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 | ||
0bd48802 | 113 | static const char 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" }, | |
5db1eb8d | 361 | { LABEL, TOKENTYPE_OPVAL, "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; |
734ab321 BF |
547 | for (t = PL_oldoldbufptr; (isALNUM_lazy_if(t,UTF) || *t == ':'); |
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); |
2f9285f8 | 787 | |
e3abe207 DM |
788 | Safefree(parser->lex_brackstack); |
789 | Safefree(parser->lex_casestack); | |
d794b522 | 790 | Safefree(parser->lex_shared); |
e3abe207 DM |
791 | PL_parser = parser->old_parser; |
792 | Safefree(parser); | |
793 | } | |
794 | ||
795 | ||
ffb4593c | 796 | /* |
f0e67a1d Z |
797 | =for apidoc AmxU|SV *|PL_parser-E<gt>linestr |
798 | ||
799 | Buffer scalar containing the chunk currently under consideration of the | |
800 | text currently being lexed. This is always a plain string scalar (for | |
801 | which C<SvPOK> is true). It is not intended to be used as a scalar by | |
802 | normal scalar means; instead refer to the buffer directly by the pointer | |
803 | variables described below. | |
804 | ||
805 | The lexer maintains various C<char*> pointers to things in the | |
806 | C<PL_parser-E<gt>linestr> buffer. If C<PL_parser-E<gt>linestr> is ever | |
807 | reallocated, all of these pointers must be updated. Don't attempt to | |
808 | do this manually, but rather use L</lex_grow_linestr> if you need to | |
809 | reallocate the buffer. | |
810 | ||
811 | The content of the text chunk in the buffer is commonly exactly one | |
812 | complete line of input, up to and including a newline terminator, | |
813 | but there are situations where it is otherwise. The octets of the | |
814 | buffer may be intended to be interpreted as either UTF-8 or Latin-1. | |
815 | The function L</lex_bufutf8> tells you which. Do not use the C<SvUTF8> | |
816 | flag on this scalar, which may disagree with it. | |
817 | ||
818 | For direct examination of the buffer, the variable | |
819 | L</PL_parser-E<gt>bufend> points to the end of the buffer. The current | |
820 | lexing position is pointed to by L</PL_parser-E<gt>bufptr>. Direct use | |
821 | of these pointers is usually preferable to examination of the scalar | |
822 | through normal scalar means. | |
823 | ||
824 | =for apidoc AmxU|char *|PL_parser-E<gt>bufend | |
825 | ||
826 | Direct pointer to the end of the chunk of text currently being lexed, the | |
827 | end of the lexer buffer. This is equal to C<SvPVX(PL_parser-E<gt>linestr) | |
828 | + SvCUR(PL_parser-E<gt>linestr)>. A NUL character (zero octet) is | |
829 | always located at the end of the buffer, and does not count as part of | |
830 | the buffer's contents. | |
831 | ||
832 | =for apidoc AmxU|char *|PL_parser-E<gt>bufptr | |
833 | ||
834 | Points to the current position of lexing inside the lexer buffer. | |
835 | Characters around this point may be freely examined, within | |
836 | the range delimited by C<SvPVX(L</PL_parser-E<gt>linestr>)> and | |
837 | L</PL_parser-E<gt>bufend>. The octets of the buffer may be intended to be | |
838 | interpreted as either UTF-8 or Latin-1, as indicated by L</lex_bufutf8>. | |
839 | ||
840 | Lexing code (whether in the Perl core or not) moves this pointer past | |
841 | the characters that it consumes. It is also expected to perform some | |
842 | bookkeeping whenever a newline character is consumed. This movement | |
843 | can be more conveniently performed by the function L</lex_read_to>, | |
844 | which handles newlines appropriately. | |
845 | ||
846 | Interpretation of the buffer's octets can be abstracted out by | |
847 | using the slightly higher-level functions L</lex_peek_unichar> and | |
848 | L</lex_read_unichar>. | |
849 | ||
850 | =for apidoc AmxU|char *|PL_parser-E<gt>linestart | |
851 | ||
852 | Points to the start of the current line inside the lexer buffer. | |
853 | This is useful for indicating at which column an error occurred, and | |
854 | not much else. This must be updated by any lexing code that consumes | |
855 | a newline; the function L</lex_read_to> handles this detail. | |
856 | ||
857 | =cut | |
858 | */ | |
859 | ||
860 | /* | |
861 | =for apidoc Amx|bool|lex_bufutf8 | |
862 | ||
863 | Indicates whether the octets in the lexer buffer | |
864 | (L</PL_parser-E<gt>linestr>) should be interpreted as the UTF-8 encoding | |
865 | of Unicode characters. If not, they should be interpreted as Latin-1 | |
866 | characters. This is analogous to the C<SvUTF8> flag for scalars. | |
867 | ||
868 | In UTF-8 mode, it is not guaranteed that the lexer buffer actually | |
869 | contains valid UTF-8. Lexing code must be robust in the face of invalid | |
870 | encoding. | |
871 | ||
872 | The actual C<SvUTF8> flag of the L</PL_parser-E<gt>linestr> scalar | |
873 | is significant, but not the whole story regarding the input character | |
874 | encoding. Normally, when a file is being read, the scalar contains octets | |
875 | and its C<SvUTF8> flag is off, but the octets should be interpreted as | |
876 | UTF-8 if the C<use utf8> pragma is in effect. During a string eval, | |
877 | however, the scalar may have the C<SvUTF8> flag on, and in this case its | |
878 | octets should be interpreted as UTF-8 unless the C<use bytes> pragma | |
879 | is in effect. This logic may change in the future; use this function | |
880 | instead of implementing the logic yourself. | |
881 | ||
882 | =cut | |
883 | */ | |
884 | ||
885 | bool | |
886 | Perl_lex_bufutf8(pTHX) | |
887 | { | |
888 | return UTF; | |
889 | } | |
890 | ||
891 | /* | |
892 | =for apidoc Amx|char *|lex_grow_linestr|STRLEN len | |
893 | ||
894 | Reallocates the lexer buffer (L</PL_parser-E<gt>linestr>) to accommodate | |
895 | at least I<len> octets (including terminating NUL). Returns a | |
896 | pointer to the reallocated buffer. This is necessary before making | |
897 | any direct modification of the buffer that would increase its length. | |
898 | L</lex_stuff_pvn> provides a more convenient way to insert text into | |
899 | the buffer. | |
900 | ||
901 | Do not use C<SvGROW> or C<sv_grow> directly on C<PL_parser-E<gt>linestr>; | |
902 | this function updates all of the lexer's variables that point directly | |
903 | into the buffer. | |
904 | ||
905 | =cut | |
906 | */ | |
907 | ||
908 | char * | |
909 | Perl_lex_grow_linestr(pTHX_ STRLEN len) | |
910 | { | |
911 | SV *linestr; | |
912 | char *buf; | |
913 | STRLEN bufend_pos, bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
c7641931 | 914 | STRLEN linestart_pos, last_uni_pos, last_lop_pos, re_eval_start_pos; |
f0e67a1d Z |
915 | linestr = PL_parser->linestr; |
916 | buf = SvPVX(linestr); | |
917 | if (len <= SvLEN(linestr)) | |
918 | return buf; | |
919 | bufend_pos = PL_parser->bufend - buf; | |
920 | bufptr_pos = PL_parser->bufptr - buf; | |
921 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
922 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
923 | linestart_pos = PL_parser->linestart - buf; | |
924 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
925 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
3328ab5a FC |
926 | re_eval_start_pos = PL_parser->lex_shared->re_eval_start ? |
927 | PL_parser->lex_shared->re_eval_start - buf : 0; | |
c7641931 | 928 | |
f0e67a1d | 929 | buf = sv_grow(linestr, len); |
c7641931 | 930 | |
f0e67a1d Z |
931 | PL_parser->bufend = buf + bufend_pos; |
932 | PL_parser->bufptr = buf + bufptr_pos; | |
933 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
934 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
935 | PL_parser->linestart = buf + linestart_pos; | |
936 | if (PL_parser->last_uni) | |
937 | PL_parser->last_uni = buf + last_uni_pos; | |
938 | if (PL_parser->last_lop) | |
939 | PL_parser->last_lop = buf + last_lop_pos; | |
3328ab5a FC |
940 | if (PL_parser->lex_shared->re_eval_start) |
941 | PL_parser->lex_shared->re_eval_start = buf + re_eval_start_pos; | |
f0e67a1d Z |
942 | return buf; |
943 | } | |
944 | ||
945 | /* | |
83aa740e | 946 | =for apidoc Amx|void|lex_stuff_pvn|const char *pv|STRLEN len|U32 flags |
f0e67a1d Z |
947 | |
948 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
949 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
950 | reallocating the buffer if necessary. This means that lexing code that | |
951 | runs later will see the characters as if they had appeared in the input. | |
952 | It is not recommended to do this as part of normal parsing, and most | |
953 | uses of this facility run the risk of the inserted characters being | |
954 | interpreted in an unintended manner. | |
955 | ||
956 | The string to be inserted is represented by I<len> octets starting | |
957 | at I<pv>. These octets are interpreted as either UTF-8 or Latin-1, | |
958 | according to whether the C<LEX_STUFF_UTF8> flag is set in I<flags>. | |
959 | The characters are recoded for the lexer buffer, according to how the | |
960 | buffer is currently being interpreted (L</lex_bufutf8>). If a string | |
9dcc53ea | 961 | to be inserted is available as a Perl scalar, the L</lex_stuff_sv> |
f0e67a1d Z |
962 | function is more convenient. |
963 | ||
964 | =cut | |
965 | */ | |
966 | ||
967 | void | |
83aa740e | 968 | Perl_lex_stuff_pvn(pTHX_ const char *pv, STRLEN len, U32 flags) |
f0e67a1d | 969 | { |
749123ff | 970 | dVAR; |
f0e67a1d Z |
971 | char *bufptr; |
972 | PERL_ARGS_ASSERT_LEX_STUFF_PVN; | |
973 | if (flags & ~(LEX_STUFF_UTF8)) | |
974 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_pvn"); | |
975 | if (UTF) { | |
976 | if (flags & LEX_STUFF_UTF8) { | |
977 | goto plain_copy; | |
978 | } else { | |
979 | STRLEN highhalf = 0; | |
83aa740e | 980 | const char *p, *e = pv+len; |
f0e67a1d Z |
981 | for (p = pv; p != e; p++) |
982 | highhalf += !!(((U8)*p) & 0x80); | |
983 | if (!highhalf) | |
984 | goto plain_copy; | |
985 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len+highhalf); | |
986 | bufptr = PL_parser->bufptr; | |
987 | Move(bufptr, bufptr+len+highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
988 | SvCUR_set(PL_parser->linestr, |
989 | SvCUR(PL_parser->linestr) + len+highhalf); | |
f0e67a1d Z |
990 | PL_parser->bufend += len+highhalf; |
991 | for (p = pv; p != e; p++) { | |
992 | U8 c = (U8)*p; | |
993 | if (c & 0x80) { | |
994 | *bufptr++ = (char)(0xc0 | (c >> 6)); | |
995 | *bufptr++ = (char)(0x80 | (c & 0x3f)); | |
996 | } else { | |
997 | *bufptr++ = (char)c; | |
998 | } | |
999 | } | |
1000 | } | |
1001 | } else { | |
1002 | if (flags & LEX_STUFF_UTF8) { | |
1003 | STRLEN highhalf = 0; | |
83aa740e | 1004 | const char *p, *e = pv+len; |
f0e67a1d Z |
1005 | for (p = pv; p != e; p++) { |
1006 | U8 c = (U8)*p; | |
1007 | if (c >= 0xc4) { | |
1008 | Perl_croak(aTHX_ "Lexing code attempted to stuff " | |
1009 | "non-Latin-1 character into Latin-1 input"); | |
1010 | } else if (c >= 0xc2 && p+1 != e && | |
1011 | (((U8)p[1]) & 0xc0) == 0x80) { | |
1012 | p++; | |
1013 | highhalf++; | |
1014 | } else if (c >= 0x80) { | |
1015 | /* malformed UTF-8 */ | |
1016 | ENTER; | |
1017 | SAVESPTR(PL_warnhook); | |
1018 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
1019 | utf8n_to_uvuni((U8*)p, e-p, NULL, 0); | |
1020 | LEAVE; | |
1021 | } | |
1022 | } | |
1023 | if (!highhalf) | |
1024 | goto plain_copy; | |
1025 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len-highhalf); | |
1026 | bufptr = PL_parser->bufptr; | |
1027 | Move(bufptr, bufptr+len-highhalf, PL_parser->bufend+1-bufptr, char); | |
255fdf19 Z |
1028 | SvCUR_set(PL_parser->linestr, |
1029 | SvCUR(PL_parser->linestr) + len-highhalf); | |
f0e67a1d Z |
1030 | PL_parser->bufend += len-highhalf; |
1031 | for (p = pv; p != e; p++) { | |
1032 | U8 c = (U8)*p; | |
1033 | if (c & 0x80) { | |
1034 | *bufptr++ = (char)(((c & 0x3) << 6) | (p[1] & 0x3f)); | |
1035 | p++; | |
1036 | } else { | |
1037 | *bufptr++ = (char)c; | |
1038 | } | |
1039 | } | |
1040 | } else { | |
1041 | plain_copy: | |
1042 | lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len); | |
1043 | bufptr = PL_parser->bufptr; | |
1044 | Move(bufptr, bufptr+len, PL_parser->bufend+1-bufptr, char); | |
255fdf19 | 1045 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) + len); |
f0e67a1d Z |
1046 | PL_parser->bufend += len; |
1047 | Copy(pv, bufptr, len, char); | |
1048 | } | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /* | |
9dcc53ea Z |
1053 | =for apidoc Amx|void|lex_stuff_pv|const char *pv|U32 flags |
1054 | ||
1055 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1056 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1057 | reallocating the buffer if necessary. This means that lexing code that | |
1058 | runs later will see the characters as if they had appeared in the input. | |
1059 | It is not recommended to do this as part of normal parsing, and most | |
1060 | uses of this facility run the risk of the inserted characters being | |
1061 | interpreted in an unintended manner. | |
1062 | ||
1063 | The string to be inserted is represented by octets starting at I<pv> | |
1064 | and continuing to the first nul. These octets are interpreted as either | |
1065 | UTF-8 or Latin-1, according to whether the C<LEX_STUFF_UTF8> flag is set | |
1066 | in I<flags>. The characters are recoded for the lexer buffer, according | |
1067 | to how the buffer is currently being interpreted (L</lex_bufutf8>). | |
1068 | If it is not convenient to nul-terminate a string to be inserted, the | |
1069 | L</lex_stuff_pvn> function is more appropriate. | |
1070 | ||
1071 | =cut | |
1072 | */ | |
1073 | ||
1074 | void | |
1075 | Perl_lex_stuff_pv(pTHX_ const char *pv, U32 flags) | |
1076 | { | |
1077 | PERL_ARGS_ASSERT_LEX_STUFF_PV; | |
1078 | lex_stuff_pvn(pv, strlen(pv), flags); | |
1079 | } | |
1080 | ||
1081 | /* | |
f0e67a1d Z |
1082 | =for apidoc Amx|void|lex_stuff_sv|SV *sv|U32 flags |
1083 | ||
1084 | Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>), | |
1085 | immediately after the current lexing point (L</PL_parser-E<gt>bufptr>), | |
1086 | reallocating the buffer if necessary. This means that lexing code that | |
1087 | runs later will see the characters as if they had appeared in the input. | |
1088 | It is not recommended to do this as part of normal parsing, and most | |
1089 | uses of this facility run the risk of the inserted characters being | |
1090 | interpreted in an unintended manner. | |
1091 | ||
1092 | The string to be inserted is the string value of I<sv>. The characters | |
1093 | are recoded for the lexer buffer, according to how the buffer is currently | |
9dcc53ea | 1094 | being interpreted (L</lex_bufutf8>). If a string to be inserted is |
f0e67a1d Z |
1095 | not already a Perl scalar, the L</lex_stuff_pvn> function avoids the |
1096 | need to construct a scalar. | |
1097 | ||
1098 | =cut | |
1099 | */ | |
1100 | ||
1101 | void | |
1102 | Perl_lex_stuff_sv(pTHX_ SV *sv, U32 flags) | |
1103 | { | |
1104 | char *pv; | |
1105 | STRLEN len; | |
1106 | PERL_ARGS_ASSERT_LEX_STUFF_SV; | |
1107 | if (flags) | |
1108 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_sv"); | |
1109 | pv = SvPV(sv, len); | |
1110 | lex_stuff_pvn(pv, len, flags | (SvUTF8(sv) ? LEX_STUFF_UTF8 : 0)); | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | =for apidoc Amx|void|lex_unstuff|char *ptr | |
1115 | ||
1116 | Discards text about to be lexed, from L</PL_parser-E<gt>bufptr> up to | |
1117 | I<ptr>. Text following I<ptr> will be moved, and the buffer shortened. | |
1118 | This hides the discarded text from any lexing code that runs later, | |
1119 | as if the text had never appeared. | |
1120 | ||
1121 | This is not the normal way to consume lexed text. For that, use | |
1122 | L</lex_read_to>. | |
1123 | ||
1124 | =cut | |
1125 | */ | |
1126 | ||
1127 | void | |
1128 | Perl_lex_unstuff(pTHX_ char *ptr) | |
1129 | { | |
1130 | char *buf, *bufend; | |
1131 | STRLEN unstuff_len; | |
1132 | PERL_ARGS_ASSERT_LEX_UNSTUFF; | |
1133 | buf = PL_parser->bufptr; | |
1134 | if (ptr < buf) | |
1135 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1136 | if (ptr == buf) | |
1137 | return; | |
1138 | bufend = PL_parser->bufend; | |
1139 | if (ptr > bufend) | |
1140 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff"); | |
1141 | unstuff_len = ptr - buf; | |
1142 | Move(ptr, buf, bufend+1-ptr, char); | |
1143 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - unstuff_len); | |
1144 | PL_parser->bufend = bufend - unstuff_len; | |
1145 | } | |
1146 | ||
1147 | /* | |
1148 | =for apidoc Amx|void|lex_read_to|char *ptr | |
1149 | ||
1150 | Consume text in the lexer buffer, from L</PL_parser-E<gt>bufptr> up | |
1151 | to I<ptr>. This advances L</PL_parser-E<gt>bufptr> to match I<ptr>, | |
1152 | performing the correct bookkeeping whenever a newline character is passed. | |
1153 | This is the normal way to consume lexed text. | |
1154 | ||
1155 | Interpretation of the buffer's octets can be abstracted out by | |
1156 | using the slightly higher-level functions L</lex_peek_unichar> and | |
1157 | L</lex_read_unichar>. | |
1158 | ||
1159 | =cut | |
1160 | */ | |
1161 | ||
1162 | void | |
1163 | Perl_lex_read_to(pTHX_ char *ptr) | |
1164 | { | |
1165 | char *s; | |
1166 | PERL_ARGS_ASSERT_LEX_READ_TO; | |
1167 | s = PL_parser->bufptr; | |
1168 | if (ptr < s || ptr > PL_parser->bufend) | |
1169 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_to"); | |
1170 | for (; s != ptr; s++) | |
1171 | if (*s == '\n') { | |
83944c01 | 1172 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
1173 | PL_parser->linestart = s+1; |
1174 | } | |
1175 | PL_parser->bufptr = ptr; | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | =for apidoc Amx|void|lex_discard_to|char *ptr | |
1180 | ||
1181 | Discards the first part of the L</PL_parser-E<gt>linestr> buffer, | |
1182 | up to I<ptr>. The remaining content of the buffer will be moved, and | |
1183 | all pointers into the buffer updated appropriately. I<ptr> must not | |
1184 | be later in the buffer than the position of L</PL_parser-E<gt>bufptr>: | |
1185 | it is not permitted to discard text that has yet to be lexed. | |
1186 | ||
1187 | Normally it is not necessarily to do this directly, because it suffices to | |
1188 | use the implicit discarding behaviour of L</lex_next_chunk> and things | |
1189 | based on it. However, if a token stretches across multiple lines, | |
1f317c95 | 1190 | and the lexing code has kept multiple lines of text in the buffer for |
f0e67a1d Z |
1191 | that purpose, then after completion of the token it would be wise to |
1192 | explicitly discard the now-unneeded earlier lines, to avoid future | |
1193 | multi-line tokens growing the buffer without bound. | |
1194 | ||
1195 | =cut | |
1196 | */ | |
1197 | ||
1198 | void | |
1199 | Perl_lex_discard_to(pTHX_ char *ptr) | |
1200 | { | |
1201 | char *buf; | |
1202 | STRLEN discard_len; | |
1203 | PERL_ARGS_ASSERT_LEX_DISCARD_TO; | |
1204 | buf = SvPVX(PL_parser->linestr); | |
1205 | if (ptr < buf) | |
1206 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1207 | if (ptr == buf) | |
1208 | return; | |
1209 | if (ptr > PL_parser->bufptr) | |
1210 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to"); | |
1211 | discard_len = ptr - buf; | |
1212 | if (PL_parser->oldbufptr < ptr) | |
1213 | PL_parser->oldbufptr = ptr; | |
1214 | if (PL_parser->oldoldbufptr < ptr) | |
1215 | PL_parser->oldoldbufptr = ptr; | |
1216 | if (PL_parser->last_uni && PL_parser->last_uni < ptr) | |
1217 | PL_parser->last_uni = NULL; | |
1218 | if (PL_parser->last_lop && PL_parser->last_lop < ptr) | |
1219 | PL_parser->last_lop = NULL; | |
1220 | Move(ptr, buf, PL_parser->bufend+1-ptr, char); | |
1221 | SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - discard_len); | |
1222 | PL_parser->bufend -= discard_len; | |
1223 | PL_parser->bufptr -= discard_len; | |
1224 | PL_parser->oldbufptr -= discard_len; | |
1225 | PL_parser->oldoldbufptr -= discard_len; | |
1226 | if (PL_parser->last_uni) | |
1227 | PL_parser->last_uni -= discard_len; | |
1228 | if (PL_parser->last_lop) | |
1229 | PL_parser->last_lop -= discard_len; | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | =for apidoc Amx|bool|lex_next_chunk|U32 flags | |
1234 | ||
1235 | Reads in the next chunk of text to be lexed, appending it to | |
1236 | L</PL_parser-E<gt>linestr>. This should be called when lexing code has | |
1237 | looked to the end of the current chunk and wants to know more. It is | |
1238 | usual, but not necessary, for lexing to have consumed the entirety of | |
1239 | the current chunk at this time. | |
1240 | ||
1241 | If L</PL_parser-E<gt>bufptr> is pointing to the very end of the current | |
1242 | chunk (i.e., the current chunk has been entirely consumed), normally the | |
1243 | current chunk will be discarded at the same time that the new chunk is | |
1244 | read in. If I<flags> includes C<LEX_KEEP_PREVIOUS>, the current chunk | |
1245 | will not be discarded. If the current chunk has not been entirely | |
1246 | consumed, then it will not be discarded regardless of the flag. | |
1247 | ||
1248 | Returns true if some new text was added to the buffer, or false if the | |
1249 | buffer has reached the end of the input text. | |
1250 | ||
1251 | =cut | |
1252 | */ | |
1253 | ||
1254 | #define LEX_FAKE_EOF 0x80000000 | |
112d1284 | 1255 | #define LEX_NO_TERM 0x40000000 |
f0e67a1d Z |
1256 | |
1257 | bool | |
1258 | Perl_lex_next_chunk(pTHX_ U32 flags) | |
1259 | { | |
1260 | SV *linestr; | |
1261 | char *buf; | |
1262 | STRLEN old_bufend_pos, new_bufend_pos; | |
1263 | STRLEN bufptr_pos, oldbufptr_pos, oldoldbufptr_pos; | |
1264 | STRLEN linestart_pos, last_uni_pos, last_lop_pos; | |
17cc9359 | 1265 | bool got_some_for_debugger = 0; |
f0e67a1d | 1266 | bool got_some; |
112d1284 | 1267 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_FAKE_EOF|LEX_NO_TERM)) |
f0e67a1d | 1268 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_next_chunk"); |
f0e67a1d Z |
1269 | linestr = PL_parser->linestr; |
1270 | buf = SvPVX(linestr); | |
1271 | if (!(flags & LEX_KEEP_PREVIOUS) && | |
1272 | PL_parser->bufptr == PL_parser->bufend) { | |
1273 | old_bufend_pos = bufptr_pos = oldbufptr_pos = oldoldbufptr_pos = 0; | |
1274 | linestart_pos = 0; | |
1275 | if (PL_parser->last_uni != PL_parser->bufend) | |
1276 | PL_parser->last_uni = NULL; | |
1277 | if (PL_parser->last_lop != PL_parser->bufend) | |
1278 | PL_parser->last_lop = NULL; | |
1279 | last_uni_pos = last_lop_pos = 0; | |
1280 | *buf = 0; | |
1281 | SvCUR(linestr) = 0; | |
1282 | } else { | |
1283 | old_bufend_pos = PL_parser->bufend - buf; | |
1284 | bufptr_pos = PL_parser->bufptr - buf; | |
1285 | oldbufptr_pos = PL_parser->oldbufptr - buf; | |
1286 | oldoldbufptr_pos = PL_parser->oldoldbufptr - buf; | |
1287 | linestart_pos = PL_parser->linestart - buf; | |
1288 | last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
1289 | last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
1290 | } | |
1291 | if (flags & LEX_FAKE_EOF) { | |
1292 | goto eof; | |
60d63348 | 1293 | } else if (!PL_parser->rsfp && !PL_parser->filtered) { |
f0e67a1d Z |
1294 | got_some = 0; |
1295 | } else if (filter_gets(linestr, old_bufend_pos)) { | |
1296 | got_some = 1; | |
17cc9359 | 1297 | got_some_for_debugger = 1; |
112d1284 FC |
1298 | } else if (flags & LEX_NO_TERM) { |
1299 | got_some = 0; | |
f0e67a1d | 1300 | } else { |
580561a3 Z |
1301 | if (!SvPOK(linestr)) /* can get undefined by filter_gets */ |
1302 | sv_setpvs(linestr, ""); | |
f0e67a1d Z |
1303 | eof: |
1304 | /* End of real input. Close filehandle (unless it was STDIN), | |
1305 | * then add implicit termination. | |
1306 | */ | |
87606032 | 1307 | if (PL_parser->lex_flags & LEX_DONT_CLOSE_RSFP) |
f0e67a1d Z |
1308 | PerlIO_clearerr(PL_parser->rsfp); |
1309 | else if (PL_parser->rsfp) | |
1310 | (void)PerlIO_close(PL_parser->rsfp); | |
1311 | PL_parser->rsfp = NULL; | |
60d63348 | 1312 | PL_parser->in_pod = PL_parser->filtered = 0; |
f0e67a1d Z |
1313 | #ifdef PERL_MAD |
1314 | if (PL_madskills && !PL_in_eval && (PL_minus_p || PL_minus_n)) | |
1315 | PL_faketokens = 1; | |
1316 | #endif | |
1317 | if (!PL_in_eval && PL_minus_p) { | |
1318 | sv_catpvs(linestr, | |
1319 | /*{*/";}continue{print or die qq(-p destination: $!\\n);}"); | |
1320 | PL_minus_n = PL_minus_p = 0; | |
1321 | } else if (!PL_in_eval && PL_minus_n) { | |
1322 | sv_catpvs(linestr, /*{*/";}"); | |
1323 | PL_minus_n = 0; | |
1324 | } else | |
1325 | sv_catpvs(linestr, ";"); | |
1326 | got_some = 1; | |
1327 | } | |
1328 | buf = SvPVX(linestr); | |
1329 | new_bufend_pos = SvCUR(linestr); | |
1330 | PL_parser->bufend = buf + new_bufend_pos; | |
1331 | PL_parser->bufptr = buf + bufptr_pos; | |
1332 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
1333 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
1334 | PL_parser->linestart = buf + linestart_pos; | |
1335 | if (PL_parser->last_uni) | |
1336 | PL_parser->last_uni = buf + last_uni_pos; | |
1337 | if (PL_parser->last_lop) | |
1338 | PL_parser->last_lop = buf + last_lop_pos; | |
17cc9359 | 1339 | if (got_some_for_debugger && (PERLDB_LINE || PERLDB_SAVESRC) && |
f0e67a1d Z |
1340 | PL_curstash != PL_debstash) { |
1341 | /* debugger active and we're not compiling the debugger code, | |
1342 | * so store the line into the debugger's array of lines | |
1343 | */ | |
1344 | update_debugger_info(NULL, buf+old_bufend_pos, | |
1345 | new_bufend_pos-old_bufend_pos); | |
1346 | } | |
1347 | return got_some; | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | =for apidoc Amx|I32|lex_peek_unichar|U32 flags | |
1352 | ||
1353 | Looks ahead one (Unicode) character in the text currently being lexed. | |
1354 | Returns the codepoint (unsigned integer value) of the next character, | |
1355 | or -1 if lexing has reached the end of the input text. To consume the | |
1356 | peeked character, use L</lex_read_unichar>. | |
1357 | ||
1358 | If the next character is in (or extends into) the next chunk of input | |
1359 | text, the next chunk will be read in. Normally the current chunk will be | |
1360 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1361 | then the current chunk will not be discarded. | |
1362 | ||
1363 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1364 | is encountered, an exception is generated. | |
1365 | ||
1366 | =cut | |
1367 | */ | |
1368 | ||
1369 | I32 | |
1370 | Perl_lex_peek_unichar(pTHX_ U32 flags) | |
1371 | { | |
749123ff | 1372 | dVAR; |
f0e67a1d Z |
1373 | char *s, *bufend; |
1374 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1375 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_peek_unichar"); | |
1376 | s = PL_parser->bufptr; | |
1377 | bufend = PL_parser->bufend; | |
1378 | if (UTF) { | |
1379 | U8 head; | |
1380 | I32 unichar; | |
1381 | STRLEN len, retlen; | |
1382 | if (s == bufend) { | |
1383 | if (!lex_next_chunk(flags)) | |
1384 | return -1; | |
1385 | s = PL_parser->bufptr; | |
1386 | bufend = PL_parser->bufend; | |
1387 | } | |
1388 | head = (U8)*s; | |
1389 | if (!(head & 0x80)) | |
1390 | return head; | |
1391 | if (head & 0x40) { | |
1392 | len = PL_utf8skip[head]; | |
1393 | while ((STRLEN)(bufend-s) < len) { | |
1394 | if (!lex_next_chunk(flags | LEX_KEEP_PREVIOUS)) | |
1395 | break; | |
1396 | s = PL_parser->bufptr; | |
1397 | bufend = PL_parser->bufend; | |
1398 | } | |
1399 | } | |
1400 | unichar = utf8n_to_uvuni((U8*)s, bufend-s, &retlen, UTF8_CHECK_ONLY); | |
1401 | if (retlen == (STRLEN)-1) { | |
1402 | /* malformed UTF-8 */ | |
1403 | ENTER; | |
1404 | SAVESPTR(PL_warnhook); | |
1405 | PL_warnhook = PERL_WARNHOOK_FATAL; | |
1406 | utf8n_to_uvuni((U8*)s, bufend-s, NULL, 0); | |
1407 | LEAVE; | |
1408 | } | |
1409 | return unichar; | |
1410 | } else { | |
1411 | if (s == bufend) { | |
1412 | if (!lex_next_chunk(flags)) | |
1413 | return -1; | |
1414 | s = PL_parser->bufptr; | |
1415 | } | |
1416 | return (U8)*s; | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | =for apidoc Amx|I32|lex_read_unichar|U32 flags | |
1422 | ||
1423 | Reads the next (Unicode) character in the text currently being lexed. | |
1424 | Returns the codepoint (unsigned integer value) of the character read, | |
1425 | and moves L</PL_parser-E<gt>bufptr> past the character, or returns -1 | |
1426 | if lexing has reached the end of the input text. To non-destructively | |
1427 | examine the next character, use L</lex_peek_unichar> instead. | |
1428 | ||
1429 | If the next character is in (or extends into) the next chunk of input | |
1430 | text, the next chunk will be read in. Normally the current chunk will be | |
1431 | discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> | |
1432 | then the current chunk will not be discarded. | |
1433 | ||
1434 | If the input is being interpreted as UTF-8 and a UTF-8 encoding error | |
1435 | is encountered, an exception is generated. | |
1436 | ||
1437 | =cut | |
1438 | */ | |
1439 | ||
1440 | I32 | |
1441 | Perl_lex_read_unichar(pTHX_ U32 flags) | |
1442 | { | |
1443 | I32 c; | |
1444 | if (flags & ~(LEX_KEEP_PREVIOUS)) | |
1445 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_unichar"); | |
1446 | c = lex_peek_unichar(flags); | |
1447 | if (c != -1) { | |
1448 | if (c == '\n') | |
83944c01 | 1449 | COPLINE_INC_WITH_HERELINES; |
d9018cbe EB |
1450 | if (UTF) |
1451 | PL_parser->bufptr += UTF8SKIP(PL_parser->bufptr); | |
1452 | else | |
1453 | ++(PL_parser->bufptr); | |
f0e67a1d Z |
1454 | } |
1455 | return c; | |
1456 | } | |
1457 | ||
1458 | /* | |
1459 | =for apidoc Amx|void|lex_read_space|U32 flags | |
1460 | ||
1461 | Reads optional spaces, in Perl style, in the text currently being | |
1462 | lexed. The spaces may include ordinary whitespace characters and | |
1463 | Perl-style comments. C<#line> directives are processed if encountered. | |
1464 | L</PL_parser-E<gt>bufptr> is moved past the spaces, so that it points | |
1465 | at a non-space character (or the end of the input text). | |
1466 | ||
1467 | If spaces extend into the next chunk of input text, the next chunk will | |
1468 | be read in. Normally the current chunk will be discarded at the same | |
1469 | time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> then the current | |
1470 | chunk will not be discarded. | |
1471 | ||
1472 | =cut | |
1473 | */ | |
1474 | ||
f0998909 Z |
1475 | #define LEX_NO_NEXT_CHUNK 0x80000000 |
1476 | ||
f0e67a1d Z |
1477 | void |
1478 | Perl_lex_read_space(pTHX_ U32 flags) | |
1479 | { | |
1480 | char *s, *bufend; | |
1481 | bool need_incline = 0; | |
f0998909 | 1482 | if (flags & ~(LEX_KEEP_PREVIOUS|LEX_NO_NEXT_CHUNK)) |
f0e67a1d Z |
1483 | Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_space"); |
1484 | #ifdef PERL_MAD | |
1485 | if (PL_skipwhite) { | |
1486 | sv_free(PL_skipwhite); | |
1487 | PL_skipwhite = NULL; | |
1488 | } | |
1489 | if (PL_madskills) | |
1490 | PL_skipwhite = newSVpvs(""); | |
1491 | #endif /* PERL_MAD */ | |
1492 | s = PL_parser->bufptr; | |
1493 | bufend = PL_parser->bufend; | |
1494 | while (1) { | |
1495 | char c = *s; | |
1496 | if (c == '#') { | |
1497 | do { | |
1498 | c = *++s; | |
1499 | } while (!(c == '\n' || (c == 0 && s == bufend))); | |
1500 | } else if (c == '\n') { | |
1501 | s++; | |
1502 | PL_parser->linestart = s; | |
1503 | if (s == bufend) | |
1504 | need_incline = 1; | |
1505 | else | |
1506 | incline(s); | |
1507 | } else if (isSPACE(c)) { | |
1508 | s++; | |
1509 | } else if (c == 0 && s == bufend) { | |
1510 | bool got_more; | |
1511 | #ifdef PERL_MAD | |
1512 | if (PL_madskills) | |
1513 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1514 | #endif /* PERL_MAD */ | |
f0998909 Z |
1515 | if (flags & LEX_NO_NEXT_CHUNK) |
1516 | break; | |
f0e67a1d | 1517 | PL_parser->bufptr = s; |
83944c01 | 1518 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
1519 | got_more = lex_next_chunk(flags); |
1520 | CopLINE_dec(PL_curcop); | |
1521 | s = PL_parser->bufptr; | |
1522 | bufend = PL_parser->bufend; | |
1523 | if (!got_more) | |
1524 | break; | |
1525 | if (need_incline && PL_parser->rsfp) { | |
1526 | incline(s); | |
1527 | need_incline = 0; | |
1528 | } | |
1529 | } else { | |
1530 | break; | |
1531 | } | |
1532 | } | |
1533 | #ifdef PERL_MAD | |
1534 | if (PL_madskills) | |
1535 | sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr); | |
1536 | #endif /* PERL_MAD */ | |
1537 | PL_parser->bufptr = s; | |
1538 | } | |
1539 | ||
1540 | /* | |
ffb4593c NT |
1541 | * S_incline |
1542 | * This subroutine has nothing to do with tilting, whether at windmills | |
1543 | * or pinball tables. Its name is short for "increment line". It | |
57843af0 | 1544 | * increments the current line number in CopLINE(PL_curcop) and checks |
ffb4593c | 1545 | * to see whether the line starts with a comment of the form |
9cbb5ea2 GS |
1546 | * # line 500 "foo.pm" |
1547 | * If so, it sets the current line number and file to the values in the comment. | |
ffb4593c NT |
1548 | */ |
1549 | ||
76e3520e | 1550 | STATIC void |
d9095cec | 1551 | S_incline(pTHX_ const char *s) |
463ee0b2 | 1552 | { |
97aff369 | 1553 | dVAR; |
d9095cec NC |
1554 | const char *t; |
1555 | const char *n; | |
1556 | const char *e; | |
8818d409 | 1557 | line_t line_num; |
463ee0b2 | 1558 | |
7918f24d NC |
1559 | PERL_ARGS_ASSERT_INCLINE; |
1560 | ||
83944c01 | 1561 | COPLINE_INC_WITH_HERELINES; |
463ee0b2 LW |
1562 | if (*s++ != '#') |
1563 | return; | |
d4c19fe8 AL |
1564 | while (SPACE_OR_TAB(*s)) |
1565 | s++; | |
73659bf1 GS |
1566 | if (strnEQ(s, "line", 4)) |
1567 | s += 4; | |
1568 | else | |
1569 | return; | |
084592ab | 1570 | if (SPACE_OR_TAB(*s)) |
73659bf1 | 1571 | s++; |
4e553d73 | 1572 | else |
73659bf1 | 1573 | return; |
d4c19fe8 AL |
1574 | while (SPACE_OR_TAB(*s)) |
1575 | s++; | |
463ee0b2 LW |
1576 | if (!isDIGIT(*s)) |
1577 | return; | |
d4c19fe8 | 1578 | |
463ee0b2 LW |
1579 | n = s; |
1580 | while (isDIGIT(*s)) | |
1581 | s++; | |
07714eb4 | 1582 | if (!SPACE_OR_TAB(*s) && *s != '\r' && *s != '\n' && *s != '\0') |
26b6dc3f | 1583 | return; |
bf4acbe4 | 1584 | while (SPACE_OR_TAB(*s)) |
463ee0b2 | 1585 | s++; |
73659bf1 | 1586 | if (*s == '"' && (t = strchr(s+1, '"'))) { |
463ee0b2 | 1587 | s++; |
73659bf1 GS |
1588 | e = t + 1; |
1589 | } | |
463ee0b2 | 1590 | else { |
c35e046a AL |
1591 | t = s; |
1592 | while (!isSPACE(*t)) | |
1593 | t++; | |
73659bf1 | 1594 | e = t; |
463ee0b2 | 1595 | } |
bf4acbe4 | 1596 | while (SPACE_OR_TAB(*e) || *e == '\r' || *e == '\f') |
73659bf1 GS |
1597 | e++; |
1598 | if (*e != '\n' && *e != '\0') | |
1599 | return; /* false alarm */ | |
1600 | ||
8818d409 FC |
1601 | line_num = atoi(n)-1; |
1602 | ||
f4dd75d9 | 1603 | if (t - s > 0) { |
d9095cec | 1604 | const STRLEN len = t - s; |
19bad673 NC |
1605 | SV *const temp_sv = CopFILESV(PL_curcop); |
1606 | const char *cf; | |
1607 | STRLEN tmplen; | |
1608 | ||
1609 | if (temp_sv) { | |
1610 | cf = SvPVX(temp_sv); | |
1611 | tmplen = SvCUR(temp_sv); | |
1612 | } else { | |
1613 | cf = NULL; | |
1614 | tmplen = 0; | |
1615 | } | |
1616 | ||
d1299d44 | 1617 | if (!PL_rsfp && !PL_parser->filtered) { |
e66cf94c RGS |
1618 | /* must copy *{"::_<(eval N)[oldfilename:L]"} |
1619 | * to *{"::_<newfilename"} */ | |
44867030 NC |
1620 | /* However, the long form of evals is only turned on by the |
1621 | debugger - usually they're "(eval %lu)" */ | |
1622 | char smallbuf[128]; | |
1623 | char *tmpbuf; | |
1624 | GV **gvp; | |
d9095cec | 1625 | STRLEN tmplen2 = len; |
798b63bc | 1626 | if (tmplen + 2 <= sizeof smallbuf) |
e66cf94c RGS |
1627 | tmpbuf = smallbuf; |
1628 | else | |
2ae0db35 | 1629 | Newx(tmpbuf, tmplen + 2, char); |
44867030 NC |
1630 | tmpbuf[0] = '_'; |
1631 | tmpbuf[1] = '<'; | |
2ae0db35 | 1632 | memcpy(tmpbuf + 2, cf, tmplen); |
44867030 | 1633 | tmplen += 2; |
8a5ee598 RGS |
1634 | gvp = (GV**)hv_fetch(PL_defstash, tmpbuf, tmplen, FALSE); |
1635 | if (gvp) { | |
44867030 NC |
1636 | char *tmpbuf2; |
1637 | GV *gv2; | |
1638 | ||
1639 | if (tmplen2 + 2 <= sizeof smallbuf) | |
1640 | tmpbuf2 = smallbuf; | |
1641 | else | |
1642 | Newx(tmpbuf2, tmplen2 + 2, char); | |
1643 | ||
1644 | if (tmpbuf2 != smallbuf || tmpbuf != smallbuf) { | |
1645 | /* Either they malloc'd it, or we malloc'd it, | |
1646 | so no prefix is present in ours. */ | |
1647 | tmpbuf2[0] = '_'; | |
1648 | tmpbuf2[1] = '<'; | |
1649 | } | |
1650 | ||
1651 | memcpy(tmpbuf2 + 2, s, tmplen2); | |
1652 | tmplen2 += 2; | |
1653 | ||
8a5ee598 | 1654 | gv2 = *(GV**)hv_fetch(PL_defstash, tmpbuf2, tmplen2, TRUE); |
e5527e4b | 1655 | if (!isGV(gv2)) { |
8a5ee598 | 1656 | gv_init(gv2, PL_defstash, tmpbuf2, tmplen2, FALSE); |
e5527e4b RGS |
1657 | /* adjust ${"::_<newfilename"} to store the new file name */ |
1658 | GvSV(gv2) = newSVpvn(tmpbuf2 + 2, tmplen2 - 2); | |
8818d409 FC |
1659 | /* The line number may differ. If that is the case, |
1660 | alias the saved lines that are in the array. | |
1661 | Otherwise alias the whole array. */ | |
1662 | if (CopLINE(PL_curcop) == line_num) { | |
1663 | GvHV(gv2) = MUTABLE_HV(SvREFCNT_inc(GvHV(*gvp))); | |
1664 | GvAV(gv2) = MUTABLE_AV(SvREFCNT_inc(GvAV(*gvp))); | |
1665 | } | |
1666 | else if (GvAV(*gvp)) { | |
1667 | AV * const av = GvAV(*gvp); | |
1668 | const I32 start = CopLINE(PL_curcop)+1; | |
1669 | I32 items = AvFILLp(av) - start; | |
1670 | if (items > 0) { | |
1671 | AV * const av2 = GvAVn(gv2); | |
1672 | SV **svp = AvARRAY(av) + start; | |
1673 | I32 l = (I32)line_num+1; | |
1674 | while (items--) | |
1675 | av_store(av2, l++, SvREFCNT_inc(*svp++)); | |
1676 | } | |
1677 | } | |
e5527e4b | 1678 | } |
44867030 NC |
1679 | |
1680 | if (tmpbuf2 != smallbuf) Safefree(tmpbuf2); | |
8a5ee598 | 1681 | } |
e66cf94c | 1682 | if (tmpbuf != smallbuf) Safefree(tmpbuf); |
e66cf94c | 1683 | } |
05ec9bb3 | 1684 | CopFILE_free(PL_curcop); |
d9095cec | 1685 | CopFILE_setn(PL_curcop, s, len); |
f4dd75d9 | 1686 | } |
8818d409 | 1687 | CopLINE_set(PL_curcop, line_num); |
463ee0b2 LW |
1688 | } |
1689 | ||
29595ff2 | 1690 | #ifdef PERL_MAD |
cd81e915 | 1691 | /* skip space before PL_thistoken */ |
29595ff2 NC |
1692 | |
1693 | STATIC char * | |
1694 | S_skipspace0(pTHX_ register char *s) | |
1695 | { | |
7918f24d NC |
1696 | PERL_ARGS_ASSERT_SKIPSPACE0; |
1697 | ||
29595ff2 NC |
1698 | s = skipspace(s); |
1699 | if (!PL_madskills) | |
1700 | return s; | |
cd81e915 NC |
1701 | if (PL_skipwhite) { |
1702 | if (!PL_thiswhite) | |
6b29d1f5 | 1703 | PL_thiswhite = newSVpvs(""); |
cd81e915 NC |
1704 | sv_catsv(PL_thiswhite, PL_skipwhite); |
1705 | sv_free(PL_skipwhite); | |
1706 | PL_skipwhite = 0; | |
1707 | } | |
1708 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
29595ff2 NC |
1709 | return s; |
1710 | } | |
1711 | ||
cd81e915 | 1712 | /* skip space after PL_thistoken */ |
29595ff2 NC |
1713 | |
1714 | STATIC char * | |
1715 | S_skipspace1(pTHX_ register char *s) | |
1716 | { | |
d4c19fe8 | 1717 | const char *start = s; |
29595ff2 NC |
1718 | I32 startoff = start - SvPVX(PL_linestr); |
1719 | ||
7918f24d NC |
1720 | PERL_ARGS_ASSERT_SKIPSPACE1; |
1721 | ||
29595ff2 NC |
1722 | s = skipspace(s); |
1723 | if (!PL_madskills) | |
1724 | return s; | |
1725 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1726 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1727 | const char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1728 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1729 | } | |
1730 | PL_realtokenstart = -1; | |
1731 | if (PL_skipwhite) { | |
1732 | if (!PL_nextwhite) | |
6b29d1f5 | 1733 | PL_nextwhite = newSVpvs(""); |
cd81e915 NC |
1734 | sv_catsv(PL_nextwhite, PL_skipwhite); |
1735 | sv_free(PL_skipwhite); | |
1736 | PL_skipwhite = 0; | |
29595ff2 NC |
1737 | } |
1738 | return s; | |
1739 | } | |
1740 | ||
1741 | STATIC char * | |
1742 | S_skipspace2(pTHX_ register char *s, SV **svp) | |
1743 | { | |
c35e046a AL |
1744 | char *start; |
1745 | const I32 bufptroff = PL_bufptr - SvPVX(PL_linestr); | |
1746 | const I32 startoff = s - SvPVX(PL_linestr); | |
1747 | ||
7918f24d NC |
1748 | PERL_ARGS_ASSERT_SKIPSPACE2; |
1749 | ||
29595ff2 NC |
1750 | s = skipspace(s); |
1751 | PL_bufptr = SvPVX(PL_linestr) + bufptroff; | |
1752 | if (!PL_madskills || !svp) | |
1753 | return s; | |
1754 | start = SvPVX(PL_linestr) + startoff; | |
cd81e915 | 1755 | if (!PL_thistoken && PL_realtokenstart >= 0) { |
d4c19fe8 | 1756 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 NC |
1757 | PL_thistoken = newSVpvn(tstart, start - tstart); |
1758 | PL_realtokenstart = -1; | |
29595ff2 | 1759 | } |
cd81e915 | 1760 | if (PL_skipwhite) { |
29595ff2 | 1761 | if (!*svp) |
6b29d1f5 | 1762 | *svp = newSVpvs(""); |
cd81e915 NC |
1763 | sv_setsv(*svp, PL_skipwhite); |
1764 | sv_free(PL_skipwhite); | |
1765 | PL_skipwhite = 0; | |
29595ff2 NC |
1766 | } |
1767 | ||
1768 | return s; | |
1769 | } | |
1770 | #endif | |
1771 | ||
80a702cd | 1772 | STATIC void |
15f169a1 | 1773 | S_update_debugger_info(pTHX_ SV *orig_sv, const char *const buf, STRLEN len) |
80a702cd RGS |
1774 | { |
1775 | AV *av = CopFILEAVx(PL_curcop); | |
1776 | if (av) { | |
b9f83d2f | 1777 | SV * const sv = newSV_type(SVt_PVMG); |
5fa550fb NC |
1778 | if (orig_sv) |
1779 | sv_setsv(sv, orig_sv); | |
1780 | else | |
1781 | sv_setpvn(sv, buf, len); | |
80a702cd RGS |
1782 | (void)SvIOK_on(sv); |
1783 | SvIV_set(sv, 0); | |
1784 | av_store(av, (I32)CopLINE(PL_curcop), sv); | |
1785 | } | |
1786 | } | |
1787 | ||
ffb4593c NT |
1788 | /* |
1789 | * S_skipspace | |
1790 | * Called to gobble the appropriate amount and type of whitespace. | |
1791 | * Skips comments as well. | |
1792 | */ | |
1793 | ||
76e3520e | 1794 | STATIC char * |
cea2e8a9 | 1795 | S_skipspace(pTHX_ register char *s) |
a687059c | 1796 | { |
5db06880 | 1797 | #ifdef PERL_MAD |
f0e67a1d Z |
1798 | char *start = s; |
1799 | #endif /* PERL_MAD */ | |
7918f24d | 1800 | PERL_ARGS_ASSERT_SKIPSPACE; |
f0e67a1d | 1801 | #ifdef PERL_MAD |
cd81e915 NC |
1802 | if (PL_skipwhite) { |
1803 | sv_free(PL_skipwhite); | |
f0e67a1d | 1804 | PL_skipwhite = NULL; |
5db06880 | 1805 | } |
f0e67a1d | 1806 | #endif /* PERL_MAD */ |
3280af22 | 1807 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
bf4acbe4 | 1808 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
463ee0b2 | 1809 | s++; |
f0e67a1d Z |
1810 | } else { |
1811 | STRLEN bufptr_pos = PL_bufptr - SvPVX(PL_linestr); | |
1812 | PL_bufptr = s; | |
f0998909 Z |
1813 | lex_read_space(LEX_KEEP_PREVIOUS | |
1814 | (PL_sublex_info.sub_inwhat || PL_lex_state == LEX_FORMLINE ? | |
1815 | LEX_NO_NEXT_CHUNK : 0)); | |
3280af22 | 1816 | s = PL_bufptr; |
f0e67a1d Z |
1817 | PL_bufptr = SvPVX(PL_linestr) + bufptr_pos; |
1818 | if (PL_linestart > PL_bufptr) | |
1819 | PL_bufptr = PL_linestart; | |
1820 | return s; | |
463ee0b2 | 1821 | } |
5db06880 | 1822 | #ifdef PERL_MAD |
f0e67a1d Z |
1823 | if (PL_madskills) |
1824 | PL_skipwhite = newSVpvn(start, s-start); | |
1825 | #endif /* PERL_MAD */ | |
5db06880 | 1826 | return s; |
a687059c | 1827 | } |
378cc40b | 1828 | |
ffb4593c NT |
1829 | /* |
1830 | * S_check_uni | |
1831 | * Check the unary operators to ensure there's no ambiguity in how they're | |
1832 | * used. An ambiguous piece of code would be: | |
1833 | * rand + 5 | |
1834 | * This doesn't mean rand() + 5. Because rand() is a unary operator, | |
1835 | * the +5 is its argument. | |
1836 | */ | |
1837 | ||
76e3520e | 1838 | STATIC void |
cea2e8a9 | 1839 | S_check_uni(pTHX) |
ba106d47 | 1840 | { |
97aff369 | 1841 | dVAR; |
d4c19fe8 AL |
1842 | const char *s; |
1843 | const char *t; | |
2f3197b3 | 1844 | |
3280af22 | 1845 | if (PL_oldoldbufptr != PL_last_uni) |
2f3197b3 | 1846 | return; |
3280af22 NIS |
1847 | while (isSPACE(*PL_last_uni)) |
1848 | PL_last_uni++; | |
c35e046a AL |
1849 | s = PL_last_uni; |
1850 | while (isALNUM_lazy_if(s,UTF) || *s == '-') | |
1851 | s++; | |
3280af22 | 1852 | if ((t = strchr(s, '(')) && t < PL_bufptr) |
a0d0e21e | 1853 | return; |
6136c704 | 1854 | |
9b387841 NC |
1855 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
1856 | "Warning: Use of \"%.*s\" without parentheses is ambiguous", | |
1857 | (int)(s - PL_last_uni), PL_last_uni); | |
2f3197b3 LW |
1858 | } |
1859 | ||
ffb4593c NT |
1860 | /* |
1861 | * LOP : macro to build a list operator. Its behaviour has been replaced | |
1862 | * with a subroutine, S_lop() for which LOP is just another name. | |
1863 | */ | |
1864 | ||
a0d0e21e LW |
1865 | #define LOP(f,x) return lop(f,x,s) |
1866 | ||
ffb4593c NT |
1867 | /* |
1868 | * S_lop | |
1869 | * Build a list operator (or something that might be one). The rules: | |
1870 | * - if we have a next token, then it's a list operator [why?] | |
1871 | * - if the next thing is an opening paren, then it's a function | |
1872 | * - else it's a list operator | |
1873 | */ | |
1874 | ||
76e3520e | 1875 | STATIC I32 |
a0be28da | 1876 | S_lop(pTHX_ I32 f, int x, char *s) |
ffed7fef | 1877 | { |
97aff369 | 1878 | dVAR; |
7918f24d NC |
1879 | |
1880 | PERL_ARGS_ASSERT_LOP; | |
1881 | ||
6154021b | 1882 | pl_yylval.ival = f; |
35c8bce7 | 1883 | CLINE; |
3280af22 NIS |
1884 | PL_expect = x; |
1885 | PL_bufptr = s; | |
1886 | PL_last_lop = PL_oldbufptr; | |
eb160463 | 1887 | PL_last_lop_op = (OPCODE)f; |
5db06880 NC |
1888 | #ifdef PERL_MAD |
1889 | if (PL_lasttoke) | |
78cdf107 | 1890 | goto lstop; |
5db06880 | 1891 | #else |
3280af22 | 1892 | if (PL_nexttoke) |
78cdf107 | 1893 | goto lstop; |
5db06880 | 1894 | #endif |
79072805 | 1895 | if (*s == '(') |
bbf60fe6 | 1896 | return REPORT(FUNC); |
29595ff2 | 1897 | s = PEEKSPACE(s); |
79072805 | 1898 | if (*s == '(') |
bbf60fe6 | 1899 | return REPORT(FUNC); |
78cdf107 Z |
1900 | else { |
1901 | lstop: | |
1902 | if (!PL_lex_allbrackets && PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
1903 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 1904 | return REPORT(LSTOP); |
78cdf107 | 1905 | } |
79072805 LW |
1906 | } |
1907 | ||
5db06880 NC |
1908 | #ifdef PERL_MAD |
1909 | /* | |
1910 | * S_start_force | |
1911 | * Sets up for an eventual force_next(). start_force(0) basically does | |
1912 | * an unshift, while start_force(-1) does a push. yylex removes items | |
1913 | * on the "pop" end. | |
1914 | */ | |
1915 | ||
1916 | STATIC void | |
1917 | S_start_force(pTHX_ int where) | |
1918 | { | |
1919 | int i; | |
1920 | ||
cd81e915 | 1921 | if (where < 0) /* so people can duplicate start_force(PL_curforce) */ |
5db06880 | 1922 | where = PL_lasttoke; |
cd81e915 NC |
1923 | assert(PL_curforce < 0 || PL_curforce == where); |
1924 | if (PL_curforce != where) { | |
5db06880 NC |
1925 | for (i = PL_lasttoke; i > where; --i) { |
1926 | PL_nexttoke[i] = PL_nexttoke[i-1]; | |
1927 | } | |
1928 | PL_lasttoke++; | |
1929 | } | |
cd81e915 | 1930 | if (PL_curforce < 0) /* in case of duplicate start_force() */ |
5db06880 | 1931 | Zero(&PL_nexttoke[where], 1, NEXTTOKE); |
cd81e915 NC |
1932 | PL_curforce = where; |
1933 | if (PL_nextwhite) { | |
5db06880 | 1934 | if (PL_madskills) |
6b29d1f5 | 1935 | curmad('^', newSVpvs("")); |
cd81e915 | 1936 | CURMAD('_', PL_nextwhite); |
5db06880 NC |
1937 | } |
1938 | } | |
1939 | ||
1940 | STATIC void | |
1941 | S_curmad(pTHX_ char slot, SV *sv) | |
1942 | { | |
1943 | MADPROP **where; | |
1944 | ||
1945 | if (!sv) | |
1946 | return; | |
cd81e915 NC |
1947 | if (PL_curforce < 0) |
1948 | where = &PL_thismad; | |
5db06880 | 1949 | else |
cd81e915 | 1950 | where = &PL_nexttoke[PL_curforce].next_mad; |
5db06880 | 1951 | |
cd81e915 | 1952 | if (PL_faketokens) |
76f68e9b | 1953 | sv_setpvs(sv, ""); |
5db06880 NC |
1954 | else { |
1955 | if (!IN_BYTES) { | |
1956 | if (UTF && is_utf8_string((U8*)SvPVX(sv), SvCUR(sv))) | |
1957 | SvUTF8_on(sv); | |
1958 | else if (PL_encoding) { | |
1959 | sv_recode_to_utf8(sv, PL_encoding); | |
1960 | } | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | /* keep a slot open for the head of the list? */ | |
1965 | if (slot != '_' && *where && (*where)->mad_key == '^') { | |
1966 | (*where)->mad_key = slot; | |
daba3364 | 1967 | sv_free(MUTABLE_SV(((*where)->mad_val))); |
5db06880 NC |
1968 | (*where)->mad_val = (void*)sv; |
1969 | } | |
1970 | else | |
1971 | addmad(newMADsv(slot, sv), where, 0); | |
1972 | } | |
1973 | #else | |
b3f24c00 MHM |
1974 | # define start_force(where) NOOP |
1975 | # define curmad(slot, sv) NOOP | |
5db06880 NC |
1976 | #endif |
1977 | ||
ffb4593c NT |
1978 | /* |
1979 | * S_force_next | |
9cbb5ea2 | 1980 | * When the lexer realizes it knows the next token (for instance, |
ffb4593c | 1981 | * it is reordering tokens for the parser) then it can call S_force_next |
9cbb5ea2 | 1982 | * to know what token to return the next time the lexer is called. Caller |
5db06880 NC |
1983 | * will need to set PL_nextval[] (or PL_nexttoke[].next_val with PERL_MAD), |
1984 | * and possibly PL_expect to ensure the lexer handles the token correctly. | |
ffb4593c NT |
1985 | */ |
1986 | ||
4e553d73 | 1987 | STATIC void |
cea2e8a9 | 1988 | S_force_next(pTHX_ I32 type) |
79072805 | 1989 | { |
97aff369 | 1990 | dVAR; |
704d4215 GG |
1991 | #ifdef DEBUGGING |
1992 | if (DEBUG_T_TEST) { | |
1993 | PerlIO_printf(Perl_debug_log, "### forced token:\n"); | |
f05d7009 | 1994 | tokereport(type, &NEXTVAL_NEXTTOKE); |
704d4215 GG |
1995 | } |
1996 | #endif | |
6c7ae946 FC |
1997 | /* Don’t let opslab_force_free snatch it */ |
1998 | if (S_is_opval_token(type & 0xffff) && NEXTVAL_NEXTTOKE.opval) { | |
1999 | assert(!NEXTVAL_NEXTTOKE.opval->op_savefree); | |
2000 | NEXTVAL_NEXTTOKE.opval->op_savefree = 1; | |
2001 | } | |
5db06880 | 2002 | #ifdef PERL_MAD |
cd81e915 | 2003 | if (PL_curforce < 0) |
5db06880 | 2004 | start_force(PL_lasttoke); |
cd81e915 | 2005 | PL_nexttoke[PL_curforce].next_type = type; |
5db06880 NC |
2006 | if (PL_lex_state != LEX_KNOWNEXT) |
2007 | PL_lex_defer = PL_lex_state; | |
2008 | PL_lex_state = LEX_KNOWNEXT; | |
2009 | PL_lex_expect = PL_expect; | |
cd81e915 | 2010 | PL_curforce = -1; |
5db06880 | 2011 | #else |
3280af22 NIS |
2012 | PL_nexttype[PL_nexttoke] = type; |
2013 | PL_nexttoke++; | |
2014 | if (PL_lex_state != LEX_KNOWNEXT) { | |
2015 | PL_lex_defer = PL_lex_state; | |
2016 | PL_lex_expect = PL_expect; | |
2017 | PL_lex_state = LEX_KNOWNEXT; | |
79072805 | 2018 | } |
5db06880 | 2019 | #endif |
79072805 LW |
2020 | } |
2021 | ||
28ac2b49 Z |
2022 | void |
2023 | Perl_yyunlex(pTHX) | |
2024 | { | |
a7aaec61 Z |
2025 | int yyc = PL_parser->yychar; |
2026 | if (yyc != YYEMPTY) { | |
2027 | if (yyc) { | |
2028 | start_force(-1); | |
2029 | NEXTVAL_NEXTTOKE = PL_parser->yylval; | |
2030 | if (yyc == '{'/*}*/ || yyc == HASHBRACK || yyc == '['/*]*/) { | |
78cdf107 | 2031 | PL_lex_allbrackets--; |
a7aaec61 | 2032 | PL_lex_brackets--; |
78cdf107 Z |
2033 | yyc |= (3<<24) | (PL_lex_brackstack[PL_lex_brackets] << 16); |
2034 | } else if (yyc == '('/*)*/) { | |
2035 | PL_lex_allbrackets--; | |
2036 | yyc |= (2<<24); | |
a7aaec61 Z |
2037 | } |
2038 | force_next(yyc); | |
2039 | } | |
28ac2b49 Z |
2040 | PL_parser->yychar = YYEMPTY; |
2041 | } | |
2042 | } | |
2043 | ||
d0a148a6 | 2044 | STATIC SV * |
15f169a1 | 2045 | S_newSV_maybe_utf8(pTHX_ const char *const start, STRLEN len) |
d0a148a6 | 2046 | { |
97aff369 | 2047 | dVAR; |
740cce10 | 2048 | SV * const sv = newSVpvn_utf8(start, len, |
eaf7a4d2 CS |
2049 | !IN_BYTES |
2050 | && UTF | |
2051 | && !is_ascii_string((const U8*)start, len) | |
740cce10 | 2052 | && is_utf8_string((const U8*)start, len)); |
d0a148a6 NC |
2053 | return sv; |
2054 | } | |
2055 | ||
ffb4593c NT |
2056 | /* |
2057 | * S_force_word | |
2058 | * When the lexer knows the next thing is a word (for instance, it has | |
2059 | * just seen -> and it knows that the next char is a word char, then | |
02b34bbe DM |
2060 | * it calls S_force_word to stick the next word into the PL_nexttoke/val |
2061 | * lookahead. | |
ffb4593c NT |
2062 | * |
2063 | * Arguments: | |
b1b65b59 | 2064 | * char *start : buffer position (must be within PL_linestr) |
02b34bbe | 2065 | * int token : PL_next* will be this type of bare word (e.g., METHOD,WORD) |
ffb4593c NT |
2066 | * int check_keyword : if true, Perl checks to make sure the word isn't |
2067 | * a keyword (do this if the word is a label, e.g. goto FOO) | |
2068 | * int allow_pack : if true, : characters will also be allowed (require, | |
2069 | * use, etc. do this) | |
9cbb5ea2 | 2070 | * int allow_initial_tick : used by the "sub" lexer only. |
ffb4593c NT |
2071 | */ |
2072 | ||
76e3520e | 2073 | STATIC char * |
cea2e8a9 | 2074 | S_force_word(pTHX_ register char *start, int token, int check_keyword, int allow_pack, int allow_initial_tick) |
79072805 | 2075 | { |
97aff369 | 2076 | dVAR; |
eb578fdb | 2077 | char *s; |
463ee0b2 | 2078 | STRLEN len; |
4e553d73 | 2079 | |
7918f24d NC |
2080 | PERL_ARGS_ASSERT_FORCE_WORD; |
2081 | ||
29595ff2 | 2082 | start = SKIPSPACE1(start); |
463ee0b2 | 2083 | s = start; |
7e2040f0 | 2084 | if (isIDFIRST_lazy_if(s,UTF) || |
a0d0e21e | 2085 | (allow_pack && *s == ':') || |
15f0808c | 2086 | (allow_initial_tick && *s == '\'') ) |
a0d0e21e | 2087 | { |
3280af22 | 2088 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, allow_pack, &len); |
5458a98a | 2089 | if (check_keyword && keyword(PL_tokenbuf, len, 0)) |
463ee0b2 | 2090 | return start; |
cd81e915 | 2091 | start_force(PL_curforce); |
5db06880 NC |
2092 | if (PL_madskills) |
2093 | curmad('X', newSVpvn(start,s-start)); | |
463ee0b2 | 2094 | if (token == METHOD) { |
29595ff2 | 2095 | s = SKIPSPACE1(s); |
463ee0b2 | 2096 | if (*s == '(') |
3280af22 | 2097 | PL_expect = XTERM; |
463ee0b2 | 2098 | else { |
3280af22 | 2099 | PL_expect = XOPERATOR; |
463ee0b2 | 2100 | } |
79072805 | 2101 | } |
e74e6b3d | 2102 | if (PL_madskills) |
63575281 | 2103 | curmad('g', newSVpvs( "forced" )); |
9ded7720 | 2104 | NEXTVAL_NEXTTOKE.opval |
d0a148a6 NC |
2105 | = (OP*)newSVOP(OP_CONST,0, |
2106 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
9ded7720 | 2107 | NEXTVAL_NEXTTOKE.opval->op_private |= OPpCONST_BARE; |
79072805 LW |
2108 | force_next(token); |
2109 | } | |
2110 | return s; | |
2111 | } | |
2112 | ||
ffb4593c NT |
2113 | /* |
2114 | * S_force_ident | |
9cbb5ea2 | 2115 | * Called when the lexer wants $foo *foo &foo etc, but the program |
ffb4593c NT |
2116 | * text only contains the "foo" portion. The first argument is a pointer |
2117 | * to the "foo", and the second argument is the type symbol to prefix. | |
2118 | * Forces the next token to be a "WORD". | |
9cbb5ea2 | 2119 | * Creates the symbol if it didn't already exist (via gv_fetchpv()). |
ffb4593c NT |
2120 | */ |
2121 | ||
76e3520e | 2122 | STATIC void |
bfed75c6 | 2123 | S_force_ident(pTHX_ register const char *s, int kind) |
79072805 | 2124 | { |
97aff369 | 2125 | dVAR; |
7918f24d NC |
2126 | |
2127 | PERL_ARGS_ASSERT_FORCE_IDENT; | |
2128 | ||
c35e046a | 2129 | if (*s) { |
90e5519e | 2130 | const STRLEN len = strlen(s); |
728847b1 BF |
2131 | OP* const o = (OP*)newSVOP(OP_CONST, 0, newSVpvn_flags(s, len, |
2132 | UTF ? SVf_UTF8 : 0)); | |
cd81e915 | 2133 | start_force(PL_curforce); |
9ded7720 | 2134 | NEXTVAL_NEXTTOKE.opval = o; |
79072805 | 2135 | force_next(WORD); |
748a9306 | 2136 | if (kind) { |
11343788 | 2137 | o->op_private = OPpCONST_ENTERED; |
55497cff | 2138 | /* XXX see note in pp_entereval() for why we forgo typo |
2139 | warnings if the symbol must be introduced in an eval. | |
2140 | GSAR 96-10-12 */ | |
90e5519e | 2141 | gv_fetchpvn_flags(s, len, |
728847b1 BF |
2142 | (PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) |
2143 | : GV_ADD) | ( UTF ? SVf_UTF8 : 0 ), | |
90e5519e NC |
2144 | kind == '$' ? SVt_PV : |
2145 | kind == '@' ? SVt_PVAV : | |
2146 | kind == '%' ? SVt_PVHV : | |
a0d0e21e | 2147 | SVt_PVGV |
90e5519e | 2148 | ); |
748a9306 | 2149 | } |
79072805 LW |
2150 | } |
2151 | } | |
2152 | ||
3f33d153 FC |
2153 | static void |
2154 | S_force_ident_maybe_lex(pTHX_ char pit) | |
2155 | { | |
2156 | start_force(PL_curforce); | |
2157 | NEXTVAL_NEXTTOKE.ival = pit; | |
2158 | force_next('p'); | |
2159 | } | |
2160 | ||
1571675a GS |
2161 | NV |
2162 | Perl_str_to_version(pTHX_ SV *sv) | |
2163 | { | |
2164 | NV retval = 0.0; | |
2165 | NV nshift = 1.0; | |
2166 | STRLEN len; | |
cfd0369c | 2167 | const char *start = SvPV_const(sv,len); |
9d4ba2ae | 2168 | const char * const end = start + len; |
504618e9 | 2169 | const bool utf = SvUTF8(sv) ? TRUE : FALSE; |
7918f24d NC |
2170 | |
2171 | PERL_ARGS_ASSERT_STR_TO_VERSION; | |
2172 | ||
1571675a | 2173 | while (start < end) { |
ba210ebe | 2174 | STRLEN skip; |
1571675a GS |
2175 | UV n; |
2176 | if (utf) | |
9041c2e3 | 2177 | n = utf8n_to_uvchr((U8*)start, len, &skip, 0); |
1571675a GS |
2178 | else { |
2179 | n = *(U8*)start; | |
2180 | skip = 1; | |
2181 | } | |
2182 | retval += ((NV)n)/nshift; | |
2183 | start += skip; | |
2184 | nshift *= 1000; | |
2185 | } | |
2186 | return retval; | |
2187 | } | |
2188 | ||
4e553d73 | 2189 | /* |
ffb4593c NT |
2190 | * S_force_version |
2191 | * Forces the next token to be a version number. | |
e759cc13 RGS |
2192 | * If the next token appears to be an invalid version number, (e.g. "v2b"), |
2193 | * and if "guessing" is TRUE, then no new token is created (and the caller | |
2194 | * must use an alternative parsing method). | |
ffb4593c NT |
2195 | */ |
2196 | ||
76e3520e | 2197 | STATIC char * |
e759cc13 | 2198 | S_force_version(pTHX_ char *s, int guessing) |
89bfa8cd | 2199 | { |
97aff369 | 2200 | dVAR; |
5f66b61c | 2201 | OP *version = NULL; |
44dcb63b | 2202 | char *d; |
5db06880 NC |
2203 | #ifdef PERL_MAD |
2204 | I32 startoff = s - SvPVX(PL_linestr); | |
2205 | #endif | |
89bfa8cd | 2206 | |
7918f24d NC |
2207 | PERL_ARGS_ASSERT_FORCE_VERSION; |
2208 | ||
29595ff2 | 2209 | s = SKIPSPACE1(s); |
89bfa8cd | 2210 | |
44dcb63b | 2211 | d = s; |
dd629d5b | 2212 | if (*d == 'v') |
44dcb63b | 2213 | d++; |
44dcb63b | 2214 | if (isDIGIT(*d)) { |
e759cc13 RGS |
2215 | while (isDIGIT(*d) || *d == '_' || *d == '.') |
2216 | d++; | |
5db06880 NC |
2217 | #ifdef PERL_MAD |
2218 | if (PL_madskills) { | |
cd81e915 | 2219 | start_force(PL_curforce); |
5db06880 NC |
2220 | curmad('X', newSVpvn(s,d-s)); |
2221 | } | |
2222 | #endif | |
4e4da3ac | 2223 | if (*d == ';' || isSPACE(*d) || *d == '{' || *d == '}' || !*d) { |
dd629d5b | 2224 | SV *ver; |
8d08d9ba | 2225 | #ifdef USE_LOCALE_NUMERIC |
909d3787 KW |
2226 | char *loc = savepv(setlocale(LC_NUMERIC, NULL)); |
2227 | setlocale(LC_NUMERIC, "C"); | |
8d08d9ba | 2228 | #endif |
6154021b | 2229 | s = scan_num(s, &pl_yylval); |
8d08d9ba DG |
2230 | #ifdef USE_LOCALE_NUMERIC |
2231 | setlocale(LC_NUMERIC, loc); | |
909d3787 | 2232 | Safefree(loc); |
8d08d9ba | 2233 | #endif |
6154021b | 2234 | version = pl_yylval.opval; |
dd629d5b GS |
2235 | ver = cSVOPx(version)->op_sv; |
2236 | if (SvPOK(ver) && !SvNIOK(ver)) { | |
862a34c6 | 2237 | SvUPGRADE(ver, SVt_PVNV); |
9d6ce603 | 2238 | SvNV_set(ver, str_to_version(ver)); |
1571675a | 2239 | SvNOK_on(ver); /* hint that it is a version */ |
44dcb63b | 2240 | } |
89bfa8cd | 2241 | } |
5db06880 NC |
2242 | else if (guessing) { |
2243 | #ifdef PERL_MAD | |
2244 | if (PL_madskills) { | |
cd81e915 NC |
2245 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2246 | PL_nextwhite = 0; | |
5db06880 NC |
2247 | s = SvPVX(PL_linestr) + startoff; |
2248 | } | |
2249 | #endif | |
e759cc13 | 2250 | return s; |
5db06880 | 2251 | } |
89bfa8cd | 2252 | } |
2253 | ||
5db06880 NC |
2254 | #ifdef PERL_MAD |
2255 | if (PL_madskills && !version) { | |
cd81e915 NC |
2256 | sv_free(PL_nextwhite); /* let next token collect whitespace */ |
2257 | PL_nextwhite = 0; | |
5db06880 NC |
2258 | s = SvPVX(PL_linestr) + startoff; |
2259 | } | |
2260 | #endif | |
89bfa8cd | 2261 | /* NOTE: The parser sees the package name and the VERSION swapped */ |
cd81e915 | 2262 | start_force(PL_curforce); |
9ded7720 | 2263 | NEXTVAL_NEXTTOKE.opval = version; |
4e553d73 | 2264 | force_next(WORD); |
89bfa8cd | 2265 | |
e759cc13 | 2266 | return s; |
89bfa8cd | 2267 | } |
2268 | ||
ffb4593c | 2269 | /* |
91152fc1 DG |
2270 | * S_force_strict_version |
2271 | * Forces the next token to be a version number using strict syntax rules. | |
2272 | */ | |
2273 | ||
2274 | STATIC char * | |
2275 | S_force_strict_version(pTHX_ char *s) | |
2276 | { | |
2277 | dVAR; | |
2278 | OP *version = NULL; | |
2279 | #ifdef PERL_MAD | |
2280 | I32 startoff = s - SvPVX(PL_linestr); | |
2281 | #endif | |
2282 | const char *errstr = NULL; | |
2283 | ||
2284 | PERL_ARGS_ASSERT_FORCE_STRICT_VERSION; | |
2285 | ||
2286 | while (isSPACE(*s)) /* leading whitespace */ | |
2287 | s++; | |
2288 | ||
2289 | if (is_STRICT_VERSION(s,&errstr)) { | |
2290 | SV *ver = newSV(0); | |
2291 | s = (char *)scan_version(s, ver, 0); | |
2292 | version = newSVOP(OP_CONST, 0, ver); | |
2293 | } | |
4e4da3ac Z |
2294 | else if ( (*s != ';' && *s != '{' && *s != '}' ) && |
2295 | (s = SKIPSPACE1(s), (*s != ';' && *s != '{' && *s != '}' ))) | |
2296 | { | |
91152fc1 DG |
2297 | PL_bufptr = s; |
2298 | if (errstr) | |
2299 | yyerror(errstr); /* version required */ | |
2300 | return s; | |
2301 | } | |
2302 | ||
2303 | #ifdef PERL_MAD | |
2304 | if (PL_madskills && !version) { | |
2305 | sv_free(PL_nextwhite); /* let next token collect whitespace */ | |
2306 | PL_nextwhite = 0; | |
2307 | s = SvPVX(PL_linestr) + startoff; | |
2308 | } | |
2309 | #endif | |
2310 | /* NOTE: The parser sees the package name and the VERSION swapped */ | |
2311 | start_force(PL_curforce); | |
2312 | NEXTVAL_NEXTTOKE.opval = version; | |
2313 | force_next(WORD); | |
2314 | ||
2315 | return s; | |
2316 | } | |
2317 | ||
2318 | /* | |
ffb4593c NT |
2319 | * S_tokeq |
2320 | * Tokenize a quoted string passed in as an SV. It finds the next | |
2321 | * chunk, up to end of string or a backslash. It may make a new | |
2322 | * SV containing that chunk (if HINT_NEW_STRING is on). It also | |
2323 | * turns \\ into \. | |
2324 | */ | |
2325 | ||
76e3520e | 2326 | STATIC SV * |
cea2e8a9 | 2327 | S_tokeq(pTHX_ SV *sv) |
79072805 | 2328 | { |
97aff369 | 2329 | dVAR; |
eb578fdb KW |
2330 | char *s; |
2331 | char *send; | |
2332 | char *d; | |
b3ac6de7 IZ |
2333 | STRLEN len = 0; |
2334 | SV *pv = sv; | |
79072805 | 2335 | |
7918f24d NC |
2336 | PERL_ARGS_ASSERT_TOKEQ; |
2337 | ||
79072805 | 2338 | if (!SvLEN(sv)) |
b3ac6de7 | 2339 | goto finish; |
79072805 | 2340 | |
a0d0e21e | 2341 | s = SvPV_force(sv, len); |
21a311ee | 2342 | if (SvTYPE(sv) >= SVt_PVIV && SvIVX(sv) == -1) |
b3ac6de7 | 2343 | goto finish; |
463ee0b2 | 2344 | send = s + len; |
dcb21ed6 NC |
2345 | /* This is relying on the SV being "well formed" with a trailing '\0' */ |
2346 | while (s < send && !(*s == '\\' && s[1] == '\\')) | |
79072805 LW |
2347 | s++; |
2348 | if (s == send) | |
b3ac6de7 | 2349 | goto finish; |
79072805 | 2350 | d = s; |
be4731d2 | 2351 | if ( PL_hints & HINT_NEW_STRING ) { |
59cd0e26 | 2352 | pv = newSVpvn_flags(SvPVX_const(pv), len, SVs_TEMP | SvUTF8(sv)); |
be4731d2 | 2353 | } |
79072805 LW |
2354 | while (s < send) { |
2355 | if (*s == '\\') { | |
a0d0e21e | 2356 | if (s + 1 < send && (s[1] == '\\')) |
79072805 LW |
2357 | s++; /* all that, just for this */ |
2358 | } | |
2359 | *d++ = *s++; | |
2360 | } | |
2361 | *d = '\0'; | |
95a20fc0 | 2362 | SvCUR_set(sv, d - SvPVX_const(sv)); |
b3ac6de7 | 2363 | finish: |
3280af22 | 2364 | if ( PL_hints & HINT_NEW_STRING ) |
eb0d8d16 | 2365 | return new_constant(NULL, 0, "q", sv, pv, "q", 1); |
79072805 LW |
2366 | return sv; |
2367 | } | |
2368 | ||
ffb4593c NT |
2369 | /* |
2370 | * Now come three functions related to double-quote context, | |
2371 | * S_sublex_start, S_sublex_push, and S_sublex_done. They're used when | |
2372 | * converting things like "\u\Lgnat" into ucfirst(lc("gnat")). They | |
2373 | * interact with PL_lex_state, and create fake ( ... ) argument lists | |
2374 | * to handle functions and concatenation. | |
ecd24171 DM |
2375 | * For example, |
2376 | * "foo\lbar" | |
2377 | * is tokenised as | |
2378 | * stringify ( const[foo] concat lcfirst ( const[bar] ) ) | |
ffb4593c NT |
2379 | */ |
2380 | ||
2381 | /* | |
2382 | * S_sublex_start | |
6154021b | 2383 | * Assumes that pl_yylval.ival is the op we're creating (e.g. OP_LCFIRST). |
ffb4593c NT |
2384 | * |
2385 | * Pattern matching will set PL_lex_op to the pattern-matching op to | |
6154021b | 2386 | * make (we return THING if pl_yylval.ival is OP_NULL, PMFUNC otherwise). |
ffb4593c NT |
2387 | * |
2388 | * OP_CONST and OP_READLINE are easy--just make the new op and return. | |
2389 | * | |
2390 | * Everything else becomes a FUNC. | |
2391 | * | |
2392 | * Sets PL_lex_state to LEX_INTERPPUSH unless (ival was OP_NULL or we | |
2393 | * had an OP_CONST or OP_READLINE). This just sets us up for a | |
2394 | * call to S_sublex_push(). | |
2395 | */ | |
2396 | ||
76e3520e | 2397 | STATIC I32 |
cea2e8a9 | 2398 | S_sublex_start(pTHX) |
79072805 | 2399 | { |
97aff369 | 2400 | dVAR; |
eb578fdb | 2401 | const I32 op_type = pl_yylval.ival; |
79072805 LW |
2402 | |
2403 | if (op_type == OP_NULL) { | |
6154021b | 2404 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2405 | PL_lex_op = NULL; |
79072805 LW |
2406 | return THING; |
2407 | } | |
2408 | if (op_type == OP_CONST || op_type == OP_READLINE) { | |
3280af22 | 2409 | SV *sv = tokeq(PL_lex_stuff); |
b3ac6de7 IZ |
2410 | |
2411 | if (SvTYPE(sv) == SVt_PVIV) { | |
2412 | /* Overloaded constants, nothing fancy: Convert to SVt_PV: */ | |
2413 | STRLEN len; | |
96a5add6 | 2414 | const char * const p = SvPV_const(sv, len); |
740cce10 | 2415 | SV * const nsv = newSVpvn_flags(p, len, SvUTF8(sv)); |
b3ac6de7 IZ |
2416 | SvREFCNT_dec(sv); |
2417 | sv = nsv; | |
4e553d73 | 2418 | } |
6154021b | 2419 | pl_yylval.opval = (OP*)newSVOP(op_type, 0, sv); |
a0714e2c | 2420 | PL_lex_stuff = NULL; |
6f33ba73 RGS |
2421 | /* Allow <FH> // "foo" */ |
2422 | if (op_type == OP_READLINE) | |
2423 | PL_expect = XTERMORDORDOR; | |
79072805 LW |
2424 | return THING; |
2425 | } | |
e3f73d4e RGS |
2426 | else if (op_type == OP_BACKTICK && PL_lex_op) { |
2427 | /* readpipe() vas overriden */ | |
2428 | cSVOPx(cLISTOPx(cUNOPx(PL_lex_op)->op_first)->op_first->op_sibling)->op_sv = tokeq(PL_lex_stuff); | |
6154021b | 2429 | pl_yylval.opval = PL_lex_op; |
9b201d7d | 2430 | PL_lex_op = NULL; |
e3f73d4e RGS |
2431 | PL_lex_stuff = NULL; |
2432 | return THING; | |
2433 | } | |
79072805 | 2434 | |
3280af22 | 2435 | PL_sublex_info.super_state = PL_lex_state; |
eac04b2e | 2436 | PL_sublex_info.sub_inwhat = (U16)op_type; |
3280af22 NIS |
2437 | PL_sublex_info.sub_op = PL_lex_op; |
2438 | PL_lex_state = LEX_INTERPPUSH; | |
55497cff | 2439 | |
3280af22 NIS |
2440 | PL_expect = XTERM; |
2441 | if (PL_lex_op) { | |
6154021b | 2442 | pl_yylval.opval = PL_lex_op; |
5f66b61c | 2443 | PL_lex_op = NULL; |
55497cff | 2444 | return PMFUNC; |
2445 | } | |
2446 | else | |
2447 | return FUNC; | |
2448 | } | |
2449 | ||
ffb4593c NT |
2450 | /* |
2451 | * S_sublex_push | |
2452 | * Create a new scope to save the lexing state. The scope will be | |
2453 | * ended in S_sublex_done. Returns a '(', starting the function arguments | |
2454 | * to the uc, lc, etc. found before. | |
2455 | * Sets PL_lex_state to LEX_INTERPCONCAT. | |
2456 | */ | |
2457 | ||
76e3520e | 2458 | STATIC I32 |
cea2e8a9 | 2459 | S_sublex_push(pTHX) |
55497cff | 2460 | { |
27da23d5 | 2461 | dVAR; |
78a635de | 2462 | LEXSHARED *shared; |
f46d017c | 2463 | ENTER; |
55497cff | 2464 | |
3280af22 | 2465 | PL_lex_state = PL_sublex_info.super_state; |
651b5b28 | 2466 | SAVEBOOL(PL_lex_dojoin); |
3280af22 | 2467 | SAVEI32(PL_lex_brackets); |
78cdf107 | 2468 | SAVEI32(PL_lex_allbrackets); |
b27dce25 | 2469 | SAVEI32(PL_lex_formbrack); |
78cdf107 | 2470 | SAVEI8(PL_lex_fakeeof); |
3280af22 NIS |
2471 | SAVEI32(PL_lex_casemods); |
2472 | SAVEI32(PL_lex_starts); | |
651b5b28 | 2473 | SAVEI8(PL_lex_state); |
7cc34111 | 2474 | SAVESPTR(PL_lex_repl); |
7766f137 | 2475 | SAVEVPTR(PL_lex_inpat); |
98246f1e | 2476 | SAVEI16(PL_lex_inwhat); |
57843af0 | 2477 | SAVECOPLINE(PL_curcop); |
3280af22 | 2478 | SAVEPPTR(PL_bufptr); |
8452ff4b | 2479 | SAVEPPTR(PL_bufend); |
3280af22 NIS |
2480 | SAVEPPTR(PL_oldbufptr); |
2481 | SAVEPPTR(PL_oldoldbufptr); | |
207e3d1a JH |
2482 | SAVEPPTR(PL_last_lop); |
2483 | SAVEPPTR(PL_last_uni); | |
3280af22 NIS |
2484 | SAVEPPTR(PL_linestart); |
2485 | SAVESPTR(PL_linestr); | |
8edd5f42 RGS |
2486 | SAVEGENERICPV(PL_lex_brackstack); |
2487 | SAVEGENERICPV(PL_lex_casestack); | |
78a635de | 2488 | SAVEGENERICPV(PL_parser->lex_shared); |
3280af22 | 2489 | |
99bd9d90 | 2490 | /* The here-doc parser needs to be able to peek into outer lexing |
60f40a38 FC |
2491 | scopes to find the body of the here-doc. So we put PL_linestr and |
2492 | PL_bufptr into lex_shared, to ‘share’ those values. | |
99bd9d90 | 2493 | */ |
60f40a38 FC |
2494 | PL_parser->lex_shared->ls_linestr = PL_linestr; |
2495 | PL_parser->lex_shared->ls_bufptr = PL_bufptr; | |
99bd9d90 | 2496 | |
3280af22 | 2497 | PL_linestr = PL_lex_stuff; |
7cc34111 | 2498 | PL_lex_repl = PL_sublex_info.repl; |
a0714e2c | 2499 | PL_lex_stuff = NULL; |
7cc34111 | 2500 | PL_sublex_info.repl = NULL; |
3280af22 | 2501 | |
9cbb5ea2 GS |
2502 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart |
2503 | = SvPVX(PL_linestr); | |
3280af22 | 2504 | PL_bufend += SvCUR(PL_linestr); |
bd61b366 | 2505 | PL_last_lop = PL_last_uni = NULL; |
3280af22 | 2506 | SAVEFREESV(PL_linestr); |
4dc843bc | 2507 | if (PL_lex_repl) SAVEFREESV(PL_lex_repl); |
3280af22 NIS |
2508 | |
2509 | PL_lex_dojoin = FALSE; | |
b27dce25 | 2510 | PL_lex_brackets = PL_lex_formbrack = 0; |
78cdf107 Z |
2511 | PL_lex_allbrackets = 0; |
2512 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
a02a5408 JC |
2513 | Newx(PL_lex_brackstack, 120, char); |
2514 | Newx(PL_lex_casestack, 12, char); | |
3280af22 NIS |
2515 | PL_lex_casemods = 0; |
2516 | *PL_lex_casestack = '\0'; | |
2517 | PL_lex_starts = 0; | |
2518 | PL_lex_state = LEX_INTERPCONCAT; | |
eb160463 | 2519 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
78a635de FC |
2520 | |
2521 | Newxz(shared, 1, LEXSHARED); | |
2522 | shared->ls_prev = PL_parser->lex_shared; | |
2523 | PL_parser->lex_shared = shared; | |
3280af22 NIS |
2524 | |
2525 | PL_lex_inwhat = PL_sublex_info.sub_inwhat; | |
bb16bae8 | 2526 | if (PL_lex_inwhat == OP_TRANSR) PL_lex_inwhat = OP_TRANS; |
3280af22 NIS |
2527 | if (PL_lex_inwhat == OP_MATCH || PL_lex_inwhat == OP_QR || PL_lex_inwhat == OP_SUBST) |
2528 | PL_lex_inpat = PL_sublex_info.sub_op; | |
79072805 | 2529 | else |
5f66b61c | 2530 | PL_lex_inpat = NULL; |
79072805 | 2531 | |
55497cff | 2532 | return '('; |
79072805 LW |
2533 | } |
2534 | ||
ffb4593c NT |
2535 | /* |
2536 | * S_sublex_done | |
2537 | * Restores lexer state after a S_sublex_push. | |
2538 | */ | |
2539 | ||
76e3520e | 2540 | STATIC I32 |
cea2e8a9 | 2541 | S_sublex_done(pTHX) |
79072805 | 2542 | { |
27da23d5 | 2543 | dVAR; |
3280af22 | 2544 | if (!PL_lex_starts++) { |
396482e1 | 2545 | SV * const sv = newSVpvs(""); |
9aa983d2 JH |
2546 | if (SvUTF8(PL_linestr)) |
2547 | SvUTF8_on(sv); | |
3280af22 | 2548 | PL_expect = XOPERATOR; |
6154021b | 2549 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
79072805 LW |
2550 | return THING; |
2551 | } | |
2552 | ||
3280af22 NIS |
2553 | if (PL_lex_casemods) { /* oops, we've got some unbalanced parens */ |
2554 | PL_lex_state = LEX_INTERPCASEMOD; | |
cea2e8a9 | 2555 | return yylex(); |
79072805 LW |
2556 | } |
2557 | ||
ffb4593c | 2558 | /* Is there a right-hand side to take care of? (s//RHS/ or tr//RHS/) */ |
bb16bae8 | 2559 | assert(PL_lex_inwhat != OP_TRANSR); |
3280af22 NIS |
2560 | if (PL_lex_repl && (PL_lex_inwhat == OP_SUBST || PL_lex_inwhat == OP_TRANS)) { |
2561 | PL_linestr = PL_lex_repl; | |
2562 | PL_lex_inpat = 0; | |
2563 | PL_bufend = PL_bufptr = PL_oldbufptr = PL_oldoldbufptr = PL_linestart = SvPVX(PL_linestr); | |
2564 | PL_bufend += SvCUR(PL_linestr); | |
bd61b366 | 2565 | PL_last_lop = PL_last_uni = NULL; |
3280af22 NIS |
2566 | PL_lex_dojoin = FALSE; |
2567 | PL_lex_brackets = 0; | |
78cdf107 Z |
2568 | PL_lex_allbrackets = 0; |
2569 | PL_lex_fakeeof = LEX_FAKEEOF_NEVER; | |
3280af22 NIS |
2570 | PL_lex_casemods = 0; |
2571 | *PL_lex_casestack = '\0'; | |
2572 | PL_lex_starts = 0; | |
25da4f38 | 2573 | if (SvEVALED(PL_lex_repl)) { |
3280af22 NIS |
2574 | PL_lex_state = LEX_INTERPNORMAL; |
2575 | PL_lex_starts++; | |
e9fa98b2 HS |
2576 | /* we don't clear PL_lex_repl here, so that we can check later |
2577 | whether this is an evalled subst; that means we rely on the | |
2578 | logic to ensure sublex_done() is called again only via the | |
2579 | branch (in yylex()) that clears PL_lex_repl, else we'll loop */ | |
79072805 | 2580 | } |
e9fa98b2 | 2581 | else { |
3280af22 | 2582 | PL_lex_state = LEX_INTERPCONCAT; |
a0714e2c | 2583 | PL_lex_repl = NULL; |
e9fa98b2 | 2584 | } |
79072805 | 2585 | return ','; |
ffed7fef LW |
2586 | } |
2587 | else { | |
5db06880 NC |
2588 | #ifdef PERL_MAD |
2589 | if (PL_madskills) { | |
cd81e915 NC |
2590 | if (PL_thiswhite) { |
2591 | if (!PL_endwhite) | |
6b29d1f5 | 2592 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
2593 | sv_catsv(PL_endwhite, PL_thiswhite); |
2594 | PL_thiswhite = 0; | |
2595 | } | |
2596 | if (PL_thistoken) | |
76f68e9b | 2597 | sv_setpvs(PL_thistoken,""); |
5db06880 | 2598 | else |
cd81e915 | 2599 | PL_realtokenstart = -1; |
5db06880 NC |
2600 | } |
2601 | #endif | |
f46d017c | 2602 | LEAVE; |
3280af22 NIS |
2603 | PL_bufend = SvPVX(PL_linestr); |
2604 | PL_bufend += SvCUR(PL_linestr); | |
2605 | PL_expect = XOPERATOR; | |
09bef843 | 2606 | PL_sublex_info.sub_inwhat = 0; |
79072805 | 2607 | return ')'; |
ffed7fef LW |
2608 | } |
2609 | } | |
2610 | ||
02aa26ce NT |
2611 | /* |
2612 | scan_const | |
2613 | ||
9da1dd8f DM |
2614 | Extracts the next constant part of a pattern, double-quoted string, |
2615 | or transliteration. This is terrifying code. | |
2616 | ||
2617 | For example, in parsing the double-quoted string "ab\x63$d", it would | |
2618 | stop at the '$' and return an OP_CONST containing 'abc'. | |
02aa26ce | 2619 | |
94def140 | 2620 | It looks at PL_lex_inwhat and PL_lex_inpat to find out whether it's |
3280af22 | 2621 | processing a pattern (PL_lex_inpat is true), a transliteration |
94def140 | 2622 | (PL_lex_inwhat == OP_TRANS is true), or a double-quoted string. |
02aa26ce | 2623 | |
94def140 TS |
2624 | Returns a pointer to the character scanned up to. If this is |
2625 | advanced from the start pointer supplied (i.e. if anything was | |
9da1dd8f | 2626 | successfully parsed), will leave an OP_CONST for the substring scanned |
6154021b | 2627 | in pl_yylval. Caller must intuit reason for not parsing further |
9b599b2a GS |
2628 | by looking at the next characters herself. |
2629 | ||
02aa26ce | 2630 | In patterns: |
9da1dd8f DM |
2631 | expand: |
2632 | \N{ABC} => \N{U+41.42.43} | |
2633 | ||
2634 | pass through: | |
2635 | all other \-char, including \N and \N{ apart from \N{ABC} | |
2636 | ||
2637 | stops on: | |
2638 | @ and $ where it appears to be a var, but not for $ as tail anchor | |
2639 | \l \L \u \U \Q \E | |
2640 | (?{ or (??{ | |
2641 | ||
02aa26ce NT |
2642 | |
2643 | In transliterations: | |
2644 | characters are VERY literal, except for - not at the start or end | |
94def140 TS |
2645 | of the string, which indicates a range. If the range is in bytes, |
2646 | scan_const expands the range to the full set of intermediate | |
2647 | characters. If the range is in utf8, the hyphen is replaced with | |
2648 | a certain range mark which will be handled by pmtrans() in op.c. | |
02aa26ce NT |
2649 | |
2650 | In double-quoted strings: | |
2651 | backslashes: | |
2652 | double-quoted style: \r and \n | |
ff3f963a | 2653 | constants: \x31, etc. |
94def140 | 2654 | deprecated backrefs: \1 (in substitution replacements) |
02aa26ce NT |
2655 | case and quoting: \U \Q \E |
2656 | stops on @ and $ | |
2657 | ||
2658 | scan_const does *not* construct ops to handle interpolated strings. | |
2659 | It stops processing as soon as it finds an embedded $ or @ variable | |
2660 | and leaves it to the caller to work out what's going on. | |
2661 | ||
94def140 TS |
2662 | embedded arrays (whether in pattern or not) could be: |
2663 | @foo, @::foo, @'foo, @{foo}, @$foo, @+, @-. | |
2664 | ||
2665 | $ in double-quoted strings must be the symbol of an embedded scalar. | |
02aa26ce NT |
2666 | |
2667 | $ in pattern could be $foo or could be tail anchor. Assumption: | |
2668 | it's a tail anchor if $ is the last thing in the string, or if it's | |
94def140 | 2669 | followed by one of "()| \r\n\t" |
02aa26ce | 2670 | |
9da1dd8f | 2671 | \1 (backreferences) are turned into $1 in substitutions |
02aa26ce NT |
2672 | |
2673 | The structure of the code is | |
2674 | while (there's a character to process) { | |
94def140 TS |
2675 | handle transliteration ranges |
2676 | skip regexp comments /(?#comment)/ and codes /(?{code})/ | |
2677 | skip #-initiated comments in //x patterns | |
2678 | check for embedded arrays | |
02aa26ce NT |
2679 | check for embedded scalars |
2680 | if (backslash) { | |
94def140 | 2681 | deprecate \1 in substitution replacements |
02aa26ce NT |
2682 | handle string-changing backslashes \l \U \Q \E, etc. |
2683 | switch (what was escaped) { | |
94def140 | 2684 | handle \- in a transliteration (becomes a literal -) |
ff3f963a | 2685 | if a pattern and not \N{, go treat as regular character |
94def140 TS |
2686 | handle \132 (octal characters) |
2687 | handle \x15 and \x{1234} (hex characters) | |
ff3f963a | 2688 | handle \N{name} (named characters, also \N{3,5} in a pattern) |
94def140 TS |
2689 | handle \cV (control characters) |
2690 | handle printf-style backslashes (\f, \r, \n, etc) | |
02aa26ce | 2691 | } (end switch) |
77a135fe | 2692 | continue |
02aa26ce | 2693 | } (end if backslash) |
77a135fe | 2694 | handle regular character |
02aa26ce | 2695 | } (end while character to read) |
4e553d73 | 2696 | |
02aa26ce NT |
2697 | */ |
2698 | ||
76e3520e | 2699 | STATIC char * |
cea2e8a9 | 2700 | S_scan_const(pTHX_ char *start) |
79072805 | 2701 | { |
97aff369 | 2702 | dVAR; |
eb578fdb | 2703 | char *send = PL_bufend; /* end of the constant */ |
77a135fe KW |
2704 | SV *sv = newSV(send - start); /* sv for the constant. See |
2705 | note below on sizing. */ | |
eb578fdb KW |
2706 | char *s = start; /* start of the constant */ |
2707 | char *d = SvPVX(sv); /* destination for copies */ | |
02aa26ce | 2708 | bool dorange = FALSE; /* are we in a translit range? */ |
c2e66d9e | 2709 | bool didrange = FALSE; /* did we just finish a range? */ |
2866decb | 2710 | bool in_charclass = FALSE; /* within /[...]/ */ |
b953e60c KW |
2711 | bool has_utf8 = FALSE; /* Output constant is UTF8 */ |
2712 | bool this_utf8 = cBOOL(UTF); /* Is the source string assumed | |
77a135fe KW |
2713 | to be UTF8? But, this can |
2714 | show as true when the source | |
2715 | isn't utf8, as for example | |
2716 | when it is entirely composed | |
2717 | of hex constants */ | |
2718 | ||
2719 | /* Note on sizing: The scanned constant is placed into sv, which is | |
2720 | * initialized by newSV() assuming one byte of output for every byte of | |
2721 | * input. This routine expects newSV() to allocate an extra byte for a | |
2722 | * trailing NUL, which this routine will append if it gets to the end of | |
2723 | * the input. There may be more bytes of input than output (eg., \N{LATIN | |
2724 | * CAPITAL LETTER A}), or more output than input if the constant ends up | |
2725 | * recoded to utf8, but each time a construct is found that might increase | |
2726 | * the needed size, SvGROW() is called. Its size parameter each time is | |
2727 | * based on the best guess estimate at the time, namely the length used so | |
2728 | * far, plus the length the current construct will occupy, plus room for | |
2729 | * the trailing NUL, plus one byte for every input byte still unscanned */ | |
2730 | ||
012bcf8d | 2731 | UV uv; |
4c3a8340 TS |
2732 | #ifdef EBCDIC |
2733 | UV literal_endpoint = 0; | |
e294cc5d | 2734 | bool native_range = TRUE; /* turned to FALSE if the first endpoint is Unicode. */ |
4c3a8340 | 2735 | #endif |
012bcf8d | 2736 | |
7918f24d NC |
2737 | PERL_ARGS_ASSERT_SCAN_CONST; |
2738 | ||
bb16bae8 | 2739 | assert(PL_lex_inwhat != OP_TRANSR); |
2b9d42f0 NIS |
2740 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
2741 | /* If we are doing a trans and we know we want UTF8 set expectation */ | |
2742 | has_utf8 = PL_sublex_info.sub_op->op_private & (OPpTRANS_FROM_UTF|OPpTRANS_TO_UTF); | |
2743 | this_utf8 = PL_sublex_info.sub_op->op_private & (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); | |
2744 | } | |
2745 | ||
2746 | ||
79072805 | 2747 | while (s < send || dorange) { |
ff3f963a | 2748 | |
02aa26ce | 2749 | /* get transliterations out of the way (they're most literal) */ |
3280af22 | 2750 | if (PL_lex_inwhat == OP_TRANS) { |
02aa26ce | 2751 | /* expand a range A-Z to the full set of characters. AIE! */ |
79072805 | 2752 | if (dorange) { |
1ba5c669 JH |
2753 | I32 i; /* current expanded character */ |
2754 | I32 min; /* first character in range */ | |
2755 | I32 max; /* last character in range */ | |
02aa26ce | 2756 | |
e294cc5d JH |
2757 | #ifdef EBCDIC |
2758 | UV uvmax = 0; | |
2759 | #endif | |
2760 | ||
2761 | if (has_utf8 | |
2762 | #ifdef EBCDIC | |
2763 | && !native_range | |
2764 | #endif | |
2765 | ) { | |
9d4ba2ae | 2766 | char * const c = (char*)utf8_hop((U8*)d, -1); |
8973db79 JH |
2767 | char *e = d++; |
2768 | while (e-- > c) | |
2769 | *(e + 1) = *e; | |
25716404 | 2770 | *c = (char)UTF_TO_NATIVE(0xff); |
8973db79 JH |
2771 | /* mark the range as done, and continue */ |
2772 | dorange = FALSE; | |
2773 | didrange = TRUE; | |
2774 | continue; | |
2775 | } | |
2b9d42f0 | 2776 | |
95a20fc0 | 2777 | i = d - SvPVX_const(sv); /* remember current offset */ |
e294cc5d JH |
2778 | #ifdef EBCDIC |
2779 | SvGROW(sv, | |
2780 | SvLEN(sv) + (has_utf8 ? | |
2781 | (512 - UTF_CONTINUATION_MARK + | |
2782 | UNISKIP(0x100)) | |
2783 | : 256)); | |
2784 | /* How many two-byte within 0..255: 128 in UTF-8, | |
2785 | * 96 in UTF-8-mod. */ | |
2786 | #else | |
9cbb5ea2 | 2787 | SvGROW(sv, SvLEN(sv) + 256); /* never more than 256 chars in a range */ |
e294cc5d | 2788 | #endif |
9cbb5ea2 | 2789 | d = SvPVX(sv) + i; /* refresh d after realloc */ |
e294cc5d JH |
2790 | #ifdef EBCDIC |
2791 | if (has_utf8) { | |
2792 | int j; | |
2793 | for (j = 0; j <= 1; j++) { | |
2794 | char * const c = (char*)utf8_hop((U8*)d, -1); | |
2795 | const UV uv = utf8n_to_uvchr((U8*)c, d - c, NULL, 0); | |
2796 | if (j) | |
2797 | min = (U8)uv; | |
2798 | else if (uv < 256) | |
2799 | max = (U8)uv; | |
2800 | else { | |
2801 | max = (U8)0xff; /* only to \xff */ | |
2802 | uvmax = uv; /* \x{100} to uvmax */ | |
2803 | } | |
2804 | d = c; /* eat endpoint chars */ | |
2805 | } | |
2806 | } | |
2807 | else { | |
2808 | #endif | |
2809 | d -= 2; /* eat the first char and the - */ | |
2810 | min = (U8)*d; /* first char in range */ | |
2811 | max = (U8)d[1]; /* last char in range */ | |
2812 | #ifdef EBCDIC | |
2813 | } | |
2814 | #endif | |
8ada0baa | 2815 | |
c2e66d9e | 2816 | if (min > max) { |
4dc843bc | 2817 | SvREFCNT_dec(sv); |
01ec43d0 | 2818 | Perl_croak(aTHX_ |
d1573ac7 | 2819 | "Invalid range \"%c-%c\" in transliteration operator", |
1ba5c669 | 2820 | (char)min, (char)max); |
c2e66d9e GS |
2821 | } |
2822 | ||
c7f1f016 | 2823 | #ifdef EBCDIC |
4c3a8340 TS |
2824 | if (literal_endpoint == 2 && |
2825 | ((isLOWER(min) && isLOWER(max)) || | |
2826 | (isUPPER(min) && isUPPER(max)))) { | |
8ada0baa JH |
2827 | if (isLOWER(min)) { |
2828 | for (i = min; i <= max; i++) | |
2829 | if (isLOWER(i)) | |
db42d148 | 2830 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
2831 | } else { |
2832 | for (i = min; i <= max; i++) | |
2833 | if (isUPPER(i)) | |
db42d148 | 2834 | *d++ = NATIVE_TO_NEED(has_utf8,i); |
8ada0baa JH |
2835 | } |
2836 | } | |
2837 | else | |
2838 | #endif | |
2839 | for (i = min; i <= max; i++) | |
e294cc5d JH |
2840 | #ifdef EBCDIC |
2841 | if (has_utf8) { | |
2842 | const U8 ch = (U8)NATIVE_TO_UTF(i); | |
2843 | if (UNI_IS_INVARIANT(ch)) | |
2844 | *d++ = (U8)i; | |
2845 | else { | |
2846 | *d++ = (U8)UTF8_EIGHT_BIT_HI(ch); | |
2847 | *d++ = (U8)UTF8_EIGHT_BIT_LO(ch); | |
2848 | } | |
2849 | } | |
2850 | else | |
2851 | #endif | |
2852 | *d++ = (char)i; | |
2853 | ||
2854 | #ifdef EBCDIC | |
2855 | if (uvmax) { | |
2856 | d = (char*)uvchr_to_utf8((U8*)d, 0x100); | |
2857 | if (uvmax > 0x101) | |
2858 | *d++ = (char)UTF_TO_NATIVE(0xff); | |
2859 | if (uvmax > 0x100) | |
2860 | d = (char*)uvchr_to_utf8((U8*)d, uvmax); | |
2861 | } | |
2862 | #endif | |
02aa26ce NT |
2863 | |
2864 | /* mark the range as done, and continue */ | |
79072805 | 2865 | dorange = FALSE; |
01ec43d0 | 2866 | didrange = TRUE; |
4c3a8340 TS |
2867 | #ifdef EBCDIC |
2868 | literal_endpoint = 0; | |
2869 | #endif | |
79072805 | 2870 | continue; |
4e553d73 | 2871 | } |
02aa26ce NT |
2872 | |
2873 | /* range begins (ignore - as first or last char) */ | |
79072805 | 2874 | else if (*s == '-' && s+1 < send && s != start) { |
4e553d73 | 2875 | if (didrange) { |
4dc843bc | 2876 | SvREFCNT_dec(sv); |
1fafa243 | 2877 | Perl_croak(aTHX_ "Ambiguous range in transliteration operator"); |
01ec43d0 | 2878 | } |
e294cc5d JH |
2879 | if (has_utf8 |
2880 | #ifdef EBCDIC | |
2881 | && !native_range | |
2882 | #endif | |
2883 | ) { | |
25716404 | 2884 | *d++ = (char)UTF_TO_NATIVE(0xff); /* use illegal utf8 byte--see pmtrans */ |
a0ed51b3 LW |
2885 | s++; |
2886 | continue; | |
2887 | } | |
79072805 LW |
2888 | dorange = TRUE; |
2889 | s++; | |
01ec43d0 GS |
2890 | } |
2891 | else { | |
2892 | didrange = FALSE; | |
4c3a8340 TS |
2893 | #ifdef EBCDIC |
2894 | literal_endpoint = 0; | |
e294cc5d | 2895 | native_range = TRUE; |
4c3a8340 | 2896 | #endif |
01ec43d0 | 2897 | } |
79072805 | 2898 | } |
02aa26ce NT |
2899 | |
2900 | /* if we get here, we're not doing a transliteration */ | |
2901 | ||
e4a2df84 DM |
2902 | else if (*s == '[' && PL_lex_inpat && !in_charclass) { |
2903 | char *s1 = s-1; | |
2904 | int esc = 0; | |
2905 | while (s1 >= start && *s1-- == '\\') | |
2906 | esc = !esc; | |
2907 | if (!esc) | |
2908 | in_charclass = TRUE; | |
2909 | } | |
2866decb | 2910 | |
e4a2df84 DM |
2911 | else if (*s == ']' && PL_lex_inpat && in_charclass) { |
2912 | char *s1 = s-1; | |
2913 | int esc = 0; | |
2914 | while (s1 >= start && *s1-- == '\\') | |
2915 | esc = !esc; | |
2916 | if (!esc) | |
2917 | in_charclass = FALSE; | |
2918 | } | |
2866decb | 2919 | |
9da1dd8f DM |
2920 | /* skip for regexp comments /(?#comment)/, except for the last |
2921 | * char, which will be done separately. | |
2922 | * Stop on (?{..}) and friends */ | |
2923 | ||
3280af22 | 2924 | else if (*s == '(' && PL_lex_inpat && s[1] == '?') { |
cc6b7395 | 2925 | if (s[2] == '#') { |
e994fd66 | 2926 | while (s+1 < send && *s != ')') |
db42d148 | 2927 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
155aba94 | 2928 | } |
2866decb | 2929 | else if (!PL_lex_casemods && !in_charclass && |
d3cec5e5 DM |
2930 | ( s[2] == '{' /* This should match regcomp.c */ |
2931 | || (s[2] == '?' && s[3] == '{'))) | |
155aba94 | 2932 | { |
9da1dd8f | 2933 | break; |
cc6b7395 | 2934 | } |
748a9306 | 2935 | } |
02aa26ce NT |
2936 | |
2937 | /* likewise skip #-initiated comments in //x patterns */ | |
3280af22 | 2938 | else if (*s == '#' && PL_lex_inpat && |
73134a2e | 2939 | ((PMOP*)PL_lex_inpat)->op_pmflags & RXf_PMf_EXTENDED) { |
748a9306 | 2940 | while (s+1 < send && *s != '\n') |
db42d148 | 2941 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); |
748a9306 | 2942 | } |
02aa26ce | 2943 | |
9da1dd8f DM |
2944 | /* no further processing of single-quoted regex */ |
2945 | else if (PL_lex_inpat && SvIVX(PL_linestr) == '\'') | |
2946 | goto default_action; | |
2947 | ||
5d1d4326 | 2948 | /* check for embedded arrays |
da6eedaa | 2949 | (@foo, @::foo, @'foo, @{foo}, @$foo, @+, @-) |
5d1d4326 | 2950 | */ |
1749ea0d TS |
2951 | else if (*s == '@' && s[1]) { |
2952 | if (isALNUM_lazy_if(s+1,UTF)) | |
2953 | break; | |
2954 | if (strchr(":'{$", s[1])) | |
2955 | break; | |
2956 | if (!PL_lex_inpat && (s[1] == '+' || s[1] == '-')) | |
2957 | break; /* in regexp, neither @+ nor @- are interpolated */ | |
2958 | } | |
02aa26ce NT |
2959 | |
2960 | /* check for embedded scalars. only stop if we're sure it's a | |
2961 | variable. | |
2962 | */ | |
79072805 | 2963 | else if (*s == '$') { |
3280af22 | 2964 | if (!PL_lex_inpat) /* not a regexp, so $ must be var */ |
79072805 | 2965 | break; |
77772344 | 2966 | if (s + 1 < send && !strchr("()| \r\n\t", s[1])) { |
a2a5de95 NC |
2967 | if (s[1] == '\\') { |
2968 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
2969 | "Possible unintended interpolation of $\\ in regex"); | |
77772344 | 2970 | } |
79072805 | 2971 | break; /* in regexp, $ might be tail anchor */ |
77772344 | 2972 | } |
79072805 | 2973 | } |
02aa26ce | 2974 | |
2b9d42f0 NIS |
2975 | /* End of else if chain - OP_TRANS rejoin rest */ |
2976 | ||
02aa26ce | 2977 | /* backslashes */ |
79072805 | 2978 | if (*s == '\\' && s+1 < send) { |
ff3f963a KW |
2979 | char* e; /* Can be used for ending '}', etc. */ |
2980 | ||
79072805 | 2981 | s++; |
02aa26ce | 2982 | |
7d0fc23c KW |
2983 | /* warn on \1 - \9 in substitution replacements, but note that \11 |
2984 | * is an octal; and \19 is \1 followed by '9' */ | |
3280af22 | 2985 | if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat && |
a0d0e21e | 2986 | isDIGIT(*s) && *s != '0' && !isDIGIT(s[1])) |
79072805 | 2987 | { |
a2a5de95 | 2988 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "\\%c better written as $%c", *s, *s); |
79072805 LW |
2989 | *--s = '$'; |
2990 | break; | |
2991 | } | |
02aa26ce NT |
2992 | |
2993 | /* string-change backslash escapes */ | |
838f2281 | 2994 | if (PL_lex_inwhat != OP_TRANS && *s && strchr("lLuUEQF", *s)) { |
79072805 LW |
2995 | --s; |
2996 | break; | |
2997 | } | |
ff3f963a KW |
2998 | /* In a pattern, process \N, but skip any other backslash escapes. |
2999 | * This is because we don't want to translate an escape sequence | |
3000 | * into a meta symbol and have the regex compiler use the meta | |
3001 | * symbol meaning, e.g. \x{2E} would be confused with a dot. But | |
3002 | * in spite of this, we do have to process \N here while the proper | |
3003 | * charnames handler is in scope. See bugs #56444 and #62056. | |
3004 | * There is a complication because \N in a pattern may also stand | |
3005 | * for 'match a non-nl', and not mean a charname, in which case its | |
3006 | * processing should be deferred to the regex compiler. To be a | |
3007 | * charname it must be followed immediately by a '{', and not look | |
3008 | * like \N followed by a curly quantifier, i.e., not something like | |
3009 | * \N{3,}. regcurly returns a boolean indicating if it is a legal | |
3010 | * quantifier */ | |
3011 | else if (PL_lex_inpat | |
3012 | && (*s != 'N' | |
3013 | || s[1] != '{' | |
3014 | || regcurly(s + 1))) | |
3015 | { | |
cc74c5bd TS |
3016 | *d++ = NATIVE_TO_NEED(has_utf8,'\\'); |
3017 | goto default_action; | |
3018 | } | |
02aa26ce | 3019 | |
79072805 | 3020 | switch (*s) { |
02aa26ce NT |
3021 | |
3022 | /* quoted - in transliterations */ | |
79072805 | 3023 | case '-': |
3280af22 | 3024 | if (PL_lex_inwhat == OP_TRANS) { |
79072805 LW |
3025 | *d++ = *s++; |
3026 | continue; | |
3027 | } | |
3028 | /* FALL THROUGH */ | |
3029 | default: | |
11b8faa4 | 3030 | { |
e4ca4584 | 3031 | if ((isALNUMC(*s))) |
a2a5de95 NC |
3032 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), |
3033 | "Unrecognized escape \\%c passed through", | |
3034 | *s); | |
11b8faa4 | 3035 | /* default action is to copy the quoted character */ |
f9a63242 | 3036 | goto default_action; |
11b8faa4 | 3037 | } |
02aa26ce | 3038 | |
632403cc | 3039 | /* eg. \132 indicates the octal constant 0132 */ |
79072805 LW |
3040 | case '0': case '1': case '2': case '3': |
3041 | case '4': case '5': case '6': case '7': | |
ba210ebe | 3042 | { |
53305cf1 NC |
3043 | I32 flags = 0; |
3044 | STRLEN len = 3; | |
77a135fe | 3045 | uv = NATIVE_TO_UNI(grok_oct(s, &len, &flags, NULL)); |
ba210ebe JH |
3046 | s += len; |
3047 | } | |
012bcf8d | 3048 | goto NUM_ESCAPE_INSERT; |
02aa26ce | 3049 | |
f0a2b745 KW |
3050 | /* eg. \o{24} indicates the octal constant \024 */ |
3051 | case 'o': | |
3052 | { | |
3053 | STRLEN len; | |
454155d9 | 3054 | const char* error; |
f0a2b745 | 3055 | |
454155d9 | 3056 | bool valid = grok_bslash_o(s, &uv, &len, &error, 1); |
f0a2b745 | 3057 | s += len; |
454155d9 | 3058 | if (! valid) { |
f0a2b745 KW |
3059 | yyerror(error); |
3060 | continue; | |
3061 | } | |
3062 | goto NUM_ESCAPE_INSERT; | |
3063 | } | |
3064 | ||
77a135fe | 3065 | /* eg. \x24 indicates the hex constant 0x24 */ |
79072805 | 3066 | case 'x': |
a0481293 | 3067 | { |
53305cf1 | 3068 | STRLEN len; |
a0481293 | 3069 | const char* error; |
355860ce | 3070 | |
a0481293 KW |
3071 | bool valid = grok_bslash_x(s, &uv, &len, &error, 1); |
3072 | s += len; | |
3073 | if (! valid) { | |
3074 | yyerror(error); | |
355860ce | 3075 | continue; |
ba210ebe | 3076 | } |
012bcf8d GS |
3077 | } |
3078 | ||
3079 | NUM_ESCAPE_INSERT: | |
ff3f963a KW |
3080 | /* Insert oct or hex escaped character. There will always be |
3081 | * enough room in sv since such escapes will be longer than any | |
3082 | * UTF-8 sequence they can end up as, except if they force us | |
3083 | * to recode the rest of the string into utf8 */ | |
ba7cea30 | 3084 | |
77a135fe | 3085 | /* Here uv is the ordinal of the next character being added in |
ff3f963a | 3086 | * unicode (converted from native). */ |
77a135fe | 3087 | if (!UNI_IS_INVARIANT(uv)) { |
9aa983d2 | 3088 | if (!has_utf8 && uv > 255) { |
77a135fe KW |
3089 | /* Might need to recode whatever we have accumulated so |
3090 | * far if it contains any chars variant in utf8 or | |
3091 | * utf-ebcdic. */ | |
3092 | ||
3093 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3094 | SvPOK_on(sv); | |
3095 | *d = '\0'; | |
77a135fe | 3096 | /* See Note on sizing above. */ |
7bf79863 KW |
3097 | sv_utf8_upgrade_flags_grow(sv, |
3098 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3099 | UNISKIP(uv) + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3100 | d = SvPVX(sv) + SvCUR(sv); |
3101 | has_utf8 = TRUE; | |
012bcf8d GS |
3102 | } |
3103 | ||
77a135fe KW |
3104 | if (has_utf8) { |
3105 | d = (char*)uvuni_to_utf8((U8*)d, uv); | |
f9a63242 JH |
3106 | if (PL_lex_inwhat == OP_TRANS && |
3107 | PL_sublex_info.sub_op) { | |
3108 | PL_sublex_info.sub_op->op_private |= | |
3109 | (PL_lex_repl ? OPpTRANS_FROM_UTF | |
3110 | : OPpTRANS_TO_UTF); | |
f9a63242 | 3111 | } |
e294cc5d JH |
3112 | #ifdef EBCDIC |
3113 | if (uv > 255 && !dorange) | |
3114 | native_range = FALSE; | |
3115 | #endif | |
012bcf8d | 3116 | } |
a0ed51b3 | 3117 | else { |
012bcf8d | 3118 | *d++ = (char)uv; |
a0ed51b3 | 3119 | } |
012bcf8d GS |
3120 | } |
3121 | else { | |
c4d5f83a | 3122 | *d++ = (char) uv; |
a0ed51b3 | 3123 | } |
79072805 | 3124 | continue; |
02aa26ce | 3125 | |
4a2d328f | 3126 | case 'N': |
ff3f963a KW |
3127 | /* In a non-pattern \N must be a named character, like \N{LATIN |
3128 | * SMALL LETTER A} or \N{U+0041}. For patterns, it also can | |
3129 | * mean to match a non-newline. For non-patterns, named | |
3130 | * characters are converted to their string equivalents. In | |
3131 | * patterns, named characters are not converted to their | |
3132 | * ultimate forms for the same reasons that other escapes | |
3133 | * aren't. Instead, they are converted to the \N{U+...} form | |
3134 | * to get the value from the charnames that is in effect right | |
3135 | * now, while preserving the fact that it was a named character | |
3136 | * so that the regex compiler knows this */ | |
3137 | ||
3138 | /* This section of code doesn't generally use the | |
3139 | * NATIVE_TO_NEED() macro to transform the input. I (khw) did | |
3140 | * a close examination of this macro and determined it is a | |
3141 | * no-op except on utfebcdic variant characters. Every | |
3142 | * character generated by this that would normally need to be | |
3143 | * enclosed by this macro is invariant, so the macro is not | |
7538f724 KW |
3144 | * needed, and would complicate use of copy(). XXX There are |
3145 | * other parts of this file where the macro is used | |
3146 | * inconsistently, but are saved by it being a no-op */ | |
ff3f963a KW |
3147 | |
3148 | /* The structure of this section of code (besides checking for | |
3149 | * errors and upgrading to utf8) is: | |
3150 | * Further disambiguate between the two meanings of \N, and if | |
3151 | * not a charname, go process it elsewhere | |
0a96133f KW |
3152 | * If of form \N{U+...}, pass it through if a pattern; |
3153 | * otherwise convert to utf8 | |
3154 | * Otherwise must be \N{NAME}: convert to \N{U+c1.c2...} if a | |
3155 | * pattern; otherwise convert to utf8 */ | |
ff3f963a KW |
3156 | |
3157 | /* Here, s points to the 'N'; the test below is guaranteed to | |
3158 | * succeed if we are being called on a pattern as we already | |
3159 | * know from a test above that the next character is a '{'. | |
3160 | * On a non-pattern \N must mean 'named sequence, which | |
3161 | * requires braces */ | |
3162 | s++; | |
3163 | if (*s != '{') { | |
3164 | yyerror("Missing braces on \\N{}"); | |
3165 | continue; | |
3166 | } | |
3167 | s++; | |
3168 | ||
0a96133f | 3169 | /* If there is no matching '}', it is an error. */ |
ff3f963a KW |
3170 | if (! (e = strchr(s, '}'))) { |
3171 | if (! PL_lex_inpat) { | |
5777a3f7 | 3172 | yyerror("Missing right brace on \\N{}"); |
0a96133f KW |
3173 | } else { |
3174 | yyerror("Missing right brace on \\N{} or unescaped left brace after \\N."); | |
dbc0d4f2 | 3175 | } |
0a96133f | 3176 | continue; |
ff3f963a | 3177 | } |
cddc7ef4 | 3178 | |
ff3f963a | 3179 | /* Here it looks like a named character */ |
cddc7ef4 | 3180 | |
ff3f963a KW |
3181 | if (PL_lex_inpat) { |
3182 | ||
3183 | /* XXX This block is temporary code. \N{} implies that the | |
3184 | * pattern is to have Unicode semantics, and therefore | |
3185 | * currently has to be encoded in utf8. By putting it in | |
3186 | * utf8 now, we save a whole pass in the regular expression | |
3187 | * compiler. Once that code is changed so Unicode | |
3188 | * semantics doesn't necessarily have to be in utf8, this | |
da3a4baf KW |
3189 | * block should be removed. However, the code that parses |
3190 | * the output of this would have to be changed to not | |
3191 | * necessarily expect utf8 */ | |
ff3f963a | 3192 | if (!has_utf8) { |
77a135fe | 3193 | SvCUR_set(sv, d - SvPVX_const(sv)); |
f08d6ad9 | 3194 | SvPOK_on(sv); |
e4f3eed8 | 3195 | *d = '\0'; |
77a135fe | 3196 | /* See Note on sizing above. */ |
7bf79863 | 3197 | sv_utf8_upgrade_flags_grow(sv, |
ff3f963a KW |
3198 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, |
3199 | /* 5 = '\N{' + cur char + NUL */ | |
3200 | (STRLEN)(send - s) + 5); | |
f08d6ad9 | 3201 | d = SvPVX(sv) + SvCUR(sv); |
89491803 | 3202 | has_utf8 = TRUE; |
ff3f963a KW |
3203 | } |
3204 | } | |
423cee85 | 3205 | |
ff3f963a KW |
3206 | if (*s == 'U' && s[1] == '+') { /* \N{U+...} */ |
3207 | I32 flags = PERL_SCAN_ALLOW_UNDERSCORES | |
3208 | | PERL_SCAN_DISALLOW_PREFIX; | |
3209 | STRLEN len; | |
3210 | ||
3211 | /* For \N{U+...}, the '...' is a unicode value even on | |
3212 | * EBCDIC machines */ | |
3213 | s += 2; /* Skip to next char after the 'U+' */ | |
3214 | len = e - s; | |
3215 | uv = grok_hex(s, &len, &flags, NULL); | |
3216 | if (len == 0 || len != (STRLEN)(e - s)) { | |
3217 | yyerror("Invalid hexadecimal number in \\N{U+...}"); | |
3218 | s = e + 1; | |
3219 | continue; | |
3220 | } | |
3221 | ||
3222 | if (PL_lex_inpat) { | |
3223 | ||
e2a7e165 KW |
3224 | /* On non-EBCDIC platforms, pass through to the regex |
3225 | * compiler unchanged. The reason we evaluated the | |
3226 | * number above is to make sure there wasn't a syntax | |
3227 | * error. But on EBCDIC we convert to native so | |
3228 | * downstream code can continue to assume it's native | |
3229 | */ | |
ff3f963a | 3230 | s -= 5; /* Include the '\N{U+' */ |
e2a7e165 KW |
3231 | #ifdef EBCDIC |
3232 | d += my_snprintf(d, e - s + 1 + 1, /* includes the } | |
3233 | and the \0 */ | |
3234 | "\\N{U+%X}", | |
3235 | (unsigned int) UNI_TO_NATIVE(uv)); | |
3236 | #else | |
ff3f963a KW |
3237 | Copy(s, d, e - s + 1, char); /* 1 = include the } */ |
3238 | d += e - s + 1; | |
e2a7e165 | 3239 | #endif |
ff3f963a KW |
3240 | } |
3241 | else { /* Not a pattern: convert the hex to string */ | |
3242 | ||
3243 | /* If destination is not in utf8, unconditionally | |
3244 | * recode it to be so. This is because \N{} implies | |
3245 | * Unicode semantics, and scalars have to be in utf8 | |
3246 | * to guarantee those semantics */ | |
3247 | if (! has_utf8) { | |
3248 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3249 | SvPOK_on(sv); | |
3250 | *d = '\0'; | |
3251 | /* See Note on sizing above. */ | |
3252 | sv_utf8_upgrade_flags_grow( | |
3253 | sv, | |
3254 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3255 | UNISKIP(uv) + (STRLEN)(send - e) + 1); | |
3256 | d = SvPVX(sv) + SvCUR(sv); | |
3257 | has_utf8 = TRUE; | |
3258 | } | |
3259 | ||
3260 | /* Add the string to the output */ | |
3261 | if (UNI_IS_INVARIANT(uv)) { | |
3262 | *d++ = (char) uv; | |
3263 | } | |
3264 | else d = (char*)uvuni_to_utf8((U8*)d, uv); | |
3265 | } | |
3266 | } | |
3267 | else { /* Here is \N{NAME} but not \N{U+...}. */ | |
3268 | ||
3269 | SV *res; /* result from charnames */ | |
3270 | const char *str; /* the string in 'res' */ | |
3271 | STRLEN len; /* its length */ | |
3272 | ||
3273 | /* Get the value for NAME */ | |
3274 | res = newSVpvn(s, e - s); | |
3275 | res = new_constant( NULL, 0, "charnames", | |
3276 | /* includes all of: \N{...} */ | |
3277 | res, NULL, s - 3, e - s + 4 ); | |
3278 | ||
3279 | /* Most likely res will be in utf8 already since the | |
3280 | * standard charnames uses pack U, but a custom translator | |
3281 | * can leave it otherwise, so make sure. XXX This can be | |
3282 | * revisited to not have charnames use utf8 for characters | |
3283 | * that don't need it when regexes don't have to be in utf8 | |
3284 | * for Unicode semantics. If doing so, remember EBCDIC */ | |
3285 | sv_utf8_upgrade(res); | |
3286 | str = SvPV_const(res, len); | |
3287 | ||
3288 | /* Don't accept malformed input */ | |
3289 | if (! is_utf8_string((U8 *) str, len)) { | |
3290 | yyerror("Malformed UTF-8 returned by \\N"); | |
3291 | } | |
3292 | else if (PL_lex_inpat) { | |
3293 | ||
3294 | if (! len) { /* The name resolved to an empty string */ | |
3295 | Copy("\\N{}", d, 4, char); | |
3296 | d += 4; | |
3297 | } | |
3298 | else { | |
3299 | /* In order to not lose information for the regex | |
3300 | * compiler, pass the result in the specially made | |
3301 | * syntax: \N{U+c1.c2.c3...}, where c1 etc. are | |
3302 | * the code points in hex of each character | |
3303 | * returned by charnames */ | |
3304 | ||
3305 | const char *str_end = str + len; | |
3306 | STRLEN char_length; /* cur char's byte length */ | |
3307 | STRLEN output_length; /* and the number of bytes | |
3308 | after this is translated | |
3309 | into hex digits */ | |
3310 | const STRLEN off = d - SvPVX_const(sv); | |
3311 | ||
3312 | /* 2 hex per byte; 2 chars for '\N'; 2 chars for | |
3313 | * max('U+', '.'); and 1 for NUL */ | |
3314 | char hex_string[2 * UTF8_MAXBYTES + 5]; | |
3315 | ||
3316 | /* Get the first character of the result. */ | |
3317 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3318 | len, | |
3319 | &char_length, | |
3320 | UTF8_ALLOW_ANYUV); | |
3321 | ||
3322 | /* The call to is_utf8_string() above hopefully | |
3323 | * guarantees that there won't be an error. But | |
3324 | * it's easy here to make sure. The function just | |
3325 | * above warns and returns 0 if invalid utf8, but | |
3326 | * it can also return 0 if the input is validly a | |
3327 | * NUL. Disambiguate */ | |
3328 | if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') { | |
3329 | uv = UNICODE_REPLACEMENT; | |
3330 | } | |
3331 | ||
3332 | /* Convert first code point to hex, including the | |
e2a7e165 KW |
3333 | * boiler plate before it. For all these, we |
3334 | * convert to native format so that downstream code | |
3335 | * can continue to assume the input is native */ | |
78c35590 | 3336 | output_length = |
3353de27 | 3337 | my_snprintf(hex_string, sizeof(hex_string), |
e2a7e165 KW |
3338 | "\\N{U+%X", |
3339 | (unsigned int) UNI_TO_NATIVE(uv)); | |
ff3f963a KW |
3340 | |
3341 | /* Make sure there is enough space to hold it */ | |
3342 | d = off + SvGROW(sv, off | |
3343 | + output_length | |
3344 | + (STRLEN)(send - e) | |
3345 | + 2); /* '}' + NUL */ | |
3346 | /* And output it */ | |
3347 | Copy(hex_string, d, output_length, char); | |
3348 | d += output_length; | |
3349 | ||
3350 | /* For each subsequent character, append dot and | |
3351 | * its ordinal in hex */ | |
3352 | while ((str += char_length) < str_end) { | |
3353 | const STRLEN off = d - SvPVX_const(sv); | |
3354 | U32 uv = utf8n_to_uvuni((U8 *) str, | |
3355 | str_end - str, | |
3356 | &char_length, | |
3357 | UTF8_ALLOW_ANYUV); | |
3358 | if (uv == 0 && NATIVE_TO_ASCII(*str) != '\0') { | |
3359 | uv = UNICODE_REPLACEMENT; | |
3360 | } | |
3361 | ||
78c35590 | 3362 | output_length = |
3353de27 | 3363 | my_snprintf(hex_string, sizeof(hex_string), |
e2a7e165 KW |
3364 | ".%X", |
3365 | (unsigned int) UNI_TO_NATIVE(uv)); | |
ff3f963a KW |
3366 | |
3367 | d = off + SvGROW(sv, off | |
3368 | + output_length | |
3369 | + (STRLEN)(send - e) | |
3370 | + 2); /* '}' + NUL */ | |
3371 | Copy(hex_string, d, output_length, char); | |
3372 | d += output_length; | |
3373 | } | |
3374 | ||
3375 | *d++ = '}'; /* Done. Add the trailing brace */ | |
3376 | } | |
3377 | } | |
3378 | else { /* Here, not in a pattern. Convert the name to a | |
3379 | * string. */ | |
3380 | ||
3381 | /* If destination is not in utf8, unconditionally | |
3382 | * recode it to be so. This is because \N{} implies | |
3383 | * Unicode semantics, and scalars have to be in utf8 | |
3384 | * to guarantee those semantics */ | |
3385 | if (! has_utf8) { | |
3386 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3387 | SvPOK_on(sv); | |
3388 | *d = '\0'; | |
3389 | /* See Note on sizing above. */ | |
3390 | sv_utf8_upgrade_flags_grow(sv, | |
3391 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3392 | len + (STRLEN)(send - s) + 1); | |
3393 | d = SvPVX(sv) + SvCUR(sv); | |
3394 | has_utf8 = TRUE; | |
3395 | } else if (len > (STRLEN)(e - s + 4)) { /* I _guess_ 4 is \N{} --jhi */ | |
3396 | ||
3397 | /* See Note on sizing above. (NOTE: SvCUR() is not | |
3398 | * set correctly here). */ | |
3399 | const STRLEN off = d - SvPVX_const(sv); | |
3400 | d = off + SvGROW(sv, off + len + (STRLEN)(send - s) + 1); | |
3401 | } | |
3402 | Copy(str, d, len, char); | |
3403 | d += len; | |
423cee85 | 3404 | } |
423cee85 | 3405 | SvREFCNT_dec(res); |
cb233ae3 KW |
3406 | |
3407 | /* Deprecate non-approved name syntax */ | |
3408 | if (ckWARN_d(WARN_DEPRECATED)) { | |
3409 | bool problematic = FALSE; | |
3410 | char* i = s; | |
3411 | ||
3412 | /* For non-ut8 input, look to see that the first | |
3413 | * character is an alpha, then loop through the rest | |
3414 | * checking that each is a continuation */ | |
3415 | if (! this_utf8) { | |
3416 | if (! isALPHAU(*i)) problematic = TRUE; | |
3417 | else for (i = s + 1; i < e; i++) { | |
3418 | if (isCHARNAME_CONT(*i)) continue; | |
3419 | problematic = TRUE; | |
3420 | break; | |
3421 | } | |
3422 | } | |
3423 | else { | |
3424 | /* Similarly for utf8. For invariants can check | |
3425 | * directly. We accept anything above the latin1 | |
3426 | * range because it is immaterial to Perl if it is | |
3427 | * correct or not, and is expensive to check. But | |
3428 | * it is fairly easy in the latin1 range to convert | |
3429 | * the variants into a single character and check | |
3430 | * those */ | |
3431 | if (UTF8_IS_INVARIANT(*i)) { | |
3432 | if (! isALPHAU(*i)) problematic = TRUE; | |
3433 | } else if (UTF8_IS_DOWNGRADEABLE_START(*i)) { | |
81c14aa2 | 3434 | if (! isALPHAU(UNI_TO_NATIVE(TWO_BYTE_UTF8_TO_UNI(*i, |
cb233ae3 KW |
3435 | *(i+1))))) |
3436 | { | |
3437 | problematic = TRUE; | |
3438 | } | |
3439 | } | |
3440 | if (! problematic) for (i = s + UTF8SKIP(s); | |
3441 | i < e; | |
3442 | i+= UTF8SKIP(i)) | |
3443 | { | |
3444 | if (UTF8_IS_INVARIANT(*i)) { | |
3445 | if (isCHARNAME_CONT(*i)) continue; | |
3446 | } else if (! UTF8_IS_DOWNGRADEABLE_START(*i)) { | |
3447 | continue; | |
3448 | } else if (isCHARNAME_CONT( | |
3449 | UNI_TO_NATIVE( | |
81c14aa2 | 3450 | TWO_BYTE_UTF8_TO_UNI(*i, *(i+1))))) |
cb233ae3 KW |
3451 | { |
3452 | continue; | |
3453 | } | |
3454 | problematic = TRUE; | |
3455 | break; | |
3456 | } | |
3457 | } | |
3458 | if (problematic) { | |
6e1bad6c KW |
3459 | /* The e-i passed to the final %.*s makes sure that |
3460 | * should the trailing NUL be missing that this | |
3461 | * print won't run off the end of the string */ | |
cb233ae3 | 3462 | Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), |
b00fc8d4 NC |
3463 | "Deprecated character in \\N{...}; marked by <-- HERE in \\N{%.*s<-- HERE %.*s", |
3464 | (int)(i - s + 1), s, (int)(e - i), i + 1); | |
cb233ae3 KW |
3465 | } |
3466 | } | |
3467 | } /* End \N{NAME} */ | |
ff3f963a KW |
3468 | #ifdef EBCDIC |
3469 | if (!dorange) | |
3470 | native_range = FALSE; /* \N{} is defined to be Unicode */ | |
3471 | #endif | |
3472 | s = e + 1; /* Point to just after the '}' */ | |
423cee85 JH |
3473 | continue; |
3474 | ||
02aa26ce | 3475 | /* \c is a control character */ |
79072805 LW |
3476 | case 'c': |
3477 | s++; | |
961ce445 | 3478 | if (s < send) { |
17a3df4c | 3479 | *d++ = grok_bslash_c(*s++, has_utf8, 1); |
ba210ebe | 3480 | } |
961ce445 RGS |
3481 | else { |
3482 | yyerror("Missing control char name in \\c"); | |
3483 | } | |
79072805 | 3484 | continue; |
02aa26ce NT |
3485 | |
3486 | /* printf-style backslashes, formfeeds, newlines, etc */ | |
79072805 | 3487 | case 'b': |
db42d148 | 3488 | *d++ = NATIVE_TO_NEED(has_utf8,'\b'); |
79072805 LW |
3489 | break; |
3490 | case 'n': | |
db42d148 | 3491 | *d++ = NATIVE_TO_NEED(has_utf8,'\n'); |
79072805 LW |
3492 | break; |
3493 | case 'r': | |
db42d148 | 3494 | *d++ = NATIVE_TO_NEED(has_utf8,'\r'); |
79072805 LW |
3495 | break; |
3496 | case 'f': | |
db42d148 | 3497 | *d++ = NATIVE_TO_NEED(has_utf8,'\f'); |
79072805 LW |
3498 | break; |
3499 | case 't': | |
db42d148 | 3500 | *d++ = NATIVE_TO_NEED(has_utf8,'\t'); |
79072805 | 3501 | break; |
34a3fe2a | 3502 | case 'e': |
db42d148 | 3503 | *d++ = ASCII_TO_NEED(has_utf8,'\033'); |
34a3fe2a PP |
3504 | break; |
3505 | case 'a': | |
db42d148 | 3506 | *d++ = ASCII_TO_NEED(has_utf8,'\007'); |
79072805 | 3507 | break; |
02aa26ce NT |
3508 | } /* end switch */ |
3509 | ||
79072805 LW |
3510 | s++; |
3511 | continue; | |
02aa26ce | 3512 | } /* end if (backslash) */ |
4c3a8340 TS |
3513 | #ifdef EBCDIC |
3514 | else | |
3515 | literal_endpoint++; | |
3516 | #endif | |
02aa26ce | 3517 | |
f9a63242 | 3518 | default_action: |
77a135fe KW |
3519 | /* If we started with encoded form, or already know we want it, |
3520 | then encode the next character */ | |
3521 | if (! NATIVE_IS_INVARIANT((U8)(*s)) && (this_utf8 || has_utf8)) { | |
2b9d42f0 | 3522 | STRLEN len = 1; |
77a135fe KW |
3523 | |
3524 | ||
3525 | /* One might think that it is wasted effort in the case of the | |
3526 | * source being utf8 (this_utf8 == TRUE) to take the next character | |
3527 | * in the source, convert it to an unsigned value, and then convert | |
3528 | * it back again. But the source has not been validated here. The | |
3529 | * routine that does the conversion checks for errors like | |
3530 | * malformed utf8 */ | |
3531 | ||
5f66b61c AL |
3532 | const UV nextuv = (this_utf8) ? utf8n_to_uvchr((U8*)s, send - s, &len, 0) : (UV) ((U8) *s); |
3533 | const STRLEN need = UNISKIP(NATIVE_TO_UNI(nextuv)); | |
77a135fe KW |
3534 | if (!has_utf8) { |
3535 | SvCUR_set(sv, d - SvPVX_const(sv)); | |
3536 | SvPOK_on(sv); | |
3537 | *d = '\0'; | |
77a135fe | 3538 | /* See Note on sizing above. */ |
7bf79863 KW |
3539 | sv_utf8_upgrade_flags_grow(sv, |
3540 | SV_GMAGIC|SV_FORCE_UTF8_UPGRADE, | |
3541 | need + (STRLEN)(send - s) + 1); | |
77a135fe KW |
3542 | d = SvPVX(sv) + SvCUR(sv); |
3543 | has_utf8 = TRUE; | |
3544 | } else if (need > len) { | |
3545 | /* encoded value larger than old, may need extra space (NOTE: | |
3546 | * SvCUR() is not set correctly here). See Note on sizing | |
3547 | * above. */ | |
9d4ba2ae | 3548 | const STRLEN off = d - SvPVX_const(sv); |
77a135fe | 3549 | d = SvGROW(sv, off + need + (STRLEN)(send - s) + 1) + off; |
2b9d42f0 | 3550 | } |
77a135fe KW |
3551 | s += len; |
3552 | ||
5f66b61c | 3553 | d = (char*)uvchr_to_utf8((U8*)d, nextuv); |
e294cc5d JH |
3554 | #ifdef EBCDIC |
3555 | if (uv > 255 && !dorange) | |
3556 | native_range = FALSE; | |
3557 | #endif | |
2b9d42f0 NIS |
3558 | } |
3559 | else { | |
3560 | *d++ = NATIVE_TO_NEED(has_utf8,*s++); | |
3561 | } | |
02aa26ce NT |
3562 | } /* while loop to process each character */ |
3563 | ||
3564 | /* terminate the string and set up the sv */ | |
79072805 | 3565 | *d = '\0'; |
95a20fc0 | 3566 | SvCUR_set(sv, d - SvPVX_const(sv)); |
2b9d42f0 | 3567 | if (SvCUR(sv) >= SvLEN(sv)) |
5637ef5b NC |
3568 | Perl_croak(aTHX_ "panic: constant overflowed allocated space, %"UVuf |
3569 | " >= %"UVuf, (UV)SvCUR(sv), (UV)SvLEN(sv)); | |
2b9d42f0 | 3570 | |
79072805 | 3571 | SvPOK_on(sv); |
9f4817db | 3572 | if (PL_encoding && !has_utf8) { |
d0063567 DK |
3573 | sv_recode_to_utf8(sv, PL_encoding); |
3574 | if (SvUTF8(sv)) | |
3575 | has_utf8 = TRUE; | |
9f4817db | 3576 | } |
2b9d42f0 | 3577 | if (has_utf8) { |
7e2040f0 | 3578 | SvUTF8_on(sv); |
2b9d42f0 | 3579 | if (PL_lex_inwhat == OP_TRANS && PL_sublex_info.sub_op) { |
d0063567 | 3580 | PL_sublex_info.sub_op->op_private |= |
2b9d42f0 NIS |
3581 | (PL_lex_repl ? OPpTRANS_FROM_UTF : OPpTRANS_TO_UTF); |
3582 | } | |
3583 | } | |
79072805 | 3584 | |
02aa26ce | 3585 | /* shrink the sv if we allocated more than we used */ |
79072805 | 3586 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
1da4ca5f | 3587 | SvPV_shrink_to_cur(sv); |
79072805 | 3588 | } |
02aa26ce | 3589 | |
6154021b | 3590 | /* return the substring (via pl_yylval) only if we parsed anything */ |
3280af22 | 3591 | if (s > PL_bufptr) { |
eb0d8d16 NC |
3592 | if ( PL_hints & ( PL_lex_inpat ? HINT_NEW_RE : HINT_NEW_STRING ) ) { |
3593 | const char *const key = PL_lex_inpat ? "qr" : "q"; | |
3594 | const STRLEN keylen = PL_lex_inpat ? 2 : 1; | |
3595 | const char *type; | |
3596 | STRLEN typelen; | |
3597 | ||
3598 | if (PL_lex_inwhat == OP_TRANS) { | |
3599 | type = "tr"; | |
3600 | typelen = 2; | |
3601 | } else if (PL_lex_inwhat == OP_SUBST && !PL_lex_inpat) { | |
3602 | type = "s"; | |
3603 | typelen = 1; | |
9da1dd8f DM |
3604 | } else if (PL_lex_inpat && SvIVX(PL_linestr) == '\'') { |
3605 | type = "q"; | |
3606 | typelen = 1; | |
eb0d8d16 NC |
3607 | } else { |
3608 | type = "qq"; | |
3609 | typelen = 2; | |
3610 | } | |
3611 | ||
3612 | sv = S_new_constant(aTHX_ start, s - start, key, keylen, sv, NULL, | |
3613 | type, typelen); | |
3614 | } | |
6154021b | 3615 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
b3ac6de7 | 3616 | } else |
8990e307 | 3617 | SvREFCNT_dec(sv); |
79072805 LW |
3618 | return s; |
3619 | } | |
3620 | ||
ffb4593c NT |
3621 | /* S_intuit_more |
3622 | * Returns TRUE if there's more to the expression (e.g., a subscript), | |
3623 | * FALSE otherwise. | |
ffb4593c NT |
3624 | * |
3625 | * It deals with "$foo[3]" and /$foo[3]/ and /$foo[0123456789$]+/ | |
3626 | * | |
3627 | * ->[ and ->{ return TRUE | |
3628 | * { and [ outside a pattern are always subscripts, so return TRUE | |
3629 | * if we're outside a pattern and it's not { or [, then return FALSE | |
3630 | * if we're in a pattern and the first char is a { | |
3631 | * {4,5} (any digits around the comma) returns FALSE | |
3632 | * if we're in a pattern and the first char is a [ | |
3633 | * [] returns FALSE | |
3634 | * [SOMETHING] has a funky algorithm to decide whether it's a | |
3635 | * character class or not. It has to deal with things like | |
3636 | * /$foo[-3]/ and /$foo[$bar]/ as well as /$foo[$\d]+/ | |
3637 | * anything else returns TRUE | |
3638 | */ | |
3639 | ||
9cbb5ea2 GS |
3640 | /* This is the one truly awful dwimmer necessary to conflate C and sed. */ |
3641 | ||
76e3520e | 3642 | STATIC int |
cea2e8a9 | 3643 | S_intuit_more(pTHX_ register char *s) |
79072805 | 3644 | { |
97aff369 | 3645 | dVAR; |
7918f24d NC |
3646 | |
3647 | PERL_ARGS_ASSERT_INTUIT_MORE; | |
3648 | ||
3280af22 | 3649 | if (PL_lex_brackets) |
79072805 LW |
3650 | return TRUE; |
3651 | if (*s == '-' && s[1] == '>' && (s[2] == '[' || s[2] == '{')) | |
3652 | return TRUE; | |
3653 | if (*s != '{' && *s != '[') | |
3654 | return FALSE; | |
3280af22 | 3655 | if (!PL_lex_inpat) |
79072805 LW |
3656 | return TRUE; |
3657 | ||
3658 | /* In a pattern, so maybe we have {n,m}. */ | |
3659 | if (*s == '{') { | |
b3155d95 | 3660 | if (regcurly(s)) { |
79072805 | 3661 | return FALSE; |
b3155d95 | 3662 | } |
79072805 | 3663 | return TRUE; |
79072805 LW |
3664 | } |
3665 | ||
3666 | /* On the other hand, maybe we have a character class */ | |
3667 | ||
3668 | s++; | |
3669 | if (*s == ']' || *s == '^') | |
3670 | return FALSE; | |
3671 | else { | |
ffb4593c | 3672 | /* this is terrifying, and it works */ |
79072805 LW |
3673 | int weight = 2; /* let's weigh the evidence */ |
3674 | char seen[256]; | |
f27ffc4a | 3675 | unsigned char un_char = 255, last_un_char; |
9d4ba2ae | 3676 | const char * const send = strchr(s,']'); |
3280af22 | 3677 | char tmpbuf[sizeof PL_tokenbuf * 4]; |
79072805 LW |
3678 | |
3679 | if (!send) /* has to be an expression */ | |
3680 | return TRUE; | |
3681 | ||
3682 | Zero(seen,256,char); | |
3683 | if (*s == '$') | |
3684 | weight -= 3; | |
3685 | else if (isDIGIT(*s)) { | |
3686 | if (s[1] != ']') { | |
3687 | if (isDIGIT(s[1]) && s[2] == ']') | |
3688 | weight -= 10; | |
3689 | } | |
3690 | else | |
3691 | weight -= 100; | |
3692 | } | |
3693 | for (; s < send; s++) { | |
3694 | last_un_char = un_char; | |
3695 | un_char = (unsigned char)*s; | |
3696 | switch (*s) { | |
3697 | case '@': | |
3698 | case '&': | |
3699 | case '$': | |
3700 | weight -= seen[un_char] * 10; | |
7e2040f0 | 3701 | if (isALNUM_lazy_if(s+1,UTF)) { |
90e5519e | 3702 | int len; |
8903cb82 | 3703 | scan_ident(s, send, tmpbuf, sizeof tmpbuf, FALSE); |
90e5519e | 3704 | len = (int)strlen(tmpbuf); |
6fbd0d97 BF |
3705 | if (len > 1 && gv_fetchpvn_flags(tmpbuf, len, |
3706 | UTF ? SVf_UTF8 : 0, SVt_PV)) | |
79072805 LW |
3707 | weight -= 100; |
3708 | else | |
3709 | weight -= 10; | |
3710 | } | |
3711 | else if (*s == '$' && s[1] && | |
93a17b20 LW |
3712 | strchr("[#!%*<>()-=",s[1])) { |
3713 | if (/*{*/ strchr("])} =",s[2])) | |
79072805 LW |
3714 | weight -= 10; |
3715 | else | |
3716 | weight -= 1; | |
3717 | } | |
3718 | break; | |
3719 | case '\\': | |
3720 | un_char = 254; | |
3721 | if (s[1]) { | |
93a17b20 | 3722 | if (strchr("wds]",s[1])) |
79072805 | 3723 | weight += 100; |
10edeb5d | 3724 | else if (seen[(U8)'\''] || seen[(U8)'"']) |
79072805 | 3725 | weight += 1; |
93a17b20 | 3726 | else if (strchr("rnftbxcav",s[1])) |
79072805 LW |
3727 | weight += 40; |
3728 | else if (isDIGIT(s[1])) { | |
3729 | weight += 40; | |
3730 | while (s[1] && isDIGIT(s[1])) | |
3731 | s++; | |
3732 | } | |
3733 | } | |
3734 | else | |
3735 | weight += 100; | |
3736 | break; | |
3737 | case '-': | |
3738 | if (s[1] == '\\') | |
3739 | weight += 50; | |
93a17b20 | 3740 | if (strchr("aA01! ",last_un_char)) |
79072805 | 3741 | weight += 30; |
93a17b20 | 3742 | if (strchr("zZ79~",s[1])) |
79072805 | 3743 | weight += 30; |
f27ffc4a GS |
3744 | if (last_un_char == 255 && (isDIGIT(s[1]) || s[1] == '$')) |
3745 | weight -= 5; /* cope with negative subscript */ | |
79072805 LW |
3746 | break; |
3747 | default: | |
3792a11b NC |
3748 | if (!isALNUM(last_un_char) |
3749 | && !(last_un_char == '$' || last_un_char == '@' | |
3750 | || last_un_char == '&') | |
3751 | && isALPHA(*s) && s[1] && isALPHA(s[1])) { | |
79072805 LW |
3752 | char *d = tmpbuf; |
3753 | while (isALPHA(*s)) | |
3754 | *d++ = *s++; | |
3755 | *d = '\0'; | |
5458a98a | 3756 | if (keyword(tmpbuf, d - tmpbuf, 0)) |
79072805 LW |
3757 | weight -= 150; |
3758 | } | |
3759 | if (un_char == last_un_char + 1) | |
3760 | weight += 5; | |
3761 | weight -= seen[un_char]; | |
3762 | break; | |
3763 | } | |
3764 | seen[un_char]++; | |
3765 | } | |
3766 | if (weight >= 0) /* probably a character class */ | |
3767 | return FALSE; | |
3768 | } | |
3769 | ||
3770 | return TRUE; | |
3771 | } | |
ffed7fef | 3772 | |
ffb4593c NT |
3773 | /* |
3774 | * S_intuit_method | |
3775 | * | |
3776 | * Does all the checking to disambiguate | |
3777 | * foo bar | |
3778 | * between foo(bar) and bar->foo. Returns 0 if not a method, otherwise | |
3779 | * FUNCMETH (bar->foo(args)) or METHOD (bar->foo args). | |
3780 | * | |
3781 | * First argument is the stuff after the first token, e.g. "bar". | |
3782 | * | |
a4fd4a89 | 3783 | * Not a method if foo is a filehandle. |
ffb4593c NT |
3784 | * Not a method if foo is a subroutine prototyped to take a filehandle. |
3785 | * Not a method if it's really "Foo $bar" | |
3786 | * Method if it's "foo $bar" | |
3787 | * Not a method if it's really "print foo $bar" | |
3788 | * Method if it's really "foo package::" (interpreted as package->foo) | |
8f8cf39c | 3789 | * Not a method if bar is known to be a subroutine ("sub bar; foo bar") |
3cb0bbe5 | 3790 | * Not a method if bar is a filehandle or package, but is quoted with |
ffb4593c NT |
3791 | * => |
3792 | */ | |
3793 | ||
76e3520e | 3794 | STATIC int |
62d55b22 | 3795 | S_intuit_method(pTHX_ char *start, GV *gv, CV *cv) |
a0d0e21e | 3796 | { |
97aff369 | 3797 | dVAR; |
a0d0e21e | 3798 | char *s = start + (*start == '$'); |
3280af22 | 3799 | char tmpbuf[sizeof PL_tokenbuf]; |
a0d0e21e LW |
3800 | STRLEN len; |
3801 | GV* indirgv; | |
5db06880 NC |
3802 | #ifdef PERL_MAD |
3803 | int soff; | |
3804 | #endif | |
a0d0e21e | 3805 | |
7918f24d NC |
3806 | PERL_ARGS_ASSERT_INTUIT_METHOD; |
3807 | ||
aca88b25 | 3808 | if (gv && SvTYPE(gv) == SVt_PVGV && GvIO(gv)) |
a0d0e21e | 3809 | return 0; |
aca88b25 | 3810 | if (cv && SvPOK(cv)) { |
8fa6a409 | 3811 | const char *proto = CvPROTO(cv); |
62d55b22 NC |
3812 | if (proto) { |
3813 | if (*proto == ';') | |
3814 | proto++; | |
3815 | if (*proto == '*') | |
3816 | return 0; | |
3817 | } | |
a0d0e21e | 3818 | } |
8903cb82 | 3819 | s = scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); |
ffb4593c NT |
3820 | /* start is the beginning of the possible filehandle/object, |
3821 | * and s is the end of it | |
3822 | * tmpbuf is a copy of it | |
3823 | */ | |
3824 | ||
a0d0e21e | 3825 | if (*start == '$') { |
39c012bc | 3826 | if (cv || PL_last_lop_op == OP_PRINT || PL_last_lop_op == OP_SAY || |
3ef1310e | 3827 | isUPPER(*PL_tokenbuf)) |
a0d0e21e | 3828 | return 0; |
5db06880 NC |
3829 | #ifdef PERL_MAD |
3830 | len = start - SvPVX(PL_linestr); | |
3831 | #endif | |
29595ff2 | 3832 | s = PEEKSPACE(s); |
f0092767 | 3833 | #ifdef PERL_MAD |
5db06880 NC |
3834 | start = SvPVX(PL_linestr) + len; |
3835 | #endif | |
3280af22 NIS |
3836 | PL_bufptr = start; |
3837 | PL_expect = XREF; | |
a0d0e21e LW |
3838 | return *s == '(' ? FUNCMETH : METHOD; |
3839 | } | |
5458a98a | 3840 | if (!keyword(tmpbuf, len, 0)) { |
c3e0f903 GS |
3841 | if (len > 2 && tmpbuf[len - 2] == ':' && tmpbuf[len - 1] == ':') { |
3842 | len -= 2; | |
3843 | tmpbuf[len] = '\0'; | |
5db06880 NC |
3844 | #ifdef PERL_MAD |
3845 | soff = s - SvPVX(PL_linestr); | |
3846 | #endif | |
c3e0f903 GS |
3847 | goto bare_package; |
3848 | } | |
38d2cf30 | 3849 | indirgv = gv_fetchpvn_flags(tmpbuf, len, ( UTF ? SVf_UTF8 : 0 ), SVt_PVCV); |
8ebc5c01 | 3850 | if (indirgv && GvCVu(indirgv)) |
a0d0e21e LW |
3851 | return 0; |
3852 | /* filehandle or package name makes it a method */ | |
39c012bc | 3853 | if (!cv || GvIO(indirgv) || gv_stashpvn(tmpbuf, len, UTF ? SVf_UTF8 : 0)) { |
5db06880 NC |
3854 | #ifdef PERL_MAD |
3855 | soff = s - SvPVX(PL_linestr); | |
3856 | #endif | |
29595ff2 | 3857 | s = PEEKSPACE(s); |
3280af22 | 3858 | if ((PL_bufend - s) >= 2 && *s == '=' && *(s+1) == '>') |
486ec47a | 3859 | return 0; /* no assumptions -- "=>" quotes bareword */ |
c3e0f903 | 3860 | bare_package: |
cd81e915 | 3861 | start_force(PL_curforce); |
9ded7720 | 3862 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, |
64142370 | 3863 | S_newSV_maybe_utf8(aTHX_ tmpbuf, len)); |
9ded7720 | 3864 | NEXTVAL_NEXTTOKE.opval->op_private = OPpCONST_BARE; |
5db06880 | 3865 | if (PL_madskills) |
38d2cf30 BF |
3866 | curmad('X', newSVpvn_flags(start,SvPVX(PL_linestr) + soff - start, |
3867 | ( UTF ? SVf_UTF8 : 0 ))); | |
3280af22 | 3868 | PL_expect = XTERM; |
a0d0e21e | 3869 | force_next(WORD); |
3280af22 | 3870 | PL_bufptr = s; |
5db06880 NC |
3871 | #ifdef PERL_MAD |
3872 | PL_bufptr = SvPVX(PL_linestr) + soff; /* restart before space */ | |
3873 | #endif | |
a0d0e21e LW |
3874 | return *s == '(' ? FUNCMETH : METHOD; |
3875 | } | |
3876 | } | |
3877 | return 0; | |
3878 | } | |
3879 | ||
16d20bd9 | 3880 | /* Encoded script support. filter_add() effectively inserts a |
4e553d73 | 3881 | * 'pre-processing' function into the current source input stream. |
16d20bd9 AD |
3882 | * Note that the filter function only applies to the current source file |
3883 | * (e.g., it will not affect files 'require'd or 'use'd by this one). | |
3884 | * | |
3885 | * The datasv parameter (which may be NULL) can be used to pass | |
3886 | * private data to this instance of the filter. The filter function | |
3887 | * can recover the SV using the FILTER_DATA macro and use it to | |
3888 | * store private buffers and state information. | |
3889 | * | |
3890 | * The supplied datasv parameter is upgraded to a PVIO type | |
4755096e | 3891 | * and the IoDIRP/IoANY field is used to store the function pointer, |
e0c19803 | 3892 | * and IOf_FAKE_DIRP is enabled on datasv to mark this as such. |
16d20bd9 AD |
3893 | * Note that IoTOP_NAME, IoFMT_NAME, IoBOTTOM_NAME, if set for |
3894 | * private use must be set using malloc'd pointers. | |
3895 | */ | |
16d20bd9 AD |
3896 | |
3897 | SV * | |
864dbfa3 | 3898 | Perl_filter_add(pTHX_ filter_t funcp, SV *datasv) |
16d20bd9 | 3899 | { |
97aff369 | 3900 | dVAR; |
f4c556ac | 3901 | if (!funcp) |
a0714e2c | 3902 | return NULL; |
f4c556ac | 3903 | |
5486870f DM |
3904 | if (!PL_parser) |
3905 | return NULL; | |
3906 | ||
f1c31c52 FC |
3907 | if (PL_parser->lex_flags & LEX_IGNORE_UTF8_HINTS) |
3908 | Perl_croak(aTHX_ "Source filters apply only to byte streams"); | |
3909 | ||
3280af22 NIS |
3910 | if (!PL_rsfp_filters) |
3911 | PL_rsfp_filters = newAV(); | |
16d20bd9 | 3912 | if (!datasv) |
561b68a9 | 3913 | datasv = newSV(0); |
862a34c6 | 3914 | SvUPGRADE(datasv, SVt_PVIO); |
8141890a | 3915 | IoANY(datasv) = FPTR2DPTR(void *, funcp); /* stash funcp into spare field */ |
e0c19803 | 3916 | IoFLAGS(datasv) |= IOf_FAKE_DIRP; |
f4c556ac | 3917 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_add func %p (%s)\n", |
55662e27 JH |
3918 | FPTR2DPTR(void *, IoANY(datasv)), |
3919 | SvPV_nolen(datasv))); | |
3280af22 NIS |
3920 | av_unshift(PL_rsfp_filters, 1); |
3921 | av_store(PL_rsfp_filters, 0, datasv) ; | |
60d63348 FC |
3922 | if ( |
3923 | !PL_parser->filtered | |
3924 | && PL_parser->lex_flags & LEX_EVALBYTES | |
3925 | && PL_bufptr < PL_bufend | |
3926 | ) { | |
3927 | const char *s = PL_bufptr; | |
3928 | while (s < PL_bufend) { | |
3929 | if (*s == '\n') { | |
3930 | SV *linestr = PL_parser->linestr; | |
3931 | char *buf = SvPVX(linestr); | |
3932 | STRLEN const bufptr_pos = PL_parser->bufptr - buf; | |
3933 | STRLEN const oldbufptr_pos = PL_parser->oldbufptr - buf; | |
3934 | STRLEN const oldoldbufptr_pos=PL_parser->oldoldbufptr-buf; | |
3935 | STRLEN const linestart_pos = PL_parser->linestart - buf; | |
3936 | STRLEN const last_uni_pos = | |
3937 | PL_parser->last_uni ? PL_parser->last_uni - buf : 0; | |
3938 | STRLEN const last_lop_pos = | |
3939 | PL_parser->last_lop ? PL_parser->last_lop - buf : 0; | |
3940 | av_push(PL_rsfp_filters, linestr); | |
3941 | PL_parser->linestr = | |
3942 | newSVpvn(SvPVX(linestr), ++s-SvPVX(linestr)); | |
3943 | buf = SvPVX(PL_parser->linestr); | |
3944 | PL_parser->bufend = buf + SvCUR(PL_parser->linestr); | |
3945 | PL_parser->bufptr = buf + bufptr_pos; | |
3946 | PL_parser->oldbufptr = buf + oldbufptr_pos; | |
3947 | PL_parser->oldoldbufptr = buf + oldoldbufptr_pos; | |
3948 | PL_parser->linestart = buf + linestart_pos; | |
3949 | if (PL_parser->last_uni) | |
3950 | PL_parser->last_uni = buf + last_uni_pos; | |
3951 | if (PL_parser->last_lop) | |
3952 | PL_parser->last_lop = buf + last_lop_pos; | |
3953 | SvLEN(linestr) = SvCUR(linestr); | |
3954 | SvCUR(linestr) = s-SvPVX(linestr); | |
3955 | PL_parser->filtered = 1; | |
3956 | break; | |
3957 | } | |
3958 | s++; | |
3959 | } | |
3960 | } | |
16d20bd9 AD |
3961 | return(datasv); |
3962 | } | |
4e553d73 | 3963 | |
16d20bd9 AD |
3964 | |
3965 | /* Delete most recently added instance of this filter function. */ | |
a0d0e21e | 3966 | void |
864dbfa3 | 3967 | Perl_filter_del(pTHX_ filter_t funcp) |
16d20bd9 | 3968 | { |
97aff369 | 3969 | dVAR; |
e0c19803 | 3970 | SV *datasv; |
24801a4b | 3971 | |
7918f24d NC |
3972 | PERL_ARGS_ASSERT_FILTER_DEL; |
3973 | ||
33073adb | 3974 | #ifdef DEBUGGING |
55662e27 JH |
3975 | DEBUG_P(PerlIO_printf(Perl_debug_log, "filter_del func %p", |
3976 | FPTR2DPTR(void*, funcp))); | |
33073adb | 3977 | #endif |
5486870f | 3978 | if (!PL_parser || !PL_rsfp_filters || AvFILLp(PL_rsfp_filters)<0) |
16d20bd9 AD |
3979 | return; |
3980 | /* if filter is on top of stack (usual case) just pop it off */ | |
e0c19803 | 3981 | datasv = FILTER_DATA(AvFILLp(PL_rsfp_filters)); |
8141890a | 3982 | if (IoANY(datasv) == FPTR2DPTR(void *, funcp)) { |
3280af22 | 3983 | sv_free(av_pop(PL_rsfp_filters)); |
e50aee73 | 3984 | |
16d20bd9 AD |
3985 | return; |
3986 | } | |
3987 | /* we need to search for the correct entry and clear it */ | |
cea2e8a9 | 3988 | Perl_die(aTHX_ "filter_del can only delete in reverse order (currently)"); |
16d20bd9 AD |
3989 | } |
3990 | ||
3991 | ||
1de9afcd RGS |
3992 | /* Invoke the idxth filter function for the current rsfp. */ |
3993 | /* maxlen 0 = read one text line */ | |
16d20bd9 | 3994 | I32 |
864dbfa3 | 3995 | Perl_filter_read(pTHX_ int idx, SV *buf_sv, int maxlen) |
a0d0e21e | 3996 | { |
97aff369 | 3997 | dVAR; |
16d20bd9 AD |
3998 | filter_t funcp; |
3999 | SV *datasv = NULL; | |
f482118e NC |
4000 | /* This API is bad. It should have been using unsigned int for maxlen. |
4001 | Not sure if we want to change the API, but if not we should sanity | |
4002 | check the value here. */ | |
60d63348 | 4003 | unsigned int correct_length |
39cd7a59 NC |
4004 | = maxlen < 0 ? |
4005 | #ifdef PERL_MICRO | |
4006 | 0x7FFFFFFF | |
4007 | #else | |
4008 | INT_MAX | |
4009 | #endif | |
4010 | : maxlen; | |
e50aee73 | 4011 | |
7918f24d NC |
4012 | PERL_ARGS_ASSERT_FILTER_READ; |
4013 | ||
5486870f | 4014 | if (!PL_parser || !PL_rsfp_filters) |
16d20bd9 | 4015 | return -1; |
1de9afcd | 4016 | if (idx > AvFILLp(PL_rsfp_filters)) { /* Any more filters? */ |
16d20bd9 AD |
4017 | /* Provide a default input filter to make life easy. */ |
4018 | /* Note that we append to the line. This is handy. */ | |
f4c556ac GS |
4019 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4020 | "filter_read %d: from rsfp\n", idx)); | |
f482118e | 4021 | if (correct_length) { |
16d20bd9 AD |
4022 | /* Want a block */ |
4023 | int len ; | |
f54cb97a | 4024 | const int old_len = SvCUR(buf_sv); |
16d20bd9 AD |
4025 | |
4026 | /* ensure buf_sv is large enough */ | |
881d8f0a | 4027 | SvGROW(buf_sv, (STRLEN)(old_len + correct_length + 1)) ; |
f482118e NC |
4028 | if ((len = PerlIO_read(PL_rsfp, SvPVX(buf_sv) + old_len, |
4029 | correct_length)) <= 0) { | |
3280af22 | 4030 | if (PerlIO_error(PL_rsfp)) |
37120919 AD |
4031 | return -1; /* error */ |
4032 | else | |
4033 | return 0 ; /* end of file */ | |
4034 | } | |
16d20bd9 | 4035 | SvCUR_set(buf_sv, old_len + len) ; |
881d8f0a | 4036 | SvPVX(buf_sv)[old_len + len] = '\0'; |
16d20bd9 AD |
4037 | } else { |
4038 | /* Want a line */ | |
3280af22 NIS |
4039 | if (sv_gets(buf_sv, PL_rsfp, SvCUR(buf_sv)) == NULL) { |
4040 | if (PerlIO_error(PL_rsfp)) | |
37120919 AD |
4041 | return -1; /* error */ |
4042 | else | |
4043 | return 0 ; /* end of file */ | |
4044 | } | |
16d20bd9 AD |
4045 | } |
4046 | return SvCUR(buf_sv); | |
4047 | } | |
4048 | /* Skip this filter slot if filter has been deleted */ | |
1de9afcd | 4049 | if ( (datasv = FILTER_DATA(idx)) == &PL_sv_undef) { |
f4c556ac GS |
4050 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4051 | "filter_read %d: skipped (filter deleted)\n", | |
4052 | idx)); | |
f482118e | 4053 | return FILTER_READ(idx+1, buf_sv, correct_length); /* recurse */ |
16d20bd9 | 4054 | } |
60d63348 FC |
4055 | if (SvTYPE(datasv) != SVt_PVIO) { |
4056 | if (correct_length) { | |
4057 | /* Want a block */ | |
4058 | const STRLEN remainder = SvLEN(datasv) - SvCUR(datasv); | |
4059 | if (!remainder) return 0; /* eof */ | |
4060 | if (correct_length > remainder) correct_length = remainder; | |
4061 | sv_catpvn(buf_sv, SvEND(datasv), correct_length); | |
4062 | SvCUR_set(datasv, SvCUR(datasv) + correct_length); | |
4063 | } else { | |
4064 | /* Want a line */ | |
4065 | const char *s = SvEND(datasv); | |
4066 | const char *send = SvPVX(datasv) + SvLEN(datasv); | |
4067 | while (s < send) { | |
4068 | if (*s == '\n') { | |
4069 | s++; | |
4070 | break; | |
4071 | } | |
4072 | s++; | |
4073 | } | |
4074 | if (s == send) return 0; /* eof */ | |
4075 | sv_catpvn(buf_sv, SvEND(datasv), s-SvEND(datasv)); | |
4076 | SvCUR_set(datasv, s-SvPVX(datasv)); | |
4077 | } | |
4078 | return SvCUR(buf_sv); | |
4079 | } | |
16d20bd9 | 4080 | /* Get function pointer hidden within datasv */ |
8141890a | 4081 | funcp = DPTR2FPTR(filter_t, IoANY(datasv)); |
f4c556ac GS |
4082 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
4083 | "filter_read %d: via function %p (%s)\n", | |
ca0270c4 | 4084 | idx, (void*)datasv, SvPV_nolen_const(datasv))); |
16d20bd9 AD |
4085 | /* Call function. The function is expected to */ |
4086 | /* call "FILTER_READ(idx+1, buf_sv)" first. */ | |
37120919 | 4087 | /* Return: <0:error, =0:eof, >0:not eof */ |
f482118e | 4088 | return (*funcp)(aTHX_ idx, buf_sv, correct_length); |
16d20bd9 AD |
4089 | } |
4090 | ||
76e3520e | 4091 | STATIC char * |
5cc814fd | 4092 | S_filter_gets(pTHX_ register SV *sv, STRLEN append) |
16d20bd9 | 4093 | { |
97aff369 | 4094 | dVAR; |
7918f24d NC |
4095 | |
4096 | PERL_ARGS_ASSERT_FILTER_GETS; | |
4097 | ||
c39cd008 | 4098 | #ifdef PERL_CR_FILTER |
3280af22 | 4099 | if (!PL_rsfp_filters) { |
c39cd008 | 4100 | filter_add(S_cr_textfilter,NULL); |
a868473f NIS |
4101 | } |
4102 | #endif | |
3280af22 | 4103 | if (PL_rsfp_filters) { |
55497cff | 4104 | if (!append) |
4105 | SvCUR_set(sv, 0); /* start with empty line */ | |
16d20bd9 AD |
4106 | if (FILTER_READ(0, sv, 0) > 0) |
4107 | return ( SvPVX(sv) ) ; | |
4108 | else | |
bd61b366 | 4109 | return NULL ; |
16d20bd9 | 4110 | } |
9d116dd7 | 4111 | else |
5cc814fd | 4112 | return (sv_gets(sv, PL_rsfp, append)); |
a0d0e21e LW |
4113 | } |
4114 | ||
01ec43d0 | 4115 | STATIC HV * |
9bde8eb0 | 4116 | S_find_in_my_stash(pTHX_ const char *pkgname, STRLEN len) |
def3634b | 4117 | { |
97aff369 | 4118 | dVAR; |
def3634b GS |
4119 | GV *gv; |
4120 | ||
7918f24d NC |
4121 | PERL_ARGS_ASSERT_FIND_IN_MY_STASH; |
4122 | ||
01ec43d0 | 4123 | if (len == 11 && *pkgname == '_' && strEQ(pkgname, "__PACKAGE__")) |
def3634b GS |
4124 | return PL_curstash; |
4125 | ||
4126 | if (len > 2 && | |
4127 | (pkgname[len - 2] == ':' && pkgname[len - 1] == ':') && | |
acc6da14 | 4128 | (gv = gv_fetchpvn_flags(pkgname, len, ( UTF ? SVf_UTF8 : 0 ), SVt_PVHV))) |
01ec43d0 GS |
4129 | { |
4130 | return GvHV(gv); /* Foo:: */ | |
def3634b GS |
4131 | } |
4132 | ||
4133 | /* use constant CLASS => 'MyClass' */ | |
acc6da14 | 4134 | gv = gv_fetchpvn_flags(pkgname, len, UTF ? SVf_UTF8 : 0, SVt_PVCV); |
c35e046a AL |
4135 | if (gv && GvCV(gv)) { |
4136 | SV * const sv = cv_const_sv(GvCV(gv)); | |
4137 | if (sv) | |
9bde8eb0 | 4138 | pkgname = SvPV_const(sv, len); |
def3634b GS |
4139 | } |
4140 | ||
acc6da14 | 4141 | return gv_stashpvn(pkgname, len, UTF ? SVf_UTF8 : 0); |
def3634b | 4142 | } |
a0d0e21e | 4143 | |
e3f73d4e RGS |
4144 | /* |
4145 | * S_readpipe_override | |
486ec47a | 4146 | * Check whether readpipe() is overridden, and generates the appropriate |
e3f73d4e RGS |
4147 | * optree, provided sublex_start() is called afterwards. |
4148 | */ | |
4149 | STATIC void | |
1d51329b | 4150 | S_readpipe_override(pTHX) |
e3f73d4e RGS |
4151 | { |
4152 | GV **gvp; | |
4153 | GV *gv_readpipe = gv_fetchpvs("readpipe", GV_NOTQUAL, SVt_PVCV); | |
6154021b | 4154 | pl_yylval.ival = OP_BACKTICK; |
e3f73d4e RGS |
4155 | if ((gv_readpipe |
4156 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe)) | |
4157 | || | |
4158 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readpipe", FALSE)) | |
d5e716f5 | 4159 | && (gv_readpipe = *gvp) && isGV_with_GP(gv_readpipe) |
e3f73d4e RGS |
4160 | && GvCVu(gv_readpipe) && GvIMPORTED_CV(gv_readpipe))) |
4161 | { | |
4162 | PL_lex_op = (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 4163 | op_append_elem(OP_LIST, |
e3f73d4e RGS |
4164 | newSVOP(OP_CONST, 0, &PL_sv_undef), /* value will be read later */ |
4165 | newCVREF(0, newGVOP(OP_GV, 0, gv_readpipe)))); | |
4166 | } | |
e3f73d4e RGS |
4167 | } |
4168 | ||
5db06880 NC |
4169 | #ifdef PERL_MAD |
4170 | /* | |
4171 | * Perl_madlex | |
4172 | * The intent of this yylex wrapper is to minimize the changes to the | |
4173 | * tokener when we aren't interested in collecting madprops. It remains | |
4174 | * to be seen how successful this strategy will be... | |
4175 | */ | |
4176 | ||
4177 | int | |
4178 | Perl_madlex(pTHX) | |
4179 | { | |
4180 | int optype; | |
4181 | char *s = PL_bufptr; | |
4182 | ||
cd81e915 NC |
4183 | /* make sure PL_thiswhite is initialized */ |
4184 | PL_thiswhite = 0; | |
4185 | PL_thismad = 0; | |
5db06880 | 4186 | |
5db06880 | 4187 | /* previous token ate up our whitespace? */ |
cd81e915 NC |
4188 | if (!PL_lasttoke && PL_nextwhite) { |
4189 | PL_thiswhite = PL_nextwhite; | |
4190 | PL_nextwhite = 0; | |
5db06880 NC |
4191 | } |
4192 | ||
4193 | /* isolate the token, and figure out where it is without whitespace */ | |
cd81e915 NC |
4194 | PL_realtokenstart = -1; |
4195 | PL_thistoken = 0; | |
5db06880 NC |
4196 | optype = yylex(); |
4197 | s = PL_bufptr; | |
cd81e915 | 4198 | assert(PL_curforce < 0); |
5db06880 | 4199 | |
cd81e915 NC |
4200 | if (!PL_thismad || PL_thismad->mad_key == '^') { /* not forced already? */ |
4201 | if (!PL_thistoken) { | |
4202 | if (PL_realtokenstart < 0 || !CopLINE(PL_curcop)) | |
6b29d1f5 | 4203 | PL_thistoken = newSVpvs(""); |
5db06880 | 4204 | else { |
c35e046a | 4205 | char * const tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
cd81e915 | 4206 | PL_thistoken = newSVpvn(tstart, s - tstart); |
5db06880 NC |
4207 | } |
4208 | } | |
cd81e915 NC |
4209 | if (PL_thismad) /* install head */ |
4210 | CURMAD('X', PL_thistoken); | |
5db06880 NC |
4211 | } |
4212 | ||
4213 | /* last whitespace of a sublex? */ | |
cd81e915 NC |
4214 | if (optype == ')' && PL_endwhite) { |
4215 | CURMAD('X', PL_endwhite); | |
5db06880 NC |
4216 | } |
4217 | ||
cd81e915 | 4218 | if (!PL_thismad) { |
5db06880 NC |
4219 | |
4220 | /* if no whitespace and we're at EOF, bail. Otherwise fake EOF below. */ | |
cd81e915 NC |
4221 | if (!PL_thiswhite && !PL_endwhite && !optype) { |
4222 | sv_free(PL_thistoken); | |
4223 | PL_thistoken = 0; | |
5db06880 NC |
4224 | return 0; |
4225 | } | |
4226 | ||
4227 | /* put off final whitespace till peg */ | |
60d63348 | 4228 | if (optype == ';' && !PL_rsfp && !PL_parser->filtered) { |
cd81e915 NC |
4229 | PL_nextwhite = PL_thiswhite; |
4230 | PL_thiswhite = 0; | |
5db06880 | 4231 | } |
cd81e915 NC |
4232 | else if (PL_thisopen) { |
4233 | CURMAD('q', PL_thisopen); | |
4234 | if (PL_thistoken) | |
4235 | sv_free(PL_thistoken); | |
4236 | PL_thistoken = 0; | |
5db06880 NC |
4237 | } |
4238 | else { | |
4239 | /* Store actual token text as madprop X */ | |
cd81e915 | 4240 | CURMAD('X', PL_thistoken); |
5db06880 NC |
4241 | } |
4242 | ||
cd81e915 | 4243 | if (PL_thiswhite) { |
5db06880 | 4244 | /* add preceding whitespace as madprop _ */ |
cd81e915 | 4245 | CURMAD('_', PL_thiswhite); |
5db06880 NC |
4246 | } |
4247 | ||
cd81e915 | 4248 | if (PL_thisstuff) { |
5db06880 | 4249 | /* add quoted material as madprop = */ |
cd81e915 | 4250 | CURMAD('=', PL_thisstuff); |
5db06880 NC |
4251 | } |
4252 | ||
cd81e915 | 4253 | if (PL_thisclose) { |
5db06880 | 4254 | /* add terminating quote as madprop Q */ |
cd81e915 | 4255 | CURMAD('Q', PL_thisclose); |
5db06880 NC |
4256 | } |
4257 | } | |
4258 | ||
4259 | /* special processing based on optype */ | |
4260 | ||
4261 | switch (optype) { | |
4262 | ||
4263 | /* opval doesn't need a TOKEN since it can already store mp */ | |
4264 | case WORD: | |
4265 | case METHOD: | |
4266 | case FUNCMETH: | |
4267 | case THING: | |
4268 | case PMFUNC: | |
4269 | case PRIVATEREF: | |
4270 | case FUNC0SUB: | |
4271 | case UNIOPSUB: | |
4272 | case LSTOPSUB: | |
5db1eb8d | 4273 | case LABEL: |
6154021b RGS |
4274 | if (pl_yylval.opval) |
4275 | append_madprops(PL_thismad, pl_yylval.opval, 0); | |
cd81e915 | 4276 | PL_thismad = 0; |
5db06880 NC |
4277 | return optype; |
4278 | ||
4279 | /* fake EOF */ | |
4280 | case 0: | |
4281 | optype = PEG; | |
cd81e915 NC |
4282 | if (PL_endwhite) { |
4283 | addmad(newMADsv('p', PL_endwhite), &PL_thismad, 0); | |
4284 | PL_endwhite = 0; | |
5db06880 NC |
4285 | } |
4286 | break; | |
4287 | ||
4288 | case ']': | |
4289 | case '}': | |
cd81e915 | 4290 | if (PL_faketokens) |
5db06880 NC |
4291 | break; |
4292 | /* remember any fake bracket that lexer is about to discard */ | |
4293 | if (PL_lex_brackets == 1 && | |
4294 | ((expectation)PL_lex_brackstack[0] & XFAKEBRACK)) | |
4295 | { | |
4296 | s = PL_bufptr; | |
4297 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4298 | s++; | |
4299 | if (*s == '}') { | |
cd81e915 NC |
4300 | PL_thiswhite = newSVpvn(PL_bufptr, ++s - PL_bufptr); |
4301 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4302 | PL_thiswhite = 0; | |
5db06880 NC |
4303 | PL_bufptr = s - 1; |
4304 | break; /* don't bother looking for trailing comment */ | |
4305 | } | |
4306 | else | |
4307 | s = PL_bufptr; | |
4308 | } | |
4309 | if (optype == ']') | |
4310 | break; | |
4311 | /* FALLTHROUGH */ | |
4312 | ||
4313 | /* attach a trailing comment to its statement instead of next token */ | |
4314 | case ';': | |
cd81e915 | 4315 | if (PL_faketokens) |
5db06880 NC |
4316 | break; |
4317 | if (PL_bufptr > PL_oldbufptr && PL_bufptr[-1] == optype) { | |
4318 | s = PL_bufptr; | |
4319 | while (s < PL_bufend && (*s == ' ' || *s == '\t')) | |
4320 | s++; | |
4321 | if (*s == '\n' || *s == '#') { | |
4322 | while (s < PL_bufend && *s != '\n') | |
4323 | s++; | |
4324 | if (s < PL_bufend) | |
4325 | s++; | |
cd81e915 NC |
4326 | PL_thiswhite = newSVpvn(PL_bufptr, s - PL_bufptr); |
4327 | addmad(newMADsv('#', PL_thiswhite), &PL_thismad, 0); | |
4328 | PL_thiswhite = 0; | |
5db06880 NC |
4329 | PL_bufptr = s; |
4330 | } | |
4331 | } | |
4332 | break; | |
4333 | ||
5db06880 NC |
4334 | /* ival */ |
4335 | default: | |
4336 | break; | |
4337 | ||
4338 | } | |
4339 | ||
4340 | /* Create new token struct. Note: opvals return early above. */ | |
6154021b | 4341 | pl_yylval.tkval = newTOKEN(optype, pl_yylval, PL_thismad); |
cd81e915 | 4342 | PL_thismad = 0; |
5db06880 NC |
4343 | return optype; |
4344 | } | |
4345 | #endif | |
4346 | ||
468aa647 | 4347 | STATIC char * |
cc6ed77d | 4348 | S_tokenize_use(pTHX_ int is_use, char *s) { |
97aff369 | 4349 | dVAR; |
7918f24d NC |
4350 | |
4351 | PERL_ARGS_ASSERT_TOKENIZE_USE; | |
4352 | ||
468aa647 RGS |
4353 | if (PL_expect != XSTATE) |
4354 | yyerror(Perl_form(aTHX_ "\"%s\" not allowed in expression", | |
4355 | is_use ? "use" : "no")); | |
52d0e95b | 4356 | PL_expect = XTERM; |
29595ff2 | 4357 | s = SKIPSPACE1(s); |
468aa647 RGS |
4358 | if (isDIGIT(*s) || (*s == 'v' && isDIGIT(s[1]))) { |
4359 | s = force_version(s, TRUE); | |
17c59fdf VP |
4360 | if (*s == ';' || *s == '}' |
4361 | || (s = SKIPSPACE1(s), (*s == ';' || *s == '}'))) { | |
cd81e915 | 4362 | start_force(PL_curforce); |
9ded7720 | 4363 | NEXTVAL_NEXTTOKE.opval = NULL; |
468aa647 RGS |
4364 | force_next(WORD); |
4365 | } | |
4366 | else if (*s == 'v') { | |
4367 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4368 | s = force_version(s, FALSE); | |
4369 | } | |
4370 | } | |
4371 | else { | |
4372 | s = force_word(s,WORD,FALSE,TRUE,FALSE); | |
4373 | s = force_version(s, FALSE); | |
4374 | } | |
6154021b | 4375 | pl_yylval.ival = is_use; |
468aa647 RGS |
4376 | return s; |
4377 | } | |
748a9306 | 4378 | #ifdef DEBUGGING |
27da23d5 | 4379 | static const char* const exp_name[] = |
09bef843 | 4380 | { "OPERATOR", "TERM", "REF", "STATE", "BLOCK", "ATTRBLOCK", |
27308ded | 4381 | "ATTRTERM", "TERMBLOCK", "TERMORDORDOR" |
09bef843 | 4382 | }; |
748a9306 | 4383 | #endif |
463ee0b2 | 4384 | |
361d9b55 Z |
4385 | #define word_takes_any_delimeter(p,l) S_word_takes_any_delimeter(p,l) |
4386 | STATIC bool | |
4387 | S_word_takes_any_delimeter(char *p, STRLEN len) | |
4388 | { | |
4389 | return (len == 1 && strchr("msyq", p[0])) || | |
4390 | (len == 2 && ( | |
4391 | (p[0] == 't' && p[1] == 'r') || | |
4392 | (p[0] == 'q' && strchr("qwxr", p[1])))); | |
4393 | } | |
4394 | ||
02aa26ce NT |
4395 | /* |
4396 | yylex | |
4397 | ||
4398 | Works out what to call the token just pulled out of the input | |
4399 | stream. The yacc parser takes care of taking the ops we return and | |
4400 | stitching them into a tree. | |
4401 | ||
4402 | Returns: | |
4403 | PRIVATEREF | |
4404 | ||
4405 | Structure: | |
4406 | if read an identifier | |
4407 | if we're in a my declaration | |
4408 | croak if they tried to say my($foo::bar) | |
4409 | build the ops for a my() declaration | |
4410 | if it's an access to a my() variable | |
4411 | are we in a sort block? | |
4412 | croak if my($a); $a <=> $b | |
4413 | build ops for access to a my() variable | |
4414 | if in a dq string, and they've said @foo and we can't find @foo | |
4415 | croak | |
4416 | build ops for a bareword | |
4417 | if we already built the token before, use it. | |
4418 | */ | |
4419 | ||
20141f0e | 4420 | |
dba4d153 JH |
4421 | #ifdef __SC__ |
4422 | #pragma segment Perl_yylex | |
4423 | #endif | |
dba4d153 | 4424 | int |
dba4d153 | 4425 | Perl_yylex(pTHX) |
20141f0e | 4426 | { |
97aff369 | 4427 | dVAR; |
eb578fdb KW |
4428 | char *s = PL_bufptr; |
4429 | char *d; | |
463ee0b2 | 4430 | STRLEN len; |
705fe0e5 FC |
4431 | bool bof = FALSE; |
4432 | U8 formbrack = 0; | |
580561a3 | 4433 | U32 fake_eof = 0; |
a687059c | 4434 | |
10edeb5d JH |
4435 | /* orig_keyword, gvp, and gv are initialized here because |
4436 | * jump to the label just_a_word_zero can bypass their | |
4437 | * initialization later. */ | |
4438 | I32 orig_keyword = 0; | |
4439 | GV *gv = NULL; | |
4440 | GV **gvp = NULL; | |
4441 | ||
bbf60fe6 | 4442 | DEBUG_T( { |
396482e1 | 4443 | SV* tmp = newSVpvs(""); |
b6007c36 DM |
4444 | PerlIO_printf(Perl_debug_log, "### %"IVdf":LEX_%s/X%s %s\n", |
4445 | (IV)CopLINE(PL_curcop), | |
4446 | lex_state_names[PL_lex_state], | |
4447 | exp_name[PL_expect], | |
4448 | pv_display(tmp, s, strlen(s), 0, 60)); | |
4449 | SvREFCNT_dec(tmp); | |
bbf60fe6 | 4450 | } ); |
02aa26ce | 4451 | |
3280af22 | 4452 | switch (PL_lex_state) { |
79072805 LW |
4453 | #ifdef COMMENTARY |
4454 | case LEX_NORMAL: /* Some compilers will produce faster */ | |
4455 | case LEX_INTERPNORMAL: /* code if we comment these out. */ | |
4456 | break; | |
4457 | #endif | |
4458 | ||
09bef843 | 4459 | /* when we've already built the next token, just pull it out of the queue */ |
79072805 | 4460 | case LEX_KNOWNEXT: |
5db06880 NC |
4461 | #ifdef PERL_MAD |
4462 | PL_lasttoke--; | |
6154021b | 4463 | pl_yylval = PL_nexttoke[PL_lasttoke].next_val; |
5db06880 | 4464 | if (PL_madskills) { |
cd81e915 | 4465 | PL_thismad = PL_nexttoke[PL_lasttoke].next_mad; |
5db06880 | 4466 | PL_nexttoke[PL_lasttoke].next_mad = 0; |
cd81e915 | 4467 | if (PL_thismad && PL_thismad->mad_key == '_') { |
daba3364 | 4468 | PL_thiswhite = MUTABLE_SV(PL_thismad->mad_val); |
cd81e915 NC |
4469 | PL_thismad->mad_val = 0; |
4470 | mad_free(PL_thismad); | |
4471 | PL_thismad = 0; | |
5db06880 NC |
4472 | } |
4473 | } | |
4474 | if (!PL_lasttoke) { | |
4475 | PL_lex_state = PL_lex_defer; | |
4476 | PL_expect = PL_lex_expect; | |
4477 | PL_lex_defer = LEX_NORMAL; | |
4478 | if (!PL_nexttoke[PL_lasttoke].next_type) | |
4479 | return yylex(); | |
4480 | } | |
4481 | #else | |
3280af22 | 4482 | PL_nexttoke--; |
6154021b | 4483 | pl_yylval = PL_nextval[PL_nexttoke]; |
3280af22 NIS |
4484 | if (!PL_nexttoke) { |
4485 | PL_lex_state = PL_lex_defer; | |
4486 | PL_expect = PL_lex_expect; | |
4487 | PL_lex_defer = LEX_NORMAL; | |
463ee0b2 | 4488 | } |
5db06880 | 4489 | #endif |
a7aaec61 Z |
4490 | { |
4491 | I32 next_type; | |
5db06880 | 4492 | #ifdef PERL_MAD |
a7aaec61 | 4493 | next_type = PL_nexttoke[PL_lasttoke].next_type; |
5db06880 | 4494 | #else |
a7aaec61 | 4495 | next_type = PL_nexttype[PL_nexttoke]; |
5db06880 | 4496 | #endif |
78cdf107 Z |
4497 | if (next_type & (7<<24)) { |
4498 | if (next_type & (1<<24)) { | |
4499 | if (PL_lex_brackets > 100) | |
4500 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
4501 | PL_lex_brackstack[PL_lex_brackets++] = | |
9d8a3661 | 4502 | (char) ((next_type >> 16) & 0xff); |
78cdf107 Z |
4503 | } |
4504 | if (next_type & (2<<24)) | |
4505 | PL_lex_allbrackets++; | |
4506 | if (next_type & (4<<24)) | |
4507 | PL_lex_allbrackets--; | |
a7aaec61 Z |
4508 | next_type &= 0xffff; |
4509 | } | |
6c7ae946 FC |
4510 | if (S_is_opval_token(next_type) && pl_yylval.opval) |
4511 | pl_yylval.opval->op_savefree = 0; /* release */ | |
3f33d153 | 4512 | return REPORT(next_type == 'p' ? pending_ident() : next_type); |
a7aaec61 | 4513 | } |
79072805 | 4514 | |
02aa26ce | 4515 | /* interpolated case modifiers like \L \U, including \Q and \E. |
3280af22 | 4516 | when we get here, PL_bufptr is at the \ |
02aa26ce | 4517 | */ |
79072805 LW |
4518 | case LEX_INTERPCASEMOD: |
4519 | #ifdef DEBUGGING | |
3280af22 | 4520 | if (PL_bufptr != PL_bufend && *PL_bufptr != '\\') |
5637ef5b NC |
4521 | Perl_croak(aTHX_ |
4522 | "panic: INTERPCASEMOD bufptr=%p, bufend=%p, *bufptr=%u", | |
4523 | PL_bufptr, PL_bufend, *PL_bufptr); | |
79072805 | 4524 | #endif |
02aa26ce | 4525 | /* handle \E or end of string */ |
3280af22 | 4526 | if (PL_bufptr == PL_bufend || PL_bufptr[1] == 'E') { |
02aa26ce | 4527 | /* if at a \E */ |
3280af22 | 4528 | if (PL_lex_casemods) { |
f54cb97a | 4529 | const char oldmod = PL_lex_casestack[--PL_lex_casemods]; |
3280af22 | 4530 | PL_lex_casestack[PL_lex_casemods] = '\0'; |
02aa26ce | 4531 | |
3792a11b | 4532 | if (PL_bufptr != PL_bufend |
838f2281 BF |
4533 | && (oldmod == 'L' || oldmod == 'U' || oldmod == 'Q' |
4534 | || oldmod == 'F')) { | |
3280af22 NIS |
4535 | PL_bufptr += 2; |
4536 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4537 | #ifdef PERL_MAD |
4538 | if (PL_madskills) | |
6b29d1f5 | 4539 | PL_thistoken = newSVpvs("\\E"); |
5db06880 | 4540 | #endif |
a0d0e21e | 4541 | } |
78cdf107 | 4542 | PL_lex_allbrackets--; |
bbf60fe6 | 4543 | return REPORT(')'); |
79072805 | 4544 | } |
52ed07f6 BF |
4545 | else if ( PL_bufptr != PL_bufend && PL_bufptr[1] == 'E' ) { |
4546 | /* Got an unpaired \E */ | |
4547 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
820438b1 | 4548 | "Useless use of \\E"); |
52ed07f6 | 4549 | } |
5db06880 NC |
4550 | #ifdef PERL_MAD |
4551 | while (PL_bufptr != PL_bufend && | |
4552 | PL_bufptr[0] == '\\' && PL_bufptr[1] == 'E') { | |
cd81e915 | 4553 | if (!PL_thiswhite) |
6b29d1f5 | 4554 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 4555 | sv_catpvn(PL_thiswhite, PL_bufptr, 2); |
5db06880 NC |
4556 | PL_bufptr += 2; |
4557 | } | |
4558 | #else | |
3280af22 NIS |
4559 | if (PL_bufptr != PL_bufend) |
4560 | PL_bufptr += 2; | |
5db06880 | 4561 | #endif |
3280af22 | 4562 | PL_lex_state = LEX_INTERPCONCAT; |
cea2e8a9 | 4563 | return yylex(); |
79072805 LW |
4564 | } |
4565 | else { | |
607df283 | 4566 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
b6007c36 | 4567 | "### Saw case modifier\n"); }); |
3280af22 | 4568 | s = PL_bufptr + 1; |
6e909404 | 4569 | if (s[1] == '\\' && s[2] == 'E') { |
5db06880 | 4570 | #ifdef PERL_MAD |
cd81e915 | 4571 | if (!PL_thiswhite) |
6b29d1f5 | 4572 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 4573 | sv_catpvn(PL_thiswhite, PL_bufptr, 4); |
5db06880 | 4574 | #endif |
89122651 | 4575 | PL_bufptr = s + 3; |
6e909404 JH |
4576 | PL_lex_state = LEX_INTERPCONCAT; |
4577 | return yylex(); | |
a0d0e21e | 4578 | } |
6e909404 | 4579 | else { |
90771dc0 | 4580 | I32 tmp; |
5db06880 NC |
4581 | if (!PL_madskills) /* when just compiling don't need correct */ |
4582 | if (strnEQ(s, "L\\u", 3) || strnEQ(s, "U\\l", 3)) | |
4583 | tmp = *s, *s = s[2], s[2] = (char)tmp; /* misordered... */ | |
838f2281 BF |
4584 | if ((*s == 'L' || *s == 'U' || *s == 'F') && |
4585 | (strchr(PL_lex_casestack, 'L') | |
4586 | || strchr(PL_lex_casestack, 'U') | |
4587 | || strchr(PL_lex_casestack, 'F'))) { | |
6e909404 | 4588 | PL_lex_casestack[--PL_lex_casemods] = '\0'; |
78cdf107 | 4589 | PL_lex_allbrackets--; |
bbf60fe6 | 4590 | return REPORT(')'); |
6e909404 JH |
4591 | } |
4592 | if (PL_lex_casemods > 10) | |
4593 | Renew(PL_lex_casestack, PL_lex_casemods + 2, char); | |
4594 | PL_lex_casestack[PL_lex_casemods++] = *s; | |
4595 | PL_lex_casestack[PL_lex_casemods] = '\0'; | |
4596 | PL_lex_state = LEX_INTERPCONCAT; | |
cd81e915 | 4597 | start_force(PL_curforce); |
9ded7720 | 4598 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4599 | force_next((2<<24)|'('); |
cd81e915 | 4600 | start_force(PL_curforce); |
6e909404 | 4601 | if (*s == 'l') |
9ded7720 | 4602 | NEXTVAL_NEXTTOKE.ival = OP_LCFIRST; |
6e909404 | 4603 | else if (*s == 'u') |
9ded7720 | 4604 | NEXTVAL_NEXTTOKE.ival = OP_UCFIRST; |
6e909404 | 4605 | else if (*s == 'L') |
9ded7720 | 4606 | NEXTVAL_NEXTTOKE.ival = OP_LC; |
6e909404 | 4607 | else if (*s == 'U') |
9ded7720 | 4608 | NEXTVAL_NEXTTOKE.ival = OP_UC; |
6e909404 | 4609 | else if (*s == 'Q') |
9ded7720 | 4610 | NEXTVAL_NEXTTOKE.ival = OP_QUOTEMETA; |
838f2281 BF |
4611 | else if (*s == 'F') |
4612 | NEXTVAL_NEXTTOKE.ival = OP_FC; | |
6e909404 | 4613 | else |
5637ef5b | 4614 | Perl_croak(aTHX_ "panic: yylex, *s=%u", *s); |
5db06880 | 4615 | if (PL_madskills) { |
a5849ce5 NC |
4616 | SV* const tmpsv = newSVpvs("\\ "); |
4617 | /* replace the space with the character we want to escape | |
4618 | */ | |
4619 | SvPVX(tmpsv)[1] = *s; | |
5db06880 NC |
4620 | curmad('_', tmpsv); |
4621 | } | |
6e909404 | 4622 | PL_bufptr = s + 1; |
a0d0e21e | 4623 | } |
79072805 | 4624 | force_next(FUNC); |
3280af22 NIS |
4625 | if (PL_lex_starts) { |
4626 | s = PL_bufptr; | |
4627 | PL_lex_starts = 0; | |
5db06880 NC |
4628 | #ifdef PERL_MAD |
4629 | if (PL_madskills) { | |
cd81e915 NC |
4630 | if (PL_thistoken) |
4631 | sv_free(PL_thistoken); | |
6b29d1f5 | 4632 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4633 | } |
4634 | #endif | |
131b3ad0 DM |
4635 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4636 | if (PL_lex_casemods == 1 && PL_lex_inpat) | |
4637 | OPERATOR(','); | |
4638 | else | |
4639 | Aop(OP_CONCAT); | |
79072805 LW |
4640 | } |
4641 | else | |
cea2e8a9 | 4642 | return yylex(); |
79072805 LW |
4643 | } |
4644 | ||
55497cff | 4645 | case LEX_INTERPPUSH: |
bbf60fe6 | 4646 | return REPORT(sublex_push()); |
55497cff | 4647 | |
79072805 | 4648 | case LEX_INTERPSTART: |
3280af22 | 4649 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4650 | return REPORT(sublex_done()); |
9da1dd8f | 4651 | DEBUG_T({ if(*PL_bufptr != '(') PerlIO_printf(Perl_debug_log, |
b6007c36 | 4652 | "### Interpolated variable\n"); }); |
3280af22 NIS |
4653 | PL_expect = XTERM; |
4654 | PL_lex_dojoin = (*PL_bufptr == '@'); | |
4655 | PL_lex_state = LEX_INTERPNORMAL; | |
4656 | if (PL_lex_dojoin) { | |
cd81e915 | 4657 | start_force(PL_curforce); |
9ded7720 | 4658 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4659 | force_next(','); |
cd81e915 | 4660 | start_force(PL_curforce); |
a0d0e21e | 4661 | force_ident("\"", '$'); |
cd81e915 | 4662 | start_force(PL_curforce); |
9ded7720 | 4663 | NEXTVAL_NEXTTOKE.ival = 0; |
79072805 | 4664 | force_next('$'); |
cd81e915 | 4665 | start_force(PL_curforce); |
9ded7720 | 4666 | NEXTVAL_NEXTTOKE.ival = 0; |
78cdf107 | 4667 | force_next((2<<24)|'('); |
cd81e915 | 4668 | start_force(PL_curforce); |
9ded7720 | 4669 | NEXTVAL_NEXTTOKE.ival = OP_JOIN; /* emulate join($", ...) */ |
79072805 LW |
4670 | force_next(FUNC); |
4671 | } | |
9da1dd8f DM |
4672 | /* Convert (?{...}) and friends to 'do {...}' */ |
4673 | if (PL_lex_inpat && *PL_bufptr == '(') { | |
3328ab5a | 4674 | PL_parser->lex_shared->re_eval_start = PL_bufptr; |
9da1dd8f DM |
4675 | PL_bufptr += 2; |
4676 | if (*PL_bufptr != '{') | |
4677 | PL_bufptr++; | |
6165f85b DM |
4678 | start_force(PL_curforce); |
4679 | /* XXX probably need a CURMAD(something) here */ | |
9da1dd8f DM |
4680 | PL_expect = XTERMBLOCK; |
4681 | force_next(DO); | |
4682 | } | |
4683 | ||
3280af22 NIS |
4684 | if (PL_lex_starts++) { |
4685 | s = PL_bufptr; | |
5db06880 NC |
4686 | #ifdef PERL_MAD |
4687 | if (PL_madskills) { | |
cd81e915 NC |
4688 | if (PL_thistoken) |
4689 | sv_free(PL_thistoken); | |
6b29d1f5 | 4690 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4691 | } |
4692 | #endif | |
131b3ad0 DM |
4693 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4694 | if (!PL_lex_casemods && PL_lex_inpat) | |
4695 | OPERATOR(','); | |
4696 | else | |
4697 | Aop(OP_CONCAT); | |
79072805 | 4698 | } |
cea2e8a9 | 4699 | return yylex(); |
79072805 LW |
4700 | |
4701 | case LEX_INTERPENDMAYBE: | |
3280af22 NIS |
4702 | if (intuit_more(PL_bufptr)) { |
4703 | PL_lex_state = LEX_INTERPNORMAL; /* false alarm, more expr */ | |
79072805 LW |
4704 | break; |
4705 | } | |
4706 | /* FALL THROUGH */ | |
4707 | ||
4708 | case LEX_INTERPEND: | |
3280af22 NIS |
4709 | if (PL_lex_dojoin) { |
4710 | PL_lex_dojoin = FALSE; | |
4711 | PL_lex_state = LEX_INTERPCONCAT; | |
5db06880 NC |
4712 | #ifdef PERL_MAD |
4713 | if (PL_madskills) { | |
cd81e915 NC |
4714 | if (PL_thistoken) |
4715 | sv_free(PL_thistoken); | |
6b29d1f5 | 4716 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4717 | } |
4718 | #endif | |
78cdf107 | 4719 | PL_lex_allbrackets--; |
bbf60fe6 | 4720 | return REPORT(')'); |
79072805 | 4721 | } |
43a16006 | 4722 | if (PL_lex_inwhat == OP_SUBST && PL_linestr == PL_lex_repl |
25da4f38 | 4723 | && SvEVALED(PL_lex_repl)) |
43a16006 | 4724 | { |
e9fa98b2 | 4725 | if (PL_bufptr != PL_bufend) |
cea2e8a9 | 4726 | Perl_croak(aTHX_ "Bad evalled substitution pattern"); |
a0714e2c | 4727 | PL_lex_repl = NULL; |
e9fa98b2 | 4728 | } |
db444266 FC |
4729 | /* Paranoia. re_eval_start is adjusted when S_scan_heredoc sets |
4730 | re_eval_str. If the here-doc body’s length equals the previous | |
4731 | value of re_eval_start, re_eval_start will now be null. So | |
4732 | check re_eval_str as well. */ | |
3328ab5a FC |
4733 | if (PL_parser->lex_shared->re_eval_start |
4734 | || PL_parser->lex_shared->re_eval_str) { | |
db444266 | 4735 | SV *sv; |
9da1dd8f DM |
4736 | if (*PL_bufptr != ')') |
4737 | Perl_croak(aTHX_ "Sequence (?{...}) not terminated with ')'"); | |
4738 | PL_bufptr++; | |
4739 | /* having compiled a (?{..}) expression, return the original | |
4740 | * text too, as a const */ | |
3328ab5a FC |
4741 | if (PL_parser->lex_shared->re_eval_str) { |
4742 | sv = PL_parser->lex_shared->re_eval_str; | |
4743 | PL_parser->lex_shared->re_eval_str = NULL; | |
4744 | SvCUR_set(sv, | |
4745 | PL_bufptr - PL_parser->lex_shared->re_eval_start); | |
db444266 FC |
4746 | SvPV_shrink_to_cur(sv); |
4747 | } | |
3328ab5a FC |
4748 | else sv = newSVpvn(PL_parser->lex_shared->re_eval_start, |
4749 | PL_bufptr - PL_parser->lex_shared->re_eval_start); | |
6165f85b DM |
4750 | start_force(PL_curforce); |
4751 | /* XXX probably need a CURMAD(something) here */ | |
4752 | NEXTVAL_NEXTTOKE.opval = | |
9da1dd8f | 4753 | (OP*)newSVOP(OP_CONST, 0, |
db444266 | 4754 | sv); |
9da1dd8f | 4755 | force_next(THING); |
3328ab5a | 4756 | PL_parser->lex_shared->re_eval_start = NULL; |
9da1dd8f DM |
4757 | PL_expect = XTERM; |
4758 | return REPORT(','); | |
4759 | } | |
4760 | ||
79072805 LW |
4761 | /* FALLTHROUGH */ |
4762 | case LEX_INTERPCONCAT: | |
4763 | #ifdef DEBUGGING | |
3280af22 | 4764 | if (PL_lex_brackets) |
5637ef5b NC |
4765 | Perl_croak(aTHX_ "panic: INTERPCONCAT, lex_brackets=%ld", |
4766 | (long) PL_lex_brackets); | |
79072805 | 4767 | #endif |
3280af22 | 4768 | if (PL_bufptr == PL_bufend) |
bbf60fe6 | 4769 | return REPORT(sublex_done()); |
79072805 | 4770 | |
9da1dd8f DM |
4771 | /* m'foo' still needs to be parsed for possible (?{...}) */ |
4772 | if (SvIVX(PL_linestr) == '\'' && !PL_lex_inpat) { | |
3280af22 | 4773 | SV *sv = newSVsv(PL_linestr); |
9da1dd8f | 4774 | sv = tokeq(sv); |
6154021b | 4775 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
3280af22 | 4776 | s = PL_bufend; |
79072805 LW |
4777 | } |
4778 | else { | |
3280af22 | 4779 | s = scan_const(PL_bufptr); |
79072805 | 4780 | if (*s == '\\') |
3280af22 | 4781 | PL_lex_state = LEX_INTERPCASEMOD; |
79072805 | 4782 | else |
3280af22 | 4783 | PL_lex_state = LEX_INTERPSTART; |
79072805 LW |
4784 | } |
4785 | ||
3280af22 | 4786 | if (s != PL_bufptr) { |
cd81e915 | 4787 | start_force(PL_curforce); |
5db06880 NC |
4788 | if (PL_madskills) { |
4789 | curmad('X', newSVpvn(PL_bufptr,s-PL_bufptr)); | |
4790 | } | |
6154021b | 4791 | NEXTVAL_NEXTTOKE = pl_yylval; |
3280af22 | 4792 | PL_expect = XTERM; |
79072805 | 4793 | force_next(THING); |
131b3ad0 | 4794 | if (PL_lex_starts++) { |
5db06880 NC |
4795 | #ifdef PERL_MAD |
4796 | if (PL_madskills) { | |
cd81e915 NC |
4797 | if (PL_thistoken) |
4798 | sv_free(PL_thistoken); | |
6b29d1f5 | 4799 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
4800 | } |
4801 | #endif | |
131b3ad0 DM |
4802 | /* commas only at base level: /$a\Ub$c/ => ($a,uc(b.$c)) */ |
4803 | if (!PL_lex_casemods && PL_lex_inpat) | |
4804 | OPERATOR(','); | |
4805 | else | |
4806 | Aop(OP_CONCAT); | |
4807 | } | |
79072805 | 4808 | else { |
3280af22 | 4809 | PL_bufptr = s; |
cea2e8a9 | 4810 | return yylex(); |
79072805 LW |
4811 | } |
4812 | } | |
4813 | ||
cea2e8a9 | 4814 | return yylex(); |
a0d0e21e | 4815 | case LEX_FORMLINE: |
3280af22 NIS |
4816 | s = scan_formline(PL_bufptr); |
4817 | if (!PL_lex_formbrack) | |
7c70caa5 | 4818 | { |
705fe0e5 | 4819 | formbrack = 1; |
a0d0e21e | 4820 | goto rightbracket; |
7c70caa5 | 4821 | } |
705fe0e5 FC |
4822 | PL_bufptr = s; |
4823 | return yylex(); | |
79072805 LW |
4824 | } |
4825 | ||
3280af22 NIS |
4826 | s = PL_bufptr; |
4827 | PL_oldoldbufptr = PL_oldbufptr; | |
4828 | PL_oldbufptr = s; | |
463ee0b2 LW |
4829 | |
4830 | retry: | |
5db06880 | 4831 | #ifdef PERL_MAD |
cd81e915 NC |
4832 | if (PL_thistoken) { |
4833 | sv_free(PL_thistoken); | |
4834 | PL_thistoken = 0; | |
5db06880 | 4835 | } |
cd81e915 | 4836 | PL_realtokenstart = s - SvPVX(PL_linestr); /* assume but undo on ws */ |
5db06880 | 4837 | #endif |
378cc40b LW |
4838 | switch (*s) { |
4839 | default: | |
7e2040f0 | 4840 | if (isIDFIRST_lazy_if(s,UTF)) |
834a4ddd | 4841 | goto keylookup; |
b1fc3636 | 4842 | { |
e2f06df0 BF |
4843 | SV *dsv = newSVpvs_flags("", SVs_TEMP); |
4844 | const char *c = UTF ? savepv(sv_uni_display(dsv, newSVpvn_flags(s, | |
4845 | UTF8SKIP(s), | |
4846 | SVs_TEMP | SVf_UTF8), | |
4847 | 10, UNI_DISPLAY_ISPRINT)) | |
4848 | : Perl_form(aTHX_ "\\x%02X", (unsigned char)*s); | |
b1fc3636 CJ |
4849 | len = UTF ? Perl_utf8_length(aTHX_ (U8 *) PL_linestart, (U8 *) s) : (STRLEN) (s - PL_linestart); |
4850 | if (len > UNRECOGNIZED_PRECEDE_COUNT) { | |
4851 | d = UTF ? (char *) Perl_utf8_hop(aTHX_ (U8 *) s, -UNRECOGNIZED_PRECEDE_COUNT) : s - UNRECOGNIZED_PRECEDE_COUNT; | |
4852 | } else { | |
4853 | d = PL_linestart; | |
4854 | } | |
4855 | *s = '\0'; | |
e2f06df0 BF |
4856 | sv_setpv(dsv, d); |
4857 | if (UTF) | |
4858 | SvUTF8_on(dsv); | |
4859 | Perl_croak(aTHX_ "Unrecognized character %s; marked by <-- HERE after %"SVf"<-- HERE near column %d", c, SVfARG(dsv), (int) len + 1); | |
b1fc3636 | 4860 | } |
e929a76b LW |
4861 | case 4: |
4862 | case 26: | |
4863 | goto fake_eof; /* emulate EOF on ^D or ^Z */ | |
378cc40b | 4864 | case 0: |
5db06880 NC |
4865 | #ifdef PERL_MAD |
4866 | if (PL_madskills) | |
cd81e915 | 4867 | PL_faketokens = 0; |
5db06880 | 4868 | #endif |
60d63348 | 4869 | if (!PL_rsfp && (!PL_parser->filtered || s+1 < PL_bufend)) { |
3280af22 NIS |
4870 | PL_last_uni = 0; |
4871 | PL_last_lop = 0; | |
a7aaec61 Z |
4872 | if (PL_lex_brackets && |
4873 | PL_lex_brackstack[PL_lex_brackets-1] != XFAKEEOF) { | |
10edeb5d JH |
4874 | yyerror((const char *) |
4875 | (PL_lex_formbrack | |
4876 | ? "Format not terminated" | |
4877 | : "Missing right curly or square bracket")); | |
c5ee2135 | 4878 | } |
4e553d73 | 4879 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
607df283 | 4880 | "### Tokener got EOF\n"); |
5f80b19c | 4881 | } ); |
79072805 | 4882 | TOKEN(0); |
463ee0b2 | 4883 | } |
3280af22 | 4884 | if (s++ < PL_bufend) |
a687059c | 4885 | goto retry; /* ignore stray nulls */ |
3280af22 NIS |
4886 | PL_last_uni = 0; |
4887 | PL_last_lop = 0; | |
4888 | if (!PL_in_eval && !PL_preambled) { | |
4889 | PL_preambled = TRUE; | |
5db06880 NC |
4890 | #ifdef PERL_MAD |
4891 | if (PL_madskills) | |
cd81e915 | 4892 | PL_faketokens = 1; |
5db06880 | 4893 | #endif |
5ab7ff98 NC |
4894 | if (PL_perldb) { |
4895 | /* Generate a string of Perl code to load the debugger. | |
4896 | * If PERL5DB is set, it will return the contents of that, | |
4897 | * otherwise a compile-time require of perl5db.pl. */ | |
4898 | ||
4899 | const char * const pdb = PerlEnv_getenv("PERL5DB"); | |
4900 | ||
4901 | if (pdb) { | |
4902 | sv_setpv(PL_linestr, pdb); | |
4903 | sv_catpvs(PL_linestr,";"); | |
4904 | } else { | |
4905 | SETERRNO(0,SS_NORMAL); | |
4906 | sv_setpvs(PL_linestr, "BEGIN { require 'perl5db.pl' };"); | |
4907 | } | |
4908 | } else | |
4909 | sv_setpvs(PL_linestr,""); | |
c62eb204 NC |
4910 | if (PL_preambleav) { |
4911 | SV **svp = AvARRAY(PL_preambleav); | |
4912 | SV **const end = svp + AvFILLp(PL_preambleav); | |
4913 | while(svp <= end) { | |
4914 | sv_catsv(PL_linestr, *svp); | |
4915 | ++svp; | |
396482e1 | 4916 | sv_catpvs(PL_linestr, ";"); |
91b7def8 | 4917 | } |
daba3364 | 4918 | sv_free(MUTABLE_SV(PL_preambleav)); |
3280af22 | 4919 | PL_preambleav = NULL; |
91b7def8 | 4920 | } |
9f639728 FR |
4921 | if (PL_minus_E) |
4922 | sv_catpvs(PL_linestr, | |
4923 | "use feature ':5." STRINGIFY(PERL_VERSION) "';"); | |
3280af22 | 4924 | if (PL_minus_n || PL_minus_p) { |
f0e67a1d | 4925 | sv_catpvs(PL_linestr, "LINE: while (<>) {"/*}*/); |
3280af22 | 4926 | if (PL_minus_l) |
396482e1 | 4927 | sv_catpvs(PL_linestr,"chomp;"); |
3280af22 | 4928 | if (PL_minus_a) { |
3280af22 | 4929 | if (PL_minus_F) { |
3792a11b NC |
4930 | if ((*PL_splitstr == '/' || *PL_splitstr == '\'' |
4931 | || *PL_splitstr == '"') | |
3280af22 | 4932 | && strchr(PL_splitstr + 1, *PL_splitstr)) |
3db68c4c | 4933 | Perl_sv_catpvf(aTHX_ PL_linestr, "our @F=split(%s);", PL_splitstr); |
54310121 | 4934 | else { |
c8ef6a4b NC |
4935 | /* "q\0${splitstr}\0" is legal perl. Yes, even NUL |
4936 | bytes can be used as quoting characters. :-) */ | |
dd374669 | 4937 | const char *splits = PL_splitstr; |
91d456ae | 4938 | sv_catpvs(PL_linestr, "our @F=split(q\0"); |
48c4c863 NC |
4939 | do { |
4940 | /* Need to \ \s */ | |
dd374669 AL |
4941 | if (*splits == '\\') |
4942 | sv_catpvn(PL_linestr, splits, 1); | |
4943 | sv_catpvn(PL_linestr, splits, 1); | |
4944 | } while (*splits++); | |
48c4c863 NC |
4945 | /* This loop will embed the trailing NUL of |
4946 | PL_linestr as the last thing it does before | |
4947 | terminating. */ | |
396482e1 | 4948 | sv_catpvs(PL_linestr, ");"); |
54310121 | 4949 | } |
2304df62 AD |
4950 | } |
4951 | else | |
396482e1 | 4952 | sv_catpvs(PL_linestr,"our @F=split(' ');"); |
2304df62 | 4953 | } |
79072805 | 4954 | } |
396482e1 | 4955 | sv_catpvs(PL_linestr, "\n"); |
3280af22 NIS |
4956 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
4957 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 4958 | PL_last_lop = PL_last_uni = NULL; |
65269a95 | 4959 | if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash) |
5fa550fb | 4960 | update_debugger_info(PL_linestr, NULL, 0); |
79072805 | 4961 | goto retry; |
a687059c | 4962 | } |
e929a76b | 4963 | do { |
580561a3 Z |
4964 | fake_eof = 0; |
4965 | bof = PL_rsfp ? TRUE : FALSE; | |
f0e67a1d | 4966 | if (0) { |
7e28d3af | 4967 | fake_eof: |
f0e67a1d Z |
4968 | fake_eof = LEX_FAKE_EOF; |
4969 | } | |
4970 | PL_bufptr = PL_bufend; | |
83944c01 | 4971 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d | 4972 | if (!lex_next_chunk(fake_eof)) { |
17cc9359 | 4973 | CopLINE_dec(PL_curcop); |
f0e67a1d Z |
4974 | s = PL_bufptr; |
4975 | TOKEN(';'); /* not infinite loop because rsfp is NULL now */ | |
4976 | } | |
17cc9359 | 4977 | CopLINE_dec(PL_curcop); |
5db06880 | 4978 | #ifdef PERL_MAD |
f0e67a1d | 4979 | if (!PL_rsfp) |
cd81e915 | 4980 | PL_realtokenstart = -1; |
5db06880 | 4981 | #endif |
f0e67a1d | 4982 | s = PL_bufptr; |
7aa207d6 JH |
4983 | /* If it looks like the start of a BOM or raw UTF-16, |
4984 | * check if it in fact is. */ | |
580561a3 | 4985 | if (bof && PL_rsfp && |
7aa207d6 JH |
4986 | (*s == 0 || |
4987 | *(U8*)s == 0xEF || | |
4988 | *(U8*)s >= 0xFE || | |
4989 | s[1] == 0)) { | |
879bc93b DM |
4990 | Off_t offset = (IV)PerlIO_tell(PL_rsfp); |
4991 | bof = (offset == (Off_t)SvCUR(PL_linestr)); | |
6d510155 JD |
4992 | #if defined(PERLIO_USING_CRLF) && defined(PERL_TEXTMODE_SCRIPTS) |
4993 | /* offset may include swallowed CR */ | |
4994 | if (!bof) | |
879bc93b | 4995 | bof = (offset == (Off_t)SvCUR(PL_linestr)+1); |
6d510155 | 4996 | #endif |
7e28d3af | 4997 | if (bof) { |
3280af22 | 4998 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
7e28d3af | 4999 | s = swallow_bom((U8*)s); |
e929a76b | 5000 | } |
378cc40b | 5001 | } |
737c24fc | 5002 | if (PL_parser->in_pod) { |
a0d0e21e | 5003 | /* Incest with pod. */ |
5db06880 NC |
5004 | #ifdef PERL_MAD |
5005 | if (PL_madskills) | |
cd81e915 | 5006 | sv_catsv(PL_thiswhite, PL_linestr); |
5db06880 | 5007 | #endif |
01a57ef7 | 5008 | if (*s == '=' && strnEQ(s, "=cut", 4) && !isALPHA(s[4])) { |
76f68e9b | 5009 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
5010 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5011 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5012 | PL_last_lop = PL_last_uni = NULL; |
737c24fc | 5013 | PL_parser->in_pod = 0; |
a0d0e21e | 5014 | } |
4e553d73 | 5015 | } |
60d63348 | 5016 | if (PL_rsfp || PL_parser->filtered) |
85613cab | 5017 | incline(s); |
737c24fc | 5018 | } while (PL_parser->in_pod); |
3280af22 | 5019 | PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s; |
3280af22 | 5020 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
bd61b366 | 5021 | PL_last_lop = PL_last_uni = NULL; |
57843af0 | 5022 | if (CopLINE(PL_curcop) == 1) { |
3280af22 | 5023 | while (s < PL_bufend && isSPACE(*s)) |
79072805 | 5024 | s++; |
a0d0e21e | 5025 | if (*s == ':' && s[1] != ':') /* for csh execing sh scripts */ |
79072805 | 5026 | s++; |
5db06880 NC |
5027 | #ifdef PERL_MAD |
5028 | if (PL_madskills) | |
cd81e915 | 5029 | PL_thiswhite = newSVpvn(PL_linestart, s - PL_linestart); |
5db06880 | 5030 | #endif |
bd61b366 | 5031 | d = NULL; |
3280af22 | 5032 | if (!PL_in_eval) { |
44a8e56a | 5033 | if (*s == '#' && *(s+1) == '!') |
5034 | d = s + 2; | |
5035 | #ifdef ALTERNATE_SHEBANG | |
5036 | else { | |
bfed75c6 | 5037 | static char const as[] = ALTERNATE_SHEBANG; |
44a8e56a | 5038 | if (*s == as[0] && strnEQ(s, as, sizeof(as) - 1)) |
5039 | d = s + (sizeof(as) - 1); | |
5040 | } | |
5041 | #endif /* ALTERNATE_SHEBANG */ | |
5042 | } | |
5043 | if (d) { | |
b8378b72 | 5044 | char *ipath; |
774d564b | 5045 | char *ipathend; |
b8378b72 | 5046 | |
774d564b | 5047 | while (isSPACE(*d)) |
b8378b72 CS |
5048 | d++; |
5049 | ipath = d; | |
774d564b | 5050 | while (*d && !isSPACE(*d)) |
5051 | d++; | |
5052 | ipathend = d; | |
5053 | ||
5054 | #ifdef ARG_ZERO_IS_SCRIPT | |
5055 | if (ipathend > ipath) { | |
5056 | /* | |
5057 | * HP-UX (at least) sets argv[0] to the script name, | |
5058 | * which makes $^X incorrect. And Digital UNIX and Linux, | |
5059 | * at least, set argv[0] to the basename of the Perl | |
5060 | * interpreter. So, having found "#!", we'll set it right. | |
5061 | */ | |
fafc274c NC |
5062 | SV * const x = GvSV(gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, |
5063 | SVt_PV)); /* $^X */ | |
774d564b | 5064 | assert(SvPOK(x) || SvGMAGICAL(x)); |
cc49e20b | 5065 | if (sv_eq(x, CopFILESV(PL_curcop))) { |
774d564b | 5066 | sv_setpvn(x, ipath, ipathend - ipath); |
9607fc9c | 5067 | SvSETMAGIC(x); |
5068 | } | |
556c1dec JH |
5069 | else { |
5070 | STRLEN blen; | |
5071 | STRLEN llen; | |
cfd0369c | 5072 | const char *bstart = SvPV_const(CopFILESV(PL_curcop),blen); |
9d4ba2ae | 5073 | const char * const lstart = SvPV_const(x,llen); |
556c1dec JH |
5074 | if (llen < blen) { |
5075 | bstart += blen - llen; | |
5076 | if (strnEQ(bstart, lstart, llen) && bstart[-1] == '/') { | |
5077 | sv_setpvn(x, ipath, ipathend - ipath); | |
5078 | SvSETMAGIC(x); | |
5079 | } | |
5080 | } | |
5081 | } | |
774d564b | 5082 | TAINT_NOT; /* $^X is always tainted, but that's OK */ |
8ebc5c01 | 5083 | } |
774d564b | 5084 | #endif /* ARG_ZERO_IS_SCRIPT */ |
b8378b72 CS |
5085 | |
5086 | /* | |
5087 | * Look for options. | |
5088 | */ | |
748a9306 | 5089 | d = instr(s,"perl -"); |
84e30d1a | 5090 | if (!d) { |
748a9306 | 5091 | d = instr(s,"perl"); |
84e30d1a GS |
5092 | #if defined(DOSISH) |
5093 | /* avoid getting into infinite loops when shebang | |
5094 | * line contains "Perl" rather than "perl" */ | |
5095 | if (!d) { | |
5096 | for (d = ipathend-4; d >= ipath; --d) { | |
5097 | if ((*d == 'p' || *d == 'P') | |
5098 | && !ibcmp(d, "perl", 4)) | |
5099 | { | |
5100 | break; | |
5101 | } | |
5102 | } | |
5103 | if (d < ipath) | |
bd61b366 | 5104 | d = NULL; |
84e30d1a GS |
5105 | } |
5106 | #endif | |
5107 | } | |
44a8e56a | 5108 | #ifdef ALTERNATE_SHEBANG |
5109 | /* | |
5110 | * If the ALTERNATE_SHEBANG on this system starts with a | |
5111 | * character that can be part of a Perl expression, then if | |
5112 | * we see it but not "perl", we're probably looking at the | |
5113 | * start of Perl code, not a request to hand off to some | |
5114 | * other interpreter. Similarly, if "perl" is there, but | |
5115 | * not in the first 'word' of the line, we assume the line | |
5116 | * contains the start of the Perl program. | |
44a8e56a | 5117 | */ |
5118 | if (d && *s != '#') { | |
f54cb97a | 5119 | const char *c = ipath; |
44a8e56a | 5120 | while (*c && !strchr("; \t\r\n\f\v#", *c)) |
5121 | c++; | |
5122 | if (c < d) | |
bd61b366 | 5123 | d = NULL; /* "perl" not in first word; ignore */ |
44a8e56a | 5124 | else |
5125 | *s = '#'; /* Don't try to parse shebang line */ | |
5126 | } | |
774d564b | 5127 | #endif /* ALTERNATE_SHEBANG */ |
748a9306 | 5128 | if (!d && |
44a8e56a | 5129 | *s == '#' && |
774d564b | 5130 | ipathend > ipath && |
3280af22 | 5131 | !PL_minus_c && |
748a9306 | 5132 | !instr(s,"indir") && |
3280af22 | 5133 | instr(PL_origargv[0],"perl")) |
748a9306 | 5134 | { |
27da23d5 | 5135 | dVAR; |
9f68db38 | 5136 | char **newargv; |
9f68db38 | 5137 | |
774d564b | 5138 | *ipathend = '\0'; |
5139 | s = ipathend + 1; | |
3280af22 | 5140 | while (s < PL_bufend && isSPACE(*s)) |
9f68db38 | 5141 | s++; |
3280af22 | 5142 | if (s < PL_bufend) { |
d85f917e | 5143 | Newx(newargv,PL_origargc+3,char*); |
9f68db38 | 5144 | newargv[1] = s; |
3280af22 | 5145 | while (s < PL_bufend && !isSPACE(*s)) |
9f68db38 LW |
5146 | s++; |
5147 | *s = '\0'; | |
3280af22 | 5148 | Copy(PL_origargv+1, newargv+2, PL_origargc+1, char*); |
9f68db38 LW |
5149 | } |
5150 | else | |
3280af22 | 5151 | newargv = PL_origargv; |
774d564b | 5152 | newargv[0] = ipath; |
b35112e7 | 5153 | PERL_FPU_PRE_EXEC |
b4748376 | 5154 | PerlProc_execv(ipath, EXEC_ARGV_CAST(newargv)); |
b35112e7 | 5155 | PERL_FPU_POST_EXEC |
cea2e8a9 | 5156 | Perl_croak(aTHX_ "Can't exec %s", ipath); |
9f68db38 | 5157 | } |
748a9306 | 5158 | if (d) { |
c35e046a AL |
5159 | while (*d && !isSPACE(*d)) |
5160 | d++; | |
5161 | while (SPACE_OR_TAB(*d)) | |
5162 | d++; | |
748a9306 LW |
5163 | |
5164 | if (*d++ == '-') { | |
f54cb97a | 5165 | const bool switches_done = PL_doswitches; |
fb993905 GA |
5166 | const U32 oldpdb = PL_perldb; |
5167 | const bool oldn = PL_minus_n; | |
5168 | const bool oldp = PL_minus_p; | |
c7030b81 | 5169 | const char *d1 = d; |
fb993905 | 5170 | |
8cc95fdb | 5171 | do { |
4ba71d51 FC |
5172 | bool baduni = FALSE; |
5173 | if (*d1 == 'C') { | |
bd0ab00d NC |
5174 | const char *d2 = d1 + 1; |
5175 | if (parse_unicode_opts((const char **)&d2) | |
5176 | != PL_unicode) | |
5177 | baduni = TRUE; | |
4ba71d51 FC |
5178 | } |
5179 | if (baduni || *d1 == 'M' || *d1 == 'm') { | |
c7030b81 NC |
5180 | const char * const m = d1; |
5181 | while (*d1 && !isSPACE(*d1)) | |
5182 | d1++; | |
cea2e8a9 | 5183 | Perl_croak(aTHX_ "Too late for \"-%.*s\" option", |
c7030b81 | 5184 | (int)(d1 - m), m); |
8cc95fdb | 5185 | } |
c7030b81 NC |
5186 | d1 = moreswitches(d1); |
5187 | } while (d1); | |
f0b2cf55 YST |
5188 | if (PL_doswitches && !switches_done) { |
5189 | int argc = PL_origargc; | |
5190 | char **argv = PL_origargv; | |
5191 | do { | |
5192 | argc--,argv++; | |
5193 | } while (argc && argv[0][0] == '-' && argv[0][1]); | |
5194 | init_argv_symbols(argc,argv); | |
5195 | } | |
65269a95 | 5196 | if (((PERLDB_LINE || PERLDB_SAVESRC) && !oldpdb) || |
155aba94 | 5197 | ((PL_minus_n || PL_minus_p) && !(oldn || oldp))) |
b084f20b | 5198 | /* if we have already added "LINE: while (<>) {", |
5199 | we must not do it again */ | |
748a9306 | 5200 | { |
76f68e9b | 5201 | sv_setpvs(PL_linestr, ""); |
3280af22 NIS |
5202 | PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr); |
5203 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); | |
bd61b366 | 5204 | PL_last_lop = PL_last_uni = NULL; |
3280af22 | 5205 | PL_preambled = FALSE; |
65269a95 | 5206 | if (PERLDB_LINE || PERLDB_SAVESRC) |
3280af22 | 5207 | (void)gv_fetchfile(PL_origfilename); |
748a9306 LW |
5208 | goto retry; |
5209 | } | |
a0d0e21e | 5210 | } |
79072805 | 5211 | } |
9f68db38 | 5212 | } |
79072805 | 5213 | } |
3280af22 | 5214 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
3280af22 | 5215 | PL_lex_state = LEX_FORMLINE; |
705fe0e5 FC |
5216 | start_force(PL_curforce); |
5217 | NEXTVAL_NEXTTOKE.ival = 0; | |
5218 | force_next(FORMRBRACK); | |
5219 | TOKEN(';'); | |
ae986130 | 5220 | } |
378cc40b | 5221 | goto retry; |
4fdae800 | 5222 | case '\r': |
6a27c188 | 5223 | #ifdef PERL_STRICT_CR |
cea2e8a9 | 5224 | Perl_warn(aTHX_ "Illegal character \\%03o (carriage return)", '\r'); |
4e553d73 | 5225 | Perl_croak(aTHX_ |
cc507455 | 5226 | "\t(Maybe you didn't strip carriage returns after a network transfer?)\n"); |
a868473f | 5227 | #endif |
4fdae800 | 5228 | case ' ': case '\t': case '\f': case 013: |
5db06880 | 5229 | #ifdef PERL_MAD |
cd81e915 | 5230 | PL_realtokenstart = -1; |
ac372eb8 RD |
5231 | if (!PL_thiswhite) |
5232 | PL_thiswhite = newSVpvs(""); | |
5233 | sv_catpvn(PL_thiswhite, s, 1); | |
5db06880 | 5234 | #endif |
ac372eb8 | 5235 | s++; |
378cc40b | 5236 | goto retry; |
378cc40b | 5237 | case '#': |
e929a76b | 5238 | case '\n': |
5db06880 | 5239 | #ifdef PERL_MAD |
cd81e915 | 5240 | PL_realtokenstart = -1; |
5db06880 | 5241 | if (PL_madskills) |
cd81e915 | 5242 | PL_faketokens = 0; |
5db06880 | 5243 | #endif |
60d63348 | 5244 | if (PL_lex_state != LEX_NORMAL || |
62e4c90a FC |
5245 | (PL_in_eval && !PL_rsfp && !PL_parser->filtered)) { |
5246 | if (*s == '#' && s == PL_linestart && PL_in_eval | |
60d63348 | 5247 | && !PL_rsfp && !PL_parser->filtered) { |
df0deb90 GS |
5248 | /* handle eval qq[#line 1 "foo"\n ...] */ |
5249 | CopLINE_dec(PL_curcop); | |
5250 | incline(s); | |
5251 | } | |
5db06880 NC |
5252 | if (PL_madskills && !PL_lex_formbrack && !PL_in_eval) { |
5253 | s = SKIPSPACE0(s); | |
62e4c90a | 5254 | if (!PL_in_eval || PL_rsfp || PL_parser->filtered) |
5db06880 NC |
5255 | incline(s); |
5256 | } | |
5257 | else { | |
9c74ccc9 | 5258 | const bool in_comment = *s == '#'; |
5db06880 NC |
5259 | d = s; |
5260 | while (d < PL_bufend && *d != '\n') | |
5261 | d++; | |
5262 | if (d < PL_bufend) | |
5263 | d++; | |
5264 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5637ef5b NC |
5265 | Perl_croak(aTHX_ "panic: input overflow, %p > %p", |
5266 | d, PL_bufend); | |
5db06880 NC |
5267 | #ifdef PERL_MAD |
5268 | if (PL_madskills) | |
cd81e915 | 5269 | PL_thiswhite = newSVpvn(s, d - s); |
5db06880 NC |
5270 | #endif |
5271 | s = d; | |
9c74ccc9 FC |
5272 | if (in_comment && d == PL_bufend |
5273 | && PL_lex_state == LEX_INTERPNORMAL | |
90a536e1 | 5274 | && PL_lex_inwhat == OP_SUBST && PL_lex_repl == PL_linestr |
9c74ccc9 FC |
5275 | && SvEVALED(PL_lex_repl) && d[-1] == '}') s--; |
5276 | else incline(s); | |
5db06880 | 5277 | } |
3280af22 | 5278 | if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) { |
3280af22 | 5279 | PL_lex_state = LEX_FORMLINE; |
705fe0e5 FC |
5280 | start_force(PL_curforce); |
5281 | NEXTVAL_NEXTTOKE.ival = 0; | |
5282 | force_next(FORMRBRACK); | |
5283 | TOKEN(';'); | |
a687059c | 5284 | } |
378cc40b | 5285 | } |
a687059c | 5286 | else { |
5db06880 NC |
5287 | #ifdef PERL_MAD |
5288 | if (PL_madskills && CopLINE(PL_curcop) >= 1 && !PL_lex_formbrack) { | |
5289 | if (CopLINE(PL_curcop) == 1 && s[0] == '#' && s[1] == '!') { | |
cd81e915 | 5290 | PL_faketokens = 0; |
5db06880 NC |
5291 | s = SKIPSPACE0(s); |
5292 | TOKEN(PEG); /* make sure any #! line is accessible */ | |
5293 | } | |
5294 | s = SKIPSPACE0(s); | |
5295 | } | |
5296 | else { | |
5297 | /* if (PL_madskills && PL_lex_formbrack) { */ | |
5298 | d = s; | |
5299 | while (d < PL_bufend && *d != '\n') | |
5300 | d++; | |
5301 | if (d < PL_bufend) | |
5302 | d++; | |
5303 | else if (d > PL_bufend) /* Found by Ilya: feed random input to Perl. */ | |
5304 | Perl_croak(aTHX_ "panic: input overflow"); | |
5305 | if (PL_madskills && CopLINE(PL_curcop) >= 1) { | |
cd81e915 | 5306 | if (!PL_thiswhite) |
6b29d1f5 | 5307 | PL_thiswhite = newSVpvs(""); |
5db06880 | 5308 | if (CopLINE(PL_curcop) == 1) { |
76f68e9b | 5309 | sv_setpvs(PL_thiswhite, ""); |
cd81e915 | 5310 | PL_faketokens = 0; |
5db06880 | 5311 | } |
cd81e915 | 5312 | sv_catpvn(PL_thiswhite, s, d - s); |
5db06880 NC |
5313 | } |
5314 | s = d; | |
5315 | /* } | |
5316 | *s = '\0'; | |
5317 | PL_bufend = s; */ | |
5318 | } | |
5319 | #else | |
378cc40b | 5320 | *s = '\0'; |
3280af22 | 5321 | PL_bufend = s; |
5db06880 | 5322 | #endif |
a687059c | 5323 | } |
378cc40b LW |
5324 | goto retry; |
5325 | case '-': | |
79072805 | 5326 | if (s[1] && isALPHA(s[1]) && !isALNUM(s[2])) { |
e5edeb50 | 5327 | I32 ftst = 0; |
90771dc0 | 5328 | char tmp; |
e5edeb50 | 5329 | |
378cc40b | 5330 | s++; |
3280af22 | 5331 | PL_bufptr = s; |
748a9306 LW |
5332 | tmp = *s++; |
5333 | ||
bf4acbe4 | 5334 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 LW |
5335 | s++; |
5336 | ||
5337 | if (strnEQ(s,"=>",2)) { | |
3280af22 | 5338 | s = force_word(PL_bufptr,WORD,FALSE,FALSE,FALSE); |
931e0695 | 5339 | DEBUG_T( { printbuf("### Saw unary minus before =>, forcing word %s\n", s); } ); |
748a9306 LW |
5340 | OPERATOR('-'); /* unary minus */ |
5341 | } | |
3280af22 | 5342 | PL_last_uni = PL_oldbufptr; |
748a9306 | 5343 | switch (tmp) { |
e5edeb50 JH |
5344 | case 'r': ftst = OP_FTEREAD; break; |
5345 | case 'w': ftst = OP_FTEWRITE; break; | |
5346 | case 'x': ftst = OP_FTEEXEC; break; | |
5347 | case 'o': ftst = OP_FTEOWNED; break; | |
5348 | case 'R': ftst = OP_FTRREAD; break; | |
5349 | case 'W': ftst = OP_FTRWRITE; break; | |
5350 | case 'X': ftst = OP_FTREXEC; break; | |
5351 | case 'O': ftst = OP_FTROWNED; break; | |
5352 | case 'e': ftst = OP_FTIS; break; | |
5353 | case 'z': ftst = OP_FTZERO; break; | |
5354 | case 's': ftst = OP_FTSIZE; break; | |
5355 | case 'f': ftst = OP_FTFILE; break; | |
5356 | case 'd': ftst = OP_FTDIR; break; | |
5357 | case 'l': ftst = OP_FTLINK; break; | |
5358 | case 'p': ftst = OP_FTPIPE; break; | |
5359 | case 'S': ftst = OP_FTSOCK; break; | |
5360 | case 'u': ftst = OP_FTSUID; break; | |
5361 | case 'g': ftst = OP_FTSGID; break; | |
5362 | case 'k': ftst = OP_FTSVTX; break; | |
5363 | case 'b': ftst = OP_FTBLK; break; | |
5364 | case 'c': ftst = OP_FTCHR; break; | |
5365 | case 't': ftst = OP_FTTTY; break; | |
5366 | case 'T': ftst = OP_FTTEXT; break; | |
5367 | case 'B': ftst = OP_FTBINARY; break; | |
5368 | case 'M': case 'A': case 'C': | |
fafc274c | 5369 | gv_fetchpvs("\024", GV_ADD|GV_NOTQUAL, SVt_PV); |
e5edeb50 JH |
5370 | switch (tmp) { |
5371 | case 'M': ftst = OP_FTMTIME; break; | |
5372 | case 'A': ftst = OP_FTATIME; break; | |
5373 | case 'C': ftst = OP_FTCTIME; break; | |
5374 | default: break; | |
5375 | } | |
5376 | break; | |
378cc40b | 5377 | default: |
378cc40b LW |
5378 | break; |
5379 | } | |
e5edeb50 | 5380 | if (ftst) { |
eb160463 | 5381 | PL_last_lop_op = (OPCODE)ftst; |
4e553d73 | 5382 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
a18d764d | 5383 | "### Saw file test %c\n", (int)tmp); |
5f80b19c | 5384 | } ); |
e5edeb50 JH |
5385 | FTST(ftst); |
5386 | } | |
5387 | else { | |
5388 | /* Assume it was a minus followed by a one-letter named | |
5389 | * subroutine call (or a -bareword), then. */ | |
95c31fe3 | 5390 | DEBUG_T( { PerlIO_printf(Perl_debug_log, |
17ad61e0 | 5391 | "### '-%c' looked like a file test but was not\n", |
4fccd7c6 | 5392 | (int) tmp); |
5f80b19c | 5393 | } ); |
3cf7b4c4 | 5394 | s = --PL_bufptr; |
e5edeb50 | 5395 | } |
378cc40b | 5396 | } |
90771dc0 NC |
5397 | { |
5398 | const char tmp = *s++; | |
5399 | if (*s == tmp) { | |
5400 | s++; | |
5401 | if (PL_expect == XOPERATOR) | |
5402 | TERM(POSTDEC); | |
5403 | else | |
5404 | OPERATOR(PREDEC); | |
5405 | } | |
5406 | else if (*s == '>') { | |
5407 | s++; | |
29595ff2 | 5408 | s = SKIPSPACE1(s); |
90771dc0 NC |
5409 | if (isIDFIRST_lazy_if(s,UTF)) { |
5410 | s = force_word(s,METHOD,FALSE,TRUE,FALSE); | |
5411 | TOKEN(ARROW); | |
5412 | } | |
5413 | else if (*s == '$') | |
5414 | OPERATOR(ARROW); | |
5415 | else | |
5416 | TERM(ARROW); | |
5417 | } | |
78cdf107 Z |
5418 | if (PL_expect == XOPERATOR) { |
5419 | if (*s == '=' && !PL_lex_allbrackets && | |
5420 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5421 | s--; | |
5422 | TOKEN(0); | |
5423 | } | |
90771dc0 | 5424 | Aop(OP_SUBTRACT); |
78cdf107 | 5425 | } |
90771dc0 NC |
5426 | else { |
5427 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5428 | check_uni(); | |
5429 | OPERATOR('-'); /* unary minus */ | |
79072805 | 5430 | } |
2f3197b3 | 5431 | } |
79072805 | 5432 | |
378cc40b | 5433 | case '+': |
90771dc0 NC |
5434 | { |
5435 | const char tmp = *s++; | |
5436 | if (*s == tmp) { | |
5437 | s++; | |
5438 | if (PL_expect == XOPERATOR) | |
5439 | TERM(POSTINC); | |
5440 | else | |
5441 | OPERATOR(PREINC); | |
5442 | } | |
78cdf107 Z |
5443 | if (PL_expect == XOPERATOR) { |
5444 | if (*s == '=' && !PL_lex_allbrackets && | |
5445 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5446 | s--; | |
5447 | TOKEN(0); | |
5448 | } | |
90771dc0 | 5449 | Aop(OP_ADD); |
78cdf107 | 5450 | } |
90771dc0 NC |
5451 | else { |
5452 | if (isSPACE(*s) || !isSPACE(*PL_bufptr)) | |
5453 | check_uni(); | |
5454 | OPERATOR('+'); | |
5455 | } | |
2f3197b3 | 5456 | } |
a687059c | 5457 | |
378cc40b | 5458 | case '*': |
3280af22 NIS |
5459 | if (PL_expect != XOPERATOR) { |
5460 | s = scan_ident(s, PL_bufend, PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
5461 | PL_expect = XOPERATOR; | |
5462 | force_ident(PL_tokenbuf, '*'); | |
5463 | if (!*PL_tokenbuf) | |
a0d0e21e | 5464 | PREREF('*'); |
79072805 | 5465 | TERM('*'); |
a687059c | 5466 | } |
79072805 LW |
5467 | s++; |
5468 | if (*s == '*') { | |
a687059c | 5469 | s++; |
78cdf107 Z |
5470 | if (*s == '=' && !PL_lex_allbrackets && |
5471 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5472 | s -= 2; | |
5473 | TOKEN(0); | |
5474 | } | |
79072805 | 5475 | PWop(OP_POW); |
a687059c | 5476 | } |
78cdf107 Z |
5477 | if (*s == '=' && !PL_lex_allbrackets && |
5478 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
5479 | s--; | |
5480 | TOKEN(0); | |
5481 | } | |
79072805 LW |
5482 | Mop(OP_MULTIPLY); |
5483 | ||
378cc40b | 5484 | case '%': |
3280af22 | 5485 | if (PL_expect == XOPERATOR) { |
78cdf107 Z |
5486 | if (s[1] == '=' && !PL_lex_allbrackets && |
5487 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
5488 | TOKEN(0); | |
bbce6d69 | 5489 | ++s; |
5490 | Mop(OP_MODULO); | |
a687059c | 5491 | } |
3280af22 | 5492 | PL_tokenbuf[0] = '%'; |
e8ae98db RGS |
5493 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
5494 | sizeof PL_tokenbuf - 1, FALSE); | |
3280af22 | 5495 | if (!PL_tokenbuf[1]) { |
bbce6d69 | 5496 | PREREF('%'); |
a687059c | 5497 | } |
60ac52eb FC |
5498 | PL_expect = XOPERATOR; |
5499 | force_ident_maybe_lex('%'); | |
bbce6d69 | 5500 | TERM('%'); |
a687059c | 5501 | |
378cc40b | 5502 | case '^': |
78cdf107 Z |
5503 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5504 | (s[1] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) | |
5505 | TOKEN(0); | |
79072805 | 5506 | s++; |
a0d0e21e | 5507 | BOop(OP_BIT_XOR); |
79072805 | 5508 | case '[': |
a7aaec61 Z |
5509 | if (PL_lex_brackets > 100) |
5510 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
5511 | PL_lex_brackstack[PL_lex_brackets++] = 0; | |
78cdf107 | 5512 | PL_lex_allbrackets++; |
df3467db IG |
5513 | { |
5514 | const char tmp = *s++; | |
5515 | OPERATOR(tmp); | |
5516 | } | |
378cc40b | 5517 | case '~': |
0d863452 | 5518 | if (s[1] == '~' |
3e7dd34d | 5519 | && (PL_expect == XOPERATOR || PL_expect == XTERMORDORDOR)) |
0d863452 | 5520 | { |
78cdf107 Z |
5521 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
5522 | TOKEN(0); | |
0d863452 RH |
5523 | s += 2; |
5524 | Eop(OP_SMARTMATCH); | |
5525 | } | |
78cdf107 Z |
5526 | s++; |
5527 | OPERATOR('~'); | |
378cc40b | 5528 | case ',': |
78cdf107 Z |
5529 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) |
5530 | TOKEN(0); | |
5531 | s++; | |
5532 | OPERATOR(','); | |
a0d0e21e LW |
5533 | case ':': |
5534 | if (s[1] == ':') { | |
5535 | len = 0; | |
0bfa2a8a | 5536 | goto just_a_word_zero_gv; |
a0d0e21e LW |
5537 | } |
5538 | s++; | |
09bef843 SB |
5539 | switch (PL_expect) { |
5540 | OP *attrs; | |
5db06880 NC |
5541 | #ifdef PERL_MAD |
5542 | I32 stuffstart; | |
5543 | #endif | |
09bef843 SB |
5544 | case XOPERATOR: |
5545 | if (!PL_in_my || PL_lex_state != LEX_NORMAL) | |
5546 | break; | |
5547 | PL_bufptr = s; /* update in case we back off */ | |
d83f38d8 | 5548 | if (*s == '=') { |
2dc78664 NC |
5549 | Perl_croak(aTHX_ |
5550 | "Use of := for an empty attribute list is not allowed"); | |
d83f38d8 | 5551 | } |
09bef843 SB |
5552 | goto grabattrs; |
5553 | case XATTRBLOCK: | |
5554 | PL_expect = XBLOCK; | |
5555 | goto grabattrs; | |
5556 | case XATTRTERM: | |
5557 | PL_expect = XTERMBLOCK; | |
5558 | grabattrs: | |
5db06880 NC |
5559 | #ifdef PERL_MAD |
5560 | stuffstart = s - SvPVX(PL_linestr) - 1; | |
5561 | #endif | |
29595ff2 | 5562 | s = PEEKSPACE(s); |
5f66b61c | 5563 | attrs = NULL; |
7e2040f0 | 5564 | while (isIDFIRST_lazy_if(s,UTF)) { |
90771dc0 | 5565 | I32 tmp; |
5cc237b8 | 5566 | SV *sv; |
09bef843 | 5567 | d = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
5458a98a | 5568 | if (isLOWER(*s) && (tmp = keyword(PL_tokenbuf, len, 0))) { |
f9829d6b GS |
5569 | if (tmp < 0) tmp = -tmp; |
5570 | switch (tmp) { | |
5571 | case KEY_or: | |
5572 | case KEY_and: | |
5573 | case KEY_for: | |
11baf631 | 5574 | case KEY_foreach: |
f9829d6b GS |
5575 | case KEY_unless: |
5576 | case KEY_if: | |
5577 | case KEY_while: | |
5578 | case KEY_until: | |
5579 | goto got_attrs; | |
5580 | default: | |
5581 | break; | |
5582 | } | |
5583 | } | |
89a5757c | 5584 | sv = newSVpvn_flags(s, len, UTF ? SVf_UTF8 : 0); |
09bef843 | 5585 | if (*d == '(') { |
d24ca0c5 | 5586 | d = scan_str(d,TRUE,TRUE,FALSE); |
09bef843 | 5587 | if (!d) { |
09bef843 SB |
5588 | /* MUST advance bufptr here to avoid bogus |
5589 | "at end of line" context messages from yyerror(). | |
5590 | */ | |
5591 | PL_bufptr = s + len; | |
5592 | yyerror("Unterminated attribute parameter in attribute list"); | |
5593 | if (attrs) | |
5594 | op_free(attrs); | |
5cc237b8 | 5595 | sv_free(sv); |
bbf60fe6 | 5596 | return REPORT(0); /* EOF indicator */ |
09bef843 SB |
5597 | } |
5598 | } | |
5599 | if (PL_lex_stuff) { | |
09bef843 | 5600 | sv_catsv(sv, PL_lex_stuff); |
2fcb4757 | 5601 | attrs = op_append_elem(OP_LIST, attrs, |
09bef843 SB |
5602 | newSVOP(OP_CONST, 0, sv)); |
5603 | SvREFCNT_dec(PL_lex_stuff); | |
a0714e2c | 5604 | PL_lex_stuff = NULL; |
09bef843 SB |
5605 | } |
5606 | else { | |
5cc237b8 BS |
5607 | if (len == 6 && strnEQ(SvPVX(sv), "unique", len)) { |
5608 | sv_free(sv); | |
1108974d | 5609 | if (PL_in_my == KEY_our) { |
df9a6019 | 5610 | deprecate(":unique"); |
1108974d | 5611 | } |
bfed75c6 | 5612 | else |
371fce9b DM |
5613 | Perl_croak(aTHX_ "The 'unique' attribute may only be applied to 'our' variables"); |
5614 | } | |
5615 | ||
d3cea301 SB |
5616 | /* NOTE: any CV attrs applied here need to be part of |
5617 | the CVf_BUILTIN_ATTRS define in cv.h! */ | |
5cc237b8 BS |
5618 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "lvalue", len)) { |
5619 | sv_free(sv); | |
78f9721b | 5620 | CvLVALUE_on(PL_compcv); |
5cc237b8 BS |
5621 | } |
5622 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "locked", len)) { | |
5623 | sv_free(sv); | |
8e5dadda | 5624 | deprecate(":locked"); |
5cc237b8 BS |
5625 | } |
5626 | else if (!PL_in_my && len == 6 && strnEQ(SvPVX(sv), "method", len)) { | |
5627 | sv_free(sv); | |
78f9721b | 5628 | CvMETHOD_on(PL_compcv); |
5cc237b8 | 5629 | } |
78f9721b SM |
5630 | /* After we've set the flags, it could be argued that |
5631 | we don't need to do the attributes.pm-based setting | |
5632 | process, and shouldn't bother appending recognized | |
d3cea301 SB |
5633 | flags. To experiment with that, uncomment the |
5634 | following "else". (Note that's already been | |
5635 | uncommented. That keeps the above-applied built-in | |
5636 | attributes from being intercepted (and possibly | |
5637 | rejected) by a package's attribute routines, but is | |
5638 | justified by the performance win for the common case | |
5639 | of applying only built-in attributes.) */ | |
0256094b | 5640 | else |
2fcb4757 | 5641 | attrs = op_append_elem(OP_LIST, attrs, |
78f9721b | 5642 | newSVOP(OP_CONST, 0, |
5cc237b8 | 5643 | sv)); |
09bef843 | 5644 | } |
29595ff2 | 5645 | s = PEEKSPACE(d); |
0120eecf | 5646 | if (*s == ':' && s[1] != ':') |
29595ff2 | 5647 | s = PEEKSPACE(s+1); |
0120eecf GS |
5648 | else if (s == d) |
5649 | break; /* require real whitespace or :'s */ | |
29595ff2 | 5650 | /* XXX losing whitespace on sequential attributes here */ |
09bef843 | 5651 | } |
90771dc0 NC |
5652 | { |
5653 | const char tmp | |
5654 | = (PL_expect == XOPERATOR ? '=' : '{'); /*'}(' for vi */ | |
5655 | if (*s != ';' && *s != '}' && *s != tmp | |
5656 | && (tmp != '=' || *s != ')')) { | |
5657 | const char q = ((*s == '\'') ? '"' : '\''); | |
5658 | /* If here for an expression, and parsed no attrs, back | |
5659 | off. */ | |
5660 | if (tmp == '=' && !attrs) { | |
5661 | s = PL_bufptr; | |
5662 | break; | |
5663 | } | |
5664 | /* MUST advance bufptr here to avoid bogus "at end of line" | |
5665 | context messages from yyerror(). | |
5666 | */ | |
5667 | PL_bufptr = s; | |
10edeb5d JH |
5668 | yyerror( (const char *) |
5669 | (*s | |
5670 | ? Perl_form(aTHX_ "Invalid separator character " | |
5671 | "%c%c%c in attribute list", q, *s, q) | |
5672 | : "Unterminated attribute list" ) ); | |
90771dc0 NC |
5673 | if (attrs) |
5674 | op_free(attrs); | |
5675 | OPERATOR(':'); | |
09bef843 | 5676 | } |
09bef843 | 5677 | } |
f9829d6b | 5678 | got_attrs: |
09bef843 | 5679 | if (attrs) { |
cd81e915 | 5680 | start_force(PL_curforce); |
9ded7720 | 5681 | NEXTVAL_NEXTTOKE.opval = attrs; |
cd81e915 | 5682 | CURMAD('_', PL_nextwhite); |
89122651 | 5683 | force_next(THING); |
5db06880 NC |
5684 | } |
5685 | #ifdef PERL_MAD | |
5686 | if (PL_madskills) { | |
cd81e915 | 5687 | PL_thistoken = newSVpvn(SvPVX(PL_linestr) + stuffstart, |
5db06880 | 5688 | (s - SvPVX(PL_linestr)) - stuffstart); |
09bef843 | 5689 | } |
5db06880 | 5690 | #endif |
09bef843 SB |
5691 | TOKEN(COLONATTR); |
5692 | } | |
78cdf107 Z |
5693 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) { |
5694 | s--; | |
5695 | TOKEN(0); | |
5696 | } | |
5697 | PL_lex_allbrackets--; | |
a0d0e21e | 5698 | OPERATOR(':'); |
8990e307 LW |
5699 | case '(': |
5700 | s++; | |
3280af22 NIS |
5701 | if (PL_last_lop == PL_oldoldbufptr || PL_last_uni == PL_oldoldbufptr) |
5702 | PL_oldbufptr = PL_oldoldbufptr; /* allow print(STDOUT 123) */ | |
a0d0e21e | 5703 | else |
3280af22 | 5704 | PL_expect = XTERM; |
29595ff2 | 5705 | s = SKIPSPACE1(s); |
78cdf107 | 5706 | PL_lex_allbrackets++; |
a0d0e21e | 5707 | TOKEN('('); |
378cc40b | 5708 | case ';': |
78cdf107 Z |
5709 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
5710 | TOKEN(0); | |
f4dd75d9 | 5711 | CLINE; |
78cdf107 Z |
5712 | s++; |
5713 | OPERATOR(';'); | |
378cc40b | 5714 | case ')': |
78cdf107 Z |
5715 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_CLOSING) |
5716 | TOKEN(0); | |
5717 | s++; | |
5718 | PL_lex_allbrackets--; | |
5719 | s = SKIPSPACE1(s); | |
5720 | if (*s == '{') | |
5721 | PREBLOCK(')'); | |
5722 | TERM(')'); | |
79072805 | 5723 | case ']': |
a7aaec61 Z |
5724 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
5725 | TOKEN(0); | |
79072805 | 5726 | s++; |
3280af22 | 5727 | if (PL_lex_brackets <= 0) |
d98d5fff | 5728 | yyerror("Unmatched right square bracket"); |
463ee0b2 | 5729 | else |
3280af22 | 5730 | --PL_lex_brackets; |
78cdf107 | 5731 | PL_lex_allbrackets--; |
3280af22 NIS |
5732 | if (PL_lex_state == LEX_INTERPNORMAL) { |
5733 | if (PL_lex_brackets == 0) { | |
02255c60 FC |
5734 | if (*s == '-' && s[1] == '>') |
5735 | PL_lex_state = LEX_INTERPENDMAYBE; | |
5736 | else if (*s != '[' && *s != '{') | |
3280af22 | 5737 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
5738 | } |
5739 | } | |
4633a7c4 | 5740 | TERM(']'); |
79072805 | 5741 | case '{': |
79072805 | 5742 | s++; |
eaf6a13d | 5743 | leftbracket: |
3280af22 | 5744 | if (PL_lex_brackets > 100) { |
8edd5f42 | 5745 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); |
8990e307 | 5746 | } |
3280af22 | 5747 | switch (PL_expect) { |
a0d0e21e | 5748 | case XTERM: |
819b004e | 5749 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5750 | PL_lex_allbrackets++; |
79072805 | 5751 | OPERATOR(HASHBRACK); |
a0d0e21e | 5752 | case XOPERATOR: |
bf4acbe4 | 5753 | while (s < PL_bufend && SPACE_OR_TAB(*s)) |
748a9306 | 5754 | s++; |
44a8e56a | 5755 | d = s; |
3280af22 NIS |
5756 | PL_tokenbuf[0] = '\0'; |
5757 | if (d < PL_bufend && *d == '-') { | |
5758 | PL_tokenbuf[0] = '-'; | |
44a8e56a | 5759 | d++; |
bf4acbe4 | 5760 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
44a8e56a | 5761 | d++; |
5762 | } | |
7e2040f0 | 5763 | if (d < PL_bufend && isIDFIRST_lazy_if(d,UTF)) { |
3280af22 | 5764 | d = scan_word(d, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, |
8903cb82 | 5765 | FALSE, &len); |
bf4acbe4 | 5766 | while (d < PL_bufend && SPACE_OR_TAB(*d)) |
748a9306 LW |
5767 | d++; |
5768 | if (*d == '}') { | |
f54cb97a | 5769 | const char minus = (PL_tokenbuf[0] == '-'); |
44a8e56a | 5770 | s = force_word(s + minus, WORD, FALSE, TRUE, FALSE); |
5771 | if (minus) | |
5772 | force_next('-'); | |
748a9306 LW |
5773 | } |
5774 | } | |
5775 | /* FALL THROUGH */ | |
09bef843 | 5776 | case XATTRBLOCK: |
748a9306 | 5777 | case XBLOCK: |
3280af22 | 5778 | PL_lex_brackstack[PL_lex_brackets++] = XSTATE; |
78cdf107 | 5779 | PL_lex_allbrackets++; |
3280af22 | 5780 | PL_expect = XSTATE; |
a0d0e21e | 5781 | break; |
09bef843 | 5782 | case XATTRTERM: |
a0d0e21e | 5783 | case XTERMBLOCK: |
3280af22 | 5784 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5785 | PL_lex_allbrackets++; |
3280af22 | 5786 | PL_expect = XSTATE; |
a0d0e21e LW |
5787 | break; |
5788 | default: { | |
f54cb97a | 5789 | const char *t; |
3280af22 NIS |
5790 | if (PL_oldoldbufptr == PL_last_lop) |
5791 | PL_lex_brackstack[PL_lex_brackets++] = XTERM; | |
a0d0e21e | 5792 | else |
3280af22 | 5793 | PL_lex_brackstack[PL_lex_brackets++] = XOPERATOR; |
78cdf107 | 5794 | PL_lex_allbrackets++; |
29595ff2 | 5795 | s = SKIPSPACE1(s); |
8452ff4b SB |
5796 | if (*s == '}') { |
5797 | if (PL_expect == XREF && PL_lex_state == LEX_INTERPNORMAL) { | |
5798 | PL_expect = XTERM; | |
5799 | /* This hack is to get the ${} in the message. */ | |
5800 | PL_bufptr = s+1; | |
5801 | yyerror("syntax error"); | |
5802 | break; | |
5803 | } | |
a0d0e21e | 5804 | OPERATOR(HASHBRACK); |
8452ff4b | 5805 | } |
b8a4b1be GS |
5806 | /* This hack serves to disambiguate a pair of curlies |
5807 | * as being a block or an anon hash. Normally, expectation | |
5808 | * determines that, but in cases where we're not in a | |
5809 | * position to expect anything in particular (like inside | |
5810 | * eval"") we have to resolve the ambiguity. This code | |
5811 | * covers the case where the first term in the curlies is a | |
5812 | * quoted string. Most other cases need to be explicitly | |
a0288114 | 5813 | * disambiguated by prepending a "+" before the opening |
b8a4b1be GS |
5814 | * curly in order to force resolution as an anon hash. |
5815 | * | |
5816 | * XXX should probably propagate the outer expectation | |
5817 | * into eval"" to rely less on this hack, but that could | |
5818 | * potentially break current behavior of eval"". | |
5819 | * GSAR 97-07-21 | |
5820 | */ | |
5821 | t = s; | |
5822 | if (*s == '\'' || *s == '"' || *s == '`') { | |
5823 | /* common case: get past first string, handling escapes */ | |
3280af22 | 5824 | for (t++; t < PL_bufend && *t != *s;) |
b8a4b1be GS |
5825 | if (*t++ == '\\' && (*t == '\\' || *t == *s)) |
5826 | t++; | |
5827 | t++; | |
a0d0e21e | 5828 | } |
b8a4b1be | 5829 | else if (*s == 'q') { |
3280af22 | 5830 | if (++t < PL_bufend |
b8a4b1be | 5831 | && (!isALNUM(*t) |
3280af22 | 5832 | || ((*t == 'q' || *t == 'x') && ++t < PL_bufend |
0505442f GS |
5833 | && !isALNUM(*t)))) |
5834 | { | |
abc667d1 | 5835 | /* skip q//-like construct */ |
f54cb97a | 5836 | const char *tmps; |
b8a4b1be GS |
5837 | char open, close, term; |
5838 | I32 brackets = 1; | |
5839 | ||
3280af22 | 5840 | while (t < PL_bufend && isSPACE(*t)) |
b8a4b1be | 5841 | t++; |
abc667d1 DM |
5842 | /* check for q => */ |
5843 | if (t+1 < PL_bufend && t[0] == '=' && t[1] == '>') { | |
5844 | OPERATOR(HASHBRACK); | |
5845 | } | |
b8a4b1be GS |
5846 | term = *t; |
5847 | open = term; | |
5848 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) | |
5849 | term = tmps[5]; | |
5850 | close = term; | |
5851 | if (open == close) | |
3280af22 NIS |
5852 | for (t++; t < PL_bufend; t++) { |
5853 | if (*t == '\\' && t+1 < PL_bufend && open != '\\') | |
b8a4b1be | 5854 | t++; |
6d07e5e9 | 5855 | else if (*t == open) |
b8a4b1be GS |
5856 | break; |
5857 | } | |
abc667d1 | 5858 | else { |
3280af22 NIS |
5859 | for (t++; t < PL_bufend; t++) { |
5860 | if (*t == '\\' && t+1 < PL_bufend) | |
b8a4b1be | 5861 | t++; |
6d07e5e9 | 5862 | else if (*t == close && --brackets <= 0) |
b8a4b1be GS |
5863 | break; |
5864 | else if (*t == open) | |
5865 | brackets++; | |
5866 | } | |
abc667d1 DM |
5867 | } |
5868 | t++; | |
b8a4b1be | 5869 | } |
abc667d1 DM |
5870 | else |
5871 | /* skip plain q word */ | |
5872 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) | |
5873 | t += UTF8SKIP(t); | |
a0d0e21e | 5874 | } |
7e2040f0 | 5875 | else if (isALNUM_lazy_if(t,UTF)) { |
0505442f | 5876 | t += UTF8SKIP(t); |
7e2040f0 | 5877 | while (t < PL_bufend && isALNUM_lazy_if(t,UTF)) |
0505442f | 5878 | t += UTF8SKIP(t); |
a0d0e21e | 5879 | } |
3280af22 | 5880 | while (t < PL_bufend && isSPACE(*t)) |
a0d0e21e | 5881 | t++; |
b8a4b1be GS |
5882 | /* if comma follows first term, call it an anon hash */ |
5883 | /* XXX it could be a comma expression with loop modifiers */ | |
3280af22 | 5884 | if (t < PL_bufend && ((*t == ',' && (*s == 'q' || !isLOWER(*s))) |
b8a4b1be | 5885 | || (*t == '=' && t[1] == '>'))) |
a0d0e21e | 5886 | OPERATOR(HASHBRACK); |
3280af22 | 5887 | if (PL_expect == XREF) |
4e4e412b | 5888 | PL_expect = XTERM; |
a0d0e21e | 5889 | else { |
3280af22 NIS |
5890 | PL_lex_brackstack[PL_lex_brackets-1] = XSTATE; |
5891 | PL_expect = XSTATE; | |
a0d0e21e | 5892 | } |
8990e307 | 5893 | } |
a0d0e21e | 5894 | break; |
463ee0b2 | 5895 | } |
6154021b | 5896 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 | 5897 | if (isSPACE(*s) || *s == '#') |
3280af22 | 5898 | PL_copline = NOLINE; /* invalidate current command line number */ |
7c70caa5 | 5899 | TOKEN(formbrack ? '=' : '{'); |
378cc40b | 5900 | case '}': |
a7aaec61 Z |
5901 | if (PL_lex_brackets && PL_lex_brackstack[PL_lex_brackets-1] == XFAKEEOF) |
5902 | TOKEN(0); | |
79072805 LW |
5903 | rightbracket: |
5904 | s++; | |
3280af22 | 5905 | if (PL_lex_brackets <= 0) |
d98d5fff | 5906 | yyerror("Unmatched right curly bracket"); |
463ee0b2 | 5907 | else |
3280af22 | 5908 | PL_expect = (expectation)PL_lex_brackstack[--PL_lex_brackets]; |
78cdf107 | 5909 | PL_lex_allbrackets--; |
3280af22 NIS |
5910 | if (PL_lex_state == LEX_INTERPNORMAL) { |
5911 | if (PL_lex_brackets == 0) { | |
9059aa12 LW |
5912 | if (PL_expect & XFAKEBRACK) { |
5913 | PL_expect &= XENUMMASK; | |
3280af22 NIS |
5914 | PL_lex_state = LEX_INTERPEND; |
5915 | PL_bufptr = s; | |
5db06880 NC |
5916 | #if 0 |
5917 | if (PL_madskills) { | |
cd81e915 | 5918 | if (!PL_thiswhite) |
6b29d1f5 | 5919 | PL_thiswhite = newSVpvs(""); |
76f68e9b | 5920 | sv_catpvs(PL_thiswhite,"}"); |
5db06880 NC |
5921 | } |
5922 | #endif | |
cea2e8a9 | 5923 | return yylex(); /* ignore fake brackets */ |
79072805 | 5924 | } |
f777953f | 5925 | if (PL_lex_inwhat == OP_SUBST && PL_lex_repl == PL_linestr |
6b00f562 FC |
5926 | && SvEVALED(PL_lex_repl)) |
5927 | PL_lex_state = LEX_INTERPEND; | |
5928 | else if (*s == '-' && s[1] == '>') | |
3280af22 | 5929 | PL_lex_state = LEX_INTERPENDMAYBE; |
fa83b5b6 | 5930 | else if (*s != '[' && *s != '{') |
3280af22 | 5931 | PL_lex_state = LEX_INTERPEND; |
79072805 LW |
5932 | } |
5933 | } | |
9059aa12 LW |
5934 | if (PL_expect & XFAKEBRACK) { |
5935 | PL_expect &= XENUMMASK; | |
3280af22 | 5936 | PL_bufptr = s; |
cea2e8a9 | 5937 | return yylex(); /* ignore fake brackets */ |
748a9306 | 5938 | } |
cd81e915 | 5939 | start_force(PL_curforce); |
5db06880 NC |
5940 | if (PL_madskills) { |
5941 | curmad('X', newSVpvn(s-1,1)); | |
cd81e915 | 5942 | CURMAD('_', PL_thiswhite); |
5db06880 | 5943 | } |
7c70caa5 | 5944 | force_next(formbrack ? '.' : '}'); |
583c9d5c | 5945 | if (formbrack) LEAVE; |
5db06880 | 5946 | #ifdef PERL_MAD |
cd81e915 | 5947 | if (!PL_thistoken) |
6b29d1f5 | 5948 | PL_thistoken = newSVpvs(""); |
5db06880 | 5949 | #endif |
705fe0e5 FC |
5950 | if (formbrack == 2) { /* means . where arguments were expected */ |
5951 | start_force(PL_curforce); | |
5952 | force_next(';'); | |
96f9b782 | 5953 | TOKEN(FORMRBRACK); |
705fe0e5 | 5954 | } |
79072805 | 5955 | TOKEN(';'); |
378cc40b LW |
5956 | case '&': |
5957 | s++; | |
78cdf107 Z |
5958 | if (*s++ == '&') { |
5959 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
5960 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
5961 | s -= 2; | |
5962 | TOKEN(0); | |
5963 | } | |
a0d0e21e | 5964 | AOPERATOR(ANDAND); |
78cdf107 | 5965 | } |
378cc40b | 5966 | s--; |
3280af22 | 5967 | if (PL_expect == XOPERATOR) { |
041457d9 DM |
5968 | if (PL_bufptr == PL_linestart && ckWARN(WARN_SEMICOLON) |
5969 | && isIDFIRST_lazy_if(s,UTF)) | |
7e2040f0 | 5970 | { |
57843af0 | 5971 | CopLINE_dec(PL_curcop); |
f1f66076 | 5972 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 5973 | CopLINE_inc(PL_curcop); |
463ee0b2 | 5974 | } |
78cdf107 Z |
5975 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
5976 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
5977 | s--; | |
5978 | TOKEN(0); | |
5979 | } | |
79072805 | 5980 | BAop(OP_BIT_AND); |
463ee0b2 | 5981 | } |
79072805 | 5982 | |
c07656ed FC |
5983 | PL_tokenbuf[0] = '&'; |
5984 | s = scan_ident(s - 1, PL_bufend, PL_tokenbuf + 1, | |
5985 | sizeof PL_tokenbuf - 1, TRUE); | |
5986 | if (PL_tokenbuf[1]) { | |
3280af22 | 5987 | PL_expect = XOPERATOR; |
60ac52eb | 5988 | force_ident_maybe_lex('&'); |
463ee0b2 | 5989 | } |
79072805 LW |
5990 | else |
5991 | PREREF('&'); | |
6154021b | 5992 | pl_yylval.ival = (OPpENTERSUB_AMPER<<8); |
79072805 LW |
5993 | TERM('&'); |
5994 | ||
378cc40b LW |
5995 | case '|': |
5996 | s++; | |
78cdf107 Z |
5997 | if (*s++ == '|') { |
5998 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= | |
5999 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) { | |
6000 | s -= 2; | |
6001 | TOKEN(0); | |
6002 | } | |
a0d0e21e | 6003 | AOPERATOR(OROR); |
78cdf107 | 6004 | } |
378cc40b | 6005 | s--; |
78cdf107 Z |
6006 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6007 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_BITWISE)) { | |
6008 | s--; | |
6009 | TOKEN(0); | |
6010 | } | |
79072805 | 6011 | BOop(OP_BIT_OR); |
378cc40b LW |
6012 | case '=': |
6013 | s++; | |
748a9306 | 6014 | { |
90771dc0 | 6015 | const char tmp = *s++; |
78cdf107 Z |
6016 | if (tmp == '=') { |
6017 | if (!PL_lex_allbrackets && | |
6018 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6019 | s -= 2; | |
6020 | TOKEN(0); | |
6021 | } | |
90771dc0 | 6022 | Eop(OP_EQ); |
78cdf107 Z |
6023 | } |
6024 | if (tmp == '>') { | |
6025 | if (!PL_lex_allbrackets && | |
6026 | PL_lex_fakeeof >= LEX_FAKEEOF_COMMA) { | |
6027 | s -= 2; | |
6028 | TOKEN(0); | |
6029 | } | |
90771dc0 | 6030 | OPERATOR(','); |
78cdf107 | 6031 | } |
90771dc0 NC |
6032 | if (tmp == '~') |
6033 | PMop(OP_MATCH); | |
6034 | if (tmp && isSPACE(*s) && ckWARN(WARN_SYNTAX) | |
6035 | && strchr("+-*/%.^&|<",tmp)) | |
6036 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
6037 | "Reversed %c= operator",(int)tmp); | |
6038 | s--; | |
6039 | if (PL_expect == XSTATE && isALPHA(tmp) && | |
6040 | (s == PL_linestart+1 || s[-2] == '\n') ) | |
6041 | { | |
62e4c90a | 6042 | if ((PL_in_eval && !PL_rsfp && !PL_parser->filtered) |
4a7239ff | 6043 | || PL_lex_state != LEX_NORMAL) { |
90771dc0 NC |
6044 | d = PL_bufend; |
6045 | while (s < d) { | |
6046 | if (*s++ == '\n') { | |
6047 | incline(s); | |
6048 | if (strnEQ(s,"=cut",4)) { | |
6049 | s = strchr(s,'\n'); | |
6050 | if (s) | |
6051 | s++; | |
6052 | else | |
6053 | s = d; | |
6054 | incline(s); | |
6055 | goto retry; | |
6056 | } | |
6057 | } | |
a5f75d66 | 6058 | } |
90771dc0 | 6059 | goto retry; |
a5f75d66 | 6060 | } |
5db06880 NC |
6061 | #ifdef PERL_MAD |
6062 | if (PL_madskills) { | |
cd81e915 | 6063 | if (!PL_thiswhite) |
6b29d1f5 | 6064 | PL_thiswhite = newSVpvs(""); |
cd81e915 | 6065 | sv_catpvn(PL_thiswhite, PL_linestart, |
5db06880 NC |
6066 | PL_bufend - PL_linestart); |
6067 | } | |
6068 | #endif | |
90771dc0 | 6069 | s = PL_bufend; |
737c24fc | 6070 | PL_parser->in_pod = 1; |
90771dc0 | 6071 | goto retry; |
a5f75d66 | 6072 | } |
a0d0e21e | 6073 | } |
64a40898 | 6074 | if (PL_expect == XBLOCK) { |
c35e046a | 6075 | const char *t = s; |
51882d45 | 6076 | #ifdef PERL_STRICT_CR |
c35e046a | 6077 | while (SPACE_OR_TAB(*t)) |
51882d45 | 6078 | #else |
c35e046a | 6079 | while (SPACE_OR_TAB(*t) || *t == '\r') |
51882d45 | 6080 | #endif |
c35e046a | 6081 | t++; |
a0d0e21e | 6082 | if (*t == '\n' || *t == '#') { |
705fe0e5 | 6083 | formbrack = 1; |
583c9d5c FC |
6084 | ENTER; |
6085 | SAVEI8(PL_parser->form_lex_state); | |
64a40898 | 6086 | SAVEI32(PL_lex_formbrack); |
583c9d5c | 6087 | PL_parser->form_lex_state = PL_lex_state; |
64a40898 | 6088 | PL_lex_formbrack = PL_lex_brackets + 1; |
a0d0e21e LW |
6089 | goto leftbracket; |
6090 | } | |
79072805 | 6091 | } |
78cdf107 Z |
6092 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { |
6093 | s--; | |
6094 | TOKEN(0); | |
6095 | } | |
6154021b | 6096 | pl_yylval.ival = 0; |
a0d0e21e | 6097 | OPERATOR(ASSIGNOP); |
378cc40b LW |
6098 | case '!': |
6099 | s++; | |
90771dc0 NC |
6100 | { |
6101 | const char tmp = *s++; | |
6102 | if (tmp == '=') { | |
6103 | /* was this !=~ where !~ was meant? | |
6104 | * warn on m:!=~\s+([/?]|[msy]\W|tr\W): */ | |
6105 | ||
6106 | if (*s == '~' && ckWARN(WARN_SYNTAX)) { | |
6107 | const char *t = s+1; | |
6108 | ||
6109 | while (t < PL_bufend && isSPACE(*t)) | |
6110 | ++t; | |
6111 | ||
6112 | if (*t == '/' || *t == '?' || | |
6113 | ((*t == 'm' || *t == 's' || *t == 'y') | |
6114 | && !isALNUM(t[1])) || | |
6115 | (*t == 't' && t[1] == 'r' && !isALNUM(t[2]))) | |
6116 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), | |
6117 | "!=~ should be !~"); | |
6118 | } | |
78cdf107 Z |
6119 | if (!PL_lex_allbrackets && |
6120 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6121 | s -= 2; | |
6122 | TOKEN(0); | |
6123 | } | |
90771dc0 NC |
6124 | Eop(OP_NE); |
6125 | } | |
6126 | if (tmp == '~') | |
6127 | PMop(OP_NOT); | |
6128 | } | |
378cc40b LW |
6129 | s--; |
6130 | OPERATOR('!'); | |
6131 | case '<': | |
3280af22 | 6132 | if (PL_expect != XOPERATOR) { |
93a17b20 | 6133 | if (s[1] != '<' && !strchr(s,'>')) |
2f3197b3 | 6134 | check_uni(); |
79072805 LW |
6135 | if (s[1] == '<') |
6136 | s = scan_heredoc(s); | |
6137 | else | |
6138 | s = scan_inputsymbol(s); | |
78a635de FC |
6139 | PL_expect = XOPERATOR; |
6140 | TOKEN(sublex_start()); | |
378cc40b LW |
6141 | } |
6142 | s++; | |
90771dc0 NC |
6143 | { |
6144 | char tmp = *s++; | |
78cdf107 Z |
6145 | if (tmp == '<') { |
6146 | if (*s == '=' && !PL_lex_allbrackets && | |
6147 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6148 | s -= 2; | |
6149 | TOKEN(0); | |
6150 | } | |
90771dc0 | 6151 | SHop(OP_LEFT_SHIFT); |
78cdf107 | 6152 | } |
90771dc0 NC |
6153 | if (tmp == '=') { |
6154 | tmp = *s++; | |
78cdf107 Z |
6155 | if (tmp == '>') { |
6156 | if (!PL_lex_allbrackets && | |
6157 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6158 | s -= 3; | |
6159 | TOKEN(0); | |
6160 | } | |
90771dc0 | 6161 | Eop(OP_NCMP); |
78cdf107 | 6162 | } |
90771dc0 | 6163 | s--; |
78cdf107 Z |
6164 | if (!PL_lex_allbrackets && |
6165 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6166 | s -= 2; | |
6167 | TOKEN(0); | |
6168 | } | |
90771dc0 NC |
6169 | Rop(OP_LE); |
6170 | } | |
395c3793 | 6171 | } |
378cc40b | 6172 | s--; |
78cdf107 Z |
6173 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
6174 | s--; | |
6175 | TOKEN(0); | |
6176 | } | |
79072805 | 6177 | Rop(OP_LT); |
378cc40b LW |
6178 | case '>': |
6179 | s++; | |
90771dc0 NC |
6180 | { |
6181 | const char tmp = *s++; | |
78cdf107 Z |
6182 | if (tmp == '>') { |
6183 | if (*s == '=' && !PL_lex_allbrackets && | |
6184 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6185 | s -= 2; | |
6186 | TOKEN(0); | |
6187 | } | |
90771dc0 | 6188 | SHop(OP_RIGHT_SHIFT); |
78cdf107 Z |
6189 | } |
6190 | else if (tmp == '=') { | |
6191 | if (!PL_lex_allbrackets && | |
6192 | PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { | |
6193 | s -= 2; | |
6194 | TOKEN(0); | |
6195 | } | |
90771dc0 | 6196 | Rop(OP_GE); |
78cdf107 | 6197 | } |
90771dc0 | 6198 | } |
378cc40b | 6199 | s--; |
78cdf107 Z |
6200 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) { |
6201 | s--; | |
6202 | TOKEN(0); | |
6203 | } | |
79072805 | 6204 | Rop(OP_GT); |
378cc40b LW |
6205 | |
6206 | case '$': | |
bbce6d69 | 6207 | CLINE; |
6208 | ||
3280af22 NIS |
6209 | if (PL_expect == XOPERATOR) { |
6210 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6211 | return deprecate_commaless_var_list(); |
a0d0e21e | 6212 | } |
8990e307 | 6213 | } |
a0d0e21e | 6214 | |
c0b977fd | 6215 | if (s[1] == '#' && (isIDFIRST_lazy_if(s+2,UTF) || strchr("{$:+-@", s[2]))) { |
3280af22 | 6216 | PL_tokenbuf[0] = '@'; |
376b8730 SM |
6217 | s = scan_ident(s + 1, PL_bufend, PL_tokenbuf + 1, |
6218 | sizeof PL_tokenbuf - 1, FALSE); | |
6219 | if (PL_expect == XOPERATOR) | |
6220 | no_op("Array length", s); | |
3280af22 | 6221 | if (!PL_tokenbuf[1]) |
a0d0e21e | 6222 | PREREF(DOLSHARP); |
3280af22 | 6223 | PL_expect = XOPERATOR; |
60ac52eb | 6224 | force_ident_maybe_lex('#'); |
463ee0b2 | 6225 | TOKEN(DOLSHARP); |
79072805 | 6226 | } |
bbce6d69 | 6227 | |
3280af22 | 6228 | PL_tokenbuf[0] = '$'; |
376b8730 SM |
6229 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, |
6230 | sizeof PL_tokenbuf - 1, FALSE); | |
6231 | if (PL_expect == XOPERATOR) | |
6232 | no_op("Scalar", s); | |
3280af22 NIS |
6233 | if (!PL_tokenbuf[1]) { |
6234 | if (s == PL_bufend) | |
bbce6d69 | 6235 | yyerror("Final $ should be \\$ or $name"); |
6236 | PREREF('$'); | |
8990e307 | 6237 | } |
a0d0e21e | 6238 | |
ff68c719 | 6239 | d = s; |
90771dc0 NC |
6240 | { |
6241 | const char tmp = *s; | |
ae28bb2a | 6242 | if (PL_lex_state == LEX_NORMAL || PL_lex_brackets) |
29595ff2 | 6243 | s = SKIPSPACE1(s); |
ff68c719 | 6244 | |
90771dc0 NC |
6245 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) |
6246 | && intuit_more(s)) { | |
6247 | if (*s == '[') { | |
6248 | PL_tokenbuf[0] = '@'; | |
6249 | if (ckWARN(WARN_SYNTAX)) { | |
c35e046a AL |
6250 | char *t = s+1; |
6251 | ||
6252 | while (isSPACE(*t) || isALNUM_lazy_if(t,UTF) || *t == '$') | |
6253 | t++; | |
90771dc0 | 6254 | if (*t++ == ',') { |
29595ff2 | 6255 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
90771dc0 NC |
6256 | while (t < PL_bufend && *t != ']') |
6257 | t++; | |
9014280d | 6258 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
90771dc0 | 6259 | "Multidimensional syntax %.*s not supported", |
36c7798d | 6260 | (int)((t - PL_bufptr) + 1), PL_bufptr); |
90771dc0 | 6261 | } |
748a9306 | 6262 | } |
93a17b20 | 6263 | } |
90771dc0 NC |
6264 | else if (*s == '{') { |
6265 | char *t; | |
6266 | PL_tokenbuf[0] = '%'; | |
6267 | if (strEQ(PL_tokenbuf+1, "SIG") && ckWARN(WARN_SYNTAX) | |
6268 | && (t = strchr(s, '}')) && (t = strchr(t, '='))) | |
6269 | { | |
6270 | char tmpbuf[sizeof PL_tokenbuf]; | |
c35e046a AL |
6271 | do { |
6272 | t++; | |
6273 | } while (isSPACE(*t)); | |
90771dc0 | 6274 | if (isIDFIRST_lazy_if(t,UTF)) { |
780a5241 | 6275 | STRLEN len; |
90771dc0 | 6276 | t = scan_word(t, tmpbuf, sizeof tmpbuf, TRUE, |
780a5241 | 6277 | &len); |
c35e046a AL |
6278 | while (isSPACE(*t)) |
6279 | t++; | |
4c01a014 BF |
6280 | if (*t == ';' |
6281 | && get_cvn_flags(tmpbuf, len, UTF ? SVf_UTF8 : 0)) | |
90771dc0 | 6282 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
4c01a014 BF |
6283 | "You need to quote \"%"SVf"\"", |
6284 | SVfARG(newSVpvn_flags(tmpbuf, len, | |
6285 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
90771dc0 NC |
6286 | } |
6287 | } | |
6288 | } | |
93a17b20 | 6289 | } |
bbce6d69 | 6290 | |
90771dc0 NC |
6291 | PL_expect = XOPERATOR; |
6292 | if (PL_lex_state == LEX_NORMAL && isSPACE((char)tmp)) { | |
6293 | const bool islop = (PL_last_lop == PL_oldoldbufptr); | |
6294 | if (!islop || PL_last_lop_op == OP_GREPSTART) | |
6295 | PL_expect = XOPERATOR; | |
6296 | else if (strchr("$@\"'`q", *s)) | |
6297 | PL_expect = XTERM; /* e.g. print $fh "foo" */ | |
6298 | else if (strchr("&*<%", *s) && isIDFIRST_lazy_if(s+1,UTF)) | |
6299 | PL_expect = XTERM; /* e.g. print $fh &sub */ | |
6300 | else if (isIDFIRST_lazy_if(s,UTF)) { | |
6301 | char tmpbuf[sizeof PL_tokenbuf]; | |
6302 | int t2; | |
6303 | scan_word(s, tmpbuf, sizeof tmpbuf, TRUE, &len); | |
5458a98a | 6304 | if ((t2 = keyword(tmpbuf, len, 0))) { |
90771dc0 NC |
6305 | /* binary operators exclude handle interpretations */ |
6306 | switch (t2) { | |
6307 | case -KEY_x: | |
6308 | case -KEY_eq: | |
6309 | case -KEY_ne: | |
6310 | case -KEY_gt: | |
6311 | case -KEY_lt: | |
6312 | case -KEY_ge: | |
6313 | case -KEY_le: | |
6314 | case -KEY_cmp: | |
6315 | break; | |
6316 | default: | |
6317 | PL_expect = XTERM; /* e.g. print $fh length() */ | |
6318 | break; | |
6319 | } | |
6320 | } | |
6321 | else { | |
6322 | PL_expect = XTERM; /* e.g. print $fh subr() */ | |
84902520 TB |
6323 | } |
6324 | } | |
90771dc0 NC |
6325 | else if (isDIGIT(*s)) |
6326 | PL_expect = XTERM; /* e.g. print $fh 3 */ | |
6327 | else if (*s == '.' && isDIGIT(s[1])) | |
6328 | PL_expect = XTERM; /* e.g. print $fh .3 */ | |
6329 | else if ((*s == '?' || *s == '-' || *s == '+') | |
6330 | && !isSPACE(s[1]) && s[1] != '=') | |
6331 | PL_expect = XTERM; /* e.g. print $fh -1 */ | |
6332 | else if (*s == '/' && !isSPACE(s[1]) && s[1] != '=' | |
6333 | && s[1] != '/') | |
6334 | PL_expect = XTERM; /* e.g. print $fh /.../ | |
6335 | XXX except DORDOR operator | |
6336 | */ | |
6337 | else if (*s == '<' && s[1] == '<' && !isSPACE(s[2]) | |
6338 | && s[2] != '=') | |
6339 | PL_expect = XTERM; /* print $fh <<"EOF" */ | |
93a17b20 | 6340 | } |
bbce6d69 | 6341 | } |
60ac52eb | 6342 | force_ident_maybe_lex('$'); |
79072805 | 6343 | TOKEN('$'); |
378cc40b LW |
6344 | |
6345 | case '@': | |
3280af22 | 6346 | if (PL_expect == XOPERATOR) |
bbce6d69 | 6347 | no_op("Array", s); |
3280af22 NIS |
6348 | PL_tokenbuf[0] = '@'; |
6349 | s = scan_ident(s, PL_bufend, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, FALSE); | |
6350 | if (!PL_tokenbuf[1]) { | |
bbce6d69 | 6351 | PREREF('@'); |
6352 | } | |
3280af22 | 6353 | if (PL_lex_state == LEX_NORMAL) |
29595ff2 | 6354 | s = SKIPSPACE1(s); |
3280af22 | 6355 | if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop) && intuit_more(s)) { |
bbce6d69 | 6356 | if (*s == '{') |
3280af22 | 6357 | PL_tokenbuf[0] = '%'; |
a0d0e21e LW |
6358 | |
6359 | /* Warn about @ where they meant $. */ | |
041457d9 DM |
6360 | if (*s == '[' || *s == '{') { |
6361 | if (ckWARN(WARN_SYNTAX)) { | |
f54cb97a | 6362 | const char *t = s + 1; |
7e2040f0 | 6363 | while (*t && (isALNUM_lazy_if(t,UTF) || strchr(" \t$#+-'\"", *t))) |
b9e186cd | 6364 | t += UTF ? UTF8SKIP(t) : 1; |
a0d0e21e LW |
6365 | if (*t == '}' || *t == ']') { |
6366 | t++; | |
29595ff2 | 6367 | PL_bufptr = PEEKSPACE(PL_bufptr); /* XXX can realloc */ |
dcbac5bb | 6368 | /* diag_listed_as: Scalar value @%s[%s] better written as $%s[%s] */ |
9014280d | 6369 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
b9e186cd BF |
6370 | "Scalar value %"SVf" better written as $%"SVf, |
6371 | SVfARG(newSVpvn_flags(PL_bufptr, (STRLEN)(t-PL_bufptr), | |
6372 | SVs_TEMP | (UTF ? SVf_UTF8 : 0 ))), | |
6373 | SVfARG(newSVpvn_flags(PL_bufptr+1, (STRLEN)(t-PL_bufptr-1), | |
6374 | SVs_TEMP | (UTF ? SVf_UTF8 : 0 )))); | |
a0d0e21e | 6375 | } |
93a17b20 LW |
6376 | } |
6377 | } | |
463ee0b2 | 6378 | } |
60ac52eb FC |
6379 | PL_expect = XOPERATOR; |
6380 | force_ident_maybe_lex('@'); | |
79072805 | 6381 | TERM('@'); |
378cc40b | 6382 | |
c963b151 | 6383 | case '/': /* may be division, defined-or, or pattern */ |
6f33ba73 | 6384 | if (PL_expect == XTERMORDORDOR && s[1] == '/') { |
78cdf107 Z |
6385 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6386 | (s[2] == '=' ? LEX_FAKEEOF_ASSIGN : LEX_FAKEEOF_LOGIC)) | |
6387 | TOKEN(0); | |
6f33ba73 RGS |
6388 | s += 2; |
6389 | AOPERATOR(DORDOR); | |
6390 | } | |
c963b151 | 6391 | case '?': /* may either be conditional or pattern */ |
be25f609 | 6392 | if (PL_expect == XOPERATOR) { |
90771dc0 | 6393 | char tmp = *s++; |
c963b151 | 6394 | if(tmp == '?') { |
78cdf107 Z |
6395 | if (!PL_lex_allbrackets && |
6396 | PL_lex_fakeeof >= LEX_FAKEEOF_IFELSE) { | |
6397 | s--; | |
6398 | TOKEN(0); | |
6399 | } | |
6400 | PL_lex_allbrackets++; | |
be25f609 | 6401 | OPERATOR('?'); |
c963b151 BD |
6402 | } |
6403 | else { | |
6404 | tmp = *s++; | |
6405 | if(tmp == '/') { | |
6406 | /* A // operator. */ | |
78cdf107 Z |
6407 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= |
6408 | (*s == '=' ? LEX_FAKEEOF_ASSIGN : | |
6409 | LEX_FAKEEOF_LOGIC)) { | |
6410 | s -= 2; | |
6411 | TOKEN(0); | |
6412 | } | |
c963b151 BD |
6413 | AOPERATOR(DORDOR); |
6414 | } | |
6415 | else { | |
6416 | s--; | |
78cdf107 Z |
6417 | if (*s == '=' && !PL_lex_allbrackets && |
6418 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6419 | s--; | |
6420 | TOKEN(0); | |
6421 | } | |
c963b151 BD |
6422 | Mop(OP_DIVIDE); |
6423 | } | |
6424 | } | |
6425 | } | |
6426 | else { | |
6427 | /* Disable warning on "study /blah/" */ | |
6428 | if (PL_oldoldbufptr == PL_last_uni | |
6429 | && (*PL_last_uni != 's' || s - PL_last_uni < 5 | |
6430 | || memNE(PL_last_uni, "study", 5) | |
6431 | || isALNUM_lazy_if(PL_last_uni+5,UTF) | |
6432 | )) | |
6433 | check_uni(); | |
725a61d7 Z |
6434 | if (*s == '?') |
6435 | deprecate("?PATTERN? without explicit operator"); | |
c963b151 BD |
6436 | s = scan_pat(s,OP_MATCH); |
6437 | TERM(sublex_start()); | |
6438 | } | |
378cc40b LW |
6439 | |
6440 | case '.': | |
51882d45 GS |
6441 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack |
6442 | #ifdef PERL_STRICT_CR | |
6443 | && s[1] == '\n' | |
6444 | #else | |
6445 | && (s[1] == '\n' || (s[1] == '\r' && s[2] == '\n')) | |
6446 | #endif | |
6447 | && (s == PL_linestart || s[-1] == '\n') ) | |
6448 | { | |
3280af22 | 6449 | PL_expect = XSTATE; |
705fe0e5 | 6450 | formbrack = 2; /* dot seen where arguments expected */ |
79072805 LW |
6451 | goto rightbracket; |
6452 | } | |
be25f609 | 6453 | if (PL_expect == XSTATE && s[1] == '.' && s[2] == '.') { |
6454 | s += 3; | |
6455 | OPERATOR(YADAYADA); | |
6456 | } | |
3280af22 | 6457 | if (PL_expect == XOPERATOR || !isDIGIT(s[1])) { |
90771dc0 | 6458 | char tmp = *s++; |
a687059c | 6459 | if (*s == tmp) { |
78cdf107 Z |
6460 | if (!PL_lex_allbrackets && |
6461 | PL_lex_fakeeof >= LEX_FAKEEOF_RANGE) { | |
6462 | s--; | |
6463 | TOKEN(0); | |
6464 | } | |
a687059c | 6465 | s++; |
2f3197b3 LW |
6466 | if (*s == tmp) { |
6467 | s++; | |
6154021b | 6468 | pl_yylval.ival = OPf_SPECIAL; |
2f3197b3 LW |
6469 | } |
6470 | else | |
6154021b | 6471 | pl_yylval.ival = 0; |
378cc40b | 6472 | OPERATOR(DOTDOT); |
a687059c | 6473 | } |
78cdf107 Z |
6474 | if (*s == '=' && !PL_lex_allbrackets && |
6475 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) { | |
6476 | s--; | |
6477 | TOKEN(0); | |
6478 | } | |
79072805 | 6479 | Aop(OP_CONCAT); |
378cc40b LW |
6480 | } |
6481 | /* FALL THROUGH */ | |
6482 | case '0': case '1': case '2': case '3': case '4': | |
6483 | case '5': case '6': case '7': case '8': case '9': | |
6154021b | 6484 | s = scan_num(s, &pl_yylval); |
931e0695 | 6485 | DEBUG_T( { printbuf("### Saw number in %s\n", s); } ); |
3280af22 | 6486 | if (PL_expect == XOPERATOR) |
8990e307 | 6487 | no_op("Number",s); |
79072805 LW |
6488 | TERM(THING); |
6489 | ||
6490 | case '\'': | |
d24ca0c5 | 6491 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
931e0695 | 6492 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6493 | if (PL_expect == XOPERATOR) { |
6494 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6495 | return deprecate_commaless_var_list(); |
a0d0e21e | 6496 | } |
463ee0b2 | 6497 | else |
8990e307 | 6498 | no_op("String",s); |
463ee0b2 | 6499 | } |
79072805 | 6500 | if (!s) |
d4c19fe8 | 6501 | missingterm(NULL); |
6154021b | 6502 | pl_yylval.ival = OP_CONST; |
79072805 LW |
6503 | TERM(sublex_start()); |
6504 | ||
6505 | case '"': | |
d24ca0c5 | 6506 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
931e0695 | 6507 | DEBUG_T( { printbuf("### Saw string before %s\n", s); } ); |
3280af22 NIS |
6508 | if (PL_expect == XOPERATOR) { |
6509 | if (PL_lex_formbrack && PL_lex_brackets == PL_lex_formbrack) { | |
8290c323 | 6510 | return deprecate_commaless_var_list(); |
a0d0e21e | 6511 | } |
463ee0b2 | 6512 | else |
8990e307 | 6513 | no_op("String",s); |
463ee0b2 | 6514 | } |
79072805 | 6515 | if (!s) |
d4c19fe8 | 6516 | missingterm(NULL); |
6154021b | 6517 | pl_yylval.ival = OP_CONST; |
cfd0369c NC |
6518 | /* FIXME. I think that this can be const if char *d is replaced by |
6519 | more localised variables. */ | |
3280af22 | 6520 | for (d = SvPV(PL_lex_stuff, len); len; len--, d++) { |
63cd0674 | 6521 | if (*d == '$' || *d == '@' || *d == '\\' || !UTF8_IS_INVARIANT((U8)*d)) { |
6154021b | 6522 | pl_yylval.ival = OP_STRINGIFY; |
4633a7c4 LW |
6523 | break; |
6524 | } | |
6525 | } | |
79072805 LW |
6526 | TERM(sublex_start()); |
6527 | ||
6528 | case '`': | |
d24ca0c5 | 6529 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
931e0695 | 6530 | DEBUG_T( { printbuf("### Saw backtick string before %s\n", s); } ); |
3280af22 | 6531 | if (PL_expect == XOPERATOR) |
8990e307 | 6532 | no_op("Backticks",s); |
79072805 | 6533 | if (!s) |
d4c19fe8 | 6534 | missingterm(NULL); |
9b201d7d | 6535 | readpipe_override(); |
79072805 LW |
6536 | TERM(sublex_start()); |
6537 | ||
6538 | case '\\': | |
6539 | s++; | |
a2a5de95 NC |
6540 | if (PL_lex_inwhat && isDIGIT(*s)) |
6541 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX),"Can't use \\%c to mean $%c in expression", | |
6542 | *s, *s); | |
3280af22 | 6543 | if (PL_expect == XOPERATOR) |
8990e307 | 6544 | no_op("Backslash",s); |
79072805 LW |
6545 | OPERATOR(REFGEN); |
6546 | ||
a7cb1f99 | 6547 | case 'v': |
e526c9e6 | 6548 | if (isDIGIT(s[1]) && PL_expect != XOPERATOR) { |
f54cb97a | 6549 | char *start = s + 2; |
dd629d5b | 6550 | while (isDIGIT(*start) || *start == '_') |
a7cb1f99 GS |
6551 | start++; |
6552 | if (*start == '.' && isDIGIT(start[1])) { | |
6154021b | 6553 | s = scan_num(s, &pl_yylval); |
a7cb1f99 GS |
6554 | TERM(THING); |
6555 | } | |
e9d2327d FC |
6556 | else if ((*start == ':' && start[1] == ':') |
6557 | || (PL_expect == XSTATE && *start == ':')) | |
6558 | goto keylookup; | |
6559 | else if (PL_expect == XSTATE) { | |
6560 | d = start; | |
6561 | while (d < PL_bufend && isSPACE(*d)) d++; | |
6562 | if (*d == ':') goto keylookup; | |
6563 | } | |
e526c9e6 | 6564 | /* avoid v123abc() or $h{v1}, allow C<print v10;> */ |
e9d2327d | 6565 | if (!isALPHA(*start) && (PL_expect == XTERM |
6f33ba73 RGS |
6566 | || PL_expect == XREF || PL_expect == XSTATE |
6567 | || PL_expect == XTERMORDORDOR)) { | |
af9f5953 BF |
6568 | GV *const gv = gv_fetchpvn_flags(s, start - s, |
6569 | UTF ? SVf_UTF8 : 0, SVt_PVCV); | |
e526c9e6 | 6570 | if (!gv) { |
6154021b | 6571 | s = scan_num(s, &pl_yylval); |
e526c9e6 GS |
6572 | TERM(THING); |
6573 | } | |
6574 | } | |
a7cb1f99 GS |
6575 | } |
6576 | goto keylookup; | |
79072805 | 6577 | case 'x': |
3280af22 | 6578 | if (isDIGIT(s[1]) && PL_expect == XOPERATOR) { |
79072805 LW |
6579 | s++; |
6580 | Mop(OP_REPEAT); | |
2f3197b3 | 6581 | } |
79072805 LW |
6582 | goto keylookup; |
6583 | ||
378cc40b | 6584 | case '_': |
79072805 LW |
6585 | case 'a': case 'A': |
6586 | case 'b': case 'B': | |
6587 | case 'c': case 'C': | |
6588 | case 'd': case 'D': | |
6589 | case 'e': case 'E': | |
6590 | case 'f': case 'F': | |
6591 | case 'g': case 'G': | |
6592 | case 'h': case 'H': | |
6593 | case 'i': case 'I': | |
6594 | case 'j': case 'J': | |
6595 | case 'k': case 'K': | |
6596 | case 'l': case 'L': | |
6597 | case 'm': case 'M': | |
6598 | case 'n': case 'N': | |
6599 | case 'o': case 'O': | |
6600 | case 'p': case 'P': | |
6601 | case 'q': case 'Q': | |
6602 | case 'r': case 'R': | |
6603 | case 's': case 'S': | |
6604 | case 't': case 'T': | |
6605 | case 'u': case 'U': | |
a7cb1f99 | 6606 | case 'V': |
79072805 LW |
6607 | case 'w': case 'W': |
6608 | case 'X': | |
6609 | case 'y': case 'Y': | |
6610 | case 'z': case 'Z': | |
6611 | ||
49dc05e3 | 6612 | keylookup: { |
88e1f1a2 | 6613 | bool anydelim; |
18f70389 | 6614 | bool lex; |
90771dc0 | 6615 | I32 tmp; |
18f70389 | 6616 | SV *sv; |
73f3e228 FC |
6617 | CV *cv; |
6618 | PADOFFSET off; | |
6619 | OP *rv2cv_op; | |
10edeb5d | 6620 | |
18f70389 | 6621 | lex = FALSE; |
10edeb5d | 6622 | orig_keyword = 0; |
73f3e228 | 6623 | off = 0; |
18f70389 | 6624 | sv = NULL; |
73f3e228 | 6625 | cv = NULL; |
10edeb5d JH |
6626 | gv = NULL; |
6627 | gvp = NULL; | |
73f3e228 | 6628 | rv2cv_op = NULL; |
49dc05e3 | 6629 | |
3280af22 NIS |
6630 | PL_bufptr = s; |
6631 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); | |
8ebc5c01 | 6632 | |
6633 | /* Some keywords can be followed by any delimiter, including ':' */ | |
361d9b55 | 6634 | anydelim = word_takes_any_delimeter(PL_tokenbuf, len); |
8ebc5c01 | 6635 | |
6636 | /* x::* is just a word, unless x is "CORE" */ | |
88e1f1a2 | 6637 | if (!anydelim && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE")) |
4633a7c4 LW |
6638 | goto just_a_word; |
6639 | ||
3643fb5f | 6640 | d = s; |
3280af22 | 6641 | while (d < PL_bufend && isSPACE(*d)) |
3643fb5f CS |
6642 | d++; /* no comments skipped here, or s### is misparsed */ |
6643 | ||
748a9306 | 6644 | /* Is this a word before a => operator? */ |
1c3923b3 | 6645 | if (*d == '=' && d[1] == '>') { |
748a9306 | 6646 | CLINE; |
6154021b | 6647 | pl_yylval.opval |
d0a148a6 NC |
6648 | = (OP*)newSVOP(OP_CONST, 0, |
6649 | S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, len)); | |
6154021b | 6650 | pl_yylval.opval->op_private = OPpCONST_BARE; |
748a9306 LW |
6651 | TERM(WORD); |
6652 | } | |
6653 | ||
88e1f1a2 JV |
6654 | /* Check for plugged-in keyword */ |
6655 | { | |
6656 | OP *o; | |
6657 | int result; | |
6658 | char *saved_bufptr = PL_bufptr; | |
6659 | PL_bufptr = s; | |
16c91539 | 6660 | result = PL_keyword_plugin(aTHX_ PL_tokenbuf, len, &o); |
88e1f1a2 JV |
6661 | s = PL_bufptr; |
6662 | if (result == KEYWORD_PLUGIN_DECLINE) { | |
6663 | /* not a plugged-in keyword */ | |
6664 | PL_bufptr = saved_bufptr; | |
6665 | } else if (result == KEYWORD_PLUGIN_STMT) { | |
6666 | pl_yylval.opval = o; | |
6667 | CLINE; | |
6668 | PL_expect = XSTATE; | |
6669 | return REPORT(PLUGSTMT); | |
6670 | } else if (result == KEYWORD_PLUGIN_EXPR) { | |
6671 | pl_yylval.opval = o; | |
6672 | CLINE; | |
6673 | PL_expect = XOPERATOR; | |
6674 | return REPORT(PLUGEXPR); | |
6675 | } else { | |
6676 | Perl_croak(aTHX_ "Bad plugin affecting keyword '%s'", | |
6677 | PL_tokenbuf); | |
6678 | } | |
6679 | } | |
6680 | ||
6681 | /* Check for built-in keyword */ | |
6682 | tmp = keyword(PL_tokenbuf, len, 0); | |
6683 | ||
6684 | /* Is this a label? */ | |
6685 | if (!anydelim && PL_expect == XSTATE | |
6686 | && d < PL_bufend && *d == ':' && *(d + 1) != ':') { | |
88e1f1a2 | 6687 | s = d + 1; |
5db1eb8d BF |
6688 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
6689 | newSVpvn_flags(PL_tokenbuf, | |
6690 | len, UTF ? SVf_UTF8 : 0)); | |
88e1f1a2 JV |
6691 | CLINE; |
6692 | TOKEN(LABEL); | |
6693 | } | |
6694 | ||
18f70389 FC |
6695 | /* Check for lexical sub */ |
6696 | if (PL_expect != XOPERATOR) { | |
6697 | char tmpbuf[sizeof PL_tokenbuf + 1]; | |
18f70389 FC |
6698 | *tmpbuf = '&'; |
6699 | Copy(PL_tokenbuf, tmpbuf+1, len, char); | |
6700 | off = pad_findmy_pvn(tmpbuf, len+1, UTF ? SVf_UTF8 : 0); | |
6701 | if (off != NOT_IN_PAD) { | |
73f3e228 | 6702 | assert(off); /* we assume this is boolean-true below */ |
18f70389 FC |
6703 | if (PAD_COMPNAME_FLAGS_isOUR(off)) { |
6704 | HV * const stash = PAD_COMPNAME_OURSTASH(off); | |
6705 | HEK * const stashname = HvNAME_HEK(stash); | |
6706 | sv = newSVhek(stashname); | |
6707 | sv_catpvs(sv, "::"); | |
6708 | sv_catpvn_flags(sv, PL_tokenbuf, len, | |
6709 | (UTF ? SV_CATUTF8 : SV_CATBYTES)); | |
6710 | gv = gv_fetchsv(sv, GV_NOADD_NOINIT | SvUTF8(sv), | |
6711 | SVt_PVCV); | |
73f3e228 | 6712 | off = 0; |
18f70389 | 6713 | } |
73f3e228 FC |
6714 | else { |
6715 | rv2cv_op = newOP(OP_PADANY, 0); | |
6716 | rv2cv_op->op_targ = off; | |
6717 | rv2cv_op = (OP*)newCVREF(0, rv2cv_op); | |
6718 | cv = (CV *)PAD_SV(off); | |
6719 | } | |
6720 | lex = TRUE; | |
6721 | goto just_a_word; | |
18f70389 | 6722 | } |
73f3e228 | 6723 | off = 0; |
18f70389 FC |
6724 | } |
6725 | ||
a0d0e21e | 6726 | if (tmp < 0) { /* second-class keyword? */ |
cbbf8932 AL |
6727 | GV *ogv = NULL; /* override (winner) */ |
6728 | GV *hgv = NULL; /* hidden (loser) */ | |
3280af22 | 6729 | if (PL_expect != XOPERATOR && (*s != ':' || s[1] != ':')) { |
56f7f34b | 6730 | CV *cv; |
af9f5953 BF |
6731 | if ((gv = gv_fetchpvn_flags(PL_tokenbuf, len, |
6732 | UTF ? SVf_UTF8 : 0, SVt_PVCV)) && | |
56f7f34b CS |
6733 | (cv = GvCVu(gv))) |
6734 | { | |
6735 | if (GvIMPORTED_CV(gv)) | |
6736 | ogv = gv; | |
6737 | else if (! CvMETHOD(cv)) | |
6738 | hgv = gv; | |
6739 | } | |
6740 | if (!ogv && | |
af9f5953 | 6741 | (gvp = (GV**)hv_fetch(PL_globalstash, PL_tokenbuf, |
c60dbbc3 | 6742 | UTF ? -(I32)len : (I32)len, FALSE)) && |
9e0d86f8 | 6743 | (gv = *gvp) && isGV_with_GP(gv) && |
56f7f34b CS |
6744 | GvCVu(gv) && GvIMPORTED_CV(gv)) |
6745 | { | |
6746 | ogv = gv; | |
6747 | } | |
6748 | } | |
6749 | if (ogv) { | |
30fe34ed | 6750 | orig_keyword = tmp; |
56f7f34b | 6751 | tmp = 0; /* overridden by import or by GLOBAL */ |
6e7b2336 GS |
6752 | } |
6753 | else if (gv && !gvp | |
6754 | && -tmp==KEY_lock /* XXX generalizable kludge */ | |
47f9f84c | 6755 | && GvCVu(gv)) |
6e7b2336 GS |
6756 | { |
6757 | tmp = 0; /* any sub overrides "weak" keyword */ | |
a0d0e21e | 6758 | } |
56f7f34b CS |
6759 | else { /* no override */ |
6760 | tmp = -tmp; | |
a2a5de95 NC |
6761 | if (tmp == KEY_dump) { |
6762 | Perl_ck_warner(aTHX_ packWARN(WARN_MISC), | |
6763 | "dump() better written as CORE::dump()"); | |
ac206dc8 | 6764 | } |
a0714e2c | 6765 | gv = NULL; |
56f7f34b | 6766 | gvp = 0; |
a2a5de95 NC |
6767 | if (hgv && tmp != KEY_x && tmp != KEY_CORE) /* never ambiguous */ |
6768 | Perl_ck_warner(aTHX_ packWARN(WARN_AMBIGUOUS), | |
de2b151d JM |
6769 | "Ambiguous call resolved as CORE::%s(), " |
6770 | "qualify as such or use &", | |
6771 | GvENAME(hgv)); | |
49dc05e3 | 6772 | } |
a0d0e21e LW |
6773 | } |
6774 | ||
6775 | reserved_word: | |
6776 | switch (tmp) { | |
79072805 LW |
6777 | |
6778 | default: /* not a keyword */ | |
0bfa2a8a NC |
6779 | /* Trade off - by using this evil construction we can pull the |
6780 | variable gv into the block labelled keylookup. If not, then | |
6781 | we have to give it function scope so that the goto from the | |
6782 | earlier ':' case doesn't bypass the initialisation. */ | |
6783 | if (0) { | |
6784 | just_a_word_zero_gv: | |
73f3e228 FC |
6785 | sv = NULL; |
6786 | cv = NULL; | |
0bfa2a8a NC |
6787 | gv = NULL; |
6788 | gvp = NULL; | |
73f3e228 | 6789 | rv2cv_op = NULL; |
8bee0991 | 6790 | orig_keyword = 0; |
18f70389 FC |
6791 | lex = 0; |
6792 | off = 0; | |
0bfa2a8a | 6793 | } |
93a17b20 | 6794 | just_a_word: { |
ce29ac45 | 6795 | int pkgname = 0; |
f54cb97a | 6796 | const char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]); |
898c3bca FC |
6797 | const char penultchar = |
6798 | lastchar && PL_bufptr - 2 >= PL_linestart | |
6799 | ? PL_bufptr[-2] | |
6800 | : 0; | |
5db06880 | 6801 | #ifdef PERL_MAD |
cd81e915 | 6802 | SV *nextPL_nextwhite = 0; |
5db06880 NC |
6803 | #endif |
6804 | ||
8990e307 LW |
6805 | |
6806 | /* Get the rest if it looks like a package qualifier */ | |
6807 | ||
155aba94 | 6808 | if (*s == '\'' || (*s == ':' && s[1] == ':')) { |
c3e0f903 | 6809 | STRLEN morelen; |
3280af22 | 6810 | s = scan_word(s, PL_tokenbuf + len, sizeof PL_tokenbuf - len, |
c3e0f903 GS |
6811 | TRUE, &morelen); |
6812 | if (!morelen) | |
86fe3f36 BF |
6813 | Perl_croak(aTHX_ "Bad name after %"SVf"%s", |
6814 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
6815 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP )), | |
ec2ab091 | 6816 | *s == '\'' ? "'" : "::"); |
c3e0f903 | 6817 | len += morelen; |
ce29ac45 | 6818 | pkgname = 1; |
a0d0e21e | 6819 | } |
8990e307 | 6820 | |
3280af22 NIS |
6821 | if (PL_expect == XOPERATOR) { |
6822 | if (PL_bufptr == PL_linestart) { | |
57843af0 | 6823 | CopLINE_dec(PL_curcop); |
f1f66076 | 6824 | Perl_warner(aTHX_ packWARN(WARN_SEMICOLON), "%s", PL_warn_nosemi); |
57843af0 | 6825 | CopLINE_inc(PL_curcop); |
463ee0b2 LW |
6826 | } |
6827 | else | |
54310121 | 6828 | no_op("Bareword",s); |
463ee0b2 | 6829 | } |
8990e307 | 6830 | |
c3e0f903 | 6831 | /* Look for a subroutine with this name in current package, |
73f3e228 FC |
6832 | unless this is a lexical sub, or name is "Foo::", |
6833 | in which case Foo is a bareword | |
c3e0f903 GS |
6834 | (and a package name). */ |
6835 | ||
5db06880 | 6836 | if (len > 2 && !PL_madskills && |
3280af22 | 6837 | PL_tokenbuf[len - 2] == ':' && PL_tokenbuf[len - 1] == ':') |
c3e0f903 | 6838 | { |
f776e3cd | 6839 | if (ckWARN(WARN_BAREWORD) |
af9f5953 | 6840 | && ! gv_fetchpvn_flags(PL_tokenbuf, len, UTF ? SVf_UTF8 : 0, SVt_PVHV)) |
9014280d | 6841 | Perl_warner(aTHX_ packWARN(WARN_BAREWORD), |
979a1401 BF |
6842 | "Bareword \"%"SVf"\" refers to nonexistent package", |
6843 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
6844 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP))); | |
c3e0f903 | 6845 | len -= 2; |
3280af22 | 6846 | PL_tokenbuf[len] = '\0'; |
a0714e2c | 6847 | gv = NULL; |
c3e0f903 GS |
6848 | gvp = 0; |
6849 | } | |
6850 | else { | |
73f3e228 | 6851 | if (!lex && !gv) { |
62d55b22 NC |
6852 | /* Mustn't actually add anything to a symbol table. |
6853 | But also don't want to "initialise" any placeholder | |
6854 | constants that might already be there into full | |
6855 | blown PVGVs with attached PVCV. */ | |
90e5519e | 6856 | gv = gv_fetchpvn_flags(PL_tokenbuf, len, |
af9f5953 BF |
6857 | GV_NOADD_NOINIT | ( UTF ? SVf_UTF8 : 0 ), |
6858 | SVt_PVCV); | |
62d55b22 | 6859 | } |
b3d904f3 | 6860 | len = 0; |
c3e0f903 GS |
6861 | } |
6862 | ||
6863 | /* if we saw a global override before, get the right name */ | |
8990e307 | 6864 | |
73f3e228 | 6865 | if (!sv) |
18f70389 | 6866 | sv = S_newSV_maybe_utf8(aTHX_ PL_tokenbuf, |
37bb7629 | 6867 | len ? len : strlen(PL_tokenbuf)); |
49dc05e3 | 6868 | if (gvp) { |
37bb7629 | 6869 | SV * const tmp_sv = sv; |
396482e1 | 6870 | sv = newSVpvs("CORE::GLOBAL::"); |
37bb7629 EB |
6871 | sv_catsv(sv, tmp_sv); |
6872 | SvREFCNT_dec(tmp_sv); | |
8a7a129d | 6873 | } |
37bb7629 | 6874 | |
5db06880 | 6875 | #ifdef PERL_MAD |
cd81e915 NC |
6876 | if (PL_madskills && !PL_thistoken) { |
6877 | char *start = SvPVX(PL_linestr) + PL_realtokenstart; | |
9ff8e806 | 6878 | PL_thistoken = newSVpvn(start,s - start); |
cd81e915 | 6879 | PL_realtokenstart = s - SvPVX(PL_linestr); |
5db06880 NC |
6880 | } |
6881 | #endif | |
8990e307 | 6882 | |
a0d0e21e | 6883 | /* Presume this is going to be a bareword of some sort. */ |
a0d0e21e | 6884 | CLINE; |
6154021b RGS |
6885 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sv); |
6886 | pl_yylval.opval->op_private = OPpCONST_BARE; | |
a0d0e21e | 6887 | |
c3e0f903 | 6888 | /* And if "Foo::", then that's what it certainly is. */ |
c3e0f903 GS |
6889 | if (len) |
6890 | goto safe_bareword; | |
6891 | ||
73f3e228 | 6892 | if (!off) |
f7461760 | 6893 | { |
d8ebba9f | 6894 | OP *const_op = newSVOP(OP_CONST, 0, SvREFCNT_inc_NN(sv)); |
f7461760 Z |
6895 | const_op->op_private = OPpCONST_BARE; |
6896 | rv2cv_op = newCVREF(0, const_op); | |
73f3e228 | 6897 | cv = lex ? GvCV(gv) : rv2cv_op_cv(rv2cv_op, 0); |
f7461760 | 6898 | } |
5069cc75 | 6899 | |
8990e307 LW |
6900 | /* See if it's the indirect object for a list operator. */ |
6901 | ||
3280af22 NIS |
6902 | if (PL_oldoldbufptr && |
6903 | PL_oldoldbufptr < PL_bufptr && | |
65cec589 GS |
6904 | (PL_oldoldbufptr == PL_last_lop |
6905 | || PL_oldoldbufptr == PL_last_uni) && | |
a0d0e21e | 6906 | /* NO SKIPSPACE BEFORE HERE! */ |
a9ef352a GS |
6907 | (PL_expect == XREF || |
6908 | ((PL_opargs[PL_last_lop_op] >> OASHIFT)& 7) == OA_FILEREF)) | |
a0d0e21e | 6909 | { |
748a9306 LW |
6910 | bool immediate_paren = *s == '('; |
6911 | ||
a0d0e21e | 6912 | /* (Now we can afford to cross potential line boundary.) */ |
cd81e915 | 6913 | s = SKIPSPACE2(s,nextPL_nextwhite); |
5db06880 | 6914 | #ifdef PERL_MAD |
cd81e915 | 6915 | PL_nextwhite = nextPL_nextwhite; /* assume no & deception */ |
5db06880 | 6916 | #endif |
a0d0e21e LW |
6917 | |
6918 | /* Two barewords in a row may indicate method call. */ | |
6919 | ||
62d55b22 | 6920 | if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') && |
f7461760 Z |
6921 | (tmp = intuit_method(s, gv, cv))) { |
6922 | op_free(rv2cv_op); | |
78cdf107 Z |
6923 | if (tmp == METHOD && !PL_lex_allbrackets && |
6924 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
6925 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 6926 | return REPORT(tmp); |
f7461760 | 6927 | } |
a0d0e21e LW |
6928 | |
6929 | /* If not a declared subroutine, it's an indirect object. */ | |
6930 | /* (But it's an indir obj regardless for sort.) */ | |
7294df96 | 6931 | /* Also, if "_" follows a filetest operator, it's a bareword */ |
a0d0e21e | 6932 | |
7294df96 RGS |
6933 | if ( |
6934 | ( !immediate_paren && (PL_last_lop_op == OP_SORT || | |
f7461760 | 6935 | (!cv && |
a9ef352a | 6936 | (PL_last_lop_op != OP_MAPSTART && |
f0670693 | 6937 | PL_last_lop_op != OP_GREPSTART)))) |
7294df96 RGS |
6938 | || (PL_tokenbuf[0] == '_' && PL_tokenbuf[1] == '\0' |
6939 | && ((PL_opargs[PL_last_lop_op] & OA_CLASS_MASK) == OA_FILESTATOP)) | |
6940 | ) | |
a9ef352a | 6941 | { |
3280af22 | 6942 | PL_expect = (PL_last_lop == PL_oldoldbufptr) ? XTERM : XOPERATOR; |
748a9306 | 6943 | goto bareword; |
93a17b20 LW |
6944 | } |
6945 | } | |
8990e307 | 6946 | |
3280af22 | 6947 | PL_expect = XOPERATOR; |
5db06880 NC |
6948 | #ifdef PERL_MAD |
6949 | if (isSPACE(*s)) | |
cd81e915 NC |
6950 | s = SKIPSPACE2(s,nextPL_nextwhite); |
6951 | PL_nextwhite = nextPL_nextwhite; | |
5db06880 | 6952 | #else |
8990e307 | 6953 | s = skipspace(s); |
5db06880 | 6954 | #endif |
1c3923b3 GS |
6955 | |
6956 | /* Is this a word before a => operator? */ | |
ce29ac45 | 6957 | if (*s == '=' && s[1] == '>' && !pkgname) { |
f7461760 | 6958 | op_free(rv2cv_op); |
1c3923b3 | 6959 | CLINE; |
6154021b | 6960 | sv_setpv(((SVOP*)pl_yylval.opval)->op_sv, PL_tokenbuf); |
0064a8a9 | 6961 | if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len)) |
6154021b | 6962 | SvUTF8_on(((SVOP*)pl_yylval.opval)->op_sv); |
1c3923b3 GS |
6963 | TERM(WORD); |
6964 | } | |
6965 | ||
6966 | /* If followed by a paren, it's certainly a subroutine. */ | |
93a17b20 | 6967 | if (*s == '(') { |
79072805 | 6968 | CLINE; |
5069cc75 | 6969 | if (cv) { |
c35e046a AL |
6970 | d = s + 1; |
6971 | while (SPACE_OR_TAB(*d)) | |
6972 | d++; | |
f7461760 | 6973 | if (*d == ')' && (sv = cv_const_sv(cv))) { |
96e4d5b1 | 6974 | s = d + 1; |
c631f32b | 6975 | goto its_constant; |
96e4d5b1 | 6976 | } |
6977 | } | |
5db06880 NC |
6978 | #ifdef PERL_MAD |
6979 | if (PL_madskills) { | |
cd81e915 NC |
6980 | PL_nextwhite = PL_thiswhite; |
6981 | PL_thiswhite = 0; | |
5db06880 | 6982 | } |
cd81e915 | 6983 | start_force(PL_curforce); |
5db06880 | 6984 | #endif |
73f3e228 FC |
6985 | NEXTVAL_NEXTTOKE.opval = |
6986 | off ? rv2cv_op : pl_yylval.opval; | |
3280af22 | 6987 | PL_expect = XOPERATOR; |
5db06880 NC |
6988 | #ifdef PERL_MAD |
6989 | if (PL_madskills) { | |
cd81e915 NC |
6990 | PL_nextwhite = nextPL_nextwhite; |
6991 | curmad('X', PL_thistoken); | |
6b29d1f5 | 6992 | PL_thistoken = newSVpvs(""); |
5db06880 NC |
6993 | } |
6994 | #endif | |
73f3e228 FC |
6995 | if (off) |
6996 | op_free(pl_yylval.opval), force_next(PRIVATEREF); | |
6997 | else op_free(rv2cv_op), force_next(WORD); | |
6154021b | 6998 | pl_yylval.ival = 0; |
463ee0b2 | 6999 | TOKEN('&'); |
79072805 | 7000 | } |
93a17b20 | 7001 | |
a0d0e21e | 7002 | /* If followed by var or block, call it a method (unless sub) */ |
8990e307 | 7003 | |
f7461760 Z |
7004 | if ((*s == '$' || *s == '{') && !cv) { |
7005 | op_free(rv2cv_op); | |
3280af22 NIS |
7006 | PL_last_lop = PL_oldbufptr; |
7007 | PL_last_lop_op = OP_METHOD; | |
78cdf107 Z |
7008 | if (!PL_lex_allbrackets && |
7009 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7010 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
93a17b20 | 7011 | PREBLOCK(METHOD); |
463ee0b2 LW |
7012 | } |
7013 | ||
8990e307 LW |
7014 | /* If followed by a bareword, see if it looks like indir obj. */ |
7015 | ||
30fe34ed RGS |
7016 | if (!orig_keyword |
7017 | && (isIDFIRST_lazy_if(s,UTF) || *s == '$') | |
f7461760 Z |
7018 | && (tmp = intuit_method(s, gv, cv))) { |
7019 | op_free(rv2cv_op); | |
78cdf107 Z |
7020 | if (tmp == METHOD && !PL_lex_allbrackets && |
7021 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7022 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
bbf60fe6 | 7023 | return REPORT(tmp); |
f7461760 | 7024 | } |
93a17b20 | 7025 | |
8990e307 LW |
7026 | /* Not a method, so call it a subroutine (if defined) */ |
7027 | ||
5069cc75 | 7028 | if (cv) { |
898c3bca | 7029 | if (lastchar == '-' && penultchar != '-') { |
43b5ab4c BF |
7030 | const SV *tmpsv = newSVpvn_flags( PL_tokenbuf, len ? len : strlen(PL_tokenbuf), (UTF ? SVf_UTF8 : 0) | SVs_TEMP ); |
7031 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
7032 | "Ambiguous use of -%"SVf" resolved as -&%"SVf"()", | |
7033 | SVfARG(tmpsv), SVfARG(tmpsv)); | |
7034 | } | |
89bfa8cd | 7035 | /* Check for a constant sub */ |
f7461760 | 7036 | if ((sv = cv_const_sv(cv))) { |
96e4d5b1 | 7037 | its_constant: |
f7461760 | 7038 | op_free(rv2cv_op); |
6154021b RGS |
7039 | SvREFCNT_dec(((SVOP*)pl_yylval.opval)->op_sv); |
7040 | ((SVOP*)pl_yylval.opval)->op_sv = SvREFCNT_inc_simple(sv); | |
cc2ebcd7 | 7041 | pl_yylval.opval->op_private = OPpCONST_FOLDED; |
6b7c6d95 | 7042 | pl_yylval.opval->op_flags |= OPf_SPECIAL; |
96e4d5b1 | 7043 | TOKEN(WORD); |
89bfa8cd | 7044 | } |
7045 | ||
6154021b | 7046 | op_free(pl_yylval.opval); |
f7461760 | 7047 | pl_yylval.opval = rv2cv_op; |
6154021b | 7048 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
7a52d87a | 7049 | PL_last_lop = PL_oldbufptr; |
bf848113 | 7050 | PL_last_lop_op = OP_ENTERSUB; |
4633a7c4 | 7051 | /* Is there a prototype? */ |
5db06880 NC |
7052 | if ( |
7053 | #ifdef PERL_MAD | |
7054 | cv && | |
7055 | #endif | |
d9f2850e RGS |
7056 | SvPOK(cv)) |
7057 | { | |
8fa6a409 FC |
7058 | STRLEN protolen = CvPROTOLEN(cv); |
7059 | const char *proto = CvPROTO(cv); | |
b5fb7ce3 | 7060 | bool optional; |
5f66b61c | 7061 | if (!protolen) |
4633a7c4 | 7062 | TERM(FUNC0SUB); |
b5fb7ce3 FC |
7063 | if ((optional = *proto == ';')) |
7064 | do | |
0f5d0394 | 7065 | proto++; |
b5fb7ce3 | 7066 | while (*proto == ';'); |
649d02de FC |
7067 | if ( |
7068 | ( | |
7069 | ( | |
7070 | *proto == '$' || *proto == '_' | |
c035a075 | 7071 | || *proto == '*' || *proto == '+' |
649d02de FC |
7072 | ) |
7073 | && proto[1] == '\0' | |
7074 | ) | |
7075 | || ( | |
7076 | *proto == '\\' && proto[1] && proto[2] == '\0' | |
7077 | ) | |
7078 | ) | |
b5fb7ce3 | 7079 | UNIPROTO(UNIOPSUB,optional); |
649d02de FC |
7080 | if (*proto == '\\' && proto[1] == '[') { |
7081 | const char *p = proto + 2; | |
7082 | while(*p && *p != ']') | |
7083 | ++p; | |
b5fb7ce3 FC |
7084 | if(*p == ']' && !p[1]) |
7085 | UNIPROTO(UNIOPSUB,optional); | |
649d02de | 7086 | } |
7a52d87a | 7087 | if (*proto == '&' && *s == '{') { |
49a54bbe NC |
7088 | if (PL_curstash) |
7089 | sv_setpvs(PL_subname, "__ANON__"); | |
7090 | else | |
7091 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
78cdf107 Z |
7092 | if (!PL_lex_allbrackets && |
7093 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7094 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
4633a7c4 LW |
7095 | PREBLOCK(LSTOPSUB); |
7096 | } | |
a9ef352a | 7097 | } |
5db06880 NC |
7098 | #ifdef PERL_MAD |
7099 | { | |
7100 | if (PL_madskills) { | |
cd81e915 NC |
7101 | PL_nextwhite = PL_thiswhite; |
7102 | PL_thiswhite = 0; | |
5db06880 | 7103 | } |
cd81e915 | 7104 | start_force(PL_curforce); |
6154021b | 7105 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 NC |
7106 | PL_expect = XTERM; |
7107 | if (PL_madskills) { | |
cd81e915 NC |
7108 | PL_nextwhite = nextPL_nextwhite; |
7109 | curmad('X', PL_thistoken); | |
6b29d1f5 | 7110 | PL_thistoken = newSVpvs(""); |
5db06880 | 7111 | } |
73f3e228 | 7112 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7113 | if (!PL_lex_allbrackets && |
7114 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7115 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
7116 | TOKEN(NOAMP); |
7117 | } | |
7118 | } | |
7119 | ||
7120 | /* Guess harder when madskills require "best effort". */ | |
7121 | if (PL_madskills && (!gv || !GvCVu(gv))) { | |
7122 | int probable_sub = 0; | |
7123 | if (strchr("\"'`$@%0123456789!*+{[<", *s)) | |
7124 | probable_sub = 1; | |
7125 | else if (isALPHA(*s)) { | |
7126 | char tmpbuf[1024]; | |
7127 | STRLEN tmplen; | |
7128 | d = s; | |
7129 | d = scan_word(d, tmpbuf, sizeof tmpbuf, TRUE, &tmplen); | |
5458a98a | 7130 | if (!keyword(tmpbuf, tmplen, 0)) |
5db06880 NC |
7131 | probable_sub = 1; |
7132 | else { | |
7133 | while (d < PL_bufend && isSPACE(*d)) | |
7134 | d++; | |
7135 | if (*d == '=' && d[1] == '>') | |
7136 | probable_sub = 1; | |
7137 | } | |
7138 | } | |
7139 | if (probable_sub) { | |
af9f5953 BF |
7140 | gv = gv_fetchpv(PL_tokenbuf, GV_ADD | ( UTF ? SVf_UTF8 : 0 ), |
7141 | SVt_PVCV); | |
6154021b | 7142 | op_free(pl_yylval.opval); |
f7461760 | 7143 | pl_yylval.opval = rv2cv_op; |
6154021b | 7144 | pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN; |
5db06880 NC |
7145 | PL_last_lop = PL_oldbufptr; |
7146 | PL_last_lop_op = OP_ENTERSUB; | |
cd81e915 NC |
7147 | PL_nextwhite = PL_thiswhite; |
7148 | PL_thiswhite = 0; | |
7149 | start_force(PL_curforce); | |
6154021b | 7150 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
5db06880 | 7151 | PL_expect = XTERM; |
cd81e915 NC |
7152 | PL_nextwhite = nextPL_nextwhite; |
7153 | curmad('X', PL_thistoken); | |
6b29d1f5 | 7154 | PL_thistoken = newSVpvs(""); |
73f3e228 | 7155 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7156 | if (!PL_lex_allbrackets && |
7157 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7158 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
5db06880 NC |
7159 | TOKEN(NOAMP); |
7160 | } | |
7161 | #else | |
6154021b | 7162 | NEXTVAL_NEXTTOKE.opval = pl_yylval.opval; |
3280af22 | 7163 | PL_expect = XTERM; |
73f3e228 | 7164 | force_next(off ? PRIVATEREF : WORD); |
78cdf107 Z |
7165 | if (!PL_lex_allbrackets && |
7166 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7167 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
8990e307 | 7168 | TOKEN(NOAMP); |
5db06880 | 7169 | #endif |
8990e307 | 7170 | } |
748a9306 | 7171 | |
8990e307 LW |
7172 | /* Call it a bare word */ |
7173 | ||
5603f27d | 7174 | if (PL_hints & HINT_STRICT_SUBS) |
6154021b | 7175 | pl_yylval.opval->op_private |= OPpCONST_STRICT; |
5603f27d | 7176 | else { |
9a073a1d RGS |
7177 | bareword: |
7178 | /* after "print" and similar functions (corresponding to | |
7179 | * "F? L" in opcode.pl), whatever wasn't already parsed as | |
7180 | * a filehandle should be subject to "strict subs". | |
7181 | * Likewise for the optional indirect-object argument to system | |
7182 | * or exec, which can't be a bareword */ | |
7183 | if ((PL_last_lop_op == OP_PRINT | |
7184 | || PL_last_lop_op == OP_PRTF | |
7185 | || PL_last_lop_op == OP_SAY | |
7186 | || PL_last_lop_op == OP_SYSTEM | |
7187 | || PL_last_lop_op == OP_EXEC) | |
7188 | && (PL_hints & HINT_STRICT_SUBS)) | |
7189 | pl_yylval.opval->op_private |= OPpCONST_STRICT; | |
041457d9 DM |
7190 | if (lastchar != '-') { |
7191 | if (ckWARN(WARN_RESERVED)) { | |
c35e046a AL |
7192 | d = PL_tokenbuf; |
7193 | while (isLOWER(*d)) | |
7194 | d++; | |
af9f5953 | 7195 | if (!*d && !gv_stashpv(PL_tokenbuf, UTF ? SVf_UTF8 : 0)) |
9014280d | 7196 | Perl_warner(aTHX_ packWARN(WARN_RESERVED), PL_warn_reserved, |
5603f27d GS |
7197 | PL_tokenbuf); |
7198 | } | |
748a9306 LW |
7199 | } |
7200 | } | |
f7461760 | 7201 | op_free(rv2cv_op); |
c3e0f903 GS |
7202 | |
7203 | safe_bareword: | |
9b387841 NC |
7204 | if ((lastchar == '*' || lastchar == '%' || lastchar == '&')) { |
7205 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), | |
02571fe8 BF |
7206 | "Operator or semicolon missing before %c%"SVf, |
7207 | lastchar, SVfARG(newSVpvn_flags(PL_tokenbuf, | |
7208 | strlen(PL_tokenbuf), | |
7209 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
9b387841 NC |
7210 | Perl_ck_warner_d(aTHX_ packWARN(WARN_AMBIGUOUS), |
7211 | "Ambiguous use of %c resolved as operator %c", | |
7212 | lastchar, lastchar); | |
748a9306 | 7213 | } |
93a17b20 | 7214 | TOKEN(WORD); |
79072805 | 7215 | } |
79072805 | 7216 | |
68dc0745 | 7217 | case KEY___FILE__: |
7eb971ee | 7218 | FUN0OP( |
14f0f125 | 7219 | (OP*)newSVOP(OP_CONST, 0, newSVpv(CopFILE(PL_curcop),0)) |
7eb971ee | 7220 | ); |
46fc3d4c | 7221 | |
79072805 | 7222 | case KEY___LINE__: |
7eb971ee FC |
7223 | FUN0OP( |
7224 | (OP*)newSVOP(OP_CONST, 0, | |
7225 | Perl_newSVpvf(aTHX_ "%"IVdf, (IV)CopLINE(PL_curcop))) | |
7226 | ); | |
68dc0745 | 7227 | |
7228 | case KEY___PACKAGE__: | |
7eb971ee FC |
7229 | FUN0OP( |
7230 | (OP*)newSVOP(OP_CONST, 0, | |
3280af22 | 7231 | (PL_curstash |
5aaec2b4 | 7232 | ? newSVhek(HvNAME_HEK(PL_curstash)) |
7eb971ee FC |
7233 | : &PL_sv_undef)) |
7234 | ); | |
79072805 | 7235 | |
e50aee73 | 7236 | case KEY___DATA__: |
79072805 LW |
7237 | case KEY___END__: { |
7238 | GV *gv; | |
3280af22 | 7239 | if (PL_rsfp && (!PL_in_eval || PL_tokenbuf[2] == 'D')) { |
bfed75c6 | 7240 | const char *pname = "main"; |
affc13fc FC |
7241 | STRLEN plen = 4; |
7242 | U32 putf8 = 0; | |
3280af22 | 7243 | if (PL_tokenbuf[2] == 'D') |
affc13fc FC |
7244 | { |
7245 | HV * const stash = | |
7246 | PL_curstash ? PL_curstash : PL_defstash; | |
7247 | pname = HvNAME_get(stash); | |
7248 | plen = HvNAMELEN (stash); | |
7249 | if(HvNAMEUTF8(stash)) putf8 = SVf_UTF8; | |
7250 | } | |
7251 | gv = gv_fetchpvn_flags( | |
7252 | Perl_form(aTHX_ "%*s::DATA", (int)plen, pname), | |
7253 | plen+6, GV_ADD|putf8, SVt_PVIO | |
7254 | ); | |
a5f75d66 | 7255 | GvMULTI_on(gv); |
79072805 | 7256 | if (!GvIO(gv)) |
a0d0e21e | 7257 | GvIOp(gv) = newIO(); |
3280af22 | 7258 | IoIFP(GvIOp(gv)) = PL_rsfp; |
a0d0e21e LW |
7259 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
7260 | { | |
f54cb97a | 7261 | const int fd = PerlIO_fileno(PL_rsfp); |
a0d0e21e LW |
7262 | fcntl(fd,F_SETFD,fd >= 3); |
7263 | } | |
79072805 | 7264 | #endif |
fd049845 | 7265 | /* Mark this internal pseudo-handle as clean */ |
7266 | IoFLAGS(GvIOp(gv)) |= IOf_UNTAINT; | |
4c84d7f2 | 7267 | if ((PerlIO*)PL_rsfp == PerlIO_stdin()) |
50952442 | 7268 | IoTYPE(GvIOp(gv)) = IoTYPE_STD; |
79072805 | 7269 | else |
50952442 | 7270 | IoTYPE(GvIOp(gv)) = IoTYPE_RDONLY; |
c39cd008 GS |
7271 | #if defined(WIN32) && !defined(PERL_TEXTMODE_SCRIPTS) |
7272 | /* if the script was opened in binmode, we need to revert | |
53129d29 | 7273 | * it to text mode for compatibility; but only iff it has CRs |
c39cd008 | 7274 | * XXX this is a questionable hack at best. */ |
53129d29 GS |
7275 | if (PL_bufend-PL_bufptr > 2 |
7276 | && PL_bufend[-1] == '\n' && PL_bufend[-2] == '\r') | |
c39cd008 GS |
7277 | { |
7278 | Off_t loc = 0; | |
50952442 | 7279 | if (IoTYPE(GvIOp(gv)) == IoTYPE_RDONLY) { |
c39cd008 GS |
7280 | loc = PerlIO_tell(PL_rsfp); |
7281 | (void)PerlIO_seek(PL_rsfp, 0L, 0); | |
7282 | } | |
2986a63f JH |
7283 | #ifdef NETWARE |
7284 | if (PerlLIO_setmode(PL_rsfp, O_TEXT) != -1) { | |
7285 | #else | |
c39cd008 | 7286 | if (PerlLIO_setmode(PerlIO_fileno(PL_rsfp), O_TEXT) != -1) { |
2986a63f | 7287 | #endif /* NETWARE */ |
c39cd008 GS |
7288 | if (loc > 0) |
7289 | PerlIO_seek(PL_rsfp, loc, 0); | |
7290 | } | |
7291 | } | |
7292 | #endif | |
7948272d | 7293 | #ifdef PERLIO_LAYERS |
52d2e0f4 JH |
7294 | if (!IN_BYTES) { |
7295 | if (UTF) | |
7296 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, ":utf8"); | |
7297 | else if (PL_encoding) { | |
7298 | SV *name; | |
7299 | dSP; | |
7300 | ENTER; | |
7301 | SAVETMPS; | |
7302 | PUSHMARK(sp); | |
7303 | EXTEND(SP, 1); | |
7304 | XPUSHs(PL_encoding); | |
7305 | PUTBACK; | |
7306 | call_method("name", G_SCALAR); | |
7307 | SPAGAIN; | |
7308 | name = POPs; | |
7309 | PUTBACK; | |
bfed75c6 | 7310 | PerlIO_apply_layers(aTHX_ PL_rsfp, NULL, |
52d2e0f4 | 7311 | Perl_form(aTHX_ ":encoding(%"SVf")", |
be2597df | 7312 | SVfARG(name))); |
52d2e0f4 JH |
7313 | FREETMPS; |
7314 | LEAVE; | |
7315 | } | |
7316 | } | |
7948272d | 7317 | #endif |
5db06880 NC |
7318 | #ifdef PERL_MAD |
7319 | if (PL_madskills) { | |
cd81e915 NC |
7320 | if (PL_realtokenstart >= 0) { |
7321 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; | |
7322 | if (!PL_endwhite) | |
6b29d1f5 | 7323 | PL_endwhite = newSVpvs(""); |
cd81e915 NC |
7324 | sv_catsv(PL_endwhite, PL_thiswhite); |
7325 | PL_thiswhite = 0; | |
7326 | sv_catpvn(PL_endwhite, tstart, PL_bufend - tstart); | |
7327 | PL_realtokenstart = -1; | |
5db06880 | 7328 | } |
5cc814fd NC |
7329 | while ((s = filter_gets(PL_endwhite, SvCUR(PL_endwhite))) |
7330 | != NULL) ; | |
5db06880 NC |
7331 | } |
7332 | #endif | |
4608196e | 7333 | PL_rsfp = NULL; |
79072805 LW |
7334 | } |
7335 | goto fake_eof; | |
e929a76b | 7336 | } |
de3bb511 | 7337 | |
84ed0108 | 7338 | case KEY___SUB__: |
1a35f9ff | 7339 | FUN0OP(newPVOP(OP_RUNCV,0,NULL)); |
84ed0108 | 7340 | |
8990e307 | 7341 | case KEY_AUTOLOAD: |
ed6116ce | 7342 | case KEY_DESTROY: |
79072805 | 7343 | case KEY_BEGIN: |
3c10abe3 | 7344 | case KEY_UNITCHECK: |
7d30b5c4 | 7345 | case KEY_CHECK: |
7d07dbc2 | 7346 | case KEY_INIT: |
7d30b5c4 | 7347 | case KEY_END: |
3280af22 NIS |
7348 | if (PL_expect == XSTATE) { |
7349 | s = PL_bufptr; | |
93a17b20 | 7350 | goto really_sub; |
79072805 LW |
7351 | } |
7352 | goto just_a_word; | |
7353 | ||
a0d0e21e LW |
7354 | case KEY_CORE: |
7355 | if (*s == ':' && s[1] == ':') { | |
ee36fb64 | 7356 | STRLEN olen = len; |
748a9306 | 7357 | d = s; |
ee36fb64 | 7358 | s += 2; |
3280af22 | 7359 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len); |
ee36fb64 FC |
7360 | if ((*s == ':' && s[1] == ':') |
7361 | || (!(tmp = keyword(PL_tokenbuf, len, 1)) && *s == '\'')) | |
7362 | { | |
7363 | s = d; | |
7364 | len = olen; | |
7365 | Copy(PL_bufptr, PL_tokenbuf, olen, char); | |
7366 | goto just_a_word; | |
7367 | } | |
7368 | if (!tmp) | |
3773592b BF |
7369 | Perl_croak(aTHX_ "CORE::%"SVf" is not a keyword", |
7370 | SVfARG(newSVpvn_flags(PL_tokenbuf, len, | |
7371 | (UTF ? SVf_UTF8 : 0) | SVs_TEMP))); | |
a0d0e21e LW |
7372 | if (tmp < 0) |
7373 | tmp = -tmp; | |
d67594ff FC |
7374 | else if (tmp == KEY_require || tmp == KEY_do |
7375 | || tmp == KEY_glob) | |
a72a1c8b | 7376 | /* that's a way to remember we saw "CORE::" */ |
850e8516 | 7377 | orig_keyword = tmp; |
a0d0e21e LW |
7378 | goto reserved_word; |
7379 | } | |
7380 | goto just_a_word; | |
7381 | ||
463ee0b2 LW |
7382 | case KEY_abs: |
7383 | UNI(OP_ABS); | |
7384 | ||
79072805 LW |
7385 | case KEY_alarm: |
7386 | UNI(OP_ALARM); | |
7387 | ||
7388 | case KEY_accept: | |
a0d0e21e | 7389 | LOP(OP_ACCEPT,XTERM); |
79072805 | 7390 | |
463ee0b2 | 7391 | case KEY_and: |
78cdf107 Z |
7392 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
7393 | return REPORT(0); | |
463ee0b2 LW |
7394 | OPERATOR(ANDOP); |
7395 | ||
79072805 | 7396 | case KEY_atan2: |
a0d0e21e | 7397 | LOP(OP_ATAN2,XTERM); |
85e6fe83 | 7398 | |
79072805 | 7399 | case KEY_bind: |
a0d0e21e | 7400 | LOP(OP_BIND,XTERM); |
79072805 LW |
7401 | |
7402 | case KEY_binmode: | |
1c1fc3ea | 7403 | LOP(OP_BINMODE,XTERM); |
79072805 LW |
7404 | |
7405 | case KEY_bless: | |
a0d0e21e | 7406 | LOP(OP_BLESS,XTERM); |
79072805 | 7407 | |
0d863452 RH |
7408 | case KEY_break: |
7409 | FUN0(OP_BREAK); | |
7410 | ||
79072805 LW |
7411 | case KEY_chop: |
7412 | UNI(OP_CHOP); | |
7413 | ||
7414 | case KEY_continue: | |
0d863452 RH |
7415 | /* We have to disambiguate the two senses of |
7416 | "continue". If the next token is a '{' then | |
7417 | treat it as the start of a continue block; | |
7418 | otherwise treat it as a control operator. | |
7419 | */ | |
7420 | s = skipspace(s); | |
7421 | if (*s == '{') | |
79072805 | 7422 | PREBLOCK(CONTINUE); |
0d863452 RH |
7423 | else |
7424 | FUN0(OP_CONTINUE); | |
79072805 LW |
7425 | |
7426 | case KEY_chdir: | |
fafc274c NC |
7427 | /* may use HOME */ |
7428 | (void)gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV); | |
79072805 LW |
7429 | UNI(OP_CHDIR); |
7430 | ||
7431 | case KEY_close: | |
7432 | UNI(OP_CLOSE); | |
7433 | ||
7434 | case KEY_closedir: | |
7435 | UNI(OP_CLOSEDIR); | |
7436 | ||
7437 | case KEY_cmp: | |
78cdf107 Z |
7438 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7439 | return REPORT(0); | |
79072805 LW |
7440 | Eop(OP_SCMP); |
7441 | ||
7442 | case KEY_caller: | |
7443 | UNI(OP_CALLER); | |
7444 | ||
7445 | case KEY_crypt: | |
7446 | #ifdef FCRYPT | |
f4c556ac GS |
7447 | if (!PL_cryptseen) { |
7448 | PL_cryptseen = TRUE; | |
de3bb511 | 7449 | init_des(); |
f4c556ac | 7450 | } |
a687059c | 7451 | #endif |
a0d0e21e | 7452 | LOP(OP_CRYPT,XTERM); |
79072805 LW |
7453 | |
7454 | case KEY_chmod: | |
a0d0e21e | 7455 | LOP(OP_CHMOD,XTERM); |
79072805 LW |
7456 | |
7457 | case KEY_chown: | |
a0d0e21e | 7458 | LOP(OP_CHOWN,XTERM); |
79072805 LW |
7459 | |
7460 | case KEY_connect: | |
a0d0e21e | 7461 | LOP(OP_CONNECT,XTERM); |
79072805 | 7462 | |
463ee0b2 LW |
7463 | case KEY_chr: |
7464 | UNI(OP_CHR); | |
7465 | ||
79072805 LW |
7466 | case KEY_cos: |
7467 | UNI(OP_COS); | |
7468 | ||
7469 | case KEY_chroot: | |
7470 | UNI(OP_CHROOT); | |
7471 | ||
0d863452 RH |
7472 | case KEY_default: |
7473 | PREBLOCK(DEFAULT); | |
7474 | ||
79072805 | 7475 | case KEY_do: |
29595ff2 | 7476 | s = SKIPSPACE1(s); |
79072805 | 7477 | if (*s == '{') |
a0d0e21e | 7478 | PRETERMBLOCK(DO); |
c2900bb8 | 7479 | if (*s != '\'') { |
4b473a5a FC |
7480 | *PL_tokenbuf = '&'; |
7481 | d = scan_word(s, PL_tokenbuf + 1, sizeof PL_tokenbuf - 1, | |
7482 | 1, &len); | |
7483 | if (len && !keyword(PL_tokenbuf + 1, len, 0)) { | |
c2900bb8 | 7484 | d = SKIPSPACE1(d); |
4b473a5a | 7485 | if (*d == '(') { |
60ac52eb | 7486 | force_ident_maybe_lex('&'); |
4b473a5a FC |
7487 | s = d; |
7488 | } | |
c2900bb8 FC |
7489 | } |
7490 | } | |
850e8516 RGS |
7491 | if (orig_keyword == KEY_do) { |
7492 | orig_keyword = 0; | |
6154021b | 7493 | pl_yylval.ival = 1; |
850e8516 RGS |
7494 | } |
7495 | else | |
6154021b | 7496 | pl_yylval.ival = 0; |
378cc40b | 7497 | OPERATOR(DO); |
79072805 LW |
7498 | |
7499 | case KEY_die: | |
3280af22 | 7500 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 7501 | LOP(OP_DIE,XTERM); |
79072805 LW |
7502 | |
7503 | case KEY_defined: | |
7504 | UNI(OP_DEFINED); | |
7505 | ||
7506 | case KEY_delete: | |
a0d0e21e | 7507 | UNI(OP_DELETE); |
79072805 LW |
7508 | |
7509 | case KEY_dbmopen: | |
74e8ce34 NC |
7510 | Perl_populate_isa(aTHX_ STR_WITH_LEN("AnyDBM_File::ISA"), |
7511 | STR_WITH_LEN("NDBM_File::"), | |
7512 | STR_WITH_LEN("DB_File::"), | |
7513 | STR_WITH_LEN("GDBM_File::"), | |
7514 | STR_WITH_LEN("SDBM_File::"), | |
7515 | STR_WITH_LEN("ODBM_File::"), | |
7516 | NULL); | |
a0d0e21e | 7517 | LOP(OP_DBMOPEN,XTERM); |
79072805 LW |
7518 | |
7519 | case KEY_dbmclose: | |
7520 | UNI(OP_DBMCLOSE); | |
7521 | ||
7522 | case KEY_dump: | |
c31f6d3b | 7523 | PL_expect = XOPERATOR; |
a0d0e21e | 7524 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7525 | LOOPX(OP_DUMP); |
7526 | ||
7527 | case KEY_else: | |
7528 | PREBLOCK(ELSE); | |
7529 | ||
7530 | case KEY_elsif: | |
6154021b | 7531 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7532 | OPERATOR(ELSIF); |
7533 | ||
7534 | case KEY_eq: | |
78cdf107 Z |
7535 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7536 | return REPORT(0); | |
79072805 LW |
7537 | Eop(OP_SEQ); |
7538 | ||
a0d0e21e LW |
7539 | case KEY_exists: |
7540 | UNI(OP_EXISTS); | |
4e553d73 | 7541 | |
79072805 | 7542 | case KEY_exit: |
5db06880 NC |
7543 | if (PL_madskills) |
7544 | UNI(OP_INT); | |
79072805 LW |
7545 | UNI(OP_EXIT); |
7546 | ||
7547 | case KEY_eval: | |
29595ff2 | 7548 | s = SKIPSPACE1(s); |
32e2a35d RGS |
7549 | if (*s == '{') { /* block eval */ |
7550 | PL_expect = XTERMBLOCK; | |
7551 | UNIBRACK(OP_ENTERTRY); | |
7552 | } | |
7553 | else { /* string eval */ | |
7554 | PL_expect = XTERM; | |
7555 | UNIBRACK(OP_ENTEREVAL); | |
7556 | } | |
79072805 | 7557 | |
7d789282 FC |
7558 | case KEY_evalbytes: |
7559 | PL_expect = XTERM; | |
7560 | UNIBRACK(-OP_ENTEREVAL); | |
7561 | ||
79072805 LW |
7562 | case KEY_eof: |
7563 | UNI(OP_EOF); | |
7564 | ||
7565 | case KEY_exp: | |
7566 | UNI(OP_EXP); | |
7567 | ||
7568 | case KEY_each: | |
7569 | UNI(OP_EACH); | |
7570 | ||
7571 | case KEY_exec: | |
a0d0e21e | 7572 | LOP(OP_EXEC,XREF); |
79072805 LW |
7573 | |
7574 | case KEY_endhostent: | |
7575 | FUN0(OP_EHOSTENT); | |
7576 | ||
7577 | case KEY_endnetent: | |
7578 | FUN0(OP_ENETENT); | |
7579 | ||
7580 | case KEY_endservent: | |
7581 | FUN0(OP_ESERVENT); | |
7582 | ||
7583 | case KEY_endprotoent: | |
7584 | FUN0(OP_EPROTOENT); | |
7585 | ||
7586 | case KEY_endpwent: | |
7587 | FUN0(OP_EPWENT); | |
7588 | ||
7589 | case KEY_endgrent: | |
7590 | FUN0(OP_EGRENT); | |
7591 | ||
7592 | case KEY_for: | |
7593 | case KEY_foreach: | |
78cdf107 Z |
7594 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7595 | return REPORT(0); | |
6154021b | 7596 | pl_yylval.ival = CopLINE(PL_curcop); |
29595ff2 | 7597 | s = SKIPSPACE1(s); |
7e2040f0 | 7598 | if (PL_expect == XSTATE && isIDFIRST_lazy_if(s,UTF)) { |
55497cff | 7599 | char *p = s; |
5db06880 NC |
7600 | #ifdef PERL_MAD |
7601 | int soff = s - SvPVX(PL_linestr); /* for skipspace realloc */ | |
7602 | #endif | |
7603 | ||
3280af22 | 7604 | if ((PL_bufend - p) >= 3 && |
55497cff | 7605 | strnEQ(p, "my", 2) && isSPACE(*(p + 2))) |
7606 | p += 2; | |
77ca0c92 LW |
7607 | else if ((PL_bufend - p) >= 4 && |
7608 | strnEQ(p, "our", 3) && isSPACE(*(p + 3))) | |
7609 | p += 3; | |
29595ff2 | 7610 | p = PEEKSPACE(p); |
7e2040f0 | 7611 | if (isIDFIRST_lazy_if(p,UTF)) { |
77ca0c92 LW |
7612 | p = scan_ident(p, PL_bufend, |
7613 | PL_tokenbuf, sizeof PL_tokenbuf, TRUE); | |
29595ff2 | 7614 | p = PEEKSPACE(p); |
77ca0c92 LW |
7615 | } |
7616 | if (*p != '$') | |
cea2e8a9 | 7617 | Perl_croak(aTHX_ "Missing $ on loop variable"); |
5db06880 NC |
7618 | #ifdef PERL_MAD |
7619 | s = SvPVX(PL_linestr) + soff; | |
7620 | #endif | |
55497cff | 7621 | } |
79072805 LW |
7622 | OPERATOR(FOR); |
7623 | ||
7624 | case KEY_formline: | |
a0d0e21e | 7625 | LOP(OP_FORMLINE,XTERM); |
79072805 LW |
7626 | |
7627 | case KEY_fork: | |
7628 | FUN0(OP_FORK); | |
7629 | ||
838f2281 BF |
7630 | case KEY_fc: |
7631 | UNI(OP_FC); | |
7632 | ||
79072805 | 7633 | case KEY_fcntl: |
a0d0e21e | 7634 | LOP(OP_FCNTL,XTERM); |
79072805 LW |
7635 | |
7636 | case KEY_fileno: | |
7637 | UNI(OP_FILENO); | |
7638 | ||
7639 | case KEY_flock: | |
a0d0e21e | 7640 | LOP(OP_FLOCK,XTERM); |
79072805 LW |
7641 | |
7642 | case KEY_gt: | |
78cdf107 Z |
7643 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7644 | return REPORT(0); | |
79072805 LW |
7645 | Rop(OP_SGT); |
7646 | ||
7647 | case KEY_ge: | |
78cdf107 Z |
7648 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7649 | return REPORT(0); | |
79072805 LW |
7650 | Rop(OP_SGE); |
7651 | ||
7652 | case KEY_grep: | |
2c38e13d | 7653 | LOP(OP_GREPSTART, XREF); |
79072805 LW |
7654 | |
7655 | case KEY_goto: | |
c31f6d3b | 7656 | PL_expect = XOPERATOR; |
a0d0e21e | 7657 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7658 | LOOPX(OP_GOTO); |
7659 | ||
7660 | case KEY_gmtime: | |
7661 | UNI(OP_GMTIME); | |
7662 | ||
7663 | case KEY_getc: | |
6f33ba73 | 7664 | UNIDOR(OP_GETC); |
79072805 LW |
7665 | |
7666 | case KEY_getppid: | |
7667 | FUN0(OP_GETPPID); | |
7668 | ||
7669 | case KEY_getpgrp: | |
7670 | UNI(OP_GETPGRP); | |
7671 | ||
7672 | case KEY_getpriority: | |
a0d0e21e | 7673 | LOP(OP_GETPRIORITY,XTERM); |
79072805 LW |
7674 | |
7675 | case KEY_getprotobyname: | |
7676 | UNI(OP_GPBYNAME); | |
7677 | ||
7678 | case KEY_getprotobynumber: | |
a0d0e21e | 7679 | LOP(OP_GPBYNUMBER,XTERM); |
79072805 LW |
7680 | |
7681 | case KEY_getprotoent: | |
7682 | FUN0(OP_GPROTOENT); | |
7683 | ||
7684 | case KEY_getpwent: | |
7685 | FUN0(OP_GPWENT); | |
7686 | ||
7687 | case KEY_getpwnam: | |
ff68c719 | 7688 | UNI(OP_GPWNAM); |
79072805 LW |
7689 | |
7690 | case KEY_getpwuid: | |
ff68c719 | 7691 | UNI(OP_GPWUID); |
79072805 LW |
7692 | |
7693 | case KEY_getpeername: | |
7694 | UNI(OP_GETPEERNAME); | |
7695 | ||
7696 | case KEY_gethostbyname: | |
7697 | UNI(OP_GHBYNAME); | |
7698 | ||
7699 | case KEY_gethostbyaddr: | |
a0d0e21e | 7700 | LOP(OP_GHBYADDR,XTERM); |
79072805 LW |
7701 | |
7702 | case KEY_gethostent: | |
7703 | FUN0(OP_GHOSTENT); | |
7704 | ||
7705 | case KEY_getnetbyname: | |
7706 | UNI(OP_GNBYNAME); | |
7707 | ||
7708 | case KEY_getnetbyaddr: | |
a0d0e21e | 7709 | LOP(OP_GNBYADDR,XTERM); |
79072805 LW |
7710 | |
7711 | case KEY_getnetent: | |
7712 | FUN0(OP_GNETENT); | |
7713 | ||
7714 | case KEY_getservbyname: | |
a0d0e21e | 7715 | LOP(OP_GSBYNAME,XTERM); |
79072805 LW |
7716 | |
7717 | case KEY_getservbyport: | |
a0d0e21e | 7718 | LOP(OP_GSBYPORT,XTERM); |
79072805 LW |
7719 | |
7720 | case KEY_getservent: | |
7721 | FUN0(OP_GSERVENT); | |
7722 | ||
7723 | case KEY_getsockname: | |
7724 | UNI(OP_GETSOCKNAME); | |
7725 | ||
7726 | case KEY_getsockopt: | |
a0d0e21e | 7727 | LOP(OP_GSOCKOPT,XTERM); |
79072805 LW |
7728 | |
7729 | case KEY_getgrent: | |
7730 | FUN0(OP_GGRENT); | |
7731 | ||
7732 | case KEY_getgrnam: | |
ff68c719 | 7733 | UNI(OP_GGRNAM); |
79072805 LW |
7734 | |
7735 | case KEY_getgrgid: | |
ff68c719 | 7736 | UNI(OP_GGRGID); |
79072805 LW |
7737 | |
7738 | case KEY_getlogin: | |
7739 | FUN0(OP_GETLOGIN); | |
7740 | ||
0d863452 | 7741 | case KEY_given: |
6154021b | 7742 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
7743 | OPERATOR(GIVEN); |
7744 | ||
93a17b20 | 7745 | case KEY_glob: |
d67594ff FC |
7746 | LOP( |
7747 | orig_keyword==KEY_glob ? (orig_keyword=0, -OP_GLOB) : OP_GLOB, | |
7748 | XTERM | |
7749 | ); | |
93a17b20 | 7750 | |
79072805 LW |
7751 | case KEY_hex: |
7752 | UNI(OP_HEX); | |
7753 | ||
7754 | case KEY_if: | |
78cdf107 Z |
7755 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
7756 | return REPORT(0); | |
6154021b | 7757 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
7758 | OPERATOR(IF); |
7759 | ||
7760 | case KEY_index: | |
a0d0e21e | 7761 | LOP(OP_INDEX,XTERM); |
79072805 LW |
7762 | |
7763 | case KEY_int: | |
7764 | UNI(OP_INT); | |
7765 | ||
7766 | case KEY_ioctl: | |
a0d0e21e | 7767 | LOP(OP_IOCTL,XTERM); |
79072805 LW |
7768 | |
7769 | case KEY_join: | |
a0d0e21e | 7770 | LOP(OP_JOIN,XTERM); |
79072805 LW |
7771 | |
7772 | case KEY_keys: | |
7773 | UNI(OP_KEYS); | |
7774 | ||
7775 | case KEY_kill: | |
a0d0e21e | 7776 | LOP(OP_KILL,XTERM); |
79072805 LW |
7777 | |
7778 | case KEY_last: | |
c31f6d3b | 7779 | PL_expect = XOPERATOR; |
a0d0e21e | 7780 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 | 7781 | LOOPX(OP_LAST); |
4e553d73 | 7782 | |
79072805 LW |
7783 | case KEY_lc: |
7784 | UNI(OP_LC); | |
7785 | ||
7786 | case KEY_lcfirst: | |
7787 | UNI(OP_LCFIRST); | |
7788 | ||
7789 | case KEY_local: | |
6154021b | 7790 | pl_yylval.ival = 0; |
79072805 LW |
7791 | OPERATOR(LOCAL); |
7792 | ||
7793 | case KEY_length: | |
7794 | UNI(OP_LENGTH); | |
7795 | ||
7796 | case KEY_lt: | |
78cdf107 Z |
7797 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7798 | return REPORT(0); | |
79072805 LW |
7799 | Rop(OP_SLT); |
7800 | ||
7801 | case KEY_le: | |
78cdf107 Z |
7802 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7803 | return REPORT(0); | |
79072805 LW |
7804 | Rop(OP_SLE); |
7805 | ||
7806 | case KEY_localtime: | |
7807 | UNI(OP_LOCALTIME); | |
7808 | ||
7809 | case KEY_log: | |
7810 | UNI(OP_LOG); | |
7811 | ||
7812 | case KEY_link: | |
a0d0e21e | 7813 | LOP(OP_LINK,XTERM); |
79072805 LW |
7814 | |
7815 | case KEY_listen: | |
a0d0e21e | 7816 | LOP(OP_LISTEN,XTERM); |
79072805 | 7817 | |
c0329465 MB |
7818 | case KEY_lock: |
7819 | UNI(OP_LOCK); | |
7820 | ||
79072805 LW |
7821 | case KEY_lstat: |
7822 | UNI(OP_LSTAT); | |
7823 | ||
7824 | case KEY_m: | |
8782bef2 | 7825 | s = scan_pat(s,OP_MATCH); |
79072805 LW |
7826 | TERM(sublex_start()); |
7827 | ||
a0d0e21e | 7828 | case KEY_map: |
2c38e13d | 7829 | LOP(OP_MAPSTART, XREF); |
4e4e412b | 7830 | |
79072805 | 7831 | case KEY_mkdir: |
a0d0e21e | 7832 | LOP(OP_MKDIR,XTERM); |
79072805 LW |
7833 | |
7834 | case KEY_msgctl: | |
a0d0e21e | 7835 | LOP(OP_MSGCTL,XTERM); |
79072805 LW |
7836 | |
7837 | case KEY_msgget: | |
a0d0e21e | 7838 | LOP(OP_MSGGET,XTERM); |
79072805 LW |
7839 | |
7840 | case KEY_msgrcv: | |
a0d0e21e | 7841 | LOP(OP_MSGRCV,XTERM); |
79072805 LW |
7842 | |
7843 | case KEY_msgsnd: | |
a0d0e21e | 7844 | LOP(OP_MSGSND,XTERM); |
79072805 | 7845 | |
77ca0c92 | 7846 | case KEY_our: |
93a17b20 | 7847 | case KEY_my: |
952306ac | 7848 | case KEY_state: |
eac04b2e | 7849 | PL_in_my = (U16)tmp; |
29595ff2 | 7850 | s = SKIPSPACE1(s); |
7e2040f0 | 7851 | if (isIDFIRST_lazy_if(s,UTF)) { |
5db06880 NC |
7852 | #ifdef PERL_MAD |
7853 | char* start = s; | |
7854 | #endif | |
3280af22 | 7855 | s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, TRUE, &len); |
09bef843 | 7856 | if (len == 3 && strnEQ(PL_tokenbuf, "sub", 3)) |
e7d0b801 FC |
7857 | { |
7858 | if (!FEATURE_LEXSUBS_IS_ENABLED) | |
7859 | Perl_croak(aTHX_ | |
7860 | "Experimental \"%s\" subs not enabled", | |
7861 | tmp == KEY_my ? "my" : | |
7862 | tmp == KEY_state ? "state" : "our"); | |
09bef843 | 7863 | goto really_sub; |
e7d0b801 | 7864 | } |
def3634b | 7865 | PL_in_my_stash = find_in_my_stash(PL_tokenbuf, len); |
3280af22 | 7866 | if (!PL_in_my_stash) { |
c750a3ec | 7867 | char tmpbuf[1024]; |
3280af22 | 7868 | PL_bufptr = s; |
d9fad198 | 7869 | my_snprintf(tmpbuf, sizeof(tmpbuf), "No such class %.1000s", PL_tokenbuf); |
3c54b17a | 7870 | yyerror_pv(tmpbuf, UTF ? SVf_UTF8 : 0); |
c750a3ec | 7871 | } |
5db06880 NC |
7872 | #ifdef PERL_MAD |
7873 | if (PL_madskills) { /* just add type to declarator token */ | |
cd81e915 NC |
7874 | sv_catsv(PL_thistoken, PL_nextwhite); |
7875 | PL_nextwhite = 0; | |
7876 | sv_catpvn(PL_thistoken, start, s - start); | |
5db06880 NC |
7877 | } |
7878 | #endif | |
c750a3ec | 7879 | } |
6154021b | 7880 | pl_yylval.ival = 1; |
55497cff | 7881 | OPERATOR(MY); |
93a17b20 | 7882 | |
79072805 | 7883 | case KEY_next: |
c31f6d3b | 7884 | PL_expect = XOPERATOR; |
a0d0e21e | 7885 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
7886 | LOOPX(OP_NEXT); |
7887 | ||
7888 | case KEY_ne: | |
78cdf107 Z |
7889 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_COMPARE) |
7890 | return REPORT(0); | |
79072805 LW |
7891 | Eop(OP_SNE); |
7892 | ||
a0d0e21e | 7893 | case KEY_no: |
468aa647 | 7894 | s = tokenize_use(0, s); |
52d0e95b | 7895 | TERM(USE); |
a0d0e21e LW |
7896 | |
7897 | case KEY_not: | |
29595ff2 | 7898 | if (*s == '(' || (s = SKIPSPACE1(s), *s == '(')) |
2d2e263d | 7899 | FUN1(OP_NOT); |
78cdf107 Z |
7900 | else { |
7901 | if (!PL_lex_allbrackets && | |
7902 | PL_lex_fakeeof > LEX_FAKEEOF_LOWLOGIC) | |
7903 | PL_lex_fakeeof = LEX_FAKEEOF_LOWLOGIC; | |
2d2e263d | 7904 | OPERATOR(NOTOP); |
78cdf107 | 7905 | } |
a0d0e21e | 7906 | |
79072805 | 7907 | case KEY_open: |
29595ff2 | 7908 | s = SKIPSPACE1(s); |
7e2040f0 | 7909 | if (isIDFIRST_lazy_if(s,UTF)) { |
f54cb97a | 7910 | const char *t; |
71aa9713 BF |
7911 | for (d = s; isALNUM_lazy_if(d,UTF);) { |
7912 | d += UTF ? UTF8SKIP(d) : 1; | |
7913 | if (UTF) { | |
7914 | while (UTF8_IS_CONTINUED(*d) && is_utf8_mark((U8*)d)) { | |
7915 | d += UTF ? UTF8SKIP(d) : 1; | |
7916 | } | |
7917 | } | |
7918 | } | |
c35e046a AL |
7919 | for (t=d; isSPACE(*t);) |
7920 | t++; | |
e2ab214b | 7921 | if ( *t && strchr("|&*+-=!?:.", *t) && ckWARN_d(WARN_PRECEDENCE) |
66fbe8fb HS |
7922 | /* [perl #16184] */ |
7923 | && !(t[0] == '=' && t[1] == '>') | |
db3abe52 | 7924 | && !(t[0] == ':' && t[1] == ':') |
240d1b6f | 7925 | && !keyword(s, d-s, 0) |
66fbe8fb | 7926 | ) { |
71aa9713 BF |
7927 | SV *tmpsv = newSVpvn_flags(s, (STRLEN)(d-s), |
7928 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)); | |
9014280d | 7929 | Perl_warner(aTHX_ packWARN(WARN_PRECEDENCE), |
71aa9713 BF |
7930 | "Precedence problem: open %"SVf" should be open(%"SVf")", |
7931 | SVfARG(tmpsv), SVfARG(tmpsv)); | |
66fbe8fb | 7932 | } |
93a17b20 | 7933 | } |
a0d0e21e | 7934 | LOP(OP_OPEN,XTERM); |
79072805 | 7935 | |
463ee0b2 | 7936 | case KEY_or: |
78cdf107 Z |
7937 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
7938 | return REPORT(0); | |
6154021b | 7939 | pl_yylval.ival = OP_OR; |
463ee0b2 LW |
7940 | OPERATOR(OROP); |
7941 | ||
79072805 LW |
7942 | case KEY_ord: |
7943 | UNI(OP_ORD); | |
7944 | ||
7945 | case KEY_oct: | |
7946 | UNI(OP_OCT); | |
7947 | ||
7948 | case KEY_opendir: | |
a0d0e21e | 7949 | LOP(OP_OPEN_DIR,XTERM); |
79072805 LW |
7950 | |
7951 | case KEY_print: | |
3280af22 | 7952 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 7953 | LOP(OP_PRINT,XREF); |
79072805 LW |
7954 | |
7955 | case KEY_printf: | |
3280af22 | 7956 | checkcomma(s,PL_tokenbuf,"filehandle"); |
a0d0e21e | 7957 | LOP(OP_PRTF,XREF); |
79072805 | 7958 | |
c07a80fd | 7959 | case KEY_prototype: |
7960 | UNI(OP_PROTOTYPE); | |
7961 | ||
79072805 | 7962 | case KEY_push: |
a0d0e21e | 7963 | LOP(OP_PUSH,XTERM); |
79072805 LW |
7964 | |
7965 | case KEY_pop: | |
6f33ba73 | 7966 | UNIDOR(OP_POP); |
79072805 | 7967 | |
a0d0e21e | 7968 | case KEY_pos: |
6f33ba73 | 7969 | UNIDOR(OP_POS); |
4e553d73 | 7970 | |
79072805 | 7971 | case KEY_pack: |
a0d0e21e | 7972 | LOP(OP_PACK,XTERM); |
79072805 LW |
7973 | |
7974 | case KEY_package: | |
a0d0e21e | 7975 | s = force_word(s,WORD,FALSE,TRUE,FALSE); |
14a86d0c | 7976 | s = SKIPSPACE1(s); |
91152fc1 | 7977 | s = force_strict_version(s); |
4e4da3ac | 7978 | PL_lex_expect = XBLOCK; |
79072805 LW |
7979 | OPERATOR(PACKAGE); |
7980 | ||
7981 | case KEY_pipe: | |
a0d0e21e | 7982 | LOP(OP_PIPE_OP,XTERM); |
79072805 LW |
7983 | |
7984 | case KEY_q: | |
d24ca0c5 | 7985 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
79072805 | 7986 | if (!s) |
d4c19fe8 | 7987 | missingterm(NULL); |
6154021b | 7988 | pl_yylval.ival = OP_CONST; |
79072805 LW |
7989 | TERM(sublex_start()); |
7990 | ||
a0d0e21e LW |
7991 | case KEY_quotemeta: |
7992 | UNI(OP_QUOTEMETA); | |
7993 | ||
ea25a9b2 Z |
7994 | case KEY_qw: { |
7995 | OP *words = NULL; | |
d24ca0c5 | 7996 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
8990e307 | 7997 | if (!s) |
d4c19fe8 | 7998 | missingterm(NULL); |
3480a8d2 | 7999 | PL_expect = XOPERATOR; |
8127e0e3 | 8000 | if (SvCUR(PL_lex_stuff)) { |
7e03b518 EB |
8001 | int warned_comma = !ckWARN(WARN_QW); |
8002 | int warned_comment = warned_comma; | |
3280af22 | 8003 | d = SvPV_force(PL_lex_stuff, len); |
8127e0e3 | 8004 | while (len) { |
d4c19fe8 AL |
8005 | for (; isSPACE(*d) && len; --len, ++d) |
8006 | /**/; | |
8127e0e3 | 8007 | if (len) { |
d4c19fe8 | 8008 | SV *sv; |
f54cb97a | 8009 | const char *b = d; |
7e03b518 | 8010 | if (!warned_comma || !warned_comment) { |
8127e0e3 | 8011 | for (; !isSPACE(*d) && len; --len, ++d) { |
7e03b518 | 8012 | if (!warned_comma && *d == ',') { |
9014280d | 8013 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 8014 | "Possible attempt to separate words with commas"); |
7e03b518 | 8015 | ++warned_comma; |
8127e0e3 | 8016 | } |
7e03b518 | 8017 | else if (!warned_comment && *d == '#') { |
9014280d | 8018 | Perl_warner(aTHX_ packWARN(WARN_QW), |
8127e0e3 | 8019 | "Possible attempt to put comments in qw() list"); |
7e03b518 | 8020 | ++warned_comment; |
8127e0e3 GS |
8021 | } |
8022 | } | |
8023 | } | |
8024 | else { | |
d4c19fe8 AL |
8025 | for (; !isSPACE(*d) && len; --len, ++d) |
8026 | /**/; | |
8127e0e3 | 8027 | } |
740cce10 | 8028 | sv = newSVpvn_utf8(b, d-b, DO_UTF8(PL_lex_stuff)); |
2fcb4757 | 8029 | words = op_append_elem(OP_LIST, words, |
7948272d | 8030 | newSVOP(OP_CONST, 0, tokeq(sv))); |
55497cff | 8031 | } |
8032 | } | |
8033 | } | |
ea25a9b2 Z |
8034 | if (!words) |
8035 | words = newNULLLIST(); | |
37fd879b | 8036 | if (PL_lex_stuff) { |
8127e0e3 | 8037 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 8038 | PL_lex_stuff = NULL; |
37fd879b | 8039 | } |
ea25a9b2 Z |
8040 | PL_expect = XOPERATOR; |
8041 | pl_yylval.opval = sawparens(words); | |
8042 | TOKEN(QWLIST); | |
8043 | } | |
8990e307 | 8044 | |
79072805 | 8045 | case KEY_qq: |
d24ca0c5 | 8046 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
79072805 | 8047 | if (!s) |
d4c19fe8 | 8048 | missingterm(NULL); |
6154021b | 8049 | pl_yylval.ival = OP_STRINGIFY; |
3280af22 | 8050 | if (SvIVX(PL_lex_stuff) == '\'') |
486ec47a | 8051 | SvIV_set(PL_lex_stuff, 0); /* qq'$foo' should interpolate */ |
79072805 LW |
8052 | TERM(sublex_start()); |
8053 | ||
8782bef2 GB |
8054 | case KEY_qr: |
8055 | s = scan_pat(s,OP_QR); | |
8056 | TERM(sublex_start()); | |
8057 | ||
79072805 | 8058 | case KEY_qx: |
d24ca0c5 | 8059 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
79072805 | 8060 | if (!s) |
d4c19fe8 | 8061 | missingterm(NULL); |
9b201d7d | 8062 | readpipe_override(); |
79072805 LW |
8063 | TERM(sublex_start()); |
8064 | ||
8065 | case KEY_return: | |
8066 | OLDLOP(OP_RETURN); | |
8067 | ||
8068 | case KEY_require: | |
29595ff2 | 8069 | s = SKIPSPACE1(s); |
c31f6d3b | 8070 | PL_expect = XOPERATOR; |
e759cc13 RGS |
8071 | if (isDIGIT(*s)) { |
8072 | s = force_version(s, FALSE); | |
a7cb1f99 | 8073 | } |
e759cc13 RGS |
8074 | else if (*s != 'v' || !isDIGIT(s[1]) |
8075 | || (s = force_version(s, TRUE), *s == 'v')) | |
8076 | { | |
a7cb1f99 GS |
8077 | *PL_tokenbuf = '\0'; |
8078 | s = force_word(s,WORD,TRUE,TRUE,FALSE); | |
7e2040f0 | 8079 | if (isIDFIRST_lazy_if(PL_tokenbuf,UTF)) |
af9f5953 BF |
8080 | gv_stashpvn(PL_tokenbuf, strlen(PL_tokenbuf), |
8081 | GV_ADD | (UTF ? SVf_UTF8 : 0)); | |
a7cb1f99 GS |
8082 | else if (*s == '<') |
8083 | yyerror("<> should be quotes"); | |
8084 | } | |
a72a1c8b RGS |
8085 | if (orig_keyword == KEY_require) { |
8086 | orig_keyword = 0; | |
6154021b | 8087 | pl_yylval.ival = 1; |
a72a1c8b RGS |
8088 | } |
8089 | else | |
6154021b | 8090 | pl_yylval.ival = 0; |
a72a1c8b RGS |
8091 | PL_expect = XTERM; |
8092 | PL_bufptr = s; | |
8093 | PL_last_uni = PL_oldbufptr; | |
8094 | PL_last_lop_op = OP_REQUIRE; | |
8095 | s = skipspace(s); | |
8096 | return REPORT( (int)REQUIRE ); | |
79072805 LW |
8097 | |
8098 | case KEY_reset: | |
8099 | UNI(OP_RESET); | |
8100 | ||
8101 | case KEY_redo: | |
c31f6d3b | 8102 | PL_expect = XOPERATOR; |
a0d0e21e | 8103 | s = force_word(s,WORD,TRUE,FALSE,FALSE); |
79072805 LW |
8104 | LOOPX(OP_REDO); |
8105 | ||
8106 | case KEY_rename: | |
a0d0e21e | 8107 | LOP(OP_RENAME,XTERM); |
79072805 LW |
8108 | |
8109 | case KEY_rand: | |
8110 | UNI(OP_RAND); | |
8111 | ||
8112 | case KEY_rmdir: | |
8113 | UNI(OP_RMDIR); | |
8114 | ||
8115 | case KEY_rindex: | |
a0d0e21e | 8116 | LOP(OP_RINDEX,XTERM); |
79072805 LW |
8117 | |
8118 | case KEY_read: | |
a0d0e21e | 8119 | LOP(OP_READ,XTERM); |
79072805 LW |
8120 | |
8121 | case KEY_readdir: | |
8122 | UNI(OP_READDIR); | |
8123 | ||
93a17b20 | 8124 | case KEY_readline: |
6f33ba73 | 8125 | UNIDOR(OP_READLINE); |
93a17b20 LW |
8126 | |
8127 | case KEY_readpipe: | |
0858480c | 8128 | UNIDOR(OP_BACKTICK); |
93a17b20 | 8129 | |
79072805 LW |
8130 | case KEY_rewinddir: |
8131 | UNI(OP_REWINDDIR); | |
8132 | ||
8133 | case KEY_recv: | |
a0d0e21e | 8134 | LOP(OP_RECV,XTERM); |
79072805 LW |
8135 | |
8136 | case KEY_reverse: | |
a0d0e21e | 8137 | LOP(OP_REVERSE,XTERM); |
79072805 LW |
8138 | |
8139 | case KEY_readlink: | |
6f33ba73 | 8140 | UNIDOR(OP_READLINK); |
79072805 LW |
8141 | |
8142 | case KEY_ref: | |
8143 | UNI(OP_REF); | |
8144 | ||
8145 | case KEY_s: | |
8146 | s = scan_subst(s); | |
6154021b | 8147 | if (pl_yylval.opval) |
79072805 LW |
8148 | TERM(sublex_start()); |
8149 | else | |
8150 | TOKEN(1); /* force error */ | |
8151 | ||
0d863452 RH |
8152 | case KEY_say: |
8153 | checkcomma(s,PL_tokenbuf,"filehandle"); | |
8154 | LOP(OP_SAY,XREF); | |
8155 | ||
a0d0e21e LW |
8156 | case KEY_chomp: |
8157 | UNI(OP_CHOMP); | |
4e553d73 | 8158 | |
79072805 LW |
8159 | case KEY_scalar: |
8160 | UNI(OP_SCALAR); | |
8161 | ||
8162 | case KEY_select: | |
a0d0e21e | 8163 | LOP(OP_SELECT,XTERM); |
79072805 LW |
8164 | |
8165 | case KEY_seek: | |
a0d0e21e | 8166 | LOP(OP_SEEK,XTERM); |
79072805 LW |
8167 | |
8168 | case KEY_semctl: | |
a0d0e21e | 8169 | LOP(OP_SEMCTL,XTERM); |
79072805 LW |
8170 | |
8171 | case KEY_semget: | |
a0d0e21e | 8172 | LOP(OP_SEMGET,XTERM); |
79072805 LW |
8173 | |
8174 | case KEY_semop: | |
a0d0e21e | 8175 | LOP(OP_SEMOP,XTERM); |
79072805 LW |
8176 | |
8177 | case KEY_send: | |
a0d0e21e | 8178 | LOP(OP_SEND,XTERM); |
79072805 LW |
8179 | |
8180 | case KEY_setpgrp: | |
a0d0e21e | 8181 | LOP(OP_SETPGRP,XTERM); |
79072805 LW |
8182 | |
8183 | case KEY_setpriority: | |
a0d0e21e | 8184 | LOP(OP_SETPRIORITY,XTERM); |
79072805 LW |
8185 | |
8186 | case KEY_sethostent: | |
ff68c719 | 8187 | UNI(OP_SHOSTENT); |
79072805 LW |
8188 | |
8189 | case KEY_setnetent: | |
ff68c719 | 8190 | UNI(OP_SNETENT); |
79072805 LW |
8191 | |
8192 | case KEY_setservent: | |
ff68c719 | 8193 | UNI(OP_SSERVENT); |
79072805 LW |
8194 | |
8195 | case KEY_setprotoent: | |
ff68c719 | 8196 | UNI(OP_SPROTOENT); |
79072805 LW |
8197 | |
8198 | case KEY_setpwent: | |
8199 | FUN0(OP_SPWENT); | |
8200 | ||
8201 | case KEY_setgrent: | |
8202 | FUN0(OP_SGRENT); | |
8203 | ||
8204 | case KEY_seekdir: | |
a0d0e21e | 8205 | LOP(OP_SEEKDIR,XTERM); |
79072805 LW |
8206 | |
8207 | case KEY_setsockopt: | |
a0d0e21e | 8208 | LOP(OP_SSOCKOPT,XTERM); |
79072805 LW |
8209 | |
8210 | case KEY_shift: | |
6f33ba73 | 8211 | UNIDOR(OP_SHIFT); |
79072805 LW |
8212 | |
8213 | case KEY_shmctl: | |
a0d0e21e | 8214 | LOP(OP_SHMCTL,XTERM); |
79072805 LW |
8215 | |
8216 | case KEY_shmget: | |
a0d0e21e | 8217 | LOP(OP_SHMGET,XTERM); |
79072805 LW |
8218 | |
8219 | case KEY_shmread: | |
a0d0e21e | 8220 | LOP(OP_SHMREAD,XTERM); |
79072805 LW |
8221 | |
8222 | case KEY_shmwrite: | |
a0d0e21e | 8223 | LOP(OP_SHMWRITE,XTERM); |
79072805 LW |
8224 | |
8225 | case KEY_shutdown: | |
a0d0e21e | 8226 | LOP(OP_SHUTDOWN,XTERM); |
79072805 LW |
8227 | |
8228 | case KEY_sin: | |
8229 | UNI(OP_SIN); | |
8230 | ||
8231 | case KEY_sleep: | |
8232 | UNI(OP_SLEEP); | |
8233 | ||
8234 | case KEY_socket: | |
a0d0e21e | 8235 | LOP(OP_SOCKET,XTERM); |
79072805 LW |
8236 | |
8237 | case KEY_socketpair: | |
a0d0e21e | 8238 | LOP(OP_SOCKPAIR,XTERM); |
79072805 LW |
8239 | |
8240 | case KEY_sort: | |
3280af22 | 8241 | checkcomma(s,PL_tokenbuf,"subroutine name"); |
29595ff2 | 8242 | s = SKIPSPACE1(s); |
3280af22 | 8243 | PL_expect = XTERM; |
15f0808c | 8244 | s = force_word(s,WORD,TRUE,TRUE,FALSE); |
a0d0e21e | 8245 | LOP(OP_SORT,XREF); |
79072805 LW |
8246 | |
8247 | case KEY_split: | |
a0d0e21e | 8248 | LOP(OP_SPLIT,XTERM); |
79072805 LW |
8249 | |
8250 | case KEY_sprintf: | |
a0d0e21e | 8251 | LOP(OP_SPRINTF,XTERM); |
79072805 LW |
8252 | |
8253 | case KEY_splice: | |
a0d0e21e | 8254 | LOP(OP_SPLICE,XTERM); |
79072805 LW |
8255 | |
8256 | case KEY_sqrt: | |
8257 | UNI(OP_SQRT); | |
8258 | ||
8259 | case KEY_srand: | |
8260 | UNI(OP_SRAND); | |
8261 | ||
8262 | case KEY_stat: | |
8263 | UNI(OP_STAT); | |
8264 | ||
8265 | case KEY_study: | |
79072805 LW |
8266 | UNI(OP_STUDY); |
8267 | ||
8268 | case KEY_substr: | |
a0d0e21e | 8269 | LOP(OP_SUBSTR,XTERM); |
79072805 LW |
8270 | |
8271 | case KEY_format: | |
8272 | case KEY_sub: | |
93a17b20 | 8273 | really_sub: |
09bef843 | 8274 | { |
24b6ef70 | 8275 | char * const tmpbuf = PL_tokenbuf + 1; |
9c5ffd7c | 8276 | SSize_t tboffset = 0; |
09bef843 | 8277 | expectation attrful; |
28cc6278 | 8278 | bool have_name, have_proto; |
f54cb97a | 8279 | const int key = tmp; |
09bef843 | 8280 | |
5db06880 NC |
8281 | #ifdef PERL_MAD |
8282 | SV *tmpwhite = 0; | |
8283 | ||
cd81e915 | 8284 | char *tstart = SvPVX(PL_linestr) + PL_realtokenstart; |
af9f5953 | 8285 | SV *subtoken = newSVpvn_flags(tstart, s - tstart, SvUTF8(PL_linestr)); |
cd81e915 | 8286 | PL_thistoken = 0; |
5db06880 NC |
8287 | |
8288 | d = s; | |
8289 | s = SKIPSPACE2(s,tmpwhite); | |
8290 | #else | |
8767b1ab | 8291 | d = s; |
09bef843 | 8292 | s = skipspace(s); |
5db06880 | 8293 | #endif |
09bef843 | 8294 | |
7e2040f0 | 8295 | if (isIDFIRST_lazy_if(s,UTF) || *s == '\'' || |
09bef843 SB |
8296 | (*s == ':' && s[1] == ':')) |
8297 | { | |
5db06880 | 8298 | #ifdef PERL_MAD |
4f61fd4b | 8299 | SV *nametoke = NULL; |
5db06880 NC |
8300 | #endif |
8301 | ||
09bef843 SB |
8302 | PL_expect = XBLOCK; |
8303 | attrful = XATTRBLOCK; | |
b1b65b59 JH |
8304 | /* remember buffer pos'n for later force_word */ |
8305 | tboffset = s - PL_oldbufptr; | |
24b6ef70 FC |
8306 | d = scan_word(s, tmpbuf, sizeof PL_tokenbuf - 1, TRUE, |
8307 | &len); | |
5db06880 NC |
8308 | #ifdef PERL_MAD |
8309 | if (PL_madskills) | |
af9f5953 | 8310 | nametoke = newSVpvn_flags(s, d - s, SvUTF8(PL_linestr)); |
5db06880 | 8311 | #endif |
689aac7b FC |
8312 | *PL_tokenbuf = '&'; |
8313 | if (memchr(tmpbuf, ':', len) || key != KEY_sub | |
8314 | || pad_findmy_pvn( | |
8315 | PL_tokenbuf, len + 1, UTF ? SVf_UTF8 : 0 | |
8316 | ) != NOT_IN_PAD) | |
6502358f | 8317 | sv_setpvn(PL_subname, tmpbuf, len); |
09bef843 SB |
8318 | else { |
8319 | sv_setsv(PL_subname,PL_curstname); | |
396482e1 | 8320 | sv_catpvs(PL_subname,"::"); |
09bef843 SB |
8321 | sv_catpvn(PL_subname,tmpbuf,len); |
8322 | } | |
af9f5953 BF |
8323 | if (SvUTF8(PL_linestr)) |
8324 | SvUTF8_on(PL_subname); | |
09bef843 | 8325 | have_name = TRUE; |
5db06880 | 8326 | |
60ac52eb | 8327 | |
5db06880 | 8328 | #ifdef PERL_MAD |
60ac52eb FC |
8329 | start_force(0); |
8330 | CURMAD('X', nametoke); | |
8331 | CURMAD('_', tmpwhite); | |
4210d3f1 | 8332 | force_ident_maybe_lex('&'); |
5db06880 NC |
8333 | |
8334 | s = SKIPSPACE2(d,tmpwhite); | |
8335 | #else | |
8336 | s = skipspace(d); | |
8337 | #endif | |
09bef843 | 8338 | } |
463ee0b2 | 8339 | else { |
8767b1ab FC |
8340 | if (key == KEY_my || key == KEY_our || key==KEY_state) |
8341 | { | |
8342 | *d = '\0'; | |
8343 | /* diag_listed_as: Missing name in "%s sub" */ | |
8344 | Perl_croak(aTHX_ | |
8345 | "Missing name in \"%s\"", PL_bufptr); | |
8346 | } | |
09bef843 SB |
8347 | PL_expect = XTERMBLOCK; |
8348 | attrful = XATTRTERM; | |
76f68e9b | 8349 | sv_setpvs(PL_subname,"?"); |
09bef843 | 8350 | have_name = FALSE; |
463ee0b2 | 8351 | } |
4633a7c4 | 8352 | |
09bef843 | 8353 | if (key == KEY_format) { |
5db06880 | 8354 | #ifdef PERL_MAD |
cd81e915 | 8355 | PL_thistoken = subtoken; |
5db06880 NC |
8356 | s = d; |
8357 | #else | |
09bef843 | 8358 | if (have_name) |
b1b65b59 JH |
8359 | (void) force_word(PL_oldbufptr + tboffset, WORD, |
8360 | FALSE, TRUE, TRUE); | |
5db06880 | 8361 | #endif |
64a40898 | 8362 | PREBLOCK(FORMAT); |
09bef843 | 8363 | } |
79072805 | 8364 | |
09bef843 SB |
8365 | /* Look for a prototype */ |
8366 | if (*s == '(') { | |
d9f2850e RGS |
8367 | char *p; |
8368 | bool bad_proto = FALSE; | |
9e8d7757 RB |
8369 | bool in_brackets = FALSE; |
8370 | char greedy_proto = ' '; | |
8371 | bool proto_after_greedy_proto = FALSE; | |
8372 | bool must_be_last = FALSE; | |
8373 | bool underscore = FALSE; | |
aef2a98a | 8374 | bool seen_underscore = FALSE; |
197afce1 | 8375 | const bool warnillegalproto = ckWARN(WARN_ILLEGALPROTO); |
dab1c735 | 8376 | STRLEN tmplen; |
09bef843 | 8377 | |
d24ca0c5 | 8378 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
37fd879b | 8379 | if (!s) |
09bef843 | 8380 | Perl_croak(aTHX_ "Prototype not terminated"); |
2f758a16 | 8381 | /* strip spaces and check for bad characters */ |
dab1c735 | 8382 | d = SvPV(PL_lex_stuff, tmplen); |
09bef843 | 8383 | tmp = 0; |
dab1c735 | 8384 | for (p = d; tmplen; tmplen--, ++p) { |
d9f2850e | 8385 | if (!isSPACE(*p)) { |
dab1c735 | 8386 | d[tmp++] = *p; |
9e8d7757 | 8387 | |
197afce1 | 8388 | if (warnillegalproto) { |
9e8d7757 RB |
8389 | if (must_be_last) |
8390 | proto_after_greedy_proto = TRUE; | |
dab1c735 | 8391 | if (!strchr("$@%*;[]&\\_+", *p) || *p == '\0') { |
9e8d7757 RB |
8392 | bad_proto = TRUE; |
8393 | } | |
8394 | else { | |
8395 | if ( underscore ) { | |
34daab0f | 8396 | if ( !strchr(";@%", *p) ) |
9e8d7757 RB |
8397 | bad_proto = TRUE; |
8398 | underscore = FALSE; | |
8399 | } | |
8400 | if ( *p == '[' ) { | |
8401 | in_brackets = TRUE; | |
8402 | } | |
8403 | else if ( *p == ']' ) { | |
8404 | in_brackets = FALSE; | |
8405 | } | |
8406 | else if ( (*p == '@' || *p == '%') && | |
8407 | ( tmp < 2 || d[tmp-2] != '\\' ) && | |
8408 | !in_brackets ) { | |
8409 | must_be_last = TRUE; | |
8410 | greedy_proto = *p; | |
8411 | } | |
8412 | else if ( *p == '_' ) { | |
aef2a98a | 8413 | underscore = seen_underscore = TRUE; |
9e8d7757 RB |
8414 | } |
8415 | } | |
8416 | } | |
d37a9538 | 8417 | } |
09bef843 | 8418 | } |
dab1c735 | 8419 | d[tmp] = '\0'; |
9e8d7757 | 8420 | if (proto_after_greedy_proto) |
197afce1 | 8421 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
9e8d7757 RB |
8422 | "Prototype after '%c' for %"SVf" : %s", |
8423 | greedy_proto, SVfARG(PL_subname), d); | |
dab1c735 BF |
8424 | if (bad_proto) { |
8425 | SV *dsv = newSVpvs_flags("", SVs_TEMP); | |
197afce1 | 8426 | Perl_warner(aTHX_ packWARN(WARN_ILLEGALPROTO), |
aef2a98a RGS |
8427 | "Illegal character %sin prototype for %"SVf" : %s", |
8428 | seen_underscore ? "after '_' " : "", | |
dab1c735 | 8429 | SVfARG(PL_subname), |
97eb901d BF |
8430 | SvUTF8(PL_lex_stuff) |
8431 | ? sv_uni_display(dsv, | |
8432 | newSVpvn_flags(d, tmp, SVs_TEMP | SVf_UTF8), | |
8433 | tmp, | |
8434 | UNI_DISPLAY_ISPRINT) | |
8435 | : pv_pretty(dsv, d, tmp, 60, NULL, NULL, | |
8436 | PERL_PV_ESCAPE_NONASCII)); | |
dab1c735 BF |
8437 | } |
8438 | SvCUR_set(PL_lex_stuff, tmp); | |
09bef843 | 8439 | have_proto = TRUE; |
68dc0745 | 8440 | |
5db06880 NC |
8441 | #ifdef PERL_MAD |
8442 | start_force(0); | |
cd81e915 | 8443 | CURMAD('q', PL_thisopen); |
5db06880 | 8444 | CURMAD('_', tmpwhite); |
cd81e915 NC |
8445 | CURMAD('=', PL_thisstuff); |
8446 | CURMAD('Q', PL_thisclose); | |
5db06880 NC |
8447 | NEXTVAL_NEXTTOKE.opval = |
8448 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); | |
1a9a51d4 | 8449 | PL_lex_stuff = NULL; |
5db06880 NC |
8450 | force_next(THING); |
8451 | ||
8452 | s = SKIPSPACE2(s,tmpwhite); | |
8453 | #else | |
09bef843 | 8454 | s = skipspace(s); |
5db06880 | 8455 | #endif |
4633a7c4 | 8456 | } |
09bef843 SB |
8457 | else |
8458 | have_proto = FALSE; | |
8459 | ||
8460 | if (*s == ':' && s[1] != ':') | |
8461 | PL_expect = attrful; | |
8e742a20 MHM |
8462 | else if (*s != '{' && key == KEY_sub) { |
8463 | if (!have_name) | |
8464 | Perl_croak(aTHX_ "Illegal declaration of anonymous subroutine"); | |
fd909433 | 8465 | else if (*s != ';' && *s != '}') |
be2597df | 8466 | Perl_croak(aTHX_ "Illegal declaration of subroutine %"SVf, SVfARG(PL_subname)); |
8e742a20 | 8467 | } |
09bef843 | 8468 | |
5db06880 NC |
8469 | #ifdef PERL_MAD |
8470 | start_force(0); | |
8471 | if (tmpwhite) { | |
8472 | if (PL_madskills) | |
6b29d1f5 | 8473 | curmad('^', newSVpvs("")); |
5db06880 NC |
8474 | CURMAD('_', tmpwhite); |
8475 | } | |
8476 | force_next(0); | |
8477 | ||
cd81e915 | 8478 | PL_thistoken = subtoken; |
5db06880 | 8479 | #else |
09bef843 | 8480 | if (have_proto) { |
9ded7720 | 8481 | NEXTVAL_NEXTTOKE.opval = |
b1b65b59 | 8482 | (OP*)newSVOP(OP_CONST, 0, PL_lex_stuff); |
a0714e2c | 8483 | PL_lex_stuff = NULL; |
09bef843 | 8484 | force_next(THING); |
68dc0745 | 8485 | } |
5db06880 | 8486 | #endif |
09bef843 | 8487 | if (!have_name) { |
49a54bbe NC |
8488 | if (PL_curstash) |
8489 | sv_setpvs(PL_subname, "__ANON__"); | |
8490 | else | |
8491 | sv_setpvs(PL_subname, "__ANON__::__ANON__"); | |
09bef843 | 8492 | TOKEN(ANONSUB); |
4633a7c4 | 8493 | } |
5db06880 | 8494 | #ifndef PERL_MAD |
4210d3f1 | 8495 | force_ident_maybe_lex('&'); |
5db06880 | 8496 | #endif |
09bef843 | 8497 | TOKEN(SUB); |
4633a7c4 | 8498 | } |
79072805 LW |
8499 | |
8500 | case KEY_system: | |
a0d0e21e | 8501 | LOP(OP_SYSTEM,XREF); |
79072805 LW |
8502 | |
8503 | case KEY_symlink: | |
a0d0e21e | 8504 | LOP(OP_SYMLINK,XTERM); |
79072805 LW |
8505 | |
8506 | case KEY_syscall: | |
a0d0e21e | 8507 | LOP(OP_SYSCALL,XTERM); |
79072805 | 8508 | |
c07a80fd | 8509 | case KEY_sysopen: |
8510 | LOP(OP_SYSOPEN,XTERM); | |
8511 | ||
137443ea | 8512 | case KEY_sysseek: |
8513 | LOP(OP_SYSSEEK,XTERM); | |
8514 | ||
79072805 | 8515 | case KEY_sysread: |
a0d0e21e | 8516 | LOP(OP_SYSREAD,XTERM); |
79072805 LW |
8517 | |
8518 | case KEY_syswrite: | |
a0d0e21e | 8519 | LOP(OP_SYSWRITE,XTERM); |
79072805 LW |
8520 | |
8521 | case KEY_tr: | |
8ce4b50f | 8522 | case KEY_y: |
79072805 LW |
8523 | s = scan_trans(s); |
8524 | TERM(sublex_start()); | |
8525 | ||
8526 | case KEY_tell: | |
8527 | UNI(OP_TELL); | |
8528 | ||
8529 | case KEY_telldir: | |
8530 | UNI(OP_TELLDIR); | |
8531 | ||
463ee0b2 | 8532 | case KEY_tie: |
a0d0e21e | 8533 | LOP(OP_TIE,XTERM); |
463ee0b2 | 8534 | |
c07a80fd | 8535 | case KEY_tied: |
8536 | UNI(OP_TIED); | |
8537 | ||
79072805 LW |
8538 | case KEY_time: |
8539 | FUN0(OP_TIME); | |
8540 | ||
8541 | case KEY_times: | |
8542 | FUN0(OP_TMS); | |
8543 | ||
8544 | case KEY_truncate: | |
a0d0e21e | 8545 | LOP(OP_TRUNCATE,XTERM); |
79072805 LW |
8546 | |
8547 | case KEY_uc: | |
8548 | UNI(OP_UC); | |
8549 | ||
8550 | case KEY_ucfirst: | |
8551 | UNI(OP_UCFIRST); | |
8552 | ||
463ee0b2 LW |
8553 | case KEY_untie: |
8554 | UNI(OP_UNTIE); | |
8555 | ||
79072805 | 8556 | case KEY_until: |
78cdf107 Z |
8557 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8558 | return REPORT(0); | |
6154021b | 8559 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8560 | OPERATOR(UNTIL); |
8561 | ||
8562 | case KEY_unless: | |
78cdf107 Z |
8563 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8564 | return REPORT(0); | |
6154021b | 8565 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8566 | OPERATOR(UNLESS); |
8567 | ||
8568 | case KEY_unlink: | |
a0d0e21e | 8569 | LOP(OP_UNLINK,XTERM); |
79072805 LW |
8570 | |
8571 | case KEY_undef: | |
6f33ba73 | 8572 | UNIDOR(OP_UNDEF); |
79072805 LW |
8573 | |
8574 | case KEY_unpack: | |
a0d0e21e | 8575 | LOP(OP_UNPACK,XTERM); |
79072805 LW |
8576 | |
8577 | case KEY_utime: | |
a0d0e21e | 8578 | LOP(OP_UTIME,XTERM); |
79072805 LW |
8579 | |
8580 | case KEY_umask: | |
6f33ba73 | 8581 | UNIDOR(OP_UMASK); |
79072805 LW |
8582 | |
8583 | case KEY_unshift: | |
a0d0e21e LW |
8584 | LOP(OP_UNSHIFT,XTERM); |
8585 | ||
8586 | case KEY_use: | |
468aa647 | 8587 | s = tokenize_use(1, s); |
a0d0e21e | 8588 | OPERATOR(USE); |
79072805 LW |
8589 | |
8590 | case KEY_values: | |
8591 | UNI(OP_VALUES); | |
8592 | ||
8593 | case KEY_vec: | |
a0d0e21e | 8594 | LOP(OP_VEC,XTERM); |
79072805 | 8595 | |
0d863452 | 8596 | case KEY_when: |
78cdf107 Z |
8597 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8598 | return REPORT(0); | |
6154021b | 8599 | pl_yylval.ival = CopLINE(PL_curcop); |
0d863452 RH |
8600 | OPERATOR(WHEN); |
8601 | ||
79072805 | 8602 | case KEY_while: |
78cdf107 Z |
8603 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_NONEXPR) |
8604 | return REPORT(0); | |
6154021b | 8605 | pl_yylval.ival = CopLINE(PL_curcop); |
79072805 LW |
8606 | OPERATOR(WHILE); |
8607 | ||
8608 | case KEY_warn: | |
3280af22 | 8609 | PL_hints |= HINT_BLOCK_SCOPE; |
a0d0e21e | 8610 | LOP(OP_WARN,XTERM); |
79072805 LW |
8611 | |
8612 | case KEY_wait: | |
8613 | FUN0(OP_WAIT); | |
8614 | ||
8615 | case KEY_waitpid: | |
a0d0e21e | 8616 | LOP(OP_WAITPID,XTERM); |
79072805 LW |
8617 | |
8618 | case KEY_wantarray: | |
8619 | FUN0(OP_WANTARRAY); | |
8620 | ||
8621 | case KEY_write: | |
9d116dd7 JH |
8622 | #ifdef EBCDIC |
8623 | { | |
df3728a2 JH |
8624 | char ctl_l[2]; |
8625 | ctl_l[0] = toCTRL('L'); | |
8626 | ctl_l[1] = '\0'; | |
fafc274c | 8627 | gv_fetchpvn_flags(ctl_l, 1, GV_ADD|GV_NOTQUAL, SVt_PV); |
9d116dd7 JH |
8628 | } |
8629 | #else | |
fafc274c NC |
8630 | /* Make sure $^L is defined */ |
8631 | gv_fetchpvs("\f", GV_ADD|GV_NOTQUAL, SVt_PV); | |
9d116dd7 | 8632 | #endif |
79072805 LW |
8633 | UNI(OP_ENTERWRITE); |
8634 | ||
8635 | case KEY_x: | |
78cdf107 Z |
8636 | if (PL_expect == XOPERATOR) { |
8637 | if (*s == '=' && !PL_lex_allbrackets && | |
8638 | PL_lex_fakeeof >= LEX_FAKEEOF_ASSIGN) | |
8639 | return REPORT(0); | |
79072805 | 8640 | Mop(OP_REPEAT); |
78cdf107 | 8641 | } |
79072805 LW |
8642 | check_uni(); |
8643 | goto just_a_word; | |
8644 | ||
a0d0e21e | 8645 | case KEY_xor: |
78cdf107 Z |
8646 | if (!PL_lex_allbrackets && PL_lex_fakeeof >= LEX_FAKEEOF_LOWLOGIC) |
8647 | return REPORT(0); | |
6154021b | 8648 | pl_yylval.ival = OP_XOR; |
a0d0e21e | 8649 | OPERATOR(OROP); |
79072805 | 8650 | } |
49dc05e3 | 8651 | }} |
79072805 | 8652 | } |
bf4acbe4 GS |
8653 | #ifdef __SC__ |
8654 | #pragma segment Main | |
8655 | #endif | |
79072805 | 8656 | |
3f33d153 FC |
8657 | static int |
8658 | S_pending_ident(pTHX) | |
8eceec63 | 8659 | { |
97aff369 | 8660 | dVAR; |
bbd11bfc | 8661 | PADOFFSET tmp = 0; |
3f33d153 | 8662 | const char pit = (char)pl_yylval.ival; |
9bde8eb0 NC |
8663 | const STRLEN tokenbuf_len = strlen(PL_tokenbuf); |
8664 | /* All routes through this function want to know if there is a colon. */ | |
c099d646 | 8665 | const char *const has_colon = (const char*) memchr (PL_tokenbuf, ':', tokenbuf_len); |
8eceec63 | 8666 | |
3f33d153 FC |
8667 | DEBUG_T({ PerlIO_printf(Perl_debug_log, |
8668 | "### Pending identifier '%s'\n", PL_tokenbuf); }); | |
8eceec63 SC |
8669 | |
8670 | /* if we're in a my(), we can't allow dynamics here. | |
8671 | $foo'bar has already been turned into $foo::bar, so | |
8672 | just check for colons. | |
8673 | ||
8674 | if it's a legal name, the OP is a PADANY. | |
8675 | */ | |
8676 | if (PL_in_my) { | |
8677 | if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */ | |
9bde8eb0 | 8678 | if (has_colon) |
4bca4ee0 | 8679 | yyerror_pv(Perl_form(aTHX_ "No package name allowed for " |
8eceec63 | 8680 | "variable %s in \"our\"", |
4bca4ee0 | 8681 | PL_tokenbuf), UTF ? SVf_UTF8 : 0); |
bc9b26ca | 8682 | tmp = allocmy(PL_tokenbuf, tokenbuf_len, UTF ? SVf_UTF8 : 0); |
8eceec63 SC |
8683 | } |
8684 | else { | |
9bde8eb0 | 8685 | if (has_colon) |
58576270 BF |
8686 | yyerror_pv(Perl_form(aTHX_ PL_no_myglob, |
8687 | PL_in_my == KEY_my ? "my" : "state", PL_tokenbuf), | |
8688 | UTF ? SVf_UTF8 : 0); | |
8eceec63 | 8689 | |
3f33d153 FC |
8690 | pl_yylval.opval = newOP(OP_PADANY, 0); |
8691 | pl_yylval.opval->op_targ = allocmy(PL_tokenbuf, tokenbuf_len, | |
bc9b26ca | 8692 | UTF ? SVf_UTF8 : 0); |
3f33d153 | 8693 | return PRIVATEREF; |
8eceec63 SC |
8694 | } |
8695 | } | |
8696 | ||
8697 | /* | |
8698 | build the ops for accesses to a my() variable. | |
8eceec63 SC |
8699 | */ |
8700 | ||
9bde8eb0 | 8701 | if (!has_colon) { |
8716503d | 8702 | if (!PL_in_my) |
bc9b26ca BF |
8703 | tmp = pad_findmy_pvn(PL_tokenbuf, tokenbuf_len, |
8704 | UTF ? SVf_UTF8 : 0); | |
8716503d | 8705 | if (tmp != NOT_IN_PAD) { |
8eceec63 | 8706 | /* might be an "our" variable" */ |
00b1698f | 8707 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
8eceec63 | 8708 | /* build ops for a bareword */ |
b64e5050 AL |
8709 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
8710 | HEK * const stashname = HvNAME_HEK(stash); | |
8711 | SV * const sym = newSVhek(stashname); | |
396482e1 | 8712 | sv_catpvs(sym, "::"); |
2a33114a | 8713 | sv_catpvn_flags(sym, PL_tokenbuf+1, tokenbuf_len - 1, (UTF ? SV_CATUTF8 : SV_CATBYTES )); |
3f33d153 FC |
8714 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, sym); |
8715 | pl_yylval.opval->op_private = OPpCONST_ENTERED; | |
4210d3f1 FC |
8716 | if (pit != '&') |
8717 | gv_fetchsv(sym, | |
8eceec63 SC |
8718 | (PL_in_eval |
8719 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
700078d2 | 8720 | : GV_ADDMULTI |
8eceec63 SC |
8721 | ), |
8722 | ((PL_tokenbuf[0] == '$') ? SVt_PV | |
8723 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8724 | : SVt_PVHV)); | |
3f33d153 | 8725 | return WORD; |
8eceec63 SC |
8726 | } |
8727 | ||
3f33d153 FC |
8728 | pl_yylval.opval = newOP(OP_PADANY, 0); |
8729 | pl_yylval.opval->op_targ = tmp; | |
8730 | return PRIVATEREF; | |
8eceec63 SC |
8731 | } |
8732 | } | |
8733 | ||
8734 | /* | |
8735 | Whine if they've said @foo in a doublequoted string, | |
8736 | and @foo isn't a variable we can find in the symbol | |
8737 | table. | |
8738 | */ | |
d824713b NC |
8739 | if (ckWARN(WARN_AMBIGUOUS) && |
8740 | pit == '@' && PL_lex_state != LEX_NORMAL && !PL_lex_brackets) { | |
0be4d16f BF |
8741 | GV *const gv = gv_fetchpvn_flags(PL_tokenbuf + 1, tokenbuf_len - 1, |
8742 | ( UTF ? SVf_UTF8 : 0 ), SVt_PVAV); | |
8eceec63 | 8743 | if ((!gv || ((PL_tokenbuf[0] == '@') ? !GvAV(gv) : !GvHV(gv))) |
e879d94f RGS |
8744 | /* DO NOT warn for @- and @+ */ |
8745 | && !( PL_tokenbuf[2] == '\0' && | |
8746 | ( PL_tokenbuf[1] == '-' || PL_tokenbuf[1] == '+' )) | |
8747 | ) | |
8eceec63 SC |
8748 | { |
8749 | /* Downgraded from fatal to warning 20000522 mjd */ | |
d824713b | 8750 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
29fb1d0e BF |
8751 | "Possible unintended interpolation of %"SVf" in string", |
8752 | SVfARG(newSVpvn_flags(PL_tokenbuf, tokenbuf_len, | |
8753 | SVs_TEMP | ( UTF ? SVf_UTF8 : 0 )))); | |
8eceec63 SC |
8754 | } |
8755 | } | |
8756 | ||
8757 | /* build ops for a bareword */ | |
3f33d153 FC |
8758 | pl_yylval.opval = (OP*)newSVOP(OP_CONST, 0, |
8759 | newSVpvn_flags(PL_tokenbuf + 1, | |
0be4d16f BF |
8760 | tokenbuf_len - 1, |
8761 | UTF ? SVf_UTF8 : 0 )); | |
3f33d153 | 8762 | pl_yylval.opval->op_private = OPpCONST_ENTERED; |
4210d3f1 FC |
8763 | if (pit != '&') |
8764 | gv_fetchpvn_flags(PL_tokenbuf+1, tokenbuf_len - 1, | |
0be4d16f BF |
8765 | (PL_in_eval ? (GV_ADDMULTI | GV_ADDINEVAL) : GV_ADD) |
8766 | | ( UTF ? SVf_UTF8 : 0 ), | |
223f0fb7 NC |
8767 | ((PL_tokenbuf[0] == '$') ? SVt_PV |
8768 | : (PL_tokenbuf[0] == '@') ? SVt_PVAV | |
8769 | : SVt_PVHV)); | |
3f33d153 | 8770 | return WORD; |
8eceec63 SC |
8771 | } |
8772 | ||
76e3520e | 8773 | STATIC void |
c94115d8 | 8774 | S_checkcomma(pTHX_ const char *s, const char *name, const char *what) |
a687059c | 8775 | { |
97aff369 | 8776 | dVAR; |
2f3197b3 | 8777 | |
7918f24d NC |
8778 | PERL_ARGS_ASSERT_CHECKCOMMA; |
8779 | ||
d008e5eb | 8780 | if (*s == ' ' && s[1] == '(') { /* XXX gotta be a better way */ |
d008e5eb GS |
8781 | if (ckWARN(WARN_SYNTAX)) { |
8782 | int level = 1; | |
26ff0806 | 8783 | const char *w; |
d008e5eb GS |
8784 | for (w = s+2; *w && level; w++) { |
8785 | if (*w == '(') | |
8786 | ++level; | |
8787 | else if (*w == ')') | |
8788 | --level; | |
8789 | } | |
888fea98 NC |
8790 | while (isSPACE(*w)) |
8791 | ++w; | |
b1439985 RGS |
8792 | /* the list of chars below is for end of statements or |
8793 | * block / parens, boolean operators (&&, ||, //) and branch | |
8794 | * constructs (or, and, if, until, unless, while, err, for). | |
8795 | * Not a very solid hack... */ | |
8796 | if (!*w || !strchr(";&/|})]oaiuwef!=", *w)) | |
9014280d | 8797 | Perl_warner(aTHX_ packWARN(WARN_SYNTAX), |
65cec589 | 8798 | "%s (...) interpreted as function",name); |
d008e5eb | 8799 | } |
2f3197b3 | 8800 | } |
3280af22 | 8801 | while (s < PL_bufend && isSPACE(*s)) |
2f3197b3 | 8802 | s++; |
a687059c LW |
8803 | if (*s == '(') |
8804 | s++; | |
3280af22 | 8805 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 8806 | s++; |
7e2040f0 | 8807 | if (isIDFIRST_lazy_if(s,UTF)) { |
d0fb66e4 BF |
8808 | const char * const w = s; |
8809 | s += UTF ? UTF8SKIP(s) : 1; | |
7e2040f0 | 8810 | while (isALNUM_lazy_if(s,UTF)) |
d0fb66e4 | 8811 | s += UTF ? UTF8SKIP(s) : 1; |
3280af22 | 8812 | while (s < PL_bufend && isSPACE(*s)) |
a687059c | 8813 | s++; |
e929a76b | 8814 | if (*s == ',') { |
c94115d8 | 8815 | GV* gv; |
5458a98a | 8816 | if (keyword(w, s - w, 0)) |
e929a76b | 8817 | return; |
c94115d8 | 8818 | |
2e38bce1 | 8819 | gv = gv_fetchpvn_flags(w, s - w, ( UTF ? SVf_UTF8 : 0 ), SVt_PVCV); |
c94115d8 | 8820 | if (gv && GvCVu(gv)) |
abbb3198 | 8821 | return; |
cea2e8a9 | 8822 | Perl_croak(aTHX_ "No comma allowed after %s", what); |
463ee0b2 LW |
8823 | } |
8824 | } | |
8825 | } | |
8826 | ||
423cee85 JH |
8827 | /* Either returns sv, or mortalizes sv and returns a new SV*. |
8828 | Best used as sv=new_constant(..., sv, ...). | |
8829 | If s, pv are NULL, calls subroutine with one argument, | |
8830 | and type is used with error messages only. */ | |
8831 | ||
b3ac6de7 | 8832 | STATIC SV * |
eb0d8d16 NC |
8833 | S_new_constant(pTHX_ const char *s, STRLEN len, const char *key, STRLEN keylen, |
8834 | SV *sv, SV *pv, const char *type, STRLEN typelen) | |
b3ac6de7 | 8835 | { |
27da23d5 | 8836 | dVAR; dSP; |
fbb93542 | 8837 | HV * table = GvHV(PL_hintgv); /* ^H */ |
b3ac6de7 | 8838 | SV *res; |
b3ac6de7 IZ |
8839 | SV **cvp; |
8840 | SV *cv, *typesv; | |
89e33a05 | 8841 | const char *why1 = "", *why2 = "", *why3 = ""; |
4e553d73 | 8842 | |
7918f24d NC |
8843 | PERL_ARGS_ASSERT_NEW_CONSTANT; |
8844 | ||
f8988b41 KW |
8845 | /* charnames doesn't work well if there have been errors found */ |
8846 | if (PL_error_count > 0 && strEQ(key,"charnames")) | |
8847 | return &PL_sv_undef; | |
8848 | ||
fbb93542 KW |
8849 | if (!table |
8850 | || ! (PL_hints & HINT_LOCALIZE_HH) | |
8851 | || ! (cvp = hv_fetch(table, key, keylen, FALSE)) | |
8852 | || ! SvOK(*cvp)) | |
8853 | { | |
423cee85 JH |
8854 | SV *msg; |
8855 | ||
fbb93542 KW |
8856 | /* Here haven't found what we're looking for. If it is charnames, |
8857 | * perhaps it needs to be loaded. Try doing that before giving up */ | |
8858 | if (strEQ(key,"charnames")) { | |
8859 | Perl_load_module(aTHX_ | |
8860 | 0, | |
8861 | newSVpvs("_charnames"), | |
8862 | /* version parameter; no need to specify it, as if | |
8863 | * we get too early a version, will fail anyway, | |
8864 | * not being able to find '_charnames' */ | |
8865 | NULL, | |
8866 | newSVpvs(":full"), | |
8867 | newSVpvs(":short"), | |
8868 | NULL); | |
8869 | SPAGAIN; | |
8870 | table = GvHV(PL_hintgv); | |
8871 | if (table | |
8872 | && (PL_hints & HINT_LOCALIZE_HH) | |
8873 | && (cvp = hv_fetch(table, key, keylen, FALSE)) | |
8874 | && SvOK(*cvp)) | |
8875 | { | |
8876 | goto now_ok; | |
8877 | } | |
8878 | } | |
8879 | if (!table || !(PL_hints & HINT_LOCALIZE_HH)) { | |
8880 | msg = Perl_newSVpvf(aTHX_ | |
8881 | "Constant(%s) unknown", (type ? type: "undef")); | |
8882 | } | |
8883 | else { | |
8884 | why1 = "$^H{"; | |
8885 | why2 = key; | |
8886 | why3 = "} is not defined"; | |
423cee85 | 8887 | report: |
4e553d73 | 8888 | msg = Perl_newSVpvf(aTHX_ "Constant(%s): %s%s%s", |
f0af216f | 8889 | (type ? type: "undef"), why1, why2, why3); |
fbb93542 | 8890 | } |
95a20fc0 | 8891 | yyerror(SvPVX_const(msg)); |
423cee85 JH |
8892 | SvREFCNT_dec(msg); |
8893 | return sv; | |
8894 | } | |
fbb93542 | 8895 | now_ok: |
b3ac6de7 IZ |
8896 | sv_2mortal(sv); /* Parent created it permanently */ |
8897 | cv = *cvp; | |
423cee85 | 8898 | if (!pv && s) |
59cd0e26 | 8899 | pv = newSVpvn_flags(s, len, SVs_TEMP); |
423cee85 | 8900 | if (type && pv) |
59cd0e26 | 8901 | typesv = newSVpvn_flags(type, typelen, SVs_TEMP); |
b3ac6de7 | 8902 | else |
423cee85 | 8903 | typesv = &PL_sv_undef; |
4e553d73 | 8904 | |
e788e7d3 | 8905 | PUSHSTACKi(PERLSI_OVERLOAD); |
423cee85 JH |
8906 | ENTER ; |
8907 | SAVETMPS; | |
4e553d73 | 8908 | |
423cee85 | 8909 | PUSHMARK(SP) ; |
a5845cb7 | 8910 | EXTEND(sp, 3); |
423cee85 JH |
8911 | if (pv) |
8912 | PUSHs(pv); | |
b3ac6de7 | 8913 | PUSHs(sv); |
423cee85 JH |
8914 | if (pv) |
8915 | PUSHs(typesv); | |
b3ac6de7 | 8916 | PUTBACK; |
423cee85 | 8917 | call_sv(cv, G_SCALAR | ( PL_in_eval ? 0 : G_EVAL)); |
4e553d73 | 8918 | |
423cee85 | 8919 | SPAGAIN ; |
4e553d73 | 8920 | |
423cee85 | 8921 | /* Check the eval first */ |
9b0e499b | 8922 | if (!PL_in_eval && SvTRUE(ERRSV)) { |
396482e1 | 8923 | sv_catpvs(ERRSV, "Propagated"); |
8b6b16e7 | 8924 | yyerror(SvPV_nolen_const(ERRSV)); /* Duplicates the message inside eval */ |
e1f15930 | 8925 | (void)POPs; |
b37c2d43 | 8926 | res = SvREFCNT_inc_simple(sv); |
423cee85 JH |
8927 | } |
8928 | else { | |
8929 | res = POPs; | |
b37c2d43 | 8930 | SvREFCNT_inc_simple_void(res); |
423cee85 | 8931 | } |
4e553d73 | 8932 | |
423cee85 JH |
8933 | PUTBACK ; |
8934 | FREETMPS ; | |
8935 | LEAVE ; | |
b3ac6de7 | 8936 | POPSTACK; |
4e553d73 | 8937 | |
b3ac6de7 | 8938 | if (!SvOK(res)) { |
423cee85 JH |
8939 | why1 = "Call to &{$^H{"; |
8940 | why2 = key; | |
f0af216f | 8941 | why3 = "}} did not return a defined value"; |
423cee85 JH |
8942 | sv = res; |
8943 | goto report; | |
9b0e499b | 8944 | } |
423cee85 | 8945 | |
9b0e499b | 8946 | return res; |
b3ac6de7 | 8947 | } |
4e553d73 | 8948 | |
d0a148a6 NC |
8949 | /* Returns a NUL terminated string, with the length of the string written to |
8950 | *slp | |
8951 | */ | |
76e3520e | 8952 | STATIC char * |
cea2e8a9 | 8953 | S_scan_word(pTHX_ register char *s, char *dest, STRLEN destlen, int allow_package, STRLEN *slp) |
463ee0b2 | 8954 | { |
97aff369 | 8955 | dVAR; |
eb578fdb KW |
8956 | char *d = dest; |
8957 | char * const e = d + destlen - 3; /* two-character token, ending NUL */ | |
7918f24d NC |
8958 | |
8959 | PERL_ARGS_ASSERT_SCAN_WORD; | |
8960 | ||
463ee0b2 | 8961 | for (;;) { |
8903cb82 | 8962 | if (d >= e) |
cea2e8a9 | 8963 | Perl_croak(aTHX_ ident_too_long); |
5db1eb8d | 8964 | if (isALNUM(*s) || (!UTF && isALNUMC_L1(*s))) /* UTF handled below */ |
463ee0b2 | 8965 | *d++ = *s++; |
c35e046a | 8966 | else if (allow_package && (*s == '\'') && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
8967 | *d++ = ':'; |
8968 | *d++ = ':'; | |
8969 | s++; | |
8970 | } | |
c35e046a | 8971 | else if (allow_package && (s[0] == ':') && (s[1] == ':') && (s[2] != '$')) { |
463ee0b2 LW |
8972 | *d++ = *s++; |
8973 | *d++ = *s++; | |
8974 | } | |
fd400ab9 | 8975 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 8976 | char *t = s + UTF8SKIP(s); |
c35e046a | 8977 | size_t len; |
fd400ab9 | 8978 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 | 8979 | t += UTF8SKIP(t); |
c35e046a AL |
8980 | len = t - s; |
8981 | if (d + len > e) | |
cea2e8a9 | 8982 | Perl_croak(aTHX_ ident_too_long); |
c35e046a AL |
8983 | Copy(s, d, len, char); |
8984 | d += len; | |
a0ed51b3 LW |
8985 | s = t; |
8986 | } | |
463ee0b2 LW |
8987 | else { |
8988 | *d = '\0'; | |
8989 | *slp = d - dest; | |
8990 | return s; | |
e929a76b | 8991 | } |
378cc40b LW |
8992 | } |
8993 | } | |
8994 | ||
76e3520e | 8995 | STATIC char * |
f54cb97a | 8996 | S_scan_ident(pTHX_ register char *s, register const char *send, char *dest, STRLEN destlen, I32 ck_uni) |
378cc40b | 8997 | { |
97aff369 | 8998 | dVAR; |
6136c704 | 8999 | char *bracket = NULL; |
748a9306 | 9000 | char funny = *s++; |
eb578fdb KW |
9001 | char *d = dest; |
9002 | char * const e = d + destlen - 3; /* two-character token, ending NUL */ | |
378cc40b | 9003 | |
7918f24d NC |
9004 | PERL_ARGS_ASSERT_SCAN_IDENT; |
9005 | ||
a0d0e21e | 9006 | if (isSPACE(*s)) |
29595ff2 | 9007 | s = PEEKSPACE(s); |
de3bb511 | 9008 | if (isDIGIT(*s)) { |
8903cb82 | 9009 | while (isDIGIT(*s)) { |
9010 | if (d >= e) | |
cea2e8a9 | 9011 | Perl_croak(aTHX_ ident_too_long); |
378cc40b | 9012 | *d++ = *s++; |
8903cb82 | 9013 | } |
378cc40b LW |
9014 | } |
9015 | else { | |
463ee0b2 | 9016 | for (;;) { |
8903cb82 | 9017 | if (d >= e) |
cea2e8a9 | 9018 | Perl_croak(aTHX_ ident_too_long); |
834a4ddd | 9019 | if (isALNUM(*s)) /* UTF handled below */ |
463ee0b2 | 9020 | *d++ = *s++; |
7e2040f0 | 9021 | else if (*s == '\'' && isIDFIRST_lazy_if(s+1,UTF)) { |
463ee0b2 LW |
9022 | *d++ = ':'; |
9023 | *d++ = ':'; | |
9024 | s++; | |
9025 | } | |
a0d0e21e | 9026 | else if (*s == ':' && s[1] == ':') { |
463ee0b2 LW |
9027 | *d++ = *s++; |
9028 | *d++ = *s++; | |
9029 | } | |
fd400ab9 | 9030 | else if (UTF && UTF8_IS_START(*s) && isALNUM_utf8((U8*)s)) { |
a0ed51b3 | 9031 | char *t = s + UTF8SKIP(s); |
fd400ab9 | 9032 | while (UTF8_IS_CONTINUED(*t) && is_utf8_mark((U8*)t)) |
a0ed51b3 LW |
9033 | t += UTF8SKIP(t); |
9034 | if (d + (t - s) > e) | |
cea2e8a9 | 9035 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 LW |
9036 | Copy(s, d, t - s, char); |
9037 | d += t - s; | |
9038 | s = t; | |
9039 | } | |
463ee0b2 LW |
9040 | else |
9041 | break; | |
9042 | } | |
378cc40b LW |
9043 | } |
9044 | *d = '\0'; | |
9045 | d = dest; | |
79072805 | 9046 | if (*d) { |
3280af22 NIS |
9047 | if (PL_lex_state != LEX_NORMAL) |
9048 | PL_lex_state = LEX_INTERPENDMAYBE; | |
79072805 | 9049 | return s; |
378cc40b | 9050 | } |
748a9306 | 9051 | if (*s == '$' && s[1] && |
3792a11b | 9052 | (isALNUM_lazy_if(s+1,UTF) || s[1] == '$' || s[1] == '{' || strnEQ(s+1,"::",2)) ) |
5cd24f17 | 9053 | { |
4810e5ec | 9054 | return s; |
5cd24f17 | 9055 | } |
79072805 LW |
9056 | if (*s == '{') { |
9057 | bracket = s; | |
9058 | s++; | |
9059 | } | |
204e6232 BF |
9060 | if (s < send) { |
9061 | if (UTF) { | |
9062 | const STRLEN skip = UTF8SKIP(s); | |
9063 | STRLEN i; | |
9064 | d[skip] = '\0'; | |
9065 | for ( i = 0; i < skip; i++ ) | |
9066 | d[i] = *s++; | |
9067 | } | |
9068 | else { | |
9069 | *d = *s++; | |
9070 | d[1] = '\0'; | |
9071 | } | |
9072 | } | |
2b92dfce | 9073 | if (*d == '^' && *s && isCONTROLVAR(*s)) { |
bbce6d69 | 9074 | *d = toCTRL(*s); |
9075 | s++; | |
de3bb511 | 9076 | } |
fbdd83da DIM |
9077 | else if (ck_uni && !bracket) |
9078 | check_uni(); | |
79072805 | 9079 | if (bracket) { |
748a9306 | 9080 | if (isSPACE(s[-1])) { |
fa83b5b6 | 9081 | while (s < send) { |
f54cb97a | 9082 | const char ch = *s++; |
bf4acbe4 | 9083 | if (!SPACE_OR_TAB(ch)) { |
fa83b5b6 | 9084 | *d = ch; |
9085 | break; | |
9086 | } | |
9087 | } | |
748a9306 | 9088 | } |
7e2040f0 | 9089 | if (isIDFIRST_lazy_if(d,UTF)) { |
204e6232 | 9090 | d += UTF8SKIP(d); |
a0ed51b3 | 9091 | if (UTF) { |
6136c704 AL |
9092 | char *end = s; |
9093 | while ((end < send && isALNUM_lazy_if(end,UTF)) || *end == ':') { | |
9094 | end += UTF8SKIP(end); | |
9095 | while (end < send && UTF8_IS_CONTINUED(*end) && is_utf8_mark((U8*)end)) | |
9096 | end += UTF8SKIP(end); | |
a0ed51b3 | 9097 | } |
6136c704 AL |
9098 | Copy(s, d, end - s, char); |
9099 | d += end - s; | |
9100 | s = end; | |
a0ed51b3 LW |
9101 | } |
9102 | else { | |
2b92dfce | 9103 | while ((isALNUM(*s) || *s == ':') && d < e) |
a0ed51b3 | 9104 | *d++ = *s++; |
2b92dfce | 9105 | if (d >= e) |
cea2e8a9 | 9106 | Perl_croak(aTHX_ ident_too_long); |
a0ed51b3 | 9107 | } |
79072805 | 9108 | *d = '\0'; |
c35e046a AL |
9109 | while (s < send && SPACE_OR_TAB(*s)) |
9110 | s++; | |
ff68c719 | 9111 | if ((*s == '[' || (*s == '{' && strNE(dest, "sub")))) { |
5458a98a | 9112 | if (ckWARN(WARN_AMBIGUOUS) && keyword(dest, d - dest, 0)) { |
10edeb5d JH |
9113 | const char * const brack = |
9114 | (const char *) | |
9115 | ((*s == '[') ? "[...]" : "{...}"); | |
e850844c | 9116 | /* diag_listed_as: Ambiguous use of %c{%s[...]} resolved to %c%s[...] */ |
9014280d | 9117 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
599cee73 | 9118 | "Ambiguous use of %c{%s%s} resolved to %c%s%s", |
748a9306 LW |
9119 | funny, dest, brack, funny, dest, brack); |
9120 | } | |
79072805 | 9121 | bracket++; |
a0be28da | 9122 | PL_lex_brackstack[PL_lex_brackets++] = (char)(XOPERATOR | XFAKEBRACK); |
78cdf107 | 9123 | PL_lex_allbrackets++; |
79072805 LW |
9124 | return s; |
9125 | } | |
4e553d73 NIS |
9126 | } |
9127 | /* Handle extended ${^Foo} variables | |
2b92dfce GS |
9128 | * 1999-02-27 mjd-perl-patch@plover.com */ |
9129 | else if (!isALNUM(*d) && !isPRINT(*d) /* isCTRL(d) */ | |
9130 | && isALNUM(*s)) | |
9131 | { | |
9132 | d++; | |
9133 | while (isALNUM(*s) && d < e) { | |
9134 | *d++ = *s++; | |
9135 | } | |
9136 | if (d >= e) | |
cea2e8a9 | 9137 | Perl_croak(aTHX_ ident_too_long); |
2b92dfce | 9138 | *d = '\0'; |
79072805 LW |
9139 | } |
9140 | if (*s == '}') { | |
9141 | s++; | |
7df0d042 | 9142 | if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets) { |
3280af22 | 9143 | PL_lex_state = LEX_INTERPEND; |
7df0d042 AE |
9144 | PL_expect = XREF; |
9145 | } | |
d008e5eb | 9146 | if (PL_lex_state == LEX_NORMAL) { |
d008e5eb | 9147 | if (ckWARN(WARN_AMBIGUOUS) && |
780a5241 | 9148 | (keyword(dest, d - dest, 0) |
5c66c3dd | 9149 | || get_cvn_flags(dest, d - dest, UTF ? SVf_UTF8 : 0))) |
d008e5eb | 9150 | { |
5c66c3dd BF |
9151 | SV *tmp = newSVpvn_flags( dest, d - dest, |
9152 | SVs_TEMP | (UTF ? SVf_UTF8 : 0) ); | |
c35e046a AL |
9153 | if (funny == '#') |
9154 | funny = '@'; | |
9014280d | 9155 | Perl_warner(aTHX_ packWARN(WARN_AMBIGUOUS), |
5c66c3dd BF |
9156 | "Ambiguous use of %c{%"SVf"} resolved to %c%"SVf, |
9157 | funny, tmp, funny, tmp); | |
d008e5eb GS |
9158 | } |
9159 | } | |
79072805 LW |
9160 | } |
9161 | else { | |
9162 | s = bracket; /* let the parser handle it */ | |
93a17b20 | 9163 | *dest = '\0'; |
79072805 LW |
9164 | } |
9165 | } | |
3280af22 NIS |
9166 | else if (PL_lex_state == LEX_INTERPNORMAL && !PL_lex_brackets && !intuit_more(s)) |
9167 | PL_lex_state = LEX_INTERPEND; | |
378cc40b LW |
9168 | return s; |
9169 | } | |
9170 | ||
858a358b | 9171 | static bool |
3955e1a9 | 9172 | S_pmflag(pTHX_ const char* const valid_flags, U32 * pmfl, char** s, char* charset) { |
858a358b KW |
9173 | |
9174 | /* Adds, subtracts to/from 'pmfl' based on regex modifier flags found in | |
9175 | * the parse starting at 's', based on the subset that are valid in this | |
9176 | * context input to this routine in 'valid_flags'. Advances s. Returns | |
96f3bfda KW |
9177 | * TRUE if the input should be treated as a valid flag, so the next char |
9178 | * may be as well; otherwise FALSE. 'charset' should point to a NUL upon | |
9179 | * first call on the current regex. This routine will set it to any | |
9180 | * charset modifier found. The caller shouldn't change it. This way, | |
9181 | * another charset modifier encountered in the parse can be detected as an | |
9182 | * error, as we have decided to allow only one */ | |
858a358b KW |
9183 | |
9184 | const char c = **s; | |
84159251 | 9185 | STRLEN charlen = UTF ? UTF8SKIP(*s) : 1; |
94b03d7d | 9186 | |
84159251 BF |
9187 | if ( charlen != 1 || ! strchr(valid_flags, c) ) { |
9188 | if (isALNUM_lazy_if(*s, UTF)) { | |
4f8dbb2d | 9189 | yyerror_pv(Perl_form(aTHX_ "Unknown regexp modifier \"/%.*s\"", (int)charlen, *s), |
84159251 BF |
9190 | UTF ? SVf_UTF8 : 0); |
9191 | (*s) += charlen; | |
96f3bfda KW |
9192 | /* Pretend that it worked, so will continue processing before |
9193 | * dieing */ | |
0da72d5e | 9194 | return TRUE; |
858a358b KW |
9195 | } |
9196 | return FALSE; | |
9197 | } | |
9198 | ||
9199 | switch (c) { | |
94b03d7d | 9200 | |
858a358b KW |
9201 | CASE_STD_PMMOD_FLAGS_PARSE_SET(pmfl); |
9202 | case GLOBAL_PAT_MOD: *pmfl |= PMf_GLOBAL; break; | |
9203 | case CONTINUE_PAT_MOD: *pmfl |= PMf_CONTINUE; break; | |
9204 | case ONCE_PAT_MOD: *pmfl |= PMf_KEEP; break; | |
9205 | case KEEPCOPY_PAT_MOD: *pmfl |= RXf_PMf_KEEPCOPY; break; | |
9206 | case NONDESTRUCT_PAT_MOD: *pmfl |= PMf_NONDESTRUCT; break; | |
94b03d7d | 9207 | case LOCALE_PAT_MOD: |
3955e1a9 KW |
9208 | if (*charset) { |
9209 | goto multiple_charsets; | |
9210 | } | |
94b03d7d | 9211 | set_regex_charset(pmfl, REGEX_LOCALE_CHARSET); |
3955e1a9 | 9212 | *charset = c; |
94b03d7d KW |
9213 | break; |
9214 | case UNICODE_PAT_MOD: | |
3955e1a9 KW |
9215 | if (*charset) { |
9216 | goto multiple_charsets; | |
9217 | } | |
94b03d7d | 9218 | set_regex_charset(pmfl, REGEX_UNICODE_CHARSET); |
3955e1a9 | 9219 | *charset = c; |
94b03d7d KW |
9220 | break; |
9221 | case ASCII_RESTRICT_PAT_MOD: | |
ff3f26d2 | 9222 | if (! *charset) { |
94b03d7d KW |
9223 | set_regex_charset(pmfl, REGEX_ASCII_RESTRICTED_CHARSET); |
9224 | } | |
ff3f26d2 KW |
9225 | else { |
9226 | ||
9227 | /* Error if previous modifier wasn't an 'a', but if it was, see | |
9228 | * if, and accept, a second occurrence (only) */ | |
9229 | if (*charset != 'a' | |
9230 | || get_regex_charset(*pmfl) | |
9231 | != REGEX_ASCII_RESTRICTED_CHARSET) | |
9232 | { | |
9233 | goto multiple_charsets; | |
9234 | } | |
9235 | set_regex_charset(pmfl, REGEX_ASCII_MORE_RESTRICTED_CHARSET); | |
3955e1a9 KW |
9236 | } |
9237 | *charset = c; | |
94b03d7d KW |
9238 | break; |
9239 | case DEPENDS_PAT_MOD: | |
3955e1a9 KW |
9240 | if (*charset) { |
9241 | goto multiple_charsets; | |
9242 | } | |
94b03d7d | 9243 | set_regex_charset(pmfl, REGEX_DEPENDS_CHARSET); |
3955e1a9 | 9244 | *charset = c; |
94b03d7d | 9245 | break; |
879d0c72 | 9246 | } |
94b03d7d | 9247 | |
858a358b KW |
9248 | (*s)++; |
9249 | return TRUE; | |
94b03d7d | 9250 | |
3955e1a9 KW |
9251 | multiple_charsets: |
9252 | if (*charset != c) { | |
9253 | yyerror(Perl_form(aTHX_ "Regexp modifiers \"/%c\" and \"/%c\" are mutually exclusive", *charset, c)); | |
9254 | } | |
ff3f26d2 KW |
9255 | else if (c == 'a') { |
9256 | yyerror("Regexp modifier \"/a\" may appear a maximum of twice"); | |
9257 | } | |
3955e1a9 KW |
9258 | else { |
9259 | yyerror(Perl_form(aTHX_ "Regexp modifier \"/%c\" may not appear twice", c)); | |
9260 | } | |
9261 | ||
9262 | /* Pretend that it worked, so will continue processing before dieing */ | |
9263 | (*s)++; | |
9264 | return TRUE; | |
879d0c72 NC |
9265 | } |
9266 | ||
76e3520e | 9267 | STATIC char * |
cea2e8a9 | 9268 | S_scan_pat(pTHX_ char *start, I32 type) |
378cc40b | 9269 | { |
97aff369 | 9270 | dVAR; |
79072805 | 9271 | PMOP *pm; |
d24ca0c5 | 9272 | char *s = scan_str(start,!!PL_madskills,FALSE, PL_reg_state.re_reparsing); |
10edeb5d | 9273 | const char * const valid_flags = |
a20207d7 | 9274 | (const char *)((type == OP_QR) ? QR_PAT_MODS : M_PAT_MODS); |
3955e1a9 | 9275 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
9276 | #ifdef PERL_MAD |
9277 | char *modstart; | |
9278 | #endif | |
9279 | ||
7918f24d | 9280 | PERL_ARGS_ASSERT_SCAN_PAT; |
378cc40b | 9281 | |
d24ca0c5 DM |
9282 | /* this was only needed for the initial scan_str; set it to false |
9283 | * so that any (?{}) code blocks etc are parsed normally */ | |
9284 | PL_reg_state.re_reparsing = FALSE; | |
25c09cbf | 9285 | if (!s) { |
6136c704 | 9286 | const char * const delimiter = skipspace(start); |
10edeb5d JH |
9287 | Perl_croak(aTHX_ |
9288 | (const char *) | |
9289 | (*delimiter == '?' | |
9290 | ? "Search pattern not terminated or ternary operator parsed as search pattern" | |
9291 | : "Search pattern not terminated" )); | |
25c09cbf | 9292 | } |
bbce6d69 | 9293 | |
8782bef2 | 9294 | pm = (PMOP*)newPMOP(type, 0); |
ad639bfb NC |
9295 | if (PL_multi_open == '?') { |
9296 | /* This is the only point in the code that sets PMf_ONCE: */ | |
79072805 | 9297 | pm->op_pmflags |= PMf_ONCE; |
ad639bfb NC |
9298 | |
9299 | /* Hence it's safe to do this bit of PMOP book-keeping here, which | |
9300 | allows us to restrict the list needed by reset to just the ?? | |
9301 | matches. */ | |
9302 | assert(type != OP_TRANS); | |
9303 | if (PL_curstash) { | |
daba3364 | 9304 | MAGIC *mg = mg_find((const SV *)PL_curstash, PERL_MAGIC_symtab); |
ad639bfb NC |
9305 | U32 elements; |
9306 | if (!mg) { | |
daba3364 | 9307 | mg = sv_magicext(MUTABLE_SV(PL_curstash), 0, PERL_MAGIC_symtab, 0, 0, |
ad639bfb NC |
9308 | 0); |
9309 | } | |
9310 | elements = mg->mg_len / sizeof(PMOP**); | |
9311 | Renewc(mg->mg_ptr, elements + 1, PMOP*, char); | |
9312 | ((PMOP**)mg->mg_ptr) [elements++] = pm; | |
9313 | mg->mg_len = elements * sizeof(PMOP**); | |
9314 | PmopSTASH_set(pm,PL_curstash); | |
9315 | } | |
9316 | } | |
5db06880 NC |
9317 | #ifdef PERL_MAD |
9318 | modstart = s; | |
9319 | #endif | |
d63c20f2 DM |
9320 | |
9321 | /* if qr/...(?{..}).../, then need to parse the pattern within a new | |
9322 | * anon CV. False positives like qr/[(?{]/ are harmless */ | |
9323 | ||
9324 | if (type == OP_QR) { | |
6f635923 DM |
9325 | STRLEN len; |
9326 | char *e, *p = SvPV(PL_lex_stuff, len); | |
9327 | e = p + len; | |
9328 | for (; p < e; p++) { | |
d63c20f2 DM |
9329 | if (p[0] == '(' && p[1] == '?' |
9330 | && (p[2] == '{' || (p[2] == '?' && p[3] == '{'))) | |
9331 | { | |
9332 | pm->op_pmflags |= PMf_HAS_CV; | |
9333 | break; | |
9334 | } | |
9335 | } | |
6f635923 | 9336 | pm->op_pmflags |= PMf_IS_QR; |
d63c20f2 DM |
9337 | } |
9338 | ||
3955e1a9 | 9339 | while (*s && S_pmflag(aTHX_ valid_flags, &(pm->op_pmflags), &s, &charset)) {}; |
5db06880 NC |
9340 | #ifdef PERL_MAD |
9341 | if (PL_madskills && modstart != s) { | |
9342 | SV* tmptoken = newSVpvn(modstart, s - modstart); | |
9343 | append_madprops(newMADPROP('m', MAD_SV, tmptoken, 0), (OP*)pm, 0); | |
9344 | } | |
9345 | #endif | |
4ac733c9 | 9346 | /* issue a warning if /c is specified,but /g is not */ |
a2a5de95 | 9347 | if ((pm->op_pmflags & PMf_CONTINUE) && !(pm->op_pmflags & PMf_GLOBAL)) |
4ac733c9 | 9348 | { |
a2a5de95 NC |
9349 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), |
9350 | "Use of /c modifier is meaningless without /g" ); | |
4ac733c9 MJD |
9351 | } |
9352 | ||
3280af22 | 9353 | PL_lex_op = (OP*)pm; |
6154021b | 9354 | pl_yylval.ival = OP_MATCH; |
378cc40b LW |
9355 | return s; |
9356 | } | |
9357 | ||
76e3520e | 9358 | STATIC char * |
cea2e8a9 | 9359 | S_scan_subst(pTHX_ char *start) |
79072805 | 9360 | { |
27da23d5 | 9361 | dVAR; |
22594288 | 9362 | char *s; |
eb578fdb | 9363 | PMOP *pm; |
4fdae800 | 9364 | I32 first_start; |
79072805 | 9365 | I32 es = 0; |
3955e1a9 | 9366 | char charset = '\0'; /* character set modifier */ |
5db06880 NC |
9367 | #ifdef PERL_MAD |
9368 | char *modstart; | |
9369 | #endif | |
79072805 | 9370 | |
7918f24d NC |
9371 | PERL_ARGS_ASSERT_SCAN_SUBST; |
9372 | ||
6154021b | 9373 | pl_yylval.ival = OP_NULL; |
79072805 | 9374 | |
d24ca0c5 | 9375 | s = scan_str(start,!!PL_madskills,FALSE,FALSE); |
79072805 | 9376 | |
37fd879b | 9377 | if (!s) |
cea2e8a9 | 9378 | Perl_croak(aTHX_ "Substitution pattern not terminated"); |
79072805 | 9379 | |
3280af22 | 9380 | if (s[-1] == PL_multi_open) |
79072805 | 9381 | s--; |
5db06880 NC |
9382 | #ifdef PERL_MAD |
9383 | if (PL_madskills) { | |
cd81e915 NC |
9384 | CURMAD('q', PL_thisopen); |
9385 | CURMAD('_', PL_thiswhite); | |
9386 | CURMAD('E', PL_thisstuff); | |
9387 | CURMAD('Q', PL_thisclose); | |
9388 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9389 | } |
9390 | #endif | |
79072805 | 9391 | |
3280af22 | 9392 | first_start = PL_multi_start; |
d24ca0c5 | 9393 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
79072805 | 9394 | if (!s) { |
37fd879b | 9395 | if (PL_lex_stuff) { |
3280af22 | 9396 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9397 | PL_lex_stuff = NULL; |
37fd879b | 9398 | } |
cea2e8a9 | 9399 | Perl_croak(aTHX_ "Substitution replacement not terminated"); |
a687059c | 9400 | } |
3280af22 | 9401 | PL_multi_start = first_start; /* so whole substitution is taken together */ |
2f3197b3 | 9402 | |
79072805 | 9403 | pm = (PMOP*)newPMOP(OP_SUBST, 0); |
5db06880 NC |
9404 | |
9405 | #ifdef PERL_MAD | |
9406 | if (PL_madskills) { | |
cd81e915 NC |
9407 | CURMAD('z', PL_thisopen); |
9408 | CURMAD('R', PL_thisstuff); | |
9409 | CURMAD('Z', PL_thisclose); | |
5db06880 NC |
9410 | } |
9411 | modstart = s; | |
9412 | #endif | |
9413 | ||
48c036b1 | 9414 | while (*s) { |
a20207d7 | 9415 | if (*s == EXEC_PAT_MOD) { |
a687059c | 9416 | s++; |
2f3197b3 | 9417 | es++; |
a687059c | 9418 | } |
3955e1a9 KW |
9419 | else if (! S_pmflag(aTHX_ S_PAT_MODS, &(pm->op_pmflags), &s, &charset)) |
9420 | { | |
48c036b1 | 9421 | break; |
aa78b661 | 9422 | } |
378cc40b | 9423 | } |
79072805 | 9424 | |
5db06880 NC |
9425 | #ifdef PERL_MAD |
9426 | if (PL_madskills) { | |
9427 | if (modstart != s) | |
9428 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9429 | append_madprops(PL_thismad, (OP*)pm, 0); |
9430 | PL_thismad = 0; | |
5db06880 NC |
9431 | } |
9432 | #endif | |
a2a5de95 NC |
9433 | if ((pm->op_pmflags & PMf_CONTINUE)) { |
9434 | Perl_ck_warner(aTHX_ packWARN(WARN_REGEXP), "Use of /c modifier is meaningless in s///" ); | |
4ac733c9 MJD |
9435 | } |
9436 | ||
79072805 | 9437 | if (es) { |
6136c704 AL |
9438 | SV * const repl = newSVpvs(""); |
9439 | ||
0244c3a4 | 9440 | PL_multi_end = 0; |
79072805 | 9441 | pm->op_pmflags |= PMf_EVAL; |
a5849ce5 NC |
9442 | while (es-- > 0) { |
9443 | if (es) | |
9444 | sv_catpvs(repl, "eval "); | |
9445 | else | |
9446 | sv_catpvs(repl, "do "); | |
9447 | } | |
6f43d98f | 9448 | sv_catpvs(repl, "{"); |
7cc34111 | 9449 | sv_catsv(repl, PL_sublex_info.repl); |
9badc361 | 9450 | sv_catpvs(repl, "}"); |
25da4f38 | 9451 | SvEVALED_on(repl); |
7cc34111 FC |
9452 | SvREFCNT_dec(PL_sublex_info.repl); |
9453 | PL_sublex_info.repl = repl; | |
378cc40b | 9454 | } |
79072805 | 9455 | |
3280af22 | 9456 | PL_lex_op = (OP*)pm; |
6154021b | 9457 | pl_yylval.ival = OP_SUBST; |
378cc40b LW |
9458 | return s; |
9459 | } | |
9460 | ||
76e3520e | 9461 | STATIC char * |
cea2e8a9 | 9462 | S_scan_trans(pTHX_ char *start) |
378cc40b | 9463 | { |
97aff369 | 9464 | dVAR; |
eb578fdb | 9465 | char* s; |
11343788 | 9466 | OP *o; |
b84c11c8 NC |
9467 | U8 squash; |
9468 | U8 del; | |
9469 | U8 complement; | |
bb16bae8 | 9470 | bool nondestruct = 0; |
5db06880 NC |
9471 | #ifdef PERL_MAD |
9472 | char *modstart; | |
9473 | #endif | |
79072805 | 9474 | |
7918f24d NC |
9475 | PERL_ARGS_ASSERT_SCAN_TRANS; |
9476 | ||
6154021b | 9477 | pl_yylval.ival = OP_NULL; |
79072805 | 9478 | |
d24ca0c5 | 9479 | s = scan_str(start,!!PL_madskills,FALSE,FALSE); |
37fd879b | 9480 | if (!s) |
cea2e8a9 | 9481 | Perl_croak(aTHX_ "Transliteration pattern not terminated"); |
5db06880 | 9482 | |
3280af22 | 9483 | if (s[-1] == PL_multi_open) |
2f3197b3 | 9484 | s--; |
5db06880 NC |
9485 | #ifdef PERL_MAD |
9486 | if (PL_madskills) { | |
cd81e915 NC |
9487 | CURMAD('q', PL_thisopen); |
9488 | CURMAD('_', PL_thiswhite); | |
9489 | CURMAD('E', PL_thisstuff); | |
9490 | CURMAD('Q', PL_thisclose); | |
9491 | PL_realtokenstart = s - SvPVX(PL_linestr); | |
5db06880 NC |
9492 | } |
9493 | #endif | |
2f3197b3 | 9494 | |
d24ca0c5 | 9495 | s = scan_str(s,!!PL_madskills,FALSE,FALSE); |
79072805 | 9496 | if (!s) { |
37fd879b | 9497 | if (PL_lex_stuff) { |
3280af22 | 9498 | SvREFCNT_dec(PL_lex_stuff); |
a0714e2c | 9499 | PL_lex_stuff = NULL; |
37fd879b | 9500 | } |
cea2e8a9 | 9501 | Perl_croak(aTHX_ "Transliteration replacement not terminated"); |
a687059c | 9502 | } |
5db06880 | 9503 | if (PL_madskills) { |
cd81e915 NC |
9504 | CURMAD('z', PL_thisopen); |
9505 | CURMAD('R', PL_thisstuff); | |
9506 | CURMAD('Z', PL_thisclose); | |
5db06880 | 9507 | } |
79072805 | 9508 | |
a0ed51b3 | 9509 | complement = del = squash = 0; |
5db06880 NC |
9510 | #ifdef PERL_MAD |
9511 | modstart = s; | |
9512 | #endif | |
7a1e2023 NC |
9513 | while (1) { |
9514 | switch (*s) { | |
9515 | case 'c': | |
79072805 | 9516 | complement = OPpTRANS_COMPLEMENT; |
7a1e2023 NC |
9517 | break; |
9518 | case 'd': | |
a0ed51b3 | 9519 | del = OPpTRANS_DELETE; |
7a1e2023 NC |
9520 | break; |
9521 | case 's': | |
79072805 | 9522 | squash = OPpTRANS_SQUASH; |
7a1e2023 | 9523 | break; |
bb16bae8 FC |
9524 | case 'r': |
9525 | nondestruct = 1; | |
9526 | break; | |
7a1e2023 NC |
9527 | default: |
9528 | goto no_more; | |
9529 | } | |
395c3793 LW |
9530 | s++; |
9531 | } | |
7a1e2023 | 9532 | no_more: |
8973db79 | 9533 | |
9100eeb1 | 9534 | o = newPVOP(nondestruct ? OP_TRANSR : OP_TRANS, 0, (char*)NULL); |
59f00321 RGS |
9535 | o->op_private &= ~OPpTRANS_ALL; |
9536 | o->op_private |= del|squash|complement| | |
7948272d | 9537 | (DO_UTF8(PL_lex_stuff)? OPpTRANS_FROM_UTF : 0)| |
7cc34111 | 9538 | (DO_UTF8(PL_sublex_info.repl) ? OPpTRANS_TO_UTF : 0); |
79072805 | 9539 | |
3280af22 | 9540 | PL_lex_op = o; |
bb16bae8 | 9541 | pl_yylval.ival = nondestruct ? OP_TRANSR : OP_TRANS; |
5db06880 NC |
9542 | |
9543 | #ifdef PERL_MAD | |
9544 | if (PL_madskills) { | |
9545 | if (modstart != s) | |
9546 | curmad('m', newSVpvn(modstart, s - modstart)); | |
cd81e915 NC |
9547 | append_madprops(PL_thismad, o, 0); |
9548 | PL_thismad = 0; | |
5db06880 NC |
9549 | } |
9550 | #endif | |
9551 | ||
79072805 LW |
9552 | return s; |
9553 | } | |
9554 | ||
5097bf9b FC |
9555 | /* scan_heredoc |
9556 | Takes a pointer to the first < in <<FOO. | |
9557 | Returns a pointer to the byte following <<FOO. | |
9558 | ||
9559 | This function scans a heredoc, which involves different methods | |
9560 | depending on whether we are in a string eval, quoted construct, etc. | |
9561 | This is because PL_linestr could containing a single line of input, or | |
9562 | a whole string being evalled, or the contents of the current quote- | |
9563 | like operator. | |
9564 | ||
19bbc0d7 FC |
9565 | The two basic methods are: |
9566 | - Steal lines from the input stream | |
9567 | - Scan the heredoc in PL_linestr and remove it therefrom | |
9568 | ||
9569 | In a file scope or filtered eval, the first method is used; in a | |
9570 | string eval, the second. | |
9571 | ||
9572 | In a quote-like operator, we have to choose between the two, | |
9573 | depending on where we can find a newline. We peek into outer lex- | |
9574 | ing scopes until we find one with a newline in it. If we reach the | |
9575 | outermost lexing scope and it is a file, we use the stream method. | |
9576 | Otherwise it is treated as an eval. | |
5097bf9b FC |
9577 | */ |
9578 | ||
76e3520e | 9579 | STATIC char * |
cea2e8a9 | 9580 | S_scan_heredoc(pTHX_ register char *s) |
79072805 | 9581 | { |
97aff369 | 9582 | dVAR; |
79072805 LW |
9583 | I32 op_type = OP_SCALAR; |
9584 | I32 len; | |
9585 | SV *tmpstr; | |
9586 | char term; | |
eb578fdb KW |
9587 | char *d; |
9588 | char *e; | |
4633a7c4 | 9589 | char *peek; |
5097bf9b | 9590 | const bool infile = PL_rsfp || PL_parser->filtered; |
78a635de | 9591 | LEXSHARED *shared = PL_parser->lex_shared; |
5db06880 NC |
9592 | #ifdef PERL_MAD |
9593 | I32 stuffstart = s - SvPVX(PL_linestr); | |
9594 | char *tstart; | |
9595 | ||
cd81e915 | 9596 | PL_realtokenstart = -1; |
5db06880 | 9597 | #endif |
79072805 | 9598 | |
7918f24d NC |
9599 | PERL_ARGS_ASSERT_SCAN_HEREDOC; |
9600 | ||
79072805 | 9601 | s += 2; |
5097bf9b | 9602 | d = PL_tokenbuf + 1; |
3280af22 | 9603 | e = PL_tokenbuf + sizeof PL_tokenbuf - 1; |
5097bf9b | 9604 | *PL_tokenbuf = '\n'; |
c35e046a AL |
9605 | peek = s; |
9606 | while (SPACE_OR_TAB(*peek)) | |
9607 | peek++; | |
3792a11b | 9608 | if (*peek == '`' || *peek == '\'' || *peek =='"') { |
4633a7c4 | 9609 | s = peek; |
79072805 | 9610 | term = *s++; |
3280af22 | 9611 | s = delimcpy(d, e, s, PL_bufend, term, &len); |
6f2d7fc9 FC |
9612 | if (s == PL_bufend) |
9613 | Perl_croak(aTHX_ "Unterminated delimiter for here document"); | |
fc36a67e | 9614 | d += len; |
6f2d7fc9 | 9615 | s++; |
79072805 LW |
9616 | } |
9617 | else { | |
9618 | if (*s == '\\') | |
458391bd | 9619 | /* <<\FOO is equivalent to <<'FOO' */ |
79072805 LW |
9620 | s++, term = '\''; |
9621 | else | |
9622 | term = '"'; | |
7e2040f0 | 9623 | if (!isALNUM_lazy_if(s,UTF)) |
8ab8f082 | 9624 | deprecate("bare << to mean <<\"\""); |
7e2040f0 | 9625 | for (; isALNUM_lazy_if(s,UTF); s++) { |
fc36a67e | 9626 | if (d < e) |
9627 | *d++ = *s; | |
9628 | } | |
9629 | } | |
3280af22 | 9630 | if (d >= PL_tokenbuf + sizeof PL_tokenbuf - 1) |
cea2e8a9 | 9631 | Perl_croak(aTHX_ "Delimiter for here document is too long"); |
79072805 LW |
9632 | *d++ = '\n'; |
9633 | *d = '\0'; | |
3280af22 | 9634 | len = d - PL_tokenbuf; |
5db06880 NC |
9635 | |
9636 | #ifdef PERL_MAD | |
9637 | if (PL_madskills) { | |
5097bf9b FC |
9638 | tstart = PL_tokenbuf + 1; |
9639 | PL_thisclose = newSVpvn(tstart, len - 1); | |
5db06880 | 9640 | tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 | 9641 | PL_thisopen = newSVpvn(tstart, s - tstart); |
5db06880 NC |
9642 | stuffstart = s - SvPVX(PL_linestr); |
9643 | } | |
9644 | #endif | |
6a27c188 | 9645 | #ifndef PERL_STRICT_CR |
f63a84b2 LW |
9646 | d = strchr(s, '\r'); |
9647 | if (d) { | |
b464bac0 | 9648 | char * const olds = s; |
f63a84b2 | 9649 | s = d; |
3280af22 | 9650 | while (s < PL_bufend) { |
f63a84b2 LW |
9651 | if (*s == '\r') { |
9652 | *d++ = '\n'; | |
9653 | if (*++s == '\n') | |
9654 | s++; | |
9655 | } | |
9656 | else if (*s == '\n' && s[1] == '\r') { /* \015\013 on a mac? */ | |
9657 | *d++ = *s++; | |
9658 | s++; | |
9659 | } | |
9660 | else | |
9661 | *d++ = *s++; | |
9662 | } | |
9663 | *d = '\0'; | |
3280af22 | 9664 | PL_bufend = d; |
95a20fc0 | 9665 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 LW |
9666 | s = olds; |
9667 | } | |
9668 | #endif | |
5db06880 NC |
9669 | #ifdef PERL_MAD |
9670 | if (PL_madskills) { | |
9671 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9672 | if (PL_thisstuff) |
9673 | sv_catpvn(PL_thisstuff, tstart, s - tstart); | |
5db06880 | 9674 | else |
cd81e915 | 9675 | PL_thisstuff = newSVpvn(tstart, s - tstart); |
5db06880 | 9676 | } |
748a9306 | 9677 | |
5db06880 | 9678 | stuffstart = s - SvPVX(PL_linestr); |
5db06880 NC |
9679 | #endif |
9680 | ||
7d0a29fe NC |
9681 | tmpstr = newSV_type(SVt_PVIV); |
9682 | SvGROW(tmpstr, 80); | |
748a9306 | 9683 | if (term == '\'') { |
79072805 | 9684 | op_type = OP_CONST; |
45977657 | 9685 | SvIV_set(tmpstr, -1); |
748a9306 LW |
9686 | } |
9687 | else if (term == '`') { | |
79072805 | 9688 | op_type = OP_BACKTICK; |
45977657 | 9689 | SvIV_set(tmpstr, '\\'); |
748a9306 | 9690 | } |
79072805 | 9691 | |
78a635de | 9692 | PL_multi_start = CopLINE(PL_curcop) + 1; |
3280af22 | 9693 | PL_multi_open = PL_multi_close = '<'; |
19bbc0d7 | 9694 | /* inside a string eval or quote-like operator */ |
4efe39d2 | 9695 | if (!infile || PL_lex_inwhat) { |
60f40a38 | 9696 | SV *linestr; |
3526bd3e | 9697 | char *bufend; |
074b1c59 | 9698 | char * const olds = s; |
d37427bc | 9699 | PERL_CONTEXT * const cx = &cxstack[cxstack_ix]; |
19bbc0d7 FC |
9700 | /* These two fields are not set until an inner lexing scope is |
9701 | entered. But we need them set here. */ | |
4efe39d2 FC |
9702 | shared->ls_bufptr = s; |
9703 | shared->ls_linestr = PL_linestr; | |
9704 | if (PL_lex_inwhat) | |
9705 | /* Look for a newline. If the current buffer does not have one, | |
9706 | peek into the line buffer of the parent lexing scope, going | |
9707 | up as many levels as necessary to find one with a newline | |
9708 | after bufptr. | |
9709 | */ | |
9710 | while (!(s = (char *)memchr( | |
9711 | (void *)shared->ls_bufptr, '\n', | |
9712 | SvEND(shared->ls_linestr)-shared->ls_bufptr | |
9713 | ))) { | |
60f40a38 | 9714 | shared = shared->ls_prev; |
f68f7dc1 FC |
9715 | /* shared is only null if we have gone beyond the outermost |
9716 | lexing scope. In a file, we will have broken out of the | |
9717 | loop in the previous iteration. In an eval, the string buf- | |
9718 | fer ends with "\n;", so the while condition below will have | |
9719 | evaluated to false. So shared can never be null. */ | |
9720 | assert(shared); | |
60f40a38 FC |
9721 | /* A LEXSHARED struct with a null ls_prev pointer is the outer- |
9722 | most lexing scope. In a file, shared->ls_linestr at that | |
9723 | level is just one line, so there is no body to steal. */ | |
9724 | if (infile && !shared->ls_prev) { | |
074b1c59 | 9725 | s = olds; |
99bd9d90 FC |
9726 | goto streaming; |
9727 | } | |
4efe39d2 FC |
9728 | } |
9729 | else { /* eval */ | |
9730 | s = (char*)memchr((void*)s, '\n', PL_bufend - s); | |
9731 | assert(s); | |
9732 | } | |
60f40a38 FC |
9733 | linestr = shared->ls_linestr; |
9734 | bufend = SvEND(linestr); | |
0244c3a4 GS |
9735 | d = s; |
9736 | while (s < bufend && | |
5bd13da3 | 9737 | (*s != '\n' || memNE(s,PL_tokenbuf,len)) ) { |
0244c3a4 | 9738 | if (*s++ == '\n') |
78a635de | 9739 | ++shared->herelines; |
0244c3a4 GS |
9740 | } |
9741 | if (s >= bufend) { | |
932d0cf1 | 9742 | goto interminable; |
0244c3a4 | 9743 | } |
3328ab5a | 9744 | sv_setpvn(tmpstr,d+1,s-d); |
5db06880 NC |
9745 | #ifdef PERL_MAD |
9746 | if (PL_madskills) { | |
cd81e915 NC |
9747 | if (PL_thisstuff) |
9748 | sv_catpvn(PL_thisstuff, d + 1, s - d); | |
5db06880 | 9749 | else |
cd81e915 | 9750 | PL_thisstuff = newSVpvn(d + 1, s - d); |
5db06880 NC |
9751 | stuffstart = s - SvPVX(PL_linestr); |
9752 | } | |
9753 | #endif | |
79072805 | 9754 | s += len - 1; |
d794b522 | 9755 | /* the preceding stmt passes a newline */ |
78a635de | 9756 | shared->herelines++; |
49d8d3a1 | 9757 | |
db444266 FC |
9758 | /* s now points to the newline after the heredoc terminator. |
9759 | d points to the newline before the body of the heredoc. | |
9760 | */ | |
19bbc0d7 FC |
9761 | |
9762 | /* We are going to modify linestr in place here, so set | |
9763 | aside copies of the string if necessary for re-evals or | |
9764 | (caller $n)[6]. */ | |
a91428a4 | 9765 | /* See the Paranoia note in case LEX_INTERPEND in yylex, for why we |
3328ab5a FC |
9766 | check shared->re_eval_str. */ |
9767 | if (shared->re_eval_start || shared->re_eval_str) { | |
db444266 | 9768 | /* Set aside the rest of the regexp */ |
3328ab5a FC |
9769 | if (!shared->re_eval_str) |
9770 | shared->re_eval_str = | |
9771 | newSVpvn(shared->re_eval_start, | |
4efe39d2 | 9772 | bufend - shared->re_eval_start); |
3328ab5a | 9773 | shared->re_eval_start -= s-d; |
db444266 | 9774 | } |
d37427bc | 9775 | if (CxTYPE(cx) == CXt_EVAL && CxOLD_OP_TYPE(cx) == OP_ENTEREVAL |
4efe39d2 FC |
9776 | && cx->blk_eval.cur_text == linestr) { |
9777 | cx->blk_eval.cur_text = newSVsv(linestr); | |
d37427bc FC |
9778 | SvSCREAM_on(cx->blk_eval.cur_text); |
9779 | } | |
db444266 | 9780 | /* Copy everything from s onwards back to d. */ |
4efe39d2 FC |
9781 | Move(s,d,bufend-s + 1,char); |
9782 | SvCUR_set(linestr, SvCUR(linestr) - (s-d)); | |
19bbc0d7 FC |
9783 | /* Setting PL_bufend only applies when we have not dug deeper |
9784 | into other scopes, because sublex_done sets PL_bufend to | |
9785 | SvEND(PL_linestr). */ | |
4efe39d2 | 9786 | if (shared == PL_parser->lex_shared) PL_bufend = SvEND(linestr); |
db444266 | 9787 | s = olds; |
79072805 LW |
9788 | } |
9789 | else | |
a7922135 | 9790 | { |
3328ab5a | 9791 | SV *linestr_save; |
a7922135 FC |
9792 | streaming: |
9793 | sv_setpvs(tmpstr,""); /* avoid "uninitialized" warning */ | |
9794 | term = PL_tokenbuf[1]; | |
9795 | len--; | |
3328ab5a | 9796 | linestr_save = PL_linestr; /* must restore this afterwards */ |
074b1c59 | 9797 | d = s; /* and this */ |
3328ab5a | 9798 | PL_linestr = newSVpvs(""); |
074b1c59 FC |
9799 | PL_bufend = SvPVX(PL_linestr); |
9800 | while (1) { | |
5db06880 NC |
9801 | #ifdef PERL_MAD |
9802 | if (PL_madskills) { | |
9803 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
9804 | if (PL_thisstuff) |
9805 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 9806 | else |
cd81e915 | 9807 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
9808 | } |
9809 | #endif | |
074b1c59 | 9810 | PL_bufptr = PL_bufend; |
d794b522 | 9811 | CopLINE_set(PL_curcop, |
78a635de | 9812 | PL_multi_start + shared->herelines); |
112d1284 FC |
9813 | if (!lex_next_chunk(LEX_NO_TERM) |
9814 | && (!SvCUR(tmpstr) || SvEND(tmpstr)[-1] != '\n')) { | |
3328ab5a | 9815 | SvREFCNT_dec(linestr_save); |
932d0cf1 | 9816 | goto interminable; |
79072805 | 9817 | } |
78a635de | 9818 | CopLINE_set(PL_curcop, (line_t)PL_multi_start - 1); |
112d1284 FC |
9819 | if (!SvCUR(PL_linestr) || PL_bufend[-1] != '\n') { |
9820 | lex_grow_linestr(SvCUR(PL_linestr) + 2); | |
9821 | sv_catpvs(PL_linestr, "\n\0"); | |
9822 | } | |
f0e67a1d | 9823 | s = PL_bufptr; |
5db06880 NC |
9824 | #ifdef PERL_MAD |
9825 | stuffstart = s - SvPVX(PL_linestr); | |
9826 | #endif | |
78a635de | 9827 | shared->herelines++; |
bd61b366 | 9828 | PL_last_lop = PL_last_uni = NULL; |
6a27c188 | 9829 | #ifndef PERL_STRICT_CR |
3280af22 | 9830 | if (PL_bufend - PL_linestart >= 2) { |
a1529941 NIS |
9831 | if ((PL_bufend[-2] == '\r' && PL_bufend[-1] == '\n') || |
9832 | (PL_bufend[-2] == '\n' && PL_bufend[-1] == '\r')) | |
c6f14548 | 9833 | { |
3280af22 NIS |
9834 | PL_bufend[-2] = '\n'; |
9835 | PL_bufend--; | |
95a20fc0 | 9836 | SvCUR_set(PL_linestr, PL_bufend - SvPVX_const(PL_linestr)); |
f63a84b2 | 9837 | } |
3280af22 NIS |
9838 | else if (PL_bufend[-1] == '\r') |
9839 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 9840 | } |
3280af22 NIS |
9841 | else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r') |
9842 | PL_bufend[-1] = '\n'; | |
f63a84b2 | 9843 | #endif |
5097bf9b | 9844 | if (*s == term && memEQ(s,PL_tokenbuf + 1,len)) { |
3328ab5a FC |
9845 | SvREFCNT_dec(PL_linestr); |
9846 | PL_linestr = linestr_save; | |
9847 | PL_linestart = SvPVX(linestr_save); | |
3280af22 | 9848 | PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr); |
3328ab5a | 9849 | s = d; |
074b1c59 | 9850 | break; |
79072805 LW |
9851 | } |
9852 | else { | |
3280af22 | 9853 | sv_catsv(tmpstr,PL_linestr); |
395c3793 | 9854 | } |
a7922135 | 9855 | } |
395c3793 | 9856 | } |
57843af0 | 9857 | PL_multi_end = CopLINE(PL_curcop); |
79072805 | 9858 | if (SvCUR(tmpstr) + 5 < SvLEN(tmpstr)) { |
1da4ca5f | 9859 | SvPV_shrink_to_cur(tmpstr); |
79072805 | 9860 | } |
2f31ce75 | 9861 | if (!IN_BYTES) { |
95a20fc0 | 9862 | if (UTF && is_utf8_string((U8*)SvPVX_const(tmpstr), SvCUR(tmpstr))) |
2f31ce75 JH |
9863 | SvUTF8_on(tmpstr); |
9864 | else if (PL_encoding) | |
9865 | sv_recode_to_utf8(tmpstr, PL_encoding); | |
9866 | } | |
3280af22 | 9867 | PL_lex_stuff = tmpstr; |
6154021b | 9868 | pl_yylval.ival = op_type; |
79072805 | 9869 | return s; |
932d0cf1 FC |
9870 | |
9871 | interminable: | |
932d0cf1 FC |
9872 | SvREFCNT_dec(tmpstr); |
9873 | CopLINE_set(PL_curcop, (line_t)PL_multi_start - 1); | |
9874 | missingterm(PL_tokenbuf + 1); | |
79072805 LW |
9875 | } |
9876 | ||
02aa26ce NT |
9877 | /* scan_inputsymbol |
9878 | takes: current position in input buffer | |
9879 | returns: new position in input buffer | |
6154021b | 9880 | side-effects: pl_yylval and lex_op are set. |
02aa26ce NT |
9881 | |
9882 | This code handles: | |
9883 | ||
9884 | <> read from ARGV | |
9885 | <FH> read from filehandle | |
9886 | <pkg::FH> read from package qualified filehandle | |
9887 | <pkg'FH> read from package qualified filehandle | |
9888 | <$fh> read from filehandle in $fh | |
9889 | <*.h> filename glob | |
9890 | ||
9891 | */ | |
9892 | ||
76e3520e | 9893 | STATIC char * |
cea2e8a9 | 9894 | S_scan_inputsymbol(pTHX_ char *start) |
79072805 | 9895 | { |
97aff369 | 9896 | dVAR; |
eb578fdb | 9897 | char *s = start; /* current position in buffer */ |
1b420867 | 9898 | char *end; |
79072805 | 9899 | I32 len; |
6136c704 AL |
9900 | char *d = PL_tokenbuf; /* start of temp holding space */ |
9901 | const char * const e = PL_tokenbuf + sizeof PL_tokenbuf; /* end of temp holding space */ | |
9902 | ||
7918f24d NC |
9903 | PERL_ARGS_ASSERT_SCAN_INPUTSYMBOL; |
9904 | ||
1b420867 GS |
9905 | end = strchr(s, '\n'); |
9906 | if (!end) | |
9907 | end = PL_bufend; | |
9908 | s = delimcpy(d, e, s + 1, end, '>', &len); /* extract until > */ | |
02aa26ce NT |
9909 | |
9910 | /* die if we didn't have space for the contents of the <>, | |
1b420867 | 9911 | or if it didn't end, or if we see a newline |
02aa26ce NT |
9912 | */ |
9913 | ||
bb7a0f54 | 9914 | if (len >= (I32)sizeof PL_tokenbuf) |
cea2e8a9 | 9915 | Perl_croak(aTHX_ "Excessively long <> operator"); |
1b420867 | 9916 | if (s >= end) |
cea2e8a9 | 9917 | Perl_croak(aTHX_ "Unterminated <> operator"); |
02aa26ce | 9918 | |
fc36a67e | 9919 | s++; |
02aa26ce NT |
9920 | |
9921 | /* check for <$fh> | |
9922 | Remember, only scalar variables are interpreted as filehandles by | |
9923 | this code. Anything more complex (e.g., <$fh{$num}>) will be | |
9924 | treated as a glob() call. | |
9925 | This code makes use of the fact that except for the $ at the front, | |
9926 | a scalar variable and a filehandle look the same. | |
9927 | */ | |
4633a7c4 | 9928 | if (*d == '$' && d[1]) d++; |
02aa26ce NT |
9929 | |
9930 | /* allow <Pkg'VALUE> or <Pkg::VALUE> */ | |
7e2040f0 | 9931 | while (*d && (isALNUM_lazy_if(d,UTF) || *d == '\'' || *d == ':')) |
2a507800 | 9932 | d += UTF ? UTF8SKIP(d) : 1; |
02aa26ce NT |
9933 | |
9934 | /* If we've tried to read what we allow filehandles to look like, and | |
9935 | there's still text left, then it must be a glob() and not a getline. | |
9936 | Use scan_str to pull out the stuff between the <> and treat it | |
9937 | as nothing more than a string. | |
9938 | */ | |
9939 | ||
3280af22 | 9940 | if (d - PL_tokenbuf != len) { |
6154021b | 9941 | pl_yylval.ival = OP_GLOB; |
d24ca0c5 | 9942 | s = scan_str(start,!!PL_madskills,FALSE,FALSE); |
79072805 | 9943 | if (!s) |
cea2e8a9 | 9944 | Perl_croak(aTHX_ "Glob not terminated"); |
79072805 LW |
9945 | return s; |
9946 | } | |
395c3793 | 9947 | else { |
9b3023bc | 9948 | bool readline_overriden = FALSE; |
6136c704 | 9949 | GV *gv_readline; |
9b3023bc | 9950 | GV **gvp; |
02aa26ce | 9951 | /* we're in a filehandle read situation */ |
3280af22 | 9952 | d = PL_tokenbuf; |
02aa26ce NT |
9953 | |
9954 | /* turn <> into <ARGV> */ | |
79072805 | 9955 | if (!len) |
689badd5 | 9956 | Copy("ARGV",d,5,char); |
02aa26ce | 9957 | |
9b3023bc | 9958 | /* Check whether readline() is overriden */ |
fafc274c | 9959 | gv_readline = gv_fetchpvs("readline", GV_NOTQUAL, SVt_PVCV); |
6136c704 | 9960 | if ((gv_readline |
ba979b31 | 9961 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline)) |
9b3023bc | 9962 | || |
017a3ce5 | 9963 | ((gvp = (GV**)hv_fetchs(PL_globalstash, "readline", FALSE)) |
9e0d86f8 | 9964 | && (gv_readline = *gvp) && isGV_with_GP(gv_readline) |
ba979b31 | 9965 | && GvCVu(gv_readline) && GvIMPORTED_CV(gv_readline))) |
9b3023bc RGS |
9966 | readline_overriden = TRUE; |
9967 | ||
02aa26ce NT |
9968 | /* if <$fh>, create the ops to turn the variable into a |
9969 | filehandle | |
9970 | */ | |
79072805 | 9971 | if (*d == '$') { |
02aa26ce NT |
9972 | /* try to find it in the pad for this block, otherwise find |
9973 | add symbol table ops | |
9974 | */ | |
bc9b26ca | 9975 | const PADOFFSET tmp = pad_findmy_pvn(d, len, UTF ? SVf_UTF8 : 0); |
bbd11bfc | 9976 | if (tmp != NOT_IN_PAD) { |
00b1698f | 9977 | if (PAD_COMPNAME_FLAGS_isOUR(tmp)) { |
6136c704 AL |
9978 | HV * const stash = PAD_COMPNAME_OURSTASH(tmp); |
9979 | HEK * const stashname = HvNAME_HEK(stash); | |
9980 | SV * const sym = sv_2mortal(newSVhek(stashname)); | |
396482e1 | 9981 | sv_catpvs(sym, "::"); |
f558d5af JH |
9982 | sv_catpv(sym, d+1); |
9983 | d = SvPVX(sym); | |
9984 | goto intro_sym; | |
9985 | } | |
9986 | else { | |
6136c704 | 9987 | OP * const o = newOP(OP_PADSV, 0); |
f558d5af | 9988 | o->op_targ = tmp; |
9b3023bc RGS |
9989 | PL_lex_op = readline_overriden |
9990 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 9991 | op_append_elem(OP_LIST, o, |
9b3023bc RGS |
9992 | newCVREF(0, newGVOP(OP_GV,0,gv_readline)))) |
9993 | : (OP*)newUNOP(OP_READLINE, 0, o); | |
f558d5af | 9994 | } |
a0d0e21e LW |
9995 | } |
9996 | else { | |
f558d5af JH |
9997 | GV *gv; |
9998 | ++d; | |
9999 | intro_sym: | |
10000 | gv = gv_fetchpv(d, | |
10001 | (PL_in_eval | |
10002 | ? (GV_ADDMULTI | GV_ADDINEVAL) | |
25db2ea6 | 10003 | : GV_ADDMULTI) | ( UTF ? SVf_UTF8 : 0 ), |
f558d5af | 10004 | SVt_PV); |
9b3023bc RGS |
10005 | PL_lex_op = readline_overriden |
10006 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 10007 | op_append_elem(OP_LIST, |
9b3023bc RGS |
10008 | newUNOP(OP_RV2SV, 0, newGVOP(OP_GV, 0, gv)), |
10009 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
10010 | : (OP*)newUNOP(OP_READLINE, 0, | |
10011 | newUNOP(OP_RV2SV, 0, | |
10012 | newGVOP(OP_GV, 0, gv))); | |
a0d0e21e | 10013 | } |
7c6fadd6 RGS |
10014 | if (!readline_overriden) |
10015 | PL_lex_op->op_flags |= OPf_SPECIAL; | |
6154021b RGS |
10016 | /* we created the ops in PL_lex_op, so make pl_yylval.ival a null op */ |
10017 | pl_yylval.ival = OP_NULL; | |
79072805 | 10018 | } |
02aa26ce NT |
10019 | |
10020 | /* If it's none of the above, it must be a literal filehandle | |
10021 | (<Foo::BAR> or <FOO>) so build a simple readline OP */ | |
79072805 | 10022 | else { |
25db2ea6 | 10023 | GV * const gv = gv_fetchpv(d, GV_ADD | ( UTF ? SVf_UTF8 : 0 ), SVt_PVIO); |
9b3023bc RGS |
10024 | PL_lex_op = readline_overriden |
10025 | ? (OP*)newUNOP(OP_ENTERSUB, OPf_STACKED, | |
2fcb4757 | 10026 | op_append_elem(OP_LIST, |
9b3023bc RGS |
10027 | newGVOP(OP_GV, 0, gv), |
10028 | newCVREF(0, newGVOP(OP_GV, 0, gv_readline)))) | |
10029 | : (OP*)newUNOP(OP_READLINE, 0, newGVOP(OP_GV, 0, gv)); | |
6154021b | 10030 | pl_yylval.ival = OP_NULL; |
79072805 LW |
10031 | } |
10032 | } | |
02aa26ce | 10033 | |
79072805 LW |
10034 | return s; |
10035 | } | |
10036 | ||
02aa26ce NT |
10037 | |
10038 | /* scan_str | |
10039 | takes: start position in buffer | |
09bef843 SB |
10040 | keep_quoted preserve \ on the embedded delimiter(s) |
10041 | keep_delims preserve the delimiters around the string | |
d24ca0c5 DM |
10042 | re_reparse compiling a run-time /(?{})/: |
10043 | collapse // to /, and skip encoding src | |
02aa26ce NT |
10044 | returns: position to continue reading from buffer |
10045 | side-effects: multi_start, multi_close, lex_repl or lex_stuff, and | |
10046 | updates the read buffer. | |
10047 | ||
10048 | This subroutine pulls a string out of the input. It is called for: | |
10049 | q single quotes q(literal text) | |
10050 | ' single quotes 'literal text' | |
10051 | qq double quotes qq(interpolate $here please) | |
10052 | " double quotes "interpolate $here please" | |
10053 | qx backticks qx(/bin/ls -l) | |
10054 | ` backticks `/bin/ls -l` | |
10055 | qw quote words @EXPORT_OK = qw( func() $spam ) | |
10056 | m// regexp match m/this/ | |
10057 | s/// regexp substitute s/this/that/ | |
10058 | tr/// string transliterate tr/this/that/ | |
10059 | y/// string transliterate y/this/that/ | |
10060 | ($*@) sub prototypes sub foo ($) | |
09bef843 | 10061 | (stuff) sub attr parameters sub foo : attr(stuff) |
02aa26ce NT |
10062 | <> readline or globs <FOO>, <>, <$fh>, or <*.c> |
10063 | ||
10064 | In most of these cases (all but <>, patterns and transliterate) | |
10065 | yylex() calls scan_str(). m// makes yylex() call scan_pat() which | |
10066 | calls scan_str(). s/// makes yylex() call scan_subst() which calls | |
10067 | scan_str(). tr/// and y/// make yylex() call scan_trans() which | |
10068 | calls scan_str(). | |
4e553d73 | 10069 | |
02aa26ce NT |
10070 | It skips whitespace before the string starts, and treats the first |
10071 | character as the delimiter. If the delimiter is one of ([{< then | |
10072 | the corresponding "close" character )]}> is used as the closing | |
10073 | delimiter. It allows quoting of delimiters, and if the string has | |
10074 | balanced delimiters ([{<>}]) it allows nesting. | |
10075 | ||
37fd879b HS |
10076 | On success, the SV with the resulting string is put into lex_stuff or, |
10077 | if that is already non-NULL, into lex_repl. The second case occurs only | |
10078 | when parsing the RHS of the special constructs s/// and tr/// (y///). | |
10079 | For convenience, the terminating delimiter character is stuffed into | |
10080 | SvIVX of the SV. | |
02aa26ce NT |
10081 | */ |
10082 | ||
76e3520e | 10083 | STATIC char * |
d24ca0c5 | 10084 | S_scan_str(pTHX_ char *start, int keep_quoted, int keep_delims, int re_reparse) |
79072805 | 10085 | { |
97aff369 | 10086 | dVAR; |
02aa26ce | 10087 | SV *sv; /* scalar value: string */ |
d3fcec1f | 10088 | const char *tmps; /* temp string, used for delimiter matching */ |
eb578fdb KW |
10089 | char *s = start; /* current position in the buffer */ |
10090 | char term; /* terminating character */ | |
10091 | char *to; /* current position in the sv's data */ | |
02aa26ce | 10092 | I32 brackets = 1; /* bracket nesting level */ |
89491803 | 10093 | bool has_utf8 = FALSE; /* is there any utf8 content? */ |
220e2d4e | 10094 | I32 termcode; /* terminating char. code */ |
89ebb4a3 | 10095 | U8 termstr[UTF8_MAXBYTES]; /* terminating string */ |
220e2d4e | 10096 | STRLEN termlen; /* length of terminating string */ |
0331ef07 | 10097 | int last_off = 0; /* last position for nesting bracket */ |
5db06880 NC |
10098 | #ifdef PERL_MAD |
10099 | int stuffstart; | |
10100 | char *tstart; | |
10101 | #endif | |
02aa26ce | 10102 | |
7918f24d NC |
10103 | PERL_ARGS_ASSERT_SCAN_STR; |
10104 | ||
02aa26ce | 10105 | /* skip space before the delimiter */ |
29595ff2 NC |
10106 | if (isSPACE(*s)) { |
10107 | s = PEEKSPACE(s); | |
10108 | } | |
02aa26ce | 10109 | |
5db06880 | 10110 | #ifdef PERL_MAD |
cd81e915 NC |
10111 | if (PL_realtokenstart >= 0) { |
10112 | stuffstart = PL_realtokenstart; | |
10113 | PL_realtokenstart = -1; | |
5db06880 NC |
10114 | } |
10115 | else | |
10116 | stuffstart = start - SvPVX(PL_linestr); | |
10117 | #endif | |
02aa26ce | 10118 | /* mark where we are, in case we need to report errors */ |
79072805 | 10119 | CLINE; |
02aa26ce NT |
10120 | |
10121 | /* after skipping whitespace, the next character is the terminator */ | |
a0d0e21e | 10122 | term = *s; |
220e2d4e IH |
10123 | if (!UTF) { |
10124 | termcode = termstr[0] = term; | |
10125 | termlen = 1; | |
10126 | } | |
10127 | else { | |
4b88fb76 | 10128 | termcode = utf8_to_uvchr_buf((U8*)s, (U8*)PL_bufend, &termlen); |
220e2d4e IH |
10129 | Copy(s, termstr, termlen, U8); |
10130 | if (!UTF8_IS_INVARIANT(term)) | |
10131 | has_utf8 = TRUE; | |
10132 | } | |
b1c7b182 | 10133 | |
02aa26ce | 10134 | /* mark where we are */ |
57843af0 | 10135 | PL_multi_start = CopLINE(PL_curcop); |
3280af22 | 10136 | PL_multi_open = term; |
02aa26ce NT |
10137 | |
10138 | /* find corresponding closing delimiter */ | |
93a17b20 | 10139 | if (term && (tmps = strchr("([{< )]}> )]}>",term))) |
220e2d4e IH |
10140 | termcode = termstr[0] = term = tmps[5]; |
10141 | ||
3280af22 | 10142 | PL_multi_close = term; |
79072805 | 10143 | |
561b68a9 SH |
10144 | /* create a new SV to hold the contents. 79 is the SV's initial length. |
10145 | What a random number. */ | |
7d0a29fe NC |
10146 | sv = newSV_type(SVt_PVIV); |
10147 | SvGROW(sv, 80); | |
45977657 | 10148 | SvIV_set(sv, termcode); |
a0d0e21e | 10149 | (void)SvPOK_only(sv); /* validate pointer */ |
02aa26ce NT |
10150 | |
10151 | /* move past delimiter and try to read a complete string */ | |
09bef843 | 10152 | if (keep_delims) |
220e2d4e IH |
10153 | sv_catpvn(sv, s, termlen); |
10154 | s += termlen; | |
5db06880 NC |
10155 | #ifdef PERL_MAD |
10156 | tstart = SvPVX(PL_linestr) + stuffstart; | |
cd81e915 NC |
10157 | if (!PL_thisopen && !keep_delims) { |
10158 | PL_thisopen = newSVpvn(tstart, s - tstart); | |
5db06880 NC |
10159 | stuffstart = s - SvPVX(PL_linestr); |
10160 | } | |
10161 | #endif | |
93a17b20 | 10162 | for (;;) { |
d24ca0c5 | 10163 | if (PL_encoding && !UTF && !re_reparse) { |
220e2d4e IH |
10164 | bool cont = TRUE; |
10165 | ||
10166 | while (cont) { | |
95a20fc0 | 10167 | int offset = s - SvPVX_const(PL_linestr); |
66a1b24b | 10168 | const bool found = sv_cat_decode(sv, PL_encoding, PL_linestr, |
f3b9ce0f | 10169 | &offset, (char*)termstr, termlen); |
6136c704 AL |
10170 | const char * const ns = SvPVX_const(PL_linestr) + offset; |
10171 | char * const svlast = SvEND(sv) - 1; | |
220e2d4e IH |
10172 | |
10173 | for (; s < ns; s++) { | |
60d63348 | 10174 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10175 | COPLINE_INC_WITH_HERELINES; |
220e2d4e IH |
10176 | } |
10177 | if (!found) | |
10178 | goto read_more_line; | |
10179 | else { | |
10180 | /* handle quoted delimiters */ | |
52327caf | 10181 | if (SvCUR(sv) > 1 && *(svlast-1) == '\\') { |
f54cb97a | 10182 | const char *t; |
95a20fc0 | 10183 | for (t = svlast-2; t >= SvPVX_const(sv) && *t == '\\';) |
220e2d4e IH |
10184 | t--; |
10185 | if ((svlast-1 - t) % 2) { | |
10186 | if (!keep_quoted) { | |
10187 | *(svlast-1) = term; | |
10188 | *svlast = '\0'; | |
10189 | SvCUR_set(sv, SvCUR(sv) - 1); | |
10190 | } | |
10191 | continue; | |
10192 | } | |
10193 | } | |
10194 | if (PL_multi_open == PL_multi_close) { | |
10195 | cont = FALSE; | |
10196 | } | |
10197 | else { | |
f54cb97a AL |
10198 | const char *t; |
10199 | char *w; | |
0331ef07 | 10200 | for (t = w = SvPVX(sv)+last_off; t < svlast; w++, t++) { |
220e2d4e IH |
10201 | /* At here, all closes are "was quoted" one, |
10202 | so we don't check PL_multi_close. */ | |
10203 | if (*t == '\\') { | |
10204 | if (!keep_quoted && *(t+1) == PL_multi_open) | |
10205 | t++; | |
10206 | else | |
10207 | *w++ = *t++; | |
10208 | } | |
10209 | else if (*t == PL_multi_open) | |
10210 | brackets++; | |
10211 | ||
10212 | *w = *t; | |
10213 | } | |
10214 | if (w < t) { | |
10215 | *w++ = term; | |
10216 | *w = '\0'; | |
95a20fc0 | 10217 | SvCUR_set(sv, w - SvPVX_const(sv)); |
220e2d4e | 10218 | } |
0331ef07 | 10219 | last_off = w - SvPVX(sv); |
220e2d4e IH |
10220 | if (--brackets <= 0) |
10221 | cont = FALSE; | |
10222 | } | |
10223 | } | |
10224 | } | |
10225 | if (!keep_delims) { | |
10226 | SvCUR_set(sv, SvCUR(sv) - 1); | |
10227 | *SvEND(sv) = '\0'; | |
10228 | } | |
10229 | break; | |
10230 | } | |
10231 | ||
02aa26ce | 10232 | /* extend sv if need be */ |
3280af22 | 10233 | SvGROW(sv, SvCUR(sv) + (PL_bufend - s) + 1); |
02aa26ce | 10234 | /* set 'to' to the next character in the sv's string */ |
463ee0b2 | 10235 | to = SvPVX(sv)+SvCUR(sv); |
09bef843 | 10236 | |
02aa26ce | 10237 | /* if open delimiter is the close delimiter read unbridle */ |
3280af22 NIS |
10238 | if (PL_multi_open == PL_multi_close) { |
10239 | for (; s < PL_bufend; s++,to++) { | |
02aa26ce | 10240 | /* embedded newlines increment the current line number */ |
60d63348 | 10241 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10242 | COPLINE_INC_WITH_HERELINES; |
02aa26ce | 10243 | /* handle quoted delimiters */ |
3280af22 | 10244 | if (*s == '\\' && s+1 < PL_bufend && term != '\\') { |
d24ca0c5 DM |
10245 | if (!keep_quoted |
10246 | && (s[1] == term | |
10247 | || (re_reparse && s[1] == '\\')) | |
10248 | ) | |
a0d0e21e | 10249 | s++; |
d24ca0c5 | 10250 | /* any other quotes are simply copied straight through */ |
a0d0e21e LW |
10251 | else |
10252 | *to++ = *s++; | |
10253 | } | |
02aa26ce NT |
10254 | /* terminate when run out of buffer (the for() condition), or |
10255 | have found the terminator */ | |
220e2d4e IH |
10256 | else if (*s == term) { |
10257 | if (termlen == 1) | |
10258 | break; | |
f3b9ce0f | 10259 | if (s+termlen <= PL_bufend && memEQ(s, (char*)termstr, termlen)) |
220e2d4e IH |
10260 | break; |
10261 | } | |
63cd0674 | 10262 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 10263 | has_utf8 = TRUE; |
93a17b20 LW |
10264 | *to = *s; |
10265 | } | |
10266 | } | |
02aa26ce NT |
10267 | |
10268 | /* if the terminator isn't the same as the start character (e.g., | |
10269 | matched brackets), we have to allow more in the quoting, and | |
10270 | be prepared for nested brackets. | |
10271 | */ | |
93a17b20 | 10272 | else { |
02aa26ce | 10273 | /* read until we run out of string, or we find the terminator */ |
3280af22 | 10274 | for (; s < PL_bufend; s++,to++) { |
02aa26ce | 10275 | /* embedded newlines increment the line count */ |
60d63348 | 10276 | if (*s == '\n' && !PL_rsfp && !PL_parser->filtered) |
83944c01 | 10277 | COPLINE_INC_WITH_HERELINES; |
02aa26ce | 10278 | /* backslashes can escape the open or closing characters */ |
3280af22 | 10279 | if (*s == '\\' && s+1 < PL_bufend) { |
09bef843 SB |
10280 | if (!keep_quoted && |
10281 | ((s[1] == PL_multi_open) || (s[1] == PL_multi_close))) | |
a0d0e21e LW |
10282 | s++; |
10283 | else | |
10284 | *to++ = *s++; | |
10285 | } | |
02aa26ce | 10286 | /* allow nested opens and closes */ |
3280af22 | 10287 | else if (*s == PL_multi_close && --brackets <= 0) |
93a17b20 | 10288 | break; |
3280af22 | 10289 | else if (*s == PL_multi_open) |
93a17b20 | 10290 | brackets++; |
63cd0674 | 10291 | else if (!has_utf8 && !UTF8_IS_INVARIANT((U8)*s) && UTF) |
89491803 | 10292 | has_utf8 = TRUE; |
93a17b20 LW |
10293 | *to = *s; |
10294 | } | |
10295 | } | |
02aa26ce | 10296 | /* terminate the copied string and update the sv's end-of-string */ |
93a17b20 | 10297 | *to = '\0'; |
95a20fc0 | 10298 | SvCUR_set(sv, to - SvPVX_const(sv)); |
93a17b20 | 10299 | |
02aa26ce NT |
10300 | /* |
10301 | * this next chunk reads more into the buffer if we're not done yet | |
10302 | */ | |
10303 | ||
b1c7b182 GS |
10304 | if (s < PL_bufend) |
10305 | break; /* handle case where we are done yet :-) */ | |
79072805 | 10306 | |
6a27c188 | 10307 | #ifndef PERL_STRICT_CR |
95a20fc0 | 10308 | if (to - SvPVX_const(sv) >= 2) { |
c6f14548 GS |
10309 | if ((to[-2] == '\r' && to[-1] == '\n') || |
10310 | (to[-2] == '\n' && to[-1] == '\r')) | |
10311 | { | |
f63a84b2 LW |
10312 | to[-2] = '\n'; |
10313 | to--; | |
95a20fc0 | 10314 | SvCUR_set(sv, to - SvPVX_const(sv)); |
f63a84b2 LW |
10315 | } |
10316 | else if (to[-1] == '\r') | |
10317 | to[-1] = '\n'; | |
10318 | } | |
95a20fc0 | 10319 | else if (to - SvPVX_const(sv) == 1 && to[-1] == '\r') |
f63a84b2 LW |
10320 | to[-1] = '\n'; |
10321 | #endif | |
10322 | ||
220e2d4e | 10323 | read_more_line: |
02aa26ce NT |
10324 | /* if we're out of file, or a read fails, bail and reset the current |
10325 | line marker so we can report where the unterminated string began | |
10326 | */ | |
5db06880 NC |
10327 | #ifdef PERL_MAD |
10328 | if (PL_madskills) { | |
c35e046a | 10329 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
cd81e915 NC |
10330 | if (PL_thisstuff) |
10331 | sv_catpvn(PL_thisstuff, tstart, PL_bufend - tstart); | |
5db06880 | 10332 | else |
cd81e915 | 10333 | PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart); |
5db06880 NC |
10334 | } |
10335 | #endif | |
83944c01 | 10336 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
10337 | PL_bufptr = PL_bufend; |
10338 | if (!lex_next_chunk(0)) { | |
c07a80fd | 10339 | sv_free(sv); |
eb160463 | 10340 | CopLINE_set(PL_curcop, (line_t)PL_multi_start); |
bd61b366 | 10341 | return NULL; |
79072805 | 10342 | } |
f0e67a1d | 10343 | s = PL_bufptr; |
5db06880 NC |
10344 | #ifdef PERL_MAD |
10345 | stuffstart = 0; | |
10346 | #endif | |
378cc40b | 10347 | } |
4e553d73 | 10348 | |
02aa26ce NT |
10349 | /* at this point, we have successfully read the delimited string */ |
10350 | ||
d24ca0c5 | 10351 | if (!PL_encoding || UTF || re_reparse) { |
5db06880 NC |
10352 | #ifdef PERL_MAD |
10353 | if (PL_madskills) { | |
c35e046a | 10354 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
29522234 | 10355 | const int len = s - tstart; |
cd81e915 | 10356 | if (PL_thisstuff) |
c35e046a | 10357 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 10358 | else |
c35e046a | 10359 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
10360 | if (!PL_thisclose && !keep_delims) |
10361 | PL_thisclose = newSVpvn(s,termlen); | |
5db06880 NC |
10362 | } |
10363 | #endif | |
10364 | ||
220e2d4e IH |
10365 | if (keep_delims) |
10366 | sv_catpvn(sv, s, termlen); | |
10367 | s += termlen; | |
10368 | } | |
5db06880 NC |
10369 | #ifdef PERL_MAD |
10370 | else { | |
10371 | if (PL_madskills) { | |
c35e046a AL |
10372 | char * const tstart = SvPVX(PL_linestr) + stuffstart; |
10373 | const int len = s - tstart - termlen; | |
cd81e915 | 10374 | if (PL_thisstuff) |
c35e046a | 10375 | sv_catpvn(PL_thisstuff, tstart, len); |
5db06880 | 10376 | else |
c35e046a | 10377 | PL_thisstuff = newSVpvn(tstart, len); |
cd81e915 NC |
10378 | if (!PL_thisclose && !keep_delims) |
10379 | PL_thisclose = newSVpvn(s - termlen,termlen); | |
5db06880 NC |
10380 | } |
10381 | } | |
10382 | #endif | |
d24ca0c5 | 10383 | if (has_utf8 || (PL_encoding && !re_reparse)) |
b1c7b182 | 10384 | SvUTF8_on(sv); |
d0063567 | 10385 | |
57843af0 | 10386 | PL_multi_end = CopLINE(PL_curcop); |
02aa26ce NT |
10387 | |
10388 | /* if we allocated too much space, give some back */ | |
93a17b20 LW |
10389 | if (SvCUR(sv) + 5 < SvLEN(sv)) { |
10390 | SvLEN_set(sv, SvCUR(sv) + 1); | |
b7e9a5c2 | 10391 | SvPV_renew(sv, SvLEN(sv)); |
79072805 | 10392 | } |
02aa26ce NT |
10393 | |
10394 | /* decide whether this is the first or second quoted string we've read | |
10395 | for this op | |
10396 | */ | |
4e553d73 | 10397 | |
3280af22 | 10398 | if (PL_lex_stuff) |
7cc34111 | 10399 | PL_sublex_info.repl = sv; |
79072805 | 10400 | else |
3280af22 | 10401 | PL_lex_stuff = sv; |
378cc40b LW |
10402 | return s; |
10403 | } | |
10404 | ||
02aa26ce NT |
10405 | /* |
10406 | scan_num | |
10407 | takes: pointer to position in buffer | |
10408 | returns: pointer to new position in buffer | |
6154021b | 10409 | side-effects: builds ops for the constant in pl_yylval.op |
02aa26ce NT |
10410 | |
10411 | Read a number in any of the formats that Perl accepts: | |
10412 | ||
7fd134d9 JH |
10413 | \d(_?\d)*(\.(\d(_?\d)*)?)?[Ee][\+\-]?(\d(_?\d)*) 12 12.34 12. |
10414 | \.\d(_?\d)*[Ee][\+\-]?(\d(_?\d)*) .34 | |
24138b49 JH |
10415 | 0b[01](_?[01])* |
10416 | 0[0-7](_?[0-7])* | |
10417 | 0x[0-9A-Fa-f](_?[0-9A-Fa-f])* | |
02aa26ce | 10418 | |
3280af22 | 10419 | Like most scan_ routines, it uses the PL_tokenbuf buffer to hold the |
02aa26ce NT |
10420 | thing it reads. |
10421 | ||
10422 | If it reads a number without a decimal point or an exponent, it will | |
10423 | try converting the number to an integer and see if it can do so | |
10424 | without loss of precision. | |
10425 | */ | |
4e553d73 | 10426 | |
378cc40b | 10427 | char * |
bfed75c6 | 10428 | Perl_scan_num(pTHX_ const char *start, YYSTYPE* lvalp) |
378cc40b | 10429 | { |
97aff369 | 10430 | dVAR; |
eb578fdb KW |
10431 | const char *s = start; /* current position in buffer */ |
10432 | char *d; /* destination in temp buffer */ | |
10433 | char *e; /* end of temp buffer */ | |
86554af2 | 10434 | NV nv; /* number read, as a double */ |
a0714e2c | 10435 | SV *sv = NULL; /* place to put the converted number */ |
a86a20aa | 10436 | bool floatit; /* boolean: int or float? */ |
cbbf8932 | 10437 | const char *lastub = NULL; /* position of last underbar */ |
bfed75c6 | 10438 | static char const number_too_long[] = "Number too long"; |
378cc40b | 10439 | |
7918f24d NC |
10440 | PERL_ARGS_ASSERT_SCAN_NUM; |
10441 | ||
02aa26ce NT |
10442 | /* We use the first character to decide what type of number this is */ |
10443 | ||
378cc40b | 10444 | switch (*s) { |
79072805 | 10445 | default: |
5637ef5b | 10446 | Perl_croak(aTHX_ "panic: scan_num, *s=%d", *s); |
4e553d73 | 10447 | |
02aa26ce | 10448 | /* if it starts with a 0, it could be an octal number, a decimal in |
a7cb1f99 | 10449 | 0.13 disguise, or a hexadecimal number, or a binary number. */ |
378cc40b LW |
10450 | case '0': |
10451 | { | |
02aa26ce NT |
10452 | /* variables: |
10453 | u holds the "number so far" | |
4f19785b WSI |
10454 | shift the power of 2 of the base |
10455 | (hex == 4, octal == 3, binary == 1) | |
02aa26ce NT |
10456 | overflowed was the number more than we can hold? |
10457 | ||
10458 | Shift is used when we add a digit. It also serves as an "are | |
4f19785b WSI |
10459 | we in octal/hex/binary?" indicator to disallow hex characters |
10460 | when in octal mode. | |
02aa26ce | 10461 | */ |
9e24b6e2 JH |
10462 | NV n = 0.0; |
10463 | UV u = 0; | |
79072805 | 10464 | I32 shift; |
9e24b6e2 | 10465 | bool overflowed = FALSE; |
61f33854 | 10466 | bool just_zero = TRUE; /* just plain 0 or binary number? */ |
27da23d5 JH |
10467 | static const NV nvshift[5] = { 1.0, 2.0, 4.0, 8.0, 16.0 }; |
10468 | static const char* const bases[5] = | |
10469 | { "", "binary", "", "octal", "hexadecimal" }; | |
10470 | static const char* const Bases[5] = | |
10471 | { "", "Binary", "", "Octal", "Hexadecimal" }; | |
10472 | static const char* const maxima[5] = | |
10473 | { "", | |
10474 | "0b11111111111111111111111111111111", | |
10475 | "", | |
10476 | "037777777777", | |
10477 | "0xffffffff" }; | |
bfed75c6 | 10478 | const char *base, *Base, *max; |
378cc40b | 10479 | |
02aa26ce | 10480 | /* check for hex */ |
a674e8db | 10481 | if (s[1] == 'x' || s[1] == 'X') { |
378cc40b LW |
10482 | shift = 4; |
10483 | s += 2; | |
61f33854 | 10484 | just_zero = FALSE; |
a674e8db | 10485 | } else if (s[1] == 'b' || s[1] == 'B') { |
4f19785b WSI |
10486 | shift = 1; |
10487 | s += 2; | |
61f33854 | 10488 | just_zero = FALSE; |
378cc40b | 10489 | } |
02aa26ce | 10490 | /* check for a decimal in disguise */ |
b78218b7 | 10491 | else if (s[1] == '.' || s[1] == 'e' || s[1] == 'E') |
378cc40b | 10492 | goto decimal; |
02aa26ce | 10493 | /* so it must be octal */ |
928753ea | 10494 | else { |
378cc40b | 10495 | shift = 3; |
928753ea JH |
10496 | s++; |
10497 | } | |
10498 | ||
10499 | if (*s == '_') { | |
a2a5de95 | 10500 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
928753ea JH |
10501 | "Misplaced _ in number"); |
10502 | lastub = s++; | |
10503 | } | |
9e24b6e2 JH |
10504 | |
10505 | base = bases[shift]; | |
10506 | Base = Bases[shift]; | |
10507 | max = maxima[shift]; | |
02aa26ce | 10508 | |
4f19785b | 10509 | /* read the rest of the number */ |
378cc40b | 10510 | for (;;) { |
9e24b6e2 | 10511 | /* x is used in the overflow test, |
893fe2c2 | 10512 | b is the digit we're adding on. */ |
9e24b6e2 | 10513 | UV x, b; |
55497cff | 10514 | |
378cc40b | 10515 | switch (*s) { |
02aa26ce NT |
10516 | |
10517 | /* if we don't mention it, we're done */ | |
378cc40b LW |
10518 | default: |
10519 | goto out; | |
02aa26ce | 10520 | |
928753ea | 10521 | /* _ are ignored -- but warned about if consecutive */ |
de3bb511 | 10522 | case '_': |
a2a5de95 NC |
10523 | if (lastub && s == lastub + 1) |
10524 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10525 | "Misplaced _ in number"); | |
928753ea | 10526 | lastub = s++; |
de3bb511 | 10527 | break; |
02aa26ce NT |
10528 | |
10529 | /* 8 and 9 are not octal */ | |
378cc40b | 10530 | case '8': case '9': |
4f19785b | 10531 | if (shift == 3) |
cea2e8a9 | 10532 | yyerror(Perl_form(aTHX_ "Illegal octal digit '%c'", *s)); |
378cc40b | 10533 | /* FALL THROUGH */ |
02aa26ce NT |
10534 | |
10535 | /* octal digits */ | |
4f19785b | 10536 | case '2': case '3': case '4': |
378cc40b | 10537 | case '5': case '6': case '7': |
4f19785b | 10538 | if (shift == 1) |
cea2e8a9 | 10539 | yyerror(Perl_form(aTHX_ "Illegal binary digit '%c'", *s)); |
4f19785b WSI |
10540 | /* FALL THROUGH */ |
10541 | ||
10542 | case '0': case '1': | |
02aa26ce | 10543 | b = *s++ & 15; /* ASCII digit -> value of digit */ |
55497cff | 10544 | goto digit; |
02aa26ce NT |
10545 | |
10546 | /* hex digits */ | |
378cc40b LW |
10547 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': |
10548 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
02aa26ce | 10549 | /* make sure they said 0x */ |
378cc40b LW |
10550 | if (shift != 4) |
10551 | goto out; | |
55497cff | 10552 | b = (*s++ & 7) + 9; |
02aa26ce NT |
10553 | |
10554 | /* Prepare to put the digit we have onto the end | |
10555 | of the number so far. We check for overflows. | |
10556 | */ | |
10557 | ||
55497cff | 10558 | digit: |
61f33854 | 10559 | just_zero = FALSE; |
9e24b6e2 JH |
10560 | if (!overflowed) { |
10561 | x = u << shift; /* make room for the digit */ | |
10562 | ||
10563 | if ((x >> shift) != u | |
10564 | && !(PL_hints & HINT_NEW_BINARY)) { | |
9e24b6e2 JH |
10565 | overflowed = TRUE; |
10566 | n = (NV) u; | |
9b387841 NC |
10567 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), |
10568 | "Integer overflow in %s number", | |
10569 | base); | |
9e24b6e2 JH |
10570 | } else |
10571 | u = x | b; /* add the digit to the end */ | |
10572 | } | |
10573 | if (overflowed) { | |
10574 | n *= nvshift[shift]; | |
10575 | /* If an NV has not enough bits in its | |
10576 | * mantissa to represent an UV this summing of | |
10577 | * small low-order numbers is a waste of time | |
10578 | * (because the NV cannot preserve the | |
10579 | * low-order bits anyway): we could just | |
10580 | * remember when did we overflow and in the | |
10581 | * end just multiply n by the right | |
10582 | * amount. */ | |
10583 | n += (NV) b; | |
55497cff | 10584 | } |
378cc40b LW |
10585 | break; |
10586 | } | |
10587 | } | |
02aa26ce NT |
10588 | |
10589 | /* if we get here, we had success: make a scalar value from | |
10590 | the number. | |
10591 | */ | |
378cc40b | 10592 | out: |
928753ea JH |
10593 | |
10594 | /* final misplaced underbar check */ | |
10595 | if (s[-1] == '_') { | |
a2a5de95 | 10596 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
928753ea JH |
10597 | } |
10598 | ||
9e24b6e2 | 10599 | if (overflowed) { |
a2a5de95 NC |
10600 | if (n > 4294967295.0) |
10601 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10602 | "%s number > %s non-portable", | |
10603 | Base, max); | |
b081dd7e | 10604 | sv = newSVnv(n); |
9e24b6e2 JH |
10605 | } |
10606 | else { | |
15041a67 | 10607 | #if UVSIZE > 4 |
a2a5de95 NC |
10608 | if (u > 0xffffffff) |
10609 | Perl_ck_warner(aTHX_ packWARN(WARN_PORTABLE), | |
10610 | "%s number > %s non-portable", | |
10611 | Base, max); | |
2cc4c2dc | 10612 | #endif |
b081dd7e | 10613 | sv = newSVuv(u); |
9e24b6e2 | 10614 | } |
61f33854 | 10615 | if (just_zero && (PL_hints & HINT_NEW_INTEGER)) |
bfed75c6 | 10616 | sv = new_constant(start, s - start, "integer", |
eb0d8d16 | 10617 | sv, NULL, NULL, 0); |
61f33854 | 10618 | else if (PL_hints & HINT_NEW_BINARY) |
eb0d8d16 | 10619 | sv = new_constant(start, s - start, "binary", sv, NULL, NULL, 0); |
378cc40b LW |
10620 | } |
10621 | break; | |
02aa26ce NT |
10622 | |
10623 | /* | |
10624 | handle decimal numbers. | |
10625 | we're also sent here when we read a 0 as the first digit | |
10626 | */ | |
378cc40b LW |
10627 | case '1': case '2': case '3': case '4': case '5': |
10628 | case '6': case '7': case '8': case '9': case '.': | |
10629 | decimal: | |
3280af22 NIS |
10630 | d = PL_tokenbuf; |
10631 | e = PL_tokenbuf + sizeof PL_tokenbuf - 6; /* room for various punctuation */ | |
79072805 | 10632 | floatit = FALSE; |
02aa26ce NT |
10633 | |
10634 | /* read next group of digits and _ and copy into d */ | |
de3bb511 | 10635 | while (isDIGIT(*s) || *s == '_') { |
4e553d73 | 10636 | /* skip underscores, checking for misplaced ones |
02aa26ce NT |
10637 | if -w is on |
10638 | */ | |
93a17b20 | 10639 | if (*s == '_') { |
a2a5de95 NC |
10640 | if (lastub && s == lastub + 1) |
10641 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10642 | "Misplaced _ in number"); | |
928753ea | 10643 | lastub = s++; |
93a17b20 | 10644 | } |
fc36a67e | 10645 | else { |
02aa26ce | 10646 | /* check for end of fixed-length buffer */ |
fc36a67e | 10647 | if (d >= e) |
cea2e8a9 | 10648 | Perl_croak(aTHX_ number_too_long); |
02aa26ce | 10649 | /* if we're ok, copy the character */ |
378cc40b | 10650 | *d++ = *s++; |
fc36a67e | 10651 | } |
378cc40b | 10652 | } |
02aa26ce NT |
10653 | |
10654 | /* final misplaced underbar check */ | |
928753ea | 10655 | if (lastub && s == lastub + 1) { |
a2a5de95 | 10656 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Misplaced _ in number"); |
d008e5eb | 10657 | } |
02aa26ce NT |
10658 | |
10659 | /* read a decimal portion if there is one. avoid | |
10660 | 3..5 being interpreted as the number 3. followed | |
10661 | by .5 | |
10662 | */ | |
2f3197b3 | 10663 | if (*s == '.' && s[1] != '.') { |
79072805 | 10664 | floatit = TRUE; |
378cc40b | 10665 | *d++ = *s++; |
02aa26ce | 10666 | |
928753ea | 10667 | if (*s == '_') { |
a2a5de95 NC |
10668 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10669 | "Misplaced _ in number"); | |
928753ea JH |
10670 | lastub = s; |
10671 | } | |
10672 | ||
10673 | /* copy, ignoring underbars, until we run out of digits. | |
02aa26ce | 10674 | */ |
fc36a67e | 10675 | for (; isDIGIT(*s) || *s == '_'; s++) { |
02aa26ce | 10676 | /* fixed length buffer check */ |
fc36a67e | 10677 | if (d >= e) |
cea2e8a9 | 10678 | Perl_croak(aTHX_ number_too_long); |
928753ea | 10679 | if (*s == '_') { |
a2a5de95 NC |
10680 | if (lastub && s == lastub + 1) |
10681 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10682 | "Misplaced _ in number"); | |
928753ea JH |
10683 | lastub = s; |
10684 | } | |
10685 | else | |
fc36a67e | 10686 | *d++ = *s; |
378cc40b | 10687 | } |
928753ea JH |
10688 | /* fractional part ending in underbar? */ |
10689 | if (s[-1] == '_') { | |
a2a5de95 NC |
10690 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10691 | "Misplaced _ in number"); | |
928753ea | 10692 | } |
dd629d5b GS |
10693 | if (*s == '.' && isDIGIT(s[1])) { |
10694 | /* oops, it's really a v-string, but without the "v" */ | |
f4758303 | 10695 | s = start; |
dd629d5b GS |
10696 | goto vstring; |
10697 | } | |
378cc40b | 10698 | } |
02aa26ce NT |
10699 | |
10700 | /* read exponent part, if present */ | |
3792a11b | 10701 | if ((*s == 'e' || *s == 'E') && strchr("+-0123456789_", s[1])) { |
79072805 LW |
10702 | floatit = TRUE; |
10703 | s++; | |
02aa26ce NT |
10704 | |
10705 | /* regardless of whether user said 3E5 or 3e5, use lower 'e' */ | |
79072805 | 10706 | *d++ = 'e'; /* At least some Mach atof()s don't grok 'E' */ |
02aa26ce | 10707 | |
7fd134d9 JH |
10708 | /* stray preinitial _ */ |
10709 | if (*s == '_') { | |
a2a5de95 NC |
10710 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10711 | "Misplaced _ in number"); | |
7fd134d9 JH |
10712 | lastub = s++; |
10713 | } | |
10714 | ||
02aa26ce | 10715 | /* allow positive or negative exponent */ |
378cc40b LW |
10716 | if (*s == '+' || *s == '-') |
10717 | *d++ = *s++; | |
02aa26ce | 10718 | |
7fd134d9 JH |
10719 | /* stray initial _ */ |
10720 | if (*s == '_') { | |
a2a5de95 NC |
10721 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), |
10722 | "Misplaced _ in number"); | |
7fd134d9 JH |
10723 | lastub = s++; |
10724 | } | |
10725 | ||
7fd134d9 JH |
10726 | /* read digits of exponent */ |
10727 | while (isDIGIT(*s) || *s == '_') { | |
10728 | if (isDIGIT(*s)) { | |
10729 | if (d >= e) | |
10730 | Perl_croak(aTHX_ number_too_long); | |
b3b48e3e | 10731 | *d++ = *s++; |
7fd134d9 JH |
10732 | } |
10733 | else { | |
041457d9 | 10734 | if (((lastub && s == lastub + 1) || |
a2a5de95 NC |
10735 | (!isDIGIT(s[1]) && s[1] != '_'))) |
10736 | Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), | |
10737 | "Misplaced _ in number"); | |
b3b48e3e | 10738 | lastub = s++; |
7fd134d9 | 10739 | } |
7fd134d9 | 10740 | } |
378cc40b | 10741 | } |
02aa26ce | 10742 | |
02aa26ce | 10743 | |
0b7fceb9 | 10744 | /* |
58bb9ec3 NC |
10745 | We try to do an integer conversion first if no characters |
10746 | indicating "float" have been found. | |
0b7fceb9 MU |
10747 | */ |
10748 | ||
10749 | if (!floatit) { | |
58bb9ec3 | 10750 | UV uv; |
6136c704 | 10751 | const int flags = grok_number (PL_tokenbuf, d - PL_tokenbuf, &uv); |
58bb9ec3 NC |
10752 | |
10753 | if (flags == IS_NUMBER_IN_UV) { | |
10754 | if (uv <= IV_MAX) | |
b081dd7e | 10755 | sv = newSViv(uv); /* Prefer IVs over UVs. */ |
58bb9ec3 | 10756 | else |
b081dd7e | 10757 | sv = newSVuv(uv); |
58bb9ec3 NC |
10758 | } else if (flags == (IS_NUMBER_IN_UV | IS_NUMBER_NEG)) { |
10759 | if (uv <= (UV) IV_MIN) | |
b081dd7e | 10760 | sv = newSViv(-(IV)uv); |
58bb9ec3 NC |
10761 | else |
10762 | floatit = TRUE; | |
10763 | } else | |
10764 | floatit = TRUE; | |
10765 | } | |
0b7fceb9 | 10766 | if (floatit) { |
58bb9ec3 NC |
10767 | /* terminate the string */ |
10768 | *d = '\0'; | |
86554af2 | 10769 | nv = Atof(PL_tokenbuf); |
b081dd7e | 10770 | sv = newSVnv(nv); |
86554af2 | 10771 | } |
86554af2 | 10772 | |
eb0d8d16 NC |
10773 | if ( floatit |
10774 | ? (PL_hints & HINT_NEW_FLOAT) : (PL_hints & HINT_NEW_INTEGER) ) { | |
10775 | const char *const key = floatit ? "float" : "integer"; | |
10776 | const STRLEN keylen = floatit ? 5 : 7; | |
10777 | sv = S_new_constant(aTHX_ PL_tokenbuf, d - PL_tokenbuf, | |
10778 | key, keylen, sv, NULL, NULL, 0); | |
10779 | } | |
378cc40b | 10780 | break; |
0b7fceb9 | 10781 | |
e312add1 | 10782 | /* if it starts with a v, it could be a v-string */ |
a7cb1f99 | 10783 | case 'v': |
dd629d5b | 10784 | vstring: |
561b68a9 | 10785 | sv = newSV(5); /* preallocate storage space */ |
65b06e02 | 10786 | s = scan_vstring(s, PL_bufend, sv); |
a7cb1f99 | 10787 | break; |
79072805 | 10788 | } |
a687059c | 10789 | |
02aa26ce NT |
10790 | /* make the op for the constant and return */ |
10791 | ||
a86a20aa | 10792 | if (sv) |
b73d6f50 | 10793 | lvalp->opval = newSVOP(OP_CONST, 0, sv); |
a7cb1f99 | 10794 | else |
5f66b61c | 10795 | lvalp->opval = NULL; |
a687059c | 10796 | |
73d840c0 | 10797 | return (char *)s; |
378cc40b LW |
10798 | } |
10799 | ||
76e3520e | 10800 | STATIC char * |
cea2e8a9 | 10801 | S_scan_formline(pTHX_ register char *s) |
378cc40b | 10802 | { |
97aff369 | 10803 | dVAR; |
eb578fdb KW |
10804 | char *eol; |
10805 | char *t; | |
6136c704 | 10806 | SV * const stuff = newSVpvs(""); |
79072805 | 10807 | bool needargs = FALSE; |
c5ee2135 | 10808 | bool eofmt = FALSE; |
5db06880 NC |
10809 | #ifdef PERL_MAD |
10810 | char *tokenstart = s; | |
4f61fd4b JC |
10811 | SV* savewhite = NULL; |
10812 | ||
5db06880 | 10813 | if (PL_madskills) { |
cd81e915 NC |
10814 | savewhite = PL_thiswhite; |
10815 | PL_thiswhite = 0; | |
5db06880 NC |
10816 | } |
10817 | #endif | |
378cc40b | 10818 | |
7918f24d NC |
10819 | PERL_ARGS_ASSERT_SCAN_FORMLINE; |
10820 | ||
79072805 | 10821 | while (!needargs) { |
a1b95068 | 10822 | if (*s == '.') { |
c35e046a | 10823 | t = s+1; |
51882d45 | 10824 | #ifdef PERL_STRICT_CR |
c35e046a AL |
10825 | while (SPACE_OR_TAB(*t)) |
10826 | t++; | |
51882d45 | 10827 | #else |
c35e046a AL |
10828 | while (SPACE_OR_TAB(*t) || *t == '\r') |
10829 | t++; | |
51882d45 | 10830 | #endif |
c5ee2135 WL |
10831 | if (*t == '\n' || t == PL_bufend) { |
10832 | eofmt = TRUE; | |
79072805 | 10833 | break; |
c5ee2135 | 10834 | } |
79072805 | 10835 | } |
583c9d5c FC |
10836 | eol = (char *) memchr(s,'\n',PL_bufend-s); |
10837 | if (!eol++) | |
3280af22 | 10838 | eol = PL_bufend; |
79072805 | 10839 | if (*s != '#') { |
a0d0e21e LW |
10840 | for (t = s; t < eol; t++) { |
10841 | if (*t == '~' && t[1] == '~' && SvCUR(stuff)) { | |
10842 | needargs = FALSE; | |
10843 | goto enough; /* ~~ must be first line in formline */ | |
378cc40b | 10844 | } |
a0d0e21e LW |
10845 | if (*t == '@' || *t == '^') |
10846 | needargs = TRUE; | |
378cc40b | 10847 | } |
7121b347 MG |
10848 | if (eol > s) { |
10849 | sv_catpvn(stuff, s, eol-s); | |
2dc4c65b | 10850 | #ifndef PERL_STRICT_CR |
7121b347 MG |
10851 | if (eol-s > 1 && eol[-2] == '\r' && eol[-1] == '\n') { |
10852 | char *end = SvPVX(stuff) + SvCUR(stuff); | |
10853 | end[-2] = '\n'; | |
10854 | end[-1] = '\0'; | |
b162af07 | 10855 | SvCUR_set(stuff, SvCUR(stuff) - 1); |
7121b347 | 10856 | } |
2dc4c65b | 10857 | #endif |
7121b347 MG |
10858 | } |
10859 | else | |
10860 | break; | |
79072805 | 10861 | } |
95a20fc0 | 10862 | s = (char*)eol; |
583c9d5c FC |
10863 | if ((PL_rsfp || PL_parser->filtered) |
10864 | && PL_parser->form_lex_state == LEX_NORMAL) { | |
f0e67a1d | 10865 | bool got_some; |
5db06880 NC |
10866 | #ifdef PERL_MAD |
10867 | if (PL_madskills) { | |
cd81e915 NC |
10868 | if (PL_thistoken) |
10869 | sv_catpvn(PL_thistoken, tokenstart, PL_bufend - tokenstart); | |
5db06880 | 10870 | else |
cd81e915 | 10871 | PL_thistoken = newSVpvn(tokenstart, PL_bufend - tokenstart); |
5db06880 NC |
10872 | } |
10873 | #endif | |
f0e67a1d | 10874 | PL_bufptr = PL_bufend; |
83944c01 | 10875 | COPLINE_INC_WITH_HERELINES; |
f0e67a1d Z |
10876 | got_some = lex_next_chunk(0); |
10877 | CopLINE_dec(PL_curcop); | |
10878 | s = PL_bufptr; | |
5db06880 | 10879 | #ifdef PERL_MAD |
f0e67a1d | 10880 | tokenstart = PL_bufptr; |
5db06880 | 10881 | #endif |
f0e67a1d | 10882 | if (!got_some) |
378cc40b | 10883 | break; |
378cc40b | 10884 | } |
463ee0b2 | 10885 | incline(s); |
79072805 | 10886 | } |
a0d0e21e | 10887 | enough: |
5c9ae74d FC |
10888 | if (!SvCUR(stuff) || needargs) |
10889 | PL_lex_state = PL_parser->form_lex_state; | |
a0d0e21e | 10890 | if (SvCUR(stuff)) { |
705fe0e5 | 10891 | PL_expect = XSTATE; |
79072805 | 10892 | if (needargs) { |
cd81e915 | 10893 | start_force(PL_curforce); |
9ded7720 | 10894 | NEXTVAL_NEXTTOKE.ival = 0; |
705fe0e5 | 10895 | force_next(FORMLBRACK); |
79072805 | 10896 | } |
1bd51a4c | 10897 | if (!IN_BYTES) { |
95a20fc0 | 10898 | if (UTF && is_utf8_string((U8*)SvPVX_const(stuff), SvCUR(stuff))) |
1bd51a4c IH |
10899 | SvUTF8_on(stuff); |
10900 | else if (PL_encoding) | |
10901 | sv_recode_to_utf8(stuff, PL_encoding); | |
10902 | } | |
cd81e915 | 10903 | start_force(PL_curforce); |
9ded7720 | 10904 | NEXTVAL_NEXTTOKE.opval = (OP*)newSVOP(OP_CONST, 0, stuff); |
79072805 | 10905 | force_next(THING); |
378cc40b | 10906 | } |
79072805 | 10907 | else { |
8990e307 | 10908 | SvREFCNT_dec(stuff); |
c5ee2135 WL |
10909 | if (eofmt) |
10910 | PL_lex_formbrack = 0; | |
79072805 | 10911 | } |
5db06880 NC |
10912 | #ifdef PERL_MAD |
10913 | if (PL_madskills) { | |
cd81e915 NC |
10914 | if (PL_thistoken) |
10915 | sv_catpvn(PL_thistoken, tokenstart, s - tokenstart); | |
5db06880 | 10916 | else |
cd81e915 NC |
10917 | PL_thistoken = newSVpvn(tokenstart, s - tokenstart); |
10918 | PL_thiswhite = savewhite; | |
5db06880 NC |
10919 | } |
10920 | #endif | |
79072805 | 10921 | return s; |
378cc40b | 10922 | } |
a687059c | 10923 | |
ba6d6ac9 | 10924 | I32 |
864dbfa3 | 10925 | Perl_start_subparse(pTHX_ I32 is_format, U32 flags) |
8990e307 | 10926 | { |
97aff369 | 10927 | dVAR; |
a3b680e6 | 10928 | const I32 oldsavestack_ix = PL_savestack_ix; |
6136c704 | 10929 | CV* const outsidecv = PL_compcv; |
8990e307 | 10930 | |
7766f137 | 10931 | SAVEI32(PL_subline); |
3280af22 | 10932 | save_item(PL_subname); |
3280af22 | 10933 | SAVESPTR(PL_compcv); |
3280af22 | 10934 | |
ea726b52 | 10935 | PL_compcv = MUTABLE_CV(newSV_type(is_format ? SVt_PVFM : SVt_PVCV)); |
3280af22 NIS |
10936 | CvFLAGS(PL_compcv) |= flags; |
10937 | ||
57843af0 | 10938 | PL_subline = CopLINE(PL_curcop); |
dd2155a4 | 10939 | CvPADLIST(PL_compcv) = pad_new(padnew_SAVE|padnew_SAVESUB); |
ea726b52 | 10940 | CvOUTSIDE(PL_compcv) = MUTABLE_CV(SvREFCNT_inc_simple(outsidecv)); |
a3985cdc | 10941 | CvOUTSIDE_SEQ(PL_compcv) = PL_cop_seqmax; |
db4cf31d FC |
10942 | if (outsidecv && CvPADLIST(outsidecv)) |
10943 | CvPADLIST(PL_compcv)->xpadl_outid = CvPADLIST(outsidecv)->xpadl_id; | |
748a9306 | 10944 | |
8990e307 LW |
10945 | return oldsavestack_ix; |
10946 | } | |
10947 | ||
084592ab CN |
10948 | #ifdef __SC__ |
10949 | #pragma segment Perl_yylex | |
10950 | #endif | |
af41e527 | 10951 | static int |
19c62481 | 10952 | S_yywarn(pTHX_ const char *const s, U32 flags) |
8990e307 | 10953 | { |
97aff369 | 10954 | dVAR; |
7918f24d NC |
10955 | |
10956 | PERL_ARGS_ASSERT_YYWARN; | |
10957 | ||
faef0170 | 10958 | PL_in_eval |= EVAL_WARNONLY; |
19c62481 | 10959 | yyerror_pv(s, flags); |
faef0170 | 10960 | PL_in_eval &= ~EVAL_WARNONLY; |
748a9306 | 10961 | return 0; |
8990e307 LW |
10962 | } |
10963 | ||
10964 | int | |
15f169a1 | 10965 | Perl_yyerror(pTHX_ const char *const s) |
463ee0b2 | 10966 | { |
19c62481 BF |
10967 | PERL_ARGS_ASSERT_YYERROR; |
10968 | return yyerror_pvn(s, strlen(s), 0); | |
10969 | } | |
10970 | ||
10971 | int | |
10972 | Perl_yyerror_pv(pTHX_ const char *const s, U32 flags) | |
10973 | { | |
10974 | PERL_ARGS_ASSERT_YYERROR_PV; | |
10975 | return yyerror_pvn(s, strlen(s), flags); | |
10976 | } | |
10977 | ||
10978 | int | |
19c62481 BF |
10979 | Perl_yyerror_pvn(pTHX_ const char *const s, STRLEN len, U32 flags) |
10980 | { | |
97aff369 | 10981 | dVAR; |
bfed75c6 | 10982 | const char *context = NULL; |
68dc0745 | 10983 | int contlen = -1; |
46fc3d4c | 10984 | SV *msg; |
19c62481 | 10985 | SV * const where_sv = newSVpvs_flags("", SVs_TEMP); |
5912531f | 10986 | int yychar = PL_parser->yychar; |
19c62481 | 10987 | U32 is_utf8 = flags & SVf_UTF8; |
463ee0b2 | 10988 | |
19c62481 | 10989 | PERL_ARGS_ASSERT_YYERROR_PVN; |
7918f24d | 10990 | |
3280af22 | 10991 | if (!yychar || (yychar == ';' && !PL_rsfp)) |
19c62481 | 10992 | sv_catpvs(where_sv, "at EOF"); |
8bcfe651 TM |
10993 | else if (PL_oldoldbufptr && PL_bufptr > PL_oldoldbufptr && |
10994 | PL_bufptr - PL_oldoldbufptr < 200 && PL_oldoldbufptr != PL_oldbufptr && | |
10995 | PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
10996 | /* |
10997 | Only for NetWare: | |
10998 | The code below is removed for NetWare because it abends/crashes on NetWare | |
10999 | when the script has error such as not having the closing quotes like: | |
11000 | if ($var eq "value) | |
11001 | Checking of white spaces is anyway done in NetWare code. | |
11002 | */ | |
11003 | #ifndef NETWARE | |
3280af22 NIS |
11004 | while (isSPACE(*PL_oldoldbufptr)) |
11005 | PL_oldoldbufptr++; | |
f355267c | 11006 | #endif |
3280af22 NIS |
11007 | context = PL_oldoldbufptr; |
11008 | contlen = PL_bufptr - PL_oldoldbufptr; | |
463ee0b2 | 11009 | } |
8bcfe651 TM |
11010 | else if (PL_oldbufptr && PL_bufptr > PL_oldbufptr && |
11011 | PL_bufptr - PL_oldbufptr < 200 && PL_oldbufptr != PL_bufptr) { | |
f355267c JH |
11012 | /* |
11013 | Only for NetWare: | |
11014 | The code below is removed for NetWare because it abends/crashes on NetWare | |
11015 | when the script has error such as not having the closing quotes like: | |
11016 | if ($var eq "value) | |
11017 | Checking of white spaces is anyway done in NetWare code. | |
11018 | */ | |
11019 | #ifndef NETWARE | |
3280af22 NIS |
11020 | while (isSPACE(*PL_oldbufptr)) |
11021 | PL_oldbufptr++; | |
f355267c | 11022 | #endif |
3280af22 NIS |
11023 | context = PL_oldbufptr; |
11024 | contlen = PL_bufptr - PL_oldbufptr; | |
463ee0b2 LW |
11025 | } |
11026 | else if (yychar > 255) | |
19c62481 | 11027 | sv_catpvs(where_sv, "next token ???"); |
12fbd33b | 11028 | else if (yychar == -2) { /* YYEMPTY */ |
3280af22 NIS |
11029 | if (PL_lex_state == LEX_NORMAL || |
11030 | (PL_lex_state == LEX_KNOWNEXT && PL_lex_defer == LEX_NORMAL)) | |
19c62481 | 11031 | sv_catpvs(where_sv, "at end of line"); |
3280af22 | 11032 | else if (PL_lex_inpat) |
19c62481 | 11033 | sv_catpvs(where_sv, "within pattern"); |
463ee0b2 | 11034 | else |
19c62481 | 11035 | sv_catpvs(where_sv, "within string"); |
463ee0b2 | 11036 | } |
46fc3d4c | 11037 | else { |
19c62481 | 11038 | sv_catpvs(where_sv, "next char "); |
46fc3d4c | 11039 | if (yychar < 32) |
cea2e8a9 | 11040 | Perl_sv_catpvf(aTHX_ where_sv, "^%c", toCTRL(yychar)); |
5e7aa789 | 11041 | else if (isPRINT_LC(yychar)) { |
88c9ea1e | 11042 | const char string = yychar; |
5e7aa789 NC |
11043 | sv_catpvn(where_sv, &string, 1); |
11044 | } | |
463ee0b2 | 11045 | else |
cea2e8a9 | 11046 | Perl_sv_catpvf(aTHX_ where_sv, "\\%03o", yychar & 255); |
463ee0b2 | 11047 | } |
19c62481 | 11048 | msg = sv_2mortal(newSVpvn_flags(s, len, is_utf8)); |
ed094faf | 11049 | Perl_sv_catpvf(aTHX_ msg, " at %s line %"IVdf", ", |
248c2a4d | 11050 | OutCopFILE(PL_curcop), (IV)CopLINE(PL_curcop)); |
68dc0745 | 11051 | if (context) |
19c62481 BF |
11052 | Perl_sv_catpvf(aTHX_ msg, "near \"%"SVf"\"\n", |
11053 | SVfARG(newSVpvn_flags(context, contlen, | |
11054 | SVs_TEMP | (UTF ? SVf_UTF8 : 0)))); | |
463ee0b2 | 11055 | else |
19c62481 | 11056 | Perl_sv_catpvf(aTHX_ msg, "%"SVf"\n", SVfARG(where_sv)); |
57843af0 | 11057 | if (PL_multi_start < PL_multi_end && (U32)(CopLINE(PL_curcop) - PL_multi_end) <= 1) { |
cf2093f6 | 11058 | Perl_sv_catpvf(aTHX_ msg, |
57def98f | 11059 | " (Might be a runaway multi-line %c%c string starting on line %"IVdf")\n", |
cf2093f6 | 11060 | (int)PL_multi_open,(int)PL_multi_close,(IV)PL_multi_start); |
3280af22 | 11061 | PL_multi_end = 0; |
a0d0e21e | 11062 | } |
500960a6 | 11063 | if (PL_in_eval & EVAL_WARNONLY) { |
9b387841 | 11064 | Perl_ck_warner_d(aTHX_ packWARN(WARN_SYNTAX), "%"SVf, SVfARG(msg)); |
500960a6 | 11065 | } |
463ee0b2 | 11066 | else |
5a844595 | 11067 | qerror(msg); |
c7d6bfb2 GS |
11068 | if (PL_error_count >= 10) { |
11069 | if (PL_in_eval && SvCUR(ERRSV)) | |
d2560b70 | 11070 | Perl_croak(aTHX_ "%"SVf"%s has too many errors.\n", |
be2597df | 11071 | SVfARG(ERRSV), OutCopFILE(PL_curcop)); |
c7d6bfb2 GS |
11072 | else |
11073 | Perl_croak(aTHX_ "%s has too many errors.\n", | |
248c2a4d | 11074 | OutCopFILE(PL_curcop)); |
c7d6bfb2 | 11075 | } |
3280af22 | 11076 | PL_in_my = 0; |
5c284bb0 | 11077 | PL_in_my_stash = NULL; |
463ee0b2 LW |
11078 | return 0; |
11079 | } | |
084592ab CN |
11080 | #ifdef __SC__ |
11081 | #pragma segment Main | |
11082 | #endif | |
4e35701f | 11083 | |
b250498f | 11084 | STATIC char* |
3ae08724 | 11085 | S_swallow_bom(pTHX_ U8 *s) |
01ec43d0 | 11086 | { |
97aff369 | 11087 | dVAR; |
f54cb97a | 11088 | const STRLEN slen = SvCUR(PL_linestr); |
7918f24d NC |
11089 | |
11090 | PERL_ARGS_ASSERT_SWALLOW_BOM; | |
11091 | ||
7aa207d6 | 11092 | switch (s[0]) { |
4e553d73 NIS |
11093 | case 0xFF: |
11094 | if (s[1] == 0xFE) { | |
ee6ba15d | 11095 | /* UTF-16 little-endian? (or UTF-32LE?) */ |
3ae08724 | 11096 | if (s[2] == 0 && s[3] == 0) /* UTF-32 little-endian */ |
dcbac5bb | 11097 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11098 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32LE"); |
01ec43d0 | 11099 | #ifndef PERL_NO_UTF16_FILTER |
ee6ba15d | 11100 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (BOM)\n"); |
3ae08724 | 11101 | s += 2; |
dea0fc0b | 11102 | if (PL_bufend > (char*)s) { |
81a923f4 | 11103 | s = add_utf16_textfilter(s, TRUE); |
dea0fc0b | 11104 | } |
b250498f | 11105 | #else |
dcbac5bb | 11106 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11107 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); |
b250498f | 11108 | #endif |
01ec43d0 GS |
11109 | } |
11110 | break; | |
78ae23f5 | 11111 | case 0xFE: |
7aa207d6 | 11112 | if (s[1] == 0xFF) { /* UTF-16 big-endian? */ |
01ec43d0 | 11113 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11114 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (BOM)\n"); |
dea0fc0b JH |
11115 | s += 2; |
11116 | if (PL_bufend > (char *)s) { | |
81a923f4 | 11117 | s = add_utf16_textfilter(s, FALSE); |
dea0fc0b | 11118 | } |
b250498f | 11119 | #else |
dcbac5bb | 11120 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11121 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); |
b250498f | 11122 | #endif |
01ec43d0 GS |
11123 | } |
11124 | break; | |
3ae08724 GS |
11125 | case 0xEF: |
11126 | if (slen > 2 && s[1] == 0xBB && s[2] == 0xBF) { | |
7aa207d6 | 11127 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); |
01ec43d0 GS |
11128 | s += 3; /* UTF-8 */ |
11129 | } | |
11130 | break; | |
11131 | case 0: | |
7aa207d6 JH |
11132 | if (slen > 3) { |
11133 | if (s[1] == 0) { | |
11134 | if (s[2] == 0xFE && s[3] == 0xFF) { | |
11135 | /* UTF-32 big-endian */ | |
dcbac5bb | 11136 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d | 11137 | Perl_croak(aTHX_ "Unsupported script encoding UTF-32BE"); |
7aa207d6 JH |
11138 | } |
11139 | } | |
11140 | else if (s[2] == 0 && s[3] != 0) { | |
11141 | /* Leading bytes | |
11142 | * 00 xx 00 xx | |
11143 | * are a good indicator of UTF-16BE. */ | |
ee6ba15d | 11144 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11145 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16BE script encoding (no BOM)\n"); |
ee6ba15d EB |
11146 | s = add_utf16_textfilter(s, FALSE); |
11147 | #else | |
dcbac5bb | 11148 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d EB |
11149 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16BE"); |
11150 | #endif | |
7aa207d6 | 11151 | } |
01ec43d0 | 11152 | } |
e294cc5d JH |
11153 | #ifdef EBCDIC |
11154 | case 0xDD: | |
11155 | if (slen > 3 && s[1] == 0x73 && s[2] == 0x66 && s[3] == 0x73) { | |
11156 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-8 script encoding (BOM)\n"); | |
11157 | s += 4; /* UTF-8 */ | |
11158 | } | |
11159 | break; | |
11160 | #endif | |
11161 | ||
7aa207d6 JH |
11162 | default: |
11163 | if (slen > 3 && s[1] == 0 && s[2] != 0 && s[3] == 0) { | |
11164 | /* Leading bytes | |
11165 | * xx 00 xx 00 | |
11166 | * are a good indicator of UTF-16LE. */ | |
ee6ba15d | 11167 | #ifndef PERL_NO_UTF16_FILTER |
7aa207d6 | 11168 | if (DEBUG_p_TEST || DEBUG_T_TEST) PerlIO_printf(Perl_debug_log, "UTF-16LE script encoding (no BOM)\n"); |
81a923f4 | 11169 | s = add_utf16_textfilter(s, TRUE); |
ee6ba15d | 11170 | #else |
dcbac5bb | 11171 | /* diag_listed_as: Unsupported script encoding %s */ |
ee6ba15d EB |
11172 | Perl_croak(aTHX_ "Unsupported script encoding UTF-16LE"); |
11173 | #endif | |
7aa207d6 | 11174 | } |
01ec43d0 | 11175 | } |
b8f84bb2 | 11176 | return (char*)s; |
b250498f | 11177 | } |
4755096e | 11178 | |
6e3aabd6 GS |
11179 | |
11180 | #ifndef PERL_NO_UTF16_FILTER | |
11181 | static I32 | |
a28af015 | 11182 | S_utf16_textfilter(pTHX_ int idx, SV *sv, int maxlen) |
6e3aabd6 | 11183 | { |
97aff369 | 11184 | dVAR; |
f3040f2c | 11185 | SV *const filter = FILTER_DATA(idx); |
2a773401 NC |
11186 | /* We re-use this each time round, throwing the contents away before we |
11187 | return. */ | |
2a773401 | 11188 | SV *const utf16_buffer = MUTABLE_SV(IoTOP_GV(filter)); |
f3040f2c | 11189 | SV *const utf8_buffer = filter; |
c28d6105 | 11190 | IV status = IoPAGE(filter); |
f2338a2e | 11191 | const bool reverse = cBOOL(IoLINES(filter)); |
d2d1d4de | 11192 | I32 retval; |
c8b0cbae | 11193 | |
c85ae797 NC |
11194 | PERL_ARGS_ASSERT_UTF16_TEXTFILTER; |
11195 | ||
c8b0cbae NC |
11196 | /* As we're automatically added, at the lowest level, and hence only called |
11197 | from this file, we can be sure that we're not called in block mode. Hence | |
11198 | don't bother writing code to deal with block mode. */ | |
11199 | if (maxlen) { | |
11200 | Perl_croak(aTHX_ "panic: utf16_textfilter called in block mode (for %d characters)", maxlen); | |
11201 | } | |
c28d6105 NC |
11202 | if (status < 0) { |
11203 | Perl_croak(aTHX_ "panic: utf16_textfilter called after error (status=%"IVdf")", status); | |
11204 | } | |
1de9afcd | 11205 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
c28d6105 | 11206 | "utf16_textfilter(%p,%ce): idx=%d maxlen=%d status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", |
a28af015 | 11207 | FPTR2DPTR(void *, S_utf16_textfilter), |
c28d6105 NC |
11208 | reverse ? 'l' : 'b', idx, maxlen, status, |
11209 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
11210 | ||
11211 | while (1) { | |
11212 | STRLEN chars; | |
11213 | STRLEN have; | |
dea0fc0b | 11214 | I32 newlen; |
2a773401 | 11215 | U8 *end; |
c28d6105 NC |
11216 | /* First, look in our buffer of existing UTF-8 data: */ |
11217 | char *nl = (char *)memchr(SvPVX(utf8_buffer), '\n', SvCUR(utf8_buffer)); | |
11218 | ||
11219 | if (nl) { | |
11220 | ++nl; | |
11221 | } else if (status == 0) { | |
11222 | /* EOF */ | |
11223 | IoPAGE(filter) = 0; | |
11224 | nl = SvEND(utf8_buffer); | |
11225 | } | |
11226 | if (nl) { | |
d2d1d4de NC |
11227 | STRLEN got = nl - SvPVX(utf8_buffer); |
11228 | /* Did we have anything to append? */ | |
11229 | retval = got != 0; | |
11230 | sv_catpvn(sv, SvPVX(utf8_buffer), got); | |
c28d6105 NC |
11231 | /* Everything else in this code works just fine if SVp_POK isn't |
11232 | set. This, however, needs it, and we need it to work, else | |
11233 | we loop infinitely because the buffer is never consumed. */ | |
11234 | sv_chop(utf8_buffer, nl); | |
11235 | break; | |
11236 | } | |
ba77e4cc | 11237 | |
c28d6105 NC |
11238 | /* OK, not a complete line there, so need to read some more UTF-16. |
11239 | Read an extra octect if the buffer currently has an odd number. */ | |
ba77e4cc NC |
11240 | while (1) { |
11241 | if (status <= 0) | |
11242 | break; | |
11243 | if (SvCUR(utf16_buffer) >= 2) { | |
11244 | /* Location of the high octet of the last complete code point. | |
11245 | Gosh, UTF-16 is a pain. All the benefits of variable length, | |
11246 | *coupled* with all the benefits of partial reads and | |
11247 | endianness. */ | |
11248 | const U8 *const last_hi = (U8*)SvPVX(utf16_buffer) | |
11249 | + ((SvCUR(utf16_buffer) & ~1) - (reverse ? 1 : 2)); | |
11250 | ||
11251 | if (*last_hi < 0xd8 || *last_hi > 0xdb) { | |
11252 | break; | |
11253 | } | |
11254 | ||
11255 | /* We have the first half of a surrogate. Read more. */ | |
11256 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter partial surrogate detected at %p\n", last_hi)); | |
11257 | } | |
c28d6105 | 11258 | |
c28d6105 NC |
11259 | status = FILTER_READ(idx + 1, utf16_buffer, |
11260 | 160 + (SvCUR(utf16_buffer) & 1)); | |
11261 | DEBUG_P(PerlIO_printf(Perl_debug_log, "utf16_textfilter status=%"IVdf" SvCUR(sv)=%"UVuf"\n", status, (UV)SvCUR(utf16_buffer))); | |
ba77e4cc | 11262 | DEBUG_P({ sv_dump(utf16_buffer); sv_dump(utf8_buffer);}); |
c28d6105 NC |
11263 | if (status < 0) { |
11264 | /* Error */ | |
11265 | IoPAGE(filter) = status; | |
11266 | return status; | |
11267 | } | |
11268 | } | |
11269 | ||
11270 | chars = SvCUR(utf16_buffer) >> 1; | |
11271 | have = SvCUR(utf8_buffer); | |
11272 | SvGROW(utf8_buffer, have + chars * 3 + 1); | |
2a773401 | 11273 | |
aa6dbd60 | 11274 | if (reverse) { |
c28d6105 NC |
11275 | end = utf16_to_utf8_reversed((U8*)SvPVX(utf16_buffer), |
11276 | (U8*)SvPVX_const(utf8_buffer) + have, | |
11277 | chars * 2, &newlen); | |
aa6dbd60 | 11278 | } else { |
2a773401 | 11279 | end = utf16_to_utf8((U8*)SvPVX(utf16_buffer), |
c28d6105 NC |
11280 | (U8*)SvPVX_const(utf8_buffer) + have, |
11281 | chars * 2, &newlen); | |
2a773401 | 11282 | } |
c28d6105 | 11283 | SvCUR_set(utf8_buffer, have + newlen); |
2a773401 | 11284 | *end = '\0'; |
c28d6105 | 11285 | |
e07286ed NC |
11286 | /* No need to keep this SV "well-formed" with a '\0' after the end, as |
11287 | it's private to us, and utf16_to_utf8{,reversed} take a | |
11288 | (pointer,length) pair, rather than a NUL-terminated string. */ | |
11289 | if(SvCUR(utf16_buffer) & 1) { | |
11290 | *SvPVX(utf16_buffer) = SvEND(utf16_buffer)[-1]; | |
11291 | SvCUR_set(utf16_buffer, 1); | |
11292 | } else { | |
11293 | SvCUR_set(utf16_buffer, 0); | |
11294 | } | |
2a773401 | 11295 | } |
c28d6105 NC |
11296 | DEBUG_P(PerlIO_printf(Perl_debug_log, |
11297 | "utf16_textfilter: returns, status=%"IVdf" utf16=%"UVuf" utf8=%"UVuf"\n", | |
11298 | status, | |
11299 | (UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer))); | |
11300 | DEBUG_P({ sv_dump(utf8_buffer); sv_dump(sv);}); | |
d2d1d4de | 11301 | return retval; |
6e3aabd6 | 11302 | } |
81a923f4 NC |
11303 | |
11304 | static U8 * | |
11305 | S_add_utf16_textfilter(pTHX_ U8 *const s, bool reversed) | |
11306 | { | |
2a773401 | 11307 | SV *filter = filter_add(S_utf16_textfilter, NULL); |
81a923f4 | 11308 | |
c85ae797 NC |
11309 | PERL_ARGS_ASSERT_ADD_UTF16_TEXTFILTER; |
11310 | ||
c28d6105 | 11311 | IoTOP_GV(filter) = MUTABLE_GV(newSVpvn((char *)s, PL_bufend - (char*)s)); |
f3040f2c | 11312 | sv_setpvs(filter, ""); |
2a773401 | 11313 | IoLINES(filter) = reversed; |
c28d6105 NC |
11314 | IoPAGE(filter) = 1; /* Not EOF */ |
11315 | ||
11316 | /* Sadly, we have to return a valid pointer, come what may, so we have to | |
11317 | ignore any error return from this. */ | |
11318 | SvCUR_set(PL_linestr, 0); | |
11319 | if (FILTER_READ(0, PL_linestr, 0)) { | |
11320 | SvUTF8_on(PL_linestr); | |
81a923f4 | 11321 | } else { |
c28d6105 | 11322 | SvUTF8_on(PL_linestr); |
81a923f4 | 11323 | } |
c28d6105 | 11324 | PL_bufend = SvEND(PL_linestr); |
81a923f4 NC |
11325 | return (U8*)SvPVX(PL_linestr); |
11326 | } | |
6e3aabd6 | 11327 | #endif |
9f4817db | 11328 | |
f333445c JP |
11329 | /* |
11330 | Returns a pointer to the next character after the parsed | |
11331 | vstring, as well as updating the passed in sv. | |
11332 | ||
11333 | Function must be called like | |
11334 | ||
561b68a9 | 11335 | sv = newSV(5); |
65b06e02 | 11336 | s = scan_vstring(s,e,sv); |
f333445c | 11337 | |
65b06e02 | 11338 | where s and e are the start and end of the string. |
f333445c JP |
11339 | The sv should already be large enough to store the vstring |
11340 | passed in, for performance reasons. | |
11341 | ||
11342 | */ | |
11343 | ||
11344 | char * | |
15f169a1 | 11345 | Perl_scan_vstring(pTHX_ const char *s, const char *const e, SV *sv) |
f333445c | 11346 | { |
97aff369 | 11347 | dVAR; |
bfed75c6 AL |
11348 | const char *pos = s; |
11349 | const char *start = s; | |
7918f24d NC |
11350 | |
11351 | PERL_ARGS_ASSERT_SCAN_VSTRING; | |
11352 | ||
f333445c | 11353 | if (*pos == 'v') pos++; /* get past 'v' */ |
65b06e02 | 11354 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
3e884cbf | 11355 | pos++; |
f333445c JP |
11356 | if ( *pos != '.') { |
11357 | /* this may not be a v-string if followed by => */ | |
bfed75c6 | 11358 | const char *next = pos; |
65b06e02 | 11359 | while (next < e && isSPACE(*next)) |
8fc7bb1c | 11360 | ++next; |
65b06e02 | 11361 | if ((e - next) >= 2 && *next == '=' && next[1] == '>' ) { |
f333445c JP |
11362 | /* return string not v-string */ |
11363 | sv_setpvn(sv,(char *)s,pos-s); | |
73d840c0 | 11364 | return (char *)pos; |
f333445c JP |
11365 | } |
11366 | } | |
11367 | ||
11368 | if (!isALPHA(*pos)) { | |
89ebb4a3 | 11369 | U8 tmpbuf[UTF8_MAXBYTES+1]; |
f333445c | 11370 | |
d4c19fe8 AL |
11371 | if (*s == 'v') |
11372 | s++; /* get past 'v' */ | |
f333445c | 11373 | |
76f68e9b | 11374 | sv_setpvs(sv, ""); |
f333445c JP |
11375 | |
11376 | for (;;) { | |
d4c19fe8 | 11377 | /* this is atoi() that tolerates underscores */ |
0bd48802 AL |
11378 | U8 *tmpend; |
11379 | UV rev = 0; | |
d4c19fe8 AL |
11380 | const char *end = pos; |
11381 | UV mult = 1; | |
11382 | while (--end >= s) { | |
11383 | if (*end != '_') { | |
11384 | const UV orev = rev; | |
f333445c JP |
11385 | rev += (*end - '0') * mult; |
11386 | mult *= 10; | |
9b387841 | 11387 | if (orev > rev) |
dcbac5bb | 11388 | /* diag_listed_as: Integer overflow in %s number */ |
9b387841 NC |
11389 | Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW), |
11390 | "Integer overflow in decimal number"); | |
f333445c JP |
11391 | } |
11392 | } | |
11393 | #ifdef EBCDIC | |
11394 | if (rev > 0x7FFFFFFF) | |
11395 | Perl_croak(aTHX_ "In EBCDIC the v-string components cannot exceed 2147483647"); | |
11396 | #endif | |
11397 | /* Append native character for the rev point */ | |
11398 | tmpend = uvchr_to_utf8(tmpbuf, rev); | |
11399 | sv_catpvn(sv, (const char*)tmpbuf, tmpend - tmpbuf); | |
11400 | if (!UNI_IS_INVARIANT(NATIVE_TO_UNI(rev))) | |
11401 | SvUTF8_on(sv); | |
65b06e02 | 11402 | if (pos + 1 < e && *pos == '.' && isDIGIT(pos[1])) |
f333445c JP |
11403 | s = ++pos; |
11404 | else { | |
11405 | s = pos; | |
11406 | break; | |
11407 | } | |
65b06e02 | 11408 | while (pos < e && (isDIGIT(*pos) || *pos == '_')) |
f333445c JP |
11409 | pos++; |
11410 | } | |
11411 | SvPOK_on(sv); | |
11412 | sv_magic(sv,NULL,PERL_MAGIC_vstring,(const char*)start, pos-start); | |
11413 | SvRMAGICAL_on(sv); | |
11414 | } | |
73d840c0 | 11415 | return (char *)s; |
f333445c JP |
11416 | } |
11417 | ||
88e1f1a2 JV |
11418 | int |
11419 | Perl_keyword_plugin_standard(pTHX_ | |
11420 | char *keyword_ptr, STRLEN keyword_len, OP **op_ptr) | |
11421 | { | |
11422 | PERL_ARGS_ASSERT_KEYWORD_PLUGIN_STANDARD; | |
11423 | PERL_UNUSED_CONTEXT; | |
11424 | PERL_UNUSED_ARG(keyword_ptr); | |
11425 | PERL_UNUSED_ARG(keyword_len); | |
11426 | PERL_UNUSED_ARG(op_ptr); | |
11427 | return KEYWORD_PLUGIN_DECLINE; | |
11428 | } | |
11429 | ||
78cdf107 | 11430 | #define parse_recdescent(g,p) S_parse_recdescent(aTHX_ g,p) |
e53d8f76 | 11431 | static void |
78cdf107 | 11432 | S_parse_recdescent(pTHX_ int gramtype, I32 fakeeof) |
a7aaec61 Z |
11433 | { |
11434 | SAVEI32(PL_lex_brackets); | |
11435 | if (PL_lex_brackets > 100) | |
11436 | Renew(PL_lex_brackstack, PL_lex_brackets + 10, char); | |
11437 | PL_lex_brackstack[PL_lex_brackets++] = XFAKEEOF; | |
78cdf107 Z |
11438 | SAVEI32(PL_lex_allbrackets); |
11439 | PL_lex_allbrackets = 0; | |
11440 | SAVEI8(PL_lex_fakeeof); | |
2dcac756 | 11441 | PL_lex_fakeeof = (U8)fakeeof; |
a7aaec61 Z |
11442 | if(yyparse(gramtype) && !PL_parser->error_count) |
11443 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11444 | } | |
11445 | ||
78cdf107 | 11446 | #define parse_recdescent_for_op(g,p) S_parse_recdescent_for_op(aTHX_ g,p) |
e53d8f76 | 11447 | static OP * |
78cdf107 | 11448 | S_parse_recdescent_for_op(pTHX_ int gramtype, I32 fakeeof) |
e53d8f76 Z |
11449 | { |
11450 | OP *o; | |
11451 | ENTER; | |
11452 | SAVEVPTR(PL_eval_root); | |
11453 | PL_eval_root = NULL; | |
78cdf107 | 11454 | parse_recdescent(gramtype, fakeeof); |
e53d8f76 Z |
11455 | o = PL_eval_root; |
11456 | LEAVE; | |
11457 | return o; | |
11458 | } | |
11459 | ||
78cdf107 Z |
11460 | #define parse_expr(p,f) S_parse_expr(aTHX_ p,f) |
11461 | static OP * | |
11462 | S_parse_expr(pTHX_ I32 fakeeof, U32 flags) | |
11463 | { | |
11464 | OP *exprop; | |
11465 | if (flags & ~PARSE_OPTIONAL) | |
11466 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_expr"); | |
11467 | exprop = parse_recdescent_for_op(GRAMEXPR, fakeeof); | |
11468 | if (!exprop && !(flags & PARSE_OPTIONAL)) { | |
11469 | if (!PL_parser->error_count) | |
11470 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11471 | exprop = newOP(OP_NULL, 0); | |
11472 | } | |
11473 | return exprop; | |
11474 | } | |
11475 | ||
11476 | /* | |
11477 | =for apidoc Amx|OP *|parse_arithexpr|U32 flags | |
11478 | ||
11479 | Parse a Perl arithmetic expression. This may contain operators of precedence | |
11480 | down to the bit shift operators. The expression must be followed (and thus | |
11481 | terminated) either by a comparison or lower-precedence operator or by | |
11482 | something that would normally terminate an expression such as semicolon. | |
11483 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11484 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11485 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11486 | the source of the code to be parsed and the lexical context for the | |
11487 | expression. | |
11488 | ||
11489 | The op tree representing the expression is returned. If an optional | |
11490 | expression is absent, a null pointer is returned, otherwise the pointer | |
11491 | will be non-null. | |
11492 | ||
11493 | If an error occurs in parsing or compilation, in most cases a valid op | |
11494 | tree is returned anyway. The error is reflected in the parser state, | |
11495 | normally resulting in a single exception at the top level of parsing | |
11496 | which covers all the compilation errors that occurred. Some compilation | |
11497 | errors, however, will throw an exception immediately. | |
11498 | ||
11499 | =cut | |
11500 | */ | |
11501 | ||
11502 | OP * | |
11503 | Perl_parse_arithexpr(pTHX_ U32 flags) | |
11504 | { | |
11505 | return parse_expr(LEX_FAKEEOF_COMPARE, flags); | |
11506 | } | |
11507 | ||
11508 | /* | |
11509 | =for apidoc Amx|OP *|parse_termexpr|U32 flags | |
11510 | ||
11511 | Parse a Perl term expression. This may contain operators of precedence | |
11512 | down to the assignment operators. The expression must be followed (and thus | |
11513 | terminated) either by a comma or lower-precedence operator or by | |
11514 | something that would normally terminate an expression such as semicolon. | |
11515 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11516 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11517 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11518 | the source of the code to be parsed and the lexical context for the | |
11519 | expression. | |
11520 | ||
11521 | The op tree representing the expression is returned. If an optional | |
11522 | expression is absent, a null pointer is returned, otherwise the pointer | |
11523 | will be non-null. | |
11524 | ||
11525 | If an error occurs in parsing or compilation, in most cases a valid op | |
11526 | tree is returned anyway. The error is reflected in the parser state, | |
11527 | normally resulting in a single exception at the top level of parsing | |
11528 | which covers all the compilation errors that occurred. Some compilation | |
11529 | errors, however, will throw an exception immediately. | |
11530 | ||
11531 | =cut | |
11532 | */ | |
11533 | ||
11534 | OP * | |
11535 | Perl_parse_termexpr(pTHX_ U32 flags) | |
11536 | { | |
11537 | return parse_expr(LEX_FAKEEOF_COMMA, flags); | |
11538 | } | |
11539 | ||
11540 | /* | |
11541 | =for apidoc Amx|OP *|parse_listexpr|U32 flags | |
11542 | ||
11543 | Parse a Perl list expression. This may contain operators of precedence | |
11544 | down to the comma operator. The expression must be followed (and thus | |
11545 | terminated) either by a low-precedence logic operator such as C<or> or by | |
11546 | something that would normally terminate an expression such as semicolon. | |
11547 | If I<flags> includes C<PARSE_OPTIONAL> then the expression is optional, | |
11548 | otherwise it is mandatory. It is up to the caller to ensure that the | |
11549 | dynamic parser state (L</PL_parser> et al) is correctly set to reflect | |
11550 | the source of the code to be parsed and the lexical context for the | |
11551 | expression. | |
11552 | ||
11553 | The op tree representing the expression is returned. If an optional | |
11554 | expression is absent, a null pointer is returned, otherwise the pointer | |
11555 | will be non-null. | |
11556 | ||
11557 | If an error occurs in parsing or compilation, in most cases a valid op | |
11558 | tree is returned anyway. The error is reflected in the parser state, | |
11559 | normally resulting in a single exception at the top level of parsing | |
11560 | which covers all the compilation errors that occurred. Some compilation | |
11561 | errors, however, will throw an exception immediately. | |
11562 | ||
11563 | =cut | |
11564 | */ | |
11565 | ||
11566 | OP * | |
11567 | Perl_parse_listexpr(pTHX_ U32 flags) | |
11568 | { | |
11569 | return parse_expr(LEX_FAKEEOF_LOWLOGIC, flags); | |
11570 | } | |
11571 | ||
11572 | /* | |
11573 | =for apidoc Amx|OP *|parse_fullexpr|U32 flags | |
11574 | ||
11575 | Parse a single complete Perl expression. This allows the full | |
11576 | expression grammar, including the lowest-precedence operators such | |
11577 | as C<or>. The expression must be followed (and thus terminated) by a | |
11578 | token that an expression would normally be terminated by: end-of-file, | |
11579 | closing bracketing punctuation, semicolon, or one of the keywords that | |
11580 | signals a postfix expression-statement modifier. If I<flags> includes | |
11581 | C<PARSE_OPTIONAL> then the expression is optional, otherwise it is | |
11582 | mandatory. It is up to the caller to ensure that the dynamic parser | |
11583 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11584 | the code to be parsed and the lexical context for the expression. | |
11585 | ||
11586 | The op tree representing the expression is returned. If an optional | |
11587 | expression is absent, a null pointer is returned, otherwise the pointer | |
11588 | will be non-null. | |
11589 | ||
11590 | If an error occurs in parsing or compilation, in most cases a valid op | |
11591 | tree is returned anyway. The error is reflected in the parser state, | |
11592 | normally resulting in a single exception at the top level of parsing | |
11593 | which covers all the compilation errors that occurred. Some compilation | |
11594 | errors, however, will throw an exception immediately. | |
11595 | ||
11596 | =cut | |
11597 | */ | |
11598 | ||
11599 | OP * | |
11600 | Perl_parse_fullexpr(pTHX_ U32 flags) | |
11601 | { | |
11602 | return parse_expr(LEX_FAKEEOF_NONEXPR, flags); | |
11603 | } | |
11604 | ||
e53d8f76 Z |
11605 | /* |
11606 | =for apidoc Amx|OP *|parse_block|U32 flags | |
11607 | ||
11608 | Parse a single complete Perl code block. This consists of an opening | |
11609 | brace, a sequence of statements, and a closing brace. The block | |
11610 | constitutes a lexical scope, so C<my> variables and various compile-time | |
11611 | effects can be contained within it. It is up to the caller to ensure | |
11612 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11613 | reflect the source of the code to be parsed and the lexical context for | |
11614 | the statement. | |
11615 | ||
11616 | The op tree representing the code block is returned. This is always a | |
11617 | real op, never a null pointer. It will normally be a C<lineseq> list, | |
11618 | including C<nextstate> or equivalent ops. No ops to construct any kind | |
11619 | of runtime scope are included by virtue of it being a block. | |
11620 | ||
11621 | If an error occurs in parsing or compilation, in most cases a valid op | |
11622 | tree (most likely null) is returned anyway. The error is reflected in | |
11623 | the parser state, normally resulting in a single exception at the top | |
11624 | level of parsing which covers all the compilation errors that occurred. | |
11625 | Some compilation errors, however, will throw an exception immediately. | |
11626 | ||
11627 | The I<flags> parameter is reserved for future use, and must always | |
11628 | be zero. | |
11629 | ||
11630 | =cut | |
11631 | */ | |
11632 | ||
11633 | OP * | |
11634 | Perl_parse_block(pTHX_ U32 flags) | |
11635 | { | |
11636 | if (flags) | |
11637 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_block"); | |
78cdf107 | 11638 | return parse_recdescent_for_op(GRAMBLOCK, LEX_FAKEEOF_NEVER); |
e53d8f76 Z |
11639 | } |
11640 | ||
1da4ca5f | 11641 | /* |
8359b381 Z |
11642 | =for apidoc Amx|OP *|parse_barestmt|U32 flags |
11643 | ||
11644 | Parse a single unadorned Perl statement. This may be a normal imperative | |
11645 | statement or a declaration that has compile-time effect. It does not | |
11646 | include any label or other affixture. It is up to the caller to ensure | |
11647 | that the dynamic parser state (L</PL_parser> et al) is correctly set to | |
11648 | reflect the source of the code to be parsed and the lexical context for | |
11649 | the statement. | |
11650 | ||
11651 | The op tree representing the statement is returned. This may be a | |
11652 | null pointer if the statement is null, for example if it was actually | |
11653 | a subroutine definition (which has compile-time side effects). If not | |
11654 | null, it will be ops directly implementing the statement, suitable to | |
11655 | pass to L</newSTATEOP>. It will not normally include a C<nextstate> or | |
11656 | equivalent op (except for those embedded in a scope contained entirely | |
11657 | within the statement). | |
11658 | ||
11659 | If an error occurs in parsing or compilation, in most cases a valid op | |
11660 | tree (most likely null) is returned anyway. The error is reflected in | |
11661 | the parser state, normally resulting in a single exception at the top | |
11662 | level of parsing which covers all the compilation errors that occurred. | |
11663 | Some compilation errors, however, will throw an exception immediately. | |
11664 | ||
11665 | The I<flags> parameter is reserved for future use, and must always | |
11666 | be zero. | |
11667 | ||
11668 | =cut | |
11669 | */ | |
11670 | ||
11671 | OP * | |
11672 | Perl_parse_barestmt(pTHX_ U32 flags) | |
11673 | { | |
11674 | if (flags) | |
11675 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_barestmt"); | |
78cdf107 | 11676 | return parse_recdescent_for_op(GRAMBARESTMT, LEX_FAKEEOF_NEVER); |
8359b381 Z |
11677 | } |
11678 | ||
11679 | /* | |
361d9b55 Z |
11680 | =for apidoc Amx|SV *|parse_label|U32 flags |
11681 | ||
11682 | Parse a single label, possibly optional, of the type that may prefix a | |
11683 | Perl statement. It is up to the caller to ensure that the dynamic parser | |
11684 | state (L</PL_parser> et al) is correctly set to reflect the source of | |
11685 | the code to be parsed. If I<flags> includes C<PARSE_OPTIONAL> then the | |
11686 | label is optional, otherwise it is mandatory. | |
11687 | ||
11688 | The name of the label is returned in the form of a fresh scalar. If an | |
11689 | optional label is absent, a null pointer is returned. | |
11690 | ||
11691 | If an error occurs in parsing, which can only occur if the label is | |
11692 | mandatory, a valid label is returned anyway. The error is reflected in | |
11693 | the parser state, normally resulting in a single exception at the top | |
11694 | level of parsing which covers all the compilation errors that occurred. | |
11695 | ||
11696 | =cut | |
11697 | */ | |
11698 | ||
11699 | SV * | |
11700 | Perl_parse_label(pTHX_ U32 flags) | |
11701 | { | |
11702 | if (flags & ~PARSE_OPTIONAL) | |
11703 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_label"); | |
11704 | if (PL_lex_state == LEX_KNOWNEXT) { | |
11705 | PL_parser->yychar = yylex(); | |
11706 | if (PL_parser->yychar == LABEL) { | |
361d9b55 Z |
11707 | SV *lsv; |
11708 | PL_parser->yychar = YYEMPTY; | |
11709 | lsv = newSV_type(SVt_PV); | |
fefd015f | 11710 | sv_copypv(lsv, cSVOPx(pl_yylval.opval)->op_sv); |
361d9b55 Z |
11711 | return lsv; |
11712 | } else { | |
11713 | yyunlex(); | |
11714 | goto no_label; | |
11715 | } | |
11716 | } else { | |
11717 | char *s, *t; | |
361d9b55 Z |
11718 | STRLEN wlen, bufptr_pos; |
11719 | lex_read_space(0); | |
11720 | t = s = PL_bufptr; | |
5db1eb8d | 11721 | if (!isIDFIRST_lazy_if(s, UTF)) |
361d9b55 | 11722 | goto no_label; |
5db1eb8d | 11723 | t = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &wlen); |
361d9b55 Z |
11724 | if (word_takes_any_delimeter(s, wlen)) |
11725 | goto no_label; | |
11726 | bufptr_pos = s - SvPVX(PL_linestr); | |
11727 | PL_bufptr = t; | |
11728 | lex_read_space(LEX_KEEP_PREVIOUS); | |
11729 | t = PL_bufptr; | |
11730 | s = SvPVX(PL_linestr) + bufptr_pos; | |
11731 | if (t[0] == ':' && t[1] != ':') { | |
11732 | PL_oldoldbufptr = PL_oldbufptr; | |
11733 | PL_oldbufptr = s; | |
11734 | PL_bufptr = t+1; | |
5db1eb8d | 11735 | return newSVpvn_flags(s, wlen, UTF ? SVf_UTF8 : 0); |
361d9b55 Z |
11736 | } else { |
11737 | PL_bufptr = s; | |
11738 | no_label: | |
11739 | if (flags & PARSE_OPTIONAL) { | |
11740 | return NULL; | |
11741 | } else { | |
11742 | qerror(Perl_mess(aTHX_ "Parse error")); | |
11743 | return newSVpvs("x"); | |
11744 | } | |
11745 | } | |
11746 | } | |
11747 | } | |
11748 | ||
11749 | /* | |
28ac2b49 Z |
11750 | =for apidoc Amx|OP *|parse_fullstmt|U32 flags |
11751 | ||
11752 | Parse a single complete Perl statement. This may be a normal imperative | |
8359b381 | 11753 | statement or a declaration that has compile-time effect, and may include |
8e720305 | 11754 | optional labels. It is up to the caller to ensure that the dynamic |
28ac2b49 Z |
11755 | parser state (L</PL_parser> et al) is correctly set to reflect the source |
11756 | of the code to be parsed and the lexical context for the statement. | |
11757 | ||
11758 | The op tree representing the statement is returned. This may be a | |
11759 | null pointer if the statement is null, for example if it was actually | |
11760 | a subroutine definition (which has compile-time side effects). If not | |
11761 | null, it will be the result of a L</newSTATEOP> call, normally including | |
11762 | a C<nextstate> or equivalent op. | |
11763 | ||
11764 | If an error occurs in parsing or compilation, in most cases a valid op | |
11765 | tree (most likely null) is returned anyway. The error is reflected in | |
11766 | the parser state, normally resulting in a single exception at the top | |
11767 | level of parsing which covers all the compilation errors that occurred. | |
11768 | Some compilation errors, however, will throw an exception immediately. | |
11769 | ||
11770 | The I<flags> parameter is reserved for future use, and must always | |
11771 | be zero. | |
11772 | ||
11773 | =cut | |
11774 | */ | |
11775 | ||
11776 | OP * | |
11777 | Perl_parse_fullstmt(pTHX_ U32 flags) | |
11778 | { | |
28ac2b49 Z |
11779 | if (flags) |
11780 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_fullstmt"); | |
78cdf107 | 11781 | return parse_recdescent_for_op(GRAMFULLSTMT, LEX_FAKEEOF_NEVER); |
28ac2b49 Z |
11782 | } |
11783 | ||
07ffcb73 Z |
11784 | /* |
11785 | =for apidoc Amx|OP *|parse_stmtseq|U32 flags | |
11786 | ||
11787 | Parse a sequence of zero or more Perl statements. These may be normal | |
11788 | imperative statements, including optional labels, or declarations | |
11789 | that have compile-time effect, or any mixture thereof. The statement | |
11790 | sequence ends when a closing brace or end-of-file is encountered in a | |
11791 | place where a new statement could have validly started. It is up to | |
11792 | the caller to ensure that the dynamic parser state (L</PL_parser> et al) | |
11793 | is correctly set to reflect the source of the code to be parsed and the | |
11794 | lexical context for the statements. | |
11795 | ||
11796 | The op tree representing the statement sequence is returned. This may | |
11797 | be a null pointer if the statements were all null, for example if there | |
11798 | were no statements or if there were only subroutine definitions (which | |
11799 | have compile-time side effects). If not null, it will be a C<lineseq> | |
11800 | list, normally including C<nextstate> or equivalent ops. | |
11801 | ||
11802 | If an error occurs in parsing or compilation, in most cases a valid op | |
11803 | tree is returned anyway. The error is reflected in the parser state, | |
11804 | normally resulting in a single exception at the top level of parsing | |
11805 | which covers all the compilation errors that occurred. Some compilation | |
11806 | errors, however, will throw an exception immediately. | |
11807 | ||
11808 | The I<flags> parameter is reserved for future use, and must always | |
11809 | be zero. | |
11810 | ||
11811 | =cut | |
11812 | */ | |
11813 | ||
11814 | OP * | |
11815 | Perl_parse_stmtseq(pTHX_ U32 flags) | |
11816 | { | |
11817 | OP *stmtseqop; | |
e53d8f76 | 11818 | I32 c; |
07ffcb73 | 11819 | if (flags) |
78cdf107 Z |
11820 | Perl_croak(aTHX_ "Parsing code internal error (%s)", "parse_stmtseq"); |
11821 | stmtseqop = parse_recdescent_for_op(GRAMSTMTSEQ, LEX_FAKEEOF_CLOSING); | |
e53d8f76 Z |
11822 | c = lex_peek_unichar(0); |
11823 | if (c != -1 && c != /*{*/'}') | |
07ffcb73 | 11824 | qerror(Perl_mess(aTHX_ "Parse error")); |
07ffcb73 Z |
11825 | return stmtseqop; |
11826 | } | |
11827 | ||
28ac2b49 | 11828 | /* |
1da4ca5f NC |
11829 | * Local variables: |
11830 | * c-indentation-style: bsd | |
11831 | * c-basic-offset: 4 | |
14d04a33 | 11832 | * indent-tabs-mode: nil |
1da4ca5f NC |
11833 | * End: |
11834 | * | |
14d04a33 | 11835 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 11836 | */ |