee85 | 6260 | goto report; |
b3ac6de7 IZ |
6261 | } |
6262 | sv_2mortal(sv); /* Parent created it permanently */ | |
6263 | cv = *cvp; | |
423cee85 JH |
6264 | if (!pv && s) |
6265 | pv = sv_2mortal(newSVpvn(s, len)); | |
6266 | if (type && pv) | |
6267 | typesv = sv_2mortal(newSVpv(type, 0)); | |
b3ac6de7 | 6268 | else |
423cee85 | 6269 | typesv = &PL_sv_undef; |
4e553d73 | 6270 | |
e788e7d3 | 6271 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
6272 | ENTER ; |
6273 | SAVETMPS; | |
4e553d73 | 6274 | |
423cee85 | 6275 | PUSHMARK(SP) ; |
a5845cb7 | 6276 | EXTEND(sp, 3); |
423cee85 JH |
6277 | if (pv) |
6278 | PUSHs(pv); | |
b3ac6de7 | 6279 | PUSHs(sv); |
423cee85 JH |
6280 | if (pv) |
6281 | PUSHs(typesv); | |
b3ac6de7 | 6282 | PUTBACK; |
423cee85 | 6283 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 6284 | |
423cee85 | 6285 | SPAGAIN ; |
4e553d73 | 6286 | |
423cee85 | 6287 | /* Check the eval first */ |
9b0e499b | 6288 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
423cee85 JH |
6289 | STRLEN n_a; |
6290 | sv_catpv(ERRSV, "Propagated"); | |
6291 | yyerror(SvPV(ERRSV, n_a)); /* Duplicates the message inside eval */ | |
e1f15930 | 6292 | (void)POPs; |
423cee85 JH |
6293 | res = SvREFCNT_inc(sv); |
6294 | } | |
6295 | else { | |
6296 | res = POPs; | |
e1f15930 | 6297 | (void)SvREFCNT_inc(res); |
423cee85 | 6298 | } |
4e553d73 | 6299 | |
423cee85 JH |
6300 | PUTBACK ; |
6301 | FREETMPS ; | |
6302 | LEAVE ; | |
b3ac6de7 | 6303 | POPSTACK; |
4e553d73 | 6304 | |
b3ac6de7 | 6305 | if (!SvOK(res)) { |
423cee85 JH |
6306 | why1 = "Call to &{$^H{"; |
6307 | why2 = key; | |
f0af216f | 6308 | why3 = "}} did not return a defined value"; |
423cee85 JH |
6309 | sv = res; |
6310 | goto report; | |
9b0e499b | 6311 | } |
423cee85 | 6312 | |
9b0e499b | 6313 | return res; |
b3ac6de7 | 6314 | } |
4e553d73 | 6315 | |
76e3520e | 6316 | STATIC char * |
cea2e8a9 | 6317 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 LW |
6318 | { |
6319 | register char *d = dest; | |
8903cb82 | 6320 | register char *e = d + destlen - 3; /* two-character token, ending NUL */ |
463ee0b2 | 6321 | for (;;) { |
8903cb82 | 6322 | if (d >= e) |
cea2e8a9 | 6323 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6324 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6325 | *d++ = *s++; |
7e2040f0 | 6326 | else if (*s == '\'' && allow_package && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6327 | *d++ = ':'; |
6328 | *d++ = ':'; | |
6329 | s++; | |
6330 | } | |
c3e0f903 | 6331 | else if (*s == ':' && s[1] == ':' && allow_package && s[2] != '$') { |
463ee0b2 LW |
6332 | *d++ = *s++; |
6333 | *d++ = *s++; | |
6334 | } | |
fd400ab9 | 6335 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6336 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6337 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6338 | t += UTF8SKIP(t); |
6339 | if (d + (t - s) > e) | |
cea2e8a9 | 6340 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6341 | Copy(s, d, t - s, char); |
6342 | d += t - s; | |
6343 | s = t; | |
6344 | } | |
463ee0b2 LW |
6345 | else { |
6346 | *d = '\0'; | |
6347 | *slp = d - dest; | |
6348 | return s; | |
e929a76b | 6349 | } |
378cc40b LW |
6350 | } |
6351 | } | |
6352 | ||
76e3520e | 6353 | STATIC char * |
cea2e8a9 | 6354 | S_scan_ident(pTHX_ register char *s, register char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b LW |
6355 | { |
6356 | register char *d; | |
8903cb82 | 6357 | register char *e; |
79072805 | 6358 | char *bracket = 0; |
748a9306 | 6359 | char funny = *s++; |
378cc40b | 6360 | |
a0d0e21e LW |
6361 | if (isSPACE(*s)) |
6362 | s = skipspace(s); | |
378cc40b | 6363 | d = dest; |
8903cb82 | 6364 | e = d + destlen - 3; /* two-character token, ending NUL */ |
de3bb511 | 6365 | if (isDIGIT(*s)) { |
8903cb82 | 6366 | while (isDIGIT(*s)) { |
6367 | if (d >= e) | |
cea2e8a9 | 6368 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 6369 | *d++ = *s++; |
8903cb82 | 6370 | } |
378cc40b LW |
6371 | } |
6372 | else { | |
463ee0b2 | 6373 | for (;;) { |
8903cb82 | 6374 | if (d >= e) |
cea2e8a9 | 6375 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 6376 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 6377 | *d++ = *s++; |
7e2040f0 | 6378 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
6379 | *d++ = ':'; |
6380 | *d++ = ':'; | |
6381 | s++; | |
6382 | } | |
a0d0e21e | 6383 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
6384 | *d++ = *s++; |
6385 | *d++ = *s++; | |
6386 | } | |
fd400ab9 | 6387 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 6388 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 6389 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
6390 | t += UTF8SKIP(t); |
6391 | if (d + (t - s) > e) | |
cea2e8a9 | 6392 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
6393 | Copy(s, d, t - s, char); |
6394 | d += t - s; | |
6395 | s = t; | |
6396 | } | |
463ee0b2 LW |
6397 | else |
6398 | break; | |
6399 | } | |
378cc40b LW |
6400 | } |
6401 | *d = '\0'; | |
6402 | d = dest; | |
79072805 | 6403 | if (*d) { |
3280af22 NIS |
6404 | if (PL_lex_state != LEX_NORMAL) |
6405 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 6406 | return s; |
378cc40b | 6407 | } |
748a9306 | 6408 | if (*s == '$' && s[1] && |
7e2040f0 | 6409 | (isALNUM_lazy_if(s+1,UTF) || strchr("${", s[1]) || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 6410 | { |
4810e5ec | 6411 | return s; |
5cd24f17 | 6412 | } |
79072805 LW |
6413 | if (*s == '{') { |
6414 | bracket = s; | |
6415 | s++; | |
6416 | } | |
6417 | else if (ck_uni) | |
6418 | check_uni(); | |
93a17b20 | 6419 | if (s < send) |
79072805 LW |
6420 | *d = *s++; |
6421 | d[1] = '\0'; | |
2b92dfce | 6422 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 6423 | *d = toCTRL(*s); |
6424 | s++; | |
de3bb511 | 6425 | } |
79072805 | 6426 | if (bracket) { |
748a9306 | 6427 | if (isSPACE(s[-1])) { |
fa83b5b6 | 6428 | while (s < send) { |
6429 | char ch = *s++; | |
bf4acbe4 | 6430 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 6431 | *d = ch; |
6432 | break; | |
6433 | } | |
6434 | } | |
748a9306 | 6435 | } |
7e2040f0 | 6436 | if (isIDFIRST_lazy_if(d,UTF)) { |
79072805 | 6437 | d++; |
a0ed51b3 LW |
6438 | if (UTF) { |
6439 | e = s; | |
155aba94 | 6440 | while ((e < send && isALNUM_lazy_if(e,UTF)) || *e == ':') { |
a0ed51b3 | 6441 | e += UTF8SKIP(e); |
fd400ab9 | 6442 | while (e < send && UTF8_IS_CONTINUED(*e) && is_utf8_mark((U8*)e)) |
a0ed51b3 LW |
6443 | e += UTF8SKIP(e); |
6444 | } | |
6445 | Copy(s, d, e - s, char); | |
6446 | d += e - s; | |
6447 | s = e; | |
6448 | } | |
6449 | else { | |
2b92dfce | 6450 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 6451 | *d++ = *s++; |
2b92dfce | 6452 | if (d >= e) |
cea2e8a9 | 6453 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 6454 | } |
79072805 | 6455 | *d = '\0'; |
bf4acbe4 | 6456 | while (s < send && SPACE_OR_TAB(*s)) s++; |
ff68c719 | 6457 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
599cee73 | 6458 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest)) { |
dff6d3cd | 6459 | const char *brack = *s == '[' ? "[...]" : "{...}"; |
9014280d | 6460 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 6461 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
6462 | funny, dest, brack, funny, dest, brack); |
6463 | } | |
79072805 | 6464 | bracket++; |
a0be28da | 6465 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
79072805 LW |
6466 | return s; |
6467 | } | |
4e553d73 NIS |
6468 | } |
6469 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
6470 | * 1999-02-27 mjd-perl-patch@plover.com */ |
6471 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
6472 | && isALNUM(*s)) | |
6473 | { | |
6474 | d++; | |
6475 | while (isALNUM(*s) && d < e) { | |
6476 | *d++ = *s++; | |
6477 | } | |
6478 | if (d >= e) | |
cea2e8a9 | 6479 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 6480 | *d = '\0'; |
79072805 LW |
6481 | } |
6482 | if (*s == '}') { | |
6483 | s++; | |
7df0d042 | 6484 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 6485 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
6486 | PL_expect = XREF; |
6487 | } | |
748a9306 LW |
6488 | if (funny == '#') |
6489 | funny = '@'; | |
d008e5eb | 6490 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 6491 | if (ckWARN(WARN_AMBIGUOUS) && |
864dbfa3 | 6492 | (keyword(dest, d - dest) || get_cv(dest, FALSE))) |
d008e5eb | 6493 | { |
9014280d | 6494 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
d008e5eb GS |
6495 | "Ambiguous use of %c{%s} resolved to %c%s", |
6496 | funny, dest, funny, dest); | |
6497 | } | |
6498 | } | |
79072805 LW |
6499 | } |
6500 | else { | |
6501 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 6502 | *dest = '\0'; |
79072805 LW |
6503 | } |
6504 | } | |
3280af22 NIS |
6505 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
6506 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
6507 | return s; |
6508 | } | |
6509 | ||
cea2e8a9 | 6510 | void |
2b36a5a0 | 6511 | Perl_pmflag(pTHX_ U32* pmfl, int ch) |
a0d0e21e | 6512 | { |
bbce6d69 | 6513 | if (ch == 'i') |
a0d0e21e | 6514 | *pmfl |= PMf_FOLD; |
a0d0e21e LW |
6515 | else if (ch == 'g') |
6516 | *pmfl |= PMf_GLOBAL; | |
c90c0ff4 | 6517 | else if (ch == 'c') |
6518 | *pmfl |= PMf_CONTINUE; | |
a0d0e21e LW |
6519 | else if (ch == 'o') |
6520 | *pmfl |= PMf_KEEP; | |
6521 | else if (ch == 'm') | |
6522 | *pmfl |= PMf_MULTILINE; | |
6523 | else if (ch == 's') | |
6524 | *pmfl |= PMf_SINGLELINE; | |
6525 | else if (ch == 'x') | |
6526 | *pmfl |= PMf_EXTENDED; | |
6527 | } | |
378cc40b | 6528 | |
76e3520e | 6529 | STATIC char * |
cea2e8a9 | 6530 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 6531 | { |
79072805 LW |
6532 | PMOP *pm; |
6533 | char *s; | |
378cc40b | 6534 | |
09bef843 | 6535 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6536 | if (!s) |
cea2e8a9 | 6537 | Perl_croak(aTHX_ "Search pattern not terminated"); |
bbce6d69 | 6538 | |
8782bef2 | 6539 | pm = (PMOP*)newPMOP(type, 0); |
3280af22 | 6540 | if (PL_multi_open == '?') |
79072805 | 6541 | pm->op_pmflags |= PMf_ONCE; |
8782bef2 GB |
6542 | if(type == OP_QR) { |
6543 | while (*s && strchr("iomsx", *s)) | |
6544 | pmflag(&pm->op_pmflags,*s++); | |
6545 | } | |
6546 | else { | |
6547 | while (*s && strchr("iogcmsx", *s)) | |
6548 | pmflag(&pm->op_pmflags,*s++); | |
6549 | } | |
4ac733c9 MJD |
6550 | /* issue a warning if /c is specified,but /g is not */ |
6551 | if (ckWARN(WARN_REGEXP) && | |
6552 | (pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) | |
6553 | { | |
6554 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_without_g); | |
6555 | } | |
6556 | ||
4633a7c4 | 6557 | pm->op_pmpermflags = pm->op_pmflags; |
bbce6d69 | 6558 | |
3280af22 | 6559 | PL_lex_op = (OP*)pm; |
79072805 | 6560 | yylval.ival = OP_MATCH; |
378cc40b LW |
6561 | return s; |
6562 | } | |
6563 | ||
76e3520e | 6564 | STATIC char * |
cea2e8a9 | 6565 | S_scan_subst(pTHX_ char *start) |
79072805 | 6566 | { |
a0d0e21e | 6567 | register char *s; |
79072805 | 6568 | register PMOP *pm; |
4fdae800 | 6569 | I32 first_start; |
79072805 LW |
6570 | I32 es = 0; |
6571 | ||
79072805 LW |
6572 | yylval.ival = OP_NULL; |
6573 | ||
09bef843 | 6574 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6575 | |
37fd879b | 6576 | if (!s) |
cea2e8a9 | 6577 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 6578 | |
3280af22 | 6579 | if (s[-1] == PL_multi_open) |
79072805 LW |
6580 | s--; |
6581 | ||
3280af22 | 6582 | first_start = PL_multi_start; |
09bef843 | 6583 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6584 | if (!s) { |
37fd879b | 6585 | if (PL_lex_stuff) { |
3280af22 | 6586 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6587 | PL_lex_stuff = Nullsv; |
6588 | } | |
cea2e8a9 | 6589 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 6590 | } |
3280af22 | 6591 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 6592 | |
79072805 | 6593 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
48c036b1 | 6594 | while (*s) { |
a687059c LW |
6595 | if (*s == 'e') { |
6596 | s++; | |
2f3197b3 | 6597 | es++; |
a687059c | 6598 | } |
b3eb6a9b | 6599 | else if (strchr("iogcmsx", *s)) |
a0d0e21e | 6600 | pmflag(&pm->op_pmflags,*s++); |
48c036b1 GS |
6601 | else |
6602 | break; | |
378cc40b | 6603 | } |
79072805 | 6604 | |
64e578a2 MJD |
6605 | /* /c is not meaningful with s/// */ |
6606 | if (ckWARN(WARN_REGEXP) && (pm->op_pmflags & PMf_CONTINUE)) | |
4ac733c9 | 6607 | { |
64e578a2 | 6608 | Perl_warner(aTHX_ packWARN(WARN_REGEXP), c_in_subst); |
4ac733c9 MJD |
6609 | } |
6610 | ||
79072805 LW |
6611 | if (es) { |
6612 | SV *repl; | |
0244c3a4 GS |
6613 | PL_sublex_info.super_bufptr = s; |
6614 | PL_sublex_info.super_bufend = PL_bufend; | |
6615 | PL_multi_end = 0; | |
79072805 | 6616 | pm->op_pmflags |= PMf_EVAL; |
79cb57f6 | 6617 | repl = newSVpvn("",0); |
463ee0b2 | 6618 | while (es-- > 0) |
a0d0e21e | 6619 | sv_catpv(repl, es ? "eval " : "do "); |
79072805 | 6620 | sv_catpvn(repl, "{ ", 2); |
3280af22 | 6621 | sv_catsv(repl, PL_lex_repl); |
79072805 | 6622 | sv_catpvn(repl, " };", 2); |
25da4f38 | 6623 | SvEVALED_on(repl); |
3280af22 NIS |
6624 | SvREFCNT_dec(PL_lex_repl); |
6625 | PL_lex_repl = repl; | |
378cc40b | 6626 | } |
79072805 | 6627 | |
4633a7c4 | 6628 | pm->op_pmpermflags = pm->op_pmflags; |
3280af22 | 6629 | PL_lex_op = (OP*)pm; |
79072805 | 6630 | yylval.ival = OP_SUBST; |
378cc40b LW |
6631 | return s; |
6632 | } | |
6633 | ||
76e3520e | 6634 | STATIC char * |
cea2e8a9 | 6635 | S_scan_trans(pTHX_ char *start) |
378cc40b | 6636 | { |
a0d0e21e | 6637 | register char* s; |
11343788 | 6638 | OP *o; |
79072805 LW |
6639 | short *tbl; |
6640 | I32 squash; | |
a0ed51b3 | 6641 | I32 del; |
79072805 LW |
6642 | I32 complement; |
6643 | ||
6644 | yylval.ival = OP_NULL; | |
6645 | ||
09bef843 | 6646 | s = scan_str(start,FALSE,FALSE); |
37fd879b | 6647 | if (!s) |
cea2e8a9 | 6648 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
3280af22 | 6649 | if (s[-1] == PL_multi_open) |
2f3197b3 LW |
6650 | s--; |
6651 | ||
09bef843 | 6652 | s = scan_str(s,FALSE,FALSE); |
79072805 | 6653 | if (!s) { |
37fd879b | 6654 | if (PL_lex_stuff) { |
3280af22 | 6655 | SvREFCNT_dec(PL_lex_stuff); |
37fd879b HS |
6656 | PL_lex_stuff = Nullsv; |
6657 | } | |
cea2e8a9 | 6658 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 6659 | } |
79072805 | 6660 | |
a0ed51b3 | 6661 | complement = del = squash = 0; |
6940069f | 6662 | while (strchr("cds", *s)) { |
395c3793 | 6663 | if (*s == 'c') |
79072805 | 6664 | complement = OPpTRANS_COMPLEMENT; |
395c3793 | 6665 | else if (*s == 'd') |
a0ed51b3 LW |
6666 | del = OPpTRANS_DELETE; |
6667 | else if (*s == 's') | |
79072805 | 6668 | squash = OPpTRANS_SQUASH; |
395c3793 LW |
6669 | s++; |
6670 | } | |
8973db79 JH |
6671 | |
6672 | New(803, tbl, complement&&!del?258:256, short); | |
6673 | o = newPVOP(OP_TRANS, 0, (char*)tbl); | |
59f00321 RGS |
6674 | o->op_private &= ~OPpTRANS_ALL; |
6675 | o->op_private |= del|squash|complement| | |
7948272d NIS |
6676 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
6677 | (DO_UTF8(PL_lex_repl) ? OPpTRANS_TO_UTF : 0); | |
79072805 | 6678 | |
3280af22 | 6679 | PL_lex_op = o; |
79072805 LW |
6680 | yylval.ival = OP_TRANS; |
6681 | return s; | |
6682 | } | |
6683 | ||
76e3520e | 6684 | STATIC char * |
cea2e8a9 | 6685 | S_scan_heredoc(pTHX_ register char *s) |
79072805 LW |
6686 | { |
6687 | SV *herewas; | |
6688 | I32 op_type = OP_SCALAR; | |
6689 | I32 len; | |
6690 | SV *tmpstr; | |
6691 | char term; | |
6692 | register char *d; | |
fc36a67e | 6693 | register char *e; |
4633a7c4 | 6694 | char *peek; |
3280af22 | 6695 | int outer = (PL_rsfp && !(PL_lex_inwhat == OP_SCALAR)); |
79072805 LW |
6696 | |
6697 | s += 2; | |
3280af22 NIS |
6698 | d = PL_tokenbuf; |
6699 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; | |
fd2d0953 | 6700 | if (!outer) |
79072805 | 6701 | *d++ = '\n'; |
bf4acbe4 | 6702 | for (peek = s; SPACE_OR_TAB(*peek); peek++) ; |
4633a7c4 LW |
6703 | if (*peek && strchr("`'\"",*peek)) { |
6704 | s = peek; | |
79072805 | 6705 | term = *s++; |
3280af22 | 6706 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
fc36a67e | 6707 | d += len; |
3280af22 | 6708 | if (s < PL_bufend) |
79072805 | 6709 | s++; |
79072805 LW |
6710 | } |
6711 | else { | |
6712 | if (*s == '\\') | |
6713 | s++, term = '\''; | |
6714 | else | |
6715 | term = '"'; | |
7e2040f0 | 6716 | if (!isALNUM_lazy_if(s,UTF)) |
12bcd1a6 | 6717 | deprecate_old("bare << to mean <<\"\""); |
7e2040f0 | 6718 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 6719 | if (d < e) |
6720 | *d++ = *s; | |
6721 | } | |
6722 | } | |
3280af22 | 6723 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 6724 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
6725 | *d++ = '\n'; |
6726 | *d = '\0'; | |
3280af22 | 6727 | len = d - PL_tokenbuf; |
6a27c188 | 6728 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
6729 | d = strchr(s, '\r'); |
6730 | if (d) { | |
6731 | char *olds = s; | |
6732 | s = d; | |
3280af22 | 6733 | while (s < PL_bufend) { |
f63a84b2 LW |
6734 | if (*s == '\r') { |
6735 | *d++ = '\n'; | |
6736 | if (*++s == '\n') | |
6737 | s++; | |
6738 | } | |
6739 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
6740 | *d++ = *s++; | |
6741 | s++; | |
6742 | } | |
6743 | else | |
6744 | *d++ = *s++; | |
6745 | } | |
6746 | *d = '\0'; | |
3280af22 NIS |
6747 | PL_bufend = d; |
6748 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 LW |
6749 | s = olds; |
6750 | } | |
6751 | #endif | |
79072805 | 6752 | d = "\n"; |
3280af22 | 6753 | if (outer || !(d=ninstr(s,PL_bufend,d,d+1))) |
79cb57f6 | 6754 | herewas = newSVpvn(s,PL_bufend-s); |
79072805 | 6755 | else |
79cb57f6 | 6756 | s--, herewas = newSVpvn(s,d-s); |
79072805 | 6757 | s += SvCUR(herewas); |
748a9306 | 6758 | |
8d6dde3e | 6759 | tmpstr = NEWSV(87,79); |
748a9306 LW |
6760 | sv_upgrade(tmpstr, SVt_PVIV); |
6761 | if (term == '\'') { | |
79072805 | 6762 | op_type = OP_CONST; |
748a9306 LW |
6763 | SvIVX(tmpstr) = -1; |
6764 | } | |
6765 | else if (term == '`') { | |
79072805 | 6766 | op_type = OP_BACKTICK; |
748a9306 LW |
6767 | SvIVX(tmpstr) = '\\'; |
6768 | } | |
79072805 LW |
6769 | |
6770 | CLINE; | |
57843af0 | 6771 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 NIS |
6772 | PL_multi_open = PL_multi_close = '<'; |
6773 | term = *PL_tokenbuf; | |
0244c3a4 GS |
6774 | if (PL_lex_inwhat == OP_SUBST && PL_in_eval && !PL_rsfp) { |
6775 | char *bufptr = PL_sublex_info.super_bufptr; | |
6776 | char *bufend = PL_sublex_info.super_bufend; | |
6777 | char *olds = s - SvCUR(herewas); | |
6778 | s = strchr(bufptr, '\n'); | |
6779 | if (!s) | |
6780 | s = bufend; | |
6781 | d = s; | |
6782 | while (s < bufend && | |
6783 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
6784 | if (*s++ == '\n') | |
57843af0 | 6785 | CopLINE_inc(PL_curcop); |
0244c3a4 GS |
6786 | } |
6787 | if (s >= bufend) { | |
eb160463 | 6788 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
0244c3a4 GS |
6789 | missingterm(PL_tokenbuf); |
6790 | } | |
6791 | sv_setpvn(herewas,bufptr,d-bufptr+1); | |
6792 | sv_setpvn(tmpstr,d+1,s-d); | |
6793 | s += len - 1; | |
6794 | sv_catpvn(herewas,s,bufend-s); | |
689badd5 | 6795 | Copy(SvPVX(herewas),bufptr,SvCUR(herewas) + 1,char); |
0244c3a4 GS |
6796 | |
6797 | s = olds; | |
6798 | goto retval; | |
6799 | } | |
6800 | else if (!outer) { | |
79072805 | 6801 | d = s; |
3280af22 NIS |
6802 | while (s < PL_bufend && |
6803 | (*s != term || memNE(s,PL_tokenbuf,len)) ) { | |
79072805 | 6804 | if (*s++ == '\n') |
57843af0 | 6805 | CopLINE_inc(PL_curcop); |
79072805 | 6806 | } |
3280af22 | 6807 | if (s >= PL_bufend) { |
eb160463 | 6808 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6809 | missingterm(PL_tokenbuf); |
79072805 LW |
6810 | } |
6811 | sv_setpvn(tmpstr,d+1,s-d); | |
6812 | s += len - 1; | |
57843af0 | 6813 | CopLINE_inc(PL_curcop); /* the preceding stmt passes a newline */ |
49d8d3a1 | 6814 | |
3280af22 NIS |
6815 | sv_catpvn(herewas,s,PL_bufend-s); |
6816 | sv_setsv(PL_linestr,herewas); | |
6817 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart = SvPVX(PL_linestr); | |
6818 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 6819 | PL_last_lop = PL_last_uni = Nullch; |
79072805 LW |
6820 | } |
6821 | else | |
6822 | sv_setpvn(tmpstr,"",0); /* avoid "uninitialized" warning */ | |
3280af22 | 6823 | while (s >= PL_bufend) { /* multiple line string? */ |
fd2d0953 | 6824 | if (!outer || |
3280af22 | 6825 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { |
eb160463 | 6826 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
3280af22 | 6827 | missingterm(PL_tokenbuf); |
79072805 | 6828 | } |
57843af0 | 6829 | CopLINE_inc(PL_curcop); |
3280af22 | 6830 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
207e3d1a | 6831 | PL_last_lop = PL_last_uni = Nullch; |
6a27c188 | 6832 | #ifndef PERL_STRICT_CR |
3280af22 | 6833 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
6834 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
6835 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 6836 | { |
3280af22 NIS |
6837 | PL_bufend[-2] = '\n'; |
6838 | PL_bufend--; | |
6839 | SvCUR_set(PL_linestr, PL_bufend - SvPVX(PL_linestr)); | |
f63a84b2 | 6840 | } |
3280af22 NIS |
6841 | else if (PL_bufend[-1] == '\r') |
6842 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6843 | } |
3280af22 NIS |
6844 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
6845 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 6846 | #endif |
3280af22 | 6847 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
6848 | SV *sv = NEWSV(88,0); |
6849 | ||
93a17b20 | 6850 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 6851 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
6852 | (void)SvIOK_on(sv); |
6853 | SvIVX(sv) = 0; | |
57843af0 | 6854 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop),sv); |
79072805 | 6855 | } |
3280af22 | 6856 | if (*s == term && memEQ(s,PL_tokenbuf,len)) { |
1de9afcd RGS |
6857 | STRLEN off = PL_bufend - 1 - SvPVX(PL_linestr); |
6858 | *(SvPVX(PL_linestr) + off ) = ' '; | |
3280af22 NIS |
6859 | sv_catsv(PL_linestr,herewas); |
6860 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
1de9afcd | 6861 | s = SvPVX(PL_linestr) + off; /* In case PV of PL_linestr moved. */ |
79072805 LW |
6862 | } |
6863 | else { | |
3280af22 NIS |
6864 | s = PL_bufend; |
6865 | sv_catsv(tmpstr,PL_linestr); | |
395c3793 LW |
6866 | } |
6867 | } | |
79072805 | 6868 | s++; |
0244c3a4 | 6869 | retval: |
57843af0 | 6870 | PL_multi_end = CopLINE(PL_curcop); |
79072805 LW |
6871 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
6872 | SvLEN_set(tmpstr, SvCUR(tmpstr) + 1); | |
463ee0b2 | 6873 | Renew(SvPVX(tmpstr), SvLEN(tmpstr), char); |
79072805 | 6874 | } |
8990e307 | 6875 | SvREFCNT_dec(herewas); |
2f31ce75 JH |
6876 | if (!IN_BYTES) { |
6877 | if (UTF && is_utf8_string((U8*)SvPVX(tmpstr), SvCUR(tmpstr))) | |
6878 | SvUTF8_on(tmpstr); | |
6879 | else if (PL_encoding) | |
6880 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
6881 | } | |
3280af22 | 6882 | PL_lex_stuff = tmpstr; |
79072805 LW |
6883 | yylval.ival = op_type; |
6884 | return s; | |
6885 | } | |
6886 | ||
02aa26ce NT |
6887 | /* scan_inputsymbol |
6888 | takes: current position in input buffer | |
6889 | returns: new position in input buffer | |
6890 | side-effects: yylval and lex_op are set. | |
6891 | ||
6892 | This code handles: | |
6893 | ||
6894 | <> read from ARGV | |
6895 | <FH> read from filehandle | |
6896 | <pkg::FH> read from package qualified filehandle | |
6897 | <pkg'FH> read from package qualified filehandle | |
6898 | <$fh> read from filehandle in $fh | |
6899 | <*.h> filename glob | |
6900 | ||
6901 | */ | |
6902 | ||
76e3520e | 6903 | STATIC char * |
cea2e8a9 | 6904 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 6905 | { |
02aa26ce | 6906 | register char *s = start; /* current position in buffer */ |
79072805 | 6907 | register char *d; |
fc36a67e | 6908 | register char *e; |
1b420867 | 6909 | char *end; |
79072805 LW |
6910 | I32 len; |
6911 | ||
3280af22 NIS |
6912 | d = PL_tokenbuf; /* start of temp holding space */ |
6913 | e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
1b420867 GS |
6914 | end = strchr(s, '\n'); |
6915 | if (!end) | |
6916 | end = PL_bufend; | |
6917 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
6918 | |
6919 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 6920 | or if it didn't end, or if we see a newline |
02aa26ce NT |
6921 | */ |
6922 | ||
3280af22 | 6923 | if (len >= sizeof PL_tokenbuf) |
cea2e8a9 | 6924 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 6925 | if (s >= end) |
cea2e8a9 | 6926 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 6927 | |
fc36a67e | 6928 | s++; |
02aa26ce NT |
6929 | |
6930 | /* check for <$fh> | |
6931 | Remember, only scalar variables are interpreted as filehandles by | |
6932 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
6933 | treated as a glob() call. | |
6934 | This code makes use of the fact that except for the $ at the front, | |
6935 | a scalar variable and a filehandle look the same. | |
6936 | */ | |
4633a7c4 | 6937 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
6938 | |
6939 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 6940 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
79072805 | 6941 | d++; |
02aa26ce NT |
6942 | |
6943 | /* If we've tried to read what we allow filehandles to look like, and | |
6944 | there's still text left, then it must be a glob() and not a getline. | |
6945 | Use scan_str to pull out the stuff between the <> and treat it | |
6946 | as nothing more than a string. | |
6947 | */ | |
6948 | ||
3280af22 | 6949 | if (d - PL_tokenbuf != len) { |
79072805 LW |
6950 | yylval.ival = OP_GLOB; |
6951 | set_csh(); | |
09bef843 | 6952 | s = scan_str(start,FALSE,FALSE); |
79072805 | 6953 | if (!s) |
cea2e8a9 | 6954 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
6955 | return s; |
6956 | } | |
395c3793 | 6957 | else { |
9b3023bc RGS |
6958 | bool readline_overriden = FALSE; |
6959 | GV *gv_readline = Nullgv; | |
6960 | GV **gvp; | |
02aa26ce | 6961 | /* we're in a filehandle read situation */ |
3280af22 | 6962 | d = PL_tokenbuf; |
02aa26ce NT |
6963 | |
6964 | /* turn <> into <ARGV> */ | |
79072805 | 6965 | if (!len) |
689badd5 | 6966 | Copy("ARGV",d,5,char); |
02aa26ce | 6967 | |
9b3023bc | 6968 | /* Check whether readline() is overriden */ |
ba979b31 NIS |
6969 | if (((gv_readline = gv_fetchpv("readline", FALSE, SVt_PVCV)) |
6970 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) | |
9b3023bc | 6971 | || |
ba979b31 | 6972 | ((gvp = (GV**)hv_fetch(PL_globalstash, "readline", 8, FALSE)) |
9b3023bc | 6973 | && (gv_readline = *gvp) != (GV*)&PL_sv_undef |
ba979b31 | 6974 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
6975 | readline_overriden = TRUE; |
6976 | ||
02aa26ce NT |
6977 | /* if <$fh>, create the ops to turn the variable into a |
6978 | filehandle | |
6979 | */ | |
79072805 | 6980 | if (*d == '$') { |
a0d0e21e | 6981 | I32 tmp; |
02aa26ce NT |
6982 | |
6983 | /* try to find it in the pad for this block, otherwise find | |
6984 | add symbol table ops | |
6985 | */ | |
11343788 | 6986 | if ((tmp = pad_findmy(d)) != NOT_IN_PAD) { |
dd2155a4 DM |
6987 | if (PAD_COMPNAME_FLAGS(tmp) & SVpad_OUR) { |
6988 | SV *sym = sv_2mortal( | |
6989 | newSVpv(HvNAME(PAD_COMPNAME_OURSTASH(tmp)),0)); | |
f558d5af JH |
6990 | sv_catpvn(sym, "::", 2); |
6991 | sv_catpv(sym, d+1); | |
6992 | d = SvPVX(sym); | |
6993 | goto intro_sym; | |
6994 | } | |
6995 | else { | |
6996 | OP *o = newOP(OP_PADSV, 0); | |
6997 | o->op_targ = tmp; | |
9b3023bc RGS |
6998 | PL_lex_op = readline_overriden |
6999 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7000 | append_elem(OP_LIST, o, | |
7001 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) | |
7002 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 7003 | } |
a0d0e21e LW |
7004 | } |
7005 | else { | |
f558d5af JH |
7006 | GV *gv; |
7007 | ++d; | |
7008 | intro_sym: | |
7009 | gv = gv_fetchpv(d, | |
7010 | (PL_in_eval | |
7011 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
bea70d1e | 7012 | : GV_ADDMULTI), |
f558d5af | 7013 | SVt_PV); |
9b3023bc RGS |
7014 | PL_lex_op = readline_overriden |
7015 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7016 | append_elem(OP_LIST, | |
7017 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), | |
7018 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7019 | : (OP*)newUNOP(OP_READLINE, 0, | |
7020 | newUNOP(OP_RV2SV, 0, | |
7021 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 7022 | } |
7c6fadd6 RGS |
7023 | if (!readline_overriden) |
7024 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
f5284f61 | 7025 | /* we created the ops in PL_lex_op, so make yylval.ival a null op */ |
79072805 LW |
7026 | yylval.ival = OP_NULL; |
7027 | } | |
02aa26ce NT |
7028 | |
7029 | /* If it's none of the above, it must be a literal filehandle | |
7030 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 7031 | else { |
85e6fe83 | 7032 | GV *gv = gv_fetchpv(d,TRUE, SVt_PVIO); |
9b3023bc RGS |
7033 | PL_lex_op = readline_overriden |
7034 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
7035 | append_elem(OP_LIST, | |
7036 | newGVOP(OP_GV, 0, gv), | |
7037 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
7038 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
79072805 LW |
7039 | yylval.ival = OP_NULL; |
7040 | } | |
7041 | } | |
02aa26ce | 7042 | |
79072805 LW |
7043 | return s; |
7044 | } | |
7045 | ||
02aa26ce NT |
7046 | |
7047 | /* scan_str | |
7048 | takes: start position in buffer | |
09bef843 SB |
7049 | keep_quoted preserve \ on the embedded delimiter(s) |
7050 | keep_delims preserve the delimiters around the string | |
02aa26ce NT |
7051 | returns: position to continue reading from buffer |
7052 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
7053 | updates the read buffer. | |
7054 | ||
7055 | This subroutine pulls a string out of the input. It is called for: | |
7056 | q single quotes q(literal text) | |
7057 | ' single quotes 'literal text' | |
7058 | qq double quotes qq(interpolate $here please) | |
7059 | " double quotes "interpolate $here please" | |
7060 | qx backticks qx(/bin/ls -l) | |
7061 | ` backticks `/bin/ls -l` | |
7062 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
7063 | m// regexp match m/this/ | |
7064 | s/// regexp substitute s/this/that/ | |
7065 | tr/// string transliterate tr/this/that/ | |
7066 | y/// string transliterate y/this/that/ | |
7067 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 7068 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
7069 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
7070 | ||
7071 | In most of these cases (all but <>, patterns and transliterate) | |
7072 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
7073 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
7074 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
7075 | calls scan_str(). | |
4e553d73 | 7076 | |
02aa26ce NT |
7077 | It skips whitespace before the string starts, and treats the first |
7078 | character as the delimiter. If the delimiter is one of ([{< then | |
7079 | the corresponding "close" character )]}> is used as the closing | |
7080 | delimiter. It allows quoting of delimiters, and if the string has | |
7081 | balanced delimiters ([{<>}]) it allows nesting. | |
7082 | ||
37fd879b HS |
7083 | On success, the SV with the resulting string is put into lex_stuff or, |
7084 | if that is already non-NULL, into lex_repl. The second case occurs only | |
7085 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
7086 | For convenience, the terminating delimiter character is stuffed into | |
7087 | SvIVX of the SV. | |
02aa26ce NT |
7088 | */ |
7089 | ||
76e3520e | 7090 | STATIC char * |
09bef843 | 7091 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims) |
79072805 | 7092 | { |
02aa26ce NT |
7093 | SV *sv; /* scalar value: string */ |
7094 | char *tmps; /* temp string, used for delimiter matching */ | |
7095 | register char *s = start; /* current position in the buffer */ | |
7096 | register char term; /* terminating character */ | |
7097 | register char *to; /* current position in the sv's data */ | |
7098 | I32 brackets = 1; /* bracket nesting level */ | |
89491803 | 7099 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e IH |
7100 | I32 termcode; /* terminating char. code */ |
7101 | U8 termstr[UTF8_MAXLEN]; /* terminating string */ | |
7102 | STRLEN termlen; /* length of terminating string */ | |
7103 | char *last = NULL; /* last position for nesting bracket */ | |
02aa26ce NT |
7104 | |
7105 | /* skip space before the delimiter */ | |
fb73857a | 7106 | if (isSPACE(*s)) |
7107 | s = skipspace(s); | |
02aa26ce NT |
7108 | |
7109 | /* mark where we are, in case we need to report errors */ | |
79072805 | 7110 | CLINE; |
02aa26ce NT |
7111 | |
7112 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 7113 | term = *s; |
220e2d4e IH |
7114 | if (!UTF) { |
7115 | termcode = termstr[0] = term; | |
7116 | termlen = 1; | |
7117 | } | |
7118 | else { | |
f3b9ce0f | 7119 | termcode = utf8_to_uvchr((U8*)s, &termlen); |
220e2d4e IH |
7120 | Copy(s, termstr, termlen, U8); |
7121 | if (!UTF8_IS_INVARIANT(term)) | |
7122 | has_utf8 = TRUE; | |
7123 | } | |
b1c7b182 | 7124 | |
02aa26ce | 7125 | /* mark where we are */ |
57843af0 | 7126 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 7127 | PL_multi_open = term; |
02aa26ce NT |
7128 | |
7129 | /* find corresponding closing delimiter */ | |
93a17b20 | 7130 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
7131 | termcode = termstr[0] = term = tmps[5]; |
7132 | ||
3280af22 | 7133 | PL_multi_close = term; |
79072805 | 7134 | |
02aa26ce | 7135 | /* create a new SV to hold the contents. 87 is leak category, I'm |
8d6dde3e IZ |
7136 | assuming. 79 is the SV's initial length. What a random number. */ |
7137 | sv = NEWSV(87,79); | |
ed6116ce | 7138 | sv_upgrade(sv, SVt_PVIV); |
220e2d4e | 7139 | SvIVX(sv) = termcode; |
a0d0e21e | 7140 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
7141 | |
7142 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 7143 | if (keep_delims) |
220e2d4e IH |
7144 | sv_catpvn(sv, s, termlen); |
7145 | s += termlen; | |
93a17b20 | 7146 | for (;;) { |
220e2d4e IH |
7147 | if (PL_encoding && !UTF) { |
7148 | bool cont = TRUE; | |
7149 | ||
7150 | while (cont) { | |
7151 | int offset = s - SvPVX(PL_linestr); | |
7152 | bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, | |
f3b9ce0f | 7153 | &offset, (char*)termstr, termlen); |
220e2d4e IH |
7154 | char *ns = SvPVX(PL_linestr) + offset; |
7155 | char *svlast = SvEND(sv) - 1; | |
7156 | ||
7157 | for (; s < ns; s++) { | |
7158 | if (*s == '\n' && !PL_rsfp) | |
7159 | CopLINE_inc(PL_curcop); | |
7160 | } | |
7161 | if (!found) | |
7162 | goto read_more_line; | |
7163 | else { | |
7164 | /* handle quoted delimiters */ | |
52327caf | 7165 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
220e2d4e IH |
7166 | char *t; |
7167 | for (t = svlast-2; t >= SvPVX(sv) && *t == '\\';) | |
7168 | t--; | |
7169 | if ((svlast-1 - t) % 2) { | |
7170 | if (!keep_quoted) { | |
7171 | *(svlast-1) = term; | |
7172 | *svlast = '\0'; | |
7173 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7174 | } | |
7175 | continue; | |
7176 | } | |
7177 | } | |
7178 | if (PL_multi_open == PL_multi_close) { | |
7179 | cont = FALSE; | |
7180 | } | |
7181 | else { | |
7182 | char *t, *w; | |
7183 | if (!last) | |
7184 | last = SvPVX(sv); | |
7185 | for (w = t = last; t < svlast; w++, t++) { | |
7186 | /* At here, all closes are "was quoted" one, | |
7187 | so we don't check PL_multi_close. */ | |
7188 | if (*t == '\\') { | |
7189 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
7190 | t++; | |
7191 | else | |
7192 | *w++ = *t++; | |
7193 | } | |
7194 | else if (*t == PL_multi_open) | |
7195 | brackets++; | |
7196 | ||
7197 | *w = *t; | |
7198 | } | |
7199 | if (w < t) { | |
7200 | *w++ = term; | |
7201 | *w = '\0'; | |
7202 | SvCUR_set(sv, w - SvPVX(sv)); | |
7203 | } | |
7204 | last = w; | |
7205 | if (--brackets <= 0) | |
7206 | cont = FALSE; | |
7207 | } | |
7208 | } | |
7209 | } | |
7210 | if (!keep_delims) { | |
7211 | SvCUR_set(sv, SvCUR(sv) - 1); | |
7212 | *SvEND(sv) = '\0'; | |
7213 | } | |
7214 | break; | |
7215 | } | |
7216 | ||
02aa26ce | 7217 | /* extend sv if need be */ |
3280af22 | 7218 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 7219 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 7220 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 7221 | |
02aa26ce | 7222 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
7223 | if (PL_multi_open == PL_multi_close) { |
7224 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 7225 | /* embedded newlines increment the current line number */ |
3280af22 | 7226 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7227 | CopLINE_inc(PL_curcop); |
02aa26ce | 7228 | /* handle quoted delimiters */ |
3280af22 | 7229 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
09bef843 | 7230 | if (!keep_quoted && s[1] == term) |
a0d0e21e | 7231 | s++; |
02aa26ce | 7232 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
7233 | else |
7234 | *to++ = *s++; | |
7235 | } | |
02aa26ce NT |
7236 | /* terminate when run out of buffer (the for() condition), or |
7237 | have found the terminator */ | |
220e2d4e IH |
7238 | else if (*s == term) { |
7239 | if (termlen == 1) | |
7240 | break; | |
f3b9ce0f | 7241 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
7242 | break; |
7243 | } | |
63cd0674 | 7244 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7245 | has_utf8 = TRUE; |
93a17b20 LW |
7246 | *to = *s; |
7247 | } | |
7248 | } | |
02aa26ce NT |
7249 | |
7250 | /* if the terminator isn't the same as the start character (e.g., | |
7251 | matched brackets), we have to allow more in the quoting, and | |
7252 | be prepared for nested brackets. | |
7253 | */ | |
93a17b20 | 7254 | else { |
02aa26ce | 7255 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 7256 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 7257 | /* embedded newlines increment the line count */ |
3280af22 | 7258 | if (*s == '\n' && !PL_rsfp) |
57843af0 | 7259 | CopLINE_inc(PL_curcop); |
02aa26ce | 7260 | /* backslashes can escape the open or closing characters */ |
3280af22 | 7261 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
7262 | if (!keep_quoted && |
7263 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
7264 | s++; |
7265 | else | |
7266 | *to++ = *s++; | |
7267 | } | |
02aa26ce | 7268 | /* allow nested opens and closes */ |
3280af22 | 7269 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 7270 | break; |
3280af22 | 7271 | else if (*s == PL_multi_open) |
93a17b20 | 7272 | brackets++; |
63cd0674 | 7273 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 7274 | has_utf8 = TRUE; |
93a17b20 LW |
7275 | *to = *s; |
7276 | } | |
7277 | } | |
02aa26ce | 7278 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 7279 | *to = '\0'; |
463ee0b2 | 7280 | SvCUR_set(sv, to - SvPVX(sv)); |
93a17b20 | 7281 | |
02aa26ce NT |
7282 | /* |
7283 | * this next chunk reads more into the buffer if we're not done yet | |
7284 | */ | |
7285 | ||
b1c7b182 GS |
7286 | if (s < PL_bufend) |
7287 | break; /* handle case where we are done yet :-) */ | |
79072805 | 7288 | |
6a27c188 | 7289 | #ifndef PERL_STRICT_CR |
f63a84b2 | 7290 | if (to - SvPVX(sv) >= 2) { |
c6f14548 GS |
7291 | if ((to[-2] == '\r' && to[-1] == '\n') || |
7292 | (to[-2] == '\n' && to[-1] == '\r')) | |
7293 | { | |
f63a84b2 LW |
7294 | to[-2] = '\n'; |
7295 | to--; | |
7296 | SvCUR_set(sv, to - SvPVX(sv)); | |
7297 | } | |
7298 | else if (to[-1] == '\r') | |
7299 | to[-1] = '\n'; | |
7300 | } | |
7301 | else if (to - SvPVX(sv) == 1 && to[-1] == '\r') | |
7302 | to[-1] = '\n'; | |
7303 | #endif | |
7304 | ||
220e2d4e | 7305 | read_more_line: |
02aa26ce NT |
7306 | /* if we're out of file, or a read fails, bail and reset the current |
7307 | line marker so we can report where the unterminated string began | |
7308 | */ | |
3280af22 NIS |
7309 | if (!PL_rsfp || |
7310 | !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = filter_gets(PL_linestr, PL_rsfp, 0))) { | |
c07a80fd | 7311 | sv_free(sv); |
eb160463 | 7312 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
79072805 LW |
7313 | return Nullch; |
7314 | } | |
02aa26ce | 7315 | /* we read a line, so increment our line counter */ |
57843af0 | 7316 | CopLINE_inc(PL_curcop); |
a0ed51b3 | 7317 | |
02aa26ce | 7318 | /* update debugger info */ |
3280af22 | 7319 | if (PERLDB_LINE && PL_curstash != PL_debstash) { |
79072805 LW |
7320 | SV *sv = NEWSV(88,0); |
7321 | ||
93a17b20 | 7322 | sv_upgrade(sv, SVt_PVMG); |
3280af22 | 7323 | sv_setsv(sv,PL_linestr); |
0ac0412a MJD |
7324 | (void)SvIOK_on(sv); |
7325 | SvIVX(sv) = 0; | |
57843af0 | 7326 | av_store(CopFILEAV(PL_curcop), (I32)CopLINE(PL_curcop), sv); |
395c3793 | 7327 | } |
a0ed51b3 | 7328 | |
3280af22 NIS |
7329 | /* having changed the buffer, we must update PL_bufend */ |
7330 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
207e3d1a | 7331 | PL_last_lop = PL_last_uni = Nullch; |
378cc40b | 7332 | } |
4e553d73 | 7333 | |
02aa26ce NT |
7334 | /* at this point, we have successfully read the delimited string */ |
7335 | ||
220e2d4e IH |
7336 | if (!PL_encoding || UTF) { |
7337 | if (keep_delims) | |
7338 | sv_catpvn(sv, s, termlen); | |
7339 | s += termlen; | |
7340 | } | |
7341 | if (has_utf8 || PL_encoding) | |
b1c7b182 | 7342 | SvUTF8_on(sv); |
d0063567 | 7343 | |
57843af0 | 7344 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
7345 | |
7346 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
7347 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
7348 | SvLEN_set(sv, SvCUR(sv) + 1); | |
463ee0b2 | 7349 | Renew(SvPVX(sv), SvLEN(sv), char); |
79072805 | 7350 | } |
02aa26ce NT |
7351 | |
7352 | /* decide whether this is the first or second quoted string we've read | |
7353 | for this op | |
7354 | */ | |
4e553d73 | 7355 | |
3280af22 NIS |
7356 | if (PL_lex_stuff) |
7357 | PL_lex_repl = sv; | |
79072805 | 7358 | else |
3280af22 | 7359 | PL_lex_stuff = sv; |
378cc40b LW |
7360 | return s; |
7361 | } | |
7362 | ||
02aa26ce NT |
7363 | /* |
7364 | scan_num | |
7365 | takes: pointer to position in buffer | |
7366 | returns: pointer to new position in buffer | |
7367 | side-effects: builds ops for the constant in yylval.op | |
7368 | ||
7369 | Read a number in any of the formats that Perl accepts: | |
7370 | ||
7fd134d9 JH |
7371 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
7372 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
7373 | 0b[01](_?[01])* |
7374 | 0[0-7](_?[0-7])* | |
7375 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 7376 | |
3280af22 | 7377 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
7378 | thing it reads. |
7379 | ||
7380 | If it reads a number without a decimal point or an exponent, it will | |
7381 | try converting the number to an integer and see if it can do so | |
7382 | without loss of precision. | |
7383 | */ | |
4e553d73 | 7384 | |
378cc40b | 7385 | char * |
b73d6f50 | 7386 | Perl_scan_num(pTHX_ char *start, YYSTYPE* lvalp) |
378cc40b | 7387 | { |
02aa26ce NT |
7388 | register char *s = start; /* current position in buffer */ |
7389 | register char *d; /* destination in temp buffer */ | |
7390 | register char *e; /* end of temp buffer */ | |
86554af2 | 7391 | NV nv; /* number read, as a double */ |
a7cb1f99 | 7392 | SV *sv = Nullsv; /* place to put the converted number */ |
a86a20aa | 7393 | bool floatit; /* boolean: int or float? */ |
02aa26ce | 7394 | char *lastub = 0; /* position of last underbar */ |
fc36a67e | 7395 | static char number_too_long[] = "Number too long"; |
378cc40b | 7396 | |
02aa26ce NT |
7397 | /* We use the first character to decide what type of number this is */ |
7398 | ||
378cc40b | 7399 | switch (*s) { |
79072805 | 7400 | default: |
cea2e8a9 | 7401 | Perl_croak(aTHX_ "panic: scan_num"); |
4e553d73 | 7402 | |
02aa26ce | 7403 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 7404 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
7405 | case '0': |
7406 | { | |
02aa26ce NT |
7407 | /* variables: |
7408 | u holds the "number so far" | |
4f19785b WSI |
7409 | shift the power of 2 of the base |
7410 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
7411 | overflowed was the number more than we can hold? |
7412 | ||
7413 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
7414 | we in octal/hex/binary?" indicator to disallow hex characters |
7415 | when in octal mode. | |
02aa26ce | 7416 | */ |
9e24b6e2 JH |
7417 | NV n = 0.0; |
7418 | UV u = 0; | |
79072805 | 7419 | I32 shift; |
9e24b6e2 | 7420 | bool overflowed = FALSE; |
61f33854 | 7421 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
9e24b6e2 JH |
7422 | static NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
7423 | static char* bases[5] = { "", "binary", "", "octal", | |
7424 | "hexadecimal" }; | |
7425 | static char* Bases[5] = { "", "Binary", "", "Octal", | |
7426 | "Hexadecimal" }; | |
7427 | static char *maxima[5] = { "", | |
7428 | "0b11111111111111111111111111111111", | |
7429 | "", | |
893fe2c2 | 7430 | "037777777777", |
9e24b6e2 JH |
7431 | "0xffffffff" }; |
7432 | char *base, *Base, *max; | |
378cc40b | 7433 | |
02aa26ce | 7434 | /* check for hex */ |
378cc40b LW |
7435 | if (s[1] == 'x') { |
7436 | shift = 4; | |
7437 | s += 2; | |
61f33854 | 7438 | just_zero = FALSE; |
4f19785b WSI |
7439 | } else if (s[1] == 'b') { |
7440 | shift = 1; | |
7441 | s += 2; | |
61f33854 | 7442 | just_zero = FALSE; |
378cc40b | 7443 | } |
02aa26ce | 7444 | /* check for a decimal in disguise */ |
b78218b7 | 7445 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 7446 | goto decimal; |
02aa26ce | 7447 | /* so it must be octal */ |
928753ea | 7448 | else { |
378cc40b | 7449 | shift = 3; |
928753ea JH |
7450 | s++; |
7451 | } | |
7452 | ||
7453 | if (*s == '_') { | |
7454 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7455 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7456 | "Misplaced _ in number"); |
7457 | lastub = s++; | |
7458 | } | |
9e24b6e2 JH |
7459 | |
7460 | base = bases[shift]; | |
7461 | Base = Bases[shift]; | |
7462 | max = maxima[shift]; | |
02aa26ce | 7463 | |
4f19785b | 7464 | /* read the rest of the number */ |
378cc40b | 7465 | for (;;) { |
9e24b6e2 | 7466 | /* x is used in the overflow test, |
893fe2c2 | 7467 | b is the digit we're adding on. */ |
9e24b6e2 | 7468 | UV x, b; |
55497cff | 7469 | |
378cc40b | 7470 | switch (*s) { |
02aa26ce NT |
7471 | |
7472 | /* if we don't mention it, we're done */ | |
378cc40b LW |
7473 | default: |
7474 | goto out; | |
02aa26ce | 7475 | |
928753ea | 7476 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 7477 | case '_': |
928753ea | 7478 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7479 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7480 | "Misplaced _ in number"); |
7481 | lastub = s++; | |
de3bb511 | 7482 | break; |
02aa26ce NT |
7483 | |
7484 | /* 8 and 9 are not octal */ | |
378cc40b | 7485 | case '8': case '9': |
4f19785b | 7486 | if (shift == 3) |
cea2e8a9 | 7487 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 7488 | /* FALL THROUGH */ |
02aa26ce NT |
7489 | |
7490 | /* octal digits */ | |
4f19785b | 7491 | case '2': case '3': case '4': |
378cc40b | 7492 | case '5': case '6': case '7': |
4f19785b | 7493 | if (shift == 1) |
cea2e8a9 | 7494 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
7495 | /* FALL THROUGH */ |
7496 | ||
7497 | case '0': case '1': | |
02aa26ce | 7498 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 7499 | goto digit; |
02aa26ce NT |
7500 | |
7501 | /* hex digits */ | |
378cc40b LW |
7502 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
7503 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 7504 | /* make sure they said 0x */ |
378cc40b LW |
7505 | if (shift != 4) |
7506 | goto out; | |
55497cff | 7507 | b = (*s++ & 7) + 9; |
02aa26ce NT |
7508 | |
7509 | /* Prepare to put the digit we have onto the end | |
7510 | of the number so far. We check for overflows. | |
7511 | */ | |
7512 | ||
55497cff | 7513 | digit: |
61f33854 | 7514 | just_zero = FALSE; |
9e24b6e2 JH |
7515 | if (!overflowed) { |
7516 | x = u << shift; /* make room for the digit */ | |
7517 | ||
7518 | if ((x >> shift) != u | |
7519 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
7520 | overflowed = TRUE; |
7521 | n = (NV) u; | |
767a6a26 | 7522 | if (ckWARN_d(WARN_OVERFLOW)) |
9014280d | 7523 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), |
9e24b6e2 JH |
7524 | "Integer overflow in %s number", |
7525 | base); | |
7526 | } else | |
7527 | u = x | b; /* add the digit to the end */ | |
7528 | } | |
7529 | if (overflowed) { | |
7530 | n *= nvshift[shift]; | |
7531 | /* If an NV has not enough bits in its | |
7532 | * mantissa to represent an UV this summing of | |
7533 | * small low-order numbers is a waste of time | |
7534 | * (because the NV cannot preserve the | |
7535 | * low-order bits anyway): we could just | |
7536 | * remember when did we overflow and in the | |
7537 | * end just multiply n by the right | |
7538 | * amount. */ | |
7539 | n += (NV) b; | |
55497cff | 7540 | } |
378cc40b LW |
7541 | break; |
7542 | } | |
7543 | } | |
02aa26ce NT |
7544 | |
7545 | /* if we get here, we had success: make a scalar value from | |
7546 | the number. | |
7547 | */ | |
378cc40b | 7548 | out: |
928753ea JH |
7549 | |
7550 | /* final misplaced underbar check */ | |
7551 | if (s[-1] == '_') { | |
7552 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7553 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
7554 | } |
7555 | ||
79072805 | 7556 | sv = NEWSV(92,0); |
9e24b6e2 | 7557 | if (overflowed) { |
767a6a26 | 7558 | if (ckWARN(WARN_PORTABLE) && n > 4294967295.0) |
9014280d | 7559 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7560 | "%s number > %s non-portable", |
7561 | Base, max); | |
7562 | sv_setnv(sv, n); | |
7563 | } | |
7564 | else { | |
15041a67 | 7565 | #if UVSIZE > 4 |
767a6a26 | 7566 | if (ckWARN(WARN_PORTABLE) && u > 0xffffffff) |
9014280d | 7567 | Perl_warner(aTHX_ packWARN(WARN_PORTABLE), |
9e24b6e2 JH |
7568 | "%s number > %s non-portable", |
7569 | Base, max); | |
2cc4c2dc | 7570 | #endif |
9e24b6e2 JH |
7571 | sv_setuv(sv, u); |
7572 | } | |
61f33854 RGS |
7573 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
7574 | sv = new_constant(start, s - start, "integer", | |
7575 | sv, Nullsv, NULL); | |
7576 | else if (PL_hints & HINT_NEW_BINARY) | |
b3ac6de7 | 7577 | sv = new_constant(start, s - start, "binary", sv, Nullsv, NULL); |
378cc40b LW |
7578 | } |
7579 | break; | |
02aa26ce NT |
7580 | |
7581 | /* | |
7582 | handle decimal numbers. | |
7583 | we're also sent here when we read a 0 as the first digit | |
7584 | */ | |
378cc40b LW |
7585 | case '1': case '2': case '3': case '4': case '5': |
7586 | case '6': case '7': case '8': case '9': case '.': | |
7587 | decimal: | |
3280af22 NIS |
7588 | d = PL_tokenbuf; |
7589 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 7590 | floatit = FALSE; |
02aa26ce NT |
7591 | |
7592 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 7593 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 7594 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
7595 | if -w is on |
7596 | */ | |
93a17b20 | 7597 | if (*s == '_') { |
928753ea | 7598 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) |
9014280d | 7599 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7600 | "Misplaced _ in number"); |
7601 | lastub = s++; | |
93a17b20 | 7602 | } |
fc36a67e | 7603 | else { |
02aa26ce | 7604 | /* check for end of fixed-length buffer */ |
fc36a67e | 7605 | if (d >= e) |
cea2e8a9 | 7606 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 7607 | /* if we're ok, copy the character */ |
378cc40b | 7608 | *d++ = *s++; |
fc36a67e | 7609 | } |
378cc40b | 7610 | } |
02aa26ce NT |
7611 | |
7612 | /* final misplaced underbar check */ | |
928753ea | 7613 | if (lastub && s == lastub + 1) { |
d008e5eb | 7614 | if (ckWARN(WARN_SYNTAX)) |
9014280d | 7615 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 7616 | } |
02aa26ce NT |
7617 | |
7618 | /* read a decimal portion if there is one. avoid | |
7619 | 3..5 being interpreted as the number 3. followed | |
7620 | by .5 | |
7621 | */ | |
2f3197b3 | 7622 | if (*s == '.' && s[1] != '.') { |
79072805 | 7623 | floatit = TRUE; |
378cc40b | 7624 | *d++ = *s++; |
02aa26ce | 7625 | |
928753ea JH |
7626 | if (*s == '_') { |
7627 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7628 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7629 | "Misplaced _ in number"); |
7630 | lastub = s; | |
7631 | } | |
7632 | ||
7633 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 7634 | */ |
fc36a67e | 7635 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 7636 | /* fixed length buffer check */ |
fc36a67e | 7637 | if (d >= e) |
cea2e8a9 | 7638 | Perl_croak(aTHX_ number_too_long); |
928753ea JH |
7639 | if (*s == '_') { |
7640 | if (ckWARN(WARN_SYNTAX) && lastub && s == lastub + 1) | |
9014280d | 7641 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7642 | "Misplaced _ in number"); |
7643 | lastub = s; | |
7644 | } | |
7645 | else | |
fc36a67e | 7646 | *d++ = *s; |
378cc40b | 7647 | } |
928753ea JH |
7648 | /* fractional part ending in underbar? */ |
7649 | if (s[-1] == '_') { | |
7650 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7651 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
7652 | "Misplaced _ in number"); |
7653 | } | |
dd629d5b GS |
7654 | if (*s == '.' && isDIGIT(s[1])) { |
7655 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 7656 | s = start; |
dd629d5b GS |
7657 | goto vstring; |
7658 | } | |
378cc40b | 7659 | } |
02aa26ce NT |
7660 | |
7661 | /* read exponent part, if present */ | |
7fd134d9 | 7662 | if (*s && strchr("eE",*s) && strchr("+-0123456789_", s[1])) { |
79072805 LW |
7663 | floatit = TRUE; |
7664 | s++; | |
02aa26ce NT |
7665 | |
7666 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 7667 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 7668 | |
7fd134d9 JH |
7669 | /* stray preinitial _ */ |
7670 | if (*s == '_') { | |
7671 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7672 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7673 | "Misplaced _ in number"); |
7674 | lastub = s++; | |
7675 | } | |
7676 | ||
02aa26ce | 7677 | /* allow positive or negative exponent */ |
378cc40b LW |
7678 | if (*s == '+' || *s == '-') |
7679 | *d++ = *s++; | |
02aa26ce | 7680 | |
7fd134d9 JH |
7681 | /* stray initial _ */ |
7682 | if (*s == '_') { | |
7683 | if (ckWARN(WARN_SYNTAX)) | |
9014280d | 7684 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 JH |
7685 | "Misplaced _ in number"); |
7686 | lastub = s++; | |
7687 | } | |
7688 | ||
7fd134d9 JH |
7689 | /* read digits of exponent */ |
7690 | while (isDIGIT(*s) || *s == '_') { | |
7691 | if (isDIGIT(*s)) { | |
7692 | if (d >= e) | |
7693 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 7694 | *d++ = *s++; |
7fd134d9 JH |
7695 | } |
7696 | else { | |
7697 | if (ckWARN(WARN_SYNTAX) && | |
7698 | ((lastub && s == lastub + 1) || | |
b3b48e3e | 7699 | (!isDIGIT(s[1]) && s[1] != '_'))) |
9014280d | 7700 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
7fd134d9 | 7701 | "Misplaced _ in number"); |
b3b48e3e | 7702 | lastub = s++; |
7fd134d9 | 7703 | } |
7fd134d9 | 7704 | } |
378cc40b | 7705 | } |
02aa26ce | 7706 | |
02aa26ce NT |
7707 | |
7708 | /* make an sv from the string */ | |
79072805 | 7709 | sv = NEWSV(92,0); |
097ee67d | 7710 | |
0b7fceb9 | 7711 | /* |
58bb9ec3 NC |
7712 | We try to do an integer conversion first if no characters |
7713 | indicating "float" have been found. | |
0b7fceb9 MU |
7714 | */ |
7715 | ||
7716 | if (!floatit) { | |
58bb9ec3 NC |
7717 | UV uv; |
7718 | int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); | |
7719 | ||
7720 | if (flags == IS_NUMBER_IN_UV) { | |
7721 | if (uv <= IV_MAX) | |
86554af2 | 7722 | sv_setiv(sv, uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 7723 | else |
c239479b | 7724 | sv_setuv(sv, uv); |
58bb9ec3 NC |
7725 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
7726 | if (uv <= (UV) IV_MIN) | |
7727 | sv_setiv(sv, -(IV)uv); | |
7728 | else | |
7729 | floatit = TRUE; | |
7730 | } else | |
7731 | floatit = TRUE; | |
7732 | } | |
0b7fceb9 | 7733 | if (floatit) { |
58bb9ec3 NC |
7734 | /* terminate the string */ |
7735 | *d = '\0'; | |
86554af2 JH |
7736 | nv = Atof(PL_tokenbuf); |
7737 | sv_setnv(sv, nv); | |
7738 | } | |
86554af2 | 7739 | |
b8403495 JH |
7740 | if ( floatit ? (PL_hints & HINT_NEW_FLOAT) : |
7741 | (PL_hints & HINT_NEW_INTEGER) ) | |
4e553d73 | 7742 | sv = new_constant(PL_tokenbuf, d - PL_tokenbuf, |
b8403495 JH |
7743 | (floatit ? "float" : "integer"), |
7744 | sv, Nullsv, NULL); | |
378cc40b | 7745 | break; |
0b7fceb9 | 7746 | |
e312add1 | 7747 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 7748 | case 'v': |
dd629d5b | 7749 | vstring: |
f4758303 | 7750 | sv = NEWSV(92,5); /* preallocate storage space */ |
b0f01acb | 7751 | s = scan_vstring(s,sv); |
a7cb1f99 | 7752 | break; |
79072805 | 7753 | } |
a687059c | 7754 | |
02aa26ce NT |
7755 | /* make the op for the constant and return */ |
7756 | ||
a86a20aa | 7757 | if (sv) |
b73d6f50 | 7758 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 7759 | else |
b73d6f50 | 7760 | lvalp->opval = Nullop; |
a687059c | 7761 | |
378cc40b LW |
7762 | return s; |
7763 | } | |
7764 | ||
76e3520e | 7765 | STATIC char * |
cea2e8a9 | 7766 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 7767 | { |
79072805 | 7768 | register char *eol; |
378cc40b | 7769 | register char *t; |
79cb57f6 | 7770 | SV *stuff = newSVpvn("",0); |
79072805 | 7771 | bool needargs = FALSE; |
c5ee2135 | 7772 | bool eofmt = FALSE; |
378cc40b | 7773 | |
79072805 | 7774 | while (!needargs) { |
a1b95068 | 7775 | if (*s == '.') { |
79072805 | 7776 | /*SUPPRESS 530*/ |
51882d45 | 7777 | #ifdef PERL_STRICT_CR |
bf4acbe4 | 7778 | for (t = s+1;SPACE_OR_TAB(*t); t++) ; |
51882d45 | 7779 | #else |
bf4acbe4 | 7780 | for (t = s+1;SPACE_OR_TAB(*t) || *t == '\r'; t++) ; |
51882d45 | 7781 | #endif |
c5ee2135 WL |
7782 | if (*t == '\n' || t == PL_bufend) { |
7783 | eofmt = TRUE; | |
79072805 | 7784 | break; |
c5ee2135 | 7785 | } |
79072805 | 7786 | } |
3280af22 | 7787 | if (PL_in_eval && !PL_rsfp) { |
a1b95068 | 7788 | eol = memchr(s,'\n',PL_bufend-s); |
0f85fab0 | 7789 | if (!eol++) |
3280af22 | 7790 | eol = PL_bufend; |
0f85fab0 LW |
7791 | } |
7792 | else | |
3280af22 | 7793 | eol = PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
79072805 | 7794 | if (*s != '#') { |
a0d0e21e LW |
7795 | for (t = s; t < eol; t++) { |
7796 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
7797 | needargs = FALSE; | |
7798 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 7799 | } |
a0d0e21e LW |
7800 | if (*t == '@' || *t == '^') |
7801 | needargs = TRUE; | |
378cc40b | 7802 | } |
7121b347 MG |
7803 | if (eol > s) { |
7804 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 7805 | #ifndef PERL_STRICT_CR |
7121b347 MG |
7806 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
7807 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
7808 | end[-2] = '\n'; | |
7809 | end[-1] = '\0'; | |
7810 | SvCUR(stuff)--; | |
7811 | } | |
2dc4c65b | 7812 | #endif |
7121b347 MG |
7813 | } |
7814 | else | |
7815 | break; | |
79072805 LW |
7816 | } |
7817 | s = eol; | |
3280af22 NIS |
7818 | if (PL_rsfp) { |
7819 | s = filter_gets(PL_linestr, PL_rsfp, 0); | |
7820 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr); | |
7821 | PL_bufend = PL_bufptr + SvCUR(PL_linestr); | |
207e3d1a | 7822 | PL_last_lop = PL_last_uni = Nullch; |
79072805 | 7823 | if (!s) { |
3280af22 | 7824 | s = PL_bufptr; |
378cc40b LW |
7825 | break; |
7826 | } | |
378cc40b | 7827 | } |
463ee0b2 | 7828 | incline(s); |
79072805 | 7829 | } |
a0d0e21e LW |
7830 | enough: |
7831 | if (SvCUR(stuff)) { | |
3280af22 | 7832 | PL_expect = XTERM; |
79072805 | 7833 | if (needargs) { |
3280af22 NIS |
7834 | PL_lex_state = LEX_NORMAL; |
7835 | PL_nextval[PL_nexttoke].ival = 0; | |
79072805 LW |
7836 | force_next(','); |
7837 | } | |
a0d0e21e | 7838 | else |
3280af22 | 7839 | PL_lex_state = LEX_FORMLINE; |
1bd51a4c IH |
7840 | if (!IN_BYTES) { |
7841 | if (UTF && is_utf8_string((U8*)SvPVX(stuff), SvCUR(stuff))) | |
7842 | SvUTF8_on(stuff); | |
7843 | else if (PL_encoding) | |
7844 | sv_recode_to_utf8(stuff, PL_encoding); | |
7845 | } | |
3280af22 | 7846 | PL_nextval[PL_nexttoke].opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 7847 | force_next(THING); |
3280af22 | 7848 | PL_nextval[PL_nexttoke].ival = OP_FORMLINE; |
79072805 | 7849 | force_next(LSTOP); |
378cc40b | 7850 | } |
79072805 | 7851 | else { |
8990e307 | 7852 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
7853 | if (eofmt) |
7854 | PL_lex_formbrack = 0; | |
3280af22 | 7855 | PL_bufptr = s; |
79072805 LW |
7856 | } |
7857 | return s; | |
378cc40b | 7858 | } |
a687059c | 7859 | |
76e3520e | 7860 | STATIC void |
cea2e8a9 | 7861 | S_set_csh(pTHX) |
a687059c | 7862 | { |
ae986130 | 7863 | #ifdef CSH |
3280af22 NIS |
7864 | if (!PL_cshlen) |
7865 | PL_cshlen = strlen(PL_cshname); | |
ae986130 | 7866 | #endif |
a687059c | 7867 | } |
463ee0b2 | 7868 | |
ba6d6ac9 | 7869 | I32 |
864dbfa3 | 7870 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 7871 | { |
3280af22 NIS |
7872 | I32 oldsavestack_ix = PL_savestack_ix; |
7873 | CV* outsidecv = PL_compcv; | |
8990e307 | 7874 | |
3280af22 NIS |
7875 | if (PL_compcv) { |
7876 | assert(SvTYPE(PL_compcv) == SVt_PVCV); | |
e9a444f0 | 7877 | } |
7766f137 | 7878 | SAVEI32(PL_subline); |
3280af22 | 7879 | save_item(PL_subname); |
3280af22 | 7880 | SAVESPTR(PL_compcv); |
3280af22 NIS |
7881 | |
7882 | PL_compcv = (CV*)NEWSV(1104,0); | |
7883 | sv_upgrade((SV *)PL_compcv, is_format ? SVt_PVFM : SVt_PVCV); | |
7884 | CvFLAGS(PL_compcv) |= flags; | |
7885 | ||
57843af0 | 7886 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 7887 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
3280af22 | 7888 | CvOUTSIDE(PL_compcv) = (CV*)SvREFCNT_inc(outsidecv); |
a3985cdc | 7889 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
748a9306 | 7890 | |
8990e307 LW |
7891 | return oldsavestack_ix; |
7892 | } | |
7893 | ||
084592ab CN |
7894 | #ifdef __SC__ |
7895 | #pragma segment Perl_yylex | |
7896 | #endif | |
8990e307 | 7897 | int |
864dbfa3 | 7898 | Perl_yywarn(pTHX_ char *s) |
8990e307 | 7899 | { |
faef0170 | 7900 | PL_in_eval |= EVAL_WARNONLY; |
748a9306 | 7901 | yyerror(s); |
faef0170 | 7902 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 7903 | return 0; |
8990e307 LW |
7904 | } |
7905 | ||
7906 | int | |
864dbfa3 | 7907 | Perl_yyerror(pTHX_ char *s) |
463ee0b2 | 7908 | { |
68dc0745 | 7909 | char *where = NULL; |
7910 | char *context = NULL; | |
7911 | int contlen = -1; | |
46fc3d4c | 7912 | SV *msg; |
463ee0b2 | 7913 | |
3280af22 | 7914 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
54310121 | 7915 | where = "at EOF"; |
3280af22 NIS |
7916 | else if (PL_bufptr > PL_oldoldbufptr && PL_bufptr - PL_oldoldbufptr < 200 && |
7917 | PL_oldoldbufptr != PL_oldbufptr && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7918 | /* |
7919 | Only for NetWare: | |
7920 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7921 | when the script has error such as not having the closing quotes like: | |
7922 | if ($var eq "value) | |
7923 | Checking of white spaces is anyway done in NetWare code. | |
7924 | */ | |
7925 | #ifndef NETWARE | |
3280af22 NIS |
7926 | while (isSPACE(*PL_oldoldbufptr)) |
7927 | PL_oldoldbufptr++; | |
f355267c | 7928 | #endif |
3280af22 NIS |
7929 | context = PL_oldoldbufptr; |
7930 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 7931 | } |
3280af22 NIS |
7932 | else if (PL_bufptr > PL_oldbufptr && PL_bufptr - PL_oldbufptr < 200 && |
7933 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
7934 | /* |
7935 | Only for NetWare: | |
7936 | The code below is removed for NetWare because it abends/crashes on NetWare | |
7937 | when the script has error such as not having the closing quotes like: | |
7938 | if ($var eq "value) | |
7939 | Checking of white spaces is anyway done in NetWare code. | |
7940 | */ | |
7941 | #ifndef NETWARE | |
3280af22 NIS |
7942 | while (isSPACE(*PL_oldbufptr)) |
7943 | PL_oldbufptr++; | |
f355267c | 7944 | #endif |
3280af22 NIS |
7945 | context = PL_oldbufptr; |
7946 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
7947 | } |
7948 | else if (yychar > 255) | |
68dc0745 | 7949 | where = "next token ???"; |
12fbd33b | 7950 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
7951 | if (PL_lex_state == LEX_NORMAL || |
7952 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
68dc0745 | 7953 | where = "at end of line"; |
3280af22 | 7954 | else if (PL_lex_inpat) |
68dc0745 | 7955 | where = "within pattern"; |
463ee0b2 | 7956 | else |
68dc0745 | 7957 | where = "within string"; |
463ee0b2 | 7958 | } |
46fc3d4c | 7959 | else { |
79cb57f6 | 7960 | SV *where_sv = sv_2mortal(newSVpvn("next char ", 10)); |
46fc3d4c | 7961 | if (yychar < 32) |
cea2e8a9 | 7962 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
46fc3d4c | 7963 | else if (isPRINT_LC(yychar)) |
cea2e8a9 | 7964 | Perl_sv_catpvf(aTHX_ where_sv, "%c", yychar); |
463ee0b2 | 7965 | else |
cea2e8a9 | 7966 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
46fc3d4c | 7967 | where = SvPVX(where_sv); |
463ee0b2 | 7968 | } |
46fc3d4c | 7969 | msg = sv_2mortal(newSVpv(s, 0)); |
ed094faf | 7970 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 7971 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 7972 | if (context) |
cea2e8a9 | 7973 | Perl_sv_catpvf(aTHX_ msg, "near \"%.*s\"\n", contlen, context); |
463ee0b2 | 7974 | else |
cea2e8a9 | 7975 | Perl_sv_catpvf(aTHX_ msg, "%s\n", where); |
57843af0 | 7976 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 7977 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 7978 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 7979 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 7980 | PL_multi_end = 0; |
a0d0e21e | 7981 | } |
56da5a46 RGS |
7982 | if (PL_in_eval & EVAL_WARNONLY && ckWARN_d(WARN_SYNTAX)) |
7983 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, msg); | |
463ee0b2 | 7984 | else |
5a844595 | 7985 | qerror(msg); |
c7d6bfb2 GS |
7986 | if (PL_error_count >= 10) { |
7987 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 7988 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
248c2a4d | 7989 | ERRSV, OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
7990 | else |
7991 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 7992 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 7993 | } |
3280af22 NIS |
7994 | PL_in_my = 0; |
7995 | PL_in_my_stash = Nullhv; | |
463ee0b2 LW |
7996 | return 0; |
7997 | } | |
084592ab CN |
7998 | #ifdef __SC__ |
7999 | #pragma segment Main | |
8000 | #endif | |
4e35701f | 8001 | |
b250498f | 8002 | STATIC char* |
3ae08724 | 8003 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 8004 | { |
b250498f GS |
8005 | STRLEN slen; |
8006 | slen = SvCUR(PL_linestr); | |
7aa207d6 | 8007 | switch (s[0]) { |
4e553d73 NIS |
8008 | case 0xFF: |
8009 | if (s[1] == 0xFE) { | |
7aa207d6 | 8010 | /* UTF-16 little-endian? (or UTF32-LE?) */ |
3ae08724 | 8011 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
7aa207d6 | 8012 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-LE"); |
01ec43d0 | 8013 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8014 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF16-LE script encoding (BOM)\n"); |
3ae08724 | 8015 | s += 2; |
7aa207d6 | 8016 | utf16le: |
dea0fc0b JH |
8017 | if (PL_bufend > (char*)s) { |
8018 | U8 *news; | |
8019 | I32 newlen; | |
8020 | ||
8021 | filter_add(utf16rev_textfilter, NULL); | |
8022 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8023 | utf16_to_utf8_reversed(s, news, |
8024 | PL_bufend - (char*)s - 1, | |
8025 | &newlen); | |
7aa207d6 | 8026 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8027 | Safefree(news); |
7aa207d6 JH |
8028 | SvUTF8_on(PL_linestr); |
8029 | s = (U8*)SvPVX(PL_linestr); | |
8030 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8031 | } |
b250498f | 8032 | #else |
7aa207d6 | 8033 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-LE"); |
b250498f | 8034 | #endif |
01ec43d0 GS |
8035 | } |
8036 | break; | |
78ae23f5 | 8037 | case 0xFE: |
7aa207d6 | 8038 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 8039 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 8040 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b | 8041 | s += 2; |
7aa207d6 | 8042 | utf16be: |
dea0fc0b JH |
8043 | if (PL_bufend > (char *)s) { |
8044 | U8 *news; | |
8045 | I32 newlen; | |
8046 | ||
8047 | filter_add(utf16_textfilter, NULL); | |
8048 | New(898, news, (PL_bufend - (char*)s) * 3 / 2 + 1, U8); | |
1de9afcd RGS |
8049 | utf16_to_utf8(s, news, |
8050 | PL_bufend - (char*)s, | |
8051 | &newlen); | |
7aa207d6 | 8052 | sv_setpvn(PL_linestr, (const char*)news, newlen); |
dea0fc0b | 8053 | Safefree(news); |
7aa207d6 JH |
8054 | SvUTF8_on(PL_linestr); |
8055 | s = (U8*)SvPVX(PL_linestr); | |
8056 | PL_bufend = SvPVX(PL_linestr) + newlen; | |
dea0fc0b | 8057 | } |
b250498f | 8058 | #else |
7aa207d6 | 8059 | Perl_croak(aTHX_ "Unsupported script encoding UTF16-BE"); |
b250498f | 8060 | #endif |
01ec43d0 GS |
8061 | } |
8062 | break; | |
3ae08724 GS |
8063 | case 0xEF: |
8064 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 8065 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
8066 | s += 3; /* UTF-8 */ |
8067 | } | |
8068 | break; | |
8069 | case 0: | |
7aa207d6 JH |
8070 | if (slen > 3) { |
8071 | if (s[1] == 0) { | |
8072 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
8073 | /* UTF-32 big-endian */ | |
8074 | Perl_croak(aTHX_ "Unsupported script encoding UTF32-BE"); | |
8075 | } | |
8076 | } | |
8077 | else if (s[2] == 0 && s[3] != 0) { | |
8078 | /* Leading bytes | |
8079 | * 00 xx 00 xx | |
8080 | * are a good indicator of UTF-16BE. */ | |
8081 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); | |
8082 | goto utf16be; | |
8083 | } | |
01ec43d0 | 8084 | } |
7aa207d6 JH |
8085 | default: |
8086 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
8087 | /* Leading bytes | |
8088 | * xx 00 xx 00 | |
8089 | * are a good indicator of UTF-16LE. */ | |
8090 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); | |
8091 | goto utf16le; | |
8092 | } | |
01ec43d0 | 8093 | } |
b8f84bb2 | 8094 | return (char*)s; |
b250498f | 8095 | } |
4755096e | 8096 | |
4755096e GS |
8097 | /* |
8098 | * restore_rsfp | |
8099 | * Restore a source filter. | |
8100 | */ | |
8101 | ||
8102 | static void | |
acfe0abc | 8103 | restore_rsfp(pTHX_ void *f) |
4755096e GS |
8104 | { |
8105 | PerlIO *fp = (PerlIO*)f; | |
8106 | ||
8107 | if (PL_rsfp == PerlIO_stdin()) | |
8108 | PerlIO_clearerr(PL_rsfp); | |
8109 | else if (PL_rsfp && (PL_rsfp != fp)) | |
8110 | PerlIO_close(PL_rsfp); | |
8111 | PL_rsfp = fp; | |
8112 | } | |
6e3aabd6 GS |
8113 | |
8114 | #ifndef PERL_NO_UTF16_FILTER | |
8115 | static I32 | |
acfe0abc | 8116 | utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8117 | { |
1de9afcd | 8118 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8119 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8120 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8121 | "utf16_textfilter(%p): %d %d (%d)\n", | |
8122 | utf16_textfilter, idx, maxlen, count)); | |
6e3aabd6 GS |
8123 | if (count) { |
8124 | U8* tmps; | |
dea0fc0b | 8125 | I32 newlen; |
6e3aabd6 | 8126 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8127 | Copy(SvPVX(sv), tmps, old, char); |
8128 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8129 | SvCUR(sv) - old, &newlen); | |
8130 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8131 | } |
1de9afcd RGS |
8132 | DEBUG_P({sv_dump(sv);}); |
8133 | return SvCUR(sv); | |
6e3aabd6 GS |
8134 | } |
8135 | ||
8136 | static I32 | |
acfe0abc | 8137 | utf16rev_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 8138 | { |
1de9afcd | 8139 | STRLEN old = SvCUR(sv); |
6e3aabd6 | 8140 | I32 count = FILTER_READ(idx+1, sv, maxlen); |
1de9afcd RGS |
8141 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
8142 | "utf16rev_textfilter(%p): %d %d (%d)\n", | |
8143 | utf16rev_textfilter, idx, maxlen, count)); | |
6e3aabd6 GS |
8144 | if (count) { |
8145 | U8* tmps; | |
dea0fc0b | 8146 | I32 newlen; |
6e3aabd6 | 8147 | New(898, tmps, SvCUR(sv) * 3 / 2 + 1, U8); |
1de9afcd RGS |
8148 | Copy(SvPVX(sv), tmps, old, char); |
8149 | utf16_to_utf8((U8*)SvPVX(sv) + old, tmps + old, | |
8150 | SvCUR(sv) - old, &newlen); | |
8151 | sv_usepvn(sv, (char*)tmps, (STRLEN)newlen + old); | |
6e3aabd6 | 8152 | } |
1de9afcd | 8153 | DEBUG_P({ sv_dump(sv); }); |
6e3aabd6 GS |
8154 | return count; |
8155 | } | |
8156 | #endif | |
9f4817db | 8157 | |
f333445c JP |
8158 | /* |
8159 | Returns a pointer to the next character after the parsed | |
8160 | vstring, as well as updating the passed in sv. | |
8161 | ||
8162 | Function must be called like | |
8163 | ||
8164 | sv = NEWSV(92,5); | |
8165 | s = scan_vstring(s,sv); | |
8166 | ||
8167 | The sv should already be large enough to store the vstring | |
8168 | passed in, for performance reasons. | |
8169 | ||
8170 | */ | |
8171 | ||
8172 | char * | |
8173 | Perl_scan_vstring(pTHX_ char *s, SV *sv) | |
8174 | { | |
8175 | char *pos = s; | |
8176 | char *start = s; | |
8177 | if (*pos == 'v') pos++; /* get past 'v' */ | |
3e884cbf JH |
8178 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
8179 | pos++; | |
f333445c JP |
8180 | if ( *pos != '.') { |
8181 | /* this may not be a v-string if followed by => */ | |
8fc7bb1c SM |
8182 | char *next = pos; |
8183 | while (next < PL_bufend && isSPACE(*next)) | |
8184 | ++next; | |
8185 | if ((PL_bufend - next) >= 2 && *next == '=' && next[1] == '>' ) { | |
f333445c JP |
8186 | /* return string not v-string */ |
8187 | sv_setpvn(sv,(char *)s,pos-s); | |
8188 | return pos; | |
8189 | } | |
8190 | } | |
8191 | ||
8192 | if (!isALPHA(*pos)) { | |
8193 | UV rev; | |
8194 | U8 tmpbuf[UTF8_MAXLEN+1]; | |
8195 | U8 *tmpend; | |
8196 | ||
8197 | if (*s == 'v') s++; /* get past 'v' */ | |
8198 | ||
8199 | sv_setpvn(sv, "", 0); | |
8200 | ||
8201 | for (;;) { | |
8202 | rev = 0; | |
8203 | { | |
8204 | /* this is atoi() that tolerates underscores */ | |
8205 | char *end = pos; | |
8206 | UV mult = 1; | |
8207 | while (--end >= s) { | |
8208 | UV orev; | |
8209 | if (*end == '_') | |
8210 | continue; | |
8211 | orev = rev; | |
8212 | rev += (*end - '0') * mult; | |
8213 | mult *= 10; | |
8214 | if (orev > rev && ckWARN_d(WARN_OVERFLOW)) | |
8215 | Perl_warner(aTHX_ packWARN(WARN_OVERFLOW), | |
8216 | "Integer overflow in decimal number"); | |
8217 | } | |
8218 | } | |
8219 | #ifdef EBCDIC | |
8220 | if (rev > 0x7FFFFFFF) | |
8221 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
8222 | #endif | |
8223 | /* Append native character for the rev point */ | |
8224 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
8225 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
8226 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
8227 | SvUTF8_on(sv); | |
3e884cbf | 8228 | if (pos + 1 < PL_bufend && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
8229 | s = ++pos; |
8230 | else { | |
8231 | s = pos; | |
8232 | break; | |
8233 | } | |
3e884cbf | 8234 | while (pos < PL_bufend && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
8235 | pos++; |
8236 | } | |
8237 | SvPOK_on(sv); | |
8238 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
8239 | SvRMAGICAL_on(sv); | |
8240 | } | |
8241 | return s; | |
8242 | } | |
8243 |