Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* toke.c |
a687059c | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 | /* | |
4ac71550 TC |
12 | * 'It all comes from here, the stench and the peril.' --Frodo |
13 | * | |
14 | * [p.719 of _The Lord of the Rings_, IV/ix: "Shelob's Lair"] | |
378cc40b LW |
15 | */ |
16 | ||
9cbb5ea2 GS |
17 | /* |
18 | * This file is the lexer for Perl. It's closely linked to the | |
4e553d73 | 19 | * parser, perly.y. |
ffb4593c NT |
20 | * |
21 | * The main routine is yylex(), which returns the next token. | |
22 | */ | |
23 | ||
f0e67a1d Z |
24 | /* |
25 | =head1 Lexer interface | |
26 | ||
27 | This is the lower layer of the Perl parser, managing characters and tokens. | |
28 | ||
29 | =for apidoc AmU|yy_parser *|PL_parser | |
30 | ||
31 | Pointer to a structure encapsulating the state of the parsing operation | |
32 | currently in progress. The pointer can be locally changed to perform | |
33 | a nested parse without interfering with the state of an outer parse. | |
34 | Individual members of C<PL_parser> have their own documentation. | |
35 | ||
36 | =cut | |
37 | */ | |
38 | ||
378cc40b | 39 | #include "EXTERN.h" |
864dbfa3 | 40 | #define PERL_IN_TOKE_C |
378cc40b | 41 | #include "perl.h" |
04e98a4d | 42 | #include "dquote_static.c" |
378cc40b | 43 | |
eb0d8d16 NC |
44 | #define new_constant(a,b,c,d,e,f,g) \ |
45 | S_new_constant(aTHX_ a,b,STR_WITH_LEN(c),d,e,f, g) | |
46 | ||
6154021b | 47 | #define pl_yylval (PL_parser->yylval) |
d3b6f988 | 48 | |
199e78b7 DM |
49 | /* XXX temporary backwards compatibility */ |
50 | #define PL_lex_brackets (PL_parser->lex_brackets) | |
78cdf107 Z |
51 | #define PL_lex_allbrackets (PL_parser->lex_allbrackets) |
52 | #define PL_lex_fakeeof (PL_parser->lex_fakeeof) | |
199e78b7 DM |
53 | #define PL_lex_brackstack (PL_parser->lex_brackstack) |
54 | #define PL_lex_casemods (PL_parser->lex_casemods) | |
55 | #define PL_lex_casestack (PL_parser->lex_casestack) | |
56 | #define PL_lex_defer (PL_parser->lex_defer) | |
57 | #define PL_lex_dojoin (PL_parser->lex_dojoin) | |
58 | #define PL_lex_expect (PL_parser->lex_expect) | |
59 | #define PL_lex_formbrack (PL_parser->lex_formbrack) | |
60 | #define PL_lex_inpat (PL_parser->lex_inpat) | |
61 | #define PL_lex_inwhat (PL_parser->lex_inwhat) | |
62 | #define PL_lex_op (PL_parser->lex_op) | |
63 | #define PL_lex_repl (PL_parser->lex_repl) | |
64 | #define PL_lex_starts (PL_parser->lex_starts) | |
65 | #define PL_lex_stuff (PL_parser->lex_stuff) | |
66 | #define PL_multi_start (PL_parser->multi_start) | |
67 | #define PL_multi_open (PL_parser->multi_open) | |
68 | #define PL_multi_close (PL_parser->multi_close) | |
199e78b7 DM |
69 | #define PL_preambled (PL_parser->preambled) |
70 | #define PL_sublex_info (PL_parser->sublex_info) | |
bdc0bf6f | 71 | #define PL_linestr (PL_parser->linestr) |
c2598295 DM |
72 | #define PL_expect (PL_parser->expect) |
73 | #define PL_copline (PL_parser->copline) | |
f06b5848 DM |
74 | #define PL_bufptr (PL_parser->bufptr) |
75 | #define PL_oldbufptr (PL_parser->oldbufptr) | |
76 | #define PL_oldoldbufptr (PL_parser->oldoldbufptr) | |
77 | #define PL_linestart (PL_parser->linestart) | |
78 | #define PL_bufend (PL_parser->bufend) | |
79 | #define PL_last_uni (PL_parser->last_uni) | |
80 | #define PL_last_lop (PL_parser->last_lop) | |
81 | #define PL_last_lop_op (PL_parser->last_lop_op) | |
bc177e6b | 82 | #define PL_lex_state (PL_parser->lex_state) |
2f9285f8 | 83 | #define PL_rsfp (PL_parser->rsfp) |
5486870f | 84 | #define PL_rsfp_filters (PL_parser->rsfp_filters) |
12bd6ede DM |
85 | #define PL_in_my (PL_parser->in_my) |
86 | #define PL_in_my_stash (PL_parser->in_my_stash) | |
14047fc9 | 87 | #define PL_tokenbuf (PL_parser->tokenbuf) |
670a9cb2 | 88 | #define PL_multi_end (PL_parser->multi_end) |
13765c85 | 89 | #define PL_error_count (PL_parser->error_count) |
199e78b7 DM |
90 | |
91 | #ifdef PERL_MAD | |
92 | # define PL_endwhite (PL_parser->endwhite) | |
93 | # define PL_faketokens (PL_parser->faketokens) | |
94 | # define PL_lasttoke (PL_parser->lasttoke) | |
95 | # define PL_nextwhite (PL_parser->nextwhite) | |
96 | # define PL_realtokenstart (PL_parser->realtokenstart) | |
97 | # define PL_skipwhite (PL_parser->skipwhite) | |
98 | # define PL_thisclose (PL_parser->thisclose) | |
99 | # define PL_thismad (PL_parser->thismad) | |
100 | # define PL_thisopen (PL_parser->thisopen) | |
101 | # define PL_thisstuff (PL_parser->thisstuff) | |
102 | # define PL_thistoken (PL_parser->thistoken) | |
103 | # define PL_thiswhite (PL_parser->thiswhite) | |
fb205e7a DM |
104 | # define PL_thiswhite (PL_parser->thiswhite) |
105 | # define PL_nexttoke (PL_parser->nexttoke) | |
106 | # define PL_curforce (PL_parser->curforce) | |
107 | #else | |
108 | # define PL_nexttoke (PL_parser->nexttoke) | |
109 | # define PL_nexttype (PL_parser->nexttype) | |
110 | # define PL_nextval (PL_parser->nextval) | |
199e78b7 DM |
111 | #endif |
112 | ||
a1894d81 | 113 | static const char* const ident_too_long = "Identifier too long"; |
8903cb82 | 114 | |
29595ff2 | 115 | #ifdef PERL_MAD |
29595ff2 | 116 | # define CURMAD(slot,sv) if (PL_madskills) { curmad(slot,sv); sv = 0; } |
cd81e915 | 117 | # define NEXTVAL_NEXTTOKE PL_nexttoke[PL_curforce].next_val |
9ded7720 | 118 | #else |
5db06880 | 119 | # define CURMAD(slot,sv) |
9ded7720 | 120 | # define NEXTVAL_NEXTTOKE PL_nextval[PL_nexttoke] |
29595ff2 NC |
121 | #endif |
122 | ||
a7aaec61 Z |
123 | #define XENUMMASK 0x3f |
124 | #define XFAKEEOF 0x40 | |
125 | #define XFAKEBRACK 0x80 | |
9059aa12 | 126 | |
39e02b42 JH |
127 | #ifdef USE_UTF8_SCRIPTS |
128 | # define UTF (!IN_BYTES) | |
2b9d42f0 | 129 | #else |
802a15e9 | 130 | # define UTF ((PL_linestr && DO_UTF8(PL_linestr)) || ( !(PL_parser->lex_flags & LEX_IGNORE_UTF8_HINTS) && (PL_hints & HINT_UTF8))) |
2b9d42f0 | 131 | #endif |
a0ed51b3 | 132 | |
b1fc3636 CJ |
133 | /* The maximum number of characters preceding the unrecognized one to display */ |
134 | #define UNRECOGNIZED_PRECEDE_COUNT 10 | |
135 | ||
61f0cdd9 | 136 | /* In variables named $^X, these are the legal values for X. |
2b92dfce GS |
137 | * 1999-02-27 mjd-perl-patch@plover.com */ |
138 | #define isCONTROLVAR(x) (isUPPER(x) || strchr("[\\]^_?", (x))) | |
139 | ||
bf4acbe4 | 140 | #define SPACE_OR_TAB(c) ((c)==' '||(c)=='\t') |
bf4acbe4 | 141 | |
ffb4593c NT |
142 | /* LEX_* are values for PL_lex_state, the state of the lexer. |
143 | * They are arranged oddly so that the guard on the switch statement | |
79072805 | 144 | * can get by with a single comparison (if the compiler is smart enough). |
9da1dd8f DM |
145 | * |
146 | * These values refer to the various states within a sublex parse, | |
147 | * i.e. within a double quotish string | |
79072805 LW |
148 | */ |
149 | ||
fb73857a | 150 | /* #define LEX_NOTPARSING 11 is done in perl.h. */ |
151 | ||
b6007c36 DM |
152 | #define LEX_NORMAL 10 /* normal code (ie not within "...") */ |
153 | #define LEX_INTERPNORMAL 9 /* code within a string, eg "$foo[$x+1]" */ | |
154 | #define LEX_INTERPCASEMOD 8 /* expecting a \U, \Q or \E etc */ | |
155 | #define LEX_INTERPPUSH 7 /* starting a new sublex parse level */ | |
156 | #define LEX_INTERPSTART 6 /* expecting the start of a $var */ | |
157 | ||
158 | /* at end of code, eg "$x" followed by: */ | |
159 | #define LEX_INTERPEND 5 /* ... eg not one of [, { or -> */ | |
160 | #define LEX_INTERPENDMAYBE 4 /* ... eg one of [, { or -> */ | |
161 | ||
162 | #define LEX_INTERPCONCAT 3 /* expecting anything, eg at start of | |
163 | string or after \E, $foo, etc */ | |
164 | #define LEX_INTERPCONST 2 /* NOT USED */ | |
165 | #define LEX_FORMLINE 1 /* expecting a format line */ | |
166 | #define LEX_KNOWNEXT 0 /* next token known; just return it */ | |
167 | ||
79072805 | 168 | |
bbf60fe6 | 169 | #ifdef DEBUGGING |
27da23d5 | 170 | static const char* const lex_state_names[] = { |
bbf60fe6 DM |
171 | "KNOWNEXT", |
172 | "FORMLINE", | |
173 | "INTERPCONST", | |
174 | "INTERPCONCAT", | |
175 | "INTERPENDMAYBE", | |
176 | "INTERPEND", | |
177 | "INTERPSTART", | |
178 | "INTERPPUSH", | |
179 | "INTERPCASEMOD", | |
180 | "INTERPNORMAL", | |
181 | "NORMAL" | |
182 | }; | |
183 | #endif | |
184 | ||
79072805 LW |
185 | #ifdef ff_next |
186 | #undef ff_next | |
d48672a2 LW |
187 | #endif |
188 | ||
79072805 | 189 | #include "keywords.h" |
fe14fcc3 | 190 | |
ffb4593c NT |
191 | /* CLINE is a macro that ensures PL_copline has a sane value */ |
192 | ||
ae986130 LW |
193 | #ifdef CLINE |
194 | #undef CLINE | |
195 | #endif | |
57843af0 | 196 | #define CLINE (PL_copline = (CopLINE(PL_curcop) < PL_copline ? CopLINE(PL_curcop) : PL_copline)) |
3280af22 | 197 | |
5db06880 | 198 | #ifdef PERL_MAD |
29595ff2 NC |
199 | # define SKIPSPACE0(s) skipspace0(s) |
200 | # define SKIPSPACE1(s) skipspace1(s) | |
201 | # define SKIPSPACE2(s,tsv) skipspace2(s,&tsv) | |
202 | # define PEEKSPACE(s) skipspace2(s,0) | |
203 | #else | |
204 | # define SKIPSPACE0(s) skipspace(s) | |
205 | # define SKIPSPACE1(s) skipspace(s) | |
206 | # define SKIPSPACE2(s,tsv) skipspace(s) | |
207 | # define PEEKSPACE(s) skipspace(s) | |
208 | #endif | |
209 | ||
ffb4593c NT |
210 | /* |
211 | * Convenience functions to return different tokens and prime the | |
9cbb5ea2 | 212 | * lexer for the next token. They all take an argument. |
ffb4593c NT |
213 | * |
214 | * TOKEN : generic token (used for '(', DOLSHARP, etc) | |
215 | * OPERATOR : generic operator | |
216 | * AOPERATOR : assignment operator | |
217 | * PREBLOCK : beginning the block after an if, while, foreach, ... | |
218 | * PRETERMBLOCK : beginning a non-code-defining {} block (eg, hash ref) | |
219 | * PREREF : *EXPR where EXPR is not a simple identifier | |
220 | * TERM : expression term | |
221 | * LOOPX : loop exiting command (goto, last, dump, etc) | |
222 | * FTST : file test operator | |
223 | * FUN0 : zero-argument function | |
7eb971ee | 224 | * FUN0OP : zero-argument function, with its op created in this file |
2d2e263d | 225 | * FUN1 : not used, except for not, which isn't a UNIOP |
ffb4593c NT |
226 | * BOop : bitwise or or xor |
227 | * BAop : bitwise and | |
228 | * SHop : shift operator | |
229 | * PWop : power operator | |
9cbb5ea2 | 230 | * PMop : pattern-matching operator |
ffb4593c NT |
231 | * Aop : addition-level operator |
232 | * Mop : multiplication-level operator | |
233 | * Eop : equality-testing operator | |
e5edeb50 | 234 | * Rop : relational operator <= != gt |
ffb4593c NT |
235 | * |
236 | * Also see LOP and lop() below. | |
237 | */ | |
238 | ||
998054bd | 239 | #ifdef DEBUGGING /* Serve -DT. */ |
704d4215 | 240 | # define REPORT(retval) tokereport((I32)retval, &pl_yylval) |
998054bd | 241 | #else |
bbf60fe6 | 242 | # define REPORT(retval) (retval) |
998054bd SC |
243 | #endif |
244 | ||
bbf60fe6 DM |
245 | #define TOKEN(retval) return ( PL_bufptr = s, REPORT(retval)) |
246 | #define OPERATOR(retval) return (PL_expect = XTERM, PL_bufptr = s, REPORT(retval)) | |
247 | #define AOPERATOR(retval) return ao((PL_expect = XTERM, PL_bufptr = s, REPORT(retval))) | |
248 | #define PREBLOCK(retval) return (PL_expect = XBLOCK,PL_bufptr = s, REPORT(retval)) | |
249 | #define PRETERMBLOCK(retval) return (PL_expect = XTERMBLOCK,PL_bufptr = s, REPORT(retval)) | |
250 | #define PREREF(retval) return (PL_expect = XREF,PL_bufptr = s, REPORT(retval)) | |
251 | #define TERM(retval) return (CLINE, PL_expect = XOPERATOR, PL_bufptr = s, REPORT(retval)) | |
6154021b RGS |
252 | #define LOOPX(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)LOOPEX)) |
253 | #define FTST(f) return (pl_yylval.ival=f, PL_expect=XTERMORDORDOR, PL_bufptr=s, REPORT((int)UNIOP)) | |
254 | #define FUN0(f) return (pl_yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC0)) | |
7eb971ee | 255 | #define FUN0OP(f) return (pl_yylval.opval=f, CLINE, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC0OP)) |
6154021b RGS |
256 | #define FUN1(f) return (pl_yylval.ival=f, PL_expect=XOPERATOR, PL_bufptr=s, REPORT((int)FUNC1)) |
257 | #define BOop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITOROP))) | |
258 | #define BAop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)BITANDOP))) | |
259 | #define SHop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)SHIFTOP))) | |
260 | #define PWop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)POWOP))) | |
261 | #define PMop(f) return(pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MATCHOP)) | |
262 | #define Aop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)ADDOP))) | |
263 | #define Mop(f) return ao((pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)MULOP))) | |
264 | #define Eop(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)EQOP)) | |
265 | #define Rop(f) return (pl_yylval.ival=f, PL_expect=XTERM, PL_bufptr=s, REPORT((int)RELOP)) | |
2f3197b3 | 266 | |
a687059c LW |
267 | /* This bit of chicanery makes a unary function followed by |
268 | * a parenthesis into a function with one argument, highest precedence. | |
6f33ba73 RGS |
269 | * The UNIDOR macro is for unary functions that can be followed by the // |
270 | * operator (such as C<shift // 0>). | |
a687059c | 271 | */ |
d68ce4ac | 272 | #define UNI3(f,x,have_x) { \ |
6154021b | 273 | pl_yylval.ival = f; \ |
d68ce4ac | 274 | if (have_x) PL_expect = x; \ |
376fcdbf AL |
275 | PL_bufptr = s; \ |
276 | PL_last_uni = PL_oldbufptr; \ | |
277 | PL_last_lop_op = f; \ | |
278 | if (*s == '(') \ | |
279 | return REPORT( (int)FUNC1 ); \ | |
29595ff2 | 280 | s = PEEKSPACE(s); \ |
376fcdbf AL |
281 | return REPORT( *s=='(' ? (int)FUNC1 : (int)UNIOP ); \ |
282 | } | |
d68ce4ac FC |
283 | #define UNI(f) UNI3(f,XTERM,1) |
284 | #define UNIDOR(f) UNI3(f,XTERMORDORDOR,1) | |
b5fb7ce3 FC |
285 | #define UNIPROTO(f,optional) { \ |
286 | if (optional) PL_last_uni = PL_oldbufptr; \ | |
22393538 MH |
287 | OPERATOR(f); \ |
288 | } | |
a687059c | 289 | |
d68ce4ac | 290 | #define UNIBRACK(f) UNI3(f,0,0) |
79072805 | 291 | |
9f68db38 | 292 | /* grandfather return to old style */ |
78cdf107 Z |
293 | #define OLDLOP(f) \ |
294 | do { \ | |
295 | if (!PL_lex_allbrackets && PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) \ | |
296 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; \ | |
297 | pl_yylval.ival = (f); \ | |
298 | PL_expect = XTERM; \ | |
299 | PL_bufptr = s; \ | |
300 | return (int)LSTOP; \ | |
301 | } while(0) | |
79072805 | 302 | |
83944c01 FC |
303 | #define COPLINE_INC_WITH_HERELINES \ |
304 | STMT_START { \ | |
305 | CopLINE_inc(PL_curcop); \ | |
d794b522 FC |
306 | if (PL_parser->lex_shared->herelines) \ |
307 | CopLINE(PL_curcop) += PL_parser->lex_shared->herelines, \ | |
308 | PL_parser->lex_shared->herelines = 0; \ | |
83944c01 FC |
309 | } STMT_END |
310 | ||
311 | ||
8fa7f367 JH |
312 | #ifdef DEBUGGING |
313 | ||
6154021b | 314 | /* how to interpret the pl_yylval associated with the token */ |
bbf60fe6 DM |
315 | enum token_type { |
316 | TOKENTYPE_NONE, | |
317 | TOKENTYPE_IVAL, | |
6154021b | 318 | TOKENTYPE_OPNUM, /* pl_yylval.ival contains an opcode number */ |
bbf60fe6 | 319 | TOKENTYPE_PVAL, |
aeaef349 | 320 | TOKENTYPE_OPVAL |
bbf60fe6 DM |
321 | }; |
322 | ||
6d4a66ac NC |
323 | static struct debug_tokens { |
324 | const int token; | |
325 | enum token_type type; | |
326 | const char *name; | |
327 | } const debug_tokens[] = | |
9041c2e3 | 328 | { |
bbf60fe6 DM |
329 | { ADDOP, TOKENTYPE_OPNUM, "ADDOP" }, |
330 | { ANDAND, TOKENTYPE_NONE, "ANDAND" }, | |
331 | { ANDOP, TOKENTYPE_NONE, "ANDOP" }, | |
332 | { ANONSUB, TOKENTYPE_IVAL, "ANONSUB" }, | |
333 | { ARROW, TOKENTYPE_NONE, "ARROW" }, | |
334 | { ASSIGNOP, TOKENTYPE_OPNUM, "ASSIGNOP" }, | |
335 | { BITANDOP, TOKENTYPE_OPNUM, "BITANDOP" }, | |
336 | { BITOROP, TOKENTYPE_OPNUM, "BITOROP" }, | |
337 | { COLONATTR, TOKENTYPE_NONE, "COLONATTR" }, | |
338 | { CONTINUE, TOKENTYPE_NONE, "CONTINUE" }, | |
0d863452 | 339 | { DEFAULT, TOKENTYPE_NONE, "DEFAULT" }, |
bbf60fe6 DM |
340 | { DO, TOKENTYPE_NONE, "DO" }, |
341 | { DOLSHARP, TOKENTYPE_NONE, "DOLSHARP" }, | |
342 | { DORDOR, TOKENTYPE_NONE, "DORDOR" }, | |
343 | { DOROP, TOKENTYPE_OPNUM, "DOROP" }, | |
344 | { DOTDOT, TOKENTYPE_IVAL, "DOTDOT" }, | |
345 | { ELSE, TOKENTYPE_NONE, "ELSE" }, | |
346 | { ELSIF, TOKENTYPE_IVAL, "ELSIF" }, | |
347 | { EQOP, TOKENTYPE_OPNUM, "EQOP" }, | |
348 | { FOR, TOKENTYPE_IVAL, "FOR" }, | |
349 | { FORMAT, TOKENTYPE_NONE, "FORMAT" }, | |
705fe0e5 FC |
350 | { FORMLBRACK, TOKENTYPE_NONE, "FORMLBRACK" }, |
351 | { FORMRBRACK, TOKENTYPE_NONE, "FORMRBRACK" }, | |
bbf60fe6 DM |
352 | { FUNC, TOKENTYPE_OPNUM, "FUNC" }, |
353 | { FUNC0, TOKENTYPE_OPNUM, "FUNC0" }, | |
7eb971ee | 354 | { FUNC0OP, TOKENTYPE_OPVAL, "FUNC0OP" }, |
bbf60fe6 DM |
355 | { FUNC0SUB, TOKENTYPE_OPVAL, "FUNC0SUB" }, |
356 | { FUNC1, TOKENTYPE_OPNUM, "FUNC1" }, | |
357 | { FUNCMETH, TOKENTYPE_OPVAL, "FUNCMETH" }, | |
0d863452 | 358 | { GIVEN, TOKENTYPE_IVAL, "GIVEN" }, |
bbf60fe6 DM |
359 | { HASHBRACK, TOKENTYPE_NONE, "HASHBRACK" }, |
360 | { IF, TOKENTYPE_IVAL, "IF" }, | |
5504e6cf | 361 | { LABEL, TOKENTYPE_PVAL, "LABEL" }, |
bbf60fe6 DM |
362 | { LOCAL, TOKENTYPE_IVAL, "LOCAL" }, |
363 | { LOOPEX, TOKENTYPE_OPNUM, "LOOPEX" }, | |
364 | { LSTOP, TOKENTYPE_OPNUM, "LSTOP" }, | |
365 | { LSTOPSUB, TOKENTYPE_OPVAL, "LSTOPSUB" }, | |
366 | { MATCHOP, TOKENTYPE_OPNUM, "MATCHOP" }, | |
367 | { METHOD, TOKENTYPE_OPVAL, "METHOD" }, | |
368 | { MULOP, TOKENTYPE_OPNUM, "MULOP" }, | |
369 | { MY, TOKENTYPE_IVAL, "MY" }, | |
bbf60fe6 DM |
370 | { NOAMP, TOKENTYPE_NONE, "NOAMP" }, |
371 | { NOTOP, TOKENTYPE_NONE, "NOTOP" }, | |
372 | { OROP, TOKENTYPE_IVAL, "OROP" }, | |
373 | { OROR, TOKENTYPE_NONE, "OROR" }, | |
374 | { PACKAGE, TOKENTYPE_NONE, "PACKAGE" }, | |
f3f204dc | 375 | { PEG, TOKENTYPE_NONE, "PEG" }, |
88e1f1a2 JV |
376 | { PLUGEXPR, TOKENTYPE_OPVAL, "PLUGEXPR" }, |
377 | { PLUGSTMT, TOKENTYPE_OPVAL, "PLUGSTMT" }, | |
bbf60fe6 DM |
378 | { PMFUNC, TOKENTYPE_OPVAL, "PMFUNC" }, |
379 | { POSTDEC, TOKENTYPE_NONE, "POSTDEC" }, | |
380 | { POSTINC, TOKENTYPE_NONE, "POSTINC" }, | |
381 | { POWOP, TOKENTYPE_OPNUM, "POWOP" }, | |
382 | { PREDEC, TOKENTYPE_NONE, "PREDEC" }, | |
383 | { PREINC, TOKENTYPE_NONE, "PREINC" }, | |
384 | { PRIVATEREF, TOKENTYPE_OPVAL, "PRIVATEREF" }, | |
f3f204dc | 385 | { QWLIST, TOKENTYPE_OPVAL, "QWLIST" }, |
bbf60fe6 DM |
386 | { REFGEN, TOKENTYPE_NONE, "REFGEN" }, |
387 | { RELOP, TOKENTYPE_OPNUM, "RELOP" }, | |
f3f204dc | 388 | { REQUIRE, TOKENTYPE_NONE, "REQUIRE" }, |
bbf60fe6 DM |
389 | { SHIFTOP, TOKENTYPE_OPNUM, "SHIFTOP" }, |
390 | { SUB, TOKENTYPE_NONE, "SUB" }, | |
391 | { THING, TOKENTYPE_OPVAL, "THING" }, | |
392 | { UMINUS, TOKENTYPE_NONE, "UMINUS" }, | |
393 | { UNIOP, TOKENTYPE_OPNUM, "UNIOP" }, | |
394 | { UNIOPSUB, TOKENTYPE_OPVAL, "UNIOPSUB" }, | |
395 | { UNLESS, TOKENTYPE_IVAL, "UNLESS" }, | |
396 | { UNTIL, TOKENTYPE_IVAL, "UNTIL" }, | |
397 | { USE, TOKENTYPE_IVAL, "USE" }, | |
0d863452 | 398 | { WHEN, TOKENTYPE_IVAL, "WHEN" }, |
bbf60fe6 DM |
399 | { WHILE, TOKENTYPE_IVAL, "WHILE" }, |
400 | { WORD, TOKENTYPE_OPVAL, "WORD" }, | |
be25f609 | 401 | { YADAYADA, TOKENTYPE_IVAL, "YADAYADA" }, |
c35e046a | 402 | { 0, TOKENTYPE_NONE, NULL } |
bbf60fe6 DM |
403 | }; |
404 | ||
6154021b | 405 | /* dump the returned token in rv, plus any optional arg in pl_yylval */ |
998054bd | 406 | |
bbf60fe6 | 407 | STATIC int |
704d4215 | 408 | S_tokereport(pTHX_ I32 rv, const YYSTYPE* lvalp) |
bbf60fe6 | 409 | { |
97aff369 | 410 | dVAR; |
7918f24d NC |
411 | |
412 | PERL_ARGS_ASSERT_TOKEREPORT; | |
413 | ||
bbf60fe6 | 414 | if (DEBUG_T_TEST) { |
bd61b366 | 415 | const char *name = NULL; |
bbf60fe6 | 416 | enum token_type type = TOKENTYPE_NONE; |
f54cb97a | 417 | const struct debug_tokens *p; |
396482e1 | 418 | SV* const report = newSVpvs("<== "); |
bbf60fe6 | 419 | |
f54cb97a | 420 | for (p = debug_tokens; p->token; p++) { |
bbf60fe6 DM |
421 | if (p->token == (int)rv) { |
422 | name = p->name; | |
423 | type = p->type; | |
424 | break; | |
425 | } | |
426 | } | |
427 | if (name) | |
54667de8 | 428 | Perl_sv_catpv(aTHX_ report, name); |
74736ae6 | 429 | else if ((char)rv > ' ' && (char)rv <= '~') |
bbf60fe6 DM |
430 | Perl_sv_catpvf(aTHX_ report, "'%c'", (char)rv); |
431 | else if (!rv) | |
396482e1 | 432 | sv_catpvs(report, "EOF"); |
bbf60fe6 DM |
433 | else |
434 | Perl_sv_catpvf(aTHX_ report, "?? %"IVdf, (IV)rv); | |
435 | switch (type) { | |
436 | case TOKENTYPE_NONE: | |
bbf60fe6 DM |
437 | break; |
438 | case TOKENTYPE_IVAL: | |
704d4215 | 439 | Perl_sv_catpvf(aTHX_ report, "(ival=%"IVdf")", (IV)lvalp->ival); |
bbf60fe6 DM |
440 | break; |
441 | case TOKENTYPE_OPNUM: | |
442 | Perl_sv_catpvf(aTHX_ report, "(ival=op_%s)", | |
704d4215 | 443 | PL_op_name[lvalp->ival]); |
bbf60fe6 DM |
444 | break; |
445 | case TOKENTYPE_PVAL: | |
704d4215 | 446 | Perl_sv_catpvf(aTHX_ report, "(pval=\"%s\")", lvalp->pval); |
bbf60fe6 DM |
447 | break; |
448 | case TOKENTYPE_OPVAL: | |
704d4215 | 449 | if (lvalp->opval) { |
401441c0 | 450 | Perl_sv_catpvf(aTHX_ report, "(opval=op_%s)", |
704d4215 GG |
451 | PL_op_name[lvalp->opval->op_type]); |
452 | if (lvalp->opval->op_type == OP_CONST) { | |
b6007c36 | 453 | Perl_sv_catpvf(aTHX_ report, " %s", |
704d4215 | 454 | SvPEEK(cSVOPx_sv(lvalp->opval))); |
b6007c36 DM |
455 | } |
456 | ||
457 | } | |
401441c0 | 458 | else |
396482e1 | 459 | sv_catpvs(report, "(opval=null)"); |
bbf60fe6 DM |
460 | break; |
461 | } | |
b6007c36 | 462 | PerlIO_printf(Perl_debug_log, "### %s\n\n", SvPV_nolen_const(report)); |
bbf60fe6 DM |
463 | }; |
464 | return (int)rv; | |
998054bd SC |
465 | } |
466 | ||
b6007c36 DM |
467 | |
468 | /* print the buffer with suitable escapes */ | |
469 | ||
470 | STATIC void | |
15f169a1 | 471 | S_printbuf(pTHX_ const char *const fmt, const char *const s) |
b6007c36 | 472 | { |
396482e1 | 473 | SV* const tmp = newSVpvs(""); |
7918f24d NC |
474 | |
475 | PERL_ARGS_ASSERT_PRINTBUF; | |
476 | ||
b6007c36 DM |
477 | PerlIO_printf(Perl_debug_log, fmt, pv_display(tmp, s, strlen(s), 0, 60)); |
478 | SvREFCNT_dec(tmp); | |
479 | } | |
480 | ||
8fa7f367 JH |
481 | #endif |
482 | ||
8290c323 NC |
483 | static int |
484 | S_deprecate_commaless_var_list(pTHX) { | |
485 | PL_expect = XTERM; | |
486 | deprecate("comma-less variable list"); | |
487 | return REPORT(','); /* grandfather non-comma-format format */ | |
488 | } | |
489 | ||
ffb4593c NT |
490 | /* |
491 | * S_ao | |
492 | * | |
c963b151 BD |
493 | * This subroutine detects &&=, ||=, and //= and turns an ANDAND, OROR or DORDOR |
494 | * into an OP_ANDASSIGN, OP_ORASSIGN, or OP_DORASSIGN | |
ffb4593c NT |
495 | */ |
496 | ||
76e3520e | 497 | STATIC int |
cea2e8a9 | 498 | S_ao(pTHX_ int toketype) |
a0d0e21e | 499 | { |
97aff369 | 500 | dVAR; |
3280af22 NIS |
501 | if (*PL_bufptr == '=') { |
502 | PL_bufptr++; | |
a0d0e21e | 503 | if (toketype == ANDAND) |
6154021b | 504 | pl_yylval.ival = OP_ANDASSIGN; |
a0d0e21e | 505 | else if (toketype == OROR) |
6154021b | 506 | pl_yylval.ival = OP_ORASSIGN; |
c963b151 | 507 | else if (toketype == DORDOR) |
6154021b | 508 | pl_yylval.ival = OP_DORASSIGN; |
a0d0e21e LW |
509 | toketype = ASSIGNOP; |
510 | } | |
511 | return toketype; | |
512 | } | |
513 | ||
ffb4593c NT |
514 | /* |
515 | * S_no_op | |
516 | * When Perl expects an operator and finds something else, no_op | |
517 | * prints the warning. It always prints "<something> found where | |
518 | * operator expected. It prints "Missing semicolon on previous line?" | |
519 | * if the surprise occurs at the start of the line. "do you need to | |
520 | * predeclare ..." is printed out for code like "sub bar; foo bar $x" | |
521 | * where the compiler doesn't know if foo is a method call or a function. | |
522 | * It prints "Missing operator before end of line" if there's nothing | |
523 | * after the missing operator, or "... before <...>" if there is something | |
524 | * after the missing operator. | |
525 | */ | |
526 | ||
76e3520e | 527 | STATIC void |
15f169a1 | 528 | S_no_op(pTHX_ const char *const what, char *s) |
463ee0b2 | 529 | { |
97aff369 | 530 | dVAR; |
9d4ba2ae AL |
531 | char * const oldbp = PL_bufptr; |
532 | const bool is_first = (PL_oldbufptr == PL_linestart); | |
68dc0745 | 533 | |
7918f24d NC |
534 | PERL_ARGS_ASSERT_NO_OP; |
535 | ||
1189a94a GS |
536 | if (!s) |
537 | s = oldbp; | |
07c798fb | 538 | else |
1189a94a | 539 | PL_bufptr = s; |
734ab321 | 540 | yywarn(Perl_form(aTHX_ "%s found where operator expected", what), UTF ? SVf_UTF8 : 0); |
56da5a46 RGS |
541 | if (ckWARN_d(WARN_SYNTAX)) { |
542 | if (is_first) | |
543 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
544 | "\t(Missing semicolon on previous line?)\n"); | |
545 | else if (PL_oldoldbufptr && isIDFIRST_lazy_if(PL_oldoldbufptr,UTF)) { | |
f54cb97a | 546 | const char *t; |
8a2bca12 | 547 | for (t = PL_oldoldbufptr; (isWORDCHAR_lazy_if(t,UTF) || *t == ':'); |
734ab321 | 548 | t += UTF ? UTF8SKIP(t) : 1) |
c35e046a | 549 | NOOP; |
56da5a46 RGS |
550 | if (t < PL_bufptr && isSPACE(*t)) |
551 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
734ab321 BF |
552 | "\t(Do you need to predeclare %"SVf"?)\n", |
553 | SVfARG(newSVpvn_flags(PL_oldoldbufptr, (STRLEN)(t - PL_oldoldbufptr), | |
554 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
56da5a46 RGS |
555 | } |
556 | else { | |
557 | assert(s >= oldbp); | |
558 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
734ab321 BF |
559 | "\t(Missing operator before %"SVf"?)\n", |
560 | SVfARG(newSVpvn_flags(oldbp, (STRLEN)(s - oldbp), | |
561 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
56da5a46 | 562 | } |
07c798fb | 563 | } |
3280af22 | 564 | PL_bufptr = oldbp; |
8990e307 LW |
565 | } |
566 | ||
ffb4593c NT |
567 | /* |
568 | * S_missingterm | |
569 | * Complain about missing quote/regexp/heredoc terminator. | |
d4c19fe8 | 570 | * If it's called with NULL then it cauterizes the line buffer. |
ffb4593c NT |
571 | * If we're in a delimited string and the delimiter is a control |
572 | * character, it's reformatted into a two-char sequence like ^C. | |
573 | * This is fatal. | |
574 | */ | |
575 | ||
76e3520e | 576 | STATIC void |
cea2e8a9 | 577 | S_missingterm(pTHX_ char *s) |
8990e307 | 578 | { |
97aff369 | 579 | dVAR; |
8990e307 LW |
580 | char tmpbuf[3]; |
581 | char q; | |
582 | if (s) { | |
9d4ba2ae | 583 | char * const nl = strrchr(s,'\n'); |
d2719217 | 584 | if (nl) |
8990e307 LW |
585 | *nl = '\0'; |
586 | } | |
463559e7 | 587 | else if (isCNTRL(PL_multi_close)) { |
8990e307 | 588 | *tmpbuf = '^'; |
585ec06d | 589 | tmpbuf[1] = (char)toCTRL(PL_multi_close); |
8990e307 LW |
590 | tmpbuf[2] = '\0'; |
591 | s = tmpbuf; | |
592 | } | |
593 | else { | |
eb160463 | 594 | *tmpbuf = (char)PL_multi_close; |
8990e307 LW |
595 | tmpbuf[1] = '\0'; |
596 | s = tmpbuf; | |
597 | } | |
598 | q = strchr(s,'"') ? '\'' : '"'; | |
cea2e8a9 | 599 | Perl_croak(aTHX_ "Can't find string terminator %c%s%c anywhere before EOF",q,s,q); |
463ee0b2 | 600 | } |
79072805 | 601 | |
dd0ac2b9 FC |
602 | #include "feature.h" |
603 | ||
0d863452 | 604 | /* |
0d863452 RH |
605 | * Check whether the named feature is enabled. |
606 | */ | |
26ea9e12 | 607 | bool |
3fff3427 | 608 | Perl_feature_is_enabled(pTHX_ const char *const name, STRLEN namelen) |
0d863452 | 609 | { |
97aff369 | 610 | dVAR; |
4a731d7b | 611 | char he_name[8 + MAX_FEATURE_LEN] = "feature_"; |
7918f24d NC |
612 | |
613 | PERL_ARGS_ASSERT_FEATURE_IS_ENABLED; | |
ca4d40c4 FC |
614 | |
615 | assert(CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM); | |
7918f24d | 616 | |
26ea9e12 NC |
617 | if (namelen > MAX_FEATURE_LEN) |
618 | return FALSE; | |
3fff3427 | 619 | memcpy(&he_name[8], name, namelen); |
7d69d4a6 | 620 | |
c8ca97b0 NC |
621 | return cBOOL(cop_hints_fetch_pvn(PL_curcop, he_name, 8 + namelen, 0, |
622 | REFCOUNTED_HE_EXISTS)); | |
0d863452 RH |
623 | } |
624 | ||
ffb4593c | 625 | /* |
9cbb5ea2 GS |
626 | * experimental text filters for win32 carriage-returns, utf16-to-utf8 and |
627 | * utf16-to-utf8-reversed. | |
ffb4593c NT |
628 | */ |
629 | ||
c39cd008 GS |
630 | #ifdef PERL_CR_FILTER |
631 | static void | |
632 | strip_return(SV *sv) | |
633 | { | |
eb578fdb KW |
634 | const char *s = SvPVX_const(sv); |
635 | const char * const e = s + SvCUR(sv); | |
7918f24d NC |
636 | |
637 | PERL_ARGS_ASSERT_STRIP_RETURN; | |
638 | ||
c39cd008 GS |
639 | /* outer loop optimized to do nothing if there are no CR-LFs */ |
640 | while (s < e) { | |
641 | if (*s++ == '\r' && *s == '\n') { | |
642 | /* hit a CR-LF, need to copy the rest */ | |
eb578fdb | 643 | char *d = s - 1; |
c39cd008 GS |
644 | *d++ = *s++; |
645 | while (s < e) { | |
646 | if (*s == '\r' && s[1] == '\n') | |
647 | s++; | |
648 | *d++ = *s++; | |
649 | } | |
650 | SvCUR(sv) -= s - d; | |
651 | return; | |
652 | } | |
653 | } | |
654 | } | |
a868473f | 655 | |
76e3520e | 656 | STATIC I32 |
c39cd008 | 657 | S_cr_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
a868473f | 658 | { |
f54cb97a | 659 | const I32 count = FILTER_READ(idx+1, sv, maxlen); |
c39cd008 GS |
660 | if (count > 0 && !maxlen) |
661 | strip_return(sv); | |
662 | return count; | |
a868473f NIS |
663 | } |
664 | #endif | |
665 | ||
ffb4593c | 666 | /* |
8eaa0acf Z |
667 | =for apidoc Amx|void|lex_start|SV *line|PerlIO *rsfp|U32 flags |
668 | ||
669 | Creates and initialises a new lexer/parser state object, supplying | |
670 | a context in which to lex and parse from a new source of Perl code. | |
671 | A pointer to the new state object is placed in L</PL_parser>. An entry | |
672 | is made on the save stack so that upon unwinding the new state object | |
673 | will be destroyed and the former value of L</PL_parser> will be restored. | |
674 | Nothing else need be done to clean up the parsing context. | |
675 | ||
676 | The code to be parsed comes from I<line> and I<rsfp>. I<line>, if | |
677 | non-null, provides a string (in SV form) containing code to be parsed. | |
678 | A copy of the string is made, so subsequent modification of I<line> | |
679 | does not affect parsing. I<rsfp>, if non-null, provides an input stream | |
680 | from which code will be read to be parsed. If both are non-null, the | |
681 | code in I<line> comes first and must consist of complete lines of input, | |
682 | and I<rsfp> supplies the remainder of the source. | |
683 | ||
e368b3bd FC |
684 | The I<flags> parameter is reserved for future use. Currently it is only |
685 | used by perl internally, so extensions should always pass zero. | |
8eaa0acf Z |
686 | |
687 | =cut | |
688 | */ | |
ffb4593c | 689 | |
27fcb6ee | 690 | /* LEX_START_SAME_FILTER indicates that this is not a new file, so it |
87606032 NC |
691 | can share filters with the current parser. |
692 | LEX_START_DONT_CLOSE indicates that the file handle wasn't opened by the | |
693 | caller, hence isn't owned by the parser, so shouldn't be closed on parser | |
694 | destruction. This is used to handle the case of defaulting to reading the | |
695 | script from the standard input because no filename was given on the command | |
696 | line (without getting confused by situation where STDIN has been closed, so | |
697 | the script handle is opened on fd 0) */ | |
27fcb6ee | 698 | |
a0d0e21e | 699 | void |
8eaa0acf | 700 | Perl_lex_start(pTHX_ SV *line, PerlIO *rsfp, U32 flags) |
79072805 | 701 | { |
97aff369 | 702 | dVAR; |
6ef55633 | 703 | const char *s = NULL; |
5486870f | 704 | yy_parser *parser, *oparser; |
60d63348 | 705 | if (flags && flags & ~LEX_START_FLAGS) |
8eaa0acf | 706 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_start"); |
acdf0a21 DM |
707 | |
708 | /* create and initialise a parser */ | |
709 | ||
199e78b7 | 710 | Newxz(parser, 1, yy_parser); |
5486870f | 711 | parser->old_parser = oparser = PL_parser; |
acdf0a21 DM |
712 | PL_parser = parser; |
713 | ||
28ac2b49 Z |
714 | parser->stack = NULL; |
715 | parser->ps = NULL; | |
716 | parser->stack_size = 0; | |
acdf0a21 | 717 | |
e3abe207 DM |
718 | /* on scope exit, free this parser and restore any outer one */ |
719 | SAVEPARSER(parser); | |
7c4baf47 | 720 | parser->saved_curcop = PL_curcop; |
e3abe207 | 721 | |
acdf0a21 | 722 | /* initialise lexer state */ |
8990e307 | 723 | |
fb205e7a DM |
724 | #ifdef PERL_MAD |
725 | parser->curforce = -1; | |
726 | #else | |
727 | parser->nexttoke = 0; | |
728 | #endif | |
ca4cfd28 | 729 | parser->error_count = oparser ? oparser->error_count : 0; |
c2598295 | 730 | parser->copline = NOLINE; |
5afb0a62 | 731 | parser->lex_state = LEX_NORMAL; |
c2598295 | 732 | parser->expect = XSTATE; |
2f9285f8 | 733 | parser->rsfp = rsfp; |
27fcb6ee FC |
734 | parser->rsfp_filters = |
735 | !(flags & LEX_START_SAME_FILTER) || !oparser | |
d3cd8e11 FC |
736 | ? NULL |
737 | : MUTABLE_AV(SvREFCNT_inc( | |
738 | oparser->rsfp_filters | |
739 | ? oparser->rsfp_filters | |
740 | : (oparser->rsfp_filters = newAV()) | |
741 | )); | |
2f9285f8 | 742 | |
199e78b7 DM |
743 | Newx(parser->lex_brackstack, 120, char); |
744 | Newx(parser->lex_casestack, 12, char); | |
745 | *parser->lex_casestack = '\0'; | |
d794b522 | 746 | Newxz(parser->lex_shared, 1, LEXSHARED); |
02b34bbe | 747 | |
10efb74f | 748 | if (line) { |
0528fd32 | 749 | STRLEN len; |
10efb74f | 750 | s = SvPV_const(line, len); |
0abcdfa4 FC |
751 | parser->linestr = flags & LEX_START_COPIED |
752 | ? SvREFCNT_inc_simple_NN(line) | |
753 | : newSVpvn_flags(s, len, SvUTF8(line)); | |
11076590 | 754 | sv_catpvs(parser->linestr, "\n;"); |
0abcdfa4 FC |
755 | } else { |
756 | parser->linestr = newSVpvs("\n;"); | |
8990e307 | 757 | } |
f06b5848 DM |
758 | parser->oldoldbufptr = |
759 | parser->oldbufptr = | |
760 | parser->bufptr = | |
761 | parser->linestart = SvPVX(parser->linestr); | |
762 | parser->bufend = parser->bufptr + SvCUR(parser->linestr); | |
763 | parser->last_lop = parser->last_uni = NULL; | |
87606032 NC |
764 | parser->lex_flags = flags & (LEX_IGNORE_UTF8_HINTS|LEX_EVALBYTES |
765 | |LEX_DONT_CLOSE_RSFP); | |
737c24fc | 766 | |
60d63348 | 767 | parser->in_pod = parser->filtered = 0; |
79072805 | 768 | } |
a687059c | 769 | |
e3abe207 DM |
770 | |
771 | /* delete a parser object */ | |
772 | ||
773 | void | |
774 | Perl_parser_free(pTHX_ const yy_parser *parser) | |
775 | { | |
7918f24d NC |
776 | PERL_ARGS_ASSERT_PARSER_FREE; |
777 | ||
7c4baf47 | 778 | PL_curcop = parser->saved_curcop; |
bdc0bf6f DM |
779 | SvREFCNT_dec(parser->linestr); |
780 | ||
87606032 | 781 | if (PL_parser->lex_flags & LEX_DONT_CLOSE_RSFP) |
2f9285f8 | 782 | PerlIO_clearerr(parser->rsfp); |
799361c3 SH |
783 | else if (parser->rsfp && (!parser->old_parser || |
784 | (parser->old_parser && parser->rsfp != parser->old_parser->rsfp))) | |
2f9285f8 | 785 | PerlIO_close(parser->rsfp); |
5486870f | 786 | SvREFCNT_dec(parser->rsfp_filters); |
10002bc1 FC |
787 | SvREFCNT_dec(parser->lex_stuff); |
788 | SvREFCNT_dec(parser->sublex_info.repl); | |
3ac7ff8f FC |
789 | |
790 | Safefree(parser->lex_brackstack); | |
791 | Safefree(parser->lex_casestack); | |
792 | Safefree(parser->lex_shared); | |
793 | PL_parser = parser->old_parser; | |
794 | Safefree(parser); | |
795 | } | |
796 | ||
797 | void | |
798 | Perl_parser_free_nexttoke_ops(pTHX_ yy_parser *parser, OPSLAB *slab) | |
799 | { | |
800 | #ifdef PERL_MAD | |
801 | I32 nexttoke = parser->lasttoke; | |
802 | #else | |
803 | I32 nexttoke = parser->nexttoke; | |
804 | #endif | |
805 | PERL_ARGS_ASSERT_PARSER_FREE_NEXTTOKE_OPS; | |
3ce3dcd9 FC |
806 | while (nexttoke--) { |
807 | #ifdef PERL_MAD | |
808 | if (S_is_opval_token(parser->nexttoke[nexttoke].next_type | |
3ac7ff8f FC |
809 | & 0xffff) |
810 | && parser->nexttoke[nexttoke].next_val.opval | |
811 | && parser->nexttoke[nexttoke].next_val.opval->op_slabbed | |
812 | && OpSLAB(parser->nexttoke[nexttoke].next_val.opval) == slab) { | |
813 | op_free(parser->nexttoke[nexttoke].next_val.opval); | |
814 | parser->nexttoke[nexttoke].next_val.opval = NULL; | |
815 | } | |
3ce3dcd9 | 816 | #else |
3ac7ff8f FC |
817 | if (S_is_opval_token(parser->nexttype[nexttoke] & 0xffff) |
818 | && parser->nextval[nexttoke].opval | |
819 | && parser->nextval[nexttoke].opval->op_slabbed | |
820 | && OpSLAB(parser->nextval[nexttoke].opval) == slab) { | |
3ce3dcd9 | 821 | op_free(parser->nextval[nexttoke].opval); |
3ac7ff8f FC |
822 | parser->nextval[nexttoke].opval = NULL; |
823 | } | |
3ce3dcd9 FC |
824 | #endif |
825 | } | |
e3abe207 DM |
826 | } |
827 | ||
828 | ||
ffb4593c | 829 | /* |
f0e67a1d Z |
830 | =for apidoc AmxU|SV *|PL_parser-E<gt>linestr |
831 | ||
832 | Buffer scalar containing the chunk currently under consideration of the | |
833 | text currently being lexed. This is always a plain string scalar (for | |
834 | which C<SvPOK> is true). It is not intended to be used as a scalar by | |
835 | normal scalar means; instead refer to the buffer directly by the pointer | |
836 | variables described below. | |
837 | ||
838 | The lexer maintains various C<char*> pointers to things in the | |
839 | C<PL_parser-E<gt>linestr> buffer. If C<PL_parser-E<gt>linestr> is ever | |
840 | reallocated, all of these pointers must be updated. Don't attempt to | |
841 | do this manually, but rather use L</lex_grow_linestr> if you need to | |
842 | reallocate the buffer. | |
843 | ||
844 | The content of the text chunk in the buffer is commonly exactly one | |
845 | complete line of input, up to and including a newline terminator, | |
846 | but there are situations where it is otherwise. The octets of the | |
847 | buffer may be intended to be interpreted as either UTF-8 or Latin-1. | |
848 | The function L</lex_bufutf8> tells you which. Do not use the C<SvUTF8> | |
849 | flag on this scalar, which may disagree with it. | |
850 | ||
851 | For direct examination of the buffer, the variable | |
852 | L</PL_parser-E<gt>bufend> points to the end of the buffer. The current | |
853 | lexing position is pointed to by L</PL_parser-E<gt>bufptr>. Direct use | |
854 | of these pointers is usually preferable to examination of the scalar | |
855 | through normal scalar means. | |
856 | ||
857 | =for apidoc AmxU|char *|PL_parser-E<gt>bufend | |
858 | ||
859 | Direct pointer to the end of the chunk of text currently being lexed, the | |
860 | end of the lexer buffer. This is equal to C<SvPVX(PL_parser-E<gt>linestr) | |
861 | + SvCUR(PL_parser-E<gt>linestr)>. A NUL character (zero octet) is | |
862 | always located at the end of the buffer, and does not count as part of | |
863 | the buffer's contents. | |
864 | ||
865 | =for apidoc AmxU|char *|PL_parser-E<gt>bufptr | |
866 | ||
867 | Points to the current position of lexing inside the lexer buffer. | |
868 | Characters around this point may be freely examined, within | |
869 | the range delimited by C<SvPVX(L</PL_parser-E<gt>linestr>)> and | |
870 | L</PL_parser-E<gt>bufend>. The octets of the buffer may be intended to be | |
871 | interpreted as either UTF-8 or Latin-1, as indicated by L</lex_bufutf8>. | |
872 | ||
873 | Lexing code (whether in the Perl core or not) moves this pointer past | |
874 | the characters that it consumes. It is also expected to perform some | |
875 | bookkeeping whenever a newline character is consumed. This movement | |
876 | can be more conveniently performed by the function L</lex_read_to>, | |
877 | which handles newlines appropriately. | |
878 | ||
879 | Interpretation of the buffer's octets can be abstracted out by | |
880 | using the slightly higher-level functions L</lex_peek_unichar> and | |
881 | L</lex_read_unichar>. | |
882 | ||
883 | =for apidoc AmxU|char *|PL_parser-E<gt>linestart | |
884 | ||
885 | Points to the start of the current line inside the lexer buffer. | |
886 | This is useful for indicating at which column an error occurred, and | |
887 | not much else. This must be updated by any lexing code that consumes | |
888 | a newline; the function L</lex_read_to> handles this detail. | |
889 | ||
890 | =cut | |
891 | */ | |
892 | ||
893 | /* | |
894 | =for apidoc Amx|bool|lex_bufutf8 | |
895 | ||
896 | Indicates whether the octets in the lexer buffer | |
897 | (L</PL_parser-E<gt>linestr>) should be interpreted as the UTF-8 encoding | |
898 | of Unicode characters. If not, they should be interpreted as Latin-1 | |
899 | characters. This is analogous to the C<SvUTF8> flag for scalars. | |
900 | ||
901 | In UTF-8 mode, it is not guaranteed that the lexer buffer actually | |
902 | contains valid UTF-8. Lexing code must be robust in the face of invalid | |
903 | encoding. | |
904 | ||
905 | The actual C<SvUTF8> flag of the L</PL_parser-E<gt>linestr> scalar | |
906 | is significant, but not the whole story regarding the input character | |
907 | encoding. Normally, when a file is being read, the scalar contains octets | |
908 | and its C<SvUTF8> flag is off, but the octets should be interpreted as | |
909 | UTF-8 if the C<use utf8> pragma is in effect. During a string eval, | |
910 | however, the scalar may have the C<SvUTF8> flag on, and in this case its | |
911 | octets should be interpreted as UTF-8 unless the C<use bytes> pragma | |
912 | is in effect. This logic may change in the future; use this function | |
913 | instead of implementing the logic yourself. | |
914 | ||
915 | =cut | |
916 | */ | |
917 | ||
918 | bool | |
919 | Perl_lex_bufutf8(pTHX) | |
920 | { | |
921 | return UTF; | |
922 | } | |
923 | ||
924 | /* | |
925 | =for apidoc Amx|char *|lex_grow_linestr|STRLEN len | |
926 | ||
927 | Reallocates the lexer buffer (L</PL_parser-E<gt>linestr>) to accommodate | |
928 | at least I<len> octets (including terminating NUL). Returns a | |
929 | pointer to the reallocated buffer. This is necessary before making | |
930 | any direct modification of the buffer that would increase its length. | |
931 | L</lex_stuff_pvn> provides a more convenient way to insert text into | |
932 | the buffer. | |
933 | ||
934 | Do not use C<SvGROW> or C<sv_grow> directly on C<PL_parser-E<gt>linestr>; | |
935 | this function updates all of the lexer's variables that point directly | |
936 | into the buffer. | |
937 | ||
938 | =cut | |
939 | */ | |
940 | ||
941 | char * | |
942 | Perl_lex_grow_linestr(pTHX_ STRLEN len) | |
943 | { | |
944 | SV *linestr; | |
945 | char *buf; | |
946 | STRLEN bufend_pos, bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
c7641931 | 947 | STRLEN linestart_pos, last_uni_pos, last_lop_pos, re_eval_start_pos; |
f0e67a1d Z |
948 | linestr = PL_parser->linestr; |
949 | buf = SvPVX(linestr); | |
950 | if (len <= SvLEN(linestr)) | |
951 | return buf; | |
952 | bufend_pos = PL_parser->bufend - buf; | |
953 | bufptr_pos = PL_parser->bufptr - buf; | |
954 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
955 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
956 | linestart_pos = PL_parser->linestart - buf; | |
957 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
958 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
3328ab5a FC |
959 | re_eval_start_pos = PL_parser->lex_shared->re_eval_start ? |
960 | PL_parser->lex_shared->re_eval_start - buf : 0; | |
c7641931 | 961 | |
f0e67a1d | 962 | buf = sv_grow(linestr, len); |
c7641931 | 963 | |
f0e67a1d Z |
964 | PL_parser->bufend = buf + bufend_pos; |
965 | PL_parser->bufptr = buf + bufptr_pos; | |
966 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
967 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
968 | PL_parser->linestart = buf + linestart_pos; | |
969 | if (PL_parser->last_uni) | |
970 | PL_parser->last_uni = buf + last_uni_pos; | |
971 | if (PL_parser->last_lop) | |
972 | PL_parser->last_lop = buf + last_lop_pos; | |
3328ab5a FC |
973 | if (PL_parser->lex_shared->re_eval_start) |
974 | PL_parser->lex_shared->re_eval_start = buf + re_eval_start_pos; | |
f0e67a1d Z |
975 | return buf; |
976 | } | |
977 | ||
978 | /* | |
83aa740e | 979 | =for apidoc Amx|void|lex_stuff_pvn|const char *pv|STRLEN len|U32 flags |
f0e67a1d Z |
980 | |
981 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
982 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
983 | reallocating the buffer if necessary. This means that lexing code that | |
984 | runs later will see the characters as if they had appeared in the input. | |
985 | It is not recommended to do this as part of normal parsing, and most | |
986 | uses of this facility run the risk of the inserted characters being | |
987 | interpreted in an unintended manner. | |
988 | ||
989 | The string to be inserted is represented by I<len> octets starting | |
990 | at I<pv>. These octets are interpreted as either UTF-8 or Latin-1, | |
991 | according to whether the C<LEX_STUFF_UTF8> flag is set in I<flags>. | |
992 | The characters are recoded for the lexer buffer, according to how the | |
993 | buffer is currently being interpreted (L</lex_bufutf8>). If a string | |
9dcc53ea | 994 | to be inserted is available as a Perl scalar, the L</lex_stuff_sv> |
f0e67a1d Z |
995 | function is more convenient. |
996 | ||
997 | =cut | |
998 | */ | |
999 | ||
1000 | void | |
83aa740e | 1001 | Perl_lex_stuff_pvn(pTHX_ const char *pv, STRLEN len, U32 flags) |
f0e67a1d | 1002 | { |
749123ff | 1003 | dVAR; |
f0e67a1d Z |
1004 | char *bufptr; |
1005 | PERL_ARGS_ASSERT_LEX_STUFF_PVN; | |
1006 | if (flags & ~(LEX_STUFF_UTF8)) | |
1007 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_pvn"); | |
1008 | if (UTF) { | |
1009 | if (flags & LEX_STUFF_UTF8) { | |
1010 | goto plain_copy; | |
1011 | } else { | |
54d004e8 | 1012 | STRLEN highhalf = 0; /* Count of variants */ |
83aa740e | 1013 | const char *p, *e = pv+len; |
54d004e8 KW |
1014 | for (p = pv; p != e; p++) { |
1015 | if (! UTF8_IS_INVARIANT(*p)) { | |
1016 | highhalf++; | |
1017 | } | |
1018 | } | |
f0e67a1d Z |
1019 | if (!highhalf) |
1020 | goto plain_copy; | |
1021 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len+highhalf); | |
1022 | bufptr = PL_parser->bufptr; | |
1023 | Move(bufptr, bufptr+len+highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
1024 | SvCUR_set(PL_parser->linestr, |
1025 | SvCUR(PL_parser->linestr) + len+highhalf); | |
f0e67a1d Z |
1026 | PL_parser->bufend += len+highhalf; |
1027 | for (p = pv; p != e; p++) { | |
1028 | U8 c = (U8)*p; | |
54d004e8 KW |
1029 | if (! UTF8_IS_INVARIANT(c)) { |
1030 | *bufptr++ = UTF8_TWO_BYTE_HI(c); | |
1031 | *bufptr++ = UTF8_TWO_BYTE_LO(c); | |
f0e67a1d Z |
1032 | } else { |
1033 | *bufptr++ = (char)c; | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | } else { | |
1038 | if (flags & LEX_STUFF_UTF8) { | |
1039 | STRLEN highhalf = 0; | |
83aa740e | 1040 | const char *p, *e = pv+len; |
f0e67a1d Z |
1041 | for (p = pv; p != e; p++) { |
1042 | U8 c = (U8)*p; | |
54d004e8 | 1043 | if (UTF8_IS_ABOVE_LATIN1(c)) { |
f0e67a1d Z |
1044 | Perl_croak(aTHX_ "Lexing code attempted to stuff " |
1045 | "non-Latin-1 character into Latin-1 input"); | |
54d004e8 | 1046 | } else if (UTF8_IS_NEXT_CHAR_DOWNGRADEABLE(p, e)) { |
f0e67a1d Z |
1047 | p++; |
1048 | highhalf++; | |
54d004e8 | 1049 | } else if (! UTF8_IS_INVARIANT(c)) { |
f0e67a1d Z |
1050 | /* malformed UTF-8 */ |
1051 | ENTER; | |
1052 | SAVESPTR(PL_warnhook); | |
1053 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
1054 | utf8n_to_uvuni((U8*)p, e-p, NULL, 0); | |
1055 | LEAVE; | |
1056 | } | |
1057 | } | |
1058 | if (!highhalf) | |
1059 | goto plain_copy; | |
1060 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len-highhalf); | |
1061 | bufptr = PL_parser->bufptr; | |
1062 | Move(bufptr, bufptr+len-highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
1063 | SvCUR_set(PL_parser->linestr, |
1064 | SvCUR(PL_parser->linestr) + len-highhalf); | |
f0e67a1d | 1065 | PL_parser->bufend += len-highhalf; |
54d004e8 KW |
1066 | p = pv; |
1067 | while (p < e) { | |
1068 | if (UTF8_IS_INVARIANT(*p)) { | |
1069 | *bufptr++ = *p; | |
1070 | p++; | |
f0e67a1d | 1071 | } |
54d004e8 KW |
1072 | else { |
1073 | assert(p < e -1 ); | |
1074 | *bufptr++ = TWO_BYTE_UTF8_TO_UNI(*p, *(p+1)); | |
1075 | p += 2; | |
1076 | } | |
f0e67a1d Z |
1077 | } |
1078 | } else { | |
54d004e8 | 1079 | plain_copy: |
f0e67a1d Z |
1080 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len); |
1081 | bufptr = PL_parser->bufptr; | |
1082 | Move(bufptr, bufptr+len, PL_parser->bufend+1-bufptr, char); | |
255fdf19 | 1083 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) + len); |
f0e67a1d Z |
1084 | PL_parser->bufend += len; |
1085 | Copy(pv, bufptr, len, char); | |
1086 | } | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* | |
9dcc53ea Z |
1091 | =for apidoc Amx|void|lex_stuff_pv|const char *pv|U32 flags |
1092 | ||
1093 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1094 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1095 | reallocating the buffer if necessary. This means that lexing code that | |
1096 | runs later will see the characters as if they had appeared in the input. | |
1097 | It is not recommended to do this as part of normal parsing, and most | |
1098 | uses of this facility run the risk of the inserted characters being | |
1099 | interpreted in an unintended manner. | |
1100 | ||
1101 | The string to be inserted is represented by octets starting at I<pv> | |
1102 | and continuing to the first nul. These octets are interpreted as either | |
1103 | UTF-8 or Latin-1, according to whether the C<LEX_STUFF_UTF8> flag is set | |
1104 | in I<flags>. The characters are recoded for the lexer buffer, according | |
1105 | to how the buffer is currently being interpreted (L</lex_bufutf8>). | |
1106 | If it is not convenient to nul-terminate a string to be inserted, the | |
1107 | L</lex_stuff_pvn> function is more appropriate. | |
1108 | ||
1109 | =cut | |
1110 | */ | |
1111 | ||
1112 | void | |
1113 | Perl_lex_stuff_pv(pTHX_ const char *pv, U32 flags) | |
1114 | { | |
1115 | PERL_ARGS_ASSERT_LEX_STUFF_PV; | |
1116 | lex_stuff_pvn(pv, strlen(pv), flags); | |
1117 | } | |
1118 | ||
1119 | /* | |
f0e67a1d Z |
1120 | =for apidoc Amx|void|lex_stuff_sv|SV *sv|U32 flags |
1121 | ||
1122 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1123 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1124 | reallocating the buffer if necessary. This means that lexing code that | |
1125 | runs later will see the characters as if they had appeared in the input. | |
1126 | It is not recommended to do this as part of normal parsing, and most | |
1127 | uses of this facility run the risk of the inserted characters being | |
1128 | interpreted in an unintended manner. | |
1129 | ||
1130 | The string to be inserted is the string value of I<sv>. The characters | |
1131 | are recoded for the lexer buffer, according to how the buffer is currently | |
9dcc53ea | 1132 | being interpreted (L</lex_bufutf8>). If a string to be inserted is |
f0e67a1d Z |
1133 | not already a Perl scalar, the L</lex_stuff_pvn> function avoids the |
1134 | need to construct a scalar. | |
1135 | ||
1136 | =cut | |
1137 | */ | |
1138 | ||
1139 | void | |
1140 | Perl_lex_stuff_sv(pTHX_ SV *sv, U32 flags) | |
1141 | { | |
1142 | char *pv; | |
1143 | STRLEN len; | |
1144 | PERL_ARGS_ASSERT_LEX_STUFF_SV; | |
1145 | if (flags) | |
1146 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_sv"); | |
1147 | pv = SvPV(sv, len); | |
1148 | lex_stuff_pvn(pv, len, flags | (SvUTF8(sv) ? LEX_STUFF_UTF8 : 0)); | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | =for apidoc Amx|void|lex_unstuff|char *ptr | |
1153 | ||
1154 | Discards text about to be lexed, from L</PL_parser-E<gt>bufptr> up to | |
1155 | I<ptr>. Text following I<ptr> will be moved, and the buffer shortened. | |
1156 | This hides the discarded text from any lexing code that runs later, | |
1157 | as if the text had never appeared. | |
1158 | ||
1159 | This is not the normal way to consume lexed text. For that, use | |
1160 | L</lex_read_to>. | |
1161 | ||
1162 | =cut | |
1163 | */ | |
1164 | ||
1165 | void | |
1166 | Perl_lex_unstuff(pTHX_ char *ptr) | |
1167 | { | |
1168 | char *buf, *bufend; | |
1169 | STRLEN unstuff_len; | |
1170 | PERL_ARGS_ASSERT_LEX_UNSTUFF; | |
1171 | buf = PL_parser->bufptr; | |
1172 | if (ptr < buf) | |
1173 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1174 | if (ptr == buf) | |
1175 | return; | |
1176 | bufend = PL_parser->bufend; | |
1177 | if (ptr > bufend) | |
1178 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1179 | unstuff_len = ptr - buf; | |
1180 | Move(ptr, buf, bufend+1-ptr, char); | |
1181 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - unstuff_len); | |
1182 | PL_parser->bufend = bufend - unstuff_len; | |
1183 | } | |
1184 | ||
1185 | /* | |
1186 | =for apidoc Amx|void|lex_read_to|char *ptr | |
1187 | ||
1188 | Consume text in the lexer buffer, from L</PL_parser-E<gt>bufptr> up | |
1189 | to I<ptr>. This advances L</PL_parser-E<gt>bufptr> to match I<ptr>, | |
1190 | performing the correct bookkeeping whenever a newline character is passed. | |
1191 | This is the normal way to consume lexed text. | |
1192 | ||
1193 | Interpretation of the buffer's octets can be abstracted out by | |
1194 | using the slightly higher-level functions L</lex_peek_unichar> and | |
1195 | L</lex_read_unichar>. | |
1196 | ||
1197 | =cut | |
1198 | */ | |
1199 | ||
1200 | void | |
1201 | Perl_lex_read_to(pTHX_ char *ptr) | |
1202 | { | |
1203 | char *s; | |
1204 | PERL_ARGS_ASSERT_LEX_READ_TO; | |
1205 | s = PL_parser->bufptr; | |
1206 | if (ptr < s || ptr > PL_parser->bufend) | |
1207 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_to"); | |
1208 | for (; s != ptr; s++) | |
1209 | if (*s == '\n') { | |
83944c01 | 1210 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
1211 | PL_parser->linestart = s+1; |
1212 | } | |
1213 | PL_parser->bufptr = ptr; | |
1214 | } | |
1215 | ||
1216 | /* | |
1217 | =for apidoc Amx|void|lex_discard_to|char *ptr | |
1218 | ||
1219 | Discards the first part of the L</PL_parser-E<gt>linestr> buffer, | |
1220 | up to I<ptr>. The remaining content of the buffer will be moved, and | |
1221 | all pointers into the buffer updated appropriately. I<ptr> must not | |
1222 | be later in the buffer than the position of L</PL_parser-E<gt>bufptr>: | |
1223 | it is not permitted to discard text that has yet to be lexed. | |
1224 | ||
1225 | Normally it is not necessarily to do this directly, because it suffices to | |
1226 | use the implicit discarding behaviour of L</lex_next_chunk> and things | |
1227 | based on it. However, if a token stretches across multiple lines, | |
1f317c95 | 1228 | and the lexing code has kept multiple lines of text in the buffer for |
f0e67a1d Z |
1229 | that purpose, then after completion of the token it would be wise to |
1230 | explicitly discard the now-unneeded earlier lines, to avoid future | |
1231 | multi-line tokens growing the buffer without bound. | |
1232 | ||
1233 | =cut | |
1234 | */ | |
1235 | ||
1236 | void | |
1237 | Perl_lex_discard_to(pTHX_ char *ptr) | |
1238 | { | |
1239 | char *buf; | |
1240 | STRLEN discard_len; | |
1241 | PERL_ARGS_ASSERT_LEX_DISCARD_TO; | |
1242 | buf = SvPVX(PL_parser->linestr); | |
1243 | if (ptr < buf) | |
1244 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1245 | if (ptr == buf) | |
1246 | return; | |
1247 | if (ptr > PL_parser->bufptr) | |
1248 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1249 | discard_len = ptr - buf; | |
1250 | if (PL_parser->oldbufptr < ptr) | |
1251 | PL_parser->oldbufptr = ptr; | |
1252 | if (PL_parser->oldoldbufptr < ptr) | |
1253 | PL_parser->oldoldbufptr = ptr; | |
1254 | if (PL_parser->last_uni && PL_parser->last_uni < ptr) | |
1255 | PL_parser->last_uni = NULL; | |
1256 | if (PL_parser->last_lop && PL_parser->last_lop < ptr) | |
1257 | PL_parser->last_lop = NULL; | |
1258 | Move(ptr, buf, PL_parser->bufend+1-ptr, char); | |
1259 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - discard_len); | |
1260 | PL_parser->bufend -= discard_len; | |
1261 | PL_parser->bufptr -= discard_len; | |
1262 | PL_parser->oldbufptr -= discard_len; | |
1263 | PL_parser->oldoldbufptr -= discard_len; | |
1264 | if (PL_parser->last_uni) | |
1265 | PL_parser->last_uni -= discard_len; | |
1266 | if (PL_parser->last_lop) | |
1267 | PL_parser->last_lop -= discard_len; | |
1268 | } | |
1269 | ||
1270 | /* | |
1271 | =for apidoc Amx|bool|lex_next_chunk|U32 flags | |
1272 | ||
1273 | Reads in the next chunk of text to be lexed, appending it to | |
1274 | L</PL_parser-E<gt>linestr>. This should be called when lexing code has | |
1275 | looked to the end of the current chunk and wants to know more. It is | |
1276 | usual, but not necessary, for lexing to have consumed the entirety of | |
1277 | the current chunk at this time. | |
1278 | ||
1279 | If L</PL_parser-E<gt>bufptr> is pointing to the very end of the current | |
1280 | chunk (i.e., the current chunk has been entirely consumed), normally the | |
1281 | current chunk will be discarded at the same time that the new chunk is | |
1282 | read in. If I<flags> includes C<LEX_KEEP_PREVIOUS>, the current chunk | |
1283 | will not be discarded. If the current chunk has not been entirely | |
1284 | consumed, then it will not be discarded regardless of the flag. | |
1285 | ||
1286 | Returns true if some new text was added to the buffer, or false if the | |
1287 | buffer has reached the end of the input text. | |
1288 | ||
1289 | =cut | |
1290 | */ | |
1291 | ||
1292 | #define LEX_FAKE_EOF 0x80000000 | |
112d1284 | 1293 | #define LEX_NO_TERM 0x40000000 |
f0e67a1d Z |
1294 | |
1295 | bool | |
1296 | Perl_lex_next_chunk(pTHX_ U32 flags) | |
1297 | { | |
1298 | SV *linestr; | |
1299 | char *buf; | |
1300 | STRLEN old_bufend_pos, new_bufend_pos; | |
1301 | STRLEN bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
1302 | STRLEN linestart_pos, last_uni_pos, last_lop_pos; | |
17cc9359 | 1303 | bool got_some_for_debugger = 0; |
f0e67a1d | 1304 | bool got_some; |
112d1284 | 1305 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_FAKE_EOF|LEX_NO_TERM)) |
f0e67a1d | 1306 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_next_chunk"); |
f0e67a1d Z |
1307 | linestr = PL_parser->linestr; |
1308 | buf = SvPVX(linestr); | |
1309 | if (!(flags & LEX_KEEP_PREVIOUS) && | |
1310 | PL_parser->bufptr == PL_parser->bufend) { | |
1311 | old_bufend_pos = bufptr_pos = oldbufptr_pos = oldoldbufptr_pos = 0; | |
1312 | linestart_pos = 0; | |
1313 | if (PL_parser->last_uni != PL_parser->bufend) | |
1314 | PL_parser->last_uni = NULL; | |
1315 | if (PL_parser->last_lop != PL_parser->bufend) | |
1316 | PL_parser->last_lop = NULL; | |
1317 | last_uni_pos = last_lop_pos = 0; | |
1318 | *buf = 0; | |
1319 | SvCUR(linestr) = 0; | |
1320 | } else { | |
1321 | old_bufend_pos = PL_parser->bufend - buf; | |
1322 | bufptr_pos = PL_parser->bufptr - buf; | |
1323 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
1324 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
1325 | linestart_pos = PL_parser->linestart - buf; | |
1326 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
1327 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
1328 | } | |
1329 | if (flags & LEX_FAKE_EOF) { | |
1330 | goto eof; | |
60d63348 | 1331 | } else if (!PL_parser->rsfp && !PL_parser->filtered) { |
f0e67a1d Z |
1332 | got_some = 0; |
1333 | } else if (filter_gets(linestr, old_bufend_pos)) { | |
1334 | got_some = 1; | |
17cc9359 | 1335 | got_some_for_debugger = 1; |
112d1284 FC |
1336 | } else if (flags & LEX_NO_TERM) { |
1337 | got_some = 0; | |
f0e67a1d | 1338 | } else { |
580561a3 Z |
1339 | if (!SvPOK(linestr)) /* can get undefined by filter_gets */ |
1340 | sv_setpvs(linestr, ""); | |
f0e67a1d Z |
1341 | eof: |
1342 | /* End of real input. Close filehandle (unless it was STDIN), | |
1343 | * then add implicit termination. | |
1344 | */ | |
87606032 | 1345 | if (PL_parser->lex_flags & LEX_DONT_CLOSE_RSFP) |
f0e67a1d Z |
1346 | PerlIO_clearerr(PL_parser->rsfp); |
1347 | else if (PL_parser->rsfp) | |
1348 | (void)PerlIO_close(PL_parser->rsfp); | |
1349 | PL_parser->rsfp = NULL; | |
60d63348 | 1350 | PL_parser->in_pod = PL_parser->filtered = 0; |
f0e67a1d Z |
1351 | #ifdef PERL_MAD |
1352 | if (PL_madskills && !PL_in_eval && (PL_minus_p || PL_minus_n)) | |
1353 | PL_faketokens = 1; | |
1354 | #endif | |
1355 | if (!PL_in_eval && PL_minus_p) { | |
1356 | sv_catpvs(linestr, | |
1357 | /*{*/";}continue{print or die qq(-p destination: $!\\n);}"); | |
1358 | PL_minus_n = PL_minus_p = 0; | |
1359 | } else if (!PL_in_eval && PL_minus_n) { | |
1360 | sv_catpvs(linestr, /*{*/";}"); | |
1361 | PL_minus_n = 0; | |
1362 | } else | |
1363 | sv_catpvs(linestr, ";"); | |
1364 | got_some = 1; | |
1365 | } | |
1366 | buf = SvPVX(linestr); | |
1367 | new_bufend_pos = SvCUR(linestr); | |
1368 | PL_parser->bufend = buf + new_bufend_pos; | |
1369 | PL_parser->bufptr = buf + bufptr_pos; | |
1370 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
1371 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
1372 | PL_parser->linestart = buf + linestart_pos; | |
1373 | if (PL_parser->last_uni) | |
1374 | PL_parser->last_uni = buf + last_uni_pos; | |
1375 | if (PL_parser->last_lop) | |
1376 | PL_parser->last_lop = buf + last_lop_pos; | |
17cc9359 | 1377 | if (got_some_for_debugger && (PERLDB_LINE || PERLDB_SAVESRC) && |
f0e67a1d Z |
1378 | PL_curstash != PL_debstash) { |
1379 | /* debugger active and we're not compiling the debugger code, | |
1380 | * so store the line into the debugger's array of lines | |
1381 | */ | |
1382 | update_debugger_info(NULL, buf+old_bufend_pos, | |
1383 | new_bufend_pos-old_bufend_pos); | |
1384 | } | |
1385 | return got_some; | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | =for apidoc Amx|I32|lex_peek_unichar|U32 flags | |
1390 | ||
1391 | Looks ahead one (Unicode) character in the text currently being lexed. | |
1392 | Returns the codepoint (unsigned integer value) of the next character, | |
1393 | or -1 if lexing has reached the end of the input text. To consume the | |
1394 | peeked character, use L</lex_read_unichar>. | |
1395 | ||
1396 | If the next character is in (or extends into) the next chunk of input | |
1397 | text, the next chunk will be read in. Normally the current chunk will be | |
1398 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1399 | then the current chunk will not be discarded. | |
1400 | ||
1401 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1402 | is encountered, an exception is generated. | |
1403 | ||
1404 | =cut | |
1405 | */ | |
1406 | ||
1407 | I32 | |
1408 | Perl_lex_peek_unichar(pTHX_ U32 flags) | |
1409 | { | |
749123ff | 1410 | dVAR; |
f0e67a1d Z |
1411 | char *s, *bufend; |
1412 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1413 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_peek_unichar"); | |
1414 | s = PL_parser->bufptr; | |
1415 | bufend = PL_parser->bufend; | |
1416 | if (UTF) { | |
1417 | U8 head; | |
1418 | I32 unichar; | |
1419 | STRLEN len, retlen; | |
1420 | if (s == bufend) { | |
1421 | if (!lex_next_chunk(flags)) | |
1422 | return -1; | |
1423 | s = PL_parser->bufptr; | |
1424 | bufend = PL_parser->bufend; | |
1425 | } | |
1426 | head = (U8)*s; | |
54d004e8 | 1427 | if (UTF8_IS_INVARIANT(head)) |
f0e67a1d | 1428 | return head; |
54d004e8 KW |
1429 | if (UTF8_IS_START(head)) { |
1430 | len = UTF8SKIP(&head); | |
f0e67a1d Z |
1431 | while ((STRLEN)(bufend-s) < len) { |
1432 | if (!lex_next_chunk(flags | LEX_KEEP_PREVIOUS)) | |
1433 | break; | |
1434 | s = PL_parser->bufptr; | |
1435 | bufend = PL_parser->bufend; | |
1436 | } | |
1437 | } | |
1438 | unichar = utf8n_to_uvuni((U8*)s, bufend-s, &retlen, UTF8_CHECK_ONLY); | |
1439 | if (retlen == (STRLEN)-1) { | |
1440 | /* malformed UTF-8 */ | |
1441 | ENTER; | |
1442 | SAVESPTR(PL_warnhook); | |
1443 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
1444 | utf8n_to_uvuni((U8*)s, bufend-s, NULL, 0); | |
1445 | LEAVE; | |
1446 | } | |
1447 | return unichar; | |
1448 | } else { | |
1449 | if (s == bufend) { | |
1450 | if (!lex_next_chunk(flags)) | |
1451 | return -1; | |
1452 | s = PL_parser->bufptr; | |
1453 | } | |
1454 | return (U8)*s; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | /* | |
1459 | =for apidoc Amx|I32|lex_read_unichar|U32 flags | |
1460 | ||
1461 | Reads the next (Unicode) character in the text currently being lexed. | |
1462 | Returns the codepoint (unsigned integer value) of the character read, | |
1463 | and moves L</PL_parser-E<gt>bufptr> past the character, or returns -1 | |
1464 | if lexing has reached the end of the input text. To non-destructively | |
1465 | examine the next character, use L</lex_peek_unichar> instead. | |
1466 | ||
1467 | If the next character is in (or extends into) the next chunk of input | |
1468 | text, the next chunk will be read in. Normally the current chunk will be | |
1469 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1470 | then the current chunk will not be discarded. | |
1471 | ||
1472 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1473 | is encountered, an exception is generated. | |
1474 | ||
1475 | =cut | |
1476 | */ | |
1477 | ||
1478 | I32 | |
1479 | Perl_lex_read_unichar(pTHX_ U32 flags) | |
1480 | { | |
1481 | I32 c; | |
1482 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1483 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_unichar"); | |
1484 | c = lex_peek_unichar(flags); | |
1485 | if (c != -1) { | |
1486 | if (c == '\n') | |
83944c01 | 1487 | COPLINE_INC_WITH_HERELINES; |
d9018cbe EB |
1488 | if (UTF) |
1489 | PL_parser->bufptr += UTF8SKIP(PL_parser->bufptr); | |
1490 | else | |
1491 | ++(PL_parser->bufptr); | |
f0e67a1d Z |
1492 | } |
1493 | return c; | |
1494 | } | |
1495 | ||
1496 | /* | |
1497 | =for apidoc Amx|void|lex_read_space|U32 flags | |
1498 | ||
1499 | Reads optional spaces, in Perl style, in the text currently being | |
1500 | lexed. The spaces may include ordinary whitespace characters and | |
1501 | Perl-style comments. C<#line> directives are processed if encountered. | |
1502 | L</PL_parser-E<gt>bufptr> is moved past the spaces, so that it points | |
1503 | at a non-space character (or the end of the input text). | |
1504 | ||
1505 | If spaces extend into the next chunk of input text, the next chunk will | |
1506 | be read in. Normally the current chunk will be discarded at the same | |
1507 | time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> then the current | |
1508 | chunk will not be discarded. | |
1509 | ||
1510 | =cut | |
1511 | */ | |
1512 | ||
f0998909 Z |
1513 | #define LEX_NO_NEXT_CHUNK 0x80000000 |
1514 | ||
f0e67a1d Z |
1515 | void |
1516 | Perl_lex_read_space(pTHX_ U32 flags) | |
1517 | { | |
1518 | char *s, *bufend; | |
1519 | bool need_incline = 0; | |
f0998909 | 1520 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_NO_NEXT_CHUNK)) |
f0e67a1d Z |
1521 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_space"); |
1522 | #ifdef PERL_MAD | |
1523 | if (PL_skipwhite) { | |
1524 | sv_free(PL_skipwhite); | |
1525 | PL_skipwhite = NULL; | |
1526 | } | |
1527 | if (PL_madskills) | |
1528 | PL_skipwhite = newSVpvs(""); | |
1529 | #endif /* PERL_MAD */ | |
1530 | s = PL_parser->bufptr; | |
1531 | bufend = PL_parser->bufend; | |
1532 | while (1) { | |
1533 | char c = *s; | |
1534 | if (c == '#') { | |
1535 | do { | |
1536 | c = *++s; | |
1537 | } while (!(c == '\n' || (c == 0 && s == bufend))); | |
1538 | } else if (c == '\n') { | |
1539 | s++; | |
1540 | PL_parser->linestart = s; | |
1541 | if (s == bufend) | |
1542 | need_incline = 1; | |
1543 | else | |
1544 | incline(s); | |
1545 | } else if (isSPACE(c)) { | |
1546 | s++; | |
1547 | } else if (c == 0 && s == bufend) { | |
1548 | bool got_more; | |
1549 | #ifdef PERL_MAD | |
1550 | if (PL_madskills) | |
1551 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1552 | #endif /* PERL_MAD */ | |
f0998909 Z |
1553 | if (flags & LEX_NO_NEXT_CHUNK) |
1554 | break; | |
f0e67a1d | 1555 | PL_parser->bufptr = s; |
83944c01 | 1556 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
1557 | got_more = lex_next_chunk(flags); |
1558 | CopLINE_dec(PL_curcop); | |
1559 | s = PL_parser->bufptr; | |
1560 | bufend = PL_parser->bufend; | |
1561 | if (!got_more) | |
1562 | break; | |
1563 | if (need_incline && PL_parser->rsfp) { | |
1564 | incline(s); | |
1565 | need_incline = 0; | |
1566 | } | |
1567 | } else { | |
1568 | break; | |
1569 | } | |
1570 | } | |
1571 | #ifdef PERL_MAD | |
1572 | if (PL_madskills) | |
1573 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1574 | #endif /* PERL_MAD */ | |
1575 | PL_parser->bufptr = s; | |
1576 | } | |
1577 | ||
1578 | /* | |
ffb4593c NT |
1579 | * S_incline |
1580 | * This subroutine has nothing to do with tilting, whether at windmills | |
1581 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 1582 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 1583 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
1584 | * # line 500 "foo.pm" |
1585 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
1586 | */ |
1587 | ||
76e3520e | 1588 | STATIC void |
d9095cec | 1589 | S_incline(pTHX_ const char *s) |
463ee0b2 | 1590 | { |
97aff369 | 1591 | dVAR; |
d9095cec NC |
1592 | const char *t; |
1593 | const char *n; | |
1594 | const char *e; | |
8818d409 | 1595 | line_t line_num; |
463ee0b2 | 1596 | |
7918f24d NC |
1597 | PERL_ARGS_ASSERT_INCLINE; |
1598 | ||
83944c01 | 1599 | COPLINE_INC_WITH_HERELINES; |
451f421f FC |
1600 | if (!PL_rsfp && !PL_parser->filtered && PL_lex_state == LEX_NORMAL |
1601 | && s+1 == PL_bufend && *s == ';') { | |
1602 | /* fake newline in string eval */ | |
1603 | CopLINE_dec(PL_curcop); | |
1604 | return; | |
1605 | } | |
463ee0b2 LW |
1606 | if (*s++ != '#') |
1607 | return; | |
d4c19fe8 AL |
1608 | while (SPACE_OR_TAB(*s)) |
1609 | s++; | |
73659bf1 GS |
1610 | if (strnEQ(s, "line", 4)) |
1611 | s += 4; | |
1612 | else | |
1613 | return; | |
084592ab | 1614 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 1615 | s++; |
4e553d73 | 1616 | else |
73659bf1 | 1617 | return; |
d4c19fe8 AL |
1618 | while (SPACE_OR_TAB(*s)) |
1619 | s++; | |
463ee0b2 LW |
1620 | if (!isDIGIT(*s)) |
1621 | return; | |
d4c19fe8 | 1622 | |
463ee0b2 LW |
1623 | n = s; |
1624 | while (isDIGIT(*s)) | |
1625 | s++; | |
07714eb4 | 1626 | if (!SPACE_OR_TAB(*s) && *s != '\r' && *s != '\n' && *s != '\0') |
26b6dc3f | 1627 | return; |
bf4acbe4 | 1628 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 1629 | s++; |
73659bf1 | 1630 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 1631 | s++; |
73659bf1 GS |
1632 | e = t + 1; |
1633 | } | |
463ee0b2 | 1634 | else { |
c35e046a AL |
1635 | t = s; |
1636 | while (!isSPACE(*t)) | |
1637 | t++; | |
73659bf1 | 1638 | e = t; |
463ee0b2 | 1639 | } |
bf4acbe4 | 1640 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
1641 | e++; |
1642 | if (*e != '\n' && *e != '\0') | |
1643 | return; /* false alarm */ | |
1644 | ||
8818d409 FC |
1645 | line_num = atoi(n)-1; |
1646 | ||
f4dd75d9 | 1647 | if (t - s > 0) { |
d9095cec | 1648 | const STRLEN len = t - s; |
19bad673 NC |
1649 | SV *const temp_sv = CopFILESV(PL_curcop); |
1650 | const char *cf; | |
1651 | STRLEN tmplen; | |
1652 | ||
1653 | if (temp_sv) { | |
1654 | cf = SvPVX(temp_sv); | |
1655 | tmplen = SvCUR(temp_sv); | |
1656 | } else { | |
1657 | cf = NULL; | |
1658 | tmplen = 0; | |
1659 | } | |
1660 | ||
d1299d44 | 1661 | if (!PL_rsfp && !PL_parser->filtered) { |
e66cf94c RGS |
1662 | /* must copy *{"::_<(eval N)[oldfilename:L]"} |
1663 | * to *{"::_<newfilename"} */ | |
44867030 NC |
1664 | /* However, the long form of evals is only turned on by the |
1665 | debugger - usually they're "(eval %lu)" */ | |
1666 | char smallbuf[128]; | |
1667 | char *tmpbuf; | |
1668 | GV **gvp; | |
d9095cec | 1669 | STRLEN tmplen2 = len; |
798b63bc | 1670 | if (tmplen + 2 <= sizeof smallbuf) |
e66cf94c RGS |
1671 | tmpbuf = smallbuf; |
1672 | else | |
2ae0db35 | 1673 | Newx(tmpbuf, tmplen + 2, char); |
44867030 NC |
1674 | tmpbuf[0] = '_'; |
1675 | tmpbuf[1] = '<'; | |
2ae0db35 | 1676 | memcpy(tmpbuf + 2, cf, tmplen); |
44867030 | 1677 | tmplen += 2; |
8a5ee598 RGS |
1678 | gvp = (GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, FALSE); |
1679 | if (gvp) { | |
44867030 NC |
1680 | char *tmpbuf2; |
1681 | GV *gv2; | |
1682 | ||
1683 | if (tmplen2 + 2 <= sizeof smallbuf) | |
1684 | tmpbuf2 = smallbuf; | |
1685 | else | |
1686 | Newx(tmpbuf2, tmplen2 + 2, char); | |
1687 | ||
1688 | if (tmpbuf2 != smallbuf || tmpbuf != smallbuf) { | |
1689 | /* Either they malloc'd it, or we malloc'd it, | |
1690 | so no prefix is present in ours. */ | |
1691 | tmpbuf2[0] = '_'; | |
1692 | tmpbuf2[1] = '<'; | |
1693 | } | |
1694 | ||
1695 | memcpy(tmpbuf2 + 2, s, tmplen2); | |
1696 | tmplen2 += 2; | |
1697 | ||
8a5ee598 | 1698 | gv2 = *(GV**)hv_fetch(PL_defstash, tmpbuf2, tmplen2, TRUE); |
e5527e4b | 1699 | if (!isGV(gv2)) { |
8a5ee598 | 1700 | gv_init(gv2, PL_defstash, tmpbuf2, tmplen2, FALSE); |
e5527e4b RGS |
1701 | /* adjust ${"::_<newfilename"} to store the new file name */ |
1702 | GvSV(gv2) = newSVpvn(tmpbuf2 + 2, tmplen2 - 2); | |
8818d409 FC |
1703 | /* The line number may differ. If that is the case, |
1704 | alias the saved lines that are in the array. | |
1705 | Otherwise alias the whole array. */ | |
1706 | if (CopLINE(PL_curcop) == line_num) { | |
1707 | GvHV(gv2) = MUTABLE_HV(SvREFCNT_inc(GvHV(*gvp))); | |
1708 | GvAV(gv2) = MUTABLE_AV(SvREFCNT_inc(GvAV(*gvp))); | |
1709 | } | |
1710 | else if (GvAV(*gvp)) { | |
1711 | AV * const av = GvAV(*gvp); | |
1712 | const I32 start = CopLINE(PL_curcop)+1; | |
1713 | I32 items = AvFILLp(av) - start; | |
1714 | if (items > 0) { | |
1715 | AV * const av2 = GvAVn(gv2); | |
1716 | SV **svp = AvARRAY(av) + start; | |
1717 | I32 l = (I32)line_num+1; | |
1718 | while (items--) | |
1719 | av_store(av2, l++, SvREFCNT_inc(*svp++)); | |
1720 | } | |
1721 | } | |
e5527e4b | 1722 | } |
44867030 NC |
1723 | |
1724 | if (tmpbuf2 != smallbuf) Safefree(tmpbuf2); | |
8a5ee598 | 1725 | } |
e66cf94c | 1726 | if (tmpbuf != smallbuf) Safefree(tmpbuf); |
e66cf94c | 1727 | } |
05ec9bb3 | 1728 | CopFILE_free(PL_curcop); |
d9095cec | 1729 | CopFILE_setn(PL_curcop, s, len); |
f4dd75d9 | 1730 | } |
8818d409 | 1731 | CopLINE_set(PL_curcop, line_num); |
463ee0b2 LW |
1732 | } |
1733 | ||
29595ff2 | 1734 | #ifdef PERL_MAD |
cd81e915 | 1735 | /* skip space before PL_thistoken */ |
29595ff2 NC |
1736 | |
1737 | STATIC char * | |
5aaab254 | 1738 | S_skipspace0(pTHX_ char *s) |
29595ff2 | 1739 | { |
7918f24d NC |
1740 | PERL_ARGS_ASSERT_SKIPSPACE0; |
1741 | ||
29595ff2 NC |
1742 | s = skipspace(s); |
1743 | if (!PL_madskills) | |
1744 | return s; | |
cd81e915 NC |
1745 | if (PL_skipwhite) { |
1746 | if (!PL_thiswhite) | |
6b29d1f5 | 1747 | PL_thiswhite = newSVpvs(""); |
cd81e915 NC |
1748 | sv_catsv(PL_thiswhite, PL_skipwhite); |
1749 | sv_free(PL_skipwhite); | |
1750 | PL_skipwhite = 0; | |
1751 | } | |
1752 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
29595ff2 NC |
1753 | return s; |
1754 | } | |
1755 | ||
cd81e915 | 1756 | /* skip space after PL_thistoken */ |
29595ff2 NC |
1757 | |
1758 | STATIC char * | |
5aaab254 | 1759 | S_skipspace1(pTHX_ char *s) |
29595ff2 | 1760 | { |
d4c19fe8 | 1761 | const char *start = s; |
29595ff2 NC |
1762 | I32 startoff = start - SvPVX(PL_linestr); |
1763 | ||
7918f24d NC |
1764 | PERL_ARGS_ASSERT_SKIPSPACE1; |
1765 | ||
29595ff2 NC |
1766 | s = skipspace(s); |
1767 | if (!PL_madskills) | |
1768 | return s; | |
1769 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1770 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1771 | const char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1772 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1773 | } | |
1774 | PL_realtokenstart = -1; | |
1775 | if (PL_skipwhite) { | |
1776 | if (!PL_nextwhite) | |
6b29d1f5 | 1777 | PL_nextwhite = newSVpvs(""); |
cd81e915 NC |
1778 | sv_catsv(PL_nextwhite, PL_skipwhite); |
1779 | sv_free(PL_skipwhite); | |
1780 | PL_skipwhite = 0; | |
29595ff2 NC |
1781 | } |
1782 | return s; | |
1783 | } | |
1784 | ||
1785 | STATIC char * | |
5aaab254 | 1786 | S_skipspace2(pTHX_ char *s, SV **svp) |
29595ff2 | 1787 | { |
c35e046a AL |
1788 | char *start; |
1789 | const I32 bufptroff = PL_bufptr - SvPVX(PL_linestr); | |
1790 | const I32 startoff = s - SvPVX(PL_linestr); | |
1791 | ||
7918f24d NC |
1792 | PERL_ARGS_ASSERT_SKIPSPACE2; |
1793 | ||
29595ff2 NC |
1794 | s = skipspace(s); |
1795 | PL_bufptr = SvPVX(PL_linestr) + bufptroff; | |
1796 | if (!PL_madskills || !svp) | |
1797 | return s; | |
1798 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1799 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1800 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1801 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1802 | PL_realtokenstart = -1; | |
29595ff2 | 1803 | } |
cd81e915 | 1804 | if (PL_skipwhite) { |
29595ff2 | 1805 | if (!*svp) |
6b29d1f5 | 1806 | *svp = newSVpvs(""); |
cd81e915 NC |
1807 | sv_setsv(*svp, PL_skipwhite); |
1808 | sv_free(PL_skipwhite); | |
1809 | PL_skipwhite = 0; | |
29595ff2 NC |
1810 | } |
1811 | ||
1812 | return s; | |
1813 | } | |
1814 | #endif | |
1815 | ||
80a702cd | 1816 | STATIC void |
15f169a1 | 1817 | S_update_debugger_info(pTHX_ SV *orig_sv, const char *const buf, STRLEN len) |
80a702cd RGS |
1818 | { |
1819 | AV *av = CopFILEAVx(PL_curcop); | |
1820 | if (av) { | |
b9f83d2f | 1821 | SV * const sv = newSV_type(SVt_PVMG); |
5fa550fb NC |
1822 | if (orig_sv) |
1823 | sv_setsv(sv, orig_sv); | |
1824 | else | |
1825 | sv_setpvn(sv, buf, len); | |
80a702cd RGS |
1826 | (void)SvIOK_on(sv); |
1827 | SvIV_set(sv, 0); | |
1828 | av_store(av, (I32)CopLINE(PL_curcop), sv); | |
1829 | } | |
1830 | } | |
1831 | ||
ffb4593c NT |
1832 | /* |
1833 | * S_skipspace | |
1834 | * Called to gobble the appropriate amount and type of whitespace. | |
1835 | * Skips comments as well. | |
1836 | */ | |
1837 | ||
76e3520e | 1838 | STATIC char * |
5aaab254 | 1839 | S_skipspace(pTHX_ char *s) |
a687059c | 1840 | { |
5db06880 | 1841 | #ifdef PERL_MAD |
f0e67a1d Z |
1842 | char *start = s; |
1843 | #endif /* PERL_MAD */ | |
7918f24d | 1844 | PERL_ARGS_ASSERT_SKIPSPACE; |
f0e67a1d | 1845 | #ifdef PERL_MAD |
cd81e915 NC |
1846 | if (PL_skipwhite) { |
1847 | sv_free(PL_skipwhite); | |
f0e67a1d | 1848 | PL_skipwhite = NULL; |
5db06880 | 1849 | } |
f0e67a1d | 1850 | #endif /* PERL_MAD */ |
3280af22 | 1851 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 1852 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 | 1853 | s++; |
f0e67a1d Z |
1854 | } else { |
1855 | STRLEN bufptr_pos = PL_bufptr - SvPVX(PL_linestr); | |
1856 | PL_bufptr = s; | |
f0998909 Z |
1857 | lex_read_space(LEX_KEEP_PREVIOUS | |
1858 | (PL_sublex_info.sub_inwhat || PL_lex_state == LEX_FORMLINE ? | |
1859 | LEX_NO_NEXT_CHUNK : 0)); | |
3280af22 | 1860 | s = PL_bufptr; |
f0e67a1d Z |
1861 | PL_bufptr = SvPVX(PL_linestr) + bufptr_pos; |
1862 | if (PL_linestart > PL_bufptr) | |
1863 | PL_bufptr = PL_linestart; | |
1864 | return s; | |
463ee0b2 | 1865 | } |
5db06880 | 1866 | #ifdef PERL_MAD |
f0e67a1d Z |
1867 | if (PL_madskills) |
1868 | PL_skipwhite = newSVpvn(start, s-start); | |
1869 | #endif /* PERL_MAD */ | |
5db06880 | 1870 | return s; |
a687059c | 1871 | } |
378cc40b | 1872 | |
ffb4593c NT |
1873 | /* |
1874 | * S_check_uni | |
1875 | * Check the unary operators to ensure there's no ambiguity in how they're | |
1876 | * used. An ambiguous piece of code would be: | |
1877 | * rand + 5 | |
1878 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
1879 | * the +5 is its argument. | |
1880 | */ | |
1881 | ||
76e3520e | 1882 | STATIC void |
cea2e8a9 | 1883 | S_check_uni(pTHX) |
ba106d47 | 1884 | { |
97aff369 | 1885 | dVAR; |
d4c19fe8 AL |
1886 | const char *s; |
1887 | const char *t; | |
2f3197b3 | 1888 | |
3280af22 | 1889 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 1890 | return; |
3280af22 NIS |
1891 | while (isSPACE(*PL_last_uni)) |
1892 | PL_last_uni++; | |
c35e046a | 1893 | s = PL_last_uni; |
8a2bca12 | 1894 | while (isWORDCHAR_lazy_if(s,UTF) || *s == '-') |
c35e046a | 1895 | s++; |
3280af22 | 1896 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 1897 | return; |
6136c704 | 1898 | |
9b387841 NC |
1899 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
1900 | "Warning: Use of \"%.*s\" without parentheses is ambiguous", | |
1901 | (int)(s - PL_last_uni), PL_last_uni); | |
2f3197b3 LW |
1902 | } |
1903 | ||
ffb4593c NT |
1904 | /* |
1905 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
1906 | * with a subroutine, S_lop() for which LOP is just another name. | |
1907 | */ | |
1908 | ||
a0d0e21e LW |
1909 | #define LOP(f,x) return lop(f,x,s) |
1910 | ||
ffb4593c NT |
1911 | /* |
1912 | * S_lop | |
1913 | * Build a list operator (or something that might be one). The rules: | |
1914 | * - if we have a next token, then it's a list operator [why?] | |
1915 | * - if the next thing is an opening paren, then it's a function | |
1916 | * - else it's a list operator | |
1917 | */ | |
1918 | ||
76e3520e | 1919 | STATIC I32 |
a0be28da | 1920 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 1921 | { |
97aff369 | 1922 | dVAR; |
7918f24d NC |
1923 | |
1924 | PERL_ARGS_ASSERT_LOP; | |
1925 | ||
6154021b | 1926 | pl_yylval.ival = f; |
35c8bce7 | 1927 | CLINE; |
3280af22 NIS |
1928 | PL_expect = x; |
1929 | PL_bufptr = s; | |
1930 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 1931 | PL_last_lop_op = (OPCODE)f; |
5db06880 NC |
1932 | #ifdef PERL_MAD |
1933 | if (PL_lasttoke) | |
78cdf107 | 1934 | goto lstop; |
5db06880 | 1935 | #else |
3280af22 | 1936 | if (PL_nexttoke) |
78cdf107 | 1937 | goto lstop; |
5db06880 | 1938 | #endif |
79072805 | 1939 | if (*s == '(') |
bbf60fe6 | 1940 | return REPORT(FUNC); |
29595ff2 | 1941 | s = PEEKSPACE(s); |
79072805 | 1942 | if (*s == '(') |
bbf60fe6 | 1943 | return REPORT(FUNC); |
78cdf107 Z |
1944 | else { |
1945 | lstop: | |
1946 | if (!PL_lex_allbrackets && PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
1947 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 1948 | return REPORT(LSTOP); |
78cdf107 | 1949 | } |
79072805 LW |
1950 | } |
1951 | ||
5db06880 NC |
1952 | #ifdef PERL_MAD |
1953 | /* | |
1954 | * S_start_force | |
1955 | * Sets up for an eventual force_next(). start_force(0) basically does | |
1956 | * an unshift, while start_force(-1) does a push. yylex removes items | |
1957 | * on the "pop" end. | |
1958 | */ | |
1959 | ||
1960 | STATIC void | |
1961 | S_start_force(pTHX_ int where) | |
1962 | { | |
1963 | int i; | |
1964 | ||
cd81e915 | 1965 | if (where < 0) /* so people can duplicate start_force(PL_curforce) */ |
5db06880 | 1966 | where = PL_lasttoke; |
cd81e915 NC |
1967 | assert(PL_curforce < 0 || PL_curforce == where); |
1968 | if (PL_curforce != where) { | |
5db06880 NC |
1969 | for (i = PL_lasttoke; i > where; --i) { |
1970 | PL_nexttoke[i] = PL_nexttoke[i-1]; | |
1971 | } | |
1972 | PL_lasttoke++; | |
1973 | } | |
cd81e915 | 1974 | if (PL_curforce < 0) /* in case of duplicate start_force() */ |
5db06880 | 1975 | Zero(&PL_nexttoke[where], 1, NEXTTOKE); |
cd81e915 NC |
1976 | PL_curforce = where; |
1977 | if (PL_nextwhite) { | |
5db06880 | 1978 | if (PL_madskills) |
6b29d1f5 | 1979 | curmad('^', newSVpvs("")); |
cd81e915 | 1980 | CURMAD('_', PL_nextwhite); |
5db06880 NC |
1981 | } |
1982 | } | |
1983 | ||
1984 | STATIC void | |
1985 | S_curmad(pTHX_ char slot, SV *sv) | |
1986 | { | |
1987 | MADPROP **where; | |
1988 | ||
1989 | if (!sv) | |
1990 | return; | |
cd81e915 NC |
1991 | if (PL_curforce < 0) |
1992 | where = &PL_thismad; | |
5db06880 | 1993 | else |
cd81e915 | 1994 | where = &PL_nexttoke[PL_curforce].next_mad; |
5db06880 | 1995 | |
cd81e915 | 1996 | if (PL_faketokens) |
76f68e9b | 1997 | sv_setpvs(sv, ""); |
5db06880 NC |
1998 | else { |
1999 | if (!IN_BYTES) { | |
2000 | if (UTF && is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
2001 | SvUTF8_on(sv); | |
2002 | else if (PL_encoding) { | |
2003 | sv_recode_to_utf8(sv, PL_encoding); | |
2004 | } | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | /* keep a slot open for the head of the list? */ | |
2009 | if (slot != '_' && *where && (*where)->mad_key == '^') { | |
2010 | (*where)->mad_key = slot; | |
daba3364 | 2011 | sv_free(MUTABLE_SV(((*where)->mad_val))); |
5db06880 NC |
2012 | (*where)->mad_val = (void*)sv; |
2013 | } | |
2014 | else | |
2015 | addmad(newMADsv(slot, sv), where, 0); | |
2016 | } | |
2017 | #else | |
b3f24c00 MHM |
2018 | # define start_force(where) NOOP |
2019 | # define curmad(slot, sv) NOOP | |
5db06880 NC |
2020 | #endif |
2021 | ||
ffb4593c NT |
2022 | /* |
2023 | * S_force_next | |
9cbb5ea2 | 2024 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 2025 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 | 2026 | * to know what token to return the next time the lexer is called. Caller |
5db06880 NC |
2027 | * will need to set PL_nextval[] (or PL_nexttoke[].next_val with PERL_MAD), |
2028 | * and possibly PL_expect to ensure the lexer handles the token correctly. | |
ffb4593c NT |
2029 | */ |
2030 | ||
4e553d73 | 2031 | STATIC void |
cea2e8a9 | 2032 | S_force_next(pTHX_ I32 type) |
79072805 | 2033 | { |
97aff369 | 2034 | dVAR; |
704d4215 GG |
2035 | #ifdef DEBUGGING |
2036 | if (DEBUG_T_TEST) { | |
2037 | PerlIO_printf(Perl_debug_log, "### forced token:\n"); | |
f05d7009 | 2038 | tokereport(type, &NEXTVAL_NEXTTOKE); |
704d4215 GG |
2039 | } |
2040 | #endif | |
5db06880 | 2041 | #ifdef PERL_MAD |
cd81e915 | 2042 | if (PL_curforce < 0) |
5db06880 | 2043 | start_force(PL_lasttoke); |
cd81e915 | 2044 | PL_nexttoke[PL_curforce].next_type = type; |
5db06880 NC |
2045 | if (PL_lex_state != LEX_KNOWNEXT) |
2046 | PL_lex_defer = PL_lex_state; | |
2047 | PL_lex_state = LEX_KNOWNEXT; | |
2048 | PL_lex_expect = PL_expect; | |
cd81e915 | 2049 | PL_curforce = -1; |
5db06880 | 2050 | #else |
3280af22 NIS |
2051 | PL_nexttype[PL_nexttoke] = type; |
2052 | PL_nexttoke++; | |
2053 | if (PL_lex_state != LEX_KNOWNEXT) { | |
2054 | PL_lex_defer = PL_lex_state; | |
2055 | PL_lex_expect = PL_expect; | |
2056 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 | 2057 | } |
5db06880 | 2058 | #endif |
79072805 LW |
2059 | } |
2060 | ||
28ac2b49 Z |
2061 | void |
2062 | Perl_yyunlex(pTHX) | |
2063 | { | |
a7aaec61 Z |
2064 | int yyc = PL_parser->yychar; |
2065 | if (yyc != YYEMPTY) { | |
2066 | if (yyc) { | |
2067 | start_force(-1); | |
2068 | NEXTVAL_NEXTTOKE = PL_parser->yylval; | |
2069 | if (yyc == '{'/*}*/ || yyc == HASHBRACK || yyc == '['/*]*/) { | |
78cdf107 | 2070 | PL_lex_allbrackets--; |
a7aaec61 | 2071 | PL_lex_brackets--; |
78cdf107 Z |
2072 | yyc |= (3<<24) | (PL_lex_brackstack[PL_lex_brackets] << 16); |
2073 | } else if (yyc == '('/*)*/) { | |
2074 | PL_lex_allbrackets--; | |
2075 | yyc |= (2<<24); | |
a7aaec61 Z |
2076 | } |
2077 | force_next(yyc); | |
2078 | } | |
28ac2b49 Z |
2079 | PL_parser->yychar = YYEMPTY; |
2080 | } | |
2081 | } | |
2082 | ||
d0a148a6 | 2083 | STATIC SV * |
15f169a1 | 2084 | S_newSV_maybe_utf8(pTHX_ const char *const start, STRLEN len) |
d0a148a6 | 2085 | { |
97aff369 | 2086 | dVAR; |
740cce10 | 2087 | SV * const sv = newSVpvn_utf8(start, len, |
eaf7a4d2 CS |
2088 | !IN_BYTES |
2089 | && UTF | |
2090 | && !is_ascii_string((const U8*)start, len) | |
740cce10 | 2091 | && is_utf8_string((const U8*)start, len)); |
d0a148a6 NC |
2092 | return sv; |
2093 | } | |
2094 | ||
ffb4593c NT |
2095 | /* |
2096 | * S_force_word | |
2097 | * When the lexer knows the next thing is a word (for instance, it has | |
2098 | * just seen -> and it knows that the next char is a word char, then | |
02b34bbe DM |
2099 | * it calls S_force_word to stick the next word into the PL_nexttoke/val |
2100 | * lookahead. | |
ffb4593c NT |
2101 | * |
2102 | * Arguments: | |
b1b65b59 | 2103 | * char *start : buffer position (must be within PL_linestr) |
02b34bbe | 2104 | * int token : PL_next* will be this type of bare word (e.g., METHOD,WORD) |
ffb4593c NT |
2105 | * int check_keyword : if true, Perl checks to make sure the word isn't |
2106 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
2107 | * int allow_pack : if true, : characters will also be allowed (require, | |
2108 | * use, etc. do this) | |
9cbb5ea2 | 2109 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
2110 | */ |
2111 | ||
76e3520e | 2112 | STATIC char * |
5aaab254 | 2113 | S_force_word(pTHX_ char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 2114 | { |
97aff369 | 2115 | dVAR; |
eb578fdb | 2116 | char *s; |
463ee0b2 | 2117 | STRLEN len; |
4e553d73 | 2118 | |
7918f24d NC |
2119 | PERL_ARGS_ASSERT_FORCE_WORD; |
2120 | ||
29595ff2 | 2121 | start = SKIPSPACE1(start); |
463ee0b2 | 2122 | s = start; |
7e2040f0 | 2123 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 2124 | (allow_pack && *s == ':') || |
15f0808c | 2125 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 2126 | { |
3280af22 | 2127 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
5458a98a | 2128 | if (check_keyword && keyword(PL_tokenbuf, len, 0)) |
463ee0b2 | 2129 | return start; |
cd81e915 | 2130 | start_force(PL_curforce); |
5db06880 NC |
2131 | if (PL_madskills) |
2132 | curmad('X', newSVpvn(start,s-start)); | |
463ee0b2 | 2133 | if (token == METHOD) { |
29595ff2 | 2134 | s = SKIPSPACE1(s); |
463ee0b2 | 2135 | if (*s == '(') |
3280af22 | 2136 | PL_expect = XTERM; |
463ee0b2 | 2137 | else { |
3280af22 | 2138 | PL_expect = XOPERATOR; |
463ee0b2 | 2139 | } |
79072805 | 2140 | } |
e74e6b3d | 2141 | if (PL_madskills) |
63575281 | 2142 | curmad('g', newSVpvs( "forced" )); |
9ded7720 | 2143 | NEXTVAL_NEXTTOKE.opval |
d0a148a6 NC |
2144 | = (OP*)newSVOP(OP_CONST,0, |
2145 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
9ded7720 | 2146 | NEXTVAL_NEXTTOKE.opval->op_private |= OPpCONST_BARE; |
79072805 LW |
2147 | force_next(token); |
2148 | } | |
2149 | return s; | |
2150 | } | |
2151 | ||
ffb4593c NT |
2152 | /* |
2153 | * S_force_ident | |
9cbb5ea2 | 2154 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
2155 | * text only contains the "foo" portion. The first argument is a pointer |
2156 | * to the "foo", and the second argument is the type symbol to prefix. | |
2157 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 2158 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
2159 | */ |
2160 | ||
76e3520e | 2161 | STATIC void |
5aaab254 | 2162 | S_force_ident(pTHX_ const char *s, int kind) |
79072805 | 2163 | { |
97aff369 | 2164 | dVAR; |
7918f24d NC |
2165 | |
2166 | PERL_ARGS_ASSERT_FORCE_IDENT; | |
2167 | ||
c9b48522 DD |
2168 | if (s[0]) { |
2169 | const STRLEN len = s[1] ? strlen(s) : 1; /* s = "\"" see yylex */ | |
728847b1 BF |
2170 | OP* const o = (OP*)newSVOP(OP_CONST, 0, newSVpvn_flags(s, len, |
2171 | UTF ? SVf_UTF8 : 0)); | |
cd81e915 | 2172 | start_force(PL_curforce); |
9ded7720 | 2173 | NEXTVAL_NEXTTOKE.opval = o; |
79072805 | 2174 | force_next(WORD); |
748a9306 | 2175 | if (kind) { |
11343788 | 2176 | o->op_private = OPpCONST_ENTERED; |
55497cff | 2177 | /* XXX see note in pp_entereval() for why we forgo typo |
2178 | warnings if the symbol must be introduced in an eval. | |
2179 | GSAR 96-10-12 */ | |
90e5519e | 2180 | gv_fetchpvn_flags(s, len, |
728847b1 BF |
2181 | (PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) |
2182 | : GV_ADD) | ( UTF ? SVf_UTF8 : 0 ), | |
90e5519e NC |
2183 | kind == '$' ? SVt_PV : |
2184 | kind == '@' ? SVt_PVAV : | |
2185 | kind == '%' ? SVt_PVHV : | |
a0d0e21e | 2186 | SVt_PVGV |
90e5519e | 2187 | ); |
748a9306 | 2188 | } |
79072805 LW |
2189 | } |
2190 | } | |
2191 | ||
3f33d153 FC |
2192 | static void |
2193 | S_force_ident_maybe_lex(pTHX_ char pit) | |
2194 | { | |
2195 | start_force(PL_curforce); | |
2196 | NEXTVAL_NEXTTOKE.ival = pit; | |
2197 | force_next('p'); | |
2198 | } | |
2199 | ||
1571675a GS |
2200 | NV |
2201 | Perl_str_to_version(pTHX_ SV *sv) | |
2202 | { | |
2203 | NV retval = 0.0; | |
2204 | NV nshift = 1.0; | |
2205 | STRLEN len; | |
cfd0369c | 2206 | const char *start = SvPV_const(sv,len); |
9d4ba2ae | 2207 | const char * const end = start + len; |
504618e9 | 2208 | const bool utf = SvUTF8(sv) ? TRUE : FALSE; |
7918f24d NC |
2209 | |
2210 | PERL_ARGS_ASSERT_STR_TO_VERSION; | |
2211 | ||
1571675a | 2212 | while (start < end) { |
ba210ebe | 2213 | STRLEN skip; |
1571675a GS |
2214 | UV n; |
2215 | if (utf) | |
9041c2e3 | 2216 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
2217 | else { |
2218 | n = *(U8*)start; | |
2219 | skip = 1; | |
2220 | } | |
2221 | retval += ((NV)n)/nshift; | |
2222 | start += skip; | |
2223 | nshift *= 1000; | |
2224 | } | |
2225 | return retval; | |
2226 | } | |
2227 | ||
4e553d73 | 2228 | /* |
ffb4593c NT |
2229 | * S_force_version |
2230 | * Forces the next token to be a version number. | |
e759cc13 RGS |
2231 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
2232 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
2233 | * must use an alternative parsing method). | |
ffb4593c NT |
2234 | */ |
2235 | ||
76e3520e | 2236 | STATIC char * |
e759cc13 | 2237 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 2238 | { |
97aff369 | 2239 | dVAR; |
5f66b61c | 2240 | OP *version = NULL; |
44dcb63b | 2241 | char *d; |
5db06880 NC |
2242 | #ifdef PERL_MAD |
2243 | I32 startoff = s - SvPVX(PL_linestr); | |
2244 | #endif | |
89bfa8cd | 2245 | |
7918f24d NC |
2246 | PERL_ARGS_ASSERT_FORCE_VERSION; |
2247 | ||
29595ff2 | 2248 | s = SKIPSPACE1(s); |
89bfa8cd | 2249 | |
44dcb63b | 2250 | d = s; |
dd629d5b | 2251 | if (*d == 'v') |
44dcb63b | 2252 | d++; |
44dcb63b | 2253 | if (isDIGIT(*d)) { |
e759cc13 RGS |
2254 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
2255 | d++; | |
5db06880 NC |
2256 | #ifdef PERL_MAD |
2257 | if (PL_madskills) { | |
cd81e915 | 2258 | start_force(PL_curforce); |
5db06880 NC |
2259 | curmad('X', newSVpvn(s,d-s)); |
2260 | } | |
2261 | #endif | |
4e4da3ac | 2262 | if (*d == ';' || isSPACE(*d) || *d == '{' || *d == '}' || !*d) { |
dd629d5b | 2263 | SV *ver; |
8d08d9ba | 2264 | #ifdef USE_LOCALE_NUMERIC |
909d3787 KW |
2265 | char *loc = savepv(setlocale(LC_NUMERIC, NULL)); |
2266 | setlocale(LC_NUMERIC, "C"); | |
8d08d9ba | 2267 | #endif |
6154021b | 2268 | s = scan_num(s, &pl_yylval); |
8d08d9ba DG |
2269 | #ifdef USE_LOCALE_NUMERIC |
2270 | setlocale(LC_NUMERIC, loc); | |
909d3787 | 2271 | Safefree(loc); |
8d08d9ba | 2272 | #endif |
6154021b | 2273 | version = pl_yylval.opval; |
dd629d5b GS |
2274 | ver = cSVOPx(version)->op_sv; |
2275 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
862a34c6 | 2276 | SvUPGRADE(ver, SVt_PVNV); |
9d6ce603 | 2277 | SvNV_set(ver, str_to_version(ver)); |
1571675a | 2278 | SvNOK_on(ver); /* hint that it is a version */ |
44dcb63b | 2279 | } |
89bfa8cd | 2280 | } |
5db06880 NC |
2281 | else if (guessing) { |
2282 | #ifdef PERL_MAD | |
2283 | if (PL_madskills) { | |
cd81e915 NC |
2284 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2285 | PL_nextwhite = 0; | |
5db06880 NC |
2286 | s = SvPVX(PL_linestr) + startoff; |
2287 | } | |
2288 | #endif | |
e759cc13 | 2289 | return s; |
5db06880 | 2290 | } |
89bfa8cd | 2291 | } |
2292 | ||
5db06880 NC |
2293 | #ifdef PERL_MAD |
2294 | if (PL_madskills && !version) { | |
cd81e915 NC |
2295 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2296 | PL_nextwhite = 0; | |
5db06880 NC |
2297 | s = SvPVX(PL_linestr) + startoff; |
2298 | } | |
2299 | #endif | |
89bfa8cd | 2300 | /* NOTE: The parser sees the package name and the VERSION swapped */ |
cd81e915 | 2301 | start_force(PL_curforce); |
9ded7720 | 2302 | NEXTVAL_NEXTTOKE.opval = version; |
4e553d73 | 2303 | force_next(WORD); |
89bfa8cd | 2304 | |
e759cc13 | 2305 | return s; |
89bfa8cd | 2306 | } |
2307 | ||
ffb4593c | 2308 | /* |
91152fc1 DG |
2309 | * S_force_strict_version |
2310 | * Forces the next token to be a version number using strict syntax rules. | |
2311 | */ | |
2312 | ||
2313 | STATIC char * | |
2314 | S_force_strict_version(pTHX_ char *s) | |
2315 | { | |
2316 | dVAR; | |
2317 | OP *version = NULL; | |
2318 | #ifdef PERL_MAD | |
2319 | I32 startoff = s - SvPVX(PL_linestr); | |
2320 | #endif | |
2321 | const char *errstr = NULL; | |
2322 | ||
2323 | PERL_ARGS_ASSERT_FORCE_STRICT_VERSION; | |
2324 | ||
2325 | while (isSPACE(*s)) /* leading whitespace */ | |
2326 | s++; | |
2327 | ||
2328 | if (is_STRICT_VERSION(s,&errstr)) { | |
2329 | SV *ver = newSV(0); | |
2330 | s = (char *)scan_version(s, ver, 0); | |
2331 | version = newSVOP(OP_CONST, 0, ver); | |
2332 | } | |
4e4da3ac Z |
2333 | else if ( (*s != ';' && *s != '{' && *s != '}' ) && |
2334 | (s = SKIPSPACE1(s), (*s != ';' && *s != '{' && *s != '}' ))) | |
2335 | { | |
91152fc1 DG |
2336 | PL_bufptr = s; |
2337 | if (errstr) | |
2338 | yyerror(errstr); /* version required */ | |
2339 | return s; | |
2340 | } | |
2341 | ||
2342 | #ifdef PERL_MAD | |
2343 | if (PL_madskills && !version) { | |
2344 | sv_free(PL_nextwhite); /* let next token collect whitespace */ | |
2345 | PL_nextwhite = 0; | |
2346 | s = SvPVX(PL_linestr) + startoff; | |
2347 | } | |
2348 | #endif | |
2349 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
2350 | start_force(PL_curforce); | |
2351 | NEXTVAL_NEXTTOKE.opval = version; | |
2352 | force_next(WORD); | |
2353 | ||
2354 | return s; | |
2355 | } | |
2356 | ||
2357 | /* | |
ffb4593c NT |
2358 | * S_tokeq |
2359 | * Tokenize a quoted string passed in as an SV. It finds the next | |
2360 | * chunk, up to end of string or a backslash. It may make a new | |
2361 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
2362 | * turns \\ into \. | |
2363 | */ | |
2364 | ||
76e3520e | 2365 | STATIC SV * |
cea2e8a9 | 2366 | S_tokeq(pTHX_ SV *sv) |
79072805 | 2367 | { |
97aff369 | 2368 | dVAR; |
eb578fdb KW |
2369 | char *s; |
2370 | char *send; | |
2371 | char *d; | |
b3ac6de7 IZ |
2372 | STRLEN len = 0; |
2373 | SV *pv = sv; | |
79072805 | 2374 | |
7918f24d NC |
2375 | PERL_ARGS_ASSERT_TOKEQ; |
2376 | ||
79072805 | 2377 | if (!SvLEN(sv)) |
b3ac6de7 | 2378 | goto finish; |
79072805 | 2379 | |
a0d0e21e | 2380 | s = SvPV_force(sv, len); |
21a311ee | 2381 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 2382 | goto finish; |
463ee0b2 | 2383 | send = s + len; |
dcb21ed6 NC |
2384 | /* This is relying on the SV being "well formed" with a trailing '\0' */ |
2385 | while (s < send && !(*s == '\\' && s[1] == '\\')) | |
79072805 LW |
2386 | s++; |
2387 | if (s == send) | |
b3ac6de7 | 2388 | goto finish; |
79072805 | 2389 | d = s; |
be4731d2 | 2390 | if ( PL_hints & HINT_NEW_STRING ) { |
59cd0e26 | 2391 | pv = newSVpvn_flags(SvPVX_const(pv), len, SVs_TEMP | SvUTF8(sv)); |
be4731d2 | 2392 | } |
79072805 LW |
2393 | while (s < send) { |
2394 | if (*s == '\\') { | |
a0d0e21e | 2395 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
2396 | s++; /* all that, just for this */ |
2397 | } | |
2398 | *d++ = *s++; | |
2399 | } | |
2400 | *d = '\0'; | |
95a20fc0 | 2401 | SvCUR_set(sv, d - SvPVX_const(sv)); |
b3ac6de7 | 2402 | finish: |
3280af22 | 2403 | if ( PL_hints & HINT_NEW_STRING ) |
eb0d8d16 | 2404 | return new_constant(NULL, 0, "q", sv, pv, "q", 1); |
79072805 LW |
2405 | return sv; |
2406 | } | |
2407 | ||
ffb4593c NT |
2408 | /* |
2409 | * Now come three functions related to double-quote context, | |
2410 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
2411 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
2412 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
2413 | * to handle functions and concatenation. | |
ecd24171 DM |
2414 | * For example, |
2415 | * "foo\lbar" | |
2416 | * is tokenised as | |
2417 | * stringify ( const[foo] concat lcfirst ( const[bar] ) ) | |
ffb4593c NT |
2418 | */ |
2419 | ||
2420 | /* | |
2421 | * S_sublex_start | |
6154021b | 2422 | * Assumes that pl_yylval.ival is the op we're creating (e.g. OP_LCFIRST). |
ffb4593c NT |
2423 | * |
2424 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
6154021b | 2425 | * make (we return THING if pl_yylval.ival is OP_NULL, PMFUNC otherwise). |
ffb4593c NT |
2426 | * |
2427 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
2428 | * | |
2429 | * Everything else becomes a FUNC. | |
2430 | * | |
2431 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
2432 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
2433 | * call to S_sublex_push(). | |
2434 | */ | |
2435 | ||
76e3520e | 2436 | STATIC I32 |
cea2e8a9 | 2437 | S_sublex_start(pTHX) |
79072805 | 2438 | { |
97aff369 | 2439 | dVAR; |
eb578fdb | 2440 | const I32 op_type = pl_yylval.ival; |
79072805 LW |
2441 | |
2442 | if (op_type == OP_NULL) { | |
6154021b | 2443 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2444 | PL_lex_op = NULL; |
79072805 LW |
2445 | return THING; |
2446 | } | |
2447 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 2448 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
2449 | |
2450 | if (SvTYPE(sv) == SVt_PVIV) { | |
2451 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
2452 | STRLEN len; | |
96a5add6 | 2453 | const char * const p = SvPV_const(sv, len); |
740cce10 | 2454 | SV * const nsv = newSVpvn_flags(p, len, SvUTF8(sv)); |
b3ac6de7 IZ |
2455 | SvREFCNT_dec(sv); |
2456 | sv = nsv; | |
4e553d73 | 2457 | } |
6154021b | 2458 | pl_yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
a0714e2c | 2459 | PL_lex_stuff = NULL; |
6f33ba73 RGS |
2460 | /* Allow <FH> // "foo" */ |
2461 | if (op_type == OP_READLINE) | |
2462 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
2463 | return THING; |
2464 | } | |
e3f73d4e RGS |
2465 | else if (op_type == OP_BACKTICK && PL_lex_op) { |
2466 | /* readpipe() vas overriden */ | |
2467 | cSVOPx(cLISTOPx(cUNOPx(PL_lex_op)->op_first)->op_first->op_sibling)->op_sv = tokeq(PL_lex_stuff); | |
6154021b | 2468 | pl_yylval.opval = PL_lex_op; |
9b201d7d | 2469 | PL_lex_op = NULL; |
e3f73d4e RGS |
2470 | PL_lex_stuff = NULL; |
2471 | return THING; | |
2472 | } | |
79072805 | 2473 | |
3280af22 | 2474 | PL_sublex_info.super_state = PL_lex_state; |
eac04b2e | 2475 | PL_sublex_info.sub_inwhat = (U16)op_type; |
3280af22 NIS |
2476 | PL_sublex_info.sub_op = PL_lex_op; |
2477 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 2478 | |
3280af22 NIS |
2479 | PL_expect = XTERM; |
2480 | if (PL_lex_op) { | |
6154021b | 2481 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2482 | PL_lex_op = NULL; |
55497cff | 2483 | return PMFUNC; |
2484 | } | |
2485 | else | |
2486 | return FUNC; | |
2487 | } | |
2488 | ||
ffb4593c NT |
2489 | /* |
2490 | * S_sublex_push | |
2491 | * Create a new scope to save the lexing state. The scope will be | |
2492 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
2493 | * to the uc, lc, etc. found before. | |
2494 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
2495 | */ | |
2496 | ||
76e3520e | 2497 | STATIC I32 |
cea2e8a9 | 2498 | S_sublex_push(pTHX) |
55497cff | 2499 | { |
27da23d5 | 2500 | dVAR; |
78a635de | 2501 | LEXSHARED *shared; |
f46d017c | 2502 | ENTER; |
55497cff | 2503 | |
3280af22 | 2504 | PL_lex_state = PL_sublex_info.super_state; |
651b5b28 | 2505 | SAVEBOOL(PL_lex_dojoin); |
3280af22 | 2506 | SAVEI32(PL_lex_brackets); |
78cdf107 | 2507 | SAVEI32(PL_lex_allbrackets); |
b27dce25 | 2508 | SAVEI32(PL_lex_formbrack); |
78cdf107 | 2509 | SAVEI8(PL_lex_fakeeof); |
3280af22 NIS |
2510 | SAVEI32(PL_lex_casemods); |
2511 | SAVEI32(PL_lex_starts); | |
651b5b28 | 2512 | SAVEI8(PL_lex_state); |
7cc34111 | 2513 | SAVESPTR(PL_lex_repl); |
7766f137 | 2514 | SAVEVPTR(PL_lex_inpat); |
98246f1e | 2515 | SAVEI16(PL_lex_inwhat); |
57843af0 | 2516 | SAVECOPLINE(PL_curcop); |
3280af22 | 2517 | SAVEPPTR(PL_bufptr); |
8452ff4b | 2518 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
2519 | SAVEPPTR(PL_oldbufptr); |
2520 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
2521 | SAVEPPTR(PL_last_lop); |
2522 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
2523 | SAVEPPTR(PL_linestart); |
2524 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
2525 | SAVEGENERICPV(PL_lex_brackstack); |
2526 | SAVEGENERICPV(PL_lex_casestack); | |
78a635de | 2527 | SAVEGENERICPV(PL_parser->lex_shared); |
3280af22 | 2528 | |
99bd9d90 | 2529 | /* The here-doc parser needs to be able to peek into outer lexing |
60f40a38 FC |
2530 | scopes to find the body of the here-doc. So we put PL_linestr and |
2531 | PL_bufptr into lex_shared, to ‘share’ those values. | |
99bd9d90 | 2532 | */ |
60f40a38 FC |
2533 | PL_parser->lex_shared->ls_linestr = PL_linestr; |
2534 | PL_parser->lex_shared->ls_bufptr = PL_bufptr; | |
99bd9d90 | 2535 | |
3280af22 | 2536 | PL_linestr = PL_lex_stuff; |
7cc34111 | 2537 | PL_lex_repl = PL_sublex_info.repl; |
a0714e2c | 2538 | PL_lex_stuff = NULL; |
7cc34111 | 2539 | PL_sublex_info.repl = NULL; |
3280af22 | 2540 | |
9cbb5ea2 GS |
2541 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
2542 | = SvPVX(PL_linestr); | |
3280af22 | 2543 | PL_bufend += SvCUR(PL_linestr); |
bd61b366 | 2544 | PL_last_lop = PL_last_uni = NULL; |
3280af22 | 2545 | SAVEFREESV(PL_linestr); |
4dc843bc | 2546 | if (PL_lex_repl) SAVEFREESV(PL_lex_repl); |
3280af22 NIS |
2547 | |
2548 | PL_lex_dojoin = FALSE; | |
b27dce25 | 2549 | PL_lex_brackets = PL_lex_formbrack = 0; |
78cdf107 Z |
2550 | PL_lex_allbrackets = 0; |
2551 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
a02a5408 JC |
2552 | Newx(PL_lex_brackstack, 120, char); |
2553 | Newx(PL_lex_casestack, 12, char); | |
3280af22 NIS |
2554 | PL_lex_casemods = 0; |
2555 | *PL_lex_casestack = '\0'; | |
2556 | PL_lex_starts = 0; | |
2557 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 2558 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
78a635de FC |
2559 | |
2560 | Newxz(shared, 1, LEXSHARED); | |
2561 | shared->ls_prev = PL_parser->lex_shared; | |
2562 | PL_parser->lex_shared = shared; | |
3280af22 NIS |
2563 | |
2564 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
bb16bae8 | 2565 | if (PL_lex_inwhat == OP_TRANSR) PL_lex_inwhat = OP_TRANS; |
3280af22 NIS |
2566 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) |
2567 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 2568 | else |
5f66b61c | 2569 | PL_lex_inpat = NULL; |
79072805 | 2570 | |
55497cff | 2571 | return '('; |
79072805 LW |
2572 | } |
2573 | ||
ffb4593c NT |
2574 | /* |
2575 | * S_sublex_done | |
2576 | * Restores lexer state after a S_sublex_push. | |
2577 | */ | |
2578 | ||
76e3520e | 2579 | STATIC I32 |
cea2e8a9 | 2580 | S_sublex_done(pTHX) |
79072805 | 2581 | { |
27da23d5 | 2582 | dVAR; |
3280af22 | 2583 | if (!PL_lex_starts++) { |
396482e1 | 2584 | SV * const sv = newSVpvs(""); |
9aa983d2 JH |
2585 | if (SvUTF8(PL_linestr)) |
2586 | SvUTF8_on(sv); | |
3280af22 | 2587 | PL_expect = XOPERATOR; |
6154021b | 2588 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
2589 | return THING; |
2590 | } | |
2591 | ||
3280af22 NIS |
2592 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
2593 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 2594 | return yylex(); |
79072805 LW |
2595 | } |
2596 | ||
ffb4593c | 2597 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
bb16bae8 | 2598 | assert(PL_lex_inwhat != OP_TRANSR); |
3280af22 NIS |
2599 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
2600 | PL_linestr = PL_lex_repl; | |
2601 | PL_lex_inpat = 0; | |
2602 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
2603 | PL_bufend += SvCUR(PL_linestr); | |
bd61b366 | 2604 | PL_last_lop = PL_last_uni = NULL; |
3280af22 NIS |
2605 | PL_lex_dojoin = FALSE; |
2606 | PL_lex_brackets = 0; | |
78cdf107 Z |
2607 | PL_lex_allbrackets = 0; |
2608 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
3280af22 NIS |
2609 | PL_lex_casemods = 0; |
2610 | *PL_lex_casestack = '\0'; | |
2611 | PL_lex_starts = 0; | |
25da4f38 | 2612 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
2613 | PL_lex_state = LEX_INTERPNORMAL; |
2614 | PL_lex_starts++; | |
e9fa98b2 HS |
2615 | /* we don't clear PL_lex_repl here, so that we can check later |
2616 | whether this is an evalled subst; that means we rely on the | |
2617 | logic to ensure sublex_done() is called again only via the | |
2618 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 2619 | } |
e9fa98b2 | 2620 | else { |
3280af22 | 2621 | PL_lex_state = LEX_INTERPCONCAT; |
a0714e2c | 2622 | PL_lex_repl = NULL; |
e9fa98b2 | 2623 | } |
79072805 | 2624 | return ','; |
ffed7fef LW |
2625 | } |
2626 | else { | |
5db06880 NC |
2627 | #ifdef PERL_MAD |
2628 | if (PL_madskills) { | |
cd81e915 NC |
2629 | if (PL_thiswhite) { |
2630 | if (!PL_endwhite) | |
6b29d1f5 | 2631 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
2632 | sv_catsv(PL_endwhite, PL_thiswhite); |
2633 | PL_thiswhite = 0; | |
2634 | } | |
2635 | if (PL_thistoken) | |
76f68e9b | 2636 | sv_setpvs(PL_thistoken,""); |
5db06880 | 2637 | else |
cd81e915 | 2638 | PL_realtokenstart = -1; |
5db06880 NC |
2639 | } |
2640 | #endif | |
f46d017c | 2641 | LEAVE; |
3280af22 NIS |
2642 | PL_bufend = SvPVX(PL_linestr); |
2643 | PL_bufend += SvCUR(PL_linestr); | |
2644 | PL_expect = XOPERATOR; | |
09bef843 | 2645 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 2646 | return ')'; |
ffed7fef LW |
2647 | } |
2648 | } | |
2649 | ||
6f613c73 KW |
2650 | PERL_STATIC_INLINE SV* |
2651 | S_get_and_check_backslash_N_name(pTHX_ const char* s, const char* const e) | |
2652 | { | |
140b12ad KW |
2653 | /* <s> points to first character of interior of \N{}, <e> to one beyond the |
2654 | * interior, hence to the "}". Finds what the name resolves to, returning | |
2655 | * an SV* containing it; NULL if no valid one found */ | |
2656 | ||
dd2b1b72 | 2657 | SV* res = newSVpvn_flags(s, e - s, UTF ? SVf_UTF8 : 0); |
6f613c73 | 2658 | |
0c415a79 KW |
2659 | HV * table; |
2660 | SV **cvp; | |
2661 | SV *cv; | |
2662 | SV *rv; | |
2663 | HV *stash; | |
2664 | const U8* first_bad_char_loc; | |
2665 | const char* backslash_ptr = s - 3; /* Points to the <\> of \N{... */ | |
2666 | ||
6f613c73 KW |
2667 | PERL_ARGS_ASSERT_GET_AND_CHECK_BACKSLASH_N_NAME; |
2668 | ||
107160e2 KW |
2669 | if (UTF && ! is_utf8_string_loc((U8 *) backslash_ptr, |
2670 | e - backslash_ptr, | |
2671 | &first_bad_char_loc)) | |
2672 | { | |
2673 | /* If warnings are on, this will print a more detailed analysis of what | |
2674 | * is wrong than the error message below */ | |
2675 | utf8n_to_uvuni(first_bad_char_loc, | |
2676 | e - ((char *) first_bad_char_loc), | |
2677 | NULL, 0); | |
2678 | ||
2679 | /* We deliberately don't try to print the malformed character, which | |
2680 | * might not print very well; it also may be just the first of many | |
2681 | * malformations, so don't print what comes after it */ | |
2682 | yyerror(Perl_form(aTHX_ | |
2683 | "Malformed UTF-8 character immediately after '%.*s'", | |
2684 | (int) (first_bad_char_loc - (U8 *) backslash_ptr), backslash_ptr)); | |
2685 | return NULL; | |
2686 | } | |
2687 | ||
2688 | res = new_constant( NULL, 0, "charnames", res, NULL, backslash_ptr, | |
2689 | /* include the <}> */ | |
2690 | e - backslash_ptr + 1); | |
6f613c73 | 2691 | if (! SvPOK(res)) { |
b6407c49 | 2692 | SvREFCNT_dec_NN(res); |
6f613c73 KW |
2693 | return NULL; |
2694 | } | |
2695 | ||
0c415a79 KW |
2696 | /* See if the charnames handler is the Perl core's, and if so, we can skip |
2697 | * the validation needed for a user-supplied one, as Perl's does its own | |
2698 | * validation. */ | |
2699 | table = GvHV(PL_hintgv); /* ^H */ | |
2700 | cvp = hv_fetchs(table, "charnames", FALSE); | |
67a057d6 FC |
2701 | if (cvp && (cv = *cvp) && SvROK(cv) && ((rv = SvRV(cv)) != NULL) |
2702 | && SvTYPE(rv) == SVt_PVCV && ((stash = CvSTASH(rv)) != NULL)) | |
0c415a79 KW |
2703 | { |
2704 | const char * const name = HvNAME(stash); | |
2705 | if strEQ(name, "_charnames") { | |
2706 | return res; | |
2707 | } | |
2708 | } | |
2709 | ||
bde9e88d KW |
2710 | /* Here, it isn't Perl's charname handler. We can't rely on a |
2711 | * user-supplied handler to validate the input name. For non-ut8 input, | |
2712 | * look to see that the first character is legal. Then loop through the | |
2713 | * rest checking that each is a continuation */ | |
6f613c73 | 2714 | |
b6ba1137 KW |
2715 | /* This code needs to be sync'ed with a regex in _charnames.pm which does |
2716 | * the same thing */ | |
2717 | ||
b6ba1137 | 2718 | if (! UTF) { |
bde9e88d | 2719 | if (! isALPHAU(*s)) { |
b6ba1137 KW |
2720 | goto bad_charname; |
2721 | } | |
bde9e88d KW |
2722 | s++; |
2723 | while (s < e) { | |
2724 | if (! isCHARNAME_CONT(*s)) { | |
b6ba1137 KW |
2725 | goto bad_charname; |
2726 | } | |
bd299e29 KW |
2727 | if (*s == ' ' && *(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) { |
2728 | Perl_warn(aTHX_ "A sequence of multiple spaces in a charnames alias definition is deprecated"); | |
2729 | } | |
bde9e88d | 2730 | s++; |
b6ba1137 | 2731 | } |
bd299e29 KW |
2732 | if (*(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) { |
2733 | Perl_warn(aTHX_ "Trailing white-space in a charnames alias definition is deprecated"); | |
2734 | } | |
b6ba1137 KW |
2735 | } |
2736 | else { | |
bde9e88d KW |
2737 | /* Similarly for utf8. For invariants can check directly; for other |
2738 | * Latin1, can calculate their code point and check; otherwise use a | |
2739 | * swash */ | |
2740 | if (UTF8_IS_INVARIANT(*s)) { | |
2741 | if (! isALPHAU(*s)) { | |
140b12ad KW |
2742 | goto bad_charname; |
2743 | } | |
bde9e88d KW |
2744 | s++; |
2745 | } else if (UTF8_IS_DOWNGRADEABLE_START(*s)) { | |
2746 | if (! isALPHAU(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*s, *(s+1))))) { | |
b6ba1137 | 2747 | goto bad_charname; |
6f613c73 | 2748 | } |
bde9e88d | 2749 | s += 2; |
6f613c73 | 2750 | } |
bde9e88d KW |
2751 | else { |
2752 | if (! PL_utf8_charname_begin) { | |
2753 | U8 flags = _CORE_SWASH_INIT_ACCEPT_INVLIST; | |
2754 | PL_utf8_charname_begin = _core_swash_init("utf8", | |
2755 | "_Perl_Charname_Begin", | |
2756 | &PL_sv_undef, | |
2757 | 1, 0, NULL, &flags); | |
2758 | } | |
2759 | if (! swash_fetch(PL_utf8_charname_begin, (U8 *) s, TRUE)) { | |
2760 | goto bad_charname; | |
2761 | } | |
2762 | s += UTF8SKIP(s); | |
2763 | } | |
2764 | ||
2765 | while (s < e) { | |
2766 | if (UTF8_IS_INVARIANT(*s)) { | |
2767 | if (! isCHARNAME_CONT(*s)) { | |
2768 | goto bad_charname; | |
2769 | } | |
bd299e29 KW |
2770 | if (*s == ' ' && *(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) { |
2771 | Perl_warn(aTHX_ "A sequence of multiple spaces in a charnames alias definition is deprecated"); | |
2772 | } | |
bde9e88d KW |
2773 | s++; |
2774 | } | |
2775 | else if (UTF8_IS_DOWNGRADEABLE_START(*s)) { | |
2776 | if (! isCHARNAME_CONT(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*s, | |
2777 | *(s+1))))) | |
2778 | { | |
2779 | goto bad_charname; | |
2780 | } | |
2781 | s += 2; | |
2782 | } | |
2783 | else { | |
2784 | if (! PL_utf8_charname_continue) { | |
2785 | U8 flags = _CORE_SWASH_INIT_ACCEPT_INVLIST; | |
2786 | PL_utf8_charname_continue = _core_swash_init("utf8", | |
2787 | "_Perl_Charname_Continue", | |
2788 | &PL_sv_undef, | |
2789 | 1, 0, NULL, &flags); | |
2790 | } | |
2791 | if (! swash_fetch(PL_utf8_charname_continue, (U8 *) s, TRUE)) { | |
2792 | goto bad_charname; | |
2793 | } | |
2794 | s += UTF8SKIP(s); | |
6f613c73 KW |
2795 | } |
2796 | } | |
bd299e29 KW |
2797 | if (*(s-1) == ' ' && ckWARN(WARN_DEPRECATED)) { |
2798 | Perl_warn(aTHX_ "Trailing white-space in a charnames alias definition is deprecated"); | |
2799 | } | |
6f613c73 KW |
2800 | } |
2801 | ||
94ca1619 | 2802 | if (SvUTF8(res)) { /* Don't accept malformed input */ |
bde9e88d KW |
2803 | const U8* first_bad_char_loc; |
2804 | STRLEN len; | |
2805 | const char* const str = SvPV_const(res, len); | |
2806 | if (! is_utf8_string_loc((U8 *) str, len, &first_bad_char_loc)) { | |
2807 | /* If warnings are on, this will print a more detailed analysis of | |
2808 | * what is wrong than the error message below */ | |
2809 | utf8n_to_uvuni(first_bad_char_loc, | |
2810 | (char *) first_bad_char_loc - str, | |
2811 | NULL, 0); | |
2812 | ||
2813 | /* We deliberately don't try to print the malformed character, | |
2814 | * which might not print very well; it also may be just the first | |
2815 | * of many malformations, so don't print what comes after it */ | |
2816 | yyerror_pv( | |
2817 | Perl_form(aTHX_ | |
2818 | "Malformed UTF-8 returned by %.*s immediately after '%.*s'", | |
2819 | (int) (e - backslash_ptr + 1), backslash_ptr, | |
2820 | (int) ((char *) first_bad_char_loc - str), str | |
2821 | ), | |
2822 | SVf_UTF8); | |
2823 | return NULL; | |
2824 | } | |
2825 | } | |
140b12ad | 2826 | |
bde9e88d | 2827 | return res; |
140b12ad | 2828 | |
bde9e88d KW |
2829 | bad_charname: { |
2830 | int bad_char_size = ((UTF) ? UTF8SKIP(s) : 1); | |
2831 | ||
2832 | /* The final %.*s makes sure that should the trailing NUL be missing | |
2833 | * that this print won't run off the end of the string */ | |
2834 | yyerror_pv( | |
2835 | Perl_form(aTHX_ | |
2836 | "Invalid character in \\N{...}; marked by <-- HERE in %.*s<-- HERE %.*s", | |
2837 | (int)(s - backslash_ptr + bad_char_size), backslash_ptr, | |
2838 | (int)(e - s + bad_char_size), s + bad_char_size | |
2839 | ), | |
2840 | UTF ? SVf_UTF8 : 0); | |
2841 | return NULL; | |
2842 | } | |
6f613c73 KW |
2843 | } |
2844 | ||
02aa26ce NT |
2845 | /* |
2846 | scan_const | |
2847 | ||
9da1dd8f DM |
2848 | Extracts the next constant part of a pattern, double-quoted string, |
2849 | or transliteration. This is terrifying code. | |
2850 | ||
2851 | For example, in parsing the double-quoted string "ab\x63$d", it would | |
2852 | stop at the '$' and return an OP_CONST containing 'abc'. | |
02aa26ce | 2853 | |
94def140 | 2854 | It looks at PL_lex_inwhat and PL_lex_inpat to find out whether it's |
3280af22 | 2855 | processing a pattern (PL_lex_inpat is true), a transliteration |
94def140 | 2856 | (PL_lex_inwhat == OP_TRANS is true), or a double-quoted string. |
02aa26ce | 2857 | |
94def140 TS |
2858 | Returns a pointer to the character scanned up to. If this is |
2859 | advanced from the start pointer supplied (i.e. if anything was | |
9da1dd8f | 2860 | successfully parsed), will leave an OP_CONST for the substring scanned |
6154021b | 2861 | in pl_yylval. Caller must intuit reason for not parsing further |
9b599b2a GS |
2862 | by looking at the next characters herself. |
2863 | ||
02aa26ce | 2864 | In patterns: |
9da1dd8f DM |
2865 | expand: |
2866 | \N{ABC} => \N{U+41.42.43} | |
2867 | ||
2868 | pass through: | |
2869 | all other \-char, including \N and \N{ apart from \N{ABC} | |
2870 | ||
2871 | stops on: | |
2872 | @ and $ where it appears to be a var, but not for $ as tail anchor | |
2873 | \l \L \u \U \Q \E | |
2874 | (?{ or (??{ | |
2875 | ||
02aa26ce NT |
2876 | |
2877 | In transliterations: | |
2878 | characters are VERY literal, except for - not at the start or end | |
94def140 TS |
2879 | of the string, which indicates a range. If the range is in bytes, |
2880 | scan_const expands the range to the full set of intermediate | |
2881 | characters. If the range is in utf8, the hyphen is replaced with | |
2882 | a certain range mark which will be handled by pmtrans() in op.c. | |
02aa26ce NT |
2883 | |
2884 | In double-quoted strings: | |
2885 | backslashes: | |
2886 | double-quoted style: \r and \n | |
ff3f963a | 2887 | constants: \x31, etc. |
94def140 | 2888 | deprecated backrefs: \1 (in substitution replacements) |
02aa26ce NT |
2889 | case and quoting: \U \Q \E |
2890 | stops on @ and $ | |
2891 | ||
2892 | scan_const does *not* construct ops to handle interpolated strings. | |
2893 | It stops processing as soon as it finds an embedded $ or @ variable | |
2894 | and leaves it to the caller to work out what's going on. | |
2895 | ||
94def140 TS |
2896 | embedded arrays (whether in pattern or not) could be: |
2897 | @foo, @::foo, @'foo, @{foo}, @$foo, @+, @-. | |
2898 | ||
2899 | $ in double-quoted strings must be the symbol of an embedded scalar. | |
02aa26ce NT |
2900 | |
2901 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
2902 | it's a tail anchor if $ is the last thing in the string, or if it's | |
94def140 | 2903 | followed by one of "()| \r\n\t" |
02aa26ce | 2904 | |
9da1dd8f | 2905 | \1 (backreferences) are turned into $1 in substitutions |
02aa26ce NT |
2906 | |
2907 | The structure of the code is | |
2908 | while (there's a character to process) { | |
94def140 TS |
2909 | handle transliteration ranges |
2910 | skip regexp comments /(?#comment)/ and codes /(?{code})/ | |
2911 | skip #-initiated comments in //x patterns | |
2912 | check for embedded arrays | |
02aa26ce NT |
2913 | check for embedded scalars |
2914 | if (backslash) { | |
94def140 | 2915 | deprecate \1 in substitution replacements |
02aa26ce NT |
2916 | handle string-changing backslashes \l \U \Q \E, etc. |
2917 | switch (what was escaped) { | |
94def140 | 2918 | handle \- in a transliteration (becomes a literal -) |
ff3f963a | 2919 | if a pattern and not \N{, go treat as regular character |
94def140 TS |
2920 | handle \132 (octal characters) |
2921 | handle \x15 and \x{1234} (hex characters) | |
ff3f963a | 2922 | handle \N{name} (named characters, also \N{3,5} in a pattern) |
94def140 TS |
2923 | handle \cV (control characters) |
2924 | handle printf-style backslashes (\f, \r, \n, etc) | |
02aa26ce | 2925 | } (end switch) |
77a135fe | 2926 | continue |
02aa26ce | 2927 | } (end if backslash) |
77a135fe | 2928 | handle regular character |
02aa26ce | 2929 | } (end while character to read) |
4e553d73 | 2930 | |
02aa26ce NT |
2931 | */ |
2932 | ||
76e3520e | 2933 | STATIC char * |
cea2e8a9 | 2934 | S_scan_const(pTHX_ char *start) |
79072805 | 2935 | { |
97aff369 | 2936 | dVAR; |
eb578fdb | 2937 | char *send = PL_bufend; /* end of the constant */ |
77a135fe KW |
2938 | SV *sv = newSV(send - start); /* sv for the constant. See |
2939 | note below on sizing. */ | |
eb578fdb KW |
2940 | char *s = start; /* start of the constant */ |
2941 | char *d = SvPVX(sv); /* destination for copies */ | |
02aa26ce | 2942 | bool dorange = FALSE; /* are we in a translit range? */ |
c2e66d9e | 2943 | bool didrange = FALSE; /* did we just finish a range? */ |
2866decb | 2944 | bool in_charclass = FALSE; /* within /[...]/ */ |
b953e60c KW |
2945 | bool has_utf8 = FALSE; /* Output constant is UTF8 */ |
2946 | bool this_utf8 = cBOOL(UTF); /* Is the source string assumed | |
77a135fe KW |
2947 | to be UTF8? But, this can |
2948 | show as true when the source | |
2949 | isn't utf8, as for example | |
2950 | when it is entirely composed | |
2951 | of hex constants */ | |
6f613c73 | 2952 | SV *res; /* result from charnames */ |
77a135fe KW |
2953 | |
2954 | /* Note on sizing: The scanned constant is placed into sv, which is | |
2955 | * initialized by newSV() assuming one byte of output for every byte of | |
2956 | * input. This routine expects newSV() to allocate an extra byte for a | |
2957 | * trailing NUL, which this routine will append if it gets to the end of | |
2958 | * the input. There may be more bytes of input than output (eg., \N{LATIN | |
2959 | * CAPITAL LETTER A}), or more output than input if the constant ends up | |
2960 | * recoded to utf8, but each time a construct is found that might increase | |
2961 | * the needed size, SvGROW() is called. Its size parameter each time is | |
2962 | * based on the best guess estimate at the time, namely the length used so | |
2963 | * far, plus the length the current construct will occupy, plus room for | |
2964 | * the trailing NUL, plus one byte for every input byte still unscanned */ | |
2965 | ||
c3320c2a KW |
2966 | UV uv = UV_MAX; /* Initialize to weird value to try to catch any uses |
2967 | before set */ | |
4c3a8340 TS |
2968 | #ifdef EBCDIC |
2969 | UV literal_endpoint = 0; | |
e294cc5d | 2970 | bool native_range = TRUE; /* turned to FALSE if the first endpoint is Unicode. */ |
4c3a8340 | 2971 | #endif |
012bcf8d | 2972 | |
7918f24d NC |
2973 | PERL_ARGS_ASSERT_SCAN_CONST; |
2974 | ||
bb16bae8 | 2975 | assert(PL_lex_inwhat != OP_TRANSR); |
2b9d42f0 NIS |
2976 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
2977 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
2978 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
2979 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
2980 | } | |
2981 | ||
b899e89d FC |
2982 | /* Protect sv from errors and fatal warnings. */ |
2983 | ENTER_with_name("scan_const"); | |
2984 | SAVEFREESV(sv); | |
2b9d42f0 | 2985 | |
79072805 | 2986 | while (s < send || dorange) { |
ff3f963a | 2987 | |
02aa26ce | 2988 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 2989 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 2990 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 2991 | if (dorange) { |
1ba5c669 JH |
2992 | I32 i; /* current expanded character */ |
2993 | I32 min; /* first character in range */ | |
2994 | I32 max; /* last character in range */ | |
02aa26ce | 2995 | |
e294cc5d JH |
2996 | #ifdef EBCDIC |
2997 | UV uvmax = 0; | |
2998 | #endif | |
2999 | ||
3000 | if (has_utf8 | |
3001 | #ifdef EBCDIC | |
3002 | && !native_range | |
3003 | #endif | |
1953db30 | 3004 | ) { |
9d4ba2ae | 3005 | char * const c = (char*)utf8_hop((U8*)d, -1); |
8973db79 JH |
3006 | char *e = d++; |
3007 | while (e-- > c) | |
3008 | *(e + 1) = *e; | |
25716404 | 3009 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
3010 | /* mark the range as done, and continue */ |
3011 | dorange = FALSE; | |
3012 | didrange = TRUE; | |
3013 | continue; | |
3014 | } | |
2b9d42f0 | 3015 | |
95a20fc0 | 3016 | i = d - SvPVX_const(sv); /* remember current offset */ |
e294cc5d JH |
3017 | #ifdef EBCDIC |
3018 | SvGROW(sv, | |
3019 | SvLEN(sv) + (has_utf8 ? | |
3020 | (512 - UTF_CONTINUATION_MARK + | |
3021 | UNISKIP(0x100)) | |
3022 | : 256)); | |
3023 | /* How many two-byte within 0..255: 128 in UTF-8, | |
3024 | * 96 in UTF-8-mod. */ | |
3025 | #else | |
9cbb5ea2 | 3026 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
e294cc5d | 3027 | #endif |
9cbb5ea2 | 3028 | d = SvPVX(sv) + i; /* refresh d after realloc */ |
e294cc5d JH |
3029 | #ifdef EBCDIC |
3030 | if (has_utf8) { | |
3031 | int j; | |
3032 | for (j = 0; j <= 1; j++) { | |
3033 | char * const c = (char*)utf8_hop((U8*)d, -1); | |
3034 | const UV uv = utf8n_to_uvchr((U8*)c, d - c, NULL, 0); | |
3035 | if (j) | |
3036 | min = (U8)uv; | |
3037 | else if (uv < 256) | |
3038 | max = (U8)uv; | |
3039 | else { | |
3040 | max = (U8)0xff; /* only to \xff */ | |
3041 | uvmax = uv; /* \x{100} to uvmax */ | |
3042 | } | |
3043 | d = c; /* eat endpoint chars */ | |
3044 | } | |
3045 | } | |
3046 | else { | |
3047 | #endif | |
3048 | d -= 2; /* eat the first char and the - */ | |
3049 | min = (U8)*d; /* first char in range */ | |
3050 | max = (U8)d[1]; /* last char in range */ | |
3051 | #ifdef EBCDIC | |
3052 | } | |
3053 | #endif | |
8ada0baa | 3054 | |
c2e66d9e | 3055 | if (min > max) { |
01ec43d0 | 3056 | Perl_croak(aTHX_ |
d1573ac7 | 3057 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 3058 | (char)min, (char)max); |
c2e66d9e GS |
3059 | } |
3060 | ||
c7f1f016 | 3061 | #ifdef EBCDIC |
4c3a8340 TS |
3062 | if (literal_endpoint == 2 && |
3063 | ((isLOWER(min) && isLOWER(max)) || | |
3064 | (isUPPER(min) && isUPPER(max)))) { | |
8ada0baa JH |
3065 | if (isLOWER(min)) { |
3066 | for (i = min; i <= max; i++) | |
3067 | if (isLOWER(i)) | |
db42d148 | 3068 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
3069 | } else { |
3070 | for (i = min; i <= max; i++) | |
3071 | if (isUPPER(i)) | |
db42d148 | 3072 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
3073 | } |
3074 | } | |
3075 | else | |
3076 | #endif | |
3077 | for (i = min; i <= max; i++) | |
e294cc5d JH |
3078 | #ifdef EBCDIC |
3079 | if (has_utf8) { | |
3080 | const U8 ch = (U8)NATIVE_TO_UTF(i); | |
3081 | if (UNI_IS_INVARIANT(ch)) | |
3082 | *d++ = (U8)i; | |
3083 | else { | |
3084 | *d++ = (U8)UTF8_EIGHT_BIT_HI(ch); | |
3085 | *d++ = (U8)UTF8_EIGHT_BIT_LO(ch); | |
3086 | } | |
3087 | } | |
3088 | else | |
3089 | #endif | |
3090 | *d++ = (char)i; | |
3091 | ||
3092 | #ifdef EBCDIC | |
3093 | if (uvmax) { | |
3094 | d = (char*)uvchr_to_utf8((U8*)d, 0x100); | |
3095 | if (uvmax > 0x101) | |
3096 | *d++ = (char)UTF_TO_NATIVE(0xff); | |
3097 | if (uvmax > 0x100) | |
3098 | d = (char*)uvchr_to_utf8((U8*)d, uvmax); | |
3099 | } | |
3100 | #endif | |
02aa26ce NT |
3101 | |
3102 | /* mark the range as done, and continue */ | |
79072805 | 3103 | dorange = FALSE; |
01ec43d0 | 3104 | didrange = TRUE; |
4c3a8340 TS |
3105 | #ifdef EBCDIC |
3106 | literal_endpoint = 0; | |
3107 | #endif | |
79072805 | 3108 | continue; |
4e553d73 | 3109 | } |
02aa26ce NT |
3110 | |
3111 | /* range begins (ignore - as first or last char) */ | |
79072805 | 3112 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 3113 | if (didrange) { |
1fafa243 | 3114 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 3115 | } |
e294cc5d JH |
3116 | if (has_utf8 |
3117 | #ifdef EBCDIC | |
3118 | && !native_range | |
3119 | #endif | |
3120 | ) { | |
25716404 | 3121 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
3122 | s++; |
3123 | continue; | |
3124 | } | |
79072805 LW |
3125 | dorange = TRUE; |
3126 | s++; | |
01ec43d0 GS |
3127 | } |
3128 | else { | |
3129 | didrange = FALSE; | |
4c3a8340 TS |
3130 | #ifdef EBCDIC |
3131 | literal_endpoint = 0; | |
e294cc5d | 3132 | native_range = TRUE; |
4c3a8340 | 3133 | #endif |
01ec43d0 | 3134 | } |
79072805 | 3135 | } |
02aa26ce NT |
3136 | |
3137 | /* if we get here, we're not doing a transliteration */ | |
3138 | ||
e4a2df84 DM |
3139 | else if (*s == '[' && PL_lex_inpat && !in_charclass) { |
3140 | char *s1 = s-1; | |
3141 | int esc = 0; | |
3142 | while (s1 >= start && *s1-- == '\\') | |
3143 | esc = !esc; | |
3144 | if (!esc) | |
3145 | in_charclass = TRUE; | |
3146 | } | |
2866decb | 3147 | |
e4a2df84 DM |
3148 | else if (*s == ']' && PL_lex_inpat && in_charclass) { |
3149 | char *s1 = s-1; | |
3150 | int esc = 0; | |
3151 | while (s1 >= start && *s1-- == '\\') | |
3152 | esc = !esc; | |
3153 | if (!esc) | |
3154 | in_charclass = FALSE; | |
3155 | } | |
2866decb | 3156 | |
9da1dd8f DM |
3157 | /* skip for regexp comments /(?#comment)/, except for the last |
3158 | * char, which will be done separately. | |
3159 | * Stop on (?{..}) and friends */ | |
3160 | ||
3280af22 | 3161 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 3162 | if (s[2] == '#') { |
e994fd66 | 3163 | while (s+1 < send && *s != ')') |
db42d148 | 3164 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 | 3165 | } |
2866decb | 3166 | else if (!PL_lex_casemods && !in_charclass && |
d3cec5e5 DM |
3167 | ( s[2] == '{' /* This should match regcomp.c */ |
3168 | || (s[2] == '?' && s[3] == '{'))) | |
155aba94 | 3169 | { |
9da1dd8f | 3170 | break; |
cc6b7395 | 3171 | } |
748a9306 | 3172 | } |
02aa26ce NT |
3173 | |
3174 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 | 3175 | else if (*s == '#' && PL_lex_inpat && |
73134a2e | 3176 | ((PMOP*)PL_lex_inpat)->op_pmflags & RXf_PMf_EXTENDED) { |
748a9306 | 3177 | while (s+1 < send && *s != '\n') |
db42d148 | 3178 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 3179 | } |
02aa26ce | 3180 | |
9da1dd8f DM |
3181 | /* no further processing of single-quoted regex */ |
3182 | else if (PL_lex_inpat && SvIVX(PL_linestr) == '\'') | |
3183 | goto default_action; | |
3184 | ||
5d1d4326 | 3185 | /* check for embedded arrays |
da6eedaa | 3186 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 3187 | */ |
1749ea0d | 3188 | else if (*s == '@' && s[1]) { |
8a2bca12 | 3189 | if (isWORDCHAR_lazy_if(s+1,UTF)) |
1749ea0d TS |
3190 | break; |
3191 | if (strchr(":'{$", s[1])) | |
3192 | break; | |
3193 | if (!PL_lex_inpat && (s[1] == '+' || s[1] == '-')) | |
3194 | break; /* in regexp, neither @+ nor @- are interpolated */ | |
3195 | } | |
02aa26ce NT |
3196 | |
3197 | /* check for embedded scalars. only stop if we're sure it's a | |
3198 | variable. | |
3199 | */ | |
79072805 | 3200 | else if (*s == '$') { |
3280af22 | 3201 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 3202 | break; |
77772344 | 3203 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) { |
a2a5de95 NC |
3204 | if (s[1] == '\\') { |
3205 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
3206 | "Possible unintended interpolation of $\\ in regex"); | |
77772344 | 3207 | } |
79072805 | 3208 | break; /* in regexp, $ might be tail anchor */ |
77772344 | 3209 | } |
79072805 | 3210 | } |
02aa26ce | 3211 | |
2b9d42f0 NIS |
3212 | /* End of else if chain - OP_TRANS rejoin rest */ |
3213 | ||
02aa26ce | 3214 | /* backslashes */ |
79072805 | 3215 | if (*s == '\\' && s+1 < send) { |
ff3f963a KW |
3216 | char* e; /* Can be used for ending '}', etc. */ |
3217 | ||
79072805 | 3218 | s++; |
02aa26ce | 3219 | |
7d0fc23c KW |
3220 | /* warn on \1 - \9 in substitution replacements, but note that \11 |
3221 | * is an octal; and \19 is \1 followed by '9' */ | |
3280af22 | 3222 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 3223 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 3224 | { |
a2a5de95 | 3225 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
3226 | *--s = '$'; |
3227 | break; | |
3228 | } | |
02aa26ce NT |
3229 | |
3230 | /* string-change backslash escapes */ | |
838f2281 | 3231 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQF", *s)) { |
79072805 LW |
3232 | --s; |
3233 | break; | |
3234 | } | |
ff3f963a KW |
3235 | /* In a pattern, process \N, but skip any other backslash escapes. |
3236 | * This is because we don't want to translate an escape sequence | |
3237 | * into a meta symbol and have the regex compiler use the meta | |
3238 | * symbol meaning, e.g. \x{2E} would be confused with a dot. But | |
3239 | * in spite of this, we do have to process \N here while the proper | |
3240 | * charnames handler is in scope. See bugs #56444 and #62056. | |
3241 | * There is a complication because \N in a pattern may also stand | |
3242 | * for 'match a non-nl', and not mean a charname, in which case its | |
3243 | * processing should be deferred to the regex compiler. To be a | |
3244 | * charname it must be followed immediately by a '{', and not look | |
3245 | * like \N followed by a curly quantifier, i.e., not something like | |
3246 | * \N{3,}. regcurly returns a boolean indicating if it is a legal | |
3247 | * quantifier */ | |
3248 | else if (PL_lex_inpat | |
3249 | && (*s != 'N' | |
3250 | || s[1] != '{' | |
4d68ffa0 | 3251 | || regcurly(s + 1, FALSE))) |
ff3f963a | 3252 | { |
cc74c5bd TS |
3253 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
3254 | goto default_action; | |
3255 | } | |
02aa26ce | 3256 | |
79072805 | 3257 | switch (*s) { |
02aa26ce NT |
3258 | |
3259 | /* quoted - in transliterations */ | |
79072805 | 3260 | case '-': |
3280af22 | 3261 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
3262 | *d++ = *s++; |
3263 | continue; | |
3264 | } | |
3265 | /* FALL THROUGH */ | |
3266 | default: | |
11b8faa4 | 3267 | { |
15861f94 | 3268 | if ((isALPHANUMERIC(*s))) |
a2a5de95 NC |
3269 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
3270 | "Unrecognized escape \\%c passed through", | |
3271 | *s); | |
11b8faa4 | 3272 | /* default action is to copy the quoted character */ |
f9a63242 | 3273 | goto default_action; |
11b8faa4 | 3274 | } |
02aa26ce | 3275 | |
632403cc | 3276 | /* eg. \132 indicates the octal constant 0132 */ |
79072805 LW |
3277 | case '0': case '1': case '2': case '3': |
3278 | case '4': case '5': case '6': case '7': | |
ba210ebe | 3279 | { |
5e0a247b | 3280 | I32 flags = PERL_SCAN_SILENT_ILLDIGIT; |
53305cf1 | 3281 | STRLEN len = 3; |
77a135fe | 3282 | uv = NATIVE_TO_UNI(grok_oct(s, &len, &flags, NULL)); |
ba210ebe | 3283 | s += len; |
5e0a247b KW |
3284 | if (len < 3 && s < send && isDIGIT(*s) |
3285 | && ckWARN(WARN_MISC)) | |
3286 | { | |
3287 | Perl_warner(aTHX_ packWARN(WARN_MISC), | |
3288 | "%s", form_short_octal_warning(s, len)); | |
3289 | } | |
ba210ebe | 3290 | } |
012bcf8d | 3291 | goto NUM_ESCAPE_INSERT; |
02aa26ce | 3292 | |
f0a2b745 KW |
3293 | /* eg. \o{24} indicates the octal constant \024 */ |
3294 | case 'o': | |
3295 | { | |
454155d9 | 3296 | const char* error; |
f0a2b745 | 3297 | |
00ce5563 | 3298 | bool valid = grok_bslash_o(&s, &uv, &error, |
80f4111b KW |
3299 | TRUE, /* Output warning */ |
3300 | FALSE, /* Not strict */ | |
17896a85 KW |
3301 | TRUE, /* Output warnings for |
3302 | non-portables */ | |
80f4111b | 3303 | UTF); |
454155d9 | 3304 | if (! valid) { |
f0a2b745 KW |
3305 | yyerror(error); |
3306 | continue; | |
3307 | } | |
3308 | goto NUM_ESCAPE_INSERT; | |
3309 | } | |
3310 | ||
77a135fe | 3311 | /* eg. \x24 indicates the hex constant 0x24 */ |
79072805 | 3312 | case 'x': |
a0481293 | 3313 | { |
a0481293 | 3314 | const char* error; |
355860ce | 3315 | |
00ce5563 | 3316 | bool valid = grok_bslash_x(&s, &uv, &error, |
80f4111b KW |
3317 | TRUE, /* Output warning */ |
3318 | FALSE, /* Not strict */ | |
17896a85 KW |
3319 | TRUE, /* Output warnings for |
3320 | non-portables */ | |
80f4111b | 3321 | UTF); |
a0481293 KW |
3322 | if (! valid) { |
3323 | yyerror(error); | |
355860ce | 3324 | continue; |
ba210ebe | 3325 | } |
012bcf8d GS |
3326 | } |
3327 | ||
3328 | NUM_ESCAPE_INSERT: | |
ff3f963a KW |
3329 | /* Insert oct or hex escaped character. There will always be |
3330 | * enough room in sv since such escapes will be longer than any | |
3331 | * UTF-8 sequence they can end up as, except if they force us | |
3332 | * to recode the rest of the string into utf8 */ | |
ba7cea30 | 3333 | |
77a135fe | 3334 | /* Here uv is the ordinal of the next character being added in |
ff3f963a | 3335 | * unicode (converted from native). */ |
77a135fe | 3336 | if (!UNI_IS_INVARIANT(uv)) { |
9aa983d2 | 3337 | if (!has_utf8 && uv > 255) { |
77a135fe KW |
3338 | /* Might need to recode whatever we have accumulated so |
3339 | * far if it contains any chars variant in utf8 or | |
3340 | * utf-ebcdic. */ | |
3341 | ||
3342 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3343 | SvPOK_on(sv); | |
3344 | *d = '\0'; | |
77a135fe | 3345 | /* See Note on sizing above. */ |
7bf79863 KW |
3346 | sv_utf8_upgrade_flags_grow(sv, |
3347 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3348 | UNISKIP(uv) + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3349 | d = SvPVX(sv) + SvCUR(sv); |
3350 | has_utf8 = TRUE; | |
012bcf8d GS |
3351 | } |
3352 | ||
77a135fe KW |
3353 | if (has_utf8) { |
3354 | d = (char*)uvuni_to_utf8((U8*)d, uv); | |
f9a63242 JH |
3355 | if (PL_lex_inwhat == OP_TRANS && |
3356 | PL_sublex_info.sub_op) { | |
3357 | PL_sublex_info.sub_op->op_private |= | |
3358 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
3359 | : OPpTRANS_TO_UTF); | |
f9a63242 | 3360 | } |
e294cc5d JH |
3361 | #ifdef EBCDIC |
3362 | if (uv > 255 && !dorange) | |
3363 | native_range = FALSE; | |
3364 | #endif | |
012bcf8d | 3365 | } |
a0ed51b3 | 3366 | else { |
012bcf8d | 3367 | *d++ = (char)uv; |
a0ed51b3 | 3368 | } |
012bcf8d GS |
3369 | } |
3370 | else { | |
c4d5f83a | 3371 | *d++ = (char) uv; |
a0ed51b3 | 3372 | } |
79072805 | 3373 | continue; |
02aa26ce | 3374 | |
4a2d328f | 3375 | case 'N': |
ff3f963a KW |
3376 | /* In a non-pattern \N must be a named character, like \N{LATIN |
3377 | * SMALL LETTER A} or \N{U+0041}. For patterns, it also can | |
3378 | * mean to match a non-newline. For non-patterns, named | |
3379 | * characters are converted to their string equivalents. In | |
3380 | * patterns, named characters are not converted to their | |
3381 | * ultimate forms for the same reasons that other escapes | |
3382 | * aren't. Instead, they are converted to the \N{U+...} form | |
3383 | * to get the value from the charnames that is in effect right | |
3384 | * now, while preserving the fact that it was a named character | |
3385 | * so that the regex compiler knows this */ | |
3386 | ||
3387 | /* This section of code doesn't generally use the | |
3388 | * NATIVE_TO_NEED() macro to transform the input. I (khw) did | |
3389 | * a close examination of this macro and determined it is a | |
3390 | * no-op except on utfebcdic variant characters. Every | |
3391 | * character generated by this that would normally need to be | |
3392 | * enclosed by this macro is invariant, so the macro is not | |
7538f724 KW |
3393 | * needed, and would complicate use of copy(). XXX There are |
3394 | * other parts of this file where the macro is used | |
3395 | * inconsistently, but are saved by it being a no-op */ | |
ff3f963a KW |
3396 | |
3397 | /* The structure of this section of code (besides checking for | |
3398 | * errors and upgrading to utf8) is: | |
3399 | * Further disambiguate between the two meanings of \N, and if | |
3400 | * not a charname, go process it elsewhere | |
0a96133f KW |
3401 | * If of form \N{U+...}, pass it through if a pattern; |
3402 | * otherwise convert to utf8 | |
3403 | * Otherwise must be \N{NAME}: convert to \N{U+c1.c2...} if a | |
3404 | * pattern; otherwise convert to utf8 */ | |
ff3f963a KW |
3405 | |
3406 | /* Here, s points to the 'N'; the test below is guaranteed to | |
3407 | * succeed if we are being called on a pattern as we already | |
3408 | * know from a test above that the next character is a '{'. | |
3409 | * On a non-pattern \N must mean 'named sequence, which | |
3410 | * requires braces */ | |
3411 | s++; | |
3412 | if (*s != '{') { | |
3413 | yyerror("Missing braces on \\N{}"); | |
3414 | continue; | |
3415 | } | |
3416 | s++; | |
3417 | ||
0a96133f | 3418 | /* If there is no matching '}', it is an error. */ |
ff3f963a KW |
3419 | if (! (e = strchr(s, '}'))) { |
3420 | if (! PL_lex_inpat) { | |
5777a3f7 | 3421 | yyerror("Missing right brace on \\N{}"); |
0a96133f KW |
3422 | } else { |
3423 | yyerror("Missing right brace on \\N{} or unescaped left brace after \\N."); | |
dbc0d4f2 | 3424 | } |
0a96133f | 3425 | continue; |
ff3f963a | 3426 | } |
cddc7ef4 | 3427 | |
ff3f963a | 3428 | /* Here it looks like a named character */ |
cddc7ef4 | 3429 | |
ff3f963a KW |
3430 | if (*s == 'U' && s[1] == '+') { /* \N{U+...} */ |
3431 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
3432 | | PERL_SCAN_DISALLOW_PREFIX; | |
3433 | STRLEN len; | |
3434 | ||
3435 | /* For \N{U+...}, the '...' is a unicode value even on | |
3436 | * EBCDIC machines */ | |
3437 | s += 2; /* Skip to next char after the 'U+' */ | |
3438 | len = e - s; | |
3439 | uv = grok_hex(s, &len, &flags, NULL); | |
3440 | if (len == 0 || len != (STRLEN)(e - s)) { | |
3441 | yyerror("Invalid hexadecimal number in \\N{U+...}"); | |
3442 | s = e + 1; | |
3443 | continue; | |
3444 | } | |
3445 | ||
3446 | if (PL_lex_inpat) { | |
3447 | ||
e2a7e165 KW |
3448 | /* On non-EBCDIC platforms, pass through to the regex |
3449 | * compiler unchanged. The reason we evaluated the | |
3450 | * number above is to make sure there wasn't a syntax | |
3451 | * error. But on EBCDIC we convert to native so | |
3452 | * downstream code can continue to assume it's native | |
3453 | */ | |
ff3f963a | 3454 | s -= 5; /* Include the '\N{U+' */ |
e2a7e165 KW |
3455 | #ifdef EBCDIC |
3456 | d += my_snprintf(d, e - s + 1 + 1, /* includes the } | |
3457 | and the \0 */ | |
3458 | "\\N{U+%X}", | |
3459 | (unsigned int) UNI_TO_NATIVE(uv)); | |
3460 | #else | |
ff3f963a KW |
3461 | Copy(s, d, e - s + 1, char); /* 1 = include the } */ |
3462 | d += e - s + 1; | |
e2a7e165 | 3463 | #endif |
ff3f963a KW |
3464 | } |
3465 | else { /* Not a pattern: convert the hex to string */ | |
3466 | ||
3467 | /* If destination is not in utf8, unconditionally | |
3468 | * recode it to be so. This is because \N{} implies | |
3469 | * Unicode semantics, and scalars have to be in utf8 | |
3470 | * to guarantee those semantics */ | |
3471 | if (! has_utf8) { | |
3472 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3473 | SvPOK_on(sv); | |
3474 | *d = '\0'; | |
3475 | /* See Note on sizing above. */ | |
3476 | sv_utf8_upgrade_flags_grow( | |
3477 | sv, | |
3478 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3479 | UNISKIP(uv) + (STRLEN)(send - e) + 1); | |
3480 | d = SvPVX(sv) + SvCUR(sv); | |
3481 | has_utf8 = TRUE; | |
3482 | } | |
3483 | ||
3484 | /* Add the string to the output */ | |
3485 | if (UNI_IS_INVARIANT(uv)) { | |
3486 | *d++ = (char) uv; | |
3487 | } | |
3488 | else d = (char*)uvuni_to_utf8((U8*)d, uv); | |
3489 | } | |
3490 | } | |
6f613c73 KW |
3491 | else /* Here is \N{NAME} but not \N{U+...}. */ |
3492 | if ((res = get_and_check_backslash_N_name(s, e))) | |
3493 | { | |
3494 | STRLEN len; | |
3495 | const char *str = SvPV_const(res, len); | |
3496 | if (PL_lex_inpat) { | |
ff3f963a KW |
3497 | |
3498 | if (! len) { /* The name resolved to an empty string */ | |
3499 | Copy("\\N{}", d, 4, char); | |
3500 | d += 4; | |
3501 | } | |
3502 | else { | |
3503 | /* In order to not lose information for the regex | |
3504 | * compiler, pass the result in the specially made | |
3505 | * syntax: \N{U+c1.c2.c3...}, where c1 etc. are | |
3506 | * the code points in hex of each character | |
3507 | * returned by charnames */ | |
3508 | ||
3509 | const char *str_end = str + len; | |
3b721c4f | 3510 | const STRLEN off = d - SvPVX_const(sv); |
94ca1619 KW |
3511 | |
3512 | if (! SvUTF8(res)) { | |
3513 | /* For the non-UTF-8 case, we can determine the | |
3514 | * exact length needed without having to parse | |
3515 | * through the string. Each character takes up | |
3516 | * 2 hex digits plus either a trailing dot or | |
3517 | * the "}" */ | |
3518 | d = off + SvGROW(sv, off | |
3519 | + 3 * len | |
3520 | + 6 /* For the "\N{U+", and | |
3521 | trailing NUL */ | |
3522 | + (STRLEN)(send - e)); | |
3523 | Copy("\\N{U+", d, 5, char); | |
3524 | d += 5; | |
3525 | while (str < str_end) { | |
3526 | char hex_string[4]; | |
3527 | my_snprintf(hex_string, sizeof(hex_string), | |
3528 | "%02X.", (U8) *str); | |
3529 | Copy(hex_string, d, 3, char); | |
3530 | d += 3; | |
3531 | str++; | |
3532 | } | |
3533 | d--; /* We will overwrite below the final | |
3534 | dot with a right brace */ | |
3535 | } | |
3536 | else { | |
1953db30 KW |
3537 | STRLEN char_length; /* cur char's byte length */ |
3538 | ||
3539 | /* and the number of bytes after this is | |
3540 | * translated into hex digits */ | |
3541 | STRLEN output_length; | |
3542 | ||
3543 | /* 2 hex per byte; 2 chars for '\N'; 2 chars | |
3544 | * for max('U+', '.'); and 1 for NUL */ | |
3545 | char hex_string[2 * UTF8_MAXBYTES + 5]; | |
3546 | ||
3547 | /* Get the first character of the result. */ | |
3548 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3549 | len, | |
3550 | &char_length, | |
3551 | UTF8_ALLOW_ANYUV); | |
3552 | /* Convert first code point to hex, including | |
3553 | * the boiler plate before it. For all these, | |
3554 | * we convert to native format so that | |
3555 | * downstream code can continue to assume the | |
3556 | * input is native */ | |
3557 | output_length = | |
3558 | my_snprintf(hex_string, sizeof(hex_string), | |
3559 | "\\N{U+%X", | |
3560 | (unsigned int) UNI_TO_NATIVE(uv)); | |
3561 | ||
3562 | /* Make sure there is enough space to hold it */ | |
3563 | d = off + SvGROW(sv, off | |
3564 | + output_length | |
3565 | + (STRLEN)(send - e) | |
3566 | + 2); /* '}' + NUL */ | |
3567 | /* And output it */ | |
3568 | Copy(hex_string, d, output_length, char); | |
3569 | d += output_length; | |
3570 | ||
3571 | /* For each subsequent character, append dot and | |
3572 | * its ordinal in hex */ | |
3573 | while ((str += char_length) < str_end) { | |
3574 | const STRLEN off = d - SvPVX_const(sv); | |
3575 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3576 | str_end - str, | |
3577 | &char_length, | |
3578 | UTF8_ALLOW_ANYUV); | |
3579 | output_length = | |
3580 | my_snprintf(hex_string, | |
3581 | sizeof(hex_string), | |
3582 | ".%X", | |
3583 | (unsigned int) UNI_TO_NATIVE(uv)); | |
3584 | ||
3585 | d = off + SvGROW(sv, off | |
3586 | + output_length | |
3587 | + (STRLEN)(send - e) | |
3588 | + 2); /* '}' + NUL */ | |
3589 | Copy(hex_string, d, output_length, char); | |
3590 | d += output_length; | |
3591 | } | |
94ca1619 | 3592 | } |
ff3f963a KW |
3593 | |
3594 | *d++ = '}'; /* Done. Add the trailing brace */ | |
3595 | } | |
3596 | } | |
3597 | else { /* Here, not in a pattern. Convert the name to a | |
3598 | * string. */ | |
3599 | ||
3600 | /* If destination is not in utf8, unconditionally | |
3601 | * recode it to be so. This is because \N{} implies | |
3602 | * Unicode semantics, and scalars have to be in utf8 | |
3603 | * to guarantee those semantics */ | |
3604 | if (! has_utf8) { | |
3605 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3606 | SvPOK_on(sv); | |
3607 | *d = '\0'; | |
3608 | /* See Note on sizing above. */ | |
3609 | sv_utf8_upgrade_flags_grow(sv, | |
3610 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3611 | len + (STRLEN)(send - s) + 1); | |
3612 | d = SvPVX(sv) + SvCUR(sv); | |
3613 | has_utf8 = TRUE; | |
3614 | } else if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ | |
3615 | ||
3616 | /* See Note on sizing above. (NOTE: SvCUR() is not | |
3617 | * set correctly here). */ | |
3618 | const STRLEN off = d - SvPVX_const(sv); | |
3619 | d = off + SvGROW(sv, off + len + (STRLEN)(send - s) + 1); | |
3620 | } | |
3621 | Copy(str, d, len, char); | |
3622 | d += len; | |
423cee85 | 3623 | } |
6f613c73 | 3624 | |
423cee85 | 3625 | SvREFCNT_dec(res); |
cb233ae3 | 3626 | |
cb233ae3 | 3627 | } /* End \N{NAME} */ |
ff3f963a KW |
3628 | #ifdef EBCDIC |
3629 | if (!dorange) | |
3630 | native_range = FALSE; /* \N{} is defined to be Unicode */ | |
3631 | #endif | |
3632 | s = e + 1; /* Point to just after the '}' */ | |
423cee85 JH |
3633 | continue; |
3634 | ||
02aa26ce | 3635 | /* \c is a control character */ |
79072805 LW |
3636 | case 'c': |
3637 | s++; | |
961ce445 | 3638 | if (s < send) { |
17a3df4c | 3639 | *d++ = grok_bslash_c(*s++, has_utf8, 1); |
ba210ebe | 3640 | } |
961ce445 RGS |
3641 | else { |
3642 | yyerror("Missing control char name in \\c"); | |
3643 | } | |
79072805 | 3644 | continue; |
02aa26ce NT |
3645 | |
3646 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 3647 | case 'b': |
db42d148 | 3648 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
3649 | break; |
3650 | case 'n': | |
db42d148 | 3651 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
3652 | break; |
3653 | case 'r': | |
db42d148 | 3654 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
3655 | break; |
3656 | case 'f': | |
db42d148 | 3657 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
3658 | break; |
3659 | case 't': | |
db42d148 | 3660 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 3661 | break; |
34a3fe2a | 3662 | case 'e': |
db42d148 | 3663 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
3664 | break; |
3665 | case 'a': | |
db42d148 | 3666 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 3667 | break; |
02aa26ce NT |
3668 | } /* end switch */ |
3669 | ||
79072805 LW |
3670 | s++; |
3671 | continue; | |
02aa26ce | 3672 | } /* end if (backslash) */ |
4c3a8340 TS |
3673 | #ifdef EBCDIC |
3674 | else | |
3675 | literal_endpoint++; | |
3676 | #endif | |
02aa26ce | 3677 | |
f9a63242 | 3678 | default_action: |
77a135fe KW |
3679 | /* If we started with encoded form, or already know we want it, |
3680 | then encode the next character */ | |
3681 | if (! NATIVE_IS_INVARIANT((U8)(*s)) && (this_utf8 || has_utf8)) { | |
2b9d42f0 | 3682 | STRLEN len = 1; |
77a135fe KW |
3683 | |
3684 | ||
3685 | /* One might think that it is wasted effort in the case of the | |
3686 | * source being utf8 (this_utf8 == TRUE) to take the next character | |
3687 | * in the source, convert it to an unsigned value, and then convert | |
3688 | * it back again. But the source has not been validated here. The | |
3689 | * routine that does the conversion checks for errors like | |
3690 | * malformed utf8 */ | |
3691 | ||
5f66b61c AL |
3692 | const UV nextuv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); |
3693 | const STRLEN need = UNISKIP(NATIVE_TO_UNI(nextuv)); | |
77a135fe KW |
3694 | if (!has_utf8) { |
3695 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3696 | SvPOK_on(sv); | |
3697 | *d = '\0'; | |
77a135fe | 3698 | /* See Note on sizing above. */ |
7bf79863 KW |
3699 | sv_utf8_upgrade_flags_grow(sv, |
3700 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3701 | need + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3702 | d = SvPVX(sv) + SvCUR(sv); |
3703 | has_utf8 = TRUE; | |
3704 | } else if (need > len) { | |
3705 | /* encoded value larger than old, may need extra space (NOTE: | |
3706 | * SvCUR() is not set correctly here). See Note on sizing | |
3707 | * above. */ | |
9d4ba2ae | 3708 | const STRLEN off = d - SvPVX_const(sv); |
77a135fe | 3709 | d = SvGROW(sv, off + need + (STRLEN)(send - s) + 1) + off; |
2b9d42f0 | 3710 | } |
77a135fe KW |
3711 | s += len; |
3712 | ||
5f66b61c | 3713 | d = (char*)uvchr_to_utf8((U8*)d, nextuv); |
e294cc5d JH |
3714 | #ifdef EBCDIC |
3715 | if (uv > 255 && !dorange) | |
3716 | native_range = FALSE; | |
3717 | #endif | |
2b9d42f0 NIS |
3718 | } |
3719 | else { | |
3720 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
3721 | } | |
02aa26ce NT |
3722 | } /* while loop to process each character */ |
3723 | ||
3724 | /* terminate the string and set up the sv */ | |
79072805 | 3725 | *d = '\0'; |
95a20fc0 | 3726 | SvCUR_set(sv, d - SvPVX_const(sv)); |
2b9d42f0 | 3727 | if (SvCUR(sv) >= SvLEN(sv)) |
5637ef5b NC |
3728 | Perl_croak(aTHX_ "panic: constant overflowed allocated space, %"UVuf |
3729 | " >= %"UVuf, (UV)SvCUR(sv), (UV)SvLEN(sv)); | |
2b9d42f0 | 3730 | |
79072805 | 3731 | SvPOK_on(sv); |
9f4817db | 3732 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
3733 | sv_recode_to_utf8(sv, PL_encoding); |
3734 | if (SvUTF8(sv)) | |
3735 | has_utf8 = TRUE; | |
9f4817db | 3736 | } |
2b9d42f0 | 3737 | if (has_utf8) { |
7e2040f0 | 3738 | SvUTF8_on(sv); |
2b9d42f0 | 3739 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 3740 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
3741 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
3742 | } | |
3743 | } | |
79072805 | 3744 | |
02aa26ce | 3745 | /* shrink the sv if we allocated more than we used */ |
79072805 | 3746 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1da4ca5f | 3747 | SvPV_shrink_to_cur(sv); |
79072805 | 3748 | } |
02aa26ce | 3749 | |
6154021b | 3750 | /* return the substring (via pl_yylval) only if we parsed anything */ |
3280af22 | 3751 | if (s > PL_bufptr) { |
b899e89d | 3752 | SvREFCNT_inc_simple_void_NN(sv); |
eb0d8d16 NC |
3753 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) { |
3754 | const char *const key = PL_lex_inpat ? "qr" : "q"; | |
3755 | const STRLEN keylen = PL_lex_inpat ? 2 : 1; | |
3756 | const char *type; | |
3757 | STRLEN typelen; | |
3758 | ||
3759 | if (PL_lex_inwhat == OP_TRANS) { | |
3760 | type = "tr"; | |
3761 | typelen = 2; | |
3762 | } else if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) { | |
3763 | type = "s"; | |
3764 | typelen = 1; | |
9da1dd8f DM |
3765 | } else if (PL_lex_inpat && SvIVX(PL_linestr) == '\'') { |
3766 | type = "q"; | |
3767 | typelen = 1; | |
eb0d8d16 NC |
3768 | } else { |
3769 | type = "qq"; | |
3770 | typelen = 2; | |
3771 | } | |
3772 | ||
3773 | sv = S_new_constant(aTHX_ start, s - start, key, keylen, sv, NULL, | |
3774 | type, typelen); | |
3775 | } | |
6154021b | 3776 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b899e89d FC |
3777 | } |
3778 | LEAVE_with_name("scan_const"); | |
79072805 LW |
3779 | return s; |
3780 | } | |
3781 | ||
ffb4593c NT |
3782 | /* S_intuit_more |
3783 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
3784 | * FALSE otherwise. | |
ffb4593c NT |
3785 | * |
3786 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
3787 | * | |
3788 | * ->[ and ->{ return TRUE | |
3789 | * { and [ outside a pattern are always subscripts, so return TRUE | |
3790 | * if we're outside a pattern and it's not { or [, then return FALSE | |
3791 | * if we're in a pattern and the first char is a { | |
3792 | * {4,5} (any digits around the comma) returns FALSE | |
3793 | * if we're in a pattern and the first char is a [ | |
3794 | * [] returns FALSE | |
3795 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
3796 | * character class or not. It has to deal with things like | |
3797 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
3798 | * anything else returns TRUE | |
3799 | */ | |
3800 | ||
9cbb5ea2 GS |
3801 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
3802 | ||
76e3520e | 3803 | STATIC int |
5aaab254 | 3804 | S_intuit_more(pTHX_ char *s) |
79072805 | 3805 | { |
97aff369 | 3806 | dVAR; |
7918f24d NC |
3807 | |
3808 | PERL_ARGS_ASSERT_INTUIT_MORE; | |
3809 | ||
3280af22 | 3810 | if (PL_lex_brackets) |
79072805 LW |
3811 | return TRUE; |
3812 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
3813 | return TRUE; | |
3814 | if (*s != '{' && *s != '[') | |
3815 | return FALSE; | |
3280af22 | 3816 | if (!PL_lex_inpat) |
79072805 LW |
3817 | return TRUE; |
3818 | ||
3819 | /* In a pattern, so maybe we have {n,m}. */ | |
3820 | if (*s == '{') { | |
4d68ffa0 | 3821 | if (regcurly(s, FALSE)) { |
79072805 | 3822 | return FALSE; |
b3155d95 | 3823 | } |
79072805 | 3824 | return TRUE; |
79072805 LW |
3825 | } |
3826 | ||
3827 | /* On the other hand, maybe we have a character class */ | |
3828 | ||
3829 | s++; | |
3830 | if (*s == ']' || *s == '^') | |
3831 | return FALSE; | |
3832 | else { | |
ffb4593c | 3833 | /* this is terrifying, and it works */ |
99f2bdb7 | 3834 | int weight; |
79072805 | 3835 | char seen[256]; |
9d4ba2ae | 3836 | const char * const send = strchr(s,']'); |
99f2bdb7 | 3837 | unsigned char un_char, last_un_char; |
3280af22 | 3838 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
3839 | |
3840 | if (!send) /* has to be an expression */ | |
3841 | return TRUE; | |
99f2bdb7 | 3842 | weight = 2; /* let's weigh the evidence */ |
79072805 | 3843 | |
79072805 LW |
3844 | if (*s == '$') |
3845 | weight -= 3; | |
3846 | else if (isDIGIT(*s)) { | |
3847 | if (s[1] != ']') { | |
3848 | if (isDIGIT(s[1]) && s[2] == ']') | |
3849 | weight -= 10; | |
3850 | } | |
3851 | else | |
3852 | weight -= 100; | |
3853 | } | |
99f2bdb7 DD |
3854 | Zero(seen,256,char); |
3855 | un_char = 255; | |
79072805 LW |
3856 | for (; s < send; s++) { |
3857 | last_un_char = un_char; | |
3858 | un_char = (unsigned char)*s; | |
3859 | switch (*s) { | |
3860 | case '@': | |
3861 | case '&': | |
3862 | case '$': | |
3863 | weight -= seen[un_char] * 10; | |
8a2bca12 | 3864 | if (isWORDCHAR_lazy_if(s+1,UTF)) { |
90e5519e | 3865 | int len; |
8903cb82 | 3866 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
90e5519e | 3867 | len = (int)strlen(tmpbuf); |
6fbd0d97 BF |
3868 | if (len > 1 && gv_fetchpvn_flags(tmpbuf, len, |
3869 | UTF ? SVf_UTF8 : 0, SVt_PV)) | |
79072805 LW |
3870 | weight -= 100; |
3871 | else | |
3872 | weight -= 10; | |
3873 | } | |
3874 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
3875 | strchr("[#!%*<>()-=",s[1])) { |
3876 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
3877 | weight -= 10; |
3878 | else | |
3879 | weight -= 1; | |
3880 | } | |
3881 | break; | |
3882 | case '\\': | |
3883 | un_char = 254; | |
3884 | if (s[1]) { | |
93a17b20 | 3885 | if (strchr("wds]",s[1])) |
79072805 | 3886 | weight += 100; |
10edeb5d | 3887 | else if (seen[(U8)'\''] || seen[(U8)'"']) |
79072805 | 3888 | weight += 1; |
93a17b20 | 3889 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
3890 | weight += 40; |
3891 | else if (isDIGIT(s[1])) { | |
3892 | weight += 40; | |
3893 | while (s[1] && isDIGIT(s[1])) | |
3894 | s++; | |
3895 | } | |
3896 | } | |
3897 | else | |
3898 | weight += 100; | |
3899 | break; | |
3900 | case '-': | |
3901 | if (s[1] == '\\') | |
3902 | weight += 50; | |
93a17b20 | 3903 | if (strchr("aA01! ",last_un_char)) |
79072805 | 3904 | weight += 30; |
93a17b20 | 3905 | if (strchr("zZ79~",s[1])) |
79072805 | 3906 | weight += 30; |
f27ffc4a GS |
3907 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
3908 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
3909 | break; |
3910 | default: | |
0eb30aeb | 3911 | if (!isWORDCHAR(last_un_char) |
3792a11b NC |
3912 | && !(last_un_char == '$' || last_un_char == '@' |
3913 | || last_un_char == '&') | |
3914 | && isALPHA(*s) && s[1] && isALPHA(s[1])) { | |
79072805 LW |
3915 | char *d = tmpbuf; |
3916 | while (isALPHA(*s)) | |
3917 | *d++ = *s++; | |
3918 | *d = '\0'; | |
5458a98a | 3919 | if (keyword(tmpbuf, d - tmpbuf, 0)) |
79072805 LW |
3920 | weight -= 150; |
3921 | } | |
3922 | if (un_char == last_un_char + 1) | |
3923 | weight += 5; | |
3924 | weight -= seen[un_char]; | |
3925 | break; | |
3926 | } | |
3927 | seen[un_char]++; | |
3928 | } | |
3929 | if (weight >= 0) /* probably a character class */ | |
3930 | return FALSE; | |
3931 | } | |
3932 | ||
3933 | return TRUE; | |
3934 | } | |
ffed7fef | 3935 | |
ffb4593c NT |
3936 | /* |
3937 | * S_intuit_method | |
3938 | * | |
3939 | * Does all the checking to disambiguate | |
3940 | * foo bar | |
3941 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
3942 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
3943 | * | |
3944 | * First argument is the stuff after the first token, e.g. "bar". | |
3945 | * | |
a4fd4a89 | 3946 | * Not a method if foo is a filehandle. |
ffb4593c NT |
3947 | * Not a method if foo is a subroutine prototyped to take a filehandle. |
3948 | * Not a method if it's really "Foo $bar" | |
3949 | * Method if it's "foo $bar" | |
3950 | * Not a method if it's really "print foo $bar" | |
3951 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 3952 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 3953 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
3954 | * => |
3955 | */ | |
3956 | ||
76e3520e | 3957 | STATIC int |
62d55b22 | 3958 | S_intuit_method(pTHX_ char *start, GV *gv, CV *cv) |
a0d0e21e | 3959 | { |
97aff369 | 3960 | dVAR; |
a0d0e21e | 3961 | char *s = start + (*start == '$'); |
3280af22 | 3962 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3963 | STRLEN len; |
3964 | GV* indirgv; | |
5db06880 NC |
3965 | #ifdef PERL_MAD |
3966 | int soff; | |
3967 | #endif | |
a0d0e21e | 3968 | |
7918f24d NC |
3969 | PERL_ARGS_ASSERT_INTUIT_METHOD; |
3970 | ||
aca88b25 | 3971 | if (gv && SvTYPE(gv) == SVt_PVGV && GvIO(gv)) |
a0d0e21e | 3972 | return 0; |
aca88b25 | 3973 | if (cv && SvPOK(cv)) { |
8fa6a409 | 3974 | const char *proto = CvPROTO(cv); |
62d55b22 NC |
3975 | if (proto) { |
3976 | if (*proto == ';') | |
3977 | proto++; | |
3978 | if (*proto == '*') | |
3979 | return 0; | |
3980 | } | |
a0d0e21e | 3981 | } |
8903cb82 | 3982 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
3983 | /* start is the beginning of the possible filehandle/object, |
3984 | * and s is the end of it | |
3985 | * tmpbuf is a copy of it | |
3986 | */ | |
3987 | ||
a0d0e21e | 3988 | if (*start == '$') { |
39c012bc | 3989 | if (cv || PL_last_lop_op == OP_PRINT || PL_last_lop_op == OP_SAY || |
3ef1310e | 3990 | isUPPER(*PL_tokenbuf)) |
a0d0e21e | 3991 | return 0; |
5db06880 NC |
3992 | #ifdef PERL_MAD |
3993 | len = start - SvPVX(PL_linestr); | |
3994 | #endif | |
29595ff2 | 3995 | s = PEEKSPACE(s); |
f0092767 | 3996 | #ifdef PERL_MAD |
5db06880 NC |
3997 | start = SvPVX(PL_linestr) + len; |
3998 | #endif | |
3280af22 NIS |
3999 | PL_bufptr = start; |
4000 | PL_expect = XREF; | |
a0d0e21e LW |
4001 | return *s == '(' ? FUNCMETH : METHOD; |
4002 | } | |
5458a98a | 4003 | if (!keyword(tmpbuf, len, 0)) { |
c3e0f903 GS |
4004 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
4005 | len -= 2; | |
4006 | tmpbuf[len] = '\0'; | |
5db06880 NC |
4007 | #ifdef PERL_MAD |
4008 | soff = s - SvPVX(PL_linestr); | |
4009 | #endif | |
c3e0f903 GS |
4010 | goto bare_package; |
4011 | } | |
38d2cf30 | 4012 | indirgv = gv_fetchpvn_flags(tmpbuf, len, ( UTF ? SVf_UTF8 : 0 ), SVt_PVCV); |
8ebc5c01 | 4013 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
4014 | return 0; |
4015 | /* filehandle or package name makes it a method */ | |
39c012bc | 4016 | if (!cv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, UTF ? SVf_UTF8 : 0)) { |
5db06880 NC |
4017 | #ifdef PERL_MAD |
4018 | soff = s - SvPVX(PL_linestr); | |
4019 | #endif | |
29595ff2 | 4020 | s = PEEKSPACE(s); |
3280af22 | 4021 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
486ec47a | 4022 | return 0; /* no assumptions -- "=>" quotes bareword */ |
c3e0f903 | 4023 | bare_package: |
cd81e915 | 4024 | start_force(PL_curforce); |
9ded7720 | 4025 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, |
64142370 | 4026 | S_newSV_maybe_utf8(aTHX_ tmpbuf, len)); |
9ded7720 | 4027 | NEXTVAL_NEXTTOKE.opval->op_private = OPpCONST_BARE; |
5db06880 | 4028 | if (PL_madskills) |
38d2cf30 BF |
4029 | curmad('X', newSVpvn_flags(start,SvPVX(PL_linestr) + soff - start, |
4030 | ( UTF ? SVf_UTF8 : 0 ))); | |
3280af22 | 4031 | PL_expect = XTERM; |
a0d0e21e | 4032 | force_next(WORD); |
3280af22 | 4033 | PL_bufptr = s; |
5db06880 NC |
4034 | #ifdef PERL_MAD |
4035 | PL_bufptr = SvPVX(PL_linestr) + soff; /* restart before space */ | |
4036 | #endif | |
a0d0e21e LW |
4037 | return *s == '(' ? FUNCMETH : METHOD; |
4038 | } | |
4039 | } | |
4040 | return 0; | |
4041 | } | |
4042 | ||
16d20bd9 | 4043 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 4044 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
4045 | * Note that the filter function only applies to the current source file |
4046 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
4047 | * | |
4048 | * The datasv parameter (which may be NULL) can be used to pass | |
4049 | * private data to this instance of the filter. The filter function | |
4050 | * can recover the SV using the FILTER_DATA macro and use it to | |
4051 | * store private buffers and state information. | |
4052 | * | |
4053 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 4054 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 4055 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
4056 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
4057 | * private use must be set using malloc'd pointers. | |
4058 | */ | |
16d20bd9 AD |
4059 | |
4060 | SV * | |
864dbfa3 | 4061 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 4062 | { |
97aff369 | 4063 | dVAR; |
f4c556ac | 4064 | if (!funcp) |
a0714e2c | 4065 | return NULL; |
f4c556ac | 4066 | |
5486870f DM |
4067 | if (!PL_parser) |
4068 | return NULL; | |
4069 | ||
f1c31c52 FC |
4070 | if (PL_parser->lex_flags & LEX_IGNORE_UTF8_HINTS) |
4071 | Perl_croak(aTHX_ "Source filters apply only to byte streams"); | |
4072 | ||
3280af22 NIS |
4073 | if (!PL_rsfp_filters) |
4074 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 4075 | if (!datasv) |
561b68a9 | 4076 | datasv = newSV(0); |
862a34c6 | 4077 | SvUPGRADE(datasv, SVt_PVIO); |
8141890a | 4078 | IoANY(datasv) = FPTR2DPTR(void *, funcp); /* stash funcp into spare field */ |
e0c19803 | 4079 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 4080 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
55662e27 JH |
4081 | FPTR2DPTR(void *, IoANY(datasv)), |
4082 | SvPV_nolen(datasv))); | |
3280af22 NIS |
4083 | av_unshift(PL_rsfp_filters, 1); |
4084 | av_store(PL_rsfp_filters, 0, datasv) ; | |
60d63348 FC |
4085 | if ( |
4086 | !PL_parser->filtered | |
4087 | && PL_parser->lex_flags & LEX_EVALBYTES | |
4088 | && PL_bufptr < PL_bufend | |
4089 | ) { | |
4090 | const char *s = PL_bufptr; | |
4091 | while (s < PL_bufend) { | |
4092 | if (*s == '\n') { | |
4093 | SV *linestr = PL_parser->linestr; | |
4094 | char *buf = SvPVX(linestr); | |
4095 | STRLEN const bufptr_pos = PL_parser->bufptr - buf; | |
4096 | STRLEN const oldbufptr_pos = PL_parser->oldbufptr - buf; | |
4097 | STRLEN const oldoldbufptr_pos=PL_parser->oldoldbufptr-buf; | |
4098 | STRLEN const linestart_pos = PL_parser->linestart - buf; | |
4099 | STRLEN const last_uni_pos = | |
4100 | PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
4101 | STRLEN const last_lop_pos = | |
4102 | PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
4103 | av_push(PL_rsfp_filters, linestr); | |
4104 | PL_parser->linestr = | |
4105 | newSVpvn(SvPVX(linestr), ++s-SvPVX(linestr)); | |
4106 | buf = SvPVX(PL_parser->linestr); | |
4107 | PL_parser->bufend = buf + SvCUR(PL_parser->linestr); | |
4108 | PL_parser->bufptr = buf + bufptr_pos; | |
4109 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
4110 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
4111 | PL_parser->linestart = buf + linestart_pos; | |
4112 | if (PL_parser->last_uni) | |
4113 | PL_parser->last_uni = buf + last_uni_pos; | |
4114 | if (PL_parser->last_lop) | |
4115 | PL_parser->last_lop = buf + last_lop_pos; | |
4116 | SvLEN(linestr) = SvCUR(linestr); | |
4117 | SvCUR(linestr) = s-SvPVX(linestr); | |
4118 | PL_parser->filtered = 1; | |
4119 | break; | |
4120 | } | |
4121 | s++; | |
4122 | } | |
4123 | } | |
16d20bd9 AD |
4124 | return(datasv); |
4125 | } | |
4e553d73 | 4126 | |
16d20bd9 AD |
4127 | |
4128 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 4129 | void |
864dbfa3 | 4130 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 4131 | { |
97aff369 | 4132 | dVAR; |
e0c19803 | 4133 | SV *datasv; |
24801a4b | 4134 | |
7918f24d NC |
4135 | PERL_ARGS_ASSERT_FILTER_DEL; |
4136 | ||
33073adb | 4137 | #ifdef DEBUGGING |
55662e27 JH |
4138 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", |
4139 | FPTR2DPTR(void*, funcp))); | |
33073adb | 4140 | #endif |
5486870f | 4141 | if (!PL_parser || !PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
4142 | return; |
4143 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 4144 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
8141890a | 4145 | if (IoANY(datasv) == FPTR2DPTR(void *, funcp)) { |
3280af22 | 4146 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 4147 | |
16d20bd9 AD |
4148 | return; |
4149 | } | |
4150 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 4151 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
4152 | } |
4153 | ||
4154 | ||
1de9afcd RGS |
4155 | /* Invoke the idxth filter function for the current rsfp. */ |
4156 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 4157 | I32 |
864dbfa3 | 4158 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 4159 | { |
97aff369 | 4160 | dVAR; |
16d20bd9 AD |
4161 | filter_t funcp; |
4162 | SV *datasv = NULL; | |
f482118e NC |
4163 | /* This API is bad. It should have been using unsigned int for maxlen. |
4164 | Not sure if we want to change the API, but if not we should sanity | |
4165 | check the value here. */ | |
60d63348 | 4166 | unsigned int correct_length |
39cd7a59 NC |
4167 | = maxlen < 0 ? |
4168 | #ifdef PERL_MICRO | |
4169 | 0x7FFFFFFF | |
4170 | #else | |
4171 | INT_MAX | |
4172 | #endif | |
4173 | : maxlen; | |
e50aee73 | 4174 | |
7918f24d NC |
4175 | PERL_ARGS_ASSERT_FILTER_READ; |
4176 | ||
5486870f | 4177 | if (!PL_parser || !PL_rsfp_filters) |
16d20bd9 | 4178 | return -1; |
1de9afcd | 4179 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
4180 | /* Provide a default input filter to make life easy. */ |
4181 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
4182 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4183 | "filter_read %d: from rsfp\n", idx)); | |
f482118e | 4184 | if (correct_length) { |
16d20bd9 AD |
4185 | /* Want a block */ |
4186 | int len ; | |
f54cb97a | 4187 | const int old_len = SvCUR(buf_sv); |
16d20bd9 AD |
4188 | |
4189 | /* ensure buf_sv is large enough */ | |
881d8f0a | 4190 | SvGROW(buf_sv, (STRLEN)(old_len + correct_length + 1)) ; |
f482118e NC |
4191 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, |
4192 | correct_length)) <= 0) { | |
3280af22 | 4193 | if (PerlIO_error(PL_rsfp)) |
37120919 AD |
4194 | return -1; /* error */ |
4195 | else | |
4196 | return 0 ; /* end of file */ | |
4197 | } | |
16d20bd9 | 4198 | SvCUR_set(buf_sv, old_len + len) ; |
881d8f0a | 4199 | SvPVX(buf_sv)[old_len + len] = '\0'; |
16d20bd9 AD |
4200 | } else { |
4201 | /* Want a line */ | |
3280af22 NIS |
4202 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
4203 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
4204 | return -1; /* error */ |
4205 | else | |
4206 | return 0 ; /* end of file */ | |
4207 | } | |
16d20bd9 AD |
4208 | } |
4209 | return SvCUR(buf_sv); | |
4210 | } | |
4211 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 4212 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
4213 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4214 | "filter_read %d: skipped (filter deleted)\n", | |
4215 | idx)); | |
f482118e | 4216 | return FILTER_READ(idx+1, buf_sv, correct_length); /* recurse */ |
16d20bd9 | 4217 | } |
60d63348 FC |
4218 | if (SvTYPE(datasv) != SVt_PVIO) { |
4219 | if (correct_length) { | |
4220 | /* Want a block */ | |
4221 | const STRLEN remainder = SvLEN(datasv) - SvCUR(datasv); | |
4222 | if (!remainder) return 0; /* eof */ | |
4223 | if (correct_length > remainder) correct_length = remainder; | |
4224 | sv_catpvn(buf_sv, SvEND(datasv), correct_length); | |
4225 | SvCUR_set(datasv, SvCUR(datasv) + correct_length); | |
4226 | } else { | |
4227 | /* Want a line */ | |
4228 | const char *s = SvEND(datasv); | |
4229 | const char *send = SvPVX(datasv) + SvLEN(datasv); | |
4230 | while (s < send) { | |
4231 | if (*s == '\n') { | |
4232 | s++; | |
4233 | break; | |
4234 | } | |
4235 | s++; | |
4236 | } | |
4237 | if (s == send) return 0; /* eof */ | |
4238 | sv_catpvn(buf_sv, SvEND(datasv), s-SvEND(datasv)); | |
4239 | SvCUR_set(datasv, s-SvPVX(datasv)); | |
4240 | } | |
4241 | return SvCUR(buf_sv); | |
4242 | } | |
16d20bd9 | 4243 | /* Get function pointer hidden within datasv */ |
8141890a | 4244 | funcp = DPTR2FPTR(filter_t, IoANY(datasv)); |
f4c556ac GS |
4245 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4246 | "filter_read %d: via function %p (%s)\n", | |
ca0270c4 | 4247 | idx, (void*)datasv, SvPV_nolen_const(datasv))); |
16d20bd9 AD |
4248 | /* Call function. The function is expected to */ |
4249 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 4250 | /* Return: <0:error, =0:eof, >0:not eof */ |
f482118e | 4251 | return (*funcp)(aTHX_ idx, buf_sv, correct_length); |
16d20bd9 AD |
4252 | } |
4253 | ||
76e3520e | 4254 | STATIC char * |
5aaab254 | 4255 | S_filter_gets(pTHX_ SV *sv, STRLEN append) |
16d20bd9 | 4256 | { |
97aff369 | 4257 | dVAR; |
7918f24d NC |
4258 | |
4259 | PERL_ARGS_ASSERT_FILTER_GETS; | |
4260 | ||
c39cd008 | 4261 | #ifdef PERL_CR_FILTER |
3280af22 | 4262 | if (!PL_rsfp_filters) { |
c39cd008 | 4263 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
4264 | } |
4265 | #endif | |
3280af22 | 4266 | if (PL_rsfp_filters) { |
55497cff | 4267 | if (!append) |
4268 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
4269 | if (FILTER_READ(0, sv, 0) > 0) |
4270 | return ( SvPVX(sv) ) ; | |
4271 | else | |
bd61b366 | 4272 | return NULL ; |
16d20bd9 | 4273 | } |
9d116dd7 | 4274 | else |
5cc814fd | 4275 | return (sv_gets(sv, PL_rsfp, append)); |
a0d0e21e LW |
4276 | } |
4277 | ||
01ec43d0 | 4278 | STATIC HV * |
9bde8eb0 | 4279 | S_find_in_my_stash(pTHX_ const char *pkgname, STRLEN len) |
def3634b | 4280 | { |
97aff369 | 4281 | dVAR; |
def3634b GS |
4282 | GV *gv; |
4283 | ||
7918f24d NC |
4284 | PERL_ARGS_ASSERT_FIND_IN_MY_STASH; |
4285 | ||
01ec43d0 | 4286 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
4287 | return PL_curstash; |
4288 | ||
4289 | if (len > 2 && | |
4290 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
acc6da14 | 4291 | (gv = gv_fetchpvn_flags(pkgname, len, ( UTF ? SVf_UTF8 : 0 ), SVt_PVHV))) |
01ec43d0 GS |
4292 | { |
4293 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
4294 | } |
4295 | ||
4296 | /* use constant CLASS => 'MyClass' */ | |
acc6da14 | 4297 | gv = gv_fetchpvn_flags(pkgname, len, UTF ? SVf_UTF8 : 0, SVt_PVCV); |
c35e046a AL |
4298 | if (gv && GvCV(gv)) { |
4299 | SV * const sv = cv_const_sv(GvCV(gv)); | |
4300 | if (sv) | |
9bde8eb0 | 4301 | pkgname = SvPV_const(sv, len); |
def3634b GS |
4302 | } |
4303 | ||
acc6da14 | 4304 | return gv_stashpvn(pkgname, len, UTF ? SVf_UTF8 : 0); |
def3634b | 4305 | } |
a0d0e21e | 4306 | |
e3f73d4e RGS |
4307 | /* |
4308 | * S_readpipe_override | |
486ec47a | 4309 | * Check whether readpipe() is overridden, and generates the appropriate |
e3f73d4e RGS |
4310 | * optree, provided sublex_start() is called afterwards. |
4311 | */ | |
4312 | STATIC void | |
1d51329b | 4313 | S_readpipe_override(pTHX) |
e3f73d4e RGS |
4314 | { |
4315 | GV **gvp; | |
4316 | GV *gv_readpipe = gv_fetchpvs("readpipe", GV_NOTQUAL, SVt_PVCV); | |
6154021b | 4317 | pl_yylval.ival = OP_BACKTICK; |
e3f73d4e RGS |
4318 | if ((gv_readpipe |
4319 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe)) | |
4320 | || | |
4321 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readpipe", FALSE)) | |
d5e716f5 | 4322 | && (gv_readpipe = *gvp) && isGV_with_GP(gv_readpipe) |
e3f73d4e RGS |
4323 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe))) |
4324 | { | |
4325 | PL_lex_op = (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 4326 | op_append_elem(OP_LIST, |
e3f73d4e RGS |
4327 | newSVOP(OP_CONST, 0, &PL_sv_undef), /* value will be read later */ |
4328 | newCVREF(0, newGVOP(OP_GV, 0, gv_readpipe)))); | |
4329 | } | |
e3f73d4e RGS |
4330 | } |
4331 | ||
5db06880 NC |
4332 | #ifdef PERL_MAD |
4333 | /* | |
4334 | * Perl_madlex | |
4335 | * The intent of this yylex wrapper is to minimize the changes to the | |
4336 | * tokener when we aren't interested in collecting madprops. It remains | |
4337 | * to be seen how successful this strategy will be... | |
4338 | */ | |
4339 | ||
4340 | int | |
4341 | Perl_madlex(pTHX) | |
4342 | { | |
4343 | int optype; | |
4344 | char *s = PL_bufptr; | |
4345 | ||
cd81e915 NC |
4346 | /* make sure PL_thiswhite is initialized */ |
4347 | PL_thiswhite = 0; | |
4348 | PL_thismad = 0; | |
5db06880 | 4349 | |
5db06880 | 4350 | /* previous token ate up our whitespace? */ |
cd81e915 NC |
4351 | if (!PL_lasttoke && PL_nextwhite) { |
4352 | PL_thiswhite = PL_nextwhite; | |
4353 | PL_nextwhite = 0; | |
5db06880 NC |
4354 | } |
4355 | ||
4356 | /* isolate the token, and figure out where it is without whitespace */ | |
cd81e915 NC |
4357 | PL_realtokenstart = -1; |
4358 | PL_thistoken = 0; | |
5db06880 NC |
4359 | optype = yylex(); |
4360 | s = PL_bufptr; | |
cd81e915 | 4361 | assert(PL_curforce < 0); |
5db06880 | 4362 | |
cd81e915 NC |
4363 | if (!PL_thismad || PL_thismad->mad_key == '^') { /* not forced already? */ |
4364 | if (!PL_thistoken) { | |
4365 | if (PL_realtokenstart < 0 || !CopLINE(PL_curcop)) | |
6b29d1f5 | 4366 | PL_thistoken = newSVpvs(""); |
5db06880 | 4367 | else { |
c35e046a | 4368 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 | 4369 | PL_thistoken = newSVpvn(tstart, s - tstart); |
5db06880 NC |
4370 | } |
4371 | } | |
cd81e915 NC |
4372 | if (PL_thismad) /* install head */ |
4373 | CURMAD('X', PL_thistoken); | |
5db06880 NC |
4374 | } |
4375 | ||
4376 | /* last whitespace of a sublex? */ | |
cd81e915 NC |
4377 | if (optype == ')' && PL_endwhite) { |
4378 | CURMAD('X', PL_endwhite); | |
5db06880 NC |
4379 | } |
4380 | ||
cd81e915 | 4381 | if (!PL_thismad) { |
5db06880 NC |
4382 | |
4383 | /* if no whitespace and we're at EOF, bail. Otherwise fake EOF below. */ | |
cd81e915 NC |
4384 | if (!PL_thiswhite && !PL_endwhite && !optype) { |
4385 | sv_free(PL_thistoken); | |
4386 | PL_thistoken = 0; | |
5db06880 NC |
4387 | return 0; |
4388 | } | |
4389 | ||
4390 | /* put off final whitespace till peg */ | |
60d63348 | 4391 | if (optype == ';' && !PL_rsfp && !PL_parser->filtered) { |
cd81e915 NC |
4392 | PL_nextwhite = PL_thiswhite; |
4393 | PL_thiswhite = 0; | |
5db06880 | 4394 | } |
cd81e915 NC |
4395 | else if (PL_thisopen) { |
4396 | CURMAD('q', PL_thisopen); | |
4397 | if (PL_thistoken) | |
4398 | sv_free(PL_thistoken); | |
4399 | PL_thistoken = 0; | |
5db06880 NC |
4400 | } |
4401 | else { | |
4402 | /* Store actual token text as madprop X */ | |
cd81e915 | 4403 | CURMAD('X', PL_thistoken); |
5db06880 NC |
4404 | } |
4405 | ||
cd81e915 | 4406 | if (PL_thiswhite) { |
5db06880 | 4407 | /* add preceding whitespace as madprop _ */ |
cd81e915 | 4408 | CURMAD('_', PL_thiswhite); |
5db06880 NC |
4409 | } |
4410 | ||
cd81e915 | 4411 | if (PL_thisstuff) { |
5db06880 | 4412 | /* add quoted material as madprop = */ |
cd81e915 | 4413 | CURMAD('=', PL_thisstuff); |
5db06880 NC |
4414 | } |
4415 | ||
cd81e915 | 4416 | if (PL_thisclose) { |
5db06880 | 4417 | /* add terminating quote as madprop Q */ |
cd81e915 | 4418 | CURMAD('Q', PL_thisclose); |
5db06880 NC |
4419 | } |
4420 | } | |
4421 | ||
4422 | /* special processing based on optype */ | |
4423 | ||
4424 | switch (optype) { | |
4425 | ||
4426 | /* opval doesn't need a TOKEN since it can already store mp */ | |
4427 | case WORD: | |
4428 | case METHOD: | |
4429 | case FUNCMETH: | |
4430 | case THING: | |
4431 | case PMFUNC: | |
4432 | case PRIVATEREF: | |
4433 | case FUNC0SUB: | |
4434 | case UNIOPSUB: | |
4435 | case LSTOPSUB: | |
6154021b RGS |
4436 | if (pl_yylval.opval) |
4437 | append_madprops(PL_thismad, pl_yylval.opval, 0); | |
cd81e915 | 4438 | PL_thismad = 0; |
5db06880 NC |
4439 | return optype; |
4440 | ||
4441 | /* fake EOF */ | |
4442 | case 0: | |
4443 | optype = PEG; | |
cd81e915 NC |
4444 | if (PL_endwhite) { |
4445 | addmad(newMADsv('p', PL_endwhite), &PL_thismad, 0); | |
4446 | PL_endwhite = 0; | |
5db06880 NC |
4447 | } |
4448 | break; | |
4449 | ||
5504e6cf FC |
4450 | /* pval */ |
4451 | case LABEL: | |
4452 | break; | |
4453 | ||
5db06880 NC |
4454 | case ']': |
4455 | case '}': | |
cd81e915 | 4456 | if (PL_faketokens) |
5db06880 NC |
4457 | break; |
4458 | /* remember any fake bracket that lexer is about to discard */ | |
4459 | if (PL_lex_brackets == 1 && | |
4460 | ((expectation)PL_lex_brackstack[0] & XFAKEBRACK)) | |
4461 | { | |
4462 | s = PL_bufptr; | |
4463 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4464 | s++; | |
4465 | if (*s == '}') { | |
cd81e915 NC |
4466 | PL_thiswhite = newSVpvn(PL_bufptr, ++s - PL_bufptr); |
4467 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4468 | PL_thiswhite = 0; | |
5db06880 NC |
4469 | PL_bufptr = s - 1; |
4470 | break; /* don't bother looking for trailing comment */ | |
4471 | } | |
4472 | else | |
4473 | s = PL_bufptr; | |
4474 | } | |
4475 | if (optype == ']') | |
4476 | break; | |
4477 | /* FALLTHROUGH */ | |
4478 | ||
4479 | /* attach a trailing comment to its statement instead of next token */ | |
4480 | case ';': | |
cd81e915 | 4481 | if (PL_faketokens) |
5db06880 NC |
4482 | break; |
4483 | if (PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == optype) { | |
4484 | s = PL_bufptr; | |
4485 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4486 | s++; | |
4487 | if (*s == '\n' || *s == '#') { | |
4488 | while (s < PL_bufend && *s != '\n') | |
4489 | s++; | |
4490 | if (s < PL_bufend) | |
4491 | s++; | |
cd81e915 NC |
4492 | PL_thiswhite = newSVpvn(PL_bufptr, s - PL_bufptr); |
4493 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4494 | PL_thiswhite = 0; | |
5db06880 NC |
4495 | PL_bufptr = s; |
4496 | } | |
4497 | } | |
4498 | break; | |
4499 | ||
5db06880 NC |
4500 | /* ival */ |
4501 | default: | |
4502 | break; | |
4503 | ||
4504 | } | |
4505 | ||
4506 | /* Create new token struct. Note: opvals return early above. */ | |
6154021b | 4507 | pl_yylval.tkval = newTOKEN(optype, pl_yylval, PL_thismad); |
cd81e915 | 4508 | PL_thismad = 0; |
5db06880 NC |
4509 | return optype; |
4510 | } | |
4511 | #endif | |
4512 | ||
468aa647 | 4513 | STATIC char * |
cc6ed77d | 4514 | S_tokenize_use(pTHX_ int is_use, char *s) { |
97aff369 | 4515 | dVAR; |
7918f24d NC |
4516 | |
4517 | PERL_ARGS_ASSERT_TOKENIZE_USE; | |
4518 | ||
468aa647 RGS |
4519 | if (PL_expect != XSTATE) |
4520 | yyerror(Perl_form(aTHX_ "\"%s\" not allowed in expression", | |
4521 | is_use ? "use" : "no")); | |
52d0e95b | 4522 | PL_expect = XTERM; |
29595ff2 | 4523 | s = SKIPSPACE1(s); |
468aa647 RGS |
4524 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
4525 | s = force_version(s, TRUE); | |
17c59fdf VP |
4526 | if (*s == ';' || *s == '}' |
4527 | || (s = SKIPSPACE1(s), (*s == ';' || *s == '}'))) { | |
cd81e915 | 4528 | start_force(PL_curforce); |
9ded7720 | 4529 | NEXTVAL_NEXTTOKE.opval = NULL; |
468aa647 RGS |
4530 | force_next(WORD); |
4531 | } | |
4532 | else if (*s == 'v') { | |
4533 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4534 | s = force_version(s, FALSE); | |
4535 | } | |
4536 | } | |
4537 | else { | |
4538 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4539 | s = force_version(s, FALSE); | |
4540 | } | |
6154021b | 4541 | pl_yylval.ival = is_use; |
468aa647 RGS |
4542 | return s; |
4543 | } | |
748a9306 | 4544 | #ifdef DEBUGGING |
27da23d5 | 4545 | static const char* const exp_name[] = |
09bef843 | 4546 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 4547 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 4548 | }; |
748a9306 | 4549 | #endif |
463ee0b2 | 4550 | |
361d9b55 Z |
4551 | #define word_takes_any_delimeter(p,l) S_word_takes_any_delimeter(p,l) |
4552 | STATIC bool | |
4553 | S_word_takes_any_delimeter(char *p, STRLEN len) | |
4554 | { | |
4555 | return (len == 1 && strchr("msyq", p[0])) || | |
4556 | (len == 2 && ( | |
4557 | (p[0] == 't' && p[1] == 'r') || | |
4558 | (p[0] == 'q' && strchr("qwxr", p[1])))); | |
4559 | } | |
4560 | ||
02aa26ce NT |
4561 | /* |
4562 | yylex | |
4563 | ||
4564 | Works out what to call the token just pulled out of the input | |
4565 | stream. The yacc parser takes care of taking the ops we return and | |
4566 | stitching them into a tree. | |
4567 | ||
4568 | Returns: | |
3875fc11 | 4569 | The type of the next token |
02aa26ce NT |
4570 | |
4571 | Structure: | |
3875fc11 FC |
4572 | Switch based on the current state: |
4573 | - if we already built the token before, use it | |
4574 | - if we have a case modifier in a string, deal with that | |
4575 | - handle other cases of interpolation inside a string | |
4576 | - scan the next line if we are inside a format | |
4577 | In the normal state switch on the next character: | |
4578 | - default: | |
4579 | if alphabetic, go to key lookup | |
4580 | unrecoginized character - croak | |
4581 | - 0/4/26: handle end-of-line or EOF | |
4582 | - cases for whitespace | |
4583 | - \n and #: handle comments and line numbers | |
4584 | - various operators, brackets and sigils | |
4585 | - numbers | |
4586 | - quotes | |
4587 | - 'v': vstrings (or go to key lookup) | |
4588 | - 'x' repetition operator (or go to key lookup) | |
4589 | - other ASCII alphanumerics (key lookup begins here): | |
4590 | word before => ? | |
4591 | keyword plugin | |
4592 | scan built-in keyword (but do nothing with it yet) | |
4593 | check for statement label | |
4594 | check for lexical subs | |
4595 | goto just_a_word if there is one | |
4596 | see whether built-in keyword is overridden | |
4597 | switch on keyword number: | |
4598 | - default: just_a_word: | |
4599 | not a built-in keyword; handle bareword lookup | |
4600 | disambiguate between method and sub call | |
4601 | fall back to bareword | |
4602 | - cases for built-in keywords | |
02aa26ce NT |
4603 | */ |
4604 | ||
20141f0e | 4605 | |
dba4d153 JH |
4606 | #ifdef __SC__ |
4607 | #pragma segment Perl_yylex | |
4608 | #endif | |
dba4d153 | 4609 | int |
dba4d153 | 4610 | Perl_yylex(pTHX) |
20141f0e | 4611 | { |
97aff369 | 4612 | dVAR; |
eb578fdb KW |
4613 | char *s = PL_bufptr; |
4614 | char *d; | |
463ee0b2 | 4615 | STRLEN len; |
705fe0e5 FC |
4616 | bool bof = FALSE; |
4617 | U8 formbrack = 0; | |
580561a3 | 4618 | U32 fake_eof = 0; |
a687059c | 4619 | |
10edeb5d JH |
4620 | /* orig_keyword, gvp, and gv are initialized here because |
4621 | * jump to the label just_a_word_zero can bypass their | |
4622 | * initialization later. */ | |
4623 | I32 orig_keyword = 0; | |
4624 | GV *gv = NULL; | |
4625 | GV **gvp = NULL; | |
4626 | ||
bbf60fe6 | 4627 | DEBUG_T( { |
396482e1 | 4628 | SV* tmp = newSVpvs(""); |
b6007c36 DM |
4629 | PerlIO_printf(Perl_debug_log, "### %"IVdf":LEX_%s/X%s %s\n", |
4630 | (IV)CopLINE(PL_curcop), | |
4631 | lex_state_names[PL_lex_state], | |
4632 | exp_name[PL_expect], | |
4633 | pv_display(tmp, s, strlen(s), 0, 60)); | |
4634 | SvREFCNT_dec(tmp); | |
bbf60fe6 | 4635 | } ); |
02aa26ce | 4636 | |
3280af22 | 4637 | switch (PL_lex_state) { |
79072805 LW |
4638 | #ifdef COMMENTARY |
4639 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
4640 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
4641 | break; | |
4642 | #endif | |
4643 | ||
09bef843 | 4644 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 4645 | case LEX_KNOWNEXT: |
5db06880 NC |
4646 | #ifdef PERL_MAD |
4647 | PL_lasttoke--; | |
6154021b | 4648 | pl_yylval = PL_nexttoke[PL_lasttoke].next_val; |
5db06880 | 4649 | if (PL_madskills) { |
cd81e915 | 4650 | PL_thismad = PL_nexttoke[PL_lasttoke].next_mad; |
5db06880 | 4651 | PL_nexttoke[PL_lasttoke].next_mad = 0; |
cd81e915 | 4652 | if (PL_thismad && PL_thismad->mad_key == '_') { |
daba3364 | 4653 | PL_thiswhite = MUTABLE_SV(PL_thismad->mad_val); |
cd81e915 NC |
4654 | PL_thismad->mad_val = 0; |
4655 | mad_free(PL_thismad); | |
4656 | PL_thismad = 0; | |
5db06880 NC |
4657 | } |
4658 | } | |
4659 | if (!PL_lasttoke) { | |
4660 | PL_lex_state = PL_lex_defer; | |
4661 | PL_expect = PL_lex_expect; | |
4662 | PL_lex_defer = LEX_NORMAL; | |
4663 | if (!PL_nexttoke[PL_lasttoke].next_type) | |
4664 | return yylex(); | |
4665 | } | |
4666 | #else | |
3280af22 | 4667 | PL_nexttoke--; |
6154021b | 4668 | pl_yylval = PL_nextval[PL_nexttoke]; |
3280af22 NIS |
4669 | if (!PL_nexttoke) { |
4670 | PL_lex_state = PL_lex_defer; | |
4671 | PL_expect = PL_lex_expect; | |
4672 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 4673 | } |
5db06880 | 4674 | #endif |
a7aaec61 Z |
4675 | { |
4676 | I32 next_type; | |
5db06880 | 4677 | #ifdef PERL_MAD |
a7aaec61 | 4678 | next_type = PL_nexttoke[PL_lasttoke].next_type; |
5db06880 | 4679 | #else |
a7aaec61 | 4680 | next_type = PL_nexttype[PL_nexttoke]; |
5db06880 | 4681 | #endif |
78cdf107 Z |
4682 | if (next_type & (7<<24)) { |
4683 | if (next_type & (1<<24)) { | |
4684 | if (PL_lex_brackets > 100) | |
4685 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
4686 | PL_lex_brackstack[PL_lex_brackets++] = | |
9d8a3661 | 4687 | (char) ((next_type >> 16) & 0xff); |
78cdf107 Z |
4688 | } |
4689 | if (next_type & (2<<24)) | |
4690 | PL_lex_allbrackets++; | |
4691 | if (next_type & (4<<24)) | |
4692 | PL_lex_allbrackets--; | |
a7aaec61 Z |
4693 | next_type &= 0xffff; |
4694 | } | |
3f33d153 | 4695 | return REPORT(next_type == 'p' ? pending_ident() : next_type); |
a7aaec61 | 4696 | } |
79072805 | 4697 | |
02aa26ce | 4698 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 4699 | when we get here, PL_bufptr is at the \ |
02aa26ce | 4700 | */ |
79072805 LW |
4701 | case LEX_INTERPCASEMOD: |
4702 | #ifdef DEBUGGING | |
3280af22 | 4703 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
5637ef5b NC |
4704 | Perl_croak(aTHX_ |
4705 | "panic: INTERPCASEMOD bufptr=%p, bufend=%p, *bufptr=%u", | |
4706 | PL_bufptr, PL_bufend, *PL_bufptr); | |
79072805 | 4707 | #endif |
02aa26ce | 4708 | /* handle \E or end of string */ |
3280af22 | 4709 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
02aa26ce | 4710 | /* if at a \E */ |
3280af22 | 4711 | if (PL_lex_casemods) { |
f54cb97a | 4712 | const char oldmod = PL_lex_casestack[--PL_lex_casemods]; |
3280af22 | 4713 | PL_lex_casestack[PL_lex_casemods] = '\0'; |
02aa26ce | 4714 | |
3792a11b | 4715 | if (PL_bufptr != PL_bufend |
838f2281 BF |
4716 | && (oldmod == 'L' || oldmod == 'U' || oldmod == 'Q' |
4717 | || oldmod == 'F')) { | |
3280af22 NIS |
4718 | PL_bufptr += 2; |
4719 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4720 | #ifdef PERL_MAD |
4721 | if (PL_madskills) | |
6b29d1f5 | 4722 | PL_thistoken = newSVpvs("\\E"); |
5db06880 | 4723 | #endif |
a0d0e21e | 4724 | } |
78cdf107 | 4725 | PL_lex_allbrackets--; |
bbf60fe6 | 4726 | return REPORT(')'); |
79072805 | 4727 | } |
52ed07f6 BF |
4728 | else if ( PL_bufptr != PL_bufend && PL_bufptr[1] == 'E' ) { |
4729 | /* Got an unpaired \E */ | |
4730 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
820438b1 | 4731 | "Useless use of \\E"); |
52ed07f6 | 4732 | } |
5db06880 NC |
4733 | #ifdef PERL_MAD |
4734 | while (PL_bufptr != PL_bufend && | |
4735 | PL_bufptr[0] == '\\' && PL_bufptr[1] == 'E') { | |
1cac5c33 FC |
4736 | if (PL_madskills) { |
4737 | if (!PL_thiswhite) | |
6b29d1f5 | 4738 | PL_thiswhite = newSVpvs(""); |
1cac5c33 FC |
4739 | sv_catpvn(PL_thiswhite, PL_bufptr, 2); |
4740 | } | |
5db06880 NC |
4741 | PL_bufptr += 2; |
4742 | } | |
4743 | #else | |
3280af22 NIS |
4744 | if (PL_bufptr != PL_bufend) |
4745 | PL_bufptr += 2; | |
5db06880 | 4746 | #endif |
3280af22 | 4747 | PL_lex_state = LEX_INTERPCONCAT; |
cea2e8a9 | 4748 | return yylex(); |
79072805 LW |
4749 | } |
4750 | else { | |
607df283 | 4751 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
b6007c36 | 4752 | "### Saw case modifier\n"); }); |
3280af22 | 4753 | s = PL_bufptr + 1; |
6e909404 | 4754 | if (s[1] == '\\' && s[2] == 'E') { |
5db06880 | 4755 | #ifdef PERL_MAD |
1cac5c33 FC |
4756 | if (PL_madskills) { |
4757 | if (!PL_thiswhite) | |
6b29d1f5 | 4758 | PL_thiswhite = newSVpvs(""); |
1cac5c33 FC |
4759 | sv_catpvn(PL_thiswhite, PL_bufptr, 4); |
4760 | } | |
5db06880 | 4761 | #endif |
89122651 | 4762 | PL_bufptr = s + 3; |
6e909404 JH |
4763 | PL_lex_state = LEX_INTERPCONCAT; |
4764 | return yylex(); | |
a0d0e21e | 4765 | } |
6e909404 | 4766 | else { |
90771dc0 | 4767 | I32 tmp; |
5db06880 NC |
4768 | if (!PL_madskills) /* when just compiling don't need correct */ |
4769 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
4770 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
838f2281 BF |
4771 | if ((*s == 'L' || *s == 'U' || *s == 'F') && |
4772 | (strchr(PL_lex_casestack, 'L') | |
4773 | || strchr(PL_lex_casestack, 'U') | |
4774 | || strchr(PL_lex_casestack, 'F'))) { | |
6e909404 | 4775 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
78cdf107 | 4776 | PL_lex_allbrackets--; |
bbf60fe6 | 4777 | return REPORT(')'); |
6e909404 JH |
4778 | } |
4779 | if (PL_lex_casemods > 10) | |
4780 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
4781 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
4782 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
4783 | PL_lex_state = LEX_INTERPCONCAT; | |
cd81e915 | 4784 | start_force(PL_curforce); |
9ded7720 | 4785 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4786 | force_next((2<<24)|'('); |
cd81e915 | 4787 | start_force(PL_curforce); |
6e909404 | 4788 | if (*s == 'l') |
9ded7720 | 4789 | NEXTVAL_NEXTTOKE.ival = OP_LCFIRST; |
6e909404 | 4790 | else if (*s == 'u') |
9ded7720 | 4791 | NEXTVAL_NEXTTOKE.ival = OP_UCFIRST; |
6e909404 | 4792 | else if (*s == 'L') |
9ded7720 | 4793 | NEXTVAL_NEXTTOKE.ival = OP_LC; |
6e909404 | 4794 | else if (*s == 'U') |
9ded7720 | 4795 | NEXTVAL_NEXTTOKE.ival = OP_UC; |
6e909404 | 4796 | else if (*s == 'Q') |
9ded7720 | 4797 | NEXTVAL_NEXTTOKE.ival = OP_QUOTEMETA; |
838f2281 BF |
4798 | else if (*s == 'F') |
4799 | NEXTVAL_NEXTTOKE.ival = OP_FC; | |
6e909404 | 4800 | else |
5637ef5b | 4801 | Perl_croak(aTHX_ "panic: yylex, *s=%u", *s); |
5db06880 | 4802 | if (PL_madskills) { |
a5849ce5 NC |
4803 | SV* const tmpsv = newSVpvs("\\ "); |
4804 | /* replace the space with the character we want to escape | |
4805 | */ | |
4806 | SvPVX(tmpsv)[1] = *s; | |
5db06880 NC |
4807 | curmad('_', tmpsv); |
4808 | } | |
6e909404 | 4809 | PL_bufptr = s + 1; |
a0d0e21e | 4810 | } |
79072805 | 4811 | force_next(FUNC); |
3280af22 NIS |
4812 | if (PL_lex_starts) { |
4813 | s = PL_bufptr; | |
4814 | PL_lex_starts = 0; | |
5db06880 NC |
4815 | #ifdef PERL_MAD |
4816 | if (PL_madskills) { | |
cd81e915 NC |
4817 | if (PL_thistoken) |
4818 | sv_free(PL_thistoken); | |
6b29d1f5 | 4819 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4820 | } |
4821 | #endif | |
131b3ad0 DM |
4822 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4823 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
4824 | OPERATOR(','); | |
4825 | else | |
4826 | Aop(OP_CONCAT); | |
79072805 LW |
4827 | } |
4828 | else | |
cea2e8a9 | 4829 | return yylex(); |
79072805 LW |
4830 | } |
4831 | ||
55497cff | 4832 | case LEX_INTERPPUSH: |
bbf60fe6 | 4833 | return REPORT(sublex_push()); |
55497cff | 4834 | |
79072805 | 4835 | case LEX_INTERPSTART: |
3280af22 | 4836 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4837 | return REPORT(sublex_done()); |
9da1dd8f | 4838 | DEBUG_T({ if(*PL_bufptr != '(') PerlIO_printf(Perl_debug_log, |
b6007c36 | 4839 | "### Interpolated variable\n"); }); |
3280af22 NIS |
4840 | PL_expect = XTERM; |
4841 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
4842 | PL_lex_state = LEX_INTERPNORMAL; | |
4843 | if (PL_lex_dojoin) { | |
cd81e915 | 4844 | start_force(PL_curforce); |
9ded7720 | 4845 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4846 | force_next(','); |
cd81e915 | 4847 | start_force(PL_curforce); |
a0d0e21e | 4848 | force_ident("\"", '$'); |
cd81e915 | 4849 | start_force(PL_curforce); |
9ded7720 | 4850 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4851 | force_next('$'); |
cd81e915 | 4852 | start_force(PL_curforce); |
9ded7720 | 4853 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4854 | force_next((2<<24)|'('); |
cd81e915 | 4855 | start_force(PL_curforce); |
9ded7720 | 4856 | NEXTVAL_NEXTTOKE.ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
4857 | force_next(FUNC); |
4858 | } | |
9da1dd8f DM |
4859 | /* Convert (?{...}) and friends to 'do {...}' */ |
4860 | if (PL_lex_inpat && *PL_bufptr == '(') { | |
3328ab5a | 4861 | PL_parser->lex_shared->re_eval_start = PL_bufptr; |
9da1dd8f DM |
4862 | PL_bufptr += 2; |
4863 | if (*PL_bufptr != '{') | |
4864 | PL_bufptr++; | |
6165f85b DM |
4865 | start_force(PL_curforce); |
4866 | /* XXX probably need a CURMAD(something) here */ | |
9da1dd8f DM |
4867 | PL_expect = XTERMBLOCK; |
4868 | force_next(DO); | |
4869 | } | |
4870 | ||
3280af22 NIS |
4871 | if (PL_lex_starts++) { |
4872 | s = PL_bufptr; | |
5db06880 NC |
4873 | #ifdef PERL_MAD |
4874 | if (PL_madskills) { | |
cd81e915 NC |
4875 | if (PL_thistoken) |
4876 | sv_free(PL_thistoken); | |
6b29d1f5 | 4877 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4878 | } |
4879 | #endif | |
131b3ad0 DM |
4880 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4881 | if (!PL_lex_casemods && PL_lex_inpat) | |
4882 | OPERATOR(','); | |
4883 | else | |
4884 | Aop(OP_CONCAT); | |
79072805 | 4885 | } |
cea2e8a9 | 4886 | return yylex(); |
79072805 LW |
4887 | |
4888 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
4889 | if (intuit_more(PL_bufptr)) { |
4890 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
4891 | break; |
4892 | } | |
4893 | /* FALL THROUGH */ | |
4894 | ||
4895 | case LEX_INTERPEND: | |
3280af22 NIS |
4896 | if (PL_lex_dojoin) { |
4897 | PL_lex_dojoin = FALSE; | |
4898 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4899 | #ifdef PERL_MAD |
4900 | if (PL_madskills) { | |
cd81e915 NC |
4901 | if (PL_thistoken) |
4902 | sv_free(PL_thistoken); | |
6b29d1f5 | 4903 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4904 | } |
4905 | #endif | |
78cdf107 | 4906 | PL_lex_allbrackets--; |
bbf60fe6 | 4907 | return REPORT(')'); |
79072805 | 4908 | } |
43a16006 | 4909 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 4910 | && SvEVALED(PL_lex_repl)) |
43a16006 | 4911 | { |
e9fa98b2 | 4912 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 4913 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
a0714e2c | 4914 | PL_lex_repl = NULL; |
e9fa98b2 | 4915 | } |
db444266 FC |
4916 | /* Paranoia. re_eval_start is adjusted when S_scan_heredoc sets |
4917 | re_eval_str. If the here-doc body’s length equals the previous | |
4918 | value of re_eval_start, re_eval_start will now be null. So | |
4919 | check re_eval_str as well. */ | |
3328ab5a FC |
4920 | if (PL_parser->lex_shared->re_eval_start |
4921 | || PL_parser->lex_shared->re_eval_str) { | |
db444266 | 4922 | SV *sv; |
9da1dd8f DM |
4923 | if (*PL_bufptr != ')') |
4924 | Perl_croak(aTHX_ "Sequence (?{...}) not terminated with ')'"); | |
4925 | PL_bufptr++; | |
4926 | /* having compiled a (?{..}) expression, return the original | |
4927 | * text too, as a const */ | |
3328ab5a FC |
4928 | if (PL_parser->lex_shared->re_eval_str) { |
4929 | sv = PL_parser->lex_shared->re_eval_str; | |
4930 | PL_parser->lex_shared->re_eval_str = NULL; | |
4931 | SvCUR_set(sv, | |
4932 | PL_bufptr - PL_parser->lex_shared->re_eval_start); | |
db444266 FC |
4933 | SvPV_shrink_to_cur(sv); |
4934 | } | |
3328ab5a FC |
4935 | else sv = newSVpvn(PL_parser->lex_shared->re_eval_start, |
4936 | PL_bufptr - PL_parser->lex_shared->re_eval_start); | |
6165f85b DM |
4937 | start_force(PL_curforce); |
4938 | /* XXX probably need a CURMAD(something) here */ | |
4939 | NEXTVAL_NEXTTOKE.opval = | |
9da1dd8f | 4940 | (OP*)newSVOP(OP_CONST, 0, |
db444266 | 4941 | sv); |
9da1dd8f | 4942 | force_next(THING); |
3328ab5a | 4943 | PL_parser->lex_shared->re_eval_start = NULL; |
9da1dd8f DM |
4944 | PL_expect = XTERM; |
4945 | return REPORT(','); | |
4946 | } | |
4947 | ||
79072805 LW |
4948 | /* FALLTHROUGH */ |
4949 | case LEX_INTERPCONCAT: | |
4950 | #ifdef DEBUGGING | |
3280af22 | 4951 | if (PL_lex_brackets) |
5637ef5b NC |
4952 | Perl_croak(aTHX_ "panic: INTERPCONCAT, lex_brackets=%ld", |
4953 | (long) PL_lex_brackets); | |
79072805 | 4954 | #endif |
3280af22 | 4955 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4956 | return REPORT(sublex_done()); |
79072805 | 4957 | |
9da1dd8f DM |
4958 | /* m'foo' still needs to be parsed for possible (?{...}) */ |
4959 | if (SvIVX(PL_linestr) == '\'' && !PL_lex_inpat) { | |
3280af22 | 4960 | SV *sv = newSVsv(PL_linestr); |
9da1dd8f | 4961 | sv = tokeq(sv); |
6154021b | 4962 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 4963 | s = PL_bufend; |
79072805 LW |
4964 | } |
4965 | else { | |
3280af22 | 4966 | s = scan_const(PL_bufptr); |
79072805 | 4967 | if (*s == '\\') |
3280af22 | 4968 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 4969 | else |
3280af22 | 4970 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
4971 | } |
4972 | ||
3280af22 | 4973 | if (s != PL_bufptr) { |
cd81e915 | 4974 | start_force(PL_curforce); |
5db06880 NC |
4975 | if (PL_madskills) { |
4976 | curmad('X', newSVpvn(PL_bufptr,s-PL_bufptr)); | |
4977 | } | |
6154021b | 4978 | NEXTVAL_NEXTTOKE = pl_yylval; |
3280af22 | 4979 | PL_expect = XTERM; |
79072805 | 4980 | force_next(THING); |
131b3ad0 | 4981 | if (PL_lex_starts++) { |
5db06880 NC |
4982 | #ifdef PERL_MAD |
4983 | if (PL_madskills) { | |
cd81e915 NC |
4984 | if (PL_thistoken) |
4985 | sv_free(PL_thistoken); | |
6b29d1f5 | 4986 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4987 | } |
4988 | #endif | |
131b3ad0 DM |
4989 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4990 | if (!PL_lex_casemods && PL_lex_inpat) | |
4991 | OPERATOR(','); | |
4992 | else | |
4993 | Aop(OP_CONCAT); | |
4994 | } | |
79072805 | 4995 | else { |
3280af22 | 4996 | PL_bufptr = s; |
cea2e8a9 | 4997 | return yylex(); |
79072805 LW |
4998 | } |
4999 | } | |
5000 | ||
cea2e8a9 | 5001 | return yylex(); |
a0d0e21e | 5002 | case LEX_FORMLINE: |
3280af22 NIS |
5003 | s = scan_formline(PL_bufptr); |
5004 | if (!PL_lex_formbrack) | |
7c70caa5 | 5005 | { |
705fe0e5 | 5006 | formbrack = 1; |
a0d0e21e | 5007 | goto rightbracket; |
7c70caa5 | 5008 | } |
705fe0e5 FC |
5009 | PL_bufptr = s; |
5010 | return yylex(); | |
79072805 LW |
5011 | } |
5012 | ||
3280af22 NIS |
5013 | s = PL_bufptr; |
5014 | PL_oldoldbufptr = PL_oldbufptr; | |
5015 | PL_oldbufptr = s; | |
463ee0b2 LW |
5016 | |
5017 | retry: | |
5db06880 | 5018 | #ifdef PERL_MAD |
cd81e915 NC |
5019 | if (PL_thistoken) { |
5020 | sv_free(PL_thistoken); | |
5021 | PL_thistoken = 0; | |
5db06880 | 5022 | } |
cd81e915 | 5023 | PL_realtokenstart = s - SvPVX(PL_linestr); /* assume but undo on ws */ |
5db06880 | 5024 | #endif |
378cc40b LW |
5025 | switch (*s) { |
5026 | default: | |
7e2040f0 | 5027 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 5028 | goto keylookup; |
b1fc3636 | 5029 | { |
e2f06df0 BF |
5030 | SV *dsv = newSVpvs_flags("", SVs_TEMP); |
5031 | const char *c = UTF ? savepv(sv_uni_display(dsv, newSVpvn_flags(s, | |
5032 | UTF8SKIP(s), | |
5033 | SVs_TEMP | SVf_UTF8), | |
5034 | 10, UNI_DISPLAY_ISPRINT)) | |
5035 | : Perl_form(aTHX_ "\\x%02X", (unsigned char)*s); | |
b1fc3636 CJ |
5036 | len = UTF ? Perl_utf8_length(aTHX_ (U8 *) PL_linestart, (U8 *) s) : (STRLEN) (s - PL_linestart); |
5037 | if (len > UNRECOGNIZED_PRECEDE_COUNT) { | |
5038 | d = UTF ? (char *) Perl_utf8_hop(aTHX_ (U8 *) s, -UNRECOGNIZED_PRECEDE_COUNT) : s - UNRECOGNIZED_PRECEDE_COUNT; | |
5039 | } else { | |
5040 | d = PL_linestart; | |
5041 | } | |
5042 | *s = '\0'; | |
e2f06df0 BF |
5043 | sv_setpv(dsv, d); |
5044 | if (UTF) | |
5045 | SvUTF8_on(dsv); | |
5046 | Perl_croak(aTHX_ "Unrecognized character %s; marked by <-- HERE after %"SVf"<-- HERE near column %d", c, SVfARG(dsv), (int) len + 1); | |
b1fc3636 | 5047 | } |
e929a76b LW |
5048 | case 4: |
5049 | case 26: | |
5050 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 5051 | case 0: |
5db06880 NC |
5052 | #ifdef PERL_MAD |
5053 | if (PL_madskills) | |
cd81e915 | 5054 | PL_faketokens = 0; |
5db06880 | 5055 | #endif |
60d63348 | 5056 | if (!PL_rsfp && (!PL_parser->filtered || s+1 < PL_bufend)) { |
3280af22 NIS |
5057 | PL_last_uni = 0; |
5058 | PL_last_lop = 0; | |
a7aaec61 Z |
5059 | if (PL_lex_brackets && |
5060 | PL_lex_brackstack[PL_lex_brackets-1] != XFAKEEOF) { | |
10edeb5d JH |
5061 | yyerror((const char *) |
5062 | (PL_lex_formbrack | |
5063 | ? "Format not terminated" | |
5064 | : "Missing right curly or square bracket")); | |
c5ee2135 | 5065 | } |
4e553d73 | 5066 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 5067 | "### Tokener got EOF\n"); |
5f80b19c | 5068 | } ); |
79072805 | 5069 | TOKEN(0); |
463ee0b2 | 5070 | } |
3280af22 | 5071 | if (s++ < PL_bufend) |
a687059c | 5072 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
5073 | PL_last_uni = 0; |
5074 | PL_last_lop = 0; | |
5075 | if (!PL_in_eval && !PL_preambled) { | |
5076 | PL_preambled = TRUE; | |
5db06880 NC |
5077 | #ifdef PERL_MAD |
5078 | if (PL_madskills) | |
cd81e915 | 5079 | PL_faketokens = 1; |
5db06880 | 5080 | #endif |
5ab7ff98 NC |
5081 | if (PL_perldb) { |
5082 | /* Generate a string of Perl code to load the debugger. | |
5083 | * If PERL5DB is set, it will return the contents of that, | |
5084 | * otherwise a compile-time require of perl5db.pl. */ | |
5085 | ||
5086 | const char * const pdb = PerlEnv_getenv("PERL5DB"); | |
5087 | ||
5088 | if (pdb) { | |
5089 | sv_setpv(PL_linestr, pdb); | |
5090 | sv_catpvs(PL_linestr,";"); | |
5091 | } else { | |
5092 | SETERRNO(0,SS_NORMAL); | |
5093 | sv_setpvs(PL_linestr, "BEGIN { require 'perl5db.pl' };"); | |
5094 | } | |
5095 | } else | |
5096 | sv_setpvs(PL_linestr,""); | |
c62eb204 NC |
5097 | if (PL_preambleav) { |
5098 | SV **svp = AvARRAY(PL_preambleav); | |
5099 | SV **const end = svp + AvFILLp(PL_preambleav); | |
5100 | while(svp <= end) { | |
5101 | sv_catsv(PL_linestr, *svp); | |
5102 | ++svp; | |
396482e1 | 5103 | sv_catpvs(PL_linestr, ";"); |
91b7def8 | 5104 | } |
daba3364 | 5105 | sv_free(MUTABLE_SV(PL_preambleav)); |
3280af22 | 5106 | PL_preambleav = NULL; |
91b7def8 | 5107 | } |
9f639728 FR |
5108 | if (PL_minus_E) |
5109 | sv_catpvs(PL_linestr, | |
5110 | "use feature ':5." STRINGIFY(PERL_VERSION) "';"); | |
3280af22 | 5111 | if (PL_minus_n || PL_minus_p) { |
f0e67a1d | 5112 | sv_catpvs(PL_linestr, "LINE: while (<>) {"/*}*/); |
3280af22 | 5113 | if (PL_minus_l) |
396482e1 | 5114 | sv_catpvs(PL_linestr,"chomp;"); |
3280af22 | 5115 | if (PL_minus_a) { |
3280af22 | 5116 | if (PL_minus_F) { |
3792a11b NC |
5117 | if ((*PL_splitstr == '/' || *PL_splitstr == '\'' |
5118 | || *PL_splitstr == '"') | |
3280af22 | 5119 | && strchr(PL_splitstr + 1, *PL_splitstr)) |
3db68c4c | 5120 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 5121 | else { |
c8ef6a4b NC |
5122 | /* "q\0${splitstr}\0" is legal perl. Yes, even NUL |
5123 | bytes can be used as quoting characters. :-) */ | |
dd374669 | 5124 | const char *splits = PL_splitstr; |
91d456ae | 5125 | sv_catpvs(PL_linestr, "our @F=split(q\0"); |
48c4c863 NC |
5126 | do { |
5127 | /* Need to \ \s */ | |
dd374669 AL |
5128 | if (*splits == '\\') |
5129 | sv_catpvn(PL_linestr, splits, 1); | |
5130 | sv_catpvn(PL_linestr, splits, 1); | |
5131 | } while (*splits++); | |
48c4c863 NC |
5132 | /* This loop will embed the trailing NUL of |
5133 | PL_linestr as the last thing it does before | |
5134 | terminating. */ | |
396482e1 | 5135 | sv_catpvs(PL_linestr, ");"); |
54310121 | 5136 | } |
2304df62 AD |
5137 | } |
5138 | else | |
396482e1 | 5139 | sv_catpvs(PL_linestr,"our @F=split(' ');"); |
2304df62 | 5140 | } |
79072805 | 5141 | } |
396482e1 | 5142 | sv_catpvs(PL_linestr, "\n"); |
3280af22 NIS |
5143 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5144 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5145 | PL_last_lop = PL_last_uni = NULL; |
65269a95 | 5146 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) |
5fa550fb | 5147 | update_debugger_info(PL_linestr, NULL, 0); |
79072805 | 5148 | goto retry; |
a687059c | 5149 | } |
e929a76b | 5150 | do { |
580561a3 Z |
5151 | fake_eof = 0; |
5152 | bof = PL_rsfp ? TRUE : FALSE; | |
f0e67a1d | 5153 | if (0) { |
7e28d3af | 5154 | fake_eof: |
f0e67a1d Z |
5155 | fake_eof = LEX_FAKE_EOF; |
5156 | } | |
5157 | PL_bufptr = PL_bufend; | |
83944c01 | 5158 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d | 5159 | if (!lex_next_chunk(fake_eof)) { |
17cc9359 | 5160 | CopLINE_dec(PL_curcop); |
f0e67a1d Z |
5161 | s = PL_bufptr; |
5162 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
5163 | } | |
17cc9359 | 5164 | CopLINE_dec(PL_curcop); |
5db06880 | 5165 | #ifdef PERL_MAD |
f0e67a1d | 5166 | if (!PL_rsfp) |
cd81e915 | 5167 | PL_realtokenstart = -1; |
5db06880 | 5168 | #endif |
f0e67a1d | 5169 | s = PL_bufptr; |
7aa207d6 JH |
5170 | /* If it looks like the start of a BOM or raw UTF-16, |
5171 | * check if it in fact is. */ | |
580561a3 | 5172 | if (bof && PL_rsfp && |
7aa207d6 JH |
5173 | (*s == 0 || |
5174 | *(U8*)s == 0xEF || | |
5175 | *(U8*)s >= 0xFE || | |
5176 | s[1] == 0)) { | |
879bc93b DM |
5177 | Off_t offset = (IV)PerlIO_tell(PL_rsfp); |
5178 | bof = (offset == (Off_t)SvCUR(PL_linestr)); | |
6d510155 JD |
5179 | #if defined(PERLIO_USING_CRLF) && defined(PERL_TEXTMODE_SCRIPTS) |
5180 | /* offset may include swallowed CR */ | |
5181 | if (!bof) | |
879bc93b | 5182 | bof = (offset == (Off_t)SvCUR(PL_linestr)+1); |
6d510155 | 5183 | #endif |
7e28d3af | 5184 | if (bof) { |
3280af22 | 5185 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 5186 | s = swallow_bom((U8*)s); |
e929a76b | 5187 | } |
378cc40b | 5188 | } |
737c24fc | 5189 | if (PL_parser->in_pod) { |
a0d0e21e | 5190 | /* Incest with pod. */ |
5db06880 NC |
5191 | #ifdef PERL_MAD |
5192 | if (PL_madskills) | |
cd81e915 | 5193 | sv_catsv(PL_thiswhite, PL_linestr); |
5db06880 | 5194 | #endif |
01a57ef7 | 5195 | if (*s == '=' && strnEQ(s, "=cut", 4) && !isALPHA(s[4])) { |
76f68e9b | 5196 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
5197 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5198 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5199 | PL_last_lop = PL_last_uni = NULL; |
737c24fc | 5200 | PL_parser->in_pod = 0; |
a0d0e21e | 5201 | } |
4e553d73 | 5202 | } |
60d63348 | 5203 | if (PL_rsfp || PL_parser->filtered) |
85613cab | 5204 | incline(s); |
737c24fc | 5205 | } while (PL_parser->in_pod); |
3280af22 | 5206 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; |
3280af22 | 5207 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
bd61b366 | 5208 | PL_last_lop = PL_last_uni = NULL; |
57843af0 | 5209 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 5210 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 5211 | s++; |
a0d0e21e | 5212 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 5213 | s++; |
5db06880 NC |
5214 | #ifdef PERL_MAD |
5215 | if (PL_madskills) | |
cd81e915 | 5216 | PL_thiswhite = newSVpvn(PL_linestart, s - PL_linestart); |
5db06880 | 5217 | #endif |
bd61b366 | 5218 | d = NULL; |
3280af22 | 5219 | if (!PL_in_eval) { |
44a8e56a | 5220 | if (*s == '#' && *(s+1) == '!') |
5221 | d = s + 2; | |
5222 | #ifdef ALTERNATE_SHEBANG | |
5223 | else { | |
bfed75c6 | 5224 | static char const as[] = ALTERNATE_SHEBANG; |
44a8e56a | 5225 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) |
5226 | d = s + (sizeof(as) - 1); | |
5227 | } | |
5228 | #endif /* ALTERNATE_SHEBANG */ | |
5229 | } | |
5230 | if (d) { | |
b8378b72 | 5231 | char *ipath; |
774d564b | 5232 | char *ipathend; |
b8378b72 | 5233 | |
774d564b | 5234 | while (isSPACE(*d)) |
b8378b72 CS |
5235 | d++; |
5236 | ipath = d; | |
774d564b | 5237 | while (*d && !isSPACE(*d)) |
5238 | d++; | |
5239 | ipathend = d; | |
5240 | ||
5241 | #ifdef ARG_ZERO_IS_SCRIPT | |
5242 | if (ipathend > ipath) { | |
5243 | /* | |
5244 | * HP-UX (at least) sets argv[0] to the script name, | |
5245 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
5246 | * at least, set argv[0] to the basename of the Perl | |
5247 | * interpreter. So, having found "#!", we'll set it right. | |
5248 | */ | |
fafc274c NC |
5249 | SV * const x = GvSV(gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, |
5250 | SVt_PV)); /* $^X */ | |
774d564b | 5251 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 5252 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 5253 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 5254 | SvSETMAGIC(x); |
5255 | } | |
556c1dec JH |
5256 | else { |
5257 | STRLEN blen; | |
5258 | STRLEN llen; | |
cfd0369c | 5259 | const char *bstart = SvPV_const(CopFILESV(PL_curcop),blen); |
9d4ba2ae | 5260 | const char * const lstart = SvPV_const(x,llen); |
556c1dec JH |
5261 | if (llen < blen) { |
5262 | bstart += blen - llen; | |
5263 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
5264 | sv_setpvn(x, ipath, ipathend - ipath); | |
5265 | SvSETMAGIC(x); | |
5266 | } | |
5267 | } | |
5268 | } | |
774d564b | 5269 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 5270 | } |
774d564b | 5271 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
5272 | |
5273 | /* | |
5274 | * Look for options. | |
5275 | */ | |
748a9306 | 5276 | d = instr(s,"perl -"); |
84e30d1a | 5277 | if (!d) { |
748a9306 | 5278 | d = instr(s,"perl"); |
84e30d1a GS |
5279 | #if defined(DOSISH) |
5280 | /* avoid getting into infinite loops when shebang | |
5281 | * line contains "Perl" rather than "perl" */ | |
5282 | if (!d) { | |
5283 | for (d = ipathend-4; d >= ipath; --d) { | |
5284 | if ((*d == 'p' || *d == 'P') | |
5285 | && !ibcmp(d, "perl", 4)) | |
5286 | { | |
5287 | break; | |
5288 | } | |
5289 | } | |
5290 | if (d < ipath) | |
bd61b366 | 5291 | d = NULL; |
84e30d1a GS |
5292 | } |
5293 | #endif | |
5294 | } | |
44a8e56a | 5295 | #ifdef ALTERNATE_SHEBANG |
5296 | /* | |
5297 | * If the ALTERNATE_SHEBANG on this system starts with a | |
5298 | * character that can be part of a Perl expression, then if | |
5299 | * we see it but not "perl", we're probably looking at the | |
5300 | * start of Perl code, not a request to hand off to some | |
5301 | * other interpreter. Similarly, if "perl" is there, but | |
5302 | * not in the first 'word' of the line, we assume the line | |
5303 | * contains the start of the Perl program. | |
44a8e56a | 5304 | */ |
5305 | if (d && *s != '#') { | |
f54cb97a | 5306 | const char *c = ipath; |
44a8e56a | 5307 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
5308 | c++; | |
5309 | if (c < d) | |
bd61b366 | 5310 | d = NULL; /* "perl" not in first word; ignore */ |
44a8e56a | 5311 | else |
5312 | *s = '#'; /* Don't try to parse shebang line */ | |
5313 | } | |
774d564b | 5314 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 5315 | if (!d && |
44a8e56a | 5316 | *s == '#' && |
774d564b | 5317 | ipathend > ipath && |
3280af22 | 5318 | !PL_minus_c && |
748a9306 | 5319 | !instr(s,"indir") && |
3280af22 | 5320 | instr(PL_origargv[0],"perl")) |
748a9306 | 5321 | { |
27da23d5 | 5322 | dVAR; |
9f68db38 | 5323 | char **newargv; |
9f68db38 | 5324 | |
774d564b | 5325 | *ipathend = '\0'; |
5326 | s = ipathend + 1; | |
3280af22 | 5327 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 5328 | s++; |
3280af22 | 5329 | if (s < PL_bufend) { |
d85f917e | 5330 | Newx(newargv,PL_origargc+3,char*); |
9f68db38 | 5331 | newargv[1] = s; |
3280af22 | 5332 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
5333 | s++; |
5334 | *s = '\0'; | |
3280af22 | 5335 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
5336 | } |
5337 | else | |
3280af22 | 5338 | newargv = PL_origargv; |
774d564b | 5339 | newargv[0] = ipath; |
b35112e7 | 5340 | PERL_FPU_PRE_EXEC |
b4748376 | 5341 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 5342 | PERL_FPU_POST_EXEC |
cea2e8a9 | 5343 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 5344 | } |
748a9306 | 5345 | if (d) { |
c35e046a AL |
5346 | while (*d && !isSPACE(*d)) |
5347 | d++; | |
5348 | while (SPACE_OR_TAB(*d)) | |
5349 | d++; | |
748a9306 LW |
5350 | |
5351 | if (*d++ == '-') { | |
f54cb97a | 5352 | const bool switches_done = PL_doswitches; |
fb993905 GA |
5353 | const U32 oldpdb = PL_perldb; |
5354 | const bool oldn = PL_minus_n; | |
5355 | const bool oldp = PL_minus_p; | |
c7030b81 | 5356 | const char *d1 = d; |
fb993905 | 5357 | |
8cc95fdb | 5358 | do { |
4ba71d51 FC |
5359 | bool baduni = FALSE; |
5360 | if (*d1 == 'C') { | |
bd0ab00d NC |
5361 | const char *d2 = d1 + 1; |
5362 | if (parse_unicode_opts((const char **)&d2) | |
5363 | != PL_unicode) | |
5364 | baduni = TRUE; | |
4ba71d51 FC |
5365 | } |
5366 | if (baduni || *d1 == 'M' || *d1 == 'm') { | |
c7030b81 NC |
5367 | const char * const m = d1; |
5368 | while (*d1 && !isSPACE(*d1)) | |
5369 | d1++; | |
cea2e8a9 | 5370 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
c7030b81 | 5371 | (int)(d1 - m), m); |
8cc95fdb | 5372 | } |
c7030b81 NC |
5373 | d1 = moreswitches(d1); |
5374 | } while (d1); | |
f0b2cf55 YST |
5375 | if (PL_doswitches && !switches_done) { |
5376 | int argc = PL_origargc; | |
5377 | char **argv = PL_origargv; | |
5378 | do { | |
5379 | argc--,argv++; | |
5380 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
5381 | init_argv_symbols(argc,argv); | |
5382 | } | |
65269a95 | 5383 | if (((PERLDB_LINE || PERLDB_SAVESRC) && !oldpdb) || |
155aba94 | 5384 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) |
b084f20b | 5385 | /* if we have already added "LINE: while (<>) {", |
5386 | we must not do it again */ | |
748a9306 | 5387 | { |
76f68e9b | 5388 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
5389 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5390 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5391 | PL_last_lop = PL_last_uni = NULL; |
3280af22 | 5392 | PL_preambled = FALSE; |
65269a95 | 5393 | if (PERLDB_LINE || PERLDB_SAVESRC) |
3280af22 | 5394 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
5395 | goto retry; |
5396 | } | |
a0d0e21e | 5397 | } |
79072805 | 5398 | } |
9f68db38 | 5399 | } |
79072805 | 5400 | } |
3280af22 | 5401 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
3280af22 | 5402 | PL_lex_state = LEX_FORMLINE; |
705fe0e5 FC |
5403 | start_force(PL_curforce); |
5404 | NEXTVAL_NEXTTOKE.ival = 0; | |
5405 | force_next(FORMRBRACK); | |
5406 | TOKEN(';'); | |
ae986130 | 5407 | } |
378cc40b | 5408 | goto retry; |
4fdae800 | 5409 | case '\r': |
6a27c188 | 5410 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 5411 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 5412 | Perl_croak(aTHX_ |
cc507455 | 5413 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 5414 | #endif |
4fdae800 | 5415 | case ' ': case '\t': case '\f': case 013: |
5db06880 | 5416 | #ifdef PERL_MAD |
cd81e915 | 5417 | PL_realtokenstart = -1; |
1cac5c33 FC |
5418 | if (PL_madskills) { |
5419 | if (!PL_thiswhite) | |
ac372eb8 | 5420 | PL_thiswhite = newSVpvs(""); |
1cac5c33 FC |
5421 | sv_catpvn(PL_thiswhite, s, 1); |
5422 | } | |
5db06880 | 5423 | #endif |
ac372eb8 | 5424 | s++; |
378cc40b | 5425 | goto retry; |
378cc40b | 5426 | case '#': |
e929a76b | 5427 | case '\n': |
5db06880 | 5428 | #ifdef PERL_MAD |
cd81e915 | 5429 | PL_realtokenstart = -1; |
5db06880 | 5430 | if (PL_madskills) |
cd81e915 | 5431 | PL_faketokens = 0; |
5db06880 | 5432 | #endif |
60d63348 | 5433 | if (PL_lex_state != LEX_NORMAL || |
62e4c90a FC |
5434 | (PL_in_eval && !PL_rsfp && !PL_parser->filtered)) { |
5435 | if (*s == '#' && s == PL_linestart && PL_in_eval | |
60d63348 | 5436 | && !PL_rsfp && !PL_parser->filtered) { |
df0deb90 GS |
5437 | /* handle eval qq[#line 1 "foo"\n ...] */ |
5438 | CopLINE_dec(PL_curcop); | |
5439 | incline(s); | |
5440 | } | |
5db06880 NC |
5441 | if (PL_madskills && !PL_lex_formbrack && !PL_in_eval) { |
5442 | s = SKIPSPACE0(s); | |
62e4c90a | 5443 | if (!PL_in_eval || PL_rsfp || PL_parser->filtered) |
5db06880 NC |
5444 | incline(s); |
5445 | } | |
5446 | else { | |
9c74ccc9 | 5447 | const bool in_comment = *s == '#'; |
5db06880 NC |
5448 | d = s; |
5449 | while (d < PL_bufend && *d != '\n') | |
5450 | d++; | |
5451 | if (d < PL_bufend) | |
5452 | d++; | |
5453 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5637ef5b NC |
5454 | Perl_croak(aTHX_ "panic: input overflow, %p > %p", |
5455 | d, PL_bufend); | |
5db06880 NC |
5456 | #ifdef PERL_MAD |
5457 | if (PL_madskills) | |
cd81e915 | 5458 | PL_thiswhite = newSVpvn(s, d - s); |
5db06880 NC |
5459 | #endif |
5460 | s = d; | |
9c74ccc9 FC |
5461 | if (in_comment && d == PL_bufend |
5462 | && PL_lex_state == LEX_INTERPNORMAL | |
90a536e1 | 5463 | && PL_lex_inwhat == OP_SUBST && PL_lex_repl == PL_linestr |
9c74ccc9 FC |
5464 | && SvEVALED(PL_lex_repl) && d[-1] == '}') s--; |
5465 | else incline(s); | |
5db06880 | 5466 | } |
3280af22 | 5467 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
3280af22 | 5468 | PL_lex_state = LEX_FORMLINE; |
705fe0e5 FC |
5469 | start_force(PL_curforce); |
5470 | NEXTVAL_NEXTTOKE.ival = 0; | |
5471 | force_next(FORMRBRACK); | |
5472 | TOKEN(';'); | |
a687059c | 5473 | } |
378cc40b | 5474 | } |
a687059c | 5475 | else { |
5db06880 NC |
5476 | #ifdef PERL_MAD |
5477 | if (PL_madskills && CopLINE(PL_curcop) >= 1 && !PL_lex_formbrack) { | |
5478 | if (CopLINE(PL_curcop) == 1 && s[0] == '#' && s[1] == '!') { | |
cd81e915 | 5479 | PL_faketokens = 0; |
5db06880 NC |
5480 | s = SKIPSPACE0(s); |
5481 | TOKEN(PEG); /* make sure any #! line is accessible */ | |
5482 | } | |
5483 | s = SKIPSPACE0(s); | |
5484 | } | |
5485 | else { | |
5486 | /* if (PL_madskills && PL_lex_formbrack) { */ | |
5487 | d = s; | |
5488 | while (d < PL_bufend && *d != '\n') | |
5489 | d++; | |
5490 | if (d < PL_bufend) | |
5491 | d++; | |
5492 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5493 | Perl_croak(aTHX_ "panic: input overflow"); | |
5494 | if (PL_madskills && CopLINE(PL_curcop) >= 1) { | |
cd81e915 | 5495 | if (!PL_thiswhite) |
6b29d1f5 | 5496 | PL_thiswhite = newSVpvs(""); |
5db06880 | 5497 | if (CopLINE(PL_curcop) == 1) { |
76f68e9b | 5498 | sv_setpvs(PL_thiswhite, ""); |
cd81e915 | 5499 | PL_faketokens = 0; |
5db06880 | 5500 | } |
cd81e915 | 5501 | sv_catpvn(PL_thiswhite, s, d - s); |
5db06880 NC |
5502 | } |
5503 | s = d; | |
5504 | /* } | |
5505 | *s = '\0'; | |
5506 | PL_bufend = s; */ | |
5507 | } | |
5508 | #else | |
378cc40b | 5509 | *s = '\0'; |
3280af22 | 5510 | PL_bufend = s; |
5db06880 | 5511 | #endif |
a687059c | 5512 | } |
378cc40b LW |
5513 | goto retry; |
5514 | case '-': | |
0eb30aeb | 5515 | if (s[1] && isALPHA(s[1]) && !isWORDCHAR(s[2])) { |
e5edeb50 | 5516 | I32 ftst = 0; |
90771dc0 | 5517 | char tmp; |
e5edeb50 | 5518 | |
378cc40b | 5519 | s++; |
3280af22 | 5520 | PL_bufptr = s; |
748a9306 LW |
5521 | tmp = *s++; |
5522 | ||
bf4acbe4 | 5523 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
5524 | s++; |
5525 | ||
5526 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 5527 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
931e0695 | 5528 | DEBUG_T( { printbuf("### Saw unary minus before =>, forcing word %s\n", s); } ); |
748a9306 LW |
5529 | OPERATOR('-'); /* unary minus */ |
5530 | } | |
3280af22 | 5531 | PL_last_uni = PL_oldbufptr; |
748a9306 | 5532 | switch (tmp) { |
e5edeb50 JH |
5533 | case 'r': ftst = OP_FTEREAD; break; |
5534 | case 'w': ftst = OP_FTEWRITE; break; | |
5535 | case 'x': ftst = OP_FTEEXEC; break; | |
5536 | case 'o': ftst = OP_FTEOWNED; break; | |
5537 | case 'R': ftst = OP_FTRREAD; break; | |
5538 | case 'W': ftst = OP_FTRWRITE; break; | |
5539 | case 'X': ftst = OP_FTREXEC; break; | |
5540 | case 'O': ftst = OP_FTROWNED; break; | |
5541 | case 'e': ftst = OP_FTIS; break; | |
5542 | case 'z': ftst = OP_FTZERO; break; | |
5543 | case 's': ftst = OP_FTSIZE; break; | |
5544 | case 'f': ftst = OP_FTFILE; break; | |
5545 | case 'd': ftst = OP_FTDIR; break; | |
5546 | case 'l': ftst = OP_FTLINK; break; | |
5547 | case 'p': ftst = OP_FTPIPE; break; | |
5548 | case 'S': ftst = OP_FTSOCK; break; | |
5549 | case 'u': ftst = OP_FTSUID; break; | |
5550 | case 'g': ftst = OP_FTSGID; break; | |
5551 | case 'k': ftst = OP_FTSVTX; break; | |
5552 | case 'b': ftst = OP_FTBLK; break; | |
5553 | case 'c': ftst = OP_FTCHR; break; | |
5554 | case 't': ftst = OP_FTTTY; break; | |
5555 | case 'T': ftst = OP_FTTEXT; break; | |
5556 | case 'B': ftst = OP_FTBINARY; break; | |
5557 | case 'M': case 'A': case 'C': | |
fafc274c | 5558 | gv_fetchpvs("\024", GV_ADD|GV_NOTQUAL, SVt_PV); |
e5edeb50 JH |
5559 | switch (tmp) { |
5560 | case 'M': ftst = OP_FTMTIME; break; | |
5561 | case 'A': ftst = OP_FTATIME; break; | |
5562 | case 'C': ftst = OP_FTCTIME; break; | |
5563 | default: break; | |
5564 | } | |
5565 | break; | |
378cc40b | 5566 | default: |
378cc40b LW |
5567 | break; |
5568 | } | |
e5edeb50 | 5569 | if (ftst) { |
eb160463 | 5570 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 5571 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
a18d764d | 5572 | "### Saw file test %c\n", (int)tmp); |
5f80b19c | 5573 | } ); |
e5edeb50 JH |
5574 | FTST(ftst); |
5575 | } | |
5576 | else { | |
5577 | /* Assume it was a minus followed by a one-letter named | |
5578 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 5579 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 | 5580 | "### '-%c' looked like a file test but was not\n", |
4fccd7c6 | 5581 | (int) tmp); |
5f80b19c | 5582 | } ); |
3cf7b4c4 | 5583 | s = --PL_bufptr; |
e5edeb50 | 5584 | } |
378cc40b | 5585 | } |
90771dc0 NC |
5586 | { |
5587 | const char tmp = *s++; | |
5588 | if (*s == tmp) { | |
5589 | s++; | |
5590 | if (PL_expect == XOPERATOR) | |
5591 | TERM(POSTDEC); | |
5592 | else | |
5593 | OPERATOR(PREDEC); | |
5594 | } | |
5595 | else if (*s == '>') { | |
5596 | s++; | |
29595ff2 | 5597 | s = SKIPSPACE1(s); |
90771dc0 NC |
5598 | if (isIDFIRST_lazy_if(s,UTF)) { |
5599 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); | |
5600 | TOKEN(ARROW); | |
5601 | } | |
5602 | else if (*s == '$') | |
5603 | OPERATOR(ARROW); | |
5604 | else | |
5605 | TERM(ARROW); | |
5606 | } | |
78cdf107 Z |
5607 | if (PL_expect == XOPERATOR) { |
5608 | if (*s == '=' && !PL_lex_allbrackets && | |
5609 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5610 | s--; | |
5611 | TOKEN(0); | |
5612 | } | |
90771dc0 | 5613 | Aop(OP_SUBTRACT); |
78cdf107 | 5614 | } |
90771dc0 NC |
5615 | else { |
5616 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5617 | check_uni(); | |
5618 | OPERATOR('-'); /* unary minus */ | |
79072805 | 5619 | } |
2f3197b3 | 5620 | } |
79072805 | 5621 | |
378cc40b | 5622 | case '+': |
90771dc0 NC |
5623 | { |
5624 | const char tmp = *s++; | |
5625 | if (*s == tmp) { | |
5626 | s++; | |
5627 | if (PL_expect == XOPERATOR) | |
5628 | TERM(POSTINC); | |
5629 | else | |
5630 | OPERATOR(PREINC); | |
5631 | } | |
78cdf107 Z |
5632 | if (PL_expect == XOPERATOR) { |
5633 | if (*s == '=' && !PL_lex_allbrackets && | |
5634 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5635 | s--; | |
5636 | TOKEN(0); | |
5637 | } | |
90771dc0 | 5638 | Aop(OP_ADD); |
78cdf107 | 5639 | } |
90771dc0 NC |
5640 | else { |
5641 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5642 | check_uni(); | |
5643 | OPERATOR('+'); | |
5644 | } | |
2f3197b3 | 5645 | } |
a687059c | 5646 | |
378cc40b | 5647 | case '*': |
3280af22 NIS |
5648 | if (PL_expect != XOPERATOR) { |
5649 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
5650 | PL_expect = XOPERATOR; | |
5651 | force_ident(PL_tokenbuf, '*'); | |
5652 | if (!*PL_tokenbuf) | |
a0d0e21e | 5653 | PREREF('*'); |
79072805 | 5654 | TERM('*'); |
a687059c | 5655 | } |
79072805 LW |
5656 | s++; |
5657 | if (*s == '*') { | |
a687059c | 5658 | s++; |
78cdf107 Z |
5659 | if (*s == '=' && !PL_lex_allbrackets && |
5660 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5661 | s -= 2; | |
5662 | TOKEN(0); | |
5663 | } | |
79072805 | 5664 | PWop(OP_POW); |
a687059c | 5665 | } |
78cdf107 Z |
5666 | if (*s == '=' && !PL_lex_allbrackets && |
5667 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5668 | s--; | |
5669 | TOKEN(0); | |
5670 | } | |
79072805 LW |
5671 | Mop(OP_MULTIPLY); |
5672 | ||
378cc40b | 5673 | case '%': |
3280af22 | 5674 | if (PL_expect == XOPERATOR) { |
78cdf107 Z |
5675 | if (s[1] == '=' && !PL_lex_allbrackets && |
5676 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
5677 | TOKEN(0); | |
bbce6d69 | 5678 | ++s; |
5679 | Mop(OP_MODULO); | |
a687059c | 5680 | } |
3280af22 | 5681 | PL_tokenbuf[0] = '%'; |
e8ae98db RGS |
5682 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
5683 | sizeof PL_tokenbuf - 1, FALSE); | |
3280af22 | 5684 | if (!PL_tokenbuf[1]) { |
bbce6d69 | 5685 | PREREF('%'); |
a687059c | 5686 | } |
60ac52eb FC |
5687 | PL_expect = XOPERATOR; |
5688 | force_ident_maybe_lex('%'); | |
bbce6d69 | 5689 | TERM('%'); |
a687059c | 5690 | |
378cc40b | 5691 | case '^': |
78cdf107 Z |
5692 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5693 | (s[1] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) | |
5694 | TOKEN(0); | |
79072805 | 5695 | s++; |
a0d0e21e | 5696 | BOop(OP_BIT_XOR); |
79072805 | 5697 | case '[': |
a7aaec61 Z |
5698 | if (PL_lex_brackets > 100) |
5699 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
5700 | PL_lex_brackstack[PL_lex_brackets++] = 0; | |
78cdf107 | 5701 | PL_lex_allbrackets++; |
df3467db IG |
5702 | { |
5703 | const char tmp = *s++; | |
5704 | OPERATOR(tmp); | |
5705 | } | |
378cc40b | 5706 | case '~': |
0d863452 | 5707 | if (s[1] == '~' |
3e7dd34d | 5708 | && (PL_expect == XOPERATOR || PL_expect == XTERMORDORDOR)) |
0d863452 | 5709 | { |
78cdf107 Z |
5710 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
5711 | TOKEN(0); | |
0d863452 RH |
5712 | s += 2; |
5713 | Eop(OP_SMARTMATCH); | |
5714 | } | |
78cdf107 Z |
5715 | s++; |
5716 | OPERATOR('~'); | |
378cc40b | 5717 | case ',': |
78cdf107 Z |
5718 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) |
5719 | TOKEN(0); | |
5720 | s++; | |
5721 | OPERATOR(','); | |
a0d0e21e LW |
5722 | case ':': |
5723 | if (s[1] == ':') { | |
5724 | len = 0; | |
0bfa2a8a | 5725 | goto just_a_word_zero_gv; |
a0d0e21e LW |
5726 | } |
5727 | s++; | |
09bef843 SB |
5728 | switch (PL_expect) { |
5729 | OP *attrs; | |
5db06880 NC |
5730 | #ifdef PERL_MAD |
5731 | I32 stuffstart; | |
5732 | #endif | |
09bef843 SB |
5733 | case XOPERATOR: |
5734 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
5735 | break; | |
5736 | PL_bufptr = s; /* update in case we back off */ | |
d83f38d8 | 5737 | if (*s == '=') { |
2dc78664 NC |
5738 | Perl_croak(aTHX_ |
5739 | "Use of := for an empty attribute list is not allowed"); | |
d83f38d8 | 5740 | } |
09bef843 SB |
5741 | goto grabattrs; |
5742 | case XATTRBLOCK: | |
5743 | PL_expect = XBLOCK; | |
5744 | goto grabattrs; | |
5745 | case XATTRTERM: | |
5746 | PL_expect = XTERMBLOCK; | |
5747 | grabattrs: | |
5db06880 NC |
5748 | #ifdef PERL_MAD |
5749 | stuffstart = s - SvPVX(PL_linestr) - 1; | |
5750 | #endif | |
29595ff2 | 5751 | s = PEEKSPACE(s); |
5f66b61c | 5752 | attrs = NULL; |
7e2040f0 | 5753 | while (isIDFIRST_lazy_if(s,UTF)) { |
90771dc0 | 5754 | I32 tmp; |
5cc237b8 | 5755 | SV *sv; |
09bef843 | 5756 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
5458a98a | 5757 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len, 0))) { |
f9829d6b GS |
5758 | if (tmp < 0) tmp = -tmp; |
5759 | switch (tmp) { | |
5760 | case KEY_or: | |
5761 | case KEY_and: | |
5762 | case KEY_for: | |
11baf631 | 5763 | case KEY_foreach: |
f9829d6b GS |
5764 | case KEY_unless: |
5765 | case KEY_if: | |
5766 | case KEY_while: | |
5767 | case KEY_until: | |
5768 | goto got_attrs; | |
5769 | default: | |
5770 | break; | |
5771 | } | |
5772 | } | |
89a5757c | 5773 | sv = newSVpvn_flags(s, len, UTF ? SVf_UTF8 : 0); |
09bef843 | 5774 | if (*d == '(') { |
4d68ffa0 | 5775 | d = scan_str(d,TRUE,TRUE,FALSE, FALSE); |
09bef843 | 5776 | if (!d) { |
09bef843 SB |
5777 | /* MUST advance bufptr here to avoid bogus |
5778 | "at end of line" context messages from yyerror(). | |
5779 | */ | |
5780 | PL_bufptr = s + len; | |
5781 | yyerror("Unterminated attribute parameter in attribute list"); | |
5782 | if (attrs) | |
5783 | op_free(attrs); | |
5cc237b8 | 5784 | sv_free(sv); |
bbf60fe6 | 5785 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
5786 | } |
5787 | } | |
5788 | if (PL_lex_stuff) { | |
09bef843 | 5789 | sv_catsv(sv, PL_lex_stuff); |
2fcb4757 | 5790 | attrs = op_append_elem(OP_LIST, attrs, |
09bef843 SB |
5791 | newSVOP(OP_CONST, 0, sv)); |
5792 | SvREFCNT_dec(PL_lex_stuff); | |
a0714e2c | 5793 | PL_lex_stuff = NULL; |
09bef843 SB |
5794 | } |
5795 | else { | |
5cc237b8 BS |
5796 | if (len == 6 && strnEQ(SvPVX(sv), "unique", len)) { |
5797 | sv_free(sv); | |
1108974d | 5798 | if (PL_in_my == KEY_our) { |
df9a6019 | 5799 | deprecate(":unique"); |
1108974d | 5800 | } |
bfed75c6 | 5801 | else |
371fce9b DM |
5802 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); |
5803 | } | |
5804 | ||
d3cea301 SB |
5805 | /* NOTE: any CV attrs applied here need to be part of |
5806 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
5cc237b8 BS |
5807 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "lvalue", len)) { |
5808 | sv_free(sv); | |
78f9721b | 5809 | CvLVALUE_on(PL_compcv); |
5cc237b8 BS |
5810 | } |
5811 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "locked", len)) { | |
5812 | sv_free(sv); | |
8e5dadda | 5813 | deprecate(":locked"); |
5cc237b8 BS |
5814 | } |
5815 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "method", len)) { | |
5816 | sv_free(sv); | |
78f9721b | 5817 | CvMETHOD_on(PL_compcv); |
5cc237b8 | 5818 | } |
78f9721b SM |
5819 | /* After we've set the flags, it could be argued that |
5820 | we don't need to do the attributes.pm-based setting | |
5821 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
5822 | flags. To experiment with that, uncomment the |
5823 | following "else". (Note that's already been | |
5824 | uncommented. That keeps the above-applied built-in | |
5825 | attributes from being intercepted (and possibly | |
5826 | rejected) by a package's attribute routines, but is | |
5827 | justified by the performance win for the common case | |
5828 | of applying only built-in attributes.) */ | |
0256094b | 5829 | else |
2fcb4757 | 5830 | attrs = op_append_elem(OP_LIST, attrs, |
78f9721b | 5831 | newSVOP(OP_CONST, 0, |
5cc237b8 | 5832 | sv)); |
09bef843 | 5833 | } |
29595ff2 | 5834 | s = PEEKSPACE(d); |
0120eecf | 5835 | if (*s == ':' && s[1] != ':') |
29595ff2 | 5836 | s = PEEKSPACE(s+1); |
0120eecf GS |
5837 | else if (s == d) |
5838 | break; /* require real whitespace or :'s */ | |
29595ff2 | 5839 | /* XXX losing whitespace on sequential attributes here */ |
09bef843 | 5840 | } |
90771dc0 NC |
5841 | { |
5842 | const char tmp | |
5843 | = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ | |
5844 | if (*s != ';' && *s != '}' && *s != tmp | |
5845 | && (tmp != '=' || *s != ')')) { | |
5846 | const char q = ((*s == '\'') ? '"' : '\''); | |
5847 | /* If here for an expression, and parsed no attrs, back | |
5848 | off. */ | |
5849 | if (tmp == '=' && !attrs) { | |
5850 | s = PL_bufptr; | |
5851 | break; | |
5852 | } | |
5853 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
5854 | context messages from yyerror(). | |
5855 | */ | |
5856 | PL_bufptr = s; | |
10edeb5d JH |
5857 | yyerror( (const char *) |
5858 | (*s | |
5859 | ? Perl_form(aTHX_ "Invalid separator character " | |
5860 | "%c%c%c in attribute list", q, *s, q) | |
5861 | : "Unterminated attribute list" ) ); | |
90771dc0 NC |
5862 | if (attrs) |
5863 | op_free(attrs); | |
5864 | OPERATOR(':'); | |
09bef843 | 5865 | } |
09bef843 | 5866 | } |
f9829d6b | 5867 | got_attrs: |
09bef843 | 5868 | if (attrs) { |
cd81e915 | 5869 | start_force(PL_curforce); |
9ded7720 | 5870 | NEXTVAL_NEXTTOKE.opval = attrs; |
cd81e915 | 5871 | CURMAD('_', PL_nextwhite); |
89122651 | 5872 | force_next(THING); |
5db06880 NC |
5873 | } |
5874 | #ifdef PERL_MAD | |
5875 | if (PL_madskills) { | |
cd81e915 | 5876 | PL_thistoken = newSVpvn(SvPVX(PL_linestr) + stuffstart, |
5db06880 | 5877 | (s - SvPVX(PL_linestr)) - stuffstart); |
09bef843 | 5878 | } |
5db06880 | 5879 | #endif |
09bef843 SB |
5880 | TOKEN(COLONATTR); |
5881 | } | |
78cdf107 Z |
5882 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) { |
5883 | s--; | |
5884 | TOKEN(0); | |
5885 | } | |
5886 | PL_lex_allbrackets--; | |
a0d0e21e | 5887 | OPERATOR(':'); |
8990e307 LW |
5888 | case '(': |
5889 | s++; | |
3280af22 NIS |
5890 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
5891 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 5892 | else |
3280af22 | 5893 | PL_expect = XTERM; |
29595ff2 | 5894 | s = SKIPSPACE1(s); |
78cdf107 | 5895 | PL_lex_allbrackets++; |
a0d0e21e | 5896 | TOKEN('('); |
378cc40b | 5897 | case ';': |
78cdf107 Z |
5898 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
5899 | TOKEN(0); | |
f4dd75d9 | 5900 | CLINE; |
78cdf107 Z |
5901 | s++; |
5902 | OPERATOR(';'); | |
378cc40b | 5903 | case ')': |
78cdf107 Z |
5904 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) |
5905 | TOKEN(0); | |
5906 | s++; | |
5907 | PL_lex_allbrackets--; | |
5908 | s = SKIPSPACE1(s); | |
5909 | if (*s == '{') | |
5910 | PREBLOCK(')'); | |
5911 | TERM(')'); | |
79072805 | 5912 | case ']': |
a7aaec61 Z |
5913 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
5914 | TOKEN(0); | |
79072805 | 5915 | s++; |
3280af22 | 5916 | if (PL_lex_brackets <= 0) |
d98d5fff | 5917 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 5918 | else |
3280af22 | 5919 | --PL_lex_brackets; |
78cdf107 | 5920 | PL_lex_allbrackets--; |
3280af22 NIS |
5921 | if (PL_lex_state == LEX_INTERPNORMAL) { |
5922 | if (PL_lex_brackets == 0) { | |
02255c60 FC |
5923 | if (*s == '-' && s[1] == '>') |
5924 | PL_lex_state = LEX_INTERPENDMAYBE; | |
5925 | else if (*s != '[' && *s != '{') | |
3280af22 | 5926 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
5927 | } |
5928 | } | |
4633a7c4 | 5929 | TERM(']'); |
79072805 | 5930 | case '{': |
79072805 | 5931 | s++; |
eaf6a13d | 5932 | leftbracket: |
3280af22 | 5933 | if (PL_lex_brackets > 100) { |
8edd5f42 | 5934 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 5935 | } |
3280af22 | 5936 | switch (PL_expect) { |
a0d0e21e | 5937 | case XTERM: |
819b004e | 5938 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5939 | PL_lex_allbrackets++; |
79072805 | 5940 | OPERATOR(HASHBRACK); |
a0d0e21e | 5941 | case XOPERATOR: |
bf4acbe4 | 5942 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 5943 | s++; |
44a8e56a | 5944 | d = s; |
3280af22 NIS |
5945 | PL_tokenbuf[0] = '\0'; |
5946 | if (d < PL_bufend && *d == '-') { | |
5947 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 5948 | d++; |
bf4acbe4 | 5949 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 5950 | d++; |
5951 | } | |
7e2040f0 | 5952 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 5953 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 5954 | FALSE, &len); |
bf4acbe4 | 5955 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
5956 | d++; |
5957 | if (*d == '}') { | |
f54cb97a | 5958 | const char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 5959 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
5960 | if (minus) | |
5961 | force_next('-'); | |
748a9306 LW |
5962 | } |
5963 | } | |
5964 | /* FALL THROUGH */ | |
09bef843 | 5965 | case XATTRBLOCK: |
748a9306 | 5966 | case XBLOCK: |
3280af22 | 5967 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
78cdf107 | 5968 | PL_lex_allbrackets++; |
3280af22 | 5969 | PL_expect = XSTATE; |
a0d0e21e | 5970 | break; |
09bef843 | 5971 | case XATTRTERM: |
a0d0e21e | 5972 | case XTERMBLOCK: |
3280af22 | 5973 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5974 | PL_lex_allbrackets++; |
3280af22 | 5975 | PL_expect = XSTATE; |
a0d0e21e LW |
5976 | break; |
5977 | default: { | |
f54cb97a | 5978 | const char *t; |
3280af22 NIS |
5979 | if (PL_oldoldbufptr == PL_last_lop) |
5980 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 5981 | else |
3280af22 | 5982 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5983 | PL_lex_allbrackets++; |
29595ff2 | 5984 | s = SKIPSPACE1(s); |
8452ff4b SB |
5985 | if (*s == '}') { |
5986 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
5987 | PL_expect = XTERM; | |
5988 | /* This hack is to get the ${} in the message. */ | |
5989 | PL_bufptr = s+1; | |
5990 | yyerror("syntax error"); | |
5991 | break; | |
5992 | } | |
a0d0e21e | 5993 | OPERATOR(HASHBRACK); |
8452ff4b | 5994 | } |
b8a4b1be GS |
5995 | /* This hack serves to disambiguate a pair of curlies |
5996 | * as being a block or an anon hash. Normally, expectation | |
5997 | * determines that, but in cases where we're not in a | |
5998 | * position to expect anything in particular (like inside | |
5999 | * eval"") we have to resolve the ambiguity. This code | |
6000 | * covers the case where the first term in the curlies is a | |
6001 | * quoted string. Most other cases need to be explicitly | |
a0288114 | 6002 | * disambiguated by prepending a "+" before the opening |
b8a4b1be GS |
6003 | * curly in order to force resolution as an anon hash. |
6004 | * | |
6005 | * XXX should probably propagate the outer expectation | |
6006 | * into eval"" to rely less on this hack, but that could | |
6007 | * potentially break current behavior of eval"". | |
6008 | * GSAR 97-07-21 | |
6009 | */ | |
6010 | t = s; | |
6011 | if (*s == '\'' || *s == '"' || *s == '`') { | |
6012 | /* common case: get past first string, handling escapes */ | |
3280af22 | 6013 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
6014 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
6015 | t++; | |
6016 | t++; | |
a0d0e21e | 6017 | } |
b8a4b1be | 6018 | else if (*s == 'q') { |
3280af22 | 6019 | if (++t < PL_bufend |
0eb30aeb | 6020 | && (!isWORDCHAR(*t) |
3280af22 | 6021 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0eb30aeb | 6022 | && !isWORDCHAR(*t)))) |
0505442f | 6023 | { |
abc667d1 | 6024 | /* skip q//-like construct */ |
f54cb97a | 6025 | const char *tmps; |
b8a4b1be GS |
6026 | char open, close, term; |
6027 | I32 brackets = 1; | |
6028 | ||
3280af22 | 6029 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 6030 | t++; |
abc667d1 DM |
6031 | /* check for q => */ |
6032 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
6033 | OPERATOR(HASHBRACK); | |
6034 | } | |
b8a4b1be GS |
6035 | term = *t; |
6036 | open = term; | |
6037 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
6038 | term = tmps[5]; | |
6039 | close = term; | |
6040 | if (open == close) | |
3280af22 NIS |
6041 | for (t++; t < PL_bufend; t++) { |
6042 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 6043 | t++; |
6d07e5e9 | 6044 | else if (*t == open) |
b8a4b1be GS |
6045 | break; |
6046 | } | |
abc667d1 | 6047 | else { |
3280af22 NIS |
6048 | for (t++; t < PL_bufend; t++) { |
6049 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 6050 | t++; |
6d07e5e9 | 6051 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
6052 | break; |
6053 | else if (*t == open) | |
6054 | brackets++; | |
6055 | } | |
abc667d1 DM |
6056 | } |
6057 | t++; | |
b8a4b1be | 6058 | } |
abc667d1 DM |
6059 | else |
6060 | /* skip plain q word */ | |
8a2bca12 | 6061 | while (t < PL_bufend && isWORDCHAR_lazy_if(t,UTF)) |
abc667d1 | 6062 | t += UTF8SKIP(t); |
a0d0e21e | 6063 | } |
8a2bca12 | 6064 | else if (isWORDCHAR_lazy_if(t,UTF)) { |
0505442f | 6065 | t += UTF8SKIP(t); |
8a2bca12 | 6066 | while (t < PL_bufend && isWORDCHAR_lazy_if(t,UTF)) |
0505442f | 6067 | t += UTF8SKIP(t); |
a0d0e21e | 6068 | } |
3280af22 | 6069 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 6070 | t++; |
b8a4b1be GS |
6071 | /* if comma follows first term, call it an anon hash */ |
6072 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 6073 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 6074 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 6075 | OPERATOR(HASHBRACK); |
3280af22 | 6076 | if (PL_expect == XREF) |
4e4e412b | 6077 | PL_expect = XTERM; |
a0d0e21e | 6078 | else { |
3280af22 NIS |
6079 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
6080 | PL_expect = XSTATE; | |
a0d0e21e | 6081 | } |
8990e307 | 6082 | } |
a0d0e21e | 6083 | break; |
463ee0b2 | 6084 | } |
6154021b | 6085 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 | 6086 | if (isSPACE(*s) || *s == '#') |
3280af22 | 6087 | PL_copline = NOLINE; /* invalidate current command line number */ |
7c70caa5 | 6088 | TOKEN(formbrack ? '=' : '{'); |
378cc40b | 6089 | case '}': |
a7aaec61 Z |
6090 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
6091 | TOKEN(0); | |
79072805 LW |
6092 | rightbracket: |
6093 | s++; | |
3280af22 | 6094 | if (PL_lex_brackets <= 0) |
d98d5fff | 6095 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 6096 | else |
3280af22 | 6097 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
78cdf107 | 6098 | PL_lex_allbrackets--; |
3280af22 NIS |
6099 | if (PL_lex_state == LEX_INTERPNORMAL) { |
6100 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
6101 | if (PL_expect & XFAKEBRACK) { |
6102 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
6103 | PL_lex_state = LEX_INTERPEND; |
6104 | PL_bufptr = s; | |
5db06880 NC |
6105 | #if 0 |
6106 | if (PL_madskills) { | |
cd81e915 | 6107 | if (!PL_thiswhite) |
6b29d1f5 | 6108 | PL_thiswhite = newSVpvs(""); |
76f68e9b | 6109 | sv_catpvs(PL_thiswhite,"}"); |
5db06880 NC |
6110 | } |
6111 | #endif | |
cea2e8a9 | 6112 | return yylex(); /* ignore fake brackets */ |
79072805 | 6113 | } |
f777953f | 6114 | if (PL_lex_inwhat == OP_SUBST && PL_lex_repl == PL_linestr |
6b00f562 FC |
6115 | && SvEVALED(PL_lex_repl)) |
6116 | PL_lex_state = LEX_INTERPEND; | |
6117 | else if (*s == '-' && s[1] == '>') | |
3280af22 | 6118 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 6119 | else if (*s != '[' && *s != '{') |
3280af22 | 6120 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
6121 | } |
6122 | } | |
9059aa12 LW |
6123 | if (PL_expect & XFAKEBRACK) { |
6124 | PL_expect &= XENUMMASK; | |
3280af22 | 6125 | PL_bufptr = s; |
cea2e8a9 | 6126 | return yylex(); /* ignore fake brackets */ |
748a9306 | 6127 | } |
cd81e915 | 6128 | start_force(PL_curforce); |
5db06880 NC |
6129 | if (PL_madskills) { |
6130 | curmad('X', newSVpvn(s-1,1)); | |
cd81e915 | 6131 | CURMAD('_', PL_thiswhite); |
5db06880 | 6132 | } |
7c70caa5 | 6133 | force_next(formbrack ? '.' : '}'); |
583c9d5c | 6134 | if (formbrack) LEAVE; |
5db06880 | 6135 | #ifdef PERL_MAD |
1cac5c33 | 6136 | if (PL_madskills && !PL_thistoken) |
6b29d1f5 | 6137 | PL_thistoken = newSVpvs(""); |
5db06880 | 6138 | #endif |
705fe0e5 FC |
6139 | if (formbrack == 2) { /* means . where arguments were expected */ |
6140 | start_force(PL_curforce); | |
6141 | force_next(';'); | |
96f9b782 | 6142 | TOKEN(FORMRBRACK); |
705fe0e5 | 6143 | } |
79072805 | 6144 | TOKEN(';'); |
378cc40b LW |
6145 | case '&': |
6146 | s++; | |
78cdf107 Z |
6147 | if (*s++ == '&') { |
6148 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
6149 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
6150 | s -= 2; | |
6151 | TOKEN(0); | |
6152 | } | |
a0d0e21e | 6153 | AOPERATOR(ANDAND); |
78cdf107 | 6154 | } |
378cc40b | 6155 | s--; |
3280af22 | 6156 | if (PL_expect == XOPERATOR) { |
041457d9 DM |
6157 | if (PL_bufptr == PL_linestart && ckWARN(WARN_SEMICOLON) |
6158 | && isIDFIRST_lazy_if(s,UTF)) | |
7e2040f0 | 6159 | { |
57843af0 | 6160 | CopLINE_dec(PL_curcop); |
f1f66076 | 6161 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 6162 | CopLINE_inc(PL_curcop); |
463ee0b2 | 6163 | } |
78cdf107 Z |
6164 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6165 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
6166 | s--; | |
6167 | TOKEN(0); | |
6168 | } | |
79072805 | 6169 | BAop(OP_BIT_AND); |
463ee0b2 | 6170 | } |
79072805 | 6171 | |
c07656ed FC |
6172 | PL_tokenbuf[0] = '&'; |
6173 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf + 1, | |
6174 | sizeof PL_tokenbuf - 1, TRUE); | |
6175 | if (PL_tokenbuf[1]) { | |
3280af22 | 6176 | PL_expect = XOPERATOR; |
60ac52eb | 6177 | force_ident_maybe_lex('&'); |
463ee0b2 | 6178 | } |
79072805 LW |
6179 | else |
6180 | PREREF('&'); | |
6154021b | 6181 | pl_yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
6182 | TERM('&'); |
6183 | ||
378cc40b LW |
6184 | case '|': |
6185 | s++; | |
78cdf107 Z |
6186 | if (*s++ == '|') { |
6187 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
6188 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
6189 | s -= 2; | |
6190 | TOKEN(0); | |
6191 | } | |
a0d0e21e | 6192 | AOPERATOR(OROR); |
78cdf107 | 6193 | } |
378cc40b | 6194 | s--; |
78cdf107 Z |
6195 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6196 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
6197 | s--; | |
6198 | TOKEN(0); | |
6199 | } | |
79072805 | 6200 | BOop(OP_BIT_OR); |
378cc40b LW |
6201 | case '=': |
6202 | s++; | |
748a9306 | 6203 | { |
90771dc0 | 6204 | const char tmp = *s++; |
78cdf107 Z |
6205 | if (tmp == '=') { |
6206 | if (!PL_lex_allbrackets && | |
6207 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6208 | s -= 2; | |
6209 | TOKEN(0); | |
6210 | } | |
90771dc0 | 6211 | Eop(OP_EQ); |
78cdf107 Z |
6212 | } |
6213 | if (tmp == '>') { | |
6214 | if (!PL_lex_allbrackets && | |
6215 | PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) { | |
6216 | s -= 2; | |
6217 | TOKEN(0); | |
6218 | } | |
90771dc0 | 6219 | OPERATOR(','); |
78cdf107 | 6220 | } |
90771dc0 NC |
6221 | if (tmp == '~') |
6222 | PMop(OP_MATCH); | |
6223 | if (tmp && isSPACE(*s) && ckWARN(WARN_SYNTAX) | |
6224 | && strchr("+-*/%.^&|<",tmp)) | |
6225 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
6226 | "Reversed %c= operator",(int)tmp); | |
6227 | s--; | |
6228 | if (PL_expect == XSTATE && isALPHA(tmp) && | |
6229 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
6230 | { | |
62e4c90a | 6231 | if ((PL_in_eval && !PL_rsfp && !PL_parser->filtered) |
4a7239ff | 6232 | || PL_lex_state != LEX_NORMAL) { |
90771dc0 NC |
6233 | d = PL_bufend; |
6234 | while (s < d) { | |
6235 | if (*s++ == '\n') { | |
6236 | incline(s); | |
6237 | if (strnEQ(s,"=cut",4)) { | |
6238 | s = strchr(s,'\n'); | |
6239 | if (s) | |
6240 | s++; | |
6241 | else | |
6242 | s = d; | |
6243 | incline(s); | |
6244 | goto retry; | |
6245 | } | |
6246 | } | |
a5f75d66 | 6247 | } |
90771dc0 | 6248 | goto retry; |
a5f75d66 | 6249 | } |
5db06880 NC |
6250 | #ifdef PERL_MAD |
6251 | if (PL_madskills) { | |
cd81e915 | 6252 | if (!PL_thiswhite) |
6b29d1f5 | 6253 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 6254 | sv_catpvn(PL_thiswhite, PL_linestart, |
5db06880 NC |
6255 | PL_bufend - PL_linestart); |
6256 | } | |
6257 | #endif | |
90771dc0 | 6258 | s = PL_bufend; |
737c24fc | 6259 | PL_parser->in_pod = 1; |
90771dc0 | 6260 | goto retry; |
a5f75d66 | 6261 | } |
a0d0e21e | 6262 | } |
64a40898 | 6263 | if (PL_expect == XBLOCK) { |
c35e046a | 6264 | const char *t = s; |
51882d45 | 6265 | #ifdef PERL_STRICT_CR |
c35e046a | 6266 | while (SPACE_OR_TAB(*t)) |
51882d45 | 6267 | #else |
c35e046a | 6268 | while (SPACE_OR_TAB(*t) || *t == '\r') |
51882d45 | 6269 | #endif |
c35e046a | 6270 | t++; |
a0d0e21e | 6271 | if (*t == '\n' || *t == '#') { |
705fe0e5 | 6272 | formbrack = 1; |
583c9d5c FC |
6273 | ENTER; |
6274 | SAVEI8(PL_parser->form_lex_state); | |
64a40898 | 6275 | SAVEI32(PL_lex_formbrack); |
583c9d5c | 6276 | PL_parser->form_lex_state = PL_lex_state; |
64a40898 | 6277 | PL_lex_formbrack = PL_lex_brackets + 1; |
a0d0e21e LW |
6278 | goto leftbracket; |
6279 | } | |
79072805 | 6280 | } |
78cdf107 Z |
6281 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { |
6282 | s--; | |
6283 | TOKEN(0); | |
6284 | } | |
6154021b | 6285 | pl_yylval.ival = 0; |
a0d0e21e | 6286 | OPERATOR(ASSIGNOP); |
378cc40b LW |
6287 | case '!': |
6288 | s++; | |
90771dc0 NC |
6289 | { |
6290 | const char tmp = *s++; | |
6291 | if (tmp == '=') { | |
6292 | /* was this !=~ where !~ was meant? | |
6293 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
6294 | ||
6295 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { | |
6296 | const char *t = s+1; | |
6297 | ||
6298 | while (t < PL_bufend && isSPACE(*t)) | |
6299 | ++t; | |
6300 | ||
6301 | if (*t == '/' || *t == '?' || | |
6302 | ((*t == 'm' || *t == 's' || *t == 'y') | |
0eb30aeb KW |
6303 | && !isWORDCHAR(t[1])) || |
6304 | (*t == 't' && t[1] == 'r' && !isWORDCHAR(t[2]))) | |
90771dc0 NC |
6305 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
6306 | "!=~ should be !~"); | |
6307 | } | |
78cdf107 Z |
6308 | if (!PL_lex_allbrackets && |
6309 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6310 | s -= 2; | |
6311 | TOKEN(0); | |
6312 | } | |
90771dc0 NC |
6313 | Eop(OP_NE); |
6314 | } | |
6315 | if (tmp == '~') | |
6316 | PMop(OP_NOT); | |
6317 | } | |
378cc40b LW |
6318 | s--; |
6319 | OPERATOR('!'); | |
6320 | case '<': | |
3280af22 | 6321 | if (PL_expect != XOPERATOR) { |
93a17b20 | 6322 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 6323 | check_uni(); |
79072805 LW |
6324 | if (s[1] == '<') |
6325 | s = scan_heredoc(s); | |
6326 | else | |
6327 | s = scan_inputsymbol(s); | |
78a635de FC |
6328 | PL_expect = XOPERATOR; |
6329 | TOKEN(sublex_start()); | |
378cc40b LW |
6330 | } |
6331 | s++; | |
90771dc0 NC |
6332 | { |
6333 | char tmp = *s++; | |
78cdf107 Z |
6334 | if (tmp == '<') { |
6335 | if (*s == '=' && !PL_lex_allbrackets && | |
6336 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6337 | s -= 2; | |
6338 | TOKEN(0); | |
6339 | } | |
90771dc0 | 6340 | SHop(OP_LEFT_SHIFT); |
78cdf107 | 6341 | } |
90771dc0 NC |
6342 | if (tmp == '=') { |
6343 | tmp = *s++; | |
78cdf107 Z |
6344 | if (tmp == '>') { |
6345 | if (!PL_lex_allbrackets && | |
6346 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6347 | s -= 3; | |
6348 | TOKEN(0); | |
6349 | } | |
90771dc0 | 6350 | Eop(OP_NCMP); |
78cdf107 | 6351 | } |
90771dc0 | 6352 | s--; |
78cdf107 Z |
6353 | if (!PL_lex_allbrackets && |
6354 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6355 | s -= 2; | |
6356 | TOKEN(0); | |
6357 | } | |
90771dc0 NC |
6358 | Rop(OP_LE); |
6359 | } | |
395c3793 | 6360 | } |
378cc40b | 6361 | s--; |
78cdf107 Z |
6362 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
6363 | s--; | |
6364 | TOKEN(0); | |
6365 | } | |
79072805 | 6366 | Rop(OP_LT); |
378cc40b LW |
6367 | case '>': |
6368 | s++; | |
90771dc0 NC |
6369 | { |
6370 | const char tmp = *s++; | |
78cdf107 Z |
6371 | if (tmp == '>') { |
6372 | if (*s == '=' && !PL_lex_allbrackets && | |
6373 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6374 | s -= 2; | |
6375 | TOKEN(0); | |
6376 | } | |
90771dc0 | 6377 | SHop(OP_RIGHT_SHIFT); |
78cdf107 Z |
6378 | } |
6379 | else if (tmp == '=') { | |
6380 | if (!PL_lex_allbrackets && | |
6381 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6382 | s -= 2; | |
6383 | TOKEN(0); | |
6384 | } | |
90771dc0 | 6385 | Rop(OP_GE); |
78cdf107 | 6386 | } |
90771dc0 | 6387 | } |
378cc40b | 6388 | s--; |
78cdf107 Z |
6389 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
6390 | s--; | |
6391 | TOKEN(0); | |
6392 | } | |
79072805 | 6393 | Rop(OP_GT); |
378cc40b LW |
6394 | |
6395 | case '$': | |
bbce6d69 | 6396 | CLINE; |
6397 | ||
3280af22 NIS |
6398 | if (PL_expect == XOPERATOR) { |
6399 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6400 | return deprecate_commaless_var_list(); |
a0d0e21e | 6401 | } |
8990e307 | 6402 | } |
a0d0e21e | 6403 | |
c0b977fd | 6404 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-@", s[2]))) { |
3280af22 | 6405 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
6406 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
6407 | sizeof PL_tokenbuf - 1, FALSE); | |
6408 | if (PL_expect == XOPERATOR) | |
6409 | no_op("Array length", s); | |
3280af22 | 6410 | if (!PL_tokenbuf[1]) |
a0d0e21e | 6411 | PREREF(DOLSHARP); |
3280af22 | 6412 | PL_expect = XOPERATOR; |
60ac52eb | 6413 | force_ident_maybe_lex('#'); |
463ee0b2 | 6414 | TOKEN(DOLSHARP); |
79072805 | 6415 | } |
bbce6d69 | 6416 | |
3280af22 | 6417 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
6418 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
6419 | sizeof PL_tokenbuf - 1, FALSE); | |
6420 | if (PL_expect == XOPERATOR) | |
6421 | no_op("Scalar", s); | |
3280af22 NIS |
6422 | if (!PL_tokenbuf[1]) { |
6423 | if (s == PL_bufend) | |
bbce6d69 | 6424 | yyerror("Final $ should be \\$ or $name"); |
6425 | PREREF('$'); | |
8990e307 | 6426 | } |
a0d0e21e | 6427 | |
ff68c719 | 6428 | d = s; |
90771dc0 NC |
6429 | { |
6430 | const char tmp = *s; | |
ae28bb2a | 6431 | if (PL_lex_state == LEX_NORMAL || PL_lex_brackets) |
29595ff2 | 6432 | s = SKIPSPACE1(s); |
ff68c719 | 6433 | |
90771dc0 NC |
6434 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) |
6435 | && intuit_more(s)) { | |
6436 | if (*s == '[') { | |
6437 | PL_tokenbuf[0] = '@'; | |
6438 | if (ckWARN(WARN_SYNTAX)) { | |
c35e046a AL |
6439 | char *t = s+1; |
6440 | ||
8a2bca12 | 6441 | while (isSPACE(*t) || isWORDCHAR_lazy_if(t,UTF) || *t == '$') |
c35e046a | 6442 | t++; |
90771dc0 | 6443 | if (*t++ == ',') { |
29595ff2 | 6444 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
90771dc0 NC |
6445 | while (t < PL_bufend && *t != ']') |
6446 | t++; | |
9014280d | 6447 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
90771dc0 | 6448 | "Multidimensional syntax %.*s not supported", |
36c7798d | 6449 | (int)((t - PL_bufptr) + 1), PL_bufptr); |
90771dc0 | 6450 | } |
748a9306 | 6451 | } |
93a17b20 | 6452 | } |
90771dc0 NC |
6453 | else if (*s == '{') { |
6454 | char *t; | |
6455 | PL_tokenbuf[0] = '%'; | |
6456 | if (strEQ(PL_tokenbuf+1, "SIG") && ckWARN(WARN_SYNTAX) | |
6457 | && (t = strchr(s, '}')) && (t = strchr(t, '='))) | |
6458 | { | |
6459 | char tmpbuf[sizeof PL_tokenbuf]; | |
c35e046a AL |
6460 | do { |
6461 | t++; | |
6462 | } while (isSPACE(*t)); | |
90771dc0 | 6463 | if (isIDFIRST_lazy_if(t,UTF)) { |
780a5241 | 6464 | STRLEN len; |
90771dc0 | 6465 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, |
780a5241 | 6466 | &len); |
c35e046a AL |
6467 | while (isSPACE(*t)) |
6468 | t++; | |
4c01a014 BF |
6469 | if (*t == ';' |
6470 | && get_cvn_flags(tmpbuf, len, UTF ? SVf_UTF8 : 0)) | |
90771dc0 | 6471 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
4c01a014 BF |
6472 | "You need to quote \"%"SVf"\"", |
6473 | SVfARG(newSVpvn_flags(tmpbuf, len, | |
6474 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
90771dc0 NC |
6475 | } |
6476 | } | |
6477 | } | |
93a17b20 | 6478 | } |
bbce6d69 | 6479 | |
90771dc0 NC |
6480 | PL_expect = XOPERATOR; |
6481 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { | |
6482 | const bool islop = (PL_last_lop == PL_oldoldbufptr); | |
6483 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
6484 | PL_expect = XOPERATOR; | |
6485 | else if (strchr("$@\"'`q", *s)) | |
6486 | PL_expect = XTERM; /* e.g. print $fh "foo" */ | |
6487 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) | |
6488 | PL_expect = XTERM; /* e.g. print $fh &sub */ | |
6489 | else if (isIDFIRST_lazy_if(s,UTF)) { | |
6490 | char tmpbuf[sizeof PL_tokenbuf]; | |
6491 | int t2; | |
6492 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
5458a98a | 6493 | if ((t2 = keyword(tmpbuf, len, 0))) { |
90771dc0 NC |
6494 | /* binary operators exclude handle interpretations */ |
6495 | switch (t2) { | |
6496 | case -KEY_x: | |
6497 | case -KEY_eq: | |
6498 | case -KEY_ne: | |
6499 | case -KEY_gt: | |
6500 | case -KEY_lt: | |
6501 | case -KEY_ge: | |
6502 | case -KEY_le: | |
6503 | case -KEY_cmp: | |
6504 | break; | |
6505 | default: | |
6506 | PL_expect = XTERM; /* e.g. print $fh length() */ | |
6507 | break; | |
6508 | } | |
6509 | } | |
6510 | else { | |
6511 | PL_expect = XTERM; /* e.g. print $fh subr() */ | |
84902520 TB |
6512 | } |
6513 | } | |
90771dc0 NC |
6514 | else if (isDIGIT(*s)) |
6515 | PL_expect = XTERM; /* e.g. print $fh 3 */ | |
6516 | else if (*s == '.' && isDIGIT(s[1])) | |
6517 | PL_expect = XTERM; /* e.g. print $fh .3 */ | |
6518 | else if ((*s == '?' || *s == '-' || *s == '+') | |
6519 | && !isSPACE(s[1]) && s[1] != '=') | |
6520 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
6521 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' | |
6522 | && s[1] != '/') | |
6523 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
6524 | XXX except DORDOR operator | |
6525 | */ | |
6526 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) | |
6527 | && s[2] != '=') | |
6528 | PL_expect = XTERM; /* print $fh <<"EOF" */ | |
93a17b20 | 6529 | } |
bbce6d69 | 6530 | } |
60ac52eb | 6531 | force_ident_maybe_lex('$'); |
79072805 | 6532 | TOKEN('$'); |
378cc40b LW |
6533 | |
6534 | case '@': | |
3280af22 | 6535 | if (PL_expect == XOPERATOR) |
bbce6d69 | 6536 | no_op("Array", s); |
3280af22 NIS |
6537 | PL_tokenbuf[0] = '@'; |
6538 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
6539 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 6540 | PREREF('@'); |
6541 | } | |
3280af22 | 6542 | if (PL_lex_state == LEX_NORMAL) |
29595ff2 | 6543 | s = SKIPSPACE1(s); |
3280af22 | 6544 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 6545 | if (*s == '{') |
3280af22 | 6546 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
6547 | |
6548 | /* Warn about @ where they meant $. */ | |
041457d9 DM |
6549 | if (*s == '[' || *s == '{') { |
6550 | if (ckWARN(WARN_SYNTAX)) { | |
f54cb97a | 6551 | const char *t = s + 1; |
8a2bca12 | 6552 | while (*t && (isWORDCHAR_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
b9e186cd | 6553 | t += UTF ? UTF8SKIP(t) : 1; |
a0d0e21e LW |
6554 | if (*t == '}' || *t == ']') { |
6555 | t++; | |
29595ff2 | 6556 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
dcbac5bb | 6557 | /* diag_listed_as: Scalar value @%s[%s] better written as $%s[%s] */ |
9014280d | 6558 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
b9e186cd BF |
6559 | "Scalar value %"SVf" better written as $%"SVf, |
6560 | SVfARG(newSVpvn_flags(PL_bufptr, (STRLEN)(t-PL_bufptr), | |
6561 | SVs_TEMP | (UTF ? SVf_UTF8 : 0 ))), | |
6562 | SVfARG(newSVpvn_flags(PL_bufptr+1, (STRLEN)(t-PL_bufptr-1), | |
6563 | SVs_TEMP | (UTF ? SVf_UTF8 : 0 )))); | |
a0d0e21e | 6564 | } |
93a17b20 LW |
6565 | } |
6566 | } | |
463ee0b2 | 6567 | } |
60ac52eb FC |
6568 | PL_expect = XOPERATOR; |
6569 | force_ident_maybe_lex('@'); | |
79072805 | 6570 | TERM('@'); |
378cc40b | 6571 | |
c963b151 | 6572 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 | 6573 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
78cdf107 Z |
6574 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6575 | (s[2] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) | |
6576 | TOKEN(0); | |
6f33ba73 RGS |
6577 | s += 2; |
6578 | AOPERATOR(DORDOR); | |
6579 | } | |
c963b151 | 6580 | case '?': /* may either be conditional or pattern */ |
be25f609 | 6581 | if (PL_expect == XOPERATOR) { |
90771dc0 | 6582 | char tmp = *s++; |
c963b151 | 6583 | if(tmp == '?') { |
78cdf107 Z |
6584 | if (!PL_lex_allbrackets && |
6585 | PL_lex_fakeeof >= LEX_FAKEEOF_IFELSE) { | |
6586 | s--; | |
6587 | TOKEN(0); | |
6588 | } | |
6589 | PL_lex_allbrackets++; | |
be25f609 | 6590 | OPERATOR('?'); |
c963b151 BD |
6591 | } |
6592 | else { | |
6593 | tmp = *s++; | |
6594 | if(tmp == '/') { | |
6595 | /* A // operator. */ | |
78cdf107 Z |
6596 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6597 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : | |
6598 | LEX_FAKEEOF_LOGIC)) { | |
6599 | s -= 2; | |
6600 | TOKEN(0); | |
6601 | } | |
c963b151 BD |
6602 | AOPERATOR(DORDOR); |
6603 | } | |
6604 | else { | |
6605 | s--; | |
78cdf107 Z |
6606 | if (*s == '=' && !PL_lex_allbrackets && |
6607 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6608 | s--; | |
6609 | TOKEN(0); | |
6610 | } | |
c963b151 BD |
6611 | Mop(OP_DIVIDE); |
6612 | } | |
6613 | } | |
6614 | } | |
6615 | else { | |
6616 | /* Disable warning on "study /blah/" */ | |
6617 | if (PL_oldoldbufptr == PL_last_uni | |
6618 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
6619 | || memNE(PL_last_uni, "study", 5) | |
8a2bca12 | 6620 | || isWORDCHAR_lazy_if(PL_last_uni+5,UTF) |
c963b151 BD |
6621 | )) |
6622 | check_uni(); | |
725a61d7 Z |
6623 | if (*s == '?') |
6624 | deprecate("?PATTERN? without explicit operator"); | |
c963b151 BD |
6625 | s = scan_pat(s,OP_MATCH); |
6626 | TERM(sublex_start()); | |
6627 | } | |
378cc40b LW |
6628 | |
6629 | case '.': | |
51882d45 GS |
6630 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
6631 | #ifdef PERL_STRICT_CR | |
6632 | && s[1] == '\n' | |
6633 | #else | |
6634 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
6635 | #endif | |
6636 | && (s == PL_linestart || s[-1] == '\n') ) | |
6637 | { | |
3280af22 | 6638 | PL_expect = XSTATE; |
705fe0e5 | 6639 | formbrack = 2; /* dot seen where arguments expected */ |
79072805 LW |
6640 | goto rightbracket; |
6641 | } | |
be25f609 | 6642 | if (PL_expect == XSTATE && s[1] == '.' && s[2] == '.') { |
6643 | s += 3; | |
6644 | OPERATOR(YADAYADA); | |
6645 | } | |
3280af22 | 6646 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
90771dc0 | 6647 | char tmp = *s++; |
a687059c | 6648 | if (*s == tmp) { |
78cdf107 Z |
6649 | if (!PL_lex_allbrackets && |
6650 | PL_lex_fakeeof >= LEX_FAKEEOF_RANGE) { | |
6651 | s--; | |
6652 | TOKEN(0); | |
6653 | } | |
a687059c | 6654 | s++; |
2f3197b3 LW |
6655 | if (*s == tmp) { |
6656 | s++; | |
6154021b | 6657 | pl_yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
6658 | } |
6659 | else | |
6154021b | 6660 | pl_yylval.ival = 0; |
378cc40b | 6661 | OPERATOR(DOTDOT); |
a687059c | 6662 | } |
78cdf107 Z |
6663 | if (*s == '=' && !PL_lex_allbrackets && |
6664 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6665 | s--; | |
6666 | TOKEN(0); | |
6667 | } | |
79072805 | 6668 | Aop(OP_CONCAT); |
378cc40b LW |
6669 | } |
6670 | /* FALL THROUGH */ | |
6671 | case '0': case '1': case '2': case '3': case '4': | |
6672 | case '5': case '6': case '7': case '8': case '9': | |
6154021b | 6673 | s = scan_num(s, &pl_yylval); |
931e0695 | 6674 | DEBUG_T( { printbuf("### Saw number in %s\n", s); } ); |
3280af22 | 6675 | if (PL_expect == XOPERATOR) |
8990e307 | 6676 | no_op("Number",s); |
79072805 LW |
6677 | TERM(THING); |
6678 | ||
6679 | case '\'': | |
4d68ffa0 | 6680 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
931e0695 | 6681 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6682 | if (PL_expect == XOPERATOR) { |
6683 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6684 | return deprecate_commaless_var_list(); |
a0d0e21e | 6685 | } |
463ee0b2 | 6686 | else |
8990e307 | 6687 | no_op("String",s); |
463ee0b2 | 6688 | } |
79072805 | 6689 | if (!s) |
d4c19fe8 | 6690 | missingterm(NULL); |
6154021b | 6691 | pl_yylval.ival = OP_CONST; |
79072805 LW |
6692 | TERM(sublex_start()); |
6693 | ||
6694 | case '"': | |
4d68ffa0 | 6695 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
931e0695 | 6696 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6697 | if (PL_expect == XOPERATOR) { |
6698 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6699 | return deprecate_commaless_var_list(); |
a0d0e21e | 6700 | } |
463ee0b2 | 6701 | else |
8990e307 | 6702 | no_op("String",s); |
463ee0b2 | 6703 | } |
79072805 | 6704 | if (!s) |
d4c19fe8 | 6705 | missingterm(NULL); |
6154021b | 6706 | pl_yylval.ival = OP_CONST; |
cfd0369c NC |
6707 | /* FIXME. I think that this can be const if char *d is replaced by |
6708 | more localised variables. */ | |
3280af22 | 6709 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 6710 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
6154021b | 6711 | pl_yylval.ival = OP_STRINGIFY; |
4633a7c4 LW |
6712 | break; |
6713 | } | |
6714 | } | |
79072805 LW |
6715 | TERM(sublex_start()); |
6716 | ||
6717 | case '`': | |
4d68ffa0 | 6718 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
931e0695 | 6719 | DEBUG_T( { printbuf("### Saw backtick string before %s\n", s); } ); |
3280af22 | 6720 | if (PL_expect == XOPERATOR) |
8990e307 | 6721 | no_op("Backticks",s); |
79072805 | 6722 | if (!s) |
d4c19fe8 | 6723 | missingterm(NULL); |
9b201d7d | 6724 | readpipe_override(); |
79072805 LW |
6725 | TERM(sublex_start()); |
6726 | ||
6727 | case '\\': | |
6728 | s++; | |
a2a5de95 NC |
6729 | if (PL_lex_inwhat && isDIGIT(*s)) |
6730 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", | |
6731 | *s, *s); | |
3280af22 | 6732 | if (PL_expect == XOPERATOR) |
8990e307 | 6733 | no_op("Backslash",s); |
79072805 LW |
6734 | OPERATOR(REFGEN); |
6735 | ||
a7cb1f99 | 6736 | case 'v': |
e526c9e6 | 6737 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
f54cb97a | 6738 | char *start = s + 2; |
dd629d5b | 6739 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
6740 | start++; |
6741 | if (*start == '.' && isDIGIT(start[1])) { | |
6154021b | 6742 | s = scan_num(s, &pl_yylval); |
a7cb1f99 GS |
6743 | TERM(THING); |
6744 | } | |
e9d2327d FC |
6745 | else if ((*start == ':' && start[1] == ':') |
6746 | || (PL_expect == XSTATE && *start == ':')) | |
6747 | goto keylookup; | |
6748 | else if (PL_expect == XSTATE) { | |
6749 | d = start; | |
6750 | while (d < PL_bufend && isSPACE(*d)) d++; | |
6751 | if (*d == ':') goto keylookup; | |
6752 | } | |
e526c9e6 | 6753 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
e9d2327d | 6754 | if (!isALPHA(*start) && (PL_expect == XTERM |
6f33ba73 RGS |
6755 | || PL_expect == XREF || PL_expect == XSTATE |
6756 | || PL_expect == XTERMORDORDOR)) { | |
af9f5953 BF |
6757 | GV *const gv = gv_fetchpvn_flags(s, start - s, |
6758 | UTF ? SVf_UTF8 : 0, SVt_PVCV); | |
e526c9e6 | 6759 | if (!gv) { |
6154021b | 6760 | s = scan_num(s, &pl_yylval); |
e526c9e6 GS |
6761 | TERM(THING); |
6762 | } | |
6763 | } | |
a7cb1f99 GS |
6764 | } |
6765 | goto keylookup; | |
79072805 | 6766 | case 'x': |
3280af22 | 6767 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
6768 | s++; |
6769 | Mop(OP_REPEAT); | |
2f3197b3 | 6770 | } |
79072805 LW |
6771 | goto keylookup; |
6772 | ||
378cc40b | 6773 | case '_': |
79072805 LW |
6774 | case 'a': case 'A': |
6775 | case 'b': case 'B': | |
6776 | case 'c': case 'C': | |
6777 | case 'd': case 'D': | |
6778 | case 'e': case 'E': | |
6779 | case 'f': case 'F': | |
6780 | case 'g': case 'G': | |
6781 | case 'h': case 'H': | |
6782 | case 'i': case 'I': | |
6783 | case 'j': case 'J': | |
6784 | case 'k': case 'K': | |
6785 | case 'l': case 'L': | |
6786 | case 'm': case 'M': | |
6787 | case 'n': case 'N': | |
6788 | case 'o': case 'O': | |
6789 | case 'p': case 'P': | |
6790 | case 'q': case 'Q': | |
6791 | case 'r': case 'R': | |
6792 | case 's': case 'S': | |
6793 | case 't': case 'T': | |
6794 | case 'u': case 'U': | |
a7cb1f99 | 6795 | case 'V': |
79072805 LW |
6796 | case 'w': case 'W': |
6797 | case 'X': | |
6798 | case 'y': case 'Y': | |
6799 | case 'z': case 'Z': | |
6800 | ||
49dc05e3 | 6801 | keylookup: { |
88e1f1a2 | 6802 | bool anydelim; |
18f70389 | 6803 | bool lex; |
90771dc0 | 6804 | I32 tmp; |
18f70389 | 6805 | SV *sv; |
73f3e228 FC |
6806 | CV *cv; |
6807 | PADOFFSET off; | |
6808 | OP *rv2cv_op; | |
10edeb5d | 6809 | |
18f70389 | 6810 | lex = FALSE; |
10edeb5d | 6811 | orig_keyword = 0; |
73f3e228 | 6812 | off = 0; |
18f70389 | 6813 | sv = NULL; |
73f3e228 | 6814 | cv = NULL; |
10edeb5d JH |
6815 | gv = NULL; |
6816 | gvp = NULL; | |
73f3e228 | 6817 | rv2cv_op = NULL; |
49dc05e3 | 6818 | |
3280af22 NIS |
6819 | PL_bufptr = s; |
6820 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 6821 | |
6822 | /* Some keywords can be followed by any delimiter, including ':' */ | |
361d9b55 | 6823 | anydelim = word_takes_any_delimeter(PL_tokenbuf, len); |
8ebc5c01 | 6824 | |
6825 | /* x::* is just a word, unless x is "CORE" */ | |
88e1f1a2 | 6826 | if (!anydelim && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
6827 | goto just_a_word; |
6828 | ||
3643fb5f | 6829 | d = s; |
3280af22 | 6830 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
6831 | d++; /* no comments skipped here, or s### is misparsed */ |
6832 | ||
748a9306 | 6833 | /* Is this a word before a => operator? */ |
1c3923b3 | 6834 | if (*d == '=' && d[1] == '>') { |
748a9306 | 6835 | CLINE; |
6154021b | 6836 | pl_yylval.opval |
d0a148a6 NC |
6837 | = (OP*)newSVOP(OP_CONST, 0, |
6838 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
6154021b | 6839 | pl_yylval.opval->op_private = OPpCONST_BARE; |
748a9306 LW |
6840 | TERM(WORD); |
6841 | } | |
6842 | ||
88e1f1a2 JV |
6843 | /* Check for plugged-in keyword */ |
6844 | { | |
6845 | OP *o; | |
6846 | int result; | |
6847 | char *saved_bufptr = PL_bufptr; | |
6848 | PL_bufptr = s; | |
16c91539 | 6849 | result = PL_keyword_plugin(aTHX_ PL_tokenbuf, len, &o); |
88e1f1a2 JV |
6850 | s = PL_bufptr; |
6851 | if (result == KEYWORD_PLUGIN_DECLINE) { | |
6852 | /* not a plugged-in keyword */ | |
6853 | PL_bufptr = saved_bufptr; | |
6854 | } else if (result == KEYWORD_PLUGIN_STMT) { | |
6855 | pl_yylval.opval = o; | |
6856 | CLINE; | |
6857 | PL_expect = XSTATE; | |
6858 | return REPORT(PLUGSTMT); | |
6859 | } else if (result == KEYWORD_PLUGIN_EXPR) { | |
6860 | pl_yylval.opval = o; | |
6861 | CLINE; | |
6862 | PL_expect = XOPERATOR; | |
6863 | return REPORT(PLUGEXPR); | |
6864 | } else { | |
6865 | Perl_croak(aTHX_ "Bad plugin affecting keyword '%s'", | |
6866 | PL_tokenbuf); | |
6867 | } | |
6868 | } | |
6869 | ||
6870 | /* Check for built-in keyword */ | |
6871 | tmp = keyword(PL_tokenbuf, len, 0); | |
6872 | ||
6873 | /* Is this a label? */ | |
6874 | if (!anydelim && PL_expect == XSTATE | |
6875 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
88e1f1a2 | 6876 | s = d + 1; |
5504e6cf FC |
6877 | pl_yylval.pval = savepvn(PL_tokenbuf, len+1); |
6878 | pl_yylval.pval[len] = '\0'; | |
6879 | pl_yylval.pval[len+1] = UTF ? 1 : 0; | |
88e1f1a2 JV |
6880 | CLINE; |
6881 | TOKEN(LABEL); | |
6882 | } | |
6883 | ||
18f70389 FC |
6884 | /* Check for lexical sub */ |
6885 | if (PL_expect != XOPERATOR) { | |
6886 | char tmpbuf[sizeof PL_tokenbuf + 1]; | |
18f70389 FC |
6887 | *tmpbuf = '&'; |
6888 | Copy(PL_tokenbuf, tmpbuf+1, len, char); | |
6889 | off = pad_findmy_pvn(tmpbuf, len+1, UTF ? SVf_UTF8 : 0); | |
6890 | if (off != NOT_IN_PAD) { | |
73f3e228 | 6891 | assert(off); /* we assume this is boolean-true below */ |
18f70389 FC |
6892 | if (PAD_COMPNAME_FLAGS_isOUR(off)) { |
6893 | HV * const stash = PAD_COMPNAME_OURSTASH(off); | |
6894 | HEK * const stashname = HvNAME_HEK(stash); | |
6895 | sv = newSVhek(stashname); | |
6896 | sv_catpvs(sv, "::"); | |
6897 | sv_catpvn_flags(sv, PL_tokenbuf, len, | |
6898 | (UTF ? SV_CATUTF8 : SV_CATBYTES)); | |
6899 | gv = gv_fetchsv(sv, GV_NOADD_NOINIT | SvUTF8(sv), | |
6900 | SVt_PVCV); | |
73f3e228 | 6901 | off = 0; |
18f70389 | 6902 | } |
73f3e228 FC |
6903 | else { |
6904 | rv2cv_op = newOP(OP_PADANY, 0); | |
6905 | rv2cv_op->op_targ = off; | |
6906 | rv2cv_op = (OP*)newCVREF(0, rv2cv_op); | |
6907 | cv = (CV *)PAD_SV(off); | |
6908 | } | |
6909 | lex = TRUE; | |
6910 | goto just_a_word; | |
18f70389 | 6911 | } |
73f3e228 | 6912 | off = 0; |
18f70389 FC |
6913 | } |
6914 | ||
a0d0e21e | 6915 | if (tmp < 0) { /* second-class keyword? */ |
cbbf8932 AL |
6916 | GV *ogv = NULL; /* override (winner) */ |
6917 | GV *hgv = NULL; /* hidden (loser) */ | |
3280af22 | 6918 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 6919 | CV *cv; |
af9f5953 BF |
6920 | if ((gv = gv_fetchpvn_flags(PL_tokenbuf, len, |
6921 | UTF ? SVf_UTF8 : 0, SVt_PVCV)) && | |
56f7f34b CS |
6922 | (cv = GvCVu(gv))) |
6923 | { | |
6924 | if (GvIMPORTED_CV(gv)) | |
6925 | ogv = gv; | |
6926 | else if (! CvMETHOD(cv)) | |
6927 | hgv = gv; | |
6928 | } | |
6929 | if (!ogv && | |
af9f5953 | 6930 | (gvp = (GV**)hv_fetch(PL_globalstash, PL_tokenbuf, |
c60dbbc3 | 6931 | UTF ? -(I32)len : (I32)len, FALSE)) && |
9e0d86f8 | 6932 | (gv = *gvp) && isGV_with_GP(gv) && |
56f7f34b CS |
6933 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
6934 | { | |
6935 | ogv = gv; | |
6936 | } | |
6937 | } | |
6938 | if (ogv) { | |
30fe34ed | 6939 | orig_keyword = tmp; |
56f7f34b | 6940 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
6941 | } |
6942 | else if (gv && !gvp | |
6943 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
47f9f84c | 6944 | && GvCVu(gv)) |
6e7b2336 GS |
6945 | { |
6946 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 6947 | } |
56f7f34b CS |
6948 | else { /* no override */ |
6949 | tmp = -tmp; | |
a2a5de95 NC |
6950 | if (tmp == KEY_dump) { |
6951 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
6952 | "dump() better written as CORE::dump()"); | |
ac206dc8 | 6953 | } |
a0714e2c | 6954 | gv = NULL; |
56f7f34b | 6955 | gvp = 0; |
a2a5de95 NC |
6956 | if (hgv && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ |
6957 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
de2b151d JM |
6958 | "Ambiguous call resolved as CORE::%s(), " |
6959 | "qualify as such or use &", | |
6960 | GvENAME(hgv)); | |
49dc05e3 | 6961 | } |
a0d0e21e LW |
6962 | } |
6963 | ||
6964 | reserved_word: | |
6965 | switch (tmp) { | |
79072805 LW |
6966 | |
6967 | default: /* not a keyword */ | |
0bfa2a8a NC |
6968 | /* Trade off - by using this evil construction we can pull the |
6969 | variable gv into the block labelled keylookup. If not, then | |
6970 | we have to give it function scope so that the goto from the | |
6971 | earlier ':' case doesn't bypass the initialisation. */ | |
6972 | if (0) { | |
6973 | just_a_word_zero_gv: | |
73f3e228 FC |
6974 | sv = NULL; |
6975 | cv = NULL; | |
0bfa2a8a NC |
6976 | gv = NULL; |
6977 | gvp = NULL; | |
73f3e228 | 6978 | rv2cv_op = NULL; |
8bee0991 | 6979 | orig_keyword = 0; |
18f70389 FC |
6980 | lex = 0; |
6981 | off = 0; | |
0bfa2a8a | 6982 | } |
93a17b20 | 6983 | just_a_word: { |
ce29ac45 | 6984 | int pkgname = 0; |
f54cb97a | 6985 | const char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
898c3bca FC |
6986 | const char penultchar = |
6987 | lastchar && PL_bufptr - 2 >= PL_linestart | |
6988 | ? PL_bufptr[-2] | |
6989 | : 0; | |
5db06880 | 6990 | #ifdef PERL_MAD |
cd81e915 | 6991 | SV *nextPL_nextwhite = 0; |
5db06880 NC |
6992 | #endif |
6993 | ||
8990e307 LW |
6994 | |
6995 | /* Get the rest if it looks like a package qualifier */ | |
6996 | ||
155aba94 | 6997 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 6998 | STRLEN morelen; |
3280af22 | 6999 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
7000 | TRUE, &morelen); |
7001 | if (!morelen) | |
86fe3f36 BF |
7002 | Perl_croak(aTHX_ "Bad name after %"SVf"%s", |
7003 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
7004 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP )), | |
ec2ab091 | 7005 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 7006 | len += morelen; |
ce29ac45 | 7007 | pkgname = 1; |
a0d0e21e | 7008 | } |
8990e307 | 7009 | |
3280af22 NIS |
7010 | if (PL_expect == XOPERATOR) { |
7011 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 7012 | CopLINE_dec(PL_curcop); |
f1f66076 | 7013 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 7014 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
7015 | } |
7016 | else | |
54310121 | 7017 | no_op("Bareword",s); |
463ee0b2 | 7018 | } |
8990e307 | 7019 | |
c3e0f903 | 7020 | /* Look for a subroutine with this name in current package, |
73f3e228 FC |
7021 | unless this is a lexical sub, or name is "Foo::", |
7022 | in which case Foo is a bareword | |
c3e0f903 GS |
7023 | (and a package name). */ |
7024 | ||
5db06880 | 7025 | if (len > 2 && !PL_madskills && |
3280af22 | 7026 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 7027 | { |
f776e3cd | 7028 | if (ckWARN(WARN_BAREWORD) |
af9f5953 | 7029 | && ! gv_fetchpvn_flags(PL_tokenbuf, len, UTF ? SVf_UTF8 : 0, SVt_PVHV)) |
9014280d | 7030 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
979a1401 BF |
7031 | "Bareword \"%"SVf"\" refers to nonexistent package", |
7032 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
7033 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP))); | |
c3e0f903 | 7034 | len -= 2; |
3280af22 | 7035 | PL_tokenbuf[len] = '\0'; |
a0714e2c | 7036 | gv = NULL; |
c3e0f903 GS |
7037 | gvp = 0; |
7038 | } | |
7039 | else { | |
73f3e228 | 7040 | if (!lex && !gv) { |
62d55b22 NC |
7041 | /* Mustn't actually add anything to a symbol table. |
7042 | But also don't want to "initialise" any placeholder | |
7043 | constants that might already be there into full | |
7044 | blown PVGVs with attached PVCV. */ | |
90e5519e | 7045 | gv = gv_fetchpvn_flags(PL_tokenbuf, len, |
af9f5953 BF |
7046 | GV_NOADD_NOINIT | ( UTF ? SVf_UTF8 : 0 ), |
7047 | SVt_PVCV); | |
62d55b22 | 7048 | } |
b3d904f3 | 7049 | len = 0; |
c3e0f903 GS |
7050 | } |
7051 | ||
7052 | /* if we saw a global override before, get the right name */ | |
8990e307 | 7053 | |
73f3e228 | 7054 | if (!sv) |
18f70389 | 7055 | sv = S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, |
37bb7629 | 7056 | len ? len : strlen(PL_tokenbuf)); |
49dc05e3 | 7057 | if (gvp) { |
37bb7629 | 7058 | SV * const tmp_sv = sv; |
396482e1 | 7059 | sv = newSVpvs("CORE::GLOBAL::"); |
37bb7629 EB |
7060 | sv_catsv(sv, tmp_sv); |
7061 | SvREFCNT_dec(tmp_sv); | |
8a7a129d | 7062 | } |
37bb7629 | 7063 | |
5db06880 | 7064 | #ifdef PERL_MAD |
cd81e915 NC |
7065 | if (PL_madskills && !PL_thistoken) { |
7066 | char *start = SvPVX(PL_linestr) + PL_realtokenstart; | |
9ff8e806 | 7067 | PL_thistoken = newSVpvn(start,s - start); |
cd81e915 | 7068 | PL_realtokenstart = s - SvPVX(PL_linestr); |
5db06880 NC |
7069 | } |
7070 | #endif | |
8990e307 | 7071 | |
a0d0e21e | 7072 | /* Presume this is going to be a bareword of some sort. */ |
a0d0e21e | 7073 | CLINE; |
6154021b RGS |
7074 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
7075 | pl_yylval.opval->op_private = OPpCONST_BARE; | |
a0d0e21e | 7076 | |
c3e0f903 | 7077 | /* And if "Foo::", then that's what it certainly is. */ |
c3e0f903 GS |
7078 | if (len) |
7079 | goto safe_bareword; | |
7080 | ||
73f3e228 | 7081 | if (!off) |
f7461760 | 7082 | { |
d8ebba9f | 7083 | OP *const_op = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(sv)); |
f7461760 Z |
7084 | const_op->op_private = OPpCONST_BARE; |
7085 | rv2cv_op = newCVREF(0, const_op); | |
73f3e228 | 7086 | cv = lex ? GvCV(gv) : rv2cv_op_cv(rv2cv_op, 0); |
f7461760 | 7087 | } |
5069cc75 | 7088 | |
8990e307 LW |
7089 | /* See if it's the indirect object for a list operator. */ |
7090 | ||
3280af22 NIS |
7091 | if (PL_oldoldbufptr && |
7092 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
7093 | (PL_oldoldbufptr == PL_last_lop |
7094 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 7095 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
7096 | (PL_expect == XREF || |
7097 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 7098 | { |
748a9306 LW |
7099 | bool immediate_paren = *s == '('; |
7100 | ||
a0d0e21e | 7101 | /* (Now we can afford to cross potential line boundary.) */ |
cd81e915 | 7102 | s = SKIPSPACE2(s,nextPL_nextwhite); |
5db06880 | 7103 | #ifdef PERL_MAD |
cd81e915 | 7104 | PL_nextwhite = nextPL_nextwhite; /* assume no & deception */ |
5db06880 | 7105 | #endif |
a0d0e21e LW |
7106 | |
7107 | /* Two barewords in a row may indicate method call. */ | |
7108 | ||
62d55b22 | 7109 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && |
f7461760 Z |
7110 | (tmp = intuit_method(s, gv, cv))) { |
7111 | op_free(rv2cv_op); | |
78cdf107 Z |
7112 | if (tmp == METHOD && !PL_lex_allbrackets && |
7113 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7114 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 7115 | return REPORT(tmp); |
f7461760 | 7116 | } |
a0d0e21e LW |
7117 | |
7118 | /* If not a declared subroutine, it's an indirect object. */ | |
7119 | /* (But it's an indir obj regardless for sort.) */ | |
7294df96 | 7120 | /* Also, if "_" follows a filetest operator, it's a bareword */ |
a0d0e21e | 7121 | |
7294df96 RGS |
7122 | if ( |
7123 | ( !immediate_paren && (PL_last_lop_op == OP_SORT || | |
f7461760 | 7124 | (!cv && |
a9ef352a | 7125 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 7126 | PL_last_lop_op != OP_GREPSTART)))) |
7294df96 RGS |
7127 | || (PL_tokenbuf[0] == '_' && PL_tokenbuf[1] == '\0' |
7128 | && ((PL_opargs[PL_last_lop_op] & OA_CLASS_MASK) == OA_FILESTATOP)) | |
7129 | ) | |
a9ef352a | 7130 | { |
3280af22 | 7131 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 7132 | goto bareword; |
93a17b20 LW |
7133 | } |
7134 | } | |
8990e307 | 7135 | |
3280af22 | 7136 | PL_expect = XOPERATOR; |
5db06880 NC |
7137 | #ifdef PERL_MAD |
7138 | if (isSPACE(*s)) | |
cd81e915 NC |
7139 | s = SKIPSPACE2(s,nextPL_nextwhite); |
7140 | PL_nextwhite = nextPL_nextwhite; | |
5db06880 | 7141 | #else |
8990e307 | 7142 | s = skipspace(s); |
5db06880 | 7143 | #endif |
1c3923b3 GS |
7144 | |
7145 | /* Is this a word before a => operator? */ | |
ce29ac45 | 7146 | if (*s == '=' && s[1] == '>' && !pkgname) { |
f7461760 | 7147 | op_free(rv2cv_op); |
1c3923b3 | 7148 | CLINE; |
6154021b | 7149 | sv_setpv(((SVOP*)pl_yylval.opval)->op_sv, PL_tokenbuf); |
0064a8a9 | 7150 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
6154021b | 7151 | SvUTF8_on(((SVOP*)pl_yylval.opval)->op_sv); |
1c3923b3 GS |
7152 | TERM(WORD); |
7153 | } | |
7154 | ||
7155 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 7156 | if (*s == '(') { |
79072805 | 7157 | CLINE; |
5069cc75 | 7158 | if (cv) { |
c35e046a AL |
7159 | d = s + 1; |
7160 | while (SPACE_OR_TAB(*d)) | |
7161 | d++; | |
f7461760 | 7162 | if (*d == ')' && (sv = cv_const_sv(cv))) { |
96e4d5b1 | 7163 | s = d + 1; |
c631f32b | 7164 | goto its_constant; |
96e4d5b1 | 7165 | } |
7166 | } | |
5db06880 NC |
7167 | #ifdef PERL_MAD |
7168 | if (PL_madskills) { | |
cd81e915 NC |
7169 | PL_nextwhite = PL_thiswhite; |
7170 | PL_thiswhite = 0; | |
5db06880 | 7171 | } |
cd81e915 | 7172 | start_force(PL_curforce); |
5db06880 | 7173 | #endif |
73f3e228 FC |
7174 | NEXTVAL_NEXTTOKE.opval = |
7175 | off ? rv2cv_op : pl_yylval.opval; | |
3280af22 | 7176 | PL_expect = XOPERATOR; |
5db06880 NC |
7177 | #ifdef PERL_MAD |
7178 | if (PL_madskills) { | |
cd81e915 NC |
7179 | PL_nextwhite = nextPL_nextwhite; |
7180 | curmad('X', PL_thistoken); | |
6b29d1f5 | 7181 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
7182 | } |
7183 | #endif | |
73f3e228 FC |
7184 | if (off) |
7185 | op_free(pl_yylval.opval), force_next(PRIVATEREF); | |
7186 | else op_free(rv2cv_op), force_next(WORD); | |
6154021b | 7187 | pl_yylval.ival = 0; |
463ee0b2 | 7188 | TOKEN('&'); |
79072805 | 7189 | } |
93a17b20 | 7190 | |
a0d0e21e | 7191 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 7192 | |
f7461760 Z |
7193 | if ((*s == '$' || *s == '{') && !cv) { |
7194 | op_free(rv2cv_op); | |
3280af22 NIS |
7195 | PL_last_lop = PL_oldbufptr; |
7196 | PL_last_lop_op = OP_METHOD; | |
78cdf107 Z |
7197 | if (!PL_lex_allbrackets && |
7198 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7199 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
93a17b20 | 7200 | PREBLOCK(METHOD); |
463ee0b2 LW |
7201 | } |
7202 | ||
8990e307 LW |
7203 | /* If followed by a bareword, see if it looks like indir obj. */ |
7204 | ||
30fe34ed RGS |
7205 | if (!orig_keyword |
7206 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
f7461760 Z |
7207 | && (tmp = intuit_method(s, gv, cv))) { |
7208 | op_free(rv2cv_op); | |
78cdf107 Z |
7209 | if (tmp == METHOD && !PL_lex_allbrackets && |
7210 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7211 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 7212 | return REPORT(tmp); |
f7461760 | 7213 | } |
93a17b20 | 7214 | |
8990e307 LW |
7215 | /* Not a method, so call it a subroutine (if defined) */ |
7216 | ||
5069cc75 | 7217 | if (cv) { |
898c3bca | 7218 | if (lastchar == '-' && penultchar != '-') { |
43b5ab4c BF |
7219 | const SV *tmpsv = newSVpvn_flags( PL_tokenbuf, len ? len : strlen(PL_tokenbuf), (UTF ? SVf_UTF8 : 0) | SVs_TEMP ); |
7220 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
7221 | "Ambiguous use of -%"SVf" resolved as -&%"SVf"()", | |
7222 | SVfARG(tmpsv), SVfARG(tmpsv)); | |
7223 | } | |
89bfa8cd | 7224 | /* Check for a constant sub */ |
f7461760 | 7225 | if ((sv = cv_const_sv(cv))) { |
96e4d5b1 | 7226 | its_constant: |
f7461760 | 7227 | op_free(rv2cv_op); |
6154021b RGS |
7228 | SvREFCNT_dec(((SVOP*)pl_yylval.opval)->op_sv); |
7229 | ((SVOP*)pl_yylval.opval)->op_sv = SvREFCNT_inc_simple(sv); | |
cc2ebcd7 | 7230 | pl_yylval.opval->op_private = OPpCONST_FOLDED; |
6b7c6d95 | 7231 | pl_yylval.opval->op_flags |= OPf_SPECIAL; |
96e4d5b1 | 7232 | TOKEN(WORD); |
89bfa8cd | 7233 | } |
7234 | ||
6154021b | 7235 | op_free(pl_yylval.opval); |
f7461760 | 7236 | pl_yylval.opval = rv2cv_op; |
6154021b | 7237 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 7238 | PL_last_lop = PL_oldbufptr; |
bf848113 | 7239 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 | 7240 | /* Is there a prototype? */ |
5db06880 NC |
7241 | if ( |
7242 | #ifdef PERL_MAD | |
7243 | cv && | |
7244 | #endif | |
d9f2850e RGS |
7245 | SvPOK(cv)) |
7246 | { | |
8fa6a409 FC |
7247 | STRLEN protolen = CvPROTOLEN(cv); |
7248 | const char *proto = CvPROTO(cv); | |
b5fb7ce3 | 7249 | bool optional; |
5f66b61c | 7250 | if (!protolen) |
4633a7c4 | 7251 | TERM(FUNC0SUB); |
b5fb7ce3 FC |
7252 | if ((optional = *proto == ';')) |
7253 | do | |
0f5d0394 | 7254 | proto++; |
b5fb7ce3 | 7255 | while (*proto == ';'); |
649d02de FC |
7256 | if ( |
7257 | ( | |
7258 | ( | |
7259 | *proto == '$' || *proto == '_' | |
c035a075 | 7260 | || *proto == '*' || *proto == '+' |
649d02de FC |
7261 | ) |
7262 | && proto[1] == '\0' | |
7263 | ) | |
7264 | || ( | |
7265 | *proto == '\\' && proto[1] && proto[2] == '\0' | |
7266 | ) | |
7267 | ) | |
b5fb7ce3 | 7268 | UNIPROTO(UNIOPSUB,optional); |
649d02de FC |
7269 | if (*proto == '\\' && proto[1] == '[') { |
7270 | const char *p = proto + 2; | |
7271 | while(*p && *p != ']') | |
7272 | ++p; | |
b5fb7ce3 FC |
7273 | if(*p == ']' && !p[1]) |
7274 | UNIPROTO(UNIOPSUB,optional); | |
649d02de | 7275 | } |
7a52d87a | 7276 | if (*proto == '&' && *s == '{') { |
49a54bbe NC |
7277 | if (PL_curstash) |
7278 | sv_setpvs(PL_subname, "__ANON__"); | |
7279 | else | |
7280 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
78cdf107 Z |
7281 | if (!PL_lex_allbrackets && |
7282 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7283 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
4633a7c4 LW |
7284 | PREBLOCK(LSTOPSUB); |
7285 | } | |
a9ef352a | 7286 | } |
5db06880 NC |
7287 | #ifdef PERL_MAD |
7288 | { | |
7289 | if (PL_madskills) { | |
cd81e915 NC |
7290 | PL_nextwhite = PL_thiswhite; |
7291 | PL_thiswhite = 0; | |
5db06880 | 7292 | } |
cd81e915 | 7293 | start_force(PL_curforce); |
6154021b | 7294 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 NC |
7295 | PL_expect = XTERM; |
7296 | if (PL_madskills) { | |
cd81e915 NC |
7297 | PL_nextwhite = nextPL_nextwhite; |
7298 | curmad('X', PL_thistoken); | |
6b29d1f5 | 7299 | PL_thistoken = newSVpvs(""); |
5db06880 | 7300 | } |
73f3e228 | 7301 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7302 | if (!PL_lex_allbrackets && |
7303 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7304 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
7305 | TOKEN(NOAMP); |
7306 | } | |
7307 | } | |
7308 | ||
7309 | /* Guess harder when madskills require "best effort". */ | |
7310 | if (PL_madskills && (!gv || !GvCVu(gv))) { | |
7311 | int probable_sub = 0; | |
7312 | if (strchr("\"'`$@%0123456789!*+{[<", *s)) | |
7313 | probable_sub = 1; | |
7314 | else if (isALPHA(*s)) { | |
7315 | char tmpbuf[1024]; | |
7316 | STRLEN tmplen; | |
7317 | d = s; | |
7318 | d = scan_word(d, tmpbuf, sizeof tmpbuf, TRUE, &tmplen); | |
5458a98a | 7319 | if (!keyword(tmpbuf, tmplen, 0)) |
5db06880 NC |
7320 | probable_sub = 1; |
7321 | else { | |
7322 | while (d < PL_bufend && isSPACE(*d)) | |
7323 | d++; | |
7324 | if (*d == '=' && d[1] == '>') | |
7325 | probable_sub = 1; | |
7326 | } | |
7327 | } | |
7328 | if (probable_sub) { | |
af9f5953 BF |
7329 | gv = gv_fetchpv(PL_tokenbuf, GV_ADD | ( UTF ? SVf_UTF8 : 0 ), |
7330 | SVt_PVCV); | |
6154021b | 7331 | op_free(pl_yylval.opval); |
f7461760 | 7332 | pl_yylval.opval = rv2cv_op; |
6154021b | 7333 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
5db06880 NC |
7334 | PL_last_lop = PL_oldbufptr; |
7335 | PL_last_lop_op = OP_ENTERSUB; | |
cd81e915 NC |
7336 | PL_nextwhite = PL_thiswhite; |
7337 | PL_thiswhite = 0; | |
7338 | start_force(PL_curforce); | |
6154021b | 7339 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 | 7340 | PL_expect = XTERM; |
cd81e915 NC |
7341 | PL_nextwhite = nextPL_nextwhite; |
7342 | curmad('X', PL_thistoken); | |
6b29d1f5 | 7343 | PL_thistoken = newSVpvs(""); |
73f3e228 | 7344 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7345 | if (!PL_lex_allbrackets && |
7346 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7347 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
7348 | TOKEN(NOAMP); |
7349 | } | |
7350 | #else | |
6154021b | 7351 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
3280af22 | 7352 | PL_expect = XTERM; |
73f3e228 | 7353 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7354 | if (!PL_lex_allbrackets && |
7355 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7356 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
8990e307 | 7357 | TOKEN(NOAMP); |
5db06880 | 7358 | #endif |
8990e307 | 7359 | } |
748a9306 | 7360 | |
8990e307 LW |
7361 | /* Call it a bare word */ |
7362 | ||
5603f27d | 7363 | if (PL_hints & HINT_STRICT_SUBS) |
6154021b | 7364 | pl_yylval.opval->op_private |= OPpCONST_STRICT; |
5603f27d | 7365 | else { |
9a073a1d RGS |
7366 | bareword: |
7367 | /* after "print" and similar functions (corresponding to | |
7368 | * "F? L" in opcode.pl), whatever wasn't already parsed as | |
7369 | * a filehandle should be subject to "strict subs". | |
7370 | * Likewise for the optional indirect-object argument to system | |
7371 | * or exec, which can't be a bareword */ | |
7372 | if ((PL_last_lop_op == OP_PRINT | |
7373 | || PL_last_lop_op == OP_PRTF | |
7374 | || PL_last_lop_op == OP_SAY | |
7375 | || PL_last_lop_op == OP_SYSTEM | |
7376 | || PL_last_lop_op == OP_EXEC) | |
7377 | && (PL_hints & HINT_STRICT_SUBS)) | |
7378 | pl_yylval.opval->op_private |= OPpCONST_STRICT; | |
041457d9 DM |
7379 | if (lastchar != '-') { |
7380 | if (ckWARN(WARN_RESERVED)) { | |
c35e046a AL |
7381 | d = PL_tokenbuf; |
7382 | while (isLOWER(*d)) | |
7383 | d++; | |
af9f5953 | 7384 | if (!*d && !gv_stashpv(PL_tokenbuf, UTF ? SVf_UTF8 : 0)) |
9014280d | 7385 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
7386 | PL_tokenbuf); |
7387 | } | |
748a9306 LW |
7388 | } |
7389 | } | |
f7461760 | 7390 | op_free(rv2cv_op); |
c3e0f903 GS |
7391 | |
7392 | safe_bareword: | |
9b387841 NC |
7393 | if ((lastchar == '*' || lastchar == '%' || lastchar == '&')) { |
7394 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
02571fe8 BF |
7395 | "Operator or semicolon missing before %c%"SVf, |
7396 | lastchar, SVfARG(newSVpvn_flags(PL_tokenbuf, | |
7397 | strlen(PL_tokenbuf), | |
7398 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
9b387841 NC |
7399 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
7400 | "Ambiguous use of %c resolved as operator %c", | |
7401 | lastchar, lastchar); | |
748a9306 | 7402 | } |
93a17b20 | 7403 | TOKEN(WORD); |
79072805 | 7404 | } |
79072805 | 7405 | |
68dc0745 | 7406 | case KEY___FILE__: |
7eb971ee | 7407 | FUN0OP( |
14f0f125 | 7408 | (OP*)newSVOP(OP_CONST, 0, newSVpv(CopFILE(PL_curcop),0)) |
7eb971ee | 7409 | ); |
46fc3d4c | 7410 | |
79072805 | 7411 | case KEY___LINE__: |
7eb971ee FC |
7412 | FUN0OP( |
7413 | (OP*)newSVOP(OP_CONST, 0, | |
7414 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))) | |
7415 | ); | |
68dc0745 | 7416 | |
7417 | case KEY___PACKAGE__: | |
7eb971ee FC |
7418 | FUN0OP( |
7419 | (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 7420 | (PL_curstash |
5aaec2b4 | 7421 | ? newSVhek(HvNAME_HEK(PL_curstash)) |
7eb971ee FC |
7422 | : &PL_sv_undef)) |
7423 | ); | |
79072805 | 7424 | |
e50aee73 | 7425 | case KEY___DATA__: |
79072805 LW |
7426 | case KEY___END__: { |
7427 | GV *gv; | |
3280af22 | 7428 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
bfed75c6 | 7429 | const char *pname = "main"; |
affc13fc FC |
7430 | STRLEN plen = 4; |
7431 | U32 putf8 = 0; | |
3280af22 | 7432 | if (PL_tokenbuf[2] == 'D') |
affc13fc FC |
7433 | { |
7434 | HV * const stash = | |
7435 | PL_curstash ? PL_curstash : PL_defstash; | |
7436 | pname = HvNAME_get(stash); | |
7437 | plen = HvNAMELEN (stash); | |
7438 | if(HvNAMEUTF8(stash)) putf8 = SVf_UTF8; | |
7439 | } | |
7440 | gv = gv_fetchpvn_flags( | |
7441 | Perl_form(aTHX_ "%*s::DATA", (int)plen, pname), | |
7442 | plen+6, GV_ADD|putf8, SVt_PVIO | |
7443 | ); | |
a5f75d66 | 7444 | GvMULTI_on(gv); |
79072805 | 7445 | if (!GvIO(gv)) |
a0d0e21e | 7446 | GvIOp(gv) = newIO(); |
3280af22 | 7447 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
7448 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
7449 | { | |
f54cb97a | 7450 | const int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
7451 | fcntl(fd,F_SETFD,fd >= 3); |
7452 | } | |
79072805 | 7453 | #endif |
fd049845 | 7454 | /* Mark this internal pseudo-handle as clean */ |
7455 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
4c84d7f2 | 7456 | if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 7457 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 7458 | else |
50952442 | 7459 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
7460 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
7461 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 7462 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 7463 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
7464 | if (PL_bufend-PL_bufptr > 2 |
7465 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
7466 | { |
7467 | Off_t loc = 0; | |
50952442 | 7468 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
7469 | loc = PerlIO_tell(PL_rsfp); |
7470 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
7471 | } | |
2986a63f JH |
7472 | #ifdef NETWARE |
7473 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
7474 | #else | |
c39cd008 | 7475 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 7476 | #endif /* NETWARE */ |
c39cd008 GS |
7477 | if (loc > 0) |
7478 | PerlIO_seek(PL_rsfp, loc, 0); | |
7479 | } | |
7480 | } | |
7481 | #endif | |
7948272d | 7482 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
7483 | if (!IN_BYTES) { |
7484 | if (UTF) | |
7485 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
7486 | else if (PL_encoding) { | |
7487 | SV *name; | |
7488 | dSP; | |
7489 | ENTER; | |
7490 | SAVETMPS; | |
7491 | PUSHMARK(sp); | |
7492 | EXTEND(SP, 1); | |
7493 | XPUSHs(PL_encoding); | |
7494 | PUTBACK; | |
7495 | call_method("name", G_SCALAR); | |
7496 | SPAGAIN; | |
7497 | name = POPs; | |
7498 | PUTBACK; | |
bfed75c6 | 7499 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, |
52d2e0f4 | 7500 | Perl_form(aTHX_ ":encoding(%"SVf")", |
be2597df | 7501 | SVfARG(name))); |
52d2e0f4 JH |
7502 | FREETMPS; |
7503 | LEAVE; | |
7504 | } | |
7505 | } | |
7948272d | 7506 | #endif |
5db06880 NC |
7507 | #ifdef PERL_MAD |
7508 | if (PL_madskills) { | |
cd81e915 NC |
7509 | if (PL_realtokenstart >= 0) { |
7510 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; | |
7511 | if (!PL_endwhite) | |
6b29d1f5 | 7512 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
7513 | sv_catsv(PL_endwhite, PL_thiswhite); |
7514 | PL_thiswhite = 0; | |
7515 | sv_catpvn(PL_endwhite, tstart, PL_bufend - tstart); | |
7516 | PL_realtokenstart = -1; | |
5db06880 | 7517 | } |
5cc814fd NC |
7518 | while ((s = filter_gets(PL_endwhite, SvCUR(PL_endwhite))) |
7519 | != NULL) ; | |
5db06880 NC |
7520 | } |
7521 | #endif | |
4608196e | 7522 | PL_rsfp = NULL; |
79072805 LW |
7523 | } |
7524 | goto fake_eof; | |
e929a76b | 7525 | } |
de3bb511 | 7526 | |
84ed0108 | 7527 | case KEY___SUB__: |
1a35f9ff | 7528 | FUN0OP(newPVOP(OP_RUNCV,0,NULL)); |
84ed0108 | 7529 | |
8990e307 | 7530 | case KEY_AUTOLOAD: |
ed6116ce | 7531 | case KEY_DESTROY: |
79072805 | 7532 | case KEY_BEGIN: |
3c10abe3 | 7533 | case KEY_UNITCHECK: |
7d30b5c4 | 7534 | case KEY_CHECK: |
7d07dbc2 | 7535 | case KEY_INIT: |
7d30b5c4 | 7536 | case KEY_END: |
3280af22 NIS |
7537 | if (PL_expect == XSTATE) { |
7538 | s = PL_bufptr; | |
93a17b20 | 7539 | goto really_sub; |
79072805 LW |
7540 | } |
7541 | goto just_a_word; | |
7542 | ||
a0d0e21e LW |
7543 | case KEY_CORE: |
7544 | if (*s == ':' && s[1] == ':') { | |
ee36fb64 | 7545 | STRLEN olen = len; |
748a9306 | 7546 | d = s; |
ee36fb64 | 7547 | s += 2; |
3280af22 | 7548 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
ee36fb64 FC |
7549 | if ((*s == ':' && s[1] == ':') |
7550 | || (!(tmp = keyword(PL_tokenbuf, len, 1)) && *s == '\'')) | |
7551 | { | |
7552 | s = d; | |
7553 | len = olen; | |
7554 | Copy(PL_bufptr, PL_tokenbuf, olen, char); | |
7555 | goto just_a_word; | |
7556 | } | |
7557 | if (!tmp) | |
3773592b BF |
7558 | Perl_croak(aTHX_ "CORE::%"SVf" is not a keyword", |
7559 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
7560 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP))); | |
a0d0e21e LW |
7561 | if (tmp < 0) |
7562 | tmp = -tmp; | |
d67594ff FC |
7563 | else if (tmp == KEY_require || tmp == KEY_do |
7564 | || tmp == KEY_glob) | |
a72a1c8b | 7565 | /* that's a way to remember we saw "CORE::" */ |
850e8516 | 7566 | orig_keyword = tmp; |
a0d0e21e LW |
7567 | goto reserved_word; |
7568 | } | |
7569 | goto just_a_word; | |
7570 | ||
463ee0b2 LW |
7571 | case KEY_abs: |
7572 | UNI(OP_ABS); | |
7573 | ||
79072805 LW |
7574 | case KEY_alarm: |
7575 | UNI(OP_ALARM); | |
7576 | ||
7577 | case KEY_accept: | |
a0d0e21e | 7578 | LOP(OP_ACCEPT,XTERM); |
79072805 | 7579 | |
463ee0b2 | 7580 | case KEY_and: |
78cdf107 Z |
7581 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
7582 | return REPORT(0); | |
463ee0b2 LW |
7583 | OPERATOR(ANDOP); |
7584 | ||
79072805 | 7585 | case KEY_atan2: |
a0d0e21e | 7586 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 7587 | |
79072805 | 7588 | case KEY_bind: |
a0d0e21e | 7589 | LOP(OP_BIND,XTERM); |
79072805 LW |
7590 | |
7591 | case KEY_binmode: | |
1c1fc3ea | 7592 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
7593 | |
7594 | case KEY_bless: | |
a0d0e21e | 7595 | LOP(OP_BLESS,XTERM); |
79072805 | 7596 | |
0d863452 RH |
7597 | case KEY_break: |
7598 | FUN0(OP_BREAK); | |
7599 | ||
79072805 LW |
7600 | case KEY_chop: |
7601 | UNI(OP_CHOP); | |
7602 | ||
7603 | case KEY_continue: | |
0d863452 RH |
7604 | /* We have to disambiguate the two senses of |
7605 | "continue". If the next token is a '{' then | |
7606 | treat it as the start of a continue block; | |
7607 | otherwise treat it as a control operator. | |
7608 | */ | |
7609 | s = skipspace(s); | |
7610 | if (*s == '{') | |
79072805 | 7611 | PREBLOCK(CONTINUE); |
0d863452 RH |
7612 | else |
7613 | FUN0(OP_CONTINUE); | |
79072805 LW |
7614 | |
7615 | case KEY_chdir: | |
fafc274c NC |
7616 | /* may use HOME */ |
7617 | (void)gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV); | |
79072805 LW |
7618 | UNI(OP_CHDIR); |
7619 | ||
7620 | case KEY_close: | |
7621 | UNI(OP_CLOSE); | |
7622 | ||
7623 | case KEY_closedir: | |
7624 | UNI(OP_CLOSEDIR); | |
7625 | ||
7626 | case KEY_cmp: | |
78cdf107 Z |
7627 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7628 | return REPORT(0); | |
79072805 LW |
7629 | Eop(OP_SCMP); |
7630 | ||
7631 | case KEY_caller: | |
7632 | UNI(OP_CALLER); | |
7633 | ||
7634 | case KEY_crypt: | |
7635 | #ifdef FCRYPT | |
f4c556ac GS |
7636 | if (!PL_cryptseen) { |
7637 | PL_cryptseen = TRUE; | |
de3bb511 | 7638 | init_des(); |
f4c556ac | 7639 | } |
a687059c | 7640 | #endif |
a0d0e21e | 7641 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
7642 | |
7643 | case KEY_chmod: | |
a0d0e21e | 7644 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
7645 | |
7646 | case KEY_chown: | |
a0d0e21e | 7647 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
7648 | |
7649 | case KEY_connect: | |
a0d0e21e | 7650 | LOP(OP_CONNECT,XTERM); |
79072805 | 7651 | |
463ee0b2 LW |
7652 | case KEY_chr: |
7653 | UNI(OP_CHR); | |
7654 | ||
79072805 LW |
7655 | case KEY_cos: |
7656 | UNI(OP_COS); | |
7657 | ||
7658 | case KEY_chroot: | |
7659 | UNI(OP_CHROOT); | |
7660 | ||
0d863452 RH |
7661 | case KEY_default: |
7662 | PREBLOCK(DEFAULT); | |
7663 | ||
79072805 | 7664 | case KEY_do: |
29595ff2 | 7665 | s = SKIPSPACE1(s); |
79072805 | 7666 | if (*s == '{') |
a0d0e21e | 7667 | PRETERMBLOCK(DO); |
c2900bb8 | 7668 | if (*s != '\'') { |
4b473a5a FC |
7669 | *PL_tokenbuf = '&'; |
7670 | d = scan_word(s, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
7671 | 1, &len); | |
7672 | if (len && !keyword(PL_tokenbuf + 1, len, 0)) { | |
c2900bb8 | 7673 | d = SKIPSPACE1(d); |
4b473a5a | 7674 | if (*d == '(') { |
60ac52eb | 7675 | force_ident_maybe_lex('&'); |
4b473a5a FC |
7676 | s = d; |
7677 | } | |
c2900bb8 FC |
7678 | } |
7679 | } | |
850e8516 RGS |
7680 | if (orig_keyword == KEY_do) { |
7681 | orig_keyword = 0; | |
6154021b | 7682 | pl_yylval.ival = 1; |
850e8516 RGS |
7683 | } |
7684 | else | |
6154021b | 7685 | pl_yylval.ival = 0; |
378cc40b | 7686 | OPERATOR(DO); |
79072805 LW |
7687 | |
7688 | case KEY_die: | |
3280af22 | 7689 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 7690 | LOP(OP_DIE,XTERM); |
79072805 LW |
7691 | |
7692 | case KEY_defined: | |
7693 | UNI(OP_DEFINED); | |
7694 | ||
7695 | case KEY_delete: | |
a0d0e21e | 7696 | UNI(OP_DELETE); |
79072805 LW |
7697 | |
7698 | case KEY_dbmopen: | |
74e8ce34 NC |
7699 | Perl_populate_isa(aTHX_ STR_WITH_LEN("AnyDBM_File::ISA"), |
7700 | STR_WITH_LEN("NDBM_File::"), | |
7701 | STR_WITH_LEN("DB_File::"), | |
7702 | STR_WITH_LEN("GDBM_File::"), | |
7703 | STR_WITH_LEN("SDBM_File::"), | |
7704 | STR_WITH_LEN("ODBM_File::"), | |
7705 | NULL); | |
a0d0e21e | 7706 | LOP(OP_DBMOPEN,XTERM); |
79072805 LW |
7707 | |
7708 | case KEY_dbmclose: | |
7709 | UNI(OP_DBMCLOSE); | |
7710 | ||
7711 | case KEY_dump: | |
c31f6d3b | 7712 | PL_expect = XOPERATOR; |
a0d0e21e | 7713 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7714 | LOOPX(OP_DUMP); |
7715 | ||
7716 | case KEY_else: | |
7717 | PREBLOCK(ELSE); | |
7718 | ||
7719 | case KEY_elsif: | |
6154021b | 7720 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7721 | OPERATOR(ELSIF); |
7722 | ||
7723 | case KEY_eq: | |
78cdf107 Z |
7724 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7725 | return REPORT(0); | |
79072805 LW |
7726 | Eop(OP_SEQ); |
7727 | ||
a0d0e21e LW |
7728 | case KEY_exists: |
7729 | UNI(OP_EXISTS); | |
4e553d73 | 7730 | |
79072805 | 7731 | case KEY_exit: |
5db06880 NC |
7732 | if (PL_madskills) |
7733 | UNI(OP_INT); | |
79072805 LW |
7734 | UNI(OP_EXIT); |
7735 | ||
7736 | case KEY_eval: | |
29595ff2 | 7737 | s = SKIPSPACE1(s); |
32e2a35d RGS |
7738 | if (*s == '{') { /* block eval */ |
7739 | PL_expect = XTERMBLOCK; | |
7740 | UNIBRACK(OP_ENTERTRY); | |
7741 | } | |
7742 | else { /* string eval */ | |
7743 | PL_expect = XTERM; | |
7744 | UNIBRACK(OP_ENTEREVAL); | |
7745 | } | |
79072805 | 7746 | |
7d789282 FC |
7747 | case KEY_evalbytes: |
7748 | PL_expect = XTERM; | |
7749 | UNIBRACK(-OP_ENTEREVAL); | |
7750 | ||
79072805 LW |
7751 | case KEY_eof: |
7752 | UNI(OP_EOF); | |
7753 | ||
7754 | case KEY_exp: | |
7755 | UNI(OP_EXP); | |
7756 | ||
7757 | case KEY_each: | |
7758 | UNI(OP_EACH); | |
7759 | ||
7760 | case KEY_exec: | |
a0d0e21e | 7761 | LOP(OP_EXEC,XREF); |
79072805 LW |
7762 | |
7763 | case KEY_endhostent: | |
7764 | FUN0(OP_EHOSTENT); | |
7765 | ||
7766 | case KEY_endnetent: | |
7767 | FUN0(OP_ENETENT); | |
7768 | ||
7769 | case KEY_endservent: | |
7770 | FUN0(OP_ESERVENT); | |
7771 | ||
7772 | case KEY_endprotoent: | |
7773 | FUN0(OP_EPROTOENT); | |
7774 | ||
7775 | case KEY_endpwent: | |
7776 | FUN0(OP_EPWENT); | |
7777 | ||
7778 | case KEY_endgrent: | |
7779 | FUN0(OP_EGRENT); | |
7780 | ||
7781 | case KEY_for: | |
7782 | case KEY_foreach: | |
78cdf107 Z |
7783 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7784 | return REPORT(0); | |
6154021b | 7785 | pl_yylval.ival = CopLINE(PL_curcop); |
29595ff2 | 7786 | s = SKIPSPACE1(s); |
7e2040f0 | 7787 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 7788 | char *p = s; |
5db06880 NC |
7789 | #ifdef PERL_MAD |
7790 | int soff = s - SvPVX(PL_linestr); /* for skipspace realloc */ | |
7791 | #endif | |
7792 | ||
3280af22 | 7793 | if ((PL_bufend - p) >= 3 && |
55497cff | 7794 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
7795 | p += 2; | |
77ca0c92 LW |
7796 | else if ((PL_bufend - p) >= 4 && |
7797 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
7798 | p += 3; | |
29595ff2 | 7799 | p = PEEKSPACE(p); |
7e2040f0 | 7800 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
7801 | p = scan_ident(p, PL_bufend, |
7802 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
29595ff2 | 7803 | p = PEEKSPACE(p); |
77ca0c92 LW |
7804 | } |
7805 | if (*p != '$') | |
cea2e8a9 | 7806 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
5db06880 NC |
7807 | #ifdef PERL_MAD |
7808 | s = SvPVX(PL_linestr) + soff; | |
7809 | #endif | |
55497cff | 7810 | } |
79072805 LW |
7811 | OPERATOR(FOR); |
7812 | ||
7813 | case KEY_formline: | |
a0d0e21e | 7814 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
7815 | |
7816 | case KEY_fork: | |
7817 | FUN0(OP_FORK); | |
7818 | ||
838f2281 BF |
7819 | case KEY_fc: |
7820 | UNI(OP_FC); | |
7821 | ||
79072805 | 7822 | case KEY_fcntl: |
a0d0e21e | 7823 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
7824 | |
7825 | case KEY_fileno: | |
7826 | UNI(OP_FILENO); | |
7827 | ||
7828 | case KEY_flock: | |
a0d0e21e | 7829 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
7830 | |
7831 | case KEY_gt: | |
78cdf107 Z |
7832 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7833 | return REPORT(0); | |
79072805 LW |
7834 | Rop(OP_SGT); |
7835 | ||
7836 | case KEY_ge: | |
78cdf107 Z |
7837 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7838 | return REPORT(0); | |
79072805 LW |
7839 | Rop(OP_SGE); |
7840 | ||
7841 | case KEY_grep: | |
2c38e13d | 7842 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
7843 | |
7844 | case KEY_goto: | |
c31f6d3b | 7845 | PL_expect = XOPERATOR; |
a0d0e21e | 7846 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7847 | LOOPX(OP_GOTO); |
7848 | ||
7849 | case KEY_gmtime: | |
7850 | UNI(OP_GMTIME); | |
7851 | ||
7852 | case KEY_getc: | |
6f33ba73 | 7853 | UNIDOR(OP_GETC); |
79072805 LW |
7854 | |
7855 | case KEY_getppid: | |
7856 | FUN0(OP_GETPPID); | |
7857 | ||
7858 | case KEY_getpgrp: | |
7859 | UNI(OP_GETPGRP); | |
7860 | ||
7861 | case KEY_getpriority: | |
a0d0e21e | 7862 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
7863 | |
7864 | case KEY_getprotobyname: | |
7865 | UNI(OP_GPBYNAME); | |
7866 | ||
7867 | case KEY_getprotobynumber: | |
a0d0e21e | 7868 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
7869 | |
7870 | case KEY_getprotoent: | |
7871 | FUN0(OP_GPROTOENT); | |
7872 | ||
7873 | case KEY_getpwent: | |
7874 | FUN0(OP_GPWENT); | |
7875 | ||
7876 | case KEY_getpwnam: | |
ff68c719 | 7877 | UNI(OP_GPWNAM); |
79072805 LW |
7878 | |
7879 | case KEY_getpwuid: | |
ff68c719 | 7880 | UNI(OP_GPWUID); |
79072805 LW |
7881 | |
7882 | case KEY_getpeername: | |
7883 | UNI(OP_GETPEERNAME); | |
7884 | ||
7885 | case KEY_gethostbyname: | |
7886 | UNI(OP_GHBYNAME); | |
7887 | ||
7888 | case KEY_gethostbyaddr: | |
a0d0e21e | 7889 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
7890 | |
7891 | case KEY_gethostent: | |
7892 | FUN0(OP_GHOSTENT); | |
7893 | ||
7894 | case KEY_getnetbyname: | |
7895 | UNI(OP_GNBYNAME); | |
7896 | ||
7897 | case KEY_getnetbyaddr: | |
a0d0e21e | 7898 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
7899 | |
7900 | case KEY_getnetent: | |
7901 | FUN0(OP_GNETENT); | |
7902 | ||
7903 | case KEY_getservbyname: | |
a0d0e21e | 7904 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
7905 | |
7906 | case KEY_getservbyport: | |
a0d0e21e | 7907 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
7908 | |
7909 | case KEY_getservent: | |
7910 | FUN0(OP_GSERVENT); | |
7911 | ||
7912 | case KEY_getsockname: | |
7913 | UNI(OP_GETSOCKNAME); | |
7914 | ||
7915 | case KEY_getsockopt: | |
a0d0e21e | 7916 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
7917 | |
7918 | case KEY_getgrent: | |
7919 | FUN0(OP_GGRENT); | |
7920 | ||
7921 | case KEY_getgrnam: | |
ff68c719 | 7922 | UNI(OP_GGRNAM); |
79072805 LW |
7923 | |
7924 | case KEY_getgrgid: | |
ff68c719 | 7925 | UNI(OP_GGRGID); |
79072805 LW |
7926 | |
7927 | case KEY_getlogin: | |
7928 | FUN0(OP_GETLOGIN); | |
7929 | ||
0d863452 | 7930 | case KEY_given: |
6154021b | 7931 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
7932 | OPERATOR(GIVEN); |
7933 | ||
93a17b20 | 7934 | case KEY_glob: |
d67594ff FC |
7935 | LOP( |
7936 | orig_keyword==KEY_glob ? (orig_keyword=0, -OP_GLOB) : OP_GLOB, | |
7937 | XTERM | |
7938 | ); | |
93a17b20 | 7939 | |
79072805 LW |
7940 | case KEY_hex: |
7941 | UNI(OP_HEX); | |
7942 | ||
7943 | case KEY_if: | |
78cdf107 Z |
7944 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7945 | return REPORT(0); | |
6154021b | 7946 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7947 | OPERATOR(IF); |
7948 | ||
7949 | case KEY_index: | |
a0d0e21e | 7950 | LOP(OP_INDEX,XTERM); |
79072805 LW |
7951 | |
7952 | case KEY_int: | |
7953 | UNI(OP_INT); | |
7954 | ||
7955 | case KEY_ioctl: | |
a0d0e21e | 7956 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
7957 | |
7958 | case KEY_join: | |
a0d0e21e | 7959 | LOP(OP_JOIN,XTERM); |
79072805 LW |
7960 | |
7961 | case KEY_keys: | |
7962 | UNI(OP_KEYS); | |
7963 | ||
7964 | case KEY_kill: | |
a0d0e21e | 7965 | LOP(OP_KILL,XTERM); |
79072805 LW |
7966 | |
7967 | case KEY_last: | |
c31f6d3b | 7968 | PL_expect = XOPERATOR; |
a0d0e21e | 7969 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 7970 | LOOPX(OP_LAST); |
4e553d73 | 7971 | |
79072805 LW |
7972 | case KEY_lc: |
7973 | UNI(OP_LC); | |
7974 | ||
7975 | case KEY_lcfirst: | |
7976 | UNI(OP_LCFIRST); | |
7977 | ||
7978 | case KEY_local: | |
6154021b | 7979 | pl_yylval.ival = 0; |
79072805 LW |
7980 | OPERATOR(LOCAL); |
7981 | ||
7982 | case KEY_length: | |
7983 | UNI(OP_LENGTH); | |
7984 | ||
7985 | case KEY_lt: | |
78cdf107 Z |
7986 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7987 | return REPORT(0); | |
79072805 LW |
7988 | Rop(OP_SLT); |
7989 | ||
7990 | case KEY_le: | |
78cdf107 Z |
7991 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7992 | return REPORT(0); | |
79072805 LW |
7993 | Rop(OP_SLE); |
7994 | ||
7995 | case KEY_localtime: | |
7996 | UNI(OP_LOCALTIME); | |
7997 | ||
7998 | case KEY_log: | |
7999 | UNI(OP_LOG); | |
8000 | ||
8001 | case KEY_link: | |
a0d0e21e | 8002 | LOP(OP_LINK,XTERM); |
79072805 LW |
8003 | |
8004 | case KEY_listen: | |
a0d0e21e | 8005 | LOP(OP_LISTEN,XTERM); |
79072805 | 8006 | |
c0329465 MB |
8007 | case KEY_lock: |
8008 | UNI(OP_LOCK); | |
8009 | ||
79072805 LW |
8010 | case KEY_lstat: |
8011 | UNI(OP_LSTAT); | |
8012 | ||
8013 | case KEY_m: | |
8782bef2 | 8014 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
8015 | TERM(sublex_start()); |
8016 | ||
a0d0e21e | 8017 | case KEY_map: |
2c38e13d | 8018 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 8019 | |
79072805 | 8020 | case KEY_mkdir: |
a0d0e21e | 8021 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
8022 | |
8023 | case KEY_msgctl: | |
a0d0e21e | 8024 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
8025 | |
8026 | case KEY_msgget: | |
a0d0e21e | 8027 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
8028 | |
8029 | case KEY_msgrcv: | |
a0d0e21e | 8030 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
8031 | |
8032 | case KEY_msgsnd: | |
a0d0e21e | 8033 | LOP(OP_MSGSND,XTERM); |
79072805 | 8034 | |
77ca0c92 | 8035 | case KEY_our: |
93a17b20 | 8036 | case KEY_my: |
952306ac | 8037 | case KEY_state: |
eac04b2e | 8038 | PL_in_my = (U16)tmp; |
29595ff2 | 8039 | s = SKIPSPACE1(s); |
7e2040f0 | 8040 | if (isIDFIRST_lazy_if(s,UTF)) { |
5db06880 NC |
8041 | #ifdef PERL_MAD |
8042 | char* start = s; | |
8043 | #endif | |
3280af22 | 8044 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 | 8045 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
e7d0b801 FC |
8046 | { |
8047 | if (!FEATURE_LEXSUBS_IS_ENABLED) | |
8048 | Perl_croak(aTHX_ | |
8049 | "Experimental \"%s\" subs not enabled", | |
8050 | tmp == KEY_my ? "my" : | |
8051 | tmp == KEY_state ? "state" : "our"); | |
64fbf0dd FC |
8052 | Perl_ck_warner_d(aTHX_ |
8053 | packWARN(WARN_EXPERIMENTAL__LEXICAL_SUBS), | |
8054 | "The lexical_subs feature is experimental"); | |
09bef843 | 8055 | goto really_sub; |
e7d0b801 | 8056 | } |
def3634b | 8057 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 8058 | if (!PL_in_my_stash) { |
c750a3ec | 8059 | char tmpbuf[1024]; |
3280af22 | 8060 | PL_bufptr = s; |
d9fad198 | 8061 | my_snprintf(tmpbuf, sizeof(tmpbuf), "No such class %.1000s", PL_tokenbuf); |
3c54b17a | 8062 | yyerror_pv(tmpbuf, UTF ? SVf_UTF8 : 0); |
c750a3ec | 8063 | } |
5db06880 NC |
8064 | #ifdef PERL_MAD |
8065 | if (PL_madskills) { /* just add type to declarator token */ | |
cd81e915 NC |
8066 | sv_catsv(PL_thistoken, PL_nextwhite); |
8067 | PL_nextwhite = 0; | |
8068 | sv_catpvn(PL_thistoken, start, s - start); | |
5db06880 NC |
8069 | } |
8070 | #endif | |
c750a3ec | 8071 | } |
6154021b | 8072 | pl_yylval.ival = 1; |
55497cff | 8073 | OPERATOR(MY); |
93a17b20 | 8074 | |
79072805 | 8075 | case KEY_next: |
c31f6d3b | 8076 | PL_expect = XOPERATOR; |
a0d0e21e | 8077 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
8078 | LOOPX(OP_NEXT); |
8079 | ||
8080 | case KEY_ne: | |
78cdf107 Z |
8081 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
8082 | return REPORT(0); | |
79072805 LW |
8083 | Eop(OP_SNE); |
8084 | ||
a0d0e21e | 8085 | case KEY_no: |
468aa647 | 8086 | s = tokenize_use(0, s); |
52d0e95b | 8087 | TERM(USE); |
a0d0e21e LW |
8088 | |
8089 | case KEY_not: | |
29595ff2 | 8090 | if (*s == '(' || (s = SKIPSPACE1(s), *s == '(')) |
2d2e263d | 8091 | FUN1(OP_NOT); |
78cdf107 Z |
8092 | else { |
8093 | if (!PL_lex_allbrackets && | |
8094 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
8095 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
2d2e263d | 8096 | OPERATOR(NOTOP); |
78cdf107 | 8097 | } |
a0d0e21e | 8098 | |
79072805 | 8099 | case KEY_open: |
29595ff2 | 8100 | s = SKIPSPACE1(s); |
7e2040f0 | 8101 | if (isIDFIRST_lazy_if(s,UTF)) { |
f54cb97a | 8102 | const char *t; |
8a2bca12 | 8103 | for (d = s; isWORDCHAR_lazy_if(d,UTF);) { |
71aa9713 BF |
8104 | d += UTF ? UTF8SKIP(d) : 1; |
8105 | if (UTF) { | |
7dbf68d2 | 8106 | while (UTF8_IS_CONTINUED(*d) && _is_utf8_mark((U8*)d)) { |
71aa9713 BF |
8107 | d += UTF ? UTF8SKIP(d) : 1; |
8108 | } | |
8109 | } | |
8110 | } | |
c35e046a AL |
8111 | for (t=d; isSPACE(*t);) |
8112 | t++; | |
e2ab214b | 8113 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) |
66fbe8fb HS |
8114 | /* [perl #16184] */ |
8115 | && !(t[0] == '=' && t[1] == '>') | |
db3abe52 | 8116 | && !(t[0] == ':' && t[1] == ':') |
240d1b6f | 8117 | && !keyword(s, d-s, 0) |
66fbe8fb | 8118 | ) { |
71aa9713 BF |
8119 | SV *tmpsv = newSVpvn_flags(s, (STRLEN)(d-s), |
8120 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)); | |
9014280d | 8121 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
71aa9713 BF |
8122 | "Precedence problem: open %"SVf" should be open(%"SVf")", |
8123 | SVfARG(tmpsv), SVfARG(tmpsv)); | |
66fbe8fb | 8124 | } |
93a17b20 | 8125 | } |
a0d0e21e | 8126 | LOP(OP_OPEN,XTERM); |
79072805 | 8127 | |
463ee0b2 | 8128 | case KEY_or: |
78cdf107 Z |
8129 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
8130 | return REPORT(0); | |
6154021b | 8131 | pl_yylval.ival = OP_OR; |
463ee0b2 LW |
8132 | OPERATOR(OROP); |
8133 | ||
79072805 LW |
8134 | case KEY_ord: |
8135 | UNI(OP_ORD); | |
8136 | ||
8137 | case KEY_oct: | |
8138 | UNI(OP_OCT); | |
8139 | ||
8140 | case KEY_opendir: | |
a0d0e21e | 8141 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
8142 | |
8143 | case KEY_print: | |
3280af22 | 8144 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 8145 | LOP(OP_PRINT,XREF); |
79072805 LW |
8146 | |
8147 | case KEY_printf: | |
3280af22 | 8148 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 8149 | LOP(OP_PRTF,XREF); |
79072805 | 8150 | |
c07a80fd | 8151 | case KEY_prototype: |
8152 | UNI(OP_PROTOTYPE); | |
8153 | ||
79072805 | 8154 | case KEY_push: |
a0d0e21e | 8155 | LOP(OP_PUSH,XTERM); |
79072805 LW |
8156 | |
8157 | case KEY_pop: | |
6f33ba73 | 8158 | UNIDOR(OP_POP); |
79072805 | 8159 | |
a0d0e21e | 8160 | case KEY_pos: |
6f33ba73 | 8161 | UNIDOR(OP_POS); |
4e553d73 | 8162 | |
79072805 | 8163 | case KEY_pack: |
a0d0e21e | 8164 | LOP(OP_PACK,XTERM); |
79072805 LW |
8165 | |
8166 | case KEY_package: | |
a0d0e21e | 8167 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
14a86d0c | 8168 | s = SKIPSPACE1(s); |
91152fc1 | 8169 | s = force_strict_version(s); |
4e4da3ac | 8170 | PL_lex_expect = XBLOCK; |
79072805 LW |
8171 | OPERATOR(PACKAGE); |
8172 | ||
8173 | case KEY_pipe: | |
a0d0e21e | 8174 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
8175 | |
8176 | case KEY_q: | |
4d68ffa0 | 8177 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 8178 | if (!s) |
d4c19fe8 | 8179 | missingterm(NULL); |
6154021b | 8180 | pl_yylval.ival = OP_CONST; |
79072805 LW |
8181 | TERM(sublex_start()); |
8182 | ||
a0d0e21e LW |
8183 | case KEY_quotemeta: |
8184 | UNI(OP_QUOTEMETA); | |
8185 | ||
ea25a9b2 Z |
8186 | case KEY_qw: { |
8187 | OP *words = NULL; | |
4d68ffa0 | 8188 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
8990e307 | 8189 | if (!s) |
d4c19fe8 | 8190 | missingterm(NULL); |
3480a8d2 | 8191 | PL_expect = XOPERATOR; |
8127e0e3 | 8192 | if (SvCUR(PL_lex_stuff)) { |
7e03b518 EB |
8193 | int warned_comma = !ckWARN(WARN_QW); |
8194 | int warned_comment = warned_comma; | |
3280af22 | 8195 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 8196 | while (len) { |
d4c19fe8 AL |
8197 | for (; isSPACE(*d) && len; --len, ++d) |
8198 | /**/; | |
8127e0e3 | 8199 | if (len) { |
d4c19fe8 | 8200 | SV *sv; |
f54cb97a | 8201 | const char *b = d; |
7e03b518 | 8202 | if (!warned_comma || !warned_comment) { |
8127e0e3 | 8203 | for (; !isSPACE(*d) && len; --len, ++d) { |
7e03b518 | 8204 | if (!warned_comma && *d == ',') { |
9014280d | 8205 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 8206 | "Possible attempt to separate words with commas"); |
7e03b518 | 8207 | ++warned_comma; |
8127e0e3 | 8208 | } |
7e03b518 | 8209 | else if (!warned_comment && *d == '#') { |
9014280d | 8210 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 8211 | "Possible attempt to put comments in qw() list"); |
7e03b518 | 8212 | ++warned_comment; |
8127e0e3 GS |
8213 | } |
8214 | } | |
8215 | } | |
8216 | else { | |
d4c19fe8 AL |
8217 | for (; !isSPACE(*d) && len; --len, ++d) |
8218 | /**/; | |
8127e0e3 | 8219 | } |
740cce10 | 8220 | sv = newSVpvn_utf8(b, d-b, DO_UTF8(PL_lex_stuff)); |
2fcb4757 | 8221 | words = op_append_elem(OP_LIST, words, |
7948272d | 8222 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 8223 | } |
8224 | } | |
8225 | } | |
ea25a9b2 Z |
8226 | if (!words) |
8227 | words = newNULLLIST(); | |
37fd879b | 8228 | if (PL_lex_stuff) { |
8127e0e3 | 8229 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 8230 | PL_lex_stuff = NULL; |
37fd879b | 8231 | } |
ea25a9b2 Z |
8232 | PL_expect = XOPERATOR; |
8233 | pl_yylval.opval = sawparens(words); | |
8234 | TOKEN(QWLIST); | |
8235 | } | |
8990e307 | 8236 | |
79072805 | 8237 | case KEY_qq: |
4d68ffa0 | 8238 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 8239 | if (!s) |
d4c19fe8 | 8240 | missingterm(NULL); |
6154021b | 8241 | pl_yylval.ival = OP_STRINGIFY; |
3280af22 | 8242 | if (SvIVX(PL_lex_stuff) == '\'') |
486ec47a | 8243 | SvIV_set(PL_lex_stuff, 0); /* qq'$foo' should interpolate */ |
79072805 LW |
8244 | TERM(sublex_start()); |
8245 | ||
8782bef2 GB |
8246 | case KEY_qr: |
8247 | s = scan_pat(s,OP_QR); | |
8248 | TERM(sublex_start()); | |
8249 | ||
79072805 | 8250 | case KEY_qx: |
4d68ffa0 | 8251 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 8252 | if (!s) |
d4c19fe8 | 8253 | missingterm(NULL); |
9b201d7d | 8254 | readpipe_override(); |
79072805 LW |
8255 | TERM(sublex_start()); |
8256 | ||
8257 | case KEY_return: | |
8258 | OLDLOP(OP_RETURN); | |
8259 | ||
8260 | case KEY_require: | |
29595ff2 | 8261 | s = SKIPSPACE1(s); |
c31f6d3b | 8262 | PL_expect = XOPERATOR; |
e759cc13 RGS |
8263 | if (isDIGIT(*s)) { |
8264 | s = force_version(s, FALSE); | |
a7cb1f99 | 8265 | } |
e759cc13 RGS |
8266 | else if (*s != 'v' || !isDIGIT(s[1]) |
8267 | || (s = force_version(s, TRUE), *s == 'v')) | |
8268 | { | |
a7cb1f99 GS |
8269 | *PL_tokenbuf = '\0'; |
8270 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 8271 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
af9f5953 BF |
8272 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), |
8273 | GV_ADD | (UTF ? SVf_UTF8 : 0)); | |
a7cb1f99 GS |
8274 | else if (*s == '<') |
8275 | yyerror("<> should be quotes"); | |
8276 | } | |
a72a1c8b RGS |
8277 | if (orig_keyword == KEY_require) { |
8278 | orig_keyword = 0; | |
6154021b | 8279 | pl_yylval.ival = 1; |
a72a1c8b RGS |
8280 | } |
8281 | else | |
6154021b | 8282 | pl_yylval.ival = 0; |
a72a1c8b RGS |
8283 | PL_expect = XTERM; |
8284 | PL_bufptr = s; | |
8285 | PL_last_uni = PL_oldbufptr; | |
8286 | PL_last_lop_op = OP_REQUIRE; | |
8287 | s = skipspace(s); | |
8288 | return REPORT( (int)REQUIRE ); | |
79072805 LW |
8289 | |
8290 | case KEY_reset: | |
8291 | UNI(OP_RESET); | |
8292 | ||
8293 | case KEY_redo: | |
c31f6d3b | 8294 | PL_expect = XOPERATOR; |
a0d0e21e | 8295 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
8296 | LOOPX(OP_REDO); |
8297 | ||
8298 | case KEY_rename: | |
a0d0e21e | 8299 | LOP(OP_RENAME,XTERM); |
79072805 LW |
8300 | |
8301 | case KEY_rand: | |
8302 | UNI(OP_RAND); | |
8303 | ||
8304 | case KEY_rmdir: | |
8305 | UNI(OP_RMDIR); | |
8306 | ||
8307 | case KEY_rindex: | |
a0d0e21e | 8308 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
8309 | |
8310 | case KEY_read: | |
a0d0e21e | 8311 | LOP(OP_READ,XTERM); |
79072805 LW |
8312 | |
8313 | case KEY_readdir: | |
8314 | UNI(OP_READDIR); | |
8315 | ||
93a17b20 | 8316 | case KEY_readline: |
6f33ba73 | 8317 | UNIDOR(OP_READLINE); |
93a17b20 LW |
8318 | |
8319 | case KEY_readpipe: | |
0858480c | 8320 | UNIDOR(OP_BACKTICK); |
93a17b20 | 8321 | |
79072805 LW |
8322 | case KEY_rewinddir: |
8323 | UNI(OP_REWINDDIR); | |
8324 | ||
8325 | case KEY_recv: | |
a0d0e21e | 8326 | LOP(OP_RECV,XTERM); |
79072805 LW |
8327 | |
8328 | case KEY_reverse: | |
a0d0e21e | 8329 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
8330 | |
8331 | case KEY_readlink: | |
6f33ba73 | 8332 | UNIDOR(OP_READLINK); |
79072805 LW |
8333 | |
8334 | case KEY_ref: | |
8335 | UNI(OP_REF); | |
8336 | ||
8337 | case KEY_s: | |
8338 | s = scan_subst(s); | |
6154021b | 8339 | if (pl_yylval.opval) |
79072805 LW |
8340 | TERM(sublex_start()); |
8341 | else | |
8342 | TOKEN(1); /* force error */ | |
8343 | ||
0d863452 RH |
8344 | case KEY_say: |
8345 | checkcomma(s,PL_tokenbuf,"filehandle"); | |
8346 | LOP(OP_SAY,XREF); | |
8347 | ||
a0d0e21e LW |
8348 | case KEY_chomp: |
8349 | UNI(OP_CHOMP); | |
4e553d73 | 8350 | |
79072805 LW |
8351 | case KEY_scalar: |
8352 | UNI(OP_SCALAR); | |
8353 | ||
8354 | case KEY_select: | |
a0d0e21e | 8355 | LOP(OP_SELECT,XTERM); |
79072805 LW |
8356 | |
8357 | case KEY_seek: | |
a0d0e21e | 8358 | LOP(OP_SEEK,XTERM); |
79072805 LW |
8359 | |
8360 | case KEY_semctl: | |
a0d0e21e | 8361 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
8362 | |
8363 | case KEY_semget: | |
a0d0e21e | 8364 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
8365 | |
8366 | case KEY_semop: | |
a0d0e21e | 8367 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
8368 | |
8369 | case KEY_send: | |
a0d0e21e | 8370 | LOP(OP_SEND,XTERM); |
79072805 LW |
8371 | |
8372 | case KEY_setpgrp: | |
a0d0e21e | 8373 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
8374 | |
8375 | case KEY_setpriority: | |
a0d0e21e | 8376 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
8377 | |
8378 | case KEY_sethostent: | |
ff68c719 | 8379 | UNI(OP_SHOSTENT); |
79072805 LW |
8380 | |
8381 | case KEY_setnetent: | |
ff68c719 | 8382 | UNI(OP_SNETENT); |
79072805 LW |
8383 | |
8384 | case KEY_setservent: | |
ff68c719 | 8385 | UNI(OP_SSERVENT); |
79072805 LW |
8386 | |
8387 | case KEY_setprotoent: | |
ff68c719 | 8388 | UNI(OP_SPROTOENT); |
79072805 LW |
8389 | |
8390 | case KEY_setpwent: | |
8391 | FUN0(OP_SPWENT); | |
8392 | ||
8393 | case KEY_setgrent: | |
8394 | FUN0(OP_SGRENT); | |
8395 | ||
8396 | case KEY_seekdir: | |
a0d0e21e | 8397 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
8398 | |
8399 | case KEY_setsockopt: | |
a0d0e21e | 8400 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
8401 | |
8402 | case KEY_shift: | |
6f33ba73 | 8403 | UNIDOR(OP_SHIFT); |
79072805 LW |
8404 | |
8405 | case KEY_shmctl: | |
a0d0e21e | 8406 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
8407 | |
8408 | case KEY_shmget: | |
a0d0e21e | 8409 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
8410 | |
8411 | case KEY_shmread: | |
a0d0e21e | 8412 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
8413 | |
8414 | case KEY_shmwrite: | |
a0d0e21e | 8415 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
8416 | |
8417 | case KEY_shutdown: | |
a0d0e21e | 8418 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
8419 | |
8420 | case KEY_sin: | |
8421 | UNI(OP_SIN); | |
8422 | ||
8423 | case KEY_sleep: | |
8424 | UNI(OP_SLEEP); | |
8425 | ||
8426 | case KEY_socket: | |
a0d0e21e | 8427 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
8428 | |
8429 | case KEY_socketpair: | |
a0d0e21e | 8430 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
8431 | |
8432 | case KEY_sort: | |
3280af22 | 8433 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
29595ff2 | 8434 | s = SKIPSPACE1(s); |
3280af22 | 8435 | PL_expect = XTERM; |
15f0808c | 8436 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 8437 | LOP(OP_SORT,XREF); |
79072805 LW |
8438 | |
8439 | case KEY_split: | |
a0d0e21e | 8440 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
8441 | |
8442 | case KEY_sprintf: | |
a0d0e21e | 8443 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
8444 | |
8445 | case KEY_splice: | |
a0d0e21e | 8446 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
8447 | |
8448 | case KEY_sqrt: | |
8449 | UNI(OP_SQRT); | |
8450 | ||
8451 | case KEY_srand: | |
8452 | UNI(OP_SRAND); | |
8453 | ||
8454 | case KEY_stat: | |
8455 | UNI(OP_STAT); | |
8456 | ||
8457 | case KEY_study: | |
79072805 LW |
8458 | UNI(OP_STUDY); |
8459 | ||
8460 | case KEY_substr: | |
a0d0e21e | 8461 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
8462 | |
8463 | case KEY_format: | |
8464 | case KEY_sub: | |
93a17b20 | 8465 | really_sub: |
09bef843 | 8466 | { |
24b6ef70 | 8467 | char * const tmpbuf = PL_tokenbuf + 1; |
9c5ffd7c | 8468 | SSize_t tboffset = 0; |
09bef843 | 8469 | expectation attrful; |
28cc6278 | 8470 | bool have_name, have_proto; |
f54cb97a | 8471 | const int key = tmp; |
09bef843 | 8472 | |
5db06880 NC |
8473 | #ifdef PERL_MAD |
8474 | SV *tmpwhite = 0; | |
8475 | ||
cd81e915 | 8476 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
1cac5c33 FC |
8477 | SV *subtoken = PL_madskills |
8478 | ? newSVpvn_flags(tstart, s - tstart, SvUTF8(PL_linestr)) | |
8479 | : NULL; | |
cd81e915 | 8480 | PL_thistoken = 0; |
5db06880 NC |
8481 | |
8482 | d = s; | |
8483 | s = SKIPSPACE2(s,tmpwhite); | |
8484 | #else | |
8767b1ab | 8485 | d = s; |
09bef843 | 8486 | s = skipspace(s); |
5db06880 | 8487 | #endif |
09bef843 | 8488 | |
7e2040f0 | 8489 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
8490 | (*s == ':' && s[1] == ':')) |
8491 | { | |
5db06880 | 8492 | #ifdef PERL_MAD |
4f61fd4b | 8493 | SV *nametoke = NULL; |
5db06880 NC |
8494 | #endif |
8495 | ||
09bef843 SB |
8496 | PL_expect = XBLOCK; |
8497 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
8498 | /* remember buffer pos'n for later force_word */ |
8499 | tboffset = s - PL_oldbufptr; | |
24b6ef70 FC |
8500 | d = scan_word(s, tmpbuf, sizeof PL_tokenbuf - 1, TRUE, |
8501 | &len); | |
5db06880 NC |
8502 | #ifdef PERL_MAD |
8503 | if (PL_madskills) | |
af9f5953 | 8504 | nametoke = newSVpvn_flags(s, d - s, SvUTF8(PL_linestr)); |
5db06880 | 8505 | #endif |
689aac7b FC |
8506 | *PL_tokenbuf = '&'; |
8507 | if (memchr(tmpbuf, ':', len) || key != KEY_sub | |
8508 | || pad_findmy_pvn( | |
8509 | PL_tokenbuf, len + 1, UTF ? SVf_UTF8 : 0 | |
8510 | ) != NOT_IN_PAD) | |
6502358f | 8511 | sv_setpvn(PL_subname, tmpbuf, len); |
09bef843 SB |
8512 | else { |
8513 | sv_setsv(PL_subname,PL_curstname); | |
396482e1 | 8514 | sv_catpvs(PL_subname,"::"); |
09bef843 SB |
8515 | sv_catpvn(PL_subname,tmpbuf,len); |
8516 | } | |
af9f5953 BF |
8517 | if (SvUTF8(PL_linestr)) |
8518 | SvUTF8_on(PL_subname); | |
09bef843 | 8519 | have_name = TRUE; |
5db06880 | 8520 | |
60ac52eb | 8521 | |
5db06880 | 8522 | #ifdef PERL_MAD |
60ac52eb FC |
8523 | start_force(0); |
8524 | CURMAD('X', nametoke); | |
8525 | CURMAD('_', tmpwhite); | |
4210d3f1 | 8526 | force_ident_maybe_lex('&'); |
5db06880 NC |
8527 | |
8528 | s = SKIPSPACE2(d,tmpwhite); | |
8529 | #else | |
8530 | s = skipspace(d); | |
8531 | #endif | |
09bef843 | 8532 | } |
463ee0b2 | 8533 | else { |
8767b1ab FC |
8534 | if (key == KEY_my || key == KEY_our || key==KEY_state) |
8535 | { | |
8536 | *d = '\0'; | |
8537 | /* diag_listed_as: Missing name in "%s sub" */ | |
8538 | Perl_croak(aTHX_ | |
8539 | "Missing name in \"%s\"", PL_bufptr); | |
8540 | } | |
09bef843 SB |
8541 | PL_expect = XTERMBLOCK; |
8542 | attrful = XATTRTERM; | |
76f68e9b | 8543 | sv_setpvs(PL_subname,"?"); |
09bef843 | 8544 | have_name = FALSE; |
463ee0b2 | 8545 | } |
4633a7c4 | 8546 | |
09bef843 | 8547 | if (key == KEY_format) { |
5db06880 | 8548 | #ifdef PERL_MAD |
cd81e915 | 8549 | PL_thistoken = subtoken; |
5db06880 NC |
8550 | s = d; |
8551 | #else | |
09bef843 | 8552 | if (have_name) |
b1b65b59 JH |
8553 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
8554 | FALSE, TRUE, TRUE); | |
5db06880 | 8555 | #endif |
64a40898 | 8556 | PREBLOCK(FORMAT); |
09bef843 | 8557 | } |
79072805 | 8558 | |
09bef843 SB |
8559 | /* Look for a prototype */ |
8560 | if (*s == '(') { | |
d9f2850e RGS |
8561 | char *p; |
8562 | bool bad_proto = FALSE; | |
9e8d7757 RB |
8563 | bool in_brackets = FALSE; |
8564 | char greedy_proto = ' '; | |
8565 | bool proto_after_greedy_proto = FALSE; | |
8566 | bool must_be_last = FALSE; | |
8567 | bool underscore = FALSE; | |
aef2a98a | 8568 | bool seen_underscore = FALSE; |
197afce1 | 8569 | const bool warnillegalproto = ckWARN(WARN_ILLEGALPROTO); |
dab1c735 | 8570 | STRLEN tmplen; |
09bef843 | 8571 | |
4d68ffa0 | 8572 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
37fd879b | 8573 | if (!s) |
09bef843 | 8574 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 8575 | /* strip spaces and check for bad characters */ |
dab1c735 | 8576 | d = SvPV(PL_lex_stuff, tmplen); |
09bef843 | 8577 | tmp = 0; |
dab1c735 | 8578 | for (p = d; tmplen; tmplen--, ++p) { |
d9f2850e | 8579 | if (!isSPACE(*p)) { |
dab1c735 | 8580 | d[tmp++] = *p; |
9e8d7757 | 8581 | |
197afce1 | 8582 | if (warnillegalproto) { |
9e8d7757 RB |
8583 | if (must_be_last) |
8584 | proto_after_greedy_proto = TRUE; | |
dab1c735 | 8585 | if (!strchr("$@%*;[]&\\_+", *p) || *p == '\0') { |
9e8d7757 RB |
8586 | bad_proto = TRUE; |
8587 | } | |
8588 | else { | |
8589 | if ( underscore ) { | |
34daab0f | 8590 | if ( !strchr(";@%", *p) ) |
9e8d7757 RB |
8591 | bad_proto = TRUE; |
8592 | underscore = FALSE; | |
8593 | } | |
8594 | if ( *p == '[' ) { | |
8595 | in_brackets = TRUE; | |
8596 | } | |
8597 | else if ( *p == ']' ) { | |
8598 | in_brackets = FALSE; | |
8599 | } | |
8600 | else if ( (*p == '@' || *p == '%') && | |
8601 | ( tmp < 2 || d[tmp-2] != '\\' ) && | |
8602 | !in_brackets ) { | |
8603 | must_be_last = TRUE; | |
8604 | greedy_proto = *p; | |
8605 | } | |
8606 | else if ( *p == '_' ) { | |
aef2a98a | 8607 | underscore = seen_underscore = TRUE; |
9e8d7757 RB |
8608 | } |
8609 | } | |
8610 | } | |
d37a9538 | 8611 | } |
09bef843 | 8612 | } |
dab1c735 | 8613 | d[tmp] = '\0'; |
9e8d7757 | 8614 | if (proto_after_greedy_proto) |
197afce1 | 8615 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
9e8d7757 RB |
8616 | "Prototype after '%c' for %"SVf" : %s", |
8617 | greedy_proto, SVfARG(PL_subname), d); | |
dab1c735 BF |
8618 | if (bad_proto) { |
8619 | SV *dsv = newSVpvs_flags("", SVs_TEMP); | |
197afce1 | 8620 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
aef2a98a RGS |
8621 | "Illegal character %sin prototype for %"SVf" : %s", |
8622 | seen_underscore ? "after '_' " : "", | |
dab1c735 | 8623 | SVfARG(PL_subname), |
97eb901d BF |
8624 | SvUTF8(PL_lex_stuff) |
8625 | ? sv_uni_display(dsv, | |
8626 | newSVpvn_flags(d, tmp, SVs_TEMP | SVf_UTF8), | |
8627 | tmp, | |
8628 | UNI_DISPLAY_ISPRINT) | |
8629 | : pv_pretty(dsv, d, tmp, 60, NULL, NULL, | |
8630 | PERL_PV_ESCAPE_NONASCII)); | |
dab1c735 BF |
8631 | } |
8632 | SvCUR_set(PL_lex_stuff, tmp); | |
09bef843 | 8633 | have_proto = TRUE; |
68dc0745 | 8634 | |
5db06880 NC |
8635 | #ifdef PERL_MAD |
8636 | start_force(0); | |
cd81e915 | 8637 | CURMAD('q', PL_thisopen); |
5db06880 | 8638 | CURMAD('_', tmpwhite); |
cd81e915 NC |
8639 | CURMAD('=', PL_thisstuff); |
8640 | CURMAD('Q', PL_thisclose); | |
5db06880 NC |
8641 | NEXTVAL_NEXTTOKE.opval = |
8642 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
1a9a51d4 | 8643 | PL_lex_stuff = NULL; |
5db06880 NC |
8644 | force_next(THING); |
8645 | ||
8646 | s = SKIPSPACE2(s,tmpwhite); | |
8647 | #else | |
09bef843 | 8648 | s = skipspace(s); |
5db06880 | 8649 | #endif |
4633a7c4 | 8650 | } |
09bef843 SB |
8651 | else |
8652 | have_proto = FALSE; | |
8653 | ||
8654 | if (*s == ':' && s[1] != ':') | |
8655 | PL_expect = attrful; | |
8e742a20 MHM |
8656 | else if (*s != '{' && key == KEY_sub) { |
8657 | if (!have_name) | |
8658 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
fd909433 | 8659 | else if (*s != ';' && *s != '}') |
be2597df | 8660 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, SVfARG(PL_subname)); |
8e742a20 | 8661 | } |
09bef843 | 8662 | |
5db06880 NC |
8663 | #ifdef PERL_MAD |
8664 | start_force(0); | |
8665 | if (tmpwhite) { | |
8666 | if (PL_madskills) | |
6b29d1f5 | 8667 | curmad('^', newSVpvs("")); |
5db06880 NC |
8668 | CURMAD('_', tmpwhite); |
8669 | } | |
8670 | force_next(0); | |
8671 | ||
cd81e915 | 8672 | PL_thistoken = subtoken; |
5db06880 | 8673 | #else |
09bef843 | 8674 | if (have_proto) { |
9ded7720 | 8675 | NEXTVAL_NEXTTOKE.opval = |
b1b65b59 | 8676 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); |
a0714e2c | 8677 | PL_lex_stuff = NULL; |
09bef843 | 8678 | force_next(THING); |
68dc0745 | 8679 | } |
5db06880 | 8680 | #endif |
09bef843 | 8681 | if (!have_name) { |
49a54bbe NC |
8682 | if (PL_curstash) |
8683 | sv_setpvs(PL_subname, "__ANON__"); | |
8684 | else | |
8685 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
09bef843 | 8686 | TOKEN(ANONSUB); |
4633a7c4 | 8687 | } |
5db06880 | 8688 | #ifndef PERL_MAD |
4210d3f1 | 8689 | force_ident_maybe_lex('&'); |
5db06880 | 8690 | #endif |
09bef843 | 8691 | TOKEN(SUB); |
4633a7c4 | 8692 | } |
79072805 LW |
8693 | |
8694 | case KEY_system: | |
a0d0e21e | 8695 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
8696 | |
8697 | case KEY_symlink: | |
a0d0e21e | 8698 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
8699 | |
8700 | case KEY_syscall: | |
a0d0e21e | 8701 | LOP(OP_SYSCALL,XTERM); |
79072805 | 8702 | |
c07a80fd | 8703 | case KEY_sysopen: |
8704 | LOP(OP_SYSOPEN,XTERM); | |
8705 | ||
137443ea | 8706 | case KEY_sysseek: |
8707 | LOP(OP_SYSSEEK,XTERM); | |
8708 | ||
79072805 | 8709 | case KEY_sysread: |
a0d0e21e | 8710 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
8711 | |
8712 | case KEY_syswrite: | |
a0d0e21e | 8713 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
8714 | |
8715 | case KEY_tr: | |
8ce4b50f | 8716 | case KEY_y: |
79072805 LW |
8717 | s = scan_trans(s); |
8718 | TERM(sublex_start()); | |
8719 | ||
8720 | case KEY_tell: | |
8721 | UNI(OP_TELL); | |
8722 | ||
8723 | case KEY_telldir: | |
8724 | UNI(OP_TELLDIR); | |
8725 | ||
463ee0b2 | 8726 | case KEY_tie: |
a0d0e21e | 8727 | LOP(OP_TIE,XTERM); |
463ee0b2 | 8728 | |
c07a80fd | 8729 | case KEY_tied: |
8730 | UNI(OP_TIED); | |
8731 | ||
79072805 LW |
8732 | case KEY_time: |
8733 | FUN0(OP_TIME); | |
8734 | ||
8735 | case KEY_times: | |
8736 | FUN0(OP_TMS); | |
8737 | ||
8738 | case KEY_truncate: | |
a0d0e21e | 8739 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
8740 | |
8741 | case KEY_uc: | |
8742 | UNI(OP_UC); | |
8743 | ||
8744 | case KEY_ucfirst: | |
8745 | UNI(OP_UCFIRST); | |
8746 | ||
463ee0b2 LW |
8747 | case KEY_untie: |
8748 | UNI(OP_UNTIE); | |
8749 | ||
79072805 | 8750 | case KEY_until: |
78cdf107 Z |
8751 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8752 | return REPORT(0); | |
6154021b | 8753 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8754 | OPERATOR(UNTIL); |
8755 | ||
8756 | case KEY_unless: | |
78cdf107 Z |
8757 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8758 | return REPORT(0); | |
6154021b | 8759 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8760 | OPERATOR(UNLESS); |
8761 | ||
8762 | case KEY_unlink: | |
a0d0e21e | 8763 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
8764 | |
8765 | case KEY_undef: | |
6f33ba73 | 8766 | UNIDOR(OP_UNDEF); |
79072805 LW |
8767 | |
8768 | case KEY_unpack: | |
a0d0e21e | 8769 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
8770 | |
8771 | case KEY_utime: | |
a0d0e21e | 8772 | LOP(OP_UTIME,XTERM); |
79072805 LW |
8773 | |
8774 | case KEY_umask: | |
6f33ba73 | 8775 | UNIDOR(OP_UMASK); |
79072805 LW |
8776 | |
8777 | case KEY_unshift: | |
a0d0e21e LW |
8778 | LOP(OP_UNSHIFT,XTERM); |
8779 | ||
8780 | case KEY_use: | |
468aa647 | 8781 | s = tokenize_use(1, s); |
a0d0e21e | 8782 | OPERATOR(USE); |
79072805 LW |
8783 | |
8784 | case KEY_values: | |
8785 | UNI(OP_VALUES); | |
8786 | ||
8787 | case KEY_vec: | |
a0d0e21e | 8788 | LOP(OP_VEC,XTERM); |
79072805 | 8789 | |
0d863452 | 8790 | case KEY_when: |
78cdf107 Z |
8791 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8792 | return REPORT(0); | |
6154021b | 8793 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
8794 | OPERATOR(WHEN); |
8795 | ||
79072805 | 8796 | case KEY_while: |
78cdf107 Z |
8797 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8798 | return REPORT(0); | |
6154021b | 8799 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8800 | OPERATOR(WHILE); |
8801 | ||
8802 | case KEY_warn: | |
3280af22 | 8803 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 8804 | LOP(OP_WARN,XTERM); |
79072805 LW |
8805 | |
8806 | case KEY_wait: | |
8807 | FUN0(OP_WAIT); | |
8808 | ||
8809 | case KEY_waitpid: | |
a0d0e21e | 8810 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
8811 | |
8812 | case KEY_wantarray: | |
8813 | FUN0(OP_WANTARRAY); | |
8814 | ||
8815 | case KEY_write: | |
9d116dd7 JH |
8816 | #ifdef EBCDIC |
8817 | { | |
df3728a2 JH |
8818 | char ctl_l[2]; |
8819 | ctl_l[0] = toCTRL('L'); | |
8820 | ctl_l[1] = '\0'; | |
fafc274c | 8821 | gv_fetchpvn_flags(ctl_l, 1, GV_ADD|GV_NOTQUAL, SVt_PV); |
9d116dd7 JH |
8822 | } |
8823 | #else | |
fafc274c NC |
8824 | /* Make sure $^L is defined */ |
8825 | gv_fetchpvs("\f", GV_ADD|GV_NOTQUAL, SVt_PV); | |
9d116dd7 | 8826 | #endif |
79072805 LW |
8827 | UNI(OP_ENTERWRITE); |
8828 | ||
8829 | case KEY_x: | |
78cdf107 Z |
8830 | if (PL_expect == XOPERATOR) { |
8831 | if (*s == '=' && !PL_lex_allbrackets && | |
8832 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
8833 | return REPORT(0); | |
79072805 | 8834 | Mop(OP_REPEAT); |
78cdf107 | 8835 | } |
79072805 LW |
8836 | check_uni(); |
8837 | goto just_a_word; | |
8838 | ||
a0d0e21e | 8839 | case KEY_xor: |
78cdf107 Z |
8840 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
8841 | return REPORT(0); | |
6154021b | 8842 | pl_yylval.ival = OP_XOR; |
a0d0e21e | 8843 | OPERATOR(OROP); |
79072805 | 8844 | } |
49dc05e3 | 8845 | }} |
79072805 | 8846 | } |
bf4acbe4 GS |
8847 | #ifdef __SC__ |
8848 | #pragma segment Main | |
8849 | #endif | |
79072805 | 8850 | |
3875fc11 FC |
8851 | /* |
8852 | S_pending_ident | |
8853 | ||
8854 | Looks up an identifier in the pad or in a package | |
8855 | ||
8856 | Returns: | |
8857 | PRIVATEREF if this is a lexical name. | |
8858 | WORD if this belongs to a package. | |
8859 | ||
8860 | Structure: | |
8861 | if we're in a my declaration | |
8862 | croak if they tried to say my($foo::bar) | |
8863 | build the ops for a my() declaration | |
8864 | if it's an access to a my() variable | |
8865 | build ops for access to a my() variable | |
8866 | if in a dq string, and they've said @foo and we can't find @foo | |
8867 | warn | |
8868 | build ops for a bareword | |
8869 | */ | |
8870 | ||
3f33d153 FC |
8871 | static int |
8872 | S_pending_ident(pTHX) | |
8eceec63 | 8873 | { |
97aff369 | 8874 | dVAR; |
bbd11bfc | 8875 | PADOFFSET tmp = 0; |
3f33d153 | 8876 | const char pit = (char)pl_yylval.ival; |
9bde8eb0 NC |
8877 | const STRLEN tokenbuf_len = strlen(PL_tokenbuf); |
8878 | /* All routes through this function want to know if there is a colon. */ | |
c099d646 | 8879 | const char *const has_colon = (const char*) memchr (PL_tokenbuf, ':', tokenbuf_len); |
8eceec63 | 8880 | |
3f33d153 FC |
8881 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
8882 | "### Pending identifier '%s'\n", PL_tokenbuf); }); | |
8eceec63 SC |
8883 | |
8884 | /* if we're in a my(), we can't allow dynamics here. | |
8885 | $foo'bar has already been turned into $foo::bar, so | |
8886 | just check for colons. | |
8887 | ||
8888 | if it's a legal name, the OP is a PADANY. | |
8889 | */ | |
8890 | if (PL_in_my) { | |
8891 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
9bde8eb0 | 8892 | if (has_colon) |
4bca4ee0 | 8893 | yyerror_pv(Perl_form(aTHX_ "No package name allowed for " |
8eceec63 | 8894 | "variable %s in \"our\"", |
4bca4ee0 | 8895 | PL_tokenbuf), UTF ? SVf_UTF8 : 0); |
bc9b26ca | 8896 | tmp = allocmy(PL_tokenbuf, tokenbuf_len, UTF ? SVf_UTF8 : 0); |
8eceec63 SC |
8897 | } |
8898 | else { | |
9bde8eb0 | 8899 | if (has_colon) |
58576270 BF |
8900 | yyerror_pv(Perl_form(aTHX_ PL_no_myglob, |
8901 | PL_in_my == KEY_my ? "my" : "state", PL_tokenbuf), | |
8902 | UTF ? SVf_UTF8 : 0); | |
8eceec63 | 8903 | |
3f33d153 FC |
8904 | pl_yylval.opval = newOP(OP_PADANY, 0); |
8905 | pl_yylval.opval->op_targ = allocmy(PL_tokenbuf, tokenbuf_len, | |
bc9b26ca | 8906 | UTF ? SVf_UTF8 : 0); |
3f33d153 | 8907 | return PRIVATEREF; |
8eceec63 SC |
8908 | } |
8909 | } | |
8910 | ||
8911 | /* | |
8912 | build the ops for accesses to a my() variable. | |
8eceec63 SC |
8913 | */ |
8914 | ||
9bde8eb0 | 8915 | if (!has_colon) { |
8716503d | 8916 | if (!PL_in_my) |
bc9b26ca BF |
8917 | tmp = pad_findmy_pvn(PL_tokenbuf, tokenbuf_len, |
8918 | UTF ? SVf_UTF8 : 0); | |
8716503d | 8919 | if (tmp != NOT_IN_PAD) { |
8eceec63 | 8920 | /* might be an "our" variable" */ |
00b1698f | 8921 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
8eceec63 | 8922 | /* build ops for a bareword */ |
b64e5050 AL |
8923 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
8924 | HEK * const stashname = HvNAME_HEK(stash); | |
8925 | SV * const sym = newSVhek(stashname); | |
396482e1 | 8926 | sv_catpvs(sym, "::"); |
2a33114a | 8927 | sv_catpvn_flags(sym, PL_tokenbuf+1, tokenbuf_len - 1, (UTF ? SV_CATUTF8 : SV_CATBYTES )); |
3f33d153 FC |
8928 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); |
8929 | pl_yylval.opval->op_private = OPpCONST_ENTERED; | |
4210d3f1 FC |
8930 | if (pit != '&') |
8931 | gv_fetchsv(sym, | |
8eceec63 SC |
8932 | (PL_in_eval |
8933 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 8934 | : GV_ADDMULTI |
8eceec63 SC |
8935 | ), |
8936 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
8937 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8938 | : SVt_PVHV)); | |
3f33d153 | 8939 | return WORD; |
8eceec63 SC |
8940 | } |
8941 | ||
3f33d153 FC |
8942 | pl_yylval.opval = newOP(OP_PADANY, 0); |
8943 | pl_yylval.opval->op_targ = tmp; | |
8944 | return PRIVATEREF; | |
8eceec63 SC |
8945 | } |
8946 | } | |
8947 | ||
8948 | /* | |
8949 | Whine if they've said @foo in a doublequoted string, | |
8950 | and @foo isn't a variable we can find in the symbol | |
8951 | table. | |
8952 | */ | |
d824713b NC |
8953 | if (ckWARN(WARN_AMBIGUOUS) && |
8954 | pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
0be4d16f BF |
8955 | GV *const gv = gv_fetchpvn_flags(PL_tokenbuf + 1, tokenbuf_len - 1, |
8956 | ( UTF ? SVf_UTF8 : 0 ), SVt_PVAV); | |
8eceec63 | 8957 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
e879d94f RGS |
8958 | /* DO NOT warn for @- and @+ */ |
8959 | && !( PL_tokenbuf[2] == '\0' && | |
8960 | ( PL_tokenbuf[1] == '-' || PL_tokenbuf[1] == '+' )) | |
8961 | ) | |
8eceec63 SC |
8962 | { |
8963 | /* Downgraded from fatal to warning 20000522 mjd */ | |
d824713b | 8964 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
29fb1d0e BF |
8965 | "Possible unintended interpolation of %"SVf" in string", |
8966 | SVfARG(newSVpvn_flags(PL_tokenbuf, tokenbuf_len, | |
8967 | SVs_TEMP | ( UTF ? SVf_UTF8 : 0 )))); | |
8eceec63 SC |
8968 | } |
8969 | } | |
8970 | ||
8971 | /* build ops for a bareword */ | |
3f33d153 FC |
8972 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
8973 | newSVpvn_flags(PL_tokenbuf + 1, | |
0be4d16f BF |
8974 | tokenbuf_len - 1, |
8975 | UTF ? SVf_UTF8 : 0 )); | |
3f33d153 | 8976 | pl_yylval.opval->op_private = OPpCONST_ENTERED; |
4210d3f1 FC |
8977 | if (pit != '&') |
8978 | gv_fetchpvn_flags(PL_tokenbuf+1, tokenbuf_len - 1, | |
0be4d16f BF |
8979 | (PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : GV_ADD) |
8980 | | ( UTF ? SVf_UTF8 : 0 ), | |
223f0fb7 NC |
8981 | ((PL_tokenbuf[0] == '$') ? SVt_PV |
8982 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8983 | : SVt_PVHV)); | |
3f33d153 | 8984 | return WORD; |
8eceec63 SC |
8985 | } |
8986 | ||
76e3520e | 8987 | STATIC void |
c94115d8 | 8988 | S_checkcomma(pTHX_ const char *s, const char *name, const char *what) |
a687059c | 8989 | { |
97aff369 | 8990 | dVAR; |
2f3197b3 | 8991 | |
7918f24d NC |
8992 | PERL_ARGS_ASSERT_CHECKCOMMA; |
8993 | ||
d008e5eb | 8994 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
8995 | if (ckWARN(WARN_SYNTAX)) { |
8996 | int level = 1; | |
26ff0806 | 8997 | const char *w; |
d008e5eb GS |
8998 | for (w = s+2; *w && level; w++) { |
8999 | if (*w == '(') | |
9000 | ++level; | |
9001 | else if (*w == ')') | |
9002 | --level; | |
9003 | } | |
888fea98 NC |
9004 | while (isSPACE(*w)) |
9005 | ++w; | |
b1439985 RGS |
9006 | /* the list of chars below is for end of statements or |
9007 | * block / parens, boolean operators (&&, ||, //) and branch | |
9008 | * constructs (or, and, if, until, unless, while, err, for). | |
9009 | * Not a very solid hack... */ | |
9010 | if (!*w || !strchr(";&/|})]oaiuwef!=", *w)) | |
9014280d | 9011 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 9012 | "%s (...) interpreted as function",name); |
d008e5eb | 9013 | } |
2f3197b3 | 9014 | } |
3280af22 | 9015 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 9016 | s++; |
a687059c LW |
9017 | if (*s == '(') |
9018 | s++; | |
3280af22 | 9019 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 9020 | s++; |
7e2040f0 | 9021 | if (isIDFIRST_lazy_if(s,UTF)) { |
d0fb66e4 BF |
9022 | const char * const w = s; |
9023 | s += UTF ? UTF8SKIP(s) : 1; | |
8a2bca12 | 9024 | while (isWORDCHAR_lazy_if(s,UTF)) |
d0fb66e4 | 9025 | s += UTF ? UTF8SKIP(s) : 1; |
3280af22 | 9026 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 9027 | s++; |
e929a76b | 9028 | if (*s == ',') { |
c94115d8 | 9029 | GV* gv; |
5458a98a | 9030 | if (keyword(w, s - w, 0)) |
e929a76b | 9031 | return; |
c94115d8 | 9032 | |
2e38bce1 | 9033 | gv = gv_fetchpvn_flags(w, s - w, ( UTF ? SVf_UTF8 : 0 ), SVt_PVCV); |
c94115d8 | 9034 | if (gv && GvCVu(gv)) |
abbb3198 | 9035 | return; |
cea2e8a9 | 9036 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
9037 | } |
9038 | } | |
9039 | } | |
9040 | ||
14ca8ff4 | 9041 | /* Either returns sv, or mortalizes/frees sv and returns a new SV*. |
423cee85 JH |
9042 | Best used as sv=new_constant(..., sv, ...). |
9043 | If s, pv are NULL, calls subroutine with one argument, | |
107160e2 KW |
9044 | and <type> is used with error messages only. |
9045 | <type> is assumed to be well formed UTF-8 */ | |
423cee85 | 9046 | |
b3ac6de7 | 9047 | STATIC SV * |
eb0d8d16 NC |
9048 | S_new_constant(pTHX_ const char *s, STRLEN len, const char *key, STRLEN keylen, |
9049 | SV *sv, SV *pv, const char *type, STRLEN typelen) | |
b3ac6de7 | 9050 | { |
27da23d5 | 9051 | dVAR; dSP; |
fbb93542 | 9052 | HV * table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 9053 | SV *res; |
eed484f9 | 9054 | SV *errsv = NULL; |
b3ac6de7 IZ |
9055 | SV **cvp; |
9056 | SV *cv, *typesv; | |
89e33a05 | 9057 | const char *why1 = "", *why2 = "", *why3 = ""; |
4e553d73 | 9058 | |
7918f24d | 9059 | PERL_ARGS_ASSERT_NEW_CONSTANT; |
f374c70f FC |
9060 | /* We assume that this is true: */ |
9061 | if (*key == 'c') { assert (strEQ(key, "charnames")); } | |
bb4784f0 | 9062 | assert(type || s); |
7918f24d | 9063 | |
f8988b41 | 9064 | /* charnames doesn't work well if there have been errors found */ |
f374c70f | 9065 | if (PL_error_count > 0 && *key == 'c') |
14ca8ff4 FC |
9066 | { |
9067 | SvREFCNT_dec_NN(sv); | |
f8988b41 | 9068 | return &PL_sv_undef; |
14ca8ff4 | 9069 | } |
f8988b41 | 9070 | |
5f7f7af5 | 9071 | sv_2mortal(sv); /* Parent created it permanently */ |
fbb93542 KW |
9072 | if (!table |
9073 | || ! (PL_hints & HINT_LOCALIZE_HH) | |
9074 | || ! (cvp = hv_fetch(table, key, keylen, FALSE)) | |
9075 | || ! SvOK(*cvp)) | |
9076 | { | |
5f7f7af5 | 9077 | char *msg; |
423cee85 | 9078 | |
fbb93542 KW |
9079 | /* Here haven't found what we're looking for. If it is charnames, |
9080 | * perhaps it needs to be loaded. Try doing that before giving up */ | |
f374c70f | 9081 | if (*key == 'c') { |
fbb93542 KW |
9082 | Perl_load_module(aTHX_ |
9083 | 0, | |
9084 | newSVpvs("_charnames"), | |
9085 | /* version parameter; no need to specify it, as if | |
9086 | * we get too early a version, will fail anyway, | |
9087 | * not being able to find '_charnames' */ | |
9088 | NULL, | |
9089 | newSVpvs(":full"), | |
9090 | newSVpvs(":short"), | |
9091 | NULL); | |
9092 | SPAGAIN; | |
9093 | table = GvHV(PL_hintgv); | |
9094 | if (table | |
9095 | && (PL_hints & HINT_LOCALIZE_HH) | |
9096 | && (cvp = hv_fetch(table, key, keylen, FALSE)) | |
9097 | && SvOK(*cvp)) | |
9098 | { | |
9099 | goto now_ok; | |
9100 | } | |
9101 | } | |
9102 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { | |
5f7f7af5 | 9103 | msg = Perl_form(aTHX_ |
bb4784f0 FC |
9104 | "Constant(%.*s) unknown", |
9105 | (int)(type ? typelen : len), | |
9106 | (type ? type: s)); | |
fbb93542 KW |
9107 | } |
9108 | else { | |
3918902d KW |
9109 | why1 = "$^H{"; |
9110 | why2 = key; | |
9111 | why3 = "} is not defined"; | |
9112 | report: | |
f374c70f | 9113 | if (*key == 'c') { |
5f7f7af5 | 9114 | msg = Perl_form(aTHX_ |
bde9e88d KW |
9115 | /* The +3 is for '\N{'; -4 for that, plus '}' */ |
9116 | "Unknown charname '%.*s'", (int)typelen - 4, type + 3 | |
5f7f7af5 | 9117 | ); |
90249f0a KW |
9118 | } |
9119 | else { | |
5f7f7af5 | 9120 | msg = Perl_form(aTHX_ "Constant(%.*s): %s%s%s", |
bb4784f0 FC |
9121 | (int)(type ? typelen : len), |
9122 | (type ? type: s), why1, why2, why3); | |
90249f0a | 9123 | } |
3918902d | 9124 | } |
5f7f7af5 FC |
9125 | yyerror_pv(msg, UTF ? SVf_UTF8 : 0); |
9126 | return SvREFCNT_inc_simple_NN(sv); | |
423cee85 | 9127 | } |
fbb93542 | 9128 | now_ok: |
b3ac6de7 | 9129 | cv = *cvp; |
423cee85 | 9130 | if (!pv && s) |
59cd0e26 | 9131 | pv = newSVpvn_flags(s, len, SVs_TEMP); |
423cee85 | 9132 | if (type && pv) |
59cd0e26 | 9133 | typesv = newSVpvn_flags(type, typelen, SVs_TEMP); |
b3ac6de7 | 9134 | else |
423cee85 | 9135 | typesv = &PL_sv_undef; |
4e553d73 | 9136 | |
e788e7d3 | 9137 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
9138 | ENTER ; |
9139 | SAVETMPS; | |
4e553d73 | 9140 | |
423cee85 | 9141 | PUSHMARK(SP) ; |
a5845cb7 | 9142 | EXTEND(sp, 3); |
423cee85 JH |
9143 | if (pv) |
9144 | PUSHs(pv); | |
b3ac6de7 | 9145 | PUSHs(sv); |
423cee85 JH |
9146 | if (pv) |
9147 | PUSHs(typesv); | |
b3ac6de7 | 9148 | PUTBACK; |
423cee85 | 9149 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 9150 | |
423cee85 | 9151 | SPAGAIN ; |
4e553d73 | 9152 | |
423cee85 | 9153 | /* Check the eval first */ |
eed484f9 | 9154 | if (!PL_in_eval && ((errsv = ERRSV), SvTRUE_NN(errsv))) { |
c06ecf4f DD |
9155 | STRLEN errlen; |
9156 | const char * errstr; | |
eed484f9 DD |
9157 | sv_catpvs(errsv, "Propagated"); |
9158 | errstr = SvPV_const(errsv, errlen); | |
c06ecf4f | 9159 | yyerror_pvn(errstr, errlen, 0); /* Duplicates the message inside eval */ |
e1f15930 | 9160 | (void)POPs; |
ae5c22c1 | 9161 | res = SvREFCNT_inc_simple_NN(sv); |
423cee85 JH |
9162 | } |
9163 | else { | |
9164 | res = POPs; | |
ae5c22c1 | 9165 | SvREFCNT_inc_simple_void_NN(res); |
423cee85 | 9166 | } |
4e553d73 | 9167 | |
423cee85 JH |
9168 | PUTBACK ; |
9169 | FREETMPS ; | |
9170 | LEAVE ; | |
b3ac6de7 | 9171 | POPSTACK; |
4e553d73 | 9172 | |
b3ac6de7 | 9173 | if (!SvOK(res)) { |
423cee85 JH |
9174 | why1 = "Call to &{$^H{"; |
9175 | why2 = key; | |
f0af216f | 9176 | why3 = "}} did not return a defined value"; |
423cee85 | 9177 | sv = res; |
5f7f7af5 | 9178 | (void)sv_2mortal(sv); |
423cee85 | 9179 | goto report; |
9b0e499b | 9180 | } |
423cee85 | 9181 | |
9b0e499b | 9182 | return res; |
b3ac6de7 | 9183 | } |
4e553d73 | 9184 | |
d0a148a6 NC |
9185 | /* Returns a NUL terminated string, with the length of the string written to |
9186 | *slp | |
9187 | */ | |
76e3520e | 9188 | STATIC char * |
5aaab254 | 9189 | S_scan_word(pTHX_ char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 | 9190 | { |
97aff369 | 9191 | dVAR; |
eb578fdb KW |
9192 | char *d = dest; |
9193 | char * const e = d + destlen - 3; /* two-character token, ending NUL */ | |
7918f24d NC |
9194 | |
9195 | PERL_ARGS_ASSERT_SCAN_WORD; | |
9196 | ||
463ee0b2 | 9197 | for (;;) { |
8903cb82 | 9198 | if (d >= e) |
cea2e8a9 | 9199 | Perl_croak(aTHX_ ident_too_long); |
0eb30aeb | 9200 | if (isWORDCHAR(*s) |
15861f94 KW |
9201 | || (!UTF && isALPHANUMERIC_L1(*s))) /* UTF handled below */ |
9202 | { | |
463ee0b2 | 9203 | *d++ = *s++; |
15861f94 | 9204 | } |
c35e046a | 9205 | else if (allow_package && (*s == '\'') && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
9206 | *d++ = ':'; |
9207 | *d++ = ':'; | |
9208 | s++; | |
9209 | } | |
c35e046a | 9210 | else if (allow_package && (s[0] == ':') && (s[1] == ':') && (s[2] != '$')) { |
463ee0b2 LW |
9211 | *d++ = *s++; |
9212 | *d++ = *s++; | |
9213 | } | |
0eb30aeb | 9214 | else if (UTF && UTF8_IS_START(*s) && isWORDCHAR_utf8((U8*)s)) { |
a0ed51b3 | 9215 | char *t = s + UTF8SKIP(s); |
c35e046a | 9216 | size_t len; |
7dbf68d2 | 9217 | while (UTF8_IS_CONTINUED(*t) && _is_utf8_mark((U8*)t)) |
a0ed51b3 | 9218 | t += UTF8SKIP(t); |
c35e046a AL |
9219 | len = t - s; |
9220 | if (d + len > e) | |
cea2e8a9 | 9221 | Perl_croak(aTHX_ ident_too_long); |
c35e046a AL |
9222 | Copy(s, d, len, char); |
9223 | d += len; | |
a0ed51b3 LW |
9224 | s = t; |
9225 | } | |
463ee0b2 LW |
9226 | else { |
9227 | *d = '\0'; | |
9228 | *slp = d - dest; | |
9229 | return s; | |
e929a76b | 9230 | } |
378cc40b LW |
9231 | } |
9232 | } | |
9233 | ||
76e3520e | 9234 | STATIC char * |
5aaab254 | 9235 | S_scan_ident(pTHX_ char *s, const char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b | 9236 | { |
97aff369 | 9237 | dVAR; |
6136c704 | 9238 | char *bracket = NULL; |
748a9306 | 9239 | char funny = *s++; |
eb578fdb KW |
9240 | char *d = dest; |
9241 | char * const e = d + destlen - 3; /* two-character token, ending NUL */ | |
378cc40b | 9242 | |
7918f24d NC |
9243 | PERL_ARGS_ASSERT_SCAN_IDENT; |
9244 | ||
a0d0e21e | 9245 | if (isSPACE(*s)) |
29595ff2 | 9246 | s = PEEKSPACE(s); |
de3bb511 | 9247 | if (isDIGIT(*s)) { |
8903cb82 | 9248 | while (isDIGIT(*s)) { |
9249 | if (d >= e) | |
cea2e8a9 | 9250 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 9251 | *d++ = *s++; |
8903cb82 | 9252 | } |
378cc40b LW |
9253 | } |
9254 | else { | |
463ee0b2 | 9255 | for (;;) { |
8903cb82 | 9256 | if (d >= e) |
cea2e8a9 | 9257 | Perl_croak(aTHX_ ident_too_long); |
0eb30aeb | 9258 | if (isWORDCHAR(*s)) /* UTF handled below */ |
463ee0b2 | 9259 | *d++ = *s++; |
7e2040f0 | 9260 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
9261 | *d++ = ':'; |
9262 | *d++ = ':'; | |
9263 | s++; | |
9264 | } | |
a0d0e21e | 9265 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
9266 | *d++ = *s++; |
9267 | *d++ = *s++; | |
9268 | } | |
0eb30aeb | 9269 | else if (UTF && UTF8_IS_START(*s) && isWORDCHAR_utf8((U8*)s)) { |
a0ed51b3 | 9270 | char *t = s + UTF8SKIP(s); |
7dbf68d2 | 9271 | while (UTF8_IS_CONTINUED(*t) && _is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
9272 | t += UTF8SKIP(t); |
9273 | if (d + (t - s) > e) | |
cea2e8a9 | 9274 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
9275 | Copy(s, d, t - s, char); |
9276 | d += t - s; | |
9277 | s = t; | |
9278 | } | |
463ee0b2 LW |
9279 | else |
9280 | break; | |
9281 | } | |
378cc40b LW |
9282 | } |
9283 | *d = '\0'; | |
9284 | d = dest; | |
79072805 | 9285 | if (*d) { |
3280af22 NIS |
9286 | if (PL_lex_state != LEX_NORMAL) |
9287 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 9288 | return s; |
378cc40b | 9289 | } |
748a9306 | 9290 | if (*s == '$' && s[1] && |
8a2bca12 | 9291 | (isWORDCHAR_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 9292 | { |
4810e5ec | 9293 | return s; |
5cd24f17 | 9294 | } |
79072805 LW |
9295 | if (*s == '{') { |
9296 | bracket = s; | |
9297 | s++; | |
9298 | } | |
204e6232 BF |
9299 | if (s < send) { |
9300 | if (UTF) { | |
9301 | const STRLEN skip = UTF8SKIP(s); | |
9302 | STRLEN i; | |
9303 | d[skip] = '\0'; | |
9304 | for ( i = 0; i < skip; i++ ) | |
9305 | d[i] = *s++; | |
9306 | } | |
9307 | else { | |
9308 | *d = *s++; | |
9309 | d[1] = '\0'; | |
9310 | } | |
9311 | } | |
2b92dfce | 9312 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 9313 | *d = toCTRL(*s); |
9314 | s++; | |
de3bb511 | 9315 | } |
fbdd83da DIM |
9316 | else if (ck_uni && !bracket) |
9317 | check_uni(); | |
79072805 | 9318 | if (bracket) { |
748a9306 | 9319 | if (isSPACE(s[-1])) { |
fa83b5b6 | 9320 | while (s < send) { |
f54cb97a | 9321 | const char ch = *s++; |
bf4acbe4 | 9322 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 9323 | *d = ch; |
9324 | break; | |
9325 | } | |
9326 | } | |
748a9306 | 9327 | } |
7e2040f0 | 9328 | if (isIDFIRST_lazy_if(d,UTF)) { |
204e6232 | 9329 | d += UTF8SKIP(d); |
a0ed51b3 | 9330 | if (UTF) { |
6136c704 | 9331 | char *end = s; |
8a2bca12 | 9332 | while ((end < send && isWORDCHAR_lazy_if(end,UTF)) || *end == ':') { |
6136c704 | 9333 | end += UTF8SKIP(end); |
7dbf68d2 | 9334 | while (end < send && UTF8_IS_CONTINUED(*end) && _is_utf8_mark((U8*)end)) |
6136c704 | 9335 | end += UTF8SKIP(end); |
a0ed51b3 | 9336 | } |
6136c704 AL |
9337 | Copy(s, d, end - s, char); |
9338 | d += end - s; | |
9339 | s = end; | |
a0ed51b3 LW |
9340 | } |
9341 | else { | |
0eb30aeb | 9342 | while ((isWORDCHAR(*s) || *s == ':') && d < e) |
a0ed51b3 | 9343 | *d++ = *s++; |
2b92dfce | 9344 | if (d >= e) |
cea2e8a9 | 9345 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 9346 | } |
79072805 | 9347 | *d = '\0'; |
c35e046a AL |
9348 | while (s < send && SPACE_OR_TAB(*s)) |
9349 | s++; | |
ff68c719 | 9350 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
5458a98a | 9351 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest, 0)) { |
10edeb5d JH |
9352 | const char * const brack = |
9353 | (const char *) | |
9354 | ((*s == '[') ? "[...]" : "{...}"); | |
e850844c | 9355 | /* diag_listed_as: Ambiguous use of %c{%s[...]} resolved to %c%s[...] */ |
9014280d | 9356 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 9357 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
9358 | funny, dest, brack, funny, dest, brack); |
9359 | } | |
79072805 | 9360 | bracket++; |
a0be28da | 9361 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
78cdf107 | 9362 | PL_lex_allbrackets++; |
79072805 LW |
9363 | return s; |
9364 | } | |
4e553d73 NIS |
9365 | } |
9366 | /* Handle extended ${^Foo} variables | |
2b92dfce | 9367 | * 1999-02-27 mjd-perl-patch@plover.com */ |
0eb30aeb KW |
9368 | else if (!isWORDCHAR(*d) && !isPRINT(*d) /* isCTRL(d) */ |
9369 | && isWORDCHAR(*s)) | |
2b92dfce GS |
9370 | { |
9371 | d++; | |
0eb30aeb | 9372 | while (isWORDCHAR(*s) && d < e) { |
2b92dfce GS |
9373 | *d++ = *s++; |
9374 | } | |
9375 | if (d >= e) | |
cea2e8a9 | 9376 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 9377 | *d = '\0'; |
79072805 LW |
9378 | } |
9379 | if (*s == '}') { | |
9380 | s++; | |
7df0d042 | 9381 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 9382 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
9383 | PL_expect = XREF; |
9384 | } | |
d008e5eb | 9385 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 9386 | if (ckWARN(WARN_AMBIGUOUS) && |
780a5241 | 9387 | (keyword(dest, d - dest, 0) |
5c66c3dd | 9388 | || get_cvn_flags(dest, d - dest, UTF ? SVf_UTF8 : 0))) |
d008e5eb | 9389 | { |
5c66c3dd BF |
9390 | SV *tmp = newSVpvn_flags( dest, d - dest, |
9391 | SVs_TEMP | (UTF ? SVf_UTF8 : 0) ); | |
c35e046a AL |
9392 | if (funny == '#') |
9393 | funny = '@'; | |
9014280d | 9394 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
5c66c3dd BF |
9395 | "Ambiguous use of %c{%"SVf"} resolved to %c%"SVf, |
9396 | funny, tmp, funny, tmp); | |
d008e5eb GS |
9397 | } |
9398 | } | |
79072805 LW |
9399 | } |
9400 | else { | |
9401 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 9402 | *dest = '\0'; |
79072805 LW |
9403 | } |
9404 | } | |
3280af22 NIS |
9405 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
9406 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
9407 | return s; |
9408 | } | |
9409 | ||
858a358b | 9410 | static bool |
3955e1a9 | 9411 | S_pmflag(pTHX_ const char* const valid_flags, U32 * pmfl, char** s, char* charset) { |
858a358b KW |
9412 | |
9413 | /* Adds, subtracts to/from 'pmfl' based on regex modifier flags found in | |
9414 | * the parse starting at 's', based on the subset that are valid in this | |
9415 | * context input to this routine in 'valid_flags'. Advances s. Returns | |
96f3bfda KW |
9416 | * TRUE if the input should be treated as a valid flag, so the next char |
9417 | * may be as well; otherwise FALSE. 'charset' should point to a NUL upon | |
9418 | * first call on the current regex. This routine will set it to any | |
9419 | * charset modifier found. The caller shouldn't change it. This way, | |
9420 | * another charset modifier encountered in the parse can be detected as an | |
9421 | * error, as we have decided to allow only one */ | |
858a358b KW |
9422 | |
9423 | const char c = **s; | |
84159251 | 9424 | STRLEN charlen = UTF ? UTF8SKIP(*s) : 1; |
94b03d7d | 9425 | |
84159251 | 9426 | if ( charlen != 1 || ! strchr(valid_flags, c) ) { |
8a2bca12 | 9427 | if (isWORDCHAR_lazy_if(*s, UTF)) { |
4f8dbb2d | 9428 | yyerror_pv(Perl_form(aTHX_ "Unknown regexp modifier \"/%.*s\"", (int)charlen, *s), |
84159251 BF |
9429 | UTF ? SVf_UTF8 : 0); |
9430 | (*s) += charlen; | |
96f3bfda KW |
9431 | /* Pretend that it worked, so will continue processing before |
9432 | * dieing */ | |
0da72d5e | 9433 | return TRUE; |
858a358b KW |
9434 | } |
9435 | return FALSE; | |
9436 | } | |
9437 | ||
9438 | switch (c) { | |
94b03d7d | 9439 | |
858a358b KW |
9440 | CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl); |
9441 | case GLOBAL_PAT_MOD: *pmfl |= PMf_GLOBAL; break; | |
9442 | case CONTINUE_PAT_MOD: *pmfl |= PMf_CONTINUE; break; | |
9443 | case ONCE_PAT_MOD: *pmfl |= PMf_KEEP; break; | |
9444 | case KEEPCOPY_PAT_MOD: *pmfl |= RXf_PMf_KEEPCOPY; break; | |
9445 | case NONDESTRUCT_PAT_MOD: *pmfl |= PMf_NONDESTRUCT; break; | |
94b03d7d | 9446 | case LOCALE_PAT_MOD: |
3955e1a9 KW |
9447 | if (*charset) { |
9448 | goto multiple_charsets; | |
9449 | } | |
94b03d7d | 9450 | set_regex_charset(pmfl, REGEX_LOCALE_CHARSET); |
3955e1a9 | 9451 | *charset = c; |
94b03d7d KW |
9452 | break; |
9453 | case UNICODE_PAT_MOD: | |
3955e1a9 KW |
9454 | if (*charset) { |
9455 | goto multiple_charsets; | |
9456 | } | |
94b03d7d | 9457 | set_regex_charset(pmfl, REGEX_UNICODE_CHARSET); |
3955e1a9 | 9458 | *charset = c; |
94b03d7d KW |
9459 | break; |
9460 | case ASCII_RESTRICT_PAT_MOD: | |
ff3f26d2 | 9461 | if (! *charset) { |
94b03d7d KW |
9462 | set_regex_charset(pmfl, REGEX_ASCII_RESTRICTED_CHARSET); |
9463 | } | |
ff3f26d2 KW |
9464 | else { |
9465 | ||
9466 | /* Error if previous modifier wasn't an 'a', but if it was, see | |
9467 | * if, and accept, a second occurrence (only) */ | |
9468 | if (*charset != 'a' | |
9469 | || get_regex_charset(*pmfl) | |
9470 | != REGEX_ASCII_RESTRICTED_CHARSET) | |
9471 | { | |
9472 | goto multiple_charsets; | |
9473 | } | |
9474 | set_regex_charset(pmfl, REGEX_ASCII_MORE_RESTRICTED_CHARSET); | |
3955e1a9 KW |
9475 | } |
9476 | *charset = c; | |
94b03d7d KW |
9477 | break; |
9478 | case DEPENDS_PAT_MOD: | |
3955e1a9 KW |
9479 | if (*charset) { |
9480 | goto multiple_charsets; | |
9481 | } | |
94b03d7d | 9482 | set_regex_charset(pmfl, REGEX_DEPENDS_CHARSET); |
3955e1a9 | 9483 | *charset = c; |
94b03d7d | 9484 | break; |
879d0c72 | 9485 | } |
94b03d7d | 9486 | |
858a358b KW |
9487 | (*s)++; |
9488 | return TRUE; | |
94b03d7d | 9489 | |
3955e1a9 KW |
9490 | multiple_charsets: |
9491 | if (*charset != c) { | |
9492 | yyerror(Perl_form(aTHX_ "Regexp modifiers \"/%c\" and \"/%c\" are mutually exclusive", *charset, c)); | |
9493 | } | |
ff3f26d2 KW |
9494 | else if (c == 'a') { |
9495 | yyerror("Regexp modifier \"/a\" may appear a maximum of twice"); | |
9496 | } | |
3955e1a9 KW |
9497 | else { |
9498 | yyerror(Perl_form(aTHX_ "Regexp modifier \"/%c\" may not appear twice", c)); | |
9499 | } | |
9500 | ||
9501 | /* Pretend that it worked, so will continue processing before dieing */ | |
9502 | (*s)++; | |
9503 | return TRUE; | |
879d0c72 NC |
9504 | } |
9505 | ||
76e3520e | 9506 | STATIC char * |
cea2e8a9 | 9507 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 9508 | { |
97aff369 | 9509 | dVAR; |
79072805 | 9510 | PMOP *pm; |
4d68ffa0 KW |
9511 | char *s = scan_str(start,!!PL_madskills,FALSE, PL_reg_state.re_reparsing, |
9512 | TRUE /* look for escaped bracketed metas */ ); | |
10edeb5d | 9513 | const char * const valid_flags = |
a20207d7 | 9514 | (const char *)((type == OP_QR) ? QR_PAT_MODS : M_PAT_MODS); |
3955e1a9 | 9515 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
9516 | #ifdef PERL_MAD |
9517 | char *modstart; | |
9518 | #endif | |
9519 | ||
7918f24d | 9520 | PERL_ARGS_ASSERT_SCAN_PAT; |
378cc40b | 9521 | |
d24ca0c5 DM |
9522 | /* this was only needed for the initial scan_str; set it to false |
9523 | * so that any (?{}) code blocks etc are parsed normally */ | |
9524 | PL_reg_state.re_reparsing = FALSE; | |
25c09cbf | 9525 | if (!s) { |
6136c704 | 9526 | const char * const delimiter = skipspace(start); |
10edeb5d JH |
9527 | Perl_croak(aTHX_ |
9528 | (const char *) | |
9529 | (*delimiter == '?' | |
9530 | ? "Search pattern not terminated or ternary operator parsed as search pattern" | |
9531 | : "Search pattern not terminated" )); | |
25c09cbf | 9532 | } |
bbce6d69 | 9533 | |
8782bef2 | 9534 | pm = (PMOP*)newPMOP(type, 0); |
ad639bfb NC |
9535 | if (PL_multi_open == '?') { |
9536 | /* This is the only point in the code that sets PMf_ONCE: */ | |
79072805 | 9537 | pm->op_pmflags |= PMf_ONCE; |
ad639bfb NC |
9538 | |
9539 | /* Hence it's safe to do this bit of PMOP book-keeping here, which | |
9540 | allows us to restrict the list needed by reset to just the ?? | |
9541 | matches. */ | |
9542 | assert(type != OP_TRANS); | |
9543 | if (PL_curstash) { | |
daba3364 | 9544 | MAGIC *mg = mg_find((const SV *)PL_curstash, PERL_MAGIC_symtab); |
ad639bfb NC |
9545 | U32 elements; |
9546 | if (!mg) { | |
daba3364 | 9547 | mg = sv_magicext(MUTABLE_SV(PL_curstash), 0, PERL_MAGIC_symtab, 0, 0, |
ad639bfb NC |
9548 | 0); |
9549 | } | |
9550 | elements = mg->mg_len / sizeof(PMOP**); | |
9551 | Renewc(mg->mg_ptr, elements + 1, PMOP*, char); | |
9552 | ((PMOP**)mg->mg_ptr) [elements++] = pm; | |
9553 | mg->mg_len = elements * sizeof(PMOP**); | |
9554 | PmopSTASH_set(pm,PL_curstash); | |
9555 | } | |
9556 | } | |
5db06880 NC |
9557 | #ifdef PERL_MAD |
9558 | modstart = s; | |
9559 | #endif | |
d63c20f2 DM |
9560 | |
9561 | /* if qr/...(?{..}).../, then need to parse the pattern within a new | |
9562 | * anon CV. False positives like qr/[(?{]/ are harmless */ | |
9563 | ||
9564 | if (type == OP_QR) { | |
6f635923 DM |
9565 | STRLEN len; |
9566 | char *e, *p = SvPV(PL_lex_stuff, len); | |
9567 | e = p + len; | |
9568 | for (; p < e; p++) { | |
d63c20f2 DM |
9569 | if (p[0] == '(' && p[1] == '?' |
9570 | && (p[2] == '{' || (p[2] == '?' && p[3] == '{'))) | |
9571 | { | |
9572 | pm->op_pmflags |= PMf_HAS_CV; | |
9573 | break; | |
9574 | } | |
9575 | } | |
6f635923 | 9576 | pm->op_pmflags |= PMf_IS_QR; |
d63c20f2 DM |
9577 | } |
9578 | ||
3955e1a9 | 9579 | while (*s && S_pmflag(aTHX_ valid_flags, &(pm->op_pmflags), &s, &charset)) {}; |
5db06880 NC |
9580 | #ifdef PERL_MAD |
9581 | if (PL_madskills && modstart != s) { | |
9582 | SV* tmptoken = newSVpvn(modstart, s - modstart); | |
9583 | append_madprops(newMADPROP('m', MAD_SV, tmptoken, 0), (OP*)pm, 0); | |
9584 | } | |
9585 | #endif | |
4ac733c9 | 9586 | /* issue a warning if /c is specified,but /g is not */ |
a2a5de95 | 9587 | if ((pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) |
4ac733c9 | 9588 | { |
a2a5de95 NC |
9589 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), |
9590 | "Use of /c modifier is meaningless without /g" ); | |
4ac733c9 MJD |
9591 | } |
9592 | ||
3280af22 | 9593 | PL_lex_op = (OP*)pm; |
6154021b | 9594 | pl_yylval.ival = OP_MATCH; |
378cc40b LW |
9595 | return s; |
9596 | } | |
9597 | ||
76e3520e | 9598 | STATIC char * |
cea2e8a9 | 9599 | S_scan_subst(pTHX_ char *start) |
79072805 | 9600 | { |
27da23d5 | 9601 | dVAR; |
22594288 | 9602 | char *s; |
eb578fdb | 9603 | PMOP *pm; |
4fdae800 | 9604 | I32 first_start; |
79072805 | 9605 | I32 es = 0; |
3955e1a9 | 9606 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
9607 | #ifdef PERL_MAD |
9608 | char *modstart; | |
9609 | #endif | |
79072805 | 9610 | |
7918f24d NC |
9611 | PERL_ARGS_ASSERT_SCAN_SUBST; |
9612 | ||
6154021b | 9613 | pl_yylval.ival = OP_NULL; |
79072805 | 9614 | |
4d68ffa0 KW |
9615 | s = scan_str(start,!!PL_madskills,FALSE,FALSE, |
9616 | TRUE /* look for escaped bracketed metas */ ); | |
79072805 | 9617 | |
37fd879b | 9618 | if (!s) |
cea2e8a9 | 9619 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 9620 | |
3280af22 | 9621 | if (s[-1] == PL_multi_open) |
79072805 | 9622 | s--; |
5db06880 NC |
9623 | #ifdef PERL_MAD |
9624 | if (PL_madskills) { | |
cd81e915 NC |
9625 | CURMAD('q', PL_thisopen); |
9626 | CURMAD('_', PL_thiswhite); | |
9627 | CURMAD('E', PL_thisstuff); | |
9628 | CURMAD('Q', PL_thisclose); | |
9629 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9630 | } |
9631 | #endif | |
79072805 | 9632 | |
3280af22 | 9633 | first_start = PL_multi_start; |
4d68ffa0 | 9634 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 9635 | if (!s) { |
37fd879b | 9636 | if (PL_lex_stuff) { |
3280af22 | 9637 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9638 | PL_lex_stuff = NULL; |
37fd879b | 9639 | } |
cea2e8a9 | 9640 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 9641 | } |
3280af22 | 9642 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 9643 | |
79072805 | 9644 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
5db06880 NC |
9645 | |
9646 | #ifdef PERL_MAD | |
9647 | if (PL_madskills) { | |
cd81e915 NC |
9648 | CURMAD('z', PL_thisopen); |
9649 | CURMAD('R', PL_thisstuff); | |
9650 | CURMAD('Z', PL_thisclose); | |
5db06880 NC |
9651 | } |
9652 | modstart = s; | |
9653 | #endif | |
9654 | ||
48c036b1 | 9655 | while (*s) { |
a20207d7 | 9656 | if (*s == EXEC_PAT_MOD) { |
a687059c | 9657 | s++; |
2f3197b3 | 9658 | es++; |
a687059c | 9659 | } |
3955e1a9 KW |
9660 | else if (! S_pmflag(aTHX_ S_PAT_MODS, &(pm->op_pmflags), &s, &charset)) |
9661 | { | |
48c036b1 | 9662 | break; |
aa78b661 | 9663 | } |
378cc40b | 9664 | } |
79072805 | 9665 | |
5db06880 NC |
9666 | #ifdef PERL_MAD |
9667 | if (PL_madskills) { | |
9668 | if (modstart != s) | |
9669 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9670 | append_madprops(PL_thismad, (OP*)pm, 0); |
9671 | PL_thismad = 0; | |
5db06880 NC |
9672 | } |
9673 | #endif | |
a2a5de95 NC |
9674 | if ((pm->op_pmflags & PMf_CONTINUE)) { |
9675 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), "Use of /c modifier is meaningless in s///" ); | |
4ac733c9 MJD |
9676 | } |
9677 | ||
79072805 | 9678 | if (es) { |
6136c704 AL |
9679 | SV * const repl = newSVpvs(""); |
9680 | ||
0244c3a4 | 9681 | PL_multi_end = 0; |
79072805 | 9682 | pm->op_pmflags |= PMf_EVAL; |
a5849ce5 NC |
9683 | while (es-- > 0) { |
9684 | if (es) | |
9685 | sv_catpvs(repl, "eval "); | |
9686 | else | |
9687 | sv_catpvs(repl, "do "); | |
9688 | } | |
6f43d98f | 9689 | sv_catpvs(repl, "{"); |
7cc34111 | 9690 | sv_catsv(repl, PL_sublex_info.repl); |
9badc361 | 9691 | sv_catpvs(repl, "}"); |
25da4f38 | 9692 | SvEVALED_on(repl); |
7cc34111 FC |
9693 | SvREFCNT_dec(PL_sublex_info.repl); |
9694 | PL_sublex_info.repl = repl; | |
378cc40b | 9695 | } |
79072805 | 9696 | |
3280af22 | 9697 | PL_lex_op = (OP*)pm; |
6154021b | 9698 | pl_yylval.ival = OP_SUBST; |
378cc40b LW |
9699 | return s; |
9700 | } | |
9701 | ||
76e3520e | 9702 | STATIC char * |
cea2e8a9 | 9703 | S_scan_trans(pTHX_ char *start) |
378cc40b | 9704 | { |
97aff369 | 9705 | dVAR; |
eb578fdb | 9706 | char* s; |
11343788 | 9707 | OP *o; |
b84c11c8 NC |
9708 | U8 squash; |
9709 | U8 del; | |
9710 | U8 complement; | |
bb16bae8 | 9711 | bool nondestruct = 0; |
5db06880 NC |
9712 | #ifdef PERL_MAD |
9713 | char *modstart; | |
9714 | #endif | |
79072805 | 9715 | |
7918f24d NC |
9716 | PERL_ARGS_ASSERT_SCAN_TRANS; |
9717 | ||
6154021b | 9718 | pl_yylval.ival = OP_NULL; |
79072805 | 9719 | |
4d68ffa0 | 9720 | s = scan_str(start,!!PL_madskills,FALSE,FALSE, FALSE); |
37fd879b | 9721 | if (!s) |
cea2e8a9 | 9722 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
5db06880 | 9723 | |
3280af22 | 9724 | if (s[-1] == PL_multi_open) |
2f3197b3 | 9725 | s--; |
5db06880 NC |
9726 | #ifdef PERL_MAD |
9727 | if (PL_madskills) { | |
cd81e915 NC |
9728 | CURMAD('q', PL_thisopen); |
9729 | CURMAD('_', PL_thiswhite); | |
9730 | CURMAD('E', PL_thisstuff); | |
9731 | CURMAD('Q', PL_thisclose); | |
9732 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9733 | } |
9734 | #endif | |
2f3197b3 | 9735 | |
4d68ffa0 | 9736 | s = scan_str(s,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 9737 | if (!s) { |
37fd879b | 9738 | if (PL_lex_stuff) { |
3280af22 | 9739 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9740 | PL_lex_stuff = NULL; |
37fd879b | 9741 | } |
cea2e8a9 | 9742 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 9743 | } |
5db06880 | 9744 | if (PL_madskills) { |
cd81e915 NC |
9745 | CURMAD('z', PL_thisopen); |
9746 | CURMAD('R', PL_thisstuff); | |
9747 | CURMAD('Z', PL_thisclose); | |
5db06880 | 9748 | } |
79072805 | 9749 | |
a0ed51b3 | 9750 | complement = del = squash = 0; |
5db06880 NC |
9751 | #ifdef PERL_MAD |
9752 | modstart = s; | |
9753 | #endif | |
7a1e2023 NC |
9754 | while (1) { |
9755 | switch (*s) { | |
9756 | case 'c': | |
79072805 | 9757 | complement = OPpTRANS_COMPLEMENT; |
7a1e2023 NC |
9758 | break; |
9759 | case 'd': | |
a0ed51b3 | 9760 | del = OPpTRANS_DELETE; |
7a1e2023 NC |
9761 | break; |
9762 | case 's': | |
79072805 | 9763 | squash = OPpTRANS_SQUASH; |
7a1e2023 | 9764 | break; |
bb16bae8 FC |
9765 | case 'r': |
9766 | nondestruct = 1; | |
9767 | break; | |
7a1e2023 NC |
9768 | default: |
9769 | goto no_more; | |
9770 | } | |
395c3793 LW |
9771 | s++; |
9772 | } | |
7a1e2023 | 9773 | no_more: |
8973db79 | 9774 | |
9100eeb1 | 9775 | o = newPVOP(nondestruct ? OP_TRANSR : OP_TRANS, 0, (char*)NULL); |
59f00321 RGS |
9776 | o->op_private &= ~OPpTRANS_ALL; |
9777 | o->op_private |= del|squash|complement| | |
7948272d | 9778 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
7cc34111 | 9779 | (DO_UTF8(PL_sublex_info.repl) ? OPpTRANS_TO_UTF : 0); |
79072805 | 9780 | |
3280af22 | 9781 | PL_lex_op = o; |
bb16bae8 | 9782 | pl_yylval.ival = nondestruct ? OP_TRANSR : OP_TRANS; |
5db06880 NC |
9783 | |
9784 | #ifdef PERL_MAD | |
9785 | if (PL_madskills) { | |
9786 | if (modstart != s) | |
9787 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9788 | append_madprops(PL_thismad, o, 0); |
9789 | PL_thismad = 0; | |
5db06880 NC |
9790 | } |
9791 | #endif | |
9792 | ||
79072805 LW |
9793 | return s; |
9794 | } | |
9795 | ||
5097bf9b FC |
9796 | /* scan_heredoc |
9797 | Takes a pointer to the first < in <<FOO. | |
9798 | Returns a pointer to the byte following <<FOO. | |
9799 | ||
9800 | This function scans a heredoc, which involves different methods | |
9801 | depending on whether we are in a string eval, quoted construct, etc. | |
9802 | This is because PL_linestr could containing a single line of input, or | |
9803 | a whole string being evalled, or the contents of the current quote- | |
9804 | like operator. | |
9805 | ||
19bbc0d7 FC |
9806 | The two basic methods are: |
9807 | - Steal lines from the input stream | |
9808 | - Scan the heredoc in PL_linestr and remove it therefrom | |
9809 | ||
9810 | In a file scope or filtered eval, the first method is used; in a | |
9811 | string eval, the second. | |
9812 | ||
9813 | In a quote-like operator, we have to choose between the two, | |
9814 | depending on where we can find a newline. We peek into outer lex- | |
9815 | ing scopes until we find one with a newline in it. If we reach the | |
9816 | outermost lexing scope and it is a file, we use the stream method. | |
9817 | Otherwise it is treated as an eval. | |
5097bf9b FC |
9818 | */ |
9819 | ||
76e3520e | 9820 | STATIC char * |
5aaab254 | 9821 | S_scan_heredoc(pTHX_ char *s) |
79072805 | 9822 | { |
97aff369 | 9823 | dVAR; |
79072805 LW |
9824 | I32 op_type = OP_SCALAR; |
9825 | I32 len; | |
9826 | SV *tmpstr; | |
9827 | char term; | |
eb578fdb KW |
9828 | char *d; |
9829 | char *e; | |
4633a7c4 | 9830 | char *peek; |
5097bf9b | 9831 | const bool infile = PL_rsfp || PL_parser->filtered; |
78a635de | 9832 | LEXSHARED *shared = PL_parser->lex_shared; |
5db06880 NC |
9833 | #ifdef PERL_MAD |
9834 | I32 stuffstart = s - SvPVX(PL_linestr); | |
9835 | char *tstart; | |
9836 | ||
cd81e915 | 9837 | PL_realtokenstart = -1; |
5db06880 | 9838 | #endif |
79072805 | 9839 | |
7918f24d NC |
9840 | PERL_ARGS_ASSERT_SCAN_HEREDOC; |
9841 | ||
79072805 | 9842 | s += 2; |
5097bf9b | 9843 | d = PL_tokenbuf + 1; |
3280af22 | 9844 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; |
5097bf9b | 9845 | *PL_tokenbuf = '\n'; |
c35e046a AL |
9846 | peek = s; |
9847 | while (SPACE_OR_TAB(*peek)) | |
9848 | peek++; | |
3792a11b | 9849 | if (*peek == '`' || *peek == '\'' || *peek =='"') { |
4633a7c4 | 9850 | s = peek; |
79072805 | 9851 | term = *s++; |
3280af22 | 9852 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
6f2d7fc9 FC |
9853 | if (s == PL_bufend) |
9854 | Perl_croak(aTHX_ "Unterminated delimiter for here document"); | |
fc36a67e | 9855 | d += len; |
6f2d7fc9 | 9856 | s++; |
79072805 LW |
9857 | } |
9858 | else { | |
9859 | if (*s == '\\') | |
458391bd | 9860 | /* <<\FOO is equivalent to <<'FOO' */ |
79072805 LW |
9861 | s++, term = '\''; |
9862 | else | |
9863 | term = '"'; | |
8a2bca12 | 9864 | if (!isWORDCHAR_lazy_if(s,UTF)) |
8ab8f082 | 9865 | deprecate("bare << to mean <<\"\""); |
8a2bca12 | 9866 | for (; isWORDCHAR_lazy_if(s,UTF); s++) { |
fc36a67e | 9867 | if (d < e) |
9868 | *d++ = *s; | |
9869 | } | |
9870 | } | |
3280af22 | 9871 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 9872 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
9873 | *d++ = '\n'; |
9874 | *d = '\0'; | |
3280af22 | 9875 | len = d - PL_tokenbuf; |
5db06880 NC |
9876 | |
9877 | #ifdef PERL_MAD | |
9878 | if (PL_madskills) { | |
5097bf9b FC |
9879 | tstart = PL_tokenbuf + 1; |
9880 | PL_thisclose = newSVpvn(tstart, len - 1); | |
5db06880 | 9881 | tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 | 9882 | PL_thisopen = newSVpvn(tstart, s - tstart); |
5db06880 NC |
9883 | stuffstart = s - SvPVX(PL_linestr); |
9884 | } | |
9885 | #endif | |
6a27c188 | 9886 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
9887 | d = strchr(s, '\r'); |
9888 | if (d) { | |
b464bac0 | 9889 | char * const olds = s; |
f63a84b2 | 9890 | s = d; |
3280af22 | 9891 | while (s < PL_bufend) { |
f63a84b2 LW |
9892 | if (*s == '\r') { |
9893 | *d++ = '\n'; | |
9894 | if (*++s == '\n') | |
9895 | s++; | |
9896 | } | |
9897 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
9898 | *d++ = *s++; | |
9899 | s++; | |
9900 | } | |
9901 | else | |
9902 | *d++ = *s++; | |
9903 | } | |
9904 | *d = '\0'; | |
3280af22 | 9905 | PL_bufend = d; |
95a20fc0 | 9906 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 LW |
9907 | s = olds; |
9908 | } | |
9909 | #endif | |
5db06880 NC |
9910 | #ifdef PERL_MAD |
9911 | if (PL_madskills) { | |
9912 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9913 | if (PL_thisstuff) |
9914 | sv_catpvn(PL_thisstuff, tstart, s - tstart); | |
5db06880 | 9915 | else |
cd81e915 | 9916 | PL_thisstuff = newSVpvn(tstart, s - tstart); |
5db06880 | 9917 | } |
748a9306 | 9918 | |
5db06880 | 9919 | stuffstart = s - SvPVX(PL_linestr); |
5db06880 NC |
9920 | #endif |
9921 | ||
7d0a29fe NC |
9922 | tmpstr = newSV_type(SVt_PVIV); |
9923 | SvGROW(tmpstr, 80); | |
748a9306 | 9924 | if (term == '\'') { |
79072805 | 9925 | op_type = OP_CONST; |
45977657 | 9926 | SvIV_set(tmpstr, -1); |
748a9306 LW |
9927 | } |
9928 | else if (term == '`') { | |
79072805 | 9929 | op_type = OP_BACKTICK; |
45977657 | 9930 | SvIV_set(tmpstr, '\\'); |
748a9306 | 9931 | } |
79072805 | 9932 | |
78a635de | 9933 | PL_multi_start = CopLINE(PL_curcop) + 1; |
3280af22 | 9934 | PL_multi_open = PL_multi_close = '<'; |
19bbc0d7 | 9935 | /* inside a string eval or quote-like operator */ |
4efe39d2 | 9936 | if (!infile || PL_lex_inwhat) { |
60f40a38 | 9937 | SV *linestr; |
3526bd3e | 9938 | char *bufend; |
074b1c59 | 9939 | char * const olds = s; |
d37427bc | 9940 | PERL_CONTEXT * const cx = &cxstack[cxstack_ix]; |
19bbc0d7 FC |
9941 | /* These two fields are not set until an inner lexing scope is |
9942 | entered. But we need them set here. */ | |
4efe39d2 FC |
9943 | shared->ls_bufptr = s; |
9944 | shared->ls_linestr = PL_linestr; | |
9945 | if (PL_lex_inwhat) | |
9946 | /* Look for a newline. If the current buffer does not have one, | |
9947 | peek into the line buffer of the parent lexing scope, going | |
9948 | up as many levels as necessary to find one with a newline | |
9949 | after bufptr. | |
9950 | */ | |
9951 | while (!(s = (char *)memchr( | |
9952 | (void *)shared->ls_bufptr, '\n', | |
9953 | SvEND(shared->ls_linestr)-shared->ls_bufptr | |
9954 | ))) { | |
60f40a38 | 9955 | shared = shared->ls_prev; |
f68f7dc1 FC |
9956 | /* shared is only null if we have gone beyond the outermost |
9957 | lexing scope. In a file, we will have broken out of the | |
9958 | loop in the previous iteration. In an eval, the string buf- | |
9959 | fer ends with "\n;", so the while condition below will have | |
9960 | evaluated to false. So shared can never be null. */ | |
9961 | assert(shared); | |
60f40a38 FC |
9962 | /* A LEXSHARED struct with a null ls_prev pointer is the outer- |
9963 | most lexing scope. In a file, shared->ls_linestr at that | |
9964 | level is just one line, so there is no body to steal. */ | |
9965 | if (infile && !shared->ls_prev) { | |
074b1c59 | 9966 | s = olds; |
99bd9d90 FC |
9967 | goto streaming; |
9968 | } | |
4efe39d2 FC |
9969 | } |
9970 | else { /* eval */ | |
9971 | s = (char*)memchr((void*)s, '\n', PL_bufend - s); | |
9972 | assert(s); | |
9973 | } | |
60f40a38 FC |
9974 | linestr = shared->ls_linestr; |
9975 | bufend = SvEND(linestr); | |
0244c3a4 GS |
9976 | d = s; |
9977 | while (s < bufend && | |
5bd13da3 | 9978 | (*s != '\n' || memNE(s,PL_tokenbuf,len)) ) { |
0244c3a4 | 9979 | if (*s++ == '\n') |
78a635de | 9980 | ++shared->herelines; |
0244c3a4 GS |
9981 | } |
9982 | if (s >= bufend) { | |
932d0cf1 | 9983 | goto interminable; |
0244c3a4 | 9984 | } |
3328ab5a | 9985 | sv_setpvn(tmpstr,d+1,s-d); |
5db06880 NC |
9986 | #ifdef PERL_MAD |
9987 | if (PL_madskills) { | |
cd81e915 NC |
9988 | if (PL_thisstuff) |
9989 | sv_catpvn(PL_thisstuff, d + 1, s - d); | |
5db06880 | 9990 | else |
cd81e915 | 9991 | PL_thisstuff = newSVpvn(d + 1, s - d); |
5db06880 NC |
9992 | stuffstart = s - SvPVX(PL_linestr); |
9993 | } | |
9994 | #endif | |
79072805 | 9995 | s += len - 1; |
d794b522 | 9996 | /* the preceding stmt passes a newline */ |
78a635de | 9997 | shared->herelines++; |
49d8d3a1 | 9998 | |
db444266 FC |
9999 | /* s now points to the newline after the heredoc terminator. |
10000 | d points to the newline before the body of the heredoc. | |
10001 | */ | |
19bbc0d7 FC |
10002 | |
10003 | /* We are going to modify linestr in place here, so set | |
10004 | aside copies of the string if necessary for re-evals or | |
10005 | (caller $n)[6]. */ | |
a91428a4 | 10006 | /* See the Paranoia note in case LEX_INTERPEND in yylex, for why we |
3328ab5a FC |
10007 | check shared->re_eval_str. */ |
10008 | if (shared->re_eval_start || shared->re_eval_str) { | |
db444266 | 10009 | /* Set aside the rest of the regexp */ |
3328ab5a FC |
10010 | if (!shared->re_eval_str) |
10011 | shared->re_eval_str = | |
10012 | newSVpvn(shared->re_eval_start, | |
4efe39d2 | 10013 | bufend - shared->re_eval_start); |
3328ab5a | 10014 | shared->re_eval_start -= s-d; |
db444266 | 10015 | } |
d4fe4ada RU |
10016 | if (cxstack_ix >= 0 && CxTYPE(cx) == CXt_EVAL && |
10017 | CxOLD_OP_TYPE(cx) == OP_ENTEREVAL && | |
10018 | cx->blk_eval.cur_text == linestr) | |
10019 | { | |
4efe39d2 | 10020 | cx->blk_eval.cur_text = newSVsv(linestr); |
d37427bc FC |
10021 | SvSCREAM_on(cx->blk_eval.cur_text); |
10022 | } | |
db444266 | 10023 | /* Copy everything from s onwards back to d. */ |
4efe39d2 FC |
10024 | Move(s,d,bufend-s + 1,char); |
10025 | SvCUR_set(linestr, SvCUR(linestr) - (s-d)); | |
19bbc0d7 FC |
10026 | /* Setting PL_bufend only applies when we have not dug deeper |
10027 | into other scopes, because sublex_done sets PL_bufend to | |
10028 | SvEND(PL_linestr). */ | |
4efe39d2 | 10029 | if (shared == PL_parser->lex_shared) PL_bufend = SvEND(linestr); |
db444266 | 10030 | s = olds; |
79072805 LW |
10031 | } |
10032 | else | |
a7922135 | 10033 | { |
3328ab5a | 10034 | SV *linestr_save; |
a7922135 FC |
10035 | streaming: |
10036 | sv_setpvs(tmpstr,""); /* avoid "uninitialized" warning */ | |
10037 | term = PL_tokenbuf[1]; | |
10038 | len--; | |
3328ab5a | 10039 | linestr_save = PL_linestr; /* must restore this afterwards */ |
074b1c59 | 10040 | d = s; /* and this */ |
3328ab5a | 10041 | PL_linestr = newSVpvs(""); |
074b1c59 FC |
10042 | PL_bufend = SvPVX(PL_linestr); |
10043 | while (1) { | |
5db06880 NC |
10044 | #ifdef PERL_MAD |
10045 | if (PL_madskills) { | |
10046 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
10047 | if (PL_thisstuff) |
10048 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 10049 | else |
cd81e915 | 10050 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
10051 | } |
10052 | #endif | |
074b1c59 | 10053 | PL_bufptr = PL_bufend; |
d794b522 | 10054 | CopLINE_set(PL_curcop, |
78a635de | 10055 | PL_multi_start + shared->herelines); |
112d1284 FC |
10056 | if (!lex_next_chunk(LEX_NO_TERM) |
10057 | && (!SvCUR(tmpstr) || SvEND(tmpstr)[-1] != '\n')) { | |
3328ab5a | 10058 | SvREFCNT_dec(linestr_save); |
932d0cf1 | 10059 | goto interminable; |
79072805 | 10060 | } |
78a635de | 10061 | CopLINE_set(PL_curcop, (line_t)PL_multi_start - 1); |
112d1284 FC |
10062 | if (!SvCUR(PL_linestr) || PL_bufend[-1] != '\n') { |
10063 | lex_grow_linestr(SvCUR(PL_linestr) + 2); | |
10064 | sv_catpvs(PL_linestr, "\n\0"); | |
10065 | } | |
f0e67a1d | 10066 | s = PL_bufptr; |
5db06880 NC |
10067 | #ifdef PERL_MAD |
10068 | stuffstart = s - SvPVX(PL_linestr); | |
10069 | #endif | |
78a635de | 10070 | shared->herelines++; |
bd61b366 | 10071 | PL_last_lop = PL_last_uni = NULL; |
6a27c188 | 10072 | #ifndef PERL_STRICT_CR |
3280af22 | 10073 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
10074 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
10075 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 10076 | { |
3280af22 NIS |
10077 | PL_bufend[-2] = '\n'; |
10078 | PL_bufend--; | |
95a20fc0 | 10079 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 | 10080 | } |
3280af22 NIS |
10081 | else if (PL_bufend[-1] == '\r') |
10082 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 10083 | } |
3280af22 NIS |
10084 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
10085 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 10086 | #endif |
5097bf9b | 10087 | if (*s == term && memEQ(s,PL_tokenbuf + 1,len)) { |
3328ab5a FC |
10088 | SvREFCNT_dec(PL_linestr); |
10089 | PL_linestr = linestr_save; | |
10090 | PL_linestart = SvPVX(linestr_save); | |
3280af22 | 10091 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
3328ab5a | 10092 | s = d; |
074b1c59 | 10093 | break; |
79072805 LW |
10094 | } |
10095 | else { | |
3280af22 | 10096 | sv_catsv(tmpstr,PL_linestr); |
395c3793 | 10097 | } |
a7922135 | 10098 | } |
395c3793 | 10099 | } |
57843af0 | 10100 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 10101 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
1da4ca5f | 10102 | SvPV_shrink_to_cur(tmpstr); |
79072805 | 10103 | } |
2f31ce75 | 10104 | if (!IN_BYTES) { |
95a20fc0 | 10105 | if (UTF && is_utf8_string((U8*)SvPVX_const(tmpstr), SvCUR(tmpstr))) |
2f31ce75 JH |
10106 | SvUTF8_on(tmpstr); |
10107 | else if (PL_encoding) | |
10108 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
10109 | } | |
3280af22 | 10110 | PL_lex_stuff = tmpstr; |
6154021b | 10111 | pl_yylval.ival = op_type; |
79072805 | 10112 | return s; |
932d0cf1 FC |
10113 | |
10114 | interminable: | |
932d0cf1 FC |
10115 | SvREFCNT_dec(tmpstr); |
10116 | CopLINE_set(PL_curcop, (line_t)PL_multi_start - 1); | |
10117 | missingterm(PL_tokenbuf + 1); | |
79072805 LW |
10118 | } |
10119 | ||
02aa26ce NT |
10120 | /* scan_inputsymbol |
10121 | takes: current position in input buffer | |
10122 | returns: new position in input buffer | |
6154021b | 10123 | side-effects: pl_yylval and lex_op are set. |
02aa26ce NT |
10124 | |
10125 | This code handles: | |
10126 | ||
10127 | <> read from ARGV | |
10128 | <FH> read from filehandle | |
10129 | <pkg::FH> read from package qualified filehandle | |
10130 | <pkg'FH> read from package qualified filehandle | |
10131 | <$fh> read from filehandle in $fh | |
10132 | <*.h> filename glob | |
10133 | ||
10134 | */ | |
10135 | ||
76e3520e | 10136 | STATIC char * |
cea2e8a9 | 10137 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 10138 | { |
97aff369 | 10139 | dVAR; |
eb578fdb | 10140 | char *s = start; /* current position in buffer */ |
1b420867 | 10141 | char *end; |
79072805 | 10142 | I32 len; |
6136c704 AL |
10143 | char *d = PL_tokenbuf; /* start of temp holding space */ |
10144 | const char * const e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
10145 | ||
7918f24d NC |
10146 | PERL_ARGS_ASSERT_SCAN_INPUTSYMBOL; |
10147 | ||
1b420867 GS |
10148 | end = strchr(s, '\n'); |
10149 | if (!end) | |
10150 | end = PL_bufend; | |
10151 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
10152 | |
10153 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 10154 | or if it didn't end, or if we see a newline |
02aa26ce NT |
10155 | */ |
10156 | ||
bb7a0f54 | 10157 | if (len >= (I32)sizeof PL_tokenbuf) |
cea2e8a9 | 10158 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 10159 | if (s >= end) |
cea2e8a9 | 10160 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 10161 | |
fc36a67e | 10162 | s++; |
02aa26ce NT |
10163 | |
10164 | /* check for <$fh> | |
10165 | Remember, only scalar variables are interpreted as filehandles by | |
10166 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
10167 | treated as a glob() call. | |
10168 | This code makes use of the fact that except for the $ at the front, | |
10169 | a scalar variable and a filehandle look the same. | |
10170 | */ | |
4633a7c4 | 10171 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
10172 | |
10173 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
8a2bca12 | 10174 | while (*d && (isWORDCHAR_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
2a507800 | 10175 | d += UTF ? UTF8SKIP(d) : 1; |
02aa26ce NT |
10176 | |
10177 | /* If we've tried to read what we allow filehandles to look like, and | |
10178 | there's still text left, then it must be a glob() and not a getline. | |
10179 | Use scan_str to pull out the stuff between the <> and treat it | |
10180 | as nothing more than a string. | |
10181 | */ | |
10182 | ||
3280af22 | 10183 | if (d - PL_tokenbuf != len) { |
6154021b | 10184 | pl_yylval.ival = OP_GLOB; |
4d68ffa0 | 10185 | s = scan_str(start,!!PL_madskills,FALSE,FALSE, FALSE); |
79072805 | 10186 | if (!s) |
cea2e8a9 | 10187 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
10188 | return s; |
10189 | } | |
395c3793 | 10190 | else { |
9b3023bc | 10191 | bool readline_overriden = FALSE; |
6136c704 | 10192 | GV *gv_readline; |
9b3023bc | 10193 | GV **gvp; |
02aa26ce | 10194 | /* we're in a filehandle read situation */ |
3280af22 | 10195 | d = PL_tokenbuf; |
02aa26ce NT |
10196 | |
10197 | /* turn <> into <ARGV> */ | |
79072805 | 10198 | if (!len) |
689badd5 | 10199 | Copy("ARGV",d,5,char); |
02aa26ce | 10200 | |
9b3023bc | 10201 | /* Check whether readline() is overriden */ |
fafc274c | 10202 | gv_readline = gv_fetchpvs("readline", GV_NOTQUAL, SVt_PVCV); |
6136c704 | 10203 | if ((gv_readline |
ba979b31 | 10204 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) |
9b3023bc | 10205 | || |
017a3ce5 | 10206 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readline", FALSE)) |
9e0d86f8 | 10207 | && (gv_readline = *gvp) && isGV_with_GP(gv_readline) |
ba979b31 | 10208 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
10209 | readline_overriden = TRUE; |
10210 | ||
02aa26ce NT |
10211 | /* if <$fh>, create the ops to turn the variable into a |
10212 | filehandle | |
10213 | */ | |
79072805 | 10214 | if (*d == '$') { |
02aa26ce NT |
10215 | /* try to find it in the pad for this block, otherwise find |
10216 | add symbol table ops | |
10217 | */ | |
bc9b26ca | 10218 | const PADOFFSET tmp = pad_findmy_pvn(d, len, UTF ? SVf_UTF8 : 0); |
bbd11bfc | 10219 | if (tmp != NOT_IN_PAD) { |
00b1698f | 10220 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
6136c704 AL |
10221 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
10222 | HEK * const stashname = HvNAME_HEK(stash); | |
10223 | SV * const sym = sv_2mortal(newSVhek(stashname)); | |
396482e1 | 10224 | sv_catpvs(sym, "::"); |
f558d5af JH |
10225 | sv_catpv(sym, d+1); |
10226 | d = SvPVX(sym); | |
10227 | goto intro_sym; | |
10228 | } | |
10229 | else { | |
6136c704 | 10230 | OP * const o = newOP(OP_PADSV, 0); |
f558d5af | 10231 | o->op_targ = tmp; |
9b3023bc RGS |
10232 | PL_lex_op = readline_overriden |
10233 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 10234 | op_append_elem(OP_LIST, o, |
9b3023bc RGS |
10235 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) |
10236 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 10237 | } |
a0d0e21e LW |
10238 | } |
10239 | else { | |
f558d5af JH |
10240 | GV *gv; |
10241 | ++d; | |
10242 | intro_sym: | |
10243 | gv = gv_fetchpv(d, | |
10244 | (PL_in_eval | |
10245 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
25db2ea6 | 10246 | : GV_ADDMULTI) | ( UTF ? SVf_UTF8 : 0 ), |
f558d5af | 10247 | SVt_PV); |
9b3023bc RGS |
10248 | PL_lex_op = readline_overriden |
10249 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 10250 | op_append_elem(OP_LIST, |
9b3023bc RGS |
10251 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), |
10252 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
10253 | : (OP*)newUNOP(OP_READLINE, 0, | |
10254 | newUNOP(OP_RV2SV, 0, | |
10255 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 10256 | } |
7c6fadd6 RGS |
10257 | if (!readline_overriden) |
10258 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
6154021b RGS |
10259 | /* we created the ops in PL_lex_op, so make pl_yylval.ival a null op */ |
10260 | pl_yylval.ival = OP_NULL; | |
79072805 | 10261 | } |
02aa26ce NT |
10262 | |
10263 | /* If it's none of the above, it must be a literal filehandle | |
10264 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 10265 | else { |
25db2ea6 | 10266 | GV * const gv = gv_fetchpv(d, GV_ADD | ( UTF ? SVf_UTF8 : 0 ), SVt_PVIO); |
9b3023bc RGS |
10267 | PL_lex_op = readline_overriden |
10268 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 10269 | op_append_elem(OP_LIST, |
9b3023bc RGS |
10270 | newGVOP(OP_GV, 0, gv), |
10271 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
10272 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
6154021b | 10273 | pl_yylval.ival = OP_NULL; |
79072805 LW |
10274 | } |
10275 | } | |
02aa26ce | 10276 | |
79072805 LW |
10277 | return s; |
10278 | } | |
10279 | ||
02aa26ce NT |
10280 | |
10281 | /* scan_str | |
10282 | takes: start position in buffer | |
09bef843 SB |
10283 | keep_quoted preserve \ on the embedded delimiter(s) |
10284 | keep_delims preserve the delimiters around the string | |
d24ca0c5 DM |
10285 | re_reparse compiling a run-time /(?{})/: |
10286 | collapse // to /, and skip encoding src | |
02aa26ce NT |
10287 | returns: position to continue reading from buffer |
10288 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
10289 | updates the read buffer. | |
10290 | ||
10291 | This subroutine pulls a string out of the input. It is called for: | |
10292 | q single quotes q(literal text) | |
10293 | ' single quotes 'literal text' | |
10294 | qq double quotes qq(interpolate $here please) | |
10295 | " double quotes "interpolate $here please" | |
10296 | qx backticks qx(/bin/ls -l) | |
10297 | ` backticks `/bin/ls -l` | |
10298 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
10299 | m// regexp match m/this/ | |
10300 | s/// regexp substitute s/this/that/ | |
10301 | tr/// string transliterate tr/this/that/ | |
10302 | y/// string transliterate y/this/that/ | |
10303 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 10304 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
10305 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
10306 | ||
10307 | In most of these cases (all but <>, patterns and transliterate) | |
10308 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
10309 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
10310 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
10311 | calls scan_str(). | |
4e553d73 | 10312 | |
02aa26ce NT |
10313 | It skips whitespace before the string starts, and treats the first |
10314 | character as the delimiter. If the delimiter is one of ([{< then | |
10315 | the corresponding "close" character )]}> is used as the closing | |
10316 | delimiter. It allows quoting of delimiters, and if the string has | |
10317 | balanced delimiters ([{<>}]) it allows nesting. | |
10318 | ||
37fd879b HS |
10319 | On success, the SV with the resulting string is put into lex_stuff or, |
10320 | if that is already non-NULL, into lex_repl. The second case occurs only | |
10321 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
10322 | For convenience, the terminating delimiter character is stuffed into | |
10323 | SvIVX of the SV. | |
02aa26ce NT |
10324 | */ |
10325 | ||
76e3520e | 10326 | STATIC char * |
4d68ffa0 KW |
10327 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims, int re_reparse, |
10328 | bool deprecate_escaped_meta /* Should we issue a deprecation warning | |
10329 | for certain paired metacharacters that | |
10330 | appear escaped within it */ | |
10331 | ) | |
79072805 | 10332 | { |
97aff369 | 10333 | dVAR; |
a8d9c7ae KW |
10334 | SV *sv; /* scalar value: string */ |
10335 | const char *tmps; /* temp string, used for delimiter matching */ | |
eb578fdb KW |
10336 | char *s = start; /* current position in the buffer */ |
10337 | char term; /* terminating character */ | |
10338 | char *to; /* current position in the sv's data */ | |
a8d9c7ae KW |
10339 | I32 brackets = 1; /* bracket nesting level */ |
10340 | bool has_utf8 = FALSE; /* is there any utf8 content? */ | |
10341 | I32 termcode; /* terminating char. code */ | |
10342 | U8 termstr[UTF8_MAXBYTES]; /* terminating string */ | |
10343 | STRLEN termlen; /* length of terminating string */ | |
10344 | int last_off = 0; /* last position for nesting bracket */ | |
4d68ffa0 | 10345 | char *escaped_open = NULL; |
5db06880 NC |
10346 | #ifdef PERL_MAD |
10347 | int stuffstart; | |
10348 | char *tstart; | |
10349 | #endif | |
02aa26ce | 10350 | |
7918f24d NC |
10351 | PERL_ARGS_ASSERT_SCAN_STR; |
10352 | ||
02aa26ce | 10353 | /* skip space before the delimiter */ |
29595ff2 NC |
10354 | if (isSPACE(*s)) { |
10355 | s = PEEKSPACE(s); | |
10356 | } | |
02aa26ce | 10357 | |
5db06880 | 10358 | #ifdef PERL_MAD |
cd81e915 NC |
10359 | if (PL_realtokenstart >= 0) { |
10360 | stuffstart = PL_realtokenstart; | |
10361 | PL_realtokenstart = -1; | |
5db06880 NC |
10362 | } |
10363 | else | |
10364 | stuffstart = start - SvPVX(PL_linestr); | |
10365 | #endif | |
02aa26ce | 10366 | /* mark where we are, in case we need to report errors */ |
79072805 | 10367 | CLINE; |
02aa26ce NT |
10368 | |
10369 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 10370 | term = *s; |
220e2d4e IH |
10371 | if (!UTF) { |
10372 | termcode = termstr[0] = term; | |
10373 | termlen = 1; | |
10374 | } | |
10375 | else { | |
4b88fb76 | 10376 | termcode = utf8_to_uvchr_buf((U8*)s, (U8*)PL_bufend, &termlen); |
220e2d4e IH |
10377 | Copy(s, termstr, termlen, U8); |
10378 | if (!UTF8_IS_INVARIANT(term)) | |
10379 | has_utf8 = TRUE; | |
10380 | } | |
b1c7b182 | 10381 | |
02aa26ce | 10382 | /* mark where we are */ |
57843af0 | 10383 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 10384 | PL_multi_open = term; |
02aa26ce NT |
10385 | |
10386 | /* find corresponding closing delimiter */ | |
93a17b20 | 10387 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
10388 | termcode = termstr[0] = term = tmps[5]; |
10389 | ||
3280af22 | 10390 | PL_multi_close = term; |
79072805 | 10391 | |
4d68ffa0 KW |
10392 | /* A warning is raised if the input parameter requires it for escaped (by a |
10393 | * backslash) paired metacharacters {} [] and () when the delimiters are | |
10394 | * those same characters, and the backslash is ineffective. This doesn't | |
10395 | * happen for <>, as they aren't metas. */ | |
10396 | if (deprecate_escaped_meta | |
10397 | && (PL_multi_open == PL_multi_close | |
10398 | || ! ckWARN_d(WARN_DEPRECATED) | |
10399 | || PL_multi_open == '<')) | |
10400 | { | |
10401 | deprecate_escaped_meta = FALSE; | |
10402 | } | |
10403 | ||
561b68a9 SH |
10404 | /* create a new SV to hold the contents. 79 is the SV's initial length. |
10405 | What a random number. */ | |
7d0a29fe NC |
10406 | sv = newSV_type(SVt_PVIV); |
10407 | SvGROW(sv, 80); | |
45977657 | 10408 | SvIV_set(sv, termcode); |
a0d0e21e | 10409 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
10410 | |
10411 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 10412 | if (keep_delims) |
220e2d4e IH |
10413 | sv_catpvn(sv, s, termlen); |
10414 | s += termlen; | |
5db06880 NC |
10415 | #ifdef PERL_MAD |
10416 | tstart = SvPVX(PL_linestr) + stuffstart; | |
1cac5c33 | 10417 | if (PL_madskills && !PL_thisopen && !keep_delims) { |
cd81e915 | 10418 | PL_thisopen = newSVpvn(tstart, s - tstart); |
5db06880 NC |
10419 | stuffstart = s - SvPVX(PL_linestr); |
10420 | } | |
10421 | #endif | |
93a17b20 | 10422 | for (;;) { |
d24ca0c5 | 10423 | if (PL_encoding && !UTF && !re_reparse) { |
220e2d4e IH |
10424 | bool cont = TRUE; |
10425 | ||
10426 | while (cont) { | |
95a20fc0 | 10427 | int offset = s - SvPVX_const(PL_linestr); |
66a1b24b | 10428 | const bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, |
f3b9ce0f | 10429 | &offset, (char*)termstr, termlen); |
6136c704 AL |
10430 | const char * const ns = SvPVX_const(PL_linestr) + offset; |
10431 | char * const svlast = SvEND(sv) - 1; | |
220e2d4e IH |
10432 | |
10433 | for (; s < ns; s++) { | |
60d63348 | 10434 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10435 | COPLINE_INC_WITH_HERELINES; |
220e2d4e IH |
10436 | } |
10437 | if (!found) | |
10438 | goto read_more_line; | |
10439 | else { | |
10440 | /* handle quoted delimiters */ | |
52327caf | 10441 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
f54cb97a | 10442 | const char *t; |
95a20fc0 | 10443 | for (t = svlast-2; t >= SvPVX_const(sv) && *t == '\\';) |
220e2d4e IH |
10444 | t--; |
10445 | if ((svlast-1 - t) % 2) { | |
10446 | if (!keep_quoted) { | |
10447 | *(svlast-1) = term; | |
10448 | *svlast = '\0'; | |
10449 | SvCUR_set(sv, SvCUR(sv) - 1); | |
10450 | } | |
10451 | continue; | |
10452 | } | |
10453 | } | |
10454 | if (PL_multi_open == PL_multi_close) { | |
10455 | cont = FALSE; | |
10456 | } | |
10457 | else { | |
f54cb97a AL |
10458 | const char *t; |
10459 | char *w; | |
0331ef07 | 10460 | for (t = w = SvPVX(sv)+last_off; t < svlast; w++, t++) { |
220e2d4e IH |
10461 | /* At here, all closes are "was quoted" one, |
10462 | so we don't check PL_multi_close. */ | |
10463 | if (*t == '\\') { | |
10464 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
10465 | t++; | |
10466 | else | |
10467 | *w++ = *t++; | |
10468 | } | |
10469 | else if (*t == PL_multi_open) | |
10470 | brackets++; | |
10471 | ||
10472 | *w = *t; | |
10473 | } | |
10474 | if (w < t) { | |
10475 | *w++ = term; | |
10476 | *w = '\0'; | |
95a20fc0 | 10477 | SvCUR_set(sv, w - SvPVX_const(sv)); |
220e2d4e | 10478 | } |
0331ef07 | 10479 | last_off = w - SvPVX(sv); |
220e2d4e IH |
10480 | if (--brackets <= 0) |
10481 | cont = FALSE; | |
10482 | } | |
10483 | } | |
10484 | } | |
10485 | if (!keep_delims) { | |
10486 | SvCUR_set(sv, SvCUR(sv) - 1); | |
10487 | *SvEND(sv) = '\0'; | |
10488 | } | |
10489 | break; | |
10490 | } | |
10491 | ||
02aa26ce | 10492 | /* extend sv if need be */ |
3280af22 | 10493 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 10494 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 10495 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 10496 | |
02aa26ce | 10497 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
10498 | if (PL_multi_open == PL_multi_close) { |
10499 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 10500 | /* embedded newlines increment the current line number */ |
60d63348 | 10501 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10502 | COPLINE_INC_WITH_HERELINES; |
02aa26ce | 10503 | /* handle quoted delimiters */ |
3280af22 | 10504 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
d24ca0c5 DM |
10505 | if (!keep_quoted |
10506 | && (s[1] == term | |
10507 | || (re_reparse && s[1] == '\\')) | |
10508 | ) | |
a0d0e21e | 10509 | s++; |
d24ca0c5 | 10510 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
10511 | else |
10512 | *to++ = *s++; | |
10513 | } | |
02aa26ce NT |
10514 | /* terminate when run out of buffer (the for() condition), or |
10515 | have found the terminator */ | |
220e2d4e IH |
10516 | else if (*s == term) { |
10517 | if (termlen == 1) | |
10518 | break; | |
f3b9ce0f | 10519 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
10520 | break; |
10521 | } | |
63cd0674 | 10522 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 10523 | has_utf8 = TRUE; |
93a17b20 LW |
10524 | *to = *s; |
10525 | } | |
10526 | } | |
02aa26ce NT |
10527 | |
10528 | /* if the terminator isn't the same as the start character (e.g., | |
10529 | matched brackets), we have to allow more in the quoting, and | |
10530 | be prepared for nested brackets. | |
10531 | */ | |
93a17b20 | 10532 | else { |
02aa26ce | 10533 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 10534 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 10535 | /* embedded newlines increment the line count */ |
60d63348 | 10536 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10537 | COPLINE_INC_WITH_HERELINES; |
02aa26ce | 10538 | /* backslashes can escape the open or closing characters */ |
3280af22 | 10539 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
10540 | if (!keep_quoted && |
10541 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
4d68ffa0 | 10542 | { |
a0d0e21e | 10543 | s++; |
4d68ffa0 KW |
10544 | |
10545 | /* Here, 'deprecate_escaped_meta' is true iff the | |
10546 | * delimiters are paired metacharacters, and 's' points | |
10547 | * to an occurrence of one of them within the string, | |
10548 | * which was preceded by a backslash. If this is a | |
10549 | * context where the delimiter is also a metacharacter, | |
10550 | * the backslash is useless, and deprecated. () and [] | |
10551 | * are meta in any context. {} are meta only when | |
10552 | * appearing in a quantifier or in things like '\p{'. | |
10553 | * They also aren't meta unless there is a matching | |
10554 | * closed, escaped char later on within the string. | |
10555 | * If 's' points to an open, set a flag; if to a close, | |
10556 | * test that flag, and raise a warning if it was set */ | |
10557 | ||
10558 | if (deprecate_escaped_meta) { | |
10559 | if (*s == PL_multi_open) { | |
10560 | if (*s != '{') { | |
10561 | escaped_open = s; | |
10562 | } | |
10563 | else if (regcurly(s, | |
10564 | TRUE /* Look for a closing | |
10565 | '\}' */) | |
10566 | || (s - start > 2 /* Look for e.g. | |
10567 | '\x{' */ | |
10568 | && _generic_isCC(*(s-2), _CC_BACKSLASH_FOO_LBRACE_IS_META))) | |
10569 | { | |
10570 | escaped_open = s; | |
10571 | } | |
10572 | } | |
10573 | else if (escaped_open) { | |
10574 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), | |
10575 | "Useless use of '\\'; doesn't escape metacharacter '%c'", PL_multi_open); | |
10576 | escaped_open = NULL; | |
10577 | } | |
10578 | } | |
10579 | } | |
a0d0e21e LW |
10580 | else |
10581 | *to++ = *s++; | |
10582 | } | |
02aa26ce | 10583 | /* allow nested opens and closes */ |
3280af22 | 10584 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 10585 | break; |
3280af22 | 10586 | else if (*s == PL_multi_open) |
93a17b20 | 10587 | brackets++; |
63cd0674 | 10588 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 10589 | has_utf8 = TRUE; |
93a17b20 LW |
10590 | *to = *s; |
10591 | } | |
10592 | } | |
02aa26ce | 10593 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 10594 | *to = '\0'; |
95a20fc0 | 10595 | SvCUR_set(sv, to - SvPVX_const(sv)); |
93a17b20 | 10596 | |
02aa26ce NT |
10597 | /* |
10598 | * this next chunk reads more into the buffer if we're not done yet | |
10599 | */ | |
10600 | ||
b1c7b182 GS |
10601 | if (s < PL_bufend) |
10602 | break; /* handle case where we are done yet :-) */ | |
79072805 | 10603 | |
6a27c188 | 10604 | #ifndef PERL_STRICT_CR |
95a20fc0 | 10605 | if (to - SvPVX_const(sv) >= 2) { |
c6f14548 GS |
10606 | if ((to[-2] == '\r' && to[-1] == '\n') || |
10607 | (to[-2] == '\n' && to[-1] == '\r')) | |
10608 | { | |
f63a84b2 LW |
10609 | to[-2] = '\n'; |
10610 | to--; | |
95a20fc0 | 10611 | SvCUR_set(sv, to - SvPVX_const(sv)); |
f63a84b2 LW |
10612 | } |
10613 | else if (to[-1] == '\r') | |
10614 | to[-1] = '\n'; | |
10615 | } | |
95a20fc0 | 10616 | else if (to - SvPVX_const(sv) == 1 && to[-1] == '\r') |
f63a84b2 LW |
10617 | to[-1] = '\n'; |
10618 | #endif | |
10619 | ||
220e2d4e | 10620 | read_more_line: |
02aa26ce NT |
10621 | /* if we're out of file, or a read fails, bail and reset the current |
10622 | line marker so we can report where the unterminated string began | |
10623 | */ | |
5db06880 NC |
10624 | #ifdef PERL_MAD |
10625 | if (PL_madskills) { | |
c35e046a | 10626 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 NC |
10627 | if (PL_thisstuff) |
10628 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 10629 | else |
cd81e915 | 10630 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
10631 | } |
10632 | #endif | |
83944c01 | 10633 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
10634 | PL_bufptr = PL_bufend; |
10635 | if (!lex_next_chunk(0)) { | |
c07a80fd | 10636 | sv_free(sv); |
eb160463 | 10637 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
bd61b366 | 10638 | return NULL; |
79072805 | 10639 | } |
f0e67a1d | 10640 | s = PL_bufptr; |
5db06880 NC |
10641 | #ifdef PERL_MAD |
10642 | stuffstart = 0; | |
10643 | #endif | |
378cc40b | 10644 | } |
4e553d73 | 10645 | |
02aa26ce NT |
10646 | /* at this point, we have successfully read the delimited string */ |
10647 | ||
d24ca0c5 | 10648 | if (!PL_encoding || UTF || re_reparse) { |
5db06880 NC |
10649 | #ifdef PERL_MAD |
10650 | if (PL_madskills) { | |
c35e046a | 10651 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
29522234 | 10652 | const int len = s - tstart; |
cd81e915 | 10653 | if (PL_thisstuff) |
c35e046a | 10654 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 10655 | else |
c35e046a | 10656 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
10657 | if (!PL_thisclose && !keep_delims) |
10658 | PL_thisclose = newSVpvn(s,termlen); | |
5db06880 NC |
10659 | } |
10660 | #endif | |
10661 | ||
220e2d4e IH |
10662 | if (keep_delims) |
10663 | sv_catpvn(sv, s, termlen); | |
10664 | s += termlen; | |
10665 | } | |
5db06880 NC |
10666 | #ifdef PERL_MAD |
10667 | else { | |
10668 | if (PL_madskills) { | |
c35e046a AL |
10669 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
10670 | const int len = s - tstart - termlen; | |
cd81e915 | 10671 | if (PL_thisstuff) |
c35e046a | 10672 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 10673 | else |
c35e046a | 10674 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
10675 | if (!PL_thisclose && !keep_delims) |
10676 | PL_thisclose = newSVpvn(s - termlen,termlen); | |
5db06880 NC |
10677 | } |
10678 | } | |
10679 | #endif | |
d24ca0c5 | 10680 | if (has_utf8 || (PL_encoding && !re_reparse)) |
b1c7b182 | 10681 | SvUTF8_on(sv); |
d0063567 | 10682 | |
57843af0 | 10683 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
10684 | |
10685 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
10686 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
10687 | SvLEN_set(sv, SvCUR(sv) + 1); | |
b7e9a5c2 | 10688 | SvPV_renew(sv, SvLEN(sv)); |
79072805 | 10689 | } |
02aa26ce NT |
10690 | |
10691 | /* decide whether this is the first or second quoted string we've read | |
10692 | for this op | |
10693 | */ | |
4e553d73 | 10694 | |
3280af22 | 10695 | if (PL_lex_stuff) |
7cc34111 | 10696 | PL_sublex_info.repl = sv; |
79072805 | 10697 | else |
3280af22 | 10698 | PL_lex_stuff = sv; |
378cc40b LW |
10699 | return s; |
10700 | } | |
10701 | ||
02aa26ce NT |
10702 | /* |
10703 | scan_num | |
10704 | takes: pointer to position in buffer | |
10705 | returns: pointer to new position in buffer | |
6154021b | 10706 | side-effects: builds ops for the constant in pl_yylval.op |
02aa26ce NT |
10707 | |
10708 | Read a number in any of the formats that Perl accepts: | |
10709 | ||
7fd134d9 JH |
10710 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
10711 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
10712 | 0b[01](_?[01])* |
10713 | 0[0-7](_?[0-7])* | |
10714 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 10715 | |
3280af22 | 10716 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
10717 | thing it reads. |
10718 | ||
10719 | If it reads a number without a decimal point or an exponent, it will | |
10720 | try converting the number to an integer and see if it can do so | |
10721 | without loss of precision. | |
10722 | */ | |
4e553d73 | 10723 | |
378cc40b | 10724 | char * |
bfed75c6 | 10725 | Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp) |
378cc40b | 10726 | { |
97aff369 | 10727 | dVAR; |
eb578fdb KW |
10728 | const char *s = start; /* current position in buffer */ |
10729 | char *d; /* destination in temp buffer */ | |
10730 | char *e; /* end of temp buffer */ | |
86554af2 | 10731 | NV nv; /* number read, as a double */ |
a0714e2c | 10732 | SV *sv = NULL; /* place to put the converted number */ |
a86a20aa | 10733 | bool floatit; /* boolean: int or float? */ |
cbbf8932 | 10734 | const char *lastub = NULL; /* position of last underbar */ |
a1894d81 | 10735 | static const char* const number_too_long = "Number too long"; |
378cc40b | 10736 | |
7918f24d NC |
10737 | PERL_ARGS_ASSERT_SCAN_NUM; |
10738 | ||
02aa26ce NT |
10739 | /* We use the first character to decide what type of number this is */ |
10740 | ||
378cc40b | 10741 | switch (*s) { |
79072805 | 10742 | default: |
5637ef5b | 10743 | Perl_croak(aTHX_ "panic: scan_num, *s=%d", *s); |
4e553d73 | 10744 | |
02aa26ce | 10745 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 10746 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
10747 | case '0': |
10748 | { | |
02aa26ce NT |
10749 | /* variables: |
10750 | u holds the "number so far" | |
4f19785b WSI |
10751 | shift the power of 2 of the base |
10752 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
10753 | overflowed was the number more than we can hold? |
10754 | ||
10755 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
10756 | we in octal/hex/binary?" indicator to disallow hex characters |
10757 | when in octal mode. | |
02aa26ce | 10758 | */ |
9e24b6e2 JH |
10759 | NV n = 0.0; |
10760 | UV u = 0; | |
79072805 | 10761 | I32 shift; |
9e24b6e2 | 10762 | bool overflowed = FALSE; |
61f33854 | 10763 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
27da23d5 JH |
10764 | static const NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
10765 | static const char* const bases[5] = | |
10766 | { "", "binary", "", "octal", "hexadecimal" }; | |
10767 | static const char* const Bases[5] = | |
10768 | { "", "Binary", "", "Octal", "Hexadecimal" }; | |
10769 | static const char* const maxima[5] = | |
10770 | { "", | |
10771 | "0b11111111111111111111111111111111", | |
10772 | "", | |
10773 | "037777777777", | |
10774 | "0xffffffff" }; | |
bfed75c6 | 10775 | const char *base, *Base, *max; |
378cc40b | 10776 | |
02aa26ce | 10777 | /* check for hex */ |
a674e8db | 10778 | if (s[1] == 'x' || s[1] == 'X') { |
378cc40b LW |
10779 | shift = 4; |
10780 | s += 2; | |
61f33854 | 10781 | just_zero = FALSE; |
a674e8db | 10782 | } else if (s[1] == 'b' || s[1] == 'B') { |
4f19785b WSI |
10783 | shift = 1; |
10784 | s += 2; | |
61f33854 | 10785 | just_zero = FALSE; |
378cc40b | 10786 | } |
02aa26ce | 10787 | /* check for a decimal in disguise */ |
b78218b7 | 10788 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 10789 | goto decimal; |
02aa26ce | 10790 | /* so it must be octal */ |
928753ea | 10791 | else { |
378cc40b | 10792 | shift = 3; |
928753ea JH |
10793 | s++; |
10794 | } | |
10795 | ||
10796 | if (*s == '_') { | |
a2a5de95 | 10797 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
10798 | "Misplaced _ in number"); |
10799 | lastub = s++; | |
10800 | } | |
9e24b6e2 JH |
10801 | |
10802 | base = bases[shift]; | |
10803 | Base = Bases[shift]; | |
10804 | max = maxima[shift]; | |
02aa26ce | 10805 | |
4f19785b | 10806 | /* read the rest of the number */ |
378cc40b | 10807 | for (;;) { |
9e24b6e2 | 10808 | /* x is used in the overflow test, |
893fe2c2 | 10809 | b is the digit we're adding on. */ |
9e24b6e2 | 10810 | UV x, b; |
55497cff | 10811 | |
378cc40b | 10812 | switch (*s) { |
02aa26ce NT |
10813 | |
10814 | /* if we don't mention it, we're done */ | |
378cc40b LW |
10815 | default: |
10816 | goto out; | |
02aa26ce | 10817 | |
928753ea | 10818 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 10819 | case '_': |
a2a5de95 NC |
10820 | if (lastub && s == lastub + 1) |
10821 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10822 | "Misplaced _ in number"); | |
928753ea | 10823 | lastub = s++; |
de3bb511 | 10824 | break; |
02aa26ce NT |
10825 | |
10826 | /* 8 and 9 are not octal */ | |
378cc40b | 10827 | case '8': case '9': |
4f19785b | 10828 | if (shift == 3) |
cea2e8a9 | 10829 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 10830 | /* FALL THROUGH */ |
02aa26ce NT |
10831 | |
10832 | /* octal digits */ | |
4f19785b | 10833 | case '2': case '3': case '4': |
378cc40b | 10834 | case '5': case '6': case '7': |
4f19785b | 10835 | if (shift == 1) |
cea2e8a9 | 10836 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
10837 | /* FALL THROUGH */ |
10838 | ||
10839 | case '0': case '1': | |
02aa26ce | 10840 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 10841 | goto digit; |
02aa26ce NT |
10842 | |
10843 | /* hex digits */ | |
378cc40b LW |
10844 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
10845 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 10846 | /* make sure they said 0x */ |
378cc40b LW |
10847 | if (shift != 4) |
10848 | goto out; | |
55497cff | 10849 | b = (*s++ & 7) + 9; |
02aa26ce NT |
10850 | |
10851 | /* Prepare to put the digit we have onto the end | |
10852 | of the number so far. We check for overflows. | |
10853 | */ | |
10854 | ||
55497cff | 10855 | digit: |
61f33854 | 10856 | just_zero = FALSE; |
9e24b6e2 JH |
10857 | if (!overflowed) { |
10858 | x = u << shift; /* make room for the digit */ | |
10859 | ||
10860 | if ((x >> shift) != u | |
10861 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
10862 | overflowed = TRUE; |
10863 | n = (NV) u; | |
9b387841 NC |
10864 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), |
10865 | "Integer overflow in %s number", | |
10866 | base); | |
9e24b6e2 JH |
10867 | } else |
10868 | u = x | b; /* add the digit to the end */ | |
10869 | } | |
10870 | if (overflowed) { | |
10871 | n *= nvshift[shift]; | |
10872 | /* If an NV has not enough bits in its | |
10873 | * mantissa to represent an UV this summing of | |
10874 | * small low-order numbers is a waste of time | |
10875 | * (because the NV cannot preserve the | |
10876 | * low-order bits anyway): we could just | |
10877 | * remember when did we overflow and in the | |
10878 | * end just multiply n by the right | |
10879 | * amount. */ | |
10880 | n += (NV) b; | |
55497cff | 10881 | } |
378cc40b LW |
10882 | break; |
10883 | } | |
10884 | } | |
02aa26ce NT |
10885 | |
10886 | /* if we get here, we had success: make a scalar value from | |
10887 | the number. | |
10888 | */ | |
378cc40b | 10889 | out: |
928753ea JH |
10890 | |
10891 | /* final misplaced underbar check */ | |
10892 | if (s[-1] == '_') { | |
a2a5de95 | 10893 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
10894 | } |
10895 | ||
9e24b6e2 | 10896 | if (overflowed) { |
a2a5de95 NC |
10897 | if (n > 4294967295.0) |
10898 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10899 | "%s number > %s non-portable", | |
10900 | Base, max); | |
b081dd7e | 10901 | sv = newSVnv(n); |
9e24b6e2 JH |
10902 | } |
10903 | else { | |
15041a67 | 10904 | #if UVSIZE > 4 |
a2a5de95 NC |
10905 | if (u > 0xffffffff) |
10906 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10907 | "%s number > %s non-portable", | |
10908 | Base, max); | |
2cc4c2dc | 10909 | #endif |
b081dd7e | 10910 | sv = newSVuv(u); |
9e24b6e2 | 10911 | } |
61f33854 | 10912 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
bfed75c6 | 10913 | sv = new_constant(start, s - start, "integer", |
eb0d8d16 | 10914 | sv, NULL, NULL, 0); |
61f33854 | 10915 | else if (PL_hints & HINT_NEW_BINARY) |
eb0d8d16 | 10916 | sv = new_constant(start, s - start, "binary", sv, NULL, NULL, 0); |
378cc40b LW |
10917 | } |
10918 | break; | |
02aa26ce NT |
10919 | |
10920 | /* | |
10921 | handle decimal numbers. | |
10922 | we're also sent here when we read a 0 as the first digit | |
10923 | */ | |
378cc40b LW |
10924 | case '1': case '2': case '3': case '4': case '5': |
10925 | case '6': case '7': case '8': case '9': case '.': | |
10926 | decimal: | |
3280af22 NIS |
10927 | d = PL_tokenbuf; |
10928 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 10929 | floatit = FALSE; |
02aa26ce NT |
10930 | |
10931 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 10932 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 10933 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
10934 | if -w is on |
10935 | */ | |
93a17b20 | 10936 | if (*s == '_') { |
a2a5de95 NC |
10937 | if (lastub && s == lastub + 1) |
10938 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10939 | "Misplaced _ in number"); | |
928753ea | 10940 | lastub = s++; |
93a17b20 | 10941 | } |
fc36a67e | 10942 | else { |
02aa26ce | 10943 | /* check for end of fixed-length buffer */ |
fc36a67e | 10944 | if (d >= e) |
cea2e8a9 | 10945 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 10946 | /* if we're ok, copy the character */ |
378cc40b | 10947 | *d++ = *s++; |
fc36a67e | 10948 | } |
378cc40b | 10949 | } |
02aa26ce NT |
10950 | |
10951 | /* final misplaced underbar check */ | |
928753ea | 10952 | if (lastub && s == lastub + 1) { |
a2a5de95 | 10953 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 10954 | } |
02aa26ce NT |
10955 | |
10956 | /* read a decimal portion if there is one. avoid | |
10957 | 3..5 being interpreted as the number 3. followed | |
10958 | by .5 | |
10959 | */ | |
2f3197b3 | 10960 | if (*s == '.' && s[1] != '.') { |
79072805 | 10961 | floatit = TRUE; |
378cc40b | 10962 | *d++ = *s++; |
02aa26ce | 10963 | |
928753ea | 10964 | if (*s == '_') { |
a2a5de95 NC |
10965 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10966 | "Misplaced _ in number"); | |
928753ea JH |
10967 | lastub = s; |
10968 | } | |
10969 | ||
10970 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 10971 | */ |
fc36a67e | 10972 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 10973 | /* fixed length buffer check */ |
fc36a67e | 10974 | if (d >= e) |
cea2e8a9 | 10975 | Perl_croak(aTHX_ number_too_long); |
928753ea | 10976 | if (*s == '_') { |
a2a5de95 NC |
10977 | if (lastub && s == lastub + 1) |
10978 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10979 | "Misplaced _ in number"); | |
928753ea JH |
10980 | lastub = s; |
10981 | } | |
10982 | else | |
fc36a67e | 10983 | *d++ = *s; |
378cc40b | 10984 | } |
928753ea JH |
10985 | /* fractional part ending in underbar? */ |
10986 | if (s[-1] == '_') { | |
a2a5de95 NC |
10987 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10988 | "Misplaced _ in number"); | |
928753ea | 10989 | } |
dd629d5b GS |
10990 | if (*s == '.' && isDIGIT(s[1])) { |
10991 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 10992 | s = start; |
dd629d5b GS |
10993 | goto vstring; |
10994 | } | |
378cc40b | 10995 | } |
02aa26ce NT |
10996 | |
10997 | /* read exponent part, if present */ | |
3792a11b | 10998 | if ((*s == 'e' || *s == 'E') && strchr("+-0123456789_", s[1])) { |
79072805 LW |
10999 | floatit = TRUE; |
11000 | s++; | |
02aa26ce NT |
11001 | |
11002 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 11003 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 11004 | |
7fd134d9 JH |
11005 | /* stray preinitial _ */ |
11006 | if (*s == '_') { | |
a2a5de95 NC |
11007 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
11008 | "Misplaced _ in number"); | |
7fd134d9 JH |
11009 | lastub = s++; |
11010 | } | |
11011 | ||
02aa26ce | 11012 | /* allow positive or negative exponent */ |
378cc40b LW |
11013 | if (*s == '+' || *s == '-') |
11014 | *d++ = *s++; | |
02aa26ce | 11015 | |
7fd134d9 JH |
11016 | /* stray initial _ */ |
11017 | if (*s == '_') { | |
a2a5de95 NC |
11018 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
11019 | "Misplaced _ in number"); | |
7fd134d9 JH |
11020 | lastub = s++; |
11021 | } | |
11022 | ||
7fd134d9 JH |
11023 | /* read digits of exponent */ |
11024 | while (isDIGIT(*s) || *s == '_') { | |
11025 | if (isDIGIT(*s)) { | |
11026 | if (d >= e) | |
11027 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 11028 | *d++ = *s++; |
7fd134d9 JH |
11029 | } |
11030 | else { | |
041457d9 | 11031 | if (((lastub && s == lastub + 1) || |
a2a5de95 NC |
11032 | (!isDIGIT(s[1]) && s[1] != '_'))) |
11033 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
11034 | "Misplaced _ in number"); | |
b3b48e3e | 11035 | lastub = s++; |
7fd134d9 | 11036 | } |
7fd134d9 | 11037 | } |
378cc40b | 11038 | } |
02aa26ce | 11039 | |
02aa26ce | 11040 | |
0b7fceb9 | 11041 | /* |
58bb9ec3 NC |
11042 | We try to do an integer conversion first if no characters |
11043 | indicating "float" have been found. | |
0b7fceb9 MU |
11044 | */ |
11045 | ||
11046 | if (!floatit) { | |
58bb9ec3 | 11047 | UV uv; |
6136c704 | 11048 | const int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); |
58bb9ec3 NC |
11049 | |
11050 | if (flags == IS_NUMBER_IN_UV) { | |
11051 | if (uv <= IV_MAX) | |
b081dd7e | 11052 | sv = newSViv(uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 11053 | else |
b081dd7e | 11054 | sv = newSVuv(uv); |
58bb9ec3 NC |
11055 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
11056 | if (uv <= (UV) IV_MIN) | |
b081dd7e | 11057 | sv = newSViv(-(IV)uv); |
58bb9ec3 NC |
11058 | else |
11059 | floatit = TRUE; | |
11060 | } else | |
11061 | floatit = TRUE; | |
11062 | } | |
0b7fceb9 | 11063 | if (floatit) { |
58bb9ec3 NC |
11064 | /* terminate the string */ |
11065 | *d = '\0'; | |
86554af2 | 11066 | nv = Atof(PL_tokenbuf); |
b081dd7e | 11067 | sv = newSVnv(nv); |
86554af2 | 11068 | } |
86554af2 | 11069 | |
eb0d8d16 NC |
11070 | if ( floatit |
11071 | ? (PL_hints & HINT_NEW_FLOAT) : (PL_hints & HINT_NEW_INTEGER) ) { | |
11072 | const char *const key = floatit ? "float" : "integer"; | |
11073 | const STRLEN keylen = floatit ? 5 : 7; | |
11074 | sv = S_new_constant(aTHX_ PL_tokenbuf, d - PL_tokenbuf, | |
11075 | key, keylen, sv, NULL, NULL, 0); | |
11076 | } | |
378cc40b | 11077 | break; |
0b7fceb9 | 11078 | |
e312add1 | 11079 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 11080 | case 'v': |
dd629d5b | 11081 | vstring: |
561b68a9 | 11082 | sv = newSV(5); /* preallocate storage space */ |
ecabb004 FC |
11083 | ENTER_with_name("scan_vstring"); |
11084 | SAVEFREESV(sv); | |
65b06e02 | 11085 | s = scan_vstring(s, PL_bufend, sv); |
ecabb004 FC |
11086 | SvREFCNT_inc_simple_void_NN(sv); |
11087 | LEAVE_with_name("scan_vstring"); | |
a7cb1f99 | 11088 | break; |
79072805 | 11089 | } |
a687059c | 11090 | |
02aa26ce NT |
11091 | /* make the op for the constant and return */ |
11092 | ||
a86a20aa | 11093 | if (sv) |
b73d6f50 | 11094 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 11095 | else |
5f66b61c | 11096 | lvalp->opval = NULL; |
a687059c | 11097 | |
73d840c0 | 11098 | return (char *)s; |
378cc40b LW |
11099 | } |
11100 | ||
76e3520e | 11101 | STATIC char * |
5aaab254 | 11102 | S_scan_formline(pTHX_ char *s) |
378cc40b | 11103 | { |
97aff369 | 11104 | dVAR; |
eb578fdb KW |
11105 | char *eol; |
11106 | char *t; | |
6136c704 | 11107 | SV * const stuff = newSVpvs(""); |
79072805 | 11108 | bool needargs = FALSE; |
c5ee2135 | 11109 | bool eofmt = FALSE; |
5db06880 NC |
11110 | #ifdef PERL_MAD |
11111 | char *tokenstart = s; | |
4f61fd4b JC |
11112 | SV* savewhite = NULL; |
11113 | ||
5db06880 | 11114 | if (PL_madskills) { |
cd81e915 NC |
11115 | savewhite = PL_thiswhite; |
11116 | PL_thiswhite = 0; | |
5db06880 NC |
11117 | } |
11118 | #endif | |
378cc40b | 11119 | |
7918f24d NC |
11120 | PERL_ARGS_ASSERT_SCAN_FORMLINE; |
11121 | ||
79072805 | 11122 | while (!needargs) { |
a1b95068 | 11123 | if (*s == '.') { |
c35e046a | 11124 | t = s+1; |
51882d45 | 11125 | #ifdef PERL_STRICT_CR |
c35e046a AL |
11126 | while (SPACE_OR_TAB(*t)) |
11127 | t++; | |
51882d45 | 11128 | #else |
c35e046a AL |
11129 | while (SPACE_OR_TAB(*t) || *t == '\r') |
11130 | t++; | |
51882d45 | 11131 | #endif |
c5ee2135 WL |
11132 | if (*t == '\n' || t == PL_bufend) { |
11133 | eofmt = TRUE; | |
79072805 | 11134 | break; |
c5ee2135 | 11135 | } |
79072805 | 11136 | } |
583c9d5c FC |
11137 | eol = (char *) memchr(s,'\n',PL_bufend-s); |
11138 | if (!eol++) | |
3280af22 | 11139 | eol = PL_bufend; |
79072805 | 11140 | if (*s != '#') { |
a0d0e21e LW |
11141 | for (t = s; t < eol; t++) { |
11142 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
11143 | needargs = FALSE; | |
11144 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 11145 | } |
a0d0e21e LW |
11146 | if (*t == '@' || *t == '^') |
11147 | needargs = TRUE; | |
378cc40b | 11148 | } |
7121b347 MG |
11149 | if (eol > s) { |
11150 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 11151 | #ifndef PERL_STRICT_CR |
7121b347 MG |
11152 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
11153 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
11154 | end[-2] = '\n'; | |
11155 | end[-1] = '\0'; | |
b162af07 | 11156 | SvCUR_set(stuff, SvCUR(stuff) - 1); |
7121b347 | 11157 | } |
2dc4c65b | 11158 | #endif |
7121b347 MG |
11159 | } |
11160 | else | |
11161 | break; | |
79072805 | 11162 | } |
95a20fc0 | 11163 | s = (char*)eol; |
583c9d5c FC |
11164 | if ((PL_rsfp || PL_parser->filtered) |
11165 | && PL_parser->form_lex_state == LEX_NORMAL) { | |
f0e67a1d | 11166 | bool got_some; |
5db06880 NC |
11167 | #ifdef PERL_MAD |
11168 | if (PL_madskills) { | |
cd81e915 NC |
11169 | if (PL_thistoken) |
11170 | sv_catpvn(PL_thistoken, tokenstart, PL_bufend - tokenstart); | |
5db06880 | 11171 | else |
cd81e915 | 11172 | PL_thistoken = newSVpvn(tokenstart, PL_bufend - tokenstart); |
5db06880 NC |
11173 | } |
11174 | #endif | |
f0e67a1d | 11175 | PL_bufptr = PL_bufend; |
83944c01 | 11176 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
11177 | got_some = lex_next_chunk(0); |
11178 | CopLINE_dec(PL_curcop); | |
11179 | s = PL_bufptr; | |
5db06880 | 11180 | #ifdef PERL_MAD |
f0e67a1d | 11181 | tokenstart = PL_bufptr; |
5db06880 | 11182 | #endif |
f0e67a1d | 11183 | if (!got_some) |
378cc40b | 11184 | break; |
378cc40b | 11185 | } |
463ee0b2 | 11186 | incline(s); |
79072805 | 11187 | } |
a0d0e21e | 11188 | enough: |
5c9ae74d FC |
11189 | if (!SvCUR(stuff) || needargs) |
11190 | PL_lex_state = PL_parser->form_lex_state; | |
a0d0e21e | 11191 | if (SvCUR(stuff)) { |
705fe0e5 | 11192 | PL_expect = XSTATE; |
79072805 | 11193 | if (needargs) { |
cd81e915 | 11194 | start_force(PL_curforce); |
9ded7720 | 11195 | NEXTVAL_NEXTTOKE.ival = 0; |
705fe0e5 | 11196 | force_next(FORMLBRACK); |
79072805 | 11197 | } |
1bd51a4c | 11198 | if (!IN_BYTES) { |
95a20fc0 | 11199 | if (UTF && is_utf8_string((U8*)SvPVX_const(stuff), SvCUR(stuff))) |
1bd51a4c IH |
11200 | SvUTF8_on(stuff); |
11201 | else if (PL_encoding) | |
11202 | sv_recode_to_utf8(stuff, PL_encoding); | |
11203 | } | |
cd81e915 | 11204 | start_force(PL_curforce); |
9ded7720 | 11205 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 11206 | force_next(THING); |
378cc40b | 11207 | } |
79072805 | 11208 | else { |
8990e307 | 11209 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
11210 | if (eofmt) |
11211 | PL_lex_formbrack = 0; | |
79072805 | 11212 | } |
5db06880 NC |
11213 | #ifdef PERL_MAD |
11214 | if (PL_madskills) { | |
cd81e915 NC |
11215 | if (PL_thistoken) |
11216 | sv_catpvn(PL_thistoken, tokenstart, s - tokenstart); | |
5db06880 | 11217 | else |
cd81e915 NC |
11218 | PL_thistoken = newSVpvn(tokenstart, s - tokenstart); |
11219 | PL_thiswhite = savewhite; | |
5db06880 NC |
11220 | } |
11221 | #endif | |
79072805 | 11222 | return s; |
378cc40b | 11223 | } |
a687059c | 11224 | |
ba6d6ac9 | 11225 | I32 |
864dbfa3 | 11226 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 11227 | { |
97aff369 | 11228 | dVAR; |
a3b680e6 | 11229 | const I32 oldsavestack_ix = PL_savestack_ix; |
6136c704 | 11230 | CV* const outsidecv = PL_compcv; |
8990e307 | 11231 | |
7766f137 | 11232 | SAVEI32(PL_subline); |
3280af22 | 11233 | save_item(PL_subname); |
3280af22 | 11234 | SAVESPTR(PL_compcv); |
3280af22 | 11235 | |
ea726b52 | 11236 | PL_compcv = MUTABLE_CV(newSV_type(is_format ? SVt_PVFM : SVt_PVCV)); |
3280af22 NIS |
11237 | CvFLAGS(PL_compcv) |= flags; |
11238 | ||
57843af0 | 11239 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 11240 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
ea726b52 | 11241 | CvOUTSIDE(PL_compcv) = MUTABLE_CV(SvREFCNT_inc_simple(outsidecv)); |
a3985cdc | 11242 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
db4cf31d | 11243 | if (outsidecv && CvPADLIST(outsidecv)) |
8771da69 FC |
11244 | CvPADLIST(PL_compcv)->xpadl_outid = |
11245 | PadlistNAMES(CvPADLIST(outsidecv)); | |
748a9306 | 11246 | |
8990e307 LW |
11247 | return oldsavestack_ix; |
11248 | } | |
11249 | ||
084592ab CN |
11250 | #ifdef __SC__ |
11251 | #pragma segment Perl_yylex | |
11252 | #endif | |
af41e527 | 11253 | static int |
19c62481 | 11254 | S_yywarn(pTHX_ const char *const s, U32 flags) |
8990e307 | 11255 | { |
97aff369 | 11256 | dVAR; |
7918f24d NC |
11257 | |
11258 | PERL_ARGS_ASSERT_YYWARN; | |
11259 | ||
faef0170 | 11260 | PL_in_eval |= EVAL_WARNONLY; |
19c62481 | 11261 | yyerror_pv(s, flags); |
faef0170 | 11262 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 11263 | return 0; |
8990e307 LW |
11264 | } |
11265 | ||
11266 | int | |
15f169a1 | 11267 | Perl_yyerror(pTHX_ const char *const s) |
463ee0b2 | 11268 | { |
19c62481 BF |
11269 | PERL_ARGS_ASSERT_YYERROR; |
11270 | return yyerror_pvn(s, strlen(s), 0); | |
11271 | } | |
11272 | ||
11273 | int | |
11274 | Perl_yyerror_pv(pTHX_ const char *const s, U32 flags) | |
11275 | { | |
11276 | PERL_ARGS_ASSERT_YYERROR_PV; | |
11277 | return yyerror_pvn(s, strlen(s), flags); | |
11278 | } | |
11279 | ||
11280 | int | |
19c62481 BF |
11281 | Perl_yyerror_pvn(pTHX_ const char *const s, STRLEN len, U32 flags) |
11282 | { | |
97aff369 | 11283 | dVAR; |
bfed75c6 | 11284 | const char *context = NULL; |
68dc0745 | 11285 | int contlen = -1; |
46fc3d4c | 11286 | SV *msg; |
19c62481 | 11287 | SV * const where_sv = newSVpvs_flags("", SVs_TEMP); |
5912531f | 11288 | int yychar = PL_parser->yychar; |
463ee0b2 | 11289 | |
19c62481 | 11290 | PERL_ARGS_ASSERT_YYERROR_PVN; |
7918f24d | 11291 | |
3280af22 | 11292 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
19c62481 | 11293 | sv_catpvs(where_sv, "at EOF"); |
8bcfe651 TM |
11294 | else if (PL_oldoldbufptr && PL_bufptr > PL_oldoldbufptr && |
11295 | PL_bufptr - PL_oldoldbufptr < 200 && PL_oldoldbufptr != PL_oldbufptr && | |
11296 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
11297 | /* |
11298 | Only for NetWare: | |
11299 | The code below is removed for NetWare because it abends/crashes on NetWare | |
11300 | when the script has error such as not having the closing quotes like: | |
11301 | if ($var eq "value) | |
11302 | Checking of white spaces is anyway done in NetWare code. | |
11303 | */ | |
11304 | #ifndef NETWARE | |
3280af22 NIS |
11305 | while (isSPACE(*PL_oldoldbufptr)) |
11306 | PL_oldoldbufptr++; | |
f355267c | 11307 | #endif |
3280af22 NIS |
11308 | context = PL_oldoldbufptr; |
11309 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 11310 | } |
8bcfe651 TM |
11311 | else if (PL_oldbufptr && PL_bufptr > PL_oldbufptr && |
11312 | PL_bufptr - PL_oldbufptr < 200 && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
11313 | /* |
11314 | Only for NetWare: | |
11315 | The code below is removed for NetWare because it abends/crashes on NetWare | |
11316 | when the script has error such as not having the closing quotes like: | |
11317 | if ($var eq "value) | |
11318 | Checking of white spaces is anyway done in NetWare code. | |
11319 | */ | |
11320 | #ifndef NETWARE | |
3280af22 NIS |
11321 | while (isSPACE(*PL_oldbufptr)) |
11322 | PL_oldbufptr++; | |
f355267c | 11323 | #endif |
3280af22 NIS |
11324 | context = PL_oldbufptr; |
11325 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
11326 | } |
11327 | else if (yychar > 255) | |
19c62481 | 11328 | sv_catpvs(where_sv, "next token ???"); |
12fbd33b | 11329 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
11330 | if (PL_lex_state == LEX_NORMAL || |
11331 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
19c62481 | 11332 | sv_catpvs(where_sv, "at end of line"); |
3280af22 | 11333 | else if (PL_lex_inpat) |
19c62481 | 11334 | sv_catpvs(where_sv, "within pattern"); |
463ee0b2 | 11335 | else |
19c62481 | 11336 | sv_catpvs(where_sv, "within string"); |
463ee0b2 | 11337 | } |
46fc3d4c | 11338 | else { |
19c62481 | 11339 | sv_catpvs(where_sv, "next char "); |
46fc3d4c | 11340 | if (yychar < 32) |
cea2e8a9 | 11341 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
5e7aa789 | 11342 | else if (isPRINT_LC(yychar)) { |
88c9ea1e | 11343 | const char string = yychar; |
5e7aa789 NC |
11344 | sv_catpvn(where_sv, &string, 1); |
11345 | } | |
463ee0b2 | 11346 | else |
cea2e8a9 | 11347 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
463ee0b2 | 11348 | } |
b604e366 | 11349 | msg = newSVpvn_flags(s, len, (flags & SVf_UTF8) | SVs_TEMP); |
ed094faf | 11350 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 11351 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 11352 | if (context) |
19c62481 BF |
11353 | Perl_sv_catpvf(aTHX_ msg, "near \"%"SVf"\"\n", |
11354 | SVfARG(newSVpvn_flags(context, contlen, | |
11355 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
463ee0b2 | 11356 | else |
19c62481 | 11357 | Perl_sv_catpvf(aTHX_ msg, "%"SVf"\n", SVfARG(where_sv)); |
57843af0 | 11358 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 11359 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 11360 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 11361 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 11362 | PL_multi_end = 0; |
a0d0e21e | 11363 | } |
500960a6 | 11364 | if (PL_in_eval & EVAL_WARNONLY) { |
9b387841 | 11365 | Perl_ck_warner_d(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, SVfARG(msg)); |
500960a6 | 11366 | } |
463ee0b2 | 11367 | else |
5a844595 | 11368 | qerror(msg); |
c7d6bfb2 | 11369 | if (PL_error_count >= 10) { |
eed484f9 DD |
11370 | SV * errsv; |
11371 | if (PL_in_eval && ((errsv = ERRSV), SvCUR(errsv))) | |
d2560b70 | 11372 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
eed484f9 | 11373 | SVfARG(errsv), OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
11374 | else |
11375 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 11376 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 11377 | } |
3280af22 | 11378 | PL_in_my = 0; |
5c284bb0 | 11379 | PL_in_my_stash = NULL; |
463ee0b2 LW |
11380 | return 0; |
11381 | } | |
084592ab CN |
11382 | #ifdef __SC__ |
11383 | #pragma segment Main | |
11384 | #endif | |
4e35701f | 11385 | |
b250498f | 11386 | STATIC char* |
3ae08724 | 11387 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 11388 | { |
97aff369 | 11389 | dVAR; |
f54cb97a | 11390 | const STRLEN slen = SvCUR(PL_linestr); |
7918f24d NC |
11391 | |
11392 | PERL_ARGS_ASSERT_SWALLOW_BOM; | |
11393 | ||
7aa207d6 | 11394 | switch (s[0]) { |
4e553d73 NIS |
11395 | case 0xFF: |
11396 | if (s[1] == 0xFE) { | |
ee6ba15d | 11397 | /* UTF-16 little-endian? (or UTF-32LE?) */ |
3ae08724 | 11398 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
dcbac5bb | 11399 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11400 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32LE"); |
01ec43d0 | 11401 | #ifndef PERL_NO_UTF16_FILTER |
ee6ba15d | 11402 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (BOM)\n"); |
3ae08724 | 11403 | s += 2; |
dea0fc0b | 11404 | if (PL_bufend > (char*)s) { |
81a923f4 | 11405 | s = add_utf16_textfilter(s, TRUE); |
dea0fc0b | 11406 | } |
b250498f | 11407 | #else |
dcbac5bb | 11408 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11409 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); |
b250498f | 11410 | #endif |
01ec43d0 GS |
11411 | } |
11412 | break; | |
78ae23f5 | 11413 | case 0xFE: |
7aa207d6 | 11414 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 11415 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11416 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b JH |
11417 | s += 2; |
11418 | if (PL_bufend > (char *)s) { | |
81a923f4 | 11419 | s = add_utf16_textfilter(s, FALSE); |
dea0fc0b | 11420 | } |
b250498f | 11421 | #else |
dcbac5bb | 11422 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11423 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); |
b250498f | 11424 | #endif |
01ec43d0 GS |
11425 | } |
11426 | break; | |
3ae08724 GS |
11427 | case 0xEF: |
11428 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 11429 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
11430 | s += 3; /* UTF-8 */ |
11431 | } | |
11432 | break; | |
11433 | case 0: | |
7aa207d6 JH |
11434 | if (slen > 3) { |
11435 | if (s[1] == 0) { | |
11436 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
11437 | /* UTF-32 big-endian */ | |
dcbac5bb | 11438 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11439 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32BE"); |
7aa207d6 JH |
11440 | } |
11441 | } | |
11442 | else if (s[2] == 0 && s[3] != 0) { | |
11443 | /* Leading bytes | |
11444 | * 00 xx 00 xx | |
11445 | * are a good indicator of UTF-16BE. */ | |
ee6ba15d | 11446 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11447 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); |
ee6ba15d EB |
11448 | s = add_utf16_textfilter(s, FALSE); |
11449 | #else | |
dcbac5bb | 11450 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d EB |
11451 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); |
11452 | #endif | |
7aa207d6 | 11453 | } |
01ec43d0 | 11454 | } |
e294cc5d JH |
11455 | #ifdef EBCDIC |
11456 | case 0xDD: | |
11457 | if (slen > 3 && s[1] == 0x73 && s[2] == 0x66 && s[3] == 0x73) { | |
11458 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); | |
11459 | s += 4; /* UTF-8 */ | |
11460 | } | |
11461 | break; | |
11462 | #endif | |
11463 | ||
7aa207d6 JH |
11464 | default: |
11465 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
11466 | /* Leading bytes | |
11467 | * xx 00 xx 00 | |
11468 | * are a good indicator of UTF-16LE. */ | |
ee6ba15d | 11469 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11470 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); |
81a923f4 | 11471 | s = add_utf16_textfilter(s, TRUE); |
ee6ba15d | 11472 | #else |
dcbac5bb | 11473 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d EB |
11474 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); |
11475 | #endif | |
7aa207d6 | 11476 | } |
01ec43d0 | 11477 | } |
b8f84bb2 | 11478 | return (char*)s; |
b250498f | 11479 | } |
4755096e | 11480 | |
6e3aabd6 GS |
11481 | |
11482 | #ifndef PERL_NO_UTF16_FILTER | |
11483 | static I32 | |
a28af015 | 11484 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 11485 | { |
97aff369 | 11486 | dVAR; |
f3040f2c | 11487 | SV *const filter = FILTER_DATA(idx); |
2a773401 NC |
11488 | /* We re-use this each time round, throwing the contents away before we |
11489 | return. */ | |
2a773401 | 11490 | SV *const utf16_buffer = MUTABLE_SV(IoTOP_GV(filter)); |
f3040f2c | 11491 | SV *const utf8_buffer = filter; |
c28d6105 | 11492 | IV status = IoPAGE(filter); |
f2338a2e | 11493 | const bool reverse = cBOOL(IoLINES(filter)); |
d2d1d4de | 11494 | I32 retval; |
c8b0cbae | 11495 | |
c85ae797 NC |
11496 | PERL_ARGS_ASSERT_UTF16_TEXTFILTER; |
11497 | ||
c8b0cbae NC |
11498 | /* As we're automatically added, at the lowest level, and hence only called |
11499 | from this file, we can be sure that we're not called in block mode. Hence | |
11500 | don't bother writing code to deal with block mode. */ | |
11501 | if (maxlen) { | |
11502 | Perl_croak(aTHX_ "panic: utf16_textfilter called in block mode (for %d characters)", maxlen); | |
11503 | } | |
c28d6105 NC |
11504 | if (status < 0) { |
11505 | Perl_croak(aTHX_ "panic: utf16_textfilter called after error (status=%"IVdf")", status); | |
11506 | } | |
1de9afcd | 11507 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
c28d6105 | 11508 | "utf16_textfilter(%p,%ce): idx=%d maxlen=%d status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", |
a28af015 | 11509 | FPTR2DPTR(void *, S_utf16_textfilter), |
c28d6105 NC |
11510 | reverse ? 'l' : 'b', idx, maxlen, status, |
11511 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
11512 | ||
11513 | while (1) { | |
11514 | STRLEN chars; | |
11515 | STRLEN have; | |
dea0fc0b | 11516 | I32 newlen; |
2a773401 | 11517 | U8 *end; |
c28d6105 NC |
11518 | /* First, look in our buffer of existing UTF-8 data: */ |
11519 | char *nl = (char *)memchr(SvPVX(utf8_buffer), '\n', SvCUR(utf8_buffer)); | |
11520 | ||
11521 | if (nl) { | |
11522 | ++nl; | |
11523 | } else if (status == 0) { | |
11524 | /* EOF */ | |
11525 | IoPAGE(filter) = 0; | |
11526 | nl = SvEND(utf8_buffer); | |
11527 | } | |
11528 | if (nl) { | |
d2d1d4de NC |
11529 | STRLEN got = nl - SvPVX(utf8_buffer); |
11530 | /* Did we have anything to append? */ | |
11531 | retval = got != 0; | |
11532 | sv_catpvn(sv, SvPVX(utf8_buffer), got); | |
c28d6105 NC |
11533 | /* Everything else in this code works just fine if SVp_POK isn't |
11534 | set. This, however, needs it, and we need it to work, else | |
11535 | we loop infinitely because the buffer is never consumed. */ | |
11536 | sv_chop(utf8_buffer, nl); | |
11537 | break; | |
11538 | } | |
ba77e4cc | 11539 | |
c28d6105 NC |
11540 | /* OK, not a complete line there, so need to read some more UTF-16. |
11541 | Read an extra octect if the buffer currently has an odd number. */ | |
ba77e4cc NC |
11542 | while (1) { |
11543 | if (status <= 0) | |
11544 | break; | |
11545 | if (SvCUR(utf16_buffer) >= 2) { | |
11546 | /* Location of the high octet of the last complete code point. | |
11547 | Gosh, UTF-16 is a pain. All the benefits of variable length, | |
11548 | *coupled* with all the benefits of partial reads and | |
11549 | endianness. */ | |
11550 | const U8 *const last_hi = (U8*)SvPVX(utf16_buffer) | |
11551 | + ((SvCUR(utf16_buffer) & ~1) - (reverse ? 1 : 2)); | |
11552 | ||
11553 | if (*last_hi < 0xd8 || *last_hi > 0xdb) { | |
11554 | break; | |
11555 | } | |
11556 | ||
11557 | /* We have the first half of a surrogate. Read more. */ | |
11558 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter partial surrogate detected at %p\n", last_hi)); | |
11559 | } | |
c28d6105 | 11560 | |
c28d6105 NC |
11561 | status = FILTER_READ(idx + 1, utf16_buffer, |
11562 | 160 + (SvCUR(utf16_buffer) & 1)); | |
11563 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter status=%"IVdf" SvCUR(sv)=%"UVuf"\n", status, (UV)SvCUR(utf16_buffer))); | |
ba77e4cc | 11564 | DEBUG_P({ sv_dump(utf16_buffer); sv_dump(utf8_buffer);}); |
c28d6105 NC |
11565 | if (status < 0) { |
11566 | /* Error */ | |
11567 | IoPAGE(filter) = status; | |
11568 | return status; | |
11569 | } | |
11570 | } | |
11571 | ||
11572 | chars = SvCUR(utf16_buffer) >> 1; | |
11573 | have = SvCUR(utf8_buffer); | |
11574 | SvGROW(utf8_buffer, have + chars * 3 + 1); | |
2a773401 | 11575 | |
aa6dbd60 | 11576 | if (reverse) { |
c28d6105 NC |
11577 | end = utf16_to_utf8_reversed((U8*)SvPVX(utf16_buffer), |
11578 | (U8*)SvPVX_const(utf8_buffer) + have, | |
11579 | chars * 2, &newlen); | |
aa6dbd60 | 11580 | } else { |
2a773401 | 11581 | end = utf16_to_utf8((U8*)SvPVX(utf16_buffer), |
c28d6105 NC |
11582 | (U8*)SvPVX_const(utf8_buffer) + have, |
11583 | chars * 2, &newlen); | |
2a773401 | 11584 | } |
c28d6105 | 11585 | SvCUR_set(utf8_buffer, have + newlen); |
2a773401 | 11586 | *end = '\0'; |
c28d6105 | 11587 | |
e07286ed NC |
11588 | /* No need to keep this SV "well-formed" with a '\0' after the end, as |
11589 | it's private to us, and utf16_to_utf8{,reversed} take a | |
11590 | (pointer,length) pair, rather than a NUL-terminated string. */ | |
11591 | if(SvCUR(utf16_buffer) & 1) { | |
11592 | *SvPVX(utf16_buffer) = SvEND(utf16_buffer)[-1]; | |
11593 | SvCUR_set(utf16_buffer, 1); | |
11594 | } else { | |
11595 | SvCUR_set(utf16_buffer, 0); | |
11596 | } | |
2a773401 | 11597 | } |
c28d6105 NC |
11598 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
11599 | "utf16_textfilter: returns, status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", | |
11600 | status, | |
11601 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
11602 | DEBUG_P({ sv_dump(utf8_buffer); sv_dump(sv);}); | |
d2d1d4de | 11603 | return retval; |
6e3aabd6 | 11604 | } |
81a923f4 NC |
11605 | |
11606 | static U8 * | |
11607 | S_add_utf16_textfilter(pTHX_ U8 *const s, bool reversed) | |
11608 | { | |
2a773401 | 11609 | SV *filter = filter_add(S_utf16_textfilter, NULL); |
81a923f4 | 11610 | |
c85ae797 NC |
11611 | PERL_ARGS_ASSERT_ADD_UTF16_TEXTFILTER; |
11612 | ||
c28d6105 | 11613 | IoTOP_GV(filter) = MUTABLE_GV(newSVpvn((char *)s, PL_bufend - (char*)s)); |
f3040f2c | 11614 | sv_setpvs(filter, ""); |
2a773401 | 11615 | IoLINES(filter) = reversed; |
c28d6105 NC |
11616 | IoPAGE(filter) = 1; /* Not EOF */ |
11617 | ||
11618 | /* Sadly, we have to return a valid pointer, come what may, so we have to | |
11619 | ignore any error return from this. */ | |
11620 | SvCUR_set(PL_linestr, 0); | |
11621 | if (FILTER_READ(0, PL_linestr, 0)) { | |
11622 | SvUTF8_on(PL_linestr); | |
81a923f4 | 11623 | } else { |
c28d6105 | 11624 | SvUTF8_on(PL_linestr); |
81a923f4 | 11625 | } |
c28d6105 | 11626 | PL_bufend = SvEND(PL_linestr); |
81a923f4 NC |
11627 | return (U8*)SvPVX(PL_linestr); |
11628 | } | |
6e3aabd6 | 11629 | #endif |
9f4817db | 11630 | |
f333445c JP |
11631 | /* |
11632 | Returns a pointer to the next character after the parsed | |
11633 | vstring, as well as updating the passed in sv. | |
11634 | ||
11635 | Function must be called like | |
11636 | ||
615e0a48 | 11637 | sv = sv_2mortal(newSV(5)); |
65b06e02 | 11638 | s = scan_vstring(s,e,sv); |
f333445c | 11639 | |
65b06e02 | 11640 | where s and e are the start and end of the string. |
f333445c JP |
11641 | The sv should already be large enough to store the vstring |
11642 | passed in, for performance reasons. | |
11643 | ||
615e0a48 FC |
11644 | This function may croak if fatal warnings are enabled in the |
11645 | calling scope, hence the sv_2mortal in the example (to prevent | |
11646 | a leak). Make sure to do SvREFCNT_inc afterwards if you use | |
11647 | sv_2mortal. | |
11648 | ||
f333445c JP |
11649 | */ |
11650 | ||
11651 | char * | |
15f169a1 | 11652 | Perl_scan_vstring(pTHX_ const char *s, const char *const e, SV *sv) |
f333445c | 11653 | { |
97aff369 | 11654 | dVAR; |
bfed75c6 AL |
11655 | const char *pos = s; |
11656 | const char *start = s; | |
7918f24d NC |
11657 | |
11658 | PERL_ARGS_ASSERT_SCAN_VSTRING; | |
11659 | ||
f333445c | 11660 | if (*pos == 'v') pos++; /* get past 'v' */ |
65b06e02 | 11661 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
3e884cbf | 11662 | pos++; |
f333445c JP |
11663 | if ( *pos != '.') { |
11664 | /* this may not be a v-string if followed by => */ | |
bfed75c6 | 11665 | const char *next = pos; |
65b06e02 | 11666 | while (next < e && isSPACE(*next)) |
8fc7bb1c | 11667 | ++next; |
65b06e02 | 11668 | if ((e - next) >= 2 && *next == '=' && next[1] == '>' ) { |
f333445c JP |
11669 | /* return string not v-string */ |
11670 | sv_setpvn(sv,(char *)s,pos-s); | |
73d840c0 | 11671 | return (char *)pos; |
f333445c JP |
11672 | } |
11673 | } | |
11674 | ||
11675 | if (!isALPHA(*pos)) { | |
89ebb4a3 | 11676 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
f333445c | 11677 | |
d4c19fe8 AL |
11678 | if (*s == 'v') |
11679 | s++; /* get past 'v' */ | |
f333445c | 11680 | |
76f68e9b | 11681 | sv_setpvs(sv, ""); |
f333445c JP |
11682 | |
11683 | for (;;) { | |
d4c19fe8 | 11684 | /* this is atoi() that tolerates underscores */ |
0bd48802 AL |
11685 | U8 *tmpend; |
11686 | UV rev = 0; | |
d4c19fe8 AL |
11687 | const char *end = pos; |
11688 | UV mult = 1; | |
11689 | while (--end >= s) { | |
11690 | if (*end != '_') { | |
11691 | const UV orev = rev; | |
f333445c JP |
11692 | rev += (*end - '0') * mult; |
11693 | mult *= 10; | |
9b387841 | 11694 | if (orev > rev) |
dcbac5bb | 11695 | /* diag_listed_as: Integer overflow in %s number */ |
9b387841 NC |
11696 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), |
11697 | "Integer overflow in decimal number"); | |
f333445c JP |
11698 | } |
11699 | } | |
11700 | #ifdef EBCDIC | |
11701 | if (rev > 0x7FFFFFFF) | |
11702 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
11703 | #endif | |
11704 | /* Append native character for the rev point */ | |
11705 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
11706 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
11707 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
11708 | SvUTF8_on(sv); | |
65b06e02 | 11709 | if (pos + 1 < e && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
11710 | s = ++pos; |
11711 | else { | |
11712 | s = pos; | |
11713 | break; | |
11714 | } | |
65b06e02 | 11715 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
11716 | pos++; |
11717 | } | |
11718 | SvPOK_on(sv); | |
11719 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
11720 | SvRMAGICAL_on(sv); | |
11721 | } | |
73d840c0 | 11722 | return (char *)s; |
f333445c JP |
11723 | } |
11724 | ||
88e1f1a2 JV |
11725 | int |
11726 | Perl_keyword_plugin_standard(pTHX_ | |
11727 | char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) | |
11728 | { | |
11729 | PERL_ARGS_ASSERT_KEYWORD_PLUGIN_STANDARD; | |
11730 | PERL_UNUSED_CONTEXT; | |
11731 | PERL_UNUSED_ARG(keyword_ptr); | |
11732 | PERL_UNUSED_ARG(keyword_len); | |
11733 | PERL_UNUSED_ARG(op_ptr); | |
11734 | return KEYWORD_PLUGIN_DECLINE; | |
11735 | } | |
11736 | ||
78cdf107 | 11737 | #define parse_recdescent(g,p) S_parse_recdescent(aTHX_ g,p) |
e53d8f76 | 11738 | static void |
78cdf107 | 11739 | S_parse_recdescent(pTHX_ int gramtype, I32 fakeeof) |
a7aaec61 Z |
11740 | { |
11741 | SAVEI32(PL_lex_brackets); | |
11742 | if (PL_lex_brackets > 100) | |
11743 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
11744 | PL_lex_brackstack[PL_lex_brackets++] = XFAKEEOF; | |
78cdf107 Z |
11745 | SAVEI32(PL_lex_allbrackets); |
11746 | PL_lex_allbrackets = 0; | |
11747 | SAVEI8(PL_lex_fakeeof); | |
2dcac756 | 11748 | PL_lex_fakeeof = (U8)fakeeof; |
a7aaec61 Z |
11749 | if(yyparse(gramtype) && !PL_parser->error_count) |
11750 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11751 | } | |
11752 | ||
78cdf107 | 11753 | #define parse_recdescent_for_op(g,p) S_parse_recdescent_for_op(aTHX_ g,p) |
e53d8f76 | 11754 | static OP * |
78cdf107 | 11755 | S_parse_recdescent_for_op(pTHX_ int gramtype, I32 fakeeof) |
e53d8f76 Z |
11756 | { |
11757 | OP *o; | |
11758 | ENTER; | |
11759 | SAVEVPTR(PL_eval_root); | |
11760 | PL_eval_root = NULL; | |
78cdf107 | 11761 | parse_recdescent(gramtype, fakeeof); |
e53d8f76 Z |
11762 | o = PL_eval_root; |
11763 | LEAVE; | |
11764 | return o; | |
11765 | } | |
11766 | ||
78cdf107 Z |
11767 | #define parse_expr(p,f) S_parse_expr(aTHX_ p,f) |
11768 | static OP * | |
11769 | S_parse_expr(pTHX_ I32 fakeeof, U32 flags) | |
11770 | { | |
11771 | OP *exprop; | |
11772 | if (flags & ~PARSE_OPTIONAL) | |
11773 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_expr"); | |
11774 | exprop = parse_recdescent_for_op(GRAMEXPR, fakeeof); | |
11775 | if (!exprop && !(flags & PARSE_OPTIONAL)) { | |
11776 | if (!PL_parser->error_count) | |
11777 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11778 | exprop = newOP(OP_NULL, 0); | |
11779 | } | |
11780 | return exprop; | |
11781 | } | |
11782 | ||
11783 | /* | |
11784 | =for apidoc Amx|OP *|parse_arithexpr|U32 flags | |
11785 | ||
11786 | Parse a Perl arithmetic expression. This may contain operators of precedence | |
11787 | down to the bit shift operators. The expression must be followed (and thus | |
11788 | terminated) either by a comparison or lower-precedence operator or by | |
11789 | something that would normally terminate an expression such as semicolon. | |
11790 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11791 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11792 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11793 | the source of the code to be parsed and the lexical context for the | |
11794 | expression. | |
11795 | ||
11796 | The op tree representing the expression is returned. If an optional | |
11797 | expression is absent, a null pointer is returned, otherwise the pointer | |
11798 | will be non-null. | |
11799 | ||
11800 | If an error occurs in parsing or compilation, in most cases a valid op | |
11801 | tree is returned anyway. The error is reflected in the parser state, | |
11802 | normally resulting in a single exception at the top level of parsing | |
11803 | which covers all the compilation errors that occurred. Some compilation | |
11804 | errors, however, will throw an exception immediately. | |
11805 | ||
11806 | =cut | |
11807 | */ | |
11808 | ||
11809 | OP * | |
11810 | Perl_parse_arithexpr(pTHX_ U32 flags) | |
11811 | { | |
11812 | return parse_expr(LEX_FAKEEOF_COMPARE, flags); | |
11813 | } | |
11814 | ||
11815 | /* | |
11816 | =for apidoc Amx|OP *|parse_termexpr|U32 flags | |
11817 | ||
11818 | Parse a Perl term expression. This may contain operators of precedence | |
11819 | down to the assignment operators. The expression must be followed (and thus | |
11820 | terminated) either by a comma or lower-precedence operator or by | |
11821 | something that would normally terminate an expression such as semicolon. | |
11822 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11823 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11824 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11825 | the source of the code to be parsed and the lexical context for the | |
11826 | expression. | |
11827 | ||
11828 | The op tree representing the expression is returned. If an optional | |
11829 | expression is absent, a null pointer is returned, otherwise the pointer | |
11830 | will be non-null. | |
11831 | ||
11832 | If an error occurs in parsing or compilation, in most cases a valid op | |
11833 | tree is returned anyway. The error is reflected in the parser state, | |
11834 | normally resulting in a single exception at the top level of parsing | |
11835 | which covers all the compilation errors that occurred. Some compilation | |
11836 | errors, however, will throw an exception immediately. | |
11837 | ||
11838 | =cut | |
11839 | */ | |
11840 | ||
11841 | OP * | |
11842 | Perl_parse_termexpr(pTHX_ U32 flags) | |
11843 | { | |
11844 | return parse_expr(LEX_FAKEEOF_COMMA, flags); | |
11845 | } | |
11846 | ||
11847 | /* | |
11848 | =for apidoc Amx|OP *|parse_listexpr|U32 flags | |
11849 | ||
11850 | Parse a Perl list expression. This may contain operators of precedence | |
11851 | down to the comma operator. The expression must be followed (and thus | |
11852 | terminated) either by a low-precedence logic operator such as C<or> or by | |
11853 | something that would normally terminate an expression such as semicolon. | |
11854 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11855 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11856 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11857 | the source of the code to be parsed and the lexical context for the | |
11858 | expression. | |
11859 | ||
11860 | The op tree representing the expression is returned. If an optional | |
11861 | expression is absent, a null pointer is returned, otherwise the pointer | |
11862 | will be non-null. | |
11863 | ||
11864 | If an error occurs in parsing or compilation, in most cases a valid op | |
11865 | tree is returned anyway. The error is reflected in the parser state, | |
11866 | normally resulting in a single exception at the top level of parsing | |
11867 | which covers all the compilation errors that occurred. Some compilation | |
11868 | errors, however, will throw an exception immediately. | |
11869 | ||
11870 | =cut | |
11871 | */ | |
11872 | ||
11873 | OP * | |
11874 | Perl_parse_listexpr(pTHX_ U32 flags) | |
11875 | { | |
11876 | return parse_expr(LEX_FAKEEOF_LOWLOGIC, flags); | |
11877 | } | |
11878 | ||
11879 | /* | |
11880 | =for apidoc Amx|OP *|parse_fullexpr|U32 flags | |
11881 | ||
11882 | Parse a single complete Perl expression. This allows the full | |
11883 | expression grammar, including the lowest-precedence operators such | |
11884 | as C<or>. The expression must be followed (and thus terminated) by a | |
11885 | token that an expression would normally be terminated by: end-of-file, | |
11886 | closing bracketing punctuation, semicolon, or one of the keywords that | |
11887 | signals a postfix expression-statement modifier. If I<flags> includes | |
11888 | C<PARSE_OPTIONAL> then the expression is optional, otherwise it is | |
11889 | mandatory. It is up to the caller to ensure that the dynamic parser | |
11890 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11891 | the code to be parsed and the lexical context for the expression. | |
11892 | ||
11893 | The op tree representing the expression is returned. If an optional | |
11894 | expression is absent, a null pointer is returned, otherwise the pointer | |
11895 | will be non-null. | |
11896 | ||
11897 | If an error occurs in parsing or compilation, in most cases a valid op | |
11898 | tree is returned anyway. The error is reflected in the parser state, | |
11899 | normally resulting in a single exception at the top level of parsing | |
11900 | which covers all the compilation errors that occurred. Some compilation | |
11901 | errors, however, will throw an exception immediately. | |
11902 | ||
11903 | =cut | |
11904 | */ | |
11905 | ||
11906 | OP * | |
11907 | Perl_parse_fullexpr(pTHX_ U32 flags) | |
11908 | { | |
11909 | return parse_expr(LEX_FAKEEOF_NONEXPR, flags); | |
11910 | } | |
11911 | ||
e53d8f76 Z |
11912 | /* |
11913 | =for apidoc Amx|OP *|parse_block|U32 flags | |
11914 | ||
11915 | Parse a single complete Perl code block. This consists of an opening | |
11916 | brace, a sequence of statements, and a closing brace. The block | |
11917 | constitutes a lexical scope, so C<my> variables and various compile-time | |
11918 | effects can be contained within it. It is up to the caller to ensure | |
11919 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11920 | reflect the source of the code to be parsed and the lexical context for | |
11921 | the statement. | |
11922 | ||
11923 | The op tree representing the code block is returned. This is always a | |
11924 | real op, never a null pointer. It will normally be a C<lineseq> list, | |
11925 | including C<nextstate> or equivalent ops. No ops to construct any kind | |
11926 | of runtime scope are included by virtue of it being a block. | |
11927 | ||
11928 | If an error occurs in parsing or compilation, in most cases a valid op | |
11929 | tree (most likely null) is returned anyway. The error is reflected in | |
11930 | the parser state, normally resulting in a single exception at the top | |
11931 | level of parsing which covers all the compilation errors that occurred. | |
11932 | Some compilation errors, however, will throw an exception immediately. | |
11933 | ||
11934 | The I<flags> parameter is reserved for future use, and must always | |
11935 | be zero. | |
11936 | ||
11937 | =cut | |
11938 | */ | |
11939 | ||
11940 | OP * | |
11941 | Perl_parse_block(pTHX_ U32 flags) | |
11942 | { | |
11943 | if (flags) | |
11944 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_block"); | |
78cdf107 | 11945 | return parse_recdescent_for_op(GRAMBLOCK, LEX_FAKEEOF_NEVER); |
e53d8f76 Z |
11946 | } |
11947 | ||
1da4ca5f | 11948 | /* |
8359b381 Z |
11949 | =for apidoc Amx|OP *|parse_barestmt|U32 flags |
11950 | ||
11951 | Parse a single unadorned Perl statement. This may be a normal imperative | |
11952 | statement or a declaration that has compile-time effect. It does not | |
11953 | include any label or other affixture. It is up to the caller to ensure | |
11954 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11955 | reflect the source of the code to be parsed and the lexical context for | |
11956 | the statement. | |
11957 | ||
11958 | The op tree representing the statement is returned. This may be a | |
11959 | null pointer if the statement is null, for example if it was actually | |
11960 | a subroutine definition (which has compile-time side effects). If not | |
11961 | null, it will be ops directly implementing the statement, suitable to | |
11962 | pass to L</newSTATEOP>. It will not normally include a C<nextstate> or | |
11963 | equivalent op (except for those embedded in a scope contained entirely | |
11964 | within the statement). | |
11965 | ||
11966 | If an error occurs in parsing or compilation, in most cases a valid op | |
11967 | tree (most likely null) is returned anyway. The error is reflected in | |
11968 | the parser state, normally resulting in a single exception at the top | |
11969 | level of parsing which covers all the compilation errors that occurred. | |
11970 | Some compilation errors, however, will throw an exception immediately. | |
11971 | ||
11972 | The I<flags> parameter is reserved for future use, and must always | |
11973 | be zero. | |
11974 | ||
11975 | =cut | |
11976 | */ | |
11977 | ||
11978 | OP * | |
11979 | Perl_parse_barestmt(pTHX_ U32 flags) | |
11980 | { | |
11981 | if (flags) | |
11982 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_barestmt"); | |
78cdf107 | 11983 | return parse_recdescent_for_op(GRAMBARESTMT, LEX_FAKEEOF_NEVER); |
8359b381 Z |
11984 | } |
11985 | ||
11986 | /* | |
361d9b55 Z |
11987 | =for apidoc Amx|SV *|parse_label|U32 flags |
11988 | ||
11989 | Parse a single label, possibly optional, of the type that may prefix a | |
11990 | Perl statement. It is up to the caller to ensure that the dynamic parser | |
11991 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11992 | the code to be parsed. If I<flags> includes C<PARSE_OPTIONAL> then the | |
11993 | label is optional, otherwise it is mandatory. | |
11994 | ||
11995 | The name of the label is returned in the form of a fresh scalar. If an | |
11996 | optional label is absent, a null pointer is returned. | |
11997 | ||
11998 | If an error occurs in parsing, which can only occur if the label is | |
11999 | mandatory, a valid label is returned anyway. The error is reflected in | |
12000 | the parser state, normally resulting in a single exception at the top | |
12001 | level of parsing which covers all the compilation errors that occurred. | |
12002 | ||
12003 | =cut | |
12004 | */ | |
12005 | ||
12006 | SV * | |
12007 | Perl_parse_label(pTHX_ U32 flags) | |
12008 | { | |
12009 | if (flags & ~PARSE_OPTIONAL) | |
12010 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_label"); | |
12011 | if (PL_lex_state == LEX_KNOWNEXT) { | |
12012 | PL_parser->yychar = yylex(); | |
12013 | if (PL_parser->yychar == LABEL) { | |
5504e6cf FC |
12014 | char * const lpv = pl_yylval.pval; |
12015 | STRLEN llen = strlen(lpv); | |
361d9b55 | 12016 | PL_parser->yychar = YYEMPTY; |
5504e6cf | 12017 | return newSVpvn_flags(lpv, llen, lpv[llen+1] ? SVf_UTF8 : 0); |
361d9b55 Z |
12018 | } else { |
12019 | yyunlex(); | |
12020 | goto no_label; | |
12021 | } | |
12022 | } else { | |
12023 | char *s, *t; | |
361d9b55 Z |
12024 | STRLEN wlen, bufptr_pos; |
12025 | lex_read_space(0); | |
12026 | t = s = PL_bufptr; | |
5db1eb8d | 12027 | if (!isIDFIRST_lazy_if(s, UTF)) |
361d9b55 | 12028 | goto no_label; |
5db1eb8d | 12029 | t = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &wlen); |
361d9b55 Z |
12030 | if (word_takes_any_delimeter(s, wlen)) |
12031 | goto no_label; | |
12032 | bufptr_pos = s - SvPVX(PL_linestr); | |
12033 | PL_bufptr = t; | |
12034 | lex_read_space(LEX_KEEP_PREVIOUS); | |
12035 | t = PL_bufptr; | |
12036 | s = SvPVX(PL_linestr) + bufptr_pos; | |
12037 | if (t[0] == ':' && t[1] != ':') { | |
12038 | PL_oldoldbufptr = PL_oldbufptr; | |
12039 | PL_oldbufptr = s; | |
12040 | PL_bufptr = t+1; | |
5db1eb8d | 12041 | return newSVpvn_flags(s, wlen, UTF ? SVf_UTF8 : 0); |
361d9b55 Z |
12042 | } else { |
12043 | PL_bufptr = s; | |
12044 | no_label: | |
12045 | if (flags & PARSE_OPTIONAL) { | |
12046 | return NULL; | |
12047 | } else { | |
12048 | qerror(Perl_mess(aTHX_ "Parse error")); | |
12049 | return newSVpvs("x"); | |
12050 | } | |
12051 | } | |
12052 | } | |
12053 | } | |
12054 | ||
12055 | /* | |
28ac2b49 Z |
12056 | =for apidoc Amx|OP *|parse_fullstmt|U32 flags |
12057 | ||
12058 | Parse a single complete Perl statement. This may be a normal imperative | |
8359b381 | 12059 | statement or a declaration that has compile-time effect, and may include |
8e720305 | 12060 | optional labels. It is up to the caller to ensure that the dynamic |
28ac2b49 Z |
12061 | parser state (L</PL_parser> et al) is correctly set to reflect the source |
12062 | of the code to be parsed and the lexical context for the statement. | |
12063 | ||
12064 | The op tree representing the statement is returned. This may be a | |
12065 | null pointer if the statement is null, for example if it was actually | |
12066 | a subroutine definition (which has compile-time side effects). If not | |
12067 | null, it will be the result of a L</newSTATEOP> call, normally including | |
12068 | a C<nextstate> or equivalent op. | |
12069 | ||
12070 | If an error occurs in parsing or compilation, in most cases a valid op | |
12071 | tree (most likely null) is returned anyway. The error is reflected in | |
12072 | the parser state, normally resulting in a single exception at the top | |
12073 | level of parsing which covers all the compilation errors that occurred. | |
12074 | Some compilation errors, however, will throw an exception immediately. | |
12075 | ||
12076 | The I<flags> parameter is reserved for future use, and must always | |
12077 | be zero. | |
12078 | ||
12079 | =cut | |
12080 | */ | |
12081 | ||
12082 | OP * | |
12083 | Perl_parse_fullstmt(pTHX_ U32 flags) | |
12084 | { | |
28ac2b49 Z |
12085 | if (flags) |
12086 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_fullstmt"); | |
78cdf107 | 12087 | return parse_recdescent_for_op(GRAMFULLSTMT, LEX_FAKEEOF_NEVER); |
28ac2b49 Z |
12088 | } |
12089 | ||
07ffcb73 Z |
12090 | /* |
12091 | =for apidoc Amx|OP *|parse_stmtseq|U32 flags | |
12092 | ||
12093 | Parse a sequence of zero or more Perl statements. These may be normal | |
12094 | imperative statements, including optional labels, or declarations | |
12095 | that have compile-time effect, or any mixture thereof. The statement | |
12096 | sequence ends when a closing brace or end-of-file is encountered in a | |
12097 | place where a new statement could have validly started. It is up to | |
12098 | the caller to ensure that the dynamic parser state (L</PL_parser> et al) | |
12099 | is correctly set to reflect the source of the code to be parsed and the | |
12100 | lexical context for the statements. | |
12101 | ||
12102 | The op tree representing the statement sequence is returned. This may | |
12103 | be a null pointer if the statements were all null, for example if there | |
12104 | were no statements or if there were only subroutine definitions (which | |
12105 | have compile-time side effects). If not null, it will be a C<lineseq> | |
12106 | list, normally including C<nextstate> or equivalent ops. | |
12107 | ||
12108 | If an error occurs in parsing or compilation, in most cases a valid op | |
12109 | tree is returned anyway. The error is reflected in the parser state, | |
12110 | normally resulting in a single exception at the top level of parsing | |
12111 | which covers all the compilation errors that occurred. Some compilation | |
12112 | errors, however, will throw an exception immediately. | |
12113 | ||
12114 | The I<flags> parameter is reserved for future use, and must always | |
12115 | be zero. | |
12116 | ||
12117 | =cut | |
12118 | */ | |
12119 | ||
12120 | OP * | |
12121 | Perl_parse_stmtseq(pTHX_ U32 flags) | |
12122 | { | |
12123 | OP *stmtseqop; | |
e53d8f76 | 12124 | I32 c; |
07ffcb73 | 12125 | if (flags) |
78cdf107 Z |
12126 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_stmtseq"); |
12127 | stmtseqop = parse_recdescent_for_op(GRAMSTMTSEQ, LEX_FAKEEOF_CLOSING); | |
e53d8f76 Z |
12128 | c = lex_peek_unichar(0); |
12129 | if (c != -1 && c != /*{*/'}') | |
07ffcb73 | 12130 | qerror(Perl_mess(aTHX_ "Parse error")); |
07ffcb73 Z |
12131 | return stmtseqop; |
12132 | } | |
12133 | ||
28ac2b49 | 12134 | /* |
1da4ca5f NC |
12135 | * Local variables: |
12136 | * c-indentation-style: bsd | |
12137 | * c-basic-offset: 4 | |
14d04a33 | 12138 | * indent-tabs-mode: nil |
1da4ca5f NC |
12139 | * End: |
12140 | * | |
14d04a33 | 12141 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 12142 | */ |